1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License version 2 as 9 published by the Free Software Foundation; 10 11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 22 SOFTWARE IS DISCLAIMED. 23 */ 24 25 /* Bluetooth HCI event handling. */ 26 27 #include <asm/unaligned.h> 28 29 #include <net/bluetooth/bluetooth.h> 30 #include <net/bluetooth/hci_core.h> 31 #include <net/bluetooth/mgmt.h> 32 33 #include "hci_request.h" 34 #include "hci_debugfs.h" 35 #include "a2mp.h" 36 #include "amp.h" 37 #include "smp.h" 38 #include "msft.h" 39 #include "eir.h" 40 41 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ 42 "\x00\x00\x00\x00\x00\x00\x00\x00" 43 44 #define secs_to_jiffies(_secs) msecs_to_jiffies((_secs) * 1000) 45 46 /* Handle HCI Event packets */ 47 48 static void *hci_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 49 u8 ev, size_t len) 50 { 51 void *data; 52 53 data = skb_pull_data(skb, len); 54 if (!data) 55 bt_dev_err(hdev, "Malformed Event: 0x%2.2x", ev); 56 57 return data; 58 } 59 60 static void *hci_cc_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 61 u16 op, size_t len) 62 { 63 void *data; 64 65 data = skb_pull_data(skb, len); 66 if (!data) 67 bt_dev_err(hdev, "Malformed Command Complete: 0x%4.4x", op); 68 69 return data; 70 } 71 72 static void *hci_le_ev_skb_pull(struct hci_dev *hdev, struct sk_buff *skb, 73 u8 ev, size_t len) 74 { 75 void *data; 76 77 data = skb_pull_data(skb, len); 78 if (!data) 79 bt_dev_err(hdev, "Malformed LE Event: 0x%2.2x", ev); 80 81 return data; 82 } 83 84 static u8 hci_cc_inquiry_cancel(struct hci_dev *hdev, void *data, 85 struct sk_buff *skb) 86 { 87 struct hci_ev_status *rp = data; 88 89 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 90 91 /* It is possible that we receive Inquiry Complete event right 92 * before we receive Inquiry Cancel Command Complete event, in 93 * which case the latter event should have status of Command 94 * Disallowed (0x0c). This should not be treated as error, since 95 * we actually achieve what Inquiry Cancel wants to achieve, 96 * which is to end the last Inquiry session. 97 */ 98 if (rp->status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) { 99 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command"); 100 rp->status = 0x00; 101 } 102 103 if (rp->status) 104 return rp->status; 105 106 clear_bit(HCI_INQUIRY, &hdev->flags); 107 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 108 wake_up_bit(&hdev->flags, HCI_INQUIRY); 109 110 hci_dev_lock(hdev); 111 /* Set discovery state to stopped if we're not doing LE active 112 * scanning. 113 */ 114 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 115 hdev->le_scan_type != LE_SCAN_ACTIVE) 116 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 117 hci_dev_unlock(hdev); 118 119 hci_conn_check_pending(hdev); 120 121 return rp->status; 122 } 123 124 static u8 hci_cc_periodic_inq(struct hci_dev *hdev, void *data, 125 struct sk_buff *skb) 126 { 127 struct hci_ev_status *rp = data; 128 129 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 130 131 if (rp->status) 132 return rp->status; 133 134 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ); 135 136 return rp->status; 137 } 138 139 static u8 hci_cc_exit_periodic_inq(struct hci_dev *hdev, void *data, 140 struct sk_buff *skb) 141 { 142 struct hci_ev_status *rp = data; 143 144 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 145 146 if (rp->status) 147 return rp->status; 148 149 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); 150 151 hci_conn_check_pending(hdev); 152 153 return rp->status; 154 } 155 156 static u8 hci_cc_remote_name_req_cancel(struct hci_dev *hdev, void *data, 157 struct sk_buff *skb) 158 { 159 struct hci_ev_status *rp = data; 160 161 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 162 163 return rp->status; 164 } 165 166 static u8 hci_cc_role_discovery(struct hci_dev *hdev, void *data, 167 struct sk_buff *skb) 168 { 169 struct hci_rp_role_discovery *rp = data; 170 struct hci_conn *conn; 171 172 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 173 174 if (rp->status) 175 return rp->status; 176 177 hci_dev_lock(hdev); 178 179 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 180 if (conn) 181 conn->role = rp->role; 182 183 hci_dev_unlock(hdev); 184 185 return rp->status; 186 } 187 188 static u8 hci_cc_read_link_policy(struct hci_dev *hdev, void *data, 189 struct sk_buff *skb) 190 { 191 struct hci_rp_read_link_policy *rp = data; 192 struct hci_conn *conn; 193 194 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 195 196 if (rp->status) 197 return rp->status; 198 199 hci_dev_lock(hdev); 200 201 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 202 if (conn) 203 conn->link_policy = __le16_to_cpu(rp->policy); 204 205 hci_dev_unlock(hdev); 206 207 return rp->status; 208 } 209 210 static u8 hci_cc_write_link_policy(struct hci_dev *hdev, void *data, 211 struct sk_buff *skb) 212 { 213 struct hci_rp_write_link_policy *rp = data; 214 struct hci_conn *conn; 215 void *sent; 216 217 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 218 219 if (rp->status) 220 return rp->status; 221 222 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY); 223 if (!sent) 224 return rp->status; 225 226 hci_dev_lock(hdev); 227 228 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 229 if (conn) 230 conn->link_policy = get_unaligned_le16(sent + 2); 231 232 hci_dev_unlock(hdev); 233 234 return rp->status; 235 } 236 237 static u8 hci_cc_read_def_link_policy(struct hci_dev *hdev, void *data, 238 struct sk_buff *skb) 239 { 240 struct hci_rp_read_def_link_policy *rp = data; 241 242 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 243 244 if (rp->status) 245 return rp->status; 246 247 hdev->link_policy = __le16_to_cpu(rp->policy); 248 249 return rp->status; 250 } 251 252 static u8 hci_cc_write_def_link_policy(struct hci_dev *hdev, void *data, 253 struct sk_buff *skb) 254 { 255 struct hci_ev_status *rp = data; 256 void *sent; 257 258 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 259 260 if (rp->status) 261 return rp->status; 262 263 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY); 264 if (!sent) 265 return rp->status; 266 267 hdev->link_policy = get_unaligned_le16(sent); 268 269 return rp->status; 270 } 271 272 static u8 hci_cc_reset(struct hci_dev *hdev, void *data, struct sk_buff *skb) 273 { 274 struct hci_ev_status *rp = data; 275 276 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 277 278 clear_bit(HCI_RESET, &hdev->flags); 279 280 if (rp->status) 281 return rp->status; 282 283 /* Reset all non-persistent flags */ 284 hci_dev_clear_volatile_flags(hdev); 285 286 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 287 288 hdev->inq_tx_power = HCI_TX_POWER_INVALID; 289 hdev->adv_tx_power = HCI_TX_POWER_INVALID; 290 291 memset(hdev->adv_data, 0, sizeof(hdev->adv_data)); 292 hdev->adv_data_len = 0; 293 294 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data)); 295 hdev->scan_rsp_data_len = 0; 296 297 hdev->le_scan_type = LE_SCAN_PASSIVE; 298 299 hdev->ssp_debug_mode = 0; 300 301 hci_bdaddr_list_clear(&hdev->le_accept_list); 302 hci_bdaddr_list_clear(&hdev->le_resolv_list); 303 304 return rp->status; 305 } 306 307 static u8 hci_cc_read_stored_link_key(struct hci_dev *hdev, void *data, 308 struct sk_buff *skb) 309 { 310 struct hci_rp_read_stored_link_key *rp = data; 311 struct hci_cp_read_stored_link_key *sent; 312 313 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 314 315 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY); 316 if (!sent) 317 return rp->status; 318 319 if (!rp->status && sent->read_all == 0x01) { 320 hdev->stored_max_keys = le16_to_cpu(rp->max_keys); 321 hdev->stored_num_keys = le16_to_cpu(rp->num_keys); 322 } 323 324 return rp->status; 325 } 326 327 static u8 hci_cc_delete_stored_link_key(struct hci_dev *hdev, void *data, 328 struct sk_buff *skb) 329 { 330 struct hci_rp_delete_stored_link_key *rp = data; 331 u16 num_keys; 332 333 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 334 335 if (rp->status) 336 return rp->status; 337 338 num_keys = le16_to_cpu(rp->num_keys); 339 340 if (num_keys <= hdev->stored_num_keys) 341 hdev->stored_num_keys -= num_keys; 342 else 343 hdev->stored_num_keys = 0; 344 345 return rp->status; 346 } 347 348 static u8 hci_cc_write_local_name(struct hci_dev *hdev, void *data, 349 struct sk_buff *skb) 350 { 351 struct hci_ev_status *rp = data; 352 void *sent; 353 354 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 355 356 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME); 357 if (!sent) 358 return rp->status; 359 360 hci_dev_lock(hdev); 361 362 if (hci_dev_test_flag(hdev, HCI_MGMT)) 363 mgmt_set_local_name_complete(hdev, sent, rp->status); 364 else if (!rp->status) 365 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); 366 367 hci_dev_unlock(hdev); 368 369 return rp->status; 370 } 371 372 static u8 hci_cc_read_local_name(struct hci_dev *hdev, void *data, 373 struct sk_buff *skb) 374 { 375 struct hci_rp_read_local_name *rp = data; 376 377 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 378 379 if (rp->status) 380 return rp->status; 381 382 if (hci_dev_test_flag(hdev, HCI_SETUP) || 383 hci_dev_test_flag(hdev, HCI_CONFIG)) 384 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH); 385 386 return rp->status; 387 } 388 389 static u8 hci_cc_write_auth_enable(struct hci_dev *hdev, void *data, 390 struct sk_buff *skb) 391 { 392 struct hci_ev_status *rp = data; 393 void *sent; 394 395 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 396 397 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE); 398 if (!sent) 399 return rp->status; 400 401 hci_dev_lock(hdev); 402 403 if (!rp->status) { 404 __u8 param = *((__u8 *) sent); 405 406 if (param == AUTH_ENABLED) 407 set_bit(HCI_AUTH, &hdev->flags); 408 else 409 clear_bit(HCI_AUTH, &hdev->flags); 410 } 411 412 if (hci_dev_test_flag(hdev, HCI_MGMT)) 413 mgmt_auth_enable_complete(hdev, rp->status); 414 415 hci_dev_unlock(hdev); 416 417 return rp->status; 418 } 419 420 static u8 hci_cc_write_encrypt_mode(struct hci_dev *hdev, void *data, 421 struct sk_buff *skb) 422 { 423 struct hci_ev_status *rp = data; 424 __u8 param; 425 void *sent; 426 427 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 428 429 if (rp->status) 430 return rp->status; 431 432 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE); 433 if (!sent) 434 return rp->status; 435 436 param = *((__u8 *) sent); 437 438 if (param) 439 set_bit(HCI_ENCRYPT, &hdev->flags); 440 else 441 clear_bit(HCI_ENCRYPT, &hdev->flags); 442 443 return rp->status; 444 } 445 446 static u8 hci_cc_write_scan_enable(struct hci_dev *hdev, void *data, 447 struct sk_buff *skb) 448 { 449 struct hci_ev_status *rp = data; 450 __u8 param; 451 void *sent; 452 453 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 454 455 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE); 456 if (!sent) 457 return rp->status; 458 459 param = *((__u8 *) sent); 460 461 hci_dev_lock(hdev); 462 463 if (rp->status) { 464 hdev->discov_timeout = 0; 465 goto done; 466 } 467 468 if (param & SCAN_INQUIRY) 469 set_bit(HCI_ISCAN, &hdev->flags); 470 else 471 clear_bit(HCI_ISCAN, &hdev->flags); 472 473 if (param & SCAN_PAGE) 474 set_bit(HCI_PSCAN, &hdev->flags); 475 else 476 clear_bit(HCI_PSCAN, &hdev->flags); 477 478 done: 479 hci_dev_unlock(hdev); 480 481 return rp->status; 482 } 483 484 static u8 hci_cc_set_event_filter(struct hci_dev *hdev, void *data, 485 struct sk_buff *skb) 486 { 487 struct hci_ev_status *rp = data; 488 struct hci_cp_set_event_filter *cp; 489 void *sent; 490 491 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 492 493 if (rp->status) 494 return rp->status; 495 496 sent = hci_sent_cmd_data(hdev, HCI_OP_SET_EVENT_FLT); 497 if (!sent) 498 return rp->status; 499 500 cp = (struct hci_cp_set_event_filter *)sent; 501 502 if (cp->flt_type == HCI_FLT_CLEAR_ALL) 503 hci_dev_clear_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 504 else 505 hci_dev_set_flag(hdev, HCI_EVENT_FILTER_CONFIGURED); 506 507 return rp->status; 508 } 509 510 static u8 hci_cc_read_class_of_dev(struct hci_dev *hdev, void *data, 511 struct sk_buff *skb) 512 { 513 struct hci_rp_read_class_of_dev *rp = data; 514 515 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 516 517 if (rp->status) 518 return rp->status; 519 520 memcpy(hdev->dev_class, rp->dev_class, 3); 521 522 bt_dev_dbg(hdev, "class 0x%.2x%.2x%.2x", hdev->dev_class[2], 523 hdev->dev_class[1], hdev->dev_class[0]); 524 525 return rp->status; 526 } 527 528 static u8 hci_cc_write_class_of_dev(struct hci_dev *hdev, void *data, 529 struct sk_buff *skb) 530 { 531 struct hci_ev_status *rp = data; 532 void *sent; 533 534 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 535 536 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV); 537 if (!sent) 538 return rp->status; 539 540 hci_dev_lock(hdev); 541 542 if (!rp->status) 543 memcpy(hdev->dev_class, sent, 3); 544 545 if (hci_dev_test_flag(hdev, HCI_MGMT)) 546 mgmt_set_class_of_dev_complete(hdev, sent, rp->status); 547 548 hci_dev_unlock(hdev); 549 550 return rp->status; 551 } 552 553 static u8 hci_cc_read_voice_setting(struct hci_dev *hdev, void *data, 554 struct sk_buff *skb) 555 { 556 struct hci_rp_read_voice_setting *rp = data; 557 __u16 setting; 558 559 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 560 561 if (rp->status) 562 return rp->status; 563 564 setting = __le16_to_cpu(rp->voice_setting); 565 566 if (hdev->voice_setting == setting) 567 return rp->status; 568 569 hdev->voice_setting = setting; 570 571 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 572 573 if (hdev->notify) 574 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 575 576 return rp->status; 577 } 578 579 static u8 hci_cc_write_voice_setting(struct hci_dev *hdev, void *data, 580 struct sk_buff *skb) 581 { 582 struct hci_ev_status *rp = data; 583 __u16 setting; 584 void *sent; 585 586 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 587 588 if (rp->status) 589 return rp->status; 590 591 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING); 592 if (!sent) 593 return rp->status; 594 595 setting = get_unaligned_le16(sent); 596 597 if (hdev->voice_setting == setting) 598 return rp->status; 599 600 hdev->voice_setting = setting; 601 602 bt_dev_dbg(hdev, "voice setting 0x%4.4x", setting); 603 604 if (hdev->notify) 605 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 606 607 return rp->status; 608 } 609 610 static u8 hci_cc_read_num_supported_iac(struct hci_dev *hdev, void *data, 611 struct sk_buff *skb) 612 { 613 struct hci_rp_read_num_supported_iac *rp = data; 614 615 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 616 617 if (rp->status) 618 return rp->status; 619 620 hdev->num_iac = rp->num_iac; 621 622 bt_dev_dbg(hdev, "num iac %d", hdev->num_iac); 623 624 return rp->status; 625 } 626 627 static u8 hci_cc_write_ssp_mode(struct hci_dev *hdev, void *data, 628 struct sk_buff *skb) 629 { 630 struct hci_ev_status *rp = data; 631 struct hci_cp_write_ssp_mode *sent; 632 633 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 634 635 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE); 636 if (!sent) 637 return rp->status; 638 639 hci_dev_lock(hdev); 640 641 if (!rp->status) { 642 if (sent->mode) 643 hdev->features[1][0] |= LMP_HOST_SSP; 644 else 645 hdev->features[1][0] &= ~LMP_HOST_SSP; 646 } 647 648 if (!rp->status) { 649 if (sent->mode) 650 hci_dev_set_flag(hdev, HCI_SSP_ENABLED); 651 else 652 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); 653 } 654 655 hci_dev_unlock(hdev); 656 657 return rp->status; 658 } 659 660 static u8 hci_cc_write_sc_support(struct hci_dev *hdev, void *data, 661 struct sk_buff *skb) 662 { 663 struct hci_ev_status *rp = data; 664 struct hci_cp_write_sc_support *sent; 665 666 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 667 668 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT); 669 if (!sent) 670 return rp->status; 671 672 hci_dev_lock(hdev); 673 674 if (!rp->status) { 675 if (sent->support) 676 hdev->features[1][0] |= LMP_HOST_SC; 677 else 678 hdev->features[1][0] &= ~LMP_HOST_SC; 679 } 680 681 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !rp->status) { 682 if (sent->support) 683 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 684 else 685 hci_dev_clear_flag(hdev, HCI_SC_ENABLED); 686 } 687 688 hci_dev_unlock(hdev); 689 690 return rp->status; 691 } 692 693 static u8 hci_cc_read_local_version(struct hci_dev *hdev, void *data, 694 struct sk_buff *skb) 695 { 696 struct hci_rp_read_local_version *rp = data; 697 698 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 699 700 if (rp->status) 701 return rp->status; 702 703 if (hci_dev_test_flag(hdev, HCI_SETUP) || 704 hci_dev_test_flag(hdev, HCI_CONFIG)) { 705 hdev->hci_ver = rp->hci_ver; 706 hdev->hci_rev = __le16_to_cpu(rp->hci_rev); 707 hdev->lmp_ver = rp->lmp_ver; 708 hdev->manufacturer = __le16_to_cpu(rp->manufacturer); 709 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver); 710 } 711 712 return rp->status; 713 } 714 715 static u8 hci_cc_read_enc_key_size(struct hci_dev *hdev, void *data, 716 struct sk_buff *skb) 717 { 718 struct hci_rp_read_enc_key_size *rp = data; 719 struct hci_conn *conn; 720 u16 handle; 721 u8 status = rp->status; 722 723 bt_dev_dbg(hdev, "status 0x%2.2x", status); 724 725 handle = le16_to_cpu(rp->handle); 726 727 hci_dev_lock(hdev); 728 729 conn = hci_conn_hash_lookup_handle(hdev, handle); 730 if (!conn) { 731 status = 0xFF; 732 goto done; 733 } 734 735 /* While unexpected, the read_enc_key_size command may fail. The most 736 * secure approach is to then assume the key size is 0 to force a 737 * disconnection. 738 */ 739 if (status) { 740 bt_dev_err(hdev, "failed to read key size for handle %u", 741 handle); 742 conn->enc_key_size = 0; 743 } else { 744 conn->enc_key_size = rp->key_size; 745 status = 0; 746 } 747 748 hci_encrypt_cfm(conn, 0); 749 750 done: 751 hci_dev_unlock(hdev); 752 753 return status; 754 } 755 756 static u8 hci_cc_read_local_commands(struct hci_dev *hdev, void *data, 757 struct sk_buff *skb) 758 { 759 struct hci_rp_read_local_commands *rp = data; 760 761 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 762 763 if (rp->status) 764 return rp->status; 765 766 if (hci_dev_test_flag(hdev, HCI_SETUP) || 767 hci_dev_test_flag(hdev, HCI_CONFIG)) 768 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); 769 770 return rp->status; 771 } 772 773 static u8 hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, void *data, 774 struct sk_buff *skb) 775 { 776 struct hci_rp_read_auth_payload_to *rp = data; 777 struct hci_conn *conn; 778 779 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 780 781 if (rp->status) 782 return rp->status; 783 784 hci_dev_lock(hdev); 785 786 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 787 if (conn) 788 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); 789 790 hci_dev_unlock(hdev); 791 792 return rp->status; 793 } 794 795 static u8 hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, void *data, 796 struct sk_buff *skb) 797 { 798 struct hci_rp_write_auth_payload_to *rp = data; 799 struct hci_conn *conn; 800 void *sent; 801 802 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 803 804 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); 805 if (!sent) 806 return rp->status; 807 808 hci_dev_lock(hdev); 809 810 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 811 if (!conn) { 812 rp->status = 0xff; 813 goto unlock; 814 } 815 816 if (!rp->status) 817 conn->auth_payload_timeout = get_unaligned_le16(sent + 2); 818 819 hci_encrypt_cfm(conn, 0); 820 821 unlock: 822 hci_dev_unlock(hdev); 823 824 return rp->status; 825 } 826 827 static u8 hci_cc_read_local_features(struct hci_dev *hdev, void *data, 828 struct sk_buff *skb) 829 { 830 struct hci_rp_read_local_features *rp = data; 831 832 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 833 834 if (rp->status) 835 return rp->status; 836 837 memcpy(hdev->features, rp->features, 8); 838 839 /* Adjust default settings according to features 840 * supported by device. */ 841 842 if (hdev->features[0][0] & LMP_3SLOT) 843 hdev->pkt_type |= (HCI_DM3 | HCI_DH3); 844 845 if (hdev->features[0][0] & LMP_5SLOT) 846 hdev->pkt_type |= (HCI_DM5 | HCI_DH5); 847 848 if (hdev->features[0][1] & LMP_HV2) { 849 hdev->pkt_type |= (HCI_HV2); 850 hdev->esco_type |= (ESCO_HV2); 851 } 852 853 if (hdev->features[0][1] & LMP_HV3) { 854 hdev->pkt_type |= (HCI_HV3); 855 hdev->esco_type |= (ESCO_HV3); 856 } 857 858 if (lmp_esco_capable(hdev)) 859 hdev->esco_type |= (ESCO_EV3); 860 861 if (hdev->features[0][4] & LMP_EV4) 862 hdev->esco_type |= (ESCO_EV4); 863 864 if (hdev->features[0][4] & LMP_EV5) 865 hdev->esco_type |= (ESCO_EV5); 866 867 if (hdev->features[0][5] & LMP_EDR_ESCO_2M) 868 hdev->esco_type |= (ESCO_2EV3); 869 870 if (hdev->features[0][5] & LMP_EDR_ESCO_3M) 871 hdev->esco_type |= (ESCO_3EV3); 872 873 if (hdev->features[0][5] & LMP_EDR_3S_ESCO) 874 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); 875 876 return rp->status; 877 } 878 879 static u8 hci_cc_read_local_ext_features(struct hci_dev *hdev, void *data, 880 struct sk_buff *skb) 881 { 882 struct hci_rp_read_local_ext_features *rp = data; 883 884 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 885 886 if (rp->status) 887 return rp->status; 888 889 if (hdev->max_page < rp->max_page) 890 hdev->max_page = rp->max_page; 891 892 if (rp->page < HCI_MAX_PAGES) 893 memcpy(hdev->features[rp->page], rp->features, 8); 894 895 return rp->status; 896 } 897 898 static u8 hci_cc_read_flow_control_mode(struct hci_dev *hdev, void *data, 899 struct sk_buff *skb) 900 { 901 struct hci_rp_read_flow_control_mode *rp = data; 902 903 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 904 905 if (rp->status) 906 return rp->status; 907 908 hdev->flow_ctl_mode = rp->mode; 909 910 return rp->status; 911 } 912 913 static u8 hci_cc_read_buffer_size(struct hci_dev *hdev, void *data, 914 struct sk_buff *skb) 915 { 916 struct hci_rp_read_buffer_size *rp = data; 917 918 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 919 920 if (rp->status) 921 return rp->status; 922 923 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); 924 hdev->sco_mtu = rp->sco_mtu; 925 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); 926 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); 927 928 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { 929 hdev->sco_mtu = 64; 930 hdev->sco_pkts = 8; 931 } 932 933 hdev->acl_cnt = hdev->acl_pkts; 934 hdev->sco_cnt = hdev->sco_pkts; 935 936 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, 937 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); 938 939 return rp->status; 940 } 941 942 static u8 hci_cc_read_bd_addr(struct hci_dev *hdev, void *data, 943 struct sk_buff *skb) 944 { 945 struct hci_rp_read_bd_addr *rp = data; 946 947 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 948 949 if (rp->status) 950 return rp->status; 951 952 if (test_bit(HCI_INIT, &hdev->flags)) 953 bacpy(&hdev->bdaddr, &rp->bdaddr); 954 955 if (hci_dev_test_flag(hdev, HCI_SETUP)) 956 bacpy(&hdev->setup_addr, &rp->bdaddr); 957 958 return rp->status; 959 } 960 961 static u8 hci_cc_read_local_pairing_opts(struct hci_dev *hdev, void *data, 962 struct sk_buff *skb) 963 { 964 struct hci_rp_read_local_pairing_opts *rp = data; 965 966 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 967 968 if (rp->status) 969 return rp->status; 970 971 if (hci_dev_test_flag(hdev, HCI_SETUP) || 972 hci_dev_test_flag(hdev, HCI_CONFIG)) { 973 hdev->pairing_opts = rp->pairing_opts; 974 hdev->max_enc_key_size = rp->max_key_size; 975 } 976 977 return rp->status; 978 } 979 980 static u8 hci_cc_read_page_scan_activity(struct hci_dev *hdev, void *data, 981 struct sk_buff *skb) 982 { 983 struct hci_rp_read_page_scan_activity *rp = data; 984 985 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 986 987 if (rp->status) 988 return rp->status; 989 990 if (test_bit(HCI_INIT, &hdev->flags)) { 991 hdev->page_scan_interval = __le16_to_cpu(rp->interval); 992 hdev->page_scan_window = __le16_to_cpu(rp->window); 993 } 994 995 return rp->status; 996 } 997 998 static u8 hci_cc_write_page_scan_activity(struct hci_dev *hdev, void *data, 999 struct sk_buff *skb) 1000 { 1001 struct hci_ev_status *rp = data; 1002 struct hci_cp_write_page_scan_activity *sent; 1003 1004 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1005 1006 if (rp->status) 1007 return rp->status; 1008 1009 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); 1010 if (!sent) 1011 return rp->status; 1012 1013 hdev->page_scan_interval = __le16_to_cpu(sent->interval); 1014 hdev->page_scan_window = __le16_to_cpu(sent->window); 1015 1016 return rp->status; 1017 } 1018 1019 static u8 hci_cc_read_page_scan_type(struct hci_dev *hdev, void *data, 1020 struct sk_buff *skb) 1021 { 1022 struct hci_rp_read_page_scan_type *rp = data; 1023 1024 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1025 1026 if (rp->status) 1027 return rp->status; 1028 1029 if (test_bit(HCI_INIT, &hdev->flags)) 1030 hdev->page_scan_type = rp->type; 1031 1032 return rp->status; 1033 } 1034 1035 static u8 hci_cc_write_page_scan_type(struct hci_dev *hdev, void *data, 1036 struct sk_buff *skb) 1037 { 1038 struct hci_ev_status *rp = data; 1039 u8 *type; 1040 1041 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1042 1043 if (rp->status) 1044 return rp->status; 1045 1046 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); 1047 if (type) 1048 hdev->page_scan_type = *type; 1049 1050 return rp->status; 1051 } 1052 1053 static u8 hci_cc_read_data_block_size(struct hci_dev *hdev, void *data, 1054 struct sk_buff *skb) 1055 { 1056 struct hci_rp_read_data_block_size *rp = data; 1057 1058 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1059 1060 if (rp->status) 1061 return rp->status; 1062 1063 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len); 1064 hdev->block_len = __le16_to_cpu(rp->block_len); 1065 hdev->num_blocks = __le16_to_cpu(rp->num_blocks); 1066 1067 hdev->block_cnt = hdev->num_blocks; 1068 1069 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu, 1070 hdev->block_cnt, hdev->block_len); 1071 1072 return rp->status; 1073 } 1074 1075 static u8 hci_cc_read_clock(struct hci_dev *hdev, void *data, 1076 struct sk_buff *skb) 1077 { 1078 struct hci_rp_read_clock *rp = data; 1079 struct hci_cp_read_clock *cp; 1080 struct hci_conn *conn; 1081 1082 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1083 1084 if (rp->status) 1085 return rp->status; 1086 1087 hci_dev_lock(hdev); 1088 1089 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 1090 if (!cp) 1091 goto unlock; 1092 1093 if (cp->which == 0x00) { 1094 hdev->clock = le32_to_cpu(rp->clock); 1095 goto unlock; 1096 } 1097 1098 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1099 if (conn) { 1100 conn->clock = le32_to_cpu(rp->clock); 1101 conn->clock_accuracy = le16_to_cpu(rp->accuracy); 1102 } 1103 1104 unlock: 1105 hci_dev_unlock(hdev); 1106 return rp->status; 1107 } 1108 1109 static u8 hci_cc_read_local_amp_info(struct hci_dev *hdev, void *data, 1110 struct