1 /* 2 BlueZ - Bluetooth protocol stack for Linux 3 Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved. 4 5 Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> 6 7 This program is free software; you can redistribute it and/or modify 8 it under the terms of the GNU General Public License version 2 as 9 published by the Free Software Foundation; 10 11 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 12 OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 13 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. 14 IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY 15 CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES 16 WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 17 ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 18 OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 19 20 ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, 21 COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS 22 SOFTWARE IS DISCLAIMED. 23 */ 24 25 #ifndef __HCI_CORE_H 26 #define __HCI_CORE_H 27 28 #include <linux/idr.h> 29 #include <linux/leds.h> 30 #include <linux/rculist.h> 31 32 #include <net/bluetooth/hci.h> 33 #include <net/bluetooth/hci_sync.h> 34 #include <net/bluetooth/hci_sock.h> 35 36 /* HCI priority */ 37 #define HCI_PRIO_MAX 7 38 39 /* HCI maximum id value */ 40 #define HCI_MAX_ID 10000 41 42 /* HCI Core structures */ 43 struct inquiry_data { 44 bdaddr_t bdaddr; 45 __u8 pscan_rep_mode; 46 __u8 pscan_period_mode; 47 __u8 pscan_mode; 48 __u8 dev_class[3]; 49 __le16 clock_offset; 50 __s8 rssi; 51 __u8 ssp_mode; 52 }; 53 54 struct inquiry_entry { 55 struct list_head all; /* inq_cache.all */ 56 struct list_head list; /* unknown or resolve */ 57 enum { 58 NAME_NOT_KNOWN, 59 NAME_NEEDED, 60 NAME_PENDING, 61 NAME_KNOWN, 62 } name_state; 63 __u32 timestamp; 64 struct inquiry_data data; 65 }; 66 67 struct discovery_state { 68 int type; 69 enum { 70 DISCOVERY_STOPPED, 71 DISCOVERY_STARTING, 72 DISCOVERY_FINDING, 73 DISCOVERY_RESOLVING, 74 DISCOVERY_STOPPING, 75 } state; 76 struct list_head all; /* All devices found during inquiry */ 77 struct list_head unknown; /* Name state not known */ 78 struct list_head resolve; /* Name needs to be resolved */ 79 __u32 timestamp; 80 bdaddr_t last_adv_addr; 81 u8 last_adv_addr_type; 82 s8 last_adv_rssi; 83 u32 last_adv_flags; 84 u8 last_adv_data[HCI_MAX_AD_LENGTH]; 85 u8 last_adv_data_len; 86 bool report_invalid_rssi; 87 bool result_filtering; 88 bool limited; 89 s8 rssi; 90 u16 uuid_count; 91 u8 (*uuids)[16]; 92 unsigned long scan_start; 93 unsigned long scan_duration; 94 unsigned long name_resolve_timeout; 95 }; 96 97 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */ 98 99 enum suspend_tasks { 100 SUSPEND_PAUSE_DISCOVERY, 101 SUSPEND_UNPAUSE_DISCOVERY, 102 103 SUSPEND_PAUSE_ADVERTISING, 104 SUSPEND_UNPAUSE_ADVERTISING, 105 106 SUSPEND_SCAN_DISABLE, 107 SUSPEND_SCAN_ENABLE, 108 SUSPEND_DISCONNECTING, 109 110 SUSPEND_POWERING_DOWN, 111 112 SUSPEND_PREPARE_NOTIFIER, 113 114 SUSPEND_SET_ADV_FILTER, 115 __SUSPEND_NUM_TASKS 116 }; 117 118 enum suspended_state { 119 BT_RUNNING = 0, 120 BT_SUSPEND_DISCONNECT, 121 BT_SUSPEND_CONFIGURE_WAKE, 122 }; 123 124 struct hci_conn_hash { 125 struct list_head list; 126 unsigned int acl_num; 127 unsigned int amp_num; 128 unsigned int sco_num; 129 unsigned int iso_num; 130 unsigned int le_num; 131 unsigned int le_num_peripheral; 132 }; 133 134 struct bdaddr_list { 135 struct list_head list; 136 bdaddr_t bdaddr; 137 u8 bdaddr_type; 138 }; 139 140 struct codec_list { 141 struct list_head list; 142 u8 id; 143 __u16 cid; 144 __u16 vid; 145 u8 transport; 146 u8 num_caps; 147 u32 len; 148 struct hci_codec_caps caps[]; 149 }; 150 151 struct bdaddr_list_with_irk { 152 struct list_head list; 153 bdaddr_t bdaddr; 154 u8 bdaddr_type; 155 u8 peer_irk[16]; 156 u8 local_irk[16]; 157 }; 158 159 /* Bitmask of connection flags */ 160 enum hci_conn_flags { 161 HCI_CONN_FLAG_REMOTE_WAKEUP = 1, 162 HCI_CONN_FLAG_DEVICE_PRIVACY = 2, 163 }; 164 typedef u8 hci_conn_flags_t; 165 166 struct bdaddr_list_with_flags { 167 struct list_head list; 168 bdaddr_t bdaddr; 169 u8 bdaddr_type; 170 hci_conn_flags_t flags; 171 }; 172 173 struct bt_uuid { 174 struct list_head list; 175 u8 uuid[16]; 176 u8 size; 177 u8 svc_hint; 178 }; 179 180 struct blocked_key { 181 struct list_head list; 182 struct rcu_head rcu; 183 u8 type; 184 u8 val[16]; 185 }; 186 187 struct smp_csrk { 188 bdaddr_t bdaddr; 189 u8 bdaddr_type; 190 u8 type; 191 u8 val[16]; 192 }; 193 194 struct smp_ltk { 195 struct list_head list; 196 struct rcu_head rcu; 197 bdaddr_t bdaddr; 198 u8 bdaddr_type; 199 u8 authenticated; 200 u8 type; 201 u8 enc_size; 202 __le16 ediv; 203 __le64 rand; 204 u8 val[16]; 205 }; 206 207 struct smp_irk { 208 struct list_head list; 209 struct rcu_head rcu; 210 bdaddr_t rpa; 211 bdaddr_t bdaddr; 212 u8 addr_type; 213 u8 val[16]; 214 }; 215 216 struct link_key { 217 struct list_head list; 218 struct rcu_head rcu; 219 bdaddr_t bdaddr; 220 u8 type; 221 u8 val[HCI_LINK_KEY_SIZE]; 222 u8 pin_len; 223 }; 224 225 struct oob_data { 226 struct list_head list; 227 bdaddr_t bdaddr; 228 u8 bdaddr_type; 229 u8 present; 230 u8 hash192[16]; 231 u8 rand192[16]; 232 u8 hash256[16]; 233 u8 rand256[16]; 234 }; 235 236 struct adv_info { 237 struct list_head list; 238 bool enabled; 239 bool pending; 240 bool periodic; 241 __u8 mesh; 242 __u8 instance; 243 __u32 flags; 244 __u16 timeout; 245 __u16 remaining_time; 246 __u16 duration; 247 __u16 adv_data_len; 248 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 249 bool adv_data_changed; 250 __u16 scan_rsp_len; 251 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 252 bool scan_rsp_changed; 253 __u16 per_adv_data_len; 254 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 255 __s8 tx_power; 256 __u32 min_interval; 257 __u32 max_interval; 258 bdaddr_t random_addr; 259 bool rpa_expired; 260 struct delayed_work rpa_expired_cb; 261 }; 262 263 #define HCI_MAX_ADV_INSTANCES 5 264 #define HCI_DEFAULT_ADV_DURATION 2 265 266 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F 267 268 #define DATA_CMP(_d1, _l1, _d2, _l2) \ 269 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2) 270 271 #define ADV_DATA_CMP(_adv, _data, _len) \ 272 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len) 273 274 #define SCAN_RSP_CMP(_adv, _data, _len) \ 275 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len) 276 277 struct monitored_device { 278 struct list_head list; 279 280 bdaddr_t bdaddr; 281 __u8 addr_type; 282 __u16 handle; 283 bool notified; 284 }; 285 286 struct adv_pattern { 287 struct list_head list; 288 __u8 ad_type; 289 __u8 offset; 290 __u8 length; 291 __u8 value[HCI_MAX_AD_LENGTH]; 292 }; 293 294 struct adv_rssi_thresholds { 295 __s8 low_threshold; 296 __s8 high_threshold; 297 __u16 low_threshold_timeout; 298 __u16 high_threshold_timeout; 299 __u8 sampling_period; 300 }; 301 302 struct adv_monitor { 303 struct list_head patterns; 304 struct adv_rssi_thresholds rssi; 305 __u16 handle; 306 307 enum { 308 ADV_MONITOR_STATE_NOT_REGISTERED, 309 ADV_MONITOR_STATE_REGISTERED, 310 ADV_MONITOR_STATE_OFFLOADED 311 } state; 312 }; 313 314 #define HCI_MIN_ADV_MONITOR_HANDLE 1 315 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32 316 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16 317 #define HCI_ADV_MONITOR_EXT_NONE 1 318 #define HCI_ADV_MONITOR_EXT_MSFT 2 319 320 #define HCI_MAX_SHORT_NAME_LENGTH 10 321 322 #define HCI_CONN_HANDLE_UNSET 0xffff 323 #define HCI_CONN_HANDLE_MAX 0x0eff 324 325 /* Min encryption key size to match with SMP */ 326 #define HCI_MIN_ENC_KEY_SIZE 7 327 328 /* Default LE RPA expiry time, 15 minutes */ 329 