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; 556 557 void *smp_data; 558 void *smp_bredr_data; 559 560 struct discovery_state discovery; 561 562 int discovery_old_state; 563 bool discovery_paused; 564 int advertising_old_state; 565 bool advertising_paused; 566 567 struct notifier_block suspend_notifier; 568 enum suspended_state suspend_state_next; 569 enum suspended_state suspend_state; 570 bool scanning_paused; 571 bool suspended; 572 u8 wake_reason; 573 bdaddr_t wake_addr; 574 u8 wake_addr_type; 575 576 struct hci_conn_hash conn_hash; 577 578 struct list_head mesh_pending; 579 struct list_head mgmt_pending; 580 struct list_head reject_list; 581 struct list_head accept_list; 582 struct list_head uuids; 583 struct list_head link_keys; 584 struct list_head long_term_keys; 585 struct list_head identity_resolving_keys; 586 struct list_head remote_oob_data; 587 struct list_head le_accept_list; 588 struct list_head le_resolv_list; 589 struct list_head le_conn_params; 590 struct list_head pend_le_conns; 591 struct list_head pend_le_reports; 592 struct list_head blocked_keys; 593 struct list_head local_codecs; 594 595 struct hci_dev_stats stat; 596 597 atomic_t promisc; 598 599 const char *hw_info; 600 const char *fw_info; 601 struct dentry *debugfs; 602 603 struct hci_devcoredump dump; 604 605 struct device dev; 606 607 struct rfkill *rfkill; 608 609 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 610 hci_conn_flags_t conn_flags; 611 612 __s8 adv_tx_power; 613 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 614 __u8 adv_data_len; 615 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 616 __u8 scan_rsp_data_len; 617 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 618 __u8 per_adv_data_len; 619 620 struct list_head adv_instances; 621 unsigned int adv_instance_cnt; 622 __u8 cur_adv_instance; 623 __u16 adv_instance_timeout; 624 struct delayed_work adv_instance_expire; 625 626 struct idr adv_monitors_idr; 627 unsigned int adv_monitors_cnt; 628 629 __u8 irk[16]; 630 __u32 rpa_timeout; 631 struct delayed_work rpa_expired; 632 bdaddr_t rpa; 633 634 struct delayed_work mesh_send_done; 635 636 enum { 637 INTERLEAVE_SCAN_NONE, 638 INTERLEAVE_SCAN_NO_FILTER, 639 INTERLEAVE_SCAN_ALLOWLIST 640 } interleave_scan_state; 641 642 struct delayed_work interleave_scan; 643 644 struct list_head monitored_devices; 645 bool advmon_pend_notify; 646 647 #if IS_ENABLED(CONFIG_BT_LEDS) 648 struct led_trigger *power_led; 649 #endif 650 651 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 652 __u16 msft_opcode; 653 void *msft_data; 654 bool msft_curve_validity; 655 #endif 656 657 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 658 bool aosp_capable; 659 bool aosp_quality_report; 660 #endif 661 662 int (*open)(struct hci_dev *hdev); 663 int (*close)(struct hci_dev *hdev); 664 int (*flush)(struct hci_dev *hdev); 665 int (*setup)(struct hci_dev *hdev); 666 int (*shutdown)(struct hci_dev *hdev); 667 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 668 void (*notify)(struct hci_dev *hdev, unsigned int evt); 669 void (*hw_error)(struct hci_dev *hdev, u8 code); 670 int (*post_init)(struct hci_dev *hdev); 671 int (*set_diag)(struct hci_dev *hdev, bool enable); 672 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 673 void (*cmd_timeout)(struct hci_dev *hdev); 674 void (*reset)(struct hci_dev *hdev); 675 bool (*wakeup)(struct hci_dev *hdev); 676 int (*set_quality_report)(struct hci_dev *hdev, bool enable); 677 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path); 678 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type, 679 struct bt_codec *codec, __u8 *vnd_len, 680 __u8 **vnd_data); 681 }; 682 683 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 684 685 enum conn_reasons { 686 CONN_REASON_PAIR_DEVICE, 687 CONN_REASON_L2CAP_CHAN, 688 CONN_REASON_SCO_CONNECT, 689 CONN_REASON_ISO_CONNECT, 690 }; 691 692 struct hci_conn { 693 struct list_head list; 694 695 atomic_t refcnt; 696 697 bdaddr_t dst; 698 __u8 dst_type; 699 bdaddr_t src; 700 __u8 src_type; 701 bdaddr_t init_addr; 702 __u8 init_addr_type; 703 bdaddr_t resp_addr; 704 __u8 resp_addr_type; 705 __u8 adv_instance; 706 __u16 handle; 707 __u16 sync_handle; 708 __u16 state; 709 __u8 mode; 710 __u8 type; 711 __u8 role; 712 bool out; 713 __u8 attempt; 714 __u8 dev_class[3]; 715 __u8 features[HCI_MAX_PAGES][8]; 716 __u16 pkt_type; 717 __u16 link_policy; 718 __u8 key_type; 719 __u8 auth_type; 720 __u8 sec_level; 721 __u8 pending_sec_level; 722 __u8 pin_length; 723 __u8 enc_key_size; 724 __u8 io_capability; 725 __u32 passkey_notify; 726 __u8 passkey_entered; 727 __u16 disc_timeout; 728 __u16 conn_timeout; 729 __u16 setting; 730 __u16 auth_payload_timeout; 731 __u16 le_conn_min_interval; 732 __u16 le_conn_max_interval; 733 __u16 le_conn_interval; 734 __u16 le_conn_latency; 735 __u16 le_supv_timeout; 736 __u8 le_adv_data[HCI_MAX_EXT_AD_LENGTH]; 737 __u8 le_adv_data_len; 738 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH]; 739 __u8 le_per_adv_data_len; 740 __u8 le_tx_phy; 741 __u8 le_rx_phy; 742 __s8 rssi; 743 __s8 tx_power; 744 __s8 max_tx_power; 745 struct bt_iso_qos iso_qos; 746 unsigned long flags; 747 748 enum conn_reasons conn_reason; 749 __u8 abort_reason; 750 751 __u32 clock; 752 __u16 clock_accuracy; 753 754 unsigned long conn_info_timestamp; 755 756 __u8 remote_cap; 757 __u8 remote_auth; 758 __u8 remote_id; 759 760 unsigned int sent; 761 762 struct sk_buff_head data_q; 763 struct list_head chan_list; 764 765 struct delayed_work disc_work; 766 struct delayed_work auto_accept_work; 767 struct delayed_work idle_work; 768 struct delayed_work le_conn_timeout; 769 770 struct device dev; 771 struct dentry *debugfs; 772 773 struct hci_dev *hdev; 774 void *l2cap_data; 775 void *sco_data; 776 void *iso_data; 777 struct amp_mgr *amp_mgr; 778 779 struct list_head link_list; 780 struct hci_conn *parent; 781 struct hci_link *link; 782 783 struct bt_codec codec; 784 785 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 786 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 787 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 788 789 void (*cleanup)(struct hci_conn *conn); 790 }; 791 792 struct hci_link { 793 struct list_head list; 794 struct hci_conn *conn; 795 }; 796 797 struct hci_chan { 798 struct list_head list; 799 __u16 handle; 800 struct hci_conn *conn; 801 struct sk_buff_head data_q; 802 unsigned int sent; 803 __u8 state; 804 bool amp; 805 }; 806 807 struct hci_conn_params { 808 struct list_head list; 809 struct list_head action; 810 811 bdaddr_t addr; 812 u8 addr_type; 813 814 u16 conn_min_interval; 815 u16 conn_max_interval; 816 u16 conn_latency; 817 u16 