1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 Copyright 2023-2024 NXP 5 6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License version 2 as 10 published by the Free Software Foundation; 11 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 23 SOFTWARE IS DISCLAIMED. 24 */ 25 26 /* Bluetooth HCI event handling. */ 27 28 #include <linux/unaligned.h> 29 #include <linux/crypto.h> 30 #include <crypto/algapi.h> 31 32 #include <net/bluetooth/bluetooth.h> 33 #include <net/bluetooth/hci_core.h> 34 #include <net/bluetooth/mgmt.h> 35 36 #include "hci_debugfs.h" 37 #include "hci_codec.h" 38 #include "smp.h" 39 #include "msft.h" 40 #include "eir.h" 41 42 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ 43 "\x00\x00\x00\x00\x00\x00\x00\x00" 44 45 /* Handle HCI Event packets */ 46 47 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 48 u8 ev, size_t len) 49 { 50 void *data; 51 52 data = skb_pull_data(skb, len); 53 if (!data) 54 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev); 55 56 return data; 57 } 58 59 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 60 u16 op, size_t len) 61 { 62 void *data; 63 64 data = skb_pull_data(skb, len); 65 if (!data) 66 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op); 67 68 return data; 69 } 70 71 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 72 u8 ev, size_t len) 73 { 74 void *data; 75 76 data = skb_pull_data(skb, len); 77 if (!data) 78 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev); 79 80 return data; 81 } 82 83 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data, 84 struct sk_buff *skb) 85 { 86 struct hci_ev_status *rp = data; 87 88 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 89 90 /* It is possible that we receive Inquiry Complete event right 91 * before we receive Inquiry Cancel Command Complete event, in 92 * which case the latter event should have status of Command 93 * Disallowed. This should not be treated as error, since 94 * we actually achieve what Inquiry Cancel wants to achieve, 95 * which is to end the last Inquiry session. 96 */ 97 if (rp->status == HCI_ERROR_COMMAND_DISALLOWED && !test_bit(HCI_INQUIRY, &hdev->flags)) { 98 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command"); 99 rp->status = 0x00; 100 } 101 102 if (rp->status) 103 return rp->status; 104 105 clear_bit(HCI_INQUIRY, &hdev->flags); 106 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 107 wake_up_bit(&hdev->flags, HCI_INQUIRY); 108 109 hci_dev_lock(hdev); 110 /* Set discovery state to stopped if we're not doing LE active 111 * scanning. 112 */ 113 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 114 hdev->le_scan_type != LE_SCAN_ACTIVE) 115 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 116 hci_dev_unlock(hdev); 117 118 return rp->status; 119 } 120 121 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data, 122 struct sk_buff *skb) 123 { 124 struct hci_ev_status *rp = data; 125 126 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 127 128 if (rp->status) 129 return rp->status; 130 131 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ); 132 133 return rp->status; 134 } 135 136 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data, 137 struct sk_buff *skb) 138 { 139 struct hci_ev_status *rp = data; 140 141 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 142 143 if (rp->status) 144 return rp->status; 145 146 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); 147 148 return rp->status; 149 } 150 151 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data, 152 struct sk_buff *skb) 153 { 154 struct hci_ev_status *rp = data; 155 156 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 157 158 return rp->status; 159 } 160 161 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data, 162 struct sk_buff *skb) 163 { 164 struct hci_rp_role_discovery *rp = data; 165 struct hci_conn *conn; 166 167 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 168 169 if (rp->status) 170 return rp->status; 171 172 hci_dev_lock(hdev); 173 174 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 175 if (conn) 176 conn->role = rp->role; 177 178 hci_dev_unlock(hdev); 179 180 return rp->status; 181 } 182 183 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data, 184 struct sk_buff *skb) 185 { 186 struct hci_rp_read_link_policy *rp = data; 187 struct hci_conn *conn; 188 189 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 190 191 if (rp->status) 192 return rp->status; 193 194 hci_dev_lock(hdev); 195 196 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 197 if (conn) 198 conn->link_policy = __le16_to_cpu(rp->policy); 199 200 hci_dev_unlock(hdev); 201 202 return rp->status; 203 } 204 205 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data, 206 struct sk_buff *skb) 207 { 208 struct hci_rp_write_link_policy *rp = data; 209 struct hci_conn *conn; 210 void *sent; 211 212 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 213 214 if (rp->status) 215 return rp->status; 216 217 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY); 218 if (!sent) 219 return rp->status; 220 221 hci_dev_lock(hdev); 222 223 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 224 if (conn) 225 conn->link_policy = get_unaligned_le16(sent + 2); 226 227 hci_dev_unlock(hdev); 228 229 return rp->status; 230 } 231 232 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data, 233 struct sk_buff *skb) 234 { 235 struct hci_rp_read_def_link_policy *rp = data; 236 237 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 238 239 if (rp->status) 240 return rp->status; 241 242 hdev->link_policy = __le16_to_cpu(rp->policy); 243 244 return rp->status; 245 } 246 247 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data, 248 struct sk_buff *skb) 249 { 250 struct hci_ev_status *rp = data; 251 void *sent; 252 253 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 254 255 if (rp->status) 256 return rp->status; 257 258 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY); 259 if (!sent) 260 return rp->status; 261 262 hdev->link_policy = get_unaligned_le16(sent); 263 264 return rp->status; 265 } 266 267 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb) 268 { 269 struct hci_ev_status *rp = data; 270 271 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 272 273 clear_bit(HCI_RESET, &hdev->flags); 274 275 if (rp->status) 276 return rp->status; 277 278 /* Reset all non-persistent flags */ 279 hci_dev_clear_volatile_flags(hdev); 280 281 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 282 283 hdev->inq_tx_power = HCI_TX_POWER_INVALID; 284 hdev->adv_tx_power = HCI_TX_POWER_INVALID; 285 286 memset(hdev->adv_data, 0, sizeof(hdev->adv_data)); 287 hdev->adv_data_len = 0; 288 289 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data)); 290 hdev->scan_rsp_data_len = 0; 291 292 hdev->le_scan_type = LE_SCAN_PASSIVE; 293 294 hdev->ssp_debug_mode = 0; 295 296 hci_bdaddr_list_clear(&hdev->le_accept_list); 297 hci_bdaddr_list_clear(&hdev->le_resolv_list); 298 299 return rp->status; 300 } 301 302 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data, 303 struct sk_buff *skb) 304 { 305 struct hci_rp_read_stored_link_key *rp = data; 306 struct hci_cp_read_stored_link_key *sent; 307 308 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 309 310 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY); 311 if (!sent) 312 return rp->status; 313 314 if (!rp->status && sent->read_all == 0x01) { 315 hdev->stored_max_keys = le16_to_cpu(rp->max_keys); 316 hdev->stored_num_keys = le16_to_cpu(rp->num_keys); 317 } 318 319 return rp->status; 320 } 321 322 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data, 323 struct sk_buff *skb) 324 { 325 struct hci_rp_delete_stored_link_key *rp = data; 326 u16 num_keys; 327 328 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 329 330 if (rp->status) 331 return rp->status; 332 333 num_keys = le16_to_cpu(rp->num_keys); 334 335 if (num_keys <= hdev->stored_num_keys) 336 hdev->stored_num_keys -= num_keys; 337 else 338 hdev->stored_num_keys = 0; 339 340 return rp->status; 341 } 342 343 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data, 344 struct sk_buff *skb) 345 { 346 struct hci_ev_status *rp = data; 347 void *sent; 348 349 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 350 351 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME); 352 if (!sent) 353 return rp->status; 354 355 hci_dev_lock(hdev); 356 357 if (hci_dev_test_flag(hdev, HCI_MGMT)) 358 mgmt_set_local_name_complete(hdev, sent, rp->status); 359 else if (!rp->status) 360 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); 361 362 hci_dev_unlock(hdev); 363 364 return rp->status; 365 } 366 367 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data, 368 struct sk_buff *skb) 369 { 370 struct hci_rp_read_local_name *rp = data; 371 372 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 373 374 if (rp->status) 375 return rp->status; 376 377 if (hci_dev_test_flag(hdev, HCI_SETUP) || 378 hci_dev_test_flag(hdev, HCI_CONFIG)) 379 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH); 380 381 return rp->status; 382 } 383 384 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data, 385 struct sk_buff *skb) 386 { 387 struct hci_ev_status *rp = data; 388 void *sent; 389 390 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 391 392 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE); 393 if (!sent) 394 return rp->status; 395 396 hci_dev_lock(hdev); 397 398 if (!rp->status) { 399 __u8 param = *((__u8 *) sent); 400 401 if (param == AUTH_ENABLED) 402 set_bit(HCI_AUTH, &hdev->flags); 403 else 404 clear_bit(HCI_AUTH, &hdev->flags); 405 } 406 407 if (hci_dev_test_flag(hdev, HCI_MGMT)) 408 mgmt_auth_enable_complete(hdev, rp->status); 409 410 hci_dev_unlock(hdev); 411 412 return rp->status; 413 } 414 415 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data, 416 struct sk_buff *skb) 417 { 418 struct hci_ev_status *rp = data; 419 __u8 param; 420 void *sent; 421 422 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 423 424 if (rp->status) 425 return rp->status; 426 427 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE); 428 if (!sent) 429 return rp->status; 430 431 param = *((__u8 *) sent); 432 433 if (param) 434 set_bit(HCI_ENCRYPT, &hdev->flags); 435 else 436 clear_bit(HCI_ENCRYPT, &hdev->flags); 437 438 return rp->status; 439 } 440 441 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data, 442 struct sk_buff *skb) 443 { 444 struct hci_ev_status *rp = data; 445 __u8 param; 446 void *sent; 447 448 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 449 450 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE); 451 if (!sent) 452 return rp->status; 453 454 param = *((__u8 *) sent); 455 456 hci_dev_lock(hdev); 457 458 if (rp->status) { 459 hdev->discov_timeout = 0; 460 goto done; 461 } 462 463 if (param & SCAN_INQUIRY) 464 set_bit(HCI_ISCAN, &hdev->flags); 465 else 466 clear_bit(HCI_ISCAN, &hdev->flags); 467 468 if (param & SCAN_PAGE) 469 set_bit(HCI_PSCAN, &hdev->flags); 470 else 471 clear_bit(HCI_PSCAN, &hdev->flags); 472 473 done: 474 hci_dev_unlock(hdev); 475 476 return rp->status; 477 } 478 479 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data, 480 struct sk_buff *skb) 481 { 482 struct hci_ev_status *rp = data; 483 struct hci_cp_set_event_filter *cp; 484 void *sent; 485 486 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 487 488 if (rp->status) 489 return rp->status; 490 491 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT); 492 if (!sent) 493 return rp->status; 494 495 cp = (struct hci_cp_set_event_filter *)sent; 496 497 if (cp->flt_type == HCI_FLT_CLEAR_ALL) 498 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 499 else 500 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 501 502 return rp->status; 503 } 504 505 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data, 506 struct sk_buff *skb) 507 { 508 struct hci_rp_read_class_of_dev *rp = data; 509 510 if (WARN_ON(!hdev)) 511 return HCI_ERROR_UNSPECIFIED; 512 513 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 514 515 if (rp->status) 516 return rp->status; 517 518 memcpy(hdev->dev_class, rp->dev_class, 3); 519 520 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2], 521 hdev->dev_class[1], hdev->dev_class[0]); 522 523 return rp->status; 524 } 525 526 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data, 527 struct sk_buff *skb) 528 { 529 struct hci_ev_status *rp = data; 530 void *sent; 531 532 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 533 534 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV); 535 if (!sent) 536 return rp->status; 537 538 hci_dev_lock(hdev); 539 540 if (!rp->status) 541 memcpy(hdev->dev_class, sent, 3); 542 543 if (hci_dev_test_flag(hdev, HCI_MGMT)) 544 mgmt_set_class_of_dev_complete(hdev, sent, rp->status); 545 546 hci_dev_unlock(hdev); 547 548 return rp->status; 549 } 550 551 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data, 552 struct sk_buff *skb) 553 { 554 struct hci_rp_read_voice_setting *rp = data; 555 __u16 setting; 556 557 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 558 559 if (rp->status) 560 return rp->status; 561 562 setting = __le16_to_cpu(rp->voice_setting); 563 564 if (hdev->voice_setting == setting) 565 return rp->status; 566 567 hdev->voice_setting = setting; 568 569 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 570 571 if (hdev->notify) 572 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 573 574 return rp->status; 575 } 576 577 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data, 578 struct sk_buff *skb) 579 { 580 struct hci_ev_status *rp = data; 581 __u16 setting; 582 void *sent; 583 584 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 585 586 if (rp->status) 587 return rp->status; 588 589 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING); 590 if (!sent) 591 return rp->status; 592 593 setting = get_unaligned_le16(sent); 594 595 if (hdev->voice_setting == setting) 596 return rp->status; 597 598 hdev->voice_setting = setting; 599 600 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 601 602 if (hdev->notify) 603 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 604 605 return rp->status; 606 } 607 608 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data, 609 struct sk_buff *skb) 610 { 611 struct hci_rp_read_num_supported_iac *rp = data; 612 613 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 614 615 if (rp->status) 616 return rp->status; 617 618 hdev->num_iac = rp->num_iac; 619 620 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac); 621 622 return rp->status; 623 } 624 625 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data, 626 struct sk_buff *skb) 627 { 628 struct hci_ev_status *rp = data; 629 struct hci_cp_write_ssp_mode *sent; 630 631 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 632 633 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE); 634 if (!sent) 635 return rp->status; 636 637 hci_dev_lock(hdev); 638 639 if (!rp->status) { 640 if (sent->mode) 641 hdev->features[1][0] |= LMP_HOST_SSP; 642 else 643 hdev->features[1][0] &= ~LMP_HOST_SSP; 644 } 645 646 if (!rp->status) { 647 if (sent->mode) 648 hci_dev_set_flag(hdev, HCI_SSP_ENABLED); 649 else 650 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); 651 } 652 653 hci_dev_unlock(hdev); 654 655 return rp->status; 656 } 657 658 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data, 659 struct sk_buff *skb) 660 { 661 struct hci_ev_status *rp = data; 662 struct hci_cp_write_sc_support *sent; 663 664 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 665 666 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT); 667 if (!sent) 668 return rp->status; 669 670 hci_dev_lock(hdev); 671 672 if (!rp->status) { 673 if (sent->support) 674 hdev->features[1][0] |= LMP_HOST_SC; 675 else 676 hdev->features[1][0] &= ~LMP_HOST_SC; 677 } 678 679 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) { 680 if (sent->support) 681 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 682 else 683 hci_dev_clear_flag(hdev, HCI_SC_ENABLED); 684 } 685 686 hci_dev_unlock(hdev); 687 688 return rp->status; 689 } 690 691 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data, 692 struct sk_buff *skb) 693 { 694 struct hci_rp_read_local_version *rp = data; 695 696 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 697 698 if (rp->status) 699 return rp->status; 700 701 if (hci_dev_test_flag(hdev, HCI_SETUP) || 702 hci_dev_test_flag(hdev, HCI_CONFIG)) { 703 hdev->hci_ver = rp->hci_ver; 704 hdev->hci_rev = __le16_to_cpu(rp->hci_rev); 705 hdev->lmp_ver = rp->lmp_ver; 706 hdev->manufacturer = __le16_to_cpu(rp->manufacturer); 707 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver); 708 } 709 710 return rp->status; 711 } 712 713 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data, 714 struct sk_buff *skb) 715 { 716 struct hci_rp_read_enc_key_size *rp = data; 717 struct hci_conn *conn; 718 u16 handle; 719 u8 status = rp->status; 720 721 bt_dev_dbg(hdev, "status 0x%2.2x", status); 722 723 handle = le16_to_cpu(rp->handle); 724 725 hci_dev_lock(hdev); 726 727 conn = hci_conn_hash_lookup_handle(hdev, handle); 728 if (!conn) { 729 status = 0xFF; 730 goto done; 731 } 732 733 /* While unexpected, the read_enc_key_size command may fail. The most 734 * secure approach is to then assume the key size is 0 to force a 735 * disconnection. 736 */ 737 if (status) { 738 bt_dev_err(hdev, "failed to read key size for handle %u", 739 handle); 740 conn->enc_key_size = 0; 741 } else { 742 conn->enc_key_size = rp->key_size; 743 status = 0; 744 745 if (conn->enc_key_size < hdev->min_enc_key_size) { 746 /* As slave role, the conn->state has been set to 747 * BT_CONNECTED and l2cap conn req might not be received 748 * yet, at this moment the l2cap layer almost does 749 * nothing with the non-zero status. 750 * So we also clear encrypt related bits, and then the 751 * handler of l2cap conn req will get the right secure 752 * state at a later time. 753 */ 754 status = HCI_ERROR_AUTH_FAILURE; 755 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 756 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 757 } 758 } 759 760 hci_encrypt_cfm(conn, status); 761 762 done: 763 hci_dev_unlock(hdev); 764 765 return status; 766 } 767 768 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data, 769 struct sk_buff *skb) 770 { 771 struct hci_rp_read_local_commands *rp = data; 772 773 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 774 775 if (rp->status) 776 return rp->status; 777 778 if (hci_dev_test_flag(hdev, HCI_SETUP) || 779 hci_dev_test_flag(hdev, HCI_CONFIG)) 780 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); 781 782 return rp->status; 783 } 784 785 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data, 786 struct sk_buff *skb) 787 { 788 struct hci_rp_read_auth_payload_to *rp = data; 789 struct hci_conn *conn; 790 791 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 792 793 if (rp->status) 794 return rp->status; 795 796 hci_dev_lock(hdev); 797 798 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 799 if (conn) 800 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); 801 802 hci_dev_unlock(hdev); 803 804 return rp->status; 805 } 806 807 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data, 808 struct sk_buff *skb) 809 { 810 struct hci_rp_write_auth_payload_to *rp = data; 811 struct hci_conn *conn; 812 void *sent; 813 814 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 815 816 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); 817 if (!sent) 818 return rp->status; 819 820 hci_dev_lock(hdev); 821 822 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 823 if (!conn) { 824 rp->status = 0xff; 825 goto unlock; 826 } 827 828 if (!rp->status) 829 conn->auth_payload_timeout = get_unaligned_le16(sent + 2); 830 831 unlock: 832 hci_dev_unlock(hdev); 833 834 return rp->status; 835 } 836 837 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data, 838 struct sk_buff *skb) 839 { 840 struct hci_rp_read_local_features *rp = data; 841 842 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 843 844 if (rp->status) 845 return rp->status; 846 847 memcpy(hdev->features, rp->features, 8); 848 849 /* Adjust default settings according to features 850 * supported by device. */ 851 852 if (hdev->features[0][0] & LMP_3SLOT) 853 hdev->pkt_type |= (HCI_DM3 | HCI_DH3); 854 855 if (hdev->features[0][0] & LMP_5SLOT) 856 hdev->pkt_type |= (HCI_DM5 | HCI_DH5); 857 858 if (hdev->features[0][1] & LMP_HV2) { 859 hdev->pkt_type |= (HCI_HV2); 860 hdev->esco_type |= (ESCO_HV2); 861 } 862 863 if (hdev->features[0][1] & LMP_HV3) { 864 hdev->pkt_type |= (HCI_HV3); 865 hdev->esco_type |= (ESCO_HV3); 866 } 867 868 if (lmp_esco_capable(hdev)) 869 hdev->esco_type |= (ESCO_EV3); 870 871 if (hdev->features[0][4] & LMP_EV4) 872 hdev->esco_type |= (ESCO_EV4); 873 874 if (hdev->features[0][4] & LMP_EV5) 875 hdev->esco_type |= (ESCO_EV5); 876 877 if (hdev->features[0][5] & LMP_EDR_ESCO_2M) 878 hdev->esco_type |= (ESCO_2EV3); 879 880 if (hdev->features[0][5] & LMP_EDR_ESCO_3M) 881 hdev->esco_type |= (ESCO_3EV3); 882 883 if (hdev->features[0][5] & LMP_EDR_3S_ESCO) 884 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); 885 886 return rp->status; 887 } 888 889 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data, 890 struct sk_buff *skb) 891 { 892 struct hci_rp_read_local_ext_features *rp = data; 893 894 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 895 896 if (rp->status) 897 return rp->status; 898 899 if (hdev->max_page < rp->max_page) { 900 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, 901 &hdev->quirks)) 902 bt_dev_warn(hdev, "broken local ext features page 2"); 903 else 904 hdev->max_page = rp->max_page; 905 } 906 907 if (rp->page < HCI_MAX_PAGES) 908 memcpy(hdev->features[rp->page], rp->features, 8); 909 910 return rp->status; 911 } 912 913 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, 914 struct sk_buff *skb) 915 { 916 struct hci_rp_read_buffer_size *rp = data; 917 918 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 919 920 if (rp->status) 921 return rp->status; 922 923 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); 924 hdev->sco_mtu = rp->sco_mtu; 925 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); 926 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); 927 928 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { 929 hdev->sco_mtu = 64; 930 hdev->sco_pkts = 8; 931 } 932 933 hdev->acl_cnt = hdev->acl_pkts; 934 hdev->sco_cnt = hdev->sco_pkts; 935 936 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, 937 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); 938 939 if (!hdev->acl_mtu || !hdev->acl_pkts) 940 return HCI_ERROR_INVALID_PARAMETERS; 941 942 return rp->status; 943 } 944 945 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data, 946 struct sk_buff *skb) 947 { 948 struct hci_rp_read_bd_addr *rp = data; 949 950 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 951 952 if (rp->status) 953 return rp->status; 954 955 if (test_bit(HCI_INIT, &hdev->flags)) 956 bacpy(&hdev->bdaddr, &rp->bdaddr); 957 958 if (hci_dev_test_flag(hdev, HCI_SETUP)) 959 bacpy(&hdev->setup_addr, &rp->bdaddr); 960 961 return rp->status; 962 } 963 964 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data, 965 struct sk_buff *skb) 966 { 967 struct hci_rp_read_local_pairing_opts *rp = data; 968 969 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 970 971 if (rp->status) 972 return rp->status; 973 974 if (hci_dev_test_flag(hdev, HCI_SETUP) || 975 hci_dev_test_flag(hdev, HCI_CONFIG)) { 976 hdev->pairing_opts = rp->pairing_opts; 977 hdev->max_enc_key_size = rp->max_key_size; 978 } 979 980 return rp->status; 981 } 982 983 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data, 984 struct sk_buff *skb) 985 { 986 struct hci_rp_read_page_scan_activity *rp = data; 987 988 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 989 990 if (rp->status) 991 return rp->status; 992 993 if (test_bit(HCI_INIT, &hdev->flags)) { 994 hdev->page_scan_interval = __le16_to_cpu(rp->interval); 995 hdev->page_scan_window = __le16_to_cpu(rp->window); 996 } 997 998 return rp->status; 999 } 1000 1001 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data, 1002 struct sk_buff *skb) 1003 { 1004 struct hci_ev_status *rp = data; 1005 struct hci_cp_write_page_scan_activity *sent; 1006 1007 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1008 1009 if (rp->status) 1010 return rp->status; 1011 1012 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); 1013 if (!sent) 1014 return rp->status; 1015 1016 hdev->page_scan_interval = __le16_to_cpu(sent->interval); 1017 hdev->page_scan_window = __le16_to_cpu(sent->window); 1018 1019 return rp->status; 1020 } 1021 1022 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data, 1023 struct sk_buff *skb) 1024 { 1025 struct hci_rp_read_page_scan_type *rp = data; 1026 1027 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1028 1029 if (rp->status) 1030 return rp->status; 1031 1032 if (test_bit(HCI_INIT, &hdev->flags)) 1033 hdev->page_scan_type = rp->type; 1034 1035 return rp->status; 1036 } 1037 1038 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data, 1039 struct sk_buff *skb) 1040 { 1041 struct hci_ev_status *rp = data; 1042 u8 *type; 1043 1044 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1045 1046 if (rp->status) 1047 return rp->status; 1048 1049 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); 1050 if (type) 1051 hdev->page_scan_type = *type; 1052 1053 return rp->status; 1054 } 1055 1056 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, 1057 struct sk_buff *skb) 1058 { 1059 struct hci_rp_read_clock *rp = data; 1060 struct hci_cp_read_clock *cp; 1061 struct hci_conn *conn; 1062 1063 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1064 1065 if (rp->status) 1066 return rp->status; 1067 1068 hci_dev_lock(hdev); 1069 1070 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 1071 if (!cp) 1072 goto unlock; 1073 1074 if (cp->which == 0x00) { 1075 hdev->clock = le32_to_cpu(rp->clock); 1076 goto unlock; 1077 } 1078 1079 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1080 if (conn) { 1081 conn->clock = le32_to_cpu(rp->clock); 1082 conn->clock_accuracy = le16_to_cpu(rp->accuracy); 1083 } 1084 1085 unlock: 1086 hci_dev_unlock(hdev); 1087 return rp->status; 1088 } 1089 1090 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, 1091 struct sk_buff *skb) 1092 { 1093 struct hci_rp_read_inq_rsp_tx_power *rp = data; 1094 1095 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1096 1097 if (rp->status) 1098 return rp->status; 1099 1100 hdev->inq_tx_power = rp->tx_power; 1101 1102 return rp->status; 1103 } 1104 1105 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, 1106 struct sk_buff *skb) 1107 { 1108 struct hci_rp_read_def_err_data_reporting *rp = data; 1109 1110 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1111 1112 if (rp->status) 1113 return rp->status; 1114 1115 hdev->err_data_reporting = rp->err_data_reporting; 1116 1117 return rp->status; 1118 } 1119 1120 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, 1121 struct sk_buff *skb) 1122 { 1123 struct hci_ev_status *rp = data; 1124 struct hci_cp_write_def_err_data_reporting *cp; 1125 1126 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1127 1128 if (rp->status) 1129 return rp->status; 1130 1131 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); 1132 if (!cp) 1133 return rp->status; 1134 1135 hdev->err_data_reporting = cp->err_data_reporting; 1136 1137 return rp->status; 1138 } 1139 1140 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, 1141 struct sk_buff *skb) 1142 { 1143 struct hci_rp_pin_code_reply *rp = data; 1144 struct hci_cp_pin_code_reply *cp; 1145 struct hci_conn *conn; 1146 1147 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1148 1149 hci_dev_lock(hdev); 1150 1151 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1152 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); 1153 1154 if (rp->status) 1155 goto unlock; 1156 1157 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); 1158 if (!cp) 1159 goto unlock; 1160 1161 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 1162 if (conn) 1163 conn->pin_length = cp->pin_len; 1164 1165 unlock: 1166 hci_dev_unlock(hdev); 1167 return rp->status; 1168 } 1169 1170 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, 1171 struct sk_buff *skb) 1172 { 1173 struct hci_rp_pin_code_neg_reply *rp = data; 1174 1175 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1176 1177 hci_dev_lock(hdev); 1178 1179 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1180 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, 1181 rp->status); 1182 1183 hci_dev_unlock(hdev); 1184 1185 return rp->status; 1186 } 1187 1188 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, 1189 struct sk_buff *skb) 1190 { 1191 struct hci_rp_le_read_buffer_size *rp = data; 1192 1193 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1194 1195 if (rp->status) 1196 return rp->status; 1197 1198 hdev->le_mtu = __le16_to_cpu(rp->le_mtu); 1199 hdev->le_pkts = rp->le_max_pkt; 1200 1201 hdev->le_cnt = hdev->le_pkts; 1202 1203 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); 1204 1205 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 1206 return HCI_ERROR_INVALID_PARAMETERS; 1207 1208 return rp->status; 1209 } 1210 1211 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, 1212 struct sk_buff *skb) 1213 { 1214 struct hci_rp_le_read_local_features *rp = data; 1215 1216 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1217 1218 if (rp->status) 1219 return rp->status; 1220 1221 memcpy(hdev->le_features, rp->features, 8); 1222 1223 return rp->status; 1224 } 1225 1226 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, 1227 struct sk_buff *skb) 1228 { 1229 struct hci_rp_le_read_adv_tx_power *rp = data; 1230 1231 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1232 1233 if (rp->status) 1234 return rp->status; 1235 1236 hdev->adv_tx_power = rp->tx_power; 1237 1238 return rp->status; 1239 } 1240 1241 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, 1242 struct sk_buff *skb) 1243 { 1244 struct hci_rp_user_confirm_reply *rp = data; 1245 1246 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1247 1248 hci_dev_lock(hdev); 1249 1250 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1251 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, 1252 rp->status); 1253 1254 hci_dev_unlock(hdev); 1255 1256 return rp->status; 1257 } 1258 1259 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, 1260 struct sk_buff *skb) 1261 { 1262 struct hci_rp_user_confirm_reply *rp = data; 1263 1264 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1265 1266 hci_dev_lock(hdev); 1267 1268 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1269 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, 1270 ACL_LINK, 0, rp->status); 1271 1272 hci_dev_unlock(hdev); 1273 1274 return rp->status; 1275 } 1276 1277 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, 1278 struct sk_buff *skb) 1279 { 1280 struct hci_rp_user_confirm_reply *rp = data; 1281 1282 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1283 1284 hci_dev_lock(hdev); 1285 1286 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1287 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 1288 0, rp->status); 1289 1290 hci_dev_unlock(hdev); 1291 1292 return rp->status; 1293 } 1294 1295 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, 1296 struct sk_buff *skb) 1297 { 1298 struct hci_rp_user_confirm_reply *rp = data; 1299 1300 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1301 1302 hci_dev_lock(hdev); 1303 1304 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1305 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, 1306 ACL_LINK, 0, rp->status); 1307 1308 hci_dev_unlock(hdev); 1309 1310 return rp->status; 1311 } 1312 1313 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, 1314 struct sk_buff *skb) 1315 { 1316 struct hci_rp_read_local_oob_data *rp = data; 1317 1318 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1319 1320 return rp->status; 1321 } 1322 1323 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, 1324 struct sk_buff *skb) 1325 { 1326 struct hci_rp_read_local_oob_ext_data *rp = data; 1327 1328 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1329 1330 return rp->status; 1331 } 1332 1333 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, 1334 struct sk_buff *skb) 1335 { 1336 struct hci_ev_status *rp = data; 1337 bdaddr_t *sent; 1338 1339 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1340 1341 if (rp->status) 1342 return rp->status; 1343 1344 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); 1345 if (!sent) 1346 return rp->status; 1347 1348 hci_dev_lock(hdev); 1349 1350 bacpy(&hdev->random_addr, sent); 1351 1352 if (!bacmp(&hdev->rpa, sent)) { 1353 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 1354 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, 1355 secs_to_jiffies(hdev->rpa_timeout)); 1356 } 1357 1358 hci_dev_unlock(hdev); 1359 1360 return rp->status; 1361 } 1362 1363 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, 1364 struct sk_buff *skb) 1365 { 1366 struct hci_ev_status *rp = data; 1367 struct hci_cp_le_set_default_phy *cp; 1368 1369 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1370 1371 if (rp->status) 1372 return rp->status; 1373 1374 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); 1375 if (!cp) 1376 return rp->status; 1377 1378 hci_dev_lock(hdev); 1379 1380 hdev->le_tx_def_phys = cp->tx_phys; 1381 hdev->le_rx_def_phys = cp->rx_phys; 1382 1383 hci_dev_unlock(hdev); 1384 1385 return rp->status; 1386 } 1387 1388 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, 1389 struct sk_buff *skb) 1390 { 1391 struct hci_ev_status *rp = data; 1392 struct hci_cp_le_set_adv_set_rand_addr *cp; 1393 struct adv_info *adv; 1394 1395 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1396 1397 if (rp->status) 1398 return rp->status; 1399 1400 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); 1401 /* Update only in case the adv instance since handle 0x00 shall be using 1402 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and 1403 * non-extended adverting. 1404 */ 1405 if (!cp || !cp->handle) 1406 return rp->status; 1407 1408 hci_dev_lock(hdev); 1409 1410 adv = hci_find_adv_instance(hdev, cp->handle); 1411 if (adv) { 1412 bacpy(&adv->random_addr, &cp->bdaddr); 1413 if (!bacmp(&hdev->rpa, &cp->bdaddr)) { 1414 adv->rpa_expired = false; 1415 queue_delayed_work(hdev->workqueue, 1416 &adv->rpa_expired_cb, 1417 secs_to_jiffies(hdev->rpa_timeout)); 1418 } 1419 } 1420 1421 hci_dev_unlock(hdev); 1422 1423 return rp->status; 1424 } 1425 1426 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, 1427 struct sk_buff *skb) 1428 { 1429 struct hci_ev_status *rp = data; 1430 u8 *instance; 1431 int err; 1432 1433 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1434 1435 if (rp->status) 1436 return rp->status; 1437 1438 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); 1439 if (!instance) 1440 return rp->status; 1441 1442 hci_dev_lock(hdev); 1443 1444 err = hci_remove_adv_instance(hdev, *instance); 1445 if (!err) 1446 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, 1447 *instance); 1448 1449 hci_dev_unlock(hdev); 1450 1451 return rp->status; 1452 } 1453 1454 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, 1455 struct sk_buff *skb) 1456 { 1457 struct hci_ev_status *rp = data; 1458 struct adv_info *adv, *n; 1459 int err; 1460 1461 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1462 1463 if (rp->status) 1464 return rp->status; 1465 1466 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) 1467 return rp->status; 1468 1469 hci_dev_lock(hdev); 1470 1471 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 1472 u8 instance = adv->instance; 1473 1474 err = hci_remove_adv_instance(hdev, instance); 1475 if (!err) 1476 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), 1477 hdev, instance); 1478 } 1479 1480 hci_dev_unlock(hdev); 1481 1482 return rp->status; 1483 } 1484 1485 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, 1486 struct sk_buff *skb) 1487 { 1488 struct hci_rp_le_read_transmit_power *rp = data; 1489 1490 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1491 1492 if (rp->status) 1493 return rp->status; 1494 1495 hdev->min_le_tx_power = rp->min_le_tx_power; 1496 hdev->max_le_tx_power = rp->max_le_tx_power; 1497 1498 return rp->status; 1499 } 1500 1501 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, 1502 struct sk_buff *skb) 1503 { 1504 struct hci_ev_status *rp = data; 1505 struct hci_cp_le_set_privacy_mode *cp; 1506 struct hci_conn_params *params; 1507 1508 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1509 1510 if (rp->status) 1511 return rp->status; 1512 1513 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); 1514 if (!cp) 1515 return rp->status; 1516 1517 hci_dev_lock(hdev); 1518 1519 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); 1520 if (params) 1521 WRITE_ONCE(params->privacy_mode, cp->mode); 1522 1523 hci_dev_unlock(hdev); 1524 1525 return rp->status; 1526 } 1527 1528 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, 1529 struct sk_buff *skb) 1530 { 1531 struct hci_ev_status *rp = data; 1532 __u8 *sent; 1533 1534 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1535 1536 if (rp->status) 1537 return rp->status; 1538 1539 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); 1540 if (!sent) 1541 return rp->status; 1542 1543 hci_dev_lock(hdev); 1544 1545 /* If we're doing connection initiation as peripheral. Set a 1546 * timeout in case something goes wrong. 1547 */ 1548 if (*sent) { 1549 struct hci_conn *conn; 1550 1551 hci_dev_set_flag(hdev, HCI_LE_ADV); 1552 1553 conn = hci_lookup_le_connect(hdev); 1554 if (conn) 1555 queue_delayed_work(hdev->workqueue, 1556 &conn->le_conn_timeout, 1557 conn->conn_timeout); 1558 } else { 1559 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1560 } 1561 1562 hci_dev_unlock(hdev); 1563 1564 return rp->status; 1565 } 1566 1567 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, 1568 struct sk_buff *skb) 1569 { 1570 struct hci_cp_le_set_ext_adv_enable *cp; 1571 struct hci_cp_ext_adv_set *set; 1572 struct adv_info *adv = NULL, *n; 1573 struct hci_ev_status *rp = data; 1574 1575 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1576 1577 if (rp->status) 1578 return rp->status; 1579 1580 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); 1581 if (!cp) 1582 return rp->status; 1583 1584 set = (void *)cp->data; 1585 1586 hci_dev_lock(hdev); 1587 1588 if (cp->num_of_sets) 1589 adv = hci_find_adv_instance(hdev, set->handle); 1590 1591 if (cp->enable) { 1592 struct hci_conn *conn; 1593 1594 hci_dev_set_flag(hdev, HCI_LE_ADV); 1595 1596 if (adv && !adv->periodic) 1597 adv->enabled = true; 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 if (cp->num_of_sets) { 1606 if (adv) 1607 adv->enabled = false; 1608 1609 /* If just one instance was disabled check if there are 1610 * any other instance enabled before clearing HCI_LE_ADV 1611 */ 1612 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1613 list) { 1614 if (adv->enabled) 1615 goto unlock; 1616 } 1617 } else { 1618 /* All instances shall be considered disabled */ 1619 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1620 list) 1621 adv->enabled = false; 1622 } 1623 1624 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1625 } 1626 1627 unlock: 1628 hci_dev_unlock(hdev); 1629 return rp->status; 1630 } 1631 1632 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, 1633 struct sk_buff *skb) 1634 { 1635 struct hci_cp_le_set_scan_param *cp; 1636 struct hci_ev_status *rp = data; 1637 1638 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1639 1640 if (rp->status) 1641 return rp->status; 1642 1643 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); 1644 if (!cp) 1645 return rp->status; 1646 1647 hci_dev_lock(hdev); 1648 1649 hdev->le_scan_type = cp->type; 1650 1651 hci_dev_unlock(hdev); 1652 1653 return rp->status; 1654 } 1655 1656 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, 1657 struct sk_buff *skb) 1658 { 1659 struct hci_cp_le_set_ext_scan_params *cp; 1660 struct hci_ev_status *rp = data; 1661 struct hci_cp_le_scan_phy_params *phy_param; 1662 1663 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1664 1665 if (rp->status) 1666 return rp->status; 1667 1668 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); 1669 if (!cp) 1670 return rp->status; 1671 1672 phy_param = (void *)cp->data; 1673 1674 hci_dev_lock(hdev); 1675 1676 hdev->le_scan_type = phy_param->type; 1677 1678 hci_dev_unlock(hdev); 1679 1680 return rp->status; 1681 } 1682 1683 static bool has_pending_adv_report(struct hci_dev *hdev) 1684 { 1685 struct discovery_state *d = &hdev->discovery; 1686 1687 return bacmp(&d->last_adv_addr, BDADDR_ANY); 1688 } 1689 1690 static void clear_pending_adv_report(struct hci_dev *hdev) 1691 { 1692 struct discovery_state *d = &hdev->discovery; 1693 1694 bacpy(&d->last_adv_addr, BDADDR_ANY); 1695 d->last_adv_data_len = 0; 1696 } 1697 1698 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, 1699 u8 bdaddr_type, s8 rssi, u32 flags, 1700 u8 *data, u8 len) 1701 { 1702 struct discovery_state *d = &hdev->discovery; 1703 1704 if (len > max_adv_len(hdev)) 1705 return; 1706 1707 bacpy(&d->last_adv_addr, bdaddr); 1708 d->last_adv_addr_type = bdaddr_type; 1709 d->last_adv_rssi = rssi; 1710 d->last_adv_flags = flags; 1711 memcpy(d->last_adv_data, data, len); 1712 d->last_adv_data_len = len; 1713 } 1714 1715 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) 1716 { 1717 hci_dev_lock(hdev); 1718 1719 switch (enable) { 1720 case LE_SCAN_ENABLE: 1721 hci_dev_set_flag(hdev, HCI_LE_SCAN); 1722 if (hdev->le_scan_type == LE_SCAN_ACTIVE) { 1723 clear_pending_adv_report(hdev); 1724 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 1725 } 1726 break; 1727 1728 case LE_SCAN_DISABLE: 1729 /* We do this here instead of when setting DISCOVERY_STOPPED 1730 * since the latter would potentially require waiting for 1731 * inquiry to stop too. 1732 */ 1733 if (has_pending_adv_report(hdev)) { 1734 struct discovery_state *d = &hdev->discovery; 1735 1736 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 1737 d->last_adv_addr_type, NULL, 1738 d->last_adv_rssi, d->last_adv_flags, 1739 d->last_adv_data, 1740 d->last_adv_data_len, NULL, 0, 0); 1741 } 1742 1743 /* Cancel this timer so that we don't try to disable scanning 1744 * when it's already disabled. 1745 */ 1746 cancel_delayed_work(&hdev->le_scan_disable); 1747 1748 hci_dev_clear_flag(hdev, HCI_LE_SCAN); 1749 1750 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we 1751 * interrupted scanning due to a connect request. Mark 1752 * therefore discovery as stopped. 1753 */ 1754 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) 1755 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 1756 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && 1757 hdev->discovery.state == DISCOVERY_FINDING) 1758 queue_work(hdev->workqueue, &hdev->reenable_adv_work); 1759 1760 break; 1761 1762 default: 1763 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", 1764 enable); 1765 break; 1766 } 1767 1768 hci_dev_unlock(hdev); 1769 } 1770 1771 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, 1772 struct sk_buff *skb) 1773 { 1774 struct hci_cp_le_set_scan_enable *cp; 1775 struct hci_ev_status *rp = data; 1776 1777 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1778 1779 if (rp->status) 1780 return rp->status; 1781 1782 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); 1783 if (!cp) 1784 return rp->status; 1785 1786 le_set_scan_enable_complete(hdev, cp->enable); 1787 1788 return rp->status; 1789 } 1790 1791 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, 1792 struct sk_buff *skb) 1793 { 1794 struct hci_cp_le_set_ext_scan_enable *cp; 1795 struct hci_ev_status *rp = data; 1796 1797 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1798 1799 if (rp->status) 1800 return rp->status; 1801 1802 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); 1803 if (!cp) 1804 return rp->status; 1805 1806 le_set_scan_enable_complete(hdev, cp->enable); 1807 1808 return rp->status; 1809 } 1810 1811 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, 1812 struct sk_buff *skb) 1813 { 1814 struct hci_rp_le_read_num_supported_adv_sets *rp = data; 1815 1816 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, 1817 rp->num_of_sets); 1818 1819 if (rp->status) 1820 return rp->status; 1821 1822 hdev->le_num_of_adv_sets = rp->num_of_sets; 1823 1824 return rp->status; 1825 } 1826 1827 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, 1828 struct sk_buff *skb) 1829 { 1830 struct hci_rp_le_read_accept_list_size *rp = data; 1831 1832 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 1833 1834 if (rp->status) 1835 return rp->status; 1836 1837 hdev->le_accept_list_size = rp->size; 1838 1839 return rp->status; 1840 } 1841 1842 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, 1843 struct sk_buff *skb) 1844 { 1845 struct hci_ev_status *rp = data; 1846 1847 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1848 1849 if (rp->status) 1850 return rp->status; 1851 1852 hci_dev_lock(hdev); 1853 hci_bdaddr_list_clear(&hdev->le_accept_list); 1854 hci_dev_unlock(hdev); 1855 1856 return rp->status; 1857 } 1858 1859 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, 1860 struct sk_buff *skb) 1861 { 1862 struct hci_cp_le_add_to_accept_list *sent; 1863 struct hci_ev_status *rp = data; 1864 1865 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1866 1867 if (rp->status) 1868 return rp->status; 1869 1870 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); 1871 if (!sent) 1872 return rp->status; 1873 1874 hci_dev_lock(hdev); 1875 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, 1876 sent->bdaddr_type); 1877 hci_dev_unlock(hdev); 1878 1879 return rp->status; 1880 } 1881 1882 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, 1883 struct sk_buff *skb) 1884 { 1885 struct hci_cp_le_del_from_accept_list *sent; 1886 struct hci_ev_status *rp = data; 1887 1888 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1889 1890 if (rp->status) 1891 return rp->status; 1892 1893 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); 1894 if (!sent) 1895 return rp->status; 1896 1897 hci_dev_lock(hdev); 1898 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, 1899 sent->bdaddr_type); 1900 hci_dev_unlock(hdev); 1901 1902 return rp->status; 1903 } 1904 1905 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, 1906 struct sk_buff *skb) 1907 { 1908 struct hci_rp_le_read_supported_states *rp = data; 1909 1910 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1911 1912 if (rp->status) 1913 return rp->status; 1914 1915 memcpy(hdev->le_states, rp->le_states, 8); 1916 1917 return rp->status; 1918 } 1919 1920 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, 1921 struct sk_buff *skb) 1922 { 1923 struct hci_rp_le_read_def_data_len *rp = data; 1924 1925 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1926 1927 if (rp->status) 1928 return rp->status; 1929 1930 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); 1931 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); 1932 1933 return rp->status; 1934 } 1935 1936 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, 1937 struct sk_buff *skb) 1938 { 1939 struct hci_cp_le_write_def_data_len *sent; 1940 struct hci_ev_status *rp = data; 1941 1942 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1943 1944 if (rp->status) 1945 return rp->status; 1946 1947 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); 1948 if (!sent) 1949 return rp->status; 1950 1951 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); 1952 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); 1953 1954 return rp->status; 1955 } 1956 1957 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, 1958 struct sk_buff *skb) 1959 { 1960 struct hci_cp_le_add_to_resolv_list *sent; 1961 struct hci_ev_status *rp = data; 1962 1963 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1964 1965 if (rp->status) 1966 return rp->status; 1967 1968 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); 1969 if (!sent) 1970 return rp->status; 1971 1972 hci_dev_lock(hdev); 1973 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 1974 sent->bdaddr_type, sent->peer_irk, 1975 sent->local_irk); 1976 hci_dev_unlock(hdev); 1977 1978 return rp->status; 1979 } 1980 1981 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, 1982 struct sk_buff *skb) 1983 { 1984 struct hci_cp_le_del_from_resolv_list *sent; 1985 struct hci_ev_status *rp = data; 1986 1987 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1988 1989 if (rp->status) 1990 return rp->status; 1991 1992 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); 1993 if (!sent) 1994 return rp->status; 1995 1996 hci_dev_lock(hdev); 1997 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 1998 sent->bdaddr_type); 1999 hci_dev_unlock(hdev); 2000 2001 return rp->status; 2002 } 2003 2004 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, 2005 struct sk_buff *skb) 2006 { 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 hci_dev_lock(hdev); 2015 hci_bdaddr_list_clear(&hdev->le_resolv_list); 2016 hci_dev_unlock(hdev); 2017 2018 return rp->status; 2019 } 2020 2021 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, 2022 struct sk_buff *skb) 2023 { 2024 struct hci_rp_le_read_resolv_list_size *rp = data; 2025 2026 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 2027 2028 if (rp->status) 2029 return rp->status; 2030 2031 hdev->le_resolv_list_size = rp->size; 2032 2033 return rp->status; 2034 } 2035 2036 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, 2037 struct sk_buff *skb) 2038 { 2039 struct hci_ev_status *rp = data; 2040 __u8 *sent; 2041 2042 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2043 2044 if (rp->status) 2045 return rp->status; 2046 2047 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); 2048 if (!sent) 2049 return rp->status; 2050 2051 hci_dev_lock(hdev); 2052 2053 if (*sent) 2054 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); 2055 else 2056 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); 2057 2058 hci_dev_unlock(hdev); 2059 2060 return rp->status; 2061 } 2062 2063 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, 2064 struct sk_buff *skb) 2065 { 2066 struct hci_rp_le_read_max_data_len *rp = data; 2067 2068 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2069 2070 if (rp->status) 2071 return rp->status; 2072 2073 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); 2074 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); 2075 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); 2076 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); 2077 2078 return rp->status; 2079 } 2080 2081 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, 2082 struct sk_buff *skb) 2083 { 2084 struct hci_cp_write_le_host_supported *sent; 2085 struct hci_ev_status *rp = data; 2086 2087 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2088 2089 if (rp->status) 2090 return rp->status; 2091 2092 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); 2093 if (!sent) 2094 return rp->status; 2095 2096 hci_dev_lock(hdev); 2097 2098 if (sent->le) { 2099 hdev->features[1][0] |= LMP_HOST_LE; 2100 hci_dev_set_flag(hdev, HCI_LE_ENABLED); 2101 } else { 2102 hdev->features[1][0] &= ~LMP_HOST_LE; 2103 hci_dev_clear_flag(hdev, HCI_LE_ENABLED); 2104 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 2105 } 2106 2107 if (sent->simul) 2108 hdev->features[1][0] |= LMP_HOST_LE_BREDR; 2109 else 2110 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; 2111 2112 hci_dev_unlock(hdev); 2113 2114 return rp->status; 2115 } 2116 2117 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, 2118 struct sk_buff *skb) 2119 { 2120 struct hci_cp_le_set_adv_param *cp; 2121 struct hci_ev_status *rp = data; 2122 2123 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2124 2125 if (rp->status) 2126 return rp->status; 2127 2128 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); 2129 if (!cp) 2130 return rp->status; 2131 2132 hci_dev_lock(hdev); 2133 hdev->adv_addr_type = cp->own_address_type; 2134 hci_dev_unlock(hdev); 2135 2136 return rp->status; 2137 } 2138 2139 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data, 2140 struct sk_buff *skb) 2141 { 2142 struct hci_rp_le_set_ext_adv_params *rp = data; 2143 struct hci_cp_le_set_ext_adv_params *cp; 2144 struct adv_info *adv_instance; 2145 2146 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2147 2148 if (rp->status) 2149 return rp->status; 2150 2151 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); 2152 if (!cp) 2153 return rp->status; 2154 2155 hci_dev_lock(hdev); 2156 hdev->adv_addr_type = cp->own_addr_type; 2157 if (!cp->handle) { 2158 /* Store in hdev for instance 0 */ 2159 hdev->adv_tx_power = rp->tx_power; 2160 } else { 2161 adv_instance = hci_find_adv_instance(hdev, cp->handle); 2162 if (adv_instance) 2163 adv_instance->tx_power = rp->tx_power; 2164 } 2165 /* Update adv data as tx power is known now */ 2166 hci_update_adv_data(hdev, cp->handle); 2167 2168 hci_dev_unlock(hdev); 2169 2170 return rp->status; 2171 } 2172 2173 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, 2174 struct sk_buff *skb) 2175 { 2176 struct hci_rp_read_rssi *rp = data; 2177 struct hci_conn *conn; 2178 2179 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2180 2181 if (rp->status) 2182 return rp->status; 2183 2184 hci_dev_lock(hdev); 2185 2186 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2187 if (conn) 2188 conn->rssi = rp->rssi; 2189 2190 hci_dev_unlock(hdev); 2191 2192 return rp->status; 2193 } 2194 2195 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, 2196 struct sk_buff *skb) 2197 { 2198 struct hci_cp_read_tx_power *sent; 2199 struct hci_rp_read_tx_power *rp = data; 2200 struct hci_conn *conn; 2201 2202 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2203 2204 if (rp->status) 2205 return rp->status; 2206 2207 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 2208 if (!sent) 2209 return rp->status; 2210 2211 hci_dev_lock(hdev); 2212 2213 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2214 if (!conn) 2215 goto unlock; 2216 2217 switch (sent->type) { 2218 case 0x00: 2219 conn->tx_power = rp->tx_power; 2220 break; 2221 case 0x01: 2222 conn->max_tx_power = rp->tx_power; 2223 break; 2224 } 2225 2226 unlock: 2227 hci_dev_unlock(hdev); 2228 return rp->status; 2229 } 2230 2231 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, 2232 struct sk_buff *skb) 2233 { 2234 struct hci_ev_status *rp = data; 2235 u8 *mode; 2236 2237 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2238 2239 if (rp->status) 2240 return rp->status; 2241 2242 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 2243 if (mode) 2244 hdev->ssp_debug_mode = *mode; 2245 2246 return rp->status; 2247 } 2248 2249 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 2250 { 2251 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2252 2253 if (status) 2254 return; 2255 2256 if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY)) 2257 set_bit(HCI_INQUIRY, &hdev->flags); 2258 } 2259 2260 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 2261 { 2262 struct hci_cp_create_conn *cp; 2263 struct hci_conn *conn; 2264 2265 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2266 2267 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 2268 if (!cp) 2269 return; 2270 2271 hci_dev_lock(hdev); 2272 2273 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2274 2275 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); 2276 2277 if (status) { 2278 if (conn && conn->state == BT_CONNECT) { 2279 conn->state = BT_CLOSED; 2280 hci_connect_cfm(conn, status); 2281 hci_conn_del(conn); 2282 } 2283 } else { 2284 if (!conn) { 2285 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr, 2286 HCI_ROLE_MASTER); 2287 if (IS_ERR(conn)) 2288 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 2289 } 2290 } 2291 2292 hci_dev_unlock(hdev); 2293 } 2294 2295 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 2296 { 2297 struct hci_cp_add_sco *cp; 2298 struct hci_conn *acl; 2299 struct hci_link *link; 2300 __u16 handle; 2301 2302 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2303 2304 if (!status) 2305 return; 2306 2307 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 2308 if (!cp) 2309 return; 2310 2311 handle = __le16_to_cpu(cp->handle); 2312 2313 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2314 2315 hci_dev_lock(hdev); 2316 2317 acl = hci_conn_hash_lookup_handle(hdev, handle); 2318 if (acl) { 2319 link = list_first_entry_or_null(&acl->link_list, 2320 struct hci_link, list); 2321 if (link && link->conn) { 2322 link->conn->state = BT_CLOSED; 2323 2324 hci_connect_cfm(link->conn, status); 2325 hci_conn_del(link->conn); 2326 } 2327 } 2328 2329 hci_dev_unlock(hdev); 2330 } 2331 2332 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 2333 { 2334 struct hci_cp_auth_requested *cp; 2335 struct hci_conn *conn; 2336 2337 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2338 2339 if (!status) 2340 return; 2341 2342 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 2343 if (!cp) 2344 return; 2345 2346 hci_dev_lock(hdev); 2347 2348 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2349 if (conn) { 2350 if (conn->state == BT_CONFIG) { 2351 hci_connect_cfm(conn, status); 2352 hci_conn_drop(conn); 2353 } 2354 } 2355 2356 hci_dev_unlock(hdev); 2357 } 2358 2359 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 2360 { 2361 struct hci_cp_set_conn_encrypt *cp; 2362 struct hci_conn *conn; 2363 2364 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2365 2366 if (!status) 2367 return; 2368 2369 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 2370 if (!cp) 2371 return; 2372 2373 hci_dev_lock(hdev); 2374 2375 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2376 if (conn) { 2377 if (conn->state == BT_CONFIG) { 2378 hci_connect_cfm(conn, status); 2379 hci_conn_drop(conn); 2380 } 2381 } 2382 2383 hci_dev_unlock(hdev); 2384 } 2385 2386 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 2387 struct hci_conn *conn) 2388 { 2389 if (conn->state != BT_CONFIG || !conn->out) 2390 return 0; 2391 2392 if (conn->pending_sec_level == BT_SECURITY_SDP) 2393 return 0; 2394 2395 /* Only request authentication for SSP connections or non-SSP 2396 * devices with sec_level MEDIUM or HIGH or if MITM protection 2397 * is requested. 2398 */ 2399 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 2400 conn->pending_sec_level != BT_SECURITY_FIPS && 2401 conn->pending_sec_level != BT_SECURITY_HIGH && 2402 conn->pending_sec_level != BT_SECURITY_MEDIUM) 2403 return 0; 2404 2405 return 1; 2406 } 2407 2408 static int hci_resolve_name(struct hci_dev *hdev, 2409 struct inquiry_entry *e) 2410 { 2411 struct hci_cp_remote_name_req cp; 2412 2413 memset(&cp, 0, sizeof(cp)); 2414 2415 bacpy(&cp.bdaddr, &e->data.bdaddr); 2416 cp.pscan_rep_mode = e->data.pscan_rep_mode; 2417 cp.pscan_mode = e->data.pscan_mode; 2418 cp.clock_offset = e->data.clock_offset; 2419 2420 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 2421 } 2422 2423 static bool hci_resolve_next_name(struct hci_dev *hdev) 2424 { 2425 struct discovery_state *discov = &hdev->discovery; 2426 struct inquiry_entry *e; 2427 2428 if (list_empty(&discov->resolve)) 2429 return false; 2430 2431 /* We should stop if we already spent too much time resolving names. */ 2432 if (time_after(jiffies, discov->name_resolve_timeout)) { 2433 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); 2434 return false; 2435 } 2436 2437 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2438 if (!e) 2439 return false; 2440 2441 if (hci_resolve_name(hdev, e) == 0) { 2442 e->name_state = NAME_PENDING; 2443 return true; 2444 } 2445 2446 return false; 2447 } 2448 2449 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2450 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2451 { 2452 struct discovery_state *discov = &hdev->discovery; 2453 struct inquiry_entry *e; 2454 2455 /* Update the mgmt connected state if necessary. Be careful with 2456 * conn objects that exist but are not (yet) connected however. 2457 * Only those in BT_CONFIG or BT_CONNECTED states can be 2458 * considered connected. 2459 */ 2460 if (conn && (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) 2461 mgmt_device_connected(hdev, conn, name, name_len); 2462 2463 if (discov->state == DISCOVERY_STOPPED) 2464 return; 2465 2466 if (discov->state == DISCOVERY_STOPPING) 2467 goto discov_complete; 2468 2469 if (discov->state != DISCOVERY_RESOLVING) 2470 return; 2471 2472 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2473 /* If the device was not found in a list of found devices names of which 2474 * are pending. there is no need to continue resolving a next name as it 2475 * will be done upon receiving another Remote Name Request Complete 2476 * Event */ 2477 if (!e) 2478 return; 2479 2480 list_del(&e->list); 2481 2482 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; 2483 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, 2484 name, name_len); 2485 2486 if (hci_resolve_next_name(hdev)) 2487 return; 2488 2489 discov_complete: 2490 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2491 } 2492 2493 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2494 { 2495 struct hci_cp_remote_name_req *cp; 2496 struct hci_conn *conn; 2497 2498 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2499 2500 /* If successful wait for the name req complete event before 2501 * checking for the need to do authentication */ 2502 if (!status) 2503 return; 2504 2505 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2506 if (!cp) 2507 return; 2508 2509 hci_dev_lock(hdev); 2510 2511 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2512 2513 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2514 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2515 2516 if (!conn) 2517 goto unlock; 2518 2519 if (!hci_outgoing_auth_needed(hdev, conn)) 2520 goto unlock; 2521 2522 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2523 struct hci_cp_auth_requested auth_cp; 2524 2525 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2526 2527 auth_cp.handle = __cpu_to_le16(conn->handle); 2528 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2529 sizeof(auth_cp), &auth_cp); 2530 } 2531 2532 unlock: 2533 hci_dev_unlock(hdev); 2534 } 2535 2536 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2537 { 2538 struct hci_cp_read_remote_features *cp; 2539 struct hci_conn *conn; 2540 2541 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2542 2543 if (!status) 2544 return; 2545 2546 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2547 if (!cp) 2548 return; 2549 2550 hci_dev_lock(hdev); 2551 2552 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2553 if (conn) { 2554 if (conn->state == BT_CONFIG) { 2555 hci_connect_cfm(conn, status); 2556 hci_conn_drop(conn); 2557 } 2558 } 2559 2560 hci_dev_unlock(hdev); 2561 } 2562 2563 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2564 { 2565 struct hci_cp_read_remote_ext_features *cp; 2566 struct hci_conn *conn; 2567 2568 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2569 2570 if (!status) 2571 return; 2572 2573 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2574 if (!cp) 2575 return; 2576 2577 hci_dev_lock(hdev); 2578 2579 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2580 if (conn) { 2581 if (conn->state == BT_CONFIG) { 2582 hci_connect_cfm(conn, status); 2583 hci_conn_drop(conn); 2584 } 2585 } 2586 2587 hci_dev_unlock(hdev); 2588 } 2589 2590 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, 2591 __u8 status) 2592 { 2593 struct hci_conn *acl; 2594 struct hci_link *link; 2595 2596 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); 2597 2598 hci_dev_lock(hdev); 2599 2600 acl = hci_conn_hash_lookup_handle(hdev, handle); 2601 if (acl) { 2602 link = list_first_entry_or_null(&acl->link_list, 2603 struct hci_link, list); 2604 if (link && link->conn) { 2605 link->conn->state = BT_CLOSED; 2606 2607 hci_connect_cfm(link->conn, status); 2608 hci_conn_del(link->conn); 2609 } 2610 } 2611 2612 hci_dev_unlock(hdev); 2613 } 2614 2615 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2616 { 2617 struct hci_cp_setup_sync_conn *cp; 2618 2619 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2620 2621 if (!status) 2622 return; 2623 2624 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2625 if (!cp) 2626 return; 2627 2628 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2629 } 2630 2631 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2632 { 2633 struct hci_cp_enhanced_setup_sync_conn *cp; 2634 2635 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2636 2637 if (!status) 2638 return; 2639 2640 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); 2641 if (!cp) 2642 return; 2643 2644 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2645 } 2646 2647 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2648 { 2649 struct hci_cp_sniff_mode *cp; 2650 struct hci_conn *conn; 2651 2652 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2653 2654 if (!status) 2655 return; 2656 2657 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2658 if (!cp) 2659 return; 2660 2661 hci_dev_lock(hdev); 2662 2663 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2664 if (conn) { 2665 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2666 2667 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2668 hci_sco_setup(conn, status); 2669 } 2670 2671 hci_dev_unlock(hdev); 2672 } 2673 2674 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2675 { 2676 struct hci_cp_exit_sniff_mode *cp; 2677 struct hci_conn *conn; 2678 2679 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2680 2681 if (!status) 2682 return; 2683 2684 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2685 if (!cp) 2686 return; 2687 2688 hci_dev_lock(hdev); 2689 2690 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2691 if (conn) { 2692 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2693 2694 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2695 hci_sco_setup(conn, status); 2696 } 2697 2698 hci_dev_unlock(hdev); 2699 } 2700 2701 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2702 { 2703 struct hci_cp_disconnect *cp; 2704 struct hci_conn_params *params; 2705 struct hci_conn *conn; 2706 bool mgmt_conn; 2707 2708 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2709 2710 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended 2711 * otherwise cleanup the connection immediately. 2712 */ 2713 if (!status && !hdev->suspended) 2714 return; 2715 2716 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2717 if (!cp) 2718 return; 2719 2720 hci_dev_lock(hdev); 2721 2722 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2723 if (!conn) 2724 goto unlock; 2725 2726 if (status) { 2727 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2728 conn->dst_type, status); 2729 2730 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 2731 hdev->cur_adv_instance = conn->adv_instance; 2732 hci_enable_advertising(hdev); 2733 } 2734 2735 /* Inform sockets conn is gone before we delete it */ 2736 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED); 2737 2738 goto done; 2739 } 2740 2741 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2742 2743 if (conn->type == ACL_LINK) { 2744 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2745 hci_remove_link_key(hdev, &conn->dst); 2746 } 2747 2748 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2749 if (params) { 2750 switch (params->auto_connect) { 2751 case HCI_AUTO_CONN_LINK_LOSS: 2752 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2753 break; 2754 fallthrough; 2755 2756 case HCI_AUTO_CONN_DIRECT: 2757 case HCI_AUTO_CONN_ALWAYS: 2758 hci_pend_le_list_del_init(params); 2759 hci_pend_le_list_add(params, &hdev->pend_le_conns); 2760 break; 2761 2762 default: 2763 break; 2764 } 2765 } 2766 2767 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2768 cp->reason, mgmt_conn); 2769 2770 hci_disconn_cfm(conn, cp->reason); 2771 2772 done: 2773 /* If the disconnection failed for any reason, the upper layer 2774 * does not retry to disconnect in current implementation. 2775 * Hence, we need to do some basic cleanup here and re-enable 2776 * advertising if necessary. 2777 */ 2778 hci_conn_del(conn); 2779 unlock: 2780 hci_dev_unlock(hdev); 2781 } 2782 2783 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2784 { 2785 /* When using controller based address resolution, then the new 2786 * address types 0x02 and 0x03 are used. These types need to be 2787 * converted back into either public address or random address type 2788 */ 2789 switch (type) { 2790 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2791 if (resolved) 2792 *resolved = true; 2793 return ADDR_LE_DEV_PUBLIC; 2794 case ADDR_LE_DEV_RANDOM_RESOLVED: 2795 if (resolved) 2796 *resolved = true; 2797 return ADDR_LE_DEV_RANDOM; 2798 } 2799 2800 if (resolved) 2801 *resolved = false; 2802 return type; 2803 } 2804 2805 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2806 u8 peer_addr_type, u8 own_address_type, 2807 u8 filter_policy) 2808 { 2809 struct hci_conn *conn; 2810 2811 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2812 peer_addr_type); 2813 if (!conn) 2814 return; 2815 2816 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2817 2818 /* Store the initiator and responder address information which 2819 * is needed for SMP. These values will not change during the 2820 * lifetime of the connection. 2821 */ 2822 conn->init_addr_type = own_address_type; 2823 if (own_address_type == ADDR_LE_DEV_RANDOM) 2824 bacpy(&conn->init_addr, &hdev->random_addr); 2825 else 2826 bacpy(&conn->init_addr, &hdev->bdaddr); 2827 2828 conn->resp_addr_type = peer_addr_type; 2829 bacpy(&conn->resp_addr, peer_addr); 2830 } 2831 2832 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2833 { 2834 struct hci_cp_le_create_conn *cp; 2835 2836 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2837 2838 /* All connection failure handling is taken care of by the 2839 * hci_conn_failed function which is triggered by the HCI 2840 * request completion callbacks used for connecting. 2841 */ 2842 if (status) 2843 return; 2844 2845 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2846 if (!cp) 2847 return; 2848 2849 hci_dev_lock(hdev); 2850 2851 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2852 cp->own_address_type, cp->filter_policy); 2853 2854 hci_dev_unlock(hdev); 2855 } 2856 2857 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2858 { 2859 struct hci_cp_le_ext_create_conn *cp; 2860 2861 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2862 2863 /* All connection failure handling is taken care of by the 2864 * hci_conn_failed function which is triggered by the HCI 2865 * request completion callbacks used for connecting. 2866 */ 2867 if (status) 2868 return; 2869 2870 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2871 if (!cp) 2872 return; 2873 2874 hci_dev_lock(hdev); 2875 2876 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2877 cp->own_addr_type, cp->filter_policy); 2878 2879 hci_dev_unlock(hdev); 2880 } 2881 2882 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2883 { 2884 struct hci_cp_le_read_remote_features *cp; 2885 struct hci_conn *conn; 2886 2887 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2888 2889 if (!status) 2890 return; 2891 2892 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2893 if (!cp) 2894 return; 2895 2896 hci_dev_lock(hdev); 2897 2898 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2899 if (conn) { 2900 if (conn->state == BT_CONFIG) { 2901 hci_connect_cfm(conn, status); 2902 hci_conn_drop(conn); 2903 } 2904 } 2905 2906 hci_dev_unlock(hdev); 2907 } 2908 2909 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2910 { 2911 struct hci_cp_le_start_enc *cp; 2912 struct hci_conn *conn; 2913 2914 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2915 2916 if (!status) 2917 return; 2918 2919 hci_dev_lock(hdev); 2920 2921 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2922 if (!cp) 2923 goto unlock; 2924 2925 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2926 if (!conn) 2927 goto unlock; 2928 2929 if (conn->state != BT_CONNECTED) 2930 goto unlock; 2931 2932 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2933 hci_conn_drop(conn); 2934 2935 unlock: 2936 hci_dev_unlock(hdev); 2937 } 2938 2939 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2940 { 2941 struct hci_cp_switch_role *cp; 2942 struct hci_conn *conn; 2943 2944 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2945 2946 if (!status) 2947 return; 2948 2949 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 2950 if (!cp) 2951 return; 2952 2953 hci_dev_lock(hdev); 2954 2955 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2956 if (conn) 2957 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 2958 2959 hci_dev_unlock(hdev); 2960 } 2961 2962 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 2963 struct sk_buff *skb) 2964 { 2965 struct hci_ev_status *ev = data; 2966 struct discovery_state *discov = &hdev->discovery; 2967 struct inquiry_entry *e; 2968 2969 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 2970 2971 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 2972 return; 2973 2974 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 2975 wake_up_bit(&hdev->flags, HCI_INQUIRY); 2976 2977 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 2978 return; 2979 2980 hci_dev_lock(hdev); 2981 2982 if (discov->state != DISCOVERY_FINDING) 2983 goto unlock; 2984 2985 if (list_empty(&discov->resolve)) { 2986 /* When BR/EDR inquiry is active and no LE scanning is in 2987 * progress, then change discovery state to indicate completion. 2988 * 2989 * When running LE scanning and BR/EDR inquiry simultaneously 2990 * and the LE scan already finished, then change the discovery 2991 * state to indicate completion. 2992 */ 2993 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 2994 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 2995 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2996 goto unlock; 2997 } 2998 2999 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 3000 if (e && hci_resolve_name(hdev, e) == 0) { 3001 e->name_state = NAME_PENDING; 3002 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 3003 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 3004 } else { 3005 /* When BR/EDR inquiry is active and no LE scanning is in 3006 * progress, then change discovery state to indicate completion. 3007 * 3008 * When running LE scanning and BR/EDR inquiry simultaneously 3009 * and the LE scan already finished, then change the discovery 3010 * state to indicate completion. 3011 */ 3012 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3013 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3014 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3015 } 3016 3017 unlock: 3018 hci_dev_unlock(hdev); 3019 } 3020 3021 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3022 struct sk_buff *skb) 3023 { 3024 struct hci_ev_inquiry_result *ev = edata; 3025 struct inquiry_data data; 3026 int i; 3027 3028 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3029 flex_array_size(ev, info, ev->num))) 3030 return; 3031 3032 bt_dev_dbg(hdev, "num %d", ev->num); 3033 3034 if (!ev->num) 3035 return; 3036 3037 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3038 return; 3039 3040 hci_dev_lock(hdev); 3041 3042 for (i = 0; i < ev->num; i++) { 3043 struct inquiry_info *info = &ev->info[i]; 3044 u32 flags; 3045 3046 bacpy(&data.bdaddr, &info->bdaddr); 3047 data.pscan_rep_mode = info->pscan_rep_mode; 3048 data.pscan_period_mode = info->pscan_period_mode; 3049 data.pscan_mode = info->pscan_mode; 3050 memcpy(data.dev_class, info->dev_class, 3); 3051 data.clock_offset = info->clock_offset; 3052 data.rssi = HCI_RSSI_INVALID; 3053 data.ssp_mode = 0x00; 3054 3055 flags = hci_inquiry_cache_update(hdev, &data, false); 3056 3057 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3058 info->dev_class, HCI_RSSI_INVALID, 3059 flags, NULL, 0, NULL, 0, 0); 3060 } 3061 3062 hci_dev_unlock(hdev); 3063 } 3064 3065 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3066 struct sk_buff *skb) 3067 { 3068 struct hci_ev_conn_complete *ev = data; 3069 struct hci_conn *conn; 3070 u8 status = ev->status; 3071 3072 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3073 3074 hci_dev_lock(hdev); 3075 3076 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3077 if (!conn) { 3078 /* In case of error status and there is no connection pending 3079 * just unlock as there is nothing to cleanup. 3080 */ 3081 if (ev->status) 3082 goto unlock; 3083 3084 /* Connection may not exist if auto-connected. Check the bredr 3085 * allowlist to see if this device is allowed to auto connect. 3086 * If link is an ACL type, create a connection class 3087 * automatically. 3088 * 3089 * Auto-connect will only occur if the event filter is 3090 * programmed with a given address. Right now, event filter is 3091 * only used during suspend. 3092 */ 3093 if (ev->link_type == ACL_LINK && 3094 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3095 &ev->bdaddr, 3096 BDADDR_BREDR)) { 3097 conn = hci_conn_add_unset(hdev, ev->link_type, 3098 &ev->bdaddr, HCI_ROLE_SLAVE); 3099 if (IS_ERR(conn)) { 3100 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3101 goto unlock; 3102 } 3103 } else { 3104 if (ev->link_type != SCO_LINK) 3105 goto unlock; 3106 3107 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3108 &ev->bdaddr); 3109 if (!conn) 3110 goto unlock; 3111 3112 conn->type = SCO_LINK; 3113 } 3114 } 3115 3116 /* The HCI_Connection_Complete event is only sent once per connection. 3117 * Processing it more than once per connection can corrupt kernel memory. 3118 * 3119 * As the connection handle is set here for the first time, it indicates 3120 * whether the connection is already set up. 3121 */ 3122 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 3123 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3124 goto unlock; 3125 } 3126 3127 if (!status) { 3128 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 3129 if (status) 3130 goto done; 3131 3132 if (conn->type == ACL_LINK) { 3133 conn->state = BT_CONFIG; 3134 hci_conn_hold(conn); 3135 3136 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3137 !hci_find_link_key(hdev, &ev->bdaddr)) 3138 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3139 else 3140 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3141 } else 3142 conn->state = BT_CONNECTED; 3143 3144 hci_debugfs_create_conn(conn); 3145 hci_conn_add_sysfs(conn); 3146 3147 if (test_bit(HCI_AUTH, &hdev->flags)) 3148 set_bit(HCI_CONN_AUTH, &conn->flags); 3149 3150 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3151 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3152 3153 /* "Link key request" completed ahead of "connect request" completes */ 3154 if (ev->encr_mode == 1 && !test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3155 ev->link_type == ACL_LINK) { 3156 struct link_key *key; 3157 struct hci_cp_read_enc_key_size cp; 3158 3159 key = hci_find_link_key(hdev, &ev->bdaddr); 3160 if (key) { 3161 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3162 3163 if (!read_key_size_capable(hdev)) { 3164 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3165 } else { 3166 cp.handle = cpu_to_le16(conn->handle); 3167 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3168 sizeof(cp), &cp)) { 3169 bt_dev_err(hdev, "sending read key size failed"); 3170 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3171 } 3172 } 3173 3174 hci_encrypt_cfm(conn, ev->status); 3175 } 3176 } 3177 3178 /* Get remote features */ 3179 if (conn->type == ACL_LINK) { 3180 struct hci_cp_read_remote_features cp; 3181 cp.handle = ev->handle; 3182 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3183 sizeof(cp), &cp); 3184 3185 hci_update_scan(hdev); 3186 } 3187 3188 /* Set packet type for incoming connection */ 3189 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3190 struct hci_cp_change_conn_ptype cp; 3191 cp.handle = ev->handle; 3192 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3193 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3194 &cp); 3195 } 3196 } 3197 3198 if (conn->type == ACL_LINK) 3199 hci_sco_setup(conn, ev->status); 3200 3201 done: 3202 if (status) { 3203 hci_conn_failed(conn, status); 3204 } else if (ev->link_type == SCO_LINK) { 3205 switch (conn->setting & SCO_AIRMODE_MASK) { 3206 case SCO_AIRMODE_CVSD: 3207 if (hdev->notify) 3208 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3209 break; 3210 } 3211 3212 hci_connect_cfm(conn, status); 3213 } 3214 3215 unlock: 3216 hci_dev_unlock(hdev); 3217 } 3218 3219 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3220 { 3221 struct hci_cp_reject_conn_req cp; 3222 3223 bacpy(&cp.bdaddr, bdaddr); 3224 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3225 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3226 } 3227 3228 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3229 struct sk_buff *skb) 3230 { 3231 struct hci_ev_conn_request *ev = data; 3232 int mask = hdev->link_mode; 3233 struct inquiry_entry *ie; 3234 struct hci_conn *conn; 3235 __u8 flags = 0; 3236 3237 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3238 3239 /* Reject incoming connection from device with same BD ADDR against 3240 * CVE-2020-26555 3241 */ 3242 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { 3243 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", 3244 &ev->bdaddr); 3245 hci_reject_conn(hdev, &ev->bdaddr); 3246 return; 3247 } 3248 3249 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3250 &flags); 3251 3252 if (!