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 /* Re-enable passive scanning if disconnected device is marked 3395 * as auto-connectable. 3396 */ 3397 if (conn->type == LE_LINK) { 3398 params = hci_conn_params_lookup(hdev, &conn->dst, 3399 conn->dst_type); 3400 if (params) { 3401 switch (params->auto_connect) { 3402 case HCI_AUTO_CONN_LINK_LOSS: 3403 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3404 break; 3405 fallthrough; 3406 3407 case HCI_AUTO_CONN_DIRECT: 3408 case HCI_AUTO_CONN_ALWAYS: 3409 hci_pend_le_list_del_init(params); 3410 hci_pend_le_list_add(params, 3411 &hdev->pend_le_conns); 3412 hci_update_passive_scan(hdev); 3413 break; 3414 3415 default: 3416 break; 3417 } 3418 } 3419 } 3420 3421 hci_disconn_cfm(conn, ev->reason); 3422 3423 /* Re-enable advertising if necessary, since it might 3424 * have been disabled by the connection. From the 3425 * HCI_LE_Set_Advertise_Enable command description in 3426 * the core specification (v4.0): 3427 * "The Controller shall continue advertising until the Host 3428 * issues an LE_Set_Advertise_Enable command with 3429 * Advertising_Enable set to 0x00 (Advertising is disabled) 3430 * or until a connection is created or until the Advertising 3431 * is timed out due to Directed Advertising." 3432 */ 3433 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3434 hdev->cur_adv_instance = conn->adv_instance; 3435 hci_enable_advertising(hdev); 3436 } 3437 3438 hci_conn_del(conn); 3439 3440 unlock: 3441 hci_dev_unlock(hdev); 3442 } 3443 3444 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3445 struct sk_buff *skb) 3446 { 3447 struct hci_ev_auth_complete *ev = data; 3448 struct hci_conn *conn; 3449 3450 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3451 3452 hci_dev_lock(hdev); 3453 3454 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3455 if (!conn) 3456 goto unlock; 3457 3458 if (!ev->status) { 3459 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3460 set_bit(HCI_CONN_AUTH, &conn->flags); 3461 conn->sec_level = conn->pending_sec_level; 3462 } else { 3463 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3464 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3465 3466 mgmt_auth_failed(conn, ev->status); 3467 } 3468 3469 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3470 3471 if (conn->state == BT_CONFIG) { 3472 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3473 struct hci_cp_set_conn_encrypt cp; 3474 cp.handle = ev->handle; 3475 cp.encrypt = 0x01; 3476 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3477 &cp); 3478 } else { 3479 conn->state = BT_CONNECTED; 3480 hci_connect_cfm(conn, ev->status); 3481 hci_conn_drop(conn); 3482 } 3483 } else { 3484 hci_auth_cfm(conn, ev->status); 3485 3486 hci_conn_hold(conn); 3487 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3488 hci_conn_drop(conn); 3489 } 3490 3491 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3492 if (!ev->status) { 3493 struct hci_cp_set_conn_encrypt cp; 3494 cp.handle = ev->handle; 3495 cp.encrypt = 0x01; 3496 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3497 &cp); 3498 } else { 3499 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3500 hci_encrypt_cfm(conn, ev->status); 3501 } 3502 } 3503 3504 unlock: 3505 hci_dev_unlock(hdev); 3506 } 3507 3508 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3509 struct sk_buff *skb) 3510 { 3511 struct hci_ev_remote_name *ev = data; 3512 struct hci_conn *conn; 3513 3514 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3515 3516 hci_dev_lock(hdev); 3517 3518 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3519 3520 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3521 goto check_auth; 3522 3523 if (ev->status == 0) 3524 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3525 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3526 else 3527 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3528 3529 check_auth: 3530 if (!conn) 3531 goto unlock; 3532 3533 if (!hci_outgoing_auth_needed(hdev, conn)) 3534 goto unlock; 3535 3536 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3537 struct hci_cp_auth_requested cp; 3538 3539 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3540 3541 cp.handle = __cpu_to_le16(conn->handle); 3542 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3543 } 3544 3545 unlock: 3546 hci_dev_unlock(hdev); 3547 } 3548 3549 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3550 struct sk_buff *skb) 3551 { 3552 struct hci_ev_encrypt_change *ev = data; 3553 struct hci_conn *conn; 3554 3555 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3556 3557 hci_dev_lock(hdev); 3558 3559 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3560 if (!conn) 3561 goto unlock; 3562 3563 if (!ev->status) { 3564 if (ev->encrypt) { 3565 /* Encryption implies authentication */ 3566 set_bit(HCI_CONN_AUTH, &conn->flags); 3567 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3568 conn->sec_level = conn->pending_sec_level; 3569 3570 /* P-256 authentication key implies FIPS */ 3571 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3572 set_bit(HCI_CONN_FIPS, &conn->flags); 3573 3574 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3575 conn->type == LE_LINK) 3576 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3577 } else { 3578 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3579 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3580 } 3581 } 3582 3583 /* We should disregard the current RPA and generate a new one 3584 * whenever the encryption procedure fails. 3585 */ 3586 if (ev->status && conn->type == LE_LINK) { 3587 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3588 hci_adv_instances_set_rpa_expired(hdev, true); 3589 } 3590 3591 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3592 3593 /* Check link security requirements are met */ 3594 if (!hci_conn_check_link_mode(conn)) 3595 ev->status = HCI_ERROR_AUTH_FAILURE; 3596 3597 if (ev->status && conn->state == BT_CONNECTED) { 3598 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3599 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3600 3601 /* Notify upper layers so they can cleanup before 3602 * disconnecting. 3603 */ 3604 hci_encrypt_cfm(conn, ev->status); 3605 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3606 hci_conn_drop(conn); 3607 goto unlock; 3608 } 3609 3610 /* Try reading the encryption key size for encrypted ACL links */ 3611 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3612 struct hci_cp_read_enc_key_size cp; 3613 3614 /* Only send HCI_Read_Encryption_Key_Size if the 3615 * controller really supports it. If it doesn't, assume 3616 * the default size (16). 3617 */ 3618 if (!read_key_size_capable(hdev)) { 3619 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3620 goto notify; 3621 } 3622 3623 cp.handle = cpu_to_le16(conn->handle); 3624 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3625 sizeof(cp), &cp)) { 3626 bt_dev_err(hdev, "sending read key size failed"); 3627 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3628 goto notify; 3629 } 3630 3631 goto unlock; 3632 } 3633 3634 /* We skip the WRITE_AUTH_PAYLOAD_TIMEOUT for ATS2851 based controllers 3635 * to avoid unexpected SMP command errors when pairing. 3636 */ 3637 if (test_bit(HCI_QUIRK_BROKEN_WRITE_AUTH_PAYLOAD_TIMEOUT, 3638 &hdev->quirks)) 3639 goto notify; 3640 3641 /* Set the default Authenticated Payload Timeout after 3642 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3643 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3644 * sent when the link is active and Encryption is enabled, the conn 3645 * type can be either LE or ACL and controller must support LMP Ping. 3646 * Ensure for AES-CCM encryption as well. 3647 */ 3648 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3649 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3650 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3651 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3652 struct hci_cp_write_auth_payload_to cp; 3653 3654 cp.handle = cpu_to_le16(conn->handle); 3655 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3656 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3657 sizeof(cp), &cp)) 3658 bt_dev_err(hdev, "write auth payload timeout failed"); 3659 } 3660 3661 notify: 3662 hci_encrypt_cfm(conn, ev->status); 3663 3664 unlock: 3665 hci_dev_unlock(hdev); 3666 } 3667 3668 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3669 struct sk_buff *skb) 3670 { 3671 struct hci_ev_change_link_key_complete *ev = data; 3672 struct hci_conn *conn; 3673 3674 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3675 3676 hci_dev_lock(hdev); 3677 3678 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3679 if (conn) { 3680 if (!ev->status) 3681 set_bit(HCI_CONN_SECURE, &conn->flags); 3682 3683 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3684 3685 hci_key_change_cfm(conn, ev->status); 3686 } 3687 3688 hci_dev_unlock(hdev); 3689 } 3690 3691 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3692 struct sk_buff *skb) 3693 { 3694 struct hci_ev_remote_features *ev = data; 3695 struct hci_conn *conn; 3696 3697 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3698 3699 hci_dev_lock(hdev); 3700 3701 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3702 if (!conn) 3703 goto unlock; 3704 3705 if (!ev->status) 3706 memcpy(conn->features[0], ev->features, 8); 3707 3708 if (conn->state != BT_CONFIG) 3709 goto unlock; 3710 3711 if (!ev->status && lmp_ext_feat_capable(hdev) && 3712 lmp_ext_feat_capable(conn)) { 3713 struct hci_cp_read_remote_ext_features cp; 3714 cp.handle = ev->handle; 3715 cp.page = 0x01; 3716 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3717 sizeof(cp), &cp); 3718 goto unlock; 3719 } 3720 3721 if (!ev->status) { 3722 struct hci_cp_remote_name_req cp; 3723 memset(&cp, 0, sizeof(cp)); 3724 bacpy(&cp.bdaddr, &conn->dst); 3725 cp.pscan_rep_mode = 0x02; 3726 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3727 } else { 3728 mgmt_device_connected(hdev, conn, NULL, 0); 3729 } 3730 3731 if (!hci_outgoing_auth_needed(hdev, conn)) { 3732 conn->state = BT_CONNECTED; 3733 hci_connect_cfm(conn, ev->status); 3734 hci_conn_drop(conn); 3735 } 3736 3737 unlock: 3738 hci_dev_unlock(hdev); 3739 } 3740 3741 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3742 { 3743 cancel_delayed_work(&hdev->cmd_timer); 3744 3745 rcu_read_lock(); 3746 if (!test_bit(HCI_RESET, &hdev->flags)) { 3747 if (ncmd) { 3748 cancel_delayed_work(&hdev->ncmd_timer); 3749 atomic_set(&hdev->cmd_cnt, 1); 3750 } else { 3751 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3752 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3753 HCI_NCMD_TIMEOUT); 3754 } 3755 } 3756 rcu_read_unlock(); 3757 } 3758 3759 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3760 struct sk_buff *skb) 3761 { 3762 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3763 3764 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3765 3766 if (rp->status) 3767 return rp->status; 3768 3769 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3770 hdev->le_pkts = rp->acl_max_pkt; 3771 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3772 hdev->iso_pkts = rp->iso_max_pkt; 3773 3774 hdev->le_cnt = hdev->le_pkts; 3775 hdev->iso_cnt = hdev->iso_pkts; 3776 3777 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3778 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3779 3780 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 3781 return HCI_ERROR_INVALID_PARAMETERS; 3782 3783 return rp->status; 3784 } 3785 3786 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3787 { 3788 struct hci_conn *conn, *tmp; 3789 3790 lockdep_assert_held(&hdev->lock); 3791 3792 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3793 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) || 3794 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3795 continue; 3796 3797 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3798 hci_conn_failed(conn, status); 3799 } 3800 } 3801 3802 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3803 struct sk_buff *skb) 3804 { 3805 struct hci_rp_le_set_cig_params *rp = data; 3806 struct hci_cp_le_set_cig_params *cp; 3807 struct hci_conn *conn; 3808 u8 status = rp->status; 3809 bool pending = false; 3810 int i; 3811 3812 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3813 3814 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3815 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3816 rp->cig_id != cp->cig_id)) { 3817 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3818 status = HCI_ERROR_UNSPECIFIED; 3819 } 3820 3821 hci_dev_lock(hdev); 3822 3823 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3824 * 3825 * If the Status return parameter is non-zero, then the state of the CIG 3826 * and its CIS configurations shall not be changed by the command. If 3827 * the CIG did not already exist, it shall not be created. 3828 */ 3829 if (status) { 3830 /* Keep current configuration, fail only the unbound CIS */ 3831 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3832 goto unlock; 3833 } 3834 3835 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3836 * 3837 * If the Status return parameter is zero, then the Controller shall 3838 * set the Connection_Handle arrayed return parameter to the connection 3839 * handle(s) corresponding to the CIS configurations specified in 3840 * the CIS_IDs command parameter, in the same order. 3841 */ 3842 for (i = 0; i < rp->num_handles; ++i) { 3843 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3844 cp->cis[i].cis_id); 3845 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3846 continue; 3847 3848 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3849 continue; 3850 3851 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3852 continue; 3853 3854 if (conn->state == BT_CONNECT) 3855 pending = true; 3856 } 3857 3858 unlock: 3859 if (pending) 3860 hci_le_create_cis_pending(hdev); 3861 3862 hci_dev_unlock(hdev); 3863 3864 return rp->status; 3865 } 3866 3867 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3868 struct sk_buff *skb) 3869 { 3870 struct hci_rp_le_setup_iso_path *rp = data; 3871 struct hci_cp_le_setup_iso_path *cp; 3872 struct hci_conn *conn; 3873 3874 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3875 3876 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3877 if (!cp) 3878 return rp->status; 3879 3880 hci_dev_lock(hdev); 3881 3882 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3883 if (!conn) 3884 goto unlock; 3885 3886 if (rp->status) { 3887 hci_connect_cfm(conn, rp->status); 3888 hci_conn_del(conn); 3889 goto unlock; 3890 } 3891 3892 switch (cp->direction) { 3893 /* Input (Host to Controller) */ 3894 case 0x00: 3895 /* Only confirm connection if output only */ 3896 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3897 hci_connect_cfm(conn, rp->status); 3898 break; 3899 /* Output (Controller to Host) */ 3900 case 0x01: 3901 /* Confirm connection since conn->iso_qos is always configured 3902 * last. 3903 */ 3904 hci_connect_cfm(conn, rp->status); 3905 3906 /* Notify device connected in case it is a BIG Sync */ 3907 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) 3908 mgmt_device_connected(hdev, conn, NULL, 0); 3909 3910 break; 3911 } 3912 3913 unlock: 3914 hci_dev_unlock(hdev); 3915 return rp->status; 3916 } 3917 3918 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3919 { 3920 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3921 } 3922 3923 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3924 struct sk_buff *skb) 3925 { 3926 struct hci_ev_status *rp = data; 3927 struct hci_cp_le_set_per_adv_params *cp; 3928 3929 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3930 3931 if (rp->status) 3932 return rp->status; 3933 3934 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3935 if (!cp) 3936 return rp->status; 3937 3938 /* TODO: set the conn state */ 3939 return rp->status; 3940 } 3941 3942 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3943 struct sk_buff *skb) 3944 { 3945 struct hci_ev_status *rp = data; 3946 struct hci_cp_le_set_per_adv_enable *cp; 3947 struct adv_info *adv = NULL, *n; 3948 u8 per_adv_cnt = 0; 3949 3950 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3951 3952 if (rp->status) 3953 return rp->status; 3954 3955 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3956 if (!cp) 3957 return rp->status; 3958 3959 hci_dev_lock(hdev); 3960 3961 adv = hci_find_adv_instance(hdev, cp->handle); 3962 3963 if (cp->enable) { 3964 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3965 3966 if (adv) 3967 adv->enabled = true; 3968 } else { 3969 /* If just one instance was disabled check if there are 3970 * any other instance enabled before clearing HCI_LE_PER_ADV. 3971 * The current periodic adv instance will be marked as 3972 * disabled once extended advertising is also disabled. 