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 #ifdef TIZEN_BT
 567         struct discovery_state  le_discovery;
 568 #endif
 569
 570         struct hci_conn_hash    conn_hash;
 571
 572         struct list_head        mesh_pending;
 573         struct list_head        mgmt_pending;
 574         struct list_head        reject_list;
 575         struct list_head        accept_list;
 576         struct list_head        uuids;
 577         struct list_head        link_keys;
 578         struct list_head        long_term_keys;
 579         struct list_head        identity_resolving_keys;
 580         struct list_head        remote_oob_data;
 581         struct list_head        le_accept_list;
 582         struct list_head        le_resolv_list;
 583         struct list_head        le_conn_params;
 584         struct list_head        pend_le_conns;
 585         struct list_head        pend_le_reports;
 586         struct list_head        blocked_keys;
 587         struct list_head        local_codecs;
 588
 589         struct hci_dev_stats    stat;
 590
 591         atomic_t                promisc;
 592
 593         const char              *hw_info;
 594         const char              *fw_info;
 595         struct dentry           *debugfs;
 596
 597         struct device           dev;
 598
 599         struct rfkill           *rfkill;
 600
 601         DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
 602         hci_conn_flags_t        conn_flags;
 603
 604         __s8                    adv_tx_power;
 605         __u8                    adv_data[HCI_MAX_EXT_AD_LENGTH];
 606         __u8                    adv_data_len;
 607         __u8                    scan_rsp_data[HCI_MAX_EXT_AD_LENGTH];
 608         __u8                    scan_rsp_data_len;
 609         __u8                    per_adv_data[HCI_MAX_PER_AD_LENGTH];
 610         __u8                    per_adv_data_len;
 611
 612         struct list_head        adv_instances;
 613         unsigned int            adv_instance_cnt;
 614         __u8                    cur_adv_instance;
 615         __u16                   adv_instance_timeout;
 616         struct delayed_work     adv_instance_expire;
 617
 618         struct idr              adv_monitors_idr;
 619         unsigned int            adv_monitors_cnt;
 620
 621         __u8                    irk[16];
 622         __u32                   rpa_timeout;
 623         struct delayed_work     rpa_expired;
 624         bdaddr_t                rpa;
 625
 626         struct delayed_work     mesh_send_done;
 627
 628         enum {
 629                 INTERLEAVE_SCAN_NONE,
 630                 INTERLEAVE_SCAN_NO_FILTER,
 631                 INTERLEAVE_SCAN_ALLOWLIST
 632         } interleave_scan_state;
 633
 634         struct delayed_work     interleave_scan;
 635
 636         struct list_head        monitored_devices;
 637         bool                    advmon_pend_notify;
 638
 639 #if IS_ENABLED(CONFIG_BT_LEDS)
 640         struct led_trigger      *power_led;
 641 #endif
 642
 643 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
 644         __u16                   msft_opcode;
 645         void                    *msft_data;
 646         bool                    msft_curve_validity;
 647 #endif
 648
 649 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
 650         bool                    aosp_capable;
 651         bool                    aosp_quality_report;
 652 #endif
 653
 654 #ifdef TIZEN_BT
 655         __u8                    adv_filter_policy;
 656         __u8                    adv_type;
 657 #endif
 658
 659         int (*open)(struct hci_dev *hdev);
 660         int (*close)(struct hci_dev *hdev);
 661         int (*flush)(struct hci_dev *hdev);
 662         int (*setup)(struct hci_dev *hdev);
 663         int (*shutdown)(struct hci_dev *hdev);
 664         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 665         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 666         void (*hw_error)(struct hci_dev *hdev, u8 code);
 667         int (*post_init)(struct hci_dev *hdev);
 668         int (*set_diag)(struct hci_dev *hdev, bool enable);
 669         int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 670         void (*cmd_timeout)(struct hci_dev *hdev);
 671         bool (*wakeup)(struct hci_dev *hdev);
 672         int (*set_quality_report)(struct hci_dev *hdev, bool enable);
 673         int (*get_data_path_id)(struct hci_dev *hdev, __u8 *data_path);
 674         int (*get_codec_config_data)(struct hci_dev *hdev, __u8 type,
 675                                      struct bt_codec *codec, __u8 *vnd_len,
 676                                      __u8 **vnd_data);
 677 };
 678
 679 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 680
 681 enum conn_reasons {
 682         CONN_REASON_PAIR_DEVICE,
 683         CONN_REASON_L2CAP_CHAN,
 684         CONN_REASON_SCO_CONNECT,
 685         CONN_REASON_ISO_CONNECT,
 686 };
 687
 688 struct hci_conn {
 689         struct list_head list;
 690
 691         atomic_t        refcnt;
 692
 693         bdaddr_t        dst;
 694         __u8            dst_type;
 695         bdaddr_t        src;
 696         __u8            src_type;
 697         bdaddr_t        init_addr;
 698         __u8            init_addr_type;
 699         bdaddr_t        resp_addr;
 700         __u8            resp_addr_type;
 701         __u8            adv_instance;
 702         __u16           handle;
 703         __u16           sync_handle;
 704         __u16           state;
 705         __u8            mode;
 706         __u8            type;
 707         __u8            role;
 708         bool            out;
 709         __u8            attempt;
 710         __u8            dev_class[3];
 711         __u8            features[HCI_MAX_PAGES][8];
 712         __u16           pkt_type;
 713         __u16           link_policy;
 714         __u8            key_type;
 715         __u8            auth_type;
 716         __u8            sec_level;
 717         __u8            pending_sec_level;
 718         __u8            pin_length;
 719         __u8            enc_key_size;
 720         __u8            io_capability;
 721         __u32           passkey_notify;
 722         __u8            passkey_entered;
 723         __u16           disc_timeout;
 724         __u16           conn_timeout;
 725         __u16           setting;
 726         __u16           auth_payload_timeout;
 727         __u16           le_conn_min_interval;
 728         __u16           le_conn_max_interval;
 729         __u16           le_conn_interval;
 730         __u16           le_conn_latency;
 731         __u16           le_supv_timeout;
 732         __u8            le_adv_data[HCI_MAX_AD_LENGTH];
 733         __u8            le_adv_data_len;
 734         __u8            le_per_adv_data[HCI_MAX_PER_AD_LENGTH];
 735         __u8            le_per_adv_data_len;
 736         __u8            le_tx_phy;
 737         __u8            le_rx_phy;
 738         __s8            rssi;
 739         __s8            tx_power;
 740         __s8            max_tx_power;
 741         struct bt_iso_qos iso_qos;
 742         unsigned long   flags;
 743
 744         enum conn_reasons conn_reason;
 745
 746         __u32           clock;
 747         __u16           clock_accuracy;
 748
 749         unsigned long   conn_info_timestamp;
 750
 751         __u8            remote_cap;
 752         __u8            remote_auth;
 753         __u8            remote_id;
 754
 755         unsigned int    sent;
 756
 757         struct sk_buff_head data_q;
 758         struct list_head chan_list;
 759
 760         struct delayed_work disc_work;
 761         struct delayed_work auto_accept_work;
 762         struct delayed_work idle_work;
 763         struct delayed_work le_conn_timeout;
