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_flow_control_mode(struct hci_dev *hdev, void *data, 917 struct sk_buff *skb) 918 { 919 struct hci_rp_read_flow_control_mode *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->flow_ctl_mode = rp->mode; 927 928 return rp->status; 929 } 930 931 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, 932 struct sk_buff *skb) 933 { 934 struct hci_rp_read_buffer_size *rp = data; 935 936 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 937 938 if (rp->status) 939 return rp->status; 940 941 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); 942 hdev->sco_mtu = rp->sco_mtu; 943 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); 944 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); 945 946 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { 947 hdev->sco_mtu = 64; 948 hdev->sco_pkts = 8; 949 } 950 951 hdev->acl_cnt = hdev->acl_pkts; 952 hdev->sco_cnt = hdev->sco_pkts; 953 954 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, 955 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); 956 957 return rp->status; 958 } 959 960 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data, 961 struct sk_buff *skb) 962 { 963 struct hci_rp_read_bd_addr *rp = data; 964 965 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 966 967 if (rp->status) 968 return rp->status; 969 970 if (test_bit(HCI_INIT, &hdev->flags)) 971 bacpy(&hdev->bdaddr, &rp->bdaddr); 972 973 if (hci_dev_test_flag(hdev, HCI_SETUP)) 974 bacpy(&hdev->setup_addr, &rp->bdaddr); 975 976 return rp->status; 977 } 978 979 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data, 980 struct sk_buff *skb) 981 { 982 struct hci_rp_read_local_pairing_opts *rp = data; 983 984 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 985 986 if (rp->status) 987 return rp->status; 988 989 if (hci_dev_test_flag(hdev, HCI_SETUP) || 990 hci_dev_test_flag(hdev, HCI_CONFIG)) { 991 hdev->pairing_opts = rp->pairing_opts; 992 hdev->max_enc_key_size = rp->max_key_size; 993 } 994 995 return rp->status; 996 } 997 998 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data, 999 struct sk_buff *skb) 1000 { 1001 struct hci_rp_read_page_scan_activity *rp = data; 1002 1003 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1004 1005 if (rp->status) 1006 return rp->status; 1007 1008 if (test_bit(HCI_INIT, &hdev->flags)) { 1009 hdev->page_scan_interval = __le16_to_cpu(rp->interval); 1010 hdev->page_scan_window = __le16_to_cpu(rp->window); 1011 } 1012 1013 return rp->status; 1014 } 1015 1016 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data, 1017 struct sk_buff *skb) 1018 { 1019 struct hci_ev_status *rp = data; 1020 struct hci_cp_write_page_scan_activity *sent; 1021 1022 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1023 1024 if (rp->status) 1025 return rp->status; 1026 1027 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); 1028 if (!sent) 1029 return rp->status; 1030 1031 hdev->page_scan_interval = __le16_to_cpu(sent->interval); 1032 hdev->page_scan_window = __le16_to_cpu(sent->window); 1033 1034 return rp->status; 1035 } 1036 1037 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data, 1038 struct sk_buff *skb) 1039 { 1040 struct hci_rp_read_page_scan_type *rp = data; 1041 1042 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1043 1044 if (rp->status) 1045 return rp->status; 1046 1047 if (test_bit(HCI_INIT, &hdev->flags)) 1048 hdev->page_scan_type = rp->type; 1049 1050 return rp->status; 1051 } 1052 1053 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data, 1054 struct sk_buff *skb) 1055 { 1056 struct hci_ev_status *rp = data; 1057 u8 *type; 1058 1059 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1060 1061 if (rp->status) 1062 return rp->status; 1063 1064 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); 1065 if (type) 1066 hdev->page_scan_type = *type; 1067 1068 return rp->status; 1069 } 1070 1071 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data, 1072 struct sk_buff *skb) 1073 { 1074 struct hci_rp_read_data_block_size *rp = data; 1075 1076 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1077 1078 if (rp->status) 1079 return rp->status; 1080 1081 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len); 1082 hdev->block_len = __le16_to_cpu(rp->block_len); 1083 hdev->num_blocks = __le16_to_cpu(rp->num_blocks); 1084 1085 hdev->block_cnt = hdev->num_blocks; 1086 1087 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu, 1088 hdev->block_cnt, hdev->block_len); 1089 1090 return rp->status; 1091 } 1092 1093 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, 1094 struct sk_buff *skb) 1095 { 1096 struct hci_rp_read_clock *rp = data; 1097 struct hci_cp_read_clock *cp; 1098 struct hci_conn *conn; 1099 1100 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1101 1102 if (rp->status) 1103 return rp->status; 1104 1105 hci_dev_lock(hdev); 1106 1107 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 1108 if (!cp) 1109 goto unlock; 1110 1111 if (cp->which == 0x00) { 1112 hdev->clock = le32_to_cpu(rp->clock); 1113 goto unlock; 1114 } 1115 1116 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1117 if (conn) { 1118 conn->clock = le32_to_cpu(rp->clock); 1119 conn->clock_accuracy = le16_to_cpu(rp->accuracy); 1120 } 1121 1122 unlock: 1123 hci_dev_unlock(hdev); 1124 return rp->status; 1125 } 1126 1127 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data, 1128 struct sk_buff *skb) 1129 { 1130 struct hci_rp_read_local_amp_info *rp = data; 1131 1132 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1133 1134 if (rp->status) 1135 return rp->status; 1136 1137 hdev->amp_status = rp->amp_status; 1138 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw); 1139 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw); 1140 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency); 1141 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu); 1142 hdev->amp_type = rp->amp_type; 1143 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap); 1144 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size); 1145 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to); 1146 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to); 1147 1148 return rp->status; 1149 } 1150 1151 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, 1152 struct sk_buff *skb) 1153 { 1154 struct hci_rp_read_inq_rsp_tx_power *rp = data; 1155 1156 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1157 1158 if (rp->status) 1159 return rp->status; 1160 1161 hdev->inq_tx_power = rp->tx_power; 1162 1163 return rp->status; 1164 } 1165 1166 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, 1167 struct sk_buff *skb) 1168 { 1169 struct hci_rp_read_def_err_data_reporting *rp = data; 1170 1171 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1172 1173 if (rp->status) 1174 return rp->status; 1175 1176 hdev->err_data_reporting = rp->err_data_reporting; 1177 1178 return rp->status; 1179 } 1180 1181 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, 1182 struct sk_buff *skb) 1183 { 1184 struct hci_ev_status *rp = data; 1185 struct hci_cp_write_def_err_data_reporting *cp; 1186 1187 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1188 1189 if (rp->status) 1190 return rp->status; 1191 1192 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); 1193 if (!cp) 1194 return rp->status; 1195 1196 hdev->err_data_reporting = cp->err_data_reporting; 1197 1198 return rp->status; 1199 } 1200 1201 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, 1202 struct sk_buff *skb) 1203 { 1204 struct hci_rp_pin_code_reply *rp = data; 1205 struct hci_cp_pin_code_reply *cp; 1206 struct hci_conn *conn; 1207 1208 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1209 1210 hci_dev_lock(hdev); 1211 1212 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1213 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); 1214 1215 if (rp->status) 1216 goto unlock; 1217 1218 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); 1219 if (!cp) 1220 goto unlock; 1221 1222 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 1223 if (conn) 1224 conn->pin_length = cp->pin_len; 1225 1226 unlock: 1227 hci_dev_unlock(hdev); 1228 return rp->status; 1229 } 1230 1231 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, 1232 struct sk_buff *skb) 1233 { 1234 struct hci_rp_pin_code_neg_reply *rp = data; 1235 1236 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1237 1238 hci_dev_lock(hdev); 1239 1240 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1241 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, 1242 rp->status); 1243 1244 hci_dev_unlock(hdev); 1245 1246 return rp->status; 1247 } 1248 1249 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, 1250 struct sk_buff *skb) 1251 { 1252 struct hci_rp_le_read_buffer_size *rp = data; 1253 1254 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1255 1256 if (rp->status) 1257 return rp->status; 1258 1259 hdev->le_mtu = __le16_to_cpu(rp->le_mtu); 1260 hdev->le_pkts = rp->le_max_pkt; 1261 1262 hdev->le_cnt = hdev->le_pkts; 1263 1264 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); 1265 1266 return rp->status; 1267 } 1268 1269 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, 1270 struct sk_buff *skb) 1271 { 1272 struct hci_rp_le_read_local_features *rp = data; 1273 1274 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1275 1276 if (rp->status) 1277 return rp->status; 1278 1279 memcpy(hdev->le_features, rp->features, 8); 1280 1281 return rp->status; 1282 } 1283 1284 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, 1285 struct sk_buff *skb) 1286 { 1287 struct hci_rp_le_read_adv_tx_power *rp = data; 1288 1289 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1290 1291 if (rp->status) 1292 return rp->status; 1293 1294 hdev->adv_tx_power = rp->tx_power; 1295 1296 return rp->status; 1297 } 1298 1299 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, 1300 struct sk_buff *skb) 1301 { 1302 struct hci_rp_user_confirm_reply *rp = data; 1303 1304 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1305 1306 hci_dev_lock(hdev); 1307 1308 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1309 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, 1310 rp->status); 1311 1312 hci_dev_unlock(hdev); 1313 1314 return rp->status; 1315 } 1316 1317 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, 1318 struct sk_buff *skb) 1319 { 1320 struct hci_rp_user_confirm_reply *rp = data; 1321 1322 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1323 1324 hci_dev_lock(hdev); 1325 1326 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1327 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, 1328 ACL_LINK, 0, rp->status); 1329 1330 hci_dev_unlock(hdev); 1331 1332 return rp->status; 1333 } 1334 1335 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, 1336 struct sk_buff *skb) 1337 { 1338 struct hci_rp_user_confirm_reply *rp = data; 1339 1340 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1341 1342 hci_dev_lock(hdev); 1343 1344 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1345 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 1346 0, rp->status); 1347 1348 hci_dev_unlock(hdev); 1349 1350 return rp->status; 1351 } 1352 1353 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, 1354 struct sk_buff *skb) 1355 { 1356 struct hci_rp_user_confirm_reply *rp = data; 1357 1358 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1359 1360 hci_dev_lock(hdev); 1361 1362 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1363 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, 1364 ACL_LINK, 0, rp->status); 1365 1366 hci_dev_unlock(hdev); 1367 1368 return rp->status; 1369 } 1370 1371 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, 1372 struct sk_buff *skb) 1373 { 1374 struct hci_rp_read_local_oob_data *rp = data; 1375 1376 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1377 1378 return rp->status; 1379 } 1380 1381 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, 1382 struct sk_buff *skb) 1383 { 1384 struct hci_rp_read_local_oob_ext_data *rp = data; 1385 1386 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1387 1388 return rp->status; 1389 } 1390 1391 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, 1392 struct sk_buff *skb) 1393 { 1394 struct hci_ev_status *rp = data; 1395 bdaddr_t *sent; 1396 1397 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1398 1399 if (rp->status) 1400 return rp->status; 1401 1402 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); 1403 if (!sent) 1404 return rp->status; 1405 1406 hci_dev_lock(hdev); 1407 1408 bacpy(&hdev->random_addr, sent); 1409 1410 if (!bacmp(&hdev->rpa, sent)) { 1411 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 1412 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, 1413 secs_to_jiffies(hdev->rpa_timeout)); 1414 } 1415 1416 hci_dev_unlock(hdev); 1417 1418 return rp->status; 1419 } 1420 1421 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, 1422 struct sk_buff *skb) 1423 { 1424 struct hci_ev_status *rp = data; 1425 struct hci_cp_le_set_default_phy *cp; 1426 1427 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1428 1429 if (rp->status) 1430 return rp->status; 1431 1432 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); 1433 if (!cp) 1434 return rp->status; 1435 1436 hci_dev_lock(hdev); 1437 1438 hdev->le_tx_def_phys = cp->tx_phys; 1439 hdev->le_rx_def_phys = cp->rx_phys; 1440 1441 hci_dev_unlock(hdev); 1442 1443 return rp->status; 1444 } 1445 1446 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, 1447 struct sk_buff *skb) 1448 { 1449 struct hci_ev_status *rp = data; 1450 struct hci_cp_le_set_adv_set_rand_addr *cp; 1451 struct adv_info *adv; 1452 1453 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1454 1455 if (rp->status) 1456 return rp->status; 1457 1458 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); 1459 /* Update only in case the adv instance since handle 0x00 shall be using 1460 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and 1461 * non-extended adverting. 1462 */ 1463 if (!cp || !cp->handle) 1464 return rp->status; 1465 1466 hci_dev_lock(hdev); 1467 1468 adv = hci_find_adv_instance(hdev, cp->handle); 1469 if (adv) { 1470 bacpy(&adv->random_addr, &cp->bdaddr); 1471 if (!bacmp(&hdev->rpa, &cp->bdaddr)) { 1472 adv->rpa_expired = false; 1473 queue_delayed_work(hdev->workqueue, 1474 &adv->rpa_expired_cb, 1475 secs_to_jiffies(hdev->rpa_timeout)); 1476 } 1477 } 1478 1479 hci_dev_unlock(hdev); 1480 1481 return rp->status; 1482 } 1483 1484 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, 1485 struct sk_buff *skb) 1486 { 1487 struct hci_ev_status *rp = data; 1488 u8 *instance; 1489 int err; 1490 1491 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1492 1493 if (rp->status) 1494 return rp->status; 1495 1496 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); 1497 if (!instance) 1498 return rp->status; 1499 1500 hci_dev_lock(hdev); 1501 1502 err = hci_remove_adv_instance(hdev, *instance); 1503 if (!err) 1504 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, 1505 *instance); 1506 1507 hci_dev_unlock(hdev); 1508 1509 return rp->status; 1510 } 1511 1512 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, 1513 struct sk_buff *skb) 1514 { 1515 struct hci_ev_status *rp = data; 1516 struct adv_info *adv, *n; 1517 int err; 1518 1519 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1520 1521 if (rp->status) 1522 return rp->status; 1523 1524 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) 1525 return rp->status; 1526 1527 hci_dev_lock(hdev); 1528 1529 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 1530 u8 instance = adv->instance; 1531 1532 err = hci_remove_adv_instance(hdev, instance); 1533 if (!err) 1534 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), 1535 hdev, instance); 1536 } 1537 1538 hci_dev_unlock(hdev); 1539 1540 return rp->status; 1541 } 1542 1543 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, 1544 struct sk_buff *skb) 1545 { 1546 struct hci_rp_le_read_transmit_power *rp = data; 1547 1548 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1549 1550 if (rp->status) 1551 return rp->status; 1552 1553 hdev->min_le_tx_power = rp->min_le_tx_power; 1554 hdev->max_le_tx_power = rp->max_le_tx_power; 1555 1556 return rp->status; 1557 } 1558 1559 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, 1560 struct sk_buff *skb) 1561 { 1562 struct hci_ev_status *rp = data; 1563 struct hci_cp_le_set_privacy_mode *cp; 1564 struct hci_conn_params *params; 1565 1566 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1567 1568 if (rp->status) 1569 return rp->status; 1570 1571 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); 1572 if (!cp) 1573 return rp->status; 1574 1575 hci_dev_lock(hdev); 1576 1577 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); 1578 if (params) 1579 WRITE_ONCE(params->privacy_mode, cp->mode); 1580 1581 hci_dev_unlock(hdev); 1582 1583 return rp->status; 1584 } 1585 1586 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, 1587 struct sk_buff *skb) 1588 { 1589 struct hci_ev_status *rp = data; 1590 __u8 *sent; 1591 1592 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1593 1594 if (rp->status) 1595 return rp->status; 1596 1597 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); 1598 if (!sent) 1599 return rp->status; 1600 1601 hci_dev_lock(hdev); 1602 1603 /* If we're doing connection initiation as peripheral. Set a 1604 * timeout in case something goes wrong. 1605 */ 1606 if (*sent) { 1607 struct hci_conn *conn; 1608 1609 hci_dev_set_flag(hdev, HCI_LE_ADV); 1610 1611 conn = hci_lookup_le_connect(hdev); 1612 if (conn) 1613 queue_delayed_work(hdev->workqueue, 1614 &conn->le_conn_timeout, 1615 conn->conn_timeout); 1616 } else { 1617 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1618 } 1619 1620 hci_dev_unlock(hdev); 1621 1622 return rp->status; 1623 } 1624 1625 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, 1626 struct sk_buff *skb) 1627 { 1628 struct hci_cp_le_set_ext_adv_enable *cp; 1629 struct hci_cp_ext_adv_set *set; 1630 struct adv_info *adv = NULL, *n; 1631 struct hci_ev_status *rp = data; 1632 1633 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1634 1635 if (rp->status) 1636 return rp->status; 1637 1638 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); 1639 if (!cp) 1640 return rp->status; 1641 1642 set = (void *)cp->data; 1643 1644 hci_dev_lock(hdev); 1645 1646 if (cp->num_of_sets) 1647 adv = hci_find_adv_instance(hdev, set->handle); 1648 1649 if (cp->enable) { 1650 struct hci_conn *conn; 1651 1652 hci_dev_set_flag(hdev, HCI_LE_ADV); 1653 1654 if (adv && !adv->periodic) 1655 adv->enabled = true; 1656 1657 conn = hci_lookup_le_connect(hdev); 1658 if (conn) 1659 queue_delayed_work(hdev->workqueue, 1660 &conn->le_conn_timeout, 1661 conn->conn_timeout); 1662 } else { 1663 if (cp->num_of_sets) { 1664 if (adv) 1665 adv->enabled = false; 1666 1667 /* If just one instance was disabled check if there are 1668 * any other instance enabled before clearing HCI_LE_ADV 1669 */ 1670 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1671 list) { 1672 if (adv->enabled) 1673 goto unlock; 1674 } 1675 } else { 1676 /* All instances shall be considered disabled */ 1677 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1678 list) 1679 adv->enabled = false; 1680 } 1681 1682 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1683 } 1684 1685 unlock: 1686 hci_dev_unlock(hdev); 1687 return rp->status; 1688 } 1689 1690 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, 1691 struct sk_buff *skb) 1692 { 1693 struct hci_cp_le_set_scan_param *cp; 1694 struct hci_ev_status *rp = data; 1695 1696 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1697 1698 if (rp->status) 1699 return rp->status; 1700 1701 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); 1702 if (!cp) 1703 return rp->status; 1704 1705 hci_dev_lock(hdev); 1706 1707 hdev->le_scan_type = cp->type; 1708 1709 hci_dev_unlock(hdev); 1710 1711 return rp->status; 1712 } 1713 1714 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, 1715 struct sk_buff *skb) 1716 { 1717 struct hci_cp_le_set_ext_scan_params *cp; 1718 struct hci_ev_status *rp = data; 1719 struct hci_cp_le_scan_phy_params *phy_param; 1720 1721 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1722 1723 if (rp->status) 1724 return rp->status; 1725 1726 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); 1727 if (!cp) 1728 return rp->status; 1729 1730 phy_param = (void *)cp->data; 1731 1732 hci_dev_lock(hdev); 1733 1734 hdev->le_scan_type = phy_param->type; 1735 1736 hci_dev_unlock(hdev); 1737 1738 return rp->status; 1739 } 1740 1741 static bool has_pending_adv_report(struct hci_dev *hdev) 1742 { 1743 struct discovery_state *d = &hdev->discovery; 1744 1745 return bacmp(&d->last_adv_addr, BDADDR_ANY); 1746 } 1747 1748 static void clear_pending_adv_report(struct hci_dev *hdev) 1749 { 1750 struct discovery_state *d = &hdev->discovery; 1751 1752 bacpy(&d->last_adv_addr, BDADDR_ANY); 1753 d->last_adv_data_len = 0; 1754 } 1755 1756 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, 1757 u8 bdaddr_type, s8 rssi, u32 flags, 1758 u8 *data, u8 len) 1759 { 1760 struct discovery_state *d = &hdev->discovery; 1761 1762 if (len > max_adv_len(hdev)) 1763 return; 1764 1765 bacpy(&d->last_adv_addr, bdaddr); 1766 d->last_adv_addr_type = bdaddr_type; 1767 d->last_adv_rssi = rssi; 1768 d->last_adv_flags = flags; 1769 memcpy(d->last_adv_data, data, len); 1770 d->last_adv_data_len = len; 1771 } 1772 1773 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) 1774 { 1775 hci_dev_lock(hdev); 1776 1777 switch (enable) { 1778 case LE_SCAN_ENABLE: 1779 hci_dev_set_flag(hdev, HCI_LE_SCAN); 1780 if (hdev->le_scan_type == LE_SCAN_ACTIVE) 1781 clear_pending_adv_report(hdev); 1782 if (hci_dev_test_flag(hdev, HCI_MESH)) 1783 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 1784 break; 1785 1786 case LE_SCAN_DISABLE: 1787 /* We do this here instead of when setting DISCOVERY_STOPPED 1788 * since the latter would potentially require waiting for 1789 * inquiry to stop too. 1790 */ 1791 if (has_pending_adv_report(hdev)) { 1792 struct discovery_state *d = &hdev->discovery; 1793 1794 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 1795 d->last_adv_addr_type, NULL, 1796 d->last_adv_rssi, d->last_adv_flags, 1797 d->last_adv_data, 1798 d->last_adv_data_len, NULL, 0, 0); 1799 } 1800 1801 /* Cancel this timer so that we don't try to disable scanning 1802 * when it's already disabled. 1803 */ 1804 cancel_delayed_work(&hdev->le_scan_disable); 1805 1806 hci_dev_clear_flag(hdev, HCI_LE_SCAN); 1807 1808 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we 1809 * interrupted scanning due to a connect request. Mark 1810 * therefore discovery as stopped. 