1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 Copyright 2023 NXP 5 6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License version 2 as 10 published by the Free Software Foundation; 11 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 23 SOFTWARE IS DISCLAIMED. 24 */ 25 26 /* Bluetooth HCI event handling. */ 27 28 #include <asm/unaligned.h> 29 30 #include <net/bluetooth/bluetooth.h> 31 #include <net/bluetooth/hci_core.h> 32 #include <net/bluetooth/mgmt.h> 33 34 #include "hci_request.h" 35 #include "hci_debugfs.h" 36 #include "a2mp.h" 37 #include "amp.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 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000) 46 47 /* Handle HCI Event packets */ 48 49 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 50 u8 ev, size_t len) 51 { 52 void *data; 53 54 data = skb_pull_data(skb, len); 55 if (!data) 56 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev); 57 58 return data; 59 } 60 61 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 62 u16 op, size_t len) 63 { 64 void *data; 65 66 data = skb_pull_data(skb, len); 67 if (!data) 68 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op); 69 70 return data; 71 } 72 73 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 74 u8 ev, size_t len) 75 { 76 void *data; 77 78 data = skb_pull_data(skb, len); 79 if (!data) 80 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev); 81 82 return data; 83 } 84 85 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data, 86 struct sk_buff *skb) 87 { 88 struct hci_ev_status *rp = data; 89 90 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 91 92 /* It is possible that we receive Inquiry Complete event right 93 * before we receive Inquiry Cancel Command Complete event, in 94 * which case the latter event should have status of Command 95 * Disallowed (0x0c). This should not be treated as error, since 96 * we actually achieve what Inquiry Cancel wants to achieve, 97 * which is to end the last Inquiry session. 98 */ 99 if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) { 100 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command"); 101 rp->status = 0x00; 102 } 103 104 if (rp->status) 105 return rp->status; 106 107 clear_bit(HCI_INQUIRY, &hdev->flags); 108 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 109 wake_up_bit(&hdev->flags, HCI_INQUIRY); 110 111 hci_dev_lock(hdev); 112 /* Set discovery state to stopped if we're not doing LE active 113 * scanning. 114 */ 115 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 116 hdev->le_scan_type != LE_SCAN_ACTIVE) 117 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 118 hci_dev_unlock(hdev); 119 120 hci_conn_check_pending(hdev); 121 122 return rp->status; 123 } 124 125 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data, 126 struct sk_buff *skb) 127 { 128 struct hci_ev_status *rp = data; 129 130 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 131 132 if (rp->status) 133 return rp->status; 134 135 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ); 136 137 return rp->status; 138 } 139 140 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data, 141 struct sk_buff *skb) 142 { 143 struct hci_ev_status *rp = data; 144 145 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 146 147 if (rp->status) 148 return rp->status; 149 150 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); 151 152 hci_conn_check_pending(hdev); 153 154 return rp->status; 155 } 156 157 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data, 158 struct sk_buff *skb) 159 { 160 struct hci_ev_status *rp = data; 161 162 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 163 164 return rp->status; 165 } 166 167 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data, 168 struct sk_buff *skb) 169 { 170 struct hci_rp_role_discovery *rp = data; 171 struct hci_conn *conn; 172 173 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 174 175 if (rp->status) 176 return rp->status; 177 178 hci_dev_lock(hdev); 179 180 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 181 if (conn) 182 conn->role = rp->role; 183 184 hci_dev_unlock(hdev); 185 186 return rp->status; 187 } 188 189 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data, 190 struct sk_buff *skb) 191 { 192 struct hci_rp_read_link_policy *rp = data; 193 struct hci_conn *conn; 194 195 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 196 197 if (rp->status) 198 return rp->status; 199 200 hci_dev_lock(hdev); 201 202 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 203 if (conn) 204 conn->link_policy = __le16_to_cpu(rp->policy); 205 206 hci_dev_unlock(hdev); 207 208 return rp->status; 209 } 210 211 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data, 212 struct sk_buff *skb) 213 { 214 struct hci_rp_write_link_policy *rp = data; 215 struct hci_conn *conn; 216 void *sent; 217 218 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 219 220 if (rp->status) 221 return rp->status; 222 223 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY); 224 if (!sent) 225 return rp->status; 226 227 hci_dev_lock(hdev); 228 229 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 230 if (conn) 231 conn->link_policy = get_unaligned_le16(sent + 2); 232 233 hci_dev_unlock(hdev); 234 235 return rp->status; 236 } 237 238 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data, 239 struct sk_buff *skb) 240 { 241 struct hci_rp_read_def_link_policy *rp = data; 242 243 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 244 245 if (rp->status) 246 return rp->status; 247 248 hdev->link_policy = __le16_to_cpu(rp->policy); 249 250 return rp->status; 251 } 252 253 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data, 254 struct sk_buff *skb) 255 { 256 struct hci_ev_status *rp = data; 257 void *sent; 258 259 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 260 261 if (rp->status) 262 return rp->status; 263 264 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY); 265 if (!sent) 266 return rp->status; 267 268 hdev->link_policy = get_unaligned_le16(sent); 269 270 return rp->status; 271 } 272 273 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb) 274 { 275 struct hci_ev_status *rp = data; 276 277 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 278 279 clear_bit(HCI_RESET, &hdev->flags); 280 281 if (rp->status) 282 return rp->status; 283 284 /* Reset all non-persistent flags */ 285 hci_dev_clear_volatile_flags(hdev); 286 287 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 288 289 hdev->inq_tx_power = HCI_TX_POWER_INVALID; 290 hdev->adv_tx_power = HCI_TX_POWER_INVALID; 291 292 memset(hdev->adv_data, 0, sizeof(hdev->adv_data)); 293 hdev->adv_data_len = 0; 294 295 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data)); 296 hdev->scan_rsp_data_len = 0; 297 298 hdev->le_scan_type = LE_SCAN_PASSIVE; 299 300 hdev->ssp_debug_mode = 0; 301 302 hci_bdaddr_list_clear(&hdev->le_accept_list); 303 hci_bdaddr_list_clear(&hdev->le_resolv_list); 304 305 return rp->status; 306 } 307 308 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data, 309 struct sk_buff *skb) 310 { 311 struct hci_rp_read_stored_link_key *rp = data; 312 struct hci_cp_read_stored_link_key *sent; 313 314 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 315 316 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY); 317 if (!sent) 318 return rp->status; 319 320 if (!rp->status && sent->read_all == 0x01) { 321 hdev->stored_max_keys = le16_to_cpu(rp->max_keys); 322 hdev->stored_num_keys = le16_to_cpu(rp->num_keys); 323 } 324 325 return rp->status; 326 } 327 328 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data, 329 struct sk_buff *skb) 330 { 331 struct hci_rp_delete_stored_link_key *rp = data; 332 u16 num_keys; 333 334 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 335 336 if (rp->status) 337 return rp->status; 338 339 num_keys = le16_to_cpu(rp->num_keys); 340 341 if (num_keys <= hdev->stored_num_keys) 342 hdev->stored_num_keys -= num_keys; 343 else 344 hdev->stored_num_keys = 0; 345 346 return rp->status; 347 } 348 349 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data, 350 struct sk_buff *skb) 351 { 352 struct hci_ev_status *rp = data; 353 void *sent; 354 355 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 356 357 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME); 358 if (!sent) 359 return rp->status; 360 361 hci_dev_lock(hdev); 362 363 if (hci_dev_test_flag(hdev, HCI_MGMT)) 364 mgmt_set_local_name_complete(hdev, sent, rp->status); 365 else if (!rp->status) 366 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); 367 368 hci_dev_unlock(hdev); 369 370 return rp->status; 371 } 372 373 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data, 374 struct sk_buff *skb) 375 { 376 struct hci_rp_read_local_name *rp = data; 377 378 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 379 380 if (rp->status) 381 return rp->status; 382 383 if (hci_dev_test_flag(hdev, HCI_SETUP) || 384 hci_dev_test_flag(hdev, HCI_CONFIG)) 385 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH); 386 387 return rp->status; 388 } 389 390 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data, 391 struct sk_buff *skb) 392 { 393 struct hci_ev_status *rp = data; 394 void *sent; 395 396 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 397 398 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE); 399 if (!sent) 400 return rp->status; 401 402 hci_dev_lock(hdev); 403 404 if (!rp->status) { 405 __u8 param = *((__u8 *) sent); 406 407 if (param == AUTH_ENABLED) 408 set_bit(HCI_AUTH, &hdev->flags); 409 else 410 clear_bit(HCI_AUTH, &hdev->flags); 411 } 412 413 if (hci_dev_test_flag(hdev, HCI_MGMT)) 414 mgmt_auth_enable_complete(hdev, rp->status); 415 416 hci_dev_unlock(hdev); 417 418 return rp->status; 419 } 420 421 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data, 422 struct sk_buff *skb) 423 { 424 struct hci_ev_status *rp = data; 425 __u8 param; 426 void *sent; 427 428 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 429 430 if (rp->status) 431 return rp->status; 432 433 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE); 434 if (!sent) 435 return rp->status; 436 437 param = *((__u8 *) sent); 438 439 if (param) 440 set_bit(HCI_ENCRYPT, &hdev->flags); 441 else 442 clear_bit(HCI_ENCRYPT, &hdev->flags); 443 444 return rp->status; 445 } 446 447 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data, 448 struct sk_buff *skb) 449 { 450 struct hci_ev_status *rp = data; 451 __u8 param; 452 void *sent; 453 454 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 455 456 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE); 457 if (!sent) 458 return rp->status; 459 460 param = *((__u8 *) sent); 461 462 hci_dev_lock(hdev); 463 464 if (rp->status) { 465 hdev->discov_timeout = 0; 466 goto done; 467 } 468 469 if (param & SCAN_INQUIRY) 470 set_bit(HCI_ISCAN, &hdev->flags); 471 else 472 clear_bit(HCI_ISCAN, &hdev->flags); 473 474 if (param & SCAN_PAGE) 475 set_bit(HCI_PSCAN, &hdev->flags); 476 else 477 clear_bit(HCI_PSCAN, &hdev->flags); 478 479 done: 480 hci_dev_unlock(hdev); 481 482 return rp->status; 483 } 484 485 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data, 486 struct sk_buff *skb) 487 { 488 struct hci_ev_status *rp = data; 489 struct hci_cp_set_event_filter *cp; 490 void *sent; 491 492 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 493 494 if (rp->status) 495 return rp->status; 496 497 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT); 498 if (!sent) 499 return rp->status; 500 501 cp = (struct hci_cp_set_event_filter *)sent; 502 503 if (cp->flt_type == HCI_FLT_CLEAR_ALL) 504 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 505 else 506 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 507 508 return rp->status; 509 } 510 511 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data, 512 struct sk_buff *skb) 513 { 514 struct hci_rp_read_class_of_dev *rp = data; 515 516 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 517 518 if (rp->status) 519 return rp->status; 520 521 memcpy(hdev->dev_class, rp->dev_class, 3); 522 523 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2], 524 hdev->dev_class[1], hdev->dev_class[0]); 525 526 return rp->status; 527 } 528 529 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data, 530 struct sk_buff *skb) 531 { 532 struct hci_ev_status *rp = data; 533 void *sent; 534 535 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 536 537 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV); 538 if (!sent) 539 return rp->status; 540 541 hci_dev_lock(hdev); 542 543 if (!rp->status) 544 memcpy(hdev->dev_class, sent, 3); 545 546 if (hci_dev_test_flag(hdev, HCI_MGMT)) 547 mgmt_set_class_of_dev_complete(hdev, sent, rp->status); 548 549 hci_dev_unlock(hdev); 550 551 return rp->status; 552 } 553 554 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data, 555 struct sk_buff *skb) 556 { 557 struct hci_rp_read_voice_setting *rp = data; 558 __u16 setting; 559 560 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 561 562 if (rp->status) 563 return rp->status; 564 565 setting = __le16_to_cpu(rp->voice_setting); 566 567 if (hdev->voice_setting == setting) 568 return rp->status; 569 570 hdev->voice_setting = setting; 571 572 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 573 574 if (hdev->notify) 575 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 576 577 return rp->status; 578 } 579 580 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data, 581 struct sk_buff *skb) 582 { 583 struct hci_ev_status *rp = data; 584 __u16 setting; 585 void *sent; 586 587 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 588 589 if (rp->status) 590 return rp->status; 591 592 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING); 593 if (!sent) 594 return rp->status; 595 596 setting = get_unaligned_le16(sent); 597 598 if (hdev->voice_setting == setting) 599 return rp->status; 600 601 hdev->voice_setting = setting; 602 603 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 604 605 if (hdev->notify) 606 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 607 608 return rp->status; 609 } 610 611 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data, 612 struct sk_buff *skb) 613 { 614 struct hci_rp_read_num_supported_iac *rp = data; 615 616 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 617 618 if (rp->status) 619 return rp->status; 620 621 hdev->num_iac = rp->num_iac; 622 623 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac); 624 625 return rp->status; 626 } 627 628 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data, 629 struct sk_buff *skb) 630 { 631 struct hci_ev_status *rp = data; 632 struct hci_cp_write_ssp_mode *sent; 633 634 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 635 636 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE); 637 if (!sent) 638 return rp->status; 639 640 hci_dev_lock(hdev); 641 642 if (!rp->status) { 643 if (sent->mode) 644 hdev->features[1][0] |= LMP_HOST_SSP; 645 else 646 hdev->features[1][0] &= ~LMP_HOST_SSP; 647 } 648 649 if (!rp->status) { 650 if (sent->mode) 651 hci_dev_set_flag(hdev, HCI_SSP_ENABLED); 652 else 653 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); 654 } 655 656 hci_dev_unlock(hdev); 657 658 return rp->status; 659 } 660 661 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data, 662 struct sk_buff *skb) 663 { 664 struct hci_ev_status *rp = data; 665 struct hci_cp_write_sc_support *sent; 666 667 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 668 669 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT); 670 if (!sent) 671 return rp->status; 672 673 hci_dev_lock(hdev); 674 675 if (!rp->status) { 676 if (sent->support) 677 hdev->features[1][0] |= LMP_HOST_SC; 678 else 679 hdev->features[1][0] &= ~LMP_HOST_SC; 680 } 681 682 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) { 683 if (sent->support) 684 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 685 else 686 hci_dev_clear_flag(hdev, HCI_SC_ENABLED); 687 } 688 689 hci_dev_unlock(hdev); 690 691 return rp->status; 692 } 693 694 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data, 695 struct sk_buff *skb) 696 { 697 struct hci_rp_read_local_version *rp = data; 698 699 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 700 701 if (rp->status) 702 return rp->status; 703 704 if (hci_dev_test_flag(hdev, HCI_SETUP) || 705 hci_dev_test_flag(hdev, HCI_CONFIG)) { 706 hdev->hci_ver = rp->hci_ver; 707 hdev->hci_rev = __le16_to_cpu(rp->hci_rev); 708 hdev->lmp_ver = rp->lmp_ver; 709 hdev->manufacturer = __le16_to_cpu(rp->manufacturer); 710 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver); 711 } 712 713 return rp->status; 714 } 715 716 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data, 717 struct sk_buff *skb) 718 { 719 struct hci_rp_read_enc_key_size *rp = data; 720 struct hci_conn *conn; 721 u16 handle; 722 u8 status = rp->status; 723 724 bt_dev_dbg(hdev, "status 0x%2.2x", status); 725 726 handle = le16_to_cpu(rp->handle); 727 728 hci_dev_lock(hdev); 729 730 conn = hci_conn_hash_lookup_handle(hdev, handle); 731 if (!conn) { 732 status = 0xFF; 733 goto done; 734 } 735 736 /* While unexpected, the read_enc_key_size command may fail. The most 737 * secure approach is to then assume the key size is 0 to force a 738 * disconnection. 739 */ 740 if (status) { 741 bt_dev_err(hdev, "failed to read key size for handle %u", 742 handle); 743 conn->enc_key_size = 0; 744 } else { 745 conn->enc_key_size = rp->key_size; 746 status = 0; 747 } 748 749 hci_encrypt_cfm(conn, 0); 750 751 done: 752 hci_dev_unlock(hdev); 753 754 return status; 755 } 756 757 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data, 758 struct sk_buff *skb) 759 { 760 struct hci_rp_read_local_commands *rp = data; 761 762 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 763 764 if (rp->status) 765 return rp->status; 766 767 if (hci_dev_test_flag(hdev, HCI_SETUP) || 768 hci_dev_test_flag(hdev, HCI_CONFIG)) 769 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); 770 771 return rp->status; 772 } 773 774 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data, 775 struct sk_buff *skb) 776 { 777 struct hci_rp_read_auth_payload_to *rp = data; 778 struct hci_conn *conn; 779 780 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 781 782 if (rp->status) 783 return rp->status; 784 785 hci_dev_lock(hdev); 786 787 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 788 if (conn) 789 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); 790 791 hci_dev_unlock(hdev); 792 793 return rp->status; 794 } 795 796 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data, 797 struct sk_buff *skb) 798 { 799 struct hci_rp_write_auth_payload_to *rp = data; 800 struct hci_conn *conn; 801 void *sent; 802 803 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 804 805 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); 806 if (!sent) 807 return rp->status; 808 809 hci_dev_lock(hdev); 810 811 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 812 if (!conn) { 813 rp->status = 0xff; 814 goto unlock; 815 } 816 817 if (!rp->status) 818 conn->auth_payload_timeout = get_unaligned_le16(sent + 2); 819 820 hci_encrypt_cfm(conn, 0); 821 822 unlock: 823 hci_dev_unlock(hdev); 824 825 return rp->status; 826 } 827 828 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data, 829 struct sk_buff *skb) 830 { 831 struct hci_rp_read_local_features *rp = data; 832 833 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 834 835 if (rp->status) 836 return rp->status; 837 838 memcpy(hdev->features, rp->features, 8); 839 840 /* Adjust default settings according to features 841 * supported by device. */ 842 843 if (hdev->features[0][0] & LMP_3SLOT) 844 hdev->pkt_type |= (HCI_DM3 | HCI_DH3); 845 846 if (hdev->features[0][0] & LMP_5SLOT) 847 hdev->pkt_type |= (HCI_DM5 | HCI_DH5); 848 849 if (hdev->features[0][1] & LMP_HV2) { 850 hdev->pkt_type |= (HCI_HV2); 851 hdev->esco_type |= (ESCO_HV2); 852 } 853 854 if (hdev->features[0][1] & LMP_HV3) { 855 hdev->pkt_type |= (HCI_HV3); 856 hdev->esco_type |= (ESCO_HV3); 857 } 858 859 if (lmp_esco_capable(hdev)) 860 hdev->esco_type |= (ESCO_EV3); 861 862 if (hdev->features[0][4] & LMP_EV4) 863 hdev->esco_type |= (ESCO_EV4); 864 865 if (hdev->features[0][4] & LMP_EV5) 866 hdev->esco_type |= (ESCO_EV5); 867 868 if (hdev->features[0][5] & LMP_EDR_ESCO_2M) 869 hdev->esco_type |= (ESCO_2EV3); 870 871 if (hdev->features[0][5] & LMP_EDR_ESCO_3M) 872 hdev->esco_type |= (ESCO_3EV3); 873 874 if (hdev->features[0][5] & LMP_EDR_3S_ESCO) 875 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); 876 877 return rp->status; 878 } 879 880 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data, 881 struct sk_buff *skb) 882 { 883 struct hci_rp_read_local_ext_features *rp = data; 884 885 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 886 887 if (rp->status) 888 return rp->status; 889 890 if (hdev->max_page < rp->max_page) { 891 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, 892 &hdev->quirks)) 893 bt_dev_warn(hdev, "broken local ext features page 2"); 894 else 895 hdev->max_page = rp->max_page; 896 } 897 898 if (rp->page < HCI_MAX_PAGES) 899 memcpy(hdev->features[rp->page], rp->features, 8); 900 901 return rp->status; 902 } 903 904 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data, 905 struct sk_buff *skb) 906 { 907 struct hci_rp_read_flow_control_mode *rp = data; 908 909 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 910 911 if (rp->status) 912 return rp->status; 913 914 hdev->flow_ctl_mode = rp->mode; 915 916 return rp->status; 917 } 918 919 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, 920 struct sk_buff *skb) 921 { 922 struct hci_rp_read_buffer_size *rp = data; 923 924 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 925 926 if (rp->status) 927 return rp->status; 928 929 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); 930 hdev->sco_mtu = rp->sco_mtu; 931 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); 932 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); 933 934 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { 935 hdev->sco_mtu = 64; 936 hdev->sco_pkts = 8; 937 } 938 939 hdev->acl_cnt = hdev->acl_pkts; 940 hdev->sco_cnt = hdev->sco_pkts; 941 942 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, 943 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); 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_data_block_size(struct hci_dev *hdev, void *data, 1060 struct sk_buff *skb) 1061 { 1062 struct hci_rp_read_data_block_size *rp = data; 1063 1064 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1065 1066 if (rp->status) 1067 return rp->status; 1068 1069 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len); 1070 hdev->block_len = __le16_to_cpu(rp->block_len); 1071 hdev->num_blocks = __le16_to_cpu(rp->num_blocks); 1072 1073 hdev->block_cnt = hdev->num_blocks; 1074 1075 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu, 1076 hdev->block_cnt, hdev->block_len); 1077 1078 return rp->status; 1079 } 1080 1081 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, 1082 struct sk_buff *skb) 1083 { 1084 struct hci_rp_read_clock *rp = data; 1085 struct hci_cp_read_clock *cp; 1086 struct hci_conn *conn; 1087 1088 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1089 1090 if (rp->status) 1091 return rp->status; 1092 1093 hci_dev_lock(hdev); 1094 1095 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 1096 if (!cp) 1097 goto unlock; 1098 1099 if (cp->which == 0x00) { 1100 hdev->clock = le32_to_cpu(rp->clock); 1101 goto unlock; 1102 } 1103 1104 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1105 if (conn) { 1106 conn->clock = le32_to_cpu(rp->clock); 1107 conn->clock_accuracy = le16_to_cpu(rp->accuracy); 1108 } 1109 1110 unlock: 1111 hci_dev_unlock(hdev); 1112 return rp->status; 1113 } 1114 1115 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data, 1116 struct sk_buff *skb) 1117 { 1118 struct hci_rp_read_local_amp_info *rp = data; 1119 1120 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1121 1122 if (rp->status) 1123 return rp->status; 1124 1125 hdev->amp_status = rp->amp_status; 1126 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw); 1127 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw); 1128 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency); 1129 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu); 1130 hdev->amp_type = rp->amp_type; 1131 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap); 1132 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size); 1133 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to); 1134 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to); 1135 1136 return rp->status; 1137 } 1138 1139 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, 1140 struct sk_buff *skb) 1141 { 1142 struct hci_rp_read_inq_rsp_tx_power *rp = data; 1143 1144 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1145 1146 if (rp->status) 1147 return rp->status; 1148 1149 hdev->inq_tx_power = rp->tx_power; 1150 1151 return rp->status; 1152 } 1153 1154 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, 1155 struct sk_buff *skb) 1156 { 1157 struct hci_rp_read_def_err_data_reporting *rp = data; 1158 1159 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1160 1161 if (rp->status) 1162 return rp->status; 1163 1164 hdev->err_data_reporting = rp->err_data_reporting; 1165 1166 return rp->status; 1167 } 1168 1169 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, 1170 struct sk_buff *skb) 1171 { 1172 struct hci_ev_status *rp = data; 1173 struct hci_cp_write_def_err_data_reporting *cp; 1174 1175 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1176 1177 if (rp->status) 1178 return rp->status; 1179 1180 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); 1181 if (!cp) 1182 return rp->status; 1183 1184 hdev->err_data_reporting = cp->err_data_reporting; 1185 1186 return rp->status; 1187 } 1188 1189 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, 1190 struct sk_buff *skb) 1191 { 1192 struct hci_rp_pin_code_reply *rp = data; 1193 struct hci_cp_pin_code_reply *cp; 1194 struct hci_conn *conn; 1195 1196 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1197 1198 hci_dev_lock(hdev); 1199 1200 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1201 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); 1202 1203 if (rp->status) 1204 goto unlock; 1205 1206 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); 1207 if (!cp) 1208 goto unlock; 