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 WRITE_ONCE(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 /* Inform sockets conn is gone before we delete it */ 2788 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED); 2789 2790 goto done; 2791 } 2792 2793 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2794 2795 if (conn->type == ACL_LINK) { 2796 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2797 hci_remove_link_key(hdev, &conn->dst); 2798 } 2799 2800 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2801 if (params) { 2802 switch (params->auto_connect) { 2803 case HCI_AUTO_CONN_LINK_LOSS: 2804 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2805 break; 2806 fallthrough; 2807 2808 case HCI_AUTO_CONN_DIRECT: 2809 case HCI_AUTO_CONN_ALWAYS: 2810 hci_pend_le_list_del_init(params); 2811 hci_pend_le_list_add(params, &hdev->pend_le_conns); 2812 break; 2813 2814 default: 2815 break; 2816 } 2817 } 2818 2819 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2820 cp->reason, mgmt_conn); 2821 2822 hci_disconn_cfm(conn, cp->reason); 2823 2824 done: 2825 /* If the disconnection failed for any reason, the upper layer 2826 * does not retry to disconnect in current implementation. 2827 * Hence, we need to do some basic cleanup here and re-enable 2828 * advertising if necessary. 2829 */ 2830 hci_conn_del(conn); 2831 unlock: 2832 hci_dev_unlock(hdev); 2833 } 2834 2835 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2836 { 2837 /* When using controller based address resolution, then the new 2838 * address types 0x02 and 0x03 are used. These types need to be 2839 * converted back into either public address or random address type 2840 */ 2841 switch (type) { 2842 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2843 if (resolved) 2844 *resolved = true; 2845 return ADDR_LE_DEV_PUBLIC; 2846 case ADDR_LE_DEV_RANDOM_RESOLVED: 2847 if (resolved) 2848 *resolved = true; 2849 return ADDR_LE_DEV_RANDOM; 2850 } 2851 2852 if (resolved) 2853 *resolved = false; 2854 return type; 2855 } 2856 2857 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2858 u8 peer_addr_type, u8 own_address_type, 2859 u8 filter_policy) 2860 { 2861 struct hci_conn *conn; 2862 2863 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2864 peer_addr_type); 2865 if (!conn) 2866 return; 2867 2868 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2869 2870 /* Store the initiator and responder address information which 2871 * is needed for SMP. These values will not change during the 2872 * lifetime of the connection. 2873 */ 2874 conn->init_addr_type = own_address_type; 2875 if (own_address_type == ADDR_LE_DEV_RANDOM) 2876 bacpy(&conn->init_addr, &hdev->random_addr); 2877 else 2878 bacpy(&conn->init_addr, &hdev->bdaddr); 2879 2880 conn->resp_addr_type = peer_addr_type; 2881 bacpy(&conn->resp_addr, peer_addr); 2882 } 2883 2884 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2885 { 2886 struct hci_cp_le_create_conn *cp; 2887 2888 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2889 2890 /* All connection failure handling is taken care of by the 2891 * hci_conn_failed function which is triggered by the HCI 2892 * request completion callbacks used for connecting. 2893 */ 2894 if (status) 2895 return; 2896 2897 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2898 if (!cp) 2899 return; 2900 2901 hci_dev_lock(hdev); 2902 2903 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2904 cp->own_address_type, cp->filter_policy); 2905 2906 hci_dev_unlock(hdev); 2907 } 2908 2909 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2910 { 2911 struct hci_cp_le_ext_create_conn *cp; 2912 2913 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2914 2915 /* All connection failure handling is taken care of by the 2916 * hci_conn_failed function which is triggered by the HCI 2917 * request completion callbacks used for connecting. 2918 */ 2919 if (status) 2920 return; 2921 2922 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2923 if (!cp) 2924 return; 2925 2926 hci_dev_lock(hdev); 2927 2928 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2929 cp->own_addr_type, cp->filter_policy); 2930 2931 hci_dev_unlock(hdev); 2932 } 2933 2934 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2935 { 2936 struct hci_cp_le_read_remote_features *cp; 2937 struct hci_conn *conn; 2938 2939 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2940 2941 if (!status) 2942 return; 2943 2944 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2945 if (!cp) 2946 return; 2947 2948 hci_dev_lock(hdev); 2949 2950 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2951 if (conn) { 2952 if (conn->state == BT_CONFIG) { 2953 hci_connect_cfm(conn, status); 2954 hci_conn_drop(conn); 2955 } 2956 } 2957 2958 hci_dev_unlock(hdev); 2959 } 2960 2961 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2962 { 2963 struct hci_cp_le_start_enc *cp; 2964 struct hci_conn *conn; 2965 2966 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2967 2968 if (!status) 2969 return; 2970 2971 hci_dev_lock(hdev); 2972 2973 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2974 if (!cp) 2975 goto unlock; 2976 2977 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2978 if (!conn) 2979 goto unlock; 2980 2981 if (conn->state != BT_CONNECTED) 2982 goto unlock; 2983 2984 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2985 hci_conn_drop(conn); 2986 2987 unlock: 2988 hci_dev_unlock(hdev); 2989 } 2990 2991 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2992 { 2993 struct hci_cp_switch_role *cp; 2994 struct hci_conn *conn; 2995 2996 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2997 2998 if (!status) 2999 return; 3000 3001 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 3002 if (!cp) 3003 return; 3004 3005 hci_dev_lock(hdev); 3006 3007 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 3008 if (conn) 3009 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 3010 3011 hci_dev_unlock(hdev); 3012 } 3013 3014 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 3015 struct sk_buff *skb) 3016 { 3017 struct hci_ev_status *ev = data; 3018 struct discovery_state *discov = &hdev->discovery; 3019 struct inquiry_entry *e; 3020 3021 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3022 3023 hci_conn_check_pending(hdev); 3024 3025 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 3026 return; 3027 3028 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 3029 wake_up_bit(&hdev->flags, HCI_INQUIRY); 3030 3031 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3032 return; 3033 3034 hci_dev_lock(hdev); 3035 3036 if (discov->state != DISCOVERY_FINDING) 3037 goto unlock; 3038 3039 if (list_empty(&discov->resolve)) { 3040 /* When BR/EDR inquiry is active and no LE scanning is in 3041 * progress, then change discovery state to indicate completion. 3042 * 3043 * When running LE scanning and BR/EDR inquiry simultaneously 3044 * and the LE scan already finished, then change the discovery 3045 * state to indicate completion. 3046 */ 3047 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3048 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3049 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3050 goto unlock; 3051 } 3052 3053 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 3054 if (e && hci_resolve_name(hdev, e) == 0) { 3055 e->name_state = NAME_PENDING; 3056 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 3057 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 3058 } else { 3059 /* When BR/EDR inquiry is active and no LE scanning is in 3060 * progress, then change discovery state to indicate completion. 3061 * 3062 * When running LE scanning and BR/EDR inquiry simultaneously 3063 * and the LE scan already finished, then change the discovery 3064 * state to indicate completion. 3065 */ 3066 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3067 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3068 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3069 } 3070 3071 unlock: 3072 hci_dev_unlock(hdev); 3073 } 3074 3075 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3076 struct sk_buff *skb) 3077 { 3078 struct hci_ev_inquiry_result *ev = edata; 3079 struct inquiry_data data; 3080 int i; 3081 3082 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3083 flex_array_size(ev, info, ev->num))) 3084 return; 3085 3086 bt_dev_dbg(hdev, "num %d", ev->num); 3087 3088 if (!ev->num) 3089 return; 3090 3091 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3092 return; 3093 3094 hci_dev_lock(hdev); 3095 3096 for (i = 0; i < ev->num; i++) { 3097 struct inquiry_info *info = &ev->info[i]; 3098 u32 flags; 3099 3100 bacpy(&data.bdaddr, &info->bdaddr); 3101 data.pscan_rep_mode = info->pscan_rep_mode; 3102 data.pscan_period_mode = info->pscan_period_mode; 3103 data.pscan_mode = info->pscan_mode; 3104 memcpy(data.dev_class, info->dev_class, 3); 3105 data.clock_offset = info->clock_offset; 3106 data.rssi = HCI_RSSI_INVALID; 3107 data.ssp_mode = 0x00; 3108 3109 flags = hci_inquiry_cache_update(hdev, &data, false); 3110 3111 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3112 info->dev_class, HCI_RSSI_INVALID, 3113 flags, NULL, 0, NULL, 0, 0); 3114 } 3115 3116 hci_dev_unlock(hdev); 3117 } 3118 3119 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3120 struct sk_buff *skb) 3121 { 3122 struct hci_ev_conn_complete *ev = data; 3123 struct hci_conn *conn; 3124 u8 status = ev->status; 3125 3126 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3127 3128 hci_dev_lock(hdev); 3129 3130 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3131 if (!conn) { 3132 /* In case of error status and there is no connection pending 3133 * just unlock as there is nothing to cleanup. 3134 */ 3135 if (ev->status) 3136 goto unlock; 3137 3138 /* Connection may not exist if auto-connected. Check the bredr 3139 * allowlist to see if this device is allowed to auto connect. 3140 * If link is an ACL type, create a connection class 3141 * automatically. 3142 * 3143 * Auto-connect will only occur if the event filter is 3144 * programmed with a given address. Right now, event filter is 3145 * only used during suspend. 3146 */ 3147 if (ev->link_type == ACL_LINK && 3148 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3149 &ev->bdaddr, 3150 BDADDR_BREDR)) { 3151 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, 3152 HCI_ROLE_SLAVE); 3153 if (!conn) { 3154 bt_dev_err(hdev, "no memory for new conn"); 3155 goto unlock; 3156 } 3157 } else { 3158 if (ev->link_type != SCO_LINK) 3159 goto unlock; 3160 3161 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3162 &ev->bdaddr); 3163 if (!conn) 3164 goto unlock; 3165 3166 conn->type = SCO_LINK; 3167 } 3168 } 3169 3170 /* The HCI_Connection_Complete event is only sent once per connection. 3171 * Processing it more than once per connection can corrupt kernel memory. 3172 * 3173 * As the connection handle is set here for the first time, it indicates 3174 * whether the connection is already set up. 3175 */ 3176 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 3177 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3178 goto unlock; 3179 } 3180 3181 if (!status) { 3182 conn->handle = __le16_to_cpu(ev->handle); 3183 if (conn->handle > HCI_CONN_HANDLE_MAX) { 3184 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", 3185 conn->handle, HCI_CONN_HANDLE_MAX); 3186 status = HCI_ERROR_INVALID_PARAMETERS; 3187 goto done; 3188 } 3189 3190 if (conn->type == ACL_LINK) { 3191 conn->state = BT_CONFIG; 3192 hci_conn_hold(conn); 3193 3194 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3195 !hci_find_link_key(hdev, &ev->bdaddr)) 3196 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3197 else 3198 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3199 } else 3200 conn->state = BT_CONNECTED; 3201 3202 hci_debugfs_create_conn(conn); 3203 hci_conn_add_sysfs(conn); 3204 3205 if (test_bit(HCI_AUTH, &hdev->flags)) 3206 set_bit(HCI_CONN_AUTH, &conn->flags); 3207 3208 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3209 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3210 3211 /* Get remote features */ 3212 if (conn->type == ACL_LINK) { 3213 struct hci_cp_read_remote_features cp; 3214 cp.handle = ev->handle; 3215 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3216 sizeof(cp), &cp); 3217 3218 hci_update_scan(hdev); 3219 } 3220 3221 /* Set packet type for incoming connection */ 3222 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3223 struct hci_cp_change_conn_ptype cp; 3224 cp.handle = ev->handle; 3225 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3226 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3227 &cp); 3228 } 3229 } 3230 3231 if (conn->type == ACL_LINK) 3232 hci_sco_setup(conn, ev->status); 3233 3234 done: 3235 if (status) { 3236 hci_conn_failed(conn, status); 3237 } else if (ev->link_type == SCO_LINK) { 3238 switch (conn->setting & SCO_AIRMODE_MASK) { 3239 case SCO_AIRMODE_CVSD: 3240 if (hdev->notify) 3241 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3242 break; 3243 } 3244 3245 hci_connect_cfm(conn, status); 3246 } 3247 3248 unlock: 3249 hci_dev_unlock(hdev); 3250 3251 hci_conn_check_pending(hdev); 3252 } 3253 3254 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3255 { 3256 struct hci_cp_reject_conn_req cp; 3257 3258 bacpy(&cp.bdaddr, bdaddr); 3259 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3260 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3261 } 3262 3263 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3264 struct sk_buff *skb) 3265 { 3266 struct hci_ev_conn_request *ev = data; 3267 int mask = hdev->link_mode; 3268 struct inquiry_entry *ie; 3269 struct hci_conn *conn; 3270 __u8 flags = 0; 3271 3272 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3273 3274 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3275 &flags); 3276 3277 if (!(mask & HCI_LM_ACCEPT)) { 3278 hci_reject_conn(hdev, &ev->bdaddr); 3279 return; 3280 } 3281 3282 hci_dev_lock(hdev); 3283 3284 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3285 BDADDR_BREDR)) { 3286 hci_reject_conn(hdev, &ev->bdaddr); 3287 goto unlock; 3288 } 3289 3290 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3291 * connection. These features are only touched through mgmt so 3292 * only do the checks if HCI_MGMT is set. 3293 */ 3294 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3295 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3296 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3297 BDADDR_BREDR)) { 3298 hci_reject_conn(hdev, &ev->bdaddr); 3299 goto unlock; 3300 } 3301 3302 /* Connection accepted */ 3303 3304 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3305 if (ie) 3306 memcpy(ie->data.dev_class, ev->dev_class, 3); 3307 3308 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3309 &ev->bdaddr); 3310 if (!conn) { 3311 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, 3312 HCI_ROLE_SLAVE); 3313 if (!conn) { 3314 bt_dev_err(hdev, "no memory for new connection"); 3315 goto unlock; 3316 } 3317 } 3318 3319 memcpy(conn->dev_class, ev->dev_class, 3); 3320 3321 hci_dev_unlock(hdev); 3322 3323 if (ev->link_type == ACL_LINK || 3324 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3325 struct hci_cp_accept_conn_req cp; 3326 conn->state = BT_CONNECT; 3327 3328 bacpy(&cp.bdaddr, &ev->bdaddr); 3329 3330 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3331 cp.role = 0x00; /* Become central */ 3332 else 3333 cp.role = 0x01; /* Remain peripheral */ 3334 3335 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3336 } else if (!(flags & HCI_PROTO_DEFER)) { 3337 struct hci_cp_accept_sync_conn_req cp; 3338 conn->state = BT_CONNECT; 3339 3340 bacpy(&cp.bdaddr, &ev->bdaddr); 3341 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3342 3343 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3344 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3345 cp.max_latency = cpu_to_le16(0xffff); 3346 cp.content_format = cpu_to_le16(hdev->voice_setting); 3347 cp.retrans_effort = 0xff; 3348 3349 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3350 &cp); 3351 } else { 3352 conn->state = BT_CONNECT2; 3353 hci_connect_cfm(conn, 0); 3354 } 3355 3356 return; 3357 unlock: 3358 hci_dev_unlock(hdev); 3359 } 3360 3361 static u8 hci_to_mgmt_reason(u8 err) 3362 { 3363 switch (err) { 3364 case HCI_ERROR_CONNECTION_TIMEOUT: 3365 return MGMT_DEV_DISCONN_TIMEOUT; 3366 case HCI_ERROR_REMOTE_USER_TERM: 3367 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3368 case HCI_ERROR_REMOTE_POWER_OFF: 3369 return MGMT_DEV_DISCONN_REMOTE; 3370 case HCI_ERROR_LOCAL_HOST_TERM: 3371 return MGMT_DEV_DISCONN_LOCAL_HOST; 3372 default: 3373 return MGMT_DEV_DISCONN_UNKNOWN; 3374 } 3375 } 3376 3377 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3378 struct sk_buff *skb) 3379 { 3380 struct hci_ev_disconn_complete *ev = data; 3381 u8 reason; 3382 struct hci_conn_params *params; 3383 struct hci_conn *conn; 3384 bool mgmt_connected; 3385 3386 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3387 3388 hci_dev_lock(hdev); 3389 3390 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3391 if (!conn) 3392 goto unlock; 3393 3394 if (ev->status) { 3395 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3396 conn->dst_type, ev->status); 3397 goto unlock; 3398 } 3399 3400 conn->state = BT_CLOSED; 3401 3402 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3403 3404 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3405 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3406 else 3407 reason = hci_to_mgmt_reason(ev->reason); 3408 3409 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3410 reason, mgmt_connected); 3411 3412 if (conn->type == ACL_LINK) { 3413 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3414 hci_remove_link_key(hdev, &conn->dst); 3415 3416 hci_update_scan(hdev); 3417 } 3418 3419 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 3420 if (params) { 3421 switch (params->auto_connect) { 3422 case HCI_AUTO_CONN_LINK_LOSS: 3423 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3424 break; 3425 fallthrough; 3426 3427 case HCI_AUTO_CONN_DIRECT: 3428 case HCI_AUTO_CONN_ALWAYS: 3429 hci_pend_le_list_del_init(params); 3430 hci_pend_le_list_add(params, &hdev->pend_le_conns); 3431 hci_update_passive_scan(hdev); 3432 break; 3433 3434 default: 3435 break; 3436 } 3437 } 3438 3439 hci_disconn_cfm(conn, ev->reason); 3440 3441 /* Re-enable advertising if necessary, since it might 3442 * have been disabled by the connection. From the 3443 * HCI_LE_Set_Advertise_Enable command description in 3444 * the core specification (v4.0): 3445 * "The Controller shall continue advertising until the Host 3446 * issues an LE_Set_Advertise_Enable command with 3447 * Advertising_Enable set to 0x00 (Advertising is disabled) 3448 * or until a connection is created or until the Advertising 3449 * is timed out due to Directed Advertising." 