1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 Copyright 2023 NXP 5 6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License version 2 as 10 published by the Free Software Foundation; 11 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 23 SOFTWARE IS DISCLAIMED. 24 */ 25 26 /* Bluetooth HCI event handling. */ 27 28 #include <asm/unaligned.h> 29 #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_request.h" 37 #include "hci_debugfs.h" 38 #include "hci_codec.h" 39 #include "smp.h" 40 #include "msft.h" 41 #include "eir.h" 42 43 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ 44 "\x00\x00\x00\x00\x00\x00\x00\x00" 45 46 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000) 47 48 /* Handle HCI Event packets */ 49 50 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 51 u8 ev, size_t len) 52 { 53 void *data; 54 55 data = skb_pull_data(skb, len); 56 if (!data) 57 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev); 58 59 return data; 60 } 61 62 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 63 u16 op, size_t len) 64 { 65 void *data; 66 67 data = skb_pull_data(skb, len); 68 if (!data) 69 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op); 70 71 return data; 72 } 73 74 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 75 u8 ev, size_t len) 76 { 77 void *data; 78 79 data = skb_pull_data(skb, len); 80 if (!data) 81 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev); 82 83 return data; 84 } 85 86 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data, 87 struct sk_buff *skb) 88 { 89 struct hci_ev_status *rp = data; 90 91 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 92 93 /* It is possible that we receive Inquiry Complete event right 94 * before we receive Inquiry Cancel Command Complete event, in 95 * which case the latter event should have status of Command 96 * Disallowed. This should not be treated as error, since 97 * we actually achieve what Inquiry Cancel wants to achieve, 98 * which is to end the last Inquiry session. 99 */ 100 if (rp->status == HCI_ERROR_COMMAND_DISALLOWED && !test_bit(HCI_INQUIRY, &hdev->flags)) { 101 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command"); 102 rp->status = 0x00; 103 } 104 105 if (rp->status) 106 return rp->status; 107 108 clear_bit(HCI_INQUIRY, &hdev->flags); 109 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 110 wake_up_bit(&hdev->flags, HCI_INQUIRY); 111 112 hci_dev_lock(hdev); 113 /* Set discovery state to stopped if we're not doing LE active 114 * scanning. 115 */ 116 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 117 hdev->le_scan_type != LE_SCAN_ACTIVE) 118 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 119 hci_dev_unlock(hdev); 120 121 return rp->status; 122 } 123 124 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data, 125 struct sk_buff *skb) 126 { 127 struct hci_ev_status *rp = data; 128 129 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 130 131 if (rp->status) 132 return rp->status; 133 134 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ); 135 136 return rp->status; 137 } 138 139 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data, 140 struct sk_buff *skb) 141 { 142 struct hci_ev_status *rp = data; 143 144 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 145 146 if (rp->status) 147 return rp->status; 148 149 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); 150 151 return rp->status; 152 } 153 154 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data, 155 struct sk_buff *skb) 156 { 157 struct hci_ev_status *rp = data; 158 159 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 160 161 return rp->status; 162 } 163 164 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data, 165 struct sk_buff *skb) 166 { 167 struct hci_rp_role_discovery *rp = data; 168 struct hci_conn *conn; 169 170 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 171 172 if (rp->status) 173 return rp->status; 174 175 hci_dev_lock(hdev); 176 177 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 178 if (conn) 179 conn->role = rp->role; 180 181 hci_dev_unlock(hdev); 182 183 return rp->status; 184 } 185 186 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data, 187 struct sk_buff *skb) 188 { 189 struct hci_rp_read_link_policy *rp = data; 190 struct hci_conn *conn; 191 192 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 193 194 if (rp->status) 195 return rp->status; 196 197 hci_dev_lock(hdev); 198 199 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 200 if (conn) 201 conn->link_policy = __le16_to_cpu(rp->policy); 202 203 hci_dev_unlock(hdev); 204 205 return rp->status; 206 } 207 208 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data, 209 struct sk_buff *skb) 210 { 211 struct hci_rp_write_link_policy *rp = data; 212 struct hci_conn *conn; 213 void *sent; 214 215 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 216 217 if (rp->status) 218 return rp->status; 219 220 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY); 221 if (!sent) 222 return rp->status; 223 224 hci_dev_lock(hdev); 225 226 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 227 if (conn) 228 conn->link_policy = get_unaligned_le16(sent + 2); 229 230 hci_dev_unlock(hdev); 231 232 return rp->status; 233 } 234 235 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data, 236 struct sk_buff *skb) 237 { 238 struct hci_rp_read_def_link_policy *rp = data; 239 240 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 241 242 if (rp->status) 243 return rp->status; 244 245 hdev->link_policy = __le16_to_cpu(rp->policy); 246 247 return rp->status; 248 } 249 250 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data, 251 struct sk_buff *skb) 252 { 253 struct hci_ev_status *rp = data; 254 void *sent; 255 256 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 257 258 if (rp->status) 259 return rp->status; 260 261 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY); 262 if (!sent) 263 return rp->status; 264 265 hdev->link_policy = get_unaligned_le16(sent); 266 267 return rp->status; 268 } 269 270 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb) 271 { 272 struct hci_ev_status *rp = data; 273 274 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 275 276 clear_bit(HCI_RESET, &hdev->flags); 277 278 if (rp->status) 279 return rp->status; 280 281 /* Reset all non-persistent flags */ 282 hci_dev_clear_volatile_flags(hdev); 283 284 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 285 286 hdev->inq_tx_power = HCI_TX_POWER_INVALID; 287 hdev->adv_tx_power = HCI_TX_POWER_INVALID; 288 289 memset(hdev->adv_data, 0, sizeof(hdev->adv_data)); 290 hdev->adv_data_len = 0; 291 292 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data)); 293 hdev->scan_rsp_data_len = 0; 294 295 hdev->le_scan_type = LE_SCAN_PASSIVE; 296 297 hdev->ssp_debug_mode = 0; 298 299 hci_bdaddr_list_clear(&hdev->le_accept_list); 300 hci_bdaddr_list_clear(&hdev->le_resolv_list); 301 302 return rp->status; 303 } 304 305 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data, 306 struct sk_buff *skb) 307 { 308 struct hci_rp_read_stored_link_key *rp = data; 309 struct hci_cp_read_stored_link_key *sent; 310 311 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 312 313 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY); 314 if (!sent) 315 return rp->status; 316 317 if (!rp->status && sent->read_all == 0x01) { 318 hdev->stored_max_keys = le16_to_cpu(rp->max_keys); 319 hdev->stored_num_keys = le16_to_cpu(rp->num_keys); 320 } 321 322 return rp->status; 323 } 324 325 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data, 326 struct sk_buff *skb) 327 { 328 struct hci_rp_delete_stored_link_key *rp = data; 329 u16 num_keys; 330 331 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 332 333 if (rp->status) 334 return rp->status; 335 336 num_keys = le16_to_cpu(rp->num_keys); 337 338 if (num_keys <= hdev->stored_num_keys) 339 hdev->stored_num_keys -= num_keys; 340 else 341 hdev->stored_num_keys = 0; 342 343 return rp->status; 344 } 345 346 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data, 347 struct sk_buff *skb) 348 { 349 struct hci_ev_status *rp = data; 350 void *sent; 351 352 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 353 354 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME); 355 if (!sent) 356 return rp->status; 357 358 hci_dev_lock(hdev); 359 360 if (hci_dev_test_flag(hdev, HCI_MGMT)) 361 mgmt_set_local_name_complete(hdev, sent, rp->status); 362 else if (!rp->status) 363 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); 364 365 hci_dev_unlock(hdev); 366 367 return rp->status; 368 } 369 370 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data, 371 struct sk_buff *skb) 372 { 373 struct hci_rp_read_local_name *rp = data; 374 375 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 376 377 if (rp->status) 378 return rp->status; 379 380 if (hci_dev_test_flag(hdev, HCI_SETUP) || 381 hci_dev_test_flag(hdev, HCI_CONFIG)) 382 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH); 383 384 return rp->status; 385 } 386 387 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data, 388 struct sk_buff *skb) 389 { 390 struct hci_ev_status *rp = data; 391 void *sent; 392 393 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 394 395 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE); 396 if (!sent) 397 return rp->status; 398 399 hci_dev_lock(hdev); 400 401 if (!rp->status) { 402 __u8 param = *((__u8 *) sent); 403 404 if (param == AUTH_ENABLED) 405 set_bit(HCI_AUTH, &hdev->flags); 406 else 407 clear_bit(HCI_AUTH, &hdev->flags); 408 } 409 410 if (hci_dev_test_flag(hdev, HCI_MGMT)) 411 mgmt_auth_enable_complete(hdev, rp->status); 412 413 hci_dev_unlock(hdev); 414 415 return rp->status; 416 } 417 418 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data, 419 struct sk_buff *skb) 420 { 421 struct hci_ev_status *rp = data; 422 __u8 param; 423 void *sent; 424 425 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 426 427 if (rp->status) 428 return rp->status; 429 430 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE); 431 if (!sent) 432 return rp->status; 433 434 param = *((__u8 *) sent); 435 436 if (param) 437 set_bit(HCI_ENCRYPT, &hdev->flags); 438 else 439 clear_bit(HCI_ENCRYPT, &hdev->flags); 440 441 return rp->status; 442 } 443 444 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data, 445 struct sk_buff *skb) 446 { 447 struct hci_ev_status *rp = data; 448 __u8 param; 449 void *sent; 450 451 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 452 453 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE); 454 if (!sent) 455 return rp->status; 456 457 param = *((__u8 *) sent); 458 459 hci_dev_lock(hdev); 460 461 if (rp->status) { 462 hdev->discov_timeout = 0; 463 goto done; 464 } 465 466 if (param & SCAN_INQUIRY) 467 set_bit(HCI_ISCAN, &hdev->flags); 468 else 469 clear_bit(HCI_ISCAN, &hdev->flags); 470 471 if (param & SCAN_PAGE) 472 set_bit(HCI_PSCAN, &hdev->flags); 473 else 474 clear_bit(HCI_PSCAN, &hdev->flags); 475 476 done: 477 hci_dev_unlock(hdev); 478 479 return rp->status; 480 } 481 482 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data, 483 struct sk_buff *skb) 484 { 485 struct hci_ev_status *rp = data; 486 struct hci_cp_set_event_filter *cp; 487 void *sent; 488 489 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 490 491 if (rp->status) 492 return rp->status; 493 494 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT); 495 if (!sent) 496 return rp->status; 497 498 cp = (struct hci_cp_set_event_filter *)sent; 499 500 if (cp->flt_type == HCI_FLT_CLEAR_ALL) 501 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 502 else 503 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 504 505 return rp->status; 506 } 507 508 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data, 509 struct sk_buff *skb) 510 { 511 struct hci_rp_read_class_of_dev *rp = data; 512 513 if (WARN_ON(!hdev)) 514 return HCI_ERROR_UNSPECIFIED; 515 516 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 517 518 if (rp->status) 519 return rp->status; 520 521 memcpy(hdev->dev_class, rp->dev_class, 3); 522 523 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2], 524 hdev->dev_class[1], hdev->dev_class[0]); 525 526 return rp->status; 527 } 528 529 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data, 530 struct sk_buff *skb) 531 { 532 struct hci_ev_status *rp = data; 533 void *sent; 534 535 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 536 537 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV); 538 if (!sent) 539 return rp->status; 540 541 hci_dev_lock(hdev); 542 543 if (!rp->status) 544 memcpy(hdev->dev_class, sent, 3); 545 546 if (hci_dev_test_flag(hdev, HCI_MGMT)) 547 mgmt_set_class_of_dev_complete(hdev, sent, rp->status); 548 549 hci_dev_unlock(hdev); 550 551 return rp->status; 552 } 553 554 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data, 555 struct sk_buff *skb) 556 { 557 struct hci_rp_read_voice_setting *rp = data; 558 __u16 setting; 559 560 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 561 562 if (rp->status) 563 return rp->status; 564 565 setting = __le16_to_cpu(rp->voice_setting); 566 567 if (hdev->voice_setting == setting) 568 return rp->status; 569 570 hdev->voice_setting = setting; 571 572 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 573 574 if (hdev->notify) 575 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 576 577 return rp->status; 578 } 579 580 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data, 581 struct sk_buff *skb) 582 { 583 struct hci_ev_status *rp = data; 584 __u16 setting; 585 void *sent; 586 587 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 588 589 if (rp->status) 590 return rp->status; 591 592 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING); 593 if (!sent) 594 return rp->status; 595 596 setting = get_unaligned_le16(sent); 597 598 if (hdev->voice_setting == setting) 599 return rp->status; 600 601 hdev->voice_setting = setting; 602 603 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 604 605 if (hdev->notify) 606 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 607 608 return rp->status; 609 } 610 611 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data, 612 struct sk_buff *skb) 613 { 614 struct hci_rp_read_num_supported_iac *rp = data; 615 616 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 617 618 if (rp->status) 619 return rp->status; 620 621 hdev->num_iac = rp->num_iac; 622 623 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac); 624 625 return rp->status; 626 } 627 628 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data, 629 struct sk_buff *skb) 630 { 631 struct hci_ev_status *rp = data; 632 struct hci_cp_write_ssp_mode *sent; 633 634 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 635 636 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE); 637 if (!sent) 638 return rp->status; 639 640 hci_dev_lock(hdev); 641 642 if (!rp->status) { 643 if (sent->mode) 644 hdev->features[1][0] |= LMP_HOST_SSP; 645 else 646 hdev->features[1][0] &= ~LMP_HOST_SSP; 647 } 648 649 if (!rp->status) { 650 if (sent->mode) 651 hci_dev_set_flag(hdev, HCI_SSP_ENABLED); 652 else 653 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); 654 } 655 656 hci_dev_unlock(hdev); 657 658 return rp->status; 659 } 660 661 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data, 662 struct sk_buff *skb) 663 { 664 struct hci_ev_status *rp = data; 665 struct hci_cp_write_sc_support *sent; 666 667 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 668 669 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT); 670 if (!sent) 671 return rp->status; 672 673 hci_dev_lock(hdev); 674 675 if (!rp->status) { 676 if (sent->support) 677 hdev->features[1][0] |= LMP_HOST_SC; 678 else 679 hdev->features[1][0] &= ~LMP_HOST_SC; 680 } 681 682 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) { 683 if (sent->support) 684 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 685 else 686 hci_dev_clear_flag(hdev, HCI_SC_ENABLED); 687 } 688 689 hci_dev_unlock(hdev); 690 691 return rp->status; 692 } 693 694 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data, 695 struct sk_buff *skb) 696 { 697 struct hci_rp_read_local_version *rp = data; 698 699 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 700 701 if (rp->status) 702 return rp->status; 703 704 if (hci_dev_test_flag(hdev, HCI_SETUP) || 705 hci_dev_test_flag(hdev, HCI_CONFIG)) { 706 hdev->hci_ver = rp->hci_ver; 707 hdev->hci_rev = __le16_to_cpu(rp->hci_rev); 708 hdev->lmp_ver = rp->lmp_ver; 709 hdev->manufacturer = __le16_to_cpu(rp->manufacturer); 710 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver); 711 } 712 713 return rp->status; 714 } 715 716 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data, 717 struct sk_buff *skb) 718 { 719 struct hci_rp_read_enc_key_size *rp = data; 720 struct hci_conn *conn; 721 u16 handle; 722 u8 status = rp->status; 723 724 bt_dev_dbg(hdev, "status 0x%2.2x", status); 725 726 handle = le16_to_cpu(rp->handle); 727 728 hci_dev_lock(hdev); 729 730 conn = hci_conn_hash_lookup_handle(hdev, handle); 731 if (!conn) { 732 status = 0xFF; 733 goto done; 734 } 735 736 /* While unexpected, the read_enc_key_size command may fail. The most 737 * secure approach is to then assume the key size is 0 to force a 738 * disconnection. 739 */ 740 if (status) { 741 bt_dev_err(hdev, "failed to read key size for handle %u", 742 handle); 743 conn->enc_key_size = 0; 744 } else { 745 conn->enc_key_size = rp->key_size; 746 status = 0; 747 748 if (conn->enc_key_size < hdev->min_enc_key_size) { 749 /* As slave role, the conn->state has been set to 750 * BT_CONNECTED and l2cap conn req might not be received 751 * yet, at this moment the l2cap layer almost does 752 * nothing with the non-zero status. 753 * So we also clear encrypt related bits, and then the 754 * handler of l2cap conn req will get the right secure 755 * state at a later time. 756 */ 757 status = HCI_ERROR_AUTH_FAILURE; 758 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 759 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 760 } 761 } 762 763 hci_encrypt_cfm(conn, status); 764 765 done: 766 hci_dev_unlock(hdev); 767 768 return status; 769 } 770 771 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data, 772 struct sk_buff *skb) 773 { 774 struct hci_rp_read_local_commands *rp = data; 775 776 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 777 778 if (rp->status) 779 return rp->status; 780 781 if (hci_dev_test_flag(hdev, HCI_SETUP) || 782 hci_dev_test_flag(hdev, HCI_CONFIG)) 783 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); 784 785 return rp->status; 786 } 787 788 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data, 789 struct sk_buff *skb) 790 { 791 struct hci_rp_read_auth_payload_to *rp = data; 792 struct hci_conn *conn; 793 794 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 795 796 if (rp->status) 797 return rp->status; 798 799 hci_dev_lock(hdev); 800 801 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 802 if (conn) 803 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); 804 805 hci_dev_unlock(hdev); 806 807 return rp->status; 808 } 809 810 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data, 811 struct sk_buff *skb) 812 { 813 struct hci_rp_write_auth_payload_to *rp = data; 814 struct hci_conn *conn; 815 void *sent; 816 817 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 818 819 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); 820 if (!sent) 821 return rp->status; 822 823 hci_dev_lock(hdev); 824 825 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 826 if (!conn) { 827 rp->status = 0xff; 828 goto unlock; 829 } 830 831 if (!rp->status) 832 conn->auth_payload_timeout = get_unaligned_le16(sent + 2); 833 834 unlock: 835 hci_dev_unlock(hdev); 836 837 return rp->status; 838 } 839 840 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data, 841 struct sk_buff *skb) 842 { 843 struct hci_rp_read_local_features *rp = data; 844 845 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 846 847 if (rp->status) 848 return rp->status; 849 850 memcpy(hdev->features, rp->features, 8); 851 852 /* Adjust default settings according to features 853 * supported by device. */ 854 855 if (hdev->features[0][0] & LMP_3SLOT) 856 hdev->pkt_type |= (HCI_DM3 | HCI_DH3); 857 858 if (hdev->features[0][0] & LMP_5SLOT) 859 hdev->pkt_type |= (HCI_DM5 | HCI_DH5); 860 861 if (hdev->features[0][1] & LMP_HV2) { 862 hdev->pkt_type |= (HCI_HV2); 863 hdev->esco_type |= (ESCO_HV2); 864 } 865 866 if (hdev->features[0][1] & LMP_HV3) { 867 hdev->pkt_type |= (HCI_HV3); 868 hdev->esco_type |= (ESCO_HV3); 869 } 870 871 if (lmp_esco_capable(hdev)) 872 hdev->esco_type |= (ESCO_EV3); 873 874 if (hdev->features[0][4] & LMP_EV4) 875 hdev->esco_type |= (ESCO_EV4); 876 877 if (hdev->features[0][4] & LMP_EV5) 878 hdev->esco_type |= (ESCO_EV5); 879 880 if (hdev->features[0][5] & LMP_EDR_ESCO_2M) 881 hdev->esco_type |= (ESCO_2EV3); 882 883 if (hdev->features[0][5] & LMP_EDR_ESCO_3M) 884 hdev->esco_type |= (ESCO_3EV3); 885 886 if (hdev->features[0][5] & LMP_EDR_3S_ESCO) 887 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); 888 889 return rp->status; 890 } 891 892 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data, 893 struct sk_buff *skb) 894 { 895 struct hci_rp_read_local_ext_features *rp = data; 896 897 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 898 899 if (rp->status) 900 return rp->status; 901 902 if (hdev->max_page < rp->max_page) { 903 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, 904 &hdev->quirks)) 905 bt_dev_warn(hdev, "broken local ext features page 2"); 906 else 907 hdev->max_page = rp->max_page; 908 } 909 910 if (rp->page < HCI_MAX_PAGES) 911 memcpy(hdev->features[rp->page], rp->features, 8); 912 913 return rp->status; 914 } 915 916 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, 917 struct sk_buff *skb) 918 { 919 struct hci_rp_read_buffer_size *rp = data; 920 921 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 922 923 if (rp->status) 924 return rp->status; 925 926 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); 927 hdev->sco_mtu = rp->sco_mtu; 928 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); 929 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); 930 931 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { 932 hdev->sco_mtu = 64; 933 hdev->sco_pkts = 8; 934 } 935 936 hdev->acl_cnt = hdev->acl_pkts; 937 hdev->sco_cnt = hdev->sco_pkts; 938 939 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, 940 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); 941 942 if (!hdev->acl_mtu || !hdev->acl_pkts) 943 return HCI_ERROR_INVALID_PARAMETERS; 944 945 return rp->status; 946 } 947 948 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data, 949 struct sk_buff *skb) 950 { 951 struct hci_rp_read_bd_addr *rp = data; 952 953 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 954 955 if (rp->status) 956 return rp->status; 957 958 if (test_bit(HCI_INIT, &hdev->flags)) 959 bacpy(&hdev->bdaddr, &rp->bdaddr); 960 961 if (hci_dev_test_flag(hdev, HCI_SETUP)) 962 bacpy(&hdev->setup_addr, &rp->bdaddr); 963 964 return rp->status; 965 } 966 967 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data, 968 struct sk_buff *skb) 969 { 970 struct hci_rp_read_local_pairing_opts *rp = data; 971 972 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 973 974 if (rp->status) 975 return rp->status; 976 977 if (hci_dev_test_flag(hdev, HCI_SETUP) || 978 hci_dev_test_flag(hdev, HCI_CONFIG)) { 979 hdev->pairing_opts = rp->pairing_opts; 980 hdev->max_enc_key_size = rp->max_key_size; 981 } 982 983 return rp->status; 984 } 985 986 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data, 987 struct sk_buff *skb) 988 { 989 struct hci_rp_read_page_scan_activity *rp = data; 990 991 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 992 993 if (rp->status) 994 return rp->status; 995 996 if (test_bit(HCI_INIT, &hdev->flags)) { 997 hdev->page_scan_interval = __le16_to_cpu(rp->interval); 998 hdev->page_scan_window = __le16_to_cpu(rp->window); 999 } 1000 1001 return rp->status; 1002 } 1003 1004 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data, 1005 struct sk_buff *skb) 1006 { 1007 struct hci_ev_status *rp = data; 1008 struct hci_cp_write_page_scan_activity *sent; 1009 1010 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1011 1012 if (rp->status) 1013 return rp->status; 1014 1015 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); 1016 if (!sent) 1017 return rp->status; 1018 1019 hdev->page_scan_interval = __le16_to_cpu(sent->interval); 1020 hdev->page_scan_window = __le16_to_cpu(sent->window); 1021 1022 return rp->status; 1023 } 1024 1025 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data, 1026 struct sk_buff *skb) 1027 { 1028 struct hci_rp_read_page_scan_type *rp = data; 1029 1030 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1031 1032 if (rp->status) 1033 return rp->status; 1034 1035 if (test_bit(HCI_INIT, &hdev->flags)) 1036 hdev->page_scan_type = rp->type; 1037 1038 return rp->status; 1039 } 1040 1041 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data, 1042 struct sk_buff *skb) 1043 { 1044 struct hci_ev_status *rp = data; 1045 u8 *type; 1046 1047 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1048 1049 if (rp->status) 1050 return rp->status; 1051 1052 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); 1053 if (type) 1054 hdev->page_scan_type = *type; 1055 1056 return rp->status; 1057 } 1058 1059 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, 1060 struct sk_buff *skb) 1061 { 1062 struct hci_rp_read_clock *rp = data; 1063 struct hci_cp_read_clock *cp; 1064 struct hci_conn *conn; 1065 1066 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1067 1068 if (rp->status) 1069 return rp->status; 1070 1071 hci_dev_lock(hdev); 1072 1073 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 1074 if (!cp) 1075 goto unlock; 1076 1077 if (cp->which == 0x00) { 1078 hdev->clock = le32_to_cpu(rp->clock); 1079 goto unlock; 1080 } 1081 1082 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1083 if (conn) { 1084 conn->clock = le32_to_cpu(rp->clock); 1085 conn->clock_accuracy = le16_to_cpu(rp->accuracy); 1086 } 1087 1088 unlock: 1089 hci_dev_unlock(hdev); 1090 return rp->status; 1091 } 1092 1093 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, 1094 struct sk_buff *skb) 1095 { 1096 struct hci_rp_read_inq_rsp_tx_power *rp = data; 1097 1098 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1099 1100 if (rp->status) 1101 return rp->status; 1102 1103 hdev->inq_tx_power = rp->tx_power; 1104 1105 return rp->status; 1106 } 1107 1108 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, 1109 struct sk_buff *skb) 1110 { 1111 struct hci_rp_read_def_err_data_reporting *rp = data; 1112 1113 