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 mutex unregister_lock; 519 struct work_struct cmd_sync_cancel_work; 520 struct work_struct reenable_adv_work; 521 522 __u16 discov_timeout; 523 struct delayed_work discov_off; 524 525 struct delayed_work service_cache; 526 527 struct delayed_work cmd_timer; 528 struct delayed_work ncmd_timer; 529 530 struct work_struct rx_work; 531 struct work_struct cmd_work; 532 struct work_struct tx_work; 533 534 struct delayed_work le_scan_disable; 535 struct delayed_work le_scan_restart; 536 537 struct sk_buff_head rx_q; 538 struct sk_buff_head raw_q; 539 struct sk_buff_head cmd_q; 540 541 struct sk_buff *sent_cmd; 542 struct sk_buff *recv_event; 543 544 struct mutex req_lock; 545 wait_queue_head_t req_wait_q; 546 __u32 req_status; 547 __u32 req_result; 548 struct sk_buff *req_skb; 549 550 void *smp_data; 551 void *smp_bredr_data; 552 553 struct discovery_state discovery; 554 555 int discovery_old_state; 556 bool discovery_paused; 557 int advertising_old_state; 558 bool advertising_paused; 559 560 struct notifier_block suspend_notifier; 561 enum suspended_state suspend_state_next; 562 enum suspended_state suspend_state; 563 bool scanning_paused; 564 bool suspended; 565 u8 wake_reason; 566 bdaddr_t wake_addr; 567 u8 wake_addr_type; 568 569 struct hci_conn_hash conn_hash; 570 571 struct list_head mesh_pending; 572 struct list_head mgmt_pending; 573 struct list_head reject_list; 574 struct list_head accept_list; 575 struct list_head uuids; 576 struct list_head link_keys; 577 struct list_head long_term_keys; 578 struct list_head identity_resolving_keys; 579 struct list_head remote_oob_data; 580 struct list_head le_accept_list; 581 struct list_head le_resolv_list; 582 struct list_head le_conn_params; 583 struct list_head pend_le_conns; 584 struct list_head pend_le_reports; 585 struct list_head blocked_keys; 586 struct list_head local_codecs; 587 588 struct hci_dev_stats stat; 589 590 atomic_t promisc; 591 592 const char *hw_info; 593 const char *fw_info; 594 struct dentry *debugfs; 595 596 struct hci_devcoredump dump; 597 598 struct device dev; 599 600 struct rfkill *rfkill; 601 602 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 603 hci_conn_flags_t conn_flags; 604 605 __s8 adv_tx_power; 606 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 607 __u8 adv_data_len; 608 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 609 __u8 scan_rsp_data_len; 610 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 611 __u8 per_adv_data_len; 612 613 struct list_head adv_instances; 614 unsigned int adv_instance_cnt; 615 __u8 cur_adv_instance; 616 __u16 adv_instance_timeout; 617 struct delayed_work adv_instance_expire; 618 619 struct idr adv_monitors_idr; 620 unsigned int adv_monitors_cnt; 621 622 __u8 irk[16]; 623 __u32 rpa_timeout; 624 struct delayed_work rpa_expired; 625 bdaddr_t rpa; 626 627 struct delayed_work mesh_send_done; 628 629 enum { 630 INTERLEAVE_SCAN_NONE, 631 INTERLEAVE_SCAN_NO_FILTER, 632 INTERLEAVE_SCAN_ALLOWLIST 633 } interleave_scan_state; 634 635 struct delayed_work interleave_scan; 636 637 struct list_head monitored_devices; 638 bool advmon_pend_notify; 639 640 #if IS_ENABLED(CONFIG_BT_LEDS) 641 struct led_trigger *power_led; 642 #endif 643 644 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 645 __u16 msft_opcode; 646 void *msft_data; 647 bool msft_curve_validity; 648 #endif 649 650 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 651 bool aosp_capable; 652 bool aosp_quality_report; 653 #endif 654 655 int (*open)(struct hci_dev *hdev); 656 int (*close)(struct hci_dev *hdev); 657 int (*flush)(struct hci_dev *hdev); 658 int (*setup)(struct hci_dev *hdev); 659 int (*shutdown)(struct hci_dev *hdev); 660 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 661 void (*notify)(struct hci_dev *hdev, unsigned int evt); 662 void (*hw_error)(struct hci_dev *hdev, u8 code); 663 int (*post_init)(struct hci_dev *hdev); 664 int (*set_diag)(struct hci_dev *hdev, bool enable); 665 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 666 void (*cmd_timeout)(struct hci_dev *hdev); 667 void (*reset)(struct hci_dev *hdev); 668 bool (*wakeup)(struct hci_dev *hdev); 669 int (*set_quality_report)(struct hci_dev *hdev, bool enable); 670 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path); 671 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type, 672 struct bt_codec *codec, __u8 *vnd_len, 673 __u8 **vnd_data); 674 }; 675 676 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 677 678 enum conn_reasons { 679 CONN_REASON_PAIR_DEVICE, 680 CONN_REASON_L2CAP_CHAN, 681 CONN_REASON_SCO_CONNECT, 682 CONN_REASON_ISO_CONNECT, 683 }; 684 685 struct hci_conn { 686 struct list_head list; 687 688 atomic_t refcnt; 689 690 bdaddr_t dst; 691 __u8 dst_type; 692 bdaddr_t src; 693 __u8 src_type; 694 bdaddr_t init_addr; 695 __u8 init_addr_type; 696 bdaddr_t resp_addr; 697 __u8 resp_addr_type; 698 __u8 adv_instance; 699 __u16 handle; 700 __u16 sync_handle; 701 __u16 state; 702 __u8 mode; 703 __u8 type; 704 __u8 role; 705 bool out; 706 __u8 attempt; 707 __u8 dev_class[3]; 708 __u8 features[HCI_MAX_PAGES][8]; 709 __u16 pkt_type; 710 __u16 link_policy; 711 __u8 key_type; 712 __u8 auth_type; 713 __u8 sec_level; 714 __u8 pending_sec_level; 715 __u8 pin_length; 716 __u8 enc_key_size; 717 __u8 io_capability; 718 __u32 passkey_notify; 719 __u8 passkey_entered; 720 __u16 disc_timeout; 721 __u16 conn_timeout; 722 __u16 setting; 723 __u16 auth_payload_timeout; 724 __u16 le_conn_min_interval; 725 __u16 le_conn_max_interval; 726 __u16 le_conn_interval; 727 __u16 le_conn_latency; 728 __u16 le_supv_timeout; 729 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 730 __u8 le_adv_data_len; 731 