include/net/bluetooth/hci_core.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
   4    Copyright 2023-2024 NXP
   5
   6    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License version 2 as
  10    published by the Free Software Foundation;
  11
  12    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  13    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  14    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  15    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  16    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  17    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  18    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  19    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  20
  21    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  22    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  23    SOFTWARE IS DISCLAIMED.
  24 */
  25
  26 #ifndef __HCI_CORE_H
  27 #define __HCI_CORE_H
  28
  29 #include <linux/idr.h>
  30 #include <linux/leds.h>
  31 #include <linux/rculist.h>
  32
  33 #include <net/bluetooth/hci.h>
  34 #include <net/bluetooth/hci_sync.h>
  35 #include <net/bluetooth/hci_sock.h>
  36 #include <net/bluetooth/coredump.h>
  37
  38 /* HCI priority */
  39 #define HCI_PRIO_MAX    7
  40
  41 /* HCI maximum id value */
  42 #define HCI_MAX_ID 10000
  43
  44 /* HCI Core structures */
  45 struct inquiry_data {
  46         bdaddr_t        bdaddr;
  47         __u8            pscan_rep_mode;
  48         __u8            pscan_period_mode;
  49         __u8            pscan_mode;
  50         __u8            dev_class[3];
  51         __le16          clock_offset;
  52         __s8            rssi;
  53         __u8            ssp_mode;
  54 };
  55
  56 struct inquiry_entry {
  57         struct list_head        all;            /* inq_cache.all */
  58         struct list_head        list;           /* unknown or resolve */
  59         enum {
  60                 NAME_NOT_KNOWN,
  61                 NAME_NEEDED,
  62                 NAME_PENDING,
  63                 NAME_KNOWN,
  64         } name_state;
  65         __u32                   timestamp;
  66         struct inquiry_data     data;
  67 };
  68
  69 struct discovery_state {
  70         int                     type;
  71         enum {
  72                 DISCOVERY_STOPPED,
  73                 DISCOVERY_STARTING,
  74                 DISCOVERY_FINDING,
  75                 DISCOVERY_RESOLVING,
  76                 DISCOVERY_STOPPING,
  77         } state;
  78         struct list_head        all;    /* All devices found during inquiry */
  79         struct list_head        unknown;        /* Name state not known */
  80         struct list_head        resolve;        /* Name needs to be resolved */
  81         __u32                   timestamp;
  82         bdaddr_t                last_adv_addr;
  83         u8                      last_adv_addr_type;
  84         s8                      last_adv_rssi;
  85         u32                     last_adv_flags;
  86         u8                      last_adv_data[HCI_MAX_EXT_AD_LENGTH];
  87         u8                      last_adv_data_len;
  88         bool                    report_invalid_rssi;
  89         bool                    result_filtering;
  90         bool                    limited;
  91         s8                      rssi;
  92         u16                     uuid_count;
  93         u8                      (*uuids)[16];
  94         unsigned long           scan_start;
  95         unsigned long           scan_duration;
  96         unsigned long           name_resolve_timeout;
  97 };
  98
  99 #define SUSPEND_NOTIFIER_TIMEOUT        msecs_to_jiffies(2000) /* 2 seconds */
 100
 101 enum suspend_tasks {
 102         SUSPEND_PAUSE_DISCOVERY,
 103         SUSPEND_UNPAUSE_DISCOVERY,
 104
 105         SUSPEND_PAUSE_ADVERTISING,
 106         SUSPEND_UNPAUSE_ADVERTISING,
 107
 108         SUSPEND_SCAN_DISABLE,
 109         SUSPEND_SCAN_ENABLE,
 110         SUSPEND_DISCONNECTING,
 111
 112         SUSPEND_POWERING_DOWN,
 113
 114         SUSPEND_PREPARE_NOTIFIER,
 115
 116         SUSPEND_SET_ADV_FILTER,
 117         __SUSPEND_NUM_TASKS
 118 };
 119
 120 enum suspended_state {
 121         BT_RUNNING = 0,
 122         BT_SUSPEND_DISCONNECT,
 123         BT_SUSPEND_CONFIGURE_WAKE,
 124 };
 125
 126 struct hci_conn_hash {
 127         struct list_head list;
 128         unsigned int     acl_num;
 129         unsigned int     amp_num;
 130         unsigned int     sco_num;
 131         unsigned int     iso_num;
 132         unsigned int     le_num;
 133         unsigned int     le_num_peripheral;
 134 };
 135
 136 struct bdaddr_list {
 137         struct list_head list;
 138         bdaddr_t bdaddr;
 139         u8 bdaddr_type;
 140 };
 141
 142 struct codec_list {
 143         struct list_head list;
 144         u8      id;
 145         __u16   cid;
 146         __u16   vid;
 147         u8      transport;
 148         u8      num_caps;
 149         u32     len;
 150         struct hci_codec_caps caps[];
 151 };
 152
 153 struct bdaddr_list_with_irk {
 154         struct list_head list;
 155         bdaddr_t bdaddr;
 156         u8 bdaddr_type;
 157         u8 peer_irk[16];
 158         u8 local_irk[16];
 159 };
 160
 161 /* Bitmask of connection flags */
 162 enum hci_conn_flags {
 163         HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
 164         HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
 165 };
 166 typedef u8 hci_conn_flags_t;
 167
 168 struct bdaddr_list_with_flags {
 169         struct list_head list;
 170         bdaddr_t bdaddr;
 171         u8 bdaddr_type;
 172         hci_conn_flags_t flags;
 173 };
 174
 175 struct bt_uuid {
 176         struct list_head list;
 177         u8 uuid[16];
 178         u8 size;
 179         u8 svc_hint;
 180 };
 181
 182 struct blocked_key {
 183         struct list_head list;
 184         struct rcu_head rcu;
 185         u8 type;
 186         u8 val[16];
 187 };
 188
 189 struct smp_csrk {
 190         bdaddr_t bdaddr;
 191         u8 bdaddr_type;
 192         u8 link_type;
 193         u8 type;
 194         u8 val[16];
 195 };
 196
 197 struct smp_ltk {
 198         struct list_head list;
 199         struct rcu_head rcu;
 200         bdaddr_t bdaddr;
 201         u8 bdaddr_type;
 202         u8 link_type;
 203         u8 authenticated;
 204         u8 type;
 205         u8 enc_size;
 206         __le16 ediv;
 207         __le64 rand;
 208         u8 val[16];
 209 };
 210
 211 struct smp_irk {
 212         struct list_head list;
 213         struct rcu_head rcu;
 214         bdaddr_t rpa;
 215         bdaddr_t bdaddr;
 216         u8 addr_type;
 217         u8 link_type;
 218         u8 val[16];
 219 };
 220
 221 struct link_key {
 222         struct list_head list;
 223         struct rcu_head rcu;
 224         bdaddr_t bdaddr;
 225         u8 bdaddr_type;
 226         u8 link_type;
 227         u8 type;
 228         u8 val[HCI_LINK_KEY_SIZE];
 229         u8 pin_len;
 230 };
 231
 232 struct oob_data {
 233         struct list_head list;
 234         bdaddr_t bdaddr;
 235         u8 bdaddr_type;
 236         u8 present;
 237         u8 hash192[16];
 238         u8 rand192[16];
 239         u8 hash256[16];
 240         u8 rand256[16];
 241 };
 242
 243 struct adv_info {
 244         struct list_head list;
 245         bool    enabled;
 246         bool    pending;
 247         bool    periodic;
 248         __u8    mesh;
 249         __u8    instance;
 250         __u32   flags;
 251         __u16   timeout;
 252         __u16   remaining_time;
 253         __u16   duration;
 254         __u16   adv_data_len;
 255         __u8    adv_data[HCI_MAX_EXT_AD_LENGTH];
 256         bool    adv_data_changed;
 257         __u16   scan_rsp_len;
 258         __u8    scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
 259         bool    scan_rsp_changed;
 260         __u16   per_adv_data_len;
 261         __u8    per_adv_data[HCI_MAX_PER_AD_LENGTH];
 262         __s8    tx_power;
 263         __u32   min_interval;
 264         __u32   max_interval;
 265         bdaddr_t        random_addr;
 266         bool            rpa_expired;
 267         struct delayed_work     rpa_expired_cb;
 268 };
 269
 270 #define HCI_MAX_ADV_INSTANCES           5
 271 #define HCI_DEFAULT_ADV_DURATION        2
 272
 273 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
 274
 275 #define DATA_CMP(_d1, _l1, _d2, _l2) \
 276         (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
 277
 278 #define ADV_DATA_CMP(_adv, _data, _len) \
 279         DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
 280
 281 #define SCAN_RSP_CMP(_adv, _data, _len) \
 282         DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
 283
 284 struct monitored_device {
 285         struct list_head list;
 286
 287         bdaddr_t bdaddr;
 288         __u8     addr_type;
 289         __u16    handle;
 290         bool     notified;
 291 };
 292
 293 struct adv_pattern {
 294         struct list_head list;
 295         __u8 ad_type;
 296         __u8 offset;
 297         __u8 length;
 298         __u8 value[HCI_MAX_EXT_AD_LENGTH];
 299 };
 300
 301 struct adv_rssi_thresholds {
 302         __s8 low_threshold;
 303         __s8 high_threshold;
 304         __u16 low_threshold_timeout;
 305         __u16 high_threshold_timeout;
 306         __u8 sampling_period;
 307 };
 308
 309 struct adv_monitor {
 310         struct list_head patterns;
 311         struct adv_rssi_thresholds rssi;
 312         __u16           handle;
 313
 314         enum {
 315                 ADV_MONITOR_STATE_NOT_REGISTERED,
 316                 ADV_MONITOR_STATE_REGISTERED,
 317                 ADV_MONITOR_STATE_OFFLOADED
 318         } state;
 319 };
 320
 321 #define HCI_MIN_ADV_MONITOR_HANDLE              1
 322 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES         32
 323 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS        16
 324 #define HCI_ADV_MONITOR_EXT_NONE                1
 325 #define HCI_ADV_MONITOR_EXT_MSFT                2
 326
 327 #define HCI_MAX_SHORT_NAME_LENGTH       10
 328
 329 #define HCI_CONN_HANDLE_MAX             0x0eff
 330 #define HCI_CONN_HANDLE_UNSET(_handle)  (_handle > HCI_CONN_HANDLE_MAX)
 331
 332 /* Min encryption key size to match with SMP */
 333 #define HCI_MIN_ENC_KEY_SIZE            7
 334
 335 /* Default LE RPA expiry time, 15 minutes */
 336 #define HCI_DEFAULT_RPA_TIMEOUT         (15 * 60)
 337
 338 /* Default min/max age of connection information (1s/3s) */
 339 #define DEFAULT_CONN_INFO_MIN_AGE       1000
 340 #define DEFAULT_CONN_INFO_MAX_AGE       3000
 341 /* Default authenticated payload timeout 30s */
 342 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT   0x0bb8
 343
 344 struct amp_assoc {
 345         __u16   len;
 346         __u16   offset;
 347         __u16   rem_len;
 348         __u16   len_so_far;
 349         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
 350 };
 351
 352 #define HCI_MAX_PAGES   3
 353
 354 struct hci_dev {
 355         struct list_head list;
