include/net/bluetooth/hci_core.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
   4
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 #ifndef __HCI_CORE_H
  26 #define __HCI_CORE_H
  27
  28 #include <net/bluetooth/hci.h>
  29 #include <net/bluetooth/hci_sock.h>
  30
  31 /* HCI priority */
  32 #define HCI_PRIO_MAX    7
  33
  34 /* HCI Core structures */
  35 struct inquiry_data {
  36         bdaddr_t        bdaddr;
  37         __u8            pscan_rep_mode;
  38         __u8            pscan_period_mode;
  39         __u8            pscan_mode;
  40         __u8            dev_class[3];
  41         __le16          clock_offset;
  42         __s8            rssi;
  43         __u8            ssp_mode;
  44 };
  45
  46 struct inquiry_entry {
  47         struct list_head        all;            /* inq_cache.all */
  48         struct list_head        list;           /* unknown or resolve */
  49         enum {
  50                 NAME_NOT_KNOWN,
  51                 NAME_NEEDED,
  52                 NAME_PENDING,
  53                 NAME_KNOWN,
  54         } name_state;
  55         __u32                   timestamp;
  56         struct inquiry_data     data;
  57 };
  58
  59 struct discovery_state {
  60         int                     type;
  61         enum {
  62                 DISCOVERY_STOPPED,
  63                 DISCOVERY_STARTING,
  64                 DISCOVERY_FINDING,
  65                 DISCOVERY_RESOLVING,
  66                 DISCOVERY_STOPPING,
  67         } state;
  68         struct list_head        all;    /* All devices found during inquiry */
  69         struct list_head        unknown;        /* Name state not known */
  70         struct list_head        resolve;        /* Name needs to be resolved */
  71         __u32                   timestamp;
  72         bdaddr_t                last_adv_addr;
  73         u8                      last_adv_addr_type;
  74         s8                      last_adv_rssi;
  75         u32                     last_adv_flags;
  76         u8                      last_adv_data[HCI_MAX_AD_LENGTH];
  77         u8                      last_adv_data_len;
  78         bool                    report_invalid_rssi;
  79         bool                    result_filtering;
  80         s8                      rssi;
  81         u16                     uuid_count;
  82         u8                      (*uuids)[16];
  83         unsigned long           scan_start;
  84         unsigned long           scan_duration;
  85 };
  86
  87 struct hci_conn_hash {
  88         struct list_head list;
  89         unsigned int     acl_num;
  90         unsigned int     amp_num;
  91         unsigned int     sco_num;
  92         unsigned int     le_num;
  93         unsigned int     le_num_slave;
  94 };
  95
  96 struct bdaddr_list {
  97         struct list_head list;
  98         bdaddr_t bdaddr;
  99         u8 bdaddr_type;
 100 };
 101
 102 struct bt_uuid {
 103         struct list_head list;
 104         u8 uuid[16];
 105         u8 size;
 106         u8 svc_hint;
 107 };
 108
 109 struct smp_csrk {
 110         bdaddr_t bdaddr;
 111         u8 bdaddr_type;
 112         u8 type;
 113         u8 val[16];
 114 };
 115
 116 struct smp_ltk {
 117         struct list_head list;
 118         struct rcu_head rcu;
 119         bdaddr_t bdaddr;
 120         u8 bdaddr_type;
 121         u8 authenticated;
 122         u8 type;
 123         u8 enc_size;
 124         __le16 ediv;
 125         __le64 rand;
 126         u8 val[16];
 127 };
 128
 129 struct smp_irk {
 130         struct list_head list;
 131         struct rcu_head rcu;
 132         bdaddr_t rpa;
 133         bdaddr_t bdaddr;
 134         u8 addr_type;
 135         u8 val[16];
 136 };
 137
 138 struct link_key {
 139         struct list_head list;
 140         struct rcu_head rcu;
 141         bdaddr_t bdaddr;
 142         u8 type;
 143         u8 val[HCI_LINK_KEY_SIZE];
 144         u8 pin_len;
 145 };
 146
 147 struct oob_data {
 148         struct list_head list;
 149         bdaddr_t bdaddr;
 150         u8 bdaddr_type;
 151         u8 present;
 152         u8 hash192[16];
 153         u8 rand192[16];
 154         u8 hash256[16];
 155         u8 rand256[16];
 156 };
 157
 158 struct adv_info {
 159         struct list_head list;
 160         bool pending;
 161         __u8    instance;
 162         __u32   flags;
 163         __u16   timeout;
 164         __u16   remaining_time;
 165         __u16   duration;
 166         __u16   adv_data_len;
 167         __u8    adv_data[HCI_MAX_AD_LENGTH];
 168         __u16   scan_rsp_len;
 169         __u8    scan_rsp_data[HCI_MAX_AD_LENGTH];
 170 };
 171
 172 #define HCI_MAX_ADV_INSTANCES           5
 173 #define HCI_DEFAULT_ADV_DURATION        2
 174
 175 #define HCI_MAX_SHORT_NAME_LENGTH       10
 176
 177 /* Default LE RPA expiry time, 15 minutes */