3450 */ 3451 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3452 hdev->cur_adv_instance = conn->adv_instance; 3453 hci_enable_advertising(hdev); 3454 } 3455 3456 hci_conn_del(conn); 3457 3458 unlock: 3459 hci_dev_unlock(hdev); 3460 } 3461 3462 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3463 struct sk_buff *skb) 3464 { 3465 struct hci_ev_auth_complete *ev = data; 3466 struct hci_conn *conn; 3467 3468 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3469 3470 hci_dev_lock(hdev); 3471 3472 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3473 if (!conn) 3474 goto unlock; 3475 3476 if (!ev->status) { 3477 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3478 3479 if (!hci_conn_ssp_enabled(conn) && 3480 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) { 3481 bt_dev_info(hdev, "re-auth of legacy device is not possible."); 3482 } else { 3483 set_bit(HCI_CONN_AUTH, &conn->flags); 3484 conn->sec_level = conn->pending_sec_level; 3485 } 3486 } else { 3487 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3488 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3489 3490 mgmt_auth_failed(conn, ev->status); 3491 } 3492 3493 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3494 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags); 3495 3496 if (conn->state == BT_CONFIG) { 3497 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3498 struct hci_cp_set_conn_encrypt cp; 3499 cp.handle = ev->handle; 3500 cp.encrypt = 0x01; 3501 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3502 &cp); 3503 } else { 3504 conn->state = BT_CONNECTED; 3505 hci_connect_cfm(conn, ev->status); 3506 hci_conn_drop(conn); 3507 } 3508 } else { 3509 hci_auth_cfm(conn, ev->status); 3510 3511 hci_conn_hold(conn); 3512 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3513 hci_conn_drop(conn); 3514 } 3515 3516 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3517 if (!ev->status) { 3518 struct hci_cp_set_conn_encrypt cp; 3519 cp.handle = ev->handle; 3520 cp.encrypt = 0x01; 3521 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3522 &cp); 3523 } else { 3524 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3525 hci_encrypt_cfm(conn, ev->status); 3526 } 3527 } 3528 3529 unlock: 3530 hci_dev_unlock(hdev); 3531 } 3532 3533 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3534 struct sk_buff *skb) 3535 { 3536 struct hci_ev_remote_name *ev = data; 3537 struct hci_conn *conn; 3538 3539 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3540 3541 hci_conn_check_pending(hdev); 3542 3543 hci_dev_lock(hdev); 3544 3545 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3546 3547 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3548 goto check_auth; 3549 3550 if (ev->status == 0) 3551 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3552 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3553 else 3554 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3555 3556 check_auth: 3557 if (!conn) 3558 goto unlock; 3559 3560 if (!hci_outgoing_auth_needed(hdev, conn)) 3561 goto unlock; 3562 3563 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3564 struct hci_cp_auth_requested cp; 3565 3566 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3567 3568 cp.handle = __cpu_to_le16(conn->handle); 3569 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3570 } 3571 3572 unlock: 3573 hci_dev_unlock(hdev); 3574 } 3575 3576 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3577 struct sk_buff *skb) 3578 { 3579 struct hci_ev_encrypt_change *ev = data; 3580 struct hci_conn *conn; 3581 3582 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3583 3584 hci_dev_lock(hdev); 3585 3586 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3587 if (!conn) 3588 goto unlock; 3589 3590 if (!ev->status) { 3591 if (ev->encrypt) { 3592 /* Encryption implies authentication */ 3593 set_bit(HCI_CONN_AUTH, &conn->flags); 3594 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3595 conn->sec_level = conn->pending_sec_level; 3596 3597 /* P-256 authentication key implies FIPS */ 3598 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3599 set_bit(HCI_CONN_FIPS, &conn->flags); 3600 3601 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3602 conn->type == LE_LINK) 3603 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3604 } else { 3605 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3606 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3607 } 3608 } 3609 3610 /* We should disregard the current RPA and generate a new one 3611 * whenever the encryption procedure fails. 3612 */ 3613 if (ev->status && conn->type == LE_LINK) { 3614 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3615 hci_adv_instances_set_rpa_expired(hdev, true); 3616 } 3617 3618 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3619 3620 /* Check link security requirements are met */ 3621 if (!hci_conn_check_link_mode(conn)) 3622 ev->status = HCI_ERROR_AUTH_FAILURE; 3623 3624 if (ev->status && conn->state == BT_CONNECTED) { 3625 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3626 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3627 3628 /* Notify upper layers so they can cleanup before 3629 * disconnecting. 3630 */ 3631 hci_encrypt_cfm(conn, ev->status); 3632 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3633 hci_conn_drop(conn); 3634 goto unlock; 3635 } 3636 3637 /* Try reading the encryption key size for encrypted ACL links */ 3638 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3639 struct hci_cp_read_enc_key_size cp; 3640 3641 /* Only send HCI_Read_Encryption_Key_Size if the 3642 * controller really supports it. If it doesn't, assume 3643 * the default size (16). 3644 */ 3645 if (!(hdev->commands[20] & 0x10)) { 3646 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3647 goto notify; 3648 } 3649 3650 cp.handle = cpu_to_le16(conn->handle); 3651 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3652 sizeof(cp), &cp)) { 3653 bt_dev_err(hdev, "sending read key size failed"); 3654 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3655 goto notify; 3656 } 3657 3658 goto unlock; 3659 } 3660 3661 /* Set the default Authenticated Payload Timeout after 3662 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3663 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3664 * sent when the link is active and Encryption is enabled, the conn 3665 * type can be either LE or ACL and controller must support LMP Ping. 3666 * Ensure for AES-CCM encryption as well. 3667 */ 3668 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3669 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3670 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3671 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3672 struct hci_cp_write_auth_payload_to cp; 3673 3674 cp.handle = cpu_to_le16(conn->handle); 3675 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3676 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3677 sizeof(cp), &cp)) { 3678 bt_dev_err(hdev, "write auth payload timeout failed"); 3679 goto notify; 3680 } 3681 3682 goto unlock; 3683 } 3684 3685 notify: 3686 hci_encrypt_cfm(conn, ev->status); 3687 3688 unlock: 3689 hci_dev_unlock(hdev); 3690 } 3691 3692 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3693 struct sk_buff *skb) 3694 { 3695 struct hci_ev_change_link_key_complete *ev = data; 3696 struct hci_conn *conn; 3697 3698 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3699 3700 hci_dev_lock(hdev); 3701 3702 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3703 if (conn) { 3704 if (!ev->status) 3705 set_bit(HCI_CONN_SECURE, &conn->flags); 3706 3707 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3708 3709 hci_key_change_cfm(conn, ev->status); 3710 } 3711 3712 hci_dev_unlock(hdev); 3713 } 3714 3715 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3716 struct sk_buff *skb) 3717 { 3718 struct hci_ev_remote_features *ev = data; 3719 struct hci_conn *conn; 3720 3721 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3722 3723 hci_dev_lock(hdev); 3724 3725 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3726 if (!conn) 3727 goto unlock; 3728 3729 if (!ev->status) 3730 memcpy(conn->features[0], ev->features, 8); 3731 3732 if (conn->state != BT_CONFIG) 3733 goto unlock; 3734 3735 if (!ev->status && lmp_ext_feat_capable(hdev) && 3736 lmp_ext_feat_capable(conn)) { 3737 struct hci_cp_read_remote_ext_features cp; 3738 cp.handle = ev->handle; 3739 cp.page = 0x01; 3740 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3741 sizeof(cp), &cp); 3742 goto unlock; 3743 } 3744 3745 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 3746 struct hci_cp_remote_name_req cp; 3747 memset(&cp, 0, sizeof(cp)); 3748 bacpy(&cp.bdaddr, &conn->dst); 3749 cp.pscan_rep_mode = 0x02; 3750 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3751 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 3752 mgmt_device_connected(hdev, conn, NULL, 0); 3753 3754 if (!hci_outgoing_auth_needed(hdev, conn)) { 3755 conn->state = BT_CONNECTED; 3756 hci_connect_cfm(conn, ev->status); 3757 hci_conn_drop(conn); 3758 } 3759 3760 unlock: 3761 hci_dev_unlock(hdev); 3762 } 3763 3764 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3765 { 3766 cancel_delayed_work(&hdev->cmd_timer); 3767 3768 rcu_read_lock(); 3769 if (!test_bit(HCI_RESET, &hdev->flags)) { 3770 if (ncmd) { 3771 cancel_delayed_work(&hdev->ncmd_timer); 3772 atomic_set(&hdev->cmd_cnt, 1); 3773 } else { 3774 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3775 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3776 HCI_NCMD_TIMEOUT); 3777 } 3778 } 3779 rcu_read_unlock(); 3780 } 3781 3782 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3783 struct sk_buff *skb) 3784 { 3785 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3786 3787 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3788 3789 if (rp->status) 3790 return rp->status; 3791 3792 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3793 hdev->le_pkts = rp->acl_max_pkt; 3794 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3795 hdev->iso_pkts = rp->iso_max_pkt; 3796 3797 hdev->le_cnt = hdev->le_pkts; 3798 hdev->iso_cnt = hdev->iso_pkts; 3799 3800 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3801 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3802 3803 return rp->status; 3804 } 3805 3806 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3807 struct sk_buff *skb) 3808 { 3809 struct hci_rp_le_set_cig_params *rp = data; 3810 struct hci_cp_le_set_cig_params *cp; 3811 struct hci_conn *conn; 3812 u8 status = rp->status; 3813 int i; 3814 3815 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3816 3817 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3818 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3819 rp->cig_id != cp->cig_id)) { 3820 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3821 status = HCI_ERROR_UNSPECIFIED; 3822 } 3823 3824 hci_dev_lock(hdev); 3825 3826 if (status) { 3827 while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) { 3828 conn->state = BT_CLOSED; 3829 hci_connect_cfm(conn, status); 3830 hci_conn_del(conn); 3831 } 3832 goto unlock; 3833 } 3834 3835 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3836 * 3837 * If the Status return parameter is zero, then the Controller shall 3838 * set the Connection_Handle arrayed return parameter to the connection 3839 * handle(s) corresponding to the CIS configurations specified in 3840 * the CIS_IDs command parameter, in the same order. 3841 */ 3842 for (i = 0; i < rp->num_handles; ++i) { 3843 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3844 cp->cis[i].cis_id); 3845 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3846 continue; 3847 3848 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3849 continue; 3850 3851 conn->handle = __le16_to_cpu(rp->handle[i]); 3852 3853 bt_dev_dbg(hdev, "%p handle 0x%4.4x parent %p", conn, 3854 conn->handle, conn->parent); 3855 3856 /* Create CIS if LE is already connected */ 3857 if (conn->parent && conn->parent->state == BT_CONNECTED) 3858 hci_le_create_cis(conn); 3859 } 3860 3861 unlock: 3862 hci_dev_unlock(hdev); 3863 3864 return rp->status; 3865 } 3866 3867 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3868 struct sk_buff *skb) 3869 { 3870 struct hci_rp_le_setup_iso_path *rp = data; 3871 struct hci_cp_le_setup_iso_path *cp; 3872 struct hci_conn *conn; 3873 3874 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3875 3876 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3877 if (!cp) 3878 return rp->status; 3879 3880 hci_dev_lock(hdev); 3881 3882 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3883 if (!conn) 3884 goto unlock; 3885 3886 if (rp->status) { 3887 hci_connect_cfm(conn, rp->status); 3888 hci_conn_del(conn); 3889 goto unlock; 3890 } 3891 3892 switch (cp->direction) { 3893 /* Input (Host to Controller) */ 3894 case 0x00: 3895 /* Only confirm connection if output only */ 3896 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3897 hci_connect_cfm(conn, rp->status); 3898 break; 3899 /* Output (Controller to Host) */ 3900 case 0x01: 3901 /* Confirm connection since conn->iso_qos is always configured 3902 * last. 3903 */ 3904 hci_connect_cfm(conn, rp->status); 3905 break; 3906 } 3907 3908 unlock: 3909 hci_dev_unlock(hdev); 3910 return rp->status; 3911 } 3912 3913 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3914 { 3915 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3916 } 3917 3918 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3919 struct sk_buff *skb) 3920 { 3921 struct hci_ev_status *rp = data; 3922 struct hci_cp_le_set_per_adv_params *cp; 3923 3924 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3925 3926 if (rp->status) 3927 return rp->status; 3928 3929 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3930 if (!cp) 3931 return rp->status; 3932 3933 /* TODO: set the conn state */ 3934 return rp->status; 3935 } 3936 3937 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3938 struct sk_buff *skb) 3939 { 3940 struct hci_ev_status *rp = data; 3941 __u8 *sent; 3942 3943 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3944 3945 if (rp->status) 3946 return rp->status; 3947 3948 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3949 if (!sent) 3950 return rp->status; 3951 3952 hci_dev_lock(hdev); 3953 3954 if (*sent) 3955 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3956 else 3957 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3958 3959 hci_dev_unlock(hdev); 3960 3961 return rp->status; 3962 } 3963 3964 #define HCI_CC_VL(_op, _func, _min, _max) \ 3965 { \ 3966 .op = _op, \ 3967 .func = _func, \ 3968 .min_len = _min, \ 3969 .max_len = _max, \ 3970 } 3971 3972 #define HCI_CC(_op, _func, _len) \ 3973 HCI_CC_VL(_op, _func, _len, _len) 3974 3975 #define HCI_CC_STATUS(_op, _func) \ 3976 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 3977 3978 static const struct hci_cc { 3979 u16 op; 3980 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 3981 u16 min_len; 3982 u16 max_len; 3983 } hci_cc_table[] = { 3984 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 3985 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 3986 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 3987 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 3988 hci_cc_remote_name_req_cancel), 3989 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 3990 sizeof(struct hci_rp_role_discovery)), 3991 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 3992 sizeof(struct hci_rp_read_link_policy)), 3993 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 3994 sizeof(struct hci_rp_write_link_policy)), 3995 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 3996 sizeof(struct hci_rp_read_def_link_policy)), 3997 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 3998 hci_cc_write_def_link_policy), 3999 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4000 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4001 sizeof(struct hci_rp_read_stored_link_key)), 4002 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4003 sizeof(struct hci_rp_delete_stored_link_key)), 4004 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4005 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4006 sizeof(struct hci_rp_read_local_name)), 4007 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4008 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4009 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4010 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4011 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4012 sizeof(struct hci_rp_read_class_of_dev)), 4013 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4014 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4015 sizeof(struct hci_rp_read_voice_setting)), 4016 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4017 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4018 sizeof(struct hci_rp_read_num_supported_iac)), 4019 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4020 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4021 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4022 sizeof(struct hci_rp_read_auth_payload_to)), 4023 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4024 sizeof(struct hci_rp_write_auth_payload_to)), 4025 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4026 sizeof(struct hci_rp_read_local_version)), 4027 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4028 sizeof(struct hci_rp_read_local_commands)), 4029 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4030 sizeof(struct hci_rp_read_local_features)), 4031 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4032 sizeof(struct hci_rp_read_local_ext_features)), 4033 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4034 sizeof(struct hci_rp_read_buffer_size)), 4035 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4036 