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