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 /* Set the default Authenticated Payload Timeout after 3628 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3629 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3630 * sent when the link is active and Encryption is enabled, the conn 3631 * type can be either LE or ACL and controller must support LMP Ping. 3632 * Ensure for AES-CCM encryption as well. 3633 */ 3634 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3635 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3636 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3637 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3638 struct hci_cp_write_auth_payload_to cp; 3639 3640 cp.handle = cpu_to_le16(conn->handle); 3641 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3642 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3643 sizeof(cp), &cp)) 3644 bt_dev_err(hdev, "write auth payload timeout failed"); 3645 } 3646 3647 notify: 3648 hci_encrypt_cfm(conn, ev->status); 3649 3650 unlock: 3651 hci_dev_unlock(hdev); 3652 } 3653 3654 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3655 struct sk_buff *skb) 3656 { 3657 struct hci_ev_change_link_key_complete *ev = data; 3658 struct hci_conn *conn; 3659 3660 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3661 3662 hci_dev_lock(hdev); 3663 3664 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3665 if (conn) { 3666 if (!ev->status) 3667 set_bit(HCI_CONN_SECURE, &conn->flags); 3668 3669 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3670 3671 hci_key_change_cfm(conn, ev->status); 3672 } 3673 3674 hci_dev_unlock(hdev); 3675 } 3676 3677 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3678 struct sk_buff *skb) 3679 { 3680 struct hci_ev_remote_features *ev = data; 3681 struct hci_conn *conn; 3682 3683 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3684 3685 hci_dev_lock(hdev); 3686 3687 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3688 if (!conn) 3689 goto unlock; 3690 3691 if (!ev->status) 3692 memcpy(conn->features[0], ev->features, 8); 3693 3694 if (conn->state != BT_CONFIG) 3695 goto unlock; 3696 3697 if (!ev->status && lmp_ext_feat_capable(hdev) && 3698 lmp_ext_feat_capable(conn)) { 3699 struct hci_cp_read_remote_ext_features cp; 3700 cp.handle = ev->handle; 3701 cp.page = 0x01; 3702 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3703 sizeof(cp), &cp); 3704 goto unlock; 3705 } 3706 3707 if (!ev->status) { 3708 struct hci_cp_remote_name_req cp; 3709 memset(&cp, 0, sizeof(cp)); 3710 bacpy(&cp.bdaddr, &conn->dst); 3711 cp.pscan_rep_mode = 0x02; 3712 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3713 } else { 3714 mgmt_device_connected(hdev, conn, NULL, 0); 3715 } 3716 3717 if (!hci_outgoing_auth_needed(hdev, conn)) { 3718 conn->state = BT_CONNECTED; 3719 hci_connect_cfm(conn, ev->status); 3720 hci_conn_drop(conn); 3721 } 3722 3723 unlock: 3724 hci_dev_unlock(hdev); 3725 } 3726 3727 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3728 { 3729 cancel_delayed_work(&hdev->cmd_timer); 3730 3731 rcu_read_lock(); 3732 if (!test_bit(HCI_RESET, &hdev->flags)) { 3733 if (ncmd) { 3734 cancel_delayed_work(&hdev->ncmd_timer); 3735 atomic_set(&hdev->cmd_cnt, 1); 3736 } else { 3737 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3738 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3739 HCI_NCMD_TIMEOUT); 3740 } 3741 } 3742 rcu_read_unlock(); 3743 } 3744 3745 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3746 struct sk_buff *skb) 3747 { 3748 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3749 3750 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3751 3752 if (rp->status) 3753 return rp->status; 3754 3755 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3756 hdev->le_pkts = rp->acl_max_pkt; 3757 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3758 hdev->iso_pkts = rp->iso_max_pkt; 3759 3760 hdev->le_cnt = hdev->le_pkts; 3761 hdev->iso_cnt = hdev->iso_pkts; 3762 3763 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3764 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3765 3766 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 3767 return HCI_ERROR_INVALID_PARAMETERS; 3768 3769 return rp->status; 3770 } 3771 3772 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3773 { 3774 struct hci_conn *conn, *tmp; 3775 3776 lockdep_assert_held(&hdev->lock); 3777 3778 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3779 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) || 3780 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3781 continue; 3782 3783 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3784 hci_conn_failed(conn, status); 3785 } 3786 } 3787 3788 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3789 struct sk_buff *skb) 3790 { 3791 struct hci_rp_le_set_cig_params *rp = data; 3792 struct hci_cp_le_set_cig_params *cp; 3793 struct hci_conn *conn; 3794 u8 status = rp->status; 3795 bool pending = false; 3796 int i; 3797 3798 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3799 3800 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3801 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3802 rp->cig_id != cp->cig_id)) { 3803 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3804 status = HCI_ERROR_UNSPECIFIED; 3805 } 3806 3807 hci_dev_lock(hdev); 3808 3809 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3810 * 3811 * If the Status return parameter is non-zero, then the state of the CIG 3812 * and its CIS configurations shall not be changed by the command. If 3813 * the CIG did not already exist, it shall not be created. 3814 */ 3815 if (status) { 3816 /* Keep current configuration, fail only the unbound CIS */ 3817 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3818 goto unlock; 3819 } 3820 3821 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3822 * 3823 * If the Status return parameter is zero, then the Controller shall 3824 * set the Connection_Handle arrayed return parameter to the connection 3825 * handle(s) corresponding to the CIS configurations specified in 3826 * the CIS_IDs command parameter, in the same order. 3827 */ 3828 for (i = 0; i < rp->num_handles; ++i) { 3829 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3830 cp->cis[i].cis_id); 3831 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3832 continue; 3833 3834 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3835 continue; 3836 3837 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3838 continue; 3839 3840 if (conn->state == BT_CONNECT) 3841 pending = true; 3842 } 3843 3844 unlock: 3845 if (pending) 3846 hci_le_create_cis_pending(hdev); 3847 3848 hci_dev_unlock(hdev); 3849 3850 return rp->status; 3851 } 3852 3853 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3854 struct sk_buff *skb) 3855 { 3856 struct hci_rp_le_setup_iso_path *rp = data; 3857 struct hci_cp_le_setup_iso_path *cp; 3858 struct hci_conn *conn; 3859 3860 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3861 3862 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3863 if (!cp) 3864 return rp->status; 3865 3866 hci_dev_lock(hdev); 3867 3868 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3869 if (!conn) 3870 goto unlock; 3871 3872 if (rp->status) { 3873 hci_connect_cfm(conn, rp->status); 3874 hci_conn_del(conn); 3875 goto unlock; 3876 } 3877 3878 switch (cp->direction) { 3879 /* Input (Host to Controller) */ 3880 case 0x00: 3881 /* Only confirm connection if output only */ 3882 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3883 hci_connect_cfm(conn, rp->status); 3884 break; 3885 /* Output (Controller to Host) */ 3886 case 0x01: 3887 /* Confirm connection since conn->iso_qos is always configured 3888 * last. 3889 */ 3890 hci_connect_cfm(conn, rp->status); 3891 3892 /* Notify device connected in case it is a BIG Sync */ 3893 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) 3894 mgmt_device_connected(hdev, conn, NULL, 0); 3895 3896 break; 3897 } 3898 3899 unlock: 3900 hci_dev_unlock(hdev); 3901 return rp->status; 3902 } 3903 3904 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3905 { 3906 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3907 } 3908 3909 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3910 struct sk_buff *skb) 3911 { 3912 struct hci_ev_status *rp = data; 3913 struct hci_cp_le_set_per_adv_params *cp; 3914 3915 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3916 3917 if (rp->status) 3918 return rp->status; 3919 3920 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3921 if (!cp) 3922 return rp->status; 3923 3924 /* TODO: set the conn state */ 3925 return rp->status; 3926 } 3927 3928 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3929 struct sk_buff *skb) 3930 { 3931 struct hci_ev_status *rp = data; 3932 struct hci_cp_le_set_per_adv_enable *cp; 3933 struct adv_info *adv = NULL, *n; 3934 u8 per_adv_cnt = 0; 3935 3936 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3937 3938 if (rp->status) 3939 return rp->status; 3940 3941 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3942 if (!cp) 3943 return rp->status; 3944 3945 hci_dev_lock(hdev); 3946 3947 adv = hci_find_adv_instance(hdev, cp->handle); 3948 3949 if (cp->enable) { 3950 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3951 3952 if (adv) 3953 adv->enabled = true; 3954 } else { 3955 /* If just one instance was disabled check if there are 3956 * any other instance enabled before clearing HCI_LE_PER_ADV. 3957 * The current periodic adv instance will be marked as 3958 * disabled once extended advertising is also disabled. 3959 */ 3960 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 3961 list) { 3962 if (adv->periodic && adv->enabled) 3963 per_adv_cnt++; 3964 } 3965 3966 if (per_adv_cnt > 1) 3967 goto unlock; 3968 3969 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3970 } 3971 3972 unlock: 3973 hci_dev_unlock(hdev); 3974 3975 return rp->status; 3976 } 3977 3978 #define HCI_CC_VL(_op, _func, _min, _max) \ 3979 { \ 3980 .op = _op, \ 3981 .func = _func, \ 3982 .min_len = _min, \ 3983 .max_len = _max, \ 3984 } 3985 3986 #define HCI_CC(_op, _func, _len) \ 3987 HCI_CC_VL(_op, _func, _len, _len) 3988 3989 #define HCI_CC_STATUS(_op, _func) \ 3990 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 3991 3992 static const struct hci_cc { 3993 u16 op; 3994 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 3995 u16 min_len; 3996 u16 max_len; 3997 } hci_cc_table[] = { 3998 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 3999 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 4000 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 4001 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 4002 hci_cc_remote_name_req_cancel), 4003 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 4004 sizeof(struct hci_rp_role_discovery)), 4005 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 4006 sizeof(struct hci_rp_read_link_policy)), 4007 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4008 sizeof(struct hci_rp_write_link_policy)), 4009 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4010 sizeof(struct hci_rp_read_def_link_policy)), 4011 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4012 hci_cc_write_def_link_policy), 4013 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4014 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4015 sizeof(struct hci_rp_read_stored_link_key)), 4016 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4017 sizeof(struct hci_rp_delete_stored_link_key)), 4018 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4019 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4020 sizeof(struct hci_rp_read_local_name)), 4021 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4022 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4023 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4024 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4025 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4026 sizeof(struct hci_rp_read_class_of_dev)), 4027 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4028 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4029 sizeof(struct hci_rp_read_voice_setting)), 4030 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4031 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4032 sizeof(struct hci_rp_read_num_supported_iac)), 4033 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4034 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4035 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4036 sizeof(struct hci_rp_read_auth_payload_to)), 4037 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4038 sizeof(struct hci_rp_write_auth_payload_to)), 4039 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4040 sizeof(struct hci_rp_read_local_version)), 4041 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4042 sizeof(struct hci_rp_read_local_commands)), 4043 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4044 sizeof(struct hci_rp_read_local_features)), 4045 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4046 sizeof(struct hci_rp_read_local_ext_features)), 4047 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4048 sizeof(struct hci_rp_read_buffer_size)), 4049 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4050 sizeof(struct hci_rp_read_bd_addr)), 4051 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4052 sizeof(struct hci_rp_read_local_pairing_opts)), 4053 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4054 sizeof(struct hci_rp_read_page_scan_activity)), 4055 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4056 hci_cc_write_page_scan_activity), 4057 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4058 sizeof(struct hci_rp_read_page_scan_type)), 4059 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4060 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4061 sizeof(struct hci_rp_read_clock)), 4062 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4063 sizeof(struct hci_rp_read_enc_key_size)), 4064 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4065 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4066 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4067 hci_cc_read_def_err_data_reporting, 4068 sizeof(struct hci_rp_read_def_err_data_reporting)), 4069 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4070 hci_cc_write_def_err_data_reporting), 4071 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4072 sizeof(struct hci_rp_pin_code_reply)), 4073 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4074 sizeof(struct hci_rp_pin_code_neg_reply)), 4075 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4076 sizeof(struct hci_rp_read_local_oob_data)), 4077 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4078 sizeof(struct hci_rp_read_local_oob_ext_data)), 4079 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4080 sizeof(struct hci_rp_le_read_buffer_size)), 4081 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4082 sizeof(struct hci_rp_le_read_local_features)), 4083 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4084 sizeof(struct hci_rp_le_read_adv_tx_power)), 4085 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4086 sizeof(struct hci_rp_user_confirm_reply)), 