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