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_UNSET 0xffff 325 #define HCI_CONN_HANDLE_MAX 0x0eff 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 #ifdef CONFIG_DEV_COREDUMP 597 struct hci_devcoredump dump; 598 #endif 599 600 struct device dev; 601 602 struct rfkill *rfkill; 603 604 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 605 hci_conn_flags_t conn_flags; 606 607 __s8 adv_tx_power; 608 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 609 __u8 adv_data_len; 610 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 611 __u8 scan_rsp_data_len; 612 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 613 __u8 per_adv_data_len; 614 615 struct list_head adv_instances; 616 unsigned int adv_instance_cnt; 617 __u8 cur_adv_instance; 618 __u16 adv_instance_timeout; 619 struct delayed_work adv_instance_expire; 620 621 struct idr adv_monitors_idr; 622 unsigned int adv_monitors_cnt; 623 624 __u8 irk[16]; 625 __u32 rpa_timeout; 626 struct delayed_work rpa_expired; 627 bdaddr_t rpa; 628 629 struct delayed_work mesh_send_done; 630 631 enum { 632 INTERLEAVE_SCAN_NONE, 633 INTERLEAVE_SCAN_NO_FILTER, 634 INTERLEAVE_SCAN_ALLOWLIST 635 } interleave_scan_state; 636 637 struct delayed_work interleave_scan; 638 639 struct list_head monitored_devices; 640 bool advmon_pend_notify; 641 642 #if IS_ENABLED(CONFIG_BT_LEDS) 643 struct led_trigger *power_led; 644 #endif 645 646 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 647 __u16 msft_opcode; 648 void *msft_data; 649 bool msft_curve_validity; 650 #endif 651 652 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 653 bool aosp_capable; 654 bool aosp_quality_report; 655 #endif 656 657 int (*open)(struct hci_dev *hdev); 658 int (*close)(struct hci_dev *hdev); 659 int (*flush)(struct hci_dev *hdev); 660 int (*setup)(struct hci_dev *hdev); 661 int (*shutdown)(struct hci_dev *hdev); 662 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 663 void (*notify)(struct hci_dev *hdev, unsigned int evt); 664 void (*hw_error)(struct hci_dev *hdev, u8 code); 665 int (*post_init)(struct hci_dev *hdev); 666 int (*set_diag)(struct hci_dev *hdev, bool enable); 667 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 668 void (*cmd_timeout)(struct hci_dev *hdev); 669 void (*reset)(struct hci_dev *hdev); 670 bool (*wakeup)(struct hci_dev *hdev); 671 int (*set_quality_report)(struct hci_dev *hdev, bool enable); 672 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path); 673 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type, 674 struct bt_codec *codec, __u8 *vnd_len, 675 __u8 **vnd_data); 676 }; 677 678 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 679 680 enum conn_reasons { 681 CONN_REASON_PAIR_DEVICE, 682 CONN_REASON_L2CAP_CHAN, 683 CONN_REASON_SCO_CONNECT, 684 CONN_REASON_ISO_CONNECT, 685 }; 686 687 struct hci_conn { 688 struct list_head list; 689 690 atomic_t refcnt; 691 692 bdaddr_t dst; 693 __u8 dst_type; 694 bdaddr_t src; 695 __u8 src_type; 696 bdaddr_t init_addr; 697 __u8 init_addr_type; 698 bdaddr_t resp_addr; 699 __u8 resp_addr_type; 700 __u8 adv_instance; 701 __u16 handle; 702 __u16 sync_handle; 703 __u16 state; 704 __u8 mode; 705 __u8 type; 706 __u8 role; 707 bool out; 708 __u8 attempt; 709 __u8 dev_class[3]; 710 __u8 features[HCI_MAX_PAGES][8]; 711 __u16 pkt_type; 712 __u16 link_policy; 713 __u8 key_type; 714 __u8 auth_type; 715 __u8 sec_level; 716 __u8 pending_sec_level; 717 __u8 pin_length; 718 __u8 enc_key_size; 719 __u8 io_capability; 720 __u32 passkey_notify; 721 __u8 passkey_entered; 722 __u16 disc_timeout; 723 __u16 conn_timeout; 724 __u16 setting; 725 __u16 auth_payload_timeout; 726 __u16 le_conn_min_interval; 727 __u16 le_conn_max_interval; 728 __u16 le_conn_interval; 729 __u16 le_conn_latency; 730 __u16 le_supv_timeout; 731 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 732 __u8 le_adv_data_len; 733 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH]; 734 __u8 le_per_adv_data_len; 735 __u8 le_tx_phy; 736 __u8 le_rx_phy; 737 __s8 rssi; 738 __s8 tx_power; 739 __s8 max_tx_power; 740 struct bt_iso_qos iso_qos; 741 unsigned long flags; 742 743 enum conn_reasons conn_reason; 744 745 __u32 clock; 746 __u16 clock_accuracy; 747 748 unsigned long conn_info_timestamp; 749 750 __u8 remote_cap; 751 __u8 remote_auth; 752 __u8 remote_id; 753 754 unsigned int sent; 755 756 struct sk_buff_head data_q; 757 struct list_head chan_list; 758 759 struct delayed_work disc_work; 760 struct delayed_work auto_accept_work; 761 struct delayed_work idle_work; 762 struct delayed_work le_conn_timeout; 763 struct work_struct le_scan_cleanup; 764 765 struct device dev; 766 struct dentry *debugfs; 767 768 struct hci_dev *hdev; 769 void *l2cap_data; 770 void *sco_data; 771 void *iso_data; 772 struct amp_mgr *amp_mgr; 773 774 struct list_head link_list; 775 struct hci_conn *parent; 776 struct hci_link *link; 777 778 struct bt_codec codec; 779 780 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 781 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 782 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 783 784 void (*cleanup)(struct hci_conn *conn); 785 }; 786 787 struct hci_link { 788 struct list_head list; 789 struct hci_conn *conn; 790 }; 791 792 struct hci_chan { 793 struct list_head list; 794 __u16 handle; 795 struct hci_conn *conn; 796 struct sk_buff_head data_q; 797 unsigned int sent; 798 __u8 state; 799 bool amp; 800 }; 801 802 struct hci_conn_params { 803 struct list_head list; 804 struct list_head action; 805 806 bdaddr_t addr; 807 u8 addr_type; 808 809 u16 conn_min_interval; 810 u16 conn_max_interval; 811 u16 conn_latency; 812 u16 supervision_timeout; 813 814 enum { 815 HCI_AUTO_CONN_DISABLED, 816 HCI_AUTO_CONN_REPORT, 817 HCI_AUTO_CONN_DIRECT, 818 HCI_AUTO_CONN_ALWAYS, 819 HCI_AUTO_CONN_LINK_LOSS, 820 HCI_AUTO_CONN_EXPLICIT, 821 } auto_connect; 822 823 struct hci_conn *conn; 824 bool explicit_connect; 825 hci_conn_flags_t flags; 826 u8 privacy_mode; 827 }; 828 829 extern struct list_head hci_dev_list; 830 extern struct list_head hci_cb_list; 831 extern rwlock_t hci_dev_list_lock; 