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 40 #define ZERO_KEY "\x00\x00\x00\x00\x00\x00\x00\x00" \ 41 "\x00\x00\x00\x00\x00\x00\x00\x00" 42 43 /* Handle HCI Event packets */ 44 45 static void hci_cc_inquiry_cancel(struct hci_dev *hdev, struct sk_buff *skb, 46 u8 *new_status) 47 { 48 __u8 status = *((__u8 *) skb->data); 49 50 BT_DBG("%s status 0x%2.2x", hdev->name, status); 51 52 /* It is possible that we receive Inquiry Complete event right 53 * before we receive Inquiry Cancel Command Complete event, in 54 * which case the latter event should have status of Command 55 * Disallowed (0x0c). This should not be treated as error, since 56 * we actually achieve what Inquiry Cancel wants to achieve, 57 * which is to end the last Inquiry session. 58 */ 59 if (status == 0x0c && !test_bit(HCI_INQUIRY, &hdev->flags)) { 60 bt_dev_warn(hdev, "Ignoring error of Inquiry Cancel command"); 61 status = 0x00; 62 } 63 64 *new_status = status; 65 66 if (status) 67 return; 68 69 clear_bit(HCI_INQUIRY, &hdev->flags); 70 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 71 wake_up_bit(&hdev->flags, HCI_INQUIRY); 72 73 hci_dev_lock(hdev); 74 /* Set discovery state to stopped if we're not doing LE active 75 * scanning. 76 */ 77 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 78 hdev->le_scan_type != LE_SCAN_ACTIVE) 79 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 80 hci_dev_unlock(hdev); 81 82 hci_conn_check_pending(hdev); 83 } 84 85 static void hci_cc_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb) 86 { 87 __u8 status = *((__u8 *) skb->data); 88 89 BT_DBG("%s status 0x%2.2x", hdev->name, status); 90 91 if (status) 92 return; 93 94 hci_dev_set_flag(hdev, HCI_PERIODIC_INQ); 95 } 96 97 static void hci_cc_exit_periodic_inq(struct hci_dev *hdev, struct sk_buff *skb) 98 { 99 __u8 status = *((__u8 *) skb->data); 100 101 BT_DBG("%s status 0x%2.2x", hdev->name, status); 102 103 if (status) 104 return; 105 106 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); 107 108 hci_conn_check_pending(hdev); 109 } 110 111 static void hci_cc_remote_name_req_cancel(struct hci_dev *hdev, 112 struct sk_buff *skb) 113 { 114 BT_DBG("%s", hdev->name); 115 } 116 117 static void hci_cc_role_discovery(struct hci_dev *hdev, struct sk_buff *skb) 118 { 119 struct hci_rp_role_discovery *rp = (void *) skb->data; 120 struct hci_conn *conn; 121 122 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 123 124 if (rp->status) 125 return; 126 127 hci_dev_lock(hdev); 128 129 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 130 if (conn) 131 conn->role = rp->role; 132 133 hci_dev_unlock(hdev); 134 } 135 136 static void hci_cc_read_link_policy(struct hci_dev *hdev, struct sk_buff *skb) 137 { 138 struct hci_rp_read_link_policy *rp = (void *) skb->data; 139 struct hci_conn *conn; 140 141 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 142 143 if (rp->status) 144 return; 145 146 hci_dev_lock(hdev); 147 148 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 149 if (conn) 150 conn->link_policy = __le16_to_cpu(rp->policy); 151 152 hci_dev_unlock(hdev); 153 } 154 155 static void hci_cc_write_link_policy(struct hci_dev *hdev, struct sk_buff *skb) 156 { 157 struct hci_rp_write_link_policy *rp = (void *) skb->data; 158 struct hci_conn *conn; 159 void *sent; 160 161 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 162 163 if (rp->status) 164 return; 165 166 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LINK_POLICY); 167 if (!sent) 168 return; 169 170 hci_dev_lock(hdev); 171 172 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 173 if (conn) 174 conn->link_policy = get_unaligned_le16(sent + 2); 175 176 hci_dev_unlock(hdev); 177 } 178 179 static void hci_cc_read_def_link_policy(struct hci_dev *hdev, 180 struct sk_buff *skb) 181 { 182 struct hci_rp_read_def_link_policy *rp = (void *) skb->data; 183 184 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 185 186 if (rp->status) 187 return; 188 189 hdev->link_policy = __le16_to_cpu(rp->policy); 190 } 191 192 static void hci_cc_write_def_link_policy(struct hci_dev *hdev, 193 struct sk_buff *skb) 194 { 195 __u8 status = *((__u8 *) skb->data); 196 void *sent; 197 198 BT_DBG("%s status 0x%2.2x", hdev->name, status); 199 200 if (status) 201 return; 202 203 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_LINK_POLICY); 204 if (!sent) 205 return; 206 207 hdev->link_policy = get_unaligned_le16(sent); 208 } 209 210 static void hci_cc_reset(struct hci_dev *hdev, struct sk_buff *skb) 211 { 212 __u8 status = *((__u8 *) skb->data); 213 214 BT_DBG("%s status 0x%2.2x", hdev->name, status); 215 216 clear_bit(HCI_RESET, &hdev->flags); 217 218 if (status) 219 return; 220 221 /* Reset all non-persistent flags */ 222 hci_dev_clear_volatile_flags(hdev); 223 224 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 225 226 hdev->inq_tx_power = HCI_TX_POWER_INVALID; 227 hdev->adv_tx_power = HCI_TX_POWER_INVALID; 228 229 memset(hdev->adv_data, 0, sizeof(hdev->adv_data)); 230 hdev->adv_data_len = 0; 231 232 memset(hdev->scan_rsp_data, 0, sizeof(hdev->scan_rsp_data)); 233 hdev->scan_rsp_data_len = 0; 234 235 hdev->le_scan_type = LE_SCAN_PASSIVE; 236 237 hdev->ssp_debug_mode = 0; 238 239 hci_bdaddr_list_clear(&hdev->le_white_list); 240 hci_bdaddr_list_clear(&hdev->le_resolv_list); 241 } 242 243 static void hci_cc_read_stored_link_key(struct hci_dev *hdev, 244 struct sk_buff *skb) 245 { 246 struct hci_rp_read_stored_link_key *rp = (void *)skb->data; 247 struct hci_cp_read_stored_link_key *sent; 248 249 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 250 251 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_STORED_LINK_KEY); 252 if (!sent) 253 return; 254 255 if (!rp->status && sent->read_all == 0x01) { 256 hdev->stored_max_keys = rp->max_keys; 257 hdev->stored_num_keys = rp->num_keys; 258 } 259 } 260 261 static void hci_cc_delete_stored_link_key(struct hci_dev *hdev, 262 struct sk_buff *skb) 263 { 264 struct hci_rp_delete_stored_link_key *rp = (void *)skb->data; 265 266 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 267 268 if (rp->status) 269 return; 270 271 if (rp->num_keys <= hdev->stored_num_keys) 272 hdev->stored_num_keys -= rp->num_keys; 273 else 274 hdev->stored_num_keys = 0; 275 } 276 277 static void hci_cc_write_local_name(struct hci_dev *hdev, struct sk_buff *skb) 278 { 279 __u8 status = *((__u8 *) skb->data); 280 void *sent; 281 282 BT_DBG("%s status 0x%2.2x", hdev->name, status); 283 284 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LOCAL_NAME); 285 if (!sent) 286 return; 287 288 hci_dev_lock(hdev); 289 290 if (hci_dev_test_flag(hdev, HCI_MGMT)) 291 mgmt_set_local_name_complete(hdev, sent, status); 292 else if (!status) 293 memcpy(hdev->dev_name, sent, HCI_MAX_NAME_LENGTH); 294 295 hci_dev_unlock(hdev); 296 } 297 298 static void hci_cc_read_local_name(struct hci_dev *hdev, struct sk_buff *skb) 299 { 300 struct hci_rp_read_local_name *rp = (void *) skb->data; 301 302 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 303 304 if (rp->status) 305 return; 306 307 if (hci_dev_test_flag(hdev, HCI_SETUP) || 308 hci_dev_test_flag(hdev, HCI_CONFIG)) 309 memcpy(hdev->dev_name, rp->name, HCI_MAX_NAME_LENGTH); 310 } 311 312 static void hci_cc_write_auth_enable(struct hci_dev *hdev, struct sk_buff *skb) 313 { 314 __u8 status = *((__u8 *) skb->data); 315 void *sent; 316 317 BT_DBG("%s status 0x%2.2x", hdev->name, status); 318 319 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_ENABLE); 320 if (!sent) 321 return; 322 323 hci_dev_lock(hdev); 324 325 if (!status) { 326 __u8 param = *((__u8 *) sent); 327 328 if (param == AUTH_ENABLED) 329 set_bit(HCI_AUTH, &hdev->flags); 330 else 331 clear_bit(HCI_AUTH, &hdev->flags); 332 } 333 334 if (hci_dev_test_flag(hdev, HCI_MGMT)) 335 mgmt_auth_enable_complete(hdev, status); 336 337 hci_dev_unlock(hdev); 338 } 339 340 static void hci_cc_write_encrypt_mode(struct hci_dev *hdev, struct sk_buff *skb) 341 { 342 __u8 status = *((__u8 *) skb->data); 343 __u8 param; 344 void *sent; 345 346 BT_DBG("%s status 0x%2.2x", hdev->name, status); 347 348 if (status) 349 return; 350 351 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_ENCRYPT_MODE); 352 if (!sent) 353 return; 354 355 param = *((__u8 *) sent); 356 357 if (param) 358 set_bit(HCI_ENCRYPT, &hdev->flags); 359 else 360 clear_bit(HCI_ENCRYPT, &hdev->flags); 361 } 362 363 static void hci_cc_write_scan_enable(struct hci_dev *hdev, struct sk_buff *skb) 364 { 365 __u8 status = *((__u8 *) skb->data); 366 __u8 param; 367 void *sent; 368 369 BT_DBG("%s status 0x%2.2x", hdev->name, status); 370 371 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SCAN_ENABLE); 372 if (!sent) 373 return; 374 375 param = *((__u8 *) sent); 376 377 hci_dev_lock(hdev); 378 379 if (status) { 380 hdev->discov_timeout = 0; 381 goto done; 382 } 383 384 if (param & SCAN_INQUIRY) 385 set_bit(HCI_ISCAN, &hdev->flags); 386 else 387 clear_bit(HCI_ISCAN, &hdev->flags); 388 389 if (param & SCAN_PAGE) 390 set_bit(HCI_PSCAN, &hdev->flags); 391 else 392 clear_bit(HCI_PSCAN, &hdev->flags); 393 394 done: 395 hci_dev_unlock(hdev); 396 } 397 398 static void hci_cc_read_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb) 399 { 400 struct hci_rp_read_class_of_dev *rp = (void *) skb->data; 401 402 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 403 404 if (rp->status) 405 return; 406 407 memcpy(hdev->dev_class, rp->dev_class, 3); 408 409 BT_DBG("%s class 0x%.2x%.2x%.2x", hdev->name, 410 hdev->dev_class[2], hdev->dev_class[1], hdev->dev_class[0]); 411 } 412 413 static void hci_cc_write_class_of_dev(struct hci_dev *hdev, struct sk_buff *skb) 414 { 415 __u8 status = *((__u8 *) skb->data); 416 void *sent; 417 418 BT_DBG("%s status 0x%2.2x", hdev->name, status); 419 420 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_CLASS_OF_DEV); 421 if (!sent) 422 return; 423 424 hci_dev_lock(hdev); 425 426 if (status == 0) 427 memcpy(hdev->dev_class, sent, 3); 428 429 if (hci_dev_test_flag(hdev, HCI_MGMT)) 430 mgmt_set_class_of_dev_complete(hdev, sent, status); 431 432 hci_dev_unlock(hdev); 433 } 434 435 static void hci_cc_read_voice_setting(struct hci_dev *hdev, struct sk_buff *skb) 436 { 437 struct hci_rp_read_voice_setting *rp = (void *) skb->data; 438 __u16 setting; 439 440 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 441 442 if (rp->status) 443 return; 444 445 setting = __le16_to_cpu(rp->voice_setting); 446 447 if (hdev->voice_setting == setting) 448 return; 449 450 hdev->voice_setting = setting; 451 452 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting); 453 454 if (hdev->notify) 455 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 456 } 457 458 static void hci_cc_write_voice_setting(struct hci_dev *hdev, 459 struct sk_buff *skb) 460 { 461 __u8 status = *((__u8 *) skb->data); 462 __u16 setting; 463 void *sent; 464 465 BT_DBG("%s status 0x%2.2x", hdev->name, status); 466 467 if (status) 468 return; 469 470 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_VOICE_SETTING); 471 if (!sent) 472 return; 473 474 setting = get_unaligned_le16(sent); 475 476 if (hdev->voice_setting == setting) 477 return; 478 479 hdev->voice_setting = setting; 480 481 BT_DBG("%s voice setting 0x%4.4x", hdev->name, setting); 482 483 if (hdev->notify) 484 hdev->notify(hdev, HCI_NOTIFY_VOICE_SETTING); 485 } 486 487 static void hci_cc_read_num_supported_iac(struct hci_dev *hdev, 488 struct sk_buff *skb) 489 { 490 struct hci_rp_read_num_supported_iac *rp = (void *) skb->data; 491 492 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 493 494 if (rp->status) 495 return; 496 497 hdev->num_iac = rp->num_iac; 498 499 BT_DBG("%s num iac %d", hdev->name, hdev->num_iac); 500 } 501 502 static void hci_cc_write_ssp_mode(struct hci_dev *hdev, struct sk_buff *skb) 503 { 504 __u8 status = *((__u8 *) skb->data); 505 struct hci_cp_write_ssp_mode *sent; 506 507 BT_DBG("%s status 0x%2.2x", hdev->name, status); 508 509 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_MODE); 510 if (!sent) 511 return; 512 513 hci_dev_lock(hdev); 514 515 if (!status) { 516 if (sent->mode) 517 hdev->features[1][0] |= LMP_HOST_SSP; 518 else 519 hdev->features[1][0] &= ~LMP_HOST_SSP; 520 } 521 522 if (hci_dev_test_flag(hdev, HCI_MGMT)) 523 mgmt_ssp_enable_complete(hdev, sent->mode, status); 524 else if (!status) { 525 if (sent->mode) 526 hci_dev_set_flag(hdev, HCI_SSP_ENABLED); 527 else 528 hci_dev_clear_flag(hdev, HCI_SSP_ENABLED); 529 } 530 531 hci_dev_unlock(hdev); 532 } 533 534 static void hci_cc_write_sc_support(struct hci_dev *hdev, struct sk_buff *skb) 535 { 536 u8 status = *((u8 *) skb->data); 537 struct hci_cp_write_sc_support *sent; 538 539 BT_DBG("%s status 0x%2.2x", hdev->name, status); 540 541 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SC_SUPPORT); 542 if (!sent) 543 return; 544 545 hci_dev_lock(hdev); 546 547 if (!status) { 548 if (sent->support) 549 hdev->features[1][0] |= LMP_HOST_SC; 550 else 551 hdev->features[1][0] &= ~LMP_HOST_SC; 552 } 553 554 if (!hci_dev_test_flag(hdev, HCI_MGMT) && !status) { 555 if (sent->support) 556 hci_dev_set_flag(hdev, HCI_SC_ENABLED); 557 else 558 hci_dev_clear_flag(hdev, HCI_SC_ENABLED); 559 } 560 561 hci_dev_unlock(hdev); 562 } 563 564 static void hci_cc_read_local_version(struct hci_dev *hdev, struct sk_buff *skb) 565 { 566 struct hci_rp_read_local_version *rp = (void *) skb->data; 567 568 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 569 570 if (rp->status) 571 return; 572 573 if (hci_dev_test_flag(hdev, HCI_SETUP) || 574 hci_dev_test_flag(hdev, HCI_CONFIG)) { 575 hdev->hci_ver = rp->hci_ver; 576 hdev->hci_rev = __le16_to_cpu(rp->hci_rev); 577 hdev->lmp_ver = rp->lmp_ver; 578 hdev->manufacturer = __le16_to_cpu(rp->manufacturer); 579 hdev->lmp_subver = __le16_to_cpu(rp->lmp_subver); 580 } 581 } 582 583 static void hci_cc_read_local_commands(struct hci_dev *hdev, 584 struct sk_buff *skb) 585 { 586 struct hci_rp_read_local_commands *rp = (void *) skb->data; 587 588 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 589 590 if (rp->status) 591 return; 592 593 if (hci_dev_test_flag(hdev, HCI_SETUP) || 594 hci_dev_test_flag(hdev, HCI_CONFIG)) 595 memcpy(hdev->commands, rp->commands, sizeof(hdev->commands)); 596 } 597 598 static void hci_cc_read_auth_payload_timeout(struct hci_dev *hdev, 599 struct sk_buff *skb) 600 { 601 struct hci_rp_read_auth_payload_to *rp = (void *)skb->data; 602 struct hci_conn *conn; 603 604 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 605 606 if (rp->status) 607 return; 608 609 hci_dev_lock(hdev); 610 611 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 612 if (conn) 613 conn->auth_payload_timeout = __le16_to_cpu(rp->timeout); 614 615 hci_dev_unlock(hdev); 616 } 617 618 static void hci_cc_write_auth_payload_timeout(struct hci_dev *hdev, 619 struct sk_buff *skb) 620 { 621 struct hci_rp_write_auth_payload_to *rp = (void *)skb->data; 622 struct hci_conn *conn; 623 void *sent; 624 625 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 626 627 if (rp->status) 628 return; 629 630 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO); 631 if (!sent) 632 return; 633 634 hci_dev_lock(hdev); 635 636 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 637 if (conn) 638 conn->auth_payload_timeout = get_unaligned_le16(sent + 2); 639 640 hci_dev_unlock(hdev); 641 } 642 643 static void hci_cc_read_local_features(struct hci_dev *hdev, 644 struct sk_buff *skb) 645 { 646 struct hci_rp_read_local_features *rp = (void *) skb->data; 647 648 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 649 650 if (rp->status) 651 return; 652 653 memcpy(hdev->features, rp->features, 8); 654 655 /* Adjust default settings according to features 656 * supported by device. */ 657 658 if (hdev->features[0][0] & LMP_3SLOT) 659 hdev->pkt_type |= (HCI_DM3 | HCI_DH3); 660 661 if (hdev->features[0][0] & LMP_5SLOT) 662 hdev->pkt_type |= (HCI_DM5 | HCI_DH5); 663 664 if (hdev->features[0][1] & LMP_HV2) { 665 hdev->pkt_type |= (HCI_HV2); 666 hdev->esco_type |= (ESCO_HV2); 667 } 668 669 if (hdev->features[0][1] & LMP_HV3) { 670 hdev->pkt_type |= (HCI_HV3); 671 hdev->esco_type |= (ESCO_HV3); 672 } 673 674 if (lmp_esco_capable(hdev)) 675 hdev->esco_type |= (ESCO_EV3); 676 677 if (hdev->features[0][4] & LMP_EV4) 678 hdev->esco_type |= (ESCO_EV4); 679 680 if (hdev->features[0][4] & LMP_EV5) 681 hdev->esco_type |= (ESCO_EV5); 682 683 if (hdev->features[0][5] & LMP_EDR_ESCO_2M) 684 hdev->esco_type |= (ESCO_2EV3); 685 686 if (hdev->features[0][5] & LMP_EDR_ESCO_3M) 687 hdev->esco_type |= (ESCO_3EV3); 688 689 if (hdev->features[0][5] & LMP_EDR_3S_ESCO) 690 hdev->esco_type |= (ESCO_2EV5 | ESCO_3EV5); 691 } 692 693 static void hci_cc_read_local_ext_features(struct hci_dev *hdev, 694 struct sk_buff *skb) 695 { 696 struct hci_rp_read_local_ext_features *rp = (void *) skb->data; 697 698 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 699 700 if (rp->status) 701 return; 702 703 if (hdev->max_page < rp->max_page) 704 hdev->max_page = rp->max_page; 705 706 if (rp->page < HCI_MAX_PAGES) 707 memcpy(hdev->features[rp->page], rp->features, 8); 708 } 709 710 static void hci_cc_read_flow_control_mode(struct hci_dev *hdev, 711 struct sk_buff *skb) 712 { 713 struct hci_rp_read_flow_control_mode *rp = (void *) skb->data; 714 715 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 716 717 if (rp->status) 718 return; 719 720 hdev->flow_ctl_mode = rp->mode; 721 } 722 723 static void hci_cc_read_buffer_size(struct hci_dev *hdev, struct sk_buff *skb) 724 { 725 struct hci_rp_read_buffer_size *rp = (void *) skb->data; 726 727 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 728 729 if (rp->status) 730 return; 731 732 hdev->acl_mtu = __le16_to_cpu(rp->acl_mtu); 733 hdev->sco_mtu = rp->sco_mtu; 734 hdev->acl_pkts = __le16_to_cpu(rp->acl_max_pkt); 735 hdev->sco_pkts = __le16_to_cpu(rp->sco_max_pkt); 736 737 if (test_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks)) { 738 hdev->sco_mtu = 64; 739 hdev->sco_pkts = 8; 740 } 741 742 hdev->acl_cnt = hdev->acl_pkts; 743 hdev->sco_cnt = hdev->sco_pkts; 744 745 BT_DBG("%s acl mtu %d:%d sco mtu %d:%d", hdev->name, hdev->acl_mtu, 746 hdev->acl_pkts, hdev->sco_mtu, hdev->sco_pkts); 747 } 748 749 static void hci_cc_read_bd_addr(struct hci_dev *hdev, struct sk_buff *skb) 750 { 751 struct hci_rp_read_bd_addr *rp = (void *) skb->data; 752 753 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 754 755 if (rp->status) 756 return; 757 758 if (test_bit(HCI_INIT, &hdev->flags)) 759 bacpy(&hdev->bdaddr, &rp->bdaddr); 760 761 if (hci_dev_test_flag(hdev, HCI_SETUP)) 762 bacpy(&hdev->setup_addr, &rp->bdaddr); 763 } 764 765 static void hci_cc_read_local_pairing_opts(struct hci_dev *hdev, 766 struct sk_buff *skb) 767 { 768 struct hci_rp_read_local_pairing_opts *rp = (void *) skb->data; 769 770 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 771 772 if (rp->status) 773 return; 774 775 if (hci_dev_test_flag(hdev, HCI_SETUP) || 776 hci_dev_test_flag(hdev, HCI_CONFIG)) { 777 hdev->pairing_opts = rp->pairing_opts; 778 hdev->max_enc_key_size = rp->max_key_size; 779 } 780 } 781 782 static void hci_cc_read_page_scan_activity(struct hci_dev *hdev, 783 struct sk_buff *skb) 784 { 785 struct hci_rp_read_page_scan_activity *rp = (void *) skb->data; 786 787 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 788 789 if (rp->status) 790 return; 791 792 if (test_bit(HCI_INIT, &hdev->flags)) { 793 hdev->page_scan_interval = __le16_to_cpu(rp->interval); 794 hdev->page_scan_window = __le16_to_cpu(rp->window); 795 } 796 } 797 798 static void hci_cc_write_page_scan_activity(struct hci_dev *hdev, 799 struct sk_buff *skb) 800 { 801 u8 status = *((u8 *) skb->data); 802 struct hci_cp_write_page_scan_activity *sent; 803 804 BT_DBG("%s status 0x%2.2x", hdev->name, status); 805 806 if (status) 807 return; 808 809 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_ACTIVITY); 810 if (!sent) 811 return; 812 813 hdev->page_scan_interval = __le16_to_cpu(sent->interval); 814 hdev->page_scan_window = __le16_to_cpu(sent->window); 815 } 816 817 static void hci_cc_read_page_scan_type(struct hci_dev *hdev, 818 struct sk_buff *skb) 819 { 820 struct hci_rp_read_page_scan_type *rp = (void *) skb->data; 821 822 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 823 824 if (rp->status) 825 return; 826 827 if (test_bit(HCI_INIT, &hdev->flags)) 828 hdev->page_scan_type = rp->type; 829 } 830 831 static void hci_cc_write_page_scan_type(struct hci_dev *hdev, 832 struct sk_buff *skb) 833 { 834 u8 status = *((u8 *) skb->data); 835 u8 *type; 836 837 BT_DBG("%s status 0x%2.2x", hdev->name, status); 838 839 if (status) 840 return; 841 842 type = hci_sent_cmd_data(hdev, HCI_OP_WRITE_PAGE_SCAN_TYPE); 843 if (type) 844 hdev->page_scan_type = *type; 845 } 846 847 static void hci_cc_read_data_block_size(struct hci_dev *hdev, 848 struct sk_buff *skb) 849 { 850 struct hci_rp_read_data_block_size *rp = (void *) skb->data; 851 852 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 853 854 if (rp->status) 855 return; 856 857 hdev->block_mtu = __le16_to_cpu(rp->max_acl_len); 858 hdev->block_len = __le16_to_cpu(rp->block_len); 859 hdev->num_blocks = __le16_to_cpu(rp->num_blocks); 860 861 hdev->block_cnt = hdev->num_blocks; 862 863 BT_DBG("%s blk mtu %d cnt %d len %d", hdev->name, hdev->block_mtu, 