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH]; 732 __u8 le_per_adv_data_len; 733 __u8 le_tx_phy; 734 __u8 le_rx_phy; 735 __s8 rssi; 736 __s8 tx_power; 737 __s8 max_tx_power; 738 struct bt_iso_qos iso_qos; 739 unsigned long flags; 740 741 enum conn_reasons conn_reason; 742 743 __u32 clock; 744 __u16 clock_accuracy; 745 746 unsigned long conn_info_timestamp; 747 748 __u8 remote_cap; 749 __u8 remote_auth; 750 __u8 remote_id; 751 752 unsigned int sent; 753 754 struct sk_buff_head data_q; 755 struct list_head chan_list; 756 757 struct delayed_work disc_work; 758 struct delayed_work auto_accept_work; 759 struct delayed_work idle_work; 760 struct delayed_work le_conn_timeout; 761 struct work_struct le_scan_cleanup; 762 763 struct device dev; 764 struct dentry *debugfs; 765 766 struct hci_dev *hdev; 767 void *l2cap_data; 768 void *sco_data; 769 void *iso_data; 770 struct amp_mgr *amp_mgr; 771 772 struct list_head link_list; 773 struct hci_conn *parent; 774 struct hci_link *link; 775 776 struct bt_codec codec; 777 778 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 779 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 780 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 781 782 void (*cleanup)(struct hci_conn *conn); 783 }; 784 785 struct hci_link { 786 struct list_head list; 787 struct hci_conn *conn; 788 }; 789 790 struct hci_chan { 791 struct list_head list; 792 __u16 handle; 793 struct hci_conn *conn; 794 struct sk_buff_head data_q; 795 unsigned int sent; 796 __u8 state; 797 bool amp; 798 }; 799 800 struct hci_conn_params { 801 struct list_head list; 802 struct list_head action; 803 804 bdaddr_t addr; 805 u8 addr_type; 806 807 u16 conn_min_interval; 808 u16 conn_max_interval; 809 u16 conn_latency; 810 u16 supervision_timeout; 811 812 enum { 813 HCI_AUTO_CONN_DISABLED, 814 HCI_AUTO_CONN_REPORT, 815 HCI_AUTO_CONN_DIRECT, 816 HCI_AUTO_CONN_ALWAYS, 817 HCI_AUTO_CONN_LINK_LOSS, 818 HCI_AUTO_CONN_EXPLICIT, 819 } auto_connect; 820 821 struct hci_conn *conn; 822 bool explicit_connect; 823 /* Accessed without hdev->lock: */ 824 hci_conn_flags_t flags; 825 u8 privacy_mode; 826 }; 827 828 extern struct list_head hci_dev_list; 829 extern struct list_head hci_cb_list; 830 extern rwlock_t hci_dev_list_lock; 831 extern struct mutex hci_cb_list_lock; 832 833 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 834 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 835 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 836 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 837 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 838 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 839 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 840 841 #define hci_dev_clear_volatile_flags(hdev) \ 842 do { \ 843 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 844 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 845 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\ 846 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 847 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \ 848 } while (0) 849 850 #define hci_dev_le_state_simultaneous(hdev) \ 851 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \ 852 (hdev->le_states[4] & 0x08) && /* Central */ \ 853 (hdev->le_states[4] & 0x40) && /* Peripheral */ \ 854 (hdev->le_states[3] & 0x10)) /* Simultaneous */ 855 856 /* ----- HCI interface to upper protocols ----- */ 857 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 858 int l2cap_disconn_ind(struct hci_conn *hcon); 859 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 860 861 #if IS_ENABLED(CONFIG_BT_BREDR) 862 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 863 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 864 #else 865 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 866 __u8 *flags) 867 { 868 return 0; 869 } 870 871 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 872 { 873 } 874 #endif 875 876 #if IS_ENABLED(CONFIG_BT_LE) 877 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 878 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 879 #else 880 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 881 __u8 *flags) 882 { 883 return 0; 884 } 885 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, 886 u16 flags) 887 { 888 } 889 #endif 890 891 /* ----- Inquiry cache ----- */ 892 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 893 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 894 895 static inline void discovery_init(struct hci_dev *hdev) 896 { 897 hdev->discovery.state = DISCOVERY_STOPPED; 898 INIT_LIST_HEAD(&hdev->discovery.all); 899 INIT_LIST_HEAD(&hdev->discovery.unknown); 900 INIT_LIST_HEAD(&hdev->discovery.resolve); 901 hdev->discovery.report_invalid_rssi = true; 902 hdev->discovery.rssi = HCI_RSSI_INVALID; 903 } 904 905 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 906 { 907 hdev->discovery.result_filtering = false; 908 hdev->discovery.report_invalid_rssi = true; 909 hdev->discovery.rssi = HCI_RSSI_INVALID; 910 hdev->discovery.uuid_count = 0; 911 kfree(hdev->discovery.uuids); 912 hdev->discovery.uuids = NULL; 913 hdev->discovery.scan_start = 0; 914 hdev->discovery.scan_duration = 0; 915 } 916 917 bool hci_discovery_active(struct hci_dev *hdev); 918 919 void hci_discovery_set_state(struct hci_dev *hdev, int state); 920 921 static inline int inquiry_cache_empty(struct hci_dev *hdev) 922 { 923 return list_empty(&hdev->discovery.all); 924 } 925 926 static inline long inquiry_cache_age(struct hci_dev *hdev) 927 { 928 struct discovery_state *c = &hdev->discovery; 929 return jiffies - c->timestamp; 930 } 931 932 static inline long inquiry_entry_age(struct inquiry_entry *e) 933 { 934 return jiffies - e->timestamp; 935 } 936 937 