 178 #define HCI_DEFAULT_RPA_TIMEOUT         (15 * 60)
 179
 180 /* Default min/max age of connection information (1s/3s) */
 181 #define DEFAULT_CONN_INFO_MIN_AGE       1000
 182 #define DEFAULT_CONN_INFO_MAX_AGE       3000
 183
 184 struct amp_assoc {
 185         __u16   len;
 186         __u16   offset;
 187         __u16   rem_len;
 188         __u16   len_so_far;
 189         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
 190 };
 191
 192 #define HCI_MAX_PAGES   3
 193
 194 struct hci_dev {
 195         struct list_head list;
 196         struct mutex    lock;
 197
 198         char            name[8];
 199         unsigned long   flags;
 200         __u16           id;
 201         __u8            bus;
 202         __u8            dev_type;
 203         bdaddr_t        bdaddr;
 204         bdaddr_t        setup_addr;
 205         bdaddr_t        public_addr;
 206         bdaddr_t        random_addr;
 207         bdaddr_t        static_addr;
 208         __u8            adv_addr_type;
 209         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 210         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 211         __u8            eir[HCI_MAX_EIR_LENGTH];
 212         __u8            dev_class[3];
 213         __u8            major_class;
 214         __u8            minor_class;
 215         __u8            max_page;
 216         __u8            features[HCI_MAX_PAGES][8];
 217         __u8            le_features[8];
 218         __u8            le_white_list_size;
 219         __u8            le_states[8];
 220         __u8            commands[64];
 221         __u8            hci_ver;
 222         __u16           hci_rev;
 223         __u8            lmp_ver;
 224         __u16           manufacturer;
 225         __u16           lmp_subver;
 226         __u16           voice_setting;
 227         __u8            num_iac;
 228         __u8            stored_max_keys;
 229         __u8            stored_num_keys;
 230         __u8            io_capability;
 231         __s8            inq_tx_power;
 232         __u16           page_scan_interval;
 233         __u16           page_scan_window;
 234         __u8            page_scan_type;
 235         __u8            le_adv_channel_map;
 236         __u16           le_adv_min_interval;
 237         __u16           le_adv_max_interval;
 238         __u8            le_scan_type;
 239         __u16           le_scan_interval;
 240         __u16           le_scan_window;
 241         __u16           le_conn_min_interval;
 242         __u16           le_conn_max_interval;
 243         __u16           le_conn_latency;
 244         __u16           le_supv_timeout;
 245         __u16           le_def_tx_len;
 246         __u16           le_def_tx_time;
 247         __u16           le_max_tx_len;
 248         __u16           le_max_tx_time;
 249         __u16           le_max_rx_len;
 250         __u16           le_max_rx_time;
 251         __u16           discov_interleaved_timeout;
 252         __u16           conn_info_min_age;
 253         __u16           conn_info_max_age;
 254         __u8            ssp_debug_mode;
 255         __u8            hw_error_code;
 256         __u32           clock;
 257
 258         __u16           devid_source;
 259         __u16           devid_vendor;
 260         __u16           devid_product;
 261         __u16           devid_version;
 262
 263         __u16           pkt_type;
 264         __u16           esco_type;
 265         __u16           link_policy;
 266         __u16           link_mode;
 267
 268         __u32           idle_timeout;
 269         __u16           sniff_min_interval;
 270         __u16           sniff_max_interval;
 271
 272         __u8            amp_status;
 273         __u32           amp_total_bw;
 274         __u32           amp_max_bw;
 275         __u32           amp_min_latency;
 276         __u32           amp_max_pdu;
 277         __u8            amp_type;
 278         __u16           amp_pal_cap;
 279         __u16           amp_assoc_size;
 280         __u32           amp_max_flush_to;
 281         __u32           amp_be_flush_to;
 282
 283         struct amp_assoc        loc_assoc;
 284
 285         __u8            flow_ctl_mode;
 286
 287         unsigned int    auto_accept_delay;
 288
 289         unsigned long   quirks;
 290
 291         atomic_t        cmd_cnt;
 292         unsigned int    acl_cnt;
 293         unsigned int    sco_cnt;
 294         unsigned int    le_cnt;
 295
 296         unsigned int    acl_mtu;
 297         unsigned int    sco_mtu;
 298         unsigned int    le_mtu;
 299         unsigned int    acl_pkts;
 300         unsigned int    sco_pkts;
 301         unsigned int    le_pkts;
 302
 303         __u16           block_len;
 304         __u16           block_mtu;
 305         __u16           num_blocks;
 306         __u16           block_cnt;