sk_buff *skb) 1111 { 1112 struct hci_rp_read_local_amp_info *rp = data; 1113 1114 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1115 1116 if (rp->status) 1117 return rp->status; 1118 1119 hdev->amp_status = rp->amp_status; 1120 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw); 1121 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw); 1122 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency); 1123 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu); 1124 hdev->amp_type = rp->amp_type; 1125 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap); 1126 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size); 1127 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to); 1128 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to); 1129 1130 return rp->status; 1131 } 1132 1133 static u8 hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, void *data, 1134 struct sk_buff *skb) 1135 { 1136 struct hci_rp_read_inq_rsp_tx_power *rp = data; 1137 1138 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1139 1140 if (rp->status) 1141 return rp->status; 1142 1143 hdev->inq_tx_power = rp->tx_power; 1144 1145 return rp->status; 1146 } 1147 1148 static u8 hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, void *data, 1149 struct sk_buff *skb) 1150 { 1151 struct hci_rp_read_def_err_data_reporting *rp = data; 1152 1153 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1154 1155 if (rp->status) 1156 return rp->status; 1157 1158 hdev->err_data_reporting = rp->err_data_reporting; 1159 1160 return rp->status; 1161 } 1162 1163 static u8 hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, void *data, 1164 struct sk_buff *skb) 1165 { 1166 struct hci_ev_status *rp = data; 1167 struct hci_cp_write_def_err_data_reporting *cp; 1168 1169 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1170 1171 if (rp->status) 1172 return rp->status; 1173 1174 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); 1175 if (!cp) 1176 return rp->status; 1177 1178 hdev->err_data_reporting = cp->err_data_reporting; 1179 1180 return rp->status; 1181 } 1182 1183 static u8 hci_cc_pin_code_reply(struct hci_dev *hdev, void *data, 1184 struct sk_buff *skb) 1185 { 1186 struct hci_rp_pin_code_reply *rp = data; 1187 struct hci_cp_pin_code_reply *cp; 1188 struct hci_conn *conn; 1189 1190 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1191 1192 hci_dev_lock(hdev); 1193 1194 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1195 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); 1196 1197 if (rp->status) 1198 goto unlock; 1199 1200 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); 1201 if (!cp) 1202 goto unlock; 1203 1204 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 1205 if (conn) 1206 conn->pin_length = cp->pin_len; 1207 1208 unlock: 1209 hci_dev_unlock(hdev); 1210 return rp->status; 1211 } 1212 1213 static u8 hci_cc_pin_code_neg_reply(struct hci_dev *hdev, void *data, 1214 struct sk_buff *skb) 1215 { 1216 struct hci_rp_pin_code_neg_reply *rp = data; 1217 1218 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1219 1220 hci_dev_lock(hdev); 1221 1222 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1223 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, 1224 rp->status); 1225 1226 hci_dev_unlock(hdev); 1227 1228 return rp->status; 1229 } 1230 1231 static u8 hci_cc_le_read_buffer_size(struct hci_dev *hdev, void *data, 1232 struct sk_buff *skb) 1233 { 1234 struct hci_rp_le_read_buffer_size *rp = data; 1235 1236 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1237 1238 if (rp->status) 1239 return rp->status; 1240 1241 hdev->le_mtu = __le16_to_cpu(rp->le_mtu); 1242 hdev->le_pkts = rp->le_max_pkt; 1243 1244 hdev->le_cnt = hdev->le_pkts; 1245 1246 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); 1247 1248 return rp->status; 1249 } 1250 1251 static u8 hci_cc_le_read_local_features(struct hci_dev *hdev, void *data, 1252 struct sk_buff *skb) 1253 { 1254 struct hci_rp_le_read_local_features *rp = data; 1255 1256 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1257 1258 if (rp->status) 1259 return rp->status; 1260 1261 memcpy(hdev->le_features, rp->features, 8); 1262 1263 return rp->status; 1264 } 1265 1266 static u8 hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, void *data, 1267 struct sk_buff *skb) 1268 { 1269 struct hci_rp_le_read_adv_tx_power *rp = data; 1270 1271 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1272 1273 if (rp->status) 1274 return rp->status; 1275 1276 hdev->adv_tx_power = rp->tx_power; 1277 1278 return rp->status; 1279 } 1280 1281 static u8 hci_cc_user_confirm_reply(struct hci_dev *hdev, void *data, 1282 struct sk_buff *skb) 1283 { 1284 struct hci_rp_user_confirm_reply *rp = data; 1285 1286 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1287 1288 hci_dev_lock(hdev); 1289 1290 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1291 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, 1292 rp->status); 1293 1294 hci_dev_unlock(hdev); 1295 1296 return rp->status; 1297 } 1298 1299 static u8 hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, void *data, 1300 struct sk_buff *skb) 1301 { 1302 struct hci_rp_user_confirm_reply *rp = data; 1303 1304 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1305 1306 hci_dev_lock(hdev); 1307 1308 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1309 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, 1310 ACL_LINK, 0, rp->status); 1311 1312 hci_dev_unlock(hdev); 1313 1314 return rp->status; 1315 } 1316 1317 static u8 hci_cc_user_passkey_reply(struct hci_dev *hdev, void *data, 1318 struct sk_buff *skb) 1319 { 1320 struct hci_rp_user_confirm_reply *rp = data; 1321 1322 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1323 1324 hci_dev_lock(hdev); 1325 1326 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1327 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 1328 0, rp->status); 1329 1330 hci_dev_unlock(hdev); 1331 1332 return rp->status; 1333 } 1334 1335 static u8 hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, void *data, 1336 struct sk_buff *skb) 1337 { 1338 struct hci_rp_user_confirm_reply *rp = data; 1339 1340 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1341 1342 hci_dev_lock(hdev); 1343 1344 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1345 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, 1346 ACL_LINK, 0, rp->status); 1347 1348 hci_dev_unlock(hdev); 1349 1350 return rp->status; 1351 } 1352 1353 static u8 hci_cc_read_local_oob_data(struct hci_dev *hdev, void *data, 1354 struct sk_buff *skb) 1355 { 1356 struct hci_rp_read_local_oob_data *rp = data; 1357 1358 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1359 1360 return rp->status; 1361 } 1362 1363 static u8 hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, void *data, 1364 struct sk_buff *skb) 1365 { 1366 struct hci_rp_read_local_oob_ext_data *rp = data; 1367 1368 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1369 1370 return rp->status; 1371 } 1372 1373 static u8 hci_cc_le_set_random_addr(struct hci_dev *hdev, void *data, 1374 struct sk_buff *skb) 1375 { 1376 struct hci_ev_status *rp = data; 1377 bdaddr_t *sent; 1378 1379 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1380 1381 if (rp->status) 1382 return rp->status; 1383 1384 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); 1385 if (!sent) 1386 return rp->status; 1387 1388 hci_dev_lock(hdev); 1389 1390 bacpy(&hdev->random_addr, sent); 1391 1392 if (!bacmp(&hdev->rpa, sent)) { 1393 hci_dev_clear_flag(hdev, HCI_RPA_EXPIRED); 1394 queue_delayed_work(hdev->workqueue, &hdev->rpa_expired, 1395 secs_to_jiffies(hdev->rpa_timeout)); 1396 } 1397 1398 hci_dev_unlock(hdev); 1399 1400 return rp->status; 1401 } 1402 1403 static u8 hci_cc_le_set_default_phy(struct hci_dev *hdev, void *data, 1404 struct sk_buff *skb) 1405 { 1406 struct hci_ev_status *rp = data; 1407 struct hci_cp_le_set_default_phy *cp; 1408 1409 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1410 1411 if (rp->status) 1412 return rp->status; 1413 1414 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); 1415 if (!cp) 1416 return rp->status; 1417 1418 hci_dev_lock(hdev); 1419 1420 hdev->le_tx_def_phys = cp->tx_phys; 1421 hdev->le_rx_def_phys = cp->rx_phys; 1422 1423 hci_dev_unlock(hdev); 1424 1425 return rp->status; 1426 } 1427 1428 static u8 hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, void *data, 1429 struct sk_buff *skb) 1430 { 1431 struct hci_ev_status *rp = data; 1432 struct hci_cp_le_set_adv_set_rand_addr *cp; 1433 struct adv_info *adv; 1434 1435 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1436 1437 if (rp->status) 1438 return rp->status; 1439 1440 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); 1441 /* Update only in case the adv instance since handle 0x00 shall be using 1442 * HCI_OP_LE_SET_RANDOM_ADDR since that allows both extended and 1443 * non-extended adverting. 1444 */ 1445 if (!cp || !cp->handle) 1446 return rp->status; 1447 1448 hci_dev_lock(hdev); 1449 1450 adv = hci_find_adv_instance(hdev, cp->handle); 1451 if (adv) { 1452 bacpy(&adv->random_addr, &cp->bdaddr); 1453 if (!bacmp(&hdev->rpa, &cp->bdaddr)) { 1454 adv->rpa_expired = false; 1455 queue_delayed_work(hdev->workqueue, 1456 &adv->rpa_expired_cb, 1457 secs_to_jiffies(hdev->rpa_timeout)); 1458 } 1459 } 1460 1461 hci_dev_unlock(hdev); 1462 1463 return rp->status; 1464 } 1465 1466 static u8 hci_cc_le_remove_adv_set(struct hci_dev *hdev, void *data, 1467 struct sk_buff *skb) 1468 { 1469 struct hci_ev_status *rp = data; 1470 u8 *instance; 1471 int err; 1472 1473 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1474 1475 if (rp->status) 1476 return rp->status; 1477 1478 instance = hci_sent_cmd_data(hdev, HCI_OP_LE_REMOVE_ADV_SET); 1479 if (!instance) 1480 return rp->status; 1481 1482 hci_dev_lock(hdev); 1483 1484 err = hci_remove_adv_instance(hdev, *instance); 1485 if (!err) 1486 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), hdev, 1487 *instance); 1488 1489 hci_dev_unlock(hdev); 1490 1491 return rp->status; 1492 } 1493 1494 static u8 hci_cc_le_clear_adv_sets(struct hci_dev *hdev, void *data, 1495 struct sk_buff *skb) 1496 { 1497 struct hci_ev_status *rp = data; 1498 struct adv_info *adv, *n; 1499 int err; 1500 1501 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1502 1503 if (rp->status) 1504 return rp->status; 1505 1506 if (!hci_sent_cmd_data(hdev, HCI_OP_LE_CLEAR_ADV_SETS)) 1507 return rp->status; 1508 1509 hci_dev_lock(hdev); 1510 1511 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 1512 u8 instance = adv->instance; 1513 1514 err = hci_remove_adv_instance(hdev, instance); 1515 if (!err) 1516 mgmt_advertising_removed(hci_skb_sk(hdev->sent_cmd), 1517 hdev, instance); 1518 } 1519 1520 hci_dev_unlock(hdev); 1521 1522 return rp->status; 1523 } 1524 1525 static u8 hci_cc_le_read_transmit_power(struct hci_dev *hdev, void *data, 1526 struct sk_buff *skb) 1527 { 1528 struct hci_rp_le_read_transmit_power *rp = data; 1529 1530 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1531 1532 if (rp->status) 1533 return rp->status; 1534 1535 hdev->min_le_tx_power = rp->min_le_tx_power; 1536 hdev->max_le_tx_power = rp->max_le_tx_power; 1537 1538 return rp->status; 1539 } 1540 1541 static u8 hci_cc_le_set_privacy_mode(struct hci_dev *hdev, void *data, 1542 struct sk_buff *skb) 1543 { 1544 struct hci_ev_status *rp = data; 1545 struct hci_cp_le_set_privacy_mode *cp; 1546 struct hci_conn_params *params; 1547 1548 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1549 1550 if (rp->status) 1551 return rp->status; 1552 1553 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PRIVACY_MODE); 1554 if (!cp) 1555 return rp->status; 1556 1557 hci_dev_lock(hdev); 1558 1559 params = hci_conn_params_lookup(hdev, &cp->bdaddr, cp->bdaddr_type); 1560 if (params) 1561 params->privacy_mode = cp->mode; 1562 1563 hci_dev_unlock(hdev); 1564 1565 return rp->status; 1566 } 1567 1568 static u8 hci_cc_le_set_adv_enable(struct hci_dev *hdev, void *data, 1569 struct sk_buff *skb) 1570 { 1571 struct hci_ev_status *rp = data; 1572 __u8 *sent; 1573 1574 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1575 1576 if (rp->status) 1577 return rp->status; 1578 1579 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); 1580 if (!sent) 1581 return rp->status; 1582 1583 hci_dev_lock(hdev); 1584 1585 /* If we're doing connection initiation as peripheral. Set a 1586 * timeout in case something goes wrong. 1587 */ 1588 if (*sent) { 1589 struct hci_conn *conn; 1590 1591 hci_dev_set_flag(hdev, HCI_LE_ADV); 1592 1593 conn = hci_lookup_le_connect(hdev); 1594 if (conn) 1595 queue_delayed_work(hdev->workqueue, 1596 &conn->le_conn_timeout, 1597 conn->conn_timeout); 1598 } else { 1599 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1600 } 1601 1602 hci_dev_unlock(hdev); 1603 1604 return rp->status; 1605 } 1606 1607 static u8 hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, void *data, 1608 struct sk_buff *skb) 1609 { 1610 struct hci_cp_le_set_ext_adv_enable *cp; 1611 struct hci_cp_ext_adv_set *set; 1612 struct adv_info *adv = NULL, *n; 1613 struct hci_ev_status *rp = data; 1614 1615 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1616 1617 if (rp->status) 1618 return rp->status; 1619 1620 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); 1621 if (!cp) 1622 return rp->status; 1623 1624 set = (void *)cp->data; 1625 1626 hci_dev_lock(hdev); 1627 1628 if (cp->num_of_sets) 1629 adv = hci_find_adv_instance(hdev, set->handle); 1630 1631 if (cp->enable) { 1632 struct hci_conn *conn; 1633 1634 hci_dev_set_flag(hdev, HCI_LE_ADV); 1635 1636 if (adv) 1637 adv->enabled = true; 1638 1639 conn = hci_lookup_le_connect(hdev); 1640 if (conn) 1641 queue_delayed_work(hdev->workqueue, 1642 &conn->le_conn_timeout, 1643 conn->conn_timeout); 1644 } else { 1645 if (cp->num_of_sets) { 1646 if (adv) 1647 adv->enabled = false; 1648 1649 /* If just one instance was disabled check if there are 1650 * any other instance enabled before clearing HCI_LE_ADV 1651 */ 1652 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1653 list) { 1654 if (adv->enabled) 1655 goto unlock; 1656 } 1657 } else { 1658 /* All instances shall be considered disabled */ 1659 list_for_each_entry_safe(adv, n, &hdev->adv_instances, 1660 list) 1661 adv->enabled = false; 1662 } 1663 1664 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1665 } 1666 1667 unlock: 1668 hci_dev_unlock(hdev); 1669 return rp->status; 1670 } 1671 1672 static u8 hci_cc_le_set_scan_param(struct hci_dev *hdev, void *data, 1673 struct sk_buff *skb) 1674 { 1675 struct hci_cp_le_set_scan_param *cp; 1676 struct hci_ev_status *rp = data; 1677 1678 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1679 1680 if (rp->status) 1681 return rp->status; 1682 1683 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); 1684 if (!cp) 1685 return rp->status; 1686 1687 hci_dev_lock(hdev); 1688 1689 hdev->le_scan_type = cp->type; 1690 1691 hci_dev_unlock(hdev); 1692 1693 return rp->status; 1694 } 1695 1696 static u8 hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, void *data, 1697 struct sk_buff *skb) 1698 { 1699 struct hci_cp_le_set_ext_scan_params *cp; 1700 struct hci_ev_status *rp = data; 1701 struct hci_cp_le_scan_phy_params *phy_param; 1702 1703 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1704 1705 if (rp->status) 1706 return rp->status; 1707 1708 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); 1709 if (!cp) 1710 return rp->status; 1711 1712 phy_param = (void *)cp->data; 1713 1714 hci_dev_lock(hdev); 1715 1716 hdev->le_scan_type = phy_param->type; 1717 1718 hci_dev_unlock(hdev); 1719 1720 return rp->status; 1721 } 1722 1723 static bool has_pending_adv_report(struct hci_dev *hdev) 1724 { 1725 struct discovery_state *d = &hdev->discovery; 1726 1727 return bacmp(&d->last_adv_addr, BDADDR_ANY); 1728 } 1729 1730 static void clear_pending_adv_report(struct hci_dev *hdev) 1731 { 1732 struct discovery_state *d = &hdev->discovery; 1733 1734 bacpy(&d->last_adv_addr, BDADDR_ANY); 1735 d->last_adv_data_len = 0; 1736 } 1737 1738 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, 1739 u8 bdaddr_type, s8 rssi, u32 flags, 1740 u8 *data, u8 len) 1741 { 1742 struct discovery_state *d = &hdev->discovery; 1743 1744 if (len > HCI_MAX_AD_LENGTH) 1745 return; 1746 1747 bacpy(&d->last_adv_addr, bdaddr); 1748 d->last_adv_addr_type = bdaddr_type; 1749 d->last_adv_rssi = rssi; 1750 d->last_adv_flags = flags; 1751 memcpy(d->last_adv_data, data, len); 1752 d->last_adv_data_len = len; 1753 } 1754 1755 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) 1756 { 1757 hci_dev_lock(hdev); 1758 1759 switch (enable) { 1760 case LE_SCAN_ENABLE: 1761 hci_dev_set_flag(hdev, HCI_LE_SCAN); 1762 if (hdev->le_scan_type == LE_SCAN_ACTIVE) 1763 clear_pending_adv_report(hdev); 1764 if (hci_dev_test_flag(hdev, HCI_MESH)) 1765 hci_discovery_set_state(hdev, DISCOVERY_FINDING); 1766 break; 1767 1768 case LE_SCAN_DISABLE: 1769 /* We do this here instead of when setting DISCOVERY_STOPPED 1770 * since the latter would potentially require waiting for 1771 * inquiry to stop too. 1772 */ 1773 if (has_pending_adv_report(hdev)) { 1774 struct discovery_state *d = &hdev->discovery; 1775 1776 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 1777 d->last_adv_addr_type, NULL, 1778 d->last_adv_rssi, d->last_adv_flags, 1779 d->last_adv_data, 1780 d->last_adv_data_len, NULL, 0, 0); 1781 } 1782 1783 /* Cancel this timer so that we don't try to disable scanning 1784 * when it's already disabled. 1785 */ 1786 cancel_delayed_work(&hdev->le_scan_disable); 1787 1788 hci_dev_clear_flag(hdev, HCI_LE_SCAN); 1789 1790 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we 1791 * interrupted scanning due to a connect request. Mark 1792 * therefore discovery as stopped. 1793 */ 1794 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) 1795 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 1796 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && 1797 hdev->discovery.state == DISCOVERY_FINDING) 1798 queue_work(hdev->workqueue, &hdev->reenable_adv_work); 1799 1800 break; 1801 1802 default: 1803 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", 1804 enable); 1805 break; 1806 } 1807 1808 hci_dev_unlock(hdev); 1809 } 1810 1811 static u8 hci_cc_le_set_scan_enable(struct hci_dev *hdev, void *data, 1812 struct sk_buff *skb) 1813 { 1814 struct hci_cp_le_set_scan_enable *cp; 1815 struct hci_ev_status *rp = data; 1816 1817 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1818 1819 if (rp->status) 1820 return rp->status; 1821 1822 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); 1823 if (!cp) 1824 return rp->status; 1825 1826 le_set_scan_enable_complete(hdev, cp->enable); 1827 1828 return rp->status; 1829 } 1830 1831 static u8 hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, void *data, 1832 struct sk_buff *skb) 1833 { 1834 struct hci_cp_le_set_ext_scan_enable *cp; 1835 struct hci_ev_status *rp = data; 1836 1837 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1838 1839 if (rp->status) 1840 return rp->status; 1841 1842 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); 1843 if (!cp) 1844 return rp->status; 1845 1846 le_set_scan_enable_complete(hdev, cp->enable); 1847 1848 return rp->status; 1849 } 1850 1851 static u8 hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, void *data, 1852 struct sk_buff *skb) 1853 { 1854 struct hci_rp_le_read_num_supported_adv_sets *rp = data; 1855 1856 bt_dev_dbg(hdev, "status 0x%2.2x No of Adv sets %u", rp->status, 1857 rp->num_of_sets); 1858 1859 if (rp->status) 1860 return rp->status; 1861 1862 hdev->le_num_of_adv_sets = rp->num_of_sets; 1863 1864 return rp->status; 1865 } 1866 1867 static u8 hci_cc_le_read_accept_list_size(struct hci_dev *hdev, void *data, 1868 struct sk_buff *skb) 1869 { 1870 struct hci_rp_le_read_accept_list_size *rp = data; 1871 1872 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 1873 1874 if (rp->status) 1875 return rp->status; 1876 1877 hdev->le_accept_list_size = rp->size; 1878 1879 return rp->status; 1880 } 1881 1882 static u8 hci_cc_le_clear_accept_list(struct hci_dev *hdev, void *data, 1883 struct sk_buff *skb) 1884 { 1885 struct hci_ev_status *rp = data; 1886 1887 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1888 1889 if (rp->status) 1890 return rp->status; 1891 1892 hci_dev_lock(hdev); 1893 hci_bdaddr_list_clear(&hdev->le_accept_list); 1894 hci_dev_unlock(hdev); 1895 1896 return rp->status; 1897 } 1898 1899 static u8 hci_cc_le_add_to_accept_list(struct hci_dev *hdev, void *data, 1900 struct sk_buff *skb) 1901 { 1902 struct hci_cp_le_add_to_accept_list *sent; 1903 struct hci_ev_status *rp = data; 1904 1905 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1906 1907 if (rp->status) 1908 return rp->status; 1909 1910 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_ACCEPT_LIST); 1911 if (!sent) 1912 return rp->status; 1913 1914 hci_dev_lock(hdev); 1915 hci_bdaddr_list_add(&hdev->le_accept_list, &sent->bdaddr, 1916 sent->bdaddr_type); 1917 hci_dev_unlock(hdev); 1918 1919 return rp->status; 1920 } 1921 1922 static u8 hci_cc_le_del_from_accept_list(struct hci_dev *hdev, void *data, 1923 struct sk_buff *skb) 1924 { 1925 struct hci_cp_le_del_from_accept_list *sent; 1926 struct hci_ev_status *rp = data; 1927 1928 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1929 1930 if (rp->status) 1931 return rp->status; 1932 1933 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_ACCEPT_LIST); 1934 if (!sent) 1935 return rp->status; 1936 1937 hci_dev_lock(hdev); 1938 hci_bdaddr_list_del(&hdev->le_accept_list, &sent->bdaddr, 1939 sent->bdaddr_type); 1940 hci_dev_unlock(hdev); 1941 1942 return rp->status; 1943 } 1944 1945 static u8 hci_cc_le_read_supported_states(struct hci_dev *hdev, void *data, 1946 struct sk_buff *skb) 1947 { 1948 struct hci_rp_le_read_supported_states *rp = data; 1949 1950 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1951 1952 if (rp->status) 1953 return rp->status; 1954 1955 memcpy(hdev->le_states, rp->le_states, 8); 1956 1957 return rp->status; 1958 } 1959 1960 static u8 hci_cc_le_read_def_data_len(struct hci_dev *hdev, void *data, 1961 struct sk_buff *skb) 1962 { 1963 struct hci_rp_le_read_def_data_len *rp = data; 1964 1965 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1966 1967 if (rp->status) 1968 return rp->status; 1969 1970 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); 1971 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); 1972 1973 return rp->status; 1974 } 1975 1976 static u8 hci_cc_le_write_def_data_len(struct hci_dev *hdev, void *data, 1977 struct sk_buff *skb) 1978 { 1979 struct hci_cp_le_write_def_data_len *sent; 1980 struct hci_ev_status *rp = data; 1981 1982 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 1983 1984 if (rp->status) 1985 return rp->status; 1986 1987 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); 1988 if (!sent) 1989 return rp->status; 1990 1991 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); 1992 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); 1993 1994 return rp->status; 1995 } 1996 1997 static u8 hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, void *data, 1998 struct sk_buff *skb) 1999 { 2000 struct hci_cp_le_add_to_resolv_list *sent; 2001 struct hci_ev_status *rp = data; 2002 2003 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2004 2005 if (rp->status) 2006 return rp->status; 2007 2008 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); 2009 if (!sent) 2010 return rp->status; 2011 2012 hci_dev_lock(hdev); 2013 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2014 sent->bdaddr_type, sent->peer_irk, 2015 sent->local_irk); 2016 hci_dev_unlock(hdev); 2017 2018 return rp->status; 2019 } 2020 2021 static u8 hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, void *data, 2022 struct sk_buff *skb) 2023 { 2024 struct hci_cp_le_del_from_resolv_list *sent; 2025 struct hci_ev_status *rp = data; 2026 2027 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2028 2029 if (rp->status) 2030 return rp->status; 2031 2032 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); 2033 if (!sent) 2034 return rp->status; 2035 2036 hci_dev_lock(hdev); 2037 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 2038 sent->bdaddr_type); 2039 hci_dev_unlock(hdev); 2040 2041 return rp->status; 2042 } 2043 2044 static u8 hci_cc_le_clear_resolv_list(struct hci_dev *hdev, void *data, 2045 struct sk_buff *skb) 2046 { 2047 struct hci_ev_status *rp = data; 2048 2049 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2050 2051 if (rp->status) 2052 return rp->status; 2053 2054 hci_dev_lock(hdev); 2055 hci_bdaddr_list_clear(&hdev->le_resolv_list); 2056 hci_dev_unlock(hdev); 2057 2058 return rp->status; 2059 } 2060 2061 static u8 hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, void *data, 2062 struct sk_buff *skb) 2063 { 2064 struct hci_rp_le_read_resolv_list_size *rp = data; 2065 2066 bt_dev_dbg(hdev, "status 0x%2.2x size %u", rp->status, rp->size); 2067 2068 if (rp->status) 2069 return rp->status; 2070 2071 hdev->le_resolv_list_size = rp->size; 2072 2073 return rp->status; 2074 } 2075 2076 static u8 hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, void *data, 2077 struct sk_buff *skb) 2078 { 2079 struct hci_ev_status *rp = data; 2080 __u8 *sent; 2081 2082 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2083 2084 if (rp->status) 2085 return rp->status; 2086 2087 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); 2088 if (!sent) 2089 return rp->status; 2090 2091 hci_dev_lock(hdev); 2092 2093 if (*sent) 2094 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); 2095 else 2096 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); 2097 2098 hci_dev_unlock(hdev); 2099 2100 return rp->status; 2101 } 2102 2103 static u8 hci_cc_le_read_max_data_len(struct hci_dev *hdev, void *data, 2104 struct sk_buff *skb) 2105 { 2106 struct hci_rp_le_read_max_data_len *rp = data; 2107 2108 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2109 2110 if (rp->status) 2111 return rp->status; 2112 2113 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); 2114 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); 2115 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); 2116 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); 2117 2118 return rp->status; 2119 } 2120 2121 static u8 hci_cc_write_le_host_supported(struct hci_dev *hdev, void *data, 2122 struct sk_buff *skb) 2123 { 2124 struct hci_cp_write_le_host_supported *sent; 2125 struct hci_ev_status *rp = data; 2126 2127 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2128 2129 if (rp->status) 2130 return rp->status; 2131 2132 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); 2133 if (!sent) 2134 return rp->status; 2135 2136 hci_dev_lock(hdev); 2137 2138 if (sent->le) { 2139 hdev->features[1][0] |= LMP_HOST_LE; 2140 hci_dev_set_flag(hdev, HCI_LE_ENABLED); 2141 } else { 2142 hdev->features[1][0] &= ~LMP_HOST_LE; 2143 hci_dev_clear_flag(hdev, HCI_LE_ENABLED); 2144 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 2145 } 2146 