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 type; 192 u8 val[16]; 193 }; 194 195 struct smp_ltk { 196 struct list_head list; 197 struct rcu_head rcu; 198 bdaddr_t bdaddr; 199 u8 bdaddr_type; 200 u8 authenticated; 201 u8 type; 202 u8 enc_size; 203 __le16 ediv; 204 __le64 rand; 205 u8 val[16]; 206 }; 207 208 struct smp_irk { 209 struct list_head list; 210 struct rcu_head rcu; 211 bdaddr_t rpa; 212 bdaddr_t bdaddr; 213 u8 addr_type; 214 u8 val[16]; 215 }; 216 217 struct link_key { 218 struct list_head list; 219 struct rcu_head rcu; 220 bdaddr_t bdaddr; 221 u8 type; 222 u8 val[HCI_LINK_KEY_SIZE]; 223 u8 pin_len; 224 }; 225 226 struct oob_data { 227 struct list_head list; 228 bdaddr_t bdaddr; 229 u8 bdaddr_type; 230 u8 present; 231 u8 hash192[16]; 232 u8 rand192[16]; 233 u8 hash256[16]; 234 u8 rand256[16]; 235 }; 236 237 struct adv_info { 238 struct list_head list; 239 bool enabled; 240 bool pending; 241 bool periodic; 242 __u8 mesh; 243 __u8 instance; 244 __u32 flags; 245 __u16 timeout; 246 __u16 remaining_time; 247 __u16 duration; 248 __u16 adv_data_len; 249 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 250 bool adv_data_changed; 251 __u16 scan_rsp_len; 252 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 253 bool scan_rsp_changed; 254 __u16 per_adv_data_len; 255 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 256 __s8 tx_power; 257 __u32 min_interval; 258 __u32 max_interval; 259 bdaddr_t random_addr; 260 bool rpa_expired; 261 struct delayed_work rpa_expired_cb; 262 }; 263 264 #define HCI_MAX_ADV_INSTANCES 5 265 #define HCI_DEFAULT_ADV_DURATION 2 266 267 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F 268 269 #define DATA_CMP(_d1, _l1, _d2, _l2) \ 270 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2) 271 272 #define ADV_DATA_CMP(_adv, _data, _len) \ 273 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len) 274 275 #define SCAN_RSP_CMP(_adv, _data, _len) \ 276 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len) 277 278 struct monitored_device { 279 struct list_head list; 280 281 bdaddr_t bdaddr; 282 __u8 addr_type; 283 __u16 handle; 284 bool notified; 285 }; 286 287 struct adv_pattern { 288 struct list_head list; 289 __u8 ad_type; 290 __u8 offset; 291 __u8 length; 292 __u8 value[HCI_MAX_EXT_AD_LENGTH]; 293 }; 294 295 struct adv_rssi_thresholds { 296 __s8 low_threshold; 297 __s8 high_threshold; 298 __u16 low_threshold_timeout; 299 __u16 high_threshold_timeout; 300 __u8 sampling_period; 301 }; 302 303 struct adv_monitor { 304 struct list_head patterns; 305 struct adv_rssi_thresholds rssi; 306 __u16 handle; 307 308 enum { 309 ADV_MONITOR_STATE_NOT_REGISTERED, 310 ADV_MONITOR_STATE_REGISTERED, 311 ADV_MONITOR_STATE_OFFLOADED 312 } state; 313 }; 314 315 #define HCI_MIN_ADV_MONITOR_HANDLE 1 316 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32 317 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16 318 #define HCI_ADV_MONITOR_EXT_NONE 1 319 #define HCI_ADV_MONITOR_EXT_MSFT 2 320 321 #define HCI_MAX_SHORT_NAME_LENGTH 10 322 323 #define HCI_CONN_HANDLE_MAX 0x0eff 324 #define HCI_CONN_HANDLE_UNSET(_handle) (_handle > HCI_CONN_HANDLE_MAX) 325 326 /* Min encryption key size to match with SMP */ 327 #define HCI_MIN_ENC_KEY_SIZE 7 328 329 /* Default LE RPA expiry time, 15 minutes */ 330 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 331 332 /* Default min/max age of connection information (1s/3s) */ 333 #define DEFAULT_CONN_INFO_MIN_AGE 1000 334 #define DEFAULT_CONN_INFO_MAX_AGE 3000 335 /* Default authenticated payload timeout 30s */ 336 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8 337 338 #define HCI_MAX_PAGES 3 339 340 struct hci_dev { 341 struct list_head list; 342 struct mutex lock; 343 344 struct ida unset_handle_ida; 345 346 const char *name; 347 unsigned long flags; 348 __u16 id; 349 __u8 bus; 350 bdaddr_t bdaddr; 351 bdaddr_t setup_addr; 352 bdaddr_t public_addr; 353 bdaddr_t random_addr; 354 bdaddr_t static_addr; 355 __u8 adv_addr_type; 356 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 357 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 358 __u8 eir[HCI_MAX_EIR_LENGTH]; 359 __u16 appearance; 360 __u8 dev_class[3]; 361 __u8 major_class; 362 __u8 minor_class; 363 __u8 max_page; 364 __u8 features[HCI_MAX_PAGES][8]; 365 __u8 le_features[8]; 366 __u8 le_accept_list_size; 367 __u8 le_resolv_list_size; 368 __u8 le_num_of_adv_sets; 369 __u8 le_states[8]; 370 __u8 mesh_ad_types[16]; 371 __u8 mesh_send_ref; 372 __u8 commands[64]; 373 __u8 hci_ver; 374 __u16 hci_rev; 375 __u8 lmp_ver; 376 __u16 manufacturer; 377 __u16 lmp_subver; 378 __u16 voice_setting; 379 __u8 num_iac; 380 __u16 stored_max_keys; 381 __u16 stored_num_keys; 382 __u8 io_capability; 383 __s8 inq_tx_power; 384 __u8 err_data_reporting; 385 __u16 page_scan_interval; 386 __u16 page_scan_window; 387 __u8 page_scan_type; 388 __u8 le_adv_channel_map; 389 __u16 le_adv_min_interval; 390 __u16 le_adv_max_interval; 391 __u8 le_scan_type; 392 __u16 le_scan_interval; 393 __u16 le_scan_window; 394 __u16 le_scan_int_suspend; 395 __u16 le_scan_window_suspend; 396 __u16 le_scan_int_discovery; 397 __u16 le_scan_window_discovery; 398 __u16 le_scan_int_adv_monitor; 399 __u16 le_scan_window_adv_monitor; 400 __u16 le_scan_int_connect; 401 __u16 le_scan_window_connect; 402 __u16 le_conn_min_interval; 403 __u16 le_conn_max_interval; 404 __u16 le_conn_latency; 405 __u16 le_supv_timeout; 406 __u16 le_def_tx_len; 407 __u16 le_def_tx_time; 408 __u16 le_max_tx_len; 409 __u16 le_max_tx_time; 410 __u16 le_max_rx_len; 411 __u16 le_max_rx_time; 412 __u8 le_max_key_size; 413 __u8 le_min_key_size; 414 __u16 discov_interleaved_timeout; 415 __u16 conn_info_min_age; 416 __u16 conn_info_max_age; 417 __u16 auth_payload_timeout; 418 __u8 min_enc_key_size; 419 __u8 max_enc_key_size; 420 __u8 pairing_opts; 421 __u8 ssp_debug_mode; 422 __u8 hw_error_code; 423 __u32 clock; 424 __u16 advmon_allowlist_duration; 425 __u16 advmon_no_filter_duration; 426 __u8 enable_advmon_interleave_scan; 427 428 __u16 devid_source; 429 __u16 devid_vendor; 430 __u16 devid_product; 431 __u16 devid_version; 432 433 __u8 def_page_scan_type; 434 __u16 def_page_scan_int; 435 __u16 def_page_scan_window; 436 __u8 def_inq_scan_type; 437 __u16 def_inq_scan_int; 438 __u16 def_inq_scan_window; 439 __u16 def_br_lsto; 440 __u16 def_page_timeout; 441 __u16 def_multi_adv_rotation_duration; 442 __u16 def_le_autoconnect_timeout; 443 __s8 min_le_tx_power; 444 __s8 max_le_tx_power; 445 446 __u16 pkt_type; 447 __u16 esco_type; 448 __u16 link_policy; 449 __u16 link_mode; 450 451 __u32 idle_timeout; 452 __u16 sniff_min_interval; 453 __u16 sniff_max_interval; 454 455 unsigned int auto_accept_delay; 456 457 unsigned long quirks; 458 459 atomic_t cmd_cnt; 460 unsigned int acl_cnt; 461 unsigned int sco_cnt; 462 unsigned int le_cnt; 463 unsigned int iso_cnt; 464 465 unsigned int acl_mtu; 466 unsigned int sco_mtu; 467 unsigned int le_mtu; 468 unsigned int iso_mtu; 469 unsigned int acl_pkts; 470 unsigned int sco_pkts; 471 unsigned int le_pkts; 472 unsigned int iso_pkts; 473 474 unsigned long acl_last_tx; 475 unsigned long sco_last_tx; 476 unsigned long le_last_tx; 477 478 __u8 le_tx_def_phys; 479 __u8 le_rx_def_phys; 480 481 struct workqueue_struct *workqueue; 482 struct workqueue_struct *req_workqueue; 483 484 struct work_struct power_on; 485 struct delayed_work power_off; 486 struct work_struct error_reset; 487 struct work_struct cmd_sync_work; 488 struct list_head cmd_sync_work_list; 489 struct mutex cmd_sync_work_lock; 490 struct mutex unregister_lock; 491 struct work_struct cmd_sync_cancel_work; 492 struct work_struct reenable_adv_work; 493 494 __u16 discov_timeout; 495 struct delayed_work discov_off; 496 497 struct delayed_work service_cache; 498 499 struct delayed_work