(mask & HCI_LM_ACCEPT)) { 3253 hci_reject_conn(hdev, &ev->bdaddr); 3254 return; 3255 } 3256 3257 hci_dev_lock(hdev); 3258 3259 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3260 BDADDR_BREDR)) { 3261 hci_reject_conn(hdev, &ev->bdaddr); 3262 goto unlock; 3263 } 3264 3265 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3266 * connection. These features are only touched through mgmt so 3267 * only do the checks if HCI_MGMT is set. 3268 */ 3269 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3270 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3271 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3272 BDADDR_BREDR)) { 3273 hci_reject_conn(hdev, &ev->bdaddr); 3274 goto unlock; 3275 } 3276 3277 /* Connection accepted */ 3278 3279 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3280 if (ie) 3281 memcpy(ie->data.dev_class, ev->dev_class, 3); 3282 3283 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3284 &ev->bdaddr); 3285 if (!conn) { 3286 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, 3287 HCI_ROLE_SLAVE); 3288 if (IS_ERR(conn)) { 3289 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3290 goto unlock; 3291 } 3292 } 3293 3294 memcpy(conn->dev_class, ev->dev_class, 3); 3295 3296 hci_dev_unlock(hdev); 3297 3298 if (ev->link_type == ACL_LINK || 3299 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3300 struct hci_cp_accept_conn_req cp; 3301 conn->state = BT_CONNECT; 3302 3303 bacpy(&cp.bdaddr, &ev->bdaddr); 3304 3305 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3306 cp.role = 0x00; /* Become central */ 3307 else 3308 cp.role = 0x01; /* Remain peripheral */ 3309 3310 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3311 } else if (!(flags & HCI_PROTO_DEFER)) { 3312 struct hci_cp_accept_sync_conn_req cp; 3313 conn->state = BT_CONNECT; 3314 3315 bacpy(&cp.bdaddr, &ev->bdaddr); 3316 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3317 3318 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3319 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3320 cp.max_latency = cpu_to_le16(0xffff); 3321 cp.content_format = cpu_to_le16(hdev->voice_setting); 3322 cp.retrans_effort = 0xff; 3323 3324 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3325 &cp); 3326 } else { 3327 conn->state = BT_CONNECT2; 3328 hci_connect_cfm(conn, 0); 3329 } 3330 3331 return; 3332 unlock: 3333 hci_dev_unlock(hdev); 3334 } 3335 3336 static u8 hci_to_mgmt_reason(u8 err) 3337 { 3338 switch (err) { 3339 case HCI_ERROR_CONNECTION_TIMEOUT: 3340 return MGMT_DEV_DISCONN_TIMEOUT; 3341 case HCI_ERROR_REMOTE_USER_TERM: 3342 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3343 case HCI_ERROR_REMOTE_POWER_OFF: 3344 return MGMT_DEV_DISCONN_REMOTE; 3345 case HCI_ERROR_LOCAL_HOST_TERM: 3346 return MGMT_DEV_DISCONN_LOCAL_HOST; 3347 default: 3348 return MGMT_DEV_DISCONN_UNKNOWN; 3349 } 3350 } 3351 3352 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3353 struct sk_buff *skb) 3354 { 3355 struct hci_ev_disconn_complete *ev = data; 3356 u8 reason; 3357 struct hci_conn_params *params; 3358 struct hci_conn *conn; 3359 bool mgmt_connected; 3360 3361 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3362 3363 hci_dev_lock(hdev); 3364 3365 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3366 if (!conn) 3367 goto unlock; 3368 3369 if (ev->status) { 3370 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3371 conn->dst_type, ev->status); 3372 goto unlock; 3373 } 3374 3375 conn->state = BT_CLOSED; 3376 3377 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3378 3379 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3380 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3381 else 3382 reason = hci_to_mgmt_reason(ev->reason); 3383 3384 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3385 reason, mgmt_connected); 3386 3387 if (conn->type == ACL_LINK) { 3388 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3389 hci_remove_link_key(hdev, &conn->dst); 3390 3391 hci_update_scan(hdev); 3392 } 3393 3394 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 3395 if (params) { 3396 switch (params->auto_connect) { 3397 case HCI_AUTO_CONN_LINK_LOSS: 3398 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3399 break; 3400 fallthrough; 3401 3402 case HCI_AUTO_CONN_DIRECT: 3403 case HCI_AUTO_CONN_ALWAYS: 3404 hci_pend_le_list_del_init(params); 3405 hci_pend_le_list_add(params, &hdev->pend_le_conns); 3406 hci_update_passive_scan(hdev); 3407 break; 3408 3409 default: 3410 break; 3411 } 3412 } 3413 3414 hci_disconn_cfm(conn, ev->reason); 3415 3416 /* Re-enable advertising if necessary, since it might 3417 * have been disabled by the connection. From the 3418 * HCI_LE_Set_Advertise_Enable command description in 3419 * the core specification (v4.0): 3420 * "The Controller shall continue advertising until the Host 3421 * issues an LE_Set_Advertise_Enable command with 3422 * Advertising_Enable set to 0x00 (Advertising is disabled) 3423 * or until a connection is created or until the Advertising 3424 * is timed out due to Directed Advertising." 3425 */ 3426 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3427 hdev->cur_adv_instance = conn->adv_instance; 3428 hci_enable_advertising(hdev); 3429 } 3430 3431 hci_conn_del(conn); 3432 3433 unlock: 3434 hci_dev_unlock(hdev); 3435 } 3436 3437 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3438 struct sk_buff *skb) 3439 { 3440 struct hci_ev_auth_complete *ev = data; 3441 struct hci_conn *conn; 3442 3443 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3444 3445 hci_dev_lock(hdev); 3446 3447 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3448 if (!conn) 3449 goto unlock; 3450 3451 if (!ev->status) { 3452 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3453 set_bit(HCI_CONN_AUTH, &conn->flags); 3454 conn->sec_level = conn->pending_sec_level; 3455 } else { 3456 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3457 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3458 3459 mgmt_auth_failed(conn, ev->status); 3460 } 3461 3462 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3463 3464 if (conn->state == BT_CONFIG) { 3465 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3466 struct hci_cp_set_conn_encrypt cp; 3467 cp.handle = ev->handle; 3468 cp.encrypt = 0x01; 3469 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3470 &cp); 3471 } else { 3472 conn->state = BT_CONNECTED; 3473 hci_connect_cfm(conn, ev->status); 3474 hci_conn_drop(conn); 3475 } 3476 } else { 3477 hci_auth_cfm(conn, ev->status); 3478 3479 hci_conn_hold(conn); 3480 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3481 hci_conn_drop(conn); 3482 } 3483 3484 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3485 if (!ev->status) { 3486 struct hci_cp_set_conn_encrypt cp; 3487 cp.handle = ev->handle; 3488 cp.encrypt = 0x01; 3489 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3490 &cp); 3491 } else { 3492 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3493 hci_encrypt_cfm(conn, ev->status); 3494 } 3495 } 3496 3497 unlock: 3498 hci_dev_unlock(hdev); 3499 } 3500 3501 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3502 struct sk_buff *skb) 3503 { 3504 struct hci_ev_remote_name *ev = data; 3505 struct hci_conn *conn; 3506 3507 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3508 3509 hci_dev_lock(hdev); 3510 3511 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3512 3513 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3514 goto check_auth; 3515 3516 if (ev->status == 0) 3517 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3518 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3519 else 3520 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3521 3522 check_auth: 3523 if (!conn) 3524 goto unlock; 3525 3526 if (!hci_outgoing_auth_needed(hdev, conn)) 3527 goto unlock; 3528 3529 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3530 struct hci_cp_auth_requested cp; 3531 3532 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3533 3534 cp.handle = __cpu_to_le16(conn->handle); 3535 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3536 } 3537 3538 unlock: 3539 hci_dev_unlock(hdev); 3540 } 3541 3542 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3543 struct sk_buff *skb) 3544 { 3545 struct hci_ev_encrypt_change *ev = data; 3546 struct hci_conn *conn; 3547 3548 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3549 3550 hci_dev_lock(hdev); 3551 3552 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3553 if (!conn) 3554 goto unlock; 3555 3556 if (!ev->status) { 3557 if (ev->encrypt) { 3558 /* Encryption implies authentication */ 3559 set_bit(HCI_CONN_AUTH, &conn->flags); 3560 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3561 conn->sec_level = conn->pending_sec_level; 3562 3563 /* P-256 authentication key implies FIPS */ 3564 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3565 set_bit(HCI_CONN_FIPS, &conn->flags); 3566 3567 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3568 conn->type == LE_LINK) 3569 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3570 } else { 3571 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3572 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3573 } 3574 } 3575 3576 /* We should disregard the current RPA and generate a new one 3577 * whenever the encryption procedure fails. 3578 */ 3579 if (ev->status && conn->type == LE_LINK) { 3580 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3581 hci_adv_instances_set_rpa_expired(hdev, true); 3582 } 3583 3584 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3585 3586 /* Check link security requirements are met */ 3587 if (!hci_conn_check_link_mode(conn)) 3588 ev->status = HCI_ERROR_AUTH_FAILURE; 3589 3590 if (ev->status && conn->state == BT_CONNECTED) { 3591 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3592 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3593 3594 /* Notify upper layers so they can cleanup before 3595 * disconnecting. 3596 */ 3597 hci_encrypt_cfm(conn, ev->status); 3598 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3599 hci_conn_drop(conn); 3600 goto unlock; 3601 } 3602 3603 /* Try reading the encryption key size for encrypted ACL links */ 3604 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3605 struct hci_cp_read_enc_key_size cp; 3606 3607 /* Only send HCI_Read_Encryption_Key_Size if the 3608 * controller really supports it. If it doesn't, assume 3609 * the default size (16). 3610 */ 3611 if (!read_key_size_capable(hdev)) { 3612 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3613 goto notify; 3614 } 3615 3616 cp.handle = cpu_to_le16(conn->handle); 3617 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3618 sizeof(cp), &cp)) { 3619 bt_dev_err(hdev, "sending read key size failed"); 3620 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3621 goto notify; 3622 } 3623 3624 goto unlock; 3625 } 3626 3627 /* We skip the WRITE_AUTH_PAYLOAD_TIMEOUT for ATS2851 based controllers 3628 * to avoid unexpected SMP command errors when pairing. 3629 */ 3630 if (test_bit(HCI_QUIRK_BROKEN_WRITE_AUTH_PAYLOAD_TIMEOUT, 3631 &hdev->quirks)) 3632 goto notify; 3633 3634 /* Set the default Authenticated Payload Timeout after 3635 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3636 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3637 * sent when the link is active and Encryption is enabled, the conn 3638 * type can be either LE or ACL and controller must support LMP Ping. 3639 * Ensure for AES-CCM encryption as well. 3640 */ 3641 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3642 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3643 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3644 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3645 struct hci_cp_write_auth_payload_to cp; 3646 3647 cp.handle = cpu_to_le16(conn->handle); 3648 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3649 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3650 sizeof(cp), &cp)) 3651 bt_dev_err(hdev, "write auth payload timeout failed"); 3652 } 3653 3654 notify: 3655 hci_encrypt_cfm(conn, ev->status); 3656 3657 unlock: 3658 hci_dev_unlock(hdev); 3659 } 3660 3661 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3662 struct sk_buff *skb) 3663 { 3664 struct hci_ev_change_link_key_complete *ev = data; 3665 struct hci_conn *conn; 3666 3667 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3668 3669 hci_dev_lock(hdev); 3670 3671 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3672 if (conn) { 3673 if (!ev->status) 3674 set_bit(HCI_CONN_SECURE, &conn->flags); 3675 3676 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3677 3678 hci_key_change_cfm(conn, ev->status); 3679 } 3680 3681 hci_dev_unlock(hdev); 3682 } 3683 3684 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3685 struct sk_buff *skb) 3686 { 3687 struct hci_ev_remote_features *ev = data; 3688 struct hci_conn *conn; 3689 3690 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3691 3692 hci_dev_lock(hdev); 3693 3694 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3695 if (!conn) 3696 goto unlock; 3697 3698 if (!ev->status) 3699 memcpy(conn->features[0], ev->features, 8); 3700 3701 if (conn->state != BT_CONFIG) 3702 goto unlock; 3703 3704 if (!ev->status && lmp_ext_feat_capable(hdev) && 3705 lmp_ext_feat_capable(conn)) { 3706 struct hci_cp_read_remote_ext_features cp; 3707 cp.handle = ev->handle; 3708 cp.page = 0x01; 3709 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3710 sizeof(cp), &cp); 3711 goto unlock; 3712 } 3713 3714 if (!ev->status) { 3715 struct hci_cp_remote_name_req cp; 3716 memset(&cp, 0, sizeof(cp)); 3717 bacpy(&cp.bdaddr, &conn->dst); 3718 cp.pscan_rep_mode = 0x02; 3719 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3720 } else { 3721 mgmt_device_connected(hdev, conn, NULL, 0); 3722 } 3723 3724 if (!hci_outgoing_auth_needed(hdev, conn)) { 3725 conn->state = BT_CONNECTED; 3726 hci_connect_cfm(conn, ev->status); 3727 hci_conn_drop(conn); 3728 } 3729 3730 unlock: 3731 hci_dev_unlock(hdev); 3732 } 3733 3734 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3735 { 3736 cancel_delayed_work(&hdev->cmd_timer); 3737 3738 rcu_read_lock(); 3739 if (!test_bit(HCI_RESET, &hdev->flags)) { 3740 if (ncmd) { 3741 cancel_delayed_work(&hdev->ncmd_timer); 3742 atomic_set(&hdev->cmd_cnt, 1); 3743 } else { 3744 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3745 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3746 HCI_NCMD_TIMEOUT); 3747 } 3748 } 3749 rcu_read_unlock(); 3750 } 3751 3752 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3753 struct sk_buff *skb) 3754 { 3755 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3756 3757 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3758 3759 if (rp->status) 3760 return rp->status; 3761 3762 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3763 hdev->le_pkts = rp->acl_max_pkt; 3764 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3765 hdev->iso_pkts = rp->iso_max_pkt; 3766 3767 hdev->le_cnt = hdev->le_pkts; 3768 hdev->iso_cnt = hdev->iso_pkts; 3769 3770 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3771 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3772 3773 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 3774 return HCI_ERROR_INVALID_PARAMETERS; 3775 3776 return rp->status; 3777 } 3778 3779 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3780 { 3781 struct hci_conn *conn, *tmp; 3782 3783 lockdep_assert_held(&hdev->lock); 3784 3785 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3786 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) || 3787 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3788 continue; 3789 3790 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3791 hci_conn_failed(conn, status); 3792 } 3793 } 3794 3795 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3796 struct sk_buff *skb) 3797 { 3798 struct hci_rp_le_set_cig_params *rp = data; 3799 struct hci_cp_le_set_cig_params *cp; 3800 struct hci_conn *conn; 3801 u8 status = rp->status; 3802 bool pending = false; 3803 int i; 3804 3805 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3806 3807 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3808 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3809 rp->cig_id != cp->cig_id)) { 3810 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3811 status = HCI_ERROR_UNSPECIFIED; 3812 } 3813 3814 hci_dev_lock(hdev); 3815 3816 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3817 * 3818 * If the Status return parameter is non-zero, then the state of the CIG 3819 * and its CIS configurations shall not be changed by the command. If 3820 * the CIG did not already exist, it shall not be created. 3821 */ 3822 if (status) { 3823 /* Keep current configuration, fail only the unbound CIS */ 3824 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3825 goto unlock; 3826 } 3827 3828 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3829 * 3830 * If the Status return parameter is zero, then the Controller shall 3831 * set the Connection_Handle arrayed return parameter to the connection 3832 * handle(s) corresponding to the CIS configurations specified in 3833 * the CIS_IDs command parameter, in the same order. 3834 */ 3835 for (i = 0; i < rp->num_handles; ++i) { 3836 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3837 cp->cis[i].cis_id); 3838 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3839 continue; 3840 3841 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3842 continue; 3843 3844 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3845 continue; 3846 3847 if (conn->state == BT_CONNECT) 3848 pending = true; 3849 } 3850 3851 unlock: 3852 if (pending) 3853 hci_le_create_cis_pending(hdev); 3854 3855 hci_dev_unlock(hdev); 3856 3857 return rp->status; 3858 } 3859 3860 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3861 struct sk_buff *skb) 3862 { 3863 struct hci_rp_le_setup_iso_path *rp = data; 3864 struct hci_cp_le_setup_iso_path *cp; 3865 struct hci_conn *conn; 3866 3867 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3868 3869 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3870 if (!cp) 3871 return rp->status; 3872 3873 hci_dev_lock(hdev); 3874 3875 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3876 if (!conn) 3877 goto unlock; 3878 3879 if (rp->status) { 3880 hci_connect_cfm(conn, rp->status); 3881 hci_conn_del(conn); 3882 goto unlock; 3883 } 3884 3885 switch (cp->direction) { 3886 /* Input (Host to Controller) */ 3887 case 0x00: 3888 /* Only confirm connection if output only */ 3889 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3890 hci_connect_cfm(conn, rp->status); 3891 break; 3892 /* Output (Controller to Host) */ 3893 case 0x01: 3894 /* Confirm connection since conn->iso_qos is always configured 3895 * last. 3896 */ 3897 hci_connect_cfm(conn, rp->status); 3898 3899 /* Notify device connected in case it is a BIG Sync */ 3900 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) 3901 mgmt_device_connected(hdev, conn, NULL, 0); 3902 3903 break; 3904 } 3905 3906 unlock: 3907 hci_dev_unlock(hdev); 3908 return rp->status; 3909 } 3910 3911 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3912 { 3913 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3914 } 3915 3916 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3917 struct sk_buff *skb) 3918 { 3919 struct hci_ev_status *rp = data; 3920 struct hci_cp_le_set_per_adv_params *cp; 3921 3922 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3923 3924 if (rp->status) 3925 return rp->status; 3926 3927 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3928 if (!cp) 3929 return rp->status; 3930 3931 /* TODO: set the conn state */ 3932 return rp->status; 3933 } 3934 3935 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3936 struct sk_buff *skb) 3937 { 3938 struct hci_ev_status *rp = data; 3939 struct hci_cp_le_set_per_adv_enable *cp; 3940 struct adv_info *adv = NULL, *n; 3941 u8 per_adv_cnt = 0; 3942 3943 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3944 3945 if (rp->status) 3946 return rp->status; 3947 3948 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3949 if (!cp) 3950 return rp->status; 3951 3952 hci_dev_lock(hdev); 3953 3954 adv = hci_find_adv_instance(hdev, cp->handle); 3955 3956 if (cp->enable) { 3957 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3958 3959 if (adv) 3960 adv->enabled = true; 3961 } else { 3962 /* If just one instance was disabled check if there are 3963 * any other instance enabled before clearing HCI_LE_PER_ADV. 3964 * The current periodic adv instance will be marked as 3965 * disabled once extended advertising is also disabled. 3966 */ 3967 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 3968 list) { 3969 if (adv->periodic && adv->enabled) 3970 per_adv_cnt++; 3971 } 3972 3973 if (per_adv_cnt > 1) 3974 goto unlock; 3975 3976 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3977 } 3978 3979 unlock: 3980 hci_dev_unlock(hdev); 3981 3982 return rp->status; 3983 } 3984 3985 #define HCI_CC_VL(_op, _func, _min, _max) \ 3986 { \ 3987 .op = _op, \ 3988 .func = _func, \ 3989 .min_len = _min, \ 3990 .max_len = _max, \ 3991 } 3992 3993 #define HCI_CC(_op, _func, _len) \ 3994 HCI_CC_VL(_op, _func, _len, _len) 3995 3996 #define HCI_CC_STATUS(_op, _func) \ 3997 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 3998 3999 static const struct hci_cc { 4000 u16 op; 4001 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 4002 u16 min_len; 4003 u16 max_len; 4004 } hci_cc_table[] = { 4005 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 4006 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 4007 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 4008 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 4009 hci_cc_remote_name_req_cancel), 4010 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 4011 sizeof(struct hci_rp_role_discovery)), 4012 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 4013 sizeof(struct hci_rp_read_link_policy)), 4014 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4015 sizeof(struct hci_rp_write_link_policy)), 4016 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4017 sizeof(struct hci_rp_read_def_link_policy)), 4018 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4019 hci_cc_write_def_link_policy), 4020 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4021 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4022 sizeof(struct hci_rp_read_stored_link_key)), 4023 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4024 sizeof(struct hci_rp_delete_stored_link_key)), 4025 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4026 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4027 sizeof(struct hci_rp_read_local_name)), 4028 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4029 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4030 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4031 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4032 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4033 sizeof(struct hci_rp_read_class_of_dev)), 4034 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4035 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4036 sizeof(struct hci_rp_read_voice_setting)), 4037 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4038 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4039 sizeof(struct hci_rp_read_num_supported_iac)), 4040 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4041 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4042 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4043 sizeof(struct hci_rp_read_auth_payload_to)), 4044 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4045 sizeof(struct hci_rp_write_auth_payload_to)), 4046 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4047 sizeof(struct hci_rp_read_local_version)), 4048 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4049 sizeof(struct hci_rp_read_local_commands)), 4050 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4051 sizeof(struct hci_rp_read_local_features)), 4052 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4053 sizeof(struct hci_rp_read_local_ext_features)), 4054 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4055 sizeof(struct hci_rp_read_buffer_size)), 4056 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4057 sizeof(struct hci_rp_read_bd_addr)), 4058 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4059 sizeof(struct hci_rp_read_local_pairing_opts)), 4060 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4061 sizeof(struct hci_rp_read_page_scan_activity)), 4062 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4063 hci_cc_write_page_scan_activity), 4064 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4065 sizeof(struct hci_rp_read_page_scan_type)), 4066 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4067 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4068 sizeof(struct hci_rp_read_clock)), 4069 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4070 sizeof(struct hci_rp_read_enc_key_size)), 4071 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4072 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4073 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4074 hci_cc_read_def_err_data_reporting, 4075 sizeof(struct hci_rp_read_def_err_data_reporting)), 4076 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4077 hci_cc_write_def_err_data_reporting), 4078 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4079 sizeof(struct hci_rp_pin_code_reply)), 4080 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4081 sizeof(struct hci_rp_pin_code_neg_reply)), 4082 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4083 