sizeof(struct hci_rp_read_bd_addr)), 4037 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4038 sizeof(struct hci_rp_read_local_pairing_opts)), 4039 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4040 sizeof(struct hci_rp_read_page_scan_activity)), 4041 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4042 hci_cc_write_page_scan_activity), 4043 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4044 sizeof(struct hci_rp_read_page_scan_type)), 4045 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4046 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size, 4047 sizeof(struct hci_rp_read_data_block_size)), 4048 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode, 4049 sizeof(struct hci_rp_read_flow_control_mode)), 4050 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info, 4051 sizeof(struct hci_rp_read_local_amp_info)), 4052 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4053 sizeof(struct hci_rp_read_clock)), 4054 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4055 sizeof(struct hci_rp_read_enc_key_size)), 4056 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4057 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4058 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4059 hci_cc_read_def_err_data_reporting, 4060 sizeof(struct hci_rp_read_def_err_data_reporting)), 4061 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4062 hci_cc_write_def_err_data_reporting), 4063 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4064 sizeof(struct hci_rp_pin_code_reply)), 4065 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4066 sizeof(struct hci_rp_pin_code_neg_reply)), 4067 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4068 sizeof(struct hci_rp_read_local_oob_data)), 4069 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4070 sizeof(struct hci_rp_read_local_oob_ext_data)), 4071 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4072 sizeof(struct hci_rp_le_read_buffer_size)), 4073 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4074 sizeof(struct hci_rp_le_read_local_features)), 4075 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4076 sizeof(struct hci_rp_le_read_adv_tx_power)), 4077 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4078 sizeof(struct hci_rp_user_confirm_reply)), 4079 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4080 sizeof(struct hci_rp_user_confirm_reply)), 4081 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4082 sizeof(struct hci_rp_user_confirm_reply)), 4083 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4084 sizeof(struct hci_rp_user_confirm_reply)), 4085 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4086 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4087 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4088 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4089 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4090 hci_cc_le_read_accept_list_size, 4091 sizeof(struct hci_rp_le_read_accept_list_size)), 4092 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4093 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4094 hci_cc_le_add_to_accept_list), 4095 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4096 hci_cc_le_del_from_accept_list), 4097 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4098 sizeof(struct hci_rp_le_read_supported_states)), 4099 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4100 sizeof(struct hci_rp_le_read_def_data_len)), 4101 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4102 hci_cc_le_write_def_data_len), 4103 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4104 hci_cc_le_add_to_resolv_list), 4105 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4106 hci_cc_le_del_from_resolv_list), 4107 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4108 hci_cc_le_clear_resolv_list), 4109 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4110 sizeof(struct hci_rp_le_read_resolv_list_size)), 4111 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4112 hci_cc_le_set_addr_resolution_enable), 4113 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4114 sizeof(struct hci_rp_le_read_max_data_len)), 4115 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4116 hci_cc_write_le_host_supported), 4117 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4118 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4119 sizeof(struct hci_rp_read_rssi)), 4120 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4121 sizeof(struct hci_rp_read_tx_power)), 4122 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4123 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4124 hci_cc_le_set_ext_scan_param), 4125 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4126 hci_cc_le_set_ext_scan_enable), 4127 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4128 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4129 hci_cc_le_read_num_adv_sets, 4130 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4131 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4132 sizeof(struct hci_rp_le_set_ext_adv_params)), 4133 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4134 hci_cc_le_set_ext_adv_enable), 4135 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4136 hci_cc_le_set_adv_set_random_addr), 4137 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4138 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4139 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4140 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4141 hci_cc_le_set_per_adv_enable), 4142 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4143 sizeof(struct hci_rp_le_read_transmit_power)), 4144 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4145 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4146 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4147 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4148 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4149 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4150 sizeof(struct hci_rp_le_setup_iso_path)), 4151 }; 4152 4153 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4154 struct sk_buff *skb) 4155 { 4156 void *data; 4157 4158 if (skb->len < cc->min_len) { 4159 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4160 cc->op, skb->len, cc->min_len); 4161 return HCI_ERROR_UNSPECIFIED; 4162 } 4163 4164 /* Just warn if the length is over max_len size it still be possible to 4165 * partially parse the cc so leave to callback to decide if that is 4166 * acceptable. 4167 */ 4168 if (skb->len > cc->max_len) 4169 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4170 cc->op, skb->len, cc->max_len); 4171 4172 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4173 if (!data) 4174 return HCI_ERROR_UNSPECIFIED; 4175 4176 return cc->func(hdev, data, skb); 4177 } 4178 4179 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4180 struct sk_buff *skb, u16 *opcode, u8 *status, 4181 hci_req_complete_t *req_complete, 4182 hci_req_complete_skb_t *req_complete_skb) 4183 { 4184 struct hci_ev_cmd_complete *ev = data; 4185 int i; 4186 4187 *opcode = __le16_to_cpu(ev->opcode); 4188 4189 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4190 4191 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4192 if (hci_cc_table[i].op == *opcode) { 4193 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4194 break; 4195 } 4196 } 4197 4198 if (i == ARRAY_SIZE(hci_cc_table)) { 4199 /* Unknown opcode, assume byte 0 contains the status, so 4200 * that e.g. __hci_cmd_sync() properly returns errors 4201 * for vendor specific commands send by HCI drivers. 4202 * If a vendor doesn't actually follow this convention we may 4203 * need to introduce a vendor CC table in order to properly set 4204 * the status. 4205 */ 4206 *status = skb->data[0]; 4207 } 4208 4209 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4210 4211 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4212 req_complete_skb); 4213 4214 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4215 bt_dev_err(hdev, 4216 "unexpected event for opcode 0x%4.4x", *opcode); 4217 return; 4218 } 4219 4220 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4221 queue_work(hdev->workqueue, &hdev->cmd_work); 4222 } 4223 4224 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4225 { 4226 struct hci_cp_le_create_cis *cp; 4227 int i; 4228 4229 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4230 4231 if (!status) 4232 return; 4233 4234 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4235 if (!cp) 4236 return; 4237 4238 hci_dev_lock(hdev); 4239 4240 /* Remove connection if command failed */ 4241 for (i = 0; cp->num_cis; cp->num_cis--, i++) { 4242 struct hci_conn *conn; 4243 u16 handle; 4244 4245 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4246 4247 conn = hci_conn_hash_lookup_handle(hdev, handle); 4248 if (conn) { 4249 conn->state = BT_CLOSED; 4250 hci_connect_cfm(conn, status); 4251 hci_conn_del(conn); 4252 } 4253 } 4254 4255 hci_dev_unlock(hdev); 4256 } 4257 4258 #define HCI_CS(_op, _func) \ 4259 { \ 4260 .op = _op, \ 4261 .func = _func, \ 4262 } 4263 4264 static const struct hci_cs { 4265 u16 op; 4266 void (*func)(struct hci_dev *hdev, __u8 status); 4267 } hci_cs_table[] = { 4268 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4269 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4270 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4271 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4272 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4273 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4274 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4275 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4276 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4277 hci_cs_read_remote_ext_features), 4278 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4279 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4280 hci_cs_enhanced_setup_sync_conn), 4281 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4282 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4283 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4284 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4285 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4286 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4287 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4288 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4289 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4290 }; 4291 4292 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4293 struct sk_buff *skb, u16 *opcode, u8 *status, 4294 hci_req_complete_t *req_complete, 4295 hci_req_complete_skb_t *req_complete_skb) 4296 { 4297 struct hci_ev_cmd_status *ev = data; 4298 int i; 4299 4300 *opcode = __le16_to_cpu(ev->opcode); 4301 *status = ev->status; 4302 4303 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4304 4305 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4306 if (hci_cs_table[i].op == *opcode) { 4307 hci_cs_table[i].func(hdev, ev->status); 4308 break; 4309 } 4310 } 4311 4312 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4313 4314 /* Indicate request completion if the command failed. Also, if 4315 * we're not waiting for a special event and we get a success 4316 * command status we should try to flag the request as completed 4317 * (since for this kind of commands there will not be a command 4318 * complete event). 4319 */ 4320 if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) { 4321 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4322 req_complete_skb); 4323 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4324 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4325 *opcode); 4326 return; 4327 } 4328 } 4329 4330 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4331 queue_work(hdev->workqueue, &hdev->cmd_work); 4332 } 4333 4334 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4335 struct sk_buff *skb) 4336 { 4337 struct hci_ev_hardware_error *ev = data; 4338 4339 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4340 4341 hdev->hw_error_code = ev->code; 4342 4343 queue_work(hdev->req_workqueue, &hdev->error_reset); 4344 } 4345 4346 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4347 struct sk_buff *skb) 4348 { 4349 struct hci_ev_role_change *ev = data; 4350 struct hci_conn *conn; 4351 4352 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4353 4354 hci_dev_lock(hdev); 4355 4356 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4357 if (conn) { 4358 if (!ev->status) 4359 conn->role = ev->role; 4360 4361 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4362 4363 hci_role_switch_cfm(conn, ev->status, ev->role); 4364 } 4365 4366 hci_dev_unlock(hdev); 4367 } 4368 4369 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4370 struct sk_buff *skb) 4371 { 4372 struct hci_ev_num_comp_pkts *ev = data; 4373 int i; 4374 4375 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4376 flex_array_size(ev, handles, ev->num))) 4377 return; 4378 4379 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) { 4380 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode); 4381 return; 4382 } 4383 4384 bt_dev_dbg(hdev, "num %d", ev->num); 4385 4386 for (i = 0; i < ev->num; i++) { 4387 struct hci_comp_pkts_info *info = &ev->handles[i]; 4388 struct hci_conn *conn; 4389 __u16 handle, count; 4390 4391 handle = __le16_to_cpu(info->handle); 4392 count = __le16_to_cpu(info->count); 4393 4394 conn = hci_conn_hash_lookup_handle(hdev, handle); 4395 if (!conn) 4396 continue; 4397 4398 conn->sent -= count; 4399 4400 switch (conn->type) { 4401 case ACL_LINK: 4402 hdev->acl_cnt += count; 4403 if (hdev->acl_cnt > hdev->acl_pkts) 4404 hdev->acl_cnt = hdev->acl_pkts; 4405 break; 4406 4407 case LE_LINK: 4408 if (hdev->le_pkts) { 4409 hdev->le_cnt += count; 4410 if (hdev->le_cnt > hdev->le_pkts) 4411 hdev->le_cnt = hdev->le_pkts; 4412 } else { 4413 hdev->acl_cnt += count; 4414 if (hdev->acl_cnt > hdev->acl_pkts) 4415 hdev->acl_cnt = hdev->acl_pkts; 4416 } 4417 break; 4418 4419 case SCO_LINK: 4420 hdev->sco_cnt += count; 4421 if (hdev->sco_cnt > hdev->sco_pkts) 4422 hdev->sco_cnt = hdev->sco_pkts; 4423 break; 4424 4425 case ISO_LINK: 4426 if (hdev->iso_pkts) { 4427 hdev->iso_cnt += count; 4428 if (hdev->iso_cnt > hdev->iso_pkts) 4429 hdev->iso_cnt = hdev->iso_pkts; 4430 } else if (hdev->le_pkts) { 4431 hdev->le_cnt += count; 4432 if (hdev->le_cnt > hdev->le_pkts) 4433 hdev->le_cnt = hdev->le_pkts; 4434 } else { 4435 hdev->acl_cnt += count; 4436 if (hdev->acl_cnt > hdev->acl_pkts) 4437 hdev->acl_cnt = hdev->acl_pkts; 4438 } 4439 break; 4440 4441 default: 4442 bt_dev_err(hdev, "unknown type %d conn %p", 4443 conn->type, conn); 4444 break; 4445 } 4446 } 4447 4448 queue_work(hdev->workqueue, &hdev->tx_work); 4449 } 4450 4451 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev, 4452 __u16 handle) 4453 { 4454 struct hci_chan *chan; 4455 4456 switch (hdev->dev_type) { 4457 case HCI_PRIMARY: 4458 return hci_conn_hash_lookup_handle(hdev, handle); 4459 case HCI_AMP: 4460 chan = hci_chan_lookup_handle(hdev, handle); 4461 if (chan) 4462 return chan->conn; 4463 break; 4464 default: 4465 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); 4466 break; 4467 } 4468 4469 return NULL; 4470 } 4471 4472 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data, 4473 struct sk_buff *skb) 4474 { 4475 struct hci_ev_num_comp_blocks *ev = data; 4476 int i; 4477 4478 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS, 4479 flex_array_size(ev, handles, ev->num_hndl))) 4480 return; 4481 4482 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) { 4483 bt_dev_err(hdev, "wrong event for mode %d", 4484 hdev->flow_ctl_mode); 4485 return; 4486 } 4487 4488 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks, 4489 ev->num_hndl); 4490 4491 for (i = 0; i < ev->num_hndl; i++) { 4492 struct hci_comp_blocks_info *info = &ev->handles[i]; 4493 struct hci_conn *conn = NULL; 4494 __u16 handle, block_count; 4495 4496 handle = __le16_to_cpu(info->handle); 4497 block_count = __le16_to_cpu(info->blocks); 4498 4499 conn = __hci_conn_lookup_handle(hdev, handle); 4500 if (!conn) 4501 continue; 4502 4503 conn->sent -= block_count; 4504 4505 switch (conn->type) { 4506 case ACL_LINK: 4507 case AMP_LINK: 4508 hdev->block_cnt += block_count; 4509 if (hdev->block_cnt > hdev->num_blocks) 4510 hdev->block_cnt = hdev->num_blocks; 4511 break; 4512 4513 default: 4514 bt_dev_err(hdev, "unknown type %d conn %p", 4515 conn->type, conn); 4516 break; 4517 } 4518 } 4519 4520 queue_work(hdev->workqueue, &hdev->tx_work); 4521 } 4522 4523 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4524 struct sk_buff *skb) 4525 { 4526 struct hci_ev_mode_change *ev = data; 4527 struct hci_conn *conn; 4528 4529 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4530 4531 hci_dev_lock(hdev); 4532 4533 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4534 if (conn) { 4535 conn->mode = ev->mode; 4536 4537 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4538 &conn->flags)) { 4539 if (conn->mode == HCI_CM_ACTIVE) 4540 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4541 else 4542 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4543 } 4544 4545 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4546 hci_sco_setup(conn, ev->status); 4547 } 4548 4549 hci_dev_unlock(hdev); 4550 } 4551 4552 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4553 struct sk_buff *skb) 4554 { 4555 struct hci_ev_pin_code_req *ev = data; 4556 struct hci_conn *conn; 4557 4558 bt_dev_dbg(hdev, ""); 4559 4560 hci_dev_lock(hdev); 4561 4562 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4563 if (!conn) 4564 goto unlock; 4565 4566 if (conn->state == BT_CONNECTED) { 4567 hci_conn_hold(conn); 4568 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4569 hci_conn_drop(conn); 4570 } 4571 4572 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4573 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4574 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4575 sizeof(ev->bdaddr), &ev->bdaddr); 4576 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4577 u8 secure; 4578 4579 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4580 secure = 1; 4581 else 4582 secure = 0; 4583 4584 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4585 } 4586 4587 unlock: 4588 hci_dev_unlock(hdev); 4589 } 4590 4591 