864 hdev->block_cnt, hdev->block_len); 865 } 866 867 static void hci_cc_read_clock(struct hci_dev *hdev, struct sk_buff *skb) 868 { 869 struct hci_rp_read_clock *rp = (void *) skb->data; 870 struct hci_cp_read_clock *cp; 871 struct hci_conn *conn; 872 873 BT_DBG("%s", hdev->name); 874 875 if (skb->len < sizeof(*rp)) 876 return; 877 878 if (rp->status) 879 return; 880 881 hci_dev_lock(hdev); 882 883 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_CLOCK); 884 if (!cp) 885 goto unlock; 886 887 if (cp->which == 0x00) { 888 hdev->clock = le32_to_cpu(rp->clock); 889 goto unlock; 890 } 891 892 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 893 if (conn) { 894 conn->clock = le32_to_cpu(rp->clock); 895 conn->clock_accuracy = le16_to_cpu(rp->accuracy); 896 } 897 898 unlock: 899 hci_dev_unlock(hdev); 900 } 901 902 static void hci_cc_read_local_amp_info(struct hci_dev *hdev, 903 struct sk_buff *skb) 904 { 905 struct hci_rp_read_local_amp_info *rp = (void *) skb->data; 906 907 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 908 909 if (rp->status) 910 return; 911 912 hdev->amp_status = rp->amp_status; 913 hdev->amp_total_bw = __le32_to_cpu(rp->total_bw); 914 hdev->amp_max_bw = __le32_to_cpu(rp->max_bw); 915 hdev->amp_min_latency = __le32_to_cpu(rp->min_latency); 916 hdev->amp_max_pdu = __le32_to_cpu(rp->max_pdu); 917 hdev->amp_type = rp->amp_type; 918 hdev->amp_pal_cap = __le16_to_cpu(rp->pal_cap); 919 hdev->amp_assoc_size = __le16_to_cpu(rp->max_assoc_size); 920 hdev->amp_be_flush_to = __le32_to_cpu(rp->be_flush_to); 921 hdev->amp_max_flush_to = __le32_to_cpu(rp->max_flush_to); 922 } 923 924 static void hci_cc_read_inq_rsp_tx_power(struct hci_dev *hdev, 925 struct sk_buff *skb) 926 { 927 struct hci_rp_read_inq_rsp_tx_power *rp = (void *) skb->data; 928 929 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 930 931 if (rp->status) 932 return; 933 934 hdev->inq_tx_power = rp->tx_power; 935 } 936 937 static void hci_cc_read_def_err_data_reporting(struct hci_dev *hdev, 938 struct sk_buff *skb) 939 { 940 struct hci_rp_read_def_err_data_reporting *rp = (void *)skb->data; 941 942 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 943 944 if (rp->status) 945 return; 946 947 hdev->err_data_reporting = rp->err_data_reporting; 948 } 949 950 static void hci_cc_write_def_err_data_reporting(struct hci_dev *hdev, 951 struct sk_buff *skb) 952 { 953 __u8 status = *((__u8 *)skb->data); 954 struct hci_cp_write_def_err_data_reporting *cp; 955 956 BT_DBG("%s status 0x%2.2x", hdev->name, status); 957 958 if (status) 959 return; 960 961 cp = hci_sent_cmd_data(hdev, HCI_OP_WRITE_DEF_ERR_DATA_REPORTING); 962 if (!cp) 963 return; 964 965 hdev->err_data_reporting = cp->err_data_reporting; 966 } 967 968 static void hci_cc_pin_code_reply(struct hci_dev *hdev, struct sk_buff *skb) 969 { 970 struct hci_rp_pin_code_reply *rp = (void *) skb->data; 971 struct hci_cp_pin_code_reply *cp; 972 struct hci_conn *conn; 973 974 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 975 976 hci_dev_lock(hdev); 977 978 if (hci_dev_test_flag(hdev, HCI_MGMT)) 979 mgmt_pin_code_reply_complete(hdev, &rp->bdaddr, rp->status); 980 981 if (rp->status) 982 goto unlock; 983 984 cp = hci_sent_cmd_data(hdev, HCI_OP_PIN_CODE_REPLY); 985 if (!cp) 986 goto unlock; 987 988 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 989 if (conn) 990 conn->pin_length = cp->pin_len; 991 992 unlock: 993 hci_dev_unlock(hdev); 994 } 995 996 static void hci_cc_pin_code_neg_reply(struct hci_dev *hdev, struct sk_buff *skb) 997 { 998 struct hci_rp_pin_code_neg_reply *rp = (void *) skb->data; 999 1000 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1001 1002 hci_dev_lock(hdev); 1003 1004 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1005 mgmt_pin_code_neg_reply_complete(hdev, &rp->bdaddr, 1006 rp->status); 1007 1008 hci_dev_unlock(hdev); 1009 } 1010 1011 static void hci_cc_le_read_buffer_size(struct hci_dev *hdev, 1012 struct sk_buff *skb) 1013 { 1014 struct hci_rp_le_read_buffer_size *rp = (void *) skb->data; 1015 1016 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1017 1018 if (rp->status) 1019 return; 1020 1021 hdev->le_mtu = __le16_to_cpu(rp->le_mtu); 1022 hdev->le_pkts = rp->le_max_pkt; 1023 1024 hdev->le_cnt = hdev->le_pkts; 1025 1026 BT_DBG("%s le mtu %d:%d", hdev->name, hdev->le_mtu, hdev->le_pkts); 1027 } 1028 1029 static void hci_cc_le_read_local_features(struct hci_dev *hdev, 1030 struct sk_buff *skb) 1031 { 1032 struct hci_rp_le_read_local_features *rp = (void *) skb->data; 1033 1034 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1035 1036 if (rp->status) 1037 return; 1038 1039 memcpy(hdev->le_features, rp->features, 8); 1040 } 1041 1042 static void hci_cc_le_read_adv_tx_power(struct hci_dev *hdev, 1043 struct sk_buff *skb) 1044 { 1045 struct hci_rp_le_read_adv_tx_power *rp = (void *) skb->data; 1046 1047 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1048 1049 if (rp->status) 1050 return; 1051 1052 hdev->adv_tx_power = rp->tx_power; 1053 } 1054 1055 static void hci_cc_user_confirm_reply(struct hci_dev *hdev, struct sk_buff *skb) 1056 { 1057 struct hci_rp_user_confirm_reply *rp = (void *) skb->data; 1058 1059 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1060 1061 hci_dev_lock(hdev); 1062 1063 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1064 mgmt_user_confirm_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 0, 1065 rp->status); 1066 1067 hci_dev_unlock(hdev); 1068 } 1069 1070 static void hci_cc_user_confirm_neg_reply(struct hci_dev *hdev, 1071 struct sk_buff *skb) 1072 { 1073 struct hci_rp_user_confirm_reply *rp = (void *) skb->data; 1074 1075 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1076 1077 hci_dev_lock(hdev); 1078 1079 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1080 mgmt_user_confirm_neg_reply_complete(hdev, &rp->bdaddr, 1081 ACL_LINK, 0, rp->status); 1082 1083 hci_dev_unlock(hdev); 1084 } 1085 1086 static void hci_cc_user_passkey_reply(struct hci_dev *hdev, struct sk_buff *skb) 1087 { 1088 struct hci_rp_user_confirm_reply *rp = (void *) skb->data; 1089 1090 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1091 1092 hci_dev_lock(hdev); 1093 1094 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1095 mgmt_user_passkey_reply_complete(hdev, &rp->bdaddr, ACL_LINK, 1096 0, rp->status); 1097 1098 hci_dev_unlock(hdev); 1099 } 1100 1101 static void hci_cc_user_passkey_neg_reply(struct hci_dev *hdev, 1102 struct sk_buff *skb) 1103 { 1104 struct hci_rp_user_confirm_reply *rp = (void *) skb->data; 1105 1106 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1107 1108 hci_dev_lock(hdev); 1109 1110 if (hci_dev_test_flag(hdev, HCI_MGMT)) 1111 mgmt_user_passkey_neg_reply_complete(hdev, &rp->bdaddr, 1112 ACL_LINK, 0, rp->status); 1113 1114 hci_dev_unlock(hdev); 1115 } 1116 1117 static void hci_cc_read_local_oob_data(struct hci_dev *hdev, 1118 struct sk_buff *skb) 1119 { 1120 struct hci_rp_read_local_oob_data *rp = (void *) skb->data; 1121 1122 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1123 } 1124 1125 static void hci_cc_read_local_oob_ext_data(struct hci_dev *hdev, 1126 struct sk_buff *skb) 1127 { 1128 struct hci_rp_read_local_oob_ext_data *rp = (void *) skb->data; 1129 1130 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1131 } 1132 1133 static void hci_cc_le_set_random_addr(struct hci_dev *hdev, struct sk_buff *skb) 1134 { 1135 __u8 status = *((__u8 *) skb->data); 1136 bdaddr_t *sent; 1137 1138 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1139 1140 if (status) 1141 return; 1142 1143 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_RANDOM_ADDR); 1144 if (!sent) 1145 return; 1146 1147 hci_dev_lock(hdev); 1148 1149 bacpy(&hdev->random_addr, sent); 1150 1151 hci_dev_unlock(hdev); 1152 } 1153 1154 static void hci_cc_le_set_default_phy(struct hci_dev *hdev, struct sk_buff *skb) 1155 { 1156 __u8 status = *((__u8 *) skb->data); 1157 struct hci_cp_le_set_default_phy *cp; 1158 1159 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1160 1161 if (status) 1162 return; 1163 1164 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_DEFAULT_PHY); 1165 if (!cp) 1166 return; 1167 1168 hci_dev_lock(hdev); 1169 1170 hdev->le_tx_def_phys = cp->tx_phys; 1171 hdev->le_rx_def_phys = cp->rx_phys; 1172 1173 hci_dev_unlock(hdev); 1174 } 1175 1176 static void hci_cc_le_set_adv_set_random_addr(struct hci_dev *hdev, 1177 struct sk_buff *skb) 1178 { 1179 __u8 status = *((__u8 *) skb->data); 1180 struct hci_cp_le_set_adv_set_rand_addr *cp; 1181 struct adv_info *adv_instance; 1182 1183 if (status) 1184 return; 1185 1186 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_SET_RAND_ADDR); 1187 if (!cp) 1188 return; 1189 1190 hci_dev_lock(hdev); 1191 1192 if (!hdev->cur_adv_instance) { 1193 /* Store in hdev for instance 0 (Set adv and Directed advs) */ 1194 bacpy(&hdev->random_addr, &cp->bdaddr); 1195 } else { 1196 adv_instance = hci_find_adv_instance(hdev, 1197 hdev->cur_adv_instance); 1198 if (adv_instance) 1199 bacpy(&adv_instance->random_addr, &cp->bdaddr); 1200 } 1201 1202 hci_dev_unlock(hdev); 1203 } 1204 1205 static void hci_cc_le_set_adv_enable(struct hci_dev *hdev, struct sk_buff *skb) 1206 { 1207 __u8 *sent, status = *((__u8 *) skb->data); 1208 1209 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1210 1211 if (status) 1212 return; 1213 1214 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_ENABLE); 1215 if (!sent) 1216 return; 1217 1218 hci_dev_lock(hdev); 1219 1220 /* If we're doing connection initiation as peripheral. Set a 1221 * timeout in case something goes wrong. 1222 */ 1223 if (*sent) { 1224 struct hci_conn *conn; 1225 1226 hci_dev_set_flag(hdev, HCI_LE_ADV); 1227 1228 conn = hci_lookup_le_connect(hdev); 1229 if (conn) 1230 queue_delayed_work(hdev->workqueue, 1231 &conn->le_conn_timeout, 1232 conn->conn_timeout); 1233 } else { 1234 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1235 } 1236 1237 hci_dev_unlock(hdev); 1238 } 1239 1240 static void hci_cc_le_set_ext_adv_enable(struct hci_dev *hdev, 1241 struct sk_buff *skb) 1242 { 1243 struct hci_cp_le_set_ext_adv_enable *cp; 1244 __u8 status = *((__u8 *) skb->data); 1245 1246 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1247 1248 if (status) 1249 return; 1250 1251 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_ENABLE); 1252 if (!cp) 1253 return; 1254 1255 hci_dev_lock(hdev); 1256 1257 if (cp->enable) { 1258 struct hci_conn *conn; 1259 1260 hci_dev_set_flag(hdev, HCI_LE_ADV); 1261 1262 conn = hci_lookup_le_connect(hdev); 1263 if (conn) 1264 queue_delayed_work(hdev->workqueue, 1265 &conn->le_conn_timeout, 1266 conn->conn_timeout); 1267 } else { 1268 hci_dev_clear_flag(hdev, HCI_LE_ADV); 1269 } 1270 1271 hci_dev_unlock(hdev); 1272 } 1273 1274 static void hci_cc_le_set_scan_param(struct hci_dev *hdev, struct sk_buff *skb) 1275 { 1276 struct hci_cp_le_set_scan_param *cp; 1277 __u8 status = *((__u8 *) skb->data); 1278 1279 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1280 1281 if (status) 1282 return; 1283 1284 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_PARAM); 1285 if (!cp) 1286 return; 1287 1288 hci_dev_lock(hdev); 1289 1290 hdev->le_scan_type = cp->type; 1291 1292 hci_dev_unlock(hdev); 1293 } 1294 1295 static void hci_cc_le_set_ext_scan_param(struct hci_dev *hdev, 1296 struct sk_buff *skb) 1297 { 1298 struct hci_cp_le_set_ext_scan_params *cp; 1299 __u8 status = *((__u8 *) skb->data); 1300 struct hci_cp_le_scan_phy_params *phy_param; 1301 1302 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1303 1304 if (status) 1305 return; 1306 1307 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_PARAMS); 1308 if (!cp) 1309 return; 1310 1311 phy_param = (void *)cp->data; 1312 1313 hci_dev_lock(hdev); 1314 1315 hdev->le_scan_type = phy_param->type; 1316 1317 hci_dev_unlock(hdev); 1318 } 1319 1320 static bool has_pending_adv_report(struct hci_dev *hdev) 1321 { 1322 struct discovery_state *d = &hdev->discovery; 1323 1324 return bacmp(&d->last_adv_addr, BDADDR_ANY); 1325 } 1326 1327 static void clear_pending_adv_report(struct hci_dev *hdev) 1328 { 1329 struct discovery_state *d = &hdev->discovery; 1330 1331 bacpy(&d->last_adv_addr, BDADDR_ANY); 1332 d->last_adv_data_len = 0; 1333 } 1334 1335 static void store_pending_adv_report(struct hci_dev *hdev, bdaddr_t *bdaddr, 1336 u8 bdaddr_type, s8 rssi, u32 flags, 1337 u8 *data, u8 len) 1338 { 1339 struct discovery_state *d = &hdev->discovery; 1340 1341 bacpy(&d->last_adv_addr, bdaddr); 1342 d->last_adv_addr_type = bdaddr_type; 1343 d->last_adv_rssi = rssi; 1344 d->last_adv_flags = flags; 1345 memcpy(d->last_adv_data, data, len); 1346 d->last_adv_data_len = len; 1347 } 1348 1349 static void le_set_scan_enable_complete(struct hci_dev *hdev, u8 enable) 1350 { 1351 hci_dev_lock(hdev); 1352 1353 switch (enable) { 1354 case LE_SCAN_ENABLE: 1355 hci_dev_set_flag(hdev, HCI_LE_SCAN); 1356 if (hdev->le_scan_type == LE_SCAN_ACTIVE) 1357 clear_pending_adv_report(hdev); 1358 break; 1359 1360 case LE_SCAN_DISABLE: 1361 /* We do this here instead of when setting DISCOVERY_STOPPED 1362 * since the latter would potentially require waiting for 1363 * inquiry to stop too. 1364 */ 1365 if (has_pending_adv_report(hdev)) { 1366 struct discovery_state *d = &hdev->discovery; 1367 1368 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 1369 d->last_adv_addr_type, NULL, 1370 d->last_adv_rssi, d->last_adv_flags, 1371 d->last_adv_data, 1372 d->last_adv_data_len, NULL, 0); 1373 } 1374 1375 /* Cancel this timer so that we don't try to disable scanning 1376 * when it's already disabled. 1377 */ 1378 cancel_delayed_work(&hdev->le_scan_disable); 1379 1380 hci_dev_clear_flag(hdev, HCI_LE_SCAN); 1381 1382 /* The HCI_LE_SCAN_INTERRUPTED flag indicates that we 1383 * interrupted scanning due to a connect request. Mark 1384 * therefore discovery as stopped. If this was not 1385 * because of a connect request advertising might have 1386 * been disabled because of active scanning, so 1387 * re-enable it again if necessary. 1388 */ 1389 if (hci_dev_test_and_clear_flag(hdev, HCI_LE_SCAN_INTERRUPTED)) 1390 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 1391 else if (!hci_dev_test_flag(hdev, HCI_LE_ADV) && 1392 hdev->discovery.state == DISCOVERY_FINDING) 1393 hci_req_reenable_advertising(hdev); 1394 1395 break; 1396 1397 default: 1398 bt_dev_err(hdev, "use of reserved LE_Scan_Enable param %d", 1399 enable); 1400 break; 1401 } 1402 1403 hci_dev_unlock(hdev); 1404 } 1405 1406 static void hci_cc_le_set_scan_enable(struct hci_dev *hdev, 1407 struct sk_buff *skb) 1408 { 1409 struct hci_cp_le_set_scan_enable *cp; 1410 __u8 status = *((__u8 *) skb->data); 1411 1412 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1413 1414 if (status) 1415 return; 1416 1417 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_SCAN_ENABLE); 1418 if (!cp) 1419 return; 1420 1421 le_set_scan_enable_complete(hdev, cp->enable); 1422 } 1423 1424 static void hci_cc_le_set_ext_scan_enable(struct hci_dev *hdev, 1425 struct sk_buff *skb) 1426 { 1427 struct hci_cp_le_set_ext_scan_enable *cp; 1428 __u8 status = *((__u8 *) skb->data); 1429 1430 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1431 1432 if (status) 1433 return; 1434 1435 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_SCAN_ENABLE); 1436 if (!cp) 1437 return; 1438 1439 le_set_scan_enable_complete(hdev, cp->enable); 1440 } 1441 1442 static void hci_cc_le_read_num_adv_sets(struct hci_dev *hdev, 1443 struct sk_buff *skb) 1444 { 1445 struct hci_rp_le_read_num_supported_adv_sets *rp = (void *) skb->data; 1446 1447 BT_DBG("%s status 0x%2.2x No of Adv sets %u", hdev->name, rp->status, 1448 rp->num_of_sets); 1449 1450 if (rp->status) 1451 return; 1452 1453 hdev->le_num_of_adv_sets = rp->num_of_sets; 1454 } 1455 1456 static void hci_cc_le_read_white_list_size(struct hci_dev *hdev, 1457 struct sk_buff *skb) 1458 { 1459 struct hci_rp_le_read_white_list_size *rp = (void *) skb->data; 1460 1461 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size); 1462 1463 if (rp->status) 1464 return; 1465 1466 hdev->le_white_list_size = rp->size; 1467 } 1468 1469 static void hci_cc_le_clear_white_list(struct hci_dev *hdev, 1470 struct sk_buff *skb) 1471 { 1472 __u8 status = *((__u8 *) skb->data); 1473 1474 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1475 1476 if (status) 1477 return; 1478 1479 hci_bdaddr_list_clear(&hdev->le_white_list); 1480 } 1481 1482 static void hci_cc_le_add_to_white_list(struct hci_dev *hdev, 1483 struct sk_buff *skb) 1484 { 1485 struct hci_cp_le_add_to_white_list *sent; 1486 __u8 status = *((__u8 *) skb->data); 1487 1488 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1489 1490 if (status) 1491 return; 1492 1493 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_WHITE_LIST); 1494 if (!sent) 1495 return; 1496 1497 hci_bdaddr_list_add(&hdev->le_white_list, &sent->bdaddr, 1498 sent->bdaddr_type); 1499 } 1500 1501 static void hci_cc_le_del_from_white_list(struct hci_dev *hdev, 1502 struct sk_buff *skb) 1503 { 1504 struct hci_cp_le_del_from_white_list *sent; 1505 __u8 status = *((__u8 *) skb->data); 1506 1507 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1508 1509 if (status) 1510 return; 1511 1512 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_WHITE_LIST); 1513 if (!sent) 1514 return; 1515 1516 hci_bdaddr_list_del(&hdev->le_white_list, &sent->bdaddr, 1517 sent->bdaddr_type); 1518 } 1519 1520 static void hci_cc_le_read_supported_states(struct hci_dev *hdev, 1521 struct sk_buff *skb) 1522 { 1523 struct hci_rp_le_read_supported_states *rp = (void *) skb->data; 1524 1525 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1526 1527 if (rp->status) 1528 return; 1529 1530 memcpy(hdev->le_states, rp->le_states, 8); 1531 } 1532 1533 static void hci_cc_le_read_def_data_len(struct hci_dev *hdev, 1534 struct sk_buff *skb) 1535 { 1536 struct hci_rp_le_read_def_data_len *rp = (void *) skb->data; 1537 1538 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1539 1540 if (rp->status) 1541 return; 1542 1543 hdev->le_def_tx_len = le16_to_cpu(rp->tx_len); 1544 hdev->le_def_tx_time = le16_to_cpu(rp->tx_time); 1545 } 1546 1547 static void hci_cc_le_write_def_data_len(struct hci_dev *hdev, 1548 struct sk_buff *skb) 1549 { 1550 struct hci_cp_le_write_def_data_len *sent; 1551 __u8 status = *((__u8 *) skb->data); 1552 1553 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1554 1555 if (status) 1556 return; 1557 1558 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_WRITE_DEF_DATA_LEN); 1559 if (!sent) 1560 return; 1561 1562 hdev->le_def_tx_len = le16_to_cpu(sent->tx_len); 1563 hdev->le_def_tx_time = le16_to_cpu(sent->tx_time); 1564 } 1565 1566 static void hci_cc_le_add_to_resolv_list(struct hci_dev *hdev, 1567 struct sk_buff *skb) 1568 { 1569 struct hci_cp_le_add_to_resolv_list *sent; 1570 __u8 status = *((__u8 *) skb->data); 1571 1572 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1573 1574 if (status) 1575 return; 1576 1577 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_ADD_TO_RESOLV_LIST); 1578 if (!sent) 1579 return; 1580 1581 hci_bdaddr_list_add_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 1582 sent->bdaddr_type, sent->peer_irk, 1583 sent->local_irk); 1584 } 1585 1586 static void hci_cc_le_del_from_resolv_list(struct hci_dev *hdev, 1587 struct sk_buff *skb) 1588 { 1589 struct hci_cp_le_del_from_resolv_list *sent; 1590 __u8 status = *((__u8 *) skb->data); 1591 1592 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1593 1594 if (status) 1595 return; 1596 1597 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_DEL_FROM_RESOLV_LIST); 1598 if (!sent) 1599 return; 1600 1601 hci_bdaddr_list_del_with_irk(&hdev->le_resolv_list, &sent->bdaddr, 1602 sent->bdaddr_type); 1603 } 1604 1605 static void hci_cc_le_clear_resolv_list(struct hci_dev *hdev, 1606 struct sk_buff *skb) 1607 { 1608 __u8 status = *((__u8 *) skb->data); 1609 1610 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1611 1612 if (status) 1613 return; 1614 1615 hci_bdaddr_list_clear(&hdev->le_resolv_list); 1616 } 1617 1618 static void hci_cc_le_read_resolv_list_size(struct hci_dev *hdev, 1619 struct sk_buff *skb) 1620 { 1621 struct hci_rp_le_read_resolv_list_size *rp = (void *) skb->data; 1622 1623 BT_DBG("%s status 0x%2.2x size %u", hdev->name, rp->status, rp->size); 1624 1625 if (rp->status) 1626 return; 1627 1628 hdev->le_resolv_list_size = rp->size; 1629 } 1630 1631 static void hci_cc_le_set_addr_resolution_enable(struct hci_dev *hdev, 1632 struct sk_buff *skb) 1633 { 1634 __u8 *sent, status = *((__u8 *) skb->data); 1635 1636 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1637 1638 if (status) 1639 return; 1640 1641 sent = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADDR_RESOLV_ENABLE); 1642 if (!sent) 1643 return; 1644 1645 hci_dev_lock(hdev); 1646 1647 if (*sent) 1648 hci_dev_set_flag(hdev, HCI_LL_RPA_RESOLUTION); 1649 else 1650 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION); 1651 1652 hci_dev_unlock(hdev); 1653 } 1654 1655 static void hci_cc_le_read_max_data_len(struct hci_dev *hdev, 1656 struct sk_buff *skb) 1657 { 1658 struct hci_rp_le_read_max_data_len *rp = (void *) skb->data; 1659 1660 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1661 