1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 Copyright 2023 NXP 5 6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License version 2 as 10 published by the Free Software Foundation; 11 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 23 SOFTWARE IS DISCLAIMED. 24 */ 25 26 #ifndef __HCI_CORE_H 27 #define __HCI_CORE_H 28 29 #include <linux/idr.h> 30 #include <linux/leds.h> 31 #include <linux/rculist.h> 32 33 #include <net/bluetooth/hci.h> 34 #include <net/bluetooth/hci_sync.h> 35 #include <net/bluetooth/hci_sock.h> 36 #include <net/bluetooth/coredump.h> 37 38 /* HCI priority */ 39 #define HCI_PRIO_MAX 7 40 41 /* HCI maximum id value */ 42 #define HCI_MAX_ID 10000 43 44 /* HCI Core structures */ 45 struct inquiry_data { 46 bdaddr_t bdaddr; 47 __u8 pscan_rep_mode; 48 __u8 pscan_period_mode; 49 __u8 pscan_mode; 50 __u8 dev_class[3]; 51 __le16 clock_offset; 52 __s8 rssi; 53 __u8 ssp_mode; 54 }; 55 56 struct inquiry_entry { 57 struct list_head all; /* inq_cache.all */ 58 struct list_head list; /* unknown or resolve */ 59 enum { 60 NAME_NOT_KNOWN, 61 NAME_NEEDED, 62 NAME_PENDING, 63 NAME_KNOWN, 64 } name_state; 65 __u32 timestamp; 66 struct inquiry_data data; 67 }; 68 69 struct discovery_state { 70 int type; 71 enum { 72 DISCOVERY_STOPPED, 73 DISCOVERY_STARTING, 74 DISCOVERY_FINDING, 75 DISCOVERY_RESOLVING, 76 DISCOVERY_STOPPING, 77 } state; 78 struct list_head all; /* All devices found during inquiry */ 79 struct list_head unknown; /* Name state not known */ 80 struct list_head resolve; /* Name needs to be resolved */ 81 __u32 timestamp; 82 bdaddr_t last_adv_addr; 83 u8 last_adv_addr_type; 84 s8 last_adv_rssi; 85 u32 last_adv_flags; 86 u8 last_adv_data[HCI_MAX_EXT_AD_LENGTH]; 87 u8 last_adv_data_len; 88 bool report_invalid_rssi; 89 bool result_filtering; 90 bool limited; 91 s8 rssi; 92 u16 uuid_count; 93 u8 (*uuids)[16]; 94 unsigned long scan_start; 95 unsigned long scan_duration; 96 unsigned long name_resolve_timeout; 97 }; 98 99 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */ 100 101 enum suspend_tasks { 102 SUSPEND_PAUSE_DISCOVERY, 103 SUSPEND_UNPAUSE_DISCOVERY, 104 105 SUSPEND_PAUSE_ADVERTISING, 106 SUSPEND_UNPAUSE_ADVERTISING, 107 108 SUSPEND_SCAN_DISABLE, 109 SUSPEND_SCAN_ENABLE, 110 SUSPEND_DISCONNECTING, 111 112 SUSPEND_POWERING_DOWN, 113 114 SUSPEND_PREPARE_NOTIFIER, 115 116 SUSPEND_SET_ADV_FILTER, 117 __SUSPEND_NUM_TASKS 118 }; 119 120 enum suspended_state { 121 BT_RUNNING = 0, 122 BT_SUSPEND_DISCONNECT, 123 BT_SUSPEND_CONFIGURE_WAKE, 124 }; 125 126 struct hci_conn_hash { 127 struct list_head list; 128 unsigned int acl_num; 129 unsigned int 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 link_type; 193 u8 type; 194 u8 val[16]; 195 }; 196 197 struct smp_ltk { 198 struct list_head list; 199 struct rcu_head rcu; 200 bdaddr_t bdaddr; 201 u8 bdaddr_type; 202 u8 link_type; 203 u8 authenticated; 204 u8 type; 205 u8 enc_size; 206 __le16 ediv; 207 __le64 rand; 208 u8 val[16]; 209 }; 210 211 struct smp_irk { 212 struct list_head list; 213 struct rcu_head rcu; 214 bdaddr_t rpa; 215 bdaddr_t bdaddr; 216 u8 addr_type; 217 u8 link_type; 218 u8 val[16]; 219 }; 220 221 struct link_key { 222 struct list_head list; 223 struct rcu_head rcu; 224 bdaddr_t bdaddr; 225 u8 bdaddr_type; 226 u8 link_type; 227 u8 type; 228 u8 val[HCI_LINK_KEY_SIZE]; 229 u8 pin_len; 230 }; 231 232 struct oob_data { 233 struct list_head list; 234 bdaddr_t bdaddr; 235 u8 bdaddr_type; 236 u8 present; 237 u8 hash192[16]; 238 u8 rand192[16]; 239 u8 hash256[16]; 240 u8 rand256[16]; 241 }; 242 243 struct adv_info { 244 struct list_head list; 245 bool enabled; 246 bool pending; 247 bool periodic; 248 __u8 mesh; 249 __u8 instance; 250 __u32 flags; 251 __u16 timeout; 252 __u16 remaining_time; 253 __u16 duration; 254 __u16 adv_data_len; 255 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 256 bool adv_data_changed; 257 __u16 scan_rsp_len; 258 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 259 bool scan_rsp_changed; 260 __u16 per_adv_data_len; 261 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 262 __s8 tx_power; 263 __u32 min_interval; 264 __u32 max_interval; 265 bdaddr_t random_addr; 266 bool rpa_expired; 267 struct delayed_work rpa_expired_cb; 268 }; 269 270 #define HCI_MAX_ADV_INSTANCES 5 271 #define HCI_DEFAULT_ADV_DURATION 2 272 273 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F 274 275 #define DATA_CMP(_d1, _l1, _d2, _l2) \ 276 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2) 277 278 #define ADV_DATA_CMP(_adv, _data, _len) \ 279 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len) 280 281 #define SCAN_RSP_CMP(_adv, _data, _len) \ 282 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len) 283 284 struct monitored_device { 285 struct list_head list; 286 287 bdaddr_t bdaddr; 288 __u8 addr_type; 289 __u16 handle; 290 bool notified; 291 }; 292 293 struct adv_pattern { 294 struct list_head list; 295 __u8 ad_type; 296 __u8 offset; 297 __u8 length; 298 __u8 value[HCI_MAX_EXT_AD_LENGTH]; 299 }; 300 301 struct adv_rssi_thresholds { 302 __s8 low_threshold; 303 __s8 high_threshold; 304 __u16 low_threshold_timeout; 305 __u16 high_threshold_timeout; 306 __u8 sampling_period; 307 }; 308 309 struct adv_monitor { 310 struct list_head patterns; 311 struct adv_rssi_thresholds rssi; 312 __u16 handle; 313 314 enum { 315 ADV_MONITOR_STATE_NOT_REGISTERED, 316 ADV_MONITOR_STATE_REGISTERED, 317 ADV_MONITOR_STATE_OFFLOADED 318 } state; 319 }; 320 321 #define HCI_MIN_ADV_MONITOR_HANDLE 1 322 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32 323 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16 324 #define HCI_ADV_MONITOR_EXT_NONE 1 325 #define HCI_ADV_MONITOR_EXT_MSFT 2 326 327 #define HCI_MAX_SHORT_NAME_LENGTH 10 328 329 #define HCI_CONN_HANDLE_MAX 0x0eff 330 #define HCI_CONN_HANDLE_UNSET(_handle) (_handle > HCI_CONN_HANDLE_MAX) 331 332 /* Min encryption key size to match with SMP */ 333 #define HCI_MIN_ENC_KEY_SIZE 7 334 335 /* Default LE RPA expiry time, 15 minutes */ 336 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 337 338 /* Default min/max age of connection information (1s/3s) */ 339 #define DEFAULT_CONN_INFO_MIN_AGE 1000 340 #define DEFAULT_CONN_INFO_MAX_AGE 3000 341 /* Default authenticated payload timeout 30s */ 342 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8 343 344 struct amp_assoc { 345 __u16 len; 346 __u16 offset; 347 __u16 rem_len; 348 __u16 len_so_far; 349 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 350 }; 351 352 #define HCI_MAX_PAGES 3 353 354 struct hci_dev { 355 struct list_head list; 356 struct mutex lock; 357 358 struct ida unset_handle_ida; 359 360 const char *name; 361 unsigned long flags; 362 __u16 id; 363 __u8 bus; 364 __u8 dev_type; 365 bdaddr_t bdaddr; 366 bdaddr_t setup_addr; 367 bdaddr_t public_addr; 368 bdaddr_t random_addr; 369 bdaddr_t static_addr; 370 __u8 adv_addr_type; 371 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 372 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 373 __u8 eir[HCI_MAX_EIR_LENGTH]; 374 __u16 appearance; 375 __u8 dev_class[3]; 376 __u8 major_class; 377 __u8 minor_class; 378 __u8 max_page; 379 __u8 features[HCI_MAX_PAGES][8]; 380 __u8 le_features[8]; 381 __u8 le_accept_list_size; 382 __u8 le_resolv_list_size; 383 __u8 le_num_of_adv_sets; 384 __u8 le_states[8]; 385 __u8 mesh_ad_types[16]; 386 __u8 mesh_send_ref; 387 __u8 commands[64]; 388 __u8 hci_ver; 389 __u16 hci_rev; 390 __u8 lmp_ver; 391 __u16 manufacturer; 392 __u16 lmp_subver; 393 __u16 voice_setting; 394 __u8 num_iac; 395 __u16 stored_max_keys; 396 __u16 stored_num_keys; 397 __u8 io_capability; 398 __s8 inq_tx_power; 399 __u8 err_data_reporting; 400 __u16 page_scan_interval; 401 __u16 page_scan_window; 402 __u8 page_scan_type; 403 __u8 le_adv_channel_map; 404 __u16 le_adv_min_interval; 405 __u16 le_adv_max_interval; 406 __u8 le_scan_type; 407 __u16 le_scan_interval; 408 __u16 le_scan_window; 409 __u16 le_scan_int_suspend; 410 __u16 le_scan_window_suspend; 411 __u16 le_scan_int_discovery; 412 __u16 le_scan_window_discovery; 413 __u16 le_scan_int_adv_monitor; 414 __u16 le_scan_window_adv_monitor; 415 __u16 le_scan_int_connect; 416 __u16 le_scan_window_connect; 417 __u16 le_conn_min_interval; 418 __u16 le_conn_max_interval; 419 __u16 le_conn_latency; 420 __u16 le_supv_timeout; 421 __u16 le_def_tx_len; 422 __u16 le_def_tx_time; 423 __u16 le_max_tx_len; 424 __u16 le_max_tx_time; 425 __u16 le_max_rx_len; 426 __u16 le_max_rx_time; 427 __u8 le_max_key_size; 428 __u8 le_min_key_size; 429 __u16 discov_interleaved_timeout; 430 __u16 conn_info_min_age; 431 __u16 conn_info_max_age; 432 __u16 auth_payload_timeout; 433 __u8 min_enc_key_size; 434 __u8 max_enc_key_size; 435 __u8 pairing_opts; 436 __u8 ssp_debug_mode; 437 __u8 hw_error_code; 438 __u32 clock; 439 __u16 advmon_allowlist_duration; 440 __u16 advmon_no_filter_duration; 441 __u8 enable_advmon_interleave_scan; 442 443 __u16 devid_source; 444 __u16 devid_vendor; 445 __u16 devid_product; 446 __u16 devid_version; 447 448 __u8 def_page_scan_type; 449 __u16 def_page_scan_int; 450 __u16 def_page_scan_window; 451 __u8 def_inq_scan_type; 452 __u16 def_inq_scan_int; 453 __u16 def_inq_scan_window; 454 __u16 def_br_lsto; 455 __u16 def_page_timeout; 456 __u16 def_multi_adv_rotation_duration; 457 __u16 def_le_autoconnect_timeout; 458 __s8 min_le_tx_power; 459 __s8 max_le_tx_power; 460 461 __u16 pkt_type; 462 __u16 esco_type; 463 __u16 link_policy; 464 __u16 link_mode; 465 466 __u32 idle_timeout; 467 __u16 sniff_min_interval; 468 __u16 sniff_max_interval; 469 470 __u8 amp_status; 471 __u32 amp_total_bw; 472 __u32 amp_max_bw; 473 __u32 amp_min_latency; 474 __u32 amp_max_pdu; 475 __u8 amp_type; 476 __u16 amp_pal_cap; 477 __u16 amp_assoc_size; 478 __u32 amp_max_flush_to; 479 __u32 amp_be_flush_to; 480 481 struct amp_assoc loc_assoc; 482 483 __u8 flow_ctl_mode; 484 485 unsigned int auto_accept_delay; 486 487 unsigned long quirks; 488 489 atomic_t cmd_cnt; 490 unsigned int acl_cnt; 491 unsigned int sco_cnt; 492 unsigned int le_cnt; 493 unsigned int iso_cnt; 494 495 unsigned int acl_mtu; 496 unsigned int sco_mtu; 497 unsigned int le_mtu; 498 unsigned int iso_mtu; 499 unsigned int acl_pkts; 500 unsigned int sco_pkts; 501 unsigned int le_pkts; 502 unsigned int iso_pkts; 503 504 __u16 block_len; 505 __u16 block_mtu; 506 __u16 num_blocks; 507 __u16 block_cnt; 508 509 unsigned long acl_last_tx; 510 unsigned long sco_last_tx; 511 unsigned long le_last_tx; 512 513 __u8 le_tx_def_phys; 514 __u8 le_rx_def_phys; 515 516 struct workqueue_struct *workqueue; 517 struct workqueue_struct *req_workqueue; 518 519 struct work_struct power_on; 520 struct delayed_work power_off; 521 struct work_struct error_reset; 522 struct work_struct cmd_sync_work; 523 struct list_head cmd_sync_work_list; 524 struct mutex cmd_sync_work_lock; 525 struct mutex unregister_lock; 526 struct work_struct cmd_sync_cancel_work; 527 struct work_struct reenable_adv_work; 528 529 __u16 discov_timeout; 530 struct delayed_work discov_off; 531 532 struct delayed_work service_cache; 533 534 struct delayed_work cmd_timer; 535 struct delayed_work ncmd_timer; 536 537 struct work_struct rx_work; 538 struct work_struct cmd_work; 539 struct work_struct tx_work; 540 541 struct delayed_work le_scan_disable; 542 struct delayed_work le_scan_restart; 543 544 struct sk_buff_head rx_q; 545 struct sk_buff_head raw_q; 546 struct sk_buff_head cmd_q; 547 548 struct sk_buff *sent_cmd; 549 struct sk_buff *recv_event; 550 551 struct mutex req_lock; 552 wait_queue_head_t req_wait_q; 553 __u32 req_status; 554 __u32 req_result; 555 struct sk_buff *req_skb; 556 struct sk_buff *req_rsp; 557 558 void *smp_data; 559 void *smp_bredr_data; 560 561 struct discovery_state discovery; 562 563 int discovery_old_state; 564 bool discovery_paused; 565 int advertising_old_state; 566 bool advertising_paused; 567 568 struct notifier_block suspend_notifier; 569 enum suspended_state suspend_state_next; 570 enum suspended_state suspend_state; 571 bool scanning_paused; 572 bool suspended; 573 u8 wake_reason; 574 bdaddr_t wake_addr; 575 u8 wake_addr_type; 576 577 struct hci_conn_hash conn_hash; 578 579 struct list_head mesh_pending; 580 struct list_head mgmt_pending; 581 struct list_head reject_list; 582 struct list_head accept_list; 583 struct list_head uuids; 584 struct list_head link_keys; 585 struct list_head long_term_keys; 586 struct list_head identity_resolving_keys; 587 struct list_head remote_oob_data; 588 struct list_head le_accept_list; 589 struct list_head le_resolv_list; 590 struct list_head le_conn_params; 591 struct list_head pend_le_conns; 592 struct list_head pend_le_reports; 593 struct list_head blocked_keys; 594 struct list_head local_codecs; 595 596 struct hci_dev_stats stat; 597 598 atomic_t promisc; 599 600 const char *hw_info; 601 const char *fw_info; 602 struct dentry *debugfs; 603 604 struct hci_devcoredump dump; 605 606 struct device dev; 607 608 struct rfkill *rfkill; 609 610 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 611 hci_conn_flags_t conn_flags; 612 613 __s8 adv_tx_power; 614 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 615 __u8 adv_data_len; 616 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 617 __u8 scan_rsp_data_len; 618 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 619 __u8 per_adv_data_len; 620 621 struct list_head adv_instances; 622 unsigned int adv_instance_cnt; 623 __u8 cur_adv_instance; 624 __u16 adv_instance_timeout; 625 struct delayed_work adv_instance_expire; 626 627 struct idr adv_monitors_idr; 628 unsigned int adv_monitors_cnt; 629 630 __u8 irk[16]; 631 __u32 rpa_timeout; 632 struct delayed_work rpa_expired; 633 bdaddr_t rpa; 634 635 struct delayed_work mesh_send_done; 636 637 enum { 638 INTERLEAVE_SCAN_NONE, 639 INTERLEAVE_SCAN_NO_FILTER, 640 INTERLEAVE_SCAN_ALLOWLIST 641 } interleave_scan_state; 642 643 struct delayed_work interleave_scan; 644 645 struct list_head monitored_devices; 646 bool advmon_pend_notify; 647 648 #if IS_ENABLED(CONFIG_BT_LEDS) 649 struct led_trigger *power_led; 650 #endif 651 652 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 653 __u16 msft_opcode; 654 void *msft_data; 655 bool msft_curve_validity; 656 #endif 657 658 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 659 bool aosp_capable; 660 bool aosp_quality_report; 661 #endif 662 663 int (*open)(struct hci_dev *hdev); 664 int (*close)(struct hci_dev *hdev); 665 int (*flush)(struct hci_dev *hdev); 666 int (*setup)(struct hci_dev *hdev); 667 int (*shutdown)(struct hci_dev *hdev); 668 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 669 void (*notify)(struct hci_dev *hdev, unsigned int evt); 670 void (*hw_error)(struct hci_dev *hdev, u8 code); 671 int (*post_init)(struct hci_dev *hdev); 672 int (*set_diag)(struct hci_dev *hdev, bool enable); 673 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 674 void (*cmd_timeout)(struct hci_dev *hdev); 675 void (*reset)(struct hci_dev *hdev); 676 bool (*wakeup)(struct hci_dev *hdev); 677 int (*set_quality_report)(struct hci_dev *hdev, bool enable); 678 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path); 679 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type, 680 struct bt_codec *codec, __u8 *vnd_len, 681 __u8 **vnd_data); 682 }; 683 684 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 685 686 enum conn_reasons { 687 CONN_REASON_PAIR_DEVICE, 688 CONN_REASON_L2CAP_CHAN, 689 CONN_REASON_SCO_CONNECT, 690 CONN_REASON_ISO_CONNECT, 691 }; 692 693 struct hci_conn { 694 struct list_head list; 695 696 atomic_t refcnt; 697 698 bdaddr_t dst; 699 __u8 dst_type; 700 bdaddr_t src; 701 __u8 src_type; 702 bdaddr_t init_addr; 703 __u8 init_addr_type; 704 bdaddr_t resp_addr; 705 __u8 resp_addr_type; 706 __u8 adv_instance; 707 __u16 handle; 708 __u16 sync_handle; 709 __u16 state; 710 __u8 mode; 711 __u8 type; 712 __u8 role; 713 bool out; 714 __u8 attempt; 715 __u8 dev_class[3]; 716 __u8 features[HCI_MAX_PAGES][8]; 717 __u16 pkt_type; 718 __u16 link_policy; 719 __u8 key_type; 720 __u8 auth_type; 721 __u8 sec_level; 722 __u8 pending_sec_level; 723 __u8 pin_length; 724 __u8 enc_key_size; 725 __u8 io_capability; 726 __u32 passkey_notify; 727 __u8 passkey_entered; 728 __u16 disc_timeout; 729 __u16 conn_timeout; 730 __u16 