2147 if (sent->simul) 2148 hdev->features[1][0] |= LMP_HOST_LE_BREDR; 2149 else 2150 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; 2151 2152 hci_dev_unlock(hdev); 2153 2154 return rp->status; 2155 } 2156 2157 static u8 hci_cc_set_adv_param(struct hci_dev *hdev, void *data, 2158 struct sk_buff *skb) 2159 { 2160 struct hci_cp_le_set_adv_param *cp; 2161 struct hci_ev_status *rp = data; 2162 2163 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2164 2165 if (rp->status) 2166 return rp->status; 2167 2168 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); 2169 if (!cp) 2170 return rp->status; 2171 2172 hci_dev_lock(hdev); 2173 hdev->adv_addr_type = cp->own_address_type; 2174 hci_dev_unlock(hdev); 2175 2176 return rp->status; 2177 } 2178 2179 static u8 hci_cc_set_ext_adv_param(struct hci_dev *hdev, void *data, 2180 struct sk_buff *skb) 2181 { 2182 struct hci_rp_le_set_ext_adv_params *rp = data; 2183 struct hci_cp_le_set_ext_adv_params *cp; 2184 struct adv_info *adv_instance; 2185 2186 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2187 2188 if (rp->status) 2189 return rp->status; 2190 2191 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); 2192 if (!cp) 2193 return rp->status; 2194 2195 hci_dev_lock(hdev); 2196 hdev->adv_addr_type = cp->own_addr_type; 2197 if (!cp->handle) { 2198 /* Store in hdev for instance 0 */ 2199 hdev->adv_tx_power = rp->tx_power; 2200 } else { 2201 adv_instance = hci_find_adv_instance(hdev, cp->handle); 2202 if (adv_instance) 2203 adv_instance->tx_power = rp->tx_power; 2204 } 2205 /* Update adv data as tx power is known now */ 2206 hci_update_adv_data(hdev, cp->handle); 2207 2208 hci_dev_unlock(hdev); 2209 2210 return rp->status; 2211 } 2212 2213 static u8 hci_cc_read_rssi(struct hci_dev *hdev, void *data, 2214 struct sk_buff *skb) 2215 { 2216 struct hci_rp_read_rssi *rp = data; 2217 struct hci_conn *conn; 2218 2219 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2220 2221 if (rp->status) 2222 return rp->status; 2223 2224 hci_dev_lock(hdev); 2225 2226 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2227 if (conn) 2228 conn->rssi = rp->rssi; 2229 2230 hci_dev_unlock(hdev); 2231 2232 return rp->status; 2233 } 2234 2235 static u8 hci_cc_read_tx_power(struct hci_dev *hdev, void *data, 2236 struct sk_buff *skb) 2237 { 2238 struct hci_cp_read_tx_power *sent; 2239 struct hci_rp_read_tx_power *rp = data; 2240 struct hci_conn *conn; 2241 2242 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2243 2244 if (rp->status) 2245 return rp->status; 2246 2247 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 2248 if (!sent) 2249 return rp->status; 2250 2251 hci_dev_lock(hdev); 2252 2253 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 2254 if (!conn) 2255 goto unlock; 2256 2257 switch (sent->type) { 2258 case 0x00: 2259 conn->tx_power = rp->tx_power; 2260 break; 2261 case 0x01: 2262 conn->max_tx_power = rp->tx_power; 2263 break; 2264 } 2265 2266 unlock: 2267 hci_dev_unlock(hdev); 2268 return rp->status; 2269 } 2270 2271 static u8 hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, void *data, 2272 struct sk_buff *skb) 2273 { 2274 struct hci_ev_status *rp = data; 2275 u8 *mode; 2276 2277 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 2278 2279 if (rp->status) 2280 return rp->status; 2281 2282 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 2283 if (mode) 2284 hdev->ssp_debug_mode = *mode; 2285 2286 return rp->status; 2287 } 2288 2289 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 2290 { 2291 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2292 2293 if (status) { 2294 hci_conn_check_pending(hdev); 2295 return; 2296 } 2297 2298 set_bit(HCI_INQUIRY, &hdev->flags); 2299 } 2300 2301 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 2302 { 2303 struct hci_cp_create_conn *cp; 2304 struct hci_conn *conn; 2305 2306 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2307 2308 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 2309 if (!cp) 2310 return; 2311 2312 hci_dev_lock(hdev); 2313 2314 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2315 2316 bt_dev_dbg(hdev, "bdaddr %pMR hcon %p", &cp->bdaddr, conn); 2317 2318 if (status) { 2319 if (conn && conn->state == BT_CONNECT) { 2320 if (status != 0x0c || conn->attempt > 2) { 2321 conn->state = BT_CLOSED; 2322 hci_connect_cfm(conn, status); 2323 hci_conn_del(conn); 2324 } else 2325 conn->state = BT_CONNECT2; 2326 } 2327 } else { 2328 if (!conn) { 2329 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr, 2330 HCI_ROLE_MASTER); 2331 if (!conn) 2332 bt_dev_err(hdev, "no memory for new connection"); 2333 } 2334 } 2335 2336 hci_dev_unlock(hdev); 2337 } 2338 2339 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 2340 { 2341 struct hci_cp_add_sco *cp; 2342 struct hci_conn *acl, *sco; 2343 __u16 handle; 2344 2345 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2346 2347 if (!status) 2348 return; 2349 2350 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 2351 if (!cp) 2352 return; 2353 2354 handle = __le16_to_cpu(cp->handle); 2355 2356 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2357 2358 hci_dev_lock(hdev); 2359 2360 acl = hci_conn_hash_lookup_handle(hdev, handle); 2361 if (acl) { 2362 sco = acl->link; 2363 if (sco) { 2364 sco->state = BT_CLOSED; 2365 2366 hci_connect_cfm(sco, status); 2367 hci_conn_del(sco); 2368 } 2369 } 2370 2371 hci_dev_unlock(hdev); 2372 } 2373 2374 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 2375 { 2376 struct hci_cp_auth_requested *cp; 2377 struct hci_conn *conn; 2378 2379 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2380 2381 if (!status) 2382 return; 2383 2384 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 2385 if (!cp) 2386 return; 2387 2388 hci_dev_lock(hdev); 2389 2390 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2391 if (conn) { 2392 if (conn->state == BT_CONFIG) { 2393 hci_connect_cfm(conn, status); 2394 hci_conn_drop(conn); 2395 } 2396 } 2397 2398 hci_dev_unlock(hdev); 2399 } 2400 2401 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 2402 { 2403 struct hci_cp_set_conn_encrypt *cp; 2404 struct hci_conn *conn; 2405 2406 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2407 2408 if (!status) 2409 return; 2410 2411 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 2412 if (!cp) 2413 return; 2414 2415 hci_dev_lock(hdev); 2416 2417 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2418 if (conn) { 2419 if (conn->state == BT_CONFIG) { 2420 hci_connect_cfm(conn, status); 2421 hci_conn_drop(conn); 2422 } 2423 } 2424 2425 hci_dev_unlock(hdev); 2426 } 2427 2428 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 2429 struct hci_conn *conn) 2430 { 2431 if (conn->state != BT_CONFIG || !conn->out) 2432 return 0; 2433 2434 if (conn->pending_sec_level == BT_SECURITY_SDP) 2435 return 0; 2436 2437 /* Only request authentication for SSP connections or non-SSP 2438 * devices with sec_level MEDIUM or HIGH or if MITM protection 2439 * is requested. 2440 */ 2441 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 2442 conn->pending_sec_level != BT_SECURITY_FIPS && 2443 conn->pending_sec_level != BT_SECURITY_HIGH && 2444 conn->pending_sec_level != BT_SECURITY_MEDIUM) 2445 return 0; 2446 2447 return 1; 2448 } 2449 2450 static int hci_resolve_name(struct hci_dev *hdev, 2451 struct inquiry_entry *e) 2452 { 2453 struct hci_cp_remote_name_req cp; 2454 2455 memset(&cp, 0, sizeof(cp)); 2456 2457 bacpy(&cp.bdaddr, &e->data.bdaddr); 2458 cp.pscan_rep_mode = e->data.pscan_rep_mode; 2459 cp.pscan_mode = e->data.pscan_mode; 2460 cp.clock_offset = e->data.clock_offset; 2461 2462 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 2463 } 2464 2465 static bool hci_resolve_next_name(struct hci_dev *hdev) 2466 { 2467 struct discovery_state *discov = &hdev->discovery; 2468 struct inquiry_entry *e; 2469 2470 if (list_empty(&discov->resolve)) 2471 return false; 2472 2473 /* We should stop if we already spent too much time resolving names. */ 2474 if (time_after(jiffies, discov->name_resolve_timeout)) { 2475 bt_dev_warn_ratelimited(hdev, "Name resolve takes too long."); 2476 return false; 2477 } 2478 2479 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2480 if (!e) 2481 return false; 2482 2483 if (hci_resolve_name(hdev, e) == 0) { 2484 e->name_state = NAME_PENDING; 2485 return true; 2486 } 2487 2488 return false; 2489 } 2490 2491 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2492 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2493 { 2494 struct discovery_state *discov = &hdev->discovery; 2495 struct inquiry_entry *e; 2496 2497 /* Update the mgmt connected state if necessary. Be careful with 2498 * conn objects that exist but are not (yet) connected however. 2499 * Only those in BT_CONFIG or BT_CONNECTED states can be 2500 * considered connected. 2501 */ 2502 if (conn && 2503 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) && 2504 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 2505 mgmt_device_connected(hdev, conn, name, name_len); 2506 2507 if (discov->state == DISCOVERY_STOPPED) 2508 return; 2509 2510 if (discov->state == DISCOVERY_STOPPING) 2511 goto discov_complete; 2512 2513 if (discov->state != DISCOVERY_RESOLVING) 2514 return; 2515 2516 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2517 /* If the device was not found in a list of found devices names of which 2518 * are pending. there is no need to continue resolving a next name as it 2519 * will be done upon receiving another Remote Name Request Complete 2520 * Event */ 2521 if (!e) 2522 return; 2523 2524 list_del(&e->list); 2525 2526 e->name_state = name ? NAME_KNOWN : NAME_NOT_KNOWN; 2527 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, e->data.rssi, 2528 name, name_len); 2529 2530 if (hci_resolve_next_name(hdev)) 2531 return; 2532 2533 discov_complete: 2534 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2535 } 2536 2537 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2538 { 2539 struct hci_cp_remote_name_req *cp; 2540 struct hci_conn *conn; 2541 2542 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2543 2544 /* If successful wait for the name req complete event before 2545 * checking for the need to do authentication */ 2546 if (!status) 2547 return; 2548 2549 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2550 if (!cp) 2551 return; 2552 2553 hci_dev_lock(hdev); 2554 2555 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2556 2557 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2558 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2559 2560 if (!conn) 2561 goto unlock; 2562 2563 if (!hci_outgoing_auth_needed(hdev, conn)) 2564 goto unlock; 2565 2566 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2567 struct hci_cp_auth_requested auth_cp; 2568 2569 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2570 2571 auth_cp.handle = __cpu_to_le16(conn->handle); 2572 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2573 sizeof(auth_cp), &auth_cp); 2574 } 2575 2576 unlock: 2577 hci_dev_unlock(hdev); 2578 } 2579 2580 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2581 { 2582 struct hci_cp_read_remote_features *cp; 2583 struct hci_conn *conn; 2584 2585 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2586 2587 if (!status) 2588 return; 2589 2590 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2591 if (!cp) 2592 return; 2593 2594 hci_dev_lock(hdev); 2595 2596 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2597 if (conn) { 2598 if (conn->state == BT_CONFIG) { 2599 hci_connect_cfm(conn, status); 2600 hci_conn_drop(conn); 2601 } 2602 } 2603 2604 hci_dev_unlock(hdev); 2605 } 2606 2607 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2608 { 2609 struct hci_cp_read_remote_ext_features *cp; 2610 struct hci_conn *conn; 2611 2612 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2613 2614 if (!status) 2615 return; 2616 2617 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2618 if (!cp) 2619 return; 2620 2621 hci_dev_lock(hdev); 2622 2623 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2624 if (conn) { 2625 if (conn->state == BT_CONFIG) { 2626 hci_connect_cfm(conn, status); 2627 hci_conn_drop(conn); 2628 } 2629 } 2630 2631 hci_dev_unlock(hdev); 2632 } 2633 2634 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2635 { 2636 struct hci_cp_setup_sync_conn *cp; 2637 struct hci_conn *acl, *sco; 2638 __u16 handle; 2639 2640 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2641 2642 if (!status) 2643 return; 2644 2645 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2646 if (!cp) 2647 return; 2648 2649 handle = __le16_to_cpu(cp->handle); 2650 2651 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2652 2653 hci_dev_lock(hdev); 2654 2655 acl = hci_conn_hash_lookup_handle(hdev, handle); 2656 if (acl) { 2657 sco = acl->link; 2658 if (sco) { 2659 sco->state = BT_CLOSED; 2660 2661 hci_connect_cfm(sco, status); 2662 hci_conn_del(sco); 2663 } 2664 } 2665 2666 hci_dev_unlock(hdev); 2667 } 2668 2669 static void hci_cs_enhanced_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2670 { 2671 struct hci_cp_enhanced_setup_sync_conn *cp; 2672 struct hci_conn *acl, *sco; 2673 __u16 handle; 2674 2675 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2676 2677 if (!status) 2678 return; 2679 2680 cp = hci_sent_cmd_data(hdev, HCI_OP_ENHANCED_SETUP_SYNC_CONN); 2681 if (!cp) 2682 return; 2683 2684 handle = __le16_to_cpu(cp->handle); 2685 2686 bt_dev_dbg(hdev, "handle 0x%4.4x", handle); 2687 2688 hci_dev_lock(hdev); 2689 2690 acl = hci_conn_hash_lookup_handle(hdev, handle); 2691 if (acl) { 2692 sco = acl->link; 2693 if (sco) { 2694 sco->state = BT_CLOSED; 2695 2696 hci_connect_cfm(sco, status); 2697 hci_conn_del(sco); 2698 } 2699 } 2700 2701 hci_dev_unlock(hdev); 2702 } 2703 2704 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2705 { 2706 struct hci_cp_sniff_mode *cp; 2707 struct hci_conn *conn; 2708 2709 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2710 2711 if (!status) 2712 return; 2713 2714 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2715 if (!cp) 2716 return; 2717 2718 hci_dev_lock(hdev); 2719 2720 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2721 if (conn) { 2722 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2723 2724 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2725 hci_sco_setup(conn, status); 2726 } 2727 2728 hci_dev_unlock(hdev); 2729 } 2730 2731 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2732 { 2733 struct hci_cp_exit_sniff_mode *cp; 2734 struct hci_conn *conn; 2735 2736 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2737 2738 if (!status) 2739 return; 2740 2741 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2742 if (!cp) 2743 return; 2744 2745 hci_dev_lock(hdev); 2746 2747 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2748 if (conn) { 2749 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2750 2751 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2752 hci_sco_setup(conn, status); 2753 } 2754 2755 hci_dev_unlock(hdev); 2756 } 2757 2758 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2759 { 2760 struct hci_cp_disconnect *cp; 2761 struct hci_conn_params *params; 2762 struct hci_conn *conn; 2763 bool mgmt_conn; 2764 2765 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2766 2767 /* Wait for HCI_EV_DISCONN_COMPLETE if status 0x00 and not suspended 2768 * otherwise cleanup the connection immediately. 2769 */ 2770 if (!status && !hdev->suspended) 2771 return; 2772 2773 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2774 if (!cp) 2775 return; 2776 2777 hci_dev_lock(hdev); 2778 2779 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2780 if (!conn) 2781 goto unlock; 2782 2783 if (status) { 2784 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2785 conn->dst_type, status); 2786 2787 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 2788 hdev->cur_adv_instance = conn->adv_instance; 2789 hci_enable_advertising(hdev); 2790 } 2791 2792 goto done; 2793 } 2794 2795 mgmt_conn = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2796 2797 if (conn->type == ACL_LINK) { 2798 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2799 hci_remove_link_key(hdev, &conn->dst); 2800 } 2801 2802 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2803 if (params) { 2804 switch (params->auto_connect) { 2805 case HCI_AUTO_CONN_LINK_LOSS: 2806 if (cp->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2807 break; 2808 fallthrough; 2809 2810 case HCI_AUTO_CONN_DIRECT: 2811 case HCI_AUTO_CONN_ALWAYS: 2812 list_del_init(¶ms->action); 2813 list_add(¶ms->action, &hdev->pend_le_conns); 2814 break; 2815 2816 default: 2817 break; 2818 } 2819 } 2820 2821 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2822 cp->reason, mgmt_conn); 2823 2824 hci_disconn_cfm(conn, cp->reason); 2825 2826 done: 2827 /* If the disconnection failed for any reason, the upper layer 2828 * does not retry to disconnect in current implementation. 2829 * Hence, we need to do some basic cleanup here and re-enable 2830 * advertising if necessary. 2831 */ 2832 hci_conn_del(conn); 2833 unlock: 2834 hci_dev_unlock(hdev); 2835 } 2836 2837 static u8 ev_bdaddr_type(struct hci_dev *hdev, u8 type, bool *resolved) 2838 { 2839 /* When using controller based address resolution, then the new 2840 * address types 0x02 and 0x03 are used. These types need to be 2841 * converted back into either public address or random address type 2842 */ 2843 switch (type) { 2844 case ADDR_LE_DEV_PUBLIC_RESOLVED: 2845 if (resolved) 2846 *resolved = true; 2847 return ADDR_LE_DEV_PUBLIC; 2848 case ADDR_LE_DEV_RANDOM_RESOLVED: 2849 if (resolved) 2850 *resolved = true; 2851 return ADDR_LE_DEV_RANDOM; 2852 } 2853 2854 if (resolved) 2855 *resolved = false; 2856 return type; 2857 } 2858 2859 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2860 u8 peer_addr_type, u8 own_address_type, 2861 u8 filter_policy) 2862 { 2863 struct hci_conn *conn; 2864 2865 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2866 peer_addr_type); 2867 if (!conn) 2868 return; 2869 2870 own_address_type = ev_bdaddr_type(hdev, own_address_type, NULL); 2871 2872 /* Store the initiator and responder address information which 2873 * is needed for SMP. These values will not change during the 2874 * lifetime of the connection. 2875 */ 2876 conn->init_addr_type = own_address_type; 2877 if (own_address_type == ADDR_LE_DEV_RANDOM) 2878 bacpy(&conn->init_addr, &hdev->random_addr); 2879 else 2880 bacpy(&conn->init_addr, &hdev->bdaddr); 2881 2882 conn->resp_addr_type = peer_addr_type; 2883 bacpy(&conn->resp_addr, peer_addr); 2884 2885 /* We don't want the connection attempt to stick around 2886 * indefinitely since LE doesn't have a page timeout concept 2887 * like BR/EDR. Set a timer for any connection that doesn't use 2888 * the accept list for connecting. 2889 */ 2890 if (filter_policy == HCI_LE_USE_PEER_ADDR) 2891 queue_delayed_work(conn->hdev->workqueue, 2892 &conn->le_conn_timeout, 2893 conn->conn_timeout); 2894 } 2895 2896 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2897 { 2898 struct hci_cp_le_create_conn *cp; 2899 2900 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2901 2902 /* All connection failure handling is taken care of by the 2903 * hci_conn_failed function which is triggered by the HCI 2904 * request completion callbacks used for connecting. 2905 */ 2906 if (status) 2907 return; 2908 2909 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2910 if (!cp) 2911 return; 2912 2913 hci_dev_lock(hdev); 2914 2915 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2916 cp->own_address_type, cp->filter_policy); 2917 2918 hci_dev_unlock(hdev); 2919 } 2920 2921 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2922 { 2923 struct hci_cp_le_ext_create_conn *cp; 2924 2925 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2926 2927 /* All connection failure handling is taken care of by the 2928 * hci_conn_failed function which is triggered by the HCI 2929 * request completion callbacks used for connecting. 2930 */ 2931 if (status) 2932 return; 2933 2934 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2935 if (!cp) 2936 return; 2937 2938 hci_dev_lock(hdev); 2939 2940 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2941 cp->own_addr_type, cp->filter_policy); 2942 2943 hci_dev_unlock(hdev); 2944 } 2945 2946 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2947 { 2948 struct hci_cp_le_read_remote_features *cp; 2949 struct hci_conn *conn; 2950 2951 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2952 2953 if (!status) 2954 return; 2955 2956 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2957 if (!cp) 2958 return; 2959 2960 hci_dev_lock(hdev); 2961 2962 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2963 if (conn) { 2964 if (conn->state == BT_CONFIG) { 2965 hci_connect_cfm(conn, status); 2966 hci_conn_drop(conn); 2967 } 2968 } 2969 2970 hci_dev_unlock(hdev); 2971 } 2972 2973 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2974 { 2975 struct hci_cp_le_start_enc *cp; 2976 struct hci_conn *conn; 2977 2978 bt_dev_dbg(hdev, "status 0x%2.2x", status); 2979 2980 if (!status) 2981 return; 2982 2983 hci_dev_lock(hdev); 2984 2985 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2986 if (!cp) 2987 goto unlock; 2988 2989 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2990 if (!conn) 2991 goto unlock; 2992 2993 if (conn->state != BT_CONNECTED) 2994 goto unlock; 2995 2996 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2997 hci_conn_drop(conn); 2998 2999 unlock: 3000 hci_dev_unlock(hdev); 3001 } 3002 3003 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 3004 { 3005 struct hci_cp_switch_role *cp; 3006 struct hci_conn *conn; 3007 3008 BT_DBG("%s status 0x%2.2x", hdev->name, status); 3009 3010 if (!status) 3011 return; 3012 3013 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 3014 if (!cp) 3015 return; 3016 3017 hci_dev_lock(hdev); 3018 3019 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 3020 if (conn) 3021 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 3022 3023 hci_dev_unlock(hdev); 3024 } 3025 3026 static void hci_inquiry_complete_evt(struct hci_dev *hdev, void *data, 3027 struct sk_buff *skb) 3028 { 3029 struct hci_ev_status *ev = data; 3030 struct discovery_state *discov = &hdev->discovery; 3031 struct inquiry_entry *e; 3032 3033 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3034 3035 hci_conn_check_pending(hdev); 3036 3037 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 3038 return; 3039 3040 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 3041 wake_up_bit(&hdev->flags, HCI_INQUIRY); 3042 3043 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3044 return; 3045 3046 hci_dev_lock(hdev); 3047 3048 if (discov->state != DISCOVERY_FINDING) 3049 goto unlock; 3050 3051 if (list_empty(&discov->resolve)) { 3052 /* When BR/EDR inquiry is active and no LE scanning is in 3053 * progress, then change discovery state to indicate completion. 3054 * 3055 * When running LE scanning and BR/EDR inquiry simultaneously 3056 * and the LE scan already finished, then change the discovery 3057 * state to indicate completion. 3058 */ 3059 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3060 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3061 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3062 goto unlock; 3063 } 3064 3065 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 3066 if (e && hci_resolve_name(hdev, e) == 0) { 3067 e->name_state = NAME_PENDING; 3068 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 3069 discov->name_resolve_timeout = jiffies + NAME_RESOLVE_DURATION; 3070 } else { 3071 /* When BR/EDR inquiry is active and no LE scanning is in 3072 * progress, then change discovery state to indicate completion. 3073 * 3074 * When running LE scanning and BR/EDR inquiry simultaneously 3075 * and the LE scan already finished, then change the discovery 3076 * state to indicate completion. 3077 */ 3078 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 3079 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 3080 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 3081 } 3082 3083 unlock: 3084 hci_dev_unlock(hdev); 3085 } 3086 3087 static void hci_inquiry_result_evt(struct hci_dev *hdev, void *edata, 3088 struct sk_buff *skb) 3089 { 3090 struct hci_ev_inquiry_result *ev = edata; 3091 struct inquiry_data data; 3092 int i; 3093 3094 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_INQUIRY_RESULT, 3095 flex_array_size(ev, info, ev->num))) 3096 return; 3097 3098 bt_dev_dbg(hdev, "num %d", ev->num); 3099 3100 if (!ev->num) 3101 return; 3102 3103 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 3104 return; 3105 3106 hci_dev_lock(hdev); 3107 3108 for (i = 0; i < ev->num; i++) { 3109 struct inquiry_info *info = &ev->info[i]; 3110 u32 flags; 3111 3112 bacpy(&data.bdaddr, &info->bdaddr); 3113 data.pscan_rep_mode = info->pscan_rep_mode; 3114 data.pscan_period_mode = info->pscan_period_mode; 3115 data.pscan_mode = info->pscan_mode; 3116 memcpy(data.dev_class, info->dev_class, 3); 3117 data.clock_offset = info->clock_offset; 3118 data.rssi = HCI_RSSI_INVALID; 3119 data.ssp_mode = 0x00; 3120 3121 flags = hci_inquiry_cache_update(hdev, &data, false); 3122 3123 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 3124 info->dev_class, HCI_RSSI_INVALID, 3125 flags, NULL, 0, NULL, 0, 0); 3126 } 3127 3128 hci_dev_unlock(hdev); 3129 } 3130 3131 static void hci_conn_complete_evt(struct hci_dev *hdev, void *data, 3132 struct sk_buff *skb) 3133 { 3134 struct hci_ev_conn_complete *ev = data; 3135 struct hci_conn *conn; 3136 u8 status = ev->status; 3137 3138 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3139 3140 hci_dev_lock(hdev); 3141 3142 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 3143 if (!conn) { 3144 /* In case of error status and there is no connection pending 3145 * just unlock as there is nothing to cleanup. 3146 */ 3147 if (ev->status) 3148 goto unlock; 3149 3150 /* Connection may not exist if auto-connected. Check the bredr 3151 * allowlist to see if this device is allowed to auto connect. 3152 * If link is an ACL type, create a connection class 3153 * automatically. 3154 * 3155 * Auto-connect will only occur if the event filter is 3156 * programmed with a given address. Right now, event filter is 3157 * only used during suspend. 3158 */ 3159 if (ev->link_type == ACL_LINK && 3160 hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, 3161 &ev->bdaddr, 3162 BDADDR_BREDR)) { 3163 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, 3164 HCI_ROLE_SLAVE); 3165 if (!conn) { 3166 bt_dev_err(hdev, "no memory for new conn"); 3167 goto unlock; 3168 } 3169 } else { 3170 if (ev->link_type != SCO_LINK) 3171 goto unlock; 3172 3173 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 3174 &ev->bdaddr); 3175 if (!conn) 3176 goto unlock; 3177 3178 conn->type = SCO_LINK; 3179 } 3180 } 3181 3182 /* The HCI_Connection_Complete event is only sent once per connection. 3183 * Processing it more than once per connection can corrupt kernel memory. 