1662 if (rp->status) 1663 return; 1664 1665 hdev->le_max_tx_len = le16_to_cpu(rp->tx_len); 1666 hdev->le_max_tx_time = le16_to_cpu(rp->tx_time); 1667 hdev->le_max_rx_len = le16_to_cpu(rp->rx_len); 1668 hdev->le_max_rx_time = le16_to_cpu(rp->rx_time); 1669 } 1670 1671 static void hci_cc_write_le_host_supported(struct hci_dev *hdev, 1672 struct sk_buff *skb) 1673 { 1674 struct hci_cp_write_le_host_supported *sent; 1675 __u8 status = *((__u8 *) skb->data); 1676 1677 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1678 1679 if (status) 1680 return; 1681 1682 sent = hci_sent_cmd_data(hdev, HCI_OP_WRITE_LE_HOST_SUPPORTED); 1683 if (!sent) 1684 return; 1685 1686 hci_dev_lock(hdev); 1687 1688 if (sent->le) { 1689 hdev->features[1][0] |= LMP_HOST_LE; 1690 hci_dev_set_flag(hdev, HCI_LE_ENABLED); 1691 } else { 1692 hdev->features[1][0] &= ~LMP_HOST_LE; 1693 hci_dev_clear_flag(hdev, HCI_LE_ENABLED); 1694 hci_dev_clear_flag(hdev, HCI_ADVERTISING); 1695 } 1696 1697 if (sent->simul) 1698 hdev->features[1][0] |= LMP_HOST_LE_BREDR; 1699 else 1700 hdev->features[1][0] &= ~LMP_HOST_LE_BREDR; 1701 1702 hci_dev_unlock(hdev); 1703 } 1704 1705 static void hci_cc_set_adv_param(struct hci_dev *hdev, struct sk_buff *skb) 1706 { 1707 struct hci_cp_le_set_adv_param *cp; 1708 u8 status = *((u8 *) skb->data); 1709 1710 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1711 1712 if (status) 1713 return; 1714 1715 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_ADV_PARAM); 1716 if (!cp) 1717 return; 1718 1719 hci_dev_lock(hdev); 1720 hdev->adv_addr_type = cp->own_address_type; 1721 hci_dev_unlock(hdev); 1722 } 1723 1724 static void hci_cc_set_ext_adv_param(struct hci_dev *hdev, struct sk_buff *skb) 1725 { 1726 struct hci_rp_le_set_ext_adv_params *rp = (void *) skb->data; 1727 struct hci_cp_le_set_ext_adv_params *cp; 1728 struct adv_info *adv_instance; 1729 1730 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1731 1732 if (rp->status) 1733 return; 1734 1735 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_SET_EXT_ADV_PARAMS); 1736 if (!cp) 1737 return; 1738 1739 hci_dev_lock(hdev); 1740 hdev->adv_addr_type = cp->own_addr_type; 1741 if (!hdev->cur_adv_instance) { 1742 /* Store in hdev for instance 0 */ 1743 hdev->adv_tx_power = rp->tx_power; 1744 } else { 1745 adv_instance = hci_find_adv_instance(hdev, 1746 hdev->cur_adv_instance); 1747 if (adv_instance) 1748 adv_instance->tx_power = rp->tx_power; 1749 } 1750 /* Update adv data as tx power is known now */ 1751 hci_req_update_adv_data(hdev, hdev->cur_adv_instance); 1752 hci_dev_unlock(hdev); 1753 } 1754 1755 static void hci_cc_read_rssi(struct hci_dev *hdev, struct sk_buff *skb) 1756 { 1757 struct hci_rp_read_rssi *rp = (void *) skb->data; 1758 struct hci_conn *conn; 1759 1760 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1761 1762 if (rp->status) 1763 return; 1764 1765 hci_dev_lock(hdev); 1766 1767 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1768 if (conn) 1769 conn->rssi = rp->rssi; 1770 1771 hci_dev_unlock(hdev); 1772 } 1773 1774 static void hci_cc_read_tx_power(struct hci_dev *hdev, struct sk_buff *skb) 1775 { 1776 struct hci_cp_read_tx_power *sent; 1777 struct hci_rp_read_tx_power *rp = (void *) skb->data; 1778 struct hci_conn *conn; 1779 1780 BT_DBG("%s status 0x%2.2x", hdev->name, rp->status); 1781 1782 if (rp->status) 1783 return; 1784 1785 sent = hci_sent_cmd_data(hdev, HCI_OP_READ_TX_POWER); 1786 if (!sent) 1787 return; 1788 1789 hci_dev_lock(hdev); 1790 1791 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(rp->handle)); 1792 if (!conn) 1793 goto unlock; 1794 1795 switch (sent->type) { 1796 case 0x00: 1797 conn->tx_power = rp->tx_power; 1798 break; 1799 case 0x01: 1800 conn->max_tx_power = rp->tx_power; 1801 break; 1802 } 1803 1804 unlock: 1805 hci_dev_unlock(hdev); 1806 } 1807 1808 static void hci_cc_write_ssp_debug_mode(struct hci_dev *hdev, struct sk_buff *skb) 1809 { 1810 u8 status = *((u8 *) skb->data); 1811 u8 *mode; 1812 1813 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1814 1815 if (status) 1816 return; 1817 1818 mode = hci_sent_cmd_data(hdev, HCI_OP_WRITE_SSP_DEBUG_MODE); 1819 if (mode) 1820 hdev->ssp_debug_mode = *mode; 1821 } 1822 1823 static void hci_cs_inquiry(struct hci_dev *hdev, __u8 status) 1824 { 1825 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1826 1827 if (status) { 1828 hci_conn_check_pending(hdev); 1829 return; 1830 } 1831 1832 set_bit(HCI_INQUIRY, &hdev->flags); 1833 } 1834 1835 static void hci_cs_create_conn(struct hci_dev *hdev, __u8 status) 1836 { 1837 struct hci_cp_create_conn *cp; 1838 struct hci_conn *conn; 1839 1840 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1841 1842 cp = hci_sent_cmd_data(hdev, HCI_OP_CREATE_CONN); 1843 if (!cp) 1844 return; 1845 1846 hci_dev_lock(hdev); 1847 1848 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 1849 1850 BT_DBG("%s bdaddr %pMR hcon %p", hdev->name, &cp->bdaddr, conn); 1851 1852 if (status) { 1853 if (conn && conn->state == BT_CONNECT) { 1854 if (status != 0x0c || conn->attempt > 2) { 1855 conn->state = BT_CLOSED; 1856 hci_connect_cfm(conn, status); 1857 hci_conn_del(conn); 1858 } else 1859 conn->state = BT_CONNECT2; 1860 } 1861 } else { 1862 if (!conn) { 1863 conn = hci_conn_add(hdev, ACL_LINK, &cp->bdaddr, 1864 HCI_ROLE_MASTER); 1865 if (!conn) 1866 bt_dev_err(hdev, "no memory for new connection"); 1867 } 1868 } 1869 1870 hci_dev_unlock(hdev); 1871 } 1872 1873 static void hci_cs_add_sco(struct hci_dev *hdev, __u8 status) 1874 { 1875 struct hci_cp_add_sco *cp; 1876 struct hci_conn *acl, *sco; 1877 __u16 handle; 1878 1879 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1880 1881 if (!status) 1882 return; 1883 1884 cp = hci_sent_cmd_data(hdev, HCI_OP_ADD_SCO); 1885 if (!cp) 1886 return; 1887 1888 handle = __le16_to_cpu(cp->handle); 1889 1890 BT_DBG("%s handle 0x%4.4x", hdev->name, handle); 1891 1892 hci_dev_lock(hdev); 1893 1894 acl = hci_conn_hash_lookup_handle(hdev, handle); 1895 if (acl) { 1896 sco = acl->link; 1897 if (sco) { 1898 sco->state = BT_CLOSED; 1899 1900 hci_connect_cfm(sco, status); 1901 hci_conn_del(sco); 1902 } 1903 } 1904 1905 hci_dev_unlock(hdev); 1906 } 1907 1908 static void hci_cs_auth_requested(struct hci_dev *hdev, __u8 status) 1909 { 1910 struct hci_cp_auth_requested *cp; 1911 struct hci_conn *conn; 1912 1913 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1914 1915 if (!status) 1916 return; 1917 1918 cp = hci_sent_cmd_data(hdev, HCI_OP_AUTH_REQUESTED); 1919 if (!cp) 1920 return; 1921 1922 hci_dev_lock(hdev); 1923 1924 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 1925 if (conn) { 1926 if (conn->state == BT_CONFIG) { 1927 hci_connect_cfm(conn, status); 1928 hci_conn_drop(conn); 1929 } 1930 } 1931 1932 hci_dev_unlock(hdev); 1933 } 1934 1935 static void hci_cs_set_conn_encrypt(struct hci_dev *hdev, __u8 status) 1936 { 1937 struct hci_cp_set_conn_encrypt *cp; 1938 struct hci_conn *conn; 1939 1940 BT_DBG("%s status 0x%2.2x", hdev->name, status); 1941 1942 if (!status) 1943 return; 1944 1945 cp = hci_sent_cmd_data(hdev, HCI_OP_SET_CONN_ENCRYPT); 1946 if (!cp) 1947 return; 1948 1949 hci_dev_lock(hdev); 1950 1951 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 1952 if (conn) { 1953 if (conn->state == BT_CONFIG) { 1954 hci_connect_cfm(conn, status); 1955 hci_conn_drop(conn); 1956 } 1957 } 1958 1959 hci_dev_unlock(hdev); 1960 } 1961 1962 static int hci_outgoing_auth_needed(struct hci_dev *hdev, 1963 struct hci_conn *conn) 1964 { 1965 if (conn->state != BT_CONFIG || !conn->out) 1966 return 0; 1967 1968 if (conn->pending_sec_level == BT_SECURITY_SDP) 1969 return 0; 1970 1971 /* Only request authentication for SSP connections or non-SSP 1972 * devices with sec_level MEDIUM or HIGH or if MITM protection 1973 * is requested. 1974 */ 1975 if (!hci_conn_ssp_enabled(conn) && !(conn->auth_type & 0x01) && 1976 conn->pending_sec_level != BT_SECURITY_FIPS && 1977 conn->pending_sec_level != BT_SECURITY_HIGH && 1978 conn->pending_sec_level != BT_SECURITY_MEDIUM) 1979 return 0; 1980 1981 return 1; 1982 } 1983 1984 static int hci_resolve_name(struct hci_dev *hdev, 1985 struct inquiry_entry *e) 1986 { 1987 struct hci_cp_remote_name_req cp; 1988 1989 memset(&cp, 0, sizeof(cp)); 1990 1991 bacpy(&cp.bdaddr, &e->data.bdaddr); 1992 cp.pscan_rep_mode = e->data.pscan_rep_mode; 1993 cp.pscan_mode = e->data.pscan_mode; 1994 cp.clock_offset = e->data.clock_offset; 1995 1996 return hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 1997 } 1998 1999 static bool hci_resolve_next_name(struct hci_dev *hdev) 2000 { 2001 struct discovery_state *discov = &hdev->discovery; 2002 struct inquiry_entry *e; 2003 2004 if (list_empty(&discov->resolve)) 2005 return false; 2006 2007 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2008 if (!e) 2009 return false; 2010 2011 if (hci_resolve_name(hdev, e) == 0) { 2012 e->name_state = NAME_PENDING; 2013 return true; 2014 } 2015 2016 return false; 2017 } 2018 2019 static void hci_check_pending_name(struct hci_dev *hdev, struct hci_conn *conn, 2020 bdaddr_t *bdaddr, u8 *name, u8 name_len) 2021 { 2022 struct discovery_state *discov = &hdev->discovery; 2023 struct inquiry_entry *e; 2024 2025 /* Update the mgmt connected state if necessary. Be careful with 2026 * conn objects that exist but are not (yet) connected however. 2027 * Only those in BT_CONFIG or BT_CONNECTED states can be 2028 * considered connected. 2029 */ 2030 if (conn && 2031 (conn->state == BT_CONFIG || conn->state == BT_CONNECTED) && 2032 !test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 2033 mgmt_device_connected(hdev, conn, 0, name, name_len); 2034 2035 if (discov->state == DISCOVERY_STOPPED) 2036 return; 2037 2038 if (discov->state == DISCOVERY_STOPPING) 2039 goto discov_complete; 2040 2041 if (discov->state != DISCOVERY_RESOLVING) 2042 return; 2043 2044 e = hci_inquiry_cache_lookup_resolve(hdev, bdaddr, NAME_PENDING); 2045 /* If the device was not found in a list of found devices names of which 2046 * are pending. there is no need to continue resolving a next name as it 2047 * will be done upon receiving another Remote Name Request Complete 2048 * Event */ 2049 if (!e) 2050 return; 2051 2052 list_del(&e->list); 2053 if (name) { 2054 e->name_state = NAME_KNOWN; 2055 mgmt_remote_name(hdev, bdaddr, ACL_LINK, 0x00, 2056 e->data.rssi, name, name_len); 2057 } else { 2058 e->name_state = NAME_NOT_KNOWN; 2059 } 2060 2061 if (hci_resolve_next_name(hdev)) 2062 return; 2063 2064 discov_complete: 2065 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2066 } 2067 2068 static void hci_cs_remote_name_req(struct hci_dev *hdev, __u8 status) 2069 { 2070 struct hci_cp_remote_name_req *cp; 2071 struct hci_conn *conn; 2072 2073 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2074 2075 /* If successful wait for the name req complete event before 2076 * checking for the need to do authentication */ 2077 if (!status) 2078 return; 2079 2080 cp = hci_sent_cmd_data(hdev, HCI_OP_REMOTE_NAME_REQ); 2081 if (!cp) 2082 return; 2083 2084 hci_dev_lock(hdev); 2085 2086 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2087 2088 if (hci_dev_test_flag(hdev, HCI_MGMT)) 2089 hci_check_pending_name(hdev, conn, &cp->bdaddr, NULL, 0); 2090 2091 if (!conn) 2092 goto unlock; 2093 2094 if (!hci_outgoing_auth_needed(hdev, conn)) 2095 goto unlock; 2096 2097 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2098 struct hci_cp_auth_requested auth_cp; 2099 2100 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2101 2102 auth_cp.handle = __cpu_to_le16(conn->handle); 2103 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, 2104 sizeof(auth_cp), &auth_cp); 2105 } 2106 2107 unlock: 2108 hci_dev_unlock(hdev); 2109 } 2110 2111 static void hci_cs_read_remote_features(struct hci_dev *hdev, __u8 status) 2112 { 2113 struct hci_cp_read_remote_features *cp; 2114 struct hci_conn *conn; 2115 2116 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2117 2118 if (!status) 2119 return; 2120 2121 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_FEATURES); 2122 if (!cp) 2123 return; 2124 2125 hci_dev_lock(hdev); 2126 2127 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2128 if (conn) { 2129 if (conn->state == BT_CONFIG) { 2130 hci_connect_cfm(conn, status); 2131 hci_conn_drop(conn); 2132 } 2133 } 2134 2135 hci_dev_unlock(hdev); 2136 } 2137 2138 static void hci_cs_read_remote_ext_features(struct hci_dev *hdev, __u8 status) 2139 { 2140 struct hci_cp_read_remote_ext_features *cp; 2141 struct hci_conn *conn; 2142 2143 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2144 2145 if (!status) 2146 return; 2147 2148 cp = hci_sent_cmd_data(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES); 2149 if (!cp) 2150 return; 2151 2152 hci_dev_lock(hdev); 2153 2154 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2155 if (conn) { 2156 if (conn->state == BT_CONFIG) { 2157 hci_connect_cfm(conn, status); 2158 hci_conn_drop(conn); 2159 } 2160 } 2161 2162 hci_dev_unlock(hdev); 2163 } 2164 2165 static void hci_cs_setup_sync_conn(struct hci_dev *hdev, __u8 status) 2166 { 2167 struct hci_cp_setup_sync_conn *cp; 2168 struct hci_conn *acl, *sco; 2169 __u16 handle; 2170 2171 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2172 2173 if (!status) 2174 return; 2175 2176 cp = hci_sent_cmd_data(hdev, HCI_OP_SETUP_SYNC_CONN); 2177 if (!cp) 2178 return; 2179 2180 handle = __le16_to_cpu(cp->handle); 2181 2182 BT_DBG("%s handle 0x%4.4x", hdev->name, handle); 2183 2184 hci_dev_lock(hdev); 2185 2186 acl = hci_conn_hash_lookup_handle(hdev, handle); 2187 if (acl) { 2188 sco = acl->link; 2189 if (sco) { 2190 sco->state = BT_CLOSED; 2191 2192 hci_connect_cfm(sco, status); 2193 hci_conn_del(sco); 2194 } 2195 } 2196 2197 hci_dev_unlock(hdev); 2198 } 2199 2200 static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status) 2201 { 2202 struct hci_cp_sniff_mode *cp; 2203 struct hci_conn *conn; 2204 2205 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2206 2207 if (!status) 2208 return; 2209 2210 cp = hci_sent_cmd_data(hdev, HCI_OP_SNIFF_MODE); 2211 if (!cp) 2212 return; 2213 2214 hci_dev_lock(hdev); 2215 2216 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2217 if (conn) { 2218 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2219 2220 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2221 hci_sco_setup(conn, status); 2222 } 2223 2224 hci_dev_unlock(hdev); 2225 } 2226 2227 static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status) 2228 { 2229 struct hci_cp_exit_sniff_mode *cp; 2230 struct hci_conn *conn; 2231 2232 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2233 2234 if (!status) 2235 return; 2236 2237 cp = hci_sent_cmd_data(hdev, HCI_OP_EXIT_SNIFF_MODE); 2238 if (!cp) 2239 return; 2240 2241 hci_dev_lock(hdev); 2242 2243 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2244 if (conn) { 2245 clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->flags); 2246 2247 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 2248 hci_sco_setup(conn, status); 2249 } 2250 2251 hci_dev_unlock(hdev); 2252 } 2253 2254 static void hci_cs_disconnect(struct hci_dev *hdev, u8 status) 2255 { 2256 struct hci_cp_disconnect *cp; 2257 struct hci_conn *conn; 2258 2259 if (!status) 2260 return; 2261 2262 cp = hci_sent_cmd_data(hdev, HCI_OP_DISCONNECT); 2263 if (!cp) 2264 return; 2265 2266 hci_dev_lock(hdev); 2267 2268 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2269 if (conn) { 2270 u8 type = conn->type; 2271 2272 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2273 conn->dst_type, status); 2274 2275 /* If the disconnection failed for any reason, the upper layer 2276 * does not retry to disconnect in current implementation. 2277 * Hence, we need to do some basic cleanup here and re-enable 2278 * advertising if necessary. 2279 */ 2280 hci_conn_del(conn); 2281 if (type == LE_LINK) 2282 hci_req_reenable_advertising(hdev); 2283 } 2284 2285 hci_dev_unlock(hdev); 2286 } 2287 2288 static void cs_le_create_conn(struct hci_dev *hdev, bdaddr_t *peer_addr, 2289 u8 peer_addr_type, u8 own_address_type, 2290 u8 filter_policy) 2291 { 2292 struct hci_conn *conn; 2293 2294 conn = hci_conn_hash_lookup_le(hdev, peer_addr, 2295 peer_addr_type); 2296 if (!conn) 2297 return; 2298 2299 /* Store the initiator and responder address information which 2300 * is needed for SMP. These values will not change during the 2301 * lifetime of the connection. 2302 */ 2303 conn->init_addr_type = own_address_type; 2304 if (own_address_type == ADDR_LE_DEV_RANDOM) 2305 bacpy(&conn->init_addr, &hdev->random_addr); 2306 else 2307 bacpy(&conn->init_addr, &hdev->bdaddr); 2308 2309 conn->resp_addr_type = peer_addr_type; 2310 bacpy(&conn->resp_addr, peer_addr); 2311 2312 /* We don't want the connection attempt to stick around 2313 * indefinitely since LE doesn't have a page timeout concept 2314 * like BR/EDR. Set a timer for any connection that doesn't use 2315 * the white list for connecting. 2316 */ 2317 if (filter_policy == HCI_LE_USE_PEER_ADDR) 2318 queue_delayed_work(conn->hdev->workqueue, 2319 &conn->le_conn_timeout, 2320 conn->conn_timeout); 2321 } 2322 2323 static void hci_cs_le_create_conn(struct hci_dev *hdev, u8 status) 2324 { 2325 struct hci_cp_le_create_conn *cp; 2326 2327 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2328 2329 /* All connection failure handling is taken care of by the 2330 * hci_le_conn_failed function which is triggered by the HCI 2331 * request completion callbacks used for connecting. 2332 */ 2333 if (status) 2334 return; 2335 2336 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_CREATE_CONN); 2337 if (!cp) 2338 return; 2339 2340 hci_dev_lock(hdev); 2341 2342 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2343 cp->own_address_type, cp->filter_policy); 2344 2345 hci_dev_unlock(hdev); 2346 } 2347 2348 static void hci_cs_le_ext_create_conn(struct hci_dev *hdev, u8 status) 2349 { 2350 struct hci_cp_le_ext_create_conn *cp; 2351 2352 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2353 2354 /* All connection failure handling is taken care of by the 2355 * hci_le_conn_failed function which is triggered by the HCI 2356 * request completion callbacks used for connecting. 2357 */ 2358 if (status) 2359 return; 2360 2361 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_EXT_CREATE_CONN); 2362 if (!cp) 2363 return; 2364 2365 hci_dev_lock(hdev); 2366 2367 cs_le_create_conn(hdev, &cp->peer_addr, cp->peer_addr_type, 2368 cp->own_addr_type, cp->filter_policy); 2369 2370 hci_dev_unlock(hdev); 2371 } 2372 2373 static void hci_cs_le_read_remote_features(struct hci_dev *hdev, u8 status) 2374 { 2375 struct hci_cp_le_read_remote_features *cp; 2376 struct hci_conn *conn; 2377 2378 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2379 2380 if (!status) 2381 return; 2382 2383 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_READ_REMOTE_FEATURES); 2384 if (!cp) 2385 return; 2386 2387 hci_dev_lock(hdev); 2388 2389 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2390 if (conn) { 2391 if (conn->state == BT_CONFIG) { 2392 hci_connect_cfm(conn, status); 2393 hci_conn_drop(conn); 2394 } 2395 } 2396 2397 hci_dev_unlock(hdev); 2398 } 2399 2400 static void hci_cs_le_start_enc(struct hci_dev *hdev, u8 status) 2401 { 2402 struct hci_cp_le_start_enc *cp; 2403 struct hci_conn *conn; 2404 2405 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2406 2407 if (!status) 2408 return; 2409 2410 hci_dev_lock(hdev); 2411 2412 cp = hci_sent_cmd_data(hdev, HCI_OP_LE_START_ENC); 2413 if (!cp) 2414 goto unlock; 2415 2416 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle)); 2417 if (!conn) 2418 goto unlock; 2419 2420 if (conn->state != BT_CONNECTED) 2421 goto unlock; 2422 2423 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 2424 hci_conn_drop(conn); 2425 2426 unlock: 2427 hci_dev_unlock(hdev); 2428 } 2429 2430 static void hci_cs_switch_role(struct hci_dev *hdev, u8 status) 2431 { 2432 struct hci_cp_switch_role *cp; 2433 struct hci_conn *conn; 2434 2435 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2436 2437 if (!status) 2438 return; 2439 2440 cp = hci_sent_cmd_data(hdev, HCI_OP_SWITCH_ROLE); 2441 if (!cp) 2442 return; 2443 2444 hci_dev_lock(hdev); 2445 2446 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr); 2447 if (conn) 2448 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 2449 2450 hci_dev_unlock(hdev); 2451 } 2452 2453 static void hci_inquiry_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) 2454 { 2455 __u8 status = *((__u8 *) skb->data); 2456 struct discovery_state *discov = &hdev->discovery; 2457 struct inquiry_entry *e; 2458 2459 BT_DBG("%s status 0x%2.2x", hdev->name, status); 2460 2461 hci_conn_check_pending(hdev); 2462 2463 if (!test_and_clear_bit(HCI_INQUIRY, &hdev->flags)) 2464 return; 2465 2466 smp_mb__after_atomic(); /* wake_up_bit advises about this barrier */ 2467 wake_up_bit(&hdev->flags, HCI_INQUIRY); 2468 2469 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 2470 return; 2471 2472 hci_dev_lock(hdev); 2473 2474 if (discov->state != DISCOVERY_FINDING) 2475 goto unlock; 2476 2477 if (list_empty(&discov->resolve)) { 2478 /* When BR/EDR inquiry is active and no LE scanning is in 2479 * progress, then change discovery state to indicate completion. 