1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 Copyright 2023 NXP 5 6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License version 2 as 10 published by the Free Software Foundation; 11 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 23 SOFTWARE IS DISCLAIMED. 24 */ 25 26 #ifndef __HCI_CORE_H 27 #define __HCI_CORE_H 28 29 #include <linux/idr.h> 30 #include <linux/leds.h> 31 #include <linux/rculist.h> 32 33 #include <net/bluetooth/hci.h> 34 #include <net/bluetooth/hci_sync.h> 35 #include <net/bluetooth/hci_sock.h> 36 #include <net/bluetooth/coredump.h> 37 38 /* HCI priority */ 39 #define HCI_PRIO_MAX 7 40 41 /* HCI maximum id value */ 42 #define HCI_MAX_ID 10000 43 44 /* HCI Core structures */ 45 struct inquiry_data { 46 bdaddr_t bdaddr; 47 __u8 pscan_rep_mode; 48 __u8 pscan_period_mode; 49 __u8 pscan_mode; 50 __u8 dev_class[3]; 51 __le16 clock_offset; 52 __s8 rssi; 53 __u8 ssp_mode; 54 }; 55 56 struct inquiry_entry { 57 struct list_head all; /* inq_cache.all */ 58 struct list_head list; /* unknown or resolve */ 59 enum { 60 NAME_NOT_KNOWN, 61 NAME_NEEDED, 62 NAME_PENDING, 63 NAME_KNOWN, 64 } name_state; 65 __u32 timestamp; 66 struct inquiry_data data; 67 }; 68 69 struct discovery_state { 70 int type; 71 enum { 72 DISCOVERY_STOPPED, 73 DISCOVERY_STARTING, 74 DISCOVERY_FINDING, 75 DISCOVERY_RESOLVING, 76 DISCOVERY_STOPPING, 77 } state; 78 struct list_head all; /* All devices found during inquiry */ 79 struct list_head unknown; /* Name state not known */ 80 struct list_head resolve; /* Name needs to be resolved */ 81 __u32 timestamp; 82 bdaddr_t last_adv_addr; 83 u8 last_adv_addr_type; 84 s8 last_adv_rssi; 85 u32 last_adv_flags; 86 u8 last_adv_data[HCI_MAX_EXT_AD_LENGTH]; 87 u8 last_adv_data_len; 88 bool report_invalid_rssi; 89 bool result_filtering; 90 bool limited; 91 s8 rssi; 92 u16 uuid_count; 93 u8 (*uuids)[16]; 94 unsigned long scan_start; 95 unsigned long scan_duration; 96 unsigned long name_resolve_timeout; 97 }; 98 99 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */ 100 101 enum suspend_tasks { 102 SUSPEND_PAUSE_DISCOVERY, 103 SUSPEND_UNPAUSE_DISCOVERY, 104 105 SUSPEND_PAUSE_ADVERTISING, 106 SUSPEND_UNPAUSE_ADVERTISING, 107 108 SUSPEND_SCAN_DISABLE, 109 SUSPEND_SCAN_ENABLE, 110 SUSPEND_DISCONNECTING, 111 112 SUSPEND_POWERING_DOWN, 113 114 SUSPEND_PREPARE_NOTIFIER, 115 116 SUSPEND_SET_ADV_FILTER, 117 __SUSPEND_NUM_TASKS 118 }; 119 120 enum suspended_state { 121 BT_RUNNING = 0, 122 BT_SUSPEND_DISCONNECT, 123 BT_SUSPEND_CONFIGURE_WAKE, 124 }; 125 126 struct hci_conn_hash { 127 struct list_head list; 128 unsigned int acl_num; 129 unsigned int sco_num; 130 unsigned int iso_num; 131 unsigned int le_num; 132 unsigned int le_num_peripheral; 133 }; 134 135 struct bdaddr_list { 136 struct list_head list; 137 bdaddr_t bdaddr; 138 u8 bdaddr_type; 139 }; 140 141 struct codec_list { 142 struct list_head list; 143 u8 id; 144 __u16 cid; 145 __u16 vid; 146 u8 transport; 147 u8 num_caps; 148 u32 len; 149 struct hci_codec_caps caps[]; 150 }; 151 152 struct bdaddr_list_with_irk { 153 struct list_head list; 154 bdaddr_t bdaddr; 155 u8 bdaddr_type; 156 u8 peer_irk[16]; 157 u8 local_irk[16]; 158 }; 159 160 /* Bitmask of connection flags */ 161 enum hci_conn_flags { 162 HCI_CONN_FLAG_REMOTE_WAKEUP = 1, 163 HCI_CONN_FLAG_DEVICE_PRIVACY = 2, 164 }; 165 typedef u8 hci_conn_flags_t; 166 167 struct bdaddr_list_with_flags { 168 struct list_head list; 169 bdaddr_t bdaddr; 170 u8 bdaddr_type; 171 hci_conn_flags_t flags; 172 }; 173 174 struct bt_uuid { 175 struct list_head list; 176 u8 uuid[16]; 177 u8 size; 178 u8 svc_hint; 179 }; 180 181 struct blocked_key { 182 struct list_head list; 183 struct rcu_head rcu; 184 u8 type; 185 u8 val[16]; 186 }; 187 188 struct smp_csrk { 189 bdaddr_t bdaddr; 190 u8 bdaddr_type; 191 u8 link_type; 192 u8 type; 193 u8 val[16]; 194 }; 195 196 struct smp_ltk { 197 struct list_head list; 198 struct rcu_head rcu; 199 bdaddr_t bdaddr; 200 u8 bdaddr_type; 201 u8 link_type; 202 u8 authenticated; 203 u8 type; 204 u8 enc_size; 205 __le16 ediv; 206 __le64 rand; 207 u8 val[16]; 208 }; 209 210 struct smp_irk { 211 struct list_head list; 212 struct rcu_head rcu; 213 bdaddr_t rpa; 214 bdaddr_t bdaddr; 215 u8 addr_type; 216 u8 link_type; 217 u8 val[16]; 218 }; 219 220 struct link_key { 221 struct list_head list; 222 struct rcu_head rcu; 223 bdaddr_t bdaddr; 224 u8 bdaddr_type; 225 u8 link_type; 226 u8 type; 227 u8 val[HCI_LINK_KEY_SIZE]; 228 u8 pin_len; 229 }; 230 231 struct oob_data { 232 struct list_head list; 233 bdaddr_t bdaddr; 234 u8 bdaddr_type; 235 u8 present; 236 u8 hash192[16]; 237 u8 rand192[16]; 238 u8 hash256[16]; 239 u8 rand256[16]; 240 }; 241 242 struct adv_info { 243 struct list_head list; 244 bool enabled; 245 bool pending; 246 bool periodic; 247 __u8 mesh; 248 __u8 instance; 249 __u32 flags; 250 __u16 timeout; 251 __u16 remaining_time; 252 __u16 duration; 253 __u16 adv_data_len; 254 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 255 bool adv_data_changed; 256 __u16 scan_rsp_len; 257 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 258 bool scan_rsp_changed; 259 __u16 per_adv_data_len; 260 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 261 __s8 tx_power; 262 __u32 min_interval; 263 __u32 max_interval; 264 bdaddr_t random_addr; 265 bool rpa_expired; 266 struct delayed_work rpa_expired_cb; 267 }; 268 269 #define HCI_MAX_ADV_INSTANCES 5 270 #define HCI_DEFAULT_ADV_DURATION 2 271 272 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F 273 274 #define DATA_CMP(_d1, _l1, _d2, _l2) \ 275 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2) 276 277 #define ADV_DATA_CMP(_adv, _data, _len) \ 278 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len) 279 280 #define SCAN_RSP_CMP(_adv, _data, _len) \ 281 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len) 282 283 struct monitored_device { 284 struct list_head list; 285 286 bdaddr_t bdaddr; 287 __u8 addr_type; 288 __u16 handle; 289 bool notified; 290 }; 291 292 struct adv_pattern { 293 struct list_head list; 294 __u8 ad_type; 295 __u8 offset; 296 __u8 length; 297 __u8 value[HCI_MAX_EXT_AD_LENGTH]; 298 }; 299 300 struct adv_rssi_thresholds { 301 __s8 low_threshold; 302 __s8 high_threshold; 303 __u16 low_threshold_timeout; 304 __u16 high_threshold_timeout; 305 __u8 sampling_period; 306 }; 307 308 struct adv_monitor { 309 struct list_head patterns; 310 struct adv_rssi_thresholds rssi; 311 __u16 handle; 312 313 enum { 314 ADV_MONITOR_STATE_NOT_REGISTERED, 315 ADV_MONITOR_STATE_REGISTERED, 316 ADV_MONITOR_STATE_OFFLOADED 317 } state; 318 }; 319 320 #define HCI_MIN_ADV_MONITOR_HANDLE 1 321 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32 322 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16 323 #define HCI_ADV_MONITOR_EXT_NONE 1 324 #define HCI_ADV_MONITOR_EXT_MSFT 2 325 326 #define HCI_MAX_SHORT_NAME_LENGTH 10 327 328 #define HCI_CONN_HANDLE_MAX 0x0eff 329 #define HCI_CONN_HANDLE_UNSET(_handle) (_handle > HCI_CONN_HANDLE_MAX) 330 331 /* Min encryption key size to match with SMP */ 332 #define HCI_MIN_ENC_KEY_SIZE 7 333 334 /* Default LE RPA expiry time, 15 minutes */ 335 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 336 337 /* Default min/max age of connection information (1s/3s) */ 338 #define DEFAULT_CONN_INFO_MIN_AGE 1000 339 #define DEFAULT_CONN_INFO_MAX_AGE 3000 340 /* Default authenticated payload timeout 30s */ 341 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8 342 343 #define HCI_MAX_PAGES 3 344 345 struct hci_dev { 346 struct list_head list; 347 struct mutex lock; 348 349 struct ida unset_handle_ida; 350 351 const char *name; 352 unsigned long flags; 353 __u16 id; 354 __u8 bus; 355 bdaddr_t bdaddr; 356 bdaddr_t setup_addr; 357 bdaddr_t public_addr; 358 bdaddr_t random_addr; 359 bdaddr_t static_addr; 360 __u8 adv_addr_type; 361 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 362 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 363 __u8 eir[HCI_MAX_EIR_LENGTH]; 364 __u16 appearance; 365 __u8 dev_class[3]; 366 __u8 major_class; 367 __u8 minor_class; 368 __u8 max_page; 369 __u8 features[HCI_MAX_PAGES][8]; 370 __u8 le_features[8]; 371 __u8 le_accept_list_size; 372 __u8 