1811 */ 1812 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) 1813 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 1814 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && 1815 hdev->discovery.state == DISCOVERY_FINDING) 1816 queue_work(hdev->workqueue, &hdev->reenable_adv_work); 1817 1818 break; 1819 1820 default: 1821 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", 1822 enable); 1823 break; 1824 } 1825 1826 hci_dev_unlock(hdev); 1827 } 1828 1829 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, 1830 struct sk_buff *skb) 1831 { 1832 struct hci_cp_le_set_scan_enable *cp; 1833 struct hci_ev_status *rp = data; 1834 1835 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1836 1837 if (rp->status) 1838 return rp->status; 1839 1840 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); 1841 if (!cp) 1842 return rp->status; 1843 1844 le_set_scan_enable_complete(hdev, cp->enable); 1845 1846 return rp->status; 1847 } 1848 1849 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, 1850 struct sk_buff *skb) 1851 { 1852 struct hci_cp_le_set_ext_scan_enable *cp; 1853 struct hci_ev_status *rp = data; 1854 1855 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1856 1857 if (rp->status) 1858 return rp->status; 1859 1860 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); 1861 if (!cp) 1862 return rp->status; 1863 1864 le_set_scan_enable_complete(hdev, cp->enable); 1865 1866 return rp->status; 1867 } 1868 1869 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, 1870 struct sk_buff *skb) 1871 { 1872 struct hci_rp_le_read_num_supported_adv_sets *rp = data; 1873 1874 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, 1875 rp->num_of_sets); 1876 1877 if (rp->status) 1878 return rp->status; 1879 1880 hdev->le_num_of_adv_sets = rp->num_of_sets; 1881 1882 return rp->status; 1883 } 1884 1885 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, 1886 struct sk_buff *skb) 1887 { 1888 struct hci_rp_le_read_accept_list_size *rp = data; 1889 1890 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 1891 1892 if (rp->status) 1893 return rp->status; 1894 1895 hdev->le_accept_list_size = rp->size; 1896 1897 return rp->status; 1898 } 1899 1900 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, 1901 struct sk_buff *skb) 1902 { 1903 struct hci_ev_status *rp = data; 1904 1905 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1906 1907 if (rp->status) 1908 return rp->status; 1909 1910 hci_dev_lock(hdev); 1911 hci_bdaddr_list_clear(&hdev->le_accept_list); 1912 hci_dev_unlock(hdev); 1913 1914 return rp->status; 1915 } 1916 1917 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, 1918 struct sk_buff *skb) 1919 { 1920 struct hci_cp_le_add_to_accept_list *sent; 1921 struct hci_ev_status *rp = data; 1922 1923 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1924 1925 if (rp->status) 1926 return rp->status; 1927 1928 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); 1929 if (!sent) 1930 return rp->status; 1931 1932 hci_dev_lock(hdev); 1933 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, 1934 sent->bdaddr_type); 1935 hci_dev_unlock(hdev); 1936 1937 return rp->status; 1938 } 1939 1940 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, 1941 struct sk_buff *skb) 1942 { 1943 struct hci_cp_le_del_from_accept_list *sent; 1944 struct hci_ev_status *rp = data; 1945 1946 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1947 1948 if (rp->status) 1949 return rp->status; 1950 1951 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); 1952 if (!sent) 1953 return rp->status; 1954 1955 hci_dev_lock(hdev); 1956 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, 1957 sent->bdaddr_type); 1958 hci_dev_unlock(hdev); 1959 1960 return rp->status; 1961 } 1962 1963 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, 1964 struct sk_buff *skb) 1965 { 1966 struct hci_rp_le_read_supported_states *rp = data; 1967 1968 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1969 1970 if (rp->status) 1971 return rp->status; 1972 1973 memcpy(hdev->le_states, rp->le_states, 8); 1974 1975 return rp->status; 1976 } 1977 1978 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, 1979 struct sk_buff *skb) 1980 { 1981 struct hci_rp_le_read_def_data_len *rp = data; 1982 1983 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1984 1985 if (rp->status) 1986 return rp->status; 1987 1988 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); 1989 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); 1990 1991 return rp->status; 1992 } 1993 1994 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, 1995 struct sk_buff *skb) 1996 { 1997 struct hci_cp_le_write_def_data_len *sent; 1998 struct hci_ev_status *rp = data; 1999 2000 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2001 2002 if (rp->status) 2003 return rp->status; 2004 2005 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); 2006 if (!sent) 2007 return rp->status; 2008 2009 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); 2010 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); 2011 2012 return rp->status; 2013 } 2014 2015 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, 2016 struct sk_buff *skb) 2017 { 2018 struct hci_cp_le_add_to_resolv_list *sent; 2019 struct hci_ev_status *rp = data; 2020 2021 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2022 2023 if (rp->status) 2024 return rp->status; 2025 2026 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); 2027 if (!sent) 2028 return rp->status; 2029 2030 hci_dev_lock(hdev); 2031 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2032 sent->bdaddr_type, sent->peer_irk, 2033 sent->local_irk); 2034 hci_dev_unlock(hdev); 2035 2036 return rp->status; 2037 } 2038 2039 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, 2040 struct sk_buff *skb) 2041 { 2042 struct hci_cp_le_del_from_resolv_list *sent; 2043 struct hci_ev_status *rp = data; 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_DEL_FROM_RESOLV_LIST); 2051 if (!sent) 2052 return rp->status; 2053 2054 hci_dev_lock(hdev); 2055 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2056 sent->bdaddr_type); 2057 hci_dev_unlock(hdev); 2058 2059 return rp->status; 2060 } 2061 2062 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, 2063 struct sk_buff *skb) 2064 { 2065 struct hci_ev_status *rp = data; 2066 2067 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2068 2069 if (rp->status) 2070 return rp->status; 2071 2072 hci_dev_lock(hdev); 2073 hci_bdaddr_list_clear(&hdev->le_resolv_list); 2074 hci_dev_unlock(hdev); 2075 2076 return rp->status; 2077 } 2078 2079 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, 2080 struct sk_buff *skb) 2081 { 2082 struct hci_rp_le_read_resolv_list_size *rp = data; 2083 2084 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 2085 2086 if (rp->status) 2087 return rp->status; 2088 2089 hdev->le_resolv_list_size = rp->size; 2090 2091 return rp->status; 2092 } 2093 2094 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, 2095 struct sk_buff *skb) 2096 { 2097 struct hci_ev_status *rp = data; 2098 __u8 *sent; 2099 2100 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2101 2102 if (rp->status) 2103 return rp->status; 2104 2105 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); 2106 if (!sent) 2107 return rp->status; 2108 2109 hci_dev_lock(hdev); 2110 2111 if (*sent) 2112 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); 2113 else 2114 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); 2115 2116 hci_dev_unlock(hdev); 2117 2118 return rp->status; 2119 } 2120 2121 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, 2122 struct sk_buff *skb) 2123 { 2124 struct hci_rp_le_read_max_data_len *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 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); 2132 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); 2133 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); 2134 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); 2135 2136 return rp->status; 2137 } 2138 2139 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, 2140 struct sk_buff *skb) 2141 { 2142 struct hci_cp_write_le_host_supported *sent; 2143 struct hci_ev_status *rp = data; 2144 2145 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2146 2147 if (rp->status) 2148 return rp->status; 2149 2150 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); 2151 if (!sent) 2152 return rp->status; 2153 2154 hci_dev_lock(hdev); 2155 2156 if (sent->le) { 2157 hdev->features[1][0] |= LMP_HOST_LE; 2158 hci_dev_set_flag(hdev, HCI_LE_ENABLED); 2159 } else { 2160 hdev->features[1][0] &= ~LMP_HOST_LE; 2161 hci_dev_clear_flag(hdev, HCI_LE_ENABLED); 2162 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 2163 } 2164 2165 if (sent->simul) 2166 hdev->features[1][0] |= LMP_HOST_LE_BREDR; 2167 else 2168 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; 2169 2170 hci_dev_unlock(hdev); 2171 2172 return rp->status; 2173 } 2174 2175 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, 2176 struct sk_buff *skb) 2177 { 2178 struct hci_cp_le_set_adv_param *cp; 2179 struct hci_ev_status *rp = data; 2180 2181 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2182 2183 if (rp->status) 2184 return rp->status; 2185 2186 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); 2187 if (!cp) 2188 return rp->status; 2189 2190 hci_dev_lock(hdev); 2191 hdev->adv_addr_type = cp->own_address_type; 2192 hci_dev_unlock(hdev); 2193 2194 return rp->status; 2195 } 2196 2197 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data, 2198 struct sk_buff *skb) 2199 { 2200 struct hci_rp_le_set_ext_adv_params *rp = data; 2201 struct hci_cp_le_set_ext_adv_params *cp; 2202 struct adv_info *adv_instance; 2203 2204 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2205 2206 if (rp->status) 2207 return rp->status; 2208 2209 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); 2210 if (!cp) 2211 return rp->status; 2212 2213 hci_dev_lock(hdev); 2214 hdev->adv_addr_type = cp->own_addr_type; 2215 if (!cp->handle) { 2216 /* Store in hdev for instance 0 */ 2217 hdev->adv_tx_power = rp->tx_power; 2218 } else { 2219 adv_instance = hci_find_adv_instance(hdev, cp->handle); 2220 if (adv_instance) 2221 adv_instance->tx_power = rp->tx_power; 2222 } 2223 /* Update adv data as tx power is known now */ 2224 hci_update_adv_data(hdev, cp->handle); 2225 2226 hci_dev_unlock(hdev); 2227 2228 return rp->status; 2229 } 2230 2231 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, 2232 struct sk_buff *skb) 2233 { 2234 struct hci_rp_read_rssi *rp = data; 2235 struct hci_conn *conn; 2236 2237 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2238 2239 if (rp->status) 2240 return rp->status; 2241 2242 hci_dev_lock(hdev); 2243 2244 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2245 if (conn) 2246 conn->rssi = rp->rssi; 2247 2248 hci_dev_unlock(hdev); 2249 2250 return rp->status; 2251 } 2252 2253 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, 2254 struct sk_buff *skb) 2255 { 2256 struct hci_cp_read_tx_power *sent; 2257 struct hci_rp_read_tx_power *rp = data; 2258 struct hci_conn *conn; 2259 2260 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2261 2262 if (rp->status) 2263 return rp->status; 2264 2265 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 2266 if (!sent) 2267 return rp->status; 2268 2269 hci_dev_lock(hdev); 2270 2271 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2272 if (!conn) 2273 goto unlock; 2274 2275 switch (sent->type) { 2276 case 0x00: 2277 conn->tx_power = rp->tx_power; 2278 break; 2279 case 0x01: 2280 conn->max_tx_power = rp->tx_power; 2281 break; 2282 } 2283 2284 unlock: 2285 hci_dev_unlock(hdev); 2286 return rp->status; 2287 } 2288 2289 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, 2290 struct sk_buff *skb) 2291 { 2292 struct hci_ev_status *rp = data; 2293 u8 *mode; 2294 2295 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2296 2297 if (rp->status) 2298 return rp->status; 2299 2300 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 2301 if (mode) 2302 hdev->ssp_debug_mode = *mode; 2303 2304 return rp->status; 2305 } 2306 2307 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 2308 { 2309 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2310 2311 if (status) 2312 return; 2313 2314 if (hci_sent_cmd_data(hdev, HCI_OP_INQUIRY)) 2315 set_bit(HCI_INQUIRY, &hdev->flags); 2316 } 2317 2318 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 2319 { 2320 struct hci_cp_create_conn *cp; 2321 struct hci_conn *conn; 2322 2323 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2324 2325 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 2326 if (!cp) 2327 return; 2328 2329 hci_dev_lock(hdev); 2330 2331 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2332 2333 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); 2334 2335 if (status) { 2336 if (conn && conn->state == BT_CONNECT) { 2337 conn->state = BT_CLOSED; 2338 hci_connect_cfm(conn, status); 2339 hci_conn_del(conn); 2340 } 2341 } else { 2342 if (!conn) { 2343 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr, 2344 HCI_ROLE_MASTER); 2345 if (!conn) 2346 bt_dev_err(hdev, "no memory for new connection"); 2347 } 2348 } 2349 2350 hci_dev_unlock(hdev); 2351 } 2352 2353 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 2354 { 2355 struct hci_cp_add_sco *cp; 2356 struct hci_conn *acl; 2357 struct hci_link *link; 2358 __u16 handle; 2359 2360 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2361 2362 if (!status) 2363 return; 2364 2365 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 2366 if (!cp) 2367 return; 2368 2369 handle = __le16_to_cpu(cp->handle); 2370 2371 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2372 2373 hci_dev_lock(hdev); 2374 2375 acl = hci_conn_hash_lookup_handle(hdev, handle); 2376 if (acl) { 2377 link = list_first_entry_or_null(&acl->link_list, 2378 struct hci_link, list); 2379 if (link && link->conn) { 2380 link->conn->state = BT_CLOSED; 2381 2382 hci_connect_cfm(link->conn, status); 2383 hci_conn_del(link->conn); 2384 } 2385 } 2386 2387 hci_dev_unlock(hdev); 2388 } 2389 2390 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 2391 { 2392 struct hci_cp_auth_requested *cp; 2393 struct hci_conn *conn; 2394 2395 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2396 2397 if (!status) 2398 return; 2399 2400 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 2401 if (!cp) 2402 return; 2403 2404 hci_dev_lock(hdev); 2405 2406 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2407 if (conn) { 2408 if (conn->state == BT_CONFIG) { 2409 hci_connect_cfm(conn, status); 2410 hci_conn_drop(conn); 2411 } 2412 } 2413 2414 hci_dev_unlock(hdev); 2415 } 2416 2417 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 2418 { 2419 struct hci_cp_set_conn_encrypt *cp; 2420 struct hci_conn *conn; 2421 2422 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2423 2424 if (!status) 2425 return; 2426 2427 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 2428 if (!cp) 2429 return; 2430 2431 hci_dev_lock(hdev); 2432 2433 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2434 if (conn) { 2435 if (conn->state == BT_CONFIG) { 2436 hci_connect_cfm(conn, status); 2437 hci_conn_drop(conn); 2438 } 2439 } 2440 2441 hci_dev_unlock(hdev); 2442 } 2443 2444 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 2445 struct hci_conn *conn) 2446 { 2447 if (conn->state != BT_CONFIG || !conn->out) 2448 return 0; 2449 2450 if (conn->pending_sec_level == BT_SECURITY_SDP) 2451 return 0; 2452 2453 /* Only request authentication for SSP connections or non-SSP 2454 * devices with sec_level MEDIUM or HIGH or if MITM protection 2455 * is requested. 2456 */ 2457 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 2458 conn->pending_sec_level != BT_SECURITY_FIPS && 2459 conn->pending_sec_level != BT_SECURITY_HIGH && 2460 conn->pending_sec_level != BT_SECURITY_MEDIUM) 2461 return 0; 2462 2463 return 1; 2464 } 2465 2466 static int hci_resolve_name(struct hci_dev *hdev, 2467 struct inquiry_entry *e) 2468 { 2469 struct hci_cp_remote_name_req cp; 2470 2471 memset(&cp, 0, sizeof(cp)); 2472 2473 bacpy(&cp.bdaddr, &e->data.bdaddr); 2474 cp.pscan_rep_mode = e->data.pscan_rep_mode; 2475 cp.pscan_mode = e->data.pscan_mode; 2476 cp.clock_offset = e->data.clock_offset; 2477 2478 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 2479 } 2480 2481 static bool hci_resolve_next_name(struct hci_dev *hdev) 2482 { 2483 struct discovery_state *discov = &hdev->discovery; 2484 struct inquiry_entry *e; 2485 2486 if (list_empty(&discov->resolve)) 2487 return false; 2488 2489 /* We should stop if we already spent too much time resolving names. */ 2490 if (time_after(jiffies, discov->name_resolve_timeout)) { 2491 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); 2492 return false; 2493 } 2494 2495 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2496 if (!e) 2497 return false; 2498 2499 if (hci_resolve_name(hdev, e) == 0) { 2500 e->name_state = NAME_PENDING; 2501 return true; 2502 } 2503 2504 return false; 2505 } 2506 2507 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2508 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2509 { 2510 struct discovery_state *discov = &hdev->discovery; 2511 struct inquiry_entry *e; 2512 2513 /* Update the mgmt connected state if necessary. Be careful with 2514 * conn objects that exist but are not (yet) connected however. 2515 * Only those in BT_CONFIG or BT_CONNECTED states can be 2516 * considered connected. 2517 */ 2518 if (conn && (conn->state == BT_CONFIG || conn->state == BT_CONNECTED)) 2519 mgmt_device_connected(hdev, conn, name, name_len); 2520 2521 if (discov->state == DISCOVERY_STOPPED) 2522 return; 2523 2524 if (discov->state == DISCOVERY_STOPPING) 2525 goto discov_complete; 2526 2527 if (discov->state != DISCOVERY_RESOLVING) 2528 return; 2529 2530 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2531 /* If the device was not found in a list of found devices names of which 2532 * are pending. there is no need to continue resolving a next name as it 2533 * will be done upon receiving another Remote Name Request Complete 2534 * Event */ 2535 if (!e) 2536 return; 2537 2538 list_del(&e->list); 2539 2540 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; 2541 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, 2542 name, name_len); 2543 2544 if (hci_resolve_next_name(hdev)) 2545 return; 2546 2547 discov_complete: 2548 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2549 } 2550 2551 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2552 { 2553 struct hci_cp_remote_name_req *cp; 2554 struct hci_conn *conn; 2555 2556 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2557 2558 /* If successful wait for the name req complete event before 2559 * checking for the need to do authentication */ 2560 if (!status) 2561 return; 2562 2563 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2564 if (!cp) 2565 return; 2566 2567 hci_dev_lock(hdev); 2568 2569 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2570 2571 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2572 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2573 2574 if (!conn) 2575 goto unlock; 2576 2577 if (!hci_outgoing_auth_needed(hdev, conn)) 2578 goto unlock; 2579 2580 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2581 struct hci_cp_auth_requested auth_cp; 2582 2583 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2584 2585 auth_cp.handle = __cpu_to_le16(conn->handle); 2586 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2587 sizeof(auth_cp), &auth_cp); 2588 } 2589 2590 unlock: 2591 hci_dev_unlock(hdev); 2592 } 2593 2594 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2595 { 2596 struct hci_cp_read_remote_features *cp; 2597 struct hci_conn *conn; 2598 2599 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2600 2601 if (!status) 2602 return; 2603 2604 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2605 if (!cp) 2606 return; 2607 2608 hci_dev_lock(hdev); 2609 2610 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2611 if (conn) { 2612 if (conn->state == BT_CONFIG) { 2613 hci_connect_cfm(conn, status); 2614 hci_conn_drop(conn); 2615 } 2616 } 2617 2618 hci_dev_unlock(hdev); 2619 } 2620 2621 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2622 { 2623 struct hci_cp_read_remote_ext_features *cp; 2624 struct hci_conn *conn; 2625 2626 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2627 2628 if (!status) 2629 return; 2630 2631 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2632 if (!cp) 2633 return; 2634 2635 hci_dev_lock(hdev); 2636 2637 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2638 if (conn) { 2639 if (conn->state == BT_CONFIG) { 2640 hci_connect_cfm(conn, status); 2641 hci_conn_drop(conn); 2642 } 2643 } 2644 2645 hci_dev_unlock(hdev); 2646 } 2647 2648 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, 2649 __u8 status) 2650 { 2651 struct hci_conn *acl; 2652 struct hci_link *link; 2653 2654 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); 2655 2656 hci_dev_lock(hdev); 2657 2658 acl = hci_conn_hash_lookup_handle(hdev, handle); 2659 if (acl) { 2660 link = list_first_entry_or_null(&acl->link_list, 2661 struct hci_link, list); 2662 if (link && link->conn) { 2663 link->conn->state = BT_CLOSED; 2664 2665 hci_connect_cfm(link->conn, status); 2666 hci_conn_del(link->conn); 2667 } 2668 } 2669 2670 hci_dev_unlock(hdev); 2671 } 2672 2673 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2674 { 2675 struct hci_cp_setup_sync_conn *cp; 2676 2677 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2678 2679 if (!status) 2680 return; 2681 2682 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2683 if (!cp) 2684 return; 2685 2686 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2687 } 2688 2689 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2690 { 2691 struct hci_cp_enhanced_setup_sync_conn *cp; 2692 2693 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2694 2695 if (!status) 2696 return; 2697 2698 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); 2699 if (!cp) 2700 return; 2701 2702 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2703 } 2704 2705 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2706 { 2707 struct hci_cp_sniff_mode *cp; 2708 struct hci_conn *conn; 2709 2710 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2711 2712 if (!status) 2713 return; 2714 2715 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2716 if (!cp) 2717 return; 2718 2719 hci_dev_lock(hdev); 2720 2721 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2722 if (conn) { 2723 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2724 2725 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2726 hci_sco_setup(conn, status); 2727 } 2728 2729 hci_dev_unlock(hdev); 2730 } 2731 2732 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2733 { 2734 struct hci_cp_exit_sniff_mode *cp; 2735 struct hci_conn *conn; 2736 2737 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2738 2739 if (!status) 2740 return; 2741 2742 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2743 if (!cp) 2744 return; 2745 2746 hci_dev_lock(hdev); 2747 2748 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2749 if (conn) { 2750 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2751 2752 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2753 hci_sco_setup(conn, status); 2754 } 2755 2756 hci_dev_unlock(hdev); 2757 } 2758 2759 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2760 { 2761 struct hci_cp_disconnect *cp; 2762 struct hci_conn_params *params; 2763 struct hci_conn *conn; 2764 bool mgmt_conn; 2765 2766 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2767 2768 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended 2769 * otherwise cleanup the connection immediately. 2770 */ 2771 if (!status && !hdev->suspended) 2772 return; 2773 2774 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2775 if (!cp) 2776 return; 2777 2778 hci_dev_lock(hdev); 2779 2780 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2781 if (!conn) 2782 goto unlock; 2783 2784 if (status) { 2785 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2786 conn->dst_type, status); 2787 2788 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 2789 hdev->cur_adv_instance = conn->adv_instance; 2790 hci_enable_advertising(hdev); 2791 } 2792 2793 /* Inform sockets conn is gone before we delete it */ 2794 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED); 2795 2796 goto done; 2797 } 2798 2799 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2800 2801 if (conn->type == ACL_LINK) { 2802 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2803 hci_remove_link_key(hdev, &conn->dst); 2804 } 2805 2806 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2807 if (params) { 2808 switch (params->auto_connect) { 2809 case HCI_AUTO_CONN_LINK_LOSS: 2810 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2811 break; 2812 fallthrough; 2813 2814 case HCI_AUTO_CONN_DIRECT: 2815 case HCI_AUTO_CONN_ALWAYS: 2816 hci_pend_le_list_del_init(params); 2817 hci_pend_le_list_add(params, &hdev->pend_le_conns); 2818 break; 2819 2820 default: 2821 break; 2822 } 2823 } 2824 2825 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2826 cp->reason, mgmt_conn); 2827 2828 hci_disconn_cfm(conn, cp->reason); 2829 2830 done: 2831 /* If the disconnection failed for any reason, the upper layer 2832 * does not retry to disconnect in current implementation. 2833 * Hence, we need to do some basic cleanup here and re-enable 2834 * advertising if necessary. 