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           1
 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 adv_info         adv_instance;
 383         struct list_head        adv_instances;
 384         unsigned int            adv_instance_cnt;
 385         __u8                    cur_adv_instance;
 386         __u16                   adv_instance_timeout;
 387         struct delayed_work     adv_instance_expire;
 388
 389         __u8                    irk[16];
 390         __u32                   rpa_timeout;
 391         struct delayed_work     rpa_expired;
 392         bdaddr_t                rpa;
 393
 394         int (*open)(struct hci_dev *hdev);
 395         int (*close)(struct hci_dev *hdev);
 396         int (*flush)(struct hci_dev *hdev);
 397         int (*setup)(struct hci_dev *hdev);
 398         int (*shutdown)(struct hci_dev *hdev);
 399         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 400         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 401         void (*hw_error)(struct hci_dev *hdev, u8 code);
 402         int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 403 };
 404
 405 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 406
 407 struct hci_conn {
 408         struct list_head list;
 409
 410         atomic_t        refcnt;
 411
 412         bdaddr_t        dst;
 413         __u8            dst_type;
 414         bdaddr_t        src;
 415         __u8            src_type;
 416         bdaddr_t        init_addr;
 417         __u8            init_addr_type;
 418         bdaddr_t        resp_addr;
 419         __u8            resp_addr_type;
 420         __u16           handle;
 421         __u16           state;
 422         __u8            mode;
 423         __u8            type;
 424         __u8            role;
 425         bool            out;
 426         __u8            attempt;
 427         __u8            dev_class[3];
 428         __u8            features[HCI_MAX_PAGES][8];
 429         __u16           pkt_type;
 430         __u16           link_policy;
 431         __u8            key_type;
 432         __u8            auth_type;
 433         __u8            sec_level;
 434         __u8            pending_sec_level;
 435         __u8            pin_length;
 436         __u8            enc_key_size;
 437         __u8            io_capability;
 438         __u32           passkey_notify;
 439         __u8            passkey_entered;
 440         __u16           disc_timeout;
 441         __u16           conn_timeout;
 442         __u16           setting;
 443         __u16           le_conn_min_interval;
 444         __u16           le_conn_max_interval;
 445         __u16           le_conn_interval;
 446         __u16           le_conn_latency;
 447         __u16           le_supv_timeout;
 448         __u8            le_adv_data[HCI_MAX_AD_LENGTH];
 449         __u8            le_adv_data_len;
 450         __s8            rssi;
 451         __s8            tx_power;
 452         __s8            max_tx_power;
 453         unsigned long   flags;
 454
 455         __u32           clock;
 456         __u16           clock_accuracy;
 457
 458         unsigned long   conn_info_timestamp;
 459
 460         __u8            remote_cap;
 461         __u8            remote_auth;
 462         __u8            remote_id;
 463
 464         unsigned int    sent;
 465
 466         struct sk_buff_head data_q;
 467         struct list_head chan_list;
 468
 469         struct delayed_work disc_work;
 470         struct delayed_work auto_accept_work;
 471         struct delayed_work idle_work;
 472         struct delayed_work le_conn_timeout;
 473
 474         struct device   dev;
 475         struct dentry   *debugfs;
 476
 477         struct hci_dev  *hdev;
 478         void            *l2cap_data;
 479         void            *sco_data;
 480         struct amp_mgr  *amp_mgr;
 481
 482         struct hci_conn *link;
 483
 484         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 485         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 486         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 487 };
 488
 489 struct hci_chan {
 490         struct list_head list;
 491         __u16 handle;
 492         struct hci_conn *conn;
 493         struct sk_buff_head data_q;
 494         unsigned int    sent;
 495         __u8            state;
 496 };
 497
