1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 Copyright 2023 NXP 5 6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License version 2 as 10 published by the Free Software Foundation; 11 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 23 SOFTWARE IS DISCLAIMED. 24 */ 25 26 /* Bluetooth HCI event handling. */ 27 28 #include <asm/unaligned.h> 29 30 #include <net/bluetooth/bluetooth.h> 31 #include <net/bluetooth/hci_core.h> 32 #include <net/bluetooth/mgmt.h> 33 34 #include "hci_request.h" 35 #include "hci_debugfs.h" 36 #include "a2mp.h" 37 #include "amp.h" 38 #include "smp.h" 39 #include "msft.h" 40 #include "eir.h" 41 42 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ 43 "\x00\x00\x00\x00\x00\x00\x00\x00" 44 45 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000) 46 47 /* Handle HCI Event packets */ 48 49 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 50 u8 ev, size_t len) 51 { 52 void *data; 53 54 data = skb_pull_data(skb, len); 55 if (!data) 56 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev); 57 58 return data; 59 } 60 61 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 62 u16 op, size_t len) 63 { 64 void *data; 65 66 data = skb_pull_data(skb, len); 67 if (!data) 68 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op); 69 70 return data; 71 } 72 73 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 74 u8 ev, size_t len) 75 { 76 void *data; 77 78 data = skb_pull_data(skb, len); 79 if (!data) 80 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev); 81 82 return data; 83 } 84 85 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data, 86 struct sk_buff *skb) 87 { 88 struct hci_ev_status *rp = data; 89 90 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 91 92 /* It is possible that we receive Inquiry Complete event right 93 * before we receive Inquiry Cancel Command Complete event, in 94 * which case the latter event should have status of Command 95 * Disallowed (0x0c). This should not be treated as error, since 96 * we actually achieve what Inquiry Cancel wants to achieve, 97 * which is to end the last Inquiry session. 98 */ 99 if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) { 100 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command"); 101 rp->status = 0x00; 102 } 103 104 if (rp->status) 105 return rp->status; 106 107 clear_bit(HCI_INQUIRY, &hdev->flags); 108 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 109 wake_up_bit(&hdev->flags, HCI_INQUIRY); 110 111 hci_dev_lock(hdev); 112 /* Set discovery state to stopped if we're not doing LE active 113 * scanning. 114 */ 115 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 116 hdev->le_scan_type != LE_SCAN_ACTIVE) 117 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 118 hci_dev_unlock(hdev); 119 120 hci_conn_check_pending(hdev); 121 122 return rp->status; 123 } 124 125 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data, 126 struct sk_buff *skb) 127 { 128 struct hci_ev_status *rp = data; 129 130 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 131 132 if (rp->status) 133 return rp->status; 134 135 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ); 136 137 return rp->status; 138 } 139 140 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data, 141 struct sk_buff *skb) 142 { 143 struct hci_ev_status *rp = data; 144 145 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 146 147 if (rp->status) 148 return rp->status; 149 150 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); 151 152 hci_conn_check_pending(hdev); 153 154 return rp->status; 155 } 156 157 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data, 158 struct sk_buff *skb) 159 { 160 struct hci_ev_status *rp = data; 161 162 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 163 164 return rp->status; 165 } 166 167 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data, 168 struct sk_buff *skb) 169 { 170 struct hci_rp_role_discovery *rp = data; 171 struct hci_conn *conn; 172 173 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 174 175 if (rp->status) 176 return rp->status; 177 178 hci_dev_lock(hdev); 179 180 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 181 if (conn) 182 conn->role = rp->role; 183 184 hci_dev_unlock(hdev); 185 186 return rp->status; 187 } 188 189 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data, 190 struct sk_buff *skb) 191 { 192 struct hci_rp_read_link_policy *rp = data; 193 struct hci_conn *conn; 194 195 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 196 197 if (rp->status) 198 return rp->status; 199 200 hci_dev_lock(hdev); 201 202 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 203 if (conn) 204 conn->link_policy = __le16_to_cpu(rp->policy); 205 206 hci_dev_unlock(hdev); 207 208 return rp->status; 209 } 210 211 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data, 212 struct sk_buff *skb) 213 { 214 struct hci_rp_write_link_policy *rp = data; 215 struct hci_conn *conn; 216 void *sent; 217 218 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 219 220 if (rp->status) 221 return rp->status; 222 223 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY); 224 if (!sent) 225 return rp->status; 226 227 hci_dev_lock(hdev); 228 229 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 230 if (conn) 231 conn->link_policy = get_unaligned_le16(sent + 2); 232 233 hci_dev_unlock(hdev); 234 235 return rp->status; 236 } 237 238 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data, 239 struct sk_buff *skb) 240 { 241 struct hci_rp_read_def_link_policy *rp = data; 242 243 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 244 245 if (rp->status) 246 return rp->status; 247 248 hdev->link_policy = __le16_to_cpu(rp->policy); 249 250 return rp->status; 251 } 252 253 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data, 254 struct sk_buff *skb) 255 { 256 struct hci_ev_status *rp = data; 257 void *sent; 258 259 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 260 261 if (rp->status) 262 return rp->status; 263 264 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY); 265 if (!sent) 266 return rp->status; 267 268 hdev->link_policy = get_unaligned_le16(sent); 269 270 return rp->status; 271 } 272 273 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb) 274 { 275 struct hci_ev_status *rp = data; 276 277 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 278 279 clear_bit(HCI_RESET, &hdev->flags); 280 281 if (rp->status) 282 return rp->status; 283 284 /* Reset all non-persistent flags */ 285 hci_dev_clear_volatile_flags(hdev); 286 287 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 288 289 hdev->inq_tx_power = HCI_TX_POWER_INVALID; 290 hdev->adv_tx_power = HCI_TX_POWER_INVALID; 291 292 memset(hdev->adv_data, 0, sizeof(hdev->adv_data)); 293 hdev->adv_data_len = 0; 294 295 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data)); 296 hdev->scan_rsp_data_len = 0; 297 298 hdev->le_scan_type = LE_SCAN_PASSIVE; 299 300 hdev->ssp_debug_mode = 0; 301 302 hci_bdaddr_list_clear(&hdev->le_accept_list); 303 hci_bdaddr_list_clear(&hdev->le_resolv_list); 304 305 return rp->status; 306 } 307 308 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data, 309 struct sk_buff *skb) 310 { 311 struct hci_rp_read_stored_link_key *rp = data; 312 struct hci_cp_read_stored_link_key *sent; 313 314 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 315 316 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY); 317 if (!sent) 318 return rp->status; 319 320 if (!rp->status && sent->read_all == 0x01) { 321 hdev->stored_max_keys = le16_to_cpu(rp->max_keys); 322 hdev->stored_num_keys = le16_to_cpu(rp->num_keys); 323 } 324 325 return rp->status; 326 } 327 328 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data, 329 struct sk_buff *skb) 330 { 331 struct hci_rp_delete_stored_link_key *rp = data; 332 u16 num_keys; 333 334 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 335 336 if (rp->status) 337 return rp->status; 338 339 num_keys = le16_to_cpu(rp->num_keys); 340 341 if (num_keys <= hdev->stored_num_keys) 342 hdev->stored_num_keys -= num_keys; 343 else 344 hdev->stored_num_keys = 0; 345 346 return rp->status; 347 } 348 349 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data, 350 struct sk_buff *skb) 351 { 352 struct hci_ev_status *rp = data; 353 void *sent; 354 355 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 356 357 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME); 358 if (!sent) 359 return rp->status; 360 361 hci_dev_lock(hdev); 362 363 if (hci_dev_test_flag(hdev, HCI_MGMT)) 364 mgmt_set_local_name_complete(hdev, sent, rp->status); 365 else if (!rp->status) 366 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); 367 368 hci_dev_unlock(hdev); 369 370 return rp->status; 371 } 372 373 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data, 374 struct sk_buff *skb) 375 { 376 struct hci_rp_read_local_name *rp = data; 377 378 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 379 380 if (rp->status) 381 return rp->status; 382 383 if (hci_dev_test_flag(hdev, HCI_SETUP) || 384 hci_dev_test_flag(hdev, HCI_CONFIG)) 385 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH); 386 387 return rp->status; 388 } 389 390 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data, 391 struct sk_buff *skb) 392 { 393 struct hci_ev_status *rp = data; 394 void *sent; 395 396 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 397 398 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE); 399 if (!sent) 400 return rp->status; 401 402 hci_dev_lock(hdev); 403 404 if (!rp->status) { 405 __u8 param = *((__u8 *) sent); 406 407 if (param == AUTH_ENABLED) 408 set_bit(HCI_AUTH, &hdev->flags); 409 else 410 clear_bit(HCI_AUTH, &hdev->flags); 411 } 412 413 if (hci_dev_test_flag(hdev, HCI_MGMT)) 414 mgmt_auth_enable_complete(hdev, rp->status); 415 416 hci_dev_unlock(hdev); 417 418 return rp->status; 419 } 420 421 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data, 422 struct sk_buff *skb) 423 { 424 struct hci_ev_status *rp = data; 425 __u8 param; 426 void *sent; 427 428 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 429 430 if (rp->status) 431 return rp->status; 432 433 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE); 434 if (!sent) 435 return rp->status; 436 437 param = *((__u8 *) sent); 438 439 if (param) 440 set_bit(HCI_ENCRYPT, &hdev->flags); 441 else 442 clear_bit(HCI_ENCRYPT, &hdev->flags); 443 444 return rp->status; 445 } 446 447 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data, 448 struct sk_buff *skb) 449 { 450 struct hci_ev_status *rp = data; 451 __u8 param; 452 void *sent; 453 454 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 455 456 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE); 457 if (!sent) 458 return rp->status; 459 460 param = *((__u8 *) sent); 461 462 hci_dev_lock(hdev); 463 464 if (rp->status) { 465 hdev->discov_timeout = 0; 466 goto done; 467 } 468 469 if (param & SCAN_INQUIRY) 470 set_bit(HCI_ISCAN, &hdev->flags); 471 else 472 clear_bit(HCI_ISCAN, &hdev->flags); 473 474 if (param & SCAN_PAGE) 475 set_bit(HCI_PSCAN, &hdev->flags); 476 else 477 clear_bit(HCI_PSCAN, &hdev->flags); 478 479 done: 480 hci_dev_unlock(hdev); 481 482 return rp->status; 483 } 484 485 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data, 486 struct sk_buff *skb) 487 { 488 struct hci_ev_status *rp = data; 489 struct hci_cp_set_event_filter *cp; 490 void *sent; 491 492 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 493 494 if (rp->status) 495 return rp->status; 496 497 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT); 498 if (!sent) 499 return rp->status; 500 501 cp = (struct hci_cp_set_event_filter *)sent; 502 503 if (cp->flt_type == HCI_FLT_CLEAR_ALL) 504 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 505 else 506 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 507 508 return rp->status; 509 } 510 511 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data, 512 struct sk_buff *skb) 513 { 514 struct hci_rp_read_class_of_dev *rp = data; 515 516 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 517 518 if (rp->status) 519 return rp->status; 520 521 memcpy(hdev->dev_class, rp->dev_class, 3); 522 523 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2], 524 hdev->dev_class[1], hdev->dev_class[0]); 525 526 return rp->status; 527 } 528 529 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data, 530 struct sk_buff *skb) 531 { 532 struct hci_ev_status *rp = data; 533 void *sent; 534 535 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 536 537 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV); 538 if (!sent) 539 return rp->status; 540 541 hci_dev_lock(hdev); 542 543 if (!rp->status) 544 memcpy(hdev->dev_class, sent, 3); 545 546 if (hci_dev_test_flag(hdev, HCI_MGMT)) 547 mgmt_set_class_of_dev_complete(hdev, sent, rp->status); 548 549 hci_dev_unlock(hdev); 550 551 return rp->status; 552 } 553 554 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data, 555 struct sk_buff *skb) 556 { 557 struct hci_rp_read_voice_setting *rp = data; 558 __u16 setting; 559 560 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 561 562 if (rp->status) 563 return rp->status; 564 565 setting = __le16_to_cpu(rp->voice_setting); 566 567 if (hdev->voice_setting == setting) 568 return rp->status; 569 570 hdev->voice_setting = setting; 571 572 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 573 574 if (hdev->notify) 575 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 576 577 return rp->status; 578 } 579 580 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data, 581 struct sk_buff *skb) 582 { 583 struct hci_ev_status *rp = data; 584 __u16 setting; 585 void *sent; 586 587 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 588 589 if (rp->status) 590 return rp->status; 591 592 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING); 593 if (!sent) 594 return rp->status; 595 596 setting = get_unaligned_le16(sent); 597 598 if (hdev->voice_setting == setting) 599 return rp->status; 600 601 hdev->voice_setting = setting; 602 603 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 604 605 if (hdev->notify) 606 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 607 608 return rp->status; 609 } 610 611 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data, 612 struct sk_buff *skb) 613 { 614 struct hci_rp_read_num_supported_iac *rp = data; 615 616 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 617 618 if (rp->status) 619 return rp->status; 620 621 hdev->num_iac = rp->num_iac; 622 623 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac); 624 625 return rp->status; 626 } 627 628 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data, 629 struct sk_buff *skb) 630 { 631 struct hci_ev_status *rp = data; 632 struct hci_cp_write_ssp_mode *sent; 633 634 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 635 636 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE); 637 if (!sent) 638 return rp->status; 639 640 hci_dev_lock(hdev); 641 642 if (!rp->status) { 643 if (sent->mode) 644 hdev->features[1][0] |= LMP_HOST_SSP; 645 else 646 hdev->features[1][0] &= ~LMP_HOST_SSP; 647 } 648 649 if (!rp->status) { 650 if (sent->mode) 651 hci_dev_set_flag(hdev, HCI_SSP_ENABLED); 652 else 653 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); 654 } 655 656 hci_dev_unlock(hdev); 657 658 return rp->status; 659 } 660 661 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data, 662 struct sk_buff *skb) 663 { 664 struct hci_ev_status *rp = data; 665 struct hci_cp_write_sc_support *sent; 666 667 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 668 669 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT); 670 if (!sent) 671 return rp->status; 672 673 hci_dev_lock(hdev); 674 675 if (!rp->status) { 676 if (sent->support) 677 hdev->features[1][0] |= LMP_HOST_SC; 678 else 679 hdev->features[1][0] &= ~LMP_HOST_SC; 680 } 681 682 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) { 683 if (sent->support) 684 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 685 else 686 hci_dev_clear_flag(hdev, HCI_SC_ENABLED); 687 } 688 689 hci_dev_unlock(hdev); 690 691 return rp->status; 692 } 693 694 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data, 695 struct sk_buff *skb) 696 { 697 struct hci_rp_read_local_version *rp = data; 698 699 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 700 701 if (rp->status) 702 return rp->status; 703 704 if (hci_dev_test_flag(hdev, HCI_SETUP) || 705 hci_dev_test_flag(hdev, HCI_CONFIG)) { 706 hdev->hci_ver = rp->hci_ver; 707 hdev->hci_rev = __le16_to_cpu(rp->hci_rev); 708 hdev->lmp_ver = rp->lmp_ver; 709 hdev->manufacturer = __le16_to_cpu(rp->manufacturer); 710 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver); 711 } 712 713 return rp->status; 714 } 715 716 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data, 717 struct sk_buff *skb) 718 { 719 struct hci_rp_read_enc_key_size *rp = data; 720 struct hci_conn *conn; 721 u16 handle; 722 u8 status = rp->status; 723 724 bt_dev_dbg(hdev, "status 0x%2.2x", status); 725 726 handle = le16_to_cpu(rp->handle); 727 728 hci_dev_lock(hdev); 729 730 conn = hci_conn_hash_lookup_handle(hdev, handle); 731 if (!conn) { 732 status = 0xFF; 733 goto done; 734 } 735 736 /* While unexpected, the read_enc_key_size command may fail. The most 737 * secure approach is to then assume the key size is 0 to force a 738 * disconnection. 739 */ 740 if (status) { 741 bt_dev_err(hdev, "failed to read key size for handle %u", 742 handle); 743 conn->enc_key_size = 0; 744 } else { 745 conn->enc_key_size = rp->key_size; 746 status = 0; 747 } 748 749 hci_encrypt_cfm(conn, 0); 750 751 done: 752 hci_dev_unlock(hdev); 753 754 return status; 755 } 756 757 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data, 758 struct sk_buff *skb) 759 { 760 struct hci_rp_read_local_commands *rp = data; 761 762 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 763 764 if (rp->status) 765 return rp->status; 766 767 if (hci_dev_test_flag(hdev, HCI_SETUP) || 768 hci_dev_test_flag(hdev, HCI_CONFIG)) 769 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); 770 771 return rp->status; 772 } 773 774 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data, 775 struct sk_buff *skb) 776 { 777 struct hci_rp_read_auth_payload_to *rp = data; 778 struct hci_conn *conn; 779 780 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 781 782 if (rp->status) 783 return rp->status; 784 785 hci_dev_lock(hdev); 786 787 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 788 if (conn) 789 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); 790 791 hci_dev_unlock(hdev); 792 793 return rp->status; 794 } 795 796 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data, 797 struct sk_buff *skb) 798 { 799 struct hci_rp_write_auth_payload_to *rp = data; 800 struct hci_conn *conn; 801 void *sent; 802 803 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 804 805 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); 806 if (!sent) 807 return rp->status; 808 809 hci_dev_lock(hdev); 810 811 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 812 if (!conn) { 813 rp->status = 0xff; 814 goto unlock; 815 } 816 817 if (!rp->status) 818 conn->auth_payload_timeout = get_unaligned_le16(sent + 2); 819 820 hci_encrypt_cfm(conn, 0); 821 822 unlock: 823 hci_dev_unlock(hdev); 824 825 return rp->status; 826 } 827 828 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data, 829 struct sk_buff *skb) 830 { 831 struct hci_rp_read_local_features *rp = data; 832 833 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 834 835 if (rp->status) 836 return rp->status; 837 838 memcpy(hdev->features, rp->features, 8); 839 840 /* Adjust default settings according to features 841 * supported by device. */ 842 843 if (hdev->features[0][0] & LMP_3SLOT) 844 hdev->pkt_type |= (HCI_DM3 | HCI_DH3); 845 846 if (hdev->features[0][0] & LMP_5SLOT) 847 hdev->pkt_type |= (HCI_DM5 | HCI_DH5); 848 849 if (hdev->features[0][1] & LMP_HV2) { 850 hdev->pkt_type |= (HCI_HV2); 851 hdev->esco_type |= (ESCO_HV2); 852 } 853 854 if (hdev->features[0][1] & LMP_HV3) { 855 hdev->pkt_type |= (HCI_HV3); 856 hdev->esco_type |= (ESCO_HV3); 857 } 858 859 if (lmp_esco_capable(hdev)) 860 hdev->esco_type |= (ESCO_EV3); 861 862 if (hdev->features[0][4] & LMP_EV4) 863 hdev->esco_type |= (ESCO_EV4); 864 865 if (hdev->features[0][4] & LMP_EV5) 866 hdev->esco_type |= (ESCO_EV5); 867 868 if (hdev->features[0][5] & LMP_EDR_ESCO_2M) 869 hdev->esco_type |= (ESCO_2EV3); 870 871 if (hdev->features[0][5] & LMP_EDR_ESCO_3M) 872 hdev->esco_type |= (ESCO_3EV3); 873 874 if (hdev->features[0][5] & LMP_EDR_3S_ESCO) 875 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); 876 877 return rp->status; 878 } 879 880 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data, 881 struct sk_buff *skb) 882 { 883 struct hci_rp_read_local_ext_features *rp = data; 884 885 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 886 887 if (rp->status) 888 return rp->status; 889 890 if (hdev->max_page < rp->max_page) { 891 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, 892 &hdev->quirks)) 893 bt_dev_warn(hdev, "broken local ext features page 2"); 894 else 895 hdev->max_page = rp->max_page; 896 } 897 898 if (rp->page < HCI_MAX_PAGES) 899 memcpy(hdev->features[rp->page], rp->features, 8); 900 901 return rp->status; 902 } 903 904 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data, 905 struct sk_buff *skb) 906 { 907 struct hci_rp_read_flow_control_mode *rp = data; 908 909 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 910 911 if (rp->status) 912 return rp->status; 913 914 hdev->flow_ctl_mode = rp->mode; 915 916 return rp->status; 917 } 918 919 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, 920 struct sk_buff *skb) 921 { 922 struct hci_rp_read_buffer_size *rp = data; 923 924 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 925 926 if (rp->status) 927 return rp->status; 928 929 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); 930 hdev->sco_mtu = rp->sco_mtu; 931 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); 932 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); 933 934 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { 935 hdev->sco_mtu = 64; 936 hdev->sco_pkts = 8; 937 } 938 939 hdev->acl_cnt = hdev->acl_pkts; 940 hdev->sco_cnt = hdev->sco_pkts; 941 942 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, 943 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); 944 945 return rp->status; 946 } 947 948 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data, 949 struct sk_buff *skb) 950 { 951 struct hci_rp_read_bd_addr *rp = data; 952 953 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 954 955 if (rp->status) 956 return rp->status; 957 958 if (test_bit(HCI_INIT, &hdev->flags)) 959 bacpy(&hdev->bdaddr, &rp->bdaddr); 960 961 if (hci_dev_test_flag(hdev, HCI_SETUP)) 962 bacpy(&hdev->setup_addr, &rp->bdaddr); 963 964 return rp->status; 965 } 966 967 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data, 968 struct sk_buff *skb) 969 { 970 struct hci_rp_read_local_pairing_opts *rp = data; 971 972 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 973 974 if (rp->status) 975 return rp->status; 976 977 if (hci_dev_test_flag(hdev, HCI_SETUP) || 978 hci_dev_test_flag(hdev, HCI_CONFIG)) { 979 hdev->pairing_opts = rp->pairing_opts; 980 hdev->max_enc_key_size = rp->max_key_size; 981 } 982 983 return rp->status; 984 } 985 986 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data, 987 struct sk_buff *skb) 988 { 989 struct hci_rp_read_page_scan_activity *rp = data; 990 991 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 992 993 if (rp->status) 994 return rp->status; 995 996 if (test_bit(HCI_INIT, &hdev->flags)) { 997 hdev->page_scan_interval = __le16_to_cpu(rp->interval); 998 hdev->page_scan_window = __le16_to_cpu(rp->window); 999 } 1000 1001 return rp->status; 1002 } 1003 1004 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data, 1005 struct sk_buff *skb) 1006 { 1007 struct hci_ev_status *rp = data; 1008 struct hci_cp_write_page_scan_activity *sent; 1009 1010 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1011 1012 if (rp->status) 1013 return rp->status; 1014 1015 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); 1016 if (!sent) 1017 return rp->status; 1018 1019 hdev->page_scan_interval = __le16_to_cpu(sent->interval); 1020 hdev->page_scan_window = __le16_to_cpu(sent->window); 1021 1022 return rp->status; 1023 } 1024 1025 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data, 1026 struct sk_buff *skb) 1027 { 1028 struct hci_rp_read_page_scan_type *rp = data; 1029 1030 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1031 1032 if (rp->status) 1033 return rp->status; 1034 1035 if (test_bit(HCI_INIT, &hdev->flags)) 1036 hdev->page_scan_type = rp->type; 1037 1038 return rp->status; 1039 } 1040 1041 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data, 1042 struct sk_buff *skb) 1043 { 1044 struct hci_ev_status *rp = data; 1045 u8 *type; 1046 1047 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1048 1049 if (rp->status) 1050 return rp->status; 1051 1052 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); 1053 if (type) 1054 hdev->page_scan_type = *type; 1055 1056 return rp->status; 1057 } 1058 1059 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data, 1060 struct sk_buff *skb) 1061 { 1062 struct hci_rp_read_data_block_size *rp = data; 1063 1064 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1065 1066 if (rp->status) 1067 return rp->status; 1068 1069 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len); 1070 hdev->block_len = __le16_to_cpu(rp->block_len); 1071 hdev->num_blocks = __le16_to_cpu(rp->num_blocks); 1072 1073 hdev->block_cnt = hdev->num_blocks; 1074 1075 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu, 1076 hdev->block_cnt, hdev->block_len); 1077 1078 return rp->status; 1079 } 1080 1081 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, 1082 struct sk_buff *skb) 1083 { 1084 struct hci_rp_read_clock *rp = data; 1085 struct hci_cp_read_clock *cp; 1086 struct hci_conn *conn; 1087 1088 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1089 1090 if (rp->status) 1091 return rp->status; 1092 1093 hci_dev_lock(hdev); 1094 1095 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 1096 if (!cp) 1097 goto unlock; 1098 1099 if (cp->which == 0x00) { 1100 hdev->clock = le32_to_cpu(rp->clock); 1101 goto unlock; 1102 } 1103 1104 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1105 if (conn) { 1106 conn->clock = le32_to_cpu(rp->clock); 1107 conn->clock_accuracy = le16_to_cpu(rp->accuracy); 1108 } 1109 1110 unlock: 1111 hci_dev_unlock(hdev); 1112 return rp->status; 1113 } 1114 1115 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data, 1116 struct sk_buff *skb) 1117 { 1118 struct hci_rp_read_local_amp_info *rp = data; 