3184 * 3185 * As the connection handle is set here for the first time, it indicates 3186 * whether the connection is already set up. 3187 */ 3188 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 3189 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 3190 goto unlock; 3191 } 3192 3193 if (!status) { 3194 conn->handle = __le16_to_cpu(ev->handle); 3195 if (conn->handle > HCI_CONN_HANDLE_MAX) { 3196 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", 3197 conn->handle, HCI_CONN_HANDLE_MAX); 3198 status = HCI_ERROR_INVALID_PARAMETERS; 3199 goto done; 3200 } 3201 3202 if (conn->type == ACL_LINK) { 3203 conn->state = BT_CONFIG; 3204 hci_conn_hold(conn); 3205 3206 if (!conn->out && !hci_conn_ssp_enabled(conn) && 3207 !hci_find_link_key(hdev, &ev->bdaddr)) 3208 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3209 else 3210 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3211 } else 3212 conn->state = BT_CONNECTED; 3213 3214 hci_debugfs_create_conn(conn); 3215 hci_conn_add_sysfs(conn); 3216 3217 if (test_bit(HCI_AUTH, &hdev->flags)) 3218 set_bit(HCI_CONN_AUTH, &conn->flags); 3219 3220 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 3221 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3222 3223 /* Get remote features */ 3224 if (conn->type == ACL_LINK) { 3225 struct hci_cp_read_remote_features cp; 3226 cp.handle = ev->handle; 3227 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 3228 sizeof(cp), &cp); 3229 3230 hci_update_scan(hdev); 3231 } 3232 3233 /* Set packet type for incoming connection */ 3234 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 3235 struct hci_cp_change_conn_ptype cp; 3236 cp.handle = ev->handle; 3237 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3238 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 3239 &cp); 3240 } 3241 } 3242 3243 if (conn->type == ACL_LINK) 3244 hci_sco_setup(conn, ev->status); 3245 3246 done: 3247 if (status) { 3248 hci_conn_failed(conn, status); 3249 } else if (ev->link_type == SCO_LINK) { 3250 switch (conn->setting & SCO_AIRMODE_MASK) { 3251 case SCO_AIRMODE_CVSD: 3252 if (hdev->notify) 3253 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 3254 break; 3255 } 3256 3257 hci_connect_cfm(conn, status); 3258 } 3259 3260 unlock: 3261 hci_dev_unlock(hdev); 3262 3263 hci_conn_check_pending(hdev); 3264 } 3265 3266 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 3267 { 3268 struct hci_cp_reject_conn_req cp; 3269 3270 bacpy(&cp.bdaddr, bdaddr); 3271 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 3272 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 3273 } 3274 3275 static void hci_conn_request_evt(struct hci_dev *hdev, void *data, 3276 struct sk_buff *skb) 3277 { 3278 struct hci_ev_conn_request *ev = data; 3279 int mask = hdev->link_mode; 3280 struct inquiry_entry *ie; 3281 struct hci_conn *conn; 3282 __u8 flags = 0; 3283 3284 bt_dev_dbg(hdev, "bdaddr %pMR type 0x%x", &ev->bdaddr, ev->link_type); 3285 3286 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 3287 &flags); 3288 3289 if (!(mask & HCI_LM_ACCEPT)) { 3290 hci_reject_conn(hdev, &ev->bdaddr); 3291 return; 3292 } 3293 3294 hci_dev_lock(hdev); 3295 3296 if (hci_bdaddr_list_lookup(&hdev->reject_list, &ev->bdaddr, 3297 BDADDR_BREDR)) { 3298 hci_reject_conn(hdev, &ev->bdaddr); 3299 goto unlock; 3300 } 3301 3302 /* Require HCI_CONNECTABLE or an accept list entry to accept the 3303 * connection. These features are only touched through mgmt so 3304 * only do the checks if HCI_MGMT is set. 3305 */ 3306 if (hci_dev_test_flag(hdev, HCI_MGMT) && 3307 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 3308 !hci_bdaddr_list_lookup_with_flags(&hdev->accept_list, &ev->bdaddr, 3309 BDADDR_BREDR)) { 3310 hci_reject_conn(hdev, &ev->bdaddr); 3311 goto unlock; 3312 } 3313 3314 /* Connection accepted */ 3315 3316 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 3317 if (ie) 3318 memcpy(ie->data.dev_class, ev->dev_class, 3); 3319 3320 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 3321 &ev->bdaddr); 3322 if (!conn) { 3323 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, 3324 HCI_ROLE_SLAVE); 3325 if (!conn) { 3326 bt_dev_err(hdev, "no memory for new connection"); 3327 goto unlock; 3328 } 3329 } 3330 3331 memcpy(conn->dev_class, ev->dev_class, 3); 3332 3333 hci_dev_unlock(hdev); 3334 3335 if (ev->link_type == ACL_LINK || 3336 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 3337 struct hci_cp_accept_conn_req cp; 3338 conn->state = BT_CONNECT; 3339 3340 bacpy(&cp.bdaddr, &ev->bdaddr); 3341 3342 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 3343 cp.role = 0x00; /* Become central */ 3344 else 3345 cp.role = 0x01; /* Remain peripheral */ 3346 3347 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 3348 } else if (!(flags & HCI_PROTO_DEFER)) { 3349 struct hci_cp_accept_sync_conn_req cp; 3350 conn->state = BT_CONNECT; 3351 3352 bacpy(&cp.bdaddr, &ev->bdaddr); 3353 cp.pkt_type = cpu_to_le16(conn->pkt_type); 3354 3355 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 3356 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 3357 cp.max_latency = cpu_to_le16(0xffff); 3358 cp.content_format = cpu_to_le16(hdev->voice_setting); 3359 cp.retrans_effort = 0xff; 3360 3361 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 3362 &cp); 3363 } else { 3364 conn->state = BT_CONNECT2; 3365 hci_connect_cfm(conn, 0); 3366 } 3367 3368 return; 3369 unlock: 3370 hci_dev_unlock(hdev); 3371 } 3372 3373 static u8 hci_to_mgmt_reason(u8 err) 3374 { 3375 switch (err) { 3376 case HCI_ERROR_CONNECTION_TIMEOUT: 3377 return MGMT_DEV_DISCONN_TIMEOUT; 3378 case HCI_ERROR_REMOTE_USER_TERM: 3379 case HCI_ERROR_REMOTE_LOW_RESOURCES: 3380 case HCI_ERROR_REMOTE_POWER_OFF: 3381 return MGMT_DEV_DISCONN_REMOTE; 3382 case HCI_ERROR_LOCAL_HOST_TERM: 3383 return MGMT_DEV_DISCONN_LOCAL_HOST; 3384 default: 3385 return MGMT_DEV_DISCONN_UNKNOWN; 3386 } 3387 } 3388 3389 static void hci_disconn_complete_evt(struct hci_dev *hdev, void *data, 3390 struct sk_buff *skb) 3391 { 3392 struct hci_ev_disconn_complete *ev = data; 3393 u8 reason; 3394 struct hci_conn_params *params; 3395 struct hci_conn *conn; 3396 bool mgmt_connected; 3397 3398 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3399 3400 hci_dev_lock(hdev); 3401 3402 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3403 if (!conn) 3404 goto unlock; 3405 3406 if (ev->status) { 3407 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 3408 conn->dst_type, ev->status); 3409 goto unlock; 3410 } 3411 3412 conn->state = BT_CLOSED; 3413 3414 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 3415 3416 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 3417 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 3418 else 3419 reason = hci_to_mgmt_reason(ev->reason); 3420 3421 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 3422 reason, mgmt_connected); 3423 3424 if (conn->type == ACL_LINK) { 3425 if (test_and_clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3426 hci_remove_link_key(hdev, &conn->dst); 3427 3428 hci_update_scan(hdev); 3429 } 3430 3431 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 3432 if (params) { 3433 switch (params->auto_connect) { 3434 case HCI_AUTO_CONN_LINK_LOSS: 3435 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 3436 break; 3437 fallthrough; 3438 3439 case HCI_AUTO_CONN_DIRECT: 3440 case HCI_AUTO_CONN_ALWAYS: 3441 list_del_init(¶ms->action); 3442 list_add(¶ms->action, &hdev->pend_le_conns); 3443 hci_update_passive_scan(hdev); 3444 break; 3445 3446 default: 3447 break; 3448 } 3449 } 3450 3451 hci_disconn_cfm(conn, ev->reason); 3452 3453 /* Re-enable advertising if necessary, since it might 3454 * have been disabled by the connection. From the 3455 * HCI_LE_Set_Advertise_Enable command description in 3456 * the core specification (v4.0): 3457 * "The Controller shall continue advertising until the Host 3458 * issues an LE_Set_Advertise_Enable command with 3459 * Advertising_Enable set to 0x00 (Advertising is disabled) 3460 * or until a connection is created or until the Advertising 3461 * is timed out due to Directed Advertising." 3462 */ 3463 if (conn->type == LE_LINK && conn->role == HCI_ROLE_SLAVE) { 3464 hdev->cur_adv_instance = conn->adv_instance; 3465 hci_enable_advertising(hdev); 3466 } 3467 3468 hci_conn_del(conn); 3469 3470 unlock: 3471 hci_dev_unlock(hdev); 3472 } 3473 3474 static void hci_auth_complete_evt(struct hci_dev *hdev, void *data, 3475 struct sk_buff *skb) 3476 { 3477 struct hci_ev_auth_complete *ev = data; 3478 struct hci_conn *conn; 3479 3480 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3481 3482 hci_dev_lock(hdev); 3483 3484 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3485 if (!conn) 3486 goto unlock; 3487 3488 if (!ev->status) { 3489 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3490 3491 if (!hci_conn_ssp_enabled(conn) && 3492 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) { 3493 bt_dev_info(hdev, "re-auth of legacy device is not possible."); 3494 } else { 3495 set_bit(HCI_CONN_AUTH, &conn->flags); 3496 conn->sec_level = conn->pending_sec_level; 3497 } 3498 } else { 3499 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3500 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3501 3502 mgmt_auth_failed(conn, ev->status); 3503 } 3504 3505 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3506 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags); 3507 3508 if (conn->state == BT_CONFIG) { 3509 if (!ev->status && hci_conn_ssp_enabled(conn)) { 3510 struct hci_cp_set_conn_encrypt cp; 3511 cp.handle = ev->handle; 3512 cp.encrypt = 0x01; 3513 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3514 &cp); 3515 } else { 3516 conn->state = BT_CONNECTED; 3517 hci_connect_cfm(conn, ev->status); 3518 hci_conn_drop(conn); 3519 } 3520 } else { 3521 hci_auth_cfm(conn, ev->status); 3522 3523 hci_conn_hold(conn); 3524 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 3525 hci_conn_drop(conn); 3526 } 3527 3528 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 3529 if (!ev->status) { 3530 struct hci_cp_set_conn_encrypt cp; 3531 cp.handle = ev->handle; 3532 cp.encrypt = 0x01; 3533 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 3534 &cp); 3535 } else { 3536 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3537 hci_encrypt_cfm(conn, ev->status); 3538 } 3539 } 3540 3541 unlock: 3542 hci_dev_unlock(hdev); 3543 } 3544 3545 static void hci_remote_name_evt(struct hci_dev *hdev, void *data, 3546 struct sk_buff *skb) 3547 { 3548 struct hci_ev_remote_name *ev = data; 3549 struct hci_conn *conn; 3550 3551 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3552 3553 hci_conn_check_pending(hdev); 3554 3555 hci_dev_lock(hdev); 3556 3557 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3558 3559 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3560 goto check_auth; 3561 3562 if (ev->status == 0) 3563 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 3564 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 3565 else 3566 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 3567 3568 check_auth: 3569 if (!conn) 3570 goto unlock; 3571 3572 if (!hci_outgoing_auth_needed(hdev, conn)) 3573 goto unlock; 3574 3575 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 3576 struct hci_cp_auth_requested cp; 3577 3578 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 3579 3580 cp.handle = __cpu_to_le16(conn->handle); 3581 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 3582 } 3583 3584 unlock: 3585 hci_dev_unlock(hdev); 3586 } 3587 3588 static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data, 3589 struct sk_buff *skb) 3590 { 3591 struct hci_ev_encrypt_change *ev = data; 3592 struct hci_conn *conn; 3593 3594 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3595 3596 hci_dev_lock(hdev); 3597 3598 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3599 if (!conn) 3600 goto unlock; 3601 3602 if (!ev->status) { 3603 if (ev->encrypt) { 3604 /* Encryption implies authentication */ 3605 set_bit(HCI_CONN_AUTH, &conn->flags); 3606 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3607 conn->sec_level = conn->pending_sec_level; 3608 3609 /* P-256 authentication key implies FIPS */ 3610 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3611 set_bit(HCI_CONN_FIPS, &conn->flags); 3612 3613 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3614 conn->type == LE_LINK) 3615 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3616 } else { 3617 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3618 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3619 } 3620 } 3621 3622 /* We should disregard the current RPA and generate a new one 3623 * whenever the encryption procedure fails. 3624 */ 3625 if (ev->status && conn->type == LE_LINK) { 3626 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3627 hci_adv_instances_set_rpa_expired(hdev, true); 3628 } 3629 3630 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3631 3632 /* Check link security requirements are met */ 3633 if (!hci_conn_check_link_mode(conn)) 3634 ev->status = HCI_ERROR_AUTH_FAILURE; 3635 3636 if (ev->status && conn->state == BT_CONNECTED) { 3637 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3638 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3639 3640 /* Notify upper layers so they can cleanup before 3641 * disconnecting. 3642 */ 3643 hci_encrypt_cfm(conn, ev->status); 3644 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3645 hci_conn_drop(conn); 3646 goto unlock; 3647 } 3648 3649 /* Try reading the encryption key size for encrypted ACL links */ 3650 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3651 struct hci_cp_read_enc_key_size cp; 3652 3653 /* Only send HCI_Read_Encryption_Key_Size if the 3654 * controller really supports it. If it doesn't, assume 3655 * the default size (16). 3656 */ 3657 if (!(hdev->commands[20] & 0x10)) { 3658 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3659 goto notify; 3660 } 3661 3662 cp.handle = cpu_to_le16(conn->handle); 3663 if (hci_send_cmd(hdev, HCI_OP_READ_ENC_KEY_SIZE, 3664 sizeof(cp), &cp)) { 3665 bt_dev_err(hdev, "sending read key size failed"); 3666 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3667 goto notify; 3668 } 3669 3670 goto unlock; 3671 } 3672 3673 /* Set the default Authenticated Payload Timeout after 3674 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3675 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3676 * sent when the link is active and Encryption is enabled, the conn 3677 * type can be either LE or ACL and controller must support LMP Ping. 3678 * Ensure for AES-CCM encryption as well. 3679 */ 3680 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3681 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3682 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3683 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3684 struct hci_cp_write_auth_payload_to cp; 3685 3686 cp.handle = cpu_to_le16(conn->handle); 3687 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3688 if (hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3689 sizeof(cp), &cp)) { 3690 bt_dev_err(hdev, "write auth payload timeout failed"); 3691 goto notify; 3692 } 3693 3694 goto unlock; 3695 } 3696 3697 notify: 3698 hci_encrypt_cfm(conn, ev->status); 3699 3700 unlock: 3701 hci_dev_unlock(hdev); 3702 } 3703 3704 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, void *data, 3705 struct sk_buff *skb) 3706 { 3707 struct hci_ev_change_link_key_complete *ev = data; 3708 struct hci_conn *conn; 3709 3710 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3711 3712 hci_dev_lock(hdev); 3713 3714 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3715 if (conn) { 3716 if (!ev->status) 3717 set_bit(HCI_CONN_SECURE, &conn->flags); 3718 3719 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3720 3721 hci_key_change_cfm(conn, ev->status); 3722 } 3723 3724 hci_dev_unlock(hdev); 3725 } 3726 3727 static void hci_remote_features_evt(struct hci_dev *hdev, void *data, 3728 struct sk_buff *skb) 3729 { 3730 struct hci_ev_remote_features *ev = data; 3731 struct hci_conn *conn; 3732 3733 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 3734 3735 hci_dev_lock(hdev); 3736 3737 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3738 if (!conn) 3739 goto unlock; 3740 3741 if (!ev->status) 3742 memcpy(conn->features[0], ev->features, 8); 3743 3744 if (conn->state != BT_CONFIG) 3745 goto unlock; 3746 3747 if (!ev->status && lmp_ext_feat_capable(hdev) && 3748 lmp_ext_feat_capable(conn)) { 3749 struct hci_cp_read_remote_ext_features cp; 3750 cp.handle = ev->handle; 3751 cp.page = 0x01; 3752 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3753 sizeof(cp), &cp); 3754 goto unlock; 3755 } 3756 3757 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 3758 struct hci_cp_remote_name_req cp; 3759 memset(&cp, 0, sizeof(cp)); 3760 bacpy(&cp.bdaddr, &conn->dst); 3761 cp.pscan_rep_mode = 0x02; 3762 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3763 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 3764 mgmt_device_connected(hdev, conn, NULL, 0); 3765 3766 if (!hci_outgoing_auth_needed(hdev, conn)) { 3767 conn->state = BT_CONNECTED; 3768 hci_connect_cfm(conn, ev->status); 3769 hci_conn_drop(conn); 3770 } 3771 3772 unlock: 3773 hci_dev_unlock(hdev); 3774 } 3775 3776 static inline void handle_cmd_cnt_and_timer(struct hci_dev *hdev, u8 ncmd) 3777 { 3778 cancel_delayed_work(&hdev->cmd_timer); 3779 3780 rcu_read_lock(); 3781 if (!test_bit(HCI_RESET, &hdev->flags)) { 3782 if (ncmd) { 3783 cancel_delayed_work(&hdev->ncmd_timer); 3784 atomic_set(&hdev->cmd_cnt, 1); 3785 } else { 3786 if (!hci_dev_test_flag(hdev, HCI_CMD_DRAIN_WORKQUEUE)) 3787 queue_delayed_work(hdev->workqueue, &hdev->ncmd_timer, 3788 HCI_NCMD_TIMEOUT); 3789 } 3790 } 3791 rcu_read_unlock(); 3792 } 3793 3794 static u8 hci_cc_le_read_buffer_size_v2(struct hci_dev *hdev, void *data, 3795 struct sk_buff *skb) 3796 { 3797 struct hci_rp_le_read_buffer_size_v2 *rp = data; 3798 3799 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3800 3801 if (rp->status) 3802 return rp->status; 3803 3804 hdev->le_mtu = __le16_to_cpu(rp->acl_mtu); 3805 hdev->le_pkts = rp->acl_max_pkt; 3806 hdev->iso_mtu = __le16_to_cpu(rp->iso_mtu); 3807 hdev->iso_pkts = rp->iso_max_pkt; 3808 3809 hdev->le_cnt = hdev->le_pkts; 3810 hdev->iso_cnt = hdev->iso_pkts; 3811 3812 BT_DBG("%s acl mtu %d:%d iso mtu %d:%d", hdev->name, hdev->acl_mtu, 3813 hdev->acl_pkts, hdev->iso_mtu, hdev->iso_pkts); 3814 3815 return rp->status; 3816 } 3817 3818 static u8 hci_cc_le_set_cig_params(struct hci_dev *hdev, void *data, 3819 struct sk_buff *skb) 3820 { 3821 struct hci_rp_le_set_cig_params *rp = data; 3822 struct hci_conn *conn; 3823 int i = 0; 3824 3825 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3826 3827 hci_dev_lock(hdev); 3828 3829 if (rp->status) { 3830 while ((conn = hci_conn_hash_lookup_cig(hdev, rp->cig_id))) { 3831 conn->state = BT_CLOSED; 3832 hci_connect_cfm(conn, rp->status); 3833 hci_conn_del(conn); 3834 } 3835 goto unlock; 3836 } 3837 3838 rcu_read_lock(); 3839 3840 list_for_each_entry_rcu(conn, &hdev->conn_hash.list, list) { 3841 if (conn->type != ISO_LINK || conn->iso_qos.cig != rp->cig_id || 3842 conn->state == BT_CONNECTED) 3843 continue; 3844 3845 conn->handle = __le16_to_cpu(rp->handle[i++]); 3846 3847 bt_dev_dbg(hdev, "%p handle 0x%4.4x link %p", conn, 3848 conn->handle, conn->link); 3849 3850 /* Create CIS if LE is already connected */ 3851 if (conn->link && conn->link->state == BT_CONNECTED) { 3852 rcu_read_unlock(); 3853 hci_le_create_cis(conn->link); 3854 rcu_read_lock(); 3855 } 3856 3857 if (i == rp->num_handles) 3858 break; 3859 } 3860 3861 rcu_read_unlock(); 3862 3863 unlock: 3864 hci_dev_unlock(hdev); 3865 3866 return rp->status; 3867 } 3868 3869 static u8 hci_cc_le_setup_iso_path(struct hci_dev *hdev, void *data, 3870 struct sk_buff *skb) 3871 { 3872 struct hci_rp_le_setup_iso_path *rp = data; 3873 struct hci_cp_le_setup_iso_path *cp; 3874 struct hci_conn *conn; 3875 3876 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3877 3878 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SETUP_ISO_PATH); 3879 if (!cp) 3880 return rp->status; 3881 3882 hci_dev_lock(hdev); 3883 3884 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 3885 if (!conn) 3886 goto unlock; 3887 3888 if (rp->status) { 3889 hci_connect_cfm(conn, rp->status); 3890 hci_conn_del(conn); 3891 goto unlock; 3892 } 3893 3894 switch (cp->direction) { 3895 /* Input (Host to Controller) */ 3896 case 0x00: 3897 /* Only confirm connection if output only */ 3898 if (conn->iso_qos.out.sdu && !conn->iso_qos.in.sdu) 3899 hci_connect_cfm(conn, rp->status); 3900 break; 3901 /* Output (Controller to Host) */ 3902 case 0x01: 3903 /* Confirm connection since conn->iso_qos is always configured 3904 * last. 3905 */ 3906 hci_connect_cfm(conn, rp->status); 3907 break; 3908 } 3909 3910 unlock: 3911 hci_dev_unlock(hdev); 3912 return rp->status; 3913 } 3914 3915 static void hci_cs_le_create_big(struct hci_dev *hdev, u8 status) 3916 { 3917 bt_dev_dbg(hdev, "status 0x%2.2x", status); 3918 } 3919 3920 static u8 hci_cc_set_per_adv_param(struct hci_dev *hdev, void *data, 3921 struct sk_buff *skb) 3922 { 3923 struct hci_ev_status *rp = data; 3924 struct hci_cp_le_set_per_adv_params *cp; 3925 3926 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3927 3928 if (rp->status) 3929 return rp->status; 3930 3931 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_PARAMS); 3932 if (!cp) 3933 return rp->status; 3934 3935 /* TODO: set the conn state */ 3936 return rp->status; 3937 } 3938 3939 static u8 hci_cc_le_set_per_adv_enable(struct hci_dev *hdev, void *data, 3940 struct sk_buff *skb) 3941 { 3942 struct hci_ev_status *rp = data; 3943 __u8 *sent; 3944 3945 bt_dev_dbg(hdev, "status 0x%2.2x", rp->status); 3946 3947 if (rp->status) 3948 return rp->status; 3949 3950 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_PER_ADV_ENABLE); 3951 if (!sent) 3952 return rp->status; 3953 3954 hci_dev_lock(hdev); 3955 3956 if (*sent) 3957 hci_dev_set_flag(hdev, HCI_LE_PER_ADV); 3958 else 3959 hci_dev_clear_flag(hdev, HCI_LE_PER_ADV); 3960 3961 hci_dev_unlock(hdev); 3962 3963 return rp->status; 3964 } 3965 3966 #define HCI_CC_VL(_op, _func, _min, _max) \ 3967 { \ 3968 .op = _op, \ 3969 .func = _func, \ 3970 .min_len = _min, \ 3971 .max_len = _max, \ 3972 } 3973 3974 #define HCI_CC(_op, _func, _len) \ 3975 HCI_CC_VL(_op, _func, _len, _len) 3976 3977 #define HCI_CC_STATUS(_op, _func) \ 3978 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 3979 3980 static const struct hci_cc { 3981 u16 op; 3982 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 3983 u16 min_len; 3984 u16 max_len; 3985 } hci_cc_table[] = { 3986 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 3987 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 3988 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 3989 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 3990 hci_cc_remote_name_req_cancel), 3991 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 3992 sizeof(struct hci_rp_role_discovery)), 3993 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 3994 sizeof(struct hci_rp_read_link_policy)), 3995 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 3996 sizeof(struct hci_rp_write_link_policy)), 3997 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 3998 sizeof(struct hci_rp_read_def_link_policy)), 3999 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 4000 hci_cc_write_def_link_policy), 4001 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 4002 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 4003 sizeof(struct hci_rp_read_stored_link_key)), 4004 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 4005 sizeof(struct hci_rp_delete_stored_link_key)), 4006 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 4007 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 4008 sizeof(struct hci_rp_read_local_name)), 4009 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 4010 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 4011 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 4012 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 4013 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 4014 sizeof(struct hci_rp_read_class_of_dev)), 4015 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 4016 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 4017 sizeof(struct hci_rp_read_voice_setting)), 4018 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 4019 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 4020 sizeof(struct hci_rp_read_num_supported_iac)), 4021 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 4022 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 4023 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 4024 sizeof(struct hci_rp_read_auth_payload_to)), 4025 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 4026 sizeof(struct hci_rp_write_auth_payload_to)), 4027 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 4028 sizeof(struct hci_rp_read_local_version)), 4029 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 4030 sizeof(struct hci_rp_read_local_commands)), 4031 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 4032 sizeof(struct hci_rp_read_local_features)), 4033 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 4034 sizeof(struct hci_rp_read_local_ext_features)), 4035 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 4036 sizeof(struct hci_rp_read_buffer_size)), 4037 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 4038 sizeof(struct hci_rp_read_bd_addr)), 4039 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 4040 sizeof(struct hci_rp_read_local_pairing_opts)), 4041 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 4042 sizeof(struct hci_rp_read_page_scan_activity)), 4043 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 4044 hci_cc_write_page_scan_activity), 4045 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 4046 sizeof(struct hci_rp_read_page_scan_type)), 4047 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 4048 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size, 4049 sizeof(struct hci_rp_read_data_block_size)), 4050 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode, 4051 sizeof(struct hci_rp_read_flow_control_mode)), 4052 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info, 4053 sizeof(struct hci_rp_read_local_amp_info)), 4054 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 4055 sizeof(struct hci_rp_read_clock)), 4056 HCI_CC(HCI_OP_READ_ENC_KEY_SIZE, hci_cc_read_enc_key_size, 4057 sizeof(struct hci_rp_read_enc_key_size)), 4058 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 4059 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 4060 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 4061 hci_cc_read_def_err_data_reporting, 4062 sizeof(struct hci_rp_read_def_err_data_reporting)), 4063 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 4064 hci_cc_write_def_err_data_reporting), 4065 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 4066 sizeof(struct hci_rp_pin_code_reply)), 4067 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 