1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 Copyright 2023 NXP 5 6 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License version 2 as 10 published by the Free Software Foundation; 11 12 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 13 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 15 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 16 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 17 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 18 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 19 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 20 21 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 22 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 23 SOFTWARE IS DISCLAIMED. 24 */ 25 26 #ifndef __HCI_CORE_H 27 #define __HCI_CORE_H 28 29 #include <linux/idr.h> 30 #include <linux/leds.h> 31 #include <linux/rculist.h> 32 33 #include <net/bluetooth/hci.h> 34 #include <net/bluetooth/hci_sync.h> 35 #include <net/bluetooth/hci_sock.h> 36 #include <net/bluetooth/coredump.h> 37 38 /* HCI priority */ 39 #define HCI_PRIO_MAX 7 40 41 /* HCI maximum id value */ 42 #define HCI_MAX_ID 10000 43 44 /* HCI Core structures */ 45 struct inquiry_data { 46 bdaddr_t bdaddr; 47 __u8 pscan_rep_mode; 48 __u8 pscan_period_mode; 49 __u8 pscan_mode; 50 __u8 dev_class[3]; 51 __le16 clock_offset; 52 __s8 rssi; 53 __u8 ssp_mode; 54 }; 55 56 struct inquiry_entry { 57 struct list_head all; /* inq_cache.all */ 58 struct list_head list; /* unknown or resolve */ 59 enum { 60 NAME_NOT_KNOWN, 61 NAME_NEEDED, 62 NAME_PENDING, 63 NAME_KNOWN, 64 } name_state; 65 __u32 timestamp; 66 struct inquiry_data data; 67 }; 68 69 struct discovery_state { 70 int type; 71 enum { 72 DISCOVERY_STOPPED, 73 DISCOVERY_STARTING, 74 DISCOVERY_FINDING, 75 DISCOVERY_RESOLVING, 76 DISCOVERY_STOPPING, 77 } state; 78 struct list_head all; /* All devices found during inquiry */ 79 struct list_head unknown; /* Name state not known */ 80 struct list_head resolve; /* Name needs to be resolved */ 81 __u32 timestamp; 82 bdaddr_t last_adv_addr; 83 u8 last_adv_addr_type; 84 s8 last_adv_rssi; 85 u32 last_adv_flags; 86 u8 last_adv_data[HCI_MAX_EXT_AD_LENGTH]; 87 u8 last_adv_data_len; 88 bool report_invalid_rssi; 89 bool result_filtering; 90 bool limited; 91 s8 rssi; 92 u16 uuid_count; 93 u8 (*uuids)[16]; 94 unsigned long scan_start; 95 unsigned long scan_duration; 96 unsigned long name_resolve_timeout; 97 }; 98 99 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */ 100 101 enum suspend_tasks { 102 SUSPEND_PAUSE_DISCOVERY, 103 SUSPEND_UNPAUSE_DISCOVERY, 104 105 SUSPEND_PAUSE_ADVERTISING, 106 SUSPEND_UNPAUSE_ADVERTISING, 107 108 SUSPEND_SCAN_DISABLE, 109 SUSPEND_SCAN_ENABLE, 110 SUSPEND_DISCONNECTING, 111 112 SUSPEND_POWERING_DOWN, 113 114 SUSPEND_PREPARE_NOTIFIER, 115 116 SUSPEND_SET_ADV_FILTER, 117 __SUSPEND_NUM_TASKS 118 }; 119 120 enum suspended_state { 121 BT_RUNNING = 0, 122 BT_SUSPEND_DISCONNECT, 123 BT_SUSPEND_CONFIGURE_WAKE, 124 }; 125 126 struct hci_conn_hash { 127 struct list_head list; 128 unsigned int acl_num; 129 unsigned int amp_num; 130 unsigned int sco_num; 131 unsigned int iso_num; 132 unsigned int le_num; 133 unsigned int le_num_peripheral; 134 }; 135 136 struct bdaddr_list { 137 struct list_head list; 138 bdaddr_t bdaddr; 139 u8 bdaddr_type; 140 }; 141 142 struct codec_list { 143 struct list_head list; 144 u8 id; 145 __u16 cid; 146 __u16 vid; 147 u8 transport; 148 u8 num_caps; 149 u32 len; 150 struct hci_codec_caps caps[]; 151 }; 152 153 struct bdaddr_list_with_irk { 154 struct list_head list; 155 bdaddr_t bdaddr; 156 u8 bdaddr_type; 157 u8 peer_irk[16]; 158 u8 local_irk[16]; 159 }; 160 161 /* Bitmask of connection flags */ 162 enum hci_conn_flags { 163 HCI_CONN_FLAG_REMOTE_WAKEUP = 1, 164 HCI_CONN_FLAG_DEVICE_PRIVACY = 2, 165 }; 166 typedef u8 hci_conn_flags_t; 167 168 struct bdaddr_list_with_flags { 169 struct list_head list; 170 bdaddr_t bdaddr; 171 u8 bdaddr_type; 172 hci_conn_flags_t flags; 173 }; 174 175 struct bt_uuid { 176 struct list_head list; 177 u8 uuid[16]; 178 u8 size; 179 u8 svc_hint; 180 }; 181 182 struct blocked_key { 183 struct list_head list; 184 struct rcu_head rcu; 185 u8 type; 186 u8 val[16]; 187 }; 188 189 struct smp_csrk { 190 bdaddr_t bdaddr; 191 u8 bdaddr_type; 192 u8 link_type; 193 u8 type; 194 u8 val[16]; 195 }; 196 197 struct smp_ltk { 198 struct list_head list; 199 struct rcu_head rcu; 200 bdaddr_t bdaddr; 201 u8 bdaddr_type; 202 u8 link_type; 203 u8 authenticated; 204 u8 type; 205 u8 enc_size; 206 __le16 ediv; 207 __le64 rand; 208 u8 val[16]; 209 }; 210 211 struct smp_irk { 212 struct list_head list; 213 struct rcu_head rcu; 214 bdaddr_t rpa; 215 bdaddr_t bdaddr; 216 u8 addr_type; 217 u8 link_type; 218 u8 val[16]; 219 }; 220 221 struct link_key { 222 struct list_head list; 223 struct rcu_head rcu; 224 bdaddr_t bdaddr; 225 u8 bdaddr_type; 226 u8 link_type; 227 u8 type; 228 u8 val[HCI_LINK_KEY_SIZE]; 229 u8 pin_len; 230 }; 231 232 struct oob_data { 233 struct list_head list; 234 bdaddr_t bdaddr; 235 u8 bdaddr_type; 236 u8 present; 237 u8 hash192[16]; 238 u8 rand192[16]; 239 u8 hash256[16]; 240 u8 rand256[16]; 241 }; 242 243 struct adv_info { 244 struct list_head list; 245 bool enabled; 246 bool pending; 247 bool periodic; 248 __u8 mesh; 249 __u8 instance; 250 __u32 flags; 251 __u16 timeout; 252 __u16 remaining_time; 253 __u16 duration; 254 __u16 adv_data_len; 255 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 256 bool adv_data_changed; 257 __u16 scan_rsp_len; 258 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 259 bool scan_rsp_changed; 260 __u16 per_adv_data_len; 261 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 262 __s8 tx_power; 263 __u32 min_interval; 264 __u32 max_interval; 265 bdaddr_t random_addr; 266 bool rpa_expired; 267 struct delayed_work rpa_expired_cb; 268 }; 269 270 #define HCI_MAX_ADV_INSTANCES 5 271 #define HCI_DEFAULT_ADV_DURATION 2 272 273 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F 274 275 #define DATA_CMP(_d1, _l1, _d2, _l2) \ 276 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2) 277 278 #define ADV_DATA_CMP(_adv, _data, _len) \ 279 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len) 280 281 #define SCAN_RSP_CMP(_adv, _data, _len) \ 282 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len) 283 284 struct monitored_device { 285 struct list_head list; 286 287 bdaddr_t bdaddr; 288 __u8 addr_type; 289 __u16 handle; 290 bool notified; 291 }; 292 293 struct adv_pattern { 294 struct list_head list; 295 __u8 ad_type; 296 __u8 offset; 297 __u8 length; 298 __u8 value[HCI_MAX_EXT_AD_LENGTH]; 299 }; 300 301 struct adv_rssi_thresholds { 302 __s8 low_threshold; 303 __s8 high_threshold; 304 __u16 low_threshold_timeout; 305 __u16 high_threshold_timeout; 306 __u8 sampling_period; 307 }; 308 309 struct adv_monitor { 310 struct list_head patterns; 311 struct adv_rssi_thresholds rssi; 312 __u16 handle; 313 314 enum { 315 ADV_MONITOR_STATE_NOT_REGISTERED, 316 ADV_MONITOR_STATE_REGISTERED, 317 ADV_MONITOR_STATE_OFFLOADED 318 } state; 319 }; 320 321 #define HCI_MIN_ADV_MONITOR_HANDLE 1 322 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32 323 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16 324 #define HCI_ADV_MONITOR_EXT_NONE 1 325 #define HCI_ADV_MONITOR_EXT_MSFT 2 326 327 #define HCI_MAX_SHORT_NAME_LENGTH 10 328 329 #define HCI_CONN_HANDLE_MAX 0x0eff 330 #define HCI_CONN_HANDLE_UNSET(_handle) (_handle > HCI_CONN_HANDLE_MAX) 331 332 /* Min encryption key size to match with SMP */ 333 #define HCI_MIN_ENC_KEY_SIZE 7 334 335 /* Default LE RPA expiry time, 15 minutes */ 336 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 337 338 /* Default min/max age of connection information (1s/3s) */ 339 #define DEFAULT_CONN_INFO_MIN_AGE 1000 340 #define DEFAULT_CONN_INFO_MAX_AGE 3000 341 /* Default authenticated payload timeout 30s */ 342 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8 343 344 struct amp_assoc { 345 __u16 len; 346 __u16 offset; 347 __u16 rem_len; 348 __u16 len_so_far; 349 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 350 }; 351 352 #define HCI_MAX_PAGES 3 353 354 struct hci_dev { 355 struct list_head list; 356 struct mutex lock; 357 358 struct ida unset_handle_ida; 359 360 const char *name; 361 unsigned long flags; 362 __u16 id; 363 __u8 bus; 364 __u8 dev_type; 