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_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_req_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_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 3372 hci_remove_link_key(hdev, &conn->dst); 3373 3374 hci_req_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 schedule_delayed_work(&hdev->ncmd_timer, 3772 HCI_NCMD_TIMEOUT); 3773 } 3774 } 3775 } 3776 3777 #define HCI_CC_VL(_op, _func, _min, _max) \ 3778 { \ 3779 .op = _op, \ 3780 .func = _func, \ 3781 .min_len = _min, \ 3782 .max_len = _max, \ 3783 } 3784 3785 #define HCI_CC(_op, _func, _len) \ 3786 HCI_CC_VL(_op, _func, _len, _len) 3787 3788 #define HCI_CC_STATUS(_op, _func) \ 3789 HCI_CC(_op, _func, sizeof(struct hci_ev_status)) 3790 3791 static const struct hci_cc { 3792 u16 op; 3793 u8 (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 3794 u16 min_len; 3795 u16 max_len; 3796 } hci_cc_table[] = { 3797 HCI_CC_STATUS(HCI_OP_INQUIRY_CANCEL, hci_cc_inquiry_cancel), 3798 HCI_CC_STATUS(HCI_OP_PERIODIC_INQ, hci_cc_periodic_inq), 3799 HCI_CC_STATUS(HCI_OP_EXIT_PERIODIC_INQ, hci_cc_exit_periodic_inq), 3800 HCI_CC_STATUS(HCI_OP_REMOTE_NAME_REQ_CANCEL, 3801 hci_cc_remote_name_req_cancel), 3802 HCI_CC(HCI_OP_ROLE_DISCOVERY, hci_cc_role_discovery, 3803 sizeof(struct hci_rp_role_discovery)), 3804 HCI_CC(HCI_OP_READ_LINK_POLICY, hci_cc_read_link_policy, 3805 sizeof(struct hci_rp_read_link_policy)), 3806 HCI_CC(HCI_OP_WRITE_LINK_POLICY, hci_cc_write_link_policy, 3807 sizeof(struct hci_rp_write_link_policy)), 3808 HCI_CC(HCI_OP_READ_DEF_LINK_POLICY, hci_cc_read_def_link_policy, 3809 sizeof(struct hci_rp_read_def_link_policy)), 3810 HCI_CC_STATUS(HCI_OP_WRITE_DEF_LINK_POLICY, 3811 hci_cc_write_def_link_policy), 3812 HCI_CC_STATUS(HCI_OP_RESET, hci_cc_reset), 3813 HCI_CC(HCI_OP_READ_STORED_LINK_KEY, hci_cc_read_stored_link_key, 3814 sizeof(struct hci_rp_read_stored_link_key)), 3815 HCI_CC(HCI_OP_DELETE_STORED_LINK_KEY, hci_cc_delete_stored_link_key, 3816 sizeof(struct hci_rp_delete_stored_link_key)), 3817 HCI_CC_STATUS(HCI_OP_WRITE_LOCAL_NAME, hci_cc_write_local_name), 3818 HCI_CC(HCI_OP_READ_LOCAL_NAME, hci_cc_read_local_name, 3819 sizeof(struct hci_rp_read_local_name)), 3820 HCI_CC_STATUS(HCI_OP_WRITE_AUTH_ENABLE, hci_cc_write_auth_enable), 3821 HCI_CC_STATUS(HCI_OP_WRITE_ENCRYPT_MODE, hci_cc_write_encrypt_mode), 3822 HCI_CC_STATUS(HCI_OP_WRITE_SCAN_ENABLE, hci_cc_write_scan_enable), 3823 HCI_CC_STATUS(HCI_OP_SET_EVENT_FLT, hci_cc_set_event_filter), 3824 HCI_CC(HCI_OP_READ_CLASS_OF_DEV, hci_cc_read_class_of_dev, 3825 sizeof(struct hci_rp_read_class_of_dev)), 3826 HCI_CC_STATUS(HCI_OP_WRITE_CLASS_OF_DEV, hci_cc_write_class_of_dev), 3827 HCI_CC(HCI_OP_READ_VOICE_SETTING, hci_cc_read_voice_setting, 3828 sizeof(struct hci_rp_read_voice_setting)), 3829 HCI_CC_STATUS(HCI_OP_WRITE_VOICE_SETTING, hci_cc_write_voice_setting), 3830 HCI_CC(HCI_OP_READ_NUM_SUPPORTED_IAC, hci_cc_read_num_supported_iac, 3831 sizeof(struct hci_rp_read_num_supported_iac)), 3832 HCI_CC_STATUS(HCI_OP_WRITE_SSP_MODE, hci_cc_write_ssp_mode), 3833 HCI_CC_STATUS(HCI_OP_WRITE_SC_SUPPORT, hci_cc_write_sc_support), 3834 HCI_CC(HCI_OP_READ_AUTH_PAYLOAD_TO, hci_cc_read_auth_payload_timeout, 3835 sizeof(struct hci_rp_read_auth_payload_to)), 3836 HCI_CC(HCI_OP_WRITE_AUTH_PAYLOAD_TO, hci_cc_write_auth_payload_timeout, 3837 sizeof(struct hci_rp_write_auth_payload_to)), 3838 HCI_CC(HCI_OP_READ_LOCAL_VERSION, hci_cc_read_local_version, 3839 sizeof(struct hci_rp_read_local_version)), 3840 HCI_CC(HCI_OP_READ_LOCAL_COMMANDS, hci_cc_read_local_commands, 3841 sizeof(struct hci_rp_read_local_commands)), 3842 HCI_CC(HCI_OP_READ_LOCAL_FEATURES, hci_cc_read_local_features, 3843 sizeof(struct hci_rp_read_local_features)), 3844 HCI_CC(HCI_OP_READ_LOCAL_EXT_FEATURES, hci_cc_read_local_ext_features, 3845 sizeof(struct hci_rp_read_local_ext_features)), 3846 HCI_CC(HCI_OP_READ_BUFFER_SIZE, hci_cc_read_buffer_size, 3847 sizeof(struct hci_rp_read_buffer_size)), 3848 HCI_CC(HCI_OP_READ_BD_ADDR, hci_cc_read_bd_addr, 3849 sizeof(struct hci_rp_read_bd_addr)), 3850 HCI_CC(HCI_OP_READ_LOCAL_PAIRING_OPTS, hci_cc_read_local_pairing_opts, 3851 sizeof(struct hci_rp_read_local_pairing_opts)), 3852 HCI_CC(HCI_OP_READ_PAGE_SCAN_ACTIVITY, hci_cc_read_page_scan_activity, 3853 sizeof(struct hci_rp_read_page_scan_activity)), 3854 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_ACTIVITY, 3855 hci_cc_write_page_scan_activity), 3856 HCI_CC(HCI_OP_READ_PAGE_SCAN_TYPE, hci_cc_read_page_scan_type, 3857 sizeof(struct hci_rp_read_page_scan_type)), 3858 HCI_CC_STATUS(HCI_OP_WRITE_PAGE_SCAN_TYPE, hci_cc_write_page_scan_type), 3859 HCI_CC(HCI_OP_READ_DATA_BLOCK_SIZE, hci_cc_read_data_block_size, 3860 sizeof(struct hci_rp_read_data_block_size)), 3861 HCI_CC(HCI_OP_READ_FLOW_CONTROL_MODE, hci_cc_read_flow_control_mode, 3862 sizeof(struct hci_rp_read_flow_control_mode)), 3863 HCI_CC(HCI_OP_READ_LOCAL_AMP_INFO, hci_cc_read_local_amp_info, 3864 sizeof(struct hci_rp_read_local_amp_info)), 3865 HCI_CC(HCI_OP_READ_CLOCK, hci_cc_read_clock, 3866 sizeof(struct hci_rp_read_clock)), 3867 HCI_CC(HCI_OP_READ_INQ_RSP_TX_POWER, hci_cc_read_inq_rsp_tx_power, 3868 sizeof(struct hci_rp_read_inq_rsp_tx_power)), 3869 HCI_CC(HCI_OP_READ_DEF_ERR_DATA_REPORTING, 3870 hci_cc_read_def_err_data_reporting, 3871 sizeof(struct hci_rp_read_def_err_data_reporting)), 3872 HCI_CC_STATUS(HCI_OP_WRITE_DEF_ERR_DATA_REPORTING, 3873 hci_cc_write_def_err_data_reporting), 3874 HCI_CC(HCI_OP_PIN_CODE_REPLY, hci_cc_pin_code_reply, 3875 sizeof(struct hci_rp_pin_code_reply)), 3876 HCI_CC(HCI_OP_PIN_CODE_NEG_REPLY, hci_cc_pin_code_neg_reply, 3877 sizeof(struct hci_rp_pin_code_neg_reply)), 3878 HCI_CC(HCI_OP_READ_LOCAL_OOB_DATA, hci_cc_read_local_oob_data, 3879 sizeof(struct hci_rp_read_local_oob_data)), 3880 HCI_CC(HCI_OP_READ_LOCAL_OOB_EXT_DATA, hci_cc_read_local_oob_ext_data, 3881 sizeof(struct hci_rp_read_local_oob_ext_data)), 3882 HCI_CC(HCI_OP_LE_READ_BUFFER_SIZE, hci_cc_le_read_buffer_size, 3883 sizeof(struct hci_rp_le_read_buffer_size)), 3884 HCI_CC(HCI_OP_LE_READ_LOCAL_FEATURES, hci_cc_le_read_local_features, 3885 sizeof(struct hci_rp_le_read_local_features)), 3886 HCI_CC(HCI_OP_LE_READ_ADV_TX_POWER, hci_cc_le_read_adv_tx_power, 3887 sizeof(struct hci_rp_le_read_adv_tx_power)), 3888 HCI_CC(HCI_OP_USER_CONFIRM_REPLY, hci_cc_user_confirm_reply, 3889 sizeof(struct hci_rp_user_confirm_reply)), 3890 HCI_CC(HCI_OP_USER_CONFIRM_NEG_REPLY, hci_cc_user_confirm_neg_reply, 3891 sizeof(struct hci_rp_user_confirm_reply)), 3892 HCI_CC(HCI_OP_USER_PASSKEY_REPLY, hci_cc_user_passkey_reply, 3893 sizeof(struct hci_rp_user_confirm_reply)), 3894 HCI_CC(HCI_OP_USER_PASSKEY_NEG_REPLY, hci_cc_user_passkey_neg_reply, 3895 sizeof(struct hci_rp_user_confirm_reply)), 3896 HCI_CC_STATUS(HCI_OP_LE_SET_RANDOM_ADDR, hci_cc_le_set_random_addr), 3897 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_ENABLE, hci_cc_le_set_adv_enable), 3898 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_PARAM, hci_cc_le_set_scan_param), 3899 HCI_CC_STATUS(HCI_OP_LE_SET_SCAN_ENABLE, hci_cc_le_set_scan_enable), 3900 HCI_CC(HCI_OP_LE_READ_ACCEPT_LIST_SIZE, 3901 hci_cc_le_read_accept_list_size, 3902 sizeof(struct hci_rp_le_read_accept_list_size)), 3903 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ACCEPT_LIST, hci_cc_le_clear_accept_list), 3904 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_ACCEPT_LIST, 3905 hci_cc_le_add_to_accept_list), 3906 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_ACCEPT_LIST, 3907 hci_cc_le_del_from_accept_list), 3908 HCI_CC(HCI_OP_LE_READ_SUPPORTED_STATES, hci_cc_le_read_supported_states, 3909 sizeof(struct hci_rp_le_read_supported_states)), 3910 HCI_CC(HCI_OP_LE_READ_DEF_DATA_LEN, hci_cc_le_read_def_data_len, 3911 sizeof(struct hci_rp_le_read_def_data_len)), 3912 HCI_CC_STATUS(HCI_OP_LE_WRITE_DEF_DATA_LEN, 3913 hci_cc_le_write_def_data_len), 3914 HCI_CC_STATUS(HCI_OP_LE_ADD_TO_RESOLV_LIST, 3915 hci_cc_le_add_to_resolv_list), 3916 HCI_CC_STATUS(HCI_OP_LE_DEL_FROM_RESOLV_LIST, 3917 hci_cc_le_del_from_resolv_list), 3918 HCI_CC_STATUS(HCI_OP_LE_CLEAR_RESOLV_LIST, 3919 hci_cc_le_clear_resolv_list), 3920 HCI_CC(HCI_OP_LE_READ_RESOLV_LIST_SIZE, hci_cc_le_read_resolv_list_size, 3921 sizeof(struct hci_rp_le_read_resolv_list_size)), 3922 HCI_CC_STATUS(HCI_OP_LE_SET_ADDR_RESOLV_ENABLE, 3923 hci_cc_le_set_addr_resolution_enable), 3924 HCI_CC(HCI_OP_LE_READ_MAX_DATA_LEN, hci_cc_le_read_max_data_len, 3925 sizeof(struct hci_rp_le_read_max_data_len)), 3926 HCI_CC_STATUS(HCI_OP_WRITE_LE_HOST_SUPPORTED, 3927 hci_cc_write_le_host_supported), 3928 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_PARAM, hci_cc_set_adv_param), 3929 HCI_CC(HCI_OP_READ_RSSI, hci_cc_read_rssi, 3930 sizeof(struct hci_rp_read_rssi)), 3931 HCI_CC(HCI_OP_READ_TX_POWER, hci_cc_read_tx_power, 3932 sizeof(struct hci_rp_read_tx_power)), 3933 HCI_CC_STATUS(HCI_OP_WRITE_SSP_DEBUG_MODE, hci_cc_write_ssp_debug_mode), 3934 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_PARAMS, 3935 hci_cc_le_set_ext_scan_param), 3936 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_SCAN_ENABLE, 3937 hci_cc_le_set_ext_scan_enable), 3938 HCI_CC_STATUS(HCI_OP_LE_SET_DEFAULT_PHY, hci_cc_le_set_default_phy), 3939 HCI_CC(HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS, 3940 hci_cc_le_read_num_adv_sets, 3941 sizeof(struct hci_rp_le_read_num_supported_adv_sets)), 3942 HCI_CC(HCI_OP_LE_SET_EXT_ADV_PARAMS, hci_cc_set_ext_adv_param, 3943 sizeof(struct hci_rp_le_set_ext_adv_params)), 3944 HCI_CC_STATUS(HCI_OP_LE_SET_EXT_ADV_ENABLE, 3945 hci_cc_le_set_ext_adv_enable), 3946 HCI_CC_STATUS(HCI_OP_LE_SET_ADV_SET_RAND_ADDR, 3947 hci_cc_le_set_adv_set_random_addr), 3948 HCI_CC_STATUS(HCI_OP_LE_REMOVE_ADV_SET, hci_cc_le_remove_adv_set), 3949 HCI_CC_STATUS(HCI_OP_LE_CLEAR_ADV_SETS, hci_cc_le_clear_adv_sets), 3950 HCI_CC(HCI_OP_LE_READ_TRANSMIT_POWER, hci_cc_le_read_transmit_power, 3951 sizeof(struct hci_rp_le_read_transmit_power)), 3952 HCI_CC_STATUS(HCI_OP_LE_SET_PRIVACY_MODE, hci_cc_le_set_privacy_mode) 3953 }; 3954 3955 static u8 hci_cc_func(struct hci_dev *hdev, const struct hci_cc *cc, 3956 struct sk_buff *skb) 3957 { 3958 void *data; 3959 3960 if (skb->len < cc->min_len) { 3961 bt_dev_err(hdev, "unexpected cc 0x%4.4x length: %u < %u", 3962 cc->op, skb->len, cc->min_len); 3963 return HCI_ERROR_UNSPECIFIED; 3964 } 3965 3966 /* Just warn if the length is over max_len size it still be possible to 3967 * partially parse the cc so leave to callback to decide if that is 3968 * acceptable. 3969 */ 3970 if (skb->len > cc->max_len) 3971 bt_dev_warn(hdev, "unexpected cc 0x%4.4x length: %u > %u", 3972 cc->op, skb->len, cc->max_len); 3973 3974 data = hci_cc_skb_pull(hdev, skb, cc->op, cc->min_len); 3975 if (!data) 3976 return HCI_ERROR_UNSPECIFIED; 3977 3978 return cc->func(hdev, data, skb); 3979 } 3980 3981 static void hci_cmd_complete_evt(struct hci_dev *hdev, void *data, 3982 struct sk_buff *skb, u16 *opcode, u8 *status, 3983 hci_req_complete_t *req_complete, 3984 hci_req_complete_skb_t *req_complete_skb) 3985 { 3986 struct hci_ev_cmd_complete *ev = data; 3987 int i; 3988 3989 *opcode = __le16_to_cpu(ev->opcode); 3990 3991 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 3992 3993 for (i = 0; i < ARRAY_SIZE(hci_cc_table); i++) { 3994 if (hci_cc_table[i].op == *opcode) { 3995 *status = hci_cc_func(hdev, &hci_cc_table[i], skb); 3996 break; 3997 } 3998 } 3999 4000 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4001 4002 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 4003 req_complete_skb); 4004 4005 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4006 bt_dev_err(hdev, 4007 "unexpected event for opcode 0x%4.4x", *opcode); 4008 return; 4009 } 4010 4011 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4012 queue_work(hdev->workqueue, &hdev->cmd_work); 4013 } 4014 4015 #define HCI_CS(_op, _func) \ 4016 { \ 4017 .op = _op, \ 4018 .func = _func, \ 4019 } 4020 4021 static const struct hci_cs { 4022 u16 op; 4023 void (*func)(struct hci_dev *hdev, __u8 status); 4024 } hci_cs_table[] = { 4025 HCI_CS(HCI_OP_INQUIRY, hci_cs_inquiry), 4026 HCI_CS(HCI_OP_CREATE_CONN, hci_cs_create_conn), 4027 HCI_CS(HCI_OP_DISCONNECT, hci_cs_disconnect), 4028 HCI_CS(HCI_OP_ADD_SCO, hci_cs_add_sco), 4029 HCI_CS(HCI_OP_AUTH_REQUESTED, hci_cs_auth_requested), 4030 HCI_CS(HCI_OP_SET_CONN_ENCRYPT, hci_cs_set_conn_encrypt), 4031 HCI_CS(HCI_OP_REMOTE_NAME_REQ, hci_cs_remote_name_req), 4032 HCI_CS(HCI_OP_READ_REMOTE_FEATURES, hci_cs_read_remote_features), 4033 HCI_CS(HCI_OP_READ_REMOTE_EXT_FEATURES, 4034 hci_cs_read_remote_ext_features), 4035 HCI_CS(HCI_OP_SETUP_SYNC_CONN, hci_cs_setup_sync_conn), 4036 HCI_CS(HCI_OP_ENHANCED_SETUP_SYNC_CONN, 4037 hci_cs_enhanced_setup_sync_conn), 4038 HCI_CS(HCI_OP_SNIFF_MODE, hci_cs_sniff_mode), 4039 HCI_CS(HCI_OP_EXIT_SNIFF_MODE, hci_cs_exit_sniff_mode), 4040 HCI_CS(HCI_OP_SWITCH_ROLE, hci_cs_switch_role), 4041 HCI_CS(HCI_OP_LE_CREATE_CONN, hci_cs_le_create_conn), 4042 HCI_CS(HCI_OP_LE_READ_REMOTE_FEATURES, hci_cs_le_read_remote_features), 4043 HCI_CS(HCI_OP_LE_START_ENC, hci_cs_le_start_enc), 4044 HCI_CS(HCI_OP_LE_EXT_CREATE_CONN, hci_cs_le_ext_create_conn) 4045 }; 4046 4047 static void hci_cmd_status_evt(struct hci_dev *hdev, void *data, 4048 struct sk_buff *skb, u16 *opcode, u8 *status, 4049 hci_req_complete_t *req_complete, 4050 hci_req_complete_skb_t *req_complete_skb) 4051 { 4052 struct hci_ev_cmd_status *ev = data; 4053 int i; 4054 4055 *opcode = __le16_to_cpu(ev->opcode); 4056 *status = ev->status; 4057 4058 bt_dev_dbg(hdev, "opcode 0x%4.4x", *opcode); 4059 4060 for (i = 0; i < ARRAY_SIZE(hci_cs_table); i++) { 4061 if (hci_cs_table[i].op == *opcode) { 4062 hci_cs_table[i].func(hdev, ev->status); 4063 break; 4064 } 4065 } 4066 4067 handle_cmd_cnt_and_timer(hdev, ev->ncmd); 4068 4069 /* Indicate request completion if the command failed. Also, if 4070 * we're not waiting for a special event and we get a success 4071 * command status we should try to flag the request as completed 4072 * (since for this kind of commands there will not be a command 4073 * complete event). 