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_CANCEL, 958 HCI_CONN_PARAM_REMOVAL_PEND, 959 HCI_CONN_NEW_LINK_KEY, 960 HCI_CONN_SCANNING, 961 HCI_CONN_AUTH_FAILURE, 962 HCI_CONN_PER_ADV, 963 }; 964 965 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 966 { 967 struct hci_dev *hdev = conn->hdev; 968 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 969 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 970 } 971 972 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 973 { 974 struct hci_dev *hdev = conn->hdev; 975 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 976 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 977 } 978 979 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 980 { 981 struct hci_conn_hash *h = &hdev->conn_hash; 982 list_add_rcu(&c->list, &h->list); 983 switch (c->type) { 984 case ACL_LINK: 985 h->acl_num++; 986 break; 987 case AMP_LINK: 988 h->amp_num++; 989 break; 990 case LE_LINK: 991 h->le_num++; 992 if (c->role == HCI_ROLE_SLAVE) 993 h->le_num_peripheral++; 994 break; 995 case SCO_LINK: 996 case ESCO_LINK: 997 h->sco_num++; 998 break; 999 case ISO_LINK: 1000 h->iso_num++; 1001 break; 1002 } 1003 } 1004 1005 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 1006 { 1007 struct hci_conn_hash *h = &hdev->conn_hash; 1008 1009 list_del_rcu(&c->list); 1010 synchronize_rcu(); 1011 1012 switch (c->type) { 1013 case ACL_LINK: 1014 h->acl_num--; 1015 break; 1016 case AMP_LINK: 1017 h->amp_num--; 1018 break; 1019 case LE_LINK: 1020 h->le_num--; 1021 if (c->role == HCI_ROLE_SLAVE) 1022 h->le_num_peripheral--; 1023 break; 1024 case SCO_LINK: 1025 case ESCO_LINK: 1026 h->sco_num--; 1027 break; 1028 case ISO_LINK: 1029 h->iso_num--; 1030 break; 1031 } 1032 } 1033 1034 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 1035 { 1036 struct hci_conn_hash *h = &hdev->conn_hash; 1037 switch (type) { 1038 case ACL_LINK: 1039 return h->acl_num; 1040 case AMP_LINK: 1041 return h->amp_num; 1042 case LE_LINK: 1043 return h->le_num; 1044 case SCO_LINK: 1045 case ESCO_LINK: 1046 return h->sco_num; 1047 case ISO_LINK: 1048 return h->iso_num; 1049 default: 1050 return 0; 1051 } 1052 } 1053 1054 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 1055 { 1056 struct hci_conn_hash *c = &hdev->conn_hash; 1057 1058 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num; 1059 } 1060 1061 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 1062 { 1063 struct hci_conn_hash *h = &hdev->conn_hash; 1064 struct hci_conn *c; 1065 __u8 type = INVALID_LINK; 1066 1067 rcu_read_lock(); 1068 1069 list_for_each_entry_rcu(c, &h->list, list) { 1070 if (c->handle == handle) { 1071 type = c->type; 1072 break; 1073 } 1074 } 1075 1076 rcu_read_unlock(); 1077 1078 return type; 1079 } 1080 1081 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev, 1082 bdaddr_t *ba, 1083 __u8 big, __u8 bis) 1084 { 1085 struct hci_conn_hash *h = &hdev->conn_hash; 1086 struct hci_conn *c; 1087 1088 rcu_read_lock(); 1089 1090 list_for_each_entry_rcu(c, &h->list, list) { 1091 if (bacmp(&c->dst, ba) || c->type != ISO_LINK) 1092 continue; 1093 1094 if (c->iso_qos.big == big && c->iso_qos.bis == bis) { 1095 rcu_read_unlock(); 1096 return c; 1097 } 1098 } 1099 rcu_read_unlock(); 1100 1101 return NULL; 1102 } 1103 1104 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 1105 __u16 handle) 1106 { 1107 struct hci_conn_hash *h = &hdev->conn_hash; 1108 struct hci_conn *c; 1109 1110 rcu_read_lock(); 1111 1112 list_for_each_entry_rcu(c, &h->list, list) { 1113 if (c->handle == handle) { 1114 rcu_read_unlock(); 1115 return c; 1116 } 1117 } 1118 rcu_read_unlock(); 1119 1120 return NULL; 1121 } 1122 1123 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 1124 __u8 type, bdaddr_t *ba) 1125 { 1126 struct hci_conn_hash *h = &hdev->conn_hash; 1127 struct hci_conn *c; 1128 1129 rcu_read_lock(); 1130 1131 list_for_each_entry_rcu(c, &h->list, list) { 1132 if (c->type == type && !bacmp(&c->dst, ba)) { 1133 rcu_read_unlock(); 1134 return c; 1135 } 1136 } 1137 1138 rcu_read_unlock(); 1139 1140 return NULL; 1141 } 1142 1143 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 1144 bdaddr_t *ba, 1145 __u8 ba_type) 1146 { 1147 struct hci_conn_hash *h = &hdev->conn_hash; 1148 struct hci_conn *c; 1149 1150 rcu_read_lock(); 1151 1152 list_for_each_entry_rcu(c, &h->list, list) { 1153 if (c->type != LE_LINK) 1154 continue; 1155 1156 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1157 rcu_read_unlock(); 1158 return c; 1159 } 1160 } 1161 1162 rcu_read_unlock(); 1163 1164 return NULL; 1165 } 1166 1167 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev, 1168 bdaddr_t *ba, 1169 __u8 ba_type) 