1209 1210 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 1211 if (conn) 1212 conn->pin_length = cp->pin_len; 1213 1214 unlock: 1215 hci_dev_unlock(hdev); 1216 return rp->status; 1217 } 1218 1219 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, 1220 struct sk_buff *skb) 1221 { 1222 struct hci_rp_pin_code_neg_reply *rp = data; 1223 1224 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1225 1226 hci_dev_lock(hdev); 1227 1228 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1229 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, 1230 rp->status); 1231 1232 hci_dev_unlock(hdev); 1233 1234 return rp->status; 1235 } 1236 1237 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, 1238 struct sk_buff *skb) 1239 { 1240 struct hci_rp_le_read_buffer_size *rp = data; 1241 1242 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1243 1244 if (rp->status) 1245 return rp->status; 1246 1247 hdev->le_mtu = __le16_to_cpu(rp->le_mtu); 1248 hdev->le_pkts = rp->le_max_pkt; 1249 1250 hdev->le_cnt = hdev->le_pkts; 1251 1252 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); 1253 1254 return rp->status; 1255 } 1256 1257 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, 1258 struct sk_buff *skb) 1259 { 1260 struct hci_rp_le_read_local_features *rp = data; 1261 1262 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1263 1264 if (rp->status) 1265 return rp->status; 1266 1267 memcpy(hdev->le_features, rp->features, 8); 1268 1269 return rp->status; 1270 } 1271 1272 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, 1273 struct sk_buff *skb) 1274 { 1275 struct hci_rp_le_read_adv_tx_power *rp = data; 1276 1277 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1278 1279 if (rp->status) 1280 return rp->status; 1281 1282 hdev->adv_tx_power = rp->tx_power; 1283 1284 return rp->status; 1285 } 1286 1287 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, 1288 struct sk_buff *skb) 1289 { 1290 struct hci_rp_user_confirm_reply *rp = data; 1291 1292 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1293 1294 hci_dev_lock(hdev); 1295 1296 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1297 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, 1298 rp->status); 1299 1300 hci_dev_unlock(hdev); 1301 1302 return rp->status; 1303 } 1304 1305 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, 1306 struct sk_buff *skb) 1307 { 1308 struct hci_rp_user_confirm_reply *rp = data; 1309 1310 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1311 1312 hci_dev_lock(hdev); 1313 1314 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1315 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, 1316 ACL_LINK, 0, rp->status); 1317 1318 hci_dev_unlock(hdev); 1319 1320 return rp->status; 1321 } 1322 1323 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, 1324 struct sk_buff *skb) 1325 { 1326 struct hci_rp_user_confirm_reply *rp = data; 1327 1328 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1329 1330 hci_dev_lock(hdev); 1331 1332 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1333 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 1334 0, rp->status); 1335 1336 hci_dev_unlock(hdev); 1337 1338 return rp->status; 1339 } 1340 1341 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, 1342 struct sk_buff *skb) 1343 { 1344 struct hci_rp_user_confirm_reply *rp = data; 1345 1346 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1347 1348 hci_dev_lock(hdev); 1349 1350 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1351 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, 1352 ACL_LINK, 0, rp->status); 1353 1354 hci_dev_unlock(hdev); 1355 1356 return rp->status; 1357 } 1358 1359 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, 1360 struct sk_buff *skb) 1361 { 1362 struct hci_rp_read_local_oob_data *rp = data; 1363 1364 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1365 1366 return rp->status; 1367 } 1368 1369 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, 1370 struct sk_buff *skb) 1371 { 1372 struct hci_rp_read_local_oob_ext_data *rp = data; 1373 1374 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1375 1376 return rp->status; 1377 } 1378 1379 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, 1380 struct sk_buff *skb) 1381 { 1382 struct hci_ev_status *rp = data; 1383 bdaddr_t *sent; 1384 1385 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1386 1387 if (rp->status) 1388 return rp->status; 1389 1390 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); 1391 if (!sent) 1392 return rp->status; 1393 1394 hci_dev_lock(hdev); 1395 1396 bacpy(&hdev->random_addr, sent); 1397 1398 if (!bacmp(&hdev->rpa, sent)) { 1399 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 1400 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, 1401 secs_to_jiffies(hdev->rpa_timeout)); 1402 } 1403 1404 hci_dev_unlock(hdev); 1405 1406 return rp->status; 1407 } 1408 1409 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, 1410 struct sk_buff *skb) 1411 { 1412 struct hci_ev_status *rp = data; 1413 struct hci_cp_le_set_default_phy *cp; 1414 1415 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1416 1417 if (rp->status) 1418 return rp->status; 1419 1420 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); 1421 if (!cp) 1422 return rp->status; 1423 1424 hci_dev_lock(hdev); 1425 1426 hdev->le_tx_def_phys = cp->tx_phys; 1427 hdev->le_rx_def_phys = cp->rx_phys; 1428 1429 hci_dev_unlock(hdev); 1430 1431 return rp->status; 1432 } 1433 1434 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, 1435 struct sk_buff *skb) 1436 { 1437 struct hci_ev_status *rp = data; 1438 struct hci_cp_le_set_adv_set_rand_addr *cp; 1439 struct adv_info *adv; 1440 1441 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1442 1443 if (rp->status) 1444 return rp->status; 1445 1446 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); 1447 /* Update only in case the adv instance since handle 0x00 shall be using 1448 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and 1449 * non-extended adverting. 1450 */ 1451 if (!cp || !cp->handle) 1452 return rp->status; 1453 1454 hci_dev_lock(hdev); 1455 1456 adv = hci_find_adv_instance(hdev, cp->handle); 1457 if (adv) { 1458 bacpy(&adv->random_addr, &cp->bdaddr); 1459 if (!bacmp(&hdev->rpa, &cp->bdaddr)) { 1460 adv->rpa_expired = false; 1461 queue_delayed_work(hdev->workqueue, 1462 &adv->rpa_expired_cb, 1463 secs_to_jiffies(hdev->rpa_timeout)); 1464 } 1465 } 1466 1467 hci_dev_unlock(hdev); 1468 1469 return rp->status; 1470 } 1471 1472 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, 1473 struct sk_buff *skb) 1474 { 1475 struct hci_ev_status *rp = data; 1476 u8 *instance; 1477 int err; 1478 1479 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1480 1481 if (rp->status) 1482 return rp->status; 1483 1484 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); 1485 if (!instance) 1486 return rp->status; 1487 1488 hci_dev_lock(hdev); 1489 1490 err = hci_remove_adv_instance(hdev, *instance); 1491 if (!err) 1492 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, 1493 *instance); 1494 1495 hci_dev_unlock(hdev); 1496 1497 return rp->status; 1498 } 1499 1500 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, 1501 struct sk_buff *skb) 1502 { 1503 struct hci_ev_status *rp = data; 1504 struct adv_info *adv, *n; 1505 int err; 1506 1507 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1508 1509 if (rp->status) 1510 return rp->status; 1511 1512 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) 1513 return rp->status; 1514 1515 hci_dev_lock(hdev); 1516 1517 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 1518 u8 instance = adv->instance; 1519 1520 err = hci_remove_adv_instance(hdev, instance); 1521 if (!err) 1522 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), 1523 hdev, instance); 1524 } 1525 1526 hci_dev_unlock(hdev); 1527 1528 return rp->status; 1529 } 1530 1531 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, 1532 struct sk_buff *skb) 1533 { 1534 struct hci_rp_le_read_transmit_power *rp = data; 1535 1536 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1537 1538 if (rp->status) 1539 return rp->status; 1540 1541 hdev->min_le_tx_power = rp->min_le_tx_power; 1542 hdev->max_le_tx_power = rp->max_le_tx_power; 1543 1544 return rp->status; 1545 } 1546 1547 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, 1548 struct sk_buff *skb) 1549 { 1550 struct hci_ev_status *rp = data; 1551 struct hci_cp_le_set_privacy_mode *cp; 1552 struct hci_conn_params *params; 1553 1554 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1555 1556 if (rp->status) 1557 return rp->status; 1558 1559 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); 1560 if (!cp) 1561 return rp->status; 1562 1563 hci_dev_lock(hdev); 1564 1565 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); 1566 if (params) 1567 params->privacy_mode = cp->mode; 1568 1569 hci_dev_unlock(hdev); 1570 1571 return rp->status; 1572 } 1573 1574 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, 1575 struct sk_buff *skb) 1576 { 1577 struct hci_ev_status *rp = data; 1578 __u8 *sent; 1579 1580 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1581 1582 if (rp->status) 1583 return rp->status; 1584 1585 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); 1586 if (!sent) 1587 return rp->status; 1588 1589 hci_dev_lock(hdev); 1590 1591 /* If we're doing connection initiation as peripheral. Set a 1592 * timeout in case something goes wrong. 1593 */ 1594 if (*sent) { 1595 struct hci_conn *conn; 1596 1597 hci_dev_set_flag(hdev, HCI_LE_ADV); 1598 1599 conn = hci_lookup_le_connect(hdev); 1600 if (conn) 1601 queue_delayed_work(hdev->workqueue, 1602 &conn->le_conn_timeout, 1603 conn->conn_timeout); 1604 } else { 1605 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1606 } 1607 1608 hci_dev_unlock(hdev); 1609 1610 return rp->status; 1611 } 1612 1613 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, 1614 struct sk_buff *skb) 1615 { 1616 struct hci_cp_le_set_ext_adv_enable *cp; 1617 struct hci_cp_ext_adv_set *set; 1618 struct adv_info *adv = NULL, *n; 1619 struct hci_ev_status *rp = data; 1620 1621 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1622 1623 if (rp->status) 1624 return rp->status; 1625 1626 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); 1627 if (!cp) 1628 return rp->status; 1629 1630 set = (void *)cp->data; 1631 1632 hci_dev_lock(hdev); 1633 1634 if (cp->num_of_sets) 1635 adv = hci_find_adv_instance(hdev, set->handle); 1636 1637 if (cp->enable) { 1638 struct hci_conn *conn; 1639 1640 hci_dev_set_flag(hdev, HCI_LE_ADV); 1641 1642 if (adv) 1643 adv->enabled = true; 1644 1645 conn = hci_lookup_le_connect(hdev); 1646 if (conn) 1647 queue_delayed_work(hdev->workqueue, 1648 &conn->le_conn_timeout, 1649 conn->conn_timeout); 1650 } else { 1651 if (cp->num_of_sets) { 1652 if (adv) 1653 adv->enabled = false; 1654 1655 /* If just one instance was disabled check if there are 1656 * any other instance enabled before clearing HCI_LE_ADV 1657 */ 1658 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1659 list) { 1660 if (adv->enabled) 1661 goto unlock; 1662 } 1663 } else { 1664 /* All instances shall be considered disabled */ 1665 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1666 list) 1667 adv->enabled = false; 1668 } 1669 1670 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1671 } 1672 1673 unlock: 1674 hci_dev_unlock(hdev); 1675 return rp->status; 1676 } 1677 1678 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, 1679 struct sk_buff *skb) 1680 { 1681 struct hci_cp_le_set_scan_param *cp; 1682 struct hci_ev_status *rp = data; 1683 1684 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1685 1686 if (rp->status) 1687 return rp->status; 1688 1689 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); 1690 if (!cp) 1691 return rp->status; 1692 1693 hci_dev_lock(hdev); 1694 1695 hdev->le_scan_type = cp->type; 1696 1697 hci_dev_unlock(hdev); 1698 1699 return rp->status; 1700 } 1701 1702 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, 1703 struct sk_buff *skb) 1704 { 1705 struct hci_cp_le_set_ext_scan_params *cp; 1706 struct hci_ev_status *rp = data; 1707 struct hci_cp_le_scan_phy_params *phy_param; 1708 1709 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1710 1711 if (rp->status) 1712 return rp->status; 1713 1714 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); 1715 if (!cp) 1716 return rp->status; 1717 1718 phy_param = (void *)cp->data; 1719 1720 hci_dev_lock(hdev); 1721 1722 hdev->le_scan_type = phy_param->type; 1723 1724 hci_dev_unlock(hdev); 1725 1726 return rp->status; 1727 } 1728 1729 static bool has_pending_adv_report(struct hci_dev *hdev) 1730 { 1731 struct discovery_state *d = &hdev->discovery; 1732 1733 return bacmp(&d->last_adv_addr, BDADDR_ANY); 1734 } 1735 1736 static void clear_pending_adv_report(struct hci_dev *hdev) 1737 { 1738 struct discovery_state *d = &hdev->discovery; 1739 1740 bacpy(&d->last_adv_addr, BDADDR_ANY); 1741 d->last_adv_data_len = 0; 1742 } 1743 1744 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, 1745 u8 bdaddr_type, s8 rssi, u32 flags, 1746 u8 *data, u8 len) 1747 { 1748 struct discovery_state *d = &hdev->discovery; 1749 1750 if (len > HCI_MAX_AD_LENGTH) 1751 return; 1752 1753 bacpy(&d->last_adv_addr, bdaddr); 1754 d->last_adv_addr_type = bdaddr_type; 1755 d->last_adv_rssi = rssi; 1756 d->last_adv_flags = flags; 1757 memcpy(d->last_adv_data, data, len); 1758 d->last_adv_data_len = len; 1759 } 1760 1761 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) 1762 { 1763 hci_dev_lock(hdev); 1764 1765 switch (enable) { 1766 case LE_SCAN_ENABLE: 1767 hci_dev_set_flag(hdev, HCI_LE_SCAN); 1768 if (hdev->le_scan_type == LE_SCAN_ACTIVE) 1769 clear_pending_adv_report(hdev); 1770 if (hci_dev_test_flag(hdev, HCI_MESH)) 1771 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 1772 break; 1773 1774 case LE_SCAN_DISABLE: 1775 /* We do this here instead of when setting DISCOVERY_STOPPED 1776 * since the latter would potentially require waiting for 1777 * inquiry to stop too. 1778 */ 1779 if (has_pending_adv_report(hdev)) { 1780 struct discovery_state *d = &hdev->discovery; 1781 1782 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 1783 d->last_adv_addr_type, NULL, 1784 d->last_adv_rssi, d->last_adv_flags, 1785 d->last_adv_data, 1786 d->last_adv_data_len, NULL, 0, 0); 1787 } 1788 1789 /* Cancel this timer so that we don't try to disable scanning 1790 * when it's already disabled. 1791 */ 1792 cancel_delayed_work(&hdev->le_scan_disable); 1793 1794 hci_dev_clear_flag(hdev, HCI_LE_SCAN); 1795 1796 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we 1797 * interrupted scanning due to a connect request. Mark 1798 * therefore discovery as stopped. 1799 */ 1800 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) 1801 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 1802 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && 1803 hdev->discovery.state == DISCOVERY_FINDING) 1804 queue_work(hdev->workqueue, &hdev->reenable_adv_work); 1805 1806 break; 1807 1808 default: 1809 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", 1810 enable); 1811 break; 1812 } 1813 1814 hci_dev_unlock(hdev); 1815 } 1816 1817 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, 1818 struct sk_buff *skb) 1819 { 1820 struct hci_cp_le_set_scan_enable *cp; 1821 struct hci_ev_status *rp = data; 1822 1823 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1824 1825 if (rp->status) 1826 return rp->status; 1827 1828 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); 1829 if (!cp) 1830 return rp->status; 1831 1832 le_set_scan_enable_complete(hdev, cp->enable); 1833 1834 return rp->status; 1835 } 1836 1837 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, 1838 struct sk_buff *skb) 1839 { 1840 struct hci_cp_le_set_ext_scan_enable *cp; 1841 struct hci_ev_status *rp = data; 1842 1843 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1844 1845 if (rp->status) 1846 return rp->status; 1847 1848 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); 1849 if (!cp) 1850 return rp->status; 1851 1852 le_set_scan_enable_complete(hdev, cp->enable); 1853 1854 return rp->status; 1855 } 1856 1857 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, 1858 struct sk_buff *skb) 1859 { 1860 struct hci_rp_le_read_num_supported_adv_sets *rp = data; 1861 1862 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, 1863 rp->num_of_sets); 1864 1865 if (rp->status) 1866 return rp->status; 1867 1868 hdev->le_num_of_adv_sets = rp->num_of_sets; 1869 1870 return rp->status; 1871 } 1872 1873 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, 1874 struct sk_buff *skb) 1875 { 1876 struct hci_rp_le_read_accept_list_size *rp = data; 1877 1878 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 1879 1880 if (rp->status) 1881 return rp->status; 1882 1883 hdev->le_accept_list_size = rp->size; 1884 1885 return rp->status; 1886 } 1887 1888 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, 1889 struct sk_buff *skb) 1890 { 1891 struct hci_ev_status *rp = data; 1892 1893 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1894 1895 if (rp->status) 1896 return rp->status; 1897 1898 hci_dev_lock(hdev); 1899 hci_bdaddr_list_clear(&hdev->le_accept_list); 1900 hci_dev_unlock(hdev); 1901 1902 return rp->status; 1903 } 1904 1905 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, 1906 struct sk_buff *skb) 1907 { 1908 struct hci_cp_le_add_to_accept_list *sent; 1909 struct hci_ev_status *rp = data; 1910 1911 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1912 1913 if (rp->status) 1914 return rp->status; 1915 1916 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); 1917 if (!sent) 1918 return rp->status; 1919 1920 hci_dev_lock(hdev); 1921 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, 1922 sent->bdaddr_type); 1923 hci_dev_unlock(hdev); 1924 1925 return rp->status; 1926 } 1927 1928 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, 1929 struct sk_buff *skb) 1930 { 1931 struct hci_cp_le_del_from_accept_list *sent; 1932 struct hci_ev_status *rp = data; 1933 1934 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1935 1936 if (rp->status) 1937 return rp->status; 1938 1939 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); 1940 if (!sent) 1941 return rp->status; 1942 1943 hci_dev_lock(hdev); 1944 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, 1945 sent->bdaddr_type); 1946 hci_dev_unlock(hdev); 1947 1948 return rp->status; 1949 } 1950 1951 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, 1952 struct sk_buff *skb) 1953 { 1954 struct hci_rp_le_read_supported_states *rp = data; 1955 1956 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1957 1958 if (rp->status) 1959 return rp->status; 1960 1961 memcpy(hdev->le_states, rp->le_states, 8); 1962 1963 return rp->status; 1964 } 1965 1966 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, 1967 struct sk_buff *skb) 1968 { 1969 struct hci_rp_le_read_def_data_len *rp = data; 1970 1971 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1972 1973 if (rp->status) 1974 return rp->status; 1975 1976 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); 1977 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); 1978 1979 return rp->status; 1980 } 1981 1982 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, 1983 struct sk_buff *skb) 1984 { 1985 struct hci_cp_le_write_def_data_len *sent; 1986 struct hci_ev_status *rp = data; 1987 1988 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1989 1990 if (rp->status) 1991 return rp->status; 1992 1993 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); 1994 if (!sent) 1995 return rp->status; 1996 1997 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); 1998 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); 1999 2000 return rp->status; 2001 } 2002 2003 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, 2004 struct sk_buff *skb) 2005 { 2006 struct hci_cp_le_add_to_resolv_list *sent; 2007 struct hci_ev_status *rp = data; 2008 2009 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2010 2011 if (rp->status) 2012 return rp->status; 2013 2014 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); 2015 if (!sent) 2016 return rp->status; 2017 2018 hci_dev_lock(hdev); 2019 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2020 sent->bdaddr_type, sent->peer_irk, 2021 sent->local_irk); 2022 hci_dev_unlock(hdev); 2023 2024 return rp->status; 2025 } 2026 2027 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, 2028 struct sk_buff *skb) 2029 { 2030 struct hci_cp_le_del_from_resolv_list *sent; 2031 struct hci_ev_status *rp = data; 2032 2033 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2034 2035 if (rp->status) 2036 return rp->status; 2037 2038 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); 2039 if (!sent) 2040 return rp->status; 2041 2042 hci_dev_lock(hdev); 2043 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2044 sent->bdaddr_type); 2045 hci_dev_unlock(hdev); 2046 2047 return rp->status; 2048 } 2049 2050 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, 2051 struct sk_buff *skb) 2052 { 2053 struct hci_ev_status *rp = data; 2054 2055 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2056 2057 if (rp->status) 2058 return rp->status; 2059 2060 hci_dev_lock(hdev); 2061 hci_bdaddr_list_clear(&hdev->le_resolv_list); 2062 hci_dev_unlock(hdev); 2063 2064 return rp->status; 2065 } 2066 2067 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, 2068 struct sk_buff *skb) 2069 { 2070 struct hci_rp_le_read_resolv_list_size *rp = data; 2071 2072 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 2073 2074 if (rp->status) 2075 return rp->status; 2076 2077 hdev->le_resolv_list_size = rp->size; 2078 2079 return rp->status; 2080 } 2081 2082 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, 2083 struct sk_buff *skb) 2084 { 2085 struct hci_ev_status *rp = data; 2086 __u8 *sent; 2087 2088 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2089 2090 if (rp->status) 2091 return rp->status; 2092 2093 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); 2094 if (!sent) 2095 return rp->status; 2096 2097 hci_dev_lock(hdev); 2098 2099 if (*sent) 2100 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); 2101 else 2102 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); 2103 2104 hci_dev_unlock(hdev); 2105 2106 return rp->status; 2107 } 2108 2109 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, 2110 struct sk_buff *skb) 2111 { 2112 struct hci_rp_le_read_max_data_len *rp = data; 2113 2114 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2115 2116 if (rp->status) 2117 return rp->status; 2118 2119 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); 2120 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); 2121 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); 2122 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); 2123 2124 return rp->status; 2125 } 2126 2127 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, 2128 struct sk_buff *skb) 2129 { 2130 struct hci_cp_write_le_host_supported *sent; 2131 struct hci_ev_status *rp = data; 2132 2133 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2134 2135 if (rp->status) 2136 return rp->status; 2137 2138 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); 2139 if (!sent) 2140 return rp->status; 2141 2142 hci_dev_lock(hdev); 2143 2144 if (sent->le) { 2145 hdev->features[1][0] |= LMP_HOST_LE; 2146 hci_dev_set_flag(hdev, HCI_LE_ENABLED); 2147 } else { 2148 hdev->features[1][0] &= ~LMP_HOST_LE; 2149 hci_dev_clear_flag(hdev, HCI_LE_ENABLED); 2150 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 2151 } 2152 2153 if (sent->simul) 2154 hdev->features[1][0] |= LMP_HOST_LE_BREDR; 2155 else 2156 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; 2157 2158 hci_dev_unlock(hdev); 2159 2160 return rp->status; 2161 } 2162 2163 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, 2164 struct sk_buff *skb) 2165 { 2166 struct hci_cp_le_set_adv_param *cp; 2167 struct hci_ev_status *rp = data; 2168 2169 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2170 2171 if (rp->status) 2172 return rp->status; 2173 2174 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); 2175 if (!cp) 2176 return rp->status; 2177 2178 hci_dev_lock(hdev); 2179 hdev->adv_addr_type = cp->own_address_type; 2180 hci_dev_unlock(hdev); 2181 2182 return rp->status; 2183 } 2184 2185 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data, 2186 struct sk_buff *skb) 2187 { 2188 struct hci_rp_le_set_ext_adv_params *rp = data; 2189 struct hci_cp_le_set_ext_adv_params *cp; 2190 struct adv_info *adv_instance; 2191 2192 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2193 2194 if (rp->status) 2195 return rp->status; 2196 2197 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); 2198 if (!cp) 2199 return rp->status; 2200 2201 hci_dev_lock(hdev); 2202 hdev->adv_addr_type = cp->own_addr_type; 2203 if (!cp->handle) { 2204 /* Store in hdev for instance 0 */ 2205 hdev->adv_tx_power = rp->tx_power; 2206 } else { 2207 adv_instance = hci_find_adv_instance(hdev, cp->handle); 2208 if (adv_instance) 2209 adv_instance->tx_power = rp->tx_power; 2210 } 2211 /* Update adv data as tx power is known now */ 2212 hci_update_adv_data(hdev, cp->handle); 2213 2214 hci_dev_unlock(hdev); 2215 2216 return rp->status; 2217 } 2218 2219 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, 2220 struct sk_buff *skb) 2221 { 2222 struct hci_rp_read_rssi *rp = data; 2223 struct hci_conn *conn; 2224 2225 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2226 2227 if (rp->status) 2228 return rp->status; 2229 2230 hci_dev_lock(hdev); 2231 2232 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2233 if (conn) 2234 conn->rssi = rp->rssi; 2235 2236 hci_dev_unlock(hdev); 2237 2238 return rp->status; 2239 } 2240 2241 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, 2242 struct sk_buff *skb) 2243 { 2244 struct hci_cp_read_tx_power *sent; 2245 struct hci_rp_read_tx_power *rp = data; 2246 struct hci_conn *conn; 2247 2248 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2249 2250 if (rp->status) 2251 return rp->status; 2252 2253 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 2254 if (!sent) 2255 return rp->status; 2256 2257 hci_dev_lock(hdev); 2258 2259 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2260 if (!conn) 2261 goto unlock; 2262 2263 switch (sent->type) { 2264 case 0x00: 2265 conn->tx_power = rp->tx_power; 