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 "a2mp.h" 40 #include "amp.h" 41 #include "smp.h" 42 #include "msft.h" 43 #include "eir.h" 44 45 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ 46 "\x00\x00\x00\x00\x00\x00\x00\x00" 47 48 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000) 49 50 /* Handle HCI Event packets */ 51 52 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 53 u8 ev, size_t len) 54 { 55 void *data; 56 57 data = skb_pull_data(skb, len); 58 if (!data) 59 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev); 60 61 return data; 62 } 63 64 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 65 u16 op, size_t len) 66 { 67 void *data; 68 69 data = skb_pull_data(skb, len); 70 if (!data) 71 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op); 72 73 return data; 74 } 75 76 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 77 u8 ev, size_t len) 78 { 79 void *data; 80 81 data = skb_pull_data(skb, len); 82 if (!data) 83 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev); 84 85 return data; 86 } 87 88 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data, 89 struct sk_buff *skb) 90 { 91 struct hci_ev_status *rp = data; 92 93 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 94 95 /* It is possible that we receive Inquiry Complete event right 96 * before we receive Inquiry Cancel Command Complete event, in 97 * which case the latter event should have status of Command 98 * Disallowed (0x0c). This should not be treated as error, since 99 * we actually achieve what Inquiry Cancel wants to achieve, 100 * which is to end the last Inquiry session. 101 */ 102 if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) { 103 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command"); 104 rp->status = 0x00; 105 } 106 107 if (rp->status) 108 return rp->status; 109 110 clear_bit(HCI_INQUIRY, &hdev->flags); 111 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 112 wake_up_bit(&hdev->flags, HCI_INQUIRY); 113 114 hci_dev_lock(hdev); 115 /* Set discovery state to stopped if we're not doing LE active 116 * scanning. 117 */ 118 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 119 hdev->le_scan_type != LE_SCAN_ACTIVE) 120 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 121 hci_dev_unlock(hdev); 122 123 hci_conn_check_pending(hdev); 124 125 return rp->status; 126 } 127 128 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data, 129 struct sk_buff *skb) 130 { 131 struct hci_ev_status *rp = data; 132 133 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 134 135 if (rp->status) 136 return rp->status; 137 138 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ); 139 140 return rp->status; 141 } 142 143 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data, 144 struct sk_buff *skb) 145 { 146 struct hci_ev_status *rp = data; 147 148 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 149 150 if (rp->status) 151 return rp->status; 152 153 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); 154 155 hci_conn_check_pending(hdev); 156 157 return rp->status; 158 } 159 160 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data, 161 struct sk_buff *skb) 162 { 163 struct hci_ev_status *rp = data; 164 165 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 166 167 return rp->status; 168 } 169 170 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data, 171 struct sk_buff *skb) 172 { 173 struct hci_rp_role_discovery *rp = data; 174 struct hci_conn *conn; 175 176 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 177 178 if (rp->status) 179 return rp->status; 180 181 hci_dev_lock(hdev); 182 183 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 184 if (conn) 185 conn->role = rp->role; 186 187 hci_dev_unlock(hdev); 188 189 return rp->status; 190 } 191 192 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data, 193 struct sk_buff *skb) 194 { 195 struct hci_rp_read_link_policy *rp = data; 196 struct hci_conn *conn; 197 198 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 199 200 if (rp->status) 201 return rp->status; 202 203 hci_dev_lock(hdev); 204 205 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 206 if (conn) 207 conn->link_policy = __le16_to_cpu(rp->policy); 208 209 hci_dev_unlock(hdev); 210 211 return rp->status; 212 } 213 214 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data, 215 struct sk_buff *skb) 216 { 217 struct hci_rp_write_link_policy *rp = data; 218 struct hci_conn *conn; 219 void *sent; 220 221 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 222 223 if (rp->status) 224 return rp->status; 225 226 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY); 227 if (!sent) 228 return rp->status; 229 230 hci_dev_lock(hdev); 231 232 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 233 if (conn) 234 conn->link_policy = get_unaligned_le16(sent + 2); 235 236 hci_dev_unlock(hdev); 237 238 return rp->status; 239 } 240 241 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data, 242 struct sk_buff *skb) 243 { 244 struct hci_rp_read_def_link_policy *rp = data; 245 246 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 247 248 if (rp->status) 249 return rp->status; 250 251 hdev->link_policy = __le16_to_cpu(rp->policy); 252 253 return rp->status; 254 } 255 256 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data, 257 struct sk_buff *skb) 258 { 259 struct hci_ev_status *rp = data; 260 void *sent; 261 262 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 263 264 if (rp->status) 265 return rp->status; 266 267 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY); 268 if (!sent) 269 return rp->status; 270 271 hdev->link_policy = get_unaligned_le16(sent); 272 273 return rp->status; 274 } 275 276 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb) 277 { 278 struct hci_ev_status *rp = data; 279 280 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 281 282 clear_bit(HCI_RESET, &hdev->flags); 283 284 if (rp->status) 285 return rp->status; 286 287 /* Reset all non-persistent flags */ 288 hci_dev_clear_volatile_flags(hdev); 289 290 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 291 292 hdev->inq_tx_power = HCI_TX_POWER_INVALID; 293 hdev->adv_tx_power = HCI_TX_POWER_INVALID; 294 295 memset(hdev->adv_data, 0, sizeof(hdev->adv_data)); 296 hdev->adv_data_len = 0; 297 298 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data)); 299 hdev->scan_rsp_data_len = 0; 300 301 hdev->le_scan_type = LE_SCAN_PASSIVE; 302 303 hdev->ssp_debug_mode = 0; 304 305 hci_bdaddr_list_clear(&hdev->le_accept_list); 306 hci_bdaddr_list_clear(&hdev->le_resolv_list); 307 308 return rp->status; 309 } 310 311 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data, 312 struct sk_buff *skb) 313 { 314 struct hci_rp_read_stored_link_key *rp = data; 315 struct hci_cp_read_stored_link_key *sent; 316 317 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 318 319 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY); 320 if (!sent) 321 return rp->status; 322 323 if (!rp->status && sent->read_all == 0x01) { 324 hdev->stored_max_keys = le16_to_cpu(rp->max_keys); 325 hdev->stored_num_keys = le16_to_cpu(rp->num_keys); 326 } 327 328 return rp->status; 329 } 330 331 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data, 332 struct sk_buff *skb) 333 { 334 struct hci_rp_delete_stored_link_key *rp = data; 335 u16 num_keys; 336 337 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 338 339 if (rp->status) 340 return rp->status; 341 342 num_keys = le16_to_cpu(rp->num_keys); 343 344 if (num_keys <= hdev->stored_num_keys) 345 hdev->stored_num_keys -= num_keys; 346 else 347 hdev->stored_num_keys = 0; 348 349 return rp->status; 350 } 351 352 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data, 353 struct sk_buff *skb) 354 { 355 struct hci_ev_status *rp = data; 356 void *sent; 357 358 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 359 360 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME); 361 if (!sent) 362 return rp->status; 363 364 hci_dev_lock(hdev); 365 366 if (hci_dev_test_flag(hdev, HCI_MGMT)) 367 mgmt_set_local_name_complete(hdev, sent, rp->status); 368 else if (!rp->status) 369 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); 370 371 hci_dev_unlock(hdev); 372 373 return rp->status; 374 } 375 376 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data, 377 struct sk_buff *skb) 378 { 379 struct hci_rp_read_local_name *rp = data; 380 381 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 382 383 if (rp->status) 384 return rp->status; 385 386 if (hci_dev_test_flag(hdev, HCI_SETUP) || 387 hci_dev_test_flag(hdev, HCI_CONFIG)) 388 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH); 389 390 return rp->status; 391 } 392 393 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data, 394 struct sk_buff *skb) 395 { 396 struct hci_ev_status *rp = data; 397 void *sent; 398 399 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 400 401 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE); 402 if (!sent) 403 return rp->status; 404 405 hci_dev_lock(hdev); 406 407 if (!rp->status) { 408 __u8 param = *((__u8 *) sent); 409 410 if (param == AUTH_ENABLED) 411 set_bit(HCI_AUTH, &hdev->flags); 412 else 413 clear_bit(HCI_AUTH, &hdev->flags); 414 } 415 416 if (hci_dev_test_flag(hdev, HCI_MGMT)) 417 mgmt_auth_enable_complete(hdev, rp->status); 418 419 hci_dev_unlock(hdev); 420 421 return rp->status; 422 } 423 424 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data, 425 struct sk_buff *skb) 426 { 427 struct hci_ev_status *rp = data; 428 __u8 param; 429 void *sent; 430 431 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 432 433 if (rp->status) 434 return rp->status; 435 436 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE); 437 if (!sent) 438 return rp->status; 439 440 param = *((__u8 *) sent); 441 442 if (param) 443 set_bit(HCI_ENCRYPT, &hdev->flags); 444 else 445 clear_bit(HCI_ENCRYPT, &hdev->flags); 446 447 return rp->status; 448 } 449 450 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data, 451 struct sk_buff *skb) 452 { 453 struct hci_ev_status *rp = data; 454 __u8 param; 455 void *sent; 456 457 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 458 459 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE); 460 if (!sent) 461 return rp->status; 462 463 param = *((__u8 *) sent); 464 465 hci_dev_lock(hdev); 466 467 if (rp->status) { 468 hdev->discov_timeout = 0; 469 goto done; 470 } 471 472 if (param & SCAN_INQUIRY) 473 set_bit(HCI_ISCAN, &hdev->flags); 474 else 475 clear_bit(HCI_ISCAN, &hdev->flags); 476 477 if (param & SCAN_PAGE) 478 set_bit(HCI_PSCAN, &hdev->flags); 479 else 480 clear_bit(HCI_PSCAN, &hdev->flags); 481 482 done: 483 hci_dev_unlock(hdev); 484 485 return rp->status; 486 } 487 488 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data, 489 struct sk_buff *skb) 490 { 491 struct hci_ev_status *rp = data; 492 struct hci_cp_set_event_filter *cp; 493 void *sent; 494 495 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 496 497 if (rp->status) 498 return rp->status; 499 500 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT); 501 if (!sent) 502 return rp->status; 503 504 cp = (struct hci_cp_set_event_filter *)sent; 505 506 if (cp->flt_type == HCI_FLT_CLEAR_ALL) 507 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 508 else 509 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 510 511 return rp->status; 512 } 513 514 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data, 515 struct sk_buff *skb) 516 { 517 struct hci_rp_read_class_of_dev *rp = data; 518 519 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 520 521 if (rp->status) 522 return rp->status; 523 524 memcpy(hdev->dev_class, rp->dev_class, 3); 525 526 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2], 527 hdev->dev_class[1], hdev->dev_class[0]); 528 529 return rp->status; 530 } 531 532 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data, 533 struct sk_buff *skb) 534 { 535 struct hci_ev_status *rp = data; 536 void *sent; 537 538 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 539 540 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV); 541 if (!sent) 542 return rp->status; 543 544 hci_dev_lock(hdev); 545 546 if (!rp->status) 547 memcpy(hdev->dev_class, sent, 3); 548 549 if (hci_dev_test_flag(hdev, HCI_MGMT)) 550 mgmt_set_class_of_dev_complete(hdev, sent, rp->status); 551 552 hci_dev_unlock(hdev); 553 554 return rp->status; 555 } 556 557 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data, 558 struct sk_buff *skb) 559 { 560 struct hci_rp_read_voice_setting *rp = data; 561 __u16 setting; 562 563 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 564 565 if (rp->status) 566 return rp->status; 567 568 setting = __le16_to_cpu(rp->voice_setting); 569 570 if (hdev->voice_setting == setting) 571 return rp->status; 572 573 hdev->voice_setting = setting; 574 575 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 576 577 if (hdev->notify) 578 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 579 580 return rp->status; 581 } 582 583 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data, 584 struct sk_buff *skb) 585 { 586 struct hci_ev_status *rp = data; 587 __u16 setting; 588 void *sent; 589 590 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 591 592 if (rp->status) 593 return rp->status; 594 595 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING); 596 if (!sent) 597 return rp->status; 598 599 setting = get_unaligned_le16(sent); 600 601 if (hdev->voice_setting == setting) 602 return rp->status; 603 604 hdev->voice_setting = setting; 605 606 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 607 608 if (hdev->notify) 609 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 610 611 return rp->status; 612 } 613 614 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data, 615 struct sk_buff *skb) 616 { 617 struct hci_rp_read_num_supported_iac *rp = data; 618 619 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 620 621 if (rp->status) 622 return rp->status; 623 624 hdev->num_iac = rp->num_iac; 625 626 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac); 627 628 return rp->status; 629 } 630 631 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data, 632 struct sk_buff *skb) 633 { 634 struct hci_ev_status *rp = data; 635 struct hci_cp_write_ssp_mode *sent; 636 637 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 638 639 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE); 640 if (!sent) 641 return rp->status; 642 643 hci_dev_lock(hdev); 644 645 if (!rp->status) { 646 if (sent->mode) 647 hdev->features[1][0] |= LMP_HOST_SSP; 648 else 649 hdev->features[1][0] &= ~LMP_HOST_SSP; 650 } 651 652 if (!rp->status) { 653 if (sent->mode) 654 hci_dev_set_flag(hdev, HCI_SSP_ENABLED); 655 else 656 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); 657 } 658 659 hci_dev_unlock(hdev); 660 661 return rp->status; 662 } 663 664 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data, 665 struct sk_buff *skb) 666 { 667 struct hci_ev_status *rp = data; 668 struct hci_cp_write_sc_support *sent; 669 670 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 671 672 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT); 673 if (!sent) 674 return rp->status; 675 676 hci_dev_lock(hdev); 677 678 if (!rp->status) { 679 if (sent->support) 680 hdev->features[1][0] |= LMP_HOST_SC; 681 else 682 hdev->features[1][0] &= ~LMP_HOST_SC; 683 } 684 685 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) { 686 if (sent->support) 687 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 688 else 689 hci_dev_clear_flag(hdev, HCI_SC_ENABLED); 690 } 691 692 hci_dev_unlock(hdev); 693 694 return rp->status; 695 } 696 697 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data, 698 struct sk_buff *skb) 699 { 700 struct hci_rp_read_local_version *rp = data; 701 702 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 703 704 if (rp->status) 705 return rp->status; 706 707 if (hci_dev_test_flag(hdev, HCI_SETUP) || 708 hci_dev_test_flag(hdev, HCI_CONFIG)) { 709 hdev->hci_ver = rp->hci_ver; 710 hdev->hci_rev = __le16_to_cpu(rp->hci_rev); 711 hdev->lmp_ver = rp->lmp_ver; 712 hdev->manufacturer = __le16_to_cpu(rp->manufacturer); 713 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver); 714 } 715 716 return rp->status; 717 } 718 719 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data, 720 struct sk_buff *skb) 721 { 722 struct hci_rp_read_enc_key_size *rp = data; 723 struct hci_conn *conn; 724 u16 handle; 725 u8 status = rp->status; 726 727 bt_dev_dbg(hdev, "status 0x%2.2x", status); 728 729 handle = le16_to_cpu(rp->handle); 730 731 hci_dev_lock(hdev); 732 733 conn = hci_conn_hash_lookup_handle(hdev, handle); 734 if (!conn) { 735 status = 0xFF; 736 goto done; 737 } 738 739 /* While unexpected, the read_enc_key_size command may fail. The most 740 * secure approach is to then assume the key size is 0 to force a 741 * disconnection. 742 */ 743 if (status) { 744 bt_dev_err(hdev, "failed to read key size for handle %u", 745 handle); 746 conn->enc_key_size = 0; 747 } else { 748 conn->enc_key_size = rp->key_size; 749 status = 0; 750 } 751 752 hci_encrypt_cfm(conn, 0); 753 754 done: 755 hci_dev_unlock(hdev); 756 757 return status; 758 } 759 760 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data, 761 struct sk_buff *skb) 762 { 763 struct hci_rp_read_local_commands *rp = data; 764 765 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 766 767 if (rp->status) 768 return rp->status; 769 770 if (hci_dev_test_flag(hdev, HCI_SETUP) || 771 hci_dev_test_flag(hdev, HCI_CONFIG)) 772 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); 773 774 return rp->status; 775 } 776 777 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data, 778 struct sk_buff *skb) 779 { 780 struct hci_rp_read_auth_payload_to *rp = data; 781 struct hci_conn *conn; 782 783 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 784 785 if (rp->status) 786 return rp->status; 787 788 hci_dev_lock(hdev); 789 790 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 791 if (conn) 792 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); 793 794 hci_dev_unlock(hdev); 795 796 return rp->status; 797 } 798 799 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data, 800 struct sk_buff *skb) 801 { 802 struct hci_rp_write_auth_payload_to *rp = data; 803 struct hci_conn *conn; 804 void *sent; 805 806 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 807 808 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); 809 if (!sent) 810 return rp->status; 811 812 hci_dev_lock(hdev); 813 814 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 815 if (!conn) { 816 rp->status = 0xff; 817 goto unlock; 818 } 819 820 if (!rp->status) 821 conn->auth_payload_timeout = get_unaligned_le16(sent + 2); 822 823 hci_encrypt_cfm(conn, 0); 824 825 unlock: 826 hci_dev_unlock(hdev); 827 828 return rp->status; 829 } 830 831 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data, 832 struct sk_buff *skb) 833 { 834 struct hci_rp_read_local_features *rp = data; 835 836 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 837 838 if (rp->status) 839 return rp->status; 840 841 memcpy(hdev->features, rp->features, 8); 842 843 /* Adjust default settings according to features 844 * supported by device. */ 845 846 if (hdev->features[0][0] & LMP_3SLOT) 847 hdev->pkt_type |= (HCI_DM3 | HCI_DH3); 848 849 if (hdev->features[0][0] & LMP_5SLOT) 850 hdev->pkt_type |= (HCI_DM5 | HCI_DH5); 851 852 if (hdev->features[0][1] & LMP_HV2) { 853 hdev->pkt_type |= (HCI_HV2); 854 hdev->esco_type |= (ESCO_HV2); 855 } 856 857 if (hdev->features[0][1] & LMP_HV3) { 858 hdev->pkt_type |= (HCI_HV3); 859 hdev->esco_type |= (ESCO_HV3); 860 } 861 862 if (lmp_esco_capable(hdev)) 863 hdev->esco_type |= (ESCO_EV3); 864 865 if (hdev->features[0][4] & LMP_EV4) 866 hdev->esco_type |= (ESCO_EV4); 867 868 if (hdev->features[0][4] & LMP_EV5) 869 hdev->esco_type |= (ESCO_EV5); 870 871 if (hdev->features[0][5] & LMP_EDR_ESCO_2M) 872 hdev->esco_type |= (ESCO_2EV3); 873 874 if (hdev->features[0][5] & LMP_EDR_ESCO_3M) 875 hdev->esco_type |= (ESCO_3EV3); 876 877 if (hdev->features[0][5] & LMP_EDR_3S_ESCO) 878 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); 879 880 return rp->status; 881 } 882 883 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data, 884 struct sk_buff *skb) 885 { 886 struct hci_rp_read_local_ext_features *rp = data; 887 888 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 889 890 if (rp->status) 891 return rp->status; 892 893 if (hdev->max_page < rp->max_page) { 894 if (test_bit(HCI_QUIRK_BROKEN_LOCAL_EXT_FEATURES_PAGE_2, 895 &hdev->quirks)) 896 bt_dev_warn(hdev, "broken local ext features page 2"); 897 else 898 hdev->max_page = rp->max_page; 899 } 900 901 if (rp->page < HCI_MAX_PAGES) 902 memcpy(hdev->features[rp->page], rp->features, 8); 903 904 return rp->status; 905 } 906 907 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data, 908 struct sk_buff *skb) 909 { 910 struct hci_rp_read_flow_control_mode *rp = data; 911 912 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 913 914 if (rp->status) 915 return rp->status; 916 917 hdev->flow_ctl_mode = rp->mode; 918 919 return rp->status; 920 } 921 922 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, 923 struct sk_buff *skb) 924 { 925 struct hci_rp_read_buffer_size *rp = data; 926 927 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 928 929 if (rp->status) 930 return rp->status; 931 932 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); 933 hdev->sco_mtu = rp->sco_mtu; 934 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); 935 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); 936 937 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { 938 hdev->sco_mtu = 64; 939 hdev->sco_pkts = 8; 940 } 941 942 hdev->acl_cnt = hdev->acl_pkts; 943 hdev->sco_cnt = hdev->sco_pkts; 944 945 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, 946 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); 947 948 return rp->status; 949 } 950 951 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data, 952 struct sk_buff *skb) 953 { 954 struct hci_rp_read_bd_addr *rp = data; 955 956 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 957 958 if (rp->status) 959 return rp->status; 960 961 if (test_bit(HCI_INIT, &hdev->flags)) 962 bacpy(&hdev->bdaddr, &rp->bdaddr); 963 964 if (hci_dev_test_flag(hdev, HCI_SETUP)) 965 bacpy(&hdev->setup_addr, &rp->bdaddr); 966 967 return rp->status; 968 } 969 970 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data, 971 struct sk_buff *skb) 972 { 973 struct hci_rp_read_local_pairing_opts *rp = data; 974 975 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 976 977 if (rp->status) 978 return rp->status; 979 980 if (hci_dev_test_flag(hdev, HCI_SETUP) || 981 hci_dev_test_flag(hdev, HCI_CONFIG)) { 982 hdev->pairing_opts = rp->pairing_opts; 983 hdev->max_enc_key_size = rp->max_key_size; 984 } 985 986 return rp->status; 987 } 988 989 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data, 990 struct sk_buff *skb) 991 { 992 struct hci_rp_read_page_scan_activity *rp = data; 993 994 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 995 996 if (rp->status) 997 return rp->status; 998 999 if (test_bit(HCI_INIT, &hdev->flags)) { 1000 hdev->page_scan_interval = __le16_to_cpu(rp->interval); 1001 hdev->page_scan_window = __le16_to_cpu(rp->window); 1002 } 1003 1004 return rp->status; 1005 } 1006 1007 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data, 1008 struct sk_buff *skb) 1009 { 1010 struct hci_ev_status *rp = data; 1011 struct hci_cp_write_page_scan_activity *sent; 1012 1013 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1014 1015 if (rp->status) 1016 return rp->status; 1017 1018 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); 1019 if (!sent) 1020 return rp->status; 1021 1022 hdev->page_scan_interval = __le16_to_cpu(sent->interval); 1023 hdev->page_scan_window = __le16_to_cpu(sent->window); 1024 1025 return rp->status; 1026 } 1027 1028 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data, 1029 struct sk_buff *skb) 1030 { 1031 struct hci_rp_read_page_scan_type *rp = data; 1032 1033 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1034 1035 if (rp->status) 1036 return rp->status; 1037 1038 if (test_bit(HCI_INIT, &hdev->flags)) 1039 hdev->page_scan_type = rp->type; 1040 1041 return rp->status; 1042 } 1043 1044 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data, 1045 struct sk_buff *skb) 1046 { 1047 struct hci_ev_status *rp = data; 1048 u8 *type; 1049 1050 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1051 1052 if (rp->status) 1053 return rp->status; 1054 1055 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); 1056 if (type) 1057 hdev->page_scan_type = *type; 1058 1059 return rp->status; 1060 } 1061 1062 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data, 1063 struct sk_buff *skb) 1064 { 1065 struct hci_rp_read_data_block_size *rp = data; 1066 1067 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1068 1069 if (rp->status) 1070 return rp->status; 1071 1072 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len); 1073 hdev->block_len = __le16_to_cpu(rp->block_len); 1074 hdev->num_blocks = __le16_to_cpu(rp->num_blocks); 1075 1076 hdev->block_cnt = hdev->num_blocks; 1077 1078 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu, 1079 hdev->block_cnt, hdev->block_len); 1080 1081 return rp->status; 1082 } 1083 1084 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, 1085 struct sk_buff *skb) 1086 { 1087 struct hci_rp_read_clock *rp = data; 1088 struct hci_cp_read_clock *cp; 1089 struct hci_conn *conn; 1090 1091 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1092 1093 if (rp->status) 1094 return rp->status; 1095 1096 hci_dev_lock(hdev); 1097 1098 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 1099 if (!cp) 1100 goto unlock; 1101 1102 if (cp->which == 0x00) { 1103 hdev->clock = le32_to_cpu(rp->clock); 1104 goto unlock; 1105 } 1106 1107 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1108 if (conn) { 1109 conn->clock = le32_to_cpu(rp->clock); 1110 conn->clock_accuracy = le16_to_cpu(rp->accuracy); 1111 } 1112 1113 unlock: 1114 hci_dev_unlock(hdev); 1115 return rp->status; 1116 } 1117 1118 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data, 1119 struct sk_buff *skb) 1120 { 1121 struct hci_rp_read_local_amp_info *rp = data; 1122 1123 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1124 1125 if (rp->status) 1126 return rp->status; 1127 1128 hdev->amp_status = rp->amp_status; 1129 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw); 1130 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw); 1131 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency); 1132 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu); 1133 hdev->amp_type = rp->amp_type; 1134 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap); 1135 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size); 1136 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to); 1137 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to); 1138 1139 return rp->status; 1140 } 1141 1142 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, 1143 struct sk_buff *skb) 1144 { 1145 struct hci_rp_read_inq_rsp_tx_power *rp = data; 1146 1147 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1148 1149 if (rp->status) 1150 return rp->status; 1151 1152 hdev->inq_tx_power = rp->tx_power; 1153 1154 return rp->status; 1155 } 1156 1157 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, 1158 struct sk_buff *skb) 1159 { 1160 struct hci_rp_read_def_err_data_reporting *rp = data; 1161 1162 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1163 1164 if (rp->status) 1165 return rp->status; 1166 1167 hdev->err_data_reporting = rp->err_data_reporting; 1168 1169 return rp->status; 1170 } 1171 1172 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, 1173 struct sk_buff *skb) 1174 { 1175 struct hci_ev_status *rp = data; 1176 struct hci_cp_write_def_err_data_reporting *cp; 1177 1178 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1179 1180 if (rp->status) 1181 return rp->status; 1182 1183 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); 1184 if (!cp) 1185 return rp->status; 1186 1187 hdev->err_data_reporting = cp->err_data_reporting; 1188 1189 return rp->status; 1190 } 1191 1192 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, 1193 struct sk_buff *skb) 1194 { 1195 struct hci_rp_pin_code_reply *rp = data; 1196 struct hci_cp_pin_code_reply *cp; 1197 struct hci_conn *conn; 1198 1199 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1200 1201 hci_dev_lock(hdev); 1202 1203 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1204 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); 1205 1206 if (rp->status) 1207 goto unlock; 1208 1209 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); 1210 if (!cp) 1211 goto unlock; 1212 1213 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 1214 if (conn) 1215 conn->pin_length = cp->pin_len; 1216 1217 unlock: 1218 hci_dev_unlock(hdev); 1219 return rp->status; 1220 } 1221 1222 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, 1223 struct sk_buff *skb) 1224 { 1225 struct hci_rp_pin_code_neg_reply *rp = data; 1226 1227 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1228 1229 hci_dev_lock(hdev); 1230 1231 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1232 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, 1233 rp->status); 1234 1235 hci_dev_unlock(hdev); 1236 1237 return rp->status; 1238 } 1239 1240 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, 1241 struct sk_buff *skb) 1242 { 1243 struct hci_rp_le_read_buffer_size *rp = data; 1244 1245 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1246 1247 if (rp->status) 1248 return rp->status; 1249 1250 hdev->le_mtu = __le16_to_cpu(rp->le_mtu); 1251 hdev->le_pkts = rp->le_max_pkt; 1252 1253 hdev->le_cnt = hdev->le_pkts; 1254 1255 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); 1256 1257 return rp->status; 1258 } 1259 1260 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, 1261 struct sk_buff *skb) 1262 { 1263 struct hci_rp_le_read_local_features *rp = data; 1264 1265 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1266 1267 if (rp->status) 1268 return rp->status; 1269 1270 memcpy(hdev->le_features, rp->features, 8); 1271 1272 return rp->status; 1273 } 1274 1275 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, 1276 struct sk_buff *skb) 1277 { 1278 struct hci_rp_le_read_adv_tx_power *rp = data; 1279 1280 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1281 1282 if (rp->status) 1283 return rp->status; 1284 1285 hdev->adv_tx_power = rp->tx_power; 1286 1287 return rp->status; 1288 } 1289 1290 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, 1291 struct sk_buff *skb) 1292 { 1293 struct hci_rp_user_confirm_reply *rp = data; 1294 1295 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1296 1297 hci_dev_lock(hdev); 1298 1299 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1300 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, 1301 rp->status); 1302 1303 hci_dev_unlock(hdev); 1304 1305 return rp->status; 1306 } 1307 1308 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, 1309 struct sk_buff *skb) 1310 { 1311 struct hci_rp_user_confirm_reply *rp = data; 1312 1313 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1314 1315 hci_dev_lock(hdev); 1316 1317 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1318 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, 1319 ACL_LINK, 0, rp->status); 1320 1321 hci_dev_unlock(hdev); 1322 1323 return rp->status; 1324 } 1325 1326 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, 1327 struct sk_buff *skb) 1328 { 1329 struct hci_rp_user_confirm_reply *rp = data; 1330 1331 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1332 1333 hci_dev_lock(hdev); 1334 1335 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1336 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 1337 0, rp->status); 1338 1339 hci_dev_unlock(hdev); 1340 1341 return rp->status; 1342 } 1343 1344 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, 1345 struct sk_buff *skb) 1346 { 1347 struct hci_rp_user_confirm_reply *rp = data; 1348 1349 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1350 1351 hci_dev_lock(hdev); 1352 1353 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1354 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, 1355 ACL_LINK, 0, rp->status); 1356 1357 hci_dev_unlock(hdev); 1358 1359 return rp->status; 1360 } 1361 1362 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, 1363 struct sk_buff *skb) 1364 { 1365 struct hci_rp_read_local_oob_data *rp = data; 1366 1367 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1368 1369 return rp->status; 1370 } 1371 1372 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, 1373 struct sk_buff *skb) 1374 { 1375 struct hci_rp_read_local_oob_ext_data *rp = data; 1376 1377 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1378 1379 return rp->status; 1380 } 1381 1382 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, 1383 struct sk_buff *skb) 1384 { 1385 struct hci_ev_status *rp = data; 1386 bdaddr_t *sent; 1387 1388 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1389 1390 if (rp->status) 1391 return rp->status; 1392 1393 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); 1394 if (!sent) 1395 return rp->status; 1396 1397 hci_dev_lock(hdev); 1398 1399 bacpy(&hdev->random_addr, sent); 1400 1401 if (!bacmp(&hdev->rpa, sent)) { 1402 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 1403 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, 1404 secs_to_jiffies(hdev->rpa_timeout)); 1405 } 1406 1407 hci_dev_unlock(hdev); 1408 1409 return rp->status; 1410 } 1411 1412 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, 1413 struct sk_buff *skb) 1414 { 1415 struct hci_ev_status *rp = data; 1416 struct hci_cp_le_set_default_phy *cp; 1417 1418 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1419 1420 if (rp->status) 1421 return rp->status; 1422 1423 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); 1424 if (!cp) 1425 return rp->status; 1426 1427 hci_dev_lock(hdev); 1428 1429 hdev->le_tx_def_phys = cp->tx_phys; 1430 hdev->le_rx_def_phys = cp->rx_phys; 1431 1432 hci_dev_unlock(hdev); 1433 1434 return rp->status; 1435 } 1436 1437 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, 1438 struct sk_buff *skb) 1439 { 1440 struct hci_ev_status *rp = data; 1441 struct hci_cp_le_set_adv_set_rand_addr *cp; 1442 struct adv_info *adv; 1443 1444 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1445 1446 if (rp->status) 1447 return rp->status; 1448 1449 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); 1450 /* Update only in case the adv instance since handle 0x00 shall be using 1451 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and 1452 * non-extended adverting. 1453 */ 1454 if (!cp || !cp->handle) 1455 return rp->status; 1456 1457 hci_dev_lock(hdev); 1458 1459 adv = hci_find_adv_instance(hdev, cp->handle); 1460 if (adv) { 1461 bacpy(&adv->random_addr, &cp->bdaddr); 1462 if (!bacmp(&hdev->rpa, &cp->bdaddr)) { 1463 adv->rpa_expired = false; 1464 queue_delayed_work(hdev->workqueue, 1465 &adv->rpa_expired_cb, 1466 secs_to_jiffies(hdev->rpa_timeout)); 1467 } 1468 } 1469 1470 hci_dev_unlock(hdev); 1471 1472 return rp->status; 1473 } 1474 1475 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, 1476 struct sk_buff *skb) 1477 { 1478 struct hci_ev_status *rp = data; 1479 u8 *instance; 1480 int err; 1481 1482 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1483 1484 if (rp->status) 1485 return rp->status; 1486 1487 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); 1488 if (!instance) 1489 return rp->status; 1490 1491 hci_dev_lock(hdev); 1492 1493 err = hci_remove_adv_instance(hdev, *instance); 1494 if (!err) 1495 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, 1496 *instance); 1497 1498 hci_dev_unlock(hdev); 1499 1500 return rp->status; 1501 } 1502 1503 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, 1504 struct sk_buff *skb) 1505 { 1506 struct hci_ev_status *rp = data; 1507 struct adv_info *adv, *n; 1508 int err; 1509 1510 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1511 1512 if (rp->status) 1513 return rp->status; 1514 1515 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) 1516 return rp->status; 1517 1518 hci_dev_lock(hdev); 1519 1520 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 1521 u8 instance = adv->instance; 1522 1523 err = hci_remove_adv_instance(hdev, instance); 1524 if (!err) 1525 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), 1526 hdev, instance); 1527 } 1528 1529 hci_dev_unlock(hdev); 1530 1531 return rp->status; 1532 } 1533 1534 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, 1535 struct sk_buff *skb) 1536 { 1537 struct hci_rp_le_read_transmit_power *rp = data; 1538 1539 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1540 1541 if (rp->status) 1542 return rp->status; 1543 1544 hdev->min_le_tx_power = rp->min_le_tx_power; 1545 hdev->max_le_tx_power = rp->max_le_tx_power; 1546 1547 return rp->status; 1548 } 1549 1550 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, 1551 struct sk_buff *skb) 1552 { 1553 struct hci_ev_status *rp = data; 1554 struct hci_cp_le_set_privacy_mode *cp; 1555 struct hci_conn_params *params; 1556 1557 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1558 1559 if (rp->status) 1560 return rp->status; 1561 1562 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); 1563 if (!cp) 1564 return rp->status; 1565 1566 hci_dev_lock(hdev); 1567 1568 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); 1569 if (params) 1570 WRITE_ONCE(params->privacy_mode, cp->mode); 1571 1572 hci_dev_unlock(hdev); 1573 1574 return rp->status; 1575 } 1576 1577 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, 1578 struct sk_buff *skb) 1579 { 1580 struct hci_ev_status *rp = data; 1581 __u8 *sent; 1582 1583 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1584 1585 if (rp->status) 1586 return rp->status; 1587 1588 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); 1589 if (!sent) 1590 return rp->status; 1591 1592 hci_dev_lock(hdev); 1593 1594 /* If we're doing connection initiation as peripheral. Set a 1595 * timeout in case something goes wrong. 1596 */ 1597 if (*sent) { 1598 struct hci_conn *conn; 1599 1600 hci_dev_set_flag(hdev, HCI_LE_ADV); 1601 1602 conn = hci_lookup_le_connect(hdev); 1603 if (conn) 1604 queue_delayed_work(hdev->workqueue, 1605 &conn->le_conn_timeout, 1606 conn->conn_timeout); 1607 } else { 1608 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1609 } 1610 1611 hci_dev_unlock(hdev); 1612 1613 return rp->status; 1614 } 1615 1616 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, 1617 struct sk_buff *skb) 1618 { 1619 struct hci_cp_le_set_ext_adv_enable *cp; 1620 struct hci_cp_ext_adv_set *set; 1621 struct adv_info *adv = NULL, *n; 1622 struct hci_ev_status *rp = data; 1623 1624 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1625 1626 if (rp->status) 1627 return rp->status; 1628 1629 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); 1630 if (!cp) 1631 return rp->status; 1632 1633 set = (void *)cp->data; 1634 1635 hci_dev_lock(hdev); 1636 1637 if (cp->num_of_sets) 1638 adv = hci_find_adv_instance(hdev, set->handle); 1639 1640 if (cp->enable) { 1641 struct hci_conn *conn; 1642 1643 hci_dev_set_flag(hdev, HCI_LE_ADV); 1644 1645 if (adv && !adv->periodic) 1646 adv->enabled = true; 1647 1648 conn = hci_lookup_le_connect(hdev); 1649 if (conn) 1650 queue_delayed_work(hdev->workqueue, 1651 &conn->le_conn_timeout, 1652 conn->conn_timeout); 1653 } else { 1654 if (cp->num_of_sets) { 1655 if (adv) 1656 adv->enabled = false; 1657 1658 /* If just one instance was disabled check if there are 1659 * any other instance enabled before clearing HCI_LE_ADV 1660 */ 1661 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1662 list) { 1663 if (adv->enabled) 1664 goto unlock; 1665 } 1666 } else { 1667 /* All instances shall be considered disabled */ 1668 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1669 list) 1670 adv->enabled = false; 1671 } 1672 1673 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1674 } 1675 1676 unlock: 1677 hci_dev_unlock(hdev); 1678 return rp->status; 1679 } 1680 1681 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, 1682 struct sk_buff *skb) 1683 { 1684 struct hci_cp_le_set_scan_param *cp; 1685 struct hci_ev_status *rp = data; 1686 1687 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1688 1689 if (rp->status) 1690 return rp->status; 1691 1692 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); 1693 if (!cp) 1694 return rp->status; 1695 1696 hci_dev_lock(hdev); 1697 1698 hdev->le_scan_type = cp->type; 1699 1700 hci_dev_unlock(hdev); 1701 1702 return rp->status; 1703 } 1704 1705 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, 1706 struct sk_buff *skb) 1707 { 1708 struct hci_cp_le_set_ext_scan_params *cp; 1709 struct hci_ev_status *rp = data; 1710 struct hci_cp_le_scan_phy_params *phy_param; 1711 1712 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1713 1714 if (rp->status) 1715 return rp->status; 1716 1717 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); 1718 if (!cp) 1719 return rp->status; 1720 1721 phy_param = (void *)cp->data; 1722 1723 hci_dev_lock(hdev); 1724 1725 hdev->le_scan_type = phy_param->type; 1726 1727 hci_dev_unlock(hdev); 1728 1729 return rp->status; 1730 } 1731 1732 static bool has_pending_adv_report(struct hci_dev *hdev) 1733 { 1734 struct discovery_state *d = &hdev->discovery; 1735 1736 return bacmp(&d->last_adv_addr, BDADDR_ANY); 1737 } 1738 1739 static void clear_pending_adv_report(struct hci_dev *hdev) 1740 { 1741 struct discovery_state *d = &hdev->discovery; 1742 1743 bacpy(&d->last_adv_addr, BDADDR_ANY); 1744 d->last_adv_data_len = 0; 1745 } 1746 1747 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, 1748 u8 bdaddr_type, s8 rssi, u32 flags, 1749 u8 *data, u8 len) 1750 { 1751 struct discovery_state *d = &hdev->discovery; 1752 1753 if (len > max_adv_len(hdev)) 1754 return; 1755 1756 bacpy(&d->last_adv_addr, bdaddr); 1757 d->last_adv_addr_type = bdaddr_type; 1758 d->last_adv_rssi = rssi; 1759 d->last_adv_flags = flags; 1760 memcpy(d->last_adv_data, data, len); 1761 d->last_adv_data_len = len; 1762 } 1763 1764 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) 1765 { 1766 hci_dev_lock(hdev); 1767 1768 switch (enable) { 1769 case LE_SCAN_ENABLE: 1770 hci_dev_set_flag(hdev, HCI_LE_SCAN); 1771 if (hdev->le_scan_type == LE_SCAN_ACTIVE) 1772 clear_pending_adv_report(hdev); 1773 if (hci_dev_test_flag(hdev, HCI_MESH)) 1774 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 1775 break; 1776 1777 case LE_SCAN_DISABLE: 1778 /* We do this here instead of when setting DISCOVERY_STOPPED 1779 * since the latter would potentially require waiting for 1780 * inquiry to stop too. 1781 */ 1782 if (has_pending_adv_report(hdev)) { 1783 struct discovery_state *d = &hdev->discovery; 1784 1785 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 1786 d->last_adv_addr_type, NULL, 1787 d->last_adv_rssi, d->last_adv_flags, 1788 d->last_adv_data, 1789 d->last_adv_data_len, NULL, 0, 0); 1790 } 1791 1792 /* Cancel this timer so that we don't try to disable scanning 1793 * when it's already disabled. 1794 */ 1795 cancel_delayed_work(&hdev->le_scan_disable); 1796 1797 hci_dev_clear_flag(hdev, HCI_LE_SCAN); 1798 1799 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we 1800 * interrupted scanning due to a connect request. Mark 1801 * therefore discovery as stopped. 1802 */ 1803 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) 1804 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 1805 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && 1806 hdev->discovery.state == DISCOVERY_FINDING) 1807 queue_work(hdev->workqueue, &hdev->reenable_adv_work); 1808 1809 break; 1810 1811 default: 1812 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", 1813 enable); 1814 break; 1815 } 1816 1817 hci_dev_unlock(hdev); 1818 } 1819 1820 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, 1821 struct sk_buff *skb) 1822 { 1823 struct hci_cp_le_set_scan_enable *cp; 1824 struct hci_ev_status *rp = data; 1825 1826 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1827 1828 if (rp->status) 1829 return rp->status; 1830 1831 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); 1832 if (!cp) 1833 return rp->status; 1834 1835 le_set_scan_enable_complete(hdev, cp->enable); 1836 1837 return rp->status; 1838 } 1839 1840 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, 1841 struct sk_buff *skb) 1842 { 1843 struct hci_cp_le_set_ext_scan_enable *cp; 1844 struct hci_ev_status *rp = data; 1845 1846 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1847 1848 if (rp->status) 1849 return rp->status; 1850 1851 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); 1852 if (!cp) 1853 return rp->status; 1854 1855 le_set_scan_enable_complete(hdev, cp->enable); 1856 1857 return rp->status; 1858 } 1859 1860 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, 1861 struct sk_buff *skb) 1862 { 1863 struct hci_rp_le_read_num_supported_adv_sets *rp = data; 1864 1865 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, 1866 rp->num_of_sets); 1867 1868 if (rp->status) 1869 return rp->status; 1870 1871 hdev->le_num_of_adv_sets = rp->num_of_sets; 1872 1873 return rp->status; 1874 } 1875 1876 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, 1877 struct sk_buff *skb) 1878 { 1879 struct hci_rp_le_read_accept_list_size *rp = data; 1880 1881 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 1882 1883 if (rp->status) 1884 return rp->status; 1885 1886 hdev->le_accept_list_size = rp->size; 1887 1888 return rp->status; 1889 } 1890 1891 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, 1892 struct sk_buff *skb) 1893 { 1894 struct hci_ev_status *rp = data; 1895 1896 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1897 1898 if (rp->status) 1899 return rp->status; 1900 1901 hci_dev_lock(hdev); 1902 hci_bdaddr_list_clear(&hdev->le_accept_list); 1903 hci_dev_unlock(hdev); 1904 1905 return rp->status; 1906 } 1907 1908 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, 1909 struct sk_buff *skb) 1910 { 1911 struct hci_cp_le_add_to_accept_list *sent; 1912 struct hci_ev_status *rp = data; 1913 1914 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1915 1916 if (rp->status) 1917 return rp->status; 1918 1919 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); 1920 if (!sent) 1921 return rp->status; 1922 1923 hci_dev_lock(hdev); 1924 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, 1925 sent->bdaddr_type); 1926 hci_dev_unlock(hdev); 1927 1928 return rp->status; 1929 } 1930 1931 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, 1932 struct sk_buff *skb) 1933 { 1934 struct hci_cp_le_del_from_accept_list *sent; 1935 struct hci_ev_status *rp = data; 1936 1937 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1938 1939 if (rp->status) 1940 return rp->status; 1941 1942 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); 1943 if (!sent) 1944 return rp->status; 1945 1946 hci_dev_lock(hdev); 1947 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, 1948 sent->bdaddr_type); 1949 hci_dev_unlock(hdev); 1950 1951 return rp->status; 1952 } 1953 1954 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, 1955 struct sk_buff *skb) 1956 { 1957 struct hci_rp_le_read_supported_states *rp = data; 1958 1959 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1960 1961 if (rp->status) 1962 return rp->status; 1963 1964 memcpy(hdev->le_states, rp->le_states, 8); 1965 1966 return rp->status; 1967 } 1968 1969 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, 1970 struct sk_buff *skb) 1971 { 1972 struct hci_rp_le_read_def_data_len *rp = data; 1973 1974 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1975 1976 if (rp->status) 1977 return rp->status; 1978 1979 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); 1980 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); 1981 1982 return rp->status; 1983 } 1984 1985 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, 1986 struct sk_buff *skb) 1987 { 1988 struct hci_cp_le_write_def_data_len *sent; 1989 struct hci_ev_status *rp = data; 1990 1991 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1992 1993 if (rp->status) 1994 return rp->status; 1995 1996 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); 1997 if (!sent) 1998 return rp->status; 1999 2000 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); 2001 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); 2002 2003 return rp->status; 2004 } 2005 2006 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, 2007 struct sk_buff *skb) 2008 { 2009 struct hci_cp_le_add_to_resolv_list *sent; 2010 struct hci_ev_status *rp = data; 2011 2012 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2013 2014 if (rp->status) 2015 return rp->status; 2016 2017 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); 2018 if (!sent) 2019 return rp->status; 2020 2021 hci_dev_lock(hdev); 2022 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2023 sent->bdaddr_type, sent->peer_irk, 2024 sent->local_irk); 2025 hci_dev_unlock(hdev); 2026 2027 return rp->status; 2028 } 2029 2030 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, 2031 struct sk_buff *skb) 2032 { 2033 struct hci_cp_le_del_from_resolv_list *sent; 2034 struct hci_ev_status *rp = data; 2035 2036 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2037 2038 if (rp->status) 2039 return rp->status; 2040 2041 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); 2042 if (!sent) 2043 return rp->status; 2044 2045 hci_dev_lock(hdev); 2046 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2047 sent->bdaddr_type); 2048 hci_dev_unlock(hdev); 2049 2050 return rp->status; 2051 } 2052 2053 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, 2054 struct sk_buff *skb) 2055 { 2056 struct hci_ev_status *rp = data; 2057 2058 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2059 2060 if (rp->status) 2061 return rp->status; 2062 2063 hci_dev_lock(hdev); 2064 hci_bdaddr_list_clear(&hdev->le_resolv_list); 2065 hci_dev_unlock(hdev); 2066 2067 return rp->status; 2068 } 2069 2070 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, 2071 struct sk_buff *skb) 2072 { 2073 struct hci_rp_le_read_resolv_list_size *rp = data; 2074 2075 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 2076 2077 if (rp->status) 2078 return rp->status; 2079 2080 hdev->le_resolv_list_size = rp->size; 2081 2082 return rp->status; 2083 } 2084 2085 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, 2086 struct sk_buff *skb) 2087 { 2088 struct hci_ev_status *rp = data; 2089 __u8 *sent; 2090 2091 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2092 2093 if (rp->status) 2094 return rp->status; 2095 2096 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); 2097 if (!sent) 2098 return rp->status; 2099 2100 hci_dev_lock(hdev); 2101 2102 if (*sent) 2103 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); 2104 else 2105 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); 2106 2107 hci_dev_unlock(hdev); 2108 2109 return rp->status; 2110 } 2111 2112 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, 2113 struct sk_buff *skb) 2114 { 2115 struct hci_rp_le_read_max_data_len *rp = data; 2116 2117 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2118 2119 if (rp->status) 2120 return rp->status; 2121 2122 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); 2123 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); 2124 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); 2125 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); 2126 2127 return rp->status; 2128 } 2129 2130 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, 2131 struct sk_buff *skb) 2132 { 2133 struct hci_cp_write_le_host_supported *sent; 2134 struct hci_ev_status *rp = data; 2135 2136 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2137 2138 if (rp->status) 2139 return rp->status; 2140 2141 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); 2142 if (!sent) 2143 return rp->status; 2144 2145 hci_dev_lock(hdev); 2146 2147 if (sent->le) { 2148 hdev->features[1][0] |= LMP_HOST_LE; 2149 hci_dev_set_flag(hdev, HCI_LE_ENABLED); 2150 } else { 2151 hdev->features[1][0] &= ~LMP_HOST_LE; 2152 hci_dev_clear_flag(hdev, HCI_LE_ENABLED); 2153 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 2154 } 2155 2156 if (sent->simul) 2157 hdev->features[1][0] |= LMP_HOST_LE_BREDR; 2158 else 2159 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; 2160 2161 hci_dev_unlock(hdev); 2162 2163 return rp->status; 2164 } 2165 2166 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, 2167 struct sk_buff *skb) 2168 { 2169 struct hci_cp_le_set_adv_param *cp; 2170 struct hci_ev_status *rp = data; 2171 2172 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2173 2174 if (rp->status) 2175 return rp->status; 2176 2177 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); 2178 if (!cp) 2179 return rp->status; 2180 2181 hci_dev_lock(hdev); 2182 hdev->adv_addr_type = cp->own_address_type; 2183 hci_dev_unlock(hdev); 2184 2185 return rp->status; 2186 } 2187 2188 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data, 2189 struct sk_buff *skb) 2190 { 2191 struct hci_rp_le_set_ext_adv_params *rp = data; 2192 struct hci_cp_le_set_ext_adv_params *cp; 2193 struct adv_info *adv_instance; 2194 2195 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2196 2197 if (rp->status) 2198 return rp->status; 2199 2200 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); 2201 if (!cp) 2202 return rp->status; 2203 2204 hci_dev_lock(hdev); 2205 hdev->adv_addr_type = cp->own_addr_type; 2206 if (!cp->handle) { 2207 /* Store in hdev for instance 0 */ 2208 hdev->adv_tx_power = rp->tx_power; 2209 } else { 2210 adv_instance = hci_find_adv_instance(hdev, cp->handle); 2211 if (adv_instance) 2212 adv_instance->tx_power = rp->tx_power; 2213 } 2214 /* Update adv data as tx power is known now */ 2215 hci_update_adv_data(hdev, cp->handle); 2216 2217 hci_dev_unlock(hdev); 2218 2219 return rp->status; 2220 } 2221 2222 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, 2223 struct sk_buff *skb) 2224 { 2225 struct hci_rp_read_rssi *rp = data; 2226 struct hci_conn *conn; 2227 2228 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2229 2230 if (rp->status) 2231 return rp->status; 2232 2233 hci_dev_lock(hdev); 2234 2235 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2236 if (conn) 2237 conn->rssi = rp->rssi; 2238 2239 hci_dev_unlock(hdev); 2240 2241 return rp->status; 2242 } 2243 2244 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, 2245 struct sk_buff *skb) 2246 { 2247 struct hci_cp_read_tx_power *sent; 2248 struct hci_rp_read_tx_power *rp = data; 2249 struct hci_conn *conn; 2250 2251 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2252 2253 if (rp->status) 2254 return rp->status; 2255 2256 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 2257 if (!sent) 2258 return