 356         struct mutex    lock;
 357
 358         struct ida      unset_handle_ida;
 359
 360         const char      *name;
 361         unsigned long   flags;
 362         __u16           id;
 363         __u8            bus;
 364         __u8            dev_type;
 365         bdaddr_t        bdaddr;
 366         bdaddr_t        setup_addr;
 367         bdaddr_t        public_addr;
 368         bdaddr_t        random_addr;
 369         bdaddr_t        static_addr;
 370         __u8            adv_addr_type;
 371         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 372         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 373         __u8            eir[HCI_MAX_EIR_LENGTH];
 374         __u16           appearance;
 375         __u8            dev_class[3];
 376         __u8            major_class;
 377         __u8            minor_class;
 378         __u8            max_page;
 379         __u8            features[HCI_MAX_PAGES][8];
 380         __u8            le_features[8];
 381         __u8            le_accept_list_size;
 382         __u8            le_resolv_list_size;
 383         __u8            le_num_of_adv_sets;
 384         __u8            le_states[8];
 385         __u8            mesh_ad_types[16];
 386         __u8            mesh_send_ref;
 387         __u8            commands[64];
 388         __u8            hci_ver;
 389         __u16           hci_rev;
 390         __u8            lmp_ver;
 391         __u16           manufacturer;
 392         __u16           lmp_subver;
 393         __u16           voice_setting;
 394         __u8            num_iac;
 395         __u16           stored_max_keys;
 396         __u16           stored_num_keys;
 397         __u8            io_capability;
 398         __s8            inq_tx_power;
 399         __u8            err_data_reporting;
 400         __u16           page_scan_interval;
 401         __u16           page_scan_window;
 402         __u8            page_scan_type;
 403         __u8            le_adv_channel_map;
 404         __u16           le_adv_min_interval;
 405         __u16           le_adv_max_interval;
 406         __u8            le_scan_type;
 407         __u16           le_scan_interval;
 408         __u16           le_scan_window;
 409         __u16           le_scan_int_suspend;
 410         __u16           le_scan_window_suspend;
 411         __u16           le_scan_int_discovery;
 412         __u16           le_scan_window_discovery;
 413         __u16           le_scan_int_adv_monitor;
 414         __u16           le_scan_window_adv_monitor;
 415         __u16           le_scan_int_connect;
 416         __u16           le_scan_window_connect;
 417         __u16           le_conn_min_interval;
 418         __u16           le_conn_max_interval;
 419         __u16           le_conn_latency;
 420         __u16           le_supv_timeout;
 421         __u16           le_def_tx_len;
 422         __u16           le_def_tx_time;
 423         __u16           le_max_tx_len;
 424         __u16           le_max_tx_time;
 425         __u16           le_max_rx_len;
 426         __u16           le_max_rx_time;
 427         __u8            le_max_key_size;
 428         __u8            le_min_key_size;
 429         __u16           discov_interleaved_timeout;
 430         __u16           conn_info_min_age;
 431         __u16           conn_info_max_age;
 432         __u16           auth_payload_timeout;
 433         __u8            min_enc_key_size;
 434         __u8            max_enc_key_size;
 435         __u8            pairing_opts;
 436         __u8            ssp_debug_mode;
 437         __u8            hw_error_code;
 438         __u32           clock;
 439         __u16           advmon_allowlist_duration;
 440         __u16           advmon_no_filter_duration;
 441         __u8            enable_advmon_interleave_scan;
 442
 443         __u16           devid_source;
 444         __u16           devid_vendor;
 445         __u16           devid_product;
 446         __u16           devid_version;
 447
 448         __u8            def_page_scan_type;
 449         __u16           def_page_scan_int;
 450         __u16           def_page_scan_window;
 451         __u8            def_inq_scan_type;
 452         __u16           def_inq_scan_int;
 453         __u16           def_inq_scan_window;
 454         __u16           def_br_lsto;
 455         __u16           def_page_timeout;
 456         __u16           def_multi_adv_rotation_duration;
 457         __u16           def_le_autoconnect_timeout;
 458         __s8            min_le_tx_power;
 459         __s8            max_le_tx_power;
 460
 461         __u16           pkt_type;
 462         __u16           esco_type;
 463         __u16           link_policy;
 464         __u16           link_mode;
 465
 466         __u32           idle_timeout;
 467         __u16           sniff_min_interval;
 468         __u16           sniff_max_interval;
 469
 470         __u8            amp_status;
 471         __u32           amp_total_bw;
 472         __u32           amp_max_bw;
 473         __u32           amp_min_latency;
 474         __u32           amp_max_pdu;
 475         __u8            amp_type;
 476         __u16           amp_pal_cap;
 477         __u16           amp_assoc_size;
 478         __u32           amp_max_flush_to;
 479         __u32           amp_be_flush_to;
 480
 481         struct amp_assoc        loc_assoc;
 482
 483         __u8            flow_ctl_mode;
 484
 485         unsigned int    auto_accept_delay;
 486
 487         unsigned long   quirks;
 488
 489         atomic_t        cmd_cnt;
 490         unsigned int    acl_cnt;
 491         unsigned int    sco_cnt;
 492         unsigned int    le_cnt;
 493         unsigned int    iso_cnt;
 494
 495         unsigned int    acl_mtu;
 496         unsigned int    sco_mtu;
 497         unsigned int    le_mtu;
 498         unsigned int    iso_mtu;
 499         unsigned int    acl_pkts;
 500         unsigned int    sco_pkts;
 501         unsigned int    le_pkts;
 502         unsigned int    iso_pkts;
 503
 504         __u16           block_len;
 505         __u16           block_mtu;
 506         __u16           num_blocks;
 507         __u16           block_cnt;
 508
 509         unsigned long   acl_last_tx;
 510         unsigned long   sco_last_tx;
 511         unsigned long   le_last_tx;
 512
 513         __u8            le_tx_def_phys;
 514         __u8            le_rx_def_phys;
 515
 516         struct workqueue_struct *workqueue;
 517         struct workqueue_struct *req_workqueue;
 518
 519         struct work_struct      power_on;
 520         struct delayed_work     power_off;
 521         struct work_struct      error_reset;
 522         struct work_struct      cmd_sync_work;
 523         struct list_head        cmd_sync_work_list;
 524         struct mutex            cmd_sync_work_lock;
 525         struct mutex            unregister_lock;
 526         struct work_struct      cmd_sync_cancel_work;
 527         struct work_struct      reenable_adv_work;
 528
 529         __u16                   discov_timeout;
 530         struct delayed_work     discov_off;
 531
 532         struct delayed_work     service_cache;
 533
 534         struct delayed_work     cmd_timer;
 535         struct delayed_work     ncmd_timer;
 536
 537         struct work_struct      rx_work;
 538         struct work_struct      cmd_work;
 539         struct work_struct      tx_work;
 540
 541         struct delayed_work     le_scan_disable;
 542
 543         struct sk_buff_head     rx_q;
 544         struct sk_buff_head     raw_q;
 545         struct sk_buff_head     cmd_q;
 546
 547         struct sk_buff          *sent_cmd;
 548         struct sk_buff          *recv_event;
 549
 550         struct mutex            req_lock;
 551         wait_queue_head_t       req_wait_q;
 552         __u32                   req_status;
 553         __u32                   req_result;
 554         struct sk_buff          *req_skb;
 555         struct sk_buff          *req_rsp;
 556
 557         void                    *smp_data;
 558         void                    *smp_bredr_data;
 559
 560         struct discovery_state  discovery;
 561
 562         int                     discovery_old_state;
 563         bool                    discovery_paused;
 564         int                     advertising_old_state;
 565         bool                    advertising_paused;
 566
 567         struct notifier_block   suspend_notifier;
 568         enum suspended_state    suspend_state_next;
 569         enum suspended_state    suspend_state;
 570         bool                    scanning_paused;
 571         bool                    suspended;
 572         u8                      wake_reason;
 573         bdaddr_t                wake_addr;
 574         u8                      wake_addr_type;
 575
 576         struct hci_conn_hash    conn_hash;
 577
 578         struct list_head        mesh_pending;
 579         struct list_head        mgmt_pending;
 580         struct list_head        reject_list;
 581         struct list_head        accept_list;
 582         struct list_head        uuids;
 583         struct list_head        link_keys;
 584         struct list_head        long_term_keys;
 585         struct list_head        identity_resolving_keys;
 586         struct list_head        remote_oob_data;
 587         struct list_head        le_accept_list;
 588         struct list_head        le_resolv_list;
 589         struct list_head        le_conn_params;
 590         struct list_head        pend_le_conns;
 591         struct list_head        pend_le_reports;
 592         struct list_head        blocked_keys;
 593         struct list_head        local_codecs;
 594
 595         struct hci_dev_stats    stat;
 596
 597         atomic_t                promisc;
 598
 599         const char              *hw_info;
 600         const char              *fw_info;
 601         struct dentry           *debugfs;
 602
 603         struct hci_devcoredump  dump;
 604
 605         struct device           dev;
 606
 607         struct rfkill           *rfkill;
 608
 609         DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
 610         hci_conn_flags_t        conn_flags;
 611
 612         __s8                    adv_tx_power;
 613         __u8                    adv_data[HCI_MAX_EXT_AD_LENGTH];
 614         __u8                    adv_data_len;
 615         __u8                    scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
 616         __u8                    scan_rsp_data_len;
 617         __u8                    per_adv_data[HCI_MAX_PER_AD_LENGTH];
 618         __u8                    per_adv_data_len;
 619
 620         struct list_head        adv_instances;
 621         unsigned int            adv_instance_cnt;
 622         __u8                    cur_adv_instance;
 623         __u16                   adv_instance_timeout;
 624         struct delayed_work     adv_instance_expire;
 625
 626         struct idr              adv_monitors_idr;
 627         unsigned int            adv_monitors_cnt;