supervision_timeout; 818 819 enum { 820 HCI_AUTO_CONN_DISABLED, 821 HCI_AUTO_CONN_REPORT, 822 HCI_AUTO_CONN_DIRECT, 823 HCI_AUTO_CONN_ALWAYS, 824 HCI_AUTO_CONN_LINK_LOSS, 825 HCI_AUTO_CONN_EXPLICIT, 826 } auto_connect; 827 828 struct hci_conn *conn; 829 bool explicit_connect; 830 /* Accessed without hdev->lock: */ 831 hci_conn_flags_t flags; 832 u8 privacy_mode; 833 }; 834 835 extern struct list_head hci_dev_list; 836 extern struct list_head hci_cb_list; 837 extern rwlock_t hci_dev_list_lock; 838 extern struct mutex hci_cb_list_lock; 839 840 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 841 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 842 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 843 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 844 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 845 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 846 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 847 848 #define hci_dev_clear_volatile_flags(hdev) \ 849 do { \ 850 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 851 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 852 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\ 853 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 854 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \ 855 } while (0) 856 857 #define hci_dev_le_state_simultaneous(hdev) \ 858 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \ 859 (hdev->le_states[4] & 0x08) && /* Central */ \ 860 (hdev->le_states[4] & 0x40) && /* Peripheral */ \ 861 (hdev->le_states[3] & 0x10)) /* Simultaneous */ 862 863 /* ----- HCI interface to upper protocols ----- */ 864 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 865 int l2cap_disconn_ind(struct hci_conn *hcon); 866 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 867 868 #if IS_ENABLED(CONFIG_BT_BREDR) 869 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 870 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 871 #else 872 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 873 __u8 *flags) 874 { 875 return 0; 876 } 877 878 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 879 { 880 } 881 #endif 882 883 #if IS_ENABLED(CONFIG_BT_LE) 884 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 885 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 886 #else 887 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 888 __u8 *flags) 889 { 890 return 0; 891 } 892 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, 893 u16 flags) 894 { 895 } 896 #endif 897 898 /* ----- Inquiry cache ----- */ 899 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 900 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 901 902 static inline void discovery_init(struct hci_dev *hdev) 903 { 904 hdev->discovery.state = DISCOVERY_STOPPED; 905 INIT_LIST_HEAD(&hdev->discovery.all); 906 INIT_LIST_HEAD(&hdev->discovery.unknown); 907 INIT_LIST_HEAD(&hdev->discovery.resolve); 908 hdev->discovery.report_invalid_rssi = true; 909 hdev->discovery.rssi = HCI_RSSI_INVALID; 910 } 911 912 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 913 { 914 hdev->discovery.result_filtering = false; 915 hdev->discovery.report_invalid_rssi = true; 916 hdev->discovery.rssi = HCI_RSSI_INVALID; 917 hdev->discovery.uuid_count = 0; 918 kfree(hdev->discovery.uuids); 919 hdev->discovery.uuids = NULL; 920 hdev->discovery.scan_start = 0; 921 hdev->discovery.scan_duration = 0; 922 } 923 924 bool hci_discovery_active(struct hci_dev *hdev); 925 926 void hci_discovery_set_state(struct hci_dev *hdev, int state); 927 928 static inline int inquiry_cache_empty(struct hci_dev *hdev) 929 { 930 return list_empty(&hdev->discovery.all); 931 } 932 933 static inline long inquiry_cache_age(struct hci_dev *hdev) 934 { 935 struct discovery_state *c = &hdev->discovery; 936 return jiffies - c->timestamp; 937 } 938 939 static inline long inquiry_entry_age(struct inquiry_entry *e) 940 { 941 return jiffies - e->timestamp; 942 } 943 944 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 945 bdaddr_t *bdaddr); 946 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 947 bdaddr_t *bdaddr); 948 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 949 bdaddr_t *bdaddr, 950 int state); 951 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 952 struct inquiry_entry *ie); 953 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 954 bool name_known); 955 void hci_inquiry_cache_flush(struct hci_dev *hdev); 956 957 /* ----- HCI Connections ----- */ 958 enum { 959 HCI_CONN_AUTH_PEND, 960 HCI_CONN_REAUTH_PEND, 961 HCI_CONN_ENCRYPT_PEND, 962 HCI_CONN_RSWITCH_PEND, 963 HCI_CONN_MODE_CHANGE_PEND, 964 HCI_CONN_SCO_SETUP_PEND, 965 HCI_CONN_MGMT_CONNECTED, 966 HCI_CONN_SSP_ENABLED, 967 HCI_CONN_SC_ENABLED, 968 HCI_CONN_AES_CCM, 969 HCI_CONN_POWER_SAVE, 970 HCI_CONN_FLUSH_KEY, 971 HCI_CONN_ENCRYPT, 972 HCI_CONN_AUTH, 973 HCI_CONN_SECURE, 974 HCI_CONN_FIPS, 975 HCI_CONN_STK_ENCRYPT, 976 HCI_CONN_AUTH_INITIATOR, 977 HCI_CONN_DROP, 978 HCI_CONN_CANCEL, 979 HCI_CONN_PARAM_REMOVAL_PEND, 980 HCI_CONN_NEW_LINK_KEY, 981 HCI_CONN_SCANNING, 982 HCI_CONN_AUTH_FAILURE, 983 HCI_CONN_PER_ADV, 984 HCI_CONN_BIG_CREATED, 985 HCI_CONN_CREATE_CIS, 986 HCI_CONN_BIG_SYNC, 987 HCI_CONN_BIG_SYNC_FAILED, 988 HCI_CONN_PA_SYNC, 989 HCI_CONN_PA_SYNC_FAILED, 990 }; 991 992 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 993 { 994 struct hci_dev *hdev = conn->hdev; 995 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 996 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 997 } 998 999 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 1000 { 1001 struct hci_dev *hdev = conn->hdev; 1002 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 1003 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 1004 } 1005 1006 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 1007 { 1008 struct hci_conn_hash *h = &hdev->conn_hash; 1009 list_add_tail_rcu(&c->list, &h->list); 1010 switch (c->type) { 1011 case ACL_LINK: 1012 h->acl_num++; 1013 break; 1014 case AMP_LINK: 1015 h->amp_num++; 1016 break; 1017 case LE_LINK: 1018 h->le_num++; 1019 if (c->role == HCI_ROLE_SLAVE) 1020 h->le_num_peripheral++; 1021 break; 1022 case SCO_LINK: 1023 case ESCO_LINK: 1024 h->sco_num++; 1025 break; 1026 case ISO_LINK: 1027 h->iso_num++; 1028 break; 1029 } 1030 } 1031 1032 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 1033 { 1034 struct hci_conn_hash *h = &hdev->conn_hash; 1035 1036 list_del_rcu(&c->list); 1037 synchronize_rcu(); 1038 1039 switch (c->type) { 1040 case ACL_LINK: 1041 h->acl_num--; 1042 break; 1043 case AMP_LINK: 1044 h->amp_num--; 1045 break; 1046 case LE_LINK: 1047 h->le_num--; 1048 if (c->role == HCI_ROLE_SLAVE) 