1119 1120 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1121 1122 if (rp->status) 1123 return rp->status; 1124 1125 hdev->amp_status = rp->amp_status; 1126 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw); 1127 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw); 1128 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency); 1129 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu); 1130 hdev->amp_type = rp->amp_type; 1131 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap); 1132 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size); 1133 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to); 1134 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to); 1135 1136 return rp->status; 1137 } 1138 1139 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, 1140 struct sk_buff *skb) 1141 { 1142 struct hci_rp_read_inq_rsp_tx_power *rp = data; 1143 1144 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1145 1146 if (rp->status) 1147 return rp->status; 1148 1149 hdev->inq_tx_power = rp->tx_power; 1150 1151 return rp->status; 1152 } 1153 1154 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, 1155 struct sk_buff *skb) 1156 { 1157 struct hci_rp_read_def_err_data_reporting *rp = data; 1158 1159 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1160 1161 if (rp->status) 1162 return rp->status; 1163 1164 hdev->err_data_reporting = rp->err_data_reporting; 1165 1166 return rp->status; 1167 } 1168 1169 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, 1170 struct sk_buff *skb) 1171 { 1172 struct hci_ev_status *rp = data; 1173 struct hci_cp_write_def_err_data_reporting *cp; 1174 1175 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1176 1177 if (rp->status) 1178 return rp->status; 1179 1180 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); 1181 if (!cp) 1182 return rp->status; 1183 1184 hdev->err_data_reporting = cp->err_data_reporting; 1185 1186 return rp->status; 1187 } 1188 1189 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, 1190 struct sk_buff *skb) 1191 { 1192 struct hci_rp_pin_code_reply *rp = data; 1193 struct hci_cp_pin_code_reply *cp; 1194 struct hci_conn *conn; 1195 1196 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1197 1198 hci_dev_lock(hdev); 1199 1200 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1201 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); 1202 1203 if (rp->status) 1204 goto unlock; 1205 1206 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); 1207 if (!cp) 1208 goto unlock; 1209 1210 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 1211 if (conn) 1212 conn->pin_length = cp->pin_len; 1213 1214 unlock: 1215 hci_dev_unlock(hdev); 1216 return rp->status; 1217 } 1218 1219 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, 1220 struct sk_buff *skb) 1221 { 1222 struct hci_rp_pin_code_neg_reply *rp = data; 1223 1224 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1225 1226 hci_dev_lock(hdev); 1227 1228 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1229 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, 1230 rp->status); 1231 1232 hci_dev_unlock(hdev); 1233 1234 return rp->status; 1235 } 1236 1237 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, 1238 struct sk_buff *skb) 1239 { 1240 struct hci_rp_le_read_buffer_size *rp = data; 1241 1242 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1243 1244 if (rp->status) 1245 return rp->status; 1246 1247 hdev->le_mtu = __le16_to_cpu(rp->le_mtu); 1248 hdev->le_pkts = rp->le_max_pkt; 1249 1250 hdev->le_cnt = hdev->le_pkts; 1251 1252 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); 1253 1254 return rp->status; 1255 } 1256 1257 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, 1258 struct sk_buff *skb) 1259 { 1260 struct hci_rp_le_read_local_features *rp = data; 1261 1262 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1263 1264 if (rp->status) 1265 return rp->status; 1266 1267 memcpy(hdev->le_features, rp->features, 8); 1268 1269 return rp->status; 1270 } 1271 1272 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, 1273 struct sk_buff *skb) 1274 { 1275 struct hci_rp_le_read_adv_tx_power *rp = data; 1276 1277 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1278 1279 if (rp->status) 1280 return rp->status; 1281 1282 hdev->adv_tx_power = rp->tx_power; 1283 1284 return rp->status; 1285 } 1286 1287 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, 1288 struct sk_buff *skb) 1289 { 1290 struct hci_rp_user_confirm_reply *rp = data; 1291 1292 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1293 1294 hci_dev_lock(hdev); 1295 1296 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1297 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, 1298 rp->status); 1299 1300 hci_dev_unlock(hdev); 1301 1302 return rp->status; 1303 } 1304 1305 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, 1306 struct sk_buff *skb) 1307 { 1308 struct hci_rp_user_confirm_reply *rp = data; 1309 1310 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1311 1312 hci_dev_lock(hdev); 1313 1314 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1315 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, 1316 ACL_LINK, 0, rp->status); 1317 1318 hci_dev_unlock(hdev); 1319 1320 return rp->status; 1321 } 1322 1323 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, 1324 struct sk_buff *skb) 1325 { 1326 struct hci_rp_user_confirm_reply *rp = data; 1327 1328 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1329 1330 hci_dev_lock(hdev); 1331 1332 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1333 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 1334 0, rp->status); 1335 1336 hci_dev_unlock(hdev); 1337 1338 return rp->status; 1339 } 1340 1341 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, 1342 struct sk_buff *skb) 1343 { 1344 struct hci_rp_user_confirm_reply *rp = data; 1345 1346 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1347 1348 hci_dev_lock(hdev); 1349 1350 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1351 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, 1352 ACL_LINK, 0, rp->status); 1353 1354 hci_dev_unlock(hdev); 1355 1356 return rp->status; 1357 } 1358 1359 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, 1360 struct sk_buff *skb) 1361 { 1362 struct hci_rp_read_local_oob_data *rp = data; 1363 1364 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1365 1366 return rp->status; 1367 } 1368 1369 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, 1370 struct sk_buff *skb) 1371 { 1372 struct hci_rp_read_local_oob_ext_data *rp = data; 1373 1374 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1375 1376 return rp->status; 1377 } 1378 1379 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, 1380 struct sk_buff *skb) 1381 { 1382 struct hci_ev_status *rp = data; 1383 bdaddr_t *sent; 1384 1385 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1386 1387 if (rp->status) 1388 return rp->status; 1389 1390 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); 1391 if (!sent) 1392 return rp->status; 1393 1394 hci_dev_lock(hdev); 1395 1396 bacpy(&hdev->random_addr, sent); 1397 1398 if (!bacmp(&hdev->rpa, sent)) { 1399 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 1400 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, 1401 secs_to_jiffies(hdev->rpa_timeout)); 1402 } 1403 1404 hci_dev_unlock(hdev); 1405 1406 return rp->status; 1407 } 1408 1409 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, 1410 struct sk_buff *skb) 1411 { 1412 struct hci_ev_status *rp = data; 1413 struct hci_cp_le_set_default_phy *cp; 1414 1415 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1416 1417 if (rp->status) 1418 return rp->status; 1419 1420 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); 1421 if (!cp) 1422 return rp->status; 1423 1424 hci_dev_lock(hdev); 1425 1426 hdev->le_tx_def_phys = cp->tx_phys; 1427 hdev->le_rx_def_phys = cp->rx_phys; 1428 1429 hci_dev_unlock(hdev); 1430 1431 return rp->status; 1432 } 1433 1434 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, 1435 struct sk_buff *skb) 1436 { 1437 struct hci_ev_status *rp = data; 1438 struct hci_cp_le_set_adv_set_rand_addr *cp; 1439 struct adv_info *adv; 1440 1441 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1442 1443 if (rp->status) 1444 return rp->status; 1445 1446 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); 1447 /* Update only in case the adv instance since handle 0x00 shall be using 1448 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and 1449 * non-extended adverting. 1450 */ 1451 if (!cp || !cp->handle) 1452 return rp->status; 1453 1454 hci_dev_lock(hdev); 1455 1456 adv = hci_find_adv_instance(hdev, cp->handle); 1457 if (adv) { 1458 bacpy(&adv->random_addr, &cp->bdaddr); 1459 if (!bacmp(&hdev->rpa, &cp->bdaddr)) { 1460 adv->rpa_expired = false; 1461 queue_delayed_work(hdev->workqueue, 1462 &adv->rpa_expired_cb, 1463 secs_to_jiffies(hdev->rpa_timeout)); 1464 } 1465 } 1466 1467 hci_dev_unlock(hdev); 1468 1469 return rp->status; 1470 } 1471 1472 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, 1473 struct sk_buff *skb) 1474 { 1475 struct hci_ev_status *rp = data; 1476 u8 *instance; 1477 int err; 1478 1479 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1480 1481 if (rp->status) 1482 return rp->status; 1483 1484 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); 1485 if (!instance) 1486 return rp->status; 1487 1488 hci_dev_lock(hdev); 1489 1490 err = hci_remove_adv_instance(hdev, *instance); 1491 if (!err) 1492 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, 1493 *instance); 1494 1495 hci_dev_unlock(hdev); 1496 1497 return rp->status; 1498 } 1499 1500 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, 1501 struct sk_buff *skb) 1502 { 1503 struct hci_ev_status *rp = data; 1504 struct adv_info *adv, *n; 1505 int err; 1506 1507 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1508 1509 if (rp->status) 1510 return rp->status; 1511 1512 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) 1513 return rp->status; 1514 1515 hci_dev_lock(hdev); 1516 1517 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 1518 u8 instance = adv->instance; 1519 1520 err = hci_remove_adv_instance(hdev, instance); 1521 if (!err) 1522 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), 1523 hdev, instance); 1524 } 1525 1526 hci_dev_unlock(hdev); 1527 1528 return rp->status; 1529 } 1530 1531 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, 1532 struct sk_buff *skb) 1533 { 1534 struct hci_rp_le_read_transmit_power *rp = data; 1535 1536 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1537 1538 if (rp->status) 1539 return rp->status; 1540 1541 hdev->min_le_tx_power = rp->min_le_tx_power; 1542 hdev->max_le_tx_power = rp->max_le_tx_power; 1543 1544 return rp->status; 1545 } 1546 1547 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, 1548 struct sk_buff *skb) 1549 { 1550 struct hci_ev_status *rp = data; 1551 struct hci_cp_le_set_privacy_mode *cp; 1552 struct hci_conn_params *params; 1553 1554 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1555 1556 if (rp->status) 1557 return rp->status; 1558 1559 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); 1560 if (!cp) 1561 return rp->status; 1562 1563 hci_dev_lock(hdev); 1564 1565 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); 1566 if (params) 1567 params->privacy_mode = cp->mode; 1568 1569 hci_dev_unlock(hdev); 1570 1571 return rp->status; 1572 } 1573 1574 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, 1575 struct sk_buff *skb) 1576 { 1577 struct hci_ev_status *rp = data; 1578 __u8 *sent; 1579 1580 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1581 1582 if (rp->status) 1583 return rp->status; 1584 1585 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); 1586 if (!sent) 1587 return rp->status; 1588 1589 hci_dev_lock(hdev); 1590 1591 /* If we're doing connection initiation as peripheral. Set a 1592 * timeout in case something goes wrong. 1593 */ 1594 if (*sent) { 1595 struct hci_conn *conn; 1596 1597 hci_dev_set_flag(hdev, HCI_LE_ADV); 1598 1599 conn = hci_lookup_le_connect(hdev); 1600 if (conn) 1601 queue_delayed_work(hdev->workqueue, 1602 &conn->le_conn_timeout, 1603 conn->conn_timeout); 1604 } else { 1605 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1606 } 1607 1608 hci_dev_unlock(hdev); 1609 1610 return rp->status; 1611 } 1612 1613 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, 1614 struct sk_buff *skb) 1615 { 1616 struct hci_cp_le_set_ext_adv_enable *cp; 1617 struct hci_cp_ext_adv_set *set; 1618 struct adv_info *adv = NULL, *n; 1619 struct hci_ev_status *rp = data; 1620 1621 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1622 1623 if (rp->status) 1624 return rp->status; 1625 1626 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); 1627 if (!cp) 1628 return rp->status; 1629 1630 set = (void *)cp->data; 1631 1632 hci_dev_lock(hdev); 1633 1634 if (cp->num_of_sets) 1635 adv = hci_find_adv_instance(hdev, set->handle); 1636 1637 if (cp->enable) { 1638 struct hci_conn *conn; 1639 1640 hci_dev_set_flag(hdev, HCI_LE_ADV); 1641 1642 if (adv) 1643 adv->enabled = true; 1644 1645 conn = hci_lookup_le_connect(hdev); 1646 if (conn) 1647 queue_delayed_work(hdev->workqueue, 1648 &conn->le_conn_timeout, 1649 conn->conn_timeout); 1650 } else { 1651 if (cp->num_of_sets) { 1652 if (adv) 1653 adv->enabled = false; 1654 1655 /* If just one instance was disabled check if there are 1656 * any other instance enabled before clearing HCI_LE_ADV 1657 */ 1658 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1659 list) { 1660 if (adv->enabled) 1661 goto unlock; 1662 } 1663 } else { 1664 /* All instances shall be considered disabled */ 1665 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1666 list) 1667 adv->enabled = false; 1668 } 1669 1670 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1671 } 1672 1673 unlock: 1674 hci_dev_unlock(hdev); 1675 return rp->status; 1676 } 1677 1678 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, 1679 struct sk_buff *skb) 1680 { 1681 struct hci_cp_le_set_scan_param *cp; 1682 struct hci_ev_status *rp = data; 1683 1684 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1685 1686 if (rp->status) 1687 return rp->status; 1688 1689 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); 1690 if (!cp) 1691 return rp->status; 1692 1693 hci_dev_lock(hdev); 1694 1695 hdev->le_scan_type = cp->type; 1696 1697 hci_dev_unlock(hdev); 1698 1699 return rp->status; 1700 } 1701 1702 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, 1703 struct sk_buff *skb) 1704 { 1705 struct hci_cp_le_set_ext_scan_params *cp; 1706 struct hci_ev_status *rp = data; 1707 struct hci_cp_le_scan_phy_params *phy_param; 1708 1709 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1710 1711 if (rp->status) 1712 return rp->status; 1713 1714 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); 1715 if (!cp) 1716 return rp->status; 1717 1718 phy_param = (void *)cp->data; 1719 1720 hci_dev_lock(hdev); 1721 1722 hdev->le_scan_type = phy_param->type; 1723 1724 hci_dev_unlock(hdev); 1725 1726 return rp->status; 1727 } 1728 1729 static bool has_pending_adv_report(struct hci_dev *hdev) 1730 { 1731 struct discovery_state *d = &hdev->discovery; 1732 1733 return bacmp(&d->last_adv_addr, BDADDR_ANY); 1734 } 1735 1736 static void clear_pending_adv_report(struct hci_dev *hdev) 1737 { 1738 struct discovery_state *d = &hdev->discovery; 1739 1740 bacpy(&d->last_adv_addr, BDADDR_ANY); 1741 d->last_adv_data_len = 0; 1742 } 1743 1744 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, 1745 u8 bdaddr_type, s8 rssi, u32 flags, 1746 u8 *data, u8 len) 1747 { 1748 struct discovery_state *d = &hdev->discovery; 1749 1750 if (len > HCI_MAX_AD_LENGTH) 1751 return; 1752 1753 bacpy(&d->last_adv_addr, bdaddr); 1754 d->last_adv_addr_type = bdaddr_type; 1755 d->last_adv_rssi = rssi; 1756 d->last_adv_flags = flags; 1757 memcpy(d->last_adv_data, data, len); 1758 d->last_adv_data_len = len; 1759 } 1760 1761 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) 1762 { 1763 hci_dev_lock(hdev); 1764 1765 switch (enable) { 1766 case LE_SCAN_ENABLE: 1767 hci_dev_set_flag(hdev, HCI_LE_SCAN); 1768 if (hdev->le_scan_type == LE_SCAN_ACTIVE) 1769 clear_pending_adv_report(hdev); 1770 if (hci_dev_test_flag(hdev, HCI_MESH)) 1771 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 1772 break; 1773 1774 case LE_SCAN_DISABLE: 1775 /* We do this here instead of when setting DISCOVERY_STOPPED 1776 * since the latter would potentially require waiting for 1777 * inquiry to stop too. 1778 */ 1779 if (has_pending_adv_report(hdev)) { 1780 struct discovery_state *d = &hdev->discovery; 1781 1782 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 1783 d->last_adv_addr_type, NULL, 1784 d->last_adv_rssi, d->last_adv_flags, 1785 d->last_adv_data, 1786 d->last_adv_data_len, NULL, 0, 0); 1787 } 1788 1789 /* Cancel this timer so that we don't try to disable scanning 1790 * when it's already disabled. 1791 */ 1792 cancel_delayed_work(&hdev->le_scan_disable); 1793 1794 hci_dev_clear_flag(hdev, HCI_LE_SCAN); 1795 1796 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we 1797 * interrupted scanning due to a connect request. Mark 1798 * therefore discovery as stopped. 1799 */ 1800 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) 1801 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 1802 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && 1803 hdev->discovery.state == DISCOVERY_FINDING) 1804 queue_work(hdev->workqueue, &hdev->reenable_adv_work); 1805 1806 break; 1807 1808 default: 1809 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", 1810 enable); 1811 break; 1812 } 1813 1814 hci_dev_unlock(hdev); 1815 } 1816 1817 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, 1818 struct sk_buff *skb) 1819 { 1820 struct hci_cp_le_set_scan_enable *cp; 1821 struct hci_ev_status *rp = data; 1822 1823 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1824 1825 if (rp->status) 1826 return rp->status; 1827 1828 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); 1829 if (!cp) 1830 return rp->status; 1831 1832 le_set_scan_enable_complete(hdev, cp->enable); 1833 1834 return rp->status; 1835 } 1836 1837 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, 1838 struct sk_buff *skb) 1839 { 1840 struct hci_cp_le_set_ext_scan_enable *cp; 1841 struct hci_ev_status *rp = data; 1842 1843 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1844 1845 if (rp->status) 1846 return rp->status; 1847 1848 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); 1849 if (!cp) 1850 return rp->status; 1851 1852 le_set_scan_enable_complete(hdev, cp->enable); 1853 1854 return rp->status; 1855 } 1856 1857 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, 1858 struct sk_buff *skb) 1859 { 1860 struct hci_rp_le_read_num_supported_adv_sets *rp = data; 1861 1862 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, 1863 rp->num_of_sets); 1864 1865 if (rp->status) 1866 return rp->status; 1867 1868 hdev->le_num_of_adv_sets = rp->num_of_sets; 1869 1870 return rp->status; 1871 } 1872 1873 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, 1874 struct sk_buff *skb) 1875 { 1876 struct hci_rp_le_read_accept_list_size *rp = data; 1877 1878 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 1879 1880 if (rp->status) 1881 return rp->status; 1882 1883 hdev->le_accept_list_size = rp->size; 1884 1885 return rp->status; 1886 } 1887 1888 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, 1889 struct sk_buff *skb) 1890 { 1891 struct hci_ev_status *rp = data; 1892 1893 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1894 1895 if (rp->status) 1896 return rp->status; 1897 1898 hci_dev_lock(hdev); 1899 hci_bdaddr_list_clear(&hdev->le_accept_list); 1900 hci_dev_unlock(hdev); 1901 1902 return rp->status; 1903 } 1904 1905 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, 1906 struct sk_buff *skb) 1907 { 1908 struct hci_cp_le_add_to_accept_list *sent; 1909 struct hci_ev_status *rp = data; 1910 1911 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1912 1913 if (rp->status) 1914 return rp->status; 1915 1916 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); 1917 if (!sent) 1918 return rp->status; 1919 1920 hci_dev_lock(hdev); 1921 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, 1922 sent->bdaddr_type); 1923 hci_dev_unlock(hdev); 1924 1925 return rp->status; 1926 } 1927 1928 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, 1929 struct sk_buff *skb) 1930 { 1931 struct hci_cp_le_del_from_accept_list *sent; 1932 struct hci_ev_status *rp = data; 1933 1934 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1935 1936 if (rp->status) 1937 return rp->status; 1938 1939 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); 1940 if (!sent) 1941 return rp->status; 1942 1943 hci_dev_lock(hdev); 1944 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, 1945 sent->bdaddr_type); 1946 hci_dev_unlock(hdev); 1947 1948 return rp->status; 1949 } 1950 1951 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, 1952 struct sk_buff *skb) 1953 { 1954 struct hci_rp_le_read_supported_states *rp = data; 1955 1956 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1957 1958 if (rp->status) 1959 return rp->status; 1960 1961 memcpy(hdev->le_states, rp->le_states, 8); 1962 1963 return rp->status; 1964 } 1965 1966 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, 1967 struct sk_buff *skb) 1968 { 1969 struct hci_rp_le_read_def_data_len *rp = data; 1970 1971 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1972 1973 if (rp->status) 1974 return rp->status; 1975 1976 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); 1977 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); 1978 1979 return rp->status; 1980 } 1981 1982 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, 1983 struct sk_buff *skb) 1984 { 1985 struct hci_cp_le_write_def_data_len *sent; 1986 struct hci_ev_status *rp = data; 1987 1988 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1989 1990 if (rp->status) 1991 return rp->status; 1992 1993 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); 1994 if (!sent) 1995 return rp->status; 1996 1997 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); 1998 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); 1999 2000 return rp->status; 2001 } 2002 2003 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, 2004 struct sk_buff *skb) 2005 { 2006 struct hci_cp_le_add_to_resolv_list *sent; 2007 struct hci_ev_status *rp = data; 2008 2009 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2010 2011 if (rp->status) 2012 return rp->status; 2013 2014 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); 2015 if (!sent) 2016 return rp->status; 2017 2018 hci_dev_lock(hdev); 2019 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2020 sent->bdaddr_type, sent->peer_irk, 2021 sent->local_irk); 2022 hci_dev_unlock(hdev); 2023 2024 return rp->status; 2025 } 2026 2027 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, 2028 struct sk_buff *skb) 2029 { 2030 struct hci_cp_le_del_from_resolv_list *sent; 2031 struct hci_ev_status *rp = data; 2032 2033 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2034 2035 if (rp->status) 2036 return rp->status; 2037 2038 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); 2039 if (!sent) 2040 return rp->status; 2041 2042 hci_dev_lock(hdev); 2043 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2044 sent->bdaddr_type); 2045 hci_dev_unlock(hdev); 2046 2047 return rp->status; 2048 } 2049 2050 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, 2051 struct sk_buff *skb) 2052 { 2053 struct hci_ev_status *rp = data; 2054 2055 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2056 2057 if (rp->status) 2058 return rp->status; 2059 2060 hci_dev_lock(hdev); 2061 hci_bdaddr_list_clear(&hdev->le_resolv_list); 2062 hci_dev_unlock(hdev); 2063 2064 return rp->status; 2065 } 2066 2067 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, 2068 struct sk_buff *skb) 2069 { 2070 struct hci_rp_le_read_resolv_list_size *rp = data; 2071 2072 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 2073 2074 if (rp->status) 2075 return rp->status; 2076 2077 hdev->le_resolv_list_size = rp->size; 2078 2079 return rp->status; 2080 } 2081 2082 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, 2083 struct sk_buff *skb) 2084 { 2085 struct hci_ev_status *rp = data; 2086 __u8 *sent; 2087 2088 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2089 2090 if (rp->status) 2091 return rp->status; 2092 2093 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); 2094 if (!sent) 2095 return rp->status; 2096 2097 hci_dev_lock(hdev); 2098 2099 if (*sent) 2100 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); 2101 else 2102 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); 2103 2104 hci_dev_unlock(hdev); 2105 2106 return rp->status; 2107 } 2108 2109 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, 2110 struct sk_buff *skb) 2111 { 2112 struct hci_rp_le_read_max_data_len *rp = data; 2113 2114 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2115 2116 if (rp->status) 2117 return rp->status; 2118 2119 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); 2120 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); 2121 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); 2122 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); 2123 2124 return rp->status; 2125 } 2126 2127 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, 2128 struct sk_buff *skb) 2129 { 2130 struct hci_cp_write_le_host_supported *sent; 2131 struct hci_ev_status *rp = data; 2132 2133 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2134 2135 if (rp->status) 2136 return rp->status; 2137 2138 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); 2139 if (!sent) 2140 return rp->status; 2141 2142 hci_dev_lock(hdev); 2143 2144 if (sent->le) { 2145 hdev->features[1][0] |= LMP_HOST_LE; 2146 hci_dev_set_flag(hdev, HCI_LE_ENABLED); 2147 } else { 2148 hdev->features[1][0] &= ~LMP_HOST_LE; 2149 hci_dev_clear_flag(hdev, HCI_LE_ENABLED); 2150 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 2151 } 2152 2153 if (sent->simul) 2154 hdev->features[1][0] |= LMP_HOST_LE_BREDR; 2155 else 2156 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; 2157 2158 hci_dev_unlock(hdev); 2159 2160 return rp->status; 2161 } 2162 2163 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, 2164 struct sk_buff *skb) 2165 { 2166 struct hci_cp_le_set_adv_param *cp; 2167 struct hci_ev_status *rp = data; 2168 2169 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2170 2171 if (rp->status) 2172 return rp->status; 2173 2174 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); 2175 if (!cp) 2176 return rp->status; 2177 2178 hci_dev_lock(hdev); 2179 hdev->adv_addr_type = cp->own_address_type; 2180 hci_dev_unlock(hdev); 2181 2182 return rp->status; 2183 } 2184 2185 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data, 2186 struct sk_buff *skb) 2187 { 2188 struct hci_rp_le_set_ext_adv_params *rp = data; 2189 struct hci_cp_le_set_ext_adv_params *cp; 2190 struct adv_info *adv_instance; 2191 2192 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2193 2194 if (rp->status) 2195 return rp->status; 2196 2197 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); 2198 if (!cp) 2199 return rp->status; 2200 2201 hci_dev_lock(hdev); 2202 hdev->adv_addr_type = cp->own_addr_type; 2203 if (!cp->handle) { 2204 /* Store in hdev for instance 0 */ 2205 hdev->adv_tx_power = rp->tx_power; 2206 } else { 2207 adv_instance = hci_find_adv_instance(hdev, cp->handle); 2208 if (adv_instance) 2209 adv_instance->tx_power = rp->tx_power; 2210 } 2211 /* Update adv data as tx power is known now */ 2212 hci_update_adv_data(hdev, cp->handle); 2213 2214 hci_dev_unlock(hdev); 2215 2216 return rp->status; 2217 } 2218 2219 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, 2220 struct sk_buff *skb) 2221 { 2222 struct hci_rp_read_rssi *rp = data; 2223 struct hci_conn *conn; 2224 2225 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2226 2227 if (rp->status) 2228 return rp->status; 2229 2230 hci_dev_lock(hdev); 2231 2232 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2233 if (conn) 2234 conn->rssi = rp->rssi; 2235 2236 hci_dev_unlock(hdev); 2237 2238 return rp->status; 2239 } 2240 2241 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, 2242 struct sk_buff *skb) 2243 { 2244 struct hci_cp_read_tx_power *sent; 2245 struct hci_rp_read_tx_power *rp = data; 2246 struct hci_conn *conn; 2247 2248 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2249 2250 if (rp->status) 2251 return rp->status; 2252 2253 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 2254 if (!sent) 2255 return rp->status; 2256 2257 hci_dev_lock(hdev); 2258 2259 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2260 if (!conn) 2261 goto unlock; 2262 2263 switch (sent->type) { 2264 case 0x00: 2265 conn->tx_power = rp->tx_power; 2266 break; 2267 case 0x01: 2268 conn->max_tx_power = rp->tx_power; 2269 break; 2270 } 2271 2272 unlock: 2273 hci_dev_unlock(hdev); 2274 return rp->status; 2275 } 2276 2277 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, 2278 struct sk_buff *skb) 2279 { 2280 struct hci_ev_status *rp = data; 2281 u8 *mode; 2282 2283 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2284 2285 if (rp->status) 2286 return rp->status; 2287 2288 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 2289 if (mode) 2290 hdev->ssp_debug_mode = *mode; 2291 2292 return rp->status; 2293 } 2294 2295 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 2296 { 2297 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2298 2299 if (status) { 2300 hci_conn_check_pending(hdev); 2301 return; 2302 } 2303 2304 set_bit(HCI_INQUIRY, &hdev->flags); 2305 } 2306 2307 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 2308 { 2309 struct hci_cp_create_conn *cp; 2310 struct hci_conn *conn; 2311 2312 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2313 2314 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 2315 if (!cp) 2316 return; 2317 2318 hci_dev_lock(hdev); 2319 2320 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2321 2322 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); 2323 2324 if (status) { 2325 if (conn && conn->state == BT_CONNECT) { 2326 if (status != 0x0c || conn->attempt > 2) { 2327 conn->state = BT_CLOSED; 2328 hci_connect_cfm(conn, status); 2329 hci_conn_del(conn); 2330 } else 2331 conn->state = BT_CONNECT2; 2332 } 2333 } else { 2334 if (!conn) { 2335 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr, 2336 HCI_ROLE_MASTER); 2337 if (!conn) 2338 bt_dev_err(hdev, "no memory for new connection"); 2339 } 2340 } 2341 2342 hci_dev_unlock(hdev); 2343 } 2344 2345 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 2346 { 2347 struct hci_cp_add_sco *cp; 2348 struct hci_conn *acl; 2349 struct hci_link *link; 2350 __u16 handle; 2351 2352 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2353 2354 if (!status) 2355 return; 2356 2357 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 2358 if (!cp) 2359 return; 2360 2361 handle = __le16_to_cpu(cp->handle); 2362 2363 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2364 2365 hci_dev_lock(hdev); 2366 2367 acl = hci_conn_hash_lookup_handle(hdev, handle); 2368 if (acl) { 2369 link = list_first_entry_or_null(&acl->link_list, 2370 struct hci_link, list); 2371 if (link && link->conn) { 2372 link->conn->state = BT_CLOSED; 2373 2374 hci_connect_cfm(link->conn, status); 2375 hci_conn_del(link->conn); 2376 } 2377 } 2378 2379 hci_dev_unlock(hdev); 2380 } 2381 2382 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 2383 { 2384 struct hci_cp_auth_requested *cp; 2385 struct hci_conn *conn; 2386 2387 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2388 2389 if (!status) 2390 return; 2391 2392 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 2393 if (!cp) 2394 return; 2395 2396 hci_dev_lock(hdev); 2397 2398 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2399 if (conn) { 2400 if (conn->state == BT_CONFIG) { 2401 hci_connect_cfm(conn, status); 2402 hci_conn_drop(conn); 2403 } 2404 } 2405 2406 hci_dev_unlock(hdev); 2407 } 2408 2409 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 2410 { 2411 struct hci_cp_set_conn_encrypt *cp; 2412 struct hci_conn *conn; 2413 2414 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2415 2416 if (!status) 2417 return; 2418 2419 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 2420 if (!cp) 2421 return; 2422 2423 hci_dev_lock(hdev); 2424 2425 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2426 if (conn) { 2427 if (conn->state == BT_CONFIG) { 2428 hci_connect_cfm(conn, status); 2429 hci_conn_drop(conn); 2430 } 2431 } 2432 2433 hci_dev_unlock(hdev); 2434 } 2435 2436 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 2437 struct hci_conn *conn) 2438 { 2439 if (conn->state != BT_CONFIG || !conn->out) 2440 return 0; 2441 2442 if (conn->pending_sec_level == BT_SECURITY_SDP) 2443 return 0; 2444 2445 /* Only request authentication for SSP connections or non-SSP 2446 * devices with sec_level MEDIUM or HIGH or if MITM protection 2447 * is requested. 2448 */ 2449 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 2450 conn->pending_sec_level != BT_SECURITY_FIPS && 2451 conn->pending_sec_level != BT_SECURITY_HIGH && 2452 conn->pending_sec_level != BT_SECURITY_MEDIUM) 2453 return 0; 2454 2455 return 1; 2456 } 2457 2458 static int hci_resolve_name(struct hci_dev *hdev, 2459 struct inquiry_entry *e) 2460 { 2461 struct hci_cp_remote_name_req cp; 2462 2463 memset(&cp, 0, sizeof(cp)); 2464 2465 bacpy(&cp.bdaddr, &e->data.bdaddr); 2466 cp.pscan_rep_mode = e->data.pscan_rep_mode; 2467 cp.pscan_mode = e->data.pscan_mode; 2468 cp.clock_offset = e->data.clock_offset; 2469 2470 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 2471 } 2472 2473 static bool hci_resolve_next_name(struct hci_dev *hdev) 2474 { 2475 struct discovery_state *discov = &hdev->discovery; 2476 struct inquiry_entry *e; 2477 2478 if (list_empty(&discov->resolve)) 2479 return false; 2480 2481 /* We should stop if we already spent too much time resolving names. */ 2482 if (time_after(jiffies, discov->name_resolve_timeout)) { 2483 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); 2484 return false; 2485 } 2486 2487 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2488 if (!e) 2489 return false; 2490 2491 if (hci_resolve_name(hdev, e) == 0) { 2492 e->name_state = NAME_PENDING; 2493 return true; 2494 } 2495 2496 return false; 2497 } 2498 2499 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2500 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2501 { 2502 struct discovery_state *discov = &hdev->discovery; 2503 struct inquiry_entry *e; 2504 2505 /* Update the mgmt connected state if necessary. Be careful with 2506 * conn objects that exist but are not (yet) connected however. 2507 * Only those in BT_CONFIG or BT_CONNECTED states can be 2508 * considered connected. 2509 */ 2510 if (conn && 2511 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) && 2512 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 2513 mgmt_device_connected(hdev, conn, name, name_len); 2514 2515 if (discov->state == DISCOVERY_STOPPED) 2516 return; 2517 2518 if (discov->state == DISCOVERY_STOPPING) 2519 goto discov_complete; 2520 2521 if (discov->state != DISCOVERY_RESOLVING) 2522 return; 2523 2524 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2525 /* If the device was not found in a list of found devices names of which 2526 * are pending. there is no need to continue resolving a next name as it 2527 * will be done upon receiving another Remote Name Request Complete 2528 * Event */ 2529 if (!e) 2530 return; 2531 2532 list_del(&e->list); 2533 2534 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; 2535 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, 2536 name, name_len); 2537 2538 if (hci_resolve_next_name(hdev)) 2539 return; 2540 2541 discov_complete: 2542 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2543 } 2544 2545 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2546 { 2547 struct hci_cp_remote_name_req *cp; 2548 struct hci_conn *conn; 2549 2550 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2551 2552 /* If successful wait for the name req complete event before 2553 * checking for the need to do authentication */ 2554 if (!status) 2555 return; 2556 2557 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2558 if (!cp) 2559 return; 2560 2561 hci_dev_lock(hdev); 2562 2563 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2564 2565 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2566 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2567 2568 if (!conn) 2569 goto unlock; 2570 2571 if (!hci_outgoing_auth_needed(hdev, conn)) 2572 goto unlock; 2573 2574 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2575 struct hci_cp_auth_requested auth_cp; 2576 2577 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2578 2579 auth_cp.handle = __cpu_to_le16(conn->handle); 2580 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2581 sizeof(auth_cp), &auth_cp); 2582 } 2583 2584 unlock: 2585 hci_dev_unlock(hdev); 2586 } 2587 2588 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2589 { 2590 struct hci_cp_read_remote_features *cp; 2591 struct hci_conn *conn; 2592 2593 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2594 2595 if (!status) 2596 return; 2597 2598 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2599 if (!cp) 2600 return; 2601 2602 hci_dev_lock(hdev); 2603 2604 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2605 if (conn) { 2606 if (conn->state == BT_CONFIG) { 2607 hci_connect_cfm(conn, status); 2608 hci_conn_drop(conn); 2609 } 2610 } 2611 2612 hci_dev_unlock(hdev); 2613 } 2614 2615 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2616 { 2617 struct hci_cp_read_remote_ext_features *cp; 2618 struct hci_conn *conn; 2619 2620 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2621 2622 if (!status) 2623 return; 2624 2625 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2626 if (!cp) 2627 return; 2628 2629 hci_dev_lock(hdev); 2630 2631 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2632 if (conn) { 2633 if (conn->state == BT_CONFIG) { 2634 hci_connect_cfm(conn, status); 2635 hci_conn_drop(conn); 2636 } 2637 } 2638 2639 hci_dev_unlock(hdev); 2640 } 2641 2642 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, 2643 __u8 status) 2644 { 2645 struct hci_conn *acl; 2646 struct hci_link *link; 2647 2648 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); 2649 2650 hci_dev_lock(hdev); 2651 2652 acl = hci_conn_hash_lookup_handle(hdev, handle); 2653 if (acl) { 2654 link = list_first_entry_or_null(&acl->link_list, 2655 struct hci_link, list); 2656 if (link && link->conn) { 2657 link->conn->state = BT_CLOSED; 2658 2659 hci_connect_cfm(link->conn, status); 2660 hci_conn_del(link->conn); 2661 } 2662 } 2663 2664 hci_dev_unlock(hdev); 2665 } 2666 2667 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2668 { 2669 struct hci_cp_setup_sync_conn *cp; 2670 2671 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2672 2673 if (!status) 2674 return; 2675 2676 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2677 if (!cp) 2678 return; 2679 2680 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2681 } 2682 2683 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2684 { 2685 struct hci_cp_enhanced_setup_sync_conn *cp; 2686 2687 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2688 2689 if (!status) 2690 return; 2691 2692 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); 2693 if (!cp) 2694 return; 2695 2696 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2697 } 2698 2699 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2700 { 2701 struct hci_cp_sniff_mode *cp; 2702 struct hci_conn *conn; 2703 2704 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2705 2706 if (!status) 2707 return; 2708 2709 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2710 if (!cp) 2711 return; 2712 2713 hci_dev_lock(hdev); 2714 2715 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2716 if (conn) { 2717 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2718 2719 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2720 hci_sco_setup(conn, status); 2721 } 2722 2723 hci_dev_unlock(hdev); 2724 } 2725 2726 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2727 { 2728 struct hci_cp_exit_sniff_mode *cp; 2729 struct hci_conn *conn; 2730 2731 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2732 2733 if (!status) 2734 return; 2735 2736 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2737 if (!cp) 2738 return; 2739 2740 hci_dev_lock(hdev); 2741 2742 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2743 if (conn) { 2744 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2745 2746 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2747 hci_sco_setup(conn, status); 2748 } 2749 2750 hci_dev_unlock(hdev); 2751 } 2752 2753 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2754 { 2755 struct hci_cp_disconnect *cp; 2756 struct hci_conn_params *params; 2757 struct hci_conn *conn; 2758 bool mgmt_conn; 2759 2760 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2761 2762 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended 2763 * otherwise cleanup the connection immediately. 2764 */ 2765 if (!status && !hdev->suspended) 2766 return; 2767 2768 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2769 if (!cp) 2770 return; 2771 2772 hci_dev_lock(hdev); 2773 2774 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2775 if (!conn) 2776 goto unlock; 2777 2778 if (status) { 2779 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2780 conn->dst_type, status); 2781 2782 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 2783 hdev->cur_adv_instance = conn->adv_instance; 2784 hci_enable_advertising(hdev); 2785 } 2786 2787 goto done; 2788 } 2789 2790 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2791 2792 if (conn->type == ACL_LINK) { 2793 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2794 hci_remove_link_key(hdev, &conn->dst); 2795 } 2796 2797 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2798 if (params) { 2799 switch (params->auto_connect) { 2800 case HCI_AUTO_CONN_LINK_LOSS: 2801 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2802 break; 2803 fallthrough; 2804 2805 case HCI_AUTO_CONN_DIRECT: 2806 case HCI_AUTO_CONN_ALWAYS: 2807 list_del_init(¶ms->action); 2808 list_add(¶ms->action, &hdev->pend_le_conns); 2809 break; 2810 2811 default: 2812 break; 2813 } 2814 } 2815 2816 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2817 cp->reason, mgmt_conn); 2818 2819 hci_disconn_cfm(conn, cp->reason); 2820 2821 done: 2822 /* If the disconnection failed for any reason, the upper layer 2823 * does not retry to disconnect in current implementation. 2824 * Hence, we need to do some basic cleanup here and re-enable 2825 * advertising if necessary. 2826 */ 2827 hci_conn_del(conn); 2828 unlock: 2829 hci_dev_unlock(hdev); 2830 } 2831 2832 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2833 { 2834 /* When using controller based address resolution, then the new 2835 * address types 0x02 and 0x03 are used. These types need to be 2836 * converted back into either public address or random address type 2837 */ 2838 switch (type) { 2839 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2840 if (resolved) 2841 *resolved = true; 2842 return ADDR_LE_DEV_PUBLIC; 2843 case ADDR_LE_DEV_RANDOM_RESOLVED: 2844 if (resolved) 2845 *resolved = true; 2846 return ADDR_LE_DEV_RANDOM; 2847 } 2848 2849 if (resolved) 2850 *resolved = false; 2851 return type; 2852 } 2853 2854 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2855 u8 peer_addr_type, u8 own_address_type, 2856 u8 filter_policy) 2857 { 2858 struct hci_conn *conn; 2859 2860 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2861 peer_addr_type); 2862 if (!conn) 2863 return; 2864 2865 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2866 2867 /* Store the initiator and responder address information which 2868 * is needed for SMP. These values will not change during the 2869 * lifetime of the connection. 2870 */ 2871 conn->init_addr_type = own_address_type; 2872 if (own_address_type == ADDR_LE_DEV_RANDOM) 2873 bacpy(&conn->init_addr, &hdev->random_addr); 2874 else 2875 bacpy(&conn->init_addr, &hdev->bdaddr); 2876 2877 conn->resp_addr_type = peer_addr_type; 2878 bacpy(&conn->resp_addr, peer_addr); 2879 } 2880 2881 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2882 { 2883 struct hci_cp_le_create_conn *cp; 2884 2885 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2886 2887 /* All connection failure handling is taken care of by the 2888 * hci_conn_failed function which is triggered by the HCI 2889 * request completion callbacks used for connecting. 2890 */ 2891 if (status) 2892 return; 2893 2894 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2895 if (!cp) 2896 return; 2897 2898 hci_dev_lock(hdev); 2899 2900 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2901 cp->own_address_type, cp->filter_policy); 2902 2903 hci_dev_unlock(hdev); 2904 } 2905 2906 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2907 { 2908 struct hci_cp_le_ext_create_conn *cp; 2909 2910 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2911 2912 /* All connection failure handling is taken care of by the 2913 * hci_conn_failed function which is triggered by the HCI 2914 * request completion callbacks used for connecting. 2915 */ 2916 if (status) 2917 return; 2918 2919 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2920 if (!cp) 2921 return; 2922 2923 hci_dev_lock(hdev); 2924 2925 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2926 cp->own_addr_type, cp->filter_policy); 2927 2928 hci_dev_unlock(hdev); 2929 } 2930 2931 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2932 { 2933 struct hci_cp_le_read_remote_features *cp; 2934 struct hci_conn *conn; 2935 2936 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2937 2938 if (!status) 2939 return; 2940 2941 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2942 if (!cp) 2943 return; 2944 2945 hci_dev_lock(hdev); 2946 2947 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2948 if (conn) { 2949 if (conn->state == BT_CONFIG) { 2950 hci_connect_cfm(conn, status); 2951 hci_conn_drop(conn); 2952 } 2953 } 2954 2955 hci_dev_unlock(hdev); 2956 } 2957 2958 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2959 { 2960 struct hci_cp_le_start_enc *cp; 2961 struct hci_conn *conn; 2962 2963 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2964 2965 if (!status) 2966 return; 2967 2968 hci_dev_lock(hdev); 2969 2970 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2971 if (!cp) 2972 goto unlock; 2973 2974 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2975 if (!conn) 2976 goto unlock; 2977 2978 if (conn->state != BT_CONNECTED) 2979 goto unlock; 2980 2981 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2982 hci_conn_drop(conn); 2983 2984 unlock: 2985 hci_dev_unlock(hdev); 2986 } 2987 2988 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2989 { 2990 struct hci_cp_switch_role *cp; 2991 struct hci_conn *conn; 2992 2993 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2994 2995 if (!status) 2996 return; 2997 2998 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 2999 if (!cp) 3000 return; 3001 3002 hci_dev_lock(hdev); 3003 3004 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 3005 if (conn) 3006 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 3007 3008 hci_dev_unlock(hdev); 3009 } 3010 3011 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 3012 struct sk_buff *skb) 3013 { 3014 struct hci_ev_status *ev = data; 3015 struct discovery_state *discov = &hdev->discovery; 3016 struct inquiry_entry *e; 3017 3018 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3019 3020 hci_conn_check_pending(hdev); 3021 3022 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 3023 return; 3024 3025 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 3026 wake_up_bit(&hdev->flags, HCI_INQUIRY); 3027 3028 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3029 return; 3030 3031 hci_dev_lock(hdev); 3032 3033 if (discov->state != DISCOVERY_FINDING) 3034 goto unlock; 3035 3036 if (list_empty(&discov->resolve)) { 3037 /* When BR/EDR inquiry is active and no LE scanning is in 3038 * progress, then change discovery state to indicate completion. 3039 * 3040 * When running LE scanning and BR/EDR inquiry simultaneously 3041 * and the LE scan already finished, then change the discovery 3042 * state to indicate completion. 3043 */ 3044 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3045 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3046 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3047 goto unlock; 3048 } 3049 3050 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 3051 if (e && hci_resolve_name(hdev, e) == 0) { 3052 e->name_state = NAME_PENDING; 3053 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 3054 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 3055 } else { 3056 /* When BR/EDR inquiry is active and no LE scanning is in 3057 * progress, then change discovery state to indicate completion. 3058 * 3059 * When running LE scanning and BR/EDR inquiry simultaneously 3060 * and the LE scan already finished, then change the discovery 3061 * state to indicate completion. 3062 */ 3063 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3064 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3065 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3066 } 3067 3068 unlock: 3069 hci_dev_unlock(hdev); 3070 } 3071 3072 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3073 struct sk_buff *skb) 3074 { 3075 struct hci_ev_inquiry_result *ev = edata; 3076 struct inquiry_data data; 3077 int i; 3078 3079 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3080 flex_array_size(ev, info, ev->num))) 3081 return; 3082 3083 bt_dev_dbg(hdev, "num %d", ev->num); 3084 3085 if (!ev->num) 3086 return; 3087 3088 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3089 return; 3090 3091 hci_dev_lock(hdev); 3092 3093 for (i = 0; i < ev->num; i++) { 3094 struct inquiry_info *info = &ev->info[i]; 3095 u32 flags; 3096 3097 bacpy(&data.bdaddr, &info->bdaddr); 3098 data.pscan_rep_mode = info->pscan_rep_mode; 3099 data.pscan_period_mode = info->pscan_period_mode; 3100 data.pscan_mode = info->pscan_mode; 3101 memcpy(data.dev_class, info->dev_class, 3); 3102 data.clock_offset = info->clock_offset; 3103 data.rssi = HCI_RSSI_INVALID; 3104 data.ssp_mode = 0x00; 3105 3106 flags = hci_inquiry_cache_update(hdev, &data, false); 3107 3108 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3109 info->dev_class, HCI_RSSI_INVALID, 3110 flags, NULL, 0, NULL, 0, 0); 3111 } 3112 3113 hci_dev_unlock(hdev); 3114 } 3115 3116 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3117 struct sk_buff *skb) 3118 { 3119 struct hci_ev_conn_complete *ev = data; 3120 struct hci_conn *conn; 3121 u8 status = ev->status; 3122 3123 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3124 3125 hci_dev_lock(hdev); 3126 3127 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3128 if (!conn) { 3129 /* In case of error status and there is no connection pending 3130 * just unlock as there is nothing to cleanup. 3131 */ 3132 if (ev->status) 3133 goto unlock; 3134 3135 /* Connection may not exist if auto-connected. Check the bredr 3136 * allowlist to see if this device is allowed to auto connect. 3137 * If link is an ACL type, create a connection class 3138 * automatically. 3139 * 3140 * Auto-connect will only occur if the event filter is 3141 * programmed with a given address. Right now, event filter is 3142 * only used during suspend. 3143 */ 3144 if (ev->link_type == ACL_LINK && 3145 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3146 &ev->bdaddr, 3147 BDADDR_BREDR)) { 3148 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, 3149 HCI_ROLE_SLAVE); 3150 if (!conn) { 3151 bt_dev_err(hdev, "no memory for new conn"); 3152 goto unlock; 3153 } 3154 } else { 3155 if (ev->link_type != SCO_LINK) 3156 goto unlock; 3157 3158 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3159 &ev->bdaddr); 3160 if (!conn) 3161 goto unlock; 3162 3163 conn->type = SCO_LINK; 3164 } 3165 } 3166 3167 /* The HCI_Connection_Complete event is only sent once per connection. 3168 * Processing it more than once per connection can corrupt kernel memory. 