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 <net/bluetooth/hci.h>
  29 #include <net/bluetooth/hci_sock.h>
  30
  31 /* HCI priority */
  32 #define HCI_PRIO_MAX    7
  33
  34 /* HCI Core structures */
  35 struct inquiry_data {
  36         bdaddr_t        bdaddr;
  37         __u8            pscan_rep_mode;
  38         __u8            pscan_period_mode;
  39         __u8            pscan_mode;
  40         __u8            dev_class[3];
  41         __le16          clock_offset;
  42         __s8            rssi;
  43         __u8            ssp_mode;
  44 };
  45
  46 struct inquiry_entry {
  47         struct list_head        all;            /* inq_cache.all */
  48         struct list_head        list;           /* unknown or resolve */
  49         enum {
  50                 NAME_NOT_KNOWN,
  51                 NAME_NEEDED,
  52                 NAME_PENDING,
  53                 NAME_KNOWN,
  54         } name_state;
  55         __u32                   timestamp;
  56         struct inquiry_data     data;
  57 };
  58
  59 struct discovery_state {
  60         int                     type;
  61         enum {
  62                 DISCOVERY_STOPPED,
  63                 DISCOVERY_STARTING,
  64                 DISCOVERY_FINDING,
  65                 DISCOVERY_RESOLVING,
  66                 DISCOVERY_STOPPING,
  67         } state;
  68         struct list_head        all;    /* All devices found during inquiry */
  69         struct list_head        unknown;        /* Name state not known */
  70         struct list_head        resolve;        /* Name needs to be resolved */
  71         __u32                   timestamp;
  72         bdaddr_t                last_adv_addr;
  73         u8                      last_adv_addr_type;
  74         s8                      last_adv_rssi;
  75         u32                     last_adv_flags;
  76         u8                      last_adv_data[HCI_MAX_AD_LENGTH];
  77         u8                      last_adv_data_len;
  78         bool                    report_invalid_rssi;
  79         bool                    result_filtering;
  80         s8                      rssi;
  81         u16                     uuid_count;
  82         u8                      (*uuids)[16];
  83         unsigned long           scan_start;
  84         unsigned long           scan_duration;
  85 };
  86
  87 struct hci_conn_hash {
  88         struct list_head list;
  89         unsigned int     acl_num;
  90         unsigned int     amp_num;
  91         unsigned int     sco_num;
  92         unsigned int     le_num;
  93         unsigned int     le_num_slave;
  94 };
  95
  96 struct bdaddr_list {
  97         struct list_head list;
  98         bdaddr_t bdaddr;
  99         u8 bdaddr_type;
 100 };
 101
 102 struct bt_uuid {
 103         struct list_head list;
 104         u8 uuid[16];
 105         u8 size;
 106         u8 svc_hint;
 107 };
 108
 109 struct smp_csrk {
 110         bdaddr_t bdaddr;
 111         u8 bdaddr_type;
 112         u8 type;
 113         u8 val[16];
 114 };
 115
 116 struct smp_ltk {
 117         struct list_head list;
 118         struct rcu_head rcu;
 119         bdaddr_t bdaddr;
 120         u8 bdaddr_type;
 121         u8 authenticated;
 122         u8 type;
 123         u8 enc_size;
 124         __le16 ediv;
 125         __le64 rand;
 126         u8 val[16];
 127 };
 128
 129 struct smp_irk {
 130         struct list_head list;
 131         struct rcu_head rcu;
 132         bdaddr_t rpa;
 133         bdaddr_t bdaddr;
 134         u8 addr_type;
 135         u8 val[16];
 136 };
 137
 138 struct link_key {
 139         struct list_head list;
 140         struct rcu_head rcu;
 141         bdaddr_t bdaddr;
 142         u8 type;
 143         u8 val[HCI_LINK_KEY_SIZE];
 144         u8 pin_len;
 145 };
 146
 147 struct oob_data {
 148         struct list_head list;
 149         bdaddr_t bdaddr;
 150         u8 bdaddr_type;
 151         u8 present;
 152         u8 hash192[16];
 153         u8 rand192[16];
 154         u8 hash256[16];
 155         u8 rand256[16];
 156 };
 157
 158 struct adv_info {
 159         struct list_head list;
 160         bool pending;
 161         __u8    instance;
 162         __u32   flags;
 163         __u16   timeout;
 164         __u16   remaining_time;
 165         __u16   duration;
 166         __u16   adv_data_len;
 167         __u8    adv_data[HCI_MAX_AD_LENGTH];
 168         __u16   scan_rsp_len;
 169         __u8    scan_rsp_data[HCI_MAX_AD_LENGTH];
 170 };
 171
 172 #define HCI_MAX_ADV_INSTANCES           5
 173 #define HCI_DEFAULT_ADV_DURATION        2
 174
 175 #define HCI_MAX_SHORT_NAME_LENGTH       10
 176
 177 /* Default LE RPA expiry time, 15 minutes */
 178 #define HCI_DEFAULT_RPA_TIMEOUT         (15 * 60)
 179
 180 /* Default min/max age of connection information (1s/3s) */
 181 #define DEFAULT_CONN_INFO_MIN_AGE       1000
 182 #define DEFAULT_CONN_INFO_MAX_AGE       3000
 183
 184 struct amp_assoc {
 185         __u16   len;
 186         __u16   offset;
 187         __u16   rem_len;
 188         __u16   len_so_far;
 189         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
 190 };
 191
 192 #define HCI_MAX_PAGES   3
 193
 194 struct hci_dev {
 195         struct list_head list;
 196         struct mutex    lock;
 197
 198         char            name[8];
 199         unsigned long   flags;
 200         __u16           id;
 201         __u8            bus;
 202         __u8            dev_type;
 203         bdaddr_t        bdaddr;
 204         bdaddr_t        setup_addr;
 205         bdaddr_t        public_addr;
 206         bdaddr_t        random_addr;
 207         bdaddr_t        static_addr;
 208         __u8            adv_addr_type;
 209         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 210         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 211         __u8            eir[HCI_MAX_EIR_LENGTH];
 212         __u8            dev_class[3];
 213         __u8            major_class;
 214         __u8            minor_class;
 215         __u8            max_page;
 216         __u8            features[HCI_MAX_PAGES][8];
 217         __u8            le_features[8];
 218         __u8            le_white_list_size;
 219         __u8            le_states[8];
 220         __u8            commands[64];
