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
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 #ifndef __HCI_CORE_H
  26 #define __HCI_CORE_H
  27
  28 #include <linux/idr.h>
  29 #include <linux/leds.h>
  30 #include <linux/rculist.h>
  31
  32 #include <net/bluetooth/hci.h>
  33 #include <net/bluetooth/hci_sync.h>
  34 #include <net/bluetooth/hci_sock.h>
  35
  36 /* HCI priority */
  37 #define HCI_PRIO_MAX    7
  38
  39 /* HCI maximum id value */
  40 #define HCI_MAX_ID 10000
  41
  42 /* HCI Core structures */
  43 struct inquiry_data {
  44         bdaddr_t        bdaddr;
  45         __u8            pscan_rep_mode;
  46         __u8            pscan_period_mode;
  47         __u8            pscan_mode;
  48         __u8            dev_class[3];
  49         __le16          clock_offset;
  50         __s8            rssi;
  51         __u8            ssp_mode;
  52 };
  53
  54 struct inquiry_entry {
  55         struct list_head        all;            /* inq_cache.all */
  56         struct list_head        list;           /* unknown or resolve */
  57         enum {
  58                 NAME_NOT_KNOWN,
  59                 NAME_NEEDED,
  60                 NAME_PENDING,
  61                 NAME_KNOWN,
  62         } name_state;
  63         __u32                   timestamp;
  64         struct inquiry_data     data;
  65 };
  66
  67 struct discovery_state {
  68         int                     type;
  69         enum {
  70                 DISCOVERY_STOPPED,
  71                 DISCOVERY_STARTING,
  72                 DISCOVERY_FINDING,
  73                 DISCOVERY_RESOLVING,
  74                 DISCOVERY_STOPPING,
  75         } state;
  76         struct list_head        all;    /* All devices found during inquiry */
  77         struct list_head        unknown;        /* Name state not known */
  78         struct list_head        resolve;        /* Name needs to be resolved */
  79         __u32                   timestamp;
  80         bdaddr_t                last_adv_addr;
  81         u8                      last_adv_addr_type;
  82         s8                      last_adv_rssi;
  83         u32                     last_adv_flags;
  84         u8                      last_adv_data[HCI_MAX_AD_LENGTH];
  85         u8                      last_adv_data_len;
  86         bool                    report_invalid_rssi;
  87         bool                    result_filtering;
  88         bool                    limited;
  89         s8                      rssi;
  90         u16                     uuid_count;
  91         u8                      (*uuids)[16];
  92         unsigned long           scan_start;
  93         unsigned long           scan_duration;
  94         unsigned long           name_resolve_timeout;
  95 };
  96
  97 #define SUSPEND_NOTIFIER_TIMEOUT        msecs_to_jiffies(2000) /* 2 seconds */
  98
  99 enum suspend_tasks {
 100         SUSPEND_PAUSE_DISCOVERY,
 101         SUSPEND_UNPAUSE_DISCOVERY,
 102
 103         SUSPEND_PAUSE_ADVERTISING,
 104         SUSPEND_UNPAUSE_ADVERTISING,
 105
 106         SUSPEND_SCAN_DISABLE,
 107         SUSPEND_SCAN_ENABLE,
 108         SUSPEND_DISCONNECTING,
 109
 110         SUSPEND_POWERING_DOWN,
 111
 112         SUSPEND_PREPARE_NOTIFIER,
 113
 114         SUSPEND_SET_ADV_FILTER,
 115         __SUSPEND_NUM_TASKS
 116 };
 117
 118 enum suspended_state {
 119         BT_RUNNING = 0,
 120         BT_SUSPEND_DISCONNECT,
 121         BT_SUSPEND_CONFIGURE_WAKE,
 122 };
 123
 124 struct hci_conn_hash {
 125         struct list_head list;
 126         unsigned int     acl_num;
 127         unsigned int     amp_num;
 128         unsigned int     sco_num;
 129         unsigned int     iso_num;
 130         unsigned int     le_num;
 131         unsigned int     le_num_peripheral;
 132 };
 133
 134 struct bdaddr_list {
 135         struct list_head list;
 136         bdaddr_t bdaddr;
 137         u8 bdaddr_type;
 138 };
 139
 140 struct codec_list {
 141         struct list_head list;
 142         u8      id;
 143         __u16   cid;
 144         __u16   vid;
 145         u8      transport;
 146         u8      num_caps;
 147         u32     len;
 148         struct hci_codec_caps caps[];
 149 };
 150
 151 struct bdaddr_list_with_irk {
 152         struct list_head list;
 153         bdaddr_t bdaddr;
 154         u8 bdaddr_type;
 155         u8 peer_irk[16];
 156         u8 local_irk[16];
 157 };
 158
 159 /* Bitmask of connection flags */
 160 enum hci_conn_flags {
 161         HCI_CONN_FLAG_REMOTE_WAKEUP = 1,
 162         HCI_CONN_FLAG_DEVICE_PRIVACY = 2,
 163 };
 164 typedef u8 hci_conn_flags_t;
 165
 166 struct bdaddr_list_with_flags {
 167         struct list_head list;
 168         bdaddr_t bdaddr;
 169         u8 bdaddr_type;
 170         hci_conn_flags_t flags;
 171 };
 172
 173 struct bt_uuid {
 174         struct list_head list;
 175         u8 uuid[16];
 176         u8 size;
 177         u8 svc_hint;
 178 };
 179
 180 struct blocked_key {
 181         struct list_head list;
 182         struct rcu_head rcu;
 183         u8 type;
 184         u8 val[16];
 185 };
 186
 187 struct smp_csrk {
 188         bdaddr_t bdaddr;
 189         u8 bdaddr_type;
 190         u8 type;
 191         u8 val[16];
 192 };
 193
 194 struct smp_ltk {
 195         struct list_head list;
 196         struct rcu_head rcu;
 197         bdaddr_t bdaddr;
 198         u8 bdaddr_type;
 199         u8 authenticated;
 200         u8 type;
 201         u8 enc_size;
 202         __le16 ediv;
 203         __le64 rand;
 204         u8 val[16];
 205 };
 206
 207 struct smp_irk {
 208         struct list_head list;
 209         struct rcu_head rcu;
 210         bdaddr_t rpa;
 211         bdaddr_t bdaddr;
 212         u8 addr_type;
 213         u8 val[16];
 214 };
 215
 216 struct link_key {
 217         struct list_head list;
 218         struct rcu_head rcu;
 219         bdaddr_t bdaddr;
 220         u8 type;
 221         u8 val[HCI_LINK_KEY_SIZE];
 222         u8 pin_len;
 223 };
 224
 225 struct oob_data {
 226         struct list_head list;
 227         bdaddr_t bdaddr;
 228         u8 bdaddr_type;
 229         u8 present;
 230         u8 hash192[16];
 231         u8 rand192[16];
 232         u8 hash256[16];
 233         u8 rand256[16];
 234 };
 235
 236 struct adv_info {
 237         struct list_head list;
 238         bool    enabled;
 239         bool    pending;
 240         bool    periodic;
 241         __u8    mesh;
 242         __u8    instance;
 243         __u32   flags;
 244         __u16   timeout;
 245         __u16   remaining_time;
 246         __u16   duration;
 247         __u16   adv_data_len;
 248         __u8    adv_data[HCI_MAX_EXT_AD_LENGTH];
 249         bool    adv_data_changed;
 250         __u16   scan_rsp_len;
 251         __u8    scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
 252         bool    scan_rsp_changed;
 253         __u16   per_adv_data_len;
 254         __u8    per_adv_data[HCI_MAX_PER_AD_LENGTH];
 255         __s8    tx_power;
 256         __u32   min_interval;
 257         __u32   max_interval;
 258         bdaddr_t        random_addr;
 259         bool            rpa_expired;
 260         struct delayed_work     rpa_expired_cb;
 261 };
 262
 263 #define HCI_MAX_ADV_INSTANCES           5
 264 #define HCI_DEFAULT_ADV_DURATION        2
 265
 266 #define HCI_ADV_TX_POWER_NO_PREFERENCE 0x7F
 267
 268 #define DATA_CMP(_d1, _l1, _d2, _l2) \
 269         (_l1 == _l2 ? memcmp(_d1, _d2, _l1) : _l1 - _l2)
 270
 271 #define ADV_DATA_CMP(_adv, _data, _len) \
 272         DATA_CMP((_adv)->adv_data, (_adv)->adv_data_len, _data, _len)
 273
 274 #define SCAN_RSP_CMP(_adv, _data, _len) \
 275         DATA_CMP((_adv)->scan_rsp_data, (_adv)->scan_rsp_len, _data, _len)
 276
 277 struct monitored_device {
 278         struct list_head list;
 279
 280         bdaddr_t bdaddr;
 281         __u8     addr_type;
 282         __u16    handle;
 283         bool     notified;
 284 };
 285
 286 struct adv_pattern {
 287         struct list_head list;
 288         __u8 ad_type;
 289         __u8 offset;
 290         __u8 length;
 291         __u8 value[HCI_MAX_AD_LENGTH];
 292 };
 293
 294 struct adv_rssi_thresholds {
 295         __s8 low_threshold;
 296         __s8 high_threshold;
 297         __u16 low_threshold_timeout;
 298         __u16 high_threshold_timeout;
 299         __u8 sampling_period;
 300 };
 301
 302 struct adv_monitor {
 303         struct list_head patterns;
 304         struct adv_rssi_thresholds rssi;
 305         __u16           handle;
 306
 307         enum {
 308                 ADV_MONITOR_STATE_NOT_REGISTERED,
 309                 ADV_MONITOR_STATE_REGISTERED,
 310                 ADV_MONITOR_STATE_OFFLOADED
 311         } state;
 312 };
 313
 314 #define HCI_MIN_ADV_MONITOR_HANDLE              1
 315 #define HCI_MAX_ADV_MONITOR_NUM_HANDLES         32
 316 #define HCI_MAX_ADV_MONITOR_NUM_PATTERNS        16
 317 #define HCI_ADV_MONITOR_EXT_NONE                1
 318 #define HCI_ADV_MONITOR_EXT_MSFT                2
 319
 320 #define HCI_MAX_SHORT_NAME_LENGTH       10
 321
 322 #define HCI_CONN_HANDLE_UNSET           0xffff
 323 #define HCI_CONN_HANDLE_MAX             0x0eff
 324
 325 /* Min encryption key size to match with SMP */
 326 #define HCI_MIN_ENC_KEY_SIZE            7
 327
 328 /* Default LE RPA expiry time, 15 minutes */
 329 #define HCI_DEFAULT_RPA_TIMEOUT         (15 * 60)
 330
 331 /* Default min/max age of connection information (1s/3s) */
 332 #define DEFAULT_CONN_INFO_MIN_AGE       1000
 333 #define DEFAULT_CONN_INFO_MAX_AGE       3000
 334 /* Default authenticated payload timeout 30s */
 335 #define DEFAULT_AUTH_PAYLOAD_TIMEOUT   0x0bb8
 336
 337 struct amp_assoc {
 338         __u16   len;
 339         __u16   offset;
 340         __u16   rem_len;
 341         __u16   len_so_far;
 342         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
 343 };
 344
 345 #define HCI_MAX_PAGES   3