365 bdaddr_t bdaddr; 366 bdaddr_t setup_addr; 367 bdaddr_t public_addr; 368 bdaddr_t random_addr; 369 bdaddr_t static_addr; 370 __u8 adv_addr_type; 371 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 372 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 373 __u8 eir[HCI_MAX_EIR_LENGTH]; 374 __u16 appearance; 375 __u8 dev_class[3]; 376 __u8 major_class; 377 __u8 minor_class; 378 __u8 max_page; 379 __u8 features[HCI_MAX_PAGES][8]; 380 __u8 le_features[8]; 381 __u8 le_accept_list_size; 382 __u8 le_resolv_list_size; 383 __u8 le_num_of_adv_sets; 384 __u8 le_states[8]; 385 __u8 mesh_ad_types[16]; 386 __u8 mesh_send_ref; 387 __u8 commands[64]; 388 __u8 hci_ver; 389 __u16 hci_rev; 390 __u8 lmp_ver; 391 __u16 manufacturer; 392 __u16 lmp_subver; 393 __u16 voice_setting; 394 __u8 num_iac; 395 __u16 stored_max_keys; 396 __u16 stored_num_keys; 397 __u8 io_capability; 398 __s8 inq_tx_power; 399 __u8 err_data_reporting; 400 __u16 page_scan_interval; 401 __u16 page_scan_window; 402 __u8 page_scan_type; 403 __u8 le_adv_channel_map; 404 __u16 le_adv_min_interval; 405 __u16 le_adv_max_interval; 406 __u8 le_scan_type; 407 __u16 le_scan_interval; 408 __u16 le_scan_window; 409 __u16 le_scan_int_suspend; 410 __u16 le_scan_window_suspend; 411 __u16 le_scan_int_discovery; 412 __u16 le_scan_window_discovery; 413 __u16 le_scan_int_adv_monitor; 414 __u16 le_scan_window_adv_monitor; 415 __u16 le_scan_int_connect; 416 __u16 le_scan_window_connect; 417 __u16 le_conn_min_interval; 418 __u16 le_conn_max_interval; 419 __u16 le_conn_latency; 420 __u16 le_supv_timeout; 421 __u16 le_def_tx_len; 422 __u16 le_def_tx_time; 423 __u16 le_max_tx_len; 424 __u16 le_max_tx_time; 425 __u16 le_max_rx_len; 426 __u16 le_max_rx_time; 427 __u8 le_max_key_size; 428 __u8 le_min_key_size; 429 __u16 discov_interleaved_timeout; 430 __u16 conn_info_min_age; 431 __u16 conn_info_max_age; 432 __u16 auth_payload_timeout; 433 __u8 min_enc_key_size; 434 __u8 max_enc_key_size; 435 __u8 pairing_opts; 436 __u8 ssp_debug_mode; 437 __u8 hw_error_code; 438 __u32 clock; 439 __u16 advmon_allowlist_duration; 440 __u16 advmon_no_filter_duration; 441 __u8 enable_advmon_interleave_scan; 442 443 __u16 devid_source; 444 __u16 devid_vendor; 445 __u16 devid_product; 446 __u16 devid_version; 447 448 __u8 def_page_scan_type; 449 __u16 def_page_scan_int; 450 __u16 def_page_scan_window; 451 __u8 def_inq_scan_type; 452 __u16 def_inq_scan_int; 453 __u16 def_inq_scan_window; 454 __u16 def_br_lsto; 455 __u16 def_page_timeout; 456 __u16 def_multi_adv_rotation_duration; 457 __u16 def_le_autoconnect_timeout; 458 __s8 min_le_tx_power; 459 __s8 max_le_tx_power; 460 461 __u16 pkt_type; 462 __u16 esco_type; 463 __u16 link_policy; 464 __u16 link_mode; 465 466 __u32 idle_timeout; 467 __u16 sniff_min_interval; 468 __u16 sniff_max_interval; 469 470 __u8 amp_status; 471 __u32 amp_total_bw; 472 __u32 amp_max_bw; 473 __u32 amp_min_latency; 474 __u32 amp_max_pdu; 475 __u8 amp_type; 476 __u16 amp_pal_cap; 477 __u16 amp_assoc_size; 478 __u32 amp_max_flush_to; 479 __u32 amp_be_flush_to; 480 481 struct amp_assoc loc_assoc; 482 483 __u8 flow_ctl_mode; 484 485 unsigned int auto_accept_delay; 486 487 unsigned long quirks; 488 489 atomic_t cmd_cnt; 490 unsigned int acl_cnt; 491 unsigned int sco_cnt; 492 unsigned int le_cnt; 493 unsigned int iso_cnt; 494 495 unsigned int acl_mtu; 496 unsigned int sco_mtu; 497 unsigned int le_mtu; 498 unsigned int iso_mtu; 499 unsigned int acl_pkts; 500 unsigned int sco_pkts; 501 unsigned int le_pkts; 502 unsigned int iso_pkts; 503 504 __u16 block_len; 505 __u16 block_mtu; 506 __u16 num_blocks; 507 __u16 block_cnt; 508 509 unsigned long acl_last_tx; 510 unsigned long sco_last_tx; 511 unsigned long le_last_tx; 512 513 __u8 le_tx_def_phys; 514 __u8 le_rx_def_phys; 515 516 struct workqueue_struct *workqueue; 517 struct workqueue_struct *req_workqueue; 518 519 struct work_struct power_on; 520 struct delayed_work power_off; 521 struct work_struct error_reset; 522 struct work_struct cmd_sync_work; 523 struct list_head cmd_sync_work_list; 524 struct mutex cmd_sync_work_lock; 525 struct mutex unregister_lock; 526 struct work_struct cmd_sync_cancel_work; 527 struct work_struct reenable_adv_work; 528 529 __u16 discov_timeout; 530 struct delayed_work discov_off; 531 532 struct delayed_work service_cache; 533 534 struct delayed_work cmd_timer; 535 struct delayed_work ncmd_timer; 536 537 struct work_struct rx_work; 538 struct work_struct cmd_work; 539 struct work_struct tx_work; 540 541 struct delayed_work le_scan_disable; 542 struct delayed_work le_scan_restart; 543 544 struct sk_buff_head rx_q; 545 struct sk_buff_head raw_q; 546 struct sk_buff_head cmd_q; 547 548 struct sk_buff *sent_cmd; 549 struct sk_buff *recv_event; 550 551 struct mutex req_lock; 552 wait_queue_head_t req_wait_q; 553 __u32 req_status; 554 __u32 req_result; 555 struct sk_buff *req_skb; 556 struct sk_buff *req_rsp; 557 558 void *smp_data; 559 void *smp_bredr_data; 560 561 struct discovery_state discovery; 562 563 int discovery_old_state; 564 bool discovery_paused; 565 int advertising_old_state; 566 bool advertising_paused; 567 568 struct notifier_block suspend_notifier; 569 enum suspended_state suspend_state_next; 570 enum suspended_state suspend_state; 571 bool scanning_paused; 572 bool suspended; 573 u8 wake_reason; 574 bdaddr_t wake_addr; 575 u8 wake_addr_type; 576 577 struct hci_conn_hash conn_hash; 578 579 struct list_head mesh_pending; 580 struct list_head mgmt_pending; 581 struct list_head reject_list; 582 struct list_head accept_list; 583 struct list_head uuids; 584 struct list_head link_keys; 585 struct list_head long_term_keys; 586 struct list_head identity_resolving_keys; 587 struct list_head remote_oob_data; 588 struct list_head le_accept_list; 589 struct list_head le_resolv_list; 590 struct list_head le_conn_params; 591 struct list_head pend_le_conns; 592 struct list_head pend_le_reports; 593 struct list_head blocked_keys; 594 struct list_head local_codecs; 595 596 struct hci_dev_stats stat; 597 598 atomic_t promisc; 599 600 const char *hw_info; 601 const char *fw_info; 602 struct dentry *debugfs; 603 604 struct hci_devcoredump dump; 605 606 struct device dev; 607 608 struct rfkill *rfkill; 609 610 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 611 hci_conn_flags_t conn_flags; 612 613 __s8 adv_tx_power; 614 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 615 __u8 adv_data_len; 616 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 617 __u8 scan_rsp_data_len; 618 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 619 __u8 per_adv_data_len; 620 621 struct list_head adv_instances; 622 unsigned int adv_instance_cnt; 623 __u8 cur_adv_instance; 624 __u16 adv_instance_timeout; 625 struct delayed_work adv_instance_expire; 626 627 struct idr adv_monitors_idr; 628 unsigned int adv_monitors_cnt; 629 630 __u8 irk[16]; 631 __u32 rpa_timeout; 632 struct delayed_work rpa_expired; 633 bdaddr_t rpa; 634 635 struct delayed_work mesh_send_done; 636 637 enum { 638 INTERLEAVE_SCAN_NONE, 639 INTERLEAVE_SCAN_NO_FILTER, 640 INTERLEAVE_SCAN_ALLOWLIST 641 } interleave_scan_state; 642 643 struct delayed_work interleave_scan; 644 645 struct list_head monitored_devices; 646 bool advmon_pend_notify; 647 648 #if IS_ENABLED(CONFIG_BT_LEDS) 649 struct led_trigger *power_led; 650 #endif 651 652 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 653 __u16 msft_opcode; 654 void *msft_data; 655 bool msft_curve_validity; 656 #endif 657 658 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 659 bool aosp_capable; 660 bool aosp_quality_report; 661 #endif 662 663 int (*open)(struct hci_dev *hdev); 664 int (*close)(struct hci_dev *hdev); 665 int (*flush)(struct hci_dev *hdev); 666 int (*setup)(struct hci_dev *hdev); 667 int (*shutdown)(struct hci_dev *hdev); 668 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 669 void (*notify)(struct hci_dev *hdev, unsigned int evt); 670 void (*hw_error)(struct hci_dev *hdev, u8 code); 671 int (*post_init)(struct hci_dev *hdev); 672 int (*set_diag)(struct hci_dev *hdev, bool enable); 673 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 674 void (*cmd_timeout)(struct hci_dev *hdev); 675 void (*reset)(struct hci_dev *hdev); 676 bool (*wakeup)(struct hci_dev *hdev); 677 int (*set_quality_report)(struct hci_dev *hdev, bool enable); 678 