 221         __u8            hci_ver;
 222         __u16           hci_rev;
 223         __u8            lmp_ver;
 224         __u16           manufacturer;
 225         __u16           lmp_subver;
 226         __u16           voice_setting;
 227         __u8            num_iac;
 228         __u8            stored_max_keys;
 229         __u8            stored_num_keys;
 230         __u8            io_capability;
 231         __s8            inq_tx_power;
 232         __u16           page_scan_interval;
 233         __u16           page_scan_window;
 234         __u8            page_scan_type;
 235         __u8            le_adv_channel_map;
 236         __u16           le_adv_min_interval;
 237         __u16           le_adv_max_interval;
 238         __u8            le_scan_type;
 239         __u16           le_scan_interval;
 240         __u16           le_scan_window;
 241         __u16           le_conn_min_interval;
 242         __u16           le_conn_max_interval;
 243         __u16           le_conn_latency;
 244         __u16           le_supv_timeout;
 245         __u16           le_def_tx_len;
 246         __u16           le_def_tx_time;
 247         __u16           le_max_tx_len;
 248         __u16           le_max_tx_time;
 249         __u16           le_max_rx_len;
 250         __u16           le_max_rx_time;
 251         __u16           discov_interleaved_timeout;
 252         __u16           conn_info_min_age;
 253         __u16           conn_info_max_age;
 254         __u8            ssp_debug_mode;
 255         __u8            hw_error_code;
 256         __u32           clock;
 257
 258         __u16           devid_source;
 259         __u16           devid_vendor;
 260         __u16           devid_product;
 261         __u16           devid_version;
 262
 263         __u16           pkt_type;
 264         __u16           esco_type;
 265         __u16           link_policy;
 266         __u16           link_mode;
 267
 268         __u32           idle_timeout;
 269         __u16           sniff_min_interval;
 270         __u16           sniff_max_interval;
 271
 272         __u8            amp_status;
 273         __u32           amp_total_bw;
 274         __u32           amp_max_bw;
 275         __u32           amp_min_latency;
 276         __u32           amp_max_pdu;
 277         __u8            amp_type;
 278         __u16           amp_pal_cap;
 279         __u16           amp_assoc_size;
 280         __u32           amp_max_flush_to;
 281         __u32           amp_be_flush_to;
 282
 283         struct amp_assoc        loc_assoc;
 284
 285         __u8            flow_ctl_mode;
 286
 287         unsigned int    auto_accept_delay;
 288
 289         unsigned long   quirks;
 290
 291         atomic_t        cmd_cnt;
 292         unsigned int    acl_cnt;
 293         unsigned int    sco_cnt;
 294         unsigned int    le_cnt;
 295
 296         unsigned int    acl_mtu;
 297         unsigned int    sco_mtu;
 298         unsigned int    le_mtu;
 299         unsigned int    acl_pkts;
 300         unsigned int    sco_pkts;
 301         unsigned int    le_pkts;
 302
 303         __u16           block_len;
 304         __u16           block_mtu;
 305         __u16           num_blocks;
 306         __u16           block_cnt;
 307
 308         unsigned long   acl_last_tx;
 309         unsigned long   sco_last_tx;
 310         unsigned long   le_last_tx;
 311
 312         struct workqueue_struct *workqueue;
 313         struct workqueue_struct *req_workqueue;
 314
 315         struct work_struct      power_on;
 316         struct delayed_work     power_off;
 317         struct work_struct      error_reset;
 318
 319         __u16                   discov_timeout;
 320         struct delayed_work     discov_off;
 321
 322         struct delayed_work     service_cache;
 323
 324         struct delayed_work     cmd_timer;
 325
 326         struct work_struct      rx_work;
 327         struct work_struct      cmd_work;
 328         struct work_struct      tx_work;
 329
 330         struct sk_buff_head     rx_q;
 331         struct sk_buff_head     raw_q;
 332         struct sk_buff_head     cmd_q;
 333
 334         struct sk_buff          *sent_cmd;
 335
 336         struct mutex            req_lock;
 337         wait_queue_head_t       req_wait_q;
 338         __u32                   req_status;
 339         __u32                   req_result;
 340         struct sk_buff          *req_skb;
 341
 342         void                    *smp_data;
 343         void                    *smp_bredr_data;
 344
 345         struct discovery_state  discovery;
 346         struct hci_conn_hash    conn_hash;
 347
 348         struct list_head        mgmt_pending;
 349         struct list_head        blacklist;
 350         struct list_head        whitelist;
 351         struct list_head        uuids;
 352         struct list_head        link_keys;
 353         struct list_head        long_term_keys;
 354         struct list_head        identity_resolving_keys;
 355         struct list_head        remote_oob_data;
 356         struct list_head        le_white_list;
 357         struct list_head        le_conn_params;
 358         struct list_head        pend_le_conns;
 359         struct list_head        pend_le_reports;
 360
 361         struct hci_dev_stats    stat;
 362
 363         atomic_t                promisc;
 364
 365         struct dentry           *debugfs;
 366
 367         struct device           dev;
 368
 369         struct rfkill           *rfkill;
 370
 371         DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
 372
 373         struct delayed_work     le_scan_disable;
 374         struct delayed_work     le_scan_restart;
 375
 376         __s8                    adv_tx_power;
 377         __u8                    adv_data[HCI_MAX_AD_LENGTH];
 378         __u8                    adv_data_len;
 379         __u8                    scan_rsp_data[HCI_MAX_AD_LENGTH];
 380         __u8                    scan_rsp_data_len;
 381
 382         struct list_head        adv_instances;
 383         unsigned int            adv_instance_cnt;
 384         __u8                    cur_adv_instance;
 385         __u16                   adv_instance_timeout;
 386         struct delayed_work     adv_instance_expire;