2835 */ 2836 hci_conn_del(conn); 2837 unlock: 2838 hci_dev_unlock(hdev); 2839 } 2840 2841 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2842 { 2843 /* When using controller based address resolution, then the new 2844 * address types 0x02 and 0x03 are used. These types need to be 2845 * converted back into either public address or random address type 2846 */ 2847 switch (type) { 2848 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2849 if (resolved) 2850 *resolved = true; 2851 return ADDR_LE_DEV_PUBLIC; 2852 case ADDR_LE_DEV_RANDOM_RESOLVED: 2853 if (resolved) 2854 *resolved = true; 2855 return ADDR_LE_DEV_RANDOM; 2856 } 2857 2858 if (resolved) 2859 *resolved = false; 2860 return type; 2861 } 2862 2863 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2864 u8 peer_addr_type, u8 own_address_type, 2865 u8 filter_policy) 2866 { 2867 struct hci_conn *conn; 2868 2869 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2870 peer_addr_type); 2871 if (!conn) 2872 return; 2873 2874 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2875 2876 /* Store the initiator and responder address information which 2877 * is needed for SMP. These values will not change during the 2878 * lifetime of the connection. 2879 */ 2880 conn->init_addr_type = own_address_type; 2881 if (own_address_type == ADDR_LE_DEV_RANDOM) 2882 bacpy(&conn->init_addr, &hdev->random_addr); 2883 else 2884 bacpy(&conn->init_addr, &hdev->bdaddr); 2885 2886 conn->resp_addr_type = peer_addr_type; 2887 bacpy(&conn->resp_addr, peer_addr); 2888 } 2889 2890 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2891 { 2892 struct hci_cp_le_create_conn *cp; 2893 2894 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2895 2896 /* All connection failure handling is taken care of by the 2897 * hci_conn_failed function which is triggered by the HCI 2898 * request completion callbacks used for connecting. 2899 */ 2900 if (status) 2901 return; 2902 2903 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2904 if (!cp) 2905 return; 2906 2907 hci_dev_lock(hdev); 2908 2909 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2910 cp->own_address_type, cp->filter_policy); 2911 2912 hci_dev_unlock(hdev); 2913 } 2914 2915 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2916 { 2917 struct hci_cp_le_ext_create_conn *cp; 2918 2919 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2920 2921 /* All connection failure handling is taken care of by the 2922 * hci_conn_failed function which is triggered by the HCI 2923 * request completion callbacks used for connecting. 2924 */ 2925 if (status) 2926 return; 2927 2928 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2929 if (!cp) 2930 return; 2931 2932 hci_dev_lock(hdev); 2933 2934 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2935 cp->own_addr_type, cp->filter_policy); 2936 2937 hci_dev_unlock(hdev); 2938 } 2939 2940 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2941 { 2942 struct hci_cp_le_read_remote_features *cp; 2943 struct hci_conn *conn; 2944 2945 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2946 2947 if (!status) 2948 return; 2949 2950 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2951 if (!cp) 2952 return; 2953 2954 hci_dev_lock(hdev); 2955 2956 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2957 if (conn) { 2958 if (conn->state == BT_CONFIG) { 2959 hci_connect_cfm(conn, status); 2960 hci_conn_drop(conn); 2961 } 2962 } 2963 2964 hci_dev_unlock(hdev); 2965 } 2966 2967 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2968 { 2969 struct hci_cp_le_start_enc *cp; 2970 struct hci_conn *conn; 2971 2972 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2973 2974 if (!status) 2975 return; 2976 2977 hci_dev_lock(hdev); 2978 2979 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2980 if (!cp) 2981 goto unlock; 2982 2983 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2984 if (!conn) 2985 goto unlock; 2986 2987 if (conn->state != BT_CONNECTED) 2988 goto unlock; 2989 2990 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2991 hci_conn_drop(conn); 2992 2993 unlock: 2994 hci_dev_unlock(hdev); 2995 } 2996 2997 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2998 { 2999 struct hci_cp_switch_role *cp; 3000 struct hci_conn *conn; 3001 3002 BT_DBG("%s status 0x%2.2x", hdev->name, status); 3003 3004 if (!status) 3005 return; 3006 3007 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 3008 if (!cp) 3009 return; 3010 3011 hci_dev_lock(hdev); 3012 3013 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 3014 if (conn) 3015 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 3016 3017 hci_dev_unlock(hdev); 3018 } 3019 3020 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 3021 struct sk_buff *skb) 3022 { 3023 struct hci_ev_status *ev = data; 3024 struct discovery_state *discov = &hdev->discovery; 3025 struct inquiry_entry *e; 3026 3027 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3028 3029 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 3030 return; 3031 3032 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 3033 wake_up_bit(&hdev->flags, HCI_INQUIRY); 3034 3035 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3036 return; 3037 3038 hci_dev_lock(hdev); 3039 3040 if (discov->state != DISCOVERY_FINDING) 3041 goto unlock; 3042 3043 if (list_empty(&discov->resolve)) { 3044 /* When BR/EDR inquiry is active and no LE scanning is in 3045 * progress, then change discovery state to indicate completion. 3046 * 3047 * When running LE scanning and BR/EDR inquiry simultaneously 3048 * and the LE scan already finished, then change the discovery 3049 * state to indicate completion. 3050 */ 3051 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3052 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3053 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3054 goto unlock; 3055 } 3056 3057 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 3058 if (e && hci_resolve_name(hdev, e) == 0) { 3059 e->name_state = NAME_PENDING; 3060 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 3061 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 3062 } else { 3063 /* When BR/EDR inquiry is active and no LE scanning is in 3064 * progress, then change discovery state to indicate completion. 3065 * 3066 * When running LE scanning and BR/EDR inquiry simultaneously 3067 * and the LE scan already finished, then change the discovery 3068 * state to indicate completion. 3069 */ 3070 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3071 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3072 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3073 } 3074 3075 unlock: 3076 hci_dev_unlock(hdev); 3077 } 3078 3079 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3080 struct sk_buff *skb) 3081 { 3082 struct hci_ev_inquiry_result *ev = edata; 3083 struct inquiry_data data; 3084 int i; 3085 3086 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3087 flex_array_size(ev, info, ev->num))) 3088 return; 3089 3090 bt_dev_dbg(hdev, "num %d", ev->num); 3091 3092 if (!ev->num) 3093 return; 3094 3095 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3096 return; 3097 3098 hci_dev_lock(hdev); 3099 3100 for (i = 0; i < ev->num; i++) { 3101 struct inquiry_info *info = &ev->info[i]; 3102 u32 flags; 3103 3104 bacpy(&data.bdaddr, &info->bdaddr); 3105 data.pscan_rep_mode = info->pscan_rep_mode; 3106 data.pscan_period_mode = info->pscan_period_mode; 3107 data.pscan_mode = info->pscan_mode; 3108 memcpy(data.dev_class, info->dev_class, 3); 3109 data.clock_offset = info->clock_offset; 3110 data.rssi = HCI_RSSI_INVALID; 3111 data.ssp_mode = 0x00; 3112 3113 flags = hci_inquiry_cache_update(hdev, &data, false); 3114 3115 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3116 info->dev_class, HCI_RSSI_INVALID, 3117 flags, NULL, 0, NULL, 0, 0); 3118 } 3119 3120 hci_dev_unlock(hdev); 3121 } 3122 3123 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3124 struct sk_buff *skb) 3125 { 3126 struct hci_ev_conn_complete *ev = data; 3127 struct hci_conn *conn; 3128 u8 status = ev->status; 3129 3130 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3131 3132 hci_dev_lock(hdev); 3133 3134 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3135 if (!conn) { 3136 /* In case of error status and there is no connection pending 3137 * just unlock as there is nothing to cleanup. 3138 */ 3139 if (ev->status) 3140 goto unlock; 3141 3142 /* Connection may not exist if auto-connected. Check the bredr 3143 * allowlist to see if this device is allowed to auto connect. 3144 * If link is an ACL type, create a connection class 3145 * automatically. 3146 * 3147 * Auto-connect will only occur if the event filter is 3148 * programmed with a given address. Right now, event filter is 3149 * only used during suspend. 3150 */ 3151 if (ev->link_type == ACL_LINK && 3152 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3153 &ev->bdaddr, 3154 BDADDR_BREDR)) { 3155 conn = hci_conn_add_unset(hdev, ev->link_type, 3156 &ev->bdaddr, HCI_ROLE_SLAVE); 3157 if (!conn) { 3158 bt_dev_err(hdev, "no memory for new conn"); 3159 goto unlock; 3160 } 3161 } else { 3162 if (ev->link_type != SCO_LINK) 3163 goto unlock; 3164 3165 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3166 &ev->bdaddr); 3167 if (!conn) 3168 goto unlock; 3169 3170 conn->type = SCO_LINK; 3171 } 3172 } 3173 3174 /* The HCI_Connection_Complete event is only sent once per connection. 3175 * Processing it more than once per connection can corrupt kernel memory. 3176 * 3177 * As the connection handle is set here for the first time, it indicates 3178 * whether the connection is already set up. 3179 */ 3180 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 3181 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3182 goto unlock; 3183 } 3184 3185 if (!status) { 3186 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 3187 if (status) 3188 goto done; 3189 3190 if (conn->type == ACL_LINK) { 3191 conn->state = BT_CONFIG; 3192 hci_conn_hold(conn); 3193 3194 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3195 !hci_find_link_key(hdev, &ev->bdaddr)) 3196 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3197 else 3198 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3199 } else 3200 conn->state = BT_CONNECTED; 3201 3202 hci_debugfs_create_conn(conn); 3203 hci_conn_add_sysfs(conn); 3204 3205 if (test_bit(HCI_AUTH, &hdev->flags)) 3206 set_bit(HCI_CONN_AUTH, &conn->flags); 3207 3208 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3209 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3210 3211 /* Get remote features */ 3212 if (conn->type == ACL_LINK) { 3213 struct hci_cp_read_remote_features cp; 3214 cp.handle = ev->handle; 3215 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3216 sizeof(cp), &cp); 3217 3218 hci_update_scan(hdev); 3219 } 3220 3221 /* Set packet type for incoming connection */ 3222 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3223 struct hci_cp_change_conn_ptype cp; 3224 cp.handle = ev->handle; 3225 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3226 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3227 &cp); 3228 } 3229 } 3230 3231 if (conn->type == ACL_LINK) 3232 hci_sco_setup(conn, ev->status); 3233 3234 done: 3235 if (status) { 3236 hci_conn_failed(conn, status); 3237 } else if (ev->link_type == SCO_LINK) { 3238 switch (conn->setting & SCO_AIRMODE_MASK) { 3239 case SCO_AIRMODE_CVSD: 3240 if (hdev->notify) 3241 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3242 break; 3243 } 3244 3245 hci_connect_cfm(conn, status); 3246 } 3247 3248 unlock: 3249 hci_dev_unlock(hdev); 3250 } 3251 3252 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3253 { 3254 struct hci_cp_reject_conn_req cp; 3255 3256 bacpy(&cp.bdaddr, bdaddr); 3257 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3258 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3259 } 3260 3261 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3262 struct sk_buff *skb) 3263 { 3264 struct hci_ev_conn_request *ev = data; 3265 int mask = hdev->link_mode; 3266 struct inquiry_entry *ie; 3267 struct hci_conn *conn; 3268 __u8 flags = 0; 3269 3270 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3271 3272 /* Reject incoming connection from device with same BD ADDR against 3273 * CVE-2020-26555 3274 */ 3275 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { 3276 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", 3277 &ev->bdaddr); 3278 hci_reject_conn(hdev, &ev->bdaddr); 3279 return; 3280 } 3281 3282 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3283 &flags); 3284 3285 if (!(mask & HCI_LM_ACCEPT)) { 3286 hci_reject_conn(hdev, &ev->bdaddr); 3287 return; 3288 } 3289 3290 hci_dev_lock(hdev); 3291 3292 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3293 BDADDR_BREDR)) { 3294 hci_reject_conn(hdev, &ev->bdaddr); 3295 goto unlock; 3296 } 3297 3298 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3299 * connection. These features are only touched through mgmt so 3300 * only do the checks if HCI_MGMT is set. 3301 */ 3302 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3303 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3304 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3305 BDADDR_BREDR)) { 3306 hci_reject_conn(hdev, &ev->bdaddr); 3307 goto unlock; 3308 } 3309 3310 /* Connection accepted */ 3311 3312 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3313 if (ie) 3314 memcpy(ie->data.dev_class, ev->dev_class, 3); 3315 3316 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3317 &ev->bdaddr); 3318 if (!conn) { 3319 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, 3320 HCI_ROLE_SLAVE); 3321 if (!conn) { 3322 bt_dev_err(hdev, "no memory for new connection"); 3323 goto unlock; 3324 } 3325 } 3326 3327 memcpy(conn->dev_class, ev->dev_class, 3); 3328 3329 hci_dev_unlock(hdev); 3330 3331 if (ev->link_type == ACL_LINK || 3332 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3333 struct hci_cp_accept_conn_req cp; 3334 conn->state = BT_CONNECT; 3335 3336 bacpy(&cp.bdaddr, &ev->bdaddr); 3337 3338 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3339 cp.role = 0x00; /* Become central */ 3340 else 3341 cp.role = 0x01; /* Remain peripheral */ 3342 3343 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3344 } else if (!(flags & HCI_PROTO_DEFER)) { 3345 struct hci_cp_accept_sync_conn_req cp; 3346 conn->state = BT_CONNECT; 3347 3348 bacpy(&cp.bdaddr, &ev->bdaddr); 3349 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3350 3351 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3352 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3353 cp.max_latency = cpu_to_le16(0xffff); 3354 cp.content_format = cpu_to_le16(hdev->voice_setting); 3355 cp.retrans_effort = 0xff; 3356 3357 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3358 &cp); 3359 } else { 3360 conn->state = BT_CONNECT2; 3361 hci_connect_cfm(conn, 0); 3362 } 3363 3364 return; 3365 unlock: 3366 hci_dev_unlock(hdev); 3367 } 3368 3369 static u8 hci_to_mgmt_reason(u8 err) 3370 { 3371 switch (err) { 3372 case HCI_ERROR_CONNECTION_TIMEOUT: 3373 return MGMT_DEV_DISCONN_TIMEOUT; 3374 case HCI_ERROR_REMOTE_USER_TERM: 3375 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3376 case HCI_ERROR_REMOTE_POWER_OFF: 3377 return MGMT_DEV_DISCONN_REMOTE; 3378 case HCI_ERROR_LOCAL_HOST_TERM: 3379 return MGMT_DEV_DISCONN_LOCAL_HOST; 3380 default: 3381 return MGMT_DEV_DISCONN_UNKNOWN; 3382 } 3383 } 3384 3385 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3386 struct sk_buff *skb) 3387 { 3388 struct hci_ev_disconn_complete *ev = data; 3389 u8 reason; 3390 struct hci_conn_params *params; 3391 struct hci_conn *conn; 3392 bool mgmt_connected; 3393 3394 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3395 3396 hci_dev_lock(hdev); 3397 3398 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3399 if (!conn) 3400 goto unlock; 3401 3402 if (ev->status) { 3403 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3404 conn->dst_type, ev->status); 3405 goto unlock; 3406 } 3407 3408 conn->state = BT_CLOSED; 3409 3410 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3411 3412 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3413 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3414 else 3415 reason = hci_to_mgmt_reason(ev->reason); 3416 3417 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3418 reason, mgmt_connected); 3419 3420 if (conn->type == ACL_LINK) { 3421 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3422 hci_remove_link_key(hdev, &conn->dst); 3423 3424 hci_update_scan(hdev); 3425 } 3426 3427 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 3428 if (params) { 3429 switch (params->auto_connect) { 3430 case HCI_AUTO_CONN_LINK_LOSS: 3431 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3432 break; 3433 fallthrough; 3434 3435 case HCI_AUTO_CONN_DIRECT: 3436 case HCI_AUTO_CONN_ALWAYS: 3437 hci_pend_le_list_del_init(params); 3438 hci_pend_le_list_add(params, &hdev->pend_le_conns); 3439 hci_update_passive_scan(hdev); 3440 break; 3441 3442 default: 3443 break; 3444 } 3445 } 3446 3447 hci_disconn_cfm(conn, ev->reason); 3448 3449 /* Re-enable advertising if necessary, since it might 3450 * have been disabled by the connection. From the 3451 * HCI_LE_Set_Advertise_Enable command description in 3452 * the core specification (v4.0): 3453 * "The Controller shall continue advertising until the Host 3454 * issues an LE_Set_Advertise_Enable command with 3455 * Advertising_Enable set to 0x00 (Advertising is disabled) 3456 * or until a connection is created or until the Advertising 3457 * is timed out due to Directed Advertising." 3458 */ 3459 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3460 hdev->cur_adv_instance = conn->adv_instance; 3461 hci_enable_advertising(hdev); 3462 } 3463 3464 hci_conn_del(conn); 3465 3466 unlock: 3467 hci_dev_unlock(hdev); 3468 } 3469 3470 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3471 struct sk_buff *skb) 3472 { 3473 struct hci_ev_auth_complete *ev = data; 3474 struct hci_conn *conn; 3475 3476 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3477 3478 hci_dev_lock(hdev); 3479 3480 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3481 if (!conn) 3482 goto unlock; 3483 3484 if (!ev->status) { 3485 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3486 set_bit(HCI_CONN_AUTH, &conn->flags); 3487 conn->sec_level = conn->pending_sec_level; 3488 } else { 3489 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3490 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3491 3492 mgmt_auth_failed(conn, ev->status); 3493 } 3494 3495 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3496 3497 if (conn->state == BT_CONFIG) { 3498 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3499 struct hci_cp_set_conn_encrypt cp; 3500 cp.handle = ev->handle; 3501 cp.encrypt = 0x01; 3502 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3503 &cp); 3504 } else { 3505 conn->state = BT_CONNECTED; 3506 hci_connect_cfm(conn, ev->status); 3507 hci_conn_drop(conn); 3508 } 3509 } else { 3510 hci_auth_cfm(conn, ev->status); 3511 3512 hci_conn_hold(conn); 3513 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3514 hci_conn_drop(conn); 3515 } 3516 3517 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3518 if (!ev->status) { 3519 struct hci_cp_set_conn_encrypt cp; 3520 cp.handle = ev->handle; 3521 cp.encrypt = 0x01; 3522 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3523 &cp); 3524 } else { 3525 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3526 hci_encrypt_cfm(conn, ev->status); 3527 } 3528 } 3529 3530 unlock: 3531 hci_dev_unlock(hdev); 3532 } 3533 3534 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3535 struct sk_buff *skb) 3536 { 3537 struct hci_ev_remote_name *ev = data; 3538 struct hci_conn *conn; 3539 3540 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3541 3542 hci_dev_lock(hdev); 3543 3544 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3545 3546 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3547 goto check_auth; 3548 3549 if (ev->status == 0) 3550 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3551 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3552 else 3553 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3554 3555 check_auth: 3556 if (!conn) 3557 goto unlock; 3558 3559 if (!hci_outgoing_auth_needed(hdev, conn)) 3560 goto unlock; 3561 3562 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3563 struct hci_cp_auth_requested cp; 3564 3565 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3566 3567 cp.handle = __cpu_to_le16(conn->handle); 3568 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3569 } 3570 3571 unlock: 3572 hci_dev_unlock(hdev); 3573 } 3574 3575 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3576 struct sk_buff *skb) 3577 { 3578 struct hci_ev_encrypt_change *ev = data; 3579 struct hci_conn *conn; 3580 3581 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3582 3583 hci_dev_lock(hdev); 3584 3585 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3586 if (!conn) 3587 goto unlock; 3588 3589 if (!ev->status) { 3590 if (ev->encrypt) { 3591 /* Encryption implies authentication */ 3592 set_bit(HCI_CONN_AUTH, &conn->flags); 3593 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3594 conn->sec_level = conn->pending_sec_level; 3595 3596 /* P-256 authentication key implies FIPS */ 3597 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3598 set_bit(HCI_CONN_FIPS, &conn->flags); 3599 3600 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3601 conn->type == LE_LINK) 3602 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3603 } else { 3604 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3605 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3606 } 3607 } 3608 3609 /* We should disregard the current RPA and generate a new one 3610 * whenever the encryption procedure fails. 3611 */ 3612 if (ev->status && conn->type == LE_LINK) { 3613 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3614 hci_adv_instances_set_rpa_expired(hdev, true); 3615 } 3616 3617 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3618 3619 /* Check link security requirements are met */ 3620 if (!hci_conn_check_link_mode(conn)) 3621 ev->status = HCI_ERROR_AUTH_FAILURE; 3622 3623 if (ev->status && conn->state == BT_CONNECTED) { 3624 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3625 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3626 3627 /* Notify upper layers so they can cleanup before 3628 * disconnecting. 3629 */ 3630 hci_encrypt_cfm(conn, ev->status); 3631 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3632 hci_conn_drop(conn); 3633 goto unlock; 3634 } 3635 3636 /* Try reading the encryption key size for encrypted ACL links */ 3637 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3638 struct hci_cp_read_enc_key_size cp; 3639 3640 /* Only send HCI_Read_Encryption_Key_Size if the 3641 * controller really supports it. If it doesn't, assume 3642 * the default size (16). 3643 */ 3644 if (!