 346
 347 struct hci_dev {
 348         struct list_head list;
 349         struct mutex    lock;
 350
 351         char            name[8];
 352         unsigned long   flags;
 353         __u16           id;
 354         __u8            bus;
 355         __u8            dev_type;
 356         bdaddr_t        bdaddr;
 357         bdaddr_t        setup_addr;
 358         bdaddr_t        public_addr;
 359         bdaddr_t        random_addr;
 360         bdaddr_t        static_addr;
 361         __u8            adv_addr_type;
 362         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 363         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 364         __u8            eir[HCI_MAX_EIR_LENGTH];
 365         __u16           appearance;
 366         __u8            dev_class[3];
 367         __u8            major_class;
 368         __u8            minor_class;
 369         __u8            max_page;
 370         __u8            features[HCI_MAX_PAGES][8];
 371         __u8            le_features[8];
 372         __u8            le_accept_list_size;
 373         __u8            le_resolv_list_size;
 374         __u8            le_num_of_adv_sets;
 375         __u8            le_states[8];
 376         __u8            mesh_ad_types[16];
 377         __u8            mesh_send_ref;
 378         __u8            commands[64];
 379         __u8            hci_ver;
 380         __u16           hci_rev;
 381         __u8            lmp_ver;
 382         __u16           manufacturer;
 383         __u16           lmp_subver;
 384         __u16           voice_setting;
 385         __u8            num_iac;
 386         __u16           stored_max_keys;
 387         __u16           stored_num_keys;
 388         __u8            io_capability;
 389         __s8            inq_tx_power;
 390         __u8            err_data_reporting;
 391         __u16           page_scan_interval;
 392         __u16           page_scan_window;
 393         __u8            page_scan_type;
 394         __u8            le_adv_channel_map;
 395         __u16           le_adv_min_interval;
 396         __u16           le_adv_max_interval;
 397         __u8            le_scan_type;
 398         __u16           le_scan_interval;
 399         __u16           le_scan_window;
 400         __u16           le_scan_int_suspend;
 401         __u16           le_scan_window_suspend;
 402         __u16           le_scan_int_discovery;
 403         __u16           le_scan_window_discovery;
 404         __u16           le_scan_int_adv_monitor;
 405         __u16           le_scan_window_adv_monitor;
 406         __u16           le_scan_int_connect;
 407         __u16           le_scan_window_connect;
 408         __u16           le_conn_min_interval;
 409         __u16           le_conn_max_interval;
 410         __u16           le_conn_latency;
 411         __u16           le_supv_timeout;
 412         __u16           le_def_tx_len;
 413         __u16           le_def_tx_time;
 414         __u16           le_max_tx_len;
 415         __u16           le_max_tx_time;
 416         __u16           le_max_rx_len;
 417         __u16           le_max_rx_time;
 418         __u8            le_max_key_size;
 419         __u8            le_min_key_size;
 420         __u16           discov_interleaved_timeout;
 421         __u16           conn_info_min_age;
 422         __u16           conn_info_max_age;
 423         __u16           auth_payload_timeout;
 424         __u8            min_enc_key_size;
 425         __u8            max_enc_key_size;
 426         __u8            pairing_opts;
 427         __u8            ssp_debug_mode;
 428         __u8            hw_error_code;
 429         __u32           clock;
 430         __u16           advmon_allowlist_duration;
 431         __u16           advmon_no_filter_duration;
 432         __u8            enable_advmon_interleave_scan;
 433
 434         __u16           devid_source;
 435         __u16           devid_vendor;
 436         __u16           devid_product;
 437         __u16           devid_version;
 438
 439         __u8            def_page_scan_type;
 440         __u16           def_page_scan_int;
 441         __u16           def_page_scan_window;
 442         __u8            def_inq_scan_type;
 443         __u16           def_inq_scan_int;
 444         __u16           def_inq_scan_window;
 445         __u16           def_br_lsto;
 446         __u16           def_page_timeout;
 447         __u16           def_multi_adv_rotation_duration;
 448         __u16           def_le_autoconnect_timeout;
 449         __s8            min_le_tx_power;
 450         __s8            max_le_tx_power;
 451
 452         __u16           pkt_type;
 453         __u16           esco_type;
 454         __u16           link_policy;
 455         __u16           link_mode;
 456
 457         __u32           idle_timeout;
 458         __u16           sniff_min_interval;
 459         __u16           sniff_max_interval;
 460
 461         __u8            amp_status;
 462         __u32           amp_total_bw;
 463         __u32           amp_max_bw;
 464         __u32           amp_min_latency;
 465         __u32           amp_max_pdu;
 466         __u8            amp_type;
 467         __u16           amp_pal_cap;
 468         __u16           amp_assoc_size;
 469         __u32           amp_max_flush_to;
 470         __u32           amp_be_flush_to;
 471
 472         struct amp_assoc        loc_assoc;
 473
 474         __u8            flow_ctl_mode;
 475
 476         unsigned int    auto_accept_delay;
 477
 478         unsigned long   quirks;
 479
 480         atomic_t        cmd_cnt;
 481         unsigned int    acl_cnt;
 482         unsigned int    sco_cnt;
 483         unsigned int    le_cnt;
 484         unsigned int    iso_cnt;
 485
 486         unsigned int    acl_mtu;
 487         unsigned int    sco_mtu;
 488         unsigned int    le_mtu;
 489         unsigned int    iso_mtu;
 490         unsigned int    acl_pkts;
 491         unsigned int    sco_pkts;
 492         unsigned int    le_pkts;
 493         unsigned int    iso_pkts;
 494
 495         __u16           block_len;
 496         __u16           block_mtu;
 497         __u16           num_blocks;
 498         __u16           block_cnt;
 499
 500         unsigned long   acl_last_tx;
 501         unsigned long   sco_last_tx;
 502         unsigned long   le_last_tx;
 503
 504         __u8            le_tx_def_phys;
 505         __u8            le_rx_def_phys;
 506
 507         struct workqueue_struct *workqueue;
 508         struct workqueue_struct *req_workqueue;
 509
 510         struct work_struct      power_on;
 511         struct delayed_work     power_off;
 512         struct work_struct      error_reset;
 513         struct work_struct      cmd_sync_work;
 514         struct list_head        cmd_sync_work_list;
 515         struct mutex            cmd_sync_work_lock;
 516         struct mutex            unregister_lock;
 517         struct work_struct      cmd_sync_cancel_work;
 518         struct work_struct      reenable_adv_work;
 519
 520         __u16                   discov_timeout;
 521         struct delayed_work     discov_off;
 522
 523         struct delayed_work     service_cache;
 524
 525         struct delayed_work     cmd_timer;
 526         struct delayed_work     ncmd_timer;
 527
 528         struct work_struct      rx_work;
 529         struct work_struct      cmd_work;
 530         struct work_struct      tx_work;
 531
 532         struct delayed_work     le_scan_disable;
 533         struct delayed_work     le_scan_restart;
 534
 535         struct sk_buff_head     rx_q;
 536         struct sk_buff_head     raw_q;
 537         struct sk_buff_head     cmd_q;
 538
 539         struct sk_buff          *sent_cmd;
 540         struct sk_buff          *recv_event;
 541
 542         struct mutex            req_lock;
 543         wait_queue_head_t       req_wait_q;
 544         __u32                   req_status;
 545         __u32                   req_result;
 546         struct sk_buff          *req_skb;
 547
 548         void                    *smp_data;
 549         void                    *smp_bredr_data;
 550
 551         struct discovery_state  discovery;
 552
 553         int                     discovery_old_state;
 554         bool                    discovery_paused;
 555         int                     advertising_old_state;
 556         bool                    advertising_paused;
 557
 558         struct notifier_block   suspend_notifier;
 559         enum suspended_state    suspend_state_next;
 560         enum suspended_state    suspend_state;
 561         bool                    scanning_paused;
 562         bool                    suspended;
 563         u8                      wake_reason;
 564         bdaddr_t                wake_addr;
 565         u8                      wake_addr_type;
 566
 567         struct hci_conn_hash    conn_hash;
 568
 569         struct list_head        mesh_pending;
 570         struct list_head        mgmt_pending;
 571         struct list_head        reject_list;
 572         struct list_head        accept_list;
 573         struct list_head        uuids;
 574         struct list_head        link_keys;
 575         struct list_head        long_term_keys;
 576         struct list_head        identity_resolving_keys;
 577         struct list_head        remote_oob_data;
 578         struct list_head        le_accept_list;
 579         struct list_head        le_resolv_list;
 580         struct list_head        le_conn_params;
 581         struct list_head        pend_le_conns;
 582         struct list_head        pend_le_reports;
 583         struct list_head        blocked_keys;
 584         struct list_head        local_codecs;
 585
 586         struct hci_dev_stats    stat;
 587
 588         atomic_t                promisc;
 589
 590         const char              *hw_info;