 387
 388         __u8                    irk[16];
 389         __u32                   rpa_timeout;
 390         struct delayed_work     rpa_expired;
 391         bdaddr_t                rpa;
 392
 393         int (*open)(struct hci_dev *hdev);
 394         int (*close)(struct hci_dev *hdev);
 395         int (*flush)(struct hci_dev *hdev);
 396         int (*setup)(struct hci_dev *hdev);
 397         int (*shutdown)(struct hci_dev *hdev);
 398         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 399         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 400         void (*hw_error)(struct hci_dev *hdev, u8 code);
 401         int (*post_init)(struct hci_dev *hdev);
 402         int (*set_diag)(struct hci_dev *hdev, bool enable);
 403         int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 404 };
 405
 406 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 407
 408 struct hci_conn {
 409         struct list_head list;
 410
 411         atomic_t        refcnt;
 412
 413         bdaddr_t        dst;
 414         __u8            dst_type;
 415         bdaddr_t        src;
 416         __u8            src_type;
 417         bdaddr_t        init_addr;
 418         __u8            init_addr_type;
 419         bdaddr_t        resp_addr;
 420         __u8            resp_addr_type;
 421         __u16           handle;
 422         __u16           state;
 423         __u8            mode;
 424         __u8            type;
 425         __u8            role;
 426         bool            out;
 427         __u8            attempt;
 428         __u8            dev_class[3];
 429         __u8            features[HCI_MAX_PAGES][8];
 430         __u16           pkt_type;
 431         __u16           link_policy;
 432         __u8            key_type;
 433         __u8            auth_type;
 434         __u8            sec_level;
 435         __u8            pending_sec_level;
 436         __u8            pin_length;
 437         __u8            enc_key_size;
 438         __u8            io_capability;
 439         __u32           passkey_notify;
 440         __u8            passkey_entered;
 441         __u16           disc_timeout;
 442         __u16           conn_timeout;
 443         __u16           setting;
 444         __u16           le_conn_min_interval;
 445         __u16           le_conn_max_interval;
 446         __u16           le_conn_interval;
 447         __u16           le_conn_latency;
 448         __u16           le_supv_timeout;
 449         __u8            le_adv_data[HCI_MAX_AD_LENGTH];
 450         __u8            le_adv_data_len;
 451         __s8            rssi;
 452         __s8            tx_power;
 453         __s8            max_tx_power;
 454         unsigned long   flags;
 455
 456         __u32           clock;
 457         __u16           clock_accuracy;
 458
 459         unsigned long   conn_info_timestamp;
 460
 461         __u8            remote_cap;
 462         __u8            remote_auth;
 463         __u8            remote_id;
 464
 465         unsigned int    sent;
 466
 467         struct sk_buff_head data_q;
 468         struct list_head chan_list;
 469
 470         struct delayed_work disc_work;
 471         struct delayed_work auto_accept_work;
 472         struct delayed_work idle_work;
 473         struct delayed_work le_conn_timeout;
 474         struct work_struct  le_scan_cleanup;
 475
 476         struct device   dev;
 477         struct dentry   *debugfs;
 478
 479         struct hci_dev  *hdev;
 480         void            *l2cap_data;
 481         void            *sco_data;
 482         struct amp_mgr  *amp_mgr;
 483
 484         struct hci_conn *link;
 485
 486         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 487         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 488         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 489 };
 490
 491 struct hci_chan {
 492         struct list_head list;
 493         __u16 handle;
 494         struct hci_conn *conn;
 495         struct sk_buff_head data_q;
 496         unsigned int    sent;
 497         __u8            state;
 498 };
 499
 500 struct hci_conn_params {
 501         struct list_head list;
 502         struct list_head action;
 503
 504         bdaddr_t addr;
 505         u8 addr_type;
 506
 507         u16 conn_min_interval;
 508         u16 conn_max_interval;
 509         u16 conn_latency;
 510         u16 supervision_timeout;
 511
 512         enum {
 513                 HCI_AUTO_CONN_DISABLED,
 514                 HCI_AUTO_CONN_REPORT,
 515                 HCI_AUTO_CONN_DIRECT,
 516                 HCI_AUTO_CONN_ALWAYS,
 517                 HCI_AUTO_CONN_LINK_LOSS,
 518                 HCI_AUTO_CONN_EXPLICIT,
 519         } auto_connect;
 520
 521         struct hci_conn *conn;
 522         bool explicit_connect;
 523 };
 524
 525 extern struct list_head hci_dev_list;
 526 extern struct list_head hci_cb_list;
 527 extern rwlock_t hci_dev_list_lock;
 528 extern struct mutex hci_cb_list_lock;
 529
 530 #define hci_dev_set_flag(hdev, nr)             set_bit((nr), (hdev)->dev_flags)
 531 #define hci_dev_clear_flag(hdev, nr)           clear_bit((nr), (hdev)->dev_flags)
 532 #define hci_dev_change_flag(hdev, nr)          change_bit((nr), (hdev)->dev_flags)
 533 #define hci_dev_test_flag(hdev, nr)            test_bit((nr), (hdev)->dev_flags)
 534 #define hci_dev_test_and_set_flag(hdev, nr)    test_and_set_bit((nr), (hdev)->dev_flags)
 535 #define hci_dev_test_and_clear_flag(hdev, nr)  test_and_clear_bit((nr), (hdev)->dev_flags)
 536 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
 537
 538 #define hci_dev_clear_volatile_flags(hdev)                      \
 539         do {                                                    \
 540                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);          \
 541                 hci_dev_clear_flag(hdev, HCI_LE_ADV);           \
 542                 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);     \
 543         } while (0)
 544
 545 /* ----- HCI interface to upper protocols ----- */
 546 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 547 int l2cap_disconn_ind(struct hci_conn *hcon);
 548 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 549
 550 #if IS_ENABLED(CONFIG_BT_BREDR)