rp->status; 2259 2260 hci_dev_lock(hdev); 2261 2262 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2263 if (!conn) 2264 goto unlock; 2265 2266 switch (sent->type) { 2267 case 0x00: 2268 conn->tx_power = rp->tx_power; 2269 break; 2270 case 0x01: 2271 conn->max_tx_power = rp->tx_power; 2272 break; 2273 } 2274 2275 unlock: 2276 hci_dev_unlock(hdev); 2277 return rp->status; 2278 } 2279 2280 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, 2281 struct sk_buff *skb) 2282 { 2283 struct hci_ev_status *rp = data; 2284 u8 *mode; 2285 2286 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2287 2288 if (rp->status) 2289 return rp->status; 2290 2291 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 2292 if (mode) 2293 hdev->ssp_debug_mode = *mode; 2294 2295 return rp->status; 2296 } 2297 2298 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 2299 { 2300 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2301 2302 if (status) { 2303 hci_conn_check_pending(hdev); 2304 return; 2305 } 2306 2307 set_bit(HCI_INQUIRY, &hdev->flags); 2308 } 2309 2310 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 2311 { 2312 struct hci_cp_create_conn *cp; 2313 struct hci_conn *conn; 2314 2315 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2316 2317 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 2318 if (!cp) 2319 return; 2320 2321 hci_dev_lock(hdev); 2322 2323 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2324 2325 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); 2326 2327 if (status) { 2328 if (conn && conn->state == BT_CONNECT) { 2329 if (status != 0x0c || conn->attempt > 2) { 2330 conn->state = BT_CLOSED; 2331 hci_connect_cfm(conn, status); 2332 hci_conn_del(conn); 2333 } else 2334 conn->state = BT_CONNECT2; 2335 } 2336 } else { 2337 if (!conn) { 2338 conn = hci_conn_add_unset(hdev, ACL_LINK, &cp->bdaddr, 2339 HCI_ROLE_MASTER); 2340 if (!conn) 2341 bt_dev_err(hdev, "no memory for new connection"); 2342 } 2343 } 2344 2345 hci_dev_unlock(hdev); 2346 } 2347 2348 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 2349 { 2350 struct hci_cp_add_sco *cp; 2351 struct hci_conn *acl; 2352 struct hci_link *link; 2353 __u16 handle; 2354 2355 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2356 2357 if (!status) 2358 return; 2359 2360 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 2361 if (!cp) 2362 return; 2363 2364 handle = __le16_to_cpu(cp->handle); 2365 2366 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2367 2368 hci_dev_lock(hdev); 2369 2370 acl = hci_conn_hash_lookup_handle(hdev, handle); 2371 if (acl) { 2372 link = list_first_entry_or_null(&acl->link_list, 2373 struct hci_link, list); 2374 if (link && link->conn) { 2375 link->conn->state = BT_CLOSED; 2376 2377 hci_connect_cfm(link->conn, status); 2378 hci_conn_del(link->conn); 2379 } 2380 } 2381 2382 hci_dev_unlock(hdev); 2383 } 2384 2385 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 2386 { 2387 struct hci_cp_auth_requested *cp; 2388 struct hci_conn *conn; 2389 2390 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2391 2392 if (!status) 2393 return; 2394 2395 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 2396 if (!cp) 2397 return; 2398 2399 hci_dev_lock(hdev); 2400 2401 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2402 if (conn) { 2403 if (conn->state == BT_CONFIG) { 2404 hci_connect_cfm(conn, status); 2405 hci_conn_drop(conn); 2406 } 2407 } 2408 2409 hci_dev_unlock(hdev); 2410 } 2411 2412 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 2413 { 2414 struct hci_cp_set_conn_encrypt *cp; 2415 struct hci_conn *conn; 2416 2417 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2418 2419 if (!status) 2420 return; 2421 2422 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 2423 if (!cp) 2424 return; 2425 2426 hci_dev_lock(hdev); 2427 2428 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2429 if (conn) { 2430 if (conn->state == BT_CONFIG) { 2431 hci_connect_cfm(conn, status); 2432 hci_conn_drop(conn); 2433 } 2434 } 2435 2436 hci_dev_unlock(hdev); 2437 } 2438 2439 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 2440 struct hci_conn *conn) 2441 { 2442 if (conn->state != BT_CONFIG || !conn->out) 2443 return 0; 2444 2445 if (conn->pending_sec_level == BT_SECURITY_SDP) 2446 return 0; 2447 2448 /* Only request authentication for SSP connections or non-SSP 2449 * devices with sec_level MEDIUM or HIGH or if MITM protection 2450 * is requested. 2451 */ 2452 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 2453 conn->pending_sec_level != BT_SECURITY_FIPS && 2454 conn->pending_sec_level != BT_SECURITY_HIGH && 2455 conn->pending_sec_level != BT_SECURITY_MEDIUM) 2456 return 0; 2457 2458 return 1; 2459 } 2460 2461 static int hci_resolve_name(struct hci_dev *hdev, 2462 struct inquiry_entry *e) 2463 { 2464 struct hci_cp_remote_name_req cp; 2465 2466 memset(&cp, 0, sizeof(cp)); 2467 2468 bacpy(&cp.bdaddr, &e->data.bdaddr); 2469 cp.pscan_rep_mode = e->data.pscan_rep_mode; 2470 cp.pscan_mode = e->data.pscan_mode; 2471 cp.clock_offset = e->data.clock_offset; 2472 2473 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 2474 } 2475 2476 static bool hci_resolve_next_name(struct hci_dev *hdev) 2477 { 2478 struct discovery_state *discov = &hdev->discovery; 2479 struct inquiry_entry *e; 2480 2481 if (list_empty(&discov->resolve)) 2482 return false; 2483 2484 /* We should stop if we already spent too much time resolving names. */ 2485 if (time_after(jiffies, discov->name_resolve_timeout)) { 2486 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); 2487 return false; 2488 } 2489 2490 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2491 if (!e) 2492 return false; 2493 2494 if (hci_resolve_name(hdev, e) == 0) { 2495 e->name_state = NAME_PENDING; 2496 return true; 2497 } 2498 2499 return false; 2500 } 2501 2502 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2503 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2504 { 2505 struct discovery_state *discov = &hdev->discovery; 2506 struct inquiry_entry *e; 2507 2508 /* Update the mgmt connected state if necessary. Be careful with 2509 * conn objects that exist but are not (yet) connected however. 2510 * Only those in BT_CONFIG or BT_CONNECTED states can be 2511 * considered connected. 2512 */ 2513 if (conn && 2514 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) && 2515 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 2516 mgmt_device_connected(hdev, conn, name, name_len); 2517 2518 if (discov->state == DISCOVERY_STOPPED) 2519 return; 2520 2521 if (discov->state == DISCOVERY_STOPPING) 2522 goto discov_complete; 2523 2524 if (discov->state != DISCOVERY_RESOLVING) 2525 return; 2526 2527 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2528 /* If the device was not found in a list of found devices names of which 2529 * are pending. there is no need to continue resolving a next name as it 2530 * will be done upon receiving another Remote Name Request Complete 2531 * Event */ 2532 if (!e) 2533 return; 2534 2535 list_del(&e->list); 2536 2537 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; 2538 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, 2539 name, name_len); 2540 2541 if (hci_resolve_next_name(hdev)) 2542 return; 2543 2544 discov_complete: 2545 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2546 } 2547 2548 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2549 { 2550 struct hci_cp_remote_name_req *cp; 2551 struct hci_conn *conn; 2552 2553 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2554 2555 /* If successful wait for the name req complete event before 2556 * checking for the need to do authentication */ 2557 if (!status) 2558 return; 2559 2560 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2561 if (!cp) 2562 return; 2563 2564 hci_dev_lock(hdev); 2565 2566 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2567 2568 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2569 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2570 2571 if (!conn) 2572 goto unlock; 2573 2574 if (!hci_outgoing_auth_needed(hdev, conn)) 2575 goto unlock; 2576 2577 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2578 struct hci_cp_auth_requested auth_cp; 2579 2580 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2581 2582 auth_cp.handle = __cpu_to_le16(conn->handle); 2583 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2584 sizeof(auth_cp), &auth_cp); 2585 } 2586 2587 unlock: 2588 hci_dev_unlock(hdev); 2589 } 2590 2591 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2592 { 2593 struct hci_cp_read_remote_features *cp; 2594 struct hci_conn *conn; 2595 2596 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2597 2598 if (!status) 2599 return; 2600 2601 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2602 if (!cp) 2603 return; 2604 2605 hci_dev_lock(hdev); 2606 2607 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2608 if (conn) { 2609 if (conn->state == BT_CONFIG) { 2610 hci_connect_cfm(conn, status); 2611 hci_conn_drop(conn); 2612 } 2613 } 2614 2615 hci_dev_unlock(hdev); 2616 } 2617 2618 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2619 { 2620 struct hci_cp_read_remote_ext_features *cp; 2621 struct hci_conn *conn; 2622 2623 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2624 2625 if (!status) 2626 return; 2627 2628 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2629 if (!cp) 2630 return; 2631 2632 hci_dev_lock(hdev); 2633 2634 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2635 if (conn) { 2636 if (conn->state == BT_CONFIG) { 2637 hci_connect_cfm(conn, status); 2638 hci_conn_drop(conn); 2639 } 2640 } 2641 2642 hci_dev_unlock(hdev); 2643 } 2644 2645 static void hci_setup_sync_conn_status(struct hci_dev *hdev, __u16 handle, 2646 __u8 status) 2647 { 2648 struct hci_conn *acl; 2649 struct hci_link *link; 2650 2651 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", handle, status); 2652 2653 hci_dev_lock(hdev); 2654 2655 acl = hci_conn_hash_lookup_handle(hdev, handle); 2656 if (acl) { 2657 link = list_first_entry_or_null(&acl->link_list, 2658 struct hci_link, list); 2659 if (link && link->conn) { 2660 link->conn->state = BT_CLOSED; 2661 2662 hci_connect_cfm(link->conn, status); 2663 hci_conn_del(link->conn); 2664 } 2665 } 2666 2667 hci_dev_unlock(hdev); 2668 } 2669 2670 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2671 { 2672 struct hci_cp_setup_sync_conn *cp; 2673 2674 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2675 2676 if (!status) 2677 return; 2678 2679 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2680 if (!cp) 2681 return; 2682 2683 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2684 } 2685 2686 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2687 { 2688 struct hci_cp_enhanced_setup_sync_conn *cp; 2689 2690 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2691 2692 if (!status) 2693 return; 2694 2695 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); 2696 if (!cp) 2697 return; 2698 2699 hci_setup_sync_conn_status(hdev, __le16_to_cpu(cp->handle), status); 2700 } 2701 2702 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2703 { 2704 struct hci_cp_sniff_mode *cp; 2705 struct hci_conn *conn; 2706 2707 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2708 2709 if (!status) 2710 return; 2711 2712 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2713 if (!cp) 2714 return; 2715 2716 hci_dev_lock(hdev); 2717 2718 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2719 if (conn) { 2720 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2721 2722 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2723 hci_sco_setup(conn, status); 2724 } 2725 2726 hci_dev_unlock(hdev); 2727 } 2728 2729 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2730 { 2731 struct hci_cp_exit_sniff_mode *cp; 2732 struct hci_conn *conn; 2733 2734 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2735 2736 if (!status) 2737 return; 2738 2739 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2740 if (!cp) 2741 return; 2742 2743 hci_dev_lock(hdev); 2744 2745 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2746 if (conn) { 2747 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2748 2749 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2750 hci_sco_setup(conn, status); 2751 } 2752 2753 hci_dev_unlock(hdev); 2754 } 2755 2756 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2757 { 2758 struct hci_cp_disconnect *cp; 2759 struct hci_conn_params *params; 2760 struct hci_conn *conn; 2761 bool mgmt_conn; 2762 2763 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2764 2765 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended 2766 * otherwise cleanup the connection immediately. 2767 */ 2768 if (!status && !hdev->suspended) 2769 return; 2770 2771 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2772 if (!cp) 2773 return; 2774 2775 hci_dev_lock(hdev); 2776 2777 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2778 if (!conn) 2779 goto unlock; 2780 2781 if (status) { 2782 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2783 conn->dst_type, status); 2784 2785 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 2786 hdev->cur_adv_instance = conn->adv_instance; 2787 hci_enable_advertising(hdev); 2788 } 2789 2790 /* Inform sockets conn is gone before we delete it */ 2791 hci_disconn_cfm(conn, HCI_ERROR_UNSPECIFIED); 2792 2793 goto done; 2794 } 2795 2796 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2797 2798 if (conn->type == ACL_LINK) { 2799 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2800 hci_remove_link_key(hdev, &conn->dst); 2801 } 2802 2803 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2804 if (params) { 2805 switch (params->auto_connect) { 2806 case HCI_AUTO_CONN_LINK_LOSS: 2807 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2808 break; 2809 fallthrough; 2810 2811 case HCI_AUTO_CONN_DIRECT: 2812 case HCI_AUTO_CONN_ALWAYS: 2813 hci_pend_le_list_del_init(params); 2814 hci_pend_le_list_add(params, &hdev->pend_le_conns); 2815 break; 2816 2817 default: 2818 break; 2819 } 2820 } 2821 2822 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2823 cp->reason, mgmt_conn); 2824 2825 hci_disconn_cfm(conn, cp->reason); 2826 2827 done: 2828 /* If the disconnection failed for any reason, the upper layer 2829 * does not retry to disconnect in current implementation. 2830 * Hence, we need to do some basic cleanup here and re-enable 2831 * advertising if necessary. 2832 */ 2833 hci_conn_del(conn); 2834 unlock: 2835 hci_dev_unlock(hdev); 2836 } 2837 2838 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2839 { 2840 /* When using controller based address resolution, then the new 2841 * address types 0x02 and 0x03 are used. These types need to be 2842 * converted back into either public address or random address type 2843 */ 2844 switch (type) { 2845 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2846 if (resolved) 2847 *resolved = true; 2848 return ADDR_LE_DEV_PUBLIC; 2849 case ADDR_LE_DEV_RANDOM_RESOLVED: 2850 if (resolved) 2851 *resolved = true; 2852 return ADDR_LE_DEV_RANDOM; 2853 } 2854 2855 if (resolved) 2856 *resolved = false; 2857 return type; 2858 } 2859 2860 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2861 u8 peer_addr_type, u8 own_address_type, 2862 u8 filter_policy) 2863 { 2864 struct hci_conn *conn; 2865 2866 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2867 peer_addr_type); 2868 if (!conn) 2869 return; 2870 2871 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2872 2873 /* Store the initiator and responder address information which 2874 * is needed for SMP. These values will not change during the 2875 * lifetime of the connection. 2876 */ 2877 conn->init_addr_type = own_address_type; 2878 if (own_address_type == ADDR_LE_DEV_RANDOM) 2879 bacpy(&conn->init_addr, &hdev->random_addr); 2880 else 2881 bacpy(&conn->init_addr, &hdev->bdaddr); 2882 2883 conn->resp_addr_type = peer_addr_type; 2884 bacpy(&conn->resp_addr, peer_addr); 2885 } 2886 2887 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2888 { 2889 struct hci_cp_le_create_conn *cp; 2890 2891 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2892 2893 /* All connection failure handling is taken care of by the 2894 * hci_conn_failed function which is triggered by the HCI 2895 * request completion callbacks used for connecting. 2896 */ 2897 if (status) 2898 return; 2899 2900 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2901 if (!cp) 2902 return; 2903 2904 hci_dev_lock(hdev); 2905 2906 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2907 cp->own_address_type, cp->filter_policy); 2908 2909 hci_dev_unlock(hdev); 2910 } 2911 2912 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2913 { 2914 struct hci_cp_le_ext_create_conn *cp; 2915 2916 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2917 2918 /* All connection failure handling is taken care of by the 2919 * hci_conn_failed function which is triggered by the HCI 2920 * request completion callbacks used for connecting. 2921 */ 2922 if (status) 2923 return; 2924 2925 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2926 if (!cp) 2927 return; 2928 2929 hci_dev_lock(hdev); 2930 2931 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2932 cp->own_addr_type, cp->filter_policy); 2933 2934 hci_dev_unlock(hdev); 2935 } 2936 2937 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2938 { 2939 struct hci_cp_le_read_remote_features *cp; 2940 struct hci_conn *conn; 2941 2942 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2943 2944 if (!status) 2945 return; 2946 2947 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2948 if (!cp) 2949 return; 2950 2951 hci_dev_lock(hdev); 2952 2953 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2954 if (conn) { 2955 if (conn->state == BT_CONFIG) { 2956 hci_connect_cfm(conn, status); 2957 hci_conn_drop(conn); 2958 } 2959 } 2960 2961 hci_dev_unlock(hdev); 2962 } 2963 2964 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2965 { 2966 struct hci_cp_le_start_enc *cp; 2967 struct hci_conn *conn; 2968 2969 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2970 2971 if (!status) 2972 return; 2973 2974 hci_dev_lock(hdev); 2975 2976 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2977 if (!cp) 2978 goto unlock; 2979 2980 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2981 if (!conn) 2982 goto unlock; 2983 2984 if (conn->state != BT_CONNECTED) 2985 goto unlock; 2986 2987 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2988 hci_conn_drop(conn); 2989 2990 unlock: 2991 hci_dev_unlock(hdev); 2992 } 2993 2994 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2995 { 2996 struct hci_cp_switch_role *cp; 2997 struct hci_conn *conn; 2998 2999 BT_DBG("%s status 0x%2.2x", hdev->name, status); 3000 3001 if (!status) 3002 return; 3003 3004 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 3005 if (!cp) 3006 return; 3007 3008 hci_dev_lock(hdev); 3009 3010 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 3011 if (conn) 3012 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 3013 3014 hci_dev_unlock(hdev); 3015 } 3016 3017 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 3018 struct sk_buff *skb) 3019 { 3020 struct hci_ev_status *ev = data; 3021 struct discovery_state *discov = &hdev->discovery; 3022 struct inquiry_entry *e; 3023 3024 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3025 3026 hci_conn_check_pending(hdev); 3027 3028 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 3029 return; 3030 3031 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 3032 wake_up_bit(&hdev->flags, HCI_INQUIRY); 3033 3034 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3035 return; 3036 3037 hci_dev_lock(hdev); 3038 3039 if (discov->state != DISCOVERY_FINDING) 3040 goto unlock; 3041 3042 if (list_empty(&discov->resolve)) { 3043 /* When BR/EDR inquiry is active and no LE scanning is in 3044 * progress, then change discovery state to indicate completion. 3045 * 3046 * When running LE scanning and BR/EDR inquiry simultaneously 3047 * and the LE scan already finished, then change the discovery 3048 * state to indicate completion. 3049 */ 3050 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3051 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3052 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3053 goto unlock; 3054 } 3055 3056 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 3057 if (e && hci_resolve_name(hdev, e) == 0) { 3058 e->name_state = NAME_PENDING; 3059 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 3060 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 3061 } else { 3062 /* When BR/EDR inquiry is active and no LE scanning is in 3063 * progress, then change discovery state to indicate completion. 3064 * 3065 * When running LE scanning and BR/EDR inquiry simultaneously 3066 * and the LE scan already finished, then change the discovery 3067 * state to indicate completion. 3068 */ 3069 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3070 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3071 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3072 } 3073 3074 unlock: 3075 hci_dev_unlock(hdev); 3076 } 3077 3078 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3079 struct sk_buff *skb) 3080 { 3081 struct hci_ev_inquiry_result *ev = edata; 3082 struct inquiry_data data; 3083 int i; 3084 3085 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3086 flex_array_size(ev, info, ev->num))) 3087 return; 3088 3089 bt_dev_dbg(hdev, "num %d", ev->num); 3090 3091 if (!ev->num) 3092 return; 3093 3094 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3095 return; 3096 3097 hci_dev_lock(hdev); 3098 3099 for (i = 0; i < ev->num; i++) { 3100 struct inquiry_info *info = &ev->info[i]; 3101 u32 flags; 3102 3103 bacpy(&data.bdaddr, &info->bdaddr); 3104 data.pscan_rep_mode = info->pscan_rep_mode; 3105 data.pscan_period_mode = info->pscan_period_mode; 3106 data.pscan_mode = info->pscan_mode; 3107 memcpy(data.dev_class, info->dev_class, 3); 3108 data.clock_offset = info->clock_offset; 3109 data.rssi = HCI_RSSI_INVALID; 3110 data.ssp_mode = 0x00; 3111 3112 flags = hci_inquiry_cache_update(hdev, &data, false); 3113 3114 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3115 info->dev_class, HCI_RSSI_INVALID, 3116 flags, NULL, 0, NULL, 0, 0); 3117 } 3118 3119 hci_dev_unlock(hdev); 3120 } 3121 3122 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3123 struct sk_buff *skb) 3124 { 3125 struct hci_ev_conn_complete *ev = data; 3126 struct hci_conn *conn; 3127 u8 status = ev->status; 3128 3129 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3130 3131 hci_dev_lock(hdev); 3132 3133 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3134 if (!conn) { 3135 /* In case of error status and there is no connection pending 3136 * just unlock as there is nothing to cleanup. 3137 */ 3138 if (ev->status) 3139 goto unlock; 3140 3141 /* Connection may not exist if auto-connected. Check the bredr 3142 * allowlist to see if this device is allowed to auto connect. 3143 * If link is an ACL type, create a connection class 3144 * automatically. 3145 * 3146 * Auto-connect will only occur if the event filter is 3147 * programmed with a given address. Right now, event filter is 3148 * only used during suspend. 3149 */ 3150 if (ev->link_type == ACL_LINK && 3151 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3152 &ev->bdaddr, 3153 BDADDR_BREDR)) { 3154 conn = hci_conn_add_unset(hdev, ev->link_type, 3155 &ev->bdaddr, HCI_ROLE_SLAVE); 3156 if (!conn) { 3157 bt_dev_err(hdev, "no memory for new conn"); 3158 goto unlock; 3159 } 3160 } else { 3161 if (ev->link_type != SCO_LINK) 3162 goto unlock; 3163 3164 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3165 &ev->bdaddr); 3166 if (!conn) 3167 goto unlock; 3168 3169 conn->type = SCO_LINK; 3170 } 3171 } 3172 3173 /* The HCI_Connection_Complete event is only sent once per connection. 3174 * Processing it more than once per connection can corrupt kernel memory. 3175 * 3176 * As the connection handle is set here for the first time, it indicates 3177 * whether the connection is already set up. 3178 */ 3179 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 3180 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3181 goto unlock; 3182 } 3183 3184 if (!status) { 3185 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 3186 if (status) 3187 goto done; 3188 3189 if (conn->type == ACL_LINK) { 3190 conn->state = BT_CONFIG; 3191 hci_conn_hold(conn); 3192 3193 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3194 !hci_find_link_key(hdev, &ev->bdaddr)) 3195 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3196 else 3197 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3198 } else 3199 conn->state = BT_CONNECTED; 3200 3201 hci_debugfs_create_conn(conn); 3202 hci_conn_add_sysfs(conn); 3203 3204 if (test_bit(HCI_AUTH, &hdev->flags)) 3205 set_bit(HCI_CONN_AUTH, &conn->flags); 3206 3207 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3208 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3209 3210 /* Get remote features */ 3211 if (conn->type == ACL_LINK) { 3212 struct hci_cp_read_remote_features cp; 3213 cp.handle = ev->handle; 3214 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3215 sizeof(cp), &cp); 3216 3217 hci_update_scan(hdev); 3218 } 3219 3220 /* Set packet type for incoming connection */ 3221 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3222 struct hci_cp_change_conn_ptype cp; 3223 cp.handle = ev->handle; 3224 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3225 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3226 &cp); 3227 } 3228 } 3229 3230 if (conn->type == ACL_LINK) 3231 hci_sco_setup(conn, ev->status); 3232 3233 done: 3234 if (status) { 3235 hci_conn_failed(conn, status); 3236 } else if (ev->link_type == SCO_LINK) { 3237 switch (conn->setting & SCO_AIRMODE_MASK) { 3238 case SCO_AIRMODE_CVSD: 3239 if (hdev->notify) 3240 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3241 break; 3242 } 3243 3244 hci_connect_cfm(conn, status); 3245 } 3246 3247 unlock: 3248 hci_dev_unlock(hdev); 3249 3250 hci_conn_check_pending(hdev); 3251 } 3252 3253 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3254 { 3255 struct hci_cp_reject_conn_req cp; 3256 3257 bacpy(&cp.bdaddr, bdaddr); 3258 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3259 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3260 } 3261 3262 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3263 struct sk_buff *skb) 3264 { 3265 struct hci_ev_conn_request *ev = data; 3266 int mask = hdev->link_mode; 3267 struct inquiry_entry *ie; 3268 struct hci_conn *conn; 3269 __u8 flags = 0; 3270 3271 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3272 3273 /* Reject incoming connection from device with same BD ADDR against 3274 * CVE-2020-26555 3275 */ 3276 if (hdev && !bacmp(&hdev->bdaddr, &ev->bdaddr)) { 3277 bt_dev_dbg(hdev, "Reject connection with same BD_ADDR %pMR\n", 3278 &ev->bdaddr); 3279 hci_reject_conn(hdev, &ev->bdaddr); 3280 return; 3281 } 3282 3283 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3284 &flags); 3285 3286 if (!