 628
 629         __u8                    irk[16];
 630         __u32                   rpa_timeout;
 631         struct delayed_work     rpa_expired;
 632         bdaddr_t                rpa;
 633
 634         struct delayed_work     mesh_send_done;
 635
 636         enum {
 637                 INTERLEAVE_SCAN_NONE,
 638                 INTERLEAVE_SCAN_NO_FILTER,
 639                 INTERLEAVE_SCAN_ALLOWLIST
 640         } interleave_scan_state;
 641
 642         struct delayed_work     interleave_scan;
 643
 644         struct list_head        monitored_devices;
 645         bool                    advmon_pend_notify;
 646
 647 #if IS_ENABLED(CONFIG_BT_LEDS)
 648         struct led_trigger      *power_led;
 649 #endif
 650
 651 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
 652         __u16                   msft_opcode;
 653         void                    *msft_data;
 654         bool                    msft_curve_validity;
 655 #endif
 656
 657 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
 658         bool                    aosp_capable;
 659         bool                    aosp_quality_report;
 660 #endif
 661
 662         int (*open)(struct hci_dev *hdev);
 663         int (*close)(struct hci_dev *hdev);
 664         int (*flush)(struct hci_dev *hdev);
 665         int (*setup)(struct hci_dev *hdev);
 666         int (*shutdown)(struct hci_dev *hdev);
 667         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 668         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 669         void (*hw_error)(struct hci_dev *hdev, u8 code);
 670         int (*post_init)(struct hci_dev *hdev);
 671         int (*set_diag)(struct hci_dev *hdev, bool enable);
 672         int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 673         void (*cmd_timeout)(struct hci_dev *hdev);
 674         void (*reset)(struct hci_dev *hdev);
 675         bool (*wakeup)(struct hci_dev *hdev);
 676         int (*set_quality_report)(struct hci_dev *hdev, bool enable);
 677         int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
 678         int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
 679                                      struct bt_codec *codec, __u8 *vnd_len,
 680                                      __u8 **vnd_data);
 681 };
 682
 683 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 684
 685 enum conn_reasons {
 686         CONN_REASON_PAIR_DEVICE,
 687         CONN_REASON_L2CAP_CHAN,
 688         CONN_REASON_SCO_CONNECT,
 689         CONN_REASON_ISO_CONNECT,
 690 };
 691
 692 struct hci_conn {
 693         struct list_head list;
 694
 695         atomic_t        refcnt;
 696
 697         bdaddr_t        dst;
 698         __u8            dst_type;
 699         bdaddr_t        src;
 700         __u8            src_type;
 701         bdaddr_t        init_addr;
 702         __u8            init_addr_type;
 703         bdaddr_t        resp_addr;
 704         __u8            resp_addr_type;
 705         __u8            adv_instance;
 706         __u16           handle;
 707         __u16           sync_handle;
 708         __u16           state;
 709         __u8            mode;
 710         __u8            type;
 711         __u8            role;
 712         bool            out;
 713         __u8            attempt;
 714         __u8            dev_class[3];
 715         __u8            features[HCI_MAX_PAGES][8];
 716         __u16           pkt_type;
 717         __u16           link_policy;
 718         __u8            key_type;
 719         __u8            auth_type;
 720         __u8            sec_level;
 721         __u8            pending_sec_level;
 722         __u8            pin_length;
 723         __u8            enc_key_size;
 724         __u8            io_capability;
 725         __u32           passkey_notify;
 726         __u8            passkey_entered;
 727         __u16           disc_timeout;
 728         __u16           conn_timeout;
 729         __u16           setting;
 730         __u16           auth_payload_timeout;
 731         __u16           le_conn_min_interval;
 732         __u16           le_conn_max_interval;
 733         __u16           le_conn_interval;
 734         __u16           le_conn_latency;
 735         __u16           le_supv_timeout;
 736         __u8            le_adv_data[HCI_MAX_EXT_AD_LENGTH];
 737         __u8            le_adv_data_len;
 738         __u8            le_per_adv_data[HCI_MAX_PER_AD_TOT_LEN];
 739         __u16           le_per_adv_data_len;
 740         __u16           le_per_adv_data_offset;
 741         __u8            le_tx_phy;
 742         __u8            le_rx_phy;
 743         __s8            rssi;
 744         __s8            tx_power;
 745         __s8            max_tx_power;
 746         struct bt_iso_qos iso_qos;
 747         unsigned long   flags;
 748
 749         enum conn_reasons conn_reason;
 750         __u8            abort_reason;
 751
 752         __u32           clock;
 753         __u16           clock_accuracy;
 754
 755         unsigned long   conn_info_timestamp;
 756
 757         __u8            remote_cap;
 758         __u8            remote_auth;
 759         __u8            remote_id;
 760
 761         unsigned int    sent;
 762
 763         struct sk_buff_head data_q;
 764         struct list_head chan_list;
 765
 766         struct delayed_work disc_work;
 767         struct delayed_work auto_accept_work;
 768         struct delayed_work idle_work;
 769         struct delayed_work le_conn_timeout;
 770
 771         struct device   dev;
 772         struct dentry   *debugfs;
 773
 774         struct hci_dev  *hdev;
 775         void            *l2cap_data;
 776         void            *sco_data;
 777         void            *iso_data;
 778         struct amp_mgr  *amp_mgr;
 779
 780         struct list_head link_list;
 781         struct hci_conn *parent;
 782         struct hci_link *link;
 783
 784         struct bt_codec codec;
 785
 786         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 787         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 788         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 789
 790         void (*cleanup)(struct hci_conn *conn);
 791 };
 792
 793 struct hci_link {
 794         struct list_head list;
 795         struct hci_conn *conn;
 796 };
 797
 798 struct hci_chan {
 799         struct list_head list;
 800         __u16 handle;
 801         struct hci_conn *conn;
 802         struct sk_buff_head data_q;
 803         unsigned int    sent;
 804         __u8            state;
 805         bool            amp;
 806 };
 807
 808 struct hci_conn_params {
 809         struct list_head list;
 810         struct list_head action;
 811
 812         bdaddr_t addr;
 813         u8 addr_type;
 814
 815         u16 conn_min_interval;
 816         u16 conn_max_interval;
 817         u16 conn_latency;
 818         u16 supervision_timeout;
 819
 820         enum {
 821                 HCI_AUTO_CONN_DISABLED,
 822                 HCI_AUTO_CONN_REPORT,
 823                 HCI_AUTO_CONN_DIRECT,
 824                 HCI_AUTO_CONN_ALWAYS,
 825                 HCI_AUTO_CONN_LINK_LOSS,
 826                 HCI_AUTO_CONN_EXPLICIT,
 827         } auto_connect;
 828
 829         struct hci_conn *conn;
 830         bool explicit_connect;
 831         /* Accessed without hdev->lock: */
 832         hci_conn_flags_t flags;
 833         u8  privacy_mode;
 834 };
 835
 836 extern struct list_head hci_dev_list;
 837 extern struct list_head hci_cb_list;
 838 extern rwlock_t hci_dev_list_lock;
 839 extern struct mutex hci_cb_list_lock;
 840
 841 #define hci_dev_set_flag(hdev, nr)             set_bit((nr), (hdev)->dev_flags)
 842 #define hci_dev_clear_flag(hdev, nr)           clear_bit((nr), (hdev)->dev_flags)
 843 #define hci_dev_change_flag(hdev, nr)          change_bit((nr), (hdev)->dev_flags)
 844 #define hci_dev_test_flag(hdev, nr)            test_bit((nr), (hdev)->dev_flags)
 845 #define hci_dev_test_and_set_flag(hdev, nr)    test_and_set_bit((nr), (hdev)->dev_flags)
 846 #define hci_dev_test_and_clear_flag(hdev, nr)  test_and_clear_bit((nr), (hdev)->dev_flags)
 847 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
 848
 849 #define hci_dev_clear_volatile_flags(hdev)                      \
 850         do {                                                    \
 851                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);          \
 852                 hci_dev_clear_flag(hdev, HCI_LE_ADV);           \
 853                 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
 854                 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);     \
 855                 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT);   \
 856         } while (0)
 857
 858 #define hci_dev_le_state_simultaneous(hdev) \
 859         (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
 860          (hdev->le_states[4] & 0x08) && /* Central */ \
 861          (hdev->le_states[4] & 0x40) && /* Peripheral */ \
 862          (hdev->le_states[3] & 0x10))   /* Simultaneous */
 863
 864 /* ----- HCI interface to upper protocols ----- */
 865 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 866 int l2cap_disconn_ind(struct hci_conn *hcon);
 867 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 868
 869 #if IS_ENABLED(CONFIG_BT_BREDR)
 870 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 871 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 872 #else
 873 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 874                                   __u8 *flags)
 875 {
 876         return 0;
 877 }
 878
 879 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
 880 {
 881 }
 882 #endif
 883
 884 #if IS_ENABLED(CONFIG_BT_LE)
 885 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 886 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 887 #else
 888 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 889                                   __u8 *flags)
 890 {
 891         return 0;
 892 }
 893 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
 894                             u16 flags)
 895 {
 896 }
 897 #endif
 898
 899 /* ----- Inquiry cache ----- */
 900 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 901 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 902
 903 static inline void discovery_init(struct hci_dev *hdev)
 904 {
 905         hdev->discovery.state = DISCOVERY_STOPPED;
 906         INIT_LIST_HEAD(&hdev->discovery.all);
 907         INIT_LIST_HEAD(&hdev->discovery.unknown);
 908         INIT_LIST_HEAD(&hdev->discovery.resolve);
 909         hdev->discovery.report_invalid_rssi = true;
 910         hdev->discovery.rssi = HCI_RSSI_INVALID;
 911 }
 912
 913 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 914 {
 915         hdev->discovery.result_filtering = false;
 916         hdev->discovery.report_invalid_rssi = true;
 917         hdev->discovery.rssi = HCI_RSSI_INVALID;
 918         hdev->discovery.uuid_count = 0;
 919         kfree(hdev->discovery.uuids);
 920         hdev->discovery.uuids = NULL;