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1114 1115 if (rp->status) 1116 return rp->status; 1117 1118 hdev->err_data_reporting = rp->err_data_reporting; 1119 1120 return rp->status; 1121 } 1122 1123 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, 1124 struct sk_buff *skb) 1125 { 1126 struct hci_ev_status *rp = data; 1127 struct hci_cp_write_def_err_data_reporting *cp; 1128 1129 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1130 1131 if (rp->status) 1132 return rp->status; 1133 1134 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); 1135 if (!cp) 1136 return rp->status; 1137 1138 hdev->err_data_reporting = cp->err_data_reporting; 1139 1140 return rp->status; 1141 } 1142 1143 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, 1144 struct sk_buff *skb) 1145 { 1146 struct hci_rp_pin_code_reply *rp = data; 1147 struct hci_cp_pin_code_reply *cp; 1148 struct hci_conn *conn; 1149 1150 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1151 1152 hci_dev_lock(hdev); 1153 1154 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1155 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); 1156 1157 if (rp->status) 1158 goto unlock; 1159 1160 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); 1161 if (!cp) 1162 goto unlock; 1163 1164 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 1165 if (conn) 1166 conn->pin_length = cp->pin_len; 1167 1168 unlock: 1169 hci_dev_unlock(hdev); 1170 return rp->status; 1171 } 1172 1173 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, 1174 struct sk_buff *skb) 1175 { 1176 struct hci_rp_pin_code_neg_reply *rp = data; 1177 1178 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1179 1180 hci_dev_lock(hdev); 1181 1182 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1183 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, 1184 rp->status); 1185 1186 hci_dev_unlock(hdev); 1187 1188 return rp->status; 1189 } 1190 1191 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, 1192 struct sk_buff *skb) 1193 { 1194 struct hci_rp_le_read_buffer_size *rp = data; 1195 1196 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1197 1198 if (rp->status) 1199 return rp->status; 1200 1201 hdev->le_mtu = __le16_to_cpu(rp->le_mtu); 1202 hdev->le_pkts = rp->le_max_pkt; 1203 1204 hdev->le_cnt = hdev->le_pkts; 1205 1206 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); 1207 1208 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 1209 return HCI_ERROR_INVALID_PARAMETERS; 1210 1211 return rp->status; 1212 } 1213 1214 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, 1215 struct sk_buff *skb) 1216 { 1217 struct hci_rp_le_read_local_features *rp = data; 1218 1219 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1220 1221 if (rp->status) 1222 return rp->status; 1223 1224 memcpy(hdev->le_features, rp->features, 8); 1225 1226 return rp->status; 1227 } 1228 1229 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, 1230 struct sk_buff *skb) 1231 { 1232 struct hci_rp_le_read_adv_tx_power *rp = data; 1233 1234 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1235 1236 if (rp->status) 1237 return rp->status; 1238 1239 hdev->adv_tx_power = rp->tx_power; 1240 1241 return rp->status; 1242 } 1243 1244 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, 1245 struct sk_buff *skb) 1246 { 1247 struct hci_rp_user_confirm_reply *rp = data; 1248 1249 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1250 1251 hci_dev_lock(hdev); 1252 1253 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1254 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, 1255 rp->status); 1256 1257 hci_dev_unlock(hdev); 1258 1259 return rp->status; 1260 } 1261 1262 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, 1263 struct sk_buff *skb) 1264 { 1265 struct hci_rp_user_confirm_reply *rp = data; 1266 1267 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1268 1269 hci_dev_lock(hdev); 1270 1271 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1272 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, 1273 ACL_LINK, 0, rp->status); 1274 1275 hci_dev_unlock(hdev); 1276 1277 return rp->status; 1278 } 1279 1280 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, 1281 struct sk_buff *skb) 1282 { 1283 struct hci_rp_user_confirm_reply *rp = data; 1284 1285 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1286 1287 hci_dev_lock(hdev); 1288 1289 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1290 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 1291 0, rp->status); 1292 1293 hci_dev_unlock(hdev); 1294 1295 return rp->status; 1296 } 1297 1298 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, 1299 struct sk_buff *skb) 1300 { 1301 struct hci_rp_user_confirm_reply *rp = data; 1302 1303 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1304 1305 hci_dev_lock(hdev); 1306 1307 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1308 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, 1309 ACL_LINK, 0, rp->status); 1310 1311 hci_dev_unlock(hdev); 1312 1313 return rp->status; 1314 } 1315 1316 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, 1317 struct sk_buff *skb) 1318 { 1319 struct hci_rp_read_local_oob_data *rp = data; 1320 1321 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1322 1323 return rp->status; 1324 } 1325 1326 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, 1327 struct sk_buff *skb) 1328 { 1329 struct hci_rp_read_local_oob_ext_data *rp = data; 1330 1331 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1332 1333 return rp->status; 1334 } 1335 1336 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, 1337 struct sk_buff *skb) 1338 { 1339 struct hci_ev_status *rp = data; 1340 bdaddr_t *sent; 1341 1342 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1343 1344 if (rp->status) 1345 return rp->status; 1346 1347 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); 1348 if (!sent) 1349 return rp->status; 1350 1351 hci_dev_lock(hdev); 1352 1353 bacpy(&hdev->random_addr, sent); 1354 1355 if (!bacmp(&hdev->rpa, sent)) { 1356 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 1357 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, 1358 secs_to_jiffies(hdev->rpa_timeout)); 1359 } 1360 1361 hci_dev_unlock(hdev); 1362 1363 return rp->status; 1364 } 1365 1366 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, 1367 struct sk_buff *skb) 1368 { 1369 struct hci_ev_status *rp = data; 1370 struct hci_cp_le_set_default_phy *cp; 1371 1372 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1373 1374 if (rp->status) 1375 return rp->status; 1376 1377 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); 1378 if (!cp) 1379 return rp->status; 1380 1381 hci_dev_lock(hdev); 1382 1383 hdev->le_tx_def_phys = cp->tx_phys; 1384 hdev->le_rx_def_phys = cp->rx_phys; 1385 1386 hci_dev_unlock(hdev); 1387 1388 return rp->status; 1389 } 1390 1391 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, 1392 struct sk_buff *skb) 1393 { 1394 struct hci_ev_status *rp = data; 1395 struct hci_cp_le_set_adv_set_rand_addr *cp; 1396 struct adv_info *adv; 1397 1398 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1399 1400 if (rp->status) 1401 return rp->status; 1402 1403 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); 1404 /* Update only in case the adv instance since handle 0x00 shall be using 1405 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and 1406 * non-extended adverting. 1407 */ 1408 if (!cp || !cp->handle) 1409 return rp->status; 1410 1411 hci_dev_lock(hdev); 1412 1413 adv = hci_find_adv_instance(hdev, cp->handle); 1414 if (adv) { 1415 bacpy(&adv->random_addr, &cp->bdaddr); 1416 if (!bacmp(&hdev->rpa, &cp->bdaddr)) { 1417 adv->rpa_expired = false; 1418 queue_delayed_work(hdev->workqueue, 1419 &adv->rpa_expired_cb, 1420 secs_to_jiffies(hdev->rpa_timeout)); 1421 } 1422 } 1423 1424 hci_dev_unlock(hdev); 1425 1426 return rp->status; 1427 } 1428 1429 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, 1430 struct sk_buff *skb) 1431 { 1432 struct hci_ev_status *rp = data; 1433 u8 *instance; 1434 int err; 1435 1436 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1437 1438 if (rp->status) 1439 return rp->status; 1440 1441 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); 1442 if (!instance) 1443 return rp->status; 1444 1445 hci_dev_lock(hdev); 1446 1447 err = hci_remove_adv_instance(hdev, *instance); 1448 if (!err) 1449 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, 1450 *instance); 1451 1452 hci_dev_unlock(hdev); 1453 1454 return rp->status; 1455 } 1456 1457 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, 1458 struct sk_buff *skb) 1459 { 1460 struct hci_ev_status *rp = data; 1461 struct adv_info *adv, *n; 1462 int err; 1463 1464 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1465 1466 if (rp->status) 1467 return rp->status; 1468 1469 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) 1470 return rp->status; 1471 1472 hci_dev_lock(hdev); 1473 1474 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 1475 u8 instance = adv->instance; 1476 1477 err = hci_remove_adv_instance(hdev, instance); 1478 if (!err) 1479 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), 1480 hdev, instance); 1481 } 1482 1483 hci_dev_unlock(hdev); 1484 1485 return rp->status; 1486 } 1487 1488 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, 1489 struct sk_buff *skb) 1490 { 1491 struct hci_rp_le_read_transmit_power *rp = data; 1492 1493 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1494 1495 if (rp->status) 1496 return rp->status; 1497 1498 hdev->min_le_tx_power = rp->min_le_tx_power; 1499 hdev->max_le_tx_power = rp->max_le_tx_power; 1500 1501 return rp->status; 1502 } 1503 1504 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, 1505 struct sk_buff *skb) 1506 { 1507 struct hci_ev_status *rp = data; 1508 struct hci_cp_le_set_privacy_mode *cp; 1509 struct hci_conn_params *params; 1510 1511 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1512 1513 if (rp->status) 1514 return rp->status; 1515 1516 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); 1517 if (!cp) 1518 return rp->status; 1519 1520 hci_dev_lock(hdev); 1521 1522 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); 1523 if (params) 1524 WRITE_ONCE(params->privacy_mode, cp->mode); 1525 1526 hci_dev_unlock(hdev); 1527 1528 return rp->status; 1529 } 1530 1531 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, 1532 struct sk_buff *skb) 1533 { 1534 struct hci_ev_status *rp = data; 1535 __u8 *sent; 1536 1537 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1538 1539 if (rp->status) 1540 return rp->status; 1541 1542 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); 1543 if (!sent) 1544 return rp->status; 1545 1546 hci_dev_lock(hdev); 1547 1548 /* If we're doing connection initiation as peripheral. Set a 1549 * timeout in case something goes wrong. 1550 */ 1551 if (*sent) { 1552 struct hci_conn *conn; 1553 1554 hci_dev_set_flag(hdev, HCI_LE_ADV); 1555 1556 conn = hci_lookup_le_connect(hdev); 1557 if (conn) 1558 queue_delayed_work(hdev->workqueue, 1559 &conn->le_conn_timeout, 1560 conn->conn_timeout); 1561 } else { 1562 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1563 } 1564 1565 hci_dev_unlock(hdev); 1566 1567 return rp->status; 1568 } 1569 1570 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, 1571 struct sk_buff *skb) 1572 { 1573 struct hci_cp_le_set_ext_adv_enable *cp; 1574 struct hci_cp_ext_adv_set *set; 1575 struct adv_info *adv = NULL, *n; 1576 struct hci_ev_status *rp = data; 1577 1578 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1579 1580 if (rp->status) 1581 return rp->status; 1582 1583 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); 1584 if (!cp) 1585 return rp->status; 1586 1587 set = (void *)cp->data; 1588 1589 hci_dev_lock(hdev); 1590 1591 if (cp->num_of_sets) 1592 adv = hci_find_adv_instance(hdev, set->handle); 1593 1594 if (cp->enable) { 1595 struct hci_conn *conn; 1596 1597 hci_dev_set_flag(hdev, HCI_LE_ADV); 1598 1599 if (adv && !adv->periodic) 1600 adv->enabled = true; 1601 1602 conn = hci_lookup_le_connect(hdev); 1603 if (conn) 1604 queue_delayed_work(hdev->workqueue, 1605 &conn->le_conn_timeout, 1606 conn->conn_timeout); 1607 } else { 1608 if (cp->num_of_sets) { 1609 if (adv) 1610 adv->enabled = false; 1611 1612 /* If just one instance was disabled check if there are 1613 * any other instance enabled before clearing HCI_LE_ADV 1614 */ 1615 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1616 list) { 1617 if (adv->enabled) 1618 goto unlock; 1619 } 1620 } else { 1621 /* All instances shall be considered disabled */ 1622 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1623 list) 1624 adv->enabled = false; 1625 } 1626 1627 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1628 } 1629 1630 unlock: 1631 hci_dev_unlock(hdev); 1632 return rp->status; 1633 } 1634 1635 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, 1636 struct sk_buff *skb) 1637 { 1638 struct hci_cp_le_set_scan_param *cp; 1639 struct hci_ev_status *rp = data; 1640 1641 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1642 1643 if (rp->status) 1644 return rp->status; 1645 1646 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); 1647 if (!cp) 1648 return rp->status; 1649 1650 hci_dev_lock(hdev); 1651 1652 hdev->le_scan_type = cp->type; 1653 1654 hci_dev_unlock(hdev); 1655 1656 return rp->status; 1657 } 1658 1659 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, 1660 struct sk_buff *skb) 1661 { 1662 struct hci_cp_le_set_ext_scan_params *cp; 1663 struct hci_ev_status *rp = data; 1664 struct hci_cp_le_scan_phy_params *phy_param; 1665 1666 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1667 1668 if (rp->status) 1669 return rp->status; 1670 1671 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); 1672 if (!cp) 1673 return rp->status; 1674 1675 phy_param = (void *)cp->data; 1676 1677 hci_dev_lock(hdev); 1678 1679 hdev->le_scan_type = phy_param->type; 1680 1681 hci_dev_unlock(hdev); 1682 1683 return rp->status; 1684 } 1685 1686 static bool has_pending_adv_report(struct hci_dev *hdev) 1687 { 1688 struct discovery_state *d = &hdev->discovery; 1689 1690 return bacmp(&d->last_adv_addr, BDADDR_ANY); 1691 } 1692 1693 static void clear_pending_adv_report(struct hci_dev *hdev) 1694 { 1695 struct discovery_state *d = &hdev->discovery; 1696 1697 bacpy(&d->last_adv_addr, BDADDR_ANY); 1698 d->last_adv_data_len = 0; 1699 } 1700 1701 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, 1702 u8 bdaddr_type, s8 rssi, u32 flags, 1703 u8 *data, u8 len) 1704 { 1705 struct discovery_state *d = &hdev->discovery; 1706 1707 if (len > max_adv_len(hdev)) 1708 return; 1709 1710 bacpy(&d->last_adv_addr, bdaddr); 1711 d->last_adv_addr_type = bdaddr_type; 1712 d->last_adv_rssi = rssi; 1713 d->last_adv_flags = flags; 1714 memcpy(d->last_adv_data, data, len); 1715 d->last_adv_data_len = len; 1716 } 1717 1718 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) 1719 { 1720 hci_dev_lock(hdev); 1721 1722 switch (enable) { 1723 case LE_SCAN_ENABLE: 1724 hci_dev_set_flag(hdev, HCI_LE_SCAN); 1725 if (hdev->le_scan_type == LE_SCAN_ACTIVE) 1726 clear_pending_adv_report(hdev); 1727 if (hci_dev_test_flag(hdev, HCI_MESH)) 1728 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 1729 break; 1730 1731 case LE_SCAN_DISABLE: 1732 /* We do this here instead of when setting DISCOVERY_STOPPED 1733 * since the latter would potentially require waiting for 1734 * inquiry to stop too. 1735 */ 1736 if (has_pending_adv_report(hdev)) { 1737 struct discovery_state *d = &hdev->discovery; 1738 1739 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 1740 d->last_adv_addr_type, NULL, 1741 d->last_adv_rssi, d->last_adv_flags, 1742 d->last_adv_data, 1743 d->last_adv_data_len, NULL, 0, 0); 1744 } 1745 1746 /* Cancel this timer so that we don't try to disable scanning 1747 * when it's already disabled. 1748 */ 1749 cancel_delayed_work(&hdev->le_scan_disable); 1750 1751 hci_dev_clear_flag(hdev, HCI_LE_SCAN); 1752 1753 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we 1754 * interrupted scanning due to a connect request. Mark 1755 * therefore discovery as stopped. 1756 */ 1757 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) 1758 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 1759 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && 1760 hdev->discovery.state == DISCOVERY_FINDING) 1761 queue_work(hdev->workqueue, &hdev->reenable_adv_work); 1762 1763 break; 1764 1765 default: 1766 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", 1767 enable); 1768 break; 1769 } 1770 1771 hci_dev_unlock(hdev); 1772 } 1773 1774 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, 1775 struct sk_buff *skb) 1776 { 1777 struct hci_cp_le_set_scan_enable *cp; 1778 struct hci_ev_status *rp = data; 1779 1780 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1781 1782 if (rp->status) 1783 return rp->status; 1784 1785 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); 1786 if (!cp) 1787 return rp->status; 1788 1789 le_set_scan_enable_complete(hdev, cp->enable); 1790 1791 return rp->status; 1792 } 1793 1794 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, 1795 struct sk_buff *skb) 1796 { 1797 struct hci_cp_le_set_ext_scan_enable *cp; 1798 struct hci_ev_status *rp = data; 1799 1800 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1801 1802 if (rp->status) 1803 return rp->status; 1804 1805 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); 1806 if (!cp) 1807 return rp->status; 1808 1809 le_set_scan_enable_complete(hdev, cp->enable); 1810 1811 return rp->status; 1812 } 1813 1814 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, 1815 struct sk_buff *skb) 1816 { 1817 struct hci_rp_le_read_num_supported_adv_sets *rp = data; 1818 1819 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, 1820 rp->num_of_sets); 1821 1822 if (rp->status) 1823 return rp->status; 1824 1825 hdev->le_num_of_adv_sets = rp->num_of_sets; 1826 1827 return rp->status; 1828 } 1829 1830 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, 1831 struct sk_buff *skb) 1832 { 1833 struct hci_rp_le_read_accept_list_size *rp = data; 1834 1835 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 1836 1837 if (rp->status) 1838 return rp->status; 1839 1840 hdev->le_accept_list_size = rp->size; 1841 1842 return rp->status; 1843 } 1844 1845 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, 1846 struct sk_buff *skb) 1847 { 1848 struct hci_ev_status *rp = data; 1849 1850 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1851 1852 if (rp->status) 1853 return rp->status; 1854 1855 hci_dev_lock(hdev); 1856 hci_bdaddr_list_clear(&hdev->le_accept_list); 1857 hci_dev_unlock(hdev); 1858 1859 return rp->status; 1860 } 1861 1862 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, 1863 struct sk_buff *skb) 1864 { 1865 struct hci_cp_le_add_to_accept_list *sent; 1866 struct hci_ev_status *rp = data; 1867 1868 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1869 1870 if (rp->status) 1871 return rp->status; 1872 1873 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); 1874 if (!sent) 1875 return rp->status; 1876 1877 hci_dev_lock(hdev); 1878 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, 1879 sent->bdaddr_type); 1880 hci_dev_unlock(hdev); 1881 1882 return rp->status; 1883 } 1884 1885 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, 1886 struct sk_buff *skb) 1887 { 1888 struct hci_cp_le_del_from_accept_list *sent; 1889 struct hci_ev_status *rp = data; 1890 1891 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1892 1893 if (rp->status) 1894 return rp->status; 1895 1896 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); 1897 if (!sent) 1898 return rp->status; 1899 1900 hci_dev_lock(hdev); 1901 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, 1902 sent->bdaddr_type); 1903 hci_dev_unlock(hdev); 1904 1905 return rp->status; 1906 } 1907 1908 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, 1909 struct sk_buff *skb) 1910 { 1911 struct hci_rp_le_read_supported_states *rp = data; 1912 1913 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1914 1915 if (rp->status) 1916 return rp->status; 1917 1918 memcpy(hdev->le_states, rp->le_states, 8); 1919 1920 return rp->status; 1921 } 1922 1923 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, 1924 struct sk_buff *skb) 1925 { 1926 struct hci_rp_le_read_def_data_len *rp = data; 1927 1928 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1929 1930 if (rp->status) 1931 return rp->status; 1932 1933 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); 1934 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); 1935 1936 return rp->status; 1937 } 1938 1939 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, 1940 struct sk_buff *skb) 1941 { 1942 struct hci_cp_le_write_def_data_len *sent; 1943 struct hci_ev_status *rp = data; 1944 1945 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1946 1947 if (rp->status) 1948 return rp->status; 1949 1950 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); 1951 if (!sent) 1952 return rp->status; 1953 1954 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); 1955 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); 1956 1957 return rp->status; 1958 } 1959 1960 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, 1961 struct sk_buff *skb) 1962 { 1963 struct hci_cp_le_add_to_resolv_list *sent; 1964 struct hci_ev_status *rp = data; 1965 1966 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1967 1968 if (rp->status) 1969 return rp->status; 1970 1971 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); 1972 if (!sent) 1973 return rp->status; 1974 1975 hci_dev_lock(hdev); 1976 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 1977 sent->bdaddr_type, sent->peer_irk, 1978 sent->local_irk); 1979 hci_dev_unlock(hdev); 1980 1981 return rp->status; 1982 } 1983 1984 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, 1985 struct sk_buff *skb) 1986 { 1987 struct hci_cp_le_del_from_resolv_list *sent; 1988 struct hci_ev_status *rp = data; 1989 1990 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1991 1992 if (rp->status) 1993 return rp->status; 1994 1995 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); 1996 if (!sent) 1997 return rp->status; 1998 1999 hci_dev_lock(hdev); 2000 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2001 sent->bdaddr_type); 2002 hci_dev_unlock(hdev); 2003 2004 return rp->status; 2005 } 2006 2007 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, 2008 struct sk_buff *skb) 2009 { 2010 struct hci_ev_status *rp = data; 2011 2012 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2013 2014 if (rp->status) 2015 return rp->status; 2016 2017 hci_dev_lock(hdev); 2018 hci_bdaddr_list_clear(&hdev->le_resolv_list); 2019 hci_dev_unlock(hdev); 2020 2021 return rp->status; 2022 } 2023 2024 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, 2025 struct sk_buff *skb) 2026 { 2027 struct hci_rp_le_read_resolv_list_size *rp = data; 2028 2029 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 2030 2031 if (rp->status) 2032 return rp->status; 2033 2034 hdev->le_resolv_list_size = rp->size; 2035 2036 return rp->status; 2037 } 2038 2039 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, 2040 struct sk_buff *skb) 2041 { 2042 struct hci_ev_status *rp = data; 2043 __u8 *sent; 2044 2045 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2046 2047 if (rp->status) 2048 return rp->status; 2049 2050 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); 2051 if (!sent) 2052 return rp->status; 2053 2054 hci_dev_lock(hdev); 2055 2056 if (*sent) 2057 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); 2058 else 2059 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); 2060 2061 hci_dev_unlock(hdev); 2062 2063 return rp->status; 2064 } 2065 2066 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, 2067 struct sk_buff *skb) 2068 { 2069 struct hci_rp_le_read_max_data_len *rp = data; 2070 2071 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2072 2073 if (rp->status) 2074 return rp->status; 2075 2076 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); 2077 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); 2078 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); 2079 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); 2080 2081 return rp->status; 2082 } 2083 2084 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, 2085 struct sk_buff *skb) 2086 { 2087 struct hci_cp_write_le_host_supported *sent; 2088 struct hci_ev_status *rp = data; 2089 2090 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2091 2092 if (rp->status) 2093 return rp->status; 2094 2095 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); 2096 if (!sent) 2097 return rp->status; 2098 2099 hci_dev_lock(hdev); 2100 2101 if (sent->le) { 2102 hdev->features[1][0] |= LMP_HOST_LE; 2103 hci_dev_set_flag(hdev, HCI_LE_ENABLED); 2104 } else { 2105 hdev->features[1][0] &= ~LMP_HOST_LE; 2106 hci_dev_clear_flag(hdev, HCI_LE_ENABLED); 2107 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 2108 } 2109 2110 if (sent->simul) 2111 hdev->features[1][0] |= LMP_HOST_LE_BREDR; 2112 else 2113 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; 2114 2115 hci_dev_unlock(hdev); 2116 2117 return rp->status; 2118 } 2119 2120 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, 2121 struct sk_buff *skb) 2122 { 2123 struct hci_cp_le_set_adv_param *cp; 2124 struct hci_ev_status *rp = data; 2125 2126 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2127 2128 if (rp->status) 2129 return rp->status; 2130 2131 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); 2132 if (!cp) 2133 return rp->status; 2134 2135 hci_dev_lock(hdev); 2136 hdev->adv_addr_type = cp->own_address_type; 2137 hci_dev_unlock(hdev); 2138 2139 return rp->status; 2140 } 2141 2142 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data, 2143 struct sk_buff *skb) 2144 { 2145 struct hci_rp_le_set_ext_adv_params *rp = data; 2146 struct hci_cp_le_set_ext_adv_params *cp; 2147 struct adv_info *adv_instance; 2148 2149 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2150 2151 if (rp->status) 2152 return rp->status; 2153 2154 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); 2155 if (!cp) 2156 return rp->status; 2157 2158 hci_dev_lock(hdev); 2159 hdev->adv_addr_type = cp->own_addr_type; 2160 if (!cp->handle) { 2161 /* Store in hdev for instance 0 */ 2162 hdev->adv_tx_power = rp->tx_power; 2163 } else { 2164 adv_instance = hci_find_adv_instance(hdev, cp->handle); 2165 if (adv_instance) 2166 adv_instance->tx_power = rp->tx_power; 2167 } 2168 /* Update adv data as tx power is known now */ 2169 hci_update_adv_data(hdev, cp->handle); 2170 2171 hci_dev_unlock(hdev); 2172 2173 return rp->status; 2174 } 2175 2176 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, 