 764         struct work_struct  le_scan_cleanup;
 765
 766         struct device   dev;
 767         struct dentry   *debugfs;
 768
 769         struct hci_dev  *hdev;
 770         void            *l2cap_data;
 771         void            *sco_data;
 772         void            *iso_data;
 773         struct amp_mgr  *amp_mgr;
 774
 775 #ifdef TIZEN_BT
 776         bool            rssi_monitored;
 777 #endif
 778         struct hci_conn *link;
 779         struct bt_codec codec;
 780
 781         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 782         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 783         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 784
 785         void (*cleanup)(struct hci_conn *conn);
 786 };
 787
 788 struct hci_chan {
 789         struct list_head list;
 790         __u16 handle;
 791         struct hci_conn *conn;
 792         struct sk_buff_head data_q;
 793         unsigned int    sent;
 794         __u8            state;
 795         bool            amp;
 796 };
 797
 798 struct hci_conn_params {
 799         struct list_head list;
 800         struct list_head action;
 801
 802         bdaddr_t addr;
 803         u8 addr_type;
 804
 805         u16 conn_min_interval;
 806         u16 conn_max_interval;
 807         u16 conn_latency;
 808         u16 supervision_timeout;
 809
 810         enum {
 811                 HCI_AUTO_CONN_DISABLED,
 812                 HCI_AUTO_CONN_REPORT,
 813                 HCI_AUTO_CONN_DIRECT,
 814                 HCI_AUTO_CONN_ALWAYS,
 815                 HCI_AUTO_CONN_LINK_LOSS,
 816                 HCI_AUTO_CONN_EXPLICIT,
 817         } auto_connect;
 818
 819         struct hci_conn *conn;
 820         bool explicit_connect;
 821         hci_conn_flags_t flags;
 822         u8  privacy_mode;
 823 };
 824
 825 extern struct list_head hci_dev_list;
 826 extern struct list_head hci_cb_list;
 827 extern rwlock_t hci_dev_list_lock;
 828 extern struct mutex hci_cb_list_lock;
 829
 830 #define hci_dev_set_flag(hdev, nr)             set_bit((nr), (hdev)->dev_flags)
 831 #define hci_dev_clear_flag(hdev, nr)           clear_bit((nr), (hdev)->dev_flags)
 832 #define hci_dev_change_flag(hdev, nr)          change_bit((nr), (hdev)->dev_flags)
 833 #define hci_dev_test_flag(hdev, nr)            test_bit((nr), (hdev)->dev_flags)
 834 #define hci_dev_test_and_set_flag(hdev, nr)    test_and_set_bit((nr), (hdev)->dev_flags)
 835 #define hci_dev_test_and_clear_flag(hdev, nr)  test_and_clear_bit((nr), (hdev)->dev_flags)
 836 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
 837
 838 #define hci_dev_clear_volatile_flags(hdev)                      \
 839         do {                                                    \
 840                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);          \
 841                 hci_dev_clear_flag(hdev, HCI_LE_ADV);           \
 842                 hci_dev_clear_flag(hdev, HCI_LL_RPA_RESOLUTION);\
 843                 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);     \
 844                 hci_dev_clear_flag(hdev, HCI_QUALITY_REPORT);   \
 845         } while (0)
 846
 847 #define hci_dev_le_state_simultaneous(hdev) \
 848         (test_bit(HCI_QUIRK_VALID_LE_STATES, &hdev->quirks) && \
 849          (hdev->le_states[4] & 0x08) && /* Central */ \
 850          (hdev->le_states[4] & 0x40) && /* Peripheral */ \
 851          (hdev->le_states[3] & 0x10))   /* Simultaneous */
 852
 853 /* ----- HCI interface to upper protocols ----- */
 854 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 855 int l2cap_disconn_ind(struct hci_conn *hcon);
 856 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 857
 858 #if IS_ENABLED(CONFIG_BT_BREDR)
 859 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 860 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 861 #else
 862 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 863                                   __u8 *flags)
 864 {
 865         return 0;
 866 }
 867
 868 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
 869 {
 870 }
 871 #endif
 872
 873 #if IS_ENABLED(CONFIG_BT_LE)
 874 int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 875 void iso_recv(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 876 #else
 877 static inline int iso_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 878                                   __u8 *flags)
 879 {
 880         return 0;
 881 }
 882 static inline void iso_recv(struct hci_conn *hcon, struct sk_buff *skb,
 883                             u16 flags)
 884 {
 885 }
 886 #endif
 887
 888 /* ----- Inquiry cache ----- */
 889 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 890 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 891
 892 static inline void discovery_init(struct hci_dev *hdev)
 893 {
 894         hdev->discovery.state = DISCOVERY_STOPPED;
 895         INIT_LIST_HEAD(&hdev->discovery.all);
 896         INIT_LIST_HEAD(&hdev->discovery.unknown);
 897         INIT_LIST_HEAD(&hdev->discovery.resolve);
 898         hdev->discovery.report_invalid_rssi = true;
 899         hdev->discovery.rssi = HCI_RSSI_INVALID;
 900 }
 901
 902 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 903 {
 904         hdev->discovery.result_filtering = false;
 905         hdev->discovery.report_invalid_rssi = true;
 906         hdev->discovery.rssi = HCI_RSSI_INVALID;
 907         hdev->discovery.uuid_count = 0;
 908         kfree(hdev->discovery.uuids);
 909         hdev->discovery.uuids = NULL;
 910         hdev->discovery.scan_start = 0;
 911         hdev->discovery.scan_duration = 0;
 912 }
 913
 914 bool hci_discovery_active(struct hci_dev *hdev);
 915
 916 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 917
 918 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 919 {
 920         return list_empty(&hdev->discovery.all);
 921 }
 922
 923 static inline long inquiry_cache_age(struct hci_dev *hdev)
 924 {
 925         struct discovery_state *c = &hdev->discovery;
 926         return jiffies - c->timestamp;
 927 }
 928
 929 static inline long inquiry_entry_age(struct inquiry_entry *e)
 930 {
 931         return jiffies - e->timestamp;
 932 }
 933
 934 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 935                                                bdaddr_t *bdaddr);
 936 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 937                                                        bdaddr_t *bdaddr);
 938 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 939                                                        bdaddr_t *bdaddr,
 940                                                        int state);
 941 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 942                                       struct inquiry_entry *ie);
 943 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 944                              bool name_known);
 945 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 946
 947 /* ----- HCI Connections ----- */
 948 enum {
 949         HCI_CONN_AUTH_PEND,
 950         HCI_CONN_REAUTH_PEND,
 951         HCI_CONN_ENCRYPT_PEND,
 952         HCI_CONN_RSWITCH_PEND,
 953         HCI_CONN_MODE_CHANGE_PEND,
 954         HCI_CONN_SCO_SETUP_PEND,
 955         HCI_CONN_MGMT_CONNECTED,
 956         HCI_CONN_SSP_ENABLED,
 957         HCI_CONN_SC_ENABLED,
 958         HCI_CONN_AES_CCM,
 959         HCI_CONN_POWER_SAVE,
 960         HCI_CONN_FLUSH_KEY,
 961         HCI_CONN_ENCRYPT,
 962         HCI_CONN_AUTH,
 963         HCI_CONN_SECURE,
 964         HCI_CONN_FIPS,
 965         HCI_CONN_STK_ENCRYPT,
 966         HCI_CONN_AUTH_INITIATOR,
 967         HCI_CONN_DROP,
 968         HCI_CONN_CANCEL,
 969         HCI_CONN_PARAM_REMOVAL_PEND,
 970         HCI_CONN_NEW_LINK_KEY,
 971         HCI_CONN_SCANNING,
 972         HCI_CONN_AUTH_FAILURE,
 973         HCI_CONN_PER_ADV,
 974 };
 975