832 extern struct mutex hci_cb_list_lock; 833 834 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 835 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 836 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 837 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 838 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 839 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 840 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 841 842 #define hci_dev_clear_volatile_flags(hdev) \ 843 do { \ 844 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 845 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 846 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\ 847 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 848 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \ 849 } while (0) 850 851 #define hci_dev_le_state_simultaneous(hdev) \ 852 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \ 853 (hdev->le_states[4] & 0x08) && /* Central */ \ 854 (hdev->le_states[4] & 0x40) && /* Peripheral */ \ 855 (hdev->le_states[3] & 0x10)) /* Simultaneous */ 856 857 /* ----- HCI interface to upper protocols ----- */ 858 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 859 int l2cap_disconn_ind(struct hci_conn *hcon); 860 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 861 862 #if IS_ENABLED(CONFIG_BT_BREDR) 863 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 864 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 865 #else 866 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 867 __u8 *flags) 868 { 869 return 0; 870 } 871 872 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 873 { 874 } 875 #endif 876 877 #if IS_ENABLED(CONFIG_BT_LE) 878 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 879 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 880 #else 881 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 882 __u8 *flags) 883 { 884 return 0; 885 } 886 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, 887 u16 flags) 888 { 889 } 890 #endif 891 892 /* ----- Inquiry cache ----- */ 893 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 894 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 895 896 static inline void discovery_init(struct hci_dev *hdev) 897 { 898 hdev->discovery.state = DISCOVERY_STOPPED; 899 INIT_LIST_HEAD(&hdev->discovery.all); 900 INIT_LIST_HEAD(&hdev->discovery.unknown); 901 INIT_LIST_HEAD(&hdev->discovery.resolve); 902 hdev->discovery.report_invalid_rssi = true; 903 hdev->discovery.rssi = HCI_RSSI_INVALID; 904 } 905 906 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 907 { 908 hdev->discovery.result_filtering = false; 909 hdev->discovery.report_invalid_rssi = true; 910 hdev->discovery.rssi = HCI_RSSI_INVALID; 911 hdev->discovery.uuid_count = 0; 912 kfree(hdev->discovery.uuids); 913 hdev->discovery.uuids = NULL; 914 hdev->discovery.scan_start = 0; 915 hdev->discovery.scan_duration = 0; 916 } 917 918 bool hci_discovery_active(struct hci_dev *hdev); 919 920 void hci_discovery_set_state(struct hci_dev *hdev, int state); 921 922 static inline int inquiry_cache_empty(struct hci_dev *hdev) 923 { 924 return list_empty(&hdev->discovery.all); 925 } 926 927 static inline long inquiry_cache_age(struct hci_dev *hdev) 928 { 929 struct discovery_state *c = &hdev->discovery; 930 return jiffies - c->timestamp; 931 } 932 933 static inline long inquiry_entry_age(struct inquiry_entry *e) 934 { 935 return jiffies - e->timestamp; 936 } 937 938 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 939 bdaddr_t *bdaddr); 940 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 941 bdaddr_t *bdaddr); 942 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 943 bdaddr_t *bdaddr, 944 int state); 945 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 946 struct inquiry_entry *ie); 947 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 948 bool name_known); 949 void hci_inquiry_cache_flush(struct hci_dev *hdev); 950 951 /* ----- HCI Connections ----- */ 952 enum { 953 HCI_CONN_AUTH_PEND, 954 HCI_CONN_REAUTH_PEND, 955 HCI_CONN_ENCRYPT_PEND, 956 HCI_CONN_RSWITCH_PEND, 957 HCI_CONN_MODE_CHANGE_PEND, 958 HCI_CONN_SCO_SETUP_PEND, 959 HCI_CONN_MGMT_CONNECTED, 960 HCI_CONN_SSP_ENABLED, 961 HCI_CONN_SC_ENABLED, 962 HCI_CONN_AES_CCM, 963 HCI_CONN_POWER_SAVE, 964 HCI_CONN_FLUSH_KEY, 965 HCI_CONN_ENCRYPT, 966 HCI_CONN_AUTH, 967 HCI_CONN_SECURE, 968 HCI_CONN_FIPS, 969 HCI_CONN_STK_ENCRYPT, 970 HCI_CONN_AUTH_INITIATOR, 971 HCI_CONN_DROP, 972 HCI_CONN_CANCEL, 973 HCI_CONN_PARAM_REMOVAL_PEND, 974 HCI_CONN_NEW_LINK_KEY, 975 HCI_CONN_SCANNING, 976 HCI_CONN_AUTH_FAILURE, 977 HCI_CONN_PER_ADV, 978 }; 979 980 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 981 { 982 struct hci_dev *hdev = conn->hdev; 983 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 984 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 985 } 986 987 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 988 { 989 struct hci_dev *hdev = conn->hdev; 990 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 991 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 992 } 993 994 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 995 { 996 struct hci_conn_hash *h = &hdev->conn_hash; 997 list_add_tail_rcu(&c->list, &h->list); 998 switch (c->type) { 999 case ACL_LINK: 1000 h->acl_num++; 1001 break; 1002 case AMP_LINK: 1003 h->amp_num++; 1004 break; 1005 case LE_LINK: 1006 h->le_num++; 1007 if (c->role == HCI_ROLE_SLAVE) 1008 h->le_num_peripheral++; 1009 break; 1010 case SCO_LINK: 1011 case ESCO_LINK: 1012 h->sco_num++; 1013 break; 1014 case ISO_LINK: 1015 h->iso_num++; 1016 break; 1017 } 1018 } 1019 1020 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 1021 { 1022 struct hci_conn_hash *h = &hdev->conn_hash; 1023 1024 list_del_rcu(&c->list); 1025 synchronize_rcu(); 1026 1027 switch (c->type) { 1028 case ACL_LINK: 1029 h->acl_num--; 1030 break; 1031 case AMP_LINK: 1032 h->amp_num--; 1033 break; 1034 case LE_LINK: 1035 h->le_num--; 1036 if (c->role == HCI_ROLE_SLAVE) 1037 h->le_num_peripheral--; 1038 break; 1039 case SCO_LINK: 1040 