4087 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4088 sizeof(struct hci_rp_user_confirm_reply)), 4089 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4090 sizeof(struct hci_rp_user_confirm_reply)), 4091 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4092 sizeof(struct hci_rp_user_confirm_reply)), 4093 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4094 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4095 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4096 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4097 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4098 hci_cc_le_read_accept_list_size, 4099 sizeof(struct hci_rp_le_read_accept_list_size)), 4100 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4101 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4102 hci_cc_le_add_to_accept_list), 4103 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4104 hci_cc_le_del_from_accept_list), 4105 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4106 sizeof(struct hci_rp_le_read_supported_states)), 4107 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4108 sizeof(struct hci_rp_le_read_def_data_len)), 4109 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4110 hci_cc_le_write_def_data_len), 4111 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4112 hci_cc_le_add_to_resolv_list), 4113 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4114 hci_cc_le_del_from_resolv_list), 4115 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4116 hci_cc_le_clear_resolv_list), 4117 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4118 sizeof(struct hci_rp_le_read_resolv_list_size)), 4119 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4120 hci_cc_le_set_addr_resolution_enable), 4121 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4122 sizeof(struct hci_rp_le_read_max_data_len)), 4123 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4124 hci_cc_write_le_host_supported), 4125 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4126 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4127 sizeof(struct hci_rp_read_rssi)), 4128 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4129 sizeof(struct hci_rp_read_tx_power)), 4130 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4131 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4132 hci_cc_le_set_ext_scan_param), 4133 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4134 hci_cc_le_set_ext_scan_enable), 4135 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4136 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4137 hci_cc_le_read_num_adv_sets, 4138 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4139 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4140 sizeof(struct hci_rp_le_set_ext_adv_params)), 4141 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4142 hci_cc_le_set_ext_adv_enable), 4143 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4144 hci_cc_le_set_adv_set_random_addr), 4145 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4146 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4147 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4148 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4149 hci_cc_le_set_per_adv_enable), 4150 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4151 sizeof(struct hci_rp_le_read_transmit_power)), 4152 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4153 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4154 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4155 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4156 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4157 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4158 sizeof(struct hci_rp_le_setup_iso_path)), 4159 }; 4160 4161 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4162 struct sk_buff *skb) 4163 { 4164 void *data; 4165 4166 if (skb->len < cc->min_len) { 4167 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4168 cc->op, skb->len, cc->min_len); 4169 return HCI_ERROR_UNSPECIFIED; 4170 } 4171 4172 /* Just warn if the length is over max_len size it still be possible to 4173 * partially parse the cc so leave to callback to decide if that is 4174 * acceptable. 4175 */ 4176 if (skb->len > cc->max_len) 4177 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4178 cc->op, skb->len, cc->max_len); 4179 4180 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4181 if (!data) 4182 return HCI_ERROR_UNSPECIFIED; 4183 4184 return cc->func(hdev, data, skb); 4185 } 4186 4187 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4188 struct sk_buff *skb, u16 *opcode, u8 *status, 4189 hci_req_complete_t *req_complete, 4190 hci_req_complete_skb_t *req_complete_skb) 4191 { 4192 struct hci_ev_cmd_complete *ev = data; 4193 int i; 4194 4195 *opcode = __le16_to_cpu(ev->opcode); 4196 4197 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4198 4199 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4200 if (hci_cc_table[i].op == *opcode) { 4201 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4202 break; 4203 } 4204 } 4205 4206 if (i == ARRAY_SIZE(hci_cc_table)) { 4207 /* Unknown opcode, assume byte 0 contains the status, so 4208 * that e.g. __hci_cmd_sync() properly returns errors 4209 * for vendor specific commands send by HCI drivers. 4210 * If a vendor doesn't actually follow this convention we may 4211 * need to introduce a vendor CC table in order to properly set 4212 * the status. 4213 */ 4214 *status = skb->data[0]; 4215 } 4216 4217 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4218 4219 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4220 req_complete_skb); 4221 4222 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4223 bt_dev_err(hdev, 4224 "unexpected event for opcode 0x%4.4x", *opcode); 4225 return; 4226 } 4227 4228 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4229 queue_work(hdev->workqueue, &hdev->cmd_work); 4230 } 4231 4232 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4233 { 4234 struct hci_cp_le_create_cis *cp; 4235 bool pending = false; 4236 int i; 4237 4238 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4239 4240 if (!status) 4241 return; 4242 4243 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4244 if (!cp) 4245 return; 4246 4247 hci_dev_lock(hdev); 4248 4249 /* Remove connection if command failed */ 4250 for (i = 0; i < cp->num_cis; i++) { 4251 struct hci_conn *conn; 4252 u16 handle; 4253 4254 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4255 4256 conn = hci_conn_hash_lookup_handle(hdev, handle); 4257 if (conn) { 4258 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4259 &conn->flags)) 4260 pending = true; 4261 conn->state = BT_CLOSED; 4262 hci_connect_cfm(conn, status); 4263 hci_conn_del(conn); 4264 } 4265 } 4266 cp->num_cis = 0; 4267 4268 if (pending) 4269 hci_le_create_cis_pending(hdev); 4270 4271 hci_dev_unlock(hdev); 4272 } 4273 4274 #define HCI_CS(_op, _func) \ 4275 { \ 4276 .op = _op, \ 4277 .func = _func, \ 4278 } 4279 4280 static const struct hci_cs { 4281 u16 op; 4282 void (*func)(struct hci_dev *hdev, __u8 status); 4283 } hci_cs_table[] = { 4284 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4285 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4286 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4287 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4288 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4289 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4290 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4291 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4292 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4293 hci_cs_read_remote_ext_features), 4294 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4295 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4296 hci_cs_enhanced_setup_sync_conn), 4297 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4298 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4299 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4300 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4301 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4302 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4303 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4304 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4305 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4306 }; 4307 4308 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4309 struct sk_buff *skb, u16 *opcode, u8 *status, 4310 hci_req_complete_t *req_complete, 4311 hci_req_complete_skb_t *req_complete_skb) 4312 { 4313 struct hci_ev_cmd_status *ev = data; 4314 int i; 4315 4316 *opcode = __le16_to_cpu(ev->opcode); 4317 *status = ev->status; 4318 4319 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4320 4321 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4322 if (hci_cs_table[i].op == *opcode) { 4323 hci_cs_table[i].func(hdev, ev->status); 4324 break; 4325 } 4326 } 4327 4328 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4329 4330 /* Indicate request completion if the command failed. Also, if 4331 * we're not waiting for a special event and we get a success 4332 * command status we should try to flag the request as completed 4333 * (since for this kind of commands there will not be a command 4334 * complete event). 4335 */ 4336 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { 4337 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4338 req_complete_skb); 4339 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4340 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4341 *opcode); 4342 return; 4343 } 4344 } 4345 4346 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4347 queue_work(hdev->workqueue, &hdev->cmd_work); 4348 } 4349 4350 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4351 struct sk_buff *skb) 4352 { 4353 struct hci_ev_hardware_error *ev = data; 4354 4355 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4356 4357 hdev->hw_error_code = ev->code; 4358 4359 queue_work(hdev->req_workqueue, &hdev->error_reset); 4360 } 4361 4362 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4363 struct sk_buff *skb) 4364 { 4365 struct hci_ev_role_change *ev = data; 4366 struct hci_conn *conn; 4367 4368 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4369 4370 hci_dev_lock(hdev); 4371 4372 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4373 if (conn) { 4374 if (!ev->status) 4375 conn->role = ev->role; 4376 4377 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4378 4379 hci_role_switch_cfm(conn, ev->status, ev->role); 4380 } 4381 4382 hci_dev_unlock(hdev); 4383 } 4384 4385 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4386 struct sk_buff *skb) 4387 { 4388 struct hci_ev_num_comp_pkts *ev = data; 4389 int i; 4390 4391 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4392 flex_array_size(ev, handles, ev->num))) 4393 return; 4394 4395 bt_dev_dbg(hdev, "num %d", ev->num); 4396 4397 for (i = 0; i < ev->num; i++) { 4398 struct hci_comp_pkts_info *info = &ev->handles[i]; 4399 struct hci_conn *conn; 4400 __u16 handle, count; 4401 4402 handle = __le16_to_cpu(info->handle); 4403 count = __le16_to_cpu(info->count); 4404 4405 conn = hci_conn_hash_lookup_handle(hdev, handle); 4406 if (!conn) 4407 continue; 4408 4409 conn->sent -= count; 4410 4411 switch (conn->type) { 4412 case ACL_LINK: 4413 hdev->acl_cnt += count; 4414 if (hdev->acl_cnt > hdev->acl_pkts) 4415 hdev->acl_cnt = hdev->acl_pkts; 4416 break; 4417 4418 case LE_LINK: 4419 if (hdev->le_pkts) { 4420 hdev->le_cnt += count; 4421 if (hdev->le_cnt > hdev->le_pkts) 4422 hdev->le_cnt = hdev->le_pkts; 4423 } else { 4424 hdev->acl_cnt += count; 4425 if (hdev->acl_cnt > hdev->acl_pkts) 4426 hdev->acl_cnt = hdev->acl_pkts; 4427 } 4428 break; 4429 4430 case SCO_LINK: 4431 hdev->sco_cnt += count; 4432 if (hdev->sco_cnt > hdev->sco_pkts) 4433 hdev->sco_cnt = hdev->sco_pkts; 4434 break; 4435 4436 case ISO_LINK: 4437 if (hdev->iso_pkts) { 4438 hdev->iso_cnt += count; 4439 if (hdev->iso_cnt > hdev->iso_pkts) 4440 hdev->iso_cnt = hdev->iso_pkts; 4441 } else if (hdev->le_pkts) { 4442 hdev->le_cnt += count; 4443 if (hdev->le_cnt > hdev->le_pkts) 4444 hdev->le_cnt = hdev->le_pkts; 4445 } else { 4446 hdev->acl_cnt += count; 4447 if (hdev->acl_cnt > hdev->acl_pkts) 4448 hdev->acl_cnt = hdev->acl_pkts; 4449 } 4450 break; 4451 4452 default: 4453 bt_dev_err(hdev, "unknown type %d conn %p", 4454 conn->type, conn); 4455 break; 4456 } 4457 } 4458 4459 queue_work(hdev->workqueue, &hdev->tx_work); 4460 } 4461 4462 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4463 struct sk_buff *skb) 4464 { 4465 struct hci_ev_mode_change *ev = data; 4466 struct hci_conn *conn; 4467 4468 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4469 4470 hci_dev_lock(hdev); 4471 4472 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4473 if (conn) { 4474 conn->mode = ev->mode; 4475 4476 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4477 &conn->flags)) { 4478 if (conn->mode == HCI_CM_ACTIVE) 4479 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4480 else 4481 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4482 } 4483 4484 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4485 hci_sco_setup(conn, ev->status); 4486 } 4487 4488 hci_dev_unlock(hdev); 4489 } 4490 4491 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4492 struct sk_buff *skb) 4493 { 4494 struct hci_ev_pin_code_req *ev = data; 4495 struct hci_conn *conn; 4496 4497 bt_dev_dbg(hdev, ""); 4498 4499 hci_dev_lock(hdev); 4500 4501 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4502 if (!conn) 4503 goto unlock; 4504 4505 if (conn->state == BT_CONNECTED) { 4506 hci_conn_hold(conn); 4507 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4508 hci_conn_drop(conn); 4509 } 4510 4511 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4512 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4513 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4514 sizeof(ev->bdaddr), &ev->bdaddr); 4515 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4516 u8 secure; 4517 4518 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4519 secure = 1; 4520 else 4521 secure = 0; 4522 4523 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4524 } 4525 4526 unlock: 4527 hci_dev_unlock(hdev); 4528 } 4529 4530 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4531 { 4532 if (key_type == HCI_LK_CHANGED_COMBINATION) 4533 return; 4534 4535 conn->pin_length = pin_len; 4536 conn->key_type = key_type; 4537 4538 switch (key_type) { 4539 case HCI_LK_LOCAL_UNIT: 4540 case HCI_LK_REMOTE_UNIT: 4541 case HCI_LK_DEBUG_COMBINATION: 4542 return; 4543 case HCI_LK_COMBINATION: 4544 if (pin_len == 16) 4545 conn->pending_sec_level = BT_SECURITY_HIGH; 4546 else 4547 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4548 break; 4549 case HCI_LK_UNAUTH_COMBINATION_P192: 4550 case HCI_LK_UNAUTH_COMBINATION_P256: 4551 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4552 break; 4553 case HCI_LK_AUTH_COMBINATION_P192: 4554 conn->pending_sec_level = BT_SECURITY_HIGH; 4555 break; 4556 case HCI_LK_AUTH_COMBINATION_P256: 4557 conn->pending_sec_level = BT_SECURITY_FIPS; 4558 break; 4559 } 4560 } 