4068 sizeof(struct hci_rp_pin_code_neg_reply)), 4069 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 4070 sizeof(struct hci_rp_read_local_oob_data)), 4071 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 4072 sizeof(struct hci_rp_read_local_oob_ext_data)), 4073 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 4074 sizeof(struct hci_rp_le_read_buffer_size)), 4075 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 4076 sizeof(struct hci_rp_le_read_local_features)), 4077 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 4078 sizeof(struct hci_rp_le_read_adv_tx_power)), 4079 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 4080 sizeof(struct hci_rp_user_confirm_reply)), 4081 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 4082 sizeof(struct hci_rp_user_confirm_reply)), 4083 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 4084 sizeof(struct hci_rp_user_confirm_reply)), 4085 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 4086 sizeof(struct hci_rp_user_confirm_reply)), 4087 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 4088 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 4089 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 4090 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 4091 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 4092 hci_cc_le_read_accept_list_size, 4093 sizeof(struct hci_rp_le_read_accept_list_size)), 4094 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 4095 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 4096 hci_cc_le_add_to_accept_list), 4097 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 4098 hci_cc_le_del_from_accept_list), 4099 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 4100 sizeof(struct hci_rp_le_read_supported_states)), 4101 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 4102 sizeof(struct hci_rp_le_read_def_data_len)), 4103 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 4104 hci_cc_le_write_def_data_len), 4105 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 4106 hci_cc_le_add_to_resolv_list), 4107 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 4108 hci_cc_le_del_from_resolv_list), 4109 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 4110 hci_cc_le_clear_resolv_list), 4111 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 4112 sizeof(struct hci_rp_le_read_resolv_list_size)), 4113 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 4114 hci_cc_le_set_addr_resolution_enable), 4115 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 4116 sizeof(struct hci_rp_le_read_max_data_len)), 4117 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 4118 hci_cc_write_le_host_supported), 4119 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 4120 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 4121 sizeof(struct hci_rp_read_rssi)), 4122 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 4123 sizeof(struct hci_rp_read_tx_power)), 4124 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 4125 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 4126 hci_cc_le_set_ext_scan_param), 4127 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 4128 hci_cc_le_set_ext_scan_enable), 4129 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 4130 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 4131 hci_cc_le_read_num_adv_sets, 4132 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 4133 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 4134 sizeof(struct hci_rp_le_set_ext_adv_params)), 4135 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 4136 hci_cc_le_set_ext_adv_enable), 4137 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 4138 hci_cc_le_set_adv_set_random_addr), 4139 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 4140 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 4141 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_PARAMS, hci_cc_set_per_adv_param), 4142 HCI_CC_STATUS(HCI_OP_LE_SET_PER_ADV_ENABLE, 4143 hci_cc_le_set_per_adv_enable), 4144 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 4145 sizeof(struct hci_rp_le_read_transmit_power)), 4146 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode), 4147 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE_V2, hci_cc_le_read_buffer_size_v2, 4148 sizeof(struct hci_rp_le_read_buffer_size_v2)), 4149 HCI_CC_VL(HCI_OP_LE_SET_CIG_PARAMS, hci_cc_le_set_cig_params, 4150 sizeof(struct hci_rp_le_set_cig_params), HCI_MAX_EVENT_SIZE), 4151 HCI_CC(HCI_OP_LE_SETUP_ISO_PATH, hci_cc_le_setup_iso_path, 4152 sizeof(struct hci_rp_le_setup_iso_path)), 4153 }; 4154 4155 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 4156 struct sk_buff *skb) 4157 { 4158 void *data; 4159 4160 if (skb->len < cc->min_len) { 4161 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 4162 cc->op, skb->len, cc->min_len); 4163 return HCI_ERROR_UNSPECIFIED; 4164 } 4165 4166 /* Just warn if the length is over max_len size it still be possible to 4167 * partially parse the cc so leave to callback to decide if that is 4168 * acceptable. 4169 */ 4170 if (skb->len > cc->max_len) 4171 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 4172 cc->op, skb->len, cc->max_len); 4173 4174 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 4175 if (!data) 4176 return HCI_ERROR_UNSPECIFIED; 4177 4178 return cc->func(hdev, data, skb); 4179 } 4180 4181 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 4182 struct sk_buff *skb, u16 *opcode, u8 *status, 4183 hci_req_complete_t *req_complete, 4184 hci_req_complete_skb_t *req_complete_skb) 4185 { 4186 struct hci_ev_cmd_complete *ev = data; 4187 int i; 4188 4189 *opcode = __le16_to_cpu(ev->opcode); 4190 4191 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4192 4193 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 4194 if (hci_cc_table[i].op == *opcode) { 4195 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 4196 break; 4197 } 4198 } 4199 4200 if (i == ARRAY_SIZE(hci_cc_table)) { 4201 /* Unknown opcode, assume byte 0 contains the status, so 4202 * that e.g. __hci_cmd_sync() properly returns errors 4203 * for vendor specific commands send by HCI drivers. 4204 * If a vendor doesn't actually follow this convention we may 4205 * need to introduce a vendor CC table in order to properly set 4206 * the status. 4207 */ 4208 *status = skb->data[0]; 4209 } 4210 4211 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4212 4213 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4214 req_complete_skb); 4215 4216 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4217 bt_dev_err(hdev, 4218 "unexpected event for opcode 0x%4.4x", *opcode); 4219 return; 4220 } 4221 4222 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4223 queue_work(hdev->workqueue, &hdev->cmd_work); 4224 } 4225 4226 static void hci_cs_le_create_cis(struct hci_dev *hdev, u8 status) 4227 { 4228 struct hci_cp_le_create_cis *cp; 4229 int i; 4230 4231 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4232 4233 if (!status) 4234 return; 4235 4236 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CIS); 4237 if (!cp) 4238 return; 4239 4240 hci_dev_lock(hdev); 4241 4242 /* Remove connection if command failed */ 4243 for (i = 0; cp->num_cis; cp->num_cis--, i++) { 4244 struct hci_conn *conn; 4245 u16 handle; 4246 4247 handle = __le16_to_cpu(cp->cis[i].cis_handle); 4248 4249 conn = hci_conn_hash_lookup_handle(hdev, handle); 4250 if (conn) { 4251 conn->state = BT_CLOSED; 4252 hci_connect_cfm(conn, status); 4253 hci_conn_del(conn); 4254 } 4255 } 4256 4257 hci_dev_unlock(hdev); 4258 } 4259 4260 #define HCI_CS(_op, _func) \ 4261 { \ 4262 .op = _op, \ 4263 .func = _func, \ 4264 } 4265 4266 static const struct hci_cs { 4267 u16 op; 4268 void (*func)(struct hci_dev *hdev, __u8 status); 4269 } hci_cs_table[] = { 4270 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4271 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4272 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4273 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4274 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4275 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4276 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4277 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4278 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4279 hci_cs_read_remote_ext_features), 4280 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4281 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4282 hci_cs_enhanced_setup_sync_conn), 4283 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4284 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4285 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4286 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4287 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4288 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4289 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn), 4290 HCI_CS(HCI_OP_LE_CREATE_CIS, hci_cs_le_create_cis), 4291 HCI_CS(HCI_OP_LE_CREATE_BIG, hci_cs_le_create_big), 4292 }; 4293 4294 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4295 struct sk_buff *skb, u16 *opcode, u8 *status, 4296 hci_req_complete_t *req_complete, 4297 hci_req_complete_skb_t *req_complete_skb) 4298 { 4299 struct hci_ev_cmd_status *ev = data; 4300 int i; 4301 4302 *opcode = __le16_to_cpu(ev->opcode); 4303 *status = ev->status; 4304 4305 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4306 4307 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4308 if (hci_cs_table[i].op == *opcode) { 4309 hci_cs_table[i].func(hdev, ev->status); 4310 break; 4311 } 4312 } 4313 4314 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4315 4316 /* Indicate request completion if the command failed. Also, if 4317 * we're not waiting for a special event and we get a success 4318 * command status we should try to flag the request as completed 4319 * (since for this kind of commands there will not be a command 4320 * complete event). 4321 */ 4322 if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) { 4323 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4324 req_complete_skb); 4325 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4326 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4327 *opcode); 4328 return; 4329 } 4330 } 4331 4332 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4333 queue_work(hdev->workqueue, &hdev->cmd_work); 4334 } 4335 4336 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4337 struct sk_buff *skb) 4338 { 4339 struct hci_ev_hardware_error *ev = data; 4340 4341 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4342 4343 hdev->hw_error_code = ev->code; 4344 4345 queue_work(hdev->req_workqueue, &hdev->error_reset); 4346 } 4347 4348 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4349 struct sk_buff *skb) 4350 { 4351 struct hci_ev_role_change *ev = data; 4352 struct hci_conn *conn; 4353 4354 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4355 4356 hci_dev_lock(hdev); 4357 4358 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4359 if (conn) { 4360 if (!ev->status) 4361 conn->role = ev->role; 4362 4363 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4364 4365 hci_role_switch_cfm(conn, ev->status, ev->role); 4366 } 4367 4368 hci_dev_unlock(hdev); 4369 } 4370 4371 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4372 struct sk_buff *skb) 4373 { 4374 struct hci_ev_num_comp_pkts *ev = data; 4375 int i; 4376 4377 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4378 flex_array_size(ev, handles, ev->num))) 4379 return; 4380 4381 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) { 4382 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode); 4383 return; 4384 } 4385 4386 bt_dev_dbg(hdev, "num %d", ev->num); 4387 4388 for (i = 0; i < ev->num; i++) { 4389 struct hci_comp_pkts_info *info = &ev->handles[i]; 4390 struct hci_conn *conn; 4391 __u16 handle, count; 4392 4393 handle = __le16_to_cpu(info->handle); 4394 count = __le16_to_cpu(info->count); 4395 4396 conn = hci_conn_hash_lookup_handle(hdev, handle); 4397 if (!conn) 4398 continue; 4399 4400 conn->sent -= count; 4401 4402 switch (conn->type) { 4403 case ACL_LINK: 4404 hdev->acl_cnt += count; 4405 if (hdev->acl_cnt > hdev->acl_pkts) 4406 hdev->acl_cnt = hdev->acl_pkts; 4407 break; 4408 4409 case LE_LINK: 4410 if (hdev->le_pkts) { 4411 hdev->le_cnt += count; 4412 if (hdev->le_cnt > hdev->le_pkts) 4413 hdev->le_cnt = hdev->le_pkts; 4414 } else { 4415 hdev->acl_cnt += count; 4416 if (hdev->acl_cnt > hdev->acl_pkts) 4417 hdev->acl_cnt = hdev->acl_pkts; 4418 } 4419 break; 4420 4421 case SCO_LINK: 4422 hdev->sco_cnt += count; 4423 if (hdev->sco_cnt > hdev->sco_pkts) 4424 hdev->sco_cnt = hdev->sco_pkts; 4425 break; 4426 4427 case ISO_LINK: 4428 if (hdev->iso_pkts) { 4429 hdev->iso_cnt += count; 4430 if (hdev->iso_cnt > hdev->iso_pkts) 4431 hdev->iso_cnt = hdev->iso_pkts; 4432 } else if (hdev->le_pkts) { 4433 hdev->le_cnt += count; 4434 if (hdev->le_cnt > hdev->le_pkts) 4435 hdev->le_cnt = hdev->le_pkts; 4436 } else { 4437 hdev->acl_cnt += count; 4438 if (hdev->acl_cnt > hdev->acl_pkts) 4439 hdev->acl_cnt = hdev->acl_pkts; 4440 } 4441 break; 4442 4443 default: 4444 bt_dev_err(hdev, "unknown type %d conn %p", 4445 conn->type, conn); 4446 break; 4447 } 4448 } 4449 4450 queue_work(hdev->workqueue, &hdev->tx_work); 4451 } 4452 4453 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev, 4454 __u16 handle) 4455 { 4456 struct hci_chan *chan; 4457 4458 switch (hdev->dev_type) { 4459 case HCI_PRIMARY: 4460 return hci_conn_hash_lookup_handle(hdev, handle); 4461 case HCI_AMP: 4462 chan = hci_chan_lookup_handle(hdev, handle); 4463 if (chan) 4464 return chan->conn; 4465 break; 4466 default: 4467 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); 4468 break; 4469 } 4470 4471 return NULL; 4472 } 4473 4474 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data, 4475 struct sk_buff *skb) 4476 { 4477 struct hci_ev_num_comp_blocks *ev = data; 4478 int i; 4479 4480 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS, 4481 flex_array_size(ev, handles, ev->num_hndl))) 4482 return; 4483 4484 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) { 4485 bt_dev_err(hdev, "wrong event for mode %d", 4486 hdev->flow_ctl_mode); 4487 return; 4488 } 4489 4490 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks, 4491 ev->num_hndl); 4492 4493 for (i = 0; i < ev->num_hndl; i++) { 4494 struct hci_comp_blocks_info *info = &ev->handles[i]; 4495 struct hci_conn *conn = NULL; 4496 __u16 handle, block_count; 4497 4498 handle = __le16_to_cpu(info->handle); 4499 block_count = __le16_to_cpu(info->blocks); 4500 4501 conn = __hci_conn_lookup_handle(hdev, handle); 4502 if (!conn) 4503 continue; 4504 4505 conn->sent -= block_count; 4506 4507 switch (conn->type) { 4508 case ACL_LINK: 4509 case AMP_LINK: 4510 hdev->block_cnt += block_count; 4511 if (hdev->block_cnt > hdev->num_blocks) 4512 hdev->block_cnt = hdev->num_blocks; 4513 break; 4514 4515 default: 4516 bt_dev_err(hdev, "unknown type %d conn %p", 4517 conn->type, conn); 4518 break; 4519 } 4520 } 4521 4522 queue_work(hdev->workqueue, &hdev->tx_work); 4523 } 4524 4525 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4526 struct sk_buff *skb) 4527 { 4528 struct hci_ev_mode_change *ev = data; 4529 struct hci_conn *conn; 4530 4531 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4532 4533 hci_dev_lock(hdev); 4534 4535 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4536 if (conn) { 4537 conn->mode = ev->mode; 4538 4539 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4540 &conn->flags)) { 4541 if (conn->mode == HCI_CM_ACTIVE) 4542 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4543 else 4544 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4545 } 4546 4547 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4548 hci_sco_setup(conn, ev->status); 4549 } 4550 4551 hci_dev_unlock(hdev); 4552 } 4553 4554 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4555 struct sk_buff *skb) 4556 { 4557 struct hci_ev_pin_code_req *ev = data; 4558 struct hci_conn *conn; 4559 4560 bt_dev_dbg(hdev, ""); 4561 4562 hci_dev_lock(hdev); 4563 4564 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4565 if (!conn) 4566 goto unlock; 4567 4568 if (conn->state == BT_CONNECTED) { 4569 hci_conn_hold(conn); 4570 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4571 hci_conn_drop(conn); 4572 } 4573 4574 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4575 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4576 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4577 sizeof(ev->bdaddr), &ev->bdaddr); 4578 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4579 u8 secure; 4580 4581 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4582 secure = 1; 4583 else 4584 secure = 0; 4585 4586 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4587 } 4588 4589 unlock: 4590 hci_dev_unlock(hdev); 4591 } 4592 4593 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4594 { 4595 if (key_type == HCI_LK_CHANGED_COMBINATION) 4596 return; 4597 4598 conn->pin_length = pin_len; 4599 conn->key_type = key_type; 4600 4601 switch (key_type) { 4602 case HCI_LK_LOCAL_UNIT: 4603 case HCI_LK_REMOTE_UNIT: 4604 case HCI_LK_DEBUG_COMBINATION: 4605 return; 4606 case HCI_LK_COMBINATION: 4607 if (pin_len == 16) 4608 conn->pending_sec_level = BT_SECURITY_HIGH; 4609 else 4610 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4611 break; 4612 case HCI_LK_UNAUTH_COMBINATION_P192: 4613 case HCI_LK_UNAUTH_COMBINATION_P256: 4614 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4615 break; 4616 case HCI_LK_AUTH_COMBINATION_P192: 4617 conn->pending_sec_level = BT_SECURITY_HIGH; 4618 break; 4619 case HCI_LK_AUTH_COMBINATION_P256: 4620 conn->pending_sec_level = BT_SECURITY_FIPS; 4621 break; 4622 } 4623 } 4624 4625 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4626 struct sk_buff *skb) 4627 { 4628 struct hci_ev_link_key_req *ev = data; 4629 struct hci_cp_link_key_reply cp; 4630 struct hci_conn *conn; 4631 struct link_key *key; 4632 4633 bt_dev_dbg(hdev, ""); 4634 4635 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4636 return; 4637 4638 hci_dev_lock(hdev); 4639 4640 key = hci_find_link_key(hdev, &ev->bdaddr); 4641 if (!key) { 4642 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4643 goto not_found; 4644 } 4645 4646 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4647 4648 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4649 if (conn) { 4650 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4651 4652 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4653 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4654 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4655 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4656 goto not_found; 4657 } 4658 4659 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4660 (conn->pending_sec_level == BT_SECURITY_HIGH || 4661 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4662 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4663 goto not_found; 4664 } 4665 4666 conn_set_key(conn, key->type, key->pin_len); 4667 } 4668 4669 bacpy(&cp.bdaddr, &ev->bdaddr); 4670 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4671 4672 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4673 4674 hci_dev_unlock(hdev); 4675 4676 return; 4677 4678 not_found: 4679 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4680 hci_dev_unlock(hdev); 4681 } 4682 4683 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4684 struct sk_buff *skb) 4685 { 4686 struct hci_ev_link_key_notify *ev = data; 4687 struct hci_conn *conn; 4688 struct link_key *key; 4689 bool persistent; 4690 u8 pin_len = 0; 4691 4692 bt_dev_dbg(hdev, ""); 4693 4694 hci_dev_lock(hdev); 4695 4696 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4697 if (!conn) 4698 goto unlock; 4699 4700 hci_conn_hold(conn); 4701 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4702 hci_conn_drop(conn); 4703 4704 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4705 conn_set_key(conn, ev->key_type, conn->pin_length); 4706 4707 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4708 goto unlock; 4709 4710 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4711 ev->key_type, pin_len, &persistent); 4712 if (!key) 4713 goto unlock; 4714 4715 /* Update connection information since adding the key will have 4716 * fixed up the type in the case of changed combination keys. 4717 */ 4718 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4719 conn_set_key(conn, key->type, key->pin_len); 4720 4721 mgmt_new_link_key(hdev, key, persistent); 4722 4723 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4724 * is set. If it's not set simply remove the key from the kernel 4725 * list (we've still notified user space about it but with 4726 * store_hint being 0). 4727 */ 4728 if (key->type == HCI_LK_DEBUG_COMBINATION && 4729 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4730 list_del_rcu(&key->list); 4731 kfree_rcu(key, rcu); 4732 goto unlock; 4733 } 4734 4735 if (persistent) 4736 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4737 else 4738 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4739 4740 unlock: 4741 hci_dev_unlock(hdev); 4742 } 4743 4744 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4745 struct sk_buff *skb) 4746 { 4747 struct hci_ev_clock_offset *ev = data; 4748 struct hci_conn *conn; 4749 4750 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4751 4752 hci_dev_lock(hdev); 4753 4754 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4755 if (conn && !ev->status) { 4756 struct inquiry_entry *ie; 4757 4758 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4759 if (ie) { 4760 ie->data.clock_offset = ev->clock_offset; 4761 ie->timestamp = jiffies; 4762 } 4763 } 4764 4765 hci_dev_unlock(hdev); 4766 } 4767 4768 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4769 struct sk_buff *skb) 4770 { 4771 struct hci_ev_pkt_type_change *ev = data; 4772 struct hci_conn *conn; 4773 4774 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4775 4776 hci_dev_lock(hdev); 4777 4778 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4779 if (conn && !ev->status) 4780 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4781 4782 hci_dev_unlock(hdev); 4783 } 4784 4785 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4786 struct sk_buff *skb) 4787 { 4788 struct hci_ev_pscan_rep_mode *ev = data; 4789 struct inquiry_entry *ie; 4790 4791 bt_dev_dbg(hdev, ""); 4792 4793 hci_dev_lock(hdev); 4794 4795 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4796 if (ie) { 4797 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4798 ie->timestamp = jiffies; 4799 } 4800 4801 hci_dev_unlock(hdev); 4802 } 4803 4804 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4805 struct sk_buff *skb) 4806 { 4807 struct hci_ev_inquiry_result_rssi *ev = edata; 4808 struct inquiry_data data; 4809 int i; 4810 4811 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4812 4813 if (!ev->num) 4814 return; 4815 4816 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4817 return; 4818 4819 hci_dev_lock(hdev); 4820 4821 if (skb->len == array_size(ev->num, 4822 sizeof(struct inquiry_info_rssi_pscan))) { 4823 struct inquiry_info_rssi_pscan *info; 4824 4825 for (i = 0; i < ev->num; i++) { 4826 u32 flags; 4827 4828 info = hci_ev_skb_pull(hdev, skb, 4829 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4830 sizeof(*info)); 4831 if (!info) { 4832 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4833 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4834 goto unlock; 4835 } 4836 4837 bacpy(&data.bdaddr, &info->bdaddr); 4838 data.pscan_rep_mode = info->pscan_rep_mode; 4839 data.pscan_period_mode = info->pscan_period_mode; 4840 data.pscan_mode = info->pscan_mode; 4841 memcpy(data.dev_class, info->dev_class, 3); 4842 data.clock_offset = info->clock_offset; 4843 data.rssi = info->rssi; 4844 data.ssp_mode = 0x00; 4845 4846 flags = hci_inquiry_cache_update(hdev, &data, false); 4847 4848 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4849 info->dev_class, info->rssi, 4850 flags, NULL, 0, NULL, 0, 0); 4851 } 4852 } else if (skb->len == array_size(ev->num, 4853 sizeof(struct inquiry_info_rssi))) { 4854 struct inquiry_info_rssi *info; 4855 4856 for (i = 0; i < ev->num; i++) { 4857 u32 flags; 4858 4859 info = hci_ev_skb_pull(hdev, skb, 4860 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4861 sizeof(*info)); 4862 if (!info) { 4863 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4864 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4865 goto unlock; 4866 } 4867 4868 bacpy(&data.bdaddr, &info->bdaddr); 4869 data.pscan_rep_mode = info->pscan_rep_mode; 4870 data.pscan_period_mode = info->pscan_period_mode; 4871 data.pscan_mode = 0x00; 4872 memcpy(data.dev_class, info->dev_class, 3); 4873 data.clock_offset = info->clock_offset; 4874 data.rssi = info->rssi; 4875 data.ssp_mode = 0x00; 4876 4877 flags = hci_inquiry_cache_update(hdev, &data, false); 4878 4879 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4880 info->dev_class, info->rssi, 4881 flags, NULL, 0, NULL, 0, 0); 4882 } 4883 } else { 4884 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4885 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4886 } 4887 unlock: 4888 hci_dev_unlock(hdev); 4889 } 4890 4891 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4892 struct sk_buff *skb) 4893 { 4894 struct hci_ev_remote_ext_features *ev = data; 4895 struct hci_conn *conn; 4896 4897 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4898 4899 hci_dev_lock(hdev); 4900 4901 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4902 if (!conn) 4903 goto unlock; 4904 4905 if (ev->page < HCI_MAX_PAGES) 4906 memcpy(conn->features[ev->page], ev->features, 8); 4907 4908 if (!ev->status && ev->page == 0x01) { 4909 struct inquiry_entry *ie; 4910 4911 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4912 if (ie) 4913 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4914 4915 if (ev->features[0] & LMP_HOST_SSP) { 4916 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4917 } else { 4918 /* It is mandatory by the Bluetooth specification that 4919 * Extended Inquiry Results are only used when Secure 4920 * Simple Pairing is enabled, but some devices violate 4921 * this. 4922 * 4923 * To make these devices work, the internal SSP 4924 * enabled flag needs to be cleared if the remote host 4925 * features do not indicate SSP support */ 4926 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4927 } 4928 4929 if (ev->features[0] & LMP_HOST_SC) 4930 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4931 } 4932 4933 if (conn->state != BT_CONFIG) 4934 goto unlock; 4935 4936 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4937 struct hci_cp_remote_name_req cp; 4938 memset(&cp, 0, sizeof(cp)); 4939 bacpy(&cp.bdaddr, &conn->dst); 4940 cp.pscan_rep_mode = 0x02; 4941 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4942 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 4943 mgmt_device_connected(hdev, conn, NULL, 0); 4944 4945 if (!hci_outgoing_auth_needed(hdev, conn)) { 4946 conn->state = BT_CONNECTED; 4947 hci_connect_cfm(conn, ev->status); 4948 hci_conn_drop(conn); 4949 } 4950 4951 unlock: 4952 hci_dev_unlock(hdev); 4953 } 4954 4955 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4956 struct sk_buff *skb) 4957 { 4958 struct hci_ev_sync_conn_complete *ev = data; 4959 struct hci_conn *conn; 4960 u8 status = ev->status; 4961 4962 switch (ev->link_type) { 4963 case SCO_LINK: 4964 case ESCO_LINK: 4965 break; 4966 default: 4967 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4968 * for HCI_Synchronous_Connection_Complete is limited to 4969 * either SCO or eSCO 4970 */ 4971 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4972 return; 4973 } 4974 4975 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4976 4977 hci_dev_lock(hdev); 4978 4979 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4980 if (!conn) { 4981 if (ev->link_type == ESCO_LINK) 4982 goto unlock; 4983 4984 /* When the link type in the event indicates SCO connection 4985 * and lookup of the connection object fails, then check 4986 * if an eSCO connection object exists. 