4074 */ 4075 if (ev->status || (hdev->sent_cmd && !hci_skb_event(hdev->sent_cmd))) { 4076 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 4077 req_complete_skb); 4078 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 4079 bt_dev_err(hdev, "unexpected event for opcode 0x%4.4x", 4080 *opcode); 4081 return; 4082 } 4083 } 4084 4085 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 4086 queue_work(hdev->workqueue, &hdev->cmd_work); 4087 } 4088 4089 static void hci_hardware_error_evt(struct hci_dev *hdev, void *data, 4090 struct sk_buff *skb) 4091 { 4092 struct hci_ev_hardware_error *ev = data; 4093 4094 bt_dev_dbg(hdev, "code 0x%2.2x", ev->code); 4095 4096 hdev->hw_error_code = ev->code; 4097 4098 queue_work(hdev->req_workqueue, &hdev->error_reset); 4099 } 4100 4101 static void hci_role_change_evt(struct hci_dev *hdev, void *data, 4102 struct sk_buff *skb) 4103 { 4104 struct hci_ev_role_change *ev = data; 4105 struct hci_conn *conn; 4106 4107 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4108 4109 hci_dev_lock(hdev); 4110 4111 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4112 if (conn) { 4113 if (!ev->status) 4114 conn->role = ev->role; 4115 4116 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 4117 4118 hci_role_switch_cfm(conn, ev->status, ev->role); 4119 } 4120 4121 hci_dev_unlock(hdev); 4122 } 4123 4124 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, void *data, 4125 struct sk_buff *skb) 4126 { 4127 struct hci_ev_num_comp_pkts *ev = data; 4128 int i; 4129 4130 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_PKTS, 4131 flex_array_size(ev, handles, ev->num))) 4132 return; 4133 4134 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) { 4135 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode); 4136 return; 4137 } 4138 4139 bt_dev_dbg(hdev, "num %d", ev->num); 4140 4141 for (i = 0; i < ev->num; i++) { 4142 struct hci_comp_pkts_info *info = &ev->handles[i]; 4143 struct hci_conn *conn; 4144 __u16 handle, count; 4145 4146 handle = __le16_to_cpu(info->handle); 4147 count = __le16_to_cpu(info->count); 4148 4149 conn = hci_conn_hash_lookup_handle(hdev, handle); 4150 if (!conn) 4151 continue; 4152 4153 conn->sent -= count; 4154 4155 switch (conn->type) { 4156 case ACL_LINK: 4157 hdev->acl_cnt += count; 4158 if (hdev->acl_cnt > hdev->acl_pkts) 4159 hdev->acl_cnt = hdev->acl_pkts; 4160 break; 4161 4162 case LE_LINK: 4163 if (hdev->le_pkts) { 4164 hdev->le_cnt += count; 4165 if (hdev->le_cnt > hdev->le_pkts) 4166 hdev->le_cnt = hdev->le_pkts; 4167 } else { 4168 hdev->acl_cnt += count; 4169 if (hdev->acl_cnt > hdev->acl_pkts) 4170 hdev->acl_cnt = hdev->acl_pkts; 4171 } 4172 break; 4173 4174 case SCO_LINK: 4175 hdev->sco_cnt += count; 4176 if (hdev->sco_cnt > hdev->sco_pkts) 4177 hdev->sco_cnt = hdev->sco_pkts; 4178 break; 4179 4180 default: 4181 bt_dev_err(hdev, "unknown type %d conn %p", 4182 conn->type, conn); 4183 break; 4184 } 4185 } 4186 4187 queue_work(hdev->workqueue, &hdev->tx_work); 4188 } 4189 4190 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev, 4191 __u16 handle) 4192 { 4193 struct hci_chan *chan; 4194 4195 switch (hdev->dev_type) { 4196 case HCI_PRIMARY: 4197 return hci_conn_hash_lookup_handle(hdev, handle); 4198 case HCI_AMP: 4199 chan = hci_chan_lookup_handle(hdev, handle); 4200 if (chan) 4201 return chan->conn; 4202 break; 4203 default: 4204 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); 4205 break; 4206 } 4207 4208 return NULL; 4209 } 4210 4211 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, void *data, 4212 struct sk_buff *skb) 4213 { 4214 struct hci_ev_num_comp_blocks *ev = data; 4215 int i; 4216 4217 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_NUM_COMP_BLOCKS, 4218 flex_array_size(ev, handles, ev->num_hndl))) 4219 return; 4220 4221 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) { 4222 bt_dev_err(hdev, "wrong event for mode %d", 4223 hdev->flow_ctl_mode); 4224 return; 4225 } 4226 4227 bt_dev_dbg(hdev, "num_blocks %d num_hndl %d", ev->num_blocks, 4228 ev->num_hndl); 4229 4230 for (i = 0; i < ev->num_hndl; i++) { 4231 struct hci_comp_blocks_info *info = &ev->handles[i]; 4232 struct hci_conn *conn = NULL; 4233 __u16 handle, block_count; 4234 4235 handle = __le16_to_cpu(info->handle); 4236 block_count = __le16_to_cpu(info->blocks); 4237 4238 conn = __hci_conn_lookup_handle(hdev, handle); 4239 if (!conn) 4240 continue; 4241 4242 conn->sent -= block_count; 4243 4244 switch (conn->type) { 4245 case ACL_LINK: 4246 case AMP_LINK: 4247 hdev->block_cnt += block_count; 4248 if (hdev->block_cnt > hdev->num_blocks) 4249 hdev->block_cnt = hdev->num_blocks; 4250 break; 4251 4252 default: 4253 bt_dev_err(hdev, "unknown type %d conn %p", 4254 conn->type, conn); 4255 break; 4256 } 4257 } 4258 4259 queue_work(hdev->workqueue, &hdev->tx_work); 4260 } 4261 4262 static void hci_mode_change_evt(struct hci_dev *hdev, void *data, 4263 struct sk_buff *skb) 4264 { 4265 struct hci_ev_mode_change *ev = data; 4266 struct hci_conn *conn; 4267 4268 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4269 4270 hci_dev_lock(hdev); 4271 4272 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4273 if (conn) { 4274 conn->mode = ev->mode; 4275 4276 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 4277 &conn->flags)) { 4278 if (conn->mode == HCI_CM_ACTIVE) 4279 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4280 else 4281 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 4282 } 4283 4284 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 4285 hci_sco_setup(conn, ev->status); 4286 } 4287 4288 hci_dev_unlock(hdev); 4289 } 4290 4291 static void hci_pin_code_request_evt(struct hci_dev *hdev, void *data, 4292 struct sk_buff *skb) 4293 { 4294 struct hci_ev_pin_code_req *ev = data; 4295 struct hci_conn *conn; 4296 4297 bt_dev_dbg(hdev, ""); 4298 4299 hci_dev_lock(hdev); 4300 4301 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4302 if (!conn) 4303 goto unlock; 4304 4305 if (conn->state == BT_CONNECTED) { 4306 hci_conn_hold(conn); 4307 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 4308 hci_conn_drop(conn); 4309 } 4310 4311 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 4312 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 4313 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 4314 sizeof(ev->bdaddr), &ev->bdaddr); 4315 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 4316 u8 secure; 4317 4318 if (conn->pending_sec_level == BT_SECURITY_HIGH) 4319 secure = 1; 4320 else 4321 secure = 0; 4322 4323 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 4324 } 4325 4326 unlock: 4327 hci_dev_unlock(hdev); 4328 } 4329 4330 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 4331 { 4332 if (key_type == HCI_LK_CHANGED_COMBINATION) 4333 return; 4334 4335 conn->pin_length = pin_len; 4336 conn->key_type = key_type; 4337 4338 switch (key_type) { 4339 case HCI_LK_LOCAL_UNIT: 4340 case HCI_LK_REMOTE_UNIT: 4341 case HCI_LK_DEBUG_COMBINATION: 4342 return; 4343 case HCI_LK_COMBINATION: 4344 if (pin_len == 16) 4345 conn->pending_sec_level = BT_SECURITY_HIGH; 4346 else 4347 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4348 break; 4349 case HCI_LK_UNAUTH_COMBINATION_P192: 4350 case HCI_LK_UNAUTH_COMBINATION_P256: 4351 conn->pending_sec_level = BT_SECURITY_MEDIUM; 4352 break; 4353 case HCI_LK_AUTH_COMBINATION_P192: 4354 conn->pending_sec_level = BT_SECURITY_HIGH; 4355 break; 4356 case HCI_LK_AUTH_COMBINATION_P256: 4357 conn->pending_sec_level = BT_SECURITY_FIPS; 4358 break; 4359 } 4360 } 4361 4362 static void hci_link_key_request_evt(struct hci_dev *hdev, void *data, 4363 struct sk_buff *skb) 4364 { 4365 struct hci_ev_link_key_req *ev = data; 4366 struct hci_cp_link_key_reply cp; 4367 struct hci_conn *conn; 4368 struct link_key *key; 4369 4370 bt_dev_dbg(hdev, ""); 4371 4372 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4373 return; 4374 4375 hci_dev_lock(hdev); 4376 4377 key = hci_find_link_key(hdev, &ev->bdaddr); 4378 if (!key) { 4379 bt_dev_dbg(hdev, "link key not found for %pMR", &ev->bdaddr); 4380 goto not_found; 4381 } 4382 4383 bt_dev_dbg(hdev, "found key type %u for %pMR", key->type, &ev->bdaddr); 4384 4385 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4386 if (conn) { 4387 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4388 4389 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 4390 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 4391 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4392 bt_dev_dbg(hdev, "ignoring unauthenticated key"); 4393 goto not_found; 4394 } 4395 4396 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4397 (conn->pending_sec_level == BT_SECURITY_HIGH || 4398 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4399 bt_dev_dbg(hdev, "ignoring key unauthenticated for high security"); 4400 goto not_found; 4401 } 4402 4403 conn_set_key(conn, key->type, key->pin_len); 4404 } 4405 4406 bacpy(&cp.bdaddr, &ev->bdaddr); 4407 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4408 4409 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4410 4411 hci_dev_unlock(hdev); 4412 4413 return; 4414 4415 not_found: 4416 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4417 hci_dev_unlock(hdev); 4418 } 4419 4420 static void hci_link_key_notify_evt(struct hci_dev *hdev, void *data, 4421 struct sk_buff *skb) 4422 { 4423 struct hci_ev_link_key_notify *ev = data; 4424 struct hci_conn *conn; 4425 struct link_key *key; 4426 bool persistent; 4427 u8 pin_len = 0; 4428 4429 bt_dev_dbg(hdev, ""); 4430 4431 hci_dev_lock(hdev); 4432 4433 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4434 if (!conn) 4435 goto unlock; 4436 4437 hci_conn_hold(conn); 4438 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4439 hci_conn_drop(conn); 4440 4441 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4442 conn_set_key(conn, ev->key_type, conn->pin_length); 4443 4444 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4445 goto unlock; 4446 4447 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4448 ev->key_type, pin_len, &persistent); 4449 if (!key) 4450 goto unlock; 4451 4452 /* Update connection information since adding the key will have 4453 * fixed up the type in the case of changed combination keys. 4454 */ 4455 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4456 conn_set_key(conn, key->type, key->pin_len); 4457 4458 mgmt_new_link_key(hdev, key, persistent); 4459 4460 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4461 * is set. If it's not set simply remove the key from the kernel 4462 * list (we've still notified user space about it but with 4463 * store_hint being 0). 