2177 struct sk_buff *skb) 2178 { 2179 struct hci_rp_read_rssi *rp = data; 2180 struct hci_conn *conn; 2181 2182 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2183 2184 if (rp->status) 2185 return rp->status; 2186 2187 hci_dev_lock(hdev); 2188 2189 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2190 if (conn) 2191 conn->rssi = rp->rssi; 2192 2193 hci_dev_unlock(hdev); 2194 2195 return rp->status; 2196 } 2197 2198 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, 2199 struct sk_buff *skb) 2200 { 2201 struct hci_cp_read_tx_power *sent; 2202 struct hci_rp_read_tx_power *rp = data; 2203 struct hci_conn *conn; 2204 2205 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2206 2207 if (rp->status) 2208 return rp->status; 2209 2210 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 2211 if (!sent) 2212 return rp->status; 2213 2214 hci_dev_lock(hdev); 2215 2216 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2217 if (!conn) 2218 goto unlock; 2219 2220 switch (sent->type) { 2221 case 0x00: 2222 conn->tx_power = rp->tx_power; 2223 break; 2224 case 0x01: 2225 conn->max_tx_power = rp->tx_power; 2226 break; 2227 } 2228 2229 unlock: 2230 hci_dev_unlock(hdev); 2231 return rp->status; 2232 } 2233 2234 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, 2235 struct sk_buff *skb) 2236 { 2237 struct hci_ev_status *rp = data; 2238 u8 *mode; 2239 2240 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2241 2242 if (rp->status) 2243 return rp->status; 2244 2245 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 2246 if (mode) 2247 hdev->ssp_debug_mode = *mode; 2248 2249 return rp->status; 2250 } 2251 2252 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 2253 { 2254 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2255 2256 if (status) 2257 return; 2258 2259 if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY)) 2260 set_bit(HCI_INQUIRY, &hdev->flags); 2261 } 2262 2263 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 2264 { 2265 struct hci_cp_create_conn *cp; 2266 struct hci_conn *conn; 2267 2268 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2269 2270 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 2271 if (!cp) 2272 return; 2273 2274 hci_dev_lock(hdev); 2275 2276 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2277 2278 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); 2279 2280 if (status) { 2281 if (conn && conn->state == BT_CONNECT) { 2282 conn->state = BT_CLOSED; 2283 hci_connect_cfm(conn, status); 2284 hci_conn_del(conn); 2285 } 2286 } else { 2287 if (!conn) { 2288 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr, 2289 HCI_ROLE_MASTER); 2290 if (IS_ERR(conn)) 2291 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 2292 } 2293 } 2294 2295 hci_dev_unlock(hdev); 2296 } 2297 2298 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 2299 { 2300 struct hci_cp_add_sco *cp; 2301 struct hci_conn *acl; 2302 struct hci_link *link; 2303 __u16 handle; 2304 2305 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2306 2307 if (!status) 2308 return; 2309 2310 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 2311 if (!cp) 2312 return; 2313 2314 handle = __le16_to_cpu(cp->handle); 2315 2316 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2317 2318 hci_dev_lock(hdev); 2319 2320 acl = hci_conn_hash_lookup_handle(hdev, handle); 2321 if (acl) { 2322 link = list_first_entry_or_null(&acl->link_list, 2323 struct hci_link, list); 2324 if (link && link->conn) { 2325 link->conn->state = BT_CLOSED; 2326 2327 hci_connect_cfm(link->conn, status); 2328 hci_conn_del(link->conn); 2329 } 2330 } 2331 2332 hci_dev_unlock(hdev); 2333 } 2334 2335 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 2336 { 2337 struct hci_cp_auth_requested *cp; 2338 struct hci_conn *conn; 2339 2340 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2341 2342 if (!status) 2343 return; 2344 2345 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 2346 if (!cp) 2347 return; 2348 2349 hci_dev_lock(hdev); 2350 2351 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2352 if (conn) { 2353 if (conn->state == BT_CONFIG) { 2354 hci_connect_cfm(conn, status); 2355 hci_conn_drop(conn); 2356 } 2357 } 2358 2359 hci_dev_unlock(hdev); 2360 } 2361 2362 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 2363 { 2364 struct hci_cp_set_conn_encrypt *cp; 2365 struct hci_conn *conn; 2366 2367 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2368 2369 if (!status) 2370 return; 2371 2372 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 2373 if (!cp) 2374 return; 2375 2376 hci_dev_lock(hdev); 2377 2378 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2379 if (conn) { 2380 if (conn->state == BT_CONFIG) { 2381 hci_connect_cfm(conn, status); 2382 hci_conn_drop(conn); 2383 } 2384 } 2385 2386 hci_dev_unlock(hdev); 2387 } 2388 2389 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 2390 struct hci_conn *conn) 2391 { 2392 if (conn->state != BT_CONFIG || !conn->out) 2393 return 0; 2394 2395 if (conn->pending_sec_level == BT_SECURITY_SDP) 2396 return 0; 2397 2398 /* Only request authentication for SSP connections or non-SSP 2399 * devices with sec_level MEDIUM or HIGH or if MITM protection 2400 * is requested. 2401 */ 2402 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 2403 conn->pending_sec_level != BT_SECURITY_FIPS && 2404 conn->pending_sec_level != BT_SECURITY_HIGH && 2405 conn->pending_sec_level != BT_SECURITY_MEDIUM) 2406 return 0; 2407 2408 return 1; 2409 } 2410 2411 static int hci_resolve_name(struct hci_dev *hdev, 2412 struct inquiry_entry *e) 2413 { 2414 struct hci_cp_remote_name_req cp; 2415 2416 memset(&cp, 0, sizeof(cp)); 2417 2418 bacpy(&cp.bdaddr, &e->data.bdaddr); 2419 cp.pscan_rep_mode = e->data.pscan_rep_mode; 2420 cp.pscan_mode = e->data.pscan_mode; 2421 cp.clock_offset = e->data.clock_offset; 2422 2423 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 2424 } 2425 2426 static bool hci_resolve_next_name(struct hci_dev *hdev) 2427 { 2428 struct discovery_state *discov = &hdev->discovery; 2429 struct inquiry_entry *e; 2430 2431 if (list_empty(&discov->resolve)) 2432 return false; 2433 2434 /* We should stop if we already spent too much time resolving names. */ 2435 if (time_after(jiffies, discov->name_resolve_timeout)) { 2436 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); 2437 return false; 2438 } 2439 2440 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2441 if (!e) 2442 return false; 2443 2444 if (hci_resolve_name(hdev, e) == 0) { 2445 e->name_state = NAME_PENDING; 2446 return true; 2447 } 2448 2449 return false; 2450 } 2451 2452 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2453 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2454 { 2455 struct discovery_state *discov = &hdev->discovery; 2456 struct inquiry_entry *e; 2457 2458 /* Update the mgmt connected state if necessary. Be careful with 2459 * conn objects that exist but are not (yet) connected however. 2460 * Only those in BT_CONFIG or BT_CONNECTED states can be 2461 * considered connected. 2462 */ 2463 if (conn && (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) 2464 mgmt_device_connected(hdev, conn, name, name_len); 2465 2466 if (discov->state == DISCOVERY_STOPPED) 2467 return; 2468 2469 if (discov->state == DISCOVERY_STOPPING) 2470 goto discov_complete; 2471 2472 if (discov->state != DISCOVERY_RESOLVING) 2473 return; 2474 2475 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2476 /* If the device was not found in a list of found devices names of which 2477 * are pending. there is no need to continue resolving a next name as it 2478 * will be done upon receiving another Remote Name Request Complete 2479 * Event */ 2480 if (!e) 2481 return; 2482 2483 list_del(&e->list); 2484 2485 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; 2486 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, 2487 name, name_len); 2488 2489 if (hci_resolve_next_name(hdev)) 2490 return; 2491 2492 discov_complete: 2493 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2494 } 2495 2496 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2497 { 2498 struct hci_cp_remote_name_req *cp; 2499 struct hci_conn *conn; 2500 2501 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2502 2503 /* If successful wait for the name req complete event before 2504 * checking for the need to do authentication */ 2505 if (!status) 2506 return; 2507 2508 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2509 if (!cp) 2510 return; 2511 2512 hci_dev_lock(hdev); 2513 2514 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2515 2516 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2517 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2518 2519 if (!conn) 2520 goto unlock; 2521 2522 if (!hci_outgoing_auth_needed(hdev, conn)) 2523 goto unlock; 2524 2525 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2526 struct hci_cp_auth_requested auth_cp; 2527 2528 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2529 2530 auth_cp.handle = __cpu_to_le16(conn->handle); 2531 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2532 sizeof(auth_cp), &auth_cp); 2533 } 2534 2535 unlock: 2536 hci_dev_unlock(hdev); 2537 } 2538 2539 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2540 { 2541 struct hci_cp_read_remote_features *cp; 2542 struct hci_conn *conn; 2543 2544 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2545 2546 if (!status) 2547 return; 2548 2549 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2550 if (!cp) 2551 return; 2552 2553 hci_dev_lock(hdev); 2554 2555 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2556 if (conn) { 2557 if (conn->state == BT_CONFIG) { 2558 hci_connect_cfm(conn, status); 2559 hci_conn_drop(conn); 2560 } 2561 } 2562 2563 hci_dev_unlock(hdev); 2564 } 2565 2566 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2567 { 2568 struct hci_cp_read_remote_ext_features *cp; 2569 struct hci_conn *conn; 2570 2571 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2572 2573 if (!status) 2574 return; 2575 2576 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2577 if (!cp) 2578 return; 2579 2580 hci_dev_lock(hdev); 2581 2582 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2583 if (conn) { 2584 if (conn->state == BT_CONFIG) { 2585 hci_connect_cfm(conn, status); 2586 hci_conn_drop(conn); 2587 } 2588 } 2589 2590 hci_dev_unlock(hdev); 2591 } 2592 2593 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, 2594 __u8 status) 2595 { 2596 struct hci_conn *acl; 2597 struct hci_link *link; 2598 2599 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); 2600 2601 hci_dev_lock(hdev); 2602 2603 acl = hci_conn_hash_lookup_handle(hdev, handle); 2604 if (acl) { 2605 link = list_first_entry_or_null(&acl->link_list, 2606 struct hci_link, list); 2607 if (link && link->conn) { 2608 link->conn->state = BT_CLOSED; 2609 2610 hci_connect_cfm(link->conn, status); 2611 hci_conn_del(link->conn); 2612 } 2613 } 2614 2615 hci_dev_unlock(hdev); 2616 } 2617 2618 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2619 { 2620 struct hci_cp_setup_sync_conn *cp; 2621 2622 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2623 2624 if (!status) 2625 return; 2626 2627 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2628 if (!cp) 2629 return; 2630 2631 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2632 } 2633 2634 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2635 { 2636 struct hci_cp_enhanced_setup_sync_conn *cp; 2637 2638 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2639 2640 if (!status) 2641 return; 2642 2643 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); 2644 if (!cp) 2645 return; 2646 2647 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2648 } 2649 2650 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2651 { 2652 struct hci_cp_sniff_mode *cp; 2653 struct hci_conn *conn; 2654 2655 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2656 2657 if (!status) 2658 return; 2659 2660 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2661 if (!cp) 2662 return; 2663 2664 hci_dev_lock(hdev); 2665 2666 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2667 if (conn) { 2668 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2669 2670 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2671 hci_sco_setup(conn, status); 2672 } 2673 2674 hci_dev_unlock(hdev); 2675 } 2676 2677 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2678 { 2679 struct hci_cp_exit_sniff_mode *cp; 2680 struct hci_conn *conn; 2681 2682 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2683 2684 if (!status) 2685 return; 2686 2687 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2688 if (!cp) 2689 return; 2690 2691 hci_dev_lock(hdev); 2692 2693 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2694 if (conn) { 2695 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2696 2697 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2698 hci_sco_setup(conn, status); 2699 } 2700 2701 hci_dev_unlock(hdev); 2702 } 2703 2704 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2705 { 2706 struct hci_cp_disconnect *cp; 2707 struct hci_conn_params *params; 2708 struct hci_conn *conn; 2709 bool mgmt_conn; 2710 2711 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2712 2713 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended 2714 * otherwise cleanup the connection immediately. 2715 */ 2716 if (!status && !hdev->suspended) 2717 return; 2718 2719 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2720 if (!cp) 2721 return; 2722 2723 hci_dev_lock(hdev); 2724 2725 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2726 if (!conn) 2727 goto unlock; 2728 2729 if (status) { 2730 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2731 conn->dst_type, status); 2732 2733 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 2734 hdev->cur_adv_instance = conn->adv_instance; 2735 hci_enable_advertising(hdev); 2736 } 2737 2738 /* Inform sockets conn is gone before we delete it */ 2739 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED); 2740 2741 goto done; 2742 } 2743 2744 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2745 2746 if (conn->type == ACL_LINK) { 2747 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2748 hci_remove_link_key(hdev, &conn->dst); 2749 } 2750 2751 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2752 if (params) { 2753 switch (params->auto_connect) { 2754 case HCI_AUTO_CONN_LINK_LOSS: 2755 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2756 break; 2757 fallthrough; 2758 2759 case HCI_AUTO_CONN_DIRECT: 2760 case HCI_AUTO_CONN_ALWAYS: 2761 hci_pend_le_list_del_init(params); 2762 hci_pend_le_list_add(params, &hdev->pend_le_conns); 2763 break; 2764 2765 default: 2766 break; 2767 } 2768 } 2769 2770 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2771 cp->reason, mgmt_conn); 2772 2773 hci_disconn_cfm(conn, cp->reason); 2774 2775 done: 2776 /* If the disconnection failed for any reason, the upper layer 2777 * does not retry to disconnect in current implementation. 2778 * Hence, we need to do some basic cleanup here and re-enable 2779 * advertising if necessary. 2780 */ 2781 hci_conn_del(conn); 2782 unlock: 2783 hci_dev_unlock(hdev); 2784 } 2785 2786 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2787 { 2788 /* When using controller based address resolution, then the new 2789 * address types 0x02 and 0x03 are used. These types need to be 2790 * converted back into either public address or random address type 2791 */ 2792 switch (type) { 2793 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2794 if (resolved) 2795 *resolved = true; 2796 return ADDR_LE_DEV_PUBLIC; 2797 case ADDR_LE_DEV_RANDOM_RESOLVED: 2798 if (resolved) 2799 *resolved = true; 2800 return ADDR_LE_DEV_RANDOM; 2801 } 2802 2803 if (resolved) 2804 *resolved = false; 2805 return type; 2806 } 2807 2808 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2809 u8 peer_addr_type, u8 own_address_type, 2810 u8 filter_policy) 2811 { 2812 struct hci_conn *conn; 2813 2814 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2815 peer_addr_type); 2816 if (!conn) 2817 return; 2818 2819 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2820 2821 /* Store the initiator and responder address information which 2822 * is needed for SMP. These values will not change during the 2823 * lifetime of the connection. 2824 */ 2825 conn->init_addr_type = own_address_type; 2826 if (own_address_type == ADDR_LE_DEV_RANDOM) 2827 bacpy(&conn->init_addr, &hdev->random_addr); 2828 else 2829 bacpy(&conn->init_addr, &hdev->bdaddr); 2830 2831 conn->resp_addr_type = peer_addr_type; 2832 bacpy(&conn->resp_addr, peer_addr); 2833 } 2834 2835 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2836 { 2837 struct hci_cp_le_create_conn *cp; 2838 2839 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2840 2841 /* All connection failure handling is taken care of by the 2842 * hci_conn_failed function which is triggered by the HCI 2843 * request completion callbacks used for connecting. 2844 */ 2845 if (status) 2846 return; 2847 2848 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2849 if (!cp) 2850 return; 2851 2852 hci_dev_lock(hdev); 2853 2854 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2855 cp->own_address_type, cp->filter_policy); 2856 2857 hci_dev_unlock(hdev); 2858 } 2859 2860 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2861 { 2862 struct hci_cp_le_ext_create_conn *cp; 2863 2864 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2865 2866 /* All connection failure handling is taken care of by the 2867 * hci_conn_failed function which is triggered by the HCI 2868 * request completion callbacks used for connecting. 2869 */ 2870 if (status) 2871 return; 2872 2873 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2874 if (!cp) 2875 return; 2876 2877 hci_dev_lock(hdev); 2878 2879 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2880 cp->own_addr_type, cp->filter_policy); 2881 2882 hci_dev_unlock(hdev); 2883 } 2884 2885 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2886 { 2887 struct hci_cp_le_read_remote_features *cp; 2888 struct hci_conn *conn; 2889 2890 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2891 2892 if (!status) 2893 return; 2894 2895 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2896 if (!cp) 2897 return; 2898 2899 hci_dev_lock(hdev); 2900 2901 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2902 if (conn) { 2903 if (conn->state == BT_CONFIG) { 2904 hci_connect_cfm(conn, status); 2905 hci_conn_drop(conn); 2906 } 2907 } 2908 2909 hci_dev_unlock(hdev); 2910 } 2911 2912 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2913 { 2914 struct hci_cp_le_start_enc *cp; 2915 struct hci_conn *conn; 2916 2917 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2918 2919 if (!status) 2920 return; 2921 2922 hci_dev_lock(hdev); 2923 2924 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2925 if (!cp) 2926 goto unlock; 2927 2928 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2929 if (!conn) 2930 goto unlock; 2931 2932 if (conn->state != BT_CONNECTED) 2933 goto unlock; 2934 2935 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2936 hci_conn_drop(conn); 2937 2938 unlock: 2939 hci_dev_unlock(hdev); 2940 } 2941 2942 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2943 { 2944 struct hci_cp_switch_role *cp; 2945 struct hci_conn *conn; 2946 2947 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2948 2949 if (!status) 2950 return; 2951 2952 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 2953 if (!cp) 2954 return; 2955 2956 hci_dev_lock(hdev); 2957 2958 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2959 if (conn) 2960 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 2961 2962 hci_dev_unlock(hdev); 2963 } 2964 2965 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 2966 struct sk_buff *skb) 2967 { 2968 struct hci_ev_status *ev = data; 2969 struct discovery_state *discov = &hdev->discovery; 2970 struct inquiry_entry *e; 2971 2972 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 2973 2974 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 2975 return; 2976 2977 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 2978 wake_up_bit(&hdev->flags, HCI_INQUIRY); 2979 2980 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 2981 return; 2982 2983 hci_dev_lock(hdev); 2984 2985 if (discov->state != DISCOVERY_FINDING) 2986 goto unlock; 2987 2988 if (list_empty(&discov->resolve)) { 2989 /* When BR/EDR inquiry is active and no LE scanning is in 2990 * progress, then change discovery state to indicate completion. 2991 * 2992 * When running LE scanning and BR/EDR inquiry simultaneously 2993 * and the LE scan already finished, then change the discovery 2994 * state to indicate completion. 2995 */ 2996 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 2997 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 2998 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2999 goto unlock; 3000 } 3001 3002 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 3003 if (e && hci_resolve_name(hdev, e) == 0) { 3004 e->name_state = NAME_PENDING; 3005 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 3006 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 3007 } else { 3008 /* When BR/EDR inquiry is active and no LE scanning is in 3009 * progress, then change discovery state to indicate completion. 3010 * 3011 * When running LE scanning and BR/EDR inquiry simultaneously 3012 * and the LE scan already finished, then change the discovery 3013 * state to indicate completion. 3014 */ 3015 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3016 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3017 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3018 } 3019 3020 unlock: 3021 hci_dev_unlock(hdev); 3022 } 3023 3024 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3025 struct sk_buff *skb) 3026 { 3027 struct hci_ev_inquiry_result *ev = edata; 3028 struct inquiry_data data; 3029 int i; 3030 3031 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3032 flex_array_size(ev, info, ev->num))) 3033 return; 3034 3035 bt_dev_dbg(hdev, "num %d", ev->num); 3036 3037 if (!ev->num) 3038 return; 3039 3040 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3041 return; 3042 3043 hci_dev_lock(hdev); 3044 3045 for (i = 0; i < ev->num; i++) { 3046 struct inquiry_info *info = &ev->info[i]; 3047 u32 flags; 3048 3049 bacpy(&data.bdaddr, &info->bdaddr); 3050 data.pscan_rep_mode = info->pscan_rep_mode; 3051 data.pscan_period_mode = info->pscan_period_mode; 3052 data.pscan_mode = info->pscan_mode; 3053 memcpy(data.dev_class, info->dev_class, 3); 3054 data.clock_offset = info->clock_offset; 3055 data.rssi = HCI_RSSI_INVALID; 3056 data.ssp_mode = 0x00; 3057 3058 flags = hci_inquiry_cache_update(hdev, &data, false); 3059 3060 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3061 info->dev_class, HCI_RSSI_INVALID, 3062 flags, NULL, 0, NULL, 0, 0); 3063 } 3064 3065 hci_dev_unlock(hdev); 3066 } 3067 3068 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3069 struct sk_buff *skb) 3070 { 3071 struct hci_ev_conn_complete *ev = data; 3072 struct hci_conn *conn; 3073 u8 status = ev->status; 3074 3075 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3076 3077 hci_dev_lock(hdev); 3078 3079 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3080 if (!conn) { 3081 /* In case of error status and there is no connection pending 3082 * just unlock as there is nothing to cleanup. 3083 */ 3084 if (ev->status) 3085 goto unlock; 3086 3087 /* Connection may not exist if auto-connected. Check the bredr 3088 * allowlist to see if this device is allowed to auto connect. 3089 * If link is an ACL type, create a connection class 3090 * automatically. 3091 * 3092 * Auto-connect will only occur if the event filter is 3093 * programmed with a given address. Right now, event filter is 3094 * only used during suspend. 3095 */ 3096 if (ev->link_type == ACL_LINK && 3097 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3098 &ev->bdaddr, 3099 BDADDR_BREDR)) { 3100 conn = hci_conn_add_unset(hdev, ev->link_type, 3101 &ev->bdaddr, HCI_ROLE_SLAVE); 3102 if (IS_ERR(conn)) { 3103 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3104 goto unlock; 3105 } 3106 } else { 3107 if (ev->link_type != SCO_LINK) 3108 goto unlock; 3109 3110 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3111 &ev->bdaddr); 3112 if (!conn) 3113 goto unlock; 3114 3115 conn->type = SCO_LINK; 3116 } 3117 } 3118 3119 /* The HCI_Connection_Complete event is only sent once per connection. 3120 * Processing it more than once per connection can corrupt kernel memory. 3121 * 3122 * As the connection handle is set here for the first time, it indicates 3123 * whether the connection is already set up. 3124 */ 3125 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 3126 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3127 goto unlock; 3128 } 3129 3130 if (!status) { 3131 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 3132 if (status) 3133 goto done; 3134 3135 if (conn->type == ACL_LINK) { 3136 conn->state = BT_CONFIG; 3137 hci_conn_hold(conn); 3138 3139 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3140 !hci_find_link_key(hdev, &ev->bdaddr)) 3141 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3142 else 3143 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3144 } else 3145 conn->state = BT_CONNECTED; 3146 3147 hci_debugfs_create_conn(conn); 3148 hci_conn_add_sysfs(conn); 3149 3150 if (test_bit(HCI_AUTH, &hdev->flags)) 3151 set_bit(HCI_CONN_AUTH, &conn->flags); 3152 3153 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3154 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3155 3156 /* "Link key request" completed ahead of "connect request" completes */ 3157 if (ev->encr_mode == 1 && !test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3158 ev->link_type == ACL_LINK) { 3159 struct link_key *key; 3160 struct hci_cp_read_enc_key_size cp; 3161 3162 key = hci_find_link_key(hdev, &ev->bdaddr); 3163 if (key) { 3164 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3165 3166 if (!read_key_size_capable(hdev)) { 3167 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3168 } else { 3169 cp.handle = cpu_to_le16(conn->handle); 3170 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3171 sizeof(cp), &cp)) { 3172 bt_dev_err(hdev, "sending read key size failed"); 3173 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3174 } 3175 } 3176 3177 hci_encrypt_cfm(conn, ev->status); 3178 } 3179 } 3180 3181 /* Get remote features */ 3182 if (conn->type == ACL_LINK) { 3183 struct hci_cp_read_remote_features cp; 3184 cp.handle = ev->handle; 3185 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3186 sizeof(cp), &cp); 3187 3188 hci_update_scan(hdev); 3189 } 3190 3191 /* Set packet type for incoming connection */ 3192 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3193 struct hci_cp_change_conn_ptype cp; 3194 cp.handle = ev->handle; 3195 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3196 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3197 &cp); 3198 } 3199 } 3200 3201 if (conn->type == ACL_LINK) 3202 hci_sco_setup(conn, ev->status); 3203 3204 done: 3205 if (status) { 3206 hci_conn_failed(conn, status); 3207 } else if (ev->link_type == SCO_LINK) { 3208 switch (conn->setting & SCO_AIRMODE_MASK) { 3209 case SCO_AIRMODE_CVSD: 3210 if (hdev->notify) 3211 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3212 break; 3213 } 3214 3215 hci_connect_cfm(conn, status); 3216 } 3217 3218 unlock: 3219 hci_dev_unlock(hdev); 3220 } 3221 3222 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3223 { 3224 struct hci_cp_reject_conn_req cp; 3225 3226 bacpy(&cp.bdaddr, bdaddr); 3227 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3228 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3229 } 3230 3231 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3232 struct sk_buff *skb) 3233 { 3234 struct hci_ev_conn_request *ev = data; 3235 int mask = hdev->link_mode; 3236 struct inquiry_entry *ie; 3237 struct hci_conn *conn; 3238 __u8 flags = 0; 3239 3240 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3241 3242 /* Reject incoming connection from device with same BD ADDR against 3243 * CVE-2020-26555 3244 */ 3245 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { 3246 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", 3247 &ev->bdaddr); 3248 hci_reject_conn(hdev, &ev->bdaddr); 3249 return; 3250 } 3251 3252 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3253 &flags); 3254 3255 if (!