4561 4562 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4563 struct sk_buff *skb) 4564 { 4565 struct hci_ev_link_key_req *ev = data; 4566 struct hci_cp_link_key_reply cp; 4567 struct hci_conn *conn; 4568 struct link_key *key; 4569 4570 bt_dev_dbg(hdev, ""); 4571 4572 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4573 return; 4574 4575 hci_dev_lock(hdev); 4576 4577 key = hci_find_link_key(hdev, &ev->bdaddr); 4578 if (!key) { 4579 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4580 goto not_found; 4581 } 4582 4583 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4584 4585 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4586 if (conn) { 4587 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4588 4589 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4590 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4591 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4592 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4593 goto not_found; 4594 } 4595 4596 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4597 (conn->pending_sec_level == BT_SECURITY_HIGH || 4598 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4599 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4600 goto not_found; 4601 } 4602 4603 conn_set_key(conn, key->type, key->pin_len); 4604 } 4605 4606 bacpy(&cp.bdaddr, &ev->bdaddr); 4607 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4608 4609 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4610 4611 hci_dev_unlock(hdev); 4612 4613 return; 4614 4615 not_found: 4616 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4617 hci_dev_unlock(hdev); 4618 } 4619 4620 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4621 struct sk_buff *skb) 4622 { 4623 struct hci_ev_link_key_notify *ev = data; 4624 struct hci_conn *conn; 4625 struct link_key *key; 4626 bool persistent; 4627 u8 pin_len = 0; 4628 4629 bt_dev_dbg(hdev, ""); 4630 4631 hci_dev_lock(hdev); 4632 4633 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4634 if (!conn) 4635 goto unlock; 4636 4637 /* Ignore NULL link key against CVE-2020-26555 */ 4638 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4639 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4640 &ev->bdaddr); 4641 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4642 hci_conn_drop(conn); 4643 goto unlock; 4644 } 4645 4646 hci_conn_hold(conn); 4647 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4648 hci_conn_drop(conn); 4649 4650 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4651 conn_set_key(conn, ev->key_type, conn->pin_length); 4652 4653 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4654 goto unlock; 4655 4656 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4657 ev->key_type, pin_len, &persistent); 4658 if (!key) 4659 goto unlock; 4660 4661 /* Update connection information since adding the key will have 4662 * fixed up the type in the case of changed combination keys. 4663 */ 4664 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4665 conn_set_key(conn, key->type, key->pin_len); 4666 4667 mgmt_new_link_key(hdev, key, persistent); 4668 4669 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4670 * is set. If it's not set simply remove the key from the kernel 4671 * list (we've still notified user space about it but with 4672 * store_hint being 0). 4673 */ 4674 if (key->type == HCI_LK_DEBUG_COMBINATION && 4675 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4676 list_del_rcu(&key->list); 4677 kfree_rcu(key, rcu); 4678 goto unlock; 4679 } 4680 4681 if (persistent) 4682 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4683 else 4684 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4685 4686 unlock: 4687 hci_dev_unlock(hdev); 4688 } 4689 4690 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4691 struct sk_buff *skb) 4692 { 4693 struct hci_ev_clock_offset *ev = data; 4694 struct hci_conn *conn; 4695 4696 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4697 4698 hci_dev_lock(hdev); 4699 4700 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4701 if (conn && !ev->status) { 4702 struct inquiry_entry *ie; 4703 4704 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4705 if (ie) { 4706 ie->data.clock_offset = ev->clock_offset; 4707 ie->timestamp = jiffies; 4708 } 4709 } 4710 4711 hci_dev_unlock(hdev); 4712 } 4713 4714 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4715 struct sk_buff *skb) 4716 { 4717 struct hci_ev_pkt_type_change *ev = data; 4718 struct hci_conn *conn; 4719 4720 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4721 4722 hci_dev_lock(hdev); 4723 4724 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4725 if (conn && !ev->status) 4726 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4727 4728 hci_dev_unlock(hdev); 4729 } 4730 4731 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4732 struct sk_buff *skb) 4733 { 4734 struct hci_ev_pscan_rep_mode *ev = data; 4735 struct inquiry_entry *ie; 4736 4737 bt_dev_dbg(hdev, ""); 4738 4739 hci_dev_lock(hdev); 4740 4741 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4742 if (ie) { 4743 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4744 ie->timestamp = jiffies; 4745 } 4746 4747 hci_dev_unlock(hdev); 4748 } 4749 4750 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4751 struct sk_buff *skb) 4752 { 4753 struct hci_ev_inquiry_result_rssi *ev = edata; 4754 struct inquiry_data data; 4755 int i; 4756 4757 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4758 4759 if (!ev->num) 4760 return; 4761 4762 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4763 return; 4764 4765 hci_dev_lock(hdev); 4766 4767 if (skb->len == array_size(ev->num, 4768 sizeof(struct inquiry_info_rssi_pscan))) { 4769 struct inquiry_info_rssi_pscan *info; 4770 4771 for (i = 0; i < ev->num; i++) { 4772 u32 flags; 4773 4774 info = hci_ev_skb_pull(hdev, skb, 4775 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4776 sizeof(*info)); 4777 if (!info) { 4778 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4779 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4780 goto unlock; 4781 } 4782 4783 bacpy(&data.bdaddr, &info->bdaddr); 4784 data.pscan_rep_mode = info->pscan_rep_mode; 4785 data.pscan_period_mode = info->pscan_period_mode; 4786 data.pscan_mode = info->pscan_mode; 4787 memcpy(data.dev_class, info->dev_class, 3); 4788 data.clock_offset = info->clock_offset; 4789 data.rssi = info->rssi; 4790 data.ssp_mode = 0x00; 4791 4792 flags = hci_inquiry_cache_update(hdev, &data, false); 4793 4794 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4795 info->dev_class, info->rssi, 4796 flags, NULL, 0, NULL, 0, 0); 4797 } 4798 } else if (skb->len == array_size(ev->num, 4799 sizeof(struct inquiry_info_rssi))) { 4800 struct inquiry_info_rssi *info; 4801 4802 for (i = 0; i < ev->num; i++) { 4803 u32 flags; 4804 4805 info = hci_ev_skb_pull(hdev, skb, 4806 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4807 sizeof(*info)); 4808 if (!info) { 4809 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4810 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4811 goto unlock; 4812 } 4813 4814 bacpy(&data.bdaddr, &info->bdaddr); 4815 data.pscan_rep_mode = info->pscan_rep_mode; 4816 data.pscan_period_mode = info->pscan_period_mode; 4817 data.pscan_mode = 0x00; 4818 memcpy(data.dev_class, info->dev_class, 3); 4819 data.clock_offset = info->clock_offset; 4820 data.rssi = info->rssi; 4821 data.ssp_mode = 0x00; 4822 4823 flags = hci_inquiry_cache_update(hdev, &data, false); 4824 4825 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4826 info->dev_class, info->rssi, 4827 flags, NULL, 0, NULL, 0, 0); 4828 } 4829 } else { 4830 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4831 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4832 } 4833 unlock: 4834 hci_dev_unlock(hdev); 4835 } 4836 4837 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4838 struct sk_buff *skb) 4839 { 4840 struct hci_ev_remote_ext_features *ev = data; 4841 struct hci_conn *conn; 4842 4843 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4844 4845 hci_dev_lock(hdev); 4846 4847 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4848 if (!conn) 4849 goto unlock; 4850 4851 if (ev->page < HCI_MAX_PAGES) 4852 memcpy(conn->features[ev->page], ev->features, 8); 4853 4854 if (!ev->status && ev->page == 0x01) { 4855 struct inquiry_entry *ie; 4856 4857 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4858 if (ie) 4859 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4860 4861 if (ev->features[0] & LMP_HOST_SSP) { 4862 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4863 } else { 4864 /* It is mandatory by the Bluetooth specification that 4865 * Extended Inquiry Results are only used when Secure 4866 * Simple Pairing is enabled, but some devices violate 4867 * this. 4868 * 4869 * To make these devices work, the internal SSP 4870 * enabled flag needs to be cleared if the remote host 4871 * features do not indicate SSP support */ 4872 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4873 } 4874 4875 if (ev->features[0] & LMP_HOST_SC) 4876 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4877 } 4878 4879 if (conn->state != BT_CONFIG) 4880 goto unlock; 4881 4882 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4883 struct hci_cp_remote_name_req cp; 4884 memset(&cp, 0, sizeof(cp)); 4885 bacpy(&cp.bdaddr, &conn->dst); 4886 cp.pscan_rep_mode = 0x02; 4887 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4888 } else { 4889 mgmt_device_connected(hdev, conn, NULL, 0); 4890 } 4891 4892 if (!hci_outgoing_auth_needed(hdev, conn)) { 4893 conn->state = BT_CONNECTED; 4894 hci_connect_cfm(conn, ev->status); 4895 hci_conn_drop(conn); 4896 } 4897 4898 unlock: 4899 hci_dev_unlock(hdev); 4900 } 4901 4902 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4903 struct sk_buff *skb) 4904 { 4905 struct hci_ev_sync_conn_complete *ev = data; 4906 struct hci_conn *conn; 4907 u8 status = ev->status; 4908 4909 switch (ev->link_type) { 4910 case SCO_LINK: 4911 case ESCO_LINK: 4912 break; 4913 default: 4914 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4915 * for HCI_Synchronous_Connection_Complete is limited to 4916 * either SCO or eSCO 4917 */ 4918 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4919 return; 4920 } 4921 4922 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4923 4924 hci_dev_lock(hdev); 4925 4926 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4927 if (!conn) { 4928 if (ev->link_type == ESCO_LINK) 4929 goto unlock; 4930 4931 /* When the link type in the event indicates SCO connection 4932 * and lookup of the connection object fails, then check 4933 * if an eSCO connection object exists. 4934 * 4935 * The core limits the synchronous connections to either 4936 * SCO or eSCO. The eSCO connection is preferred and tried 4937 * to be setup first and until successfully established, 4938 * the link type will be hinted as eSCO. 4939 */ 4940 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4941 if (!conn) 4942 goto unlock; 4943 } 4944 4945 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4946 * Processing it more than once per connection can corrupt kernel memory. 4947 * 4948 * As the connection handle is set here for the first time, it indicates 4949 * whether the connection is already set up. 4950 */ 4951 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 4952 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 4953 goto unlock; 4954 } 4955 4956 switch (status) { 4957 case 0x00: 4958 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 4959 if (status) { 4960 conn->state = BT_CLOSED; 4961 break; 4962 } 4963 4964 conn->state = BT_CONNECTED; 4965 conn->type = ev->link_type; 4966 4967 hci_debugfs_create_conn(conn); 4968 hci_conn_add_sysfs(conn); 4969 break; 4970 4971 case 0x10: /* Connection Accept Timeout */ 4972 case 0x0d: /* Connection Rejected due to Limited Resources */ 4973 case 0x11: /* Unsupported Feature or Parameter Value */ 4974 case 0x1c: /* SCO interval rejected */ 4975 case 0x1a: /* Unsupported Remote Feature */ 4976 case 0x1e: /* Invalid LMP Parameters */ 4977 case 0x1f: /* Unspecified error */ 4978 case 0x20: /* Unsupported LMP Parameter value */ 4979 if (conn->out) { 4980 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 4981 (hdev->esco_type & EDR_ESCO_MASK); 4982 if (hci_setup_sync(conn, conn->parent->handle)) 4983 goto unlock; 4984 } 4985 fallthrough; 4986 4987 default: 4988 conn->state = BT_CLOSED; 4989 break; 4990 } 4991 4992 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 4993 /* Notify only in case of SCO over HCI transport data path which 4994 * is zero and non-zero value shall be non-HCI transport data path 4995 */ 4996 if (conn->codec.data_path == 0 && hdev->notify) { 4997 switch (ev->air_mode) { 4998 case 0x02: 4999 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5000 break; 5001 case 0x03: 5002 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5003 break; 5004 } 5005 } 5006 5007 hci_connect_cfm(conn, status); 5008 if (status) 5009 hci_conn_del(conn); 5010 5011 unlock: 5012 hci_dev_unlock(hdev); 5013 } 5014 5015 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5016 { 5017 size_t parsed = 0; 5018 5019 while (parsed < eir_len) { 5020 u8 field_len = eir[0]; 5021 5022 if (field_len == 0) 5023 return parsed; 5024 5025 parsed += field_len + 1; 5026 eir += field_len + 1; 5027 } 5028 5029 return eir_len; 5030 } 5031 5032 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5033 struct sk_buff *skb) 5034 { 5035 struct hci_ev_ext_inquiry_result *ev = edata; 5036 struct inquiry_data data; 5037 size_t eir_len; 5038 int i; 5039 5040 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5041 flex_array_size(ev, info, ev->num))) 5042 return; 5043 5044 bt_dev_dbg(hdev, "num %d", ev->num); 5045 5046 if (!ev->num) 5047 return; 5048 5049 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5050 return; 5051 5052 hci_dev_lock(hdev); 5053 5054 for (i = 0; i < ev->num; i++) { 5055 struct extended_inquiry_info *info = &ev->info[i]; 5056 u32 flags; 5057 bool name_known; 5058 5059 bacpy(&data.bdaddr, &info->bdaddr); 5060 data.pscan_rep_mode = info->pscan_rep_mode; 5061 data.pscan_period_mode = info->pscan_period_mode; 5062 data.pscan_mode = 0x00; 5063 memcpy(data.dev_class, info->dev_class, 3); 5064 data.clock_offset = info->clock_offset; 5065 data.rssi = info->rssi; 5066 data.ssp_mode = 0x01; 5067 5068 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5069 name_known = eir_get_data(info->data, 5070 sizeof(info->data), 5071 EIR_NAME_COMPLETE, NULL); 5072 else 5073 name_known = true; 5074 5075 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5076 5077 eir_len = eir_get_length(info->data, sizeof(info->data)); 5078 5079 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5080 info->dev_class, info->rssi, 5081 flags, info->data, eir_len, NULL, 0, 0); 5082 } 5083 5084 hci_dev_unlock(hdev); 5085 } 5086 5087 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5088 struct sk_buff *skb) 5089 { 5090 struct hci_ev_key_refresh_complete *ev = data; 5091 struct hci_conn *conn; 5092 5093 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5094 __le16_to_cpu(ev->handle)); 5095 5096 hci_dev_lock(hdev); 5097 5098 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5099 if (!conn) 5100 goto unlock; 5101 5102 /* For BR/EDR the necessary steps are taken through the 5103 * auth_complete event. 