1170 { 1171 struct hci_conn_hash *h = &hdev->conn_hash; 1172 struct hci_conn *c; 1173 1174 rcu_read_lock(); 1175 1176 list_for_each_entry_rcu(c, &h->list, list) { 1177 if (c->type != ISO_LINK) 1178 continue; 1179 1180 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1181 rcu_read_unlock(); 1182 return c; 1183 } 1184 } 1185 1186 rcu_read_unlock(); 1187 1188 return NULL; 1189 } 1190 1191 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev, 1192 __u8 handle) 1193 { 1194 struct hci_conn_hash *h = &hdev->conn_hash; 1195 struct hci_conn *c; 1196 1197 rcu_read_lock(); 1198 1199 list_for_each_entry_rcu(c, &h->list, list) { 1200 if (c->type != ISO_LINK) 1201 continue; 1202 1203 if (handle == c->iso_qos.cig) { 1204 rcu_read_unlock(); 1205 return c; 1206 } 1207 } 1208 1209 rcu_read_unlock(); 1210 1211 return NULL; 1212 } 1213 1214 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev, 1215 __u8 handle) 1216 { 1217 struct hci_conn_hash *h = &hdev->conn_hash; 1218 struct hci_conn *c; 1219 1220 rcu_read_lock(); 1221 1222 list_for_each_entry_rcu(c, &h->list, list) { 1223 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK) 1224 continue; 1225 1226 if (handle == c->iso_qos.big) { 1227 rcu_read_unlock(); 1228 return c; 1229 } 1230 } 1231 1232 rcu_read_unlock(); 1233 1234 return NULL; 1235 } 1236 1237 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 1238 __u8 type, __u16 state) 1239 { 1240 struct hci_conn_hash *h = &hdev->conn_hash; 1241 struct hci_conn *c; 1242 1243 rcu_read_lock(); 1244 1245 list_for_each_entry_rcu(c, &h->list, list) { 1246 if (c->type == type && c->state == state) { 1247 rcu_read_unlock(); 1248 return c; 1249 } 1250 } 1251 1252 rcu_read_unlock(); 1253 1254 return NULL; 1255 } 1256 1257 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data); 1258 static inline void hci_conn_hash_list_state(struct hci_dev *hdev, 1259 hci_conn_func_t func, __u8 type, 1260 __u16 state, void *data) 1261 { 1262 struct hci_conn_hash *h = &hdev->conn_hash; 1263 struct hci_conn *c; 1264 1265 if (!func) 1266 return; 1267 1268 rcu_read_lock(); 1269 1270 list_for_each_entry_rcu(c, &h->list, list) { 1271 if (c->type == type && c->state == state) 1272 func(c, data); 1273 } 1274 1275 rcu_read_unlock(); 1276 } 1277 1278 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 1279 { 1280 struct hci_conn_hash *h = &hdev->conn_hash; 1281 struct hci_conn *c; 1282 1283 rcu_read_lock(); 1284 1285 list_for_each_entry_rcu(c, &h->list, list) { 1286 if (c->type == LE_LINK && c->state == BT_CONNECT && 1287 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 1288 rcu_read_unlock(); 1289 return c; 1290 } 1291 } 1292 1293 rcu_read_unlock(); 1294 1295 return NULL; 1296 } 1297 1298 int hci_disconnect(struct hci_conn *conn, __u8 reason); 1299 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 1300 void hci_sco_setup(struct hci_conn *conn, __u8 status); 1301 bool hci_iso_setup_path(struct hci_conn *conn); 1302 int hci_le_create_cis(struct hci_conn *conn); 1303 1304 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 1305 u8 role); 1306 int hci_conn_del(struct hci_conn *conn); 1307 void hci_conn_hash_flush(struct hci_dev *hdev); 1308 void hci_conn_check_pending(struct hci_dev *hdev); 1309 1310 struct hci_chan *hci_chan_create(struct hci_conn *conn); 1311 void hci_chan_del(struct hci_chan *chan); 1312 void hci_chan_list_flush(struct hci_conn *conn); 1313 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 1314 1315 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 1316 u8 dst_type, u8 sec_level, 1317 u16 conn_timeout, 1318 enum conn_reasons conn_reason); 1319 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 1320 u8 dst_type, bool dst_resolved, u8 sec_level, 1321 u16 conn_timeout, u8 role); 1322 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 1323 u8 sec_level, u8 auth_type, 1324 enum conn_reasons conn_reason); 1325 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 1326 __u16 setting, struct bt_codec *codec); 1327 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, 1328 __u8 dst_type, struct bt_iso_qos *qos); 1329 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, 1330 __u8 dst_type, struct bt_iso_qos *qos); 1331 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, 1332 __u8 dst_type, struct bt_iso_qos *qos, 1333 __u8 data_len, __u8 *data); 1334 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, 1335 __u8 sid); 1336 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos, 1337 __u16 sync_handle, __u8 num_bis, __u8 bis[]); 1338 int hci_conn_check_link_mode(struct hci_conn *conn); 1339 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 1340 