4464 */ 4465 if (key->type == HCI_LK_DEBUG_COMBINATION && 4466 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4467 list_del_rcu(&key->list); 4468 kfree_rcu(key, rcu); 4469 goto unlock; 4470 } 4471 4472 if (persistent) 4473 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4474 else 4475 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4476 4477 unlock: 4478 hci_dev_unlock(hdev); 4479 } 4480 4481 static void hci_clock_offset_evt(struct hci_dev *hdev, void *data, 4482 struct sk_buff *skb) 4483 { 4484 struct hci_ev_clock_offset *ev = data; 4485 struct hci_conn *conn; 4486 4487 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4488 4489 hci_dev_lock(hdev); 4490 4491 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4492 if (conn && !ev->status) { 4493 struct inquiry_entry *ie; 4494 4495 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4496 if (ie) { 4497 ie->data.clock_offset = ev->clock_offset; 4498 ie->timestamp = jiffies; 4499 } 4500 } 4501 4502 hci_dev_unlock(hdev); 4503 } 4504 4505 static void hci_pkt_type_change_evt(struct hci_dev *hdev, void *data, 4506 struct sk_buff *skb) 4507 { 4508 struct hci_ev_pkt_type_change *ev = data; 4509 struct hci_conn *conn; 4510 4511 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4512 4513 hci_dev_lock(hdev); 4514 4515 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4516 if (conn && !ev->status) 4517 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4518 4519 hci_dev_unlock(hdev); 4520 } 4521 4522 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, void *data, 4523 struct sk_buff *skb) 4524 { 4525 struct hci_ev_pscan_rep_mode *ev = data; 4526 struct inquiry_entry *ie; 4527 4528 bt_dev_dbg(hdev, ""); 4529 4530 hci_dev_lock(hdev); 4531 4532 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4533 if (ie) { 4534 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4535 ie->timestamp = jiffies; 4536 } 4537 4538 hci_dev_unlock(hdev); 4539 } 4540 4541 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, void *edata, 4542 struct sk_buff *skb) 4543 { 4544 struct hci_ev_inquiry_result_rssi *ev = edata; 4545 struct inquiry_data data; 4546 int i; 4547 4548 bt_dev_dbg(hdev, "num_rsp %d", ev->num); 4549 4550 if (!ev->num) 4551 return; 4552 4553 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4554 return; 4555 4556 hci_dev_lock(hdev); 4557 4558 if (skb->len == array_size(ev->num, 4559 sizeof(struct inquiry_info_rssi_pscan))) { 4560 struct inquiry_info_rssi_pscan *info; 4561 4562 for (i = 0; i < ev->num; i++) { 4563 u32 flags; 4564 4565 info = hci_ev_skb_pull(hdev, skb, 4566 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4567 sizeof(*info)); 4568 if (!info) { 4569 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4570 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4571 goto unlock; 4572 } 4573 4574 bacpy(&data.bdaddr, &info->bdaddr); 4575 data.pscan_rep_mode = info->pscan_rep_mode; 4576 data.pscan_period_mode = info->pscan_period_mode; 4577 data.pscan_mode = info->pscan_mode; 4578 memcpy(data.dev_class, info->dev_class, 3); 4579 data.clock_offset = info->clock_offset; 4580 data.rssi = info->rssi; 4581 data.ssp_mode = 0x00; 4582 4583 flags = hci_inquiry_cache_update(hdev, &data, false); 4584 4585 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4586 info->dev_class, info->rssi, 4587 flags, NULL, 0, NULL, 0); 4588 } 4589 } else if (skb->len == array_size(ev->num, 4590 sizeof(struct inquiry_info_rssi))) { 4591 struct inquiry_info_rssi *info; 4592 4593 for (i = 0; i < ev->num; i++) { 4594 u32 flags; 4595 4596 info = hci_ev_skb_pull(hdev, skb, 4597 HCI_EV_INQUIRY_RESULT_WITH_RSSI, 4598 sizeof(*info)); 4599 if (!info) { 4600 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4601 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4602 goto unlock; 4603 } 4604 4605 bacpy(&data.bdaddr, &info->bdaddr); 4606 data.pscan_rep_mode = info->pscan_rep_mode; 4607 data.pscan_period_mode = info->pscan_period_mode; 4608 data.pscan_mode = 0x00; 4609 memcpy(data.dev_class, info->dev_class, 3); 4610 data.clock_offset = info->clock_offset; 4611 data.rssi = info->rssi; 4612 data.ssp_mode = 0x00; 4613 4614 flags = hci_inquiry_cache_update(hdev, &data, false); 4615 4616 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4617 info->dev_class, info->rssi, 4618 flags, NULL, 0, NULL, 0); 4619 } 4620 } else { 4621 bt_dev_err(hdev, "Malformed HCI Event: 0x%2.2x", 4622 HCI_EV_INQUIRY_RESULT_WITH_RSSI); 4623 } 4624 unlock: 4625 hci_dev_unlock(hdev); 4626 } 4627 4628 static void hci_remote_ext_features_evt(struct hci_dev *hdev, void *data, 4629 struct sk_buff *skb) 4630 { 4631 struct hci_ev_remote_ext_features *ev = data; 4632 struct hci_conn *conn; 4633 4634 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 4635 4636 hci_dev_lock(hdev); 4637 4638 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4639 if (!conn) 4640 goto unlock; 4641 4642 if (ev->page < HCI_MAX_PAGES) 4643 memcpy(conn->features[ev->page], ev->features, 8); 4644 4645 if (!ev->status && ev->page == 0x01) { 4646 struct inquiry_entry *ie; 4647 4648 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4649 if (ie) 4650 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4651 4652 if (ev->features[0] & LMP_HOST_SSP) { 4653 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4654 } else { 4655 /* It is mandatory by the Bluetooth specification that 4656 * Extended Inquiry Results are only used when Secure 4657 * Simple Pairing is enabled, but some devices violate 4658 * this. 4659 * 4660 * To make these devices work, the internal SSP 4661 * enabled flag needs to be cleared if the remote host 4662 * features do not indicate SSP support */ 4663 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4664 } 4665 4666 if (ev->features[0] & LMP_HOST_SC) 4667 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4668 } 4669 4670 if (conn->state != BT_CONFIG) 4671 goto unlock; 4672 4673 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4674 struct hci_cp_remote_name_req cp; 4675 memset(&cp, 0, sizeof(cp)); 4676 bacpy(&cp.bdaddr, &conn->dst); 4677 cp.pscan_rep_mode = 0x02; 4678 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4679 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 4680 mgmt_device_connected(hdev, conn, NULL, 0); 4681 4682 if (!hci_outgoing_auth_needed(hdev, conn)) { 4683 conn->state = BT_CONNECTED; 4684 hci_connect_cfm(conn, ev->status); 4685 hci_conn_drop(conn); 4686 } 4687 4688 unlock: 4689 hci_dev_unlock(hdev); 4690 } 4691 4692 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, void *data, 4693 struct sk_buff *skb) 4694 { 4695 struct hci_ev_sync_conn_complete *ev = data; 4696 struct hci_conn *conn; 4697 u8 status = ev->status; 4698 4699 switch (ev->link_type) { 4700 case SCO_LINK: 4701 case ESCO_LINK: 4702 break; 4703 default: 4704 /* As per Core 5.3 Vol 4 Part E 7.7.35 (p.2219), Link_Type 4705 * for HCI_Synchronous_Connection_Complete is limited to 4706 * either SCO or eSCO 4707 */ 4708 bt_dev_err(hdev, "Ignoring connect complete event for invalid link type"); 4709 return; 4710 } 4711 4712 bt_dev_dbg(hdev, "status 0x%2.2x", status); 4713 4714 hci_dev_lock(hdev); 4715 4716 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4717 if (!conn) { 4718 if (ev->link_type == ESCO_LINK) 4719 goto unlock; 4720 4721 /* When the link type in the event indicates SCO connection 4722 * and lookup of the connection object fails, then check 4723 * if an eSCO connection object exists. 4724 * 4725 * The core limits the synchronous connections to either 4726 * SCO or eSCO. The eSCO connection is preferred and tried 4727 * to be setup first and until successfully established, 4728 * the link type will be hinted as eSCO. 4729 */ 4730 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4731 if (!conn) 4732 goto unlock; 4733 } 4734 4735 /* The HCI_Synchronous_Connection_Complete event is only sent once per connection. 4736 * Processing it more than once per connection can corrupt kernel memory. 4737 * 4738 * As the connection handle is set here for the first time, it indicates 4739 * whether the connection is already set up. 4740 */ 4741 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 4742 bt_dev_err(hdev, "Ignoring HCI_Sync_Conn_Complete event for existing connection"); 4743 goto unlock; 4744 } 4745 4746 switch (status) { 4747 case 0x00: 4748 conn->handle = __le16_to_cpu(ev->handle); 4749 if (conn->handle > HCI_CONN_HANDLE_MAX) { 4750 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", 4751 conn->handle, HCI_CONN_HANDLE_MAX); 4752 status = HCI_ERROR_INVALID_PARAMETERS; 4753 conn->state = BT_CLOSED; 4754 break; 4755 } 4756 4757 conn->state = BT_CONNECTED; 4758 conn->type = ev->link_type; 4759 4760 hci_debugfs_create_conn(conn); 4761 hci_conn_add_sysfs(conn); 4762 break; 4763 4764 case 0x10: /* Connection Accept Timeout */ 4765 case 0x0d: /* Connection Rejected due to Limited Resources */ 4766 case 0x11: /* Unsupported Feature or Parameter Value */ 4767 case 0x1c: /* SCO interval rejected */ 4768 case 0x1a: /* Unsupported Remote Feature */ 4769 case 0x1e: /* Invalid LMP Parameters */ 4770 case 0x1f: /* Unspecified error */ 4771 case 0x20: /* Unsupported LMP Parameter value */ 4772 if (conn->out) { 4773 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 4774 (hdev->esco_type & EDR_ESCO_MASK); 4775 if (hci_setup_sync(conn, conn->link->handle)) 4776 goto unlock; 4777 } 4778 fallthrough; 4779 4780 default: 4781 conn->state = BT_CLOSED; 4782 break; 4783 } 4784 4785 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 4786 /* Notify only in case of SCO over HCI transport data path which 4787 * is zero and non-zero value shall be non-HCI transport data path 4788 */ 4789 if (conn->codec.data_path == 0 && hdev->notify) { 4790 switch (ev->air_mode) { 4791 case 0x02: 4792 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 4793 break; 4794 case 0x03: 4795 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 4796 break; 4797 } 4798 } 4799 4800 hci_connect_cfm(conn, status); 4801 if (status) 4802 hci_conn_del(conn); 4803 4804 unlock: 4805 hci_dev_unlock(hdev); 4806 } 4807 4808 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 4809 { 4810 size_t parsed = 0; 4811 4812 while (parsed < eir_len) { 4813 u8 field_len = eir[0]; 4814 4815 if (field_len == 0) 4816 return parsed; 4817 4818 parsed += field_len + 1; 4819 eir += field_len + 1; 4820 } 4821 4822 return eir_len; 4823 } 4824 4825 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, void *edata, 4826 struct sk_buff *skb) 4827 { 4828 struct hci_ev_ext_inquiry_result *ev = edata; 4829 struct inquiry_data data; 4830 size_t eir_len; 4831 int i; 4832 4833 if (!hci_ev_skb_pull(hdev, skb, HCI_EV_EXTENDED_INQUIRY_RESULT, 4834 flex_array_size(ev, info, ev->num))) 4835 return; 4836 4837 bt_dev_dbg(hdev, "num %d", ev->num); 4838 4839 if (!ev->num) 4840 return; 4841 4842 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4843 return; 4844 4845 hci_dev_lock(hdev); 4846 4847 for (i = 0; i < ev->num; i++) { 4848 struct extended_inquiry_info *info = &ev->info[i]; 4849 u32 flags; 4850 bool name_known; 4851 4852 bacpy(&data.bdaddr, &info->bdaddr); 4853 data.pscan_rep_mode = info->pscan_rep_mode; 4854 data.pscan_period_mode = info->pscan_period_mode; 4855 data.pscan_mode = 0x00; 4856 memcpy(data.dev_class, info->dev_class, 3); 4857 data.clock_offset = info->clock_offset; 4858 data.rssi = info->rssi; 4859 data.ssp_mode = 0x01; 4860 4861 if (hci_dev_test_flag(hdev, HCI_MGMT)) 4862 name_known = eir_get_data(info->data, 4863 sizeof(info->data), 4864 EIR_NAME_COMPLETE, NULL); 4865 else 4866 name_known = true; 4867 4868 flags = hci_inquiry_cache_update(hdev, &data, name_known); 4869 4870 eir_len = eir_get_length(info->data, sizeof(info->data)); 4871 4872 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4873 info->dev_class, info->rssi, 4874 flags, info->data, eir_len, NULL, 0); 4875 } 4876 4877 hci_dev_unlock(hdev); 4878 } 4879 4880 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, void *data, 4881 struct sk_buff *skb) 4882 { 4883 struct hci_ev_key_refresh_complete *ev = data; 4884 struct hci_conn *conn; 4885 4886 bt_dev_dbg(hdev, "status 0x%2.2x handle 0x%4.4x", ev->status, 4887 __le16_to_cpu(ev->handle)); 4888 4889 hci_dev_lock(hdev); 4890 4891 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4892 if (!conn) 4893 goto unlock; 4894 4895 /* For BR/EDR the necessary steps are taken through the 4896 * auth_complete event. 4897 */ 4898 if (conn->type != LE_LINK) 4899 goto unlock; 4900 4901 if (!ev->status) 4902 conn->sec_level = conn->pending_sec_level; 4903 4904 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 4905 4906 if (ev->status && conn->state == BT_CONNECTED) { 4907 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4908 hci_conn_drop(conn); 4909 goto unlock; 4910 } 4911 4912 if (conn->state == BT_CONFIG) { 4913 if (!ev->status) 4914 conn->state = BT_CONNECTED; 4915 4916 hci_connect_cfm(conn, ev->status); 4917 hci_conn_drop(conn); 4918 } else { 4919 hci_auth_cfm(conn, ev->status); 4920 4921 hci_conn_hold(conn); 4922 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4923 hci_conn_drop(conn); 4924 } 4925 4926 unlock: 4927 hci_dev_unlock(hdev); 4928 } 4929 4930 static u8 hci_get_auth_req(struct hci_conn *conn) 4931 { 4932 /* If remote requests no-bonding follow that lead */ 4933 if (conn->remote_auth == HCI_AT_NO_BONDING || 4934 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 4935 return conn->remote_auth | (conn->auth_type & 0x01); 4936 4937 /* If both remote and local have enough IO capabilities, require 4938 * MITM protection 4939 */ 4940 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 4941 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 4942 return conn->remote_auth | 0x01; 4943 4944 /* No MITM protection possible so ignore remote requirement */ 4945 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 4946 } 4947 4948 static u8 bredr_oob_data_present(struct hci_conn *conn) 4949 { 4950 struct hci_dev *hdev = conn->hdev; 4951 struct oob_data *data; 4952 4953 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 4954 if (!data) 4955 return 0x00; 4956 4957 if (bredr_sc_enabled(hdev)) { 4958 /* When Secure Connections is enabled, then just 4959 * return the present value stored with the OOB 4960 * data. The stored value contains the right present 4961 * information. However it can only be trusted when 4962 * not in Secure Connection Only mode. 4963 */ 4964 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 4965 return data->present; 4966 4967 /* When Secure Connections Only mode is enabled, then 4968 * the P-256 values are required. If they are not 4969 * available, then do not declare that OOB data is 4970 * present. 