 307
 308         unsigned long   acl_last_tx;
 309         unsigned long   sco_last_tx;
 310         unsigned long   le_last_tx;
 311
 312         struct workqueue_struct *workqueue;
 313         struct workqueue_struct *req_workqueue;
 314
 315         struct work_struct      power_on;
 316         struct delayed_work     power_off;
 317         struct work_struct      error_reset;
 318
 319         __u16                   discov_timeout;
 320         struct delayed_work     discov_off;
 321
 322         struct delayed_work     service_cache;
 323
 324         struct delayed_work     cmd_timer;
 325
 326         struct work_struct      rx_work;
 327         struct work_struct      cmd_work;
 328         struct work_struct      tx_work;
 329
 330         struct sk_buff_head     rx_q;
 331         struct sk_buff_head     raw_q;
 332         struct sk_buff_head     cmd_q;
 333
 334         struct sk_buff          *sent_cmd;
 335
 336         struct mutex            req_lock;
 337         wait_queue_head_t       req_wait_q;
 338         __u32                   req_status;
 339         __u32                   req_result;
 340         struct sk_buff          *req_skb;
 341
 342         void                    *smp_data;
 343         void                    *smp_bredr_data;
 344
 345         struct discovery_state  discovery;
 346         struct hci_conn_hash    conn_hash;
 347
 348         struct list_head        mgmt_pending;
 349         struct list_head        blacklist;
 350         struct list_head        whitelist;
 351         struct list_head        uuids;
 352         struct list_head        link_keys;
 353         struct list_head        long_term_keys;
 354         struct list_head        identity_resolving_keys;
 355         struct list_head        remote_oob_data;
 356         struct list_head        le_white_list;
 357         struct list_head        le_conn_params;
 358         struct list_head        pend_le_conns;
 359         struct list_head        pend_le_reports;
 360
 361         struct hci_dev_stats    stat;
 362
 363         atomic_t                promisc;
 364
 365         struct dentry           *debugfs;
 366
 367         struct device           dev;
 368
 369         struct rfkill           *rfkill;
 370
 371         DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
 372
 373         struct delayed_work     le_scan_disable;
 374         struct delayed_work     le_scan_restart;
 375
 376         __s8                    adv_tx_power;
 377         __u8                    adv_data[HCI_MAX_AD_LENGTH];
 378         __u8                    adv_data_len;
 379         __u8                    scan_rsp_data[HCI_MAX_AD_LENGTH];
 380         __u8                    scan_rsp_data_len;
 381
 382         struct list_head        adv_instances;
 383         unsigned int            adv_instance_cnt;
 384         __u8                    cur_adv_instance;
 385         __u16                   adv_instance_timeout;
 386         struct delayed_work     adv_instance_expire;
 387
 388         __u8                    irk[16];
 389         __u32                   rpa_timeout;
 390         struct delayed_work     rpa_expired;
 391         bdaddr_t                rpa;
 392
 393         int (*open)(struct hci_dev *hdev);
 394         int (*close)(struct hci_dev *hdev);
 395         int (*flush)(struct hci_dev *hdev);
 396         int (*setup)(struct hci_dev *hdev);
 397         int (*shutdown)(struct hci_dev *hdev);
 398         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 399         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 400         void (*hw_error)(struct hci_dev *hdev, u8 code);
 401         int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 402 };
 403
 404 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 405
 406 struct hci_conn {
 407         struct list_head list;
 408
 409         atomic_t        refcnt;
 410
 411         bdaddr_t        dst;
 412         __u8            dst_type;
 413         bdaddr_t        src;
 414         __u8            src_type;
 415         bdaddr_t        init_addr;
 416         __u8            init_addr_type;
 417         bdaddr_t        resp_addr;
 418         __u8            resp_addr_type;
 419         __u16           handle;
 420         __u16           state;
 421         __u8            mode;
 422         __u8            type;
 423         __u8            role;
 424         bool            out;
 425         __u8            attempt;
 426         __u8            dev_class[3];
 427         __u8            features[HCI_MAX_PAGES][8];
 428         __u16           pkt_type;
 429         __u16           link_policy;
 430         __u8            key_type;
 431         __u8            auth_type;
 432         __u8            sec_level;
 433         __u8            pending_sec_level;
 434         __u8            pin_length;