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4592 { 4593 if (key_type == HCI_LK_CHANGED_COMBINATION) 4594 return; 4595 4596 conn->pin_length = pin_len; 4597 conn->key_type = key_type; 4598 4599 switch (key_type) { 4600 case HCI_LK_LOCAL_UNIT: 4601 case HCI_LK_REMOTE_UNIT: 4602 case HCI_LK_DEBUG_COMBINATION: 4603 return; 4604 case HCI_LK_COMBINATION: 4605 if (pin_len == 16) 4606 conn->pending_sec_level = BT_SECURITY_HIGH; 4607 else 4608 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4609 break; 4610 case HCI_LK_UNAUTH_COMBINATION_P192: 4611 case HCI_LK_UNAUTH_COMBINATION_P256: 4612 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4613 break; 4614 case HCI_LK_AUTH_COMBINATION_P192: 4615 conn->pending_sec_level = BT_SECURITY_HIGH; 4616 break; 4617 case HCI_LK_AUTH_COMBINATION_P256: 4618 conn->pending_sec_level = BT_SECURITY_FIPS; 4619 break; 4620 } 4621 } 4622 4623 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4624 struct sk_buff *skb) 4625 { 4626 struct hci_ev_link_key_req *ev = data; 4627 struct hci_cp_link_key_reply cp; 4628 struct hci_conn *conn; 4629 struct link_key *key; 4630 4631 bt_dev_dbg(hdev, ""); 4632 4633 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4634 return; 4635 4636 hci_dev_lock(hdev); 4637 4638 key = hci_find_link_key(hdev, &ev->bdaddr); 4639 if (!key) { 4640 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4641 goto not_found; 4642 } 4643 4644 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4645 4646 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4647 if (conn) { 4648 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4649 4650 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4651 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4652 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4653 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4654 goto not_found; 4655 } 4656 4657 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4658 (conn->pending_sec_level == BT_SECURITY_HIGH || 4659 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4660 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4661 goto not_found; 4662 } 4663 4664 conn_set_key(conn, key->type, key->pin_len); 4665 } 4666 4667 bacpy(&cp.bdaddr, &ev->bdaddr); 4668 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4669 4670 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4671 4672 hci_dev_unlock(hdev); 4673 4674 return; 4675 4676 not_found: 4677 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4678 hci_dev_unlock(hdev); 4679 } 4680 4681 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4682 struct sk_buff *skb) 4683 { 4684 struct hci_ev_link_key_notify *ev = data; 4685 struct hci_conn *conn; 4686 struct link_key *key; 4687 bool persistent; 4688 u8 pin_len = 0; 4689 4690 bt_dev_dbg(hdev, ""); 4691 4692 hci_dev_lock(hdev); 4693 4694 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4695 if (!conn) 4696 goto unlock; 4697 4698 hci_conn_hold(conn); 4699 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4700 hci_conn_drop(conn); 4701 4702 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4703 conn_set_key(conn, ev->key_type, conn->pin_length); 4704 4705 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4706 goto unlock; 4707 4708 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4709 ev->key_type, pin_len, &persistent); 4710 if (!key) 4711 goto unlock; 4712 4713 /* Update connection information since adding the key will have 4714 * fixed up the type in the case of changed combination keys. 4715 */ 4716 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4717 conn_set_key(conn, key->type, key->pin_len); 4718 4719 mgmt_new_link_key(hdev, key, persistent); 4720 4721 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4722 * is set. If it's not set simply remove the key from the kernel 4723 * list (we've still notified user space about it but with 4724 * store_hint being 0). 4725 */ 4726 if (key->type == HCI_LK_DEBUG_COMBINATION && 4727 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4728 list_del_rcu(&key->list); 4729 kfree_rcu(key, rcu); 4730 goto unlock; 4731 } 4732 4733 if (persistent) 4734 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4735 else 4736 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4737 4738 unlock: 4739 hci_dev_unlock(hdev); 4740 } 4741 4742 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4743 struct sk_buff *skb) 4744 { 4745 struct hci_ev_clock_offset *ev = data; 4746 struct hci_conn *conn; 4747 4748 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4749 4750 hci_dev_lock(hdev); 4751 4752 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4753 if (conn && !ev->status) { 4754 struct inquiry_entry *ie; 4755 4756 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4757 if (ie) { 4758 ie->data.clock_offset = ev->clock_offset; 4759 ie->timestamp = jiffies; 4760 } 4761 } 4762 4763 hci_dev_unlock(hdev); 4764 } 4765 4766 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4767 struct sk_buff *skb) 4768 { 4769 struct hci_ev_pkt_type_change *ev = data; 4770 struct hci_conn *conn; 4771 4772 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4773 4774 hci_dev_lock(hdev); 4775 4776 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4777 if (conn && !ev->status) 4778 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4779 4780 hci_dev_unlock(hdev); 4781 } 4782 4783 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4784 struct sk_buff *skb) 4785 { 4786 struct hci_ev_pscan_rep_mode *ev = data; 4787 struct inquiry_entry *ie; 4788 4789 bt_dev_dbg(hdev, ""); 4790 4791 hci_dev_lock(hdev); 4792 4793 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4794 if (ie) { 4795 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4796 ie->timestamp = jiffies; 4797 } 4798 4799 hci_dev_unlock(hdev); 4800 } 4801 4802 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4803 struct sk_buff *skb) 4804 { 4805 struct hci_ev_inquiry_result_rssi *ev = edata; 4806 struct inquiry_data data; 4807 int i; 4808 4809 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4810 4811 if (!ev->num) 4812 return; 4813 4814 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4815 return; 4816 4817 hci_dev_lock(hdev); 4818 4819 if (skb->len == array_size(ev->num, 4820 sizeof(struct inquiry_info_rssi_pscan))) { 4821 struct inquiry_info_rssi_pscan *info; 4822 4823 for (i = 0; i < ev->num; i++) { 4824 u32 flags; 4825 4826 info = hci_ev_skb_pull(hdev, skb, 4827 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4828 sizeof(*info)); 4829 if (!info) { 4830 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4831 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4832 goto unlock; 4833 } 4834 4835 bacpy(&data.bdaddr, &info->bdaddr); 4836 data.pscan_rep_mode = info->pscan_rep_mode; 4837 data.pscan_period_mode = info->pscan_period_mode; 4838 data.pscan_mode = info->pscan_mode; 4839 memcpy(data.dev_class, info->dev_class, 3); 4840 data.clock_offset = info->clock_offset; 4841 data.rssi = info->rssi; 4842 data.ssp_mode = 0x00; 4843 4844 flags = hci_inquiry_cache_update(hdev, &data, false); 4845 4846 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4847 info->dev_class, info->rssi, 4848 flags, NULL, 0, NULL, 0, 0); 4849 } 4850 } else if (skb->len == array_size(ev->num, 4851 sizeof(struct inquiry_info_rssi))) { 4852 struct inquiry_info_rssi *info; 4853 4854 for (i = 0; i < ev->num; i++) { 4855 u32 flags; 4856 4857 info = hci_ev_skb_pull(hdev, skb, 4858 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4859 sizeof(*info)); 4860 if (!info) { 4861 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4862 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4863 goto unlock; 4864 } 4865 4866 bacpy(&data.bdaddr, &info->bdaddr); 4867 data.pscan_rep_mode = info->pscan_rep_mode; 4868 data.pscan_period_mode = info->pscan_period_mode; 4869 data.pscan_mode = 0x00; 4870 memcpy(data.dev_class, info->dev_class, 3); 4871 data.clock_offset = info->clock_offset; 4872 data.rssi = info->rssi; 4873 data.ssp_mode = 0x00; 4874 4875 flags = hci_inquiry_cache_update(hdev, &data, false); 4876 4877 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4878 info->dev_class, info->rssi, 4879 flags, NULL, 0, NULL, 0, 0); 4880 } 4881 } else { 4882 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4883 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4884 } 4885 unlock: 4886 hci_dev_unlock(hdev); 4887 } 4888 4889 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4890 struct sk_buff *skb) 4891 { 4892 struct hci_ev_remote_ext_features *ev = data; 4893 struct hci_conn *conn; 4894 4895 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4896 4897 hci_dev_lock(hdev); 4898 4899 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4900 if (!conn) 4901 goto unlock; 4902 4903 if (ev->page < HCI_MAX_PAGES) 4904 memcpy(conn->features[ev->page], ev->features, 8); 4905 4906 if (!ev->status && ev->page == 0x01) { 4907 struct inquiry_entry *ie; 4908 4909 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4910 if (ie) 4911 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4912 4913 if (ev->features[0] & LMP_HOST_SSP) { 4914 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4915 } else { 4916 /* It is mandatory by the Bluetooth specification that 4917 * Extended Inquiry Results are only used when Secure 4918 * Simple Pairing is enabled, but some devices violate 4919 * this. 4920 * 4921 * To make these devices work, the internal SSP 4922 * enabled flag needs to be cleared if the remote host 4923 * features do not indicate SSP support */ 4924 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4925 } 4926 4927 if (ev->features[0] & LMP_HOST_SC) 4928 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4929 } 4930 4931 if (conn->state != BT_CONFIG) 4932 goto unlock; 4933 4934 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4935 struct hci_cp_remote_name_req cp; 4936 memset(&cp, 0, sizeof(cp)); 4937 bacpy(&cp.bdaddr, &conn->dst); 4938 cp.pscan_rep_mode = 0x02; 4939 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4940 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 4941 mgmt_device_connected(hdev, conn, NULL, 0); 4942 4943 if (!hci_outgoing_auth_needed(hdev, conn)) { 4944 conn->state = BT_CONNECTED; 4945 hci_connect_cfm(conn, ev->status); 4946 hci_conn_drop(conn); 4947 } 4948 4949 unlock: 4950 hci_dev_unlock(hdev); 4951 } 4952 4953 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4954 struct sk_buff *skb) 4955 { 4956 struct hci_ev_sync_conn_complete *ev = data; 4957 struct hci_conn *conn; 4958 u8 status = ev->status; 4959 4960 switch (ev->link_type) { 4961 case SCO_LINK: 4962 case ESCO_LINK: 4963 break; 4964 default: 4965 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4966 * for HCI_Synchronous_Connection_Complete is limited to 4967 * either SCO or eSCO 4968 */ 4969 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4970 return; 4971 } 4972 4973 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4974 4975 hci_dev_lock(hdev); 4976 4977 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4978 if (!conn) { 4979 if (ev->link_type == ESCO_LINK) 4980 goto unlock; 4981 4982 /* When the link type in the event indicates SCO connection 4983 * and lookup of the connection object fails, then check 4984 * if an eSCO connection object exists. 4985 * 4986 * The core limits the synchronous connections to either 4987 * SCO or eSCO. The eSCO connection is preferred and tried 4988 * to be setup first and until successfully established, 4989 * the link type will be hinted as eSCO. 4990 */ 4991 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4992 if (!conn) 4993 goto unlock; 4994 } 4995 4996 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4997 * Processing it more than once per connection can corrupt kernel memory. 4998 * 4999 * As the connection handle is set here for the first time, it indicates 5000 * whether the connection is already set up. 5001 */ 5002 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 5003 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 5004 goto unlock; 5005 } 5006 5007 switch (status) { 5008 case 0x00: 5009 conn->handle = __le16_to_cpu(ev->handle); 5010 if (conn->handle > HCI_CONN_HANDLE_MAX) { 5011 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", 5012 conn->handle, HCI_CONN_HANDLE_MAX); 5013 status = HCI_ERROR_INVALID_PARAMETERS; 5014 conn->state = BT_CLOSED; 5015 break; 5016 } 5017 5018 conn->state = BT_CONNECTED; 5019 conn->type = ev->link_type; 5020 5021 hci_debugfs_create_conn(conn); 5022 hci_conn_add_sysfs(conn); 5023 break; 5024 5025 case 0x10: /* Connection Accept Timeout */ 5026 case 0x0d: /* Connection Rejected due to Limited Resources */ 5027 case 0x11: /* Unsupported Feature or Parameter Value */ 5028 case 0x1c: /* SCO interval rejected */ 5029 case 0x1a: /* Unsupported Remote Feature */ 5030 case 0x1e: /* Invalid LMP Parameters */ 5031 case 0x1f: /* Unspecified error */ 5032 case 0x20: /* Unsupported LMP Parameter value */ 5033 if (conn->out) { 5034 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 5035 (hdev->esco_type & EDR_ESCO_MASK); 5036 if (hci_setup_sync(conn, conn->parent->handle)) 5037 goto unlock; 5038 } 5039 fallthrough; 5040 5041 default: 5042 conn->state = BT_CLOSED; 5043 break; 5044 } 5045 5046 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5047 /* Notify only in case of SCO over HCI transport data path which 5048 * is zero and non-zero value shall be non-HCI transport data path 5049 */ 5050 if (conn->codec.data_path == 0 && hdev->notify) { 5051 switch (ev->air_mode) { 5052 case 0x02: 5053 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5054 break; 5055 case 0x03: 5056 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5057 break; 5058 } 5059 } 5060 5061 hci_connect_cfm(conn, status); 5062 if (status) 5063 hci_conn_del(conn); 5064 5065 unlock: 5066 hci_dev_unlock(hdev); 5067 } 5068 5069 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5070 { 5071 size_t parsed = 0; 5072 5073 while (parsed < eir_len) { 5074 u8 field_len = eir[0]; 5075 5076 if (field_len == 0) 5077 return parsed; 5078 5079 parsed += field_len + 1; 5080 eir += field_len + 1; 5081 } 5082 5083 return eir_len; 5084 } 5085 5086 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5087 struct sk_buff *skb) 5088 { 5089 struct hci_ev_ext_inquiry_result *ev = edata; 5090 struct inquiry_data data; 5091 size_t eir_len; 5092 int i; 5093 5094 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5095 flex_array_size(ev, info, ev->num))) 5096 return; 5097 5098 bt_dev_dbg(hdev, "num %d", ev->num); 5099 5100 if (!ev->num) 5101 return; 5102 5103 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5104 return; 5105 5106 hci_dev_lock(hdev); 5107 5108 for (i = 0; i < ev->num; i++) { 5109 struct extended_inquiry_info *info = &ev->info[i]; 5110 u32 flags; 5111 bool name_known; 5112 5113 bacpy(&data.bdaddr, &info->bdaddr); 5114 data.pscan_rep_mode = info->pscan_rep_mode; 5115 data.pscan_period_mode = info->pscan_period_mode; 5116 data.pscan_mode = 0x00; 5117 memcpy(data.dev_class, info->dev_class, 3); 5118 data.clock_offset = info->clock_offset; 5119 data.rssi = info->rssi; 5120 data.ssp_mode = 0x01; 5121 5122 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5123 name_known = eir_get_data(info->data, 5124 sizeof(info->data), 5125 EIR_NAME_COMPLETE, NULL); 5126 else 5127 name_known = true; 5128 5129 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5130 5131 eir_len = eir_get_length(info->data, sizeof(info->data)); 5132 5133 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5134 info->dev_class, info->rssi, 5135 flags, info->data, eir_len, NULL, 0, 0); 5136 } 5137 5138 hci_dev_unlock(hdev); 5139 } 5140 5141 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5142 struct sk_buff *skb) 5143 { 5144 struct hci_ev_key_refresh_complete *ev = data; 5145 struct hci_conn *conn; 5146 5147 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5148 __le16_to_cpu(ev->handle)); 5149 5150 hci_dev_lock(hdev); 5151 5152 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5153 if (!conn) 5154 goto unlock; 5155 5156 /* For BR/EDR the necessary steps are taken through the 5157 * auth_complete event. 5158 */ 5159 if (conn->type != LE_LINK) 5160 goto unlock; 5161 5162 if (!ev->status) 5163 conn->sec_level = conn->pending_sec_level; 5164 5165 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5166 5167 if (ev->status && conn->state == BT_CONNECTED) { 5168 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5169 hci_conn_drop(conn); 5170 goto unlock; 5171 } 5172 5173 if (conn->state == BT_CONFIG) { 5174 if (!ev->status) 5175 conn->state = BT_CONNECTED; 5176 5177 hci_connect_cfm(conn, ev->status); 5178 hci_conn_drop(conn); 5179 } else { 5180 hci_auth_cfm(conn, ev->status); 5181 5182 hci_conn_hold(conn); 5183 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5184 hci_conn_drop(conn); 5185 } 5186 5187 unlock: 5188 hci_dev_unlock(hdev); 5189 } 5190 5191 static u8 hci_get_auth_req(struct hci_conn *conn) 5192 { 5193 /* If remote requests no-bonding follow that lead */ 5194 if (conn->remote_auth == HCI_AT_NO_BONDING || 5195 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5196 return conn->remote_auth | (conn->auth_type & 0x01); 5197 5198 /* If both remote and local have enough IO capabilities, require 5199 * MITM protection 5200 */ 5201 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5202 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5203 return conn->remote_auth | 0x01; 5204 5205 /* No MITM protection possible so ignore remote requirement */ 5206 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5207 } 5208 5209 static u8 bredr_oob_data_present(struct hci_conn *conn) 5210 { 5211 struct hci_dev *hdev = conn->hdev; 5212 struct oob_data *data; 5213 5214 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5215 if (!data) 5216 return 0x00; 5217 5218 if (bredr_sc_enabled(hdev)) { 5219 /* When Secure Connections is enabled, then just 5220 * return the present value stored with the OOB 5221 * data. The stored value contains the right present 5222 * information. However it can only be trusted when 5223 * not in Secure Connection Only mode. 5224 */ 5225 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5226 return data->present; 5227 5228 /* When Secure Connections Only mode is enabled, then 5229 * the P-256 values are required. If they are not 5230 * available, then do not declare that OOB data is 5231 * present. 