2480 * 2481 * When running LE scanning and BR/EDR inquiry simultaneously 2482 * and the LE scan already finished, then change the discovery 2483 * state to indicate completion. 2484 */ 2485 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 2486 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 2487 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2488 goto unlock; 2489 } 2490 2491 e = hci_inquiry_cache_lookup_resolve(hdev, BDADDR_ANY, NAME_NEEDED); 2492 if (e && hci_resolve_name(hdev, e) == 0) { 2493 e->name_state = NAME_PENDING; 2494 hci_discovery_set_state(hdev, DISCOVERY_RESOLVING); 2495 } else { 2496 /* When BR/EDR inquiry is active and no LE scanning is in 2497 * progress, then change discovery state to indicate completion. 2498 * 2499 * When running LE scanning and BR/EDR inquiry simultaneously 2500 * and the LE scan already finished, then change the discovery 2501 * state to indicate completion. 2502 */ 2503 if (!hci_dev_test_flag(hdev, HCI_LE_SCAN) || 2504 !test_bit(HCI_QUIRK_SIMULTANEOUS_DISCOVERY, &hdev->quirks)) 2505 hci_discovery_set_state(hdev, DISCOVERY_STOPPED); 2506 } 2507 2508 unlock: 2509 hci_dev_unlock(hdev); 2510 } 2511 2512 static void hci_inquiry_result_evt(struct hci_dev *hdev, struct sk_buff *skb) 2513 { 2514 struct inquiry_data data; 2515 struct inquiry_info *info = (void *) (skb->data + 1); 2516 int num_rsp = *((__u8 *) skb->data); 2517 2518 BT_DBG("%s num_rsp %d", hdev->name, num_rsp); 2519 2520 if (!num_rsp) 2521 return; 2522 2523 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 2524 return; 2525 2526 hci_dev_lock(hdev); 2527 2528 for (; num_rsp; num_rsp--, info++) { 2529 u32 flags; 2530 2531 bacpy(&data.bdaddr, &info->bdaddr); 2532 data.pscan_rep_mode = info->pscan_rep_mode; 2533 data.pscan_period_mode = info->pscan_period_mode; 2534 data.pscan_mode = info->pscan_mode; 2535 memcpy(data.dev_class, info->dev_class, 3); 2536 data.clock_offset = info->clock_offset; 2537 data.rssi = HCI_RSSI_INVALID; 2538 data.ssp_mode = 0x00; 2539 2540 flags = hci_inquiry_cache_update(hdev, &data, false); 2541 2542 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 2543 info->dev_class, HCI_RSSI_INVALID, 2544 flags, NULL, 0, NULL, 0); 2545 } 2546 2547 hci_dev_unlock(hdev); 2548 } 2549 2550 static void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) 2551 { 2552 struct hci_ev_conn_complete *ev = (void *) skb->data; 2553 struct inquiry_entry *ie; 2554 struct hci_conn *conn; 2555 2556 BT_DBG("%s", hdev->name); 2557 2558 hci_dev_lock(hdev); 2559 2560 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 2561 if (!conn) { 2562 /* Connection may not exist if auto-connected. Check the inquiry 2563 * cache to see if we've already discovered this bdaddr before. 2564 * If found and link is an ACL type, create a connection class 2565 * automatically. 2566 */ 2567 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 2568 if (ie && ev->link_type == ACL_LINK) { 2569 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, 2570 HCI_ROLE_SLAVE); 2571 if (!conn) { 2572 bt_dev_err(hdev, "no memory for new conn"); 2573 goto unlock; 2574 } 2575 } else { 2576 if (ev->link_type != SCO_LINK) 2577 goto unlock; 2578 2579 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, 2580 &ev->bdaddr); 2581 if (!conn) 2582 goto unlock; 2583 2584 conn->type = SCO_LINK; 2585 } 2586 } 2587 2588 if (!ev->status) { 2589 conn->handle = __le16_to_cpu(ev->handle); 2590 2591 if (conn->type == ACL_LINK) { 2592 conn->state = BT_CONFIG; 2593 hci_conn_hold(conn); 2594 2595 if (!conn->out && !hci_conn_ssp_enabled(conn) && 2596 !hci_find_link_key(hdev, &ev->bdaddr)) 2597 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 2598 else 2599 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 2600 } else 2601 conn->state = BT_CONNECTED; 2602 2603 hci_debugfs_create_conn(conn); 2604 hci_conn_add_sysfs(conn); 2605 2606 if (test_bit(HCI_AUTH, &hdev->flags)) 2607 set_bit(HCI_CONN_AUTH, &conn->flags); 2608 2609 if (test_bit(HCI_ENCRYPT, &hdev->flags)) 2610 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 2611 2612 /* Get remote features */ 2613 if (conn->type == ACL_LINK) { 2614 struct hci_cp_read_remote_features cp; 2615 cp.handle = ev->handle; 2616 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_FEATURES, 2617 sizeof(cp), &cp); 2618 2619 hci_req_update_scan(hdev); 2620 } 2621 2622 /* Set packet type for incoming connection */ 2623 if (!conn->out && hdev->hci_ver < BLUETOOTH_VER_2_0) { 2624 struct hci_cp_change_conn_ptype cp; 2625 cp.handle = ev->handle; 2626 cp.pkt_type = cpu_to_le16(conn->pkt_type); 2627 hci_send_cmd(hdev, HCI_OP_CHANGE_CONN_PTYPE, sizeof(cp), 2628 &cp); 2629 } 2630 } else { 2631 conn->state = BT_CLOSED; 2632 if (conn->type == ACL_LINK) 2633 mgmt_connect_failed(hdev, &conn->dst, conn->type, 2634 conn->dst_type, ev->status); 2635 } 2636 2637 if (conn->type == ACL_LINK) 2638 hci_sco_setup(conn, ev->status); 2639 2640 if (ev->status) { 2641 hci_connect_cfm(conn, ev->status); 2642 hci_conn_del(conn); 2643 } else if (ev->link_type == SCO_LINK) { 2644 switch (conn->setting & SCO_AIRMODE_MASK) { 2645 case SCO_AIRMODE_CVSD: 2646 if (hdev->notify) 2647 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 2648 break; 2649 } 2650 2651 hci_connect_cfm(conn, ev->status); 2652 } 2653 2654 unlock: 2655 hci_dev_unlock(hdev); 2656 2657 hci_conn_check_pending(hdev); 2658 } 2659 2660 static void hci_reject_conn(struct hci_dev *hdev, bdaddr_t *bdaddr) 2661 { 2662 struct hci_cp_reject_conn_req cp; 2663 2664 bacpy(&cp.bdaddr, bdaddr); 2665 cp.reason = HCI_ERROR_REJ_BAD_ADDR; 2666 hci_send_cmd(hdev, HCI_OP_REJECT_CONN_REQ, sizeof(cp), &cp); 2667 } 2668 2669 static void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *skb) 2670 { 2671 struct hci_ev_conn_request *ev = (void *) skb->data; 2672 int mask = hdev->link_mode; 2673 struct inquiry_entry *ie; 2674 struct hci_conn *conn; 2675 __u8 flags = 0; 2676 2677 BT_DBG("%s bdaddr %pMR type 0x%x", hdev->name, &ev->bdaddr, 2678 ev->link_type); 2679 2680 mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type, 2681 &flags); 2682 2683 if (!(mask & HCI_LM_ACCEPT)) { 2684 hci_reject_conn(hdev, &ev->bdaddr); 2685 return; 2686 } 2687 2688 if (hci_bdaddr_list_lookup(&hdev->blacklist, &ev->bdaddr, 2689 BDADDR_BREDR)) { 2690 hci_reject_conn(hdev, &ev->bdaddr); 2691 return; 2692 } 2693 2694 /* Require HCI_CONNECTABLE or a whitelist entry to accept the 2695 * connection. These features are only touched through mgmt so 2696 * only do the checks if HCI_MGMT is set. 2697 */ 2698 if (hci_dev_test_flag(hdev, HCI_MGMT) && 2699 !hci_dev_test_flag(hdev, HCI_CONNECTABLE) && 2700 !hci_bdaddr_list_lookup(&hdev->whitelist, &ev->bdaddr, 2701 BDADDR_BREDR)) { 2702 hci_reject_conn(hdev, &ev->bdaddr); 2703 return; 2704 } 2705 2706 /* Connection accepted */ 2707 2708 hci_dev_lock(hdev); 2709 2710 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 2711 if (ie) 2712 memcpy(ie->data.dev_class, ev->dev_class, 3); 2713 2714 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, 2715 &ev->bdaddr); 2716 if (!conn) { 2717 conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr, 2718 HCI_ROLE_SLAVE); 2719 if (!conn) { 2720 bt_dev_err(hdev, "no memory for new connection"); 2721 hci_dev_unlock(hdev); 2722 return; 2723 } 2724 } 2725 2726 memcpy(conn->dev_class, ev->dev_class, 3); 2727 2728 hci_dev_unlock(hdev); 2729 2730 if (ev->link_type == ACL_LINK || 2731 (!(flags & HCI_PROTO_DEFER) && !lmp_esco_capable(hdev))) { 2732 struct hci_cp_accept_conn_req cp; 2733 conn->state = BT_CONNECT; 2734 2735 bacpy(&cp.bdaddr, &ev->bdaddr); 2736 2737 if (lmp_rswitch_capable(hdev) && (mask & HCI_LM_MASTER)) 2738 cp.role = 0x00; /* Become master */ 2739 else 2740 cp.role = 0x01; /* Remain slave */ 2741 2742 hci_send_cmd(hdev, HCI_OP_ACCEPT_CONN_REQ, sizeof(cp), &cp); 2743 } else if (!(flags & HCI_PROTO_DEFER)) { 2744 struct hci_cp_accept_sync_conn_req cp; 2745 conn->state = BT_CONNECT; 2746 2747 bacpy(&cp.bdaddr, &ev->bdaddr); 2748 cp.pkt_type = cpu_to_le16(conn->pkt_type); 2749 2750 cp.tx_bandwidth = cpu_to_le32(0x00001f40); 2751 cp.rx_bandwidth = cpu_to_le32(0x00001f40); 2752 cp.max_latency = cpu_to_le16(0xffff); 2753 cp.content_format = cpu_to_le16(hdev->voice_setting); 2754 cp.retrans_effort = 0xff; 2755 2756 hci_send_cmd(hdev, HCI_OP_ACCEPT_SYNC_CONN_REQ, sizeof(cp), 2757 &cp); 2758 } else { 2759 conn->state = BT_CONNECT2; 2760 hci_connect_cfm(conn, 0); 2761 } 2762 } 2763 2764 static u8 hci_to_mgmt_reason(u8 err) 2765 { 2766 switch (err) { 2767 case HCI_ERROR_CONNECTION_TIMEOUT: 2768 return MGMT_DEV_DISCONN_TIMEOUT; 2769 case HCI_ERROR_REMOTE_USER_TERM: 2770 case HCI_ERROR_REMOTE_LOW_RESOURCES: 2771 case HCI_ERROR_REMOTE_POWER_OFF: 2772 return MGMT_DEV_DISCONN_REMOTE; 2773 case HCI_ERROR_LOCAL_HOST_TERM: 2774 return MGMT_DEV_DISCONN_LOCAL_HOST; 2775 default: 2776 return MGMT_DEV_DISCONN_UNKNOWN; 2777 } 2778 } 2779 2780 static void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) 2781 { 2782 struct hci_ev_disconn_complete *ev = (void *) skb->data; 2783 u8 reason; 2784 struct hci_conn_params *params; 2785 struct hci_conn *conn; 2786 bool mgmt_connected; 2787 u8 type; 2788 2789 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 2790 2791 hci_dev_lock(hdev); 2792 2793 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 2794 if (!conn) 2795 goto unlock; 2796 2797 if (ev->status) { 2798 mgmt_disconnect_failed(hdev, &conn->dst, conn->type, 2799 conn->dst_type, ev->status); 2800 goto unlock; 2801 } 2802 2803 conn->state = BT_CLOSED; 2804 2805 mgmt_connected = test_and_clear_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags); 2806 2807 if (test_bit(HCI_CONN_AUTH_FAILURE, &conn->flags)) 2808 reason = MGMT_DEV_DISCONN_AUTH_FAILURE; 2809 else 2810 reason = hci_to_mgmt_reason(ev->reason); 2811 2812 mgmt_device_disconnected(hdev, &conn->dst, conn->type, conn->dst_type, 2813 reason, mgmt_connected); 2814 2815 if (conn->type == ACL_LINK) { 2816 if (test_bit(HCI_CONN_FLUSH_KEY, &conn->flags)) 2817 hci_remove_link_key(hdev, &conn->dst); 2818 2819 hci_req_update_scan(hdev); 2820 } 2821 2822 params = hci_conn_params_lookup(hdev, &conn->dst, conn->dst_type); 2823 if (params) { 2824 switch (params->auto_connect) { 2825 case HCI_AUTO_CONN_LINK_LOSS: 2826 if (ev->reason != HCI_ERROR_CONNECTION_TIMEOUT) 2827 break; 2828 /* Fall through */ 2829 2830 case HCI_AUTO_CONN_DIRECT: 2831 case HCI_AUTO_CONN_ALWAYS: 2832 list_del_init(¶ms->action); 2833 list_add(¶ms->action, &hdev->pend_le_conns); 2834 hci_update_background_scan(hdev); 2835 break; 2836 2837 default: 2838 break; 2839 } 2840 } 2841 2842 type = conn->type; 2843 2844 hci_disconn_cfm(conn, ev->reason); 2845 hci_conn_del(conn); 2846 2847 /* The suspend notifier is waiting for all devices to disconnect so 2848 * clear the bit from pending tasks and inform the wait queue. 2849 */ 2850 if (list_empty(&hdev->conn_hash.list) && 2851 test_and_clear_bit(SUSPEND_DISCONNECTING, hdev->suspend_tasks)) { 2852 wake_up(&hdev->suspend_wait_q); 2853 } 2854 2855 /* Re-enable advertising if necessary, since it might 2856 * have been disabled by the connection. From the 2857 * HCI_LE_Set_Advertise_Enable command description in 2858 * the core specification (v4.0): 2859 * "The Controller shall continue advertising until the Host 2860 * issues an LE_Set_Advertise_Enable command with 2861 * Advertising_Enable set to 0x00 (Advertising is disabled) 2862 * or until a connection is created or until the Advertising 2863 * is timed out due to Directed Advertising." 2864 */ 2865 if (type == LE_LINK) 2866 hci_req_reenable_advertising(hdev); 2867 2868 unlock: 2869 hci_dev_unlock(hdev); 2870 } 2871 2872 static void hci_auth_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) 2873 { 2874 struct hci_ev_auth_complete *ev = (void *) skb->data; 2875 struct hci_conn *conn; 2876 2877 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 2878 2879 hci_dev_lock(hdev); 2880 2881 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 2882 if (!conn) 2883 goto unlock; 2884 2885 if (!ev->status) { 2886 clear_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 2887 2888 if (!hci_conn_ssp_enabled(conn) && 2889 test_bit(HCI_CONN_REAUTH_PEND, &conn->flags)) { 2890 bt_dev_info(hdev, "re-auth of legacy device is not possible."); 2891 } else { 2892 set_bit(HCI_CONN_AUTH, &conn->flags); 2893 conn->sec_level = conn->pending_sec_level; 2894 } 2895 } else { 2896 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 2897 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 2898 2899 mgmt_auth_failed(conn, ev->status); 2900 } 2901 2902 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 2903 clear_bit(HCI_CONN_REAUTH_PEND, &conn->flags); 2904 2905 if (conn->state == BT_CONFIG) { 2906 if (!ev->status && hci_conn_ssp_enabled(conn)) { 2907 struct hci_cp_set_conn_encrypt cp; 2908 cp.handle = ev->handle; 2909 cp.encrypt = 0x01; 2910 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 2911 &cp); 2912 } else { 2913 conn->state = BT_CONNECTED; 2914 hci_connect_cfm(conn, ev->status); 2915 hci_conn_drop(conn); 2916 } 2917 } else { 2918 hci_auth_cfm(conn, ev->status); 2919 2920 hci_conn_hold(conn); 2921 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 2922 hci_conn_drop(conn); 2923 } 2924 2925 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) { 2926 if (!ev->status) { 2927 struct hci_cp_set_conn_encrypt cp; 2928 cp.handle = ev->handle; 2929 cp.encrypt = 0x01; 2930 hci_send_cmd(hdev, HCI_OP_SET_CONN_ENCRYPT, sizeof(cp), 2931 &cp); 2932 } else { 2933 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 2934 hci_encrypt_cfm(conn, ev->status); 2935 } 2936 } 2937 2938 unlock: 2939 hci_dev_unlock(hdev); 2940 } 2941 2942 static void hci_remote_name_evt(struct hci_dev *hdev, struct sk_buff *skb) 2943 { 2944 struct hci_ev_remote_name *ev = (void *) skb->data; 2945 struct hci_conn *conn; 2946 2947 BT_DBG("%s", hdev->name); 2948 2949 hci_conn_check_pending(hdev); 2950 2951 hci_dev_lock(hdev); 2952 2953 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 2954 2955 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 2956 goto check_auth; 2957 2958 if (ev->status == 0) 2959 hci_check_pending_name(hdev, conn, &ev->bdaddr, ev->name, 2960 strnlen(ev->name, HCI_MAX_NAME_LENGTH)); 2961 else 2962 hci_check_pending_name(hdev, conn, &ev->bdaddr, NULL, 0); 2963 2964 check_auth: 2965 if (!conn) 2966 goto unlock; 2967 2968 if (!hci_outgoing_auth_needed(hdev, conn)) 2969 goto unlock; 2970 2971 if (!test_and_set_bit(HCI_CONN_AUTH_PEND, &conn->flags)) { 2972 struct hci_cp_auth_requested cp; 2973 2974 set_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags); 2975 2976 cp.handle = __cpu_to_le16(conn->handle); 2977 hci_send_cmd(hdev, HCI_OP_AUTH_REQUESTED, sizeof(cp), &cp); 2978 } 2979 2980 unlock: 2981 hci_dev_unlock(hdev); 2982 } 2983 2984 static void read_enc_key_size_complete(struct hci_dev *hdev, u8 status, 2985 u16 opcode, struct sk_buff *skb) 2986 { 2987 const struct hci_rp_read_enc_key_size *rp; 2988 struct hci_conn *conn; 2989 u16 handle; 2990 2991 BT_DBG("%s status 0x%02x", hdev->name, status); 2992 2993 if (!skb || skb->len < sizeof(*rp)) { 2994 bt_dev_err(hdev, "invalid read key size response"); 2995 return; 2996 } 2997 2998 rp = (void *)skb->data; 2999 handle = le16_to_cpu(rp->handle); 3000 3001 hci_dev_lock(hdev); 3002 3003 conn = hci_conn_hash_lookup_handle(hdev, handle); 3004 if (!conn) 3005 goto unlock; 3006 3007 /* While unexpected, the read_enc_key_size command may fail. The most 3008 * secure approach is to then assume the key size is 0 to force a 3009 * disconnection. 3010 */ 3011 if (rp->status) { 3012 bt_dev_err(hdev, "failed to read key size for handle %u", 3013 handle); 3014 conn->enc_key_size = 0; 3015 } else { 3016 conn->enc_key_size = rp->key_size; 3017 } 3018 3019 hci_encrypt_cfm(conn, 0); 3020 3021 unlock: 3022 hci_dev_unlock(hdev); 3023 } 3024 3025 static void hci_encrypt_change_evt(struct hci_dev *hdev, struct sk_buff *skb) 3026 { 3027 struct hci_ev_encrypt_change *ev = (void *) skb->data; 3028 struct hci_conn *conn; 3029 3030 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 3031 3032 hci_dev_lock(hdev); 3033 3034 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3035 if (!conn) 3036 goto unlock; 3037 3038 if (!ev->status) { 3039 if (ev->encrypt) { 3040 /* Encryption implies authentication */ 3041 set_bit(HCI_CONN_AUTH, &conn->flags); 3042 set_bit(HCI_CONN_ENCRYPT, &conn->flags); 3043 conn->sec_level = conn->pending_sec_level; 3044 3045 /* P-256 authentication key implies FIPS */ 3046 if (conn->key_type == HCI_LK_AUTH_COMBINATION_P256) 3047 set_bit(HCI_CONN_FIPS, &conn->flags); 3048 3049 if ((conn->type == ACL_LINK && ev->encrypt == 0x02) || 3050 conn->type == LE_LINK) 3051 set_bit(HCI_CONN_AES_CCM, &conn->flags); 3052 } else { 3053 clear_bit(HCI_CONN_ENCRYPT, &conn->flags); 3054 clear_bit(HCI_CONN_AES_CCM, &conn->flags); 3055 } 3056 } 3057 3058 /* We should disregard the current RPA and generate a new one 3059 * whenever the encryption procedure fails. 3060 */ 3061 if (ev->status && conn->type == LE_LINK) { 3062 hci_dev_set_flag(hdev, HCI_RPA_EXPIRED); 3063 hci_adv_instances_set_rpa_expired(hdev, true); 3064 } 3065 3066 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 3067 3068 if (ev->status && conn->state == BT_CONNECTED) { 3069 if (ev->status == HCI_ERROR_PIN_OR_KEY_MISSING) 3070 set_bit(HCI_CONN_AUTH_FAILURE, &conn->flags); 3071 3072 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 3073 hci_conn_drop(conn); 3074 goto unlock; 3075 } 3076 3077 /* In Secure Connections Only mode, do not allow any connections 3078 * that are not encrypted with AES-CCM using a P-256 authenticated 3079 * combination key. 3080 */ 3081 if (hci_dev_test_flag(hdev, HCI_SC_ONLY) && 3082 (!test_bit(HCI_CONN_AES_CCM, &conn->flags) || 3083 conn->key_type != HCI_LK_AUTH_COMBINATION_P256)) { 3084 hci_connect_cfm(conn, HCI_ERROR_AUTH_FAILURE); 3085 hci_conn_drop(conn); 3086 goto unlock; 3087 } 3088 3089 /* Try reading the encryption key size for encrypted ACL links */ 3090 if (!ev->status && ev->encrypt && conn->type == ACL_LINK) { 3091 struct hci_cp_read_enc_key_size cp; 3092 struct hci_request req; 3093 3094 /* Only send HCI_Read_Encryption_Key_Size if the 3095 * controller really supports it. If it doesn't, assume 3096 * the default size (16). 3097 */ 3098 if (!