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 #include <net/bluetooth/coredump.h> 36 37 /* HCI priority */ 38 #define HCI_PRIO_MAX 7 39 40 /* HCI maximum id value */ 41 #define HCI_MAX_ID 10000 42 43 /* HCI Core structures */ 44 struct inquiry_data { 45 bdaddr_t bdaddr; 46 __u8 pscan_rep_mode; 47 __u8 pscan_period_mode; 48 __u8 pscan_mode; 49 __u8 dev_class[3]; 50 __le16 clock_offset; 51 __s8 rssi; 52 __u8 ssp_mode; 53 }; 54 55 struct inquiry_entry { 56 struct list_head all; /* inq_cache.all */ 57 struct list_head list; /* unknown or resolve */ 58 enum { 59 NAME_NOT_KNOWN, 60 NAME_NEEDED, 61 NAME_PENDING, 62 NAME_KNOWN, 63 } name_state; 64 __u32 timestamp; 65 struct inquiry_data data; 66 }; 67 68 struct discovery_state { 69 int type; 70 enum { 71 DISCOVERY_STOPPED, 72 DISCOVERY_STARTING, 73 DISCOVERY_FINDING, 74 DISCOVERY_RESOLVING, 75 DISCOVERY_STOPPING, 76 } state; 77 struct list_head all; /* All devices found during inquiry */ 78 struct list_head unknown; /* Name state not known */ 79 struct list_head resolve; /* Name needs to be resolved */ 80 __u32 timestamp; 81 bdaddr_t last_adv_addr; 82 u8 last_adv_addr_type; 83 s8 last_adv_rssi; 84 u32 last_adv_flags; 85 u8 last_adv_data[HCI_MAX_AD_LENGTH]; 86 u8 last_adv_data_len; 87 bool report_invalid_rssi; 88 bool result_filtering; 89 bool limited; 90 s8 rssi; 91 u16 uuid_count; 92 u8 (*uuids)[16]; 93 unsigned long scan_start; 94 unsigned long scan_duration; 95 unsigned long name_resolve_timeout; 96 }; 97 98 #define SUSPEND_NOTIFIER_TIMEOUT msecs_to_jiffies(2000) /* 2 seconds */ 99 100 enum suspend_tasks { 101 SUSPEND_PAUSE_DISCOVERY, 102 SUSPEND_UNPAUSE_DISCOVERY, 103 104 SUSPEND_PAUSE_ADVERTISING, 105 SUSPEND_UNPAUSE_ADVERTISING, 106 107 SUSPEND_SCAN_DISABLE, 108 SUSPEND_SCAN_ENABLE, 109 SUSPEND_DISCONNECTING, 110 111 SUSPEND_POWERING_DOWN, 112 113 SUSPEND_PREPARE_NOTIFIER, 114 115 SUSPEND_SET_ADV_FILTER, 116 __SUSPEND_NUM_TASKS 117 }; 118 119 enum suspended_state { 120 BT_RUNNING = 0, 121 BT_SUSPEND_DISCONNECT, 122 BT_SUSPEND_CONFIGURE_WAKE, 123 }; 124 125 struct hci_conn_hash { 126 struct list_head list; 127 unsigned int acl_num; 128 unsigned int amp_num; 129 unsigned int sco_num; 130 unsigned int iso_num; 131 unsigned int le_num; 132 unsigned int le_num_peripheral; 133 }; 134 135 struct bdaddr_list { 136 struct list_head list; 137 bdaddr_t bdaddr; 138 u8 bdaddr_type; 139 }; 140 141 struct codec_list { 142 struct list_head list; 143 u8 id; 144 __u16 cid; 145 __u16 vid; 146 u8 transport; 147 u8 num_caps; 148 u32 len; 149 struct hci_codec_caps caps[]; 150 }; 151 152 struct bdaddr_list_with_irk { 153 struct list_head list; 154 bdaddr_t bdaddr; 155 u8 bdaddr_type; 156 u8 peer_irk[16]; 157 u8 local_irk[16]; 158 }; 159 160 /* Bitmask of connection flags */ 161 enum hci_conn_flags { 162 HCI_CONN_FLAG_REMOTE_WAKEUP = 1, 163 HCI_CONN_FLAG_DEVICE_PRIVACY = 2, 164 }; 165 typedef u8 hci_conn_flags_t; 166 167 struct bdaddr_list_with_flags { 168 struct list_head list; 169 bdaddr_t bdaddr; 170 u8 bdaddr_type; 171 hci_conn_flags_t flags; 172 }; 173 174 struct bt_uuid { 175 struct list_head list; 176 u8 uuid[16]; 177 u8 size; 178 u8 svc_hint; 179 }; 180 181 struct blocked_key { 182 struct list_head list; 183 struct rcu_head rcu; 184 u8 type; 185 u8 val[16]; 186 }; 187 188 struct smp_csrk { 189 bdaddr_t bdaddr; 190 u8 bdaddr_type; 191 u8 type; 192 u8 val[16]; 193 }; 194 195 struct smp_ltk { 196 struct list_head list; 197 struct rcu_head rcu; 198 bdaddr_t bdaddr; 199 u8 bdaddr_type; 200 u8 authenticated; 201 u8 type; 202 u8 enc_size; 203 __le16 ediv; 204 __le64 rand; 205 u8 val[16]; 206 }; 207 208 struct smp_irk { 209 struct list_head list; 210 struct rcu_head rcu; 211 bdaddr_t rpa; 212 bdaddr_t bdaddr; 213 u8 addr_type; 214 u8 val[16]; 215 }; 216 217 struct link_key { 218 struct list_head list; 219 struct rcu_head rcu; 220 bdaddr_t bdaddr; 221 u8 type; 222 u8 val[HCI_LINK_KEY_SIZE]; 223 u8 pin_len; 224 }; 225 226 struct oob_data { 227 struct list_head list; 228 bdaddr_t bdaddr; 229 u8 bdaddr_type; 230 u8 present; 231 u8 hash192[16]; 232 u8 rand192[16]; 233 u8 hash256[16]; 234 u8 rand256[16]; 235 }; 236 237 struct adv_info { 238 struct list_head list; 239 bool enabled; 240 bool pending; 241 bool periodic; 242 __u8 mesh; 243 __u8 instance; 244 __u32 flags; 245 __u16 timeout; 246 __u16 remaining_time; 247 __u16 duration; 248 __u16 adv_data_len; 249 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 250 bool adv_data_changed; 251 __u16 scan_rsp_len; 252 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 253 bool scan_rsp_changed; 254 __u16 per_adv_data_len; 255 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 256 __s8 tx_power; 257 __u32 min_interval; 258 __u32 max_interval; 259 bdaddr_t random_addr; 260 bool rpa_expired; 261 struct delayed_work rpa_expired_cb; 262 }; 263 264 #define HCI_MAX_ADV_INSTANCES 5 265 #define HCI_DEFAULT_ADV_DURATION 2 266 267 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F 268 269 #define DATA_CMP(_d1, _l1, _d2, _l2) \ 270 (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2) 271 272 #define ADV_DATA_CMP(_adv, _data, _len) \ 273 DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len) 274 275 #define SCAN_RSP_CMP(_adv, _data, _len) \ 276 DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len) 277 278 struct monitored_device { 279 struct list_head list; 280 281 bdaddr_t bdaddr; 282 __u8 addr_type; 283 __u16 handle; 284 bool notified; 285 }; 286 287 struct adv_pattern { 288 struct list_head list; 289 __u8 ad_type; 290 __u8 offset; 291 __u8 length; 292 __u8 value[HCI_MAX_AD_LENGTH]; 293 }; 294 295 struct adv_rssi_thresholds { 296 __s8 low_threshold; 297 __s8 high_threshold; 298 __u16 low_threshold_timeout; 299 __u16 high_threshold_timeout; 300 __u8 sampling_period; 301 }; 302 303 struct adv_monitor { 304 struct list_head patterns; 305 struct adv_rssi_thresholds rssi; 306 __u16 handle; 307 308 enum { 309 ADV_MONITOR_STATE_NOT_REGISTERED, 310 ADV_MONITOR_STATE_REGISTERED, 311 ADV_MONITOR_STATE_OFFLOADED 312 } state; 313 }; 314 315 #define HCI_MIN_ADV_MONITOR_HANDLE 1 316 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES 32 317 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS 16 318 #define HCI_ADV_MONITOR_EXT_NONE 1 319 #define HCI_ADV_MONITOR_EXT_MSFT 2 320 321 #define HCI_MAX_SHORT_NAME_LENGTH 10 322 323 #define HCI_CONN_HANDLE_UNSET 0xffff 324 #define HCI_CONN_HANDLE_MAX 0x0eff 325 326 /* Min encryption key size to match with SMP */ 327 #define HCI_MIN_ENC_KEY_SIZE 7 328 329 /* Default LE RPA expiry time, 15 minutes */ 330 #define HCI_DEFAULT_RPA_TIMEOUT (15 * 60) 331 332 /* Default min/max age of connection information (1s/3s) */ 333 #define DEFAULT_CONN_INFO_MIN_AGE 1000 334 #define DEFAULT_CONN_INFO_MAX_AGE 3000 335 /* Default authenticated payload timeout 30s */ 336 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT 0x0bb8 337 338 struct amp_assoc { 339 __u16 len; 340 __u16 offset; 341 __u16 rem_len; 342 __u16 len_so_far; 343 __u8 data[HCI_MAX_AMP_ASSOC_SIZE]; 344 }; 345 346 #define HCI_MAX_PAGES 3 347 348 struct hci_dev { 349 struct list_head list; 350 struct mutex lock; 351 352 char name[8]; 353 unsigned long flags; 354 __u16 id; 355 __u8 bus; 356 __u8 dev_type; 357 bdaddr_t bdaddr; 358 bdaddr_t setup_addr; 359 bdaddr_t public_addr; 360 bdaddr_t random_addr; 361 bdaddr_t static_addr; 362 __u8 adv_addr_type; 363 __u8 dev_name[HCI_MAX_NAME_LENGTH]; 364 __u8 short_name[HCI_MAX_SHORT_NAME_LENGTH]; 365 __u8 eir[HCI_MAX_EIR_LENGTH]; 366 __u16 appearance; 367 __u8 dev_class[3]; 368 __u8 major_class; 369 __u8 minor_class; 370 __u8 max_page; 371 __u8 features[HCI_MAX_PAGES][8]; 372 __u8 le_features[8]; 373 __u8 le_accept_list_size; 374 __u8 le_resolv_list_size; 375 __u8 le_num_of_adv_sets; 376 __u8 le_states[8]; 377 __u8 mesh_ad_types[16]; 