(hdev->commands[20] & 0x10) || 3645 test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks)) { 3646 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3647 goto notify; 3648 } 3649 3650 cp.handle = cpu_to_le16(conn->handle); 3651 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3652 sizeof(cp), &cp)) { 3653 bt_dev_err(hdev, "sending read key size failed"); 3654 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3655 goto notify; 3656 } 3657 3658 goto unlock; 3659 } 3660 3661 /* Set the default Authenticated Payload Timeout after 3662 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3663 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3664 * sent when the link is active and Encryption is enabled, the conn 3665 * type can be either LE or ACL and controller must support LMP Ping. 3666 * Ensure for AES-CCM encryption as well. 3667 */ 3668 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3669 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3670 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3671 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3672 struct hci_cp_write_auth_payload_to cp; 3673 3674 cp.handle = cpu_to_le16(conn->handle); 3675 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3676 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3677 sizeof(cp), &cp)) 3678 bt_dev_err(hdev, "write auth payload timeout failed"); 3679 } 3680 3681 notify: 3682 hci_encrypt_cfm(conn, ev->status); 3683 3684 unlock: 3685 hci_dev_unlock(hdev); 3686 } 3687 3688 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3689 struct sk_buff *skb) 3690 { 3691 struct hci_ev_change_link_key_complete *ev = data; 3692 struct hci_conn *conn; 3693 3694 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3695 3696 hci_dev_lock(hdev); 3697 3698 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3699 if (conn) { 3700 if (!ev->status) 3701 set_bit(HCI_CONN_SECURE, &conn->flags); 3702 3703 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3704 3705 hci_key_change_cfm(conn, ev->status); 3706 } 3707 3708 hci_dev_unlock(hdev); 3709 } 3710 3711 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3712 struct sk_buff *skb) 3713 { 3714 struct hci_ev_remote_features *ev = data; 3715 struct hci_conn *conn; 3716 3717 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3718 3719 hci_dev_lock(hdev); 3720 3721 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3722 if (!conn) 3723 goto unlock; 3724 3725 if (!ev->status) 3726 memcpy(conn->features[0], ev->features, 8); 3727 3728 if (conn->state != BT_CONFIG) 3729 goto unlock; 3730 3731 if (!ev->status && lmp_ext_feat_capable(hdev) && 3732 lmp_ext_feat_capable(conn)) { 3733 struct hci_cp_read_remote_ext_features cp; 3734 cp.handle = ev->handle; 3735 cp.page = 0x01; 3736 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3737 sizeof(cp), &cp); 3738 goto unlock; 3739 } 3740 3741 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 3742 struct hci_cp_remote_name_req cp; 3743 memset(&cp, 0, sizeof(cp)); 3744 bacpy(&cp.bdaddr, &conn->dst); 3745 cp.pscan_rep_mode = 0x02; 3746 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3747 } else { 3748 mgmt_device_connected(hdev, conn, NULL, 0); 3749 } 3750 3751 if (!hci_outgoing_auth_needed(hdev, conn)) { 3752 conn->state = BT_CONNECTED; 3753 hci_connect_cfm(conn, ev->status); 3754 hci_conn_drop(conn); 3755 } 3756 3757 unlock: 3758 hci_dev_unlock(hdev); 3759 } 3760 3761 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3762 { 3763 cancel_delayed_work(&hdev->cmd_timer); 3764 3765 rcu_read_lock(); 3766 if (!test_bit(HCI_RESET, &hdev->flags)) { 3767 if (ncmd) { 3768 cancel_delayed_work(&hdev->ncmd_timer); 3769 atomic_set(&hdev->cmd_cnt, 1); 3770 } else { 3771 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3772 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3773 HCI_NCMD_TIMEOUT); 3774 } 3775 } 3776 rcu_read_unlock(); 3777 } 3778 3779 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3780 struct sk_buff *skb) 3781 { 3782 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3783 3784 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3785 3786 if (rp->status) 3787 return rp->status; 3788 3789 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3790 hdev->le_pkts = rp->acl_max_pkt; 3791 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3792 hdev->iso_pkts = rp->iso_max_pkt; 3793 3794 hdev->le_cnt = hdev->le_pkts; 3795 hdev->iso_cnt = hdev->iso_pkts; 3796 3797 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3798 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3799 3800 return rp->status; 3801 } 3802 3803 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3804 { 3805 struct hci_conn *conn, *tmp; 3806 3807 lockdep_assert_held(&hdev->lock); 3808 3809 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3810 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) || 3811 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3812 continue; 3813 3814 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3815 hci_conn_failed(conn, status); 3816 } 3817 } 3818 3819 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3820 struct sk_buff *skb) 3821 { 3822 struct hci_rp_le_set_cig_params *rp = data; 3823 struct hci_cp_le_set_cig_params *cp; 3824 struct hci_conn *conn; 3825 u8 status = rp->status; 3826 bool pending = false; 3827 int i; 3828 3829 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3830 3831 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3832 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3833 rp->cig_id != cp->cig_id)) { 3834 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3835 status = HCI_ERROR_UNSPECIFIED; 3836 } 3837 3838 hci_dev_lock(hdev); 3839 3840 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3841 * 3842 * If the Status return parameter is non-zero, then the state of the CIG 3843 * and its CIS configurations shall not be changed by the command. If 3844 * the CIG did not already exist, it shall not be created. 3845 */ 3846 if (status) { 3847 /* Keep current configuration, fail only the unbound CIS */ 3848 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3849 goto unlock; 3850 } 3851 3852 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3853 * 3854 * If the Status return parameter is zero, then the Controller shall 3855 * set the Connection_Handle arrayed return parameter to the connection 3856 * handle(s) corresponding to the CIS configurations specified in 3857 * the CIS_IDs command parameter, in the same order. 3858 */ 3859 for (i = 0; i < rp->num_handles; ++i) { 3860 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3861 cp->cis[i].cis_id); 3862 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3863 continue; 3864 3865 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3866 continue; 3867 3868 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3869 continue; 3870 3871 if (conn->state == BT_CONNECT) 3872 pending = true; 3873 } 3874 3875 unlock: 3876 if (pending) 3877 hci_le_create_cis_pending(hdev); 3878 3879 hci_dev_unlock(hdev); 3880 3881 return rp->status; 3882 } 3883 3884 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3885 struct sk_buff *skb) 3886 { 3887 struct hci_rp_le_setup_iso_path *rp = data; 3888 struct hci_cp_le_setup_iso_path *cp; 3889 struct hci_conn *conn; 3890 3891 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3892 3893 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3894 if (!cp) 3895 return rp->status; 3896 3897 hci_dev_lock(hdev); 3898 3899 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3900 if (!conn) 3901 goto unlock; 3902 3903 if (rp->status) { 3904 hci_connect_cfm(conn, rp->status); 3905 hci_conn_del(conn); 3906 goto unlock; 3907 } 3908 3909 switch (cp->direction) { 3910 /* Input (Host to Controller) */ 3911 case 0x00: 3912 /* Only confirm connection if output only */ 3913 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3914 hci_connect_cfm(conn, rp->status); 3915 break; 3916 /* Output (Controller to Host) */ 3917 case 0x01: 3918 /* Confirm connection since conn->iso_qos is always configured 3919 * last. 3920 */ 3921 hci_connect_cfm(conn, rp->status); 3922 3923 /* Notify device connected in case it is a BIG Sync */ 3924 if (!rp->status && test_bit(HCI_CONN_BIG_SYNC, &conn->flags)) 3925 mgmt_device_connected(hdev, conn, NULL, 0); 3926 3927 break; 3928 } 3929 3930 unlock: 3931 hci_dev_unlock(hdev); 3932 return rp->status; 3933 } 3934 3935 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3936 { 3937 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3938 } 3939 3940 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3941 struct sk_buff *skb) 3942 { 3943 struct hci_ev_status *rp = data; 3944 struct hci_cp_le_set_per_adv_params *cp; 3945 3946 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3947 3948 if (rp->status) 3949 return rp->status; 3950 3951 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3952 if (!cp) 3953 return rp->status; 3954 3955 /* TODO: set the conn state */ 3956 return rp->status; 3957 } 3958 3959 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3960 struct sk_buff *skb) 3961 { 3962 struct hci_ev_status *rp = data; 3963 struct hci_cp_le_set_per_adv_enable *cp; 3964 struct adv_info *adv = NULL, *n; 3965 u8 per_adv_cnt = 0; 3966 3967 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3968 3969 if (rp->status) 3970 return rp->status; 3971 3972 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3973 if (!cp) 3974 return rp->status; 3975 3976 hci_dev_lock(hdev); 3977 3978 adv = hci_find_adv_instance(hdev, cp->handle); 3979 3980 if (cp->enable) { 3981 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3982 3983 if (adv) 3984 adv->enabled = true; 3985 } else { 3986 /* If just one instance was disabled check if there are 3987 * any other instance enabled before clearing HCI_LE_PER_ADV. 3988 * The current periodic adv instance will be marked as 3989 * disabled once extended advertising is also disabled. 3990 */ 3991 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 3992 list) { 3993 if (adv->periodic && adv->enabled) 3994 per_adv_cnt++; 3995 } 3996 3997 if (per_adv_cnt > 1) 3998 goto unlock; 3999 4000 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 4001 } 4002 4003 unlock: 4004 hci_dev_unlock(hdev); 4005 4006 return rp->status; 4007 } 4008 4009 #define HCI_CC_VL(_op, _func, _min, _max) \ 4010 { \ 4011 .op = _op, \ 4012 .func = _func, \ 4013 .min_len = _min, \ 4014 .max_len = _max, \ 4015 } 4016 4017 #define HCI_CC(_op, _func, _len) \ 4018 HCI_CC_VL(_op, _func, _len, _len) 4019 4020 #define HCI_CC_STATUS(_op, _func) \ 4021 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 4022 4023 static const struct hci_cc { 4024 u16 op; 4025 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 4026 u16 min_len; 4027 u16 max_len; 4028 } hci_cc_table[] = { 4029 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 4030 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 4031 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 4032 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 4033 hci_cc_remote_name_req_cancel), 4034 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 4035 sizeof(struct hci_rp_role_discovery)), 4036 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 4037 sizeof(struct hci_rp_read_link_policy)), 4038 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4039 sizeof(struct hci_rp_write_link_policy)), 4040 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4041 sizeof(struct hci_rp_read_def_link_policy)), 4042 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4043 hci_cc_write_def_link_policy), 4044 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4045 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4046 sizeof(struct hci_rp_read_stored_link_key)), 4047 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4048 sizeof(struct hci_rp_delete_stored_link_key)), 4049 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4050 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4051 sizeof(struct hci_rp_read_local_name)), 4052 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4053 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4054 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4055 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4056 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4057 sizeof(struct hci_rp_read_class_of_dev)), 4058 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4059 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4060 sizeof(struct hci_rp_read_voice_setting)), 4061 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4062 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4063 sizeof(struct hci_rp_read_num_supported_iac)), 4064 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4065 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4066 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4067 sizeof(struct hci_rp_read_auth_payload_to)), 4068 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4069 sizeof(struct hci_rp_write_auth_payload_to)), 4070 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4071 sizeof(struct hci_rp_read_local_version)), 4072 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4073 sizeof(struct hci_rp_read_local_commands)), 4074 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4075 sizeof(struct hci_rp_read_local_features)), 4076 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4077 sizeof(struct hci_rp_read_local_ext_features)), 4078 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4079 sizeof(struct hci_rp_read_buffer_size)), 4080 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4081 sizeof(struct hci_rp_read_bd_addr)), 4082 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4083 sizeof(struct hci_rp_read_local_pairing_opts)), 4084 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4085 sizeof(struct hci_rp_read_page_scan_activity)), 4086 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4087 hci_cc_write_page_scan_activity), 4088 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4089 sizeof(struct hci_rp_read_page_scan_type)), 4090 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4091 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size, 4092 sizeof(struct hci_rp_read_data_block_size)), 4093 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode, 4094 sizeof(struct hci_rp_read_flow_control_mode)), 4095 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info, 4096 sizeof(struct hci_rp_read_local_amp_info)), 4097 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4098 sizeof(struct hci_rp_read_clock)), 4099 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4100 sizeof(struct hci_rp_read_enc_key_size)), 4101 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4102 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4103 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4104 hci_cc_read_def_err_data_reporting, 4105 sizeof(struct hci_rp_read_def_err_data_reporting)), 4106 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4107 hci_cc_write_def_err_data_reporting), 4108 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4109 sizeof(struct hci_rp_pin_code_reply)), 4110 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4111 sizeof(struct hci_rp_pin_code_neg_reply)), 4112 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4113 sizeof(struct hci_rp_read_local_oob_data)), 4114 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4115 sizeof(struct hci_rp_read_local_oob_ext_data)), 4116 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4117 sizeof(struct hci_rp_le_read_buffer_size)), 4118 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4119 sizeof(struct hci_rp_le_read_local_features)), 4120 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4121 sizeof(struct hci_rp_le_read_adv_tx_power)), 4122 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4123 sizeof(struct hci_rp_user_confirm_reply)), 4124 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4125 sizeof(struct hci_rp_user_confirm_reply)), 4126 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4127 sizeof(struct hci_rp_user_confirm_reply)), 4128 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4129 sizeof(struct hci_rp_user_confirm_reply)), 4130 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4131 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4132 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4133 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4134 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4135 hci_cc_le_read_accept_list_size, 4136 sizeof(struct hci_rp_le_read_accept_list_size)), 4137 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4138 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4139 hci_cc_le_add_to_accept_list), 4140 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4141 hci_cc_le_del_from_accept_list), 4142 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4143 sizeof(struct hci_rp_le_read_supported_states)), 4144 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4145 sizeof(struct hci_rp_le_read_def_data_len)), 4146 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4147 hci_cc_le_write_def_data_len), 4148 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4149 hci_cc_le_add_to_resolv_list), 4150 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4151 hci_cc_le_del_from_resolv_list), 4152 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4153 hci_cc_le_clear_resolv_list), 4154 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4155 sizeof(struct hci_rp_le_read_resolv_list_size)), 4156 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4157 hci_cc_le_set_addr_resolution_enable), 4158 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4159 sizeof(struct hci_rp_le_read_max_data_len)), 4160 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4161 hci_cc_write_le_host_supported), 4162 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4163 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4164 sizeof(struct hci_rp_read_rssi)), 4165 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4166 sizeof(struct hci_rp_read_tx_power)), 4167 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4168 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4169 hci_cc_le_set_ext_scan_param), 4170 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4171 hci_cc_le_set_ext_scan_enable), 4172 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4173 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4174 hci_cc_le_read_num_adv_sets, 4175 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4176 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4177 sizeof(struct hci_rp_le_set_ext_adv_params)), 4178 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4179 hci_cc_le_set_ext_adv_enable), 4180 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4181 hci_cc_le_set_adv_set_random_addr), 4182 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4183 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4184 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4185 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4186 hci_cc_le_set_per_adv_enable), 4187 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4188 sizeof(struct hci_rp_le_read_transmit_power)), 4189 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4190 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4191 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4192 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4193 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4194 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4195 sizeof(struct hci_rp_le_setup_iso_path)), 4196 }; 4197 4198 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4199 struct sk_buff *skb) 4200 { 4201 void *data; 4202 4203 if (skb->len < cc->min_len) { 4204 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4205 cc->op, skb->len, cc->min_len); 4206 return HCI_ERROR_UNSPECIFIED; 4207 } 4208 4209 /* Just warn if the length is over max_len size it still be possible to 4210 * partially parse the cc so leave to callback to decide if that is 4211 * acceptable. 4212 */ 4213 if (skb->len > cc->max_len) 4214 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4215 cc->op, skb->len, cc->max_len); 4216 4217 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4218 if (!data) 4219 return HCI_ERROR_UNSPECIFIED; 4220 4221 return cc->func(hdev, data, skb); 4222 } 4223 4224 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4225 struct sk_buff *skb, u16 *opcode, u8 *status, 4226 hci_req_complete_t *req_complete, 4227 hci_req_complete_skb_t *req_complete_skb) 4228 { 4229 struct hci_ev_cmd_complete *ev = data; 4230 int i; 4231 4232 *opcode = __le16_to_cpu(ev->opcode); 4233 4234 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4235 4236 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4237 if (hci_cc_table[i].op == *opcode) { 4238 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4239 break; 4240 } 4241 } 4242 4243 if (i == ARRAY_SIZE(hci_cc_table)) { 4244 /* Unknown opcode, assume byte 0 contains the status, so 4245 * that e.g. __hci_cmd_sync() properly returns errors 4246 * for vendor specific commands send by HCI drivers. 4247 * If a vendor doesn't actually follow this convention we may 4248 * need to introduce a vendor CC table in order to properly set 4249 * the status. 4250 */ 4251 *status = skb->data[0]; 4252 } 4253 4254 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4255 4256 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4257 req_complete_skb); 4258 4259 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4260 bt_dev_err(hdev, 4261 "unexpected event for opcode 0x%4.4x", *opcode); 4262 return; 4263 } 4264 4265 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4266 queue_work(hdev->workqueue, &hdev->cmd_work); 4267 } 4268 4269 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4270 { 4271 struct hci_cp_le_create_cis *cp; 4272 bool pending = false; 4273 int i; 4274 4275 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4276 4277 if (!status) 4278 return; 4279 4280 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4281 if (!cp) 4282 return; 4283 4284 hci_dev_lock(hdev); 4285 4286 /* Remove connection if command failed */ 4287 for (i = 0; cp->num_cis; cp->num_cis--, i++) { 4288 struct hci_conn *conn; 4289 u16 handle; 4290 4291 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4292 4293 conn = hci_conn_hash_lookup_handle(hdev, handle); 4294 if (conn) { 4295 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4296 &conn->flags)) 4297 pending = true; 4298 conn->state = BT_CLOSED; 4299 hci_connect_cfm(conn, status); 4300 hci_conn_del(conn); 4301 } 4302 } 4303 4304 if (pending) 4305 hci_le_create_cis_pending(hdev); 4306 4307 hci_dev_unlock(hdev); 4308 } 4309 4310 #define HCI_CS(_op, _func) \ 4311 { \ 4312 .op = _op, \ 4313 .func = _func, \ 4314 } 4315 4316 static const struct hci_cs { 4317 u16 op; 4318 void (*func)(struct hci_dev *hdev, __u8 status); 4319 } hci_cs_table[] = { 4320 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4321 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4322 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4323 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4324 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4325 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4326 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4327 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4328 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4329 hci_cs_read_remote_ext_features), 4330 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4331 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4332 hci_cs_enhanced_setup_sync_conn), 4333 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4334 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4335 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4336 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4337 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4338 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4339 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4340 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4341 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4342 }; 4343 4344 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4345 struct sk_buff *skb, u16 *opcode, u8 *status, 4346 hci_req_complete_t *req_complete, 4347 hci_req_complete_skb_t *req_complete_skb) 4348 { 4349 struct hci_ev_cmd_status *ev = data; 4350 int i; 4351 4352 *opcode = __le16_to_cpu(ev->opcode); 4353 *status = ev->status; 4354 4355 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4356 4357 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4358 if (hci_cs_table[i].op == *opcode) { 4359 hci_cs_table[i].func(hdev, ev->status); 4360 break; 4361 } 4362 } 4363 4364 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4365 4366 /* Indicate request completion if the command failed. Also, if 4367 * we're not waiting for a special event and we get a success 4368 * command status we should try to flag the request as completed 4369 * (since for this kind of commands there will not be a command 4370 * complete event). 