2266 break; 2267 case 0x01: 2268 conn->max_tx_power = rp->tx_power; 2269 break; 2270 } 2271 2272 unlock: 2273 hci_dev_unlock(hdev); 2274 return rp->status; 2275 } 2276 2277 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, 2278 struct sk_buff *skb) 2279 { 2280 struct hci_ev_status *rp = data; 2281 u8 *mode; 2282 2283 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2284 2285 if (rp->status) 2286 return rp->status; 2287 2288 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 2289 if (mode) 2290 hdev->ssp_debug_mode = *mode; 2291 2292 return rp->status; 2293 } 2294 2295 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 2296 { 2297 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2298 2299 if (status) { 2300 hci_conn_check_pending(hdev); 2301 return; 2302 } 2303 2304 set_bit(HCI_INQUIRY, &hdev->flags); 2305 } 2306 2307 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 2308 { 2309 struct hci_cp_create_conn *cp; 2310 struct hci_conn *conn; 2311 2312 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2313 2314 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 2315 if (!cp) 2316 return; 2317 2318 hci_dev_lock(hdev); 2319 2320 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2321 2322 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); 2323 2324 if (status) { 2325 if (conn && conn->state == BT_CONNECT) { 2326 if (status != 0x0c || conn->attempt > 2) { 2327 conn->state = BT_CLOSED; 2328 hci_connect_cfm(conn, status); 2329 hci_conn_del(conn); 2330 } else 2331 conn->state = BT_CONNECT2; 2332 } 2333 } else { 2334 if (!conn) { 2335 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr, 2336 HCI_ROLE_MASTER); 2337 if (!conn) 2338 bt_dev_err(hdev, "no memory for new connection"); 2339 } 2340 } 2341 2342 hci_dev_unlock(hdev); 2343 } 2344 2345 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 2346 { 2347 struct hci_cp_add_sco *cp; 2348 struct hci_conn *acl; 2349 struct hci_link *link; 2350 __u16 handle; 2351 2352 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2353 2354 if (!status) 2355 return; 2356 2357 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 2358 if (!cp) 2359 return; 2360 2361 handle = __le16_to_cpu(cp->handle); 2362 2363 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2364 2365 hci_dev_lock(hdev); 2366 2367 acl = hci_conn_hash_lookup_handle(hdev, handle); 2368 if (acl) { 2369 link = list_first_entry_or_null(&acl->link_list, 2370 struct hci_link, list); 2371 if (link && link->conn) { 2372 link->conn->state = BT_CLOSED; 2373 2374 hci_connect_cfm(link->conn, status); 2375 hci_conn_del(link->conn); 2376 } 2377 } 2378 2379 hci_dev_unlock(hdev); 2380 } 2381 2382 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 2383 { 2384 struct hci_cp_auth_requested *cp; 2385 struct hci_conn *conn; 2386 2387 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2388 2389 if (!status) 2390 return; 2391 2392 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 2393 if (!cp) 2394 return; 2395 2396 hci_dev_lock(hdev); 2397 2398 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2399 if (conn) { 2400 if (conn->state == BT_CONFIG) { 2401 hci_connect_cfm(conn, status); 2402 hci_conn_drop(conn); 2403 } 2404 } 2405 2406 hci_dev_unlock(hdev); 2407 } 2408 2409 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 2410 { 2411 struct hci_cp_set_conn_encrypt *cp; 2412 struct hci_conn *conn; 2413 2414 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2415 2416 if (!status) 2417 return; 2418 2419 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 2420 if (!cp) 2421 return; 2422 2423 hci_dev_lock(hdev); 2424 2425 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2426 if (conn) { 2427 if (conn->state == BT_CONFIG) { 2428 hci_connect_cfm(conn, status); 2429 hci_conn_drop(conn); 2430 } 2431 } 2432 2433 hci_dev_unlock(hdev); 2434 } 2435 2436 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 2437 struct hci_conn *conn) 2438 { 2439 if (conn->state != BT_CONFIG || !conn->out) 2440 return 0; 2441 2442 if (conn->pending_sec_level == BT_SECURITY_SDP) 2443 return 0; 2444 2445 /* Only request authentication for SSP connections or non-SSP 2446 * devices with sec_level MEDIUM or HIGH or if MITM protection 2447 * is requested. 2448 */ 2449 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 2450 conn->pending_sec_level != BT_SECURITY_FIPS && 2451 conn->pending_sec_level != BT_SECURITY_HIGH && 2452 conn->pending_sec_level != BT_SECURITY_MEDIUM) 2453 return 0; 2454 2455 return 1; 2456 } 2457 2458 static int hci_resolve_name(struct hci_dev *hdev, 2459 struct inquiry_entry *e) 2460 { 2461 struct hci_cp_remote_name_req cp; 2462 2463 memset(&cp, 0, sizeof(cp)); 2464 2465 bacpy(&cp.bdaddr, &e->data.bdaddr); 2466 cp.pscan_rep_mode = e->data.pscan_rep_mode; 2467 cp.pscan_mode = e->data.pscan_mode; 2468 cp.clock_offset = e->data.clock_offset; 2469 2470 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 2471 } 2472 2473 static bool hci_resolve_next_name(struct hci_dev *hdev) 2474 { 2475 struct discovery_state *discov = &hdev->discovery; 2476 struct inquiry_entry *e; 2477 2478 if (list_empty(&discov->resolve)) 2479 return false; 2480 2481 /* We should stop if we already spent too much time resolving names. */ 2482 if (time_after(jiffies, discov->name_resolve_timeout)) { 2483 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); 2484 return false; 2485 } 2486 2487 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2488 if (!e) 2489 return false; 2490 2491 if (hci_resolve_name(hdev, e) == 0) { 2492 e->name_state = NAME_PENDING; 2493 return true; 2494 } 2495 2496 return false; 2497 } 2498 2499 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2500 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2501 { 2502 struct discovery_state *discov = &hdev->discovery; 2503 struct inquiry_entry *e; 2504 2505 /* Update the mgmt connected state if necessary. Be careful with 2506 * conn objects that exist but are not (yet) connected however. 2507 * Only those in BT_CONFIG or BT_CONNECTED states can be 2508 * considered connected. 2509 */ 2510 if (conn && 2511 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) && 2512 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 2513 mgmt_device_connected(hdev, conn, name, name_len); 2514 2515 if (discov->state == DISCOVERY_STOPPED) 2516 return; 2517 2518 if (discov->state == DISCOVERY_STOPPING) 2519 goto discov_complete; 2520 2521 if (discov->state != DISCOVERY_RESOLVING) 2522 return; 2523 2524 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2525 /* If the device was not found in a list of found devices names of which 2526 * are pending. there is no need to continue resolving a next name as it 2527 * will be done upon receiving another Remote Name Request Complete 2528 * Event */ 2529 if (!e) 2530 return; 2531 2532 list_del(&e->list); 2533 2534 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; 2535 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, 2536 name, name_len); 2537 2538 if (hci_resolve_next_name(hdev)) 2539 return; 2540 2541 discov_complete: 2542 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2543 } 2544 2545 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2546 { 2547 struct hci_cp_remote_name_req *cp; 2548 struct hci_conn *conn; 2549 2550 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2551 2552 /* If successful wait for the name req complete event before 2553 * checking for the need to do authentication */ 2554 if (!status) 2555 return; 2556 2557 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2558 if (!cp) 2559 return; 2560 2561 hci_dev_lock(hdev); 2562 2563 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2564 2565 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2566 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2567 2568 if (!conn) 2569 goto unlock; 2570 2571 if (!hci_outgoing_auth_needed(hdev, conn)) 2572 goto unlock; 2573 2574 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2575 struct hci_cp_auth_requested auth_cp; 2576 2577 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2578 2579 auth_cp.handle = __cpu_to_le16(conn->handle); 2580 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2581 sizeof(auth_cp), &auth_cp); 2582 } 2583 2584 unlock: 2585 hci_dev_unlock(hdev); 2586 } 2587 2588 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2589 { 2590 struct hci_cp_read_remote_features *cp; 2591 struct hci_conn *conn; 2592 2593 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2594 2595 if (!status) 2596 return; 2597 2598 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2599 if (!cp) 2600 return; 2601 2602 hci_dev_lock(hdev); 2603 2604 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2605 if (conn) { 2606 if (conn->state == BT_CONFIG) { 2607 hci_connect_cfm(conn, status); 2608 hci_conn_drop(conn); 2609 } 2610 } 2611 2612 hci_dev_unlock(hdev); 2613 } 2614 2615 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2616 { 2617 struct hci_cp_read_remote_ext_features *cp; 2618 struct hci_conn *conn; 2619 2620 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2621 2622 if (!status) 2623 return; 2624 2625 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2626 if (!cp) 2627 return; 2628 2629 hci_dev_lock(hdev); 2630 2631 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2632 if (conn) { 2633 if (conn->state == BT_CONFIG) { 2634 hci_connect_cfm(conn, status); 2635 hci_conn_drop(conn); 2636 } 2637 } 2638 2639 hci_dev_unlock(hdev); 2640 } 2641 2642 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, 2643 __u8 status) 2644 { 2645 struct hci_conn *acl; 2646 struct hci_link *link; 2647 2648 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); 2649 2650 hci_dev_lock(hdev); 2651 2652 acl = hci_conn_hash_lookup_handle(hdev, handle); 2653 if (acl) { 2654 link = list_first_entry_or_null(&acl->link_list, 2655 struct hci_link, list); 2656 if (link && link->conn) { 2657 link->conn->state = BT_CLOSED; 2658 2659 hci_connect_cfm(link->conn, status); 2660 hci_conn_del(link->conn); 2661 } 2662 } 2663 2664 hci_dev_unlock(hdev); 2665 } 2666 2667 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2668 { 2669 struct hci_cp_setup_sync_conn *cp; 2670 2671 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2672 2673 if (!status) 2674 return; 2675 2676 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2677 if (!cp) 2678 return; 2679 2680 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2681 } 2682 2683 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2684 { 2685 struct hci_cp_enhanced_setup_sync_conn *cp; 2686 2687 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2688 2689 if (!status) 2690 return; 2691 2692 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); 2693 if (!cp) 2694 return; 2695 2696 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2697 } 2698 2699 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2700 { 2701 struct hci_cp_sniff_mode *cp; 2702 struct hci_conn *conn; 2703 2704 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2705 2706 if (!status) 2707 return; 2708 2709 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2710 if (!cp) 2711 return; 2712 2713 hci_dev_lock(hdev); 2714 2715 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2716 if (conn) { 2717 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2718 2719 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2720 hci_sco_setup(conn, status); 2721 } 2722 2723 hci_dev_unlock(hdev); 2724 } 2725 2726 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2727 { 2728 struct hci_cp_exit_sniff_mode *cp; 2729 struct hci_conn *conn; 2730 2731 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2732 2733 if (!status) 2734 return; 2735 2736 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2737 if (!cp) 2738 return; 2739 2740 hci_dev_lock(hdev); 2741 2742 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2743 if (conn) { 2744 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2745 2746 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2747 hci_sco_setup(conn, status); 2748 } 2749 2750 hci_dev_unlock(hdev); 2751 } 2752 2753 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2754 { 2755 struct hci_cp_disconnect *cp; 2756 struct hci_conn_params *params; 2757 struct hci_conn *conn; 2758 bool mgmt_conn; 2759 2760 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2761 2762 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended 2763 * otherwise cleanup the connection immediately. 2764 */ 2765 if (!status && !hdev->suspended) 2766 return; 2767 2768 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2769 if (!cp) 2770 return; 2771 2772 hci_dev_lock(hdev); 2773 2774 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2775 if (!conn) 2776 goto unlock; 2777 2778 if (status) { 2779 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2780 conn->dst_type, status); 2781 2782 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 2783 hdev->cur_adv_instance = conn->adv_instance; 2784 hci_enable_advertising(hdev); 2785 } 2786 2787 goto done; 2788 } 2789 2790 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2791 2792 if (conn->type == ACL_LINK) { 2793 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2794 hci_remove_link_key(hdev, &conn->dst); 2795 } 2796 2797 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2798 if (params) { 2799 switch (params->auto_connect) { 2800 case HCI_AUTO_CONN_LINK_LOSS: 2801 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2802 break; 2803 fallthrough; 2804 2805 case HCI_AUTO_CONN_DIRECT: 2806 case HCI_AUTO_CONN_ALWAYS: 2807 list_del_init(¶ms->action); 2808 list_add(¶ms->action, &hdev->pend_le_conns); 2809 break; 2810 2811 default: 2812 break; 2813 } 2814 } 2815 2816 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2817 cp->reason, mgmt_conn); 2818 2819 hci_disconn_cfm(conn, cp->reason); 2820 2821 done: 2822 /* If the disconnection failed for any reason, the upper layer 2823 * does not retry to disconnect in current implementation. 2824 * Hence, we need to do some basic cleanup here and re-enable 2825 * advertising if necessary. 2826 */ 2827 hci_conn_del(conn); 2828 unlock: 2829 hci_dev_unlock(hdev); 2830 } 2831 2832 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2833 { 2834 /* When using controller based address resolution, then the new 2835 * address types 0x02 and 0x03 are used. These types need to be 2836 * converted back into either public address or random address type 2837 */ 2838 switch (type) { 2839 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2840 if (resolved) 2841 *resolved = true; 2842 return ADDR_LE_DEV_PUBLIC; 2843 case ADDR_LE_DEV_RANDOM_RESOLVED: 2844 if (resolved) 2845 *resolved = true; 2846 return ADDR_LE_DEV_RANDOM; 2847 } 2848 2849 if (resolved) 2850 *resolved = false; 2851 return type; 2852 } 2853 2854 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2855 u8 peer_addr_type, u8 own_address_type, 2856 u8 filter_policy) 2857 { 2858 struct hci_conn *conn; 2859 2860 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2861 peer_addr_type); 2862 if (!conn) 2863 return; 2864 2865 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2866 2867 /* Store the initiator and responder address information which 2868 * is needed for SMP. These values will not change during the 2869 * lifetime of the connection. 2870 */ 2871 conn->init_addr_type = own_address_type; 2872 if (own_address_type == ADDR_LE_DEV_RANDOM) 2873 bacpy(&conn->init_addr, &hdev->random_addr); 2874 else 2875 bacpy(&conn->init_addr, &hdev->bdaddr); 2876 2877 conn->resp_addr_type = peer_addr_type; 2878 bacpy(&conn->resp_addr, peer_addr); 2879 } 2880 2881 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2882 { 2883 struct hci_cp_le_create_conn *cp; 2884 2885 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2886 2887 /* All connection failure handling is taken care of by the 2888 * hci_conn_failed function which is triggered by the HCI 2889 * request completion callbacks used for connecting. 2890 */ 2891 if (status) 2892 return; 2893 2894 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2895 if (!cp) 2896 return; 2897 2898 hci_dev_lock(hdev); 2899 2900 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2901 cp->own_address_type, cp->filter_policy); 2902 2903 hci_dev_unlock(hdev); 2904 } 2905 2906 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2907 { 2908 struct hci_cp_le_ext_create_conn *cp; 2909 2910 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2911 2912 /* All connection failure handling is taken care of by the 2913 * hci_conn_failed function which is triggered by the HCI 2914 * request completion callbacks used for connecting. 2915 */ 2916 if (status) 2917 return; 2918 2919 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2920 if (!cp) 2921 return; 2922 2923 hci_dev_lock(hdev); 2924 2925 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2926 cp->own_addr_type, cp->filter_policy); 2927 2928 hci_dev_unlock(hdev); 2929 } 2930 2931 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2932 { 2933 struct hci_cp_le_read_remote_features *cp; 2934 struct hci_conn *conn; 2935 2936 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2937 2938 if (!status) 2939 return; 2940 2941 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2942 if (!cp) 2943 return; 2944 2945 hci_dev_lock(hdev); 2946 2947 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2948 if (conn) { 2949 if (conn->state == BT_CONFIG) { 2950 hci_connect_cfm(conn, status); 2951 hci_conn_drop(conn); 2952 } 2953 } 2954 2955 hci_dev_unlock(hdev); 2956 } 2957 2958 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2959 { 2960 struct hci_cp_le_start_enc *cp; 2961 struct hci_conn *conn; 2962 2963 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2964 2965 if (!status) 2966 return; 2967 2968 hci_dev_lock(hdev); 2969 2970 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2971 if (!cp) 2972 goto unlock; 2973 2974 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2975 if (!conn) 2976 goto unlock; 2977 2978 if (conn->state != BT_CONNECTED) 2979 goto unlock; 2980 2981 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2982 hci_conn_drop(conn); 2983 2984 unlock: 2985 hci_dev_unlock(hdev); 2986 } 2987 2988 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2989 { 2990 struct hci_cp_switch_role *cp; 2991 struct hci_conn *conn; 2992 2993 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2994 2995 if (!status) 2996 return; 2997 2998 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 2999 if (!cp) 3000 return; 3001 3002 hci_dev_lock(hdev); 3003 3004 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 3005 if (conn) 3006 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 3007 3008 hci_dev_unlock(hdev); 3009 } 3010 3011 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 3012 struct sk_buff *skb) 3013 { 3014 struct hci_ev_status *ev = data; 3015 struct discovery_state *discov = &hdev->discovery; 3016 struct inquiry_entry *e; 3017 3018 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3019 3020 hci_conn_check_pending(hdev); 3021 3022 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 3023 return; 3024 3025 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 3026 wake_up_bit(&hdev->flags, HCI_INQUIRY); 3027 3028 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3029 return; 3030 3031 hci_dev_lock(hdev); 3032 3033 if (discov->state != DISCOVERY_FINDING) 3034 goto unlock; 3035 3036 if (list_empty(&discov->resolve)) { 3037 /* When BR/EDR inquiry is active and no LE scanning is in 3038 * progress, then change discovery state to indicate completion. 3039 * 3040 * When running LE scanning and BR/EDR inquiry simultaneously 3041 * and the LE scan already finished, then change the discovery 3042 * state to indicate completion. 3043 */ 3044 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3045 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3046 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3047 goto unlock; 3048 } 3049 3050 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 3051 if (e && hci_resolve_name(hdev, e) == 0) { 3052 e->name_state = NAME_PENDING; 3053 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 3054 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 3055 } else { 3056 /* When BR/EDR inquiry is active and no LE scanning is in 3057 * progress, then change discovery state to indicate completion. 3058 * 3059 * When running LE scanning and BR/EDR inquiry simultaneously 3060 * and the LE scan already finished, then change the discovery 3061 * state to indicate completion. 3062 */ 3063 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3064 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3065 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3066 } 3067 3068 unlock: 3069 hci_dev_unlock(hdev); 3070 } 3071 3072 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3073 struct sk_buff *skb) 3074 { 3075 struct hci_ev_inquiry_result *ev = edata; 3076 struct inquiry_data data; 3077 int i; 3078 3079 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3080 flex_array_size(ev, info, ev->num))) 3081 return; 3082 3083 bt_dev_dbg(hdev, "num %d", ev->num); 3084 3085 if (!ev->num) 3086 return; 3087 3088 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3089 return; 3090 3091 hci_dev_lock(hdev); 3092 3093 for (i = 0; i < ev->num; i++) { 3094 struct inquiry_info *info = &ev->info[i]; 3095 u32 flags; 3096 3097 bacpy(&data.bdaddr, &info->bdaddr); 3098 data.pscan_rep_mode = info->pscan_rep_mode; 3099 data.pscan_period_mode = info->pscan_period_mode; 3100 data.pscan_mode = info->pscan_mode; 3101 memcpy(data.dev_class, info->dev_class, 3); 3102 data.clock_offset = info->clock_offset; 3103 data.rssi = HCI_RSSI_INVALID; 3104 data.ssp_mode = 0x00; 3105 3106 flags = hci_inquiry_cache_update(hdev, &data, false); 3107 3108 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3109 info->dev_class, HCI_RSSI_INVALID, 3110 flags, NULL, 0, NULL, 0, 0); 3111 } 3112 3113 hci_dev_unlock(hdev); 3114 } 3115 3116 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3117 struct sk_buff *skb) 3118 { 3119 struct hci_ev_conn_complete *ev = data; 3120 struct hci_conn *conn; 3121 u8 status = ev->status; 3122 3123 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3124 3125 hci_dev_lock(hdev); 3126 3127 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3128 if (!conn) { 3129 /* In case of error status and there is no connection pending 3130 * just unlock as there is nothing to cleanup. 3131 */ 3132 if (ev->status) 3133 goto unlock; 3134 3135 /* Connection may not exist if auto-connected. Check the bredr 3136 * allowlist to see if this device is allowed to auto connect. 3137 * If link is an ACL type, create a connection class 3138 * automatically. 3139 * 3140 * Auto-connect will only occur if the event filter is 3141 * programmed with a given address. Right now, event filter is 3142 * only used during suspend. 3143 */ 3144 if (ev->link_type == ACL_LINK && 3145 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3146 &ev->bdaddr, 3147 BDADDR_BREDR)) { 3148 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, 3149 HCI_ROLE_SLAVE); 3150 if (!conn) { 3151 bt_dev_err(hdev, "no memory for new conn"); 3152 goto unlock; 3153 } 3154 } else { 3155 if (ev->link_type != SCO_LINK) 3156 goto unlock; 3157 3158 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3159 &ev->bdaddr); 3160 if (!conn) 3161 goto unlock; 3162 3163 conn->type = SCO_LINK; 3164 } 3165 } 3166 3167 /* The HCI_Connection_Complete event is only sent once per connection. 3168 * Processing it more than once per connection can corrupt kernel memory. 3169 * 3170 * As the connection handle is set here for the first time, it indicates 3171 * whether the connection is already set up. 3172 */ 3173 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 3174 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3175 goto unlock; 3176 } 3177 3178 if (!status) { 3179 conn->handle = __le16_to_cpu(ev->handle); 3180 if (conn->handle > HCI_CONN_HANDLE_MAX) { 3181 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", 3182 conn->handle, HCI_CONN_HANDLE_MAX); 3183 status = HCI_ERROR_INVALID_PARAMETERS; 3184 goto done; 3185 } 3186 3187 if (conn->type == ACL_LINK) { 3188 conn->state = BT_CONFIG; 3189 hci_conn_hold(conn); 3190 3191 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3192 !hci_find_link_key(hdev, &ev->bdaddr)) 3193 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3194 else 3195 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3196 } else 3197 conn->state = BT_CONNECTED; 3198 3199 hci_debugfs_create_conn(conn); 3200 hci_conn_add_sysfs(conn); 3201 3202 if (test_bit(HCI_AUTH, &hdev->flags)) 3203 set_bit(HCI_CONN_AUTH, &conn->flags); 3204 3205 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3206 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3207 3208 /* Get remote features */ 3209 if (conn->type == ACL_LINK) { 3210 struct hci_cp_read_remote_features cp; 3211 cp.handle = ev->handle; 3212 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3213 sizeof(cp), &cp); 3214 3215 hci_update_scan(hdev); 3216 } 3217 3218 /* Set packet type for incoming connection */ 3219 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3220 struct hci_cp_change_conn_ptype cp; 3221 cp.handle = ev->handle; 3222 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3223 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3224 &cp); 3225 } 3226 } 3227 3228 if (conn->type == ACL_LINK) 3229 hci_sco_setup(conn, ev->status); 3230 3231 done: 3232 if (status) { 3233 hci_conn_failed(conn, status); 3234 } else if (ev->link_type == SCO_LINK) { 3235 switch (conn->setting & SCO_AIRMODE_MASK) { 3236 case SCO_AIRMODE_CVSD: 3237 if (hdev->notify) 3238 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3239 break; 3240 } 3241 3242 hci_connect_cfm(conn, status); 3243 } 3244 3245 unlock: 3246 hci_dev_unlock(hdev); 3247 3248 hci_conn_check_pending(hdev); 3249 } 3250 3251 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3252 { 3253 struct hci_cp_reject_conn_req cp; 3254 3255 bacpy(&cp.bdaddr, bdaddr); 3256 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3257 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3258 } 3259 3260 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3261 struct sk_buff *skb) 3262 { 3263 struct hci_ev_conn_request *ev = data; 3264 int mask = hdev->link_mode; 3265 struct inquiry_entry *ie; 3266 struct hci_conn *conn; 3267 __u8 flags = 0; 3268 3269 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3270 3271 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3272 &flags); 3273 3274 if (!