3973 */ 3974 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 3975 list) { 3976 if (adv->periodic && adv->enabled) 3977 per_adv_cnt++; 3978 } 3979 3980 if (per_adv_cnt > 1) 3981 goto unlock; 3982 3983 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3984 } 3985 3986 unlock: 3987 hci_dev_unlock(hdev); 3988 3989 return rp->status; 3990 } 3991 3992 #define HCI_CC_VL(_op, _func, _min, _max) \ 3993 { \ 3994 .op = _op, \ 3995 .func = _func, \ 3996 .min_len = _min, \ 3997 .max_len = _max, \ 3998 } 3999 4000 #define HCI_CC(_op, _func, _len) \ 4001 HCI_CC_VL(_op, _func, _len, _len) 4002 4003 #define HCI_CC_STATUS(_op, _func) \ 4004 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 4005 4006 static const struct hci_cc { 4007 u16 op; 4008 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 4009 u16 min_len; 4010 u16 max_len; 4011 } hci_cc_table[] = { 4012 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 4013 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 4014 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 4015 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 4016 hci_cc_remote_name_req_cancel), 4017 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 4018 sizeof(struct hci_rp_role_discovery)), 4019 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 4020 sizeof(struct hci_rp_read_link_policy)), 4021 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4022 sizeof(struct hci_rp_write_link_policy)), 4023 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4024 sizeof(struct hci_rp_read_def_link_policy)), 4025 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4026 hci_cc_write_def_link_policy), 4027 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4028 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4029 sizeof(struct hci_rp_read_stored_link_key)), 4030 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4031 sizeof(struct hci_rp_delete_stored_link_key)), 4032 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4033 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4034 sizeof(struct hci_rp_read_local_name)), 4035 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4036 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4037 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4038 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4039 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4040 sizeof(struct hci_rp_read_class_of_dev)), 4041 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4042 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4043 sizeof(struct hci_rp_read_voice_setting)), 4044 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4045 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4046 sizeof(struct hci_rp_read_num_supported_iac)), 4047 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4048 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4049 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4050 sizeof(struct hci_rp_read_auth_payload_to)), 4051 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4052 sizeof(struct hci_rp_write_auth_payload_to)), 4053 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4054 sizeof(struct hci_rp_read_local_version)), 4055 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4056 sizeof(struct hci_rp_read_local_commands)), 4057 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4058 sizeof(struct hci_rp_read_local_features)), 4059 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4060 sizeof(struct hci_rp_read_local_ext_features)), 4061 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4062 sizeof(struct hci_rp_read_buffer_size)), 4063 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4064 sizeof(struct hci_rp_read_bd_addr)), 4065 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4066 sizeof(struct hci_rp_read_local_pairing_opts)), 4067 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4068 sizeof(struct hci_rp_read_page_scan_activity)), 4069 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4070 hci_cc_write_page_scan_activity), 4071 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4072 sizeof(struct hci_rp_read_page_scan_type)), 4073 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4074 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4075 sizeof(struct hci_rp_read_clock)), 4076 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4077 sizeof(struct hci_rp_read_enc_key_size)), 4078 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4079 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4080 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4081 hci_cc_read_def_err_data_reporting, 4082 sizeof(struct hci_rp_read_def_err_data_reporting)), 4083 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4084 hci_cc_write_def_err_data_reporting), 4085 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4086 sizeof(struct hci_rp_pin_code_reply)), 4087 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4088 sizeof(struct hci_rp_pin_code_neg_reply)), 4089 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4090 sizeof(struct hci_rp_read_local_oob_data)), 4091 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4092 sizeof(struct hci_rp_read_local_oob_ext_data)), 4093 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4094 sizeof(struct hci_rp_le_read_buffer_size)), 4095 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4096 sizeof(struct hci_rp_le_read_local_features)), 4097 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4098 sizeof(struct hci_rp_le_read_adv_tx_power)), 4099 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4100 sizeof(struct hci_rp_user_confirm_reply)), 4101 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4102 sizeof(struct hci_rp_user_confirm_reply)), 4103 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4104 sizeof(struct hci_rp_user_confirm_reply)), 4105 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4106 sizeof(struct hci_rp_user_confirm_reply)), 4107 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4108 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4109 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4110 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4111 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4112 hci_cc_le_read_accept_list_size, 4113 sizeof(struct hci_rp_le_read_accept_list_size)), 4114 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4115 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4116 hci_cc_le_add_to_accept_list), 4117 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4118 hci_cc_le_del_from_accept_list), 4119 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4120 sizeof(struct hci_rp_le_read_supported_states)), 4121 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4122 sizeof(struct hci_rp_le_read_def_data_len)), 4123 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4124 hci_cc_le_write_def_data_len), 4125 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4126 hci_cc_le_add_to_resolv_list), 4127 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4128 hci_cc_le_del_from_resolv_list), 4129 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4130 hci_cc_le_clear_resolv_list), 4131 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4132 sizeof(struct hci_rp_le_read_resolv_list_size)), 4133 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4134 hci_cc_le_set_addr_resolution_enable), 4135 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4136 sizeof(struct hci_rp_le_read_max_data_len)), 4137 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4138 hci_cc_write_le_host_supported), 4139 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4140 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4141 sizeof(struct hci_rp_read_rssi)), 4142 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4143 sizeof(struct hci_rp_read_tx_power)), 4144 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4145 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4146 hci_cc_le_set_ext_scan_param), 4147 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4148 hci_cc_le_set_ext_scan_enable), 4149 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4150 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4151 hci_cc_le_read_num_adv_sets, 4152 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4153 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4154 sizeof(struct hci_rp_le_set_ext_adv_params)), 4155 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4156 hci_cc_le_set_ext_adv_enable), 4157 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4158 hci_cc_le_set_adv_set_random_addr), 4159 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4160 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4161 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4162 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4163 hci_cc_le_set_per_adv_enable), 4164 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4165 sizeof(struct hci_rp_le_read_transmit_power)), 4166 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4167 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4168 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4169 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4170 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4171 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4172 sizeof(struct hci_rp_le_setup_iso_path)), 4173 }; 4174 4175 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4176 struct sk_buff *skb) 4177 { 4178 void *data; 4179 4180 if (skb->len < cc->min_len) { 4181 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4182 cc->op, skb->len, cc->min_len); 4183 return HCI_ERROR_UNSPECIFIED; 4184 } 4185 4186 /* Just warn if the length is over max_len size it still be possible to 4187 * partially parse the cc so leave to callback to decide if that is 4188 * acceptable. 4189 */ 4190 if (skb->len > cc->max_len) 4191 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4192 cc->op, skb->len, cc->max_len); 4193 4194 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4195 if (!data) 4196 return HCI_ERROR_UNSPECIFIED; 4197 4198 return cc->func(hdev, data, skb); 4199 } 4200 4201 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4202 struct sk_buff *skb, u16 *opcode, u8 *status, 4203 hci_req_complete_t *req_complete, 4204 hci_req_complete_skb_t *req_complete_skb) 4205 { 4206 struct hci_ev_cmd_complete *ev = data; 4207 int i; 4208 4209 *opcode = __le16_to_cpu(ev->opcode); 4210 4211 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4212 4213 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4214 if (hci_cc_table[i].op == *opcode) { 4215 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4216 break; 4217 } 4218 } 4219 4220 if (i == ARRAY_SIZE(hci_cc_table)) { 4221 /* Unknown opcode, assume byte 0 contains the status, so 4222 * that e.g. __hci_cmd_sync() properly returns errors 4223 * for vendor specific commands send by HCI drivers. 4224 * If a vendor doesn't actually follow this convention we may 4225 * need to introduce a vendor CC table in order to properly set 4226 * the status. 4227 */ 4228 *status = skb->data[0]; 4229 } 4230 4231 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4232 4233 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4234 req_complete_skb); 4235 4236 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4237 bt_dev_err(hdev, 4238 "unexpected event for opcode 0x%4.4x", *opcode); 4239 return; 4240 } 4241 4242 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4243 queue_work(hdev->workqueue, &hdev->cmd_work); 4244 } 4245 4246 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4247 { 4248 struct hci_cp_le_create_cis *cp; 4249 bool pending = false; 4250 int i; 4251 4252 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4253 4254 if (!status) 4255 return; 4256 4257 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4258 if (!cp) 4259 return; 4260 4261 hci_dev_lock(hdev); 4262 4263 /* Remove connection if command failed */ 4264 for (i = 0; i < cp->num_cis; i++) { 4265 struct hci_conn *conn; 4266 u16 handle; 4267 4268 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4269 4270 conn = hci_conn_hash_lookup_handle(hdev, handle); 4271 if (conn) { 4272 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4273 &conn->flags)) 4274 pending = true; 4275 conn->state = BT_CLOSED; 4276 hci_connect_cfm(conn, status); 4277 hci_conn_del(conn); 4278 } 4279 } 4280 cp->num_cis = 0; 4281 4282 if (pending) 4283 hci_le_create_cis_pending(hdev); 4284 4285 hci_dev_unlock(hdev); 4286 } 4287 4288 #define HCI_CS(_op, _func) \ 4289 { \ 4290 .op = _op, \ 4291 .func = _func, \ 4292 } 4293 4294 static const struct hci_cs { 4295 u16 op; 4296 void (*func)(struct hci_dev *hdev, __u8 status); 4297 } hci_cs_table[] = { 4298 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4299 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4300 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4301 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4302 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4303 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4304 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4305 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4306 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4307 hci_cs_read_remote_ext_features), 4308 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4309 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4310 hci_cs_enhanced_setup_sync_conn), 4311 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4312 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4313 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4314 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4315 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4316 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4317 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4318 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4319 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4320 }; 4321 4322 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4323 struct sk_buff *skb, u16 *opcode, u8 *status, 4324 hci_req_complete_t *req_complete, 4325 hci_req_complete_skb_t *req_complete_skb) 4326 { 4327 struct hci_ev_cmd_status *ev = data; 4328 int i; 4329 4330 *opcode = __le16_to_cpu(ev->opcode); 4331 *status = ev->status; 4332 4333 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4334 4335 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4336 if (hci_cs_table[i].op == *opcode) { 4337 hci_cs_table[i].func(hdev, ev->status); 4338 break; 4339 } 4340 } 4341 4342 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4343 4344 /* Indicate request completion if the command failed. Also, if 4345 * we're not waiting for a special event and we get a success 4346 * command status we should try to flag the request as completed 4347 * (since for this kind of commands there will not be a command 4348 * complete event). 