 591         const char              *fw_info;
 592         struct dentry           *debugfs;
 593
 594         struct device           dev;
 595
 596         struct rfkill           *rfkill;
 597
 598         DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
 599         hci_conn_flags_t        conn_flags;
 600
 601         __s8                    adv_tx_power;
 602         __u8                    adv_data[HCI_MAX_EXT_AD_LENGTH];
 603         __u8                    adv_data_len;
 604         __u8                    scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
 605         __u8                    scan_rsp_data_len;
 606         __u8                    per_adv_data[HCI_MAX_PER_AD_LENGTH];
 607         __u8                    per_adv_data_len;
 608
 609         struct list_head        adv_instances;
 610         unsigned int            adv_instance_cnt;
 611         __u8                    cur_adv_instance;
 612         __u16                   adv_instance_timeout;
 613         struct delayed_work     adv_instance_expire;
 614
 615         struct idr              adv_monitors_idr;
 616         unsigned int            adv_monitors_cnt;
 617
 618         __u8                    irk[16];
 619         __u32                   rpa_timeout;
 620         struct delayed_work     rpa_expired;
 621         bdaddr_t                rpa;
 622
 623         struct delayed_work     mesh_send_done;
 624
 625         enum {
 626                 INTERLEAVE_SCAN_NONE,
 627                 INTERLEAVE_SCAN_NO_FILTER,
 628                 INTERLEAVE_SCAN_ALLOWLIST
 629         } interleave_scan_state;
 630
 631         struct delayed_work     interleave_scan;
 632
 633         struct list_head        monitored_devices;
 634         bool                    advmon_pend_notify;
 635
 636 #if IS_ENABLED(CONFIG_BT_LEDS)
 637         struct led_trigger      *power_led;
 638 #endif
 639
 640 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
 641         __u16                   msft_opcode;
 642         void                    *msft_data;
 643         bool                    msft_curve_validity;
 644 #endif
 645
 646 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
 647         bool                    aosp_capable;
 648         bool                    aosp_quality_report;
 649 #endif
 650
 651 #ifdef TIZEN_BT
 652         __u8                    adv_filter_policy;
 653         __u8                    adv_type;
 654 #endif
 655
 656         int (*open)(struct hci_dev *hdev);
 657         int (*close)(struct hci_dev *hdev);
 658         int (*flush)(struct hci_dev *hdev);
 659         int (*setup)(struct hci_dev *hdev);
 660         int (*shutdown)(struct hci_dev *hdev);
 661         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 662         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 663         void (*hw_error)(struct hci_dev *hdev, u8 code);
 664         int (*post_init)(struct hci_dev *hdev);
 665         int (*set_diag)(struct hci_dev *hdev, bool enable);
 666         int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 667         void (*cmd_timeout)(struct hci_dev *hdev);
 668         bool (*wakeup)(struct hci_dev *hdev);
 669         int (*set_quality_report)(struct hci_dev *hdev, bool enable);
 670         int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
 671         int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
 672                                      struct bt_codec *codec, __u8 *vnd_len,
 673                                      __u8 **vnd_data);
 674 };
 675
 676 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 677
 678 enum conn_reasons {
 679         CONN_REASON_PAIR_DEVICE,
 680         CONN_REASON_L2CAP_CHAN,
 681         CONN_REASON_SCO_CONNECT,
 682         CONN_REASON_ISO_CONNECT,
 683 };
 684
 685 struct hci_conn {
 686         struct list_head list;
 687
 688         atomic_t        refcnt;
 689
 690         bdaddr_t        dst;
 691         __u8            dst_type;
 692         bdaddr_t        src;
 693         __u8            src_type;
 694         bdaddr_t        init_addr;
 695         __u8            init_addr_type;
 696         bdaddr_t        resp_addr;
 697         __u8            resp_addr_type;
 698         __u8            adv_instance;
 699         __u16           handle;
 700         __u16           sync_handle;
 701         __u16           state;
 702         __u8            mode;
 703         __u8            type;
 704         __u8            role;
 705         bool            out;
 706         __u8            attempt;
 707         __u8            dev_class[3];
 708         __u8            features[HCI_MAX_PAGES][8];
 709         __u16           pkt_type;
 710         __u16           link_policy;
 711         __u8            key_type;
 712         __u8            auth_type;
 713         __u8            sec_level;
 714         __u8            pending_sec_level;
 715         __u8            pin_length;
 716         __u8            enc_key_size;
 717         __u8            io_capability;
 718         __u32           passkey_notify;
 719         __u8            passkey_entered;
 720         __u16           disc_timeout;
 721         __u16           conn_timeout;
 722         __u16           setting;
 723         __u16           auth_payload_timeout;
 724         __u16           le_conn_min_interval;
 725         __u16           le_conn_max_interval;
 726         __u16           le_conn_interval;
 727         __u16           le_conn_latency;
 728         __u16           le_supv_timeout;
 729         __u8            le_adv_data[HCI_MAX_AD_LENGTH];
 730         __u8            le_adv_data_len;
 731         __u8            le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
 732         __u8            le_per_adv_data_len;
 733         __u8            le_tx_phy;
 734         __u8            le_rx_phy;
 735         __s8            rssi;
 736         __s8            tx_power;
 737         __s8            max_tx_power;
 738         struct bt_iso_qos iso_qos;
 739         unsigned long   flags;
 740
 741         enum conn_reasons conn_reason;
 742
 743         __u32           clock;
 744         __u16           clock_accuracy;
 745
 746         unsigned long   conn_info_timestamp;
 747
 748         __u8            remote_cap;
 749         __u8            remote_auth;
 750         __u8            remote_id;
 751
 752         unsigned int    sent;
 753
 754         struct sk_buff_head data_q;
 755         struct list_head chan_list;
 756
 757         struct delayed_work disc_work;
 758         struct delayed_work auto_accept_work;
 759         struct delayed_work idle_work;
 760         struct delayed_work le_conn_timeout;
 761         struct work_struct  le_scan_cleanup;
 762
 763         struct device   dev;
 764         struct dentry   *debugfs;
 765
 766         struct hci_dev  *hdev;
 767         void            *l2cap_data;
 768         void            *sco_data;
 769         void            *iso_data;
 770         struct amp_mgr  *amp_mgr;
 771
 772 #ifdef TIZEN_BT
 773         bool            rssi_monitored;
 774 #endif
 775         struct hci_conn *link;
 776         struct bt_codec codec;
 777
 778         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 779         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 780         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 781
 782         void (*cleanup)(struct hci_conn *conn);
 783 };
 784
 785 struct hci_chan {
 786         struct list_head list;
 787         __u16 handle;
 788         struct hci_conn *conn;
 789         struct sk_buff_head data_q;
 790         unsigned int    sent;
 791         __u8            state;
 792         bool            amp;
 793 };
 794
 795 struct hci_conn_params {
 796         struct list_head list;
 797         struct list_head action;
 798
 799         bdaddr_t addr;
 800         u8 addr_type;
 801
 802         u16 conn_min_interval;
 803         u16 conn_max_interval;
 804         u16 conn_latency;
 805         u16 supervision_timeout;
 806
 807         enum {
 808                 HCI_AUTO_CONN_DISABLED,
 809                 HCI_AUTO_CONN_REPORT,
 810                 HCI_AUTO_CONN_DIRECT,
 811                 HCI_AUTO_CONN_ALWAYS,
 812                 HCI_AUTO_CONN_LINK_LOSS,
 813                 HCI_AUTO_CONN_EXPLICIT,
 814         } auto_connect;
 815
 816         struct hci_conn *conn;
 817         bool explicit_connect;
 818         hci_conn_flags_t flags;
 819         u8  privacy_mode;
 820 };
 821
 822 extern struct list_head hci_dev_list;
 823 extern struct list_head hci_cb_list;
 824 extern rwlock_t hci_dev_list_lock;
 825 extern struct mutex hci_cb_list_lock;
 826
 827 #define hci_dev_set_flag(hdev, nr)             set_bit((nr), (hdev)->dev_flags)
 828 #define hci_dev_clear_flag(hdev, nr)           clear_bit((nr), (hdev)->dev_flags)
 829 #define hci_dev_change_flag(hdev, nr)          change_bit((nr), (hdev)->dev_flags)
 830 #define hci_dev_test_flag(hdev, nr)            test_bit((nr), (hdev)->dev_flags)
 831 #define hci_dev_test_and_set_flag(hdev, nr)    test_and_set_bit((nr), (hdev)->dev_flags)
 832 #define hci_dev_test_and_clear_flag(hdev, nr)  test_and_clear_bit((nr), (hdev)->dev_flags)
 833 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
 834
 835 #define hci_dev_clear_volatile_flags(hdev)                      \
 836         do {                                                    \
 837                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);          \
 838                 hci_dev_clear_flag(hdev, HCI_LE_ADV);           \
 839                 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
 840                 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);     \
 841                 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT);   \
 842         } while (0)
 843
 844 #define hci_dev_le_state_simultaneous(hdev) \
 845         (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