(mask & HCI_LM_ACCEPT)) { 3287 hci_reject_conn(hdev, &ev->bdaddr); 3288 return; 3289 } 3290 3291 hci_dev_lock(hdev); 3292 3293 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3294 BDADDR_BREDR)) { 3295 hci_reject_conn(hdev, &ev->bdaddr); 3296 goto unlock; 3297 } 3298 3299 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3300 * connection. These features are only touched through mgmt so 3301 * only do the checks if HCI_MGMT is set. 3302 */ 3303 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3304 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3305 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3306 BDADDR_BREDR)) { 3307 hci_reject_conn(hdev, &ev->bdaddr); 3308 goto unlock; 3309 } 3310 3311 /* Connection accepted */ 3312 3313 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3314 if (ie) 3315 memcpy(ie->data.dev_class, ev->dev_class, 3); 3316 3317 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3318 &ev->bdaddr); 3319 if (!conn) { 3320 conn = hci_conn_add_unset(hdev, ev->link_type, &ev->bdaddr, 3321 HCI_ROLE_SLAVE); 3322 if (!conn) { 3323 bt_dev_err(hdev, "no memory for new connection"); 3324 goto unlock; 3325 } 3326 } 3327 3328 memcpy(conn->dev_class, ev->dev_class, 3); 3329 3330 hci_dev_unlock(hdev); 3331 3332 if (ev->link_type == ACL_LINK || 3333 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3334 struct hci_cp_accept_conn_req cp; 3335 conn->state = BT_CONNECT; 3336 3337 bacpy(&cp.bdaddr, &ev->bdaddr); 3338 3339 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3340 cp.role = 0x00; /* Become central */ 3341 else 3342 cp.role = 0x01; /* Remain peripheral */ 3343 3344 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3345 } else if (!(flags & HCI_PROTO_DEFER)) { 3346 struct hci_cp_accept_sync_conn_req cp; 3347 conn->state = BT_CONNECT; 3348 3349 bacpy(&cp.bdaddr, &ev->bdaddr); 3350 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3351 3352 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3353 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3354 cp.max_latency = cpu_to_le16(0xffff); 3355 cp.content_format = cpu_to_le16(hdev->voice_setting); 3356 cp.retrans_effort = 0xff; 3357 3358 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3359 &cp); 3360 } else { 3361 conn->state = BT_CONNECT2; 3362 hci_connect_cfm(conn, 0); 3363 } 3364 3365 return; 3366 unlock: 3367 hci_dev_unlock(hdev); 3368 } 3369 3370 static u8 hci_to_mgmt_reason(u8 err) 3371 { 3372 switch (err) { 3373 case HCI_ERROR_CONNECTION_TIMEOUT: 3374 return MGMT_DEV_DISCONN_TIMEOUT; 3375 case HCI_ERROR_REMOTE_USER_TERM: 3376 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3377 case HCI_ERROR_REMOTE_POWER_OFF: 3378 return MGMT_DEV_DISCONN_REMOTE; 3379 case HCI_ERROR_LOCAL_HOST_TERM: 3380 return MGMT_DEV_DISCONN_LOCAL_HOST; 3381 default: 3382 return MGMT_DEV_DISCONN_UNKNOWN; 3383 } 3384 } 3385 3386 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3387 struct sk_buff *skb) 3388 { 3389 struct hci_ev_disconn_complete *ev = data; 3390 u8 reason; 3391 struct hci_conn_params *params; 3392 struct hci_conn *conn; 3393 bool mgmt_connected; 3394 3395 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3396 3397 hci_dev_lock(hdev); 3398 3399 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3400 if (!conn) 3401 goto unlock; 3402 3403 if (ev->status) { 3404 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3405 conn->dst_type, ev->status); 3406 goto unlock; 3407 } 3408 3409 conn->state = BT_CLOSED; 3410 3411 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3412 3413 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3414 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3415 else 3416 reason = hci_to_mgmt_reason(ev->reason); 3417 3418 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3419 reason, mgmt_connected); 3420 3421 if (conn->type == ACL_LINK) { 3422 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3423 hci_remove_link_key(hdev, &conn->dst); 3424 3425 hci_update_scan(hdev); 3426 } 3427 3428 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 3429 if (params) { 3430 switch (params->auto_connect) { 3431 case HCI_AUTO_CONN_LINK_LOSS: 3432 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3433 break; 3434 fallthrough; 3435 3436 case HCI_AUTO_CONN_DIRECT: 3437 case HCI_AUTO_CONN_ALWAYS: 3438 hci_pend_le_list_del_init(params); 3439 hci_pend_le_list_add(params, &hdev->pend_le_conns); 3440 hci_update_passive_scan(hdev); 3441 break; 3442 3443 default: 3444 break; 3445 } 3446 } 3447 3448 hci_disconn_cfm(conn, ev->reason); 3449 3450 /* Re-enable advertising if necessary, since it might 3451 * have been disabled by the connection. From the 3452 * HCI_LE_Set_Advertise_Enable command description in 3453 * the core specification (v4.0): 3454 * "The Controller shall continue advertising until the Host 3455 * issues an LE_Set_Advertise_Enable command with 3456 * Advertising_Enable set to 0x00 (Advertising is disabled) 3457 * or until a connection is created or until the Advertising 3458 * is timed out due to Directed Advertising." 3459 */ 3460 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3461 hdev->cur_adv_instance = conn->adv_instance; 3462 hci_enable_advertising(hdev); 3463 } 3464 3465 hci_conn_del(conn); 3466 3467 unlock: 3468 hci_dev_unlock(hdev); 3469 } 3470 3471 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3472 struct sk_buff *skb) 3473 { 3474 struct hci_ev_auth_complete *ev = data; 3475 struct hci_conn *conn; 3476 3477 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3478 3479 hci_dev_lock(hdev); 3480 3481 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3482 if (!conn) 3483 goto unlock; 3484 3485 if (!ev->status) { 3486 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3487 3488 if (!hci_conn_ssp_enabled(conn) && 3489 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) { 3490 bt_dev_info(hdev, "re-auth of legacy device is not possible."); 3491 } else { 3492 set_bit(HCI_CONN_AUTH, &conn->flags); 3493 conn->sec_level = conn->pending_sec_level; 3494 } 3495 } else { 3496 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3497 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3498 3499 mgmt_auth_failed(conn, ev->status); 3500 } 3501 3502 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3503 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags); 3504 3505 if (conn->state == BT_CONFIG) { 3506 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3507 struct hci_cp_set_conn_encrypt cp; 3508 cp.handle = ev->handle; 3509 cp.encrypt = 0x01; 3510 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3511 &cp); 3512 } else { 3513 conn->state = BT_CONNECTED; 3514 hci_connect_cfm(conn, ev->status); 3515 hci_conn_drop(conn); 3516 } 3517 } else { 3518 hci_auth_cfm(conn, ev->status); 3519 3520 hci_conn_hold(conn); 3521 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3522 hci_conn_drop(conn); 3523 } 3524 3525 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3526 if (!ev->status) { 3527 struct hci_cp_set_conn_encrypt cp; 3528 cp.handle = ev->handle; 3529 cp.encrypt = 0x01; 3530 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3531 &cp); 3532 } else { 3533 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3534 hci_encrypt_cfm(conn, ev->status); 3535 } 3536 } 3537 3538 unlock: 3539 hci_dev_unlock(hdev); 3540 } 3541 3542 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3543 struct sk_buff *skb) 3544 { 3545 struct hci_ev_remote_name *ev = data; 3546 struct hci_conn *conn; 3547 3548 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3549 3550 hci_conn_check_pending(hdev); 3551 3552 hci_dev_lock(hdev); 3553 3554 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3555 3556 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3557 goto check_auth; 3558 3559 if (ev->status == 0) 3560 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3561 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3562 else 3563 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3564 3565 check_auth: 3566 if (!conn) 3567 goto unlock; 3568 3569 if (!hci_outgoing_auth_needed(hdev, conn)) 3570 goto unlock; 3571 3572 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3573 struct hci_cp_auth_requested cp; 3574 3575 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3576 3577 cp.handle = __cpu_to_le16(conn->handle); 3578 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3579 } 3580 3581 unlock: 3582 hci_dev_unlock(hdev); 3583 } 3584 3585 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3586 struct sk_buff *skb) 3587 { 3588 struct hci_ev_encrypt_change *ev = data; 3589 struct hci_conn *conn; 3590 3591 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3592 3593 hci_dev_lock(hdev); 3594 3595 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3596 if (!conn) 3597 goto unlock; 3598 3599 if (!ev->status) { 3600 if (ev->encrypt) { 3601 /* Encryption implies authentication */ 3602 set_bit(HCI_CONN_AUTH, &conn->flags); 3603 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3604 conn->sec_level = conn->pending_sec_level; 3605 3606 /* P-256 authentication key implies FIPS */ 3607 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3608 set_bit(HCI_CONN_FIPS, &conn->flags); 3609 3610 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3611 conn->type == LE_LINK) 3612 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3613 } else { 3614 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3615 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3616 } 3617 } 3618 3619 /* We should disregard the current RPA and generate a new one 3620 * whenever the encryption procedure fails. 3621 */ 3622 if (ev->status && conn->type == LE_LINK) { 3623 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3624 hci_adv_instances_set_rpa_expired(hdev, true); 3625 } 3626 3627 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3628 3629 /* Check link security requirements are met */ 3630 if (!hci_conn_check_link_mode(conn)) 3631 ev->status = HCI_ERROR_AUTH_FAILURE; 3632 3633 if (ev->status && conn->state == BT_CONNECTED) { 3634 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3635 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3636 3637 /* Notify upper layers so they can cleanup before 3638 * disconnecting. 3639 */ 3640 hci_encrypt_cfm(conn, ev->status); 3641 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3642 hci_conn_drop(conn); 3643 goto unlock; 3644 } 3645 3646 /* Try reading the encryption key size for encrypted ACL links */ 3647 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3648 struct hci_cp_read_enc_key_size cp; 3649 3650 /* Only send HCI_Read_Encryption_Key_Size if the 3651 * controller really supports it. If it doesn't, assume 3652 * the default size (16). 3653 */ 3654 if (!(hdev->commands[20] & 0x10)) { 3655 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3656 goto notify; 3657 } 3658 3659 cp.handle = cpu_to_le16(conn->handle); 3660 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3661 sizeof(cp), &cp)) { 3662 bt_dev_err(hdev, "sending read key size failed"); 3663 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3664 goto notify; 3665 } 3666 3667 goto unlock; 3668 } 3669 3670 /* Set the default Authenticated Payload Timeout after 3671 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3672 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3673 * sent when the link is active and Encryption is enabled, the conn 3674 * type can be either LE or ACL and controller must support LMP Ping. 3675 * Ensure for AES-CCM encryption as well. 3676 */ 3677 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3678 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3679 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3680 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3681 struct hci_cp_write_auth_payload_to cp; 3682 3683 cp.handle = cpu_to_le16(conn->handle); 3684 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3685 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3686 sizeof(cp), &cp)) { 3687 bt_dev_err(hdev, "write auth payload timeout failed"); 3688 goto notify; 3689 } 3690 3691 goto unlock; 3692 } 3693 3694 notify: 3695 hci_encrypt_cfm(conn, ev->status); 3696 3697 unlock: 3698 hci_dev_unlock(hdev); 3699 } 3700 3701 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3702 struct sk_buff *skb) 3703 { 3704 struct hci_ev_change_link_key_complete *ev = data; 3705 struct hci_conn *conn; 3706 3707 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3708 3709 hci_dev_lock(hdev); 3710 3711 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3712 if (conn) { 3713 if (!ev->status) 3714 set_bit(HCI_CONN_SECURE, &conn->flags); 3715 3716 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3717 3718 hci_key_change_cfm(conn, ev->status); 3719 } 3720 3721 hci_dev_unlock(hdev); 3722 } 3723 3724 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3725 struct sk_buff *skb) 3726 { 3727 struct hci_ev_remote_features *ev = data; 3728 struct hci_conn *conn; 3729 3730 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3731 3732 hci_dev_lock(hdev); 3733 3734 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3735 if (!conn) 3736 goto unlock; 3737 3738 if (!ev->status) 3739 memcpy(conn->features[0], ev->features, 8); 3740 3741 if (conn->state != BT_CONFIG) 3742 goto unlock; 3743 3744 if (!ev->status && lmp_ext_feat_capable(hdev) && 3745 lmp_ext_feat_capable(conn)) { 3746 struct hci_cp_read_remote_ext_features cp; 3747 cp.handle = ev->handle; 3748 cp.page = 0x01; 3749 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3750 sizeof(cp), &cp); 3751 goto unlock; 3752 } 3753 3754 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 3755 struct hci_cp_remote_name_req cp; 3756 memset(&cp, 0, sizeof(cp)); 3757 bacpy(&cp.bdaddr, &conn->dst); 3758 cp.pscan_rep_mode = 0x02; 3759 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3760 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 3761 mgmt_device_connected(hdev, conn, NULL, 0); 3762 3763 if (!hci_outgoing_auth_needed(hdev, conn)) { 3764 conn->state = BT_CONNECTED; 3765 hci_connect_cfm(conn, ev->status); 3766 hci_conn_drop(conn); 3767 } 3768 3769 unlock: 3770 hci_dev_unlock(hdev); 3771 } 3772 3773 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3774 { 3775 cancel_delayed_work(&hdev->cmd_timer); 3776 3777 rcu_read_lock(); 3778 if (!test_bit(HCI_RESET, &hdev->flags)) { 3779 if (ncmd) { 3780 cancel_delayed_work(&hdev->ncmd_timer); 3781 atomic_set(&hdev->cmd_cnt, 1); 3782 } else { 3783 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3784 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3785 HCI_NCMD_TIMEOUT); 3786 } 3787 } 3788 rcu_read_unlock(); 3789 } 3790 3791 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3792 struct sk_buff *skb) 3793 { 3794 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3795 3796 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3797 3798 if (rp->status) 3799 return rp->status; 3800 3801 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3802 hdev->le_pkts = rp->acl_max_pkt; 3803 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3804 hdev->iso_pkts = rp->iso_max_pkt; 3805 3806 hdev->le_cnt = hdev->le_pkts; 3807 hdev->iso_cnt = hdev->iso_pkts; 3808 3809 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3810 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3811 3812 return rp->status; 3813 } 3814 3815 static void hci_unbound_cis_failed(struct hci_dev *hdev, u8 cig, u8 status) 3816 { 3817 struct hci_conn *conn, *tmp; 3818 3819 lockdep_assert_held(&hdev->lock); 3820 3821 list_for_each_entry_safe(conn, tmp, &hdev->conn_hash.list, list) { 3822 if (conn->type != ISO_LINK || !bacmp(&conn->dst, BDADDR_ANY) || 3823 conn->state == BT_OPEN || conn->iso_qos.ucast.cig != cig) 3824 continue; 3825 3826 if (HCI_CONN_HANDLE_UNSET(conn->handle)) 3827 hci_conn_failed(conn, status); 3828 } 3829 } 3830 3831 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3832 struct sk_buff *skb) 3833 { 3834 struct hci_rp_le_set_cig_params *rp = data; 3835 struct hci_cp_le_set_cig_params *cp; 3836 struct hci_conn *conn; 3837 u8 status = rp->status; 3838 bool pending = false; 3839 int i; 3840 3841 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3842 3843 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_CIG_PARAMS); 3844 if (!rp->status && (!cp || rp->num_handles != cp->num_cis || 3845 rp->cig_id != cp->cig_id)) { 3846 bt_dev_err(hdev, "unexpected Set CIG Parameters response data"); 3847 status = HCI_ERROR_UNSPECIFIED; 3848 } 3849 3850 hci_dev_lock(hdev); 3851 3852 /* BLUETOOTH CORE SPECIFICATION Version 5.4 | Vol 4, Part E page 2554 3853 * 3854 * If the Status return parameter is non-zero, then the state of the CIG 3855 * and its CIS configurations shall not be changed by the command. If 3856 * the CIG did not already exist, it shall not be created. 3857 */ 3858 if (status) { 3859 /* Keep current configuration, fail only the unbound CIS */ 3860 hci_unbound_cis_failed(hdev, rp->cig_id, status); 3861 goto unlock; 3862 } 3863 3864 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 2553 3865 * 3866 * If the Status return parameter is zero, then the Controller shall 3867 * set the Connection_Handle arrayed return parameter to the connection 3868 * handle(s) corresponding to the CIS configurations specified in 3869 * the CIS_IDs command parameter, in the same order. 3870 */ 3871 for (i = 0; i < rp->num_handles; ++i) { 3872 conn = hci_conn_hash_lookup_cis(hdev, NULL, 0, rp->cig_id, 3873 cp->cis[i].cis_id); 3874 if (!conn || !bacmp(&conn->dst, BDADDR_ANY)) 3875 continue; 3876 3877 if (conn->state != BT_BOUND && conn->state != BT_CONNECT) 3878 continue; 3879 3880 if (hci_conn_set_handle(conn, __le16_to_cpu(rp->handle[i]))) 3881 continue; 3882 3883 if (conn->state == BT_CONNECT) 3884 pending = true; 3885 } 3886 3887 unlock: 3888 if (pending) 3889 hci_le_create_cis_pending(hdev); 3890 3891 hci_dev_unlock(hdev); 3892 3893 return rp->status; 3894 } 3895 3896 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3897 struct sk_buff *skb) 3898 { 3899 struct hci_rp_le_setup_iso_path *rp = data; 3900 struct hci_cp_le_setup_iso_path *cp; 3901 struct hci_conn *conn; 3902 3903 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3904 3905 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3906 if (!cp) 3907 return rp->status; 3908 3909 hci_dev_lock(hdev); 3910 3911 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3912 if (!conn) 3913 goto unlock; 3914 3915 if (rp->status) { 3916 hci_connect_cfm(conn, rp->status); 3917 hci_conn_del(conn); 3918 goto unlock; 3919 } 3920 3921 switch (cp->direction) { 3922 /* Input (Host to Controller) */ 3923 case 0x00: 3924 /* Only confirm connection if output only */ 3925 if (conn->iso_qos.ucast.out.sdu && !conn->iso_qos.ucast.in.sdu) 3926 hci_connect_cfm(conn, rp->status); 3927 break; 3928 /* Output (Controller to Host) */ 3929 case 0x01: 3930 /* Confirm connection since conn->iso_qos is always configured 3931 * last. 3932 */ 3933 hci_connect_cfm(conn, rp->status); 3934 break; 3935 } 3936 3937 unlock: 3938 hci_dev_unlock(hdev); 3939 return rp->status; 3940 } 3941 3942 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3943 { 3944 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3945 } 3946 3947 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3948 struct sk_buff *skb) 3949 { 3950 struct hci_ev_status *rp = data; 3951 struct hci_cp_le_set_per_adv_params *cp; 3952 3953 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3954 3955 if (rp->status) 3956 return rp->status; 3957 3958 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3959 if (!cp) 3960 return rp->status; 3961 3962 /* TODO: set the conn state */ 3963 return rp->status; 3964 } 3965 3966 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3967 struct sk_buff *skb) 3968 { 3969 struct hci_ev_status *rp = data; 3970 struct hci_cp_le_set_per_adv_enable *cp; 3971 struct adv_info *adv = NULL, *n; 3972 u8 per_adv_cnt = 0; 3973 3974 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3975 3976 if (rp->status) 3977 return rp->status; 3978 3979 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3980 if (!cp) 3981 return rp->status; 3982 3983 hci_dev_lock(hdev); 3984 3985 adv = hci_find_adv_instance(hdev, cp->handle); 3986 3987 if (cp->enable) { 3988 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3989 3990 if (adv) 3991 adv->enabled = true; 3992 } else { 3993 /* If just one instance was disabled check if there are 3994 * any other instance enabled before clearing HCI_LE_PER_ADV. 3995 * The current periodic adv instance will be marked as 3996 * disabled once extended advertising is also disabled. 3997 */ 3998 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 3999 list) { 4000 if (adv->periodic && adv->enabled) 4001 per_adv_cnt++; 4002 } 4003 4004 if (per_adv_cnt > 1) 4005 goto unlock; 4006 4007 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 4008 } 4009 4010 unlock: 4011 hci_dev_unlock(hdev); 4012 4013 return rp->status; 4014 } 4015 4016 #define HCI_CC_VL(_op, _func, _min, _max) \ 4017 { \ 4018 .op = _op, \ 4019 .func = _func, \ 4020 .min_len = _min, \ 4021 .max_len = _max, \ 4022 } 4023 4024 #define HCI_CC(_op, _func, _len) \ 4025 HCI_CC_VL(_op, _func, _len, _len) 4026 4027 #define HCI_CC_STATUS(_op, _func) \ 4028 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 4029 4030 static const struct hci_cc { 4031 u16 op; 4032 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 4033 u16 min_len; 4034 u16 max_len; 4035 } hci_cc_table[] = { 4036 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 4037 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 4038 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 4039 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 4040 hci_cc_remote_name_req_cancel), 4041 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 4042 sizeof(struct hci_rp_role_discovery)), 4043 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 4044 sizeof(struct hci_rp_read_link_policy)), 4045 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 4046 sizeof(struct hci_rp_write_link_policy)), 4047 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 4048 sizeof(struct hci_rp_read_def_link_policy)), 4049 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4050 hci_cc_write_def_link_policy), 4051 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4052 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4053 sizeof(struct hci_rp_read_stored_link_key)), 4054 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4055 sizeof(struct hci_rp_delete_stored_link_key)), 4056 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4057 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4058 sizeof(struct hci_rp_read_local_name)), 4059 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4060 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4061 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4062 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4063 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4064 sizeof(struct hci_rp_read_class_of_dev)), 4065 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4066 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4067 sizeof(struct hci_rp_read_voice_setting)), 4068 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4069 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4070 sizeof(struct hci_rp_read_num_supported_iac)), 4071 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4072 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4073 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4074 sizeof(struct hci_rp_read_auth_payload_to)), 4075 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4076 sizeof(struct hci_rp_write_auth_payload_to)), 4077 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4078 sizeof(struct hci_rp_read_local_version)), 4079 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4080 sizeof(struct hci_rp_read_local_commands)), 4081 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4082 sizeof(struct hci_rp_read_local_features)), 4083 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4084 sizeof(struct hci_rp_read_local_ext_features)), 4085 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4086 sizeof(struct hci_rp_read_buffer_size)), 4087 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4088 sizeof(struct hci_rp_read_bd_addr)), 4089 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4090 sizeof(struct hci_rp_read_local_pairing_opts)), 4091 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4092 sizeof(struct hci_rp_read_page_scan_activity)), 4093 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4094 hci_cc_write_page_scan_activity), 4095 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4096 sizeof(struct hci_rp_read_page_scan_type)), 4097 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4098 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size, 4099 sizeof(struct hci_rp_read_data_block_size)), 4100 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode, 4101 sizeof(struct hci_rp_read_flow_control_mode)), 4102 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info, 4103 sizeof(struct hci_rp_read_local_amp_info)), 4104 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4105 sizeof(struct hci_rp_read_clock)), 4106 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4107 sizeof(struct hci_rp_read_enc_key_size)), 4108 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4109 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4110 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4111 hci_cc_read_def_err_data_reporting, 4112 sizeof(struct hci_rp_read_def_err_data_reporting)), 4113 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4114 hci_cc_write_def_err_data_reporting), 4115 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4116 sizeof(struct hci_rp_pin_code_reply)), 4117 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4118 sizeof(struct hci_rp_pin_code_neg_reply)), 4119 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4120 sizeof(struct hci_rp_read_local_oob_data)), 4121 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4122 sizeof(struct hci_rp_read_local_oob_ext_data)), 4123 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4124 sizeof(struct hci_rp_le_read_buffer_size)), 4125 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4126 sizeof(struct hci_rp_le_read_local_features)), 4127 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4128 sizeof(struct hci_rp_le_read_adv_tx_power)), 4129 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4130 sizeof(struct hci_rp_user_confirm_reply)), 4131 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4132 sizeof(struct hci_rp_user_confirm_reply)), 4133 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4134 sizeof(struct hci_rp_user_confirm_reply)), 4135 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4136 sizeof(struct hci_rp_user_confirm_reply)), 4137 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4138 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4139 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4140 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4141 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4142 hci_cc_le_read_accept_list_size, 4143 sizeof(struct hci_rp_le_read_accept_list_size)), 4144 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4145 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4146 hci_cc_le_add_to_accept_list), 4147 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4148 hci_cc_le_del_from_accept_list), 4149 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4150 sizeof(struct hci_rp_le_read_supported_states)), 4151 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4152 sizeof(struct hci_rp_le_read_def_data_len)), 4153 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4154 hci_cc_le_write_def_data_len), 4155 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4156 hci_cc_le_add_to_resolv_list), 4157 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4158 hci_cc_le_del_from_resolv_list), 4159 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4160 hci_cc_le_clear_resolv_list), 4161 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4162 sizeof(struct hci_rp_le_read_resolv_list_size)), 4163 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4164 hci_cc_le_set_addr_resolution_enable), 4165 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4166 sizeof(struct hci_rp_le_read_max_data_len)), 4167 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4168 hci_cc_write_le_host_supported), 4169 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4170 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4171 sizeof(struct hci_rp_read_rssi)), 4172 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4173 sizeof(struct hci_rp_read_tx_power)), 4174 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4175 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4176 hci_cc_le_set_ext_scan_param), 4177 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4178 hci_cc_le_set_ext_scan_enable), 4179 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4180 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4181 hci_cc_le_read_num_adv_sets, 4182 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4183 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4184 sizeof(struct hci_rp_le_set_ext_adv_params)), 4185 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4186 hci_cc_le_set_ext_adv_enable), 4187 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4188 hci_cc_le_set_adv_set_random_addr), 4189 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4190 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4191 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4192 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4193 hci_cc_le_set_per_adv_enable), 4194 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4195 sizeof(struct hci_rp_le_read_transmit_power)), 4196 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4197 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4198 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4199 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4200 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4201 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4202 sizeof(struct hci_rp_le_setup_iso_path)), 4203 }; 4204 4205 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4206 struct sk_buff *skb) 4207 { 4208 void *data; 4209 4210 if (skb->len < cc->min_len) { 4211 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4212 cc->op, skb->len, cc->min_len); 4213 return HCI_ERROR_UNSPECIFIED; 4214 } 4215 4216 /* Just warn if the length is over max_len size it still be possible to 4217 * partially parse the cc so leave to callback to decide if that is 4218 * acceptable. 