5232 */ 5233 if (!memcmp(data->rand256, ZERO_KEY, 16) || 5234 !memcmp(data->hash256, ZERO_KEY, 16)) 5235 return 0x00; 5236 5237 return 0x02; 5238 } 5239 5240 /* When Secure Connections is not enabled or actually 5241 * not supported by the hardware, then check that if 5242 * P-192 data values are present. 5243 */ 5244 if (!memcmp(data->rand192, ZERO_KEY, 16) || 5245 !memcmp(data->hash192, ZERO_KEY, 16)) 5246 return 0x00; 5247 5248 return 0x01; 5249 } 5250 5251 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5252 struct sk_buff *skb) 5253 { 5254 struct hci_ev_io_capa_request *ev = data; 5255 struct hci_conn *conn; 5256 5257 bt_dev_dbg(hdev, ""); 5258 5259 hci_dev_lock(hdev); 5260 5261 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5262 if (!conn) 5263 goto unlock; 5264 5265 hci_conn_hold(conn); 5266 5267 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5268 goto unlock; 5269 5270 /* Allow pairing if we're pairable, the initiators of the 5271 * pairing or if the remote is not requesting bonding. 5272 */ 5273 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5274 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5275 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5276 struct hci_cp_io_capability_reply cp; 5277 5278 bacpy(&cp.bdaddr, &ev->bdaddr); 5279 /* Change the IO capability from KeyboardDisplay 5280 * to DisplayYesNo as it is not supported by BT spec. */ 5281 cp.capability = (conn->io_capability == 0x04) ? 5282 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5283 5284 /* If we are initiators, there is no remote information yet */ 5285 if (conn->remote_auth == 0xff) { 5286 /* Request MITM protection if our IO caps allow it 5287 * except for the no-bonding case. 5288 */ 5289 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5290 conn->auth_type != HCI_AT_NO_BONDING) 5291 conn->auth_type |= 0x01; 5292 } else { 5293 conn->auth_type = hci_get_auth_req(conn); 5294 } 5295 5296 /* If we're not bondable, force one of the non-bondable 5297 * authentication requirement values. 5298 */ 5299 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5300 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5301 5302 cp.authentication = conn->auth_type; 5303 cp.oob_data = bredr_oob_data_present(conn); 5304 5305 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5306 sizeof(cp), &cp); 5307 } else { 5308 struct hci_cp_io_capability_neg_reply cp; 5309 5310 bacpy(&cp.bdaddr, &ev->bdaddr); 5311 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5312 5313 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5314 sizeof(cp), &cp); 5315 } 5316 5317 unlock: 5318 hci_dev_unlock(hdev); 5319 } 5320 5321 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5322 struct sk_buff *skb) 5323 { 5324 struct hci_ev_io_capa_reply *ev = data; 5325 struct hci_conn *conn; 5326 5327 bt_dev_dbg(hdev, ""); 5328 5329 hci_dev_lock(hdev); 5330 5331 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5332 if (!conn) 5333 goto unlock; 5334 5335 conn->remote_cap = ev->capability; 5336 conn->remote_auth = ev->authentication; 5337 5338 unlock: 5339 hci_dev_unlock(hdev); 5340 } 5341 5342 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5343 struct sk_buff *skb) 5344 { 5345 struct hci_ev_user_confirm_req *ev = data; 5346 int loc_mitm, rem_mitm, confirm_hint = 0; 5347 struct hci_conn *conn; 5348 5349 bt_dev_dbg(hdev, ""); 5350 5351 hci_dev_lock(hdev); 5352 5353 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5354 goto unlock; 5355 5356 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5357 if (!conn) 5358 goto unlock; 5359 5360 loc_mitm = (conn->auth_type & 0x01); 5361 rem_mitm = (conn->remote_auth & 0x01); 5362 5363 /* If we require MITM but the remote device can't provide that 5364 * (it has NoInputNoOutput) then reject the confirmation 5365 * request. We check the security level here since it doesn't 5366 * necessarily match conn->auth_type. 5367 */ 5368 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5369 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5370 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5371 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5372 sizeof(ev->bdaddr), &ev->bdaddr); 5373 goto unlock; 5374 } 5375 5376 /* If no side requires MITM protection; auto-accept */ 5377 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5378 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5379 5380 /* If we're not the initiators request authorization to 5381 * proceed from user space (mgmt_user_confirm with 5382 * confirm_hint set to 1). The exception is if neither 5383 * side had MITM or if the local IO capability is 5384 * NoInputNoOutput, in which case we do auto-accept 5385 */ 5386 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5387 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5388 (loc_mitm || rem_mitm)) { 5389 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5390 confirm_hint = 1; 5391 goto confirm; 5392 } 5393 5394 /* If there already exists link key in local host, leave the 5395 * decision to user space since the remote device could be 5396 * legitimate or malicious. 5397 */ 5398 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5399 bt_dev_dbg(hdev, "Local host already has link key"); 5400 confirm_hint = 1; 5401 goto confirm; 5402 } 5403 5404 BT_DBG("Auto-accept of user confirmation with %ums delay", 5405 hdev->auto_accept_delay); 5406 5407 if (hdev->auto_accept_delay > 0) { 5408 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5409 queue_delayed_work(conn->hdev->workqueue, 5410 &conn->auto_accept_work, delay); 5411 goto unlock; 5412 } 5413 5414 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5415 sizeof(ev->bdaddr), &ev->bdaddr); 5416 goto unlock; 5417 } 5418 5419 confirm: 5420 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5421 le32_to_cpu(ev->passkey), confirm_hint); 5422 5423 unlock: 5424 hci_dev_unlock(hdev); 5425 } 5426 5427 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5428 struct sk_buff *skb) 5429 { 5430 struct hci_ev_user_passkey_req *ev = data; 5431 5432 bt_dev_dbg(hdev, ""); 5433 5434 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5435 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5436 } 5437 5438 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5439 struct sk_buff *skb) 5440 { 5441 struct hci_ev_user_passkey_notify *ev = data; 5442 struct hci_conn *conn; 5443 5444 bt_dev_dbg(hdev, ""); 5445 5446 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5447 if (!conn) 5448 return; 5449 5450 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5451 conn->passkey_entered = 0; 5452 5453 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5454 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5455 conn->dst_type, conn->passkey_notify, 5456 conn->passkey_entered); 5457 } 5458 5459 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5460 struct sk_buff *skb) 5461 { 5462 struct hci_ev_keypress_notify *ev = data; 5463 struct hci_conn *conn; 5464 5465 bt_dev_dbg(hdev, ""); 5466 5467 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5468 if (!conn) 5469 return; 5470 5471 switch (ev->type) { 5472 case HCI_KEYPRESS_STARTED: 5473 conn->passkey_entered = 0; 5474 return; 5475 5476 case HCI_KEYPRESS_ENTERED: 5477 conn->passkey_entered++; 5478 break; 5479 5480 case HCI_KEYPRESS_ERASED: 5481 conn->passkey_entered--; 5482 break; 5483 5484 case HCI_KEYPRESS_CLEARED: 5485 conn->passkey_entered = 0; 5486 break; 5487 5488 case HCI_KEYPRESS_COMPLETED: 5489 return; 5490 } 5491 5492 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5493 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5494 conn->dst_type, conn->passkey_notify, 5495 conn->passkey_entered); 5496 } 5497 5498 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5499 struct sk_buff *skb) 5500 { 5501 struct hci_ev_simple_pair_complete *ev = data; 5502 struct hci_conn *conn; 5503 5504 bt_dev_dbg(hdev, ""); 5505 5506 hci_dev_lock(hdev); 5507 5508 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5509 if (!conn) 5510 goto unlock; 5511 5512 /* Reset the authentication requirement to unknown */ 5513 conn->remote_auth = 0xff; 5514 5515 /* To avoid duplicate auth_failed events to user space we check 5516 * the HCI_CONN_AUTH_PEND flag which will be set if we 5517 * initiated the authentication. A traditional auth_complete 5518 * event gets always produced as initiator and is also mapped to 5519 * the mgmt_auth_failed event */ 5520 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5521 mgmt_auth_failed(conn, ev->status); 5522 5523 hci_conn_drop(conn); 5524 5525 unlock: 5526 hci_dev_unlock(hdev); 5527 } 5528 5529 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5530 struct sk_buff *skb) 5531 { 5532 struct hci_ev_remote_host_features *ev = data; 5533 struct inquiry_entry *ie; 5534 struct hci_conn *conn; 5535 5536 bt_dev_dbg(hdev, ""); 5537 5538 hci_dev_lock(hdev); 5539 5540 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5541 if (conn) 5542 memcpy(conn->features[1], ev->features, 8); 5543 5544 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5545 if (ie) 5546 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5547 5548 hci_dev_unlock(hdev); 5549 } 5550 5551 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5552 struct sk_buff *skb) 5553 { 5554 struct hci_ev_remote_oob_data_request *ev = edata; 5555 struct oob_data *data; 5556 5557 bt_dev_dbg(hdev, ""); 5558 5559 hci_dev_lock(hdev); 5560 5561 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5562 goto unlock; 5563 5564 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5565 if (!data) { 5566 struct hci_cp_remote_oob_data_neg_reply cp; 5567 5568 bacpy(&cp.bdaddr, &ev->bdaddr); 5569 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5570 sizeof(cp), &cp); 5571 goto unlock; 5572 } 5573 5574 if (bredr_sc_enabled(hdev)) { 5575 struct hci_cp_remote_oob_ext_data_reply cp; 5576 5577 bacpy(&cp.bdaddr, &ev->bdaddr); 5578 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5579 memset(cp.hash192, 0, sizeof(cp.hash192)); 5580 memset(cp.rand192, 0, sizeof(cp.rand192)); 5581 } else { 5582 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5583 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5584 } 5585 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5586 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5587 5588 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5589 sizeof(cp), &cp); 5590 } else { 5591 struct hci_cp_remote_oob_data_reply cp; 5592 5593 bacpy(&cp.bdaddr, &ev->bdaddr); 5594 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5595 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5596 5597 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5598 sizeof(cp), &cp); 5599 } 5600 5601 unlock: 5602 hci_dev_unlock(hdev); 5603 } 5604 5605 #if IS_ENABLED(CONFIG_BT_HS) 5606 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data, 5607 struct sk_buff *skb) 5608 { 5609 struct hci_ev_channel_selected *ev = data; 5610 struct hci_conn *hcon; 5611 5612 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle); 5613 5614 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5615 if (!hcon) 5616 return; 5617 5618 amp_read_loc_assoc_final_data(hdev, hcon); 5619 } 5620 5621 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data, 5622 struct sk_buff *skb) 5623 { 5624 struct hci_ev_phy_link_complete *ev = data; 5625 struct hci_conn *hcon, *bredr_hcon; 5626 5627 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle, 5628 ev->status); 5629 5630 hci_dev_lock(hdev); 5631 5632 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5633 if (!hcon) 5634 goto unlock; 5635 5636 if (!hcon->amp_mgr) 5637 goto unlock; 5638 5639 if (ev->status) { 5640 hci_conn_del(hcon); 5641 goto unlock; 5642 } 5643 5644 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon; 5645 5646 hcon->state = BT_CONNECTED; 5647 bacpy(&hcon->dst, &bredr_hcon->dst); 5648 5649 hci_conn_hold(hcon); 5650 hcon->disc_timeout = HCI_DISCONN_TIMEOUT; 5651 hci_conn_drop(hcon); 5652 5653 hci_debugfs_create_conn(hcon); 5654 hci_conn_add_sysfs(hcon); 5655 5656 amp_physical_cfm(bredr_hcon, hcon); 5657 5658 unlock: 5659 hci_dev_unlock(hdev); 5660 } 5661 5662 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data, 5663 struct sk_buff *skb) 5664 { 5665 struct hci_ev_logical_link_complete *ev = data; 5666 struct hci_conn *hcon; 5667 struct hci_chan *hchan; 5668 struct amp_mgr *mgr; 5669 5670 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x", 5671 le16_to_cpu(ev->handle), ev->phy_handle, ev->status); 5672 5673 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5674 if (!hcon) 5675 return; 5676 5677 /* Create AMP hchan */ 5678 hchan = hci_chan_create(hcon); 5679 if (!hchan) 5680 return; 5681 5682 hchan->handle = le16_to_cpu(ev->handle); 5683 hchan->amp = true; 5684 5685 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan); 5686 5687 mgr = hcon->amp_mgr; 5688 if (mgr && mgr->bredr_chan) { 5689 struct l2cap_chan *bredr_chan = mgr->bredr_chan; 5690 5691 l2cap_chan_lock(bredr_chan); 5692 5693 bredr_chan->conn->mtu = hdev->block_mtu; 5694 l2cap_logical_cfm(bredr_chan, hchan, 0); 5695 hci_conn_hold(hcon); 5696 5697 l2cap_chan_unlock(bredr_chan); 5698 } 5699 } 5700 5701 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data, 5702 struct sk_buff *skb) 5703 { 5704 struct hci_ev_disconn_logical_link_complete *ev = data; 5705 struct hci_chan *hchan; 5706 5707 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", 5708 le16_to_cpu(ev->handle), ev->status); 5709 5710 if (ev->status) 5711 return; 5712 5713 hci_dev_lock(hdev); 5714 5715 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle)); 5716 if (!hchan || !hchan->amp) 5717 goto unlock; 5718 5719 amp_destroy_logical_link(hchan, ev->reason); 5720 5721 unlock: 5722 hci_dev_unlock(hdev); 5723 } 5724 5725 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data, 5726 struct sk_buff *skb) 5727 { 5728 struct hci_ev_disconn_phy_link_complete *ev = data; 5729 struct hci_conn *hcon; 5730 5731 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5732 5733 if (ev->status) 5734 return; 5735 5736 hci_dev_lock(hdev); 5737 5738 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5739 if (hcon && hcon->type == AMP_LINK) { 5740 hcon->state = BT_CLOSED; 5741 hci_disconn_cfm(hcon, ev->reason); 5742 hci_conn_del(hcon); 5743 } 5744 5745 hci_dev_unlock(hdev); 5746 } 5747 #endif 5748 5749 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5750 u8 bdaddr_type, bdaddr_t *local_rpa) 5751 { 5752 if (conn->out) { 5753 conn->dst_type = bdaddr_type; 5754 conn->resp_addr_type = bdaddr_type; 5755 bacpy(&conn->resp_addr, bdaddr); 5756 5757 /* Check if the controller has set a Local RPA then it must be 5758 * used instead or hdev->rpa. 5759 */ 5760 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5761 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5762 bacpy(&conn->init_addr, local_rpa); 5763 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5764 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5765 bacpy(&conn->init_addr, &conn->hdev->rpa); 5766 } else { 5767 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5768 &conn->init_addr_type); 5769 } 5770 } else { 5771 conn->resp_addr_type = conn->hdev->adv_addr_type; 5772 /* Check if the controller has set a Local RPA then it must be 5773 * used instead or hdev->rpa. 5774 */ 5775 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5776 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5777 bacpy(&conn->resp_addr, local_rpa); 5778 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5779 /* In case of ext adv, resp_addr will be updated in 5780 * Adv Terminated event. 5781 */ 5782 if (!ext_adv_capable(conn->hdev)) 5783 bacpy(&conn->resp_addr, 5784 &conn->hdev->random_addr); 5785 } else { 5786 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5787 } 5788 5789 conn->init_addr_type = bdaddr_type; 5790 bacpy(&conn->init_addr, bdaddr); 5791 5792 /* For incoming connections, set the default minimum 5793 * and maximum connection interval. They will be used 5794 * to check if the parameters are in range and if not 5795 * trigger the connection update procedure. 5796 */ 5797 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5798 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5799 } 5800 } 5801 5802 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5803 bdaddr_t *bdaddr, u8 bdaddr_type, 5804 bdaddr_t *local_rpa, u8 role, u16 handle, 5805 u16 interval, u16 latency, 5806 u16 supervision_timeout) 5807 { 5808 struct hci_conn_params *params; 5809 struct hci_conn *conn; 5810 struct smp_irk *irk; 5811 u8 addr_type; 5812 5813 hci_dev_lock(hdev); 5814 5815 /* All controllers implicitly stop advertising in the event of a 5816 * connection, so ensure that the state bit is cleared. 5817 */ 5818 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5819 5820 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5821 if (!conn) { 5822 /* In case of error status and there is no connection pending 5823 * just unlock as there is nothing to cleanup. 5824 */ 5825 if (status) 5826 goto unlock; 5827 5828 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role); 5829 if (!conn) { 5830 bt_dev_err(hdev, "no memory for new connection"); 5831 goto unlock; 5832 } 5833 5834 conn->dst_type = bdaddr_type; 5835 5836 /* If we didn't have a hci_conn object previously 5837 * but we're in central role this must be something 5838 * initiated using an accept list. Since accept list based 5839 * connections are not "first class citizens" we don't 5840 * have full tracking of them. Therefore, we go ahead 5841 * with a "best effort" approach of determining the 5842 * initiator address based on the HCI_PRIVACY flag. 5843 */ 5844 if (conn->out) { 5845 conn->resp_addr_type = bdaddr_type; 5846 bacpy(&conn->resp_addr, bdaddr); 5847 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5848 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5849 bacpy(&conn->init_addr, &hdev->rpa); 5850 } else { 5851 hci_copy_identity_address(hdev, 5852 &conn->init_addr, 5853 &conn->init_addr_type); 5854 } 5855 } 5856 } else { 5857 cancel_delayed_work(&conn->le_conn_timeout); 5858 } 5859 5860 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5861 * Processing it more than once per connection can corrupt kernel memory. 