1049 h->le_num_peripheral--; 1050 break; 1051 case SCO_LINK: 1052 case ESCO_LINK: 1053 h->sco_num--; 1054 break; 1055 case ISO_LINK: 1056 h->iso_num--; 1057 break; 1058 } 1059 } 1060 1061 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 1062 { 1063 struct hci_conn_hash *h = &hdev->conn_hash; 1064 switch (type) { 1065 case ACL_LINK: 1066 return h->acl_num; 1067 case AMP_LINK: 1068 return h->amp_num; 1069 case LE_LINK: 1070 return h->le_num; 1071 case SCO_LINK: 1072 case ESCO_LINK: 1073 return h->sco_num; 1074 case ISO_LINK: 1075 return h->iso_num; 1076 default: 1077 return 0; 1078 } 1079 } 1080 1081 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 1082 { 1083 struct hci_conn_hash *c = &hdev->conn_hash; 1084 1085 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num; 1086 } 1087 1088 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 1089 { 1090 struct hci_conn_hash *h = &hdev->conn_hash; 1091 struct hci_conn *c; 1092 __u8 type = INVALID_LINK; 1093 1094 rcu_read_lock(); 1095 1096 list_for_each_entry_rcu(c, &h->list, list) { 1097 if (c->handle == handle) { 1098 type = c->type; 1099 break; 1100 } 1101 } 1102 1103 rcu_read_unlock(); 1104 1105 return type; 1106 } 1107 1108 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev, 1109 bdaddr_t *ba, __u8 bis) 1110 { 1111 struct hci_conn_hash *h = &hdev->conn_hash; 1112 struct hci_conn *c; 1113 1114 rcu_read_lock(); 1115 1116 list_for_each_entry_rcu(c, &h->list, list) { 1117 if (bacmp(&c->dst, ba) || c->type != ISO_LINK) 1118 continue; 1119 1120 if (c->iso_qos.bcast.bis == bis) { 1121 rcu_read_unlock(); 1122 return c; 1123 } 1124 } 1125 rcu_read_unlock(); 1126 1127 return NULL; 1128 } 1129 1130 static inline struct hci_conn * 1131 hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev, 1132 bdaddr_t *ba, 1133 __u8 big, __u8 bis) 1134 { 1135 struct hci_conn_hash *h = &hdev->conn_hash; 1136 struct hci_conn *c; 1137 1138 rcu_read_lock(); 1139 1140 list_for_each_entry_rcu(c, &h->list, list) { 1141 if (bacmp(&c->dst, ba) || c->type != ISO_LINK || 1142 !test_bit(HCI_CONN_PER_ADV, &c->flags)) 1143 continue; 1144 1145 if (c->iso_qos.bcast.big == big && 1146 c->iso_qos.bcast.bis == bis) { 1147 rcu_read_unlock(); 1148 return c; 1149 } 1150 } 1151 rcu_read_unlock(); 1152 1153 return NULL; 1154 } 1155 1156 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 1157 __u16 handle) 1158 { 1159 struct hci_conn_hash *h = &hdev->conn_hash; 1160 struct hci_conn *c; 1161 1162 rcu_read_lock(); 1163 1164 list_for_each_entry_rcu(c, &h->list, list) { 1165 if (c->handle == handle) { 1166 rcu_read_unlock(); 1167 return c; 1168 } 1169 } 1170 rcu_read_unlock(); 1171 1172 return NULL; 1173 } 1174 1175 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 1176 __u8 type, bdaddr_t *ba) 1177 { 1178 struct hci_conn_hash *h = &hdev->conn_hash; 1179 struct hci_conn *c; 1180 1181 rcu_read_lock(); 1182 1183 list_for_each_entry_rcu(c, &h->list, list) { 1184 if (c->type == type && !bacmp(&c->dst, ba)) { 1185 rcu_read_unlock(); 1186 return c; 1187 } 1188 } 1189 1190 rcu_read_unlock(); 1191 1192 return NULL; 1193 } 1194 1195 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 1196 bdaddr_t *ba, 1197 __u8 ba_type) 1198 { 1199 struct hci_conn_hash *h = &hdev->conn_hash; 1200 struct hci_conn *c; 1201 1202 rcu_read_lock(); 1203 1204 list_for_each_entry_rcu(c, &h->list, list) { 1205 if (c->type != LE_LINK) 1206 continue; 1207 1208 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1209 rcu_read_unlock(); 1210 return c; 1211 } 1212 } 1213 1214 rcu_read_unlock(); 1215 1216 return NULL; 1217 } 1218 1219 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev, 1220 bdaddr_t *ba, 1221 __u8 ba_type, 1222 __u8 cig, 1223 __u8 id) 1224 { 1225 struct hci_conn_hash *h = &hdev->conn_hash; 1226 struct hci_conn *c; 1227 1228 rcu_read_lock(); 1229 1230 list_for_each_entry_rcu(c, &h->list, list) { 1231 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY)) 1232 continue; 1233 1234 /* Match CIG ID if set */ 1235 if (cig != c->iso_qos.ucast.cig) 1236 continue; 1237 1238 /* Match CIS ID if set */ 1239 if (id != c->iso_qos.ucast.cis) 1240 continue; 1241 1242 /* Match destination address if set */ 1243 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) { 1244 rcu_read_unlock(); 1245 return c; 1246 } 1247 } 1248 1249 rcu_read_unlock(); 1250 1251 return NULL; 1252 } 1253 1254 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev, 1255 __u8 handle) 1256 { 1257 struct hci_conn_hash *h = &hdev->conn_hash; 1258 struct hci_conn *c; 1259 1260 rcu_read_lock(); 1261 1262 list_for_each_entry_rcu(c, &h->list, list) { 1263 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY)) 1264 continue; 1265 1266 if (handle == c->iso_qos.ucast.cig) { 1267 rcu_read_unlock(); 1268 return c; 1269 } 1270 } 1271 1272 rcu_read_unlock(); 1273 1274 return NULL; 1275 } 1276 1277 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev, 1278 __u8 handle) 1279 { 1280 struct hci_conn_hash *h = &hdev->conn_hash; 1281 struct hci_conn *c; 1282 1283 rcu_read_lock(); 1284 1285 list_for_each_entry_rcu(c, &h->list, list) { 1286 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK) 1287 continue; 1288 1289 if (handle == c->iso_qos.bcast.big) { 1290 rcu_read_unlock(); 1291 return c; 1292 } 1293 } 1294 1295 rcu_read_unlock(); 1296 1297 return NULL; 1298 } 1299 1300 static inline struct hci_conn * 1301 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big) 1302 { 1303 struct hci_conn_hash *h = &hdev->conn_hash; 1304 struct hci_conn *c; 1305 1306 rcu_read_lock(); 1307 1308 list_for_each_entry_rcu(c, &h->list, list) { 1309 if (c->type != ISO_LINK || 1310 !test_bit(HCI_CONN_PA_SYNC, &c->flags)) 1311 continue; 1312 1313 if (c->iso_qos.bcast.big == big) { 1314 rcu_read_unlock(); 1315 return c; 1316 } 1317 } 1318 rcu_read_unlock(); 1319 1320 return NULL; 1321 } 1322 1323 static inline struct hci_conn * 1324 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle) 1325 { 1326 struct hci_conn_hash *h = &hdev->conn_hash; 1327 struct hci_conn *c; 1328 1329 rcu_read_lock(); 1330 1331 list_for_each_entry_rcu(c, &h->list, list) { 1332 if (c->type != ISO_LINK || 1333 !test_bit(HCI_CONN_PA_SYNC, &c->flags)) 1334 continue; 1335 1336 if (c->sync_handle == sync_handle) { 1337 rcu_read_unlock(); 1338 return c; 1339 } 1340 } 1341 rcu_read_unlock(); 1342 1343 return NULL; 1344 } 1345 1346 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 1347 __u8 type, __u16 state) 1348 { 1349 struct hci_conn_hash *h = &hdev->conn_hash; 1350 struct hci_conn *c; 1351 1352 rcu_read_lock(); 1353 1354 list_for_each_entry_rcu(c, &h->list, list) { 1355 if (c->type == type && c->state == state) { 1356 rcu_read_unlock(); 