4219 */ 4220 if (skb->len > cc->max_len) 4221 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4222 cc->op, skb->len, cc->max_len); 4223 4224 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4225 if (!data) 4226 return HCI_ERROR_UNSPECIFIED; 4227 4228 return cc->func(hdev, data, skb); 4229 } 4230 4231 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4232 struct sk_buff *skb, u16 *opcode, u8 *status, 4233 hci_req_complete_t *req_complete, 4234 hci_req_complete_skb_t *req_complete_skb) 4235 { 4236 struct hci_ev_cmd_complete *ev = data; 4237 int i; 4238 4239 *opcode = __le16_to_cpu(ev->opcode); 4240 4241 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4242 4243 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4244 if (hci_cc_table[i].op == *opcode) { 4245 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4246 break; 4247 } 4248 } 4249 4250 if (i == ARRAY_SIZE(hci_cc_table)) { 4251 /* Unknown opcode, assume byte 0 contains the status, so 4252 * that e.g. __hci_cmd_sync() properly returns errors 4253 * for vendor specific commands send by HCI drivers. 4254 * If a vendor doesn't actually follow this convention we may 4255 * need to introduce a vendor CC table in order to properly set 4256 * the status. 4257 */ 4258 *status = skb->data[0]; 4259 } 4260 4261 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4262 4263 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4264 req_complete_skb); 4265 4266 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4267 bt_dev_err(hdev, 4268 "unexpected event for opcode 0x%4.4x", *opcode); 4269 return; 4270 } 4271 4272 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4273 queue_work(hdev->workqueue, &hdev->cmd_work); 4274 } 4275 4276 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4277 { 4278 struct hci_cp_le_create_cis *cp; 4279 bool pending = false; 4280 int i; 4281 4282 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4283 4284 if (!status) 4285 return; 4286 4287 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4288 if (!cp) 4289 return; 4290 4291 hci_dev_lock(hdev); 4292 4293 /* Remove connection if command failed */ 4294 for (i = 0; cp->num_cis; cp->num_cis--, i++) { 4295 struct hci_conn *conn; 4296 u16 handle; 4297 4298 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4299 4300 conn = hci_conn_hash_lookup_handle(hdev, handle); 4301 if (conn) { 4302 if (test_and_clear_bit(HCI_CONN_CREATE_CIS, 4303 &conn->flags)) 4304 pending = true; 4305 conn->state = BT_CLOSED; 4306 hci_connect_cfm(conn, status); 4307 hci_conn_del(conn); 4308 } 4309 } 4310 4311 if (pending) 4312 hci_le_create_cis_pending(hdev); 4313 4314 hci_dev_unlock(hdev); 4315 } 4316 4317 #define HCI_CS(_op, _func) \ 4318 { \ 4319 .op = _op, \ 4320 .func = _func, \ 4321 } 4322 4323 static const struct hci_cs { 4324 u16 op; 4325 void (*func)(struct hci_dev *hdev, __u8 status); 4326 } hci_cs_table[] = { 4327 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4328 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4329 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4330 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4331 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4332 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4333 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4334 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4335 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4336 hci_cs_read_remote_ext_features), 4337 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4338 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4339 hci_cs_enhanced_setup_sync_conn), 4340 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4341 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4342 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4343 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4344 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4345 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4346 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4347 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4348 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4349 }; 4350 4351 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4352 struct sk_buff *skb, u16 *opcode, u8 *status, 4353 hci_req_complete_t *req_complete, 4354 hci_req_complete_skb_t *req_complete_skb) 4355 { 4356 struct hci_ev_cmd_status *ev = data; 4357 int i; 4358 4359 *opcode = __le16_to_cpu(ev->opcode); 4360 *status = ev->status; 4361 4362 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4363 4364 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4365 if (hci_cs_table[i].op == *opcode) { 4366 hci_cs_table[i].func(hdev, ev->status); 4367 break; 4368 } 4369 } 4370 4371 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4372 4373 /* Indicate request completion if the command failed. Also, if 4374 * we're not waiting for a special event and we get a success 4375 * command status we should try to flag the request as completed 4376 * (since for this kind of commands there will not be a command 4377 * complete event). 4378 */ 4379 if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) { 4380 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4381 req_complete_skb); 4382 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4383 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4384 *opcode); 4385 return; 4386 } 4387 } 4388 4389 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4390 queue_work(hdev->workqueue, &hdev->cmd_work); 4391 } 4392 4393 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4394 struct sk_buff *skb) 4395 { 4396 struct hci_ev_hardware_error *ev = data; 4397 4398 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4399 4400 hdev->hw_error_code = ev->code; 4401 4402 queue_work(hdev->req_workqueue, &hdev->error_reset); 4403 } 4404 4405 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4406 struct sk_buff *skb) 4407 { 4408 struct hci_ev_role_change *ev = data; 4409 struct hci_conn *conn; 4410 4411 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4412 4413 hci_dev_lock(hdev); 4414 4415 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4416 if (conn) { 4417 if (!ev->status) 4418 conn->role = ev->role; 4419 4420 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4421 4422 hci_role_switch_cfm(conn, ev->status, ev->role); 4423 } 4424 4425 hci_dev_unlock(hdev); 4426 } 4427 4428 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4429 struct sk_buff *skb) 4430 { 4431 struct hci_ev_num_comp_pkts *ev = data; 4432 int i; 4433 4434 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4435 flex_array_size(ev, handles, ev->num))) 4436 return; 4437 4438 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) { 4439 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode); 4440 return; 4441 } 4442 4443 bt_dev_dbg(hdev, "num %d", ev->num); 4444 4445 for (i = 0; i < ev->num; i++) { 4446 struct hci_comp_pkts_info *info = &ev->handles[i]; 4447 struct hci_conn *conn; 4448 __u16 handle, count; 4449 4450 handle = __le16_to_cpu(info->handle); 4451 count = __le16_to_cpu(info->count); 4452 4453 conn = hci_conn_hash_lookup_handle(hdev, handle); 4454 if (!conn) 4455 continue; 4456 4457 conn->sent -= count; 4458 4459 switch (conn->type) { 4460 case ACL_LINK: 4461 hdev->acl_cnt += count; 4462 if (hdev->acl_cnt > hdev->acl_pkts) 4463 hdev->acl_cnt = hdev->acl_pkts; 4464 break; 4465 4466 case LE_LINK: 4467 if (hdev->le_pkts) { 4468 hdev->le_cnt += count; 4469 if (hdev->le_cnt > hdev->le_pkts) 4470 hdev->le_cnt = hdev->le_pkts; 4471 } else { 4472 hdev->acl_cnt += count; 4473 if (hdev->acl_cnt > hdev->acl_pkts) 4474 hdev->acl_cnt = hdev->acl_pkts; 4475 } 4476 break; 4477 4478 case SCO_LINK: 4479 hdev->sco_cnt += count; 4480 if (hdev->sco_cnt > hdev->sco_pkts) 4481 hdev->sco_cnt = hdev->sco_pkts; 4482 break; 4483 4484 case ISO_LINK: 4485 if (hdev->iso_pkts) { 4486 hdev->iso_cnt += count; 4487 if (hdev->iso_cnt > hdev->iso_pkts) 4488 hdev->iso_cnt = hdev->iso_pkts; 4489 } else if (hdev->le_pkts) { 4490 hdev->le_cnt += count; 4491 if (hdev->le_cnt > hdev->le_pkts) 4492 hdev->le_cnt = hdev->le_pkts; 4493 } else { 4494 hdev->acl_cnt += count; 4495 if (hdev->acl_cnt > hdev->acl_pkts) 4496 hdev->acl_cnt = hdev->acl_pkts; 4497 } 4498 break; 4499 4500 default: 4501 bt_dev_err(hdev, "unknown type %d conn %p", 4502 conn->type, conn); 4503 break; 4504 } 4505 } 4506 4507 queue_work(hdev->workqueue, &hdev->tx_work); 4508 } 4509 4510 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev, 4511 __u16 handle) 4512 { 4513 struct hci_chan *chan; 4514 4515 switch (hdev->dev_type) { 4516 case HCI_PRIMARY: 4517 return hci_conn_hash_lookup_handle(hdev, handle); 4518 case HCI_AMP: 4519 chan = hci_chan_lookup_handle(hdev, handle); 4520 if (chan) 4521 return chan->conn; 4522 break; 4523 default: 4524 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); 4525 break; 4526 } 4527 4528 return NULL; 4529 } 4530 4531 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data, 4532 struct sk_buff *skb) 4533 { 4534 struct hci_ev_num_comp_blocks *ev = data; 4535 int i; 4536 4537 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS, 4538 flex_array_size(ev, handles, ev->num_hndl))) 4539 return; 4540 4541 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) { 4542 bt_dev_err(hdev, "wrong event for mode %d", 4543 hdev->flow_ctl_mode); 4544 return; 4545 } 4546 4547 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks, 4548 ev->num_hndl); 4549 4550 for (i = 0; i < ev->num_hndl; i++) { 4551 struct hci_comp_blocks_info *info = &ev->handles[i]; 4552 struct hci_conn *conn = NULL; 4553 __u16 handle, block_count; 4554 4555 handle = __le16_to_cpu(info->handle); 4556 block_count = __le16_to_cpu(info->blocks); 4557 4558 conn = __hci_conn_lookup_handle(hdev, handle); 4559 if (!conn) 4560 continue; 4561 4562 conn->sent -= block_count; 4563 4564 switch (conn->type) { 4565 case ACL_LINK: 4566 case AMP_LINK: 4567 hdev->block_cnt += block_count; 4568 if (hdev->block_cnt > hdev->num_blocks) 4569 hdev->block_cnt = hdev->num_blocks; 4570 break; 4571 4572 default: 4573 bt_dev_err(hdev, "unknown type %d conn %p", 4574 conn->type, conn); 4575 break; 4576 } 4577 } 4578 4579 queue_work(hdev->workqueue, &hdev->tx_work); 4580 } 4581 4582 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4583 struct sk_buff *skb) 4584 { 4585 struct hci_ev_mode_change *ev = data; 4586 struct hci_conn *conn; 4587 4588 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4589 4590 hci_dev_lock(hdev); 4591 4592 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4593 if (conn) { 4594 conn->mode = ev->mode; 4595 4596 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4597 &conn->flags)) { 4598 if (conn->mode == HCI_CM_ACTIVE) 4599 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4600 else 4601 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4602 } 4603 4604 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4605 hci_sco_setup(conn, ev->status); 4606 } 4607 4608 hci_dev_unlock(hdev); 4609 } 4610 4611 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4612 struct sk_buff *skb) 4613 { 4614 struct hci_ev_pin_code_req *ev = data; 4615 struct hci_conn *conn; 4616 4617 bt_dev_dbg(hdev, ""); 4618 4619 hci_dev_lock(hdev); 4620 4621 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4622 if (!conn) 4623 goto unlock; 4624 4625 if (conn->state == BT_CONNECTED) { 4626 hci_conn_hold(conn); 4627 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4628 hci_conn_drop(conn); 4629 } 4630 4631 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4632 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4633 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4634 sizeof(ev->bdaddr), &ev->bdaddr); 4635 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4636 u8 secure; 4637 4638 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4639 secure = 1; 4640 else 4641 secure = 0; 4642 4643 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4644 } 4645 4646 unlock: 4647 hci_dev_unlock(hdev); 4648 } 4649 4650 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4651 { 4652 if (key_type == HCI_LK_CHANGED_COMBINATION) 4653 return; 4654 4655 conn->pin_length = pin_len; 4656 conn->key_type = key_type; 4657 4658 switch (key_type) { 4659 case HCI_LK_LOCAL_UNIT: 4660 case HCI_LK_REMOTE_UNIT: 4661 case HCI_LK_DEBUG_COMBINATION: 4662 return; 4663 case HCI_LK_COMBINATION: 4664 if (pin_len == 16) 4665 conn->pending_sec_level = BT_SECURITY_HIGH; 4666 else 4667 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4668 break; 4669 case HCI_LK_UNAUTH_COMBINATION_P192: 4670 case HCI_LK_UNAUTH_COMBINATION_P256: 4671 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4672 break; 4673 case HCI_LK_AUTH_COMBINATION_P192: 4674 conn->pending_sec_level = BT_SECURITY_HIGH; 4675 break; 4676 case HCI_LK_AUTH_COMBINATION_P256: 4677 conn->pending_sec_level = BT_SECURITY_FIPS; 4678 break; 4679 } 4680 } 4681 4682 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4683 struct sk_buff *skb) 4684 { 4685 struct hci_ev_link_key_req *ev = data; 4686 struct hci_cp_link_key_reply cp; 4687 struct hci_conn *conn; 4688 struct link_key *key; 4689 4690 bt_dev_dbg(hdev, ""); 4691 4692 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4693 return; 4694 4695 hci_dev_lock(hdev); 4696 4697 key = hci_find_link_key(hdev, &ev->bdaddr); 4698 if (!key) { 4699 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4700 goto not_found; 4701 } 4702 4703 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4704 4705 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4706 if (conn) { 4707 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4708 4709 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4710 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4711 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4712 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4713 goto not_found; 4714 } 4715 4716 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4717 (conn->pending_sec_level == BT_SECURITY_HIGH || 4718 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4719 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4720 goto not_found; 4721 } 4722 4723 conn_set_key(conn, key->type, key->pin_len); 4724 } 4725 4726 bacpy(&cp.bdaddr, &ev->bdaddr); 4727 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4728 4729 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4730 4731 hci_dev_unlock(hdev); 4732 4733 return; 4734 4735 not_found: 4736 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4737 hci_dev_unlock(hdev); 4738 } 4739 4740 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4741 struct sk_buff *skb) 4742 { 4743 struct hci_ev_link_key_notify *ev = data; 4744 struct hci_conn *conn; 4745 struct link_key *key; 4746 bool persistent; 4747 u8 pin_len = 0; 4748 4749 bt_dev_dbg(hdev, ""); 4750 4751 hci_dev_lock(hdev); 4752 4753 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4754 if (!conn) 4755 goto unlock; 4756 4757 /* Ignore NULL link key against CVE-2020-26555 */ 4758 if (!crypto_memneq(ev->link_key, ZERO_KEY, HCI_LINK_KEY_SIZE)) { 4759 bt_dev_dbg(hdev, "Ignore NULL link key (ZERO KEY) for %pMR", 4760 &ev->bdaddr); 4761 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4762 hci_conn_drop(conn); 4763 goto unlock; 4764 } 4765 4766 hci_conn_hold(conn); 4767 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4768 hci_conn_drop(conn); 4769 4770 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4771 conn_set_key(conn, ev->key_type, conn->pin_length); 4772 4773 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4774 goto unlock; 4775 4776 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4777 ev->key_type, pin_len, &persistent); 4778 if (!key) 4779 goto unlock; 4780 4781 /* Update connection information since adding the key will have 4782 * fixed up the type in the case of changed combination keys. 4783 */ 4784 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4785 conn_set_key(conn, key->type, key->pin_len); 4786 4787 mgmt_new_link_key(hdev, key, persistent); 4788 4789 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4790 * is set. If it's not set simply remove the key from the kernel 4791 * list (we've still notified user space about it but with 4792 * store_hint being 0). 4793 */ 4794 if (key->type == HCI_LK_DEBUG_COMBINATION && 4795 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4796 list_del_rcu(&key->list); 4797 kfree_rcu(key, rcu); 4798 goto unlock; 4799 } 4800 4801 if (persistent) 4802 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4803 else 4804 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4805 4806 unlock: 4807 hci_dev_unlock(hdev); 4808 } 4809 4810 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4811 struct sk_buff *skb) 4812 { 4813 struct hci_ev_clock_offset *ev = data; 4814 struct hci_conn *conn; 4815 4816 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4817 4818 hci_dev_lock(hdev); 4819 4820 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4821 if (conn && !ev->status) { 4822 struct inquiry_entry *ie; 4823 4824 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4825 if (ie) { 4826 ie->data.clock_offset = ev->clock_offset; 4827 ie->timestamp = jiffies; 4828 } 4829 } 4830 4831 hci_dev_unlock(hdev); 4832 } 4833 4834 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4835 struct sk_buff *skb) 4836 { 4837 struct hci_ev_pkt_type_change *ev = data; 4838 struct hci_conn *conn; 4839 4840 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4841 4842 hci_dev_lock(hdev); 4843 4844 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4845 if (conn && !ev->status) 4846 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4847 4848 hci_dev_unlock(hdev); 4849 } 4850 4851 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4852 struct sk_buff *skb) 4853 { 4854 struct hci_ev_pscan_rep_mode *ev = data; 4855 struct inquiry_entry *ie; 4856 4857 bt_dev_dbg(hdev, ""); 4858 4859 hci_dev_lock(hdev); 4860 4861 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4862 if (ie) { 4863 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4864 ie->timestamp = jiffies; 4865 } 4866 4867 hci_dev_unlock(hdev); 4868 } 4869 4870 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4871 struct sk_buff *skb) 4872 { 4873 struct hci_ev_inquiry_result_rssi *ev = edata; 4874 struct inquiry_data data; 4875 int i; 4876 4877 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4878 4879 if (!ev->num) 4880 return; 4881 4882 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4883 return; 4884 4885 hci_dev_lock(hdev); 4886 4887 if (skb->len == array_size(ev->num, 4888 sizeof(struct inquiry_info_rssi_pscan))) { 4889 struct inquiry_info_rssi_pscan *info; 4890 4891 for (i = 0; i < ev->num; i++) { 4892 u32 flags; 4893 4894 info = hci_ev_skb_pull(hdev, skb, 4895 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4896 sizeof(*info)); 4897 if (!info) { 4898 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4899 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4900 goto unlock; 4901 } 4902 4903 bacpy(&data.bdaddr, &info->bdaddr); 4904 data.pscan_rep_mode = info->pscan_rep_mode; 4905 data.pscan_period_mode = info->pscan_period_mode; 4906 data.pscan_mode = info->pscan_mode; 4907 memcpy(data.dev_class, info->dev_class, 3); 4908 data.clock_offset = info->clock_offset; 4909 data.rssi = info->rssi; 4910 data.ssp_mode = 0x00; 4911 4912 flags = hci_inquiry_cache_update(hdev, &data, false); 4913 4914 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4915 info->dev_class, info->rssi, 4916 flags, NULL, 0, NULL, 0, 0); 4917 } 4918 } else if (skb->len == array_size(ev->num, 4919 sizeof(struct inquiry_info_rssi))) { 4920 struct inquiry_info_rssi *info; 4921 4922 for (i = 0; i < ev->num; i++) { 4923 u32 flags; 4924 4925 info = hci_ev_skb_pull(hdev, skb, 4926 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4927 sizeof(*info)); 4928 if (!info) { 4929 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4930 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4931 goto unlock; 4932 } 4933 4934 bacpy(&data.bdaddr, &info->bdaddr); 4935 data.pscan_rep_mode = info->pscan_rep_mode; 4936 data.pscan_period_mode = info->pscan_period_mode; 4937 data.pscan_mode = 0x00; 4938 memcpy(data.dev_class, info->dev_class, 3); 4939 data.clock_offset = info->clock_offset; 4940 data.rssi = info->rssi; 4941 data.ssp_mode = 0x00; 4942 4943 flags = hci_inquiry_cache_update(hdev, &data, false); 4944 4945 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4946 info->dev_class, info->rssi, 4947 flags, NULL, 0, NULL, 0, 0); 4948 } 4949 } else { 4950 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4951 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4952 } 4953 unlock: 4954 hci_dev_unlock(hdev); 4955 } 4956 4957 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4958 struct sk_buff *skb) 4959 { 4960 struct hci_ev_remote_ext_features *ev = data; 4961 struct hci_conn *conn; 4962 4963 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4964 4965 hci_dev_lock(hdev); 4966 4967 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4968 if (!conn) 4969 goto unlock; 4970 4971 if (ev->page < HCI_MAX_PAGES) 4972 memcpy(conn->features[ev->page], ev->features, 8); 4973 4974 if (!ev->status && ev->page == 0x01) { 4975 struct inquiry_entry *ie; 4976 4977 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4978 if (ie) 4979 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4980 4981 if (ev->features[0] & LMP_HOST_SSP) { 4982 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4983 } else { 4984 /* It is mandatory by the Bluetooth specification that 4985 * Extended Inquiry Results are only used when Secure 4986 * Simple Pairing is enabled, but some devices violate 4987 * this. 4988 * 4989 * To make these devices work, the internal SSP 4990 * enabled flag needs to be cleared if the remote host 4991 * features do not indicate SSP support */ 4992 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4993 } 4994 4995 if (ev->features[0] & LMP_HOST_SC) 4996 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4997 } 4998 4999 if (conn->state != BT_CONFIG) 5000 goto unlock; 5001 5002 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 5003 struct hci_cp_remote_name_req cp; 5004 memset(&cp, 0, sizeof(cp)); 5005 bacpy(&cp.bdaddr, &conn->dst); 5006 cp.pscan_rep_mode = 0x02; 5007 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 5008 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 5009 mgmt_device_connected(hdev, conn, NULL, 0); 5010 5011 if (!hci_outgoing_auth_needed(hdev, conn)) { 5012 conn->state = BT_CONNECTED; 5013 hci_connect_cfm(conn, ev->status); 5014 hci_conn_drop(conn); 5015 } 5016 5017 unlock: 5018 hci_dev_unlock(hdev); 5019 } 5020 5021 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 5022 struct sk_buff *skb) 5023 { 5024 struct hci_ev_sync_conn_complete *ev = data; 5025 struct hci_conn *conn; 5026 u8 status = ev->status; 5027 5028 switch (ev->link_type) { 5029 case SCO_LINK: 5030 case ESCO_LINK: 5031 break; 5032 default: 5033 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 5034 * for HCI_Synchronous_Connection_Complete is limited to 5035 * either SCO or eSCO 5036 */ 5037 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 5038 return; 5039 } 5040 5041 bt_dev_dbg(hdev, "status 0x%2.2x", status); 5042 5043 hci_dev_lock(hdev); 5044 5045 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 5046 if (!conn) { 5047 if (ev->link_type == ESCO_LINK) 5048 goto unlock; 5049 5050 /* When the link type in the event indicates SCO connection 5051 * and lookup of the connection object fails, then check 5052 * if an eSCO connection object exists. 5053 * 5054 * The core limits the synchronous connections to either 5055 * SCO or eSCO. The eSCO connection is preferred and tried 5056 * to be setup first and until successfully established, 5057 * the link type will be hinted as eSCO. 5058 */ 5059 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 5060 if (!conn) 5061 goto unlock; 5062 } 5063 5064 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 5065 * Processing it more than once per connection can corrupt kernel memory. 