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