378 __u8 mesh_send_ref; 379 __u8 commands[64]; 380 __u8 hci_ver; 381 __u16 hci_rev; 382 __u8 lmp_ver; 383 __u16 manufacturer; 384 __u16 lmp_subver; 385 __u16 voice_setting; 386 __u8 num_iac; 387 __u16 stored_max_keys; 388 __u16 stored_num_keys; 389 __u8 io_capability; 390 __s8 inq_tx_power; 391 __u8 err_data_reporting; 392 __u16 page_scan_interval; 393 __u16 page_scan_window; 394 __u8 page_scan_type; 395 __u8 le_adv_channel_map; 396 __u16 le_adv_min_interval; 397 __u16 le_adv_max_interval; 398 __u8 le_scan_type; 399 __u16 le_scan_interval; 400 __u16 le_scan_window; 401 __u16 le_scan_int_suspend; 402 __u16 le_scan_window_suspend; 403 __u16 le_scan_int_discovery; 404 __u16 le_scan_window_discovery; 405 __u16 le_scan_int_adv_monitor; 406 __u16 le_scan_window_adv_monitor; 407 __u16 le_scan_int_connect; 408 __u16 le_scan_window_connect; 409 __u16 le_conn_min_interval; 410 __u16 le_conn_max_interval; 411 __u16 le_conn_latency; 412 __u16 le_supv_timeout; 413 __u16 le_def_tx_len; 414 __u16 le_def_tx_time; 415 __u16 le_max_tx_len; 416 __u16 le_max_tx_time; 417 __u16 le_max_rx_len; 418 __u16 le_max_rx_time; 419 __u8 le_max_key_size; 420 __u8 le_min_key_size; 421 __u16 discov_interleaved_timeout; 422 __u16 conn_info_min_age; 423 __u16 conn_info_max_age; 424 __u16 auth_payload_timeout; 425 __u8 min_enc_key_size; 426 __u8 max_enc_key_size; 427 __u8 pairing_opts; 428 __u8 ssp_debug_mode; 429 __u8 hw_error_code; 430 __u32 clock; 431 __u16 advmon_allowlist_duration; 432 __u16 advmon_no_filter_duration; 433 __u8 enable_advmon_interleave_scan; 434 435 __u16 devid_source; 436 __u16 devid_vendor; 437 __u16 devid_product; 438 __u16 devid_version; 439 440 __u8 def_page_scan_type; 441 __u16 def_page_scan_int; 442 __u16 def_page_scan_window; 443 __u8 def_inq_scan_type; 444 __u16 def_inq_scan_int; 445 __u16 def_inq_scan_window; 446 __u16 def_br_lsto; 447 __u16 def_page_timeout; 448 __u16 def_multi_adv_rotation_duration; 449 __u16 def_le_autoconnect_timeout; 450 __s8 min_le_tx_power; 451 __s8 max_le_tx_power; 452 453 __u16 pkt_type; 454 __u16 esco_type; 455 __u16 link_policy; 456 __u16 link_mode; 457 458 __u32 idle_timeout; 459 __u16 sniff_min_interval; 460 __u16 sniff_max_interval; 461 462 __u8 amp_status; 463 __u32 amp_total_bw; 464 __u32 amp_max_bw; 465 __u32 amp_min_latency; 466 __u32 amp_max_pdu; 467 __u8 amp_type; 468 __u16 amp_pal_cap; 469 __u16 amp_assoc_size; 470 __u32 amp_max_flush_to; 471 __u32 amp_be_flush_to; 472 473 struct amp_assoc loc_assoc; 474 475 __u8 flow_ctl_mode; 476 477 unsigned int auto_accept_delay; 478 479 unsigned long quirks; 480 481 atomic_t cmd_cnt; 482 unsigned int acl_cnt; 483 unsigned int sco_cnt; 484 unsigned int le_cnt; 485 unsigned int iso_cnt; 486 487 unsigned int acl_mtu; 488 unsigned int sco_mtu; 489 unsigned int le_mtu; 490 unsigned int iso_mtu; 491 unsigned int acl_pkts; 492 unsigned int sco_pkts; 493 unsigned int le_pkts; 494 unsigned int iso_pkts; 495 496 __u16 block_len; 497 __u16 block_mtu; 498 __u16 num_blocks; 499 __u16 block_cnt; 500 501 unsigned long acl_last_tx; 502 unsigned long sco_last_tx; 503 unsigned long le_last_tx; 504 505 __u8 le_tx_def_phys; 506 __u8 le_rx_def_phys; 507 508 struct workqueue_struct *workqueue; 509 struct workqueue_struct *req_workqueue; 510 511 struct work_struct power_on; 512 struct delayed_work power_off; 513 struct work_struct error_reset; 514 struct work_struct cmd_sync_work; 515 struct list_head cmd_sync_work_list; 516 struct mutex cmd_sync_work_lock; 517 struct work_struct cmd_sync_cancel_work; 518 struct work_struct reenable_adv_work; 519 520 __u16 discov_timeout; 521 struct delayed_work discov_off; 522 523 struct delayed_work service_cache; 524 525 struct delayed_work cmd_timer; 526 struct delayed_work ncmd_timer; 527 528 struct work_struct rx_work; 529 struct work_struct cmd_work; 530 struct work_struct tx_work; 531 532 struct delayed_work le_scan_disable; 533 struct delayed_work le_scan_restart; 534 535 struct sk_buff_head rx_q; 536 struct sk_buff_head raw_q; 537 struct sk_buff_head cmd_q; 538 539 struct sk_buff *sent_cmd; 540 struct sk_buff *recv_event; 541 542 struct mutex req_lock; 543 wait_queue_head_t req_wait_q; 544 __u32 req_status; 545 __u32 req_result; 546 struct sk_buff *req_skb; 547 548 void *smp_data; 549 void *smp_bredr_data; 550 551 struct discovery_state discovery; 552 553 int discovery_old_state; 554 bool discovery_paused; 555 int advertising_old_state; 556 bool advertising_paused; 557 558 struct notifier_block suspend_notifier; 559 enum suspended_state suspend_state_next; 560 enum suspended_state suspend_state; 561 bool scanning_paused; 562 bool suspended; 563 u8 wake_reason; 564 bdaddr_t wake_addr; 565 u8 wake_addr_type; 566 567 struct hci_conn_hash conn_hash; 568 569 struct list_head mesh_pending; 570 struct list_head mgmt_pending; 571 struct list_head reject_list; 572 struct list_head accept_list; 573 struct list_head uuids; 574 struct list_head link_keys; 575 struct list_head long_term_keys; 576 struct list_head identity_resolving_keys; 577 struct list_head remote_oob_data; 578 struct list_head le_accept_list; 579 struct list_head le_resolv_list; 580 struct list_head le_conn_params; 581 struct list_head pend_le_conns; 582 struct list_head pend_le_reports; 583 struct list_head blocked_keys; 584 struct list_head local_codecs; 585 586 struct hci_dev_stats stat; 587 588 atomic_t promisc; 589 590 const char *hw_info; 591 const char *fw_info; 592 struct dentry *debugfs; 593 594 #ifdef CONFIG_DEV_COREDUMP 595 struct hci_devcoredump dump; 596 #endif 597 598 struct device dev; 599 600 struct rfkill *rfkill; 601 602 DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS); 603 hci_conn_flags_t conn_flags; 604 605 __s8 adv_tx_power; 606 __u8 adv_data[HCI_MAX_EXT_AD_LENGTH]; 607 __u8 adv_data_len; 608 __u8 scan_rsp_data[HCI_MAX_EXT_AD_LENGTH]; 609 __u8 scan_rsp_data_len; 610 __u8 per_adv_data[HCI_MAX_PER_AD_LENGTH]; 611 __u8 per_adv_data_len; 612 613 struct list_head adv_instances; 614 unsigned int adv_instance_cnt; 615 __u8 cur_adv_instance; 616 __u16 adv_instance_timeout; 617 struct delayed_work adv_instance_expire; 618 619 struct idr adv_monitors_idr; 620 unsigned int adv_monitors_cnt; 621 622 __u8 irk[16]; 623 __u32 rpa_timeout; 624 struct delayed_work rpa_expired; 625 bdaddr_t rpa; 626 627 struct delayed_work mesh_send_done; 628 629 enum { 630 INTERLEAVE_SCAN_NONE, 631 INTERLEAVE_SCAN_NO_FILTER, 632 INTERLEAVE_SCAN_ALLOWLIST 633 } interleave_scan_state; 634 635 struct delayed_work interleave_scan; 636 637 struct list_head monitored_devices; 638 bool advmon_pend_notify; 639 640 #if IS_ENABLED(CONFIG_BT_LEDS) 641 struct led_trigger *power_led; 642 #endif 643 644 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 645 __u16 msft_opcode; 646 void *msft_data; 647 bool msft_curve_validity; 648 #endif 649 650 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 651 bool aosp_capable; 652 bool aosp_quality_report; 653 #endif 654 655 int (*open)(struct hci_dev *hdev); 656 int (*close)(struct hci_dev *hdev); 657 int (*flush)(struct hci_dev *hdev); 658 int (*setup)(struct hci_dev *hdev); 659 int (*shutdown)(struct hci_dev *hdev); 660 int (*send)(struct hci_dev *hdev, struct sk_buff *skb); 661 void (*notify)(struct hci_dev *hdev, unsigned int evt); 662 void (*hw_error)(struct hci_dev *hdev, u8 code); 663 int (*post_init)(struct hci_dev *hdev); 664 int (*set_diag)(struct hci_dev *hdev, bool enable); 665 int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr); 666 void (*cmd_timeout)(struct hci_dev *hdev); 667 void (*reset)(struct hci_dev *hdev); 668 bool (*wakeup)(struct hci_dev *hdev); 669 int (*set_quality_report)(struct hci_dev *hdev, bool enable); 670 int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path); 671 int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type, 