 498 struct hci_conn_params {
 499         struct list_head list;
 500         struct list_head action;
 501
 502         bdaddr_t addr;
 503         u8 addr_type;
 504
 505         u16 conn_min_interval;
 506         u16 conn_max_interval;
 507         u16 conn_latency;
 508         u16 supervision_timeout;
 509
 510         enum {
 511                 HCI_AUTO_CONN_DISABLED,
 512                 HCI_AUTO_CONN_REPORT,
 513                 HCI_AUTO_CONN_DIRECT,
 514                 HCI_AUTO_CONN_ALWAYS,
 515                 HCI_AUTO_CONN_LINK_LOSS,
 516         } auto_connect;
 517
 518         struct hci_conn *conn;
 519 };
 520
 521 extern struct list_head hci_dev_list;
 522 extern struct list_head hci_cb_list;
 523 extern rwlock_t hci_dev_list_lock;
 524 extern struct mutex hci_cb_list_lock;
 525
 526 #define hci_dev_set_flag(hdev, nr)             set_bit((nr), (hdev)->dev_flags)
 527 #define hci_dev_clear_flag(hdev, nr)           clear_bit((nr), (hdev)->dev_flags)
 528 #define hci_dev_change_flag(hdev, nr)          change_bit((nr), (hdev)->dev_flags)
 529 #define hci_dev_test_flag(hdev, nr)            test_bit((nr), (hdev)->dev_flags)
 530 #define hci_dev_test_and_set_flag(hdev, nr)    test_and_set_bit((nr), (hdev)->dev_flags)
 531 #define hci_dev_test_and_clear_flag(hdev, nr)  test_and_clear_bit((nr), (hdev)->dev_flags)
 532 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
 533
 534 #define hci_dev_clear_volatile_flags(hdev)                      \
 535         do {                                                    \
 536                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);          \
 537                 hci_dev_clear_flag(hdev, HCI_LE_ADV);           \
 538                 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);     \
 539         } while (0)
 540
 541 /* ----- HCI interface to upper protocols ----- */
 542 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 543 int l2cap_disconn_ind(struct hci_conn *hcon);
 544 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 545
 546 #if IS_ENABLED(CONFIG_BT_BREDR)
 547 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 548 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 549 #else
 550 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 551                                   __u8 *flags)
 552 {
 553         return 0;
 554 }
 555
 556 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
 557 {
 558 }
 559 #endif
 560
 561 /* ----- Inquiry cache ----- */
 562 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 563 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 564
 565 static inline void discovery_init(struct hci_dev *hdev)
 566 {
 567         hdev->discovery.state = DISCOVERY_STOPPED;
 568         INIT_LIST_HEAD(&hdev->discovery.all);
 569         INIT_LIST_HEAD(&hdev->discovery.unknown);
 570         INIT_LIST_HEAD(&hdev->discovery.resolve);
 571         hdev->discovery.report_invalid_rssi = true;
 572         hdev->discovery.rssi = HCI_RSSI_INVALID;
 573 }
 574
 575 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 576 {
 577         hdev->discovery.result_filtering = false;
 578         hdev->discovery.report_invalid_rssi = true;
 579         hdev->discovery.rssi = HCI_RSSI_INVALID;
 580         hdev->discovery.uuid_count = 0;
 581         kfree(hdev->discovery.uuids);
 582         hdev->discovery.uuids = NULL;
 583         hdev->discovery.scan_start = 0;
 584         hdev->discovery.scan_duration = 0;
 585 }
 586
 587 static inline void adv_info_init(struct hci_dev *hdev)
 588 {
 589         memset(&hdev->adv_instance, 0, sizeof(struct adv_info));
 590 }
 591
 592 bool hci_discovery_active(struct hci_dev *hdev);
 593
 594 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 595
 596 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 597 {
 598         return list_empty(&hdev->discovery.all);
 599 }
 600
 601 static inline long inquiry_cache_age(struct hci_dev *hdev)
 602 {
 603         struct discovery_state *c = &hdev->discovery;
 604         return jiffies - c->timestamp;
 605 }
 606
 607 static inline long inquiry_entry_age(struct inquiry_entry *e)
 608 {
 609         return jiffies - e->timestamp;
 610 }
 611
 612 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 613                                                bdaddr_t *bdaddr);
 614 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 615                                                        bdaddr_t *bdaddr);