(hdev->commands[20] & 0x10)) { 3099 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3100 goto notify; 3101 } 3102 3103 hci_req_init(&req, hdev); 3104 3105 cp.handle = cpu_to_le16(conn->handle); 3106 hci_req_add(&req, HCI_OP_READ_ENC_KEY_SIZE, sizeof(cp), &cp); 3107 3108 if (hci_req_run_skb(&req, read_enc_key_size_complete)) { 3109 bt_dev_err(hdev, "sending read key size failed"); 3110 conn->enc_key_size = HCI_LINK_KEY_SIZE; 3111 goto notify; 3112 } 3113 3114 goto unlock; 3115 } 3116 3117 /* Set the default Authenticated Payload Timeout after 3118 * an LE Link is established. As per Core Spec v5.0, Vol 2, Part B 3119 * Section 3.3, the HCI command WRITE_AUTH_PAYLOAD_TIMEOUT should be 3120 * sent when the link is active and Encryption is enabled, the conn 3121 * type can be either LE or ACL and controller must support LMP Ping. 3122 * Ensure for AES-CCM encryption as well. 3123 */ 3124 if (test_bit(HCI_CONN_ENCRYPT, &conn->flags) && 3125 test_bit(HCI_CONN_AES_CCM, &conn->flags) && 3126 ((conn->type == ACL_LINK && lmp_ping_capable(hdev)) || 3127 (conn->type == LE_LINK && (hdev->le_features[0] & HCI_LE_PING)))) { 3128 struct hci_cp_write_auth_payload_to cp; 3129 3130 cp.handle = cpu_to_le16(conn->handle); 3131 cp.timeout = cpu_to_le16(hdev->auth_payload_timeout); 3132 hci_send_cmd(conn->hdev, HCI_OP_WRITE_AUTH_PAYLOAD_TO, 3133 sizeof(cp), &cp); 3134 } 3135 3136 notify: 3137 hci_encrypt_cfm(conn, ev->status); 3138 3139 unlock: 3140 hci_dev_unlock(hdev); 3141 } 3142 3143 static void hci_change_link_key_complete_evt(struct hci_dev *hdev, 3144 struct sk_buff *skb) 3145 { 3146 struct hci_ev_change_link_key_complete *ev = (void *) skb->data; 3147 struct hci_conn *conn; 3148 3149 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 3150 3151 hci_dev_lock(hdev); 3152 3153 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3154 if (conn) { 3155 if (!ev->status) 3156 set_bit(HCI_CONN_SECURE, &conn->flags); 3157 3158 clear_bit(HCI_CONN_AUTH_PEND, &conn->flags); 3159 3160 hci_key_change_cfm(conn, ev->status); 3161 } 3162 3163 hci_dev_unlock(hdev); 3164 } 3165 3166 static void hci_remote_features_evt(struct hci_dev *hdev, 3167 struct sk_buff *skb) 3168 { 3169 struct hci_ev_remote_features *ev = (void *) skb->data; 3170 struct hci_conn *conn; 3171 3172 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 3173 3174 hci_dev_lock(hdev); 3175 3176 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3177 if (!conn) 3178 goto unlock; 3179 3180 if (!ev->status) 3181 memcpy(conn->features[0], ev->features, 8); 3182 3183 if (conn->state != BT_CONFIG) 3184 goto unlock; 3185 3186 if (!ev->status && lmp_ext_feat_capable(hdev) && 3187 lmp_ext_feat_capable(conn)) { 3188 struct hci_cp_read_remote_ext_features cp; 3189 cp.handle = ev->handle; 3190 cp.page = 0x01; 3191 hci_send_cmd(hdev, HCI_OP_READ_REMOTE_EXT_FEATURES, 3192 sizeof(cp), &cp); 3193 goto unlock; 3194 } 3195 3196 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 3197 struct hci_cp_remote_name_req cp; 3198 memset(&cp, 0, sizeof(cp)); 3199 bacpy(&cp.bdaddr, &conn->dst); 3200 cp.pscan_rep_mode = 0x02; 3201 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 3202 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 3203 mgmt_device_connected(hdev, conn, 0, NULL, 0); 3204 3205 if (!hci_outgoing_auth_needed(hdev, conn)) { 3206 conn->state = BT_CONNECTED; 3207 hci_connect_cfm(conn, ev->status); 3208 hci_conn_drop(conn); 3209 } 3210 3211 unlock: 3212 hci_dev_unlock(hdev); 3213 } 3214 3215 static void hci_cmd_complete_evt(struct hci_dev *hdev, struct sk_buff *skb, 3216 u16 *opcode, u8 *status, 3217 hci_req_complete_t *req_complete, 3218 hci_req_complete_skb_t *req_complete_skb) 3219 { 3220 struct hci_ev_cmd_complete *ev = (void *) skb->data; 3221 3222 *opcode = __le16_to_cpu(ev->opcode); 3223 *status = skb->data[sizeof(*ev)]; 3224 3225 skb_pull(skb, sizeof(*ev)); 3226 3227 switch (*opcode) { 3228 case HCI_OP_INQUIRY_CANCEL: 3229 hci_cc_inquiry_cancel(hdev, skb, status); 3230 break; 3231 3232 case HCI_OP_PERIODIC_INQ: 3233 hci_cc_periodic_inq(hdev, skb); 3234 break; 3235 3236 case HCI_OP_EXIT_PERIODIC_INQ: 3237 hci_cc_exit_periodic_inq(hdev, skb); 3238 break; 3239 3240 case HCI_OP_REMOTE_NAME_REQ_CANCEL: 3241 hci_cc_remote_name_req_cancel(hdev, skb); 3242 break; 3243 3244 case HCI_OP_ROLE_DISCOVERY: 3245 hci_cc_role_discovery(hdev, skb); 3246 break; 3247 3248 case HCI_OP_READ_LINK_POLICY: 3249 hci_cc_read_link_policy(hdev, skb); 3250 break; 3251 3252 case HCI_OP_WRITE_LINK_POLICY: 3253 hci_cc_write_link_policy(hdev, skb); 3254 break; 3255 3256 case HCI_OP_READ_DEF_LINK_POLICY: 3257 hci_cc_read_def_link_policy(hdev, skb); 3258 break; 3259 3260 case HCI_OP_WRITE_DEF_LINK_POLICY: 3261 hci_cc_write_def_link_policy(hdev, skb); 3262 break; 3263 3264 case HCI_OP_RESET: 3265 hci_cc_reset(hdev, skb); 3266 break; 3267 3268 case HCI_OP_READ_STORED_LINK_KEY: 3269 hci_cc_read_stored_link_key(hdev, skb); 3270 break; 3271 3272 case HCI_OP_DELETE_STORED_LINK_KEY: 3273 hci_cc_delete_stored_link_key(hdev, skb); 3274 break; 3275 3276 case HCI_OP_WRITE_LOCAL_NAME: 3277 hci_cc_write_local_name(hdev, skb); 3278 break; 3279 3280 case HCI_OP_READ_LOCAL_NAME: 3281 hci_cc_read_local_name(hdev, skb); 3282 break; 3283 3284 case HCI_OP_WRITE_AUTH_ENABLE: 3285 hci_cc_write_auth_enable(hdev, skb); 3286 break; 3287 3288 case HCI_OP_WRITE_ENCRYPT_MODE: 3289 hci_cc_write_encrypt_mode(hdev, skb); 3290 break; 3291 3292 case HCI_OP_WRITE_SCAN_ENABLE: 3293 hci_cc_write_scan_enable(hdev, skb); 3294 break; 3295 3296 case HCI_OP_READ_CLASS_OF_DEV: 3297 hci_cc_read_class_of_dev(hdev, skb); 3298 break; 3299 3300 case HCI_OP_WRITE_CLASS_OF_DEV: 3301 hci_cc_write_class_of_dev(hdev, skb); 3302 break; 3303 3304 case HCI_OP_READ_VOICE_SETTING: 3305 hci_cc_read_voice_setting(hdev, skb); 3306 break; 3307 3308 case HCI_OP_WRITE_VOICE_SETTING: 3309 hci_cc_write_voice_setting(hdev, skb); 3310 break; 3311 3312 case HCI_OP_READ_NUM_SUPPORTED_IAC: 3313 hci_cc_read_num_supported_iac(hdev, skb); 3314 break; 3315 3316 case HCI_OP_WRITE_SSP_MODE: 3317 hci_cc_write_ssp_mode(hdev, skb); 3318 break; 3319 3320 case HCI_OP_WRITE_SC_SUPPORT: 3321 hci_cc_write_sc_support(hdev, skb); 3322 break; 3323 3324 case HCI_OP_READ_AUTH_PAYLOAD_TO: 3325 hci_cc_read_auth_payload_timeout(hdev, skb); 3326 break; 3327 3328 case HCI_OP_WRITE_AUTH_PAYLOAD_TO: 3329 hci_cc_write_auth_payload_timeout(hdev, skb); 3330 break; 3331 3332 case HCI_OP_READ_LOCAL_VERSION: 3333 hci_cc_read_local_version(hdev, skb); 3334 break; 3335 3336 case HCI_OP_READ_LOCAL_COMMANDS: 3337 hci_cc_read_local_commands(hdev, skb); 3338 break; 3339 3340 case HCI_OP_READ_LOCAL_FEATURES: 3341 hci_cc_read_local_features(hdev, skb); 3342 break; 3343 3344 case HCI_OP_READ_LOCAL_EXT_FEATURES: 3345 hci_cc_read_local_ext_features(hdev, skb); 3346 break; 3347 3348 case HCI_OP_READ_BUFFER_SIZE: 3349 hci_cc_read_buffer_size(hdev, skb); 3350 break; 3351 3352 case HCI_OP_READ_BD_ADDR: 3353 hci_cc_read_bd_addr(hdev, skb); 3354 break; 3355 3356 case HCI_OP_READ_LOCAL_PAIRING_OPTS: 3357 hci_cc_read_local_pairing_opts(hdev, skb); 3358 break; 3359 3360 case HCI_OP_READ_PAGE_SCAN_ACTIVITY: 3361 hci_cc_read_page_scan_activity(hdev, skb); 3362 break; 3363 3364 case HCI_OP_WRITE_PAGE_SCAN_ACTIVITY: 3365 hci_cc_write_page_scan_activity(hdev, skb); 3366 break; 3367 3368 case HCI_OP_READ_PAGE_SCAN_TYPE: 3369 hci_cc_read_page_scan_type(hdev, skb); 3370 break; 3371 3372 case HCI_OP_WRITE_PAGE_SCAN_TYPE: 3373 hci_cc_write_page_scan_type(hdev, skb); 3374 break; 3375 3376 case HCI_OP_READ_DATA_BLOCK_SIZE: 3377 hci_cc_read_data_block_size(hdev, skb); 3378 break; 3379 3380 case HCI_OP_READ_FLOW_CONTROL_MODE: 3381 hci_cc_read_flow_control_mode(hdev, skb); 3382 break; 3383 3384 case HCI_OP_READ_LOCAL_AMP_INFO: 3385 hci_cc_read_local_amp_info(hdev, skb); 3386 break; 3387 3388 case HCI_OP_READ_CLOCK: 3389 hci_cc_read_clock(hdev, skb); 3390 break; 3391 3392 case HCI_OP_READ_INQ_RSP_TX_POWER: 3393 hci_cc_read_inq_rsp_tx_power(hdev, skb); 3394 break; 3395 3396 case HCI_OP_READ_DEF_ERR_DATA_REPORTING: 3397 hci_cc_read_def_err_data_reporting(hdev, skb); 3398 break; 3399 3400 case HCI_OP_WRITE_DEF_ERR_DATA_REPORTING: 3401 hci_cc_write_def_err_data_reporting(hdev, skb); 3402 break; 3403 3404 case HCI_OP_PIN_CODE_REPLY: 3405 hci_cc_pin_code_reply(hdev, skb); 3406 break; 3407 3408 case HCI_OP_PIN_CODE_NEG_REPLY: 3409 hci_cc_pin_code_neg_reply(hdev, skb); 3410 break; 3411 3412 case HCI_OP_READ_LOCAL_OOB_DATA: 3413 hci_cc_read_local_oob_data(hdev, skb); 3414 break; 3415 3416 case HCI_OP_READ_LOCAL_OOB_EXT_DATA: 3417 hci_cc_read_local_oob_ext_data(hdev, skb); 3418 break; 3419 3420 case HCI_OP_LE_READ_BUFFER_SIZE: 3421 hci_cc_le_read_buffer_size(hdev, skb); 3422 break; 3423 3424 case HCI_OP_LE_READ_LOCAL_FEATURES: 3425 hci_cc_le_read_local_features(hdev, skb); 3426 break; 3427 3428 case HCI_OP_LE_READ_ADV_TX_POWER: 3429 hci_cc_le_read_adv_tx_power(hdev, skb); 3430 break; 3431 3432 case HCI_OP_USER_CONFIRM_REPLY: 3433 hci_cc_user_confirm_reply(hdev, skb); 3434 break; 3435 3436 case HCI_OP_USER_CONFIRM_NEG_REPLY: 3437 hci_cc_user_confirm_neg_reply(hdev, skb); 3438 break; 3439 3440 case HCI_OP_USER_PASSKEY_REPLY: 3441 hci_cc_user_passkey_reply(hdev, skb); 3442 break; 3443 3444 case HCI_OP_USER_PASSKEY_NEG_REPLY: 3445 hci_cc_user_passkey_neg_reply(hdev, skb); 3446 break; 3447 3448 case HCI_OP_LE_SET_RANDOM_ADDR: 3449 hci_cc_le_set_random_addr(hdev, skb); 3450 break; 3451 3452 case HCI_OP_LE_SET_ADV_ENABLE: 3453 hci_cc_le_set_adv_enable(hdev, skb); 3454 break; 3455 3456 case HCI_OP_LE_SET_SCAN_PARAM: 3457 hci_cc_le_set_scan_param(hdev, skb); 3458 break; 3459 3460 case HCI_OP_LE_SET_SCAN_ENABLE: 3461 hci_cc_le_set_scan_enable(hdev, skb); 3462 break; 3463 3464 case HCI_OP_LE_READ_WHITE_LIST_SIZE: 3465 hci_cc_le_read_white_list_size(hdev, skb); 3466 break; 3467 3468 case HCI_OP_LE_CLEAR_WHITE_LIST: 3469 hci_cc_le_clear_white_list(hdev, skb); 3470 break; 3471 3472 case HCI_OP_LE_ADD_TO_WHITE_LIST: 3473 hci_cc_le_add_to_white_list(hdev, skb); 3474 break; 3475 3476 case HCI_OP_LE_DEL_FROM_WHITE_LIST: 3477 hci_cc_le_del_from_white_list(hdev, skb); 3478 break; 3479 3480 case HCI_OP_LE_READ_SUPPORTED_STATES: 3481 hci_cc_le_read_supported_states(hdev, skb); 3482 break; 3483 3484 case HCI_OP_LE_READ_DEF_DATA_LEN: 3485 hci_cc_le_read_def_data_len(hdev, skb); 3486 break; 3487 3488 case HCI_OP_LE_WRITE_DEF_DATA_LEN: 3489 hci_cc_le_write_def_data_len(hdev, skb); 3490 break; 3491 3492 case HCI_OP_LE_ADD_TO_RESOLV_LIST: 3493 hci_cc_le_add_to_resolv_list(hdev, skb); 3494 break; 3495 3496 case HCI_OP_LE_DEL_FROM_RESOLV_LIST: 3497 hci_cc_le_del_from_resolv_list(hdev, skb); 3498 break; 3499 3500 case HCI_OP_LE_CLEAR_RESOLV_LIST: 3501 hci_cc_le_clear_resolv_list(hdev, skb); 3502 break; 3503 3504 case HCI_OP_LE_READ_RESOLV_LIST_SIZE: 3505 hci_cc_le_read_resolv_list_size(hdev, skb); 3506 break; 3507 3508 case HCI_OP_LE_SET_ADDR_RESOLV_ENABLE: 3509 hci_cc_le_set_addr_resolution_enable(hdev, skb); 3510 break; 3511 3512 case HCI_OP_LE_READ_MAX_DATA_LEN: 3513 hci_cc_le_read_max_data_len(hdev, skb); 3514 break; 3515 3516 case HCI_OP_WRITE_LE_HOST_SUPPORTED: 3517 hci_cc_write_le_host_supported(hdev, skb); 3518 break; 3519 3520 case HCI_OP_LE_SET_ADV_PARAM: 3521 hci_cc_set_adv_param(hdev, skb); 3522 break; 3523 3524 case HCI_OP_READ_RSSI: 3525 hci_cc_read_rssi(hdev, skb); 3526 break; 3527 3528 case HCI_OP_READ_TX_POWER: 3529 hci_cc_read_tx_power(hdev, skb); 3530 break; 3531 3532 case HCI_OP_WRITE_SSP_DEBUG_MODE: 3533 hci_cc_write_ssp_debug_mode(hdev, skb); 3534 break; 3535 3536 case HCI_OP_LE_SET_EXT_SCAN_PARAMS: 3537 hci_cc_le_set_ext_scan_param(hdev, skb); 3538 break; 3539 3540 case HCI_OP_LE_SET_EXT_SCAN_ENABLE: 3541 hci_cc_le_set_ext_scan_enable(hdev, skb); 3542 break; 3543 3544 case HCI_OP_LE_SET_DEFAULT_PHY: 3545 hci_cc_le_set_default_phy(hdev, skb); 3546 break; 3547 3548 case HCI_OP_LE_READ_NUM_SUPPORTED_ADV_SETS: 3549 hci_cc_le_read_num_adv_sets(hdev, skb); 3550 break; 3551 3552 case HCI_OP_LE_SET_EXT_ADV_PARAMS: 3553 hci_cc_set_ext_adv_param(hdev, skb); 3554 break; 3555 3556 case HCI_OP_LE_SET_EXT_ADV_ENABLE: 3557 hci_cc_le_set_ext_adv_enable(hdev, skb); 3558 break; 3559 3560 case HCI_OP_LE_SET_ADV_SET_RAND_ADDR: 3561 hci_cc_le_set_adv_set_random_addr(hdev, skb); 3562 break; 3563 3564 default: 3565 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode); 3566 break; 3567 } 3568 3569 if (*opcode != HCI_OP_NOP) 3570 cancel_delayed_work(&hdev->cmd_timer); 3571 3572 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) 3573 atomic_set(&hdev->cmd_cnt, 1); 3574 3575 hci_req_cmd_complete(hdev, *opcode, *status, req_complete, 3576 req_complete_skb); 3577 3578 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 3579 bt_dev_err(hdev, 3580 "unexpected event for opcode 0x%4.4x", *opcode); 3581 return; 3582 } 3583 3584 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 3585 queue_work(hdev->workqueue, &hdev->cmd_work); 3586 } 3587 3588 static void hci_cmd_status_evt(struct hci_dev *hdev, struct sk_buff *skb, 3589 u16 *opcode, u8 *status, 3590 hci_req_complete_t *req_complete, 3591 hci_req_complete_skb_t *req_complete_skb) 3592 { 3593 struct hci_ev_cmd_status *ev = (void *) skb->data; 3594 3595 skb_pull(skb, sizeof(*ev)); 3596 3597 *opcode = __le16_to_cpu(ev->opcode); 3598 *status = ev->status; 3599 3600 switch (*opcode) { 3601 case HCI_OP_INQUIRY: 3602 hci_cs_inquiry(hdev, ev->status); 3603 break; 3604 3605 case HCI_OP_CREATE_CONN: 3606 hci_cs_create_conn(hdev, ev->status); 3607 break; 3608 3609 case HCI_OP_DISCONNECT: 3610 hci_cs_disconnect(hdev, ev->status); 3611 break; 3612 3613 case HCI_OP_ADD_SCO: 3614 hci_cs_add_sco(hdev, ev->status); 3615 break; 3616 3617 case HCI_OP_AUTH_REQUESTED: 3618 hci_cs_auth_requested(hdev, ev->status); 3619 break; 3620 3621 case HCI_OP_SET_CONN_ENCRYPT: 3622 hci_cs_set_conn_encrypt(hdev, ev->status); 3623 break; 3624 3625 case HCI_OP_REMOTE_NAME_REQ: 3626 hci_cs_remote_name_req(hdev, ev->status); 3627 break; 3628 3629 case HCI_OP_READ_REMOTE_FEATURES: 3630 hci_cs_read_remote_features(hdev, ev->status); 3631 break; 3632 3633 case HCI_OP_READ_REMOTE_EXT_FEATURES: 3634 hci_cs_read_remote_ext_features(hdev, ev->status); 3635 break; 3636 3637 case HCI_OP_SETUP_SYNC_CONN: 3638 hci_cs_setup_sync_conn(hdev, ev->status); 3639 break; 3640 3641 case HCI_OP_SNIFF_MODE: 3642 hci_cs_sniff_mode(hdev, ev->status); 3643 break; 3644 3645 case HCI_OP_EXIT_SNIFF_MODE: 3646 hci_cs_exit_sniff_mode(hdev, ev->status); 3647 break; 3648 3649 case HCI_OP_SWITCH_ROLE: 3650 hci_cs_switch_role(hdev, ev->status); 3651 break; 3652 3653 case HCI_OP_LE_CREATE_CONN: 3654 hci_cs_le_create_conn(hdev, ev->status); 3655 break; 3656 3657 case HCI_OP_LE_READ_REMOTE_FEATURES: 3658 hci_cs_le_read_remote_features(hdev, ev->status); 3659 break; 3660 3661 case HCI_OP_LE_START_ENC: 3662 hci_cs_le_start_enc(hdev, ev->status); 3663 break; 3664 3665 case HCI_OP_LE_EXT_CREATE_CONN: 3666 hci_cs_le_ext_create_conn(hdev, ev->status); 3667 break; 3668 3669 default: 3670 BT_DBG("%s opcode 0x%4.4x", hdev->name, *opcode); 3671 break; 3672 } 3673 3674 if (*opcode != HCI_OP_NOP) 3675 cancel_delayed_work(&hdev->cmd_timer); 3676 3677 if (ev->ncmd && !test_bit(HCI_RESET, &hdev->flags)) 3678 atomic_set(&hdev->cmd_cnt, 1); 3679 3680 /* Indicate request completion if the command failed. Also, if 3681 * we're not waiting for a special event and we get a success 3682 * command status we should try to flag the request as completed 3683 * (since for this kind of commands there will not be a command 3684 * complete event). 3685 */ 3686 if (ev->status || 3687 (hdev->sent_cmd && !bt_cb(hdev->sent_cmd)->hci.req_event)) 3688 hci_req_cmd_complete(hdev, *opcode, ev->status, req_complete, 3689 req_complete_skb); 3690 3691 if (hci_dev_test_flag(hdev, HCI_CMD_PENDING)) { 3692 bt_dev_err(hdev, 3693 "unexpected event for opcode 0x%4.4x", *opcode); 3694 return; 3695 } 3696 3697 if (atomic_read(&hdev->cmd_cnt) && !skb_queue_empty(&hdev->cmd_q)) 3698 queue_work(hdev->workqueue, &hdev->cmd_work); 3699 } 3700 3701 static void hci_hardware_error_evt(struct hci_dev *hdev, struct sk_buff *skb) 3702 { 3703 struct hci_ev_hardware_error *ev = (void *) skb->data; 3704 3705 hdev->hw_error_code = ev->code; 3706 3707 queue_work(hdev->req_workqueue, &hdev->error_reset); 3708 } 3709 3710 static void hci_role_change_evt(struct hci_dev *hdev, struct sk_buff *skb) 3711 { 3712 struct hci_ev_role_change *ev = (void *) skb->data; 3713 struct hci_conn *conn; 3714 3715 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 3716 3717 hci_dev_lock(hdev); 3718 3719 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3720 if (conn) { 3721 if (!ev->status) 3722 conn->role = ev->role; 3723 3724 clear_bit(HCI_CONN_RSWITCH_PEND, &conn->flags); 3725 3726 hci_role_switch_cfm(conn, ev->status, ev->role); 3727 } 3728 3729 hci_dev_unlock(hdev); 3730 } 3731 3732 static void hci_num_comp_pkts_evt(struct hci_dev *hdev, struct sk_buff *skb) 3733 { 3734 struct hci_ev_num_comp_pkts *ev = (void *) skb->data; 3735 int i; 3736 3737 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_PACKET_BASED) { 3738 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode); 3739 return; 3740 } 3741 3742 if (skb->len < sizeof(*ev) || 3743 skb->len < struct_size(ev, handles, ev->num_hndl)) { 3744 BT_DBG("%s bad parameters", hdev->name); 3745 return; 3746 } 3747 3748 BT_DBG("%s num_hndl %d", hdev->name, ev->num_hndl); 3749 3750 for (i = 0; i < ev->num_hndl; i++) { 3751 struct hci_comp_pkts_info *info = &ev->handles[i]; 3752 struct hci_conn *conn; 3753 __u16 handle, count; 3754 3755 handle = __le16_to_cpu(info->handle); 3756 count = __le16_to_cpu(info->count); 3757 3758 conn = hci_conn_hash_lookup_handle(hdev, handle); 3759 if (!conn) 3760 continue; 3761 3762 conn->sent -= count; 3763 3764 switch (conn->type) { 3765 case ACL_LINK: 3766 hdev->acl_cnt += count; 3767 if (hdev->acl_cnt > hdev->acl_pkts) 3768 hdev->acl_cnt = hdev->acl_pkts; 3769 break; 3770 3771 case LE_LINK: 3772 if (hdev->le_pkts) { 3773 hdev->le_cnt += count; 3774 if (hdev->le_cnt > hdev->le_pkts) 3775 hdev->le_cnt = hdev->le_pkts; 3776 } else { 3777 hdev->acl_cnt += count; 3778 if (hdev->acl_cnt > hdev->acl_pkts) 3779 hdev->acl_cnt = hdev->acl_pkts; 3780 } 3781 break; 3782 3783 case SCO_LINK: 3784 hdev->sco_cnt += count; 3785 if (hdev->sco_cnt > hdev->sco_pkts) 3786 hdev->sco_cnt = hdev->sco_pkts; 3787 break; 3788 3789 default: 3790 bt_dev_err(hdev, "unknown type %d conn %p", 3791 conn->type, conn); 3792 break; 3793 } 3794 } 3795 3796 queue_work(hdev->workqueue, &hdev->tx_work); 3797 } 3798 3799 static struct hci_conn *__hci_conn_lookup_handle(struct hci_dev *hdev, 3800 __u16 handle) 3801 { 3802 struct hci_chan *chan; 3803 3804 switch (hdev->dev_type) { 3805 case HCI_PRIMARY: 3806 return hci_conn_hash_lookup_handle(hdev, handle); 3807 case HCI_AMP: 3808 chan = hci_chan_lookup_handle(hdev, handle); 3809 if (chan) 3810 return chan->conn; 3811 break; 3812 default: 3813 bt_dev_err(hdev, "unknown dev_type %d", hdev->dev_type); 3814 break; 3815 } 3816 3817 return NULL; 3818 } 3819 3820 static void hci_num_comp_blocks_evt(struct hci_dev *hdev, struct sk_buff *skb) 3821 { 3822 struct hci_ev_num_comp_blocks *ev = (void *) skb->data; 3823 int i; 3824 3825 if (hdev->flow_ctl_mode != HCI_FLOW_CTL_MODE_BLOCK_BASED) { 3826 bt_dev_err(hdev, "wrong event for mode %d", hdev->flow_ctl_mode); 3827 return; 3828 } 3829 3830 if (skb->len < sizeof(*ev) || 3831 skb->len < struct_size(ev, handles, ev->num_hndl)) { 3832 BT_DBG("%s bad parameters", hdev->name); 3833 return; 3834 } 3835 3836 BT_DBG("%s num_blocks %d num_hndl %d", hdev->name, ev->num_blocks, 3837 ev->num_hndl); 3838 3839 for (i = 0; i < ev->num_hndl; i++) { 3840 struct hci_comp_blocks_info *info = &ev->handles[i]; 3841 struct hci_conn *conn = NULL; 3842 __u16 handle, block_count; 3843 3844 handle = __le16_to_cpu(info->handle); 3845 block_count = __le16_to_cpu(info->blocks); 3846 3847 conn = __hci_conn_lookup_handle(hdev, handle); 3848 if (!conn) 3849 continue; 3850 3851 conn->sent -= block_count; 3852 3853 switch (conn->type) { 3854 case ACL_LINK: 3855 case AMP_LINK: 3856 hdev->block_cnt += block_count; 3857 if (hdev->block_cnt > hdev->num_blocks) 3858 hdev->block_cnt = hdev->num_blocks; 3859 break; 3860 3861 default: 3862 bt_dev_err(hdev, "unknown type %d conn %p", 3863 conn->type, conn); 3864 break; 3865 } 3866 } 3867 3868 queue_work(hdev->workqueue, &hdev->tx_work); 3869 } 3870 3871 static void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb) 3872 { 3873 struct hci_ev_mode_change *ev = (void *) skb->data; 3874 struct hci_conn *conn; 3875 3876 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 3877 3878 hci_dev_lock(hdev); 3879 3880 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 3881 if (conn) { 3882 conn->mode = ev->mode; 3883 3884 if (!test_and_clear_bit(HCI_CONN_MODE_CHANGE_PEND, 3885 &conn->flags)) { 3886 if (conn->mode == HCI_CM_ACTIVE) 3887 set_bit(HCI_CONN_POWER_SAVE, &conn->flags); 3888 else 3889 clear_bit(HCI_CONN_POWER_SAVE, &conn->flags); 3890 } 3891 3892 if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->flags)) 3893 hci_sco_setup(conn, ev->status); 3894 } 3895 3896 hci_dev_unlock(hdev); 3897 } 3898 3899 static void hci_pin_code_request_evt(struct hci_dev *hdev, struct sk_buff *skb) 3900 { 3901 struct hci_ev_pin_code_req *ev = (void *) skb->data; 3902 struct hci_conn *conn; 3903 3904 BT_DBG("%s", hdev->name); 3905 3906 hci_dev_lock(hdev); 3907 3908 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3909 if (!conn) 3910 goto unlock; 3911 3912 if (conn->state == BT_CONNECTED) { 3913 hci_conn_hold(conn); 3914 conn->disc_timeout = HCI_PAIRING_TIMEOUT; 3915 hci_conn_drop(conn); 3916 } 3917 3918 if (!hci_dev_test_flag(hdev, HCI_BONDABLE) && 3919 !test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags)) { 3920 hci_send_cmd(hdev, HCI_OP_PIN_CODE_NEG_REPLY, 3921 sizeof(ev->bdaddr), &ev->bdaddr); 3922 } else if (hci_dev_test_flag(hdev, HCI_MGMT)) { 3923 u8 secure; 3924 3925 if (conn->pending_sec_level == BT_SECURITY_HIGH) 3926 secure = 1; 3927 else 3928 secure = 0; 3929 3930 mgmt_pin_code_request(hdev, &ev->bdaddr, secure); 3931 } 3932 3933 unlock: 3934 hci_dev_unlock(hdev); 3935 } 3936 3937 static void conn_set_key(struct hci_conn *conn, u8 key_type, u8 pin_len) 3938 { 3939 if (key_type == HCI_LK_CHANGED_COMBINATION) 3940 return; 3941 3942 conn->pin_length = pin_len; 3943 conn->key_type = key_type; 3944 3945 switch (key_type) { 3946 case HCI_LK_LOCAL_UNIT: 3947 case HCI_LK_REMOTE_UNIT: 3948 case HCI_LK_DEBUG_COMBINATION: 3949 return; 3950 case HCI_LK_COMBINATION: 3951 if (pin_len == 16) 3952 conn->pending_sec_level = BT_SECURITY_HIGH; 3953 else 3954 conn->pending_sec_level = BT_SECURITY_MEDIUM; 3955 break; 3956 case HCI_LK_UNAUTH_COMBINATION_P192: 3957 case HCI_LK_UNAUTH_COMBINATION_P256: 3958 conn->pending_sec_level = BT_SECURITY_MEDIUM; 3959 break; 3960 case HCI_LK_AUTH_COMBINATION_P192: 3961 conn->pending_sec_level = BT_SECURITY_HIGH; 3962 break; 3963 case HCI_LK_AUTH_COMBINATION_P256: 3964 conn->pending_sec_level = BT_SECURITY_FIPS; 3965 break; 3966 } 3967 } 3968 3969 static void hci_link_key_request_evt(struct hci_dev *hdev, struct sk_buff *skb) 3970 { 3971 struct hci_ev_link_key_req *ev = (void *) skb->data; 3972 struct hci_cp_link_key_reply cp; 3973 struct hci_conn *conn; 3974 struct link_key *key; 3975 3976 BT_DBG("%s", hdev->name); 3977 3978 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 3979 return; 3980 3981 hci_dev_lock(hdev); 3982 3983 key = hci_find_link_key(hdev, &ev->bdaddr); 3984 if (!key) { 3985 BT_DBG("%s link key not found for %pMR", hdev->name, 3986 &ev->bdaddr); 3987 goto not_found; 3988 } 3989 3990 BT_DBG("%s found key type %u for %pMR", hdev->name, key->type, 3991 &ev->bdaddr); 3992 3993 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 3994 if (conn) { 3995 clear_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 3996 3997 if ((key->type == HCI_LK_UNAUTH_COMBINATION_P192 || 3998 key->type == HCI_LK_UNAUTH_COMBINATION_P256) && 3999 conn->auth_type != 0xff && (conn->auth_type & 0x01)) { 4000 BT_DBG("%s ignoring unauthenticated key", hdev->name); 4001 goto not_found; 4002 } 4003 4004 if (key->type == HCI_LK_COMBINATION && key->pin_len < 16 && 4005 (conn->pending_sec_level == BT_SECURITY_HIGH || 4006 conn->pending_sec_level == BT_SECURITY_FIPS)) { 4007 BT_DBG("%s ignoring key unauthenticated for high security", 4008 hdev->name); 4009 goto not_found; 4010 } 4011 4012 conn_set_key(conn, key->type, key->pin_len); 4013 } 4014 4015 bacpy(&cp.bdaddr, &ev->bdaddr); 4016 memcpy(cp.link_key, key->val, HCI_LINK_KEY_SIZE); 4017 4018 hci_send_cmd(hdev, HCI_OP_LINK_KEY_REPLY, sizeof(cp), &cp); 4019 4020 hci_dev_unlock(hdev); 4021 4022 return; 4023 4024 not_found: 4025 hci_send_cmd(hdev, HCI_OP_LINK_KEY_NEG_REPLY, 6, &ev->bdaddr); 4026 hci_dev_unlock(hdev); 4027 } 4028 4029 static void hci_link_key_notify_evt(struct hci_dev *hdev, struct sk_buff *skb) 4030 { 4031 struct hci_ev_link_key_notify *ev = (void *) skb->data; 4032 struct hci_conn *conn; 4033 struct link_key *key; 4034 bool persistent; 4035 u8 pin_len = 0; 4036 4037 BT_DBG("%s", hdev->name); 4038 4039 hci_dev_lock(hdev); 4040 4041 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4042 if (!conn) 4043 goto unlock; 4044 4045 hci_conn_hold(conn); 4046 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4047 hci_conn_drop(conn); 4048 4049 set_bit(HCI_CONN_NEW_LINK_KEY, &conn->flags); 4050 conn_set_key(conn, ev->key_type, conn->pin_length); 4051 4052 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4053 goto unlock; 4054 4055 key = hci_add_link_key(hdev, conn, &ev->bdaddr, ev->link_key, 4056 ev->key_type, pin_len, &persistent); 4057 if (!key) 4058 goto unlock; 4059 4060 /* Update connection information since adding the key will have 4061 * fixed up the type in the case of changed combination keys. 4062 */ 4063 if (ev->key_type == HCI_LK_CHANGED_COMBINATION) 4064 conn_set_key(conn, key->type, key->pin_len); 4065 4066 mgmt_new_link_key(hdev, key, persistent); 4067 4068 /* Keep debug keys around only if the HCI_KEEP_DEBUG_KEYS flag 4069 * is set. If it's not set simply remove the key from the kernel 4070 * list (we've still notified user space about it but with 4071 * store_hint being 0). 