setting; 731 __u16 auth_payload_timeout; 732 __u16 le_conn_min_interval; 733 __u16 le_conn_max_interval; 734 __u16 le_conn_interval; 735 __u16 le_conn_latency; 736 __u16 le_supv_timeout; 737 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH]; 738 __u8 le_adv_data_len; 739 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH]; 740 __u8 le_per_adv_data_len; 741 __u8 le_tx_phy; 742 __u8 le_rx_phy; 743 __s8 rssi; 744 __s8 tx_power; 745 __s8 max_tx_power; 746 struct bt_iso_qos iso_qos; 747 unsigned long flags; 748 749 enum conn_reasons conn_reason; 750 __u8 abort_reason; 751 752 __u32 clock; 753 __u16 clock_accuracy; 754 755 unsigned long conn_info_timestamp; 756 757 __u8 remote_cap; 758 __u8 remote_auth; 759 __u8 remote_id; 760 761 unsigned int sent; 762 763 struct sk_buff_head data_q; 764 struct list_head chan_list; 765 766 struct delayed_work disc_work; 767 struct delayed_work auto_accept_work; 768 struct delayed_work idle_work; 769 struct delayed_work le_conn_timeout; 770 771 struct device dev; 772 struct dentry *debugfs; 773 774 struct hci_dev *hdev; 775 void *l2cap_data; 776 void *sco_data; 777 void *iso_data; 778 struct amp_mgr *amp_mgr; 779 780 struct list_head link_list; 781 struct hci_conn *parent; 782 struct hci_link *link; 783 784 struct bt_codec codec; 785 786 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 787 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 788 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 789 790 void (*cleanup)(struct hci_conn *conn); 791 }; 792 793 struct hci_link { 794 struct list_head list; 795 struct hci_conn *conn; 796 }; 797 798 struct hci_chan { 799 struct list_head list; 800 __u16 handle; 801 struct hci_conn *conn; 802 struct sk_buff_head data_q; 803 unsigned int sent; 804 __u8 state; 805 bool amp; 806 }; 807 808 struct hci_conn_params { 809 struct list_head list; 810 struct list_head action; 811 812 bdaddr_t addr; 813 u8 addr_type; 814 815 u16 conn_min_interval; 816 u16 conn_max_interval; 817 u16 conn_latency; 818 u16 supervision_timeout; 819 820 enum { 821 HCI_AUTO_CONN_DISABLED, 822 HCI_AUTO_CONN_REPORT, 823 HCI_AUTO_CONN_DIRECT, 824 HCI_AUTO_CONN_ALWAYS, 825 HCI_AUTO_CONN_LINK_LOSS, 826 HCI_AUTO_CONN_EXPLICIT, 827 } auto_connect; 828 829 struct hci_conn *conn; 830 bool explicit_connect; 831 /* Accessed without hdev->lock: */ 832 hci_conn_flags_t flags; 833 u8 privacy_mode; 834 }; 835 836 extern struct list_head hci_dev_list; 837 extern struct list_head hci_cb_list; 838 extern rwlock_t hci_dev_list_lock; 839 extern struct mutex hci_cb_list_lock; 840 841 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 842 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 843 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 844 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 845 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 846 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 847 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 848 849 #define hci_dev_clear_volatile_flags(hdev) \ 850 do { \ 851 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 852 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 853 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\ 854 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 855 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \ 856 } while (0) 857 858 #define hci_dev_le_state_simultaneous(hdev) \ 859 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \ 860 (hdev->le_states[4] & 0x08) && /* Central */ \ 861 (hdev->le_states[4] & 0x40) && /* Peripheral */ \ 862 (hdev->le_states[3] & 0x10)) /* Simultaneous */ 863 864 /* ----- HCI interface to upper protocols ----- */ 865 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 866 int l2cap_disconn_ind(struct hci_conn *hcon); 867 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 868 869 #if IS_ENABLED(CONFIG_BT_BREDR) 870 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 871 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 872 #else 873 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 874 __u8 *flags) 875 { 876 return 0; 877 } 878 879 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 880 { 881 } 882 #endif 883 884 #if IS_ENABLED(CONFIG_BT_LE) 885 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 886 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 887 #else 888 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 889 __u8 *flags) 890 { 891 return 0; 892 } 893 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, 894 u16 flags) 895 { 896 } 897 #endif 898 899 /* ----- Inquiry cache ----- */ 900 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 901 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 902 903 static inline void discovery_init(struct hci_dev *hdev) 904 { 905 hdev->discovery.state = DISCOVERY_STOPPED; 906 INIT_LIST_HEAD(&hdev->discovery.all); 907 INIT_LIST_HEAD(&hdev->discovery.unknown); 908 INIT_LIST_HEAD(&hdev->discovery.resolve); 909 hdev->discovery.report_invalid_rssi = true; 910 hdev->discovery.rssi = HCI_RSSI_INVALID; 911 } 912 913 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 914 { 915 hdev->discovery.result_filtering = false; 916 hdev->discovery.report_invalid_rssi = true; 917 hdev->discovery.rssi = HCI_RSSI_INVALID; 918 hdev->discovery.uuid_count = 0; 919 kfree(hdev->discovery.uuids); 920 hdev->discovery.uuids = NULL; 921 hdev->discovery.scan_start = 0; 922 hdev->discovery.scan_duration = 0; 923 } 924 925 bool hci_discovery_active(struct hci_dev *hdev); 926 927 void hci_discovery_set_state(struct hci_dev *hdev, int state); 928 929 static inline int inquiry_cache_empty(struct hci_dev *hdev) 930 { 931 return list_empty(&hdev->discovery.all); 932 } 933 934 static inline long inquiry_cache_age(struct hci_dev *hdev) 935 { 936 struct discovery_state *c = &hdev->discovery; 937 return jiffies - c->timestamp; 938 } 939 940 static inline long inquiry_entry_age(struct inquiry_entry *e) 941 { 942 return jiffies - e->timestamp; 943 } 944 945 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 946 bdaddr_t *bdaddr); 947 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 948 bdaddr_t *bdaddr); 949 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 950 bdaddr_t *bdaddr, 951 int state); 952 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 953 struct inquiry_entry *ie); 954 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 955 bool name_known); 956 void hci_inquiry_cache_flush(struct hci_dev *hdev); 957 958 /* ----- HCI Connections ----- */ 959 enum { 960 HCI_CONN_AUTH_PEND, 961 HCI_CONN_ENCRYPT_PEND, 962 HCI_CONN_RSWITCH_PEND, 963 HCI_CONN_MODE_CHANGE_PEND, 964 HCI_CONN_SCO_SETUP_PEND, 965 HCI_CONN_MGMT_CONNECTED, 966 HCI_CONN_SSP_ENABLED, 967 HCI_CONN_SC_ENABLED, 968 HCI_CONN_AES_CCM, 969 HCI_CONN_POWER_SAVE, 970 HCI_CONN_FLUSH_KEY, 971 HCI_CONN_ENCRYPT, 972 HCI_CONN_AUTH, 973 HCI_CONN_SECURE, 974 HCI_CONN_FIPS, 975 HCI_CONN_STK_ENCRYPT, 976 HCI_CONN_AUTH_INITIATOR, 977 HCI_CONN_DROP, 978 HCI_CONN_CANCEL, 979 HCI_CONN_PARAM_REMOVAL_PEND, 980 HCI_CONN_NEW_LINK_KEY, 981 HCI_CONN_SCANNING, 982 HCI_CONN_AUTH_FAILURE, 983 HCI_CONN_PER_ADV, 984 HCI_CONN_BIG_CREATED, 985 HCI_CONN_CREATE_CIS, 986 HCI_CONN_BIG_SYNC, 987 HCI_CONN_BIG_SYNC_FAILED, 988 HCI_CONN_PA_SYNC, 989 HCI_CONN_PA_SYNC_FAILED, 990 }; 991 992 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 993 { 994 struct hci_dev *hdev = conn->hdev; 995 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 996 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 997 } 998 999 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 1000 { 1001 struct hci_dev *hdev = conn->hdev; 1002 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 1003 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 1004 } 1005 1006 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 1007 { 1008 struct hci_conn_hash *h = &hdev->conn_hash; 1009 list_add_tail_rcu(&c->list, &h->list); 1010 switch (c->type) { 1011 case ACL_LINK: 1012 h->acl_num++; 1013 break; 1014 case AMP_LINK: 1015 h->amp_num++; 1016 break; 1017 case LE_LINK: 1018 h->le_num++; 1019 if (c->role == HCI_ROLE_SLAVE) 1020 h->le_num_peripheral++; 