 921         hdev->discovery.scan_start = 0;
 922         hdev->discovery.scan_duration = 0;
 923 }
 924
 925 bool hci_discovery_active(struct hci_dev *hdev);
 926
 927 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 928
 929 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 930 {
 931         return list_empty(&hdev->discovery.all);
 932 }
 933
 934 static inline long inquiry_cache_age(struct hci_dev *hdev)
 935 {
 936         struct discovery_state *c = &hdev->discovery;
 937         return jiffies - c->timestamp;
 938 }
 939
 940 static inline long inquiry_entry_age(struct inquiry_entry *e)
 941 {
 942         return jiffies - e->timestamp;
 943 }
 944
 945 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 946                                                bdaddr_t *bdaddr);
 947 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 948                                                        bdaddr_t *bdaddr);
 949 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 950                                                        bdaddr_t *bdaddr,
 951                                                        int state);
 952 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 953                                       struct inquiry_entry *ie);
 954 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 955                              bool name_known);
 956 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 957
 958 /* ----- HCI Connections ----- */
 959 enum {
 960         HCI_CONN_AUTH_PEND,
 961         HCI_CONN_ENCRYPT_PEND,
 962         HCI_CONN_RSWITCH_PEND,
 963         HCI_CONN_MODE_CHANGE_PEND,
 964         HCI_CONN_SCO_SETUP_PEND,
 965         HCI_CONN_MGMT_CONNECTED,
 966         HCI_CONN_SSP_ENABLED,
 967         HCI_CONN_SC_ENABLED,
 968         HCI_CONN_AES_CCM,
 969         HCI_CONN_POWER_SAVE,
 970         HCI_CONN_FLUSH_KEY,
 971         HCI_CONN_ENCRYPT,
 972         HCI_CONN_AUTH,
 973         HCI_CONN_SECURE,
 974         HCI_CONN_FIPS,
 975         HCI_CONN_STK_ENCRYPT,
 976         HCI_CONN_AUTH_INITIATOR,
 977         HCI_CONN_DROP,
 978         HCI_CONN_CANCEL,
 979         HCI_CONN_PARAM_REMOVAL_PEND,
 980         HCI_CONN_NEW_LINK_KEY,
 981         HCI_CONN_SCANNING,
 982         HCI_CONN_AUTH_FAILURE,
 983         HCI_CONN_PER_ADV,
 984         HCI_CONN_BIG_CREATED,
 985         HCI_CONN_CREATE_CIS,
 986         HCI_CONN_BIG_SYNC,
 987         HCI_CONN_BIG_SYNC_FAILED,
 988         HCI_CONN_PA_SYNC,
 989         HCI_CONN_PA_SYNC_FAILED,
 990 };
 991
 992 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 993 {
 994         struct hci_dev *hdev = conn->hdev;
 995         return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
 996                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 997 }
 998
 999 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
1000 {
1001         struct hci_dev *hdev = conn->hdev;
1002         return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
1003                test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
1004 }
1005
1006 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
1007 {
1008         struct hci_conn_hash *h = &hdev->conn_hash;
1009         list_add_tail_rcu(&c->list, &h->list);
1010         switch (c->type) {
1011         case ACL_LINK:
1012                 h->acl_num++;
1013                 break;
1014         case AMP_LINK:
1015                 h->amp_num++;
1016                 break;
1017         case LE_LINK:
1018                 h->le_num++;
1019                 if (c->role == HCI_ROLE_SLAVE)
1020                         h->le_num_peripheral++;
1021                 break;
1022         case SCO_LINK:
1023         case ESCO_LINK:
1024                 h->sco_num++;
1025                 break;
1026         case ISO_LINK:
1027                 h->iso_num++;
1028                 break;
1029         }
1030 }
1031
1032 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1033 {
1034         struct hci_conn_hash *h = &hdev->conn_hash;
1035
1036         list_del_rcu(&c->list);
1037         synchronize_rcu();
1038
1039         switch (c->type) {
1040         case ACL_LINK:
1041                 h->acl_num--;
1042                 break;
1043         case AMP_LINK:
1044                 h->amp_num--;
1045                 break;
1046         case LE_LINK:
1047                 h->le_num--;
1048                 if (c->role == HCI_ROLE_SLAVE)
1049                         h->le_num_peripheral--;
1050                 break;
1051         case SCO_LINK:
1052         case ESCO_LINK:
1053                 h->sco_num--;
1054                 break;
1055         case ISO_LINK:
1056                 h->iso_num--;
1057                 break;
1058         }
1059 }
1060
1061 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1062 {
1063         struct hci_conn_hash *h = &hdev->conn_hash;
1064         switch (type) {
1065         case ACL_LINK:
1066                 return h->acl_num;
1067         case AMP_LINK:
1068                 return h->amp_num;
1069         case LE_LINK:
1070                 return h->le_num;
1071         case SCO_LINK:
1072         case ESCO_LINK:
1073                 return h->sco_num;
1074         case ISO_LINK:
1075                 return h->iso_num;
1076         default:
1077                 return 0;
1078         }
1079 }
1080
1081 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1082 {
1083         struct hci_conn_hash *c = &hdev->conn_hash;
1084
1085         return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
1086 }
1087
1088 static inline bool hci_conn_valid(struct hci_dev *hdev, struct hci_conn *conn)
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 (c == conn) {
1097                         rcu_read_unlock();
1098                         return true;
1099                 }
1100         }
1101         rcu_read_unlock();
1102
1103         return false;
1104 }
1105
1106 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1107 {
1108         struct hci_conn_hash *h = &hdev->conn_hash;
1109         struct hci_conn *c;
1110         __u8 type = INVALID_LINK;
1111
1112         rcu_read_lock();
1113
1114         list_for_each_entry_rcu(c, &h->list, list) {
1115                 if (c->handle == handle) {
1116                         type = c->type;
1117                         break;
1118                 }
1119         }
1120
1121         rcu_read_unlock();
1122
1123         return type;
1124 }
1125
1126 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1127                                                         bdaddr_t *ba, __u8 bis)
1128 {
1129         struct hci_conn_hash *h = &hdev->conn_hash;
1130         struct hci_conn  *c;
1131
1132         rcu_read_lock();
1133
1134         list_for_each_entry_rcu(c, &h->list, list) {
1135                 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1136                         continue;
1137
1138                 if (c->iso_qos.bcast.bis == bis) {
1139                         rcu_read_unlock();
1140                         return c;
1141                 }
1142         }
1143         rcu_read_unlock();
1144
1145         return NULL;
1146 }
1147
1148 static inline struct hci_conn *
1149 hci_conn_hash_lookup_per_adv_bis(struct hci_dev *hdev,
1150                                  bdaddr_t *ba,
1151                                  __u8 big, __u8 bis)
1152 {
1153         struct hci_conn_hash *h = &hdev->conn_hash;
1154         struct hci_conn  *c;
1155
1156         rcu_read_lock();
1157
1158         list_for_each_entry_rcu(c, &h->list, list) {
1159                 if (bacmp(&c->dst, ba) || c->type != ISO_LINK ||
1160                         !test_bit(HCI_CONN_PER_ADV, &c->flags))
1161                         continue;
1162
1163                 if (c->iso_qos.bcast.big == big &&
1164                     c->iso_qos.bcast.bis == bis) {
1165                         rcu_read_unlock();
1166                         return c;
1167                 }
1168         }
1169         rcu_read_unlock();
1170
1171         return NULL;
1172 }
1173
1174 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1175                                                                 __u16 handle)
1176 {
1177         struct hci_conn_hash *h = &hdev->conn_hash;
1178         struct hci_conn  *c;
1179
1180         rcu_read_lock();
1181
1182         list_for_each_entry_rcu(c, &h->list, list) {
1183                 if (c->handle == handle) {
1184                         rcu_read_unlock();
1185                         return c;
1186                 }
1187         }
1188         rcu_read_unlock();
1189
1190         return NULL;
1191 }
1192
1193 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1194                                                         __u8 type, bdaddr_t *ba)
1195 {
1196         struct hci_conn_hash *h = &hdev->conn_hash;
1197         struct hci_conn  *c;
1198
1199         rcu_read_lock();
1200
1201         list_for_each_entry_rcu(c, &h->list, list) {
1202                 if (c->type == type && !bacmp(&c->dst, ba)) {
1203                         rcu_read_unlock();
1204                         return c;
1205                 }
1206         }
1207
1208         rcu_read_unlock();
1209
1210         return NULL;
1211 }
1212
1213 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1214                                                        bdaddr_t *ba,
1215                                                        __u8 ba_type)
1216 {
1217         struct hci_conn_hash *h = &hdev->conn_hash;
1218         struct hci_conn  *c;
1219
1220         rcu_read_lock();
1221
1222         list_for_each_entry_rcu(c, &h->list, list) {
1223                 if (c->type != LE_LINK)
1224                        continue;
1225
1226                 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1227                         rcu_read_unlock();
1228                         return c;
1229                 }
1230         }
1231
1232         rcu_read_unlock();
1233
1234         return NULL;
1235 }
1236
1237 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1238                                                         bdaddr_t *ba,
1239                                                         __u8 ba_type,
1240                                                         __u8 cig,
1241                                                         __u8 id)
1242 {
1243         struct hci_conn_hash *h = &hdev->conn_hash;
1244         struct hci_conn  *c;
1245
1246         rcu_read_lock();
1247
1248         list_for_each_entry_rcu(c, &h->list, list) {
1249                 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1250                         continue;
1251
1252                 /* Match CIG ID if set */
1253                 if (cig != c->iso_qos.ucast.cig)
1254                         continue;
1255
1256                 /* Match CIS ID if set */
1257                 if (id != c->iso_qos.ucast.cis)
1258                         continue;
1259
1260                 /* Match destination address if set */
1261                 if (!ba || (ba_type == c->dst_type && !bacmp(&c->dst, ba))) {
1262                         rcu_read_unlock();
