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