4072 */ 4073 if (key->type == HCI_LK_DEBUG_COMBINATION && 4074 !hci_dev_test_flag(hdev, HCI_KEEP_DEBUG_KEYS)) { 4075 list_del_rcu(&key->list); 4076 kfree_rcu(key, rcu); 4077 goto unlock; 4078 } 4079 4080 if (persistent) 4081 clear_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4082 else 4083 set_bit(HCI_CONN_FLUSH_KEY, &conn->flags); 4084 4085 unlock: 4086 hci_dev_unlock(hdev); 4087 } 4088 4089 static void hci_clock_offset_evt(struct hci_dev *hdev, struct sk_buff *skb) 4090 { 4091 struct hci_ev_clock_offset *ev = (void *) skb->data; 4092 struct hci_conn *conn; 4093 4094 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 4095 4096 hci_dev_lock(hdev); 4097 4098 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4099 if (conn && !ev->status) { 4100 struct inquiry_entry *ie; 4101 4102 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4103 if (ie) { 4104 ie->data.clock_offset = ev->clock_offset; 4105 ie->timestamp = jiffies; 4106 } 4107 } 4108 4109 hci_dev_unlock(hdev); 4110 } 4111 4112 static void hci_pkt_type_change_evt(struct hci_dev *hdev, struct sk_buff *skb) 4113 { 4114 struct hci_ev_pkt_type_change *ev = (void *) skb->data; 4115 struct hci_conn *conn; 4116 4117 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 4118 4119 hci_dev_lock(hdev); 4120 4121 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4122 if (conn && !ev->status) 4123 conn->pkt_type = __le16_to_cpu(ev->pkt_type); 4124 4125 hci_dev_unlock(hdev); 4126 } 4127 4128 static void hci_pscan_rep_mode_evt(struct hci_dev *hdev, struct sk_buff *skb) 4129 { 4130 struct hci_ev_pscan_rep_mode *ev = (void *) skb->data; 4131 struct inquiry_entry *ie; 4132 4133 BT_DBG("%s", hdev->name); 4134 4135 hci_dev_lock(hdev); 4136 4137 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4138 if (ie) { 4139 ie->data.pscan_rep_mode = ev->pscan_rep_mode; 4140 ie->timestamp = jiffies; 4141 } 4142 4143 hci_dev_unlock(hdev); 4144 } 4145 4146 static void hci_inquiry_result_with_rssi_evt(struct hci_dev *hdev, 4147 struct sk_buff *skb) 4148 { 4149 struct inquiry_data data; 4150 int num_rsp = *((__u8 *) skb->data); 4151 4152 BT_DBG("%s num_rsp %d", hdev->name, num_rsp); 4153 4154 if (!num_rsp) 4155 return; 4156 4157 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4158 return; 4159 4160 hci_dev_lock(hdev); 4161 4162 if ((skb->len - 1) / num_rsp != sizeof(struct inquiry_info_with_rssi)) { 4163 struct inquiry_info_with_rssi_and_pscan_mode *info; 4164 info = (void *) (skb->data + 1); 4165 4166 for (; num_rsp; num_rsp--, info++) { 4167 u32 flags; 4168 4169 bacpy(&data.bdaddr, &info->bdaddr); 4170 data.pscan_rep_mode = info->pscan_rep_mode; 4171 data.pscan_period_mode = info->pscan_period_mode; 4172 data.pscan_mode = info->pscan_mode; 4173 memcpy(data.dev_class, info->dev_class, 3); 4174 data.clock_offset = info->clock_offset; 4175 data.rssi = info->rssi; 4176 data.ssp_mode = 0x00; 4177 4178 flags = hci_inquiry_cache_update(hdev, &data, false); 4179 4180 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4181 info->dev_class, info->rssi, 4182 flags, NULL, 0, NULL, 0); 4183 } 4184 } else { 4185 struct inquiry_info_with_rssi *info = (void *) (skb->data + 1); 4186 4187 for (; num_rsp; num_rsp--, info++) { 4188 u32 flags; 4189 4190 bacpy(&data.bdaddr, &info->bdaddr); 4191 data.pscan_rep_mode = info->pscan_rep_mode; 4192 data.pscan_period_mode = info->pscan_period_mode; 4193 data.pscan_mode = 0x00; 4194 memcpy(data.dev_class, info->dev_class, 3); 4195 data.clock_offset = info->clock_offset; 4196 data.rssi = info->rssi; 4197 data.ssp_mode = 0x00; 4198 4199 flags = hci_inquiry_cache_update(hdev, &data, false); 4200 4201 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4202 info->dev_class, info->rssi, 4203 flags, NULL, 0, NULL, 0); 4204 } 4205 } 4206 4207 hci_dev_unlock(hdev); 4208 } 4209 4210 static void hci_remote_ext_features_evt(struct hci_dev *hdev, 4211 struct sk_buff *skb) 4212 { 4213 struct hci_ev_remote_ext_features *ev = (void *) skb->data; 4214 struct hci_conn *conn; 4215 4216 BT_DBG("%s", hdev->name); 4217 4218 hci_dev_lock(hdev); 4219 4220 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4221 if (!conn) 4222 goto unlock; 4223 4224 if (ev->page < HCI_MAX_PAGES) 4225 memcpy(conn->features[ev->page], ev->features, 8); 4226 4227 if (!ev->status && ev->page == 0x01) { 4228 struct inquiry_entry *ie; 4229 4230 ie = hci_inquiry_cache_lookup(hdev, &conn->dst); 4231 if (ie) 4232 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4233 4234 if (ev->features[0] & LMP_HOST_SSP) { 4235 set_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4236 } else { 4237 /* It is mandatory by the Bluetooth specification that 4238 * Extended Inquiry Results are only used when Secure 4239 * Simple Pairing is enabled, but some devices violate 4240 * this. 4241 * 4242 * To make these devices work, the internal SSP 4243 * enabled flag needs to be cleared if the remote host 4244 * features do not indicate SSP support */ 4245 clear_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 4246 } 4247 4248 if (ev->features[0] & LMP_HOST_SC) 4249 set_bit(HCI_CONN_SC_ENABLED, &conn->flags); 4250 } 4251 4252 if (conn->state != BT_CONFIG) 4253 goto unlock; 4254 4255 if (!ev->status && !test_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) { 4256 struct hci_cp_remote_name_req cp; 4257 memset(&cp, 0, sizeof(cp)); 4258 bacpy(&cp.bdaddr, &conn->dst); 4259 cp.pscan_rep_mode = 0x02; 4260 hci_send_cmd(hdev, HCI_OP_REMOTE_NAME_REQ, sizeof(cp), &cp); 4261 } else if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 4262 mgmt_device_connected(hdev, conn, 0, NULL, 0); 4263 4264 if (!hci_outgoing_auth_needed(hdev, conn)) { 4265 conn->state = BT_CONNECTED; 4266 hci_connect_cfm(conn, ev->status); 4267 hci_conn_drop(conn); 4268 } 4269 4270 unlock: 4271 hci_dev_unlock(hdev); 4272 } 4273 4274 static void hci_sync_conn_complete_evt(struct hci_dev *hdev, 4275 struct sk_buff *skb) 4276 { 4277 struct hci_ev_sync_conn_complete *ev = (void *) skb->data; 4278 struct hci_conn *conn; 4279 4280 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 4281 4282 hci_dev_lock(hdev); 4283 4284 conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr); 4285 if (!conn) { 4286 if (ev->link_type == ESCO_LINK) 4287 goto unlock; 4288 4289 /* When the link type in the event indicates SCO connection 4290 * and lookup of the connection object fails, then check 4291 * if an eSCO connection object exists. 4292 * 4293 * The core limits the synchronous connections to either 4294 * SCO or eSCO. The eSCO connection is preferred and tried 4295 * to be setup first and until successfully established, 4296 * the link type will be hinted as eSCO. 4297 */ 4298 conn = hci_conn_hash_lookup_ba(hdev, ESCO_LINK, &ev->bdaddr); 4299 if (!conn) 4300 goto unlock; 4301 } 4302 4303 switch (ev->status) { 4304 case 0x00: 4305 conn->handle = __le16_to_cpu(ev->handle); 4306 conn->state = BT_CONNECTED; 4307 conn->type = ev->link_type; 4308 4309 hci_debugfs_create_conn(conn); 4310 hci_conn_add_sysfs(conn); 4311 break; 4312 4313 case 0x10: /* Connection Accept Timeout */ 4314 case 0x0d: /* Connection Rejected due to Limited Resources */ 4315 case 0x11: /* Unsupported Feature or Parameter Value */ 4316 case 0x1c: /* SCO interval rejected */ 4317 case 0x1a: /* Unsupported Remote Feature */ 4318 case 0x1e: /* Invalid LMP Parameters */ 4319 case 0x1f: /* Unspecified error */ 4320 case 0x20: /* Unsupported LMP Parameter value */ 4321 if (conn->out) { 4322 conn->pkt_type = (hdev->esco_type & SCO_ESCO_MASK) | 4323 (hdev->esco_type & EDR_ESCO_MASK); 4324 if (hci_setup_sync(conn, conn->link->handle)) 4325 goto unlock; 4326 } 4327 /* fall through */ 4328 4329 default: 4330 conn->state = BT_CLOSED; 4331 break; 4332 } 4333 4334 bt_dev_dbg(hdev, "SCO connected with air mode: %02x", ev->air_mode); 4335 4336 switch (conn->setting & SCO_AIRMODE_MASK) { 4337 case SCO_AIRMODE_CVSD: 4338 if (hdev->notify) 4339 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_CVSD); 4340 break; 4341 case SCO_AIRMODE_TRANSP: 4342 if (hdev->notify) 4343 hdev->notify(hdev, HCI_NOTIFY_ENABLE_SCO_TRANSP); 4344 break; 4345 } 4346 4347 hci_connect_cfm(conn, ev->status); 4348 if (ev->status) 4349 hci_conn_del(conn); 4350 4351 unlock: 4352 hci_dev_unlock(hdev); 4353 } 4354 4355 static inline size_t eir_get_length(u8 *eir, size_t eir_len) 4356 { 4357 size_t parsed = 0; 4358 4359 while (parsed < eir_len) { 4360 u8 field_len = eir[0]; 4361 4362 if (field_len == 0) 4363 return parsed; 4364 4365 parsed += field_len + 1; 4366 eir += field_len + 1; 4367 } 4368 4369 return eir_len; 4370 } 4371 4372 static void hci_extended_inquiry_result_evt(struct hci_dev *hdev, 4373 struct sk_buff *skb) 4374 { 4375 struct inquiry_data data; 4376 struct extended_inquiry_info *info = (void *) (skb->data + 1); 4377 int num_rsp = *((__u8 *) skb->data); 4378 size_t eir_len; 4379 4380 BT_DBG("%s num_rsp %d", hdev->name, num_rsp); 4381 4382 if (!num_rsp) 4383 return; 4384 4385 if (hci_dev_test_flag(hdev, HCI_PERIODIC_INQ)) 4386 return; 4387 4388 hci_dev_lock(hdev); 4389 4390 for (; num_rsp; num_rsp--, info++) { 4391 u32 flags; 4392 bool name_known; 4393 4394 bacpy(&data.bdaddr, &info->bdaddr); 4395 data.pscan_rep_mode = info->pscan_rep_mode; 4396 data.pscan_period_mode = info->pscan_period_mode; 4397 data.pscan_mode = 0x00; 4398 memcpy(data.dev_class, info->dev_class, 3); 4399 data.clock_offset = info->clock_offset; 4400 data.rssi = info->rssi; 4401 data.ssp_mode = 0x01; 4402 4403 if (hci_dev_test_flag(hdev, HCI_MGMT)) 4404 name_known = eir_get_data(info->data, 4405 sizeof(info->data), 4406 EIR_NAME_COMPLETE, NULL); 4407 else 4408 name_known = true; 4409 4410 flags = hci_inquiry_cache_update(hdev, &data, name_known); 4411 4412 eir_len = eir_get_length(info->data, sizeof(info->data)); 4413 4414 mgmt_device_found(hdev, &info->bdaddr, ACL_LINK, 0x00, 4415 info->dev_class, info->rssi, 4416 flags, info->data, eir_len, NULL, 0); 4417 } 4418 4419 hci_dev_unlock(hdev); 4420 } 4421 4422 static void hci_key_refresh_complete_evt(struct hci_dev *hdev, 4423 struct sk_buff *skb) 4424 { 4425 struct hci_ev_key_refresh_complete *ev = (void *) skb->data; 4426 struct hci_conn *conn; 4427 4428 BT_DBG("%s status 0x%2.2x handle 0x%4.4x", hdev->name, ev->status, 4429 __le16_to_cpu(ev->handle)); 4430 4431 hci_dev_lock(hdev); 4432 4433 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 4434 if (!conn) 4435 goto unlock; 4436 4437 /* For BR/EDR the necessary steps are taken through the 4438 * auth_complete event. 4439 */ 4440 if (conn->type != LE_LINK) 4441 goto unlock; 4442 4443 if (!ev->status) 4444 conn->sec_level = conn->pending_sec_level; 4445 4446 clear_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags); 4447 4448 if (ev->status && conn->state == BT_CONNECTED) { 4449 hci_disconnect(conn, HCI_ERROR_AUTH_FAILURE); 4450 hci_conn_drop(conn); 4451 goto unlock; 4452 } 4453 4454 if (conn->state == BT_CONFIG) { 4455 if (!ev->status) 4456 conn->state = BT_CONNECTED; 4457 4458 hci_connect_cfm(conn, ev->status); 4459 hci_conn_drop(conn); 4460 } else { 4461 hci_auth_cfm(conn, ev->status); 4462 4463 hci_conn_hold(conn); 4464 conn->disc_timeout = HCI_DISCONN_TIMEOUT; 4465 hci_conn_drop(conn); 4466 } 4467 4468 unlock: 4469 hci_dev_unlock(hdev); 4470 } 4471 4472 static u8 hci_get_auth_req(struct hci_conn *conn) 4473 { 4474 /* If remote requests no-bonding follow that lead */ 4475 if (conn->remote_auth == HCI_AT_NO_BONDING || 4476 conn->remote_auth == HCI_AT_NO_BONDING_MITM) 4477 return conn->remote_auth | (conn->auth_type & 0x01); 4478 4479 /* If both remote and local have enough IO capabilities, require 4480 * MITM protection 4481 */ 4482 if (conn->remote_cap != HCI_IO_NO_INPUT_OUTPUT && 4483 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT) 4484 return conn->remote_auth | 0x01; 4485 4486 /* No MITM protection possible so ignore remote requirement */ 4487 return (conn->remote_auth & ~0x01) | (conn->auth_type & 0x01); 4488 } 4489 4490 static u8 bredr_oob_data_present(struct hci_conn *conn) 4491 { 4492 struct hci_dev *hdev = conn->hdev; 4493 struct oob_data *data; 4494 4495 data = hci_find_remote_oob_data(hdev, &conn->dst, BDADDR_BREDR); 4496 if (!data) 4497 return 0x00; 4498 4499 if (bredr_sc_enabled(hdev)) { 4500 /* When Secure Connections is enabled, then just 4501 * return the present value stored with the OOB 4502 * data. The stored value contains the right present 4503 * information. However it can only be trusted when 4504 * not in Secure Connection Only mode. 4505 */ 4506 if (!hci_dev_test_flag(hdev, HCI_SC_ONLY)) 4507 return data->present; 4508 4509 /* When Secure Connections Only mode is enabled, then 4510 * the P-256 values are required. If they are not 4511 * available, then do not declare that OOB data is 4512 * present. 4513 */ 4514 if (!memcmp(data->rand256, ZERO_KEY, 16) || 4515 !memcmp(data->hash256, ZERO_KEY, 16)) 4516 return 0x00; 4517 4518 return 0x02; 4519 } 4520 4521 /* When Secure Connections is not enabled or actually 4522 * not supported by the hardware, then check that if 4523 * P-192 data values are present. 4524 */ 4525 if (!memcmp(data->rand192, ZERO_KEY, 16) || 4526 !memcmp(data->hash192, ZERO_KEY, 16)) 4527 return 0x00; 4528 4529 return 0x01; 4530 } 4531 4532 static void hci_io_capa_request_evt(struct hci_dev *hdev, struct sk_buff *skb) 4533 { 4534 struct hci_ev_io_capa_request *ev = (void *) skb->data; 4535 struct hci_conn *conn; 4536 4537 BT_DBG("%s", hdev->name); 4538 4539 hci_dev_lock(hdev); 4540 4541 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4542 if (!conn) 4543 goto unlock; 4544 4545 hci_conn_hold(conn); 4546 4547 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4548 goto unlock; 4549 4550 /* Allow pairing if we're pairable, the initiators of the 4551 * pairing or if the remote is not requesting bonding. 4552 */ 4553 if (hci_dev_test_flag(hdev, HCI_BONDABLE) || 4554 test_bit(HCI_CONN_AUTH_INITIATOR, &conn->flags) || 4555 (conn->remote_auth & ~0x01) == HCI_AT_NO_BONDING) { 4556 struct hci_cp_io_capability_reply cp; 4557 4558 bacpy(&cp.bdaddr, &ev->bdaddr); 4559 /* Change the IO capability from KeyboardDisplay 4560 * to DisplayYesNo as it is not supported by BT spec. */ 4561 cp.capability = (conn->io_capability == 0x04) ? 4562 HCI_IO_DISPLAY_YESNO : conn->io_capability; 4563 4564 /* If we are initiators, there is no remote information yet */ 4565 if (conn->remote_auth == 0xff) { 4566 /* Request MITM protection if our IO caps allow it 4567 * except for the no-bonding case. 4568 */ 4569 if (conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 4570 conn->auth_type != HCI_AT_NO_BONDING) 4571 conn->auth_type |= 0x01; 4572 } else { 4573 conn->auth_type = hci_get_auth_req(conn); 4574 } 4575 4576 /* If we're not bondable, force one of the non-bondable 4577 * authentication requirement values. 4578 */ 4579 if (!hci_dev_test_flag(hdev, HCI_BONDABLE)) 4580 conn->auth_type &= HCI_AT_NO_BONDING_MITM; 4581 4582 cp.authentication = conn->auth_type; 4583 cp.oob_data = bredr_oob_data_present(conn); 4584 4585 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_REPLY, 4586 sizeof(cp), &cp); 4587 } else { 4588 struct hci_cp_io_capability_neg_reply cp; 4589 4590 bacpy(&cp.bdaddr, &ev->bdaddr); 4591 cp.reason = HCI_ERROR_PAIRING_NOT_ALLOWED; 4592 4593 hci_send_cmd(hdev, HCI_OP_IO_CAPABILITY_NEG_REPLY, 4594 sizeof(cp), &cp); 4595 } 4596 4597 unlock: 4598 hci_dev_unlock(hdev); 4599 } 4600 4601 static void hci_io_capa_reply_evt(struct hci_dev *hdev, struct sk_buff *skb) 4602 { 4603 struct hci_ev_io_capa_reply *ev = (void *) skb->data; 4604 struct hci_conn *conn; 4605 4606 BT_DBG("%s", hdev->name); 4607 4608 hci_dev_lock(hdev); 4609 4610 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4611 if (!conn) 4612 goto unlock; 4613 4614 conn->remote_cap = ev->capability; 4615 conn->remote_auth = ev->authentication; 4616 4617 unlock: 4618 hci_dev_unlock(hdev); 4619 } 4620 4621 static void hci_user_confirm_request_evt(struct hci_dev *hdev, 4622 struct sk_buff *skb) 4623 { 4624 struct hci_ev_user_confirm_req *ev = (void *) skb->data; 4625 int loc_mitm, rem_mitm, confirm_hint = 0; 4626 struct hci_conn *conn; 4627 4628 BT_DBG("%s", hdev->name); 4629 4630 hci_dev_lock(hdev); 4631 4632 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4633 goto unlock; 4634 4635 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4636 if (!conn) 4637 goto unlock; 4638 4639 loc_mitm = (conn->auth_type & 0x01); 4640 rem_mitm = (conn->remote_auth & 0x01); 4641 4642 /* If we require MITM but the remote device can't provide that 4643 * (it has NoInputNoOutput) then reject the confirmation 4644 * request. We check the security level here since it doesn't 4645 * necessarily match conn->auth_type. 4646 */ 4647 if (conn->pending_sec_level > BT_SECURITY_MEDIUM && 4648 conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) { 4649 BT_DBG("Rejecting request: remote device can't provide MITM"); 4650 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_NEG_REPLY, 4651 sizeof(ev->bdaddr), &ev->bdaddr); 4652 goto unlock; 4653 } 4654 4655 /* If no side requires MITM protection; auto-accept */ 4656 if ((!loc_mitm || conn->remote_cap == HCI_IO_NO_INPUT_OUTPUT) && 4657 (!rem_mitm || conn->io_capability == HCI_IO_NO_INPUT_OUTPUT)) { 4658 4659 /* If we're not the initiators request authorization to 4660 * proceed from user space (mgmt_user_confirm with 4661 * confirm_hint set to 1). The exception is if neither 4662 * side had MITM or if the local IO capability is 4663 * NoInputNoOutput, in which case we do auto-accept 4664 */ 4665 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && 4666 conn->io_capability != HCI_IO_NO_INPUT_OUTPUT && 4667 (loc_mitm || rem_mitm)) { 4668 BT_DBG("Confirming auto-accept as acceptor"); 4669 confirm_hint = 1; 4670 goto confirm; 4671 } 4672 4673 /* If there already exists link key in local host, leave the 4674 * decision to user space since the remote device could be 4675 * legitimate or malicious. 