case ESCO_LINK: 1041 h->sco_num--; 1042 break; 1043 case ISO_LINK: 1044 h->iso_num--; 1045 break; 1046 } 1047 } 1048 1049 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 1050 { 1051 struct hci_conn_hash *h = &hdev->conn_hash; 1052 switch (type) { 1053 case ACL_LINK: 1054 return h->acl_num; 1055 case AMP_LINK: 1056 return h->amp_num; 1057 case LE_LINK: 1058 return h->le_num; 1059 case SCO_LINK: 1060 case ESCO_LINK: 1061 return h->sco_num; 1062 case ISO_LINK: 1063 return h->iso_num; 1064 default: 1065 return 0; 1066 } 1067 } 1068 1069 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 1070 { 1071 struct hci_conn_hash *c = &hdev->conn_hash; 1072 1073 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num; 1074 } 1075 1076 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 1077 { 1078 struct hci_conn_hash *h = &hdev->conn_hash; 1079 struct hci_conn *c; 1080 __u8 type = INVALID_LINK; 1081 1082 rcu_read_lock(); 1083 1084 list_for_each_entry_rcu(c, &h->list, list) { 1085 if (c->handle == handle) { 1086 type = c->type; 1087 break; 1088 } 1089 } 1090 1091 rcu_read_unlock(); 1092 1093 return type; 1094 } 1095 1096 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev, 1097 bdaddr_t *ba, 1098 __u8 big, __u8 bis) 1099 { 1100 struct hci_conn_hash *h = &hdev->conn_hash; 1101 struct hci_conn *c; 1102 1103 rcu_read_lock(); 1104 1105 list_for_each_entry_rcu(c, &h->list, list) { 1106 if (bacmp(&c->dst, ba) || c->type != ISO_LINK) 1107 continue; 1108 1109 if (c->iso_qos.bcast.big == big && c->iso_qos.bcast.bis == bis) { 1110 rcu_read_unlock(); 1111 return c; 1112 } 1113 } 1114 rcu_read_unlock(); 1115 1116 return NULL; 1117 } 1118 1119 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 1120 __u16 handle) 1121 { 1122 struct hci_conn_hash *h = &hdev->conn_hash; 1123 struct hci_conn *c; 1124 1125 rcu_read_lock(); 1126 1127 list_for_each_entry_rcu(c, &h->list, list) { 1128 if (c->handle == handle) { 1129 rcu_read_unlock(); 1130 return c; 1131 } 1132 } 1133 rcu_read_unlock(); 1134 1135 return NULL; 1136 } 1137 1138 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 1139 __u8 type, bdaddr_t *ba) 1140 { 1141 struct hci_conn_hash *h = &hdev->conn_hash; 1142 struct hci_conn *c; 1143 1144 rcu_read_lock(); 1145 1146 list_for_each_entry_rcu(c, &h->list, list) { 1147 if (c->type == type && !bacmp(&c->dst, ba)) { 1148 rcu_read_unlock(); 1149 return c; 1150 } 1151 } 1152 1153 rcu_read_unlock(); 1154 1155 return NULL; 1156 } 1157 1158 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 1159 bdaddr_t *ba, 1160 __u8 ba_type) 1161 { 1162 struct hci_conn_hash *h = &hdev->conn_hash; 1163 struct hci_conn *c; 1164 1165 rcu_read_lock(); 1166 1167 list_for_each_entry_rcu(c, &h->list, list) { 1168 if (c->type != LE_LINK) 1169 continue; 1170 1171 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1172 rcu_read_unlock(); 1173 return c; 1174 } 1175 } 1176 1177 rcu_read_unlock(); 1178 1179 return NULL; 1180 } 1181 1182 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev, 1183 bdaddr_t *ba, 1184 __u8 ba_type, 1185 __u8 cig, 1186 __u8 id) 1187 { 1188 struct hci_conn_hash *h = &hdev->conn_hash; 1189 struct hci_conn *c; 1190 1191 rcu_read_lock(); 1192 1193 list_for_each_entry_rcu(c, &h->list, list) { 1194 if (c->type != ISO_LINK) 1195 continue; 1196 1197 /* Match CIG ID if set */ 1198 if (cig != BT_ISO_QOS_CIG_UNSET && cig != c->iso_qos.ucast.cig) 1199 continue; 1200 1201 /* Match CIS ID if set */ 1202 if (id != BT_ISO_QOS_CIS_UNSET && id != c->iso_qos.ucast.cis) 1203 continue; 1204 1205 /* Match destination address if set */ 1206 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) { 1207 rcu_read_unlock(); 1208 return c; 1209 } 1210 } 1211 1212 rcu_read_unlock(); 1213 1214 return NULL; 1215 } 1216 1217 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev, 1218 __u8 handle) 1219 { 1220 struct hci_conn_hash *h = &hdev->conn_hash; 1221 struct hci_conn *c; 1222 1223 rcu_read_lock(); 1224 1225 list_for_each_entry_rcu(c, &h->list, list) { 1226 if (c->type != ISO_LINK) 1227 continue; 1228 1229 if (handle == c->iso_qos.ucast.cig) { 1230 rcu_read_unlock(); 1231 return c; 1232 } 1233 } 1234 1235 rcu_read_unlock(); 1236 1237 return NULL; 1238 } 1239 1240 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev, 1241 __u8 handle) 1242 { 1243 struct hci_conn_hash *h = &hdev->conn_hash; 1244 struct hci_conn *c; 1245 1246 rcu_read_lock(); 1247 1248 list_for_each_entry_rcu(c, &h->list, list) { 1249 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK) 1250 continue; 1251 1252 if (handle == c->iso_qos.bcast.big) { 1253 rcu_read_unlock(); 1254 return c; 1255 } 1256 } 1257 1258 rcu_read_unlock(); 1259 1260 return NULL; 1261 } 1262 1263 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 1264 __u8 type, __u16 state) 1265 { 1266 struct hci_conn_hash *h = &hdev->conn_hash; 1267 struct hci_conn *c; 1268 1269 rcu_read_lock(); 1270 1271 list_for_each_entry_rcu(c, &h->list, list) { 1272 if (c->type == type && c->state == state) { 1273 rcu_read_unlock(); 1274 return c; 1275 } 1276 } 1277 1278 rcu_read_unlock(); 1279 1280 return NULL; 1281 } 1282 1283 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data); 1284 static inline void hci_conn_hash_list_state(struct hci_dev *hdev, 1285 hci_conn_func_t func, __u8 type, 1286 __u16 state, void *data) 1287 { 1288 struct hci_conn_hash *h = &hdev->conn_hash; 1289 struct hci_conn *c; 1290 1291 if (!func) 1292 return; 1293 1294 rcu_read_lock(); 1295 1296 list_for_each_entry_rcu(c, &h->list, list) { 1297 if (c->type == type && c->state == state) 1298 func(c, data); 1299 } 1300 1301 rcu_read_unlock(); 1302 } 1303 1304 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 1305 { 1306 struct hci_conn_hash *h = &hdev->conn_hash; 1307 struct hci_conn *c; 1308 1309 rcu_read_lock(); 1310 1311 list_for_each_entry_rcu(c, &h->list, list) { 1312 if (c->type == LE_LINK && c->state == BT_CONNECT && 1313 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 1314 rcu_read_unlock(); 1315 return c; 1316 } 1317 } 1318 1319 rcu_read_unlock(); 1320 1321 return NULL; 1322 } 1323 1324 