 846          (hdev->le_states[4] & 0x08) && /* Central */ \
 847          (hdev->le_states[4] & 0x40) && /* Peripheral */ \
 848          (hdev->le_states[3] & 0x10))   /* Simultaneous */
 849
 850 /* ----- HCI interface to upper protocols ----- */
 851 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 852 int l2cap_disconn_ind(struct hci_conn *hcon);
 853 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 854
 855 #if IS_ENABLED(CONFIG_BT_BREDR)
 856 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 857 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 858 #else
 859 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 860                                   __u8 *flags)
 861 {
 862         return 0;
 863 }
 864
 865 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
 866 {
 867 }
 868 #endif
 869
 870 #if IS_ENABLED(CONFIG_BT_LE)
 871 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 872 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 873 #else
 874 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 875                                   __u8 *flags)
 876 {
 877         return 0;
 878 }
 879 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
 880                             u16 flags)
 881 {
 882 }
 883 #endif
 884
 885 /* ----- Inquiry cache ----- */
 886 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 887 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 888
 889 static inline void discovery_init(struct hci_dev *hdev)
 890 {
 891         hdev->discovery.state = DISCOVERY_STOPPED;
 892         INIT_LIST_HEAD(&hdev->discovery.all);
 893         INIT_LIST_HEAD(&hdev->discovery.unknown);
 894         INIT_LIST_HEAD(&hdev->discovery.resolve);
 895         hdev->discovery.report_invalid_rssi = true;
 896         hdev->discovery.rssi = HCI_RSSI_INVALID;
 897 }
 898
 899 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 900 {
 901         hdev->discovery.result_filtering = false;
 902         hdev->discovery.report_invalid_rssi = true;
 903         hdev->discovery.rssi = HCI_RSSI_INVALID;
 904         hdev->discovery.uuid_count = 0;
 905         kfree(hdev->discovery.uuids);
 906         hdev->discovery.uuids = NULL;
 907         hdev->discovery.scan_start = 0;
 908         hdev->discovery.scan_duration = 0;
 909 }
 910
 911 bool hci_discovery_active(struct hci_dev *hdev);
 912
 913 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 914
 915 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 916 {
 917         return list_empty(&hdev->discovery.all);
 918 }
 919
 920 static inline long inquiry_cache_age(struct hci_dev *hdev)
 921 {
 922         struct discovery_state *c = &hdev->discovery;
 923         return jiffies - c->timestamp;
 924 }
 925
 926 static inline long inquiry_entry_age(struct inquiry_entry *e)
 927 {
 928         return jiffies - e->timestamp;
 929 }
 930
 931 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 932                                                bdaddr_t *bdaddr);
 933 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 934                                                        bdaddr_t *bdaddr);
 935 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 936                                                        bdaddr_t *bdaddr,
 937                                                        int state);
 938 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 939                                       struct inquiry_entry *ie);
 940 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 941                              bool name_known);
 942 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 943
 944 /* ----- HCI Connections ----- */
 945 enum {
 946         HCI_CONN_AUTH_PEND,
 947         HCI_CONN_REAUTH_PEND,
 948         HCI_CONN_ENCRYPT_PEND,
 949         HCI_CONN_RSWITCH_PEND,
 950         HCI_CONN_MODE_CHANGE_PEND,
 951         HCI_CONN_SCO_SETUP_PEND,
 952         HCI_CONN_MGMT_CONNECTED,
 953         HCI_CONN_SSP_ENABLED,
 954         HCI_CONN_SC_ENABLED,
 955         HCI_CONN_AES_CCM,
 956         HCI_CONN_POWER_SAVE,
 957         HCI_CONN_FLUSH_KEY,
 958         HCI_CONN_ENCRYPT,
 959         HCI_CONN_AUTH,
 960         HCI_CONN_SECURE,
 961         HCI_CONN_FIPS,
 962         HCI_CONN_STK_ENCRYPT,
 963         HCI_CONN_AUTH_INITIATOR,
 964         HCI_CONN_DROP,
 965         HCI_CONN_CANCEL,
 966         HCI_CONN_PARAM_REMOVAL_PEND,
 967         HCI_CONN_NEW_LINK_KEY,
 968         HCI_CONN_SCANNING,
 969         HCI_CONN_AUTH_FAILURE,
 970         HCI_CONN_PER_ADV,
 971 };
 972
 973 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 974 {
 975         struct hci_dev *hdev = conn->hdev;
 976         return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
 977                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 978 }
 979
 980 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
 981 {
 982         struct hci_dev *hdev = conn->hdev;
 983         return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
 984                test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
 985 }
 986
 987 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 988 {
 989         struct hci_conn_hash *h = &hdev->conn_hash;
 990         list_add_rcu(&c->list, &h->list);
 991         switch (c->type) {
 992         case ACL_LINK:
 993                 h->acl_num++;
 994                 break;
 995         case AMP_LINK:
 996                 h->amp_num++;
 997                 break;
 998         case LE_LINK:
 999                 h->le_num++;
1000                 if (c->role == HCI_ROLE_SLAVE)
1001                         h->le_num_peripheral++;
1002                 break;
1003         case SCO_LINK:
1004         case ESCO_LINK:
1005                 h->sco_num++;
1006                 break;
1007         case ISO_LINK:
1008                 h->iso_num++;
1009                 break;
1010         }
1011 }
1012
1013 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1014 {
1015         struct hci_conn_hash *h = &hdev->conn_hash;
1016
1017         list_del_rcu(&c->list);
1018         synchronize_rcu();
1019
1020         switch (c->type) {
1021         case ACL_LINK:
1022                 h->acl_num--;
1023                 break;
1024         case AMP_LINK:
1025                 h->amp_num--;
1026                 break;
1027         case LE_LINK:
1028                 h->le_num--;
1029                 if (c->role == HCI_ROLE_SLAVE)
1030                         h->le_num_peripheral--;
1031                 break;
1032         case SCO_LINK:
1033         case ESCO_LINK:
1034                 h->sco_num--;
1035                 break;
1036         case ISO_LINK:
1037                 h->iso_num--;
1038                 break;
1039         }
1040 }
1041
1042 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1043 {
1044         struct hci_conn_hash *h = &hdev->conn_hash;
1045         switch (type) {
1046         case ACL_LINK:
1047                 return h->acl_num;
1048         case AMP_LINK:
1049                 return h->amp_num;
1050         case LE_LINK:
1051                 return h->le_num;
1052         case SCO_LINK:
1053         case ESCO_LINK:
1054                 return h->sco_num;
1055         case ISO_LINK:
1056                 return h->iso_num;
1057         default:
1058                 return 0;
1059         }
1060 }
1061
1062 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1063 {
1064         struct hci_conn_hash *c = &hdev->conn_hash;
1065
1066         return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
1067 }
1068
1069 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1070 {
1071         struct hci_conn_hash *h = &hdev->conn_hash;
1072         struct hci_conn *c;
1073         __u8 type = INVALID_LINK;
1074
1075         rcu_read_lock();
1076
1077         list_for_each_entry_rcu(c, &h->list, list) {
1078                 if (c->handle == handle) {
1079                         type = c->type;
1080                         break;
1081                 }
1082         }
1083
1084         rcu_read_unlock();
1085
1086         return type;
1087 }
1088
1089 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1090                                                         bdaddr_t *ba,
1091                                                         __u8 big, __u8 bis)
1092 {
1093         struct hci_conn_hash *h = &hdev->conn_hash;
1094         struct hci_conn  *c;
1095
1096         rcu_read_lock();
1097
1098         list_for_each_entry_rcu(c, &h->list, list) {
1099                 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1100                         continue;
1101
1102                 if (c->iso_qos.big == big && c->iso_qos.bis == bis) {
1103                         rcu_read_unlock();
1104                         return c;
1105                 }
1106         }
1107         rcu_read_unlock();
1108
1109         return NULL;
1110 }
1111
1112 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1113                                                                 __u16 handle)
1114 {
1115         struct hci_conn_hash *h = &hdev->conn_hash;
1116         struct hci_conn  *c;
1117
1118         rcu_read_lock();
1119
1120         list_for_each_entry_rcu(c, &h->list, list) {
1121                 if (c->handle == handle) {
1122                         rcu_read_unlock();
1123                         return c;
1124                 }
1125         }
1126         rcu_read_unlock();
1127
1128         return NULL;
1129 }
1130
1131 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1132                                                         __u8 type, bdaddr_t *ba)
1133 {
1134         struct hci_conn_hash *h = &hdev->conn_hash;
1135         struct hci_conn  *c;
1136
1137         rcu_read_lock();
1138
1139         list_for_each_entry_rcu(c, &h->list, list) {
1140                 if (c->type == type && !bacmp(&c->dst, ba)) {
1141                         rcu_read_unlock();
1142                         return c;
