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_AD_LENGTH]; 87 u8 last_adv_data_len; 88 bool report_invalid_rssi; 89 bool result_filtering; 90 bool limited; 91 s8 rssi; 92 u16 uuid_count; 93 u8 (*uuids)[16]; 94 unsigned long scan_start; 95 unsigned long scan_duration; 96 unsigned long name_resolve_timeout; 97 }; 98 99 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */ 100 101 enum suspend_tasks { 102 SUSPEND_PAUSE_DISCOVERY, 103 SUSPEND_UNPAUSE_DISCOVERY, 104 105 SUSPEND_PAUSE_ADVERTISING, 106 SUSPEND_UNPAUSE_ADVERTISING, 107 108 SUSPEND_SCAN_DISABLE, 109 SUSPEND_SCAN_ENABLE, 110 SUSPEND_DISCONNECTING, 111 112 SUSPEND_POWERING_DOWN, 113 114 SUSPEND_PREPARE_NOTIFIER, 115 116 SUSPEND_SET_ADV_FILTER, 117 __SUSPEND_NUM_TASKS 118 }; 119 120 enum suspended_state { 121 BT_RUNNING = 0, 122 BT_SUSPEND_DISCONNECT, 123 BT_SUSPEND_CONFIGURE_WAKE, 124 }; 125 126 struct hci_conn_hash { 127 struct list_head list; 128 unsigned int acl_num; 129 unsigned int amp_num; 130 unsigned int sco_num; 131 unsigned int iso_num; 132 unsigned int le_num; 133 unsigned int le_num_peripheral; 134 }; 135 136 struct bdaddr_list { 137 struct list_head list; 138 bdaddr_t bdaddr; 139 u8 bdaddr_type; 140 }; 141 142 struct codec_list { 143 struct list_head list; 144 u8 id; 145 __u16 cid; 146 __u16 vid; 147 u8 transport; 148 u8 num_caps; 149 u32 len; 150 struct hci_codec_caps caps[]; 151 }; 152 153 struct bdaddr_list_with_irk { 154 struct list_head list; 155 bdaddr_t bdaddr; 156 u8 bdaddr_type; 157 u8 peer_irk[16]; 158 u8 local_irk[16]; 159 }; 160 161 /* Bitmask of connection flags */ 162 enum hci_conn_flags { 163 HCI_CONN_FLAG_REMOTE_WAKEUP = 1, 164 HCI_CONN_FLAG_DEVICE_PRIVACY = 2, 165 }; 166 typedef u8 hci_conn_flags_t; 167 168 struct bdaddr_list_with_flags { 169 struct list_head list; 170 bdaddr_t bdaddr; 171 u8 bdaddr_type; 172 hci_conn_flags_t flags; 173 }; 174 175 struct bt_uuid { 176 struct list_head list; 177 u8 uuid[16]; 178 u8 size; 179 u8 svc_hint; 180 }; 181 182 struct blocked_key { 183 struct list_head list; 184 struct rcu_head rcu; 185 u8 type; 186 u8 val[16]; 187 }; 188 189 struct smp_csrk { 190 bdaddr_t bdaddr; 191 u8 bdaddr_type; 192 u8 type; 193 u8 val[16]; 194 }; 195 196 struct smp_ltk { 197 struct list_head list; 198 struct rcu_head rcu; 199 bdaddr_t bdaddr; 200 u8 bdaddr_type; 201 u8 authenticated; 202 u8 type; 203 u8 enc_size; 204 __le16 ediv; 205 __le64 rand; 206 u8 val[16]; 207 }; 208 209 struct smp_irk { 210 struct list_head list; 211 struct rcu_head rcu; 212 bdaddr_t rpa; 213 bdaddr_t bdaddr; 214 u8 addr_type; 215 u8 val[16]; 216 }; 217 218 struct link_key { 219 struct list_head list; 220 struct rcu_head rcu; 221 bdaddr_t bdaddr; 222 u8 type; 223 u8 val[HCI_LINK_KEY_SIZE]; 224 u8 pin_len; 225 }; 226 227 struct oob_data { 228 struct list_head list; 229 bdaddr_t bdaddr; 230 u8 bdaddr_type; 231 u8 present; 232 u8 hash192[16]; 233 u8 rand192[16]; 234 u8 hash256[16]; 235 u8 rand256[16]; 236 }; 237 238 struct adv_info { 239 struct list_head list; 240 bool enabled; 241 bool pending; 242 bool periodic; 243 __u8 mesh; 244 __u8 instance; 245 __u32 flags; 246 __u16 timeout; 247 __u16 remaining_time; 248 __u16 duration; 249 __u16 adv_data_len; 250 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 251 bool adv_data_changed; 252 __u16 scan_rsp_len; 253 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 254 bool scan_rsp_changed; 255 __u16 per_adv_data_len; 256 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 257 __s8 tx_power; 258 __u32 min_interval; 259 __u32 max_interval; 260 bdaddr_t random_addr; 261 bool rpa_expired; 262 struct delayed_work rpa_expired_cb; 263 }; 264 265 #define HCI_MAX_ADV_INSTANCES 5 266 #define HCI_DEFAULT_ADV_DURATION 2 267 268 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F 269 270 #define DATA_CMP(_d1, _l1, _d2, _l2) \ 271 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2) 272 273 #define ADV_DATA_CMP(_adv, _data, _len) \ 274 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len) 275 276 #define SCAN_RSP_CMP(_adv, _data, _len) \ 277 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len) 278 279 struct monitored_device { 280 struct list_head list; 281 282 bdaddr_t bdaddr; 283 __u8 addr_type; 284 __u16 handle; 285 bool notified; 286 }; 287 288 struct adv_pattern { 289 struct list_head list; 290 __u8 ad_type; 291 __u8 offset; 292 __u8 length; 293 __u8 value[HCI_MAX_AD_LENGTH]; 294 }; 295 296 struct adv_rssi_thresholds { 297 __s8 low_threshold; 298 __s8 high_threshold; 299 __u16 low_threshold_timeout; 300 __u16 high_threshold_timeout; 301 __u8 sampling_period; 302 }; 303 304 struct adv_monitor { 305 struct list_head patterns; 306 struct adv_rssi_thresholds rssi; 307 __u16 handle; 308 309 enum { 310 ADV_MONITOR_STATE_NOT_REGISTERED, 311 ADV_MONITOR_STATE_REGISTERED, 312 ADV_MONITOR_STATE_OFFLOADED 313 } state; 314 }; 315 316 #define HCI_MIN_ADV_MONITOR_HANDLE 1 317 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32 318 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16 319 #define HCI_ADV_MONITOR_EXT_NONE 1 320 #define HCI_ADV_MONITOR_EXT_MSFT 2 321 322 #define HCI_MAX_SHORT_NAME_LENGTH 10 323 324 #define HCI_CONN_HANDLE_UNSET 0xffff 325 #define HCI_CONN_HANDLE_MAX 0x0eff 326 327 /* Min encryption key size to match with SMP */ 328 #define HCI_MIN_ENC_KEY_SIZE 7 329 330 /* Default LE RPA expiry time, 15 minutes */ 331 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 332 333 /* Default min/max age of connection information (1s/3s) */ 334 #define DEFAULT_CONN_INFO_MIN_AGE 1000 335 #define DEFAULT_CONN_INFO_MAX_AGE 3000 336 /* Default authenticated payload timeout 30s */ 337 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8 338 339 struct amp_assoc { 340 __u16 len; 341 __u16 offset; 342 __u16 rem_len; 343 __u16 len_so_far; 344 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 345 }; 346 347 #define HCI_MAX_PAGES 3 348 349 struct hci_dev { 350 struct list_head list; 351 struct mutex lock; 352 353 char name[8]; 354 unsigned long flags; 355 __u16 id; 356 __u8 bus; 357 __u8 dev_type; 358 bdaddr_t bdaddr; 359 bdaddr_t setup_addr; 360 bdaddr_t public_addr; 361 bdaddr_t random_addr; 362 bdaddr_t static_addr; 363 __u8 adv_addr_type; 364 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 365 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 366 __u8 eir[HCI_MAX_EIR_LENGTH]; 367 __u16 appearance; 368 __u8 dev_class[3]; 369 __u8 major_class; 370 __u8 minor_class; 371 __u8 max_page; 372 __u8 features[HCI_MAX_PAGES][8]; 373 __u8 le_features[8]; 374 __u8 le_accept_list_size; 375 __u8 le_resolv_list_size; 376 __u8 le_num_of_adv_sets; 377 __u8 le_states[8]; 378 __u8 mesh_ad_types[16]; 379 __u8 mesh_send_ref; 380 __u8 commands[64]; 381 __u8 hci_ver; 382 __u16 hci_rev; 383 __u8 lmp_ver; 384 __u16 manufacturer; 385 __u16 lmp_subver; 386 __u16 voice_setting; 387 __u8 num_iac; 388 __u16 stored_max_keys; 389 __u16 stored_num_keys; 390 __u8 io_capability; 391 __s8 inq_tx_power; 392 __u8 err_data_reporting; 393 __u16 page_scan_interval; 394 __u16 page_scan_window; 395 __u8 page_scan_type; 396 __u8 le_adv_channel_map; 397 __u16 le_adv_min_interval; 398 __u16 le_adv_max_interval; 399 __u8 le_scan_type; 400 __u16 le_scan_interval; 401 __u16 le_scan_window; 402 __u16 le_scan_int_suspend; 403 __u16 le_scan_window_suspend; 404 __u16 le_scan_int_discovery; 405 __u16 le_scan_window_discovery; 406 __u16 le_scan_int_adv_monitor; 407 __u16 le_scan_window_adv_monitor; 408 __u16 le_scan_int_connect; 409 __u16 le_scan_window_connect; 410 __u16 le_conn_min_interval; 411 __u16 