1357 return c; 1358 } 1359 } 1360 1361 rcu_read_unlock(); 1362 1363 return NULL; 1364 } 1365 1366 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data); 1367 static inline void hci_conn_hash_list_state(struct hci_dev *hdev, 1368 hci_conn_func_t func, __u8 type, 1369 __u16 state, void *data) 1370 { 1371 struct hci_conn_hash *h = &hdev->conn_hash; 1372 struct hci_conn *c; 1373 1374 if (!func) 1375 return; 1376 1377 rcu_read_lock(); 1378 1379 list_for_each_entry_rcu(c, &h->list, list) { 1380 if (c->type == type && c->state == state) 1381 func(c, data); 1382 } 1383 1384 rcu_read_unlock(); 1385 } 1386 1387 static inline void hci_conn_hash_list_flag(struct hci_dev *hdev, 1388 hci_conn_func_t func, __u8 type, 1389 __u8 flag, void *data) 1390 { 1391 struct hci_conn_hash *h = &hdev->conn_hash; 1392 struct hci_conn *c; 1393 1394 if (!func) 1395 return; 1396 1397 rcu_read_lock(); 1398 1399 list_for_each_entry_rcu(c, &h->list, list) { 1400 if (c->type == type && test_bit(flag, &c->flags)) 1401 func(c, data); 1402 } 1403 1404 rcu_read_unlock(); 1405 } 1406 1407 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 1408 { 1409 struct hci_conn_hash *h = &hdev->conn_hash; 1410 struct hci_conn *c; 1411 1412 rcu_read_lock(); 1413 1414 list_for_each_entry_rcu(c, &h->list, list) { 1415 if (c->type == LE_LINK && c->state == BT_CONNECT && 1416 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 1417 rcu_read_unlock(); 1418 return c; 1419 } 1420 } 1421 1422 rcu_read_unlock(); 1423 1424 return NULL; 1425 } 1426 1427 /* Returns true if an le connection is in the scanning state */ 1428 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev) 1429 { 1430 struct hci_conn_hash *h = &hdev->conn_hash; 1431 struct hci_conn *c; 1432 1433 rcu_read_lock(); 1434 1435 list_for_each_entry_rcu(c, &h->list, list) { 1436 if (c->type == LE_LINK && c->state == BT_CONNECT && 1437 test_bit(HCI_CONN_SCANNING, &c->flags)) { 1438 rcu_read_unlock(); 1439 return true; 1440 } 1441 } 1442 1443 rcu_read_unlock(); 1444 1445 return false; 1446 } 1447 1448 int hci_disconnect(struct hci_conn *conn, __u8 reason); 1449 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 1450 void hci_sco_setup(struct hci_conn *conn, __u8 status); 1451 bool hci_iso_setup_path(struct hci_conn *conn); 1452 int hci_le_create_cis_pending(struct hci_dev *hdev); 1453 int hci_conn_check_create_cis(struct hci_conn *conn); 1454 1455 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 1456 u8 role, u16 handle); 1457 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type, 1458 bdaddr_t *dst, u8 role); 1459 void hci_conn_del(struct hci_conn *conn); 1460 void hci_conn_hash_flush(struct hci_dev *hdev); 1461 void hci_conn_check_pending(struct hci_dev *hdev); 1462 1463 struct hci_chan *hci_chan_create(struct hci_conn *conn); 1464 void hci_chan_del(struct hci_chan *chan); 1465 void hci_chan_list_flush(struct hci_conn *conn); 1466 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 1467 1468 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 1469 u8 dst_type, u8 sec_level, 1470 u16 conn_timeout, 1471 enum conn_reasons conn_reason); 1472 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 1473 u8 dst_type, bool dst_resolved, u8 sec_level, 1474 u16 conn_timeout, u8 role); 1475 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 1476 u8 sec_level, u8 auth_type, 1477 enum conn_reasons conn_reason); 1478 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 1479 __u16 setting, struct bt_codec *codec); 1480 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, 1481 __u8 dst_type, struct bt_iso_qos *qos); 1482 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst, 1483 struct bt_iso_qos *qos, 1484 __u8 base_len, __u8 *base); 1485 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, 1486 __u8 dst_type, struct bt_iso_qos *qos); 1487 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, 1488 __u8 dst_type, struct bt_iso_qos *qos, 1489 __u8 data_len, __u8 *data); 1490 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, 1491 __u8 sid, struct bt_iso_qos *qos); 1492 int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon, 1493 struct bt_iso_qos *qos, 1494 __u16 sync_handle, __u8 num_bis, __u8 bis[]); 1495 int hci_conn_check_link_mode(struct hci_conn *conn); 1496 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 1497 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 1498 bool initiator); 1499 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 1500 1501 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 1502 1503 void hci_conn_failed(struct hci_conn *conn, u8 status); 1504 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle); 1505 1506 /* 1507 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 1508 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 1509 * working or anything else. They just guarantee that the object is available 1510 * and can be dereferenced. So you can use its locks, local variables and any 1511 * other constant data. 1512 * Before accessing runtime data, you _must_ lock the object and then check that 1513 * it is still running. As soon as you release the locks, the connection might 1514 * get dropped, though. 1515 * 1516 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 1517 * how long the underlying connection is held. So every channel that runs on the 1518 * hci_conn object calls this to prevent the connection from disappearing. As 1519 * long as you hold a device, you must also guarantee that you have a valid 1520 * reference to the device via hci_conn_get() (or the initial reference from 1521 * hci_conn_add()). 1522 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 1523 * break because nobody cares for that. But this means, we cannot use 1524 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 1525 */ 1526 1527 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 1528 { 1529 get_device(&conn->dev); 1530 return conn; 1531 } 1532 1533 static inline void hci_conn_put(struct hci_conn *conn) 1534 { 1535 put_device(&conn->dev); 1536 } 1537 1538 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn) 1539 { 1540 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1541 1542 atomic_inc(&conn->refcnt); 1543 cancel_delayed_work(&conn->disc_work); 1544 1545 return conn; 1546 } 1547 1548 static inline void hci_conn_drop(struct hci_conn *conn) 1549 { 1550 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1551 1552 if (atomic_dec_and_test(&conn->refcnt)) { 1553 unsigned long timeo; 1554 1555 switch (conn->type) { 1556 case ACL_LINK: 1557 case LE_LINK: 1558 cancel_delayed_work(&conn->idle_work); 1559 if (conn->state == BT_CONNECTED) { 1560 timeo = conn->disc_timeout; 