5862 * 5863 * As the connection handle is set here for the first time, it indicates 5864 * whether the connection is already set up. 5865 */ 5866 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 5867 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5868 goto unlock; 5869 } 5870 5871 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5872 5873 /* Lookup the identity address from the stored connection 5874 * address and address type. 5875 * 5876 * When establishing connections to an identity address, the 5877 * connection procedure will store the resolvable random 5878 * address first. Now if it can be converted back into the 5879 * identity address, start using the identity address from 5880 * now on. 5881 */ 5882 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5883 if (irk) { 5884 bacpy(&conn->dst, &irk->bdaddr); 5885 conn->dst_type = irk->addr_type; 5886 } 5887 5888 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5889 5890 if (handle > HCI_CONN_HANDLE_MAX) { 5891 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle, 5892 HCI_CONN_HANDLE_MAX); 5893 status = HCI_ERROR_INVALID_PARAMETERS; 5894 } 5895 5896 /* All connection failure handling is taken care of by the 5897 * hci_conn_failed function which is triggered by the HCI 5898 * request completion callbacks used for connecting. 5899 */ 5900 if (status) 5901 goto unlock; 5902 5903 /* Drop the connection if it has been aborted */ 5904 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5905 hci_conn_drop(conn); 5906 goto unlock; 5907 } 5908 5909 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5910 addr_type = BDADDR_LE_PUBLIC; 5911 else 5912 addr_type = BDADDR_LE_RANDOM; 5913 5914 /* Drop the connection if the device is blocked */ 5915 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5916 hci_conn_drop(conn); 5917 goto unlock; 5918 } 5919 5920 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 5921 mgmt_device_connected(hdev, conn, NULL, 0); 5922 5923 conn->sec_level = BT_SECURITY_LOW; 5924 conn->handle = handle; 5925 conn->state = BT_CONFIG; 5926 5927 /* Store current advertising instance as connection advertising instance 5928 * when sotfware rotation is in use so it can be re-enabled when 5929 * disconnected. 5930 */ 5931 if (!ext_adv_capable(hdev)) 5932 conn->adv_instance = hdev->cur_adv_instance; 5933 5934 conn->le_conn_interval = interval; 5935 conn->le_conn_latency = latency; 5936 conn->le_supv_timeout = supervision_timeout; 5937 5938 hci_debugfs_create_conn(conn); 5939 hci_conn_add_sysfs(conn); 5940 5941 /* The remote features procedure is defined for central 5942 * role only. So only in case of an initiated connection 5943 * request the remote features. 5944 * 5945 * If the local controller supports peripheral-initiated features 5946 * exchange, then requesting the remote features in peripheral 5947 * role is possible. Otherwise just transition into the 5948 * connected state without requesting the remote features. 5949 */ 5950 if (conn->out || 5951 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5952 struct hci_cp_le_read_remote_features cp; 5953 5954 cp.handle = __cpu_to_le16(conn->handle); 5955 5956 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5957 sizeof(cp), &cp); 5958 5959 hci_conn_hold(conn); 5960 } else { 5961 conn->state = BT_CONNECTED; 5962 hci_connect_cfm(conn, status); 5963 } 5964 5965 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5966 conn->dst_type); 5967 if (params) { 5968 hci_pend_le_list_del_init(params); 5969 if (params->conn) { 5970 hci_conn_drop(params->conn); 5971 hci_conn_put(params->conn); 5972 params->conn = NULL; 5973 } 5974 } 5975 5976 unlock: 5977 hci_update_passive_scan(hdev); 5978 hci_dev_unlock(hdev); 5979 } 5980 5981 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5982 struct sk_buff *skb) 5983 { 5984 struct hci_ev_le_conn_complete *ev = data; 5985 5986 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5987 5988 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5989 NULL, ev->role, le16_to_cpu(ev->handle), 5990 le16_to_cpu(ev->interval), 5991 le16_to_cpu(ev->latency), 5992 le16_to_cpu(ev->supervision_timeout)); 5993 } 5994 5995 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5996 struct sk_buff *skb) 5997 { 5998 struct hci_ev_le_enh_conn_complete *ev = data; 5999 6000 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6001 6002 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 6003 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 6004 le16_to_cpu(ev->interval), 6005 le16_to_cpu(ev->latency), 6006 le16_to_cpu(ev->supervision_timeout)); 6007 } 6008 6009 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 6010 struct sk_buff *skb) 6011 { 6012 struct hci_evt_le_ext_adv_set_term *ev = data; 6013 struct hci_conn *conn; 6014 struct adv_info *adv, *n; 6015 6016 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6017 6018 /* The Bluetooth Core 5.3 specification clearly states that this event 6019 * shall not be sent when the Host disables the advertising set. So in 6020 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 6021 * 6022 * When the Host disables an advertising set, all cleanup is done via 6023 * its command callback and not needed to be duplicated here. 6024 */ 6025 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 6026 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 6027 return; 6028 } 6029 6030 hci_dev_lock(hdev); 6031 6032 adv = hci_find_adv_instance(hdev, ev->handle); 6033 6034 if (ev->status) { 6035 if (!adv) 6036 goto unlock; 6037 6038 /* Remove advertising as it has been terminated */ 6039 hci_remove_adv_instance(hdev, ev->handle); 6040 mgmt_advertising_removed(NULL, hdev, ev->handle); 6041 6042 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 6043 if (adv->enabled) 6044 goto unlock; 6045 } 6046 6047 /* We are no longer advertising, clear HCI_LE_ADV */ 6048 hci_dev_clear_flag(hdev, HCI_LE_ADV); 6049 goto unlock; 6050 } 6051 6052 if (adv) 6053 adv->enabled = false; 6054 6055 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 6056 if (conn) { 6057 /* Store handle in the connection so the correct advertising 6058 * instance can be re-enabled when disconnected. 6059 */ 6060 conn->adv_instance = ev->handle; 6061 6062 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 6063 bacmp(&conn->resp_addr, BDADDR_ANY)) 6064 goto unlock; 6065 6066 if (!ev->handle) { 6067 bacpy(&conn->resp_addr, &hdev->random_addr); 6068 goto unlock; 6069 } 6070 6071 if (adv) 6072 bacpy(&conn->resp_addr, &adv->random_addr); 6073 } 6074 6075 unlock: 6076 hci_dev_unlock(hdev); 6077 } 6078 6079 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 6080 struct sk_buff *skb) 6081 { 6082 struct hci_ev_le_conn_update_complete *ev = data; 6083 struct hci_conn *conn; 6084 6085 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6086 6087 if (ev->status) 6088 return; 6089 6090 hci_dev_lock(hdev); 6091 6092 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6093 if (conn) { 6094 conn->le_conn_interval = le16_to_cpu(ev->interval); 6095 conn->le_conn_latency = le16_to_cpu(ev->latency); 6096 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 6097 } 6098 6099 hci_dev_unlock(hdev); 6100 } 6101 6102 /* This function requires the caller holds hdev->lock */ 6103 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 6104 bdaddr_t *addr, 6105 u8 addr_type, bool addr_resolved, 6106 u8 adv_type) 6107 { 6108 struct hci_conn *conn; 6109 struct hci_conn_params *params; 6110 6111 /* If the event is not connectable don't proceed further */ 6112 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 6113 return NULL; 6114 6115 /* Ignore if the device is blocked or hdev is suspended */ 6116 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 6117 hdev->suspended) 6118 return NULL; 6119 6120 /* Most controller will fail if we try to create new connections 6121 * while we have an existing one in peripheral role. 6122 */ 6123 if (hdev->conn_hash.le_num_peripheral > 0 && 6124 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || 6125 !(hdev->le_states[3] & 0x10))) 6126 return NULL; 6127 6128 /* If we're not connectable only connect devices that we have in 6129 * our pend_le_conns list. 6130 */ 6131 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 6132 addr_type); 6133 if (!params) 6134 return NULL; 6135 6136 if (!params->explicit_connect) { 6137 switch (params->auto_connect) { 6138 case HCI_AUTO_CONN_DIRECT: 6139 /* Only devices advertising with ADV_DIRECT_IND are 6140 * triggering a connection attempt. This is allowing 6141 * incoming connections from peripheral devices. 6142 */ 6143 if (adv_type != LE_ADV_DIRECT_IND) 6144 return NULL; 6145 break; 6146 case HCI_AUTO_CONN_ALWAYS: 6147 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 6148 * are triggering a connection attempt. This means 6149 * that incoming connections from peripheral device are 6150 * accepted and also outgoing connections to peripheral 6151 * devices are established when found. 6152 */ 6153 break; 6154 default: 6155 return NULL; 6156 } 6157 } 6158 6159 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 6160 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 6161 HCI_ROLE_MASTER); 6162 if (!IS_ERR(conn)) { 6163 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 6164 * by higher layer that tried to connect, if no then 6165 * store the pointer since we don't really have any 6166 * other owner of the object besides the params that 6167 * triggered it. This way we can abort the connection if 6168 * the parameters get removed and keep the reference 6169 * count consistent once the connection is established. 6170 */ 6171 6172 if (!params->explicit_connect) 6173 params->conn = hci_conn_get(conn); 6174 6175 return conn; 6176 } 6177 6178 switch (PTR_ERR(conn)) { 6179 case -EBUSY: 6180 /* If hci_connect() returns -EBUSY it means there is already 6181 * an LE connection attempt going on. Since controllers don't 6182 * support more than one connection attempt at the time, we 6183 * don't consider this an error case. 6184 */ 6185 break; 6186 default: 6187 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 6188 return NULL; 6189 } 6190 6191 return NULL; 6192 } 6193 6194 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6195 u8 bdaddr_type, bdaddr_t *direct_addr, 6196 u8 direct_addr_type, s8 rssi, u8 *data, u8 len, 6197 bool ext_adv, bool ctl_time, u64 instant) 6198 { 6199 struct discovery_state *d = &hdev->discovery; 6200 struct smp_irk *irk; 6201 struct hci_conn *conn; 6202 bool match, bdaddr_resolved; 6203 u32 flags; 6204 u8 *ptr; 6205 6206 switch (type) { 6207 case LE_ADV_IND: 6208 case LE_ADV_DIRECT_IND: 6209 case LE_ADV_SCAN_IND: 6210 case LE_ADV_NONCONN_IND: 6211 case LE_ADV_SCAN_RSP: 6212 break; 6213 default: 6214 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6215 "type: 0x%02x", type); 6216 return; 6217 } 6218 6219 if (!ext_adv && len > HCI_MAX_AD_LENGTH) { 6220 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes"); 6221 return; 6222 } 6223 6224 /* Find the end of the data in case the report contains padded zero 6225 * bytes at the end causing an invalid length value. 6226 * 6227 * When data is NULL, len is 0 so there is no need for extra ptr 6228 * check as 'ptr < data + 0' is already false in such case. 6229 */ 6230 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6231 if (ptr + 1 + *ptr > data + len) 6232 break; 6233 } 6234 6235 /* Adjust for actual length. This handles the case when remote 6236 * device is advertising with incorrect data length. 6237 */ 6238 len = ptr - data; 6239 6240 /* If the direct address is present, then this report is from 6241 * a LE Direct Advertising Report event. In that case it is 6242 * important to see if the address is matching the local 6243 * controller address. 6244 */ 6245 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6246 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6247 &bdaddr_resolved); 6248 6249 /* Only resolvable random addresses are valid for these 6250 * kind of reports and others can be ignored. 6251 */ 6252 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6253 return; 6254 6255 /* If the controller is not using resolvable random 6256 * addresses, then this report can be ignored. 6257 */ 6258 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6259 return; 6260 6261 /* If the local IRK of the controller does not match 6262 * with the resolvable random address provided, then 6263 * this report can be ignored. 6264 */ 6265 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6266 return; 6267 } 6268 6269 /* Check if we need to convert to identity address */ 6270 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6271 if (irk) { 6272 bdaddr = &irk->bdaddr; 6273 bdaddr_type = irk->addr_type; 6274 } 6275 6276 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6277 6278 /* Check if we have been requested to connect to this device. 6279 * 6280 * direct_addr is set only for directed advertising reports (it is NULL 6281 * for advertising reports) and is already verified to be RPA above. 6282 */ 6283 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6284 type); 6285 if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) { 6286 /* Store report for later inclusion by 6287 * mgmt_device_connected 6288 */ 6289 memcpy(conn->le_adv_data, data, len); 6290 conn->le_adv_data_len = len; 6291 } 6292 6293 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6294 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6295 else 6296 flags = 0; 6297 6298 /* All scan results should be sent up for Mesh systems */ 6299 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6300 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6301 rssi, flags, data, len, NULL, 0, instant); 6302 return; 6303 } 6304 6305 /* Passive scanning shouldn't trigger any device found events, 6306 * except for devices marked as CONN_REPORT for which we do send 6307 * device found events, or advertisement monitoring requested. 6308 */ 6309 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6310 if (type == LE_ADV_DIRECT_IND) 6311 return; 6312 6313 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6314 bdaddr, bdaddr_type) && 6315 idr_is_empty(&hdev->adv_monitors_idr)) 6316 return; 6317 6318 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6319 rssi, flags, data, len, NULL, 0, 0); 6320 return; 6321 } 6322 6323 /* When receiving a scan response, then there is no way to 6324 * know if the remote device is connectable or not. However 6325 * since scan responses are merged with a previously seen 6326 * advertising report, the flags field from that report 6327 * will be used. 6328 * 6329 * In the unlikely case that a controller just sends a scan 6330 * response event that doesn't match the pending report, then 6331 * it is marked as a standalone SCAN_RSP. 6332 */ 6333 if (type == LE_ADV_SCAN_RSP) 6334 flags = MGMT_DEV_FOUND_SCAN_RSP; 6335 6336 /* If there's nothing pending either store the data from this 6337 * event or send an immediate device found event if the data 6338 * should not be stored for later. 6339 */ 6340 if (!ext_adv && !has_pending_adv_report(hdev)) { 6341 /* If the report will trigger a SCAN_REQ store it for 6342 * later merging. 6343 */ 6344 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6345 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6346 rssi, flags, data, len); 6347 return; 6348 } 6349 6350 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6351 rssi, flags, data, len, NULL, 0, 0); 6352 return; 6353 } 6354 6355 /* Check if the pending report is for the same device as the new one */ 6356 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6357 bdaddr_type == d->last_adv_addr_type); 6358 6359 /* If the pending data doesn't match this report or this isn't a 6360 * scan response (e.g. we got a duplicate ADV_IND) then force 6361 * sending of the pending data. 6362 */ 6363 if (type != LE_ADV_SCAN_RSP || !match) { 6364 /* Send out whatever is in the cache, but skip duplicates */ 6365 if (!match) 6366 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6367 d->last_adv_addr_type, NULL, 6368 d->last_adv_rssi, d->last_adv_flags, 6369 d->last_adv_data, 6370 d->last_adv_data_len, NULL, 0, 0); 6371 6372 /* If the new report will trigger a SCAN_REQ store it for 6373 * later merging. 6374 */ 6375 if (!ext_adv && (type == LE_ADV_IND || 6376 type == LE_ADV_SCAN_IND)) { 6377 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6378 rssi, flags, data, len); 6379 return; 6380 } 6381 6382 /* The advertising reports cannot be merged, so clear 6383 * the pending report and send out a device found event. 6384 */ 6385 clear_pending_adv_report(hdev); 6386 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6387 rssi, flags, data, len, NULL, 0, 0); 6388 return; 6389 } 6390 6391 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6392 * the new event is a SCAN_RSP. We can therefore proceed with 6393 * sending a merged device found event. 