5104 */ 5105 if (conn->type != LE_LINK) 5106 goto unlock; 5107 5108 if (!ev->status) 5109 conn->sec_level = conn->pending_sec_level; 5110 5111 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5112 5113 if (ev->status && conn->state == BT_CONNECTED) { 5114 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5115 hci_conn_drop(conn); 5116 goto unlock; 5117 } 5118 5119 if (conn->state == BT_CONFIG) { 5120 if (!ev->status) 5121 conn->state = BT_CONNECTED; 5122 5123 hci_connect_cfm(conn, ev->status); 5124 hci_conn_drop(conn); 5125 } else { 5126 hci_auth_cfm(conn, ev->status); 5127 5128 hci_conn_hold(conn); 5129 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5130 hci_conn_drop(conn); 5131 } 5132 5133 unlock: 5134 hci_dev_unlock(hdev); 5135 } 5136 5137 static u8 hci_get_auth_req(struct hci_conn *conn) 5138 { 5139 /* If remote requests no-bonding follow that lead */ 5140 if (conn->remote_auth == HCI_AT_NO_BONDING || 5141 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5142 return conn->remote_auth | (conn->auth_type & 0x01); 5143 5144 /* If both remote and local have enough IO capabilities, require 5145 * MITM protection 5146 */ 5147 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5148 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5149 return conn->remote_auth | 0x01; 5150 5151 /* No MITM protection possible so ignore remote requirement */ 5152 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5153 } 5154 5155 static u8 bredr_oob_data_present(struct hci_conn *conn) 5156 { 5157 struct hci_dev *hdev = conn->hdev; 5158 struct oob_data *data; 5159 5160 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5161 if (!data) 5162 return 0x00; 5163 5164 if (bredr_sc_enabled(hdev)) { 5165 /* When Secure Connections is enabled, then just 5166 * return the present value stored with the OOB 5167 * data. The stored value contains the right present 5168 * information. However it can only be trusted when 5169 * not in Secure Connection Only mode. 5170 */ 5171 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5172 return data->present; 5173 5174 /* When Secure Connections Only mode is enabled, then 5175 * the P-256 values are required. If they are not 5176 * available, then do not declare that OOB data is 5177 * present. 5178 */ 5179 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5180 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5181 return 0x00; 5182 5183 return 0x02; 5184 } 5185 5186 /* When Secure Connections is not enabled or actually 5187 * not supported by the hardware, then check that if 5188 * P-192 data values are present. 5189 */ 5190 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5191 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5192 return 0x00; 5193 5194 return 0x01; 5195 } 5196 5197 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5198 struct sk_buff *skb) 5199 { 5200 struct hci_ev_io_capa_request *ev = data; 5201 struct hci_conn *conn; 5202 5203 bt_dev_dbg(hdev, ""); 5204 5205 hci_dev_lock(hdev); 5206 5207 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5208 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5209 goto unlock; 5210 5211 /* Assume remote supports SSP since it has triggered this event */ 5212 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5213 5214 hci_conn_hold(conn); 5215 5216 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5217 goto unlock; 5218 5219 /* Allow pairing if we're pairable, the initiators of the 5220 * pairing or if the remote is not requesting bonding. 5221 */ 5222 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5223 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5224 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5225 struct hci_cp_io_capability_reply cp; 5226 5227 bacpy(&cp.bdaddr, &ev->bdaddr); 5228 /* Change the IO capability from KeyboardDisplay 5229 * to DisplayYesNo as it is not supported by BT spec. */ 5230 cp.capability = (conn->io_capability == 0x04) ? 5231 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5232 5233 /* If we are initiators, there is no remote information yet */ 5234 if (conn->remote_auth == 0xff) { 5235 /* Request MITM protection if our IO caps allow it 5236 * except for the no-bonding case. 5237 */ 5238 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5239 conn->auth_type != HCI_AT_NO_BONDING) 5240 conn->auth_type |= 0x01; 5241 } else { 5242 conn->auth_type = hci_get_auth_req(conn); 5243 } 5244 5245 /* If we're not bondable, force one of the non-bondable 5246 * authentication requirement values. 5247 */ 5248 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5249 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5250 5251 cp.authentication = conn->auth_type; 5252 cp.oob_data = bredr_oob_data_present(conn); 5253 5254 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5255 sizeof(cp), &cp); 5256 } else { 5257 struct hci_cp_io_capability_neg_reply cp; 5258 5259 bacpy(&cp.bdaddr, &ev->bdaddr); 5260 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5261 5262 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5263 sizeof(cp), &cp); 5264 } 5265 5266 unlock: 5267 hci_dev_unlock(hdev); 5268 } 5269 5270 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5271 struct sk_buff *skb) 5272 { 5273 struct hci_ev_io_capa_reply *ev = data; 5274 struct hci_conn *conn; 5275 5276 bt_dev_dbg(hdev, ""); 5277 5278 hci_dev_lock(hdev); 5279 5280 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5281 if (!conn) 5282 goto unlock; 5283 5284 conn->remote_cap = ev->capability; 5285 conn->remote_auth = ev->authentication; 5286 5287 unlock: 5288 hci_dev_unlock(hdev); 5289 } 5290 5291 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5292 struct sk_buff *skb) 5293 { 5294 struct hci_ev_user_confirm_req *ev = data; 5295 int loc_mitm, rem_mitm, confirm_hint = 0; 5296 struct hci_conn *conn; 5297 5298 bt_dev_dbg(hdev, ""); 5299 5300 hci_dev_lock(hdev); 5301 5302 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5303 goto unlock; 5304 5305 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5306 if (!conn) 5307 goto unlock; 5308 5309 loc_mitm = (conn->auth_type & 0x01); 5310 rem_mitm = (conn->remote_auth & 0x01); 5311 5312 /* If we require MITM but the remote device can't provide that 5313 * (it has NoInputNoOutput) then reject the confirmation 5314 * request. We check the security level here since it doesn't 5315 * necessarily match conn->auth_type. 5316 */ 5317 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5318 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5319 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5320 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5321 sizeof(ev->bdaddr), &ev->bdaddr); 5322 goto unlock; 5323 } 5324 5325 /* If no side requires MITM protection; use JUST_CFM method */ 5326 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5327 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5328 5329 /* If we're not the initiator of request authorization and the 5330 * local IO capability is not NoInputNoOutput, use JUST_WORKS 5331 * method (mgmt_user_confirm with confirm_hint set to 1). 5332 */ 5333 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5334 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) { 5335 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5336 confirm_hint = 1; 5337 goto confirm; 5338 } 5339 5340 /* If there already exists link key in local host, leave the 5341 * decision to user space since the remote device could be 5342 * legitimate or malicious. 5343 */ 5344 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5345 bt_dev_dbg(hdev, "Local host already has link key"); 5346 confirm_hint = 1; 5347 goto confirm; 5348 } 5349 5350 BT_DBG("Auto-accept of user confirmation with %ums delay", 5351 hdev->auto_accept_delay); 5352 5353 if (hdev->auto_accept_delay > 0) { 5354 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5355 queue_delayed_work(conn->hdev->workqueue, 5356 &conn->auto_accept_work, delay); 5357 goto unlock; 5358 } 5359 5360 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5361 sizeof(ev->bdaddr), &ev->bdaddr); 5362 goto unlock; 5363 } 5364 5365 confirm: 5366 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5367 le32_to_cpu(ev->passkey), confirm_hint); 5368 5369 unlock: 5370 hci_dev_unlock(hdev); 5371 } 5372 5373 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5374 struct sk_buff *skb) 5375 { 5376 struct hci_ev_user_passkey_req *ev = data; 5377 5378 bt_dev_dbg(hdev, ""); 5379 5380 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5381 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5382 } 5383 5384 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5385 struct sk_buff *skb) 5386 { 5387 struct hci_ev_user_passkey_notify *ev = data; 5388 struct hci_conn *conn; 5389 5390 bt_dev_dbg(hdev, ""); 5391 5392 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5393 if (!conn) 5394 return; 5395 5396 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5397 conn->passkey_entered = 0; 5398 5399 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5400 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5401 conn->dst_type, conn->passkey_notify, 5402 conn->passkey_entered); 5403 } 5404 5405 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5406 struct sk_buff *skb) 5407 { 5408 struct hci_ev_keypress_notify *ev = data; 5409 struct hci_conn *conn; 5410 5411 bt_dev_dbg(hdev, ""); 5412 5413 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5414 if (!conn) 5415 return; 5416 5417 switch (ev->type) { 5418 case HCI_KEYPRESS_STARTED: 5419 conn->passkey_entered = 0; 5420 return; 5421 5422 case HCI_KEYPRESS_ENTERED: 5423 conn->passkey_entered++; 5424 break; 5425 5426 case HCI_KEYPRESS_ERASED: 5427 conn->passkey_entered--; 5428 break; 5429 5430 case HCI_KEYPRESS_CLEARED: 5431 conn->passkey_entered = 0; 5432 break; 5433 5434 case HCI_KEYPRESS_COMPLETED: 5435 return; 5436 } 5437 5438 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5439 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5440 conn->dst_type, conn->passkey_notify, 5441 conn->passkey_entered); 5442 } 5443 5444 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5445 struct sk_buff *skb) 5446 { 5447 struct hci_ev_simple_pair_complete *ev = data; 5448 struct hci_conn *conn; 5449 5450 bt_dev_dbg(hdev, ""); 5451 5452 hci_dev_lock(hdev); 5453 5454 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5455 if (!conn || !hci_conn_ssp_enabled(conn)) 5456 goto unlock; 5457 5458 /* Reset the authentication requirement to unknown */ 5459 conn->remote_auth = 0xff; 5460 5461 /* To avoid duplicate auth_failed events to user space we check 5462 * the HCI_CONN_AUTH_PEND flag which will be set if we 5463 * initiated the authentication. A traditional auth_complete 5464 * event gets always produced as initiator and is also mapped to 5465 * the mgmt_auth_failed event */ 5466 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5467 mgmt_auth_failed(conn, ev->status); 5468 5469 hci_conn_drop(conn); 5470 5471 unlock: 5472 hci_dev_unlock(hdev); 5473 } 5474 5475 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5476 struct sk_buff *skb) 5477 { 5478 struct hci_ev_remote_host_features *ev = data; 5479 struct inquiry_entry *ie; 5480 struct hci_conn *conn; 5481 5482 bt_dev_dbg(hdev, ""); 5483 5484 hci_dev_lock(hdev); 5485 5486 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5487 if (conn) 5488 memcpy(conn->features[1], ev->features, 8); 5489 5490 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5491 if (ie) 5492 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5493 5494 hci_dev_unlock(hdev); 5495 } 5496 5497 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5498 struct sk_buff *skb) 5499 { 5500 struct hci_ev_remote_oob_data_request *ev = edata; 5501 struct oob_data *data; 5502 5503 bt_dev_dbg(hdev, ""); 5504 5505 hci_dev_lock(hdev); 5506 5507 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5508 goto unlock; 5509 5510 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5511 if (!data) { 5512 struct hci_cp_remote_oob_data_neg_reply cp; 5513 5514 bacpy(&cp.bdaddr, &ev->bdaddr); 5515 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5516 sizeof(cp), &cp); 5517 goto unlock; 5518 } 5519 5520 if (bredr_sc_enabled(hdev)) { 5521 struct hci_cp_remote_oob_ext_data_reply cp; 5522 5523 bacpy(&cp.bdaddr, &ev->bdaddr); 5524 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5525 memset(cp.hash192, 0, sizeof(cp.hash192)); 5526 memset(cp.rand192, 0, sizeof(cp.rand192)); 5527 } else { 5528 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5529 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5530 } 5531 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5532 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5533 5534 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5535 sizeof(cp), &cp); 5536 } else { 5537 struct hci_cp_remote_oob_data_reply cp; 5538 5539 bacpy(&cp.bdaddr, &ev->bdaddr); 5540 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5541 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5542 5543 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5544 sizeof(cp), &cp); 5545 } 5546 5547 unlock: 5548 hci_dev_unlock(hdev); 5549 } 5550 5551 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5552 u8 bdaddr_type, bdaddr_t *local_rpa) 5553 { 5554 if (conn->out) { 5555 conn->dst_type = bdaddr_type; 5556 conn->resp_addr_type = bdaddr_type; 5557 bacpy(&conn->resp_addr, bdaddr); 5558 5559 /* Check if the controller has set a Local RPA then it must be 5560 * used instead or hdev->rpa. 5561 */ 5562 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5563 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5564 bacpy(&conn->init_addr, local_rpa); 5565 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5566 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5567 bacpy(&conn->init_addr, &conn->hdev->rpa); 5568 } else { 5569 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5570 &conn->init_addr_type); 5571 } 5572 } else { 5573 conn->resp_addr_type = conn->hdev->adv_addr_type; 5574 /* Check if the controller has set a Local RPA then it must be 5575 * used instead or hdev->rpa. 5576 */ 5577 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5578 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5579 bacpy(&conn->resp_addr, local_rpa); 5580 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5581 /* In case of ext adv, resp_addr will be updated in 5582 * Adv Terminated event. 5583 */ 5584 if (!ext_adv_capable(conn->hdev)) 5585 bacpy(&conn->resp_addr, 5586 &conn->hdev->random_addr); 5587 } else { 5588 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5589 } 5590 5591 conn->init_addr_type = bdaddr_type; 5592 bacpy(&conn->init_addr, bdaddr); 5593 5594 /* For incoming connections, set the default minimum 5595 * and maximum connection interval. They will be used 5596 * to check if the parameters are in range and if not 5597 * trigger the connection update procedure. 