 435         __u8            enc_key_size;
 436         __u8            io_capability;
 437         __u32           passkey_notify;
 438         __u8            passkey_entered;
 439         __u16           disc_timeout;
 440         __u16           conn_timeout;
 441         __u16           setting;
 442         __u16           le_conn_min_interval;
 443         __u16           le_conn_max_interval;
 444         __u16           le_conn_interval;
 445         __u16           le_conn_latency;
 446         __u16           le_supv_timeout;
 447         __u8            le_adv_data[HCI_MAX_AD_LENGTH];
 448         __u8            le_adv_data_len;
 449         __s8            rssi;
 450         __s8            tx_power;
 451         __s8            max_tx_power;
 452         unsigned long   flags;
 453
 454         __u32           clock;
 455         __u16           clock_accuracy;
 456
 457         unsigned long   conn_info_timestamp;
 458
 459         __u8            remote_cap;
 460         __u8            remote_auth;
 461         __u8            remote_id;
 462
 463         unsigned int    sent;
 464
 465         struct sk_buff_head data_q;
 466         struct list_head chan_list;
 467
 468         struct delayed_work disc_work;
 469         struct delayed_work auto_accept_work;
 470         struct delayed_work idle_work;
 471         struct delayed_work le_conn_timeout;
 472
 473         struct device   dev;
 474         struct dentry   *debugfs;
 475
 476         struct hci_dev  *hdev;
 477         void            *l2cap_data;
 478         void            *sco_data;
 479         struct amp_mgr  *amp_mgr;
 480
 481         struct hci_conn *link;
 482
 483         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 484         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 485         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 486 };
 487
 488 struct hci_chan {
 489         struct list_head list;
 490         __u16 handle;
 491         struct hci_conn *conn;
 492         struct sk_buff_head data_q;
 493         unsigned int    sent;
 494         __u8            state;
 495 };
 496
 497 struct hci_conn_params {
 498         struct list_head list;
 499         struct list_head action;
 500
 501         bdaddr_t addr;
 502         u8 addr_type;
 503
 504         u16 conn_min_interval;
 505         u16 conn_max_interval;
 506         u16 conn_latency;
 507         u16 supervision_timeout;
 508
 509         enum {
 510                 HCI_AUTO_CONN_DISABLED,
 511                 HCI_AUTO_CONN_REPORT,
 512                 HCI_AUTO_CONN_DIRECT,
 513                 HCI_AUTO_CONN_ALWAYS,
 514                 HCI_AUTO_CONN_LINK_LOSS,
 515         } auto_connect;
 516
 517         struct hci_conn *conn;
 518 };
 519
 520 extern struct list_head hci_dev_list;
 521 extern struct list_head hci_cb_list;
 522 extern rwlock_t hci_dev_list_lock;
 523 extern struct mutex hci_cb_list_lock;
 524
 525 #define hci_dev_set_flag(hdev, nr)             set_bit((nr), (hdev)->dev_flags)
 526 #define hci_dev_clear_flag(hdev, nr)           clear_bit((nr), (hdev)->dev_flags)
 527 #define hci_dev_change_flag(hdev, nr)          change_bit((nr), (hdev)->dev_flags)
 528 #define hci_dev_test_flag(hdev, nr)            test_bit((nr), (hdev)->dev_flags)
 529 #define hci_dev_test_and_set_flag(hdev, nr)    test_and_set_bit((nr), (hdev)->dev_flags)
 530 #define hci_dev_test_and_clear_flag(hdev, nr)  test_and_clear_bit((nr), (hdev)->dev_flags)
 531 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
 532
 533 #define hci_dev_clear_volatile_flags(hdev)                      \
 534         do {                                                    \
 535                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);          \
 536                 hci_dev_clear_flag(hdev, HCI_LE_ADV);           \
 537                 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);     \
 538         } while (0)
 539
 540 /* ----- HCI interface to upper protocols ----- */
 541 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 542 int l2cap_disconn_ind(struct hci_conn *hcon);
 543 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 544
 545 #if IS_ENABLED(CONFIG_BT_BREDR)
 546 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 547 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 548 #else
 549 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 550                                   __u8 *flags)
 551 {
 552         return 0;
 553 }
 554
 555 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
 556 {
 557 }
 558 #endif
 559
 560 /* ----- Inquiry cache ----- */
 561 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 562 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 563
 564 static inline void discovery_init(struct hci_dev *hdev)
 565 {
 566         hdev->discovery.state = DISCOVERY_STOPPED;