1143                 }
1144         }
1145
1146         rcu_read_unlock();
1147
1148         return NULL;
1149 }
1150
1151 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1152                                                        bdaddr_t *ba,
1153                                                        __u8 ba_type)
1154 {
1155         struct hci_conn_hash *h = &hdev->conn_hash;
1156         struct hci_conn  *c;
1157
1158         rcu_read_lock();
1159
1160         list_for_each_entry_rcu(c, &h->list, list) {
1161                 if (c->type != LE_LINK)
1162                        continue;
1163
1164                 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1165                         rcu_read_unlock();
1166                         return c;
1167                 }
1168         }
1169
1170         rcu_read_unlock();
1171
1172         return NULL;
1173 }
1174
1175 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1176                                                         bdaddr_t *ba,
1177                                                         __u8 ba_type)
1178 {
1179         struct hci_conn_hash *h = &hdev->conn_hash;
1180         struct hci_conn  *c;
1181
1182         rcu_read_lock();
1183
1184         list_for_each_entry_rcu(c, &h->list, list) {
1185                 if (c->type != ISO_LINK)
1186                         continue;
1187
1188                 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1189                         rcu_read_unlock();
1190                         return c;
1191                 }
1192         }
1193
1194         rcu_read_unlock();
1195
1196         return NULL;
1197 }
1198
1199 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1200                                                         __u8 handle)
1201 {
1202         struct hci_conn_hash *h = &hdev->conn_hash;
1203         struct hci_conn  *c;
1204
1205         rcu_read_lock();
1206
1207         list_for_each_entry_rcu(c, &h->list, list) {
1208                 if (c->type != ISO_LINK)
1209                         continue;
1210
1211                 if (handle == c->iso_qos.cig) {
1212                         rcu_read_unlock();
1213                         return c;
1214                 }
1215         }
1216
1217         rcu_read_unlock();
1218
1219         return NULL;
1220 }
1221
1222 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1223                                                         __u8 handle)
1224 {
1225         struct hci_conn_hash *h = &hdev->conn_hash;
1226         struct hci_conn  *c;
1227
1228         rcu_read_lock();
1229
1230         list_for_each_entry_rcu(c, &h->list, list) {
1231                 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1232                         continue;
1233
1234                 if (handle == c->iso_qos.big) {
1235                         rcu_read_unlock();
1236                         return c;
1237                 }
1238         }
1239
1240         rcu_read_unlock();
1241
1242         return NULL;
1243 }
1244
1245 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1246                                                         __u8 type, __u16 state)
1247 {
1248         struct hci_conn_hash *h = &hdev->conn_hash;
1249         struct hci_conn  *c;
1250
1251         rcu_read_lock();
1252
1253         list_for_each_entry_rcu(c, &h->list, list) {
1254                 if (c->type == type && c->state == state) {
1255                         rcu_read_unlock();
1256                         return c;
1257                 }
1258         }
1259
1260         rcu_read_unlock();
1261
1262         return NULL;
1263 }
1264
1265 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1266 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1267                                             hci_conn_func_t func, __u8 type,
1268                                             __u16 state, void *data)
1269 {
1270         struct hci_conn_hash *h = &hdev->conn_hash;
1271         struct hci_conn  *c;
1272
1273         if (!func)
1274                 return;
1275
1276         rcu_read_lock();
1277
1278         list_for_each_entry_rcu(c, &h->list, list) {
1279                 if (c->type == type && c->state == state)
1280                         func(c, data);
1281         }
1282
1283         rcu_read_unlock();
1284 }
1285
1286 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1287 {
1288         struct hci_conn_hash *h = &hdev->conn_hash;
1289         struct hci_conn  *c;
1290
1291         rcu_read_lock();
1292
1293         list_for_each_entry_rcu(c, &h->list, list) {
1294                 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1295                     !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1296                         rcu_read_unlock();
1297                         return c;
1298                 }
1299         }
1300
1301         rcu_read_unlock();
1302
1303         return NULL;
1304 }
1305
1306 #ifdef TIZEN_BT
1307 static inline bool hci_conn_rssi_state_set(struct hci_dev *hdev,
1308                                         __u8 type, bdaddr_t *ba, bool value)
1309 {
1310         struct hci_conn_hash *h = &hdev->conn_hash;
1311         struct hci_conn  *c;
1312         __u8 conn_type;
1313
1314         if (type == 0x01)
1315                 conn_type = LE_LINK;
1316         else
1317                 conn_type = ACL_LINK;
1318
1319         rcu_read_lock();
1320
1321         list_for_each_entry_rcu(c, &h->list, list) {
1322                 if (c->type == conn_type && !bacmp(&c->dst, ba)) {
1323                         c->rssi_monitored = value;
1324                         rcu_read_unlock();
1325                         return true;
1326                 }
1327         }
1328
1329         rcu_read_unlock();
1330         return false;
1331 }
1332
1333 static inline void hci_conn_rssi_unset_all(struct hci_dev *hdev,
1334                                         __u8 type)
1335 {
1336         struct hci_conn_hash *h = &hdev->conn_hash;
1337         struct hci_conn  *c;
1338         __u8 conn_type;
1339
1340         if (type == 0x01)
1341                 conn_type = LE_LINK;
1342         else
1343                 conn_type = ACL_LINK;
1344
1345         rcu_read_lock();
1346         list_for_each_entry_rcu(c, &h->list, list) {
1347                 if (c->type == conn_type)
1348                         c->rssi_monitored = false;
1349         }
1350         rcu_read_unlock();
1351 }
1352
1353 static inline int hci_conn_hash_lookup_rssi_count(struct hci_dev *hdev)
1354 {
1355         struct hci_conn_hash *h = &hdev->conn_hash;
1356         struct hci_conn  *c;
1357         int count = 0;
1358
1359         rcu_read_lock();
1360         list_for_each_entry_rcu(c, &h->list, list) {
1361                 if (c->rssi_monitored == true)
1362                         ++count;
1363         }
1364         rcu_read_unlock();
1365
1366         return count;
1367 }
1368 #endif
1369
1370 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1371 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1372 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1373 bool hci_iso_setup_path(struct hci_conn *conn);
1374 int hci_le_create_cis(struct hci_conn *conn);
1375
1376 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1377                               u8 role);
1378 int hci_conn_del(struct hci_conn *conn);
1379 void hci_conn_hash_flush(struct hci_dev *hdev);
1380 void hci_conn_check_pending(struct hci_dev *hdev);
1381
1382 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1383 void hci_chan_del(struct hci_chan *chan);
1384 void hci_chan_list_flush(struct hci_conn *conn);
1385 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1386
1387 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1388                                      u8 dst_type, u8 sec_level,
1389                                      u16 conn_timeout,
1390                                      enum conn_reasons conn_reason);
1391 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1392                                 u8 dst_type, bool dst_resolved, u8 sec_level,
1393                                 u16 conn_timeout, u8 role);
1394 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1395                                  u8 sec_level, u8 auth_type,
1396                                  enum conn_reasons conn_reason);
1397 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1398                                  __u16 setting, struct bt_codec *codec);
1399 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1400                               __u8 dst_type, struct bt_iso_qos *qos);
1401 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1402                                  __u8 dst_type, struct bt_iso_qos *qos);
1403 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1404                                  __u8 dst_type, struct bt_iso_qos *qos,
1405                                  __u8 data_len, __u8 *data);
1406 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1407                        __u8 sid);
1408 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos,
1409                            __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1410 int hci_conn_check_link_mode(struct hci_conn *conn);
1411 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1412 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1413                       bool initiator);
1414 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1415
1416 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1417
1418 void hci_conn_failed(struct hci_conn *conn, u8 status);
1419
1420 /*
1421  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1422  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1423  * working or anything else. They just guarantee that the object is available
1424  * and can be dereferenced. So you can use its locks, local variables and any
1425  * other constant data.