le_resolv_list_size; 373 __u8 le_num_of_adv_sets; 374 __u8 le_states[8]; 375 __u8 mesh_ad_types[16]; 376 __u8 mesh_send_ref; 377 __u8 commands[64]; 378 __u8 hci_ver; 379 __u16 hci_rev; 380 __u8 lmp_ver; 381 __u16 manufacturer; 382 __u16 lmp_subver; 383 __u16 voice_setting; 384 __u8 num_iac; 385 __u16 stored_max_keys; 386 __u16 stored_num_keys; 387 __u8 io_capability; 388 __s8 inq_tx_power; 389 __u8 err_data_reporting; 390 __u16 page_scan_interval; 391 __u16 page_scan_window; 392 __u8 page_scan_type; 393 __u8 le_adv_channel_map; 394 __u16 le_adv_min_interval; 395 __u16 le_adv_max_interval; 396 __u8 le_scan_type; 397 __u16 le_scan_interval; 398 __u16 le_scan_window; 399 __u16 le_scan_int_suspend; 400 __u16 le_scan_window_suspend; 401 __u16 le_scan_int_discovery; 402 __u16 le_scan_window_discovery; 403 __u16 le_scan_int_adv_monitor; 404 __u16 le_scan_window_adv_monitor; 405 __u16 le_scan_int_connect; 406 __u16 le_scan_window_connect; 407 __u16 le_conn_min_interval; 408 __u16 le_conn_max_interval; 409 __u16 le_conn_latency; 410 __u16 le_supv_timeout; 411 __u16 le_def_tx_len; 412 __u16 le_def_tx_time; 413 __u16 le_max_tx_len; 414 __u16 le_max_tx_time; 415 __u16 le_max_rx_len; 416 __u16 le_max_rx_time; 417 __u8 le_max_key_size; 418 __u8 le_min_key_size; 419 __u16 discov_interleaved_timeout; 420 __u16 conn_info_min_age; 421 __u16 conn_info_max_age; 422 __u16 auth_payload_timeout; 423 __u8 min_enc_key_size; 424 __u8 max_enc_key_size; 425 __u8 pairing_opts; 426 __u8 ssp_debug_mode; 427 __u8 hw_error_code; 428 __u32 clock; 429 __u16 advmon_allowlist_duration; 430 __u16 advmon_no_filter_duration; 431 __u8 enable_advmon_interleave_scan; 432 433 __u16 devid_source; 434 __u16 devid_vendor; 435 __u16 devid_product; 436 __u16 devid_version; 437 438 __u8 def_page_scan_type; 439 __u16 def_page_scan_int; 440 __u16 def_page_scan_window; 441 __u8 def_inq_scan_type; 442 __u16 def_inq_scan_int; 443 __u16 def_inq_scan_window; 444 __u16 def_br_lsto; 445 __u16 def_page_timeout; 446 __u16 def_multi_adv_rotation_duration; 447 __u16 def_le_autoconnect_timeout; 448 __s8 min_le_tx_power; 449 __s8 max_le_tx_power; 450 451 __u16 pkt_type; 452 __u16 esco_type; 453 __u16 link_policy; 454 __u16 link_mode; 455 456 __u32 idle_timeout; 457 __u16 sniff_min_interval; 458 __u16 sniff_max_interval; 459 460 unsigned int auto_accept_delay; 461 462 unsigned long quirks; 463 464 atomic_t cmd_cnt; 465 unsigned int acl_cnt; 466 unsigned int sco_cnt; 467 unsigned int le_cnt; 468 unsigned int iso_cnt; 469 470 unsigned int acl_mtu; 471 unsigned int sco_mtu; 472 unsigned int le_mtu; 473 unsigned int iso_mtu; 474 unsigned int acl_pkts; 475 unsigned int sco_pkts; 476 unsigned int le_pkts; 477 unsigned int iso_pkts; 478 479 unsigned long acl_last_tx; 480 unsigned long sco_last_tx; 481 unsigned long le_last_tx; 482 483 __u8 le_tx_def_phys; 484 __u8 le_rx_def_phys; 485 486 struct workqueue_struct *workqueue; 487 struct workqueue_struct *req_workqueue; 488 489 struct work_struct power_on; 490 struct delayed_work power_off; 491 struct work_struct error_reset; 492 struct work_struct cmd_sync_work; 493 struct list_head cmd_sync_work_list; 494 struct mutex cmd_sync_work_lock; 495 struct mutex unregister_lock; 496 struct work_struct cmd_sync_cancel_work; 497 struct work_struct reenable_adv_work; 498 499 __u16 discov_timeout; 500 struct delayed_work discov_off; 501 502 struct delayed_work service_cache; 503 504 struct delayed_work cmd_timer; 505 struct delayed_work ncmd_timer; 506 507 struct work_struct rx_work; 508 struct work_struct cmd_work; 509 struct work_struct tx_work; 510 511 struct delayed_work le_scan_disable; 512 struct delayed_work le_scan_restart; 513 514 struct sk_buff_head rx_q; 515 struct sk_buff_head raw_q; 516 struct sk_buff_head cmd_q; 517 518 struct sk_buff *sent_cmd; 519 struct sk_buff *recv_event; 520 521 struct mutex req_lock; 522 wait_queue_head_t req_wait_q; 523 __u32 req_status; 524 __u32 req_result; 525 struct sk_buff *req_skb; 526 struct sk_buff *req_rsp; 527 528 void *smp_data; 529 void *smp_bredr_data; 530 531 struct discovery_state discovery; 532 533 int discovery_old_state; 534 bool discovery_paused; 535 int advertising_old_state; 536 bool advertising_paused; 537 538 struct notifier_block suspend_notifier; 539 enum suspended_state suspend_state_next; 540 enum suspended_state suspend_state; 541 bool scanning_paused; 542 bool suspended; 543 u8 wake_reason; 544 bdaddr_t wake_addr; 545 u8 wake_addr_type; 546 547 struct hci_conn_hash conn_hash; 548 549 struct list_head mesh_pending; 550 struct list_head mgmt_pending; 551 struct list_head reject_list; 552 struct list_head accept_list; 553 struct list_head uuids; 554 struct list_head link_keys; 555 struct list_head long_term_keys; 556 struct list_head identity_resolving_keys; 557 struct list_head remote_oob_data; 558 struct list_head le_accept_list; 559 struct list_head le_resolv_list; 560 struct list_head le_conn_params; 561 struct list_head pend_le_conns; 562 struct list_head pend_le_reports; 563 struct list_head blocked_keys; 564 struct list_head local_codecs; 565 566 struct hci_dev_stats stat; 567 568 atomic_t promisc; 569 570 const char *hw_info; 571 const char *fw_info; 572 struct dentry *debugfs; 573 574 struct hci_devcoredump dump; 575 576 struct device dev; 577 578 struct rfkill *rfkill; 579 580 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 581 hci_conn_flags_t conn_flags; 582 583 __s8 adv_tx_power; 584 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 585 __u8 adv_data_len; 586 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 587 __u8 scan_rsp_data_len; 588 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 589 __u8 per_adv_data_len; 590 591 struct list_head adv_instances; 592 unsigned int adv_instance_cnt; 593 __u8 cur_adv_instance; 594 __u16 adv_instance_timeout; 595 struct delayed_work adv_instance_expire; 596 597 struct idr adv_monitors_idr; 598 unsigned int adv_monitors_cnt; 599 600 __u8 irk[16]; 601 __u32 rpa_timeout; 602 struct delayed_work rpa_expired; 603 bdaddr_t rpa; 604 605 struct delayed_work mesh_send_done; 606 607 enum { 608 INTERLEAVE_SCAN_NONE, 609 INTERLEAVE_SCAN_NO_FILTER, 610 INTERLEAVE_SCAN_ALLOWLIST 611 } interleave_scan_state; 612 613 struct delayed_work interleave_scan; 614 615 struct list_head monitored_devices; 616 bool advmon_pend_notify; 617 618 #if IS_ENABLED(CONFIG_BT_LEDS) 619 struct led_trigger *power_led; 620 #endif 621 622 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 623 __u16 msft_opcode; 624 void *msft_data; 625 bool msft_curve_validity; 626 #endif 627 628 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 629 bool aosp_capable; 630 bool aosp_quality_report; 631 #endif 632 633 int (*open)(struct hci_dev *hdev); 634 int (*close)(struct hci_dev *hdev); 635 int (*flush)(struct hci_dev *hdev); 636 int (*setup)(struct hci_dev *hdev); 637 int (*shutdown)(struct hci_dev *hdev); 638 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 639 void (*notify)(struct hci_dev *hdev, unsigned int evt); 640 void (*hw_error)(struct hci_dev *hdev, u8 code); 641 int (*post_init)(struct hci_dev *hdev); 642 int (*set_diag)(struct hci_dev *hdev, bool enable); 643 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 644 void (*cmd_timeout)(struct hci_dev *hdev); 645 void (*reset)(struct hci_dev *hdev); 646 bool (*wakeup)(struct hci_dev *hdev); 647 int (*set_quality_report)(struct hci_dev *hdev, bool enable); 648 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path); 649 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type, 650 struct bt_codec *codec, __u8 *vnd_len, 651 __u8 **vnd_data); 652 }; 653 654 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 655 656 enum conn_reasons { 657 CONN_REASON_PAIR_DEVICE, 658 CONN_REASON_L2CAP_CHAN, 659 CONN_REASON_SCO_CONNECT, 660 CONN_REASON_ISO_CONNECT, 661 }; 662 663 struct hci_conn { 664 struct list_head list; 665 666 atomic_t refcnt; 667 668 bdaddr_t dst; 669 __u8 dst_type; 670 bdaddr_t src; 671 __u8 src_type; 672 bdaddr_t init_addr; 673 __u8 init_addr_type; 674 bdaddr_t resp_addr; 675 __u8 resp_addr_type; 676 __u8 adv_instance; 677 __u16 handle; 678 __u16 sync_handle; 679 __u16 state; 680 __u16 mtu; 