 976 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 977 {
 978         struct hci_dev *hdev = conn->hdev;
 979         return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
 980                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 981 }
 982
 983 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
 984 {
 985         struct hci_dev *hdev = conn->hdev;
 986         return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
 987                test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
 988 }
 989
 990 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 991 {
 992         struct hci_conn_hash *h = &hdev->conn_hash;
 993         list_add_rcu(&c->list, &h->list);
 994         switch (c->type) {
 995         case ACL_LINK:
 996                 h->acl_num++;
 997                 break;
 998         case AMP_LINK:
 999                 h->amp_num++;
1000                 break;
1001         case LE_LINK:
1002                 h->le_num++;
1003                 if (c->role == HCI_ROLE_SLAVE)
1004                         h->le_num_peripheral++;
1005                 break;
1006         case SCO_LINK:
1007         case ESCO_LINK:
1008                 h->sco_num++;
1009                 break;
1010         case ISO_LINK:
1011                 h->iso_num++;
1012                 break;
1013         }
1014 }
1015
1016 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
1017 {
1018         struct hci_conn_hash *h = &hdev->conn_hash;
1019
1020         list_del_rcu(&c->list);
1021         synchronize_rcu();
1022
1023         switch (c->type) {
1024         case ACL_LINK:
1025                 h->acl_num--;
1026                 break;
1027         case AMP_LINK:
1028                 h->amp_num--;
1029                 break;
1030         case LE_LINK:
1031                 h->le_num--;
1032                 if (c->role == HCI_ROLE_SLAVE)
1033                         h->le_num_peripheral--;
1034                 break;
1035         case SCO_LINK:
1036         case ESCO_LINK:
1037                 h->sco_num--;
1038                 break;
1039         case ISO_LINK:
1040                 h->iso_num--;
1041                 break;
1042         }
1043 }
1044
1045 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
1046 {
1047         struct hci_conn_hash *h = &hdev->conn_hash;
1048         switch (type) {
1049         case ACL_LINK:
1050                 return h->acl_num;
1051         case AMP_LINK:
1052                 return h->amp_num;
1053         case LE_LINK:
1054                 return h->le_num;
1055         case SCO_LINK:
1056         case ESCO_LINK:
1057                 return h->sco_num;
1058         case ISO_LINK:
1059                 return h->iso_num;
1060         default:
1061                 return 0;
1062         }
1063 }
1064
1065 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
1066 {
1067         struct hci_conn_hash *c = &hdev->conn_hash;
1068
1069         return c->acl_num + c->amp_num + c->sco_num + c->le_num + c->iso_num;
1070 }
1071
1072 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
1073 {
1074         struct hci_conn_hash *h = &hdev->conn_hash;
1075         struct hci_conn *c;
1076         __u8 type = INVALID_LINK;
1077
1078         rcu_read_lock();
1079
1080         list_for_each_entry_rcu(c, &h->list, list) {
1081                 if (c->handle == handle) {
1082                         type = c->type;
1083                         break;
1084                 }
1085         }
1086
1087         rcu_read_unlock();
1088
1089         return type;
1090 }
1091
1092 static inline struct hci_conn *hci_conn_hash_lookup_bis(struct hci_dev *hdev,
1093                                                         bdaddr_t *ba,
1094                                                         __u8 big, __u8 bis)
1095 {
1096         struct hci_conn_hash *h = &hdev->conn_hash;
1097         struct hci_conn  *c;
1098
1099         rcu_read_lock();
1100
1101         list_for_each_entry_rcu(c, &h->list, list) {
1102                 if (bacmp(&c->dst, ba) || c->type != ISO_LINK)
1103                         continue;
1104
1105                 if (c->iso_qos.big == big && c->iso_qos.bis == bis) {
1106                         rcu_read_unlock();
1107                         return c;
1108                 }
1109         }
1110         rcu_read_unlock();
1111
1112         return NULL;
1113 }
1114
1115 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
1116                                                                 __u16 handle)
1117 {
1118         struct hci_conn_hash *h = &hdev->conn_hash;
1119         struct hci_conn  *c;
1120
1121         rcu_read_lock();
1122
1123         list_for_each_entry_rcu(c, &h->list, list) {
1124                 if (c->handle == handle) {
1125                         rcu_read_unlock();
1126                         return c;
1127                 }
1128         }
1129         rcu_read_unlock();
1130
1131         return NULL;
1132 }
1133
1134 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
1135                                                         __u8 type, bdaddr_t *ba)
1136 {
1137         struct hci_conn_hash *h = &hdev->conn_hash;
1138         struct hci_conn  *c;
1139
1140         rcu_read_lock();
1141
1142         list_for_each_entry_rcu(c, &h->list, list) {
1143                 if (c->type == type && !bacmp(&c->dst, ba)) {
1144                         rcu_read_unlock();
1145                         return c;
1146                 }
1147         }
1148
1149         rcu_read_unlock();
1150
1151         return NULL;
1152 }
1153
1154 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
1155                                                        bdaddr_t *ba,
1156                                                        __u8 ba_type)
1157 {
1158         struct hci_conn_hash *h = &hdev->conn_hash;
1159         struct hci_conn  *c;
1160
1161         rcu_read_lock();
1162
1163         list_for_each_entry_rcu(c, &h->list, list) {
1164                 if (c->type != LE_LINK)
1165                        continue;
1166
1167                 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1168                         rcu_read_unlock();
1169                         return c;
1170                 }
1171         }
1172
1173         rcu_read_unlock();
1174
1175         return NULL;
1176 }
1177
1178 static inline struct hci_conn *hci_conn_hash_lookup_cis(struct hci_dev *hdev,
1179                                                         bdaddr_t *ba,
1180                                                         __u8 ba_type)
1181 {
1182         struct hci_conn_hash *h = &hdev->conn_hash;
1183         struct hci_conn  *c;
1184
1185         rcu_read_lock();
1186
1187         list_for_each_entry_rcu(c, &h->list, list) {
1188                 if (c->type != ISO_LINK)
1189                         continue;
1190
1191                 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
1192                         rcu_read_unlock();
1193                         return c;
1194                 }
1195         }
1196
1197         rcu_read_unlock();
1198
1199         return NULL;
1200 }
1201
1202 static inline struct hci_conn *hci_conn_hash_lookup_cig(struct hci_dev *hdev,
1203                                                         __u8 handle)
1204 {
1205         struct hci_conn_hash *h = &hdev->conn_hash;
1206         struct hci_conn  *c;
1207
1208         rcu_read_lock();
1209
1210         list_for_each_entry_rcu(c, &h->list, list) {
1211                 if (c->type != ISO_LINK)
1212                         continue;
1213
1214                 if (handle == c->iso_qos.cig) {
1215                         rcu_read_unlock();
1216                         return c;
1217                 }
1218         }
1219
1220         rcu_read_unlock();
1221
1222         return NULL;
1223 }
1224