4371 */ 4372 if (ev->status || (hdev->req_skb && !hci_skb_event(hdev->req_skb))) { 4373 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4374 req_complete_skb); 4375 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4376 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4377 *opcode); 4378 return; 4379 } 4380 } 4381 4382 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4383 queue_work(hdev->workqueue, &hdev->cmd_work); 4384 } 4385 4386 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4387 struct sk_buff *skb) 4388 { 4389 struct hci_ev_hardware_error *ev = data; 4390 4391 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4392 4393 hdev->hw_error_code = ev->code; 4394 4395 queue_work(hdev->req_workqueue, &hdev->error_reset); 4396 } 4397 4398 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4399 struct sk_buff *skb) 4400 { 4401 struct hci_ev_role_change *ev = data; 4402 struct hci_conn *conn; 4403 4404 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4405 4406 hci_dev_lock(hdev); 4407 4408 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4409 if (conn) { 4410 if (!ev->status) 4411 conn->role = ev->role; 4412 4413 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4414 4415 hci_role_switch_cfm(conn, ev->status, ev->role); 4416 } 4417 4418 hci_dev_unlock(hdev); 4419 } 4420 4421 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4422 struct sk_buff *skb) 4423 { 4424 struct hci_ev_num_comp_pkts *ev = data; 4425 int i; 4426 4427 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4428 flex_array_size(ev, handles, ev->num))) 4429 return; 4430 4431 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) { 4432 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode); 4433 return; 4434 } 4435 4436 bt_dev_dbg(hdev, "num %d", ev->num); 4437 4438 for (i = 0; i < ev->num; i++) { 4439 struct hci_comp_pkts_info *info = &ev->handles[i]; 4440 struct hci_conn *conn; 4441 __u16 handle, count; 4442 4443 handle = __le16_to_cpu(info->handle); 4444 count = __le16_to_cpu(info->count); 4445 4446 conn = hci_conn_hash_lookup_handle(hdev, handle); 4447 if (!conn) 4448 continue; 4449 4450 conn->sent -= count; 4451 4452 switch (conn->type) { 4453 case ACL_LINK: 4454 hdev->acl_cnt += count; 4455 if (hdev->acl_cnt > hdev->acl_pkts) 4456 hdev->acl_cnt = hdev->acl_pkts; 4457 break; 4458 4459 case LE_LINK: 4460 if (hdev->le_pkts) { 4461 hdev->le_cnt += count; 4462 if (hdev->le_cnt > hdev->le_pkts) 4463 hdev->le_cnt = hdev->le_pkts; 4464 } else { 4465 hdev->acl_cnt += count; 4466 if (hdev->acl_cnt > hdev->acl_pkts) 4467 hdev->acl_cnt = hdev->acl_pkts; 4468 } 4469 break; 4470 4471 case SCO_LINK: 4472 hdev->sco_cnt += count; 4473 if (hdev->sco_cnt > hdev->sco_pkts) 4474 hdev->sco_cnt = hdev->sco_pkts; 4475 break; 4476 4477 case ISO_LINK: 4478 if (hdev->iso_pkts) { 4479 hdev->iso_cnt += count; 4480 if (hdev->iso_cnt > hdev->iso_pkts) 4481 hdev->iso_cnt = hdev->iso_pkts; 4482 } else if (hdev->le_pkts) { 4483 hdev->le_cnt += count; 4484 if (hdev->le_cnt > hdev->le_pkts) 4485 hdev->le_cnt = hdev->le_pkts; 4486 } else { 4487 hdev->acl_cnt += count; 4488 if (hdev->acl_cnt > hdev->acl_pkts) 4489 hdev->acl_cnt = hdev->acl_pkts; 4490 } 4491 break; 4492 4493 default: 4494 bt_dev_err(hdev, "unknown type %d conn %p", 4495 conn->type, conn); 4496 break; 4497 } 4498 } 4499 4500 queue_work(hdev->workqueue, &hdev->tx_work); 4501 } 4502 4503 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev, 4504 __u16 handle) 4505 { 4506 struct hci_chan *chan; 4507 4508 switch (hdev->dev_type) { 4509 case HCI_PRIMARY: 4510 return hci_conn_hash_lookup_handle(hdev, handle); 4511 case HCI_AMP: 4512 chan = hci_chan_lookup_handle(hdev, handle); 4513 if (chan) 4514 return chan->conn; 4515 break; 4516 default: 4517 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); 4518 break; 4519 } 4520 4521 return NULL; 4522 } 4523 4524 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data, 4525 struct sk_buff *skb) 4526 { 4527 struct hci_ev_num_comp_blocks *ev = data; 4528 int i; 4529 4530 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS, 4531 flex_array_size(ev, handles, ev->num_hndl))) 4532 return; 4533 4534 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) { 4535 bt_dev_err(hdev, "wrong event for mode %d", 4536 hdev->flow_ctl_mode); 4537 return; 4538 } 4539 4540 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks, 4541 ev->num_hndl); 4542 4543 for (i = 0; i < ev->num_hndl; i++) { 4544 struct hci_comp_blocks_info *info = &ev->handles[i]; 4545 struct hci_conn *conn = NULL; 4546 __u16 handle, block_count; 4547 4548 handle = __le16_to_cpu(info->handle); 4549 block_count = __le16_to_cpu(info->blocks); 4550 4551 conn = __hci_conn_lookup_handle(hdev, handle); 4552 if (!conn) 4553 continue; 4554 4555 conn->sent -= block_count; 4556 4557 switch (conn->type) { 4558 case ACL_LINK: 4559 case AMP_LINK: 4560 hdev->block_cnt += block_count; 4561 if (hdev->block_cnt > hdev->num_blocks) 4562 hdev->block_cnt = hdev->num_blocks; 4563 break; 4564 4565 default: 4566 bt_dev_err(hdev, "unknown type %d conn %p", 4567 conn->type, conn); 4568 break; 4569 } 4570 } 4571 4572 queue_work(hdev->workqueue, &hdev->tx_work); 4573 } 4574 4575 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4576 struct sk_buff *skb) 4577 { 4578 struct hci_ev_mode_change *ev = data; 4579 struct hci_conn *conn; 4580 4581 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4582 4583 hci_dev_lock(hdev); 4584 4585 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4586 if (conn) { 4587 conn->mode = ev->mode; 4588 4589 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4590 &conn->flags)) { 4591 if (conn->mode == HCI_CM_ACTIVE) 4592 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4593 else 4594 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4595 } 4596 4597 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4598 hci_sco_setup(conn, ev->status); 4599 } 4600 4601 hci_dev_unlock(hdev); 4602 } 4603 4604 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4605 struct sk_buff *skb) 4606 { 4607 struct hci_ev_pin_code_req *ev = data; 4608 struct hci_conn *conn; 4609 4610 bt_dev_dbg(hdev, ""); 4611 4612 hci_dev_lock(hdev); 4613 4614 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4615 if (!conn) 4616 goto unlock; 4617 4618 if (conn->state == BT_CONNECTED) { 4619 hci_conn_hold(conn); 4620 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4621 hci_conn_drop(conn); 4622 } 4623 4624 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4625 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4626 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4627 sizeof(ev->bdaddr), &ev->bdaddr); 4628 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4629 u8 secure; 4630 4631 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4632 secure = 1; 4633 else 4634 secure = 0; 4635 4636 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4637 } 4638 4639 unlock: 4640 hci_dev_unlock(hdev); 4641 } 4642 4643 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4644 { 4645 if (key_type == HCI_LK_CHANGED_COMBINATION) 4646 return; 4647 4648 conn->pin_length = pin_len; 4649 conn->key_type = key_type; 4650 4651 switch (key_type) { 4652 case HCI_LK_LOCAL_UNIT: 4653 case HCI_LK_REMOTE_UNIT: 4654 case HCI_LK_DEBUG_COMBINATION: 4655 return; 4656 case HCI_LK_COMBINATION: 4657 if (pin_len == 16) 4658 conn->pending_sec_level = BT_SECURITY_HIGH; 4659 else 4660 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4661 break; 4662 case HCI_LK_UNAUTH_COMBINATION_P192: 4663 case HCI_LK_UNAUTH_COMBINATION_P256: 4664 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4665 break; 4666 case HCI_LK_AUTH_COMBINATION_P192: 4667 conn->pending_sec_level = BT_SECURITY_HIGH; 4668 break; 4669 case HCI_LK_AUTH_COMBINATION_P256: 4670 conn->pending_sec_level = BT_SECURITY_FIPS; 4671 break; 4672 } 4673 } 4674 4675 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4676 struct sk_buff *skb) 4677 { 4678 struct hci_ev_link_key_req *ev = data; 4679 struct hci_cp_link_key_reply cp; 4680 struct hci_conn *conn; 4681 struct link_key *key; 4682 4683 bt_dev_dbg(hdev, ""); 4684 4685 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4686 return; 4687 4688 hci_dev_lock(hdev); 4689 4690 key = hci_find_link_key(hdev, &ev->bdaddr); 4691 if (!key) { 4692 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4693 goto not_found; 4694 } 4695 4696 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4697 4698 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4699 if (conn) { 4700 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4701 4702 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4703 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4704 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4705 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4706 goto not_found; 4707 } 4708 4709 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4710 (conn->pending_sec_level == BT_SECURITY_HIGH || 4711 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4712 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4713 goto not_found; 4714 } 4715 4716 conn_set_key(conn, key->type, key->pin_len); 4717 } 4718 4719 bacpy(&cp.bdaddr, &ev->bdaddr); 4720 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4721 4722 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4723 4724 hci_dev_unlock(hdev); 4725 4726 return; 4727 4728 not_found: 4729 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4730 hci_dev_unlock(hdev); 4731 } 4732 4733 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4734 struct sk_buff *skb) 4735 { 4736 struct hci_ev_link_key_notify *ev = data; 4737 struct hci_conn *conn; 4738 struct link_key *key; 4739 bool persistent; 4740 u8 pin_len = 0; 4741 4742 bt_dev_dbg(hdev, ""); 4743 4744 hci_dev_lock(hdev); 4745 4746 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4747 if (!conn) 4748 goto unlock; 4749 4750 /* Ignore NULL link key against CVE-2020-26555 */ 4751 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4752 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4753 &ev->bdaddr); 4754 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4755 hci_conn_drop(conn); 4756 goto unlock; 4757 } 4758 4759 hci_conn_hold(conn); 4760 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4761 hci_conn_drop(conn); 4762 4763 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4764 conn_set_key(conn, ev->key_type, conn->pin_length); 4765 4766 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4767 goto unlock; 4768 4769 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4770 ev->key_type, pin_len, &persistent); 4771 if (!key) 4772 goto unlock; 4773 4774 /* Update connection information since adding the key will have 4775 * fixed up the type in the case of changed combination keys. 4776 */ 4777 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4778 conn_set_key(conn, key->type, key->pin_len); 4779 4780 mgmt_new_link_key(hdev, key, persistent); 4781 4782 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4783 * is set. If it's not set simply remove the key from the kernel 4784 * list (we've still notified user space about it but with 4785 * store_hint being 0). 4786 */ 4787 if (key->type == HCI_LK_DEBUG_COMBINATION && 4788 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4789 list_del_rcu(&key->list); 4790 kfree_rcu(key, rcu); 4791 goto unlock; 4792 } 4793 4794 if (persistent) 4795 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4796 else 4797 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4798 4799 unlock: 4800 hci_dev_unlock(hdev); 4801 } 4802 4803 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4804 struct sk_buff *skb) 4805 { 4806 struct hci_ev_clock_offset *ev = data; 4807 struct hci_conn *conn; 4808 4809 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4810 4811 hci_dev_lock(hdev); 4812 4813 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4814 if (conn && !ev->status) { 4815 struct inquiry_entry *ie; 4816 4817 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4818 if (ie) { 4819 ie->data.clock_offset = ev->clock_offset; 4820 ie->timestamp = jiffies; 4821 } 4822 } 4823 4824 hci_dev_unlock(hdev); 4825 } 4826 4827 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4828 struct sk_buff *skb) 4829 { 4830 struct hci_ev_pkt_type_change *ev = data; 4831 struct hci_conn *conn; 4832 4833 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4834 4835 hci_dev_lock(hdev); 4836 4837 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4838 if (conn && !ev->status) 4839 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4840 4841 hci_dev_unlock(hdev); 4842 } 4843 4844 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4845 struct sk_buff *skb) 4846 { 4847 struct hci_ev_pscan_rep_mode *ev = data; 4848 struct inquiry_entry *ie; 4849 4850 bt_dev_dbg(hdev, ""); 4851 4852 hci_dev_lock(hdev); 4853 4854 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4855 if (ie) { 4856 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4857 ie->timestamp = jiffies; 4858 } 4859 4860 hci_dev_unlock(hdev); 4861 } 4862 4863 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4864 struct sk_buff *skb) 4865 { 4866 struct hci_ev_inquiry_result_rssi *ev = edata; 4867 struct inquiry_data data; 4868 int i; 4869 4870 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4871 4872 if (!ev->num) 4873 return; 4874 4875 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4876 return; 4877 4878 hci_dev_lock(hdev); 4879 4880 if (skb->len == array_size(ev->num, 4881 sizeof(struct inquiry_info_rssi_pscan))) { 4882 struct inquiry_info_rssi_pscan *info; 4883 4884 for (i = 0; i < ev->num; i++) { 4885 u32 flags; 4886 4887 info = hci_ev_skb_pull(hdev, skb, 4888 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4889 sizeof(*info)); 4890 if (!info) { 4891 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4892 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4893 goto unlock; 4894 } 4895 4896 bacpy(&data.bdaddr, &info->bdaddr); 4897 data.pscan_rep_mode = info->pscan_rep_mode; 4898 data.pscan_period_mode = info->pscan_period_mode; 4899 data.pscan_mode = info->pscan_mode; 4900 memcpy(data.dev_class, info->dev_class, 3); 4901 data.clock_offset = info->clock_offset; 4902 data.rssi = info->rssi; 4903 data.ssp_mode = 0x00; 4904 4905 flags = hci_inquiry_cache_update(hdev, &data, false); 4906 4907 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4908 info->dev_class, info->rssi, 4909 flags, NULL, 0, NULL, 0, 0); 4910 } 4911 } else if (skb->len == array_size(ev->num, 4912 sizeof(struct inquiry_info_rssi))) { 4913 struct inquiry_info_rssi *info; 4914 4915 for (i = 0; i < ev->num; i++) { 4916 u32 flags; 4917 4918 info = hci_ev_skb_pull(hdev, skb, 4919 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4920 sizeof(*info)); 4921 if (!info) { 4922 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4923 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4924 goto unlock; 4925 } 4926 4927 bacpy(&data.bdaddr, &info->bdaddr); 4928 data.pscan_rep_mode = info->pscan_rep_mode; 4929 data.pscan_period_mode = info->pscan_period_mode; 4930 data.pscan_mode = 0x00; 4931 memcpy(data.dev_class, info->dev_class, 3); 4932 data.clock_offset = info->clock_offset; 4933 data.rssi = info->rssi; 4934 data.ssp_mode = 0x00; 4935 4936 flags = hci_inquiry_cache_update(hdev, &data, false); 4937 4938 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4939 info->dev_class, info->rssi, 4940 flags, NULL, 0, NULL, 0, 0); 4941 } 4942 } else { 4943 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4944 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4945 } 4946 unlock: 4947 hci_dev_unlock(hdev); 4948 } 4949 4950 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4951 struct sk_buff *skb) 4952 { 4953 struct hci_ev_remote_ext_features *ev = data; 4954 struct hci_conn *conn; 4955 4956 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4957 4958 hci_dev_lock(hdev); 4959 4960 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4961 if (!conn) 4962 goto unlock; 4963 4964 if (ev->page < HCI_MAX_PAGES) 4965 memcpy(conn->features[ev->page], ev->features, 8); 4966 4967 if (!ev->status && ev->page == 0x01) { 4968 struct inquiry_entry *ie; 4969 4970 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4971 if (ie) 4972 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4973 4974 if (ev->features[0] & LMP_HOST_SSP) { 4975 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4976 } else { 4977 /* It is mandatory by the Bluetooth specification that 4978 * Extended Inquiry Results are only used when Secure 4979 * Simple Pairing is enabled, but some devices violate 4980 * this. 4981 * 4982 * To make these devices work, the internal SSP 4983 * enabled flag needs to be cleared if the remote host 4984 * features do not indicate SSP support */ 4985 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4986 } 4987 4988 if (ev->features[0] & LMP_HOST_SC) 4989 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4990 } 4991 4992 if (conn->state != BT_CONFIG) 4993 goto unlock; 4994 4995 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4996 struct hci_cp_remote_name_req cp; 4997 memset(&cp, 0, sizeof(cp)); 4998 bacpy(&cp.bdaddr, &conn->dst); 4999 cp.pscan_rep_mode = 0x02; 5000 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 5001 } else { 5002 mgmt_device_connected(hdev, conn, NULL, 0); 5003 } 5004 5005 if (!hci_outgoing_auth_needed(hdev, conn)) { 5006 conn->state = BT_CONNECTED; 5007 hci_connect_cfm(conn, ev->status); 5008 hci_conn_drop(conn); 5009 } 5010 5011 unlock: 5012 hci_dev_unlock(hdev); 5013 } 5014 5015 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 5016 struct sk_buff *skb) 5017 { 5018 struct hci_ev_sync_conn_complete *ev = data; 5019 struct hci_conn *conn; 5020 u8 status = ev->status; 5021 5022 switch (ev->link_type) { 5023 case SCO_LINK: 5024 case ESCO_LINK: 5025 break; 5026 default: 5027 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 5028 * for HCI_Synchronous_Connection_Complete is limited to 5029 * either SCO or eSCO 5030 */ 5031 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 5032 return; 5033 } 5034 5035 bt_dev_dbg(hdev, "status 0x%2.2x", status); 5036 5037 hci_dev_lock(hdev); 5038 5039 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 5040 if (!conn) { 5041 if (ev->link_type == ESCO_LINK) 5042 goto unlock; 5043 5044 /* When the link type in the event indicates SCO connection 5045 * and lookup of the connection object fails, then check 5046 * if an eSCO connection object exists. 5047 * 5048 * The core limits the synchronous connections to either 5049 * SCO or eSCO. The eSCO connection is preferred and tried 5050 * to be setup first and until successfully established, 5051 * the link type will be hinted as eSCO. 5052 */ 5053 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 5054 if (!conn) 5055 goto unlock; 5056 } 5057 5058 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 5059 * Processing it more than once per connection can corrupt kernel memory. 5060 * 5061 * As the connection handle is set here for the first time, it indicates 5062 * whether the connection is already set up. 5063 */ 5064 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5065 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 5066 goto unlock; 5067 } 5068 5069 switch (status) { 5070 case 0x00: 5071 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 5072 if (status) { 5073 conn->state = BT_CLOSED; 5074 break; 5075 } 5076 5077 conn->state = BT_CONNECTED; 5078 conn->type = ev->link_type; 5079 5080 hci_debugfs_create_conn(conn); 5081 hci_conn_add_sysfs(conn); 5082 break; 5083 5084 case 0x10: /* Connection Accept Timeout */ 5085 case 0x0d: /* Connection Rejected due to Limited Resources */ 5086 case 0x11: /* Unsupported Feature or Parameter Value */ 5087 case 0x1c: /* SCO interval rejected */ 5088 case 0x1a: /* Unsupported Remote Feature */ 5089 case 0x1e: /* Invalid LMP Parameters */ 5090 case 0x1f: /* Unspecified error */ 5091 case 0x20: /* Unsupported LMP Parameter value */ 5092 if (conn->out) { 5093 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 5094 (hdev->esco_type & EDR_ESCO_MASK); 5095 if (hci_setup_sync(conn, conn->parent->handle)) 5096 goto unlock; 5097 } 5098 fallthrough; 5099 5100 default: 5101 conn->state = BT_CLOSED; 5102 break; 5103 } 5104 5105 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5106 /* Notify only in case of SCO over HCI transport data path which 5107 * is zero and non-zero value shall be non-HCI transport data path 5108 */ 5109 if (conn->codec.data_path == 0 && hdev->notify) { 5110 switch (ev->air_mode) { 5111 case 0x02: 5112 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5113 break; 5114 case 0x03: 5115 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5116 break; 5117 } 5118 } 5119 5120 hci_connect_cfm(conn, status); 5121 if (status) 5122 hci_conn_del(conn); 5123 5124 unlock: 5125 hci_dev_unlock(hdev); 5126 } 5127 5128 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5129 { 5130 size_t parsed = 0; 5131 5132 while (parsed < eir_len) { 5133 u8 field_len = eir[0]; 5134 5135 if (field_len == 0) 5136 return parsed; 5137 5138 parsed += field_len + 1; 5139 eir += field_len + 1; 5140 } 5141 5142 return eir_len; 5143 } 5144 5145 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5146 struct sk_buff *skb) 5147 { 5148 struct hci_ev_ext_inquiry_result *ev = edata; 5149 struct inquiry_data data; 5150 size_t eir_len; 5151 int i; 5152 5153 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5154 flex_array_size(ev, info, ev->num))) 5155 return; 5156 5157 bt_dev_dbg(hdev, "num %d", ev->num); 5158 5159 if (!ev->num) 5160 return; 5161 5162 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5163 return; 5164 5165 hci_dev_lock(hdev); 5166 5167 for (i = 0; i < ev->num; i++) { 5168 struct extended_inquiry_info *info = &ev->info[i]; 5169 u32 flags; 5170 bool name_known; 5171 5172 bacpy(&data.bdaddr, &info->bdaddr); 5173 data.pscan_rep_mode = info->pscan_rep_mode; 5174 data.pscan_period_mode = info->pscan_period_mode; 5175 data.pscan_mode = 0x00; 5176 memcpy(data.dev_class, info->dev_class, 3); 5177 data.clock_offset = info->clock_offset; 5178 data.rssi = info->rssi; 5179 data.ssp_mode = 0x01; 5180 5181 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5182 name_known = eir_get_data(info->data, 5183 sizeof(info->data), 5184 EIR_NAME_COMPLETE, NULL); 5185 else 5186 name_known = true; 5187 5188 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5189 5190 eir_len = eir_get_length(info->data, sizeof(info->data)); 5191 5192 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5193 info->dev_class, info->rssi, 5194 flags, info->data, eir_len, NULL, 0, 0); 5195 } 5196 5197 hci_dev_unlock(hdev); 5198 } 5199 5200 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5201 struct sk_buff *skb) 5202 { 5203 struct hci_ev_key_refresh_complete *ev = data; 5204 struct hci_conn *conn; 5205 5206 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5207 __le16_to_cpu(ev->handle)); 5208 5209 hci_dev_lock(hdev); 5210 5211 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5212 if (!conn) 5213 goto unlock; 5214 5215 /* For BR/EDR the necessary steps are taken through the 5216 * auth_complete event. 5217 */ 5218 if (conn->type != LE_LINK) 5219 goto unlock; 5220 5221 if (!ev->status) 5222 conn->sec_level = conn->pending_sec_level; 5223 5224 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5225 5226 if (ev->status && conn->state == BT_CONNECTED) { 5227 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5228 hci_conn_drop(conn); 5229 goto unlock; 5230 } 5231 5232 if (conn->state == BT_CONFIG) { 5233 if (!ev->status) 5234 conn->state = BT_CONNECTED; 5235 5236 hci_connect_cfm(conn, ev->status); 5237 hci_conn_drop(conn); 5238 } else { 5239 hci_auth_cfm(conn, ev->status); 5240 5241 hci_conn_hold(conn); 5242 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5243 hci_conn_drop(conn); 5244 } 5245 5246 unlock: 5247 hci_dev_unlock(hdev); 5248 } 5249 5250 static u8 hci_get_auth_req(struct hci_conn *conn) 5251 { 5252 /* If remote requests no-bonding follow that lead */ 5253 if (conn->remote_auth == HCI_AT_NO_BONDING || 5254 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5255 return conn->remote_auth | (conn->auth_type & 0x01); 5256 5257 /* If both remote and local have enough IO capabilities, require 5258 * MITM protection 5259 */ 5260 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5261 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5262 return conn->remote_auth | 0x01; 5263 5264 /* No MITM protection possible so ignore remote requirement */ 5265 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5266 } 5267 5268 static u8 bredr_oob_data_present(struct hci_conn *conn) 5269 { 5270 struct hci_dev *hdev = conn->hdev; 5271 struct oob_data *data; 5272 5273 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5274 if (!data) 5275 return 0x00; 5276 5277 if (bredr_sc_enabled(hdev)) { 5278 /* When Secure Connections is enabled, then just 5279 * return the present value stored with the OOB 5280 * data. The stored value contains the right present 5281 * information. However it can only be trusted when 5282 * not in Secure Connection Only mode. 5283 */ 5284 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5285 return data->present; 5286 5287 /* When Secure Connections Only mode is enabled, then 5288 * the P-256 values are required. If they are not 5289 * available, then do not declare that OOB data is 5290 * present. 