681 __u8 mode; 682 __u8 type; 683 __u8 role; 684 bool out; 685 __u8 attempt; 686 __u8 dev_class[3]; 687 __u8 features[HCI_MAX_PAGES][8]; 688 __u16 pkt_type; 689 __u16 link_policy; 690 __u8 key_type; 691 __u8 auth_type; 692 __u8 sec_level; 693 __u8 pending_sec_level; 694 __u8 pin_length; 695 __u8 enc_key_size; 696 __u8 io_capability; 697 __u32 passkey_notify; 698 __u8 passkey_entered; 699 __u16 disc_timeout; 700 __u16 conn_timeout; 701 __u16 setting; 702 __u16 auth_payload_timeout; 703 __u16 le_conn_min_interval; 704 __u16 le_conn_max_interval; 705 __u16 le_conn_interval; 706 __u16 le_conn_latency; 707 __u16 le_supv_timeout; 708 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH]; 709 __u8 le_adv_data_len; 710 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH]; 711 __u8 le_per_adv_data_len; 712 __u8 le_tx_phy; 713 __u8 le_rx_phy; 714 __s8 rssi; 715 __s8 tx_power; 716 __s8 max_tx_power; 717 struct bt_iso_qos iso_qos; 718 unsigned long flags; 719 720 enum conn_reasons conn_reason; 721 __u8 abort_reason; 722 723 __u32 clock; 724 __u16 clock_accuracy; 725 726 unsigned long conn_info_timestamp; 727 728 __u8 remote_cap; 729 __u8 remote_auth; 730 __u8 remote_id; 731 732 unsigned int sent; 733 734 struct sk_buff_head data_q; 735 struct list_head chan_list; 736 737 struct delayed_work disc_work; 738 struct delayed_work auto_accept_work; 739 struct delayed_work idle_work; 740 struct delayed_work le_conn_timeout; 741 742 struct device dev; 743 struct dentry *debugfs; 744 745 struct hci_dev *hdev; 746 void *l2cap_data; 747 void *sco_data; 748 void *iso_data; 749 750 struct list_head link_list; 751 struct hci_conn *parent; 752 struct hci_link *link; 753 754 struct bt_codec codec; 755 756 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 757 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 758 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 759 760 void (*cleanup)(struct hci_conn *conn); 761 }; 762 763 struct hci_link { 764 struct list_head list; 765 struct hci_conn *conn; 766 }; 767 768 struct hci_chan { 769 struct list_head list; 770 __u16 handle; 771 struct hci_conn *conn; 772 struct sk_buff_head data_q; 773 unsigned int sent; 774 __u8 state; 775 }; 776 777 struct hci_conn_params { 778 struct list_head list; 779 struct list_head action; 780 781 bdaddr_t addr; 782 u8 addr_type; 783 784 u16 conn_min_interval; 785 u16 conn_max_interval; 786 u16 conn_latency; 787 u16 supervision_timeout; 788 789 enum { 790 HCI_AUTO_CONN_DISABLED, 791 HCI_AUTO_CONN_REPORT, 792 HCI_AUTO_CONN_DIRECT, 793 HCI_AUTO_CONN_ALWAYS, 794 HCI_AUTO_CONN_LINK_LOSS, 795 HCI_AUTO_CONN_EXPLICIT, 796 } auto_connect; 797 798 struct hci_conn *conn; 799 bool explicit_connect; 800 /* Accessed without hdev->lock: */ 801 hci_conn_flags_t flags; 802 u8 privacy_mode; 803 }; 804 805 extern struct list_head hci_dev_list; 806 extern struct list_head hci_cb_list; 807 extern rwlock_t hci_dev_list_lock; 808 extern struct mutex hci_cb_list_lock; 809 810 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 811 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 812 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 813 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 814 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 815 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 816 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 817 818 #define hci_dev_clear_volatile_flags(hdev) \ 819 do { \ 820 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 821 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 822 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\ 823 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 824 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \ 825 } while (0) 826 827 #define hci_dev_le_state_simultaneous(hdev) \ 828 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \ 829 (hdev->le_states[4] & 0x08) && /* Central */ \ 830 (hdev->le_states[4] & 0x40) && /* Peripheral */ \ 831 (hdev->le_states[3] & 0x10)) /* Simultaneous */ 832 833 /* ----- HCI interface to upper protocols ----- */ 834 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 835 int l2cap_disconn_ind(struct hci_conn *hcon); 836 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 837 838 #if IS_ENABLED(CONFIG_BT_BREDR) 839 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 840 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 841 #else 842 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 843 __u8 *flags) 844 { 845 return 0; 846 } 847 848 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 849 { 850 } 851 #endif 852 853 #if IS_ENABLED(CONFIG_BT_LE) 854 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 855 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 856 #else 857 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 858 __u8 *flags) 859 { 860 return 0; 861 } 862 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, 863 u16 flags) 864 { 865 } 866 #endif 867 868 /* ----- Inquiry cache ----- */ 869 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 870 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 871 872 static inline void discovery_init(struct hci_dev *hdev) 873 { 874 hdev->discovery.state = DISCOVERY_STOPPED; 875 INIT_LIST_HEAD(&hdev->discovery.all); 876 INIT_LIST_HEAD(&hdev->discovery.unknown); 877 INIT_LIST_HEAD(&hdev->discovery.resolve); 878 hdev->discovery.report_invalid_rssi = true; 879 hdev->discovery.rssi = HCI_RSSI_INVALID; 880 } 881 882 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 883 { 884 hdev->discovery.result_filtering = false; 885 hdev->discovery.report_invalid_rssi = true; 886 hdev->discovery.rssi = HCI_RSSI_INVALID; 887 hdev->discovery.uuid_count = 0; 888 kfree(hdev->discovery.uuids); 889 hdev->discovery.uuids = NULL; 890 hdev->discovery.scan_start = 0; 891 hdev->discovery.scan_duration = 0; 892 } 893 894 bool hci_discovery_active(struct hci_dev *hdev); 895 896 void hci_discovery_set_state(struct hci_dev *hdev, int state); 897 898 static inline int inquiry_cache_empty(struct hci_dev *hdev) 899 { 900 return list_empty(&hdev->discovery.all); 901 } 902 903 static inline long inquiry_cache_age(struct hci_dev *hdev) 904 { 905 struct discovery_state *c = &hdev->discovery; 906 return jiffies - c->timestamp; 907 } 908 909 static inline long inquiry_entry_age(struct inquiry_entry *e) 910 { 911 return jiffies - e->timestamp; 912 } 913 914 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 915 bdaddr_t *bdaddr); 916 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 917 bdaddr_t *bdaddr); 918 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 919 bdaddr_t *bdaddr, 920 int state); 921 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 922 struct inquiry_entry *ie); 923 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 924 bool name_known); 925 void hci_inquiry_cache_flush(struct hci_dev *hdev); 926 927 /* ----- HCI Connections ----- */ 928 enum { 929 HCI_CONN_AUTH_PEND, 930 HCI_CONN_ENCRYPT_PEND, 931 HCI_CONN_RSWITCH_PEND, 932 HCI_CONN_MODE_CHANGE_PEND, 933 HCI_CONN_SCO_SETUP_PEND, 934 HCI_CONN_MGMT_CONNECTED, 935 HCI_CONN_SSP_ENABLED, 936 HCI_CONN_SC_ENABLED, 937 HCI_CONN_AES_CCM, 938 HCI_CONN_POWER_SAVE, 939 HCI_CONN_FLUSH_KEY, 940 HCI_CONN_ENCRYPT, 941 HCI_CONN_AUTH, 942 HCI_CONN_SECURE, 943 HCI_CONN_FIPS, 944 HCI_CONN_STK_ENCRYPT, 945 HCI_CONN_AUTH_INITIATOR, 946 HCI_CONN_DROP, 947 HCI_CONN_CANCEL, 948 HCI_CONN_PARAM_REMOVAL_PEND, 949 HCI_CONN_NEW_LINK_KEY, 950 HCI_CONN_SCANNING, 951 HCI_CONN_AUTH_FAILURE, 952 HCI_CONN_PER_ADV, 953 HCI_CONN_BIG_CREATED, 954 HCI_CONN_CREATE_CIS, 955 HCI_CONN_BIG_SYNC, 956 HCI_CONN_BIG_SYNC_FAILED, 957 HCI_CONN_PA_SYNC, 958 HCI_CONN_PA_SYNC_FAILED, 959 }; 960 961 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 962 { 963 struct hci_dev *hdev = conn->hdev; 964 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 965 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 966 } 967 968 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 969 { 970 struct hci_dev *hdev = conn->hdev; 971 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 972 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 973 } 974 975 