1561 if (!conn->out) 1562 timeo *= 2; 1563 } else { 1564 timeo = 0; 1565 } 1566 break; 1567 1568 case AMP_LINK: 1569 timeo = conn->disc_timeout; 1570 break; 1571 1572 default: 1573 timeo = 0; 1574 break; 1575 } 1576 1577 cancel_delayed_work(&conn->disc_work); 1578 queue_delayed_work(conn->hdev->workqueue, 1579 &conn->disc_work, timeo); 1580 } 1581 } 1582 1583 /* ----- HCI Devices ----- */ 1584 static inline void hci_dev_put(struct hci_dev *d) 1585 { 1586 BT_DBG("%s orig refcnt %d", d->name, 1587 kref_read(&d->dev.kobj.kref)); 1588 1589 put_device(&d->dev); 1590 } 1591 1592 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1593 { 1594 BT_DBG("%s orig refcnt %d", d->name, 1595 kref_read(&d->dev.kobj.kref)); 1596 1597 get_device(&d->dev); 1598 return d; 1599 } 1600 1601 #define hci_dev_lock(d) mutex_lock(&d->lock) 1602 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1603 1604 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1605 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1606 1607 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1608 { 1609 return dev_get_drvdata(&hdev->dev); 1610 } 1611 1612 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1613 { 1614 dev_set_drvdata(&hdev->dev, data); 1615 } 1616 1617 static inline void *hci_get_priv(struct hci_dev *hdev) 1618 { 1619 return (char *)hdev + sizeof(*hdev); 1620 } 1621 1622 struct hci_dev *hci_dev_get(int index); 1623 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1624 1625 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); 1626 1627 static inline struct hci_dev *hci_alloc_dev(void) 1628 { 1629 return hci_alloc_dev_priv(0); 1630 } 1631 1632 void hci_free_dev(struct hci_dev *hdev); 1633 int hci_register_dev(struct hci_dev *hdev); 1634 void hci_unregister_dev(struct hci_dev *hdev); 1635 void hci_release_dev(struct hci_dev *hdev); 1636 int hci_register_suspend_notifier(struct hci_dev *hdev); 1637 int hci_unregister_suspend_notifier(struct hci_dev *hdev); 1638 int hci_suspend_dev(struct hci_dev *hdev); 1639 int hci_resume_dev(struct hci_dev *hdev); 1640 int hci_reset_dev(struct hci_dev *hdev); 1641 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1642 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1643 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1644 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1645 1646 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) 1647 { 1648 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 1649 hdev->msft_opcode = opcode; 1650 #endif 1651 } 1652 1653 static inline void hci_set_aosp_capable(struct hci_dev *hdev) 1654 { 1655 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 1656 hdev->aosp_capable = true; 1657 #endif 1658 } 1659 1660 static inline void hci_devcd_setup(struct hci_dev *hdev) 1661 { 1662 #ifdef CONFIG_DEV_COREDUMP 1663 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx); 1664 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout); 1665 skb_queue_head_init(&hdev->dump.dump_q); 1666 #endif 1667 } 1668 1669 int hci_dev_open(__u16 dev); 1670 int hci_dev_close(__u16 dev); 1671 int hci_dev_do_close(struct hci_dev *hdev); 1672 int hci_dev_reset(__u16 dev); 1673 int hci_dev_reset_stat(__u16 dev); 1674 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1675 int hci_get_dev_list(void __user *arg); 1676 int hci_get_dev_info(void __user *arg); 1677 int hci_get_conn_list(void __user *arg); 1678 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1679 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1680 int hci_inquiry(void __user *arg); 1681 1682 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1683 bdaddr_t *bdaddr, u8 type); 1684 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1685 struct list_head *list, bdaddr_t *bdaddr, 1686 u8 type); 1687 struct bdaddr_list_with_flags * 1688 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1689 u8 type); 1690 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1691 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1692 u8 type, u8 *peer_irk, u8 *local_irk); 1693 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1694 u8 type, u32 flags); 1695 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1696 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1697 u8 type); 1698 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1699 u8 type); 1700 void hci_bdaddr_list_clear(struct list_head *list); 1701 1702 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1703 bdaddr_t *addr, u8 addr_type); 1704 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1705 bdaddr_t *addr, u8 addr_type); 1706 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1707 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1708 void hci_conn_params_free(struct hci_conn_params *param); 1709 1710 void hci_pend_le_list_del_init(struct hci_conn_params *param); 1711 void hci_pend_le_list_add(struct hci_conn_params *param, 1712 struct list_head *list); 1713 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1714 bdaddr_t *addr, 1715 u8 addr_type); 1716 1717 void hci_uuids_clear(struct hci_dev *hdev); 1718 1719 void hci_link_keys_clear(struct hci_dev *hdev); 1720 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1721 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1722 bdaddr_t *bdaddr, u8 *val, u8 type, 1723 u8 pin_len, bool *persistent); 1724 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1725 u8 addr_type, u8 type, u8 authenticated, 1726 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1727 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1728 u8 addr_type, u8 role); 1729 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1730 void hci_smp_ltks_clear(struct hci_dev *hdev); 1731 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1732 1733 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1734 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1735 u8 addr_type); 1736 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1737 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1738 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1739 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]); 1740 void hci_blocked_keys_clear(struct hci_dev *hdev); 1741 void hci_smp_irks_clear(struct hci_dev *hdev); 1742 1743 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1744 1745 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1746 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1747 bdaddr_t *bdaddr, u8 bdaddr_type); 1748 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1749 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1750 u8 *hash256, u8 *rand256); 1751 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1752 