1225 static inline struct hci_conn *hci_conn_hash_lookup_big(struct hci_dev *hdev,
1226                                                         __u8 handle)
1227 {
1228         struct hci_conn_hash *h = &hdev->conn_hash;
1229         struct hci_conn  *c;
1230
1231         rcu_read_lock();
1232
1233         list_for_each_entry_rcu(c, &h->list, list) {
1234                 if (bacmp(&c->dst, BDADDR_ANY) || c->type != ISO_LINK)
1235                         continue;
1236
1237                 if (handle == c->iso_qos.big) {
1238                         rcu_read_unlock();
1239                         return c;
1240                 }
1241         }
1242
1243         rcu_read_unlock();
1244
1245         return NULL;
1246 }
1247
1248 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
1249                                                         __u8 type, __u16 state)
1250 {
1251         struct hci_conn_hash *h = &hdev->conn_hash;
1252         struct hci_conn  *c;
1253
1254         rcu_read_lock();
1255
1256         list_for_each_entry_rcu(c, &h->list, list) {
1257                 if (c->type == type && c->state == state) {
1258                         rcu_read_unlock();
1259                         return c;
1260                 }
1261         }
1262
1263         rcu_read_unlock();
1264
1265         return NULL;
1266 }
1267
1268 typedef void (*hci_conn_func_t)(struct hci_conn *conn, void *data);
1269 static inline void hci_conn_hash_list_state(struct hci_dev *hdev,
1270                                             hci_conn_func_t func, __u8 type,
1271                                             __u16 state, void *data)
1272 {
1273         struct hci_conn_hash *h = &hdev->conn_hash;
1274         struct hci_conn  *c;
1275
1276         if (!func)
1277                 return;
1278
1279         rcu_read_lock();
1280
1281         list_for_each_entry_rcu(c, &h->list, list) {
1282                 if (c->type == type && c->state == state)
1283                         func(c, data);
1284         }
1285
1286         rcu_read_unlock();
1287 }
1288
1289 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
1290 {
1291         struct hci_conn_hash *h = &hdev->conn_hash;
1292         struct hci_conn  *c;
1293
1294         rcu_read_lock();
1295
1296         list_for_each_entry_rcu(c, &h->list, list) {
1297                 if (c->type == LE_LINK && c->state == BT_CONNECT &&
1298                     !test_bit(HCI_CONN_SCANNING, &c->flags)) {
1299                         rcu_read_unlock();
1300                         return c;
1301                 }
1302         }
1303
1304         rcu_read_unlock();
1305
1306         return NULL;
1307 }
1308
1309 #ifdef TIZEN_BT
1310 static inline bool hci_conn_rssi_state_set(struct hci_dev *hdev,
1311                                         __u8 type, bdaddr_t *ba, bool value)
1312 {
1313         struct hci_conn_hash *h = &hdev->conn_hash;
1314         struct hci_conn  *c;
1315         __u8 conn_type;
1316
1317         if (type == 0x01)
1318                 conn_type = LE_LINK;
1319         else
1320                 conn_type = ACL_LINK;
1321
1322         rcu_read_lock();
1323
1324         list_for_each_entry_rcu(c, &h->list, list) {
1325                 if (c->type == conn_type && !bacmp(&c->dst, ba)) {
1326                         c->rssi_monitored = value;
1327                         rcu_read_unlock();
1328                         return true;
1329                 }
1330         }
1331
1332         rcu_read_unlock();
1333         return false;
1334 }
1335
1336 static inline void hci_conn_rssi_unset_all(struct hci_dev *hdev,
1337                                         __u8 type)
1338 {
1339         struct hci_conn_hash *h = &hdev->conn_hash;
1340         struct hci_conn  *c;
1341         __u8 conn_type;
1342
1343         if (type == 0x01)
1344                 conn_type = LE_LINK;
1345         else
1346                 conn_type = ACL_LINK;
1347
1348         rcu_read_lock();
1349         list_for_each_entry_rcu(c, &h->list, list) {
1350                 if (c->type == conn_type)
1351                         c->rssi_monitored = false;
1352         }
1353         rcu_read_unlock();
1354 }
1355
1356 static inline int hci_conn_hash_lookup_rssi_count(struct hci_dev *hdev)
1357 {
1358         struct hci_conn_hash *h = &hdev->conn_hash;
1359         struct hci_conn  *c;
1360         int count = 0;
1361
1362         rcu_read_lock();
1363         list_for_each_entry_rcu(c, &h->list, list) {
1364                 if (c->rssi_monitored == true)
1365                         ++count;
1366         }
1367         rcu_read_unlock();
1368
1369         return count;
1370 }
1371
1372 bool hci_le_discovery_active(struct hci_dev *hdev);
1373 void hci_le_discovery_set_state(struct hci_dev *hdev, int state);
1374 #endif
1375
1376 int hci_disconnect(struct hci_conn *conn, __u8 reason);
1377 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
1378 void hci_sco_setup(struct hci_conn *conn, __u8 status);
1379 bool hci_iso_setup_path(struct hci_conn *conn);
1380 int hci_le_create_cis(struct hci_conn *conn);
1381
1382 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
1383                               u8 role);
1384 int hci_conn_del(struct hci_conn *conn);
1385 void hci_conn_hash_flush(struct hci_dev *hdev);
1386 void hci_conn_check_pending(struct hci_dev *hdev);
1387
1388 struct hci_chan *hci_chan_create(struct hci_conn *conn);
1389 void hci_chan_del(struct hci_chan *chan);
1390 void hci_chan_list_flush(struct hci_conn *conn);
1391 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
1392
1393 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
1394                                      u8 dst_type, u8 sec_level,
1395                                      u16 conn_timeout,
1396                                      enum conn_reasons conn_reason);
1397 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
1398                                 u8 dst_type, bool dst_resolved, u8 sec_level,
1399                                 u16 conn_timeout, u8 role);
1400 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
1401                                  u8 sec_level, u8 auth_type,
1402                                  enum conn_reasons conn_reason);
1403 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
1404                                  __u16 setting, struct bt_codec *codec);
1405 struct hci_conn *hci_bind_cis(struct hci_dev *hdev, bdaddr_t *dst,
1406                               __u8 dst_type, struct bt_iso_qos *qos);
1407 struct hci_conn *hci_connect_cis(struct hci_dev *hdev, bdaddr_t *dst,
1408                                  __u8 dst_type, struct bt_iso_qos *qos);
1409 struct hci_conn *hci_connect_bis(struct hci_dev *hdev, bdaddr_t *dst,
1410                                  __u8 dst_type, struct bt_iso_qos *qos,
1411                                  __u8 data_len, __u8 *data);
1412 int hci_pa_create_sync(struct hci_dev *hdev, bdaddr_t *dst, __u8 dst_type,
1413                        __u8 sid);
1414 int hci_le_big_create_sync(struct hci_dev *hdev, struct bt_iso_qos *qos,
1415                            __u16 sync_handle, __u8 num_bis, __u8 bis[]);
1416 int hci_conn_check_link_mode(struct hci_conn *conn);
1417 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
1418 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
1419                       bool initiator);
1420 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
1421
1422 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
1423
1424 void hci_conn_failed(struct hci_conn *conn, u8 status);
1425
1426 /*
1427  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
1428  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
1429  * working or anything else. They just guarantee that the object is available
1430  * and can be dereferenced. So you can use its locks, local variables and any
1431  * other constant data.