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 976 { 977 struct hci_conn_hash *h = &hdev->conn_hash; 978 list_add_tail_rcu(&c->list, &h->list); 979 switch (c->type) { 980 case ACL_LINK: 981 h->acl_num++; 982 break; 983 case LE_LINK: 984 h->le_num++; 985 if (c->role == HCI_ROLE_SLAVE) 986 h->le_num_peripheral++; 987 break; 988 case SCO_LINK: 989 case ESCO_LINK: 990 h->sco_num++; 991 break; 992 case ISO_LINK: 993 h->iso_num++; 994 break; 995 } 996 } 997 998 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 999 { 1000 struct hci_conn_hash *h = &hdev->conn_hash; 1001 1002 list_del_rcu(&c->list); 1003 synchronize_rcu(); 1004 1005 switch (c->type) { 1006 case ACL_LINK: 1007 h->acl_num--; 1008 break; 1009 case LE_LINK: 1010 h->le_num--; 1011 if (c->role == HCI_ROLE_SLAVE) 1012 h->le_num_peripheral--; 1013 break; 1014 case SCO_LINK: 1015 case ESCO_LINK: 1016 h->sco_num--; 1017 break; 1018 case ISO_LINK: 1019 h->iso_num--; 1020 break; 1021 } 1022 } 1023 1024 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 1025 { 1026 struct hci_conn_hash *h = &hdev->conn_hash; 1027 switch (type) { 1028 case ACL_LINK: 1029 return h->acl_num; 1030 case LE_LINK: 1031 return h->le_num; 1032 case SCO_LINK: 1033 case ESCO_LINK: 1034 return h->sco_num; 1035 case ISO_LINK: 1036 return h->iso_num; 1037 default: 1038 return 0; 1039 } 1040 } 1041 1042 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 1043 { 1044 struct hci_conn_hash *c = &hdev->conn_hash; 1045 1046 return c->acl_num + c->sco_num + c->le_num + c->iso_num; 1047 } 1048 1049 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 1050 { 1051 struct hci_conn_hash *h = &hdev->conn_hash; 1052 struct hci_conn *c; 1053 __u8 type = INVALID_LINK; 1054 1055 rcu_read_lock(); 1056 1057 list_for_each_entry_rcu(c, &h->list, list) { 1058 if (c->handle == handle) { 1059 type = c->type; 1060 break; 1061 } 1062 } 1063 1064 rcu_read_unlock(); 1065 1066 return type; 1067 } 1068 1069 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev, 1070 bdaddr_t *ba, __u8 bis) 1071 { 1072 struct hci_conn_hash *h = &hdev->conn_hash; 1073 struct hci_conn *c; 1074 1075 rcu_read_lock(); 1076 1077 list_for_each_entry_rcu(c, &h->list, list) { 1078 if (bacmp(&c->dst, ba) || c->type != ISO_LINK) 1079 continue; 1080 1081 if (c->iso_qos.bcast.bis == bis) { 1082 rcu_read_unlock(); 1083 return c; 1084 } 1085 } 1086 rcu_read_unlock(); 1087 1088 return NULL; 1089 } 1090 1091 static inline struct hci_conn * 1092 hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev, 1093 bdaddr_t *ba, 1094 __u8 big, __u8 bis) 1095 { 1096 struct hci_conn_hash *h = &hdev->conn_hash; 1097 struct hci_conn *c; 1098 1099 rcu_read_lock(); 1100 1101 list_for_each_entry_rcu(c, &h->list, list) { 1102 if (bacmp(&c->dst, ba) || c->type != ISO_LINK || 1103 !test_bit(HCI_CONN_PER_ADV, &c->flags)) 1104 continue; 1105 1106 if (c->iso_qos.bcast.big == big && 1107 c->iso_qos.bcast.bis == bis) { 1108 rcu_read_unlock(); 1109 return c; 1110 } 1111 } 1112 rcu_read_unlock(); 1113 1114 return NULL; 1115 } 1116 1117 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 1118 __u16 handle) 1119 { 1120 struct hci_conn_hash *h = &hdev->conn_hash; 1121 struct hci_conn *c; 1122 1123 rcu_read_lock(); 1124 1125 list_for_each_entry_rcu(c, &h->list, list) { 1126 if (c->handle == handle) { 1127 rcu_read_unlock(); 1128 return c; 1129 } 1130 } 1131 rcu_read_unlock(); 1132 1133 return NULL; 1134 } 1135 1136 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 1137 __u8 type, bdaddr_t *ba) 1138 { 1139 struct hci_conn_hash *h = &hdev->conn_hash; 1140 struct hci_conn *c; 1141 1142 rcu_read_lock(); 1143 1144 list_for_each_entry_rcu(c, &h->list, list) { 1145 if (c->type == type && !bacmp(&c->dst, ba)) { 1146 rcu_read_unlock(); 1147 return c; 1148 } 1149 } 1150 1151 rcu_read_unlock(); 1152 1153 return NULL; 1154 } 1155 1156 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 1157 bdaddr_t *ba, 1158 __u8 ba_type) 1159 { 1160 struct hci_conn_hash *h = &hdev->conn_hash; 1161 struct hci_conn *c; 1162 1163 rcu_read_lock(); 1164 1165 list_for_each_entry_rcu(c, &h->list, list) { 1166 if (c->type != LE_LINK) 1167 continue; 1168 1169 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1170 rcu_read_unlock(); 1171 return c; 1172 } 1173 } 1174 1175 rcu_read_unlock(); 1176 1177 return NULL; 1178 } 1179 1180 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev, 1181 bdaddr_t *ba, 1182 __u8 ba_type, 1183 __u8 cig, 1184 __u8 id) 1185 { 1186 struct hci_conn_hash *h = &hdev->conn_hash; 1187 struct hci_conn *c; 1188 1189 rcu_read_lock(); 1190 1191 list_for_each_entry_rcu(c, &h->list, list) { 1192 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY)) 1193 continue; 1194 1195 /* Match CIG ID if set */ 1196 if (cig != c->iso_qos.ucast.cig) 1197 continue; 1198 1199 /* Match CIS ID if set */ 1200 if (id != c->iso_qos.ucast.cis) 1201 continue; 1202 1203 /* Match destination address if set */ 1204 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) { 1205 rcu_read_unlock(); 1206 return c; 1207 } 1208 } 1209 1210 rcu_read_unlock(); 1211 1212 return NULL; 1213 } 1214 1215 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev, 1216 __u8 handle) 1217 { 1218 struct hci_conn_hash *h = &hdev->conn_hash; 1219 struct hci_conn *c; 1220 1221 rcu_read_lock(); 1222 1223 list_for_each_entry_rcu(c, &h->list, list) { 1224 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY)) 1225 continue; 1226 1227 if (handle == c->iso_qos.ucast.cig) { 1228 rcu_read_unlock(); 1229 return c; 1230 } 1231 } 1232 1233 rcu_read_unlock(); 1234 1235 return NULL; 1236 } 1237 1238 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev, 1239 __u8 handle) 1240 { 1241 struct hci_conn_hash *h = &hdev->conn_hash; 1242 struct hci_conn *c; 1243 1244 rcu_read_lock(); 1245 1246 list_for_each_entry_rcu(c, &h->list, list) { 1247 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK) 1248 continue; 1249 1250 if (handle == c->iso_qos.bcast.big) { 1251 rcu_read_unlock(); 1252 return c; 1253 } 1254 } 1255 1256 rcu_read_unlock(); 1257 1258 return NULL; 1259 } 1260 1261 static inline struct hci_conn *hci_conn_hash_lookup_big_any_dst(struct hci_dev *hdev, 1262 __u8 handle) 1263 { 1264 struct hci_conn_hash *h = &hdev->conn_hash; 1265 struct hci_conn *c; 1266 1267 rcu_read_lock(); 1268 1269 list_for_each_entry_rcu(c, &h->list, list) { 1270 if (c->type != ISO_LINK) 1271 continue; 1272 1273 if (handle != BT_ISO_QOS_BIG_UNSET && handle == c->iso_qos.bcast.big) { 1274 rcu_read_unlock(); 1275 return c; 1276 } 1277 } 1278 1279 rcu_read_unlock(); 1280 1281 return NULL; 1282 } 1283 1284 static inline struct hci_conn * 1285 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big) 1286 { 1287 struct hci_conn_hash *h = &hdev->conn_hash; 1288 struct hci_conn *c; 1289 1290 rcu_read_lock(); 1291 1292 list_for_each_entry_rcu(c, &h->list, list) { 1293 if (c->type != ISO_LINK || 1294 !test_bit(HCI_CONN_PA_SYNC, &c->flags)) 1295 continue; 1296 1297 if (c->iso_qos.bcast.big == big) { 1298 rcu_read_unlock(); 1299 return c; 1300 } 1301 } 1302 rcu_read_unlock(); 1303 1304 return NULL; 1305 } 1306 1307 static inline struct hci_conn * 1308 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle) 1309 { 1310 struct hci_conn_hash *h = &hdev->conn_hash; 1311 struct hci_conn *c; 1312 1313 rcu_read_lock(); 1314 1315 list_for_each_entry_rcu(c, &h->list, list) { 1316 if (c->type != ISO_LINK || 1317 !test_bit(HCI_CONN_PA_SYNC, &c->flags)) 1318 continue; 1319 1320 if (c->sync_handle == sync_handle) { 1321 rcu_read_unlock(); 1322 return c; 1323 } 1324 } 1325 rcu_read_unlock(); 1326 1327 return NULL; 1328 } 1329 1330 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 1331 __u8 type, __u16 state) 1332 { 1333 struct hci_conn_hash *h = &hdev->conn_hash; 1334 struct hci_conn *c; 1335 1336 rcu_read_lock(); 1337 1338 list_for_each_entry_rcu(c, &h->list, list) { 1339 if (c->type == type && c->state == state) { 1340 rcu_read_unlock(); 1341 return c; 1342 } 1343 } 1344 1345 rcu_read_unlock(); 1346 1347 return NULL; 1348 } 1349 1350 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data); 1351 static inline void hci_conn_hash_list_state(struct hci_dev *hdev, 1352 hci_conn_func_t func, __u8 type, 