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 938 bdaddr_t *bdaddr); 939 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 940 bdaddr_t *bdaddr); 941 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 942 bdaddr_t *bdaddr, 943 int state); 944 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 945 struct inquiry_entry *ie); 946 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 947 bool name_known); 948 void hci_inquiry_cache_flush(struct hci_dev *hdev); 949 950 /* ----- HCI Connections ----- */ 951 enum { 952 HCI_CONN_AUTH_PEND, 953 HCI_CONN_REAUTH_PEND, 954 HCI_CONN_ENCRYPT_PEND, 955 HCI_CONN_RSWITCH_PEND, 956 HCI_CONN_MODE_CHANGE_PEND, 957 HCI_CONN_SCO_SETUP_PEND, 958 HCI_CONN_MGMT_CONNECTED, 959 HCI_CONN_SSP_ENABLED, 960 HCI_CONN_SC_ENABLED, 961 HCI_CONN_AES_CCM, 962 HCI_CONN_POWER_SAVE, 963 HCI_CONN_FLUSH_KEY, 964 HCI_CONN_ENCRYPT, 965 HCI_CONN_AUTH, 966 HCI_CONN_SECURE, 967 HCI_CONN_FIPS, 968 HCI_CONN_STK_ENCRYPT, 969 HCI_CONN_AUTH_INITIATOR, 970 HCI_CONN_DROP, 971 HCI_CONN_CANCEL, 972 HCI_CONN_PARAM_REMOVAL_PEND, 973 HCI_CONN_NEW_LINK_KEY, 974 HCI_CONN_SCANNING, 975 HCI_CONN_AUTH_FAILURE, 976 HCI_CONN_PER_ADV, 977 }; 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 /* Match destination address if set */ 1205 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) { 1206 rcu_read_unlock(); 1207 return c; 1208 } 1209 } 1210 1211 rcu_read_unlock(); 1212 1213 return NULL; 1214 } 1215 1216 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev, 1217 __u8 handle) 1218 { 1219 struct hci_conn_hash *h = &hdev->conn_hash; 1220 struct hci_conn *c; 1221 1222 rcu_read_lock(); 1223 1224 list_for_each_entry_rcu(c, &h->list, list) { 1225 if (c->type != ISO_LINK) 1226 continue; 1227 1228 if (handle == c->iso_qos.ucast.cig) { 1229 rcu_read_unlock(); 1230 return c; 1231 } 1232 } 1233 1234 rcu_read_unlock(); 1235 1236 return NULL; 1237 } 1238 1239 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev, 1240 __u8 handle) 1241 { 1242 struct hci_conn_hash *h = &hdev->conn_hash; 1243 struct hci_conn *c; 1244 1245 rcu_read_lock(); 1246 1247 list_for_each_entry_rcu(c, &h->list, list) { 1248 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK) 1249 continue; 1250 1251 if (handle == c->iso_qos.bcast.big) { 1252 rcu_read_unlock(); 1253 return c; 1254 } 1255 } 1256 1257 rcu_read_unlock(); 1258 1259 return NULL; 1260 } 1261 1262 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 1263 __u8 type, __u16 state) 1264 { 1265 struct hci_conn_hash *h = &hdev->conn_hash; 1266 struct hci_conn *c; 1267 1268 rcu_read_lock(); 1269 1270 list_for_each_entry_rcu(c, &h->list, list) { 1271 if (c->type == type && c->state == state) { 1272 rcu_read_unlock(); 1273 return c; 1274 } 1275 } 1276 1277 rcu_read_unlock(); 1278 1279 return NULL; 1280 } 1281 1282 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data); 1283 static inline void hci_conn_hash_list_state(struct hci_dev *hdev, 1284 hci_conn_func_t func, __u8 type, 1285 __u16 state, void *data) 1286 { 1287 struct hci_conn_hash *h = &hdev->conn_hash; 1288 struct hci_conn *c; 1289 1290 if (!func) 1291 return; 1292 1293 rcu_read_lock(); 1294 1295 list_for_each_entry_rcu(c, &h->list, list) { 1296 if (c->type == type && c->state == state) 1297 func(c, data); 1298 } 1299 1300 rcu_read_unlock(); 1301 } 1302 1303 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 1304 { 1305 struct hci_conn_hash *h = &hdev->conn_hash; 1306 struct hci_conn *c; 1307 1308 rcu_read_lock(); 1309 1310 list_for_each_entry_rcu(c, &h->list, list) { 1311 if (c->type == LE_LINK && c->state == BT_CONNECT && 1312 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 1313 rcu_read_unlock(); 1314 return c; 1315 } 1316 } 1317 1318 rcu_read_unlock(); 1319 1320 return NULL; 1321 } 1322 1323 int hci_disconnect(struct hci_conn *conn, __u8 reason); 1324 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 1325 void hci_sco_setup(struct hci_conn *conn, __u8 status); 1326 bool hci_iso_setup_path(struct hci_conn *conn); 1327 int hci_le_create_cis(struct hci_conn *conn); 1328 1329 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 1330 u8 role); 1331 void hci_conn_del(struct hci_conn *conn); 1332 void hci_conn_hash_flush(struct hci_dev *hdev); 1333 void hci_conn_check_pending(struct hci_dev *hdev); 1334 1335 struct hci_chan *hci_chan_create(struct hci_conn *conn); 1336 void hci_chan_del(struct hci_chan *chan); 1337 void hci_chan_list_flush(struct hci_conn *conn); 1338 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 1339 1340 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 1341 u8 dst_type, u8 sec_level, 1342 u16 conn_timeout, 1343 enum conn_reasons conn_reason); 1344 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 1345 u8 dst_type, bool dst_resolved, u8 sec_level, 1346 u16 conn_timeout, u8 role); 1347 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 1348 u8 sec_level, u8 auth_type, 1349 enum conn_reasons conn_reason); 1350 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 1351 __u16 setting, struct bt_codec *codec); 1352 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, 1353 __u8 dst_type, struct bt_iso_qos *qos); 1354 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, 1355 __u8 dst_type, struct bt_iso_qos *qos); 1356 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, 1357 __u8 dst_type, struct bt_iso_qos *qos, 1358 __u8 data_len, __u8 *data); 1359 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, 1360 __u8 sid, struct bt_iso_qos *qos); 1361 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos, 1362 __u16 sync_handle, __u8 num_bis, __u8 bis[]); 1363 int hci_conn_check_link_mode(struct hci_conn *conn); 1364 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 1365 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 1366 bool initiator); 1367 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 1368 1369 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 1370 1371 void hci_conn_failed(struct hci_conn *conn, u8 status); 1372 1373 /* 1374 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 1375 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 1376 * working or anything else. They just guarantee that the object is available 1377 * and can be dereferenced. So you can use its locks, local variables and any 1378 * other constant data. 1379 * Before accessing runtime data, you _must_ lock the object and then check that 1380 * it is still running. As soon as you release the locks, the connection might 1381 * get dropped, though. 