sizeof(struct hci_rp_read_local_oob_data)), 4084 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4085 sizeof(struct hci_rp_read_local_oob_ext_data)), 4086 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4087 sizeof(struct hci_rp_le_read_buffer_size)), 4088 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4089 sizeof(struct hci_rp_le_read_local_features)), 4090 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4091 sizeof(struct hci_rp_le_read_adv_tx_power)), 4092 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4093 sizeof(struct hci_rp_user_confirm_reply)), 4094 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4095 sizeof(struct hci_rp_user_confirm_reply)), 4096 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4097 sizeof(struct hci_rp_user_confirm_reply)), 4098 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4099 sizeof(struct hci_rp_user_confirm_reply)), 4100 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4101 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4102 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4103 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4104 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4105 hci_cc_le_read_accept_list_size, 4106 sizeof(struct hci_rp_le_read_accept_list_size)), 4107 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4108 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4109 hci_cc_le_add_to_accept_list), 4110 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4111 hci_cc_le_del_from_accept_list), 4112 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4113 sizeof(struct hci_rp_le_read_supported_states)), 4114 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4115 sizeof(struct hci_rp_le_read_def_data_len)), 4116 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4117 hci_cc_le_write_def_data_len), 4118 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4119 hci_cc_le_add_to_resolv_list), 4120 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4121 hci_cc_le_del_from_resolv_list), 4122 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4123 hci_cc_le_clear_resolv_list), 4124 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4125 sizeof(struct hci_rp_le_read_resolv_list_size)), 4126 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4127 hci_cc_le_set_addr_resolution_enable), 4128 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4129 sizeof(struct hci_rp_le_read_max_data_len)), 4130 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4131 hci_cc_write_le_host_supported), 4132 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4133 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4134 sizeof(struct hci_rp_read_rssi)), 4135 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4136 sizeof(struct hci_rp_read_tx_power)), 4137 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4138 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4139 hci_cc_le_set_ext_scan_param), 4140 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4141 hci_cc_le_set_ext_scan_enable), 4142 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4143 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4144 hci_cc_le_read_num_adv_sets, 4145 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4146 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4147 sizeof(struct hci_rp_le_set_ext_adv_params)), 4148 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4149 hci_cc_le_set_ext_adv_enable), 4150 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4151 hci_cc_le_set_adv_set_random_addr), 4152 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4153 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4154 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4155 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4156 hci_cc_le_set_per_adv_enable), 4157 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4158 sizeof(struct hci_rp_le_read_transmit_power)), 4159 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4160 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4161 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4162 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4163 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4164 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4165 sizeof(struct hci_rp_le_setup_iso_path)), 4166 }; 4167 4168 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4169 struct sk_buff *skb) 4170 { 4171 void *data; 4172 4173 if (skb->len < cc->min_len) { 4174 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4175 cc->op, skb->len, cc->min_len); 4176 return HCI_ERROR_UNSPECIFIED; 4177 } 4178 4179 /* Just warn if the length is over max_len size it still be possible to 4180 * partially parse the cc so leave to callback to decide if that is 4181 * acceptable. 4182 */ 4183 if (skb->len > cc->max_len) 4184 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4185 cc->op, skb->len, cc->max_len); 4186 4187 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4188 if (!data) 4189 return HCI_ERROR_UNSPECIFIED; 4190 4191 return cc->func(hdev, data, skb); 4192 } 4193 4194 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4195 struct sk_buff *skb, u16 *opcode, u8 *status, 4196 hci_req_complete_t *req_complete, 4197 hci_req_complete_skb_t *req_complete_skb) 4198 { 4199 struct hci_ev_cmd_complete *ev = data; 4200 int i; 4201 4202 *opcode = __le16_to_cpu(ev->opcode); 4203 4204 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4205 4206 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4207 if (hci_cc_table[i].op == *opcode) { 4208 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4209 break; 4210 } 4211 } 4212 4213 if (i == ARRAY_SIZE(hci_cc_table)) { 4214 /* Unknown opcode, assume byte 0 contains the status, so 4215 * that e.g. __hci_cmd_sync() properly returns errors 4216 * for vendor specific commands send by HCI drivers. 4217 * If a vendor doesn't actually follow this convention we may 4218 * need to introduce a vendor CC table in order to properly set 4219 * the status. 4220 */ 4221 *status = skb->data[0]; 4222 } 4223 4224 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4225 4226 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4227 req_complete_skb); 4228 4229 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4230 bt_dev_err(hdev, 4231 "unexpected event for opcode 0x%4.4x", *opcode); 4232 return; 4233 } 4234 4235 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4236 queue_work(hdev->workqueue, &hdev->cmd_work); 4237 } 4238 4239 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4240 { 4241 struct hci_cp_le_create_cis *cp; 4242 bool pending = false; 4243 int i; 4244 4245 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4246 4247 if (!status) 4248 return; 4249 4250 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4251 if (!cp) 4252 return; 4253 4254 hci_dev_lock(hdev); 4255 4256 /* Remove connection if command failed */ 4257 for (i = 0; i < cp->num_cis; i++) { 4258 struct hci_conn *conn; 4259 u16 handle; 4260 4261 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4262 4263 conn = hci_conn_hash_lookup_handle(hdev, handle); 4264 if (conn) { 4265 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4266 &conn->flags)) 4267 pending = true; 4268 conn->state = BT_CLOSED; 4269 hci_connect_cfm(conn, status); 4270 hci_conn_del(conn); 4271 } 4272 } 4273 cp->num_cis = 0; 4274 4275 if (pending) 4276 hci_le_create_cis_pending(hdev); 4277 4278 hci_dev_unlock(hdev); 4279 } 4280 4281 #define HCI_CS(_op, _func) \ 4282 { \ 4283 .op = _op, \ 4284 .func = _func, \ 4285 } 4286 4287 static const struct hci_cs { 4288 u16 op; 4289 void (*func)(struct hci_dev *hdev, __u8 status); 4290 } hci_cs_table[] = { 4291 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4292 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4293 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4294 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4295 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4296 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4297 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4298 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4299 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4300 hci_cs_read_remote_ext_features), 4301 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4302 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4303 hci_cs_enhanced_setup_sync_conn), 4304 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4305 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4306 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4307 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4308 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4309 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4310 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4311 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4312 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4313 }; 4314 4315 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4316 struct sk_buff *skb, u16 *opcode, u8 *status, 4317 hci_req_complete_t *req_complete, 4318 hci_req_complete_skb_t *req_complete_skb) 4319 { 4320 struct hci_ev_cmd_status *ev = data; 4321 int i; 4322 4323 *opcode = __le16_to_cpu(ev->opcode); 4324 *status = ev->status; 4325 4326 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4327 4328 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4329 if (hci_cs_table[i].op == *opcode) { 4330 hci_cs_table[i].func(hdev, ev->status); 4331 break; 4332 } 4333 } 4334 4335 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4336 4337 /* Indicate request completion if the command failed. Also, if 4338 * we're not waiting for a special event and we get a success 4339 * command status we should try to flag the request as completed 4340 * (since for this kind of commands there will not be a command 4341 * complete event). 4342 */ 4343 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { 4344 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4345 req_complete_skb); 4346 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4347 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4348 *opcode); 4349 return; 4350 } 4351 } 4352 4353 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4354 queue_work(hdev->workqueue, &hdev->cmd_work); 4355 } 4356 4357 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4358 struct sk_buff *skb) 4359 { 4360 struct hci_ev_hardware_error *ev = data; 4361 4362 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4363 4364 hdev->hw_error_code = ev->code; 4365 4366 queue_work(hdev->req_workqueue, &hdev->error_reset); 4367 } 4368 4369 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4370 struct sk_buff *skb) 4371 { 4372 struct hci_ev_role_change *ev = data; 4373 struct hci_conn *conn; 4374 4375 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4376 4377 hci_dev_lock(hdev); 4378 4379 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4380 if (conn) { 4381 if (!ev->status) 4382 conn->role = ev->role; 4383 4384 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4385 4386 hci_role_switch_cfm(conn, ev->status, ev->role); 4387 } 4388 4389 hci_dev_unlock(hdev); 4390 } 4391 4392 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4393 struct sk_buff *skb) 4394 { 4395 struct hci_ev_num_comp_pkts *ev = data; 4396 int i; 4397 4398 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4399 flex_array_size(ev, handles, ev->num))) 4400 return; 4401 4402 bt_dev_dbg(hdev, "num %d", ev->num); 4403 4404 for (i = 0; i < ev->num; i++) { 4405 struct hci_comp_pkts_info *info = &ev->handles[i]; 4406 struct hci_conn *conn; 4407 __u16 handle, count; 4408 4409 handle = __le16_to_cpu(info->handle); 4410 count = __le16_to_cpu(info->count); 4411 4412 conn = hci_conn_hash_lookup_handle(hdev, handle); 4413 if (!conn) 4414 continue; 4415 4416 conn->sent -= count; 4417 4418 switch (conn->type) { 4419 case ACL_LINK: 4420 hdev->acl_cnt += count; 4421 if (hdev->acl_cnt > hdev->acl_pkts) 4422 hdev->acl_cnt = hdev->acl_pkts; 4423 break; 4424 4425 case LE_LINK: 4426 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 case SCO_LINK: 4438 hdev->sco_cnt += count; 4439 if (hdev->sco_cnt > hdev->sco_pkts) 4440 hdev->sco_cnt = hdev->sco_pkts; 4441 break; 4442 4443 case ISO_LINK: 4444 if (hdev->iso_pkts) { 4445 hdev->iso_cnt += count; 4446 if (hdev->iso_cnt > hdev->iso_pkts) 4447 hdev->iso_cnt = hdev->iso_pkts; 4448 } else if (hdev->le_pkts) { 4449 hdev->le_cnt += count; 4450 if (hdev->le_cnt > hdev->le_pkts) 4451 hdev->le_cnt = hdev->le_pkts; 4452 } else { 4453 hdev->acl_cnt += count; 4454 if (hdev->acl_cnt > hdev->acl_pkts) 4455 hdev->acl_cnt = hdev->acl_pkts; 4456 } 4457 break; 4458 4459 default: 4460 bt_dev_err(hdev, "unknown type %d conn %p", 4461 conn->type, conn); 4462 break; 4463 } 4464 } 4465 4466 queue_work(hdev->workqueue, &hdev->tx_work); 4467 } 4468 4469 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4470 struct sk_buff *skb) 4471 { 4472 struct hci_ev_mode_change *ev = data; 4473 struct hci_conn *conn; 4474 4475 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4476 4477 hci_dev_lock(hdev); 4478 4479 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4480 if (conn) { 4481 conn->mode = ev->mode; 4482 4483 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4484 &conn->flags)) { 4485 if (conn->mode == HCI_CM_ACTIVE) 4486 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4487 else 4488 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4489 } 4490 4491 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4492 hci_sco_setup(conn, ev->status); 4493 } 4494 4495 hci_dev_unlock(hdev); 4496 } 4497 4498 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4499 struct sk_buff *skb) 4500 { 4501 struct hci_ev_pin_code_req *ev = data; 4502 struct hci_conn *conn; 4503 4504 bt_dev_dbg(hdev, ""); 4505 4506 hci_dev_lock(hdev); 4507 4508 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4509 if (!conn) 4510 goto unlock; 4511 4512 if (conn->state == BT_CONNECTED) { 4513 hci_conn_hold(conn); 4514 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4515 hci_conn_drop(conn); 4516 } 4517 4518 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4519 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4520 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4521 sizeof(ev->bdaddr), &ev->bdaddr); 4522 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4523 u8 secure; 4524 4525 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4526 secure = 1; 4527 else 4528 secure = 0; 4529 4530 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4531 } 4532 4533 unlock: 4534 hci_dev_unlock(hdev); 4535 } 4536 4537 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4538 { 4539 if (key_type == HCI_LK_CHANGED_COMBINATION) 4540 return; 4541 4542 conn->pin_length = pin_len; 4543 conn->key_type = key_type; 4544 4545 switch (key_type) { 4546 case HCI_LK_LOCAL_UNIT: 4547 case HCI_LK_REMOTE_UNIT: 4548 case HCI_LK_DEBUG_COMBINATION: 4549 return; 4550 case HCI_LK_COMBINATION: 4551 if (pin_len == 16) 4552 conn->pending_sec_level = BT_SECURITY_HIGH; 4553 else 4554 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4555 break; 4556 case HCI_LK_UNAUTH_COMBINATION_P192: 4557 case HCI_LK_UNAUTH_COMBINATION_P256: 4558 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4559 break; 4560 case HCI_LK_AUTH_COMBINATION_P192: 4561 conn->pending_sec_level = BT_SECURITY_HIGH; 4562 break; 4563 case HCI_LK_AUTH_COMBINATION_P256: 4564 conn->pending_sec_level = BT_SECURITY_FIPS; 4565 break; 4566 } 4567 } 4568 4569 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4570 struct sk_buff *skb) 4571 { 4572 struct hci_ev_link_key_req *ev = data; 4573 struct hci_cp_link_key_reply cp; 4574 struct hci_conn *conn; 4575 struct link_key *key; 4576 4577 bt_dev_dbg(hdev, ""); 4578 4579 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4580 return; 4581 4582 hci_dev_lock(hdev); 4583 4584 key = hci_find_link_key(hdev, &ev->bdaddr); 4585 if (!key) { 4586 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4587 goto not_found; 4588 } 4589 4590 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4591 4592 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4593 if (conn) { 4594 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4595 4596 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4597 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4598 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4599 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4600 goto not_found; 4601 } 4602 4603 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4604 (conn->pending_sec_level == BT_SECURITY_HIGH || 4605 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4606 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4607 goto not_found; 4608 } 4609 4610 conn_set_key(conn, key->type, key->pin_len); 4611 } 4612 4613 bacpy(&cp.bdaddr, &ev->bdaddr); 4614 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4615 4616 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4617 4618 hci_dev_unlock(hdev); 4619 4620 return; 4621 4622 not_found: 4623 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4624 hci_dev_unlock(hdev); 4625 } 4626 4627 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4628 struct sk_buff *skb) 4629 { 4630 struct hci_ev_link_key_notify *ev = data; 4631 struct hci_conn *conn; 4632 struct link_key *key; 4633 bool persistent; 4634 u8 pin_len = 0; 4635 4636 bt_dev_dbg(hdev, ""); 4637 4638 hci_dev_lock(hdev); 4639 4640 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4641 if (!conn) 4642 goto unlock; 4643 4644 /* Ignore NULL link key against CVE-2020-26555 */ 4645 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4646 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4647 &ev->bdaddr); 4648 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4649 hci_conn_drop(conn); 4650 goto unlock; 4651 } 4652 4653 hci_conn_hold(conn); 4654 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4655 hci_conn_drop(conn); 4656 4657 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4658 conn_set_key(conn, ev->key_type, conn->pin_length); 4659 4660 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4661 goto unlock; 4662 4663 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4664 ev->key_type, pin_len, &persistent); 4665 if (!key) 4666 goto unlock; 4667 4668 /* Update connection information since adding the key will have 4669 * fixed up the type in the case of changed combination keys. 4670 */ 4671 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4672 conn_set_key(conn, key->type, key->pin_len); 4673 4674 mgmt_new_link_key(hdev, key, persistent); 4675 4676 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4677 * is set. If it's not set simply remove the key from the kernel 4678 * list (we've still notified user space about it but with 4679 * store_hint being 0). 4680 */ 4681 if (key->type == HCI_LK_DEBUG_COMBINATION && 4682 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4683 list_del_rcu(&key->list); 4684 kfree_rcu(key, rcu); 4685 goto unlock; 4686 } 4687 4688 if (persistent) 4689 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4690 else 4691 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4692 4693 unlock: 4694 hci_dev_unlock(hdev); 4695 } 4696 4697 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4698 struct sk_buff *skb) 4699 { 4700 struct hci_ev_clock_offset *ev = data; 4701 struct hci_conn *conn; 4702 4703 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4704 4705 hci_dev_lock(hdev); 4706 4707 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4708 if (conn && !ev->status) { 4709 struct inquiry_entry *ie; 4710 4711 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4712 if (ie) { 4713 ie->data.clock_offset = ev->clock_offset; 4714 ie->timestamp = jiffies; 4715 } 4716 } 4717 4718 hci_dev_unlock(hdev); 4719 } 4720 4721 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4722 struct sk_buff *skb) 4723 { 4724 struct hci_ev_pkt_type_change *ev = data; 4725 struct hci_conn *conn; 4726 4727 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4728 4729 hci_dev_lock(hdev); 4730 4731 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4732 if (conn && !ev->status) 4733 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4734 4735 hci_dev_unlock(hdev); 4736 } 4737 4738 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4739 struct sk_buff *skb) 4740 { 4741 struct hci_ev_pscan_rep_mode *ev = data; 4742 struct inquiry_entry *ie; 4743 4744 bt_dev_dbg(hdev, ""); 4745 4746 hci_dev_lock(hdev); 4747 4748 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4749 if (ie) { 4750 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4751 ie->timestamp = jiffies; 4752 } 4753 4754 hci_dev_unlock(hdev); 4755 } 4756 4757 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4758 struct sk_buff *skb) 4759 { 4760 struct hci_ev_inquiry_result_rssi *ev = edata; 4761 struct inquiry_data data; 4762 int i; 4763 4764 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4765 4766 if (!ev->num) 4767 return; 4768 4769 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4770 return; 4771 4772 hci_dev_lock(hdev); 4773 4774 if (skb->len == array_size(ev->num, 4775 sizeof(struct inquiry_info_rssi_pscan))) { 4776 struct inquiry_info_rssi_pscan *info; 4777 4778 for (i = 0; i < ev->num; i++) { 4779 u32 flags; 4780 4781 info = hci_ev_skb_pull(hdev, skb, 4782 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4783 sizeof(*info)); 4784 if (!info) { 4785 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4786 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4787 goto unlock; 4788 } 4789 4790 bacpy(&data.bdaddr, &info->bdaddr); 4791 data.pscan_rep_mode = info->pscan_rep_mode; 4792 data.pscan_period_mode = info->pscan_period_mode; 4793 data.pscan_mode = info->pscan_mode; 4794 memcpy(data.dev_class, info->dev_class, 3); 4795 data.clock_offset = info->clock_offset; 4796 data.rssi = info->rssi; 4797 data.ssp_mode = 0x00; 4798 4799 flags = hci_inquiry_cache_update(hdev, &data, false); 4800 4801 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4802 info->dev_class, info->rssi, 4803 flags, NULL, 0, NULL, 0, 0); 4804 } 4805 } else if (skb->len == array_size(ev->num, 4806 sizeof(struct inquiry_info_rssi))) { 4807 struct inquiry_info_rssi *info; 4808 4809 for (i = 0; i < ev->num; i++) { 4810 u32 flags; 4811 4812 info = hci_ev_skb_pull(hdev, skb, 4813 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4814 sizeof(*info)); 4815 if (!info) { 4816 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4817 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4818 goto unlock; 4819 } 4820 4821 bacpy(&data.bdaddr, &info->bdaddr); 4822 data.pscan_rep_mode = info->pscan_rep_mode; 4823 data.pscan_period_mode = info->pscan_period_mode; 4824 data.pscan_mode = 0x00; 4825 memcpy(data.dev_class, info->dev_class, 3); 4826 data.clock_offset = info->clock_offset; 4827 data.rssi = info->rssi; 4828 data.ssp_mode = 0x00; 4829 4830 flags = hci_inquiry_cache_update(hdev, &data, false); 4831 4832 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4833 info->dev_class, info->rssi, 4834 flags, NULL, 0, NULL, 0, 0); 4835 } 4836 } else { 4837 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4838 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4839 } 4840 unlock: 4841 hci_dev_unlock(hdev); 4842 } 4843 4844 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4845 struct sk_buff *skb) 4846 { 4847 struct hci_ev_remote_ext_features *ev = data; 4848 struct hci_conn *conn; 4849 4850 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4851 4852 hci_dev_lock(hdev); 4853 4854 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4855 if (!conn) 4856 goto unlock; 4857 4858 if (ev->page < HCI_MAX_PAGES) 4859 memcpy(conn->features[ev->page], ev->features, 8); 4860 4861 if (!ev->status && ev->page == 0x01) { 4862 struct inquiry_entry *ie; 4863 4864 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4865 if (ie) 4866 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4867 4868 if (ev->features[0] & LMP_HOST_SSP) { 4869 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4870 } else { 4871 /* It is mandatory by the Bluetooth specification that 4872 * Extended Inquiry Results are only used when Secure 4873 * Simple Pairing is enabled, but some devices violate 4874 * this. 4875 * 4876 * To make these devices work, the internal SSP 4877 * enabled flag needs to be cleared if the remote host 4878 * features do not indicate SSP support */ 4879 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4880 } 4881 4882 if (ev->features[0] & LMP_HOST_SC) 4883 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4884 } 4885 4886 if (conn->state != BT_CONFIG) 4887 goto unlock; 4888 4889 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4890 struct hci_cp_remote_name_req cp; 4891 memset(&cp, 0, sizeof(cp)); 4892 bacpy(&cp.bdaddr, &conn->dst); 4893 cp.pscan_rep_mode = 0x02; 4894 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4895 } else { 4896 mgmt_device_connected(hdev, conn, NULL, 0); 4897 } 4898 4899 if (!hci_outgoing_auth_needed(hdev, conn)) { 4900 conn->state = BT_CONNECTED; 4901 hci_connect_cfm(conn, ev->status); 4902 hci_conn_drop(conn); 4903 } 4904 4905 unlock: 4906 hci_dev_unlock(hdev); 4907 } 4908 4909 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4910 struct sk_buff *skb) 4911 { 4912 struct hci_ev_sync_conn_complete *ev = data; 4913 struct hci_conn *conn; 4914 u8 status = ev->status; 4915 4916 switch (ev->link_type) { 4917 case SCO_LINK: 4918 case ESCO_LINK: 4919 break; 4920 default: 4921 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4922 * for HCI_Synchronous_Connection_Complete is limited to 4923 * either SCO or eSCO 4924 */ 4925 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4926 return; 4927 } 4928 4929 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4930 4931 hci_dev_lock(hdev); 4932 4933 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4934 if (!conn) { 4935 if (ev->link_type == ESCO_LINK) 4936 goto unlock; 4937 4938 /* When the link type in the event indicates SCO connection 4939 * and lookup of the connection object fails, then check 4940 * if an eSCO connection object exists. 4941 * 4942 * The core limits the synchronous connections to either 4943 * SCO or eSCO. The eSCO connection is preferred and tried 4944 * to be setup first and until successfully established, 4945 * the link type will be hinted as eSCO. 4946 */ 4947 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4948 if (!conn) 4949 goto unlock; 4950 } 4951 4952 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4953 * Processing it more than once per connection can corrupt kernel memory. 