1263                         return c;
1264                 }
1265         }
1266
1267         rcu_read_unlock();
1268
1269         return NULL;
1270 }
1271
1272 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1273                                                         __u8 handle)
1274 {
1275         struct hci_conn_hash *h = &hdev->conn_hash;
1276         struct hci_conn  *c;
1277
1278         rcu_read_lock();
1279
1280         list_for_each_entry_rcu(c, &h->list, list) {
1281                 if (c->type != ISO_LINK || !bacmp(&c->dst, BDADDR_ANY))
1282                         continue;
1283
1284                 if (handle == c->iso_qos.ucast.cig) {
1285                         rcu_read_unlock();
1286                         return c;
1287                 }
1288         }
1289
1290         rcu_read_unlock();
1291
1292         return NULL;
1293 }
1294
1295 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1296                                                         __u8 handle)
1297 {
1298         struct hci_conn_hash *h = &hdev->conn_hash;
1299         struct hci_conn  *c;
1300
1301         rcu_read_lock();
1302
1303         list_for_each_entry_rcu(c, &h->list, list) {
1304                 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1305                         continue;
1306
1307                 if (handle == c->iso_qos.bcast.big) {
1308                         rcu_read_unlock();
1309                         return c;
1310                 }
1311         }
1312
1313         rcu_read_unlock();
1314
1315         return NULL;
1316 }
1317
1318 static inline struct hci_conn *
1319 hci_conn_hash_lookup_big_state(struct hci_dev *hdev, __u8 handle,  __u16 state)
1320 {
1321         struct hci_conn_hash *h = &hdev->conn_hash;
1322         struct hci_conn  *c;
1323
1324         rcu_read_lock();
1325
1326         list_for_each_entry_rcu(c, &h->list, list) {
1327                 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK ||
1328                         c->state != state)
1329                         continue;
1330
1331                 if (handle == c->iso_qos.bcast.big) {
1332                         rcu_read_unlock();
1333                         return c;
1334                 }
1335         }
1336
1337         rcu_read_unlock();
1338
1339         return NULL;
1340 }
1341
1342 static inline struct hci_conn *
1343 hci_conn_hash_lookup_pa_sync_big_handle(struct hci_dev *hdev, __u8 big)
1344 {
1345         struct hci_conn_hash *h = &hdev->conn_hash;
1346         struct hci_conn  *c;
1347
1348         rcu_read_lock();
1349
1350         list_for_each_entry_rcu(c, &h->list, list) {
1351                 if (c->type != ISO_LINK ||
1352                         !test_bit(HCI_CONN_PA_SYNC, &c->flags))
1353                         continue;
1354
1355                 if (c->iso_qos.bcast.big == big) {
1356                         rcu_read_unlock();
1357                         return c;
1358                 }
1359         }
1360         rcu_read_unlock();
1361
1362         return NULL;
1363 }
1364
1365 static inline struct hci_conn *
1366 hci_conn_hash_lookup_pa_sync_handle(struct hci_dev *hdev, __u16 sync_handle)
1367 {
1368         struct hci_conn_hash *h = &hdev->conn_hash;
1369         struct hci_conn  *c;
1370
1371         rcu_read_lock();
1372
1373         list_for_each_entry_rcu(c, &h->list, list) {
1374                 if (c->type != ISO_LINK ||
1375                         !test_bit(HCI_CONN_PA_SYNC, &c->flags))
1376                         continue;
1377
1378                 if (c->sync_handle == sync_handle) {
1379                         rcu_read_unlock();
1380                         return c;
1381                 }
1382         }
1383         rcu_read_unlock();
1384
1385         return NULL;
1386 }
1387
1388 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1389                                                         __u8 type, __u16 state)
1390 {
1391         struct hci_conn_hash *h = &hdev->conn_hash;
1392         struct hci_conn  *c;
1393
1394         rcu_read_lock();
1395
1396         list_for_each_entry_rcu(c, &h->list, list) {
1397                 if (c->type == type && c->state == state) {
1398                         rcu_read_unlock();
1399                         return c;
1400                 }
1401         }
1402
1403         rcu_read_unlock();
1404
1405         return NULL;
1406 }
1407
1408 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1409 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1410                                             hci_conn_func_t func, __u8 type,
1411                                             __u16 state, void *data)
1412 {
1413         struct hci_conn_hash *h = &hdev->conn_hash;
1414         struct hci_conn  *c;
1415
1416         if (!func)
1417                 return;
1418
1419         rcu_read_lock();
1420
1421         list_for_each_entry_rcu(c, &h->list, list) {
1422                 if (c->type == type && c->state == state)
1423                         func(c, data);
1424         }
1425
1426         rcu_read_unlock();
1427 }
1428
1429 static inline void hci_conn_hash_list_flag(struct hci_dev *hdev,
1430                                             hci_conn_func_t func, __u8 type,
1431                                             __u8 flag, void *data)
1432 {
1433         struct hci_conn_hash *h = &hdev->conn_hash;
1434         struct hci_conn  *c;
1435
1436         if (!func)
1437                 return;
1438
1439         rcu_read_lock();
1440
1441         list_for_each_entry_rcu(c, &h->list, list) {
1442                 if (c->type == type && test_bit(flag, &c->flags))
1443                         func(c, data);
1444         }
1445
1446         rcu_read_unlock();
1447 }
1448
1449 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1450 {
1451         struct hci_conn_hash *h = &hdev->conn_hash;
1452         struct hci_conn  *c;
1453
1454         rcu_read_lock();
1455
1456         list_for_each_entry_rcu(c, &h->list, list) {
1457                 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1458                     !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1459                         rcu_read_unlock();
1460                         return c;
1461                 }
1462         }
1463
1464         rcu_read_unlock();
1465
1466         return NULL;
1467 }
1468
1469 /* Returns true if an le connection is in the scanning state */
1470 static inline bool hci_is_le_conn_scanning(struct hci_dev *hdev)
1471 {
1472         struct hci_conn_hash *h = &hdev->conn_hash;
1473         struct hci_conn  *c;
1474
1475         rcu_read_lock();
1476
1477         list_for_each_entry_rcu(c, &h->list, list) {
1478                 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1479                     test_bit(HCI_CONN_SCANNING, &c->flags)) {
1480                         rcu_read_unlock();
1481                         return true;
1482                 }
1483         }
1484
1485         rcu_read_unlock();
1486
1487         return false;
1488 }
1489
1490 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1491 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1492 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1493 bool hci_iso_setup_path(struct hci_conn *conn);
1494 int hci_le_create_cis_pending(struct hci_dev *hdev);
1495 int hci_conn_check_create_cis(struct hci_conn *conn);
1496
1497 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1498                               u8 role, u16 handle);
1499 struct hci_conn *hci_conn_add_unset(struct hci_dev *hdev, int type,
1500                                     bdaddr_t *dst, u8 role);
1501 void hci_conn_del(struct hci_conn *conn);
1502 void hci_conn_hash_flush(struct hci_dev *hdev);
1503
1504 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1505 void hci_chan_del(struct hci_chan *chan);
1506 void hci_chan_list_flush(struct hci_conn *conn);
1507 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1508
1509 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1510                                      u8 dst_type, u8 sec_level,
1511                                      u16 conn_timeout,
1512                                      enum conn_reasons conn_reason);
1513 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1514                                 u8 dst_type, bool dst_resolved, u8 sec_level,
1515                                 u16 conn_timeout, u8 role);
1516 void hci_connect_le_scan_cleanup(struct hci_conn *conn, u8 status);
1517 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1518                                  u8 sec_level, u8 auth_type,
1519                                  enum conn_reasons conn_reason, u16 timeout);
1520 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1521                                  __u16 setting, struct bt_codec *codec,
1522                                  u16 timeout);
1523 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1524                               __u8 dst_type, struct bt_iso_qos *qos);
1525 struct hci_conn *hci_bind_bis(struct hci_dev *hdev, bdaddr_t *dst,
1526                               struct bt_iso_qos *qos,
1527                               __u8 base_len, __u8 *base);
1528 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1529                                  __u8 dst_type, struct bt_iso_qos *qos);
1530 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1531                                  __u8 dst_type, struct bt_iso_qos *qos,
1532                                  __u8 data_len, __u8 *data);
1533 struct hci_conn *hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst,
1534                        __u8 dst_type, __u8 sid, struct bt_iso_qos *qos);
1535 int hci_le_big_create_sync(struct hci_dev *hdev, struct hci_conn *hcon,
1536                            struct bt_iso_qos *qos,
1537                            __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1538 int hci_conn_check_link_mode(struct hci_conn *conn);
1539 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1540 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1541                       bool initiator);
1542 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1543
1544 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1545
1546 void hci_conn_failed(struct hci_conn *conn, u8 status);
1547 u8 hci_conn_set_handle(struct hci_conn *conn, u16 handle);
1548
1549 /*
1550  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1551  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1552  * working or anything else. They just guarantee that the object is available
1553  * and can be dereferenced. So you can use its locks, local variables and any
1554  * other constant data.
1555  * Before accessing runtime data, you _must_ lock the object and then check that
1556  * it is still running. As soon as you release the locks, the connection might
1557  * get dropped, though.
1558  *
1559  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1560  * how long the underlying connection is held. So every channel that runs on the
1561  * hci_conn object calls this to prevent the connection from disappearing. As