5598 */ 5599 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5600 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5601 } 5602 } 5603 5604 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5605 bdaddr_t *bdaddr, u8 bdaddr_type, 5606 bdaddr_t *local_rpa, u8 role, u16 handle, 5607 u16 interval, u16 latency, 5608 u16 supervision_timeout) 5609 { 5610 struct hci_conn_params *params; 5611 struct hci_conn *conn; 5612 struct smp_irk *irk; 5613 u8 addr_type; 5614 5615 hci_dev_lock(hdev); 5616 5617 /* All controllers implicitly stop advertising in the event of a 5618 * connection, so ensure that the state bit is cleared. 5619 */ 5620 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5621 5622 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5623 if (!conn) { 5624 /* In case of error status and there is no connection pending 5625 * just unlock as there is nothing to cleanup. 5626 */ 5627 if (status) 5628 goto unlock; 5629 5630 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5631 if (IS_ERR(conn)) { 5632 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 5633 goto unlock; 5634 } 5635 5636 conn->dst_type = bdaddr_type; 5637 5638 /* If we didn't have a hci_conn object previously 5639 * but we're in central role this must be something 5640 * initiated using an accept list. Since accept list based 5641 * connections are not "first class citizens" we don't 5642 * have full tracking of them. Therefore, we go ahead 5643 * with a "best effort" approach of determining the 5644 * initiator address based on the HCI_PRIVACY flag. 5645 */ 5646 if (conn->out) { 5647 conn->resp_addr_type = bdaddr_type; 5648 bacpy(&conn->resp_addr, bdaddr); 5649 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5650 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5651 bacpy(&conn->init_addr, &hdev->rpa); 5652 } else { 5653 hci_copy_identity_address(hdev, 5654 &conn->init_addr, 5655 &conn->init_addr_type); 5656 } 5657 } 5658 } else { 5659 cancel_delayed_work(&conn->le_conn_timeout); 5660 } 5661 5662 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5663 * Processing it more than once per connection can corrupt kernel memory. 5664 * 5665 * As the connection handle is set here for the first time, it indicates 5666 * whether the connection is already set up. 5667 */ 5668 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5669 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5670 goto unlock; 5671 } 5672 5673 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5674 5675 /* Lookup the identity address from the stored connection 5676 * address and address type. 5677 * 5678 * When establishing connections to an identity address, the 5679 * connection procedure will store the resolvable random 5680 * address first. Now if it can be converted back into the 5681 * identity address, start using the identity address from 5682 * now on. 5683 */ 5684 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5685 if (irk) { 5686 bacpy(&conn->dst, &irk->bdaddr); 5687 conn->dst_type = irk->addr_type; 5688 } 5689 5690 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5691 5692 /* All connection failure handling is taken care of by the 5693 * hci_conn_failed function which is triggered by the HCI 5694 * request completion callbacks used for connecting. 5695 */ 5696 if (status || hci_conn_set_handle(conn, handle)) 5697 goto unlock; 5698 5699 /* Drop the connection if it has been aborted */ 5700 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5701 hci_conn_drop(conn); 5702 goto unlock; 5703 } 5704 5705 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5706 addr_type = BDADDR_LE_PUBLIC; 5707 else 5708 addr_type = BDADDR_LE_RANDOM; 5709 5710 /* Drop the connection if the device is blocked */ 5711 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5712 hci_conn_drop(conn); 5713 goto unlock; 5714 } 5715 5716 mgmt_device_connected(hdev, conn, NULL, 0); 5717 5718 conn->sec_level = BT_SECURITY_LOW; 5719 conn->state = BT_CONFIG; 5720 5721 /* Store current advertising instance as connection advertising instance 5722 * when sotfware rotation is in use so it can be re-enabled when 5723 * disconnected. 5724 */ 5725 if (!ext_adv_capable(hdev)) 5726 conn->adv_instance = hdev->cur_adv_instance; 5727 5728 conn->le_conn_interval = interval; 5729 conn->le_conn_latency = latency; 5730 conn->le_supv_timeout = supervision_timeout; 5731 5732 hci_debugfs_create_conn(conn); 5733 hci_conn_add_sysfs(conn); 5734 5735 /* The remote features procedure is defined for central 5736 * role only. So only in case of an initiated connection 5737 * request the remote features. 5738 * 5739 * If the local controller supports peripheral-initiated features 5740 * exchange, then requesting the remote features in peripheral 5741 * role is possible. Otherwise just transition into the 5742 * connected state without requesting the remote features. 5743 */ 5744 if (conn->out || 5745 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5746 struct hci_cp_le_read_remote_features cp; 5747 5748 cp.handle = __cpu_to_le16(conn->handle); 5749 5750 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5751 sizeof(cp), &cp); 5752 5753 hci_conn_hold(conn); 5754 } else { 5755 conn->state = BT_CONNECTED; 5756 hci_connect_cfm(conn, status); 5757 } 5758 5759 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5760 conn->dst_type); 5761 if (params) { 5762 hci_pend_le_list_del_init(params); 5763 if (params->conn) { 5764 hci_conn_drop(params->conn); 5765 hci_conn_put(params->conn); 5766 params->conn = NULL; 5767 } 5768 } 5769 5770 unlock: 5771 hci_update_passive_scan(hdev); 5772 hci_dev_unlock(hdev); 5773 } 5774 5775 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5776 struct sk_buff *skb) 5777 { 5778 struct hci_ev_le_conn_complete *ev = data; 5779 5780 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5781 5782 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5783 NULL, ev->role, le16_to_cpu(ev->handle), 5784 le16_to_cpu(ev->interval), 5785 le16_to_cpu(ev->latency), 5786 le16_to_cpu(ev->supervision_timeout)); 5787 } 5788 5789 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5790 struct sk_buff *skb) 5791 { 5792 struct hci_ev_le_enh_conn_complete *ev = data; 5793 5794 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5795 5796 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5797 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 5798 le16_to_cpu(ev->interval), 5799 le16_to_cpu(ev->latency), 5800 le16_to_cpu(ev->supervision_timeout)); 5801 } 5802 5803 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 5804 struct sk_buff *skb) 5805 { 5806 struct hci_evt_le_ext_adv_set_term *ev = data; 5807 struct hci_conn *conn; 5808 struct adv_info *adv, *n; 5809 5810 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5811 5812 /* The Bluetooth Core 5.3 specification clearly states that this event 5813 * shall not be sent when the Host disables the advertising set. So in 5814 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 5815 * 5816 * When the Host disables an advertising set, all cleanup is done via 5817 * its command callback and not needed to be duplicated here. 5818 */ 5819 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 5820 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 5821 return; 5822 } 5823 5824 hci_dev_lock(hdev); 5825 5826 adv = hci_find_adv_instance(hdev, ev->handle); 5827 5828 if (ev->status) { 5829 if (!adv) 5830 goto unlock; 5831 5832 /* Remove advertising as it has been terminated */ 5833 hci_remove_adv_instance(hdev, ev->handle); 5834 mgmt_advertising_removed(NULL, hdev, ev->handle); 5835 5836 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 5837 if (adv->enabled) 5838 goto unlock; 5839 } 5840 5841 /* We are no longer advertising, clear HCI_LE_ADV */ 5842 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5843 goto unlock; 5844 } 5845 5846 if (adv) 5847 adv->enabled = false; 5848 5849 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 5850 if (conn) { 5851 /* Store handle in the connection so the correct advertising 5852 * instance can be re-enabled when disconnected. 5853 */ 5854 conn->adv_instance = ev->handle; 5855 5856 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 5857 bacmp(&conn->resp_addr, BDADDR_ANY)) 5858 goto unlock; 5859 5860 if (!ev->handle) { 5861 bacpy(&conn->resp_addr, &hdev->random_addr); 5862 goto unlock; 5863 } 5864 5865 if (adv) 5866 bacpy(&conn->resp_addr, &adv->random_addr); 5867 } 5868 5869 unlock: 5870 hci_dev_unlock(hdev); 5871 } 5872 5873 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 5874 struct sk_buff *skb) 5875 { 5876 struct hci_ev_le_conn_update_complete *ev = data; 5877 struct hci_conn *conn; 5878 5879 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5880 5881 if (ev->status) 5882 return; 5883 5884 hci_dev_lock(hdev); 5885 5886 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5887 if (conn) { 5888 conn->le_conn_interval = le16_to_cpu(ev->interval); 5889 conn->le_conn_latency = le16_to_cpu(ev->latency); 5890 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 5891 } 5892 5893 hci_dev_unlock(hdev); 5894 } 5895 5896 /* This function requires the caller holds hdev->lock */ 5897 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 5898 bdaddr_t *addr, 5899 u8 addr_type, bool addr_resolved, 5900 u8 adv_type, u8 phy, u8 sec_phy) 5901 { 5902 struct hci_conn *conn; 5903 struct hci_conn_params *params; 5904 5905 /* If the event is not connectable don't proceed further */ 5906 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 5907 return NULL; 5908 5909 /* Ignore if the device is blocked or hdev is suspended */ 5910 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 5911 hdev->suspended) 5912 return NULL; 5913 5914 /* Most controller will fail if we try to create new connections 5915 * while we have an existing one in peripheral role. 5916 */ 5917 if (hdev->conn_hash.le_num_peripheral > 0 && 5918 (test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) || 5919 !(hdev->le_states[3] & 0x10))) 5920 return NULL; 5921 5922 /* If we're not connectable only connect devices that we have in 5923 * our pend_le_conns list. 5924 */ 5925 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 5926 addr_type); 5927 if (!params) 5928 return NULL; 5929 5930 if (!params->explicit_connect) { 5931 switch (params->auto_connect) { 5932 case HCI_AUTO_CONN_DIRECT: 5933 /* Only devices advertising with ADV_DIRECT_IND are 5934 * triggering a connection attempt. This is allowing 5935 * incoming connections from peripheral devices. 5936 */ 5937 if (adv_type != LE_ADV_DIRECT_IND) 5938 return NULL; 5939 break; 5940 case HCI_AUTO_CONN_ALWAYS: 5941 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 5942 * are triggering a connection attempt. This means 5943 * that incoming connections from peripheral device are 5944 * accepted and also outgoing connections to peripheral 5945 * devices are established when found. 5946 */ 5947 break; 5948 default: 5949 return NULL; 5950 } 5951 } 5952 5953 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 5954 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 5955 HCI_ROLE_MASTER, phy, sec_phy); 5956 if (!IS_ERR(conn)) { 5957 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 5958 * by higher layer that tried to connect, if no then 5959 * store the pointer since we don't really have any 5960 * other owner of the object besides the params that 5961 * triggered it. This way we can abort the connection if 5962 * the parameters get removed and keep the reference 5963 * count consistent once the connection is established. 5964 */ 5965 5966 if (!params->explicit_connect) 5967 params->conn = hci_conn_get(conn); 5968 5969 return conn; 5970 } 5971 5972 switch (PTR_ERR(conn)) { 5973 case -EBUSY: 5974 /* If hci_connect() returns -EBUSY it means there is already 5975 * an LE connection attempt going on. Since controllers don't 5976 * support more than one connection attempt at the time, we 5977 * don't consider this an error case. 5978 */ 5979 break; 5980 default: 5981 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 5982 return NULL; 5983 } 5984 5985 return NULL; 5986 } 5987 5988 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 5989 u8 bdaddr_type, bdaddr_t *direct_addr, 5990 u8 direct_addr_type, u8 phy, u8 sec_phy, s8 rssi, 5991 u8 *data, u8 len, bool ext_adv, bool ctl_time, 5992 u64 instant) 5993 { 5994 struct discovery_state *d = &hdev->discovery; 5995 struct smp_irk *irk; 5996 struct hci_conn *conn; 5997 bool match, bdaddr_resolved; 5998 u32 flags; 5999 u8 *ptr; 6000 6001 switch (type) { 6002 case LE_ADV_IND: 6003 case LE_ADV_DIRECT_IND: 6004 case LE_ADV_SCAN_IND: 6005 case LE_ADV_NONCONN_IND: 6006 case LE_ADV_SCAN_RSP: 6007 break; 6008 default: 6009 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6010 "type: 0x%02x", type); 6011 return; 6012 } 6013 6014 if (len > max_adv_len(hdev)) { 6015 bt_dev_err_ratelimited(hdev, 6016 "adv larger than maximum supported"); 6017 return; 6018 } 6019 6020 /* Find the end of the data in case the report contains padded zero 6021 * bytes at the end causing an invalid length value. 6022 * 6023 * When data is NULL, len is 0 so there is no need for extra ptr 6024 * check as 'ptr < data + 0' is already false in such case. 6025 */ 6026 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6027 if (ptr + 1 + *ptr > data + len) 6028 break; 6029 } 6030 6031 /* Adjust for actual length. This handles the case when remote 6032 * device is advertising with incorrect data length. 6033 */ 6034 len = ptr - data; 6035 6036 /* If the direct address is present, then this report is from 6037 * a LE Direct Advertising Report event. In that case it is 6038 * important to see if the address is matching the local 6039 * controller address. 6040 */ 6041 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6042 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6043 &bdaddr_resolved); 6044 6045 /* Only resolvable random addresses are valid for these 6046 * kind of reports and others can be ignored. 6047 */ 6048 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6049 return; 6050 6051 /* If the controller is not using resolvable random 6052 * addresses, then this report can be ignored. 6053 */ 6054 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6055 return; 6056 6057 /* If the local IRK of the controller does not match 6058 * with the resolvable random address provided, then 6059 * this report can be ignored. 6060 */ 6061 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6062 return; 6063 } 6064 6065 /* Check if we need to convert to identity address */ 6066 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6067 if (irk) { 6068 bdaddr = &irk->bdaddr; 6069 bdaddr_type = irk->addr_type; 6070 } 6071 6072 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6073 6074 /* Check if we have been requested to connect to this device. 6075 * 6076 * direct_addr is set only for directed advertising reports (it is NULL 6077 * for advertising reports) and is already verified to be RPA above. 