4987 * 4988 * The core limits the synchronous connections to either 4989 * SCO or eSCO. The eSCO connection is preferred and tried 4990 * to be setup first and until successfully established, 4991 * the link type will be hinted as eSCO. 4992 */ 4993 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4994 if (!conn) 4995 goto unlock; 4996 } 4997 4998 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4999 * Processing it more than once per connection can corrupt kernel memory. 5000 * 5001 * As the connection handle is set here for the first time, it indicates 5002 * whether the connection is already set up. 5003 */ 5004 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 5005 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 5006 goto unlock; 5007 } 5008 5009 switch (status) { 5010 case 0x00: 5011 conn->handle = __le16_to_cpu(ev->handle); 5012 if (conn->handle > HCI_CONN_HANDLE_MAX) { 5013 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", 5014 conn->handle, HCI_CONN_HANDLE_MAX); 5015 status = HCI_ERROR_INVALID_PARAMETERS; 5016 conn->state = BT_CLOSED; 5017 break; 5018 } 5019 5020 conn->state = BT_CONNECTED; 5021 conn->type = ev->link_type; 5022 5023 hci_debugfs_create_conn(conn); 5024 hci_conn_add_sysfs(conn); 5025 break; 5026 5027 case 0x10: /* Connection Accept Timeout */ 5028 case 0x0d: /* Connection Rejected due to Limited Resources */ 5029 case 0x11: /* Unsupported Feature or Parameter Value */ 5030 case 0x1c: /* SCO interval rejected */ 5031 case 0x1a: /* Unsupported Remote Feature */ 5032 case 0x1e: /* Invalid LMP Parameters */ 5033 case 0x1f: /* Unspecified error */ 5034 case 0x20: /* Unsupported LMP Parameter value */ 5035 if (conn->out) { 5036 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 5037 (hdev->esco_type & EDR_ESCO_MASK); 5038 if (hci_setup_sync(conn, conn->link->handle)) 5039 goto unlock; 5040 } 5041 fallthrough; 5042 5043 default: 5044 conn->state = BT_CLOSED; 5045 break; 5046 } 5047 5048 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 5049 /* Notify only in case of SCO over HCI transport data path which 5050 * is zero and non-zero value shall be non-HCI transport data path 5051 */ 5052 if (conn->codec.data_path == 0 && hdev->notify) { 5053 switch (ev->air_mode) { 5054 case 0x02: 5055 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 5056 break; 5057 case 0x03: 5058 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 5059 break; 5060 } 5061 } 5062 5063 hci_connect_cfm(conn, status); 5064 if (status) 5065 hci_conn_del(conn); 5066 5067 unlock: 5068 hci_dev_unlock(hdev); 5069 } 5070 5071 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 5072 { 5073 size_t parsed = 0; 5074 5075 while (parsed < eir_len) { 5076 u8 field_len = eir[0]; 5077 5078 if (field_len == 0) 5079 return parsed; 5080 5081 parsed += field_len + 1; 5082 eir += field_len + 1; 5083 } 5084 5085 return eir_len; 5086 } 5087 5088 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 5089 struct sk_buff *skb) 5090 { 5091 struct hci_ev_ext_inquiry_result *ev = edata; 5092 struct inquiry_data data; 5093 size_t eir_len; 5094 int i; 5095 5096 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 5097 flex_array_size(ev, info, ev->num))) 5098 return; 5099 5100 bt_dev_dbg(hdev, "num %d", ev->num); 5101 5102 if (!ev->num) 5103 return; 5104 5105 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 5106 return; 5107 5108 hci_dev_lock(hdev); 5109 5110 for (i = 0; i < ev->num; i++) { 5111 struct extended_inquiry_info *info = &ev->info[i]; 5112 u32 flags; 5113 bool name_known; 5114 5115 bacpy(&data.bdaddr, &info->bdaddr); 5116 data.pscan_rep_mode = info->pscan_rep_mode; 5117 data.pscan_period_mode = info->pscan_period_mode; 5118 data.pscan_mode = 0x00; 5119 memcpy(data.dev_class, info->dev_class, 3); 5120 data.clock_offset = info->clock_offset; 5121 data.rssi = info->rssi; 5122 data.ssp_mode = 0x01; 5123 5124 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5125 name_known = eir_get_data(info->data, 5126 sizeof(info->data), 5127 EIR_NAME_COMPLETE, NULL); 5128 else 5129 name_known = true; 5130 5131 flags = hci_inquiry_cache_update(hdev, &data, name_known); 5132 5133 eir_len = eir_get_length(info->data, sizeof(info->data)); 5134 5135 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 5136 info->dev_class, info->rssi, 5137 flags, info->data, eir_len, NULL, 0, 0); 5138 } 5139 5140 hci_dev_unlock(hdev); 5141 } 5142 5143 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 5144 struct sk_buff *skb) 5145 { 5146 struct hci_ev_key_refresh_complete *ev = data; 5147 struct hci_conn *conn; 5148 5149 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 5150 __le16_to_cpu(ev->handle)); 5151 5152 hci_dev_lock(hdev); 5153 5154 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5155 if (!conn) 5156 goto unlock; 5157 5158 /* For BR/EDR the necessary steps are taken through the 5159 * auth_complete event. 5160 */ 5161 if (conn->type != LE_LINK) 5162 goto unlock; 5163 5164 if (!ev->status) 5165 conn->sec_level = conn->pending_sec_level; 5166 5167 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 5168 5169 if (ev->status && conn->state == BT_CONNECTED) { 5170 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 5171 hci_conn_drop(conn); 5172 goto unlock; 5173 } 5174 5175 if (conn->state == BT_CONFIG) { 5176 if (!ev->status) 5177 conn->state = BT_CONNECTED; 5178 5179 hci_connect_cfm(conn, ev->status); 5180 hci_conn_drop(conn); 5181 } else { 5182 hci_auth_cfm(conn, ev->status); 5183 5184 hci_conn_hold(conn); 5185 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 5186 hci_conn_drop(conn); 5187 } 5188 5189 unlock: 5190 hci_dev_unlock(hdev); 5191 } 5192 5193 static u8 hci_get_auth_req(struct hci_conn *conn) 5194 { 5195 /* If remote requests no-bonding follow that lead */ 5196 if (conn->remote_auth == HCI_AT_NO_BONDING || 5197 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 5198 return conn->remote_auth | (conn->auth_type & 0x01); 5199 5200 /* If both remote and local have enough IO capabilities, require 5201 * MITM protection 5202 */ 5203 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 5204 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 5205 return conn->remote_auth | 0x01; 5206 5207 /* No MITM protection possible so ignore remote requirement */ 5208 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 5209 } 5210 5211 static u8 bredr_oob_data_present(struct hci_conn *conn) 5212 { 5213 struct hci_dev *hdev = conn->hdev; 5214 struct oob_data *data; 5215 5216 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 5217 if (!data) 5218 return 0x00; 5219 5220 if (bredr_sc_enabled(hdev)) { 5221 /* When Secure Connections is enabled, then just 5222 * return the present value stored with the OOB 5223 * data. The stored value contains the right present 5224 * information. However it can only be trusted when 5225 * not in Secure Connection Only mode. 5226 */ 5227 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 5228 return data->present; 5229 5230 /* When Secure Connections Only mode is enabled, then 5231 * the P-256 values are required. If they are not 5232 * available, then do not declare that OOB data is 5233 * present. 5234 */ 5235 if (!memcmp(data->rand256, ZERO_KEY, 16) || 5236 !memcmp(data->hash256, ZERO_KEY, 16)) 5237 return 0x00; 5238 5239 return 0x02; 5240 } 5241 5242 /* When Secure Connections is not enabled or actually 5243 * not supported by the hardware, then check that if 5244 * P-192 data values are present. 5245 */ 5246 if (!memcmp(data->rand192, ZERO_KEY, 16) || 5247 !memcmp(data->hash192, ZERO_KEY, 16)) 5248 return 0x00; 5249 5250 return 0x01; 5251 } 5252 5253 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 5254 struct sk_buff *skb) 5255 { 5256 struct hci_ev_io_capa_request *ev = data; 5257 struct hci_conn *conn; 5258 5259 bt_dev_dbg(hdev, ""); 5260 5261 hci_dev_lock(hdev); 5262 5263 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5264 if (!conn) 5265 goto unlock; 5266 5267 hci_conn_hold(conn); 5268 5269 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5270 goto unlock; 5271 5272 /* Allow pairing if we're pairable, the initiators of the 5273 * pairing or if the remote is not requesting bonding. 5274 */ 5275 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5276 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5277 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5278 struct hci_cp_io_capability_reply cp; 5279 5280 bacpy(&cp.bdaddr, &ev->bdaddr); 5281 /* Change the IO capability from KeyboardDisplay 5282 * to DisplayYesNo as it is not supported by BT spec. */ 5283 cp.capability = (conn->io_capability == 0x04) ? 5284 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5285 5286 /* If we are initiators, there is no remote information yet */ 5287 if (conn->remote_auth == 0xff) { 5288 /* Request MITM protection if our IO caps allow it 5289 * except for the no-bonding case. 5290 */ 5291 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5292 conn->auth_type != HCI_AT_NO_BONDING) 5293 conn->auth_type |= 0x01; 5294 } else { 5295 conn->auth_type = hci_get_auth_req(conn); 5296 } 5297 5298 /* If we're not bondable, force one of the non-bondable 5299 * authentication requirement values. 5300 */ 5301 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5302 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5303 5304 cp.authentication = conn->auth_type; 5305 cp.oob_data = bredr_oob_data_present(conn); 5306 5307 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5308 sizeof(cp), &cp); 5309 } else { 5310 struct hci_cp_io_capability_neg_reply cp; 5311 5312 bacpy(&cp.bdaddr, &ev->bdaddr); 5313 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5314 5315 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5316 sizeof(cp), &cp); 5317 } 5318 5319 unlock: 5320 hci_dev_unlock(hdev); 5321 } 5322 5323 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5324 struct sk_buff *skb) 5325 { 5326 struct hci_ev_io_capa_reply *ev = data; 5327 struct hci_conn *conn; 5328 5329 bt_dev_dbg(hdev, ""); 5330 5331 hci_dev_lock(hdev); 5332 5333 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5334 if (!conn) 5335 goto unlock; 5336 5337 conn->remote_cap = ev->capability; 5338 conn->remote_auth = ev->authentication; 5339 5340 unlock: 5341 hci_dev_unlock(hdev); 5342 } 5343 5344 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5345 struct sk_buff *skb) 5346 { 5347 struct hci_ev_user_confirm_req *ev = data; 5348 int loc_mitm, rem_mitm, confirm_hint = 0; 5349 struct hci_conn *conn; 5350 5351 bt_dev_dbg(hdev, ""); 5352 5353 hci_dev_lock(hdev); 5354 5355 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5356 goto unlock; 5357 5358 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5359 if (!conn) 5360 goto unlock; 5361 5362 loc_mitm = (conn->auth_type & 0x01); 5363 rem_mitm = (conn->remote_auth & 0x01); 5364 5365 /* If we require MITM but the remote device can't provide that 5366 * (it has NoInputNoOutput) then reject the confirmation 5367 * request. We check the security level here since it doesn't 5368 * necessarily match conn->auth_type. 5369 */ 5370 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5371 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5372 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5373 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5374 sizeof(ev->bdaddr), &ev->bdaddr); 5375 goto unlock; 5376 } 5377 5378 /* If no side requires MITM protection; auto-accept */ 5379 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5380 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5381 5382 /* If we're not the initiators request authorization to 5383 * proceed from user space (mgmt_user_confirm with 5384 * confirm_hint set to 1). The exception is if neither 5385 * side had MITM or if the local IO capability is 5386 * NoInputNoOutput, in which case we do auto-accept 5387 */ 5388 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5389 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5390 (loc_mitm || rem_mitm)) { 5391 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5392 confirm_hint = 1; 5393 goto confirm; 5394 } 5395 5396 /* If there already exists link key in local host, leave the 5397 * decision to user space since the remote device could be 5398 * legitimate or malicious. 5399 */ 5400 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5401 bt_dev_dbg(hdev, "Local host already has link key"); 5402 confirm_hint = 1; 5403 goto confirm; 5404 } 5405 5406 BT_DBG("Auto-accept of user confirmation with %ums delay", 5407 hdev->auto_accept_delay); 5408 5409 if (hdev->auto_accept_delay > 0) { 5410 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5411 queue_delayed_work(conn->hdev->workqueue, 5412 &conn->auto_accept_work, delay); 5413 goto unlock; 5414 } 5415 5416 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5417 sizeof(ev->bdaddr), &ev->bdaddr); 5418 goto unlock; 5419 } 5420 5421 confirm: 5422 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5423 le32_to_cpu(ev->passkey), confirm_hint); 5424 5425 unlock: 5426 hci_dev_unlock(hdev); 5427 } 5428 5429 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5430 struct sk_buff *skb) 5431 { 5432 struct hci_ev_user_passkey_req *ev = data; 5433 5434 bt_dev_dbg(hdev, ""); 5435 5436 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5437 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5438 } 5439 5440 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5441 struct sk_buff *skb) 5442 { 5443 struct hci_ev_user_passkey_notify *ev = data; 5444 struct hci_conn *conn; 5445 5446 bt_dev_dbg(hdev, ""); 5447 5448 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5449 if (!conn) 5450 return; 5451 5452 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5453 conn->passkey_entered = 0; 5454 5455 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5456 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5457 conn->dst_type, conn->passkey_notify, 5458 conn->passkey_entered); 5459 } 5460 5461 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5462 struct sk_buff *skb) 5463 { 5464 struct hci_ev_keypress_notify *ev = data; 5465 struct hci_conn *conn; 5466 5467 bt_dev_dbg(hdev, ""); 5468 5469 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5470 if (!conn) 5471 return; 5472 5473 switch (ev->type) { 5474 case HCI_KEYPRESS_STARTED: 5475 conn->passkey_entered = 0; 5476 return; 5477 5478 case HCI_KEYPRESS_ENTERED: 5479 conn->passkey_entered++; 5480 break; 5481 5482 case HCI_KEYPRESS_ERASED: 5483 conn->passkey_entered--; 5484 break; 5485 5486 case HCI_KEYPRESS_CLEARED: 5487 conn->passkey_entered = 0; 5488 break; 5489 5490 case HCI_KEYPRESS_COMPLETED: 5491 return; 5492 } 5493 5494 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5495 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5496 conn->dst_type, conn->passkey_notify, 5497 conn->passkey_entered); 5498 } 5499 5500 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5501 struct sk_buff *skb) 5502 { 5503 struct hci_ev_simple_pair_complete *ev = data; 5504 struct hci_conn *conn; 5505 5506 bt_dev_dbg(hdev, ""); 5507 5508 hci_dev_lock(hdev); 5509 5510 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5511 if (!conn) 5512 goto unlock; 5513 5514 /* Reset the authentication requirement to unknown */ 5515 conn->remote_auth = 0xff; 5516 5517 /* To avoid duplicate auth_failed events to user space we check 5518 * the HCI_CONN_AUTH_PEND flag which will be set if we 5519 * initiated the authentication. A traditional auth_complete 5520 * event gets always produced as initiator and is also mapped to 5521 * the mgmt_auth_failed event */ 5522 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5523 mgmt_auth_failed(conn, ev->status); 5524 5525 hci_conn_drop(conn); 5526 5527 unlock: 5528 hci_dev_unlock(hdev); 5529 } 5530 5531 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5532 struct sk_buff *skb) 5533 { 5534 struct hci_ev_remote_host_features *ev = data; 5535 struct inquiry_entry *ie; 5536 struct hci_conn *conn; 5537 5538 bt_dev_dbg(hdev, ""); 5539 5540 hci_dev_lock(hdev); 5541 5542 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5543 if (conn) 5544 memcpy(conn->features[1], ev->features, 8); 5545 5546 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5547 if (ie) 5548 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5549 5550 hci_dev_unlock(hdev); 5551 } 5552 5553 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5554 struct sk_buff *skb) 5555 { 5556 struct hci_ev_remote_oob_data_request *ev = edata; 5557 struct oob_data *data; 5558 5559 bt_dev_dbg(hdev, ""); 5560 5561 hci_dev_lock(hdev); 5562 5563 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5564 goto unlock; 5565 5566 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5567 if (!data) { 5568 struct hci_cp_remote_oob_data_neg_reply cp; 5569 5570 bacpy(&cp.bdaddr, &ev->bdaddr); 5571 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5572 sizeof(cp), &cp); 5573 goto unlock; 5574 } 5575 5576 if (bredr_sc_enabled(hdev)) { 5577 struct hci_cp_remote_oob_ext_data_reply cp; 5578 5579 bacpy(&cp.bdaddr, &ev->bdaddr); 5580 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5581 memset(cp.hash192, 0, sizeof(cp.hash192)); 5582 memset(cp.rand192, 0, sizeof(cp.rand192)); 5583 } else { 5584 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5585 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5586 } 5587 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5588 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5589 5590 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5591 sizeof(cp), &cp); 5592 } else { 5593 struct hci_cp_remote_oob_data_reply cp; 5594 5595 bacpy(&cp.bdaddr, &ev->bdaddr); 5596 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5597 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5598 5599 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5600 sizeof(cp), &cp); 5601 } 5602 5603 unlock: 5604 hci_dev_unlock(hdev); 5605 } 5606 5607 #if IS_ENABLED(CONFIG_BT_HS) 5608 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data, 5609 struct sk_buff *skb) 5610 { 5611 struct hci_ev_channel_selected *ev = data; 5612 struct hci_conn *hcon; 5613 5614 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle); 5615 5616 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5617 if (!hcon) 5618 return; 5619 5620 amp_read_loc_assoc_final_data(hdev, hcon); 5621 } 5622 5623 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data, 5624 struct sk_buff *skb) 5625 { 5626 struct hci_ev_phy_link_complete *ev = data; 5627 struct hci_conn *hcon, *bredr_hcon; 5628 5629 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle, 5630 ev->status); 5631 5632 hci_dev_lock(hdev); 5633 5634 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5635 if (!hcon) 5636 goto unlock; 5637 5638 if (!hcon->amp_mgr) 5639 goto unlock; 5640 5641 if (ev->status) { 5642 hci_conn_del(hcon); 5643 goto unlock; 5644 } 5645 5646 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon; 5647 5648 hcon->state = BT_CONNECTED; 5649 bacpy(&hcon->dst, &bredr_hcon->dst); 5650 5651 hci_conn_hold(hcon); 5652 hcon->disc_timeout = HCI_DISCONN_TIMEOUT; 5653 hci_conn_drop(hcon); 5654 5655 hci_debugfs_create_conn(hcon); 5656 hci_conn_add_sysfs(hcon); 5657 5658 amp_physical_cfm(bredr_hcon, hcon); 5659 5660 unlock: 5661 hci_dev_unlock(hdev); 5662 } 5663 5664 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data, 5665 struct sk_buff *skb) 5666 { 5667 struct hci_ev_logical_link_complete *ev = data; 5668 struct hci_conn *hcon; 5669 struct hci_chan *hchan; 5670 struct amp_mgr *mgr; 5671 5672 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x", 5673 le16_to_cpu(ev->handle), ev->phy_handle, ev->status); 5674 5675 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5676 if (!hcon) 5677 return; 5678 5679 /* Create AMP hchan */ 5680 hchan = hci_chan_create(hcon); 5681 if (!hchan) 5682 return; 5683 5684 hchan->handle = le16_to_cpu(ev->handle); 5685 hchan->amp = true; 5686 5687 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan); 5688 5689 mgr = hcon->amp_mgr; 5690 if (mgr && mgr->bredr_chan) { 5691 struct l2cap_chan *bredr_chan = mgr->bredr_chan; 5692 5693 l2cap_chan_lock(bredr_chan); 5694 5695 bredr_chan->conn->mtu = hdev->block_mtu; 5696 l2cap_logical_cfm(bredr_chan, hchan, 0); 5697 hci_conn_hold(hcon); 5698 5699 l2cap_chan_unlock(bredr_chan); 5700 } 5701 } 5702 5703 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data, 5704 struct sk_buff *skb) 5705 { 5706 struct hci_ev_disconn_logical_link_complete *ev = data; 5707 struct hci_chan *hchan; 5708 5709 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", 5710 le16_to_cpu(ev->handle), ev->status); 5711 5712 if (ev->status) 5713 return; 5714 5715 hci_dev_lock(hdev); 5716 5717 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle)); 5718 if (!hchan || !hchan->amp) 5719 goto unlock; 5720 5721 amp_destroy_logical_link(hchan, ev->reason); 5722 5723 unlock: 5724 hci_dev_unlock(hdev); 5725 } 5726 5727 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data, 5728 struct sk_buff *skb) 5729 { 5730 struct hci_ev_disconn_phy_link_complete *ev = data; 5731 struct hci_conn *hcon; 5732 5733 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5734 5735 if (ev->status) 5736 return; 5737 5738 hci_dev_lock(hdev); 5739 5740 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5741 if (hcon && hcon->type == AMP_LINK) { 5742 hcon->state = BT_CLOSED; 5743 hci_disconn_cfm(hcon, ev->reason); 5744 hci_conn_del(hcon); 5745 } 5746 5747 hci_dev_unlock(hdev); 5748 } 5749 #endif 5750 5751 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5752 u8 bdaddr_type, bdaddr_t *local_rpa) 5753 { 5754 if (conn->out) { 5755 conn->dst_type = bdaddr_type; 5756 conn->resp_addr_type = bdaddr_type; 5757 bacpy(&conn->resp_addr, bdaddr); 5758 5759 /* Check if the controller has set a Local RPA then it must be 5760 * used instead or hdev->rpa. 5761 */ 5762 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5763 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5764 bacpy(&conn->init_addr, local_rpa); 5765 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5766 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5767 bacpy(&conn->init_addr, &conn->hdev->rpa); 5768 } else { 5769 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5770 &conn->init_addr_type); 5771 } 5772 } else { 5773 conn->resp_addr_type = conn->hdev->adv_addr_type; 5774 /* Check if the controller has set a Local RPA then it must be 5775 * used instead or hdev->rpa. 5776 */ 5777 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5778 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5779 bacpy(&conn->resp_addr, local_rpa); 5780 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5781 /* In case of ext adv, resp_addr will be updated in 5782 * Adv Terminated event. 5783 */ 5784 if (!ext_adv_capable(conn->hdev)) 5785 bacpy(&conn->resp_addr, 5786 &conn->hdev->random_addr); 5787 } else { 5788 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5789 } 5790 5791 conn->init_addr_type = bdaddr_type; 5792 bacpy(&conn->init_addr, bdaddr); 5793 5794 /* For incoming connections, set the default minimum 5795 * and maximum connection interval. They will be used 5796 * to check if the parameters are in range and if not 5797 * trigger the connection update procedure. 5798 */ 5799 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5800 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5801 } 5802 } 5803 5804 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5805 bdaddr_t *bdaddr, u8 bdaddr_type, 5806 bdaddr_t *local_rpa, u8 role, u16 handle, 5807 u16 interval, u16 latency, 5808 u16 supervision_timeout) 5809 { 5810 struct hci_conn_params *params; 5811 struct hci_conn *conn; 5812 struct smp_irk *irk; 5813 u8 addr_type; 5814 5815 hci_dev_lock(hdev); 5816 5817 /* All controllers implicitly stop advertising in the event of a 5818 * connection, so ensure that the state bit is cleared. 5819 */ 5820 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5821 5822 conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, bdaddr); 5823 if (!conn) { 5824 /* In case of error status and there is no connection pending 5825 * just unlock as there is nothing to cleanup. 5826 */ 5827 if (status) 5828 goto unlock; 5829 5830 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role); 5831 if (!conn) { 5832 bt_dev_err(hdev, "no memory for new connection"); 5833 goto unlock; 5834 } 5835 5836 conn->dst_type = bdaddr_type; 5837 5838 /* If we didn't have a hci_conn object previously 5839 * but we're in central role this must be something 5840 * initiated using an accept list. Since accept list based 5841 * connections are not "first class citizens" we don't 5842 * have full tracking of them. Therefore, we go ahead 5843 * with a "best effort" approach of determining the 5844 * initiator address based on the HCI_PRIVACY flag. 5845 */ 5846 if (conn->out) { 5847 conn->resp_addr_type = bdaddr_type; 5848 bacpy(&conn->resp_addr, bdaddr); 5849 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5850 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5851 bacpy(&conn->init_addr, &hdev->rpa); 5852 } else { 5853 hci_copy_identity_address(hdev, 5854 &conn->init_addr, 5855 &conn->init_addr_type); 5856 } 5857 } 5858 } else { 5859 cancel_delayed_work(&conn->le_conn_timeout); 5860 } 5861 5862 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5863 * Processing it more than once per connection can corrupt kernel memory. 