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