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 1341 bool initiator); 1342 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 1343 1344 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 1345 1346 void hci_conn_failed(struct hci_conn *conn, u8 status); 1347 1348 /* 1349 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 1350 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 1351 * working or anything else. They just guarantee that the object is available 1352 * and can be dereferenced. So you can use its locks, local variables and any 1353 * other constant data. 1354 * Before accessing runtime data, you _must_ lock the object and then check that 1355 * it is still running. As soon as you release the locks, the connection might 1356 * get dropped, though. 1357 * 1358 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 1359 * how long the underlying connection is held. So every channel that runs on the 1360 * hci_conn object calls this to prevent the connection from disappearing. As 1361 * long as you hold a device, you must also guarantee that you have a valid 1362 * reference to the device via hci_conn_get() (or the initial reference from 1363 * hci_conn_add()). 1364 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 1365 * break because nobody cares for that. But this means, we cannot use 1366 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 1367 */ 1368 1369 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 1370 { 1371 get_device(&conn->dev); 1372 return conn; 1373 } 1374 1375 static inline void hci_conn_put(struct hci_conn *conn) 1376 { 1377 put_device(&conn->dev); 1378 } 1379 1380 static inline void hci_conn_hold(struct hci_conn *conn) 1381 { 1382 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1383 1384 atomic_inc(&conn->refcnt); 1385 cancel_delayed_work(&conn->disc_work); 1386 } 1387 1388 static inline void hci_conn_drop(struct hci_conn *conn) 1389 { 1390 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1391 1392 if (atomic_dec_and_test(&conn->refcnt)) { 1393 unsigned long timeo; 1394 1395 switch (conn->type) { 1396 case ACL_LINK: 1397 case LE_LINK: 1398 cancel_delayed_work(&conn->idle_work); 1399 if (conn->state == BT_CONNECTED) { 1400 timeo = conn->disc_timeout; 1401 if (!conn->out) 1402 timeo *= 2; 1403 } else { 1404 timeo = 0; 1405 } 1406 break; 1407 1408 case AMP_LINK: 1409 timeo = conn->disc_timeout; 1410 break; 1411 1412 default: 1413 timeo = 0; 1414 break; 1415 } 1416 1417 cancel_delayed_work(&conn->disc_work); 1418 queue_delayed_work(conn->hdev->workqueue, 1419 &conn->disc_work, timeo); 1420 } 1421 } 1422 1423 /* ----- HCI Devices ----- */ 1424 static inline void hci_dev_put(struct hci_dev *d) 1425 { 1426 BT_DBG("%s orig refcnt %d", d->name, 1427 kref_read(&d->dev.kobj.kref)); 1428 1429 put_device(&d->dev); 1430 } 1431 1432 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1433 { 1434 BT_DBG("%s orig refcnt %d", d->name, 1435 kref_read(&d->dev.kobj.kref)); 1436 1437 get_device(&d->dev); 1438 return d; 1439 } 1440 1441 #define hci_dev_lock(d) mutex_lock(&d->lock) 1442 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1443 1444 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1445 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1446 1447 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1448 { 1449 return dev_get_drvdata(&hdev->dev); 1450 } 1451 1452 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1453 { 1454 dev_set_drvdata(&hdev->dev, data); 1455 } 1456 1457 static inline void *hci_get_priv(struct hci_dev *hdev) 1458 { 1459 return (char *)hdev + sizeof(*hdev); 1460 } 1461 1462 struct hci_dev *hci_dev_get(int index); 1463 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1464 1465 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); 1466 1467 static inline struct hci_dev *hci_alloc_dev(void) 1468 { 1469 return hci_alloc_dev_priv(0); 1470 } 1471 1472 void hci_free_dev(struct hci_dev *hdev); 1473 int hci_register_dev(struct hci_dev *hdev); 1474 void hci_unregister_dev(struct hci_dev *hdev); 1475 void hci_release_dev(struct hci_dev *hdev); 1476 int hci_register_suspend_notifier(struct hci_dev *hdev); 1477 int hci_unregister_suspend_notifier(struct hci_dev *hdev); 1478 int hci_suspend_dev(struct hci_dev *hdev); 1479 int hci_resume_dev(struct hci_dev *hdev); 1480 int hci_reset_dev(struct hci_dev *hdev); 1481 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1482 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1483 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1484 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1485 1486 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) 1487 { 1488 