1353 __u16 state, void *data) 1354 { 1355 struct hci_conn_hash *h = &hdev->conn_hash; 1356 struct hci_conn *c; 1357 1358 if (!func) 1359 return; 1360 1361 rcu_read_lock(); 1362 1363 list_for_each_entry_rcu(c, &h->list, list) { 1364 if (c->type == type && c->state == state) 1365 func(c, data); 1366 } 1367 1368 rcu_read_unlock(); 1369 } 1370 1371 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 1372 { 1373 struct hci_conn_hash *h = &hdev->conn_hash; 1374 struct hci_conn *c; 1375 1376 rcu_read_lock(); 1377 1378 list_for_each_entry_rcu(c, &h->list, list) { 1379 if (c->type == LE_LINK && c->state == BT_CONNECT && 1380 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 1381 rcu_read_unlock(); 1382 return c; 1383 } 1384 } 1385 1386 rcu_read_unlock(); 1387 1388 return NULL; 1389 } 1390 1391 /* Returns true if an le connection is in the scanning state */ 1392 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev) 1393 { 1394 struct hci_conn_hash *h = &hdev->conn_hash; 1395 struct hci_conn *c; 1396 1397 rcu_read_lock(); 1398 1399 list_for_each_entry_rcu(c, &h->list, list) { 1400 if (c->type == LE_LINK && c->state == BT_CONNECT && 1401 test_bit(HCI_CONN_SCANNING, &c->flags)) { 1402 rcu_read_unlock(); 1403 return true; 1404 } 1405 } 1406 1407 rcu_read_unlock(); 1408 1409 return false; 1410 } 1411 1412 int hci_disconnect(struct hci_conn *conn, __u8 reason); 1413 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 1414 void hci_sco_setup(struct hci_conn *conn, __u8 status); 1415 bool hci_iso_setup_path(struct hci_conn *conn); 1416 int hci_le_create_cis_pending(struct hci_dev *hdev); 1417 int hci_conn_check_create_cis(struct hci_conn *conn); 1418 1419 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 1420 u8 role, u16 handle); 1421 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type, 1422 bdaddr_t *dst, u8 role); 1423 void hci_conn_del(struct hci_conn *conn); 1424 void hci_conn_hash_flush(struct hci_dev *hdev); 1425 void hci_conn_check_pending(struct hci_dev *hdev); 1426 1427 struct hci_chan *hci_chan_create(struct hci_conn *conn); 1428 void hci_chan_del(struct hci_chan *chan); 1429 void hci_chan_list_flush(struct hci_conn *conn); 1430 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 1431 1432 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 1433 u8 dst_type, u8 sec_level, 1434 u16 conn_timeout, 1435 enum conn_reasons conn_reason); 1436 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 1437 u8 dst_type, bool dst_resolved, u8 sec_level, 1438 u16 conn_timeout, u8 role); 1439 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 1440 u8 sec_level, u8 auth_type, 1441 enum conn_reasons conn_reason); 1442 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 1443 __u16 setting, struct bt_codec *codec); 1444 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, 1445 __u8 dst_type, struct bt_iso_qos *qos); 1446 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst, 1447 struct bt_iso_qos *qos, 1448 __u8 base_len, __u8 *base); 1449 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, 1450 __u8 dst_type, struct bt_iso_qos *qos); 1451 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, 1452 __u8 dst_type, struct bt_iso_qos *qos, 1453 __u8 data_len, __u8 *data); 1454 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, 1455 __u8 sid, struct bt_iso_qos *qos); 1456 int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon, 1457 struct bt_iso_qos *qos, 1458 __u16 sync_handle, __u8 num_bis, __u8 bis[]); 1459 int hci_conn_check_link_mode(struct hci_conn *conn); 1460 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 1461 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 1462 bool initiator); 1463 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 1464 1465 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 1466 1467 void hci_conn_failed(struct hci_conn *conn, u8 status); 1468 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle); 1469 1470 /* 1471 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 1472 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 1473 * working or anything else. They just guarantee that the object is available 1474 * and can be dereferenced. So you can use its locks, local variables and any 1475 * other constant data. 1476 * Before accessing runtime data, you _must_ lock the object and then check that 1477 * it is still running. As soon as you release the locks, the connection might 1478 * get dropped, though. 1479 * 1480 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 1481 * how long the underlying connection is held. So every channel that runs on the 1482 * hci_conn object calls this to prevent the connection from disappearing. As 1483 * long as you hold a device, you must also guarantee that you have a valid 1484 * reference to the device via hci_conn_get() (or the initial reference from 1485 * hci_conn_add()). 1486 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 1487 * break because nobody cares for that. But this means, we cannot use 1488 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 1489 */ 1490 1491 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 1492 { 1493 get_device(&conn->dev); 1494 return conn; 1495 } 1496 1497 static inline void hci_conn_put(struct hci_conn *conn) 1498 { 1499 put_device(&conn->dev); 1500 } 1501 1502 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn) 1503 { 1504 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1505 1506 atomic_inc(&conn->refcnt); 1507 cancel_delayed_work(&conn->disc_work); 1508 1509 return conn; 1510 } 1511 1512 static inline void hci_conn_drop(struct hci_conn *conn) 1513 { 1514 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1515 1516 if (atomic_dec_and_test(&conn->refcnt)) { 1517 unsigned long timeo; 1518 1519 switch (conn->type) { 1520 case ACL_LINK: 1521 case LE_LINK: 1522 cancel_delayed_work(&conn->idle_work); 1523 if (conn->state == BT_CONNECTED) { 1524 timeo = conn->disc_timeout; 1525 if (!conn->out) 1526 timeo *= 2; 1527 } else { 1528 timeo = 0; 1529 } 1530 break; 1531 1532 default: 1533 timeo = 0; 1534 break; 1535 } 1536 1537 cancel_delayed_work(&conn->disc_work); 1538 queue_delayed_work(conn->hdev->workqueue, 1539 &conn->disc_work, timeo); 1540 } 1541 } 1542 1543 /* ----- HCI Devices ----- */ 1544 static inline void hci_dev_put(struct hci_dev *d) 1545 { 1546 BT_DBG("%s orig refcnt %d", d->name, 1547 kref_read(&d->dev.kobj.kref)); 1548 1549 put_device(&d->dev); 1550 } 1551 1552 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1553 { 1554 BT_DBG("%s orig refcnt %d", d->name, 1555 kref_read(&d->dev.kobj.kref)); 1556 1557 get_device(&d->dev); 1558 return d; 1559 } 1560 1561 #define hci_dev_lock(d) mutex_lock(&d->lock) 1562 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1563 1564 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1565 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1566 1567 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1568 { 1569 return dev_get_drvdata(&hdev->dev); 1570 } 1571 1572 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1573 { 1574 dev_set_drvdata(&hdev->dev, data); 1575 } 1576 1577 static inline void *hci_get_priv(struct hci_dev *hdev) 1578 { 1579 return (char *)hdev + sizeof(*hdev); 1580 } 1581 1582 struct hci_dev *hci_dev_get(int index); 1583 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1584 1585 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); 1586 1587 static inline struct hci_dev *hci_alloc_dev(void) 1588 { 1589 return hci_alloc_dev_priv(0); 1590 } 1591 1592 void hci_free_dev(struct hci_dev *hdev); 1593 int hci_register_dev(struct hci_dev *hdev); 1594 void hci_unregister_dev(struct hci_dev *hdev); 1595 void hci_release_dev(struct hci_dev *hdev); 1596 int hci_register_suspend_notifier(struct hci_dev *hdev); 1597 int hci_unregister_suspend_notifier(struct hci_dev *hdev); 1598 int hci_suspend_dev(struct hci_dev *hdev); 1599 int hci_resume_dev(struct hci_dev *hdev); 1600 int hci_reset_dev(struct hci_dev *hdev); 1601 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1602 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1603 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1604 