1382 * 1383 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 1384 * how long the underlying connection is held. So every channel that runs on the 1385 * hci_conn object calls this to prevent the connection from disappearing. As 1386 * long as you hold a device, you must also guarantee that you have a valid 1387 * reference to the device via hci_conn_get() (or the initial reference from 1388 * hci_conn_add()). 1389 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 1390 * break because nobody cares for that. But this means, we cannot use 1391 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 1392 */ 1393 1394 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 1395 { 1396 get_device(&conn->dev); 1397 return conn; 1398 } 1399 1400 static inline void hci_conn_put(struct hci_conn *conn) 1401 { 1402 put_device(&conn->dev); 1403 } 1404 1405 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn) 1406 { 1407 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1408 1409 atomic_inc(&conn->refcnt); 1410 cancel_delayed_work(&conn->disc_work); 1411 1412 return conn; 1413 } 1414 1415 static inline void hci_conn_drop(struct hci_conn *conn) 1416 { 1417 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1418 1419 if (atomic_dec_and_test(&conn->refcnt)) { 1420 unsigned long timeo; 1421 1422 switch (conn->type) { 1423 case ACL_LINK: 1424 case LE_LINK: 1425 cancel_delayed_work(&conn->idle_work); 1426 if (conn->state == BT_CONNECTED) { 1427 timeo = conn->disc_timeout; 1428 if (!conn->out) 1429 timeo *= 2; 1430 } else { 1431 timeo = 0; 1432 } 1433 break; 1434 1435 case AMP_LINK: 1436 timeo = conn->disc_timeout; 1437 break; 1438 1439 default: 1440 timeo = 0; 1441 break; 1442 } 1443 1444 cancel_delayed_work(&conn->disc_work); 1445 queue_delayed_work(conn->hdev->workqueue, 1446 &conn->disc_work, timeo); 1447 } 1448 } 1449 1450 /* ----- HCI Devices ----- */ 1451 static inline void hci_dev_put(struct hci_dev *d) 1452 { 1453 BT_DBG("%s orig refcnt %d", d->name, 1454 kref_read(&d->dev.kobj.kref)); 1455 1456 put_device(&d->dev); 1457 } 1458 1459 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1460 { 1461 BT_DBG("%s orig refcnt %d", d->name, 1462 kref_read(&d->dev.kobj.kref)); 1463 1464 get_device(&d->dev); 1465 return d; 1466 } 1467 1468 #define hci_dev_lock(d) mutex_lock(&d->lock) 1469 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1470 1471 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1472 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1473 1474 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1475 { 1476 return dev_get_drvdata(&hdev->dev); 1477 } 1478 1479 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1480 { 1481 dev_set_drvdata(&hdev->dev, data); 1482 } 1483 1484 static inline void *hci_get_priv(struct hci_dev *hdev) 1485 { 1486 return (char *)hdev + sizeof(*hdev); 1487 } 1488 1489 struct hci_dev *hci_dev_get(int index); 1490 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1491 1492 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); 1493 1494 static inline struct hci_dev *hci_alloc_dev(void) 1495 { 1496 return hci_alloc_dev_priv(0); 1497 } 1498 1499 void hci_free_dev(struct hci_dev *hdev); 1500 int hci_register_dev(struct hci_dev *hdev); 1501 void hci_unregister_dev(struct hci_dev *hdev); 1502 void hci_release_dev(struct hci_dev *hdev); 1503 int hci_register_suspend_notifier(struct hci_dev *hdev); 1504 int hci_unregister_suspend_notifier(struct hci_dev *hdev); 1505 int hci_suspend_dev(struct hci_dev *hdev); 1506 int hci_resume_dev(struct hci_dev *hdev); 1507 int hci_reset_dev(struct hci_dev *hdev); 1508 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1509 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1510 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1511 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1512 1513 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) 1514 { 1515 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 1516 hdev->msft_opcode = opcode; 1517 #endif 1518 } 1519 1520 static inline void hci_set_aosp_capable(struct hci_dev *hdev) 1521 { 1522 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 1523 hdev->aosp_capable = true; 1524 #endif 1525 } 1526 1527 static inline void hci_devcd_setup(struct hci_dev *hdev) 1528 { 1529 #ifdef CONFIG_DEV_COREDUMP 1530 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx); 1531 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout); 1532 skb_queue_head_init(&hdev->dump.dump_q); 1533 #endif 1534 } 1535 1536 int hci_dev_open(__u16 dev); 1537 int hci_dev_close(__u16 dev); 1538 int hci_dev_do_close(struct hci_dev *hdev); 1539 int hci_dev_reset(__u16 dev); 1540 int hci_dev_reset_stat(__u16 dev); 1541 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1542 int hci_get_dev_list(void __user *arg); 1543 int hci_get_dev_info(void __user *arg); 1544 int hci_get_conn_list(void __user *arg); 1545 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1546 