 551 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 552 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 553 #else
 554 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 555                                   __u8 *flags)
 556 {
 557         return 0;
 558 }
 559
 560 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
 561 {
 562 }
 563 #endif
 564
 565 /* ----- Inquiry cache ----- */
 566 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 567 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 568
 569 static inline void discovery_init(struct hci_dev *hdev)
 570 {
 571         hdev->discovery.state = DISCOVERY_STOPPED;
 572         INIT_LIST_HEAD(&hdev->discovery.all);
 573         INIT_LIST_HEAD(&hdev->discovery.unknown);
 574         INIT_LIST_HEAD(&hdev->discovery.resolve);
 575         hdev->discovery.report_invalid_rssi = true;
 576         hdev->discovery.rssi = HCI_RSSI_INVALID;
 577 }
 578
 579 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 580 {
 581         hdev->discovery.result_filtering = false;
 582         hdev->discovery.report_invalid_rssi = true;
 583         hdev->discovery.rssi = HCI_RSSI_INVALID;
 584         hdev->discovery.uuid_count = 0;
 585         kfree(hdev->discovery.uuids);
 586         hdev->discovery.uuids = NULL;
 587         hdev->discovery.scan_start = 0;
 588         hdev->discovery.scan_duration = 0;
 589 }
 590
 591 bool hci_discovery_active(struct hci_dev *hdev);
 592
 593 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 594
 595 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 596 {
 597         return list_empty(&hdev->discovery.all);
 598 }
 599
 600 static inline long inquiry_cache_age(struct hci_dev *hdev)
 601 {
 602         struct discovery_state *c = &hdev->discovery;
 603         return jiffies - c->timestamp;
 604 }
 605
 606 static inline long inquiry_entry_age(struct inquiry_entry *e)
 607 {
 608         return jiffies - e->timestamp;
 609 }
 610
 611 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 612                                                bdaddr_t *bdaddr);
 613 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 614                                                        bdaddr_t *bdaddr);
 615 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 616                                                        bdaddr_t *bdaddr,
 617                                                        int state);
 618 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 619                                       struct inquiry_entry *ie);
 620 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 621                              bool name_known);
 622 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 623
 624 /* ----- HCI Connections ----- */
 625 enum {
 626         HCI_CONN_AUTH_PEND,
 627         HCI_CONN_REAUTH_PEND,
 628         HCI_CONN_ENCRYPT_PEND,
 629         HCI_CONN_RSWITCH_PEND,
 630         HCI_CONN_MODE_CHANGE_PEND,
 631         HCI_CONN_SCO_SETUP_PEND,
 632         HCI_CONN_MGMT_CONNECTED,
 633         HCI_CONN_SSP_ENABLED,
 634         HCI_CONN_SC_ENABLED,
 635         HCI_CONN_AES_CCM,
 636         HCI_CONN_POWER_SAVE,
 637         HCI_CONN_FLUSH_KEY,
 638         HCI_CONN_ENCRYPT,
 639         HCI_CONN_AUTH,
 640         HCI_CONN_SECURE,
 641         HCI_CONN_FIPS,
 642         HCI_CONN_STK_ENCRYPT,
 643         HCI_CONN_AUTH_INITIATOR,
 644         HCI_CONN_DROP,
 645         HCI_CONN_PARAM_REMOVAL_PEND,
 646         HCI_CONN_NEW_LINK_KEY,
 647         HCI_CONN_SCANNING,
 648 };
 649
 650 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 651 {
 652         struct hci_dev *hdev = conn->hdev;
 653         return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
 654                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 655 }
 656
 657 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
 658 {
 659         struct hci_dev *hdev = conn->hdev;
 660         return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
 661                test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
 662 }
 663
 664 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 665 {
 666         struct hci_conn_hash *h = &hdev->conn_hash;
 667         list_add_rcu(&c->list, &h->list);
 668         switch (c->type) {
 669         case ACL_LINK:
 670                 h->acl_num++;
 671                 break;
 672         case AMP_LINK:
 673                 h->amp_num++;
 674                 break;
 675         case LE_LINK:
 676                 h->le_num++;
 677                 if (c->role == HCI_ROLE_SLAVE)
 678                         h->le_num_slave++;
 679                 break;
 680         case SCO_LINK:
 681         case ESCO_LINK:
 682                 h->sco_num++;
 683                 break;
 684         }
 685 }
 686
 687 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 688 {
 689         struct hci_conn_hash *h = &hdev->conn_hash;
 690
 691         list_del_rcu(&c->list);
 692         synchronize_rcu();
 693
 694         switch (c->type) {
 695         case ACL_LINK:
 696                 h->acl_num--;
 697                 break;
 698         case AMP_LINK:
 699                 h->amp_num--;
 700                 break;
 701         case LE_LINK:
 702                 h->le_num--;
 703                 if (c->role == HCI_ROLE_SLAVE)
 704                         h->le_num_slave--;
 705                 break;
 706         case SCO_LINK:
 707         case ESCO_LINK:
 708                 h->sco_num--;
 709                 break;
 710         }
 711 }
 712
 713 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 714 {
 715         struct hci_conn_hash *h = &hdev->conn_hash;
 716         switch (type) {
 717         case ACL_LINK:
 718                 return h->acl_num;
 719         case AMP_LINK:
 720                 return h->amp_num;
 721         case LE_LINK:
 722                 return h->le_num;
 723         case SCO_LINK:
 724         case ESCO_LINK:
 725                 return h->sco_num;
 726         default:
 727                 return 0;
 728         }
 729 }
 730
 731 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
 732 {
 733         struct hci_conn_hash *c = &hdev->conn_hash;
 734
 735         return c->acl_num + c->amp_num + c->sco_num + c->le_num;
 736 }
 737