5291 */ 5292 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5293 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5294 return 0x00; 5295 5296 return 0x02; 5297 } 5298 5299 /* When Secure Connections is not enabled or actually 5300 * not supported by the hardware, then check that if 5301 * P-192 data values are present. 5302 */ 5303 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5304 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5305 return 0x00; 5306 5307 return 0x01; 5308 } 5309 5310 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5311 struct sk_buff *skb) 5312 { 5313 struct hci_ev_io_capa_request *ev = data; 5314 struct hci_conn *conn; 5315 5316 bt_dev_dbg(hdev, ""); 5317 5318 hci_dev_lock(hdev); 5319 5320 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5321 if (!conn || !hci_dev_test_flag(hdev, HCI_SSP_ENABLED)) 5322 goto unlock; 5323 5324 /* Assume remote supports SSP since it has triggered this event */ 5325 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 5326 5327 hci_conn_hold(conn); 5328 5329 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5330 goto unlock; 5331 5332 /* Allow pairing if we're pairable, the initiators of the 5333 * pairing or if the remote is not requesting bonding. 5334 */ 5335 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5336 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5337 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5338 struct hci_cp_io_capability_reply cp; 5339 5340 bacpy(&cp.bdaddr, &ev->bdaddr); 5341 /* Change the IO capability from KeyboardDisplay 5342 * to DisplayYesNo as it is not supported by BT spec. */ 5343 cp.capability = (conn->io_capability == 0x04) ? 5344 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5345 5346 /* If we are initiators, there is no remote information yet */ 5347 if (conn->remote_auth == 0xff) { 5348 /* Request MITM protection if our IO caps allow it 5349 * except for the no-bonding case. 5350 */ 5351 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5352 conn->auth_type != HCI_AT_NO_BONDING) 5353 conn->auth_type |= 0x01; 5354 } else { 5355 conn->auth_type = hci_get_auth_req(conn); 5356 } 5357 5358 /* If we're not bondable, force one of the non-bondable 5359 * authentication requirement values. 5360 */ 5361 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5362 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5363 5364 cp.authentication = conn->auth_type; 5365 cp.oob_data = bredr_oob_data_present(conn); 5366 5367 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5368 sizeof(cp), &cp); 5369 } else { 5370 struct hci_cp_io_capability_neg_reply cp; 5371 5372 bacpy(&cp.bdaddr, &ev->bdaddr); 5373 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5374 5375 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5376 sizeof(cp), &cp); 5377 } 5378 5379 unlock: 5380 hci_dev_unlock(hdev); 5381 } 5382 5383 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5384 struct sk_buff *skb) 5385 { 5386 struct hci_ev_io_capa_reply *ev = data; 5387 struct hci_conn *conn; 5388 5389 bt_dev_dbg(hdev, ""); 5390 5391 hci_dev_lock(hdev); 5392 5393 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5394 if (!conn) 5395 goto unlock; 5396 5397 conn->remote_cap = ev->capability; 5398 conn->remote_auth = ev->authentication; 5399 5400 unlock: 5401 hci_dev_unlock(hdev); 5402 } 5403 5404 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5405 struct sk_buff *skb) 5406 { 5407 struct hci_ev_user_confirm_req *ev = data; 5408 int loc_mitm, rem_mitm, confirm_hint = 0; 5409 struct hci_conn *conn; 5410 5411 bt_dev_dbg(hdev, ""); 5412 5413 hci_dev_lock(hdev); 5414 5415 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5416 goto unlock; 5417 5418 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5419 if (!conn) 5420 goto unlock; 5421 5422 loc_mitm = (conn->auth_type & 0x01); 5423 rem_mitm = (conn->remote_auth & 0x01); 5424 5425 /* If we require MITM but the remote device can't provide that 5426 * (it has NoInputNoOutput) then reject the confirmation 5427 * request. We check the security level here since it doesn't 5428 * necessarily match conn->auth_type. 5429 */ 5430 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5431 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5432 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5433 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5434 sizeof(ev->bdaddr), &ev->bdaddr); 5435 goto unlock; 5436 } 5437 5438 /* If no side requires MITM protection; auto-accept */ 5439 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5440 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5441 5442 /* If we're not the initiators request authorization to 5443 * proceed from user space (mgmt_user_confirm with 5444 * confirm_hint set to 1). The exception is if neither 5445 * side had MITM or if the local IO capability is 5446 * NoInputNoOutput, in which case we do auto-accept 5447 */ 5448 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5449 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5450 (loc_mitm || rem_mitm)) { 5451 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5452 confirm_hint = 1; 5453 goto confirm; 5454 } 5455 5456 /* If there already exists link key in local host, leave the 5457 * decision to user space since the remote device could be 5458 * legitimate or malicious. 5459 */ 5460 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5461 bt_dev_dbg(hdev, "Local host already has link key"); 5462 confirm_hint = 1; 5463 goto confirm; 5464 } 5465 5466 BT_DBG("Auto-accept of user confirmation with %ums delay", 5467 hdev->auto_accept_delay); 5468 5469 if (hdev->auto_accept_delay > 0) { 5470 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5471 queue_delayed_work(conn->hdev->workqueue, 5472 &conn->auto_accept_work, delay); 5473 goto unlock; 5474 } 5475 5476 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5477 sizeof(ev->bdaddr), &ev->bdaddr); 5478 goto unlock; 5479 } 5480 5481 confirm: 5482 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5483 le32_to_cpu(ev->passkey), confirm_hint); 5484 5485 unlock: 5486 hci_dev_unlock(hdev); 5487 } 5488 5489 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5490 struct sk_buff *skb) 5491 { 5492 struct hci_ev_user_passkey_req *ev = data; 5493 5494 bt_dev_dbg(hdev, ""); 5495 5496 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5497 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5498 } 5499 5500 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5501 struct sk_buff *skb) 5502 { 5503 struct hci_ev_user_passkey_notify *ev = data; 5504 struct hci_conn *conn; 5505 5506 bt_dev_dbg(hdev, ""); 5507 5508 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5509 if (!conn) 5510 return; 5511 5512 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5513 conn->passkey_entered = 0; 5514 5515 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5516 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5517 conn->dst_type, conn->passkey_notify, 5518 conn->passkey_entered); 5519 } 5520 5521 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5522 struct sk_buff *skb) 5523 { 5524 struct hci_ev_keypress_notify *ev = data; 5525 struct hci_conn *conn; 5526 5527 bt_dev_dbg(hdev, ""); 5528 5529 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5530 if (!conn) 5531 return; 5532 5533 switch (ev->type) { 5534 case HCI_KEYPRESS_STARTED: 5535 conn->passkey_entered = 0; 5536 return; 5537 5538 case HCI_KEYPRESS_ENTERED: 5539 conn->passkey_entered++; 5540 break; 5541 5542 case HCI_KEYPRESS_ERASED: 5543 conn->passkey_entered--; 5544 break; 5545 5546 case HCI_KEYPRESS_CLEARED: 5547 conn->passkey_entered = 0; 5548 break; 5549 5550 case HCI_KEYPRESS_COMPLETED: 5551 return; 5552 } 5553 5554 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5555 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5556 conn->dst_type, conn->passkey_notify, 5557 conn->passkey_entered); 5558 } 5559 5560 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5561 struct sk_buff *skb) 5562 { 5563 struct hci_ev_simple_pair_complete *ev = data; 5564 struct hci_conn *conn; 5565 5566 bt_dev_dbg(hdev, ""); 5567 5568 hci_dev_lock(hdev); 5569 5570 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5571 if (!conn || !hci_conn_ssp_enabled(conn)) 5572 goto unlock; 5573 5574 /* Reset the authentication requirement to unknown */ 5575 conn->remote_auth = 0xff; 5576 5577 /* To avoid duplicate auth_failed events to user space we check 5578 * the HCI_CONN_AUTH_PEND flag which will be set if we 5579 * initiated the authentication. A traditional auth_complete 5580 * event gets always produced as initiator and is also mapped to 5581 * the mgmt_auth_failed event */ 5582 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5583 mgmt_auth_failed(conn, ev->status); 5584 5585 hci_conn_drop(conn); 5586 5587 unlock: 5588 hci_dev_unlock(hdev); 5589 } 5590 5591 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5592 struct sk_buff *skb) 5593 { 5594 struct hci_ev_remote_host_features *ev = data; 5595 struct inquiry_entry *ie; 5596 struct hci_conn *conn; 5597 5598 bt_dev_dbg(hdev, ""); 5599 5600 hci_dev_lock(hdev); 5601 5602 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5603 if (conn) 5604 memcpy(conn->features[1], ev->features, 8); 5605 5606 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5607 if (ie) 5608 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5609 5610 hci_dev_unlock(hdev); 5611 } 5612 5613 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5614 struct sk_buff *skb) 5615 { 5616 struct hci_ev_remote_oob_data_request *ev = edata; 5617 struct oob_data *data; 5618 5619 bt_dev_dbg(hdev, ""); 5620 5621 hci_dev_lock(hdev); 5622 5623 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5624 goto unlock; 5625 5626 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5627 if (!data) { 5628 struct hci_cp_remote_oob_data_neg_reply cp; 5629 5630 bacpy(&cp.bdaddr, &ev->bdaddr); 5631 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5632 sizeof(cp), &cp); 5633 goto unlock; 5634 } 5635 5636 if (bredr_sc_enabled(hdev)) { 5637 struct hci_cp_remote_oob_ext_data_reply cp; 5638 5639 bacpy(&cp.bdaddr, &ev->bdaddr); 5640 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5641 memset(cp.hash192, 0, sizeof(cp.hash192)); 5642 memset(cp.rand192, 0, sizeof(cp.rand192)); 5643 } else { 5644 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5645 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5646 } 5647 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5648 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5649 5650 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5651 sizeof(cp), &cp); 5652 } else { 5653 struct hci_cp_remote_oob_data_reply cp; 5654 5655 bacpy(&cp.bdaddr, &ev->bdaddr); 5656 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5657 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5658 5659 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5660 sizeof(cp), &cp); 5661 } 5662 5663 unlock: 5664 hci_dev_unlock(hdev); 5665 } 5666 5667 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5668 u8 bdaddr_type, bdaddr_t *local_rpa) 5669 { 5670 if (conn->out) { 5671 conn->dst_type = bdaddr_type; 5672 conn->resp_addr_type = bdaddr_type; 5673 bacpy(&conn->resp_addr, bdaddr); 5674 5675 /* Check if the controller has set a Local RPA then it must be 5676 * used instead or hdev->rpa. 5677 */ 5678 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5679 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5680 bacpy(&conn->init_addr, local_rpa); 5681 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5682 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5683 bacpy(&conn->init_addr, &conn->hdev->rpa); 5684 } else { 5685 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5686 &conn->init_addr_type); 5687 } 5688 } else { 5689 conn->resp_addr_type = conn->hdev->adv_addr_type; 5690 /* Check if the controller has set a Local RPA then it must be 5691 * used instead or hdev->rpa. 5692 */ 5693 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5694 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5695 bacpy(&conn->resp_addr, local_rpa); 5696 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5697 /* In case of ext adv, resp_addr will be updated in 5698 * Adv Terminated event. 5699 */ 5700 if (!ext_adv_capable(conn->hdev)) 5701 bacpy(&conn->resp_addr, 5702 &conn->hdev->random_addr); 5703 } else { 5704 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5705 } 5706 5707 conn->init_addr_type = bdaddr_type; 5708 bacpy(&conn->init_addr, bdaddr); 5709 5710 /* For incoming connections, set the default minimum 5711 * and maximum connection interval. They will be used 5712 * to check if the parameters are in range and if not 5713 * trigger the connection update procedure. 5714 */ 5715 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5716 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5717 } 5718 } 5719 5720 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5721 bdaddr_t *bdaddr, u8 bdaddr_type, 5722 bdaddr_t *local_rpa, u8 role, u16 handle, 5723 u16 interval, u16 latency, 5724 u16 supervision_timeout) 5725 { 5726 struct hci_conn_params *params; 5727 struct hci_conn *conn; 5728 struct smp_irk *irk; 5729 u8 addr_type; 5730 5731 hci_dev_lock(hdev); 5732 5733 /* All controllers implicitly stop advertising in the event of a 5734 * connection, so ensure that the state bit is cleared. 5735 */ 5736 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5737 5738 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5739 if (!conn) { 5740 /* In case of error status and there is no connection pending 5741 * just unlock as there is nothing to cleanup. 5742 */ 5743 if (status) 5744 goto unlock; 5745 5746 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5747 if (!conn) { 5748 bt_dev_err(hdev, "no memory for new connection"); 5749 goto unlock; 5750 } 5751 5752 conn->dst_type = bdaddr_type; 5753 5754 /* If we didn't have a hci_conn object previously 5755 * but we're in central role this must be something 5756 * initiated using an accept list. Since accept list based 5757 * connections are not "first class citizens" we don't 5758 * have full tracking of them. Therefore, we go ahead 5759 * with a "best effort" approach of determining the 5760 * initiator address based on the HCI_PRIVACY flag. 5761 */ 5762 if (conn->out) { 5763 conn->resp_addr_type = bdaddr_type; 5764 bacpy(&conn->resp_addr, bdaddr); 5765 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5766 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5767 bacpy(&conn->init_addr, &hdev->rpa); 5768 } else { 5769 hci_copy_identity_address(hdev, 5770 &conn->init_addr, 5771 &conn->init_addr_type); 5772 } 5773 } 5774 } else { 5775 cancel_delayed_work(&conn->le_conn_timeout); 5776 } 5777 5778 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5779 * Processing it more than once per connection can corrupt kernel memory. 5780 * 5781 * As the connection handle is set here for the first time, it indicates 5782 * whether the connection is already set up. 5783 */ 5784 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5785 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5786 goto unlock; 5787 } 5788 5789 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5790 5791 /* Lookup the identity address from the stored connection 5792 * address and address type. 5793 * 5794 * When establishing connections to an identity address, the 5795 * connection procedure will store the resolvable random 5796 * address first. Now if it can be converted back into the 5797 * identity address, start using the identity address from 5798 * now on. 5799 */ 5800 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5801 if (irk) { 5802 bacpy(&conn->dst, &irk->bdaddr); 5803 conn->dst_type = irk->addr_type; 5804 } 5805 5806 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5807 5808 /* All connection failure handling is taken care of by the 5809 * hci_conn_failed function which is triggered by the HCI 5810 * request completion callbacks used for connecting. 5811 */ 5812 if (status || hci_conn_set_handle(conn, handle)) 5813 goto unlock; 5814 5815 /* Drop the connection if it has been aborted */ 5816 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5817 hci_conn_drop(conn); 5818 goto unlock; 5819 } 5820 5821 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5822 addr_type = BDADDR_LE_PUBLIC; 5823 else 5824 addr_type = BDADDR_LE_RANDOM; 5825 5826 /* Drop the connection if the device is blocked */ 5827 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5828 hci_conn_drop(conn); 5829 goto unlock; 5830 } 5831 5832 mgmt_device_connected(hdev, conn, NULL, 0); 5833 5834 conn->sec_level = BT_SECURITY_LOW; 5835 conn->state = BT_CONFIG; 5836 5837 /* Store current advertising instance as connection advertising instance 5838 * when sotfware rotation is in use so it can be re-enabled when 5839 * disconnected. 5840 */ 5841 if (!ext_adv_capable(hdev)) 5842 conn->adv_instance = hdev->cur_adv_instance; 5843 5844 conn->le_conn_interval = interval; 5845 conn->le_conn_latency = latency; 5846 conn->le_supv_timeout = supervision_timeout; 5847 5848 hci_debugfs_create_conn(conn); 5849 hci_conn_add_sysfs(conn); 5850 5851 /* The remote features procedure is defined for central 5852 * role only. So only in case of an initiated connection 5853 * request the remote features. 5854 * 5855 * If the local controller supports peripheral-initiated features 5856 * exchange, then requesting the remote features in peripheral 5857 * role is possible. Otherwise just transition into the 5858 * connected state without requesting the remote features. 5859 */ 5860 if (conn->out || 5861 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5862 struct hci_cp_le_read_remote_features cp; 5863 5864 cp.handle = __cpu_to_le16(conn->handle); 5865 5866 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5867 sizeof(cp), &cp); 5868 5869 hci_conn_hold(conn); 5870 } else { 5871 conn->state = BT_CONNECTED; 5872 hci_connect_cfm(conn, status); 5873 } 5874 5875 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5876 conn->dst_type); 5877 if (params) { 5878 hci_pend_le_list_del_init(params); 5879 if (params->conn) { 5880 hci_conn_drop(params->conn); 5881 hci_conn_put(params->conn); 5882 params->conn = NULL; 5883 } 5884 } 5885 5886 unlock: 5887 hci_update_passive_scan(hdev); 5888 hci_dev_unlock(hdev); 5889 } 5890 5891 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5892 struct sk_buff *skb) 5893 { 5894 struct hci_ev_le_conn_complete *ev = data; 5895 5896 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5897 5898 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5899 NULL, ev->role, le16_to_cpu(ev->handle), 5900 le16_to_cpu(ev->interval), 5901 le16_to_cpu(ev->latency), 5902 le16_to_cpu(ev->supervision_timeout)); 5903 } 5904 5905 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5906 struct sk_buff *skb) 5907 { 5908 struct hci_ev_le_enh_conn_complete *ev = data; 5909 5910 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5911 5912 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5913 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 5914 le16_to_cpu(ev->interval), 5915 le16_to_cpu(ev->latency), 5916 le16_to_cpu(ev->supervision_timeout)); 5917 } 5918 5919 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 5920 struct sk_buff *skb) 5921 { 5922 struct hci_evt_le_ext_adv_set_term *ev = data; 5923 struct hci_conn *conn; 5924 struct adv_info *adv, *n; 5925 5926 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5927 5928 /* The Bluetooth Core 5.3 specification clearly states that this event 5929 * shall not be sent when the Host disables the advertising set. So in 5930 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 5931 * 5932 * When the Host disables an advertising set, all cleanup is done via 5933 * its command callback and not needed to be duplicated here. 5934 */ 5935 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 5936 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 5937 return; 5938 } 5939 5940 hci_dev_lock(hdev); 5941 5942 adv = hci_find_adv_instance(hdev, ev->handle); 5943 5944 if (ev->status) { 5945 if (!adv) 5946 goto unlock; 5947 5948 /* Remove advertising as it has been terminated */ 5949 hci_remove_adv_instance(hdev, ev->handle); 5950 mgmt_advertising_removed(NULL, hdev, ev->handle); 5951 5952 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 5953 if (adv->enabled) 5954 goto unlock; 5955 } 5956 5957 /* We are no longer advertising, clear HCI_LE_ADV */ 5958 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5959 goto unlock; 5960 } 5961 5962 if (adv) 5963 adv->enabled = false; 5964 5965 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 5966 if (conn) { 5967 /* Store handle in the connection so the correct advertising 5968 * instance can be re-enabled when disconnected. 5969 */ 5970 conn->adv_instance = ev->handle; 5971 5972 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 5973 bacmp(&conn->resp_addr, BDADDR_ANY)) 5974 goto unlock; 5975 5976 if (!ev->handle) { 5977 bacpy(&conn->resp_addr, &hdev->random_addr); 5978 goto unlock; 5979 } 5980 5981 if (adv) 5982 bacpy(&conn->resp_addr, &adv->random_addr); 5983 } 5984 5985 unlock: 5986 hci_dev_unlock(hdev); 5987 } 5988 5989 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 5990 struct sk_buff *skb) 5991 { 5992 struct hci_ev_le_conn_update_complete *ev = data; 5993 struct hci_conn *conn; 5994 5995 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5996 5997 if (ev->status) 5998 return; 5999 6000 hci_dev_lock(hdev); 6001 6002 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6003 if (conn) { 6004 conn->le_conn_interval = le16_to_cpu(ev->interval); 6005 conn->le_conn_latency = le16_to_cpu(ev->latency); 6006 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 6007 } 6008 6009 hci_dev_unlock(hdev); 6010 } 6011 6012 /* This function requires the caller holds hdev->lock */ 6013 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 6014 bdaddr_t *addr, 6015 u8 addr_type, bool addr_resolved, 6016 u8 adv_type) 6017 { 6018 struct hci_conn *conn; 6019 struct hci_conn_params *params; 6020 6021 /* If the event is not connectable don't proceed further */ 6022 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 6023 return NULL; 6024 6025 /* Ignore if the device is blocked or hdev is suspended */ 6026 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 6027 hdev->suspended) 6028 return NULL; 6029 6030 /* Most controller will fail if we try to create new connections 6031 * while we have an existing one in peripheral role. 6032 */ 6033 if (hdev->conn_hash.le_num_peripheral > 0 && 6034 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || 6035 !(hdev->le_states[3] & 0x10))) 6036 return NULL; 6037 6038 /* If we're not connectable only connect devices that we have in 6039 * our pend_le_conns list. 6040 */ 6041 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 6042 addr_type); 6043 if (!params) 6044 return NULL; 6045 6046 if (!params->explicit_connect) { 6047 switch (params->auto_connect) { 6048 case HCI_AUTO_CONN_DIRECT: 6049 /* Only devices advertising with ADV_DIRECT_IND are 6050 * triggering a connection attempt. This is allowing 6051 * incoming connections from peripheral devices. 6052 */ 6053 if (adv_type != LE_ADV_DIRECT_IND) 6054 return NULL; 6055 break; 6056 case HCI_AUTO_CONN_ALWAYS: 6057 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 6058 * are triggering a connection attempt. This means 6059 * that incoming connections from peripheral device are 6060 * accepted and also outgoing connections to peripheral 6061 * devices are established when found. 