1562  * long as you hold a device, you must also guarantee that you have a valid
1563  * reference to the device via hci_conn_get() (or the initial reference from
1564  * hci_conn_add()).
1565  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1566  * break because nobody cares for that. But this means, we cannot use
1567  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1568  */
1569
1570 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1571 {
1572         get_device(&conn->dev);
1573         return conn;
1574 }
1575
1576 static inline void hci_conn_put(struct hci_conn *conn)
1577 {
1578         put_device(&conn->dev);
1579 }
1580
1581 static inline struct hci_conn *hci_conn_hold(struct hci_conn *conn)
1582 {
1583         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1584
1585         atomic_inc(&conn->refcnt);
1586         cancel_delayed_work(&conn->disc_work);
1587
1588         return conn;
1589 }
1590
1591 static inline void hci_conn_drop(struct hci_conn *conn)
1592 {
1593         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1594
1595         if (atomic_dec_and_test(&conn->refcnt)) {
1596                 unsigned long timeo;
1597
1598                 switch (conn->type) {
1599                 case ACL_LINK:
1600                 case LE_LINK:
1601                         cancel_delayed_work(&conn->idle_work);
1602                         if (conn->state == BT_CONNECTED) {
1603                                 timeo = conn->disc_timeout;
1604                                 if (!conn->out)
1605                                         timeo *= 2;
1606                         } else {
1607                                 timeo = 0;
1608                         }
1609                         break;
1610
1611                 case AMP_LINK:
1612                         timeo = conn->disc_timeout;
1613                         break;
1614
1615                 default:
1616                         timeo = 0;
1617                         break;
1618                 }
1619
1620                 cancel_delayed_work(&conn->disc_work);
1621                 queue_delayed_work(conn->hdev->workqueue,
1622                                    &conn->disc_work, timeo);
1623         }
1624 }
1625
1626 /* ----- HCI Devices ----- */
1627 static inline void hci_dev_put(struct hci_dev *d)
1628 {
1629         BT_DBG("%s orig refcnt %d", d->name,
1630                kref_read(&d->dev.kobj.kref));
1631
1632         put_device(&d->dev);
1633 }
1634
1635 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1636 {
1637         BT_DBG("%s orig refcnt %d", d->name,
1638                kref_read(&d->dev.kobj.kref));
1639
1640         get_device(&d->dev);
1641         return d;
1642 }
1643
1644 #define hci_dev_lock(d)         mutex_lock(&d->lock)
1645 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
1646
1647 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1648 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1649
1650 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1651 {
1652         return dev_get_drvdata(&hdev->dev);
1653 }
1654
1655 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1656 {
1657         dev_set_drvdata(&hdev->dev, data);
1658 }
1659
1660 static inline void *hci_get_priv(struct hci_dev *hdev)
1661 {
1662         return (char *)hdev + sizeof(*hdev);
1663 }
1664
1665 struct hci_dev *hci_dev_get(int index);
1666 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1667
1668 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1669
1670 static inline struct hci_dev *hci_alloc_dev(void)
1671 {
1672         return hci_alloc_dev_priv(0);
1673 }
1674
1675 void hci_free_dev(struct hci_dev *hdev);
1676 int hci_register_dev(struct hci_dev *hdev);
1677 void hci_unregister_dev(struct hci_dev *hdev);
1678 void hci_release_dev(struct hci_dev *hdev);
1679 int hci_register_suspend_notifier(struct hci_dev *hdev);
1680 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1681 int hci_suspend_dev(struct hci_dev *hdev);
1682 int hci_resume_dev(struct hci_dev *hdev);
1683 int hci_reset_dev(struct hci_dev *hdev);
1684 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1685 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1686 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1687 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1688
1689 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1690 {
1691 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1692         hdev->msft_opcode = opcode;
1693 #endif
1694 }
1695
1696 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1697 {
1698 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1699         hdev->aosp_capable = true;
1700 #endif
1701 }
1702
1703 static inline void hci_devcd_setup(struct hci_dev *hdev)
1704 {
1705 #ifdef CONFIG_DEV_COREDUMP
1706         INIT_WORK(&hdev->dump.dump_rx, hci_devcd_rx);
1707         INIT_DELAYED_WORK(&hdev->dump.dump_timeout, hci_devcd_timeout);
1708         skb_queue_head_init(&hdev->dump.dump_q);
1709 #endif
1710 }
1711
1712 int hci_dev_open(__u16 dev);
1713 int hci_dev_close(__u16 dev);
1714 int hci_dev_do_close(struct hci_dev *hdev);
1715 int hci_dev_reset(__u16 dev);
1716 int hci_dev_reset_stat(__u16 dev);
1717 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1718 int hci_get_dev_list(void __user *arg);
1719 int hci_get_dev_info(void __user *arg);
1720 int hci_get_conn_list(void __user *arg);
1721 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1722 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1723 int hci_inquiry(void __user *arg);
1724
1725 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1726                                            bdaddr_t *bdaddr, u8 type);
1727 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1728                                     struct list_head *list, bdaddr_t *bdaddr,
1729                                     u8 type);
1730 struct bdaddr_list_with_flags *
1731 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1732                                   u8 type);
1733 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1734 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1735                                  u8 type, u8 *peer_irk, u8 *local_irk);
1736 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1737                                    u8 type, u32 flags);
1738 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1739 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1740                                  u8 type);
1741 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1742                                    u8 type);
1743 void hci_bdaddr_list_clear(struct list_head *list);
1744
1745 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1746                                                bdaddr_t *addr, u8 addr_type);
1747 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1748                                             bdaddr_t *addr, u8 addr_type);
1749 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1750 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1751 void hci_conn_params_free(struct hci_conn_params *param);
1752
1753 void hci_pend_le_list_del_init(struct hci_conn_params *param);
1754 void hci_pend_le_list_add(struct hci_conn_params *param,
1755                           struct list_head *list);
1756 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1757                                                   bdaddr_t *addr,
1758                                                   u8 addr_type);
1759
1760 void hci_uuids_clear(struct hci_dev *hdev);
1761
1762 void hci_link_keys_clear(struct hci_dev *hdev);
1763 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1764 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1765                                   bdaddr_t *bdaddr, u8 *val, u8 type,
1766                                   u8 pin_len, bool *persistent);
1767 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1768                             u8 addr_type, u8 type, u8 authenticated,
1769                             u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1770 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1771                              u8 addr_type, u8 role);
1772 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1773 void hci_smp_ltks_clear(struct hci_dev *hdev);
1774 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1775
1776 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1777 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1778                                      u8 addr_type);
1779 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1780                             u8 addr_type, u8 val[16], bdaddr_t *rpa);
1781 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1782 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1783 void hci_blocked_keys_clear(struct hci_dev *hdev);
1784 void hci_smp_irks_clear(struct hci_dev *hdev);
1785
1786 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1787
1788 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1789 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1790                                           bdaddr_t *bdaddr, u8 bdaddr_type);
1791 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1792                             u8 bdaddr_type, u8 *hash192, u8 *rand192,
1793                             u8 *hash256, u8 *rand256);
1794 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1795                                u8 bdaddr_type);
1796
1797 void hci_adv_instances_clear(struct hci_dev *hdev);
1798 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1799 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1800 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1801                                       u32 flags, u16 adv_data_len, u8 *adv_data,
1802                                       u16 scan_rsp_len, u8 *scan_rsp_data,
1803                                       u16 timeout, u16 duration, s8 tx_power,
1804                                       u32 min_interval, u32 max_interval,
1805                                       u8 mesh_handle);
1806 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1807                                       u32 flags, u8 data_len, u8 *data,
1808                                       u32 min_interval, u32 max_interval);
1809 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1810                          u16 adv_data_len, u8 *adv_data,
1811                          u16 scan_rsp_len, u8 *scan_rsp_data);
1812 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1813 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1814 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1815 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1816
1817 void hci_adv_monitors_clear(struct hci_dev *hdev);
1818 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1819 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1820 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1821 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1822 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1823 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1824
