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