u8 bdaddr_type); 1753 1754 void hci_adv_instances_clear(struct hci_dev *hdev); 1755 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1756 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1757 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, 1758 u32 flags, u16 adv_data_len, u8 *adv_data, 1759 u16 scan_rsp_len, u8 *scan_rsp_data, 1760 u16 timeout, u16 duration, s8 tx_power, 1761 u32 min_interval, u32 max_interval, 1762 u8 mesh_handle); 1763 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, 1764 u32 flags, u8 data_len, u8 *data, 1765 u32 min_interval, u32 max_interval); 1766 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, 1767 u16 adv_data_len, u8 *adv_data, 1768 u16 scan_rsp_len, u8 *scan_rsp_data); 1769 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1770 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1771 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance); 1772 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); 1773 1774 void hci_adv_monitors_clear(struct hci_dev *hdev); 1775 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1776 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1777 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); 1778 int hci_remove_all_adv_monitor(struct hci_dev *hdev); 1779 bool hci_is_adv_monitoring(struct hci_dev *hdev); 1780 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); 1781 1782 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1783 1784 void hci_init_sysfs(struct hci_dev *hdev); 1785 void hci_conn_init_sysfs(struct hci_conn *conn); 1786 void hci_conn_add_sysfs(struct hci_conn *conn); 1787 void hci_conn_del_sysfs(struct hci_conn *conn); 1788 1789 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1790 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent) 1791 1792 /* ----- LMP capabilities ----- */ 1793 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1794 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1795 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1796 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1797 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1798 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1799 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1800 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1801 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1802 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1803 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1804 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M) 1805 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1806 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1807 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1808 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1809 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1810 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1811 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1812 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1813 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1814 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1815 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1816 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1817 1818 /* ----- Extended LMP capabilities ----- */ 1819 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL) 1820 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL) 1821 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1822 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1823 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1824 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1825 1826 /* ----- Host capabilities ----- */ 1827 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1828 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1829 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1830 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1831 1832 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1833 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1834 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1835 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1836 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ 1837 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) 1838 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ 1839 !adv->rpa_expired) 1840 1841 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1842 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1843 1844 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M)) 1845 1846 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1847 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1848 1849 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \ 1850 !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \ 1851 &(dev)->quirks)) 1852 1853 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1854 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1855 1856 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY) 1857 1858 /* Use LL Privacy based address resolution if supported */ 1859 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \ 1860 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY)) 1861 1862 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \ 1863 (hdev->commands[39] & 0x04)) 1864 1865 /* Use enhanced synchronous connection if command is supported and its quirk 1866 * has not been set. 1867 */ 1868 #define enhanced_sync_conn_capable(dev) \ 1869 (((dev)->commands[29] & 0x08) && \ 1870 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks)) 1871 1872 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1873 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1874 ((dev)->commands[37] & 0x40) && \ 1875 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks)) 1876 1877 /* Use ext create connection if command is supported */ 1878 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1879 1880 /* Extended advertising support */ 1881 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1882 1883 /* Maximum advertising length */ 1884 #define max_adv_len(dev) \ 1885 (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH) 1886 1887 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789: 1888 * 1889 * C24: Mandatory if the LE Controller supports Connection State and either 1890 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported 1891 */ 1892 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \ 1893 ext_adv_capable(dev)) 1894 1895 /* Periodic advertising support */ 1896 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV)) 1897 1898 /* CIS Master/Slave and BIS support */ 1899 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev)) 