1825 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1826
1827 void hci_init_sysfs(struct hci_dev *hdev);
1828 void hci_conn_init_sysfs(struct hci_conn *conn);
1829 void hci_conn_add_sysfs(struct hci_conn *conn);
1830 void hci_conn_del_sysfs(struct hci_conn *conn);
1831
1832 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1833 #define GET_HCIDEV_DEV(hdev) ((hdev)->dev.parent)
1834
1835 /* ----- LMP capabilities ----- */
1836 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
1837 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
1838 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
1839 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
1840 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
1841 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
1842 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
1843 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
1844 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
1845 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1846 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1847 #define lmp_esco_2m_capable(dev)   ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1848 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
1849 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1850 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1851 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
1852 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1853 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1854 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1855 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1856 #define lmp_edr_2m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_2M)
1857 #define lmp_edr_3m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_3M)
1858 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1859 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1860
1861 /* ----- Extended LMP capabilities ----- */
1862 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1863 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1864 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1865 #define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1866 #define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1867 #define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1868
1869 /* ----- Host capabilities ----- */
1870 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1871 #define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1872 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1873 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1874
1875 #define hdev_is_powered(dev)   (test_bit(HCI_UP, &(dev)->flags) && \
1876                                 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1877 #define bredr_sc_enabled(dev)  (lmp_sc_capable(dev) && \
1878                                 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1879 #define rpa_valid(dev)         (bacmp(&dev->rpa, BDADDR_ANY) && \
1880                                 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1881 #define adv_rpa_valid(adv)     (bacmp(&adv->random_addr, BDADDR_ANY) && \
1882                                 !adv->rpa_expired)
1883
1884 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1885                       ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1886
1887 #define le_2m_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_2M))
1888
1889 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1890                       ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1891
1892 #define le_coded_capable(dev) (((dev)->le_features[1] & HCI_LE_PHY_CODED) && \
1893                                !test_bit(HCI_QUIRK_BROKEN_LE_CODED, \
1894                                          &(dev)->quirks))
1895
1896 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1897                          ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1898
1899 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1900
1901 /* Use LL Privacy based address resolution if supported */
1902 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1903                              hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1904
1905 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1906                                    (hdev->commands[39] & 0x04))
1907
1908 /* Use enhanced synchronous connection if command is supported and its quirk
1909  * has not been set.
1910  */
1911 #define enhanced_sync_conn_capable(dev) \
1912         (((dev)->commands[29] & 0x08) && \
1913          !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1914
1915 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1916 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1917                            ((dev)->commands[37] & 0x40) && \
1918                            !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1919
1920 /* Use ext create connection if command is supported */
1921 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1922
1923 /* Extended advertising support */
1924 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1925
1926 /* Maximum advertising length */
1927 #define max_adv_len(dev) \
1928         (ext_adv_capable(dev) ? HCI_MAX_EXT_AD_LENGTH : HCI_MAX_AD_LENGTH)
1929
1930 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1931  *
1932  * C24: Mandatory if the LE Controller supports Connection State and either
1933  * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1934  */
1935 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1936                                          ext_adv_capable(dev))
1937
1938 /* Periodic advertising support */
1939 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1940
1941 /* CIS Master/Slave and BIS support */
1942 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1943 #define cis_capable(dev) \
1944         (cis_central_capable(dev) || cis_peripheral_capable(dev))
1945 #define cis_central_capable(dev) \
1946         ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1947 #define cis_peripheral_capable(dev) \
1948         ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1949 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1950 #define sync_recv_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_SYNC_RECEIVER)
1951
1952 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1953         (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1954
1955 /* ----- HCI protocols ----- */
1956 #define HCI_PROTO_DEFER             0x01
1957
1958 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1959                                         __u8 type, __u8 *flags)
1960 {
1961         switch (type) {
1962         case ACL_LINK:
1963                 return l2cap_connect_ind(hdev, bdaddr);
1964
1965         case SCO_LINK:
1966         case ESCO_LINK:
1967                 return sco_connect_ind(hdev, bdaddr, flags);
1968
1969         case ISO_LINK:
1970                 return iso_connect_ind(hdev, bdaddr, flags);
1971
1972         default:
1973                 BT_ERR("unknown link type %d", type);
1974                 return -EINVAL;
1975         }
1976 }
1977
1978 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1979 {
1980         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1981                 return HCI_ERROR_REMOTE_USER_TERM;
1982
1983         return l2cap_disconn_ind(conn);
1984 }
1985
1986 /* ----- HCI callbacks ----- */
1987 struct hci_cb {
1988         struct list_head list;
1989
1990         char *name;
1991
1992         void (*connect_cfm)     (struct hci_conn *conn, __u8 status);
1993         void (*disconn_cfm)     (struct hci_conn *conn, __u8 status);
1994         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
1995                                                                 __u8 encrypt);
1996         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
1997         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1998 };
1999
2000 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
2001 {
2002         struct hci_cb *cb;
2003
2004         mutex_lock(&hci_cb_list_lock);
2005         list_for_each_entry(cb, &hci_cb_list, list) {
2006                 if (cb->connect_cfm)
2007                         cb->connect_cfm(conn, status);
2008         }
2009         mutex_unlock(&hci_cb_list_lock);
2010
2011         if (conn->connect_cfm_cb)
2012                 conn->connect_cfm_cb(conn, status);
2013 }
2014
2015 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
2016 {
2017         struct hci_cb *cb;
2018
2019         mutex_lock(&hci_cb_list_lock);
2020         list_for_each_entry(cb, &hci_cb_list, list) {
2021                 if (cb->disconn_cfm)
2022                         cb->disconn_cfm(conn, reason);
2023         }
2024         mutex_unlock(&hci_cb_list_lock);
2025
2026         if (conn->disconn_cfm_cb)
2027                 conn->disconn_cfm_cb(conn, reason);
2028 }
2029
2030 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
2031 {
2032         struct hci_cb *cb;
2033         __u8 encrypt;
2034
2035         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
2036                 return;
2037
2038         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
2039
2040         mutex_lock(&hci_cb_list_lock);
2041         list_for_each_entry(cb, &hci_cb_list, list) {
2042                 if (cb->security_cfm)
2043                         cb->security_cfm(conn, status, encrypt);
2044         }
2045         mutex_unlock(&hci_cb_list_lock);
2046
2047         if (conn->security_cfm_cb)
2048                 conn->security_cfm_cb(conn, status);
2049 }
2050
2051 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
2052 {
2053         struct hci_cb *cb;
2054         __u8 encrypt;
2055
2056         if (conn->state == BT_CONFIG) {
2057                 if (!status)
2058                         conn->state = BT_CONNECTED;
2059
2060                 hci_connect_cfm(conn, status);
2061                 hci_conn_drop(conn);
2062                 return;
2063         }
2064
2065         if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
2066                 encrypt = 0x00;
2067         else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
2068                 encrypt = 0x02;
2069         else
2070                 encrypt = 0x01;
2071
2072         if (!status) {
2073                 if (conn->sec_level == BT_SECURITY_SDP)
2074                         conn->sec_level = BT_SECURITY_LOW;
2075
2076                 if (conn->pending_sec_level > conn->sec_level)
2077                         conn->sec_level = conn->pending_sec_level;
2078         }
2079
2080         mutex_lock(&hci_cb_list_lock);
2081         list_for_each_entry(cb, &hci_cb_list, list) {
2082                 if (cb->security_cfm)
2083                         cb->security_cfm(conn, status, encrypt);
2084         }
2085         mutex_unlock(&hci_cb_list_lock);
2086
2087         if (conn->security_cfm_cb)
2088                 conn->security_cfm_cb(conn, status);
2089 }
2090