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 1489 hdev->msft_opcode = opcode; 1490 #endif 1491 } 1492 1493 static inline void hci_set_aosp_capable(struct hci_dev *hdev) 1494 { 1495 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 1496 hdev->aosp_capable = true; 1497 #endif 1498 } 1499 1500 int hci_dev_open(__u16 dev); 1501 int hci_dev_close(__u16 dev); 1502 int hci_dev_do_close(struct hci_dev *hdev); 1503 int hci_dev_reset(__u16 dev); 1504 int hci_dev_reset_stat(__u16 dev); 1505 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1506 int hci_get_dev_list(void __user *arg); 1507 int hci_get_dev_info(void __user *arg); 1508 int hci_get_conn_list(void __user *arg); 1509 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1510 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1511 int hci_inquiry(void __user *arg); 1512 1513 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1514 bdaddr_t *bdaddr, u8 type); 1515 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1516 struct list_head *list, bdaddr_t *bdaddr, 1517 u8 type); 1518 struct bdaddr_list_with_flags * 1519 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1520 u8 type); 1521 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1522 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1523 u8 type, u8 *peer_irk, u8 *local_irk); 1524 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1525 u8 type, u32 flags); 1526 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1527 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1528 u8 type); 1529 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1530 u8 type); 1531 void hci_bdaddr_list_clear(struct list_head *list); 1532 1533 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1534 bdaddr_t *addr, u8 addr_type); 1535 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1536 bdaddr_t *addr, u8 addr_type); 1537 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1538 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1539 1540 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1541 bdaddr_t *addr, 1542 u8 addr_type); 1543 1544 void hci_uuids_clear(struct hci_dev *hdev); 1545 1546 void hci_link_keys_clear(struct hci_dev *hdev); 1547 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1548 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1549 bdaddr_t *bdaddr, u8 *val, u8 type, 1550 u8 pin_len, bool *persistent); 1551 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1552 u8 addr_type, u8 type, u8 authenticated, 1553 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1554 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1555 u8 addr_type, u8 role); 1556 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1557 void hci_smp_ltks_clear(struct hci_dev *hdev); 1558 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1559 1560 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1561 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1562 u8 addr_type); 1563 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1564 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1565 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1566 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]); 1567 void hci_blocked_keys_clear(struct hci_dev *hdev); 1568 void hci_smp_irks_clear(struct hci_dev *hdev); 1569 1570 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1571 1572 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1573 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1574 bdaddr_t *bdaddr, u8 bdaddr_type); 1575 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1576 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1577 u8 *hash256, u8 *rand256); 1578 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1579 u8 bdaddr_type); 1580 1581 void hci_adv_instances_clear(struct hci_dev *hdev); 1582 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1583 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1584 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, 1585 u32 flags, u16 adv_data_len, u8 *adv_data, 1586 u16 scan_rsp_len, u8 *scan_rsp_data, 1587 u16 timeout, u16 duration, s8 tx_power, 1588 u32 min_interval, u32 max_interval, 1589 u8 mesh_handle); 1590 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, 1591 u32 flags, u8 data_len, u8 *data, 1592 u32 min_interval, u32 max_interval); 1593 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, 1594 u16 adv_data_len, u8 *adv_data, 1595 u16 scan_rsp_len, u8 *scan_rsp_data); 1596 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1597 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1598 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance); 1599 