1432  * Before accessing runtime data, you _must_ lock the object and then check that
1433  * it is still running. As soon as you release the locks, the connection might
1434  * get dropped, though.
1435  *
1436  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
1437  * how long the underlying connection is held. So every channel that runs on the
1438  * hci_conn object calls this to prevent the connection from disappearing. As
1439  * long as you hold a device, you must also guarantee that you have a valid
1440  * reference to the device via hci_conn_get() (or the initial reference from
1441  * hci_conn_add()).
1442  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
1443  * break because nobody cares for that. But this means, we cannot use
1444  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
1445  */
1446
1447 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
1448 {
1449         get_device(&conn->dev);
1450         return conn;
1451 }
1452
1453 static inline void hci_conn_put(struct hci_conn *conn)
1454 {
1455         put_device(&conn->dev);
1456 }
1457
1458 static inline void hci_conn_hold(struct hci_conn *conn)
1459 {
1460         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1461
1462         atomic_inc(&conn->refcnt);
1463         cancel_delayed_work(&conn->disc_work);
1464 }
1465
1466 static inline void hci_conn_drop(struct hci_conn *conn)
1467 {
1468         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
1469
1470         if (atomic_dec_and_test(&conn->refcnt)) {
1471                 unsigned long timeo;
1472
1473                 switch (conn->type) {
1474                 case ACL_LINK:
1475                 case LE_LINK:
1476                         cancel_delayed_work(&conn->idle_work);
1477                         if (conn->state == BT_CONNECTED) {
1478                                 timeo = conn->disc_timeout;
1479                                 if (!conn->out)
1480                                         timeo *= 2;
1481                         } else {
1482                                 timeo = 0;
1483                         }
1484                         break;
1485
1486                 case AMP_LINK:
1487                         timeo = conn->disc_timeout;
1488                         break;
1489
1490                 default:
1491                         timeo = 0;
1492                         break;
1493                 }
1494
1495                 cancel_delayed_work(&conn->disc_work);
1496                 queue_delayed_work(conn->hdev->workqueue,
1497                                    &conn->disc_work, timeo);
1498         }
1499 }
1500
1501 /* ----- HCI Devices ----- */
1502 static inline void hci_dev_put(struct hci_dev *d)
1503 {
1504         BT_DBG("%s orig refcnt %d", d->name,
1505                kref_read(&d->dev.kobj.kref));
1506
1507         put_device(&d->dev);
1508 }
1509
1510 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1511 {
1512         BT_DBG("%s orig refcnt %d", d->name,
1513                kref_read(&d->dev.kobj.kref));
1514
1515         get_device(&d->dev);
1516         return d;
1517 }
1518
1519 #define hci_dev_lock(d)         mutex_lock(&d->lock)
1520 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
1521
1522 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1523 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1524
1525 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1526 {
1527         return dev_get_drvdata(&hdev->dev);
1528 }
1529
1530 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1531 {
1532         dev_set_drvdata(&hdev->dev, data);
1533 }
1534
1535 static inline void *hci_get_priv(struct hci_dev *hdev)
1536 {
1537         return (char *)hdev + sizeof(*hdev);
1538 }
1539
1540 struct hci_dev *hci_dev_get(int index);
1541 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1542
1543 struct hci_dev *hci_alloc_dev_priv(int sizeof_priv);
1544
1545 static inline struct hci_dev *hci_alloc_dev(void)
1546 {
1547         return hci_alloc_dev_priv(0);
1548 }
1549
1550 void hci_free_dev(struct hci_dev *hdev);
1551 int hci_register_dev(struct hci_dev *hdev);
1552 void hci_unregister_dev(struct hci_dev *hdev);
1553 void hci_release_dev(struct hci_dev *hdev);
1554 int hci_register_suspend_notifier(struct hci_dev *hdev);
1555 int hci_unregister_suspend_notifier(struct hci_dev *hdev);
1556 int hci_suspend_dev(struct hci_dev *hdev);
1557 int hci_resume_dev(struct hci_dev *hdev);
1558 int hci_reset_dev(struct hci_dev *hdev);
1559 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1560 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1561 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1562 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1563
1564 static inline void hci_set_msft_opcode(struct hci_dev *hdev, __u16 opcode)
1565 {
1566 #if IS_ENABLED(CONFIG_BT_MSFTEXT)
1567         hdev->msft_opcode = opcode;
1568 #endif
1569 }
1570
1571 static inline void hci_set_aosp_capable(struct hci_dev *hdev)
1572 {
1573 #if IS_ENABLED(CONFIG_BT_AOSPEXT)
1574         hdev->aosp_capable = true;
1575 #endif
1576 }
1577
1578 int hci_dev_open(__u16 dev);
1579 int hci_dev_close(__u16 dev);
1580 int hci_dev_do_close(struct hci_dev *hdev);
1581 int hci_dev_reset(__u16 dev);
1582 int hci_dev_reset_stat(__u16 dev);
1583 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1584 int hci_get_dev_list(void __user *arg);
1585 int hci_get_dev_info(void __user *arg);
1586 int hci_get_conn_list(void __user *arg);
1587 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1588 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1589 int hci_inquiry(void __user *arg);
1590
1591 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1592                                            bdaddr_t *bdaddr, u8 type);
1593 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1594                                     struct list_head *list, bdaddr_t *bdaddr,
1595                                     u8 type);
1596 struct bdaddr_list_with_flags *
1597 hci_bdaddr_list_lookup_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1598                                   u8 type);
1599 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1600 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1601                                  u8 type, u8 *peer_irk, u8 *local_irk);
1602 int hci_bdaddr_list_add_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1603                                    u8 type, u32 flags);
1604 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1605 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1606                                  u8 type);
1607 int hci_bdaddr_list_del_with_flags(struct list_head *list, bdaddr_t *bdaddr,
1608                                    u8 type);
1609 void hci_bdaddr_list_clear(struct list_head *list);
1610
1611 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1612                                                bdaddr_t *addr, u8 addr_type);
1613 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1614                                             bdaddr_t *addr, u8 addr_type);
1615 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1616 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1617
1618 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1619                                                   bdaddr_t *addr,
1620                                                   u8 addr_type);
1621
1622 void hci_uuids_clear(struct hci_dev *hdev);
1623
1624 void hci_link_keys_clear(struct hci_dev *hdev);
1625 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1626 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1627                                   bdaddr_t *bdaddr, u8 *val, u8 type,
1628                                   u8 pin_len, bool *persistent);
1629 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1630                             u8 addr_type, u8 type, u8 authenticated,
1631                             u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1632 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1633                              u8 addr_type, u8 role);
1634 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1635 void hci_smp_ltks_clear(struct hci_dev *hdev);
1636 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1637
1638 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1639 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1640                                      u8 addr_type);
1641 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1642                             u8 addr_type, u8 val[16], bdaddr_t *rpa);
1643 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1644 bool hci_is_blocked_key(struct hci_dev *hdev, u8 type, u8 val[16]);
1645 void hci_blocked_keys_clear(struct hci_dev *hdev);
1646 void hci_smp_irks_clear(struct hci_dev *hdev);
1647
1648 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1649
1650 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1651 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1652                                           bdaddr_t *bdaddr, u8 bdaddr_type);