le_conn_max_interval; 412 __u16 le_conn_latency; 413 __u16 le_supv_timeout; 414 __u16 le_def_tx_len; 415 __u16 le_def_tx_time; 416 __u16 le_max_tx_len; 417 __u16 le_max_tx_time; 418 __u16 le_max_rx_len; 419 __u16 le_max_rx_time; 420 __u8 le_max_key_size; 421 __u8 le_min_key_size; 422 __u16 discov_interleaved_timeout; 423 __u16 conn_info_min_age; 424 __u16 conn_info_max_age; 425 __u16 auth_payload_timeout; 426 __u8 min_enc_key_size; 427 __u8 max_enc_key_size; 428 __u8 pairing_opts; 429 __u8 ssp_debug_mode; 430 __u8 hw_error_code; 431 __u32 clock; 432 __u16 advmon_allowlist_duration; 433 __u16 advmon_no_filter_duration; 434 __u8 enable_advmon_interleave_scan; 435 436 __u16 devid_source; 437 __u16 devid_vendor; 438 __u16 devid_product; 439 __u16 devid_version; 440 441 __u8 def_page_scan_type; 442 __u16 def_page_scan_int; 443 __u16 def_page_scan_window; 444 __u8 def_inq_scan_type; 445 __u16 def_inq_scan_int; 446 __u16 def_inq_scan_window; 447 __u16 def_br_lsto; 448 __u16 def_page_timeout; 449 __u16 def_multi_adv_rotation_duration; 450 __u16 def_le_autoconnect_timeout; 451 __s8 min_le_tx_power; 452 __s8 max_le_tx_power; 453 454 __u16 pkt_type; 455 __u16 esco_type; 456 __u16 link_policy; 457 __u16 link_mode; 458 459 __u32 idle_timeout; 460 __u16 sniff_min_interval; 461 __u16 sniff_max_interval; 462 463 __u8 amp_status; 464 __u32 amp_total_bw; 465 __u32 amp_max_bw; 466 __u32 amp_min_latency; 467 __u32 amp_max_pdu; 468 __u8 amp_type; 469 __u16 amp_pal_cap; 470 __u16 amp_assoc_size; 471 __u32 amp_max_flush_to; 472 __u32 amp_be_flush_to; 473 474 struct amp_assoc loc_assoc; 475 476 __u8 flow_ctl_mode; 477 478 unsigned int auto_accept_delay; 479 480 unsigned long quirks; 481 482 atomic_t cmd_cnt; 483 unsigned int acl_cnt; 484 unsigned int sco_cnt; 485 unsigned int le_cnt; 486 unsigned int iso_cnt; 487 488 unsigned int acl_mtu; 489 unsigned int sco_mtu; 490 unsigned int le_mtu; 491 unsigned int iso_mtu; 492 unsigned int acl_pkts; 493 unsigned int sco_pkts; 494 unsigned int le_pkts; 495 unsigned int iso_pkts; 496 497 __u16 block_len; 498 __u16 block_mtu; 499 __u16 num_blocks; 500 __u16 block_cnt; 501 502 unsigned long acl_last_tx; 503 unsigned long sco_last_tx; 504 unsigned long le_last_tx; 505 506 __u8 le_tx_def_phys; 507 __u8 le_rx_def_phys; 508 509 struct workqueue_struct *workqueue; 510 struct workqueue_struct *req_workqueue; 511 512 struct work_struct power_on; 513 struct delayed_work power_off; 514 struct work_struct error_reset; 515 struct work_struct cmd_sync_work; 516 struct list_head cmd_sync_work_list; 517 struct mutex cmd_sync_work_lock; 518 struct work_struct cmd_sync_cancel_work; 519 struct work_struct reenable_adv_work; 520 521 __u16 discov_timeout; 522 struct delayed_work discov_off; 523 524 struct delayed_work service_cache; 525 526 struct delayed_work cmd_timer; 527 struct delayed_work ncmd_timer; 528 529 struct work_struct rx_work; 530 struct work_struct cmd_work; 531 struct work_struct tx_work; 532 533 struct delayed_work le_scan_disable; 534 struct delayed_work le_scan_restart; 535 536 struct sk_buff_head rx_q; 537 struct sk_buff_head raw_q; 538 struct sk_buff_head cmd_q; 539 540 struct sk_buff *sent_cmd; 541 struct sk_buff *recv_event; 542 543 struct mutex req_lock; 544 wait_queue_head_t req_wait_q; 545 __u32 req_status; 546 __u32 req_result; 547 struct sk_buff *req_skb; 548 549 void *smp_data; 550 void *smp_bredr_data; 551 552 struct discovery_state discovery; 553 554 int discovery_old_state; 555 bool discovery_paused; 556 int advertising_old_state; 557 bool advertising_paused; 558 559 struct notifier_block suspend_notifier; 560 enum suspended_state suspend_state_next; 561 enum suspended_state suspend_state; 562 bool scanning_paused; 563 bool suspended; 564 u8 wake_reason; 565 bdaddr_t wake_addr; 566 u8 wake_addr_type; 567 568 struct hci_conn_hash conn_hash; 569 570 struct list_head mesh_pending; 571 struct list_head mgmt_pending; 572 struct list_head reject_list; 573 struct list_head accept_list; 574 struct list_head uuids; 575 struct list_head link_keys; 576 struct list_head long_term_keys; 577 struct list_head identity_resolving_keys; 578 struct list_head remote_oob_data; 579 struct list_head le_accept_list; 580 struct list_head le_resolv_list; 581 struct list_head le_conn_params; 582 struct list_head pend_le_conns; 583 struct list_head pend_le_reports; 584 struct list_head blocked_keys; 585 struct list_head local_codecs; 586 587 struct hci_dev_stats stat; 588 589 atomic_t promisc; 590 591 const char *hw_info; 592 const char *fw_info; 593 struct dentry *debugfs; 594 595 #ifdef CONFIG_DEV_COREDUMP 596 struct hci_devcoredump dump; 597 #endif 598 599 struct device dev; 600 601 struct rfkill *rfkill; 602 603 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 604 hci_conn_flags_t conn_flags; 605 606 __s8 adv_tx_power; 607 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 608 __u8 adv_data_len; 609 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 610 __u8 scan_rsp_data_len; 611 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 612 __u8 per_adv_data_len; 613 614 struct list_head adv_instances; 615 unsigned int adv_instance_cnt; 616 __u8 cur_adv_instance; 617 __u16 adv_instance_timeout; 618 struct delayed_work adv_instance_expire; 619 620 struct idr adv_monitors_idr; 621 unsigned int adv_monitors_cnt; 622 623 __u8 irk[16]; 624 __u32 rpa_timeout; 625 struct delayed_work rpa_expired; 626 bdaddr_t rpa; 627 628 struct delayed_work mesh_send_done; 629 630 enum { 631 INTERLEAVE_SCAN_NONE, 632 INTERLEAVE_SCAN_NO_FILTER, 633 INTERLEAVE_SCAN_ALLOWLIST 634 } interleave_scan_state; 635 636 struct delayed_work interleave_scan; 637 638 struct list_head monitored_devices; 639 bool advmon_pend_notify; 640 641 #if IS_ENABLED(CONFIG_BT_LEDS) 642 struct led_trigger *power_led; 643 #endif 644 645 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 646 __u16 msft_opcode; 647 void *msft_data; 648 bool msft_curve_validity; 649 #endif 650 651 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 652 bool aosp_capable; 653 bool aosp_quality_report; 654 #endif 655 656 int (*open)(struct hci_dev *hdev); 657 int (*close)(struct hci_dev *hdev); 658 int (*flush)(struct hci_dev *hdev); 659 int (*setup)(struct hci_dev *hdev); 660 int (*shutdown)(struct hci_dev *hdev); 661 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 662 void (*notify)(struct hci_dev *hdev, unsigned int evt); 663 void (*hw_error)(struct hci_dev *hdev, u8 code); 664 int (*post_init)(struct hci_dev *hdev); 665 int (*set_diag)(struct hci_dev *hdev, bool enable); 666 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 667 void (*cmd_timeout)(struct hci_dev *hdev); 668 void (*reset)(struct hci_dev *hdev); 669 bool (*wakeup)(struct hci_dev *hdev); 670 int (*set_quality_report)(struct hci_dev *hdev, bool enable); 671 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path); 672 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type, 673 struct bt_codec *codec, __u8 *vnd_len, 674 __u8 **vnd_data); 675 }; 676 677 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 678 679 enum conn_reasons { 680 CONN_REASON_PAIR_DEVICE, 681 CONN_REASON_L2CAP_CHAN, 682 CONN_REASON_SCO_CONNECT, 683 CONN_REASON_ISO_CONNECT, 684 }; 685 686 struct hci_conn { 687 struct list_head list; 688 689 atomic_t refcnt; 690 691 bdaddr_t dst; 692 __u8 dst_type; 693 bdaddr_t src; 694 __u8 src_type; 695 bdaddr_t init_addr; 696 __u8 init_addr_type; 697 bdaddr_t resp_addr; 698 __u8 resp_addr_type; 699 __u8 adv_instance; 700 __u16 handle; 701 __u16 sync_handle; 702 __u16 state; 703 __u8 mode; 704 __u8 type; 705 __u8 role; 706 bool out; 707 __u8 attempt; 708 __u8 dev_class[3]; 709 __u8 features[HCI_MAX_PAGES][8]; 710 __u16 pkt_type; 711 __u16 link_policy; 712 __u8 key_type; 713 __u8 auth_type; 714 __u8 sec_level; 715 __u8 pending_sec_level; 716 __u8 pin_length; 717 __u8 enc_key_size; 718 __u8 io_capability; 719 __u32 passkey_notify; 720 __u8 passkey_entered; 721 __u16 disc_timeout; 722 __u16 conn_timeout; 723 __u16 setting; 724 __u16 auth_payload_timeout; 725 __u16 le_conn_min_interval; 726 __u16 le_conn_max_interval; 727 __u16 le_conn_interval; 728 __u16 le_conn_latency; 729 __u16 le_supv_timeout; 730 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 731 __u8 le_adv_data_len; 732 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH]; 733 __u8 le_per_adv_data_len; 734 __u8 le_tx_phy; 735 __u8 le_rx_phy; 736 __s8 rssi; 737 __s8 tx_power; 738 __s8 max_tx_power; 739 struct bt_iso_qos iso_qos; 740 unsigned long flags; 741 742 enum conn_reasons conn_reason; 743 744 __u32 clock; 745 __u16 clock_accuracy; 746 747 unsigned long conn_info_timestamp; 748 749 __u8 remote_cap; 750 __u8 remote_auth; 751 __u8 remote_id; 752 753 unsigned int sent; 754 755 struct sk_buff_head data_q; 756 struct list_head chan_list; 757 758 struct delayed_work disc_work; 759 struct delayed_work auto_accept_work; 760 struct delayed_work idle_work; 761 struct delayed_work le_conn_timeout; 762 struct work_struct le_scan_cleanup; 763 764 struct device dev; 765 struct dentry *debugfs; 766 767 struct hci_dev *hdev; 768 void *l2cap_data; 769 void *sco_data; 770 void *iso_data; 771 struct amp_mgr *amp_mgr; 772 773 struct list_head link_list; 774 struct hci_conn *parent; 775 struct hci_link *link; 776 777 struct bt_codec codec; 778 779 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 780 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 781 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 782 783 void (*cleanup)(struct hci_conn *conn); 784 }; 785 786 struct hci_link { 787 struct list_head list; 788 struct hci_conn *conn; 789 }; 790 791 struct hci_chan { 792 struct list_head list; 793 __u16 handle; 794 struct hci_conn *conn; 795 struct sk_buff_head data_q; 796 unsigned int sent; 797 __u8 state; 798 bool amp; 799 }; 800 801 struct hci_conn_params { 802 struct list_head list; 803 struct list_head action; 804 805 bdaddr_t addr; 806 u8 addr_type; 807 808 u16 conn_min_interval; 809 u16 conn_max_interval; 810 u16 conn_latency; 811 u16 supervision_timeout; 812 813 enum { 814 HCI_AUTO_CONN_DISABLED, 815 HCI_AUTO_CONN_REPORT, 816 HCI_AUTO_CONN_DIRECT, 817 HCI_AUTO_CONN_ALWAYS, 818 HCI_AUTO_CONN_LINK_LOSS, 819 HCI_AUTO_CONN_EXPLICIT, 820 } auto_connect; 821 822 struct hci_conn *conn; 823 bool explicit_connect; 824 hci_conn_flags_t flags; 825 u8 privacy_mode; 826 }; 827 828 extern struct list_head hci_dev_list; 829 extern struct list_head hci_cb_list; 830 extern rwlock_t hci_dev_list_lock; 831 extern struct mutex hci_cb_list_lock; 832 833 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 834 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 835 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 836 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 837 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 838 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 839 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 840 841 #define hci_dev_clear_volatile_flags(hdev) \ 842 do { \ 843 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 844 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 845 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\ 846 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 847 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \ 848 } while (0) 849 850 #define hci_dev_le_state_simultaneous(hdev) \ 851 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \ 852 (hdev->le_states[4] & 0x08) && /* Central */ \ 853 (hdev->le_states[4] & 0x40) && /* Peripheral */ \ 854 (hdev->le_states[3] & 0x10)) /* Simultaneous */ 855 856 /* ----- HCI interface to upper protocols ----- */ 857 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 858 int l2cap_disconn_ind(struct hci_conn *hcon); 859 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 860 861 #if IS_ENABLED(CONFIG_BT_BREDR) 862 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 863 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 864 #else 865 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 866 __u8 *flags) 867 { 868 return 0; 869 } 870 871 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 872 { 873 } 874 #endif 875 876 #if IS_ENABLED(CONFIG_BT_LE) 877 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 878 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 879 #else 880 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 881 __u8 *flags) 882 { 883 return 0; 884 } 885 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, 886 u16 flags) 887 { 888 } 889 #endif 890 891 /* ----- Inquiry cache ----- */ 892 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 893 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 894 895 static inline void discovery_init(struct hci_dev *hdev) 896 { 897 hdev->discovery.state = DISCOVERY_STOPPED; 898 INIT_LIST_HEAD(&hdev->discovery.all); 899 INIT_LIST_HEAD(&hdev->discovery.unknown); 900 INIT_LIST_HEAD(&hdev->discovery.resolve); 901 hdev->discovery.report_invalid_rssi = true; 902 hdev->discovery.rssi = HCI_RSSI_INVALID; 903 } 904 905 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 906 { 907 hdev->discovery.result_filtering = false; 908 hdev->discovery.report_invalid_rssi = true; 909 hdev->discovery.rssi = HCI_RSSI_INVALID; 910 hdev->discovery.uuid_count = 0; 911 kfree(hdev->discovery.uuids); 912 hdev->discovery.uuids = NULL; 913 hdev->discovery.scan_start = 0; 914 hdev->discovery.scan_duration = 0; 915 } 916 917 bool hci_discovery_active(struct hci_dev *hdev); 918 919 void hci_discovery_set_state(struct hci_dev *hdev, int state); 920 921 static inline int inquiry_cache_empty(struct hci_dev *hdev) 922 { 923 return list_empty(&hdev->discovery.all); 924 } 925 926 static inline long inquiry_cache_age(struct hci_dev *hdev) 927 { 928 struct discovery_state *c = &hdev->discovery; 929 return jiffies - c->timestamp; 930 } 931 932 static inline long inquiry_entry_age(struct inquiry_entry *e) 933 { 934 return jiffies - e->timestamp; 935 } 936 937 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 938 bdaddr_t *bdaddr); 939 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 940 bdaddr_t *bdaddr); 941 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 942 bdaddr_t *bdaddr, 943 int state); 944 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 945 struct inquiry_entry *ie); 946 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 947 bool name_known); 948 void hci_inquiry_cache_flush(struct hci_dev *hdev); 949 950 /* ----- HCI Connections ----- */ 951 enum { 952 HCI_CONN_AUTH_PEND, 953 HCI_CONN_REAUTH_PEND, 954 HCI_CONN_ENCRYPT_PEND, 955 HCI_CONN_RSWITCH_PEND, 956 HCI_CONN_MODE_CHANGE_PEND, 957 HCI_CONN_SCO_SETUP_PEND, 958 HCI_CONN_MGMT_CONNECTED, 959 HCI_CONN_SSP_ENABLED, 960 HCI_CONN_SC_ENABLED, 961 HCI_CONN_AES_CCM, 962 HCI_CONN_POWER_SAVE, 963 HCI_CONN_FLUSH_KEY, 964 HCI_CONN_ENCRYPT, 965 HCI_CONN_AUTH, 966 HCI_CONN_SECURE, 967 HCI_CONN_FIPS, 968 HCI_CONN_STK_ENCRYPT, 969 HCI_CONN_AUTH_INITIATOR, 970 HCI_CONN_DROP, 971 HCI_CONN_CANCEL, 972 HCI_CONN_PARAM_REMOVAL_PEND, 973 HCI_CONN_NEW_LINK_KEY, 974 HCI_CONN_SCANNING, 975 HCI_CONN_AUTH_FAILURE, 976 