1426  * Before accessing runtime data, you _must_ lock the object and then check that
1427  * it is still running. As soon as you release the locks, the connection might
1428  * get dropped, though.
1429  *
1430  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1431  * how long the underlying connection is held. So every channel that runs on the
1432  * hci_conn object calls this to prevent the connection from disappearing. As
1433  * long as you hold a device, you must also guarantee that you have a valid
1434  * reference to the device via hci_conn_get() (or the initial reference from
1435  * hci_conn_add()).
1436  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1437  * break because nobody cares for that. But this means, we cannot use
1438  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1439  */
1440
1441 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1442 {
1443         get_device(&conn->dev);
1444         return conn;
1445 }
1446
1447 static inline void hci_conn_put(struct hci_conn *conn)
1448 {
1449         put_device(&conn->dev);
1450 }
1451
1452 static inline void hci_conn_hold(struct hci_conn *conn)
1453 {
1454         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1455
1456         atomic_inc(&conn->refcnt);
1457         cancel_delayed_work(&conn->disc_work);
1458 }
1459
1460 static inline void hci_conn_drop(struct hci_conn *conn)
1461 {
1462         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1463
1464         if (atomic_dec_and_test(&conn->refcnt)) {
1465                 unsigned long timeo;
1466
1467                 switch (conn->type) {
1468                 case ACL_LINK:
1469                 case LE_LINK:
1470                         cancel_delayed_work(&conn->idle_work);
1471                         if (conn->state == BT_CONNECTED) {
1472                                 timeo = conn->disc_timeout;
1473                                 if (!conn->out)
1474                                         timeo *= 2;
1475                         } else {
1476                                 timeo = 0;
1477                         }
1478                         break;
1479
1480                 case AMP_LINK:
1481                         timeo = conn->disc_timeout;
1482                         break;
1483
1484                 default:
1485                         timeo = 0;
1486                         break;
1487                 }
1488
1489                 cancel_delayed_work(&conn->disc_work);
1490                 queue_delayed_work(conn->hdev->workqueue,
1491                                    &conn->disc_work, timeo);
1492         }
1493 }
1494
1495 /* ----- HCI Devices ----- */
1496 static inline void hci_dev_put(struct hci_dev *d)
1497 {
1498         BT_DBG("%s orig refcnt %d", d->name,
1499                kref_read(&d->dev.kobj.kref));
1500
1501         put_device(&d->dev);
1502 }
1503
1504 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1505 {
1506         BT_DBG("%s orig refcnt %d", d->name,
1507                kref_read(&d->dev.kobj.kref));
1508
1509         get_device(&d->dev);
1510         return d;
1511 }
1512
1513 #define hci_dev_lock(d)         mutex_lock(&d->lock)
1514 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
1515
1516 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1517 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1518
1519 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1520 {
1521         return dev_get_drvdata(&hdev->dev);
1522 }
1523
1524 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1525 {
1526         dev_set_drvdata(&hdev->dev, data);
1527 }
1528
1529 static inline void *hci_get_priv(struct hci_dev *hdev)
1530 {
1531         return (char *)hdev + sizeof(*hdev);
1532 }
1533
1534 struct hci_dev *hci_dev_get(int index);
1535 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1536
1537 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1538
1539 static inline struct hci_dev *hci_alloc_dev(void)
1540 {
1541         return hci_alloc_dev_priv(0);
1542 }
1543
1544 void hci_free_dev(struct hci_dev *hdev);
1545 int hci_register_dev(struct hci_dev *hdev);
1546 void hci_unregister_dev(struct hci_dev *hdev);
1547 void hci_release_dev(struct hci_dev *hdev);
1548 int hci_register_suspend_notifier(struct hci_dev *hdev);
1549 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1550 int hci_suspend_dev(struct hci_dev *hdev);
1551 int hci_resume_dev(struct hci_dev *hdev);
1552 int hci_reset_dev(struct hci_dev *hdev);
1553 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1554 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1555 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1556 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1557
1558 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1559 {
1560 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1561         hdev->msft_opcode = opcode;
1562 #endif
1563 }
1564
1565 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1566 {
1567 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1568         hdev->aosp_capable = true;
1569 #endif
1570 }
1571
1572 int hci_dev_open(__u16 dev);
1573 int hci_dev_close(__u16 dev);
1574 int hci_dev_do_close(struct hci_dev *hdev);
1575 int hci_dev_reset(__u16 dev);
1576 int hci_dev_reset_stat(__u16 dev);
1577 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1578 int hci_get_dev_list(void __user *arg);
1579 int hci_get_dev_info(void __user *arg);
1580 int hci_get_conn_list(void __user *arg);
1581 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1582 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1583 int hci_inquiry(void __user *arg);
1584
1585 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1586                                            bdaddr_t *bdaddr, u8 type);
1587 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1588                                     struct list_head *list, bdaddr_t *bdaddr,
1589                                     u8 type);
1590 struct bdaddr_list_with_flags *
1591 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1592                                   u8 type);
1593 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1594 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1595                                  u8 type, u8 *peer_irk, u8 *local_irk);
1596 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1597                                    u8 type, u32 flags);
1598 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1599 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1600                                  u8 type);
1601 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1602                                    u8 type);
1603 void hci_bdaddr_list_clear(struct list_head *list);
1604
1605 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1606                                                bdaddr_t *addr, u8 addr_type);
1607 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1608                                             bdaddr_t *addr, u8 addr_type);
1609 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1610 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1611
1612 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1613                                                   bdaddr_t *addr,
1614                                                   u8 addr_type);
1615
1616 void hci_uuids_clear(struct hci_dev *hdev);
1617
1618 void hci_link_keys_clear(struct hci_dev *hdev);
1619 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1620 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1621                                   bdaddr_t *bdaddr, u8 *val, u8 type,
1622                                   u8 pin_len, bool *persistent);
1623 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1624                             u8 addr_type, u8 type, u8 authenticated,
1625                             u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1626 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1627                              u8 addr_type, u8 role);
1628 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1629 void hci_smp_ltks_clear(struct hci_dev *hdev);
1630 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1631
1632 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1633 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1634                                      u8 addr_type);
1635 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1636                             u8 addr_type, u8 val[16], bdaddr_t *rpa);
1637 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1638 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1639 void hci_blocked_keys_clear(struct hci_dev *hdev);
1640 void hci_smp_irks_clear(struct hci_dev *hdev);
1641
1642 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1643
1644 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1645 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1646                                           bdaddr_t *bdaddr, u8 bdaddr_type);
1647 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1648                             u8 bdaddr_type, u8 *hash192, u8 *rand192,
1649                             u8 *hash256, u8 *rand256);
1650 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1651                                u8 bdaddr_type);
1652
1653 void hci_adv_instances_clear(struct hci_dev *hdev);
1654 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1655 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1656 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1657                                       u32 flags, u16 adv_data_len, u8 *adv_data,
1658                                       u16 scan_rsp_len, u8 *scan_rsp_data,
1659                                       u16 timeout, u16 duration, s8 tx_power,
1660                                       u32 min_interval, u32 max_interval,
1661                                       u8 mesh_handle);
1662 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1663                                       u32 flags, u8 data_len, u8 *data,
1664                                       u32 min_interval, u32 max_interval);
1665 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1666                          u16 adv_data_len, u8 *adv_data,
1667                          u16 scan_rsp_len, u8 *scan_rsp_data);
1668 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1669 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1670 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1671 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1672
1673 void hci_adv_monitors_clear(struct hci_dev *hdev);
1674 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1675 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1676 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1677 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1678 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1679 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1680
1681 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1682
1683 void hci_init_sysfs(struct hci_dev *hdev);
1684 void hci_conn_init_sysfs(struct hci_conn *conn);
1685 void hci_conn_add_sysfs(struct hci_conn *conn);