4954 * 4955 * As the connection handle is set here for the first time, it indicates 4956 * whether the connection is already set up. 4957 */ 4958 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 4959 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 4960 goto unlock; 4961 } 4962 4963 switch (status) { 4964 case 0x00: 4965 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 4966 if (status) { 4967 conn->state = BT_CLOSED; 4968 break; 4969 } 4970 4971 conn->state = BT_CONNECTED; 4972 conn->type = ev->link_type; 4973 4974 hci_debugfs_create_conn(conn); 4975 hci_conn_add_sysfs(conn); 4976 break; 4977 4978 case 0x10: /* Connection Accept Timeout */ 4979 case 0x0d: /* Connection Rejected due to Limited Resources */ 4980 case 0x11: /* Unsupported Feature or Parameter Value */ 4981 case 0x1c: /* SCO interval rejected */ 4982 case 0x1a: /* Unsupported Remote Feature */ 4983 case 0x1e: /* Invalid LMP Parameters */ 4984 case 0x1f: /* Unspecified error */ 4985 case 0x20: /* Unsupported LMP Parameter value */ 4986 if (conn->out) { 4987 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 4988 (hdev->esco_type & EDR_ESCO_MASK); 4989 if (hci_setup_sync(conn, conn->parent->handle)) 4990 goto unlock; 4991 } 4992 fallthrough; 4993 4994 default: 4995 conn->state = BT_CLOSED; 4996 break; 4997 } 4998 4999 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5000 /* Notify only in case of SCO over HCI transport data path which 5001 * is zero and non-zero value shall be non-HCI transport data path 5002 */ 5003 if (conn->codec.data_path == 0 && hdev->notify) { 5004 switch (ev->air_mode) { 5005 case 0x02: 5006 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5007 break; 5008 case 0x03: 5009 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5010 break; 5011 } 5012 } 5013 5014 hci_connect_cfm(conn, status); 5015 if (status) 5016 hci_conn_del(conn); 5017 5018 unlock: 5019 hci_dev_unlock(hdev); 5020 } 5021 5022 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5023 { 5024 size_t parsed = 0; 5025 5026 while (parsed < eir_len) { 5027 u8 field_len = eir[0]; 5028 5029 if (field_len == 0) 5030 return parsed; 5031 5032 parsed += field_len + 1; 5033 eir += field_len + 1; 5034 } 5035 5036 return eir_len; 5037 } 5038 5039 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5040 struct sk_buff *skb) 5041 { 5042 struct hci_ev_ext_inquiry_result *ev = edata; 5043 struct inquiry_data data; 5044 size_t eir_len; 5045 int i; 5046 5047 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5048 flex_array_size(ev, info, ev->num))) 5049 return; 5050 5051 bt_dev_dbg(hdev, "num %d", ev->num); 5052 5053 if (!ev->num) 5054 return; 5055 5056 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5057 return; 5058 5059 hci_dev_lock(hdev); 5060 5061 for (i = 0; i < ev->num; i++) { 5062 struct extended_inquiry_info *info = &ev->info[i]; 5063 u32 flags; 5064 bool name_known; 5065 5066 bacpy(&data.bdaddr, &info->bdaddr); 5067 data.pscan_rep_mode = info->pscan_rep_mode; 5068 data.pscan_period_mode = info->pscan_period_mode; 5069 data.pscan_mode = 0x00; 5070 memcpy(data.dev_class, info->dev_class, 3); 5071 data.clock_offset = info->clock_offset; 5072 data.rssi = info->rssi; 5073 data.ssp_mode = 0x01; 5074 5075 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5076 name_known = eir_get_data(info->data, 5077 sizeof(info->data), 5078 EIR_NAME_COMPLETE, NULL); 5079 else 5080 name_known = true; 5081 5082 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5083 5084 eir_len = eir_get_length(info->data, sizeof(info->data)); 5085 5086 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5087 info->dev_class, info->rssi, 5088 flags, info->data, eir_len, NULL, 0, 0); 5089 } 5090 5091 hci_dev_unlock(hdev); 5092 } 5093 5094 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5095 struct sk_buff *skb) 5096 { 5097 struct hci_ev_key_refresh_complete *ev = data; 5098 struct hci_conn *conn; 5099 5100 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5101 __le16_to_cpu(ev->handle)); 5102 5103 hci_dev_lock(hdev); 5104 5105 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5106 if (!conn) 5107 goto unlock; 5108 5109 /* For BR/EDR the necessary steps are taken through the 5110 * auth_complete event. 5111 */ 5112 if (conn->type != LE_LINK) 5113 goto unlock; 5114 5115 if (!ev->status) 5116 conn->sec_level = conn->pending_sec_level; 5117 5118 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5119 5120 if (ev->status && conn->state == BT_CONNECTED) { 5121 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5122 hci_conn_drop(conn); 5123 goto unlock; 5124 } 5125 5126 if (conn->state == BT_CONFIG) { 5127 if (!ev->status) 5128 conn->state = BT_CONNECTED; 5129 5130 hci_connect_cfm(conn, ev->status); 5131 hci_conn_drop(conn); 5132 } else { 5133 hci_auth_cfm(conn, ev->status); 5134 5135 hci_conn_hold(conn); 5136 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5137 hci_conn_drop(conn); 5138 } 5139 5140 unlock: 5141 hci_dev_unlock(hdev); 5142 } 5143 5144 static u8 hci_get_auth_req(struct hci_conn *conn) 5145 { 5146 /* If remote requests no-bonding follow that lead */ 5147 if (conn->remote_auth == HCI_AT_NO_BONDING || 5148 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5149 return conn->remote_auth | (conn->auth_type & 0x01); 5150 5151 /* If both remote and local have enough IO capabilities, require 5152 * MITM protection 5153 */ 5154 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5155 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5156 return conn->remote_auth | 0x01; 5157 5158 /* No MITM protection possible so ignore remote requirement */ 5159 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5160 } 5161 5162 static u8 bredr_oob_data_present(struct hci_conn *conn) 5163 { 5164 struct hci_dev *hdev = conn->hdev; 5165 struct oob_data *data; 5166 5167 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5168 if (!data) 5169 return 0x00; 5170 5171 if (bredr_sc_enabled(hdev)) { 5172 /* When Secure Connections is enabled, then just 5173 * return the present value stored with the OOB 5174 * data. The stored value contains the right present 5175 * information. However it can only be trusted when 5176 * not in Secure Connection Only mode. 5177 */ 5178 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5179 return data->present; 5180 5181 /* When Secure Connections Only mode is enabled, then 5182 * the P-256 values are required. If they are not 5183 * available, then do not declare that OOB data is 5184 * present. 5185 */ 5186 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5187 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5188 return 0x00; 5189 5190 return 0x02; 5191 } 5192 5193 /* When Secure Connections is not enabled or actually 5194 * not supported by the hardware, then check that if 5195 * P-192 data values are present. 5196 */ 5197 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5198 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5199 return 0x00; 5200 5201 return 0x01; 5202 } 5203 5204 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5205 struct sk_buff *skb) 5206 { 5207 struct hci_ev_io_capa_request *ev = data; 5208 struct hci_conn *conn; 5209 5210 bt_dev_dbg(hdev, ""); 5211 5212 hci_dev_lock(hdev); 5213 5214 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5215 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5216 goto unlock; 5217 5218 /* Assume remote supports SSP since it has triggered this event */ 5219 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5220 5221 hci_conn_hold(conn); 5222 5223 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5224 goto unlock; 5225 5226 /* Allow pairing if we're pairable, the initiators of the 5227 * pairing or if the remote is not requesting bonding. 5228 */ 5229 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5230 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5231 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5232 struct hci_cp_io_capability_reply cp; 5233 5234 bacpy(&cp.bdaddr, &ev->bdaddr); 5235 /* Change the IO capability from KeyboardDisplay 5236 * to DisplayYesNo as it is not supported by BT spec. */ 5237 cp.capability = (conn->io_capability == 0x04) ? 5238 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5239 5240 /* If we are initiators, there is no remote information yet */ 5241 if (conn->remote_auth == 0xff) { 5242 /* Request MITM protection if our IO caps allow it 5243 * except for the no-bonding case. 5244 */ 5245 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5246 conn->auth_type != HCI_AT_NO_BONDING) 5247 conn->auth_type |= 0x01; 5248 } else { 5249 conn->auth_type = hci_get_auth_req(conn); 5250 } 5251 5252 /* If we're not bondable, force one of the non-bondable 5253 * authentication requirement values. 5254 */ 5255 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5256 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5257 5258 cp.authentication = conn->auth_type; 5259 cp.oob_data = bredr_oob_data_present(conn); 5260 5261 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5262 sizeof(cp), &cp); 5263 } else { 5264 struct hci_cp_io_capability_neg_reply cp; 5265 5266 bacpy(&cp.bdaddr, &ev->bdaddr); 5267 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5268 5269 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5270 sizeof(cp), &cp); 5271 } 5272 5273 unlock: 5274 hci_dev_unlock(hdev); 5275 } 5276 5277 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5278 struct sk_buff *skb) 5279 { 5280 struct hci_ev_io_capa_reply *ev = data; 5281 struct hci_conn *conn; 5282 5283 bt_dev_dbg(hdev, ""); 5284 5285 hci_dev_lock(hdev); 5286 5287 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5288 if (!conn) 5289 goto unlock; 5290 5291 conn->remote_cap = ev->capability; 5292 conn->remote_auth = ev->authentication; 5293 5294 unlock: 5295 hci_dev_unlock(hdev); 5296 } 5297 5298 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5299 struct sk_buff *skb) 5300 { 5301 struct hci_ev_user_confirm_req *ev = data; 5302 int loc_mitm, rem_mitm, confirm_hint = 0; 5303 struct hci_conn *conn; 5304 5305 bt_dev_dbg(hdev, ""); 5306 5307 hci_dev_lock(hdev); 5308 5309 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5310 goto unlock; 5311 5312 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5313 if (!conn) 5314 goto unlock; 5315 5316 loc_mitm = (conn->auth_type & 0x01); 5317 rem_mitm = (conn->remote_auth & 0x01); 5318 5319 /* If we require MITM but the remote device can't provide that 5320 * (it has NoInputNoOutput) then reject the confirmation 5321 * request. We check the security level here since it doesn't 5322 * necessarily match conn->auth_type. 5323 */ 5324 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5325 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5326 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5327 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5328 sizeof(ev->bdaddr), &ev->bdaddr); 5329 goto unlock; 5330 } 5331 5332 /* If no side requires MITM protection; use JUST_CFM method */ 5333 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5334 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5335 5336 /* If we're not the initiator of request authorization and the 5337 * local IO capability is not NoInputNoOutput, use JUST_WORKS 5338 * method (mgmt_user_confirm with confirm_hint set to 1). 5339 */ 5340 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5341 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) { 5342 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5343 confirm_hint = 1; 5344 goto confirm; 5345 } 5346 5347 /* If there already exists link key in local host, leave the 5348 * decision to user space since the remote device could be 5349 * legitimate or malicious. 5350 */ 5351 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5352 bt_dev_dbg(hdev, "Local host already has link key"); 5353 confirm_hint = 1; 5354 goto confirm; 5355 } 5356 5357 BT_DBG("Auto-accept of user confirmation with %ums delay", 5358 hdev->auto_accept_delay); 5359 5360 if (hdev->auto_accept_delay > 0) { 5361 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5362 queue_delayed_work(conn->hdev->workqueue, 5363 &conn->auto_accept_work, delay); 5364 goto unlock; 5365 } 5366 5367 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5368 sizeof(ev->bdaddr), &ev->bdaddr); 5369 goto unlock; 5370 } 5371 5372 confirm: 5373 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5374 le32_to_cpu(ev->passkey), confirm_hint); 5375 5376 unlock: 5377 hci_dev_unlock(hdev); 5378 } 5379 5380 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5381 struct sk_buff *skb) 5382 { 5383 struct hci_ev_user_passkey_req *ev = data; 5384 5385 bt_dev_dbg(hdev, ""); 5386 5387 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5388 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5389 } 5390 5391 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5392 struct sk_buff *skb) 5393 { 5394 struct hci_ev_user_passkey_notify *ev = data; 5395 struct hci_conn *conn; 5396 5397 bt_dev_dbg(hdev, ""); 5398 5399 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5400 if (!conn) 5401 return; 5402 5403 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5404 conn->passkey_entered = 0; 5405 5406 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5407 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5408 conn->dst_type, conn->passkey_notify, 5409 conn->passkey_entered); 5410 } 5411 5412 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5413 struct sk_buff *skb) 5414 { 5415 struct hci_ev_keypress_notify *ev = data; 5416 struct hci_conn *conn; 5417 5418 bt_dev_dbg(hdev, ""); 5419 5420 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5421 if (!conn) 5422 return; 5423 5424 switch (ev->type) { 5425 case HCI_KEYPRESS_STARTED: 5426 conn->passkey_entered = 0; 5427 return; 5428 5429 case HCI_KEYPRESS_ENTERED: 5430 conn->passkey_entered++; 5431 break; 5432 5433 case HCI_KEYPRESS_ERASED: 5434 conn->passkey_entered--; 5435 break; 5436 5437 case HCI_KEYPRESS_CLEARED: 5438 conn->passkey_entered = 0; 5439 break; 5440 5441 case HCI_KEYPRESS_COMPLETED: 5442 return; 5443 } 5444 5445 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5446 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5447 conn->dst_type, conn->passkey_notify, 5448 conn->passkey_entered); 5449 } 5450 5451 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5452 struct sk_buff *skb) 5453 { 5454 struct hci_ev_simple_pair_complete *ev = data; 5455 struct hci_conn *conn; 5456 5457 bt_dev_dbg(hdev, ""); 5458 5459 hci_dev_lock(hdev); 5460 5461 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5462 if (!conn || !hci_conn_ssp_enabled(conn)) 5463 goto unlock; 5464 5465 /* Reset the authentication requirement to unknown */ 5466 conn->remote_auth = 0xff; 5467 5468 /* To avoid duplicate auth_failed events to user space we check 5469 * the HCI_CONN_AUTH_PEND flag which will be set if we 5470 * initiated the authentication. A traditional auth_complete 5471 * event gets always produced as initiator and is also mapped to 5472 * the mgmt_auth_failed event */ 5473 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5474 mgmt_auth_failed(conn, ev->status); 5475 5476 hci_conn_drop(conn); 5477 5478 unlock: 5479 hci_dev_unlock(hdev); 5480 } 5481 5482 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5483 struct sk_buff *skb) 5484 { 5485 struct hci_ev_remote_host_features *ev = data; 5486 struct inquiry_entry *ie; 5487 struct hci_conn *conn; 5488 5489 bt_dev_dbg(hdev, ""); 5490 5491 hci_dev_lock(hdev); 5492 5493 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5494 if (conn) 5495 memcpy(conn->features[1], ev->features, 8); 5496 5497 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5498 if (ie) 5499 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5500 5501 hci_dev_unlock(hdev); 5502 } 5503 5504 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5505 struct sk_buff *skb) 5506 { 5507 struct hci_ev_remote_oob_data_request *ev = edata; 5508 struct oob_data *data; 5509 5510 bt_dev_dbg(hdev, ""); 5511 5512 hci_dev_lock(hdev); 5513 5514 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5515 goto unlock; 5516 5517 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5518 if (!data) { 5519 struct hci_cp_remote_oob_data_neg_reply cp; 5520 5521 bacpy(&cp.bdaddr, &ev->bdaddr); 5522 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5523 sizeof(cp), &cp); 5524 goto unlock; 5525 } 5526 5527 if (bredr_sc_enabled(hdev)) { 5528 struct hci_cp_remote_oob_ext_data_reply cp; 5529 5530 bacpy(&cp.bdaddr, &ev->bdaddr); 5531 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5532 memset(cp.hash192, 0, sizeof(cp.hash192)); 5533 memset(cp.rand192, 0, sizeof(cp.rand192)); 5534 } else { 5535 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5536 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5537 } 5538 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5539 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5540 5541 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5542 sizeof(cp), &cp); 5543 } else { 5544 struct hci_cp_remote_oob_data_reply cp; 5545 5546 bacpy(&cp.bdaddr, &ev->bdaddr); 5547 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5548 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5549 5550 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5551 sizeof(cp), &cp); 5552 } 5553 5554 unlock: 5555 hci_dev_unlock(hdev); 5556 } 5557 5558 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5559 u8 bdaddr_type, bdaddr_t *local_rpa) 5560 { 5561 if (conn->out) { 5562 conn->dst_type = bdaddr_type; 5563 conn->resp_addr_type = bdaddr_type; 5564 bacpy(&conn->resp_addr, bdaddr); 5565 5566 /* Check if the controller has set a Local RPA then it must be 5567 * used instead or hdev->rpa. 5568 */ 5569 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5570 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5571 bacpy(&conn->init_addr, local_rpa); 5572 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5573 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5574 bacpy(&conn->init_addr, &conn->hdev->rpa); 5575 } else { 5576 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5577 &conn->init_addr_type); 5578 } 5579 } else { 5580 conn->resp_addr_type = conn->hdev->adv_addr_type; 5581 /* Check if the controller has set a Local RPA then it must be 5582 * used instead or hdev->rpa. 5583 */ 5584 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5585 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5586 bacpy(&conn->resp_addr, local_rpa); 5587 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5588 /* In case of ext adv, resp_addr will be updated in 5589 * Adv Terminated event. 5590 */ 5591 if (!ext_adv_capable(conn->hdev)) 5592 bacpy(&conn->resp_addr, 5593 &conn->hdev->random_addr); 5594 } else { 5595 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5596 } 5597 5598 conn->init_addr_type = bdaddr_type; 5599 bacpy(&conn->init_addr, bdaddr); 5600 5601 /* For incoming connections, set the default minimum 5602 * and maximum connection interval. They will be used 5603 * to check if the parameters are in range and if not 5604 * trigger the connection update procedure. 5605 */ 5606 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5607 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5608 } 5609 } 5610 5611 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5612 bdaddr_t *bdaddr, u8 bdaddr_type, 5613 bdaddr_t *local_rpa, u8 role, u16 handle, 5614 u16 interval, u16 latency, 5615 u16 supervision_timeout) 5616 { 5617 struct hci_conn_params *params; 5618 struct hci_conn *conn; 5619 struct smp_irk *irk; 5620 u8 addr_type; 5621 5622 hci_dev_lock(hdev); 5623 5624 /* All controllers implicitly stop advertising in the event of a 5625 * connection, so ensure that the state bit is cleared. 5626 */ 5627 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5628 5629 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5630 if (!conn) { 5631 /* In case of error status and there is no connection pending 5632 * just unlock as there is nothing to cleanup. 5633 */ 5634 if (status) 5635 goto unlock; 5636 5637 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5638 if (IS_ERR(conn)) { 5639 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 5640 goto unlock; 5641 } 5642 5643 conn->dst_type = bdaddr_type; 5644 5645 /* If we didn't have a hci_conn object previously 5646 * but we're in central role this must be something 5647 * initiated using an accept list. Since accept list based 5648 * connections are not "first class citizens" we don't 5649 * have full tracking of them. Therefore, we go ahead 5650 * with a "best effort" approach of determining the 5651 * initiator address based on the HCI_PRIVACY flag. 5652 */ 5653 if (conn->out) { 5654 conn->resp_addr_type = bdaddr_type; 5655 bacpy(&conn->resp_addr, bdaddr); 5656 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5657 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5658 bacpy(&conn->init_addr, &hdev->rpa); 5659 } else { 5660 hci_copy_identity_address(hdev, 5661 &conn->init_addr, 5662 &conn->init_addr_type); 5663 } 5664 } 5665 } else { 5666 cancel_delayed_work(&conn->le_conn_timeout); 5667 } 5668 5669 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5670 * Processing it more than once per connection can corrupt kernel memory. 5671 * 5672 * As the connection handle is set here for the first time, it indicates 5673 * whether the connection is already set up. 5674 */ 5675 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5676 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5677 goto unlock; 5678 } 5679 5680 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5681 5682 /* Lookup the identity address from the stored connection 5683 * address and address type. 5684 * 5685 * When establishing connections to an identity address, the 5686 * connection procedure will store the resolvable random 5687 * address first. Now if it can be converted back into the 5688 * identity address, start using the identity address from 5689 * now on. 5690 */ 5691 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5692 if (irk) { 5693 bacpy(&conn->dst, &irk->bdaddr); 5694 conn->dst_type = irk->addr_type; 5695 } 5696 5697 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5698 5699 /* All connection failure handling is taken care of by the 5700 * hci_conn_failed function which is triggered by the HCI 5701 * request completion callbacks used for connecting. 5702 */ 5703 if (status || hci_conn_set_handle(conn, handle)) 5704 goto unlock; 5705 5706 /* Drop the connection if it has been aborted */ 5707 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5708 hci_conn_drop(conn); 5709 goto unlock; 5710 } 5711 5712 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5713 addr_type = BDADDR_LE_PUBLIC; 5714 else 5715 addr_type = BDADDR_LE_RANDOM; 5716 5717 /* Drop the connection if the device is blocked */ 5718 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5719 hci_conn_drop(conn); 5720 goto unlock; 5721 } 5722 5723 mgmt_device_connected(hdev, conn, NULL, 0); 5724 5725 conn->sec_level = BT_SECURITY_LOW; 5726 conn->state = BT_CONFIG; 5727 5728 /* Store current advertising instance as connection advertising instance 5729 * when sotfware rotation is in use so it can be re-enabled when 5730 * disconnected. 5731 */ 5732 if (!ext_adv_capable(hdev)) 5733 conn->adv_instance = hdev->cur_adv_instance; 5734 5735 conn->le_conn_interval = interval; 5736 conn->le_conn_latency = latency; 5737 conn->le_supv_timeout = supervision_timeout; 5738 5739 hci_debugfs_create_conn(conn); 5740 hci_conn_add_sysfs(conn); 5741 5742 /* The remote features procedure is defined for central 5743 * role only. So only in case of an initiated connection 5744 * request the remote features. 5745 * 5746 * If the local controller supports peripheral-initiated features 5747 * exchange, then requesting the remote features in peripheral 5748 * role is possible. Otherwise just transition into the 5749 * connected state without requesting the remote features. 5750 */ 5751 if (conn->out || 5752 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5753 struct hci_cp_le_read_remote_features cp; 5754 5755 cp.handle = __cpu_to_le16(conn->handle); 5756 5757 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5758 sizeof(cp), &cp); 5759 5760 hci_conn_hold(conn); 5761 } else { 5762 conn->state = BT_CONNECTED; 5763 hci_connect_cfm(conn, status); 5764 } 5765 5766 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5767 conn->dst_type); 5768 if (params) { 5769 hci_pend_le_list_del_init(params); 5770 if (params->conn) { 5771 hci_conn_drop(params->conn); 5772 hci_conn_put(params->conn); 5773 params->conn = NULL; 5774 } 5775 } 5776 5777 unlock: 5778 hci_update_passive_scan(hdev); 5779 hci_dev_unlock(hdev); 5780 } 5781 5782 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5783 struct sk_buff *skb) 5784 { 5785 struct hci_ev_le_conn_complete *ev = data; 5786 5787 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5788 5789 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5790 NULL, ev->role, le16_to_cpu(ev->handle), 5791 le16_to_cpu(ev->interval), 5792 le16_to_cpu(ev->latency), 5793 le16_to_cpu(ev->supervision_timeout)); 5794 } 5795 5796 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5797 struct sk_buff *skb) 5798 { 5799 struct hci_ev_le_enh_conn_complete *ev = data; 5800 5801 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5802 5803 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5804 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 5805 le16_to_cpu(ev->interval), 5806 le16_to_cpu(ev->latency), 5807 le16_to_cpu(ev->supervision_timeout)); 5808 } 5809 5810 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 5811 struct sk_buff *skb) 5812 { 5813 struct hci_evt_le_ext_adv_set_term *ev = data; 5814 struct hci_conn *conn; 5815 struct adv_info *adv, *n; 5816 5817 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5818 5819 /* The Bluetooth Core 5.3 specification clearly states that this event 5820 * shall not be sent when the Host disables the advertising set. So in 5821 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 5822 * 5823 * When the Host disables an advertising set, all cleanup is done via 5824 * its command callback and not needed to be duplicated here. 5825 */ 5826 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 5827 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 5828 return; 5829 } 5830 5831 hci_dev_lock(hdev); 5832 5833 adv = hci_find_adv_instance(hdev, ev->handle); 5834 5835 if (ev->status) { 5836 if (!adv) 5837 goto unlock; 5838 5839 /* Remove advertising as it has been terminated */ 5840 hci_remove_adv_instance(hdev, ev->handle); 5841 mgmt_advertising_removed(NULL, hdev, ev->handle); 5842 5843 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 5844 if (adv->enabled) 5845 goto unlock; 5846 } 5847 5848 /* We are no longer advertising, clear HCI_LE_ADV */ 5849 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5850 goto unlock; 5851 } 5852 5853 if (adv) 5854 adv->enabled = false; 5855 5856 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 5857 if (conn) { 5858 /* Store handle in the connection so the correct advertising 5859 * instance can be re-enabled when disconnected. 