 738 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
 739 {
 740         struct hci_conn_hash *h = &hdev->conn_hash;
 741         struct hci_conn *c;
 742         __u8 type = INVALID_LINK;
 743
 744         rcu_read_lock();
 745
 746         list_for_each_entry_rcu(c, &h->list, list) {
 747                 if (c->handle == handle) {
 748                         type = c->type;
 749                         break;
 750                 }
 751         }
 752
 753         rcu_read_unlock();
 754
 755         return type;
 756 }
 757
 758 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 759                                                                 __u16 handle)
 760 {
 761         struct hci_conn_hash *h = &hdev->conn_hash;
 762         struct hci_conn  *c;
 763
 764         rcu_read_lock();
 765
 766         list_for_each_entry_rcu(c, &h->list, list) {
 767                 if (c->handle == handle) {
 768                         rcu_read_unlock();
 769                         return c;
 770                 }
 771         }
 772         rcu_read_unlock();
 773
 774         return NULL;
 775 }
 776
 777 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 778                                                         __u8 type, bdaddr_t *ba)
 779 {
 780         struct hci_conn_hash *h = &hdev->conn_hash;
 781         struct hci_conn  *c;
 782
 783         rcu_read_lock();
 784
 785         list_for_each_entry_rcu(c, &h->list, list) {
 786                 if (c->type == type && !bacmp(&c->dst, ba)) {
 787                         rcu_read_unlock();
 788                         return c;
 789                 }
 790         }
 791
 792         rcu_read_unlock();
 793
 794         return NULL;
 795 }
 796
 797 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
 798                                                        bdaddr_t *ba,
 799                                                        __u8 ba_type)
 800 {
 801         struct hci_conn_hash *h = &hdev->conn_hash;
 802         struct hci_conn  *c;
 803
 804         rcu_read_lock();
 805
 806         list_for_each_entry_rcu(c, &h->list, list) {
 807                 if (c->type != LE_LINK)
 808                        continue;
 809
 810                 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
 811                         rcu_read_unlock();
 812                         return c;
 813                 }
 814         }
 815
 816         rcu_read_unlock();
 817
 818         return NULL;
 819 }
 820
 821 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 822                                                         __u8 type, __u16 state)
 823 {
 824         struct hci_conn_hash *h = &hdev->conn_hash;
 825         struct hci_conn  *c;
 826
 827         rcu_read_lock();
 828
 829         list_for_each_entry_rcu(c, &h->list, list) {
 830                 if (c->type == type && c->state == state) {
 831                         rcu_read_unlock();
 832                         return c;
 833                 }
 834         }
 835
 836         rcu_read_unlock();
 837
 838         return NULL;
 839 }
 840
 841 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
 842 {
 843         struct hci_conn_hash *h = &hdev->conn_hash;
 844         struct hci_conn  *c;
 845
 846         rcu_read_lock();
 847
 848         list_for_each_entry_rcu(c, &h->list, list) {
 849                 if (c->type == LE_LINK && c->state == BT_CONNECT &&
 850                     !test_bit(HCI_CONN_SCANNING, &c->flags)) {
 851                         rcu_read_unlock();
 852                         return c;
 853                 }
 854         }
 855
 856         rcu_read_unlock();
 857
 858         return NULL;
 859 }
 860
 861 int hci_disconnect(struct hci_conn *conn, __u8 reason);
 862 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 863 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 864
 865 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
 866                               u8 role);
 867 int hci_conn_del(struct hci_conn *conn);
 868 void hci_conn_hash_flush(struct hci_dev *hdev);
 869 void hci_conn_check_pending(struct hci_dev *hdev);
 870
 871 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 872 void hci_chan_del(struct hci_chan *chan);
 873 void hci_chan_list_flush(struct hci_conn *conn);
 874 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 875
 876 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
 877                                      u8 dst_type, u8 sec_level,
 878                                      u16 conn_timeout, u8 role);
 879 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 880                                 u8 dst_type, u8 sec_level, u16 conn_timeout,
 881                                 u8 role);
 882 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
 883                                  u8 sec_level, u8 auth_type);
 884 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 885                                  __u16 setting);
 886 int hci_conn_check_link_mode(struct hci_conn *conn);
 887 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 888 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
 889                       bool initiator);
 890 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 891
 892 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 893
 894 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
 895
 896 /*
 897  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 898  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 899  * working or anything else. They just guarantee that the object is available
 900  * and can be dereferenced. So you can use its locks, local variables and any
 901  * other constant data.
 902  * Before accessing runtime data, you _must_ lock the object and then check that
 903  * it is still running. As soon as you release the locks, the connection might
 904  * get dropped, though.
 905  *
 906  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 907  * how long the underlying connection is held. So every channel that runs on the
 908  * hci_conn object calls this to prevent the connection from disappearing. As
 909  * long as you hold a device, you must also guarantee that you have a valid
 910  * reference to the device via hci_conn_get() (or the initial reference from
 911  * hci_conn_add()).