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 330 331 /* Default min/max age of connection information (1s/3s) */ 332 #define DEFAULT_CONN_INFO_MIN_AGE 1000 333 #define DEFAULT_CONN_INFO_MAX_AGE 3000 334 /* Default authenticated payload timeout 30s */ 335 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8 336 337 struct amp_assoc { 338 __u16 len; 339 __u16 offset; 340 __u16 rem_len; 341 __u16 len_so_far; 342 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 343 }; 344 345 #define HCI_MAX_PAGES 3 346 347 struct hci_dev { 348 struct list_head list; 349 struct mutex lock; 350 351 char name[8]; 352 unsigned long flags; 353 __u16 id; 354 __u8 bus; 355 __u8 dev_type; 356 bdaddr_t bdaddr; 357 bdaddr_t setup_addr; 358 bdaddr_t public_addr; 359 bdaddr_t random_addr; 360 bdaddr_t static_addr; 361 __u8 adv_addr_type; 362 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 363 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 364 __u8 eir[HCI_MAX_EIR_LENGTH]; 365 __u16 appearance; 366 __u8 dev_class[3]; 367 __u8 major_class; 368 __u8 minor_class; 369 __u8 max_page; 370 __u8 features[HCI_MAX_PAGES][8]; 371 __u8 le_features[8]; 372 __u8 le_accept_list_size; 373 __u8 le_resolv_list_size; 374 __u8 le_num_of_adv_sets; 375 __u8 le_states[8]; 376 __u8 mesh_ad_types[16]; 377 __u8 mesh_send_ref; 378 __u8 commands[64]; 379 __u8 hci_ver; 380 __u16 hci_rev; 381 __u8 lmp_ver; 382 __u16 manufacturer; 383 __u16 lmp_subver; 384 __u16 voice_setting; 385 __u8 num_iac; 386 __u16 stored_max_keys; 387 __u16 stored_num_keys; 388 __u8 io_capability; 389 __s8 inq_tx_power; 390 __u8 err_data_reporting; 391 __u16 page_scan_interval; 392 __u16 page_scan_window; 393 __u8 page_scan_type; 394 __u8 le_adv_channel_map; 395 __u16 le_adv_min_interval; 396 __u16 le_adv_max_interval; 397 __u8 le_scan_type; 398 __u16 le_scan_interval; 399 __u16 le_scan_window; 400 __u16 le_scan_int_suspend; 401 __u16 le_scan_window_suspend; 402 __u16 le_scan_int_discovery; 403 __u16 le_scan_window_discovery; 404 __u16 le_scan_int_adv_monitor; 405 __u16 le_scan_window_adv_monitor; 406 __u16 le_scan_int_connect; 407 __u16 le_scan_window_connect; 408 __u16 le_conn_min_interval; 409 __u16 le_conn_max_interval; 410 __u16 le_conn_latency; 411 __u16 le_supv_timeout; 412 __u16 le_def_tx_len; 413 __u16 le_def_tx_time; 414 __u16 le_max_tx_len; 415 __u16 le_max_tx_time; 416 __u16 le_max_rx_len; 417 __u16 le_max_rx_time; 418 __u8 le_max_key_size; 419 __u8 le_min_key_size; 420 __u16 discov_interleaved_timeout; 421 __u16 conn_info_min_age; 422 __u16 conn_info_max_age; 423 __u16 auth_payload_timeout; 424 __u8 min_enc_key_size; 425 __u8 max_enc_key_size; 426 __u8 pairing_opts; 427 __u8 ssp_debug_mode; 428 __u8 hw_error_code; 429 __u32 clock; 430 __u16 advmon_allowlist_duration; 431 __u16 advmon_no_filter_duration; 432 __u8 enable_advmon_interleave_scan; 433 434 __u16 devid_source; 435 __u16 devid_vendor; 436 __u16 devid_product; 437 __u16 devid_version; 438 439 __u8 def_page_scan_type; 440 __u16 def_page_scan_int; 441 __u16 def_page_scan_window; 442 __u8 def_inq_scan_type; 443 __u16 def_inq_scan_int; 444 __u16 def_inq_scan_window; 445 __u16 def_br_lsto; 446 __u16 def_page_timeout; 447 __u16 def_multi_adv_rotation_duration; 448 __u16 def_le_autoconnect_timeout; 449 __s8 min_le_tx_power; 450 __s8 max_le_tx_power; 451 452 __u16 pkt_type; 453 __u16 esco_type; 454 __u16 link_policy; 455 __u16 link_mode; 456 457 __u32 idle_timeout; 458 __u16 sniff_min_interval; 459 __u16 sniff_max_interval; 460 461 __u8 amp_status; 462 __u32 amp_total_bw; 463 __u32 amp_max_bw; 464 __u32 amp_min_latency; 465 __u32 amp_max_pdu; 466 __u8 amp_type; 467 __u16 amp_pal_cap; 468 __u16 amp_assoc_size; 469 __u32 amp_max_flush_to; 470 __u32 amp_be_flush_to; 471 472 struct amp_assoc loc_assoc; 473 474 __u8 flow_ctl_mode; 475 476 unsigned int auto_accept_delay; 477 478 unsigned long quirks; 479 480 atomic_t cmd_cnt; 481 unsigned int acl_cnt; 482 unsigned int sco_cnt; 483 unsigned int le_cnt; 484 unsigned int iso_cnt; 485 486 unsigned int acl_mtu; 487 unsigned int sco_mtu; 488 unsigned int le_mtu; 489 unsigned int iso_mtu; 490 unsigned int acl_pkts; 491 unsigned int sco_pkts; 492 unsigned int le_pkts; 493 unsigned int iso_pkts; 494 495 __u16 block_len; 496 __u16 block_mtu; 497 __u16 num_blocks; 498 __u16 block_cnt; 499 500 unsigned long acl_last_tx; 501 unsigned long sco_last_tx; 502 unsigned long le_last_tx; 503 504 __u8 le_tx_def_phys; 505 __u8 le_rx_def_phys; 506 507 struct workqueue_struct *workqueue; 508 struct workqueue_struct *req_workqueue; 509 510 struct work_struct power_on; 511 struct delayed_work power_off; 512 struct work_struct error_reset; 513 struct work_struct cmd_sync_work; 514 struct list_head cmd_sync_work_list; 515 struct mutex cmd_sync_work_lock; 516 struct work_struct cmd_sync_cancel_work; 517 struct work_struct reenable_adv_work; 518 519 __u16 discov_timeout; 520 struct delayed_work discov_off; 521 522 struct delayed_work service_cache; 523 524 struct delayed_work cmd_timer; 525 struct delayed_work ncmd_timer; 526 527 struct work_struct rx_work; 528 struct work_struct cmd_work; 529 struct work_struct tx_work; 530 531 struct delayed_work le_scan_disable; 532 struct delayed_work le_scan_restart; 533 534 struct sk_buff_head rx_q; 535 struct sk_buff_head raw_q; 536 struct sk_buff_head cmd_q; 537 538 struct sk_buff *sent_cmd; 539 struct sk_buff *recv_event; 540 541 struct mutex req_lock; 542 wait_queue_head_t req_wait_q; 543 __u32 req_status; 544 __u32 req_result; 545 struct sk_buff *req_skb; 546 547 void *smp_data; 548 void *smp_bredr_data; 549 550 struct discovery_state discovery; 551 552 int discovery_old_state; 553 bool discovery_paused; 554 int advertising_old_state; 555 bool advertising_paused; 556 557 struct notifier_block suspend_notifier; 558 enum suspended_state suspend_state_next; 559 enum suspended_state suspend_state; 560 bool scanning_paused; 561 bool suspended; 562 u8 wake_reason; 563 bdaddr_t wake_addr; 564 u8 wake_addr_type; 565 566 struct hci_conn_hash conn_hash; 567 568 struct list_head mesh_pending; 569 struct list_head mgmt_pending; 570 struct list_head reject_list; 571 struct list_head accept_list; 572 struct list_head uuids; 573 struct list_head link_keys; 574 struct list_head long_term_keys; 575 struct list_head identity_resolving_keys; 576 struct list_head remote_oob_data; 577 struct list_head le_accept_list; 578 struct list_head le_resolv_list; 579 struct list_head le_conn_params; 580 struct list_head pend_le_conns; 581 struct list_head pend_le_reports; 582 struct list_head blocked_keys; 583 struct list_head local_codecs; 584 585 struct hci_dev_stats stat; 586 587 atomic_t promisc; 588 589 const char *hw_info; 590 const char *fw_info; 591 struct dentry *debugfs; 592 593 struct device dev; 594 595 struct rfkill *rfkill; 596 597 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 598 hci_conn_flags_t conn_flags; 599 600 __s8 adv_tx_power; 601 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 602 __u8 adv_data_len; 603 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 604 __u8 scan_rsp_data_len; 605 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 606 __u8 per_adv_data_len; 607 608 struct list_head adv_instances; 609 unsigned int adv_instance_cnt; 610 __u8 cur_adv_instance; 611 __u16 adv_instance_timeout; 612 struct delayed_work adv_instance_expire; 613 614 struct idr adv_monitors_idr; 615 unsigned int adv_monitors_cnt; 616 617 __u8 irk[16]; 618 __u32 rpa_timeout; 619 struct delayed_work rpa_expired; 620 bdaddr_t rpa; 621 622 struct delayed_work mesh_send_done; 623 624 enum { 625 INTERLEAVE_SCAN_NONE, 626 INTERLEAVE_SCAN_NO_FILTER, 627 INTERLEAVE_SCAN_ALLOWLIST 628 } interleave_scan_state; 629 