cmd_timer; 500 struct delayed_work ncmd_timer; 501 502 struct work_struct rx_work; 503 struct work_struct cmd_work; 504 struct work_struct tx_work; 505 506 struct delayed_work le_scan_disable; 507 struct delayed_work le_scan_restart; 508 509 struct sk_buff_head rx_q; 510 struct sk_buff_head raw_q; 511 struct sk_buff_head cmd_q; 512 513 struct sk_buff *sent_cmd; 514 struct sk_buff *recv_event; 515 516 struct mutex req_lock; 517 wait_queue_head_t req_wait_q; 518 __u32 req_status; 519 __u32 req_result; 520 struct sk_buff *req_skb; 521 struct sk_buff *req_rsp; 522 523 void *smp_data; 524 void *smp_bredr_data; 525 526 struct discovery_state discovery; 527 528 int discovery_old_state; 529 bool discovery_paused; 530 int advertising_old_state; 531 bool advertising_paused; 532 533 struct notifier_block suspend_notifier; 534 enum suspended_state suspend_state_next; 535 enum suspended_state suspend_state; 536 bool scanning_paused; 537 bool suspended; 538 u8 wake_reason; 539 bdaddr_t wake_addr; 540 u8 wake_addr_type; 541 542 struct hci_conn_hash conn_hash; 543 544 struct list_head mesh_pending; 545 struct list_head mgmt_pending; 546 struct list_head reject_list; 547 struct list_head accept_list; 548 struct list_head uuids; 549 struct list_head link_keys; 550 struct list_head long_term_keys; 551 struct list_head identity_resolving_keys; 552 struct list_head remote_oob_data; 553 struct list_head le_accept_list; 554 struct list_head le_resolv_list; 555 struct list_head le_conn_params; 556 struct list_head pend_le_conns; 557 struct list_head pend_le_reports; 558 struct list_head blocked_keys; 559 struct list_head local_codecs; 560 561 struct hci_dev_stats stat; 562 563 atomic_t promisc; 564 565 const char *hw_info; 566 const char *fw_info; 567 struct dentry *debugfs; 568 569 struct hci_devcoredump dump; 570 571 struct device dev; 572 573 struct rfkill *rfkill; 574 575 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 576 hci_conn_flags_t conn_flags; 577 578 __s8 adv_tx_power; 579 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 580 __u8 adv_data_len; 581 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 582 __u8 scan_rsp_data_len; 583 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 584 __u8 per_adv_data_len; 585 586 struct list_head adv_instances; 587 unsigned int adv_instance_cnt; 588 __u8 cur_adv_instance; 589 __u16 adv_instance_timeout; 590 struct delayed_work adv_instance_expire; 591 592 struct idr adv_monitors_idr; 593 unsigned int adv_monitors_cnt; 594 595 __u8 irk[16]; 596 __u32 rpa_timeout; 597 struct delayed_work rpa_expired; 598 bdaddr_t rpa; 599 600 struct delayed_work mesh_send_done; 601 602 enum { 603 INTERLEAVE_SCAN_NONE, 604 INTERLEAVE_SCAN_NO_FILTER, 605 INTERLEAVE_SCAN_ALLOWLIST 606 } interleave_scan_state; 607 608 struct delayed_work interleave_scan; 609 610 struct list_head monitored_devices; 611 bool advmon_pend_notify; 612 613 #if IS_ENABLED(CONFIG_BT_LEDS) 614 struct led_trigger *power_led; 615 #endif 616 617 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 618 __u16 msft_opcode; 619 void *msft_data; 620 bool msft_curve_validity; 621 #endif 622 623 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 624 bool aosp_capable; 625 bool aosp_quality_report; 626 #endif 627 628 int (*open)(struct hci_dev *hdev); 629 int (*close)(struct hci_dev *hdev); 630 int (*flush)(struct hci_dev *hdev); 631 int (*setup)(struct hci_dev *hdev); 632 int (*shutdown)(struct hci_dev *hdev); 633 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 634 void (*notify)(struct hci_dev *hdev, unsigned int evt); 635 void (*hw_error)(struct hci_dev *hdev, u8 code); 636 int (*post_init)(struct hci_dev *hdev); 637 int (*set_diag)(struct hci_dev *hdev, bool enable); 638 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 639 void (*cmd_timeout)(struct hci_dev *hdev); 640 void (*reset)(struct hci_dev *hdev); 641 bool (*wakeup)(struct hci_dev *hdev); 642 int (*set_quality_report)(struct hci_dev *hdev, bool enable); 643 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path); 644 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type, 645 struct bt_codec *codec, __u8 *vnd_len, 646 __u8 **vnd_data); 647 }; 648 649 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 650 651 enum conn_reasons { 652 CONN_REASON_PAIR_DEVICE, 653 CONN_REASON_L2CAP_CHAN, 654 CONN_REASON_SCO_CONNECT, 655 CONN_REASON_ISO_CONNECT, 656 }; 657 658 struct hci_conn { 659 struct list_head list; 660 661 atomic_t refcnt; 662 663 bdaddr_t dst; 664 __u8 dst_type; 665 bdaddr_t src; 666 __u8 src_type; 667 bdaddr_t init_addr; 668 __u8 init_addr_type; 669 bdaddr_t resp_addr; 670 __u8 resp_addr_type; 671 __u8 adv_instance; 672 __u16 handle; 673 __u16 sync_handle; 674 __u16 state; 675 __u16 mtu; 676 __u8 mode; 677 __u8 type; 678 __u8 role; 679 bool out; 680 __u8 attempt; 681 __u8 dev_class[3]; 682 __u8 features[HCI_MAX_PAGES][8]; 683 __u16 pkt_type; 684 __u16 link_policy; 685 __u8 key_type; 686 __u8 auth_type; 687 __u8 sec_level; 688 __u8 pending_sec_level; 689 __u8 pin_length; 690 __u8 enc_key_size; 691 __u8 io_capability; 692 __u32 passkey_notify; 693 __u8 passkey_entered; 694 __u16 disc_timeout; 695 __u16 conn_timeout; 696 __u16 setting; 697 __u16 auth_payload_timeout; 698 __u16 le_conn_min_interval; 699 __u16 le_conn_max_interval; 700 __u16 le_conn_interval; 701 __u16 le_conn_latency; 702 __u16 le_supv_timeout; 703 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH]; 704 __u8 le_adv_data_len; 705 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH]; 706 __u8 le_per_adv_data_len; 707 __u8 le_tx_phy; 708 __u8 le_rx_phy; 709 __s8 rssi; 710 __s8 tx_power; 711 __s8 max_tx_power; 712 struct bt_iso_qos iso_qos; 713 unsigned long flags; 714 715 enum conn_reasons conn_reason; 716 __u8 abort_reason; 717 718 __u32 clock; 719 __u16 clock_accuracy; 720 721 unsigned long conn_info_timestamp; 722 723 __u8 remote_cap; 724 __u8 remote_auth; 725 __u8 remote_id; 726 727 unsigned int sent; 728 729 struct sk_buff_head data_q; 730 struct list_head chan_list; 731 732 struct delayed_work disc_work; 733 struct delayed_work auto_accept_work; 734 struct delayed_work idle_work; 735 struct delayed_work le_conn_timeout; 736 737 struct device dev; 738 struct dentry *debugfs; 739 740 struct hci_dev *hdev; 741 void *l2cap_data; 742 void *sco_data; 743 void *iso_data; 744 745 struct list_head link_list; 746 struct hci_conn *parent; 747 struct hci_link *link; 748 749 struct bt_codec codec; 750 751 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 752 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 753 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 754 755 void (*cleanup)(struct hci_conn *conn); 756 }; 757 758 struct hci_link { 759 struct list_head list; 760 struct hci_conn *conn; 761 }; 762 763 struct hci_chan { 764 struct list_head list; 765 __u16 handle; 766 struct hci_conn *conn; 767 struct sk_buff_head data_q; 768 unsigned int sent; 769 __u8 state; 770 }; 771 772 struct hci_conn_params { 773 struct list_head list; 774 struct list_head action; 775 776 bdaddr_t addr; 777 u8 addr_type; 778 779 u16 conn_min_interval; 780 u16 conn_max_interval; 781 u16 conn_latency; 782 u16 supervision_timeout; 783 784 enum { 785 HCI_AUTO_CONN_DISABLED, 786 HCI_AUTO_CONN_REPORT, 787 HCI_AUTO_CONN_DIRECT, 788 HCI_AUTO_CONN_ALWAYS, 789 HCI_AUTO_CONN_LINK_LOSS, 790 HCI_AUTO_CONN_EXPLICIT, 791 } auto_connect; 792 793 struct hci_conn *conn; 794 bool explicit_connect; 795 /* Accessed without hdev->lock: */ 796 hci_conn_flags_t flags; 797 u8 privacy_mode; 798 }; 799 800 extern struct list_head hci_dev_list; 801 extern struct list_head hci_cb_list; 802 extern rwlock_t hci_dev_list_lock; 803 extern struct mutex hci_cb_list_lock; 804 805 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 