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