3169 * 3170 * As the connection handle is set here for the first time, it indicates 3171 * whether the connection is already set up. 3172 */ 3173 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 3174 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3175 goto unlock; 3176 } 3177 3178 if (!status) { 3179 conn->handle = __le16_to_cpu(ev->handle); 3180 if (conn->handle > HCI_CONN_HANDLE_MAX) { 3181 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", 3182 conn->handle, HCI_CONN_HANDLE_MAX); 3183 status = HCI_ERROR_INVALID_PARAMETERS; 3184 goto done; 3185 } 3186 3187 if (conn->type == ACL_LINK) { 3188 conn->state = BT_CONFIG; 3189 hci_conn_hold(conn); 3190 3191 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3192 !hci_find_link_key(hdev, &ev->bdaddr)) 3193 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3194 else 3195 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3196 } else 3197 conn->state = BT_CONNECTED; 3198 3199 hci_debugfs_create_conn(conn); 3200 hci_conn_add_sysfs(conn); 3201 3202 if (test_bit(HCI_AUTH, &hdev->flags)) 3203 set_bit(HCI_CONN_AUTH, &conn->flags); 3204 3205 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3206 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3207 3208 /* Get remote features */ 3209 if (conn->type == ACL_LINK) { 3210 struct hci_cp_read_remote_features cp; 3211 cp.handle = ev->handle; 3212 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3213 sizeof(cp), &cp); 3214 3215 hci_update_scan(hdev); 3216 } 3217 3218 /* Set packet type for incoming connection */ 3219 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3220 struct hci_cp_change_conn_ptype cp; 3221 cp.handle = ev->handle; 3222 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3223 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3224 &cp); 3225 } 3226 } 3227 3228 if (conn->type == ACL_LINK) 3229 hci_sco_setup(conn, ev->status); 3230 3231 done: 3232 if (status) { 3233 hci_conn_failed(conn, status); 3234 } else if (ev->link_type == SCO_LINK) { 3235 switch (conn->setting & SCO_AIRMODE_MASK) { 3236 case SCO_AIRMODE_CVSD: 3237 if (hdev->notify) 3238 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3239 break; 3240 } 3241 3242 hci_connect_cfm(conn, status); 3243 } 3244 3245 unlock: 3246 hci_dev_unlock(hdev); 3247 3248 hci_conn_check_pending(hdev); 3249 } 3250 3251 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3252 { 3253 struct hci_cp_reject_conn_req cp; 3254 3255 bacpy(&cp.bdaddr, bdaddr); 3256 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3257 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3258 } 3259 3260 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3261 struct sk_buff *skb) 3262 { 3263 struct hci_ev_conn_request *ev = data; 3264 int mask = hdev->link_mode; 3265 struct inquiry_entry *ie; 3266 struct hci_conn *conn; 3267 __u8 flags = 0; 3268 3269 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3270 3271 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3272 &flags); 3273 3274 if (!(mask & HCI_LM_ACCEPT)) { 3275 hci_reject_conn(hdev, &ev->bdaddr); 3276 return; 3277 } 3278 3279 hci_dev_lock(hdev); 3280 3281 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3282 BDADDR_BREDR)) { 3283 hci_reject_conn(hdev, &ev->bdaddr); 3284 goto unlock; 3285 } 3286 3287 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3288 * connection. These features are only touched through mgmt so 3289 * only do the checks if HCI_MGMT is set. 3290 */ 3291 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3292 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3293 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3294 BDADDR_BREDR)) { 3295 hci_reject_conn(hdev, &ev->bdaddr); 3296 goto unlock; 3297 } 3298 3299 /* Connection accepted */ 3300 3301 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3302 if (ie) 3303 memcpy(ie->data.dev_class, ev->dev_class, 3); 3304 3305 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3306 &ev->bdaddr); 3307 if (!conn) { 3308 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, 3309 HCI_ROLE_SLAVE); 3310 if (!conn) { 3311 bt_dev_err(hdev, "no memory for new connection"); 3312 goto unlock; 3313 } 3314 } 3315 3316 memcpy(conn->dev_class, ev->dev_class, 3); 3317 3318 hci_dev_unlock(hdev); 3319 3320 if (ev->link_type == ACL_LINK || 3321 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3322 struct hci_cp_accept_conn_req cp; 3323 conn->state = BT_CONNECT; 3324 3325 bacpy(&cp.bdaddr, &ev->bdaddr); 3326 3327 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3328 cp.role = 0x00; /* Become central */ 3329 else 3330 cp.role = 0x01; /* Remain peripheral */ 3331 3332 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3333 } else if (!(flags & HCI_PROTO_DEFER)) { 3334 struct hci_cp_accept_sync_conn_req cp; 3335 conn->state = BT_CONNECT; 3336 3337 bacpy(&cp.bdaddr, &ev->bdaddr); 3338 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3339 3340 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3341 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3342 cp.max_latency = cpu_to_le16(0xffff); 3343 cp.content_format = cpu_to_le16(hdev->voice_setting); 3344 cp.retrans_effort = 0xff; 3345 3346 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3347 &cp); 3348 } else { 3349 conn->state = BT_CONNECT2; 3350 hci_connect_cfm(conn, 0); 3351 } 3352 3353 return; 3354 unlock: 3355 hci_dev_unlock(hdev); 3356 } 3357 3358 static u8 hci_to_mgmt_reason(u8 err) 3359 { 3360 switch (err) { 3361 case HCI_ERROR_CONNECTION_TIMEOUT: 3362 return MGMT_DEV_DISCONN_TIMEOUT; 3363 case HCI_ERROR_REMOTE_USER_TERM: 3364 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3365 case HCI_ERROR_REMOTE_POWER_OFF: 3366 return MGMT_DEV_DISCONN_REMOTE; 3367 case HCI_ERROR_LOCAL_HOST_TERM: 3368 return MGMT_DEV_DISCONN_LOCAL_HOST; 3369 default: 3370 return MGMT_DEV_DISCONN_UNKNOWN; 3371 } 3372 } 3373 3374 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3375 struct sk_buff *skb) 3376 { 3377 struct hci_ev_disconn_complete *ev = data; 3378 u8 reason; 3379 struct hci_conn_params *params; 3380 struct hci_conn *conn; 3381 bool mgmt_connected; 3382 3383 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3384 3385 hci_dev_lock(hdev); 3386 3387 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3388 if (!conn) 3389 goto unlock; 3390 3391 if (ev->status) { 3392 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3393 conn->dst_type, ev->status); 3394 goto unlock; 3395 } 3396 3397 conn->state = BT_CLOSED; 3398 3399 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3400 3401 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3402 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3403 else 3404 reason = hci_to_mgmt_reason(ev->reason); 3405 3406 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3407 reason, mgmt_connected); 3408 3409 if (conn->type == ACL_LINK) { 3410 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3411 hci_remove_link_key(hdev, &conn->dst); 3412 3413 hci_update_scan(hdev); 3414 } 3415 3416 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 3417 if (params) { 3418 switch (params->auto_connect) { 3419 case HCI_AUTO_CONN_LINK_LOSS: 3420 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3421 break; 3422 fallthrough; 3423 3424 case HCI_AUTO_CONN_DIRECT: 3425 case HCI_AUTO_CONN_ALWAYS: 3426 list_del_init(¶ms->action); 3427 list_add(¶ms->action, &hdev->pend_le_conns); 3428 hci_update_passive_scan(hdev); 3429 break; 3430 3431 default: 3432 break; 3433 } 3434 } 3435 3436 hci_disconn_cfm(conn, ev->reason); 3437 3438 /* Re-enable advertising if necessary, since it might 3439 * have been disabled by the connection. From the 3440 * HCI_LE_Set_Advertise_Enable command description in 3441 * the core specification (v4.0): 3442 * "The Controller shall continue advertising until the Host 3443 * issues an LE_Set_Advertise_Enable command with 3444 * Advertising_Enable set to 0x00 (Advertising is disabled) 3445 * or until a connection is created or until the Advertising 3446 * is timed out due to Directed Advertising." 3447 */ 3448 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3449 hdev->cur_adv_instance = conn->adv_instance; 3450 hci_enable_advertising(hdev); 3451 } 3452 3453 hci_conn_del(conn); 3454 3455 unlock: 3456 hci_dev_unlock(hdev); 3457 } 3458 3459 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3460 struct sk_buff *skb) 3461 { 3462 struct hci_ev_auth_complete *ev = data; 3463 struct hci_conn *conn; 3464 3465 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3466 3467 hci_dev_lock(hdev); 3468 3469 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3470 if (!conn) 3471 goto unlock; 3472 3473 if (!ev->status) { 3474 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3475 3476 if (!hci_conn_ssp_enabled(conn) && 3477 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) { 3478 bt_dev_info(hdev, "re-auth of legacy device is not possible."); 3479 } else { 3480 set_bit(HCI_CONN_AUTH, &conn->flags); 3481 conn->sec_level = conn->pending_sec_level; 3482 } 3483 } else { 3484 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3485 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3486 3487 mgmt_auth_failed(conn, ev->status); 3488 } 3489 3490 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3491 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags); 3492 3493 if (conn->state == BT_CONFIG) { 3494 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3495 struct hci_cp_set_conn_encrypt cp; 3496 cp.handle = ev->handle; 3497 cp.encrypt = 0x01; 3498 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3499 &cp); 3500 } else { 3501 conn->state = BT_CONNECTED; 3502 hci_connect_cfm(conn, ev->status); 3503 hci_conn_drop(conn); 3504 } 3505 } else { 3506 hci_auth_cfm(conn, ev->status); 3507 3508 hci_conn_hold(conn); 3509 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3510 hci_conn_drop(conn); 3511 } 3512 3513 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3514 if (!ev->status) { 3515 struct hci_cp_set_conn_encrypt cp; 3516 cp.handle = ev->handle; 3517 cp.encrypt = 0x01; 3518 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3519 &cp); 3520 } else { 3521 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3522 hci_encrypt_cfm(conn, ev->status); 3523 } 3524 } 3525 3526 unlock: 3527 hci_dev_unlock(hdev); 3528 } 3529 3530 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3531 struct sk_buff *skb) 3532 { 3533 struct hci_ev_remote_name *ev = data; 3534 struct hci_conn *conn; 3535 3536 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3537 3538 hci_conn_check_pending(hdev); 3539 3540 hci_dev_lock(hdev); 3541 3542 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3543 3544 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3545 goto check_auth; 3546 3547 if (ev->status == 0) 3548 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3549 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3550 else 3551 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3552 3553 check_auth: 3554 if (!conn) 3555 goto unlock; 3556 3557 if (!hci_outgoing_auth_needed(hdev, conn)) 3558 goto unlock; 3559 3560 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3561 struct hci_cp_auth_requested cp; 3562 3563 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3564 3565 cp.handle = __cpu_to_le16(conn->handle); 3566 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3567 } 3568 3569 unlock: 3570 hci_dev_unlock(hdev); 3571 } 3572 3573 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3574 struct sk_buff *skb) 3575 { 3576 struct hci_ev_encrypt_change *ev = data; 3577 struct hci_conn *conn; 3578 3579 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3580 3581 hci_dev_lock(hdev); 3582 3583 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3584 if (!conn) 3585 goto unlock; 3586 3587 if (!ev->status) { 3588 if (ev->encrypt) { 3589 /* Encryption implies authentication */ 3590 set_bit(HCI_CONN_AUTH, &conn->flags); 3591 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3592 conn->sec_level = conn->pending_sec_level; 3593 3594 /* P-256 authentication key implies FIPS */ 3595 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3596 set_bit(HCI_CONN_FIPS, &conn->flags); 3597 3598 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3599 conn->type == LE_LINK) 3600 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3601 } else { 3602 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3603 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3604 } 3605 } 3606 3607 /* We should disregard the current RPA and generate a new one 3608 * whenever the encryption procedure fails. 3609 */ 3610 if (ev->status && conn->type == LE_LINK) { 3611 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3612 hci_adv_instances_set_rpa_expired(hdev, true); 3613 } 3614 3615 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3616 3617 /* Check link security requirements are met */ 3618 if (!hci_conn_check_link_mode(conn)) 3619 ev->status = HCI_ERROR_AUTH_FAILURE; 3620 3621 if (ev->status && conn->state == BT_CONNECTED) { 3622 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3623 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3624 3625 /* Notify upper layers so they can cleanup before 3626 * disconnecting. 3627 */ 3628 hci_encrypt_cfm(conn, ev->status); 3629 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3630 hci_conn_drop(conn); 3631 goto unlock; 3632 } 3633 3634 /* Try reading the encryption key size for encrypted ACL links */ 3635 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3636 struct hci_cp_read_enc_key_size cp; 3637 3638 /* Only send HCI_Read_Encryption_Key_Size if the 3639 * controller really supports it. If it doesn't, assume 3640 * the default size (16). 3641 */ 3642 if (!(hdev->commands[20] & 0x10)) { 3643 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3644 goto notify; 3645 } 3646 3647 cp.handle = cpu_to_le16(conn->handle); 3648 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3649 sizeof(cp), &cp)) { 3650 bt_dev_err(hdev, "sending read key size failed"); 3651 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3652 goto notify; 3653 } 3654 3655 goto unlock; 3656 } 3657 3658 /* Set the default Authenticated Payload Timeout after 3659 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3660 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3661 * sent when the link is active and Encryption is enabled, the conn 3662 * type can be either LE or ACL and controller must support LMP Ping. 3663 * Ensure for AES-CCM encryption as well. 3664 */ 3665 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3666 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3667 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3668 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3669 struct hci_cp_write_auth_payload_to cp; 3670 3671 cp.handle = cpu_to_le16(conn->handle); 3672 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3673 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3674 sizeof(cp), &cp)) { 3675 bt_dev_err(hdev, "write auth payload timeout failed"); 3676 goto notify; 3677 } 3678 3679 goto unlock; 3680 } 3681 3682 notify: 3683 hci_encrypt_cfm(conn, ev->status); 3684 3685 unlock: 3686 hci_dev_unlock(hdev); 3687 } 3688 3689 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3690 struct sk_buff *skb) 3691 { 3692 struct hci_ev_change_link_key_complete *ev = data; 3693 struct hci_conn *conn; 3694 3695 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3696 3697 hci_dev_lock(hdev); 3698 3699 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3700 if (conn) { 3701 if (!ev->status) 3702 set_bit(HCI_CONN_SECURE, &conn->flags); 3703 3704 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3705 3706 hci_key_change_cfm(conn, ev->status); 3707 } 3708 3709 hci_dev_unlock(hdev); 3710 } 3711 3712 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3713 struct sk_buff *skb) 3714 { 3715 struct hci_ev_remote_features *ev = data; 3716 struct hci_conn *conn; 3717 3718 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3719 3720 hci_dev_lock(hdev); 3721 3722 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3723 if (!conn) 3724 goto unlock; 3725 3726 if (!ev->status) 3727 memcpy(conn->features[0], ev->features, 8); 3728 3729 if (conn->state != BT_CONFIG) 3730 goto unlock; 3731 3732 if (!ev->status && lmp_ext_feat_capable(hdev) && 3733 lmp_ext_feat_capable(conn)) { 3734 struct hci_cp_read_remote_ext_features cp; 3735 cp.handle = ev->handle; 3736 cp.page = 0x01; 3737 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3738 sizeof(cp), &cp); 3739 goto unlock; 3740 } 3741 3742 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 3743 struct hci_cp_remote_name_req cp; 3744 memset(&cp, 0, sizeof(cp)); 3745 bacpy(&cp.bdaddr, &conn->dst); 3746 cp.pscan_rep_mode = 0x02; 3747 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3748 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 3749 mgmt_device_connected(hdev, conn, NULL, 0); 3750 3751 if (!hci_outgoing_auth_needed(hdev, conn)) { 3752 conn->state = BT_CONNECTED; 3753 hci_connect_cfm(conn, ev->status); 3754 hci_conn_drop(conn); 3755 } 3756 3757 unlock: 3758 hci_dev_unlock(hdev); 3759 } 3760 3761 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3762 { 3763 cancel_delayed_work(&hdev->cmd_timer); 3764 3765 rcu_read_lock(); 3766 if (!test_bit(HCI_RESET, &hdev->flags)) { 3767 if (ncmd) { 3768 cancel_delayed_work(&hdev->ncmd_timer); 3769 atomic_set(&hdev->cmd_cnt, 1); 3770 } else { 3771 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3772 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3773 HCI_NCMD_TIMEOUT); 3774 } 3775 } 3776 rcu_read_unlock(); 3777 } 3778 3779 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3780 struct sk_buff *skb) 3781 { 3782 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3783 3784 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3785 3786 if (rp->status) 3787 return rp->status; 3788 3789 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3790 hdev->le_pkts = rp->acl_max_pkt; 3791 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3792 hdev->iso_pkts = rp->iso_max_pkt; 3793 3794 hdev->le_cnt = hdev->le_pkts; 3795 hdev->iso_cnt = hdev->iso_pkts; 3796 3797 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3798 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3799 3800 return rp->status; 3801 } 3802 3803 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3804 struct sk_buff *skb) 3805 { 3806 struct hci_rp_le_set_cig_params *rp = data; 3807 struct hci_cp_le_set_cig_params *cp; 3808 struct hci_conn *conn; 3809 u8 status = rp->status; 3810 int i; 3811 3812 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3813 3814 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3815 if (!cp || rp->num_handles != cp->num_cis || rp->cig_id != cp->cig_id) { 3816 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3817 status = HCI_ERROR_UNSPECIFIED; 3818 } 3819 3820 hci_dev_lock(hdev); 3821 3822 if (status) { 3823 while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) { 3824 conn->state = BT_CLOSED; 3825 hci_connect_cfm(conn, status); 3826 hci_conn_del(conn); 3827 } 3828 goto unlock; 3829 } 3830 3831 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3832 * 3833 * If the Status return parameter is zero, then the Controller shall 3834 * set the Connection_Handle arrayed return parameter to the connection 3835 * handle(s) corresponding to the CIS configurations specified in 3836 * the CIS_IDs command parameter, in the same order. 3837 */ 3838 for (i = 0; i < rp->num_handles; ++i) { 3839 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3840 cp->cis[i].cis_id); 3841 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3842 continue; 3843 3844 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3845 continue; 3846 3847 conn->handle = __le16_to_cpu(rp->handle[i]); 3848 3849 bt_dev_dbg(hdev, "%p handle 0x%4.4x parent %p", conn, 3850 conn->handle, conn->parent); 3851 3852 /* Create CIS if LE is already connected */ 3853 if (conn->parent && conn->parent->state == BT_CONNECTED) 3854 hci_le_create_cis(conn); 3855 } 3856 3857 unlock: 3858 hci_dev_unlock(hdev); 3859 3860 return rp->status; 3861 } 3862 3863 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3864 struct sk_buff *skb) 3865 { 3866 struct hci_rp_le_setup_iso_path *rp = data; 3867 struct hci_cp_le_setup_iso_path *cp; 3868 struct hci_conn *conn; 3869 3870 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3871 3872 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3873 if (!cp) 3874 return rp->status; 3875 3876 hci_dev_lock(hdev); 3877 3878 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3879 if (!conn) 3880 goto unlock; 3881 3882 if (rp->status) { 3883 hci_connect_cfm(conn, rp->status); 3884 hci_conn_del(conn); 3885 goto unlock; 3886 } 3887 3888 switch (cp->direction) { 3889 /* Input (Host to Controller) */ 3890 case 0x00: 3891 /* Only confirm connection if output only */ 3892 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3893 hci_connect_cfm(conn, rp->status); 3894 break; 3895 /* Output (Controller to Host) */ 3896 case 0x01: 3897 /* Confirm connection since conn->iso_qos is always configured 3898 * last. 3899 */ 3900 hci_connect_cfm(conn, rp->status); 3901 break; 3902 } 3903 3904 unlock: 3905 hci_dev_unlock(hdev); 3906 return rp->status; 3907 } 3908 3909 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3910 { 3911 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3912 } 3913 3914 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3915 struct sk_buff *skb) 3916 { 3917 struct hci_ev_status *rp = data; 3918 struct hci_cp_le_set_per_adv_params *cp; 3919 3920 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3921 3922 if (rp->status) 3923 return rp->status; 3924 3925 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3926 if (!cp) 3927 return rp->status; 3928 3929 /* TODO: set the conn state */ 3930 return rp->status; 3931 } 3932 3933 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3934 struct sk_buff *skb) 3935 { 3936 struct hci_ev_status *rp = data; 3937 __u8 *sent; 3938 3939 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3940 3941 if (rp->status) 3942 return rp->status; 3943 3944 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3945 if (!sent) 3946 return rp->status; 3947 3948 hci_dev_lock(hdev); 3949 3950 if (*sent) 3951 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3952 else 3953 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3954 3955 hci_dev_unlock(hdev); 3956 3957 return rp->status; 3958 } 3959 3960 #define HCI_CC_VL(_op, _func, _min, _max) \ 3961 { \ 3962 .op = _op, \ 3963 .func = _func, \ 3964 .min_len = _min, \ 3965 .max_len = _max, \ 3966 } 3967 3968 #define HCI_CC(_op, _func, _len) \ 3969 HCI_CC_VL(_op, _func, _len, _len) 3970 3971 #define HCI_CC_STATUS(_op, _func) \ 3972 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 3973 3974 static const struct hci_cc { 3975 u16 op; 3976 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 3977 u16 min_len; 3978 u16 max_len; 3979 } hci_cc_table[] = { 3980 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 3981 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 3982 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 3983 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 3984 hci_cc_remote_name_req_cancel), 3985 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 3986 sizeof(struct hci_rp_role_discovery)), 3987 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 3988 sizeof(struct hci_rp_read_link_policy)), 3989 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 3990 sizeof(struct hci_rp_write_link_policy)), 3991 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 3992 sizeof(struct hci_rp_read_def_link_policy)), 3993 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 3994 hci_cc_write_def_link_policy), 3995 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 3996 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 3997 sizeof(struct hci_rp_read_stored_link_key)), 3998 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 3999 sizeof(struct hci_rp_delete_stored_link_key)), 4000 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4001 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4002 sizeof(struct hci_rp_read_local_name)), 4003 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4004 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4005 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4006 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4007 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4008 sizeof(struct hci_rp_read_class_of_dev)), 4009 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4010 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4011 sizeof(struct hci_rp_read_voice_setting)), 4012 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4013 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4014 sizeof(struct hci_rp_read_num_supported_iac)), 4015 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4016 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4017 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4018 sizeof(struct hci_rp_read_auth_payload_to)), 4019 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4020 sizeof(struct hci_rp_write_auth_payload_to)), 4021 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4022 sizeof(struct hci_rp_read_local_version)), 4023 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4024 sizeof(struct hci_rp_read_local_commands)), 4025 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4026 sizeof(struct hci_rp_read_local_features)), 4027 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4028 sizeof(struct hci_rp_read_local_ext_features)), 4029 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4030 sizeof(struct hci_rp_read_buffer_size)), 4031 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4032 sizeof(struct hci_rp_read_bd_addr)), 4033 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4034 sizeof(struct hci_rp_read_local_pairing_opts)), 4035 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4036 sizeof(struct hci_rp_read_page_scan_activity)), 4037 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4038 hci_cc_write_page_scan_activity), 4039 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4040 sizeof(struct hci_rp_read_page_scan_type)), 4041 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4042 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size, 4043 sizeof(struct hci_rp_read_data_block_size)), 4044 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode, 4045 sizeof(struct hci_rp_read_flow_control_mode)), 4046 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info, 4047 sizeof(struct hci_rp_read_local_amp_info)), 4048 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4049 sizeof(struct hci_rp_read_clock)), 4050 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4051 sizeof(struct hci_rp_read_enc_key_size)), 4052 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4053 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4054 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4055 hci_cc_read_def_err_data_reporting, 4056 sizeof(struct hci_rp_read_def_err_data_reporting)), 4057 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4058 hci_cc_write_def_err_data_reporting), 4059 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4060 sizeof(struct hci_rp_pin_code_reply)), 4061 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4062 sizeof(struct hci_rp_pin_code_neg_reply)), 4063 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4064 sizeof(struct hci_rp_read_local_oob_data)), 4065 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4066 sizeof(struct hci_rp_read_local_oob_ext_data)), 4067 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4068 sizeof(struct hci_rp_le_read_buffer_size)), 4069 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4070 sizeof(struct hci_rp_le_read_local_features)), 4071 