672 struct bt_codec *codec, __u8 *vnd_len, 673 __u8 **vnd_data); 674 }; 675 676 #define HCI_PHY_HANDLE(handle) (handle & 0xff) 677 678 enum conn_reasons { 679 CONN_REASON_PAIR_DEVICE, 680 CONN_REASON_L2CAP_CHAN, 681 CONN_REASON_SCO_CONNECT, 682 CONN_REASON_ISO_CONNECT, 683 }; 684 685 struct hci_conn { 686 struct list_head list; 687 688 atomic_t refcnt; 689 690 bdaddr_t dst; 691 __u8 dst_type; 692 bdaddr_t src; 693 __u8 src_type; 694 bdaddr_t init_addr; 695 __u8 init_addr_type; 696 bdaddr_t resp_addr; 697 __u8 resp_addr_type; 698 __u8 adv_instance; 699 __u16 handle; 700 __u16 sync_handle; 701 __u16 state; 702 __u8 mode; 703 __u8 type; 704 __u8 role; 705 bool out; 706 __u8 attempt; 707 __u8 dev_class[3]; 708 __u8 features[HCI_MAX_PAGES][8]; 709 __u16 pkt_type; 710 __u16 link_policy; 711 __u8 key_type; 712 __u8 auth_type; 713 __u8 sec_level; 714 __u8 pending_sec_level; 715 __u8 pin_length; 716 __u8 enc_key_size; 717 __u8 io_capability; 718 __u32 passkey_notify; 719 __u8 passkey_entered; 720 __u16 disc_timeout; 721 __u16 conn_timeout; 722 __u16 setting; 723 __u16 auth_payload_timeout; 724 __u16 le_conn_min_interval; 725 __u16 le_conn_max_interval; 726 __u16 le_conn_interval; 727 __u16 le_conn_latency; 728 __u16 le_supv_timeout; 729 __u8 le_adv_data[HCI_MAX_AD_LENGTH]; 730 __u8 le_adv_data_len; 731 __u8 le_per_adv_data[HCI_MAX_PER_AD_LENGTH]; 732 __u8 le_per_adv_data_len; 733 __u8 le_tx_phy; 734 __u8 le_rx_phy; 735 __s8 rssi; 736 __s8 tx_power; 737 __s8 max_tx_power; 738 struct bt_iso_qos iso_qos; 739 unsigned long flags; 740 741 enum conn_reasons conn_reason; 742 743 __u32 clock; 744 __u16 clock_accuracy; 745 746 unsigned long conn_info_timestamp; 747 748 __u8 remote_cap; 749 __u8 remote_auth; 750 __u8 remote_id; 751 752 unsigned int sent; 753 754 struct sk_buff_head data_q; 755 struct list_head chan_list; 756 757 struct delayed_work disc_work; 758 struct delayed_work auto_accept_work; 759 struct delayed_work idle_work; 760 struct delayed_work le_conn_timeout; 761 struct work_struct le_scan_cleanup; 762 763 struct device dev; 764 struct dentry *debugfs; 765 766 struct hci_dev *hdev; 767 void *l2cap_data; 768 void *sco_data; 769 void *iso_data; 770 struct amp_mgr *amp_mgr; 771 772 struct hci_conn *link; 773 struct bt_codec codec; 774 775 void (*connect_cfm_cb) (struct hci_conn *conn, u8 status); 776 void (*security_cfm_cb) (struct hci_conn *conn, u8 status); 777 void (*disconn_cfm_cb) (struct hci_conn *conn, u8 reason); 778 779 void (*cleanup)(struct hci_conn *conn); 780 }; 781 782 struct hci_chan { 783 struct list_head list; 784 __u16 handle; 785 struct hci_conn *conn; 786 struct sk_buff_head data_q; 787 unsigned int sent; 788 __u8 state; 789 bool amp; 790 }; 791 792 struct hci_conn_params { 793 struct list_head list; 794 struct list_head action; 795 796 bdaddr_t addr; 797 u8 addr_type; 798 799 u16 conn_min_interval; 800 u16 conn_max_interval; 801 u16 conn_latency; 802 u16 supervision_timeout; 803 804 enum { 805 HCI_AUTO_CONN_DISABLED, 806 HCI_AUTO_CONN_REPORT, 807 HCI_AUTO_CONN_DIRECT, 808 HCI_AUTO_CONN_ALWAYS, 809 HCI_AUTO_CONN_LINK_LOSS, 810 HCI_AUTO_CONN_EXPLICIT, 811 } auto_connect; 812 813 struct hci_conn *conn; 814 bool explicit_connect; 815 hci_conn_flags_t flags; 816 u8 privacy_mode; 817 }; 818 819 extern struct list_head hci_dev_list; 820 extern struct list_head hci_cb_list; 821 extern rwlock_t hci_dev_list_lock; 822 extern struct mutex hci_cb_list_lock; 823 824 #define hci_dev_set_flag(hdev, nr) set_bit((nr), (hdev)->dev_flags) 825 #define hci_dev_clear_flag(hdev, nr) clear_bit((nr), (hdev)->dev_flags) 826 #define hci_dev_change_flag(hdev, nr) change_bit((nr), (hdev)->dev_flags) 827 #define hci_dev_test_flag(hdev, nr) test_bit((nr), (hdev)->dev_flags) 828 #define hci_dev_test_and_set_flag(hdev, nr) test_and_set_bit((nr), (hdev)->dev_flags) 829 #define hci_dev_test_and_clear_flag(hdev, nr) test_and_clear_bit((nr), (hdev)->dev_flags) 830 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags) 831 832 #define hci_dev_clear_volatile_flags(hdev) \ 833 do { \ 834 hci_dev_clear_flag(hdev, HCI_LE_SCAN); \ 835 hci_dev_clear_flag(hdev, HCI_LE_ADV); \ 836 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\ 837 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ); \ 838 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT); \ 839 } while (0) 840 841 #define hci_dev_le_state_simultaneous(hdev) \ 842 (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \ 843 (hdev->le_states[4] & 0x08) && /* Central */ \ 844 (hdev->le_states[4] & 0x40) && /* Peripheral */ \ 845 (hdev->le_states[3] & 0x10)) /* Simultaneous */ 846 847 /* ----- HCI interface to upper protocols ----- */ 848 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr); 849 int l2cap_disconn_ind(struct hci_conn *hcon); 850 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 851 852 #if IS_ENABLED(CONFIG_BT_BREDR) 853 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 854 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb); 855 #else 856 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 857 __u8 *flags) 858 { 859 return 0; 860 } 861 862 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb) 863 { 864 } 865 #endif 866 867 #if IS_ENABLED(CONFIG_BT_LE) 868 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags); 869 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags); 870 #else 871 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 872 __u8 *flags) 873 { 874 return 0; 875 } 876 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, 877 u16 flags) 878 { 879 } 880 #endif 881 882 /* ----- Inquiry cache ----- */ 883 #define INQUIRY_CACHE_AGE_MAX (HZ*30) /* 30 seconds */ 884 #define INQUIRY_ENTRY_AGE_MAX (HZ*60) /* 60 seconds */ 885 886 static inline void discovery_init(struct hci_dev *hdev) 887 { 888 hdev->discovery.state = DISCOVERY_STOPPED; 889 INIT_LIST_HEAD(&hdev->discovery.all); 890 INIT_LIST_HEAD(&hdev->discovery.unknown); 891 INIT_LIST_HEAD(&hdev->discovery.resolve); 892 hdev->discovery.report_invalid_rssi = true; 893 hdev->discovery.rssi = HCI_RSSI_INVALID; 894 } 895 896 static inline void hci_discovery_filter_clear(struct hci_dev *hdev) 897 { 898 hdev->discovery.result_filtering = false; 899 hdev->discovery.report_invalid_rssi = true; 900 hdev->discovery.rssi = HCI_RSSI_INVALID; 901 hdev->discovery.uuid_count = 0; 902 kfree(hdev->discovery.uuids); 903 hdev->discovery.uuids = NULL; 904 hdev->discovery.scan_start = 0; 905 hdev->discovery.scan_duration = 0; 906 } 907 908 bool hci_discovery_active(struct hci_dev *hdev); 909 910 void hci_discovery_set_state(struct hci_dev *hdev, int state); 911 912 static inline int inquiry_cache_empty(struct hci_dev *hdev) 913 { 914 return list_empty(&hdev->discovery.all); 915 } 916 917 static inline long inquiry_cache_age(struct hci_dev *hdev) 918 { 919 struct discovery_state *c = &hdev->discovery; 920 return jiffies - c->timestamp; 921 } 922 923 static inline long inquiry_entry_age(struct inquiry_entry *e) 924 { 925 return jiffies - e->timestamp; 926 } 927 928 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, 929 bdaddr_t *bdaddr); 930 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev, 931 bdaddr_t *bdaddr); 932 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev, 933 bdaddr_t *bdaddr, 934 int state); 935 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev, 936 struct inquiry_entry *ie); 937 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data, 938 bool name_known); 939 void hci_inquiry_cache_flush(struct hci_dev *hdev); 940 941 /* ----- HCI Connections ----- */ 942 enum { 943 HCI_CONN_AUTH_PEND, 944 HCI_CONN_REAUTH_PEND, 945 HCI_CONN_ENCRYPT_PEND, 946 HCI_CONN_RSWITCH_PEND, 947 HCI_CONN_MODE_CHANGE_PEND, 948 HCI_CONN_SCO_SETUP_PEND, 949 HCI_CONN_MGMT_CONNECTED, 950 HCI_CONN_SSP_ENABLED, 