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1605 1606 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) 1607 { 1608 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 1609 hdev->msft_opcode = opcode; 1610 #endif 1611 } 1612 1613 static inline void hci_set_aosp_capable(struct hci_dev *hdev) 1614 { 1615 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 1616 hdev->aosp_capable = true; 1617 #endif 1618 } 1619 1620 static inline void hci_devcd_setup(struct hci_dev *hdev) 1621 { 1622 #ifdef CONFIG_DEV_COREDUMP 1623 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx); 1624 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout); 1625 skb_queue_head_init(&hdev->dump.dump_q); 1626 #endif 1627 } 1628 1629 int hci_dev_open(__u16 dev); 1630 int hci_dev_close(__u16 dev); 1631 int hci_dev_do_close(struct hci_dev *hdev); 1632 int hci_dev_reset(__u16 dev); 1633 int hci_dev_reset_stat(__u16 dev); 1634 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1635 int hci_get_dev_list(void __user *arg); 1636 int hci_get_dev_info(void __user *arg); 1637 int hci_get_conn_list(void __user *arg); 1638 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1639 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1640 int hci_inquiry(void __user *arg); 1641 1642 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1643 bdaddr_t *bdaddr, u8 type); 1644 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1645 struct list_head *list, bdaddr_t *bdaddr, 1646 u8 type); 1647 struct bdaddr_list_with_flags * 1648 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1649 u8 type); 1650 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1651 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1652 u8 type, u8 *peer_irk, u8 *local_irk); 1653 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1654 u8 type, u32 flags); 1655 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1656 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1657 u8 type); 1658 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1659 u8 type); 1660 void hci_bdaddr_list_clear(struct list_head *list); 1661 1662 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1663 bdaddr_t *addr, u8 addr_type); 1664 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1665 bdaddr_t *addr, u8 addr_type); 1666 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1667 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1668 void hci_conn_params_free(struct hci_conn_params *param); 1669 1670 void hci_pend_le_list_del_init(struct hci_conn_params *param); 1671 void hci_pend_le_list_add(struct hci_conn_params *param, 1672 struct list_head *list); 1673 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1674 bdaddr_t *addr, 1675 u8 addr_type); 1676 1677 void hci_uuids_clear(struct hci_dev *hdev); 1678 1679 void hci_link_keys_clear(struct hci_dev *hdev); 1680 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1681 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1682 bdaddr_t *bdaddr, u8 *val, u8 type, 1683 u8 pin_len, bool *persistent); 1684 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1685 u8 addr_type, u8 type, u8 authenticated, 1686 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1687 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1688 u8 addr_type, u8 role); 1689 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1690 void hci_smp_ltks_clear(struct hci_dev *hdev); 1691 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1692 1693 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1694 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1695 u8 addr_type); 1696 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1697 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1698 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1699 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]); 1700 void hci_blocked_keys_clear(struct hci_dev *hdev); 1701 void hci_smp_irks_clear(struct hci_dev *hdev); 1702 1703 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1704 1705 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1706 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1707 bdaddr_t *bdaddr, u8 bdaddr_type); 1708 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1709 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1710 u8 *hash256, u8 *rand256); 1711 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1712 u8 bdaddr_type); 1713 1714 void hci_adv_instances_clear(struct hci_dev *hdev); 1715 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1716 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1717 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, 1718 u32 flags, u16 adv_data_len, u8 *adv_data, 1719 u16 scan_rsp_len, u8 *scan_rsp_data, 1720 u16 timeout, u16 duration, s8 tx_power, 1721 u32 min_interval, u32 max_interval, 1722 u8 mesh_handle); 1723 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, 1724 u32 flags, u8 data_len, u8 *data, 1725 u32 min_interval, u32 max_interval); 1726 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, 1727 u16 adv_data_len, u8 *adv_data, 1728 u16 scan_rsp_len, u8 *scan_rsp_data); 1729 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1730 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1731 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance); 1732 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); 1733 1734 void hci_adv_monitors_clear(struct hci_dev *hdev); 1735 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1736 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1737 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); 1738 int hci_remove_all_adv_monitor(struct hci_dev *hdev); 1739 bool hci_is_adv_monitoring(struct hci_dev *hdev); 1740 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); 1741 1742 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1743 1744 void hci_init_sysfs(struct hci_dev *hdev); 1745 void hci_conn_init_sysfs(struct hci_conn *conn); 1746 void hci_conn_add_sysfs(struct hci_conn *conn); 1747 void hci_conn_del_sysfs(struct hci_conn *conn); 1748 1749 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1750 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent) 1751 1752 /* ----- LMP capabilities ----- */ 1753 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1754 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1755 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1756 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1757 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1758 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1759 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1760 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1761 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1762 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1763 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1764 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M) 1765 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1766 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1767 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1768 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1769 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1770 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1771 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1772 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1773 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1774 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1775 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1776 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1777 1778 /* ----- Extended LMP capabilities ----- */ 1779 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL) 1780 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL) 1781 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1782 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1783 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1784 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1785 1786 /* ----- Host capabilities ----- */ 1787 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1788 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1789 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1790 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1791 1792 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1793 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1794 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1795 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1796 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ 1797 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) 1798 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ 1799 !adv->rpa_expired) 1800 1801 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1802 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1803 1804 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M)) 1805 1806 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1807 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1808 1809 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \ 1810 !