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4072 sizeof(struct hci_rp_le_read_adv_tx_power)), 4073 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4074 sizeof(struct hci_rp_user_confirm_reply)), 4075 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4076 sizeof(struct hci_rp_user_confirm_reply)), 4077 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4078 sizeof(struct hci_rp_user_confirm_reply)), 4079 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4080 sizeof(struct hci_rp_user_confirm_reply)), 4081 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4082 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4083 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4084 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4085 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4086 hci_cc_le_read_accept_list_size, 4087 sizeof(struct hci_rp_le_read_accept_list_size)), 4088 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4089 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4090 hci_cc_le_add_to_accept_list), 4091 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4092 hci_cc_le_del_from_accept_list), 4093 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4094 sizeof(struct hci_rp_le_read_supported_states)), 4095 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4096 sizeof(struct hci_rp_le_read_def_data_len)), 4097 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4098 hci_cc_le_write_def_data_len), 4099 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4100 hci_cc_le_add_to_resolv_list), 4101 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4102 hci_cc_le_del_from_resolv_list), 4103 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4104 hci_cc_le_clear_resolv_list), 4105 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4106 sizeof(struct hci_rp_le_read_resolv_list_size)), 4107 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4108 hci_cc_le_set_addr_resolution_enable), 4109 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4110 sizeof(struct hci_rp_le_read_max_data_len)), 4111 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4112 hci_cc_write_le_host_supported), 4113 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4114 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4115 sizeof(struct hci_rp_read_rssi)), 4116 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4117 sizeof(struct hci_rp_read_tx_power)), 4118 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4119 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4120 hci_cc_le_set_ext_scan_param), 4121 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4122 hci_cc_le_set_ext_scan_enable), 4123 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4124 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4125 hci_cc_le_read_num_adv_sets, 4126 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4127 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4128 sizeof(struct hci_rp_le_set_ext_adv_params)), 4129 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4130 hci_cc_le_set_ext_adv_enable), 4131 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4132 hci_cc_le_set_adv_set_random_addr), 4133 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4134 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4135 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4136 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4137 hci_cc_le_set_per_adv_enable), 4138 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4139 sizeof(struct hci_rp_le_read_transmit_power)), 4140 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4141 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4142 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4143 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4144 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4145 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4146 sizeof(struct hci_rp_le_setup_iso_path)), 4147 }; 4148 4149 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4150 struct sk_buff *skb) 4151 { 4152 void *data; 4153 4154 if (skb->len < cc->min_len) { 4155 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4156 cc->op, skb->len, cc->min_len); 4157 return HCI_ERROR_UNSPECIFIED; 4158 } 4159 4160 /* Just warn if the length is over max_len size it still be possible to 4161 * partially parse the cc so leave to callback to decide if that is 4162 * acceptable. 4163 */ 4164 if (skb->len > cc->max_len) 4165 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4166 cc->op, skb->len, cc->max_len); 4167 4168 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4169 if (!data) 4170 return HCI_ERROR_UNSPECIFIED; 4171 4172 return cc->func(hdev, data, skb); 4173 } 4174 4175 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4176 struct sk_buff *skb, u16 *opcode, u8 *status, 4177 hci_req_complete_t *req_complete, 4178 hci_req_complete_skb_t *req_complete_skb) 4179 { 4180 struct hci_ev_cmd_complete *ev = data; 4181 int i; 4182 4183 *opcode = __le16_to_cpu(ev->opcode); 4184 4185 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4186 4187 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4188 if (hci_cc_table[i].op == *opcode) { 4189 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4190 break; 4191 } 4192 } 4193 4194 if (i == ARRAY_SIZE(hci_cc_table)) { 4195 /* Unknown opcode, assume byte 0 contains the status, so 4196 * that e.g. __hci_cmd_sync() properly returns errors 4197 * for vendor specific commands send by HCI drivers. 4198 * If a vendor doesn't actually follow this convention we may 4199 * need to introduce a vendor CC table in order to properly set 4200 * the status. 4201 */ 4202 *status = skb->data[0]; 4203 } 4204 4205 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4206 4207 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4208 req_complete_skb); 4209 4210 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4211 bt_dev_err(hdev, 4212 "unexpected event for opcode 0x%4.4x", *opcode); 4213 return; 4214 } 4215 4216 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4217 queue_work(hdev->workqueue, &hdev->cmd_work); 4218 } 4219 4220 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4221 { 4222 struct hci_cp_le_create_cis *cp; 4223 int i; 4224 4225 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4226 4227 if (!status) 4228 return; 4229 4230 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4231 if (!cp) 4232 return; 4233 4234 hci_dev_lock(hdev); 4235 4236 /* Remove connection if command failed */ 4237 for (i = 0; cp->num_cis; cp->num_cis--, i++) { 4238 struct hci_conn *conn; 4239 u16 handle; 4240 4241 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4242 4243 conn = hci_conn_hash_lookup_handle(hdev, handle); 4244 if (conn) { 4245 conn->state = BT_CLOSED; 4246 hci_connect_cfm(conn, status); 4247 hci_conn_del(conn); 4248 } 4249 } 4250 4251 hci_dev_unlock(hdev); 4252 } 4253 4254 #define HCI_CS(_op, _func) \ 4255 { \ 4256 .op = _op, \ 4257 .func = _func, \ 4258 } 4259 4260 static const struct hci_cs { 4261 u16 op; 4262 void (*func)(struct hci_dev *hdev, __u8 status); 4263 } hci_cs_table[] = { 4264 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4265 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4266 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4267 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4268 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4269 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4270 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4271 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4272 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4273 hci_cs_read_remote_ext_features), 4274 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4275 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4276 hci_cs_enhanced_setup_sync_conn), 4277 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4278 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4279 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4280 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4281 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4282 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4283 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4284 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4285 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4286 }; 4287 4288 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4289 struct sk_buff *skb, u16 *opcode, u8 *status, 4290 hci_req_complete_t *req_complete, 4291 hci_req_complete_skb_t *req_complete_skb) 4292 { 4293 struct hci_ev_cmd_status *ev = data; 4294 int i; 4295 4296 *opcode = __le16_to_cpu(ev->opcode); 4297 *status = ev->status; 4298 4299 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4300 4301 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4302 if (hci_cs_table[i].op == *opcode) { 4303 hci_cs_table[i].func(hdev, ev->status); 4304 break; 4305 } 4306 } 4307 4308 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4309 4310 /* Indicate request completion if the command failed. Also, if 4311 * we're not waiting for a special event and we get a success 4312 * command status we should try to flag the request as completed 4313 * (since for this kind of commands there will not be a command 4314 * complete event). 4315 */ 4316 if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) { 4317 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4318 req_complete_skb); 4319 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4320 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4321 *opcode); 4322 return; 4323 } 4324 } 4325 4326 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4327 queue_work(hdev->workqueue, &hdev->cmd_work); 4328 } 4329 4330 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4331 struct sk_buff *skb) 4332 { 4333 struct hci_ev_hardware_error *ev = data; 4334 4335 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4336 4337 hdev->hw_error_code = ev->code; 4338 4339 queue_work(hdev->req_workqueue, &hdev->error_reset); 4340 } 4341 4342 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4343 struct sk_buff *skb) 4344 { 4345 struct hci_ev_role_change *ev = data; 4346 struct hci_conn *conn; 4347 4348 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4349 4350 hci_dev_lock(hdev); 4351 4352 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4353 if (conn) { 4354 if (!ev->status) 4355 conn->role = ev->role; 4356 4357 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4358 4359 hci_role_switch_cfm(conn, ev->status, ev->role); 4360 } 4361 4362 hci_dev_unlock(hdev); 4363 } 4364 4365 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4366 struct sk_buff *skb) 4367 { 4368 struct hci_ev_num_comp_pkts *ev = data; 4369 int i; 4370 4371 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4372 flex_array_size(ev, handles, ev->num))) 4373 return; 4374 4375 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) { 4376 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode); 4377 return; 4378 } 4379 4380 bt_dev_dbg(hdev, "num %d", ev->num); 4381 4382 for (i = 0; i < ev->num; i++) { 4383 struct hci_comp_pkts_info *info = &ev->handles[i]; 4384 struct hci_conn *conn; 4385 __u16 handle, count; 4386 4387 handle = __le16_to_cpu(info->handle); 4388 count = __le16_to_cpu(info->count); 4389 4390 conn = hci_conn_hash_lookup_handle(hdev, handle); 4391 if (!conn) 4392 continue; 4393 4394 conn->sent -= count; 4395 4396 switch (conn->type) { 4397 case ACL_LINK: 4398 hdev->acl_cnt += count; 4399 if (hdev->acl_cnt > hdev->acl_pkts) 4400 hdev->acl_cnt = hdev->acl_pkts; 4401 break; 4402 4403 case LE_LINK: 4404 if (hdev->le_pkts) { 4405 hdev->le_cnt += count; 4406 if (hdev->le_cnt > hdev->le_pkts) 4407 hdev->le_cnt = hdev->le_pkts; 4408 } else { 4409 hdev->acl_cnt += count; 4410 if (hdev->acl_cnt > hdev->acl_pkts) 4411 hdev->acl_cnt = hdev->acl_pkts; 4412 } 4413 break; 4414 4415 case SCO_LINK: 4416 hdev->sco_cnt += count; 4417 if (hdev->sco_cnt > hdev->sco_pkts) 4418 hdev->sco_cnt = hdev->sco_pkts; 4419 break; 4420 4421 case ISO_LINK: 4422 if (hdev->iso_pkts) { 4423 hdev->iso_cnt += count; 4424 if (hdev->iso_cnt > hdev->iso_pkts) 4425 hdev->iso_cnt = hdev->iso_pkts; 4426 } else if (hdev->le_pkts) { 4427 hdev->le_cnt += count; 4428 if (hdev->le_cnt > hdev->le_pkts) 4429 hdev->le_cnt = hdev->le_pkts; 4430 } else { 4431 hdev->acl_cnt += count; 4432 if (hdev->acl_cnt > hdev->acl_pkts) 4433 hdev->acl_cnt = hdev->acl_pkts; 4434 } 4435 break; 4436 4437 default: 4438 bt_dev_err(hdev, "unknown type %d conn %p", 4439 conn->type, conn); 4440 break; 4441 } 4442 } 4443 4444 queue_work(hdev->workqueue, &hdev->tx_work); 4445 } 4446 4447 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev, 4448 __u16 handle) 4449 { 4450 struct hci_chan *chan; 4451 4452 switch (hdev->dev_type) { 4453 case HCI_PRIMARY: 4454 return hci_conn_hash_lookup_handle(hdev, handle); 4455 case HCI_AMP: 4456 chan = hci_chan_lookup_handle(hdev, handle); 4457 if (chan) 4458 return chan->conn; 4459 break; 4460 default: 4461 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); 4462 break; 4463 } 4464 4465 return NULL; 4466 } 4467 4468 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data, 4469 struct sk_buff *skb) 4470 { 4471 struct hci_ev_num_comp_blocks *ev = data; 4472 int i; 4473 4474 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS, 4475 flex_array_size(ev, handles, ev->num_hndl))) 4476 return; 4477 4478 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) { 4479 bt_dev_err(hdev, "wrong event for mode %d", 4480 hdev->flow_ctl_mode); 4481 return; 4482 } 4483 4484 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks, 4485 ev->num_hndl); 4486 4487 for (i = 0; i < ev->num_hndl; i++) { 4488 struct hci_comp_blocks_info *info = &ev->handles[i]; 4489 struct hci_conn *conn = NULL; 4490 __u16 handle, block_count; 4491 4492 handle = __le16_to_cpu(info->handle); 4493 block_count = __le16_to_cpu(info->blocks); 4494 4495 conn = __hci_conn_lookup_handle(hdev, handle); 4496 if (!conn) 4497 continue; 4498 4499 conn->sent -= block_count; 4500 4501 switch (conn->type) { 4502 case ACL_LINK: 4503 case AMP_LINK: 4504 hdev->block_cnt += block_count; 4505 if (hdev->block_cnt > hdev->num_blocks) 4506 hdev->block_cnt = hdev->num_blocks; 4507 break; 4508 4509 default: 4510 bt_dev_err(hdev, "unknown type %d conn %p", 4511 conn->type, conn); 4512 break; 4513 } 4514 } 4515 4516 queue_work(hdev->workqueue, &hdev->tx_work); 4517 } 4518 4519 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4520 struct sk_buff *skb) 4521 { 4522 struct hci_ev_mode_change *ev = data; 4523 struct hci_conn *conn; 4524 4525 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4526 4527 hci_dev_lock(hdev); 4528 4529 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4530 if (conn) { 4531 conn->mode = ev->mode; 4532 4533 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4534 &conn->flags)) { 4535 if (conn->mode == HCI_CM_ACTIVE) 4536 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4537 else 4538 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4539 } 4540 4541 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4542 hci_sco_setup(conn, ev->status); 4543 } 4544 4545 hci_dev_unlock(hdev); 4546 } 4547 4548 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4549 struct sk_buff *skb) 4550 { 4551 struct hci_ev_pin_code_req *ev = data; 4552 struct hci_conn *conn; 4553 4554 bt_dev_dbg(hdev, ""); 4555 4556 hci_dev_lock(hdev); 4557 4558 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4559 if (!conn) 4560 goto unlock; 4561 4562 if (conn->state == BT_CONNECTED) { 4563 hci_conn_hold(conn); 4564 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4565 hci_conn_drop(conn); 4566 } 4567 4568 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4569 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4570 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4571 sizeof(ev->bdaddr), &ev->bdaddr); 4572 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4573 u8 secure; 4574 4575 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4576 secure = 1; 4577 else 4578 secure = 0; 4579 4580 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4581 } 4582 4583 unlock: 4584 hci_dev_unlock(hdev); 4585 } 4586 4587 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4588 { 4589 if (key_type == HCI_LK_CHANGED_COMBINATION) 4590 return; 4591 4592 conn->pin_length = pin_len; 4593 conn->key_type = key_type; 4594 4595 switch (key_type) { 4596 case HCI_LK_LOCAL_UNIT: 4597 case HCI_LK_REMOTE_UNIT: 4598 case HCI_LK_DEBUG_COMBINATION: 4599 return; 4600 case HCI_LK_COMBINATION: 4601 if (pin_len == 16) 4602 conn->pending_sec_level = BT_SECURITY_HIGH; 4603 else 4604 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4605 break; 4606 case HCI_LK_UNAUTH_COMBINATION_P192: 4607 case HCI_LK_UNAUTH_COMBINATION_P256: 4608 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4609 break; 4610 case HCI_LK_AUTH_COMBINATION_P192: 4611 conn->pending_sec_level = BT_SECURITY_HIGH; 4612 break; 4613 case HCI_LK_AUTH_COMBINATION_P256: 4614 conn->pending_sec_level = BT_SECURITY_FIPS; 4615 break; 4616 } 4617 } 4618 4619 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4620 struct sk_buff *skb) 4621 { 4622 struct hci_ev_link_key_req *ev = data; 4623 struct hci_cp_link_key_reply cp; 4624 struct hci_conn *conn; 4625 struct link_key *key; 4626 4627 bt_dev_dbg(hdev, ""); 4628 4629 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4630 return; 4631 4632 hci_dev_lock(hdev); 4633 4634 key = hci_find_link_key(hdev, &ev->bdaddr); 4635 if (!key) { 4636 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4637 goto not_found; 4638 } 4639 4640 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4641 4642 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4643 if (conn) { 4644 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4645 4646 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4647 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4648 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4649 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4650 goto not_found; 4651 } 4652 4653 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4654 (conn->pending_sec_level == BT_SECURITY_HIGH || 4655 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4656 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4657 goto not_found; 4658 } 4659 4660 conn_set_key(conn, key->type, key->pin_len); 4661 } 4662 4663 bacpy(&cp.bdaddr, &ev->bdaddr); 4664 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4665 4666 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4667 4668 hci_dev_unlock(hdev); 4669 4670 return; 4671 4672 not_found: 4673 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4674 hci_dev_unlock(hdev); 4675 } 4676 4677 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4678 struct sk_buff *skb) 4679 { 4680 struct hci_ev_link_key_notify *ev = data; 4681 struct hci_conn *conn; 4682 struct link_key *key; 4683 bool persistent; 4684 u8 pin_len = 0; 4685 4686 bt_dev_dbg(hdev, ""); 4687 4688 hci_dev_lock(hdev); 4689 4690 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4691 if (!conn) 4692 goto unlock; 4693 4694 hci_conn_hold(conn); 4695 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4696 hci_conn_drop(conn); 4697 4698 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4699 conn_set_key(conn, ev->key_type, conn->pin_length); 4700 4701 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4702 goto unlock; 4703 4704 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4705 ev->key_type, pin_len, &persistent); 4706 if (!key) 4707 goto unlock; 4708 4709 /* Update connection information since adding the key will have 4710 * fixed up the type in the case of changed combination keys. 4711 */ 4712 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4713 conn_set_key(conn, key->type, key->pin_len); 4714 4715 mgmt_new_link_key(hdev, key, persistent); 4716 4717 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4718 * is set. If it's not set simply remove the key from the kernel 4719 * list (we've still notified user space about it but with 4720 * store_hint being 0). 4721 */ 4722 if (key->type == HCI_LK_DEBUG_COMBINATION && 4723 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4724 list_del_rcu(&key->list); 4725 kfree_rcu(key, rcu); 4726 goto unlock; 4727 } 4728 4729 if (persistent) 4730 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4731 else 4732 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4733 4734 unlock: 4735 hci_dev_unlock(hdev); 4736 } 4737 4738 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4739 struct sk_buff *skb) 4740 { 4741 struct hci_ev_clock_offset *ev = data; 4742 struct hci_conn *conn; 4743 4744 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4745 4746 hci_dev_lock(hdev); 4747 4748 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4749 if (conn && !ev->status) { 4750 struct inquiry_entry *ie; 4751 4752 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4753 if (ie) { 4754 ie->data.clock_offset = ev->clock_offset; 4755 ie->timestamp = jiffies; 4756 } 4757 } 4758 4759 hci_dev_unlock(hdev); 4760 } 4761 4762 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4763 struct sk_buff *skb) 4764 { 4765 struct hci_ev_pkt_type_change *ev = data; 4766 struct hci_conn *conn; 4767 4768 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4769 4770 hci_dev_lock(hdev); 4771 4772 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4773 if (conn && !ev->status) 4774 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4775 4776 hci_dev_unlock(hdev); 4777 } 4778 4779 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4780 struct sk_buff *skb) 4781 { 4782 struct hci_ev_pscan_rep_mode *ev = data; 4783 struct inquiry_entry *ie; 4784 4785 bt_dev_dbg(hdev, ""); 4786 4787 hci_dev_lock(hdev); 4788 4789 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4790 if (ie) { 4791 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4792 ie->timestamp = jiffies; 4793 } 4794 4795 hci_dev_unlock(hdev); 4796 } 4797 4798 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4799 struct sk_buff *skb) 4800 { 4801 struct hci_ev_inquiry_result_rssi *ev = edata; 4802 struct inquiry_data data; 4803 int i; 4804 4805 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4806 4807 if (!ev->num) 4808 return; 4809 4810 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4811 return; 4812 4813 hci_dev_lock(hdev); 4814 4815 if (skb->len == array_size(ev->num, 4816 sizeof(struct inquiry_info_rssi_pscan))) { 4817 struct inquiry_info_rssi_pscan *info; 4818 4819 for (i = 0; i < ev->num; i++) { 4820 u32 flags; 4821 4822 info = hci_ev_skb_pull(hdev, skb, 4823 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4824 sizeof(*info)); 4825 if (!info) { 4826 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4827 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4828 goto unlock; 4829 } 4830 4831 bacpy(&data.bdaddr, &info->bdaddr); 4832 data.pscan_rep_mode = info->pscan_rep_mode; 4833 data.pscan_period_mode = info->pscan_period_mode; 4834 data.pscan_mode = info->pscan_mode; 4835 memcpy(data.dev_class, info->dev_class, 3); 4836 data.clock_offset = info->clock_offset; 4837 data.rssi = info->rssi; 4838 data.ssp_mode = 0x00; 4839 4840 flags = hci_inquiry_cache_update(hdev, &data, false); 4841 4842 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4843 info->dev_class, info->rssi, 4844 flags, NULL, 0, NULL, 0, 0); 4845 } 4846 } else if (skb->len == array_size(ev->num, 4847 sizeof(struct inquiry_info_rssi))) { 4848 struct inquiry_info_rssi *info; 4849 4850 for (i = 0; i < ev->num; i++) { 4851 u32 flags; 4852 4853 info = hci_ev_skb_pull(hdev, skb, 4854 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4855 sizeof(*info)); 4856 if (!info) { 4857 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4858 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4859 goto unlock; 4860 } 4861 4862 bacpy(&data.bdaddr, &info->bdaddr); 4863 data.pscan_rep_mode = info->pscan_rep_mode; 4864 data.pscan_period_mode = info->pscan_period_mode; 4865 data.pscan_mode = 0x00; 4866 memcpy(data.dev_class, info->dev_class, 3); 4867 data.clock_offset = info->clock_offset; 4868 data.rssi = info->rssi; 4869 data.ssp_mode = 0x00; 4870 4871 flags = hci_inquiry_cache_update(hdev, &data, false); 4872 4873 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4874 info->dev_class, info->rssi, 4875 flags, NULL, 0, NULL, 0, 0); 4876 } 4877 } else { 4878 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4879 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4880 } 4881 unlock: 4882 hci_dev_unlock(hdev); 4883 } 4884 4885 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4886 struct sk_buff *skb) 4887 { 4888 struct hci_ev_remote_ext_features *ev = data; 4889 struct hci_conn *conn; 4890 4891 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4892 4893 hci_dev_lock(hdev); 4894 4895 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4896 if (!conn) 4897 goto unlock; 4898 4899 if (ev->page < HCI_MAX_PAGES) 4900 memcpy(conn->features[ev->page], ev->features, 8); 4901 4902 if (!ev->status && ev->page == 0x01) { 4903 struct inquiry_entry *ie; 4904 4905 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4906 if (ie) 4907 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4908 4909 if (ev->features[0] & LMP_HOST_SSP) { 4910 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4911 } else { 4912 /* It is mandatory by the Bluetooth specification that 4913 * Extended Inquiry Results are only used when Secure 4914 * Simple Pairing is enabled, but some devices violate 4915 * this. 4916 * 4917 * To make these devices work, the internal SSP 4918 * enabled flag needs to be cleared if the remote host 4919 * features do not indicate SSP support */ 4920 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4921 } 4922 4923 if (ev->features[0] & LMP_HOST_SC) 4924 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4925 } 4926 4927 if (conn->state != BT_CONFIG) 4928 goto unlock; 4929 4930 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4931 struct hci_cp_remote_name_req cp; 4932 memset(&cp, 0, sizeof(cp)); 4933 bacpy(&cp.bdaddr, &conn->dst); 4934 cp.pscan_rep_mode = 0x02; 4935 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4936 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 4937 mgmt_device_connected(hdev, conn, NULL, 0); 4938 4939 if (!hci_outgoing_auth_needed(hdev, conn)) { 4940 conn->state = BT_CONNECTED; 4941 hci_connect_cfm(conn, ev->status); 4942 hci_conn_drop(conn); 4943 } 4944 4945 unlock: 4946 hci_dev_unlock(hdev); 4947 } 4948 4949 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4950 struct sk_buff *skb) 4951 { 4952 struct hci_ev_sync_conn_complete *ev = data; 4953 struct hci_conn *conn; 4954 u8 status = ev->status; 4955 4956 switch (ev->link_type) { 4957 case SCO_LINK: 4958 case ESCO_LINK: 4959 break; 4960 default: 4961 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4962 * for HCI_Synchronous_Connection_Complete is limited to 4963 * either SCO or eSCO 4964 */ 4965 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4966 return; 4967 } 4968 4969 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4970 4971 hci_dev_lock(hdev); 4972 4973 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4974 if (!conn) { 4975 if (ev->link_type == ESCO_LINK) 4976 goto unlock; 4977 4978 /* When the link type in the event indicates SCO connection 4979 * and lookup of the connection object fails, then check 4980 * if an eSCO connection object exists. 