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); 1600 1601 void hci_adv_monitors_clear(struct hci_dev *hdev); 1602 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1603 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1604 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); 1605 int hci_remove_all_adv_monitor(struct hci_dev *hdev); 1606 bool hci_is_adv_monitoring(struct hci_dev *hdev); 1607 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); 1608 1609 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1610 1611 void hci_init_sysfs(struct hci_dev *hdev); 1612 void hci_conn_init_sysfs(struct hci_conn *conn); 1613 void hci_conn_add_sysfs(struct hci_conn *conn); 1614 void hci_conn_del_sysfs(struct hci_conn *conn); 1615 1616 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1617 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent) 1618 1619 /* ----- LMP capabilities ----- */ 1620 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1621 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1622 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1623 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1624 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1625 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1626 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1627 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1628 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1629 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1630 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1631 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M) 1632 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1633 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1634 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1635 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1636 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1637 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1638 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1639 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1640 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1641 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1642 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1643 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1644 1645 /* ----- Extended LMP capabilities ----- */ 1646 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL) 1647 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL) 1648 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1649 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1650 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1651 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1652 1653 /* ----- Host capabilities ----- */ 1654 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1655 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1656 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1657 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1658 1659 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1660 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1661 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1662 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1663 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ 1664 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) 1665 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ 1666 !adv->rpa_expired) 1667 1668 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1669 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1670 1671 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1672 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1673 1674 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1675 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1676 1677 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY) 1678 1679 /* Use LL Privacy based address resolution if supported */ 1680 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \ 1681 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY)) 1682 1683 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \ 1684 (hdev->commands[39] & 0x04)) 1685 1686 /* Use enhanced synchronous connection if command is supported and its quirk 1687 * has not been set. 1688 */ 1689 #define enhanced_sync_conn_capable(dev) \ 1690 (((dev)->commands[29] & 0x08) && \ 1691 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks)) 1692 1693 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1694 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1695 ((dev)->commands[37] & 0x40) && \ 1696 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks)) 1697 1698 /* Use