int hci_disconnect(struct hci_conn *conn, __u8 reason); 1325 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 1326 void hci_sco_setup(struct hci_conn *conn, __u8 status); 1327 bool hci_iso_setup_path(struct hci_conn *conn); 1328 int hci_le_create_cis(struct hci_conn *conn); 1329 1330 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 1331 u8 role); 1332 void hci_conn_del(struct hci_conn *conn); 1333 void hci_conn_hash_flush(struct hci_dev *hdev); 1334 void hci_conn_check_pending(struct hci_dev *hdev); 1335 1336 struct hci_chan *hci_chan_create(struct hci_conn *conn); 1337 void hci_chan_del(struct hci_chan *chan); 1338 void hci_chan_list_flush(struct hci_conn *conn); 1339 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 1340 1341 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 1342 u8 dst_type, u8 sec_level, 1343 u16 conn_timeout, 1344 enum conn_reasons conn_reason); 1345 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 1346 u8 dst_type, bool dst_resolved, u8 sec_level, 1347 u16 conn_timeout, u8 role); 1348 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 1349 u8 sec_level, u8 auth_type, 1350 enum conn_reasons conn_reason); 1351 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 1352 __u16 setting, struct bt_codec *codec); 1353 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, 1354 __u8 dst_type, struct bt_iso_qos *qos); 1355 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, 1356 __u8 dst_type, struct bt_iso_qos *qos); 1357 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, 1358 __u8 dst_type, struct bt_iso_qos *qos, 1359 __u8 data_len, __u8 *data); 1360 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, 1361 __u8 sid, struct bt_iso_qos *qos); 1362 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos, 1363 __u16 sync_handle, __u8 num_bis, __u8 bis[]); 1364 int hci_conn_check_link_mode(struct hci_conn *conn); 1365 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 1366 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 1367 bool initiator); 1368 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 1369 1370 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 1371 1372 void hci_conn_failed(struct hci_conn *conn, u8 status); 1373 1374 /* 1375 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 1376 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 1377 * working or anything else. They just guarantee that the object is available 1378 * and can be dereferenced. So you can use its locks, local variables and any 1379 * other constant data. 1380 * Before accessing runtime data, you _must_ lock the object and then check that 1381 * it is still running. As soon as you release the locks, the connection might 1382 * get dropped, though. 1383 * 1384 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 1385 * how long the underlying connection is held. So every channel that runs on the 1386 * hci_conn object calls this to prevent the connection from disappearing. As 1387 * long as you hold a device, you must also guarantee that you have a valid 1388 * reference to the device via hci_conn_get() (or the initial reference from 1389 * hci_conn_add()). 1390 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 1391 * break because nobody cares for that. But this means, we cannot use 1392 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 1393 */ 1394 1395 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 1396 { 1397 get_device(&conn->dev); 1398 return conn; 1399 } 1400 1401 static inline void hci_conn_put(struct hci_conn *conn) 1402 { 1403 put_device(&conn->dev); 1404 } 1405 1406 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn) 1407 { 1408 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1409 1410 atomic_inc(&conn->refcnt); 1411 cancel_delayed_work(&conn->disc_work); 1412 1413 return conn; 1414 } 1415 1416 static inline void hci_conn_drop(struct hci_conn *conn) 1417 { 1418 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1419 1420 if (atomic_dec_and_test(&conn->refcnt)) { 1421 unsigned long timeo; 1422 1423 switch (conn->type) { 1424 case ACL_LINK: 1425 case LE_LINK: 1426 cancel_delayed_work(&conn->idle_work); 1427 if (conn->state == BT_CONNECTED) { 1428 timeo = conn->disc_timeout; 1429 if (!conn->out) 1430 timeo *= 2; 1431 } else { 1432 timeo = 0; 1433 } 1434 break; 1435 1436 case AMP_LINK: 1437 timeo = conn->disc_timeout; 1438 break; 1439 1440 default: 1441 timeo = 0; 1442 break; 1443 } 1444 1445 cancel_delayed_work(&conn->disc_work); 1446 queue_delayed_work(conn->hdev->workqueue, 1447 &conn->disc_work, timeo); 1448 } 1449 } 1450 1451 /* ----- HCI Devices ----- */ 1452 static inline void hci_dev_put(struct hci_dev *d) 1453 { 1454 BT_DBG("%s orig refcnt %d", d->name, 1455 kref_read(&d->dev.kobj.kref)); 1456 1457 put_device(&d->dev); 1458 } 1459 1460 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1461 { 1462 BT_DBG("%s orig refcnt %d", d->name, 1463 kref_read(&d->dev.kobj.kref)); 1464 1465 get_device(&d->dev); 1466 return d; 1467 } 1468 1469 #define hci_dev_lock(d) mutex_lock(&d->lock) 1470 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1471 1472 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1473 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1474 1475 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1476 { 1477 return dev_get_drvdata(&hdev->dev); 1478 } 1479 1480 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1481 { 1482 dev_set_drvdata(&hdev->dev, data); 1483 } 1484 1485 static inline void *hci_get_priv(struct hci_dev *hdev) 1486 { 1487 return (char *)hdev + sizeof(*hdev); 1488 } 1489 1490 struct hci_dev *hci_dev_get(int index); 1491 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1492 1493 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); 1494 1495 static inline struct hci_dev *hci_alloc_dev(void) 1496 { 1497 return hci_alloc_dev_priv(0); 1498 } 1499 1500 void hci_free_dev(struct hci_dev *hdev); 1501 int hci_register_dev(struct hci_dev *hdev); 1502 void hci_unregister_dev(struct hci_dev *hdev); 1503 void hci_release_dev(struct hci_dev *hdev); 