 616 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 617                                                        bdaddr_t *bdaddr,
 618                                                        int state);
 619 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 620                                       struct inquiry_entry *ie);
 621 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 622                              bool name_known);
 623 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 624
 625 /* ----- HCI Connections ----- */
 626 enum {
 627         HCI_CONN_AUTH_PEND,
 628         HCI_CONN_REAUTH_PEND,
 629         HCI_CONN_ENCRYPT_PEND,
 630         HCI_CONN_RSWITCH_PEND,
 631         HCI_CONN_MODE_CHANGE_PEND,
 632         HCI_CONN_SCO_SETUP_PEND,
 633         HCI_CONN_MGMT_CONNECTED,
 634         HCI_CONN_SSP_ENABLED,
 635         HCI_CONN_SC_ENABLED,
 636         HCI_CONN_AES_CCM,
 637         HCI_CONN_POWER_SAVE,
 638         HCI_CONN_FLUSH_KEY,
 639         HCI_CONN_ENCRYPT,
 640         HCI_CONN_AUTH,
 641         HCI_CONN_SECURE,
 642         HCI_CONN_FIPS,
 643         HCI_CONN_STK_ENCRYPT,
 644         HCI_CONN_AUTH_INITIATOR,
 645         HCI_CONN_DROP,
 646         HCI_CONN_PARAM_REMOVAL_PEND,
 647         HCI_CONN_NEW_LINK_KEY,
 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_state(struct hci_dev *hdev,
 798                                                         __u8 type, __u16 state)
 799 {
 800         struct hci_conn_hash *h = &hdev->conn_hash;
 801         struct hci_conn  *c;
 802
 803         rcu_read_lock();
 804
 805         list_for_each_entry_rcu(c, &h->list, list) {
 806                 if (c->type == type && c->state == state) {
 807                         rcu_read_unlock();
 808                         return c;
 809                 }
 810         }
 811
 812         rcu_read_unlock();
 813
 814         return NULL;
 815 }
 816
 817 int hci_disconnect(struct hci_conn *conn, __u8 reason);
 818 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 819 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 820
 821 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
 822                               u8 role);
 823 int hci_conn_del(struct hci_conn *conn);
 824 void hci_conn_hash_flush(struct hci_dev *hdev);
 825 void hci_conn_check_pending(struct hci_dev *hdev);
 826
 827 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 828 void hci_chan_del(struct hci_chan *chan);
 829 void hci_chan_list_flush(struct hci_conn *conn);
 830 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 831
 832 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 833                                 u8 dst_type, u8 sec_level, u16 conn_timeout,
 834                                 u8 role);
 835 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
 836                                  u8 sec_level, u8 auth_type);
 837 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 838                                  __u16 setting);
 839 int hci_conn_check_link_mode(struct hci_conn *conn);
 840 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 841 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
 842                       bool initiator);
 843 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 844
 845 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 846
 847 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
 848
 849 /*
 850  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 851  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 852  * working or anything else. They just guarantee that the object is available
 853  * and can be dereferenced. So you can use its locks, local variables and any
 854  * other constant data.
 855  * Before accessing runtime data, you _must_ lock the object and then check that
 856  * it is still running. As soon as you release the locks, the connection might
 857  * get dropped, though.
 858  *
 859  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 860  * how long the underlying connection is held. So every channel that runs on the
 861  * hci_conn object calls this to prevent the connection from disappearing. As
 862  * long as you hold a device, you must also guarantee that you have a valid
 863  * reference to the device via hci_conn_get() (or the initial reference from
 864  * hci_conn_add()).