 912  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 913  * break because nobody cares for that. But this means, we cannot use
 914  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 915  */
 916
 917 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
 918 {
 919         get_device(&conn->dev);
 920         return conn;
 921 }
 922
 923 static inline void hci_conn_put(struct hci_conn *conn)
 924 {
 925         put_device(&conn->dev);
 926 }
 927
 928 static inline void hci_conn_hold(struct hci_conn *conn)
 929 {
 930         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 931
 932         atomic_inc(&conn->refcnt);
 933         cancel_delayed_work(&conn->disc_work);
 934 }
 935
 936 static inline void hci_conn_drop(struct hci_conn *conn)
 937 {
 938         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 939
 940         if (atomic_dec_and_test(&conn->refcnt)) {
 941                 unsigned long timeo;
 942
 943                 switch (conn->type) {
 944                 case ACL_LINK:
 945                 case LE_LINK:
 946                         cancel_delayed_work(&conn->idle_work);
 947                         if (conn->state == BT_CONNECTED) {
 948                                 timeo = conn->disc_timeout;
 949                                 if (!conn->out)
 950                                         timeo *= 2;
 951                         } else {
 952                                 timeo = 0;
 953                         }
 954                         break;
 955
 956                 case AMP_LINK:
 957                         timeo = conn->disc_timeout;
 958                         break;
 959
 960                 default:
 961                         timeo = 0;
 962                         break;
 963                 }
 964
 965                 cancel_delayed_work(&conn->disc_work);
 966                 queue_delayed_work(conn->hdev->workqueue,
 967                                    &conn->disc_work, timeo);
 968         }
 969 }
 970
 971 /* ----- HCI Devices ----- */
 972 static inline void hci_dev_put(struct hci_dev *d)
 973 {
 974         BT_DBG("%s orig refcnt %d", d->name,
 975                atomic_read(&d->dev.kobj.kref.refcount));
 976
 977         put_device(&d->dev);
 978 }
 979
 980 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 981 {
 982         BT_DBG("%s orig refcnt %d", d->name,
 983                atomic_read(&d->dev.kobj.kref.refcount));
 984
 985         get_device(&d->dev);
 986         return d;
 987 }
 988
 989 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 990 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 991
 992 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 993 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 994
 995 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 996 {
 997         return dev_get_drvdata(&hdev->dev);
 998 }
 999
1000 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1001 {
1002         dev_set_drvdata(&hdev->dev, data);
1003 }
1004
1005 struct hci_dev *hci_dev_get(int index);
1006 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
1007
1008 struct hci_dev *hci_alloc_dev(void);
1009 void hci_free_dev(struct hci_dev *hdev);
1010 int hci_register_dev(struct hci_dev *hdev);
1011 void hci_unregister_dev(struct hci_dev *hdev);
1012 int hci_suspend_dev(struct hci_dev *hdev);
1013 int hci_resume_dev(struct hci_dev *hdev);
1014 int hci_reset_dev(struct hci_dev *hdev);
1015 int hci_dev_open(__u16 dev);
1016 int hci_dev_close(__u16 dev);
1017 int hci_dev_do_close(struct hci_dev *hdev);
1018 int hci_dev_reset(__u16 dev);
1019 int hci_dev_reset_stat(__u16 dev);
1020 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1021 int hci_get_dev_list(void __user *arg);
1022 int hci_get_dev_info(void __user *arg);
1023 int hci_get_conn_list(void __user *arg);
1024 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1025 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1026 int hci_inquiry(void __user *arg);
1027
1028 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1029                                            bdaddr_t *bdaddr, u8 type);
1030 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1031 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1032 void hci_bdaddr_list_clear(struct list_head *list);
1033
1034 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1035                                                bdaddr_t *addr, u8 addr_type);
1036 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1037                                             bdaddr_t *addr, u8 addr_type);
1038 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1039 void hci_conn_params_clear_all(struct hci_dev *hdev);
1040 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1041
1042 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1043                                                   bdaddr_t *addr,
1044                                                   u8 addr_type);
1045
1046 void hci_uuids_clear(struct hci_dev *hdev);
1047
1048 void hci_link_keys_clear(struct hci_dev *hdev);
1049 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1050 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1051                                   bdaddr_t *bdaddr, u8 *val, u8 type,
1052                                   u8 pin_len, bool *persistent);
1053 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1054                             u8 addr_type, u8 type, u8 authenticated,
1055                             u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1056 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1057                              u8 addr_type, u8 role);
1058 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1059 void hci_smp_ltks_clear(struct hci_dev *hdev);
1060 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1061
1062 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1063 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1064                                      u8 addr_type);
1065 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1066                             u8 addr_type, u8 val[16], bdaddr_t *rpa);
1067 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1068 void hci_smp_irks_clear(struct hci_dev *hdev);
1069
1070 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1071
1072 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1073 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1074                                           bdaddr_t *bdaddr, u8 bdaddr_type);
1075 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1076                             u8 bdaddr_type, u8 *hash192, u8 *rand192,
1077                             u8 *hash256, u8 *rand256);
1078 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1079                                u8 bdaddr_type);
1080
1081 void hci_adv_instances_clear(struct hci_dev *hdev);
1082 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1083 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1084 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1085                          u16 adv_data_len, u8 *adv_data,
1086                          u16 scan_rsp_len, u8 *scan_rsp_data,
1087                          u16 timeout, u16 duration);
1088 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1089
1090 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1091
1092 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1093 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1094
1095 void hci_init_sysfs(struct hci_dev *hdev);
1096 void hci_conn_init_sysfs(struct hci_conn *conn);
1097 void hci_conn_add_sysfs(struct hci_conn *conn);
1098 void hci_conn_del_sysfs(struct hci_conn *conn);
1099
1100 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1101
1102 /* ----- LMP capabilities ----- */
1103 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
1104 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
1105 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
1106 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
