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