1021 break; 1022 case SCO_LINK: 1023 case ESCO_LINK: 1024 h->sco_num++; 1025 break; 1026 case ISO_LINK: 1027 h->iso_num++; 1028 break; 1029 } 1030 } 1031 1032 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 1033 { 1034 struct hci_conn_hash *h = &hdev->conn_hash; 1035 1036 list_del_rcu(&c->list); 1037 synchronize_rcu(); 1038 1039 switch (c->type) { 1040 case ACL_LINK: 1041 h->acl_num--; 1042 break; 1043 case AMP_LINK: 1044 h->amp_num--; 1045 break; 1046 case LE_LINK: 1047 h->le_num--; 1048 if (c->role == HCI_ROLE_SLAVE) 1049 h->le_num_peripheral--; 1050 break; 1051 case SCO_LINK: 1052 case ESCO_LINK: 1053 h->sco_num--; 1054 break; 1055 case ISO_LINK: 1056 h->iso_num--; 1057 break; 1058 } 1059 } 1060 1061 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 1062 { 1063 struct hci_conn_hash *h = &hdev->conn_hash; 1064 switch (type) { 1065 case ACL_LINK: 1066 return h->acl_num; 1067 case AMP_LINK: 1068 return h->amp_num; 1069 case LE_LINK: 1070 return h->le_num; 1071 case SCO_LINK: 1072 case ESCO_LINK: 1073 return h->sco_num; 1074 case ISO_LINK: 1075 return h->iso_num; 1076 default: 1077 return 0; 1078 } 1079 } 1080 1081 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 1082 { 1083 struct hci_conn_hash *c = &hdev->conn_hash; 1084 1085 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num; 1086 } 1087 1088 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 1089 { 1090 struct hci_conn_hash *h = &hdev->conn_hash; 1091 struct hci_conn *c; 1092 __u8 type = INVALID_LINK; 1093 1094 rcu_read_lock(); 1095 1096 list_for_each_entry_rcu(c, &h->list, list) { 1097 if (c->handle == handle) { 1098 type = c->type; 1099 break; 1100 } 1101 } 1102 1103 rcu_read_unlock(); 1104 1105 return type; 1106 } 1107 1108 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev, 1109 bdaddr_t *ba, __u8 bis) 1110 { 1111 struct hci_conn_hash *h = &hdev->conn_hash; 1112 struct hci_conn *c; 1113 1114 rcu_read_lock(); 1115 1116 list_for_each_entry_rcu(c, &h->list, list) { 1117 if (bacmp(&c->dst, ba) || c->type != ISO_LINK) 1118 continue; 1119 1120 if (c->iso_qos.bcast.bis == bis) { 1121 rcu_read_unlock(); 1122 return c; 1123 } 1124 } 1125 rcu_read_unlock(); 1126 1127 return NULL; 1128 } 1129 1130 static inline struct hci_conn * 1131 hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev, 1132 bdaddr_t *ba, 1133 __u8 big, __u8 bis) 1134 { 1135 struct hci_conn_hash *h = &hdev->conn_hash; 1136 struct hci_conn *c; 1137 1138 rcu_read_lock(); 1139 1140 list_for_each_entry_rcu(c, &h->list, list) { 1141 if (bacmp(&c->dst, ba) || c->type != ISO_LINK || 1142 !test_bit(HCI_CONN_PER_ADV, &c->flags)) 1143 continue; 1144 1145 if (c->iso_qos.bcast.big == big && 1146 c->iso_qos.bcast.bis == bis) { 1147 rcu_read_unlock(); 1148 return c; 1149 } 1150 } 1151 rcu_read_unlock(); 1152 1153 return NULL; 1154 } 1155 1156 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 1157 __u16 handle) 1158 { 1159 struct hci_conn_hash *h = &hdev->conn_hash; 1160 struct hci_conn *c; 1161 1162 rcu_read_lock(); 1163 1164 list_for_each_entry_rcu(c, &h->list, list) { 1165 if (c->handle == handle) { 1166 rcu_read_unlock(); 1167 return c; 1168 } 1169 } 1170 rcu_read_unlock(); 1171 1172 return NULL; 1173 } 1174 1175 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 1176 __u8 type, bdaddr_t *ba) 1177 { 1178 struct hci_conn_hash *h = &hdev->conn_hash; 1179 struct hci_conn *c; 1180 1181 rcu_read_lock(); 1182 1183 list_for_each_entry_rcu(c, &h->list, list) { 1184 if (c->type == type && !bacmp(&c->dst, ba)) { 1185 rcu_read_unlock(); 1186 return c; 1187 } 1188 } 1189 1190 rcu_read_unlock(); 1191 1192 return NULL; 1193 } 1194 1195 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 1196 bdaddr_t *ba, 1197 __u8 ba_type) 1198 { 1199 struct hci_conn_hash *h = &hdev->conn_hash; 1200 struct hci_conn *c; 1201 1202 rcu_read_lock(); 1203 1204 list_for_each_entry_rcu(c, &h->list, list) { 1205 if (c->type != LE_LINK) 1206 continue; 1207 1208 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1209 rcu_read_unlock(); 1210 return c; 1211 } 1212 } 1213 1214 rcu_read_unlock(); 1215 1216 return NULL; 1217 } 1218 1219 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev, 1220 bdaddr_t *ba, 1221 __u8 ba_type, 1222 __u8 cig, 1223 __u8 id) 1224 { 1225 struct hci_conn_hash *h = &hdev->conn_hash; 1226 struct hci_conn *c; 1227 1228 rcu_read_lock(); 1229 1230 list_for_each_entry_rcu(c, &h->list, list) { 1231 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY)) 1232 continue; 1233 1234 /* Match CIG ID if set */ 1235 if (cig != c->iso_qos.ucast.cig) 1236 continue; 1237 1238 /* Match CIS ID if set */ 1239 if (id != c->iso_qos.ucast.cis) 1240 continue; 1241 1242 /* Match destination address if set */ 1243 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) { 1244 rcu_read_unlock(); 1245 return c; 1246 } 1247 } 1248 1249 rcu_read_unlock(); 1250 1251 return NULL; 1252 } 1253 1254 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev, 1255 __u8 handle) 1256 { 1257 struct hci_conn_hash *h = &hdev->conn_hash; 1258 struct hci_conn *c; 1259 1260 rcu_read_lock(); 1261 1262 list_for_each_entry_rcu(c, &h->list, list) { 1263 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY)) 1264 continue; 1265 1266 if (handle == c->iso_qos.ucast.cig) { 1267 rcu_read_unlock(); 1268 return c; 1269 } 1270 } 1271 1272 rcu_read_unlock(); 1273 1274 return NULL; 1275 } 1276 1277 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev, 1278 __u8 handle) 1279 { 1280 struct hci_conn_hash *h = &hdev->conn_hash; 1281 struct hci_conn *c; 1282 1283 rcu_read_lock(); 1284 1285 list_for_each_entry_rcu(c, &h->list, list) { 1286 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK) 1287 continue; 1288 1289 if (handle == c->iso_qos.bcast.big) { 1290 rcu_read_unlock(); 1291 return c; 1292 } 1293 } 1294 1295 rcu_read_unlock(); 1296 1297 return NULL; 1298 } 1299 1300 static inline struct hci_conn *hci_conn_hash_lookup_big_any_dst(struct hci_dev *hdev, 1301 __u8 handle) 1302 { 1303 struct hci_conn_hash *h = &hdev->conn_hash; 1304 struct hci_conn *c; 1305 1306 rcu_read_lock(); 1307 1308 list_for_each_entry_rcu(c, &h->list, list) { 1309 if (c->type != ISO_LINK) 1310 continue; 1311 1312 if (handle != BT_ISO_QOS_BIG_UNSET && handle == c->iso_qos.bcast.big) { 1313 rcu_read_unlock(); 1314 return c; 1315 } 1316 } 1317 1318 rcu_read_unlock(); 1319 1320 return NULL; 1321 } 1322 1323 static inline struct hci_conn * 1324 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big) 1325 { 1326 struct hci_conn_hash *h = &hdev->conn_hash; 1327 struct hci_conn *c; 1328 1329 rcu_read_lock(); 1330 1331 list_for_each_entry_rcu(c, &h->list, list) { 1332 if (c->type != ISO_LINK || 1333 !test_bit(HCI_CONN_PA_SYNC, &c->flags)) 1334 continue; 1335 1336 if (c->iso_qos.bcast.big == big) { 1337 rcu_read_unlock(); 1338 return c; 1339 } 1340 } 1341 rcu_read_unlock(); 1342 1343 return NULL; 1344 } 1345 1346 static inline struct hci_conn * 1347 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle) 1348 { 1349 struct hci_conn_hash *h = &hdev->conn_hash; 1350 struct hci_conn *c; 1351 1352 rcu_read_lock(); 1353 1354 list_for_each_entry_rcu(c, &h->list, list) { 1355 if (c->type != ISO_LINK || 1356 !test_bit(HCI_CONN_PA_SYNC, &c->flags)) 1357 continue; 1358 1359 if (c->sync_handle == sync_handle) { 1360 rcu_read_unlock(); 1361 return c; 1362 } 1363 } 1364 rcu_read_unlock(); 1365 1366 return NULL; 1367 } 1368 1369 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 1370 __u8 type, __u16 state) 1371 { 1372 struct hci_conn_hash *h = &hdev->conn_hash; 1373 struct hci_conn *c; 1374 1375 rcu_read_lock(); 1376 1377 list_for_each_entry_rcu(c, &h->list, list) { 1378 if (c->type == type && c->state == state) { 1379 rcu_read_unlock(); 1380 return c; 1381 } 1382 } 1383 1384 rcu_read_unlock(); 1385 1386 return NULL; 1387 } 1388 1389 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data); 1390 static inline void hci_conn_hash_list_state(struct hci_dev *hdev, 1391 hci_conn_func_t func, __u8 type, 1392 __u16 state, void *data) 1393 { 1394 struct hci_conn_hash *h = &hdev->conn_hash; 1395 struct hci_conn *c; 1396 1397 if (!func) 1398 return; 1399 1400 rcu_read_lock(); 1401 1402 list_for_each_entry_rcu(c, &h->list, list) { 1403 if (c->type == type && c->state == state) 1404 func(c, data); 1405 } 1406 1407 rcu_read_unlock(); 1408 } 1409 1410 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 1411 { 1412 struct hci_conn_hash *h = &hdev->conn_hash; 1413 struct hci_conn *c; 1414 1415 rcu_read_lock(); 1416 1417 list_for_each_entry_rcu(c, &h->list, list) { 1418 if (c->type == LE_LINK && c->state == BT_CONNECT && 1419 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 1420 rcu_read_unlock(); 1421 return c; 1422 } 1423 } 1424 1425 rcu_read_unlock(); 1426 1427 return NULL; 1428 } 1429 1430 /* Returns true if an le connection is in the scanning state */ 1431 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev) 1432 { 1433 struct hci_conn_hash *h = &hdev->conn_hash; 1434 struct hci_conn *c; 1435 1436 rcu_read_lock(); 1437 1438 list_for_each_entry_rcu(c, &h->list, list) { 1439 if (c->type == LE_LINK && c->state == BT_CONNECT && 1440 test_bit(HCI_CONN_SCANNING, &c->flags)) { 1441 rcu_read_unlock(); 1442 return true; 1443 } 1444 } 1445 1446 rcu_read_unlock(); 1447 1448 return false; 1449 } 1450 1451 int hci_disconnect(struct hci_conn *conn, __u8 reason); 1452 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 1453 void hci_sco_setup(struct hci_conn *conn, __u8 status); 1454 bool hci_iso_setup_path(struct hci_conn *conn); 1455 int hci_le_create_cis_pending(struct hci_dev *hdev); 1456 int hci_conn_check_create_cis(struct hci_conn *conn); 1457 1458 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 1459 u8 role, u16 handle); 1460 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type, 1461 bdaddr_t *dst, u8 role); 1462 void hci_conn_del(struct hci_conn *conn); 1463 void hci_conn_hash_flush(struct hci_dev *hdev); 1464 void hci_conn_check_pending(struct hci_dev *hdev); 1465 1466 struct hci_chan *hci_chan_create(struct hci_conn *conn); 1467 void hci_chan_del(struct hci_chan *chan); 1468 void hci_chan_list_flush(struct hci_conn *conn); 1469 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 1470 1471 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 1472 u8 dst_type, u8 sec_level, 1473 u16 conn_timeout, 1474 enum conn_reasons conn_reason); 1475 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 1476 u8 dst_type, bool dst_resolved, u8 sec_level, 1477 u16 conn_timeout, u8 role); 1478 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 1479 u8 sec_level, u8 auth_type, 1480 enum conn_reasons conn_reason); 1481 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 1482 __u16 setting, struct bt_codec *codec); 1483 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, 1484 __u8 dst_type, struct bt_iso_qos *qos); 1485 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst, 1486 struct bt_iso_qos *qos, 1487 __u8 base_len, __u8 *base); 1488 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, 1489 __u8 dst_type, struct bt_iso_qos *qos); 1490 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, 1491 __u8 dst_type, struct bt_iso_qos *qos, 1492 __u8 data_len, __u8 *data); 1493 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, 1494 __u8 sid, struct bt_iso_qos *qos); 1495 int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon, 1496 struct bt_iso_qos *qos, 1497 __u16 sync_handle, __u8 num_bis, __u8 bis[]); 1498 int hci_conn_check_link_mode(struct hci_conn *conn); 1499 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 1500 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 1501 bool initiator); 1502 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 1503 1504 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 1505 1506 void hci_conn_failed(struct hci_conn *conn, u8 status); 1507 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle); 1508 1509 /* 1510 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 1511 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 1512 * working or anything else. They just guarantee that the object is available 1513 * and can be dereferenced. So you can use its locks, local variables and any 1514 * other constant data. 1515 * Before accessing runtime data, you _must_ lock the object and then check that 1516 * it is still running. As soon as you release the locks, the connection might 1517 * get dropped, though. 1518 * 1519 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 1520 * how long the underlying connection is held. So every channel that runs on the 1521 * hci_conn object calls this to prevent the connection from disappearing. As 1522 * long as you hold a device, you must also guarantee that you have a valid 1523 * reference to the device via hci_conn_get() (or the initial reference from 1524 * hci_conn_add()). 1525 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 1526 * break because nobody cares for that. But this means, we cannot use 1527 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 1528 */ 1529 1530 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 1531 { 1532 get_device(&conn->dev); 1533 return conn; 1534 } 1535 1536 static inline void hci_conn_put(struct hci_conn *conn) 1537 { 1538 put_device(&conn->dev); 1539 } 1540 1541 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn) 1542 { 1543 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1544 1545 atomic_inc(&conn->refcnt); 1546 cancel_delayed_work(&conn->disc_work); 1547 1548 return conn; 1549 } 1550 1551 static inline void hci_conn_drop(struct hci_conn *conn) 1552 { 1553 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1554 1555 if (atomic_dec_and_test(&conn->refcnt)) { 1556 unsigned long timeo; 1557 1558 switch (conn->type) { 1559 case ACL_LINK: 1560 case LE_LINK: 1561 cancel_delayed_work(&conn->idle_work); 1562 if (conn->state == BT_CONNECTED) { 1563 timeo = conn->disc_timeout; 1564 if (!conn->out) 1565 timeo *= 2; 1566 } else { 1567 timeo = 0; 1568 } 1569 break; 1570 1571 case AMP_LINK: 1572 timeo = conn->disc_timeout; 1573 break; 1574 1575 default: 1576 timeo = 0; 1577 break; 1578 } 1579 1580 cancel_delayed_work(&conn->disc_work); 1581 queue_delayed_work(conn->hdev->workqueue, 1582 &conn->disc_work, timeo); 1583 } 1584 } 1585 1586 /* ----- HCI Devices ----- */ 1587 static inline void hci_dev_put(struct hci_dev *d) 1588 { 1589 BT_DBG("%s orig refcnt %d", d->name, 1590 kref_read(&d->dev.kobj.kref)); 1591 1592 put_device(&d->dev); 1593 } 1594 1595 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1596 { 1597 BT_DBG("%s orig refcnt %d", d->name, 1598 kref_read(&d->dev.kobj.kref)); 1599 1600 get_device(&d->dev); 1601 return d; 1602 } 1603 1604 #define hci_dev_lock(d) mutex_lock(&d->lock) 1605 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1606 1607 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1608 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1609 1610 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1611 { 1612 return dev_get_drvdata(&hdev->dev); 1613 } 1614 1615 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1616 { 1617 dev_set_drvdata(&hdev->dev, data); 1618 } 1619 1620 static inline void *hci_get_priv(struct hci_dev *hdev) 1621 { 1622 return (char *)hdev + sizeof(*hdev); 1623 } 1624 1625 struct hci_dev *hci_dev_get(int index); 1626 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1627 1628 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); 1629 1630 static inline struct hci_dev *hci_alloc_dev(void) 1631 { 1632 return hci_alloc_dev_priv(0); 1633 } 1634 1635 void hci_free_dev(struct hci_dev *hdev); 1636 int hci_register_dev(struct hci_dev *hdev); 1637 void hci_unregister_dev(struct hci_dev *hdev); 1638 void hci_release_dev(struct hci_dev *hdev); 1639 int hci_register_suspend_notifier(struct hci_dev *hdev); 1640 int hci_unregister_suspend_notifier(struct hci_dev *hdev); 1641 int hci_suspend_dev(struct hci_dev *hdev); 1642 int hci_resume_dev(struct hci_dev *hdev); 1643 int hci_reset_dev(struct hci_dev *hdev); 1644 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1645 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1646 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1647 