1686 void hci_conn_del_sysfs(struct hci_conn *conn);
1687
1688 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1689
1690 /* ----- LMP capabilities ----- */
1691 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
1692 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
1693 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
1694 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
1695 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
1696 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
1697 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
1698 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
1699 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
1700 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1701 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1702 #define lmp_esco_2m_capable(dev)   ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1703 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
1704 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1705 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1706 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
1707 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1708 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1709 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1710 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1711 #define lmp_edr_2m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_2M)
1712 #define lmp_edr_3m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_3M)
1713 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1714 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1715
1716 /* ----- Extended LMP capabilities ----- */
1717 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1718 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1719 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1720 #define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1721 #define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1722 #define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1723
1724 /* ----- Host capabilities ----- */
1725 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1726 #define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1727 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1728 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1729
1730 #define hdev_is_powered(dev)   (test_bit(HCI_UP, &(dev)->flags) && \
1731                                 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1732 #define bredr_sc_enabled(dev)  (lmp_sc_capable(dev) && \
1733                                 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1734 #define rpa_valid(dev)         (bacmp(&dev->rpa, BDADDR_ANY) && \
1735                                 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1736 #define adv_rpa_valid(adv)     (bacmp(&adv->random_addr, BDADDR_ANY) && \
1737                                 !adv->rpa_expired)
1738
1739 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1740                       ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1741
1742 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1743                       ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1744
1745 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1746                          ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1747
1748 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1749
1750 /* Use LL Privacy based address resolution if supported */
1751 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1752                              hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1753
1754 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1755                                    (hdev->commands[39] & 0x04))
1756
1757 /* Use enhanced synchronous connection if command is supported and its quirk
1758  * has not been set.
1759  */
1760 #define enhanced_sync_conn_capable(dev) \
1761         (((dev)->commands[29] & 0x08) && \
1762          !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1763
1764 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1765 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1766                            ((dev)->commands[37] & 0x40) && \
1767                            !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1768
1769 /* Use ext create connection if command is supported */
1770 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1771
1772 /* Extended advertising support */
1773 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1774
1775 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1776  *
1777  * C24: Mandatory if the LE Controller supports Connection State and either
1778  * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1779  */
1780 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1781                                          ext_adv_capable(dev))
1782
1783 /* Periodic advertising support */
1784 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1785
1786 /* CIS Master/Slave and BIS support */
1787 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1788 #define cis_capable(dev) \
1789         (cis_central_capable(dev) || cis_peripheral_capable(dev))
1790 #define cis_central_capable(dev) \
1791         ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1792 #define cis_peripheral_capable(dev) \
1793         ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1794 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1795
1796 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1797         (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1798
1799 /* ----- HCI protocols ----- */
1800 #define HCI_PROTO_DEFER             0x01
1801
1802 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1803                                         __u8 type, __u8 *flags)
1804 {
1805         switch (type) {
1806         case ACL_LINK:
1807                 return l2cap_connect_ind(hdev, bdaddr);
1808
1809         case SCO_LINK:
1810         case ESCO_LINK:
1811                 return sco_connect_ind(hdev, bdaddr, flags);
1812
1813         case ISO_LINK:
1814                 return iso_connect_ind(hdev, bdaddr, flags);
1815
1816         default:
1817                 BT_ERR("unknown link type %d", type);
1818                 return -EINVAL;
1819         }
1820 }
1821
1822 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1823 {
1824         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1825                 return HCI_ERROR_REMOTE_USER_TERM;
1826
1827         return l2cap_disconn_ind(conn);
1828 }
1829
1830 /* ----- HCI callbacks ----- */
1831 struct hci_cb {
1832         struct list_head list;
1833
1834         char *name;
1835
1836         void (*connect_cfm)     (struct hci_conn *conn, __u8 status);
1837         void (*disconn_cfm)     (struct hci_conn *conn, __u8 status);
1838         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
1839                                                                 __u8 encrypt);
1840         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
1841         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1842 };
1843
1844 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1845 {
1846         struct hci_cb *cb;
1847
1848         mutex_lock(&hci_cb_list_lock);
1849         list_for_each_entry(cb, &hci_cb_list, list) {
1850                 if (cb->connect_cfm)
1851                         cb->connect_cfm(conn, status);
1852         }
1853         mutex_unlock(&hci_cb_list_lock);
1854
1855         if (conn->connect_cfm_cb)
1856                 conn->connect_cfm_cb(conn, status);
1857 }
1858
1859 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1860 {
1861         struct hci_cb *cb;
1862
1863         mutex_lock(&hci_cb_list_lock);
1864         list_for_each_entry(cb, &hci_cb_list, list) {
1865                 if (cb->disconn_cfm)
1866                         cb->disconn_cfm(conn, reason);
1867         }
1868         mutex_unlock(&hci_cb_list_lock);
1869
1870         if (conn->disconn_cfm_cb)
1871                 conn->disconn_cfm_cb(conn, reason);
1872 }
1873
1874 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1875 {
1876         struct hci_cb *cb;
1877         __u8 encrypt;
1878
1879         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1880                 return;
1881
1882         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1883
1884         mutex_lock(&hci_cb_list_lock);
1885         list_for_each_entry(cb, &hci_cb_list, list) {
1886                 if (cb->security_cfm)
1887                         cb->security_cfm(conn, status, encrypt);
1888         }
1889         mutex_unlock(&hci_cb_list_lock);
1890
1891         if (conn->security_cfm_cb)
1892                 conn->security_cfm_cb(conn, status);
1893 }
1894
1895 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1896 {
1897         struct hci_cb *cb;
1898         __u8 encrypt;
1899
1900         if (conn->state == BT_CONFIG) {
1901                 if (!status)
1902                         conn->state = BT_CONNECTED;
1903
1904                 hci_connect_cfm(conn, status);
1905                 hci_conn_drop(conn);
1906                 return;
1907         }
1908
1909         if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1910                 encrypt = 0x00;
1911         else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1912                 encrypt = 0x02;
1913         else
1914                 encrypt = 0x01;
1915
1916         if (!status) {
1917                 if (conn->sec_level == BT_SECURITY_SDP)
1918                         conn->sec_level = BT_SECURITY_LOW;
1919
1920                 if (conn->pending_sec_level > conn->sec_level)
1921                         conn->sec_level = conn->pending_sec_level;
1922         }
1923
1924         mutex_lock(&hci_cb_list_lock);
1925         list_for_each_entry(cb, &hci_cb_list, list) {
1926                 if (cb->security_cfm)
1927                         cb->security_cfm(conn, status, encrypt);
1928         }
1929         mutex_unlock(&hci_cb_list_lock);
1930
1931         if (conn->security_cfm_cb)
1932                 conn->security_cfm_cb(conn, status);
1933 }
1934
1935 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1936 {
1937         struct hci_cb *cb;
1938
1939         mutex_lock(&hci_cb_list_lock);
1940         list_for_each_entry(cb, &hci_cb_list, list) {
1941                 if (cb->key_change_cfm)
1942                         cb->key_change_cfm(conn, status);
1943         }
1944         mutex_unlock(&hci_cb_list_lock);
1945 }
1946
1947 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1948                                                                 __u8 role)
1949 {
1950         struct hci_cb *cb;
1951
1952         mutex_lock(&hci_cb_list_lock);
1953         list_for_each_entry(cb, &hci_cb_list, list) {
1954                 if (cb->role_switch_cfm)
1955                         cb->role_switch_cfm(conn, status, role);
1956         }
1957         mutex_unlock(&hci_cb_list_lock);
1958 }
1959
1960 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1961 {
1962         if (addr_type != ADDR_LE_DEV_RANDOM)