4676 */ 4677 if (hci_find_link_key(hdev, &ev->bdaddr)) { 4678 bt_dev_dbg(hdev, "Local host already has link key"); 4679 confirm_hint = 1; 4680 goto confirm; 4681 } 4682 4683 BT_DBG("Auto-accept of user confirmation with %ums delay", 4684 hdev->auto_accept_delay); 4685 4686 if (hdev->auto_accept_delay > 0) { 4687 int delay = msecs_to_jiffies(hdev->auto_accept_delay); 4688 queue_delayed_work(conn->hdev->workqueue, 4689 &conn->auto_accept_work, delay); 4690 goto unlock; 4691 } 4692 4693 hci_send_cmd(hdev, HCI_OP_USER_CONFIRM_REPLY, 4694 sizeof(ev->bdaddr), &ev->bdaddr); 4695 goto unlock; 4696 } 4697 4698 confirm: 4699 mgmt_user_confirm_request(hdev, &ev->bdaddr, ACL_LINK, 0, 4700 le32_to_cpu(ev->passkey), confirm_hint); 4701 4702 unlock: 4703 hci_dev_unlock(hdev); 4704 } 4705 4706 static void hci_user_passkey_request_evt(struct hci_dev *hdev, 4707 struct sk_buff *skb) 4708 { 4709 struct hci_ev_user_passkey_req *ev = (void *) skb->data; 4710 4711 BT_DBG("%s", hdev->name); 4712 4713 if (hci_dev_test_flag(hdev, HCI_MGMT)) 4714 mgmt_user_passkey_request(hdev, &ev->bdaddr, ACL_LINK, 0); 4715 } 4716 4717 static void hci_user_passkey_notify_evt(struct hci_dev *hdev, 4718 struct sk_buff *skb) 4719 { 4720 struct hci_ev_user_passkey_notify *ev = (void *) skb->data; 4721 struct hci_conn *conn; 4722 4723 BT_DBG("%s", hdev->name); 4724 4725 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4726 if (!conn) 4727 return; 4728 4729 conn->passkey_notify = __le32_to_cpu(ev->passkey); 4730 conn->passkey_entered = 0; 4731 4732 if (hci_dev_test_flag(hdev, HCI_MGMT)) 4733 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 4734 conn->dst_type, conn->passkey_notify, 4735 conn->passkey_entered); 4736 } 4737 4738 static void hci_keypress_notify_evt(struct hci_dev *hdev, struct sk_buff *skb) 4739 { 4740 struct hci_ev_keypress_notify *ev = (void *) skb->data; 4741 struct hci_conn *conn; 4742 4743 BT_DBG("%s", hdev->name); 4744 4745 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4746 if (!conn) 4747 return; 4748 4749 switch (ev->type) { 4750 case HCI_KEYPRESS_STARTED: 4751 conn->passkey_entered = 0; 4752 return; 4753 4754 case HCI_KEYPRESS_ENTERED: 4755 conn->passkey_entered++; 4756 break; 4757 4758 case HCI_KEYPRESS_ERASED: 4759 conn->passkey_entered--; 4760 break; 4761 4762 case HCI_KEYPRESS_CLEARED: 4763 conn->passkey_entered = 0; 4764 break; 4765 4766 case HCI_KEYPRESS_COMPLETED: 4767 return; 4768 } 4769 4770 if (hci_dev_test_flag(hdev, HCI_MGMT)) 4771 mgmt_user_passkey_notify(hdev, &conn->dst, conn->type, 4772 conn->dst_type, conn->passkey_notify, 4773 conn->passkey_entered); 4774 } 4775 4776 static void hci_simple_pair_complete_evt(struct hci_dev *hdev, 4777 struct sk_buff *skb) 4778 { 4779 struct hci_ev_simple_pair_complete *ev = (void *) skb->data; 4780 struct hci_conn *conn; 4781 4782 BT_DBG("%s", hdev->name); 4783 4784 hci_dev_lock(hdev); 4785 4786 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4787 if (!conn) 4788 goto unlock; 4789 4790 /* Reset the authentication requirement to unknown */ 4791 conn->remote_auth = 0xff; 4792 4793 /* To avoid duplicate auth_failed events to user space we check 4794 * the HCI_CONN_AUTH_PEND flag which will be set if we 4795 * initiated the authentication. A traditional auth_complete 4796 * event gets always produced as initiator and is also mapped to 4797 * the mgmt_auth_failed event */ 4798 if (!test_bit(HCI_CONN_AUTH_PEND, &conn->flags) && ev->status) 4799 mgmt_auth_failed(conn, ev->status); 4800 4801 hci_conn_drop(conn); 4802 4803 unlock: 4804 hci_dev_unlock(hdev); 4805 } 4806 4807 static void hci_remote_host_features_evt(struct hci_dev *hdev, 4808 struct sk_buff *skb) 4809 { 4810 struct hci_ev_remote_host_features *ev = (void *) skb->data; 4811 struct inquiry_entry *ie; 4812 struct hci_conn *conn; 4813 4814 BT_DBG("%s", hdev->name); 4815 4816 hci_dev_lock(hdev); 4817 4818 conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &ev->bdaddr); 4819 if (conn) 4820 memcpy(conn->features[1], ev->features, 8); 4821 4822 ie = hci_inquiry_cache_lookup(hdev, &ev->bdaddr); 4823 if (ie) 4824 ie->data.ssp_mode = (ev->features[0] & LMP_HOST_SSP); 4825 4826 hci_dev_unlock(hdev); 4827 } 4828 4829 static void hci_remote_oob_data_request_evt(struct hci_dev *hdev, 4830 struct sk_buff *skb) 4831 { 4832 struct hci_ev_remote_oob_data_request *ev = (void *) skb->data; 4833 struct oob_data *data; 4834 4835 BT_DBG("%s", hdev->name); 4836 4837 hci_dev_lock(hdev); 4838 4839 if (!hci_dev_test_flag(hdev, HCI_MGMT)) 4840 goto unlock; 4841 4842 data = hci_find_remote_oob_data(hdev, &ev->bdaddr, BDADDR_BREDR); 4843 if (!data) { 4844 struct hci_cp_remote_oob_data_neg_reply cp; 4845 4846 bacpy(&cp.bdaddr, &ev->bdaddr); 4847 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_NEG_REPLY, 4848 sizeof(cp), &cp); 4849 goto unlock; 4850 } 4851 4852 if (bredr_sc_enabled(hdev)) { 4853 struct hci_cp_remote_oob_ext_data_reply cp; 4854 4855 bacpy(&cp.bdaddr, &ev->bdaddr); 4856 if (hci_dev_test_flag(hdev, HCI_SC_ONLY)) { 4857 memset(cp.hash192, 0, sizeof(cp.hash192)); 4858 memset(cp.rand192, 0, sizeof(cp.rand192)); 4859 } else { 4860 memcpy(cp.hash192, data->hash192, sizeof(cp.hash192)); 4861 memcpy(cp.rand192, data->rand192, sizeof(cp.rand192)); 4862 } 4863 memcpy(cp.hash256, data->hash256, sizeof(cp.hash256)); 4864 memcpy(cp.rand256, data->rand256, sizeof(cp.rand256)); 4865 4866 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_EXT_DATA_REPLY, 4867 sizeof(cp), &cp); 4868 } else { 4869 struct hci_cp_remote_oob_data_reply cp; 4870 4871 bacpy(&cp.bdaddr, &ev->bdaddr); 4872 memcpy(cp.hash, data->hash192, sizeof(cp.hash)); 4873 memcpy(cp.rand, data->rand192, sizeof(cp.rand)); 4874 4875 hci_send_cmd(hdev, HCI_OP_REMOTE_OOB_DATA_REPLY, 4876 sizeof(cp), &cp); 4877 } 4878 4879 unlock: 4880 hci_dev_unlock(hdev); 4881 } 4882 4883 #if IS_ENABLED(CONFIG_BT_HS) 4884 static void hci_chan_selected_evt(struct hci_dev *hdev, struct sk_buff *skb) 4885 { 4886 struct hci_ev_channel_selected *ev = (void *)skb->data; 4887 struct hci_conn *hcon; 4888 4889 BT_DBG("%s handle 0x%2.2x", hdev->name, ev->phy_handle); 4890 4891 skb_pull(skb, sizeof(*ev)); 4892 4893 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 4894 if (!hcon) 4895 return; 4896 4897 amp_read_loc_assoc_final_data(hdev, hcon); 4898 } 4899 4900 static void hci_phy_link_complete_evt(struct hci_dev *hdev, 4901 struct sk_buff *skb) 4902 { 4903 struct hci_ev_phy_link_complete *ev = (void *) skb->data; 4904 struct hci_conn *hcon, *bredr_hcon; 4905 4906 BT_DBG("%s handle 0x%2.2x status 0x%2.2x", hdev->name, ev->phy_handle, 4907 ev->status); 4908 4909 hci_dev_lock(hdev); 4910 4911 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 4912 if (!hcon) { 4913 hci_dev_unlock(hdev); 4914 return; 4915 } 4916 4917 if (ev->status) { 4918 hci_conn_del(hcon); 4919 hci_dev_unlock(hdev); 4920 return; 4921 } 4922 4923 bredr_hcon = hcon->amp_mgr->l2cap_conn->hcon; 4924 4925 hcon->state = BT_CONNECTED; 4926 bacpy(&hcon->dst, &bredr_hcon->dst); 4927 4928 hci_conn_hold(hcon); 4929 hcon->disc_timeout = HCI_DISCONN_TIMEOUT; 4930 hci_conn_drop(hcon); 4931 4932 hci_debugfs_create_conn(hcon); 4933 hci_conn_add_sysfs(hcon); 4934 4935 amp_physical_cfm(bredr_hcon, hcon); 4936 4937 hci_dev_unlock(hdev); 4938 } 4939 4940 static void hci_loglink_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) 4941 { 4942 struct hci_ev_logical_link_complete *ev = (void *) skb->data; 4943 struct hci_conn *hcon; 4944 struct hci_chan *hchan; 4945 struct amp_mgr *mgr; 4946 4947 BT_DBG("%s log_handle 0x%4.4x phy_handle 0x%2.2x status 0x%2.2x", 4948 hdev->name, le16_to_cpu(ev->handle), ev->phy_handle, 4949 ev->status); 4950 4951 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 4952 if (!hcon) 4953 return; 4954 4955 /* Create AMP hchan */ 4956 hchan = hci_chan_create(hcon); 4957 if (!hchan) 4958 return; 4959 4960 hchan->handle = le16_to_cpu(ev->handle); 4961 4962 BT_DBG("hcon %p mgr %p hchan %p", hcon, hcon->amp_mgr, hchan); 4963 4964 mgr = hcon->amp_mgr; 4965 if (mgr && mgr->bredr_chan) { 4966 struct l2cap_chan *bredr_chan = mgr->bredr_chan; 4967 4968 l2cap_chan_lock(bredr_chan); 4969 4970 bredr_chan->conn->mtu = hdev->block_mtu; 4971 l2cap_logical_cfm(bredr_chan, hchan, 0); 4972 hci_conn_hold(hcon); 4973 4974 l2cap_chan_unlock(bredr_chan); 4975 } 4976 } 4977 4978 static void hci_disconn_loglink_complete_evt(struct hci_dev *hdev, 4979 struct sk_buff *skb) 4980 { 4981 struct hci_ev_disconn_logical_link_complete *ev = (void *) skb->data; 4982 struct hci_chan *hchan; 4983 4984 BT_DBG("%s log handle 0x%4.4x status 0x%2.2x", hdev->name, 4985 le16_to_cpu(ev->handle), ev->status); 4986 4987 if (ev->status) 4988 return; 4989 4990 hci_dev_lock(hdev); 4991 4992 hchan = hci_chan_lookup_handle(hdev, le16_to_cpu(ev->handle)); 4993 if (!hchan) 4994 goto unlock; 4995 4996 amp_destroy_logical_link(hchan, ev->reason); 4997 4998 unlock: 4999 hci_dev_unlock(hdev); 5000 } 5001 5002 static void hci_disconn_phylink_complete_evt(struct hci_dev *hdev, 5003 struct sk_buff *skb) 5004 { 5005 struct hci_ev_disconn_phy_link_complete *ev = (void *) skb->data; 5006 struct hci_conn *hcon; 5007 5008 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 5009 5010 if (ev->status) 5011 return; 5012 5013 hci_dev_lock(hdev); 5014 5015 hcon = hci_conn_hash_lookup_handle(hdev, ev->phy_handle); 5016 if (hcon) { 5017 hcon->state = BT_CLOSED; 5018 hci_conn_del(hcon); 5019 } 5020 5021 hci_dev_unlock(hdev); 5022 } 5023 #endif 5024 5025 static void le_conn_complete_evt(struct hci_dev *hdev, u8 status, 5026 bdaddr_t *bdaddr, u8 bdaddr_type, u8 role, u16 handle, 5027 u16 interval, u16 latency, u16 supervision_timeout) 5028 { 5029 struct hci_conn_params *params; 5030 struct hci_conn *conn; 5031 struct smp_irk *irk; 5032 u8 addr_type; 5033 5034 hci_dev_lock(hdev); 5035 5036 /* All controllers implicitly stop advertising in the event of a 5037 * connection, so ensure that the state bit is cleared. 5038 */ 5039 hci_dev_clear_flag(hdev, HCI_LE_ADV); 5040 5041 conn = hci_lookup_le_connect(hdev); 5042 if (!conn) { 5043 conn = hci_conn_add(hdev, LE_LINK, bdaddr, role); 5044 if (!conn) { 5045 bt_dev_err(hdev, "no memory for new connection"); 5046 goto unlock; 5047 } 5048 5049 conn->dst_type = bdaddr_type; 5050 5051 /* If we didn't have a hci_conn object previously 5052 * but we're in master role this must be something 5053 * initiated using a white list. Since white list based 5054 * connections are not "first class citizens" we don't 5055 * have full tracking of them. Therefore, we go ahead 5056 * with a "best effort" approach of determining the 5057 * initiator address based on the HCI_PRIVACY flag. 5058 */ 5059 if (conn->out) { 5060 conn->resp_addr_type = bdaddr_type; 5061 bacpy(&conn->resp_addr, bdaddr); 5062 if (hci_dev_test_flag(hdev, HCI_PRIVACY)) { 5063 conn->init_addr_type = ADDR_LE_DEV_RANDOM; 5064 bacpy(&conn->init_addr, &hdev->rpa); 5065 } else { 5066 hci_copy_identity_address(hdev, 5067 &conn->init_addr, 5068 &conn->init_addr_type); 5069 } 5070 } 5071 } else { 5072 cancel_delayed_work(&conn->le_conn_timeout); 5073 } 5074 5075 if (!conn->out) { 5076 /* Set the responder (our side) address type based on 5077 * the advertising address type. 5078 */ 5079 conn->resp_addr_type = hdev->adv_addr_type; 5080 if (hdev->adv_addr_type == ADDR_LE_DEV_RANDOM) { 5081 /* In case of ext adv, resp_addr will be updated in 5082 * Adv Terminated event. 5083 */ 5084 if (!ext_adv_capable(hdev)) 5085 bacpy(&conn->resp_addr, &hdev->random_addr); 5086 } else { 5087 bacpy(&conn->resp_addr, &hdev->bdaddr); 5088 } 5089 5090 conn->init_addr_type = bdaddr_type; 5091 bacpy(&conn->init_addr, bdaddr); 5092 5093 /* For incoming connections, set the default minimum 5094 * and maximum connection interval. They will be used 5095 * to check if the parameters are in range and if not 5096 * trigger the connection update procedure. 5097 */ 5098 conn->le_conn_min_interval = hdev->le_conn_min_interval; 5099 conn->le_conn_max_interval = hdev->le_conn_max_interval; 5100 } 5101 5102 /* Lookup the identity address from the stored connection 5103 * address and address type. 5104 * 5105 * When establishing connections to an identity address, the 5106 * connection procedure will store the resolvable random 5107 * address first. Now if it can be converted back into the 5108 * identity address, start using the identity address from 5109 * now on. 5110 */ 5111 irk = hci_get_irk(hdev, &conn->dst, conn->dst_type); 5112 if (irk) { 5113 bacpy(&conn->dst, &irk->bdaddr); 5114 conn->dst_type = irk->addr_type; 5115 } 5116 5117 if (status) { 5118 hci_le_conn_failed(conn, status); 5119 goto unlock; 5120 } 5121 5122 if (conn->dst_type == ADDR_LE_DEV_PUBLIC) 5123 addr_type = BDADDR_LE_PUBLIC; 5124 else 5125 addr_type = BDADDR_LE_RANDOM; 5126 5127 /* Drop the connection if the device is blocked */ 5128 if (hci_bdaddr_list_lookup(&hdev->blacklist, &conn->dst, addr_type)) { 5129 hci_conn_drop(conn); 5130 goto unlock; 5131 } 5132 5133 if (!test_and_set_bit(HCI_CONN_MGMT_CONNECTED, &conn->flags)) 5134 mgmt_device_connected(hdev, conn, 0, NULL, 0); 5135 5136 conn->sec_level = BT_SECURITY_LOW; 5137 conn->handle = handle; 5138 conn->state = BT_CONFIG; 5139 5140 conn->le_conn_interval = interval; 5141 conn->le_conn_latency = latency; 5142 conn->le_supv_timeout = supervision_timeout; 5143 5144 hci_debugfs_create_conn(conn); 5145 hci_conn_add_sysfs(conn); 5146 5147 /* The remote features procedure is defined for master 5148 * role only. So only in case of an initiated connection 5149 * request the remote features. 5150 * 5151 * If the local controller supports slave-initiated features 5152 * exchange, then requesting the remote features in slave 5153 * role is possible. Otherwise just transition into the 5154 * connected state without requesting the remote features. 5155 */ 5156 if (conn->out || 5157 (hdev->le_features[0] & HCI_LE_SLAVE_FEATURES)) { 5158 struct hci_cp_le_read_remote_features cp; 5159 5160 cp.handle = __cpu_to_le16(conn->handle); 5161 5162 hci_send_cmd(hdev, HCI_OP_LE_READ_REMOTE_FEATURES, 5163 sizeof(cp), &cp); 5164 5165 hci_conn_hold(conn); 5166 } else { 5167 conn->state = BT_CONNECTED; 5168 hci_connect_cfm(conn, status); 5169 } 5170 5171 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, &conn->dst, 5172 conn->dst_type); 5173 if (params) { 5174 list_del_init(¶ms->action); 5175 if (params->conn) { 5176 hci_conn_drop(params->conn); 5177 hci_conn_put(params->conn); 5178 params->conn = NULL; 5179 } 5180 } 5181 5182 unlock: 5183 hci_update_background_scan(hdev); 5184 hci_dev_unlock(hdev); 5185 } 5186 5187 static void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *skb) 5188 { 5189 struct hci_ev_le_conn_complete *ev = (void *) skb->data; 5190 5191 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 5192 5193 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5194 ev->role, le16_to_cpu(ev->handle), 5195 le16_to_cpu(ev->interval), 5196 le16_to_cpu(ev->latency), 5197 le16_to_cpu(ev->supervision_timeout)); 5198 } 5199 5200 static void hci_le_enh_conn_complete_evt(struct hci_dev *hdev, 5201 struct sk_buff *skb) 5202 { 5203 struct hci_ev_le_enh_conn_complete *ev = (void *) skb->data; 5204 5205 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 5206 5207 le_conn_complete_evt(hdev, ev->status, &ev->bdaddr, ev->bdaddr_type, 5208 ev->role, le16_to_cpu(ev->handle), 5209 le16_to_cpu(ev->interval), 5210 le16_to_cpu(ev->latency), 5211 le16_to_cpu(ev->supervision_timeout)); 5212 } 5213 5214 static void hci_le_ext_adv_term_evt(struct hci_dev *hdev, struct sk_buff *skb) 5215 { 5216 struct hci_evt_le_ext_adv_set_term *ev = (void *) skb->data; 5217 struct hci_conn *conn; 5218 5219 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 5220 5221 if (ev->status) 5222 return; 5223 5224 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->conn_handle)); 5225 if (conn) { 5226 struct adv_info *adv_instance; 5227 5228 if (hdev->adv_addr_type != ADDR_LE_DEV_RANDOM) 5229 return; 5230 5231 if (!hdev->cur_adv_instance) { 5232 bacpy(&conn->resp_addr, &hdev->random_addr); 5233 return; 5234 } 5235 5236 adv_instance = hci_find_adv_instance(hdev, hdev->cur_adv_instance); 5237 if (adv_instance) 5238 bacpy(&conn->resp_addr, &adv_instance->random_addr); 5239 } 5240 } 5241 5242 static void hci_le_conn_update_complete_evt(struct hci_dev *hdev, 5243 struct sk_buff *skb) 5244 { 5245 struct hci_ev_le_conn_update_complete *ev = (void *) skb->data; 5246 struct hci_conn *conn; 5247 5248 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 5249 5250 if (ev->status) 5251 return; 5252 5253 hci_dev_lock(hdev); 5254 5255 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5256 if (conn) { 5257 conn->le_conn_interval = le16_to_cpu(ev->interval); 5258 conn->le_conn_latency = le16_to_cpu(ev->latency); 5259 conn->le_supv_timeout = le16_to_cpu(ev->supervision_timeout); 5260 } 5261 5262 hci_dev_unlock(hdev); 5263 } 5264 5265 /* This function requires the caller holds hdev->lock */ 5266 static struct hci_conn *check_pending_le_conn(struct hci_dev *hdev, 5267 bdaddr_t *addr, 5268 u8 addr_type, u8 adv_type, 5269 bdaddr_t *direct_rpa) 5270 { 5271 struct hci_conn *conn; 5272 struct hci_conn_params *params; 5273 5274 /* If the event is not connectable don't proceed further */ 5275 if (adv_type != LE_ADV_IND && adv_type != LE_ADV_DIRECT_IND) 5276 return NULL; 5277 5278 /* Ignore if the device is blocked */ 5279 if (hci_bdaddr_list_lookup(&hdev->blacklist, addr, addr_type)) 5280 return NULL; 5281 5282 /* Most controller will fail if we try to create new connections 5283 * while we have an existing one in slave role. 5284 */ 5285 if (hdev->conn_hash.le_num_slave > 0 && 5286 (!test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) || 5287 !(hdev->le_states[3] & 0x10))) 5288 return NULL; 5289 5290 /* If we're not connectable only connect devices that we have in 5291 * our pend_le_conns list. 5292 */ 5293 params = hci_pend_le_action_lookup(&hdev->pend_le_conns, addr, 5294 addr_type); 5295 if (!params) 5296 return NULL; 5297 5298 if (!params->explicit_connect) { 5299 switch (params->auto_connect) { 5300 case HCI_AUTO_CONN_DIRECT: 5301 /* Only devices advertising with ADV_DIRECT_IND are 5302 * triggering a connection attempt. This is allowing 5303 * incoming connections from slave devices. 5304 */ 5305 if (adv_type != LE_ADV_DIRECT_IND) 5306 return NULL; 5307 break; 5308 case HCI_AUTO_CONN_ALWAYS: 5309 /* Devices advertising with ADV_IND or ADV_DIRECT_IND 5310 * are triggering a connection attempt. This means 5311 * that incoming connections from slave device are 5312 * accepted and also outgoing connections to slave 5313 * devices are established when found. 5314 */ 5315 break; 5316 default: 5317 return NULL; 5318 } 5319 } 5320 5321 conn = hci_connect_le(hdev, addr, addr_type, BT_SECURITY_LOW, 5322 HCI_LE_AUTOCONN_TIMEOUT, HCI_ROLE_MASTER, 5323 direct_rpa); 5324 if (!IS_ERR(conn)) { 5325 /* If HCI_AUTO_CONN_EXPLICIT is set, conn is already owned 5326 * by higher layer that tried to connect, if no then 5327 * store the pointer since we don't really have any 5328 * other owner of the object besides the params that 5329 * triggered it. This way we can abort the connection if 5330 * the parameters get removed and keep the reference 5331 * count consistent once the connection is established. 5332 */ 5333 5334 if (!params->explicit_connect) 5335 params->conn = hci_conn_get(conn); 5336 5337 return conn; 5338 } 5339 5340 switch (PTR_ERR(conn)) { 5341 case -EBUSY: 5342 /* If hci_connect() returns -EBUSY it means there is already 5343 * an LE connection attempt going on. Since controllers don't 5344 * support more than one connection attempt at the time, we 5345 * don't consider this an error case. 5346 */ 5347 break; 5348 default: 5349 BT_DBG("Failed to connect: err %ld", PTR_ERR(conn)); 5350 return NULL; 5351 } 5352 5353 return NULL; 5354 } 5355 5356 static void process_adv_report(struct hci_dev *hdev, u8 type, bdaddr_t *bdaddr, 5357 u8 bdaddr_type, bdaddr_t *direct_addr, 5358 u8 direct_addr_type, s8 rssi, u8 *data, u8 len) 5359 { 5360 struct discovery_state *d = &hdev->discovery; 5361 struct smp_irk *irk; 5362 struct hci_conn *conn; 5363 bool match; 5364 u32 flags; 5365 u8 *ptr, real_len; 5366 5367 switch (type) { 5368 case LE_ADV_IND: 5369 case LE_ADV_DIRECT_IND: 5370 case LE_ADV_SCAN_IND: 5371 case LE_ADV_NONCONN_IND: 5372 case LE_ADV_SCAN_RSP: 5373 break; 5374 default: 5375 bt_dev_err_ratelimited(hdev, "unknown advertising packet " 5376 "type: 0x%02x", type); 5377 return; 5378 } 5379 5380 /* Find the end of the data in case the report contains padded zero 5381 * bytes at the end causing an invalid length value. 5382 * 5383 * When data is NULL, len is 0 so there is no need for extra ptr 5384 * check as 'ptr < data + 0' is already false in such case. 5385 */ 5386 for (ptr = data; ptr < data + len && *ptr; ptr += *ptr + 1) { 5387 if (ptr + 1 + *ptr > data + len) 5388 break; 5389 } 5390 5391 real_len = ptr - data; 5392 5393 /* Adjust for actual length */ 5394 if (len != real_len) { 5395 bt_dev_err_ratelimited(hdev, "advertising data len corrected %u -> %u", 5396 len, real_len); 5397 len = real_len; 5398 } 5399 5400 /* If the direct address is present, then this report is from 5401 * a LE Direct Advertising Report event. In that case it is 5402 * important to see if the address is matching the local 5403 * controller address. 5404 */ 5405 if (direct_addr) { 5406 /* Only resolvable random addresses are valid for these 5407 * kind of reports and others can be ignored. 5408 */ 5409 if (!hci_bdaddr_is_rpa(direct_addr, direct_addr_type)) 5410 return; 5411 5412 /* If the controller is not using resolvable random 5413 * addresses, then this report can be ignored. 5414 */ 5415 if (!hci_dev_test_flag(hdev, HCI_PRIVACY)) 5416 return; 5417 5418 /* If the local IRK of the controller does not match 5419 * with the resolvable random address provided, then 5420 * this report can be ignored. 5421 */ 5422 if (!smp_irk_matches(hdev, hdev->irk, direct_addr)) 5423 return; 5424 } 5425 5426 /* Check if we need to convert to identity address */ 5427 irk = hci_get_irk(hdev, bdaddr, bdaddr_type); 5428 if (irk) { 5429 bdaddr = &irk->bdaddr; 5430 bdaddr_type = irk->addr_type; 5431 } 5432 5433 /* Check if we have been requested to connect to this device. 5434 * 5435 * direct_addr is set only for directed advertising reports (it is NULL 5436 * for advertising reports) and is already verified to be RPA above. 