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \ 1811 &(dev)->quirks)) 1812 1813 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1814 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1815 1816 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY) 1817 1818 /* Use LL Privacy based address resolution if supported */ 1819 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \ 1820 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY)) 1821 1822 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \ 1823 (hdev->commands[39] & 0x04)) 1824 1825 #define read_key_size_capable(dev) \ 1826 ((dev)->commands[20] & 0x10 && \ 1827 !test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks)) 1828 1829 /* Use enhanced synchronous connection if command is supported and its quirk 1830 * has not been set. 1831 */ 1832 #define enhanced_sync_conn_capable(dev) \ 1833 (((dev)->commands[29] & 0x08) && \ 1834 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks)) 1835 1836 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1837 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1838 ((dev)->commands[37] & 0x40) && \ 1839 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks)) 1840 1841 /* Use ext create connection if command is supported */ 1842 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1843 1844 /* Extended advertising support */ 1845 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1846 1847 /* Maximum advertising length */ 1848 #define max_adv_len(dev) \ 1849 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH) 1850 1851 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789: 1852 * 1853 * C24: Mandatory if the LE Controller supports Connection State and either 1854 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported 1855 */ 1856 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \ 1857 ext_adv_capable(dev)) 1858 1859 /* Periodic advertising support */ 1860 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV)) 1861 1862 /* CIS Master/Slave and BIS support */ 1863 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev)) 1864 #define cis_capable(dev) \ 1865 (cis_central_capable(dev) || cis_peripheral_capable(dev)) 1866 #define cis_central_capable(dev) \ 1867 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL) 1868 #define cis_peripheral_capable(dev) \ 1869 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) 1870 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) 1871 #define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER) 1872 1873 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \ 1874 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks))) 1875 1876 /* ----- HCI protocols ----- */ 1877 #define HCI_PROTO_DEFER 0x01 1878 1879 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1880 __u8 type, __u8 *flags) 1881 { 1882 switch (type) { 1883 case ACL_LINK: 1884 return l2cap_connect_ind(hdev, bdaddr); 1885 1886 case SCO_LINK: 1887 case ESCO_LINK: 1888 return sco_connect_ind(hdev, bdaddr, flags); 1889 1890 case ISO_LINK: 1891 return iso_connect_ind(hdev, bdaddr, flags); 1892 1893 default: 1894 BT_ERR("unknown link type %d", type); 1895 return -EINVAL; 1896 } 1897 } 1898 1899 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1900 { 1901 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1902 return HCI_ERROR_REMOTE_USER_TERM; 1903 1904 return l2cap_disconn_ind(conn); 1905 } 1906 1907 /* ----- HCI callbacks ----- */ 1908 struct hci_cb { 1909 struct list_head list; 1910 1911 char *name; 1912 1913 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1914 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1915 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1916 __u8 encrypt); 1917 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1918 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1919 }; 1920 1921 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1922 { 1923 struct hci_cb *cb; 1924 1925 mutex_lock(&hci_cb_list_lock); 1926 list_for_each_entry(cb, &hci_cb_list, list) { 1927 if (cb->connect_cfm) 1928 cb->connect_cfm(conn, status); 1929 } 1930 mutex_unlock(&hci_cb_list_lock); 1931 1932 if (conn->connect_cfm_cb) 1933 conn->connect_cfm_cb(conn, status); 1934 } 1935 1936 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1937 { 1938 struct hci_cb *cb; 1939 1940 mutex_lock(&hci_cb_list_lock); 1941 list_for_each_entry(cb, &hci_cb_list, list) { 1942 if (cb->disconn_cfm) 1943 cb->disconn_cfm(conn, reason); 1944 } 1945 mutex_unlock(&hci_cb_list_lock); 1946 1947 if (conn->disconn_cfm_cb) 1948 conn->disconn_cfm_cb(conn, reason); 1949 } 1950 1951 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1952 { 1953 struct hci_cb *cb; 1954 __u8 encrypt; 1955 1956 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1957 return; 1958 1959 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1960 1961 mutex_lock(&hci_cb_list_lock); 1962 list_for_each_entry(cb, &hci_cb_list, list) { 1963 if (cb->security_cfm) 1964 cb->security_cfm(conn, status, encrypt); 1965 } 1966 mutex_unlock(&hci_cb_list_lock); 1967 1968 if (conn->security_cfm_cb) 1969 conn->security_cfm_cb(conn, status); 1970 } 1971 1972 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status) 1973 { 1974 struct hci_cb *cb; 1975 __u8 encrypt; 1976 1977 if (conn->state == BT_CONFIG) { 1978 if (!status) 1979 conn->state = BT_CONNECTED; 1980 1981 hci_connect_cfm(conn, status); 1982 hci_conn_drop(conn); 1983 return; 1984 } 1985 1986 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) 1987 encrypt = 0x00; 1988 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) 1989 encrypt = 0x02; 1990 else 1991 encrypt = 0x01; 1992 1993 if (!status) { 1994 if (conn->sec_level == BT_SECURITY_SDP) 1995 conn->sec_level = BT_SECURITY_LOW; 1996 1997 if (conn->pending_sec_level > conn->sec_level) 1998 conn->sec_level = conn->pending_sec_level; 1999 } 2000 2001 mutex_lock(&hci_cb_list_lock); 2002 list_for_each_entry(cb, &hci_cb_list, list) { 2003 if (cb->security_cfm) 2004 cb->security_cfm(conn, status, encrypt); 2005 } 2006 mutex_unlock(&hci_cb_list_lock); 2007 2008 if (conn->security_cfm_cb) 2009 conn->security_cfm_cb(conn, status); 2010 } 2011 2012 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 2013 { 2014 struct hci_cb *cb; 2015 2016 mutex_lock(&hci_cb_list_lock); 2017 list_for_each_entry(cb, &hci_cb_list, list) { 2018 if (cb->key_change_cfm) 2019 cb->key_change_cfm(conn, status); 2020 } 2021 mutex_unlock(&hci_cb_list_lock); 2022 } 2023 2024 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 2025 __u8 role) 2026 { 2027 struct hci_cb *cb; 2028 2029 mutex_lock(&hci_cb_list_lock); 2030 list_for_each_entry(cb, &hci_cb_list, list) { 2031 if (cb->role_switch_cfm) 2032 cb->role_switch_cfm(conn, status, role); 2033 } 2034 mutex_unlock(&hci_cb_list_lock); 2035 } 2036 2037 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 2038 { 2039 if (addr_type != ADDR_LE_DEV_RANDOM) 2040 return false; 2041 2042 if ((bdaddr->b[5] & 0xc0) == 0x40) 2043 return true; 2044 2045 return false; 2046 } 2047 2048 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 2049 { 2050 if (addr_type == ADDR_LE_DEV_PUBLIC) 2051 return true; 2052 2053 /* Check for Random Static address type */ 2054 if ((addr->b[5] & 0xc0) == 