806 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 807 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 808 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 809 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 810 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 811 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 812 813 #define hci_dev_clear_volatile_flags(hdev) \ 814 do { \ 815 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 816 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 817 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\ 818 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 819 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \ 820 } while (0) 821 822 #define hci_dev_le_state_simultaneous(hdev) \ 823 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \ 824 (hdev->le_states[4] & 0x08) && /* Central */ \ 825 (hdev->le_states[4] & 0x40) && /* Peripheral */ \ 826 (hdev->le_states[3] & 0x10)) /* Simultaneous */ 827 828 /* ----- HCI interface to upper protocols ----- */ 829 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 830 int l2cap_disconn_ind(struct hci_conn *hcon); 831 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 832 833 #if IS_ENABLED(CONFIG_BT_BREDR) 834 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 835 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 836 #else 837 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 838 __u8 *flags) 839 { 840 return 0; 841 } 842 843 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 844 { 845 } 846 #endif 847 848 #if IS_ENABLED(CONFIG_BT_LE) 849 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 850 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 851 #else 852 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 853 __u8 *flags) 854 { 855 return 0; 856 } 857 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, 858 u16 flags) 859 { 860 } 861 #endif 862 863 /* ----- Inquiry cache ----- */ 864 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 865 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 866 867 static inline void discovery_init(struct hci_dev *hdev) 868 { 869 hdev->discovery.state = DISCOVERY_STOPPED; 870 INIT_LIST_HEAD(&hdev->discovery.all); 871 INIT_LIST_HEAD(&hdev->discovery.unknown); 872 INIT_LIST_HEAD(&hdev->discovery.resolve); 873 hdev->discovery.report_invalid_rssi = true; 874 hdev->discovery.rssi = HCI_RSSI_INVALID; 875 } 876 877 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 878 { 879 hdev->discovery.result_filtering = false; 880 hdev->discovery.report_invalid_rssi = true; 881 hdev->discovery.rssi = HCI_RSSI_INVALID; 882 hdev->discovery.uuid_count = 0; 883 kfree(hdev->discovery.uuids); 884 hdev->discovery.uuids = NULL; 885 hdev->discovery.scan_start = 0; 886 hdev->discovery.scan_duration = 0; 887 } 888 889 bool hci_discovery_active(struct hci_dev *hdev); 890 891 void hci_discovery_set_state(struct hci_dev *hdev, int state); 892 893 static inline int inquiry_cache_empty(struct hci_dev *hdev) 894 { 895 return list_empty(&hdev->discovery.all); 896 } 897 898 static inline long inquiry_cache_age(struct hci_dev *hdev) 899 { 900 struct discovery_state *c = &hdev->discovery; 901 return jiffies - c->timestamp; 902 } 903 904 static inline long inquiry_entry_age(struct inquiry_entry *e) 905 { 906 return jiffies - e->timestamp; 907 } 908 909 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 910 bdaddr_t *bdaddr); 911 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 912 bdaddr_t *bdaddr); 913 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 914 bdaddr_t *bdaddr, 915 int state); 916 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 917 struct inquiry_entry *ie); 918 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 919 bool name_known); 920 void hci_inquiry_cache_flush(struct hci_dev *hdev); 921 922 /* ----- HCI Connections ----- */ 923 enum { 924 HCI_CONN_AUTH_PEND, 925 HCI_CONN_ENCRYPT_PEND, 926 HCI_CONN_RSWITCH_PEND, 927 HCI_CONN_MODE_CHANGE_PEND, 928 HCI_CONN_SCO_SETUP_PEND, 929 HCI_CONN_MGMT_CONNECTED, 930 HCI_CONN_SSP_ENABLED, 931 HCI_CONN_SC_ENABLED, 932 HCI_CONN_AES_CCM, 933 HCI_CONN_POWER_SAVE, 934 HCI_CONN_FLUSH_KEY, 935 HCI_CONN_ENCRYPT, 936 HCI_CONN_AUTH, 937 HCI_CONN_SECURE, 938 HCI_CONN_FIPS, 939 HCI_CONN_STK_ENCRYPT, 940 HCI_CONN_AUTH_INITIATOR, 941 HCI_CONN_DROP, 942 HCI_CONN_CANCEL, 943 HCI_CONN_PARAM_REMOVAL_PEND, 944 HCI_CONN_NEW_LINK_KEY, 945 HCI_CONN_SCANNING, 946 HCI_CONN_AUTH_FAILURE, 947 HCI_CONN_PER_ADV, 948 HCI_CONN_BIG_CREATED, 949 HCI_CONN_CREATE_CIS, 950 HCI_CONN_BIG_SYNC, 951 HCI_CONN_BIG_SYNC_FAILED, 952 HCI_CONN_PA_SYNC, 953 HCI_CONN_PA_SYNC_FAILED, 954 }; 955 956 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 957 { 958 struct hci_dev *hdev = conn->hdev; 959 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 960 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 961 } 962 963 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 964 { 965 struct hci_dev *hdev = conn->hdev; 966 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 967 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 968 } 969 970 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 971 { 972 struct hci_conn_hash *h = &hdev->conn_hash; 973 list_add_tail_rcu(&c->list, &h->list); 974 switch (c->type) { 975 case ACL_LINK: 976 h->acl_num++; 977 break; 978 case LE_LINK: 979 h->le_num++; 980 if (c->role == HCI_ROLE_SLAVE) 981 h->le_num_peripheral++; 982 break; 983 case SCO_LINK: 984 case ESCO_LINK: 985 h->sco_num++; 986 break; 987 case ISO_LINK: 988 h->iso_num++; 989 break; 990 } 991 } 992 993 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 994 { 995 struct hci_conn_hash *h = &hdev->conn_hash; 996 997 list_del_rcu(&c->list); 998 synchronize_rcu(); 999 1000 switch (c->type) { 1001 case ACL_LINK: 1002 h->acl_num--; 1003 break; 1004 case LE_LINK: 1005 h->le_num--; 1006 if (c->role == HCI_ROLE_SLAVE) 1007 h->le_num_peripheral--; 1008 break; 1009 case SCO_LINK: 1010 case ESCO_LINK: 1011 h->sco_num--; 1012 break; 1013 case ISO_LINK: 1014 h->iso_num--; 1015 break; 1016 } 1017 } 1018 1019 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 1020 { 1021 struct hci_conn_hash *h = &hdev->conn_hash; 1022 switch (type) { 1023 case ACL_LINK: 1024 return h->acl_num; 1025 case LE_LINK: 1026 return h->le_num; 1027 case SCO_LINK: 1028 case ESCO_LINK: 1029 return h->sco_num; 1030 case ISO_LINK: 1031 return h->iso_num; 1032 default: 1033 return 0; 1034 } 1035 } 1036 1037 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 1038 { 1039 struct hci_conn_hash *c = &hdev->conn_hash; 1040 1041 return c->acl_num + c->sco_num + c->le_num + c->iso_num; 1042 } 1043 1044 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 1045 { 1046 struct hci_conn_hash *h = &hdev->conn_hash; 1047 struct hci_conn *c; 1048 __u8 type = INVALID_LINK; 1049 1050 rcu_read_lock(); 1051 1052 list_for_each_entry_rcu(c, &h->list, list) { 1053 if (c->handle == handle) { 1054 type = c->type; 1055 break; 1056 } 1057 } 1058 1059 rcu_read_unlock(); 1060 1061 return type; 1062 } 1063 1064 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev, 1065 bdaddr_t *ba, __u8 bis) 1066 { 1067 struct hci_conn_hash *h = &hdev->conn_hash; 1068 struct hci_conn *c; 1069 1070 rcu_read_lock(); 1071 1072 list_for_each_entry_rcu(c, &h->list, list) { 1073 if (bacmp(&c->dst, ba) || c->type != ISO_LINK) 1074 continue; 1075 1076 if (c->iso_qos.bcast.bis == bis) { 1077 rcu_read_unlock(); 1078 return c; 1079 } 1080 } 1081 rcu_read_unlock(); 1082 1083 return NULL; 1084 } 1085 1086 static inline struct hci_conn * 1087 hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev, 1088 bdaddr_t *ba, 1089 __u8 big, __u8 bis) 1090 { 1091 struct hci_conn_hash *h = &hdev->conn_hash; 1092 struct hci_conn *c; 1093 