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path); 679 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type, 680 struct bt_codec *codec, __u8 *vnd_len, 681 __u8 **vnd_data); 682 }; 683 684 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 685 686 enum conn_reasons { 687 CONN_REASON_PAIR_DEVICE, 688 CONN_REASON_L2CAP_CHAN, 689 CONN_REASON_SCO_CONNECT, 690 CONN_REASON_ISO_CONNECT, 691 }; 692 693 struct hci_conn { 694 struct list_head list; 695 696 atomic_t refcnt; 697 698 bdaddr_t dst; 699 __u8 dst_type; 700 bdaddr_t src; 701 __u8 src_type; 702 bdaddr_t init_addr; 703 __u8 init_addr_type; 704 bdaddr_t resp_addr; 705 __u8 resp_addr_type; 706 __u8 adv_instance; 707 __u16 handle; 708 __u16 sync_handle; 709 __u16 state; 710 __u16 mtu; 711 __u8 mode; 712 __u8 type; 713 __u8 role; 714 bool out; 715 __u8 attempt; 716 __u8 dev_class[3]; 717 __u8 features[HCI_MAX_PAGES][8]; 718 __u16 pkt_type; 719 __u16 link_policy; 720 __u8 key_type; 721 __u8 auth_type; 722 __u8 sec_level; 723 __u8 pending_sec_level; 724 __u8 pin_length; 725 __u8 enc_key_size; 726 __u8 io_capability; 727 __u32 passkey_notify; 728 __u8 passkey_entered; 729 __u16 disc_timeout; 730 __u16 conn_timeout; 731 __u16 setting; 732 __u16 auth_payload_timeout; 733 __u16 le_conn_min_interval; 734 __u16 le_conn_max_interval; 735 __u16 le_conn_interval; 736 __u16 le_conn_latency; 737 __u16 le_supv_timeout; 738 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH]; 739 __u8 le_adv_data_len; 740 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH]; 741 __u8 le_per_adv_data_len; 742 __u8 le_tx_phy; 743 __u8 le_rx_phy; 744 __s8 rssi; 745 __s8 tx_power; 746 __s8 max_tx_power; 747 struct bt_iso_qos iso_qos; 748 unsigned long flags; 749 750 enum conn_reasons conn_reason; 751 __u8 abort_reason; 752 753 __u32 clock; 754 __u16 clock_accuracy; 755 756 unsigned long conn_info_timestamp; 757 758 __u8 remote_cap; 759 __u8 remote_auth; 760 __u8 remote_id; 761 762 unsigned int sent; 763 764 struct sk_buff_head data_q; 765 struct list_head chan_list; 766 767 struct delayed_work disc_work; 768 struct delayed_work auto_accept_work; 769 struct delayed_work idle_work; 770 struct delayed_work le_conn_timeout; 771 772 struct device dev; 773 struct dentry *debugfs; 774 775 struct hci_dev *hdev; 776 void *l2cap_data; 777 void *sco_data; 778 void *iso_data; 779 struct amp_mgr *amp_mgr; 780 781 struct list_head link_list; 782 struct hci_conn *parent; 783 struct hci_link *link; 784 785 struct bt_codec codec; 786 787 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 788 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 789 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 790 791 void (*cleanup)(struct hci_conn *conn); 792 }; 793 794 struct hci_link { 795 struct list_head list; 796 struct hci_conn *conn; 797 }; 798 799 struct hci_chan { 800 struct list_head list; 801 __u16 handle; 802 struct hci_conn *conn; 803 struct sk_buff_head data_q; 804 unsigned int sent; 805 __u8 state; 806 bool amp; 807 }; 808 809 struct hci_conn_params { 810 struct list_head list; 811 struct list_head action; 812 813 bdaddr_t addr; 814 u8 addr_type; 815 816 u16 conn_min_interval; 817 u16 conn_max_interval; 818 u16 conn_latency; 819 u16 supervision_timeout; 820 821 enum { 822 HCI_AUTO_CONN_DISABLED, 823 HCI_AUTO_CONN_REPORT, 824 HCI_AUTO_CONN_DIRECT, 825 HCI_AUTO_CONN_ALWAYS, 826 HCI_AUTO_CONN_LINK_LOSS, 827 HCI_AUTO_CONN_EXPLICIT, 828 } auto_connect; 829 830 struct hci_conn *conn; 831 bool explicit_connect; 832 /* Accessed without hdev->lock: */ 833 hci_conn_flags_t flags; 834 u8 privacy_mode; 835 }; 836 837 extern struct list_head hci_dev_list; 838 extern struct list_head hci_cb_list; 839 extern rwlock_t hci_dev_list_lock; 840 extern struct mutex hci_cb_list_lock; 841 842 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 843 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 844 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 845 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 846 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 847 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 848 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 849 850 #define hci_dev_clear_volatile_flags(hdev) \ 851 do { \ 852 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 853 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 854 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\ 855 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 856 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \ 857 } while (0) 858 859 #define hci_dev_le_state_simultaneous(hdev) \ 860 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \ 861 (hdev->le_states[4] & 0x08) && /* Central */ \ 862 (hdev->le_states[4] & 0x40) && /* Peripheral */ \ 863 (hdev->le_states[3] & 0x10)) /* Simultaneous */ 864 865 /* ----- HCI interface to upper protocols ----- */ 866 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 867 int l2cap_disconn_ind(struct hci_conn *hcon); 868 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 869 870 #if IS_ENABLED(CONFIG_BT_BREDR) 871 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 872 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 873 #else 874 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 875 __u8 *flags) 876 { 877 return 0; 878 } 879 880 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 881 { 882 } 883 #endif 884 885 #if IS_ENABLED(CONFIG_BT_LE) 886 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 887 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 888 #else 889 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 890 __u8 *flags) 891 { 892 return 0; 893 } 894 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, 895 u16 flags) 896 { 897 } 898 #endif 899 900 /* ----- Inquiry cache ----- */ 901 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 902 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 903 904 static inline void discovery_init(struct hci_dev *hdev) 905 { 906 hdev->discovery.state = DISCOVERY_STOPPED; 907 INIT_LIST_HEAD(&hdev->discovery.all); 908 INIT_LIST_HEAD(&hdev->discovery.unknown); 909 INIT_LIST_HEAD(&hdev->discovery.resolve); 910 hdev->discovery.report_invalid_rssi = true; 911 hdev->discovery.rssi = HCI_RSSI_INVALID; 912 } 913 914 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 915 { 916 hdev->discovery.result_filtering = false; 917 hdev->discovery.report_invalid_rssi = true; 918 hdev->discovery.rssi = HCI_RSSI_INVALID; 919 hdev->discovery.uuid_count = 0; 920 kfree(hdev->discovery.uuids); 921 hdev->discovery.uuids = NULL; 922 hdev->discovery.scan_start = 0; 923 hdev->discovery.scan_duration = 0; 924 } 925 926 bool hci_discovery_active(struct hci_dev *hdev); 927 928 void hci_discovery_set_state(struct hci_dev *hdev, int state); 929 930 static inline int inquiry_cache_empty(struct hci_dev *hdev) 931 { 932 return list_empty(&hdev->discovery.all); 933 } 934 935 static inline long inquiry_cache_age(struct hci_dev *hdev) 936 { 937 struct discovery_state *c = &hdev->discovery; 938 return jiffies - c->timestamp; 939 } 940 941 static inline long inquiry_entry_age(struct inquiry_entry *e) 942 { 943 return jiffies - e->timestamp; 944 } 945 946 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 947 bdaddr_t *bdaddr); 948 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 949 bdaddr_t *bdaddr); 950 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 951 bdaddr_t *bdaddr, 952 int state); 953 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 954 struct inquiry_entry *ie); 955 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 956 bool name_known); 957 void hci_inquiry_cache_flush(struct hci_dev *hdev); 958 959 /* ----- HCI Connections ----- */ 960 enum { 961 HCI_CONN_AUTH_PEND, 962 HCI_CONN_ENCRYPT_PEND, 963 HCI_CONN_RSWITCH_PEND, 964 HCI_CONN_MODE_CHANGE_PEND, 965 HCI_CONN_SCO_SETUP_PEND, 966 HCI_CONN_MGMT_CONNECTED, 967 HCI_CONN_SSP_ENABLED, 968 HCI_CONN_SC_ENABLED, 969 HCI_CONN_AES_CCM, 970 HCI_CONN_POWER_SAVE, 971 HCI_CONN_FLUSH_KEY, 972 HCI_CONN_ENCRYPT, 973 HCI_CONN_AUTH, 974 HCI_CONN_SECURE, 975 HCI_CONN_FIPS, 976 HCI_CONN_STK_ENCRYPT, 977 HCI_CONN_AUTH_INITIATOR, 978 HCI_CONN_DROP, 979 HCI_CONN_CANCEL, 980 HCI_CONN_PARAM_REMOVAL_PEND, 981 HCI_CONN_NEW_LINK_KEY, 982 HCI_CONN_SCANNING, 983 HCI_CONN_AUTH_FAILURE, 984 HCI_CONN_PER_ADV, 985 HCI_CONN_BIG_CREATED, 