1900 #define cis_capable(dev) \ 1901 (cis_central_capable(dev) || cis_peripheral_capable(dev)) 1902 #define cis_central_capable(dev) \ 1903 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL) 1904 #define cis_peripheral_capable(dev) \ 1905 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) 1906 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) 1907 #define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER) 1908 1909 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \ 1910 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks))) 1911 1912 /* ----- HCI protocols ----- */ 1913 #define HCI_PROTO_DEFER 0x01 1914 1915 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1916 __u8 type, __u8 *flags) 1917 { 1918 switch (type) { 1919 case ACL_LINK: 1920 return l2cap_connect_ind(hdev, bdaddr); 1921 1922 case SCO_LINK: 1923 case ESCO_LINK: 1924 return sco_connect_ind(hdev, bdaddr, flags); 1925 1926 case ISO_LINK: 1927 return iso_connect_ind(hdev, bdaddr, flags); 1928 1929 default: 1930 BT_ERR("unknown link type %d", type); 1931 return -EINVAL; 1932 } 1933 } 1934 1935 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1936 { 1937 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1938 return HCI_ERROR_REMOTE_USER_TERM; 1939 1940 return l2cap_disconn_ind(conn); 1941 } 1942 1943 /* ----- HCI callbacks ----- */ 1944 struct hci_cb { 1945 struct list_head list; 1946 1947 char *name; 1948 1949 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1950 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1951 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1952 __u8 encrypt); 1953 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1954 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1955 }; 1956 1957 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1958 { 1959 struct hci_cb *cb; 1960 1961 mutex_lock(&hci_cb_list_lock); 1962 list_for_each_entry(cb, &hci_cb_list, list) { 1963 if (cb->connect_cfm) 1964 cb->connect_cfm(conn, status); 1965 } 1966 mutex_unlock(&hci_cb_list_lock); 1967 1968 if (conn->connect_cfm_cb) 1969 conn->connect_cfm_cb(conn, status); 1970 } 1971 1972 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1973 { 1974 struct hci_cb *cb; 1975 1976 mutex_lock(&hci_cb_list_lock); 1977 list_for_each_entry(cb, &hci_cb_list, list) { 1978 if (cb->disconn_cfm) 1979 cb->disconn_cfm(conn, reason); 1980 } 1981 mutex_unlock(&hci_cb_list_lock); 1982 1983 if (conn->disconn_cfm_cb) 1984 conn->disconn_cfm_cb(conn, reason); 1985 } 1986 1987 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1988 { 1989 struct hci_cb *cb; 1990 __u8 encrypt; 1991 1992 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1993 return; 1994 1995 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1996 1997 mutex_lock(&hci_cb_list_lock); 1998 list_for_each_entry(cb, &hci_cb_list, list) { 1999 if (cb->security_cfm) 2000 cb->security_cfm(conn, status, encrypt); 2001 } 2002 mutex_unlock(&hci_cb_list_lock); 2003 2004 if (conn->security_cfm_cb) 2005 conn->security_cfm_cb(conn, status); 2006 } 2007 2008 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status) 2009 { 2010 struct hci_cb *cb; 2011 __u8 encrypt; 2012 2013 if (conn->state == BT_CONFIG) { 2014 if (!status) 2015 conn->state = BT_CONNECTED; 2016 2017 hci_connect_cfm(conn, status); 2018 hci_conn_drop(conn); 2019 return; 2020 } 2021 2022 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) 2023 encrypt = 0x00; 2024 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) 2025 encrypt = 0x02; 2026 else 2027 encrypt = 0x01; 2028 2029 if (!status) { 2030 if (conn->sec_level == BT_SECURITY_SDP) 2031 conn->sec_level = BT_SECURITY_LOW; 2032 2033 if (conn->pending_sec_level > conn->sec_level) 2034 conn->sec_level = conn->pending_sec_level; 2035 } 2036 2037 mutex_lock(&hci_cb_list_lock); 2038 list_for_each_entry(cb, &hci_cb_list, list) { 2039 if (cb->security_cfm) 2040 cb->security_cfm(conn, status, encrypt); 2041 } 2042 mutex_unlock(&hci_cb_list_lock); 2043 2044 if (conn->security_cfm_cb) 2045 conn->security_cfm_cb(conn, status); 2046 } 2047 2048 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 2049 { 2050 struct hci_cb *cb; 2051 2052 mutex_lock(&hci_cb_list_lock); 2053 list_for_each_entry(cb, &hci_cb_list, list) { 2054 if (cb->key_change_cfm) 2055 cb->key_change_cfm(conn, status); 2056 } 2057 mutex_unlock(&hci_cb_list_lock); 2058 } 2059 2060 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 2061 __u8 role) 2062 { 2063 struct hci_cb *cb; 2064 2065 mutex_lock(&hci_cb_list_lock); 2066 list_for_each_entry(cb, &hci_cb_list, list) { 2067 if (cb->role_switch_cfm) 2068 cb->role_switch_cfm(conn, status, role); 2069 } 2070 mutex_unlock(&hci_cb_list_lock); 2071 } 2072 2073 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 2074 { 2075 if (addr_type != ADDR_LE_DEV_RANDOM) 2076 return false; 2077 2078 if ((bdaddr->b[5] & 0xc0) == 0x40) 2079 return true; 2080 2081 return false; 2082 } 2083 2084 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 2085 { 2086 if (addr_type == ADDR_LE_DEV_PUBLIC) 2087 return true; 2088 2089 /* Check for Random Static address type */ 2090 if ((addr->b[5] & 0xc0) == 0xc0) 2091 return true; 2092 2093 return false; 2094 } 2095 2096 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 2097 bdaddr_t *bdaddr, u8 addr_type) 2098 { 2099 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 2100 return NULL; 2101 2102 return hci_find_irk_by_rpa(hdev, bdaddr); 2103 } 2104 2105 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 2106 u16 to_multiplier) 2107 { 2108 u16 max_latency; 2109 2110 if (min > max || min < 6 || max > 3200) 2111 return -EINVAL; 2112 2113 if (to_multiplier < 10 || to_multiplier > 3200) 2114 return -EINVAL; 2115 2116 if (max >= to_multiplier * 8) 2117 return -EINVAL; 2118 2119 max_latency = (to_multiplier * 4 / max) - 1; 2120 if (latency > 499 || latency > max_latency) 2121 return -EINVAL; 2122 2123 return 0; 2124 } 2125 2126 int hci_register_cb(struct hci_cb *hcb); 2127 int hci_unregister_cb(struct hci_cb *hcb); 2128 2129 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 2130 const void *param); 2131 2132 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 2133 const void *param); 2134 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 2135 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 2136 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); 2137 2138 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 2139 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); 2140 2141 u32 hci_conn_get_phy(struct hci_conn *conn); 2142 2143 /* ----- HCI Sockets ----- */ 2144 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 