 865  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 866  * break because nobody cares for that. But this means, we cannot use
 867  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 868  */
 869
 870 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
 871 {
 872         get_device(&conn->dev);
 873         return conn;
 874 }
 875
 876 static inline void hci_conn_put(struct hci_conn *conn)
 877 {
 878         put_device(&conn->dev);
 879 }
 880
 881 static inline void hci_conn_hold(struct hci_conn *conn)
 882 {
 883         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 884
 885         atomic_inc(&conn->refcnt);
 886         cancel_delayed_work(&conn->disc_work);
 887 }
 888
 889 static inline void hci_conn_drop(struct hci_conn *conn)
 890 {
 891         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 892
 893         if (atomic_dec_and_test(&conn->refcnt)) {
 894                 unsigned long timeo;
 895
 896                 switch (conn->type) {
 897                 case ACL_LINK:
 898                 case LE_LINK:
 899                         cancel_delayed_work(&conn->idle_work);
 900                         if (conn->state == BT_CONNECTED) {
 901                                 timeo = conn->disc_timeout;
 902                                 if (!conn->out)
 903                                         timeo *= 2;
 904                         } else {
 905                                 timeo = 0;
 906                         }
 907                         break;
 908
 909                 case AMP_LINK:
 910                         timeo = conn->disc_timeout;
 911                         break;
 912
 913                 default:
 914                         timeo = 0;
 915                         break;
 916                 }
 917
 918                 cancel_delayed_work(&conn->disc_work);
 919                 queue_delayed_work(conn->hdev->workqueue,
 920                                    &conn->disc_work, timeo);
 921         }
 922 }
 923
 924 /* ----- HCI Devices ----- */
 925 static inline void hci_dev_put(struct hci_dev *d)
 926 {
 927         BT_DBG("%s orig refcnt %d", d->name,
 928                atomic_read(&d->dev.kobj.kref.refcount));
 929
 930         put_device(&d->dev);
 931 }
 932
 933 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 934 {
 935         BT_DBG("%s orig refcnt %d", d->name,
 936                atomic_read(&d->dev.kobj.kref.refcount));
 937
 938         get_device(&d->dev);
 939         return d;
 940 }
 941
 942 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 943 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 944
 945 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 946 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 947
 948 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 949 {
 950         return dev_get_drvdata(&hdev->dev);
 951 }
 952
 953 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 954 {
 955         dev_set_drvdata(&hdev->dev, data);
 956 }
 957
 958 struct hci_dev *hci_dev_get(int index);
 959 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
 960
 961 struct hci_dev *hci_alloc_dev(void);
 962 void hci_free_dev(struct hci_dev *hdev);
 963 int hci_register_dev(struct hci_dev *hdev);
 964 void hci_unregister_dev(struct hci_dev *hdev);
 965 int hci_suspend_dev(struct hci_dev *hdev);
 966 int hci_resume_dev(struct hci_dev *hdev);
 967 int hci_reset_dev(struct hci_dev *hdev);
 968 int hci_dev_open(__u16 dev);
 969 int hci_dev_close(__u16 dev);
 970 int hci_dev_reset(__u16 dev);
 971 int hci_dev_reset_stat(__u16 dev);
 972 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 973 int hci_get_dev_list(void __user *arg);
 974 int hci_get_dev_info(void __user *arg);
 975 int hci_get_conn_list(void __user *arg);
 976 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 977 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 978 int hci_inquiry(void __user *arg);
 979
 980 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
 981                                            bdaddr_t *bdaddr, u8 type);
 982 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
 983 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
 984 void hci_bdaddr_list_clear(struct list_head *list);
 985
 986 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
 987                                                bdaddr_t *addr, u8 addr_type);
 988 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
 989                                             bdaddr_t *addr, u8 addr_type);
 990 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
 991 void hci_conn_params_clear_all(struct hci_dev *hdev);
 992 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
 993
 994 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
 995                                                   bdaddr_t *addr,
 996                                                   u8 addr_type);
 997
 998 void hci_uuids_clear(struct hci_dev *hdev);
 999
1000 void hci_link_keys_clear(struct hci_dev *hdev);
1001 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1002 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1003                                   bdaddr_t *bdaddr, u8 *val, u8 type,
1004                                   u8 pin_len, bool *persistent);
1005 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1006                             u8 addr_type, u8 type, u8 authenticated,
1007                             u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1008 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1009                              u8 addr_type, u8 role);
1010 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1011 void hci_smp_ltks_clear(struct hci_dev *hdev);
1012 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1013
1014 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1015 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1016                                      u8 addr_type);