4349 */ 4350 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { 4351 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4352 req_complete_skb); 4353 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4354 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4355 *opcode); 4356 return; 4357 } 4358 } 4359 4360 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4361 queue_work(hdev->workqueue, &hdev->cmd_work); 4362 } 4363 4364 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4365 struct sk_buff *skb) 4366 { 4367 struct hci_ev_hardware_error *ev = data; 4368 4369 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4370 4371 hdev->hw_error_code = ev->code; 4372 4373 queue_work(hdev->req_workqueue, &hdev->error_reset); 4374 } 4375 4376 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4377 struct sk_buff *skb) 4378 { 4379 struct hci_ev_role_change *ev = data; 4380 struct hci_conn *conn; 4381 4382 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4383 4384 hci_dev_lock(hdev); 4385 4386 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4387 if (conn) { 4388 if (!ev->status) 4389 conn->role = ev->role; 4390 4391 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4392 4393 hci_role_switch_cfm(conn, ev->status, ev->role); 4394 } 4395 4396 hci_dev_unlock(hdev); 4397 } 4398 4399 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4400 struct sk_buff *skb) 4401 { 4402 struct hci_ev_num_comp_pkts *ev = data; 4403 int i; 4404 4405 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4406 flex_array_size(ev, handles, ev->num))) 4407 return; 4408 4409 bt_dev_dbg(hdev, "num %d", ev->num); 4410 4411 for (i = 0; i < ev->num; i++) { 4412 struct hci_comp_pkts_info *info = &ev->handles[i]; 4413 struct hci_conn *conn; 4414 __u16 handle, count; 4415 4416 handle = __le16_to_cpu(info->handle); 4417 count = __le16_to_cpu(info->count); 4418 4419 conn = hci_conn_hash_lookup_handle(hdev, handle); 4420 if (!conn) 4421 continue; 4422 4423 conn->sent -= count; 4424 4425 switch (conn->type) { 4426 case ACL_LINK: 4427 hdev->acl_cnt += count; 4428 if (hdev->acl_cnt > hdev->acl_pkts) 4429 hdev->acl_cnt = hdev->acl_pkts; 4430 break; 4431 4432 case LE_LINK: 4433 if (hdev->le_pkts) { 4434 hdev->le_cnt += count; 4435 if (hdev->le_cnt > hdev->le_pkts) 4436 hdev->le_cnt = hdev->le_pkts; 4437 } else { 4438 hdev->acl_cnt += count; 4439 if (hdev->acl_cnt > hdev->acl_pkts) 4440 hdev->acl_cnt = hdev->acl_pkts; 4441 } 4442 break; 4443 4444 case SCO_LINK: 4445 hdev->sco_cnt += count; 4446 if (hdev->sco_cnt > hdev->sco_pkts) 4447 hdev->sco_cnt = hdev->sco_pkts; 4448 break; 4449 4450 case ISO_LINK: 4451 if (hdev->iso_pkts) { 4452 hdev->iso_cnt += count; 4453 if (hdev->iso_cnt > hdev->iso_pkts) 4454 hdev->iso_cnt = hdev->iso_pkts; 4455 } else if (hdev->le_pkts) { 4456 hdev->le_cnt += count; 4457 if (hdev->le_cnt > hdev->le_pkts) 4458 hdev->le_cnt = hdev->le_pkts; 4459 } else { 4460 hdev->acl_cnt += count; 4461 if (hdev->acl_cnt > hdev->acl_pkts) 4462 hdev->acl_cnt = hdev->acl_pkts; 4463 } 4464 break; 4465 4466 default: 4467 bt_dev_err(hdev, "unknown type %d conn %p", 4468 conn->type, conn); 4469 break; 4470 } 4471 } 4472 4473 queue_work(hdev->workqueue, &hdev->tx_work); 4474 } 4475 4476 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4477 struct sk_buff *skb) 4478 { 4479 struct hci_ev_mode_change *ev = data; 4480 struct hci_conn *conn; 4481 4482 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4483 4484 hci_dev_lock(hdev); 4485 4486 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4487 if (conn) { 4488 conn->mode = ev->mode; 4489 4490 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4491 &conn->flags)) { 4492 if (conn->mode == HCI_CM_ACTIVE) 4493 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4494 else 4495 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4496 } 4497 4498 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4499 hci_sco_setup(conn, ev->status); 4500 } 4501 4502 hci_dev_unlock(hdev); 4503 } 4504 4505 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4506 struct sk_buff *skb) 4507 { 4508 struct hci_ev_pin_code_req *ev = data; 4509 struct hci_conn *conn; 4510 4511 bt_dev_dbg(hdev, ""); 4512 4513 hci_dev_lock(hdev); 4514 4515 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4516 if (!conn) 4517 goto unlock; 4518 4519 if (conn->state == BT_CONNECTED) { 4520 hci_conn_hold(conn); 4521 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4522 hci_conn_drop(conn); 4523 } 4524 4525 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4526 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4527 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4528 sizeof(ev->bdaddr), &ev->bdaddr); 4529 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4530 u8 secure; 4531 4532 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4533 secure = 1; 4534 else 4535 secure = 0; 4536 4537 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4538 } 4539 4540 unlock: 4541 hci_dev_unlock(hdev); 4542 } 4543 4544 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4545 { 4546 if (key_type == HCI_LK_CHANGED_COMBINATION) 4547 return; 4548 4549 conn->pin_length = pin_len; 4550 conn->key_type = key_type; 4551 4552 switch (key_type) { 4553 case HCI_LK_LOCAL_UNIT: 4554 case HCI_LK_REMOTE_UNIT: 4555 case HCI_LK_DEBUG_COMBINATION: 4556 return; 4557 case HCI_LK_COMBINATION: 4558 if (pin_len == 16) 4559 conn->pending_sec_level = BT_SECURITY_HIGH; 4560 else 4561 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4562 break; 4563 case HCI_LK_UNAUTH_COMBINATION_P192: 4564 case HCI_LK_UNAUTH_COMBINATION_P256: 4565 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4566 break; 4567 case HCI_LK_AUTH_COMBINATION_P192: 4568 conn->pending_sec_level = BT_SECURITY_HIGH; 4569 break; 4570 case HCI_LK_AUTH_COMBINATION_P256: 4571 conn->pending_sec_level = BT_SECURITY_FIPS; 4572 break; 4573 } 4574 } 4575 4576 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4577 struct sk_buff *skb) 4578 { 4579 struct hci_ev_link_key_req *ev = data; 4580 struct hci_cp_link_key_reply cp; 4581 struct hci_conn *conn; 4582 struct link_key *key; 4583 4584 bt_dev_dbg(hdev, ""); 4585 4586 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4587 return; 4588 4589 hci_dev_lock(hdev); 4590 4591 key = hci_find_link_key(hdev, &ev->bdaddr); 4592 if (!key) { 4593 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4594 goto not_found; 4595 } 4596 4597 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4598 4599 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4600 if (conn) { 4601 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4602 4603 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4604 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4605 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4606 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4607 goto not_found; 4608 } 4609 4610 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4611 (conn->pending_sec_level == BT_SECURITY_HIGH || 4612 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4613 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4614 goto not_found; 4615 } 4616 4617 conn_set_key(conn, key->type, key->pin_len); 4618 } 4619 4620 bacpy(&cp.bdaddr, &ev->bdaddr); 4621 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4622 4623 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4624 4625 hci_dev_unlock(hdev); 4626 4627 return; 4628 4629 not_found: 4630 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4631 hci_dev_unlock(hdev); 4632 } 4633 4634 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4635 struct sk_buff *skb) 4636 { 4637 struct hci_ev_link_key_notify *ev = data; 4638 struct hci_conn *conn; 4639 struct link_key *key; 4640 bool persistent; 4641 u8 pin_len = 0; 4642 4643 bt_dev_dbg(hdev, ""); 4644 4645 hci_dev_lock(hdev); 4646 4647 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4648 if (!conn) 4649 goto unlock; 4650 4651 /* Ignore NULL link key against CVE-2020-26555 */ 4652 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4653 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4654 &ev->bdaddr); 4655 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4656 hci_conn_drop(conn); 4657 goto unlock; 4658 } 4659 4660 hci_conn_hold(conn); 4661 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4662 hci_conn_drop(conn); 4663 4664 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4665 conn_set_key(conn, ev->key_type, conn->pin_length); 4666 4667 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4668 goto unlock; 4669 4670 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4671 ev->key_type, pin_len, &persistent); 4672 if (!key) 4673 goto unlock; 4674 4675 /* Update connection information since adding the key will have 4676 * fixed up the type in the case of changed combination keys. 4677 */ 4678 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4679 conn_set_key(conn, key->type, key->pin_len); 4680 4681 mgmt_new_link_key(hdev, key, persistent); 4682 4683 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4684 * is set. If it's not set simply remove the key from the kernel 4685 * list (we've still notified user space about it but with 4686 * store_hint being 0). 4687 */ 4688 if (key->type == HCI_LK_DEBUG_COMBINATION && 4689 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4690 list_del_rcu(&key->list); 4691 kfree_rcu(key, rcu); 4692 goto unlock; 4693 } 4694 4695 if (persistent) 4696 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4697 else 4698 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4699 4700 unlock: 4701 hci_dev_unlock(hdev); 4702 } 4703 4704 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4705 struct sk_buff *skb) 4706 { 4707 struct hci_ev_clock_offset *ev = data; 4708 struct hci_conn *conn; 4709 4710 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4711 4712 hci_dev_lock(hdev); 4713 4714 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4715 if (conn && !ev->status) { 4716 struct inquiry_entry *ie; 4717 4718 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4719 if (ie) { 4720 ie->data.clock_offset = ev->clock_offset; 4721 ie->timestamp = jiffies; 4722 } 4723 } 4724 4725 hci_dev_unlock(hdev); 4726 } 4727 4728 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4729 struct sk_buff *skb) 4730 { 4731 struct hci_ev_pkt_type_change *ev = data; 4732 struct hci_conn *conn; 4733 4734 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4735 4736 hci_dev_lock(hdev); 4737 4738 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4739 if (conn && !ev->status) 4740 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4741 4742 hci_dev_unlock(hdev); 4743 } 4744 4745 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4746 struct sk_buff *skb) 4747 { 4748 struct hci_ev_pscan_rep_mode *ev = data; 4749 struct inquiry_entry *ie; 4750 4751 bt_dev_dbg(hdev, ""); 4752 4753 hci_dev_lock(hdev); 4754 4755 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4756 if (ie) { 4757 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4758 ie->timestamp = jiffies; 4759 } 4760 4761 hci_dev_unlock(hdev); 4762 } 4763 4764 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4765 struct sk_buff *skb) 4766 { 4767 struct hci_ev_inquiry_result_rssi *ev = edata; 4768 struct inquiry_data data; 4769 int i; 4770 4771 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4772 4773 if (!ev->num) 4774 return; 4775 4776 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4777 return; 4778 4779 hci_dev_lock(hdev); 4780 4781 if (skb->len == array_size(ev->num, 4782 sizeof(struct inquiry_info_rssi_pscan))) { 4783 struct inquiry_info_rssi_pscan *info; 4784 4785 for (i = 0; i < ev->num; i++) { 4786 u32 flags; 4787 4788 info = hci_ev_skb_pull(hdev, skb, 4789 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4790 sizeof(*info)); 4791 if (!info) { 4792 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4793 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4794 goto unlock; 4795 } 4796 4797 bacpy(&data.bdaddr, &info->bdaddr); 4798 data.pscan_rep_mode = info->pscan_rep_mode; 4799 data.pscan_period_mode = info->pscan_period_mode; 4800 data.pscan_mode = info->pscan_mode; 4801 memcpy(data.dev_class, info->dev_class, 3); 4802 data.clock_offset = info->clock_offset; 4803 data.rssi = info->rssi; 4804 data.ssp_mode = 0x00; 4805 4806 flags = hci_inquiry_cache_update(hdev, &data, false); 4807 4808 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4809 info->dev_class, info->rssi, 4810 flags, NULL, 0, NULL, 0, 0); 4811 } 4812 } else if (skb->len == array_size(ev->num, 4813 sizeof(struct inquiry_info_rssi))) { 4814 struct inquiry_info_rssi *info; 4815 4816 for (i = 0; i < ev->num; i++) { 4817 u32 flags; 4818 4819 info = hci_ev_skb_pull(hdev, skb, 4820 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4821 sizeof(*info)); 4822 if (!info) { 4823 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4824 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4825 goto unlock; 4826 } 4827 4828 bacpy(&data.bdaddr, &info->bdaddr); 4829 data.pscan_rep_mode = info->pscan_rep_mode; 4830 data.pscan_period_mode = info->pscan_period_mode; 4831 data.pscan_mode = 0x00; 4832 memcpy(data.dev_class, info->dev_class, 3); 4833 data.clock_offset = info->clock_offset; 4834 data.rssi = info->rssi; 4835 data.ssp_mode = 0x00; 4836 4837 flags = hci_inquiry_cache_update(hdev, &data, false); 4838 4839 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4840 info->dev_class, info->rssi, 4841 flags, NULL, 0, NULL, 0, 0); 4842 } 4843 } else { 4844 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4845 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4846 } 4847 unlock: 4848 hci_dev_unlock(hdev); 4849 } 4850 4851 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4852 struct sk_buff *skb) 4853 { 4854 struct hci_ev_remote_ext_features *ev = data; 4855 struct hci_conn *conn; 4856 4857 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4858 4859 hci_dev_lock(hdev); 4860 4861 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4862 if (!conn) 4863 goto unlock; 4864 4865 if (ev->page < HCI_MAX_PAGES) 4866 memcpy(conn->features[ev->page], ev->features, 8); 4867 4868 if (!ev->status && ev->page == 0x01) { 4869 struct inquiry_entry *ie; 4870 4871 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4872 if (ie) 4873 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4874 4875 if (ev->features[0] & LMP_HOST_SSP) { 4876 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4877 } else { 4878 /* It is mandatory by the Bluetooth specification that 4879 * Extended Inquiry Results are only used when Secure 4880 * Simple Pairing is enabled, but some devices violate 4881 * this. 4882 * 4883 * To make these devices work, the internal SSP 4884 * enabled flag needs to be cleared if the remote host 4885 * features do not indicate SSP support */ 4886 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4887 } 4888 4889 if (ev->features[0] & LMP_HOST_SC) 4890 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4891 } 4892 4893 if (conn->state != BT_CONFIG) 4894 goto unlock; 4895 4896 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4897 struct hci_cp_remote_name_req cp; 4898 memset(&cp, 0, sizeof(cp)); 4899 bacpy(&cp.bdaddr, &conn->dst); 4900 cp.pscan_rep_mode = 0x02; 4901 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4902 } else { 4903 mgmt_device_connected(hdev, conn, NULL, 0); 4904 } 4905 4906 if (!hci_outgoing_auth_needed(hdev, conn)) { 4907 conn->state = BT_CONNECTED; 4908 hci_connect_cfm(conn, ev->status); 4909 hci_conn_drop(conn); 4910 } 4911 4912 unlock: 4913 hci_dev_unlock(hdev); 4914 } 4915 4916 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4917 struct sk_buff *skb) 4918 { 4919 struct hci_ev_sync_conn_complete *ev = data; 4920 struct hci_conn *conn; 4921 u8 status = ev->status; 4922 4923 switch (ev->link_type) { 4924 case SCO_LINK: 4925 case ESCO_LINK: 4926 break; 4927 default: 4928 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4929 * for HCI_Synchronous_Connection_Complete is limited to 4930 * either SCO or eSCO 4931 */ 4932 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4933 return; 4934 } 4935 4936 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4937 4938 hci_dev_lock(hdev); 4939 4940 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4941 if (!conn) { 4942 if (ev->link_type == ESCO_LINK) 4943 goto unlock; 4944 4945 /* When the link type in the event indicates SCO connection 4946 * and lookup of the connection object fails, then check 4947 * if an eSCO connection object exists. 