986 HCI_CONN_CREATE_CIS, 987 HCI_CONN_BIG_SYNC, 988 HCI_CONN_BIG_SYNC_FAILED, 989 HCI_CONN_PA_SYNC, 990 HCI_CONN_PA_SYNC_FAILED, 991 }; 992 993 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 994 { 995 struct hci_dev *hdev = conn->hdev; 996 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 997 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 998 } 999 1000 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 1001 { 1002 struct hci_dev *hdev = conn->hdev; 1003 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 1004 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 1005 } 1006 1007 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 1008 { 1009 struct hci_conn_hash *h = &hdev->conn_hash; 1010 list_add_tail_rcu(&c->list, &h->list); 1011 switch (c->type) { 1012 case ACL_LINK: 1013 h->acl_num++; 1014 break; 1015 case AMP_LINK: 1016 h->amp_num++; 1017 break; 1018 case LE_LINK: 1019 h->le_num++; 1020 if (c->role == HCI_ROLE_SLAVE) 1021 h->le_num_peripheral++; 1022 break; 1023 case SCO_LINK: 1024 case ESCO_LINK: 1025 h->sco_num++; 1026 break; 1027 case ISO_LINK: 1028 h->iso_num++; 1029 break; 1030 } 1031 } 1032 1033 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 1034 { 1035 struct hci_conn_hash *h = &hdev->conn_hash; 1036 1037 list_del_rcu(&c->list); 1038 synchronize_rcu(); 1039 1040 switch (c->type) { 1041 case ACL_LINK: 1042 h->acl_num--; 1043 break; 1044 case AMP_LINK: 1045 h->amp_num--; 1046 break; 1047 case LE_LINK: 1048 h->le_num--; 1049 if (c->role == HCI_ROLE_SLAVE) 1050 h->le_num_peripheral--; 1051 break; 1052 case SCO_LINK: 1053 case ESCO_LINK: 1054 h->sco_num--; 1055 break; 1056 case ISO_LINK: 1057 h->iso_num--; 1058 break; 1059 } 1060 } 1061 1062 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 1063 { 1064 struct hci_conn_hash *h = &hdev->conn_hash; 1065 switch (type) { 1066 case ACL_LINK: 1067 return h->acl_num; 1068 case AMP_LINK: 1069 return h->amp_num; 1070 case LE_LINK: 1071 return h->le_num; 1072 case SCO_LINK: 1073 case ESCO_LINK: 1074 return h->sco_num; 1075 case ISO_LINK: 1076 return h->iso_num; 1077 default: 1078 return 0; 1079 } 1080 } 1081 1082 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 1083 { 1084 struct hci_conn_hash *c = &hdev->conn_hash; 1085 1086 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num; 1087 } 1088 1089 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 1090 { 1091 struct hci_conn_hash *h = &hdev->conn_hash; 1092 struct hci_conn *c; 1093 __u8 type = INVALID_LINK; 1094 1095 rcu_read_lock(); 1096 1097 list_for_each_entry_rcu(c, &h->list, list) { 1098 if (c->handle == handle) { 1099 type = c->type; 1100 break; 1101 } 1102 } 1103 1104 rcu_read_unlock(); 1105 1106 return type; 1107 } 1108 1109 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev, 1110 bdaddr_t *ba, __u8 bis) 1111 { 1112 struct hci_conn_hash *h = &hdev->conn_hash; 1113 struct hci_conn *c; 1114 1115 rcu_read_lock(); 1116 1117 list_for_each_entry_rcu(c, &h->list, list) { 1118 if (bacmp(&c->dst, ba) || c->type != ISO_LINK) 1119 continue; 1120 1121 if (c->iso_qos.bcast.bis == bis) { 1122 rcu_read_unlock(); 1123 return c; 1124 } 1125 } 1126 rcu_read_unlock(); 1127 1128 return NULL; 1129 } 1130 1131 static inline struct hci_conn * 1132 hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev, 1133 bdaddr_t *ba, 1134 __u8 big, __u8 bis) 1135 { 1136 struct hci_conn_hash *h = &hdev->conn_hash; 1137 struct hci_conn *c; 1138 1139 rcu_read_lock(); 1140 1141 list_for_each_entry_rcu(c, &h->list, list) { 1142 if (bacmp(&c->dst, ba) || c->type != ISO_LINK || 1143 !test_bit(HCI_CONN_PER_ADV, &c->flags)) 1144 continue; 1145 1146 if (c->iso_qos.bcast.big == big && 1147 c->iso_qos.bcast.bis == bis) { 1148 rcu_read_unlock(); 1149 return c; 1150 } 1151 } 1152 rcu_read_unlock(); 1153 1154 return NULL; 1155 } 1156 1157 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 1158 __u16 handle) 1159 { 1160 struct hci_conn_hash *h = &hdev->conn_hash; 1161 struct hci_conn *c; 1162 1163 rcu_read_lock(); 1164 1165 list_for_each_entry_rcu(c, &h->list, list) { 1166 if (c->handle == handle) { 1167 rcu_read_unlock(); 1168 return c; 1169 } 1170 } 1171 rcu_read_unlock(); 1172 1173 return NULL; 1174 } 1175 1176 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 1177 __u8 type, bdaddr_t *ba) 1178 { 1179 struct hci_conn_hash *h = &hdev->conn_hash; 1180 struct hci_conn *c; 1181 1182 rcu_read_lock(); 1183 1184 list_for_each_entry_rcu(c, &h->list, list) { 1185 if (c->type == type && !bacmp(&c->dst, ba)) { 1186 rcu_read_unlock(); 1187 return c; 1188 } 1189 } 1190 1191 rcu_read_unlock(); 1192 1193 return NULL; 1194 } 1195 1196 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 1197 bdaddr_t *ba, 1198 __u8 ba_type) 1199 { 1200 struct hci_conn_hash *h = &hdev->conn_hash; 1201 struct hci_conn *c; 1202 1203 rcu_read_lock(); 1204 1205 list_for_each_entry_rcu(c, &h->list, list) { 1206 if (c->type != LE_LINK) 1207 continue; 1208 1209 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1210 rcu_read_unlock(); 1211 return c; 1212 } 1213 } 1214 1215 rcu_read_unlock(); 1216 1217 return NULL; 1218 } 1219 1220 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev, 1221 bdaddr_t *ba, 1222 __u8 ba_type, 1223 __u8 cig, 1224 __u8 id) 1225 { 1226 struct hci_conn_hash *h = &hdev->conn_hash; 1227 struct hci_conn *c; 1228 1229 rcu_read_lock(); 1230 1231 list_for_each_entry_rcu(c, &h->list, list) { 1232 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY)) 1233 continue; 1234 1235 /* Match CIG ID if set */ 1236 if (cig != c->iso_qos.ucast.cig) 1237 continue; 1238 1239 /* Match CIS ID if set */ 1240 if (id != c->iso_qos.ucast.cis) 1241 continue; 1242 1243 /* Match destination address if set */ 1244 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) { 1245 rcu_read_unlock(); 1246 return c; 1247 } 1248 } 1249 1250 rcu_read_unlock(); 1251 1252 return NULL; 1253 } 1254 1255 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev, 1256 __u8 handle) 1257 { 1258 struct hci_conn_hash *h = &hdev->conn_hash; 1259 struct hci_conn *c; 1260 1261 rcu_read_lock(); 1262 1263 list_for_each_entry_rcu(c, &h->list, list) { 1264 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY)) 1265 continue; 1266 1267 if (handle == c->iso_qos.ucast.cig) { 1268 rcu_read_unlock(); 1269 return c; 1270 } 1271 } 1272 1273 rcu_read_unlock(); 1274 1275 return NULL; 1276 } 1277 1278 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev, 1279 __u8 handle) 1280 { 1281 struct hci_conn_hash *h = &hdev->conn_hash; 1282 struct hci_conn *c; 1283 1284 rcu_read_lock(); 1285 1286 list_for_each_entry_rcu(c, &h->list, list) { 1287 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK) 1288 continue; 1289 1290 if (handle == c->iso_qos.bcast.big) { 1291 rcu_read_unlock(); 1292 return c; 1293 } 1294 } 1295 1296 rcu_read_unlock(); 1297 1298 return NULL; 1299 } 1300 1301 static inline struct hci_conn *hci_conn_hash_lookup_big_any_dst(struct hci_dev *hdev, 1302 __u8 handle) 1303 { 1304 struct hci_conn_hash *h = &hdev->conn_hash; 1305 struct hci_conn *c; 1306 1307 rcu_read_lock(); 1308 1309 list_for_each_entry_rcu(c, &h->list, list) { 1310 if (c->type != ISO_LINK) 1311 continue; 1312 1313 if (handle != BT_ISO_QOS_BIG_UNSET && handle == c->iso_qos.bcast.big) { 1314 rcu_read_unlock(); 1315 return c; 1316 } 1317 } 1318 1319 rcu_read_unlock(); 1320 1321 return NULL; 1322 } 1323 1324 static inline struct hci_conn * 1325 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big) 1326 { 1327 struct hci_conn_hash *h = &hdev->conn_hash; 1328 struct hci_conn *c; 1329 1330 rcu_read_lock(); 1331 1332 list_for_each_entry_rcu(c, &h->list, list) { 1333 if (c->type != ISO_LINK || 1334 !test_bit(HCI_CONN_PA_SYNC, &c->flags)) 1335 continue; 1336 1337 if (c->iso_qos.bcast.big == big) { 1338 rcu_read_unlock(); 1339 return c; 1340 } 1341 } 1342 rcu_read_unlock(); 1343 1344 return NULL; 1345 } 1346 1347 static inline struct hci_conn * 1348 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle) 1349 { 1350 struct hci_conn_hash *h = &hdev->conn_hash; 1351 struct hci_conn *c; 1352 1353 rcu_read_lock(); 1354 1355 list_for_each_entry_rcu(c, &h->list, list) { 1356 if (c->type != ISO_LINK || 1357 !test_bit(HCI_CONN_PA_SYNC, &c->flags)) 1358 continue; 1359 1360 if (c->sync_handle == sync_handle) { 1361 rcu_read_unlock(); 1362 return c; 1363 } 1364 } 