HCI_CONN_PER_ADV, 977 }; 978 979 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 980 { 981 struct hci_dev *hdev = conn->hdev; 982 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 983 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 984 } 985 986 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 987 { 988 struct hci_dev *hdev = conn->hdev; 989 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 990 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 991 } 992 993 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 994 { 995 struct hci_conn_hash *h = &hdev->conn_hash; 996 list_add_tail_rcu(&c->list, &h->list); 997 switch (c->type) { 998 case ACL_LINK: 999 h->acl_num++; 1000 break; 1001 case AMP_LINK: 1002 h->amp_num++; 1003 break; 1004 case LE_LINK: 1005 h->le_num++; 1006 if (c->role == HCI_ROLE_SLAVE) 1007 h->le_num_peripheral++; 1008 break; 1009 case SCO_LINK: 1010 case ESCO_LINK: 1011 h->sco_num++; 1012 break; 1013 case ISO_LINK: 1014 h->iso_num++; 1015 break; 1016 } 1017 } 1018 1019 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 1020 { 1021 struct hci_conn_hash *h = &hdev->conn_hash; 1022 1023 list_del_rcu(&c->list); 1024 synchronize_rcu(); 1025 1026 switch (c->type) { 1027 case ACL_LINK: 1028 h->acl_num--; 1029 break; 1030 case AMP_LINK: 1031 h->amp_num--; 1032 break; 1033 case LE_LINK: 1034 h->le_num--; 1035 if (c->role == HCI_ROLE_SLAVE) 1036 h->le_num_peripheral--; 1037 break; 1038 case SCO_LINK: 1039 case ESCO_LINK: 1040 h->sco_num--; 1041 break; 1042 case ISO_LINK: 1043 h->iso_num--; 1044 break; 1045 } 1046 } 1047 1048 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 1049 { 1050 struct hci_conn_hash *h = &hdev->conn_hash; 1051 switch (type) { 1052 case ACL_LINK: 1053 return h->acl_num; 1054 case AMP_LINK: 1055 return h->amp_num; 1056 case LE_LINK: 1057 return h->le_num; 1058 case SCO_LINK: 1059 case ESCO_LINK: 1060 return h->sco_num; 1061 case ISO_LINK: 1062 return h->iso_num; 1063 default: 1064 return 0; 1065 } 1066 } 1067 1068 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 1069 { 1070 struct hci_conn_hash *c = &hdev->conn_hash; 1071 1072 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num; 1073 } 1074 1075 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 1076 { 1077 struct hci_conn_hash *h = &hdev->conn_hash; 1078 struct hci_conn *c; 1079 __u8 type = INVALID_LINK; 1080 1081 rcu_read_lock(); 1082 1083 list_for_each_entry_rcu(c, &h->list, list) { 1084 if (c->handle == handle) { 1085 type = c->type; 1086 break; 1087 } 1088 } 1089 1090 rcu_read_unlock(); 1091 1092 return type; 1093 } 1094 1095 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev, 1096 bdaddr_t *ba, 1097 __u8 big, __u8 bis) 1098 { 1099 struct hci_conn_hash *h = &hdev->conn_hash; 1100 struct hci_conn *c; 1101 1102 rcu_read_lock(); 1103 1104 list_for_each_entry_rcu(c, &h->list, list) { 1105 if (bacmp(&c->dst, ba) || c->type != ISO_LINK) 1106 continue; 1107 1108 if (c->iso_qos.bcast.big == big && c->iso_qos.bcast.bis == bis) { 1109 rcu_read_unlock(); 1110 return c; 1111 } 1112 } 1113 rcu_read_unlock(); 1114 1115 return NULL; 1116 } 1117 1118 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 1119 __u16 handle) 1120 { 1121 struct hci_conn_hash *h = &hdev->conn_hash; 1122 struct hci_conn *c; 1123 1124 rcu_read_lock(); 1125 1126 list_for_each_entry_rcu(c, &h->list, list) { 1127 if (c->handle == handle) { 1128 rcu_read_unlock(); 1129 return c; 1130 } 1131 } 1132 rcu_read_unlock(); 1133 1134 return NULL; 1135 } 1136 1137 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 1138 __u8 type, bdaddr_t *ba) 1139 { 1140 struct hci_conn_hash *h = &hdev->conn_hash; 1141 struct hci_conn *c; 1142 1143 rcu_read_lock(); 1144 1145 list_for_each_entry_rcu(c, &h->list, list) { 1146 if (c->type == type && !bacmp(&c->dst, ba)) { 1147 rcu_read_unlock(); 1148 return c; 1149 } 1150 } 1151 1152 rcu_read_unlock(); 1153 1154 return NULL; 1155 } 1156 1157 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 1158 bdaddr_t *ba, 1159 __u8 ba_type) 1160 { 1161 struct hci_conn_hash *h = &hdev->conn_hash; 1162 struct hci_conn *c; 1163 1164 rcu_read_lock(); 1165 1166 list_for_each_entry_rcu(c, &h->list, list) { 1167 if (c->type != LE_LINK) 1168 continue; 1169 1170 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1171 rcu_read_unlock(); 1172 return c; 1173 } 1174 } 1175 1176 rcu_read_unlock(); 1177 1178 return NULL; 1179 } 1180 1181 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev, 1182 bdaddr_t *ba, 1183 __u8 ba_type, 1184 __u8 cig, 1185 __u8 id) 1186 { 1187 struct hci_conn_hash *h = &hdev->conn_hash; 1188 struct hci_conn *c; 1189 1190 rcu_read_lock(); 1191 1192 list_for_each_entry_rcu(c, &h->list, list) { 1193 if (c->type != ISO_LINK) 1194 continue; 1195 1196 /* Match CIG ID if set */ 1197 if (cig != BT_ISO_QOS_CIG_UNSET && cig != c->iso_qos.ucast.cig) 1198 continue; 1199 1200 /* Match CIS ID if set */ 1201 if (id != BT_ISO_QOS_CIS_UNSET && id != c->iso_qos.ucast.cis) 1202 continue; 1203 1204 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1205 rcu_read_unlock(); 1206 return c; 1207 } 1208 } 1209 1210 rcu_read_unlock(); 1211 1212 return NULL; 1213 } 1214 1215 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev, 1216 __u8 handle) 1217 { 1218 struct hci_conn_hash *h = &hdev->conn_hash; 1219 struct hci_conn *c; 1220 1221 rcu_read_lock(); 1222 1223 list_for_each_entry_rcu(c, &h->list, list) { 1224 if (c->type != ISO_LINK) 1225 continue; 1226 1227 if (handle == c->iso_qos.ucast.cig) { 1228 rcu_read_unlock(); 1229 return c; 1230 } 1231 } 1232 1233 rcu_read_unlock(); 1234 1235 return NULL; 1236 } 1237 1238 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev, 1239 __u8 handle) 1240 { 1241 struct hci_conn_hash *h = &hdev->conn_hash; 1242 struct hci_conn *c; 1243 1244 rcu_read_lock(); 1245 1246 list_for_each_entry_rcu(c, &h->list, list) { 1247 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK) 1248 continue; 1249 1250 if (handle == c->iso_qos.bcast.big) { 1251 rcu_read_unlock(); 1252 return c; 1253 } 1254 } 1255 1256 rcu_read_unlock(); 1257 1258 return NULL; 1259 } 1260 1261 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 1262 __u8 type, __u16 state) 1263 { 1264 struct hci_conn_hash *h = &hdev->conn_hash; 1265 struct hci_conn *c; 1266 1267 rcu_read_lock(); 1268 1269 list_for_each_entry_rcu(c, &h->list, list) { 1270 if (c->type == type && c->state == state) { 1271 rcu_read_unlock(); 1272 return c; 1273 } 1274 } 1275 1276 rcu_read_unlock(); 1277 1278 return NULL; 1279 } 1280 1281 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data); 1282 static inline void hci_conn_hash_list_state(struct hci_dev *hdev, 1283 hci_conn_func_t func, __u8 type, 1284 __u16 state, void *data) 1285 { 1286 struct hci_conn_hash *h = &hdev->conn_hash; 1287 struct hci_conn *c; 1288 1289 if (!func) 1290 return; 1291 1292 rcu_read_lock(); 1293 1294 list_for_each_entry_rcu(c, &h->list, list) { 1295 if (c->type == type && c->state == state) 1296 func(c, data); 1297 } 1298 1299 rcu_read_unlock(); 1300 } 1301 1302 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 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 == LE_LINK && c->state == BT_CONNECT && 1311 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 1312 rcu_read_unlock(); 1313 return c; 1314 } 1315 } 1316 1317 rcu_read_unlock(); 1318 1319 return NULL; 1320 } 1321 1322 int hci_disconnect(struct hci_conn *conn, __u8 reason); 1323 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 1324 void hci_sco_setup(struct hci_conn *conn, __u8 status); 1325 bool