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