1365 rcu_read_unlock(); 1366 1367 return NULL; 1368 } 1369 1370 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 1371 __u8 type, __u16 state) 1372 { 1373 struct hci_conn_hash *h = &hdev->conn_hash; 1374 struct hci_conn *c; 1375 1376 rcu_read_lock(); 1377 1378 list_for_each_entry_rcu(c, &h->list, list) { 1379 if (c->type == type && c->state == state) { 1380 rcu_read_unlock(); 1381 return c; 1382 } 1383 } 1384 1385 rcu_read_unlock(); 1386 1387 return NULL; 1388 } 1389 1390 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data); 1391 static inline void hci_conn_hash_list_state(struct hci_dev *hdev, 1392 hci_conn_func_t func, __u8 type, 1393 __u16 state, void *data) 1394 { 1395 struct hci_conn_hash *h = &hdev->conn_hash; 1396 struct hci_conn *c; 1397 1398 if (!func) 1399 return; 1400 1401 rcu_read_lock(); 1402 1403 list_for_each_entry_rcu(c, &h->list, list) { 1404 if (c->type == type && c->state == state) 1405 func(c, data); 1406 } 1407 1408 rcu_read_unlock(); 1409 } 1410 1411 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 1412 { 1413 struct hci_conn_hash *h = &hdev->conn_hash; 1414 struct hci_conn *c; 1415 1416 rcu_read_lock(); 1417 1418 list_for_each_entry_rcu(c, &h->list, list) { 1419 if (c->type == LE_LINK && c->state == BT_CONNECT && 1420 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 1421 rcu_read_unlock(); 1422 return c; 1423 } 1424 } 1425 1426 rcu_read_unlock(); 1427 1428 return NULL; 1429 } 1430 1431 /* Returns true if an le connection is in the scanning state */ 1432 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev) 1433 { 1434 struct hci_conn_hash *h = &hdev->conn_hash; 1435 struct hci_conn *c; 1436 1437 rcu_read_lock(); 1438 1439 list_for_each_entry_rcu(c, &h->list, list) { 1440 if (c->type == LE_LINK && c->state == BT_CONNECT && 1441 test_bit(HCI_CONN_SCANNING, &c->flags)) { 1442 rcu_read_unlock(); 1443 return true; 1444 } 1445 } 1446 1447 rcu_read_unlock(); 1448 1449 return false; 1450 } 1451 1452 int hci_disconnect(struct hci_conn *conn, __u8 reason); 1453 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 1454 void hci_sco_setup(struct hci_conn *conn, __u8 status); 1455 bool hci_iso_setup_path(struct hci_conn *conn); 1456 int hci_le_create_cis_pending(struct hci_dev *hdev); 1457 int hci_conn_check_create_cis(struct hci_conn *conn); 1458 1459 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 1460 u8 role, u16 handle); 1461 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type, 1462 bdaddr_t *dst, u8 role); 1463 void hci_conn_del(struct hci_conn *conn); 1464 void hci_conn_hash_flush(struct hci_dev *hdev); 1465 void hci_conn_check_pending(struct hci_dev *hdev); 1466 1467 struct hci_chan *hci_chan_create(struct hci_conn *conn); 1468 void hci_chan_del(struct hci_chan *chan); 1469 void hci_chan_list_flush(struct hci_conn *conn); 1470 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 1471 1472 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 1473 u8 dst_type, u8 sec_level, 1474 u16 conn_timeout, 1475 enum conn_reasons conn_reason); 1476 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 1477 u8 dst_type, bool dst_resolved, u8 sec_level, 1478 u16 conn_timeout, u8 role); 1479 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 1480 u8 sec_level, u8 auth_type, 1481 enum conn_reasons conn_reason); 1482 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 1483 __u16 setting, struct bt_codec *codec); 1484 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, 1485 __u8 dst_type, struct bt_iso_qos *qos); 1486 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst, 1487 struct bt_iso_qos *qos, 1488 __u8 base_len, __u8 *base); 1489 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, 1490 __u8 dst_type, struct bt_iso_qos *qos); 1491 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, 1492 __u8 dst_type, struct bt_iso_qos *qos, 1493 __u8 data_len, __u8 *data); 1494 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, 1495 __u8 sid, struct bt_iso_qos *qos); 1496 int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon, 1497 struct bt_iso_qos *qos, 1498 __u16 sync_handle, __u8 num_bis, __u8 bis[]); 1499 int hci_conn_check_link_mode(struct hci_conn *conn); 1500 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 1501 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 1502 bool initiator); 1503 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 1504 1505 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 1506 1507 void hci_conn_failed(struct hci_conn *conn, u8 status); 1508 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle); 1509 1510 /* 1511 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 1512 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 1513 * working or anything else. They just guarantee that the object is available 1514 * and can be dereferenced. So you can use its locks, local variables and any 1515 * other constant data. 1516 * Before accessing runtime data, you _must_ lock the object and then check that 1517 * it is still running. As soon as you release the locks, the connection might 1518 * get dropped, though. 1519 * 1520 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 1521 * how long the underlying connection is held. So every channel that runs on the 1522 * hci_conn object calls this to prevent the connection from disappearing. As 1523 * long as you hold a device, you must also guarantee that you have a valid 1524 * reference to the device via hci_conn_get() (or the initial reference from 1525 * hci_conn_add()). 1526 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 1527 * break because nobody cares for that. But this means, we cannot use 1528 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 1529 */ 1530 1531 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 1532 { 1533 get_device(&conn->dev); 1534 return conn; 1535 } 1536 1537 static inline void hci_conn_put(struct hci_conn *conn) 1538 { 1539 put_device(&conn->dev); 1540 } 1541 1542 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn) 1543 { 1544 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1545 1546 atomic_inc(&conn->refcnt); 1547 cancel_delayed_work(&conn->disc_work); 1548 1549 return conn; 1550 } 1551 1552 static inline void hci_conn_drop(struct hci_conn *conn) 1553 { 1554 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1555 1556 if (atomic_dec_and_test(&conn->refcnt)) { 1557 unsigned long timeo; 1558 1559 switch (conn->type) { 1560 case ACL_LINK: 1561 case LE_LINK: 1562 cancel_delayed_work(&conn->idle_work); 1563 if (conn->state == BT_CONNECTED) { 1564 timeo = conn->disc_timeout; 1565 if (!conn->out) 1566 timeo *= 2; 1567 } else { 1568 timeo = 0; 1569 } 1570 break; 1571 1572 case AMP_LINK: 1573 timeo = conn->disc_timeout; 1574 break; 1575 1576 default: 1577 timeo = 0; 1578 break; 1579 } 1580 1581 cancel_delayed_work(&conn->disc_work); 1582 queue_delayed_work(conn->hdev->workqueue, 1583 &conn->disc_work, timeo); 1584 } 1585 } 1586 1587 /* ----- HCI Devices ----- */ 1588 static inline void hci_dev_put(struct hci_dev *d) 1589 { 1590 BT_DBG("%s orig refcnt %d", d->name, 1591 kref_read(&d->dev.kobj.kref)); 1592 1593 put_device(&d->dev); 1594 } 1595 1596 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1597 { 1598 BT_DBG("%s orig refcnt %d", d->name, 1599 kref_read(&d->dev.kobj.kref)); 1600 1601 get_device(&d->dev); 1602 return d; 1603 } 1604 1605 #define hci_dev_lock(d) mutex_lock(&d->lock) 1606 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1607 1608 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1609 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1610 1611 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1612 { 1613 return dev_get_drvdata(&hdev->dev); 1614 } 1615 1616 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1617 { 1618 dev_set_drvdata(&hdev->dev, data); 1619 } 1620 1621 static inline void *hci_get_priv(struct hci_dev *hdev) 1622 { 1623 return (char *)hdev + sizeof(*hdev); 1624 } 1625 1626 struct hci_dev *hci_dev_get(int index); 1627 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1628 1629 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); 1630 1631 static inline struct hci_dev *hci_alloc_dev(void) 1632 { 1633 return hci_alloc_dev_priv(0); 1634 } 1635 1636 void hci_free_dev(struct hci_dev *hdev); 1637 int hci_register_dev(struct hci_dev *hdev); 