ext create connection if command is supported */ 1699 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1700 1701 /* Extended advertising support */ 1702 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1703 1704 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789: 1705 * 1706 * C24: Mandatory if the LE Controller supports Connection State and either 1707 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported 1708 */ 1709 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \ 1710 ext_adv_capable(dev)) 1711 1712 /* Periodic advertising support */ 1713 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV)) 1714 1715 /* CIS Master/Slave and BIS support */ 1716 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev)) 1717 #define cis_capable(dev) \ 1718 (cis_central_capable(dev) || cis_peripheral_capable(dev)) 1719 #define cis_central_capable(dev) \ 1720 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL) 1721 #define cis_peripheral_capable(dev) \ 1722 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) 1723 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) 1724 1725 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \ 1726 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks))) 1727 1728 /* ----- HCI protocols ----- */ 1729 #define HCI_PROTO_DEFER 0x01 1730 1731 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1732 __u8 type, __u8 *flags) 1733 { 1734 switch (type) { 1735 case ACL_LINK: 1736 return l2cap_connect_ind(hdev, bdaddr); 1737 1738 case SCO_LINK: 1739 case ESCO_LINK: 1740 return sco_connect_ind(hdev, bdaddr, flags); 1741 1742 case ISO_LINK: 1743 return iso_connect_ind(hdev, bdaddr, flags); 1744 1745 default: 1746 BT_ERR("unknown link type %d", type); 1747 return -EINVAL; 1748 } 1749 } 1750 1751 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1752 { 1753 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1754 return HCI_ERROR_REMOTE_USER_TERM; 1755 1756 return l2cap_disconn_ind(conn); 1757 } 1758 1759 /* ----- HCI callbacks ----- */ 1760 struct hci_cb { 1761 struct list_head list; 1762 1763 char *name; 1764 1765 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1766 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1767 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1768 __u8 encrypt); 1769 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1770 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1771 }; 1772 1773 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1774 { 1775 struct hci_cb *cb; 1776 1777 mutex_lock(&hci_cb_list_lock); 1778 list_for_each_entry(cb, &hci_cb_list, list) { 1779 if (cb->connect_cfm) 1780 cb->connect_cfm(conn, status); 1781 } 1782 mutex_unlock(&hci_cb_list_lock); 1783 1784 if (conn->connect_cfm_cb) 1785 conn->connect_cfm_cb(conn, status); 1786 } 1787 1788 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1789 { 1790 struct hci_cb *cb; 1791 1792 mutex_lock(&hci_cb_list_lock); 1793 list_for_each_entry(cb, &hci_cb_list, list) { 1794 if (cb->disconn_cfm) 1795 cb->disconn_cfm(conn, reason); 1796 } 1797 mutex_unlock(&hci_cb_list_lock); 1798 1799 if (conn->disconn_cfm_cb) 1800 conn->disconn_cfm_cb(conn, reason); 1801 } 1802 1803 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1804 { 1805 struct hci_cb *cb; 1806 __u8 encrypt; 1807 1808 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1809 return; 1810 1811 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1812 1813 mutex_lock(&hci_cb_list_lock); 1814 list_for_each_entry(cb, &hci_cb_list, list) { 1815 if (cb->security_cfm) 1816 cb->security_cfm(conn, status, encrypt); 1817 } 1818 mutex_unlock(&hci_cb_list_lock); 1819 1820 if (conn->security_cfm_cb) 1821 conn->security_cfm_cb(conn, status); 1822 } 1823 1824 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status) 1825 { 1826 struct hci_cb *cb; 1827 __u8 encrypt; 1828 1829 if (conn->state == BT_CONFIG) { 1830 if (!status) 1831 conn->state = BT_CONNECTED; 1832 1833 hci_connect_cfm(conn, status); 1834 hci_conn_drop(conn); 1835 return; 1836 } 1837 1838 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) 1839 encrypt = 0x00; 1840 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) 1841 encrypt = 0x02; 1842 else 1843 encrypt = 0x01; 1844 1845 if (!status) { 1846 if (conn->sec_level == BT_SECURITY_SDP) 1847 conn->sec_level = BT_SECURITY_LOW; 1848 1849 if (conn->pending_sec_level > conn->sec_level) 1850 conn->sec_level = conn->pending_sec_level; 1851 } 1852 1853 mutex_lock(&hci_cb_list_lock); 1854 list_for_each_entry(cb, &hci_cb_list, list) { 1855 if (cb->security_cfm) 1856 cb->security_cfm(conn, status, encrypt); 1857 } 1858 mutex_unlock(&hci_cb_list_lock); 1859 1860 