2145 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 2146 int flag, struct sock *skip_sk); 2147 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 2148 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 2149 void *data, u16 data_len, ktime_t tstamp, 2150 int flag, struct sock *skip_sk); 2151 2152 void hci_sock_dev_event(struct hci_dev *hdev, int event); 2153 2154 #define HCI_MGMT_VAR_LEN BIT(0) 2155 #define HCI_MGMT_NO_HDEV BIT(1) 2156 #define HCI_MGMT_UNTRUSTED BIT(2) 2157 #define HCI_MGMT_UNCONFIGURED BIT(3) 2158 #define HCI_MGMT_HDEV_OPTIONAL BIT(4) 2159 2160 struct hci_mgmt_handler { 2161 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 2162 u16 data_len); 2163 size_t data_len; 2164 unsigned long flags; 2165 }; 2166 2167 struct hci_mgmt_chan { 2168 struct list_head list; 2169 unsigned short channel; 2170 size_t handler_count; 2171 const struct hci_mgmt_handler *handlers; 2172 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 2173 }; 2174 2175 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 2176 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 2177 2178 /* Management interface */ 2179 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 2180 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 2181 BIT(BDADDR_LE_RANDOM)) 2182 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 2183 BIT(BDADDR_LE_PUBLIC) | \ 2184 BIT(BDADDR_LE_RANDOM)) 2185 2186 /* These LE scan and inquiry parameters were chosen according to LE General 2187 * Discovery Procedure specification. 2188 */ 2189 #define DISCOV_LE_SCAN_WIN 0x12 2190 #define DISCOV_LE_SCAN_INT 0x12 2191 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 2192 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 2193 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 2194 #define DISCOV_BREDR_INQUIRY_LEN 0x08 2195 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 2196 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ 2197 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ 2198 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */ 2199 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */ 2200 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */ 2201 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */ 2202 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10) 2203 2204 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */ 2205 2206 void mgmt_fill_version_info(void *ver); 2207 int mgmt_new_settings(struct hci_dev *hdev); 2208 void mgmt_index_added(struct hci_dev *hdev); 2209 void mgmt_index_removed(struct hci_dev *hdev); 2210 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 2211 void mgmt_power_on(struct hci_dev *hdev, int err); 2212 void __mgmt_power_off(struct hci_dev *hdev); 2213 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 2214 bool persistent); 2215 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 2216 u8 *name, u8 name_len); 2217 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 2218 u8 link_type, u8 addr_type, u8 reason, 2219 bool mgmt_connected); 2220 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 2221 u8 link_type, u8 addr_type, u8 status); 2222 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2223 u8 addr_type, u8 status); 2224 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 2225 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2226 u8 status); 2227 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2228 u8 status); 2229 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2230 u8 link_type, u8 addr_type, u32 value, 2231 u8 confirm_hint); 2232 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2233 u8 link_type, u8 addr_type, u8 status); 2234 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2235 u8 link_type, u8 addr_type, u8 status); 2236 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2237 u8 link_type, u8 addr_type); 2238 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2239 u8 link_type, u8 addr_type, u8 status); 2240 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2241 u8 link_type, u8 addr_type, u8 status); 2242 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 2243 u8 link_type, u8 addr_type, u32 passkey, 2244 u8 entered); 2245 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 2246 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 2247 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 2248 u8 status); 2249 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 2250 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 2251 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 2252 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2253 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 2254 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len, 2255 u64 instant); 2256 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2257 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 2258 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 2259 void mgmt_suspending(struct hci_dev *hdev, u8 state); 2260 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr, 2261 u8 addr_type); 2262 bool mgmt_powering_down(struct hci_dev *hdev); 2263 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 2264 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 2265 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 2266 bool persistent); 2267 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 2268 u8 bdaddr_type, u8 store_hint, u16 min_interval, 2269 u16 max_interval, u16 latency, u16 timeout); 2270 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 2271 bool mgmt_get_connectable(struct hci_dev *hdev); 2272 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 2273 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 2274 u8 instance); 2275 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 2276 u8 instance); 2277 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); 2278 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 2279 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, 2280 bdaddr_t *bdaddr, u8 addr_type); 2281 2282 int hci_abort_conn(struct hci_conn *conn, u8 reason); 2283 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 2284 u16 to_multiplier); 2285 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 2286 __u8 ltk[16], __u8 key_size); 2287 2288 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 2289 u8 *bdaddr_type); 2290 2291 #define SCO_AIRMODE_MASK 0x0003 2292 #define SCO_AIRMODE_CVSD 0x0000 2293 #define SCO_AIRMODE_TRANSP 0x0003 2294 2295 #define LOCAL_CODEC_ACL_MASK BIT(0) 2296 #define LOCAL_CODEC_SCO_MASK BIT(1) 2297 2298 #define TRANSPORT_TYPE_MAX 0x04 2299 2300 #endif /* __HCI_CORE_H */ 2301