1638 void hci_unregister_dev(struct hci_dev *hdev); 1639 void hci_release_dev(struct hci_dev *hdev); 1640 int hci_register_suspend_notifier(struct hci_dev *hdev); 1641 int hci_unregister_suspend_notifier(struct hci_dev *hdev); 1642 int hci_suspend_dev(struct hci_dev *hdev); 1643 int hci_resume_dev(struct hci_dev *hdev); 1644 int hci_reset_dev(struct hci_dev *hdev); 1645 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1646 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1647 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1648 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1649 1650 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) 1651 { 1652 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 1653 hdev->msft_opcode = opcode; 1654 #endif 1655 } 1656 1657 static inline void hci_set_aosp_capable(struct hci_dev *hdev) 1658 { 1659 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 1660 hdev->aosp_capable = true; 1661 #endif 1662 } 1663 1664 static inline void hci_devcd_setup(struct hci_dev *hdev) 1665 { 1666 #ifdef CONFIG_DEV_COREDUMP 1667 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx); 1668 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout); 1669 skb_queue_head_init(&hdev->dump.dump_q); 1670 #endif 1671 } 1672 1673 int hci_dev_open(__u16 dev); 1674 int hci_dev_close(__u16 dev); 1675 int hci_dev_do_close(struct hci_dev *hdev); 1676 int hci_dev_reset(__u16 dev); 1677 int hci_dev_reset_stat(__u16 dev); 1678 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1679 int hci_get_dev_list(void __user *arg); 1680 int hci_get_dev_info(void __user *arg); 1681 int hci_get_conn_list(void __user *arg); 1682 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1683 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1684 int hci_inquiry(void __user *arg); 1685 1686 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1687 bdaddr_t *bdaddr, u8 type); 1688 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1689 struct list_head *list, bdaddr_t *bdaddr, 1690 u8 type); 1691 struct bdaddr_list_with_flags * 1692 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1693 u8 type); 1694 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1695 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1696 u8 type, u8 *peer_irk, u8 *local_irk); 1697 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1698 u8 type, u32 flags); 1699 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1700 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1701 u8 type); 1702 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1703 u8 type); 1704 void hci_bdaddr_list_clear(struct list_head *list); 1705 1706 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1707 bdaddr_t *addr, u8 addr_type); 1708 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1709 bdaddr_t *addr, u8 addr_type); 1710 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1711 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1712 void hci_conn_params_free(struct hci_conn_params *param); 1713 1714 void hci_pend_le_list_del_init(struct hci_conn_params *param); 1715 void hci_pend_le_list_add(struct hci_conn_params *param, 1716 struct list_head *list); 1717 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1718 bdaddr_t *addr, 1719 u8 addr_type); 1720 1721 void hci_uuids_clear(struct hci_dev *hdev); 1722 1723 void hci_link_keys_clear(struct hci_dev *hdev); 1724 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1725 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1726 bdaddr_t *bdaddr, u8 *val, u8 type, 1727 u8 pin_len, bool *persistent); 1728 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1729 u8 addr_type, u8 type, u8 authenticated, 1730 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1731 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1732 u8 addr_type, u8 role); 1733 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1734 void hci_smp_ltks_clear(struct hci_dev *hdev); 1735 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1736 1737 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1738 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1739 u8 addr_type); 1740 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1741 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1742 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1743 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]); 1744 void hci_blocked_keys_clear(struct hci_dev *hdev); 1745 void hci_smp_irks_clear(struct hci_dev *hdev); 1746 1747 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1748 1749 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1750 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1751 bdaddr_t *bdaddr, u8 bdaddr_type); 1752 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1753 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1754 u8 *hash256, u8 *rand256); 1755 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1756 u8 bdaddr_type); 1757 1758 void hci_adv_instances_clear(struct hci_dev *hdev); 1759 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1760 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1761 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, 1762 u32 flags, u16 adv_data_len, u8 *adv_data, 1763 u16 scan_rsp_len, u8 *scan_rsp_data, 1764 u16 timeout, u16 duration, s8 tx_power, 1765 u32 min_interval, u32 max_interval, 1766 u8 mesh_handle); 1767 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, 1768 u32 flags, u8 data_len, u8 *data, 1769 u32 min_interval, u32 max_interval); 1770 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, 1771 u16 adv_data_len, u8 *adv_data, 1772 u16 scan_rsp_len, u8 *scan_rsp_data); 1773 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1774 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1775 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance); 1776 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); 1777 1778 void hci_adv_monitors_clear(struct hci_dev *hdev); 1779 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1780 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1781 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); 1782 int hci_remove_all_adv_monitor(struct hci_dev *hdev); 1783 bool hci_is_adv_monitoring(struct hci_dev *hdev); 1784 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); 1785 1786 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1787 1788 void hci_init_sysfs(struct hci_dev *hdev); 1789 void hci_conn_init_sysfs(struct hci_conn *conn); 1790 void hci_conn_add_sysfs(struct hci_conn *conn); 1791 void hci_conn_del_sysfs(struct hci_conn *conn); 1792 1793 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1794 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent) 1795 1796 /* ----- LMP capabilities ----- */ 1797 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1798 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1799 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1800 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1801 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1802 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1803 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1804 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1805 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1806 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1807 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1808 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M) 1809 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1810 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1811 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1812 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1813 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1814 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1815 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1816 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1817 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1818 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1819 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1820 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1821 1822 /* ----- Extended LMP capabilities ----- */ 1823 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL) 1824 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL) 