6062 */ 6063 break; 6064 default: 6065 return NULL; 6066 } 6067 } 6068 6069 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 6070 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 6071 HCI_ROLE_MASTER); 6072 if (!IS_ERR(conn)) { 6073 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 6074 * by higher layer that tried to connect, if no then 6075 * store the pointer since we don't really have any 6076 * other owner of the object besides the params that 6077 * triggered it. This way we can abort the connection if 6078 * the parameters get removed and keep the reference 6079 * count consistent once the connection is established. 6080 */ 6081 6082 if (!params->explicit_connect) 6083 params->conn = hci_conn_get(conn); 6084 6085 return conn; 6086 } 6087 6088 switch (PTR_ERR(conn)) { 6089 case -EBUSY: 6090 /* If hci_connect() returns -EBUSY it means there is already 6091 * an LE connection attempt going on. Since controllers don't 6092 * support more than one connection attempt at the time, we 6093 * don't consider this an error case. 6094 */ 6095 break; 6096 default: 6097 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 6098 return NULL; 6099 } 6100 6101 return NULL; 6102 } 6103 6104 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6105 u8 bdaddr_type, bdaddr_t *direct_addr, 6106 u8 direct_addr_type, s8 rssi, u8 *data, u8 len, 6107 bool ext_adv, bool ctl_time, u64 instant) 6108 { 6109 struct discovery_state *d = &hdev->discovery; 6110 struct smp_irk *irk; 6111 struct hci_conn *conn; 6112 bool match, bdaddr_resolved; 6113 u32 flags; 6114 u8 *ptr; 6115 6116 switch (type) { 6117 case LE_ADV_IND: 6118 case LE_ADV_DIRECT_IND: 6119 case LE_ADV_SCAN_IND: 6120 case LE_ADV_NONCONN_IND: 6121 case LE_ADV_SCAN_RSP: 6122 break; 6123 default: 6124 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6125 "type: 0x%02x", type); 6126 return; 6127 } 6128 6129 if (len > max_adv_len(hdev)) { 6130 bt_dev_err_ratelimited(hdev, 6131 "adv larger than maximum supported"); 6132 return; 6133 } 6134 6135 /* Find the end of the data in case the report contains padded zero 6136 * bytes at the end causing an invalid length value. 6137 * 6138 * When data is NULL, len is 0 so there is no need for extra ptr 6139 * check as 'ptr < data + 0' is already false in such case. 6140 */ 6141 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6142 if (ptr + 1 + *ptr > data + len) 6143 break; 6144 } 6145 6146 /* Adjust for actual length. This handles the case when remote 6147 * device is advertising with incorrect data length. 6148 */ 6149 len = ptr - data; 6150 6151 /* If the direct address is present, then this report is from 6152 * a LE Direct Advertising Report event. In that case it is 6153 * important to see if the address is matching the local 6154 * controller address. 6155 */ 6156 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6157 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6158 &bdaddr_resolved); 6159 6160 /* Only resolvable random addresses are valid for these 6161 * kind of reports and others can be ignored. 6162 */ 6163 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6164 return; 6165 6166 /* If the controller is not using resolvable random 6167 * addresses, then this report can be ignored. 6168 */ 6169 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6170 return; 6171 6172 /* If the local IRK of the controller does not match 6173 * with the resolvable random address provided, then 6174 * this report can be ignored. 6175 */ 6176 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6177 return; 6178 } 6179 6180 /* Check if we need to convert to identity address */ 6181 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6182 if (irk) { 6183 bdaddr = &irk->bdaddr; 6184 bdaddr_type = irk->addr_type; 6185 } 6186 6187 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6188 6189 /* Check if we have been requested to connect to this device. 6190 * 6191 * direct_addr is set only for directed advertising reports (it is NULL 6192 * for advertising reports) and is already verified to be RPA above. 6193 */ 6194 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6195 type); 6196 if (!ext_adv && conn && type == LE_ADV_IND && 6197 len <= max_adv_len(hdev)) { 6198 /* Store report for later inclusion by 6199 * mgmt_device_connected 6200 */ 6201 memcpy(conn->le_adv_data, data, len); 6202 conn->le_adv_data_len = len; 6203 } 6204 6205 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6206 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6207 else 6208 flags = 0; 6209 6210 /* All scan results should be sent up for Mesh systems */ 6211 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6212 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6213 rssi, flags, data, len, NULL, 0, instant); 6214 return; 6215 } 6216 6217 /* Passive scanning shouldn't trigger any device found events, 6218 * except for devices marked as CONN_REPORT for which we do send 6219 * device found events, or advertisement monitoring requested. 6220 */ 6221 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6222 if (type == LE_ADV_DIRECT_IND) 6223 return; 6224 6225 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6226 bdaddr, bdaddr_type) && 6227 idr_is_empty(&hdev->adv_monitors_idr)) 6228 return; 6229 6230 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6231 rssi, flags, data, len, NULL, 0, 0); 6232 return; 6233 } 6234 6235 /* When receiving a scan response, then there is no way to 6236 * know if the remote device is connectable or not. However 6237 * since scan responses are merged with a previously seen 6238 * advertising report, the flags field from that report 6239 * will be used. 6240 * 6241 * In the unlikely case that a controller just sends a scan 6242 * response event that doesn't match the pending report, then 6243 * it is marked as a standalone SCAN_RSP. 6244 */ 6245 if (type == LE_ADV_SCAN_RSP) 6246 flags = MGMT_DEV_FOUND_SCAN_RSP; 6247 6248 /* If there's nothing pending either store the data from this 6249 * event or send an immediate device found event if the data 6250 * should not be stored for later. 6251 */ 6252 if (!ext_adv && !has_pending_adv_report(hdev)) { 6253 /* If the report will trigger a SCAN_REQ store it for 6254 * later merging. 6255 */ 6256 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6257 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6258 rssi, flags, data, len); 6259 return; 6260 } 6261 6262 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6263 rssi, flags, data, len, NULL, 0, 0); 6264 return; 6265 } 6266 6267 /* Check if the pending report is for the same device as the new one */ 6268 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6269 bdaddr_type == d->last_adv_addr_type); 6270 6271 /* If the pending data doesn't match this report or this isn't a 6272 * scan response (e.g. we got a duplicate ADV_IND) then force 6273 * sending of the pending data. 6274 */ 6275 if (type != LE_ADV_SCAN_RSP || !match) { 6276 /* Send out whatever is in the cache, but skip duplicates */ 6277 if (!match) 6278 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6279 d->last_adv_addr_type, NULL, 6280 d->last_adv_rssi, d->last_adv_flags, 6281 d->last_adv_data, 6282 d->last_adv_data_len, NULL, 0, 0); 6283 6284 /* If the new report will trigger a SCAN_REQ store it for 6285 * later merging. 6286 */ 6287 if (!ext_adv && (type == LE_ADV_IND || 6288 type == LE_ADV_SCAN_IND)) { 6289 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6290 rssi, flags, data, len); 6291 return; 6292 } 6293 6294 /* The advertising reports cannot be merged, so clear 6295 * the pending report and send out a device found event. 6296 */ 6297 clear_pending_adv_report(hdev); 6298 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6299 rssi, flags, data, len, NULL, 0, 0); 6300 return; 6301 } 6302 6303 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6304 * the new event is a SCAN_RSP. We can therefore proceed with 6305 * sending a merged device found event. 6306 */ 6307 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6308 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6309 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6310 clear_pending_adv_report(hdev); 6311 } 6312 6313 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6314 struct sk_buff *skb) 6315 { 6316 struct hci_ev_le_advertising_report *ev = data; 6317 u64 instant = jiffies; 6318 6319 if (!ev->num) 6320 return; 6321 6322 hci_dev_lock(hdev); 6323 6324 while (ev->num--) { 6325 struct hci_ev_le_advertising_info *info; 6326 s8 rssi; 6327 6328 info = hci_le_ev_skb_pull(hdev, skb, 6329 HCI_EV_LE_ADVERTISING_REPORT, 6330 sizeof(*info)); 6331 if (!info) 6332 break; 6333 6334 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6335 info->length + 1)) 6336 break; 6337 6338 if (info->length <= max_adv_len(hdev)) { 6339 rssi = info->data[info->length]; 6340 process_adv_report(hdev, info->type, &info->bdaddr, 6341 info->bdaddr_type, NULL, 0, rssi, 6342 info->data, info->length, false, 6343 false, instant); 6344 } else { 6345 bt_dev_err(hdev, "Dropping invalid advertising data"); 6346 } 6347 } 6348 6349 hci_dev_unlock(hdev); 6350 } 6351 6352 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6353 { 6354 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6355 switch (evt_type) { 6356 case LE_LEGACY_ADV_IND: 6357 return LE_ADV_IND; 6358 case LE_LEGACY_ADV_DIRECT_IND: 6359 return LE_ADV_DIRECT_IND; 6360 case LE_LEGACY_ADV_SCAN_IND: 6361 return LE_ADV_SCAN_IND; 6362 case LE_LEGACY_NONCONN_IND: 6363 return LE_ADV_NONCONN_IND; 6364 case LE_LEGACY_SCAN_RSP_ADV: 6365 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6366 return LE_ADV_SCAN_RSP; 6367 } 6368 6369 goto invalid; 6370 } 6371 6372 if (evt_type & LE_EXT_ADV_CONN_IND) { 6373 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6374 return LE_ADV_DIRECT_IND; 6375 6376 return LE_ADV_IND; 6377 } 6378 6379 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6380 return LE_ADV_SCAN_RSP; 6381 6382 if (evt_type & LE_EXT_ADV_SCAN_IND) 6383 return LE_ADV_SCAN_IND; 6384 6385 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6386 evt_type & LE_EXT_ADV_DIRECT_IND) 6387 return LE_ADV_NONCONN_IND; 6388 6389 invalid: 6390 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6391 evt_type); 6392 6393 return LE_ADV_INVALID; 6394 } 6395 6396 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6397 struct sk_buff *skb) 6398 { 6399 struct hci_ev_le_ext_adv_report *ev = data; 6400 u64 instant = jiffies; 6401 6402 if (!ev->num) 6403 return; 6404 6405 hci_dev_lock(hdev); 6406 6407 while (ev->num--) { 6408 struct hci_ev_le_ext_adv_info *info; 6409 u8 legacy_evt_type; 6410 u16 evt_type; 6411 6412 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6413 sizeof(*info)); 6414 if (!info) 6415 break; 6416 6417 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6418 info->length)) 6419 break; 6420 6421 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6422 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6423 if (legacy_evt_type != LE_ADV_INVALID) { 6424 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6425 info->bdaddr_type, NULL, 0, 6426 info->rssi, info->data, info->length, 6427 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6428 false, instant); 6429 } 6430 } 6431 6432 hci_dev_unlock(hdev); 6433 } 6434 6435 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6436 { 6437 struct hci_cp_le_pa_term_sync cp; 6438 6439 memset(&cp, 0, sizeof(cp)); 6440 cp.handle = handle; 6441 6442 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6443 } 6444 6445 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6446 struct sk_buff *skb) 6447 { 6448 struct hci_ev_le_pa_sync_established *ev = data; 6449 int mask = hdev->link_mode; 6450 __u8 flags = 0; 6451 struct hci_conn *pa_sync; 6452 6453 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6454 6455 hci_dev_lock(hdev); 6456 6457 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6458 6459 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6460 if (!(mask & HCI_LM_ACCEPT)) { 6461 hci_le_pa_term_sync(hdev, ev->handle); 6462 goto unlock; 6463 } 6464 6465 if (!(flags & HCI_PROTO_DEFER)) 6466 goto unlock; 6467 6468 if (ev->status) { 6469 /* Add connection to indicate the failed PA sync event */ 6470 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 6471 HCI_ROLE_SLAVE); 6472 6473 if (!pa_sync) 6474 goto unlock; 6475 6476 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6477 6478 /* Notify iso layer */ 6479 hci_connect_cfm(pa_sync, ev->status); 6480 } 6481 6482 unlock: 6483 hci_dev_unlock(hdev); 6484 } 6485 6486 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6487 struct sk_buff *skb) 6488 { 6489 struct hci_ev_le_per_adv_report *ev = data; 6490 int mask = hdev->link_mode; 6491 __u8 flags = 0; 6492 6493 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6494 6495 hci_dev_lock(hdev); 6496 6497 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 6498 if (!(mask & HCI_LM_ACCEPT)) 6499 hci_le_pa_term_sync(hdev, ev->sync_handle); 6500 6501 hci_dev_unlock(hdev); 6502 } 6503 6504 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6505 struct sk_buff *skb) 6506 { 6507 struct hci_ev_le_remote_feat_complete *ev = data; 6508 struct hci_conn *conn; 6509 6510 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6511 6512 hci_dev_lock(hdev); 6513 6514 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6515 if (conn) { 6516 if (!ev->status) 6517 memcpy(conn->features[0], ev->features, 8); 6518 6519 if (conn->state == BT_CONFIG) { 6520 __u8 status; 6521 6522 /* If the local controller supports peripheral-initiated 6523 * features exchange, but the remote controller does 6524 * not, then it is possible that the error code 0x1a 6525 * for unsupported remote feature gets returned. 6526 * 6527 * In this specific case, allow the connection to 6528 * transition into connected state and mark it as 6529 * successful. 6530 */ 6531 if (!conn->out && ev->status == HCI_ERROR_UNSUPPORTED_REMOTE_FEATURE && 6532 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6533 status = 0x00; 6534 else 6535 status = ev->status; 6536 6537 conn->state = BT_CONNECTED; 6538 hci_connect_cfm(conn, status); 6539 hci_conn_drop(conn); 6540 } 6541 } 6542 6543 hci_dev_unlock(hdev); 6544 } 6545 6546 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6547 struct sk_buff *skb) 6548 { 6549 struct hci_ev_le_ltk_req *ev = data; 6550 struct hci_cp_le_ltk_reply cp; 6551 struct hci_cp_le_ltk_neg_reply neg; 6552 struct hci_conn *conn; 6553 struct smp_ltk *ltk; 6554 6555 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6556 6557 hci_dev_lock(hdev); 6558 6559 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6560 if (conn == NULL) 6561 goto not_found; 6562 6563 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6564 if (!ltk) 6565 goto not_found; 6566 6567 if (smp_ltk_is_sc(ltk)) { 6568 /* With SC both EDiv and Rand are set to zero */ 6569 if (ev->ediv || ev->rand) 6570 goto not_found; 6571 } else { 6572 /* For non-SC keys check that EDiv and Rand match */ 6573 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6574 goto not_found; 6575 } 6576 6577 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6578 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6579 cp.handle = cpu_to_le16(conn->handle); 6580 6581 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6582 6583 conn->enc_key_size = ltk->enc_size; 6584 6585 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6586 6587 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6588 * temporary key used to encrypt a connection following 6589 * pairing. It is used during the Encrypted Session Setup to 6590 * distribute the keys. Later, security can be re-established 6591 * using a distributed LTK. 6592 */ 6593 if (ltk->type == SMP_STK) { 6594 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6595 list_del_rcu(<k->list); 6596 kfree_rcu(ltk, rcu); 6597 } else { 6598 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6599 } 6600 6601 hci_dev_unlock(hdev); 6602 6603 return; 6604 6605 not_found: 6606 neg.handle = ev->handle; 6607 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6608 hci_dev_unlock(hdev); 6609 } 6610 6611 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6612 u8 reason) 6613 { 6614 struct hci_cp_le_conn_param_req_neg_reply cp; 6615 6616 cp.handle = cpu_to_le16(handle); 6617 cp.reason = reason; 6618 6619 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6620 &cp); 6621 } 6622 6623 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6624 struct sk_buff *skb) 6625 { 6626 struct hci_ev_le_remote_conn_param_req *ev = data; 6627 struct hci_cp_le_conn_param_req_reply cp; 6628 struct hci_conn *hcon; 6629 u16 handle, min, max, latency, timeout; 6630 6631 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6632 6633 handle = le16_to_cpu(ev->handle); 6634 min = le16_to_cpu(ev->interval_min); 6635 max = le16_to_cpu(ev->interval_max); 6636 latency = le16_to_cpu(ev->latency); 6637 timeout = le16_to_cpu(ev->timeout); 6638 6639 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6640 if (!hcon || hcon->state != BT_CONNECTED) 6641 return send_conn_param_neg_reply(hdev, handle, 6642 HCI_ERROR_UNKNOWN_CONN_ID); 6643 6644 if (max > hcon->le_conn_max_interval) 6645 return send_conn_param_neg_reply(hdev, handle, 6646 HCI_ERROR_INVALID_LL_PARAMS); 6647 6648 if (hci_check_conn_params(min, max, latency, timeout)) 6649 return send_conn_param_neg_reply(hdev, handle, 6650 HCI_ERROR_INVALID_LL_PARAMS); 6651 6652 if (hcon->role == HCI_ROLE_MASTER) { 6653 struct hci_conn_params *params; 6654 u8 store_hint; 6655 6656 hci_dev_lock(hdev); 6657 6658 params = hci_conn_params_lookup(hdev, &hcon->dst, 6659 hcon->dst_type); 6660 if (params) { 6661 params->conn_min_interval = min; 6662 params->conn_max_interval = max; 6663 params->conn_latency = latency; 6664 params->supervision_timeout = timeout; 6665 store_hint = 0x01; 6666 } else { 6667 store_hint = 0x00; 6668 } 6669 6670 hci_dev_unlock(hdev); 6671 6672 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6673 store_hint, min, max, latency, timeout); 6674 } 6675 6676 cp.handle = ev->handle; 6677 cp.interval_min = ev->interval_min; 6678 cp.interval_max = ev->interval_max; 6679 cp.latency = ev->latency; 6680 cp.timeout = ev->timeout; 6681 cp.min_ce_len = 0; 6682 cp.max_ce_len = 0; 6683 6684 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6685 } 6686 6687 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6688 struct sk_buff *skb) 6689 { 6690 struct hci_ev_le_direct_adv_report *ev = data; 6691 u64 instant = jiffies; 6692 int i; 6693 6694 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6695 flex_array_size(ev, info, ev->num))) 6696 return; 6697 6698 if (!ev->num) 6699 return; 6700 6701 hci_dev_lock(hdev); 6702 6703 for (i = 0; i < ev->num; i++) { 6704 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6705 6706 process_adv_report(hdev, info->type, &info->bdaddr, 6707 info->bdaddr_type, &info->direct_addr, 6708 info->direct_addr_type, info->rssi, NULL, 0, 6709 false, false, instant); 6710 } 6711 6712 hci_dev_unlock(hdev); 6713 } 6714 6715 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6716 struct sk_buff *skb) 6717 { 6718 struct hci_ev_le_phy_update_complete *ev = data; 6719 struct hci_conn *conn; 6720 6721 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6722 6723 if (ev->status) 6724 return; 6725 6726 hci_dev_lock(hdev); 6727 6728 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6729 if (!conn) 6730 goto unlock; 6731 6732 conn->le_tx_phy = ev->tx_phy; 6733 conn->le_rx_phy = ev->rx_phy; 6734 6735 unlock: 6736 hci_dev_unlock(hdev); 6737 } 6738 6739 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6740 struct sk_buff *skb) 6741 { 6742 struct hci_evt_le_cis_established *ev = data; 6743 struct hci_conn *conn; 6744 struct bt_iso_qos *qos; 6745 bool pending = false; 6746 u16 handle = __le16_to_cpu(ev->handle); 6747 6748 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6749 6750 hci_dev_lock(hdev); 6751 6752 conn = hci_conn_hash_lookup_handle(hdev, handle); 6753 if (!conn) { 6754 bt_dev_err(hdev, 6755 "Unable to find connection with handle 0x%4.4x", 6756 handle); 6757 goto unlock; 6758 } 6759 6760 if (conn->type != ISO_LINK) { 6761 bt_dev_err(hdev, 6762 "Invalid connection link type handle 0x%4.4x", 6763 handle); 6764 goto unlock; 6765 } 6766 6767 qos = &conn->iso_qos; 6768 6769 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6770 6771 /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */ 6772 qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250; 6773 qos->ucast.out.interval = qos->ucast.in.interval; 6774 6775 switch (conn->role) { 6776 case HCI_ROLE_SLAVE: 6777 /* Convert Transport Latency (us) to Latency (msec) */ 6778 qos->ucast.in.latency = 6779 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6780 1000); 6781 qos->ucast.out.latency = 6782 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6783 1000); 6784 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6785 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6786 qos->ucast.in.phy = ev->c_phy; 6787 qos->ucast.out.phy = ev->p_phy; 6788 break; 6789 case HCI_ROLE_MASTER: 6790 /* Convert Transport Latency (us) to Latency (msec) */ 6791 qos->ucast.out.latency = 6792 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6793 1000); 6794 qos->ucast.in.latency = 6795 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6796 1000); 6797 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6798 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6799 qos->ucast.out.phy = ev->c_phy; 6800 qos->ucast.in.phy = ev->p_phy; 6801 break; 6802 } 6803 6804 if (!ev->status) { 6805 conn->state = BT_CONNECTED; 6806 hci_debugfs_create_conn(conn); 6807 hci_conn_add_sysfs(conn); 6808 hci_iso_setup_path(conn); 6809 goto unlock; 6810 } 6811 6812 conn->state = BT_CLOSED; 6813 hci_connect_cfm(conn, ev->status); 6814 hci_conn_del(conn); 6815 6816 unlock: 6817 if (pending) 6818 hci_le_create_cis_pending(hdev); 6819 6820 hci_dev_unlock(hdev); 6821 } 6822 6823 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6824 { 6825 struct hci_cp_le_reject_cis cp; 6826 6827 memset(&cp, 0, sizeof(cp)); 6828 cp.handle = handle; 6829 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6830 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6831 } 6832 6833 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6834 { 6835 struct hci_cp_le_accept_cis cp; 6836 6837 memset(&cp, 0, sizeof(cp)); 6838 cp.handle = handle; 6839 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6840 } 6841 6842 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6843 struct sk_buff *skb) 6844 { 6845 struct hci_evt_le_cis_req *ev = data; 6846 u16 acl_handle, cis_handle; 6847 struct hci_conn *acl, *cis; 6848 int mask; 6849 __u8 flags = 0; 6850 6851 acl_handle = __le16_to_cpu(ev->acl_handle); 6852 cis_handle = __le16_to_cpu(ev->cis_handle); 6853 6854 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6855 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6856 6857 hci_dev_lock(hdev); 6858 6859 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6860 if (!acl) 6861 goto unlock; 6862 6863 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 6864 if (!(mask & HCI_LM_ACCEPT)) { 6865 hci_le_reject_cis(hdev, ev->cis_handle); 6866 goto unlock; 6867 } 6868 6869 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6870 if (!cis) { 6871 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE, 6872 cis_handle); 6873 if (!cis) { 6874 hci_le_reject_cis(hdev, ev->cis_handle); 6875 goto unlock; 6876 } 6877 } 6878 6879 cis->iso_qos.ucast.cig = ev->cig_id; 6880 cis->iso_qos.ucast.cis = ev->cis_id; 6881 6882 if (!