1653 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1654                             u8 bdaddr_type, u8 *hash192, u8 *rand192,
1655                             u8 *hash256, u8 *rand256);
1656 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1657                                u8 bdaddr_type);
1658
1659 void hci_adv_instances_clear(struct hci_dev *hdev);
1660 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1661 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1662 struct adv_info *hci_add_adv_instance(struct hci_dev *hdev, u8 instance,
1663                                       u32 flags, u16 adv_data_len, u8 *adv_data,
1664                                       u16 scan_rsp_len, u8 *scan_rsp_data,
1665                                       u16 timeout, u16 duration, s8 tx_power,
1666                                       u32 min_interval, u32 max_interval,
1667                                       u8 mesh_handle);
1668 struct adv_info *hci_add_per_instance(struct hci_dev *hdev, u8 instance,
1669                                       u32 flags, u8 data_len, u8 *data,
1670                                       u32 min_interval, u32 max_interval);
1671 int hci_set_adv_instance_data(struct hci_dev *hdev, u8 instance,
1672                          u16 adv_data_len, u8 *adv_data,
1673                          u16 scan_rsp_len, u8 *scan_rsp_data);
1674 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1675 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1676 u32 hci_adv_instance_flags(struct hci_dev *hdev, u8 instance);
1677 bool hci_adv_instance_is_scannable(struct hci_dev *hdev, u8 instance);
1678
1679 void hci_adv_monitors_clear(struct hci_dev *hdev);
1680 void hci_free_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1681 int hci_add_adv_monitor(struct hci_dev *hdev, struct adv_monitor *monitor);
1682 int hci_remove_single_adv_monitor(struct hci_dev *hdev, u16 handle);
1683 int hci_remove_all_adv_monitor(struct hci_dev *hdev);
1684 bool hci_is_adv_monitoring(struct hci_dev *hdev);
1685 int hci_get_adv_monitor_offload_ext(struct hci_dev *hdev);
1686
1687 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1688
1689 void hci_init_sysfs(struct hci_dev *hdev);
1690 void hci_conn_init_sysfs(struct hci_conn *conn);
1691 void hci_conn_add_sysfs(struct hci_conn *conn);
1692 void hci_conn_del_sysfs(struct hci_conn *conn);
1693
1694 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1695
1696 /* ----- LMP capabilities ----- */
1697 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
1698 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
1699 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
1700 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
1701 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
1702 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
1703 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
1704 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
1705 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
1706 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1707 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1708 #define lmp_esco_2m_capable(dev)   ((dev)->features[0][5] & LMP_EDR_ESCO_2M)
1709 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
1710 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1711 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1712 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
1713 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1714 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1715 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1716 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1717 #define lmp_edr_2m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_2M)
1718 #define lmp_edr_3m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_3M)
1719 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1720 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1721
1722 /* ----- Extended LMP capabilities ----- */
1723 #define lmp_cpb_central_capable(dev) ((dev)->features[2][0] & LMP_CPB_CENTRAL)
1724 #define lmp_cpb_peripheral_capable(dev) ((dev)->features[2][0] & LMP_CPB_PERIPHERAL)
1725 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1726 #define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1727 #define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1728 #define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1729
1730 /* ----- Host capabilities ----- */
1731 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1732 #define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1733 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1734 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1735
1736 #define hdev_is_powered(dev)   (test_bit(HCI_UP, &(dev)->flags) && \
1737                                 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1738 #define bredr_sc_enabled(dev)  (lmp_sc_capable(dev) && \
1739                                 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1740 #define rpa_valid(dev)         (bacmp(&dev->rpa, BDADDR_ANY) && \
1741                                 !hci_dev_test_flag(dev, HCI_RPA_EXPIRED))
1742 #define adv_rpa_valid(adv)     (bacmp(&adv->random_addr, BDADDR_ANY) && \
1743                                 !adv->rpa_expired)
1744
1745 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1746                       ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1747
1748 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1749                       ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1750
1751 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1752                          ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1753
1754 #define ll_privacy_capable(dev) ((dev)->le_features[0] & HCI_LE_LL_PRIVACY)
1755
1756 /* Use LL Privacy based address resolution if supported */
1757 #define use_ll_privacy(dev) (ll_privacy_capable(dev) && \
1758                              hci_dev_test_flag(dev, HCI_ENABLE_LL_PRIVACY))
1759
1760 #define privacy_mode_capable(dev) (use_ll_privacy(dev) && \
1761                                    (hdev->commands[39] & 0x04))
1762
1763 /* Use enhanced synchronous connection if command is supported and its quirk
1764  * has not been set.
1765  */
1766 #define enhanced_sync_conn_capable(dev) \
1767         (((dev)->commands[29] & 0x08) && \
1768          !test_bit(HCI_QUIRK_BROKEN_ENHANCED_SETUP_SYNC_CONN, &(dev)->quirks))
1769
1770 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1771 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1772                            ((dev)->commands[37] & 0x40) && \
1773                            !test_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &(dev)->quirks))
1774
1775 /* Use ext create connection if command is supported */
1776 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1777
1778 /* Extended advertising support */
1779 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1780
1781 /* BLUETOOTH CORE SPECIFICATION Version 5.3 | Vol 4, Part E page 1789:
1782  *
1783  * C24: Mandatory if the LE Controller supports Connection State and either
1784  * LE Feature (LL Privacy) or LE Feature (Extended Advertising) is supported
1785  */
1786 #define use_enhanced_conn_complete(dev) (ll_privacy_capable(dev) || \
1787                                          ext_adv_capable(dev))
1788
1789 /* Periodic advertising support */
1790 #define per_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_PERIODIC_ADV))
1791
1792 /* CIS Master/Slave and BIS support */
1793 #define iso_capable(dev) (cis_capable(dev) || bis_capable(dev))
1794 #define cis_capable(dev) \
1795         (cis_central_capable(dev) || cis_peripheral_capable(dev))
1796 #define cis_central_capable(dev) \
1797         ((dev)->le_features[3] & HCI_LE_CIS_CENTRAL)
1798 #define cis_peripheral_capable(dev) \
1799         ((dev)->le_features[3] & HCI_LE_CIS_PERIPHERAL)
1800 #define bis_capable(dev) ((dev)->le_features[3] & HCI_LE_ISO_BROADCASTER)
1801
1802 #define mws_transport_config_capable(dev) (((dev)->commands[30] & 0x08) && \
1803         (!test_bit(HCI_QUIRK_BROKEN_MWS_TRANSPORT_CONFIG, &(dev)->quirks)))
1804
1805 /* ----- HCI protocols ----- */
1806 #define HCI_PROTO_DEFER             0x01
1807
1808 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1809                                         __u8 type, __u8 *flags)
1810 {
1811         switch (type) {
1812         case ACL_LINK:
1813                 return l2cap_connect_ind(hdev, bdaddr);
1814
1815         case SCO_LINK:
1816         case ESCO_LINK:
1817                 return sco_connect_ind(hdev, bdaddr, flags);
1818
1819         case ISO_LINK:
1820                 return iso_connect_ind(hdev, bdaddr, flags);
1821
1822         default:
1823                 BT_ERR("unknown link type %d", type);
1824                 return -EINVAL;
1825         }
1826 }
1827