4948 * 4949 * The core limits the synchronous connections to either 4950 * SCO or eSCO. The eSCO connection is preferred and tried 4951 * to be setup first and until successfully established, 4952 * the link type will be hinted as eSCO. 4953 */ 4954 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4955 if (!conn) 4956 goto unlock; 4957 } 4958 4959 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4960 * Processing it more than once per connection can corrupt kernel memory. 4961 * 4962 * As the connection handle is set here for the first time, it indicates 4963 * whether the connection is already set up. 4964 */ 4965 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 4966 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 4967 goto unlock; 4968 } 4969 4970 switch (status) { 4971 case 0x00: 4972 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 4973 if (status) { 4974 conn->state = BT_CLOSED; 4975 break; 4976 } 4977 4978 conn->state = BT_CONNECTED; 4979 conn->type = ev->link_type; 4980 4981 hci_debugfs_create_conn(conn); 4982 hci_conn_add_sysfs(conn); 4983 break; 4984 4985 case 0x10: /* Connection Accept Timeout */ 4986 case 0x0d: /* Connection Rejected due to Limited Resources */ 4987 case 0x11: /* Unsupported Feature or Parameter Value */ 4988 case 0x1c: /* SCO interval rejected */ 4989 case 0x1a: /* Unsupported Remote Feature */ 4990 case 0x1e: /* Invalid LMP Parameters */ 4991 case 0x1f: /* Unspecified error */ 4992 case 0x20: /* Unsupported LMP Parameter value */ 4993 if (conn->out) { 4994 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 4995 (hdev->esco_type & EDR_ESCO_MASK); 4996 if (hci_setup_sync(conn, conn->parent->handle)) 4997 goto unlock; 4998 } 4999 fallthrough; 5000 5001 default: 5002 conn->state = BT_CLOSED; 5003 break; 5004 } 5005 5006 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5007 /* Notify only in case of SCO over HCI transport data path which 5008 * is zero and non-zero value shall be non-HCI transport data path 5009 */ 5010 if (conn->codec.data_path == 0 && hdev->notify) { 5011 switch (ev->air_mode) { 5012 case 0x02: 5013 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5014 break; 5015 case 0x03: 5016 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5017 break; 5018 } 5019 } 5020 5021 hci_connect_cfm(conn, status); 5022 if (status) 5023 hci_conn_del(conn); 5024 5025 unlock: 5026 hci_dev_unlock(hdev); 5027 } 5028 5029 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5030 { 5031 size_t parsed = 0; 5032 5033 while (parsed < eir_len) { 5034 u8 field_len = eir[0]; 5035 5036 if (field_len == 0) 5037 return parsed; 5038 5039 parsed += field_len + 1; 5040 eir += field_len + 1; 5041 } 5042 5043 return eir_len; 5044 } 5045 5046 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5047 struct sk_buff *skb) 5048 { 5049 struct hci_ev_ext_inquiry_result *ev = edata; 5050 struct inquiry_data data; 5051 size_t eir_len; 5052 int i; 5053 5054 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5055 flex_array_size(ev, info, ev->num))) 5056 return; 5057 5058 bt_dev_dbg(hdev, "num %d", ev->num); 5059 5060 if (!ev->num) 5061 return; 5062 5063 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5064 return; 5065 5066 hci_dev_lock(hdev); 5067 5068 for (i = 0; i < ev->num; i++) { 5069 struct extended_inquiry_info *info = &ev->info[i]; 5070 u32 flags; 5071 bool name_known; 5072 5073 bacpy(&data.bdaddr, &info->bdaddr); 5074 data.pscan_rep_mode = info->pscan_rep_mode; 5075 data.pscan_period_mode = info->pscan_period_mode; 5076 data.pscan_mode = 0x00; 5077 memcpy(data.dev_class, info->dev_class, 3); 5078 data.clock_offset = info->clock_offset; 5079 data.rssi = info->rssi; 5080 data.ssp_mode = 0x01; 5081 5082 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5083 name_known = eir_get_data(info->data, 5084 sizeof(info->data), 5085 EIR_NAME_COMPLETE, NULL); 5086 else 5087 name_known = true; 5088 5089 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5090 5091 eir_len = eir_get_length(info->data, sizeof(info->data)); 5092 5093 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5094 info->dev_class, info->rssi, 5095 flags, info->data, eir_len, NULL, 0, 0); 5096 } 5097 5098 hci_dev_unlock(hdev); 5099 } 5100 5101 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5102 struct sk_buff *skb) 5103 { 5104 struct hci_ev_key_refresh_complete *ev = data; 5105 struct hci_conn *conn; 5106 5107 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5108 __le16_to_cpu(ev->handle)); 5109 5110 hci_dev_lock(hdev); 5111 5112 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5113 if (!conn) 5114 goto unlock; 5115 5116 /* For BR/EDR the necessary steps are taken through the 5117 * auth_complete event. 5118 */ 5119 if (conn->type != LE_LINK) 5120 goto unlock; 5121 5122 if (!ev->status) 5123 conn->sec_level = conn->pending_sec_level; 5124 5125 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5126 5127 if (ev->status && conn->state == BT_CONNECTED) { 5128 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5129 hci_conn_drop(conn); 5130 goto unlock; 5131 } 5132 5133 if (conn->state == BT_CONFIG) { 5134 if (!ev->status) 5135 conn->state = BT_CONNECTED; 5136 5137 hci_connect_cfm(conn, ev->status); 5138 hci_conn_drop(conn); 5139 } else { 5140 hci_auth_cfm(conn, ev->status); 5141 5142 hci_conn_hold(conn); 5143 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5144 hci_conn_drop(conn); 5145 } 5146 5147 unlock: 5148 hci_dev_unlock(hdev); 5149 } 5150 5151 static u8 hci_get_auth_req(struct hci_conn *conn) 5152 { 5153 /* If remote requests no-bonding follow that lead */ 5154 if (conn->remote_auth == HCI_AT_NO_BONDING || 5155 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5156 return conn->remote_auth | (conn->auth_type & 0x01); 5157 5158 /* If both remote and local have enough IO capabilities, require 5159 * MITM protection 5160 */ 5161 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5162 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5163 return conn->remote_auth | 0x01; 5164 5165 /* No MITM protection possible so ignore remote requirement */ 5166 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5167 } 5168 5169 static u8 bredr_oob_data_present(struct hci_conn *conn) 5170 { 5171 struct hci_dev *hdev = conn->hdev; 5172 struct oob_data *data; 5173 5174 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5175 if (!data) 5176 return 0x00; 5177 5178 if (bredr_sc_enabled(hdev)) { 5179 /* When Secure Connections is enabled, then just 5180 * return the present value stored with the OOB 5181 * data. The stored value contains the right present 5182 * information. However it can only be trusted when 5183 * not in Secure Connection Only mode. 5184 */ 5185 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5186 return data->present; 5187 5188 /* When Secure Connections Only mode is enabled, then 5189 * the P-256 values are required. If they are not 5190 * available, then do not declare that OOB data is 5191 * present. 5192 */ 5193 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5194 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5195 return 0x00; 5196 5197 return 0x02; 5198 } 5199 5200 /* When Secure Connections is not enabled or actually 5201 * not supported by the hardware, then check that if 5202 * P-192 data values are present. 5203 */ 5204 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5205 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5206 return 0x00; 5207 5208 return 0x01; 5209 } 5210 5211 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5212 struct sk_buff *skb) 5213 { 5214 struct hci_ev_io_capa_request *ev = data; 5215 struct hci_conn *conn; 5216 5217 bt_dev_dbg(hdev, ""); 5218 5219 hci_dev_lock(hdev); 5220 5221 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5222 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5223 goto unlock; 5224 5225 /* Assume remote supports SSP since it has triggered this event */ 5226 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5227 5228 hci_conn_hold(conn); 5229 5230 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5231 goto unlock; 5232 5233 /* Allow pairing if we're pairable, the initiators of the 5234 * pairing or if the remote is not requesting bonding. 5235 */ 5236 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5237 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5238 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5239 struct hci_cp_io_capability_reply cp; 5240 5241 bacpy(&cp.bdaddr, &ev->bdaddr); 5242 /* Change the IO capability from KeyboardDisplay 5243 * to DisplayYesNo as it is not supported by BT spec. */ 5244 cp.capability = (conn->io_capability == 0x04) ? 5245 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5246 5247 /* If we are initiators, there is no remote information yet */ 5248 if (conn->remote_auth == 0xff) { 5249 /* Request MITM protection if our IO caps allow it 5250 * except for the no-bonding case. 5251 */ 5252 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5253 conn->auth_type != HCI_AT_NO_BONDING) 5254 conn->auth_type |= 0x01; 5255 } else { 5256 conn->auth_type = hci_get_auth_req(conn); 5257 } 5258 5259 /* If we're not bondable, force one of the non-bondable 5260 * authentication requirement values. 5261 */ 5262 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5263 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5264 5265 cp.authentication = conn->auth_type; 5266 cp.oob_data = bredr_oob_data_present(conn); 5267 5268 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5269 sizeof(cp), &cp); 5270 } else { 5271 struct hci_cp_io_capability_neg_reply cp; 5272 5273 bacpy(&cp.bdaddr, &ev->bdaddr); 5274 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5275 5276 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5277 sizeof(cp), &cp); 5278 } 5279 5280 unlock: 5281 hci_dev_unlock(hdev); 5282 } 5283 5284 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5285 struct sk_buff *skb) 5286 { 5287 struct hci_ev_io_capa_reply *ev = data; 5288 struct hci_conn *conn; 5289 5290 bt_dev_dbg(hdev, ""); 5291 5292 hci_dev_lock(hdev); 5293 5294 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5295 if (!conn) 5296 goto unlock; 5297 5298 conn->remote_cap = ev->capability; 5299 conn->remote_auth = ev->authentication; 5300 5301 unlock: 5302 hci_dev_unlock(hdev); 5303 } 5304 5305 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5306 struct sk_buff *skb) 5307 { 5308 struct hci_ev_user_confirm_req *ev = data; 5309 int loc_mitm, rem_mitm, confirm_hint = 0; 5310 struct hci_conn *conn; 5311 5312 bt_dev_dbg(hdev, ""); 5313 5314 hci_dev_lock(hdev); 5315 5316 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5317 goto unlock; 5318 5319 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5320 if (!conn) 5321 goto unlock; 5322 5323 loc_mitm = (conn->auth_type & 0x01); 5324 rem_mitm = (conn->remote_auth & 0x01); 5325 5326 /* If we require MITM but the remote device can't provide that 5327 * (it has NoInputNoOutput) then reject the confirmation 5328 * request. We check the security level here since it doesn't 5329 * necessarily match conn->auth_type. 5330 */ 5331 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5332 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5333 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5334 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5335 sizeof(ev->bdaddr), &ev->bdaddr); 5336 goto unlock; 5337 } 5338 5339 /* If no side requires MITM protection; use JUST_CFM method */ 5340 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5341 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5342 5343 /* If we're not the initiator of request authorization and the 5344 * local IO capability is not NoInputNoOutput, use JUST_WORKS 5345 * method (mgmt_user_confirm with confirm_hint set to 1). 5346 */ 5347 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5348 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) { 5349 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5350 confirm_hint = 1; 5351 goto confirm; 5352 } 5353 5354 /* If there already exists link key in local host, leave the 5355 * decision to user space since the remote device could be 5356 * legitimate or malicious. 5357 */ 5358 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5359 bt_dev_dbg(hdev, "Local host already has link key"); 5360 confirm_hint = 1; 5361 goto confirm; 5362 } 5363 5364 BT_DBG("Auto-accept of user confirmation with %ums delay", 5365 hdev->auto_accept_delay); 5366 5367 if (hdev->auto_accept_delay > 0) { 5368 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5369 queue_delayed_work(conn->hdev->workqueue, 5370 &conn->auto_accept_work, delay); 5371 goto unlock; 5372 } 5373 5374 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5375 sizeof(ev->bdaddr), &ev->bdaddr); 5376 goto unlock; 5377 } 5378 5379 confirm: 5380 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5381 le32_to_cpu(ev->passkey), confirm_hint); 5382 5383 unlock: 5384 hci_dev_unlock(hdev); 5385 } 5386 5387 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5388 struct sk_buff *skb) 5389 { 5390 struct hci_ev_user_passkey_req *ev = data; 5391 5392 bt_dev_dbg(hdev, ""); 5393 5394 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5395 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5396 } 5397 5398 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5399 struct sk_buff *skb) 5400 { 5401 struct hci_ev_user_passkey_notify *ev = data; 5402 struct hci_conn *conn; 5403 5404 bt_dev_dbg(hdev, ""); 5405 5406 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5407 if (!conn) 5408 return; 5409 5410 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5411 conn->passkey_entered = 0; 5412 5413 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5414 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5415 conn->dst_type, conn->passkey_notify, 5416 conn->passkey_entered); 5417 } 5418 5419 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5420 struct sk_buff *skb) 5421 { 5422 struct hci_ev_keypress_notify *ev = data; 5423 struct hci_conn *conn; 5424 5425 bt_dev_dbg(hdev, ""); 5426 5427 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5428 if (!conn) 5429 return; 5430 5431 switch (ev->type) { 5432 case HCI_KEYPRESS_STARTED: 5433 conn->passkey_entered = 0; 5434 return; 5435 5436 case HCI_KEYPRESS_ENTERED: 5437 conn->passkey_entered++; 5438 break; 5439 5440 case HCI_KEYPRESS_ERASED: 5441 conn->passkey_entered--; 5442 break; 5443 5444 case HCI_KEYPRESS_CLEARED: 5445 conn->passkey_entered = 0; 5446 break; 5447 5448 case HCI_KEYPRESS_COMPLETED: 5449 return; 5450 } 5451 5452 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5453 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5454 conn->dst_type, conn->passkey_notify, 5455 conn->passkey_entered); 5456 } 5457 5458 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5459 struct sk_buff *skb) 5460 { 5461 struct hci_ev_simple_pair_complete *ev = data; 5462 struct hci_conn *conn; 5463 5464 bt_dev_dbg(hdev, ""); 5465 5466 hci_dev_lock(hdev); 5467 5468 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5469 if (!conn || !hci_conn_ssp_enabled(conn)) 5470 goto unlock; 5471 5472 /* Reset the authentication requirement to unknown */ 5473 conn->remote_auth = 0xff; 5474 5475 /* To avoid duplicate auth_failed events to user space we check 5476 * the HCI_CONN_AUTH_PEND flag which will be set if we 5477 * initiated the authentication. A traditional auth_complete 5478 * event gets always produced as initiator and is also mapped to 5479 * the mgmt_auth_failed event */ 5480 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5481 mgmt_auth_failed(conn, ev->status); 5482 5483 hci_conn_drop(conn); 5484 5485 unlock: 5486 hci_dev_unlock(hdev); 5487 } 5488 5489 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5490 struct sk_buff *skb) 5491 { 5492 struct hci_ev_remote_host_features *ev = data; 5493 struct inquiry_entry *ie; 5494 struct hci_conn *conn; 5495 5496 bt_dev_dbg(hdev, ""); 5497 5498 hci_dev_lock(hdev); 5499 5500 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5501 if (conn) 5502 memcpy(conn->features[1], ev->features, 8); 5503 5504 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5505 if (ie) 5506 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5507 5508 hci_dev_unlock(hdev); 5509 } 5510 5511 