(flags & HCI_PROTO_DEFER)) { 6883 hci_le_accept_cis(hdev, ev->cis_handle); 6884 } else { 6885 cis->state = BT_CONNECT2; 6886 hci_connect_cfm(cis, 0); 6887 } 6888 6889 unlock: 6890 hci_dev_unlock(hdev); 6891 } 6892 6893 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 6894 { 6895 u8 handle = PTR_UINT(data); 6896 6897 return hci_le_terminate_big_sync(hdev, handle, 6898 HCI_ERROR_LOCAL_HOST_TERM); 6899 } 6900 6901 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6902 struct sk_buff *skb) 6903 { 6904 struct hci_evt_le_create_big_complete *ev = data; 6905 struct hci_conn *conn; 6906 __u8 i = 0; 6907 6908 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6909 6910 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6911 flex_array_size(ev, bis_handle, ev->num_bis))) 6912 return; 6913 6914 hci_dev_lock(hdev); 6915 rcu_read_lock(); 6916 6917 /* Connect all BISes that are bound to the BIG */ 6918 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) { 6919 if (bacmp(&conn->dst, BDADDR_ANY) || 6920 conn->type != ISO_LINK || 6921 conn->iso_qos.bcast.big != ev->handle) 6922 continue; 6923 6924 if (hci_conn_set_handle(conn, 6925 __le16_to_cpu(ev->bis_handle[i++]))) 6926 continue; 6927 6928 if (!ev->status) { 6929 conn->state = BT_CONNECTED; 6930 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 6931 rcu_read_unlock(); 6932 hci_debugfs_create_conn(conn); 6933 hci_conn_add_sysfs(conn); 6934 hci_iso_setup_path(conn); 6935 rcu_read_lock(); 6936 continue; 6937 } 6938 6939 hci_connect_cfm(conn, ev->status); 6940 rcu_read_unlock(); 6941 hci_conn_del(conn); 6942 rcu_read_lock(); 6943 } 6944 6945 rcu_read_unlock(); 6946 6947 if (!ev->status && !i) 6948 /* If no BISes have been connected for the BIG, 6949 * terminate. This is in case all bound connections 6950 * have been closed before the BIG creation 6951 * has completed. 6952 */ 6953 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 6954 UINT_PTR(ev->handle), NULL); 6955 6956 hci_dev_unlock(hdev); 6957 } 6958 6959 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6960 struct sk_buff *skb) 6961 { 6962 struct hci_evt_le_big_sync_estabilished *ev = data; 6963 struct hci_conn *bis; 6964 int i; 6965 6966 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6967 6968 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 6969 flex_array_size(ev, bis, ev->num_bis))) 6970 return; 6971 6972 hci_dev_lock(hdev); 6973 6974 for (i = 0; i < ev->num_bis; i++) { 6975 u16 handle = le16_to_cpu(ev->bis[i]); 6976 __le32 interval; 6977 6978 bis = hci_conn_hash_lookup_handle(hdev, handle); 6979 if (!bis) { 6980 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 6981 HCI_ROLE_SLAVE, handle); 6982 if (!bis) 6983 continue; 6984 } 6985 6986 if (ev->status != 0x42) 6987 /* Mark PA sync as established */ 6988 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 6989 6990 bis->iso_qos.bcast.big = ev->handle; 6991 memset(&interval, 0, sizeof(interval)); 6992 memcpy(&interval, ev->latency, sizeof(ev->latency)); 6993 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 6994 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 6995 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 6996 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 6997 6998 if (!ev->status) { 6999 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 7000 hci_iso_setup_path(bis); 7001 } 7002 } 7003 7004 /* In case BIG sync failed, notify each failed connection to 7005 * the user after all hci connections have been added 7006 */ 7007 if (ev->status) 7008 for (i = 0; i < ev->num_bis; i++) { 7009 u16 handle = le16_to_cpu(ev->bis[i]); 7010 7011 bis = hci_conn_hash_lookup_handle(hdev, handle); 7012 7013 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 7014 hci_connect_cfm(bis, ev->status); 7015 } 7016 7017 hci_dev_unlock(hdev); 7018 } 7019 7020 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7021 struct sk_buff *skb) 7022 { 7023 struct hci_evt_le_big_info_adv_report *ev = data; 7024 int mask = hdev->link_mode; 7025 __u8 flags = 0; 7026 struct hci_conn *pa_sync; 7027 7028 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7029 7030 hci_dev_lock(hdev); 7031 7032 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 7033 if (!(mask & HCI_LM_ACCEPT)) { 7034 hci_le_pa_term_sync(hdev, ev->sync_handle); 7035 goto unlock; 7036 } 7037 7038 if (!(flags & HCI_PROTO_DEFER)) 7039 goto unlock; 7040 7041 pa_sync = hci_conn_hash_lookup_pa_sync_handle 7042 (hdev, 7043 le16_to_cpu(ev->sync_handle)); 7044 7045 if (pa_sync) 7046 goto unlock; 7047 7048 /* Add connection to indicate the PA sync event */ 7049 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 7050 HCI_ROLE_SLAVE); 7051 7052 if (!pa_sync) 7053 goto unlock; 7054 7055 pa_sync->sync_handle = le16_to_cpu(ev->sync_handle); 7056 set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags); 7057 7058 /* Notify iso layer */ 7059 hci_connect_cfm(pa_sync, 0x00); 7060 7061 /* Notify MGMT layer */ 7062 mgmt_device_connected(hdev, pa_sync, NULL, 0); 7063 7064 unlock: 7065 hci_dev_unlock(hdev); 7066 } 7067 7068 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7069 [_op] = { \ 7070 .func = _func, \ 7071 .min_len = _min_len, \ 7072 .max_len = _max_len, \ 7073 } 7074 7075 #define HCI_LE_EV(_op, _func, _len) \ 7076 HCI_LE_EV_VL(_op, _func, _len, _len) 7077 7078 #define HCI_LE_EV_STATUS(_op, _func) \ 7079 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7080 7081 /* Entries in this table shall have their position according to the subevent 7082 * opcode they handle so the use of the macros above is recommend since it does 7083 * attempt to initialize at its proper index using Designated Initializers that 7084 * way events without a callback function can be ommited. 7085 */ 7086 static const struct hci_le_ev { 7087 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7088 u16 min_len; 7089 u16 max_len; 7090 } hci_le_ev_table[U8_MAX + 1] = { 7091 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7092 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7093 sizeof(struct hci_ev_le_conn_complete)), 7094 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7095 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7096 sizeof(struct hci_ev_le_advertising_report), 7097 HCI_MAX_EVENT_SIZE), 7098 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7099 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7100 hci_le_conn_update_complete_evt, 7101 sizeof(struct hci_ev_le_conn_update_complete)), 7102 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7103 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7104 hci_le_remote_feat_complete_evt, 7105 sizeof(struct hci_ev_le_remote_feat_complete)), 7106 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7107 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7108 sizeof(struct hci_ev_le_ltk_req)), 7109 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7110 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7111 hci_le_remote_conn_param_req_evt, 7112 sizeof(struct hci_ev_le_remote_conn_param_req)), 7113 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7114 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7115 hci_le_enh_conn_complete_evt, 7116 sizeof(struct hci_ev_le_enh_conn_complete)), 7117 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7118 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7119 sizeof(struct hci_ev_le_direct_adv_report), 7120 HCI_MAX_EVENT_SIZE), 7121 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7122 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7123 sizeof(struct hci_ev_le_phy_update_complete)), 7124 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7125 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7126 sizeof(struct hci_ev_le_ext_adv_report), 7127 HCI_MAX_EVENT_SIZE), 7128 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7129 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7130 hci_le_pa_sync_estabilished_evt, 7131 sizeof(struct hci_ev_le_pa_sync_established)), 7132 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7133 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7134 hci_le_per_adv_report_evt, 7135 sizeof(struct hci_ev_le_per_adv_report), 7136 HCI_MAX_EVENT_SIZE), 7137 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7138 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7139 sizeof(struct hci_evt_le_ext_adv_set_term)), 7140 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7141 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7142 sizeof(struct hci_evt_le_cis_established)), 7143 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7144 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7145 sizeof(struct hci_evt_le_cis_req)), 7146 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7147 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7148 hci_le_create_big_complete_evt, 7149 sizeof(struct hci_evt_le_create_big_complete), 7150 HCI_MAX_EVENT_SIZE), 7151 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7152 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7153 hci_le_big_sync_established_evt, 7154 sizeof(struct hci_evt_le_big_sync_estabilished), 7155 HCI_MAX_EVENT_SIZE), 7156 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7157 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7158 hci_le_big_info_adv_report_evt, 7159 sizeof(struct hci_evt_le_big_info_adv_report), 7160 HCI_MAX_EVENT_SIZE), 7161 }; 7162 7163 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7164 struct sk_buff *skb, u16 *opcode, u8 *status, 7165 hci_req_complete_t *req_complete, 7166 hci_req_complete_skb_t *req_complete_skb) 7167 { 7168 struct hci_ev_le_meta *ev = data; 7169 const struct hci_le_ev *subev; 7170 7171 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7172 7173 /* Only match event if command OGF is for LE */ 7174 if (hdev->req_skb && 7175 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) == 0x08 && 7176 hci_skb_event(hdev->req_skb) == ev->subevent) { 7177 *opcode = hci_skb_opcode(hdev->req_skb); 7178 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7179 req_complete_skb); 7180 } 7181 7182 subev = &hci_le_ev_table[ev->subevent]; 7183 if (!subev->func) 7184 return; 7185 7186 if (skb->len < subev->min_len) { 7187 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7188 ev->subevent, skb->len, subev->min_len); 7189 return; 7190 } 7191 7192 /* Just warn if the length is over max_len size it still be 7193 * possible to partially parse the event so leave to callback to 7194 * decide if that is acceptable. 7195 */ 7196 if (skb->len > subev->max_len) 7197 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7198 ev->subevent, skb->len, subev->max_len); 7199 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7200 if (!data) 7201 return; 7202 7203 subev->func(hdev, data, skb); 7204 } 7205 7206 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7207 u8 event, struct sk_buff *skb) 7208 { 7209 struct hci_ev_cmd_complete *ev; 7210 struct hci_event_hdr *hdr; 7211 7212 if (!skb) 7213 return false; 7214 7215 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7216 if (!hdr) 7217 return false; 7218 7219 if (event) { 7220 if (hdr->evt != event) 7221 return false; 7222 return true; 7223 } 7224 7225 /* Check if request ended in Command Status - no way to retrieve 7226 * any extra parameters in this case. 7227 */ 7228 if (hdr->evt == HCI_EV_CMD_STATUS) 7229 return false; 7230 7231 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7232 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7233 hdr->evt); 7234 return false; 7235 } 7236 7237 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7238 if (!ev) 7239 return false; 7240 7241 if (opcode != __le16_to_cpu(ev->opcode)) { 7242 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7243 __le16_to_cpu(ev->opcode)); 7244 return false; 7245 } 7246 7247 return true; 7248 } 7249 7250 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7251 struct sk_buff *skb) 7252 { 7253 struct hci_ev_le_advertising_info *adv; 7254 struct hci_ev_le_direct_adv_info *direct_adv; 7255 struct hci_ev_le_ext_adv_info *ext_adv; 7256 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7257 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7258 7259 hci_dev_lock(hdev); 7260 7261 /* If we are currently suspended and this is the first BT event seen, 7262 * save the wake reason associated with the event. 7263 */ 7264 if (!hdev->suspended || hdev->wake_reason) 7265 goto unlock; 7266 7267 /* Default to remote wake. Values for wake_reason are documented in the 7268 * Bluez mgmt api docs. 7269 */ 7270 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7271 7272 /* Once configured for remote wakeup, we should only wake up for 7273 * reconnections. It's useful to see which device is waking us up so 7274 * keep track of the bdaddr of the connection event that woke us up. 7275 */ 7276 if (event == HCI_EV_CONN_REQUEST) { 7277 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7278 hdev->wake_addr_type = BDADDR_BREDR; 7279 } else if (event == HCI_EV_CONN_COMPLETE) { 7280 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7281 hdev->wake_addr_type = BDADDR_BREDR; 7282 } else if (event == HCI_EV_LE_META) { 7283 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7284 u8 subevent = le_ev->subevent; 7285 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7286 u8 num_reports = *ptr; 7287 7288 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7289 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7290 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7291 num_reports) { 7292 adv = (void *)(ptr + 1); 7293 direct_adv = (void *)(ptr + 1); 7294 ext_adv = (void *)(ptr + 1); 7295 7296 switch (subevent) { 7297 case HCI_EV_LE_ADVERTISING_REPORT: 7298 bacpy(&hdev->wake_addr, &adv->bdaddr); 7299 hdev->wake_addr_type = adv->bdaddr_type; 7300 break; 7301 case HCI_EV_LE_DIRECT_ADV_REPORT: 7302 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7303 hdev->wake_addr_type = direct_adv->bdaddr_type; 7304 break; 7305 case HCI_EV_LE_EXT_ADV_REPORT: 7306 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7307 hdev->wake_addr_type = ext_adv->bdaddr_type; 7308 break; 7309 } 7310 } 7311 } else { 7312 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7313 } 7314 7315 unlock: 7316 hci_dev_unlock(hdev); 7317 } 7318 7319 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7320 [_op] = { \ 7321 .req = false, \ 7322 .func = _func, \ 7323 .min_len = _min_len, \ 7324 .max_len = _max_len, \ 7325 } 7326 7327 #define HCI_EV(_op, _func, _len) \ 7328 HCI_EV_VL(_op, _func, _len, _len) 7329 7330 #define HCI_EV_STATUS(_op, _func) \ 7331 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7332 7333 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7334 [_op] = { \ 7335 .req = true, \ 7336 .func_req = _func, \ 7337 .min_len = _min_len, \ 7338 .max_len = _max_len, \ 7339 } 7340 7341 #define HCI_EV_REQ(_op, _func, _len) \ 7342 HCI_EV_REQ_VL(_op, _func, _len, _len) 7343 7344 /* Entries in this table shall have their position according to the event opcode 7345 * they handle so the use of the macros above is recommend since it does attempt 7346 * to initialize at its proper index using Designated Initializers that way 7347 * events without a callback function don't have entered. 7348 */ 7349 static const struct hci_ev { 7350 bool req; 7351 union { 7352 void (*func)(struct hci_dev *hdev, void *data, 7353 struct sk_buff *skb); 7354 void (*func_req)(struct hci_dev *hdev, void *data, 7355 struct sk_buff *skb, u16 *opcode, u8 *status, 7356 hci_req_complete_t *req_complete, 7357 hci_req_complete_skb_t *req_complete_skb); 7358 }; 7359 u16 min_len; 7360 u16 max_len; 7361 } hci_ev_table[U8_MAX + 1] = { 7362 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7363 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7364 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7365 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7366 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7367 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7368 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7369 sizeof(struct hci_ev_conn_complete)), 7370 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7371 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7372 sizeof(struct hci_ev_conn_request)), 7373 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7374 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7375 sizeof(struct hci_ev_disconn_complete)), 7376 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7377 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7378 sizeof(struct hci_ev_auth_complete)), 7379 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7380 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7381 sizeof(struct hci_ev_remote_name)), 7382 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7383 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7384 sizeof(struct hci_ev_encrypt_change)), 7385 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7386 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7387 hci_change_link_key_complete_evt, 7388 sizeof(struct hci_ev_change_link_key_complete)), 7389 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7390 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7391 sizeof(struct hci_ev_remote_features)), 7392 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7393 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7394 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7395 /* [0x0f = HCI_EV_CMD_STATUS] */ 7396 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7397 sizeof(struct hci_ev_cmd_status)), 7398 /* [0x10 = HCI_EV_CMD_STATUS] */ 7399 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7400 sizeof(struct hci_ev_hardware_error)), 7401 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7402 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7403 sizeof(struct hci_ev_role_change)), 7404 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7405 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7406 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7407 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7408 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7409 sizeof(struct hci_ev_mode_change)), 7410 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7411 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7412 sizeof(struct hci_ev_pin_code_req)), 7413 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7414 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7415 sizeof(struct hci_ev_link_key_req)), 7416 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7417 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7418 sizeof(struct hci_ev_link_key_notify)), 7419 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7420 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7421 sizeof(struct hci_ev_clock_offset)), 7422 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7423 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7424 sizeof(struct hci_ev_pkt_type_change)), 7425 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7426 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7427 sizeof(struct hci_ev_pscan_rep_mode)), 7428 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7429 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7430 hci_inquiry_result_with_rssi_evt, 7431 sizeof(struct hci_ev_inquiry_result_rssi), 7432 HCI_MAX_EVENT_SIZE), 7433 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7434 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7435 sizeof(struct hci_ev_remote_ext_features)), 7436 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7437 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7438 sizeof(struct hci_ev_sync_conn_complete)), 7439 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7440 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7441 hci_extended_inquiry_result_evt, 7442 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7443 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7444 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7445 sizeof(struct hci_ev_key_refresh_complete)), 7446 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7447 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7448 sizeof(struct hci_ev_io_capa_request)), 7449 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7450 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7451 sizeof(struct hci_ev_io_capa_reply)), 7452 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7453 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7454 sizeof(struct hci_ev_user_confirm_req)), 7455 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7456 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7457 sizeof(struct hci_ev_user_passkey_req)), 7458 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7459 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7460 sizeof(struct hci_ev_remote_oob_data_request)), 7461 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7462 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7463 sizeof(struct hci_ev_simple_pair_complete)), 7464 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7465 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7466 sizeof(struct hci_ev_user_passkey_notify)), 7467 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7468 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7469 sizeof(struct hci_ev_keypress_notify)), 7470 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7471 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7472 sizeof(struct hci_ev_remote_host_features)), 7473 /* [0x3e = HCI_EV_LE_META] */ 7474 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7475 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7476 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */ 7477 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt, 7478 sizeof(struct hci_ev_num_comp_blocks)), 7479 /* [0xff = HCI_EV_VENDOR] */ 7480 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7481 }; 7482 7483 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7484 u16 *opcode, u8 *status, 7485 hci_req_complete_t *req_complete, 7486 hci_req_complete_skb_t *req_complete_skb) 7487 { 7488 const struct hci_ev *ev = &hci_ev_table[event]; 7489 void *data; 7490 7491 if (!ev->func) 7492 return; 7493 7494 if (skb->len < ev->min_len) { 7495 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7496 event, skb->len, ev->min_len); 7497 return; 7498 } 7499 7500 /* Just warn if the length is over max_len size it still be 7501 * possible to partially parse the event so leave to callback to 7502 * decide if that is acceptable. 7503 */ 7504 if (skb->len > ev->max_len) 7505 bt_dev_warn_ratelimited(hdev, 7506 "unexpected event 0x%2.2x length: %u > %u", 7507 event, skb->len, ev->max_len); 7508 7509 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7510 if (!data) 7511 return; 7512 7513 if (ev->req) 7514 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7515 req_complete_skb); 7516 else 7517 ev->func(hdev, data, skb); 7518 } 7519 7520 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7521 { 7522 struct hci_event_hdr *hdr = (void *) skb->data; 7523 hci_req_complete_t req_complete = NULL; 7524 hci_req_complete_skb_t req_complete_skb = NULL; 7525 struct sk_buff *orig_skb = NULL; 7526 u8 status = 0, event, req_evt = 0; 7527 u16 opcode = HCI_OP_NOP; 7528 7529 if (skb->len < sizeof(*hdr)) { 7530 bt_dev_err(hdev, "Malformed HCI Event"); 7531 goto done; 7532 } 7533 7534 kfree_skb(hdev->recv_event); 7535 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7536 7537 event = hdr->evt; 7538 if (!event) { 7539 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7540 event); 7541 goto done; 7542 } 7543 7544 /* Only match event if command OGF is not for LE */ 7545 if (hdev->req_skb && 7546 hci_opcode_ogf(hci_skb_opcode(hdev->req_skb)) != 0x08 && 7547 hci_skb_event(hdev->req_skb) == event) { 7548 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->req_skb), 7549 status, &req_complete, &req_complete_skb); 7550 req_evt = event; 7551 } 7552 7553 /* If it looks like we might end up having to call 7554 * req_complete_skb, store a pristine copy of the skb since the 7555 * various handlers may modify the original one through 7556 * skb_pull() calls, etc. 7557 */ 7558 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7559 event == HCI_EV_CMD_COMPLETE) 7560 orig_skb = skb_clone(skb, GFP_KERNEL); 7561 7562 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7563 7564 /* Store wake reason if we're suspended */ 7565 hci_store_wake_reason(hdev, event, skb); 7566 7567 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7568 7569 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7570 &req_complete_skb); 7571 7572 if (req_complete) { 7573 req_complete(hdev, status, opcode); 7574 } else if (req_complete_skb) { 7575 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7576 kfree_skb(orig_skb); 7577 orig_skb = NULL; 7578 } 7579 req_complete_skb(hdev, status, opcode, orig_skb); 7580 } 7581 7582 done: 7583 kfree_skb(orig_skb); 7584 kfree_skb(skb); 7585 hdev->stat.evt_rx++; 7586 } 7587