630 struct delayed_work interleave_scan; 631 632 struct list_head monitored_devices; 633 bool advmon_pend_notify; 634 635 #if IS_ENABLED(CONFIG_BT_LEDS) 636 struct led_trigger *power_led; 637 #endif 638 639 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 640 __u16 msft_opcode; 641 void *msft_data; 642 bool msft_curve_validity; 643 #endif 644 645 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 646 bool aosp_capable; 647 bool aosp_quality_report; 648 #endif 649 650 int (*open)(struct hci_dev *hdev); 651 int (*close)(struct hci_dev *hdev); 652 int (*flush)(struct hci_dev *hdev); 653 int (*setup)(struct hci_dev *hdev); 654 int (*shutdown)(struct hci_dev *hdev); 655 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 656 void (*notify)(struct hci_dev *hdev, unsigned int evt); 657 void (*hw_error)(struct hci_dev *hdev, u8 code); 658 int (*post_init)(struct hci_dev *hdev); 659 int (*set_diag)(struct hci_dev *hdev, bool enable); 660 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 661 void (*cmd_timeout)(struct hci_dev *hdev); 662 bool (*wakeup)(struct hci_dev *hdev); 663 int (*set_quality_report)(struct hci_dev *hdev, bool enable); 664 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path); 665 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type, 666 struct bt_codec *codec, __u8 *vnd_len, 667 __u8 **vnd_data); 668 }; 669 670 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 671 672 enum conn_reasons { 673 CONN_REASON_PAIR_DEVICE, 674 CONN_REASON_L2CAP_CHAN, 675 CONN_REASON_SCO_CONNECT, 676 CONN_REASON_ISO_CONNECT, 677 }; 678 679 struct hci_conn { 680 struct list_head list; 681 682 atomic_t refcnt; 683 684 bdaddr_t dst; 685 __u8 dst_type; 686 bdaddr_t src; 687 __u8 src_type; 688 bdaddr_t init_addr; 689 __u8 init_addr_type; 690 bdaddr_t resp_addr; 691 __u8 resp_addr_type; 692 __u8 adv_instance; 693 __u16 handle; 694 __u16 sync_handle; 695 __u16 state; 696 __u8 mode; 697 __u8 type; 698 __u8 role; 699 bool out; 700 __u8 attempt; 701 __u8 dev_class[3]; 702 __u8 features[HCI_MAX_PAGES][8]; 703 __u16 pkt_type; 704 __u16 link_policy; 705 __u8 key_type; 706 __u8 auth_type; 707 __u8 sec_level; 708 __u8 pending_sec_level; 709 __u8 pin_length; 710 __u8 enc_key_size; 711 __u8 io_capability; 712 __u32 passkey_notify; 713 __u8 passkey_entered; 714 __u16 disc_timeout; 715 __u16 conn_timeout; 716 __u16 setting; 717 __u16 auth_payload_timeout; 718 __u16 le_conn_min_interval; 719 __u16 le_conn_max_interval; 720 __u16 le_conn_interval; 721 __u16 le_conn_latency; 722 __u16 le_supv_timeout; 723 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 724 __u8 le_adv_data_len; 725 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH]; 726 __u8 le_per_adv_data_len; 727 __u8 le_tx_phy; 728 __u8 le_rx_phy; 729 __s8 rssi; 730 __s8 tx_power; 731 __s8 max_tx_power; 732 struct bt_iso_qos iso_qos; 733 unsigned long flags; 734 735 enum conn_reasons conn_reason; 736 737 __u32 clock; 738 __u16 clock_accuracy; 739 740 unsigned long conn_info_timestamp; 741 742 __u8 remote_cap; 743 __u8 remote_auth; 744 __u8 remote_id; 745 746 unsigned int sent; 747 748 struct sk_buff_head data_q; 749 struct list_head chan_list; 750 751 struct delayed_work disc_work; 752 struct delayed_work auto_accept_work; 753 struct delayed_work idle_work; 754 struct delayed_work le_conn_timeout; 755 struct work_struct le_scan_cleanup; 756 757 struct device dev; 758 struct dentry *debugfs; 759 760 struct hci_dev *hdev; 761 void *l2cap_data; 762 void *sco_data; 763 void *iso_data; 764 struct amp_mgr *amp_mgr; 765 766 struct hci_conn *link; 767 struct bt_codec codec; 768 769 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 770 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 771 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 772 773 void (*cleanup)(struct hci_conn *conn); 774 }; 775 776 struct hci_chan { 777 struct list_head list; 778 __u16 handle; 779 struct hci_conn *conn; 780 struct sk_buff_head data_q; 781 unsigned int sent; 782 __u8 state; 783 bool amp; 784 }; 785 786 struct hci_conn_params { 787 struct list_head list; 788 struct list_head action; 789 790 bdaddr_t addr; 791 u8 addr_type; 792 793 u16 conn_min_interval; 794 u16 conn_max_interval; 795 u16 conn_latency; 796 u16 supervision_timeout; 797 798 enum { 799 HCI_AUTO_CONN_DISABLED, 800 HCI_AUTO_CONN_REPORT, 801 HCI_AUTO_CONN_DIRECT, 802 HCI_AUTO_CONN_ALWAYS, 803 HCI_AUTO_CONN_LINK_LOSS, 804 HCI_AUTO_CONN_EXPLICIT, 805 } auto_connect; 806 807 struct hci_conn *conn; 808 bool explicit_connect; 809 hci_conn_flags_t flags; 810 u8 privacy_mode; 811 }; 812 813 extern struct list_head hci_dev_list; 814 extern struct list_head hci_cb_list; 815 extern rwlock_t hci_dev_list_lock; 816 extern struct mutex hci_cb_list_lock; 817 818 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 819 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 820 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 821 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 822 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 823 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 824 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 825 826 #define hci_dev_clear_volatile_flags(hdev) \ 827 do { \ 828 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 829 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 830 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\ 831 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 832 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \ 833 } while (0) 834 835 #define hci_dev_le_state_simultaneous(hdev) \ 836 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \ 837 (hdev->le_states[4] & 0x08) && /* Central */ \ 838 (hdev->le_states[4] & 0x40) && /* Peripheral */ \ 839 (hdev->le_states[3] & 0x10)) /* Simultaneous */ 840 841 /* ----- HCI interface to upper protocols ----- */ 842 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 843 int l2cap_disconn_ind(struct hci_conn *hcon); 844 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 845 846 #if IS_ENABLED(CONFIG_BT_BREDR) 847 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 848 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 849 #else 850 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 851 __u8 *flags) 852 { 853 return 0; 854 } 855 856 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 857 { 858 } 859 #endif 860 861 #if IS_ENABLED(CONFIG_BT_LE) 862 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 863 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 864 #else 865 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 866 __u8 *flags) 867 { 868 return 0; 869 } 870 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, 871 u16 flags) 872 { 873 } 874 #endif 875 876 /* ----- Inquiry cache ----- */ 877 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 878 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 879 880 static inline void discovery_init(struct hci_dev *hdev) 881 { 882 hdev->discovery.state = DISCOVERY_STOPPED; 883 INIT_LIST_HEAD(&hdev->discovery.all); 884 INIT_LIST_HEAD(&hdev->discovery.unknown); 885 INIT_LIST_HEAD(&hdev->discovery.resolve); 886 hdev->discovery.report_invalid_rssi = true; 887 hdev->discovery.rssi = HCI_RSSI_INVALID; 888 } 889 890 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 891 { 892 hdev->discovery.result_filtering = false; 893 hdev->discovery.report_invalid_rssi = true; 894 hdev->discovery.rssi = HCI_RSSI_INVALID; 895 hdev->discovery.uuid_count = 0; 896 kfree(hdev->discovery.uuids); 897 hdev->discovery.uuids = NULL; 898 hdev->discovery.scan_start = 0; 899 hdev->discovery.scan_duration = 0; 900 } 901 902 bool hci_discovery_active(struct hci_dev *hdev); 