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5512 struct sk_buff *skb) 5513 { 5514 struct hci_ev_remote_oob_data_request *ev = edata; 5515 struct oob_data *data; 5516 5517 bt_dev_dbg(hdev, ""); 5518 5519 hci_dev_lock(hdev); 5520 5521 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5522 goto unlock; 5523 5524 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5525 if (!data) { 5526 struct hci_cp_remote_oob_data_neg_reply cp; 5527 5528 bacpy(&cp.bdaddr, &ev->bdaddr); 5529 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5530 sizeof(cp), &cp); 5531 goto unlock; 5532 } 5533 5534 if (bredr_sc_enabled(hdev)) { 5535 struct hci_cp_remote_oob_ext_data_reply cp; 5536 5537 bacpy(&cp.bdaddr, &ev->bdaddr); 5538 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5539 memset(cp.hash192, 0, sizeof(cp.hash192)); 5540 memset(cp.rand192, 0, sizeof(cp.rand192)); 5541 } else { 5542 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5543 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5544 } 5545 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5546 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5547 5548 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5549 sizeof(cp), &cp); 5550 } else { 5551 struct hci_cp_remote_oob_data_reply cp; 5552 5553 bacpy(&cp.bdaddr, &ev->bdaddr); 5554 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5555 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5556 5557 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5558 sizeof(cp), &cp); 5559 } 5560 5561 unlock: 5562 hci_dev_unlock(hdev); 5563 } 5564 5565 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5566 u8 bdaddr_type, bdaddr_t *local_rpa) 5567 { 5568 if (conn->out) { 5569 conn->dst_type = bdaddr_type; 5570 conn->resp_addr_type = bdaddr_type; 5571 bacpy(&conn->resp_addr, bdaddr); 5572 5573 /* Check if the controller has set a Local RPA then it must be 5574 * used instead or hdev->rpa. 5575 */ 5576 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5577 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5578 bacpy(&conn->init_addr, local_rpa); 5579 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5580 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5581 bacpy(&conn->init_addr, &conn->hdev->rpa); 5582 } else { 5583 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5584 &conn->init_addr_type); 5585 } 5586 } else { 5587 conn->resp_addr_type = conn->hdev->adv_addr_type; 5588 /* Check if the controller has set a Local RPA then it must be 5589 * used instead or hdev->rpa. 5590 */ 5591 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5592 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5593 bacpy(&conn->resp_addr, local_rpa); 5594 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5595 /* In case of ext adv, resp_addr will be updated in 5596 * Adv Terminated event. 5597 */ 5598 if (!ext_adv_capable(conn->hdev)) 5599 bacpy(&conn->resp_addr, 5600 &conn->hdev->random_addr); 5601 } else { 5602 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5603 } 5604 5605 conn->init_addr_type = bdaddr_type; 5606 bacpy(&conn->init_addr, bdaddr); 5607 5608 /* For incoming connections, set the default minimum 5609 * and maximum connection interval. They will be used 5610 * to check if the parameters are in range and if not 5611 * trigger the connection update procedure. 5612 */ 5613 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5614 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5615 } 5616 } 5617 5618 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5619 bdaddr_t *bdaddr, u8 bdaddr_type, 5620 bdaddr_t *local_rpa, u8 role, u16 handle, 5621 u16 interval, u16 latency, 5622 u16 supervision_timeout) 5623 { 5624 struct hci_conn_params *params; 5625 struct hci_conn *conn; 5626 struct smp_irk *irk; 5627 u8 addr_type; 5628 5629 hci_dev_lock(hdev); 5630 5631 /* All controllers implicitly stop advertising in the event of a 5632 * connection, so ensure that the state bit is cleared. 5633 */ 5634 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5635 5636 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5637 if (!conn) { 5638 /* In case of error status and there is no connection pending 5639 * just unlock as there is nothing to cleanup. 5640 */ 5641 if (status) 5642 goto unlock; 5643 5644 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5645 if (IS_ERR(conn)) { 5646 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 5647 goto unlock; 5648 } 5649 5650 conn->dst_type = bdaddr_type; 5651 5652 /* If we didn't have a hci_conn object previously 5653 * but we're in central role this must be something 5654 * initiated using an accept list. Since accept list based 5655 * connections are not "first class citizens" we don't 5656 * have full tracking of them. Therefore, we go ahead 5657 * with a "best effort" approach of determining the 5658 * initiator address based on the HCI_PRIVACY flag. 5659 */ 5660 if (conn->out) { 5661 conn->resp_addr_type = bdaddr_type; 5662 bacpy(&conn->resp_addr, bdaddr); 5663 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5664 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5665 bacpy(&conn->init_addr, &hdev->rpa); 5666 } else { 5667 hci_copy_identity_address(hdev, 5668 &conn->init_addr, 5669 &conn->init_addr_type); 5670 } 5671 } 5672 } else { 5673 cancel_delayed_work(&conn->le_conn_timeout); 5674 } 5675 5676 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5677 * Processing it more than once per connection can corrupt kernel memory. 5678 * 5679 * As the connection handle is set here for the first time, it indicates 5680 * whether the connection is already set up. 5681 */ 5682 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5683 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5684 goto unlock; 5685 } 5686 5687 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5688 5689 /* Lookup the identity address from the stored connection 5690 * address and address type. 5691 * 5692 * When establishing connections to an identity address, the 5693 * connection procedure will store the resolvable random 5694 * address first. Now if it can be converted back into the 5695 * identity address, start using the identity address from 5696 * now on. 5697 */ 5698 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5699 if (irk) { 5700 bacpy(&conn->dst, &irk->bdaddr); 5701 conn->dst_type = irk->addr_type; 5702 } 5703 5704 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5705 5706 /* All connection failure handling is taken care of by the 5707 * hci_conn_failed function which is triggered by the HCI 5708 * request completion callbacks used for connecting. 5709 */ 5710 if (status || hci_conn_set_handle(conn, handle)) 5711 goto unlock; 5712 5713 /* Drop the connection if it has been aborted */ 5714 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5715 hci_conn_drop(conn); 5716 goto unlock; 5717 } 5718 5719 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5720 addr_type = BDADDR_LE_PUBLIC; 5721 else 5722 addr_type = BDADDR_LE_RANDOM; 5723 5724 /* Drop the connection if the device is blocked */ 5725 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5726 hci_conn_drop(conn); 5727 goto unlock; 5728 } 5729 5730 mgmt_device_connected(hdev, conn, NULL, 0); 5731 5732 conn->sec_level = BT_SECURITY_LOW; 5733 conn->state = BT_CONFIG; 5734 5735 /* Store current advertising instance as connection advertising instance 5736 * when sotfware rotation is in use so it can be re-enabled when 5737 * disconnected. 5738 */ 5739 if (!ext_adv_capable(hdev)) 5740 conn->adv_instance = hdev->cur_adv_instance; 5741 5742 conn->le_conn_interval = interval; 5743 conn->le_conn_latency = latency; 5744 conn->le_supv_timeout = supervision_timeout; 5745 5746 hci_debugfs_create_conn(conn); 5747 hci_conn_add_sysfs(conn); 5748 5749 /* The remote features procedure is defined for central 5750 * role only. So only in case of an initiated connection 5751 * request the remote features. 5752 * 5753 * If the local controller supports peripheral-initiated features 5754 * exchange, then requesting the remote features in peripheral 5755 * role is possible. Otherwise just transition into the 5756 * connected state without requesting the remote features. 5757 */ 5758 if (conn->out || 5759 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5760 struct hci_cp_le_read_remote_features cp; 5761 5762 cp.handle = __cpu_to_le16(conn->handle); 5763 5764 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5765 sizeof(cp), &cp); 5766 5767 hci_conn_hold(conn); 5768 } else { 5769 conn->state = BT_CONNECTED; 5770 hci_connect_cfm(conn, status); 5771 } 5772 5773 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5774 conn->dst_type); 5775 if (params) { 5776 hci_pend_le_list_del_init(params); 5777 if (params->conn) { 5778 hci_conn_drop(params->conn); 5779 hci_conn_put(params->conn); 5780 params->conn = NULL; 5781 } 5782 } 5783 5784 unlock: 5785 hci_update_passive_scan(hdev); 5786 hci_dev_unlock(hdev); 5787 } 5788 5789 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5790 struct sk_buff *skb) 5791 { 5792 struct hci_ev_le_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 NULL, 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_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5804 struct sk_buff *skb) 5805 { 5806 struct hci_ev_le_enh_conn_complete *ev = data; 5807 5808 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5809 5810 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5811 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 5812 le16_to_cpu(ev->interval), 5813 le16_to_cpu(ev->latency), 5814 le16_to_cpu(ev->supervision_timeout)); 5815 } 5816 5817 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 5818 struct sk_buff *skb) 5819 { 5820 struct hci_evt_le_ext_adv_set_term *ev = data; 5821 struct hci_conn *conn; 5822 struct adv_info *adv, *n; 5823 5824 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5825 5826 /* The Bluetooth Core 5.3 specification clearly states that this event 5827 * shall not be sent when the Host disables the advertising set. So in 5828 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 5829 * 5830 * When the Host disables an advertising set, all cleanup is done via 5831 * its command callback and not needed to be duplicated here. 5832 */ 5833 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 5834 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 5835 return; 5836 } 5837 5838 hci_dev_lock(hdev); 5839 5840 adv = hci_find_adv_instance(hdev, ev->handle); 5841 5842 if (ev->status) { 5843 if (!adv) 5844 goto unlock; 5845 5846 /* Remove advertising as it has been terminated */ 5847 hci_remove_adv_instance(hdev, ev->handle); 5848 mgmt_advertising_removed(NULL, hdev, ev->handle); 5849 5850 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 5851 if (adv->enabled) 5852 goto unlock; 5853 } 5854 5855 /* We are no longer advertising, clear HCI_LE_ADV */ 5856 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5857 goto unlock; 5858 } 5859 5860 if (adv) 5861 adv->enabled = false; 5862 5863 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 5864 if (conn) { 5865 /* Store handle in the connection so the correct advertising 5866 * instance can be re-enabled when disconnected. 5867 */ 5868 conn->adv_instance = ev->handle; 5869 5870 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 5871 bacmp(&conn->resp_addr, BDADDR_ANY)) 5872 goto unlock; 5873 5874 if (!ev->handle) { 5875 bacpy(&conn->resp_addr, &hdev->random_addr); 5876 goto unlock; 5877 } 5878 5879 if (adv) 5880 bacpy(&conn->resp_addr, &adv->random_addr); 5881 } 5882 5883 unlock: 5884 hci_dev_unlock(hdev); 5885 } 5886 5887 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 5888 struct sk_buff *skb) 5889 { 5890 struct hci_ev_le_conn_update_complete *ev = data; 5891 struct hci_conn *conn; 5892 5893 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5894 5895 if (ev->status) 5896 return; 5897 5898 hci_dev_lock(hdev); 5899 5900 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5901 if (conn) { 5902 conn->le_conn_interval = le16_to_cpu(ev->interval); 5903 conn->le_conn_latency = le16_to_cpu(ev->latency); 5904 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 5905 } 5906 5907 hci_dev_unlock(hdev); 5908 } 5909 5910 /* This function requires the caller holds hdev->lock */ 5911 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 5912 bdaddr_t *addr, 5913 u8 addr_type, bool addr_resolved, 5914 u8 adv_type, u8 phy, u8 sec_phy) 5915 { 5916 struct hci_conn *conn; 5917 struct hci_conn_params *params; 5918 5919 /* If the event is not connectable don't proceed further */ 5920 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 5921 return NULL; 5922 5923 /* Ignore if the device is blocked or hdev is suspended */ 5924 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 5925 hdev->suspended) 5926 return NULL; 5927 5928 /* Most controller will fail if we try to create new connections 5929 * while we have an existing one in peripheral role. 5930 */ 5931 if (hdev->conn_hash.le_num_peripheral > 0 && 5932 (test_bit(HCI_QUIRK_BROKEN_LE_STATES, &hdev->quirks) || 5933 !(hdev->le_states[3] & 0x10))) 5934 return NULL; 5935 5936 /* If we're not connectable only connect devices that we have in 5937 * our pend_le_conns list. 5938 */ 5939 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 5940 addr_type); 5941 if (!params) 5942 return NULL; 5943 5944 if (!params->explicit_connect) { 5945 switch (params->auto_connect) { 5946 case HCI_AUTO_CONN_DIRECT: 5947 /* Only devices advertising with ADV_DIRECT_IND are 5948 * triggering a connection attempt. This is allowing 5949 * incoming connections from peripheral devices. 5950 */ 5951 if (adv_type != LE_ADV_DIRECT_IND) 5952 return NULL; 5953 break; 5954 case HCI_AUTO_CONN_ALWAYS: 5955 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 5956 * are triggering a connection attempt. This means 5957 * that incoming connections from peripheral device are 5958 * accepted and also outgoing connections to peripheral 5959 * devices are established when found. 5960 */ 5961 break; 5962 default: 5963 return NULL; 5964 } 5965 } 5966 5967 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 5968 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 5969 HCI_ROLE_MASTER, phy, sec_phy); 5970 if (!IS_ERR(conn)) { 5971 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 5972 * by higher layer that tried to connect, if no then 5973 * store the pointer since we don't really have any 5974 * other owner of the object besides the params that 5975 * triggered it. This way we can abort the connection if 5976 * the parameters get removed and keep the reference 5977 * count consistent once the connection is established. 5978 */ 5979 5980 if (!params->explicit_connect) 5981 params->conn = hci_conn_get(conn); 5982 5983 return conn; 5984 } 5985 5986 switch (PTR_ERR(conn)) { 5987 case -EBUSY: 5988 /* If hci_connect() returns -EBUSY it means there is already 5989 * an LE connection attempt going on. Since controllers don't 5990 * support more than one connection attempt at the time, we 5991 * don't consider this an error case. 5992 */ 5993 break; 5994 default: 5995 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 5996 return NULL; 5997 } 5998 5999 return NULL; 6000 } 6001 6002 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6003 u8 bdaddr_type, bdaddr_t *direct_addr, 6004 u8 direct_addr_type, u8 phy, u8 sec_phy, s8 rssi, 6005 u8 *data, u8 len, bool ext_adv, bool ctl_time, 6006 u64 instant) 6007 { 6008 struct discovery_state *d = &hdev->discovery; 6009 struct smp_irk *irk; 6010 struct hci_conn *conn; 6011 bool match, bdaddr_resolved; 6012 u32 flags; 6013 u8 *ptr; 6014 6015 switch (type) { 6016 case LE_ADV_IND: 6017 case LE_ADV_DIRECT_IND: 6018 case LE_ADV_SCAN_IND: 6019 case LE_ADV_NONCONN_IND: 6020 case LE_ADV_SCAN_RSP: 6021 break; 6022 default: 6023 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6024 "type: 0x%02x", type); 6025 return; 6026 } 6027 6028 if (len > max_adv_len(hdev)) { 6029 bt_dev_err_ratelimited(hdev, 6030 "adv larger than maximum supported"); 6031 return; 6032 } 6033 6034 /* Find the end of the data in case the report contains padded zero 6035 * bytes at the end causing an invalid length value. 