 567         INIT_LIST_HEAD(&hdev->discovery.all);
 568         INIT_LIST_HEAD(&hdev->discovery.unknown);
 569         INIT_LIST_HEAD(&hdev->discovery.resolve);
 570         hdev->discovery.report_invalid_rssi = true;
 571         hdev->discovery.rssi = HCI_RSSI_INVALID;
 572 }
 573
 574 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 575 {
 576         hdev->discovery.result_filtering = false;
 577         hdev->discovery.report_invalid_rssi = true;
 578         hdev->discovery.rssi = HCI_RSSI_INVALID;
 579         hdev->discovery.uuid_count = 0;
 580         kfree(hdev->discovery.uuids);
 581         hdev->discovery.uuids = NULL;
 582         hdev->discovery.scan_start = 0;
 583         hdev->discovery.scan_duration = 0;
 584 }
 585
 586 bool hci_discovery_active(struct hci_dev *hdev);
 587
 588 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 589
 590 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 591 {
 592         return list_empty(&hdev->discovery.all);
 593 }
 594
 595 static inline long inquiry_cache_age(struct hci_dev *hdev)
 596 {
 597         struct discovery_state *c = &hdev->discovery;
 598         return jiffies - c->timestamp;
 599 }
 600
 601 static inline long inquiry_entry_age(struct inquiry_entry *e)
 602 {
 603         return jiffies - e->timestamp;
 604 }
 605
 606 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 607                                                bdaddr_t *bdaddr);
 608 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 609                                                        bdaddr_t *bdaddr);
 610 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 611                                                        bdaddr_t *bdaddr,
 612                                                        int state);
 613 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 614                                       struct inquiry_entry *ie);
 615 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 616                              bool name_known);
 617 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 618
 619 /* ----- HCI Connections ----- */
 620 enum {
 621         HCI_CONN_AUTH_PEND,
 622         HCI_CONN_REAUTH_PEND,
 623         HCI_CONN_ENCRYPT_PEND,
 624         HCI_CONN_RSWITCH_PEND,
 625         HCI_CONN_MODE_CHANGE_PEND,
 626         HCI_CONN_SCO_SETUP_PEND,
 627         HCI_CONN_MGMT_CONNECTED,
 628         HCI_CONN_SSP_ENABLED,
 629         HCI_CONN_SC_ENABLED,
 630         HCI_CONN_AES_CCM,
 631         HCI_CONN_POWER_SAVE,
 632         HCI_CONN_FLUSH_KEY,
 633         HCI_CONN_ENCRYPT,
 634         HCI_CONN_AUTH,
 635         HCI_CONN_SECURE,
 636         HCI_CONN_FIPS,
 637         HCI_CONN_STK_ENCRYPT,
 638         HCI_CONN_AUTH_INITIATOR,
 639         HCI_CONN_DROP,
 640         HCI_CONN_PARAM_REMOVAL_PEND,
 641         HCI_CONN_NEW_LINK_KEY,
 642 };
 643
 644 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 645 {
 646         struct hci_dev *hdev = conn->hdev;
 647         return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
 648                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 649 }
 650
 651 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
 652 {
 653         struct hci_dev *hdev = conn->hdev;
 654         return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
 655                test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
 656 }
 657
 658 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 659 {
 660         struct hci_conn_hash *h = &hdev->conn_hash;
 661         list_add_rcu(&c->list, &h->list);
 662         switch (c->type) {
 663         case ACL_LINK:
 664                 h->acl_num++;
 665                 break;
 666         case AMP_LINK:
 667                 h->amp_num++;
 668                 break;
 669         case LE_LINK:
 670                 h->le_num++;
 671                 if (c->role == HCI_ROLE_SLAVE)
 672                         h->le_num_slave++;
 673                 break;
 674         case SCO_LINK:
 675         case ESCO_LINK:
 676                 h->sco_num++;
 677                 break;
 678         }
 679 }
 680
 681 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 682 {
 683         struct hci_conn_hash *h = &hdev->conn_hash;
 684
 685         list_del_rcu(&c->list);
 686         synchronize_rcu();
 687
 688         switch (c->type) {
 689         case ACL_LINK:
 690                 h->acl_num--;
 691                 break;
 692         case AMP_LINK:
 693                 h->amp_num--;
 694                 break;
 695         case LE_LINK:
 696                 h->le_num--;
 697                 if (c->role == HCI_ROLE_SLAVE)
 698                         h->le_num_slave--;
 699                 break;
 700         case SCO_LINK:
 701         case ESCO_LINK:
 702                 h->sco_num--;
 703                 break;
 704         }
 705 }
 706