(mask & HCI_LM_ACCEPT)) { 3256 hci_reject_conn(hdev, &ev->bdaddr); 3257 return; 3258 } 3259 3260 hci_dev_lock(hdev); 3261 3262 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3263 BDADDR_BREDR)) { 3264 hci_reject_conn(hdev, &ev->bdaddr); 3265 goto unlock; 3266 } 3267 3268 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3269 * connection. These features are only touched through mgmt so 3270 * only do the checks if HCI_MGMT is set. 3271 */ 3272 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3273 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3274 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3275 BDADDR_BREDR)) { 3276 hci_reject_conn(hdev, &ev->bdaddr); 3277 goto unlock; 3278 } 3279 3280 /* Connection accepted */ 3281 3282 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3283 if (ie) 3284 memcpy(ie->data.dev_class, ev->dev_class, 3); 3285 3286 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3287 &ev->bdaddr); 3288 if (!conn) { 3289 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, 3290 HCI_ROLE_SLAVE); 3291 if (IS_ERR(conn)) { 3292 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 3293 goto unlock; 3294 } 3295 } 3296 3297 memcpy(conn->dev_class, ev->dev_class, 3); 3298 3299 hci_dev_unlock(hdev); 3300 3301 if (ev->link_type == ACL_LINK || 3302 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3303 struct hci_cp_accept_conn_req cp; 3304 conn->state = BT_CONNECT; 3305 3306 bacpy(&cp.bdaddr, &ev->bdaddr); 3307 3308 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3309 cp.role = 0x00; /* Become central */ 3310 else 3311 cp.role = 0x01; /* Remain peripheral */ 3312 3313 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3314 } else if (!(flags & HCI_PROTO_DEFER)) { 3315 struct hci_cp_accept_sync_conn_req cp; 3316 conn->state = BT_CONNECT; 3317 3318 bacpy(&cp.bdaddr, &ev->bdaddr); 3319 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3320 3321 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3322 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3323 cp.max_latency = cpu_to_le16(0xffff); 3324 cp.content_format = cpu_to_le16(hdev->voice_setting); 3325 cp.retrans_effort = 0xff; 3326 3327 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3328 &cp); 3329 } else { 3330 conn->state = BT_CONNECT2; 3331 hci_connect_cfm(conn, 0); 3332 } 3333 3334 return; 3335 unlock: 3336 hci_dev_unlock(hdev); 3337 } 3338 3339 static u8 hci_to_mgmt_reason(u8 err) 3340 { 3341 switch (err) { 3342 case HCI_ERROR_CONNECTION_TIMEOUT: 3343 return MGMT_DEV_DISCONN_TIMEOUT; 3344 case HCI_ERROR_REMOTE_USER_TERM: 3345 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3346 case HCI_ERROR_REMOTE_POWER_OFF: 3347 return MGMT_DEV_DISCONN_REMOTE; 3348 case HCI_ERROR_LOCAL_HOST_TERM: 3349 return MGMT_DEV_DISCONN_LOCAL_HOST; 3350 default: 3351 return MGMT_DEV_DISCONN_UNKNOWN; 3352 } 3353 } 3354 3355 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3356 struct sk_buff *skb) 3357 { 3358 struct hci_ev_disconn_complete *ev = data; 3359 u8 reason; 3360 struct hci_conn_params *params; 3361 struct hci_conn *conn; 3362 bool mgmt_connected; 3363 3364 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3365 3366 hci_dev_lock(hdev); 3367 3368 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3369 if (!conn) 3370 goto unlock; 3371 3372 if (ev->status) { 3373 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3374 conn->dst_type, ev->status); 3375 goto unlock; 3376 } 3377 3378 conn->state = BT_CLOSED; 3379 3380 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3381 3382 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3383 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3384 else 3385 reason = hci_to_mgmt_reason(ev->reason); 3386 3387 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3388 reason, mgmt_connected); 3389 3390 if (conn->type == ACL_LINK) { 3391 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3392 hci_remove_link_key(hdev, &conn->dst); 3393 3394 hci_update_scan(hdev); 3395 } 3396 3397 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 3398 if (params) { 3399 switch (params->auto_connect) { 3400 case HCI_AUTO_CONN_LINK_LOSS: 3401 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3402 break; 3403 fallthrough; 3404 3405 case HCI_AUTO_CONN_DIRECT: 3406 case HCI_AUTO_CONN_ALWAYS: 3407 hci_pend_le_list_del_init(params); 3408 hci_pend_le_list_add(params, &hdev->pend_le_conns); 3409 hci_update_passive_scan(hdev); 3410 break; 3411 3412 default: 3413 break; 3414 } 3415 } 3416 3417 hci_disconn_cfm(conn, ev->reason); 3418 3419 /* Re-enable advertising if necessary, since it might 3420 * have been disabled by the connection. From the 3421 * HCI_LE_Set_Advertise_Enable command description in 3422 * the core specification (v4.0): 3423 * "The Controller shall continue advertising until the Host 3424 * issues an LE_Set_Advertise_Enable command with 3425 * Advertising_Enable set to 0x00 (Advertising is disabled) 3426 * or until a connection is created or until the Advertising 3427 * is timed out due to Directed Advertising." 3428 */ 3429 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3430 hdev->cur_adv_instance = conn->adv_instance; 3431 hci_enable_advertising(hdev); 3432 } 3433 3434 hci_conn_del(conn); 3435 3436 unlock: 3437 hci_dev_unlock(hdev); 3438 } 3439 3440 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3441 struct sk_buff *skb) 3442 { 3443 struct hci_ev_auth_complete *ev = data; 3444 struct hci_conn *conn; 3445 3446 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3447 3448 hci_dev_lock(hdev); 3449 3450 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3451 if (!conn) 3452 goto unlock; 3453 3454 if (!ev->status) { 3455 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3456 set_bit(HCI_CONN_AUTH, &conn->flags); 3457 conn->sec_level = conn->pending_sec_level; 3458 } else { 3459 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3460 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3461 3462 mgmt_auth_failed(conn, ev->status); 3463 } 3464 3465 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3466 3467 if (conn->state == BT_CONFIG) { 3468 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3469 struct hci_cp_set_conn_encrypt cp; 3470 cp.handle = ev->handle; 3471 cp.encrypt = 0x01; 3472 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3473 &cp); 3474 } else { 3475 conn->state = BT_CONNECTED; 3476 hci_connect_cfm(conn, ev->status); 3477 hci_conn_drop(conn); 3478 } 3479 } else { 3480 hci_auth_cfm(conn, ev->status); 3481 3482 hci_conn_hold(conn); 3483 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3484 hci_conn_drop(conn); 3485 } 3486 3487 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3488 if (!ev->status) { 3489 struct hci_cp_set_conn_encrypt cp; 3490 cp.handle = ev->handle; 3491 cp.encrypt = 0x01; 3492 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3493 &cp); 3494 } else { 3495 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3496 hci_encrypt_cfm(conn, ev->status); 3497 } 3498 } 3499 3500 unlock: 3501 hci_dev_unlock(hdev); 3502 } 3503 3504 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3505 struct sk_buff *skb) 3506 { 3507 struct hci_ev_remote_name *ev = data; 3508 struct hci_conn *conn; 3509 3510 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3511 3512 hci_dev_lock(hdev); 3513 3514 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3515 3516 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3517 goto check_auth; 3518 3519 if (ev->status == 0) 3520 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3521 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3522 else 3523 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3524 3525 check_auth: 3526 if (!conn) 3527 goto unlock; 3528 3529 if (!hci_outgoing_auth_needed(hdev, conn)) 3530 goto unlock; 3531 3532 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3533 struct hci_cp_auth_requested cp; 3534 3535 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3536 3537 cp.handle = __cpu_to_le16(conn->handle); 3538 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3539 } 3540 3541 unlock: 3542 hci_dev_unlock(hdev); 3543 } 3544 3545 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3546 struct sk_buff *skb) 3547 { 3548 struct hci_ev_encrypt_change *ev = data; 3549 struct hci_conn *conn; 3550 3551 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3552 3553 hci_dev_lock(hdev); 3554 3555 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3556 if (!conn) 3557 goto unlock; 3558 3559 if (!ev->status) { 3560 if (ev->encrypt) { 3561 /* Encryption implies authentication */ 3562 set_bit(HCI_CONN_AUTH, &conn->flags); 3563 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3564 conn->sec_level = conn->pending_sec_level; 3565 3566 /* P-256 authentication key implies FIPS */ 3567 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3568 set_bit(HCI_CONN_FIPS, &conn->flags); 3569 3570 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3571 conn->type == LE_LINK) 3572 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3573 } else { 3574 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3575 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3576 } 3577 } 3578 3579 /* We should disregard the current RPA and generate a new one 3580 * whenever the encryption procedure fails. 3581 */ 3582 if (ev->status && conn->type == LE_LINK) { 3583 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3584 hci_adv_instances_set_rpa_expired(hdev, true); 3585 } 3586 3587 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3588 3589 /* Check link security requirements are met */ 3590 if (!hci_conn_check_link_mode(conn)) 3591 ev->status = HCI_ERROR_AUTH_FAILURE; 3592 3593 if (ev->status && conn->state == BT_CONNECTED) { 3594 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3595 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3596 3597 /* Notify upper layers so they can cleanup before 3598 * disconnecting. 3599 */ 3600 hci_encrypt_cfm(conn, ev->status); 3601 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3602 hci_conn_drop(conn); 3603 goto unlock; 3604 } 3605 3606 /* Try reading the encryption key size for encrypted ACL links */ 3607 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3608 struct hci_cp_read_enc_key_size cp; 3609 3610 /* Only send HCI_Read_Encryption_Key_Size if the 3611 * controller really supports it. If it doesn't, assume 3612 * the default size (16). 3613 */ 3614 if (!read_key_size_capable(hdev)) { 3615 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3616 goto notify; 3617 } 3618 3619 cp.handle = cpu_to_le16(conn->handle); 3620 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3621 sizeof(cp), &cp)) { 3622 bt_dev_err(hdev, "sending read key size failed"); 3623 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3624 goto notify; 3625 } 3626 3627 goto unlock; 3628 } 3629 3630 /* Set the default Authenticated Payload Timeout after 3631 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3632 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3633 * sent when the link is active and Encryption is enabled, the conn 3634 * type can be either LE or ACL and controller must support LMP Ping. 3635 * Ensure for AES-CCM encryption as well. 3636 */ 3637 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3638 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3639 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3640 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3641 struct hci_cp_write_auth_payload_to cp; 3642 3643 cp.handle = cpu_to_le16(conn->handle); 3644 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3645 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3646 sizeof(cp), &cp)) 3647 bt_dev_err(hdev, "write auth payload timeout failed"); 3648 } 3649 3650 notify: 3651 hci_encrypt_cfm(conn, ev->status); 3652 3653 unlock: 3654 hci_dev_unlock(hdev); 3655 } 3656 3657 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3658 struct sk_buff *skb) 3659 { 3660 struct hci_ev_change_link_key_complete *ev = data; 3661 struct hci_conn *conn; 3662 3663 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3664 3665 hci_dev_lock(hdev); 3666 3667 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3668 if (conn) { 3669 if (!ev->status) 3670 set_bit(HCI_CONN_SECURE, &conn->flags); 3671 3672 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3673 3674 hci_key_change_cfm(conn, ev->status); 3675 } 3676 3677 hci_dev_unlock(hdev); 3678 } 3679 3680 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3681 struct sk_buff *skb) 3682 { 3683 struct hci_ev_remote_features *ev = data; 3684 struct hci_conn *conn; 3685 3686 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3687 3688 hci_dev_lock(hdev); 3689 3690 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3691 if (!conn) 3692 goto unlock; 3693 3694 if (!ev->status) 3695 memcpy(conn->features[0], ev->features, 8); 3696 3697 if (conn->state != BT_CONFIG) 3698 goto unlock; 3699 3700 if (!ev->status && lmp_ext_feat_capable(hdev) && 3701 lmp_ext_feat_capable(conn)) { 3702 struct hci_cp_read_remote_ext_features cp; 3703 cp.handle = ev->handle; 3704 cp.page = 0x01; 3705 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3706 sizeof(cp), &cp); 3707 goto unlock; 3708 } 3709 3710 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 3711 struct hci_cp_remote_name_req cp; 3712 memset(&cp, 0, sizeof(cp)); 3713 bacpy(&cp.bdaddr, &conn->dst); 3714 cp.pscan_rep_mode = 0x02; 3715 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3716 } else { 3717 mgmt_device_connected(hdev, conn, NULL, 0); 3718 } 3719 3720 if (!hci_outgoing_auth_needed(hdev, conn)) { 3721 conn->state = BT_CONNECTED; 3722 hci_connect_cfm(conn, ev->status); 3723 hci_conn_drop(conn); 3724 } 3725 3726 unlock: 3727 hci_dev_unlock(hdev); 3728 } 3729 3730 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3731 { 3732 cancel_delayed_work(&hdev->cmd_timer); 3733 3734 rcu_read_lock(); 3735 if (!test_bit(HCI_RESET, &hdev->flags)) { 3736 if (ncmd) { 3737 cancel_delayed_work(&hdev->ncmd_timer); 3738 atomic_set(&hdev->cmd_cnt, 1); 3739 } else { 3740 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3741 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3742 HCI_NCMD_TIMEOUT); 3743 } 3744 } 3745 rcu_read_unlock(); 3746 } 3747 3748 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3749 struct sk_buff *skb) 3750 { 3751 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3752 3753 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3754 3755 if (rp->status) 3756 return rp->status; 3757 3758 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3759 hdev->le_pkts = rp->acl_max_pkt; 3760 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3761 hdev->iso_pkts = rp->iso_max_pkt; 3762 3763 hdev->le_cnt = hdev->le_pkts; 3764 hdev->iso_cnt = hdev->iso_pkts; 3765 3766 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3767 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3768 3769 if (hdev->le_mtu && hdev->le_mtu < HCI_MIN_LE_MTU) 3770 return HCI_ERROR_INVALID_PARAMETERS; 3771 3772 return rp->status; 3773 } 3774 3775 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3776 { 3777 struct hci_conn *conn, *tmp; 3778 3779 lockdep_assert_held(&hdev->lock); 3780 3781 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3782 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) || 3783 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3784 continue; 3785 3786 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3787 hci_conn_failed(conn, status); 3788 } 3789 } 3790 3791 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3792 struct sk_buff *skb) 3793 { 3794 struct hci_rp_le_set_cig_params *rp = data; 3795 struct hci_cp_le_set_cig_params *cp; 3796 struct hci_conn *conn; 3797 u8 status = rp->status; 3798 bool pending = false; 3799 int i; 3800 3801 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3802 3803 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3804 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3805 rp->cig_id != cp->cig_id)) { 3806 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3807 status = HCI_ERROR_UNSPECIFIED; 3808 } 3809 3810 hci_dev_lock(hdev); 3811 3812 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3813 * 3814 * If the Status return parameter is non-zero, then the state of the CIG 3815 * and its CIS configurations shall not be changed by the command. If 3816 * the CIG did not already exist, it shall not be created. 3817 */ 3818 if (status) { 3819 /* Keep current configuration, fail only the unbound CIS */ 3820 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3821 goto unlock; 3822 } 3823 3824 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3825 * 3826 * If the Status return parameter is zero, then the Controller shall 3827 * set the Connection_Handle arrayed return parameter to the connection 3828 * handle(s) corresponding to the CIS configurations specified in 3829 * the CIS_IDs command parameter, in the same order. 3830 */ 3831 for (i = 0; i < rp->num_handles; ++i) { 3832 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3833 cp->cis[i].cis_id); 3834 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3835 continue; 3836 3837 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3838 continue; 3839 3840 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3841 continue; 3842 3843 if (conn->state == BT_CONNECT) 3844 pending = true; 3845 } 3846 3847 unlock: 3848 if (pending) 3849 hci_le_create_cis_pending(hdev); 3850 3851 hci_dev_unlock(hdev); 3852 3853 return rp->status; 3854 } 3855 3856 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3857 struct sk_buff *skb) 3858 { 3859 struct hci_rp_le_setup_iso_path *rp = data; 3860 struct hci_cp_le_setup_iso_path *cp; 3861 struct hci_conn *conn; 3862 3863 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3864 3865 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3866 if (!cp) 3867 return rp->status; 3868 3869 hci_dev_lock(hdev); 3870 3871 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3872 if (!conn) 3873 goto unlock; 3874 3875 if (rp->status) { 3876 hci_connect_cfm(conn, rp->status); 3877 hci_conn_del(conn); 3878 goto unlock; 3879 } 3880 3881 switch (cp->direction) { 3882 /* Input (Host to Controller) */ 3883 case 0x00: 3884 /* Only confirm connection if output only */ 3885 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3886 hci_connect_cfm(conn, rp->status); 3887 break; 3888 /* Output (Controller to Host) */ 3889 case 0x01: 3890 /* Confirm connection since conn->iso_qos is always configured 3891 * last. 3892 */ 3893 hci_connect_cfm(conn, rp->status); 3894 3895 /* Notify device connected in case it is a BIG Sync */ 3896 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) 3897 mgmt_device_connected(hdev, conn, NULL, 0); 3898 3899 break; 3900 } 3901 3902 unlock: 3903 hci_dev_unlock(hdev); 3904 return rp->status; 3905 } 3906 3907 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3908 { 3909 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3910 } 3911 3912 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3913 struct sk_buff *skb) 3914 { 3915 struct hci_ev_status *rp = data; 3916 struct hci_cp_le_set_per_adv_params *cp; 3917 3918 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3919 3920 if (rp->status) 3921 return rp->status; 3922 3923 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3924 if (!cp) 3925 return rp->status; 3926 3927 /* TODO: set the conn state */ 3928 return rp->status; 3929 } 3930 3931 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3932 struct sk_buff *skb) 3933 { 3934 struct hci_ev_status *rp = data; 3935 struct hci_cp_le_set_per_adv_enable *cp; 3936 struct adv_info *adv = NULL, *n; 3937 u8 per_adv_cnt = 0; 3938 3939 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3940 3941 if (rp->status) 3942 return rp->status; 3943 3944 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3945 if (!cp) 3946 return rp->status; 3947 3948 hci_dev_lock(hdev); 3949 3950 adv = hci_find_adv_instance(hdev, cp->handle); 3951 3952 if (cp->enable) { 3953 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3954 3955 if (adv) 3956 adv->enabled = true; 3957 } else { 3958 /* If just one instance was disabled check if there are 3959 * any other instance enabled before clearing HCI_LE_PER_ADV. 3960 * The current periodic adv instance will be marked as 3961 * disabled once extended advertising is also disabled. 3962 */ 3963 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 3964 list) { 3965 if (adv->periodic && adv->enabled) 3966 per_adv_cnt++; 3967 } 3968 3969 if (per_adv_cnt > 1) 3970 goto unlock; 3971 3972 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3973 } 3974 3975 unlock: 3976 hci_dev_unlock(hdev); 3977 3978 return rp->status; 3979 } 3980 3981 #define HCI_CC_VL(_op, _func, _min, _max) \ 3982 { \ 3983 .op = _op, \ 3984 .func = _func, \ 3985 .min_len = _min, \ 3986 .max_len = _max, \ 3987 } 3988 3989 #define HCI_CC(_op, _func, _len) \ 3990 HCI_CC_VL(_op, _func, _len, _len) 3991 3992 #define HCI_CC_STATUS(_op, _func) \ 3993 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 3994 3995 static const struct hci_cc { 3996 u16 op; 3997 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 3998 u16 min_len; 3999 u16 max_len; 4000 } hci_cc_table[] = { 4001 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 4002 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 4003 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 4004 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 4005 hci_cc_remote_name_req_cancel), 4006 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 4007 sizeof(struct hci_rp_role_discovery)), 4008 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 4009 sizeof(struct hci_rp_read_link_policy)), 4010 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4011 sizeof(struct hci_rp_write_link_policy)), 4012 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4013 sizeof(struct hci_rp_read_def_link_policy)), 4014 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4015 hci_cc_write_def_link_policy), 4016 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4017 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4018 sizeof(struct hci_rp_read_stored_link_key)), 4019 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4020 sizeof(struct hci_rp_delete_stored_link_key)), 4021 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4022 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4023 sizeof(struct hci_rp_read_local_name)), 4024 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4025 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4026 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4027 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4028 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4029 sizeof(struct hci_rp_read_class_of_dev)), 4030 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4031 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4032 sizeof(struct hci_rp_read_voice_setting)), 4033 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4034 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4035 sizeof(struct hci_rp_read_num_supported_iac)), 4036 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4037 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4038 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4039 sizeof(struct hci_rp_read_auth_payload_to)), 4040 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4041 sizeof(struct hci_rp_write_auth_payload_to)), 4042 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4043 sizeof(struct hci_rp_read_local_version)), 4044 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4045 sizeof(struct hci_rp_read_local_commands)), 4046 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4047 sizeof(struct hci_rp_read_local_features)), 4048 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4049 sizeof(struct hci_rp_read_local_ext_features)), 4050 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4051 sizeof(struct hci_rp_read_buffer_size)), 4052 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4053 sizeof(struct hci_rp_read_bd_addr)), 4054 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4055 sizeof(struct hci_rp_read_local_pairing_opts)), 4056 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4057 sizeof(struct hci_rp_read_page_scan_activity)), 4058 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4059 hci_cc_write_page_scan_activity), 4060 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4061 sizeof(struct hci_rp_read_page_scan_type)), 4062 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4063 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4064 sizeof(struct hci_rp_read_clock)), 4065 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4066 sizeof(struct hci_rp_read_enc_key_size)), 4067 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4068 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4069 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4070 hci_cc_read_def_err_data_reporting, 4071 