(mask & HCI_LM_ACCEPT)) { 3275 hci_reject_conn(hdev, &ev->bdaddr); 3276 return; 3277 } 3278 3279 hci_dev_lock(hdev); 3280 3281 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3282 BDADDR_BREDR)) { 3283 hci_reject_conn(hdev, &ev->bdaddr); 3284 goto unlock; 3285 } 3286 3287 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3288 * connection. These features are only touched through mgmt so 3289 * only do the checks if HCI_MGMT is set. 3290 */ 3291 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3292 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3293 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3294 BDADDR_BREDR)) { 3295 hci_reject_conn(hdev, &ev->bdaddr); 3296 goto unlock; 3297 } 3298 3299 /* Connection accepted */ 3300 3301 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3302 if (ie) 3303 memcpy(ie->data.dev_class, ev->dev_class, 3); 3304 3305 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3306 &ev->bdaddr); 3307 if (!conn) { 3308 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, 3309 HCI_ROLE_SLAVE); 3310 if (!conn) { 3311 bt_dev_err(hdev, "no memory for new connection"); 3312 goto unlock; 3313 } 3314 } 3315 3316 memcpy(conn->dev_class, ev->dev_class, 3); 3317 3318 hci_dev_unlock(hdev); 3319 3320 if (ev->link_type == ACL_LINK || 3321 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3322 struct hci_cp_accept_conn_req cp; 3323 conn->state = BT_CONNECT; 3324 3325 bacpy(&cp.bdaddr, &ev->bdaddr); 3326 3327 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3328 cp.role = 0x00; /* Become central */ 3329 else 3330 cp.role = 0x01; /* Remain peripheral */ 3331 3332 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3333 } else if (!(flags & HCI_PROTO_DEFER)) { 3334 struct hci_cp_accept_sync_conn_req cp; 3335 conn->state = BT_CONNECT; 3336 3337 bacpy(&cp.bdaddr, &ev->bdaddr); 3338 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3339 3340 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3341 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3342 cp.max_latency = cpu_to_le16(0xffff); 3343 cp.content_format = cpu_to_le16(hdev->voice_setting); 3344 cp.retrans_effort = 0xff; 3345 3346 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3347 &cp); 3348 } else { 3349 conn->state = BT_CONNECT2; 3350 hci_connect_cfm(conn, 0); 3351 } 3352 3353 return; 3354 unlock: 3355 hci_dev_unlock(hdev); 3356 } 3357 3358 static u8 hci_to_mgmt_reason(u8 err) 3359 { 3360 switch (err) { 3361 case HCI_ERROR_CONNECTION_TIMEOUT: 3362 return MGMT_DEV_DISCONN_TIMEOUT; 3363 case HCI_ERROR_REMOTE_USER_TERM: 3364 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3365 case HCI_ERROR_REMOTE_POWER_OFF: 3366 return MGMT_DEV_DISCONN_REMOTE; 3367 case HCI_ERROR_LOCAL_HOST_TERM: 3368 return MGMT_DEV_DISCONN_LOCAL_HOST; 3369 default: 3370 return MGMT_DEV_DISCONN_UNKNOWN; 3371 } 3372 } 3373 3374 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3375 struct sk_buff *skb) 3376 { 3377 struct hci_ev_disconn_complete *ev = data; 3378 u8 reason; 3379 struct hci_conn_params *params; 3380 struct hci_conn *conn; 3381 bool mgmt_connected; 3382 3383 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3384 3385 hci_dev_lock(hdev); 3386 3387 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3388 if (!conn) 3389 goto unlock; 3390 3391 if (ev->status) { 3392 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3393 conn->dst_type, ev->status); 3394 goto unlock; 3395 } 3396 3397 conn->state = BT_CLOSED; 3398 3399 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3400 3401 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3402 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3403 else 3404 reason = hci_to_mgmt_reason(ev->reason); 3405 3406 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3407 reason, mgmt_connected); 3408 3409 if (conn->type == ACL_LINK) { 3410 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3411 hci_remove_link_key(hdev, &conn->dst); 3412 3413 hci_update_scan(hdev); 3414 } 3415 3416 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 3417 if (params) { 3418 switch (params->auto_connect) { 3419 case HCI_AUTO_CONN_LINK_LOSS: 3420 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3421 break; 3422 fallthrough; 3423 3424 case HCI_AUTO_CONN_DIRECT: 3425 case HCI_AUTO_CONN_ALWAYS: 3426 list_del_init(¶ms->action); 3427 list_add(¶ms->action, &hdev->pend_le_conns); 3428 hci_update_passive_scan(hdev); 3429 break; 3430 3431 default: 3432 break; 3433 } 3434 } 3435 3436 hci_disconn_cfm(conn, ev->reason); 3437 3438 /* Re-enable advertising if necessary, since it might 3439 * have been disabled by the connection. From the 3440 * HCI_LE_Set_Advertise_Enable command description in 3441 * the core specification (v4.0): 3442 * "The Controller shall continue advertising until the Host 3443 * issues an LE_Set_Advertise_Enable command with 3444 * Advertising_Enable set to 0x00 (Advertising is disabled) 3445 * or until a connection is created or until the Advertising 3446 * is timed out due to Directed Advertising." 3447 */ 3448 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3449 hdev->cur_adv_instance = conn->adv_instance; 3450 hci_enable_advertising(hdev); 3451 } 3452 3453 hci_conn_del(conn); 3454 3455 unlock: 3456 hci_dev_unlock(hdev); 3457 } 3458 3459 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3460 struct sk_buff *skb) 3461 { 3462 struct hci_ev_auth_complete *ev = data; 3463 struct hci_conn *conn; 3464 3465 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3466 3467 hci_dev_lock(hdev); 3468 3469 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3470 if (!conn) 3471 goto unlock; 3472 3473 if (!ev->status) { 3474 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3475 3476 if (!hci_conn_ssp_enabled(conn) && 3477 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) { 3478 bt_dev_info(hdev, "re-auth of legacy device is not possible."); 3479 } else { 3480 set_bit(HCI_CONN_AUTH, &conn->flags); 3481 conn->sec_level = conn->pending_sec_level; 3482 } 3483 } else { 3484 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3485 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3486 3487 mgmt_auth_failed(conn, ev->status); 3488 } 3489 3490 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3491 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags); 3492 3493 if (conn->state == BT_CONFIG) { 3494 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3495 struct hci_cp_set_conn_encrypt cp; 3496 cp.handle = ev->handle; 3497 cp.encrypt = 0x01; 3498 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3499 &cp); 3500 } else { 3501 conn->state = BT_CONNECTED; 3502 hci_connect_cfm(conn, ev->status); 3503 hci_conn_drop(conn); 3504 } 3505 } else { 3506 hci_auth_cfm(conn, ev->status); 3507 3508 hci_conn_hold(conn); 3509 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3510 hci_conn_drop(conn); 3511 } 3512 3513 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3514 if (!ev->status) { 3515 struct hci_cp_set_conn_encrypt cp; 3516 cp.handle = ev->handle; 3517 cp.encrypt = 0x01; 3518 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3519 &cp); 3520 } else { 3521 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3522 hci_encrypt_cfm(conn, ev->status); 3523 } 3524 } 3525 3526 unlock: 3527 hci_dev_unlock(hdev); 3528 } 3529 3530 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3531 struct sk_buff *skb) 3532 { 3533 struct hci_ev_remote_name *ev = data; 3534 struct hci_conn *conn; 3535 3536 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3537 3538 hci_conn_check_pending(hdev); 3539 3540 hci_dev_lock(hdev); 3541 3542 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3543 3544 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3545 goto check_auth; 3546 3547 if (ev->status == 0) 3548 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3549 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3550 else 3551 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3552 3553 check_auth: 3554 if (!conn) 3555 goto unlock; 3556 3557 if (!hci_outgoing_auth_needed(hdev, conn)) 3558 goto unlock; 3559 3560 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3561 struct hci_cp_auth_requested cp; 3562 3563 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3564 3565 cp.handle = __cpu_to_le16(conn->handle); 3566 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3567 } 3568 3569 unlock: 3570 hci_dev_unlock(hdev); 3571 } 3572 3573 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3574 struct sk_buff *skb) 3575 { 3576 struct hci_ev_encrypt_change *ev = data; 3577 struct hci_conn *conn; 3578 3579 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3580 3581 hci_dev_lock(hdev); 3582 3583 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3584 if (!conn) 3585 goto unlock; 3586 3587 if (!ev->status) { 3588 if (ev->encrypt) { 3589 /* Encryption implies authentication */ 3590 set_bit(HCI_CONN_AUTH, &conn->flags); 3591 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3592 conn->sec_level = conn->pending_sec_level; 3593 3594 /* P-256 authentication key implies FIPS */ 3595 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3596 set_bit(HCI_CONN_FIPS, &conn->flags); 3597 3598 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3599 conn->type == LE_LINK) 3600 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3601 } else { 3602 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3603 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3604 } 3605 } 3606 3607 /* We should disregard the current RPA and generate a new one 3608 * whenever the encryption procedure fails. 3609 */ 3610 if (ev->status && conn->type == LE_LINK) { 3611 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3612 hci_adv_instances_set_rpa_expired(hdev, true); 3613 } 3614 3615 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3616 3617 /* Check link security requirements are met */ 3618 if (!hci_conn_check_link_mode(conn)) 3619 ev->status = HCI_ERROR_AUTH_FAILURE; 3620 3621 if (ev->status && conn->state == BT_CONNECTED) { 3622 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3623 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3624 3625 /* Notify upper layers so they can cleanup before 3626 * disconnecting. 3627 */ 3628 hci_encrypt_cfm(conn, ev->status); 3629 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3630 hci_conn_drop(conn); 3631 goto unlock; 3632 } 3633 3634 /* Try reading the encryption key size for encrypted ACL links */ 3635 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3636 struct hci_cp_read_enc_key_size cp; 3637 3638 /* Only send HCI_Read_Encryption_Key_Size if the 3639 * controller really supports it. If it doesn't, assume 3640 * the default size (16). 3641 */ 3642 if (!(hdev->commands[20] & 0x10)) { 3643 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3644 goto notify; 3645 } 3646 3647 cp.handle = cpu_to_le16(conn->handle); 3648 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3649 sizeof(cp), &cp)) { 3650 bt_dev_err(hdev, "sending read key size failed"); 3651 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3652 goto notify; 3653 } 3654 3655 goto unlock; 3656 } 3657 3658 /* Set the default Authenticated Payload Timeout after 3659 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3660 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3661 * sent when the link is active and Encryption is enabled, the conn 3662 * type can be either LE or ACL and controller must support LMP Ping. 3663 * Ensure for AES-CCM encryption as well. 3664 */ 3665 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3666 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3667 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3668 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3669 struct hci_cp_write_auth_payload_to cp; 3670 3671 cp.handle = cpu_to_le16(conn->handle); 3672 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3673 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3674 sizeof(cp), &cp)) { 3675 bt_dev_err(hdev, "write auth payload timeout failed"); 3676 goto notify; 3677 } 3678 3679 goto unlock; 3680 } 3681 3682 notify: 3683 hci_encrypt_cfm(conn, ev->status); 3684 3685 unlock: 3686 hci_dev_unlock(hdev); 3687 } 3688 3689 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3690 struct sk_buff *skb) 3691 { 3692 struct hci_ev_change_link_key_complete *ev = data; 3693 struct hci_conn *conn; 3694 3695 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3696 3697 hci_dev_lock(hdev); 3698 3699 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3700 if (conn) { 3701 if (!ev->status) 3702 set_bit(HCI_CONN_SECURE, &conn->flags); 3703 3704 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3705 3706 hci_key_change_cfm(conn, ev->status); 3707 } 3708 3709 hci_dev_unlock(hdev); 3710 } 3711 3712 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3713 struct sk_buff *skb) 3714 { 3715 struct hci_ev_remote_features *ev = data; 3716 struct hci_conn *conn; 3717 3718 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3719 3720 hci_dev_lock(hdev); 3721 3722 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3723 if (!conn) 3724 goto unlock; 3725 3726 if (!ev->status) 3727 memcpy(conn->features[0], ev->features, 8); 3728 3729 if (conn->state != BT_CONFIG) 3730 goto unlock; 3731 3732 if (!ev->status && lmp_ext_feat_capable(hdev) && 3733 lmp_ext_feat_capable(conn)) { 3734 struct hci_cp_read_remote_ext_features cp; 3735 cp.handle = ev->handle; 3736 cp.page = 0x01; 3737 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3738 sizeof(cp), &cp); 3739 goto unlock; 3740 } 3741 3742 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 3743 struct hci_cp_remote_name_req cp; 3744 memset(&cp, 0, sizeof(cp)); 3745 bacpy(&cp.bdaddr, &conn->dst); 3746 cp.pscan_rep_mode = 0x02; 3747 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3748 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 3749 mgmt_device_connected(hdev, conn, NULL, 0); 3750 3751 if (!hci_outgoing_auth_needed(hdev, conn)) { 3752 conn->state = BT_CONNECTED; 3753 hci_connect_cfm(conn, ev->status); 3754 hci_conn_drop(conn); 3755 } 3756 3757 unlock: 3758 hci_dev_unlock(hdev); 3759 } 3760 3761 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3762 { 3763 cancel_delayed_work(&hdev->cmd_timer); 3764 3765 rcu_read_lock(); 3766 if (!test_bit(HCI_RESET, &hdev->flags)) { 3767 if (ncmd) { 3768 cancel_delayed_work(&hdev->ncmd_timer); 3769 atomic_set(&hdev->cmd_cnt, 1); 3770 } else { 3771 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3772 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3773 HCI_NCMD_TIMEOUT); 3774 } 3775 } 3776 rcu_read_unlock(); 3777 } 3778 3779 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3780 struct sk_buff *skb) 3781 { 3782 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3783 3784 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3785 3786 if (rp->status) 3787 return rp->status; 3788 3789 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3790 hdev->le_pkts = rp->acl_max_pkt; 3791 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3792 hdev->iso_pkts = rp->iso_max_pkt; 3793 3794 hdev->le_cnt = hdev->le_pkts; 3795 hdev->iso_cnt = hdev->iso_pkts; 3796 3797 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3798 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3799 3800 return rp->status; 3801 } 3802 3803 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3804 struct sk_buff *skb) 3805 { 3806 struct hci_rp_le_set_cig_params *rp = data; 3807 struct hci_conn *conn; 3808 int i = 0; 3809 3810 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3811 3812 hci_dev_lock(hdev); 3813 3814 if (rp->status) { 3815 while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) { 3816 conn->state = BT_CLOSED; 3817 hci_connect_cfm(conn, rp->status); 3818 hci_conn_del(conn); 3819 } 3820 goto unlock; 3821 } 3822 3823 rcu_read_lock(); 3824 3825 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) { 3826 if (conn->type != ISO_LINK || 3827 conn->iso_qos.ucast.cig != rp->cig_id || 3828 conn->state == BT_CONNECTED) 3829 continue; 3830 3831 conn->handle = __le16_to_cpu(rp->handle[i++]); 3832 3833 bt_dev_dbg(hdev, "%p handle 0x%4.4x parent %p", conn, 3834 conn->handle, conn->parent); 3835 3836 /* Create CIS if LE is already connected */ 3837 if (conn->parent && conn->parent->state == BT_CONNECTED) { 3838 rcu_read_unlock(); 3839 hci_le_create_cis(conn); 3840 rcu_read_lock(); 3841 } 3842 3843 if (i == rp->num_handles) 3844 break; 3845 } 3846 3847 rcu_read_unlock(); 3848 3849 unlock: 3850 hci_dev_unlock(hdev); 3851 3852 return rp->status; 3853 } 3854 3855 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3856 struct sk_buff *skb) 3857 { 3858 struct hci_rp_le_setup_iso_path *rp = data; 3859 struct hci_cp_le_setup_iso_path *cp; 3860 struct hci_conn *conn; 3861 3862 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3863 3864 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3865 if (!cp) 3866 return rp->status; 3867 3868 hci_dev_lock(hdev); 3869 3870 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3871 if (!conn) 3872 goto unlock; 3873 3874 if (rp->status) { 3875 hci_connect_cfm(conn, rp->status); 3876 hci_conn_del(conn); 3877 goto unlock; 3878 } 3879 3880 switch (cp->direction) { 3881 /* Input (Host to Controller) */ 3882 case 0x00: 3883 /* Only confirm connection if output only */ 3884 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3885 hci_connect_cfm(conn, rp->status); 3886 break; 3887 /* Output (Controller to Host) */ 3888 case 0x01: 3889 /* Confirm connection since conn->iso_qos is always configured 3890 * last. 3891 */ 3892 hci_connect_cfm(conn, rp->status); 3893 break; 3894 } 3895 3896 unlock: 3897 hci_dev_unlock(hdev); 3898 return rp->status; 3899 } 3900 3901 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3902 { 3903 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3904 } 3905 3906 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3907 struct sk_buff *skb) 3908 { 3909 struct hci_ev_status *rp = data; 3910 struct hci_cp_le_set_per_adv_params *cp; 3911 3912 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3913 3914 if (rp->status) 3915 return rp->status; 3916 3917 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3918 if (!cp) 3919 return rp->status; 3920 3921 /* TODO: set the conn state */ 3922 return rp->status; 3923 } 3924 3925 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3926 struct sk_buff *skb) 3927 { 3928 struct hci_ev_status *rp = data; 3929 __u8 *sent; 3930 3931 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3932 3933 if (rp->status) 3934 return rp->status; 3935 3936 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3937 if (!sent) 3938 return rp->status; 3939 3940 hci_dev_lock(hdev); 3941 3942 if (*sent) 3943 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3944 else 3945 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3946 3947 hci_dev_unlock(hdev); 3948 3949 return rp->status; 3950 } 3951 3952 #define HCI_CC_VL(_op, _func, _min, _max) \ 3953 { \ 3954 .op = _op, \ 3955 .func = _func, \ 3956 .min_len = _min, \ 3957 .max_len = _max, \ 3958 } 3959 3960 #define HCI_CC(_op, _func, _len) \ 3961 HCI_CC_VL(_op, _func, _len, _len) 3962 3963 #define HCI_CC_STATUS(_op, _func) \ 3964 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 3965 3966 static const struct hci_cc { 3967 u16 op; 3968 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 3969 u16 min_len; 3970 u16 max_len; 3971 } hci_cc_table[] = { 3972 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 3973 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 3974 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 3975 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 3976 hci_cc_remote_name_req_cancel), 3977 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 3978 sizeof(struct hci_rp_role_discovery)), 3979 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 3980 sizeof(struct hci_rp_read_link_policy)), 3981 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 3982 sizeof(struct hci_rp_write_link_policy)), 3983 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 3984 sizeof(struct hci_rp_read_def_link_policy)), 3985 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 3986 hci_cc_write_def_link_policy), 3987 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 3988 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 3989 sizeof(struct hci_rp_read_stored_link_key)), 3990 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 3991 sizeof(struct hci_rp_delete_stored_link_key)), 3992 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 3993 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 3994 sizeof(struct hci_rp_read_local_name)), 3995 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 3996 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 3997 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 3998 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 3999 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4000 sizeof(struct hci_rp_read_class_of_dev)), 4001 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4002 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4003 sizeof(struct hci_rp_read_voice_setting)), 4004 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4005 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4006 sizeof(struct hci_rp_read_num_supported_iac)), 4007 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4008 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4009 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4010 sizeof(struct hci_rp_read_auth_payload_to)), 4011 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4012 sizeof(struct hci_rp_write_auth_payload_to)), 4013 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4014 sizeof(struct hci_rp_read_local_version)), 4015 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4016 sizeof(struct hci_rp_read_local_commands)), 4017 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4018 sizeof(struct hci_rp_read_local_features)), 4019 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4020 sizeof(struct hci_rp_read_local_ext_features)), 4021 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4022 sizeof(struct hci_rp_read_buffer_size)), 4023 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4024 sizeof(struct hci_rp_read_bd_addr)), 4025 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4026 sizeof(struct hci_rp_read_local_pairing_opts)), 4027 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4028 sizeof(struct hci_rp_read_page_scan_activity)), 4029 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4030 hci_cc_write_page_scan_activity), 4031 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4032 sizeof(struct hci_rp_read_page_scan_type)), 4033 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4034 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size, 4035 sizeof(struct hci_rp_read_data_block_size)), 4036 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode, 4037 sizeof(struct hci_rp_read_flow_control_mode)), 4038 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info, 4039 sizeof(struct hci_rp_read_local_amp_info)), 4040 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4041 sizeof(struct hci_rp_read_clock)), 4042 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4043 sizeof(struct hci_rp_read_enc_key_size)), 4044 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4045 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4046 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4047 hci_cc_read_def_err_data_reporting, 4048 sizeof(struct hci_rp_read_def_err_data_reporting)), 4049 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4050 hci_cc_write_def_err_data_reporting), 4051 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4052 sizeof(struct hci_rp_pin_code_reply)), 4053 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4054 sizeof(struct hci_rp_pin_code_neg_reply)), 4055 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4056 sizeof(struct hci_rp_read_local_oob_data)), 4057 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4058 sizeof(struct hci_rp_read_local_oob_ext_data)), 4059 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4060 sizeof(struct hci_rp_le_read_buffer_size)), 4061 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4062 sizeof(struct hci_rp_le_read_local_features)), 4063 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4064 sizeof(struct hci_rp_le_read_adv_tx_power)), 4065 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4066 sizeof(struct hci_rp_user_confirm_reply)), 4067 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4068 sizeof(struct hci_rp_user_confirm_reply)), 4069 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4070 sizeof(struct hci_rp_user_confirm_reply)), 4071 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4072 sizeof(struct hci_rp_user_confirm_reply)), 4073 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4074 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4075 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4076 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4077 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4078 hci_cc_le_read_accept_list_size, 4079 sizeof(struct hci_rp_le_read_accept_list_size)), 4080 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4081 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4082 hci_cc_le_add_to_accept_list), 4083 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4084 hci_cc_le_del_from_accept_list), 4085 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4086 sizeof(struct hci_rp_le_read_supported_states)), 4087 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4088 sizeof(struct hci_rp_le_read_def_data_len)), 4089 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4090 hci_cc_le_write_def_data_len), 4091 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4092 hci_cc_le_add_to_resolv_list), 4093 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4094 hci_cc_le_del_from_resolv_list), 4095 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4096 hci_cc_le_clear_resolv_list), 4097 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4098 sizeof(struct hci_rp_le_read_resolv_list_size)), 4099 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4100 hci_cc_le_set_addr_resolution_enable), 4101 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4102 sizeof(struct hci_rp_le_read_max_data_len)), 4103 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4104 hci_cc_write_le_host_supported), 4105 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4106 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4107 sizeof(struct hci_rp_read_rssi)), 4108 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4109 sizeof(struct hci_rp_read_tx_power)), 4110 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4111 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4112 hci_cc_le_set_ext_scan_param), 4113 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4114 hci_cc_le_set_ext_scan_enable), 4115 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4116 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4117 hci_cc_le_read_num_adv_sets, 4118 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4119 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4120 sizeof(struct hci_rp_le_set_ext_adv_params)), 4121 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4122 hci_cc_le_set_ext_adv_enable), 4123 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4124 hci_cc_le_set_adv_set_random_addr), 4125 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4126 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4127 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4128 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4129 hci_cc_le_set_per_adv_enable), 4130 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4131 sizeof(struct hci_rp_le_read_transmit_power)), 4132 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4133 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4134 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4135 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4136 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4137 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4138 sizeof(struct hci_rp_le_setup_iso_path)), 4139 }; 4140 4141 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4142 struct sk_buff *skb) 4143 { 4144 void *data; 4145 4146 if (skb->len < cc->min_len) { 4147 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4148 cc->op, skb->len, cc->min_len); 4149 return HCI_ERROR_UNSPECIFIED; 4150 } 4151 4152 /* Just warn if the length is over max_len size it still be possible to 4153 * partially parse the cc so leave to callback to decide if that is 4154 * acceptable. 