4971 */ 4972 if (!memcmp(data->rand256, ZERO_KEY, 16) || 4973 !memcmp(data->hash256, ZERO_KEY, 16)) 4974 return 0x00; 4975 4976 return 0x02; 4977 } 4978 4979 /* When Secure Connections is not enabled or actually 4980 * not supported by the hardware, then check that if 4981 * P-192 data values are present. 4982 */ 4983 if (!memcmp(data->rand192, ZERO_KEY, 16) || 4984 !memcmp(data->hash192, ZERO_KEY, 16)) 4985 return 0x00; 4986 4987 return 0x01; 4988 } 4989 4990 static void hci_io_capa_request_evt(struct hci_dev *hdev, void *data, 4991 struct sk_buff *skb) 4992 { 4993 struct hci_ev_io_capa_request *ev = data; 4994 struct hci_conn *conn; 4995 4996 bt_dev_dbg(hdev, ""); 4997 4998 hci_dev_lock(hdev); 4999 5000 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5001 if (!conn) 5002 goto unlock; 5003 5004 hci_conn_hold(conn); 5005 5006 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5007 goto unlock; 5008 5009 /* Allow pairing if we're pairable, the initiators of the 5010 * pairing or if the remote is not requesting bonding. 5011 */ 5012 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 5013 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 5014 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 5015 struct hci_cp_io_capability_reply cp; 5016 5017 bacpy(&cp.bdaddr, &ev->bdaddr); 5018 /* Change the IO capability from KeyboardDisplay 5019 * to DisplayYesNo as it is not supported by BT spec. */ 5020 cp.capability = (conn->io_capability == 0x04) ? 5021 HCI_IO_DISPLAY_YESNO : conn->io_capability; 5022 5023 /* If we are initiators, there is no remote information yet */ 5024 if (conn->remote_auth == 0xff) { 5025 /* Request MITM protection if our IO caps allow it 5026 * except for the no-bonding case. 5027 */ 5028 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5029 conn->auth_type != HCI_AT_NO_BONDING) 5030 conn->auth_type |= 0x01; 5031 } else { 5032 conn->auth_type = hci_get_auth_req(conn); 5033 } 5034 5035 /* If we're not bondable, force one of the non-bondable 5036 * authentication requirement values. 5037 */ 5038 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 5039 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 5040 5041 cp.authentication = conn->auth_type; 5042 cp.oob_data = bredr_oob_data_present(conn); 5043 5044 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 5045 sizeof(cp), &cp); 5046 } else { 5047 struct hci_cp_io_capability_neg_reply cp; 5048 5049 bacpy(&cp.bdaddr, &ev->bdaddr); 5050 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 5051 5052 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 5053 sizeof(cp), &cp); 5054 } 5055 5056 unlock: 5057 hci_dev_unlock(hdev); 5058 } 5059 5060 static void hci_io_capa_reply_evt(struct hci_dev *hdev, void *data, 5061 struct sk_buff *skb) 5062 { 5063 struct hci_ev_io_capa_reply *ev = data; 5064 struct hci_conn *conn; 5065 5066 bt_dev_dbg(hdev, ""); 5067 5068 hci_dev_lock(hdev); 5069 5070 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5071 if (!conn) 5072 goto unlock; 5073 5074 conn->remote_cap = ev->capability; 5075 conn->remote_auth = ev->authentication; 5076 5077 unlock: 5078 hci_dev_unlock(hdev); 5079 } 5080 5081 static void hci_user_confirm_request_evt(struct hci_dev *hdev, void *data, 5082 struct sk_buff *skb) 5083 { 5084 struct hci_ev_user_confirm_req *ev = data; 5085 int loc_mitm, rem_mitm, confirm_hint = 0; 5086 struct hci_conn *conn; 5087 5088 bt_dev_dbg(hdev, ""); 5089 5090 hci_dev_lock(hdev); 5091 5092 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5093 goto unlock; 5094 5095 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5096 if (!conn) 5097 goto unlock; 5098 5099 loc_mitm = (conn->auth_type & 0x01); 5100 rem_mitm = (conn->remote_auth & 0x01); 5101 5102 /* If we require MITM but the remote device can't provide that 5103 * (it has NoInputNoOutput) then reject the confirmation 5104 * request. We check the security level here since it doesn't 5105 * necessarily match conn->auth_type. 5106 */ 5107 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 5108 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 5109 bt_dev_dbg(hdev, "Rejecting request: remote device can't provide MITM"); 5110 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 5111 sizeof(ev->bdaddr), &ev->bdaddr); 5112 goto unlock; 5113 } 5114 5115 /* If no side requires MITM protection; auto-accept */ 5116 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 5117 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 5118 5119 /* If we're not the initiators request authorization to 5120 * proceed from user space (mgmt_user_confirm with 5121 * confirm_hint set to 1). The exception is if neither 5122 * side had MITM or if the local IO capability is 5123 * NoInputNoOutput, in which case we do auto-accept 5124 */ 5125 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 5126 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 5127 (loc_mitm || rem_mitm)) { 5128 bt_dev_dbg(hdev, "Confirming auto-accept as acceptor"); 5129 confirm_hint = 1; 5130 goto confirm; 5131 } 5132 5133 /* If there already exists link key in local host, leave the 5134 * decision to user space since the remote device could be 5135 * legitimate or malicious. 5136 */ 5137 if (hci_find_link_key(hdev, &ev->bdaddr)) { 5138 bt_dev_dbg(hdev, "Local host already has link key"); 5139 confirm_hint = 1; 5140 goto confirm; 5141 } 5142 5143 BT_DBG("Auto-accept of user confirmation with %ums delay", 5144 hdev->auto_accept_delay); 5145 5146 if (hdev->auto_accept_delay > 0) { 5147 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 5148 queue_delayed_work(conn->hdev->workqueue, 5149 &conn->auto_accept_work, delay); 5150 goto unlock; 5151 } 5152 5153 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 5154 sizeof(ev->bdaddr), &ev->bdaddr); 5155 goto unlock; 5156 } 5157 5158 confirm: 5159 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 5160 le32_to_cpu(ev->passkey), confirm_hint); 5161 5162 unlock: 5163 hci_dev_unlock(hdev); 5164 } 5165 5166 static void hci_user_passkey_request_evt(struct hci_dev *hdev, void *data, 5167 struct sk_buff *skb) 5168 { 5169 struct hci_ev_user_passkey_req *ev = data; 5170 5171 bt_dev_dbg(hdev, ""); 5172 5173 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5174 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 5175 } 5176 5177 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, void *data, 5178 struct sk_buff *skb) 5179 { 5180 struct hci_ev_user_passkey_notify *ev = data; 5181 struct hci_conn *conn; 5182 5183 bt_dev_dbg(hdev, ""); 5184 5185 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5186 if (!conn) 5187 return; 5188 5189 conn->passkey_notify = __le32_to_cpu(ev->passkey); 5190 conn->passkey_entered = 0; 5191 5192 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5193 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5194 conn->dst_type, conn->passkey_notify, 5195 conn->passkey_entered); 5196 } 5197 5198 static void hci_keypress_notify_evt(struct hci_dev *hdev, void *data, 5199 struct sk_buff *skb) 5200 { 5201 struct hci_ev_keypress_notify *ev = data; 5202 struct hci_conn *conn; 5203 5204 bt_dev_dbg(hdev, ""); 5205 5206 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5207 if (!conn) 5208 return; 5209 5210 switch (ev->type) { 5211 case HCI_KEYPRESS_STARTED: 5212 conn->passkey_entered = 0; 5213 return; 5214 5215 case HCI_KEYPRESS_ENTERED: 5216 conn->passkey_entered++; 5217 break; 5218 5219 case HCI_KEYPRESS_ERASED: 5220 conn->passkey_entered--; 5221 break; 5222 5223 case HCI_KEYPRESS_CLEARED: 5224 conn->passkey_entered = 0; 5225 break; 5226 5227 case HCI_KEYPRESS_COMPLETED: 5228 return; 5229 } 5230 5231 if (hci_dev_test_flag(hdev, HCI_MGMT)) 5232 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 5233 conn->dst_type, conn->passkey_notify, 5234 conn->passkey_entered); 5235 } 5236 5237 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, void *data, 5238 struct sk_buff *skb) 5239 { 5240 struct hci_ev_simple_pair_complete *ev = data; 5241 struct hci_conn *conn; 5242 5243 bt_dev_dbg(hdev, ""); 5244 5245 hci_dev_lock(hdev); 5246 5247 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5248 if (!conn) 5249 goto unlock; 5250 5251 /* Reset the authentication requirement to unknown */ 5252 conn->remote_auth = 0xff; 5253 5254 /* To avoid duplicate auth_failed events to user space we check 5255 * the HCI_CONN_AUTH_PEND flag which will be set if we 5256 * initiated the authentication. A traditional auth_complete 5257 * event gets always produced as initiator and is also mapped to 5258 * the mgmt_auth_failed event */ 5259 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 5260 mgmt_auth_failed(conn, ev->status); 5261 5262 hci_conn_drop(conn); 5263 5264 unlock: 5265 hci_dev_unlock(hdev); 5266 } 5267 5268 static void hci_remote_host_features_evt(struct hci_dev *hdev, void *data, 5269 struct sk_buff *skb) 5270 { 5271 struct hci_ev_remote_host_features *ev = data; 5272 struct inquiry_entry *ie; 5273 struct hci_conn *conn; 5274 5275 bt_dev_dbg(hdev, ""); 5276 5277 hci_dev_lock(hdev); 5278 5279 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 5280 if (conn) 5281 memcpy(conn->features[1], ev->features, 8); 5282 5283 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 5284 if (ie) 5285 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 5286 5287 hci_dev_unlock(hdev); 5288 } 5289 5290 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, void *edata, 5291 struct sk_buff *skb) 5292 { 5293 struct hci_ev_remote_oob_data_request *ev = edata; 5294 struct oob_data *data; 5295 5296 bt_dev_dbg(hdev, ""); 5297 5298 hci_dev_lock(hdev); 5299 5300 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 5301 goto unlock; 5302 5303 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 5304 if (!data) { 5305 struct hci_cp_remote_oob_data_neg_reply cp; 5306 5307 bacpy(&cp.bdaddr, &ev->bdaddr); 5308 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 5309 sizeof(cp), &cp); 5310 goto unlock; 5311 } 5312 5313 if (bredr_sc_enabled(hdev)) { 5314 struct hci_cp_remote_oob_ext_data_reply cp; 5315 5316 bacpy(&cp.bdaddr, &ev->bdaddr); 5317 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 5318 memset(cp.hash192, 0, sizeof(cp.hash192)); 5319 memset(cp.rand192, 0, sizeof(cp.rand192)); 5320 } else { 5321 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 5322 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 5323 } 5324 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 5325 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 5326 5327 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 5328 sizeof(cp), &cp); 5329 } else { 5330 struct hci_cp_remote_oob_data_reply cp; 5331 5332 bacpy(&cp.bdaddr, &ev->bdaddr); 5333 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 5334 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 5335 5336 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 5337 sizeof(cp), &cp); 5338 } 5339 5340 unlock: 5341 hci_dev_unlock(hdev); 5342 } 5343 5344 #if IS_ENABLED(CONFIG_BT_HS) 5345 static void hci_chan_selected_evt(struct hci_dev *hdev, void *data, 5346 struct sk_buff *skb) 5347 { 5348 struct hci_ev_channel_selected *ev = data; 5349 struct hci_conn *hcon; 5350 5351 bt_dev_dbg(hdev, "handle 0x%2.2x", ev->phy_handle); 5352 5353 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5354 if (!hcon) 5355 return; 5356 5357 amp_read_loc_assoc_final_data(hdev, hcon); 5358 } 5359 5360 static void hci_phy_link_complete_evt(struct hci_dev *hdev, void *data, 5361 struct sk_buff *skb) 5362 { 5363 struct hci_ev_phy_link_complete *ev = data; 5364 struct hci_conn *hcon, *bredr_hcon; 5365 5366 bt_dev_dbg(hdev, "handle 0x%2.2x status 0x%2.2x", ev->phy_handle, 5367 ev->status); 5368 5369 hci_dev_lock(hdev); 5370 5371 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5372 if (!hcon) 5373 goto unlock; 5374 5375 if (!hcon->amp_mgr) 5376 goto unlock; 5377 5378 if (ev->status) { 5379 hci_conn_del(hcon); 5380 goto unlock; 5381 } 5382 5383 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon; 5384 5385 hcon->state = BT_CONNECTED; 5386 bacpy(&hcon->dst, &bredr_hcon->dst); 5387 5388 hci_conn_hold(hcon); 5389 hcon->disc_timeout = HCI_DISCONN_TIMEOUT; 5390 hci_conn_drop(hcon); 5391 5392 hci_debugfs_create_conn(hcon); 5393 hci_conn_add_sysfs(hcon); 5394 5395 amp_physical_cfm(bredr_hcon, hcon); 5396 5397 unlock: 5398 hci_dev_unlock(hdev); 5399 } 5400 5401 static void hci_loglink_complete_evt(struct hci_dev *hdev, void *data, 5402 struct sk_buff *skb) 5403 { 5404 struct hci_ev_logical_link_complete *ev = data; 5405 struct hci_conn *hcon; 5406 struct hci_chan *hchan; 5407 struct amp_mgr *mgr; 5408 5409 bt_dev_dbg(hdev, "log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x", 5410 le16_to_cpu(ev->handle), ev->phy_handle, ev->status); 5411 5412 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5413 if (!hcon) 5414 return; 5415 5416 /* Create AMP hchan */ 5417 hchan = hci_chan_create(hcon); 5418 if (!hchan) 5419 return; 5420 5421 hchan->handle = le16_to_cpu(ev->handle); 5422 hchan->amp = true; 5423 5424 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan); 5425 5426 mgr = hcon->amp_mgr; 5427 if (mgr && mgr->bredr_chan) { 5428 struct l2cap_chan *bredr_chan = mgr->bredr_chan; 5429 5430 l2cap_chan_lock(bredr_chan); 5431 5432 bredr_chan->conn->mtu = hdev->block_mtu; 5433 l2cap_logical_cfm(bredr_chan, hchan, 0); 5434 hci_conn_hold(hcon); 5435 5436 l2cap_chan_unlock(bredr_chan); 5437 } 5438 } 5439 5440 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, void *data, 5441 struct sk_buff *skb) 5442 { 5443 struct hci_ev_disconn_logical_link_complete *ev = data; 5444 struct hci_chan *hchan; 5445 5446 bt_dev_dbg(hdev, "handle 0x%4.4x status 0x%2.2x", 5447 le16_to_cpu(ev->handle), ev->status); 5448 5449 if (ev->status) 5450 return; 5451 5452 hci_dev_lock(hdev); 5453 5454 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle)); 5455 if (!hchan || !hchan->amp) 5456 goto unlock; 5457 5458 amp_destroy_logical_link(hchan, ev->reason); 5459 5460 unlock: 5461 hci_dev_unlock(hdev); 5462 } 5463 5464 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, void *data, 5465 struct sk_buff *skb) 5466 { 5467 struct hci_ev_disconn_phy_link_complete *ev = data; 5468 struct hci_conn *hcon; 5469 5470 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5471 5472 if (ev->status) 5473 return; 5474 5475 hci_dev_lock(hdev); 5476 5477 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5478 if (hcon && hcon->type == AMP_LINK) { 5479 hcon->state = BT_CLOSED; 5480 hci_disconn_cfm(hcon, ev->reason); 5481 hci_conn_del(hcon); 5482 } 5483 5484 hci_dev_unlock(hdev); 5485 } 5486 #endif 5487 5488 static void le_conn_update_addr(struct hci_conn *conn, bdaddr_t *bdaddr, 5489 u8 bdaddr_type, bdaddr_t *local_rpa) 5490 { 5491 if (conn->out) { 5492 conn->dst_type = bdaddr_type; 5493 conn->resp_addr_type = bdaddr_type; 5494 bacpy(&conn->resp_addr, bdaddr); 5495 5496 /* Check if the controller has set a Local RPA then it must be 5497 * used instead or hdev->rpa. 5498 */ 5499 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5500 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5501 bacpy(&conn->init_addr, local_rpa); 5502 } else if (hci_dev_test_flag(conn->hdev, HCI_PRIVACY)) { 5503 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5504 bacpy(&conn->init_addr, &conn->hdev->rpa); 5505 } else { 5506 hci_copy_identity_address(conn->hdev, &conn->init_addr, 5507 &conn->init_addr_type); 5508 } 5509 } else { 5510 conn->resp_addr_type = conn->hdev->adv_addr_type; 5511 /* Check if the controller has set a Local RPA then it must be 5512 * used instead or hdev->rpa. 5513 */ 5514 if (local_rpa && bacmp(local_rpa, BDADDR_ANY)) { 5515 conn->resp_addr_type = ADDR_LE_DEV_RANDOM; 5516 bacpy(&conn->resp_addr, local_rpa); 5517 } else if (conn->hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5518 /* In case of ext adv, resp_addr will be updated in 5519 * Adv Terminated event. 5520 */ 5521 if (!ext_adv_capable(conn->hdev)) 5522 bacpy(&conn->resp_addr, 5523 &conn->hdev->random_addr); 5524 } else { 5525 bacpy(&conn->resp_addr, &conn->hdev->bdaddr); 5526 } 5527 5528 conn->init_addr_type = bdaddr_type; 5529 bacpy(&conn->init_addr, bdaddr); 5530 5531 /* For incoming connections, set the default minimum 5532 * and maximum connection interval. They will be used 5533 * to check if the parameters are in range and if not 5534 * trigger the connection update procedure. 5535 */ 5536 conn->le_conn_min_interval = conn->hdev->le_conn_min_interval; 5537 conn->le_conn_max_interval = conn->hdev->le_conn_max_interval; 5538 } 5539 } 5540 5541 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5542 bdaddr_t *bdaddr, u8 bdaddr_type, 5543 bdaddr_t *local_rpa, u8 role, u16 handle, 5544 u16 interval, u16 latency, 5545 u16 supervision_timeout) 5546 { 5547 struct hci_conn_params *params; 5548 struct hci_conn *conn; 5549 struct smp_irk *irk; 5550 u8 addr_type; 5551 5552 hci_dev_lock(hdev); 5553 5554 /* All controllers implicitly stop advertising in the event of a 5555 * connection, so ensure that the state bit is cleared. 5556 */ 5557 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5558 5559 conn = hci_lookup_le_connect(hdev); 5560 if (!conn) { 5561 /* In case of error status and there is no connection pending 5562 * just unlock as there is nothing to cleanup. 5563 */ 5564 if (status) 5565 goto unlock; 5566 5567 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role); 5568 if (!conn) { 5569 bt_dev_err(hdev, "no memory for new connection"); 5570 goto unlock; 5571 } 5572 5573 conn->dst_type = bdaddr_type; 5574 5575 /* If we didn't have a hci_conn object previously 5576 * but we're in central role this must be something 5577 * initiated using an accept list. Since accept list based 5578 * connections are not "first class citizens" we don't 5579 * have full tracking of them. Therefore, we go ahead 5580 * with a "best effort" approach of determining the 5581 * initiator address based on the HCI_PRIVACY flag. 5582 */ 5583 if (conn->out) { 5584 conn->resp_addr_type = bdaddr_type; 5585 bacpy(&conn->resp_addr, bdaddr); 5586 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5587 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5588 bacpy(&conn->init_addr, &hdev->rpa); 5589 } else { 5590 hci_copy_identity_address(hdev, 5591 &conn->init_addr, 5592 &conn->init_addr_type); 5593 } 5594 } 5595 } else { 5596 cancel_delayed_work(&conn->le_conn_timeout); 5597 } 5598 5599 /* The HCI_LE_Connection_Complete event is only sent once per connection. 5600 * Processing it more than once per connection can corrupt kernel memory. 5601 * 5602 * As the connection handle is set here for the first time, it indicates 5603 * whether the connection is already set up. 5604 */ 5605 if (conn->handle != HCI_CONN_HANDLE_UNSET) { 5606 bt_dev_err(hdev, "Ignoring HCI_Connection_Complete for existing connection"); 5607 goto unlock; 5608 } 5609 5610 le_conn_update_addr(conn, bdaddr, bdaddr_type, local_rpa); 5611 5612 /* Lookup the identity address from the stored connection 5613 * address and address type. 5614 * 5615 * When establishing connections to an identity address, the 5616 * connection procedure will store the resolvable random 5617 * address first. Now if it can be converted back into the 5618 * identity address, start using the identity address from 5619 * now on. 5620 */ 5621 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5622 if (irk) { 5623 bacpy(&conn->dst, &irk->bdaddr); 5624 conn->dst_type = irk->addr_type; 5625 } 5626 5627 conn->dst_type = ev_bdaddr_type(hdev, conn->dst_type, NULL); 5628 5629 if (handle > HCI_CONN_HANDLE_MAX) { 5630 bt_dev_err(hdev, "Invalid handle: 0x%4.4x > 0x%4.4x", handle, 5631 HCI_CONN_HANDLE_MAX); 5632 status = HCI_ERROR_INVALID_PARAMETERS; 5633 } 5634 5635 /* All connection failure handling is taken care of by the 5636 * hci_conn_failed function which is triggered by the HCI 5637 * request completion callbacks used for connecting. 5638 */ 5639 if (status) 5640 goto unlock; 5641 5642 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5643 addr_type = BDADDR_LE_PUBLIC; 5644 else 5645 addr_type = BDADDR_LE_RANDOM; 5646 5647 /* Drop the connection if the device is blocked */ 5648 if (hci_bdaddr_list_lookup(&hdev->reject_list, &conn->dst, addr_type)) { 5649 hci_conn_drop(conn); 5650 goto unlock; 5651 } 5652 5653 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 5654 mgmt_device_connected(hdev, conn, NULL, 0); 5655 5656 conn->sec_level = BT_SECURITY_LOW; 5657 conn->handle = handle; 5658 conn->state = BT_CONFIG; 5659 5660 /* Store current advertising instance as connection advertising instance 5661 * when sotfware rotation is in use so it can be re-enabled when 5662 * disconnected. 5663 */ 5664 if (!ext_adv_capable(hdev)) 5665 conn->adv_instance = hdev->cur_adv_instance; 5666 5667 conn->le_conn_interval = interval; 5668 conn->le_conn_latency = latency; 5669 conn->le_supv_timeout = supervision_timeout; 5670 5671 hci_debugfs_create_conn(conn); 5672 hci_conn_add_sysfs(conn); 5673 5674 /* The remote features procedure is defined for central 5675 * role only. So only in case of an initiated connection 5676 * request the remote features. 5677 * 5678 * If the local controller supports peripheral-initiated features 5679 * exchange, then requesting the remote features in peripheral 5680 * role is possible. Otherwise just transition into the 5681 * connected state without requesting the remote features. 5682 */ 5683 if (conn->out || 5684 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) { 5685 struct hci_cp_le_read_remote_features cp; 5686 5687 cp.handle = __cpu_to_le16(conn->handle); 5688 5689 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5690 sizeof(cp), &cp); 5691 5692 hci_conn_hold(conn); 5693 } else { 5694 conn->state = BT_CONNECTED; 5695 hci_connect_cfm(conn, status); 5696 } 5697 5698 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5699 conn->dst_type); 5700 if (params) { 5701 list_del_init(¶ms->action); 5702 if (params->conn) { 5703 hci_conn_drop(params->conn); 5704 hci_conn_put(params->conn); 5705 params->conn = NULL; 5706 } 5707 } 5708 5709 unlock: 5710 hci_update_passive_scan(hdev); 5711 hci_dev_unlock(hdev); 5712 } 5713 5714 static void hci_le_conn_complete_evt(struct hci_dev *hdev, void *data, 5715 struct sk_buff *skb) 5716 { 5717 struct hci_ev_le_conn_complete *ev = data; 5718 5719 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5720 5721 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5722 NULL, ev->role, le16_to_cpu(ev->handle), 5723 le16_to_cpu(ev->interval), 5724 le16_to_cpu(ev->latency), 5725 le16_to_cpu(ev->supervision_timeout)); 5726 } 5727 5728 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, void *data, 5729 struct sk_buff *skb) 5730 { 5731 struct hci_ev_le_enh_conn_complete *ev = data; 5732 5733 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5734 5735 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5736 &ev->local_rpa, ev->role, le16_to_cpu(ev->handle), 5737 le16_to_cpu(ev->interval), 5738 le16_to_cpu(ev->latency), 5739 le16_to_cpu(ev->supervision_timeout)); 5740 } 5741 5742 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, void *data, 5743 struct sk_buff *skb) 5744 { 5745 struct hci_evt_le_ext_adv_set_term *ev = data; 5746 struct hci_conn *conn; 5747 struct adv_info *adv, *n; 5748 5749 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5750 5751 /* The Bluetooth Core 5.3 specification clearly states that this event 5752 * shall not be sent when the Host disables the advertising set. So in 5753 * case of HCI_ERROR_CANCELLED_BY_HOST, just ignore the event. 5754 * 5755 * When the Host disables an advertising set, all cleanup is done via 5756 * its command callback and not needed to be duplicated here. 5757 */ 5758 if (ev->status == HCI_ERROR_CANCELLED_BY_HOST) { 5759 bt_dev_warn_ratelimited(hdev, "Unexpected advertising set terminated event"); 5760 return; 5761 } 5762 5763 hci_dev_lock(hdev); 5764 5765 adv = hci_find_adv_instance(hdev, ev->handle); 5766 5767 if (ev->status) { 5768 if (!adv) 5769 goto unlock; 5770 5771 /* Remove advertising as it has been terminated */ 5772 hci_remove_adv_instance(hdev, ev->handle); 5773 mgmt_advertising_removed(NULL, hdev, ev->handle); 5774 5775 list_for_each_entry_safe(adv, n, &hdev->adv_instances, list) { 5776 if (adv->enabled) 5777 goto unlock; 5778 } 5779 5780 /* We are no longer advertising, clear HCI_LE_ADV */ 5781 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5782 goto unlock; 5783 } 5784 5785 if (adv) 5786 adv->enabled = false; 5787 5788 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 5789 if (conn) { 5790 /* Store handle in the connection so the correct advertising 5791 * instance can be re-enabled when disconnected. 