5864 * 5865 * As the connection handle is set here for the first time, it indicates 5866 * whether the connection is already set up. 5867 */ 5868 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 5869 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5870 goto unlock; 5871 } 5872 5873 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5874 5875 /* Lookup the identity address from the stored connection 5876 * address and address type. 5877 * 5878 * When establishing connections to an identity address, the 5879 * connection procedure will store the resolvable random 5880 * address first. Now if it can be converted back into the 5881 * identity address, start using the identity address from 5882 * now on. 5883 */ 5884 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5885 if (irk) { 5886 bacpy(&conn->dst, &irk->bdaddr); 5887 conn->dst_type = irk->addr_type; 5888 } 5889 5890 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5891 5892 if (handle > HCI_CONN_HANDLE_MAX) { 5893 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle, 5894 HCI_CONN_HANDLE_MAX); 5895 status = HCI_ERROR_INVALID_PARAMETERS; 5896 } 5897 5898 /* All connection failure handling is taken care of by the 5899 * hci_conn_failed function which is triggered by the HCI 5900 * request completion callbacks used for connecting. 5901 */ 5902 if (status) 5903 goto unlock; 5904 5905 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5906 addr_type = BDADDR_LE_PUBLIC; 5907 else 5908 addr_type = BDADDR_LE_RANDOM; 5909 5910 /* Drop the connection if the device is blocked */ 5911 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5912 hci_conn_drop(conn); 5913 goto unlock; 5914 } 5915 5916 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 5917 mgmt_device_connected(hdev, conn, NULL, 0); 5918 5919 conn->sec_level = BT_SECURITY_LOW; 5920 conn->handle = handle; 5921 conn->state = BT_CONFIG; 5922 5923 /* Store current advertising instance as connection advertising instance 5924 * when sotfware rotation is in use so it can be re-enabled when 5925 * disconnected. 5926 */ 5927 if (!ext_adv_capable(hdev)) 5928 conn->adv_instance = hdev->cur_adv_instance; 5929 5930 conn->le_conn_interval = interval; 5931 conn->le_conn_latency = latency; 5932 conn->le_supv_timeout = supervision_timeout; 5933 5934 hci_debugfs_create_conn(conn); 5935 hci_conn_add_sysfs(conn); 5936 5937 /* The remote features procedure is defined for central 5938 * role only. So only in case of an initiated connection 5939 * request the remote features. 5940 * 5941 * If the local controller supports peripheral-initiated features 5942 * exchange, then requesting the remote features in peripheral 5943 * role is possible. Otherwise just transition into the 5944 * connected state without requesting the remote features. 5945 */ 5946 if (conn->out || 5947 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5948 struct hci_cp_le_read_remote_features cp; 5949 5950 cp.handle = __cpu_to_le16(conn->handle); 5951 5952 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5953 sizeof(cp), &cp); 5954 5955 hci_conn_hold(conn); 5956 } else { 5957 conn->state = BT_CONNECTED; 5958 hci_connect_cfm(conn, status); 5959 } 5960 5961 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5962 conn->dst_type); 5963 if (params) { 5964 list_del_init(¶ms->action); 5965 if (params->conn) { 5966 hci_conn_drop(params->conn); 5967 hci_conn_put(params->conn); 5968 params->conn = NULL; 5969 } 5970 } 5971 5972 unlock: 5973 hci_update_passive_scan(hdev); 5974 hci_dev_unlock(hdev); 5975 } 5976 5977 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5978 struct sk_buff *skb) 5979 { 5980 struct hci_ev_le_conn_complete *ev = data; 5981 5982 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5983 5984 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5985 NULL, ev->role, le16_to_cpu(ev->handle), 5986 le16_to_cpu(ev->interval), 5987 le16_to_cpu(ev->latency), 5988 le16_to_cpu(ev->supervision_timeout)); 5989 } 5990 5991 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5992 struct sk_buff *skb) 5993 { 5994 struct hci_ev_le_enh_conn_complete *ev = data; 5995 5996 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5997 5998 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5999 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 6000 le16_to_cpu(ev->interval), 6001 le16_to_cpu(ev->latency), 6002 le16_to_cpu(ev->supervision_timeout)); 6003 } 6004 6005 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 6006 struct sk_buff *skb) 6007 { 6008 struct hci_evt_le_ext_adv_set_term *ev = data; 6009 struct hci_conn *conn; 6010 struct adv_info *adv, *n; 6011 6012 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6013 6014 /* The Bluetooth Core 5.3 specification clearly states that this event 6015 * shall not be sent when the Host disables the advertising set. So in 6016 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 6017 * 6018 * When the Host disables an advertising set, all cleanup is done via 6019 * its command callback and not needed to be duplicated here. 6020 */ 6021 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 6022 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 6023 return; 6024 } 6025 6026 hci_dev_lock(hdev); 6027 6028 adv = hci_find_adv_instance(hdev, ev->handle); 6029 6030 if (ev->status) { 6031 if (!adv) 6032 goto unlock; 6033 6034 /* Remove advertising as it has been terminated */ 6035 hci_remove_adv_instance(hdev, ev->handle); 6036 mgmt_advertising_removed(NULL, hdev, ev->handle); 6037 6038 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 6039 if (adv->enabled) 6040 goto unlock; 6041 } 6042 6043 /* We are no longer advertising, clear HCI_LE_ADV */ 6044 hci_dev_clear_flag(hdev, HCI_LE_ADV); 6045 goto unlock; 6046 } 6047 6048 if (adv) 6049 adv->enabled = false; 6050 6051 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 6052 if (conn) { 6053 /* Store handle in the connection so the correct advertising 6054 * instance can be re-enabled when disconnected. 6055 */ 6056 conn->adv_instance = ev->handle; 6057 6058 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 6059 bacmp(&conn->resp_addr, BDADDR_ANY)) 6060 goto unlock; 6061 6062 if (!ev->handle) { 6063 bacpy(&conn->resp_addr, &hdev->random_addr); 6064 goto unlock; 6065 } 6066 6067 if (adv) 6068 bacpy(&conn->resp_addr, &adv->random_addr); 6069 } 6070 6071 unlock: 6072 hci_dev_unlock(hdev); 6073 } 6074 6075 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 6076 struct sk_buff *skb) 6077 { 6078 struct hci_ev_le_conn_update_complete *ev = data; 6079 struct hci_conn *conn; 6080 6081 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6082 6083 if (ev->status) 6084 return; 6085 6086 hci_dev_lock(hdev); 6087 6088 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6089 if (conn) { 6090 conn->le_conn_interval = le16_to_cpu(ev->interval); 6091 conn->le_conn_latency = le16_to_cpu(ev->latency); 6092 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 6093 } 6094 6095 hci_dev_unlock(hdev); 6096 } 6097 6098 /* This function requires the caller holds hdev->lock */ 6099 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 6100 bdaddr_t *addr, 6101 u8 addr_type, bool addr_resolved, 6102 u8 adv_type) 6103 { 6104 struct hci_conn *conn; 6105 struct hci_conn_params *params; 6106 6107 /* If the event is not connectable don't proceed further */ 6108 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 6109 return NULL; 6110 6111 /* Ignore if the device is blocked or hdev is suspended */ 6112 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 6113 hdev->suspended) 6114 return NULL; 6115 6116 /* Most controller will fail if we try to create new connections 6117 * while we have an existing one in peripheral role. 6118 */ 6119 if (hdev->conn_hash.le_num_peripheral > 0 && 6120 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || 6121 !(hdev->le_states[3] & 0x10))) 6122 return NULL; 6123 6124 /* If we're not connectable only connect devices that we have in 6125 * our pend_le_conns list. 6126 */ 6127 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 6128 addr_type); 6129 if (!params) 6130 return NULL; 6131 6132 if (!params->explicit_connect) { 6133 switch (params->auto_connect) { 6134 case HCI_AUTO_CONN_DIRECT: 6135 /* Only devices advertising with ADV_DIRECT_IND are 6136 * triggering a connection attempt. This is allowing 6137 * incoming connections from peripheral devices. 6138 */ 6139 if (adv_type != LE_ADV_DIRECT_IND) 6140 return NULL; 6141 break; 6142 case HCI_AUTO_CONN_ALWAYS: 6143 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 6144 * are triggering a connection attempt. This means 6145 * that incoming connections from peripheral device are 6146 * accepted and also outgoing connections to peripheral 6147 * devices are established when found. 6148 */ 6149 break; 6150 default: 6151 return NULL; 6152 } 6153 } 6154 6155 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 6156 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 6157 HCI_ROLE_MASTER); 6158 if (!IS_ERR(conn)) { 6159 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 6160 * by higher layer that tried to connect, if no then 6161 * store the pointer since we don't really have any 6162 * other owner of the object besides the params that 6163 * triggered it. This way we can abort the connection if 6164 * the parameters get removed and keep the reference 6165 * count consistent once the connection is established. 6166 */ 6167 6168 if (!params->explicit_connect) 6169 params->conn = hci_conn_get(conn); 6170 6171 return conn; 6172 } 6173 6174 switch (PTR_ERR(conn)) { 6175 case -EBUSY: 6176 /* If hci_connect() returns -EBUSY it means there is already 6177 * an LE connection attempt going on. Since controllers don't 6178 * support more than one connection attempt at the time, we 6179 * don't consider this an error case. 6180 */ 6181 break; 6182 default: 6183 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 6184 return NULL; 6185 } 6186 6187 return NULL; 6188 } 6189 6190 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 6191 u8 bdaddr_type, bdaddr_t *direct_addr, 6192 u8 direct_addr_type, s8 rssi, u8 *data, u8 len, 6193 bool ext_adv, bool ctl_time, u64 instant) 6194 { 6195 struct discovery_state *d = &hdev->discovery; 6196 struct smp_irk *irk; 6197 struct hci_conn *conn; 6198 bool match, bdaddr_resolved; 6199 u32 flags; 6200 u8 *ptr; 6201 6202 switch (type) { 6203 case LE_ADV_IND: 6204 case LE_ADV_DIRECT_IND: 6205 case LE_ADV_SCAN_IND: 6206 case LE_ADV_NONCONN_IND: 6207 case LE_ADV_SCAN_RSP: 6208 break; 6209 default: 6210 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 6211 "type: 0x%02x", type); 6212 return; 6213 } 6214 6215 if (!ext_adv && len > HCI_MAX_AD_LENGTH) { 6216 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes"); 6217 return; 6218 } 6219 6220 /* Find the end of the data in case the report contains padded zero 6221 * bytes at the end causing an invalid length value. 6222 * 6223 * When data is NULL, len is 0 so there is no need for extra ptr 6224 * check as 'ptr < data + 0' is already false in such case. 6225 */ 6226 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 6227 if (ptr + 1 + *ptr > data + len) 6228 break; 6229 } 6230 6231 /* Adjust for actual length. This handles the case when remote 6232 * device is advertising with incorrect data length. 6233 */ 6234 len = ptr - data; 6235 6236 /* If the direct address is present, then this report is from 6237 * a LE Direct Advertising Report event. In that case it is 6238 * important to see if the address is matching the local 6239 * controller address. 6240 */ 6241 if (!hci_dev_test_flag(hdev, HCI_MESH) && direct_addr) { 6242 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 6243 &bdaddr_resolved); 6244 6245 /* Only resolvable random addresses are valid for these 6246 * kind of reports and others can be ignored. 6247 */ 6248 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 6249 return; 6250 6251 /* If the controller is not using resolvable random 6252 * addresses, then this report can be ignored. 6253 */ 6254 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 6255 return; 6256 6257 /* If the local IRK of the controller does not match 6258 * with the resolvable random address provided, then 6259 * this report can be ignored. 6260 */ 6261 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 6262 return; 6263 } 6264 6265 /* Check if we need to convert to identity address */ 6266 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6267 if (irk) { 6268 bdaddr = &irk->bdaddr; 6269 bdaddr_type = irk->addr_type; 6270 } 6271 6272 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6273 6274 /* Check if we have been requested to connect to this device. 6275 * 6276 * direct_addr is set only for directed advertising reports (it is NULL 6277 * for advertising reports) and is already verified to be RPA above. 6278 */ 6279 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6280 type); 6281 if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) { 6282 /* Store report for later inclusion by 6283 * mgmt_device_connected 6284 */ 6285 memcpy(conn->le_adv_data, data, len); 6286 conn->le_adv_data_len = len; 6287 } 6288 6289 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6290 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6291 else 6292 flags = 0; 6293 6294 /* All scan results should be sent up for Mesh systems */ 6295 if (hci_dev_test_flag(hdev, HCI_MESH)) { 6296 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6297 rssi, flags, data, len, NULL, 0, instant); 6298 return; 6299 } 6300 6301 /* Passive scanning shouldn't trigger any device found events, 6302 * except for devices marked as CONN_REPORT for which we do send 6303 * device found events, or advertisement monitoring requested. 6304 */ 6305 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6306 if (type == LE_ADV_DIRECT_IND) 6307 return; 6308 6309 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6310 bdaddr, bdaddr_type) && 6311 idr_is_empty(&hdev->adv_monitors_idr)) 6312 return; 6313 6314 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6315 rssi, flags, data, len, NULL, 0, 0); 6316 return; 6317 } 6318 6319 /* When receiving non-connectable or scannable undirected 6320 * advertising reports, this means that the remote device is 6321 * not connectable and then clearly indicate this in the 6322 * device found event. 6323 * 6324 * When receiving a scan response, then there is no way to 6325 * know if the remote device is connectable or not. However 6326 * since scan responses are merged with a previously seen 6327 * advertising report, the flags field from that report 6328 * will be used. 6329 * 6330 * In the really unlikely case that a controller get confused 6331 * and just sends a scan response event, then it is marked as 6332 * not connectable as well. 6333 */ 6334 if (type == LE_ADV_SCAN_RSP) 6335 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6336 6337 /* If there's nothing pending either store the data from this 6338 * event or send an immediate device found event if the data 6339 * should not be stored for later. 6340 */ 6341 if (!ext_adv && !has_pending_adv_report(hdev)) { 6342 /* If the report will trigger a SCAN_REQ store it for 6343 * later merging. 6344 */ 6345 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6346 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6347 rssi, flags, data, len); 6348 return; 6349 } 6350 6351 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6352 rssi, flags, data, len, NULL, 0, 0); 6353 return; 6354 } 6355 6356 /* Check if the pending report is for the same device as the new one */ 6357 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6358 bdaddr_type == d->last_adv_addr_type); 6359 6360 /* If the pending data doesn't match this report or this isn't a 6361 * scan response (e.g. we got a duplicate ADV_IND) then force 6362 * sending of the pending data. 6363 */ 6364 if (type != LE_ADV_SCAN_RSP || !match) { 6365 /* Send out whatever is in the cache, but skip duplicates */ 6366 if (!match) 6367 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6368 d->last_adv_addr_type, NULL, 6369 d->last_adv_rssi, d->last_adv_flags, 6370 d->last_adv_data, 6371 d->last_adv_data_len, NULL, 0, 0); 6372 6373 /* If the new report will trigger a SCAN_REQ store it for 6374 * later merging. 6375 */ 6376 if (!ext_adv && (type == LE_ADV_IND || 6377 type == LE_ADV_SCAN_IND)) { 6378 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6379 rssi, flags, data, len); 6380 return; 6381 } 6382 6383 /* The advertising reports cannot be merged, so clear 6384 * the pending report and send out a device found event. 6385 */ 6386 clear_pending_adv_report(hdev); 6387 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6388 rssi, flags, data, len, NULL, 0, 0); 6389 return; 6390 } 6391 6392 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6393 * the new event is a SCAN_RSP. We can therefore proceed with 6394 * sending a merged device found event. 6395 */ 6396 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6397 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6398 d->last_adv_data, d->last_adv_data_len, data, len, 0); 6399 clear_pending_adv_report(hdev); 6400 } 6401 6402 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6403 struct sk_buff *skb) 6404 { 6405 struct hci_ev_le_advertising_report *ev = data; 6406 u64 instant = jiffies; 6407 6408 if (!ev->num) 6409 return; 6410 6411 hci_dev_lock(hdev); 6412 6413 while (ev->num--) { 6414 struct hci_ev_le_advertising_info *info; 6415 s8 rssi; 6416 6417 info = hci_le_ev_skb_pull(hdev, skb, 6418 HCI_EV_LE_ADVERTISING_REPORT, 6419 sizeof(*info)); 6420 if (!info) 6421 break; 6422 6423 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6424 info->length + 1)) 6425 break; 6426 6427 if (info->length <= HCI_MAX_AD_LENGTH) { 6428 rssi = info->data[info->length]; 6429 process_adv_report(hdev, info->type, &info->bdaddr, 6430 info->bdaddr_type, NULL, 0, rssi, 6431 info->data, info->length, false, 6432 false, instant); 6433 } else { 6434 bt_dev_err(hdev, "Dropping invalid advertising data"); 6435 } 6436 } 6437 6438 hci_dev_unlock(hdev); 6439 } 6440 6441 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6442 { 6443 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6444 switch (evt_type) { 6445 case LE_LEGACY_ADV_IND: 6446 return LE_ADV_IND; 6447 case LE_LEGACY_ADV_DIRECT_IND: 6448 return LE_ADV_DIRECT_IND; 6449 case LE_LEGACY_ADV_SCAN_IND: 6450 return LE_ADV_SCAN_IND; 6451 case LE_LEGACY_NONCONN_IND: 6452 return LE_ADV_NONCONN_IND; 6453 case LE_LEGACY_SCAN_RSP_ADV: 6454 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6455 return LE_ADV_SCAN_RSP; 6456 } 6457 6458 goto invalid; 6459 } 6460 6461 if (evt_type & LE_EXT_ADV_CONN_IND) { 6462 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6463 return LE_ADV_DIRECT_IND; 6464 6465 return LE_ADV_IND; 6466 } 6467 6468 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6469 return LE_ADV_SCAN_RSP; 6470 6471 if (evt_type & LE_EXT_ADV_SCAN_IND) 6472 return LE_ADV_SCAN_IND; 6473 6474 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6475 evt_type & LE_EXT_ADV_DIRECT_IND) 6476 return LE_ADV_NONCONN_IND; 6477 6478 invalid: 6479 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6480 evt_type); 6481 6482 return LE_ADV_INVALID; 6483 } 6484 6485 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6486 struct sk_buff *skb) 6487 { 6488 struct hci_ev_le_ext_adv_report *ev = data; 6489 u64 instant = jiffies; 6490 6491 if (!ev->num) 6492 return; 6493 6494 hci_dev_lock(hdev); 6495 6496 while (ev->num--) { 6497 struct hci_ev_le_ext_adv_info *info; 6498 u8 legacy_evt_type; 6499 u16 evt_type; 6500 6501 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6502 sizeof(*info)); 6503 if (!info) 6504 break; 6505 6506 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6507 info->length)) 6508 break; 6509 6510 evt_type = __le16_to_cpu(info->type) & LE_EXT_ADV_EVT_TYPE_MASK; 6511 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6512 if (legacy_evt_type != LE_ADV_INVALID) { 6513 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6514 info->bdaddr_type, NULL, 0, 6515 info->rssi, info->data, info->length, 6516 !(evt_type & LE_EXT_ADV_LEGACY_PDU), 6517 false, instant); 6518 } 6519 } 6520 6521 hci_dev_unlock(hdev); 6522 } 6523 6524 static int hci_le_pa_term_sync(struct hci_dev *hdev, __le16 handle) 6525 { 6526 struct hci_cp_le_pa_term_sync cp; 6527 6528 memset(&cp, 0, sizeof(cp)); 6529 cp.handle = handle; 6530 6531 return hci_send_cmd(hdev, HCI_OP_LE_PA_TERM_SYNC, sizeof(cp), &cp); 6532 } 6533 6534 static void hci_le_pa_sync_estabilished_evt(struct hci_dev *hdev, void *data, 6535 struct sk_buff *skb) 6536 { 6537 struct hci_ev_le_pa_sync_established *ev = data; 6538 int mask = hdev->link_mode; 6539 __u8 flags = 0; 6540 6541 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6542 6543 if (ev->status) 6544 return; 6545 6546 hci_dev_lock(hdev); 6547 6548 hci_dev_clear_flag(hdev, HCI_PA_SYNC); 6549 6550 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ISO_LINK, &flags); 6551 if (!(mask & HCI_LM_ACCEPT)) 6552 hci_le_pa_term_sync(hdev, ev->handle); 6553 6554 hci_dev_unlock(hdev); 6555 } 6556 6557 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6558 struct sk_buff *skb) 6559 { 6560 struct hci_ev_le_remote_feat_complete *ev = data; 6561 struct hci_conn *conn; 6562 6563 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6564 6565 hci_dev_lock(hdev); 6566 6567 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6568 if (conn) { 6569 if (!ev->status) 6570 memcpy(conn->features[0], ev->features, 8); 6571 6572 if (conn->state == BT_CONFIG) { 6573 __u8 status; 6574 6575 /* If the local controller supports peripheral-initiated 6576 * features exchange, but the remote controller does 6577 * not, then it is possible that the error code 0x1a 6578 * for unsupported remote feature gets returned. 6579 * 6580 * In this specific case, allow the connection to 6581 * transition into connected state and mark it as 6582 * successful. 6583 */ 6584 if (!conn->out && ev->status == 0x1a && 6585 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6586 status = 0x00; 6587 else 6588 status = ev->status; 6589 6590 conn->state = BT_CONNECTED; 6591 hci_connect_cfm(conn, status); 6592 hci_conn_drop(conn); 6593 } 6594 } 6595 6596 hci_dev_unlock(hdev); 6597 } 6598 6599 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6600 struct sk_buff *skb) 6601 { 6602 struct hci_ev_le_ltk_req *ev = data; 6603 struct hci_cp_le_ltk_reply cp; 6604 struct hci_cp_le_ltk_neg_reply neg; 6605 struct hci_conn *conn; 6606 struct smp_ltk *ltk; 6607 6608 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6609 6610 hci_dev_lock(hdev); 6611 6612 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6613 if (conn == NULL) 6614 goto not_found; 6615 6616 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6617 if (!ltk) 6618 goto not_found; 6619 6620 if (smp_ltk_is_sc(ltk)) { 6621 /* With SC both EDiv and Rand are set to zero */ 6622 if (ev->ediv || ev->rand) 6623 goto not_found; 6624 } else { 6625 /* For non-SC keys check that EDiv and Rand match */ 6626 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6627 goto not_found; 6628 } 6629 6630 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6631 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6632 cp.handle = cpu_to_le16(conn->handle); 6633 6634 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6635 6636 conn->enc_key_size = ltk->enc_size; 6637 6638 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6639 6640 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6641 * temporary key used to encrypt a connection following 6642 * pairing. It is used during the Encrypted Session Setup to 6643 * distribute the keys. Later, security can be re-established 6644 * using a distributed LTK. 6645 */ 6646 if (ltk->type == SMP_STK) { 6647 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6648 list_del_rcu(<k->list); 6649 kfree_rcu(ltk, rcu); 6650 } else { 6651 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6652 } 6653 6654 hci_dev_unlock(hdev); 6655 6656 return; 6657 6658 not_found: 6659 neg.handle = ev->handle; 6660 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6661 hci_dev_unlock(hdev); 6662 } 6663 6664 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6665 u8 reason) 6666 { 6667 struct hci_cp_le_conn_param_req_neg_reply cp; 6668 6669 cp.handle = cpu_to_le16(handle); 6670 cp.reason = reason; 6671 6672 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6673 &cp); 6674 } 6675 6676 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6677 struct sk_buff *skb) 6678 { 6679 struct hci_ev_le_remote_conn_param_req *ev = data; 6680 struct hci_cp_le_conn_param_req_reply cp; 6681 struct hci_conn *hcon; 6682 u16 handle, min, max, latency, timeout; 6683 6684 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6685 6686 handle = le16_to_cpu(ev->handle); 6687 min = le16_to_cpu(ev->interval_min); 6688 max = le16_to_cpu(ev->interval_max); 6689 latency = le16_to_cpu(ev->latency); 6690 timeout = le16_to_cpu(ev->timeout); 6691 6692 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6693 if (!hcon || hcon->state != BT_CONNECTED) 6694 return send_conn_param_neg_reply(hdev, handle, 6695 HCI_ERROR_UNKNOWN_CONN_ID); 6696 6697 if (hci_check_conn_params(min, max, latency, timeout)) 6698 return send_conn_param_neg_reply(hdev, handle, 6699 HCI_ERROR_INVALID_LL_PARAMS); 6700 6701 if (hcon->role == HCI_ROLE_MASTER) { 6702 struct hci_conn_params *params; 6703 u8 store_hint; 6704 6705 hci_dev_lock(hdev); 6706 6707 params = hci_conn_params_lookup(hdev, &hcon->dst, 6708 hcon->dst_type); 6709 if (params) { 6710 params->conn_min_interval = min; 6711 params->conn_max_interval = max; 6712 params->conn_latency = latency; 6713 params->supervision_timeout = timeout; 6714 store_hint = 0x01; 6715 } else { 6716 store_hint = 0x00; 6717 } 6718 6719 hci_dev_unlock(hdev); 6720 6721 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6722 store_hint, min, max, latency, timeout); 6723 } 6724 6725 cp.handle = ev->handle; 6726 cp.interval_min = ev->interval_min; 6727 cp.interval_max = ev->interval_max; 6728 cp.latency = ev->latency; 6729 cp.timeout = ev->timeout; 6730 cp.min_ce_len = 0; 6731 cp.max_ce_len = 0; 6732 6733 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6734 } 6735 6736 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6737 struct sk_buff *skb) 6738 { 6739 struct hci_ev_le_direct_adv_report *ev = data; 6740 u64 instant = jiffies; 6741 int i; 6742 6743 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6744 flex_array_size(ev, info, ev->num))) 6745 return; 6746 6747 if (!ev->num) 6748 return; 6749 6750 hci_dev_lock(hdev); 6751 6752 for (i = 0; i < ev->num; i++) { 6753 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6754 6755 process_adv_report(hdev, info->type, &info->bdaddr, 6756 info->bdaddr_type, &info->direct_addr, 6757 info->direct_addr_type, info->rssi, NULL, 0, 6758 false, false, instant); 6759 } 6760 6761 hci_dev_unlock(hdev); 6762 } 6763 6764 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6765 struct sk_buff *skb) 6766 { 6767 struct hci_ev_le_phy_update_complete *ev = data; 6768 struct hci_conn *conn; 6769 6770 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6771 6772 if (ev->status) 6773 return; 6774 6775 hci_dev_lock(hdev); 6776 6777 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6778 if (!conn) 6779 goto unlock; 6780 6781 conn->le_tx_phy = ev->tx_phy; 6782 conn->le_rx_phy = ev->rx_phy; 6783 6784 unlock: 6785 hci_dev_unlock(hdev); 6786 } 6787 6788 static void hci_le_cis_estabilished_evt(struct hci_dev *hdev, void *data, 6789 struct sk_buff *skb) 6790 { 6791 struct hci_evt_le_cis_established *ev = data; 6792 struct hci_conn *conn; 6793 u16 handle = __le16_to_cpu(ev->handle); 6794 6795 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6796 6797 hci_dev_lock(hdev); 6798 6799 conn = hci_conn_hash_lookup_handle(hdev, handle); 6800 if (!conn) { 6801 bt_dev_err(hdev, 6802 "Unable to find connection with handle 0x%4.4x", 6803 handle); 6804 goto unlock; 6805 } 6806 6807 if (conn->type != ISO_LINK) { 6808 bt_dev_err(hdev, 6809 "Invalid connection link type handle 0x%4.4x", 6810 handle); 6811 goto unlock; 6812 } 6813 6814 if (conn->role == HCI_ROLE_SLAVE) { 6815 __le32 interval; 6816 6817 memset(&interval, 0, sizeof(interval)); 6818 6819 memcpy(&interval, ev->c_latency, sizeof(ev->c_latency)); 6820 conn->iso_qos.in.interval = le32_to_cpu(interval); 6821 memcpy(&interval, ev->p_latency, sizeof(ev->p_latency)); 6822 conn->iso_qos.out.interval = le32_to_cpu(interval); 6823 conn->iso_qos.in.latency = le16_to_cpu(ev->interval); 6824 conn->iso_qos.out.latency = le16_to_cpu(ev->interval); 6825 conn->iso_qos.in.sdu = le16_to_cpu(ev->c_mtu); 6826 conn->iso_qos.out.sdu = le16_to_cpu(ev->p_mtu); 6827 conn->iso_qos.in.phy = ev->c_phy; 6828 conn->iso_qos.out.phy = ev->p_phy; 6829 } 6830 6831 if (!ev->status) { 6832 conn->state = BT_CONNECTED; 6833 hci_debugfs_create_conn(conn); 6834 hci_conn_add_sysfs(conn); 6835 hci_iso_setup_path(conn); 6836 goto unlock; 6837 } 6838 6839 hci_connect_cfm(conn, ev->status); 6840 hci_conn_del(conn); 6841 6842 unlock: 6843 hci_dev_unlock(hdev); 6844 } 6845 6846 static void hci_le_reject_cis(struct hci_dev *hdev, __le16 handle) 6847 { 6848 struct hci_cp_le_reject_cis cp; 6849 6850 memset(&cp, 0, sizeof(cp)); 6851 cp.handle = handle; 6852 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 6853 hci_send_cmd(hdev, HCI_OP_LE_REJECT_CIS, sizeof(cp), &cp); 6854 } 6855 6856 static void hci_le_accept_cis(struct hci_dev *hdev, __le16 handle) 6857 { 6858 struct hci_cp_le_accept_cis cp; 6859 6860 memset(&cp, 0, sizeof(cp)); 6861 cp.handle = handle; 6862 hci_send_cmd(hdev, HCI_OP_LE_ACCEPT_CIS, sizeof(cp), &cp); 6863 } 6864 6865 static void hci_le_cis_req_evt(struct hci_dev *hdev, void *data, 6866 struct sk_buff *skb) 6867 { 6868 struct hci_evt_le_cis_req *ev = data; 6869 u16 acl_handle, cis_handle; 6870 struct hci_conn *acl, *cis; 6871 int mask; 6872 __u8 flags = 0; 6873 6874 acl_handle = __le16_to_cpu(ev->acl_handle); 6875 cis_handle = __le16_to_cpu(ev->cis_handle); 6876 6877 bt_dev_dbg(hdev, "acl 0x%4.4x handle 0x%4.4x cig 0x%2.2x cis 0x%2.2x", 6878 acl_handle, cis_handle, ev->cig_id, ev->cis_id); 6879 6880 hci_dev_lock(hdev); 6881 6882 acl = hci_conn_hash_lookup_handle(hdev, acl_handle); 6883 if (!acl) 6884 goto unlock; 6885 6886 mask = hci_proto_connect_ind(hdev, &acl->dst, ISO_LINK, &flags); 6887 if (!