5860 */ 5861 conn->adv_instance = ev->handle; 5862 5863 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 5864 bacmp(&conn->resp_addr, BDADDR_ANY)) 5865 goto unlock; 5866 5867 if (!ev->handle) { 5868 bacpy(&conn->resp_addr, &hdev->random_addr); 5869 goto unlock; 5870 } 5871 5872 if (adv) 5873 bacpy(&conn->resp_addr, &adv->random_addr); 5874 } 5875 5876 unlock: 5877 hci_dev_unlock(hdev); 5878 } 5879 5880 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 5881 struct sk_buff *skb) 5882 { 5883 struct hci_ev_le_conn_update_complete *ev = data; 5884 struct hci_conn *conn; 5885 5886 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5887 5888 if (ev->status) 5889 return; 5890 5891 hci_dev_lock(hdev); 5892 5893 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5894 if (conn) { 5895 conn->le_conn_interval = le16_to_cpu(ev->interval); 5896 conn->le_conn_latency = le16_to_cpu(ev->latency); 5897 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 5898 } 5899 5900 hci_dev_unlock(hdev); 5901 } 5902 5903 /* This function requires the caller holds hdev->lock */ 5904 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 5905 bdaddr_t *addr, 5906 u8 addr_type, bool addr_resolved, 5907 u8 adv_type, u8 phy, u8 sec_phy) 5908 { 5909 struct hci_conn *conn; 5910 struct hci_conn_params *params; 5911 5912 /* If the event is not connectable don't proceed further */ 5913 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 5914 return NULL; 5915 5916 /* Ignore if the device is blocked or hdev is suspended */ 5917 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 5918 hdev->suspended) 5919 return NULL; 5920 5921 /* Most controller will fail if we try to create new connections 5922 * while we have an existing one in peripheral role. 5923 */ 5924 if (hdev->conn_hash.le_num_peripheral > 0 && 5925 (test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) || 5926 !(hdev->le_states[3] & 0x10))) 5927 return NULL; 5928 5929 /* If we're not connectable only connect devices that we have in 5930 * our pend_le_conns list. 5931 */ 5932 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 5933 addr_type); 5934 if (!params) 5935 return NULL; 5936 5937 if (!params->explicit_connect) { 5938 switch (params->auto_connect) { 5939 case HCI_AUTO_CONN_DIRECT: 5940 /* Only devices advertising with ADV_DIRECT_IND are 5941 * triggering a connection attempt. This is allowing 5942 * incoming connections from peripheral devices. 5943 */ 5944 if (adv_type != LE_ADV_DIRECT_IND) 5945 return NULL; 5946 break; 5947 case HCI_AUTO_CONN_ALWAYS: 5948 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 5949 * are triggering a connection attempt. This means 5950 * that incoming connections from peripheral device are 5951 * accepted and also outgoing connections to peripheral 5952 * devices are established when found. 5953 */ 5954 break; 5955 default: 5956 return NULL; 5957 } 5958 } 5959 5960 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 5961 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 5962 HCI_ROLE_MASTER, phy, sec_phy); 5963 if (!IS_ERR(conn)) { 5964 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 5965 * by higher layer that tried to connect, if no then 5966 * store the pointer since we don't really have any 5967 * other owner of the object besides the params that 5968 * triggered it. This way we can abort the connection if 5969 * the parameters get removed and keep the reference 5970 * count consistent once the connection is established. 5971 */ 5972 5973 if (!params->explicit_connect) 5974 params->conn = hci_conn_get(conn); 5975 5976 return conn; 5977 } 5978 5979 switch (PTR_ERR(conn)) { 5980 case -EBUSY: 5981 /* If hci_connect() returns -EBUSY it means there is already 5982 * an LE connection attempt going on. Since controllers don't 5983 * support more than one connection attempt at the time, we 5984 * don't consider this an error case. 5985 */ 5986 break; 5987 default: 5988 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 5989 return NULL; 5990 } 5991 5992 return NULL; 5993 } 5994 5995 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 5996 u8 bdaddr_type, bdaddr_t *direct_addr, 5997 u8 direct_addr_type, u8 phy, u8 sec_phy, s8 rssi, 5998 u8 *data, u8 len, bool ext_adv, bool ctl_time, 5999 u64 instant) 6000 { 6001 struct discovery_state *d = &hdev->discovery; 6002 struct smp_irk *irk; 6003 struct hci_conn *conn; 6004 bool match, bdaddr_resolved; 6005 u32 flags; 6006 u8 *ptr; 6007 6008 switch (type) { 6009 case LE_ADV_IND: 6010 case LE_ADV_DIRECT_IND: 6011 case LE_ADV_SCAN_IND: 6012 case LE_ADV_NONCONN_IND: 6013 case LE_ADV_SCAN_RSP: 6014 break; 6015 default: 6016 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6017 "type: 0x%02x", type); 6018 return; 6019 } 6020 6021 if (len > max_adv_len(hdev)) { 6022 bt_dev_err_ratelimited(hdev, 6023 "adv larger than maximum supported"); 6024 return; 6025 } 6026 6027 /* Find the end of the data in case the report contains padded zero 6028 * bytes at the end causing an invalid length value. 6029 * 6030 * When data is NULL, len is 0 so there is no need for extra ptr 6031 * check as 'ptr < data + 0' is already false in such case. 6032 */ 6033 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6034 if (ptr + 1 + *ptr > data + len) 6035 break; 6036 } 6037 6038 /* Adjust for actual length. This handles the case when remote 6039 * device is advertising with incorrect data length. 6040 */ 6041 len = ptr - data; 6042 6043 /* If the direct address is present, then this report is from 6044 * a LE Direct Advertising Report event. In that case it is 6045 * important to see if the address is matching the local 6046 * controller address. 6047 */ 6048 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6049 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6050 &bdaddr_resolved); 6051 6052 /* Only resolvable random addresses are valid for these 6053 * kind of reports and others can be ignored. 6054 */ 6055 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6056 return; 6057 6058 /* If the controller is not using resolvable random 6059 * addresses, then this report can be ignored. 6060 */ 6061 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6062 return; 6063 6064 /* If the local IRK of the controller does not match 6065 * with the resolvable random address provided, then 6066 * this report can be ignored. 6067 */ 6068 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6069 return; 6070 } 6071 6072 /* Check if we need to convert to identity address */ 6073 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6074 if (irk) { 6075 bdaddr = &irk->bdaddr; 6076 bdaddr_type = irk->addr_type; 6077 } 6078 6079 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6080 6081 /* Check if we have been requested to connect to this device. 6082 * 6083 * direct_addr is set only for directed advertising reports (it is NULL 6084 * for advertising reports) and is already verified to be RPA above. 6085 */ 6086 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6087 type, phy, sec_phy); 6088 if (!ext_adv && conn && type == LE_ADV_IND && 6089 len <= max_adv_len(hdev)) { 6090 /* Store report for later inclusion by 6091 * mgmt_device_connected 6092 */ 6093 memcpy(conn->le_adv_data, data, len); 6094 conn->le_adv_data_len = len; 6095 } 6096 6097 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6098 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6099 else 6100 flags = 0; 6101 6102 /* All scan results should be sent up for Mesh systems */ 6103 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6104 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6105 rssi, flags, data, len, NULL, 0, instant); 6106 return; 6107 } 6108 6109 /* Passive scanning shouldn't trigger any device found events, 6110 * except for devices marked as CONN_REPORT for which we do send 6111 * device found events, or advertisement monitoring requested. 6112 */ 6113 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6114 if (type == LE_ADV_DIRECT_IND) 6115 return; 6116 6117 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6118 bdaddr, bdaddr_type) && 6119 idr_is_empty(&hdev->adv_monitors_idr)) 6120 return; 6121 6122 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6123 rssi, flags, data, len, NULL, 0, 0); 6124 return; 6125 } 6126 6127 /* When receiving a scan response, then there is no way to 6128 * know if the remote device is connectable or not. However 6129 * since scan responses are merged with a previously seen 6130 * advertising report, the flags field from that report 6131 * will be used. 6132 * 6133 * In the unlikely case that a controller just sends a scan 6134 * response event that doesn't match the pending report, then 6135 * it is marked as a standalone SCAN_RSP. 6136 */ 6137 if (type == LE_ADV_SCAN_RSP) 6138 flags = MGMT_DEV_FOUND_SCAN_RSP; 6139 6140 /* If there's nothing pending either store the data from this 6141 * event or send an immediate device found event if the data 6142 * should not be stored for later. 6143 */ 6144 if (!ext_adv && !has_pending_adv_report(hdev)) { 6145 /* If the report will trigger a SCAN_REQ store it for 6146 * later merging. 6147 */ 6148 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6149 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6150 rssi, flags, data, len); 6151 return; 6152 } 6153 6154 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6155 rssi, flags, data, len, NULL, 0, 0); 6156 return; 6157 } 6158 6159 /* Check if the pending report is for the same device as the new one */ 6160 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6161 bdaddr_type == d->last_adv_addr_type); 6162 6163 /* If the pending data doesn't match this report or this isn't a 6164 * scan response (e.g. we got a duplicate ADV_IND) then force 6165 * sending of the pending data. 6166 */ 6167 if (type != LE_ADV_SCAN_RSP || !match) { 6168 /* Send out whatever is in the cache, but skip duplicates */ 6169 if (!match) 6170 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6171 d->last_adv_addr_type, NULL, 6172 d->last_adv_rssi, d->last_adv_flags, 6173 d->last_adv_data, 6174 d->last_adv_data_len, NULL, 0, 0); 6175 6176 /* If the new report will trigger a SCAN_REQ store it for 6177 * later merging. 6178 */ 6179 if (!ext_adv && (type == LE_ADV_IND || 6180 type == LE_ADV_SCAN_IND)) { 6181 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6182 rssi, flags, data, len); 6183 return; 6184 } 6185 6186 /* The advertising reports cannot be merged, so clear 6187 * the pending report and send out a device found event. 6188 */ 6189 clear_pending_adv_report(hdev); 6190 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6191 rssi, flags, data, len, NULL, 0, 0); 6192 return; 6193 } 6194 6195 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6196 * the new event is a SCAN_RSP. We can therefore proceed with 6197 * sending a merged device found event. 6198 */ 6199 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6200 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6201 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6202 clear_pending_adv_report(hdev); 6203 } 6204 6205 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6206 struct sk_buff *skb) 6207 { 6208 struct hci_ev_le_advertising_report *ev = data; 6209 u64 instant = jiffies; 6210 6211 if (!ev->num) 6212 return; 6213 6214 hci_dev_lock(hdev); 6215 6216 while (ev->num--) { 6217 struct hci_ev_le_advertising_info *info; 6218 s8 rssi; 6219 6220 info = hci_le_ev_skb_pull(hdev, skb, 6221 HCI_EV_LE_ADVERTISING_REPORT, 6222 sizeof(*info)); 6223 if (!info) 6224 break; 6225 6226 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6227 info->length + 1)) 6228 break; 6229 6230 if (info->length <= max_adv_len(hdev)) { 6231 rssi = info->data[info->length]; 6232 process_adv_report(hdev, info->type, &info->bdaddr, 6233 info->bdaddr_type, NULL, 0, 6234 HCI_ADV_PHY_1M, 0, rssi, 6235 info->data, info->length, false, 6236 false, instant); 6237 } else { 6238 bt_dev_err(hdev, "Dropping invalid advertising data"); 6239 } 6240 } 6241 6242 hci_dev_unlock(hdev); 6243 } 6244 6245 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6246 { 6247 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6248 switch (evt_type) { 6249 case LE_LEGACY_ADV_IND: 6250 return LE_ADV_IND; 6251 case LE_LEGACY_ADV_DIRECT_IND: 6252 return LE_ADV_DIRECT_IND; 6253 case LE_LEGACY_ADV_SCAN_IND: 6254 return LE_ADV_SCAN_IND; 6255 case LE_LEGACY_NONCONN_IND: 6256 return LE_ADV_NONCONN_IND; 6257 case LE_LEGACY_SCAN_RSP_ADV: 6258 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6259 return LE_ADV_SCAN_RSP; 6260 } 6261 6262 goto invalid; 6263 } 6264 6265 if (evt_type & LE_EXT_ADV_CONN_IND) { 6266 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6267 return LE_ADV_DIRECT_IND; 6268 6269 return LE_ADV_IND; 6270 } 6271 6272 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6273 return LE_ADV_SCAN_RSP; 6274 6275 if (evt_type & LE_EXT_ADV_SCAN_IND) 6276 return LE_ADV_SCAN_IND; 6277 6278 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6279 evt_type & LE_EXT_ADV_DIRECT_IND) 6280 return LE_ADV_NONCONN_IND; 6281 6282 invalid: 6283 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6284 evt_type); 6285 6286 return LE_ADV_INVALID; 6287 } 6288 6289 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6290 struct sk_buff *skb) 6291 { 6292 struct hci_ev_le_ext_adv_report *ev = data; 6293 u64 instant = jiffies; 6294 6295 if (!ev->num) 6296 return; 6297 6298 hci_dev_lock(hdev); 6299 6300 while (ev->num--) { 6301 struct hci_ev_le_ext_adv_info *info; 6302 u8 legacy_evt_type; 6303 u16 evt_type; 6304 6305 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6306 sizeof(*info)); 6307 if (!info) 6308 break; 6309 6310 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6311 info->length)) 6312 break; 6313 6314 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6315 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6316 6317 if (test_bit(HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_PHY, 6318 &hdev->quirks)) { 6319 info->primary_phy &= 0x1f; 6320 info->secondary_phy &= 0x1f; 6321 } 6322 6323 if (legacy_evt_type != LE_ADV_INVALID) { 6324 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6325 info->bdaddr_type, NULL, 0, 6326 info->primary_phy, 6327 info->secondary_phy, 6328 info->rssi, info->data, info->length, 6329 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6330 false, instant); 6331 } 6332 } 6333 6334 hci_dev_unlock(hdev); 6335 } 6336 6337 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6338 { 6339 struct hci_cp_le_pa_term_sync cp; 6340 6341 memset(&cp, 0, sizeof(cp)); 6342 cp.handle = handle; 6343 6344 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6345 } 6346 6347 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6348 struct sk_buff *skb) 6349 { 6350 struct hci_ev_le_pa_sync_established *ev = data; 6351 int mask = hdev->link_mode; 6352 __u8 flags = 0; 6353 struct hci_conn *pa_sync, *conn; 6354 6355 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6356 6357 hci_dev_lock(hdev); 6358 6359 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6360 6361 conn = hci_conn_hash_lookup_sid(hdev, ev->sid, &ev->bdaddr, 6362 ev->bdaddr_type); 6363 if (!conn) { 6364 bt_dev_err(hdev, 6365 "Unable to find connection for dst %pMR sid 0x%2.2x", 6366 &ev->bdaddr, ev->sid); 6367 goto unlock; 6368 } 6369 6370 clear_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags); 6371 6372 conn->sync_handle = le16_to_cpu(ev->handle); 6373 conn->sid = HCI_SID_INVALID; 6374 6375 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6376 if (!(mask & HCI_LM_ACCEPT)) { 6377 hci_le_pa_term_sync(hdev, ev->handle); 6378 goto unlock; 6379 } 6380 6381 if (!(flags & HCI_PROTO_DEFER)) 6382 goto unlock; 6383 6384 /* Add connection to indicate PA sync event */ 6385 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 6386 HCI_ROLE_SLAVE); 6387 6388 if (IS_ERR(pa_sync)) 6389 goto unlock; 6390 6391 pa_sync->sync_handle = le16_to_cpu(ev->handle); 6392 6393 if (ev->status) { 6394 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6395 6396 /* Notify iso layer */ 6397 hci_connect_cfm(pa_sync, ev->status); 6398 } 6399 6400 unlock: 6401 /* Handle any other pending PA sync command */ 6402 hci_pa_create_sync_pending(hdev); 6403 6404 hci_dev_unlock(hdev); 6405 } 6406 6407 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6408 struct sk_buff *skb) 6409 { 6410 struct hci_ev_le_per_adv_report *ev = data; 6411 int mask = hdev->link_mode; 6412 __u8 flags = 0; 6413 struct hci_conn *pa_sync; 6414 6415 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6416 6417 hci_dev_lock(hdev); 6418 6419 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 6420 if (!(mask & HCI_LM_ACCEPT)) 6421 goto unlock; 6422 6423 if (!(flags & HCI_PROTO_DEFER)) 6424 goto unlock; 6425 6426 pa_sync = hci_conn_hash_lookup_pa_sync_handle 6427 (hdev, 6428 le16_to_cpu(ev->sync_handle)); 6429 6430 if (!pa_sync) 6431 goto unlock; 6432 6433 if (ev->data_status == LE_PA_DATA_COMPLETE && 6434 !test_and_set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags)) { 6435 /* Notify iso layer */ 6436 hci_connect_cfm(pa_sync, 0); 6437 6438 /* Notify MGMT layer */ 6439 mgmt_device_connected(hdev, pa_sync, NULL, 0); 6440 } 6441 6442 unlock: 6443 hci_dev_unlock(hdev); 6444 } 6445 6446 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6447 struct sk_buff *skb) 6448 { 6449 struct hci_ev_le_remote_feat_complete *ev = data; 6450 struct hci_conn *conn; 6451 6452 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6453 6454 hci_dev_lock(hdev); 6455 6456 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6457 if (conn) { 6458 if (!ev->status) 6459 memcpy(conn->features[0], ev->features, 8); 6460 6461 if (conn->state == BT_CONFIG) { 6462 __u8 status; 6463 6464 /* If the local controller supports peripheral-initiated 6465 * features exchange, but the remote controller does 6466 * not, then it is possible that the error code 0x1a 6467 * for unsupported remote feature gets returned. 6468 * 6469 * In this specific case, allow the connection to 6470 * transition into connected state and mark it as 6471 * successful. 6472 */ 6473 if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && 6474 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6475 status = 0x00; 6476 else 6477 status = ev->status; 6478 6479 conn->state = BT_CONNECTED; 6480 hci_connect_cfm(conn, status); 6481 hci_conn_drop(conn); 6482 } 6483 } 6484 6485 hci_dev_unlock(hdev); 6486 } 6487 6488 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6489 struct sk_buff *skb) 6490 { 6491 struct hci_ev_le_ltk_req *ev = data; 6492 struct hci_cp_le_ltk_reply cp; 6493 struct hci_cp_le_ltk_neg_reply neg; 6494 struct hci_conn *conn; 6495 struct smp_ltk *ltk; 6496 6497 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6498 6499 hci_dev_lock(hdev); 6500 6501 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6502 if (conn == NULL) 6503 goto not_found; 6504 6505 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6506 if (!ltk) 6507 goto not_found; 6508 6509 if (smp_ltk_is_sc(ltk)) { 6510 /* With SC both EDiv and Rand are set to zero */ 6511 if (ev->ediv || ev->rand) 6512 goto not_found; 6513 } else { 6514 /* For non-SC keys check that EDiv and Rand match */ 6515 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6516 goto not_found; 6517 } 6518 6519 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6520 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6521 cp.handle = cpu_to_le16(conn->handle); 6522 6523 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6524 6525 conn->enc_key_size = ltk->enc_size; 6526 6527 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6528 6529 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6530 * temporary key used to encrypt a connection following 6531 * pairing. It is used during the Encrypted Session Setup to 6532 * distribute the keys. Later, security can be re-established 6533 * using a distributed LTK. 6534 */ 6535 if (ltk->type == SMP_STK) { 6536 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6537 list_del_rcu(<k->list); 6538 kfree_rcu(ltk, rcu); 6539 } else { 6540 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6541 } 6542 6543 hci_dev_unlock(hdev); 6544 6545 return; 6546 6547 not_found: 6548 neg.handle = ev->handle; 6549 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6550 hci_dev_unlock(hdev); 6551 } 6552 6553 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6554 u8 reason) 6555 { 6556 struct hci_cp_le_conn_param_req_neg_reply cp; 6557 6558 cp.handle = cpu_to_le16(handle); 6559 cp.reason = reason; 6560 6561 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6562 &cp); 6563 } 6564 6565 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6566 struct sk_buff *skb) 6567 { 6568 struct hci_ev_le_remote_conn_param_req *ev = data; 6569 struct hci_cp_le_conn_param_req_reply cp; 6570 struct hci_conn *hcon; 6571 u16 handle, min, max, latency, timeout; 6572 6573 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6574 6575 handle = le16_to_cpu(ev->handle); 6576 min = le16_to_cpu(ev->interval_min); 6577 max = le16_to_cpu(ev->interval_max); 6578 latency = le16_to_cpu(ev->latency); 6579 timeout = le16_to_cpu(ev->timeout); 6580 6581 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6582 if (!hcon || hcon->state != BT_CONNECTED) 6583 return send_conn_param_neg_reply(hdev, handle, 6584 HCI_ERROR_UNKNOWN_CONN_ID); 6585 6586 if (max > hcon->le_conn_max_interval) 6587 return send_conn_param_neg_reply(hdev, handle, 6588 HCI_ERROR_INVALID_LL_PARAMS); 6589 6590 if (hci_check_conn_params(min, max, latency, timeout)) 6591 return send_conn_param_neg_reply(hdev, handle, 6592 HCI_ERROR_INVALID_LL_PARAMS); 6593 6594 if (hcon->role == HCI_ROLE_MASTER) { 6595 struct hci_conn_params *params; 6596 u8 store_hint; 6597 6598 hci_dev_lock(hdev); 6599 6600 params = hci_conn_params_lookup(hdev, &hcon->dst, 6601 hcon->dst_type); 6602 if (params) { 6603 params->conn_min_interval = min; 6604 params->conn_max_interval = max; 6605 params->conn_latency = latency; 6606 params->supervision_timeout = timeout; 6607 store_hint = 0x01; 6608 } else { 6609 store_hint = 0x00; 6610 } 6611 6612 hci_dev_unlock(hdev); 6613 6614 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6615 store_hint, min, max, latency, timeout); 6616 } 6617 6618 cp.handle = ev->handle; 6619 cp.interval_min = ev->interval_min; 6620 cp.interval_max = ev->interval_max; 6621 cp.latency = ev->latency; 6622 cp.timeout = ev->timeout; 6623 cp.min_ce_len = 0; 6624 cp.max_ce_len = 0; 6625 6626 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6627 } 6628 6629 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6630 struct sk_buff *skb) 6631 { 6632 struct hci_ev_le_direct_adv_report *ev = data; 6633 u64 instant = jiffies; 6634 int i; 6635 6636 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6637 flex_array_size(ev, info, ev->num))) 6638 return; 6639 6640 if (!ev->num) 6641 return; 6642 6643 hci_dev_lock(hdev); 6644 6645 for (i = 0; i < ev->num; i++) { 6646 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6647 6648 process_adv_report(hdev, info->type, &info->bdaddr, 6649 info->bdaddr_type, &info->direct_addr, 6650 info->direct_addr_type, HCI_ADV_PHY_1M, 0, 6651 info->rssi, NULL, 0, false, false, instant); 6652 } 6653 6654 hci_dev_unlock(hdev); 6655 } 6656 6657 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6658 struct sk_buff *skb) 6659 { 6660 struct hci_ev_le_phy_update_complete *ev = data; 6661 struct hci_conn *conn; 6662 6663 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6664 6665 if (ev->status) 6666 return; 6667 6668 hci_dev_lock(hdev); 6669 6670 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6671 if (!conn) 6672 goto unlock; 6673 6674 conn->le_tx_phy = ev->tx_phy; 6675 conn->le_rx_phy = ev->rx_phy; 6676 6677 unlock: 6678 hci_dev_unlock(hdev); 6679 } 6680 6681 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6682 struct sk_buff *skb) 6683 { 6684 struct hci_evt_le_cis_established *ev = data; 6685 struct hci_conn *conn; 6686 struct bt_iso_qos *qos; 6687 bool pending = false; 6688 u16 handle = __le16_to_cpu(ev->handle); 6689 u32 c_sdu_interval, p_sdu_interval; 6690 6691 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6692 6693 hci_dev_lock(hdev); 6694 6695 conn = hci_conn_hash_lookup_handle(hdev, handle); 6696 if (!conn) { 6697 bt_dev_err(hdev, 6698 "Unable to find connection with handle 0x%4.4x", 6699 handle); 6700 goto unlock; 6701 } 6702 6703 if (conn->type != ISO_LINK) { 6704 bt_dev_err(hdev, 6705 "Invalid connection link type handle 0x%4.4x", 6706 handle); 6707 goto unlock; 6708 } 6709 6710 qos = &conn->iso_qos; 6711 6712 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6713 6714 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 6, Part G 6715 * page 3075: 6716 * Transport_Latency_C_To_P = CIG_Sync_Delay + (FT_C_To_P) × 6717 * ISO_Interval + SDU_Interval_C_To_P 6718 * ... 6719 * SDU_Interval = (CIG_Sync_Delay + (FT) x ISO_Interval) - 6720 * Transport_Latency 6721 */ 6722 c_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6723 (ev->c_ft * le16_to_cpu(ev->interval) * 1250)) - 6724 get_unaligned_le24(ev->c_latency); 6725 p_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6726 (ev->p_ft * le16_to_cpu(ev->interval) * 1250)) - 6727 get_unaligned_le24(ev->p_latency); 6728 6729 switch (conn->role) { 6730 case HCI_ROLE_SLAVE: 6731 qos->ucast.in.interval = c_sdu_interval; 6732 qos->ucast.out.interval = p_sdu_interval; 6733 /* Convert Transport Latency (us) to Latency (msec) */ 6734 qos->ucast.in.latency = 6735 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6736 1000); 6737 qos->ucast.out.latency = 6738 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6739 1000); 6740 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6741 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6742 qos->ucast.in.phy = ev->c_phy; 6743 qos->ucast.out.phy = ev->p_phy; 6744 break; 6745 case HCI_ROLE_MASTER: 6746 qos->ucast.in.interval = p_sdu_interval; 6747 qos->ucast.out.interval = c_sdu_interval; 6748 /* Convert Transport Latency (us) to Latency (msec) */ 6749 qos->ucast.out.latency = 6750 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6751 1000); 6752 qos->ucast.in.latency = 6753 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6754 1000); 6755 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6756 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6757 qos->ucast.out.phy = ev->c_phy; 6758 qos->ucast.in.phy = ev->p_phy; 6759 break; 6760 } 6761 6762 if (!ev->status) { 6763 conn->state = BT_CONNECTED; 6764 hci_debugfs_create_conn(conn); 6765 hci_conn_add_sysfs(conn); 6766 hci_iso_setup_path(conn); 6767 goto unlock; 6768 } 6769 6770 conn->state = BT_CLOSED; 6771 hci_connect_cfm(conn, ev->status); 6772 hci_conn_del(conn); 6773 6774 unlock: 6775 if (pending) 6776 hci_le_create_cis_pending(hdev); 6777 6778 hci_dev_unlock(hdev); 6779 } 6780 6781 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6782 { 6783 struct hci_cp_le_reject_cis cp; 6784 6785 memset(&cp, 0, sizeof(cp)); 6786 cp.handle = handle; 6787 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6788 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6789 } 6790 6791 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6792 { 6793 struct hci_cp_le_accept_cis cp; 6794 6795 memset(&cp, 0, sizeof(cp)); 6796 cp.handle = handle; 6797 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6798 } 6799 6800 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6801 struct sk_buff *skb) 6802 { 6803 struct hci_evt_le_cis_req *ev = data; 6804 u16 acl_handle, cis_handle; 6805 struct hci_conn *acl, *cis; 6806 int mask; 6807 __u8 flags = 0; 6808 6809 acl_handle = __le16_to_cpu(ev->acl_handle); 6810 cis_handle = __le16_to_cpu(ev->cis_handle); 6811 6812 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6813 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6814 6815 hci_dev_lock(hdev); 6816 6817 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6818 if (!acl) 6819 goto unlock; 6820 6821 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 6822 if (!