1504 int hci_register_suspend_notifier(struct hci_dev *hdev); 1505 int hci_unregister_suspend_notifier(struct hci_dev *hdev); 1506 int hci_suspend_dev(struct hci_dev *hdev); 1507 int hci_resume_dev(struct hci_dev *hdev); 1508 int hci_reset_dev(struct hci_dev *hdev); 1509 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1510 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1511 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1512 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1513 1514 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) 1515 { 1516 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 1517 hdev->msft_opcode = opcode; 1518 #endif 1519 } 1520 1521 static inline void hci_set_aosp_capable(struct hci_dev *hdev) 1522 { 1523 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 1524 hdev->aosp_capable = true; 1525 #endif 1526 } 1527 1528 static inline void hci_devcd_setup(struct hci_dev *hdev) 1529 { 1530 #ifdef CONFIG_DEV_COREDUMP 1531 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx); 1532 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout); 1533 skb_queue_head_init(&hdev->dump.dump_q); 1534 #endif 1535 } 1536 1537 int hci_dev_open(__u16 dev); 1538 int hci_dev_close(__u16 dev); 1539 int hci_dev_do_close(struct hci_dev *hdev); 1540 int hci_dev_reset(__u16 dev); 1541 int hci_dev_reset_stat(__u16 dev); 1542 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1543 int hci_get_dev_list(void __user *arg); 1544 int hci_get_dev_info(void __user *arg); 1545 int hci_get_conn_list(void __user *arg); 1546 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1547 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1548 int hci_inquiry(void __user *arg); 1549 1550 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1551 bdaddr_t *bdaddr, u8 type); 1552 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1553 struct list_head *list, bdaddr_t *bdaddr, 1554 u8 type); 1555 struct bdaddr_list_with_flags * 1556 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1557 u8 type); 1558 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1559 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1560 u8 type, u8 *peer_irk, u8 *local_irk); 1561 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1562 u8 type, u32 flags); 1563 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1564 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1565 u8 type); 1566 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1567 u8 type); 1568 void hci_bdaddr_list_clear(struct list_head *list); 1569 1570 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1571 bdaddr_t *addr, u8 addr_type); 1572 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1573 bdaddr_t *addr, u8 addr_type); 1574 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1575 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1576 1577 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1578 bdaddr_t *addr, 1579 u8 addr_type); 1580 1581 void hci_uuids_clear(struct hci_dev *hdev); 1582 1583 void hci_link_keys_clear(struct hci_dev *hdev); 1584 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1585 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1586 bdaddr_t *bdaddr, u8 *val, u8 type, 1587 u8 pin_len, bool *persistent); 1588 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1589 u8 addr_type, u8 type, u8 authenticated, 1590 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1591 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1592 u8 addr_type, u8 role); 1593 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1594 void hci_smp_ltks_clear(struct hci_dev *hdev); 1595 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1596 1597 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1598 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1599 u8 addr_type); 1600 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1601 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1602 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1603 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]); 1604 void hci_blocked_keys_clear(struct hci_dev *hdev); 1605 void hci_smp_irks_clear(struct hci_dev *hdev); 1606 1607 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1608 1609 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1610 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1611 bdaddr_t *bdaddr, u8 bdaddr_type); 1612 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1613 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1614 u8 *hash256, u8 *rand256); 1615 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1616 u8 bdaddr_type); 1617 1618 void hci_adv_instances_clear(struct hci_dev *hdev); 1619 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1620 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1621 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, 1622 u32 flags, u16 adv_data_len, u8 *adv_data, 1623 u16 scan_rsp_len, u8 *scan_rsp_data, 1624 u16 timeout, u16 duration, s8 tx_power, 1625 u32 min_interval, u32 max_interval, 1626 u8 mesh_handle); 1627 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, 1628 u32 flags, u8 data_len, u8 *data, 1629 u32 min_interval, u32 max_interval); 1630 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, 1631 u16 adv_data_len, u8 *adv_data, 1632 u16 scan_rsp_len, u8 *scan_rsp_data); 1633 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1634 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1635 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance); 1636 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); 1637 1638 void hci_adv_monitors_clear(struct hci_dev *hdev); 1639 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1640 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1641 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); 1642 int hci_remove_all_adv_monitor(struct hci_dev *hdev); 1643 bool hci_is_adv_monitoring(struct hci_dev *hdev); 1644 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); 1645 1646 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1647 1648 void