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1648 1649 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) 1650 { 1651 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 1652 hdev->msft_opcode = opcode; 1653 #endif 1654 } 1655 1656 static inline void hci_set_aosp_capable(struct hci_dev *hdev) 1657 { 1658 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 1659 hdev->aosp_capable = true; 1660 #endif 1661 } 1662 1663 static inline void hci_devcd_setup(struct hci_dev *hdev) 1664 { 1665 #ifdef CONFIG_DEV_COREDUMP 1666 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx); 1667 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout); 1668 skb_queue_head_init(&hdev->dump.dump_q); 1669 #endif 1670 } 1671 1672 int hci_dev_open(__u16 dev); 1673 int hci_dev_close(__u16 dev); 1674 int hci_dev_do_close(struct hci_dev *hdev); 1675 int hci_dev_reset(__u16 dev); 1676 int hci_dev_reset_stat(__u16 dev); 1677 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1678 int hci_get_dev_list(void __user *arg); 1679 int hci_get_dev_info(void __user *arg); 1680 int hci_get_conn_list(void __user *arg); 1681 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1682 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1683 int hci_inquiry(void __user *arg); 1684 1685 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1686 bdaddr_t *bdaddr, u8 type); 1687 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1688 struct list_head *list, bdaddr_t *bdaddr, 1689 u8 type); 1690 struct bdaddr_list_with_flags * 1691 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1692 u8 type); 1693 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1694 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1695 u8 type, u8 *peer_irk, u8 *local_irk); 1696 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1697 u8 type, u32 flags); 1698 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1699 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1700 u8 type); 1701 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1702 u8 type); 1703 void hci_bdaddr_list_clear(struct list_head *list); 1704 1705 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1706 bdaddr_t *addr, u8 addr_type); 1707 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1708 bdaddr_t *addr, u8 addr_type); 1709 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1710 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1711 void hci_conn_params_free(struct hci_conn_params *param); 1712 1713 void hci_pend_le_list_del_init(struct hci_conn_params *param); 1714 void hci_pend_le_list_add(struct hci_conn_params *param, 1715 struct list_head *list); 1716 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1717 bdaddr_t *addr, 1718 u8 addr_type); 1719 1720 void hci_uuids_clear(struct hci_dev *hdev); 1721 1722 void hci_link_keys_clear(struct hci_dev *hdev); 1723 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1724 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1725 bdaddr_t *bdaddr, u8 *val, u8 type, 1726 u8 pin_len, bool *persistent); 1727 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1728 u8 addr_type, u8 type, u8 authenticated, 1729 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1730 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1731 u8 addr_type, u8 role); 1732 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1733 void hci_smp_ltks_clear(struct hci_dev *hdev); 1734 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1735 1736 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1737 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1738 u8 addr_type); 1739 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1740 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1741 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1742 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]); 1743 void hci_blocked_keys_clear(struct hci_dev *hdev); 1744 void hci_smp_irks_clear(struct hci_dev *hdev); 1745 1746 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1747 1748 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1749 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1750 bdaddr_t *bdaddr, u8 bdaddr_type); 1751 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1752 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1753 u8 *hash256, u8 *rand256); 1754 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1755 u8 bdaddr_type); 1756 1757 void hci_adv_instances_clear(struct hci_dev *hdev); 1758 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1759 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1760 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, 1761 u32 flags, u16 adv_data_len, u8 *adv_data, 1762 u16 scan_rsp_len, u8 *scan_rsp_data, 1763 u16 timeout, u16 duration, s8 tx_power, 1764 u32 min_interval, u32 max_interval, 1765 u8 mesh_handle); 1766 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, 1767 u32 flags, u8 data_len, u8 *data, 1768 u32 min_interval, u32 max_interval); 1769 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, 1770 u16 adv_data_len, u8 *adv_data, 1771 u16 scan_rsp_len, u8 *scan_rsp_data); 1772 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1773 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1774 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance); 1775 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); 1776 1777 void hci_adv_monitors_clear(struct hci_dev *hdev); 1778 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1779 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1780 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); 1781 int hci_remove_all_adv_monitor(struct hci_dev *hdev); 1782 bool hci_is_adv_monitoring(struct hci_dev *hdev); 1783 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); 1784 1785 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1786 1787 void hci_init_sysfs(struct hci_dev *hdev); 1788 void hci_conn_init_sysfs(struct hci_conn *conn); 1789 void hci_conn_add_sysfs(struct hci_conn *conn); 1790 void hci_conn_del_sysfs(struct hci_conn *conn); 1791 1792 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1793 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent) 1794 1795 /* ----- LMP capabilities ----- */ 1796 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1797 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1798 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1799 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1800 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1801 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1802 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1803 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1804 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1805 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1806 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1807 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M) 1808 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1809 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1810 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1811 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1812 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1813 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1814 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1815 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1816 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1817 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1818 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1819 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1820 1821 /* ----- Extended LMP capabilities ----- */ 1822 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL) 1823 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL) 1824 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1825 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1826 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1827 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1828 1829 /* ----- Host capabilities ----- */ 1830 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1831 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1832 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1833 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1834 1835 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1836 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1837 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1838 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1839 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ 1840 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) 1841 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ 1842 !adv->rpa_expired) 1843 1844 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1845 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1846 1847 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M)) 1848 1849 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1850 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1851 1852 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \ 1853 !