4981 * 4982 * The core limits the synchronous connections to either 4983 * SCO or eSCO. The eSCO connection is preferred and tried 4984 * to be setup first and until successfully established, 4985 * the link type will be hinted as eSCO. 4986 */ 4987 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4988 if (!conn) 4989 goto unlock; 4990 } 4991 4992 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4993 * Processing it more than once per connection can corrupt kernel memory. 4994 * 4995 * As the connection handle is set here for the first time, it indicates 4996 * whether the connection is already set up. 4997 */ 4998 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 4999 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 5000 goto unlock; 5001 } 5002 5003 switch (status) { 5004 case 0x00: 5005 conn->handle = __le16_to_cpu(ev->handle); 5006 if (conn->handle > HCI_CONN_HANDLE_MAX) { 5007 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", 5008 conn->handle, HCI_CONN_HANDLE_MAX); 5009 status = HCI_ERROR_INVALID_PARAMETERS; 5010 conn->state = BT_CLOSED; 5011 break; 5012 } 5013 5014 conn->state = BT_CONNECTED; 5015 conn->type = ev->link_type; 5016 5017 hci_debugfs_create_conn(conn); 5018 hci_conn_add_sysfs(conn); 5019 break; 5020 5021 case 0x10: /* Connection Accept Timeout */ 5022 case 0x0d: /* Connection Rejected due to Limited Resources */ 5023 case 0x11: /* Unsupported Feature or Parameter Value */ 5024 case 0x1c: /* SCO interval rejected */ 5025 case 0x1a: /* Unsupported Remote Feature */ 5026 case 0x1e: /* Invalid LMP Parameters */ 5027 case 0x1f: /* Unspecified error */ 5028 case 0x20: /* Unsupported LMP Parameter value */ 5029 if (conn->out) { 5030 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 5031 (hdev->esco_type & EDR_ESCO_MASK); 5032 if (hci_setup_sync(conn, conn->parent->handle)) 5033 goto unlock; 5034 } 5035 fallthrough; 5036 5037 default: 5038 conn->state = BT_CLOSED; 5039 break; 5040 } 5041 5042 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5043 /* Notify only in case of SCO over HCI transport data path which 5044 * is zero and non-zero value shall be non-HCI transport data path 5045 */ 5046 if (conn->codec.data_path == 0 && hdev->notify) { 5047 switch (ev->air_mode) { 5048 case 0x02: 5049 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5050 break; 5051 case 0x03: 5052 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5053 break; 5054 } 5055 } 5056 5057 hci_connect_cfm(conn, status); 5058 if (status) 5059 hci_conn_del(conn); 5060 5061 unlock: 5062 hci_dev_unlock(hdev); 5063 } 5064 5065 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5066 { 5067 size_t parsed = 0; 5068 5069 while (parsed < eir_len) { 5070 u8 field_len = eir[0]; 5071 5072 if (field_len == 0) 5073 return parsed; 5074 5075 parsed += field_len + 1; 5076 eir += field_len + 1; 5077 } 5078 5079 return eir_len; 5080 } 5081 5082 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5083 struct sk_buff *skb) 5084 { 5085 struct hci_ev_ext_inquiry_result *ev = edata; 5086 struct inquiry_data data; 5087 size_t eir_len; 5088 int i; 5089 5090 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5091 flex_array_size(ev, info, ev->num))) 5092 return; 5093 5094 bt_dev_dbg(hdev, "num %d", ev->num); 5095 5096 if (!ev->num) 5097 return; 5098 5099 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5100 return; 5101 5102 hci_dev_lock(hdev); 5103 5104 for (i = 0; i < ev->num; i++) { 5105 struct extended_inquiry_info *info = &ev->info[i]; 5106 u32 flags; 5107 bool name_known; 5108 5109 bacpy(&data.bdaddr, &info->bdaddr); 5110 data.pscan_rep_mode = info->pscan_rep_mode; 5111 data.pscan_period_mode = info->pscan_period_mode; 5112 data.pscan_mode = 0x00; 5113 memcpy(data.dev_class, info->dev_class, 3); 5114 data.clock_offset = info->clock_offset; 5115 data.rssi = info->rssi; 5116 data.ssp_mode = 0x01; 5117 5118 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5119 name_known = eir_get_data(info->data, 5120 sizeof(info->data), 5121 EIR_NAME_COMPLETE, NULL); 5122 else 5123 name_known = true; 5124 5125 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5126 5127 eir_len = eir_get_length(info->data, sizeof(info->data)); 5128 5129 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5130 info->dev_class, info->rssi, 5131 flags, info->data, eir_len, NULL, 0, 0); 5132 } 5133 5134 hci_dev_unlock(hdev); 5135 } 5136 5137 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5138 struct sk_buff *skb) 5139 { 5140 struct hci_ev_key_refresh_complete *ev = data; 5141 struct hci_conn *conn; 5142 5143 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5144 __le16_to_cpu(ev->handle)); 5145 5146 hci_dev_lock(hdev); 5147 5148 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5149 if (!conn) 5150 goto unlock; 5151 5152 /* For BR/EDR the necessary steps are taken through the 5153 * auth_complete event. 5154 */ 5155 if (conn->type != LE_LINK) 5156 goto unlock; 5157 5158 if (!ev->status) 5159 conn->sec_level = conn->pending_sec_level; 5160 5161 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5162 5163 if (ev->status && conn->state == BT_CONNECTED) { 5164 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5165 hci_conn_drop(conn); 5166 goto unlock; 5167 } 5168 5169 if (conn->state == BT_CONFIG) { 5170 if (!ev->status) 5171 conn->state = BT_CONNECTED; 5172 5173 hci_connect_cfm(conn, ev->status); 5174 hci_conn_drop(conn); 5175 } else { 5176 hci_auth_cfm(conn, ev->status); 5177 5178 hci_conn_hold(conn); 5179 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5180 hci_conn_drop(conn); 5181 } 5182 5183 unlock: 5184 hci_dev_unlock(hdev); 5185 } 5186 5187 static u8 hci_get_auth_req(struct hci_conn *conn) 5188 { 5189 /* If remote requests no-bonding follow that lead */ 5190 if (conn->remote_auth == HCI_AT_NO_BONDING || 5191 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5192 return conn->remote_auth | (conn->auth_type & 0x01); 5193 5194 /* If both remote and local have enough IO capabilities, require 5195 * MITM protection 5196 */ 5197 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5198 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5199 return conn->remote_auth | 0x01; 5200 5201 /* No MITM protection possible so ignore remote requirement */ 5202 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5203 } 5204 5205 static u8 bredr_oob_data_present(struct hci_conn *conn) 5206 { 5207 struct hci_dev *hdev = conn->hdev; 5208 struct oob_data *data; 5209 5210 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5211 if (!data) 5212 return 0x00; 5213 5214 if (bredr_sc_enabled(hdev)) { 5215 /* When Secure Connections is enabled, then just 5216 * return the present value stored with the OOB 5217 * data. The stored value contains the right present 5218 * information. However it can only be trusted when 5219 * not in Secure Connection Only mode. 5220 */ 5221 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5222 return data->present; 5223 5224 /* When Secure Connections Only mode is enabled, then 5225 * the P-256 values are required. If they are not 5226 * available, then do not declare that OOB data is 5227 * present. 5228 */ 5229 if (!memcmp(data->rand256, ZERO_KEY, 16) || 5230 !memcmp(data->hash256, ZERO_KEY, 16)) 5231 return 0x00; 5232 5233 return 0x02; 5234 } 5235 5236 /* When Secure Connections is not enabled or actually 5237 * not supported by the hardware, then check that if 5238 * P-192 data values are present. 5239 */ 5240 if (!memcmp(data->rand192, ZERO_KEY, 16) || 5241 !memcmp(data->hash192, ZERO_KEY, 16)) 5242 return 0x00; 5243 5244 return 0x01; 5245 } 5246 5247 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5248 struct sk_buff *skb) 5249 { 5250 struct hci_ev_io_capa_request *ev = data; 5251 struct hci_conn *conn; 5252 5253 bt_dev_dbg(hdev, ""); 5254 5255 hci_dev_lock(hdev); 5256 5257 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5258 if (!conn) 5259 goto unlock; 5260 5261 hci_conn_hold(conn); 5262 5263 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5264 goto unlock; 5265 5266 /* Allow pairing if we're pairable, the initiators of the 5267 * pairing or if the remote is not requesting bonding. 5268 */ 5269 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5270 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5271 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5272 struct hci_cp_io_capability_reply cp; 5273 5274 bacpy(&cp.bdaddr, &ev->bdaddr); 5275 /* Change the IO capability from KeyboardDisplay 5276 * to DisplayYesNo as it is not supported by BT spec. */ 5277 cp.capability = (conn->io_capability == 0x04) ? 5278 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5279 5280 /* If we are initiators, there is no remote information yet */ 5281 if (conn->remote_auth == 0xff) { 5282 /* Request MITM protection if our IO caps allow it 5283 * except for the no-bonding case. 5284 */ 5285 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5286 conn->auth_type != HCI_AT_NO_BONDING) 5287 conn->auth_type |= 0x01; 5288 } else { 5289 conn->auth_type = hci_get_auth_req(conn); 5290 } 5291 5292 /* If we're not bondable, force one of the non-bondable 5293 * authentication requirement values. 5294 */ 5295 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5296 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5297 5298 cp.authentication = conn->auth_type; 5299 cp.oob_data = bredr_oob_data_present(conn); 5300 5301 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5302 sizeof(cp), &cp); 5303 } else { 5304 struct hci_cp_io_capability_neg_reply cp; 5305 5306 bacpy(&cp.bdaddr, &ev->bdaddr); 5307 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5308 5309 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5310 sizeof(cp), &cp); 5311 } 5312 5313 unlock: 5314 hci_dev_unlock(hdev); 5315 } 5316 5317 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5318 struct sk_buff *skb) 5319 { 5320 struct hci_ev_io_capa_reply *ev = data; 5321 struct hci_conn *conn; 5322 5323 bt_dev_dbg(hdev, ""); 5324 5325 hci_dev_lock(hdev); 5326 5327 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5328 if (!conn) 5329 goto unlock; 5330 5331 conn->remote_cap = ev->capability; 5332 conn->remote_auth = ev->authentication; 5333 5334 unlock: 5335 hci_dev_unlock(hdev); 5336 } 5337 5338 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5339 struct sk_buff *skb) 5340 { 5341 struct hci_ev_user_confirm_req *ev = data; 5342 int loc_mitm, rem_mitm, confirm_hint = 0; 5343 struct hci_conn *conn; 5344 5345 bt_dev_dbg(hdev, ""); 5346 5347 hci_dev_lock(hdev); 5348 5349 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5350 goto unlock; 5351 5352 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5353 if (!conn) 5354 goto unlock; 5355 5356 loc_mitm = (conn->auth_type & 0x01); 5357 rem_mitm = (conn->remote_auth & 0x01); 5358 5359 /* If we require MITM but the remote device can't provide that 5360 * (it has NoInputNoOutput) then reject the confirmation 5361 * request. We check the security level here since it doesn't 5362 * necessarily match conn->auth_type. 5363 */ 5364 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5365 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5366 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5367 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5368 sizeof(ev->bdaddr), &ev->bdaddr); 5369 goto unlock; 5370 } 5371 5372 /* If no side requires MITM protection; auto-accept */ 5373 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5374 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5375 5376 /* If we're not the initiators request authorization to 5377 * proceed from user space (mgmt_user_confirm with 5378 * confirm_hint set to 1). The exception is if neither 5379 * side had MITM or if the local IO capability is 5380 * NoInputNoOutput, in which case we do auto-accept 5381 */ 5382 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5383 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5384 (loc_mitm || rem_mitm)) { 5385 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5386 confirm_hint = 1; 5387 goto confirm; 5388 } 5389 5390 /* If there already exists link key in local host, leave the 5391 * decision to user space since the remote device could be 5392 * legitimate or malicious. 5393 */ 5394 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5395 bt_dev_dbg(hdev, "Local host already has link key"); 5396 confirm_hint = 1; 5397 goto confirm; 5398 } 5399 5400 BT_DBG("Auto-accept of user confirmation with %ums delay", 5401 hdev->auto_accept_delay); 5402 5403 if (hdev->auto_accept_delay > 0) { 5404 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5405 queue_delayed_work(conn->hdev->workqueue, 5406 &conn->auto_accept_work, delay); 5407 goto unlock; 5408 } 5409 5410 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5411 sizeof(ev->bdaddr), &ev->bdaddr); 5412 goto unlock; 5413 } 5414 5415 confirm: 5416 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5417 le32_to_cpu(ev->passkey), confirm_hint); 5418 5419 unlock: 5420 hci_dev_unlock(hdev); 5421 } 5422 5423 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5424 struct sk_buff *skb) 5425 { 5426 struct hci_ev_user_passkey_req *ev = data; 5427 5428 bt_dev_dbg(hdev, ""); 5429 5430 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5431 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5432 } 5433 5434 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5435 struct sk_buff *skb) 5436 { 5437 struct hci_ev_user_passkey_notify *ev = data; 5438 struct hci_conn *conn; 5439 5440 bt_dev_dbg(hdev, ""); 5441 5442 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5443 if (!conn) 5444 return; 5445 5446 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5447 conn->passkey_entered = 0; 5448 5449 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5450 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5451 conn->dst_type, conn->passkey_notify, 5452 conn->passkey_entered); 5453 } 5454 5455 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5456 struct sk_buff *skb) 5457 { 5458 struct hci_ev_keypress_notify *ev = data; 5459 struct hci_conn *conn; 5460 5461 bt_dev_dbg(hdev, ""); 5462 5463 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5464 if (!conn) 5465 return; 5466 5467 switch (ev->type) { 5468 case HCI_KEYPRESS_STARTED: 5469 conn->passkey_entered = 0; 5470 return; 5471 5472 case HCI_KEYPRESS_ENTERED: 5473 conn->passkey_entered++; 5474 break; 5475 5476 case HCI_KEYPRESS_ERASED: 5477 conn->passkey_entered--; 5478 break; 5479 5480 case HCI_KEYPRESS_CLEARED: 5481 conn->passkey_entered = 0; 5482 break; 5483 5484 case HCI_KEYPRESS_COMPLETED: 5485 return; 5486 } 5487 5488 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5489 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5490 conn->dst_type, conn->passkey_notify, 5491 conn->passkey_entered); 5492 } 5493 5494 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5495 struct sk_buff *skb) 5496 { 5497 struct hci_ev_simple_pair_complete *ev = data; 5498 struct hci_conn *conn; 5499 5500 bt_dev_dbg(hdev, ""); 5501 5502 hci_dev_lock(hdev); 5503 5504 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5505 if (!conn) 5506 goto unlock; 5507 5508 /* Reset the authentication requirement to unknown */ 5509 conn->remote_auth = 0xff; 5510 5511 /* To avoid duplicate auth_failed events to user space we check 5512 * the HCI_CONN_AUTH_PEND flag which will be set if we 5513 * initiated the authentication. A traditional auth_complete 5514 * event gets always produced as initiator and is also mapped to 5515 * the mgmt_auth_failed event */ 5516 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5517 mgmt_auth_failed(conn, ev->status); 5518 5519 hci_conn_drop(conn); 5520 5521 unlock: 5522 hci_dev_unlock(hdev); 5523 } 5524 5525 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5526 struct sk_buff *skb) 5527 { 5528 struct hci_ev_remote_host_features *ev = data; 5529 struct inquiry_entry *ie; 5530 struct hci_conn *conn; 5531 5532 bt_dev_dbg(hdev, ""); 5533 5534 hci_dev_lock(hdev); 5535 5536 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5537 if (conn) 5538 memcpy(conn->features[1], ev->features, 8); 5539 5540 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5541 if (ie) 5542 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5543 5544 hci_dev_unlock(hdev); 5545 } 5546 5547 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5548 struct sk_buff *skb) 5549 { 5550 struct hci_ev_remote_oob_data_request *ev = edata; 5551 struct oob_data *data; 5552 5553 bt_dev_dbg(hdev, ""); 5554 5555 hci_dev_lock(hdev); 5556 5557 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5558 goto unlock; 5559 5560 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5561 if (!data) { 5562 struct hci_cp_remote_oob_data_neg_reply cp; 5563 5564 bacpy(&cp.bdaddr, &ev->bdaddr); 5565 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5566 sizeof(cp), &cp); 5567 goto unlock; 5568 } 5569 5570 if (bredr_sc_enabled(hdev)) { 5571 struct hci_cp_remote_oob_ext_data_reply cp; 5572 5573 bacpy(&cp.bdaddr, &ev->bdaddr); 5574 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5575 memset(cp.hash192, 0, sizeof(cp.hash192)); 5576 memset(cp.rand192, 0, sizeof(cp.rand192)); 5577 } else { 5578 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5579 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5580 } 5581 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5582 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5583 5584 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5585 sizeof(cp), &cp); 5586 } else { 5587 struct hci_cp_remote_oob_data_reply cp; 5588 5589 bacpy(&cp.bdaddr, &ev->bdaddr); 5590 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5591 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5592 5593 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5594 sizeof(cp), &cp); 5595 } 5596 5597 unlock: 5598 hci_dev_unlock(hdev); 5599 } 5600 5601 #if IS_ENABLED(CONFIG_BT_HS) 5602 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data, 5603 struct sk_buff *skb) 5604 { 5605 struct hci_ev_channel_selected *ev = data; 5606 struct hci_conn *hcon; 5607 5608 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle); 5609 5610 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5611 if (!hcon) 5612 return; 5613 5614 amp_read_loc_assoc_final_data(hdev, hcon); 5615 } 5616 5617 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data, 5618 struct sk_buff *skb) 5619 { 5620 struct hci_ev_phy_link_complete *ev = data; 5621 struct hci_conn *hcon, *bredr_hcon; 5622 5623 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle, 5624 ev->status); 5625 5626 hci_dev_lock(hdev); 5627 5628 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5629 if (!hcon) 5630 goto unlock; 5631 5632 if (!hcon->amp_mgr) 5633 goto unlock; 5634 5635 if (ev->status) { 5636 hci_conn_del(hcon); 5637 goto unlock; 5638 } 5639 5640 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon; 5641 5642 hcon->state = BT_CONNECTED; 5643 bacpy(&hcon->dst, &bredr_hcon->dst); 5644 5645 hci_conn_hold(hcon); 5646 hcon->disc_timeout = HCI_DISCONN_TIMEOUT; 5647 hci_conn_drop(hcon); 5648 5649 hci_debugfs_create_conn(hcon); 5650 hci_conn_add_sysfs(hcon); 5651 5652 amp_physical_cfm(bredr_hcon, hcon); 5653 5654 unlock: 5655 hci_dev_unlock(hdev); 5656 } 5657 5658 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data, 5659 struct sk_buff *skb) 5660 { 5661 struct hci_ev_logical_link_complete *ev = data; 5662 struct hci_conn *hcon; 5663 struct hci_chan *hchan; 5664 struct amp_mgr *mgr; 5665 5666 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x", 5667 le16_to_cpu(ev->handle), ev->phy_handle, ev->status); 5668 5669 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5670 if (!hcon) 5671 return; 5672 5673 /* Create AMP hchan */ 5674 hchan = hci_chan_create(hcon); 5675 if (!hchan) 5676 return; 5677 5678 hchan->handle = le16_to_cpu(ev->handle); 5679 hchan->amp = true; 5680 5681 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan); 5682 5683 mgr = hcon->amp_mgr; 5684 if (mgr && mgr->bredr_chan) { 5685 struct l2cap_chan *bredr_chan = mgr->bredr_chan; 5686 5687 l2cap_chan_lock(bredr_chan); 5688 5689 bredr_chan->conn->mtu = hdev->block_mtu; 5690 l2cap_logical_cfm(bredr_chan, hchan, 0); 5691 hci_conn_hold(hcon); 5692 5693 l2cap_chan_unlock(bredr_chan); 5694 } 5695 } 5696 5697 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data, 5698 struct sk_buff *skb) 5699 { 5700 struct hci_ev_disconn_logical_link_complete *ev = data; 5701 struct hci_chan *hchan; 5702 5703 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", 5704 le16_to_cpu(ev->handle), ev->status); 5705 5706 if (ev->status) 5707 return; 5708 5709 hci_dev_lock(hdev); 5710 5711 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle)); 5712 if (!hchan || !hchan->amp) 5713 goto unlock; 5714 5715 amp_destroy_logical_link(hchan, ev->reason); 5716 5717 unlock: 5718 hci_dev_unlock(hdev); 5719 } 5720 5721 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data, 5722 struct sk_buff *skb) 5723 { 5724 struct hci_ev_disconn_phy_link_complete *ev = data; 5725 struct hci_conn *hcon; 5726 5727 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5728 5729 if (ev->status) 5730 return; 5731 5732 hci_dev_lock(hdev); 5733 5734 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5735 if (hcon && hcon->type == AMP_LINK) { 5736 hcon->state = BT_CLOSED; 5737 hci_disconn_cfm(hcon, ev->reason); 5738 hci_conn_del(hcon); 5739 } 5740 5741 hci_dev_unlock(hdev); 5742 } 5743 #endif 5744 5745 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5746 u8 bdaddr_type, bdaddr_t *local_rpa) 5747 { 5748 if (conn->out) { 5749 conn->dst_type = bdaddr_type; 5750 conn->resp_addr_type = bdaddr_type; 5751 bacpy(&conn->resp_addr, bdaddr); 5752 5753 /* Check if the controller has set a Local RPA then it must be 5754 * used instead or hdev->rpa. 5755 */ 5756 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5757 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5758 bacpy(&conn->init_addr, local_rpa); 5759 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5760 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5761 bacpy(&conn->init_addr, &conn->hdev->rpa); 5762 } else { 5763 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5764 &conn->init_addr_type); 5765 } 5766 } else { 5767 conn->resp_addr_type = conn->hdev->adv_addr_type; 5768 /* Check if the controller has set a Local RPA then it must be 5769 * used instead or hdev->rpa. 5770 */ 5771 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5772 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5773 bacpy(&conn->resp_addr, local_rpa); 5774 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5775 /* In case of ext adv, resp_addr will be updated in 5776 * Adv Terminated event. 5777 */ 5778 if (!ext_adv_capable(conn->hdev)) 5779 bacpy(&conn->resp_addr, 5780 &conn->hdev->random_addr); 5781 } else { 5782 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5783 } 5784 5785 conn->init_addr_type = bdaddr_type; 5786 bacpy(&conn->init_addr, bdaddr); 5787 5788 /* For incoming connections, set the default minimum 5789 * and maximum connection interval. They will be used 5790 * to check if the parameters are in range and if not 5791 * trigger the connection update procedure. 5792 */ 5793 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5794 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5795 } 5796 } 5797 5798 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5799 bdaddr_t *bdaddr, u8 bdaddr_type, 5800 bdaddr_t *local_rpa, u8 role, u16 handle, 5801 u16 interval, u16 latency, 5802 u16 supervision_timeout) 5803 { 5804 struct hci_conn_params *params; 5805 struct hci_conn *conn; 5806 struct smp_irk *irk; 5807 u8 addr_type; 5808 5809 hci_dev_lock(hdev); 5810 5811 /* All controllers implicitly stop advertising in the event of a 5812 * connection, so ensure that the state bit is cleared. 5813 */ 5814 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5815 5816 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5817 if (!conn) { 5818 /* In case of error status and there is no connection pending 5819 * just unlock as there is nothing to cleanup. 5820 */ 5821 if (status) 5822 goto unlock; 5823 5824 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role); 5825 if (!conn) { 5826 bt_dev_err(hdev, "no memory for new connection"); 5827 goto unlock; 5828 } 5829 5830 conn->dst_type = bdaddr_type; 5831 5832 /* If we didn't have a hci_conn object previously 5833 * but we're in central role this must be something 5834 * initiated using an accept list. Since accept list based 5835 * connections are not "first class citizens" we don't 5836 * have full tracking of them. Therefore, we go ahead 5837 * with a "best effort" approach of determining the 5838 * initiator address based on the HCI_PRIVACY flag. 5839 */ 5840 if (conn->out) { 5841 conn->resp_addr_type = bdaddr_type; 5842 bacpy(&conn->resp_addr, bdaddr); 5843 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5844 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5845 bacpy(&conn->init_addr, &hdev->rpa); 5846 } else { 5847 hci_copy_identity_address(hdev, 5848 &conn->init_addr, 5849 &conn->init_addr_type); 5850 } 5851 } 5852 } else { 5853 cancel_delayed_work(&conn->le_conn_timeout); 5854 } 5855 5856 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5857 * Processing it more than once per connection can corrupt kernel memory. 5858 * 5859 * As the connection handle is set here for the first time, it indicates 5860 * whether the connection is already set up. 5861 */ 5862 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 5863 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5864 goto unlock; 5865 } 5866 5867 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5868 5869 /* Lookup the identity address from the stored connection 5870 * address and address type. 5871 * 5872 * When establishing connections to an identity address, the 5873 * connection procedure will store the resolvable random 5874 * address first. Now if it can be converted back into the 5875 * identity address, start using the identity address from 5876 * now on. 5877 */ 5878 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5879 if (irk) { 5880 bacpy(&conn->dst, &irk->bdaddr); 5881 conn->dst_type = irk->addr_type; 5882 } 5883 5884 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5885 5886 if (handle > HCI_CONN_HANDLE_MAX) { 5887 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle, 5888 HCI_CONN_HANDLE_MAX); 5889 status = HCI_ERROR_INVALID_PARAMETERS; 5890 } 5891 5892 /* All connection failure handling is taken care of by the 5893 * hci_conn_failed function which is triggered by the HCI 5894 * request completion callbacks used for connecting. 