if (conn->security_cfm_cb) 1861 conn->security_cfm_cb(conn, status); 1862 } 1863 1864 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1865 { 1866 struct hci_cb *cb; 1867 1868 mutex_lock(&hci_cb_list_lock); 1869 list_for_each_entry(cb, &hci_cb_list, list) { 1870 if (cb->key_change_cfm) 1871 cb->key_change_cfm(conn, status); 1872 } 1873 mutex_unlock(&hci_cb_list_lock); 1874 } 1875 1876 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1877 __u8 role) 1878 { 1879 struct hci_cb *cb; 1880 1881 mutex_lock(&hci_cb_list_lock); 1882 list_for_each_entry(cb, &hci_cb_list, list) { 1883 if (cb->role_switch_cfm) 1884 cb->role_switch_cfm(conn, status, role); 1885 } 1886 mutex_unlock(&hci_cb_list_lock); 1887 } 1888 1889 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1890 { 1891 if (addr_type != ADDR_LE_DEV_RANDOM) 1892 return false; 1893 1894 if ((bdaddr->b[5] & 0xc0) == 0x40) 1895 return true; 1896 1897 return false; 1898 } 1899 1900 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1901 { 1902 if (addr_type == ADDR_LE_DEV_PUBLIC) 1903 return true; 1904 1905 /* Check for Random Static address type */ 1906 if ((addr->b[5] & 0xc0) == 0xc0) 1907 return true; 1908 1909 return false; 1910 } 1911 1912 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1913 bdaddr_t *bdaddr, u8 addr_type) 1914 { 1915 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1916 return NULL; 1917 1918 return hci_find_irk_by_rpa(hdev, bdaddr); 1919 } 1920 1921 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1922 u16 to_multiplier) 1923 { 1924 u16 max_latency; 1925 1926 if (min > max || min < 6 || max > 3200) 1927 return -EINVAL; 1928 1929 if (to_multiplier < 10 || to_multiplier > 3200) 1930 return -EINVAL; 1931 1932 if (max >= to_multiplier * 8) 1933 return -EINVAL; 1934 1935 max_latency = (to_multiplier * 4 / max) - 1; 1936 if (latency > 499 || latency > max_latency) 1937 return -EINVAL; 1938 1939 return 0; 1940 } 1941 1942 int hci_register_cb(struct hci_cb *hcb); 1943 int hci_unregister_cb(struct hci_cb *hcb); 1944 1945 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 1946 const void *param); 1947 1948 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1949 const void *param); 1950 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1951 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1952 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); 1953 1954 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1955 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); 1956 1957 u32 hci_conn_get_phy(struct hci_conn *conn); 1958 1959 /* ----- HCI Sockets ----- */ 1960 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1961 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1962 int flag, struct sock *skip_sk); 1963 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1964 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 1965 void *data, u16 data_len, ktime_t tstamp, 1966 int flag, struct sock *skip_sk); 1967 1968 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1969 1970 #define HCI_MGMT_VAR_LEN BIT(0) 1971 #define HCI_MGMT_NO_HDEV BIT(1) 1972 #define HCI_MGMT_UNTRUSTED BIT(2) 1973 #define HCI_MGMT_UNCONFIGURED BIT(3) 1974 #define HCI_MGMT_HDEV_OPTIONAL BIT(4) 1975 1976 struct hci_mgmt_handler { 1977 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1978 u16 data_len); 1979 size_t data_len; 1980 unsigned long flags; 1981 }; 1982 1983 struct hci_mgmt_chan { 1984 struct list_head list; 1985 unsigned short channel; 1986 size_t handler_count; 1987 const struct hci_mgmt_handler *handlers; 1988 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 1989 }; 1990 1991 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 1992 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 1993 1994 /* Management interface */ 1995 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 1996 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 1997 BIT(BDADDR_LE_RANDOM)) 1998 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 1999 BIT(BDADDR_LE_PUBLIC) | \ 2000 BIT(BDADDR_LE_RANDOM)) 2001 2002 /* These LE scan and inquiry parameters were chosen according to LE General 2003 * Discovery Procedure specification. 