1094 rcu_read_lock(); 1095 1096 list_for_each_entry_rcu(c, &h->list, list) { 1097 if (bacmp(&c->dst, ba) || c->type != ISO_LINK || 1098 !test_bit(HCI_CONN_PER_ADV, &c->flags)) 1099 continue; 1100 1101 if (c->iso_qos.bcast.big == big && 1102 c->iso_qos.bcast.bis == bis) { 1103 rcu_read_unlock(); 1104 return c; 1105 } 1106 } 1107 rcu_read_unlock(); 1108 1109 return NULL; 1110 } 1111 1112 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 1113 __u16 handle) 1114 { 1115 struct hci_conn_hash *h = &hdev->conn_hash; 1116 struct hci_conn *c; 1117 1118 rcu_read_lock(); 1119 1120 list_for_each_entry_rcu(c, &h->list, list) { 1121 if (c->handle == handle) { 1122 rcu_read_unlock(); 1123 return c; 1124 } 1125 } 1126 rcu_read_unlock(); 1127 1128 return NULL; 1129 } 1130 1131 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 1132 __u8 type, bdaddr_t *ba) 1133 { 1134 struct hci_conn_hash *h = &hdev->conn_hash; 1135 struct hci_conn *c; 1136 1137 rcu_read_lock(); 1138 1139 list_for_each_entry_rcu(c, &h->list, list) { 1140 if (c->type == type && !bacmp(&c->dst, ba)) { 1141 rcu_read_unlock(); 1142 return c; 1143 } 1144 } 1145 1146 rcu_read_unlock(); 1147 1148 return NULL; 1149 } 1150 1151 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 1152 bdaddr_t *ba, 1153 __u8 ba_type) 1154 { 1155 struct hci_conn_hash *h = &hdev->conn_hash; 1156 struct hci_conn *c; 1157 1158 rcu_read_lock(); 1159 1160 list_for_each_entry_rcu(c, &h->list, list) { 1161 if (c->type != LE_LINK) 1162 continue; 1163 1164 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1165 rcu_read_unlock(); 1166 return c; 1167 } 1168 } 1169 1170 rcu_read_unlock(); 1171 1172 return NULL; 1173 } 1174 1175 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev, 1176 bdaddr_t *ba, 1177 __u8 ba_type, 1178 __u8 cig, 1179 __u8 id) 1180 { 1181 struct hci_conn_hash *h = &hdev->conn_hash; 1182 struct hci_conn *c; 1183 1184 rcu_read_lock(); 1185 1186 list_for_each_entry_rcu(c, &h->list, list) { 1187 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY)) 1188 continue; 1189 1190 /* Match CIG ID if set */ 1191 if (cig != c->iso_qos.ucast.cig) 1192 continue; 1193 1194 /* Match CIS ID if set */ 1195 if (id != c->iso_qos.ucast.cis) 1196 continue; 1197 1198 /* Match destination address if set */ 1199 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) { 1200 rcu_read_unlock(); 1201 return c; 1202 } 1203 } 1204 1205 rcu_read_unlock(); 1206 1207 return NULL; 1208 } 1209 1210 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev, 1211 __u8 handle) 1212 { 1213 struct hci_conn_hash *h = &hdev->conn_hash; 1214 struct hci_conn *c; 1215 1216 rcu_read_lock(); 1217 1218 list_for_each_entry_rcu(c, &h->list, list) { 1219 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY)) 1220 continue; 1221 1222 if (handle == c->iso_qos.ucast.cig) { 1223 rcu_read_unlock(); 1224 return c; 1225 } 1226 } 1227 1228 rcu_read_unlock(); 1229 1230 return NULL; 1231 } 1232 1233 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev, 1234 __u8 handle) 1235 { 1236 struct hci_conn_hash *h = &hdev->conn_hash; 1237 struct hci_conn *c; 1238 1239 rcu_read_lock(); 1240 1241 list_for_each_entry_rcu(c, &h->list, list) { 1242 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK) 1243 continue; 1244 1245 if (handle == c->iso_qos.bcast.big) { 1246 rcu_read_unlock(); 1247 return c; 1248 } 1249 } 1250 1251 rcu_read_unlock(); 1252 1253 return NULL; 1254 } 1255 1256 static inline struct hci_conn *hci_conn_hash_lookup_big_any_dst(struct hci_dev *hdev, 1257 __u8 handle) 1258 { 1259 struct hci_conn_hash *h = &hdev->conn_hash; 1260 struct hci_conn *c; 1261 1262 rcu_read_lock(); 1263 1264 list_for_each_entry_rcu(c, &h->list, list) { 1265 if (c->type != ISO_LINK) 1266 continue; 1267 1268 if (handle != BT_ISO_QOS_BIG_UNSET && handle == c->iso_qos.bcast.big) { 1269 rcu_read_unlock(); 1270 return c; 1271 } 1272 } 1273 1274 rcu_read_unlock(); 1275 1276 return NULL; 1277 } 1278 1279 static inline struct hci_conn * 1280 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big) 1281 { 1282 struct hci_conn_hash *h = &hdev->conn_hash; 1283 struct hci_conn *c; 1284 1285 rcu_read_lock(); 1286 1287 list_for_each_entry_rcu(c, &h->list, list) { 1288 if (c->type != ISO_LINK || 1289 !test_bit(HCI_CONN_PA_SYNC, &c->flags)) 1290 continue; 1291 1292 if (c->iso_qos.bcast.big == big) { 1293 rcu_read_unlock(); 1294 return c; 1295 } 1296 } 1297 rcu_read_unlock(); 1298 1299 return NULL; 1300 } 1301 1302 static inline struct hci_conn * 1303 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle) 1304 { 1305 struct hci_conn_hash *h = &hdev->conn_hash; 1306 struct hci_conn *c; 1307 1308 rcu_read_lock(); 1309 1310 list_for_each_entry_rcu(c, &h->list, list) { 1311 if (c->type != ISO_LINK || 1312 !test_bit(HCI_CONN_PA_SYNC, &c->flags)) 1313 continue; 1314 1315 if (c->sync_handle == sync_handle) { 1316 rcu_read_unlock(); 1317 return c; 1318 } 1319 } 1320 rcu_read_unlock(); 1321 1322 return NULL; 1323 } 1324 1325 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 1326 __u8 type, __u16 state) 1327 { 1328 struct hci_conn_hash *h = &hdev->conn_hash; 1329 struct hci_conn *c; 1330 1331 rcu_read_lock(); 1332 1333 list_for_each_entry_rcu(c, &h->list, list) { 1334 if (c->type == type && c->state == state) { 1335 rcu_read_unlock(); 1336 return c; 1337 } 1338 } 1339 1340 rcu_read_unlock(); 1341 1342 return NULL; 1343 } 1344 1345 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data); 1346 static inline void hci_conn_hash_list_state(struct hci_dev *hdev, 1347 hci_conn_func_t func, __u8 type, 1348 __u16 state, void *data) 1349 { 1350 struct hci_conn_hash *h = &hdev->conn_hash; 1351 struct hci_conn *c; 1352 1353 if (!func) 1354 return; 1355 1356 rcu_read_lock(); 1357 1358 list_for_each_entry_rcu(c, &h->list, list) { 1359 if (c->type == type && c->state == state) 1360 func(c, data); 1361 } 1362 1363 rcu_read_unlock(); 1364 } 1365 1366 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 1367 { 1368 struct hci_conn_hash *h = &hdev->conn_hash; 1369 struct hci_conn *c; 1370 1371 rcu_read_lock(); 1372 1373 list_for_each_entry_rcu(c, &h->list, list) { 1374 if (c->type == LE_LINK && c->state == BT_CONNECT && 1375 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 1376 rcu_read_unlock(); 1377 return c; 1378 } 1379 } 1380 1381 rcu_read_unlock(); 1382 1383 return NULL; 1384 } 1385 1386 /* Returns true if an le connection is in the scanning state */ 1387 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev) 1388 { 1389 struct hci_conn_hash *h = &hdev->conn_hash; 1390 struct hci_conn *c; 1391 1392 rcu_read_lock(); 1393 1394 list_for_each_entry_rcu(c, &h->list, list) { 1395 if (c->type == LE_LINK && c->state == BT_CONNECT && 1396 test_bit(HCI_CONN_SCANNING, &c->flags)) { 1397 rcu_read_unlock(); 1398 return true; 1399 } 1400 } 1401 1402 rcu_read_unlock(); 1403 1404 return false; 1405 } 1406 1407 int hci_disconnect(struct hci_conn *conn, __u8 reason); 1408 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 1409 void hci_sco_setup(struct hci_conn *conn, __u8 status); 1410 bool hci_iso_setup_path(struct hci_conn *conn); 1411 int hci_le_create_cis_pending(struct hci_dev *hdev); 1412 int hci_conn_check_create_cis(struct hci_conn *conn); 1413 1414 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 1415 u8 role, u16 handle); 1416 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type, 1417 bdaddr_t *dst, u8 role); 1418 void hci_conn_del(struct hci_conn *conn); 1419 void hci_conn_hash_flush(struct hci_dev *hdev); 1420 void hci_conn_check_pending(struct hci_dev *hdev); 1421 1422 struct hci_chan *hci_chan_create(struct hci_conn *conn); 1423 void hci_chan_del(struct hci_chan *chan); 1424 void hci_chan_list_flush(struct hci_conn *conn); 1425 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 