sizeof(struct hci_rp_read_def_err_data_reporting)), 4072 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4073 hci_cc_write_def_err_data_reporting), 4074 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4075 sizeof(struct hci_rp_pin_code_reply)), 4076 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4077 sizeof(struct hci_rp_pin_code_neg_reply)), 4078 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4079 sizeof(struct hci_rp_read_local_oob_data)), 4080 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4081 sizeof(struct hci_rp_read_local_oob_ext_data)), 4082 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4083 sizeof(struct hci_rp_le_read_buffer_size)), 4084 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4085 sizeof(struct hci_rp_le_read_local_features)), 4086 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4087 sizeof(struct hci_rp_le_read_adv_tx_power)), 4088 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4089 sizeof(struct hci_rp_user_confirm_reply)), 4090 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4091 sizeof(struct hci_rp_user_confirm_reply)), 4092 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4093 sizeof(struct hci_rp_user_confirm_reply)), 4094 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4095 sizeof(struct hci_rp_user_confirm_reply)), 4096 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4097 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4098 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4099 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4100 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4101 hci_cc_le_read_accept_list_size, 4102 sizeof(struct hci_rp_le_read_accept_list_size)), 4103 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4104 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4105 hci_cc_le_add_to_accept_list), 4106 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4107 hci_cc_le_del_from_accept_list), 4108 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4109 sizeof(struct hci_rp_le_read_supported_states)), 4110 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4111 sizeof(struct hci_rp_le_read_def_data_len)), 4112 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4113 hci_cc_le_write_def_data_len), 4114 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4115 hci_cc_le_add_to_resolv_list), 4116 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4117 hci_cc_le_del_from_resolv_list), 4118 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4119 hci_cc_le_clear_resolv_list), 4120 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4121 sizeof(struct hci_rp_le_read_resolv_list_size)), 4122 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4123 hci_cc_le_set_addr_resolution_enable), 4124 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4125 sizeof(struct hci_rp_le_read_max_data_len)), 4126 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4127 hci_cc_write_le_host_supported), 4128 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4129 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4130 sizeof(struct hci_rp_read_rssi)), 4131 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4132 sizeof(struct hci_rp_read_tx_power)), 4133 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4134 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4135 hci_cc_le_set_ext_scan_param), 4136 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4137 hci_cc_le_set_ext_scan_enable), 4138 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4139 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4140 hci_cc_le_read_num_adv_sets, 4141 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4142 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4143 sizeof(struct hci_rp_le_set_ext_adv_params)), 4144 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4145 hci_cc_le_set_ext_adv_enable), 4146 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4147 hci_cc_le_set_adv_set_random_addr), 4148 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4149 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4150 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4151 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4152 hci_cc_le_set_per_adv_enable), 4153 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4154 sizeof(struct hci_rp_le_read_transmit_power)), 4155 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4156 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4157 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4158 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4159 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4160 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4161 sizeof(struct hci_rp_le_setup_iso_path)), 4162 }; 4163 4164 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4165 struct sk_buff *skb) 4166 { 4167 void *data; 4168 4169 if (skb->len < cc->min_len) { 4170 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4171 cc->op, skb->len, cc->min_len); 4172 return HCI_ERROR_UNSPECIFIED; 4173 } 4174 4175 /* Just warn if the length is over max_len size it still be possible to 4176 * partially parse the cc so leave to callback to decide if that is 4177 * acceptable. 4178 */ 4179 if (skb->len > cc->max_len) 4180 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4181 cc->op, skb->len, cc->max_len); 4182 4183 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4184 if (!data) 4185 return HCI_ERROR_UNSPECIFIED; 4186 4187 return cc->func(hdev, data, skb); 4188 } 4189 4190 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4191 struct sk_buff *skb, u16 *opcode, u8 *status, 4192 hci_req_complete_t *req_complete, 4193 hci_req_complete_skb_t *req_complete_skb) 4194 { 4195 struct hci_ev_cmd_complete *ev = data; 4196 int i; 4197 4198 *opcode = __le16_to_cpu(ev->opcode); 4199 4200 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4201 4202 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4203 if (hci_cc_table[i].op == *opcode) { 4204 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4205 break; 4206 } 4207 } 4208 4209 if (i == ARRAY_SIZE(hci_cc_table)) { 4210 /* Unknown opcode, assume byte 0 contains the status, so 4211 * that e.g. __hci_cmd_sync() properly returns errors 4212 * for vendor specific commands send by HCI drivers. 4213 * If a vendor doesn't actually follow this convention we may 4214 * need to introduce a vendor CC table in order to properly set 4215 * the status. 4216 */ 4217 *status = skb->data[0]; 4218 } 4219 4220 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4221 4222 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4223 req_complete_skb); 4224 4225 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4226 bt_dev_err(hdev, 4227 "unexpected event for opcode 0x%4.4x", *opcode); 4228 return; 4229 } 4230 4231 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4232 queue_work(hdev->workqueue, &hdev->cmd_work); 4233 } 4234 4235 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4236 { 4237 struct hci_cp_le_create_cis *cp; 4238 bool pending = false; 4239 int i; 4240 4241 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4242 4243 if (!status) 4244 return; 4245 4246 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4247 if (!cp) 4248 return; 4249 4250 hci_dev_lock(hdev); 4251 4252 /* Remove connection if command failed */ 4253 for (i = 0; cp->num_cis; cp->num_cis--, i++) { 4254 struct hci_conn *conn; 4255 u16 handle; 4256 4257 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4258 4259 conn = hci_conn_hash_lookup_handle(hdev, handle); 4260 if (conn) { 4261 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4262 &conn->flags)) 4263 pending = true; 4264 conn->state = BT_CLOSED; 4265 hci_connect_cfm(conn, status); 4266 hci_conn_del(conn); 4267 } 4268 } 4269 4270 if (pending) 4271 hci_le_create_cis_pending(hdev); 4272 4273 hci_dev_unlock(hdev); 4274 } 4275 4276 #define HCI_CS(_op, _func) \ 4277 { \ 4278 .op = _op, \ 4279 .func = _func, \ 4280 } 4281 4282 static const struct hci_cs { 4283 u16 op; 4284 void (*func)(struct hci_dev *hdev, __u8 status); 4285 } hci_cs_table[] = { 4286 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4287 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4288 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4289 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4290 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4291 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4292 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4293 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4294 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4295 hci_cs_read_remote_ext_features), 4296 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4297 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4298 hci_cs_enhanced_setup_sync_conn), 4299 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4300 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4301 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4302 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4303 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4304 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4305 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4306 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4307 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4308 }; 4309 4310 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4311 struct sk_buff *skb, u16 *opcode, u8 *status, 4312 hci_req_complete_t *req_complete, 4313 hci_req_complete_skb_t *req_complete_skb) 4314 { 4315 struct hci_ev_cmd_status *ev = data; 4316 int i; 4317 4318 *opcode = __le16_to_cpu(ev->opcode); 4319 *status = ev->status; 4320 4321 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4322 4323 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4324 if (hci_cs_table[i].op == *opcode) { 4325 hci_cs_table[i].func(hdev, ev->status); 4326 break; 4327 } 4328 } 4329 4330 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4331 4332 /* Indicate request completion if the command failed. Also, if 4333 * we're not waiting for a special event and we get a success 4334 * command status we should try to flag the request as completed 4335 * (since for this kind of commands there will not be a command 4336 * complete event). 4337 */ 4338 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { 4339 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4340 req_complete_skb); 4341 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4342 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4343 *opcode); 4344 return; 4345 } 4346 } 4347 4348 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4349 queue_work(hdev->workqueue, &hdev->cmd_work); 4350 } 4351 4352 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4353 struct sk_buff *skb) 4354 { 4355 struct hci_ev_hardware_error *ev = data; 4356 4357 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4358 4359 hdev->hw_error_code = ev->code; 4360 4361 queue_work(hdev->req_workqueue, &hdev->error_reset); 4362 } 4363 4364 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4365 struct sk_buff *skb) 4366 { 4367 struct hci_ev_role_change *ev = data; 4368 struct hci_conn *conn; 4369 4370 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4371 4372 hci_dev_lock(hdev); 4373 4374 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4375 if (conn) { 4376 if (!ev->status) 4377 conn->role = ev->role; 4378 4379 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4380 4381 hci_role_switch_cfm(conn, ev->status, ev->role); 4382 } 4383 4384 hci_dev_unlock(hdev); 4385 } 4386 4387 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4388 struct sk_buff *skb) 4389 { 4390 struct hci_ev_num_comp_pkts *ev = data; 4391 int i; 4392 4393 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4394 flex_array_size(ev, handles, ev->num))) 4395 return; 4396 4397 bt_dev_dbg(hdev, "num %d", ev->num); 4398 4399 for (i = 0; i < ev->num; i++) { 4400 struct hci_comp_pkts_info *info = &ev->handles[i]; 4401 struct hci_conn *conn; 4402 __u16 handle, count; 4403 4404 handle = __le16_to_cpu(info->handle); 4405 count = __le16_to_cpu(info->count); 4406 4407 conn = hci_conn_hash_lookup_handle(hdev, handle); 4408 if (!conn) 4409 continue; 4410 4411 conn->sent -= count; 4412 4413 switch (conn->type) { 4414 case ACL_LINK: 4415 hdev->acl_cnt += count; 4416 if (hdev->acl_cnt > hdev->acl_pkts) 4417 hdev->acl_cnt = hdev->acl_pkts; 4418 break; 4419 4420 case LE_LINK: 4421 if (hdev->le_pkts) { 4422 hdev->le_cnt += count; 4423 if (hdev->le_cnt > hdev->le_pkts) 4424 hdev->le_cnt = hdev->le_pkts; 4425 } else { 4426 hdev->acl_cnt += count; 4427 if (hdev->acl_cnt > hdev->acl_pkts) 4428 hdev->acl_cnt = hdev->acl_pkts; 4429 } 4430 break; 4431 4432 case SCO_LINK: 4433 hdev->sco_cnt += count; 4434 if (hdev->sco_cnt > hdev->sco_pkts) 4435 hdev->sco_cnt = hdev->sco_pkts; 4436 break; 4437 4438 case ISO_LINK: 4439 if (hdev->iso_pkts) { 4440 hdev->iso_cnt += count; 4441 if (hdev->iso_cnt > hdev->iso_pkts) 4442 hdev->iso_cnt = hdev->iso_pkts; 4443 } else if (hdev->le_pkts) { 4444 hdev->le_cnt += count; 4445 if (hdev->le_cnt > hdev->le_pkts) 4446 hdev->le_cnt = hdev->le_pkts; 4447 } else { 4448 hdev->acl_cnt += count; 4449 if (hdev->acl_cnt > hdev->acl_pkts) 4450 hdev->acl_cnt = hdev->acl_pkts; 4451 } 4452 break; 4453 4454 default: 4455 bt_dev_err(hdev, "unknown type %d conn %p", 4456 conn->type, conn); 4457 break; 4458 } 4459 } 4460 4461 queue_work(hdev->workqueue, &hdev->tx_work); 4462 } 4463 4464 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4465 struct sk_buff *skb) 4466 { 4467 struct hci_ev_mode_change *ev = data; 4468 struct hci_conn *conn; 4469 4470 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4471 4472 hci_dev_lock(hdev); 4473 4474 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4475 if (conn) { 4476 conn->mode = ev->mode; 4477 4478 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4479 &conn->flags)) { 4480 if (conn->mode == HCI_CM_ACTIVE) 4481 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4482 else 4483 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4484 } 4485 4486 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4487 hci_sco_setup(conn, ev->status); 4488 } 4489 4490 hci_dev_unlock(hdev); 4491 } 4492 4493 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4494 struct sk_buff *skb) 4495 { 4496 struct hci_ev_pin_code_req *ev = data; 4497 struct hci_conn *conn; 4498 4499 bt_dev_dbg(hdev, ""); 4500 4501 hci_dev_lock(hdev); 4502 4503 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4504 if (!conn) 4505 goto unlock; 4506 4507 if (conn->state == BT_CONNECTED) { 4508 hci_conn_hold(conn); 4509 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4510 hci_conn_drop(conn); 4511 } 4512 4513 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4514 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4515 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4516 sizeof(ev->bdaddr), &ev->bdaddr); 4517 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4518 u8 secure; 4519 4520 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4521 secure = 1; 4522 else 4523 secure = 0; 4524 4525 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4526 } 4527 4528 unlock: 4529 hci_dev_unlock(hdev); 4530 } 4531 4532 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4533 { 4534 if (key_type == HCI_LK_CHANGED_COMBINATION) 4535 return; 4536 4537 conn->pin_length = pin_len; 4538 conn->key_type = key_type; 4539 4540 switch (key_type) { 4541 case HCI_LK_LOCAL_UNIT: 4542 case HCI_LK_REMOTE_UNIT: 4543 case HCI_LK_DEBUG_COMBINATION: 4544 return; 4545 case HCI_LK_COMBINATION: 4546 if (pin_len == 16) 4547 conn->pending_sec_level = BT_SECURITY_HIGH; 4548 else 4549 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4550 break; 4551 case HCI_LK_UNAUTH_COMBINATION_P192: 4552 case HCI_LK_UNAUTH_COMBINATION_P256: 4553 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4554 break; 4555 case HCI_LK_AUTH_COMBINATION_P192: 4556 conn->pending_sec_level = BT_SECURITY_HIGH; 4557 break; 4558 case HCI_LK_AUTH_COMBINATION_P256: 4559 conn->pending_sec_level = BT_SECURITY_FIPS; 4560 break; 4561 } 4562 } 4563 4564 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4565 struct sk_buff *skb) 4566 { 4567 struct hci_ev_link_key_req *ev = data; 4568 struct hci_cp_link_key_reply cp; 4569 struct hci_conn *conn; 4570 struct link_key *key; 4571 4572 bt_dev_dbg(hdev, ""); 4573 4574 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4575 return; 4576 4577 hci_dev_lock(hdev); 4578 4579 key = hci_find_link_key(hdev, &ev->bdaddr); 4580 if (!key) { 4581 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4582 goto not_found; 4583 } 4584 4585 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4586 4587 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4588 if (conn) { 4589 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4590 4591 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4592 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4593 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4594 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4595 goto not_found; 4596 } 4597 4598 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4599 (conn->pending_sec_level == BT_SECURITY_HIGH || 4600 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4601 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4602 goto not_found; 4603 } 4604 4605 conn_set_key(conn, key->type, key->pin_len); 4606 } 4607 4608 bacpy(&cp.bdaddr, &ev->bdaddr); 4609 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4610 4611 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4612 4613 hci_dev_unlock(hdev); 4614 4615 return; 4616 4617 not_found: 4618 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4619 hci_dev_unlock(hdev); 4620 } 4621 4622 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4623 struct sk_buff *skb) 4624 { 4625 struct hci_ev_link_key_notify *ev = data; 4626 struct hci_conn *conn; 4627 struct link_key *key; 4628 bool persistent; 4629 u8 pin_len = 0; 4630 4631 bt_dev_dbg(hdev, ""); 4632 4633 hci_dev_lock(hdev); 4634 4635 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4636 if (!conn) 4637 goto unlock; 4638 4639 /* Ignore NULL link key against CVE-2020-26555 */ 4640 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4641 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4642 &ev->bdaddr); 4643 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4644 hci_conn_drop(conn); 4645 goto unlock; 4646 } 4647 4648 hci_conn_hold(conn); 4649 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4650 hci_conn_drop(conn); 4651 4652 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4653 conn_set_key(conn, ev->key_type, conn->pin_length); 4654 4655 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4656 goto unlock; 4657 4658 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4659 ev->key_type, pin_len, &persistent); 4660 if (!key) 4661 goto unlock; 4662 4663 /* Update connection information since adding the key will have 4664 * fixed up the type in the case of changed combination keys. 4665 */ 4666 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4667 conn_set_key(conn, key->type, key->pin_len); 4668 4669 mgmt_new_link_key(hdev, key, persistent); 4670 4671 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4672 * is set. If it's not set simply remove the key from the kernel 4673 * list (we've still notified user space about it but with 4674 * store_hint being 0). 4675 */ 4676 if (key->type == HCI_LK_DEBUG_COMBINATION && 4677 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4678 list_del_rcu(&key->list); 4679 kfree_rcu(key, rcu); 4680 goto unlock; 4681 } 4682 4683 if (persistent) 4684 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4685 else 4686 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4687 4688 unlock: 4689 hci_dev_unlock(hdev); 4690 } 4691 4692 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4693 struct sk_buff *skb) 4694 { 4695 struct hci_ev_clock_offset *ev = data; 4696 struct hci_conn *conn; 4697 4698 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4699 4700 hci_dev_lock(hdev); 4701 4702 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4703 if (conn && !ev->status) { 4704 struct inquiry_entry *ie; 4705 4706 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4707 if (ie) { 4708 ie->data.clock_offset = ev->clock_offset; 4709 ie->timestamp = jiffies; 4710 } 4711 } 4712 4713 hci_dev_unlock(hdev); 4714 } 4715 4716 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4717 struct sk_buff *skb) 4718 { 4719 struct hci_ev_pkt_type_change *ev = data; 4720 struct hci_conn *conn; 4721 4722 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4723 4724 hci_dev_lock(hdev); 4725 4726 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4727 if (conn && !ev->status) 4728 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4729 4730 hci_dev_unlock(hdev); 4731 } 4732 4733 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4734 struct sk_buff *skb) 4735 { 4736 struct hci_ev_pscan_rep_mode *ev = data; 4737 struct inquiry_entry *ie; 4738 4739 bt_dev_dbg(hdev, ""); 4740 4741 hci_dev_lock(hdev); 4742 4743 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4744 if (ie) { 4745 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4746 ie->timestamp = jiffies; 4747 } 4748 4749 hci_dev_unlock(hdev); 4750 } 4751 4752 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4753 struct sk_buff *skb) 4754 { 4755 struct hci_ev_inquiry_result_rssi *ev = edata; 4756 struct inquiry_data data; 4757 int i; 4758 4759 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4760 4761 if (!ev->num) 4762 return; 4763 4764 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4765 return; 4766 4767 hci_dev_lock(hdev); 4768 4769 if (skb->len == array_size(ev->num, 4770 sizeof(struct inquiry_info_rssi_pscan))) { 4771 struct inquiry_info_rssi_pscan *info; 4772 4773 for (i = 0; i < ev->num; i++) { 4774 u32 flags; 4775 4776 info = hci_ev_skb_pull(hdev, skb, 4777 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4778 sizeof(*info)); 4779 if (!info) { 4780 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4781 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4782 goto unlock; 4783 } 4784 4785 bacpy(&data.bdaddr, &info->bdaddr); 4786 data.pscan_rep_mode = info->pscan_rep_mode; 4787 data.pscan_period_mode = info->pscan_period_mode; 4788 data.pscan_mode = info->pscan_mode; 4789 memcpy(data.dev_class, info->dev_class, 3); 4790 data.clock_offset = info->clock_offset; 4791 data.rssi = info->rssi; 4792 data.ssp_mode = 0x00; 4793 4794 flags = hci_inquiry_cache_update(hdev, &data, false); 4795 4796 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4797 info->dev_class, info->rssi, 4798 flags, NULL, 0, NULL, 0, 0); 4799 } 4800 } else if (skb->len == array_size(ev->num, 4801 sizeof(struct inquiry_info_rssi))) { 4802 struct inquiry_info_rssi *info; 4803 4804 for (i = 0; i < ev->num; i++) { 4805 u32 flags; 4806 4807 info = hci_ev_skb_pull(hdev, skb, 4808 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4809 sizeof(*info)); 4810 if (!info) { 4811 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4812 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4813 goto unlock; 4814 } 4815 4816 bacpy(&data.bdaddr, &info->bdaddr); 4817 data.pscan_rep_mode = info->pscan_rep_mode; 4818 data.pscan_period_mode = info->pscan_period_mode; 4819 data.pscan_mode = 0x00; 4820 memcpy(data.dev_class, info->dev_class, 3); 4821 data.clock_offset = info->clock_offset; 4822 data.rssi = info->rssi; 4823 data.ssp_mode = 0x00; 4824 4825 flags = hci_inquiry_cache_update(hdev, &data, false); 4826 4827 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4828 info->dev_class, info->rssi, 4829 flags, NULL, 0, NULL, 0, 0); 4830 } 4831 } else { 4832 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4833 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4834 } 4835 unlock: 4836 hci_dev_unlock(hdev); 4837 } 4838 4839 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4840 struct sk_buff *skb) 4841 { 4842 struct hci_ev_remote_ext_features *ev = data; 4843 struct hci_conn *conn; 4844 4845 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4846 4847 hci_dev_lock(hdev); 4848 4849 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4850 if (!conn) 4851 goto unlock; 4852 4853 if (ev->page < HCI_MAX_PAGES) 4854 memcpy(conn->features[ev->page], ev->features, 8); 4855 4856 if (!ev->status && ev->page == 0x01) { 4857 struct inquiry_entry *ie; 4858 4859 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4860 if (ie) 4861 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4862 4863 if (ev->features[0] & LMP_HOST_SSP) { 4864 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4865 } else { 4866 /* It is mandatory by the Bluetooth specification that 4867 * Extended Inquiry Results are only used when Secure 4868 * Simple Pairing is enabled, but some devices violate 4869 * this. 4870 * 4871 * To make these devices work, the internal SSP 4872 * enabled flag needs to be cleared if the remote host 4873 * features do not indicate SSP support */ 4874 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4875 } 4876 4877 if (ev->features[0] & LMP_HOST_SC) 4878 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4879 } 4880 4881 if (conn->state != BT_CONFIG) 4882 goto unlock; 4883 4884 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4885 struct hci_cp_remote_name_req cp; 4886 memset(&cp, 0, sizeof(cp)); 4887 bacpy(&cp.bdaddr, &conn->dst); 4888 cp.pscan_rep_mode = 0x02; 4889 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4890 } else { 4891 mgmt_device_connected(hdev, conn, NULL, 0); 4892 } 4893 4894 if (!hci_outgoing_auth_needed(hdev, conn)) { 4895 conn->state = BT_CONNECTED; 4896 hci_connect_cfm(conn, ev->status); 4897 hci_conn_drop(conn); 4898 } 4899 4900 unlock: 4901 hci_dev_unlock(hdev); 4902 } 4903 4904 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4905 struct sk_buff *skb) 4906 { 4907 struct hci_ev_sync_conn_complete *ev = data; 4908 struct hci_conn *conn; 4909 u8 status = ev->status; 4910 4911 switch (ev->link_type) { 4912 case SCO_LINK: 4913 case ESCO_LINK: 4914 break; 4915 default: 4916 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4917 * for HCI_Synchronous_Connection_Complete is limited to 4918 * either SCO or eSCO 4919 */ 4920 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4921 return; 4922 } 4923 4924 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4925 4926 hci_dev_lock(hdev); 4927 4928 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4929 if (!conn) { 4930 if (ev->link_type == ESCO_LINK) 4931 goto unlock; 4932 4933 /* When the link type in the event indicates SCO connection 4934 * and lookup of the connection object fails, then check 4935 * if an eSCO connection object exists. 