5792 */ 5793 conn->adv_instance = ev->handle; 5794 5795 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM || 5796 bacmp(&conn->resp_addr, BDADDR_ANY)) 5797 goto unlock; 5798 5799 if (!ev->handle) { 5800 bacpy(&conn->resp_addr, &hdev->random_addr); 5801 goto unlock; 5802 } 5803 5804 if (adv) 5805 bacpy(&conn->resp_addr, &adv->random_addr); 5806 } 5807 5808 unlock: 5809 hci_dev_unlock(hdev); 5810 } 5811 5812 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, void *data, 5813 struct sk_buff *skb) 5814 { 5815 struct hci_ev_le_conn_update_complete *ev = data; 5816 struct hci_conn *conn; 5817 5818 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 5819 5820 if (ev->status) 5821 return; 5822 5823 hci_dev_lock(hdev); 5824 5825 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5826 if (conn) { 5827 conn->le_conn_interval = le16_to_cpu(ev->interval); 5828 conn->le_conn_latency = le16_to_cpu(ev->latency); 5829 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 5830 } 5831 5832 hci_dev_unlock(hdev); 5833 } 5834 5835 /* This function requires the caller holds hdev->lock */ 5836 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 5837 bdaddr_t *addr, 5838 u8 addr_type, bool addr_resolved, 5839 u8 adv_type) 5840 { 5841 struct hci_conn *conn; 5842 struct hci_conn_params *params; 5843 5844 /* If the event is not connectable don't proceed further */ 5845 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 5846 return NULL; 5847 5848 /* Ignore if the device is blocked or hdev is suspended */ 5849 if (hci_bdaddr_list_lookup(&hdev->reject_list, addr, addr_type) || 5850 hdev->suspended) 5851 return NULL; 5852 5853 /* Most controller will fail if we try to create new connections 5854 * while we have an existing one in peripheral role. 5855 */ 5856 if (hdev->conn_hash.le_num_peripheral > 0 && 5857 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || 5858 !(hdev->le_states[3] & 0x10))) 5859 return NULL; 5860 5861 /* If we're not connectable only connect devices that we have in 5862 * our pend_le_conns list. 5863 */ 5864 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 5865 addr_type); 5866 if (!params) 5867 return NULL; 5868 5869 if (!params->explicit_connect) { 5870 switch (params->auto_connect) { 5871 case HCI_AUTO_CONN_DIRECT: 5872 /* Only devices advertising with ADV_DIRECT_IND are 5873 * triggering a connection attempt. This is allowing 5874 * incoming connections from peripheral devices. 5875 */ 5876 if (adv_type != LE_ADV_DIRECT_IND) 5877 return NULL; 5878 break; 5879 case HCI_AUTO_CONN_ALWAYS: 5880 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 5881 * are triggering a connection attempt. This means 5882 * that incoming connections from peripheral device are 5883 * accepted and also outgoing connections to peripheral 5884 * devices are established when found. 5885 */ 5886 break; 5887 default: 5888 return NULL; 5889 } 5890 } 5891 5892 conn = hci_connect_le(hdev, addr, addr_type, addr_resolved, 5893 BT_SECURITY_LOW, hdev->def_le_autoconnect_timeout, 5894 HCI_ROLE_MASTER); 5895 if (!IS_ERR(conn)) { 5896 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 5897 * by higher layer that tried to connect, if no then 5898 * store the pointer since we don't really have any 5899 * other owner of the object besides the params that 5900 * triggered it. This way we can abort the connection if 5901 * the parameters get removed and keep the reference 5902 * count consistent once the connection is established. 5903 */ 5904 5905 if (!params->explicit_connect) 5906 params->conn = hci_conn_get(conn); 5907 5908 return conn; 5909 } 5910 5911 switch (PTR_ERR(conn)) { 5912 case -EBUSY: 5913 /* If hci_connect() returns -EBUSY it means there is already 5914 * an LE connection attempt going on. Since controllers don't 5915 * support more than one connection attempt at the time, we 5916 * don't consider this an error case. 5917 */ 5918 break; 5919 default: 5920 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 5921 return NULL; 5922 } 5923 5924 return NULL; 5925 } 5926 5927 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 5928 u8 bdaddr_type, bdaddr_t *direct_addr, 5929 u8 direct_addr_type, s8 rssi, u8 *data, u8 len, 5930 bool ext_adv) 5931 { 5932 struct discovery_state *d = &hdev->discovery; 5933 struct smp_irk *irk; 5934 struct hci_conn *conn; 5935 bool match, bdaddr_resolved; 5936 u32 flags; 5937 u8 *ptr; 5938 5939 switch (type) { 5940 case LE_ADV_IND: 5941 case LE_ADV_DIRECT_IND: 5942 case LE_ADV_SCAN_IND: 5943 case LE_ADV_NONCONN_IND: 5944 case LE_ADV_SCAN_RSP: 5945 break; 5946 default: 5947 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 5948 "type: 0x%02x", type); 5949 return; 5950 } 5951 5952 if (!ext_adv && len > HCI_MAX_AD_LENGTH) { 5953 bt_dev_err_ratelimited(hdev, "legacy adv larger than 31 bytes"); 5954 return; 5955 } 5956 5957 /* Find the end of the data in case the report contains padded zero 5958 * bytes at the end causing an invalid length value. 5959 * 5960 * When data is NULL, len is 0 so there is no need for extra ptr 5961 * check as 'ptr < data + 0' is already false in such case. 5962 */ 5963 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 5964 if (ptr + 1 + *ptr > data + len) 5965 break; 5966 } 5967 5968 /* Adjust for actual length. This handles the case when remote 5969 * device is advertising with incorrect data length. 5970 */ 5971 len = ptr - data; 5972 5973 /* If the direct address is present, then this report is from 5974 * a LE Direct Advertising Report event. In that case it is 5975 * important to see if the address is matching the local 5976 * controller address. 5977 */ 5978 if (direct_addr) { 5979 direct_addr_type = ev_bdaddr_type(hdev, direct_addr_type, 5980 &bdaddr_resolved); 5981 5982 /* Only resolvable random addresses are valid for these 5983 * kind of reports and others can be ignored. 5984 */ 5985 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 5986 return; 5987 5988 /* If the controller is not using resolvable random 5989 * addresses, then this report can be ignored. 5990 */ 5991 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 5992 return; 5993 5994 /* If the local IRK of the controller does not match 5995 * with the resolvable random address provided, then 5996 * this report can be ignored. 5997 */ 5998 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 5999 return; 6000 } 6001 6002 /* Check if we need to convert to identity address */ 6003 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 6004 if (irk) { 6005 bdaddr = &irk->bdaddr; 6006 bdaddr_type = irk->addr_type; 6007 } 6008 6009 bdaddr_type = ev_bdaddr_type(hdev, bdaddr_type, &bdaddr_resolved); 6010 6011 /* Check if we have been requested to connect to this device. 6012 * 6013 * direct_addr is set only for directed advertising reports (it is NULL 6014 * for advertising reports) and is already verified to be RPA above. 6015 */ 6016 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, bdaddr_resolved, 6017 type); 6018 if (!ext_adv && conn && type == LE_ADV_IND && len <= HCI_MAX_AD_LENGTH) { 6019 /* Store report for later inclusion by 6020 * mgmt_device_connected 6021 */ 6022 memcpy(conn->le_adv_data, data, len); 6023 conn->le_adv_data_len = len; 6024 } 6025 6026 /* Passive scanning shouldn't trigger any device found events, 6027 * except for devices marked as CONN_REPORT for which we do send 6028 * device found events, or advertisement monitoring requested. 6029 */ 6030 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 6031 if (type == LE_ADV_DIRECT_IND) 6032 return; 6033 6034 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 6035 bdaddr, bdaddr_type) && 6036 idr_is_empty(&hdev->adv_monitors_idr)) 6037 return; 6038 6039 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 6040 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6041 else 6042 flags = 0; 6043 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6044 rssi, flags, data, len, NULL, 0); 6045 return; 6046 } 6047 6048 /* When receiving non-connectable or scannable undirected 6049 * advertising reports, this means that the remote device is 6050 * not connectable and then clearly indicate this in the 6051 * device found event. 6052 * 6053 * When receiving a scan response, then there is no way to 6054 * know if the remote device is connectable or not. However 6055 * since scan responses are merged with a previously seen 6056 * advertising report, the flags field from that report 6057 * will be used. 6058 * 6059 * In the really unlikely case that a controller get confused 6060 * and just sends a scan response event, then it is marked as 6061 * not connectable as well. 6062 */ 6063 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND || 6064 type == LE_ADV_SCAN_RSP) 6065 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 6066 else 6067 flags = 0; 6068 6069 /* If there's nothing pending either store the data from this 6070 * event or send an immediate device found event if the data 6071 * should not be stored for later. 6072 */ 6073 if (!ext_adv && !has_pending_adv_report(hdev)) { 6074 /* If the report will trigger a SCAN_REQ store it for 6075 * later merging. 6076 */ 6077 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 6078 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6079 rssi, flags, data, len); 6080 return; 6081 } 6082 6083 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6084 rssi, flags, data, len, NULL, 0); 6085 return; 6086 } 6087 6088 /* Check if the pending report is for the same device as the new one */ 6089 match = (!bacmp(bdaddr, &d->last_adv_addr) && 6090 bdaddr_type == d->last_adv_addr_type); 6091 6092 /* If the pending data doesn't match this report or this isn't a 6093 * scan response (e.g. we got a duplicate ADV_IND) then force 6094 * sending of the pending data. 6095 */ 6096 if (type != LE_ADV_SCAN_RSP || !match) { 6097 /* Send out whatever is in the cache, but skip duplicates */ 6098 if (!match) 6099 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6100 d->last_adv_addr_type, NULL, 6101 d->last_adv_rssi, d->last_adv_flags, 6102 d->last_adv_data, 6103 d->last_adv_data_len, NULL, 0); 6104 6105 /* If the new report will trigger a SCAN_REQ store it for 6106 * later merging. 6107 */ 6108 if (!ext_adv && (type == LE_ADV_IND || 6109 type == LE_ADV_SCAN_IND)) { 6110 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 6111 rssi, flags, data, len); 6112 return; 6113 } 6114 6115 /* The advertising reports cannot be merged, so clear 6116 * the pending report and send out a device found event. 6117 */ 6118 clear_pending_adv_report(hdev); 6119 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 6120 rssi, flags, data, len, NULL, 0); 6121 return; 6122 } 6123 6124 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 6125 * the new event is a SCAN_RSP. We can therefore proceed with 6126 * sending a merged device found event. 6127 */ 6128 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 6129 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 6130 d->last_adv_data, d->last_adv_data_len, data, len); 6131 clear_pending_adv_report(hdev); 6132 } 6133 6134 static void hci_le_adv_report_evt(struct hci_dev *hdev, void *data, 6135 struct sk_buff *skb) 6136 { 6137 struct hci_ev_le_advertising_report *ev = data; 6138 6139 if (!ev->num) 6140 return; 6141 6142 hci_dev_lock(hdev); 6143 6144 while (ev->num--) { 6145 struct hci_ev_le_advertising_info *info; 6146 s8 rssi; 6147 6148 info = hci_le_ev_skb_pull(hdev, skb, 6149 HCI_EV_LE_ADVERTISING_REPORT, 6150 sizeof(*info)); 6151 if (!info) 6152 break; 6153 6154 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_ADVERTISING_REPORT, 6155 info->length + 1)) 6156 break; 6157 6158 if (info->length <= HCI_MAX_AD_LENGTH) { 6159 rssi = info->data[info->length]; 6160 process_adv_report(hdev, info->type, &info->bdaddr, 6161 info->bdaddr_type, NULL, 0, rssi, 6162 info->data, info->length, false); 6163 } else { 6164 bt_dev_err(hdev, "Dropping invalid advertising data"); 6165 } 6166 } 6167 6168 hci_dev_unlock(hdev); 6169 } 6170 6171 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 6172 { 6173 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 6174 switch (evt_type) { 6175 case LE_LEGACY_ADV_IND: 6176 return LE_ADV_IND; 6177 case LE_LEGACY_ADV_DIRECT_IND: 6178 return LE_ADV_DIRECT_IND; 6179 case LE_LEGACY_ADV_SCAN_IND: 6180 return LE_ADV_SCAN_IND; 6181 case LE_LEGACY_NONCONN_IND: 6182 return LE_ADV_NONCONN_IND; 6183 case LE_LEGACY_SCAN_RSP_ADV: 6184 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 6185 return LE_ADV_SCAN_RSP; 6186 } 6187 6188 goto invalid; 6189 } 6190 6191 if (evt_type & LE_EXT_ADV_CONN_IND) { 6192 if (evt_type & LE_EXT_ADV_DIRECT_IND) 6193 return LE_ADV_DIRECT_IND; 6194 6195 return LE_ADV_IND; 6196 } 6197 6198 if (evt_type & LE_EXT_ADV_SCAN_RSP) 6199 return LE_ADV_SCAN_RSP; 6200 6201 if (evt_type & LE_EXT_ADV_SCAN_IND) 6202 return LE_ADV_SCAN_IND; 6203 6204 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 6205 evt_type & LE_EXT_ADV_DIRECT_IND) 6206 return LE_ADV_NONCONN_IND; 6207 6208 invalid: 6209 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 6210 evt_type); 6211 6212 return LE_ADV_INVALID; 6213 } 6214 6215 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, void *data, 6216 struct sk_buff *skb) 6217 { 6218 struct hci_ev_le_ext_adv_report *ev = data; 6219 6220 if (!ev->num) 6221 return; 6222 6223 hci_dev_lock(hdev); 6224 6225 while (ev->num--) { 6226 struct hci_ev_le_ext_adv_info *info; 6227 u8 legacy_evt_type; 6228 u16 evt_type; 6229 6230 info = hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6231 sizeof(*info)); 6232 if (!info) 6233 break; 6234 6235 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_EXT_ADV_REPORT, 6236 info->length)) 6237 break; 6238 6239 evt_type = __le16_to_cpu(info->type); 6240 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 6241 if (legacy_evt_type != LE_ADV_INVALID) { 6242 process_adv_report(hdev, legacy_evt_type, &info->bdaddr, 6243 info->bdaddr_type, NULL, 0, 6244 info->rssi, info->data, info->length, 6245 !