2091 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
2092 {
2093         struct hci_cb *cb;
2094
2095         mutex_lock(&hci_cb_list_lock);
2096         list_for_each_entry(cb, &hci_cb_list, list) {
2097                 if (cb->key_change_cfm)
2098                         cb->key_change_cfm(conn, status);
2099         }
2100         mutex_unlock(&hci_cb_list_lock);
2101 }
2102
2103 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
2104                                                                 __u8 role)
2105 {
2106         struct hci_cb *cb;
2107
2108         mutex_lock(&hci_cb_list_lock);
2109         list_for_each_entry(cb, &hci_cb_list, list) {
2110                 if (cb->role_switch_cfm)
2111                         cb->role_switch_cfm(conn, status, role);
2112         }
2113         mutex_unlock(&hci_cb_list_lock);
2114 }
2115
2116 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
2117 {
2118         if (addr_type != ADDR_LE_DEV_RANDOM)
2119                 return false;
2120
2121         if ((bdaddr->b[5] & 0xc0) == 0x40)
2122                return true;
2123
2124         return false;
2125 }
2126
2127 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
2128 {
2129         if (addr_type == ADDR_LE_DEV_PUBLIC)
2130                 return true;
2131
2132         /* Check for Random Static address type */
2133         if ((addr->b[5] & 0xc0) == 0xc0)
2134                 return true;
2135
2136         return false;
2137 }
2138
2139 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
2140                                           bdaddr_t *bdaddr, u8 addr_type)
2141 {
2142         if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
2143                 return NULL;
2144
2145         return hci_find_irk_by_rpa(hdev, bdaddr);
2146 }
2147
2148 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
2149                                         u16 to_multiplier)
2150 {
2151         u16 max_latency;
2152
2153         if (min > max || min < 6 || max > 3200)
2154                 return -EINVAL;
2155
2156         if (to_multiplier < 10 || to_multiplier > 3200)
2157                 return -EINVAL;
2158
2159         if (max >= to_multiplier * 8)
2160                 return -EINVAL;
2161
2162         max_latency = (to_multiplier * 4 / max) - 1;
2163         if (latency > 499 || latency > max_latency)
2164                 return -EINVAL;
2165
2166         return 0;
2167 }
2168
2169 int hci_register_cb(struct hci_cb *hcb);
2170 int hci_unregister_cb(struct hci_cb *hcb);
2171
2172 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2173                    const void *param);
2174
2175 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2176                  const void *param);
2177 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2178 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2179 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2180
2181 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2182 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2183
2184 u32 hci_conn_get_phy(struct hci_conn *conn);
2185
2186 /* ----- HCI Sockets ----- */
2187 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2188 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2189                          int flag, struct sock *skip_sk);
2190 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2191 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2192                                  void *data, u16 data_len, ktime_t tstamp,
2193                                  int flag, struct sock *skip_sk);
2194
2195 void hci_sock_dev_event(struct hci_dev *hdev, int event);
2196
2197 #define HCI_MGMT_VAR_LEN        BIT(0)
2198 #define HCI_MGMT_NO_HDEV        BIT(1)
2199 #define HCI_MGMT_UNTRUSTED      BIT(2)
2200 #define HCI_MGMT_UNCONFIGURED   BIT(3)
2201 #define HCI_MGMT_HDEV_OPTIONAL  BIT(4)
2202
2203 struct hci_mgmt_handler {
2204         int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2205                      u16 data_len);
2206         size_t data_len;
2207         unsigned long flags;
2208 };
2209
2210 struct hci_mgmt_chan {
2211         struct list_head list;
2212         unsigned short channel;
2213         size_t handler_count;
2214         const struct hci_mgmt_handler *handlers;
2215         void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2216 };
2217
2218 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2219 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2220
2221 /* Management interface */
2222 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
2223 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
2224                                          BIT(BDADDR_LE_RANDOM))
2225 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
2226                                          BIT(BDADDR_LE_PUBLIC) | \
2227                                          BIT(BDADDR_LE_RANDOM))
2228
2229 /* These LE scan and inquiry parameters were chosen according to LE General
2230  * Discovery Procedure specification.
2231  */
2232 #define DISCOV_LE_SCAN_WIN              0x12
2233 #define DISCOV_LE_SCAN_INT              0x12
2234 #define DISCOV_LE_TIMEOUT               10240   /* msec */
2235 #define DISCOV_INTERLEAVED_TIMEOUT      5120    /* msec */
2236 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
2237 #define DISCOV_BREDR_INQUIRY_LEN        0x08
2238 #define DISCOV_LE_RESTART_DELAY         msecs_to_jiffies(200)   /* msec */
2239 #define DISCOV_LE_FAST_ADV_INT_MIN      0x00A0  /* 100 msec */
2240 #define DISCOV_LE_FAST_ADV_INT_MAX      0x00F0  /* 150 msec */
2241 #define DISCOV_LE_PER_ADV_INT_MIN       0x00A0  /* 200 msec */
2242 #define DISCOV_LE_PER_ADV_INT_MAX       0x00A0  /* 200 msec */
2243 #define DISCOV_LE_ADV_MESH_MIN          0x00A0  /* 100 msec */
2244 #define DISCOV_LE_ADV_MESH_MAX          0x00A0  /* 100 msec */
2245 #define INTERVAL_TO_MS(x)               (((x) * 10) / 0x10)
2246
2247 #define NAME_RESOLVE_DURATION           msecs_to_jiffies(10240) /* 10.24 sec */
2248
2249 void mgmt_fill_version_info(void *ver);
2250 int mgmt_new_settings(struct hci_dev *hdev);
2251 void mgmt_index_added(struct hci_dev *hdev);
2252 void mgmt_index_removed(struct hci_dev *hdev);
2253 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2254 void mgmt_power_on(struct hci_dev *hdev, int err);
2255 void __mgmt_power_off(struct hci_dev *hdev);
2256 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2257                        bool persistent);
2258 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2259                            u8 *name, u8 name_len);
2260 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2261                               u8 link_type, u8 addr_type, u8 reason,
2262                               bool mgmt_connected);
2263 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2264                             u8 link_type, u8 addr_type, u8 status);
2265 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2266                          u8 addr_type, u8 status);
2267 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2268 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2269                                   u8 status);
2270 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2271                                       u8 status);
2272 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2273                               u8 link_type, u8 addr_type, u32 value,
2274                               u8 confirm_hint);
2275 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2276                                      u8 link_type, u8 addr_type, u8 status);
2277 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2278                                          u8 link_type, u8 addr_type, u8 status);
2279 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2280                               u8 link_type, u8 addr_type);
2281 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2282                                      u8 link_type, u8 addr_type, u8 status);
2283 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2284                                          u8 link_type, u8 addr_type, u8 status);
2285 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2286                              u8 link_type, u8 addr_type, u32 passkey,
2287                              u8 entered);
2288 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2289 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2290 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2291                                     u8 status);
2292 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2293 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2294 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2295 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2296                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2297                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2298                        u64 instant);
2299 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2300                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2301 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2302 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2303 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2304                    u8 addr_type);
2305 bool mgmt_powering_down(struct hci_dev *hdev);
2306 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2307 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2308 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2309                    bool persistent);
2310 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2311                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
2312                          u16 max_interval, u16 latency, u16 timeout);
2313 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2314 bool mgmt_get_connectable(struct hci_dev *hdev);
2315 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2316 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2317                             u8 instance);
2318 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2319                               u8 instance);
2320 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2321 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2322 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2323                                   bdaddr_t *bdaddr, u8 addr_type);
2324
2325 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2326 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2327                       u16 to_multiplier);
2328 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2329                       __u8 ltk[16], __u8 key_size);
2330
2331 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2332                                u8 *bdaddr_type);
2333
2334 #define SCO_AIRMODE_MASK       0x0003
2335 #define SCO_AIRMODE_CVSD       0x0000
2336 #define SCO_AIRMODE_TRANSP     0x0003
2337
2338 #define LOCAL_CODEC_ACL_MASK    BIT(0)
2339 #define LOCAL_CODEC_SCO_MASK    BIT(1)
2340
2341 #define TRANSPORT_TYPE_MAX      0x04
2342
2343 #endif /* __HCI_CORE_H */