4936 * 4937 * The core limits the synchronous connections to either 4938 * SCO or eSCO. The eSCO connection is preferred and tried 4939 * to be setup first and until successfully established, 4940 * the link type will be hinted as eSCO. 4941 */ 4942 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4943 if (!conn) 4944 goto unlock; 4945 } 4946 4947 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4948 * Processing it more than once per connection can corrupt kernel memory. 4949 * 4950 * As the connection handle is set here for the first time, it indicates 4951 * whether the connection is already set up. 4952 */ 4953 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 4954 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 4955 goto unlock; 4956 } 4957 4958 switch (status) { 4959 case 0x00: 4960 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 4961 if (status) { 4962 conn->state = BT_CLOSED; 4963 break; 4964 } 4965 4966 conn->state = BT_CONNECTED; 4967 conn->type = ev->link_type; 4968 4969 hci_debugfs_create_conn(conn); 4970 hci_conn_add_sysfs(conn); 4971 break; 4972 4973 case 0x10: /* Connection Accept Timeout */ 4974 case 0x0d: /* Connection Rejected due to Limited Resources */ 4975 case 0x11: /* Unsupported Feature or Parameter Value */ 4976 case 0x1c: /* SCO interval rejected */ 4977 case 0x1a: /* Unsupported Remote Feature */ 4978 case 0x1e: /* Invalid LMP Parameters */ 4979 case 0x1f: /* Unspecified error */ 4980 case 0x20: /* Unsupported LMP Parameter value */ 4981 if (conn->out) { 4982 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 4983 (hdev->esco_type & EDR_ESCO_MASK); 4984 if (hci_setup_sync(conn, conn->parent->handle)) 4985 goto unlock; 4986 } 4987 fallthrough; 4988 4989 default: 4990 conn->state = BT_CLOSED; 4991 break; 4992 } 4993 4994 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 4995 /* Notify only in case of SCO over HCI transport data path which 4996 * is zero and non-zero value shall be non-HCI transport data path 4997 */ 4998 if (conn->codec.data_path == 0 && hdev->notify) { 4999 switch (ev->air_mode) { 5000 case 0x02: 5001 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5002 break; 5003 case 0x03: 5004 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5005 break; 5006 } 5007 } 5008 5009 hci_connect_cfm(conn, status); 5010 if (status) 5011 hci_conn_del(conn); 5012 5013 unlock: 5014 hci_dev_unlock(hdev); 5015 } 5016 5017 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5018 { 5019 size_t parsed = 0; 5020 5021 while (parsed < eir_len) { 5022 u8 field_len = eir[0]; 5023 5024 if (field_len == 0) 5025 return parsed; 5026 5027 parsed += field_len + 1; 5028 eir += field_len + 1; 5029 } 5030 5031 return eir_len; 5032 } 5033 5034 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5035 struct sk_buff *skb) 5036 { 5037 struct hci_ev_ext_inquiry_result *ev = edata; 5038 struct inquiry_data data; 5039 size_t eir_len; 5040 int i; 5041 5042 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5043 flex_array_size(ev, info, ev->num))) 5044 return; 5045 5046 bt_dev_dbg(hdev, "num %d", ev->num); 5047 5048 if (!ev->num) 5049 return; 5050 5051 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5052 return; 5053 5054 hci_dev_lock(hdev); 5055 5056 for (i = 0; i < ev->num; i++) { 5057 struct extended_inquiry_info *info = &ev->info[i]; 5058 u32 flags; 5059 bool name_known; 5060 5061 bacpy(&data.bdaddr, &info->bdaddr); 5062 data.pscan_rep_mode = info->pscan_rep_mode; 5063 data.pscan_period_mode = info->pscan_period_mode; 5064 data.pscan_mode = 0x00; 5065 memcpy(data.dev_class, info->dev_class, 3); 5066 data.clock_offset = info->clock_offset; 5067 data.rssi = info->rssi; 5068 data.ssp_mode = 0x01; 5069 5070 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5071 name_known = eir_get_data(info->data, 5072 sizeof(info->data), 5073 EIR_NAME_COMPLETE, NULL); 5074 else 5075 name_known = true; 5076 5077 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5078 5079 eir_len = eir_get_length(info->data, sizeof(info->data)); 5080 5081 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5082 info->dev_class, info->rssi, 5083 flags, info->data, eir_len, NULL, 0, 0); 5084 } 5085 5086 hci_dev_unlock(hdev); 5087 } 5088 5089 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5090 struct sk_buff *skb) 5091 { 5092 struct hci_ev_key_refresh_complete *ev = data; 5093 struct hci_conn *conn; 5094 5095 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5096 __le16_to_cpu(ev->handle)); 5097 5098 hci_dev_lock(hdev); 5099 5100 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5101 if (!conn) 5102 goto unlock; 5103 5104 /* For BR/EDR the necessary steps are taken through the 5105 * auth_complete event. 5106 */ 5107 if (conn->type != LE_LINK) 5108 goto unlock; 5109 5110 if (!ev->status) 5111 conn->sec_level = conn->pending_sec_level; 5112 5113 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5114 5115 if (ev->status && conn->state == BT_CONNECTED) { 5116 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5117 hci_conn_drop(conn); 5118 goto unlock; 5119 } 5120 5121 if (conn->state == BT_CONFIG) { 5122 if (!ev->status) 5123 conn->state = BT_CONNECTED; 5124 5125 hci_connect_cfm(conn, ev->status); 5126 hci_conn_drop(conn); 5127 } else { 5128 hci_auth_cfm(conn, ev->status); 5129 5130 hci_conn_hold(conn); 5131 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5132 hci_conn_drop(conn); 5133 } 5134 5135 unlock: 5136 hci_dev_unlock(hdev); 5137 } 5138 5139 static u8 hci_get_auth_req(struct hci_conn *conn) 5140 { 5141 /* If remote requests no-bonding follow that lead */ 5142 if (conn->remote_auth == HCI_AT_NO_BONDING || 5143 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5144 return conn->remote_auth | (conn->auth_type & 0x01); 5145 5146 /* If both remote and local have enough IO capabilities, require 5147 * MITM protection 5148 */ 5149 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5150 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5151 return conn->remote_auth | 0x01; 5152 5153 /* No MITM protection possible so ignore remote requirement */ 5154 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5155 } 5156 5157 static u8 bredr_oob_data_present(struct hci_conn *conn) 5158 { 5159 struct hci_dev *hdev = conn->hdev; 5160 struct oob_data *data; 5161 5162 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5163 if (!data) 5164 return 0x00; 5165 5166 if (bredr_sc_enabled(hdev)) { 5167 /* When Secure Connections is enabled, then just 5168 * return the present value stored with the OOB 5169 * data. The stored value contains the right present 5170 * information. However it can only be trusted when 5171 * not in Secure Connection Only mode. 5172 */ 5173 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5174 return data->present; 5175 5176 /* When Secure Connections Only mode is enabled, then 5177 * the P-256 values are required. If they are not 5178 * available, then do not declare that OOB data is 5179 * present. 5180 */ 5181 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5182 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5183 return 0x00; 5184 5185 return 0x02; 5186 } 5187 5188 /* When Secure Connections is not enabled or actually 5189 * not supported by the hardware, then check that if 5190 * P-192 data values are present. 5191 */ 5192 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5193 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5194 return 0x00; 5195 5196 return 0x01; 5197 } 5198 5199 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5200 struct sk_buff *skb) 5201 { 5202 struct hci_ev_io_capa_request *ev = data; 5203 struct hci_conn *conn; 5204 5205 bt_dev_dbg(hdev, ""); 5206 5207 hci_dev_lock(hdev); 5208 5209 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5210 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5211 goto unlock; 5212 5213 /* Assume remote supports SSP since it has triggered this event */ 5214 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5215 5216 hci_conn_hold(conn); 5217 5218 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5219 goto unlock; 5220 5221 /* Allow pairing if we're pairable, the initiators of the 5222 * pairing or if the remote is not requesting bonding. 5223 */ 5224 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5225 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5226 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5227 struct hci_cp_io_capability_reply cp; 5228 5229 bacpy(&cp.bdaddr, &ev->bdaddr); 5230 /* Change the IO capability from KeyboardDisplay 5231 * to DisplayYesNo as it is not supported by BT spec. */ 5232 cp.capability = (conn->io_capability == 0x04) ? 5233 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5234 5235 /* If we are initiators, there is no remote information yet */ 5236 if (conn->remote_auth == 0xff) { 5237 /* Request MITM protection if our IO caps allow it 5238 * except for the no-bonding case. 5239 */ 5240 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5241 conn->auth_type != HCI_AT_NO_BONDING) 5242 conn->auth_type |= 0x01; 5243 } else { 5244 conn->auth_type = hci_get_auth_req(conn); 5245 } 5246 5247 /* If we're not bondable, force one of the non-bondable 5248 * authentication requirement values. 5249 */ 5250 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5251 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5252 5253 cp.authentication = conn->auth_type; 5254 cp.oob_data = bredr_oob_data_present(conn); 5255 5256 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5257 sizeof(cp), &cp); 5258 } else { 5259 struct hci_cp_io_capability_neg_reply cp; 5260 5261 bacpy(&cp.bdaddr, &ev->bdaddr); 5262 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5263 5264 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5265 sizeof(cp), &cp); 5266 } 5267 5268 unlock: 5269 hci_dev_unlock(hdev); 5270 } 5271 5272 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5273 struct sk_buff *skb) 5274 { 5275 struct hci_ev_io_capa_reply *ev = data; 5276 struct hci_conn *conn; 5277 5278 bt_dev_dbg(hdev, ""); 5279 5280 hci_dev_lock(hdev); 5281 5282 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5283 if (!conn) 5284 goto unlock; 5285 5286 conn->remote_cap = ev->capability; 5287 conn->remote_auth = ev->authentication; 5288 5289 unlock: 5290 hci_dev_unlock(hdev); 5291 } 5292 5293 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5294 struct sk_buff *skb) 5295 { 5296 struct hci_ev_user_confirm_req *ev = data; 5297 int loc_mitm, rem_mitm, confirm_hint = 0; 5298 struct hci_conn *conn; 5299 5300 bt_dev_dbg(hdev, ""); 5301 5302 hci_dev_lock(hdev); 5303 5304 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5305 goto unlock; 5306 5307 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5308 if (!conn) 5309 goto unlock; 5310 5311 loc_mitm = (conn->auth_type & 0x01); 5312 rem_mitm = (conn->remote_auth & 0x01); 5313 5314 /* If we require MITM but the remote device can't provide that 5315 * (it has NoInputNoOutput) then reject the confirmation 5316 * request. We check the security level here since it doesn't 5317 * necessarily match conn->auth_type. 5318 */ 5319 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5320 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5321 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5322 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5323 sizeof(ev->bdaddr), &ev->bdaddr); 5324 goto unlock; 5325 } 5326 5327 /* If no side requires MITM protection; auto-accept */ 5328 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5329 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5330 5331 /* If we're not the initiators request authorization to 5332 * proceed from user space (mgmt_user_confirm with 5333 * confirm_hint set to 1). The exception is if neither 5334 * side had MITM or if the local IO capability is 5335 * NoInputNoOutput, in which case we do auto-accept 5336 */ 5337 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5338 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5339 (loc_mitm || rem_mitm)) { 5340 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5341 confirm_hint = 1; 5342 goto confirm; 5343 } 5344 5345 /* If there already exists link key in local host, leave the 5346 * decision to user space since the remote device could be 5347 * legitimate or malicious. 5348 */ 5349 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5350 bt_dev_dbg(hdev, "Local host already has link key"); 5351 confirm_hint = 1; 5352 goto confirm; 5353 } 5354 5355 BT_DBG("Auto-accept of user confirmation with %ums delay", 5356 hdev->auto_accept_delay); 5357 5358 if (hdev->auto_accept_delay > 0) { 5359 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5360 queue_delayed_work(conn->hdev->workqueue, 5361 &conn->auto_accept_work, delay); 5362 goto unlock; 5363 } 5364 5365 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5366 sizeof(ev->bdaddr), &ev->bdaddr); 5367 goto unlock; 5368 } 5369 5370 confirm: 5371 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5372 le32_to_cpu(ev->passkey), confirm_hint); 5373 5374 unlock: 5375 hci_dev_unlock(hdev); 5376 } 5377 5378 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5379 struct sk_buff *skb) 5380 { 5381 struct hci_ev_user_passkey_req *ev = data; 5382 5383 bt_dev_dbg(hdev, ""); 5384 5385 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5386 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5387 } 5388 5389 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5390 struct sk_buff *skb) 5391 { 5392 struct hci_ev_user_passkey_notify *ev = data; 5393 struct hci_conn *conn; 5394 5395 bt_dev_dbg(hdev, ""); 5396 5397 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5398 if (!conn) 5399 return; 5400 5401 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5402 conn->passkey_entered = 0; 5403 5404 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5405 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5406 conn->dst_type, conn->passkey_notify, 5407 conn->passkey_entered); 5408 } 5409 5410 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5411 struct sk_buff *skb) 5412 { 5413 struct hci_ev_keypress_notify *ev = data; 5414 struct hci_conn *conn; 5415 5416 bt_dev_dbg(hdev, ""); 5417 5418 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5419 if (!conn) 5420 return; 5421 5422 switch (ev->type) { 5423 case HCI_KEYPRESS_STARTED: 5424 conn->passkey_entered = 0; 5425 return; 5426 5427 case HCI_KEYPRESS_ENTERED: 5428 conn->passkey_entered++; 5429 break; 5430 5431 case HCI_KEYPRESS_ERASED: 5432 conn->passkey_entered--; 5433 break; 5434 5435 case HCI_KEYPRESS_CLEARED: 5436 conn->passkey_entered = 0; 5437 break; 5438 5439 case HCI_KEYPRESS_COMPLETED: 5440 return; 5441 } 5442 5443 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5444 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5445 conn->dst_type, conn->passkey_notify, 5446 conn->passkey_entered); 5447 } 5448 5449 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5450 struct sk_buff *skb) 5451 { 5452 struct hci_ev_simple_pair_complete *ev = data; 5453 struct hci_conn *conn; 5454 5455 bt_dev_dbg(hdev, ""); 5456 5457 hci_dev_lock(hdev); 5458 5459 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5460 if (!conn || !hci_conn_ssp_enabled(conn)) 5461 goto unlock; 5462 5463 /* Reset the authentication requirement to unknown */ 5464 conn->remote_auth = 0xff; 5465 5466 /* To avoid duplicate auth_failed events to user space we check 5467 * the HCI_CONN_AUTH_PEND flag which will be set if we 5468 * initiated the authentication. A traditional auth_complete 5469 * event gets always produced as initiator and is also mapped to 5470 * the mgmt_auth_failed event */ 5471 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5472 mgmt_auth_failed(conn, ev->status); 5473 5474 hci_conn_drop(conn); 5475 5476 unlock: 5477 hci_dev_unlock(hdev); 5478 } 5479 5480 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5481 struct sk_buff *skb) 5482 { 5483 struct hci_ev_remote_host_features *ev = data; 5484 struct inquiry_entry *ie; 5485 struct hci_conn *conn; 5486 5487 bt_dev_dbg(hdev, ""); 5488 5489 hci_dev_lock(hdev); 5490 5491 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5492 if (conn) 5493 memcpy(conn->features[1], ev->features, 8); 5494 5495 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5496 if (ie) 5497 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5498 5499 hci_dev_unlock(hdev); 5500 } 5501 5502 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5503 struct sk_buff *skb) 5504 { 5505 struct hci_ev_remote_oob_data_request *ev = edata; 5506 struct oob_data *data; 5507 5508 bt_dev_dbg(hdev, ""); 5509 5510 hci_dev_lock(hdev); 5511 5512 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5513 goto unlock; 5514 5515 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5516 if (!data) { 5517 struct hci_cp_remote_oob_data_neg_reply cp; 5518 5519 bacpy(&cp.bdaddr, &ev->bdaddr); 5520 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5521 sizeof(cp), &cp); 5522 goto unlock; 5523 } 5524 5525 if (bredr_sc_enabled(hdev)) { 5526 struct hci_cp_remote_oob_ext_data_reply cp; 5527 5528 bacpy(&cp.bdaddr, &ev->bdaddr); 5529 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5530 memset(cp.hash192, 0, sizeof(cp.hash192)); 5531 memset(cp.rand192, 0, sizeof(cp.rand192)); 5532 } else { 5533 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5534 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5535 } 5536 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5537 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5538 5539 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5540 sizeof(cp), &cp); 5541 } else { 5542 struct hci_cp_remote_oob_data_reply cp; 5543 5544 bacpy(&cp.bdaddr, &ev->bdaddr); 5545 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5546 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5547 5548 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5549 sizeof(cp), &cp); 5550 } 5551 5552 unlock: 5553 hci_dev_unlock(hdev); 5554 } 5555 5556 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5557 u8 bdaddr_type, bdaddr_t *local_rpa) 5558 { 5559 if (conn->out) { 5560 conn->dst_type = bdaddr_type; 5561 conn->resp_addr_type = bdaddr_type; 5562 bacpy(&conn->resp_addr, bdaddr); 5563 5564 /* Check if the controller has set a Local RPA then it must be 5565 * used instead or hdev->rpa. 5566 */ 5567 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5568 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5569 bacpy(&conn->init_addr, local_rpa); 5570 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5571 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5572 bacpy(&conn->init_addr, &conn->hdev->rpa); 5573 } else { 5574 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5575 &conn->init_addr_type); 5576 } 5577 } else { 5578 conn->resp_addr_type = conn->hdev->adv_addr_type; 5579 /* Check if the controller has set a Local RPA then it must be 5580 * used instead or hdev->rpa. 5581 */ 5582 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5583 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5584 bacpy(&conn->resp_addr, local_rpa); 5585 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5586 /* In case of ext adv, resp_addr will be updated in 5587 * Adv Terminated event. 5588 */ 5589 if (!ext_adv_capable(conn->hdev)) 5590 bacpy(&conn->resp_addr, 5591 &conn->hdev->random_addr); 5592 } else { 5593 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5594 } 5595 5596 conn->init_addr_type = bdaddr_type; 5597 bacpy(&conn->init_addr, bdaddr); 5598 5599 /* For incoming connections, set the default minimum 5600 * and maximum connection interval. They will be used 5601 * to check if the parameters are in range and if not 5602 * trigger the connection update procedure. 5603 */ 5604 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5605 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5606 } 5607 } 5608 5609 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5610 bdaddr_t *bdaddr, u8 bdaddr_type, 5611 bdaddr_t *local_rpa, u8 role, u16 handle, 5612 u16 interval, u16 latency, 5613 u16 supervision_timeout) 5614 { 5615 struct hci_conn_params *params; 5616 struct hci_conn *conn; 5617 struct smp_irk *irk; 5618 u8 addr_type; 5619 5620 hci_dev_lock(hdev); 5621 5622 /* All controllers implicitly stop advertising in the event of a 5623 * connection, so ensure that the state bit is cleared. 5624 */ 5625 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5626 5627 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5628 if (!conn) { 5629 /* In case of error status and there is no connection pending 5630 * just unlock as there is nothing to cleanup. 5631 */ 5632 if (status) 5633 goto unlock; 5634 5635 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5636 if (IS_ERR(conn)) { 5637 bt_dev_err(hdev, "connection err: %ld", PTR_ERR(conn)); 5638 goto unlock; 5639 } 5640 5641 conn->dst_type = bdaddr_type; 5642 5643 /* If we didn't have a hci_conn object previously 5644 * but we're in central role this must be something 5645 * initiated using an accept list. Since accept list based 5646 * connections are not "first class citizens" we don't 5647 * have full tracking of them. Therefore, we go ahead 5648 * with a "best effort" approach of determining the 5649 * initiator address based on the HCI_PRIVACY flag. 5650 */ 5651 if (conn->out) { 5652 conn->resp_addr_type = bdaddr_type; 5653 bacpy(&conn->resp_addr, bdaddr); 5654 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5655 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5656 bacpy(&conn->init_addr, &hdev->rpa); 5657 } else { 5658 hci_copy_identity_address(hdev, 5659 &conn->init_addr, 5660 &conn->init_addr_type); 5661 } 5662 } 5663 } else { 5664 cancel_delayed_work(&conn->le_conn_timeout); 5665 } 5666 5667 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5668 * Processing it more than once per connection can corrupt kernel memory. 5669 * 5670 * As the connection handle is set here for the first time, it indicates 5671 * whether the connection is already set up. 5672 */ 5673 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5674 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5675 goto unlock; 5676 } 5677 5678 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5679 5680 /* Lookup the identity address from the stored connection 5681 * address and address type. 5682 * 5683 * When establishing connections to an identity address, the 5684 * connection procedure will store the resolvable random 5685 * address first. Now if it can be converted back into the 5686 * identity address, start using the identity address from 5687 * now on. 5688 */ 5689 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5690 if (irk) { 5691 bacpy(&conn->dst, &irk->bdaddr); 5692 conn->dst_type = irk->addr_type; 5693 } 5694 5695 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5696 5697 /* All connection failure handling is taken care of by the 5698 * hci_conn_failed function which is triggered by the HCI 5699 * request completion callbacks used for connecting. 5700 */ 5701 if (status || hci_conn_set_handle(conn, handle)) 5702 goto unlock; 5703 5704 /* Drop the connection if it has been aborted */ 5705 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5706 hci_conn_drop(conn); 5707 goto unlock; 5708 } 5709 5710 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5711 addr_type = BDADDR_LE_PUBLIC; 5712 else 5713 addr_type = BDADDR_LE_RANDOM; 5714 5715 /* Drop the connection if the device is blocked */ 5716 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5717 hci_conn_drop(conn); 5718 goto unlock; 5719 } 5720 5721 mgmt_device_connected(hdev, conn, NULL, 0); 5722 5723 conn->sec_level = BT_SECURITY_LOW; 5724 conn->state = BT_CONFIG; 5725 5726 /* Store current advertising instance as connection advertising instance 5727 * when sotfware rotation is in use so it can be re-enabled when 5728 * disconnected. 5729 */ 5730 if (!ext_adv_capable(hdev)) 5731 conn->adv_instance = hdev->cur_adv_instance; 5732 5733 conn->le_conn_interval = interval; 5734 conn->le_conn_latency = latency; 5735 conn->le_supv_timeout = supervision_timeout; 5736 5737 hci_debugfs_create_conn(conn); 5738 hci_conn_add_sysfs(conn); 5739 5740 /* The remote features procedure is defined for central 5741 * role only. So only in case of an initiated connection 5742 * request the remote features. 5743 * 5744 * If the local controller supports peripheral-initiated features 5745 * exchange, then requesting the remote features in peripheral 5746 * role is possible. Otherwise just transition into the 5747 * connected state without requesting the remote features. 5748 */ 5749 if (conn->out || 5750 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5751 struct hci_cp_le_read_remote_features cp; 5752 5753 cp.handle = __cpu_to_le16(conn->handle); 5754 5755 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5756 sizeof(cp), &cp); 5757 5758 hci_conn_hold(conn); 5759 } else { 5760 conn->state = BT_CONNECTED; 5761 hci_connect_cfm(conn, status); 5762 } 5763 5764 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5765 conn->dst_type); 5766 if (params) { 5767 hci_pend_le_list_del_init(params); 5768 if (params->conn) { 5769 hci_conn_drop(params->conn); 5770 hci_conn_put(params->conn); 5771 params->conn = NULL; 5772 } 5773 } 5774 5775 unlock: 5776 hci_update_passive_scan(hdev); 5777 hci_dev_unlock(hdev); 5778 } 5779 5780 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5781 struct sk_buff *skb) 5782 { 5783 struct hci_ev_le_conn_complete *ev = data; 5784 5785 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5786 5787 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5788 NULL, ev->role, le16_to_cpu(ev->handle), 5789 le16_to_cpu(ev->interval), 5790 le16_to_cpu(ev->latency), 5791 le16_to_cpu(ev->supervision_timeout)); 5792 } 5793 5794 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5795 struct sk_buff *skb) 5796 { 5797 struct hci_ev_le_enh_conn_complete *ev = data; 5798 5799 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5800 5801 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5802 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 5803 le16_to_cpu(ev->interval), 5804 le16_to_cpu(ev->latency), 5805 le16_to_cpu(ev->supervision_timeout)); 5806 } 5807 5808 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 5809 struct sk_buff *skb) 5810 { 5811 struct hci_evt_le_ext_adv_set_term *ev = data; 5812 struct hci_conn *conn; 5813 struct adv_info *adv, *n; 5814 5815 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5816 5817 /* The Bluetooth Core 5.3 specification clearly states that this event 5818 * shall not be sent when the Host disables the advertising set. So in 5819 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 5820 * 5821 * When the Host disables an advertising set, all cleanup is done via 5822 * its command callback and not needed to be duplicated here. 5823 */ 5824 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 5825 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 5826 return; 5827 } 5828 5829 hci_dev_lock(hdev); 5830 5831 adv = hci_find_adv_instance(hdev, ev->handle); 5832 5833 if (ev->status) { 5834 if (!adv) 5835 goto unlock; 5836 5837 /* Remove advertising as it has been terminated */ 5838 hci_remove_adv_instance(hdev, ev->handle); 5839 mgmt_advertising_removed(NULL, hdev, ev->handle); 5840 5841 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 5842 if (adv->enabled) 5843 goto unlock; 5844 } 5845 5846 /* We are no longer advertising, clear HCI_LE_ADV */ 5847 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5848 goto unlock; 5849 } 5850 5851 if (adv) 5852 adv->enabled = false; 5853 5854 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 5855 if (conn) { 5856 /* Store handle in the connection so the correct advertising 5857 * instance can be re-enabled when disconnected. 