 707 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 708 {
 709         struct hci_conn_hash *h = &hdev->conn_hash;
 710         switch (type) {
 711         case ACL_LINK:
 712                 return h->acl_num;
 713         case AMP_LINK:
 714                 return h->amp_num;
 715         case LE_LINK:
 716                 return h->le_num;
 717         case SCO_LINK:
 718         case ESCO_LINK:
 719                 return h->sco_num;
 720         default:
 721                 return 0;
 722         }
 723 }
 724
 725 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
 726 {
 727         struct hci_conn_hash *c = &hdev->conn_hash;
 728
 729         return c->acl_num + c->amp_num + c->sco_num + c->le_num;
 730 }
 731
 732 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
 733 {
 734         struct hci_conn_hash *h = &hdev->conn_hash;
 735         struct hci_conn *c;
 736         __u8 type = INVALID_LINK;
 737
 738         rcu_read_lock();
 739
 740         list_for_each_entry_rcu(c, &h->list, list) {
 741                 if (c->handle == handle) {
 742                         type = c->type;
 743                         break;
 744                 }
 745         }
 746
 747         rcu_read_unlock();
 748
 749         return type;
 750 }
 751
 752 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 753                                                                 __u16 handle)
 754 {
 755         struct hci_conn_hash *h = &hdev->conn_hash;
 756         struct hci_conn  *c;
 757
 758         rcu_read_lock();
 759
 760         list_for_each_entry_rcu(c, &h->list, list) {
 761                 if (c->handle == handle) {
 762                         rcu_read_unlock();
 763                         return c;
 764                 }
 765         }
 766         rcu_read_unlock();
 767
 768         return NULL;
 769 }
 770
 771 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 772                                                         __u8 type, bdaddr_t *ba)
 773 {
 774         struct hci_conn_hash *h = &hdev->conn_hash;
 775         struct hci_conn  *c;
 776
 777         rcu_read_lock();
 778
 779         list_for_each_entry_rcu(c, &h->list, list) {
 780                 if (c->type == type && !bacmp(&c->dst, ba)) {
 781                         rcu_read_unlock();
 782                         return c;
 783                 }
 784         }
 785
 786         rcu_read_unlock();
 787
 788         return NULL;
 789 }
 790
 791 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 792                                                         __u8 type, __u16 state)
 793 {
 794         struct hci_conn_hash *h = &hdev->conn_hash;
 795         struct hci_conn  *c;
 796
 797         rcu_read_lock();
 798
 799         list_for_each_entry_rcu(c, &h->list, list) {
 800                 if (c->type == type && c->state == state) {
 801                         rcu_read_unlock();
 802                         return c;
 803                 }
 804         }
 805
 806         rcu_read_unlock();
 807
 808         return NULL;
 809 }
 810
 811 int hci_disconnect(struct hci_conn *conn, __u8 reason);
 812 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 813 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 814
 815 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
 816                               u8 role);
 817 int hci_conn_del(struct hci_conn *conn);
 818 void hci_conn_hash_flush(struct hci_dev *hdev);
 819 void hci_conn_check_pending(struct hci_dev *hdev);
 820
 821 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 822 void hci_chan_del(struct hci_chan *chan);
 823 void hci_chan_list_flush(struct hci_conn *conn);
 824 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 825
 826 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 827                                 u8 dst_type, u8 sec_level, u16 conn_timeout,
 828                                 u8 role);
 829 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
 830                                  u8 sec_level, u8 auth_type);
 831 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 832                                  __u16 setting);
 833 int hci_conn_check_link_mode(struct hci_conn *conn);
 834 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 835 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
 836                       bool initiator);
 837 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 838
 839 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 840
 841 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
 842
 843 /*
 844  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 845  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 846  * working or anything else. They just guarantee that the object is available
 847  * and can be dereferenced. So you can use its locks, local variables and any
 848  * other constant data.