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1547 int hci_inquiry(void __user *arg); 1548 1549 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1550 bdaddr_t *bdaddr, u8 type); 1551 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1552 struct list_head *list, bdaddr_t *bdaddr, 1553 u8 type); 1554 struct bdaddr_list_with_flags * 1555 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1556 u8 type); 1557 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1558 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1559 u8 type, u8 *peer_irk, u8 *local_irk); 1560 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1561 u8 type, u32 flags); 1562 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1563 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1564 u8 type); 1565 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1566 u8 type); 1567 void hci_bdaddr_list_clear(struct list_head *list); 1568 1569 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1570 bdaddr_t *addr, u8 addr_type); 1571 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1572 bdaddr_t *addr, u8 addr_type); 1573 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1574 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1575 void hci_conn_params_free(struct hci_conn_params *param); 1576 1577 void hci_pend_le_list_del_init(struct hci_conn_params *param); 1578 void hci_pend_le_list_add(struct hci_conn_params *param, 1579 struct list_head *list); 1580 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1581 bdaddr_t *addr, 1582 u8 addr_type); 1583 1584 void hci_uuids_clear(struct hci_dev *hdev); 1585 1586 void hci_link_keys_clear(struct hci_dev *hdev); 1587 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1588 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1589 bdaddr_t *bdaddr, u8 *val, u8 type, 1590 u8 pin_len, bool *persistent); 1591 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1592 u8 addr_type, u8 type, u8 authenticated, 1593 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1594 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1595 u8 addr_type, u8 role); 1596 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1597 void hci_smp_ltks_clear(struct hci_dev *hdev); 1598 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1599 1600 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1601 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1602 u8 addr_type); 1603 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1604 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1605 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1606 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]); 1607 void hci_blocked_keys_clear(struct hci_dev *hdev); 1608 void hci_smp_irks_clear(struct hci_dev *hdev); 1609 1610 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1611 1612 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1613 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1614 bdaddr_t *bdaddr, u8 bdaddr_type); 1615 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1616 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1617 u8 *hash256, u8 *rand256); 1618 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1619 u8 bdaddr_type); 1620 1621 void hci_adv_instances_clear(struct hci_dev *hdev); 1622 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1623 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1624 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, 1625 u32 flags, u16 adv_data_len, u8 *adv_data, 1626 u16 scan_rsp_len, u8 *scan_rsp_data, 1627 u16 timeout, u16 duration, s8 tx_power, 1628 u32 min_interval, u32 max_interval, 1629 u8 mesh_handle); 1630 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, 1631 u32 flags, u8 data_len, u8 *data, 1632 u32 min_interval, u32 max_interval); 1633 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, 1634 u16 adv_data_len, u8 *adv_data, 1635 u16 scan_rsp_len, u8 *scan_rsp_data); 1636 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1637 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1638 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance); 1639 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); 1640 1641 void hci_adv_monitors_clear(struct hci_dev *hdev); 1642 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1643 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1644 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); 1645 int hci_remove_all_adv_monitor(struct hci_dev *hdev); 1646 bool hci_is_adv_monitoring(struct hci_dev *hdev); 1647 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); 1648 1649 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1650 1651 void hci_init_sysfs(struct hci_dev *hdev); 1652 void hci_conn_init_sysfs(struct hci_conn *conn); 1653 void hci_conn_add_sysfs(struct hci_conn *conn); 1654 void hci_conn_del_sysfs(struct hci_conn *conn); 1655 1656 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1657 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent) 1658 1659 /* ----- LMP capabilities ----- */ 1660 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1661 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1662 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1663 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1664 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1665 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1666 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1667 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1668 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1669 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1670 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1671 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M) 