5858 */ 5859 conn->adv_instance = ev->handle; 5860 5861 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 5862 bacmp(&conn->resp_addr, BDADDR_ANY)) 5863 goto unlock; 5864 5865 if (!ev->handle) { 5866 bacpy(&conn->resp_addr, &hdev->random_addr); 5867 goto unlock; 5868 } 5869 5870 if (adv) 5871 bacpy(&conn->resp_addr, &adv->random_addr); 5872 } 5873 5874 unlock: 5875 hci_dev_unlock(hdev); 5876 } 5877 5878 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 5879 struct sk_buff *skb) 5880 { 5881 struct hci_ev_le_conn_update_complete *ev = data; 5882 struct hci_conn *conn; 5883 5884 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5885 5886 if (ev->status) 5887 return; 5888 5889 hci_dev_lock(hdev); 5890 5891 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5892 if (conn) { 5893 conn->le_conn_interval = le16_to_cpu(ev->interval); 5894 conn->le_conn_latency = le16_to_cpu(ev->latency); 5895 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 5896 } 5897 5898 hci_dev_unlock(hdev); 5899 } 5900 5901 /* This function requires the caller holds hdev->lock */ 5902 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 5903 bdaddr_t *addr, 5904 u8 addr_type, bool addr_resolved, 5905 u8 adv_type) 5906 { 5907 struct hci_conn *conn; 5908 struct hci_conn_params *params; 5909 5910 /* If the event is not connectable don't proceed further */ 5911 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 5912 return NULL; 5913 5914 /* Ignore if the device is blocked or hdev is suspended */ 5915 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 5916 hdev->suspended) 5917 return NULL; 5918 5919 /* Most controller will fail if we try to create new connections 5920 * while we have an existing one in peripheral role. 5921 */ 5922 if (hdev->conn_hash.le_num_peripheral > 0 && 5923 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || 5924 !(hdev->le_states[3] & 0x10))) 5925 return NULL; 5926 5927 /* If we're not connectable only connect devices that we have in 5928 * our pend_le_conns list. 5929 */ 5930 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 5931 addr_type); 5932 if (!params) 5933 return NULL; 5934 5935 if (!params->explicit_connect) { 5936 switch (params->auto_connect) { 5937 case HCI_AUTO_CONN_DIRECT: 5938 /* Only devices advertising with ADV_DIRECT_IND are 5939 * triggering a connection attempt. This is allowing 5940 * incoming connections from peripheral devices. 5941 */ 5942 if (adv_type != LE_ADV_DIRECT_IND) 5943 return NULL; 5944 break; 5945 case HCI_AUTO_CONN_ALWAYS: 5946 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 5947 * are triggering a connection attempt. This means 5948 * that incoming connections from peripheral device are 5949 * accepted and also outgoing connections to peripheral 5950 * devices are established when found. 5951 */ 5952 break; 5953 default: 5954 return NULL; 5955 } 5956 } 5957 5958 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 5959 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 5960 HCI_ROLE_MASTER); 5961 if (!IS_ERR(conn)) { 5962 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 5963 * by higher layer that tried to connect, if no then 5964 * store the pointer since we don't really have any 5965 * other owner of the object besides the params that 5966 * triggered it. This way we can abort the connection if 5967 * the parameters get removed and keep the reference 5968 * count consistent once the connection is established. 5969 */ 5970 5971 if (!params->explicit_connect) 5972 params->conn = hci_conn_get(conn); 5973 5974 return conn; 5975 } 5976 5977 switch (PTR_ERR(conn)) { 5978 case -EBUSY: 5979 /* If hci_connect() returns -EBUSY it means there is already 5980 * an LE connection attempt going on. Since controllers don't 5981 * support more than one connection attempt at the time, we 5982 * don't consider this an error case. 5983 */ 5984 break; 5985 default: 5986 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 5987 return NULL; 5988 } 5989 5990 return NULL; 5991 } 5992 5993 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 5994 u8 bdaddr_type, bdaddr_t *direct_addr, 5995 u8 direct_addr_type, s8 rssi, u8 *data, u8 len, 5996 bool ext_adv, bool ctl_time, u64 instant) 5997 { 5998 struct discovery_state *d = &hdev->discovery; 5999 struct smp_irk *irk; 6000 struct hci_conn *conn; 6001 bool match, bdaddr_resolved; 6002 u32 flags; 6003 u8 *ptr; 6004 6005 switch (type) { 6006 case LE_ADV_IND: 6007 case LE_ADV_DIRECT_IND: 6008 case LE_ADV_SCAN_IND: 6009 case LE_ADV_NONCONN_IND: 6010 case LE_ADV_SCAN_RSP: 6011 break; 6012 default: 6013 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6014 "type: 0x%02x", type); 6015 return; 6016 } 6017 6018 if (len > max_adv_len(hdev)) { 6019 bt_dev_err_ratelimited(hdev, 6020 "adv larger than maximum supported"); 6021 return; 6022 } 6023 6024 /* Find the end of the data in case the report contains padded zero 6025 * bytes at the end causing an invalid length value. 6026 * 6027 * When data is NULL, len is 0 so there is no need for extra ptr 6028 * check as 'ptr < data + 0' is already false in such case. 6029 */ 6030 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6031 if (ptr + 1 + *ptr > data + len) 6032 break; 6033 } 6034 6035 /* Adjust for actual length. This handles the case when remote 6036 * device is advertising with incorrect data length. 6037 */ 6038 len = ptr - data; 6039 6040 /* If the direct address is present, then this report is from 6041 * a LE Direct Advertising Report event. In that case it is 6042 * important to see if the address is matching the local 6043 * controller address. 6044 */ 6045 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6046 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6047 &bdaddr_resolved); 6048 6049 /* Only resolvable random addresses are valid for these 6050 * kind of reports and others can be ignored. 6051 */ 6052 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6053 return; 6054 6055 /* If the controller is not using resolvable random 6056 * addresses, then this report can be ignored. 6057 */ 6058 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6059 return; 6060 6061 /* If the local IRK of the controller does not match 6062 * with the resolvable random address provided, then 6063 * this report can be ignored. 6064 */ 6065 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6066 return; 6067 } 6068 6069 /* Check if we need to convert to identity address */ 6070 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6071 if (irk) { 6072 bdaddr = &irk->bdaddr; 6073 bdaddr_type = irk->addr_type; 6074 } 6075 6076 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6077 6078 /* Check if we have been requested to connect to this device. 6079 * 6080 * direct_addr is set only for directed advertising reports (it is NULL 6081 * for advertising reports) and is already verified to be RPA above. 6082 */ 6083 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6084 type); 6085 if (!ext_adv && conn && type == LE_ADV_IND && 6086 len <= max_adv_len(hdev)) { 6087 /* Store report for later inclusion by 6088 * mgmt_device_connected 6089 */ 6090 memcpy(conn->le_adv_data, data, len); 6091 conn->le_adv_data_len = len; 6092 } 6093 6094 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6095 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6096 else 6097 flags = 0; 6098 6099 /* All scan results should be sent up for Mesh systems */ 6100 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6101 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6102 rssi, flags, data, len, NULL, 0, instant); 6103 return; 6104 } 6105 6106 /* Passive scanning shouldn't trigger any device found events, 6107 * except for devices marked as CONN_REPORT for which we do send 6108 * device found events, or advertisement monitoring requested. 6109 */ 6110 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6111 if (type == LE_ADV_DIRECT_IND) 6112 return; 6113 6114 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6115 bdaddr, bdaddr_type) && 6116 idr_is_empty(&hdev->adv_monitors_idr)) 6117 return; 6118 6119 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6120 rssi, flags, data, len, NULL, 0, 0); 6121 return; 6122 } 6123 6124 /* When receiving a scan response, then there is no way to 6125 * know if the remote device is connectable or not. However 6126 * since scan responses are merged with a previously seen 6127 * advertising report, the flags field from that report 6128 * will be used. 6129 * 6130 * In the unlikely case that a controller just sends a scan 6131 * response event that doesn't match the pending report, then 6132 * it is marked as a standalone SCAN_RSP. 6133 */ 6134 if (type == LE_ADV_SCAN_RSP) 6135 flags = MGMT_DEV_FOUND_SCAN_RSP; 6136 6137 /* If there's nothing pending either store the data from this 6138 * event or send an immediate device found event if the data 6139 * should not be stored for later. 6140 */ 6141 if (!ext_adv && !has_pending_adv_report(hdev)) { 6142 /* If the report will trigger a SCAN_REQ store it for 6143 * later merging. 6144 */ 6145 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6146 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6147 rssi, flags, data, len); 6148 return; 6149 } 6150 6151 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6152 rssi, flags, data, len, NULL, 0, 0); 6153 return; 6154 } 6155 6156 /* Check if the pending report is for the same device as the new one */ 6157 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6158 bdaddr_type == d->last_adv_addr_type); 6159 6160 /* If the pending data doesn't match this report or this isn't a 6161 * scan response (e.g. we got a duplicate ADV_IND) then force 6162 * sending of the pending data. 6163 */ 6164 if (type != LE_ADV_SCAN_RSP || !match) { 6165 /* Send out whatever is in the cache, but skip duplicates */ 6166 if (!match) 6167 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6168 d->last_adv_addr_type, NULL, 6169 d->last_adv_rssi, d->last_adv_flags, 6170 d->last_adv_data, 6171 d->last_adv_data_len, NULL, 0, 0); 6172 6173 /* If the new report will trigger a SCAN_REQ store it for 6174 * later merging. 6175 */ 6176 if (!ext_adv && (type == LE_ADV_IND || 6177 type == LE_ADV_SCAN_IND)) { 6178 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6179 rssi, flags, data, len); 6180 return; 6181 } 6182 6183 /* The advertising reports cannot be merged, so clear 6184 * the pending report and send out a device found event. 6185 */ 6186 clear_pending_adv_report(hdev); 6187 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6188 rssi, flags, data, len, NULL, 0, 0); 6189 return; 6190 } 6191 6192 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6193 * the new event is a SCAN_RSP. We can therefore proceed with 6194 * sending a merged device found event. 6195 */ 6196 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6197 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6198 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6199 clear_pending_adv_report(hdev); 6200 } 6201 6202 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6203 struct sk_buff *skb) 6204 { 6205 struct hci_ev_le_advertising_report *ev = data; 6206 u64 instant = jiffies; 6207 6208 if (!ev->num) 6209 return; 6210 6211 hci_dev_lock(hdev); 6212 6213 while (ev->num--) { 6214 struct hci_ev_le_advertising_info *info; 6215 s8 rssi; 6216 6217 info = hci_le_ev_skb_pull(hdev, skb, 6218 HCI_EV_LE_ADVERTISING_REPORT, 6219 sizeof(*info)); 6220 if (!info) 6221 break; 6222 6223 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6224 info->length + 1)) 6225 break; 6226 6227 if (info->length <= max_adv_len(hdev)) { 6228 rssi = info->data[info->length]; 6229 process_adv_report(hdev, info->type, &info->bdaddr, 6230 info->bdaddr_type, NULL, 0, rssi, 6231 info->data, info->length, false, 6232 false, instant); 6233 } else { 6234 bt_dev_err(hdev, "Dropping invalid advertising data"); 6235 } 6236 } 6237 6238 hci_dev_unlock(hdev); 6239 } 6240 6241 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6242 { 6243 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6244 switch (evt_type) { 6245 case LE_LEGACY_ADV_IND: 6246 return LE_ADV_IND; 6247 case LE_LEGACY_ADV_DIRECT_IND: 6248 return LE_ADV_DIRECT_IND; 6249 case LE_LEGACY_ADV_SCAN_IND: 6250 return LE_ADV_SCAN_IND; 6251 case LE_LEGACY_NONCONN_IND: 6252 return LE_ADV_NONCONN_IND; 6253 case LE_LEGACY_SCAN_RSP_ADV: 6254 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6255 return LE_ADV_SCAN_RSP; 6256 } 6257 6258 goto invalid; 6259 } 6260 6261 if (evt_type & LE_EXT_ADV_CONN_IND) { 6262 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6263 return LE_ADV_DIRECT_IND; 6264 6265 return LE_ADV_IND; 6266 } 6267 6268 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6269 return LE_ADV_SCAN_RSP; 6270 6271 if (evt_type & LE_EXT_ADV_SCAN_IND) 6272 return LE_ADV_SCAN_IND; 6273 6274 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6275 evt_type & LE_EXT_ADV_DIRECT_IND) 6276 return LE_ADV_NONCONN_IND; 6277 6278 invalid: 6279 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6280 evt_type); 6281 6282 return LE_ADV_INVALID; 6283 } 6284 6285 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6286 struct sk_buff *skb) 6287 { 6288 struct hci_ev_le_ext_adv_report *ev = data; 6289 u64 instant = jiffies; 6290 6291 if (!ev->num) 6292 return; 6293 6294 hci_dev_lock(hdev); 6295 6296 while (ev->num--) { 6297 struct hci_ev_le_ext_adv_info *info; 6298 u8 legacy_evt_type; 6299 u16 evt_type; 6300 6301 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6302 sizeof(*info)); 6303 if (!info) 6304 break; 6305 6306 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6307 info->length)) 6308 break; 6309 6310 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6311 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6312 if (legacy_evt_type != LE_ADV_INVALID) { 6313 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6314 info->bdaddr_type, NULL, 0, 6315 info->rssi, info->data, info->length, 6316 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6317 false, instant); 6318 } 6319 } 6320 6321 hci_dev_unlock(hdev); 6322 } 6323 6324 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6325 { 6326 struct hci_cp_le_pa_term_sync cp; 6327 6328 memset(&cp, 0, sizeof(cp)); 6329 cp.handle = handle; 6330 6331 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6332 } 6333 6334 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6335 struct sk_buff *skb) 6336 { 6337 struct hci_ev_le_pa_sync_established *ev = data; 6338 int mask = hdev->link_mode; 6339 __u8 flags = 0; 6340 struct hci_conn *pa_sync; 6341 6342 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6343 6344 hci_dev_lock(hdev); 6345 6346 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6347 6348 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6349 if (!(mask & HCI_LM_ACCEPT)) { 6350 hci_le_pa_term_sync(hdev, ev->handle); 6351 goto unlock; 6352 } 6353 6354 if (!(flags & HCI_PROTO_DEFER)) 6355 goto unlock; 6356 6357 if (ev->status) { 6358 /* Add connection to indicate the failed PA sync event */ 6359 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 6360 HCI_ROLE_SLAVE); 6361 6362 if (!pa_sync) 6363 goto unlock; 6364 6365 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6366 6367 /* Notify iso layer */ 6368 hci_connect_cfm(pa_sync, ev->status); 6369 } 6370 6371 unlock: 6372 hci_dev_unlock(hdev); 6373 } 6374 6375 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6376 struct sk_buff *skb) 6377 { 6378 struct hci_ev_le_per_adv_report *ev = data; 6379 int mask = hdev->link_mode; 6380 __u8 flags = 0; 6381 6382 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6383 6384 hci_dev_lock(hdev); 6385 6386 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 6387 if (!(mask & HCI_LM_ACCEPT)) 6388 hci_le_pa_term_sync(hdev, ev->sync_handle); 6389 6390 hci_dev_unlock(hdev); 6391 } 6392 6393 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6394 struct sk_buff *skb) 6395 { 6396 struct hci_ev_le_remote_feat_complete *ev = data; 6397 struct hci_conn *conn; 6398 6399 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6400 6401 hci_dev_lock(hdev); 6402 6403 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6404 if (conn) { 6405 if (!ev->status) 6406 memcpy(conn->features[0], ev->features, 8); 6407 6408 if (conn->state == BT_CONFIG) { 6409 __u8 status; 6410 6411 /* If the local controller supports peripheral-initiated 6412 * features exchange, but the remote controller does 6413 * not, then it is possible that the error code 0x1a 6414 * for unsupported remote feature gets returned. 6415 * 6416 * In this specific case, allow the connection to 6417 * transition into connected state and mark it as 6418 * successful. 6419 */ 6420 if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && 6421 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6422 status = 0x00; 6423 else 6424 status = ev->status; 6425 6426 conn->state = BT_CONNECTED; 6427 hci_connect_cfm(conn, status); 6428 hci_conn_drop(conn); 6429 } 6430 } 6431 6432 hci_dev_unlock(hdev); 6433 } 6434 6435 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6436 struct sk_buff *skb) 6437 { 6438 struct hci_ev_le_ltk_req *ev = data; 6439 struct hci_cp_le_ltk_reply cp; 6440 struct hci_cp_le_ltk_neg_reply neg; 6441 struct hci_conn *conn; 6442 struct smp_ltk *ltk; 6443 6444 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6445 6446 hci_dev_lock(hdev); 6447 6448 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6449 if (conn == NULL) 6450 goto not_found; 6451 6452 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6453 if (!ltk) 6454 goto not_found; 6455 6456 if (smp_ltk_is_sc(ltk)) { 6457 /* With SC both EDiv and Rand are set to zero */ 6458 if (ev->ediv || ev->rand) 6459 goto not_found; 6460 } else { 6461 /* For non-SC keys check that EDiv and Rand match */ 6462 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6463 goto not_found; 6464 } 6465 6466 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6467 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6468 cp.handle = cpu_to_le16(conn->handle); 6469 6470 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6471 6472 conn->enc_key_size = ltk->enc_size; 6473 6474 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6475 6476 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6477 * temporary key used to encrypt a connection following 6478 * pairing. It is used during the Encrypted Session Setup to 6479 * distribute the keys. Later, security can be re-established 6480 * using a distributed LTK. 6481 */ 6482 if (ltk->type == SMP_STK) { 6483 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6484 list_del_rcu(<k->list); 6485 kfree_rcu(ltk, rcu); 6486 } else { 6487 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6488 } 6489 6490 hci_dev_unlock(hdev); 6491 6492 return; 6493 6494 not_found: 6495 neg.handle = ev->handle; 6496 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6497 hci_dev_unlock(hdev); 6498 } 6499 6500 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6501 u8 reason) 6502 { 6503 struct hci_cp_le_conn_param_req_neg_reply cp; 6504 6505 cp.handle = cpu_to_le16(handle); 6506 cp.reason = reason; 6507 6508 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6509 &cp); 6510 } 6511 6512 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6513 struct sk_buff *skb) 6514 { 6515 struct hci_ev_le_remote_conn_param_req *ev = data; 6516 struct hci_cp_le_conn_param_req_reply cp; 6517 struct hci_conn *hcon; 6518 u16 handle, min, max, latency, timeout; 6519 6520 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6521 6522 handle = le16_to_cpu(ev->handle); 6523 min = le16_to_cpu(ev->interval_min); 6524 max = le16_to_cpu(ev->interval_max); 6525 latency = le16_to_cpu(ev->latency); 6526 timeout = le16_to_cpu(ev->timeout); 6527 6528 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6529 if (!hcon || hcon->state != BT_CONNECTED) 6530 return send_conn_param_neg_reply(hdev, handle, 6531 HCI_ERROR_UNKNOWN_CONN_ID); 6532 6533 if (max > hcon->le_conn_max_interval) 6534 return send_conn_param_neg_reply(hdev, handle, 6535 HCI_ERROR_INVALID_LL_PARAMS); 6536 6537 if (hci_check_conn_params(min, max, latency, timeout)) 6538 return send_conn_param_neg_reply(hdev, handle, 6539 HCI_ERROR_INVALID_LL_PARAMS); 6540 6541 if (hcon->role == HCI_ROLE_MASTER) { 6542 struct hci_conn_params *params; 6543 u8 store_hint; 6544 6545 hci_dev_lock(hdev); 6546 6547 params = hci_conn_params_lookup(hdev, &hcon->dst, 6548 hcon->dst_type); 6549 if (params) { 6550 params->conn_min_interval = min; 6551 params->conn_max_interval = max; 6552 params->conn_latency = latency; 6553 params->supervision_timeout = timeout; 6554 store_hint = 0x01; 6555 } else { 6556 store_hint = 0x00; 6557 } 6558 6559 hci_dev_unlock(hdev); 6560 6561 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6562 store_hint, min, max, latency, timeout); 6563 } 6564 6565 cp.handle = ev->handle; 6566 cp.interval_min = ev->interval_min; 6567 cp.interval_max = ev->interval_max; 6568 cp.latency = ev->latency; 6569 cp.timeout = ev->timeout; 6570 cp.min_ce_len = 0; 6571 cp.max_ce_len = 0; 6572 6573 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6574 } 6575 6576 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6577 struct sk_buff *skb) 6578 { 6579 struct hci_ev_le_direct_adv_report *ev = data; 6580 u64 instant = jiffies; 6581 int i; 6582 6583 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6584 flex_array_size(ev, info, ev->num))) 6585 return; 6586 6587 if (!ev->num) 6588 return; 6589 6590 hci_dev_lock(hdev); 6591 6592 for (i = 0; i < ev->num; i++) { 6593 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6594 6595 process_adv_report(hdev, info->type, &info->bdaddr, 6596 info->bdaddr_type, &info->direct_addr, 6597 info->direct_addr_type, info->rssi, NULL, 0, 6598 false, false, instant); 6599 } 6600 6601 hci_dev_unlock(hdev); 6602 } 6603 6604 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6605 struct sk_buff *skb) 6606 { 6607 struct hci_ev_le_phy_update_complete *ev = data; 6608 struct hci_conn *conn; 6609 6610 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6611 6612 if (ev->status) 6613 return; 6614 6615 hci_dev_lock(hdev); 6616 6617 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6618 if (!conn) 6619 goto unlock; 6620 6621 conn->le_tx_phy = ev->tx_phy; 6622 conn->le_rx_phy = ev->rx_phy; 6623 6624 unlock: 6625 hci_dev_unlock(hdev); 6626 } 6627 6628 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6629 struct sk_buff *skb) 6630 { 6631 struct hci_evt_le_cis_established *ev = data; 6632 struct hci_conn *conn; 6633 struct bt_iso_qos *qos; 6634 bool pending = false; 6635 u16 handle = __le16_to_cpu(ev->handle); 6636 u32 c_sdu_interval, p_sdu_interval; 6637 6638 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6639 6640 hci_dev_lock(hdev); 6641 6642 conn = hci_conn_hash_lookup_handle(hdev, handle); 6643 if (!conn) { 6644 bt_dev_err(hdev, 6645 "Unable to find connection with handle 0x%4.4x", 6646 handle); 6647 goto unlock; 6648 } 6649 6650 if (conn->type != ISO_LINK) { 6651 bt_dev_err(hdev, 6652 "Invalid connection link type handle 0x%4.4x", 6653 handle); 6654 goto unlock; 6655 } 6656 6657 qos = &conn->iso_qos; 6658 6659 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6660 6661 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 6, Part G 6662 * page 3075: 6663 * Transport_Latency_C_To_P = CIG_Sync_Delay + (FT_C_To_P) × 6664 * ISO_Interval + SDU_Interval_C_To_P 6665 * ... 6666 * SDU_Interval = (CIG_Sync_Delay + (FT) x ISO_Interval) - 6667 * Transport_Latency 6668 */ 6669 c_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6670 (ev->c_ft * le16_to_cpu(ev->interval) * 1250)) - 6671 get_unaligned_le24(ev->c_latency); 6672 p_sdu_interval = (get_unaligned_le24(ev->cig_sync_delay) + 6673 (ev->p_ft * le16_to_cpu(ev->interval) * 1250)) - 6674 get_unaligned_le24(ev->p_latency); 6675 6676 switch (conn->role) { 6677 case HCI_ROLE_SLAVE: 6678 qos->ucast.in.interval = c_sdu_interval; 6679 qos->ucast.out.interval = p_sdu_interval; 6680 /* Convert Transport Latency (us) to Latency (msec) */ 6681 qos->ucast.in.latency = 6682 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6683 1000); 6684 qos->ucast.out.latency = 6685 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6686 1000); 6687 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6688 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6689 qos->ucast.in.phy = ev->c_phy; 6690 qos->ucast.out.phy = ev->p_phy; 6691 break; 6692 case HCI_ROLE_MASTER: 6693 qos->ucast.in.interval = p_sdu_interval; 6694 qos->ucast.out.interval = c_sdu_interval; 6695 /* Convert Transport Latency (us) to Latency (msec) */ 6696 qos->ucast.out.latency = 6697 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6698 1000); 6699 qos->ucast.in.latency = 6700 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6701 1000); 6702 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6703 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6704 qos->ucast.out.phy = ev->c_phy; 6705 qos->ucast.in.phy = ev->p_phy; 6706 break; 6707 } 6708 6709 if (!ev->status) { 6710 conn->state = BT_CONNECTED; 6711 hci_debugfs_create_conn(conn); 6712 hci_conn_add_sysfs(conn); 6713 hci_iso_setup_path(conn); 6714 goto unlock; 6715 } 6716 6717 conn->state = BT_CLOSED; 6718 hci_connect_cfm(conn, ev->status); 6719 hci_conn_del(conn); 6720 6721 unlock: 6722 if (pending) 6723 hci_le_create_cis_pending(hdev); 6724 6725 hci_dev_unlock(hdev); 6726 } 6727 6728 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6729 { 6730 struct hci_cp_le_reject_cis cp; 6731 6732 memset(&cp, 0, sizeof(cp)); 6733 cp.handle = handle; 6734 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6735 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6736 } 6737 6738 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6739 { 6740 struct hci_cp_le_accept_cis cp; 6741 6742 memset(&cp, 0, sizeof(cp)); 6743 cp.handle = handle; 6744 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6745 } 6746 6747 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6748 struct sk_buff *skb) 6749 { 6750 struct hci_evt_le_cis_req *ev = data; 6751 u16 acl_handle, cis_handle; 6752 struct hci_conn *acl, *cis; 6753 int mask; 6754 __u8 flags = 0; 6755 6756 acl_handle = __le16_to_cpu(ev->acl_handle); 6757 cis_handle = __le16_to_cpu(ev->cis_handle); 6758 6759 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6760 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6761 6762 hci_dev_lock(hdev); 6763 6764 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6765 if (!acl) 6766 goto unlock; 6767 6768 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 6769 if (!