(mask & HCI_LM_ACCEPT)) { 6888 hci_le_reject_cis(hdev, ev->cis_handle); 6889 goto unlock; 6890 } 6891 6892 cis = hci_conn_hash_lookup_handle(hdev, cis_handle); 6893 if (!cis) { 6894 cis = hci_conn_add(hdev, ISO_LINK, &acl->dst, HCI_ROLE_SLAVE); 6895 if (!cis) { 6896 hci_le_reject_cis(hdev, ev->cis_handle); 6897 goto unlock; 6898 } 6899 cis->handle = cis_handle; 6900 } 6901 6902 cis->iso_qos.cig = ev->cig_id; 6903 cis->iso_qos.cis = ev->cis_id; 6904 6905 if (!(flags & HCI_PROTO_DEFER)) { 6906 hci_le_accept_cis(hdev, ev->cis_handle); 6907 } else { 6908 cis->state = BT_CONNECT2; 6909 hci_connect_cfm(cis, 0); 6910 } 6911 6912 unlock: 6913 hci_dev_unlock(hdev); 6914 } 6915 6916 static void hci_le_create_big_complete_evt(struct hci_dev *hdev, void *data, 6917 struct sk_buff *skb) 6918 { 6919 struct hci_evt_le_create_big_complete *ev = data; 6920 struct hci_conn *conn; 6921 6922 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 6923 6924 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_CREATE_BIG_COMPLETE, 6925 flex_array_size(ev, bis_handle, ev->num_bis))) 6926 return; 6927 6928 hci_dev_lock(hdev); 6929 6930 conn = hci_conn_hash_lookup_big(hdev, ev->handle); 6931 if (!conn) 6932 goto unlock; 6933 6934 if (conn->type != ISO_LINK) { 6935 bt_dev_err(hdev, 6936 "Invalid connection link type handle 0x%2.2x", 6937 ev->handle); 6938 goto unlock; 6939 } 6940 6941 if (ev->num_bis) 6942 conn->handle = __le16_to_cpu(ev->bis_handle[0]); 6943 6944 if (!ev->status) { 6945 conn->state = BT_CONNECTED; 6946 hci_debugfs_create_conn(conn); 6947 hci_conn_add_sysfs(conn); 6948 hci_iso_setup_path(conn); 6949 goto unlock; 6950 } 6951 6952 hci_connect_cfm(conn, ev->status); 6953 hci_conn_del(conn); 6954 6955 unlock: 6956 hci_dev_unlock(hdev); 6957 } 6958 6959 static void hci_le_big_sync_established_evt(struct hci_dev *hdev, void *data, 6960 struct sk_buff *skb) 6961 { 6962 struct hci_evt_le_big_sync_estabilished *ev = data; 6963 struct hci_conn *bis; 6964 int i; 6965 6966 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6967 6968 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 6969 flex_array_size(ev, bis, ev->num_bis))) 6970 return; 6971 6972 if (ev->status) 6973 return; 6974 6975 hci_dev_lock(hdev); 6976 6977 for (i = 0; i < ev->num_bis; i++) { 6978 u16 handle = le16_to_cpu(ev->bis[i]); 6979 __le32 interval; 6980 6981 bis = hci_conn_hash_lookup_handle(hdev, handle); 6982 if (!bis) { 6983 bis = hci_conn_add(hdev, ISO_LINK, BDADDR_ANY, 6984 HCI_ROLE_SLAVE); 6985 if (!bis) 6986 continue; 6987 bis->handle = handle; 6988 } 6989 6990 bis->iso_qos.big = ev->handle; 6991 memset(&interval, 0, sizeof(interval)); 6992 memcpy(&interval, ev->latency, sizeof(ev->latency)); 6993 bis->iso_qos.in.interval = le32_to_cpu(interval); 6994 /* Convert ISO Interval (1.25 ms slots) to latency (ms) */ 6995 bis->iso_qos.in.latency = le16_to_cpu(ev->interval) * 125 / 100; 6996 bis->iso_qos.in.sdu = le16_to_cpu(ev->max_pdu); 6997 6998 hci_connect_cfm(bis, ev->status); 6999 } 7000 7001 hci_dev_unlock(hdev); 7002 } 7003 7004 static void hci_le_big_info_adv_report_evt(struct hci_dev *hdev, void *data, 7005 struct sk_buff *skb) 7006 { 7007 struct hci_evt_le_big_info_adv_report *ev = data; 7008 int mask = hdev->link_mode; 7009 __u8 flags = 0; 7010 7011 bt_dev_dbg(hdev, "sync_handle 0x%4.4x", le16_to_cpu(ev->sync_handle)); 7012 7013 hci_dev_lock(hdev); 7014 7015 mask |= hci_proto_connect_ind(hdev, BDADDR_ANY, ISO_LINK, &flags); 7016 if (!(mask & HCI_LM_ACCEPT)) 7017 hci_le_pa_term_sync(hdev, ev->sync_handle); 7018 7019 hci_dev_unlock(hdev); 7020 } 7021 7022 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 7023 [_op] = { \ 7024 .func = _func, \ 7025 .min_len = _min_len, \ 7026 .max_len = _max_len, \ 7027 } 7028 7029 #define HCI_LE_EV(_op, _func, _len) \ 7030 HCI_LE_EV_VL(_op, _func, _len, _len) 7031 7032 #define HCI_LE_EV_STATUS(_op, _func) \ 7033 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 7034 7035 /* Entries in this table shall have their position according to the subevent 7036 * opcode they handle so the use of the macros above is recommend since it does 7037 * attempt to initialize at its proper index using Designated Initializers that 7038 * way events without a callback function can be ommited. 7039 */ 7040 static const struct hci_le_ev { 7041 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 7042 u16 min_len; 7043 u16 max_len; 7044 } hci_le_ev_table[U8_MAX + 1] = { 7045 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 7046 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 7047 sizeof(struct hci_ev_le_conn_complete)), 7048 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 7049 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 7050 sizeof(struct hci_ev_le_advertising_report), 7051 HCI_MAX_EVENT_SIZE), 7052 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 7053 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 7054 hci_le_conn_update_complete_evt, 7055 sizeof(struct hci_ev_le_conn_update_complete)), 7056 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 7057 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 7058 hci_le_remote_feat_complete_evt, 7059 sizeof(struct hci_ev_le_remote_feat_complete)), 7060 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 7061 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 7062 sizeof(struct hci_ev_le_ltk_req)), 7063 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 7064 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 7065 hci_le_remote_conn_param_req_evt, 7066 sizeof(struct hci_ev_le_remote_conn_param_req)), 7067 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 7068 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 7069 hci_le_enh_conn_complete_evt, 7070 sizeof(struct hci_ev_le_enh_conn_complete)), 7071 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 7072 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 7073 sizeof(struct hci_ev_le_direct_adv_report), 7074 HCI_MAX_EVENT_SIZE), 7075 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 7076 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 7077 sizeof(struct hci_ev_le_phy_update_complete)), 7078 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 7079 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 7080 sizeof(struct hci_ev_le_ext_adv_report), 7081 HCI_MAX_EVENT_SIZE), 7082 /* [0x0e = HCI_EV_LE_PA_SYNC_ESTABLISHED] */ 7083 HCI_LE_EV(HCI_EV_LE_PA_SYNC_ESTABLISHED, 7084 hci_le_pa_sync_estabilished_evt, 7085 sizeof(struct hci_ev_le_pa_sync_established)), 7086 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 7087 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 7088 sizeof(struct hci_evt_le_ext_adv_set_term)), 7089 /* [0x19 = HCI_EVT_LE_CIS_ESTABLISHED] */ 7090 HCI_LE_EV(HCI_EVT_LE_CIS_ESTABLISHED, hci_le_cis_estabilished_evt, 7091 sizeof(struct hci_evt_le_cis_established)), 7092 /* [0x1a = HCI_EVT_LE_CIS_REQ] */ 7093 HCI_LE_EV(HCI_EVT_LE_CIS_REQ, hci_le_cis_req_evt, 7094 sizeof(struct hci_evt_le_cis_req)), 7095 /* [0x1b = HCI_EVT_LE_CREATE_BIG_COMPLETE] */ 7096 HCI_LE_EV_VL(HCI_EVT_LE_CREATE_BIG_COMPLETE, 7097 hci_le_create_big_complete_evt, 7098 sizeof(struct hci_evt_le_create_big_complete), 7099 HCI_MAX_EVENT_SIZE), 7100 /* [0x1d = HCI_EV_LE_BIG_SYNC_ESTABILISHED] */ 7101 HCI_LE_EV_VL(HCI_EVT_LE_BIG_SYNC_ESTABILISHED, 7102 hci_le_big_sync_established_evt, 7103 sizeof(struct hci_evt_le_big_sync_estabilished), 7104 HCI_MAX_EVENT_SIZE), 7105 /* [0x22 = HCI_EVT_LE_BIG_INFO_ADV_REPORT] */ 7106 HCI_LE_EV_VL(HCI_EVT_LE_BIG_INFO_ADV_REPORT, 7107 hci_le_big_info_adv_report_evt, 7108 sizeof(struct hci_evt_le_big_info_adv_report), 7109 HCI_MAX_EVENT_SIZE), 7110 }; 7111 7112 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 7113 struct sk_buff *skb, u16 *opcode, u8 *status, 7114 hci_req_complete_t *req_complete, 7115 hci_req_complete_skb_t *req_complete_skb) 7116 { 7117 struct hci_ev_le_meta *ev = data; 7118 const struct hci_le_ev *subev; 7119 7120 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 7121 7122 /* Only match event if command OGF is for LE */ 7123 if (hdev->sent_cmd && 7124 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 && 7125 hci_skb_event(hdev->sent_cmd) == ev->subevent) { 7126 *opcode = hci_skb_opcode(hdev->sent_cmd); 7127 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 7128 req_complete_skb); 7129 } 7130 7131 subev = &hci_le_ev_table[ev->subevent]; 7132 if (!subev->func) 7133 return; 7134 7135 if (skb->len < subev->min_len) { 7136 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 7137 ev->subevent, skb->len, subev->min_len); 7138 return; 7139 } 7140 7141 /* Just warn if the length is over max_len size it still be 7142 * possible to partially parse the event so leave to callback to 7143 * decide if that is acceptable. 7144 */ 7145 if (skb->len > subev->max_len) 7146 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 7147 ev->subevent, skb->len, subev->max_len); 7148 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 7149 if (!data) 7150 return; 7151 7152 subev->func(hdev, data, skb); 7153 } 7154 7155 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 7156 u8 event, struct sk_buff *skb) 7157 { 7158 struct hci_ev_cmd_complete *ev; 7159 struct hci_event_hdr *hdr; 7160 7161 if (!skb) 7162 return false; 7163 7164 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 7165 if (!hdr) 7166 return false; 7167 7168 if (event) { 7169 if (hdr->evt != event) 7170 return false; 7171 return true; 7172 } 7173 7174 /* Check if request ended in Command Status - no way to retrieve 7175 * any extra parameters in this case. 7176 */ 7177 if (hdr->evt == HCI_EV_CMD_STATUS) 7178 return false; 7179 7180 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 7181 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 7182 hdr->evt); 7183 return false; 7184 } 7185 7186 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 7187 if (!ev) 7188 return false; 7189 7190 if (opcode != __le16_to_cpu(ev->opcode)) { 7191 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 7192 __le16_to_cpu(ev->opcode)); 7193 return false; 7194 } 7195 7196 return true; 7197 } 7198 7199 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 7200 struct sk_buff *skb) 7201 { 7202 struct hci_ev_le_advertising_info *adv; 7203 struct hci_ev_le_direct_adv_info *direct_adv; 7204 struct hci_ev_le_ext_adv_info *ext_adv; 7205 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 7206 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 7207 7208 hci_dev_lock(hdev); 7209 7210 /* If we are currently suspended and this is the first BT event seen, 7211 * save the wake reason associated with the event. 7212 */ 7213 if (!hdev->suspended || hdev->wake_reason) 7214 goto unlock; 7215 7216 /* Default to remote wake. Values for wake_reason are documented in the 7217 * Bluez mgmt api docs. 7218 */ 7219 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 7220 7221 /* Once configured for remote wakeup, we should only wake up for 7222 * reconnections. It's useful to see which device is waking us up so 7223 * keep track of the bdaddr of the connection event that woke us up. 7224 */ 7225 if (event == HCI_EV_CONN_REQUEST) { 7226 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 7227 hdev->wake_addr_type = BDADDR_BREDR; 7228 } else if (event == HCI_EV_CONN_COMPLETE) { 7229 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 7230 hdev->wake_addr_type = BDADDR_BREDR; 7231 } else if (event == HCI_EV_LE_META) { 7232 struct hci_ev_le_meta *le_ev = (void *)skb->data; 7233 u8 subevent = le_ev->subevent; 7234 u8 *ptr = &skb->data[sizeof(*le_ev)]; 7235 u8 num_reports = *ptr; 7236 7237 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 7238 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 7239 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 7240 num_reports) { 7241 adv = (void *)(ptr + 1); 7242 direct_adv = (void *)(ptr + 1); 7243 ext_adv = (void *)(ptr + 1); 7244 7245 switch (subevent) { 7246 case HCI_EV_LE_ADVERTISING_REPORT: 7247 bacpy(&hdev->wake_addr, &adv->bdaddr); 7248 hdev->wake_addr_type = adv->bdaddr_type; 7249 break; 7250 case HCI_EV_LE_DIRECT_ADV_REPORT: 7251 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 7252 hdev->wake_addr_type = direct_adv->bdaddr_type; 7253 break; 7254 case HCI_EV_LE_EXT_ADV_REPORT: 7255 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 7256 hdev->wake_addr_type = ext_adv->bdaddr_type; 7257 break; 7258 } 7259 } 7260 } else { 7261 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 7262 } 7263 7264 unlock: 7265 hci_dev_unlock(hdev); 7266 } 7267 7268 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 7269 [_op] = { \ 7270 .req = false, \ 7271 .func = _func, \ 7272 .min_len = _min_len, \ 7273 .max_len = _max_len, \ 7274 } 7275 7276 #define HCI_EV(_op, _func, _len) \ 7277 HCI_EV_VL(_op, _func, _len, _len) 7278 7279 #define HCI_EV_STATUS(_op, _func) \ 7280 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 7281 7282 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 7283 [_op] = { \ 7284 .req = true, \ 7285 .func_req = _func, \ 7286 .min_len = _min_len, \ 7287 .max_len = _max_len, \ 7288 } 7289 7290 #define HCI_EV_REQ(_op, _func, _len) \ 7291 HCI_EV_REQ_VL(_op, _func, _len, _len) 7292 7293 /* Entries in this table shall have their position according to the event opcode 7294 * they handle so the use of the macros above is recommend since it does attempt 7295 * to initialize at its proper index using Designated Initializers that way 7296 * events without a callback function don't have entered. 7297 */ 7298 static const struct hci_ev { 7299 bool req; 7300 union { 7301 void (*func)(struct hci_dev *hdev, void *data, 7302 struct sk_buff *skb); 7303 void (*func_req)(struct hci_dev *hdev, void *data, 7304 struct sk_buff *skb, u16 *opcode, u8 *status, 7305 hci_req_complete_t *req_complete, 7306 hci_req_complete_skb_t *req_complete_skb); 7307 }; 7308 u16 min_len; 7309 u16 max_len; 7310 } hci_ev_table[U8_MAX + 1] = { 7311 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 7312 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 7313 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 7314 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 7315 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 7316 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 7317 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 7318 sizeof(struct hci_ev_conn_complete)), 7319 /* [0x04 = HCI_EV_CONN_REQUEST] */ 7320 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 7321 sizeof(struct hci_ev_conn_request)), 7322 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 7323 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 7324 sizeof(struct hci_ev_disconn_complete)), 7325 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 7326 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 7327 sizeof(struct hci_ev_auth_complete)), 7328 /* [0x07 = HCI_EV_REMOTE_NAME] */ 7329 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 7330 sizeof(struct hci_ev_remote_name)), 7331 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 7332 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 7333 sizeof(struct hci_ev_encrypt_change)), 7334 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 7335 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 7336 hci_change_link_key_complete_evt, 7337 sizeof(struct hci_ev_change_link_key_complete)), 7338 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 7339 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 7340 sizeof(struct hci_ev_remote_features)), 7341 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 7342 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 7343 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 7344 /* [0x0f = HCI_EV_CMD_STATUS] */ 7345 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 7346 sizeof(struct hci_ev_cmd_status)), 7347 /* [0x10 = HCI_EV_CMD_STATUS] */ 7348 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 7349 sizeof(struct hci_ev_hardware_error)), 7350 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 7351 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 7352 sizeof(struct hci_ev_role_change)), 7353 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 7354 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 7355 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 7356 /* [0x14 = HCI_EV_MODE_CHANGE] */ 7357 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 7358 sizeof(struct hci_ev_mode_change)), 7359 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 7360 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 7361 sizeof(struct hci_ev_pin_code_req)), 7362 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 7363 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 7364 sizeof(struct hci_ev_link_key_req)), 7365 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 7366 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 7367 sizeof(struct hci_ev_link_key_notify)), 7368 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 7369 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 7370 sizeof(struct hci_ev_clock_offset)), 7371 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 7372 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 7373 sizeof(struct hci_ev_pkt_type_change)), 7374 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 7375 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 7376 sizeof(struct hci_ev_pscan_rep_mode)), 7377 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 7378 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 7379 hci_inquiry_result_with_rssi_evt, 7380 sizeof(struct hci_ev_inquiry_result_rssi), 7381 HCI_MAX_EVENT_SIZE), 7382 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 7383 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 7384 sizeof(struct hci_ev_remote_ext_features)), 7385 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 7386 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 7387 sizeof(struct hci_ev_sync_conn_complete)), 7388 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 7389 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 7390 hci_extended_inquiry_result_evt, 7391 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 7392 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 7393 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 7394 sizeof(struct hci_ev_key_refresh_complete)), 7395 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 7396 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 7397 sizeof(struct hci_ev_io_capa_request)), 7398 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 7399 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 7400 sizeof(struct hci_ev_io_capa_reply)), 7401 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 7402 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 7403 sizeof(struct hci_ev_user_confirm_req)), 7404 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 7405 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 7406 sizeof(struct hci_ev_user_passkey_req)), 7407 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 7408 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 7409 sizeof(struct hci_ev_remote_oob_data_request)), 7410 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 7411 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 7412 sizeof(struct hci_ev_simple_pair_complete)), 7413 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 7414 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 7415 sizeof(struct hci_ev_user_passkey_notify)), 7416 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 7417 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 7418 sizeof(struct hci_ev_keypress_notify)), 7419 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 7420 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 7421 sizeof(struct hci_ev_remote_host_features)), 7422 /* [0x3e = HCI_EV_LE_META] */ 7423 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 7424 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 7425 #if IS_ENABLED(CONFIG_BT_HS) 7426 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */ 7427 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt, 7428 sizeof(struct hci_ev_phy_link_complete)), 7429 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */ 7430 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt, 7431 sizeof(struct hci_ev_channel_selected)), 7432 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */ 7433 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE, 7434 hci_disconn_loglink_complete_evt, 7435 sizeof(struct hci_ev_disconn_logical_link_complete)), 7436 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */ 7437 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt, 7438 sizeof(struct hci_ev_logical_link_complete)), 7439 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */ 7440 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE, 7441 hci_disconn_phylink_complete_evt, 7442 sizeof(struct hci_ev_disconn_phy_link_complete)), 7443 #endif 7444 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */ 7445 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt, 7446 sizeof(struct hci_ev_num_comp_blocks)), 7447 /* [0xff = HCI_EV_VENDOR] */ 7448 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 7449 }; 7450 7451 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 7452 u16 *opcode, u8 *status, 7453 hci_req_complete_t *req_complete, 7454 hci_req_complete_skb_t *req_complete_skb) 7455 { 7456 const struct hci_ev *ev = &hci_ev_table[event]; 7457 void *data; 7458 7459 if (!ev->func) 7460 return; 7461 7462 if (skb->len < ev->min_len) { 7463 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 7464 event, skb->len, ev->min_len); 7465 return; 7466 } 7467 7468 /* Just warn if the length is over max_len size it still be 7469 * possible to partially parse the event so leave to callback to 7470 * decide if that is acceptable. 7471 */ 7472 if (skb->len > ev->max_len) 7473 bt_dev_warn_ratelimited(hdev, 7474 "unexpected event 0x%2.2x length: %u > %u", 7475 event, skb->len, ev->max_len); 7476 7477 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 7478 if (!data) 7479 return; 7480 7481 if (ev->req) 7482 ev->func_req(hdev, data, skb, opcode, status, req_complete, 7483 req_complete_skb); 7484 else 7485 ev->func(hdev, data, skb); 7486 } 7487 7488 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 7489 { 7490 struct hci_event_hdr *hdr = (void *) skb->data; 7491 hci_req_complete_t req_complete = NULL; 7492 hci_req_complete_skb_t req_complete_skb = NULL; 7493 struct sk_buff *orig_skb = NULL; 7494 u8 status = 0, event, req_evt = 0; 7495 u16 opcode = HCI_OP_NOP; 7496 7497 if (skb->len < sizeof(*hdr)) { 7498 bt_dev_err(hdev, "Malformed HCI Event"); 7499 goto done; 7500 } 7501 7502 kfree_skb(hdev->recv_event); 7503 hdev->recv_event = skb_clone(skb, GFP_KERNEL); 7504 7505 event = hdr->evt; 7506 if (!event) { 7507 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 7508 event); 7509 goto done; 7510 } 7511 7512 /* Only match event if command OGF is not for LE */ 7513 if (hdev->sent_cmd && 7514 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 && 7515 hci_skb_event(hdev->sent_cmd) == event) { 7516 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd), 7517 status, &req_complete, &req_complete_skb); 7518 req_evt = event; 7519 } 7520 7521 /* If it looks like we might end up having to call 7522 * req_complete_skb, store a pristine copy of the skb since the 7523 * various handlers may modify the original one through 7524 * skb_pull() calls, etc. 7525 */ 7526 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 7527 event == HCI_EV_CMD_COMPLETE) 7528 orig_skb = skb_clone(skb, GFP_KERNEL); 7529 7530 skb_pull(skb, HCI_EVENT_HDR_SIZE); 7531 7532 /* Store wake reason if we're suspended */ 7533 hci_store_wake_reason(hdev, event, skb); 7534 7535 bt_dev_dbg(hdev, "event 0x%2.2x", event); 7536 7537 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 7538 &req_complete_skb); 7539 7540 if (req_complete) { 7541 req_complete(hdev, status, opcode); 7542 } else if (req_complete_skb) { 7543 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 7544 kfree_skb(orig_skb); 7545 orig_skb = NULL; 7546 } 7547 req_complete_skb(hdev, status, opcode, orig_skb); 7548 } 7549 7550 done: 7551 kfree_skb(orig_skb); 7552 kfree_skb(skb); 7553 hdev->stat.evt_rx++; 7554 } 7555