5066 * 5067 * As the connection handle is set here for the first time, it indicates 5068 * whether the connection is already set up. 5069 */ 5070 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5071 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 5072 goto unlock; 5073 } 5074 5075 switch (status) { 5076 case 0x00: 5077 status = hci_conn_set_handle(conn, __le16_to_cpu(ev->handle)); 5078 if (status) { 5079 conn->state = BT_CLOSED; 5080 break; 5081 } 5082 5083 conn->state = BT_CONNECTED; 5084 conn->type = ev->link_type; 5085 5086 hci_debugfs_create_conn(conn); 5087 hci_conn_add_sysfs(conn); 5088 break; 5089 5090 case 0x10: /* Connection Accept Timeout */ 5091 case 0x0d: /* Connection Rejected due to Limited Resources */ 5092 case 0x11: /* Unsupported Feature or Parameter Value */ 5093 case 0x1c: /* SCO interval rejected */ 5094 case 0x1a: /* Unsupported Remote Feature */ 5095 case 0x1e: /* Invalid LMP Parameters */ 5096 case 0x1f: /* Unspecified error */ 5097 case 0x20: /* Unsupported LMP Parameter value */ 5098 if (conn->out) { 5099 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 5100 (hdev->esco_type & EDR_ESCO_MASK); 5101 if (hci_setup_sync(conn, conn->parent->handle)) 5102 goto unlock; 5103 } 5104 fallthrough; 5105 5106 default: 5107 conn->state = BT_CLOSED; 5108 break; 5109 } 5110 5111 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5112 /* Notify only in case of SCO over HCI transport data path which 5113 * is zero and non-zero value shall be non-HCI transport data path 5114 */ 5115 if (conn->codec.data_path == 0 && hdev->notify) { 5116 switch (ev->air_mode) { 5117 case 0x02: 5118 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5119 break; 5120 case 0x03: 5121 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5122 break; 5123 } 5124 } 5125 5126 hci_connect_cfm(conn, status); 5127 if (status) 5128 hci_conn_del(conn); 5129 5130 unlock: 5131 hci_dev_unlock(hdev); 5132 } 5133 5134 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5135 { 5136 size_t parsed = 0; 5137 5138 while (parsed < eir_len) { 5139 u8 field_len = eir[0]; 5140 5141 if (field_len == 0) 5142 return parsed; 5143 5144 parsed += field_len + 1; 5145 eir += field_len + 1; 5146 } 5147 5148 return eir_len; 5149 } 5150 5151 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5152 struct sk_buff *skb) 5153 { 5154 struct hci_ev_ext_inquiry_result *ev = edata; 5155 struct inquiry_data data; 5156 size_t eir_len; 5157 int i; 5158 5159 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5160 flex_array_size(ev, info, ev->num))) 5161 return; 5162 5163 bt_dev_dbg(hdev, "num %d", ev->num); 5164 5165 if (!ev->num) 5166 return; 5167 5168 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5169 return; 5170 5171 hci_dev_lock(hdev); 5172 5173 for (i = 0; i < ev->num; i++) { 5174 struct extended_inquiry_info *info = &ev->info[i]; 5175 u32 flags; 5176 bool name_known; 5177 5178 bacpy(&data.bdaddr, &info->bdaddr); 5179 data.pscan_rep_mode = info->pscan_rep_mode; 5180 data.pscan_period_mode = info->pscan_period_mode; 5181 data.pscan_mode = 0x00; 5182 memcpy(data.dev_class, info->dev_class, 3); 5183 data.clock_offset = info->clock_offset; 5184 data.rssi = info->rssi; 5185 data.ssp_mode = 0x01; 5186 5187 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5188 name_known = eir_get_data(info->data, 5189 sizeof(info->data), 5190 EIR_NAME_COMPLETE, NULL); 5191 else 5192 name_known = true; 5193 5194 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5195 5196 eir_len = eir_get_length(info->data, sizeof(info->data)); 5197 5198 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5199 info->dev_class, info->rssi, 5200 flags, info->data, eir_len, NULL, 0, 0); 5201 } 5202 5203 hci_dev_unlock(hdev); 5204 } 5205 5206 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5207 struct sk_buff *skb) 5208 { 5209 struct hci_ev_key_refresh_complete *ev = data; 5210 struct hci_conn *conn; 5211 5212 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5213 __le16_to_cpu(ev->handle)); 5214 5215 hci_dev_lock(hdev); 5216 5217 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5218 if (!conn) 5219 goto unlock; 5220 5221 /* For BR/EDR the necessary steps are taken through the 5222 * auth_complete event. 5223 */ 5224 if (conn->type != LE_LINK) 5225 goto unlock; 5226 5227 if (!ev->status) 5228 conn->sec_level = conn->pending_sec_level; 5229 5230 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5231 5232 if (ev->status && conn->state == BT_CONNECTED) { 5233 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5234 hci_conn_drop(conn); 5235 goto unlock; 5236 } 5237 5238 if (conn->state == BT_CONFIG) { 5239 if (!ev->status) 5240 conn->state = BT_CONNECTED; 5241 5242 hci_connect_cfm(conn, ev->status); 5243 hci_conn_drop(conn); 5244 } else { 5245 hci_auth_cfm(conn, ev->status); 5246 5247 hci_conn_hold(conn); 5248 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5249 hci_conn_drop(conn); 5250 } 5251 5252 unlock: 5253 hci_dev_unlock(hdev); 5254 } 5255 5256 static u8 hci_get_auth_req(struct hci_conn *conn) 5257 { 5258 /* If remote requests no-bonding follow that lead */ 5259 if (conn->remote_auth == HCI_AT_NO_BONDING || 5260 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5261 return conn->remote_auth | (conn->auth_type & 0x01); 5262 5263 /* If both remote and local have enough IO capabilities, require 5264 * MITM protection 5265 */ 5266 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5267 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5268 return conn->remote_auth | 0x01; 5269 5270 /* No MITM protection possible so ignore remote requirement */ 5271 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5272 } 5273 5274 static u8 bredr_oob_data_present(struct hci_conn *conn) 5275 { 5276 struct hci_dev *hdev = conn->hdev; 5277 struct oob_data *data; 5278 5279 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5280 if (!data) 5281 return 0x00; 5282 5283 if (bredr_sc_enabled(hdev)) { 5284 /* When Secure Connections is enabled, then just 5285 * return the present value stored with the OOB 5286 * data. The stored value contains the right present 5287 * information. However it can only be trusted when 5288 * not in Secure Connection Only mode. 5289 */ 5290 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5291 return data->present; 5292 5293 /* When Secure Connections Only mode is enabled, then 5294 * the P-256 values are required. If they are not 5295 * available, then do not declare that OOB data is 5296 * present. 5297 */ 5298 if (!crypto_memneq(data->rand256, ZERO_KEY, 16) || 5299 !crypto_memneq(data->hash256, ZERO_KEY, 16)) 5300 return 0x00; 5301 5302 return 0x02; 5303 } 5304 5305 /* When Secure Connections is not enabled or actually 5306 * not supported by the hardware, then check that if 5307 * P-192 data values are present. 5308 */ 5309 if (!crypto_memneq(data->rand192, ZERO_KEY, 16) || 5310 !crypto_memneq(data->hash192, ZERO_KEY, 16)) 5311 return 0x00; 5312 5313 return 0x01; 5314 } 5315 5316 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5317 struct sk_buff *skb) 5318 { 5319 struct hci_ev_io_capa_request *ev = data; 5320 struct hci_conn *conn; 5321 5322 bt_dev_dbg(hdev, ""); 5323 5324 hci_dev_lock(hdev); 5325 5326 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5327 if (!conn || !hci_conn_ssp_enabled(conn)) 5328 goto unlock; 5329 5330 hci_conn_hold(conn); 5331 5332 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5333 goto unlock; 5334 5335 /* Allow pairing if we're pairable, the initiators of the 5336 * pairing or if the remote is not requesting bonding. 5337 */ 5338 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5339 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5340 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5341 struct hci_cp_io_capability_reply cp; 5342 5343 bacpy(&cp.bdaddr, &ev->bdaddr); 5344 /* Change the IO capability from KeyboardDisplay 5345 * to DisplayYesNo as it is not supported by BT spec. */ 5346 cp.capability = (conn->io_capability == 0x04) ? 5347 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5348 5349 /* If we are initiators, there is no remote information yet */ 5350 if (conn->remote_auth == 0xff) { 5351 /* Request MITM protection if our IO caps allow it 5352 * except for the no-bonding case. 5353 */ 5354 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5355 conn->auth_type != HCI_AT_NO_BONDING) 5356 conn->auth_type |= 0x01; 5357 } else { 5358 conn->auth_type = hci_get_auth_req(conn); 5359 } 5360 5361 /* If we're not bondable, force one of the non-bondable 5362 * authentication requirement values. 5363 */ 5364 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5365 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5366 5367 cp.authentication = conn->auth_type; 5368 cp.oob_data = bredr_oob_data_present(conn); 5369 5370 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5371 sizeof(cp), &cp); 5372 } else { 5373 struct hci_cp_io_capability_neg_reply cp; 5374 5375 bacpy(&cp.bdaddr, &ev->bdaddr); 5376 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5377 5378 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5379 sizeof(cp), &cp); 5380 } 5381 5382 unlock: 5383 hci_dev_unlock(hdev); 5384 } 5385 5386 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5387 struct sk_buff *skb) 5388 { 5389 struct hci_ev_io_capa_reply *ev = data; 5390 struct hci_conn *conn; 5391 5392 bt_dev_dbg(hdev, ""); 5393 5394 hci_dev_lock(hdev); 5395 5396 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5397 if (!conn) 5398 goto unlock; 5399 5400 conn->remote_cap = ev->capability; 5401 conn->remote_auth = ev->authentication; 5402 5403 unlock: 5404 hci_dev_unlock(hdev); 5405 } 5406 5407 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5408 struct sk_buff *skb) 5409 { 5410 struct hci_ev_user_confirm_req *ev = data; 5411 int loc_mitm, rem_mitm, confirm_hint = 0; 5412 struct hci_conn *conn; 5413 5414 bt_dev_dbg(hdev, ""); 5415 5416 hci_dev_lock(hdev); 5417 5418 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5419 goto unlock; 5420 5421 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5422 if (!conn) 5423 goto unlock; 5424 5425 loc_mitm = (conn->auth_type & 0x01); 5426 rem_mitm = (conn->remote_auth & 0x01); 5427 5428 /* If we require MITM but the remote device can't provide that 5429 * (it has NoInputNoOutput) then reject the confirmation 5430 * request. We check the security level here since it doesn't 5431 * necessarily match conn->auth_type. 5432 */ 5433 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5434 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5435 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5436 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5437 sizeof(ev->bdaddr), &ev->bdaddr); 5438 goto unlock; 5439 } 5440 5441 /* If no side requires MITM protection; auto-accept */ 5442 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5443 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5444 5445 /* If we're not the initiators request authorization to 5446 * proceed from user space (mgmt_user_confirm with 5447 * confirm_hint set to 1). The exception is if neither 5448 * side had MITM or if the local IO capability is 5449 * NoInputNoOutput, in which case we do auto-accept 5450 */ 5451 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5452 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5453 (loc_mitm || rem_mitm)) { 5454 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5455 confirm_hint = 1; 5456 goto confirm; 5457 } 5458 5459 /* If there already exists link key in local host, leave the 5460 * decision to user space since the remote device could be 5461 * legitimate or malicious. 5462 */ 5463 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5464 bt_dev_dbg(hdev, "Local host already has link key"); 5465 confirm_hint = 1; 5466 goto confirm; 5467 } 5468 5469 BT_DBG("Auto-accept of user confirmation with %ums delay", 5470 hdev->auto_accept_delay); 5471 5472 if (hdev->auto_accept_delay > 0) { 5473 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5474 queue_delayed_work(conn->hdev->workqueue, 5475 &conn->auto_accept_work, delay); 5476 goto unlock; 5477 } 5478 5479 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5480 sizeof(ev->bdaddr), &ev->bdaddr); 5481 goto unlock; 5482 } 5483 5484 confirm: 5485 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5486 le32_to_cpu(ev->passkey), confirm_hint); 5487 5488 unlock: 5489 hci_dev_unlock(hdev); 5490 } 5491 5492 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5493 struct sk_buff *skb) 5494 { 5495 struct hci_ev_user_passkey_req *ev = data; 5496 5497 bt_dev_dbg(hdev, ""); 5498 5499 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5500 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5501 } 5502 5503 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5504 struct sk_buff *skb) 5505 { 5506 struct hci_ev_user_passkey_notify *ev = data; 5507 struct hci_conn *conn; 5508 5509 bt_dev_dbg(hdev, ""); 5510 5511 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5512 if (!conn) 5513 return; 5514 5515 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5516 conn->passkey_entered = 0; 5517 5518 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5519 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5520 conn->dst_type, conn->passkey_notify, 5521 conn->passkey_entered); 5522 } 5523 5524 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5525 struct sk_buff *skb) 5526 { 5527 struct hci_ev_keypress_notify *ev = data; 5528 struct hci_conn *conn; 5529 5530 bt_dev_dbg(hdev, ""); 5531 5532 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5533 if (!conn) 5534 return; 5535 5536 switch (ev->type) { 5537 case HCI_KEYPRESS_STARTED: 5538 conn->passkey_entered = 0; 5539 return; 5540 5541 case HCI_KEYPRESS_ENTERED: 5542 conn->passkey_entered++; 5543 break; 5544 5545 case HCI_KEYPRESS_ERASED: 5546 conn->passkey_entered--; 5547 break; 5548 5549 case HCI_KEYPRESS_CLEARED: 5550 conn->passkey_entered = 0; 5551 break; 5552 5553 case HCI_KEYPRESS_COMPLETED: 5554 return; 5555 } 5556 5557 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5558 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5559 conn->dst_type, conn->passkey_notify, 5560 conn->passkey_entered); 5561 } 5562 5563 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5564 struct sk_buff *skb) 5565 { 5566 struct hci_ev_simple_pair_complete *ev = data; 5567 struct hci_conn *conn; 5568 5569 bt_dev_dbg(hdev, ""); 5570 5571 hci_dev_lock(hdev); 5572 5573 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5574 if (!conn || !hci_conn_ssp_enabled(conn)) 5575 goto unlock; 5576 5577 /* Reset the authentication requirement to unknown */ 5578 conn->remote_auth = 0xff; 5579 5580 /* To avoid duplicate auth_failed events to user space we check 5581 * the HCI_CONN_AUTH_PEND flag which will be set if we 5582 * initiated the authentication. A traditional auth_complete 5583 * event gets always produced as initiator and is also mapped to 5584 * the mgmt_auth_failed event */ 5585 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5586 mgmt_auth_failed(conn, ev->status); 5587 5588 hci_conn_drop(conn); 5589 5590 unlock: 5591 hci_dev_unlock(hdev); 5592 } 5593 5594 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5595 struct sk_buff *skb) 5596 { 5597 struct hci_ev_remote_host_features *ev = data; 5598 struct inquiry_entry *ie; 5599 struct hci_conn *conn; 5600 5601 bt_dev_dbg(hdev, ""); 5602 5603 hci_dev_lock(hdev); 5604 5605 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5606 if (conn) 5607 memcpy(conn->features[1], ev->features, 8); 5608 5609 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5610 if (ie) 5611 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5612 5613 hci_dev_unlock(hdev); 5614 } 5615 5616 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5617 struct sk_buff *skb) 5618 { 5619 struct hci_ev_remote_oob_data_request *ev = edata; 5620 struct oob_data *data; 5621 5622 bt_dev_dbg(hdev, ""); 5623 5624 hci_dev_lock(hdev); 5625 5626 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5627 goto unlock; 5628 5629 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5630 if (!data) { 5631 struct hci_cp_remote_oob_data_neg_reply cp; 5632 5633 bacpy(&cp.bdaddr, &ev->bdaddr); 5634 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5635 sizeof(cp), &cp); 5636 goto unlock; 5637 } 5638 5639 if (bredr_sc_enabled(hdev)) { 5640 struct hci_cp_remote_oob_ext_data_reply cp; 5641 5642 bacpy(&cp.bdaddr, &ev->bdaddr); 5643 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5644 memset(cp.hash192, 0, sizeof(cp.hash192)); 5645 memset(cp.rand192, 0, sizeof(cp.rand192)); 5646 } else { 5647 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5648 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5649 } 5650 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5651 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5652 5653 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5654 sizeof(cp), &cp); 5655 } else { 5656 struct hci_cp_remote_oob_data_reply cp; 5657 5658 bacpy(&cp.bdaddr, &ev->bdaddr); 5659 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5660 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5661 5662 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5663 sizeof(cp), &cp); 5664 } 5665 5666 unlock: 5667 hci_dev_unlock(hdev); 5668 } 5669 5670 #if IS_ENABLED(CONFIG_BT_HS) 5671 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data, 5672 struct sk_buff *skb) 5673 { 5674 struct hci_ev_channel_selected *ev = data; 5675 struct hci_conn *hcon; 5676 5677 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle); 5678 5679 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5680 if (!hcon) 5681 return; 5682 5683 amp_read_loc_assoc_final_data(hdev, hcon); 5684 } 5685 5686 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data, 5687 struct sk_buff *skb) 5688 { 5689 struct hci_ev_phy_link_complete *ev = data; 5690 struct hci_conn *hcon, *bredr_hcon; 5691 5692 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle, 5693 ev->status); 5694 5695 hci_dev_lock(hdev); 5696 5697 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5698 if (!hcon) 5699 goto unlock; 5700 5701 if (!hcon->amp_mgr) 5702 goto unlock; 5703 5704 if (ev->status) { 5705 hci_conn_del(hcon); 5706 goto unlock; 5707 } 5708 5709 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon; 5710 5711 hcon->state = BT_CONNECTED; 5712 bacpy(&hcon->dst, &bredr_hcon->dst); 5713 5714 hci_conn_hold(hcon); 5715 hcon->disc_timeout = HCI_DISCONN_TIMEOUT; 5716 hci_conn_drop(hcon); 5717 5718 hci_debugfs_create_conn(hcon); 5719 hci_conn_add_sysfs(hcon); 5720 5721 amp_physical_cfm(bredr_hcon, hcon); 5722 5723 unlock: 5724 hci_dev_unlock(hdev); 5725 } 5726 5727 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data, 5728 struct sk_buff *skb) 5729 { 5730 struct hci_ev_logical_link_complete *ev = data; 5731 struct hci_conn *hcon; 5732 struct hci_chan *hchan; 5733 struct amp_mgr *mgr; 5734 5735 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x", 5736 le16_to_cpu(ev->handle), ev->phy_handle, ev->status); 5737 5738 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5739 if (!hcon) 5740 return; 5741 5742 /* Create AMP hchan */ 5743 hchan = hci_chan_create(hcon); 5744 if (!hchan) 5745 return; 5746 5747 hchan->handle = le16_to_cpu(ev->handle); 5748 hchan->amp = true; 5749 5750 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan); 5751 5752 mgr = hcon->amp_mgr; 5753 if (mgr && mgr->bredr_chan) { 5754 struct l2cap_chan *bredr_chan = mgr->bredr_chan; 5755 5756 l2cap_chan_lock(bredr_chan); 5757 5758 bredr_chan->conn->mtu = hdev->block_mtu; 5759 l2cap_logical_cfm(bredr_chan, hchan, 0); 5760 hci_conn_hold(hcon); 5761 5762 l2cap_chan_unlock(bredr_chan); 5763 } 5764 } 5765 5766 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data, 5767 struct sk_buff *skb) 5768 { 5769 struct hci_ev_disconn_logical_link_complete *ev = data; 5770 struct hci_chan *hchan; 5771 5772 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", 5773 le16_to_cpu(ev->handle), ev->status); 5774 5775 if (ev->status) 5776 return; 5777 5778 hci_dev_lock(hdev); 5779 5780 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle)); 5781 if (!hchan || !hchan->amp) 5782 goto unlock; 5783 5784 amp_destroy_logical_link(hchan, ev->reason); 5785 5786 unlock: 5787 hci_dev_unlock(hdev); 5788 } 5789 5790 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data, 5791 struct sk_buff *skb) 5792 { 5793 struct hci_ev_disconn_phy_link_complete *ev = data; 5794 struct hci_conn *hcon; 5795 5796 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5797 5798 if (ev->status) 5799 return; 5800 5801 hci_dev_lock(hdev); 5802 5803 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5804 if (hcon && hcon->type == AMP_LINK) { 5805 hcon->state = BT_CLOSED; 5806 hci_disconn_cfm(hcon, ev->reason); 5807 hci_conn_del(hcon); 5808 } 5809 5810 hci_dev_unlock(hdev); 5811 } 5812 #endif 5813 5814 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5815 u8 bdaddr_type, bdaddr_t *local_rpa) 5816 { 5817 if (conn->out) { 5818 conn->dst_type = bdaddr_type; 5819 conn->resp_addr_type = bdaddr_type; 5820 bacpy(&conn->resp_addr, bdaddr); 5821 5822 /* Check if the controller has set a Local RPA then it must be 5823 * used instead or hdev->rpa. 5824 */ 5825 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5826 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5827 bacpy(&conn->init_addr, local_rpa); 5828 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5829 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5830 bacpy(&conn->init_addr, &conn->hdev->rpa); 5831 } else { 5832 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5833 &conn->init_addr_type); 5834 } 5835 } else { 5836 conn->resp_addr_type = conn->hdev->adv_addr_type; 5837 /* Check if the controller has set a Local RPA then it must be 5838 * used instead or hdev->rpa. 5839 */ 5840 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5841 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5842 bacpy(&conn->resp_addr, local_rpa); 5843 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5844 /* In case of ext adv, resp_addr will be updated in 5845 * Adv Terminated event. 5846 */ 5847 if (!ext_adv_capable(conn->hdev)) 5848 bacpy(&conn->resp_addr, 5849 &conn->hdev->random_addr); 5850 } else { 5851 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5852 } 5853 5854 conn->init_addr_type = bdaddr_type; 5855 bacpy(&conn->init_addr, bdaddr); 5856 5857 /* For incoming connections, set the default minimum 5858 * and maximum connection interval. They will be used 5859 * to check if the parameters are in range and if not 5860 * trigger the connection update procedure. 5861 */ 5862 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5863 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5864 } 5865 } 5866 5867 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5868 bdaddr_t *bdaddr, u8 bdaddr_type, 5869 bdaddr_t *local_rpa, u8 role, u16 handle, 5870 u16 interval, u16 latency, 5871 u16 supervision_timeout) 5872 { 5873 struct hci_conn_params *params; 5874 struct hci_conn *conn; 5875 struct smp_irk *irk; 5876 u8 addr_type; 5877 5878 hci_dev_lock(hdev); 5879 5880 /* All controllers implicitly stop advertising in the event of a 5881 * connection, so ensure that the state bit is cleared. 5882 */ 5883 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5884 5885 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5886 if (!conn) { 5887 /* In case of error status and there is no connection pending 5888 * just unlock as there is nothing to cleanup. 5889 */ 5890 if (status) 5891 goto unlock; 5892 5893 conn = hci_conn_add_unset(hdev, LE_LINK, bdaddr, role); 5894 if (!conn) { 5895 bt_dev_err(hdev, "no memory for new connection"); 5896 goto unlock; 5897 } 5898 5899 conn->dst_type = bdaddr_type; 5900 5901 /* If we didn't have a hci_conn object previously 5902 * but we're in central role this must be something 5903 * initiated using an accept list. Since accept list based 5904 * connections are not "first class citizens" we don't 5905 * have full tracking of them. Therefore, we go ahead 5906 * with a "best effort" approach of determining the 5907 * initiator address based on the HCI_PRIVACY flag. 5908 */ 5909 if (conn->out) { 5910 conn->resp_addr_type = bdaddr_type; 5911 bacpy(&conn->resp_addr, bdaddr); 5912 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5913 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5914 bacpy(&conn->init_addr, &hdev->rpa); 5915 } else { 5916 hci_copy_identity_address(hdev, 5917 &conn->init_addr, 5918 &conn->init_addr_type); 5919 } 5920 } 5921 } else { 5922 cancel_delayed_work(&conn->le_conn_timeout); 5923 } 5924 5925 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5926 * Processing it more than once per connection can corrupt kernel memory. 5927 * 5928 * As the connection handle is set here for the first time, it indicates 5929 * whether the connection is already set up. 5930 */ 5931 if (!HCI_CONN_HANDLE_UNSET(conn->handle)) { 5932 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5933 goto unlock; 5934 } 5935 5936 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5937 5938 /* Lookup the identity address from the stored connection 5939 * address and address type. 5940 * 5941 * When establishing connections to an identity address, the 5942 * connection procedure will store the resolvable random 5943 * address first. Now if it can be converted back into the 5944 * identity address, start using the identity address from 5945 * now on. 5946 */ 5947 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5948 if (irk) { 5949 bacpy(&conn->dst, &irk->bdaddr); 5950 conn->dst_type = irk->addr_type; 5951 } 5952 5953 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5954 5955 /* All connection failure handling is taken care of by the 5956 * hci_conn_failed function which is triggered by the HCI 5957 * request completion callbacks used for connecting. 5958 */ 5959 if (status || hci_conn_set_handle(conn, handle)) 5960 goto unlock; 5961 5962 /* Drop the connection if it has been aborted */ 5963 if (test_bit(HCI_CONN_CANCEL, &conn->flags)) { 5964 hci_conn_drop(conn); 5965 goto unlock; 5966 } 5967 5968 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5969 addr_type = BDADDR_LE_PUBLIC; 5970 else 5971 addr_type = BDADDR_LE_RANDOM; 5972 5973 /* Drop the connection if the device is blocked */ 5974 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5975 hci_conn_drop(conn); 5976 goto unlock; 5977 } 5978 5979 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 5980 mgmt_device_connected(hdev, conn, NULL, 0); 5981 5982 conn->sec_level = BT_SECURITY_LOW; 5983 conn->state = BT_CONFIG; 5984 5985 /* Store current advertising instance as connection advertising instance 5986 * when sotfware rotation is in use so it can be re-enabled when 5987 * disconnected. 5988 */ 5989 if (!ext_adv_capable(hdev)) 5990 conn->adv_instance = hdev->cur_adv_instance; 5991 5992 conn->le_conn_interval = interval; 5993 conn->le_conn_latency = latency; 5994 conn->le_supv_timeout = supervision_timeout; 5995 5996 hci_debugfs_create_conn(conn); 5997 hci_conn_add_sysfs(conn); 5998 5999 /* The remote features procedure is defined for central 6000 * role only. So only in case of an initiated connection 6001 * request the remote features. 6002 * 6003 * If the local controller supports peripheral-initiated features 6004 * exchange, then requesting the remote features in peripheral 6005 * role is possible. Otherwise just transition into the 6006 * connected state without requesting the remote features. 