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