1017 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1018                             u8 addr_type, u8 val[16], bdaddr_t *rpa);
1019 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1020 void hci_smp_irks_clear(struct hci_dev *hdev);
1021
1022 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1023
1024 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1025 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1026                                           bdaddr_t *bdaddr, u8 bdaddr_type);
1027 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1028                             u8 bdaddr_type, u8 *hash192, u8 *rand192,
1029                             u8 *hash256, u8 *rand256);
1030 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1031                                u8 bdaddr_type);
1032
1033 void hci_adv_instances_clear(struct hci_dev *hdev);
1034 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1035 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1036 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1037                          u16 adv_data_len, u8 *adv_data,
1038                          u16 scan_rsp_len, u8 *scan_rsp_data,
1039                          u16 timeout, u16 duration);
1040 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1041
1042 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1043
1044 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1045
1046 void hci_init_sysfs(struct hci_dev *hdev);
1047 void hci_conn_init_sysfs(struct hci_conn *conn);
1048 void hci_conn_add_sysfs(struct hci_conn *conn);
1049 void hci_conn_del_sysfs(struct hci_conn *conn);
1050
1051 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1052
1053 /* ----- LMP capabilities ----- */
1054 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
1055 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
1056 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
1057 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
1058 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
1059 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
1060 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
1061 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
1062 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
1063 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1064 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1065 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
1066 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1067 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1068 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
1069 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1070 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1071 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1072 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1073
1074 /* ----- Extended LMP capabilities ----- */
1075 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1076 #define lmp_csb_slave_capable(dev)  ((dev)->features[2][0] & LMP_CSB_SLAVE)
1077 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1078 #define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1079 #define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1080 #define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1081
1082 /* ----- Host capabilities ----- */
1083 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1084 #define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1085 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1086 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1087
1088 #define hdev_is_powered(dev)   (test_bit(HCI_UP, &(dev)->flags) && \
1089                                 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1090 #define bredr_sc_enabled(dev)  (lmp_sc_capable(dev) && \
1091                                 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1092
1093 /* ----- HCI protocols ----- */
1094 #define HCI_PROTO_DEFER             0x01
1095
1096 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1097                                         __u8 type, __u8 *flags)
1098 {
1099         switch (type) {
1100         case ACL_LINK:
1101                 return l2cap_connect_ind(hdev, bdaddr);
1102
1103         case SCO_LINK:
1104         case ESCO_LINK:
1105                 return sco_connect_ind(hdev, bdaddr, flags);
1106
1107         default:
1108                 BT_ERR("unknown link type %d", type);
1109                 return -EINVAL;
1110         }
1111 }
1112
1113 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1114 {
1115         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1116                 return HCI_ERROR_REMOTE_USER_TERM;
1117
1118         return l2cap_disconn_ind(conn);
1119 }
1120
1121 /* ----- HCI callbacks ----- */
1122 struct hci_cb {
1123         struct list_head list;
1124
1125         char *name;
1126
1127         void (*connect_cfm)     (struct hci_conn *conn, __u8 status);
1128         void (*disconn_cfm)     (struct hci_conn *conn, __u8 status);
1129         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
1130                                                                 __u8 encrypt);
1131         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
1132         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1133 };
1134
1135 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1136 {
1137         struct hci_cb *cb;
1138
1139         mutex_lock(&hci_cb_list_lock);
1140         list_for_each_entry(cb, &hci_cb_list, list) {
1141                 if (cb->connect_cfm)
1142                         cb->connect_cfm(conn, status);
1143         }
1144         mutex_unlock(&hci_cb_list_lock);
1145
1146         if (conn->connect_cfm_cb)
1147                 conn->connect_cfm_cb(conn, status);
1148 }
1149
1150 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1151 {
1152         struct hci_cb *cb;
1153
1154         mutex_lock(&hci_cb_list_lock);