hci_iso_setup_path(struct hci_conn *conn); 1326 int hci_le_create_cis(struct hci_conn *conn); 1327 1328 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 1329 u8 role); 1330 void hci_conn_del(struct hci_conn *conn); 1331 void hci_conn_hash_flush(struct hci_dev *hdev); 1332 void hci_conn_check_pending(struct hci_dev *hdev); 1333 1334 struct hci_chan *hci_chan_create(struct hci_conn *conn); 1335 void hci_chan_del(struct hci_chan *chan); 1336 void hci_chan_list_flush(struct hci_conn *conn); 1337 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 1338 1339 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 1340 u8 dst_type, u8 sec_level, 1341 u16 conn_timeout, 1342 enum conn_reasons conn_reason); 1343 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 1344 u8 dst_type, bool dst_resolved, u8 sec_level, 1345 u16 conn_timeout, u8 role); 1346 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 1347 u8 sec_level, u8 auth_type, 1348 enum conn_reasons conn_reason); 1349 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 1350 __u16 setting, struct bt_codec *codec); 1351 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, 1352 __u8 dst_type, struct bt_iso_qos *qos); 1353 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, 1354 __u8 dst_type, struct bt_iso_qos *qos); 1355 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, 1356 __u8 dst_type, struct bt_iso_qos *qos, 1357 __u8 data_len, __u8 *data); 1358 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, 1359 __u8 sid, struct bt_iso_qos *qos); 1360 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos, 1361 __u16 sync_handle, __u8 num_bis, __u8 bis[]); 1362 int hci_conn_check_link_mode(struct hci_conn *conn); 1363 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 1364 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 1365 bool initiator); 1366 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 1367 1368 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 1369 1370 void hci_conn_failed(struct hci_conn *conn, u8 status); 1371 1372 /* 1373 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 1374 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 1375 * working or anything else. They just guarantee that the object is available 1376 * and can be dereferenced. So you can use its locks, local variables and any 1377 * other constant data. 1378 * Before accessing runtime data, you _must_ lock the object and then check that 1379 * it is still running. As soon as you release the locks, the connection might 1380 * get dropped, though. 1381 * 1382 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 1383 * how long the underlying connection is held. So every channel that runs on the 1384 * hci_conn object calls this to prevent the connection from disappearing. As 1385 * long as you hold a device, you must also guarantee that you have a valid 1386 * reference to the device via hci_conn_get() (or the initial reference from 1387 * hci_conn_add()). 1388 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 1389 * break because nobody cares for that. But this means, we cannot use 1390 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 1391 */ 1392 1393 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 1394 { 1395 get_device(&conn->dev); 1396 return conn; 1397 } 1398 1399 static inline void hci_conn_put(struct hci_conn *conn) 1400 { 1401 put_device(&conn->dev); 1402 } 1403 1404 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn) 1405 { 1406 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1407 1408 atomic_inc(&conn->refcnt); 1409 cancel_delayed_work(&conn->disc_work); 1410 1411 return conn; 1412 } 1413 1414 static inline void hci_conn_drop(struct hci_conn *conn) 1415 { 1416 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1417 1418 if (atomic_dec_and_test(&conn->refcnt)) { 1419 unsigned long timeo; 1420 1421 switch (conn->type) { 1422 case ACL_LINK: 1423 case LE_LINK: 1424 cancel_delayed_work(&conn->idle_work); 1425 if (conn->state == BT_CONNECTED) { 1426 timeo = conn->disc_timeout; 1427 if (!conn->out) 1428 timeo *= 2; 1429 } else { 1430 timeo = 0; 1431 } 1432 break; 1433 1434 case AMP_LINK: 1435 timeo = conn->disc_timeout; 1436 break; 1437 1438 default: 1439 timeo = 0; 1440 break; 1441 } 1442 1443 cancel_delayed_work(&conn->disc_work); 1444 queue_delayed_work(conn->hdev->workqueue, 1445 &conn->disc_work, timeo); 1446 } 1447 } 1448 1449 /* ----- HCI Devices ----- */ 1450 static inline void hci_dev_put(struct hci_dev *d) 1451 { 1452 BT_DBG("%s orig refcnt %d", d->name, 1453 kref_read(&d->dev.kobj.kref)); 1454 1455 put_device(&d->dev); 1456 } 1457 1458 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1459 { 1460 BT_DBG("%s orig refcnt %d", d->name, 1461 kref_read(&d->dev.kobj.kref)); 1462 1463 get_device(&d->dev); 1464 return d; 1465 } 1466 1467 #define hci_dev_lock(d) mutex_lock(&d->lock) 1468 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1469 1470 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1471 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1472 1473 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1474 { 1475 return dev_get_drvdata(&hdev->dev); 1476 } 1477 1478 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1479 { 1480 dev_set_drvdata(&hdev->dev, data); 1481 } 1482 1483 static inline void *hci_get_priv(struct hci_dev *hdev) 1484 { 1485 return (char *)hdev + sizeof(*hdev); 1486 } 1487 1488 struct hci_dev *hci_dev_get(int index); 1489 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1490 1491 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); 1492 1493 static inline struct hci_dev *hci_alloc_dev(void) 1494 { 1495 return hci_alloc_dev_priv(0); 1496 } 1497 1498 void hci_free_dev(struct hci_dev *hdev); 1499 int hci_register_dev(struct hci_dev *hdev); 1500 void hci_unregister_dev(struct hci_dev *hdev); 1501 void hci_release_dev(struct hci_dev *hdev); 1502 int hci_register_suspend_notifier(struct hci_dev *hdev); 1503 int hci_unregister_suspend_notifier(struct hci_dev *hdev); 1504 int hci_suspend_dev(struct hci_dev *hdev); 1505 int hci_resume_dev(struct hci_dev *hdev); 1506 int hci_reset_dev(struct hci_dev *hdev); 1507 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1508 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1509 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1510 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1511 1512 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) 1513 { 1514 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 1515 hdev->msft_opcode = opcode; 1516 #endif 1517 } 1518 1519 static inline void hci_set_aosp_capable(struct hci_dev *hdev) 1520 { 1521 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 1522 hdev->aosp_capable = true; 1523 #endif 1524 } 1525 1526 static inline void hci_devcd_setup(struct hci_dev *hdev) 1527 { 1528 #ifdef CONFIG_DEV_COREDUMP 1529 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx); 1530 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout); 1531 skb_queue_head_init(&hdev->dump.dump_q); 1532 #endif 1533 } 1534 1535 int hci_dev_open(__u16 dev); 1536 int hci_dev_close(__u16 dev); 1537 int hci_dev_do_close(struct hci_dev *hdev); 1538 int hci_dev_reset(__u16 dev); 1539 int hci_dev_reset_stat(__u16 dev); 1540 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1541 int hci_get_dev_list(void __user *arg); 1542 int hci_get_dev_info(void __user *arg); 1543 int hci_get_conn_list(void __user *arg); 1544 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1545 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1546 