1828 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1829 {
1830         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1831                 return HCI_ERROR_REMOTE_USER_TERM;
1832
1833         return l2cap_disconn_ind(conn);
1834 }
1835
1836 /* ----- HCI callbacks ----- */
1837 struct hci_cb {
1838         struct list_head list;
1839
1840         char *name;
1841
1842         void (*connect_cfm)     (struct hci_conn *conn, __u8 status);
1843         void (*disconn_cfm)     (struct hci_conn *conn, __u8 status);
1844         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
1845                                                                 __u8 encrypt);
1846         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
1847         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1848 };
1849
1850 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1851 {
1852         struct hci_cb *cb;
1853
1854         mutex_lock(&hci_cb_list_lock);
1855         list_for_each_entry(cb, &hci_cb_list, list) {
1856                 if (cb->connect_cfm)
1857                         cb->connect_cfm(conn, status);
1858         }
1859         mutex_unlock(&hci_cb_list_lock);
1860
1861         if (conn->connect_cfm_cb)
1862                 conn->connect_cfm_cb(conn, status);
1863 }
1864
1865 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1866 {
1867         struct hci_cb *cb;
1868
1869         mutex_lock(&hci_cb_list_lock);
1870         list_for_each_entry(cb, &hci_cb_list, list) {
1871                 if (cb->disconn_cfm)
1872                         cb->disconn_cfm(conn, reason);
1873         }
1874         mutex_unlock(&hci_cb_list_lock);
1875
1876         if (conn->disconn_cfm_cb)
1877                 conn->disconn_cfm_cb(conn, reason);
1878 }
1879
1880 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1881 {
1882         struct hci_cb *cb;
1883         __u8 encrypt;
1884
1885         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1886                 return;
1887
1888         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1889
1890         mutex_lock(&hci_cb_list_lock);
1891         list_for_each_entry(cb, &hci_cb_list, list) {
1892                 if (cb->security_cfm)
1893                         cb->security_cfm(conn, status, encrypt);
1894         }
1895         mutex_unlock(&hci_cb_list_lock);
1896
1897         if (conn->security_cfm_cb)
1898                 conn->security_cfm_cb(conn, status);
1899 }
1900
1901 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status)
1902 {
1903         struct hci_cb *cb;
1904         __u8 encrypt;
1905
1906         if (conn->state == BT_CONFIG) {
1907                 if (!status)
1908                         conn->state = BT_CONNECTED;
1909
1910                 hci_connect_cfm(conn, status);
1911                 hci_conn_drop(conn);
1912                 return;
1913         }
1914
1915         if (!test_bit(HCI_CONN_ENCRYPT, &conn->flags))
1916                 encrypt = 0x00;
1917         else if (test_bit(HCI_CONN_AES_CCM, &conn->flags))
1918                 encrypt = 0x02;
1919         else
1920                 encrypt = 0x01;
1921
1922         if (!status) {
1923                 if (conn->sec_level == BT_SECURITY_SDP)
1924                         conn->sec_level = BT_SECURITY_LOW;
1925
1926                 if (conn->pending_sec_level > conn->sec_level)
1927                         conn->sec_level = conn->pending_sec_level;
1928         }
1929
1930         mutex_lock(&hci_cb_list_lock);
1931         list_for_each_entry(cb, &hci_cb_list, list) {
1932                 if (cb->security_cfm)
1933                         cb->security_cfm(conn, status, encrypt);
1934         }
1935         mutex_unlock(&hci_cb_list_lock);
1936
1937         if (conn->security_cfm_cb)
1938                 conn->security_cfm_cb(conn, status);
1939 }
1940
1941 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1942 {
1943         struct hci_cb *cb;
1944
1945         mutex_lock(&hci_cb_list_lock);
1946         list_for_each_entry(cb, &hci_cb_list, list) {
1947                 if (cb->key_change_cfm)
1948                         cb->key_change_cfm(conn, status);
1949         }
1950         mutex_unlock(&hci_cb_list_lock);
1951 }
1952
1953 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1954                                                                 __u8 role)
1955 {
1956         struct hci_cb *cb;
1957
1958         mutex_lock(&hci_cb_list_lock);
1959         list_for_each_entry(cb, &hci_cb_list, list) {
1960                 if (cb->role_switch_cfm)
1961                         cb->role_switch_cfm(conn, status, role);
1962         }
1963         mutex_unlock(&hci_cb_list_lock);
1964 }
1965
1966 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1967 {
1968         if (addr_type != ADDR_LE_DEV_RANDOM)
1969                 return false;
1970
1971         if ((bdaddr->b[5] & 0xc0) == 0x40)
1972                return true;
1973
1974         return false;
1975 }
1976
1977 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1978 {
1979         if (addr_type == ADDR_LE_DEV_PUBLIC)
1980                 return true;
1981
1982         /* Check for Random Static address type */
1983         if ((addr->b[5] & 0xc0) == 0xc0)
1984                 return true;
1985
1986         return false;
1987 }
1988
1989 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1990                                           bdaddr_t *bdaddr, u8 addr_type)
1991 {
1992         if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1993                 return NULL;
1994
1995         return hci_find_irk_by_rpa(hdev, bdaddr);
1996 }
1997
1998 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1999                                         u16 to_multiplier)
2000 {
2001         u16 max_latency;
2002
2003         if (min > max || min < 6 || max > 3200)
2004                 return -EINVAL;
2005
2006         if (to_multiplier < 10 || to_multiplier > 3200)
2007                 return -EINVAL;
2008
2009         if (max >= to_multiplier * 8)
2010                 return -EINVAL;
2011
2012         max_latency = (to_multiplier * 4 / max) - 1;
2013         if (latency > 499 || latency > max_latency)
2014                 return -EINVAL;
2015
2016         return 0;
2017 }
2018
2019 int hci_register_cb(struct hci_cb *hcb);
2020 int hci_unregister_cb(struct hci_cb *hcb);
2021
2022 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
2023                    const void *param);
2024
2025 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
2026                  const void *param);
2027 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
2028 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
2029 void hci_send_iso(struct hci_conn *conn, struct sk_buff *skb);
2030
2031 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
2032 void *hci_recv_event_data(struct hci_dev *hdev, __u8 event);
2033
2034 u32 hci_conn_get_phy(struct hci_conn *conn);
2035
2036 /* ----- HCI Sockets ----- */
2037 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
2038 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
2039                          int flag, struct sock *skip_sk);
2040 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
2041 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
2042                                  void *data, u16 data_len, ktime_t tstamp,
2043                                  int flag, struct sock *skip_sk);
2044
2045 void hci_sock_dev_event(struct hci_dev *hdev, int event);
2046
2047 #define HCI_MGMT_VAR_LEN        BIT(0)
2048 #define HCI_MGMT_NO_HDEV        BIT(1)
2049 #define HCI_MGMT_UNTRUSTED      BIT(2)
2050 #define HCI_MGMT_UNCONFIGURED   BIT(3)
2051 #define HCI_MGMT_HDEV_OPTIONAL  BIT(4)
2052
2053 struct hci_mgmt_handler {
2054         int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
2055                      u16 data_len);
2056         size_t data_len;
2057         unsigned long flags;
2058 };
2059
2060 struct hci_mgmt_chan {
2061         struct list_head list;
2062         unsigned short channel;
2063         size_t handler_count;
2064         const struct hci_mgmt_handler *handlers;
2065 #ifdef TIZEN_BT
2066         size_t tizen_handler_count;
2067         const struct hci_mgmt_handler *tizen_handlers;
2068 #endif
2069         void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
2070 };
2071
2072 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
2073 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
2074
2075 /* Management interface */
2076 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
2077 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
2078                                          BIT(BDADDR_LE_RANDOM))
2079 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
2080                                          BIT(BDADDR_LE_PUBLIC) | \
2081                                          BIT(BDADDR_LE_RANDOM))
2082
2083 /* These LE scan and inquiry parameters were chosen according to LE General
2084  * Discovery Procedure specification.