4155 */ 4156 if (skb->len > cc->max_len) 4157 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4158 cc->op, skb->len, cc->max_len); 4159 4160 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4161 if (!data) 4162 return HCI_ERROR_UNSPECIFIED; 4163 4164 return cc->func(hdev, data, skb); 4165 } 4166 4167 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4168 struct sk_buff *skb, u16 *opcode, u8 *status, 4169 hci_req_complete_t *req_complete, 4170 hci_req_complete_skb_t *req_complete_skb) 4171 { 4172 struct hci_ev_cmd_complete *ev = data; 4173 int i; 4174 4175 *opcode = __le16_to_cpu(ev->opcode); 4176 4177 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4178 4179 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4180 if (hci_cc_table[i].op == *opcode) { 4181 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4182 break; 4183 } 4184 } 4185 4186 if (i == ARRAY_SIZE(hci_cc_table)) { 4187 /* Unknown opcode, assume byte 0 contains the status, so 4188 * that e.g. __hci_cmd_sync() properly returns errors 4189 * for vendor specific commands send by HCI drivers. 4190 * If a vendor doesn't actually follow this convention we may 4191 * need to introduce a vendor CC table in order to properly set 4192 * the status. 4193 */ 4194 *status = skb->data[0]; 4195 } 4196 4197 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4198 4199 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4200 req_complete_skb); 4201 4202 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4203 bt_dev_err(hdev, 4204 "unexpected event for opcode 0x%4.4x", *opcode); 4205 return; 4206 } 4207 4208 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4209 queue_work(hdev->workqueue, &hdev->cmd_work); 4210 } 4211 4212 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4213 { 4214 struct hci_cp_le_create_cis *cp; 4215 int i; 4216 4217 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4218 4219 if (!status) 4220 return; 4221 4222 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4223 if (!cp) 4224 return; 4225 4226 hci_dev_lock(hdev); 4227 4228 /* Remove connection if command failed */ 4229 for (i = 0; cp->num_cis; cp->num_cis--, i++) { 4230 struct hci_conn *conn; 4231 u16 handle; 4232 4233 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4234 4235 conn = hci_conn_hash_lookup_handle(hdev, handle); 4236 if (conn) { 4237 conn->state = BT_CLOSED; 4238 hci_connect_cfm(conn, status); 4239 hci_conn_del(conn); 4240 } 4241 } 4242 4243 hci_dev_unlock(hdev); 4244 } 4245 4246 #define HCI_CS(_op, _func) \ 4247 { \ 4248 .op = _op, \ 4249 .func = _func, \ 4250 } 4251 4252 static const struct hci_cs { 4253 u16 op; 4254 void (*func)(struct hci_dev *hdev, __u8 status); 4255 } hci_cs_table[] = { 4256 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4257 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4258 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4259 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4260 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4261 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4262 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4263 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4264 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4265 hci_cs_read_remote_ext_features), 4266 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4267 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4268 hci_cs_enhanced_setup_sync_conn), 4269 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4270 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4271 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4272 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4273 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4274 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4275 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4276 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4277 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4278 }; 4279 4280 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4281 struct sk_buff *skb, u16 *opcode, u8 *status, 4282 hci_req_complete_t *req_complete, 4283 hci_req_complete_skb_t *req_complete_skb) 4284 { 4285 struct hci_ev_cmd_status *ev = data; 4286 int i; 4287 4288 *opcode = __le16_to_cpu(ev->opcode); 4289 *status = ev->status; 4290 4291 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4292 4293 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4294 if (hci_cs_table[i].op == *opcode) { 4295 hci_cs_table[i].func(hdev, ev->status); 4296 break; 4297 } 4298 } 4299 4300 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4301 4302 /* Indicate request completion if the command failed. Also, if 4303 * we're not waiting for a special event and we get a success 4304 * command status we should try to flag the request as completed 4305 * (since for this kind of commands there will not be a command 4306 * complete event). 4307 */ 4308 if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) { 4309 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4310 req_complete_skb); 4311 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4312 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4313 *opcode); 4314 return; 4315 } 4316 } 4317 4318 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4319 queue_work(hdev->workqueue, &hdev->cmd_work); 4320 } 4321 4322 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4323 struct sk_buff *skb) 4324 { 4325 struct hci_ev_hardware_error *ev = data; 4326 4327 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4328 4329 hdev->hw_error_code = ev->code; 4330 4331 queue_work(hdev->req_workqueue, &hdev->error_reset); 4332 } 4333 4334 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4335 struct sk_buff *skb) 4336 { 4337 struct hci_ev_role_change *ev = data; 4338 struct hci_conn *conn; 4339 4340 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4341 4342 hci_dev_lock(hdev); 4343 4344 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4345 if (conn) { 4346 if (!ev->status) 4347 conn->role = ev->role; 4348 4349 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4350 4351 hci_role_switch_cfm(conn, ev->status, ev->role); 4352 } 4353 4354 hci_dev_unlock(hdev); 4355 } 4356 4357 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4358 struct sk_buff *skb) 4359 { 4360 struct hci_ev_num_comp_pkts *ev = data; 4361 int i; 4362 4363 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4364 flex_array_size(ev, handles, ev->num))) 4365 return; 4366 4367 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) { 4368 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode); 4369 return; 4370 } 4371 4372 bt_dev_dbg(hdev, "num %d", ev->num); 4373 4374 for (i = 0; i < ev->num; i++) { 4375 struct hci_comp_pkts_info *info = &ev->handles[i]; 4376 struct hci_conn *conn; 4377 __u16 handle, count; 4378 4379 handle = __le16_to_cpu(info->handle); 4380 count = __le16_to_cpu(info->count); 4381 4382 conn = hci_conn_hash_lookup_handle(hdev, handle); 4383 if (!conn) 4384 continue; 4385 4386 conn->sent -= count; 4387 4388 switch (conn->type) { 4389 case ACL_LINK: 4390 hdev->acl_cnt += count; 4391 if (hdev->acl_cnt > hdev->acl_pkts) 4392 hdev->acl_cnt = hdev->acl_pkts; 4393 break; 4394 4395 case LE_LINK: 4396 if (hdev->le_pkts) { 4397 hdev->le_cnt += count; 4398 if (hdev->le_cnt > hdev->le_pkts) 4399 hdev->le_cnt = hdev->le_pkts; 4400 } else { 4401 hdev->acl_cnt += count; 4402 if (hdev->acl_cnt > hdev->acl_pkts) 4403 hdev->acl_cnt = hdev->acl_pkts; 4404 } 4405 break; 4406 4407 case SCO_LINK: 4408 hdev->sco_cnt += count; 4409 if (hdev->sco_cnt > hdev->sco_pkts) 4410 hdev->sco_cnt = hdev->sco_pkts; 4411 break; 4412 4413 case ISO_LINK: 4414 if (hdev->iso_pkts) { 4415 hdev->iso_cnt += count; 4416 if (hdev->iso_cnt > hdev->iso_pkts) 4417 hdev->iso_cnt = hdev->iso_pkts; 4418 } else if (hdev->le_pkts) { 4419 hdev->le_cnt += count; 4420 if (hdev->le_cnt > hdev->le_pkts) 4421 hdev->le_cnt = hdev->le_pkts; 4422 } else { 4423 hdev->acl_cnt += count; 4424 if (hdev->acl_cnt > hdev->acl_pkts) 4425 hdev->acl_cnt = hdev->acl_pkts; 4426 } 4427 break; 4428 4429 default: 4430 bt_dev_err(hdev, "unknown type %d conn %p", 4431 conn->type, conn); 4432 break; 4433 } 4434 } 4435 4436 queue_work(hdev->workqueue, &hdev->tx_work); 4437 } 4438 4439 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev, 4440 __u16 handle) 4441 { 4442 struct hci_chan *chan; 4443 4444 switch (hdev->dev_type) { 4445 case HCI_PRIMARY: 4446 return hci_conn_hash_lookup_handle(hdev, handle); 4447 case HCI_AMP: 4448 chan = hci_chan_lookup_handle(hdev, handle); 4449 if (chan) 4450 return chan->conn; 4451 break; 4452 default: 4453 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); 4454 break; 4455 } 4456 4457 return NULL; 4458 } 4459 4460 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data, 4461 struct sk_buff *skb) 4462 { 4463 struct hci_ev_num_comp_blocks *ev = data; 4464 int i; 4465 4466 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS, 4467 flex_array_size(ev, handles, ev->num_hndl))) 4468 return; 4469 4470 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) { 4471 bt_dev_err(hdev, "wrong event for mode %d", 4472 hdev->flow_ctl_mode); 4473 return; 4474 } 4475 4476 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks, 4477 ev->num_hndl); 4478 4479 for (i = 0; i < ev->num_hndl; i++) { 4480 struct hci_comp_blocks_info *info = &ev->handles[i]; 4481 struct hci_conn *conn = NULL; 4482 __u16 handle, block_count; 4483 4484 handle = __le16_to_cpu(info->handle); 4485 block_count = __le16_to_cpu(info->blocks); 4486 4487 conn = __hci_conn_lookup_handle(hdev, handle); 4488 if (!conn) 4489 continue; 4490 4491 conn->sent -= block_count; 4492 4493 switch (conn->type) { 4494 case ACL_LINK: 4495 case AMP_LINK: 4496 hdev->block_cnt += block_count; 4497 if (hdev->block_cnt > hdev->num_blocks) 4498 hdev->block_cnt = hdev->num_blocks; 4499 break; 4500 4501 default: 4502 bt_dev_err(hdev, "unknown type %d conn %p", 4503 conn->type, conn); 4504 break; 4505 } 4506 } 4507 4508 queue_work(hdev->workqueue, &hdev->tx_work); 4509 } 4510 4511 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4512 struct sk_buff *skb) 4513 { 4514 struct hci_ev_mode_change *ev = data; 4515 struct hci_conn *conn; 4516 4517 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4518 4519 hci_dev_lock(hdev); 4520 4521 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4522 if (conn) { 4523 conn->mode = ev->mode; 4524 4525 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4526 &conn->flags)) { 4527 if (conn->mode == HCI_CM_ACTIVE) 4528 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4529 else 4530 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4531 } 4532 4533 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4534 hci_sco_setup(conn, ev->status); 4535 } 4536 4537 hci_dev_unlock(hdev); 4538 } 4539 4540 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4541 struct sk_buff *skb) 4542 { 4543 struct hci_ev_pin_code_req *ev = data; 4544 struct hci_conn *conn; 4545 4546 bt_dev_dbg(hdev, ""); 4547 4548 hci_dev_lock(hdev); 4549 4550 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4551 if (!conn) 4552 goto unlock; 4553 4554 if (conn->state == BT_CONNECTED) { 4555 hci_conn_hold(conn); 4556 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4557 hci_conn_drop(conn); 4558 } 4559 4560 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4561 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4562 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4563 sizeof(ev->bdaddr), &ev->bdaddr); 4564 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4565 u8 secure; 4566 4567 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4568 secure = 1; 4569 else 4570 secure = 0; 4571 4572 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4573 } 4574 4575 unlock: 4576 hci_dev_unlock(hdev); 4577 } 4578 4579 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4580 { 4581 if (key_type == HCI_LK_CHANGED_COMBINATION) 4582 return; 4583 4584 conn->pin_length = pin_len; 4585 conn->key_type = key_type; 4586 4587 switch (key_type) { 4588 case HCI_LK_LOCAL_UNIT: 4589 case HCI_LK_REMOTE_UNIT: 4590 case HCI_LK_DEBUG_COMBINATION: 4591 return; 4592 case HCI_LK_COMBINATION: 4593 if (pin_len == 16) 4594 conn->pending_sec_level = BT_SECURITY_HIGH; 4595 else 4596 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4597 break; 4598 case HCI_LK_UNAUTH_COMBINATION_P192: 4599 case HCI_LK_UNAUTH_COMBINATION_P256: 4600 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4601 break; 4602 case HCI_LK_AUTH_COMBINATION_P192: 4603 conn->pending_sec_level = BT_SECURITY_HIGH; 4604 break; 4605 case HCI_LK_AUTH_COMBINATION_P256: 4606 conn->pending_sec_level = BT_SECURITY_FIPS; 4607 break; 4608 } 4609 } 4610 4611 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4612 struct sk_buff *skb) 4613 { 4614 struct hci_ev_link_key_req *ev = data; 4615 struct hci_cp_link_key_reply cp; 4616 struct hci_conn *conn; 4617 struct link_key *key; 4618 4619 bt_dev_dbg(hdev, ""); 4620 4621 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4622 return; 4623 4624 hci_dev_lock(hdev); 4625 4626 key = hci_find_link_key(hdev, &ev->bdaddr); 4627 if (!key) { 4628 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4629 goto not_found; 4630 } 4631 4632 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4633 4634 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4635 if (conn) { 4636 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4637 4638 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4639 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4640 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4641 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4642 goto not_found; 4643 } 4644 4645 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4646 (conn->pending_sec_level == BT_SECURITY_HIGH || 4647 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4648 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4649 goto not_found; 4650 } 4651 4652 conn_set_key(conn, key->type, key->pin_len); 4653 } 4654 4655 bacpy(&cp.bdaddr, &ev->bdaddr); 4656 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4657 4658 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4659 4660 hci_dev_unlock(hdev); 4661 4662 return; 4663 4664 not_found: 4665 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4666 hci_dev_unlock(hdev); 4667 } 4668 4669 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4670 struct sk_buff *skb) 4671 { 4672 struct hci_ev_link_key_notify *ev = data; 4673 struct hci_conn *conn; 4674 struct link_key *key; 4675 bool persistent; 4676 u8 pin_len = 0; 4677 4678 bt_dev_dbg(hdev, ""); 4679 4680 hci_dev_lock(hdev); 4681 4682 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4683 if (!conn) 4684 goto unlock; 4685 4686 hci_conn_hold(conn); 4687 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4688 hci_conn_drop(conn); 4689 4690 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4691 conn_set_key(conn, ev->key_type, conn->pin_length); 4692 4693 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4694 goto unlock; 4695 4696 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4697 ev->key_type, pin_len, &persistent); 4698 if (!key) 4699 goto unlock; 4700 4701 /* Update connection information since adding the key will have 4702 * fixed up the type in the case of changed combination keys. 4703 */ 4704 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4705 conn_set_key(conn, key->type, key->pin_len); 4706 4707 mgmt_new_link_key(hdev, key, persistent); 4708 4709 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4710 * is set. If it's not set simply remove the key from the kernel 4711 * list (we've still notified user space about it but with 4712 * store_hint being 0). 4713 */ 4714 if (key->type == HCI_LK_DEBUG_COMBINATION && 4715 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4716 list_del_rcu(&key->list); 4717 kfree_rcu(key, rcu); 4718 goto unlock; 4719 } 4720 4721 if (persistent) 4722 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4723 else 4724 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4725 4726 unlock: 4727 hci_dev_unlock(hdev); 4728 } 4729 4730 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4731 struct sk_buff *skb) 4732 { 4733 struct hci_ev_clock_offset *ev = data; 4734 struct hci_conn *conn; 4735 4736 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4737 4738 hci_dev_lock(hdev); 4739 4740 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4741 if (conn && !ev->status) { 4742 struct inquiry_entry *ie; 4743 4744 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4745 if (ie) { 4746 ie->data.clock_offset = ev->clock_offset; 4747 ie->timestamp = jiffies; 4748 } 4749 } 4750 4751 hci_dev_unlock(hdev); 4752 } 4753 4754 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4755 struct sk_buff *skb) 4756 { 4757 struct hci_ev_pkt_type_change *ev = data; 4758 struct hci_conn *conn; 4759 4760 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4761 4762 hci_dev_lock(hdev); 4763 4764 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4765 if (conn && !ev->status) 4766 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4767 4768 hci_dev_unlock(hdev); 4769 } 4770 4771 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4772 struct sk_buff *skb) 4773 { 4774 struct hci_ev_pscan_rep_mode *ev = data; 4775 struct inquiry_entry *ie; 4776 4777 bt_dev_dbg(hdev, ""); 4778 4779 hci_dev_lock(hdev); 4780 4781 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4782 if (ie) { 4783 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4784 ie->timestamp = jiffies; 4785 } 4786 4787 hci_dev_unlock(hdev); 4788 } 4789 4790 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4791 struct sk_buff *skb) 4792 { 4793 struct hci_ev_inquiry_result_rssi *ev = edata; 4794 struct inquiry_data data; 4795 int i; 4796 4797 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4798 4799 if (!ev->num) 4800 return; 4801 4802 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4803 return; 4804 4805 hci_dev_lock(hdev); 4806 4807 if (skb->len == array_size(ev->num, 4808 sizeof(struct inquiry_info_rssi_pscan))) { 4809 struct inquiry_info_rssi_pscan *info; 4810 4811 for (i = 0; i < ev->num; i++) { 4812 u32 flags; 4813 4814 info = hci_ev_skb_pull(hdev, skb, 4815 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4816 sizeof(*info)); 4817 if (!info) { 4818 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4819 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4820 goto unlock; 4821 } 4822 4823 bacpy(&data.bdaddr, &info->bdaddr); 4824 data.pscan_rep_mode = info->pscan_rep_mode; 4825 data.pscan_period_mode = info->pscan_period_mode; 4826 data.pscan_mode = info->pscan_mode; 4827 memcpy(data.dev_class, info->dev_class, 3); 4828 data.clock_offset = info->clock_offset; 4829 data.rssi = info->rssi; 4830 data.ssp_mode = 0x00; 4831 4832 flags = hci_inquiry_cache_update(hdev, &data, false); 4833 4834 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4835 info->dev_class, info->rssi, 4836 flags, NULL, 0, NULL, 0, 0); 4837 } 4838 } else if (skb->len == array_size(ev->num, 4839 sizeof(struct inquiry_info_rssi))) { 4840 struct inquiry_info_rssi *info; 4841 4842 for (i = 0; i < ev->num; i++) { 4843 u32 flags; 4844 4845 info = hci_ev_skb_pull(hdev, skb, 4846 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4847 sizeof(*info)); 4848 if (!info) { 4849 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4850 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4851 goto unlock; 4852 } 4853 4854 bacpy(&data.bdaddr, &info->bdaddr); 4855 data.pscan_rep_mode = info->pscan_rep_mode; 4856 data.pscan_period_mode = info->pscan_period_mode; 4857 data.pscan_mode = 0x00; 4858 memcpy(data.dev_class, info->dev_class, 3); 4859 data.clock_offset = info->clock_offset; 4860 data.rssi = info->rssi; 4861 data.ssp_mode = 0x00; 4862 4863 flags = hci_inquiry_cache_update(hdev, &data, false); 4864 4865 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4866 info->dev_class, info->rssi, 4867 flags, NULL, 0, NULL, 0, 0); 4868 } 4869 } else { 4870 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4871 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4872 } 4873 unlock: 4874 hci_dev_unlock(hdev); 4875 } 4876 4877 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4878 struct sk_buff *skb) 4879 { 4880 struct hci_ev_remote_ext_features *ev = data; 4881 struct hci_conn *conn; 4882 4883 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4884 4885 hci_dev_lock(hdev); 4886 4887 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4888 if (!conn) 4889 goto unlock; 4890 4891 if (ev->page < HCI_MAX_PAGES) 4892 memcpy(conn->features[ev->page], ev->features, 8); 4893 4894 if (!ev->status && ev->page == 0x01) { 4895 struct inquiry_entry *ie; 4896 4897 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4898 if (ie) 4899 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4900 4901 if (ev->features[0] & LMP_HOST_SSP) { 4902 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4903 } else { 4904 /* It is mandatory by the Bluetooth specification that 4905 * Extended Inquiry Results are only used when Secure 4906 * Simple Pairing is enabled, but some devices violate 4907 * this. 4908 * 4909 * To make these devices work, the internal SSP 4910 * enabled flag needs to be cleared if the remote host 4911 * features do not indicate SSP support */ 4912 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4913 } 4914 4915 if (ev->features[0] & LMP_HOST_SC) 4916 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4917 } 4918 4919 if (conn->state != BT_CONFIG) 4920 goto unlock; 4921 4922 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4923 struct hci_cp_remote_name_req cp; 4924 memset(&cp, 0, sizeof(cp)); 4925 bacpy(&cp.bdaddr, &conn->dst); 4926 cp.pscan_rep_mode = 0x02; 4927 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4928 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 4929 mgmt_device_connected(hdev, conn, NULL, 0); 4930 4931 if (!hci_outgoing_auth_needed(hdev, conn)) { 4932 conn->state = BT_CONNECTED; 4933 hci_connect_cfm(conn, ev->status); 4934 hci_conn_drop(conn); 4935 } 4936 4937 unlock: 4938 hci_dev_unlock(hdev); 4939 } 4940 4941 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4942 struct sk_buff *skb) 4943 { 4944 struct hci_ev_sync_conn_complete *ev = data; 4945 struct hci_conn *conn; 4946 u8 status = ev->status; 4947 4948 switch (ev->link_type) { 4949 case SCO_LINK: 4950 case ESCO_LINK: 4951 break; 4952 default: 4953 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4954 * for HCI_Synchronous_Connection_Complete is limited to 4955 * either SCO or eSCO 4956 */ 4957 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4958 return; 4959 } 4960 4961 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4962 4963 hci_dev_lock(hdev); 4964 4965 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4966 if (!conn) { 4967 if (ev->link_type == ESCO_LINK) 4968 goto unlock; 4969 4970 /* When the link type in the event indicates SCO connection 4971 * and lookup of the connection object fails, then check 4972 * if an eSCO connection object exists. 4973 * 4974 * The core limits the synchronous connections to either 4975 * SCO or eSCO. The eSCO connection is preferred and tried 4976 * to be setup first and until successfully established, 4977 * the link type will be hinted as eSCO. 4978 */ 4979 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4980 if (!conn) 4981 goto unlock; 4982 } 4983 4984 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4985 * Processing it more than once per connection can corrupt kernel memory. 