int hci_inquiry(void __user *arg); 1547 1548 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1549 bdaddr_t *bdaddr, u8 type); 1550 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1551 struct list_head *list, bdaddr_t *bdaddr, 1552 u8 type); 1553 struct bdaddr_list_with_flags * 1554 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1555 u8 type); 1556 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1557 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1558 u8 type, u8 *peer_irk, u8 *local_irk); 1559 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1560 u8 type, u32 flags); 1561 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1562 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1563 u8 type); 1564 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1565 u8 type); 1566 void hci_bdaddr_list_clear(struct list_head *list); 1567 1568 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1569 bdaddr_t *addr, u8 addr_type); 1570 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1571 bdaddr_t *addr, u8 addr_type); 1572 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1573 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1574 1575 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1576 bdaddr_t *addr, 1577 u8 addr_type); 1578 1579 void hci_uuids_clear(struct hci_dev *hdev); 1580 1581 void hci_link_keys_clear(struct hci_dev *hdev); 1582 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1583 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1584 bdaddr_t *bdaddr, u8 *val, u8 type, 1585 u8 pin_len, bool *persistent); 1586 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1587 u8 addr_type, u8 type, u8 authenticated, 1588 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1589 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1590 u8 addr_type, u8 role); 1591 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1592 void hci_smp_ltks_clear(struct hci_dev *hdev); 1593 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1594 1595 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1596 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1597 u8 addr_type); 1598 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1599 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1600 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1601 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]); 1602 void hci_blocked_keys_clear(struct hci_dev *hdev); 1603 void hci_smp_irks_clear(struct hci_dev *hdev); 1604 1605 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1606 1607 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1608 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1609 bdaddr_t *bdaddr, u8 bdaddr_type); 1610 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1611 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1612 u8 *hash256, u8 *rand256); 1613 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1614 u8 bdaddr_type); 1615 1616 void hci_adv_instances_clear(struct hci_dev *hdev); 1617 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1618 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1619 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, 1620 u32 flags, u16 adv_data_len, u8 *adv_data, 1621 u16 scan_rsp_len, u8 *scan_rsp_data, 1622 u16 timeout, u16 duration, s8 tx_power, 1623 u32 min_interval, u32 max_interval, 1624 u8 mesh_handle); 1625 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, 1626 u32 flags, u8 data_len, u8 *data, 1627 u32 min_interval, u32 max_interval); 1628 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, 1629 u16 adv_data_len, u8 *adv_data, 1630 u16 scan_rsp_len, u8 *scan_rsp_data); 1631 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1632 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1633 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance); 1634 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); 1635 1636 void hci_adv_monitors_clear(struct hci_dev *hdev); 1637 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1638 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1639 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); 1640 int hci_remove_all_adv_monitor(struct hci_dev *hdev); 1641 bool hci_is_adv_monitoring(struct hci_dev *hdev); 1642 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); 1643 1644 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1645 1646 void hci_init_sysfs(struct hci_dev *hdev); 1647 void hci_conn_init_sysfs(struct hci_conn *conn); 1648 void hci_conn_add_sysfs(struct hci_conn *conn); 1649 void hci_conn_del_sysfs(struct hci_conn *conn); 1650 1651 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1652 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent) 1653 1654 /* ----- LMP capabilities ----- */ 1655 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1656 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1657 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1658 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1659 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1660 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1661 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1662 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1663 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1664 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1665 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1666 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M) 1667 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1668 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1669 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1670 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1671 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1672 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1673 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1674 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1675 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1676 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1677 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1678 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1679 1680 /* ----- Extended LMP capabilities ----- */ 1681 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL) 1682 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL) 1683 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1684 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1685 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1686 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1687 1688 /* ----- Host capabilities ----- */ 1689 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1690 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1691 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1692 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1693 1694 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1695 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1696 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1697 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1698 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ 1699 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) 1700 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ 1701 !adv->rpa_expired) 1702 1703 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1704 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1705 1706 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M)) 1707 1708 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1709 