6036 * 6037 * When data is NULL, len is 0 so there is no need for extra ptr 6038 * check as 'ptr < data + 0' is already false in such case. 6039 */ 6040 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6041 if (ptr + 1 + *ptr > data + len) 6042 break; 6043 } 6044 6045 /* Adjust for actual length. This handles the case when remote 6046 * device is advertising with incorrect data length. 6047 */ 6048 len = ptr - data; 6049 6050 /* If the direct address is present, then this report is from 6051 * a LE Direct Advertising Report event. In that case it is 6052 * important to see if the address is matching the local 6053 * controller address. 6054 */ 6055 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6056 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6057 &bdaddr_resolved); 6058 6059 /* Only resolvable random addresses are valid for these 6060 * kind of reports and others can be ignored. 6061 */ 6062 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6063 return; 6064 6065 /* If the controller is not using resolvable random 6066 * addresses, then this report can be ignored. 6067 */ 6068 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6069 return; 6070 6071 /* If the local IRK of the controller does not match 6072 * with the resolvable random address provided, then 6073 * this report can be ignored. 6074 */ 6075 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6076 return; 6077 } 6078 6079 /* Check if we need to convert to identity address */ 6080 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6081 if (irk) { 6082 bdaddr = &irk->bdaddr; 6083 bdaddr_type = irk->addr_type; 6084 } 6085 6086 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6087 6088 /* Check if we have been requested to connect to this device. 6089 * 6090 * direct_addr is set only for directed advertising reports (it is NULL 6091 * for advertising reports) and is already verified to be RPA above. 6092 */ 6093 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6094 type, phy, sec_phy); 6095 if (!ext_adv && conn && type == LE_ADV_IND && 6096 len <= max_adv_len(hdev)) { 6097 /* Store report for later inclusion by 6098 * mgmt_device_connected 6099 */ 6100 memcpy(conn->le_adv_data, data, len); 6101 conn->le_adv_data_len = len; 6102 } 6103 6104 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6105 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6106 else 6107 flags = 0; 6108 6109 /* All scan results should be sent up for Mesh systems */ 6110 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6111 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6112 rssi, flags, data, len, NULL, 0, instant); 6113 return; 6114 } 6115 6116 /* Passive scanning shouldn't trigger any device found events, 6117 * except for devices marked as CONN_REPORT for which we do send 6118 * device found events, or advertisement monitoring requested. 6119 */ 6120 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6121 if (type == LE_ADV_DIRECT_IND) 6122 return; 6123 6124 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6125 bdaddr, bdaddr_type) && 6126 idr_is_empty(&hdev->adv_monitors_idr)) 6127 return; 6128 6129 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6130 rssi, flags, data, len, NULL, 0, 0); 6131 return; 6132 } 6133 6134 /* When receiving a scan response, then there is no way to 6135 * know if the remote device is connectable or not. However 6136 * since scan responses are merged with a previously seen 6137 * advertising report, the flags field from that report 6138 * will be used. 6139 * 6140 * In the unlikely case that a controller just sends a scan 6141 * response event that doesn't match the pending report, then 6142 * it is marked as a standalone SCAN_RSP. 6143 */ 6144 if (type == LE_ADV_SCAN_RSP) 6145 flags = MGMT_DEV_FOUND_SCAN_RSP; 6146 6147 /* If there's nothing pending either store the data from this 6148 * event or send an immediate device found event if the data 6149 * should not be stored for later. 6150 */ 6151 if (!ext_adv && !has_pending_adv_report(hdev)) { 6152 /* If the report will trigger a SCAN_REQ store it for 6153 * later merging. 6154 */ 6155 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6156 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6157 rssi, flags, data, len); 6158 return; 6159 } 6160 6161 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6162 rssi, flags, data, len, NULL, 0, 0); 6163 return; 6164 } 6165 6166 /* Check if the pending report is for the same device as the new one */ 6167 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6168 bdaddr_type == d->last_adv_addr_type); 6169 6170 /* If the pending data doesn't match this report or this isn't a 6171 * scan response (e.g. we got a duplicate ADV_IND) then force 6172 * sending of the pending data. 6173 */ 6174 if (type != LE_ADV_SCAN_RSP || !match) { 6175 /* Send out whatever is in the cache, but skip duplicates */ 6176 if (!match) 6177 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6178 d->last_adv_addr_type, NULL, 6179 d->last_adv_rssi, d->last_adv_flags, 6180 d->last_adv_data, 6181 d->last_adv_data_len, NULL, 0, 0); 6182 6183 /* If the new report will trigger a SCAN_REQ store it for 6184 * later merging. 6185 */ 6186 if (!ext_adv && (type == LE_ADV_IND || 6187 type == LE_ADV_SCAN_IND)) { 6188 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6189 rssi, flags, data, len); 6190 return; 6191 } 6192 6193 /* The advertising reports cannot be merged, so clear 6194 * the pending report and send out a device found event. 6195 */ 6196 clear_pending_adv_report(hdev); 6197 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6198 rssi, flags, data, len, NULL, 0, 0); 6199 return; 6200 } 6201 6202 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6203 * the new event is a SCAN_RSP. We can therefore proceed with 6204 * sending a merged device found event. 6205 */ 6206 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6207 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6208 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6209 clear_pending_adv_report(hdev); 6210 } 6211 6212 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6213 struct sk_buff *skb) 6214 { 6215 struct hci_ev_le_advertising_report *ev = data; 6216 u64 instant = jiffies; 6217 6218 if (!ev->num) 6219 return; 6220 6221 hci_dev_lock(hdev); 6222 6223 while (ev->num--) { 6224 struct hci_ev_le_advertising_info *info; 6225 s8 rssi; 6226 6227 info = hci_le_ev_skb_pull(hdev, skb, 6228 HCI_EV_LE_ADVERTISING_REPORT, 6229 sizeof(*info)); 6230 if (!info) 6231 break; 6232 6233 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6234 info->length + 1)) 6235 break; 6236 6237 if (info->length <= max_adv_len(hdev)) { 6238 rssi = info->data[info->length]; 6239 process_adv_report(hdev, info->type, &info->bdaddr, 6240 info->bdaddr_type, NULL, 0, 6241 HCI_ADV_PHY_1M, 0, rssi, 6242 info->data, info->length, false, 6243 false, instant); 6244 } else { 6245 bt_dev_err(hdev, "Dropping invalid advertising data"); 6246 } 6247 } 6248 6249 hci_dev_unlock(hdev); 6250 } 6251 6252 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6253 { 6254 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6255 switch (evt_type) { 6256 case LE_LEGACY_ADV_IND: 6257 return LE_ADV_IND; 6258 case LE_LEGACY_ADV_DIRECT_IND: 6259 return LE_ADV_DIRECT_IND; 6260 case LE_LEGACY_ADV_SCAN_IND: 6261 return LE_ADV_SCAN_IND; 6262 case LE_LEGACY_NONCONN_IND: 6263 return LE_ADV_NONCONN_IND; 6264 case LE_LEGACY_SCAN_RSP_ADV: 6265 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6266 return LE_ADV_SCAN_RSP; 6267 } 6268 6269 goto invalid; 6270 } 6271 6272 if (evt_type & LE_EXT_ADV_CONN_IND) { 6273 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6274 return LE_ADV_DIRECT_IND; 6275 6276 return LE_ADV_IND; 6277 } 6278 6279 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6280 return LE_ADV_SCAN_RSP; 6281 6282 if (evt_type & LE_EXT_ADV_SCAN_IND) 6283 return LE_ADV_SCAN_IND; 6284 6285 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6286 evt_type & LE_EXT_ADV_DIRECT_IND) 6287 return LE_ADV_NONCONN_IND; 6288 6289 invalid: 6290 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6291 evt_type); 6292 6293 return LE_ADV_INVALID; 6294 } 6295 6296 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6297 struct sk_buff *skb) 6298 { 6299 struct hci_ev_le_ext_adv_report *ev = data; 6300 u64 instant = jiffies; 6301 6302 if (!ev->num) 6303 return; 6304 6305 hci_dev_lock(hdev); 6306 6307 while (ev->num--) { 6308 struct hci_ev_le_ext_adv_info *info; 6309 u8 legacy_evt_type; 6310 u16 evt_type; 6311 6312 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6313 sizeof(*info)); 6314 if (!info) 6315 break; 6316 6317 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6318 info->length)) 6319 break; 6320 6321 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6322 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6323 6324 if (test_bit(HCI_QUIRK_FIXUP_LE_EXT_ADV_REPORT_PHY, 6325 &hdev->quirks)) { 6326 info->primary_phy &= 0x1f; 6327 info->secondary_phy &= 0x1f; 6328 } 6329 6330 if (legacy_evt_type != LE_ADV_INVALID) { 6331 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6332 info->bdaddr_type, NULL, 0, 6333 info->primary_phy, 6334 info->secondary_phy, 6335 info->rssi, info->data, info->length, 6336 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6337 false, instant); 6338 } 6339 } 6340 6341 hci_dev_unlock(hdev); 6342 } 6343 6344 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6345 { 6346 struct hci_cp_le_pa_term_sync cp; 6347 6348 memset(&cp, 0, sizeof(cp)); 6349 cp.handle = handle; 6350 6351 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6352 } 6353 6354 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6355 struct sk_buff *skb) 6356 { 6357 struct hci_ev_le_pa_sync_established *ev = data; 6358 int mask = hdev->link_mode; 6359 __u8 flags = 0; 6360 struct hci_conn *pa_sync, *conn; 6361 6362 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6363 6364 hci_dev_lock(hdev); 6365 6366 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6367 6368 conn = hci_conn_hash_lookup_sid(hdev, ev->sid, &ev->bdaddr, 6369 ev->bdaddr_type); 6370 if (!conn) { 6371 bt_dev_err(hdev, 6372 "Unable to find connection for dst %pMR sid 0x%2.2x", 6373 &ev->bdaddr, ev->sid); 6374 goto unlock; 6375 } 6376 6377 clear_bit(HCI_CONN_CREATE_PA_SYNC, &conn->flags); 6378 6379 conn->sync_handle = le16_to_cpu(ev->handle); 6380 conn->sid = HCI_SID_INVALID; 6381 6382 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6383 if (!(mask & HCI_LM_ACCEPT)) { 6384 hci_le_pa_term_sync(hdev, ev->handle); 6385 goto unlock; 6386 } 6387 6388 if (!(flags & HCI_PROTO_DEFER)) 6389 goto unlock; 6390 6391 /* Add connection to indicate PA sync event */ 6392 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 6393 HCI_ROLE_SLAVE); 6394 6395 if (IS_ERR(pa_sync)) 6396 goto unlock; 6397 6398 pa_sync->sync_handle = le16_to_cpu(ev->handle); 6399 6400 if (ev->status) { 6401 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6402 6403 /* Notify iso layer */ 6404 hci_connect_cfm(pa_sync, ev->status); 6405 } 6406 6407 unlock: 6408 /* Handle any other pending PA sync command */ 6409 hci_pa_create_sync_pending(hdev); 6410 6411 hci_dev_unlock(hdev); 6412 } 6413 6414 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6415 struct sk_buff *skb) 6416 { 6417 struct hci_ev_le_per_adv_report *ev = data; 6418 int mask = hdev->link_mode; 6419 __u8 flags = 0; 6420 struct hci_conn *pa_sync; 6421 6422 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6423 6424 hci_dev_lock(hdev); 6425 6426 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 6427 if (!(mask & HCI_LM_ACCEPT)) 6428 goto unlock; 6429 6430 if (!(flags & HCI_PROTO_DEFER)) 6431 goto unlock; 6432 6433 pa_sync = hci_conn_hash_lookup_pa_sync_handle 6434 (hdev, 6435 le16_to_cpu(ev->sync_handle)); 6436 6437 if (!pa_sync) 6438 goto unlock; 6439 6440 if (ev->data_status == LE_PA_DATA_COMPLETE && 6441 !test_and_set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags)) { 6442 /* Notify iso layer */ 6443 hci_connect_cfm(pa_sync, 0); 6444 6445 /* Notify MGMT layer */ 6446 mgmt_device_connected(hdev, pa_sync, NULL, 0); 6447 } 6448 6449 unlock: 6450 hci_dev_unlock(hdev); 6451 } 6452 6453 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6454 struct sk_buff *skb) 6455 { 6456 struct hci_ev_le_remote_feat_complete *ev = data; 6457 struct hci_conn *conn; 6458 6459 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6460 6461 hci_dev_lock(hdev); 6462 6463 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6464 if (conn) { 6465 if (!ev->status) 6466 memcpy(conn->features[0], ev->features, 8); 6467 6468 if (conn->state == BT_CONFIG) { 6469 __u8 status; 6470 6471 /* If the local controller supports peripheral-initiated 6472 * features exchange, but the remote controller does 6473 * not, then it is possible that the error code 0x1a 6474 * for unsupported remote feature gets returned. 6475 * 6476 * In this specific case, allow the connection to 6477 * transition into connected state and mark it as 6478 * successful. 6479 */ 6480 if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && 6481 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6482 status = 0x00; 6483 else 6484 status = ev->status; 6485 6486 conn->state = BT_CONNECTED; 6487 hci_connect_cfm(conn, status); 6488 hci_conn_drop(conn); 6489 } 6490 } 6491 6492 hci_dev_unlock(hdev); 6493 } 6494 6495 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6496 struct sk_buff *skb) 6497 { 6498 struct hci_ev_le_ltk_req *ev = data; 6499 struct hci_cp_le_ltk_reply cp; 6500 struct hci_cp_le_ltk_neg_reply neg; 6501 struct hci_conn *conn; 6502 struct smp_ltk *ltk; 6503 6504 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6505 6506 hci_dev_lock(hdev); 6507 6508 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6509 if (conn == NULL) 6510 goto not_found; 6511 6512 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6513 if (!ltk) 6514 goto not_found; 6515 6516 if (smp_ltk_is_sc(ltk)) { 6517 /* With SC both EDiv and Rand are set to zero */ 6518 if (ev->ediv || ev->rand) 6519 goto not_found; 6520 } else { 6521 /* For non-SC keys check that EDiv and Rand match */ 6522 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6523 goto not_found; 6524 } 6525 6526 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6527 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6528 cp.handle = cpu_to_le16(conn->handle); 6529 6530 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6531 6532 conn->enc_key_size = ltk->enc_size; 6533 6534 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6535 6536 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6537 * temporary key used to encrypt a connection following 6538 * pairing. It is used during the Encrypted Session Setup to 6539 * distribute the keys. Later, security can be re-established 6540 * using a distributed LTK. 6541 */ 6542 if (ltk->type == SMP_STK) { 6543 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6544 list_del_rcu(<k->list); 6545 kfree_rcu(ltk, rcu); 6546 } else { 6547 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6548 } 6549 6550 hci_dev_unlock(hdev); 6551 6552 return; 6553 6554 not_found: 6555 neg.handle = ev->handle; 6556 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6557 hci_dev_unlock(hdev); 6558 } 6559 6560 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6561 u8 reason) 6562 { 6563 struct hci_cp_le_conn_param_req_neg_reply cp; 6564 6565 cp.handle = cpu_to_le16(handle); 6566 cp.reason = reason; 6567 6568 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6569 &cp); 6570 } 6571 6572 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6573 struct sk_buff *skb) 6574 { 6575 struct hci_ev_le_remote_conn_param_req *ev = data; 6576 struct hci_cp_le_conn_param_req_reply cp; 6577 struct hci_conn *hcon; 6578 u16 handle, min, max, latency, timeout; 6579 6580 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6581 6582 handle = le16_to_cpu(ev->handle); 6583 min = le16_to_cpu(ev->interval_min); 6584 max = le16_to_cpu(ev->interval_max); 6585 latency = le16_to_cpu(ev->latency); 6586 