1963                 return false;
1964
1965         if ((bdaddr->b[5] & 0xc0) == 0x40)
1966                return true;
1967
1968         return false;
1969 }
1970
1971 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1972 {
1973         if (addr_type == ADDR_LE_DEV_PUBLIC)
1974                 return true;
1975
1976         /* Check for Random Static address type */
1977         if ((addr->b[5] & 0xc0) == 0xc0)
1978                 return true;
1979
1980         return false;
1981 }
1982
1983 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1984                                           bdaddr_t *bdaddr, u8 addr_type)
1985 {
1986         if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1987                 return NULL;
1988
1989         return hci_find_irk_by_rpa(hdev, bdaddr);
1990 }
1991
1992 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1993                                         u16 to_multiplier)
1994 {
1995         u16 max_latency;
1996
1997         if (min > max || min < 6 || max > 3200)
1998                 return -EINVAL;
1999
2000         if (to_multiplier < 10 || to_multiplier > 3200)
2001                 return -EINVAL;
2002
2003         if (max >= to_multiplier * 8)
2004                 return -EINVAL;
2005
2006         max_latency = (to_multiplier * 4 / max) - 1;
2007         if (latency > 499 || latency > max_latency)
2008                 return -EINVAL;
2009
2010         return 0;
2011 }
2012
2013 int hci_register_cb(struct hci_cb *hcb);
2014 int hci_unregister_cb(struct hci_cb *hcb);
2015
2016 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2017                    const void *param);
2018
2019 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2020                  const void *param);
2021 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2022 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2023 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2024
2025 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2026 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2027
2028 u32 hci_conn_get_phy(struct hci_conn *conn);
2029
2030 /* ----- HCI Sockets ----- */
2031 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2032 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2033                          int flag, struct sock *skip_sk);
2034 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2035 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2036                                  void *data, u16 data_len, ktime_t tstamp,
2037                                  int flag, struct sock *skip_sk);
2038
2039 void hci_sock_dev_event(struct hci_dev *hdev, int event);
2040
2041 #define HCI_MGMT_VAR_LEN        BIT(0)
2042 #define HCI_MGMT_NO_HDEV        BIT(1)
2043 #define HCI_MGMT_UNTRUSTED      BIT(2)
2044 #define HCI_MGMT_UNCONFIGURED   BIT(3)
2045 #define HCI_MGMT_HDEV_OPTIONAL  BIT(4)
2046
2047 struct hci_mgmt_handler {
2048         int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2049                      u16 data_len);
2050         size_t data_len;
2051         unsigned long flags;
2052 };
2053
2054 struct hci_mgmt_chan {
2055         struct list_head list;
2056         unsigned short channel;
2057         size_t handler_count;
2058         const struct hci_mgmt_handler *handlers;
2059 #ifdef TIZEN_BT
2060         size_t tizen_handler_count;
2061         const struct hci_mgmt_handler *tizen_handlers;
2062 #endif
2063         void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2064 };
2065
2066 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2067 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2068
2069 /* Management interface */
2070 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
2071 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
2072                                          BIT(BDADDR_LE_RANDOM))
2073 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
2074                                          BIT(BDADDR_LE_PUBLIC) | \
2075                                          BIT(BDADDR_LE_RANDOM))
2076
2077 /* These LE scan and inquiry parameters were chosen according to LE General
2078  * Discovery Procedure specification.
2079  */
2080 #define DISCOV_LE_SCAN_WIN              0x12
2081 #define DISCOV_LE_SCAN_INT              0x12
2082 #define DISCOV_LE_TIMEOUT               10240   /* msec */
2083 #define DISCOV_INTERLEAVED_TIMEOUT      5120    /* msec */
2084 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
2085 #define DISCOV_BREDR_INQUIRY_LEN        0x08
2086 #define DISCOV_LE_RESTART_DELAY         msecs_to_jiffies(200)   /* msec */
2087 #define DISCOV_LE_FAST_ADV_INT_MIN      0x00A0  /* 100 msec */
2088 #define DISCOV_LE_FAST_ADV_INT_MAX      0x00F0  /* 150 msec */
2089 #define DISCOV_LE_PER_ADV_INT_MIN       0x00A0  /* 200 msec */
2090 #define DISCOV_LE_PER_ADV_INT_MAX       0x00A0  /* 200 msec */
2091 #define DISCOV_LE_ADV_MESH_MIN          0x00A0  /* 100 msec */
2092 #define DISCOV_LE_ADV_MESH_MAX          0x00A0  /* 100 msec */
2093 #define INTERVAL_TO_MS(x)               (((x) * 10) / 0x10)
2094
2095 #define NAME_RESOLVE_DURATION           msecs_to_jiffies(10240) /* 10.24 sec */
2096
2097 void mgmt_fill_version_info(void *ver);
2098 int mgmt_new_settings(struct hci_dev *hdev);
2099 void mgmt_index_added(struct hci_dev *hdev);
2100 void mgmt_index_removed(struct hci_dev *hdev);
2101 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2102 void mgmt_power_on(struct hci_dev *hdev, int err);
2103 void __mgmt_power_off(struct hci_dev *hdev);
2104 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2105                        bool persistent);
2106 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2107                            u8 *name, u8 name_len);
2108 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2109                               u8 link_type, u8 addr_type, u8 reason,
2110                               bool mgmt_connected);
2111 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2112                             u8 link_type, u8 addr_type, u8 status);
2113 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2114                          u8 addr_type, u8 status);
2115 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2116 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2117                                   u8 status);
2118 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2119                                       u8 status);
2120 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2121                               u8 link_type, u8 addr_type, u32 value,
2122                               u8 confirm_hint);
2123 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2124                                      u8 link_type, u8 addr_type, u8 status);
2125 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2126                                          u8 link_type, u8 addr_type, u8 status);
2127 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2128                               u8 link_type, u8 addr_type);
2129 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2130                                      u8 link_type, u8 addr_type, u8 status);
2131 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2132                                          u8 link_type, u8 addr_type, u8 status);
2133 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2134                              u8 link_type, u8 addr_type, u32 passkey,
2135                              u8 entered);
2136 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2137 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2138 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2139                                     u8 status);
2140 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2141 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2142 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2143 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2144                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2145                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2146                        u64 instant);
2147 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2148                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2149 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2150 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2151 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2152                    u8 addr_type);
2153 bool mgmt_powering_down(struct hci_dev *hdev);
2154 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2155 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2156 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2157                    bool persistent);
2158 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2159                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
2160                          u16 max_interval, u16 latency, u16 timeout);
2161 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2162 bool mgmt_get_connectable(struct hci_dev *hdev);
2163 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2164 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2165                             u8 instance);
2166 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2167                               u8 instance);
2168 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2169 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2170 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2171                                   bdaddr_t *bdaddr, u8 addr_type);
2172
2173 #ifdef TIZEN_BT
2174 void mgmt_rssi_enable_success(struct sock *sk, struct hci_dev *hdev,
2175                 void *data, struct hci_cc_rsp_enable_rssi *rp, int success);
2176 void mgmt_rssi_disable_success(struct sock *sk, struct hci_dev *hdev,
2177                 void *data, struct hci_cc_rsp_enable_rssi *rp, int success);
2178 int mgmt_set_rssi_threshold(struct sock *sk, struct hci_dev *hdev,
2179                 void *data, u16 len);
2180 void mgmt_rssi_alert_evt(struct hci_dev *hdev, struct sk_buff *skb);
2181 void mgmt_raw_rssi_response(struct hci_dev *hdev,
2182                 struct hci_cc_rp_get_raw_rssi *rp, int success);
2183 void mgmt_enable_rssi_cc(struct hci_dev *hdev, void *response, u8 status);
2184 int mgmt_device_name_update(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *name,
2185                 u8 name_len);
2186 #endif
2187
2188 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2189 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2190                       u16 to_multiplier);
2191 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2192                       __u8 ltk[16], __u8 key_size);
2193
2194 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2195                                u8 *bdaddr_type);
2196
2197 #define SCO_AIRMODE_MASK       0x0003
2198 #define SCO_AIRMODE_CVSD       0x0000
2199 #define SCO_AIRMODE_TRANSP     0x0003
2200
2201 #define LOCAL_CODEC_ACL_MASK    BIT(0)
2202 #define LOCAL_CODEC_SCO_MASK    BIT(1)
2203
2204 #define TRANSPORT_TYPE_MAX      0x04
2205
2206 #endif /* __HCI_CORE_H */