1426 1427 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 1428 u8 dst_type, u8 sec_level, 1429 u16 conn_timeout, 1430 enum conn_reasons conn_reason); 1431 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 1432 u8 dst_type, bool dst_resolved, u8 sec_level, 1433 u16 conn_timeout, u8 role); 1434 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 1435 u8 sec_level, u8 auth_type, 1436 enum conn_reasons conn_reason); 1437 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 1438 __u16 setting, struct bt_codec *codec); 1439 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, 1440 __u8 dst_type, struct bt_iso_qos *qos); 1441 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst, 1442 struct bt_iso_qos *qos, 1443 __u8 base_len, __u8 *base); 1444 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, 1445 __u8 dst_type, struct bt_iso_qos *qos); 1446 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, 1447 __u8 dst_type, struct bt_iso_qos *qos, 1448 __u8 data_len, __u8 *data); 1449 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, 1450 __u8 sid, struct bt_iso_qos *qos); 1451 int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon, 1452 struct bt_iso_qos *qos, 1453 __u16 sync_handle, __u8 num_bis, __u8 bis[]); 1454 int hci_conn_check_link_mode(struct hci_conn *conn); 1455 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 1456 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 1457 bool initiator); 1458 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 1459 1460 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 1461 1462 void hci_conn_failed(struct hci_conn *conn, u8 status); 1463 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle); 1464 1465 /* 1466 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 1467 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 1468 * working or anything else. They just guarantee that the object is available 1469 * and can be dereferenced. So you can use its locks, local variables and any 1470 * other constant data. 1471 * Before accessing runtime data, you _must_ lock the object and then check that 1472 * it is still running. As soon as you release the locks, the connection might 1473 * get dropped, though. 1474 * 1475 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 1476 * how long the underlying connection is held. So every channel that runs on the 1477 * hci_conn object calls this to prevent the connection from disappearing. As 1478 * long as you hold a device, you must also guarantee that you have a valid 1479 * reference to the device via hci_conn_get() (or the initial reference from 1480 * hci_conn_add()). 1481 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 1482 * break because nobody cares for that. But this means, we cannot use 1483 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 1484 */ 1485 1486 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 1487 { 1488 get_device(&conn->dev); 1489 return conn; 1490 } 1491 1492 static inline void hci_conn_put(struct hci_conn *conn) 1493 { 1494 put_device(&conn->dev); 1495 } 1496 1497 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn) 1498 { 1499 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1500 1501 atomic_inc(&conn->refcnt); 1502 cancel_delayed_work(&conn->disc_work); 1503 1504 return conn; 1505 } 1506 1507 static inline void hci_conn_drop(struct hci_conn *conn) 1508 { 1509 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1510 1511 if (atomic_dec_and_test(&conn->refcnt)) { 1512 unsigned long timeo; 1513 1514 switch (conn->type) { 1515 case ACL_LINK: 1516 case LE_LINK: 1517 cancel_delayed_work(&conn->idle_work); 1518 if (conn->state == BT_CONNECTED) { 1519 timeo = conn->disc_timeout; 1520 if (!conn->out) 1521 timeo *= 2; 1522 } else { 1523 timeo = 0; 1524 } 1525 break; 1526 1527 default: 1528 timeo = 0; 1529 break; 1530 } 1531 1532 cancel_delayed_work(&conn->disc_work); 1533 queue_delayed_work(conn->hdev->workqueue, 1534 &conn->disc_work, timeo); 1535 } 1536 } 1537 1538 /* ----- HCI Devices ----- */ 1539 static inline void hci_dev_put(struct hci_dev *d) 1540 { 1541 BT_DBG("%s orig refcnt %d", d->name, 1542 kref_read(&d->dev.kobj.kref)); 1543 1544 put_device(&d->dev); 1545 } 1546 1547 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1548 { 1549 BT_DBG("%s orig refcnt %d", d->name, 1550 kref_read(&d->dev.kobj.kref)); 1551 1552 get_device(&d->dev); 1553 return d; 1554 } 1555 1556 #define hci_dev_lock(d) mutex_lock(&d->lock) 1557 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1558 1559 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1560 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1561 1562 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1563 { 1564 return dev_get_drvdata(&hdev->dev); 1565 } 1566 1567 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1568 { 1569 dev_set_drvdata(&hdev->dev, data); 1570 } 1571 1572 static inline void *hci_get_priv(struct hci_dev *hdev) 1573 { 1574 return (char *)hdev + sizeof(*hdev); 1575 } 1576 1577 struct hci_dev *hci_dev_get(int index); 1578 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1579 1580 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); 1581 1582 static inline struct hci_dev *hci_alloc_dev(void) 1583 { 1584 return hci_alloc_dev_priv(0); 1585 } 1586 1587 void hci_free_dev(struct hci_dev *hdev); 1588 int hci_register_dev(struct hci_dev *hdev); 1589 void hci_unregister_dev(struct hci_dev *hdev); 1590 void hci_release_dev(struct hci_dev *hdev); 1591 int hci_register_suspend_notifier(struct hci_dev *hdev); 1592 int hci_unregister_suspend_notifier(struct hci_dev *hdev); 1593 int hci_suspend_dev(struct hci_dev *hdev); 1594 int hci_resume_dev(struct hci_dev *hdev); 1595 int hci_reset_dev(struct hci_dev *hdev); 1596 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1597 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1598 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1599 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1600 1601 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) 1602 { 1603 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 1604 hdev->msft_opcode = opcode; 1605 #endif 1606 } 1607 1608 static inline void hci_set_aosp_capable(struct hci_dev *hdev) 1609 { 1610 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 1611 hdev->aosp_capable = true; 1612 #endif 1613 } 1614 1615 static inline void hci_devcd_setup(struct hci_dev *hdev) 1616 { 1617 #ifdef CONFIG_DEV_COREDUMP 1618 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx); 1619 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout); 1620 skb_queue_head_init(&hdev->dump.dump_q); 1621 #endif 1622 } 1623 1624 int hci_dev_open(__u16 dev); 1625 int hci_dev_close(__u16 dev); 1626 int hci_dev_do_close(struct hci_dev *hdev); 1627 int hci_dev_reset(__u16 dev); 1628 int hci_dev_reset_stat(__u16 dev); 1629 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1630 int hci_get_dev_list(void __user *arg); 1631 int hci_get_dev_info(void __user *arg); 1632 int hci_get_conn_list(void __user *arg); 1633 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1634 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1635 int hci_inquiry(void __user *arg); 1636 1637 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1638 bdaddr_t *bdaddr, u8 type); 1639 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1640 struct list_head *list, bdaddr_t *bdaddr, 1641 u8 type); 1642 struct bdaddr_list_with_flags * 1643 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1644 u8 type); 1645 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1646 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1647 u8 type, u8 *peer_irk, u8 *local_irk); 1648 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1649 u8 