1825 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1826 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1827 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1828 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1829 1830 /* ----- Host capabilities ----- */ 1831 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1832 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1833 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1834 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1835 1836 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1837 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1838 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1839 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1840 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ 1841 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) 1842 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ 1843 !adv->rpa_expired) 1844 1845 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1846 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1847 1848 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M)) 1849 1850 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1851 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1852 1853 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \ 1854 !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \ 1855 &(dev)->quirks)) 1856 1857 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1858 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1859 1860 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY) 1861 1862 /* Use LL Privacy based address resolution if supported */ 1863 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \ 1864 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY)) 1865 1866 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \ 1867 (hdev->commands[39] & 0x04)) 1868 1869 #define read_key_size_capable(dev) \ 1870 ((dev)->commands[20] & 0x10 && \ 1871 !test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks)) 1872 1873 /* Use enhanced synchronous connection if command is supported and its quirk 1874 * has not been set. 1875 */ 1876 #define enhanced_sync_conn_capable(dev) \ 1877 (((dev)->commands[29] & 0x08) && \ 1878 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks)) 1879 1880 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1881 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1882 ((dev)->commands[37] & 0x40) && \ 1883 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks)) 1884 1885 /* Use ext create connection if command is supported */ 1886 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1887 1888 /* Extended advertising support */ 1889 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1890 1891 /* Maximum advertising length */ 1892 #define max_adv_len(dev) \ 1893 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH) 1894 1895 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789: 1896 * 1897 * C24: Mandatory if the LE Controller supports Connection State and either 1898 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported 1899 */ 1900 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \ 1901 ext_adv_capable(dev)) 1902 1903 /* Periodic advertising support */ 1904 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV)) 1905 1906 /* CIS Master/Slave and BIS support */ 1907 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev)) 1908 #define cis_capable(dev) \ 1909 (cis_central_capable(dev) || cis_peripheral_capable(dev)) 1910 #define cis_central_capable(dev) \ 1911 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL) 1912 #define cis_peripheral_capable(dev) \ 1913 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) 1914 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) 1915 #define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER) 1916 1917 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \ 1918 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks))) 1919 1920 /* ----- HCI protocols ----- */ 1921 #define HCI_PROTO_DEFER 0x01 1922 1923 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1924 __u8 type, __u8 *flags) 1925 { 1926 switch (type) { 1927 case ACL_LINK: 1928 return l2cap_connect_ind(hdev, bdaddr); 1929 1930 case SCO_LINK: 1931 case ESCO_LINK: 1932 return sco_connect_ind(hdev, bdaddr, flags); 1933 1934 case ISO_LINK: 1935 return iso_connect_ind(hdev, bdaddr, flags); 1936 1937 default: 1938 BT_ERR("unknown link type %d", type); 1939 return -EINVAL; 1940 } 1941 } 1942 1943 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1944 { 1945 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1946 return HCI_ERROR_REMOTE_USER_TERM; 1947 1948 return l2cap_disconn_ind(conn); 1949 } 1950 1951 /* ----- HCI callbacks ----- */ 1952 struct hci_cb { 1953 struct list_head list; 1954 1955 char *name; 1956 1957 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1958 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1959 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1960 __u8 encrypt); 1961 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1962 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1963 }; 1964 1965 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1966 { 1967 struct hci_cb *cb; 1968 1969 mutex_lock(&hci_cb_list_lock); 1970 list_for_each_entry(cb, &hci_cb_list, list) { 1971 if (cb->connect_cfm) 1972 cb->connect_cfm(conn, status); 1973 } 1974 mutex_unlock(&hci_cb_list_lock); 1975 1976 if (conn->connect_cfm_cb) 1977 conn->connect_cfm_cb(conn, status); 1978 } 1979 1980 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1981 { 1982 struct hci_cb *cb; 1983 1984 mutex_lock(&hci_cb_list_lock); 1985 list_for_each_entry(cb, &hci_cb_list, list) { 1986 if (cb->disconn_cfm) 1987 cb->disconn_cfm(conn, reason); 1988 } 1989 mutex_unlock(&hci_cb_list_lock); 1990 1991 if (conn->disconn_cfm_cb) 1992 conn->disconn_cfm_cb(conn, reason); 1993 } 1994 1995 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1996 { 1997 struct hci_cb *cb; 1998 __u8 encrypt; 1999 2000 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 2001 return; 2002 2003 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 2004 2005 mutex_lock(&hci_cb_list_lock); 2006 list_for_each_entry(cb, &hci_cb_list, list) { 2007 if (cb->security_cfm) 2008 cb->security_cfm(conn, status, encrypt); 2009 } 2010 mutex_unlock(&hci_cb_list_lock); 2011 2012 if (conn->security_cfm_cb) 2013 conn->security_cfm_cb(conn, status); 2014 } 2015 2016 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status) 2017 { 2018 struct hci_cb *cb; 2019 __u8 encrypt; 2020 2021 if (conn->state == BT_CONFIG) { 2022 if (!status) 2023 conn->state = BT_CONNECTED; 2024 2025 hci_connect_cfm(conn, status); 2026 hci_conn_drop(conn); 2027 return; 2028 } 2029 2030 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) 2031 encrypt = 0x00; 2032 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) 2033 encrypt = 0x02; 2034 else 2035 encrypt = 0x01; 2036 2037 if (!status) { 2038 if (conn->sec_level == BT_SECURITY_SDP) 2039 conn->sec_level = BT_SECURITY_LOW; 2040 2041 if (conn->pending_sec_level > conn->sec_level) 2042 conn->sec_level = conn->pending_sec_level; 2043 } 2044 2045 mutex_lock(&hci_cb_list_lock); 2046 list_for_each_entry(cb, &hci_cb_list, list) { 2047 if (cb->security_cfm) 2048 cb->security_cfm(conn, status, encrypt); 2049 } 2050 mutex_unlock(&hci_cb_list_lock); 2051 2052 if (conn->security_cfm_cb) 2053 conn->security_cfm_cb(conn, status); 2054 } 2055 2056 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 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->key_change_cfm) 2063 cb->key_change_cfm(conn, status); 2064 } 2065 mutex_unlock(&hci_cb_list_lock); 2066 } 2067 2068 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 2069 __u8 role) 2070 { 2071 struct hci_cb *cb; 2072 2073 mutex_lock(&hci_cb_list_lock); 2074 list_for_each_entry(cb, &hci_cb_list, list) { 2075 if (cb->role_switch_cfm) 2076 cb->role_switch_cfm(conn, status, role); 2077 } 2078 mutex_unlock(&hci_cb_list_lock); 2079 } 2080 2081 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 2082 { 2083 if (addr_type != ADDR_LE_DEV_RANDOM) 2084 return false; 2085 2086 if ((bdaddr->b[5] & 0xc0) == 0x40) 2087 return true; 2088 2089 return false; 2090 } 2091 2092 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 