timeout = le16_to_cpu(ev->timeout); 6587 6588 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6589 if (!hcon || hcon->state != BT_CONNECTED) 6590 return send_conn_param_neg_reply(hdev, handle, 6591 HCI_ERROR_UNKNOWN_CONN_ID); 6592 6593 if (max > hcon->le_conn_max_interval) 6594 return send_conn_param_neg_reply(hdev, handle, 6595 HCI_ERROR_INVALID_LL_PARAMS); 6596 6597 if (hci_check_conn_params(min, max, latency, timeout)) 6598 return send_conn_param_neg_reply(hdev, handle, 6599 HCI_ERROR_INVALID_LL_PARAMS); 6600 6601 if (hcon->role == HCI_ROLE_MASTER) { 6602 struct hci_conn_params *params; 6603 u8 store_hint; 6604 6605 hci_dev_lock(hdev); 6606 6607 params = hci_conn_params_lookup(hdev, &hcon->dst, 6608 hcon->dst_type); 6609 if (params) { 6610 params->conn_min_interval = min; 6611 params->conn_max_interval = max; 6612 params->conn_latency = latency; 6613 params->supervision_timeout = timeout; 6614 store_hint = 0x01; 6615 } else { 6616 store_hint = 0x00; 6617 } 6618 6619 hci_dev_unlock(hdev); 6620 6621 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6622 store_hint, min, max, latency, timeout); 6623 } 6624 6625 cp.handle = ev->handle; 6626 cp.interval_min = ev->interval_min; 6627 cp.interval_max = ev->interval_max; 6628 cp.latency = ev->latency; 6629 cp.timeout = ev->timeout; 6630 cp.min_ce_len = 0; 6631 cp.max_ce_len = 0; 6632 6633 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6634 } 6635 6636 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6637 struct sk_buff *skb) 6638 { 6639 struct hci_ev_le_direct_adv_report *ev = data; 6640 u64 instant = jiffies; 6641 int i; 6642 6643 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6644 flex_array_size(ev, info, ev->num))) 6645 return; 6646 6647 if (!ev->num) 6648 return; 6649 6650 hci_dev_lock(hdev); 6651 6652 for (i = 0; i < ev->num; i++) { 6653 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6654 6655 process_adv_report(hdev, info->type, &info->bdaddr, 6656 info->bdaddr_type, &info->direct_addr, 6657 info->direct_addr_type, HCI_ADV_PHY_1M, 0, 6658 info->rssi, NULL, 0, false, false, instant); 6659 } 6660 6661 hci_dev_unlock(hdev); 6662 } 6663 6664 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6665 struct sk_buff *skb) 6666 { 6667 struct hci_ev_le_phy_update_complete *ev = data; 6668 struct hci_conn *conn; 6669 6670 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6671 6672 if (ev->status) 6673 return; 6674 6675 hci_dev_lock(hdev); 6676 6677 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6678 if (!conn) 6679 goto unlock; 6680 6681 conn->le_tx_phy = ev->tx_phy; 6682 conn->le_rx_phy = ev->rx_phy; 6683 6684 unlock: 6685 hci_dev_unlock(hdev); 6686 } 6687 6688 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6689 struct sk_buff *skb) 6690 { 6691 struct hci_evt_le_cis_established *ev = data; 6692 struct hci_conn *conn; 6693 struct bt_iso_qos *qos; 6694 bool pending = false; 6695 u16 handle = __le16_to_cpu(ev->handle); 6696 u32 c_sdu_interval, p_sdu_interval; 6697 6698 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6699 6700 hci_dev_lock(hdev); 6701 6702 conn = hci_conn_hash_lookup_handle(hdev, handle); 6703 if (!conn) { 6704 bt_dev_err(hdev, 6705 "Unable to find connection with handle 0x%4.4x", 6706 handle); 6707 goto unlock; 6708 } 6709 6710 if (conn->type != ISO_LINK) { 6711 bt_dev_err(hdev, 6712 "Invalid connection link type handle 0x%4.4x", 6713 handle); 6714 goto unlock; 6715 } 6716 6717 qos = &conn->iso_qos; 6718 6719 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6720 6721 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 6, Part G 6722 * page 3075: 6723 * Transport_Latency_C_To_P = CIG_Sync_Delay + (FT_C_To_P) × 6724 * ISO_Interval + SDU_Interval_C_To_P 6725 * ... 6726 * SDU_Interval = (CIG_Sync_Delay + (FT) x ISO_Interval) - 6727 * Transport_Latency 6728 */ 6729 c_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6730 (ev->c_ft * le16_to_cpu(ev->interval) * 1250)) - 6731 get_unaligned_le24(ev->c_latency); 6732 p_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6733 (ev->p_ft * le16_to_cpu(ev->interval) * 1250)) - 6734 get_unaligned_le24(ev->p_latency); 6735 6736 switch (conn->role) { 6737 case HCI_ROLE_SLAVE: 6738 qos->ucast.in.interval = c_sdu_interval; 6739 qos->ucast.out.interval = p_sdu_interval; 6740 /* Convert Transport Latency (us) to Latency (msec) */ 6741 qos->ucast.in.latency = 6742 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6743 1000); 6744 qos->ucast.out.latency = 6745 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6746 1000); 6747 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6748 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6749 qos->ucast.in.phy = ev->c_phy; 6750 qos->ucast.out.phy = ev->p_phy; 6751 break; 6752 case HCI_ROLE_MASTER: 6753 qos->ucast.in.interval = p_sdu_interval; 6754 qos->ucast.out.interval = c_sdu_interval; 6755 /* Convert Transport Latency (us) to Latency (msec) */ 6756 qos->ucast.out.latency = 6757 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6758 1000); 6759 qos->ucast.in.latency = 6760 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6761 1000); 6762 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6763 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6764 qos->ucast.out.phy = ev->c_phy; 6765 qos->ucast.in.phy = ev->p_phy; 6766 break; 6767 } 6768 6769 if (!ev->status) { 6770 conn->state = BT_CONNECTED; 6771 hci_debugfs_create_conn(conn); 6772 hci_conn_add_sysfs(conn); 6773 hci_iso_setup_path(conn); 6774 goto unlock; 6775 } 6776 6777 conn->state = BT_CLOSED; 6778 hci_connect_cfm(conn, ev->status); 6779 hci_conn_del(conn); 6780 6781 unlock: 6782 if (pending) 6783 hci_le_create_cis_pending(hdev); 6784 6785 hci_dev_unlock(hdev); 6786 } 6787 6788 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6789 { 6790 struct hci_cp_le_reject_cis cp; 6791 6792 memset(&cp, 0, sizeof(cp)); 6793 cp.handle = handle; 6794 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6795 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6796 } 6797 6798 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6799 { 6800 struct hci_cp_le_accept_cis cp; 6801 6802 memset(&cp, 0, sizeof(cp)); 6803 cp.handle = handle; 6804 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6805 } 6806 6807 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6808 struct sk_buff *skb) 6809 { 6810 struct hci_evt_le_cis_req *ev = data; 6811 u16 acl_handle, cis_handle; 6812 struct hci_conn *acl, *cis; 6813 int mask; 6814 __u8 flags = 0; 6815 6816 acl_handle = __le16_to_cpu(ev->acl_handle); 6817 cis_handle = __le16_to_cpu(ev->cis_handle); 6818 6819 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6820 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6821 6822 hci_dev_lock(hdev); 6823 6824 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6825 if (!acl) 6826 goto unlock; 6827 6828 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 6829 if (!(mask & HCI_LM_ACCEPT)) { 6830 hci_le_reject_cis(hdev, ev->cis_handle); 6831 goto unlock; 6832 } 6833 6834 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6835 if (!cis) { 6836 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE, 6837 cis_handle); 6838 if (IS_ERR(cis)) { 6839 hci_le_reject_cis(hdev, ev->cis_handle); 6840 goto unlock; 6841 } 6842 } 6843 6844 cis->iso_qos.ucast.cig = ev->cig_id; 6845 cis->iso_qos.ucast.cis = ev->cis_id; 6846 6847 if (!(flags & HCI_PROTO_DEFER)) { 6848 hci_le_accept_cis(hdev, ev->cis_handle); 6849 } else { 6850 cis->state = BT_CONNECT2; 6851 hci_connect_cfm(cis, 0); 6852 } 6853 6854 unlock: 6855 hci_dev_unlock(hdev); 6856 } 6857 6858 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 6859 { 6860 u8 handle = PTR_UINT(data); 6861 6862 return hci_le_terminate_big_sync(hdev, handle, 6863 HCI_ERROR_LOCAL_HOST_TERM); 6864 } 6865 6866 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6867 struct sk_buff *skb) 6868 { 6869 struct hci_evt_le_create_big_complete *ev = data; 6870 struct hci_conn *conn; 6871 __u8 i = 0; 6872 6873 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6874 6875 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6876 flex_array_size(ev, bis_handle, ev->num_bis))) 6877 return; 6878 6879 hci_dev_lock(hdev); 6880 6881 /* Connect all BISes that are bound to the BIG */ 6882 while ((conn = hci_conn_hash_lookup_big_state(hdev, ev->handle, 6883 BT_BOUND))) { 6884 if (ev->status) { 6885 hci_connect_cfm(conn, ev->status); 6886 hci_conn_del(conn); 6887 continue; 6888 } 6889 6890 if (hci_conn_set_handle(conn, 6891 __le16_to_cpu(ev->bis_handle[i++]))) 6892 continue; 6893 6894 conn->state = BT_CONNECTED; 6895 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 6896 hci_debugfs_create_conn(conn); 6897 hci_conn_add_sysfs(conn); 6898 hci_iso_setup_path(conn); 6899 } 6900 6901 if (!ev->status && !i) 6902 /* If no BISes have been connected for the BIG, 6903 * terminate. This is in case all bound connections 6904 * have been closed before the BIG creation 6905 * has completed. 6906 */ 6907 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 6908 UINT_PTR(ev->handle), NULL); 6909 6910 hci_dev_unlock(hdev); 6911 } 6912 6913 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6914 struct sk_buff *skb) 6915 { 6916 struct hci_evt_le_big_sync_estabilished *ev = data; 6917 struct hci_conn *bis, *conn; 6918 int i; 6919 6920 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6921 6922 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 6923 flex_array_size(ev, bis, ev->num_bis))) 6924 return; 6925 6926 hci_dev_lock(hdev); 6927 6928 conn = hci_conn_hash_lookup_big_sync_pend(hdev, ev->handle, 6929 ev->num_bis); 6930 if (!conn) { 6931 bt_dev_err(hdev, 6932 "Unable to find connection for big 0x%2.2x", 6933 ev->handle); 6934 goto unlock; 6935 } 6936 6937 clear_bit(HCI_CONN_CREATE_BIG_SYNC, &conn->flags); 6938 6939 conn->num_bis = 0; 6940 memset(conn->bis, 0, sizeof(conn->num_bis)); 6941 6942 for (i = 0; i < ev->num_bis; i++) { 6943 u16 handle = le16_to_cpu(ev->bis[i]); 6944 __le32 interval; 6945 6946 bis = hci_conn_hash_lookup_handle(hdev, handle); 6947 if (!bis) { 6948 if (handle > HCI_CONN_HANDLE_MAX) { 6949 bt_dev_dbg(hdev, "ignore too large handle %u", handle); 6950 continue; 6951 } 6952 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 6953 HCI_ROLE_SLAVE, handle); 6954 if (IS_ERR(bis)) 6955 continue; 6956 } 6957 6958 if (ev->status != 0x42) 6959 /* Mark PA sync as established */ 6960 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 6961 6962 bis->sync_handle = conn->sync_handle; 6963 bis->iso_qos.bcast.big = ev->handle; 6964 memset(&interval, 0, sizeof(interval)); 6965 memcpy(&interval, ev->latency, sizeof(ev->latency)); 6966 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 6967 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 6968 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 6969 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 6970 6971 if (!ev->status) { 6972 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 6973 hci_iso_setup_path(bis); 6974 } 6975 } 6976 6977 /* In case BIG sync failed, notify each failed connection to 6978 * the user after all hci connections have been added 6979 */ 6980 if (ev->status) 6981 for (i = 0; i < ev->num_bis; i++) { 6982 u16 handle = le16_to_cpu(ev->bis[i]); 6983 6984 bis = hci_conn_hash_lookup_handle(hdev, handle); 6985 if (!bis) 6986 continue; 6987 6988 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 6989 hci_connect_cfm(bis, ev->status); 6990 } 6991 6992 unlock: 6993 /* Handle any other pending BIG sync command */ 6994 hci_le_big_create_sync_pending(hdev); 6995 6996 hci_dev_unlock(hdev); 6997 } 6998 6999 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7000 struct sk_buff *skb) 7001 { 7002 struct hci_evt_le_big_info_adv_report *ev = data; 7003 int mask = hdev->link_mode; 7004 __u8 flags = 0; 7005 struct hci_conn *pa_sync; 7006 7007 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7008 7009 hci_dev_lock(hdev); 7010 7011 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 7012 if (!(mask & HCI_LM_ACCEPT)) 7013 goto unlock; 7014 7015 if (!(flags & HCI_PROTO_DEFER)) 7016 goto unlock; 7017 7018 pa_sync = hci_conn_hash_lookup_pa_sync_handle 7019 (hdev, 7020 le16_to_cpu(ev->sync_handle)); 7021 7022 if (!pa_sync) 7023 goto unlock; 7024 7025 pa_sync->iso_qos.bcast.encryption = ev->encryption; 7026 7027 /* Notify iso layer */ 7028 hci_connect_cfm(pa_sync, 0); 7029 7030 unlock: 7031 hci_dev_unlock(hdev); 7032 } 7033 7034 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7035 [_op] = { \ 7036 .func = _func, \ 7037 .min_len = _min_len, \ 7038 .max_len = _max_len, \ 7039 } 7040 7041 #define HCI_LE_EV(_op, _func, _len) \ 7042 HCI_LE_EV_VL(_op, _func, _len, _len) 7043 7044 #define HCI_LE_EV_STATUS(_op, _func) \ 7045 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7046 7047 /* Entries in this table shall have their position according to the subevent 7048 * opcode they handle so the use of the macros above is recommend since it does 7049 * attempt to initialize at its proper index using Designated Initializers that 7050 * way events without a callback function can be ommited. 7051 */ 7052 static const struct hci_le_ev { 7053 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7054 u16 min_len; 7055 u16 max_len; 7056 } hci_le_ev_table[U8_MAX + 1] = { 7057 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7058 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7059 sizeof(struct hci_ev_le_conn_complete)), 7060 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7061 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7062 sizeof(struct hci_ev_le_advertising_report), 7063 HCI_MAX_EVENT_SIZE), 7064 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7065 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7066 hci_le_conn_update_complete_evt, 7067 sizeof(struct hci_ev_le_conn_update_complete)), 7068 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7069 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7070 hci_le_remote_feat_complete_evt, 7071 sizeof(struct hci_ev_le_remote_feat_complete)), 7072 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7073 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7074 sizeof(struct hci_ev_le_ltk_req)), 7075 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7076 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7077 hci_le_remote_conn_param_req_evt, 7078 sizeof(struct hci_ev_le_remote_conn_param_req)), 7079 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7080 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7081 hci_le_enh_conn_complete_evt, 7082 sizeof(struct hci_ev_le_enh_conn_complete)), 7083 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7084 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7085 sizeof(struct hci_ev_le_direct_adv_report), 7086 HCI_MAX_EVENT_SIZE), 7087 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7088 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7089 sizeof(struct hci_ev_le_phy_update_complete)), 7090 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7091 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7092 sizeof(struct hci_ev_le_ext_adv_report), 7093 HCI_MAX_EVENT_SIZE), 7094 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7095 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7096 hci_le_pa_sync_estabilished_evt, 7097 sizeof(struct hci_ev_le_pa_sync_established)), 7098 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7099 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7100 hci_le_per_adv_report_evt, 7101 sizeof(struct hci_ev_le_per_adv_report), 7102 HCI_MAX_EVENT_SIZE), 7103 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7104 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7105 sizeof(struct hci_evt_le_ext_adv_set_term)), 7106 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7107 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7108 sizeof(struct hci_evt_le_cis_established)), 7109 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7110 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7111 sizeof(struct hci_evt_le_cis_req)), 7112 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7113 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7114 hci_le_create_big_complete_evt, 7115 sizeof(struct hci_evt_le_create_big_complete), 7116 HCI_MAX_EVENT_SIZE), 7117 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7118 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7119 hci_le_big_sync_established_evt, 7120 sizeof(struct hci_evt_le_big_sync_estabilished), 7121 HCI_MAX_EVENT_SIZE), 7122 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7123 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7124 hci_le_big_info_adv_report_evt, 7125 sizeof(struct hci_evt_le_big_info_adv_report), 7126 HCI_MAX_EVENT_SIZE), 7127 }; 7128 7129 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7130 struct sk_buff *skb, u16 *opcode, u8 *status, 7131 hci_req_complete_t *req_complete, 7132 hci_req_complete_skb_t *req_complete_skb) 7133 { 7134 struct hci_ev_le_meta *ev = data; 7135 const struct hci_le_ev *subev; 7136 7137 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7138 7139 /* Only match event if command OGF is for LE */ 7140 if (hdev->req_skb && 7141 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 && 7142 hci_skb_event(hdev->req_skb) == ev->subevent) { 7143 *opcode = hci_skb_opcode(hdev->req_skb); 7144 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7145 req_complete_skb); 7146 } 7147 7148 subev = &hci_le_ev_table[ev->subevent]; 7149 if (!subev->func) 7150 return; 7151 7152 if (skb->len < subev->min_len) { 7153 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7154 ev->subevent, skb->len, subev->min_len); 7155 return; 7156 } 7157 7158 /* Just warn if the length is over max_len size it still be 7159 * possible to partially parse the event so leave to callback to 7160 * decide if that is acceptable. 