1672 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1673 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1674 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1675 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1676 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1677 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1678 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1679 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1680 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1681 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1682 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1683 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1684 1685 /* ----- Extended LMP capabilities ----- */ 1686 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL) 1687 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL) 1688 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1689 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1690 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1691 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1692 1693 /* ----- Host capabilities ----- */ 1694 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1695 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1696 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1697 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1698 1699 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1700 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1701 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1702 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1703 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ 1704 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) 1705 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ 1706 !adv->rpa_expired) 1707 1708 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1709 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1710 1711 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M)) 1712 1713 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1714 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1715 1716 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED)) 1717 1718 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1719 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1720 1721 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY) 1722 1723 /* Use LL Privacy based address resolution if supported */ 1724 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \ 1725 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY)) 1726 1727 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \ 1728 (hdev->commands[39] & 0x04)) 1729 1730 /* Use enhanced synchronous connection if command is supported and its quirk 1731 * has not been set. 1732 */ 1733 #define enhanced_sync_conn_capable(dev) \ 1734 (((dev)->commands[29] & 0x08) && \ 1735 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks)) 1736 1737 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1738 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1739 ((dev)->commands[37] & 0x40) && \ 1740 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks)) 1741 1742 /* Use ext create connection if command is supported */ 1743 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1744 1745 /* Extended advertising support */ 1746 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1747 1748 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789: 1749 * 1750 * C24: Mandatory if the LE Controller supports Connection State and either 1751 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported 1752 */ 1753 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \ 1754 ext_adv_capable(dev)) 1755 1756 /* Periodic advertising support */ 1757 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV)) 1758 1759 /* CIS Master/Slave and BIS support */ 1760 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev)) 1761 #define cis_capable(dev) \ 1762 (cis_central_capable(dev) || cis_peripheral_capable(dev)) 1763 #define cis_central_capable(dev) \ 1764 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL) 1765 #define cis_peripheral_capable(dev) \ 1766 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) 1767 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) 1768 1769 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \ 1770 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks))) 1771 1772 /* ----- HCI protocols ----- */ 1773 #define HCI_PROTO_DEFER 0x01 1774 1775 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1776 __u8 type, __u8 *flags) 1777 { 1778 switch (type) { 1779 case ACL_LINK: 1780 return l2cap_connect_ind(hdev, bdaddr); 1781 1782 case SCO_LINK: 1783 case ESCO_LINK: 1784 return sco_connect_ind(hdev, bdaddr, flags); 1785 1786 case ISO_LINK: 1787 return iso_connect_ind(hdev, bdaddr, flags); 1788 1789 default: 1790 BT_ERR("unknown link type %d", type); 1791 return -EINVAL; 1792 } 1793 } 1794 1795 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1796 { 1797 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1798 return HCI_ERROR_REMOTE_USER_TERM; 1799 1800 return l2cap_disconn_ind(conn); 1801 } 1802 1803 /* ----- HCI callbacks ----- */ 1804 struct hci_cb { 1805 struct list_head list; 1806 1807 char *name; 1808 1809 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1810 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1811 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1812 __u8 encrypt); 1813 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1814 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1815 }; 1816 1817 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1818 { 1819 struct hci_cb *cb; 1820 1821 