5437 */ 5438 conn = check_pending_le_conn(hdev, bdaddr, bdaddr_type, type, 5439 direct_addr); 5440 if (conn && type == LE_ADV_IND) { 5441 /* Store report for later inclusion by 5442 * mgmt_device_connected 5443 */ 5444 memcpy(conn->le_adv_data, data, len); 5445 conn->le_adv_data_len = len; 5446 } 5447 5448 /* Passive scanning shouldn't trigger any device found events, 5449 * except for devices marked as CONN_REPORT for which we do send 5450 * device found events. 5451 */ 5452 if (hdev->le_scan_type == LE_SCAN_PASSIVE) { 5453 if (type == LE_ADV_DIRECT_IND) 5454 return; 5455 5456 if (!hci_pend_le_action_lookup(&hdev->pend_le_reports, 5457 bdaddr, bdaddr_type)) 5458 return; 5459 5460 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND) 5461 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 5462 else 5463 flags = 0; 5464 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 5465 rssi, flags, data, len, NULL, 0); 5466 return; 5467 } 5468 5469 /* When receiving non-connectable or scannable undirected 5470 * advertising reports, this means that the remote device is 5471 * not connectable and then clearly indicate this in the 5472 * device found event. 5473 * 5474 * When receiving a scan response, then there is no way to 5475 * know if the remote device is connectable or not. However 5476 * since scan responses are merged with a previously seen 5477 * advertising report, the flags field from that report 5478 * will be used. 5479 * 5480 * In the really unlikely case that a controller get confused 5481 * and just sends a scan response event, then it is marked as 5482 * not connectable as well. 5483 */ 5484 if (type == LE_ADV_NONCONN_IND || type == LE_ADV_SCAN_IND || 5485 type == LE_ADV_SCAN_RSP) 5486 flags = MGMT_DEV_FOUND_NOT_CONNECTABLE; 5487 else 5488 flags = 0; 5489 5490 /* If there's nothing pending either store the data from this 5491 * event or send an immediate device found event if the data 5492 * should not be stored for later. 5493 */ 5494 if (!has_pending_adv_report(hdev)) { 5495 /* If the report will trigger a SCAN_REQ store it for 5496 * later merging. 5497 */ 5498 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 5499 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 5500 rssi, flags, data, len); 5501 return; 5502 } 5503 5504 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 5505 rssi, flags, data, len, NULL, 0); 5506 return; 5507 } 5508 5509 /* Check if the pending report is for the same device as the new one */ 5510 match = (!bacmp(bdaddr, &d->last_adv_addr) && 5511 bdaddr_type == d->last_adv_addr_type); 5512 5513 /* If the pending data doesn't match this report or this isn't a 5514 * scan response (e.g. we got a duplicate ADV_IND) then force 5515 * sending of the pending data. 5516 */ 5517 if (type != LE_ADV_SCAN_RSP || !match) { 5518 /* Send out whatever is in the cache, but skip duplicates */ 5519 if (!match) 5520 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 5521 d->last_adv_addr_type, NULL, 5522 d->last_adv_rssi, d->last_adv_flags, 5523 d->last_adv_data, 5524 d->last_adv_data_len, NULL, 0); 5525 5526 /* If the new report will trigger a SCAN_REQ store it for 5527 * later merging. 5528 */ 5529 if (type == LE_ADV_IND || type == LE_ADV_SCAN_IND) { 5530 store_pending_adv_report(hdev, bdaddr, bdaddr_type, 5531 rssi, flags, data, len); 5532 return; 5533 } 5534 5535 /* The advertising reports cannot be merged, so clear 5536 * the pending report and send out a device found event. 5537 */ 5538 clear_pending_adv_report(hdev); 5539 mgmt_device_found(hdev, bdaddr, LE_LINK, bdaddr_type, NULL, 5540 rssi, flags, data, len, NULL, 0); 5541 return; 5542 } 5543 5544 /* If we get here we've got a pending ADV_IND or ADV_SCAN_IND and 5545 * the new event is a SCAN_RSP. We can therefore proceed with 5546 * sending a merged device found event. 5547 */ 5548 mgmt_device_found(hdev, &d->last_adv_addr, LE_LINK, 5549 d->last_adv_addr_type, NULL, rssi, d->last_adv_flags, 5550 d->last_adv_data, d->last_adv_data_len, data, len); 5551 clear_pending_adv_report(hdev); 5552 } 5553 5554 static void hci_le_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb) 5555 { 5556 u8 num_reports = skb->data[0]; 5557 void *ptr = &skb->data[1]; 5558 5559 hci_dev_lock(hdev); 5560 5561 while (num_reports--) { 5562 struct hci_ev_le_advertising_info *ev = ptr; 5563 s8 rssi; 5564 5565 if (ev->length <= HCI_MAX_AD_LENGTH) { 5566 rssi = ev->data[ev->length]; 5567 process_adv_report(hdev, ev->evt_type, &ev->bdaddr, 5568 ev->bdaddr_type, NULL, 0, rssi, 5569 ev->data, ev->length); 5570 } else { 5571 bt_dev_err(hdev, "Dropping invalid advertising data"); 5572 } 5573 5574 ptr += sizeof(*ev) + ev->length + 1; 5575 } 5576 5577 hci_dev_unlock(hdev); 5578 } 5579 5580 static u8 ext_evt_type_to_legacy(struct hci_dev *hdev, u16 evt_type) 5581 { 5582 if (evt_type & LE_EXT_ADV_LEGACY_PDU) { 5583 switch (evt_type) { 5584 case LE_LEGACY_ADV_IND: 5585 return LE_ADV_IND; 5586 case LE_LEGACY_ADV_DIRECT_IND: 5587 return LE_ADV_DIRECT_IND; 5588 case LE_LEGACY_ADV_SCAN_IND: 5589 return LE_ADV_SCAN_IND; 5590 case LE_LEGACY_NONCONN_IND: 5591 return LE_ADV_NONCONN_IND; 5592 case LE_LEGACY_SCAN_RSP_ADV: 5593 case LE_LEGACY_SCAN_RSP_ADV_SCAN: 5594 return LE_ADV_SCAN_RSP; 5595 } 5596 5597 goto invalid; 5598 } 5599 5600 if (evt_type & LE_EXT_ADV_CONN_IND) { 5601 if (evt_type & LE_EXT_ADV_DIRECT_IND) 5602 return LE_ADV_DIRECT_IND; 5603 5604 return LE_ADV_IND; 5605 } 5606 5607 if (evt_type & LE_EXT_ADV_SCAN_RSP) 5608 return LE_ADV_SCAN_RSP; 5609 5610 if (evt_type & LE_EXT_ADV_SCAN_IND) 5611 return LE_ADV_SCAN_IND; 5612 5613 if (evt_type == LE_EXT_ADV_NON_CONN_IND || 5614 evt_type & LE_EXT_ADV_DIRECT_IND) 5615 return LE_ADV_NONCONN_IND; 5616 5617 invalid: 5618 bt_dev_err_ratelimited(hdev, "Unknown advertising packet type: 0x%02x", 5619 evt_type); 5620 5621 return LE_ADV_INVALID; 5622 } 5623 5624 static void hci_le_ext_adv_report_evt(struct hci_dev *hdev, struct sk_buff *skb) 5625 { 5626 u8 num_reports = skb->data[0]; 5627 void *ptr = &skb->data[1]; 5628 5629 hci_dev_lock(hdev); 5630 5631 while (num_reports--) { 5632 struct hci_ev_le_ext_adv_report *ev = ptr; 5633 u8 legacy_evt_type; 5634 u16 evt_type; 5635 5636 evt_type = __le16_to_cpu(ev->evt_type); 5637 legacy_evt_type = ext_evt_type_to_legacy(hdev, evt_type); 5638 if (legacy_evt_type != LE_ADV_INVALID) { 5639 process_adv_report(hdev, legacy_evt_type, &ev->bdaddr, 5640 ev->bdaddr_type, NULL, 0, ev->rssi, 5641 ev->data, ev->length); 5642 } 5643 5644 ptr += sizeof(*ev) + ev->length; 5645 } 5646 5647 hci_dev_unlock(hdev); 5648 } 5649 5650 static void hci_le_remote_feat_complete_evt(struct hci_dev *hdev, 5651 struct sk_buff *skb) 5652 { 5653 struct hci_ev_le_remote_feat_complete *ev = (void *)skb->data; 5654 struct hci_conn *conn; 5655 5656 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 5657 5658 hci_dev_lock(hdev); 5659 5660 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5661 if (conn) { 5662 if (!ev->status) 5663 memcpy(conn->features[0], ev->features, 8); 5664 5665 if (conn->state == BT_CONFIG) { 5666 __u8 status; 5667 5668 /* If the local controller supports slave-initiated 5669 * features exchange, but the remote controller does 5670 * not, then it is possible that the error code 0x1a 5671 * for unsupported remote feature gets returned. 5672 * 5673 * In this specific case, allow the connection to 5674 * transition into connected state and mark it as 5675 * successful. 5676 */ 5677 if ((hdev->le_features[0] & HCI_LE_SLAVE_FEATURES) && 5678 !conn->out && ev->status == 0x1a) 5679 status = 0x00; 5680 else 5681 status = ev->status; 5682 5683 conn->state = BT_CONNECTED; 5684 hci_connect_cfm(conn, status); 5685 hci_conn_drop(conn); 5686 } 5687 } 5688 5689 hci_dev_unlock(hdev); 5690 } 5691 5692 static void hci_le_ltk_request_evt(struct hci_dev *hdev, struct sk_buff *skb) 5693 { 5694 struct hci_ev_le_ltk_req *ev = (void *) skb->data; 5695 struct hci_cp_le_ltk_reply cp; 5696 struct hci_cp_le_ltk_neg_reply neg; 5697 struct hci_conn *conn; 5698 struct smp_ltk *ltk; 5699 5700 BT_DBG("%s handle 0x%4.4x", hdev->name, __le16_to_cpu(ev->handle)); 5701 5702 hci_dev_lock(hdev); 5703 5704 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5705 if (conn == NULL) 5706 goto not_found; 5707 5708 ltk = hci_find_ltk(hdev, &conn->dst, conn->dst_type, conn->role); 5709 if (!ltk) 5710 goto not_found; 5711 5712 if (smp_ltk_is_sc(ltk)) { 5713 /* With SC both EDiv and Rand are set to zero */ 5714 if (ev->ediv || ev->rand) 5715 goto not_found; 5716 } else { 5717 /* For non-SC keys check that EDiv and Rand match */ 5718 if (ev->ediv != ltk->ediv || ev->rand != ltk->rand) 5719 goto not_found; 5720 } 5721 5722 memcpy(cp.ltk, ltk->val, ltk->enc_size); 5723 memset(cp.ltk + ltk->enc_size, 0, sizeof(cp.ltk) - ltk->enc_size); 5724 cp.handle = cpu_to_le16(conn->handle); 5725 5726 conn->pending_sec_level = smp_ltk_sec_level(ltk); 5727 5728 conn->enc_key_size = ltk->enc_size; 5729 5730 hci_send_cmd(hdev, HCI_OP_LE_LTK_REPLY, sizeof(cp), &cp); 5731 5732 /* Ref. Bluetooth Core SPEC pages 1975 and 2004. STK is a 5733 * temporary key used to encrypt a connection following 5734 * pairing. It is used during the Encrypted Session Setup to 5735 * distribute the keys. Later, security can be re-established 5736 * using a distributed LTK. 5737 */ 5738 if (ltk->type == SMP_STK) { 5739 set_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 5740 list_del_rcu(<k->list); 5741 kfree_rcu(ltk, rcu); 5742 } else { 5743 clear_bit(HCI_CONN_STK_ENCRYPT, &conn->flags); 5744 } 5745 5746 hci_dev_unlock(hdev); 5747 5748 return; 5749 5750 not_found: 5751 neg.handle = ev->handle; 5752 hci_send_cmd(hdev, HCI_OP_LE_LTK_NEG_REPLY, sizeof(neg), &neg); 5753 hci_dev_unlock(hdev); 5754 } 5755 5756 static void send_conn_param_neg_reply(struct hci_dev *hdev, u16 handle, 5757 u8 reason) 5758 { 5759 struct hci_cp_le_conn_param_req_neg_reply cp; 5760 5761 cp.handle = cpu_to_le16(handle); 5762 cp.reason = reason; 5763 5764 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_NEG_REPLY, sizeof(cp), 5765 &cp); 5766 } 5767 5768 static void hci_le_remote_conn_param_req_evt(struct hci_dev *hdev, 5769 struct sk_buff *skb) 5770 { 5771 struct hci_ev_le_remote_conn_param_req *ev = (void *) skb->data; 5772 struct hci_cp_le_conn_param_req_reply cp; 5773 struct hci_conn *hcon; 5774 u16 handle, min, max, latency, timeout; 5775 5776 handle = le16_to_cpu(ev->handle); 5777 min = le16_to_cpu(ev->interval_min); 5778 max = le16_to_cpu(ev->interval_max); 5779 latency = le16_to_cpu(ev->latency); 5780 timeout = le16_to_cpu(ev->timeout); 5781 5782 hcon = hci_conn_hash_lookup_handle(hdev, handle); 5783 if (!hcon || hcon->state != BT_CONNECTED) 5784 return send_conn_param_neg_reply(hdev, handle, 5785 HCI_ERROR_UNKNOWN_CONN_ID); 5786 5787 if (hci_check_conn_params(min, max, latency, timeout)) 5788 return send_conn_param_neg_reply(hdev, handle, 5789 HCI_ERROR_INVALID_LL_PARAMS); 5790 5791 if (hcon->role == HCI_ROLE_MASTER) { 5792 struct hci_conn_params *params; 5793 u8 store_hint; 5794 5795 hci_dev_lock(hdev); 5796 5797 params = hci_conn_params_lookup(hdev, &hcon->dst, 5798 hcon->dst_type); 5799 if (params) { 5800 params->conn_min_interval = min; 5801 params->conn_max_interval = max; 5802 params->conn_latency = latency; 5803 params->supervision_timeout = timeout; 5804 store_hint = 0x01; 5805 } else{ 5806 store_hint = 0x00; 5807 } 5808 5809 hci_dev_unlock(hdev); 5810 5811 mgmt_new_conn_param(hdev, &hcon->dst, hcon->dst_type, 5812 store_hint, min, max, latency, timeout); 5813 } 5814 5815 cp.handle = ev->handle; 5816 cp.interval_min = ev->interval_min; 5817 cp.interval_max = ev->interval_max; 5818 cp.latency = ev->latency; 5819 cp.timeout = ev->timeout; 5820 cp.min_ce_len = 0; 5821 cp.max_ce_len = 0; 5822 5823 hci_send_cmd(hdev, HCI_OP_LE_CONN_PARAM_REQ_REPLY, sizeof(cp), &cp); 5824 } 5825 5826 static void hci_le_direct_adv_report_evt(struct hci_dev *hdev, 5827 struct sk_buff *skb) 5828 { 5829 u8 num_reports = skb->data[0]; 5830 void *ptr = &skb->data[1]; 5831 5832 hci_dev_lock(hdev); 5833 5834 while (num_reports--) { 5835 struct hci_ev_le_direct_adv_info *ev = ptr; 5836 5837 process_adv_report(hdev, ev->evt_type, &ev->bdaddr, 5838 ev->bdaddr_type, &ev->direct_addr, 5839 ev->direct_addr_type, ev->rssi, NULL, 0); 5840 5841 ptr += sizeof(*ev); 5842 } 5843 5844 hci_dev_unlock(hdev); 5845 } 5846 5847 static void hci_le_phy_update_evt(struct hci_dev *hdev, struct sk_buff *skb) 5848 { 5849 struct hci_ev_le_phy_update_complete *ev = (void *) skb->data; 5850 struct hci_conn *conn; 5851 5852 BT_DBG("%s status 0x%2.2x", hdev->name, ev->status); 5853 5854 if (!ev->status) 5855 return; 5856 5857 hci_dev_lock(hdev); 5858 5859 conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(ev->handle)); 5860 if (!conn) 5861 goto unlock; 5862 5863 conn->le_tx_phy = ev->tx_phy; 5864 conn->le_rx_phy = ev->rx_phy; 5865 5866 unlock: 5867 hci_dev_unlock(hdev); 5868 } 5869 5870 static void hci_le_meta_evt(struct hci_dev *hdev, struct sk_buff *skb) 5871 { 5872 struct hci_ev_le_meta *le_ev = (void *) skb->data; 5873 5874 skb_pull(skb, sizeof(*le_ev)); 5875 5876 switch (le_ev->subevent) { 5877 case HCI_EV_LE_CONN_COMPLETE: 5878 hci_le_conn_complete_evt(hdev, skb); 5879 break; 5880 5881 case HCI_EV_LE_CONN_UPDATE_COMPLETE: 5882 hci_le_conn_update_complete_evt(hdev, skb); 5883 break; 5884 5885 case HCI_EV_LE_ADVERTISING_REPORT: 5886 hci_le_adv_report_evt(hdev, skb); 5887 break; 5888 5889 case HCI_EV_LE_REMOTE_FEAT_COMPLETE: 5890 hci_le_remote_feat_complete_evt(hdev, skb); 5891 break; 5892 5893 case HCI_EV_LE_LTK_REQ: 5894 hci_le_ltk_request_evt(hdev, skb); 5895 break; 5896 5897 case HCI_EV_LE_REMOTE_CONN_PARAM_REQ: 5898 hci_le_remote_conn_param_req_evt(hdev, skb); 5899 break; 5900 5901 case HCI_EV_LE_DIRECT_ADV_REPORT: 5902 hci_le_direct_adv_report_evt(hdev, skb); 5903 break; 5904 5905 case HCI_EV_LE_PHY_UPDATE_COMPLETE: 5906 hci_le_phy_update_evt(hdev, skb); 5907 break; 5908 5909 case HCI_EV_LE_EXT_ADV_REPORT: 5910 hci_le_ext_adv_report_evt(hdev, skb); 5911 break; 5912 5913 case HCI_EV_LE_ENHANCED_CONN_COMPLETE: 5914 hci_le_enh_conn_complete_evt(hdev, skb); 5915 break; 5916 5917 case HCI_EV_LE_EXT_ADV_SET_TERM: 5918 hci_le_ext_adv_term_evt(hdev, skb); 5919 break; 5920 5921 default: 5922 break; 5923 } 5924 } 5925 5926 static bool hci_get_cmd_complete(struct hci_dev *hdev, u16 opcode, 5927 u8 event, struct sk_buff *skb) 5928 { 5929 struct hci_ev_cmd_complete *ev; 5930 struct hci_event_hdr *hdr; 5931 5932 if (!skb) 5933 return false; 5934 5935 if (skb->len < sizeof(*hdr)) { 5936 bt_dev_err(hdev, "too short HCI event"); 5937 return false; 5938 } 5939 5940 hdr = (void *) skb->data; 5941 skb_pull(skb, HCI_EVENT_HDR_SIZE); 5942 5943 if (event) { 5944 if (hdr->evt != event) 5945 return false; 5946 return true; 5947 } 5948 5949 /* Check if request ended in Command Status - no way to retreive 5950 * any extra parameters in this case. 5951 */ 5952 if (hdr->evt == HCI_EV_CMD_STATUS) 5953 return false; 5954 5955 if (hdr->evt != HCI_EV_CMD_COMPLETE) { 5956 bt_dev_err(hdev, "last event is not cmd complete (0x%2.2x)", 5957 hdr->evt); 5958 return false; 5959 } 5960 5961 if (skb->len < sizeof(*ev)) { 5962 bt_dev_err(hdev, "too short cmd_complete event"); 5963 return false; 5964 } 5965 5966 ev = (void *) skb->data; 5967 skb_pull(skb, sizeof(*ev)); 5968 5969 if (opcode != __le16_to_cpu(ev->opcode)) { 5970 BT_DBG("opcode doesn't match (0x%2.2x != 0x%2.2x)", opcode, 5971 __le16_to_cpu(ev->opcode)); 5972 return false; 5973 } 5974 5975 return true; 5976 } 5977 5978 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb) 5979 { 5980 struct hci_event_hdr *hdr = (void *) skb->data; 5981 hci_req_complete_t req_complete = NULL; 5982 hci_req_complete_skb_t req_complete_skb = NULL; 5983 struct sk_buff *orig_skb = NULL; 5984 u8 status = 0, event = hdr->evt, req_evt = 0; 5985 u16 opcode = HCI_OP_NOP; 5986 5987 if (!event) { 5988 bt_dev_warn(hdev, "Received unexpected HCI Event 00000000"); 5989 goto done; 5990 } 5991 5992 if (hdev->sent_cmd && bt_cb(hdev->sent_cmd)->hci.req_event == event) { 5993 struct hci_command_hdr *cmd_hdr = (void *) hdev->sent_cmd->data; 5994 opcode = __le16_to_cpu(cmd_hdr->opcode); 5995 hci_req_cmd_complete(hdev, opcode, status, &req_complete, 5996 &req_complete_skb); 5997 req_evt = event; 5998 } 5999 6000 /* If it looks like we might end up having to call 6001 * req_complete_skb, store a pristine copy of the skb since the 6002 * various handlers may modify the original one through 6003 * skb_pull() calls, etc. 6004 */ 6005 if (req_complete_skb || event == HCI_EV_CMD_STATUS || 6006 event == HCI_EV_CMD_COMPLETE) 6007 orig_skb = skb_clone(skb, GFP_KERNEL); 6008 6009 skb_pull(skb, HCI_EVENT_HDR_SIZE); 6010 6011 switch (event) { 6012 case HCI_EV_INQUIRY_COMPLETE: 6013 hci_inquiry_complete_evt(hdev, skb); 6014 break; 6015 6016 case HCI_EV_INQUIRY_RESULT: 6017 hci_inquiry_result_evt(hdev, skb); 6018 break; 6019 6020 case HCI_EV_CONN_COMPLETE: 6021 hci_conn_complete_evt(hdev, skb); 6022 break; 6023 6024 case HCI_EV_CONN_REQUEST: 6025 hci_conn_request_evt(hdev, skb); 6026 break; 6027 6028 case HCI_EV_DISCONN_COMPLETE: 6029 hci_disconn_complete_evt(hdev, skb); 6030 break; 6031 6032 case HCI_EV_AUTH_COMPLETE: 6033 hci_auth_complete_evt(hdev, skb); 6034 break; 6035 6036 case HCI_EV_REMOTE_NAME: 6037 hci_remote_name_evt(hdev, skb); 6038 break; 6039 6040 case HCI_EV_ENCRYPT_CHANGE: 6041 hci_encrypt_change_evt(hdev, skb); 6042 break; 6043 6044 case HCI_EV_CHANGE_LINK_KEY_COMPLETE: 6045 hci_change_link_key_complete_evt(hdev, skb); 6046 break; 6047 6048 case HCI_EV_REMOTE_FEATURES: 6049 hci_remote_features_evt(hdev, skb); 6050 break; 6051 6052 case HCI_EV_CMD_COMPLETE: 6053 hci_cmd_complete_evt(hdev, skb, &opcode, &status, 6054 &req_complete, &req_complete_skb); 6055 break; 6056 6057 case HCI_EV_CMD_STATUS: 6058 hci_cmd_status_evt(hdev, skb, &opcode, &status, &req_complete, 6059 &req_complete_skb); 6060 break; 6061 6062 case HCI_EV_HARDWARE_ERROR: 6063 hci_hardware_error_evt(hdev, skb); 6064 break; 6065 6066 case HCI_EV_ROLE_CHANGE: 6067 hci_role_change_evt(hdev, skb); 6068 break; 6069 6070 case HCI_EV_NUM_COMP_PKTS: 6071 hci_num_comp_pkts_evt(hdev, skb); 6072 break; 6073 6074 case HCI_EV_MODE_CHANGE: 6075 hci_mode_change_evt(hdev, skb); 6076 break; 6077 6078 case HCI_EV_PIN_CODE_REQ: 6079 hci_pin_code_request_evt(hdev, skb); 6080 break; 6081 6082 case HCI_EV_LINK_KEY_REQ: 6083 hci_link_key_request_evt(hdev, skb); 6084 break; 6085 6086 case HCI_EV_LINK_KEY_NOTIFY: 6087 hci_link_key_notify_evt(hdev, skb); 6088 break; 6089 6090 case HCI_EV_CLOCK_OFFSET: 6091 hci_clock_offset_evt(hdev, skb); 6092 break; 6093 6094 case HCI_EV_PKT_TYPE_CHANGE: 6095 hci_pkt_type_change_evt(hdev, skb); 6096 break; 6097 6098 case HCI_EV_PSCAN_REP_MODE: 6099 hci_pscan_rep_mode_evt(hdev, skb); 6100 break; 6101 6102 case HCI_EV_INQUIRY_RESULT_WITH_RSSI: 6103 hci_inquiry_result_with_rssi_evt(hdev, skb); 6104 break; 6105 6106 case HCI_EV_REMOTE_EXT_FEATURES: 6107 hci_remote_ext_features_evt(hdev, skb); 6108 break; 6109 6110 case HCI_EV_SYNC_CONN_COMPLETE: 6111 hci_sync_conn_complete_evt(hdev, skb); 6112 break; 6113 6114 case HCI_EV_EXTENDED_INQUIRY_RESULT: 6115 hci_extended_inquiry_result_evt(hdev, skb); 6116 break; 6117 6118 case HCI_EV_KEY_REFRESH_COMPLETE: 6119 hci_key_refresh_complete_evt(hdev, skb); 6120 break; 6121 6122 case HCI_EV_IO_CAPA_REQUEST: 6123 hci_io_capa_request_evt(hdev, skb); 6124 break; 6125 6126 case HCI_EV_IO_CAPA_REPLY: 6127 hci_io_capa_reply_evt(hdev, skb); 6128 break; 6129 6130 case HCI_EV_USER_CONFIRM_REQUEST: 6131 hci_user_confirm_request_evt(hdev, skb); 6132 break; 6133 6134 case HCI_EV_USER_PASSKEY_REQUEST: 6135 hci_user_passkey_request_evt(hdev, skb); 6136 break; 6137 6138 case HCI_EV_USER_PASSKEY_NOTIFY: 6139 hci_user_passkey_notify_evt(hdev, skb); 6140 break; 6141 6142 case HCI_EV_KEYPRESS_NOTIFY: 6143 hci_keypress_notify_evt(hdev, skb); 6144 break; 6145 6146 case HCI_EV_SIMPLE_PAIR_COMPLETE: 6147 hci_simple_pair_complete_evt(hdev, skb); 6148 break; 6149 6150 case HCI_EV_REMOTE_HOST_FEATURES: 6151 hci_remote_host_features_evt(hdev, skb); 6152 break; 6153 6154 case HCI_EV_LE_META: 6155 hci_le_meta_evt(hdev, skb); 6156 break; 6157 6158 case HCI_EV_REMOTE_OOB_DATA_REQUEST: 6159 hci_remote_oob_data_request_evt(hdev, skb); 6160 break; 6161 6162 #if IS_ENABLED(CONFIG_BT_HS) 6163 case HCI_EV_CHANNEL_SELECTED: 6164 hci_chan_selected_evt(hdev, skb); 6165 break; 6166 6167 case HCI_EV_PHY_LINK_COMPLETE: 6168 hci_phy_link_complete_evt(hdev, skb); 6169 break; 6170 6171 case HCI_EV_LOGICAL_LINK_COMPLETE: 6172 hci_loglink_complete_evt(hdev, skb); 6173 break; 6174 6175 case HCI_EV_DISCONN_LOGICAL_LINK_COMPLETE: 6176 hci_disconn_loglink_complete_evt(hdev, skb); 6177 break; 6178 6179 case HCI_EV_DISCONN_PHY_LINK_COMPLETE: 6180 hci_disconn_phylink_complete_evt(hdev, skb); 6181 break; 6182 #endif 6183 6184 case HCI_EV_NUM_COMP_BLOCKS: 6185 hci_num_comp_blocks_evt(hdev, skb); 6186 break; 6187 6188 case HCI_EV_VENDOR: 6189 msft_vendor_evt(hdev, skb); 6190 break; 6191 6192 default: 6193 BT_DBG("%s event 0x%2.2x", hdev->name, event); 6194 break; 6195 } 6196 6197 if (req_complete) { 6198 req_complete(hdev, status, opcode); 6199 } else if (req_complete_skb) { 6200 if (!hci_get_cmd_complete(hdev, opcode, req_evt, orig_skb)) { 6201 kfree_skb(orig_skb); 6202 orig_skb = NULL; 6203 } 6204 req_complete_skb(hdev, status, opcode, orig_skb); 6205 } 6206 6207 done: 6208 kfree_skb(orig_skb); 6209 kfree_skb(skb); 6210 hdev->stat.evt_rx++; 6211 } 6212