6078 */ 6079 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6080 type, phy, sec_phy); 6081 if (!ext_adv && conn && type == LE_ADV_IND && 6082 len <= max_adv_len(hdev)) { 6083 /* Store report for later inclusion by 6084 * mgmt_device_connected 6085 */ 6086 memcpy(conn->le_adv_data, data, len); 6087 conn->le_adv_data_len = len; 6088 } 6089 6090 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6091 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6092 else 6093 flags = 0; 6094 6095 /* All scan results should be sent up for Mesh systems */ 6096 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6097 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6098 rssi, flags, data, len, NULL, 0, instant); 6099 return; 6100 } 6101 6102 /* Passive scanning shouldn't trigger any device found events, 6103 * except for devices marked as CONN_REPORT for which we do send 6104 * device found events, or advertisement monitoring requested. 6105 */ 6106 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6107 if (type == LE_ADV_DIRECT_IND) 6108 return; 6109 6110 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6111 bdaddr, bdaddr_type) && 6112 idr_is_empty(&hdev->adv_monitors_idr)) 6113 return; 6114 6115 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6116 rssi, flags, data, len, NULL, 0, 0); 6117 return; 6118 } 6119 6120 /* When receiving a scan response, then there is no way to 6121 * know if the remote device is connectable or not. However 6122 * since scan responses are merged with a previously seen 6123 * advertising report, the flags field from that report 6124 * will be used. 6125 * 6126 * In the unlikely case that a controller just sends a scan 6127 * response event that doesn't match the pending report, then 6128 * it is marked as a standalone SCAN_RSP. 6129 */ 6130 if (type == LE_ADV_SCAN_RSP) 6131 flags = MGMT_DEV_FOUND_SCAN_RSP; 6132 6133 /* If there's nothing pending either store the data from this 6134 * event or send an immediate device found event if the data 6135 * should not be stored for later. 6136 */ 6137 if (!ext_adv && !has_pending_adv_report(hdev)) { 6138 /* If the report will trigger a SCAN_REQ store it for 6139 * later merging. 6140 */ 6141 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6142 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6143 rssi, flags, data, len); 6144 return; 6145 } 6146 6147 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6148 rssi, flags, data, len, NULL, 0, 0); 6149 return; 6150 } 6151 6152 /* Check if the pending report is for the same device as the new one */ 6153 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6154 bdaddr_type == d->last_adv_addr_type); 6155 6156 /* If the pending data doesn't match this report or this isn't a 6157 * scan response (e.g. we got a duplicate ADV_IND) then force 6158 * sending of the pending data. 6159 */ 6160 if (type != LE_ADV_SCAN_RSP || !match) { 6161 /* Send out whatever is in the cache, but skip duplicates */ 6162 if (!match) 6163 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6164 d->last_adv_addr_type, NULL, 6165 d->last_adv_rssi, d->last_adv_flags, 6166 d->last_adv_data, 6167 d->last_adv_data_len, NULL, 0, 0); 6168 6169 /* If the new report will trigger a SCAN_REQ store it for 6170 * later merging. 6171 */ 6172 if (!ext_adv && (type == LE_ADV_IND || 6173 type == LE_ADV_SCAN_IND)) { 6174 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6175 rssi, flags, data, len); 6176 return; 6177 } 6178 6179 /* The advertising reports cannot be merged, so clear 6180 * the pending report and send out a device found event. 6181 */ 6182 clear_pending_adv_report(hdev); 6183 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6184 rssi, flags, data, len, NULL, 0, 0); 6185 return; 6186 } 6187 6188 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6189 * the new event is a SCAN_RSP. We can therefore proceed with 6190 * sending a merged device found event. 6191 */ 6192 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6193 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6194 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6195 clear_pending_adv_report(hdev); 6196 } 6197 6198 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6199 struct sk_buff *skb) 6200 { 6201 struct hci_ev_le_advertising_report *ev = data; 6202 u64 instant = jiffies; 6203 6204 if (!ev->num) 6205 return; 6206 6207 hci_dev_lock(hdev); 6208 6209 while (ev->num--) { 6210 struct hci_ev_le_advertising_info *info; 6211 s8 rssi; 6212 6213 info = hci_le_ev_skb_pull(hdev, skb, 6214 HCI_EV_LE_ADVERTISING_REPORT, 6215 sizeof(*info)); 6216 if (!info) 6217 break; 6218 6219 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6220 info->length + 1)) 6221 break; 6222 6223 if (info->length <= max_adv_len(hdev)) { 6224 rssi = info->data[info->length]; 6225 process_adv_report(hdev, info->type, &info->bdaddr, 6226 info->bdaddr_type, NULL, 0, 6227 HCI_ADV_PHY_1M, 0, rssi, 6228 info->data, info->length, false, 6229 false, instant); 6230 } else { 6231 bt_dev_err(hdev, "Dropping invalid advertising data"); 6232 } 6233 } 6234 6235 hci_dev_unlock(hdev); 6236 } 6237 6238 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6239 { 6240 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6241 switch (evt_type) { 6242 case LE_LEGACY_ADV_IND: 6243 return LE_ADV_IND; 6244 case LE_LEGACY_ADV_DIRECT_IND: 6245 return LE_ADV_DIRECT_IND; 6246 case LE_LEGACY_ADV_SCAN_IND: 6247 return LE_ADV_SCAN_IND; 6248 case LE_LEGACY_NONCONN_IND: 6249 return LE_ADV_NONCONN_IND; 6250 case LE_LEGACY_SCAN_RSP_ADV: 6251 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6252 return LE_ADV_SCAN_RSP; 6253 } 6254 6255 goto invalid; 6256 } 6257 6258 if (evt_type & LE_EXT_ADV_CONN_IND) { 6259 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6260 return LE_ADV_DIRECT_IND; 6261 6262 return LE_ADV_IND; 6263 } 6264 6265 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6266 return LE_ADV_SCAN_RSP; 6267 6268 if (evt_type & LE_EXT_ADV_SCAN_IND) 6269 return LE_ADV_SCAN_IND; 6270 6271 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6272 evt_type & LE_EXT_ADV_DIRECT_IND) 6273 return LE_ADV_NONCONN_IND; 6274 6275 invalid: 6276 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6277 evt_type); 6278 6279 return LE_ADV_INVALID; 6280 } 6281 6282 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6283 struct sk_buff *skb) 6284 { 6285 struct hci_ev_le_ext_adv_report *ev = data; 6286 u64 instant = jiffies; 6287 6288 if (!ev->num) 6289 return; 6290 6291 hci_dev_lock(hdev); 6292 6293 while (ev->num--) { 6294 struct hci_ev_le_ext_adv_info *info; 6295 u8 legacy_evt_type; 6296 u16 evt_type; 6297 6298 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6299 sizeof(*info)); 6300 if (!info) 6301 break; 6302 6303 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6304 info->length)) 6305 break; 6306 6307 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6308 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6309 6310 if (test_bit(HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_PHY, 6311 &hdev->quirks)) { 6312 info->primary_phy &= 0x1f; 6313 info->secondary_phy &= 0x1f; 6314 } 6315 6316 if (legacy_evt_type != LE_ADV_INVALID) { 6317 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6318 info->bdaddr_type, NULL, 0, 6319 info->primary_phy, 6320 info->secondary_phy, 6321 info->rssi, info->data, info->length, 6322 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6323 false, instant); 6324 } 6325 } 6326 6327 hci_dev_unlock(hdev); 6328 } 6329 6330 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6331 { 6332 struct hci_cp_le_pa_term_sync cp; 6333 6334 memset(&cp, 0, sizeof(cp)); 6335 cp.handle = handle; 6336 6337 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6338 } 6339 6340 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6341 struct sk_buff *skb) 6342 { 6343 struct hci_ev_le_pa_sync_established *ev = data; 6344 int mask = hdev->link_mode; 6345 __u8 flags = 0; 6346 struct hci_conn *pa_sync; 6347 6348 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6349 6350 hci_dev_lock(hdev); 6351 6352 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6353 6354 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6355 if (!(mask & HCI_LM_ACCEPT)) { 6356 hci_le_pa_term_sync(hdev, ev->handle); 6357 goto unlock; 6358 } 6359 6360 if (!(flags & HCI_PROTO_DEFER)) 6361 goto unlock; 6362 6363 /* Add connection to indicate PA sync event */ 6364 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 6365 HCI_ROLE_SLAVE); 6366 6367 if (IS_ERR(pa_sync)) 6368 goto unlock; 6369 6370 pa_sync->sync_handle = le16_to_cpu(ev->handle); 6371 6372 if (ev->status) { 6373 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6374 6375 /* Notify iso layer */ 6376 hci_connect_cfm(pa_sync, ev->status); 6377 } 6378 6379 unlock: 6380 hci_dev_unlock(hdev); 6381 } 6382 6383 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6384 struct sk_buff *skb) 6385 { 6386 struct hci_ev_le_per_adv_report *ev = data; 6387 int mask = hdev->link_mode; 6388 __u8 flags = 0; 6389 struct hci_conn *pa_sync; 6390 6391 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6392 6393 hci_dev_lock(hdev); 6394 6395 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 6396 if (!(mask & HCI_LM_ACCEPT)) 6397 goto unlock; 6398 6399 if (!(flags & HCI_PROTO_DEFER)) 6400 goto unlock; 6401 6402 pa_sync = hci_conn_hash_lookup_pa_sync_handle 6403 (hdev, 6404 le16_to_cpu(ev->sync_handle)); 6405 6406 if (!pa_sync) 6407 goto unlock; 6408 6409 if (ev->data_status == LE_PA_DATA_COMPLETE && 6410 !test_and_set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags)) { 6411 /* Notify iso layer */ 6412 hci_connect_cfm(pa_sync, 0); 6413 6414 /* Notify MGMT layer */ 6415 mgmt_device_connected(hdev, pa_sync, NULL, 0); 6416 } 6417 6418 unlock: 6419 hci_dev_unlock(hdev); 6420 } 6421 6422 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6423 struct sk_buff *skb) 6424 { 6425 struct hci_ev_le_remote_feat_complete *ev = data; 6426 struct hci_conn *conn; 6427 6428 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6429 6430 hci_dev_lock(hdev); 6431 6432 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6433 if (conn) { 6434 if (!ev->status) 6435 memcpy(conn->features[0], ev->features, 8); 6436 6437 if (conn->state == BT_CONFIG) { 6438 __u8 status; 6439 6440 /* If the local controller supports peripheral-initiated 6441 * features exchange, but the remote controller does 6442 * not, then it is possible that the error code 0x1a 6443 * for unsupported remote feature gets returned. 6444 * 6445 * In this specific case, allow the connection to 6446 * transition into connected state and mark it as 6447 * successful. 6448 */ 6449 if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && 6450 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6451 status = 0x00; 6452 else 6453 status = ev->status; 6454 6455 conn->state = BT_CONNECTED; 6456 hci_connect_cfm(conn, status); 6457 hci_conn_drop(conn); 6458 } 6459 } 6460 6461 hci_dev_unlock(hdev); 6462 } 6463 6464 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6465 struct sk_buff *skb) 6466 { 6467 struct hci_ev_le_ltk_req *ev = data; 6468 struct hci_cp_le_ltk_reply cp; 6469 struct hci_cp_le_ltk_neg_reply neg; 6470 struct hci_conn *conn; 6471 struct smp_ltk *ltk; 6472 6473 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6474 6475 hci_dev_lock(hdev); 6476 6477 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6478 if (conn == NULL) 6479 goto not_found; 6480 6481 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6482 if (!ltk) 6483 goto not_found; 6484 6485 if (smp_ltk_is_sc(ltk)) { 6486 /* With SC both EDiv and Rand are set to zero */ 6487 if (ev->ediv || ev->rand) 6488 goto not_found; 6489 } else { 6490 /* For non-SC keys check that EDiv and Rand match */ 6491 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6492 goto not_found; 6493 } 6494 6495 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6496 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6497 cp.handle = cpu_to_le16(conn->handle); 6498 6499 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6500 6501 conn->enc_key_size = ltk->enc_size; 6502 6503 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6504 6505 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6506 * temporary key used to encrypt a connection following 6507 * pairing. It is used during the Encrypted Session Setup to 6508 * distribute the keys. Later, security can be re-established 6509 * using a distributed LTK. 6510 */ 6511 if (ltk->type == SMP_STK) { 6512 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6513 list_del_rcu(<k->list); 6514 kfree_rcu(ltk, rcu); 6515 } else { 6516 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6517 } 6518 6519 hci_dev_unlock(hdev); 6520 6521 return; 6522 6523 not_found: 6524 neg.handle = ev->handle; 6525 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6526 hci_dev_unlock(hdev); 6527 } 6528 6529 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6530 u8 reason) 6531 { 6532 struct hci_cp_le_conn_param_req_neg_reply cp; 6533 6534 cp.handle = cpu_to_le16(handle); 6535 cp.reason = reason; 6536 6537 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6538 &cp); 6539 } 6540 6541 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6542 struct sk_buff *skb) 6543 { 6544 struct hci_ev_le_remote_conn_param_req *ev = data; 6545 struct hci_cp_le_conn_param_req_reply cp; 6546 struct hci_conn *hcon; 6547 u16 handle, min, max, latency, timeout; 6548 6549 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6550 6551 handle = le16_to_cpu(ev->handle); 6552 min = le16_to_cpu(ev->interval_min); 6553 max = le16_to_cpu(ev->interval_max); 6554 latency = le16_to_cpu(ev->latency); 6555 timeout = le16_to_cpu(ev->timeout); 6556 6557 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6558 if (!hcon || hcon->state != BT_CONNECTED) 6559 return send_conn_param_neg_reply(hdev, handle, 6560 HCI_ERROR_UNKNOWN_CONN_ID); 6561 6562 if (max > hcon->le_conn_max_interval) 6563 return send_conn_param_neg_reply(hdev, handle, 6564 HCI_ERROR_INVALID_LL_PARAMS); 6565 6566 if (hci_check_conn_params(min, max, latency, timeout)) 6567 return send_conn_param_neg_reply(hdev, handle, 6568 HCI_ERROR_INVALID_LL_PARAMS); 6569 6570 if (hcon->role == HCI_ROLE_MASTER) { 6571 struct hci_conn_params *params; 6572 u8 store_hint; 6573 6574 hci_dev_lock(hdev); 6575 6576 params = hci_conn_params_lookup(hdev, &hcon->dst, 6577 hcon->dst_type); 6578 if (params) { 6579 params->conn_min_interval = min; 6580 params->conn_max_interval = max; 6581 params->conn_latency = latency; 6582 params->supervision_timeout = timeout; 6583 store_hint = 0x01; 6584 } else { 6585 store_hint = 0x00; 6586 } 6587 6588 hci_dev_unlock(hdev); 6589 6590 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6591 store_hint, min, max, latency, timeout); 6592 } 6593 6594 cp.handle = ev->handle; 6595 cp.interval_min = ev->interval_min; 6596 cp.interval_max = ev->interval_max; 6597 cp.latency = ev->latency; 6598 cp.timeout = ev->timeout; 6599 cp.min_ce_len = 0; 6600 cp.max_ce_len = 0; 6601 6602 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6603 } 6604 6605 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6606 struct sk_buff *skb) 6607 { 6608 struct hci_ev_le_direct_adv_report *ev = data; 6609 u64 instant = jiffies; 6610 int i; 6611 6612 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6613 flex_array_size(ev, info, ev->num))) 6614 return; 6615 6616 if (!ev->num) 6617 return; 6618 6619 hci_dev_lock(hdev); 6620 6621 for (i = 0; i < ev->num; i++) { 6622 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6623 6624 process_adv_report(hdev, info->type, &info->bdaddr, 6625 info->bdaddr_type, &info->direct_addr, 6626 info->direct_addr_type, HCI_ADV_PHY_1M, 0, 6627 info->rssi, NULL, 0, false, false, instant); 6628 } 6629 6630 hci_dev_unlock(hdev); 6631 } 6632 6633 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6634 struct sk_buff *skb) 6635 { 6636 struct hci_ev_le_phy_update_complete *ev = data; 6637 struct hci_conn *conn; 6638 6639 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6640 6641 if (ev->status) 6642 return; 6643 6644 hci_dev_lock(hdev); 6645 6646 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6647 if (!conn) 6648 goto unlock; 6649 6650 conn->le_tx_phy = ev->tx_phy; 6651 conn->le_rx_phy = ev->rx_phy; 6652 6653 unlock: 6654 hci_dev_unlock(hdev); 6655 } 6656 6657 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6658 struct sk_buff *skb) 6659 { 6660 struct hci_evt_le_cis_established *ev = data; 6661 struct hci_conn *conn; 6662 struct bt_iso_qos *qos; 6663 bool pending = false; 6664 u16 handle = __le16_to_cpu(ev->handle); 6665 u32 c_sdu_interval, p_sdu_interval; 6666 6667 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6668 6669 hci_dev_lock(hdev); 6670 6671 conn = hci_conn_hash_lookup_handle(hdev, handle); 6672 if (!conn) { 6673 bt_dev_err(hdev, 6674 "Unable to find connection with handle 0x%4.4x", 6675 handle); 6676 goto unlock; 6677 } 6678 6679 if (conn->type != ISO_LINK) { 6680 bt_dev_err(hdev, 6681 "Invalid connection link type handle 0x%4.4x", 6682 handle); 6683 goto unlock; 6684 } 6685 6686 qos = &conn->iso_qos; 6687 6688 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6689 6690 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 6, Part G 6691 * page 3075: 6692 * Transport_Latency_C_To_P = CIG_Sync_Delay + (FT_C_To_P) × 6693 * ISO_Interval + SDU_Interval_C_To_P 6694 * ... 