mutex_lock(&hci_cb_list_lock); 1822 list_for_each_entry(cb, &hci_cb_list, list) { 1823 if (cb->connect_cfm) 1824 cb->connect_cfm(conn, status); 1825 } 1826 mutex_unlock(&hci_cb_list_lock); 1827 1828 if (conn->connect_cfm_cb) 1829 conn->connect_cfm_cb(conn, status); 1830 } 1831 1832 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1833 { 1834 struct hci_cb *cb; 1835 1836 mutex_lock(&hci_cb_list_lock); 1837 list_for_each_entry(cb, &hci_cb_list, list) { 1838 if (cb->disconn_cfm) 1839 cb->disconn_cfm(conn, reason); 1840 } 1841 mutex_unlock(&hci_cb_list_lock); 1842 1843 if (conn->disconn_cfm_cb) 1844 conn->disconn_cfm_cb(conn, reason); 1845 } 1846 1847 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1848 { 1849 struct hci_cb *cb; 1850 __u8 encrypt; 1851 1852 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1853 return; 1854 1855 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1856 1857 mutex_lock(&hci_cb_list_lock); 1858 list_for_each_entry(cb, &hci_cb_list, list) { 1859 if (cb->security_cfm) 1860 cb->security_cfm(conn, status, encrypt); 1861 } 1862 mutex_unlock(&hci_cb_list_lock); 1863 1864 if (conn->security_cfm_cb) 1865 conn->security_cfm_cb(conn, status); 1866 } 1867 1868 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status) 1869 { 1870 struct hci_cb *cb; 1871 __u8 encrypt; 1872 1873 if (conn->state == BT_CONFIG) { 1874 if (!status) 1875 conn->state = BT_CONNECTED; 1876 1877 hci_connect_cfm(conn, status); 1878 hci_conn_drop(conn); 1879 return; 1880 } 1881 1882 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) 1883 encrypt = 0x00; 1884 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) 1885 encrypt = 0x02; 1886 else 1887 encrypt = 0x01; 1888 1889 if (!status) { 1890 if (conn->sec_level == BT_SECURITY_SDP) 1891 conn->sec_level = BT_SECURITY_LOW; 1892 1893 if (conn->pending_sec_level > conn->sec_level) 1894 conn->sec_level = conn->pending_sec_level; 1895 } 1896 1897 mutex_lock(&hci_cb_list_lock); 1898 list_for_each_entry(cb, &hci_cb_list, list) { 1899 if (cb->security_cfm) 1900 cb->security_cfm(conn, status, encrypt); 1901 } 1902 mutex_unlock(&hci_cb_list_lock); 1903 1904 if (conn->security_cfm_cb) 1905 conn->security_cfm_cb(conn, status); 1906 } 1907 1908 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1909 { 1910 struct hci_cb *cb; 1911 1912 mutex_lock(&hci_cb_list_lock); 1913 list_for_each_entry(cb, &hci_cb_list, list) { 1914 if (cb->key_change_cfm) 1915 cb->key_change_cfm(conn, status); 1916 } 1917 mutex_unlock(&hci_cb_list_lock); 1918 } 1919 1920 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1921 __u8 role) 1922 { 1923 struct hci_cb *cb; 1924 1925 mutex_lock(&hci_cb_list_lock); 1926 list_for_each_entry(cb, &hci_cb_list, list) { 1927 if (cb->role_switch_cfm) 1928 cb->role_switch_cfm(conn, status, role); 1929 } 1930 mutex_unlock(&hci_cb_list_lock); 1931 } 1932 1933 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1934 { 1935 if (addr_type != ADDR_LE_DEV_RANDOM) 1936 return false; 1937 1938 if ((bdaddr->b[5] & 0xc0) == 0x40) 1939 return true; 1940 1941 return false; 1942 } 1943 1944 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1945 { 1946 if (addr_type == ADDR_LE_DEV_PUBLIC) 1947 return true; 1948 1949 /* Check for Random Static address type */ 1950 if ((addr->b[5] & 0xc0) == 0xc0) 1951 return true; 1952 1953 return false; 1954 } 1955 1956 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1957 bdaddr_t *bdaddr, u8 addr_type) 1958 { 1959 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1960 return NULL; 1961 1962 return hci_find_irk_by_rpa(hdev, bdaddr); 1963 } 1964 1965 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1966 u16 to_multiplier) 1967 { 1968 u16 max_latency; 1969 1970 if (min > max || min < 6 || max > 3200) 1971 return -EINVAL; 1972 1973 if (to_multiplier < 10 || to_multiplier > 3200) 1974 return -EINVAL; 1975 1976 if (max >= to_multiplier * 8) 1977 return -EINVAL; 1978 1979 max_latency = (to_multiplier * 4 / max) - 1; 1980 if (latency > 499 || latency > max_latency) 1981 return -EINVAL; 1982 1983 return 0; 1984 } 1985 1986 int hci_register_cb(struct hci_cb *hcb); 1987 int hci_unregister_cb(struct hci_cb *hcb); 1988 1989 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 1990 const void *param); 1991 1992 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1993 const void *param); 1994 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1995 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1996 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); 1997 1998 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1999 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); 2000 2001 u32 hci_conn_get_phy(struct hci_conn *conn); 2002 2003 /* ----- HCI Sockets ----- */ 2004 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 2005 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 2006 int flag, struct sock *skip_sk); 2007 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 2008 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 2009 void *data, u16 data_len, ktime_t tstamp, 2010 int flag, struct sock *skip_sk); 2011 2012 void hci_sock_dev_event(struct hci_dev *hdev, int event); 2013 2014 #define HCI_MGMT_VAR_LEN BIT(0) 2015 #define HCI_MGMT_NO_HDEV BIT(1) 2016 #define HCI_MGMT_UNTRUSTED BIT(2) 2017 #define HCI_MGMT_UNCONFIGURED BIT(3) 2018 #define HCI_MGMT_HDEV_OPTIONAL BIT(4) 2019 2020 struct hci_mgmt_handler { 2021 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 2022 u16 data_len); 2023 size_t data_len; 2024 unsigned long flags; 2025 }; 2026 2027 struct hci_mgmt_chan { 2028 struct list_head list; 2029 unsigned short channel; 2030 size_t handler_count; 2031 const struct hci_mgmt_handler *handlers; 2032 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 2033 }; 2034 2035 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 2036 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 2037 2038 /* Management interface */ 2039 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 2040 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 2041 BIT(BDADDR_LE_RANDOM)) 2042 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 2043 BIT(BDADDR_LE_PUBLIC) | \ 2044 BIT(BDADDR_LE_RANDOM)) 2045 2046 /* These LE scan and inquiry parameters were chosen according to LE General 2047 * Discovery Procedure specification. 