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1710 1711 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED)) 1712 1713 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1714 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1715 1716 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY) 1717 1718 /* Use LL Privacy based address resolution if supported */ 1719 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \ 1720 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY)) 1721 1722 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \ 1723 (hdev->commands[39] & 0x04)) 1724 1725 /* Use enhanced synchronous connection if command is supported and its quirk 1726 * has not been set. 1727 */ 1728 #define enhanced_sync_conn_capable(dev) \ 1729 (((dev)->commands[29] & 0x08) && \ 1730 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks)) 1731 1732 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1733 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1734 ((dev)->commands[37] & 0x40) && \ 1735 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks)) 1736 1737 /* Use ext create connection if command is supported */ 1738 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1739 1740 /* Extended advertising support */ 1741 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1742 1743 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789: 1744 * 1745 * C24: Mandatory if the LE Controller supports Connection State and either 1746 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported 1747 */ 1748 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \ 1749 ext_adv_capable(dev)) 1750 1751 /* Periodic advertising support */ 1752 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV)) 1753 1754 /* CIS Master/Slave and BIS support */ 1755 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev)) 1756 #define cis_capable(dev) \ 1757 (cis_central_capable(dev) || cis_peripheral_capable(dev)) 1758 #define cis_central_capable(dev) \ 1759 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL) 1760 #define cis_peripheral_capable(dev) \ 1761 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) 1762 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) 1763 1764 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \ 1765 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks))) 1766 1767 /* ----- HCI protocols ----- */ 1768 #define HCI_PROTO_DEFER 0x01 1769 1770 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1771 __u8 type, __u8 *flags) 1772 { 1773 switch (type) { 1774 case ACL_LINK: 1775 return l2cap_connect_ind(hdev, bdaddr); 1776 1777 case SCO_LINK: 1778 case ESCO_LINK: 1779 return sco_connect_ind(hdev, bdaddr, flags); 1780 1781 case ISO_LINK: 1782 return iso_connect_ind(hdev, bdaddr, flags); 1783 1784 default: 1785 BT_ERR("unknown link type %d", type); 1786 return -EINVAL; 1787 } 1788 } 1789 1790 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1791 { 1792 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1793 return HCI_ERROR_REMOTE_USER_TERM; 1794 1795 return l2cap_disconn_ind(conn); 1796 } 1797 1798 /* ----- HCI callbacks ----- */ 1799 struct hci_cb { 1800 struct list_head list; 1801 1802 char *name; 1803 1804 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1805 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1806 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1807 __u8 encrypt); 1808 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1809 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1810 }; 1811 1812 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1813 { 1814 struct hci_cb *cb; 1815 1816 mutex_lock(&hci_cb_list_lock); 1817 list_for_each_entry(cb, &hci_cb_list, list) { 1818 if (cb->connect_cfm) 1819 cb->connect_cfm(conn, status); 1820 } 1821 mutex_unlock(&hci_cb_list_lock); 1822 1823 if (conn->connect_cfm_cb) 1824 conn->connect_cfm_cb(conn, status); 1825 } 1826 1827 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1828 { 1829 struct hci_cb *cb; 1830 1831 mutex_lock(&hci_cb_list_lock); 1832 list_for_each_entry(cb, &hci_cb_list, list) { 1833 if (cb->disconn_cfm) 1834 cb->disconn_cfm(conn, reason); 1835 } 1836 mutex_unlock(&hci_cb_list_lock); 1837 1838 if (conn->disconn_cfm_cb) 1839 conn->disconn_cfm_cb(conn, reason); 1840 } 1841 1842 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1843 { 1844 struct hci_cb *cb; 1845 __u8 encrypt; 1846 1847 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1848 return; 1849 1850 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1851 1852 mutex_lock(&hci_cb_list_lock); 1853 list_for_each_entry(cb, &hci_cb_list, list) { 1854 if (cb->security_cfm) 1855 cb->security_cfm(conn, status, encrypt); 1856 } 1857 mutex_unlock(&hci_cb_list_lock); 1858 1859 if (conn->security_cfm_cb) 1860 conn->security_cfm_cb(conn, status); 1861 } 1862 1863 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status) 1864 { 1865 struct hci_cb *cb; 1866 __u8 encrypt; 1867 1868 if (conn->state == BT_CONFIG) { 1869 if (!status) 1870 conn->state = BT_CONNECTED; 1871 1872 hci_connect_cfm(conn, status); 1873 hci_conn_drop(conn); 1874 return; 1875 } 1876 1877 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) 1878 encrypt = 0x00; 1879 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) 1880 encrypt = 0x02; 1881 else 1882 encrypt = 0x01; 1883 1884 if (!status) { 1885 if (conn->sec_level == BT_SECURITY_SDP) 1886 conn->sec_level = BT_SECURITY_LOW; 1887 1888 if (conn->pending_sec_level > conn->sec_level) 1889 conn->sec_level = conn->pending_sec_level; 1890 } 1891 1892 mutex_lock(&hci_cb_list_lock); 1893 list_for_each_entry(cb, &hci_cb_list, list) { 1894 if (cb->security_cfm) 1895 cb->security_cfm(conn, status, encrypt); 1896 } 1897 mutex_unlock(&hci_cb_list_lock); 1898 1899 if (conn->security_cfm_cb) 1900 conn->security_cfm_cb(conn, status); 1901 } 1902 1903 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1904 { 1905 struct hci_cb *cb; 1906 1907 mutex_lock(&hci_cb_list_lock); 1908 list_for_each_entry(cb, &hci_cb_list, list) { 1909 if (cb->key_change_cfm) 1910 cb->key_change_cfm(conn, status); 1911 } 1912 mutex_unlock(&hci_cb_list_lock); 1913 } 1914 1915 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1916 __u8 role) 1917 { 1918 struct hci_cb *cb; 1919 1920 mutex_lock(&hci_cb_list_lock); 1921 list_for_each_entry(cb, &hci_cb_list, list) { 1922 if (cb->role_switch_cfm) 1923 cb->role_switch_cfm(conn, status, role); 1924 } 1925 mutex_unlock(&hci_cb_list_lock); 1926 } 1927 1928 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1929 { 1930 if (addr_type != ADDR_LE_DEV_RANDOM) 1931 return false; 1932 1933 if ((bdaddr->b[5] & 0xc0) == 0x40) 1934 return true; 1935 1936 return false; 1937 } 1938 1939 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1940 { 1941 if (addr_type == ADDR_LE_DEV_PUBLIC) 1942 return true; 1943 1944 /* Check for Random Static address type */ 1945 if ((addr->b[5] & 0xc0) == 0xc0) 1946 return true; 1947 1948 return false; 1949 } 1950 1951 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1952 bdaddr_t *bdaddr, u8 addr_type) 1953 { 1954 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1955 return NULL; 1956 1957 return hci_find_irk_by_rpa(hdev, bdaddr); 1958 } 1959 1960 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1961 u16 to_multiplier) 1962 { 1963 u16 max_latency; 1964 1965 if (min > max || min < 6 || max > 3200) 1966 return -EINVAL; 1967 1968 if (to_multiplier < 10 || to_multiplier > 3200) 1969 return -EINVAL; 1970 1971 if (max >= to_multiplier * 8) 1972 return -EINVAL; 1973 1974 max_latency = (to_multiplier * 4 / max) - 1; 1975 if (latency > 499 || latency > max_latency) 1976 return -EINVAL; 1977 1978 return 0; 1979 } 1980 1981 int hci_register_cb(struct hci_cb *hcb); 1982 int hci_unregister_cb(struct hci_cb *hcb); 1983 1984 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 1985 const void *param); 1986 1987 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1988 const void *param); 1989 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1990 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1991 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); 1992 1993 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1994 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); 1995 1996 u32 hci_conn_get_phy(struct hci_conn *conn); 1997 1998 /* ----- HCI Sockets ----- */ 1999 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 2000 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 2001 int flag, struct sock *skip_sk); 2002 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 2003 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 2004 void *data, u16 data_len, ktime_t tstamp, 2005 int flag, struct sock *skip_sk); 2006 2007 void hci_sock_dev_event(struct hci_dev *hdev, int event); 2008 2009 #define HCI_MGMT_VAR_LEN BIT(0) 2010 #define HCI_MGMT_NO_HDEV BIT(1) 2011 #define HCI_MGMT_UNTRUSTED BIT(2) 2012 #define HCI_MGMT_UNCONFIGURED BIT(3) 2013 #define HCI_MGMT_HDEV_OPTIONAL BIT(4) 2014 2015 struct hci_mgmt_handler { 2016 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 2017 u16 data_len); 2018 size_t data_len; 2019 unsigned long flags; 2020 }; 2021 2022 struct hci_mgmt_chan { 2023 struct list_head list; 2024 unsigned short channel; 2025 size_t handler_count; 2026 const struct hci_mgmt_handler *handlers; 2027 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 2028 }; 2029 2030 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 2031 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 2032 2033 /* Management interface */ 2034 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 2035 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 2036 BIT(BDADDR_LE_RANDOM)) 2037 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 2038 BIT(BDADDR_LE_PUBLIC) | \ 2039 BIT(BDADDR_LE_RANDOM)) 2040 2041 /* These LE scan and inquiry parameters were chosen according to LE General 2042 * Discovery Procedure specification. 2043 */ 2044 #define DISCOV_LE_SCAN_WIN 0x12 2045 #define DISCOV_LE_SCAN_INT 0x12 2046 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 2047 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 2048 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 2049 #define DISCOV_BREDR_INQUIRY_LEN 0x08 2050 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 2051 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ 2052 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ 2053 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */ 2054 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */ 2055 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */ 2056 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */ 2057 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10) 2058 2059 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */ 2060 2061 void mgmt_fill_version_info(void *ver); 2062 int mgmt_new_settings(struct hci_dev *hdev); 2063 void mgmt_index_added(struct hci_dev *hdev); 2064 void mgmt_index_removed(struct hci_dev *hdev); 2065 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 2066 void mgmt_power_on(struct hci_dev *hdev, int err); 2067 void __mgmt_power_off(struct hci_dev *hdev); 2068 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 2069 bool persistent); 2070 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 2071 u8 *name, u8 name_len); 2072 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 2073 u8 link_type, u8 addr_type, u8 reason, 2074 bool mgmt_connected); 2075 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 2076 u8 link_type, u8 addr_type, u8 status); 2077 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2078 u8 addr_type, u8 status); 2079 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 2080 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2081 u8 status); 2082 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2083 u8 status); 2084 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2085 u8 link_type, u8 addr_type, u32 value, 2086 u8 confirm_hint); 2087 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2088 u8 link_type, u8 addr_type, u8 status); 2089 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2090 u8 link_type, u8 addr_type, u8 status); 2091 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2092 u8 link_type, u8 addr_type); 2093 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2094 u8 link_type, u8 addr_type, u8 status); 2095 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2096 u8 link_type, u8 addr_type, u8 status); 2097 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 2098 u8 link_type, u8 addr_type, u32 passkey, 2099 u8 entered); 2100 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 2101 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 2102 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 2103 u8 status); 2104 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 2105 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 2106 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 2107 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2108 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 2109 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len, 2110 u64 instant); 2111 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2112 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 2113 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 2114 void mgmt_suspending(struct hci_dev *hdev, u8 state); 2115 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr, 2116 u8 addr_type); 2117 bool mgmt_powering_down(struct hci_dev *hdev); 2118 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 2119 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 2120 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 2121 bool persistent); 2122 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 2123 u8 bdaddr_type, u8 store_hint, u16 min_interval, 2124 u16 max_interval, u16 latency, u16 timeout); 2125 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 2126 bool mgmt_get_connectable(struct hci_dev *hdev); 2127 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 2128 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 2129 u8 instance); 2130 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 2131 u8 instance); 2132 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); 2133 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 2134 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, 2135 bdaddr_t *bdaddr, u8 addr_type); 2136 2137 int hci_abort_conn(struct hci_conn *conn, u8 reason); 2138 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 2139 u16 to_multiplier); 2140 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 2141 __u8 ltk[16], __u8 key_size); 2142 2143 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 2144 u8 *bdaddr_type); 2145 2146 #define SCO_AIRMODE_MASK 0x0003 2147 #define SCO_AIRMODE_CVSD 0x0000 2148 #define SCO_AIRMODE_TRANSP 0x0003 2149 2150 #define LOCAL_CODEC_ACL_MASK BIT(0) 2151 #define LOCAL_CODEC_SCO_MASK BIT(1) 2152 2153 #define TRANSPORT_TYPE_MAX 0x04 2154 2155 #endif /* __HCI_CORE_H */ 2156