(evt_type & LE_EXT_ADV_LEGACY_PDU)); 6246 } 6247 } 6248 6249 hci_dev_unlock(hdev); 6250 } 6251 6252 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, void *data, 6253 struct sk_buff *skb) 6254 { 6255 struct hci_ev_le_remote_feat_complete *ev = data; 6256 struct hci_conn *conn; 6257 6258 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6259 6260 hci_dev_lock(hdev); 6261 6262 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6263 if (conn) { 6264 if (!ev->status) 6265 memcpy(conn->features[0], ev->features, 8); 6266 6267 if (conn->state == BT_CONFIG) { 6268 __u8 status; 6269 6270 /* If the local controller supports peripheral-initiated 6271 * features exchange, but the remote controller does 6272 * not, then it is possible that the error code 0x1a 6273 * for unsupported remote feature gets returned. 6274 * 6275 * In this specific case, allow the connection to 6276 * transition into connected state and mark it as 6277 * successful. 6278 */ 6279 if (!conn->out && ev->status == 0x1a && 6280 (hdev->le_features[0] & HCI_LE_PERIPHERAL_FEATURES)) 6281 status = 0x00; 6282 else 6283 status = ev->status; 6284 6285 conn->state = BT_CONNECTED; 6286 hci_connect_cfm(conn, status); 6287 hci_conn_drop(conn); 6288 } 6289 } 6290 6291 hci_dev_unlock(hdev); 6292 } 6293 6294 static void hci_le_ltk_request_evt(struct hci_dev *hdev, void *data, 6295 struct sk_buff *skb) 6296 { 6297 struct hci_ev_le_ltk_req *ev = data; 6298 struct hci_cp_le_ltk_reply cp; 6299 struct hci_cp_le_ltk_neg_reply neg; 6300 struct hci_conn *conn; 6301 struct smp_ltk *ltk; 6302 6303 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6304 6305 hci_dev_lock(hdev); 6306 6307 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6308 if (conn == NULL) 6309 goto not_found; 6310 6311 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 6312 if (!ltk) 6313 goto not_found; 6314 6315 if (smp_ltk_is_sc(ltk)) { 6316 /* With SC both EDiv and Rand are set to zero */ 6317 if (ev->ediv || ev->rand) 6318 goto not_found; 6319 } else { 6320 /* For non-SC keys check that EDiv and Rand match */ 6321 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 6322 goto not_found; 6323 } 6324 6325 memcpy(cp.ltk, ltk->val, ltk->enc_size); 6326 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 6327 cp.handle = cpu_to_le16(conn->handle); 6328 6329 conn->pending_sec_level = smp_ltk_sec_level(ltk); 6330 6331 conn->enc_key_size = ltk->enc_size; 6332 6333 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 6334 6335 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 6336 * temporary key used to encrypt a connection following 6337 * pairing. It is used during the Encrypted Session Setup to 6338 * distribute the keys. Later, security can be re-established 6339 * using a distributed LTK. 6340 */ 6341 if (ltk->type == SMP_STK) { 6342 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6343 list_del_rcu(<k->list); 6344 kfree_rcu(ltk, rcu); 6345 } else { 6346 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 6347 } 6348 6349 hci_dev_unlock(hdev); 6350 6351 return; 6352 6353 not_found: 6354 neg.handle = ev->handle; 6355 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 6356 hci_dev_unlock(hdev); 6357 } 6358 6359 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 6360 u8 reason) 6361 { 6362 struct hci_cp_le_conn_param_req_neg_reply cp; 6363 6364 cp.handle = cpu_to_le16(handle); 6365 cp.reason = reason; 6366 6367 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 6368 &cp); 6369 } 6370 6371 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, void *data, 6372 struct sk_buff *skb) 6373 { 6374 struct hci_ev_le_remote_conn_param_req *ev = data; 6375 struct hci_cp_le_conn_param_req_reply cp; 6376 struct hci_conn *hcon; 6377 u16 handle, min, max, latency, timeout; 6378 6379 bt_dev_dbg(hdev, "handle 0x%4.4x", __le16_to_cpu(ev->handle)); 6380 6381 handle = le16_to_cpu(ev->handle); 6382 min = le16_to_cpu(ev->interval_min); 6383 max = le16_to_cpu(ev->interval_max); 6384 latency = le16_to_cpu(ev->latency); 6385 timeout = le16_to_cpu(ev->timeout); 6386 6387 hcon = hci_conn_hash_lookup_handle(hdev, handle); 6388 if (!hcon || hcon->state != BT_CONNECTED) 6389 return send_conn_param_neg_reply(hdev, handle, 6390 HCI_ERROR_UNKNOWN_CONN_ID); 6391 6392 if (hci_check_conn_params(min, max, latency, timeout)) 6393 return send_conn_param_neg_reply(hdev, handle, 6394 HCI_ERROR_INVALID_LL_PARAMS); 6395 6396 if (hcon->role == HCI_ROLE_MASTER) { 6397 struct hci_conn_params *params; 6398 u8 store_hint; 6399 6400 hci_dev_lock(hdev); 6401 6402 params = hci_conn_params_lookup(hdev, &hcon->dst, 6403 hcon->dst_type); 6404 if (params) { 6405 params->conn_min_interval = min; 6406 params->conn_max_interval = max; 6407 params->conn_latency = latency; 6408 params->supervision_timeout = timeout; 6409 store_hint = 0x01; 6410 } else { 6411 store_hint = 0x00; 6412 } 6413 6414 hci_dev_unlock(hdev); 6415 6416 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 6417 store_hint, min, max, latency, timeout); 6418 } 6419 6420 cp.handle = ev->handle; 6421 cp.interval_min = ev->interval_min; 6422 cp.interval_max = ev->interval_max; 6423 cp.latency = ev->latency; 6424 cp.timeout = ev->timeout; 6425 cp.min_ce_len = 0; 6426 cp.max_ce_len = 0; 6427 6428 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 6429 } 6430 6431 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, void *data, 6432 struct sk_buff *skb) 6433 { 6434 struct hci_ev_le_direct_adv_report *ev = data; 6435 int i; 6436 6437 if (!hci_le_ev_skb_pull(hdev, skb, HCI_EV_LE_DIRECT_ADV_REPORT, 6438 flex_array_size(ev, info, ev->num))) 6439 return; 6440 6441 if (!ev->num) 6442 return; 6443 6444 hci_dev_lock(hdev); 6445 6446 for (i = 0; i < ev->num; i++) { 6447 struct hci_ev_le_direct_adv_info *info = &ev->info[i]; 6448 6449 process_adv_report(hdev, info->type, &info->bdaddr, 6450 info->bdaddr_type, &info->direct_addr, 6451 info->direct_addr_type, info->rssi, NULL, 0, 6452 false); 6453 } 6454 6455 hci_dev_unlock(hdev); 6456 } 6457 6458 static void hci_le_phy_update_evt(struct hci_dev *hdev, void *data, 6459 struct sk_buff *skb) 6460 { 6461 struct hci_ev_le_phy_update_complete *ev = data; 6462 struct hci_conn *conn; 6463 6464 bt_dev_dbg(hdev, "status 0x%2.2x", ev->status); 6465 6466 if (ev->status) 6467 return; 6468 6469 hci_dev_lock(hdev); 6470 6471 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 6472 if (!conn) 6473 goto unlock; 6474 6475 conn->le_tx_phy = ev->tx_phy; 6476 conn->le_rx_phy = ev->rx_phy; 6477 6478 unlock: 6479 hci_dev_unlock(hdev); 6480 } 6481 6482 #define HCI_LE_EV_VL(_op, _func, _min_len, _max_len) \ 6483 [_op] = { \ 6484 .func = _func, \ 6485 .min_len = _min_len, \ 6486 .max_len = _max_len, \ 6487 } 6488 6489 #define HCI_LE_EV(_op, _func, _len) \ 6490 HCI_LE_EV_VL(_op, _func, _len, _len) 6491 6492 #define HCI_LE_EV_STATUS(_op, _func) \ 6493 HCI_LE_EV(_op, _func, sizeof(struct hci_ev_status)) 6494 6495 /* Entries in this table shall have their position according to the subevent 6496 * opcode they handle so the use of the macros above is recommend since it does 6497 * attempt to initialize at its proper index using Designated Initializers that 6498 * way events without a callback function can be ommited. 6499 */ 6500 static const struct hci_le_ev { 6501 void (*func)(struct hci_dev *hdev, void *data, struct sk_buff *skb); 6502 u16 min_len; 6503 u16 max_len; 6504 } hci_le_ev_table[U8_MAX + 1] = { 6505 /* [0x01 = HCI_EV_LE_CONN_COMPLETE] */ 6506 HCI_LE_EV(HCI_EV_LE_CONN_COMPLETE, hci_le_conn_complete_evt, 6507 sizeof(struct hci_ev_le_conn_complete)), 6508 /* [0x02 = HCI_EV_LE_ADVERTISING_REPORT] */ 6509 HCI_LE_EV_VL(HCI_EV_LE_ADVERTISING_REPORT, hci_le_adv_report_evt, 6510 sizeof(struct hci_ev_le_advertising_report), 6511 HCI_MAX_EVENT_SIZE), 6512 /* [0x03 = HCI_EV_LE_CONN_UPDATE_COMPLETE] */ 6513 HCI_LE_EV(HCI_EV_LE_CONN_UPDATE_COMPLETE, 6514 hci_le_conn_update_complete_evt, 6515 sizeof(struct hci_ev_le_conn_update_complete)), 6516 /* [0x04 = HCI_EV_LE_REMOTE_FEAT_COMPLETE] */ 6517 HCI_LE_EV(HCI_EV_LE_REMOTE_FEAT_COMPLETE, 6518 hci_le_remote_feat_complete_evt, 6519 sizeof(struct hci_ev_le_remote_feat_complete)), 6520 /* [0x05 = HCI_EV_LE_LTK_REQ] */ 6521 HCI_LE_EV(HCI_EV_LE_LTK_REQ, hci_le_ltk_request_evt, 6522 sizeof(struct hci_ev_le_ltk_req)), 6523 /* [0x06 = HCI_EV_LE_REMOTE_CONN_PARAM_REQ] */ 6524 HCI_LE_EV(HCI_EV_LE_REMOTE_CONN_PARAM_REQ, 6525 hci_le_remote_conn_param_req_evt, 6526 sizeof(struct hci_ev_le_remote_conn_param_req)), 6527 /* [0x0a = HCI_EV_LE_ENHANCED_CONN_COMPLETE] */ 6528 HCI_LE_EV(HCI_EV_LE_ENHANCED_CONN_COMPLETE, 6529 hci_le_enh_conn_complete_evt, 6530 sizeof(struct hci_ev_le_enh_conn_complete)), 6531 /* [0x0b = HCI_EV_LE_DIRECT_ADV_REPORT] */ 6532 HCI_LE_EV_VL(HCI_EV_LE_DIRECT_ADV_REPORT, hci_le_direct_adv_report_evt, 6533 sizeof(struct hci_ev_le_direct_adv_report), 6534 HCI_MAX_EVENT_SIZE), 6535 /* [0x0c = HCI_EV_LE_PHY_UPDATE_COMPLETE] */ 6536 HCI_LE_EV(HCI_EV_LE_PHY_UPDATE_COMPLETE, hci_le_phy_update_evt, 6537 sizeof(struct hci_ev_le_phy_update_complete)), 6538 /* [0x0d = HCI_EV_LE_EXT_ADV_REPORT] */ 6539 HCI_LE_EV_VL(HCI_EV_LE_EXT_ADV_REPORT, hci_le_ext_adv_report_evt, 6540 sizeof(struct hci_ev_le_ext_adv_report), 6541 HCI_MAX_EVENT_SIZE), 6542 /* [0x12 = HCI_EV_LE_EXT_ADV_SET_TERM] */ 6543 HCI_LE_EV(HCI_EV_LE_EXT_ADV_SET_TERM, hci_le_ext_adv_term_evt, 6544 sizeof(struct hci_evt_le_ext_adv_set_term)), 6545 }; 6546 6547 static void hci_le_meta_evt(struct hci_dev *hdev, void *data, 6548 struct sk_buff *skb, u16 *opcode, u8 *status, 6549 hci_req_complete_t *req_complete, 6550 hci_req_complete_skb_t *req_complete_skb) 6551 { 6552 struct hci_ev_le_meta *ev = data; 6553 const struct hci_le_ev *subev; 6554 6555 bt_dev_dbg(hdev, "subevent 0x%2.2x", ev->subevent); 6556 6557 /* Only match event if command OGF is for LE */ 6558 if (hdev->sent_cmd && 6559 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) == 0x08 && 6560 hci_skb_event(hdev->sent_cmd) == ev->subevent) { 6561 *opcode = hci_skb_opcode(hdev->sent_cmd); 6562 hci_req_cmd_complete(hdev, *opcode, 0x00, req_complete, 6563 req_complete_skb); 6564 } 6565 6566 subev = &hci_le_ev_table[ev->subevent]; 6567 if (!subev->func) 6568 return; 6569 6570 if (skb->len < subev->min_len) { 6571 bt_dev_err(hdev, "unexpected subevent 0x%2.2x length: %u < %u", 6572 ev->subevent, skb->len, subev->min_len); 6573 return; 6574 } 6575 6576 /* Just warn if the length is over max_len size it still be 6577 * possible to partially parse the event so leave to callback to 6578 * decide if that is acceptable. 6579 */ 6580 if (skb->len > subev->max_len) 6581 bt_dev_warn(hdev, "unexpected subevent 0x%2.2x length: %u > %u", 6582 ev->subevent, skb->len, subev->max_len); 6583 6584 data = hci_le_ev_skb_pull(hdev, skb, ev->subevent, subev->min_len); 6585 if (!data) 6586 return; 6587 6588 subev->func(hdev, data, skb); 6589 } 6590 6591 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 6592 u8 event, struct sk_buff *skb) 6593 { 6594 struct hci_ev_cmd_complete *ev; 6595 struct hci_event_hdr *hdr; 6596 6597 if (!skb) 6598 return false; 6599 6600 hdr = hci_ev_skb_pull(hdev, skb, event, sizeof(*hdr)); 6601 if (!hdr) 6602 return false; 6603 6604 if (event) { 6605 if (hdr->evt != event) 6606 return false; 6607 return true; 6608 } 6609 6610 /* Check if request ended in Command Status - no way to retrieve 6611 * any extra parameters in this case. 6612 */ 6613 if (hdr->evt == HCI_EV_CMD_STATUS) 6614 return false; 6615 6616 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 6617 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 6618 hdr->evt); 6619 return false; 6620 } 6621 6622 ev = hci_cc_skb_pull(hdev, skb, opcode, sizeof(*ev)); 6623 if (!ev) 6624 return false; 6625 6626 if (opcode != __le16_to_cpu(ev->opcode)) { 6627 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 6628 __le16_to_cpu(ev->opcode)); 6629 return false; 6630 } 6631 6632 return true; 6633 } 6634 6635 static void hci_store_wake_reason(struct hci_dev *hdev, u8 event, 6636 struct sk_buff *skb) 6637 { 6638 struct hci_ev_le_advertising_info *adv; 6639 struct hci_ev_le_direct_adv_info *direct_adv; 6640 struct hci_ev_le_ext_adv_info *ext_adv; 6641 const struct hci_ev_conn_complete *conn_complete = (void *)skb->data; 6642 const struct hci_ev_conn_request *conn_request = (void *)skb->data; 6643 6644 hci_dev_lock(hdev); 6645 6646 /* If we are currently suspended and this is the first BT event seen, 6647 * save the wake reason associated with the event. 