 849  * Before accessing runtime data, you _must_ lock the object and then check that
 850  * it is still running. As soon as you release the locks, the connection might
 851  * get dropped, though.
 852  *
 853  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 854  * how long the underlying connection is held. So every channel that runs on the
 855  * hci_conn object calls this to prevent the connection from disappearing. As
 856  * long as you hold a device, you must also guarantee that you have a valid
 857  * reference to the device via hci_conn_get() (or the initial reference from
 858  * hci_conn_add()).
 859  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 860  * break because nobody cares for that. But this means, we cannot use
 861  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 862  */
 863
 864 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
 865 {
 866         get_device(&conn->dev);
 867         return conn;
 868 }
 869
 870 static inline void hci_conn_put(struct hci_conn *conn)
 871 {
 872         put_device(&conn->dev);
 873 }
 874
 875 static inline void hci_conn_hold(struct hci_conn *conn)
 876 {
 877         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 878
 879         atomic_inc(&conn->refcnt);
 880         cancel_delayed_work(&conn->disc_work);
 881 }
 882
 883 static inline void hci_conn_drop(struct hci_conn *conn)
 884 {
 885         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 886
 887         if (atomic_dec_and_test(&conn->refcnt)) {
 888                 unsigned long timeo;
 889
 890                 switch (conn->type) {
 891                 case ACL_LINK:
 892                 case LE_LINK:
 893                         cancel_delayed_work(&conn->idle_work);
 894                         if (conn->state == BT_CONNECTED) {
 895                                 timeo = conn->disc_timeout;
 896                                 if (!conn->out)
 897                                         timeo *= 2;
 898                         } else {
 899                                 timeo = 0;
 900                         }
 901                         break;
 902
 903                 case AMP_LINK:
 904                         timeo = conn->disc_timeout;
 905                         break;
 906
 907                 default:
 908                         timeo = 0;
 909                         break;
 910                 }
 911
 912                 cancel_delayed_work(&conn->disc_work);
 913                 queue_delayed_work(conn->hdev->workqueue,
 914                                    &conn->disc_work, timeo);
 915         }
 916 }
 917
 918 /* ----- HCI Devices ----- */
 919 static inline void hci_dev_put(struct hci_dev *d)
 920 {
 921         BT_DBG("%s orig refcnt %d", d->name,
 922                atomic_read(&d->dev.kobj.kref.refcount));
 923
 924         put_device(&d->dev);
 925 }
 926
 927 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 928 {
 929         BT_DBG("%s orig refcnt %d", d->name,
 930                atomic_read(&d->dev.kobj.kref.refcount));
 931
 932         get_device(&d->dev);
 933         return d;
 934 }
 935
 936 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 937 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 938
 939 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 940 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 941
 942 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 943 {
 944         return dev_get_drvdata(&hdev->dev);
 945 }
 946
 947 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 948 {
 949         dev_set_drvdata(&hdev->dev, data);
 950 }
 951
 952 struct hci_dev *hci_dev_get(int index);
 953 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
 954
 955 struct hci_dev *hci_alloc_dev(void);
 956 void hci_free_dev(struct hci_dev *hdev);
 957 int hci_register_dev(struct hci_dev *hdev);
 958 void hci_unregister_dev(struct hci_dev *hdev);
 959 int hci_suspend_dev(struct hci_dev *hdev);
 960 int hci_resume_dev(struct hci_dev *hdev);
 961 int hci_reset_dev(struct hci_dev *hdev);
 962 int hci_dev_open(__u16 dev);
 963 int hci_dev_close(__u16 dev);
 964 int hci_dev_reset(__u16 dev);
 965 int hci_dev_reset_stat(__u16 dev);
 966 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 967 int hci_get_dev_list(void __user *arg);
 968 int hci_get_dev_info(void __user *arg);
 969 int hci_get_conn_list(void __user *arg);
 970 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 971 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 972 int hci_inquiry(void __user *arg);
 973
 974 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
 975                                            bdaddr_t *bdaddr, u8 type);
 976 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
 977 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
 978 void hci_bdaddr_list_clear(struct list_head *list);
 979
 980 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
 981                                                bdaddr_t *addr, u8 addr_type);
 982 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
 983                                             bdaddr_t *addr, u8 addr_type);
 984 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
 985 void hci_conn_params_clear_all(struct hci_dev *hdev);
 986 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
 987
 988 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
 989                                                   bdaddr_t *addr,
 990                                                   u8 addr_type);
 991
 992 void hci_uuids_clear(struct hci_dev *hdev);
 993
 994 void hci_link_keys_clear(struct hci_dev *hdev);
 995 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 996 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
 997                                   bdaddr_t *bdaddr, u8 *val, u8 type,
 998                                   u8 pin_len, bool *persistent);
 999 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1000                             u8 addr_type, u8 type, u8 authenticated,