903 904 void hci_discovery_set_state(struct hci_dev *hdev, int state); 905 906 static inline int inquiry_cache_empty(struct hci_dev *hdev) 907 { 908 return list_empty(&hdev->discovery.all); 909 } 910 911 static inline long inquiry_cache_age(struct hci_dev *hdev) 912 { 913 struct discovery_state *c = &hdev->discovery; 914 return jiffies - c->timestamp; 915 } 916 917 static inline long inquiry_entry_age(struct inquiry_entry *e) 918 { 919 return jiffies - e->timestamp; 920 } 921 922 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 923 bdaddr_t *bdaddr); 924 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 925 bdaddr_t *bdaddr); 926 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 927 bdaddr_t *bdaddr, 928 int state); 929 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 930 struct inquiry_entry *ie); 931 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 932 bool name_known); 933 void hci_inquiry_cache_flush(struct hci_dev *hdev); 934 935 /* ----- HCI Connections ----- */ 936 enum { 937 HCI_CONN_AUTH_PEND, 938 HCI_CONN_REAUTH_PEND, 939 HCI_CONN_ENCRYPT_PEND, 940 HCI_CONN_RSWITCH_PEND, 941 HCI_CONN_MODE_CHANGE_PEND, 942 HCI_CONN_SCO_SETUP_PEND, 943 HCI_CONN_MGMT_CONNECTED, 944 HCI_CONN_SSP_ENABLED, 945 HCI_CONN_SC_ENABLED, 946 HCI_CONN_AES_CCM, 947 HCI_CONN_POWER_SAVE, 948 HCI_CONN_FLUSH_KEY, 949 HCI_CONN_ENCRYPT, 950 HCI_CONN_AUTH, 951 HCI_CONN_SECURE, 952 HCI_CONN_FIPS, 953 HCI_CONN_STK_ENCRYPT, 954 HCI_CONN_AUTH_INITIATOR, 955 HCI_CONN_DROP, 956 HCI_CONN_PARAM_REMOVAL_PEND, 957 HCI_CONN_NEW_LINK_KEY, 958 HCI_CONN_SCANNING, 959 HCI_CONN_AUTH_FAILURE, 960 HCI_CONN_PER_ADV, 961 }; 962 963 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 964 { 965 struct hci_dev *hdev = conn->hdev; 966 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 967 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 968 } 969 970 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 971 { 972 struct hci_dev *hdev = conn->hdev; 973 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 974 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 975 } 976 977 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 978 { 979 struct hci_conn_hash *h = &hdev->conn_hash; 980 list_add_rcu(&c->list, &h->list); 981 switch (c->type) { 982 case ACL_LINK: 983 h->acl_num++; 984 break; 985 case AMP_LINK: 986 h->amp_num++; 987 break; 988 case LE_LINK: 989 h->le_num++; 990 if (c->role == HCI_ROLE_SLAVE) 991 h->le_num_peripheral++; 992 break; 993 case SCO_LINK: 994 case ESCO_LINK: 995 h->sco_num++; 996 break; 997 case ISO_LINK: 998 h->iso_num++; 999 break; 1000 } 1001 } 1002 1003 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 1004 { 1005 struct hci_conn_hash *h = &hdev->conn_hash; 1006 1007 list_del_rcu(&c->list); 1008 synchronize_rcu(); 1009 1010 switch (c->type) { 1011 case ACL_LINK: 1012 h->acl_num--; 1013 break; 1014 case AMP_LINK: 1015 h->amp_num--; 1016 break; 1017 case LE_LINK: 1018 h->le_num--; 1019 if (c->role == HCI_ROLE_SLAVE) 1020 h->le_num_peripheral--; 1021 break; 1022 case SCO_LINK: 1023 case ESCO_LINK: 1024 h->sco_num--; 1025 break; 1026 case ISO_LINK: 1027 h->iso_num--; 1028 break; 1029 } 1030 } 1031 1032 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 1033 { 1034 struct hci_conn_hash *h = &hdev->conn_hash; 1035 switch (type) { 1036 case ACL_LINK: 1037 return h->acl_num; 1038 case AMP_LINK: 1039 return h->amp_num; 1040 case LE_LINK: 1041 return h->le_num; 1042 case SCO_LINK: 1043 case ESCO_LINK: 1044 return h->sco_num; 1045 case ISO_LINK: 1046 return h->iso_num; 1047 default: 1048 return 0; 1049 } 1050 } 1051 1052 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 1053 { 1054 struct hci_conn_hash *c = &hdev->conn_hash; 1055 1056 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num; 1057 } 1058 1059 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 1060 { 1061 struct hci_conn_hash *h = &hdev->conn_hash; 1062 struct hci_conn *c; 1063 __u8 type = INVALID_LINK; 1064 1065 rcu_read_lock(); 1066 1067 list_for_each_entry_rcu(c, &h->list, list) { 1068 if (c->handle == handle) { 1069 type = c->type; 1070 break; 1071 } 1072 } 1073 1074 rcu_read_unlock(); 1075 1076 return type; 1077 } 1078 1079 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev, 1080 bdaddr_t *ba, 1081 __u8 big, __u8 bis) 1082 { 1083 struct hci_conn_hash *h = &hdev->conn_hash; 1084 struct hci_conn *c; 1085 1086 rcu_read_lock(); 1087 1088 list_for_each_entry_rcu(c, &h->list, list) { 1089 if (bacmp(&c->dst, ba) || c->type != ISO_LINK) 1090 continue; 1091 1092 if (c->iso_qos.big == big && c->iso_qos.bis == bis) { 1093 rcu_read_unlock(); 1094 return c; 1095 } 1096 } 1097 rcu_read_unlock(); 1098 1099 return NULL; 1100 } 1101 1102 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 1103 __u16 handle) 1104 { 1105 struct hci_conn_hash *h = &hdev->conn_hash; 1106 struct hci_conn *c; 1107 1108 rcu_read_lock(); 1109 1110 list_for_each_entry_rcu(c, &h->list, list) { 1111 if (c->handle == handle) { 1112 rcu_read_unlock(); 1113 return c; 1114 } 1115 } 1116 rcu_read_unlock(); 1117 1118 return NULL; 1119 } 1120 1121 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 1122 __u8 type, bdaddr_t *ba) 1123 { 1124 struct hci_conn_hash *h = &hdev->conn_hash; 1125 struct hci_conn *c; 1126 1127 rcu_read_lock(); 1128 1129 list_for_each_entry_rcu(c, &h->list, list) { 1130 if (c->type == type && !bacmp(&c->dst, ba)) { 1131 rcu_read_unlock(); 1132 return c; 1133 } 1134 } 1135 1136 rcu_read_unlock(); 1137 1138 return NULL; 1139 } 1140 1141 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 1142 bdaddr_t *ba, 1143 __u8 ba_type) 1144 { 1145 struct hci_conn_hash *h = &hdev->conn_hash; 1146 struct hci_conn *c; 1147 1148 rcu_read_lock(); 1149 1150 list_for_each_entry_rcu(c, &h->list, list) { 1151 if (c->type != LE_LINK) 1152 continue; 1153 1154 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1155 rcu_read_unlock(); 1156 return c; 1157 } 1158 } 1159 1160 rcu_read_unlock(); 1161 1162 return NULL; 1163 } 1164 1165 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev, 1166 bdaddr_t *ba, 1167 __u8 ba_type) 1168 { 1169 struct hci_conn_hash *h = &hdev->conn_hash; 1170 struct hci_conn *c; 1171 1172 rcu_read_lock(); 1173 1174 list_for_each_entry_rcu(c, &h->list, list) { 1175 if (c->type != ISO_LINK) 1176 continue; 1177 1178 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1179 rcu_read_unlock(); 1180 return c; 1181 } 1182 } 1183 1184 rcu_read_unlock(); 1185 1186 return NULL; 1187 } 1188 1189 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev, 1190 __u8 handle) 1191 { 1192 struct hci_conn_hash *h = &hdev->conn_hash; 1193 struct hci_conn *c; 1194 1195 rcu_read_lock(); 1196 1197 list_for_each_entry_rcu(c, &h->list, list) { 1198 if (c->type != ISO_LINK) 1199 continue; 1200 1201 if (handle == c->iso_qos.cig) { 1202 rcu_read_unlock(); 1203 return c; 1204 } 1205 } 1206 1207 rcu_read_unlock(); 1208 1209 return NULL; 1210 } 1211 1212 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev, 1213 __u8 handle) 1214 { 1215 struct hci_conn_hash *h = &hdev->conn_hash; 1216 struct hci_conn *c; 1217 1218 rcu_read_lock(); 1219 1220 list_for_each_entry_rcu(c, &h->list, list) { 1221 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK) 1222 continue; 1223 1224 if (handle == c->iso_qos.big) { 1225 rcu_read_unlock(); 1226 return c; 1227 } 1228 } 1229 1230 rcu_read_unlock(); 1231 1232 return NULL; 1233 } 1234 1235 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 1236 __u8 type, __u16 state) 1237 { 1238 struct hci_conn_hash *h = &hdev->conn_hash; 1239 struct hci_conn *c; 1240 1241 rcu_read_lock(); 1242 1243 list_for_each_entry_rcu(c, &h->list, list) { 1244 if (c->type == type && c->state == state) { 1245 rcu_read_unlock(); 1246 return c; 1247 } 1248 } 1249 1250 rcu_read_unlock(); 1251 1252 return NULL; 1253 } 1254 1255 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data); 1256 static inline void hci_conn_hash_list_state(struct hci_dev *hdev, 1257 hci_conn_func_t func, __u8 type, 1258 __u16 state, void *data) 1259 { 1260 struct hci_conn_hash *h = &hdev->conn_hash; 1261 struct hci_conn *c; 1262 1263 if (!func) 1264 return; 1265 1266 rcu_read_lock(); 1267 1268 list_for_each_entry_rcu(c, &h->list, list) { 1269 if (c->type == type && c->state == state) 1270 func(c, data); 1271 } 1272 1273 rcu_read_unlock(); 1274 } 1275 1276 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 1277 { 1278 struct hci_conn_hash *h = &hdev->conn_hash; 1279 struct hci_conn *c; 1280 1281 rcu_read_lock(); 1282 1283 list_for_each_entry_rcu(c, &h->list, list) { 1284 if (c->type == LE_LINK && c->state == BT_CONNECT && 1285 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 1286 rcu_read_unlock(); 1287 return c; 1288 } 1289 } 1290 1291 rcu_read_unlock(); 1292 1293 return NULL; 1294 } 1295 1296 int hci_disconnect(struct hci_conn *conn, __u8 reason); 1297 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 1298 void hci_sco_setup(struct hci_conn *conn, __u8 status); 1299 bool hci_iso_setup_path(struct hci_conn *conn); 1300 int hci_le_create_cis(struct hci_conn *conn); 1301 1302 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 1303 u8 role); 1304 int hci_conn_del(struct hci_conn *conn); 1305 void hci_conn_hash_flush(struct hci_dev *hdev); 1306 void hci_conn_check_pending(struct hci_dev *hdev); 1307 1308 struct hci_chan *hci_chan_create(struct hci_conn *conn); 1309 void hci_chan_del(struct hci_chan *chan); 1310 void hci_chan_list_flush(struct hci_conn *conn); 1311 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 1312 1313 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 1314 u8 dst_type, u8 sec_level, 1315 u16 conn_timeout, 1316 enum conn_reasons conn_reason); 1317 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 1318 u8 dst_type, bool dst_resolved, u8 sec_level, 1319 u16 conn_timeout, u8 role); 1320 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 1321 u8 sec_level, u8 auth_type, 1322 enum conn_reasons conn_reason); 1323 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 1324 __u16 setting, struct bt_codec *codec); 1325 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, 1326 __u8 dst_type, struct bt_iso_qos *qos); 1327 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, 1328 __u8 dst_type, struct bt_iso_qos *qos); 1329 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, 1330 __u8 dst_type, struct bt_iso_qos *qos, 1331 __u8 data_len, __u8 *data); 1332 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, 1333 __u8 sid); 1334 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos, 1335 __u16 sync_handle, __u8 num_bis, __u8 bis[]); 1336 int hci_conn_check_link_mode(struct hci_conn *conn); 1337 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 1338 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 1339 bool initiator); 1340 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 1341 1342 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 1343 1344 void hci_conn_failed(struct hci_conn *conn, u8 status); 1345 1346 /* 1347 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 1348 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 1349 * working or anything else. They just guarantee that the object is available 1350 * and can be dereferenced. So you can use its locks, local variables and any 1351 * other constant data. 1352 * Before accessing runtime data, you _must_ lock the object and then check that 1353 * it is still running. As soon as you release the locks, the connection might 1354 * get dropped, though. 1355 * 1356 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 1357 * how long the underlying connection is held. So every channel that runs on the 1358 * hci_conn object calls this to prevent the connection from disappearing. As 1359 * long as you hold a device, you must also guarantee that you have a valid 1360 * reference to the device via hci_conn_get() (or the initial reference from 1361 * hci_conn_add()). 1362 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 1363 * break because nobody cares for that. But this means, we cannot use 1364 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 1365 */ 1366 1367 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 1368 { 1369 get_device(&conn->dev); 1370 return conn; 1371 } 1372 1373 static inline void hci_conn_put(struct hci_conn *conn) 1374 { 1375 put_device(&conn->dev); 1376 } 1377 1378 static inline void hci_conn_hold(struct hci_conn *conn) 1379 { 1380 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1381 1382 atomic_inc(&conn->refcnt); 1383 cancel_delayed_work(&conn->disc_work); 1384 } 1385 1386 static inline void hci_conn_drop(struct hci_conn *conn) 1387 { 1388 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1389 1390 if (atomic_dec_and_test(&conn->refcnt)) { 1391 unsigned long timeo; 1392 1393 switch (conn->type) { 1394 case ACL_LINK: 1395 case LE_LINK: 1396 cancel_delayed_work(&conn->idle_work); 1397 if (conn->state == BT_CONNECTED) { 1398 timeo = conn->disc_timeout; 1399 if (!conn->out) 1400 timeo *= 2; 1401 } else { 1402 timeo = 0; 1403 } 1404 break; 1405 1406 case AMP_LINK: 1407 timeo = conn->disc_timeout; 1408 break; 1409 1410 default: 1411 timeo = 0; 1412 break; 1413 } 1414 1415 cancel_delayed_work(&conn->disc_work); 1416 queue_delayed_work(conn->hdev->workqueue, 1417 &conn->disc_work, timeo); 1418 } 1419 } 1420 1421 /* ----- HCI Devices ----- */ 1422 static inline void hci_dev_put(struct hci_dev *d) 1423 { 1424 BT_DBG("%s orig refcnt %d", d->name, 1425 kref_read(&d->dev.kobj.kref)); 1426 1427 put_device(&d->dev); 1428 } 1429 1430 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1431 { 1432 BT_DBG("%s orig refcnt %d", d->name, 1433 kref_read(&d->dev.kobj.kref)); 1434 1435 get_device(&d->dev); 1436 return d; 1437 } 1438 1439 #define hci_dev_lock(d) mutex_lock(&d->lock) 1440 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1441 1442 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1443 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1444 1445 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1446 { 1447 return dev_get_drvdata(&hdev->dev); 1448 } 1449 1450 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1451 { 1452 dev_set_drvdata(&hdev->dev, data); 1453 } 1454 1455 static inline void *hci_get_priv(struct hci_dev *hdev) 1456 { 1457 return (char *)hdev + sizeof(*hdev); 1458 } 1459 1460 struct hci_dev *hci_dev_get(int index); 1461 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1462 1463 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); 1464 1465 static inline struct hci_dev *hci_alloc_dev(void) 1466 { 1467 return hci_alloc_dev_priv(0); 1468 } 1469 1470 void hci_free_dev(struct hci_dev *hdev); 1471 int hci_register_dev(struct hci_dev *hdev); 1472 void hci_unregister_dev(struct hci_dev *hdev); 1473 void hci_release_dev(struct hci_dev *hdev); 1474 int hci_register_suspend_notifier(struct hci_dev *hdev); 1475 int hci_unregister_suspend_notifier(struct hci_dev *hdev); 1476 int hci_suspend_dev(struct hci_dev *hdev); 1477 int hci_resume_dev(struct hci_dev *hdev); 1478 int hci_reset_dev(struct hci_dev *hdev); 1479 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1480 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1481 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1482 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1483 1484 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) 