hci_init_sysfs(struct hci_dev *hdev); 1649 void hci_conn_init_sysfs(struct hci_conn *conn); 1650 void hci_conn_add_sysfs(struct hci_conn *conn); 1651 void hci_conn_del_sysfs(struct hci_conn *conn); 1652 1653 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1654 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent) 1655 1656 /* ----- LMP capabilities ----- */ 1657 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1658 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1659 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1660 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1661 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1662 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1663 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1664 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1665 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1666 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1667 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1668 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M) 1669 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1670 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1671 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1672 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1673 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1674 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1675 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1676 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1677 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1678 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1679 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1680 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1681 1682 /* ----- Extended LMP capabilities ----- */ 1683 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL) 1684 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL) 1685 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1686 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1687 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1688 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1689 1690 /* ----- Host capabilities ----- */ 1691 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1692 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1693 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1694 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1695 1696 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1697 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1698 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1699 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1700 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ 1701 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) 1702 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ 1703 !adv->rpa_expired) 1704 1705 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1706 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1707 1708 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M)) 1709 1710 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1711 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1712 1713 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED)) 1714 1715 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1716 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1717 1718 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY) 1719 1720 /* Use LL Privacy based address resolution if supported */ 1721 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \ 1722 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY)) 1723 1724 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \ 1725 (hdev->commands[39] & 0x04)) 1726 1727 /* Use enhanced synchronous connection if command is supported and its quirk 1728 * has not been set. 1729 */ 1730 #define enhanced_sync_conn_capable(dev) \ 1731 (((dev)->commands[29] & 0x08) && \ 1732 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks)) 1733 1734 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1735 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1736 ((dev)->commands[37] & 0x40) && \ 1737 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks)) 1738 1739 /* Use ext create connection if command is supported */ 1740 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1741 1742 /* Extended advertising support */ 1743 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1744 1745 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789: 1746 * 1747 * C24: Mandatory if the LE Controller supports Connection State and either 1748 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported 1749 */ 1750 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \ 1751 ext_adv_capable(dev)) 1752 1753 /* Periodic advertising support */ 1754 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV)) 1755 1756 /* CIS Master/Slave and BIS support */ 1757 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev)) 1758 #define cis_capable(dev) \ 1759 (cis_central_capable(dev) || cis_peripheral_capable(dev)) 1760 #define cis_central_capable(dev) \ 1761 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL) 1762 #define cis_peripheral_capable(dev) \ 1763 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) 1764 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) 1765 1766 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \ 1767 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks))) 1768 1769 /* ----- HCI protocols ----- */ 1770 #define HCI_PROTO_DEFER 0x01 1771 1772 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1773 __u8 type, __u8 *flags) 1774 { 1775 switch (type) { 1776 case ACL_LINK: 1777 return l2cap_connect_ind(hdev, bdaddr); 1778 1779 case SCO_LINK: 1780 case ESCO_LINK: 1781 return sco_connect_ind(hdev, bdaddr, flags); 1782 1783 case ISO_LINK: 1784 return iso_connect_ind(hdev, bdaddr, flags); 1785 1786 default: 1787 BT_ERR("unknown link type %d", type); 1788 return -EINVAL; 1789 } 1790 } 1791 1792 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1793 { 1794 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1795 return HCI_ERROR_REMOTE_USER_TERM; 1796 1797 return l2cap_disconn_ind(conn); 1798 } 1799 1800 /* ----- HCI callbacks ----- */ 1801 struct hci_cb { 1802 struct list_head list; 1803 1804 char *name; 1805 1806 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1807 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1808 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1809 __u8 encrypt); 1810 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1811 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1812 }; 1813 1814 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1815 { 1816 struct hci_cb *cb; 1817 1818 mutex_lock(&hci_cb_list_lock); 1819 list_for_each_entry(cb, &hci_cb_list, list) { 1820 if (cb->connect_cfm) 1821 cb->connect_cfm(conn, status); 1822 } 1823 mutex_unlock(&hci_cb_list_lock); 1824 1825 if (conn->connect_cfm_cb) 1826 conn->connect_cfm_cb(conn, status); 1827 } 1828 1829 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1830 { 1831 struct hci_cb *cb; 1832 1833 mutex_lock(&hci_cb_list_lock); 1834 list_for_each_entry(cb, &hci_cb_list, list) { 1835 if (cb->disconn_cfm) 1836 cb->disconn_cfm(conn, reason); 1837 } 1838 mutex_unlock(&hci_cb_list_lock); 1839 1840 if (conn->disconn_cfm_cb) 1841 conn->disconn_cfm_cb(conn, reason); 1842 } 1843 1844 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1845 { 1846 struct hci_cb *cb; 1847 __u8 encrypt; 1848 1849 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1850 return; 1851 1852 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1853 1854 mutex_lock(&hci_cb_list_lock); 1855 list_for_each_entry(cb, &hci_cb_list, list) { 1856 if (cb->security_cfm) 1857 cb->security_cfm(conn, status, encrypt); 1858 } 1859 mutex_unlock(&hci_cb_list_lock); 1860 1861 if (conn->security_cfm_cb) 1862 conn->security_cfm_cb(conn, status); 1863 } 1864 1865 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status) 1866 { 1867 struct hci_cb *cb; 1868 __u8 encrypt; 1869 1870 if (conn->state == BT_CONFIG) { 1871 if (!status) 1872 conn->state = BT_CONNECTED; 1873 1874 hci_connect_cfm(conn, status); 1875 hci_conn_drop(conn); 1876 return; 1877 } 1878 1879 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) 1880 encrypt = 0x00; 1881 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) 1882 encrypt = 0x02; 1883 else 1884 encrypt = 0x01; 1885 1886 if (!status) { 1887 if (conn->sec_level == BT_SECURITY_SDP) 1888 conn->sec_level = BT_SECURITY_LOW; 1889 1890 if (conn->pending_sec_level > conn->sec_level) 1891 conn->sec_level = conn->pending_sec_level; 1892 } 1893 1894 mutex_lock(&hci_cb_list_lock); 1895 list_for_each_entry(cb, &hci_cb_list, list) { 1896 if (cb->security_cfm) 1897 cb->security_cfm(conn, status, encrypt); 1898 } 1899 mutex_unlock(&hci_cb_list_lock); 1900 1901 if (conn->security_cfm_cb) 1902 conn->security_cfm_cb(conn, status); 1903 } 1904 1905 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1906 { 1907 struct hci_cb *cb; 1908 1909 mutex_lock(&hci_cb_list_lock); 1910 list_for_each_entry(cb, &hci_cb_list, list) { 1911 if (cb->key_change_cfm) 1912 cb->key_change_cfm(conn, status); 1913 } 1914 mutex_unlock(&hci_cb_list_lock); 1915 } 1916 1917 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1918 __u8 role) 1919 { 1920 struct hci_cb *cb; 1921 1922 mutex_lock(&hci_cb_list_lock); 1923 list_for_each_entry(cb, &hci_cb_list, list) { 1924 if (cb->role_switch_cfm) 1925 cb->role_switch_cfm(conn, status, role); 1926 } 1927 mutex_unlock(&hci_cb_list_lock); 1928 } 1929 1930 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1931 { 1932 if (addr_type != ADDR_LE_DEV_RANDOM) 1933 return false; 1934 1935 if ((bdaddr->b[5] & 0xc0) == 0x40) 1936 return true; 1937 1938 return false; 1939 } 1940 1941 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1942 { 1943 if (addr_type == ADDR_LE_DEV_PUBLIC) 1944 return true; 1945 1946 /* Check for Random Static address type */ 1947 if ((addr->b[5] & 0xc0) == 0xc0) 1948 return true; 1949 1950 return false; 1951 } 1952 1953 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1954 bdaddr_t *bdaddr, u8 addr_type) 1955 { 1956 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1957 return NULL; 1958 1959 return hci_find_irk_by_rpa(hdev, bdaddr); 1960 } 1961 1962 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1963 u16 to_multiplier) 1964 { 1965 u16 max_latency; 1966 1967 if (min > max || min < 6 || max > 3200) 1968 return -EINVAL; 1969 1970 if (to_multiplier < 10 || to_multiplier > 3200) 1971 return -EINVAL; 1972 1973 if (max >= to_multiplier * 8) 1974 return -EINVAL; 1975 1976 max_latency = (to_multiplier * 4 / max) - 1; 1977 if (latency > 499 || latency > max_latency) 1978 return -EINVAL; 1979 1980 return 0; 1981 } 1982 1983 int hci_register_cb(struct hci_cb *hcb); 1984 int hci_unregister_cb(struct hci_cb *hcb); 1985 1986 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 1987 const void *param); 1988 1989 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1990 const void *param); 1991 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1992 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1993 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); 1994 1995 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1996 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); 1997 1998 u32 hci_conn_get_phy(struct hci_conn *conn); 1999 2000 /* ----- HCI Sockets ----- */ 2001 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 2002 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 2003 int flag, struct sock *skip_sk); 2004 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 2005 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 2006 void *data, u16 data_len, ktime_t tstamp, 2007 int flag, struct sock *skip_sk); 2008 2009 void hci_sock_dev_event(struct hci_dev *hdev, int event); 2010 2011 #define HCI_MGMT_VAR_LEN BIT(0) 2012 #define HCI_MGMT_NO_HDEV BIT(1) 2013 #define HCI_MGMT_UNTRUSTED BIT(2) 2014 #define HCI_MGMT_UNCONFIGURED BIT(3) 2015 #define HCI_MGMT_HDEV_OPTIONAL BIT(4) 2016 2017 