5895 */ 5896 if (status) 5897 goto unlock; 5898 5899 /* Drop the connection if it has been aborted */ 5900 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5901 hci_conn_drop(conn); 5902 goto unlock; 5903 } 5904 5905 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5906 addr_type = BDADDR_LE_PUBLIC; 5907 else 5908 addr_type = BDADDR_LE_RANDOM; 5909 5910 /* Drop the connection if the device is blocked */ 5911 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5912 hci_conn_drop(conn); 5913 goto unlock; 5914 } 5915 5916 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 5917 mgmt_device_connected(hdev, conn, NULL, 0); 5918 5919 conn->sec_level = BT_SECURITY_LOW; 5920 conn->handle = handle; 5921 conn->state = BT_CONFIG; 5922 5923 /* Store current advertising instance as connection advertising instance 5924 * when sotfware rotation is in use so it can be re-enabled when 5925 * disconnected. 5926 */ 5927 if (!ext_adv_capable(hdev)) 5928 conn->adv_instance = hdev->cur_adv_instance; 5929 5930 conn->le_conn_interval = interval; 5931 conn->le_conn_latency = latency; 5932 conn->le_supv_timeout = supervision_timeout; 5933 5934 hci_debugfs_create_conn(conn); 5935 hci_conn_add_sysfs(conn); 5936 5937 /* The remote features procedure is defined for central 5938 * role only. So only in case of an initiated connection 5939 * request the remote features. 5940 * 5941 * If the local controller supports peripheral-initiated features 5942 * exchange, then requesting the remote features in peripheral 5943 * role is possible. Otherwise just transition into the 5944 * connected state without requesting the remote features. 5945 */ 5946 if (conn->out || 5947 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5948 struct hci_cp_le_read_remote_features cp; 5949 5950 cp.handle = __cpu_to_le16(conn->handle); 5951 5952 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5953 sizeof(cp), &cp); 5954 5955 hci_conn_hold(conn); 5956 } else { 5957 conn->state = BT_CONNECTED; 5958 hci_connect_cfm(conn, status); 5959 } 5960 5961 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5962 conn->dst_type); 5963 if (params) { 5964 list_del_init(¶ms->action); 5965 if (params->conn) { 5966 hci_conn_drop(params->conn); 5967 hci_conn_put(params->conn); 5968 params->conn = NULL; 5969 } 5970 } 5971 5972 unlock: 5973 hci_update_passive_scan(hdev); 5974 hci_dev_unlock(hdev); 5975 } 5976 5977 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5978 struct sk_buff *skb) 5979 { 5980 struct hci_ev_le_conn_complete *ev = data; 5981 5982 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5983 5984 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5985 NULL, ev->role, le16_to_cpu(ev->handle), 5986 le16_to_cpu(ev->interval), 5987 le16_to_cpu(ev->latency), 5988 le16_to_cpu(ev->supervision_timeout)); 5989 } 5990 5991 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5992 struct sk_buff *skb) 5993 { 5994 struct hci_ev_le_enh_conn_complete *ev = data; 5995 5996 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5997 5998 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5999 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 6000 le16_to_cpu(ev->interval), 6001 le16_to_cpu(ev->latency), 6002 le16_to_cpu(ev->supervision_timeout)); 6003 } 6004 6005 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 6006 struct sk_buff *skb) 6007 { 6008 struct hci_evt_le_ext_adv_set_term *ev = data; 6009 struct hci_conn *conn; 6010 struct adv_info *adv, *n; 6011 6012 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6013 6014 /* The Bluetooth Core 5.3 specification clearly states that this event 6015 * shall not be sent when the Host disables the advertising set. So in 6016 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 6017 * 6018 * When the Host disables an advertising set, all cleanup is done via 6019 * its command callback and not needed to be duplicated here. 6020 */ 6021 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 6022 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 6023 return; 6024 } 6025 6026 hci_dev_lock(hdev); 6027 6028 adv = hci_find_adv_instance(hdev, ev->handle); 6029 6030 if (ev->status) { 6031 if (!adv) 6032 goto unlock; 6033 6034 /* Remove advertising as it has been terminated */ 6035 hci_remove_adv_instance(hdev, ev->handle); 6036 mgmt_advertising_removed(NULL, hdev, ev->handle); 6037 6038 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 6039 if (adv->enabled) 6040 goto unlock; 6041 } 6042 6043 /* We are no longer advertising, clear HCI_LE_ADV */ 6044 hci_dev_clear_flag(hdev, HCI_LE_ADV); 6045 goto unlock; 6046 } 6047 6048 if (adv) 6049 adv->enabled = false; 6050 6051 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 6052 if (conn) { 6053 /* Store handle in the connection so the correct advertising 6054 * instance can be re-enabled when disconnected. 6055 */ 6056 conn->adv_instance = ev->handle; 6057 6058 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 6059 bacmp(&conn->resp_addr, BDADDR_ANY)) 6060 goto unlock; 6061 6062 if (!ev->handle) { 6063 bacpy(&conn->resp_addr, &hdev->random_addr); 6064 goto unlock; 6065 } 6066 6067 if (adv) 6068 bacpy(&conn->resp_addr, &adv->random_addr); 6069 } 6070 6071 unlock: 6072 hci_dev_unlock(hdev); 6073 } 6074 6075 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 6076 struct sk_buff *skb) 6077 { 6078 struct hci_ev_le_conn_update_complete *ev = data; 6079 struct hci_conn *conn; 6080 6081 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6082 6083 if (ev->status) 6084 return; 6085 6086 hci_dev_lock(hdev); 6087 6088 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6089 if (conn) { 6090 conn->le_conn_interval = le16_to_cpu(ev->interval); 6091 conn->le_conn_latency = le16_to_cpu(ev->latency); 6092 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 6093 } 6094 6095 hci_dev_unlock(hdev); 6096 } 6097 6098 /* This function requires the caller holds hdev->lock */ 6099 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 6100 bdaddr_t *addr, 6101 u8 addr_type, bool addr_resolved, 6102 u8 adv_type) 6103 { 6104 struct hci_conn *conn; 6105 struct hci_conn_params *params; 6106 6107 /* If the event is not connectable don't proceed further */ 6108 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 6109 return NULL; 6110 6111 /* Ignore if the device is blocked or hdev is suspended */ 6112 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 6113 hdev->suspended) 6114 return NULL; 6115 6116 /* Most controller will fail if we try to create new connections 6117 * while we have an existing one in peripheral role. 6118 */ 6119 if (hdev->conn_hash.le_num_peripheral > 0 && 6120 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || 6121 !(hdev->le_states[3] & 0x10))) 6122 return NULL; 6123 6124 /* If we're not connectable only connect devices that we have in 6125 * our pend_le_conns list. 6126 */ 6127 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 6128 addr_type); 6129 if (!params) 6130 return NULL; 6131 6132 if (!params->explicit_connect) { 6133 switch (params->auto_connect) { 6134 case HCI_AUTO_CONN_DIRECT: 6135 /* Only devices advertising with ADV_DIRECT_IND are 6136 * triggering a connection attempt. This is allowing 6137 * incoming connections from peripheral devices. 6138 */ 6139 if (adv_type != LE_ADV_DIRECT_IND) 6140 return NULL; 6141 break; 6142 case HCI_AUTO_CONN_ALWAYS: 6143 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 6144 * are triggering a connection attempt. This means 6145 * that incoming connections from peripheral device are 6146 * accepted and also outgoing connections to peripheral 6147 * devices are established when found. 6148 */ 6149 break; 6150 default: 6151 return NULL; 6152 } 6153 } 6154 6155 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 6156 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 6157 HCI_ROLE_MASTER); 6158 if (!IS_ERR(conn)) { 6159 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 6160 * by higher layer that tried to connect, if no then 6161 * store the pointer since we don't really have any 6162 * other owner of the object besides the params that 6163 * triggered it. This way we can abort the connection if 6164 * the parameters get removed and keep the reference 6165 * count consistent once the connection is established. 6166 */ 6167 6168 if (!params->explicit_connect) 6169 params->conn = hci_conn_get(conn); 6170 6171 return conn; 6172 } 6173 6174 switch (PTR_ERR(conn)) { 6175 case -EBUSY: 6176 /* If hci_connect() returns -EBUSY it means there is already 6177 * an LE connection attempt going on. Since controllers don't 6178 * support more than one connection attempt at the time, we 6179 * don't consider this an error case. 6180 */ 6181 break; 6182 default: 6183 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 6184 return NULL; 6185 } 6186 6187 return NULL; 6188 } 6189 6190 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6191 u8 bdaddr_type, bdaddr_t *direct_addr, 6192 u8 direct_addr_type, s8 rssi, u8 *data, u8 len, 6193 bool ext_adv, bool ctl_time, u64 instant) 6194 { 6195 struct discovery_state *d = &hdev->discovery; 6196 struct smp_irk *irk; 6197 struct hci_conn *conn; 6198 bool match, bdaddr_resolved; 6199 u32 flags; 6200 u8 *ptr; 6201 6202 switch (type) { 6203 case LE_ADV_IND: 6204 case LE_ADV_DIRECT_IND: 6205 case LE_ADV_SCAN_IND: 6206 case LE_ADV_NONCONN_IND: 6207 case LE_ADV_SCAN_RSP: 6208 break; 6209 default: 6210 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6211 "type: 0x%02x", type); 6212 return; 6213 } 6214 6215 if (!ext_adv && len > HCI_MAX_AD_LENGTH) { 6216 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes"); 6217 return; 6218 } 6219 6220 /* Find the end of the data in case the report contains padded zero 6221 * bytes at the end causing an invalid length value. 6222 * 6223 * When data is NULL, len is 0 so there is no need for extra ptr 6224 * check as 'ptr < data + 0' is already false in such case. 6225 */ 6226 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6227 if (ptr + 1 + *ptr > data + len) 6228 break; 6229 } 6230 6231 /* Adjust for actual length. This handles the case when remote 6232 * device is advertising with incorrect data length. 6233 */ 6234 len = ptr - data; 6235 6236 /* If the direct address is present, then this report is from 6237 * a LE Direct Advertising Report event. In that case it is 6238 * important to see if the address is matching the local 6239 * controller address. 6240 */ 6241 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6242 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6243 &bdaddr_resolved); 6244 6245 /* Only resolvable random addresses are valid for these 6246 * kind of reports and others can be ignored. 6247 */ 6248 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6249 return; 6250 6251 /* If the controller is not using resolvable random 6252 * addresses, then this report can be ignored. 6253 */ 6254 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6255 return; 6256 6257 /* If the local IRK of the controller does not match 6258 * with the resolvable random address provided, then 6259 * this report can be ignored. 6260 */ 6261 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6262 return; 6263 } 6264 6265 /* Check if we need to convert to identity address */ 6266 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6267 if (irk) { 6268 bdaddr = &irk->bdaddr; 6269 bdaddr_type = irk->addr_type; 6270 } 6271 6272 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6273 6274 /* Check if we have been requested to connect to this device. 6275 * 6276 * direct_addr is set only for directed advertising reports (it is NULL 6277 * for advertising reports) and is already verified to be RPA above. 6278 */ 6279 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6280 type); 6281 if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) { 6282 /* Store report for later inclusion by 6283 * mgmt_device_connected 6284 */ 6285 memcpy(conn->le_adv_data, data, len); 6286 conn->le_adv_data_len = len; 6287 } 6288 6289 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6290 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6291 else 6292 flags = 0; 6293 6294 /* All scan results should be sent up for Mesh systems */ 6295 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6296 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6297 rssi, flags, data, len, NULL, 0, instant); 6298 return; 6299 } 6300 6301 /* Passive scanning shouldn't trigger any device found events, 6302 * except for devices marked as CONN_REPORT for which we do send 6303 * device found events, or advertisement monitoring requested. 6304 */ 6305 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6306 if (type == LE_ADV_DIRECT_IND) 6307 return; 6308 6309 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6310 bdaddr, bdaddr_type) && 6311 idr_is_empty(&hdev->adv_monitors_idr)) 6312 return; 6313 6314 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6315 rssi, flags, data, len, NULL, 0, 0); 6316 return; 6317 } 6318 6319 /* When receiving non-connectable or scannable undirected 6320 * advertising reports, this means that the remote device is 6321 * not connectable and then clearly indicate this in the 6322 * device found event. 6323 * 6324 * When receiving a scan response, then there is no way to 6325 * know if the remote device is connectable or not. However 6326 * since scan responses are merged with a previously seen 6327 * advertising report, the flags field from that report 6328 * will be used. 6329 * 6330 * In the really unlikely case that a controller get confused 6331 * and just sends a scan response event, then it is marked as 6332 * not connectable as well. 6333 */ 6334 if (type == LE_ADV_SCAN_RSP) 6335 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6336 6337 /* If there's nothing pending either store the data from this 6338 * event or send an immediate device found event if the data 6339 * should not be stored for later. 6340 */ 6341 if (!ext_adv && !has_pending_adv_report(hdev)) { 6342 /* If the report will trigger a SCAN_REQ store it for 6343 * later merging. 6344 */ 6345 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6346 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6347 rssi, flags, data, len); 6348 return; 6349 } 6350 6351 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6352 rssi, flags, data, len, NULL, 0, 0); 6353 return; 6354 } 6355 6356 /* Check if the pending report is for the same device as the new one */ 6357 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6358 bdaddr_type == d->last_adv_addr_type); 6359 6360 /* If the pending data doesn't match this report or this isn't a 6361 * scan response (e.g. we got a duplicate ADV_IND) then force 6362 * sending of the pending data. 6363 */ 6364 if (type != LE_ADV_SCAN_RSP || !match) { 6365 /* Send out whatever is in the cache, but skip duplicates */ 6366 if (!match) 6367 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6368 d->last_adv_addr_type, NULL, 6369 d->last_adv_rssi, d->last_adv_flags, 6370 d->last_adv_data, 6371 d->last_adv_data_len, NULL, 0, 0); 6372 6373 /* If the new report will trigger a SCAN_REQ store it for 6374 * later merging. 6375 */ 6376 if (!ext_adv && (type == LE_ADV_IND || 6377 type == LE_ADV_SCAN_IND)) { 6378 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6379 rssi, flags, data, len); 6380 return; 6381 } 6382 6383 /* The advertising reports cannot be merged, so clear 6384 * the pending report and send out a device found event. 6385 */ 6386 clear_pending_adv_report(hdev); 6387 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6388 rssi, flags, data, len, NULL, 0, 0); 6389 return; 6390 } 6391 6392 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6393 * the new event is a SCAN_RSP. We can therefore proceed with 6394 * sending a merged device found event. 6395 */ 6396 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6397 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6398 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6399 clear_pending_adv_report(hdev); 6400 } 6401 6402 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6403 struct sk_buff *skb) 6404 { 6405 struct hci_ev_le_advertising_report *ev = data; 6406 u64 instant = jiffies; 6407 6408 if (!ev->num) 6409 return; 6410 6411 hci_dev_lock(hdev); 6412 6413 while (ev->num--) { 6414 struct hci_ev_le_advertising_info *info; 6415 s8 rssi; 6416 6417 info = hci_le_ev_skb_pull(hdev, skb, 6418 HCI_EV_LE_ADVERTISING_REPORT, 6419 sizeof(*info)); 6420 if (!info) 6421 break; 6422 6423 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6424 info->length + 1)) 6425 break; 6426 6427 if (info->length <= HCI_MAX_AD_LENGTH) { 6428 rssi = info->data[info->length]; 6429 process_adv_report(hdev, info->type, &info->bdaddr, 6430 info->bdaddr_type, NULL, 0, rssi, 6431 info->data, info->length, false, 6432 false, instant); 6433 } else { 6434 bt_dev_err(hdev, "Dropping invalid advertising data"); 6435 } 6436 } 6437 6438 hci_dev_unlock(hdev); 6439 } 6440 6441 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6442 { 6443 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6444 switch (evt_type) { 6445 case LE_LEGACY_ADV_IND: 6446 return LE_ADV_IND; 6447 case LE_LEGACY_ADV_DIRECT_IND: 6448 return LE_ADV_DIRECT_IND; 6449 case LE_LEGACY_ADV_SCAN_IND: 6450 return LE_ADV_SCAN_IND; 6451 case LE_LEGACY_NONCONN_IND: 6452 return LE_ADV_NONCONN_IND; 6453 case LE_LEGACY_SCAN_RSP_ADV: 6454 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6455 return LE_ADV_SCAN_RSP; 6456 } 6457 6458 goto invalid; 6459 } 6460 6461 if (evt_type & LE_EXT_ADV_CONN_IND) { 6462 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6463 return LE_ADV_DIRECT_IND; 6464 6465 return LE_ADV_IND; 6466 } 6467 6468 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6469 return LE_ADV_SCAN_RSP; 6470 6471 if (evt_type & LE_EXT_ADV_SCAN_IND) 6472 return LE_ADV_SCAN_IND; 6473 6474 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6475 evt_type & LE_EXT_ADV_DIRECT_IND) 6476 return LE_ADV_NONCONN_IND; 6477 6478 invalid: 6479 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6480 evt_type); 6481 6482 return LE_ADV_INVALID; 6483 } 6484 6485 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6486 struct sk_buff *skb) 6487 { 6488 struct hci_ev_le_ext_adv_report *ev = data; 6489 u64 instant = jiffies; 6490 6491 if (!ev->num) 6492 return; 6493 6494 hci_dev_lock(hdev); 6495 6496 while (ev->num--) { 6497 struct hci_ev_le_ext_adv_info *info; 6498 u8 legacy_evt_type; 6499 u16 evt_type; 6500 6501 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6502 sizeof(*info)); 6503 if (!info) 6504 break; 6505 6506 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6507 info->length)) 6508 break; 6509 6510 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6511 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6512 if (legacy_evt_type != LE_ADV_INVALID) { 6513 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6514 info->bdaddr_type, NULL, 0, 6515 info->rssi, info->data, info->length, 6516 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6517 false, instant); 6518 } 6519 } 6520 6521 hci_dev_unlock(hdev); 6522 } 6523 6524 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6525 { 6526 struct hci_cp_le_pa_term_sync cp; 6527 6528 memset(&cp, 0, sizeof(cp)); 6529 cp.handle = handle; 6530 6531 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6532 } 6533 6534 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6535 struct sk_buff *skb) 6536 { 6537 struct hci_ev_le_pa_sync_established *ev = data; 6538 int mask = hdev->link_mode; 6539 __u8 flags = 0; 6540 6541 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6542 6543 if (ev->status) 6544 return; 6545 6546 hci_dev_lock(hdev); 6547 6548 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6549 6550 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6551 if (!(mask & HCI_LM_ACCEPT)) 6552 hci_le_pa_term_sync(hdev, ev->handle); 6553 6554 hci_dev_unlock(hdev); 6555 } 6556 6557 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6558 struct sk_buff *skb) 6559 { 6560 struct hci_ev_le_remote_feat_complete *ev = data; 6561 struct hci_conn *conn; 6562 6563 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6564 6565 hci_dev_lock(hdev); 6566 6567 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6568 if (conn) { 6569 if (!ev->status) 6570 memcpy(conn->features[0], ev->features, 8); 6571 6572 if (conn->state == BT_CONFIG) { 6573 __u8 status; 6574 6575 /* If the local controller supports peripheral-initiated 6576 * features exchange, but the remote controller does 6577 * not, then it is possible that the error code 0x1a 6578 * for unsupported remote feature gets returned. 6579 * 6580 * In this specific case, allow the connection to 6581 * transition into connected state and mark it as 6582 * successful. 6583 */ 6584 if (!conn->out && ev->status == 0x1a && 6585 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6586 status = 0x00; 6587 else 6588 status = ev->status; 6589 6590 conn->state = BT_CONNECTED; 6591 hci_connect_cfm(conn, status); 6592 hci_conn_drop(conn); 6593 } 6594 } 6595 6596 hci_dev_unlock(hdev); 6597 } 6598 6599 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6600 struct sk_buff *skb) 6601 { 6602 struct hci_ev_le_ltk_req *ev = data; 6603 struct hci_cp_le_ltk_reply cp; 6604 struct hci_cp_le_ltk_neg_reply neg; 6605 struct hci_conn *conn; 6606 struct smp_ltk *ltk; 6607 6608 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6609 6610 hci_dev_lock(hdev); 6611 6612 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6613 if (conn == NULL) 6614 goto not_found; 6615 6616 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6617 if (!ltk) 6618 goto not_found; 6619 6620 if (smp_ltk_is_sc(ltk)) { 6621 /* With SC both EDiv and Rand are set to zero */ 6622 if (ev->ediv || ev->rand) 6623 goto not_found; 6624 } else { 6625 /* For non-SC keys check that EDiv and Rand match */ 6626 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6627 goto not_found; 6628 } 6629 6630 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6631 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6632 cp.handle = cpu_to_le16(conn->handle); 6633 6634 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6635 6636 conn->enc_key_size = ltk->enc_size; 6637 6638 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6639 6640 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6641 * temporary key used to encrypt a connection following 6642 * pairing. It is used during the Encrypted Session Setup to 6643 * distribute the keys. Later, security can be re-established 6644 * using a distributed LTK. 6645 */ 6646 if (ltk->type == SMP_STK) { 6647 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6648 list_del_rcu(<k->list); 6649 kfree_rcu(ltk, rcu); 6650 } else { 6651 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6652 } 6653 6654 hci_dev_unlock(hdev); 6655 6656 return; 6657 6658 not_found: 6659 neg.handle = ev->handle; 6660 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6661 hci_dev_unlock(hdev); 6662 } 6663 6664 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6665 u8 reason) 6666 { 6667 struct hci_cp_le_conn_param_req_neg_reply cp; 6668 6669 cp.handle = cpu_to_le16(handle); 6670 cp.reason = reason; 6671 6672 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6673 &cp); 6674 } 6675 6676 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6677 struct sk_buff *skb) 6678 { 6679 struct hci_ev_le_remote_conn_param_req *ev = data; 6680 struct hci_cp_le_conn_param_req_reply cp; 6681 struct hci_conn *hcon; 6682 u16 handle, min, max, latency, timeout; 6683 6684 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6685 6686 handle = le16_to_cpu(ev->handle); 6687 min = le16_to_cpu(ev->interval_min); 6688 max = le16_to_cpu(ev->interval_max); 6689 latency = le16_to_cpu(ev->latency); 6690 timeout = le16_to_cpu(ev->timeout); 6691 6692 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6693 if (!hcon || hcon->state != BT_CONNECTED) 6694 return send_conn_param_neg_reply(hdev, handle, 6695 HCI_ERROR_UNKNOWN_CONN_ID); 6696 6697 if (hci_check_conn_params(min, max, latency, timeout)) 6698 return send_conn_param_neg_reply(hdev, handle, 6699 HCI_ERROR_INVALID_LL_PARAMS); 6700 6701 if (hcon->role == HCI_ROLE_MASTER) { 6702 struct hci_conn_params *params; 6703 u8 store_hint; 6704 6705 hci_dev_lock(hdev); 6706 6707 params = hci_conn_params_lookup(hdev, &hcon->dst, 6708 hcon->dst_type); 6709 if (params) { 6710 params->conn_min_interval = min; 6711 params->conn_max_interval = max; 6712 params->conn_latency = latency; 6713 params->supervision_timeout = timeout; 6714 store_hint = 0x01; 6715 } else { 6716 store_hint = 0x00; 6717 } 6718 6719 hci_dev_unlock(hdev); 6720 6721 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6722 store_hint, min, max, latency, timeout); 6723 } 6724 6725 cp.handle = ev->handle; 6726 cp.interval_min = ev->interval_min; 6727 cp.interval_max = ev->interval_max; 6728 cp.latency = ev->latency; 6729 cp.timeout = ev->timeout; 6730 cp.min_ce_len = 0; 6731 cp.max_ce_len = 0; 6732 6733 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6734 } 6735 6736 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6737 struct sk_buff *skb) 6738 { 6739 struct hci_ev_le_direct_adv_report *ev = data; 6740 u64 instant = jiffies; 6741 int i; 6742 6743 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6744 flex_array_size(ev, info, ev->num))) 6745 return; 6746 6747 if (!ev->num) 6748 return; 6749 6750 hci_dev_lock(hdev); 6751 6752 for (i = 0; i < ev->num; i++) { 6753 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6754 6755 process_adv_report(hdev, info->type, &info->bdaddr, 6756 info->bdaddr_type, &info->direct_addr, 6757 info->direct_addr_type, info->rssi, NULL, 0, 6758 false, false, instant); 6759 } 6760 6761 hci_dev_unlock(hdev); 6762 } 6763 6764 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6765 struct sk_buff *skb) 6766 { 6767 struct hci_ev_le_phy_update_complete *ev = data; 6768 struct hci_conn *conn; 6769 6770 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6771 6772 if (ev->status) 6773 return; 6774 6775 hci_dev_lock(hdev); 6776 6777 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6778 if (!conn) 6779 goto unlock; 6780 6781 conn->le_tx_phy = ev->tx_phy; 6782 conn->le_rx_phy = ev->rx_phy; 6783 6784 unlock: 6785 hci_dev_unlock(hdev); 6786 } 6787 6788 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6789 struct sk_buff *skb) 6790 { 6791 struct hci_evt_le_cis_established *ev = data; 6792 struct hci_conn *conn; 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 if (conn->role == HCI_ROLE_SLAVE) { 6815 __le32 interval; 6816 6817 memset(&interval, 0, sizeof(interval)); 6818 6819 memcpy(&interval, ev->c_latency, sizeof(ev->c_latency)); 6820 conn->iso_qos.ucast.in.interval = le32_to_cpu(interval); 6821 memcpy(&interval, ev->p_latency, sizeof(ev->p_latency)); 6822 conn->iso_qos.ucast.out.interval = le32_to_cpu(interval); 6823 conn->iso_qos.ucast.in.latency = le16_to_cpu(ev->interval); 6824 conn->iso_qos.ucast.out.latency = le16_to_cpu(ev->interval); 6825 conn->iso_qos.ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6826 conn->iso_qos.ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6827 conn->iso_qos.ucast.in.phy = ev->c_phy; 6828 conn->iso_qos.ucast.out.phy = ev->p_phy; 6829 } 6830 6831 if (!ev->status) { 6832 conn->state = BT_CONNECTED; 6833 hci_debugfs_create_conn(conn); 6834 hci_conn_add_sysfs(conn); 6835 hci_iso_setup_path(conn); 6836 goto unlock; 6837 } 6838 6839 hci_connect_cfm(conn, ev->status); 6840 hci_conn_del(conn); 6841 6842 unlock: 6843 hci_dev_unlock(hdev); 6844 } 6845 6846 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6847 { 6848 struct hci_cp_le_reject_cis cp; 6849 6850 memset(&cp, 0, sizeof(cp)); 6851 cp.handle = handle; 6852 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6853 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6854 } 6855 6856 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6857 { 6858 struct hci_cp_le_accept_cis cp; 6859 6860 memset(&cp, 0, sizeof(cp)); 6861 cp.handle = handle; 6862 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6863 } 6864 6865 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6866 struct sk_buff *skb) 6867 { 6868 struct hci_evt_le_cis_req *ev = data; 6869 u16 acl_handle, cis_handle; 6870 struct hci_conn *acl, *cis; 6871 int mask; 6872 __u8 flags = 0; 6873 6874 acl_handle = __le16_to_cpu(ev->acl_handle); 6875 cis_handle = __le16_to_cpu(ev->cis_handle); 6876 6877 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6878 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6879 6880 hci_dev_lock(hdev); 6881 6882 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6883 if (!acl) 6884 goto unlock; 6885 6886 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 6887 if (!(mask & HCI_LM_ACCEPT)) { 6888 hci_le_reject_cis(hdev, ev->cis_handle); 6889 goto unlock; 6890 } 6891 6892 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6893 if (!cis) { 6894 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE); 6895 if (!cis) { 6896 hci_le_reject_cis(hdev, ev->cis_handle); 6897 goto unlock; 6898 } 6899 cis->handle = cis_handle; 6900 } 6901 6902 cis->iso_qos.ucast.cig = ev->cig_id; 6903 cis->iso_qos.ucast.cis = ev->cis_id; 6904 6905 if (!(flags & HCI_PROTO_DEFER)) { 6906 hci_le_accept_cis(hdev, ev->cis_handle); 6907 } else { 6908 cis->state = BT_CONNECT2; 6909 hci_connect_cfm(cis, 0); 6910 } 6911 6912 unlock: 6913 hci_dev_unlock(hdev); 6914 } 6915 6916 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6917 struct sk_buff *skb) 6918 { 6919 struct hci_evt_le_create_big_complete *ev = data; 6920 struct hci_conn *conn; 6921 6922 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6923 6924 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6925 flex_array_size(ev, bis_handle, ev->num_bis))) 6926 return; 6927 6928 hci_dev_lock(hdev); 6929 6930 conn = hci_conn_hash_lookup_big(hdev, ev->handle); 6931 if (!conn) 6932 goto unlock; 6933 6934 if (conn->type != ISO_LINK) { 6935 bt_dev_err(hdev, 6936 "Invalid connection link type handle 0x%2.2x", 6937 ev->handle); 6938 goto unlock; 6939 } 6940 6941 if (ev->num_bis) 6942 conn->handle = __le16_to_cpu(ev->bis_handle[0]); 6943 6944 if (!ev->status) { 6945 conn->state = BT_CONNECTED; 6946 hci_debugfs_create_conn(conn); 6947 hci_conn_add_sysfs(conn); 6948 hci_iso_setup_path(conn); 6949 goto unlock; 6950 } 6951 6952 hci_connect_cfm(conn, ev->status); 6953 hci_conn_del(conn); 6954 6955 unlock: 6956 hci_dev_unlock(hdev); 6957 } 6958 6959 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6960 struct sk_buff *skb) 6961 { 6962 struct hci_evt_le_big_sync_estabilished *ev = data; 6963 struct hci_conn *bis; 6964 int i; 6965 6966 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6967 6968 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 6969 flex_array_size(ev, bis, ev->num_bis))) 6970 return; 6971 6972 if (ev->status) 6973 return; 6974 6975 hci_dev_lock(hdev); 6976 6977 for (i = 0; i < ev->num_bis; i++) { 6978 u16 handle = le16_to_cpu(ev->bis[i]); 6979 __le32 interval; 6980 6981 bis = hci_conn_hash_lookup_handle(hdev, handle); 6982 if (!bis) { 6983 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 6984 HCI_ROLE_SLAVE); 6985 if (!bis) 6986 continue; 6987 bis->handle = handle; 6988 } 6989 6990 bis->iso_qos.bcast.big = ev->handle; 6991 memset(&interval, 0, sizeof(interval)); 6992 memcpy(&interval, ev->latency, sizeof(ev->latency)); 6993 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 6994 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 6995 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 6996 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 6997 6998 hci_iso_setup_path(bis); 6999 } 7000 7001 hci_dev_unlock(hdev); 7002 } 7003 7004 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7005 struct sk_buff *skb) 7006 { 7007 struct hci_evt_le_big_info_adv_report *ev = data; 7008 int mask = hdev->link_mode; 7009 __u8 flags = 0; 7010 7011 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7012 7013 hci_dev_lock(hdev); 7014 7015 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 7016 if (!(mask & HCI_LM_ACCEPT)) 7017 hci_le_pa_term_sync(hdev, ev->sync_handle); 7018 7019 hci_dev_unlock(hdev); 7020 } 7021 7022 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7023 [_op] = { \ 7024 .func = _func, \ 7025 .min_len = _min_len, \ 7026 .max_len = _max_len, \ 7027 } 7028 7029 #define HCI_LE_EV(_op, _func, _len) \ 7030 HCI_LE_EV_VL(_op, _func, _len, _len) 7031 7032 #define HCI_LE_EV_STATUS(_op, _func) \ 7033 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7034 7035 /* Entries in this table shall have their position according to the subevent 7036 * opcode they handle so the use of the macros above is recommend since it does 7037 * attempt to initialize at its proper index using Designated Initializers that 7038 * way events without a callback function can be ommited. 7039 */ 7040 static const struct hci_le_ev { 7041 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7042 u16 min_len; 7043 u16 max_len; 7044 } hci_le_ev_table[U8_MAX + 1] = { 7045 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7046 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7047 sizeof(struct hci_ev_le_conn_complete)), 7048 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7049 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7050 sizeof(struct hci_ev_le_advertising_report), 7051 HCI_MAX_EVENT_SIZE), 7052 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7053 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7054 hci_le_conn_update_complete_evt, 7055 sizeof(struct hci_ev_le_conn_update_complete)), 7056 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7057 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7058 hci_le_remote_feat_complete_evt, 7059 sizeof(struct hci_ev_le_remote_feat_complete)), 7060 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7061 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7062 sizeof(struct hci_ev_le_ltk_req)), 7063 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7064 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7065 hci_le_remote_conn_param_req_evt, 7066 sizeof(struct hci_ev_le_remote_conn_param_req)), 7067 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7068 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7069 hci_le_enh_conn_complete_evt, 7070 sizeof(struct hci_ev_le_enh_conn_complete)), 7071 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7072 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7073 sizeof(struct hci_ev_le_direct_adv_report), 7074 HCI_MAX_EVENT_SIZE), 7075 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7076 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7077 sizeof(struct hci_ev_le_phy_update_complete)), 7078 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7079 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7080 sizeof(struct hci_ev_le_ext_adv_report), 7081 HCI_MAX_EVENT_SIZE), 7082 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7083 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7084 hci_le_pa_sync_estabilished_evt, 7085 sizeof(struct hci_ev_le_pa_sync_established)), 7086 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7087 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7088 sizeof(struct hci_evt_le_ext_adv_set_term)), 7089 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7090 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7091 sizeof(struct hci_evt_le_cis_established)), 7092 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7093 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7094 sizeof(struct hci_evt_le_cis_req)), 7095 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7096 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7097 hci_le_create_big_complete_evt, 7098 sizeof(struct hci_evt_le_create_big_complete), 7099 HCI_MAX_EVENT_SIZE), 7100 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7101 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7102 hci_le_big_sync_established_evt, 7103 sizeof(struct hci_evt_le_big_sync_estabilished), 7104 HCI_MAX_EVENT_SIZE), 7105 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7106 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7107 hci_le_big_info_adv_report_evt, 7108 sizeof(struct hci_evt_le_big_info_adv_report), 7109 HCI_MAX_EVENT_SIZE), 7110 }; 7111 7112 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7113 struct sk_buff *skb, u16 *opcode, u8 *status, 7114 hci_req_complete_t *req_complete, 7115 hci_req_complete_skb_t *req_complete_skb) 7116 { 7117 struct hci_ev_le_meta *ev = data; 7118 const struct hci_le_ev *subev; 7119 7120 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7121 7122 /* Only match event if command OGF is for LE */ 7123 if (hdev->sent_cmd && 7124 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 && 7125 hci_skb_event(hdev->sent_cmd) == ev->subevent) { 7126 *opcode = hci_skb_opcode(hdev->sent_cmd); 7127 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7128 req_complete_skb); 7129 } 7130 7131 subev = &hci_le_ev_table[ev->subevent]; 7132 if (!subev->func) 7133 return; 7134 7135 if (skb->len < subev->min_len) { 7136 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7137 ev->subevent, skb->len, subev->min_len); 7138 return; 7139 } 7140 7141 /* Just warn if the length is over max_len size it still be 7142 * possible to partially parse the event so leave to callback to 7143 * decide if that is acceptable. 7144 */ 7145 if (skb->len > subev->max_len) 7146 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7147 ev->subevent, skb->len, subev->max_len); 7148 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7149 if (!data) 7150 return; 7151 7152 subev->func(hdev, data, skb); 7153 } 7154 7155 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7156 u8 event, struct sk_buff *skb) 7157 { 7158 struct hci_ev_cmd_complete *ev; 7159 struct hci_event_hdr *hdr; 7160 7161 if (!skb) 7162 return false; 7163 7164 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7165 if (!hdr) 7166 return false; 7167 7168 if (event) { 7169 if (hdr->evt != event) 7170 return false; 7171 return true; 7172 } 7173 7174 /* Check if request ended in Command Status - no way to retrieve 7175 * any extra parameters in this case. 7176 */ 7177 if (hdr->evt == HCI_EV_CMD_STATUS) 7178 return false; 7179 7180 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7181 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7182 hdr->evt); 7183 return false; 7184 } 7185 7186 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7187 if (!ev) 7188 return false; 7189 7190 if (opcode != __le16_to_cpu(ev->opcode)) { 7191 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7192 __le16_to_cpu(ev->opcode)); 7193 return false; 7194 } 7195 7196 return true; 7197 } 7198 7199 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7200 struct sk_buff *skb) 7201 { 7202 struct hci_ev_le_advertising_info *adv; 7203 struct hci_ev_le_direct_adv_info *direct_adv; 7204 struct hci_ev_le_ext_adv_info *ext_adv; 7205 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7206 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7207 7208 hci_dev_lock(hdev); 7209 7210 /* If we are currently suspended and this is the first BT event seen, 7211 * save the wake reason associated with the event. 7212 */ 7213 if (!hdev->suspended || hdev->wake_reason) 7214 goto unlock; 7215 7216 /* Default to remote wake. Values for wake_reason are documented in the 7217 * Bluez mgmt api docs. 7218 */ 7219 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7220 7221 /* Once configured for remote wakeup, we should only wake up for 7222 * reconnections. It's useful to see which device is waking us up so 7223 * keep track of the bdaddr of the connection event that woke us up. 7224 */ 7225 if (event == HCI_EV_CONN_REQUEST) { 7226 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7227 hdev->wake_addr_type = BDADDR_BREDR; 7228 } else if (event == HCI_EV_CONN_COMPLETE) { 7229 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7230 hdev->wake_addr_type = BDADDR_BREDR; 7231 } else if (event == HCI_EV_LE_META) { 7232 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7233 u8 subevent = le_ev->subevent; 7234 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7235 u8 num_reports = *ptr; 7236 7237 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7238 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7239 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7240 num_reports) { 7241 adv = (void *)(ptr + 1); 7242 direct_adv = (void *)(ptr + 1); 7243 ext_adv = (void *)(ptr + 1); 7244 7245 switch (subevent) { 7246 case HCI_EV_LE_ADVERTISING_REPORT: 7247 bacpy(&hdev->wake_addr, &adv->bdaddr); 7248 hdev->wake_addr_type = adv->bdaddr_type; 7249 break; 7250 case HCI_EV_LE_DIRECT_ADV_REPORT: 7251 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7252 hdev->wake_addr_type = direct_adv->bdaddr_type; 7253 break; 7254 case HCI_EV_LE_EXT_ADV_REPORT: 7255 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7256 hdev->wake_addr_type = ext_adv->bdaddr_type; 7257 break; 7258 } 7259 } 7260 } else { 7261 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7262 } 7263 7264 unlock: 7265 hci_dev_unlock(hdev); 7266 } 7267 7268 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7269 [_op] = { \ 7270 .req = false, \ 7271 .func = _func, \ 7272 .min_len = _min_len, \ 7273 .max_len = _max_len, \ 7274 } 7275 7276 #define HCI_EV(_op, _func, _len) \ 7277 HCI_EV_VL(_op, _func, _len, _len) 7278 7279 #define HCI_EV_STATUS(_op, _func) \ 7280 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7281 7282 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7283 [_op] = { \ 7284 .req = true, \ 7285 .func_req = _func, \ 7286 .min_len = _min_len, \ 7287 .max_len = _max_len, \ 7288 } 7289 7290 #define HCI_EV_REQ(_op, _func, _len) \ 7291 HCI_EV_REQ_VL(_op, _func, _len, _len) 7292 7293 /* Entries in this table shall have their position according to the event opcode 7294 * they handle so the use of the macros above is recommend since it does attempt 7295 * to initialize at its proper index using Designated Initializers that way 7296 * events without a callback function don't have entered. 7297 */ 7298 static const struct hci_ev { 7299 bool req; 7300 union { 7301 void (*func)(struct hci_dev *hdev, void *data, 7302 struct sk_buff *skb); 7303 void (*func_req)(struct hci_dev *hdev, void *data, 7304 struct sk_buff *skb, u16 *opcode, u8 *status, 7305 hci_req_complete_t *req_complete, 7306 hci_req_complete_skb_t *req_complete_skb); 7307 }; 7308 u16 min_len; 7309 u16 max_len; 7310 } hci_ev_table[U8_MAX + 1] = { 7311 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7312 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7313 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7314 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7315 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7316 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7317 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7318 sizeof(struct hci_ev_conn_complete)), 7319 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7320 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7321 sizeof(struct hci_ev_conn_request)), 7322 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7323 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7324 sizeof(struct hci_ev_disconn_complete)), 7325 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7326 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7327 sizeof(struct hci_ev_auth_complete)), 7328 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7329 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7330 sizeof(struct hci_ev_remote_name)), 7331 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7332 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7333 sizeof(struct hci_ev_encrypt_change)), 7334 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7335 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7336 hci_change_link_key_complete_evt, 7337 sizeof(struct hci_ev_change_link_key_complete)), 7338 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7339 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7340 sizeof(struct hci_ev_remote_features)), 7341 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7342 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7343 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7344 /* [0x0f = HCI_EV_CMD_STATUS] */ 7345 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7346 sizeof(struct hci_ev_cmd_status)), 7347 /* [0x10 = HCI_EV_CMD_STATUS] */ 7348 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7349 sizeof(struct hci_ev_hardware_error)), 7350 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7351 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7352 sizeof(struct hci_ev_role_change)), 7353 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7354 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7355 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7356 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7357 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7358 sizeof(struct hci_ev_mode_change)), 7359 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7360 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7361 sizeof(struct hci_ev_pin_code_req)), 7362 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7363 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7364 sizeof(struct hci_ev_link_key_req)), 7365 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7366 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7367 sizeof(struct hci_ev_link_key_notify)), 7368 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7369 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7370 sizeof(struct hci_ev_clock_offset)), 7371 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7372 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7373 sizeof(struct hci_ev_pkt_type_change)), 7374 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7375 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7376 sizeof(struct hci_ev_pscan_rep_mode)), 7377 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7378 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7379 hci_inquiry_result_with_rssi_evt, 7380 sizeof(struct hci_ev_inquiry_result_rssi), 7381 HCI_MAX_EVENT_SIZE), 7382 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7383 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7384 sizeof(struct hci_ev_remote_ext_features)), 7385 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7386 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7387 sizeof(struct hci_ev_sync_conn_complete)), 7388 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7389 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7390 hci_extended_inquiry_result_evt, 7391 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7392 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7393 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7394 sizeof(struct hci_ev_key_refresh_complete)), 7395 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7396 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7397 sizeof(struct hci_ev_io_capa_request)), 7398 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7399 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7400 sizeof(struct hci_ev_io_capa_reply)), 7401 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7402 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7403 sizeof(struct hci_ev_user_confirm_req)), 7404 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7405 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7406 sizeof(struct hci_ev_user_passkey_req)), 7407 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7408 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7409 sizeof(struct hci_ev_remote_oob_data_request)), 7410 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7411 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7412 sizeof(struct hci_ev_simple_pair_complete)), 7413 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7414 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7415 sizeof(struct hci_ev_user_passkey_notify)), 7416 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7417 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7418 sizeof(struct hci_ev_keypress_notify)), 7419 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7420 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7421 sizeof(struct hci_ev_remote_host_features)), 7422 /* [0x3e = HCI_EV_LE_META] */ 7423 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7424 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7425 #if IS_ENABLED(CONFIG_BT_HS) 7426 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */ 7427 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt, 7428 sizeof(struct hci_ev_phy_link_complete)), 7429 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */ 7430 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt, 7431 sizeof(struct hci_ev_channel_selected)), 7432 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */ 7433 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE, 7434 hci_disconn_loglink_complete_evt, 7435 sizeof(struct hci_ev_disconn_logical_link_complete)), 7436 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */ 7437 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt, 7438 sizeof(struct hci_ev_logical_link_complete)), 7439 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */ 7440 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE, 7441 hci_disconn_phylink_complete_evt, 7442 sizeof(struct hci_ev_disconn_phy_link_complete)), 7443 #endif 7444 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */ 7445 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt, 7446 sizeof(struct hci_ev_num_comp_blocks)), 7447 /* [0xff = HCI_EV_VENDOR] */ 7448 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7449 }; 7450 7451 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7452 u16 *opcode, u8 *status, 7453 hci_req_complete_t *req_complete, 7454 hci_req_complete_skb_t *req_complete_skb) 7455 { 7456 const struct hci_ev *ev = &hci_ev_table[event]; 7457 void *data; 7458 7459 if (!ev->func) 7460 return; 7461 7462 if (skb->len < ev->min_len) { 7463 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7464 event, skb->len, ev->min_len); 7465 return; 7466 } 7467 7468 /* Just warn if the length is over max_len size it still be 7469 * possible to partially parse the event so leave to callback to 7470 * decide if that is acceptable. 7471 */ 7472 if (skb->len > ev->max_len) 7473 bt_dev_warn_ratelimited(hdev, 7474 "unexpected event 0x%2.2x length: %u > %u", 7475 event, skb->len, ev->max_len); 7476 7477 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7478 if (!data) 7479 return; 7480 7481 if (ev->req) 7482 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7483 req_complete_skb); 7484 else 7485 ev->func(hdev, data, skb); 7486 } 7487 7488 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7489 { 7490 struct hci_event_hdr *hdr = (void *) skb->data; 7491 hci_req_complete_t req_complete = NULL; 7492 hci_req_complete_skb_t req_complete_skb = NULL; 7493 struct sk_buff *orig_skb = NULL; 7494 u8 status = 0, event, req_evt = 0; 7495 u16 opcode = HCI_OP_NOP; 7496 7497 if (skb->len < sizeof(*hdr)) { 7498 bt_dev_err(hdev, "Malformed HCI Event"); 7499 goto done; 7500 } 7501 7502 kfree_skb(hdev->recv_event); 7503 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7504 7505 event = hdr->evt; 7506 if (!event) { 7507 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7508 event); 7509 goto done; 7510 } 7511 7512 /* Only match event if command OGF is not for LE */ 7513 if (hdev->sent_cmd && 7514 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 && 7515 hci_skb_event(hdev->sent_cmd) == event) { 7516 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd), 7517 status, &req_complete, &req_complete_skb); 7518 req_evt = event; 7519 } 7520 7521 /* If it looks like we might end up having to call 7522 * req_complete_skb, store a pristine copy of the skb since the 7523 * various handlers may modify the original one through 7524 * skb_pull() calls, etc. 7525 */ 7526 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7527 event == HCI_EV_CMD_COMPLETE) 7528 orig_skb = skb_clone(skb, GFP_KERNEL); 7529 7530 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7531 7532 /* Store wake reason if we're suspended */ 7533 hci_store_wake_reason(hdev, event, skb); 7534 7535 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7536 7537 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7538 &req_complete_skb); 7539 7540 if (req_complete) { 7541 req_complete(hdev, status, opcode); 7542 } else if (req_complete_skb) { 7543 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7544 kfree_skb(orig_skb); 7545 orig_skb = NULL; 7546 } 7547 req_complete_skb(hdev, status, opcode, orig_skb); 7548 } 7549 7550 done: 7551 kfree_skb(orig_skb); 7552 kfree_skb(skb); 7553 hdev->stat.evt_rx++; 7554 } 7555