1485 { 1486 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 1487 hdev->msft_opcode = opcode; 1488 #endif 1489 } 1490 1491 static inline void hci_set_aosp_capable(struct hci_dev *hdev) 1492 { 1493 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 1494 hdev->aosp_capable = true; 1495 #endif 1496 } 1497 1498 int hci_dev_open(__u16 dev); 1499 int hci_dev_close(__u16 dev); 1500 int hci_dev_do_close(struct hci_dev *hdev); 1501 int hci_dev_reset(__u16 dev); 1502 int hci_dev_reset_stat(__u16 dev); 1503 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1504 int hci_get_dev_list(void __user *arg); 1505 int hci_get_dev_info(void __user *arg); 1506 int hci_get_conn_list(void __user *arg); 1507 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1508 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1509 int hci_inquiry(void __user *arg); 1510 1511 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1512 bdaddr_t *bdaddr, u8 type); 1513 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1514 struct list_head *list, bdaddr_t *bdaddr, 1515 u8 type); 1516 struct bdaddr_list_with_flags * 1517 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1518 u8 type); 1519 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1520 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1521 u8 type, u8 *peer_irk, u8 *local_irk); 1522 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1523 u8 type, u32 flags); 1524 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1525 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1526 u8 type); 1527 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1528 u8 type); 1529 void hci_bdaddr_list_clear(struct list_head *list); 1530 1531 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1532 bdaddr_t *addr, u8 addr_type); 1533 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1534 bdaddr_t *addr, u8 addr_type); 1535 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1536 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1537 1538 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1539 bdaddr_t *addr, 1540 u8 addr_type); 1541 1542 void hci_uuids_clear(struct hci_dev *hdev); 1543 1544 void hci_link_keys_clear(struct hci_dev *hdev); 1545 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1546 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1547 bdaddr_t *bdaddr, u8 *val, u8 type, 1548 u8 pin_len, bool *persistent); 1549 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1550 u8 addr_type, u8 type, u8 authenticated, 1551 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1552 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1553 u8 addr_type, u8 role); 1554 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1555 void hci_smp_ltks_clear(struct hci_dev *hdev); 1556 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1557 1558 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1559 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1560 u8 addr_type); 1561 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1562 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1563 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1564 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]); 1565 void hci_blocked_keys_clear(struct hci_dev *hdev); 1566 void hci_smp_irks_clear(struct hci_dev *hdev); 1567 1568 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1569 1570 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1571 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1572 bdaddr_t *bdaddr, u8 bdaddr_type); 1573 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1574 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1575 u8 *hash256, u8 *rand256); 1576 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1577 u8 bdaddr_type); 1578 1579 void hci_adv_instances_clear(struct hci_dev *hdev); 1580 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1581 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1582 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, 1583 u32 flags, u16 adv_data_len, u8 *adv_data, 1584 u16 scan_rsp_len, u8 *scan_rsp_data, 1585 u16 timeout, u16 duration, s8 tx_power, 1586 u32 min_interval, u32 max_interval, 1587 u8 mesh_handle); 1588 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, 1589 u32 flags, u8 data_len, u8 *data, 1590 u32 min_interval, u32 max_interval); 1591 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, 1592 u16 adv_data_len, u8 *adv_data, 1593 u16 scan_rsp_len, u8 *scan_rsp_data); 1594 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1595 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1596 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance); 1597 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); 1598 1599 void hci_adv_monitors_clear(struct hci_dev *hdev); 1600 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1601 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1602 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); 1603 int hci_remove_all_adv_monitor(struct hci_dev *hdev); 1604 bool hci_is_adv_monitoring(struct hci_dev *hdev); 1605 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); 1606 1607 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1608 1609 void hci_init_sysfs(struct hci_dev *hdev); 1610 void hci_conn_init_sysfs(struct hci_conn *conn); 1611 void hci_conn_add_sysfs(struct hci_conn *conn); 1612 void hci_conn_del_sysfs(struct hci_conn *conn); 1613 1614 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1615 1616 /* ----- LMP capabilities ----- */ 1617 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1618 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1619 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1620 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1621 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1622 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1623 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1624 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1625 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1626 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1627 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1628 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M) 1629 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1630 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1631 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1632 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1633 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1634 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1635 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1636 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1637 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1638 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1639 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1640 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1641 1642 /* ----- Extended LMP capabilities ----- */ 1643 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL) 1644 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL) 1645 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1646 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1647 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1648 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1649 1650 /* ----- Host capabilities ----- */ 1651 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1652 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1653 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1654 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1655 1656 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1657 