type, u32 flags); 1650 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1651 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1652 u8 type); 1653 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1654 u8 type); 1655 void hci_bdaddr_list_clear(struct list_head *list); 1656 1657 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1658 bdaddr_t *addr, u8 addr_type); 1659 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1660 bdaddr_t *addr, u8 addr_type); 1661 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1662 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1663 void hci_conn_params_free(struct hci_conn_params *param); 1664 1665 void hci_pend_le_list_del_init(struct hci_conn_params *param); 1666 void hci_pend_le_list_add(struct hci_conn_params *param, 1667 struct list_head *list); 1668 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1669 bdaddr_t *addr, 1670 u8 addr_type); 1671 1672 void hci_uuids_clear(struct hci_dev *hdev); 1673 1674 void hci_link_keys_clear(struct hci_dev *hdev); 1675 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1676 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1677 bdaddr_t *bdaddr, u8 *val, u8 type, 1678 u8 pin_len, bool *persistent); 1679 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1680 u8 addr_type, u8 type, u8 authenticated, 1681 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1682 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1683 u8 addr_type, u8 role); 1684 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1685 void hci_smp_ltks_clear(struct hci_dev *hdev); 1686 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1687 1688 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1689 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1690 u8 addr_type); 1691 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1692 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1693 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1694 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]); 1695 void hci_blocked_keys_clear(struct hci_dev *hdev); 1696 void hci_smp_irks_clear(struct hci_dev *hdev); 1697 1698 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1699 1700 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1701 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1702 bdaddr_t *bdaddr, u8 bdaddr_type); 1703 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1704 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1705 u8 *hash256, u8 *rand256); 1706 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1707 u8 bdaddr_type); 1708 1709 void hci_adv_instances_clear(struct hci_dev *hdev); 1710 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1711 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1712 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, 1713 u32 flags, u16 adv_data_len, u8 *adv_data, 1714 u16 scan_rsp_len, u8 *scan_rsp_data, 1715 u16 timeout, u16 duration, s8 tx_power, 1716 u32 min_interval, u32 max_interval, 1717 u8 mesh_handle); 1718 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, 1719 u32 flags, u8 data_len, u8 *data, 1720 u32 min_interval, u32 max_interval); 1721 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, 1722 u16 adv_data_len, u8 *adv_data, 1723 u16 scan_rsp_len, u8 *scan_rsp_data); 1724 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1725 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1726 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance); 1727 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); 1728 1729 void hci_adv_monitors_clear(struct hci_dev *hdev); 1730 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1731 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1732 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); 1733 int hci_remove_all_adv_monitor(struct hci_dev *hdev); 1734 bool hci_is_adv_monitoring(struct hci_dev *hdev); 1735 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); 1736 1737 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1738 1739 void hci_init_sysfs(struct hci_dev *hdev); 1740 void hci_conn_init_sysfs(struct hci_conn *conn); 1741 void hci_conn_add_sysfs(struct hci_conn *conn); 1742 void hci_conn_del_sysfs(struct hci_conn *conn); 1743 1744 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1745 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent) 1746 1747 /* ----- LMP capabilities ----- */ 1748 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1749 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1750 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1751 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1752 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1753 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1754 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1755 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1756 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1757 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1758 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1759 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M) 1760 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1761 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1762 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1763 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1764 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1765 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1766 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1767 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1768 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1769 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1770 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1771 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1772 1773 /* ----- Extended LMP capabilities ----- */ 1774 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL) 1775 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL) 1776 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1777 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1778 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1779 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1780 1781 /* ----- Host capabilities ----- */ 1782 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1783 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1784 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1785 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1786 1787 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1788 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1789 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1790 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1791 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ 1792 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) 1793 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ 1794 !adv->rpa_expired) 1795 1796 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1797 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1798 1799 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M)) 1800 1801 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1802 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1803 1804 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \ 1805 !