6007 */ 6008 if (conn->out || 6009 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 6010 struct hci_cp_le_read_remote_features cp; 6011 6012 cp.handle = __cpu_to_le16(conn->handle); 6013 6014 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 6015 sizeof(cp), &cp); 6016 6017 hci_conn_hold(conn); 6018 } else { 6019 conn->state = BT_CONNECTED; 6020 hci_connect_cfm(conn, status); 6021 } 6022 6023 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 6024 conn->dst_type); 6025 if (params) { 6026 hci_pend_le_list_del_init(params); 6027 if (params->conn) { 6028 hci_conn_drop(params->conn); 6029 hci_conn_put(params->conn); 6030 params->conn = NULL; 6031 } 6032 } 6033 6034 unlock: 6035 hci_update_passive_scan(hdev); 6036 hci_dev_unlock(hdev); 6037 } 6038 6039 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 6040 struct sk_buff *skb) 6041 { 6042 struct hci_ev_le_conn_complete *ev = data; 6043 6044 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6045 6046 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 6047 NULL, ev->role, le16_to_cpu(ev->handle), 6048 le16_to_cpu(ev->interval), 6049 le16_to_cpu(ev->latency), 6050 le16_to_cpu(ev->supervision_timeout)); 6051 } 6052 6053 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 6054 struct sk_buff *skb) 6055 { 6056 struct hci_ev_le_enh_conn_complete *ev = data; 6057 6058 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6059 6060 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 6061 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 6062 le16_to_cpu(ev->interval), 6063 le16_to_cpu(ev->latency), 6064 le16_to_cpu(ev->supervision_timeout)); 6065 } 6066 6067 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 6068 struct sk_buff *skb) 6069 { 6070 struct hci_evt_le_ext_adv_set_term *ev = data; 6071 struct hci_conn *conn; 6072 struct adv_info *adv, *n; 6073 6074 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6075 6076 /* The Bluetooth Core 5.3 specification clearly states that this event 6077 * shall not be sent when the Host disables the advertising set. So in 6078 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 6079 * 6080 * When the Host disables an advertising set, all cleanup is done via 6081 * its command callback and not needed to be duplicated here. 6082 */ 6083 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 6084 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 6085 return; 6086 } 6087 6088 hci_dev_lock(hdev); 6089 6090 adv = hci_find_adv_instance(hdev, ev->handle); 6091 6092 if (ev->status) { 6093 if (!adv) 6094 goto unlock; 6095 6096 /* Remove advertising as it has been terminated */ 6097 hci_remove_adv_instance(hdev, ev->handle); 6098 mgmt_advertising_removed(NULL, hdev, ev->handle); 6099 6100 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 6101 if (adv->enabled) 6102 goto unlock; 6103 } 6104 6105 /* We are no longer advertising, clear HCI_LE_ADV */ 6106 hci_dev_clear_flag(hdev, HCI_LE_ADV); 6107 goto unlock; 6108 } 6109 6110 if (adv) 6111 adv->enabled = false; 6112 6113 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 6114 if (conn) { 6115 /* Store handle in the connection so the correct advertising 6116 * instance can be re-enabled when disconnected. 6117 */ 6118 conn->adv_instance = ev->handle; 6119 6120 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 6121 bacmp(&conn->resp_addr, BDADDR_ANY)) 6122 goto unlock; 6123 6124 if (!ev->handle) { 6125 bacpy(&conn->resp_addr, &hdev->random_addr); 6126 goto unlock; 6127 } 6128 6129 if (adv) 6130 bacpy(&conn->resp_addr, &adv->random_addr); 6131 } 6132 6133 unlock: 6134 hci_dev_unlock(hdev); 6135 } 6136 6137 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 6138 struct sk_buff *skb) 6139 { 6140 struct hci_ev_le_conn_update_complete *ev = data; 6141 struct hci_conn *conn; 6142 6143 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6144 6145 if (ev->status) 6146 return; 6147 6148 hci_dev_lock(hdev); 6149 6150 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6151 if (conn) { 6152 conn->le_conn_interval = le16_to_cpu(ev->interval); 6153 conn->le_conn_latency = le16_to_cpu(ev->latency); 6154 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 6155 } 6156 6157 hci_dev_unlock(hdev); 6158 } 6159 6160 /* This function requires the caller holds hdev->lock */ 6161 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 6162 bdaddr_t *addr, 6163 u8 addr_type, bool addr_resolved, 6164 u8 adv_type) 6165 { 6166 struct hci_conn *conn; 6167 struct hci_conn_params *params; 6168 6169 /* If the event is not connectable don't proceed further */ 6170 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 6171 return NULL; 6172 6173 /* Ignore if the device is blocked or hdev is suspended */ 6174 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 6175 hdev->suspended) 6176 return NULL; 6177 6178 /* Most controller will fail if we try to create new connections 6179 * while we have an existing one in peripheral role. 6180 */ 6181 if (hdev->conn_hash.le_num_peripheral > 0 && 6182 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || 6183 !(hdev->le_states[3] & 0x10))) 6184 return NULL; 6185 6186 /* If we're not connectable only connect devices that we have in 6187 * our pend_le_conns list. 6188 */ 6189 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 6190 addr_type); 6191 if (!params) 6192 return NULL; 6193 6194 if (!params->explicit_connect) { 6195 switch (params->auto_connect) { 6196 case HCI_AUTO_CONN_DIRECT: 6197 /* Only devices advertising with ADV_DIRECT_IND are 6198 * triggering a connection attempt. This is allowing 6199 * incoming connections from peripheral devices. 6200 */ 6201 if (adv_type != LE_ADV_DIRECT_IND) 6202 return NULL; 6203 break; 6204 case HCI_AUTO_CONN_ALWAYS: 6205 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 6206 * are triggering a connection attempt. This means 6207 * that incoming connections from peripheral device are 6208 * accepted and also outgoing connections to peripheral 6209 * devices are established when found. 6210 */ 6211 break; 6212 default: 6213 return NULL; 6214 } 6215 } 6216 6217 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 6218 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 6219 HCI_ROLE_MASTER); 6220 if (!IS_ERR(conn)) { 6221 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 6222 * by higher layer that tried to connect, if no then 6223 * store the pointer since we don't really have any 6224 * other owner of the object besides the params that 6225 * triggered it. This way we can abort the connection if 6226 * the parameters get removed and keep the reference 6227 * count consistent once the connection is established. 6228 */ 6229 6230 if (!params->explicit_connect) 6231 params->conn = hci_conn_get(conn); 6232 6233 return conn; 6234 } 6235 6236 switch (PTR_ERR(conn)) { 6237 case -EBUSY: 6238 /* If hci_connect() returns -EBUSY it means there is already 6239 * an LE connection attempt going on. Since controllers don't 6240 * support more than one connection attempt at the time, we 6241 * don't consider this an error case. 6242 */ 6243 break; 6244 default: 6245 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 6246 return NULL; 6247 } 6248 6249 return NULL; 6250 } 6251 6252 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6253 u8 bdaddr_type, bdaddr_t *direct_addr, 6254 u8 direct_addr_type, s8 rssi, u8 *data, u8 len, 6255 bool ext_adv, bool ctl_time, u64 instant) 6256 { 6257 struct discovery_state *d = &hdev->discovery; 6258 struct smp_irk *irk; 6259 struct hci_conn *conn; 6260 bool match, bdaddr_resolved; 6261 u32 flags; 6262 u8 *ptr; 6263 6264 switch (type) { 6265 case LE_ADV_IND: 6266 case LE_ADV_DIRECT_IND: 6267 case LE_ADV_SCAN_IND: 6268 case LE_ADV_NONCONN_IND: 6269 case LE_ADV_SCAN_RSP: 6270 break; 6271 default: 6272 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6273 "type: 0x%02x", type); 6274 return; 6275 } 6276 6277 if (len > max_adv_len(hdev)) { 6278 bt_dev_err_ratelimited(hdev, 6279 "adv larger than maximum supported"); 6280 return; 6281 } 6282 6283 /* Find the end of the data in case the report contains padded zero 6284 * bytes at the end causing an invalid length value. 6285 * 6286 * When data is NULL, len is 0 so there is no need for extra ptr 6287 * check as 'ptr < data + 0' is already false in such case. 6288 */ 6289 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6290 if (ptr + 1 + *ptr > data + len) 6291 break; 6292 } 6293 6294 /* Adjust for actual length. This handles the case when remote 6295 * device is advertising with incorrect data length. 6296 */ 6297 len = ptr - data; 6298 6299 /* If the direct address is present, then this report is from 6300 * a LE Direct Advertising Report event. In that case it is 6301 * important to see if the address is matching the local 6302 * controller address. 6303 */ 6304 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6305 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6306 &bdaddr_resolved); 6307 6308 /* Only resolvable random addresses are valid for these 6309 * kind of reports and others can be ignored. 6310 */ 6311 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6312 return; 6313 6314 /* If the controller is not using resolvable random 6315 * addresses, then this report can be ignored. 6316 */ 6317 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6318 return; 6319 6320 /* If the local IRK of the controller does not match 6321 * with the resolvable random address provided, then 6322 * this report can be ignored. 6323 */ 6324 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6325 return; 6326 } 6327 6328 /* Check if we need to convert to identity address */ 6329 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6330 if (irk) { 6331 bdaddr = &irk->bdaddr; 6332 bdaddr_type = irk->addr_type; 6333 } 6334 6335 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6336 6337 /* Check if we have been requested to connect to this device. 6338 * 6339 * direct_addr is set only for directed advertising reports (it is NULL 6340 * for advertising reports) and is already verified to be RPA above. 6341 */ 6342 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6343 type); 6344 if (!ext_adv && conn && type == LE_ADV_IND && 6345 len <= max_adv_len(hdev)) { 6346 /* Store report for later inclusion by 6347 * mgmt_device_connected 6348 */ 6349 memcpy(conn->le_adv_data, data, len); 6350 conn->le_adv_data_len = len; 6351 } 6352 6353 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6354 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6355 else 6356 flags = 0; 6357 6358 /* All scan results should be sent up for Mesh systems */ 6359 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6360 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6361 rssi, flags, data, len, NULL, 0, instant); 6362 return; 6363 } 6364 6365 /* Passive scanning shouldn't trigger any device found events, 6366 * except for devices marked as CONN_REPORT for which we do send 6367 * device found events, or advertisement monitoring requested. 6368 */ 6369 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6370 if (type == LE_ADV_DIRECT_IND) 6371 return; 6372 6373 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6374 bdaddr, bdaddr_type) && 6375 idr_is_empty(&hdev->adv_monitors_idr)) 6376 return; 6377 6378 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6379 rssi, flags, data, len, NULL, 0, 0); 6380 return; 6381 } 6382 6383 /* When receiving a scan response, then there is no way to 6384 * know if the remote device is connectable or not. However 6385 * since scan responses are merged with a previously seen 6386 * advertising report, the flags field from that report 6387 * will be used. 6388 * 6389 * In the unlikely case that a controller just sends a scan 6390 * response event that doesn't match the pending report, then 6391 * it is marked as a standalone SCAN_RSP. 6392 */ 6393 if (type == LE_ADV_SCAN_RSP) 6394 flags = MGMT_DEV_FOUND_SCAN_RSP; 6395 6396 /* If there's nothing pending either store the data from this 6397 * event or send an immediate device found event if the data 6398 * should not be stored for later. 6399 */ 6400 if (!ext_adv && !has_pending_adv_report(hdev)) { 6401 /* If the report will trigger a SCAN_REQ store it for 6402 * later merging. 6403 */ 6404 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6405 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6406 rssi, flags, data, len); 6407 return; 6408 } 6409 6410 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6411 rssi, flags, data, len, NULL, 0, 0); 6412 return; 6413 } 6414 6415 /* Check if the pending report is for the same device as the new one */ 6416 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6417 bdaddr_type == d->last_adv_addr_type); 6418 6419 /* If the pending data doesn't match this report or this isn't a 6420 * scan response (e.g. we got a duplicate ADV_IND) then force 6421 * sending of the pending data. 6422 */ 6423 if (type != LE_ADV_SCAN_RSP || !match) { 6424 /* Send out whatever is in the cache, but skip duplicates */ 6425 if (!match) 6426 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6427 d->last_adv_addr_type, NULL, 6428 d->last_adv_rssi, d->last_adv_flags, 6429 d->last_adv_data, 6430 d->last_adv_data_len, NULL, 0, 0); 6431 6432 /* If the new report will trigger a SCAN_REQ store it for 6433 * later merging. 6434 */ 6435 if (!ext_adv && (type == LE_ADV_IND || 6436 type == LE_ADV_SCAN_IND)) { 6437 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6438 rssi, flags, data, len); 6439 return; 6440 } 6441 6442 /* The advertising reports cannot be merged, so clear 6443 * the pending report and send out a device found event. 6444 */ 6445 clear_pending_adv_report(hdev); 6446 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6447 rssi, flags, data, len, NULL, 0, 0); 6448 return; 6449 } 6450 6451 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6452 * the new event is a SCAN_RSP. We can therefore proceed with 6453 * sending a merged device found event. 6454 */ 6455 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6456 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6457 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6458 clear_pending_adv_report(hdev); 6459 } 6460 6461 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6462 struct sk_buff *skb) 6463 { 6464 struct hci_ev_le_advertising_report *ev = data; 6465 u64 instant = jiffies; 6466 6467 if (!ev->num) 6468 return; 6469 6470 hci_dev_lock(hdev); 6471 6472 while (ev->num--) { 6473 struct hci_ev_le_advertising_info *info; 6474 s8 rssi; 6475 6476 info = hci_le_ev_skb_pull(hdev, skb, 6477 HCI_EV_LE_ADVERTISING_REPORT, 6478 sizeof(*info)); 6479 if (!info) 6480 break; 6481 6482 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6483 info->length + 1)) 6484 break; 6485 6486 if (info->length <= max_adv_len(hdev)) { 6487 rssi = info->data[info->length]; 6488 process_adv_report(hdev, info->type, &info->bdaddr, 6489 info->bdaddr_type, NULL, 0, rssi, 6490 info->data, info->length, false, 6491 false, instant); 6492 } else { 6493 bt_dev_err(hdev, "Dropping invalid advertising data"); 6494 } 6495 } 6496 6497 hci_dev_unlock(hdev); 6498 } 6499 6500 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6501 { 6502 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6503 switch (evt_type) { 6504 case LE_LEGACY_ADV_IND: 6505 return LE_ADV_IND; 6506 case LE_LEGACY_ADV_DIRECT_IND: 6507 return LE_ADV_DIRECT_IND; 6508 case LE_LEGACY_ADV_SCAN_IND: 6509 return LE_ADV_SCAN_IND; 6510 case LE_LEGACY_NONCONN_IND: 6511 return LE_ADV_NONCONN_IND; 6512 case LE_LEGACY_SCAN_RSP_ADV: 6513 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6514 return LE_ADV_SCAN_RSP; 6515 } 6516 6517 goto invalid; 6518 } 6519 6520 if (evt_type & LE_EXT_ADV_CONN_IND) { 6521 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6522 return LE_ADV_DIRECT_IND; 6523 6524 return LE_ADV_IND; 6525 } 6526 6527 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6528 return LE_ADV_SCAN_RSP; 6529 6530 if (evt_type & LE_EXT_ADV_SCAN_IND) 6531 return LE_ADV_SCAN_IND; 6532 6533 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6534 evt_type & LE_EXT_ADV_DIRECT_IND) 6535 return LE_ADV_NONCONN_IND; 6536 6537 invalid: 6538 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6539 evt_type); 6540 6541 return LE_ADV_INVALID; 6542 } 6543 6544 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6545 struct sk_buff *skb) 6546 { 6547 struct hci_ev_le_ext_adv_report *ev = data; 6548 u64 instant = jiffies; 6549 6550 if (!ev->num) 6551 return; 6552 6553 hci_dev_lock(hdev); 6554 6555 while (ev->num--) { 6556 struct hci_ev_le_ext_adv_info *info; 6557 u8 legacy_evt_type; 6558 u16 evt_type; 6559 6560 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6561 sizeof(*info)); 6562 if (!info) 6563 break; 6564 6565 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6566 info->length)) 6567 break; 6568 6569 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6570 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6571 if (legacy_evt_type != LE_ADV_INVALID) { 6572 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6573 info->bdaddr_type, NULL, 0, 6574 info->rssi, info->data, info->length, 6575 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6576 false, instant); 6577 } 6578 } 6579 6580 hci_dev_unlock(hdev); 6581 } 6582 6583 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6584 { 6585 struct hci_cp_le_pa_term_sync cp; 6586 6587 memset(&cp, 0, sizeof(cp)); 6588 cp.handle = handle; 6589 6590 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6591 } 6592 6593 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6594 struct sk_buff *skb) 6595 { 6596 struct hci_ev_le_pa_sync_established *ev = data; 6597 int mask = hdev->link_mode; 6598 __u8 flags = 0; 6599 struct hci_conn *pa_sync; 6600 6601 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6602 6603 hci_dev_lock(hdev); 6604 6605 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6606 6607 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6608 if (!(mask & HCI_LM_ACCEPT)) { 6609 hci_le_pa_term_sync(hdev, ev->handle); 6610 goto unlock; 6611 } 6612 6613 if (!(flags & HCI_PROTO_DEFER)) 6614 goto unlock; 6615 6616 if (ev->status) { 6617 /* Add connection to indicate the failed PA sync event */ 6618 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 6619 HCI_ROLE_SLAVE); 6620 6621 if (!pa_sync) 6622 goto unlock; 6623 6624 set_bit(HCI_CONN_PA_SYNC_FAILED, &pa_sync->flags); 6625 6626 /* Notify iso layer */ 6627 hci_connect_cfm(pa_sync, ev->status); 6628 } 6629 6630 unlock: 6631 hci_dev_unlock(hdev); 6632 } 6633 6634 static void hci_le_per_adv_report_evt(struct hci_dev *hdev, void *data, 6635 struct sk_buff *skb) 6636 { 6637 struct hci_ev_le_per_adv_report *ev = data; 6638 int mask = hdev->link_mode; 6639 __u8 flags = 0; 6640 6641 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 6642 6643 hci_dev_lock(hdev); 6644 6645 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 6646 if (!(mask & HCI_LM_ACCEPT)) 6647 hci_le_pa_term_sync(hdev, ev->sync_handle); 6648 6649 hci_dev_unlock(hdev); 6650 } 6651 6652 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6653 struct sk_buff *skb) 6654 { 6655 struct hci_ev_le_remote_feat_complete *ev = data; 6656 struct hci_conn *conn; 6657 6658 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6659 6660 hci_dev_lock(hdev); 6661 6662 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6663 if (conn) { 6664 if (!ev->status) 6665 memcpy(conn->features[0], ev->features, 8); 6666 6667 if (conn->state == BT_CONFIG) { 6668 __u8 status; 6669 6670 /* If the local controller supports peripheral-initiated 6671 * features exchange, but the remote controller does 6672 * not, then it is possible that the error code 0x1a 6673 * for unsupported remote feature gets returned. 6674 * 6675 * In this specific case, allow the connection to 6676 * transition into connected state and mark it as 6677 * successful. 6678 */ 6679 if (!conn->out && ev->status == 0x1a && 6680 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6681 status = 0x00; 6682 else 6683 status = ev->status; 6684 6685 conn->state = BT_CONNECTED; 6686 hci_connect_cfm(conn, status); 6687 hci_conn_drop(conn); 6688 } 6689 } 6690 6691 hci_dev_unlock(hdev); 6692 } 6693 6694 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6695 struct sk_buff *skb) 6696 { 6697 struct hci_ev_le_ltk_req *ev = data; 6698 struct hci_cp_le_ltk_reply cp; 6699 struct hci_cp_le_ltk_neg_reply neg; 6700 struct hci_conn *conn; 6701 struct smp_ltk *ltk; 6702 6703 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6704 6705 hci_dev_lock(hdev); 6706 6707 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6708 if (conn == NULL) 6709 goto not_found; 6710 6711 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6712 if (!ltk) 6713 goto not_found; 6714 6715 if (smp_ltk_is_sc(ltk)) { 6716 /* With SC both EDiv and Rand are set to zero */ 6717 if (ev->ediv || ev->rand) 6718 goto not_found; 6719 } else { 6720 /* For non-SC keys check that EDiv and Rand match */ 6721 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6722 goto not_found; 6723 } 6724 6725 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6726 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6727 cp.handle = cpu_to_le16(conn->handle); 6728 6729 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6730 6731 conn->enc_key_size = ltk->enc_size; 6732 6733 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6734 6735 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6736 * temporary key used to encrypt a connection following 6737 * pairing. It is used during the Encrypted Session Setup to 6738 * distribute the keys. Later, security can be re-established 6739 * using a distributed LTK. 6740 */ 6741 if (ltk->type == SMP_STK) { 6742 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6743 list_del_rcu(<k->list); 6744 kfree_rcu(ltk, rcu); 6745 } else { 6746 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6747 } 6748 6749 hci_dev_unlock(hdev); 6750 6751 return; 6752 6753 not_found: 6754 neg.handle = ev->handle; 6755 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6756 hci_dev_unlock(hdev); 6757 } 6758 6759 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6760 u8 reason) 6761 { 6762 struct hci_cp_le_conn_param_req_neg_reply cp; 6763 6764 cp.handle = cpu_to_le16(handle); 6765 cp.reason = reason; 6766 6767 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6768 &cp); 6769 } 6770 6771 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6772 struct sk_buff *skb) 6773 { 6774 struct hci_ev_le_remote_conn_param_req *ev = data; 6775 struct hci_cp_le_conn_param_req_reply cp; 6776 struct hci_conn *hcon; 6777 u16 handle, min, max, latency, timeout; 6778 6779 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6780 6781 handle = le16_to_cpu(ev->handle); 6782 min = le16_to_cpu(ev->interval_min); 6783 max = le16_to_cpu(ev->interval_max); 6784 latency = le16_to_cpu(ev->latency); 6785 timeout = le16_to_cpu(ev->timeout); 6786 6787 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6788 if (!hcon || hcon->state != BT_CONNECTED) 6789 return send_conn_param_neg_reply(hdev, handle, 6790 HCI_ERROR_UNKNOWN_CONN_ID); 6791 6792 if (hci_check_conn_params(min, max, latency, timeout)) 6793 return send_conn_param_neg_reply(hdev, handle, 6794 HCI_ERROR_INVALID_LL_PARAMS); 6795 6796 if (hcon->role == HCI_ROLE_MASTER) { 6797 struct hci_conn_params *params; 6798 u8 store_hint; 6799 6800 hci_dev_lock(hdev); 6801 6802 params = hci_conn_params_lookup(hdev, &hcon->dst, 6803 hcon->dst_type); 6804 if (params) { 6805 params->conn_min_interval = min; 6806 params->conn_max_interval = max; 6807 params->conn_latency = latency; 6808 params->supervision_timeout = timeout; 6809 store_hint = 0x01; 6810 } else { 6811 store_hint = 0x00; 6812 } 6813 6814 hci_dev_unlock(hdev); 6815 6816 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6817 store_hint, min, max, latency, timeout); 6818 } 6819 6820 cp.handle = ev->handle; 6821 cp.interval_min = ev->interval_min; 6822 cp.interval_max = ev->interval_max; 6823 cp.latency = ev->latency; 6824 cp.timeout = ev->timeout; 6825 cp.min_ce_len = 0; 6826 cp.max_ce_len = 0; 6827 6828 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6829 } 6830 6831 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6832 struct sk_buff *skb) 6833 { 6834 struct hci_ev_le_direct_adv_report *ev = data; 6835 u64 instant = jiffies; 6836 int i; 6837 6838 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6839 flex_array_size(ev, info, ev->num))) 6840 return; 6841 6842 if (!ev->num) 6843 return; 6844 6845 hci_dev_lock(hdev); 6846 6847 for (i = 0; i < ev->num; i++) { 6848 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6849 6850 process_adv_report(hdev, info->type, &info->bdaddr, 6851 info->bdaddr_type, &info->direct_addr, 6852 info->direct_addr_type, info->rssi, NULL, 0, 6853 false, false, instant); 6854 } 6855 6856 hci_dev_unlock(hdev); 6857 } 6858 6859 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6860 struct sk_buff *skb) 6861 { 6862 struct hci_ev_le_phy_update_complete *ev = data; 6863 struct hci_conn *conn; 6864 6865 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6866 6867 if (ev->status) 6868 return; 6869 6870 hci_dev_lock(hdev); 6871 6872 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6873 if (!conn) 6874 goto unlock; 6875 6876 conn->le_tx_phy = ev->tx_phy; 6877 conn->le_rx_phy = ev->rx_phy; 6878 6879 unlock: 6880 hci_dev_unlock(hdev); 6881 } 6882 6883 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6884 struct sk_buff *skb) 6885 { 6886 struct hci_evt_le_cis_established *ev = data; 6887 struct hci_conn *conn; 6888 struct bt_iso_qos *qos; 6889 bool pending = false; 6890 u16 handle = __le16_to_cpu(ev->handle); 6891 6892 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6893 6894 hci_dev_lock(hdev); 6895 6896 conn = hci_conn_hash_lookup_handle(hdev, handle); 6897 if (!conn) { 6898 bt_dev_err(hdev, 6899 "Unable to find connection with handle 0x%4.4x", 6900 handle); 6901 goto unlock; 6902 } 6903 6904 if (conn->type != ISO_LINK) { 6905 bt_dev_err(hdev, 6906 "Invalid connection link type handle 0x%4.4x", 6907 handle); 6908 goto unlock; 6909 } 6910 6911 qos = &conn->iso_qos; 6912 6913 pending = test_and_clear_bit(HCI_CONN_CREATE_CIS, &conn->flags); 6914 6915 /* Convert ISO Interval (1.25 ms slots) to SDU Interval (us) */ 6916 qos->ucast.in.interval = le16_to_cpu(ev->interval) * 1250; 6917 qos->ucast.out.interval = qos->ucast.in.interval; 6918 6919 switch (conn->role) { 6920 case HCI_ROLE_SLAVE: 6921 /* Convert Transport Latency (us) to Latency (msec) */ 6922 qos->ucast.in.latency = 6923 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6924 1000); 6925 qos->ucast.out.latency = 6926 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6927 1000); 6928 qos->ucast.in.sdu = le16_to_cpu(ev->c_mtu); 6929 qos->ucast.out.sdu = le16_to_cpu(ev->p_mtu); 6930 qos->ucast.in.phy = ev->c_phy; 6931 qos->ucast.out.phy = ev->p_phy; 6932 break; 6933 case HCI_ROLE_MASTER: 6934 /* Convert Transport Latency (us) to Latency (msec) */ 6935 qos->ucast.out.latency = 6936 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->c_latency), 6937 1000); 6938 qos->ucast.in.latency = 6939 DIV_ROUND_CLOSEST(get_unaligned_le24(ev->p_latency), 6940 1000); 6941 qos->ucast.out.sdu = le16_to_cpu(ev->c_mtu); 6942 qos->ucast.in.sdu = le16_to_cpu(ev->p_mtu); 6943 qos->ucast.out.phy = ev->c_phy; 6944 qos->ucast.in.phy = ev->p_phy; 6945 break; 6946 } 6947 6948 if (!ev->status) { 6949 conn->state = BT_CONNECTED; 6950 hci_debugfs_create_conn(conn); 6951 hci_conn_add_sysfs(conn); 6952 hci_iso_setup_path(conn); 6953 goto unlock; 6954 } 6955 6956 conn->state = BT_CLOSED; 6957 hci_connect_cfm(conn, ev->status); 6958 hci_conn_del(conn); 6959 6960 unlock: 6961 if (pending) 6962 hci_le_create_cis_pending(hdev); 6963 6964 hci_dev_unlock(hdev); 6965 } 6966 6967 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6968 { 6969 struct hci_cp_le_reject_cis cp; 6970 6971 memset(&cp, 0, sizeof(cp)); 6972 cp.handle = handle; 6973 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6974 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6975 } 6976 6977 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6978 { 6979 struct hci_cp_le_accept_cis cp; 6980 6981 memset(&cp, 0, sizeof(cp)); 6982 cp.handle = handle; 6983 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6984 } 6985 6986 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6987 struct sk_buff *skb) 6988 { 6989 struct hci_evt_le_cis_req *ev = data; 6990 u16 acl_handle, cis_handle; 6991 struct hci_conn *acl, *cis; 6992 int mask; 6993 __u8 flags = 0; 6994 6995 acl_handle = __le16_to_cpu(ev->acl_handle); 6996 cis_handle = __le16_to_cpu(ev->cis_handle); 6997 6998 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6999 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 7000 7001 hci_dev_lock(hdev); 7002 7003 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 7004 if (!acl) 7005 goto unlock; 7006 7007 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 7008 if (!