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1658 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1659 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1660 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ 1661 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) 1662 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ 1663 !adv->rpa_expired) 1664 1665 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1666 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1667 1668 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1669 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1670 1671 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1672 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1673 1674 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY) 1675 1676 /* Use LL Privacy based address resolution if supported */ 1677 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \ 1678 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY)) 1679 1680 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \ 1681 (hdev->commands[39] & 0x04)) 1682 1683 /* Use enhanced synchronous connection if command is supported and its quirk 1684 * has not been set. 1685 */ 1686 #define enhanced_sync_conn_capable(dev) \ 1687 (((dev)->commands[29] & 0x08) && \ 1688 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks)) 1689 1690 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1691 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1692 ((dev)->commands[37] & 0x40)) 1693 /* Use ext create connection if command is supported */ 1694 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1695 1696 /* Extended advertising support */ 1697 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1698 1699 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789: 1700 * 1701 * C24: Mandatory if the LE Controller supports Connection State and either 1702 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported 1703 */ 1704 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \ 1705 ext_adv_capable(dev)) 1706 1707 /* Periodic advertising support */ 1708 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV)) 1709 1710 /* CIS Master/Slave and BIS support */ 1711 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev)) 1712 #define cis_capable(dev) \ 1713 (cis_central_capable(dev) || cis_peripheral_capable(dev)) 1714 #define cis_central_capable(dev) \ 1715 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL) 1716 #define cis_peripheral_capable(dev) \ 1717 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) 1718 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) 1719 1720 /* ----- HCI protocols ----- */ 1721 #define HCI_PROTO_DEFER 0x01 1722 1723 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1724 __u8 type, __u8 *flags) 1725 { 1726 switch (type) { 1727 case ACL_LINK: 1728 return l2cap_connect_ind(hdev, bdaddr); 1729 1730 case SCO_LINK: 1731 case ESCO_LINK: 1732 return sco_connect_ind(hdev, bdaddr, flags); 1733 1734 case ISO_LINK: 1735 return iso_connect_ind(hdev, bdaddr, flags); 1736 1737 default: 1738 BT_ERR("unknown link type %d", type); 1739 return -EINVAL; 1740 } 1741 } 1742 1743 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1744 { 1745 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1746 return HCI_ERROR_REMOTE_USER_TERM; 1747 1748 return l2cap_disconn_ind(conn); 1749 } 1750 1751 /* ----- HCI callbacks ----- */ 1752 struct hci_cb { 1753 struct list_head list; 1754 1755 char *name; 1756 1757 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1758 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1759 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1760 __u8 encrypt); 1761 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1762 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1763 }; 1764 1765 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1766 { 1767 struct hci_cb *cb; 1768 1769 mutex_lock(&hci_cb_list_lock); 1770 list_for_each_entry(cb, &hci_cb_list, list) { 1771 if (cb->connect_cfm) 1772 cb->connect_cfm(conn, status); 1773 } 1774 mutex_unlock(&hci_cb_list_lock); 1775 1776 if (conn->connect_cfm_cb) 1777 conn->connect_cfm_cb(conn, status); 1778 } 1779 1780 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1781 { 1782 struct hci_cb *cb; 1783 1784 mutex_lock(&hci_cb_list_lock); 1785 list_for_each_entry(cb, &hci_cb_list, list) { 1786 if (cb->disconn_cfm) 1787 cb->disconn_cfm(conn, reason); 1788 } 1789 mutex_unlock(&hci_cb_list_lock); 1790 1791 if (conn->disconn_cfm_cb) 1792 conn->disconn_cfm_cb(conn, reason); 1793 } 1794 1795 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1796 { 1797 struct hci_cb *cb; 1798 __u8 encrypt; 1799 1800 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1801 return; 1802 1803 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1804 1805 mutex_lock(&hci_cb_list_lock); 1806 list_for_each_entry(cb, &hci_cb_list, list) { 1807 if (cb->security_cfm) 1808 cb->security_cfm(conn, status, encrypt); 1809 } 1810 mutex_unlock(&hci_cb_list_lock); 1811 1812 if (conn->security_cfm_cb) 1813 conn->security_cfm_cb(conn, status); 1814 } 1815 1816 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status) 1817 { 1818 struct hci_cb *cb; 1819 __u8 encrypt; 1820 1821 if (conn->state == BT_CONFIG) { 1822 if (!status) 1823 conn->state = BT_CONNECTED; 1824 1825 hci_connect_cfm(conn, status); 1826 hci_conn_drop(conn); 1827 return; 1828 } 1829 1830 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) 1831 encrypt = 0x00; 1832 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) 1833 encrypt = 0x02; 1834 else 1835 encrypt = 0x01; 1836 1837 if (!status) { 1838 if (conn->sec_level == BT_SECURITY_SDP) 1839 conn->sec_level = BT_SECURITY_LOW; 1840 1841 if (conn->pending_sec_level > conn->sec_level) 1842 conn->sec_level = conn->pending_sec_level; 1843 } 1844 1845 mutex_lock(&hci_cb_list_lock); 1846 list_for_each_entry(cb, &hci_cb_list, list) { 1847 if (cb->security_cfm) 1848 cb->security_cfm(conn, status, encrypt); 1849 } 1850 mutex_unlock(&hci_cb_list_lock); 1851 1852 if (conn->security_cfm_cb) 1853 conn->security_cfm_cb(conn, status); 1854 } 1855 1856 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1857 { 1858 struct hci_cb *cb; 1859 1860 mutex_lock(&hci_cb_list_lock); 1861 list_for_each_entry(cb, &hci_cb_list, list) { 1862 if (cb->key_change_cfm) 1863 cb->key_change_cfm(conn, status); 1864 } 1865 mutex_unlock(&hci_cb_list_lock); 1866 } 1867 1868 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1869 __u8 role) 1870 { 1871 struct hci_cb *cb; 1872 1873 mutex_lock(&hci_cb_list_lock); 1874 list_for_each_entry(cb, &hci_cb_list, list) { 1875 if (cb->role_switch_cfm) 1876 cb->role_switch_cfm(conn, status, role); 1877 } 1878 mutex_unlock(&hci_cb_list_lock); 1879 } 1880 1881 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1882 { 1883 if (addr_type != ADDR_LE_DEV_RANDOM) 1884 return false; 1885 1886 if ((bdaddr->b[5] & 0xc0) == 0x40) 1887 return true; 1888 1889 return false; 1890 } 1891 1892 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1893 { 1894 if (addr_type == ADDR_LE_DEV_PUBLIC) 1895 return true; 1896 1897 /* Check for Random Static address type */ 1898 if ((addr->b[5] & 0xc0) == 0xc0) 1899 return true; 1900 1901 return false; 1902 } 1903 1904 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1905 bdaddr_t *bdaddr, u8 addr_type) 1906 { 1907 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1908 return NULL; 1909 1910 return hci_find_irk_by_rpa(hdev, bdaddr); 1911 } 1912 1913 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1914 u16 to_multiplier) 1915 { 1916 u16 max_latency; 1917 1918 if (min > max || min < 6 || max > 3200) 1919 return -EINVAL; 1920 1921 if (to_multiplier < 10 || to_multiplier > 3200) 1922 return -EINVAL; 1923 1924 if (max >= to_multiplier * 8) 1925 return -EINVAL; 1926 1927 max_latency = (to_multiplier * 4 / max) - 1; 1928 if (latency > 499 || latency > max_latency) 1929 return -EINVAL; 1930 1931 return 0; 1932 } 1933 1934 int hci_register_cb(struct hci_cb *hcb); 1935 int hci_unregister_cb(struct hci_cb *hcb); 1936 1937 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 1938 const void *param); 1939 1940 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1941 const void *param); 1942 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1943 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1944 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); 1945 1946 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1947 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); 1948 1949 u32 hci_conn_get_phy(struct hci_conn *conn); 1950 1951 /* ----- HCI Sockets ----- */ 1952 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1953 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1954 int flag, struct sock *skip_sk); 1955 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1956 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 1957 void *data, u16 data_len, ktime_t tstamp, 1958 int flag, struct sock *skip_sk); 1959 1960 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1961 1962 #define HCI_MGMT_VAR_LEN BIT(0) 1963 #define HCI_MGMT_NO_HDEV BIT(1) 1964 #define HCI_MGMT_UNTRUSTED BIT(2) 1965 #define HCI_MGMT_UNCONFIGURED BIT(3) 1966 #define HCI_MGMT_HDEV_OPTIONAL BIT(4) 1967 1968 struct hci_mgmt_handler { 1969 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1970 u16 data_len); 1971 size_t data_len; 1972 unsigned long flags; 1973 }; 1974 1975 struct hci_mgmt_chan { 1976 struct list_head list; 1977 unsigned short channel; 1978 size_t handler_count; 1979 const struct hci_mgmt_handler *handlers; 1980 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 1981 }; 1982 1983 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 1984 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 1985 1986 /* Management interface */ 1987 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1988 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1989 BIT(BDADDR_LE_RANDOM)) 1990 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1991 BIT(BDADDR_LE_PUBLIC) | \ 1992 BIT(BDADDR_LE_RANDOM)) 1993 1994 /* These LE scan and inquiry parameters were chosen according to LE General 1995 * Discovery Procedure specification. 1996 */ 1997 #define DISCOV_LE_SCAN_WIN 0x12 1998 #define DISCOV_LE_SCAN_INT 0x12 1999 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 2000 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 2001 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 2002 #define DISCOV_BREDR_INQUIRY_LEN 0x08 2003 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 2004 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ 2005 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ 2006 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */ 2007 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */ 2008 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */ 2009 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */ 2010 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10) 2011 2012 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */ 2013 2014 void mgmt_fill_version_info(void *ver); 2015 int mgmt_new_settings(struct hci_dev *hdev); 2016 void mgmt_index_added(struct hci_dev *hdev); 2017 void mgmt_index_removed(struct hci_dev *hdev); 2018 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 2019 void mgmt_power_on(struct hci_dev *hdev, int err); 2020 void __mgmt_power_off(struct hci_dev *hdev); 2021 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 2022 bool persistent); 2023 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 2024 u8 *name, u8 name_len); 2025 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 2026 u8 link_type, u8 addr_type, u8 reason, 2027 bool mgmt_connected); 2028 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 2029 u8 link_type, u8 addr_type, u8 status); 2030 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2031 u8 addr_type, u8 status); 2032 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 2033 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2034 u8 status); 2035 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2036 u8 status); 2037 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2038 u8 link_type, u8 addr_type, u32 value, 2039 u8 confirm_hint); 2040 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2041 u8 link_type, u8 addr_type, u8 status); 2042 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2043 u8 link_type, u8 addr_type, u8 status); 2044 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2045 u8 link_type, u8 addr_type); 2046 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2047 u8 link_type, u8 addr_type, u8 status); 2048 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2049 u8 link_type, u8 addr_type, u8 status); 2050 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 2051 u8 link_type, u8 addr_type, u32 passkey, 2052 u8 entered); 2053 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 2054 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 2055 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 2056 u8 status); 2057 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 2058 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 2059 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 2060 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2061 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 2062 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len, 2063 u64 instant); 2064 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2065 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 2066 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 2067 void mgmt_suspending(struct hci_dev *hdev, u8 state); 2068 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr, 2069 u8 addr_type); 2070 bool mgmt_powering_down(struct hci_dev *hdev); 2071 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 2072 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 2073 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 2074 bool persistent); 2075 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 2076 u8 bdaddr_type, u8 store_hint, u16 min_interval, 2077 u16 max_interval, u16 latency, u16 timeout); 2078 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 2079 bool mgmt_get_connectable(struct hci_dev *hdev); 2080 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 2081 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 2082 u8 instance); 2083 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 2084 u8 instance); 2085 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); 2086 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 2087 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, 2088 bdaddr_t *bdaddr, u8 addr_type); 2089 2090 int hci_abort_conn(struct hci_conn *conn, u8 reason); 2091 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 2092 u16 to_multiplier); 2093 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 2094 __u8 ltk[16], __u8 key_size); 2095 2096 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 2097 u8 *bdaddr_type); 2098 2099 #define SCO_AIRMODE_MASK 0x0003 2100 #define SCO_AIRMODE_CVSD 0x0000 2101 #define SCO_AIRMODE_TRANSP 0x0003 2102 2103 #define LOCAL_CODEC_ACL_MASK BIT(0) 2104 #define LOCAL_CODEC_SCO_MASK BIT(1) 2105 2106 #define TRANSPORT_TYPE_MAX 0x04 2107 2108 #endif /* __HCI_CORE_H */ 2109