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \ 1806 &(dev)->quirks)) 1807 1808 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1809 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1810 1811 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY) 1812 1813 /* Use LL Privacy based address resolution if supported */ 1814 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \ 1815 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY)) 1816 1817 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \ 1818 (hdev->commands[39] & 0x04)) 1819 1820 #define read_key_size_capable(dev) \ 1821 ((dev)->commands[20] & 0x10 && \ 1822 !test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks)) 1823 1824 /* Use enhanced synchronous connection if command is supported and its quirk 1825 * has not been set. 1826 */ 1827 #define enhanced_sync_conn_capable(dev) \ 1828 (((dev)->commands[29] & 0x08) && \ 1829 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks)) 1830 1831 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1832 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1833 ((dev)->commands[37] & 0x40) && \ 1834 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks)) 1835 1836 /* Use ext create connection if command is supported */ 1837 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1838 1839 /* Extended advertising support */ 1840 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1841 1842 /* Maximum advertising length */ 1843 #define max_adv_len(dev) \ 1844 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH) 1845 1846 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789: 1847 * 1848 * C24: Mandatory if the LE Controller supports Connection State and either 1849 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported 1850 */ 1851 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \ 1852 ext_adv_capable(dev)) 1853 1854 /* Periodic advertising support */ 1855 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV)) 1856 1857 /* CIS Master/Slave and BIS support */ 1858 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev)) 1859 #define cis_capable(dev) \ 1860 (cis_central_capable(dev) || cis_peripheral_capable(dev)) 1861 #define cis_central_capable(dev) \ 1862 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL) 1863 #define cis_peripheral_capable(dev) \ 1864 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) 1865 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) 1866 #define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER) 1867 1868 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \ 1869 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks))) 1870 1871 /* ----- HCI protocols ----- */ 1872 #define HCI_PROTO_DEFER 0x01 1873 1874 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1875 __u8 type, __u8 *flags) 1876 { 1877 switch (type) { 1878 case ACL_LINK: 1879 return l2cap_connect_ind(hdev, bdaddr); 1880 1881 case SCO_LINK: 1882 case ESCO_LINK: 1883 return sco_connect_ind(hdev, bdaddr, flags); 1884 1885 case ISO_LINK: 1886 return iso_connect_ind(hdev, bdaddr, flags); 1887 1888 default: 1889 BT_ERR("unknown link type %d", type); 1890 return -EINVAL; 1891 } 1892 } 1893 1894 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1895 { 1896 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1897 return HCI_ERROR_REMOTE_USER_TERM; 1898 1899 return l2cap_disconn_ind(conn); 1900 } 1901 1902 /* ----- HCI callbacks ----- */ 1903 struct hci_cb { 1904 struct list_head list; 1905 1906 char *name; 1907 1908 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1909 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1910 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1911 __u8 encrypt); 1912 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1913 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1914 }; 1915 1916 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1917 { 1918 struct hci_cb *cb; 1919 1920 mutex_lock(&hci_cb_list_lock); 1921 list_for_each_entry(cb, &hci_cb_list, list) { 1922 if (cb->connect_cfm) 1923 cb->connect_cfm(conn, status); 1924 } 1925 mutex_unlock(&hci_cb_list_lock); 1926 1927 if (conn->connect_cfm_cb) 1928 conn->connect_cfm_cb(conn, status); 1929 } 1930 1931 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1932 { 1933 struct hci_cb *cb; 1934 1935 mutex_lock(&hci_cb_list_lock); 1936 list_for_each_entry(cb, &hci_cb_list, list) { 1937 if (cb->disconn_cfm) 1938 cb->disconn_cfm(conn, reason); 1939 } 1940 mutex_unlock(&hci_cb_list_lock); 1941 1942 if (conn->disconn_cfm_cb) 1943 conn->disconn_cfm_cb(conn, reason); 1944 } 1945 1946 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1947 { 1948 struct hci_cb *cb; 1949 __u8 encrypt; 1950 1951 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1952 return; 1953 1954 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1955 1956 mutex_lock(&hci_cb_list_lock); 1957 list_for_each_entry(cb, &hci_cb_list, list) { 1958 if (cb->security_cfm) 1959 cb->security_cfm(conn, status, encrypt); 1960 } 1961 mutex_unlock(&hci_cb_list_lock); 1962 1963 if (conn->security_cfm_cb) 1964 conn->security_cfm_cb(conn, status); 1965 } 1966 1967 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status) 1968 { 1969 struct hci_cb *cb; 1970 __u8 encrypt; 1971 1972 if (conn->state == BT_CONFIG) { 1973 if (!status) 1974 conn->state = BT_CONNECTED; 1975 1976 hci_connect_cfm(conn, status); 1977 hci_conn_drop(conn); 1978 return; 1979 } 1980 1981 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) 1982 encrypt = 0x00; 1983 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) 1984 encrypt = 0x02; 1985 else 1986 encrypt = 0x01; 1987 1988 if (!status) { 1989 if (conn->sec_level == BT_SECURITY_SDP) 1990 conn->sec_level = BT_SECURITY_LOW; 1991 1992 if (conn->pending_sec_level > conn->sec_level) 1993 conn->sec_level = conn->pending_sec_level; 1994 } 1995 1996 mutex_lock(&hci_cb_list_lock); 1997 list_for_each_entry(cb, &hci_cb_list, list) { 1998 if (cb->security_cfm) 1999 cb->security_cfm(conn, status, encrypt); 2000 } 2001 mutex_unlock(&hci_cb_list_lock); 2002 2003 if (conn->security_cfm_cb) 2004 conn->security_cfm_cb(conn, status); 2005 } 2006 2007 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 2008 { 2009 struct hci_cb *cb; 2010 2011 mutex_lock(&hci_cb_list_lock); 2012 list_for_each_entry(cb, &hci_cb_list, list) { 2013 if (cb->key_change_cfm) 2014 cb->key_change_cfm(conn, status); 2015 } 2016 mutex_unlock(&hci_cb_list_lock); 2017 } 2018 2019 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 2020 __u8 role) 2021 { 2022 struct hci_cb *cb; 2023 2024 mutex_lock(&hci_cb_list_lock); 2025 list_for_each_entry(cb, &hci_cb_list, list) { 2026 if (cb->role_switch_cfm) 2027 cb->role_switch_cfm(conn, status, role); 2028 } 2029 mutex_unlock(&hci_cb_list_lock); 2030 } 2031 2032 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 2033 { 2034 if (addr_type != ADDR_LE_DEV_RANDOM) 2035 return false; 2036 2037 if ((bdaddr->b[5] & 0xc0) == 0x40) 2038 return true; 2039 2040 return false; 2041 } 2042 2043 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 2044 { 2045 if (addr_type == ADDR_LE_DEV_PUBLIC) 2046 return true; 2047 2048 /* Check for Random Static address type */ 2049 if ((addr->b[5] & 0xc0) == 0xc0) 2050 return true; 2051 2052 return false; 2053 } 2054 2055 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 2056 bdaddr_t *bdaddr, u8 addr_type) 2057 { 2058 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 2059 return NULL; 2060 2061 return hci_find_irk_by_rpa(hdev, bdaddr); 2062 } 2063 2064 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 2065 u16 to_multiplier) 2066 { 2067 u16 max_latency; 2068 2069 if (min > max) { 2070 BT_WARN("min %d > max %d", min, max); 2071 return -EINVAL; 2072 } 2073 2074 if (min < 6) { 2075 BT_WARN("min %d < 6", min); 2076 return -EINVAL; 2077 } 2078 2079 if (max > 3200) { 2080 BT_WARN("max %d > 3200", max); 2081 return -EINVAL; 2082 } 2083 2084 if (to_multiplier < 10) { 2085 BT_WARN("to_multiplier %d < 10", to_multiplier); 2086 return -EINVAL; 2087 } 2088 2089 if (to_multiplier > 3200) { 2090 BT_WARN("to_multiplier %d > 3200", to_multiplier); 2091 return -EINVAL; 2092 } 2093 2094 if (max >= to_multiplier * 8) { 2095 BT_WARN("max %d >= to_multiplier %d * 8", max, to_multiplier); 2096 return -EINVAL; 2097 } 2098 2099 max_latency = (to_multiplier * 4 / max) - 1; 2100 if (latency > 499) { 2101 BT_WARN("latency %d > 499", latency); 2102 return -EINVAL; 2103 } 2104 2105 if (latency > max_latency) { 2106 BT_WARN("latency %d > max_latency %d", latency, max_latency); 2107 return -EINVAL; 2108 } 2109 2110 return 0; 2111 } 2112 2113 int hci_register_cb(struct hci_cb *hcb); 2114 int hci_unregister_cb(struct hci_cb *hcb); 2115 2116 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 2117 const void *param); 2118 2119 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 2120 const void *param); 2121 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 2122 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 2123 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); 2124 2125 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 2126 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); 2127 2128 u32 hci_conn_get_phy(struct hci_conn *conn); 2129 2130 /* ----- HCI Sockets ----- */ 2131 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 2132 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 2133 int flag, struct sock *skip_sk); 2134 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 2135 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 2136 void *data, u16 data_len, ktime_t tstamp, 2137 int flag, struct sock *skip_sk); 2138 2139 void hci_sock_dev_event(struct hci_dev *hdev, int event); 2140 2141 #define HCI_MGMT_VAR_LEN BIT(0) 2142 #define HCI_MGMT_NO_HDEV BIT(1) 2143 #define HCI_MGMT_UNTRUSTED BIT(2) 2144 #define HCI_MGMT_UNCONFIGURED BIT(3) 2145 #define HCI_MGMT_HDEV_OPTIONAL BIT(4) 2146 2147 struct hci_mgmt_handler { 2148 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 2149 u16 data_len); 2150 size_t data_len; 2151 unsigned long flags; 2152 }; 2153 2154 struct hci_mgmt_chan { 2155 struct list_head list; 2156 unsigned short channel; 2157 size_t handler_count; 2158 const struct hci_mgmt_handler *handlers; 2159 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 2160 }; 2161 2162 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 2163 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 2164 2165 /* Management interface */ 2166 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 2167 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 2168 BIT(BDADDR_LE_RANDOM)) 2169 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 2170 BIT(BDADDR_LE_PUBLIC) | \ 2171 BIT(BDADDR_LE_RANDOM)) 2172 2173 /* These LE scan and inquiry parameters were chosen according to LE General 2174 * Discovery Procedure specification. 2175 */ 2176 #define DISCOV_LE_SCAN_WIN 0x12 2177 #define DISCOV_LE_SCAN_INT 0x12 2178 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 2179 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 2180 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 2181 #define DISCOV_BREDR_INQUIRY_LEN 0x08 2182 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 2183 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ 2184 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ 2185 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */ 2186 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */ 2187 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */ 2188 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */ 2189 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10) 2190 2191 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */ 2192 2193 void mgmt_fill_version_info(void *ver); 2194 int mgmt_new_settings(struct hci_dev *hdev); 2195 void mgmt_index_added(struct hci_dev *hdev); 2196 void mgmt_index_removed(struct hci_dev *hdev); 2197 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 2198 void mgmt_power_on(struct hci_dev *hdev, int err); 2199 void __mgmt_power_off(struct hci_dev *hdev); 2200 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 2201 bool persistent); 2202 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 2203 u8 *name, u8 name_len); 2204 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 2205 u8 link_type, u8 addr_type, u8 reason, 2206 bool mgmt_connected); 2207 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 2208 u8 link_type, u8 addr_type, u8 status); 2209 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2210 u8 addr_type, u8 status); 2211 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 2212 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2213 u8 status); 2214 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2215 u8 status); 2216 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2217 u8 link_type, u8 addr_type, u32 value, 2218 u8 confirm_hint); 2219 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2220 u8 link_type, u8 addr_type, u8 status); 2221 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2222 u8 link_type, u8 addr_type, u8 status); 2223 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2224 u8 link_type, u8 addr_type); 2225 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2226 u8 link_type, u8 addr_type, u8 status); 2227 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2228 u8 link_type, u8 addr_type, u8 status); 2229 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 2230 u8 link_type, u8 addr_type, u32 passkey, 2231 u8 entered); 2232 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 2233 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 2234 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 2235 u8 status); 2236 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 2237 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 2238 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 2239 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2240 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 2241 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len, 2242 u64 instant); 2243 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2244 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 2245 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 2246 void mgmt_suspending(struct hci_dev *hdev, u8 state); 2247 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr, 2248 u8 addr_type); 2249 bool mgmt_powering_down(struct hci_dev *hdev); 2250 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 2251 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 2252 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 2253 bool persistent); 2254 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 2255 u8 bdaddr_type, u8 store_hint, u16 min_interval, 2256 u16 max_interval, u16 latency, u16 timeout); 2257 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 2258 bool mgmt_get_connectable(struct hci_dev *hdev); 2259 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 2260 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 2261 u8 instance); 2262 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 2263 u8 instance); 2264 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); 2265 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 2266 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, 2267 bdaddr_t *bdaddr, u8 addr_type); 2268 2269 int hci_abort_conn(struct hci_conn *conn, u8 reason); 2270 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 2271 u16 to_multiplier); 2272 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 2273 __u8 ltk[16], __u8 key_size); 2274 2275 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 2276 u8 *bdaddr_type); 2277 2278 #define SCO_AIRMODE_MASK 0x0003 2279 #define SCO_AIRMODE_CVSD 0x0000 2280 #define SCO_AIRMODE_TRANSP 0x0003 2281 2282 #define LOCAL_CODEC_ACL_MASK BIT(0) 2283 #define LOCAL_CODEC_SCO_MASK BIT(1) 2284 2285 #define TRANSPORT_TYPE_MAX 0x04 2286 2287 #endif /* __HCI_CORE_H */ 2288