1155         list_for_each_entry(cb, &hci_cb_list, list) {
1156                 if (cb->disconn_cfm)
1157                         cb->disconn_cfm(conn, reason);
1158         }
1159         mutex_unlock(&hci_cb_list_lock);
1160
1161         if (conn->disconn_cfm_cb)
1162                 conn->disconn_cfm_cb(conn, reason);
1163 }
1164
1165 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1166 {
1167         struct hci_cb *cb;
1168         __u8 encrypt;
1169
1170         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1171                 return;
1172
1173         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1174
1175         mutex_lock(&hci_cb_list_lock);
1176         list_for_each_entry(cb, &hci_cb_list, list) {
1177                 if (cb->security_cfm)
1178                         cb->security_cfm(conn, status, encrypt);
1179         }
1180         mutex_unlock(&hci_cb_list_lock);
1181
1182         if (conn->security_cfm_cb)
1183                 conn->security_cfm_cb(conn, status);
1184 }
1185
1186 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1187                                                                 __u8 encrypt)
1188 {
1189         struct hci_cb *cb;
1190
1191         if (conn->sec_level == BT_SECURITY_SDP)
1192                 conn->sec_level = BT_SECURITY_LOW;
1193
1194         if (conn->pending_sec_level > conn->sec_level)
1195                 conn->sec_level = conn->pending_sec_level;
1196
1197         mutex_lock(&hci_cb_list_lock);
1198         list_for_each_entry(cb, &hci_cb_list, list) {
1199                 if (cb->security_cfm)
1200                         cb->security_cfm(conn, status, encrypt);
1201         }
1202         mutex_unlock(&hci_cb_list_lock);
1203
1204         if (conn->security_cfm_cb)
1205                 conn->security_cfm_cb(conn, status);
1206 }
1207
1208 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1209 {
1210         struct hci_cb *cb;
1211
1212         mutex_lock(&hci_cb_list_lock);
1213         list_for_each_entry(cb, &hci_cb_list, list) {
1214                 if (cb->key_change_cfm)
1215                         cb->key_change_cfm(conn, status);
1216         }
1217         mutex_unlock(&hci_cb_list_lock);
1218 }
1219
1220 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1221                                                                 __u8 role)
1222 {
1223         struct hci_cb *cb;
1224
1225         mutex_lock(&hci_cb_list_lock);
1226         list_for_each_entry(cb, &hci_cb_list, list) {
1227                 if (cb->role_switch_cfm)
1228                         cb->role_switch_cfm(conn, status, role);
1229         }
1230         mutex_unlock(&hci_cb_list_lock);
1231 }
1232
1233 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1234 {
1235         size_t parsed = 0;
1236
1237         if (data_len < 2)
1238                 return false;
1239
1240         while (parsed < data_len - 1) {
1241                 u8 field_len = data[0];
1242
1243                 if (field_len == 0)
1244                         break;
1245
1246                 parsed += field_len + 1;
1247
1248                 if (parsed > data_len)
1249                         break;
1250
1251                 if (data[1] == type)
1252                         return true;
1253
1254                 data += field_len + 1;
1255         }
1256
1257         return false;
1258 }
1259
1260 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1261 {
1262         if (addr_type != ADDR_LE_DEV_RANDOM)
1263                 return false;
1264
1265         if ((bdaddr->b[5] & 0xc0) == 0x40)
1266                return true;
1267
1268         return false;
1269 }
1270
1271 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1272 {
1273         if (addr_type == ADDR_LE_DEV_PUBLIC)
1274                 return true;
1275
1276         /* Check for Random Static address type */
1277         if ((addr->b[5] & 0xc0) == 0xc0)
1278                 return true;
1279
1280         return false;
1281 }
1282
1283 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1284                                           bdaddr_t *bdaddr, u8 addr_type)
1285 {
1286         if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1287                 return NULL;
1288
1289         return hci_find_irk_by_rpa(hdev, bdaddr);
1290 }
1291
1292 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1293                                         u16 to_multiplier)
1294 {
1295         u16 max_latency;
1296
1297         if (min > max || min < 6 || max > 3200)
1298                 return -EINVAL;
1299
1300         if (to_multiplier < 10 || to_multiplier > 3200)
1301                 return -EINVAL;
1302
1303         if (max >= to_multiplier * 8)
1304                 return -EINVAL;
1305
1306         max_latency = (to_multiplier * 8 / max) - 1;
1307         if (latency > 499 || latency > max_latency)
1308                 return -EINVAL;
1309
1310         return 0;
1311 }
1312
1313 int hci_register_cb(struct hci_cb *hcb);
1314 int hci_unregister_cb(struct hci_cb *hcb);
1315
1316 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1317                                const void *param, u32 timeout);
1318 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1319                                   const void *param, u8 event, u32 timeout);
1320
1321 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1322                  const void *param);
1323 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1324 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1325
1326 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1327
1328 /* ----- HCI Sockets ----- */
1329 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1330 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1331                          int flag, struct sock *skip_sk);
1332 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1333
1334 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1335
1336 #define HCI_MGMT_VAR_LEN        BIT(0)