2093 { 2094 if (addr_type == ADDR_LE_DEV_PUBLIC) 2095 return true; 2096 2097 /* Check for Random Static address type */ 2098 if ((addr->b[5] & 0xc0) == 0xc0) 2099 return true; 2100 2101 return false; 2102 } 2103 2104 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 2105 bdaddr_t *bdaddr, u8 addr_type) 2106 { 2107 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 2108 return NULL; 2109 2110 return hci_find_irk_by_rpa(hdev, bdaddr); 2111 } 2112 2113 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 2114 u16 to_multiplier) 2115 { 2116 u16 max_latency; 2117 2118 if (min > max || min < 6 || max > 3200) 2119 return -EINVAL; 2120 2121 if (to_multiplier < 10 || to_multiplier > 3200) 2122 return -EINVAL; 2123 2124 if (max >= to_multiplier * 8) 2125 return -EINVAL; 2126 2127 max_latency = (to_multiplier * 4 / max) - 1; 2128 if (latency > 499 || latency > max_latency) 2129 return -EINVAL; 2130 2131 return 0; 2132 } 2133 2134 int hci_register_cb(struct hci_cb *hcb); 2135 int hci_unregister_cb(struct hci_cb *hcb); 2136 2137 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 2138 const void *param); 2139 2140 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 2141 const void *param); 2142 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 2143 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 2144 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); 2145 2146 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 2147 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); 2148 2149 u32 hci_conn_get_phy(struct hci_conn *conn); 2150 2151 /* ----- HCI Sockets ----- */ 2152 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 2153 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 2154 int flag, struct sock *skip_sk); 2155 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 2156 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 2157 void *data, u16 data_len, ktime_t tstamp, 2158 int flag, struct sock *skip_sk); 2159 2160 void hci_sock_dev_event(struct hci_dev *hdev, int event); 2161 2162 #define HCI_MGMT_VAR_LEN BIT(0) 2163 #define HCI_MGMT_NO_HDEV BIT(1) 2164 #define HCI_MGMT_UNTRUSTED BIT(2) 2165 #define HCI_MGMT_UNCONFIGURED BIT(3) 2166 #define HCI_MGMT_HDEV_OPTIONAL BIT(4) 2167 2168 struct hci_mgmt_handler { 2169 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 2170 u16 data_len); 2171 size_t data_len; 2172 unsigned long flags; 2173 }; 2174 2175 struct hci_mgmt_chan { 2176 struct list_head list; 2177 unsigned short channel; 2178 size_t handler_count; 2179 const struct hci_mgmt_handler *handlers; 2180 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 2181 }; 2182 2183 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 2184 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 2185 2186 /* Management interface */ 2187 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 2188 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 2189 BIT(BDADDR_LE_RANDOM)) 2190 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 2191 BIT(BDADDR_LE_PUBLIC) | \ 2192 BIT(BDADDR_LE_RANDOM)) 2193 2194 /* These LE scan and inquiry parameters were chosen according to LE General 2195 * Discovery Procedure specification. 2196 */ 2197 #define DISCOV_LE_SCAN_WIN 0x12 2198 #define DISCOV_LE_SCAN_INT 0x12 2199 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 2200 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 2201 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 2202 #define DISCOV_BREDR_INQUIRY_LEN 0x08 2203 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 2204 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ 2205 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ 2206 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */ 2207 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */ 2208 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */ 2209 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */ 2210 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10) 2211 2212 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */ 2213 2214 void mgmt_fill_version_info(void *ver); 2215 int mgmt_new_settings(struct hci_dev *hdev); 2216 void mgmt_index_added(struct hci_dev *hdev); 2217 void mgmt_index_removed(struct hci_dev *hdev); 2218 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 2219 void mgmt_power_on(struct hci_dev *hdev, int err); 2220 void __mgmt_power_off(struct hci_dev *hdev); 2221 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 2222 bool persistent); 2223 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 2224 u8 *name, u8 name_len); 2225 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 2226 u8 link_type, u8 addr_type, u8 reason, 2227 bool mgmt_connected); 2228 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 2229 u8 link_type, u8 addr_type, u8 status); 2230 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2231 u8 addr_type, u8 status); 2232 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 2233 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2234 u8 status); 2235 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2236 u8 status); 2237 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2238 u8 link_type, u8 addr_type, u32 value, 2239 u8 confirm_hint); 2240 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2241 u8 link_type, u8 addr_type, u8 status); 2242 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2243 u8 link_type, u8 addr_type, u8 status); 2244 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2245 u8 link_type, u8 addr_type); 2246 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2247 u8 link_type, u8 addr_type, u8 status); 2248 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2249 u8 link_type, u8 addr_type, u8 status); 2250 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 2251 u8 link_type, u8 addr_type, u32 passkey, 2252 u8 entered); 2253 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 2254 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 2255 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 2256 u8 status); 2257 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 2258 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 2259 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 2260 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2261 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 2262 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len, 2263 u64 instant); 2264 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2265 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 2266 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 2267 void mgmt_suspending(struct hci_dev *hdev, u8 state); 2268 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr, 2269 u8 addr_type); 2270 bool mgmt_powering_down(struct hci_dev *hdev); 2271 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 2272 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 2273 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 2274 bool persistent); 2275 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 2276 u8 bdaddr_type, u8 store_hint, u16 min_interval, 2277 u16 max_interval, u16 latency, u16 timeout); 2278 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 2279 bool mgmt_get_connectable(struct hci_dev *hdev); 2280 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 2281 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 2282 u8 instance); 2283 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 2284 u8 instance); 2285 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); 2286 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 2287 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, 2288 bdaddr_t *bdaddr, u8 addr_type); 2289 2290 int hci_abort_conn(struct hci_conn *conn, u8 reason); 2291 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 2292 u16 to_multiplier); 2293 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 2294 __u8 ltk[16], __u8 key_size); 2295 2296 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 2297 u8 *bdaddr_type); 2298 2299 #define SCO_AIRMODE_MASK 0x0003 2300 #define SCO_AIRMODE_CVSD 0x0000 2301 #define SCO_AIRMODE_TRANSP 0x0003 2302 2303 #define LOCAL_CODEC_ACL_MASK BIT(0) 2304 #define LOCAL_CODEC_SCO_MASK BIT(1) 2305 2306 #define TRANSPORT_TYPE_MAX 0x04 2307 2308 #endif /* __HCI_CORE_H */ 2309