(mask & HCI_LM_ACCEPT)) { 7009 hci_le_reject_cis(hdev, ev->cis_handle); 7010 goto unlock; 7011 } 7012 7013 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 7014 if (!cis) { 7015 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE, 7016 cis_handle); 7017 if (!cis) { 7018 hci_le_reject_cis(hdev, ev->cis_handle); 7019 goto unlock; 7020 } 7021 } 7022 7023 cis->iso_qos.ucast.cig = ev->cig_id; 7024 cis->iso_qos.ucast.cis = ev->cis_id; 7025 7026 if (!(flags & HCI_PROTO_DEFER)) { 7027 hci_le_accept_cis(hdev, ev->cis_handle); 7028 } else { 7029 cis->state = BT_CONNECT2; 7030 hci_connect_cfm(cis, 0); 7031 } 7032 7033 unlock: 7034 hci_dev_unlock(hdev); 7035 } 7036 7037 static int hci_iso_term_big_sync(struct hci_dev *hdev, void *data) 7038 { 7039 u8 handle = PTR_UINT(data); 7040 7041 return hci_le_terminate_big_sync(hdev, handle, 7042 HCI_ERROR_LOCAL_HOST_TERM); 7043 } 7044 7045 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 7046 struct sk_buff *skb) 7047 { 7048 struct hci_evt_le_create_big_complete *ev = data; 7049 struct hci_conn *conn; 7050 __u8 i = 0; 7051 7052 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 7053 7054 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 7055 flex_array_size(ev, bis_handle, ev->num_bis))) 7056 return; 7057 7058 hci_dev_lock(hdev); 7059 rcu_read_lock(); 7060 7061 /* Connect all BISes that are bound to the BIG */ 7062 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) { 7063 if (bacmp(&conn->dst, BDADDR_ANY) || 7064 conn->type != ISO_LINK || 7065 conn->iso_qos.bcast.big != ev->handle) 7066 continue; 7067 7068 if (hci_conn_set_handle(conn, 7069 __le16_to_cpu(ev->bis_handle[i++]))) 7070 continue; 7071 7072 if (!ev->status) { 7073 conn->state = BT_CONNECTED; 7074 set_bit(HCI_CONN_BIG_CREATED, &conn->flags); 7075 rcu_read_unlock(); 7076 hci_debugfs_create_conn(conn); 7077 hci_conn_add_sysfs(conn); 7078 hci_iso_setup_path(conn); 7079 rcu_read_lock(); 7080 continue; 7081 } 7082 7083 hci_connect_cfm(conn, ev->status); 7084 rcu_read_unlock(); 7085 hci_conn_del(conn); 7086 rcu_read_lock(); 7087 } 7088 7089 rcu_read_unlock(); 7090 7091 if (!ev->status && !i) 7092 /* If no BISes have been connected for the BIG, 7093 * terminate. This is in case all bound connections 7094 * have been closed before the BIG creation 7095 * has completed. 7096 */ 7097 hci_cmd_sync_queue(hdev, hci_iso_term_big_sync, 7098 UINT_PTR(ev->handle), NULL); 7099 7100 hci_dev_unlock(hdev); 7101 } 7102 7103 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 7104 struct sk_buff *skb) 7105 { 7106 struct hci_evt_le_big_sync_estabilished *ev = data; 7107 struct hci_conn *bis; 7108 struct hci_conn *pa_sync; 7109 int i; 7110 7111 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 7112 7113 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7114 flex_array_size(ev, bis, ev->num_bis))) 7115 return; 7116 7117 hci_dev_lock(hdev); 7118 7119 if (!ev->status) { 7120 pa_sync = hci_conn_hash_lookup_pa_sync_big_handle(hdev, ev->handle); 7121 if (pa_sync) 7122 /* Also mark the BIG sync established event on the 7123 * associated PA sync hcon 7124 */ 7125 set_bit(HCI_CONN_BIG_SYNC, &pa_sync->flags); 7126 } 7127 7128 for (i = 0; i < ev->num_bis; i++) { 7129 u16 handle = le16_to_cpu(ev->bis[i]); 7130 __le32 interval; 7131 7132 bis = hci_conn_hash_lookup_handle(hdev, handle); 7133 if (!bis) { 7134 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 7135 HCI_ROLE_SLAVE, handle); 7136 if (!bis) 7137 continue; 7138 } 7139 7140 if (ev->status != 0x42) 7141 /* Mark PA sync as established */ 7142 set_bit(HCI_CONN_PA_SYNC, &bis->flags); 7143 7144 bis->iso_qos.bcast.big = ev->handle; 7145 memset(&interval, 0, sizeof(interval)); 7146 memcpy(&interval, ev->latency, sizeof(ev->latency)); 7147 bis->iso_qos.bcast.in.interval = le32_to_cpu(interval); 7148 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 7149 bis->iso_qos.bcast.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 7150 bis->iso_qos.bcast.in.sdu = le16_to_cpu(ev->max_pdu); 7151 7152 if (!ev->status) { 7153 set_bit(HCI_CONN_BIG_SYNC, &bis->flags); 7154 hci_iso_setup_path(bis); 7155 } 7156 } 7157 7158 /* In case BIG sync failed, notify each failed connection to 7159 * the user after all hci connections have been added 7160 */ 7161 if (ev->status) 7162 for (i = 0; i < ev->num_bis; i++) { 7163 u16 handle = le16_to_cpu(ev->bis[i]); 7164 7165 bis = hci_conn_hash_lookup_handle(hdev, handle); 7166 7167 set_bit(HCI_CONN_BIG_SYNC_FAILED, &bis->flags); 7168 hci_connect_cfm(bis, ev->status); 7169 } 7170 7171 hci_dev_unlock(hdev); 7172 } 7173 7174 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7175 struct sk_buff *skb) 7176 { 7177 struct hci_evt_le_big_info_adv_report *ev = data; 7178 int mask = hdev->link_mode; 7179 __u8 flags = 0; 7180 struct hci_conn *pa_sync; 7181 7182 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7183 7184 hci_dev_lock(hdev); 7185 7186 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 7187 if (!(mask & HCI_LM_ACCEPT)) { 7188 hci_le_pa_term_sync(hdev, ev->sync_handle); 7189 goto unlock; 7190 } 7191 7192 if (!(flags & HCI_PROTO_DEFER)) 7193 goto unlock; 7194 7195 pa_sync = hci_conn_hash_lookup_pa_sync_handle 7196 (hdev, 7197 le16_to_cpu(ev->sync_handle)); 7198 7199 if (pa_sync) 7200 goto unlock; 7201 7202 /* Add connection to indicate the PA sync event */ 7203 pa_sync = hci_conn_add_unset(hdev, ISO_LINK, BDADDR_ANY, 7204 HCI_ROLE_SLAVE); 7205 7206 if (!pa_sync) 7207 goto unlock; 7208 7209 pa_sync->sync_handle = le16_to_cpu(ev->sync_handle); 7210 set_bit(HCI_CONN_PA_SYNC, &pa_sync->flags); 7211 7212 /* Notify iso layer */ 7213 hci_connect_cfm(pa_sync, 0x00); 7214 7215 unlock: 7216 hci_dev_unlock(hdev); 7217 } 7218 7219 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7220 [_op] = { \ 7221 .func = _func, \ 7222 .min_len = _min_len, \ 7223 .max_len = _max_len, \ 7224 } 7225 7226 #define HCI_LE_EV(_op, _func, _len) \ 7227 HCI_LE_EV_VL(_op, _func, _len, _len) 7228 7229 #define HCI_LE_EV_STATUS(_op, _func) \ 7230 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7231 7232 /* Entries in this table shall have their position according to the subevent 7233 * opcode they handle so the use of the macros above is recommend since it does 7234 * attempt to initialize at its proper index using Designated Initializers that 7235 * way events without a callback function can be ommited. 7236 */ 7237 static const struct hci_le_ev { 7238 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7239 u16 min_len; 7240 u16 max_len; 7241 } hci_le_ev_table[U8_MAX + 1] = { 7242 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7243 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7244 sizeof(struct hci_ev_le_conn_complete)), 7245 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7246 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7247 sizeof(struct hci_ev_le_advertising_report), 7248 HCI_MAX_EVENT_SIZE), 7249 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7250 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7251 hci_le_conn_update_complete_evt, 7252 sizeof(struct hci_ev_le_conn_update_complete)), 7253 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7254 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7255 hci_le_remote_feat_complete_evt, 7256 sizeof(struct hci_ev_le_remote_feat_complete)), 7257 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7258 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7259 sizeof(struct hci_ev_le_ltk_req)), 7260 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7261 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7262 hci_le_remote_conn_param_req_evt, 7263 sizeof(struct hci_ev_le_remote_conn_param_req)), 7264 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7265 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7266 hci_le_enh_conn_complete_evt, 7267 sizeof(struct hci_ev_le_enh_conn_complete)), 7268 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7269 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7270 sizeof(struct hci_ev_le_direct_adv_report), 7271 HCI_MAX_EVENT_SIZE), 7272 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7273 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7274 sizeof(struct hci_ev_le_phy_update_complete)), 7275 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7276 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7277 sizeof(struct hci_ev_le_ext_adv_report), 7278 HCI_MAX_EVENT_SIZE), 7279 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7280 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7281 hci_le_pa_sync_estabilished_evt, 7282 sizeof(struct hci_ev_le_pa_sync_established)), 7283 /* [0x0f = HCI_EV_LE_PER_ADV_REPORT] */ 7284 HCI_LE_EV_VL(HCI_EV_LE_PER_ADV_REPORT, 7285 hci_le_per_adv_report_evt, 7286 sizeof(struct hci_ev_le_per_adv_report), 7287 HCI_MAX_EVENT_SIZE), 7288 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7289 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7290 sizeof(struct hci_evt_le_ext_adv_set_term)), 7291 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7292 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7293 sizeof(struct hci_evt_le_cis_established)), 7294 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7295 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7296 sizeof(struct hci_evt_le_cis_req)), 7297 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7298 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7299 hci_le_create_big_complete_evt, 7300 sizeof(struct hci_evt_le_create_big_complete), 7301 HCI_MAX_EVENT_SIZE), 7302 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7303 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7304 hci_le_big_sync_established_evt, 7305 sizeof(struct hci_evt_le_big_sync_estabilished), 7306 HCI_MAX_EVENT_SIZE), 7307 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7308 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7309 hci_le_big_info_adv_report_evt, 7310 sizeof(struct hci_evt_le_big_info_adv_report), 7311 HCI_MAX_EVENT_SIZE), 7312 }; 7313 7314 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7315 struct sk_buff *skb, u16 *opcode, u8 *status, 7316 hci_req_complete_t *req_complete, 7317 hci_req_complete_skb_t *req_complete_skb) 7318 { 7319 struct hci_ev_le_meta *ev = data; 7320 const struct hci_le_ev *subev; 7321 7322 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7323 7324 /* Only match event if command OGF is for LE */ 7325 if (hdev->sent_cmd && 7326 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 && 7327 hci_skb_event(hdev->sent_cmd) == ev->subevent) { 7328 *opcode = hci_skb_opcode(hdev->sent_cmd); 7329 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7330 req_complete_skb); 7331 } 7332 7333 subev = &hci_le_ev_table[ev->subevent]; 7334 if (!subev->func) 7335 return; 7336 7337 if (skb->len < subev->min_len) { 7338 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7339 ev->subevent, skb->len, subev->min_len); 7340 return; 7341 } 7342 7343 /* Just warn if the length is over max_len size it still be 7344 * possible to partially parse the event so leave to callback to 7345 * decide if that is acceptable. 7346 */ 7347 if (skb->len > subev->max_len) 7348 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7349 ev->subevent, skb->len, subev->max_len); 7350 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7351 if (!data) 7352 return; 7353 7354 subev->func(hdev, data, skb); 7355 } 7356 7357 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7358 u8 event, struct sk_buff *skb) 7359 { 7360 struct hci_ev_cmd_complete *ev; 7361 struct hci_event_hdr *hdr; 7362 7363 if (!skb) 7364 return false; 7365 7366 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7367 if (!hdr) 7368 return false; 7369 7370 if (event) { 7371 if (hdr->evt != event) 7372 return false; 7373 return true; 7374 } 7375 7376 /* Check if request ended in Command Status - no way to retrieve 7377 * any extra parameters in this case. 7378 */ 7379 if (hdr->evt == HCI_EV_CMD_STATUS) 7380 return false; 7381 7382 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7383 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7384 hdr->evt); 7385 return false; 7386 } 7387 7388 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7389 if (!ev) 7390 return false; 7391 7392 if (opcode != __le16_to_cpu(ev->opcode)) { 7393 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7394 __le16_to_cpu(ev->opcode)); 7395 return false; 7396 } 7397 7398 return true; 7399 } 7400 7401 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7402 struct sk_buff *skb) 7403 { 7404 struct hci_ev_le_advertising_info *adv; 7405 struct hci_ev_le_direct_adv_info *direct_adv; 7406 struct hci_ev_le_ext_adv_info *ext_adv; 7407 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7408 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7409 7410 hci_dev_lock(hdev); 7411 7412 /* If we are currently suspended and this is the first BT event seen, 7413 * save the wake reason associated with the event. 7414 */ 7415 if (!hdev->suspended || hdev->wake_reason) 7416 goto unlock; 7417 7418 /* Default to remote wake. Values for wake_reason are documented in the 7419 * Bluez mgmt api docs. 7420 */ 7421 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7422 7423 /* Once configured for remote wakeup, we should only wake up for 7424 * reconnections. It's useful to see which device is waking us up so 7425 * keep track of the bdaddr of the connection event that woke us up. 7426 */ 7427 if (event == HCI_EV_CONN_REQUEST) { 7428 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7429 hdev->wake_addr_type = BDADDR_BREDR; 7430 } else if (event == HCI_EV_CONN_COMPLETE) { 7431 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7432 hdev->wake_addr_type = BDADDR_BREDR; 7433 } else if (event == HCI_EV_LE_META) { 7434 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7435 u8 subevent = le_ev->subevent; 7436 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7437 u8 num_reports = *ptr; 7438 7439 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7440 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7441 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7442 num_reports) { 7443 adv = (void *)(ptr + 1); 7444 direct_adv = (void *)(ptr + 1); 7445 ext_adv = (void *)(ptr + 1); 7446 7447 switch (subevent) { 7448 case HCI_EV_LE_ADVERTISING_REPORT: 7449 bacpy(&hdev->wake_addr, &adv->bdaddr); 7450 hdev->wake_addr_type = adv->bdaddr_type; 7451 break; 7452 case HCI_EV_LE_DIRECT_ADV_REPORT: 7453 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7454 hdev->wake_addr_type = direct_adv->bdaddr_type; 7455 break; 7456 case HCI_EV_LE_EXT_ADV_REPORT: 7457 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7458 hdev->wake_addr_type = ext_adv->bdaddr_type; 7459 break; 7460 } 7461 } 7462 } else { 7463 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7464 } 7465 7466 unlock: 7467 hci_dev_unlock(hdev); 7468 } 7469 7470 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7471 [_op] = { \ 7472 .req = false, \ 7473 .func = _func, \ 7474 .min_len = _min_len, \ 7475 .max_len = _max_len, \ 7476 } 7477 7478 #define HCI_EV(_op, _func, _len) \ 7479 HCI_EV_VL(_op, _func, _len, _len) 7480 7481 #define HCI_EV_STATUS(_op, _func) \ 7482 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7483 7484 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7485 [_op] = { \ 7486 .req = true, \ 7487 .func_req = _func, \ 7488 .min_len = _min_len, \ 7489 .max_len = _max_len, \ 7490 } 7491 7492 #define HCI_EV_REQ(_op, _func, _len) \ 7493 HCI_EV_REQ_VL(_op, _func, _len, _len) 7494 7495 /* Entries in this table shall have their position according to the event opcode 7496 * they handle so the use of the macros above is recommend since it does attempt 7497 * to initialize at its proper index using Designated Initializers that way 7498 * events without a callback function don't have entered. 7499 */ 7500 static const struct hci_ev { 7501 bool req; 7502 union { 7503 void (*func)(struct hci_dev *hdev, void *data, 7504 struct sk_buff *skb); 7505 void (*func_req)(struct hci_dev *hdev, void *data, 7506 struct sk_buff *skb, u16 *opcode, u8 *status, 7507 hci_req_complete_t *req_complete, 7508 hci_req_complete_skb_t *req_complete_skb); 7509 }; 7510 u16 min_len; 7511 u16 max_len; 7512 } hci_ev_table[U8_MAX + 1] = { 7513 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7514 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7515 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7516 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7517 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7518 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7519 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7520 sizeof(struct hci_ev_conn_complete)), 7521 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7522 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7523 sizeof(struct hci_ev_conn_request)), 7524 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7525 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7526 sizeof(struct hci_ev_disconn_complete)), 7527 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7528 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7529 sizeof(struct hci_ev_auth_complete)), 7530 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7531 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7532 sizeof(struct hci_ev_remote_name)), 7533 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7534 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7535 sizeof(struct hci_ev_encrypt_change)), 7536 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7537 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7538 hci_change_link_key_complete_evt, 7539 sizeof(struct hci_ev_change_link_key_complete)), 7540 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7541 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7542 sizeof(struct hci_ev_remote_features)), 7543 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7544 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7545 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7546 /* [0x0f = HCI_EV_CMD_STATUS] */ 7547 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7548 sizeof(struct hci_ev_cmd_status)), 7549 /* [0x10 = HCI_EV_CMD_STATUS] */ 7550 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7551 sizeof(struct hci_ev_hardware_error)), 7552 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7553 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7554 sizeof(struct hci_ev_role_change)), 7555 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7556 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7557 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7558 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7559 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7560 sizeof(struct hci_ev_mode_change)), 7561 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7562 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7563 sizeof(struct hci_ev_pin_code_req)), 7564 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7565 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7566 sizeof(struct hci_ev_link_key_req)), 7567 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7568 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7569 sizeof(struct hci_ev_link_key_notify)), 7570 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7571 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7572 sizeof(struct hci_ev_clock_offset)), 7573 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7574 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7575 sizeof(struct hci_ev_pkt_type_change)), 7576 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7577 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7578 sizeof(struct hci_ev_pscan_rep_mode)), 7579 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7580 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7581 hci_inquiry_result_with_rssi_evt, 7582 sizeof(struct hci_ev_inquiry_result_rssi), 7583 HCI_MAX_EVENT_SIZE), 7584 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7585 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7586 sizeof(struct hci_ev_remote_ext_features)), 7587 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7588 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7589 sizeof(struct hci_ev_sync_conn_complete)), 7590 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7591 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7592 hci_extended_inquiry_result_evt, 7593 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7594 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7595 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7596 sizeof(struct hci_ev_key_refresh_complete)), 7597 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7598 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7599 sizeof(struct hci_ev_io_capa_request)), 7600 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7601 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7602 sizeof(struct hci_ev_io_capa_reply)), 7603 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7604 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7605 sizeof(struct hci_ev_user_confirm_req)), 7606 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7607 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7608 sizeof(struct hci_ev_user_passkey_req)), 7609 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7610 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7611 sizeof(struct hci_ev_remote_oob_data_request)), 7612 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7613 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7614 sizeof(struct hci_ev_simple_pair_complete)), 7615 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7616 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7617 sizeof(struct hci_ev_user_passkey_notify)), 7618 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7619 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7620 sizeof(struct hci_ev_keypress_notify)), 7621 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7622 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7623 sizeof(struct hci_ev_remote_host_features)), 7624 /* [0x3e = HCI_EV_LE_META] */ 7625 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7626 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7627 #if IS_ENABLED(CONFIG_BT_HS) 7628 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */ 7629 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt, 7630 sizeof(struct hci_ev_phy_link_complete)), 7631 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */ 7632 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt, 7633 sizeof(struct hci_ev_channel_selected)), 7634 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */ 7635 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE, 7636 hci_disconn_loglink_complete_evt, 7637 sizeof(struct hci_ev_disconn_logical_link_complete)), 7638 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */ 7639 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt, 7640 sizeof(struct hci_ev_logical_link_complete)), 7641 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */ 7642 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE, 7643 hci_disconn_phylink_complete_evt, 7644 sizeof(struct hci_ev_disconn_phy_link_complete)), 7645 #endif 7646 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */ 7647 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt, 7648 sizeof(struct hci_ev_num_comp_blocks)), 7649 /* [0xff = HCI_EV_VENDOR] */ 7650 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7651 }; 7652 7653 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7654 u16 *opcode, u8 *status, 7655 hci_req_complete_t *req_complete, 7656 hci_req_complete_skb_t *req_complete_skb) 7657 { 7658 const struct hci_ev *ev = &hci_ev_table[event]; 7659 void *data; 7660 7661 if (!ev->func) 7662 return; 7663 7664 if (skb->len < ev->min_len) { 7665 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7666 event, skb->len, ev->min_len); 7667 return; 7668 } 7669 7670 /* Just warn if the length is over max_len size it still be 7671 * possible to partially parse the event so leave to callback to 7672 * decide if that is acceptable. 7673 */ 7674 if (skb->len > ev->max_len) 7675 bt_dev_warn_ratelimited(hdev, 7676 "unexpected event 0x%2.2x length: %u > %u", 7677 event, skb->len, ev->max_len); 7678 7679 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7680 if (!data) 7681 return; 7682 7683 if (ev->req) 7684 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7685 req_complete_skb); 7686 else 7687 ev->func(hdev, data, skb); 7688 } 7689 7690 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7691 { 7692 struct hci_event_hdr *hdr = (void *) skb->data; 7693 hci_req_complete_t req_complete = NULL; 7694 hci_req_complete_skb_t req_complete_skb = NULL; 7695 struct sk_buff *orig_skb = NULL; 7696 u8 status = 0, event, req_evt = 0; 7697 u16 opcode = HCI_OP_NOP; 7698 7699 if (skb->len < sizeof(*hdr)) { 7700 bt_dev_err(hdev, "Malformed HCI Event"); 7701 goto done; 7702 } 7703 7704 kfree_skb(hdev->recv_event); 7705 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7706 7707 event = hdr->evt; 7708 if (!event) { 7709 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7710 event); 7711 goto done; 7712 } 7713 7714 /* Only match event if command OGF is not for LE */ 7715 if (hdev->sent_cmd && 7716 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 && 7717 hci_skb_event(hdev->sent_cmd) == event) { 7718 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd), 7719 status, &req_complete, &req_complete_skb); 7720 req_evt = event; 7721 } 7722 7723 /* If it looks like we might end up having to call 7724 * req_complete_skb, store a pristine copy of the skb since the 7725 * various handlers may modify the original one through 7726 * skb_pull() calls, etc. 7727 */ 7728 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7729 event == HCI_EV_CMD_COMPLETE) 7730 orig_skb = skb_clone(skb, GFP_KERNEL); 7731 7732 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7733 7734 /* Store wake reason if we're suspended */ 7735 hci_store_wake_reason(hdev, event, skb); 7736 7737 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7738 7739 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7740 &req_complete_skb); 7741 7742 if (req_complete) { 7743 req_complete(hdev, status, opcode); 7744 } else if (req_complete_skb) { 7745 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7746 kfree_skb(orig_skb); 7747 orig_skb = NULL; 7748 } 7749 req_complete_skb(hdev, status, opcode, orig_skb); 7750 } 7751 7752 done: 7753 kfree_skb(orig_skb); 7754 kfree_skb(skb); 7755 hdev->stat.evt_rx++; 7756 } 7757