0xc0) 2055 return true; 2056 2057 return false; 2058 } 2059 2060 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 2061 bdaddr_t *bdaddr, u8 addr_type) 2062 { 2063 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 2064 return NULL; 2065 2066 return hci_find_irk_by_rpa(hdev, bdaddr); 2067 } 2068 2069 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 2070 u16 to_multiplier) 2071 { 2072 u16 max_latency; 2073 2074 if (min > max || min < 6 || max > 3200) 2075 return -EINVAL; 2076 2077 if (to_multiplier < 10 || to_multiplier > 3200) 2078 return -EINVAL; 2079 2080 if (max >= to_multiplier * 8) 2081 return -EINVAL; 2082 2083 max_latency = (to_multiplier * 4 / max) - 1; 2084 if (latency > 499 || latency > max_latency) 2085 return -EINVAL; 2086 2087 return 0; 2088 } 2089 2090 int hci_register_cb(struct hci_cb *hcb); 2091 int hci_unregister_cb(struct hci_cb *hcb); 2092 2093 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 2094 const void *param); 2095 2096 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 2097 const void *param); 2098 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 2099 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 2100 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); 2101 2102 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 2103 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); 2104 2105 u32 hci_conn_get_phy(struct hci_conn *conn); 2106 2107 /* ----- HCI Sockets ----- */ 2108 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 2109 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 2110 int flag, struct sock *skip_sk); 2111 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 2112 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 2113 void *data, u16 data_len, ktime_t tstamp, 2114 int flag, struct sock *skip_sk); 2115 2116 void hci_sock_dev_event(struct hci_dev *hdev, int event); 2117 2118 #define HCI_MGMT_VAR_LEN BIT(0) 2119 #define HCI_MGMT_NO_HDEV BIT(1) 2120 #define HCI_MGMT_UNTRUSTED BIT(2) 2121 #define HCI_MGMT_UNCONFIGURED BIT(3) 2122 #define HCI_MGMT_HDEV_OPTIONAL BIT(4) 2123 2124 struct hci_mgmt_handler { 2125 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 2126 u16 data_len); 2127 size_t data_len; 2128 unsigned long flags; 2129 }; 2130 2131 struct hci_mgmt_chan { 2132 struct list_head list; 2133 unsigned short channel; 2134 size_t handler_count; 2135 const struct hci_mgmt_handler *handlers; 2136 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 2137 }; 2138 2139 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 2140 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 2141 2142 /* Management interface */ 2143 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 2144 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 2145 BIT(BDADDR_LE_RANDOM)) 2146 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 2147 BIT(BDADDR_LE_PUBLIC) | \ 2148 BIT(BDADDR_LE_RANDOM)) 2149 2150 /* These LE scan and inquiry parameters were chosen according to LE General 2151 * Discovery Procedure specification. 2152 */ 2153 #define DISCOV_LE_SCAN_WIN 0x12 2154 #define DISCOV_LE_SCAN_INT 0x12 2155 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 2156 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 2157 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 2158 #define DISCOV_BREDR_INQUIRY_LEN 0x08 2159 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 2160 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ 2161 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ 2162 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */ 2163 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */ 2164 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */ 2165 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */ 2166 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10) 2167 2168 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */ 2169 2170 void mgmt_fill_version_info(void *ver); 2171 int mgmt_new_settings(struct hci_dev *hdev); 2172 void mgmt_index_added(struct hci_dev *hdev); 2173 void mgmt_index_removed(struct hci_dev *hdev); 2174 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 2175 void mgmt_power_on(struct hci_dev *hdev, int err); 2176 void __mgmt_power_off(struct hci_dev *hdev); 2177 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 2178 bool persistent); 2179 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 2180 u8 *name, u8 name_len); 2181 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 2182 u8 link_type, u8 addr_type, u8 reason, 2183 bool mgmt_connected); 2184 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 2185 u8 link_type, u8 addr_type, u8 status); 2186 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2187 u8 addr_type, u8 status); 2188 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 2189 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2190 u8 status); 2191 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2192 u8 status); 2193 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2194 u8 link_type, u8 addr_type, u32 value, 2195 u8 confirm_hint); 2196 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2197 u8 link_type, u8 addr_type, u8 status); 2198 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2199 u8 link_type, u8 addr_type, u8 status); 2200 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2201 u8 link_type, u8 addr_type); 2202 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2203 u8 link_type, u8 addr_type, u8 status); 2204 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2205 u8 link_type, u8 addr_type, u8 status); 2206 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 2207 u8 link_type, u8 addr_type, u32 passkey, 2208 u8 entered); 2209 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 2210 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 2211 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 2212 u8 status); 2213 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 2214 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 2215 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 2216 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2217 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 2218 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len, 2219 u64 instant); 2220 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2221 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 2222 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 2223 void mgmt_suspending(struct hci_dev *hdev, u8 state); 2224 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr, 2225 u8 addr_type); 2226 bool mgmt_powering_down(struct hci_dev *hdev); 2227 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 2228 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 2229 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 2230 bool persistent); 2231 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 2232 u8 bdaddr_type, u8 store_hint, u16 min_interval, 2233 u16 max_interval, u16 latency, u16 timeout); 2234 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 2235 bool mgmt_get_connectable(struct hci_dev *hdev); 2236 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 2237 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 2238 u8 instance); 2239 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 2240 u8 instance); 2241 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); 2242 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 2243 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, 2244 bdaddr_t *bdaddr, u8 addr_type); 2245 2246 int hci_abort_conn(struct hci_conn *conn, u8 reason); 2247 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 2248 u16 to_multiplier); 2249 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 2250 __u8 ltk[16], __u8 key_size); 2251 2252 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 2253 u8 *bdaddr_type); 2254 2255 #define SCO_AIRMODE_MASK 0x0003 2256 #define SCO_AIRMODE_CVSD 0x0000 2257 #define SCO_AIRMODE_TRANSP 0x0003 2258 2259 #define LOCAL_CODEC_ACL_MASK BIT(0) 2260 #define LOCAL_CODEC_SCO_MASK BIT(1) 2261 2262 #define TRANSPORT_TYPE_MAX 0x04 2263 2264 #endif /* __HCI_CORE_H */ 2265