951 HCI_CONN_SC_ENABLED, 952 HCI_CONN_AES_CCM, 953 HCI_CONN_POWER_SAVE, 954 HCI_CONN_FLUSH_KEY, 955 HCI_CONN_ENCRYPT, 956 HCI_CONN_AUTH, 957 HCI_CONN_SECURE, 958 HCI_CONN_FIPS, 959 HCI_CONN_STK_ENCRYPT, 960 HCI_CONN_AUTH_INITIATOR, 961 HCI_CONN_DROP, 962 HCI_CONN_CANCEL, 963 HCI_CONN_PARAM_REMOVAL_PEND, 964 HCI_CONN_NEW_LINK_KEY, 965 HCI_CONN_SCANNING, 966 HCI_CONN_AUTH_FAILURE, 967 HCI_CONN_PER_ADV, 968 }; 969 970 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn) 971 { 972 struct hci_dev *hdev = conn->hdev; 973 return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) && 974 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags); 975 } 976 977 static inline bool hci_conn_sc_enabled(struct hci_conn *conn) 978 { 979 struct hci_dev *hdev = conn->hdev; 980 return hci_dev_test_flag(hdev, HCI_SC_ENABLED) && 981 test_bit(HCI_CONN_SC_ENABLED, &conn->flags); 982 } 983 984 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c) 985 { 986 struct hci_conn_hash *h = &hdev->conn_hash; 987 list_add_tail_rcu(&c->list, &h->list); 988 switch (c->type) { 989 case ACL_LINK: 990 h->acl_num++; 991 break; 992 case AMP_LINK: 993 h->amp_num++; 994 break; 995 case LE_LINK: 996 h->le_num++; 997 if (c->role == HCI_ROLE_SLAVE) 998 h->le_num_peripheral++; 999 break; 1000 case SCO_LINK: 1001 case ESCO_LINK: 1002 h->sco_num++; 1003 break; 1004 case ISO_LINK: 1005 h->iso_num++; 1006 break; 1007 } 1008 } 1009 1010 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c) 1011 { 1012 struct hci_conn_hash *h = &hdev->conn_hash; 1013 1014 list_del_rcu(&c->list); 1015 synchronize_rcu(); 1016 1017 switch (c->type) { 1018 case ACL_LINK: 1019 h->acl_num--; 1020 break; 1021 case AMP_LINK: 1022 h->amp_num--; 1023 break; 1024 case LE_LINK: 1025 h->le_num--; 1026 if (c->role == HCI_ROLE_SLAVE) 1027 h->le_num_peripheral--; 1028 break; 1029 case SCO_LINK: 1030 case ESCO_LINK: 1031 h->sco_num--; 1032 break; 1033 case ISO_LINK: 1034 h->iso_num--; 1035 break; 1036 } 1037 } 1038 1039 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type) 1040 { 1041 struct hci_conn_hash *h = &hdev->conn_hash; 1042 switch (type) { 1043 case ACL_LINK: 1044 return h->acl_num; 1045 case AMP_LINK: 1046 return h->amp_num; 1047 case LE_LINK: 1048 return h->le_num; 1049 case SCO_LINK: 1050 case ESCO_LINK: 1051 return h->sco_num; 1052 case ISO_LINK: 1053 return h->iso_num; 1054 default: 1055 return 0; 1056 } 1057 } 1058 1059 static inline unsigned int hci_conn_count(struct hci_dev *hdev) 1060 { 1061 struct hci_conn_hash *c = &hdev->conn_hash; 1062 1063 return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num; 1064 } 1065 1066 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle) 1067 { 1068 struct hci_conn_hash *h = &hdev->conn_hash; 1069 struct hci_conn *c; 1070 __u8 type = INVALID_LINK; 1071 1072 rcu_read_lock(); 1073 1074 list_for_each_entry_rcu(c, &h->list, list) { 1075 if (c->handle == handle) { 1076 type = c->type; 1077 break; 1078 } 1079 } 1080 1081 rcu_read_unlock(); 1082 1083 return type; 1084 } 1085 1086 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev, 1087 bdaddr_t *ba, 1088 __u8 big, __u8 bis) 1089 { 1090 struct hci_conn_hash *h = &hdev->conn_hash; 1091 struct hci_conn *c; 1092 1093 rcu_read_lock(); 1094 1095 list_for_each_entry_rcu(c, &h->list, list) { 1096 if (bacmp(&c->dst, ba) || c->type != ISO_LINK) 1097 continue; 1098 1099 if (c->iso_qos.big == big && c->iso_qos.bis == bis) { 1100 rcu_read_unlock(); 1101 return c; 1102 } 1103 } 1104 rcu_read_unlock(); 1105 1106 return NULL; 1107 } 1108 1109 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev, 1110 __u16 handle) 1111 { 1112 struct hci_conn_hash *h = &hdev->conn_hash; 1113 struct hci_conn *c; 1114 1115 rcu_read_lock(); 1116 1117 list_for_each_entry_rcu(c, &h->list, list) { 1118 if (c->handle == handle) { 1119 rcu_read_unlock(); 1120 return c; 1121 } 1122 } 1123 rcu_read_unlock(); 1124 1125 return NULL; 1126 } 1127 1128 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev, 1129 __u8 type, bdaddr_t *ba) 1130 { 1131 struct hci_conn_hash *h = &hdev->conn_hash; 1132 struct hci_conn *c; 1133 1134 rcu_read_lock(); 1135 1136 list_for_each_entry_rcu(c, &h->list, list) { 1137 if (c->type == type && !bacmp(&c->dst, ba)) { 1138 rcu_read_unlock(); 1139 return c; 1140 } 1141 } 1142 1143 rcu_read_unlock(); 1144 1145 return NULL; 1146 } 1147 1148 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev, 1149 bdaddr_t *ba, 1150 __u8 ba_type) 1151 { 1152 struct hci_conn_hash *h = &hdev->conn_hash; 1153 struct hci_conn *c; 1154 1155 rcu_read_lock(); 1156 1157 list_for_each_entry_rcu(c, &h->list, list) { 1158 if (c->type != LE_LINK) 1159 continue; 1160 1161 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1162 rcu_read_unlock(); 1163 return c; 1164 } 1165 } 1166 1167 rcu_read_unlock(); 1168 1169 return NULL; 1170 } 1171 1172 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev, 1173 bdaddr_t *ba, 1174 __u8 ba_type) 1175 { 1176 struct hci_conn_hash *h = &hdev->conn_hash; 1177 struct hci_conn *c; 1178 1179 rcu_read_lock(); 1180 1181 list_for_each_entry_rcu(c, &h->list, list) { 1182 if (c->type != ISO_LINK) 1183 continue; 1184 1185 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) { 1186 rcu_read_unlock(); 1187 return c; 1188 } 1189 } 1190 1191 rcu_read_unlock(); 1192 1193 return NULL; 1194 } 1195 1196 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev, 1197 __u8 handle) 1198 { 1199 struct hci_conn_hash *h = &hdev->conn_hash; 1200 struct hci_conn *c; 1201 1202 rcu_read_lock(); 1203 1204 list_for_each_entry_rcu(c, &h->list, list) { 1205 if (c->type != ISO_LINK) 1206 continue; 1207 1208 if (handle == c->iso_qos.cig) { 1209 rcu_read_unlock(); 1210 return c; 1211 } 1212 } 1213 1214 rcu_read_unlock(); 1215 1216 return NULL; 1217 } 1218 1219 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev, 1220 __u8 handle) 1221 { 1222 struct hci_conn_hash *h = &hdev->conn_hash; 1223 struct hci_conn *c; 1224 1225 rcu_read_lock(); 1226 1227 list_for_each_entry_rcu(c, &h->list, list) { 1228 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK) 1229 continue; 1230 1231 if (handle == c->iso_qos.big) { 1232 rcu_read_unlock(); 1233 return c; 1234 } 1235 } 1236 1237 rcu_read_unlock(); 1238 1239 return NULL; 1240 } 1241 1242 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev, 1243 __u8 type, __u16 state) 1244 { 1245 struct hci_conn_hash *h = &hdev->conn_hash; 1246 struct hci_conn *c; 1247 1248 rcu_read_lock(); 1249 1250 list_for_each_entry_rcu(c, &h->list, list) { 1251 if (c->type == type && c->state == state) { 1252 rcu_read_unlock(); 1253 return c; 1254 } 1255 } 1256 1257 rcu_read_unlock(); 1258 1259 return NULL; 1260 } 1261 1262 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data); 1263 static inline void hci_conn_hash_list_state(struct hci_dev *hdev, 1264 hci_conn_func_t func, __u8 type, 1265 __u16 state, void *data) 1266 { 1267 struct hci_conn_hash *h = &hdev->conn_hash; 1268 struct hci_conn *c; 1269 1270 if (!func) 1271 return; 1272 1273 rcu_read_lock(); 1274 1275 list_for_each_entry_rcu(c, &h->list, list) { 1276 if (c->type == type && c->state == state) 1277 func(c, data); 1278 } 1279 1280 rcu_read_unlock(); 1281 } 1282 1283 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev) 1284 { 1285 struct hci_conn_hash *h = &hdev->conn_hash; 1286 struct hci_conn *c; 1287 1288 rcu_read_lock(); 1289 1290 list_for_each_entry_rcu(c, &h->list, list) { 1291 if (c->type == LE_LINK && c->state == BT_CONNECT && 1292 !test_bit(HCI_CONN_SCANNING, &c->flags)) { 1293 rcu_read_unlock(); 1294 return c; 1295 } 1296 } 1297 1298 rcu_read_unlock(); 1299 1300 return NULL; 1301 } 1302 1303 int hci_disconnect(struct hci_conn *conn, __u8 reason); 1304 bool hci_setup_sync(struct hci_conn *conn, __u16 handle); 1305 void hci_sco_setup(struct hci_conn *conn, __u8 status); 1306 bool hci_iso_setup_path(struct hci_conn *conn); 1307 int hci_le_create_cis(struct hci_conn *conn); 1308 1309 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst, 1310 u8 role); 1311 int hci_conn_del(struct hci_conn *conn); 1312 void hci_conn_hash_flush(struct hci_dev *hdev); 1313 void hci_conn_check_pending(struct hci_dev *hdev); 1314 1315 struct hci_chan *hci_chan_create(struct hci_conn *conn); 1316 void hci_chan_del(struct hci_chan *chan); 1317 void hci_chan_list_flush(struct hci_conn *conn); 1318 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle); 1319 1320 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst, 1321 u8 dst_type, u8 sec_level, 1322 u16 conn_timeout, 1323 enum conn_reasons conn_reason); 1324 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst, 1325 u8 dst_type, bool dst_resolved, u8 sec_level, 1326 u16 conn_timeout, u8 role); 1327 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst, 1328 u8 sec_level, u8 auth_type, 1329 enum conn_reasons conn_reason); 1330 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst, 1331 __u16 setting, struct bt_codec *codec); 1332 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst, 1333 __u8 dst_type, struct bt_iso_qos *qos); 1334 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst, 1335 __u8 dst_type, struct bt_iso_qos *qos); 1336 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst, 1337 __u8 dst_type, struct bt_iso_qos *qos, 1338 __u8 data_len, __u8 *data); 1339 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type, 1340 __u8 sid); 1341 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos, 1342 __u16 sync_handle, __u8 num_bis, __u8 bis[]); 1343 int hci_conn_check_link_mode(struct hci_conn *conn); 1344 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level); 1345 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type, 1346 bool initiator); 1347 int hci_conn_switch_role(struct hci_conn *conn, __u8 role); 1348 1349 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active); 1350 1351 void hci_conn_failed(struct hci_conn *conn, u8 status); 1352 1353 /* 1354 * hci_conn_get() and hci_conn_put() are used to control the life-time of an 1355 * "hci_conn" object. They do not guarantee that the hci_conn object is running, 1356 * working or anything else. They just guarantee that the object is available 1357 * and can be dereferenced. So you can use its locks, local variables and any 1358 * other constant data. 1359 * Before accessing runtime data, you _must_ lock the object and then check that 1360 * it is still running. As soon as you release the locks, the connection might 1361 * get dropped, though. 1362 * 1363 * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control 1364 * how long the underlying connection is held. So every channel that runs on the 1365 * hci_conn object calls this to prevent the connection from disappearing. As 1366 * long as you hold a device, you must also guarantee that you have a valid 1367 * reference to the device via hci_conn_get() (or the initial reference from 1368 * hci_conn_add()). 1369 * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't 1370 * break because nobody cares for that. But this means, we cannot use 1371 * _get()/_drop() in it, but require the caller to have a valid ref (FIXME). 1372 */ 1373 1374 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn) 1375 { 1376 get_device(&conn->dev); 1377 return conn; 1378 } 1379 1380 static inline void hci_conn_put(struct hci_conn *conn) 1381 { 1382 put_device(&conn->dev); 1383 } 1384 1385 static inline void hci_conn_hold(struct hci_conn *conn) 1386 { 1387 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1388 1389 atomic_inc(&conn->refcnt); 1390 cancel_delayed_work(&conn->disc_work); 1391 } 1392 1393 static inline void hci_conn_drop(struct hci_conn *conn) 1394 { 1395 BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt)); 1396 1397 if (atomic_dec_and_test(&conn->refcnt)) { 1398 unsigned long timeo; 1399 1400 switch (conn->type) { 1401 case ACL_LINK: 1402 case LE_LINK: 1403 cancel_delayed_work(&conn->idle_work); 1404 if (conn->state == BT_CONNECTED) { 1405 timeo = conn->disc_timeout; 1406 if (!conn->out) 1407 timeo *= 2; 1408 } else { 1409 timeo = 0; 1410 } 1411 break; 1412 1413 case AMP_LINK: 1414 timeo = conn->disc_timeout; 1415 break; 1416 1417 default: 1418 timeo = 0; 1419 break; 1420 } 1421 1422 cancel_delayed_work(&conn->disc_work); 1423 queue_delayed_work(conn->hdev->workqueue, 1424 &conn->disc_work, timeo); 1425 } 1426 } 1427 1428 /* ----- HCI Devices ----- */ 1429 static inline void hci_dev_put(struct hci_dev *d) 1430 { 1431 BT_DBG("%s orig refcnt %d", d->name, 1432 kref_read(&d->dev.kobj.kref)); 1433 1434 put_device(&d->dev); 1435 } 1436 1437 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d) 1438 { 1439 BT_DBG("%s orig refcnt %d", d->name, 1440 kref_read(&d->dev.kobj.kref)); 1441 1442 get_device(&d->dev); 1443 return d; 1444 } 1445 1446 #define hci_dev_lock(d) mutex_lock(&d->lock) 1447 #define hci_dev_unlock(d) mutex_unlock(&d->lock) 1448 1449 #define to_hci_dev(d) container_of(d, struct hci_dev, dev) 1450 #define to_hci_conn(c) container_of(c, struct hci_conn, dev) 1451 1452 static inline void *hci_get_drvdata(struct hci_dev *hdev) 1453 { 1454 return dev_get_drvdata(&hdev->dev); 1455 } 1456 1457 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data) 1458 { 1459 dev_set_drvdata(&hdev->dev, data); 1460 } 1461 1462 static inline void *hci_get_priv(struct hci_dev *hdev) 1463 { 1464 return (char *)hdev + sizeof(*hdev); 1465 } 1466 1467 struct hci_dev *hci_dev_get(int index); 1468 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type); 1469 1470 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv); 1471 1472 static inline struct hci_dev *hci_alloc_dev(void) 1473 { 1474 return hci_alloc_dev_priv(0); 1475 } 1476 1477 void hci_free_dev(struct hci_dev *hdev); 1478 int hci_register_dev(struct hci_dev *hdev); 1479 void hci_unregister_dev(struct hci_dev *hdev); 1480 void hci_release_dev(struct hci_dev *hdev); 1481 int hci_register_suspend_notifier(struct hci_dev *hdev); 1482 int hci_unregister_suspend_notifier(struct hci_dev *hdev); 1483 int hci_suspend_dev(struct hci_dev *hdev); 1484 int hci_resume_dev(struct hci_dev *hdev); 1485 int hci_reset_dev(struct hci_dev *hdev); 1486 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb); 1487 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb); 1488 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...); 1489 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...); 1490 1491 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode) 1492 { 1493 #if IS_ENABLED(CONFIG_BT_MSFTEXT) 1494 hdev->msft_opcode = opcode; 1495 #endif 1496 } 1497 1498 static inline void hci_set_aosp_capable(struct hci_dev *hdev) 1499 { 1500 #if IS_ENABLED(CONFIG_BT_AOSPEXT) 1501 hdev->aosp_capable = true; 1502 #endif 1503 } 1504 1505 static inline void hci_devcd_setup(struct hci_dev *hdev) 1506 { 1507 #ifdef CONFIG_DEV_COREDUMP 1508 INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx); 1509 INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout); 1510 skb_queue_head_init(&hdev->dump.dump_q); 1511 #endif 1512 } 1513 1514 int hci_dev_open(__u16 dev); 1515 int hci_dev_close(__u16 dev); 1516 int hci_dev_do_close(struct hci_dev *hdev); 1517 int hci_dev_reset(__u16 dev); 1518 int hci_dev_reset_stat(__u16 dev); 1519 int hci_dev_cmd(unsigned int cmd, void __user *arg); 1520 int hci_get_dev_list(void __user *arg); 1521 int hci_get_dev_info(void __user *arg); 1522 int hci_get_conn_list(void __user *arg); 1523 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg); 1524 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg); 1525 int hci_inquiry(void __user *arg); 1526 1527 