4986 * 4987 * As the connection handle is set here for the first time, it indicates 4988 * whether the connection is already set up. 4989 */ 4990 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 4991 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 4992 goto unlock; 4993 } 4994 4995 switch (status) { 4996 case 0x00: 4997 conn->handle = __le16_to_cpu(ev->handle); 4998 if (conn->handle > HCI_CONN_HANDLE_MAX) { 4999 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", 5000 conn->handle, HCI_CONN_HANDLE_MAX); 5001 status = HCI_ERROR_INVALID_PARAMETERS; 5002 conn->state = BT_CLOSED; 5003 break; 5004 } 5005 5006 conn->state = BT_CONNECTED; 5007 conn->type = ev->link_type; 5008 5009 hci_debugfs_create_conn(conn); 5010 hci_conn_add_sysfs(conn); 5011 break; 5012 5013 case 0x10: /* Connection Accept Timeout */ 5014 case 0x0d: /* Connection Rejected due to Limited Resources */ 5015 case 0x11: /* Unsupported Feature or Parameter Value */ 5016 case 0x1c: /* SCO interval rejected */ 5017 case 0x1a: /* Unsupported Remote Feature */ 5018 case 0x1e: /* Invalid LMP Parameters */ 5019 case 0x1f: /* Unspecified error */ 5020 case 0x20: /* Unsupported LMP Parameter value */ 5021 if (conn->out) { 5022 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 5023 (hdev->esco_type & EDR_ESCO_MASK); 5024 if (hci_setup_sync(conn, conn->parent->handle)) 5025 goto unlock; 5026 } 5027 fallthrough; 5028 5029 default: 5030 conn->state = BT_CLOSED; 5031 break; 5032 } 5033 5034 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5035 /* Notify only in case of SCO over HCI transport data path which 5036 * is zero and non-zero value shall be non-HCI transport data path 5037 */ 5038 if (conn->codec.data_path == 0 && hdev->notify) { 5039 switch (ev->air_mode) { 5040 case 0x02: 5041 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5042 break; 5043 case 0x03: 5044 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5045 break; 5046 } 5047 } 5048 5049 hci_connect_cfm(conn, status); 5050 if (status) 5051 hci_conn_del(conn); 5052 5053 unlock: 5054 hci_dev_unlock(hdev); 5055 } 5056 5057 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5058 { 5059 size_t parsed = 0; 5060 5061 while (parsed < eir_len) { 5062 u8 field_len = eir[0]; 5063 5064 if (field_len == 0) 5065 return parsed; 5066 5067 parsed += field_len + 1; 5068 eir += field_len + 1; 5069 } 5070 5071 return eir_len; 5072 } 5073 5074 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5075 struct sk_buff *skb) 5076 { 5077 struct hci_ev_ext_inquiry_result *ev = edata; 5078 struct inquiry_data data; 5079 size_t eir_len; 5080 int i; 5081 5082 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5083 flex_array_size(ev, info, ev->num))) 5084 return; 5085 5086 bt_dev_dbg(hdev, "num %d", ev->num); 5087 5088 if (!ev->num) 5089 return; 5090 5091 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5092 return; 5093 5094 hci_dev_lock(hdev); 5095 5096 for (i = 0; i < ev->num; i++) { 5097 struct extended_inquiry_info *info = &ev->info[i]; 5098 u32 flags; 5099 bool name_known; 5100 5101 bacpy(&data.bdaddr, &info->bdaddr); 5102 data.pscan_rep_mode = info->pscan_rep_mode; 5103 data.pscan_period_mode = info->pscan_period_mode; 5104 data.pscan_mode = 0x00; 5105 memcpy(data.dev_class, info->dev_class, 3); 5106 data.clock_offset = info->clock_offset; 5107 data.rssi = info->rssi; 5108 data.ssp_mode = 0x01; 5109 5110 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5111 name_known = eir_get_data(info->data, 5112 sizeof(info->data), 5113 EIR_NAME_COMPLETE, NULL); 5114 else 5115 name_known = true; 5116 5117 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5118 5119 eir_len = eir_get_length(info->data, sizeof(info->data)); 5120 5121 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5122 info->dev_class, info->rssi, 5123 flags, info->data, eir_len, NULL, 0, 0); 5124 } 5125 5126 hci_dev_unlock(hdev); 5127 } 5128 5129 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5130 struct sk_buff *skb) 5131 { 5132 struct hci_ev_key_refresh_complete *ev = data; 5133 struct hci_conn *conn; 5134 5135 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5136 __le16_to_cpu(ev->handle)); 5137 5138 hci_dev_lock(hdev); 5139 5140 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5141 if (!conn) 5142 goto unlock; 5143 5144 /* For BR/EDR the necessary steps are taken through the 5145 * auth_complete event. 5146 */ 5147 if (conn->type != LE_LINK) 5148 goto unlock; 5149 5150 if (!ev->status) 5151 conn->sec_level = conn->pending_sec_level; 5152 5153 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5154 5155 if (ev->status && conn->state == BT_CONNECTED) { 5156 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5157 hci_conn_drop(conn); 5158 goto unlock; 5159 } 5160 5161 if (conn->state == BT_CONFIG) { 5162 if (!ev->status) 5163 conn->state = BT_CONNECTED; 5164 5165 hci_connect_cfm(conn, ev->status); 5166 hci_conn_drop(conn); 5167 } else { 5168 hci_auth_cfm(conn, ev->status); 5169 5170 hci_conn_hold(conn); 5171 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5172 hci_conn_drop(conn); 5173 } 5174 5175 unlock: 5176 hci_dev_unlock(hdev); 5177 } 5178 5179 static u8 hci_get_auth_req(struct hci_conn *conn) 5180 { 5181 /* If remote requests no-bonding follow that lead */ 5182 if (conn->remote_auth == HCI_AT_NO_BONDING || 5183 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5184 return conn->remote_auth | (conn->auth_type & 0x01); 5185 5186 /* If both remote and local have enough IO capabilities, require 5187 * MITM protection 5188 */ 5189 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5190 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5191 return conn->remote_auth | 0x01; 5192 5193 /* No MITM protection possible so ignore remote requirement */ 5194 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5195 } 5196 5197 static u8 bredr_oob_data_present(struct hci_conn *conn) 5198 { 5199 struct hci_dev *hdev = conn->hdev; 5200 struct oob_data *data; 5201 5202 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5203 if (!data) 5204 return 0x00; 5205 5206 if (bredr_sc_enabled(hdev)) { 5207 /* When Secure Connections is enabled, then just 5208 * return the present value stored with the OOB 5209 * data. The stored value contains the right present 5210 * information. However it can only be trusted when 5211 * not in Secure Connection Only mode. 5212 */ 5213 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5214 return data->present; 5215 5216 /* When Secure Connections Only mode is enabled, then 5217 * the P-256 values are required. If they are not 5218 * available, then do not declare that OOB data is 5219 * present. 5220 */ 5221 if (!memcmp(data->rand256, ZERO_KEY, 16) || 5222 !memcmp(data->hash256, ZERO_KEY, 16)) 5223 return 0x00; 5224 5225 return 0x02; 5226 } 5227 5228 /* When Secure Connections is not enabled or actually 5229 * not supported by the hardware, then check that if 5230 * P-192 data values are present. 5231 */ 5232 if (!memcmp(data->rand192, ZERO_KEY, 16) || 5233 !memcmp(data->hash192, ZERO_KEY, 16)) 5234 return 0x00; 5235 5236 return 0x01; 5237 } 5238 5239 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5240 struct sk_buff *skb) 5241 { 5242 struct hci_ev_io_capa_request *ev = data; 5243 struct hci_conn *conn; 5244 5245 bt_dev_dbg(hdev, ""); 5246 5247 hci_dev_lock(hdev); 5248 5249 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5250 if (!conn) 5251 goto unlock; 5252 5253 hci_conn_hold(conn); 5254 5255 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5256 goto unlock; 5257 5258 /* Allow pairing if we're pairable, the initiators of the 5259 * pairing or if the remote is not requesting bonding. 5260 */ 5261 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5262 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5263 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5264 struct hci_cp_io_capability_reply cp; 5265 5266 bacpy(&cp.bdaddr, &ev->bdaddr); 5267 /* Change the IO capability from KeyboardDisplay 5268 * to DisplayYesNo as it is not supported by BT spec. */ 5269 cp.capability = (conn->io_capability == 0x04) ? 5270 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5271 5272 /* If we are initiators, there is no remote information yet */ 5273 if (conn->remote_auth == 0xff) { 5274 /* Request MITM protection if our IO caps allow it 5275 * except for the no-bonding case. 5276 */ 5277 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5278 conn->auth_type != HCI_AT_NO_BONDING) 5279 conn->auth_type |= 0x01; 5280 } else { 5281 conn->auth_type = hci_get_auth_req(conn); 5282 } 5283 5284 /* If we're not bondable, force one of the non-bondable 5285 * authentication requirement values. 5286 */ 5287 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5288 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5289 5290 cp.authentication = conn->auth_type; 5291 cp.oob_data = bredr_oob_data_present(conn); 5292 5293 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5294 sizeof(cp), &cp); 5295 } else { 5296 struct hci_cp_io_capability_neg_reply cp; 5297 5298 bacpy(&cp.bdaddr, &ev->bdaddr); 5299 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5300 5301 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5302 sizeof(cp), &cp); 5303 } 5304 5305 unlock: 5306 hci_dev_unlock(hdev); 5307 } 5308 5309 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5310 struct sk_buff *skb) 5311 { 5312 struct hci_ev_io_capa_reply *ev = data; 5313 struct hci_conn *conn; 5314 5315 bt_dev_dbg(hdev, ""); 5316 5317 hci_dev_lock(hdev); 5318 5319 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5320 if (!conn) 5321 goto unlock; 5322 5323 conn->remote_cap = ev->capability; 5324 conn->remote_auth = ev->authentication; 5325 5326 unlock: 5327 hci_dev_unlock(hdev); 5328 } 5329 5330 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5331 struct sk_buff *skb) 5332 { 5333 struct hci_ev_user_confirm_req *ev = data; 5334 int loc_mitm, rem_mitm, confirm_hint = 0; 5335 struct hci_conn *conn; 5336 5337 bt_dev_dbg(hdev, ""); 5338 5339 hci_dev_lock(hdev); 5340 5341 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5342 goto unlock; 5343 5344 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5345 if (!conn) 5346 goto unlock; 5347 5348 loc_mitm = (conn->auth_type & 0x01); 5349 rem_mitm = (conn->remote_auth & 0x01); 5350 5351 /* If we require MITM but the remote device can't provide that 5352 * (it has NoInputNoOutput) then reject the confirmation 5353 * request. We check the security level here since it doesn't 5354 * necessarily match conn->auth_type. 5355 */ 5356 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5357 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5358 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5359 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5360 sizeof(ev->bdaddr), &ev->bdaddr); 5361 goto unlock; 5362 } 5363 5364 /* If no side requires MITM protection; auto-accept */ 5365 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5366 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5367 5368 /* If we're not the initiators request authorization to 5369 * proceed from user space (mgmt_user_confirm with 5370 * confirm_hint set to 1). The exception is if neither 5371 * side had MITM or if the local IO capability is 5372 * NoInputNoOutput, in which case we do auto-accept 5373 */ 5374 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5375 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5376 (loc_mitm || rem_mitm)) { 5377 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5378 confirm_hint = 1; 5379 goto confirm; 5380 } 5381 5382 /* If there already exists link key in local host, leave the 5383 * decision to user space since the remote device could be 5384 * legitimate or malicious. 5385 */ 5386 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5387 bt_dev_dbg(hdev, "Local host already has link key"); 5388 confirm_hint = 1; 5389 goto confirm; 5390 } 5391 5392 BT_DBG("Auto-accept of user confirmation with %ums delay", 5393 hdev->auto_accept_delay); 5394 5395 if (hdev->auto_accept_delay > 0) { 5396 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5397 queue_delayed_work(conn->hdev->workqueue, 5398 &conn->auto_accept_work, delay); 5399 goto unlock; 5400 } 5401 5402 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5403 sizeof(ev->bdaddr), &ev->bdaddr); 5404 goto unlock; 5405 } 5406 5407 confirm: 5408 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5409 le32_to_cpu(ev->passkey), confirm_hint); 5410 5411 unlock: 5412 hci_dev_unlock(hdev); 5413 } 5414 5415 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5416 struct sk_buff *skb) 5417 { 5418 struct hci_ev_user_passkey_req *ev = data; 5419 5420 bt_dev_dbg(hdev, ""); 5421 5422 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5423 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5424 } 5425 5426 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5427 struct sk_buff *skb) 5428 { 5429 struct hci_ev_user_passkey_notify *ev = data; 5430 struct hci_conn *conn; 5431 5432 bt_dev_dbg(hdev, ""); 5433 5434 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5435 if (!conn) 5436 return; 5437 5438 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5439 conn->passkey_entered = 0; 5440 5441 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5442 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5443 conn->dst_type, conn->passkey_notify, 5444 conn->passkey_entered); 5445 } 5446 5447 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5448 struct sk_buff *skb) 5449 { 5450 struct hci_ev_keypress_notify *ev = data; 5451 struct hci_conn *conn; 5452 5453 bt_dev_dbg(hdev, ""); 5454 5455 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5456 if (!conn) 5457 return; 5458 5459 switch (ev->type) { 5460 case HCI_KEYPRESS_STARTED: 5461 conn->passkey_entered = 0; 5462 return; 5463 5464 case HCI_KEYPRESS_ENTERED: 5465 conn->passkey_entered++; 5466 break; 5467 5468 case HCI_KEYPRESS_ERASED: 5469 conn->passkey_entered--; 5470 break; 5471 5472 case HCI_KEYPRESS_CLEARED: 5473 conn->passkey_entered = 0; 5474 break; 5475 5476 case HCI_KEYPRESS_COMPLETED: 5477 return; 5478 } 5479 5480 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5481 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5482 conn->dst_type, conn->passkey_notify, 5483 conn->passkey_entered); 5484 } 5485 5486 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5487 struct sk_buff *skb) 5488 { 5489 struct hci_ev_simple_pair_complete *ev = data; 5490 struct hci_conn *conn; 5491 5492 bt_dev_dbg(hdev, ""); 5493 5494 hci_dev_lock(hdev); 5495 5496 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5497 if (!conn) 5498 goto unlock; 5499 5500 /* Reset the authentication requirement to unknown */ 5501 conn->remote_auth = 0xff; 5502 5503 /* To avoid duplicate auth_failed events to user space we check 5504 * the HCI_CONN_AUTH_PEND flag which will be set if we 5505 * initiated the authentication. A traditional auth_complete 5506 * event gets always produced as initiator and is also mapped to 5507 * the mgmt_auth_failed event */ 5508 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5509 mgmt_auth_failed(conn, ev->status); 5510 5511 hci_conn_drop(conn); 5512 5513 unlock: 5514 hci_dev_unlock(hdev); 5515 } 5516 5517 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5518 struct sk_buff *skb) 5519 { 5520 struct hci_ev_remote_host_features *ev = data; 5521 struct inquiry_entry *ie; 5522 struct hci_conn *conn; 5523 5524 bt_dev_dbg(hdev, ""); 5525 5526 hci_dev_lock(hdev); 5527 5528 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5529 if (conn) 5530 memcpy(conn->features[1], ev->features, 8); 5531 5532 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5533 if (ie) 5534 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5535 5536 hci_dev_unlock(hdev); 5537 } 5538 5539 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5540 struct sk_buff *skb) 5541 { 5542 struct hci_ev_remote_oob_data_request *ev = edata; 5543 struct oob_data *data; 5544 5545 bt_dev_dbg(hdev, ""); 5546 5547 hci_dev_lock(hdev); 5548 5549 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5550 goto unlock; 5551 5552 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5553 if (!data) { 5554 struct hci_cp_remote_oob_data_neg_reply cp; 5555 5556 bacpy(&cp.bdaddr, &ev->bdaddr); 5557 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5558 sizeof(cp), &cp); 5559 goto unlock; 5560 } 5561 5562 if (bredr_sc_enabled(hdev)) { 5563 struct hci_cp_remote_oob_ext_data_reply cp; 5564 5565 bacpy(&cp.bdaddr, &ev->bdaddr); 5566 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5567 memset(cp.hash192, 0, sizeof(cp.hash192)); 5568 memset(cp.rand192, 0, sizeof(cp.rand192)); 5569 } else { 5570 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5571 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5572 } 5573 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5574 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5575 5576 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5577 sizeof(cp), &cp); 5578 } else { 5579 struct hci_cp_remote_oob_data_reply cp; 5580 5581 bacpy(&cp.bdaddr, &ev->bdaddr); 5582 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5583 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5584 5585 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5586 sizeof(cp), &cp); 5587 } 5588 5589 unlock: 5590 hci_dev_unlock(hdev); 5591 } 5592 5593 #if IS_ENABLED(CONFIG_BT_HS) 5594 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data, 5595 struct sk_buff *skb) 5596 { 5597 struct hci_ev_channel_selected *ev = data; 5598 struct hci_conn *hcon; 5599 5600 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle); 5601 5602 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5603 if (!hcon) 5604 return; 5605 5606 amp_read_loc_assoc_final_data(hdev, hcon); 5607 } 5608 5609 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data, 5610 struct sk_buff *skb) 5611 { 5612 struct hci_ev_phy_link_complete *ev = data; 5613 struct hci_conn *hcon, *bredr_hcon; 5614 5615 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle, 5616 ev->status); 5617 5618 hci_dev_lock(hdev); 5619 5620 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5621 if (!hcon) 5622 goto unlock; 5623 5624 if (!hcon->amp_mgr) 5625 goto unlock; 5626 5627 if (ev->status) { 5628 hci_conn_del(hcon); 5629 goto unlock; 5630 } 5631 5632 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon; 5633 5634 hcon->state = BT_CONNECTED; 5635 bacpy(&hcon->dst, &bredr_hcon->dst); 5636 5637 hci_conn_hold(hcon); 5638 hcon->disc_timeout = HCI_DISCONN_TIMEOUT; 5639 hci_conn_drop(hcon); 5640 5641 hci_debugfs_create_conn(hcon); 5642 hci_conn_add_sysfs(hcon); 5643 5644 amp_physical_cfm(bredr_hcon, hcon); 5645 5646 unlock: 5647 hci_dev_unlock(hdev); 5648 } 5649 5650 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data, 5651 struct sk_buff *skb) 5652 { 5653 struct hci_ev_logical_link_complete *ev = data; 5654 struct hci_conn *hcon; 5655 struct hci_chan *hchan; 5656 struct amp_mgr *mgr; 5657 5658 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x", 5659 le16_to_cpu(ev->handle), ev->phy_handle, ev->status); 5660 5661 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5662 if (!hcon) 5663 return; 5664 5665 /* Create AMP hchan */ 5666 hchan = hci_chan_create(hcon); 5667 if (!hchan) 5668 return; 5669 5670 hchan->handle = le16_to_cpu(ev->handle); 5671 hchan->amp = true; 5672 5673 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan); 5674 5675 mgr = hcon->amp_mgr; 5676 if (mgr && mgr->bredr_chan) { 5677 struct l2cap_chan *bredr_chan = mgr->bredr_chan; 5678 5679 l2cap_chan_lock(bredr_chan); 5680 5681 bredr_chan->conn->mtu = hdev->block_mtu; 5682 l2cap_logical_cfm(bredr_chan, hchan, 0); 5683 hci_conn_hold(hcon); 5684 5685 l2cap_chan_unlock(bredr_chan); 5686 } 5687 } 5688 5689 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data, 5690 struct sk_buff *skb) 5691 { 5692 struct hci_ev_disconn_logical_link_complete *ev = data; 5693 struct hci_chan *hchan; 5694 5695 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", 5696 le16_to_cpu(ev->handle), ev->status); 5697 5698 if (ev->status) 5699 return; 5700 5701 hci_dev_lock(hdev); 5702 5703 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle)); 5704 if (!hchan || !hchan->amp) 5705 goto unlock; 5706 5707 amp_destroy_logical_link(hchan, ev->reason); 5708 5709 unlock: 5710 hci_dev_unlock(hdev); 5711 } 5712 5713 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data, 5714 struct sk_buff *skb) 5715 { 5716 struct hci_ev_disconn_phy_link_complete *ev = data; 5717 struct hci_conn *hcon; 5718 5719 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5720 5721 if (ev->status) 5722 return; 5723 5724 hci_dev_lock(hdev); 5725 5726 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5727 if (hcon && hcon->type == AMP_LINK) { 5728 hcon->state = BT_CLOSED; 5729 hci_disconn_cfm(hcon, ev->reason); 5730 hci_conn_del(hcon); 5731 } 5732 5733 hci_dev_unlock(hdev); 5734 } 5735 #endif 5736 5737 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5738 u8 bdaddr_type, bdaddr_t *local_rpa) 5739 { 5740 if (conn->out) { 5741 conn->dst_type = bdaddr_type; 5742 conn->resp_addr_type = bdaddr_type; 5743 bacpy(&conn->resp_addr, bdaddr); 5744 5745 /* Check if the controller has set a Local RPA then it must be 5746 * used instead or hdev->rpa. 5747 */ 5748 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5749 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5750 bacpy(&conn->init_addr, local_rpa); 5751 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5752 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5753 bacpy(&conn->init_addr, &conn->hdev->rpa); 5754 } else { 5755 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5756 &conn->init_addr_type); 5757 } 5758 } else { 5759 conn->resp_addr_type = conn->hdev->adv_addr_type; 5760 /* Check if the controller has set a Local RPA then it must be 5761 * used instead or hdev->rpa. 5762 */ 5763 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5764 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5765 bacpy(&conn->resp_addr, local_rpa); 5766 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5767 /* In case of ext adv, resp_addr will be updated in 5768 * Adv Terminated event. 5769 */ 5770 if (!ext_adv_capable(conn->hdev)) 5771 bacpy(&conn->resp_addr, 5772 &conn->hdev->random_addr); 5773 } else { 5774 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5775 } 5776 5777 conn->init_addr_type = bdaddr_type; 5778 bacpy(&conn->init_addr, bdaddr); 5779 5780 /* For incoming connections, set the default minimum 5781 * and maximum connection interval. They will be used 5782 * to check if the parameters are in range and if not 5783 * trigger the connection update procedure. 5784 */ 5785 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5786 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5787 } 5788 } 5789 5790 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5791 bdaddr_t *bdaddr, u8 bdaddr_type, 5792 bdaddr_t *local_rpa, u8 role, u16 handle, 5793 u16 interval, u16 latency, 5794 u16 supervision_timeout) 5795 { 5796 struct hci_conn_params *params; 5797 struct hci_conn *conn; 5798 struct smp_irk *irk; 5799 u8 addr_type; 5800 5801 hci_dev_lock(hdev); 5802 5803 /* All controllers implicitly stop advertising in the event of a 5804 * connection, so ensure that the state bit is cleared. 5805 */ 5806 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5807 5808 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5809 if (!conn) { 5810 /* In case of error status and there is no connection pending 5811 * just unlock as there is nothing to cleanup. 5812 */ 5813 if (status) 5814 goto unlock; 5815 5816 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role); 5817 if (!conn) { 5818 bt_dev_err(hdev, "no memory for new connection"); 5819 goto unlock; 5820 } 5821 5822 conn->dst_type = bdaddr_type; 5823 5824 /* If we didn't have a hci_conn object previously 5825 * but we're in central role this must be something 5826 * initiated using an accept list. Since accept list based 5827 * connections are not "first class citizens" we don't 5828 * have full tracking of them. Therefore, we go ahead 5829 * with a "best effort" approach of determining the 5830 * initiator address based on the HCI_PRIVACY flag. 5831 */ 5832 if (conn->out) { 5833 conn->resp_addr_type = bdaddr_type; 5834 bacpy(&conn->resp_addr, bdaddr); 5835 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5836 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5837 bacpy(&conn->init_addr, &hdev->rpa); 5838 } else { 5839 hci_copy_identity_address(hdev, 5840 &conn->init_addr, 5841 &conn->init_addr_type); 5842 } 5843 } 5844 } else { 5845 cancel_delayed_work(&conn->le_conn_timeout); 5846 } 5847 5848 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5849 * Processing it more than once per connection can corrupt kernel memory. 5850 * 5851 * As the connection handle is set here for the first time, it indicates 5852 * whether the connection is already set up. 5853 */ 5854 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 5855 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5856 goto unlock; 5857 } 5858 5859 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5860 5861 /* Lookup the identity address from the stored connection 5862 * address and address type. 5863 * 5864 * When establishing connections to an identity address, the 5865 * connection procedure will store the resolvable random 5866 * address first. Now if it can be converted back into the 5867 * identity address, start using the identity address from 5868 * now on. 5869 */ 5870 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5871 if (irk) { 5872 bacpy(&conn->dst, &irk->bdaddr); 5873 conn->dst_type = irk->addr_type; 5874 } 5875 5876 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5877 5878 if (handle > HCI_CONN_HANDLE_MAX) { 5879 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle, 5880 HCI_CONN_HANDLE_MAX); 5881 status = HCI_ERROR_INVALID_PARAMETERS; 5882 } 5883 5884 /* All connection failure handling is taken care of by the 5885 * hci_conn_failed function which is triggered by the HCI 5886 * request completion callbacks used for connecting. 5887 */ 5888 if (status) 5889 goto unlock; 5890 5891 /* Drop the connection if it has been aborted */ 5892 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5893 hci_conn_drop(conn); 5894 goto unlock; 5895 } 5896 5897 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5898 addr_type = BDADDR_LE_PUBLIC; 5899 else 5900 addr_type = BDADDR_LE_RANDOM; 5901 5902 /* Drop the connection if the device is blocked */ 5903 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5904 hci_conn_drop(conn); 5905 goto unlock; 5906 } 5907 5908 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 5909 mgmt_device_connected(hdev, conn, NULL, 0); 5910 5911 conn->sec_level = BT_SECURITY_LOW; 5912 conn->handle = handle; 5913 conn->state = BT_CONFIG; 5914 5915 /* Store current advertising instance as connection advertising instance 5916 * when sotfware rotation is in use so it can be re-enabled when 5917 * disconnected. 