1107 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
1108 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
1109 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
1110 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
1111 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
1112 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1113 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1114 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
1115 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1116 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1117 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
1118 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1119 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1120 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1121 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1122
1123 /* ----- Extended LMP capabilities ----- */
1124 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1125 #define lmp_csb_slave_capable(dev)  ((dev)->features[2][0] & LMP_CSB_SLAVE)
1126 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1127 #define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1128 #define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1129 #define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1130
1131 /* ----- Host capabilities ----- */
1132 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1133 #define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1134 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1135 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1136
1137 #define hdev_is_powered(dev)   (test_bit(HCI_UP, &(dev)->flags) && \
1138                                 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1139 #define bredr_sc_enabled(dev)  (lmp_sc_capable(dev) && \
1140                                 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1141
1142 /* ----- HCI protocols ----- */
1143 #define HCI_PROTO_DEFER             0x01
1144
1145 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1146                                         __u8 type, __u8 *flags)
1147 {
1148         switch (type) {
1149         case ACL_LINK:
1150                 return l2cap_connect_ind(hdev, bdaddr);
1151
1152         case SCO_LINK:
1153         case ESCO_LINK:
1154                 return sco_connect_ind(hdev, bdaddr, flags);
1155
1156         default:
1157                 BT_ERR("unknown link type %d", type);
1158                 return -EINVAL;
1159         }
1160 }
1161
1162 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1163 {
1164         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1165                 return HCI_ERROR_REMOTE_USER_TERM;
1166
1167         return l2cap_disconn_ind(conn);
1168 }
1169
1170 /* ----- HCI callbacks ----- */
1171 struct hci_cb {
1172         struct list_head list;
1173
1174         char *name;
1175
1176         void (*connect_cfm)     (struct hci_conn *conn, __u8 status);
1177         void (*disconn_cfm)     (struct hci_conn *conn, __u8 status);
1178         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
1179                                                                 __u8 encrypt);
1180         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
1181         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1182 };
1183
1184 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1185 {
1186         struct hci_cb *cb;
1187
1188         mutex_lock(&hci_cb_list_lock);
1189         list_for_each_entry(cb, &hci_cb_list, list) {
1190                 if (cb->connect_cfm)
1191                         cb->connect_cfm(conn, status);
1192         }
1193         mutex_unlock(&hci_cb_list_lock);
1194
1195         if (conn->connect_cfm_cb)
1196                 conn->connect_cfm_cb(conn, status);
1197 }
1198
1199 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1200 {
1201         struct hci_cb *cb;
1202
1203         mutex_lock(&hci_cb_list_lock);
1204         list_for_each_entry(cb, &hci_cb_list, list) {
1205                 if (cb->disconn_cfm)
1206                         cb->disconn_cfm(conn, reason);
1207         }
1208         mutex_unlock(&hci_cb_list_lock);
1209
1210         if (conn->disconn_cfm_cb)
1211                 conn->disconn_cfm_cb(conn, reason);
1212 }
1213
1214 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1215 {
1216         struct hci_cb *cb;
1217         __u8 encrypt;
1218
1219         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1220                 return;
1221
1222         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1223
1224         mutex_lock(&hci_cb_list_lock);
1225         list_for_each_entry(cb, &hci_cb_list, list) {
1226                 if (cb->security_cfm)
1227                         cb->security_cfm(conn, status, encrypt);
1228         }
1229         mutex_unlock(&hci_cb_list_lock);
1230
1231         if (conn->security_cfm_cb)
1232                 conn->security_cfm_cb(conn, status);
1233 }
1234
1235 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1236                                                                 __u8 encrypt)
1237 {
1238         struct hci_cb *cb;
1239
1240         if (conn->sec_level == BT_SECURITY_SDP)
1241                 conn->sec_level = BT_SECURITY_LOW;
1242
1243         if (conn->pending_sec_level > conn->sec_level)
1244                 conn->sec_level = conn->pending_sec_level;
1245
1246         mutex_lock(&hci_cb_list_lock);
1247         list_for_each_entry(cb, &hci_cb_list, list) {
1248                 if (cb->security_cfm)
1249                         cb->security_cfm(conn, status, encrypt);
1250         }
1251         mutex_unlock(&hci_cb_list_lock);
1252
1253         if (conn->security_cfm_cb)
1254                 conn->security_cfm_cb(conn, status);
1255 }
1256
1257 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1258 {
1259         struct hci_cb *cb;
1260
1261         mutex_lock(&hci_cb_list_lock);
1262         list_for_each_entry(cb, &hci_cb_list, list) {
1263                 if (cb->key_change_cfm)
1264                         cb->key_change_cfm(conn, status);
1265         }
1266         mutex_unlock(&hci_cb_list_lock);
1267 }
1268
1269 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1270                                                                 __u8 role)
1271 {
1272         struct hci_cb *cb;
1273
1274         mutex_lock(&hci_cb_list_lock);
1275         list_for_each_entry(cb, &hci_cb_list, list) {
1276                 if (cb->role_switch_cfm)
1277                         cb->role_switch_cfm(conn, status, role);
1278         }
1279         mutex_unlock(&hci_cb_list_lock);
1280 }
1281
1282 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1283 {
1284         size_t parsed = 0;
1285
1286         if (data_len < 2)
1287                 return false;
1288
1289         while (parsed < data_len - 1) {
1290                 u8 field_len = data[0];
1291
1292                 if (field_len == 0)
1293                         break;
1294
1295                 parsed += field_len + 1;
1296
1297                 if (parsed > data_len)
1298                         break;
1299
1300                 if (data[1] == type)
1301                         return true;
1302
1303                 data += field_len + 1;
1304         }
1305
1306         return false;
1307 }
1308
1309 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1310 {
1311         if (addr_type != ADDR_LE_DEV_RANDOM)
1312                 return false;
1313
1314         if ((bdaddr->b[5] & 0xc0) == 0x40)
1315                return true;
1316
1317         return false;
1318 }
1319
1320 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1321 {
1322         if (addr_type == ADDR_LE_DEV_PUBLIC)
1323                 return true;
1324
1325         /* Check for Random Static address type */
1326         if ((addr->b[5] & 0xc0) == 0xc0)
1327                 return true;
1328
1329         return false;
1330 }
1331