6394 */ 6395 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6396 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6397 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6398 clear_pending_adv_report(hdev); 6399 } 6400 6401 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6402 struct sk_buff *skb) 6403 { 6404 struct hci_ev_le_advertising_report *ev = data; 6405 u64 instant = jiffies; 6406 6407 if (!ev->num) 6408 return; 6409 6410 hci_dev_lock(hdev); 6411 6412 while (ev->num--) { 6413 struct hci_ev_le_advertising_info *info; 6414 s8 rssi; 6415 6416 info = hci_le_ev_skb_pull(hdev, skb, 6417 HCI_EV_LE_ADVERTISING_REPORT, 6418 sizeof(*info)); 6419 if (!info) 6420 break; 6421 6422 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6423 info->length + 1)) 6424 break; 6425 6426 if (info->length <= HCI_MAX_AD_LENGTH) { 6427 rssi = info->data[info->length]; 6428 process_adv_report(hdev, info->type, &info->bdaddr, 6429 info->bdaddr_type, NULL, 0, rssi, 6430 info->data, info->length, false, 6431 false, instant); 6432 } else { 6433 bt_dev_err(hdev, "Dropping invalid advertising data"); 6434 } 6435 } 6436 6437 hci_dev_unlock(hdev); 6438 } 6439 6440 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6441 { 6442 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6443 switch (evt_type) { 6444 case LE_LEGACY_ADV_IND: 6445 return LE_ADV_IND; 6446 case LE_LEGACY_ADV_DIRECT_IND: 6447 return LE_ADV_DIRECT_IND; 6448 case LE_LEGACY_ADV_SCAN_IND: 6449 return LE_ADV_SCAN_IND; 6450 case LE_LEGACY_NONCONN_IND: 6451 return LE_ADV_NONCONN_IND; 6452 case LE_LEGACY_SCAN_RSP_ADV: 6453 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6454 return LE_ADV_SCAN_RSP; 6455 } 6456 6457 goto invalid; 6458 } 6459 6460 if (evt_type & LE_EXT_ADV_CONN_IND) { 6461 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6462 return LE_ADV_DIRECT_IND; 6463 6464 return LE_ADV_IND; 6465 } 6466 6467 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6468 return LE_ADV_SCAN_RSP; 6469 6470 if (evt_type & LE_EXT_ADV_SCAN_IND) 6471 return LE_ADV_SCAN_IND; 6472 6473 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6474 evt_type & LE_EXT_ADV_DIRECT_IND) 6475 return LE_ADV_NONCONN_IND; 6476 6477 invalid: 6478 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6479 evt_type); 6480 6481 return LE_ADV_INVALID; 6482 } 6483 6484 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6485 struct sk_buff *skb) 6486 { 6487 struct hci_ev_le_ext_adv_report *ev = data; 6488 u64 instant = jiffies; 6489 6490 if (!ev->num) 6491 return; 6492 6493 hci_dev_lock(hdev); 6494 6495 while (ev->num--) { 6496 struct hci_ev_le_ext_adv_info *info; 6497 u8 legacy_evt_type; 6498 u16 evt_type; 6499 6500 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6501 sizeof(*info)); 6502 if (!info) 6503 break; 6504 6505 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6506 info->length)) 6507 break; 6508 6509 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6510 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6511 if (legacy_evt_type != LE_ADV_INVALID) { 6512 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6513 info->bdaddr_type, NULL, 0, 6514 info->rssi, info->data, info->length, 6515 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6516 false, instant); 6517 } 6518 } 6519 6520 hci_dev_unlock(hdev); 6521 } 6522 6523 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6524 { 6525 struct hci_cp_le_pa_term_sync cp; 6526 6527 memset(&cp, 0, sizeof(cp)); 6528 cp.handle = handle; 6529 6530 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6531 } 6532 6533 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6534 struct sk_buff *skb) 6535 { 6536 struct hci_ev_le_pa_sync_established *ev = data; 6537 int mask = hdev->link_mode; 6538 __u8 flags = 0; 6539 6540 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6541 6542 if (ev->status) 6543 return; 6544 6545 hci_dev_lock(hdev); 6546 6547 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6548 6549 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6550 if (!(mask & HCI_LM_ACCEPT)) 6551 hci_le_pa_term_sync(hdev, ev->handle); 6552 6553 hci_dev_unlock(hdev); 6554 } 6555 6556 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6557 struct sk_buff *skb) 6558 { 6559 struct hci_ev_le_remote_feat_complete *ev = data; 6560 struct hci_conn *conn; 6561 6562 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6563 6564 hci_dev_lock(hdev); 6565 6566 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6567 if (conn) { 6568 if (!ev->status) 6569 memcpy(conn->features[0], ev->features, 8); 6570 6571 if (conn->state == BT_CONFIG) { 6572 __u8 status; 6573 6574 /* If the local controller supports peripheral-initiated 6575 * features exchange, but the remote controller does 6576 * not, then it is possible that the error code 0x1a 6577 * for unsupported remote feature gets returned. 6578 * 6579 * In this specific case, allow the connection to 6580 * transition into connected state and mark it as 6581 * successful. 6582 */ 6583 if (!conn->out && ev->status == 0x1a && 6584 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6585 status = 0x00; 6586 else 6587 status = ev->status; 6588 6589 conn->state = BT_CONNECTED; 6590 hci_connect_cfm(conn, status); 6591 hci_conn_drop(conn); 6592 } 6593 } 6594 6595 hci_dev_unlock(hdev); 6596 } 6597 6598 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6599 struct sk_buff *skb) 6600 { 6601 struct hci_ev_le_ltk_req *ev = data; 6602 struct hci_cp_le_ltk_reply cp; 6603 struct hci_cp_le_ltk_neg_reply neg; 6604 struct hci_conn *conn; 6605 struct smp_ltk *ltk; 6606 6607 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6608 6609 hci_dev_lock(hdev); 6610 6611 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6612 if (conn == NULL) 6613 goto not_found; 6614 6615 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6616 if (!ltk) 6617 goto not_found; 6618 6619 if (smp_ltk_is_sc(ltk)) { 6620 /* With SC both EDiv and Rand are set to zero */ 6621 if (ev->ediv || ev->rand) 6622 goto not_found; 6623 } else { 6624 /* For non-SC keys check that EDiv and Rand match */ 6625 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6626 goto not_found; 6627 } 6628 6629 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6630 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6631 cp.handle = cpu_to_le16(conn->handle); 6632 6633 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6634 6635 conn->enc_key_size = ltk->enc_size; 6636 6637 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6638 6639 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6640 * temporary key used to encrypt a connection following 6641 * pairing. It is used during the Encrypted Session Setup to 6642 * distribute the keys. Later, security can be re-established 6643 * using a distributed LTK. 6644 */ 6645 if (ltk->type == SMP_STK) { 6646 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6647 list_del_rcu(<k->list); 6648 kfree_rcu(ltk, rcu); 6649 } else { 6650 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6651 } 6652 6653 hci_dev_unlock(hdev); 6654 6655 return; 6656 6657 not_found: 6658 neg.handle = ev->handle; 6659 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6660 hci_dev_unlock(hdev); 6661 } 6662 6663 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6664 u8 reason) 6665 { 6666 struct hci_cp_le_conn_param_req_neg_reply cp; 6667 6668 cp.handle = cpu_to_le16(handle); 6669 cp.reason = reason; 6670 6671 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6672 &cp); 6673 } 6674 6675 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6676 struct sk_buff *skb) 6677 { 6678 struct hci_ev_le_remote_conn_param_req *ev = data; 6679 struct hci_cp_le_conn_param_req_reply cp; 6680 struct hci_conn *hcon; 6681 u16 handle, min, max, latency, timeout; 6682 6683 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6684 6685 handle = le16_to_cpu(ev->handle); 6686 min = le16_to_cpu(ev->interval_min); 6687 max = le16_to_cpu(ev->interval_max); 6688 latency = le16_to_cpu(ev->latency); 6689 timeout = le16_to_cpu(ev->timeout); 6690 6691 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6692 if (!hcon || hcon->state != BT_CONNECTED) 6693 return send_conn_param_neg_reply(hdev, handle, 6694 HCI_ERROR_UNKNOWN_CONN_ID); 6695 6696 if (hci_check_conn_params(min, max, latency, timeout)) 6697 return send_conn_param_neg_reply(hdev, handle, 6698 HCI_ERROR_INVALID_LL_PARAMS); 6699 6700 if (hcon->role == HCI_ROLE_MASTER) { 6701 struct hci_conn_params *params; 6702 u8 store_hint; 6703 6704 hci_dev_lock(hdev); 6705 6706 params = hci_conn_params_lookup(hdev, &hcon->dst, 6707 hcon->dst_type); 6708 if (params) { 6709 params->conn_min_interval = min; 6710 params->conn_max_interval = max; 6711 params->conn_latency = latency; 6712 params->supervision_timeout = timeout; 6713 store_hint = 0x01; 6714 } else { 6715 store_hint = 0x00; 6716 } 6717 6718 hci_dev_unlock(hdev); 6719 6720 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6721 store_hint, min, max, latency, timeout); 6722 } 6723 6724 cp.handle = ev->handle; 6725 cp.interval_min = ev->interval_min; 6726 cp.interval_max = ev->interval_max; 6727 cp.latency = ev->latency; 6728 cp.timeout = ev->timeout; 6729 cp.min_ce_len = 0; 6730 cp.max_ce_len = 0; 6731 6732 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6733 } 6734 6735 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6736 struct sk_buff *skb) 6737 { 6738 struct hci_ev_le_direct_adv_report *ev = data; 6739 u64 instant = jiffies; 6740 int i; 6741 6742 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6743 flex_array_size(ev, info, ev->num))) 6744 return; 6745 6746 if (!ev->num) 6747 return; 6748 6749 hci_dev_lock(hdev); 6750 6751 for (i = 0; i < ev->num; i++) { 6752 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6753 6754 process_adv_report(hdev, info->type, &info->bdaddr, 6755 info->bdaddr_type, &info->direct_addr, 6756 info->direct_addr_type, info->rssi, NULL, 0, 6757 false, false, instant); 6758 } 6759 6760 hci_dev_unlock(hdev); 6761 } 6762 6763 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6764 struct sk_buff *skb) 6765 { 6766 struct hci_ev_le_phy_update_complete *ev = data; 6767 struct hci_conn *conn; 6768 6769 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6770 6771 if (ev->status) 6772 return; 6773 6774 hci_dev_lock(hdev); 6775 6776 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6777 if (!conn) 6778 goto unlock; 6779 6780 conn->le_tx_phy = ev->tx_phy; 6781 conn->le_rx_phy = ev->rx_phy; 6782 6783 unlock: 6784 hci_dev_unlock(hdev); 6785 } 6786 6787 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6788 struct sk_buff *skb) 6789 { 6790 struct hci_evt_le_cis_established *ev = data; 6791 struct hci_conn *conn; 6792 struct bt_iso_qos *qos; 6793 u16 handle = __le16_to_cpu(ev->handle); 6794 6795 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6796 6797 hci_dev_lock(hdev); 6798 6799 conn = hci_conn_hash_lookup_handle(hdev, handle); 6800 if (!conn) { 6801 bt_dev_err(hdev, 6802 "Unable to find connection with handle 0x%4.4x", 6803 handle); 6804 goto unlock; 6805 } 6806 6807 if (conn->type != ISO_LINK) { 6808 bt_dev_err(hdev, 6809 "Invalid connection link type handle 0x%4.4x", 6810 handle); 6811 goto unlock; 6812 } 6813 6814 qos = &conn->iso_qos; 6815 6816 /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */ 6817 qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250; 6818 qos->ucast.out.interval = qos->ucast.in.interval; 6819 6820 switch (conn->role) { 6821 case HCI_ROLE_SLAVE: 6822 /* Convert Transport Latency (us) to Latency (msec) */ 6823 qos->ucast.in.latency = 6824 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6825 1000); 6826 qos->ucast.out.latency = 6827 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6828 1000); 6829 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6830 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6831 qos->ucast.in.phy = ev->c_phy; 6832 qos->ucast.out.phy = ev->p_phy; 6833 break; 6834 case HCI_ROLE_MASTER: 6835 /* Convert Transport Latency (us) to Latency (msec) */ 6836 qos->ucast.out.latency = 6837 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6838 1000); 6839 qos->ucast.in.latency = 6840 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6841 1000); 6842 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6843 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6844 qos->ucast.out.phy = ev->c_phy; 6845 qos->ucast.in.phy = ev->p_phy; 6846 break; 6847 } 6848 6849 if (!ev->status) { 6850 conn->state = BT_CONNECTED; 6851 hci_debugfs_create_conn(conn); 6852 hci_conn_add_sysfs(conn); 6853 hci_iso_setup_path(conn); 6854 goto unlock; 6855 } 6856 6857 hci_connect_cfm(conn, ev->status); 6858 hci_conn_del(conn); 6859 6860 unlock: 6861 hci_dev_unlock(hdev); 6862 } 6863 6864 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6865 { 6866 struct hci_cp_le_reject_cis cp; 6867 6868 memset(&cp, 0, sizeof(cp)); 6869 cp.handle = handle; 6870 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6871 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6872 } 6873 6874 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6875 { 6876 struct hci_cp_le_accept_cis cp; 6877 6878 memset(&cp, 0, sizeof(cp)); 6879 cp.handle = handle; 6880 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6881 } 6882 6883 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6884 struct sk_buff *skb) 6885 { 6886 struct hci_evt_le_cis_req *ev = data; 6887 u16 acl_handle, cis_handle; 6888 struct hci_conn *acl, *cis; 6889 int mask; 6890 __u8 flags = 0; 6891 6892 acl_handle = __le16_to_cpu(ev->acl_handle); 6893 cis_handle = __le16_to_cpu(ev->cis_handle); 6894 6895 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6896 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6897 6898 hci_dev_lock(hdev); 6899 6900 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6901 if (!acl) 6902 goto unlock; 6903 6904 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 6905 if (!(mask & HCI_LM_ACCEPT)) { 6906 hci_le_reject_cis(hdev, ev->cis_handle); 6907 goto unlock; 6908 } 6909 6910 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6911 if (!cis) { 6912 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE); 6913 if (!cis) { 6914 hci_le_reject_cis(hdev, ev->cis_handle); 6915 goto unlock; 6916 } 6917 cis->handle = cis_handle; 6918 } 6919 6920 cis->iso_qos.ucast.cig = ev->cig_id; 6921 cis->iso_qos.ucast.cis = ev->cis_id; 6922 6923 if (!(flags & HCI_PROTO_DEFER)) { 6924 hci_le_accept_cis(hdev, ev->cis_handle); 6925 } else { 6926 cis->state = BT_CONNECT2; 6927 hci_connect_cfm(cis, 0); 6928 } 6929 6930 unlock: 6931 hci_dev_unlock(hdev); 6932 } 6933 6934 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6935 struct sk_buff *skb) 6936 { 6937 struct hci_evt_le_create_big_complete *ev = data; 6938 struct hci_conn *conn; 6939 6940 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6941 6942 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6943 flex_array_size(ev, bis_handle, ev->num_bis))) 6944 return; 6945 6946 hci_dev_lock(hdev); 6947 6948 conn = hci_conn_hash_lookup_big(hdev, ev->handle); 6949 if (!conn) 6950 goto unlock; 6951 6952 if (conn->type != ISO_LINK) { 6953 bt_dev_err(hdev, 6954 "Invalid connection link type handle 0x%2.2x", 6955 ev->handle); 6956 goto unlock; 6957 } 6958 6959 if (ev->num_bis) 6960 conn->handle = __le16_to_cpu(ev->bis_handle[0]); 6961 6962 if (!ev->status) { 6963 conn->state = BT_CONNECTED; 6964 hci_debugfs_create_conn(conn); 6965 hci_conn_add_sysfs(conn); 6966 hci_iso_setup_path(conn); 6967 goto unlock; 6968 } 6969 6970 hci_connect_cfm(conn, ev->status); 6971 hci_conn_del(conn); 6972 6973 unlock: 6974 hci_dev_unlock(hdev); 6975 } 6976 6977 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6978 struct sk_buff *skb) 6979 { 6980 struct hci_evt_le_big_sync_estabilished *ev = data; 6981 struct hci_conn *bis; 6982 int i; 6983 6984 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6985 6986 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 6987 flex_array_size(ev, bis, ev->num_bis))) 6988 return; 6989 6990 if (ev->status) 6991 return; 6992 6993 hci_dev_lock(hdev); 6994 6995 for (i = 0; i < ev->num_bis; i++) { 6996 u16 handle = le16_to_cpu(ev->bis[i]); 6997 __le32 interval; 6998 6999 bis = hci_conn_hash_lookup_handle(hdev, handle); 7000 if (!bis) { 7001 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 7002 HCI_ROLE_SLAVE); 7003 if (!bis) 7004 continue; 7005 bis->handle = handle; 7006 } 7007 7008 bis->iso_qos.bcast.big = ev->handle; 7009 memset(&interval, 0, sizeof(interval)); 7010 memcpy(&interval, ev->latency, sizeof(ev->latency)); 7011 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 7012 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 7013 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 7014 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 7015 7016 hci_iso_setup_path(bis); 7017 } 7018 7019 hci_dev_unlock(hdev); 7020 } 7021 7022 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7023 struct sk_buff *skb) 7024 { 7025 struct hci_evt_le_big_info_adv_report *ev = data; 7026 int mask = hdev->link_mode; 7027 __u8 flags = 0; 7028 7029 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7030 7031 hci_dev_lock(hdev); 7032 7033 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 7034 if (!(mask & HCI_LM_ACCEPT)) 7035 hci_le_pa_term_sync(hdev, ev->sync_handle); 7036 7037 hci_dev_unlock(hdev); 7038 } 7039 7040 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7041 [_op] = { \ 7042 .func = _func, \ 7043 .min_len = _min_len, \ 7044 .max_len = _max_len, \ 7045 } 7046 7047 #define HCI_LE_EV(_op, _func, _len) \ 7048 HCI_LE_EV_VL(_op, _func, _len, _len) 7049 7050 #define HCI_LE_EV_STATUS(_op, _func) \ 7051 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7052 7053 /* Entries in this table shall have their position according to the subevent 7054 * opcode they handle so the use of the macros above is recommend since it does 7055 * attempt to initialize at its proper index using Designated Initializers that 7056 * way events without a callback function can be ommited. 