7161 */ 7162 if (skb->len > subev->max_len) 7163 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7164 ev->subevent, skb->len, subev->max_len); 7165 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7166 if (!data) 7167 return; 7168 7169 subev->func(hdev, data, skb); 7170 } 7171 7172 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7173 u8 event, struct sk_buff *skb) 7174 { 7175 struct hci_ev_cmd_complete *ev; 7176 struct hci_event_hdr *hdr; 7177 7178 if (!skb) 7179 return false; 7180 7181 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7182 if (!hdr) 7183 return false; 7184 7185 if (event) { 7186 if (hdr->evt != event) 7187 return false; 7188 return true; 7189 } 7190 7191 /* Check if request ended in Command Status - no way to retrieve 7192 * any extra parameters in this case. 7193 */ 7194 if (hdr->evt == HCI_EV_CMD_STATUS) 7195 return false; 7196 7197 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7198 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7199 hdr->evt); 7200 return false; 7201 } 7202 7203 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7204 if (!ev) 7205 return false; 7206 7207 if (opcode != __le16_to_cpu(ev->opcode)) { 7208 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7209 __le16_to_cpu(ev->opcode)); 7210 return false; 7211 } 7212 7213 return true; 7214 } 7215 7216 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7217 struct sk_buff *skb) 7218 { 7219 struct hci_ev_le_advertising_info *adv; 7220 struct hci_ev_le_direct_adv_info *direct_adv; 7221 struct hci_ev_le_ext_adv_info *ext_adv; 7222 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7223 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7224 7225 hci_dev_lock(hdev); 7226 7227 /* If we are currently suspended and this is the first BT event seen, 7228 * save the wake reason associated with the event. 7229 */ 7230 if (!hdev->suspended || hdev->wake_reason) 7231 goto unlock; 7232 7233 /* Default to remote wake. Values for wake_reason are documented in the 7234 * Bluez mgmt api docs. 7235 */ 7236 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7237 7238 /* Once configured for remote wakeup, we should only wake up for 7239 * reconnections. It's useful to see which device is waking us up so 7240 * keep track of the bdaddr of the connection event that woke us up. 7241 */ 7242 if (event == HCI_EV_CONN_REQUEST) { 7243 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7244 hdev->wake_addr_type = BDADDR_BREDR; 7245 } else if (event == HCI_EV_CONN_COMPLETE) { 7246 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7247 hdev->wake_addr_type = BDADDR_BREDR; 7248 } else if (event == HCI_EV_LE_META) { 7249 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7250 u8 subevent = le_ev->subevent; 7251 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7252 u8 num_reports = *ptr; 7253 7254 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7255 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7256 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7257 num_reports) { 7258 adv = (void *)(ptr + 1); 7259 direct_adv = (void *)(ptr + 1); 7260 ext_adv = (void *)(ptr + 1); 7261 7262 switch (subevent) { 7263 case HCI_EV_LE_ADVERTISING_REPORT: 7264 bacpy(&hdev->wake_addr, &adv->bdaddr); 7265 hdev->wake_addr_type = adv->bdaddr_type; 7266 break; 7267 case HCI_EV_LE_DIRECT_ADV_REPORT: 7268 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7269 hdev->wake_addr_type = direct_adv->bdaddr_type; 7270 break; 7271 case HCI_EV_LE_EXT_ADV_REPORT: 7272 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7273 hdev->wake_addr_type = ext_adv->bdaddr_type; 7274 break; 7275 } 7276 } 7277 } else { 7278 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7279 } 7280 7281 unlock: 7282 hci_dev_unlock(hdev); 7283 } 7284 7285 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7286 [_op] = { \ 7287 .req = false, \ 7288 .func = _func, \ 7289 .min_len = _min_len, \ 7290 .max_len = _max_len, \ 7291 } 7292 7293 #define HCI_EV(_op, _func, _len) \ 7294 HCI_EV_VL(_op, _func, _len, _len) 7295 7296 #define HCI_EV_STATUS(_op, _func) \ 7297 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7298 7299 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7300 [_op] = { \ 7301 .req = true, \ 7302 .func_req = _func, \ 7303 .min_len = _min_len, \ 7304 .max_len = _max_len, \ 7305 } 7306 7307 #define HCI_EV_REQ(_op, _func, _len) \ 7308 HCI_EV_REQ_VL(_op, _func, _len, _len) 7309 7310 /* Entries in this table shall have their position according to the event opcode 7311 * they handle so the use of the macros above is recommend since it does attempt 7312 * to initialize at its proper index using Designated Initializers that way 7313 * events without a callback function don't have entered. 7314 */ 7315 static const struct hci_ev { 7316 bool req; 7317 union { 7318 void (*func)(struct hci_dev *hdev, void *data, 7319 struct sk_buff *skb); 7320 void (*func_req)(struct hci_dev *hdev, void *data, 7321 struct sk_buff *skb, u16 *opcode, u8 *status, 7322 hci_req_complete_t *req_complete, 7323 hci_req_complete_skb_t *req_complete_skb); 7324 }; 7325 u16 min_len; 7326 u16 max_len; 7327 } hci_ev_table[U8_MAX + 1] = { 7328 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7329 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7330 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7331 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7332 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7333 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7334 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7335 sizeof(struct hci_ev_conn_complete)), 7336 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7337 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7338 sizeof(struct hci_ev_conn_request)), 7339 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7340 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7341 sizeof(struct hci_ev_disconn_complete)), 7342 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7343 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7344 sizeof(struct hci_ev_auth_complete)), 7345 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7346 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7347 sizeof(struct hci_ev_remote_name)), 7348 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7349 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7350 sizeof(struct hci_ev_encrypt_change)), 7351 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7352 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7353 hci_change_link_key_complete_evt, 7354 sizeof(struct hci_ev_change_link_key_complete)), 7355 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7356 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7357 sizeof(struct hci_ev_remote_features)), 7358 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7359 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7360 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7361 /* [0x0f = HCI_EV_CMD_STATUS] */ 7362 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7363 sizeof(struct hci_ev_cmd_status)), 7364 /* [0x10 = HCI_EV_CMD_STATUS] */ 7365 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7366 sizeof(struct hci_ev_hardware_error)), 7367 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7368 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7369 sizeof(struct hci_ev_role_change)), 7370 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7371 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7372 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7373 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7374 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7375 sizeof(struct hci_ev_mode_change)), 7376 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7377 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7378 sizeof(struct hci_ev_pin_code_req)), 7379 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7380 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7381 sizeof(struct hci_ev_link_key_req)), 7382 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7383 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7384 sizeof(struct hci_ev_link_key_notify)), 7385 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7386 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7387 sizeof(struct hci_ev_clock_offset)), 7388 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7389 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7390 sizeof(struct hci_ev_pkt_type_change)), 7391 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7392 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7393 sizeof(struct hci_ev_pscan_rep_mode)), 7394 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7395 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7396 hci_inquiry_result_with_rssi_evt, 7397 sizeof(struct hci_ev_inquiry_result_rssi), 7398 HCI_MAX_EVENT_SIZE), 7399 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7400 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7401 sizeof(struct hci_ev_remote_ext_features)), 7402 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7403 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7404 sizeof(struct hci_ev_sync_conn_complete)), 7405 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7406 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7407 hci_extended_inquiry_result_evt, 7408 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7409 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7410 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7411 sizeof(struct hci_ev_key_refresh_complete)), 7412 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7413 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7414 sizeof(struct hci_ev_io_capa_request)), 7415 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7416 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7417 sizeof(struct hci_ev_io_capa_reply)), 7418 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7419 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7420 sizeof(struct hci_ev_user_confirm_req)), 7421 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7422 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7423 sizeof(struct hci_ev_user_passkey_req)), 7424 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7425 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7426 sizeof(struct hci_ev_remote_oob_data_request)), 7427 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7428 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7429 sizeof(struct hci_ev_simple_pair_complete)), 7430 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7431 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7432 sizeof(struct hci_ev_user_passkey_notify)), 7433 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7434 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7435 sizeof(struct hci_ev_keypress_notify)), 7436 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7437 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7438 sizeof(struct hci_ev_remote_host_features)), 7439 /* [0x3e = HCI_EV_LE_META] */ 7440 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7441 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7442 /* [0xff = HCI_EV_VENDOR] */ 7443 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7444 }; 7445 7446 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7447 u16 *opcode, u8 *status, 7448 hci_req_complete_t *req_complete, 7449 hci_req_complete_skb_t *req_complete_skb) 7450 { 7451 const struct hci_ev *ev = &hci_ev_table[event]; 7452 void *data; 7453 7454 if (!ev->func) 7455 return; 7456 7457 if (skb->len < ev->min_len) { 7458 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7459 event, skb->len, ev->min_len); 7460 return; 7461 } 7462 7463 /* Just warn if the length is over max_len size it still be 7464 * possible to partially parse the event so leave to callback to 7465 * decide if that is acceptable. 7466 */ 7467 if (skb->len > ev->max_len) 7468 bt_dev_warn_ratelimited(hdev, 7469 "unexpected event 0x%2.2x length: %u > %u", 7470 event, skb->len, ev->max_len); 7471 7472 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7473 if (!data) 7474 return; 7475 7476 if (ev->req) 7477 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7478 req_complete_skb); 7479 else 7480 ev->func(hdev, data, skb); 7481 } 7482 7483 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7484 { 7485 struct hci_event_hdr *hdr = (void *) skb->data; 7486 hci_req_complete_t req_complete = NULL; 7487 hci_req_complete_skb_t req_complete_skb = NULL; 7488 struct sk_buff *orig_skb = NULL; 7489 u8 status = 0, event, req_evt = 0; 7490 u16 opcode = HCI_OP_NOP; 7491 7492 if (skb->len < sizeof(*hdr)) { 7493 bt_dev_err(hdev, "Malformed HCI Event"); 7494 goto done; 7495 } 7496 7497 kfree_skb(hdev->recv_event); 7498 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7499 7500 event = hdr->evt; 7501 if (!event) { 7502 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7503 event); 7504 goto done; 7505 } 7506 7507 /* Only match event if command OGF is not for LE */ 7508 if (hdev->req_skb && 7509 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && 7510 hci_skb_event(hdev->req_skb) == event) { 7511 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), 7512 status, &req_complete, &req_complete_skb); 7513 req_evt = event; 7514 } 7515 7516 /* If it looks like we might end up having to call 7517 * req_complete_skb, store a pristine copy of the skb since the 7518 * various handlers may modify the original one through 7519 * skb_pull() calls, etc. 7520 */ 7521 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7522 event == HCI_EV_CMD_COMPLETE) 7523 orig_skb = skb_clone(skb, GFP_KERNEL); 7524 7525 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7526 7527 /* Store wake reason if we're suspended */ 7528 hci_store_wake_reason(hdev, event, skb); 7529 7530 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7531 7532 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7533 &req_complete_skb); 7534 7535 if (req_complete) { 7536 req_complete(hdev, status, opcode); 7537 } else if (req_complete_skb) { 7538 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7539 kfree_skb(orig_skb); 7540 orig_skb = NULL; 7541 } 7542 req_complete_skb(hdev, status, opcode, orig_skb); 7543 } 7544 7545 done: 7546 kfree_skb(orig_skb); 7547 kfree_skb(skb); 7548 hdev->stat.evt_rx++; 7549 } 7550