2048 */ 2049 #define DISCOV_LE_SCAN_WIN 0x12 2050 #define DISCOV_LE_SCAN_INT 0x12 2051 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 2052 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 2053 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 2054 #define DISCOV_BREDR_INQUIRY_LEN 0x08 2055 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 2056 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ 2057 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ 2058 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */ 2059 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */ 2060 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */ 2061 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */ 2062 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10) 2063 2064 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */ 2065 2066 void mgmt_fill_version_info(void *ver); 2067 int mgmt_new_settings(struct hci_dev *hdev); 2068 void mgmt_index_added(struct hci_dev *hdev); 2069 void mgmt_index_removed(struct hci_dev *hdev); 2070 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 2071 void mgmt_power_on(struct hci_dev *hdev, int err); 2072 void __mgmt_power_off(struct hci_dev *hdev); 2073 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 2074 bool persistent); 2075 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 2076 u8 *name, u8 name_len); 2077 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 2078 u8 link_type, u8 addr_type, u8 reason, 2079 bool mgmt_connected); 2080 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 2081 u8 link_type, u8 addr_type, u8 status); 2082 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2083 u8 addr_type, u8 status); 2084 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 2085 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2086 u8 status); 2087 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2088 u8 status); 2089 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2090 u8 link_type, u8 addr_type, u32 value, 2091 u8 confirm_hint); 2092 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2093 u8 link_type, u8 addr_type, u8 status); 2094 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2095 u8 link_type, u8 addr_type, u8 status); 2096 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2097 u8 link_type, u8 addr_type); 2098 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2099 u8 link_type, u8 addr_type, u8 status); 2100 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2101 u8 link_type, u8 addr_type, u8 status); 2102 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 2103 u8 link_type, u8 addr_type, u32 passkey, 2104 u8 entered); 2105 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 2106 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 2107 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 2108 u8 status); 2109 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 2110 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 2111 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 2112 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2113 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 2114 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len, 2115 u64 instant); 2116 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2117 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 2118 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 2119 void mgmt_suspending(struct hci_dev *hdev, u8 state); 2120 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr, 2121 u8 addr_type); 2122 bool mgmt_powering_down(struct hci_dev *hdev); 2123 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 2124 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 2125 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 2126 bool persistent); 2127 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 2128 u8 bdaddr_type, u8 store_hint, u16 min_interval, 2129 u16 max_interval, u16 latency, u16 timeout); 2130 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 2131 bool mgmt_get_connectable(struct hci_dev *hdev); 2132 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 2133 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 2134 u8 instance); 2135 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 2136 u8 instance); 2137 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); 2138 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 2139 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, 2140 bdaddr_t *bdaddr, u8 addr_type); 2141 2142 int hci_abort_conn(struct hci_conn *conn, u8 reason); 2143 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 2144 u16 to_multiplier); 2145 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 2146 __u8 ltk[16], __u8 key_size); 2147 2148 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 2149 u8 *bdaddr_type); 2150 2151 #define SCO_AIRMODE_MASK 0x0003 2152 #define SCO_AIRMODE_CVSD 0x0000 2153 #define SCO_AIRMODE_TRANSP 0x0003 2154 2155 #define LOCAL_CODEC_ACL_MASK BIT(0) 2156 #define LOCAL_CODEC_SCO_MASK BIT(1) 2157 2158 #define TRANSPORT_TYPE_MAX 0x04 2159 2160 #endif /* __HCI_CORE_H */ 2161