6695 * SDU_Interval = (CIG_Sync_Delay + (FT) x ISO_Interval) - 6696 * Transport_Latency 6697 */ 6698 c_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6699 (ev->c_ft * le16_to_cpu(ev->interval) * 1250)) - 6700 get_unaligned_le24(ev->c_latency); 6701 p_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6702 (ev->p_ft * le16_to_cpu(ev->interval) * 1250)) - 6703 get_unaligned_le24(ev->p_latency); 6704 6705 switch (conn->role) { 6706 case HCI_ROLE_SLAVE: 6707 qos->ucast.in.interval = c_sdu_interval; 6708 qos->ucast.out.interval = p_sdu_interval; 6709 /* Convert Transport Latency (us) to Latency (msec) */ 6710 qos->ucast.in.latency = 6711 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6712 1000); 6713 qos->ucast.out.latency = 6714 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6715 1000); 6716 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6717 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6718 qos->ucast.in.phy = ev->c_phy; 6719 qos->ucast.out.phy = ev->p_phy; 6720 break; 6721 case HCI_ROLE_MASTER: 6722 qos->ucast.in.interval = p_sdu_interval; 6723 qos->ucast.out.interval = c_sdu_interval; 6724 /* Convert Transport Latency (us) to Latency (msec) */ 6725 qos->ucast.out.latency = 6726 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6727 1000); 6728 qos->ucast.in.latency = 6729 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6730 1000); 6731 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6732 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6733 qos->ucast.out.phy = ev->c_phy; 6734 qos->ucast.in.phy = ev->p_phy; 6735 break; 6736 } 6737 6738 if (!ev->status) { 6739 conn->state = BT_CONNECTED; 6740 hci_debugfs_create_conn(conn); 6741 hci_conn_add_sysfs(conn); 6742 hci_iso_setup_path(conn); 6743 goto unlock; 6744 } 6745 6746 conn->state = BT_CLOSED; 6747 hci_connect_cfm(conn, ev->status); 6748 hci_conn_del(conn); 6749 6750 unlock: 6751 if (pending) 6752 hci_le_create_cis_pending(hdev); 6753 6754 hci_dev_unlock(hdev); 6755 } 6756 6757 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6758 { 6759 struct hci_cp_le_reject_cis cp; 6760 6761 memset(&cp, 0, sizeof(cp)); 6762 cp.handle = handle; 6763 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6764 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6765 } 6766 6767 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6768 { 6769 struct hci_cp_le_accept_cis cp; 6770 6771 memset(&cp, 0, sizeof(cp)); 6772 cp.handle = handle; 6773 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6774 } 6775 6776 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6777 struct sk_buff *skb) 6778 { 6779 struct hci_evt_le_cis_req *ev = data; 6780 u16 acl_handle, cis_handle; 6781 struct hci_conn *acl, *cis; 6782 int mask; 6783 __u8 flags = 0; 6784 6785 acl_handle = __le16_to_cpu(ev->acl_handle); 6786 cis_handle = __le16_to_cpu(ev->cis_handle); 6787 6788 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6789 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6790 6791 hci_dev_lock(hdev); 6792 6793 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6794 if (!acl) 6795 goto unlock; 6796 6797 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 6798 if (!(mask & HCI_LM_ACCEPT)) { 6799 hci_le_reject_cis(hdev, ev->cis_handle); 6800 goto unlock; 6801 } 6802 6803 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6804 if (!cis) { 6805 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE, 6806 cis_handle); 6807 if (IS_ERR(cis)) { 6808 hci_le_reject_cis(hdev, ev->cis_handle); 6809 goto unlock; 6810 } 6811 } 6812 6813 cis->iso_qos.ucast.cig = ev->cig_id; 6814 cis->iso_qos.ucast.cis = ev->cis_id; 6815 6816 if (!(flags & HCI_PROTO_DEFER)) { 6817 hci_le_accept_cis(hdev, ev->cis_handle); 6818 } else { 6819 cis->state = BT_CONNECT2; 6820 hci_connect_cfm(cis, 0); 6821 } 6822 6823 unlock: 6824 hci_dev_unlock(hdev); 6825 } 6826 6827 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 6828 { 6829 u8 handle = PTR_UINT(data); 6830 6831 return hci_le_terminate_big_sync(hdev, handle, 6832 HCI_ERROR_LOCAL_HOST_TERM); 6833 } 6834 6835 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6836 struct sk_buff *skb) 6837 { 6838 struct hci_evt_le_create_big_complete *ev = data; 6839 struct hci_conn *conn; 6840 __u8 i = 0; 6841 6842 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6843 6844 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6845 flex_array_size(ev, bis_handle, ev->num_bis))) 6846 return; 6847 6848 hci_dev_lock(hdev); 6849 rcu_read_lock(); 6850 6851 /* Connect all BISes that are bound to the BIG */ 6852 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) { 6853 if (bacmp(&conn->dst, BDADDR_ANY) || 6854 conn->type != ISO_LINK || 6855 conn->iso_qos.bcast.big != ev->handle) 6856 continue; 6857 6858 if (hci_conn_set_handle(conn, 6859 __le16_to_cpu(ev->bis_handle[i++]))) 6860 continue; 6861 6862 if (!ev->status) { 6863 conn->state = BT_CONNECTED; 6864 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 6865 rcu_read_unlock(); 6866 hci_debugfs_create_conn(conn); 6867 hci_conn_add_sysfs(conn); 6868 hci_iso_setup_path(conn); 6869 rcu_read_lock(); 6870 continue; 6871 } 6872 6873 hci_connect_cfm(conn, ev->status); 6874 rcu_read_unlock(); 6875 hci_conn_del(conn); 6876 rcu_read_lock(); 6877 } 6878 6879 rcu_read_unlock(); 6880 6881 if (!ev->status && !i) 6882 /* If no BISes have been connected for the BIG, 6883 * terminate. This is in case all bound connections 6884 * have been closed before the BIG creation 6885 * has completed. 6886 */ 6887 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 6888 UINT_PTR(ev->handle), NULL); 6889 6890 hci_dev_unlock(hdev); 6891 } 6892 6893 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6894 struct sk_buff *skb) 6895 { 6896 struct hci_evt_le_big_sync_estabilished *ev = data; 6897 struct hci_conn *bis; 6898 int i; 6899 6900 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6901 6902 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 6903 flex_array_size(ev, bis, ev->num_bis))) 6904 return; 6905 6906 hci_dev_lock(hdev); 6907 6908 for (i = 0; i < ev->num_bis; i++) { 6909 u16 handle = le16_to_cpu(ev->bis[i]); 6910 __le32 interval; 6911 6912 bis = hci_conn_hash_lookup_handle(hdev, handle); 6913 if (!bis) { 6914 if (handle > HCI_CONN_HANDLE_MAX) { 6915 bt_dev_dbg(hdev, "ignore too large handle %u", handle); 6916 continue; 6917 } 6918 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 6919 HCI_ROLE_SLAVE, handle); 6920 if (IS_ERR(bis)) 6921 continue; 6922 } 6923 6924 if (ev->status != 0x42) 6925 /* Mark PA sync as established */ 6926 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 6927 6928 bis->iso_qos.bcast.big = ev->handle; 6929 memset(&interval, 0, sizeof(interval)); 6930 memcpy(&interval, ev->latency, sizeof(ev->latency)); 6931 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 6932 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 6933 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 6934 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 6935 6936 if (!ev->status) { 6937 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 6938 hci_iso_setup_path(bis); 6939 } 6940 } 6941 6942 /* In case BIG sync failed, notify each failed connection to 6943 * the user after all hci connections have been added 6944 */ 6945 if (ev->status) 6946 for (i = 0; i < ev->num_bis; i++) { 6947 u16 handle = le16_to_cpu(ev->bis[i]); 6948 6949 bis = hci_conn_hash_lookup_handle(hdev, handle); 6950 if (!bis) 6951 continue; 6952 6953 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 6954 hci_connect_cfm(bis, ev->status); 6955 } 6956 6957 hci_dev_unlock(hdev); 6958 } 6959 6960 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 6961 struct sk_buff *skb) 6962 { 6963 struct hci_evt_le_big_info_adv_report *ev = data; 6964 int mask = hdev->link_mode; 6965 __u8 flags = 0; 6966 struct hci_conn *pa_sync; 6967 6968 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6969 6970 hci_dev_lock(hdev); 6971 6972 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 6973 if (!(mask & HCI_LM_ACCEPT)) 6974 goto unlock; 6975 6976 if (!(flags & HCI_PROTO_DEFER)) 6977 goto unlock; 6978 6979 pa_sync = hci_conn_hash_lookup_pa_sync_handle 6980 (hdev, 6981 le16_to_cpu(ev->sync_handle)); 6982 6983 if (!pa_sync) 6984 goto unlock; 6985 6986 pa_sync->iso_qos.bcast.encryption = ev->encryption; 6987 6988 /* Notify iso layer */ 6989 hci_connect_cfm(pa_sync, 0); 6990 6991 unlock: 6992 hci_dev_unlock(hdev); 6993 } 6994 6995 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 6996 [_op] = { \ 6997 .func = _func, \ 6998 .min_len = _min_len, \ 6999 .max_len = _max_len, \ 7000 } 7001 7002 #define HCI_LE_EV(_op, _func, _len) \ 7003 HCI_LE_EV_VL(_op, _func, _len, _len) 7004 7005 #define HCI_LE_EV_STATUS(_op, _func) \ 7006 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7007 7008 /* Entries in this table shall have their position according to the subevent 7009 * opcode they handle so the use of the macros above is recommend since it does 7010 * attempt to initialize at its proper index using Designated Initializers that 7011 * way events without a callback function can be ommited. 7012 */ 7013 static const struct hci_le_ev { 7014 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7015 u16 min_len; 7016 u16 max_len; 7017 } hci_le_ev_table[U8_MAX + 1] = { 7018 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7019 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7020 sizeof(struct hci_ev_le_conn_complete)), 7021 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7022 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7023 sizeof(struct hci_ev_le_advertising_report), 7024 HCI_MAX_EVENT_SIZE), 7025 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7026 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7027 hci_le_conn_update_complete_evt, 7028 sizeof(struct hci_ev_le_conn_update_complete)), 7029 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7030 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7031 hci_le_remote_feat_complete_evt, 7032 sizeof(struct hci_ev_le_remote_feat_complete)), 7033 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7034 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7035 sizeof(struct hci_ev_le_ltk_req)), 7036 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7037 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7038 hci_le_remote_conn_param_req_evt, 7039 sizeof(struct hci_ev_le_remote_conn_param_req)), 7040 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7041 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7042 hci_le_enh_conn_complete_evt, 7043 sizeof(struct hci_ev_le_enh_conn_complete)), 7044 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7045 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7046 sizeof(struct hci_ev_le_direct_adv_report), 7047 HCI_MAX_EVENT_SIZE), 7048 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7049 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7050 sizeof(struct hci_ev_le_phy_update_complete)), 7051 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7052 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7053 sizeof(struct hci_ev_le_ext_adv_report), 7054 HCI_MAX_EVENT_SIZE), 7055 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7056 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7057 hci_le_pa_sync_estabilished_evt, 7058 sizeof(struct hci_ev_le_pa_sync_established)), 7059 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7060 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7061 hci_le_per_adv_report_evt, 7062 sizeof(struct hci_ev_le_per_adv_report), 7063 HCI_MAX_EVENT_SIZE), 7064 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7065 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7066 sizeof(struct hci_evt_le_ext_adv_set_term)), 7067 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7068 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7069 sizeof(struct hci_evt_le_cis_established)), 7070 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7071 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7072 sizeof(struct hci_evt_le_cis_req)), 7073 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7074 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7075 hci_le_create_big_complete_evt, 7076 sizeof(struct hci_evt_le_create_big_complete), 7077 HCI_MAX_EVENT_SIZE), 7078 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7079 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7080 hci_le_big_sync_established_evt, 7081 sizeof(struct hci_evt_le_big_sync_estabilished), 7082 HCI_MAX_EVENT_SIZE), 7083 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7084 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7085 hci_le_big_info_adv_report_evt, 7086 sizeof(struct hci_evt_le_big_info_adv_report), 7087 HCI_MAX_EVENT_SIZE), 7088 }; 7089 7090 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7091 struct sk_buff *skb, u16 *opcode, u8 *status, 7092 hci_req_complete_t *req_complete, 7093 hci_req_complete_skb_t *req_complete_skb) 7094 { 7095 struct hci_ev_le_meta *ev = data; 7096 const struct hci_le_ev *subev; 7097 7098 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7099 7100 /* Only match event if command OGF is for LE */ 7101 if (hdev->req_skb && 7102 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 && 7103 hci_skb_event(hdev->req_skb) == ev->subevent) { 7104 *opcode = hci_skb_opcode(hdev->req_skb); 7105 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7106 req_complete_skb); 7107 } 7108 7109 subev = &hci_le_ev_table[ev->subevent]; 7110 if (!subev->func) 7111 return; 7112 7113 if (skb->len < subev->min_len) { 7114 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7115 ev->subevent, skb->len, subev->min_len); 7116 return; 7117 } 7118 7119 /* Just warn if the length is over max_len size it still be 7120 * possible to partially parse the event so leave to callback to 7121 * decide if that is acceptable. 