2004 */ 2005 #define DISCOV_LE_SCAN_WIN 0x12 2006 #define DISCOV_LE_SCAN_INT 0x12 2007 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 2008 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 2009 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 2010 #define DISCOV_BREDR_INQUIRY_LEN 0x08 2011 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 2012 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ 2013 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ 2014 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */ 2015 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */ 2016 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */ 2017 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */ 2018 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10) 2019 2020 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */ 2021 2022 void mgmt_fill_version_info(void *ver); 2023 int mgmt_new_settings(struct hci_dev *hdev); 2024 void mgmt_index_added(struct hci_dev *hdev); 2025 void mgmt_index_removed(struct hci_dev *hdev); 2026 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 2027 void mgmt_power_on(struct hci_dev *hdev, int err); 2028 void __mgmt_power_off(struct hci_dev *hdev); 2029 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 2030 bool persistent); 2031 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 2032 u8 *name, u8 name_len); 2033 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 2034 u8 link_type, u8 addr_type, u8 reason, 2035 bool mgmt_connected); 2036 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 2037 u8 link_type, u8 addr_type, u8 status); 2038 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2039 u8 addr_type, u8 status); 2040 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 2041 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2042 u8 status); 2043 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2044 u8 status); 2045 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2046 u8 link_type, u8 addr_type, u32 value, 2047 u8 confirm_hint); 2048 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2049 u8 link_type, u8 addr_type, u8 status); 2050 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2051 u8 link_type, u8 addr_type, u8 status); 2052 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2053 u8 link_type, u8 addr_type); 2054 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2055 u8 link_type, u8 addr_type, u8 status); 2056 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2057 u8 link_type, u8 addr_type, u8 status); 2058 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 2059 u8 link_type, u8 addr_type, u32 passkey, 2060 u8 entered); 2061 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 2062 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 2063 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 2064 u8 status); 2065 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 2066 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 2067 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 2068 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2069 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 2070 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len, 2071 u64 instant); 2072 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2073 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 2074 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 2075 void mgmt_suspending(struct hci_dev *hdev, u8 state); 2076 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr, 2077 u8 addr_type); 2078 bool mgmt_powering_down(struct hci_dev *hdev); 2079 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 2080 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 2081 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 2082 bool persistent); 2083 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 2084 u8 bdaddr_type, u8 store_hint, u16 min_interval, 2085 u16 max_interval, u16 latency, u16 timeout); 2086 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 2087 bool mgmt_get_connectable(struct hci_dev *hdev); 2088 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 2089 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 2090 u8 instance); 2091 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 2092 u8 instance); 2093 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); 2094 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 2095 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, 2096 bdaddr_t *bdaddr, u8 addr_type); 2097 2098 int hci_abort_conn(struct hci_conn *conn, u8 reason); 2099 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 2100 u16 to_multiplier); 2101 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 2102 __u8 ltk[16], __u8 key_size); 2103 2104 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 2105 u8 *bdaddr_type); 2106 2107 #define SCO_AIRMODE_MASK 0x0003 2108 #define SCO_AIRMODE_CVSD 0x0000 2109 #define SCO_AIRMODE_TRANSP 0x0003 2110 2111 #define LOCAL_CODEC_ACL_MASK BIT(0) 2112 #define LOCAL_CODEC_SCO_MASK BIT(1) 2113 2114 #define TRANSPORT_TYPE_MAX 0x04 2115 2116 #endif /* __HCI_CORE_H */ 2117