5918 */ 5919 if (!ext_adv_capable(hdev)) 5920 conn->adv_instance = hdev->cur_adv_instance; 5921 5922 conn->le_conn_interval = interval; 5923 conn->le_conn_latency = latency; 5924 conn->le_supv_timeout = supervision_timeout; 5925 5926 hci_debugfs_create_conn(conn); 5927 hci_conn_add_sysfs(conn); 5928 5929 /* The remote features procedure is defined for central 5930 * role only. So only in case of an initiated connection 5931 * request the remote features. 5932 * 5933 * If the local controller supports peripheral-initiated features 5934 * exchange, then requesting the remote features in peripheral 5935 * role is possible. Otherwise just transition into the 5936 * connected state without requesting the remote features. 5937 */ 5938 if (conn->out || 5939 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5940 struct hci_cp_le_read_remote_features cp; 5941 5942 cp.handle = __cpu_to_le16(conn->handle); 5943 5944 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5945 sizeof(cp), &cp); 5946 5947 hci_conn_hold(conn); 5948 } else { 5949 conn->state = BT_CONNECTED; 5950 hci_connect_cfm(conn, status); 5951 } 5952 5953 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5954 conn->dst_type); 5955 if (params) { 5956 list_del_init(¶ms->action); 5957 if (params->conn) { 5958 hci_conn_drop(params->conn); 5959 hci_conn_put(params->conn); 5960 params->conn = NULL; 5961 } 5962 } 5963 5964 unlock: 5965 hci_update_passive_scan(hdev); 5966 hci_dev_unlock(hdev); 5967 } 5968 5969 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5970 struct sk_buff *skb) 5971 { 5972 struct hci_ev_le_conn_complete *ev = data; 5973 5974 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5975 5976 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5977 NULL, ev->role, le16_to_cpu(ev->handle), 5978 le16_to_cpu(ev->interval), 5979 le16_to_cpu(ev->latency), 5980 le16_to_cpu(ev->supervision_timeout)); 5981 } 5982 5983 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5984 struct sk_buff *skb) 5985 { 5986 struct hci_ev_le_enh_conn_complete *ev = data; 5987 5988 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5989 5990 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5991 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 5992 le16_to_cpu(ev->interval), 5993 le16_to_cpu(ev->latency), 5994 le16_to_cpu(ev->supervision_timeout)); 5995 } 5996 5997 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 5998 struct sk_buff *skb) 5999 { 6000 struct hci_evt_le_ext_adv_set_term *ev = data; 6001 struct hci_conn *conn; 6002 struct adv_info *adv, *n; 6003 6004 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6005 6006 /* The Bluetooth Core 5.3 specification clearly states that this event 6007 * shall not be sent when the Host disables the advertising set. So in 6008 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 6009 * 6010 * When the Host disables an advertising set, all cleanup is done via 6011 * its command callback and not needed to be duplicated here. 6012 */ 6013 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 6014 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 6015 return; 6016 } 6017 6018 hci_dev_lock(hdev); 6019 6020 adv = hci_find_adv_instance(hdev, ev->handle); 6021 6022 if (ev->status) { 6023 if (!adv) 6024 goto unlock; 6025 6026 /* Remove advertising as it has been terminated */ 6027 hci_remove_adv_instance(hdev, ev->handle); 6028 mgmt_advertising_removed(NULL, hdev, ev->handle); 6029 6030 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 6031 if (adv->enabled) 6032 goto unlock; 6033 } 6034 6035 /* We are no longer advertising, clear HCI_LE_ADV */ 6036 hci_dev_clear_flag(hdev, HCI_LE_ADV); 6037 goto unlock; 6038 } 6039 6040 if (adv) 6041 adv->enabled = false; 6042 6043 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 6044 if (conn) { 6045 /* Store handle in the connection so the correct advertising 6046 * instance can be re-enabled when disconnected. 6047 */ 6048 conn->adv_instance = ev->handle; 6049 6050 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 6051 bacmp(&conn->resp_addr, BDADDR_ANY)) 6052 goto unlock; 6053 6054 if (!ev->handle) { 6055 bacpy(&conn->resp_addr, &hdev->random_addr); 6056 goto unlock; 6057 } 6058 6059 if (adv) 6060 bacpy(&conn->resp_addr, &adv->random_addr); 6061 } 6062 6063 unlock: 6064 hci_dev_unlock(hdev); 6065 } 6066 6067 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 6068 struct sk_buff *skb) 6069 { 6070 struct hci_ev_le_conn_update_complete *ev = data; 6071 struct hci_conn *conn; 6072 6073 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6074 6075 if (ev->status) 6076 return; 6077 6078 hci_dev_lock(hdev); 6079 6080 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6081 if (conn) { 6082 conn->le_conn_interval = le16_to_cpu(ev->interval); 6083 conn->le_conn_latency = le16_to_cpu(ev->latency); 6084 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 6085 } 6086 6087 hci_dev_unlock(hdev); 6088 } 6089 6090 /* This function requires the caller holds hdev->lock */ 6091 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 6092 bdaddr_t *addr, 6093 u8 addr_type, bool addr_resolved, 6094 u8 adv_type) 6095 { 6096 struct hci_conn *conn; 6097 struct hci_conn_params *params; 6098 6099 /* If the event is not connectable don't proceed further */ 6100 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 6101 return NULL; 6102 6103 /* Ignore if the device is blocked or hdev is suspended */ 6104 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 6105 hdev->suspended) 6106 return NULL; 6107 6108 /* Most controller will fail if we try to create new connections 6109 * while we have an existing one in peripheral role. 6110 */ 6111 if (hdev->conn_hash.le_num_peripheral > 0 && 6112 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || 6113 !(hdev->le_states[3] & 0x10))) 6114 return NULL; 6115 6116 /* If we're not connectable only connect devices that we have in 6117 * our pend_le_conns list. 6118 */ 6119 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 6120 addr_type); 6121 if (!params) 6122 return NULL; 6123 6124 if (!params->explicit_connect) { 6125 switch (params->auto_connect) { 6126 case HCI_AUTO_CONN_DIRECT: 6127 /* Only devices advertising with ADV_DIRECT_IND are 6128 * triggering a connection attempt. This is allowing 6129 * incoming connections from peripheral devices. 6130 */ 6131 if (adv_type != LE_ADV_DIRECT_IND) 6132 return NULL; 6133 break; 6134 case HCI_AUTO_CONN_ALWAYS: 6135 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 6136 * are triggering a connection attempt. This means 6137 * that incoming connections from peripheral device are 6138 * accepted and also outgoing connections to peripheral 6139 * devices are established when found. 6140 */ 6141 break; 6142 default: 6143 return NULL; 6144 } 6145 } 6146 6147 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 6148 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 6149 HCI_ROLE_MASTER); 6150 if (!IS_ERR(conn)) { 6151 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 6152 * by higher layer that tried to connect, if no then 6153 * store the pointer since we don't really have any 6154 * other owner of the object besides the params that 6155 * triggered it. This way we can abort the connection if 6156 * the parameters get removed and keep the reference 6157 * count consistent once the connection is established. 6158 */ 6159 6160 if (!params->explicit_connect) 6161 params->conn = hci_conn_get(conn); 6162 6163 return conn; 6164 } 6165 6166 switch (PTR_ERR(conn)) { 6167 case -EBUSY: 6168 /* If hci_connect() returns -EBUSY it means there is already 6169 * an LE connection attempt going on. Since controllers don't 6170 * support more than one connection attempt at the time, we 6171 * don't consider this an error case. 6172 */ 6173 break; 6174 default: 6175 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 6176 return NULL; 6177 } 6178 6179 return NULL; 6180 } 6181 6182 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6183 u8 bdaddr_type, bdaddr_t *direct_addr, 6184 u8 direct_addr_type, s8 rssi, u8 *data, u8 len, 6185 bool ext_adv, bool ctl_time, u64 instant) 6186 { 6187 struct discovery_state *d = &hdev->discovery; 6188 struct smp_irk *irk; 6189 struct hci_conn *conn; 6190 bool match, bdaddr_resolved; 6191 u32 flags; 6192 u8 *ptr; 6193 6194 switch (type) { 6195 case LE_ADV_IND: 6196 case LE_ADV_DIRECT_IND: 6197 case LE_ADV_SCAN_IND: 6198 case LE_ADV_NONCONN_IND: 6199 case LE_ADV_SCAN_RSP: 6200 break; 6201 default: 6202 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6203 "type: 0x%02x", type); 6204 return; 6205 } 6206 6207 if (!ext_adv && len > HCI_MAX_AD_LENGTH) { 6208 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes"); 6209 return; 6210 } 6211 6212 /* Find the end of the data in case the report contains padded zero 6213 * bytes at the end causing an invalid length value. 6214 * 6215 * When data is NULL, len is 0 so there is no need for extra ptr 6216 * check as 'ptr < data + 0' is already false in such case. 6217 */ 6218 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6219 if (ptr + 1 + *ptr > data + len) 6220 break; 6221 } 6222 6223 /* Adjust for actual length. This handles the case when remote 6224 * device is advertising with incorrect data length. 6225 */ 6226 len = ptr - data; 6227 6228 /* If the direct address is present, then this report is from 6229 * a LE Direct Advertising Report event. In that case it is 6230 * important to see if the address is matching the local 6231 * controller address. 6232 */ 6233 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6234 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6235 &bdaddr_resolved); 6236 6237 /* Only resolvable random addresses are valid for these 6238 * kind of reports and others can be ignored. 6239 */ 6240 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6241 return; 6242 6243 /* If the controller is not using resolvable random 6244 * addresses, then this report can be ignored. 6245 */ 6246 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6247 return; 6248 6249 /* If the local IRK of the controller does not match 6250 * with the resolvable random address provided, then 6251 * this report can be ignored. 6252 */ 6253 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6254 return; 6255 } 6256 6257 /* Check if we need to convert to identity address */ 6258 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6259 if (irk) { 6260 bdaddr = &irk->bdaddr; 6261 bdaddr_type = irk->addr_type; 6262 } 6263 6264 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6265 6266 /* Check if we have been requested to connect to this device. 6267 * 6268 * direct_addr is set only for directed advertising reports (it is NULL 6269 * for advertising reports) and is already verified to be RPA above. 6270 */ 6271 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6272 type); 6273 if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) { 6274 /* Store report for later inclusion by 6275 * mgmt_device_connected 6276 */ 6277 memcpy(conn->le_adv_data, data, len); 6278 conn->le_adv_data_len = len; 6279 } 6280 6281 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6282 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6283 else 6284 flags = 0; 6285 6286 /* All scan results should be sent up for Mesh systems */ 6287 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6288 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6289 rssi, flags, data, len, NULL, 0, instant); 6290 return; 6291 } 6292 6293 /* Passive scanning shouldn't trigger any device found events, 6294 * except for devices marked as CONN_REPORT for which we do send 6295 * device found events, or advertisement monitoring requested. 6296 */ 6297 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6298 if (type == LE_ADV_DIRECT_IND) 6299 return; 6300 6301 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6302 bdaddr, bdaddr_type) && 6303 idr_is_empty(&hdev->adv_monitors_idr)) 6304 return; 6305 6306 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6307 rssi, flags, data, len, NULL, 0, 0); 6308 return; 6309 } 6310 6311 /* When receiving non-connectable or scannable undirected 6312 * advertising reports, this means that the remote device is 6313 * not connectable and then clearly indicate this in the 6314 * device found event. 6315 * 6316 * When receiving a scan response, then there is no way to 6317 * know if the remote device is connectable or not. However 6318 * since scan responses are merged with a previously seen 6319 * advertising report, the flags field from that report 6320 * will be used. 6321 * 6322 * In the really unlikely case that a controller get confused 6323 * and just sends a scan response event, then it is marked as 6324 * not connectable as well. 6325 */ 6326 if (type == LE_ADV_SCAN_RSP) 6327 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6328 6329 /* If there's nothing pending either store the data from this 6330 * event or send an immediate device found event if the data 6331 * should not be stored for later. 6332 */ 6333 if (!ext_adv && !has_pending_adv_report(hdev)) { 6334 /* If the report will trigger a SCAN_REQ store it for 6335 * later merging. 6336 */ 6337 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6338 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6339 rssi, flags, data, len); 6340 return; 6341 } 6342 6343 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6344 rssi, flags, data, len, NULL, 0, 0); 6345 return; 6346 } 6347 6348 /* Check if the pending report is for the same device as the new one */ 6349 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6350 bdaddr_type == d->last_adv_addr_type); 6351 6352 /* If the pending data doesn't match this report or this isn't a 6353 * scan response (e.g. we got a duplicate ADV_IND) then force 6354 * sending of the pending data. 6355 */ 6356 if (type != LE_ADV_SCAN_RSP || !match) { 6357 /* Send out whatever is in the cache, but skip duplicates */ 6358 if (!match) 6359 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6360 d->last_adv_addr_type, NULL, 6361 d->last_adv_rssi, d->last_adv_flags, 6362 d->last_adv_data, 6363 d->last_adv_data_len, NULL, 0, 0); 6364 6365 /* If the new report will trigger a SCAN_REQ store it for 6366 * later merging. 6367 */ 6368 if (!ext_adv && (type == LE_ADV_IND || 6369 type == LE_ADV_SCAN_IND)) { 6370 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6371 rssi, flags, data, len); 6372 return; 6373 } 6374 6375 /* The advertising reports cannot be merged, so clear 6376 * the pending report and send out a device found event. 6377 */ 6378 clear_pending_adv_report(hdev); 6379 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6380 rssi, flags, data, len, NULL, 0, 0); 6381 return; 6382 } 6383 6384 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6385 * the new event is a SCAN_RSP. We can therefore proceed with 6386 * sending a merged device found event. 6387 */ 6388 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6389 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6390 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6391 clear_pending_adv_report(hdev); 6392 } 6393 6394 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6395 struct sk_buff *skb) 6396 { 6397 struct hci_ev_le_advertising_report *ev = data; 6398 u64 instant = jiffies; 6399 6400 if (!ev->num) 6401 return; 6402 6403 hci_dev_lock(hdev); 6404 6405 while (ev->num--) { 6406 struct hci_ev_le_advertising_info *info; 6407 s8 rssi; 6408 6409 info = hci_le_ev_skb_pull(hdev, skb, 6410 HCI_EV_LE_ADVERTISING_REPORT, 6411 sizeof(*info)); 6412 if (!info) 6413 break; 6414 6415 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6416 info->length + 1)) 6417 break; 6418 6419 if (info->length <= HCI_MAX_AD_LENGTH) { 6420 rssi = info->data[info->length]; 6421 process_adv_report(hdev, info->type, &info->bdaddr, 6422 info->bdaddr_type, NULL, 0, rssi, 6423 info->data, info->length, false, 6424 false, instant); 6425 } else { 6426 bt_dev_err(hdev, "Dropping invalid advertising data"); 6427 } 6428 } 6429 6430 hci_dev_unlock(hdev); 6431 } 6432 6433 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6434 { 6435 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6436 switch (evt_type) { 6437 case LE_LEGACY_ADV_IND: 6438 return LE_ADV_IND; 6439 case LE_LEGACY_ADV_DIRECT_IND: 6440 return LE_ADV_DIRECT_IND; 6441 case LE_LEGACY_ADV_SCAN_IND: 6442 return LE_ADV_SCAN_IND; 6443 case LE_LEGACY_NONCONN_IND: 6444 return LE_ADV_NONCONN_IND; 6445 case LE_LEGACY_SCAN_RSP_ADV: 6446 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6447 return LE_ADV_SCAN_RSP; 6448 } 6449 6450 goto invalid; 6451 } 6452 6453 if (evt_type & LE_EXT_ADV_CONN_IND) { 6454 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6455 return LE_ADV_DIRECT_IND; 6456 6457 return LE_ADV_IND; 6458 } 6459 6460 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6461 return LE_ADV_SCAN_RSP; 6462 6463 if (evt_type & LE_EXT_ADV_SCAN_IND) 6464 return LE_ADV_SCAN_IND; 6465 6466 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6467 evt_type & LE_EXT_ADV_DIRECT_IND) 6468 return LE_ADV_NONCONN_IND; 6469 6470 invalid: 6471 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6472 evt_type); 6473 6474 return LE_ADV_INVALID; 6475 } 6476 6477 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6478 struct sk_buff *skb) 6479 { 6480 struct hci_ev_le_ext_adv_report *ev = data; 6481 u64 instant = jiffies; 6482 6483 if (!ev->num) 6484 return; 6485 6486 hci_dev_lock(hdev); 6487 6488 while (ev->num--) { 6489 struct hci_ev_le_ext_adv_info *info; 6490 u8 legacy_evt_type; 6491 u16 evt_type; 6492 6493 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6494 sizeof(*info)); 6495 if (!info) 6496 break; 6497 6498 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6499 info->length)) 6500 break; 6501 6502 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6503 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6504 if (legacy_evt_type != LE_ADV_INVALID) { 6505 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6506 info->bdaddr_type, NULL, 0, 6507 info->rssi, info->data, info->length, 6508 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6509 false, instant); 6510 } 6511 } 6512 6513 hci_dev_unlock(hdev); 6514 } 6515 6516 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6517 { 6518 struct hci_cp_le_pa_term_sync cp; 6519 6520 memset(&cp, 0, sizeof(cp)); 6521 cp.handle = handle; 6522 6523 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6524 } 6525 6526 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6527 struct sk_buff *skb) 6528 { 6529 struct hci_ev_le_pa_sync_established *ev = data; 6530 int mask = hdev->link_mode; 6531 __u8 flags = 0; 6532 6533 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6534 6535 if (ev->status) 6536 return; 6537 6538 hci_dev_lock(hdev); 6539 6540 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6541 6542 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6543 if (!(mask & HCI_LM_ACCEPT)) 6544 hci_le_pa_term_sync(hdev, ev->handle); 6545 6546 hci_dev_unlock(hdev); 6547 } 6548 6549 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6550 struct sk_buff *skb) 6551 { 6552 struct hci_ev_le_remote_feat_complete *ev = data; 6553 struct hci_conn *conn; 6554 6555 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6556 6557 hci_dev_lock(hdev); 6558 6559 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6560 if (conn) { 6561 if (!ev->status) 6562 memcpy(conn->features[0], ev->features, 8); 6563 6564 if (conn->state == BT_CONFIG) { 6565 __u8 status; 6566 6567 /* If the local controller supports peripheral-initiated 6568 * features exchange, but the remote controller does 6569 * not, then it is possible that the error code 0x1a 6570 * for unsupported remote feature gets returned. 6571 * 6572 * In this specific case, allow the connection to 6573 * transition into connected state and mark it as 6574 * successful. 6575 */ 6576 if (!conn->out && ev->status == 0x1a && 6577 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6578 status = 0x00; 6579 else 6580 status = ev->status; 6581 6582 conn->state = BT_CONNECTED; 6583 hci_connect_cfm(conn, status); 6584 hci_conn_drop(conn); 6585 } 6586 } 6587 6588 hci_dev_unlock(hdev); 6589 } 6590 6591 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6592 struct sk_buff *skb) 6593 { 6594 struct hci_ev_le_ltk_req *ev = data; 6595 struct hci_cp_le_ltk_reply cp; 6596 struct hci_cp_le_ltk_neg_reply neg; 6597 struct hci_conn *conn; 6598 struct smp_ltk *ltk; 6599 6600 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6601 6602 hci_dev_lock(hdev); 6603 6604 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6605 if (conn == NULL) 6606 goto not_found; 6607 6608 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6609 if (!ltk) 6610 goto not_found; 6611 6612 if (smp_ltk_is_sc(ltk)) { 6613 /* With SC both EDiv and Rand are set to zero */ 6614 if (ev->ediv || ev->rand) 6615 goto not_found; 6616 } else { 6617 /* For non-SC keys check that EDiv and Rand match */ 6618 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6619 goto not_found; 6620 } 6621 6622 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6623 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6624 cp.handle = cpu_to_le16(conn->handle); 6625 6626 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6627 6628 conn->enc_key_size = ltk->enc_size; 6629 6630 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6631 6632 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6633 * temporary key used to encrypt a connection following 6634 * pairing. It is used during the Encrypted Session Setup to 6635 * distribute the keys. Later, security can be re-established 6636 * using a distributed LTK. 6637 */ 6638 if (ltk->type == SMP_STK) { 6639 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6640 list_del_rcu(<k->list); 6641 kfree_rcu(ltk, rcu); 6642 } else { 6643 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6644 } 6645 6646 hci_dev_unlock(hdev); 6647 6648 return; 6649 6650 not_found: 6651 neg.handle = ev->handle; 6652 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6653 hci_dev_unlock(hdev); 6654 } 6655 6656 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6657 u8 reason) 6658 { 6659 struct hci_cp_le_conn_param_req_neg_reply cp; 6660 6661 cp.handle = cpu_to_le16(handle); 6662 cp.reason = reason; 6663 6664 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6665 &cp); 6666 } 6667 6668 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6669 struct sk_buff *skb) 6670 { 6671 struct hci_ev_le_remote_conn_param_req *ev = data; 6672 struct hci_cp_le_conn_param_req_reply cp; 6673 struct hci_conn *hcon; 6674 u16 handle, min, max, latency, timeout; 6675 6676 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6677 6678 handle = le16_to_cpu(ev->handle); 6679 min = le16_to_cpu(ev->interval_min); 6680 max = le16_to_cpu(ev->interval_max); 6681 latency = le16_to_cpu(ev->latency); 6682 timeout = le16_to_cpu(ev->timeout); 6683 6684 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6685 if (!hcon || hcon->state != BT_CONNECTED) 6686 return send_conn_param_neg_reply(hdev, handle, 6687 HCI_ERROR_UNKNOWN_CONN_ID); 6688 6689 if (hci_check_conn_params(min, max, latency, timeout)) 6690 return send_conn_param_neg_reply(hdev, handle, 6691 HCI_ERROR_INVALID_LL_PARAMS); 6692 6693 if (hcon->role == HCI_ROLE_MASTER) { 6694 struct hci_conn_params *params; 6695 u8 store_hint; 6696 6697 hci_dev_lock(hdev); 6698 6699 params = hci_conn_params_lookup(hdev, &hcon->dst, 6700 hcon->dst_type); 6701 if (params) { 6702 params->conn_min_interval = min; 6703 params->conn_max_interval = max; 6704 params->conn_latency = latency; 6705 params->supervision_timeout = timeout; 6706 store_hint = 0x01; 6707 } else { 6708 store_hint = 0x00; 6709 } 6710 6711 hci_dev_unlock(hdev); 6712 6713 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6714 store_hint, min, max, latency, timeout); 6715 } 6716 6717 cp.handle = ev->handle; 6718 cp.interval_min = ev->interval_min; 6719 cp.interval_max = ev->interval_max; 6720 cp.latency = ev->latency; 6721 cp.timeout = ev->timeout; 6722 cp.min_ce_len = 0; 6723 cp.max_ce_len = 0; 6724 6725 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6726 } 6727 6728 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6729 struct sk_buff *skb) 6730 { 6731 struct hci_ev_le_direct_adv_report *ev = data; 6732 u64 instant = jiffies; 6733 int i; 6734 6735 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6736 flex_array_size(ev, info, ev->num))) 6737 return; 6738 6739 if (!ev->num) 6740 return; 6741 6742 hci_dev_lock(hdev); 6743 6744 for (i = 0; i < ev->num; i++) { 6745 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6746 6747 process_adv_report(hdev, info->type, &info->bdaddr, 6748 info->bdaddr_type, &info->direct_addr, 6749 info->direct_addr_type, info->rssi, NULL, 0, 6750 false, false, instant); 6751 } 6752 6753 hci_dev_unlock(hdev); 6754 } 6755 6756 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6757 struct sk_buff *skb) 6758 { 6759 struct hci_ev_le_phy_update_complete *ev = data; 6760 struct hci_conn *conn; 6761 6762 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6763 6764 if (ev->status) 6765 return; 6766 6767 hci_dev_lock(hdev); 6768 6769 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6770 if (!conn) 6771 goto unlock; 6772 6773 conn->le_tx_phy = ev->tx_phy; 6774 conn->le_rx_phy = ev->rx_phy; 6775 6776 unlock: 6777 hci_dev_unlock(hdev); 6778 } 6779 6780 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6781 struct sk_buff *skb) 6782 { 6783 struct hci_evt_le_cis_established *ev = data; 6784 struct hci_conn *conn; 6785 u16 handle = __le16_to_cpu(ev->handle); 6786 6787 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6788 6789 hci_dev_lock(hdev); 6790 6791 conn = hci_conn_hash_lookup_handle(hdev, handle); 6792 if (!conn) { 6793 bt_dev_err(hdev, 6794 "Unable to find connection with handle 0x%4.4x", 6795 handle); 6796 goto unlock; 6797 } 6798 6799 if (conn->type != ISO_LINK) { 6800 bt_dev_err(hdev, 6801 "Invalid connection link type handle 0x%4.4x", 6802 handle); 6803 goto unlock; 6804 } 6805 6806 if (conn->role == HCI_ROLE_SLAVE) { 6807 __le32 interval; 6808 6809 memset(&interval, 0, sizeof(interval)); 6810 6811 memcpy(&interval, ev->c_latency, sizeof(ev->c_latency)); 6812 conn->iso_qos.ucast.in.interval = le32_to_cpu(interval); 6813 memcpy(&interval, ev->p_latency, sizeof(ev->p_latency)); 6814 conn->iso_qos.ucast.out.interval = le32_to_cpu(interval); 6815 conn->iso_qos.ucast.in.latency = le16_to_cpu(ev->interval); 6816 conn->iso_qos.ucast.out.latency = le16_to_cpu(ev->interval); 6817 conn->iso_qos.ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6818 conn->iso_qos.ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6819 conn->iso_qos.ucast.in.phy = ev->c_phy; 6820 conn->iso_qos.ucast.out.phy = ev->p_phy; 6821 } 6822 6823 if (!ev->status) { 6824 conn->state = BT_CONNECTED; 6825 hci_debugfs_create_conn(conn); 6826 hci_conn_add_sysfs(conn); 6827 hci_iso_setup_path(conn); 6828 goto unlock; 6829 } 6830 6831 hci_connect_cfm(conn, ev->status); 6832 hci_conn_del(conn); 6833 6834 unlock: 6835 hci_dev_unlock(hdev); 6836 } 6837 6838 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6839 { 6840 struct hci_cp_le_reject_cis cp; 6841 6842 memset(&cp, 0, sizeof(cp)); 6843 cp.handle = handle; 6844 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6845 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6846 } 6847 6848 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6849 { 6850 struct hci_cp_le_accept_cis cp; 6851 6852 memset(&cp, 0, sizeof(cp)); 6853 cp.handle = handle; 6854 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6855 } 6856 6857 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6858 struct sk_buff *skb) 6859 { 6860 struct hci_evt_le_cis_req *ev = data; 6861 u16 acl_handle, cis_handle; 6862 struct hci_conn *acl, *cis; 6863 int mask; 6864 __u8 flags = 0; 6865 6866 acl_handle = __le16_to_cpu(ev->acl_handle); 6867 cis_handle = __le16_to_cpu(ev->cis_handle); 6868 6869 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6870 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6871 6872 hci_dev_lock(hdev); 6873 6874 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6875 if (!acl) 6876 goto unlock; 6877 6878 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 6879 if (!(mask & HCI_LM_ACCEPT)) { 6880 hci_le_reject_cis(hdev, ev->cis_handle); 6881 goto unlock; 6882 } 6883 6884 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6885 if (!cis) { 6886 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE); 6887 if (!cis) { 6888 hci_le_reject_cis(hdev, ev->cis_handle); 6889 goto unlock; 6890 } 6891 cis->handle = cis_handle; 6892 } 6893 6894 cis->iso_qos.ucast.cig = ev->cig_id; 6895 cis->iso_qos.ucast.cis = ev->cis_id; 6896 6897 if (!(flags & HCI_PROTO_DEFER)) { 6898 hci_le_accept_cis(hdev, ev->cis_handle); 6899 } else { 6900 cis->state = BT_CONNECT2; 6901 hci_connect_cfm(cis, 0); 6902 } 6903 6904 unlock: 6905 hci_dev_unlock(hdev); 6906 } 6907 6908 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6909 struct sk_buff *skb) 6910 { 6911 struct hci_evt_le_create_big_complete *ev = data; 6912 struct hci_conn *conn; 6913 6914 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6915 6916 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6917 flex_array_size(ev, bis_handle, ev->num_bis))) 6918 return; 6919 6920 hci_dev_lock(hdev); 6921 6922 conn = hci_conn_hash_lookup_big(hdev, ev->handle); 6923 if (!conn) 6924 goto unlock; 6925 6926 if (conn->type != ISO_LINK) { 6927 bt_dev_err(hdev, 6928 "Invalid connection link type handle 0x%2.2x", 6929 ev->handle); 6930 goto unlock; 6931 } 6932 6933 if (ev->num_bis) 6934 conn->handle = __le16_to_cpu(ev->bis_handle[0]); 6935 6936 if (!ev->status) { 6937 conn->state = BT_CONNECTED; 6938 hci_debugfs_create_conn(conn); 6939 hci_conn_add_sysfs(conn); 6940 hci_iso_setup_path(conn); 6941 goto unlock; 6942 } 6943 6944 hci_connect_cfm(conn, ev->status); 6945 hci_conn_del(conn); 6946 6947 unlock: 6948 hci_dev_unlock(hdev); 6949 } 6950 6951 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6952 struct sk_buff *skb) 6953 { 6954 struct hci_evt_le_big_sync_estabilished *ev = data; 6955 struct hci_conn *bis; 6956 int i; 6957 6958 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6959 6960 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 6961 flex_array_size(ev, bis, ev->num_bis))) 6962 return; 6963 6964 if (ev->status) 6965 return; 6966 6967 hci_dev_lock(hdev); 6968 6969 for (i = 0; i < ev->num_bis; i++) { 6970 u16 handle = le16_to_cpu(ev->bis[i]); 6971 __le32 interval; 6972 6973 bis = hci_conn_hash_lookup_handle(hdev, handle); 6974 if (!bis) { 6975 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 6976 HCI_ROLE_SLAVE); 6977 if (!bis) 6978 continue; 6979 bis->handle = handle; 6980 } 6981 6982 bis->iso_qos.bcast.big = ev->handle; 6983 memset(&interval, 0, sizeof(interval)); 6984 memcpy(&interval, ev->latency, sizeof(ev->latency)); 6985 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 6986 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 6987 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 6988 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 6989 6990 hci_iso_setup_path(bis); 6991 } 6992 6993 hci_dev_unlock(hdev); 6994 } 6995 6996 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 6997 struct sk_buff *skb) 6998 { 6999 struct hci_evt_le_big_info_adv_report *ev = data; 7000 int mask = hdev->link_mode; 7001 __u8 flags = 0; 7002 7003 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7004 7005 hci_dev_lock(hdev); 7006 7007 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 7008 if (!(mask & HCI_LM_ACCEPT)) 7009 hci_le_pa_term_sync(hdev, ev->sync_handle); 7010 7011 hci_dev_unlock(hdev); 7012 } 7013 7014 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7015 [_op] = { \ 7016 .func = _func, \ 7017 .min_len = _min_len, \ 7018 .max_len = _max_len, \ 7019 } 7020 7021 #define HCI_LE_EV(_op, _func, _len) \ 7022 HCI_LE_EV_VL(_op, _func, _len, _len) 7023 7024 #define HCI_LE_EV_STATUS(_op, _func) \ 7025 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7026 7027 /* Entries in this table shall have their position according to the subevent 7028 * opcode they handle so the use of the macros above is recommend since it does 7029 * attempt to initialize at its proper index using Designated Initializers that 7030 * way events without a callback function can be ommited. 7031 */ 7032 static const struct hci_le_ev { 7033 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7034 u16 min_len; 7035 u16 max_len; 7036 } hci_le_ev_table[U8_MAX + 1] = { 7037 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7038 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7039 sizeof(struct hci_ev_le_conn_complete)), 7040 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7041 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7042 sizeof(struct hci_ev_le_advertising_report), 7043 HCI_MAX_EVENT_SIZE), 7044 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7045 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7046 hci_le_conn_update_complete_evt, 7047 sizeof(struct hci_ev_le_conn_update_complete)), 7048 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7049 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7050 hci_le_remote_feat_complete_evt, 7051 sizeof(struct hci_ev_le_remote_feat_complete)), 7052 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7053 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7054 sizeof(struct hci_ev_le_ltk_req)), 7055 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7056 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7057 hci_le_remote_conn_param_req_evt, 7058 sizeof(struct hci_ev_le_remote_conn_param_req)), 7059 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7060 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7061 hci_le_enh_conn_complete_evt, 7062 sizeof(struct hci_ev_le_enh_conn_complete)), 7063 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7064 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7065 sizeof(struct hci_ev_le_direct_adv_report), 7066 HCI_MAX_EVENT_SIZE), 7067 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7068 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7069 sizeof(struct hci_ev_le_phy_update_complete)), 7070 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7071 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7072 sizeof(struct hci_ev_le_ext_adv_report), 7073 HCI_MAX_EVENT_SIZE), 7074 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7075 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7076 hci_le_pa_sync_estabilished_evt, 7077 sizeof(struct hci_ev_le_pa_sync_established)), 7078 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7079 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7080 sizeof(struct hci_evt_le_ext_adv_set_term)), 7081 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7082 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7083 sizeof(struct hci_evt_le_cis_established)), 7084 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7085 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7086 sizeof(struct hci_evt_le_cis_req)), 7087 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7088 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7089 hci_le_create_big_complete_evt, 7090 sizeof(struct hci_evt_le_create_big_complete), 7091 HCI_MAX_EVENT_SIZE), 7092 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7093 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7094 hci_le_big_sync_established_evt, 7095 sizeof(struct hci_evt_le_big_sync_estabilished), 7096 HCI_MAX_EVENT_SIZE), 7097 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7098 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7099 hci_le_big_info_adv_report_evt, 7100 sizeof(struct hci_evt_le_big_info_adv_report), 7101 HCI_MAX_EVENT_SIZE), 7102 }; 7103 7104 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7105 struct sk_buff *skb, u16 *opcode, u8 *status, 7106 hci_req_complete_t *req_complete, 7107 hci_req_complete_skb_t *req_complete_skb) 7108 { 7109 struct hci_ev_le_meta *ev = data; 7110 const struct hci_le_ev *subev; 7111 7112 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7113 7114 /* Only match event if command OGF is for LE */ 7115 if (hdev->sent_cmd && 7116 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 && 7117 hci_skb_event(hdev->sent_cmd) == ev->subevent) { 7118 *opcode = hci_skb_opcode(hdev->sent_cmd); 7119 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7120 req_complete_skb); 7121 } 7122 7123 subev = &hci_le_ev_table[ev->subevent]; 7124 if (!subev->func) 7125 return; 7126 7127 if (skb->len < subev->min_len) { 7128 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7129 ev->subevent, skb->len, subev->min_len); 7130 return; 7131 } 7132 7133 /* Just warn if the length is over max_len size it still be 7134 * possible to partially parse the event so leave to callback to 7135 * decide if that is acceptable. 7136 */ 7137 if (skb->len > subev->max_len) 7138 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7139 ev->subevent, skb->len, subev->max_len); 7140 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7141 if (!data) 7142 return; 7143 7144 subev->func(hdev, data, skb); 7145 } 7146 7147 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7148 u8 event, struct sk_buff *skb) 7149 { 7150 struct hci_ev_cmd_complete *ev; 7151 struct hci_event_hdr *hdr; 7152 7153 if (!skb) 7154 return false; 7155 7156 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7157 if (!hdr) 7158 return false; 7159 7160 if (event) { 7161 if (hdr->evt != event) 7162 return false; 7163 return true; 7164 } 7165 7166 /* Check if request ended in Command Status - no way to retrieve 7167 * any extra parameters in this case. 7168 */ 7169 if (hdr->evt == HCI_EV_CMD_STATUS) 7170 return false; 7171 7172 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7173 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7174 hdr->evt); 7175 return false; 7176 } 7177 7178 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7179 if (!ev) 7180 return false; 7181 7182 if (opcode != __le16_to_cpu(ev->opcode)) { 7183 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7184 __le16_to_cpu(ev->opcode)); 7185 return false; 7186 } 7187 7188 return true; 7189 } 7190 7191 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7192 struct sk_buff *skb) 7193 { 7194 struct hci_ev_le_advertising_info *adv; 7195 struct hci_ev_le_direct_adv_info *direct_adv; 7196 struct hci_ev_le_ext_adv_info *ext_adv; 7197 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7198 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7199 7200 hci_dev_lock(hdev); 7201 7202 /* If we are currently suspended and this is the first BT event seen, 7203 * save the wake reason associated with the event. 7204 */ 7205 if (!hdev->suspended || hdev->wake_reason) 7206 goto unlock; 7207 7208 /* Default to remote wake. Values for wake_reason are documented in the 7209 * Bluez mgmt api docs. 7210 */ 7211 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7212 7213 /* Once configured for remote wakeup, we should only wake up for 7214 * reconnections. It's useful to see which device is waking us up so 7215 * keep track of the bdaddr of the connection event that woke us up. 7216 */ 7217 if (event == HCI_EV_CONN_REQUEST) { 7218 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7219 hdev->wake_addr_type = BDADDR_BREDR; 7220 } else if (event == HCI_EV_CONN_COMPLETE) { 7221 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7222 hdev->wake_addr_type = BDADDR_BREDR; 7223 } else if (event == HCI_EV_LE_META) { 7224 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7225 u8 subevent = le_ev->subevent; 7226 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7227 u8 num_reports = *ptr; 7228 7229 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7230 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7231 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7232 num_reports) { 7233 adv = (void *)(ptr + 1); 7234 direct_adv = (void *)(ptr + 1); 7235 ext_adv = (void *)(ptr + 1); 7236 7237 switch (subevent) { 7238 case HCI_EV_LE_ADVERTISING_REPORT: 7239 bacpy(&hdev->wake_addr, &adv->bdaddr); 7240 hdev->wake_addr_type = adv->bdaddr_type; 7241 break; 7242 case HCI_EV_LE_DIRECT_ADV_REPORT: 7243 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7244 hdev->wake_addr_type = direct_adv->bdaddr_type; 7245 break; 7246 case HCI_EV_LE_EXT_ADV_REPORT: 7247 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7248 hdev->wake_addr_type = ext_adv->bdaddr_type; 7249 break; 7250 } 7251 } 7252 } else { 7253 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7254 } 7255 7256 unlock: 7257 hci_dev_unlock(hdev); 7258 } 7259 7260 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7261 [_op] = { \ 7262 .req = false, \ 7263 .func = _func, \ 7264 .min_len = _min_len, \ 7265 .max_len = _max_len, \ 7266 } 7267 7268 #define HCI_EV(_op, _func, _len) \ 7269 HCI_EV_VL(_op, _func, _len, _len) 7270 7271 #define HCI_EV_STATUS(_op, _func) \ 7272 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7273 7274 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7275 [_op] = { \ 7276 .req = true, \ 7277 .func_req = _func, \ 7278 .min_len = _min_len, \ 7279 .max_len = _max_len, \ 7280 } 7281 7282 #define HCI_EV_REQ(_op, _func, _len) \ 7283 HCI_EV_REQ_VL(_op, _func, _len, _len) 7284 7285 /* Entries in this table shall have their position according to the event opcode 7286 * they handle so the use of the macros above is recommend since it does attempt 7287 * to initialize at its proper index using Designated Initializers that way 7288 * events without a callback function don't have entered. 7289 */ 7290 static const struct hci_ev { 7291 bool req; 7292 union { 7293 void (*func)(struct hci_dev *hdev, void *data, 7294 struct sk_buff *skb); 7295 void (*func_req)(struct hci_dev *hdev, void *data, 7296 struct sk_buff *skb, u16 *opcode, u8 *status, 7297 hci_req_complete_t *req_complete, 7298 hci_req_complete_skb_t *req_complete_skb); 7299 }; 7300 u16 min_len; 7301 u16 max_len; 7302 } hci_ev_table[U8_MAX + 1] = { 7303 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7304 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7305 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7306 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7307 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7308 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7309 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7310 sizeof(struct hci_ev_conn_complete)), 7311 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7312 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7313 sizeof(struct hci_ev_conn_request)), 7314 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7315 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7316 sizeof(struct hci_ev_disconn_complete)), 7317 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7318 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7319 sizeof(struct hci_ev_auth_complete)), 7320 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7321 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7322 sizeof(struct hci_ev_remote_name)), 7323 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7324 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7325 sizeof(struct hci_ev_encrypt_change)), 7326 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7327 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7328 hci_change_link_key_complete_evt, 7329 sizeof(struct hci_ev_change_link_key_complete)), 7330 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7331 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7332 sizeof(struct hci_ev_remote_features)), 7333 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7334 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7335 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7336 /* [0x0f = HCI_EV_CMD_STATUS] */ 7337 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7338 sizeof(struct hci_ev_cmd_status)), 7339 /* [0x10 = HCI_EV_CMD_STATUS] */ 7340 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7341 sizeof(struct hci_ev_hardware_error)), 7342 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7343 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7344 sizeof(struct hci_ev_role_change)), 7345 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7346 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7347 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7348 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7349 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7350 sizeof(struct hci_ev_mode_change)), 7351 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7352 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7353 sizeof(struct hci_ev_pin_code_req)), 7354 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7355 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7356 sizeof(struct hci_ev_link_key_req)), 7357 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7358 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7359 sizeof(struct hci_ev_link_key_notify)), 7360 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7361 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7362 sizeof(struct hci_ev_clock_offset)), 7363 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7364 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7365 sizeof(struct hci_ev_pkt_type_change)), 7366 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7367 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7368 sizeof(struct hci_ev_pscan_rep_mode)), 7369 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7370 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7371 hci_inquiry_result_with_rssi_evt, 7372 sizeof(struct hci_ev_inquiry_result_rssi), 7373 HCI_MAX_EVENT_SIZE), 7374 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7375 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7376 sizeof(struct hci_ev_remote_ext_features)), 7377 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7378 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7379 sizeof(struct hci_ev_sync_conn_complete)), 7380 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7381 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7382 hci_extended_inquiry_result_evt, 7383 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7384 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7385 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7386 sizeof(struct hci_ev_key_refresh_complete)), 7387 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7388 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7389 sizeof(struct hci_ev_io_capa_request)), 7390 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7391 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7392 sizeof(struct hci_ev_io_capa_reply)), 7393 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7394 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7395 sizeof(struct hci_ev_user_confirm_req)), 7396 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7397 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7398 sizeof(struct hci_ev_user_passkey_req)), 7399 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7400 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7401 sizeof(struct hci_ev_remote_oob_data_request)), 7402 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7403 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7404 sizeof(struct hci_ev_simple_pair_complete)), 7405 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7406 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7407 sizeof(struct hci_ev_user_passkey_notify)), 7408 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7409 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7410 sizeof(struct hci_ev_keypress_notify)), 7411 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7412 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7413 sizeof(struct hci_ev_remote_host_features)), 7414 /* [0x3e = HCI_EV_LE_META] */ 7415 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7416 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7417 #if IS_ENABLED(CONFIG_BT_HS) 7418 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */ 7419 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt, 7420 sizeof(struct hci_ev_phy_link_complete)), 7421 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */ 7422 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt, 7423 sizeof(struct hci_ev_channel_selected)), 7424 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */ 7425 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE, 7426 hci_disconn_loglink_complete_evt, 7427 sizeof(struct hci_ev_disconn_logical_link_complete)), 7428 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */ 7429 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt, 7430 sizeof(struct hci_ev_logical_link_complete)), 7431 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */ 7432 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE, 7433 hci_disconn_phylink_complete_evt, 7434 sizeof(struct hci_ev_disconn_phy_link_complete)), 7435 #endif 7436 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */ 7437 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt, 7438 sizeof(struct hci_ev_num_comp_blocks)), 7439 /* [0xff = HCI_EV_VENDOR] */ 7440 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7441 }; 7442 7443 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7444 u16 *opcode, u8 *status, 7445 hci_req_complete_t *req_complete, 7446 hci_req_complete_skb_t *req_complete_skb) 7447 { 7448 const struct hci_ev *ev = &hci_ev_table[event]; 7449 void *data; 7450 7451 if (!ev->func) 7452 return; 7453 7454 if (skb->len < ev->min_len) { 7455 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7456 event, skb->len, ev->min_len); 7457 return; 7458 } 7459 7460 /* Just warn if the length is over max_len size it still be 7461 * possible to partially parse the event so leave to callback to 7462 * decide if that is acceptable. 7463 */ 7464 if (skb->len > ev->max_len) 7465 bt_dev_warn_ratelimited(hdev, 7466 "unexpected event 0x%2.2x length: %u > %u", 7467 event, skb->len, ev->max_len); 7468 7469 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7470 if (!data) 7471 return; 7472 7473 if (ev->req) 7474 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7475 req_complete_skb); 7476 else 7477 ev->func(hdev, data, skb); 7478 } 7479 7480 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7481 { 7482 struct hci_event_hdr *hdr = (void *) skb->data; 7483 hci_req_complete_t req_complete = NULL; 7484 hci_req_complete_skb_t req_complete_skb = NULL; 7485 struct sk_buff *orig_skb = NULL; 7486 u8 status = 0, event, req_evt = 0; 7487 u16 opcode = HCI_OP_NOP; 7488 7489 if (skb->len < sizeof(*hdr)) { 7490 bt_dev_err(hdev, "Malformed HCI Event"); 7491 goto done; 7492 } 7493 7494 kfree_skb(hdev->recv_event); 7495 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7496 7497 event = hdr->evt; 7498 if (!event) { 7499 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7500 event); 7501 goto done; 7502 } 7503 7504 /* Only match event if command OGF is not for LE */ 7505 if (hdev->sent_cmd && 7506 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 && 7507 hci_skb_event(hdev->sent_cmd) == event) { 7508 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd), 7509 status, &req_complete, &req_complete_skb); 7510 req_evt = event; 7511 } 7512 7513 /* If it looks like we might end up having to call 7514 * req_complete_skb, store a pristine copy of the skb since the 7515 * various handlers may modify the original one through 7516 * skb_pull() calls, etc. 7517 */ 7518 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7519 event == HCI_EV_CMD_COMPLETE) 7520 orig_skb = skb_clone(skb, GFP_KERNEL); 7521 7522 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7523 7524 /* Store wake reason if we're suspended */ 7525 hci_store_wake_reason(hdev, event, skb); 7526 7527 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7528 7529 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7530 &req_complete_skb); 7531 7532 if (req_complete) { 7533 req_complete(hdev, status, opcode); 7534 } else if (req_complete_skb) { 7535 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7536 kfree_skb(orig_skb); 7537 orig_skb = NULL; 7538 } 7539 req_complete_skb(hdev, status, opcode, orig_skb); 7540 } 7541 7542 done: 7543 kfree_skb(orig_skb); 7544 kfree_skb(skb); 7545 hdev->stat.evt_rx++; 7546 } 7547