(mask & HCI_LM_ACCEPT)) { 6770 hci_le_reject_cis(hdev, ev->cis_handle); 6771 goto unlock; 6772 } 6773 6774 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6775 if (!cis) { 6776 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE, 6777 cis_handle); 6778 if (IS_ERR(cis)) { 6779 hci_le_reject_cis(hdev, ev->cis_handle); 6780 goto unlock; 6781 } 6782 } 6783 6784 cis->iso_qos.ucast.cig = ev->cig_id; 6785 cis->iso_qos.ucast.cis = ev->cis_id; 6786 6787 if (!(flags & HCI_PROTO_DEFER)) { 6788 hci_le_accept_cis(hdev, ev->cis_handle); 6789 } else { 6790 cis->state = BT_CONNECT2; 6791 hci_connect_cfm(cis, 0); 6792 } 6793 6794 unlock: 6795 hci_dev_unlock(hdev); 6796 } 6797 6798 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 6799 { 6800 u8 handle = PTR_UINT(data); 6801 6802 return hci_le_terminate_big_sync(hdev, handle, 6803 HCI_ERROR_LOCAL_HOST_TERM); 6804 } 6805 6806 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6807 struct sk_buff *skb) 6808 { 6809 struct hci_evt_le_create_big_complete *ev = data; 6810 struct hci_conn *conn; 6811 __u8 i = 0; 6812 6813 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6814 6815 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6816 flex_array_size(ev, bis_handle, ev->num_bis))) 6817 return; 6818 6819 hci_dev_lock(hdev); 6820 rcu_read_lock(); 6821 6822 /* Connect all BISes that are bound to the BIG */ 6823 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) { 6824 if (bacmp(&conn->dst, BDADDR_ANY) || 6825 conn->type != ISO_LINK || 6826 conn->iso_qos.bcast.big != ev->handle) 6827 continue; 6828 6829 if (hci_conn_set_handle(conn, 6830 __le16_to_cpu(ev->bis_handle[i++]))) 6831 continue; 6832 6833 if (!ev->status) { 6834 conn->state = BT_CONNECTED; 6835 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 6836 rcu_read_unlock(); 6837 hci_debugfs_create_conn(conn); 6838 hci_conn_add_sysfs(conn); 6839 hci_iso_setup_path(conn); 6840 rcu_read_lock(); 6841 continue; 6842 } 6843 6844 hci_connect_cfm(conn, ev->status); 6845 rcu_read_unlock(); 6846 hci_conn_del(conn); 6847 rcu_read_lock(); 6848 } 6849 6850 rcu_read_unlock(); 6851 6852 if (!ev->status && !i) 6853 /* If no BISes have been connected for the BIG, 6854 * terminate. This is in case all bound connections 6855 * have been closed before the BIG creation 6856 * has completed. 6857 */ 6858 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 6859 UINT_PTR(ev->handle), NULL); 6860 6861 hci_dev_unlock(hdev); 6862 } 6863 6864 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6865 struct sk_buff *skb) 6866 { 6867 struct hci_evt_le_big_sync_estabilished *ev = data; 6868 struct hci_conn *bis; 6869 struct hci_conn *pa_sync; 6870 int i; 6871 6872 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6873 6874 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 6875 flex_array_size(ev, bis, ev->num_bis))) 6876 return; 6877 6878 hci_dev_lock(hdev); 6879 6880 if (!ev->status) { 6881 pa_sync = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle); 6882 if (pa_sync) 6883 /* Also mark the BIG sync established event on the 6884 * associated PA sync hcon 6885 */ 6886 set_bit(HCI_CONN_BIG_SYNC, &pa_sync->flags); 6887 } 6888 6889 for (i = 0; i < ev->num_bis; i++) { 6890 u16 handle = le16_to_cpu(ev->bis[i]); 6891 __le32 interval; 6892 6893 bis = hci_conn_hash_lookup_handle(hdev, handle); 6894 if (!bis) { 6895 if (handle > HCI_CONN_HANDLE_MAX) { 6896 bt_dev_dbg(hdev, "ignore too large handle %u", handle); 6897 continue; 6898 } 6899 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 6900 HCI_ROLE_SLAVE, handle); 6901 if (IS_ERR(bis)) 6902 continue; 6903 } 6904 6905 if (ev->status != 0x42) 6906 /* Mark PA sync as established */ 6907 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 6908 6909 bis->iso_qos.bcast.big = ev->handle; 6910 memset(&interval, 0, sizeof(interval)); 6911 memcpy(&interval, ev->latency, sizeof(ev->latency)); 6912 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 6913 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 6914 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 6915 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 6916 6917 if (!ev->status) { 6918 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 6919 hci_iso_setup_path(bis); 6920 } 6921 } 6922 6923 /* In case BIG sync failed, notify each failed connection to 6924 * the user after all hci connections have been added 6925 */ 6926 if (ev->status) 6927 for (i = 0; i < ev->num_bis; i++) { 6928 u16 handle = le16_to_cpu(ev->bis[i]); 6929 6930 bis = hci_conn_hash_lookup_handle(hdev, handle); 6931 if (!bis) 6932 continue; 6933 6934 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 6935 hci_connect_cfm(bis, ev->status); 6936 } 6937 6938 hci_dev_unlock(hdev); 6939 } 6940 6941 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 6942 struct sk_buff *skb) 6943 { 6944 struct hci_evt_le_big_info_adv_report *ev = data; 6945 int mask = hdev->link_mode; 6946 __u8 flags = 0; 6947 struct hci_conn *pa_sync; 6948 6949 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6950 6951 hci_dev_lock(hdev); 6952 6953 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 6954 if (!(mask & HCI_LM_ACCEPT)) { 6955 hci_le_pa_term_sync(hdev, ev->sync_handle); 6956 goto unlock; 6957 } 6958 6959 if (!(flags & HCI_PROTO_DEFER)) 6960 goto unlock; 6961 6962 pa_sync = hci_conn_hash_lookup_pa_sync_handle 6963 (hdev, 6964 le16_to_cpu(ev->sync_handle)); 6965 6966 if (pa_sync) 6967 goto unlock; 6968 6969 /* Add connection to indicate the PA sync event */ 6970 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 6971 HCI_ROLE_SLAVE); 6972 6973 if (IS_ERR(pa_sync)) 6974 goto unlock; 6975 6976 pa_sync->sync_handle = le16_to_cpu(ev->sync_handle); 6977 set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags); 6978 6979 /* Notify iso layer */ 6980 hci_connect_cfm(pa_sync, 0x00); 6981 6982 /* Notify MGMT layer */ 6983 mgmt_device_connected(hdev, pa_sync, NULL, 0); 6984 6985 unlock: 6986 hci_dev_unlock(hdev); 6987 } 6988 6989 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 6990 [_op] = { \ 6991 .func = _func, \ 6992 .min_len = _min_len, \ 6993 .max_len = _max_len, \ 6994 } 6995 6996 #define HCI_LE_EV(_op, _func, _len) \ 6997 HCI_LE_EV_VL(_op, _func, _len, _len) 6998 6999 #define HCI_LE_EV_STATUS(_op, _func) \ 7000 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7001 7002 /* Entries in this table shall have their position according to the subevent 7003 * opcode they handle so the use of the macros above is recommend since it does 7004 * attempt to initialize at its proper index using Designated Initializers that 7005 * way events without a callback function can be ommited. 7006 */ 7007 static const struct hci_le_ev { 7008 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7009 u16 min_len; 7010 u16 max_len; 7011 } hci_le_ev_table[U8_MAX + 1] = { 7012 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7013 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7014 sizeof(struct hci_ev_le_conn_complete)), 7015 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7016 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7017 sizeof(struct hci_ev_le_advertising_report), 7018 HCI_MAX_EVENT_SIZE), 7019 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7020 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7021 hci_le_conn_update_complete_evt, 7022 sizeof(struct hci_ev_le_conn_update_complete)), 7023 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7024 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7025 hci_le_remote_feat_complete_evt, 7026 sizeof(struct hci_ev_le_remote_feat_complete)), 7027 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7028 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7029 sizeof(struct hci_ev_le_ltk_req)), 7030 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7031 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7032 hci_le_remote_conn_param_req_evt, 7033 sizeof(struct hci_ev_le_remote_conn_param_req)), 7034 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7035 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7036 hci_le_enh_conn_complete_evt, 7037 sizeof(struct hci_ev_le_enh_conn_complete)), 7038 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7039 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7040 sizeof(struct hci_ev_le_direct_adv_report), 7041 HCI_MAX_EVENT_SIZE), 7042 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7043 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7044 sizeof(struct hci_ev_le_phy_update_complete)), 7045 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7046 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7047 sizeof(struct hci_ev_le_ext_adv_report), 7048 HCI_MAX_EVENT_SIZE), 7049 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7050 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7051 hci_le_pa_sync_estabilished_evt, 7052 sizeof(struct hci_ev_le_pa_sync_established)), 7053 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7054 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7055 hci_le_per_adv_report_evt, 7056 sizeof(struct hci_ev_le_per_adv_report), 7057 HCI_MAX_EVENT_SIZE), 7058 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7059 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7060 sizeof(struct hci_evt_le_ext_adv_set_term)), 7061 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7062 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7063 sizeof(struct hci_evt_le_cis_established)), 7064 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7065 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7066 sizeof(struct hci_evt_le_cis_req)), 7067 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7068 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7069 hci_le_create_big_complete_evt, 7070 sizeof(struct hci_evt_le_create_big_complete), 7071 HCI_MAX_EVENT_SIZE), 7072 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7073 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7074 hci_le_big_sync_established_evt, 7075 sizeof(struct hci_evt_le_big_sync_estabilished), 7076 HCI_MAX_EVENT_SIZE), 7077 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7078 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7079 hci_le_big_info_adv_report_evt, 7080 sizeof(struct hci_evt_le_big_info_adv_report), 7081 HCI_MAX_EVENT_SIZE), 7082 }; 7083 7084 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7085 struct sk_buff *skb, u16 *opcode, u8 *status, 7086 hci_req_complete_t *req_complete, 7087 hci_req_complete_skb_t *req_complete_skb) 7088 { 7089 struct hci_ev_le_meta *ev = data; 7090 const struct hci_le_ev *subev; 7091 7092 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7093 7094 /* Only match event if command OGF is for LE */ 7095 if (hdev->req_skb && 7096 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 && 7097 hci_skb_event(hdev->req_skb) == ev->subevent) { 7098 *opcode = hci_skb_opcode(hdev->req_skb); 7099 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7100 req_complete_skb); 7101 } 7102 7103 subev = &hci_le_ev_table[ev->subevent]; 7104 if (!subev->func) 7105 return; 7106 7107 if (skb->len < subev->min_len) { 7108 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7109 ev->subevent, skb->len, subev->min_len); 7110 return; 7111 } 7112 7113 /* Just warn if the length is over max_len size it still be 7114 * possible to partially parse the event so leave to callback to 7115 * decide if that is acceptable. 7116 */ 7117 if (skb->len > subev->max_len) 7118 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7119 ev->subevent, skb->len, subev->max_len); 7120 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7121 if (!data) 7122 return; 7123 7124 subev->func(hdev, data, skb); 7125 } 7126 7127 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7128 u8 event, struct sk_buff *skb) 7129 { 7130 struct hci_ev_cmd_complete *ev; 7131 struct hci_event_hdr *hdr; 7132 7133 if (!skb) 7134 return false; 7135 7136 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7137 if (!hdr) 7138 return false; 7139 7140 if (event) { 7141 if (hdr->evt != event) 7142 return false; 7143 return true; 7144 } 7145 7146 /* Check if request ended in Command Status - no way to retrieve 7147 * any extra parameters in this case. 7148 */ 7149 if (hdr->evt == HCI_EV_CMD_STATUS) 7150 return false; 7151 7152 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7153 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7154 hdr->evt); 7155 return false; 7156 } 7157 7158 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7159 if (!ev) 7160 return false; 7161 7162 if (opcode != __le16_to_cpu(ev->opcode)) { 7163 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7164 __le16_to_cpu(ev->opcode)); 7165 return false; 7166 } 7167 7168 return true; 7169 } 7170 7171 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7172 struct sk_buff *skb) 7173 { 7174 struct hci_ev_le_advertising_info *adv; 7175 struct hci_ev_le_direct_adv_info *direct_adv; 7176 struct hci_ev_le_ext_adv_info *ext_adv; 7177 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7178 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7179 7180 hci_dev_lock(hdev); 7181 7182 /* If we are currently suspended and this is the first BT event seen, 7183 * save the wake reason associated with the event. 7184 */ 7185 if (!hdev->suspended || hdev->wake_reason) 7186 goto unlock; 7187 7188 /* Default to remote wake. Values for wake_reason are documented in the 7189 * Bluez mgmt api docs. 7190 */ 7191 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7192 7193 /* Once configured for remote wakeup, we should only wake up for 7194 * reconnections. It's useful to see which device is waking us up so 7195 * keep track of the bdaddr of the connection event that woke us up. 7196 */ 7197 if (event == HCI_EV_CONN_REQUEST) { 7198 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7199 hdev->wake_addr_type = BDADDR_BREDR; 7200 } else if (event == HCI_EV_CONN_COMPLETE) { 7201 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7202 hdev->wake_addr_type = BDADDR_BREDR; 7203 } else if (event == HCI_EV_LE_META) { 7204 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7205 u8 subevent = le_ev->subevent; 7206 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7207 u8 num_reports = *ptr; 7208 7209 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7210 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7211 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7212 num_reports) { 7213 adv = (void *)(ptr + 1); 7214 direct_adv = (void *)(ptr + 1); 7215 ext_adv = (void *)(ptr + 1); 7216 7217 switch (subevent) { 7218 case HCI_EV_LE_ADVERTISING_REPORT: 7219 bacpy(&hdev->wake_addr, &adv->bdaddr); 7220 hdev->wake_addr_type = adv->bdaddr_type; 7221 break; 7222 case HCI_EV_LE_DIRECT_ADV_REPORT: 7223 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7224 hdev->wake_addr_type = direct_adv->bdaddr_type; 7225 break; 7226 case HCI_EV_LE_EXT_ADV_REPORT: 7227 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7228 hdev->wake_addr_type = ext_adv->bdaddr_type; 7229 break; 7230 } 7231 } 7232 } else { 7233 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7234 } 7235 7236 unlock: 7237 hci_dev_unlock(hdev); 7238 } 7239 7240 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7241 [_op] = { \ 7242 .req = false, \ 7243 .func = _func, \ 7244 .min_len = _min_len, \ 7245 .max_len = _max_len, \ 7246 } 7247 7248 #define HCI_EV(_op, _func, _len) \ 7249 HCI_EV_VL(_op, _func, _len, _len) 7250 7251 #define HCI_EV_STATUS(_op, _func) \ 7252 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7253 7254 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7255 [_op] = { \ 7256 .req = true, \ 7257 .func_req = _func, \ 7258 .min_len = _min_len, \ 7259 .max_len = _max_len, \ 7260 } 7261 7262 #define HCI_EV_REQ(_op, _func, _len) \ 7263 HCI_EV_REQ_VL(_op, _func, _len, _len) 7264 7265 /* Entries in this table shall have their position according to the event opcode 7266 * they handle so the use of the macros above is recommend since it does attempt 7267 * to initialize at its proper index using Designated Initializers that way 7268 * events without a callback function don't have entered. 7269 */ 7270 static const struct hci_ev { 7271 bool req; 7272 union { 7273 void (*func)(struct hci_dev *hdev, void *data, 7274 struct sk_buff *skb); 7275 void (*func_req)(struct hci_dev *hdev, void *data, 7276 struct sk_buff *skb, u16 *opcode, u8 *status, 7277 hci_req_complete_t *req_complete, 7278 hci_req_complete_skb_t *req_complete_skb); 7279 }; 7280 u16 min_len; 7281 u16 max_len; 7282 } hci_ev_table[U8_MAX + 1] = { 7283 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7284 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7285 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7286 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7287 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7288 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7289 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7290 sizeof(struct hci_ev_conn_complete)), 7291 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7292 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7293 sizeof(struct hci_ev_conn_request)), 7294 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7295 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7296 sizeof(struct hci_ev_disconn_complete)), 7297 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7298 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7299 sizeof(struct hci_ev_auth_complete)), 7300 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7301 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7302 sizeof(struct hci_ev_remote_name)), 7303 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7304 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7305 sizeof(struct hci_ev_encrypt_change)), 7306 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7307 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7308 hci_change_link_key_complete_evt, 7309 sizeof(struct hci_ev_change_link_key_complete)), 7310 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7311 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7312 sizeof(struct hci_ev_remote_features)), 7313 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7314 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7315 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7316 /* [0x0f = HCI_EV_CMD_STATUS] */ 7317 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7318 sizeof(struct hci_ev_cmd_status)), 7319 /* [0x10 = HCI_EV_CMD_STATUS] */ 7320 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7321 sizeof(struct hci_ev_hardware_error)), 7322 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7323 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7324 sizeof(struct hci_ev_role_change)), 7325 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7326 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7327 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7328 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7329 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7330 sizeof(struct hci_ev_mode_change)), 7331 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7332 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7333 sizeof(struct hci_ev_pin_code_req)), 7334 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7335 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7336 sizeof(struct hci_ev_link_key_req)), 7337 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7338 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7339 sizeof(struct hci_ev_link_key_notify)), 7340 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7341 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7342 sizeof(struct hci_ev_clock_offset)), 7343 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7344 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7345 sizeof(struct hci_ev_pkt_type_change)), 7346 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7347 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7348 sizeof(struct hci_ev_pscan_rep_mode)), 7349 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7350 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7351 hci_inquiry_result_with_rssi_evt, 7352 sizeof(struct hci_ev_inquiry_result_rssi), 7353 HCI_MAX_EVENT_SIZE), 7354 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7355 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7356 sizeof(struct hci_ev_remote_ext_features)), 7357 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7358 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7359 sizeof(struct hci_ev_sync_conn_complete)), 7360 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7361 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7362 hci_extended_inquiry_result_evt, 7363 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7364 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7365 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7366 sizeof(struct hci_ev_key_refresh_complete)), 7367 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7368 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7369 sizeof(struct hci_ev_io_capa_request)), 7370 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7371 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7372 sizeof(struct hci_ev_io_capa_reply)), 7373 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7374 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7375 sizeof(struct hci_ev_user_confirm_req)), 7376 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7377 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7378 sizeof(struct hci_ev_user_passkey_req)), 7379 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7380 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7381 sizeof(struct hci_ev_remote_oob_data_request)), 7382 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7383 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7384 sizeof(struct hci_ev_simple_pair_complete)), 7385 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7386 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7387 sizeof(struct hci_ev_user_passkey_notify)), 7388 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7389 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7390 sizeof(struct hci_ev_keypress_notify)), 7391 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7392 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7393 sizeof(struct hci_ev_remote_host_features)), 7394 /* [0x3e = HCI_EV_LE_META] */ 7395 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7396 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7397 /* [0xff = HCI_EV_VENDOR] */ 7398 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7399 }; 7400 7401 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7402 u16 *opcode, u8 *status, 7403 hci_req_complete_t *req_complete, 7404 hci_req_complete_skb_t *req_complete_skb) 7405 { 7406 const struct hci_ev *ev = &hci_ev_table[event]; 7407 void *data; 7408 7409 if (!ev->func) 7410 return; 7411 7412 if (skb->len < ev->min_len) { 7413 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7414 event, skb->len, ev->min_len); 7415 return; 7416 } 7417 7418 /* Just warn if the length is over max_len size it still be 7419 * possible to partially parse the event so leave to callback to 7420 * decide if that is acceptable. 7421 */ 7422 if (skb->len > ev->max_len) 7423 bt_dev_warn_ratelimited(hdev, 7424 "unexpected event 0x%2.2x length: %u > %u", 7425 event, skb->len, ev->max_len); 7426 7427 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7428 if (!data) 7429 return; 7430 7431 if (ev->req) 7432 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7433 req_complete_skb); 7434 else 7435 ev->func(hdev, data, skb); 7436 } 7437 7438 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7439 { 7440 struct hci_event_hdr *hdr = (void *) skb->data; 7441 hci_req_complete_t req_complete = NULL; 7442 hci_req_complete_skb_t req_complete_skb = NULL; 7443 struct sk_buff *orig_skb = NULL; 7444 u8 status = 0, event, req_evt = 0; 7445 u16 opcode = HCI_OP_NOP; 7446 7447 if (skb->len < sizeof(*hdr)) { 7448 bt_dev_err(hdev, "Malformed HCI Event"); 7449 goto done; 7450 } 7451 7452 kfree_skb(hdev->recv_event); 7453 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7454 7455 event = hdr->evt; 7456 if (!event) { 7457 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7458 event); 7459 goto done; 7460 } 7461 7462 /* Only match event if command OGF is not for LE */ 7463 if (hdev->req_skb && 7464 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && 7465 hci_skb_event(hdev->req_skb) == event) { 7466 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), 7467 status, &req_complete, &req_complete_skb); 7468 req_evt = event; 7469 } 7470 7471 /* If it looks like we might end up having to call 7472 * req_complete_skb, store a pristine copy of the skb since the 7473 * various handlers may modify the original one through 7474 * skb_pull() calls, etc. 7475 */ 7476 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7477 event == HCI_EV_CMD_COMPLETE) 7478 orig_skb = skb_clone(skb, GFP_KERNEL); 7479 7480 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7481 7482 /* Store wake reason if we're suspended */ 7483 hci_store_wake_reason(hdev, event, skb); 7484 7485 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7486 7487 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7488 &req_complete_skb); 7489 7490 if (req_complete) { 7491 req_complete(hdev, status, opcode); 7492 } else if (req_complete_skb) { 7493 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7494 kfree_skb(orig_skb); 7495 orig_skb = NULL; 7496 } 7497 req_complete_skb(hdev, status, opcode, orig_skb); 7498 } 7499 7500 done: 7501 kfree_skb(orig_skb); 7502 kfree_skb(skb); 7503 hdev->stat.evt_rx++; 7504 } 7505