1332 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1333                                           bdaddr_t *bdaddr, u8 addr_type)
1334 {
1335         if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1336                 return NULL;
1337
1338         return hci_find_irk_by_rpa(hdev, bdaddr);
1339 }
1340
1341 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1342                                         u16 to_multiplier)
1343 {
1344         u16 max_latency;
1345
1346         if (min > max || min < 6 || max > 3200)
1347                 return -EINVAL;
1348
1349         if (to_multiplier < 10 || to_multiplier > 3200)
1350                 return -EINVAL;
1351
1352         if (max >= to_multiplier * 8)
1353                 return -EINVAL;
1354
1355         max_latency = (to_multiplier * 4 / max) - 1;
1356         if (latency > 499 || latency > max_latency)
1357                 return -EINVAL;
1358
1359         return 0;
1360 }
1361
1362 int hci_register_cb(struct hci_cb *hcb);
1363 int hci_unregister_cb(struct hci_cb *hcb);
1364
1365 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1366                                const void *param, u32 timeout);
1367 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1368                                   const void *param, u8 event, u32 timeout);
1369
1370 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1371                  const void *param);
1372 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1373 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1374
1375 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1376
1377 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1378                              const void *param, u32 timeout);
1379
1380 /* ----- HCI Sockets ----- */
1381 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1382 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1383                          int flag, struct sock *skip_sk);
1384 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1385
1386 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1387
1388 #define HCI_MGMT_VAR_LEN        BIT(0)
1389 #define HCI_MGMT_NO_HDEV        BIT(1)
1390 #define HCI_MGMT_UNTRUSTED      BIT(2)
1391 #define HCI_MGMT_UNCONFIGURED   BIT(3)
1392
1393 struct hci_mgmt_handler {
1394         int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1395                      u16 data_len);
1396         size_t data_len;
1397         unsigned long flags;
1398 };
1399
1400 struct hci_mgmt_chan {
1401         struct list_head list;
1402         unsigned short channel;
1403         size_t handler_count;
1404         const struct hci_mgmt_handler *handlers;
1405         void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1406 };
1407
1408 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1409 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1410
1411 /* Management interface */
1412 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1413 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1414                                          BIT(BDADDR_LE_RANDOM))
1415 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1416                                          BIT(BDADDR_LE_PUBLIC) | \
1417                                          BIT(BDADDR_LE_RANDOM))
1418
1419 /* These LE scan and inquiry parameters were chosen according to LE General
1420  * Discovery Procedure specification.
1421  */
1422 #define DISCOV_LE_SCAN_WIN              0x12
1423 #define DISCOV_LE_SCAN_INT              0x12
1424 #define DISCOV_LE_TIMEOUT               10240   /* msec */
1425 #define DISCOV_INTERLEAVED_TIMEOUT      5120    /* msec */
1426 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1427 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1428 #define DISCOV_LE_RESTART_DELAY         msecs_to_jiffies(200)   /* msec */
1429
1430 int mgmt_new_settings(struct hci_dev *hdev);
1431 void mgmt_index_added(struct hci_dev *hdev);
1432 void mgmt_index_removed(struct hci_dev *hdev);
1433 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1434 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1435 int mgmt_update_adv_data(struct hci_dev *hdev);
1436 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1437 void mgmt_adv_timeout_expired(struct hci_dev *hdev);
1438 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1439                        bool persistent);
1440 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1441                            u32 flags, u8 *name, u8 name_len);
1442 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1443                               u8 link_type, u8 addr_type, u8 reason,
1444                               bool mgmt_connected);
1445 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1446                             u8 link_type, u8 addr_type, u8 status);
1447 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1448                          u8 addr_type, u8 status);
1449 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1450 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1451                                   u8 status);
1452 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1453                                       u8 status);
1454 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1455                               u8 link_type, u8 addr_type, u32 value,
1456                               u8 confirm_hint);
1457 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1458                                      u8 link_type, u8 addr_type, u8 status);
1459 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1460                                          u8 link_type, u8 addr_type, u8 status);
1461 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1462                               u8 link_type, u8 addr_type);
1463 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1464                                      u8 link_type, u8 addr_type, u8 status);
1465 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1466                                          u8 link_type, u8 addr_type, u8 status);
1467 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1468                              u8 link_type, u8 addr_type, u32 passkey,
1469                              u8 entered);
1470 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1471 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1472 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1473 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1474                                     u8 status);
1475 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1476 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1477                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1478                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1479 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1480                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1481 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1482 bool mgmt_powering_down(struct hci_dev *hdev);
1483 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1484 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1485 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1486                    bool persistent);
1487 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1488                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
1489                          u16 max_interval, u16 latency, u16 timeout);
1490 void mgmt_reenable_advertising(struct hci_dev *hdev);
1491 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1492
1493 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1494                       u16 to_multiplier);
1495 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1496                       __u8 ltk[16], __u8 key_size);
1497
1498 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1499                                u8 *bdaddr_type);
1500
1501 #define SCO_AIRMODE_MASK       0x0003
1502 #define SCO_AIRMODE_CVSD       0x0000
1503 #define SCO_AIRMODE_TRANSP     0x0003
1504
1505 #endif /* __HCI_CORE_H */