(mask & HCI_LM_ACCEPT)) { 6823 hci_le_reject_cis(hdev, ev->cis_handle); 6824 goto unlock; 6825 } 6826 6827 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6828 if (!cis) { 6829 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE, 6830 cis_handle); 6831 if (IS_ERR(cis)) { 6832 hci_le_reject_cis(hdev, ev->cis_handle); 6833 goto unlock; 6834 } 6835 } 6836 6837 cis->iso_qos.ucast.cig = ev->cig_id; 6838 cis->iso_qos.ucast.cis = ev->cis_id; 6839 6840 if (!(flags & HCI_PROTO_DEFER)) { 6841 hci_le_accept_cis(hdev, ev->cis_handle); 6842 } else { 6843 cis->state = BT_CONNECT2; 6844 hci_connect_cfm(cis, 0); 6845 } 6846 6847 unlock: 6848 hci_dev_unlock(hdev); 6849 } 6850 6851 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 6852 { 6853 u8 handle = PTR_UINT(data); 6854 6855 return hci_le_terminate_big_sync(hdev, handle, 6856 HCI_ERROR_LOCAL_HOST_TERM); 6857 } 6858 6859 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6860 struct sk_buff *skb) 6861 { 6862 struct hci_evt_le_create_big_complete *ev = data; 6863 struct hci_conn *conn; 6864 __u8 i = 0; 6865 6866 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6867 6868 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6869 flex_array_size(ev, bis_handle, ev->num_bis))) 6870 return; 6871 6872 hci_dev_lock(hdev); 6873 rcu_read_lock(); 6874 6875 /* Connect all BISes that are bound to the BIG */ 6876 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) { 6877 if (bacmp(&conn->dst, BDADDR_ANY) || 6878 conn->type != ISO_LINK || 6879 conn->iso_qos.bcast.big != ev->handle) 6880 continue; 6881 6882 if (hci_conn_set_handle(conn, 6883 __le16_to_cpu(ev->bis_handle[i++]))) 6884 continue; 6885 6886 if (!ev->status) { 6887 conn->state = BT_CONNECTED; 6888 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 6889 rcu_read_unlock(); 6890 hci_debugfs_create_conn(conn); 6891 hci_conn_add_sysfs(conn); 6892 hci_iso_setup_path(conn); 6893 rcu_read_lock(); 6894 continue; 6895 } 6896 6897 hci_connect_cfm(conn, ev->status); 6898 rcu_read_unlock(); 6899 hci_conn_del(conn); 6900 rcu_read_lock(); 6901 } 6902 6903 rcu_read_unlock(); 6904 6905 if (!ev->status && !i) 6906 /* If no BISes have been connected for the BIG, 6907 * terminate. This is in case all bound connections 6908 * have been closed before the BIG creation 6909 * has completed. 6910 */ 6911 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 6912 UINT_PTR(ev->handle), NULL); 6913 6914 hci_dev_unlock(hdev); 6915 } 6916 6917 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6918 struct sk_buff *skb) 6919 { 6920 struct hci_evt_le_big_sync_estabilished *ev = data; 6921 struct hci_conn *bis, *conn; 6922 int i; 6923 6924 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6925 6926 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 6927 flex_array_size(ev, bis, ev->num_bis))) 6928 return; 6929 6930 hci_dev_lock(hdev); 6931 6932 conn = hci_conn_hash_lookup_big_sync_pend(hdev, ev->handle, 6933 ev->num_bis); 6934 if (!conn) { 6935 bt_dev_err(hdev, 6936 "Unable to find connection for big 0x%2.2x", 6937 ev->handle); 6938 goto unlock; 6939 } 6940 6941 clear_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags); 6942 6943 conn->num_bis = 0; 6944 memset(conn->bis, 0, sizeof(conn->num_bis)); 6945 6946 for (i = 0; i < ev->num_bis; i++) { 6947 u16 handle = le16_to_cpu(ev->bis[i]); 6948 __le32 interval; 6949 6950 bis = hci_conn_hash_lookup_handle(hdev, handle); 6951 if (!bis) { 6952 if (handle > HCI_CONN_HANDLE_MAX) { 6953 bt_dev_dbg(hdev, "ignore too large handle %u", handle); 6954 continue; 6955 } 6956 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 6957 HCI_ROLE_SLAVE, handle); 6958 if (IS_ERR(bis)) 6959 continue; 6960 } 6961 6962 if (ev->status != 0x42) 6963 /* Mark PA sync as established */ 6964 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 6965 6966 bis->sync_handle = conn->sync_handle; 6967 bis->iso_qos.bcast.big = ev->handle; 6968 memset(&interval, 0, sizeof(interval)); 6969 memcpy(&interval, ev->latency, sizeof(ev->latency)); 6970 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 6971 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 6972 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 6973 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 6974 6975 if (!ev->status) { 6976 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 6977 hci_iso_setup_path(bis); 6978 } 6979 } 6980 6981 /* In case BIG sync failed, notify each failed connection to 6982 * the user after all hci connections have been added 6983 */ 6984 if (ev->status) 6985 for (i = 0; i < ev->num_bis; i++) { 6986 u16 handle = le16_to_cpu(ev->bis[i]); 6987 6988 bis = hci_conn_hash_lookup_handle(hdev, handle); 6989 if (!bis) 6990 continue; 6991 6992 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 6993 hci_connect_cfm(bis, ev->status); 6994 } 6995 6996 unlock: 6997 /* Handle any other pending BIG sync command */ 6998 hci_le_big_create_sync_pending(hdev); 6999 7000 hci_dev_unlock(hdev); 7001 } 7002 7003 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7004 struct sk_buff *skb) 7005 { 7006 struct hci_evt_le_big_info_adv_report *ev = data; 7007 int mask = hdev->link_mode; 7008 __u8 flags = 0; 7009 struct hci_conn *pa_sync; 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 goto unlock; 7018 7019 if (!(flags & HCI_PROTO_DEFER)) 7020 goto unlock; 7021 7022 pa_sync = hci_conn_hash_lookup_pa_sync_handle 7023 (hdev, 7024 le16_to_cpu(ev->sync_handle)); 7025 7026 if (!pa_sync) 7027 goto unlock; 7028 7029 pa_sync->iso_qos.bcast.encryption = ev->encryption; 7030 7031 /* Notify iso layer */ 7032 hci_connect_cfm(pa_sync, 0); 7033 7034 unlock: 7035 hci_dev_unlock(hdev); 7036 } 7037 7038 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7039 [_op] = { \ 7040 .func = _func, \ 7041 .min_len = _min_len, \ 7042 .max_len = _max_len, \ 7043 } 7044 7045 #define HCI_LE_EV(_op, _func, _len) \ 7046 HCI_LE_EV_VL(_op, _func, _len, _len) 7047 7048 #define HCI_LE_EV_STATUS(_op, _func) \ 7049 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7050 7051 /* Entries in this table shall have their position according to the subevent 7052 * opcode they handle so the use of the macros above is recommend since it does 7053 * attempt to initialize at its proper index using Designated Initializers that 7054 * way events without a callback function can be ommited. 7055 */ 7056 static const struct hci_le_ev { 7057 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7058 u16 min_len; 7059 u16 max_len; 7060 } hci_le_ev_table[U8_MAX + 1] = { 7061 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7062 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7063 sizeof(struct hci_ev_le_conn_complete)), 7064 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7065 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7066 sizeof(struct hci_ev_le_advertising_report), 7067 HCI_MAX_EVENT_SIZE), 7068 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7069 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7070 hci_le_conn_update_complete_evt, 7071 sizeof(struct hci_ev_le_conn_update_complete)), 7072 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7073 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7074 hci_le_remote_feat_complete_evt, 7075 sizeof(struct hci_ev_le_remote_feat_complete)), 7076 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7077 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7078 sizeof(struct hci_ev_le_ltk_req)), 7079 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7080 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7081 hci_le_remote_conn_param_req_evt, 7082 sizeof(struct hci_ev_le_remote_conn_param_req)), 7083 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7084 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7085 hci_le_enh_conn_complete_evt, 7086 sizeof(struct hci_ev_le_enh_conn_complete)), 7087 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7088 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7089 sizeof(struct hci_ev_le_direct_adv_report), 7090 HCI_MAX_EVENT_SIZE), 7091 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7092 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7093 sizeof(struct hci_ev_le_phy_update_complete)), 7094 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7095 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7096 sizeof(struct hci_ev_le_ext_adv_report), 7097 HCI_MAX_EVENT_SIZE), 7098 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7099 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7100 hci_le_pa_sync_estabilished_evt, 7101 sizeof(struct hci_ev_le_pa_sync_established)), 7102 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7103 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7104 hci_le_per_adv_report_evt, 7105 sizeof(struct hci_ev_le_per_adv_report), 7106 HCI_MAX_EVENT_SIZE), 7107 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7108 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7109 sizeof(struct hci_evt_le_ext_adv_set_term)), 7110 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7111 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7112 sizeof(struct hci_evt_le_cis_established)), 7113 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7114 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7115 sizeof(struct hci_evt_le_cis_req)), 7116 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7117 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7118 hci_le_create_big_complete_evt, 7119 sizeof(struct hci_evt_le_create_big_complete), 7120 HCI_MAX_EVENT_SIZE), 7121 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7122 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7123 hci_le_big_sync_established_evt, 7124 sizeof(struct hci_evt_le_big_sync_estabilished), 7125 HCI_MAX_EVENT_SIZE), 7126 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7127 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7128 hci_le_big_info_adv_report_evt, 7129 sizeof(struct hci_evt_le_big_info_adv_report), 7130 HCI_MAX_EVENT_SIZE), 7131 }; 7132 7133 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7134 struct sk_buff *skb, u16 *opcode, u8 *status, 7135 hci_req_complete_t *req_complete, 7136 hci_req_complete_skb_t *req_complete_skb) 7137 { 7138 struct hci_ev_le_meta *ev = data; 7139 const struct hci_le_ev *subev; 7140 7141 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7142 7143 /* Only match event if command OGF is for LE */ 7144 if (hdev->req_skb && 7145 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 && 7146 hci_skb_event(hdev->req_skb) == ev->subevent) { 7147 *opcode = hci_skb_opcode(hdev->req_skb); 7148 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7149 req_complete_skb); 7150 } 7151 7152 subev = &hci_le_ev_table[ev->subevent]; 7153 if (!subev->func) 7154 return; 7155 7156 if (skb->len < subev->min_len) { 7157 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7158 ev->subevent, skb->len, subev->min_len); 7159 return; 7160 } 7161 7162 /* Just warn if the length is over max_len size it still be 7163 * possible to partially parse the event so leave to callback to 7164 * decide if that is acceptable. 7165 */ 7166 if (skb->len > subev->max_len) 7167 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7168 ev->subevent, skb->len, subev->max_len); 7169 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7170 if (!data) 7171 return; 7172 7173 subev->func(hdev, data, skb); 7174 } 7175 7176 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7177 u8 event, struct sk_buff *skb) 7178 { 7179 struct hci_ev_cmd_complete *ev; 7180 struct hci_event_hdr *hdr; 7181 7182 if (!skb) 7183 return false; 7184 7185 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7186 if (!hdr) 7187 return false; 7188 7189 if (event) { 7190 if (hdr->evt != event) 7191 return false; 7192 return true; 7193 } 7194 7195 /* Check if request ended in Command Status - no way to retrieve 7196 * any extra parameters in this case. 7197 */ 7198 if (hdr->evt == HCI_EV_CMD_STATUS) 7199 return false; 7200 7201 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7202 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7203 hdr->evt); 7204 return false; 7205 } 7206 7207 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7208 if (!ev) 7209 return false; 7210 7211 if (opcode != __le16_to_cpu(ev->opcode)) { 7212 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7213 __le16_to_cpu(ev->opcode)); 7214 return false; 7215 } 7216 7217 return true; 7218 } 7219 7220 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7221 struct sk_buff *skb) 7222 { 7223 struct hci_ev_le_advertising_info *adv; 7224 struct hci_ev_le_direct_adv_info *direct_adv; 7225 struct hci_ev_le_ext_adv_info *ext_adv; 7226 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7227 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7228 7229 hci_dev_lock(hdev); 7230 7231 /* If we are currently suspended and this is the first BT event seen, 7232 * save the wake reason associated with the event. 7233 */ 7234 if (!hdev->suspended || hdev->wake_reason) 7235 goto unlock; 7236 7237 /* Default to remote wake. Values for wake_reason are documented in the 7238 * Bluez mgmt api docs. 7239 */ 7240 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7241 7242 /* Once configured for remote wakeup, we should only wake up for 7243 * reconnections. It's useful to see which device is waking us up so 7244 * keep track of the bdaddr of the connection event that woke us up. 7245 */ 7246 if (event == HCI_EV_CONN_REQUEST) { 7247 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7248 hdev->wake_addr_type = BDADDR_BREDR; 7249 } else if (event == HCI_EV_CONN_COMPLETE) { 7250 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7251 hdev->wake_addr_type = BDADDR_BREDR; 7252 } else if (event == HCI_EV_LE_META) { 7253 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7254 u8 subevent = le_ev->subevent; 7255 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7256 u8 num_reports = *ptr; 7257 7258 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7259 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7260 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7261 num_reports) { 7262 adv = (void *)(ptr + 1); 7263 direct_adv = (void *)(ptr + 1); 7264 ext_adv = (void *)(ptr + 1); 7265 7266 switch (subevent) { 7267 case HCI_EV_LE_ADVERTISING_REPORT: 7268 bacpy(&hdev->wake_addr, &adv->bdaddr); 7269 hdev->wake_addr_type = adv->bdaddr_type; 7270 break; 7271 case HCI_EV_LE_DIRECT_ADV_REPORT: 7272 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7273 hdev->wake_addr_type = direct_adv->bdaddr_type; 7274 break; 7275 case HCI_EV_LE_EXT_ADV_REPORT: 7276 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7277 hdev->wake_addr_type = ext_adv->bdaddr_type; 7278 break; 7279 } 7280 } 7281 } else { 7282 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7283 } 7284 7285 unlock: 7286 hci_dev_unlock(hdev); 7287 } 7288 7289 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7290 [_op] = { \ 7291 .req = false, \ 7292 .func = _func, \ 7293 .min_len = _min_len, \ 7294 .max_len = _max_len, \ 7295 } 7296 7297 #define HCI_EV(_op, _func, _len) \ 7298 HCI_EV_VL(_op, _func, _len, _len) 7299 7300 #define HCI_EV_STATUS(_op, _func) \ 7301 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7302 7303 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7304 [_op] = { \ 7305 .req = true, \ 7306 .func_req = _func, \ 7307 .min_len = _min_len, \ 7308 .max_len = _max_len, \ 7309 } 7310 7311 #define HCI_EV_REQ(_op, _func, _len) \ 7312 HCI_EV_REQ_VL(_op, _func, _len, _len) 7313 7314 /* Entries in this table shall have their position according to the event opcode 7315 * they handle so the use of the macros above is recommend since it does attempt 7316 * to initialize at its proper index using Designated Initializers that way 7317 * events without a callback function don't have entered. 7318 */ 7319 static const struct hci_ev { 7320 bool req; 7321 union { 7322 void (*func)(struct hci_dev *hdev, void *data, 7323 struct sk_buff *skb); 7324 void (*func_req)(struct hci_dev *hdev, void *data, 7325 struct sk_buff *skb, u16 *opcode, u8 *status, 7326 hci_req_complete_t *req_complete, 7327 hci_req_complete_skb_t *req_complete_skb); 7328 }; 7329 u16 min_len; 7330 u16 max_len; 7331 } hci_ev_table[U8_MAX + 1] = { 7332 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7333 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7334 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7335 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7336 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7337 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7338 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7339 sizeof(struct hci_ev_conn_complete)), 7340 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7341 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7342 sizeof(struct hci_ev_conn_request)), 7343 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7344 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7345 sizeof(struct hci_ev_disconn_complete)), 7346 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7347 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7348 sizeof(struct hci_ev_auth_complete)), 7349 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7350 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7351 sizeof(struct hci_ev_remote_name)), 7352 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7353 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7354 sizeof(struct hci_ev_encrypt_change)), 7355 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7356 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7357 hci_change_link_key_complete_evt, 7358 sizeof(struct hci_ev_change_link_key_complete)), 7359 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7360 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7361 sizeof(struct hci_ev_remote_features)), 7362 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7363 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7364 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7365 /* [0x0f = HCI_EV_CMD_STATUS] */ 7366 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7367 sizeof(struct hci_ev_cmd_status)), 7368 /* [0x10 = HCI_EV_CMD_STATUS] */ 7369 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7370 sizeof(struct hci_ev_hardware_error)), 7371 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7372 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7373 sizeof(struct hci_ev_role_change)), 7374 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7375 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7376 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7377 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7378 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7379 sizeof(struct hci_ev_mode_change)), 7380 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7381 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7382 sizeof(struct hci_ev_pin_code_req)), 7383 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7384 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7385 sizeof(struct hci_ev_link_key_req)), 7386 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7387 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7388 sizeof(struct hci_ev_link_key_notify)), 7389 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7390 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7391 sizeof(struct hci_ev_clock_offset)), 7392 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7393 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7394 sizeof(struct hci_ev_pkt_type_change)), 7395 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7396 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7397 sizeof(struct hci_ev_pscan_rep_mode)), 7398 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7399 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7400 hci_inquiry_result_with_rssi_evt, 7401 sizeof(struct hci_ev_inquiry_result_rssi), 7402 HCI_MAX_EVENT_SIZE), 7403 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7404 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7405 sizeof(struct hci_ev_remote_ext_features)), 7406 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7407 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7408 sizeof(struct hci_ev_sync_conn_complete)), 7409 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7410 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7411 hci_extended_inquiry_result_evt, 7412 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7413 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7414 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7415 sizeof(struct hci_ev_key_refresh_complete)), 7416 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7417 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7418 sizeof(struct hci_ev_io_capa_request)), 7419 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7420 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7421 sizeof(struct hci_ev_io_capa_reply)), 7422 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7423 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7424 sizeof(struct hci_ev_user_confirm_req)), 7425 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7426 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7427 sizeof(struct hci_ev_user_passkey_req)), 7428 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7429 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7430 sizeof(struct hci_ev_remote_oob_data_request)), 7431 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7432 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7433 sizeof(struct hci_ev_simple_pair_complete)), 7434 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7435 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7436 sizeof(struct hci_ev_user_passkey_notify)), 7437 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7438 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7439 sizeof(struct hci_ev_keypress_notify)), 7440 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7441 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7442 sizeof(struct hci_ev_remote_host_features)), 7443 /* [0x3e = HCI_EV_LE_META] */ 7444 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7445 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7446 /* [0xff = HCI_EV_VENDOR] */ 7447 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7448 }; 7449 7450 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7451 u16 *opcode, u8 *status, 7452 hci_req_complete_t *req_complete, 7453 hci_req_complete_skb_t *req_complete_skb) 7454 { 7455 const struct hci_ev *ev = &hci_ev_table[event]; 7456 void *data; 7457 7458 if (!ev->func) 7459 return; 7460 7461 if (skb->len < ev->min_len) { 7462 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7463 event, skb->len, ev->min_len); 7464 return; 7465 } 7466 7467 /* Just warn if the length is over max_len size it still be 7468 * possible to partially parse the event so leave to callback to 7469 * decide if that is acceptable. 7470 */ 7471 if (skb->len > ev->max_len) 7472 bt_dev_warn_ratelimited(hdev, 7473 "unexpected event 0x%2.2x length: %u > %u", 7474 event, skb->len, ev->max_len); 7475 7476 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7477 if (!data) 7478 return; 7479 7480 if (ev->req) 7481 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7482 req_complete_skb); 7483 else 7484 ev->func(hdev, data, skb); 7485 } 7486 7487 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7488 { 7489 struct hci_event_hdr *hdr = (void *) skb->data; 7490 hci_req_complete_t req_complete = NULL; 7491 hci_req_complete_skb_t req_complete_skb = NULL; 7492 struct sk_buff *orig_skb = NULL; 7493 u8 status = 0, event, req_evt = 0; 7494 u16 opcode = HCI_OP_NOP; 7495 7496 if (skb->len < sizeof(*hdr)) { 7497 bt_dev_err(hdev, "Malformed HCI Event"); 7498 goto done; 7499 } 7500 7501 kfree_skb(hdev->recv_event); 7502 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7503 7504 event = hdr->evt; 7505 if (!event) { 7506 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7507 event); 7508 goto done; 7509 } 7510 7511 /* Only match event if command OGF is not for LE */ 7512 if (hdev->req_skb && 7513 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && 7514 hci_skb_event(hdev->req_skb) == event) { 7515 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), 7516 status, &req_complete, &req_complete_skb); 7517 req_evt = event; 7518 } 7519 7520 /* If it looks like we might end up having to call 7521 * req_complete_skb, store a pristine copy of the skb since the 7522 * various handlers may modify the original one through 7523 * skb_pull() calls, etc. 7524 */ 7525 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7526 event == HCI_EV_CMD_COMPLETE) 7527 orig_skb = skb_clone(skb, GFP_KERNEL); 7528 7529 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7530 7531 /* Store wake reason if we're suspended */ 7532 hci_store_wake_reason(hdev, event, skb); 7533 7534 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7535 7536 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7537 &req_complete_skb); 7538 7539 if (req_complete) { 7540 req_complete(hdev, status, opcode); 7541 } else if (req_complete_skb) { 7542 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7543 kfree_skb(orig_skb); 7544 orig_skb = NULL; 7545 } 7546 req_complete_skb(hdev, status, opcode, orig_skb); 7547 } 7548 7549 done: 7550 kfree_skb(orig_skb); 7551 kfree_skb(skb); 7552 hdev->stat.evt_rx++; 7553 } 7554