6648 */ 6649 if (!hdev->suspended || hdev->wake_reason) 6650 goto unlock; 6651 6652 /* Default to remote wake. Values for wake_reason are documented in the 6653 * Bluez mgmt api docs. 6654 */ 6655 hdev->wake_reason = MGMT_WAKE_REASON_REMOTE_WAKE; 6656 6657 /* Once configured for remote wakeup, we should only wake up for 6658 * reconnections. It's useful to see which device is waking us up so 6659 * keep track of the bdaddr of the connection event that woke us up. 6660 */ 6661 if (event == HCI_EV_CONN_REQUEST) { 6662 bacpy(&hdev->wake_addr, &conn_complete->bdaddr); 6663 hdev->wake_addr_type = BDADDR_BREDR; 6664 } else if (event == HCI_EV_CONN_COMPLETE) { 6665 bacpy(&hdev->wake_addr, &conn_request->bdaddr); 6666 hdev->wake_addr_type = BDADDR_BREDR; 6667 } else if (event == HCI_EV_LE_META) { 6668 struct hci_ev_le_meta *le_ev = (void *)skb->data; 6669 u8 subevent = le_ev->subevent; 6670 u8 *ptr = &skb->data[sizeof(*le_ev)]; 6671 u8 num_reports = *ptr; 6672 6673 if ((subevent == HCI_EV_LE_ADVERTISING_REPORT || 6674 subevent == HCI_EV_LE_DIRECT_ADV_REPORT || 6675 subevent == HCI_EV_LE_EXT_ADV_REPORT) && 6676 num_reports) { 6677 adv = (void *)(ptr + 1); 6678 direct_adv = (void *)(ptr + 1); 6679 ext_adv = (void *)(ptr + 1); 6680 6681 switch (subevent) { 6682 case HCI_EV_LE_ADVERTISING_REPORT: 6683 bacpy(&hdev->wake_addr, &adv->bdaddr); 6684 hdev->wake_addr_type = adv->bdaddr_type; 6685 break; 6686 case HCI_EV_LE_DIRECT_ADV_REPORT: 6687 bacpy(&hdev->wake_addr, &direct_adv->bdaddr); 6688 hdev->wake_addr_type = direct_adv->bdaddr_type; 6689 break; 6690 case HCI_EV_LE_EXT_ADV_REPORT: 6691 bacpy(&hdev->wake_addr, &ext_adv->bdaddr); 6692 hdev->wake_addr_type = ext_adv->bdaddr_type; 6693 break; 6694 } 6695 } 6696 } else { 6697 hdev->wake_reason = MGMT_WAKE_REASON_UNEXPECTED; 6698 } 6699 6700 unlock: 6701 hci_dev_unlock(hdev); 6702 } 6703 6704 #define HCI_EV_VL(_op, _func, _min_len, _max_len) \ 6705 [_op] = { \ 6706 .req = false, \ 6707 .func = _func, \ 6708 .min_len = _min_len, \ 6709 .max_len = _max_len, \ 6710 } 6711 6712 #define HCI_EV(_op, _func, _len) \ 6713 HCI_EV_VL(_op, _func, _len, _len) 6714 6715 #define HCI_EV_STATUS(_op, _func) \ 6716 HCI_EV(_op, _func, sizeof(struct hci_ev_status)) 6717 6718 #define HCI_EV_REQ_VL(_op, _func, _min_len, _max_len) \ 6719 [_op] = { \ 6720 .req = true, \ 6721 .func_req = _func, \ 6722 .min_len = _min_len, \ 6723 .max_len = _max_len, \ 6724 } 6725 6726 #define HCI_EV_REQ(_op, _func, _len) \ 6727 HCI_EV_REQ_VL(_op, _func, _len, _len) 6728 6729 /* Entries in this table shall have their position according to the event opcode 6730 * they handle so the use of the macros above is recommend since it does attempt 6731 * to initialize at its proper index using Designated Initializers that way 6732 * events without a callback function don't have entered. 6733 */ 6734 static const struct hci_ev { 6735 bool req; 6736 union { 6737 void (*func)(struct hci_dev *hdev, void *data, 6738 struct sk_buff *skb); 6739 void (*func_req)(struct hci_dev *hdev, void *data, 6740 struct sk_buff *skb, u16 *opcode, u8 *status, 6741 hci_req_complete_t *req_complete, 6742 hci_req_complete_skb_t *req_complete_skb); 6743 }; 6744 u16 min_len; 6745 u16 max_len; 6746 } hci_ev_table[U8_MAX + 1] = { 6747 /* [0x01 = HCI_EV_INQUIRY_COMPLETE] */ 6748 HCI_EV_STATUS(HCI_EV_INQUIRY_COMPLETE, hci_inquiry_complete_evt), 6749 /* [0x02 = HCI_EV_INQUIRY_RESULT] */ 6750 HCI_EV_VL(HCI_EV_INQUIRY_RESULT, hci_inquiry_result_evt, 6751 sizeof(struct hci_ev_inquiry_result), HCI_MAX_EVENT_SIZE), 6752 /* [0x03 = HCI_EV_CONN_COMPLETE] */ 6753 HCI_EV(HCI_EV_CONN_COMPLETE, hci_conn_complete_evt, 6754 sizeof(struct hci_ev_conn_complete)), 6755 /* [0x04 = HCI_EV_CONN_REQUEST] */ 6756 HCI_EV(HCI_EV_CONN_REQUEST, hci_conn_request_evt, 6757 sizeof(struct hci_ev_conn_request)), 6758 /* [0x05 = HCI_EV_DISCONN_COMPLETE] */ 6759 HCI_EV(HCI_EV_DISCONN_COMPLETE, hci_disconn_complete_evt, 6760 sizeof(struct hci_ev_disconn_complete)), 6761 /* [0x06 = HCI_EV_AUTH_COMPLETE] */ 6762 HCI_EV(HCI_EV_AUTH_COMPLETE, hci_auth_complete_evt, 6763 sizeof(struct hci_ev_auth_complete)), 6764 /* [0x07 = HCI_EV_REMOTE_NAME] */ 6765 HCI_EV(HCI_EV_REMOTE_NAME, hci_remote_name_evt, 6766 sizeof(struct hci_ev_remote_name)), 6767 /* [0x08 = HCI_EV_ENCRYPT_CHANGE] */ 6768 HCI_EV(HCI_EV_ENCRYPT_CHANGE, hci_encrypt_change_evt, 6769 sizeof(struct hci_ev_encrypt_change)), 6770 /* [0x09 = HCI_EV_CHANGE_LINK_KEY_COMPLETE] */ 6771 HCI_EV(HCI_EV_CHANGE_LINK_KEY_COMPLETE, 6772 hci_change_link_key_complete_evt, 6773 sizeof(struct hci_ev_change_link_key_complete)), 6774 /* [0x0b = HCI_EV_REMOTE_FEATURES] */ 6775 HCI_EV(HCI_EV_REMOTE_FEATURES, hci_remote_features_evt, 6776 sizeof(struct hci_ev_remote_features)), 6777 /* [0x0e = HCI_EV_CMD_COMPLETE] */ 6778 HCI_EV_REQ_VL(HCI_EV_CMD_COMPLETE, hci_cmd_complete_evt, 6779 sizeof(struct hci_ev_cmd_complete), HCI_MAX_EVENT_SIZE), 6780 /* [0x0f = HCI_EV_CMD_STATUS] */ 6781 HCI_EV_REQ(HCI_EV_CMD_STATUS, hci_cmd_status_evt, 6782 sizeof(struct hci_ev_cmd_status)), 6783 /* [0x10 = HCI_EV_CMD_STATUS] */ 6784 HCI_EV(HCI_EV_HARDWARE_ERROR, hci_hardware_error_evt, 6785 sizeof(struct hci_ev_hardware_error)), 6786 /* [0x12 = HCI_EV_ROLE_CHANGE] */ 6787 HCI_EV(HCI_EV_ROLE_CHANGE, hci_role_change_evt, 6788 sizeof(struct hci_ev_role_change)), 6789 /* [0x13 = HCI_EV_NUM_COMP_PKTS] */ 6790 HCI_EV_VL(HCI_EV_NUM_COMP_PKTS, hci_num_comp_pkts_evt, 6791 sizeof(struct hci_ev_num_comp_pkts), HCI_MAX_EVENT_SIZE), 6792 /* [0x14 = HCI_EV_MODE_CHANGE] */ 6793 HCI_EV(HCI_EV_MODE_CHANGE, hci_mode_change_evt, 6794 sizeof(struct hci_ev_mode_change)), 6795 /* [0x16 = HCI_EV_PIN_CODE_REQ] */ 6796 HCI_EV(HCI_EV_PIN_CODE_REQ, hci_pin_code_request_evt, 6797 sizeof(struct hci_ev_pin_code_req)), 6798 /* [0x17 = HCI_EV_LINK_KEY_REQ] */ 6799 HCI_EV(HCI_EV_LINK_KEY_REQ, hci_link_key_request_evt, 6800 sizeof(struct hci_ev_link_key_req)), 6801 /* [0x18 = HCI_EV_LINK_KEY_NOTIFY] */ 6802 HCI_EV(HCI_EV_LINK_KEY_NOTIFY, hci_link_key_notify_evt, 6803 sizeof(struct hci_ev_link_key_notify)), 6804 /* [0x1c = HCI_EV_CLOCK_OFFSET] */ 6805 HCI_EV(HCI_EV_CLOCK_OFFSET, hci_clock_offset_evt, 6806 sizeof(struct hci_ev_clock_offset)), 6807 /* [0x1d = HCI_EV_PKT_TYPE_CHANGE] */ 6808 HCI_EV(HCI_EV_PKT_TYPE_CHANGE, hci_pkt_type_change_evt, 6809 sizeof(struct hci_ev_pkt_type_change)), 6810 /* [0x20 = HCI_EV_PSCAN_REP_MODE] */ 6811 HCI_EV(HCI_EV_PSCAN_REP_MODE, hci_pscan_rep_mode_evt, 6812 sizeof(struct hci_ev_pscan_rep_mode)), 6813 /* [0x22 = HCI_EV_INQUIRY_RESULT_WITH_RSSI] */ 6814 HCI_EV_VL(HCI_EV_INQUIRY_RESULT_WITH_RSSI, 6815 hci_inquiry_result_with_rssi_evt, 6816 sizeof(struct hci_ev_inquiry_result_rssi), 6817 HCI_MAX_EVENT_SIZE), 6818 /* [0x23 = HCI_EV_REMOTE_EXT_FEATURES] */ 6819 HCI_EV(HCI_EV_REMOTE_EXT_FEATURES, hci_remote_ext_features_evt, 6820 sizeof(struct hci_ev_remote_ext_features)), 6821 /* [0x2c = HCI_EV_SYNC_CONN_COMPLETE] */ 6822 HCI_EV(HCI_EV_SYNC_CONN_COMPLETE, hci_sync_conn_complete_evt, 6823 sizeof(struct hci_ev_sync_conn_complete)), 6824 /* [0x2d = HCI_EV_EXTENDED_INQUIRY_RESULT] */ 6825 HCI_EV_VL(HCI_EV_EXTENDED_INQUIRY_RESULT, 6826 hci_extended_inquiry_result_evt, 6827 sizeof(struct hci_ev_ext_inquiry_result), HCI_MAX_EVENT_SIZE), 6828 /* [0x30 = HCI_EV_KEY_REFRESH_COMPLETE] */ 6829 HCI_EV(HCI_EV_KEY_REFRESH_COMPLETE, hci_key_refresh_complete_evt, 6830 sizeof(struct hci_ev_key_refresh_complete)), 6831 /* [0x31 = HCI_EV_IO_CAPA_REQUEST] */ 6832 HCI_EV(HCI_EV_IO_CAPA_REQUEST, hci_io_capa_request_evt, 6833 sizeof(struct hci_ev_io_capa_request)), 6834 /* [0x32 = HCI_EV_IO_CAPA_REPLY] */ 6835 HCI_EV(HCI_EV_IO_CAPA_REPLY, hci_io_capa_reply_evt, 6836 sizeof(struct hci_ev_io_capa_reply)), 6837 /* [0x33 = HCI_EV_USER_CONFIRM_REQUEST] */ 6838 HCI_EV(HCI_EV_USER_CONFIRM_REQUEST, hci_user_confirm_request_evt, 6839 sizeof(struct hci_ev_user_confirm_req)), 6840 /* [0x34 = HCI_EV_USER_PASSKEY_REQUEST] */ 6841 HCI_EV(HCI_EV_USER_PASSKEY_REQUEST, hci_user_passkey_request_evt, 6842 sizeof(struct hci_ev_user_passkey_req)), 6843 /* [0x35 = HCI_EV_REMOTE_OOB_DATA_REQUEST] */ 6844 HCI_EV(HCI_EV_REMOTE_OOB_DATA_REQUEST, hci_remote_oob_data_request_evt, 6845 sizeof(struct hci_ev_remote_oob_data_request)), 6846 /* [0x36 = HCI_EV_SIMPLE_PAIR_COMPLETE] */ 6847 HCI_EV(HCI_EV_SIMPLE_PAIR_COMPLETE, hci_simple_pair_complete_evt, 6848 sizeof(struct hci_ev_simple_pair_complete)), 6849 /* [0x3b = HCI_EV_USER_PASSKEY_NOTIFY] */ 6850 HCI_EV(HCI_EV_USER_PASSKEY_NOTIFY, hci_user_passkey_notify_evt, 6851 sizeof(struct hci_ev_user_passkey_notify)), 6852 /* [0x3c = HCI_EV_KEYPRESS_NOTIFY] */ 6853 HCI_EV(HCI_EV_KEYPRESS_NOTIFY, hci_keypress_notify_evt, 6854 sizeof(struct hci_ev_keypress_notify)), 6855 /* [0x3d = HCI_EV_REMOTE_HOST_FEATURES] */ 6856 HCI_EV(HCI_EV_REMOTE_HOST_FEATURES, hci_remote_host_features_evt, 6857 sizeof(struct hci_ev_remote_host_features)), 6858 /* [0x3e = HCI_EV_LE_META] */ 6859 HCI_EV_REQ_VL(HCI_EV_LE_META, hci_le_meta_evt, 6860 sizeof(struct hci_ev_le_meta), HCI_MAX_EVENT_SIZE), 6861 #if IS_ENABLED(CONFIG_BT_HS) 6862 /* [0x40 = HCI_EV_PHY_LINK_COMPLETE] */ 6863 HCI_EV(HCI_EV_PHY_LINK_COMPLETE, hci_phy_link_complete_evt, 6864 sizeof(struct hci_ev_phy_link_complete)), 6865 /* [0x41 = HCI_EV_CHANNEL_SELECTED] */ 6866 HCI_EV(HCI_EV_CHANNEL_SELECTED, hci_chan_selected_evt, 6867 sizeof(struct hci_ev_channel_selected)), 6868 /* [0x42 = HCI_EV_DISCONN_PHY_LINK_COMPLETE] */ 6869 HCI_EV(HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE, 6870 hci_disconn_loglink_complete_evt, 6871 sizeof(struct hci_ev_disconn_logical_link_complete)), 6872 /* [0x45 = HCI_EV_LOGICAL_LINK_COMPLETE] */ 6873 HCI_EV(HCI_EV_LOGICAL_LINK_COMPLETE, hci_loglink_complete_evt, 6874 sizeof(struct hci_ev_logical_link_complete)), 6875 /* [0x46 = HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE] */ 6876 HCI_EV(HCI_EV_DISCONN_PHY_LINK_COMPLETE, 6877 hci_disconn_phylink_complete_evt, 6878 sizeof(struct hci_ev_disconn_phy_link_complete)), 6879 #endif 6880 /* [0x48 = HCI_EV_NUM_COMP_BLOCKS] */ 6881 HCI_EV(HCI_EV_NUM_COMP_BLOCKS, hci_num_comp_blocks_evt, 6882 sizeof(struct hci_ev_num_comp_blocks)), 6883 /* [0xff = HCI_EV_VENDOR] */ 6884 HCI_EV_VL(HCI_EV_VENDOR, msft_vendor_evt, 0, HCI_MAX_EVENT_SIZE), 6885 }; 6886 6887 static void hci_event_func(struct hci_dev *hdev, u8 event, struct sk_buff *skb, 6888 u16 *opcode, u8 *status, 6889 hci_req_complete_t *req_complete, 6890 hci_req_complete_skb_t *req_complete_skb) 6891 { 6892 const struct hci_ev *ev = &hci_ev_table[event]; 6893 void *data; 6894 6895 if (!ev->func) 6896 return; 6897 6898 if (skb->len < ev->min_len) { 6899 bt_dev_err(hdev, "unexpected event 0x%2.2x length: %u < %u", 6900 event, skb->len, ev->min_len); 6901 return; 6902 } 6903 6904 /* Just warn if the length is over max_len size it still be 6905 * possible to partially parse the event so leave to callback to 6906 * decide if that is acceptable. 6907 */ 6908 if (skb->len > ev->max_len) 6909 bt_dev_warn_ratelimited(hdev, 6910 "unexpected event 0x%2.2x length: %u > %u", 6911 event, skb->len, ev->max_len); 6912 6913 data = hci_ev_skb_pull(hdev, skb, event, ev->min_len); 6914 if (!data) 6915 return; 6916 6917 if (ev->req) 6918 ev->func_req(hdev, data, skb, opcode, status, req_complete, 6919 req_complete_skb); 6920 else 6921 ev->func(hdev, data, skb); 6922 } 6923 6924 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 6925 { 6926 struct hci_event_hdr *hdr = (void *) skb->data; 6927 hci_req_complete_t req_complete = NULL; 6928 hci_req_complete_skb_t req_complete_skb = NULL; 6929 struct sk_buff *orig_skb = NULL; 6930 u8 status = 0, event, req_evt = 0; 6931 u16 opcode = HCI_OP_NOP; 6932 6933 if (skb->len < sizeof(*hdr)) { 6934 bt_dev_err(hdev, "Malformed HCI Event"); 6935 goto done; 6936 } 6937 6938 event = hdr->evt; 6939 if (!event) { 6940 bt_dev_warn(hdev, "Received unexpected HCI Event 0x%2.2x", 6941 event); 6942 goto done; 6943 } 6944 6945 /* Only match event if command OGF is not for LE */ 6946 if (hdev->sent_cmd && 6947 hci_opcode_ogf(hci_skb_opcode(hdev->sent_cmd)) != 0x08 && 6948 hci_skb_event(hdev->sent_cmd) == event) { 6949 hci_req_cmd_complete(hdev, hci_skb_opcode(hdev->sent_cmd), 6950 status, &req_complete, &req_complete_skb); 6951 req_evt = event; 6952 } 6953 6954 /* If it looks like we might end up having to call 6955 * req_complete_skb, store a pristine copy of the skb since the 6956 * various handlers may modify the original one through 6957 * skb_pull() calls, etc. 6958 */ 6959 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 6960 event == HCI_EV_CMD_COMPLETE) 6961 orig_skb = skb_clone(skb, GFP_KERNEL); 6962 6963 skb_pull(skb, HCI_EVENT_HDR_SIZE); 6964 6965 /* Store wake reason if we're suspended */ 6966 hci_store_wake_reason(hdev, event, skb); 6967 6968 bt_dev_dbg(hdev, "event 0x%2.2x", event); 6969 6970 hci_event_func(hdev, event, skb, &opcode, &status, &req_complete, 6971 &req_complete_skb); 6972 6973 if (req_complete) { 6974 req_complete(hdev, status, opcode); 6975 } else if (req_complete_skb) { 6976 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 6977 kfree_skb(orig_skb); 6978 orig_skb = NULL; 6979 } 6980 req_complete_skb(hdev, status, opcode, orig_skb); 6981 } 6982 6983 done: 6984 kfree_skb(orig_skb); 6985 kfree_skb(skb); 6986 hdev->stat.evt_rx++; 6987 } 6988