7122 */ 7123 if (skb->len > subev->max_len) 7124 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7125 ev->subevent, skb->len, subev->max_len); 7126 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7127 if (!data) 7128 return; 7129 7130 subev->func(hdev, data, skb); 7131 } 7132 7133 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7134 u8 event, struct sk_buff *skb) 7135 { 7136 struct hci_ev_cmd_complete *ev; 7137 struct hci_event_hdr *hdr; 7138 7139 if (!skb) 7140 return false; 7141 7142 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7143 if (!hdr) 7144 return false; 7145 7146 if (event) { 7147 if (hdr->evt != event) 7148 return false; 7149 return true; 7150 } 7151 7152 /* Check if request ended in Command Status - no way to retrieve 7153 * any extra parameters in this case. 7154 */ 7155 if (hdr->evt == HCI_EV_CMD_STATUS) 7156 return false; 7157 7158 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7159 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7160 hdr->evt); 7161 return false; 7162 } 7163 7164 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7165 if (!ev) 7166 return false; 7167 7168 if (opcode != __le16_to_cpu(ev->opcode)) { 7169 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7170 __le16_to_cpu(ev->opcode)); 7171 return false; 7172 } 7173 7174 return true; 7175 } 7176 7177 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7178 struct sk_buff *skb) 7179 { 7180 struct hci_ev_le_advertising_info *adv; 7181 struct hci_ev_le_direct_adv_info *direct_adv; 7182 struct hci_ev_le_ext_adv_info *ext_adv; 7183 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7184 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7185 7186 hci_dev_lock(hdev); 7187 7188 /* If we are currently suspended and this is the first BT event seen, 7189 * save the wake reason associated with the event. 7190 */ 7191 if (!hdev->suspended || hdev->wake_reason) 7192 goto unlock; 7193 7194 /* Default to remote wake. Values for wake_reason are documented in the 7195 * Bluez mgmt api docs. 7196 */ 7197 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7198 7199 /* Once configured for remote wakeup, we should only wake up for 7200 * reconnections. It's useful to see which device is waking us up so 7201 * keep track of the bdaddr of the connection event that woke us up. 7202 */ 7203 if (event == HCI_EV_CONN_REQUEST) { 7204 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7205 hdev->wake_addr_type = BDADDR_BREDR; 7206 } else if (event == HCI_EV_CONN_COMPLETE) { 7207 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7208 hdev->wake_addr_type = BDADDR_BREDR; 7209 } else if (event == HCI_EV_LE_META) { 7210 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7211 u8 subevent = le_ev->subevent; 7212 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7213 u8 num_reports = *ptr; 7214 7215 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7216 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7217 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7218 num_reports) { 7219 adv = (void *)(ptr + 1); 7220 direct_adv = (void *)(ptr + 1); 7221 ext_adv = (void *)(ptr + 1); 7222 7223 switch (subevent) { 7224 case HCI_EV_LE_ADVERTISING_REPORT: 7225 bacpy(&hdev->wake_addr, &adv->bdaddr); 7226 hdev->wake_addr_type = adv->bdaddr_type; 7227 break; 7228 case HCI_EV_LE_DIRECT_ADV_REPORT: 7229 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7230 hdev->wake_addr_type = direct_adv->bdaddr_type; 7231 break; 7232 case HCI_EV_LE_EXT_ADV_REPORT: 7233 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7234 hdev->wake_addr_type = ext_adv->bdaddr_type; 7235 break; 7236 } 7237 } 7238 } else { 7239 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7240 } 7241 7242 unlock: 7243 hci_dev_unlock(hdev); 7244 } 7245 7246 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7247 [_op] = { \ 7248 .req = false, \ 7249 .func = _func, \ 7250 .min_len = _min_len, \ 7251 .max_len = _max_len, \ 7252 } 7253 7254 #define HCI_EV(_op, _func, _len) \ 7255 HCI_EV_VL(_op, _func, _len, _len) 7256 7257 #define HCI_EV_STATUS(_op, _func) \ 7258 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7259 7260 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7261 [_op] = { \ 7262 .req = true, \ 7263 .func_req = _func, \ 7264 .min_len = _min_len, \ 7265 .max_len = _max_len, \ 7266 } 7267 7268 #define HCI_EV_REQ(_op, _func, _len) \ 7269 HCI_EV_REQ_VL(_op, _func, _len, _len) 7270 7271 /* Entries in this table shall have their position according to the event opcode 7272 * they handle so the use of the macros above is recommend since it does attempt 7273 * to initialize at its proper index using Designated Initializers that way 7274 * events without a callback function don't have entered. 7275 */ 7276 static const struct hci_ev { 7277 bool req; 7278 union { 7279 void (*func)(struct hci_dev *hdev, void *data, 7280 struct sk_buff *skb); 7281 void (*func_req)(struct hci_dev *hdev, void *data, 7282 struct sk_buff *skb, u16 *opcode, u8 *status, 7283 hci_req_complete_t *req_complete, 7284 hci_req_complete_skb_t *req_complete_skb); 7285 }; 7286 u16 min_len; 7287 u16 max_len; 7288 } hci_ev_table[U8_MAX + 1] = { 7289 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7290 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7291 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7292 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7293 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7294 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7295 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7296 sizeof(struct hci_ev_conn_complete)), 7297 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7298 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7299 sizeof(struct hci_ev_conn_request)), 7300 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7301 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7302 sizeof(struct hci_ev_disconn_complete)), 7303 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7304 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7305 sizeof(struct hci_ev_auth_complete)), 7306 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7307 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7308 sizeof(struct hci_ev_remote_name)), 7309 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7310 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7311 sizeof(struct hci_ev_encrypt_change)), 7312 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7313 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7314 hci_change_link_key_complete_evt, 7315 sizeof(struct hci_ev_change_link_key_complete)), 7316 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7317 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7318 sizeof(struct hci_ev_remote_features)), 7319 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7320 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7321 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7322 /* [0x0f = HCI_EV_CMD_STATUS] */ 7323 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7324 sizeof(struct hci_ev_cmd_status)), 7325 /* [0x10 = HCI_EV_CMD_STATUS] */ 7326 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7327 sizeof(struct hci_ev_hardware_error)), 7328 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7329 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7330 sizeof(struct hci_ev_role_change)), 7331 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7332 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7333 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7334 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7335 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7336 sizeof(struct hci_ev_mode_change)), 7337 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7338 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7339 sizeof(struct hci_ev_pin_code_req)), 7340 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7341 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7342 sizeof(struct hci_ev_link_key_req)), 7343 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7344 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7345 sizeof(struct hci_ev_link_key_notify)), 7346 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7347 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7348 sizeof(struct hci_ev_clock_offset)), 7349 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7350 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7351 sizeof(struct hci_ev_pkt_type_change)), 7352 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7353 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7354 sizeof(struct hci_ev_pscan_rep_mode)), 7355 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7356 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7357 hci_inquiry_result_with_rssi_evt, 7358 sizeof(struct hci_ev_inquiry_result_rssi), 7359 HCI_MAX_EVENT_SIZE), 7360 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7361 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7362 sizeof(struct hci_ev_remote_ext_features)), 7363 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7364 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7365 sizeof(struct hci_ev_sync_conn_complete)), 7366 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7367 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7368 hci_extended_inquiry_result_evt, 7369 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7370 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7371 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7372 sizeof(struct hci_ev_key_refresh_complete)), 7373 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7374 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7375 sizeof(struct hci_ev_io_capa_request)), 7376 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7377 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7378 sizeof(struct hci_ev_io_capa_reply)), 7379 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7380 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7381 sizeof(struct hci_ev_user_confirm_req)), 7382 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7383 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7384 sizeof(struct hci_ev_user_passkey_req)), 7385 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7386 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7387 sizeof(struct hci_ev_remote_oob_data_request)), 7388 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7389 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7390 sizeof(struct hci_ev_simple_pair_complete)), 7391 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7392 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7393 sizeof(struct hci_ev_user_passkey_notify)), 7394 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7395 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7396 sizeof(struct hci_ev_keypress_notify)), 7397 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7398 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7399 sizeof(struct hci_ev_remote_host_features)), 7400 /* [0x3e = HCI_EV_LE_META] */ 7401 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7402 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7403 /* [0xff = HCI_EV_VENDOR] */ 7404 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7405 }; 7406 7407 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7408 u16 *opcode, u8 *status, 7409 hci_req_complete_t *req_complete, 7410 hci_req_complete_skb_t *req_complete_skb) 7411 { 7412 const struct hci_ev *ev = &hci_ev_table[event]; 7413 void *data; 7414 7415 if (!ev->func) 7416 return; 7417 7418 if (skb->len < ev->min_len) { 7419 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7420 event, skb->len, ev->min_len); 7421 return; 7422 } 7423 7424 /* Just warn if the length is over max_len size it still be 7425 * possible to partially parse the event so leave to callback to 7426 * decide if that is acceptable. 7427 */ 7428 if (skb->len > ev->max_len) 7429 bt_dev_warn_ratelimited(hdev, 7430 "unexpected event 0x%2.2x length: %u > %u", 7431 event, skb->len, ev->max_len); 7432 7433 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7434 if (!data) 7435 return; 7436 7437 if (ev->req) 7438 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7439 req_complete_skb); 7440 else 7441 ev->func(hdev, data, skb); 7442 } 7443 7444 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7445 { 7446 struct hci_event_hdr *hdr = (void *) skb->data; 7447 hci_req_complete_t req_complete = NULL; 7448 hci_req_complete_skb_t req_complete_skb = NULL; 7449 struct sk_buff *orig_skb = NULL; 7450 u8 status = 0, event, req_evt = 0; 7451 u16 opcode = HCI_OP_NOP; 7452 7453 if (skb->len < sizeof(*hdr)) { 7454 bt_dev_err(hdev, "Malformed HCI Event"); 7455 goto done; 7456 } 7457 7458 kfree_skb(hdev->recv_event); 7459 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7460 7461 event = hdr->evt; 7462 if (!event) { 7463 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7464 event); 7465 goto done; 7466 } 7467 7468 /* Only match event if command OGF is not for LE */ 7469 if (hdev->req_skb && 7470 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && 7471 hci_skb_event(hdev->req_skb) == event) { 7472 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), 7473 status, &req_complete, &req_complete_skb); 7474 req_evt = event; 7475 } 7476 7477 /* If it looks like we might end up having to call 7478 * req_complete_skb, store a pristine copy of the skb since the 7479 * various handlers may modify the original one through 7480 * skb_pull() calls, etc. 7481 */ 7482 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7483 event == HCI_EV_CMD_COMPLETE) 7484 orig_skb = skb_clone(skb, GFP_KERNEL); 7485 7486 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7487 7488 /* Store wake reason if we're suspended */ 7489 hci_store_wake_reason(hdev, event, skb); 7490 7491 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7492 7493 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7494 &req_complete_skb); 7495 7496 if (req_complete) { 7497 req_complete(hdev, status, opcode); 7498 } else if (req_complete_skb) { 7499 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7500 kfree_skb(orig_skb); 7501 orig_skb = NULL; 7502 } 7503 req_complete_skb(hdev, status, opcode, orig_skb); 7504 } 7505 7506 done: 7507 kfree_skb(orig_skb); 7508 kfree_skb(skb); 7509 hdev->stat.evt_rx++; 7510 } 7511