struct hci_mgmt_handler { 2018 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 2019 u16 data_len); 2020 size_t data_len; 2021 unsigned long flags; 2022 }; 2023 2024 struct hci_mgmt_chan { 2025 struct list_head list; 2026 unsigned short channel; 2027 size_t handler_count; 2028 const struct hci_mgmt_handler *handlers; 2029 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 2030 }; 2031 2032 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 2033 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 2034 2035 /* Management interface */ 2036 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 2037 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 2038 BIT(BDADDR_LE_RANDOM)) 2039 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 2040 BIT(BDADDR_LE_PUBLIC) | \ 2041 BIT(BDADDR_LE_RANDOM)) 2042 2043 /* These LE scan and inquiry parameters were chosen according to LE General 2044 * Discovery Procedure specification. 2045 */ 2046 #define DISCOV_LE_SCAN_WIN 0x12 2047 #define DISCOV_LE_SCAN_INT 0x12 2048 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 2049 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 2050 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 2051 #define DISCOV_BREDR_INQUIRY_LEN 0x08 2052 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 2053 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ 2054 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ 2055 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */ 2056 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */ 2057 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */ 2058 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */ 2059 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10) 2060 2061 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */ 2062 2063 void mgmt_fill_version_info(void *ver); 2064 int mgmt_new_settings(struct hci_dev *hdev); 2065 void mgmt_index_added(struct hci_dev *hdev); 2066 void mgmt_index_removed(struct hci_dev *hdev); 2067 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 2068 void mgmt_power_on(struct hci_dev *hdev, int err); 2069 void __mgmt_power_off(struct hci_dev *hdev); 2070 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 2071 bool persistent); 2072 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 2073 u8 *name, u8 name_len); 2074 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 2075 u8 link_type, u8 addr_type, u8 reason, 2076 bool mgmt_connected); 2077 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 2078 u8 link_type, u8 addr_type, u8 status); 2079 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2080 u8 addr_type, u8 status); 2081 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 2082 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2083 u8 status); 2084 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2085 u8 status); 2086 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2087 u8 link_type, u8 addr_type, u32 value, 2088 u8 confirm_hint); 2089 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2090 u8 link_type, u8 addr_type, u8 status); 2091 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2092 u8 link_type, u8 addr_type, u8 status); 2093 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2094 u8 link_type, u8 addr_type); 2095 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2096 u8 link_type, u8 addr_type, u8 status); 2097 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2098 u8 link_type, u8 addr_type, u8 status); 2099 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 2100 u8 link_type, u8 addr_type, u32 passkey, 2101 u8 entered); 2102 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 2103 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 2104 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 2105 u8 status); 2106 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 2107 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 2108 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 2109 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2110 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 2111 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len, 2112 u64 instant); 2113 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2114 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 2115 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 2116 void mgmt_suspending(struct hci_dev *hdev, u8 state); 2117 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr, 2118 u8 addr_type); 2119 bool mgmt_powering_down(struct hci_dev *hdev); 2120 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 2121 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 2122 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 2123 bool persistent); 2124 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 2125 u8 bdaddr_type, u8 store_hint, u16 min_interval, 2126 u16 max_interval, u16 latency, u16 timeout); 2127 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 2128 bool mgmt_get_connectable(struct hci_dev *hdev); 2129 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 2130 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 2131 u8 instance); 2132 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 2133 u8 instance); 2134 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); 2135 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 2136 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, 2137 bdaddr_t *bdaddr, u8 addr_type); 2138 2139 int hci_abort_conn(struct hci_conn *conn, u8 reason); 2140 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 2141 u16 to_multiplier); 2142 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 2143 __u8 ltk[16], __u8 key_size); 2144 2145 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 2146 u8 *bdaddr_type); 2147 2148 #define SCO_AIRMODE_MASK 0x0003 2149 #define SCO_AIRMODE_CVSD 0x0000 2150 #define SCO_AIRMODE_TRANSP 0x0003 2151 2152 #define LOCAL_CODEC_ACL_MASK BIT(0) 2153 #define LOCAL_CODEC_SCO_MASK BIT(1) 2154 2155 #define TRANSPORT_TYPE_MAX 0x04 2156 2157 #endif /* __HCI_CORE_H */ 2158