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list, 1528 bdaddr_t *bdaddr, u8 type); 1529 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk( 1530 struct list_head *list, bdaddr_t *bdaddr, 1531 u8 type); 1532 struct bdaddr_list_with_flags * 1533 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1534 u8 type); 1535 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1536 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1537 u8 type, u8 *peer_irk, u8 *local_irk); 1538 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1539 u8 type, u32 flags); 1540 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type); 1541 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr, 1542 u8 type); 1543 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr, 1544 u8 type); 1545 void hci_bdaddr_list_clear(struct list_head *list); 1546 1547 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev, 1548 bdaddr_t *addr, u8 addr_type); 1549 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev, 1550 bdaddr_t *addr, u8 addr_type); 1551 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type); 1552 void hci_conn_params_clear_disabled(struct hci_dev *hdev); 1553 1554 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list, 1555 bdaddr_t *addr, 1556 u8 addr_type); 1557 1558 void hci_uuids_clear(struct hci_dev *hdev); 1559 1560 void hci_link_keys_clear(struct hci_dev *hdev); 1561 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1562 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, 1563 bdaddr_t *bdaddr, u8 *val, u8 type, 1564 u8 pin_len, bool *persistent); 1565 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1566 u8 addr_type, u8 type, u8 authenticated, 1567 u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand); 1568 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1569 u8 addr_type, u8 role); 1570 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type); 1571 void hci_smp_ltks_clear(struct hci_dev *hdev); 1572 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr); 1573 1574 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa); 1575 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr, 1576 u8 addr_type); 1577 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, 1578 u8 addr_type, u8 val[16], bdaddr_t *rpa); 1579 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type); 1580 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]); 1581 void hci_blocked_keys_clear(struct hci_dev *hdev); 1582 void hci_smp_irks_clear(struct hci_dev *hdev); 1583 1584 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type); 1585 1586 void hci_remote_oob_data_clear(struct hci_dev *hdev); 1587 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev, 1588 bdaddr_t *bdaddr, u8 bdaddr_type); 1589 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1590 u8 bdaddr_type, u8 *hash192, u8 *rand192, 1591 u8 *hash256, u8 *rand256); 1592 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, 1593 u8 bdaddr_type); 1594 1595 void hci_adv_instances_clear(struct hci_dev *hdev); 1596 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance); 1597 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance); 1598 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance, 1599 u32 flags, u16 adv_data_len, u8 *adv_data, 1600 u16 scan_rsp_len, u8 *scan_rsp_data, 1601 u16 timeout, u16 duration, s8 tx_power, 1602 u32 min_interval, u32 max_interval, 1603 u8 mesh_handle); 1604 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance, 1605 u32 flags, u8 data_len, u8 *data, 1606 u32 min_interval, u32 max_interval); 1607 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance, 1608 u16 adv_data_len, u8 *adv_data, 1609 u16 scan_rsp_len, u8 *scan_rsp_data); 1610 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance); 1611 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired); 1612 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance); 1613 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance); 1614 1615 void hci_adv_monitors_clear(struct hci_dev *hdev); 1616 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1617 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor); 1618 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle); 1619 int hci_remove_all_adv_monitor(struct hci_dev *hdev); 1620 bool hci_is_adv_monitoring(struct hci_dev *hdev); 1621 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev); 1622 1623 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb); 1624 1625 void hci_init_sysfs(struct hci_dev *hdev); 1626 void hci_conn_init_sysfs(struct hci_conn *conn); 1627 void hci_conn_add_sysfs(struct hci_conn *conn); 1628 void hci_conn_del_sysfs(struct hci_conn *conn); 1629 1630 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev)) 1631 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent) 1632 1633 /* ----- LMP capabilities ----- */ 1634 #define lmp_encrypt_capable(dev) ((dev)->features[0][0] & LMP_ENCRYPT) 1635 #define lmp_rswitch_capable(dev) ((dev)->features[0][0] & LMP_RSWITCH) 1636 #define lmp_hold_capable(dev) ((dev)->features[0][0] & LMP_HOLD) 1637 #define lmp_sniff_capable(dev) ((dev)->features[0][0] & LMP_SNIFF) 1638 #define lmp_park_capable(dev) ((dev)->features[0][1] & LMP_PARK) 1639 #define lmp_inq_rssi_capable(dev) ((dev)->features[0][3] & LMP_RSSI_INQ) 1640 #define lmp_esco_capable(dev) ((dev)->features[0][3] & LMP_ESCO) 1641 #define lmp_bredr_capable(dev) (!((dev)->features[0][4] & LMP_NO_BREDR)) 1642 #define lmp_le_capable(dev) ((dev)->features[0][4] & LMP_LE) 1643 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR) 1644 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC) 1645 #define lmp_esco_2m_capable(dev) ((dev)->features[0][5] & LMP_EDR_ESCO_2M) 1646 #define lmp_ext_inq_capable(dev) ((dev)->features[0][6] & LMP_EXT_INQ) 1647 #define lmp_le_br_capable(dev) (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR)) 1648 #define lmp_ssp_capable(dev) ((dev)->features[0][6] & LMP_SIMPLE_PAIR) 1649 #define lmp_no_flush_capable(dev) ((dev)->features[0][6] & LMP_NO_FLUSH) 1650 #define lmp_lsto_capable(dev) ((dev)->features[0][7] & LMP_LSTO) 1651 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR) 1652 #define lmp_ext_feat_capable(dev) ((dev)->features[0][7] & LMP_EXTFEATURES) 1653 #define lmp_transp_capable(dev) ((dev)->features[0][2] & LMP_TRANSPARENT) 1654 #define lmp_edr_2m_capable(dev) ((dev)->features[0][3] & LMP_EDR_2M) 1655 #define lmp_edr_3m_capable(dev) ((dev)->features[0][3] & LMP_EDR_3M) 1656 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT) 1657 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT) 1658 1659 /* ----- Extended LMP capabilities ----- */ 1660 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL) 1661 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL) 1662 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN) 1663 #define lmp_sync_scan_capable(dev) ((dev)->features[2][0] & LMP_SYNC_SCAN) 1664 #define lmp_sc_capable(dev) ((dev)->features[2][1] & LMP_SC) 1665 #define lmp_ping_capable(dev) ((dev)->features[2][1] & LMP_PING) 1666 1667 /* ----- Host capabilities ----- */ 1668 #define lmp_host_ssp_capable(dev) ((dev)->features[1][0] & LMP_HOST_SSP) 1669 #define lmp_host_sc_capable(dev) ((dev)->features[1][0] & LMP_HOST_SC) 1670 #define lmp_host_le_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE)) 1671 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR)) 1672 1673 #define hdev_is_powered(dev) (test_bit(HCI_UP, &(dev)->flags) && \ 1674 !hci_dev_test_flag(dev, HCI_AUTO_OFF)) 1675 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \ 1676 hci_dev_test_flag(dev, HCI_SC_ENABLED)) 1677 #define rpa_valid(dev) (bacmp(&dev->rpa, BDADDR_ANY) && \ 1678 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED)) 1679 #define adv_rpa_valid(adv) (bacmp(&adv->random_addr, BDADDR_ANY) && \ 1680 !adv->rpa_expired) 1681 1682 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \ 1683 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M)) 1684 1685 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \ 1686 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M)) 1687 1688 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \ 1689 ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED)) 1690 1691 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY) 1692 1693 /* Use LL Privacy based address resolution if supported */ 1694 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \ 1695 hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY)) 1696 1697 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \ 1698 (hdev->commands[39] & 0x04)) 1699 1700 /* Use enhanced synchronous connection if command is supported and its quirk 1701 * has not been set. 1702 */ 1703 #define enhanced_sync_conn_capable(dev) \ 1704 (((dev)->commands[29] & 0x08) && \ 1705 !