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \ 1854 &(dev)->quirks)) 1855 1856 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1857 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1858 1859 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY) 1860 1861 /* Use LL Privacy based address resolution if supported */ 1862 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \ 1863 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY)) 1864 1865 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \ 1866 (hdev->commands[39] & 0x04)) 1867 1868 /* Use enhanced synchronous connection if command is supported and its quirk 1869 * has not been set. 1870 */ 1871 #define enhanced_sync_conn_capable(dev) \ 1872 (((dev)->commands[29] & 0x08) && \ 1873 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks)) 1874 1875 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1876 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1877 ((dev)->commands[37] & 0x40) && \ 1878 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks)) 1879 1880 /* Use ext create connection if command is supported */ 1881 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1882 1883 /* Extended advertising support */ 1884 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1885 1886 /* Maximum advertising length */ 1887 #define max_adv_len(dev) \ 1888 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH) 1889 1890 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789: 1891 * 1892 * C24: Mandatory if the LE Controller supports Connection State and either 1893 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported 1894 */ 1895 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \ 1896 ext_adv_capable(dev)) 1897 1898 /* Periodic advertising support */ 1899 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV)) 1900 1901 /* CIS Master/Slave and BIS support */ 1902 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev)) 1903 #define cis_capable(dev) \ 1904 (cis_central_capable(dev) || cis_peripheral_capable(dev)) 1905 #define cis_central_capable(dev) \ 1906 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL) 1907 #define cis_peripheral_capable(dev) \ 1908 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) 1909 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) 1910 #define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER) 1911 1912 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \ 1913 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks))) 1914 1915 /* ----- HCI protocols ----- */ 1916 #define HCI_PROTO_DEFER 0x01 1917 1918 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1919 __u8 type, __u8 *flags) 1920 { 1921 switch (type) { 1922 case ACL_LINK: 1923 return l2cap_connect_ind(hdev, bdaddr); 1924 1925 case SCO_LINK: 1926 case ESCO_LINK: 1927 return sco_connect_ind(hdev, bdaddr, flags); 1928 1929 case ISO_LINK: 1930 return iso_connect_ind(hdev, bdaddr, flags); 1931 1932 default: 1933 BT_ERR("unknown link type %d", type); 1934 return -EINVAL; 1935 } 1936 } 1937 1938 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1939 { 1940 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1941 return HCI_ERROR_REMOTE_USER_TERM; 1942 1943 return l2cap_disconn_ind(conn); 1944 } 1945 1946 /* ----- HCI callbacks ----- */ 1947 struct hci_cb { 1948 struct list_head list; 1949 1950 char *name; 1951 1952 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1953 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1954 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1955 __u8 encrypt); 1956 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1957 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1958 }; 1959 1960 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1961 { 1962 struct hci_cb *cb; 1963 1964 mutex_lock(&hci_cb_list_lock); 1965 list_for_each_entry(cb, &hci_cb_list, list) { 1966 if (cb->connect_cfm) 1967 cb->connect_cfm(conn, status); 1968 } 1969 mutex_unlock(&hci_cb_list_lock); 1970 1971 if (conn->connect_cfm_cb) 1972 conn->connect_cfm_cb(conn, status); 1973 } 1974 1975 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1976 { 1977 struct hci_cb *cb; 1978 1979 mutex_lock(&hci_cb_list_lock); 1980 list_for_each_entry(cb, &hci_cb_list, list) { 1981 if (cb->disconn_cfm) 1982 cb->disconn_cfm(conn, reason); 1983 } 1984 mutex_unlock(&hci_cb_list_lock); 1985 1986 if (conn->disconn_cfm_cb) 1987 conn->disconn_cfm_cb(conn, reason); 1988 } 1989 1990 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1991 { 1992 struct hci_cb *cb; 1993 __u8 encrypt; 1994 1995 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1996 return; 1997 1998 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1999 2000 mutex_lock(&hci_cb_list_lock); 2001 list_for_each_entry(cb, &hci_cb_list, list) { 2002 if (cb->security_cfm) 2003 cb->security_cfm(conn, status, encrypt); 2004 } 2005 mutex_unlock(&hci_cb_list_lock); 2006 2007 if (conn->security_cfm_cb) 2008 conn->security_cfm_cb(conn, status); 2009 } 2010 2011 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status) 2012 { 2013 struct hci_cb *cb; 2014 __u8 encrypt; 2015 2016 if (conn->state == BT_CONFIG) { 2017 if (!status) 2018 conn->state = BT_CONNECTED; 2019 2020 hci_connect_cfm(conn, status); 2021 hci_conn_drop(conn); 2022 return; 2023 } 2024 2025 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) 2026 encrypt = 0x00; 2027 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) 2028 encrypt = 0x02; 2029 else 2030 encrypt = 0x01; 2031 2032 if (!status) { 2033 if (conn->sec_level == BT_SECURITY_SDP) 2034 conn->sec_level = BT_SECURITY_LOW; 2035 2036 if (conn->pending_sec_level > conn->sec_level) 2037 conn->sec_level = conn->pending_sec_level; 2038 } 2039 2040 mutex_lock(&hci_cb_list_lock); 2041 list_for_each_entry(cb, &hci_cb_list, list) { 2042 if (cb->security_cfm) 2043 cb->security_cfm(conn, status, encrypt); 2044 } 2045 mutex_unlock(&hci_cb_list_lock); 2046 2047 if (conn->security_cfm_cb) 2048 conn->security_cfm_cb(conn, status); 2049 } 2050 2051 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 2052 { 2053 struct hci_cb *cb; 2054 2055 mutex_lock(&hci_cb_list_lock); 2056 list_for_each_entry(cb, &hci_cb_list, list) { 2057 if (cb->key_change_cfm) 2058 cb->key_change_cfm(conn, status); 2059 } 2060 mutex_unlock(&hci_cb_list_lock); 2061 } 2062 2063 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 2064 __u8 role) 2065 { 2066 struct hci_cb *cb; 2067 2068 mutex_lock(&hci_cb_list_lock); 2069 list_for_each_entry(cb, &hci_cb_list, list) { 2070 if (cb->role_switch_cfm) 2071 cb->role_switch_cfm(conn, status, role); 2072 } 2073 mutex_unlock(&hci_cb_list_lock); 2074 } 2075 2076 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 2077 { 2078 if (addr_type != ADDR_LE_DEV_RANDOM) 2079 return false; 2080 2081 if ((bdaddr->b[5] & 0xc0) == 0x40) 2082 return true; 2083 2084 return false; 2085 } 2086 2087 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 2088 { 2089 if (addr_type == ADDR_LE_DEV_PUBLIC) 2090 return true; 2091 2092 /* Check for Random Static address type */ 2093 if ((addr->b[5] & 0xc0) == 0xc0) 2094 return true; 2095 2096 return false; 2097 } 2098 2099 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 2100 bdaddr_t *bdaddr, u8 addr_type) 2101 { 2102 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 2103 return NULL; 2104 2105 return hci_find_irk_by_rpa(hdev, bdaddr); 2106 } 2107 2108 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 2109 u16 to_multiplier) 2110 { 2111 u16 max_latency; 2112 2113 if (min > max || min < 6 || max > 3200) 2114 return -EINVAL; 2115 2116 if (to_multiplier < 10 || to_multiplier > 3200) 2117 return -EINVAL; 2118 2119 if (max >= to_multiplier * 8) 2120 return -EINVAL; 2121 2122 max_latency = (to_multiplier * 4 / max) - 1; 2123 if (latency > 499 || latency > max_latency) 2124 return -EINVAL; 2125 2126 return 0; 2127 } 2128 2129 int hci_register_cb(struct hci_cb *hcb); 2130 int hci_unregister_cb(struct hci_cb *hcb); 2131 2132 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 2133 const void *param); 2134 2135 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 2136 const void *param); 2137 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 2138 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 2139 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); 2140 2141 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 2142 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); 2143 2144 u32 hci_conn_get_phy(struct hci_conn *conn); 2145 2146 /* ----- HCI Sockets ----- */ 2147 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 2148 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 2149 int flag, struct sock *skip_sk); 2150 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 2151 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 2152 void *data, u16 data_len, ktime_t tstamp, 2153 int flag, struct sock *skip_sk); 2154 2155 void hci_sock_dev_event(struct hci_dev *hdev, int event); 2156 2157 #define HCI_MGMT_VAR_LEN BIT(0) 2158 #define HCI_MGMT_NO_HDEV BIT(1) 2159 #define HCI_MGMT_UNTRUSTED BIT(2) 2160 #define HCI_MGMT_UNCONFIGURED BIT(3) 2161 #define HCI_MGMT_HDEV_OPTIONAL BIT(4) 2162 2163 struct hci_mgmt_handler { 2164 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 2165 u16 data_len); 2166 size_t data_len; 2167 unsigned long flags; 2168 }; 2169 2170 struct hci_mgmt_chan { 2171 struct list_head list; 2172 unsigned short channel; 2173 size_t handler_count; 2174 const struct hci_mgmt_handler *handlers; 2175 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 2176 }; 2177 2178 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 2179 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 2180 2181 /* Management interface */ 2182 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 2183 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 2184 BIT(BDADDR_LE_RANDOM)) 2185 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 2186 BIT(BDADDR_LE_PUBLIC) | \ 2187 BIT(BDADDR_LE_RANDOM)) 2188 2189 /* These LE scan and inquiry parameters were chosen according to LE General 2190 * Discovery Procedure specification. 2191 */ 2192 #define DISCOV_LE_SCAN_WIN 0x12 2193 #define DISCOV_LE_SCAN_INT 0x12 2194 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 2195 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 2196 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 2197 #define DISCOV_BREDR_INQUIRY_LEN 0x08 2198 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 2199 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ 2200 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ 2201 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */ 2202 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */ 2203 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */ 2204 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */ 2205 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10) 2206 2207 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */ 2208 2209 void mgmt_fill_version_info(void *ver); 2210 int mgmt_new_settings(struct hci_dev *hdev); 2211 void mgmt_index_added(struct hci_dev *hdev); 2212 void mgmt_index_removed(struct hci_dev *hdev); 2213 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 2214 void mgmt_power_on(struct hci_dev *hdev, int err); 2215 void __mgmt_power_off(struct hci_dev *hdev); 2216 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 2217 bool persistent); 2218 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 2219 u8 *name, u8 name_len); 2220 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 2221 u8 link_type, u8 addr_type, u8 reason, 2222 bool mgmt_connected); 2223 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 2224 u8 link_type, u8 addr_type, u8 status); 2225 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2226 u8 addr_type, u8 status); 2227 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 2228 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2229 u8 status); 2230 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2231 u8 status); 2232 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2233 u8 link_type, u8 addr_type, u32 value, 2234 u8 confirm_hint); 2235 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2236 u8 link_type, u8 addr_type, u8 status); 2237 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2238 u8 link_type, u8 addr_type, u8 status); 2239 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2240 u8 link_type, u8 addr_type); 2241 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2242 u8 link_type, u8 addr_type, u8 status); 2243 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2244 u8 link_type, u8 addr_type, u8 status); 2245 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 2246 u8 link_type, u8 addr_type, u32 passkey, 2247 u8 entered); 2248 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 2249 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 2250 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 2251 u8 status); 2252 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 2253 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 2254 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 2255 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2256 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 2257 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len, 2258 u64 instant); 2259 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2260 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 2261 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 2262 void mgmt_suspending(struct hci_dev *hdev, u8 state); 2263 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr, 2264 u8 addr_type); 2265 bool mgmt_powering_down(struct hci_dev *hdev); 2266 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 2267 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 2268 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 2269 bool persistent); 2270 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 2271 u8 bdaddr_type, u8 store_hint, u16 min_interval, 2272 u16 max_interval, u16 latency, u16 timeout); 2273 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 2274 bool mgmt_get_connectable(struct hci_dev *hdev); 2275 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 2276 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 2277 u8 instance); 2278 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 2279 u8 instance); 2280 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); 2281 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 2282 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, 2283 bdaddr_t *bdaddr, u8 addr_type); 2284 2285 int hci_abort_conn(struct hci_conn *conn, u8 reason); 2286 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 2287 u16 to_multiplier); 2288 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 2289 __u8 ltk[16], __u8 key_size); 2290 2291 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 2292 u8 *bdaddr_type); 2293 2294 #define SCO_AIRMODE_MASK 0x0003 2295 #define SCO_AIRMODE_CVSD 0x0000 2296 #define SCO_AIRMODE_TRANSP 0x0003 2297 2298 #define LOCAL_CODEC_ACL_MASK BIT(0) 2299 #define LOCAL_CODEC_SCO_MASK BIT(1) 2300 2301 #define TRANSPORT_TYPE_MAX 0x04 2302 2303 #endif /* __HCI_CORE_H */ 2304