2085  */
2086 #define DISCOV_LE_SCAN_WIN              0x12
2087 #define DISCOV_LE_SCAN_INT              0x12
2088 #define DISCOV_LE_TIMEOUT               10240   /* msec */
2089 #define DISCOV_INTERLEAVED_TIMEOUT      5120    /* msec */
2090 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
2091 #define DISCOV_BREDR_INQUIRY_LEN        0x08
2092 #define DISCOV_LE_RESTART_DELAY         msecs_to_jiffies(200)   /* msec */
2093 #define DISCOV_LE_FAST_ADV_INT_MIN      0x00A0  /* 100 msec */
2094 #define DISCOV_LE_FAST_ADV_INT_MAX      0x00F0  /* 150 msec */
2095 #define DISCOV_LE_PER_ADV_INT_MIN       0x00A0  /* 200 msec */
2096 #define DISCOV_LE_PER_ADV_INT_MAX       0x00A0  /* 200 msec */
2097 #define DISCOV_LE_ADV_MESH_MIN          0x00A0  /* 100 msec */
2098 #define DISCOV_LE_ADV_MESH_MAX          0x00A0  /* 100 msec */
2099 #define INTERVAL_TO_MS(x)               (((x) * 10) / 0x10)
2100
2101 #define NAME_RESOLVE_DURATION           msecs_to_jiffies(10240) /* 10.24 sec */
2102
2103 void mgmt_fill_version_info(void *ver);
2104 int mgmt_new_settings(struct hci_dev *hdev);
2105 void mgmt_index_added(struct hci_dev *hdev);
2106 void mgmt_index_removed(struct hci_dev *hdev);
2107 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
2108 void mgmt_power_on(struct hci_dev *hdev, int err);
2109 void __mgmt_power_off(struct hci_dev *hdev);
2110 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
2111                        bool persistent);
2112 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
2113                            u8 *name, u8 name_len);
2114 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
2115                               u8 link_type, u8 addr_type, u8 reason,
2116                               bool mgmt_connected);
2117 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2118                             u8 link_type, u8 addr_type, u8 status);
2119 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2120                          u8 addr_type, u8 status);
2121 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
2122 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2123                                   u8 status);
2124 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2125                                       u8 status);
2126 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2127                               u8 link_type, u8 addr_type, u32 value,
2128                               u8 confirm_hint);
2129 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2130                                      u8 link_type, u8 addr_type, u8 status);
2131 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2132                                          u8 link_type, u8 addr_type, u8 status);
2133 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
2134                               u8 link_type, u8 addr_type);
2135 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2136                                      u8 link_type, u8 addr_type, u8 status);
2137 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
2138                                          u8 link_type, u8 addr_type, u8 status);
2139 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
2140                              u8 link_type, u8 addr_type, u32 passkey,
2141                              u8 entered);
2142 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
2143 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
2144 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
2145                                     u8 status);
2146 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
2147 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
2148 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
2149 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2150                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
2151                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len,
2152                        u64 instant);
2153 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
2154                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
2155 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
2156 void mgmt_suspending(struct hci_dev *hdev, u8 state);
2157 void mgmt_resuming(struct hci_dev *hdev, u8 reason, bdaddr_t *bdaddr,
2158                    u8 addr_type);
2159 bool mgmt_powering_down(struct hci_dev *hdev);
2160 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
2161 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
2162 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
2163                    bool persistent);
2164 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
2165                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
2166                          u16 max_interval, u16 latency, u16 timeout);
2167 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
2168 bool mgmt_get_connectable(struct hci_dev *hdev);
2169 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
2170 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
2171                             u8 instance);
2172 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
2173                               u8 instance);
2174 void mgmt_adv_monitor_removed(struct hci_dev *hdev, u16 handle);
2175 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
2176 void mgmt_adv_monitor_device_lost(struct hci_dev *hdev, u16 handle,
2177                                   bdaddr_t *bdaddr, u8 addr_type);
2178
2179 #ifdef TIZEN_BT
2180 void mgmt_rssi_enable_success(struct sock *sk, struct hci_dev *hdev,
2181                 void *data, struct hci_cc_rsp_enable_rssi *rp, int success);
2182 void mgmt_rssi_disable_success(struct sock *sk, struct hci_dev *hdev,
2183                 void *data, struct hci_cc_rsp_enable_rssi *rp, int success);
2184 int mgmt_set_rssi_threshold(struct sock *sk, struct hci_dev *hdev,
2185                 void *data, u16 len);
2186 void mgmt_rssi_alert_evt(struct hci_dev *hdev, struct sk_buff *skb);
2187 void mgmt_raw_rssi_response(struct hci_dev *hdev,
2188                 struct hci_cc_rp_get_raw_rssi *rp, int success);
2189 void mgmt_enable_rssi_cc(struct hci_dev *hdev, void *response, u8 status);
2190 int mgmt_device_name_update(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *name,
2191                 u8 name_len);
2192 void mgmt_le_discovering(struct hci_dev *hdev, u8 discovering);
2193 int mgmt_le_conn_updated(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type,
2194                 u8 dst_type, u16 conn_interval, u16 conn_latency,
2195                 u16 supervision_timeout);
2196 int mgmt_le_conn_update_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
2197                 u8 link_type, u8 addr_type, u8 status);
2198 #endif
2199
2200 int hci_abort_conn(struct hci_conn *conn, u8 reason);
2201 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
2202                       u16 to_multiplier);
2203 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
2204                       __u8 ltk[16], __u8 key_size);
2205
2206 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
2207                                u8 *bdaddr_type);
2208
2209 #define SCO_AIRMODE_MASK       0x0003
2210 #define SCO_AIRMODE_CVSD       0x0000
2211 #define SCO_AIRMODE_TRANSP     0x0003
2212
2213 #define LOCAL_CODEC_ACL_MASK    BIT(0)
2214 #define LOCAL_CODEC_SCO_MASK    BIT(1)
2215
2216 #define TRANSPORT_TYPE_MAX      0x04
2217
2218 #endif /* __HCI_CORE_H */