7057 */ 7058 static const struct hci_le_ev { 7059 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7060 u16 min_len; 7061 u16 max_len; 7062 } hci_le_ev_table[U8_MAX + 1] = { 7063 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7064 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7065 sizeof(struct hci_ev_le_conn_complete)), 7066 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7067 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7068 sizeof(struct hci_ev_le_advertising_report), 7069 HCI_MAX_EVENT_SIZE), 7070 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7071 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7072 hci_le_conn_update_complete_evt, 7073 sizeof(struct hci_ev_le_conn_update_complete)), 7074 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7075 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7076 hci_le_remote_feat_complete_evt, 7077 sizeof(struct hci_ev_le_remote_feat_complete)), 7078 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7079 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7080 sizeof(struct hci_ev_le_ltk_req)), 7081 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7082 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7083 hci_le_remote_conn_param_req_evt, 7084 sizeof(struct hci_ev_le_remote_conn_param_req)), 7085 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7086 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7087 hci_le_enh_conn_complete_evt, 7088 sizeof(struct hci_ev_le_enh_conn_complete)), 7089 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7090 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7091 sizeof(struct hci_ev_le_direct_adv_report), 7092 HCI_MAX_EVENT_SIZE), 7093 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7094 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7095 sizeof(struct hci_ev_le_phy_update_complete)), 7096 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7097 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7098 sizeof(struct hci_ev_le_ext_adv_report), 7099 HCI_MAX_EVENT_SIZE), 7100 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7101 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7102 hci_le_pa_sync_estabilished_evt, 7103 sizeof(struct hci_ev_le_pa_sync_established)), 7104 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7105 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7106 sizeof(struct hci_evt_le_ext_adv_set_term)), 7107 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7108 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7109 sizeof(struct hci_evt_le_cis_established)), 7110 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7111 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7112 sizeof(struct hci_evt_le_cis_req)), 7113 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7114 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7115 hci_le_create_big_complete_evt, 7116 sizeof(struct hci_evt_le_create_big_complete), 7117 HCI_MAX_EVENT_SIZE), 7118 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7119 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7120 hci_le_big_sync_established_evt, 7121 sizeof(struct hci_evt_le_big_sync_estabilished), 7122 HCI_MAX_EVENT_SIZE), 7123 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7124 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7125 hci_le_big_info_adv_report_evt, 7126 sizeof(struct hci_evt_le_big_info_adv_report), 7127 HCI_MAX_EVENT_SIZE), 7128 }; 7129 7130 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7131 struct sk_buff *skb, u16 *opcode, u8 *status, 7132 hci_req_complete_t *req_complete, 7133 hci_req_complete_skb_t *req_complete_skb) 7134 { 7135 struct hci_ev_le_meta *ev = data; 7136 const struct hci_le_ev *subev; 7137 7138 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7139 7140 /* Only match event if command OGF is for LE */ 7141 if (hdev->sent_cmd && 7142 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 && 7143 hci_skb_event(hdev->sent_cmd) == ev->subevent) { 7144 *opcode = hci_skb_opcode(hdev->sent_cmd); 7145 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7146 req_complete_skb); 7147 } 7148 7149 subev = &hci_le_ev_table[ev->subevent]; 7150 if (!subev->func) 7151 return; 7152 7153 if (skb->len < subev->min_len) { 7154 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7155 ev->subevent, skb->len, subev->min_len); 7156 return; 7157 } 7158 7159 /* Just warn if the length is over max_len size it still be 7160 * possible to partially parse the event so leave to callback to 7161 * decide if that is acceptable. 7162 */ 7163 if (skb->len > subev->max_len) 7164 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7165 ev->subevent, skb->len, subev->max_len); 7166 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7167 if (!data) 7168 return; 7169 7170 subev->func(hdev, data, skb); 7171 } 7172 7173 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7174 u8 event, struct sk_buff *skb) 7175 { 7176 struct hci_ev_cmd_complete *ev; 7177 struct hci_event_hdr *hdr; 7178 7179 if (!skb) 7180 return false; 7181 7182 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7183 if (!hdr) 7184 return false; 7185 7186 if (event) { 7187 if (hdr->evt != event) 7188 return false; 7189 return true; 7190 } 7191 7192 /* Check if request ended in Command Status - no way to retrieve 7193 * any extra parameters in this case. 7194 */ 7195 if (hdr->evt == HCI_EV_CMD_STATUS) 7196 return false; 7197 7198 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7199 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7200 hdr->evt); 7201 return false; 7202 } 7203 7204 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7205 if (!ev) 7206 return false; 7207 7208 if (opcode != __le16_to_cpu(ev->opcode)) { 7209 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7210 __le16_to_cpu(ev->opcode)); 7211 return false; 7212 } 7213 7214 return true; 7215 } 7216 7217 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7218 struct sk_buff *skb) 7219 { 7220 struct hci_ev_le_advertising_info *adv; 7221 struct hci_ev_le_direct_adv_info *direct_adv; 7222 struct hci_ev_le_ext_adv_info *ext_adv; 7223 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7224 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7225 7226 hci_dev_lock(hdev); 7227 7228 /* If we are currently suspended and this is the first BT event seen, 7229 * save the wake reason associated with the event. 7230 */ 7231 if (!hdev->suspended || hdev->wake_reason) 7232 goto unlock; 7233 7234 /* Default to remote wake. Values for wake_reason are documented in the 7235 * Bluez mgmt api docs. 7236 */ 7237 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7238 7239 /* Once configured for remote wakeup, we should only wake up for 7240 * reconnections. It's useful to see which device is waking us up so 7241 * keep track of the bdaddr of the connection event that woke us up. 7242 */ 7243 if (event == HCI_EV_CONN_REQUEST) { 7244 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7245 hdev->wake_addr_type = BDADDR_BREDR; 7246 } else if (event == HCI_EV_CONN_COMPLETE) { 7247 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7248 hdev->wake_addr_type = BDADDR_BREDR; 7249 } else if (event == HCI_EV_LE_META) { 7250 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7251 u8 subevent = le_ev->subevent; 7252 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7253 u8 num_reports = *ptr; 7254 7255 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7256 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7257 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7258 num_reports) { 7259 adv = (void *)(ptr + 1); 7260 direct_adv = (void *)(ptr + 1); 7261 ext_adv = (void *)(ptr + 1); 7262 7263 switch (subevent) { 7264 case HCI_EV_LE_ADVERTISING_REPORT: 7265 bacpy(&hdev->wake_addr, &adv->bdaddr); 7266 hdev->wake_addr_type = adv->bdaddr_type; 7267 break; 7268 case HCI_EV_LE_DIRECT_ADV_REPORT: 7269 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7270 hdev->wake_addr_type = direct_adv->bdaddr_type; 7271 break; 7272 case HCI_EV_LE_EXT_ADV_REPORT: 7273 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7274 hdev->wake_addr_type = ext_adv->bdaddr_type; 7275 break; 7276 } 7277 } 7278 } else { 7279 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7280 } 7281 7282 unlock: 7283 hci_dev_unlock(hdev); 7284 } 7285 7286 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7287 [_op] = { \ 7288 .req = false, \ 7289 .func = _func, \ 7290 .min_len = _min_len, \ 7291 .max_len = _max_len, \ 7292 } 7293 7294 #define HCI_EV(_op, _func, _len) \ 7295 HCI_EV_VL(_op, _func, _len, _len) 7296 7297 #define HCI_EV_STATUS(_op, _func) \ 7298 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7299 7300 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7301 [_op] = { \ 7302 .req = true, \ 7303 .func_req = _func, \ 7304 .min_len = _min_len, \ 7305 .max_len = _max_len, \ 7306 } 7307 7308 #define HCI_EV_REQ(_op, _func, _len) \ 7309 HCI_EV_REQ_VL(_op, _func, _len, _len) 7310 7311 /* Entries in this table shall have their position according to the event opcode 7312 * they handle so the use of the macros above is recommend since it does attempt 7313 * to initialize at its proper index using Designated Initializers that way 7314 * events without a callback function don't have entered. 7315 */ 7316 static const struct hci_ev { 7317 bool req; 7318 union { 7319 void (*func)(struct hci_dev *hdev, void *data, 7320 struct sk_buff *skb); 7321 void (*func_req)(struct hci_dev *hdev, void *data, 7322 struct sk_buff *skb, u16 *opcode, u8 *status, 7323 hci_req_complete_t *req_complete, 7324 hci_req_complete_skb_t *req_complete_skb); 7325 }; 7326 u16 min_len; 7327 u16 max_len; 7328 } hci_ev_table[U8_MAX + 1] = { 7329 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7330 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7331 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7332 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7333 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7334 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7335 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7336 sizeof(struct hci_ev_conn_complete)), 7337 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7338 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7339 sizeof(struct hci_ev_conn_request)), 7340 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7341 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7342 sizeof(struct hci_ev_disconn_complete)), 7343 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7344 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7345 sizeof(struct hci_ev_auth_complete)), 7346 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7347 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7348 sizeof(struct hci_ev_remote_name)), 7349 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7350 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7351 sizeof(struct hci_ev_encrypt_change)), 7352 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7353 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7354 hci_change_link_key_complete_evt, 7355 sizeof(struct hci_ev_change_link_key_complete)), 7356 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7357 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7358 sizeof(struct hci_ev_remote_features)), 7359 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7360 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7361 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7362 /* [0x0f = HCI_EV_CMD_STATUS] */ 7363 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7364 sizeof(struct hci_ev_cmd_status)), 7365 /* [0x10 = HCI_EV_CMD_STATUS] */ 7366 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7367 sizeof(struct hci_ev_hardware_error)), 7368 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7369 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7370 sizeof(struct hci_ev_role_change)), 7371 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7372 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7373 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7374 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7375 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7376 sizeof(struct hci_ev_mode_change)), 7377 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7378 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7379 sizeof(struct hci_ev_pin_code_req)), 7380 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7381 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7382 sizeof(struct hci_ev_link_key_req)), 7383 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7384 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7385 sizeof(struct hci_ev_link_key_notify)), 7386 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7387 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7388 sizeof(struct hci_ev_clock_offset)), 7389 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7390 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7391 sizeof(struct hci_ev_pkt_type_change)), 7392 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7393 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7394 sizeof(struct hci_ev_pscan_rep_mode)), 7395 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7396 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7397 hci_inquiry_result_with_rssi_evt, 7398 sizeof(struct hci_ev_inquiry_result_rssi), 7399 HCI_MAX_EVENT_SIZE), 7400 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7401 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7402 sizeof(struct hci_ev_remote_ext_features)), 7403 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7404 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7405 sizeof(struct hci_ev_sync_conn_complete)), 7406 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7407 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7408 hci_extended_inquiry_result_evt, 7409 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7410 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7411 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7412 sizeof(struct hci_ev_key_refresh_complete)), 7413 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7414 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7415 sizeof(struct hci_ev_io_capa_request)), 7416 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7417 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7418 sizeof(struct hci_ev_io_capa_reply)), 7419 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7420 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7421 sizeof(struct hci_ev_user_confirm_req)), 7422 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7423 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7424 sizeof(struct hci_ev_user_passkey_req)), 7425 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7426 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7427 sizeof(struct hci_ev_remote_oob_data_request)), 7428 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7429 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7430 sizeof(struct hci_ev_simple_pair_complete)), 7431 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7432 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7433 sizeof(struct hci_ev_user_passkey_notify)), 7434 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7435 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7436 sizeof(struct hci_ev_keypress_notify)), 7437 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7438 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7439 sizeof(struct hci_ev_remote_host_features)), 7440 /* [0x3e = HCI_EV_LE_META] */ 7441 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7442 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7443 #if IS_ENABLED(CONFIG_BT_HS) 7444 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */ 7445 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt, 7446 sizeof(struct hci_ev_phy_link_complete)), 7447 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */ 7448 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt, 7449 sizeof(struct hci_ev_channel_selected)), 7450 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */ 7451 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE, 7452 hci_disconn_loglink_complete_evt, 7453 sizeof(struct hci_ev_disconn_logical_link_complete)), 7454 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */ 7455 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt, 7456 sizeof(struct hci_ev_logical_link_complete)), 7457 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */ 7458 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE, 7459 hci_disconn_phylink_complete_evt, 7460 sizeof(struct hci_ev_disconn_phy_link_complete)), 7461 #endif 7462 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */ 7463 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt, 7464 sizeof(struct hci_ev_num_comp_blocks)), 7465 /* [0xff = HCI_EV_VENDOR] */ 7466 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7467 }; 7468 7469 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7470 u16 *opcode, u8 *status, 7471 hci_req_complete_t *req_complete, 7472 hci_req_complete_skb_t *req_complete_skb) 7473 { 7474 const struct hci_ev *ev = &hci_ev_table[event]; 7475 void *data; 7476 7477 if (!ev->func) 7478 return; 7479 7480 if (skb->len < ev->min_len) { 7481 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7482 event, skb->len, ev->min_len); 7483 return; 7484 } 7485 7486 /* Just warn if the length is over max_len size it still be 7487 * possible to partially parse the event so leave to callback to 7488 * decide if that is acceptable. 7489 */ 7490 if (skb->len > ev->max_len) 7491 bt_dev_warn_ratelimited(hdev, 7492 "unexpected event 0x%2.2x length: %u > %u", 7493 event, skb->len, ev->max_len); 7494 7495 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7496 if (!data) 7497 return; 7498 7499 if (ev->req) 7500 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7501 req_complete_skb); 7502 else 7503 ev->func(hdev, data, skb); 7504 } 7505 7506 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7507 { 7508 struct hci_event_hdr *hdr = (void *) skb->data; 7509 hci_req_complete_t req_complete = NULL; 7510 hci_req_complete_skb_t req_complete_skb = NULL; 7511 struct sk_buff *orig_skb = NULL; 7512 u8 status = 0, event, req_evt = 0; 7513 u16 opcode = HCI_OP_NOP; 7514 7515 if (skb->len < sizeof(*hdr)) { 7516 bt_dev_err(hdev, "Malformed HCI Event"); 7517 goto done; 7518 } 7519 7520 kfree_skb(hdev->recv_event); 7521 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7522 7523 event = hdr->evt; 7524 if (!event) { 7525 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7526 event); 7527 goto done; 7528 } 7529 7530 /* Only match event if command OGF is not for LE */ 7531 if (hdev->sent_cmd && 7532 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 && 7533 hci_skb_event(hdev->sent_cmd) == event) { 7534 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd), 7535 status, &req_complete, &req_complete_skb); 7536 req_evt = event; 7537 } 7538 7539 /* If it looks like we might end up having to call 7540 * req_complete_skb, store a pristine copy of the skb since the 7541 * various handlers may modify the original one through 7542 * skb_pull() calls, etc. 7543 */ 7544 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7545 event == HCI_EV_CMD_COMPLETE) 7546 orig_skb = skb_clone(skb, GFP_KERNEL); 7547 7548 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7549 7550 /* Store wake reason if we're suspended */ 7551 hci_store_wake_reason(hdev, event, skb); 7552 7553 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7554 7555 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7556 &req_complete_skb); 7557 7558 if (req_complete) { 7559 req_complete(hdev, status, opcode); 7560 } else if (req_complete_skb) { 7561 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7562 kfree_skb(orig_skb); 7563 orig_skb = NULL; 7564 } 7565 req_complete_skb(hdev, status, opcode, orig_skb); 7566 } 7567 7568 done: 7569 kfree_skb(orig_skb); 7570 kfree_skb(skb); 7571 hdev->stat.evt_rx++; 7572 } 7573