1337 #define HCI_MGMT_NO_HDEV        BIT(1)
1338 #define HCI_MGMT_UNTRUSTED      BIT(2)
1339 #define HCI_MGMT_UNCONFIGURED   BIT(3)
1340
1341 struct hci_mgmt_handler {
1342         int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1343                      u16 data_len);
1344         size_t data_len;
1345         unsigned long flags;
1346 };
1347
1348 struct hci_mgmt_chan {
1349         struct list_head list;
1350         unsigned short channel;
1351         size_t handler_count;
1352         const struct hci_mgmt_handler *handlers;
1353         void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1354 };
1355
1356 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1357 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1358
1359 /* Management interface */
1360 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1361 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1362                                          BIT(BDADDR_LE_RANDOM))
1363 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1364                                          BIT(BDADDR_LE_PUBLIC) | \
1365                                          BIT(BDADDR_LE_RANDOM))
1366
1367 /* These LE scan and inquiry parameters were chosen according to LE General
1368  * Discovery Procedure specification.
1369  */
1370 #define DISCOV_LE_SCAN_WIN              0x12
1371 #define DISCOV_LE_SCAN_INT              0x12
1372 #define DISCOV_LE_TIMEOUT               10240   /* msec */
1373 #define DISCOV_INTERLEAVED_TIMEOUT      5120    /* msec */
1374 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1375 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1376 #define DISCOV_LE_RESTART_DELAY         msecs_to_jiffies(200)   /* msec */
1377
1378 int mgmt_new_settings(struct hci_dev *hdev);
1379 void mgmt_index_added(struct hci_dev *hdev);
1380 void mgmt_index_removed(struct hci_dev *hdev);
1381 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1382 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1383 int mgmt_update_adv_data(struct hci_dev *hdev);
1384 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1385 void mgmt_adv_timeout_expired(struct hci_dev *hdev);
1386 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1387                        bool persistent);
1388 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1389                            u32 flags, u8 *name, u8 name_len);
1390 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1391                               u8 link_type, u8 addr_type, u8 reason,
1392                               bool mgmt_connected);
1393 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1394                             u8 link_type, u8 addr_type, u8 status);
1395 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1396                          u8 addr_type, u8 status);
1397 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1398 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1399                                   u8 status);
1400 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1401                                       u8 status);
1402 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1403                               u8 link_type, u8 addr_type, u32 value,
1404                               u8 confirm_hint);
1405 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1406                                      u8 link_type, u8 addr_type, u8 status);
1407 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1408                                          u8 link_type, u8 addr_type, u8 status);
1409 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1410                               u8 link_type, u8 addr_type);
1411 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1412                                      u8 link_type, u8 addr_type, u8 status);
1413 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1414                                          u8 link_type, u8 addr_type, u8 status);
1415 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1416                              u8 link_type, u8 addr_type, u32 passkey,
1417                              u8 entered);
1418 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1419 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1420 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1421 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1422                                     u8 status);
1423 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1424 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1425                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1426                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1427 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1428                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1429 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1430 bool mgmt_powering_down(struct hci_dev *hdev);
1431 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1432 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1433 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1434                    bool persistent);
1435 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1436                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
1437                          u16 max_interval, u16 latency, u16 timeout);
1438 void mgmt_reenable_advertising(struct hci_dev *hdev);
1439 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1440
1441 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1442                       u16 to_multiplier);
1443 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1444                       __u8 ltk[16], __u8 key_size);
1445
1446 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1447                                u8 *bdaddr_type);
1448
1449 #define SCO_AIRMODE_MASK       0x0003
1450 #define SCO_AIRMODE_CVSD       0x0000
1451 #define SCO_AIRMODE_TRANSP     0x0003
1452
1453 #endif /* __HCI_CORE_H */