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks)) 1706 1707 /* Use ext scanning if set ext scan param and ext scan enable is supported */ 1708 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \ 1709 ((dev)->commands[37] & 0x40) && \ 1710 !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks)) 1711 1712 /* Use ext create connection if command is supported */ 1713 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80) 1714 1715 /* Extended advertising support */ 1716 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV)) 1717 1718 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789: 1719 * 1720 * C24: Mandatory if the LE Controller supports Connection State and either 1721 * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported 1722 */ 1723 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \ 1724 ext_adv_capable(dev)) 1725 1726 /* Periodic advertising support */ 1727 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV)) 1728 1729 /* CIS Master/Slave and BIS support */ 1730 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev)) 1731 #define cis_capable(dev) \ 1732 (cis_central_capable(dev) || cis_peripheral_capable(dev)) 1733 #define cis_central_capable(dev) \ 1734 ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL) 1735 #define cis_peripheral_capable(dev) \ 1736 ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL) 1737 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER) 1738 1739 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \ 1740 (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks))) 1741 1742 /* ----- HCI protocols ----- */ 1743 #define HCI_PROTO_DEFER 0x01 1744 1745 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, 1746 __u8 type, __u8 *flags) 1747 { 1748 switch (type) { 1749 case ACL_LINK: 1750 return l2cap_connect_ind(hdev, bdaddr); 1751 1752 case SCO_LINK: 1753 case ESCO_LINK: 1754 return sco_connect_ind(hdev, bdaddr, flags); 1755 1756 case ISO_LINK: 1757 return iso_connect_ind(hdev, bdaddr, flags); 1758 1759 default: 1760 BT_ERR("unknown link type %d", type); 1761 return -EINVAL; 1762 } 1763 } 1764 1765 static inline int hci_proto_disconn_ind(struct hci_conn *conn) 1766 { 1767 if (conn->type != ACL_LINK && conn->type != LE_LINK) 1768 return HCI_ERROR_REMOTE_USER_TERM; 1769 1770 return l2cap_disconn_ind(conn); 1771 } 1772 1773 /* ----- HCI callbacks ----- */ 1774 struct hci_cb { 1775 struct list_head list; 1776 1777 char *name; 1778 1779 void (*connect_cfm) (struct hci_conn *conn, __u8 status); 1780 void (*disconn_cfm) (struct hci_conn *conn, __u8 status); 1781 void (*security_cfm) (struct hci_conn *conn, __u8 status, 1782 __u8 encrypt); 1783 void (*key_change_cfm) (struct hci_conn *conn, __u8 status); 1784 void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role); 1785 }; 1786 1787 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status) 1788 { 1789 struct hci_cb *cb; 1790 1791 mutex_lock(&hci_cb_list_lock); 1792 list_for_each_entry(cb, &hci_cb_list, list) { 1793 if (cb->connect_cfm) 1794 cb->connect_cfm(conn, status); 1795 } 1796 mutex_unlock(&hci_cb_list_lock); 1797 1798 if (conn->connect_cfm_cb) 1799 conn->connect_cfm_cb(conn, status); 1800 } 1801 1802 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason) 1803 { 1804 struct hci_cb *cb; 1805 1806 mutex_lock(&hci_cb_list_lock); 1807 list_for_each_entry(cb, &hci_cb_list, list) { 1808 if (cb->disconn_cfm) 1809 cb->disconn_cfm(conn, reason); 1810 } 1811 mutex_unlock(&hci_cb_list_lock); 1812 1813 if (conn->disconn_cfm_cb) 1814 conn->disconn_cfm_cb(conn, reason); 1815 } 1816 1817 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status) 1818 { 1819 struct hci_cb *cb; 1820 __u8 encrypt; 1821 1822 if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags)) 1823 return; 1824 1825 encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00; 1826 1827 mutex_lock(&hci_cb_list_lock); 1828 list_for_each_entry(cb, &hci_cb_list, list) { 1829 if (cb->security_cfm) 1830 cb->security_cfm(conn, status, encrypt); 1831 } 1832 mutex_unlock(&hci_cb_list_lock); 1833 1834 if (conn->security_cfm_cb) 1835 conn->security_cfm_cb(conn, status); 1836 } 1837 1838 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status) 1839 { 1840 struct hci_cb *cb; 1841 __u8 encrypt; 1842 1843 if (conn->state == BT_CONFIG) { 1844 if (!status) 1845 conn->state = BT_CONNECTED; 1846 1847 hci_connect_cfm(conn, status); 1848 hci_conn_drop(conn); 1849 return; 1850 } 1851 1852 if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags)) 1853 encrypt = 0x00; 1854 else if (test_bit(HCI_CONN_AES_CCM, &conn->flags)) 1855 encrypt = 0x02; 1856 else 1857 encrypt = 0x01; 1858 1859 if (!status) { 1860 if (conn->sec_level == BT_SECURITY_SDP) 1861 conn->sec_level = BT_SECURITY_LOW; 1862 1863 if (conn->pending_sec_level > conn->sec_level) 1864 conn->sec_level = conn->pending_sec_level; 1865 } 1866 1867 mutex_lock(&hci_cb_list_lock); 1868 list_for_each_entry(cb, &hci_cb_list, list) { 1869 if (cb->security_cfm) 1870 cb->security_cfm(conn, status, encrypt); 1871 } 1872 mutex_unlock(&hci_cb_list_lock); 1873 1874 if (conn->security_cfm_cb) 1875 conn->security_cfm_cb(conn, status); 1876 } 1877 1878 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status) 1879 { 1880 struct hci_cb *cb; 1881 1882 mutex_lock(&hci_cb_list_lock); 1883 list_for_each_entry(cb, &hci_cb_list, list) { 1884 if (cb->key_change_cfm) 1885 cb->key_change_cfm(conn, status); 1886 } 1887 mutex_unlock(&hci_cb_list_lock); 1888 } 1889 1890 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, 1891 __u8 role) 1892 { 1893 struct hci_cb *cb; 1894 1895 mutex_lock(&hci_cb_list_lock); 1896 list_for_each_entry(cb, &hci_cb_list, list) { 1897 if (cb->role_switch_cfm) 1898 cb->role_switch_cfm(conn, status, role); 1899 } 1900 mutex_unlock(&hci_cb_list_lock); 1901 } 1902 1903 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type) 1904 { 1905 if (addr_type != ADDR_LE_DEV_RANDOM) 1906 return false; 1907 1908 if ((bdaddr->b[5] & 0xc0) == 0x40) 1909 return true; 1910 1911 return false; 1912 } 1913 1914 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type) 1915 { 1916 if (addr_type == ADDR_LE_DEV_PUBLIC) 1917 return true; 1918 1919 /* Check for Random Static address type */ 1920 if ((addr->b[5] & 0xc0) == 0xc0) 1921 return true; 1922 1923 return false; 1924 } 1925 1926 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev, 1927 bdaddr_t *bdaddr, u8 addr_type) 1928 { 1929 if (!hci_bdaddr_is_rpa(bdaddr, addr_type)) 1930 return NULL; 1931 1932 return hci_find_irk_by_rpa(hdev, bdaddr); 1933 } 1934 1935 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency, 1936 u16 to_multiplier) 1937 { 1938 u16 max_latency; 1939 1940 if (min > max || min < 6 || max > 3200) 1941 return -EINVAL; 1942 1943 if (to_multiplier < 10 || to_multiplier > 3200) 1944 return -EINVAL; 1945 1946 if (max >= to_multiplier * 8) 1947 return -EINVAL; 1948 1949 max_latency = (to_multiplier * 4 / max) - 1; 1950 if (latency > 499 || latency > max_latency) 1951 return -EINVAL; 1952 1953 return 0; 1954 } 1955 1956 int hci_register_cb(struct hci_cb *hcb); 1957 int hci_unregister_cb(struct hci_cb *hcb); 1958 1959 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen, 1960 const void *param); 1961 1962 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, 1963 const void *param); 1964 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags); 1965 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb); 1966 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb); 1967 1968 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode); 1969 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event); 1970 1971 u32 hci_conn_get_phy(struct hci_conn *conn); 1972 1973 /* ----- HCI Sockets ----- */ 1974 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb); 1975 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, 1976 int flag, struct sock *skip_sk); 1977 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb); 1978 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, 1979 void *data, u16 data_len, ktime_t tstamp, 1980 int flag, struct sock *skip_sk); 1981 1982 void hci_sock_dev_event(struct hci_dev *hdev, int event); 1983 1984 #define HCI_MGMT_VAR_LEN BIT(0) 1985 #define HCI_MGMT_NO_HDEV BIT(1) 1986 #define HCI_MGMT_UNTRUSTED BIT(2) 1987 #define HCI_MGMT_UNCONFIGURED BIT(3) 1988 #define HCI_MGMT_HDEV_OPTIONAL BIT(4) 1989 1990 struct hci_mgmt_handler { 1991 int (*func) (struct sock *sk, struct hci_dev *hdev, void *data, 1992 u16 data_len); 1993 size_t data_len; 1994 unsigned long flags; 1995 }; 1996 1997 struct hci_mgmt_chan { 1998 struct list_head list; 1999 unsigned short channel; 2000 size_t handler_count; 2001 const struct hci_mgmt_handler *handlers; 2002 void (*hdev_init) (struct sock *sk, struct hci_dev *hdev); 2003 }; 2004 2005 int hci_mgmt_chan_register(struct hci_mgmt_chan *c); 2006 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c); 2007 2008 /* Management interface */ 2009 #define DISCOV_TYPE_BREDR (BIT(BDADDR_BREDR)) 2010 #define DISCOV_TYPE_LE (BIT(BDADDR_LE_PUBLIC) | \ 2011 BIT(BDADDR_LE_RANDOM)) 2012 #define DISCOV_TYPE_INTERLEAVED (BIT(BDADDR_BREDR) | \ 2013 BIT(BDADDR_LE_PUBLIC) | \ 2014 BIT(BDADDR_LE_RANDOM)) 2015 2016 /* These LE scan and inquiry parameters were chosen according to LE General 2017 * Discovery Procedure specification. 2018 */ 2019 #define DISCOV_LE_SCAN_WIN 0x12 2020 #define DISCOV_LE_SCAN_INT 0x12 2021 #define DISCOV_LE_TIMEOUT 10240 /* msec */ 2022 #define DISCOV_INTERLEAVED_TIMEOUT 5120 /* msec */ 2023 #define DISCOV_INTERLEAVED_INQUIRY_LEN 0x04 2024 #define DISCOV_BREDR_INQUIRY_LEN 0x08 2025 #define DISCOV_LE_RESTART_DELAY msecs_to_jiffies(200) /* msec */ 2026 #define DISCOV_LE_FAST_ADV_INT_MIN 0x00A0 /* 100 msec */ 2027 #define DISCOV_LE_FAST_ADV_INT_MAX 0x00F0 /* 150 msec */ 2028 #define DISCOV_LE_PER_ADV_INT_MIN 0x00A0 /* 200 msec */ 2029 #define DISCOV_LE_PER_ADV_INT_MAX 0x00A0 /* 200 msec */ 2030 #define DISCOV_LE_ADV_MESH_MIN 0x00A0 /* 100 msec */ 2031 #define DISCOV_LE_ADV_MESH_MAX 0x00A0 /* 100 msec */ 2032 #define INTERVAL_TO_MS(x) (((x) * 10) / 0x10) 2033 2034 #define NAME_RESOLVE_DURATION msecs_to_jiffies(10240) /* 10.24 sec */ 2035 2036 void mgmt_fill_version_info(void *ver); 2037 int mgmt_new_settings(struct hci_dev *hdev); 2038 void mgmt_index_added(struct hci_dev *hdev); 2039 void mgmt_index_removed(struct hci_dev *hdev); 2040 void mgmt_set_powered_failed(struct hci_dev *hdev, int err); 2041 void mgmt_power_on(struct hci_dev *hdev, int err); 2042 void __mgmt_power_off(struct hci_dev *hdev); 2043 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key, 2044 bool persistent); 2045 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn, 2046 u8 *name, u8 name_len); 2047 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, 2048 u8 link_type, u8 addr_type, u8 reason, 2049 bool mgmt_connected); 2050 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, 2051 u8 link_type, u8 addr_type, u8 status); 2052 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2053 u8 addr_type, u8 status); 2054 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure); 2055 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2056 u8 status); 2057 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2058 u8 status); 2059 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2060 u8 link_type, u8 addr_type, u32 value, 2061 u8 confirm_hint); 2062 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2063 u8 link_type, u8 addr_type, u8 status); 2064 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2065 u8 link_type, u8 addr_type, u8 status); 2066 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr, 2067 u8 link_type, u8 addr_type); 2068 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2069 u8 link_type, u8 addr_type, u8 status); 2070 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr, 2071 u8 link_type, u8 addr_type, u8 status); 2072 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr, 2073 u8 link_type, u8 addr_type, u32 passkey, 2074 u8 entered); 2075 void mgmt_auth_failed(struct hci_conn *conn, u8 status); 2076 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status); 2077 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class, 2078 u8 status); 2079 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status); 2080 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status); 2081 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status); 2082 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2083 u8 addr_type, u8 *dev_class, s8 rssi, u32 flags, 2084 u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len, 2085 u64 instant); 2086 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type, 2087 u8 addr_type, s8 rssi, u8 *name, u8 name_len); 2088 void mgmt_discovering(struct hci_dev *hdev, u8 discovering); 2089 void mgmt_suspending(struct hci_dev *hdev, u8 state); 2090 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr, 2091 u8 addr_type); 2092 bool mgmt_powering_down(struct hci_dev *hdev); 2093 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent); 2094 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent); 2095 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk, 2096 bool persistent); 2097 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr, 2098 u8 bdaddr_type, u8 store_hint, u16 min_interval, 2099 u16 max_interval, u16 latency, u16 timeout); 2100 void mgmt_smp_complete(struct hci_conn *conn, bool complete); 2101 bool mgmt_get_connectable(struct hci_dev *hdev); 2102 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev); 2103 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev, 2104 u8 instance); 2105 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev, 2106 u8 instance); 2107 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle); 2108 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip); 2109 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle, 2110 bdaddr_t *bdaddr, u8 addr_type); 2111 2112 int hci_abort_conn(struct hci_conn *conn, u8 reason); 2113 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency, 2114 u16 to_multiplier); 2115 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand, 2116 __u8 ltk[16], __u8 key_size); 2117 2118 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr, 2119 u8 *bdaddr_type); 2120 2121 #define SCO_AIRMODE_MASK 0x0003 2122 #define SCO_AIRMODE_CVSD 0x0000 2123 #define SCO_AIRMODE_TRANSP 0x0003 2124 2125 #define LOCAL_CODEC_ACL_MASK BIT(0) 2126 #define LOCAL_CODEC_SCO_MASK BIT(1) 2127 2128 #define TRANSPORT_TYPE_MAX 0x04 2129 2130 #endif /* __HCI_CORE_H */ 2131