1001                             u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1002 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1003                              u8 addr_type, u8 role);
1004 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1005 void hci_smp_ltks_clear(struct hci_dev *hdev);
1006 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1007
1008 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1009 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1010                                      u8 addr_type);
1011 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1012                             u8 addr_type, u8 val[16], bdaddr_t *rpa);
1013 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1014 void hci_smp_irks_clear(struct hci_dev *hdev);
1015
1016 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1017
1018 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1019 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1020                                           bdaddr_t *bdaddr, u8 bdaddr_type);
1021 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1022                             u8 bdaddr_type, u8 *hash192, u8 *rand192,
1023                             u8 *hash256, u8 *rand256);
1024 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1025                                u8 bdaddr_type);
1026
1027 void hci_adv_instances_clear(struct hci_dev *hdev);
1028 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1029 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1030 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1031                          u16 adv_data_len, u8 *adv_data,
1032                          u16 scan_rsp_len, u8 *scan_rsp_data,
1033                          u16 timeout, u16 duration);
1034 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1035
1036 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1037
1038 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1039
1040 void hci_init_sysfs(struct hci_dev *hdev);
1041 void hci_conn_init_sysfs(struct hci_conn *conn);
1042 void hci_conn_add_sysfs(struct hci_conn *conn);
1043 void hci_conn_del_sysfs(struct hci_conn *conn);
1044
1045 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1046
1047 /* ----- LMP capabilities ----- */
1048 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
1049 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
1050 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
1051 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
1052 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
1053 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
1054 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
1055 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
1056 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
1057 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1058 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1059 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
1060 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1061 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1062 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
1063 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1064 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1065 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1066 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1067
1068 /* ----- Extended LMP capabilities ----- */
1069 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1070 #define lmp_csb_slave_capable(dev)  ((dev)->features[2][0] & LMP_CSB_SLAVE)
1071 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1072 #define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1073 #define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1074 #define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1075
1076 /* ----- Host capabilities ----- */
1077 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1078 #define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1079 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1080 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1081
1082 #define hdev_is_powered(dev)   (test_bit(HCI_UP, &(dev)->flags) && \
1083                                 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1084 #define bredr_sc_enabled(dev)  (lmp_sc_capable(dev) && \
1085                                 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1086
1087 /* ----- HCI protocols ----- */
1088 #define HCI_PROTO_DEFER             0x01
1089
1090 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1091                                         __u8 type, __u8 *flags)
1092 {
1093         switch (type) {
1094         case ACL_LINK:
1095                 return l2cap_connect_ind(hdev, bdaddr);
1096
1097         case SCO_LINK:
1098         case ESCO_LINK:
1099                 return sco_connect_ind(hdev, bdaddr, flags);
1100
1101         default:
1102                 BT_ERR("unknown link type %d", type);
1103                 return -EINVAL;
1104         }
1105 }
1106
1107 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1108 {
1109         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1110                 return HCI_ERROR_REMOTE_USER_TERM;
1111
1112         return l2cap_disconn_ind(conn);
1113 }
1114
1115 /* ----- HCI callbacks ----- */
1116 struct hci_cb {
1117         struct list_head list;
1118
1119         char *name;
1120
1121         void (*connect_cfm)     (struct hci_conn *conn, __u8 status);
1122         void (*disconn_cfm)     (struct hci_conn *conn, __u8 status);
1123         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
1124                                                                 __u8 encrypt);
1125         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
1126         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1127 };
1128
1129 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1130 {
1131         struct hci_cb *cb;
1132
1133         mutex_lock(&hci_cb_list_lock);
1134         list_for_each_entry(cb, &hci_cb_list, list) {
1135                 if (cb->connect_cfm)
1136                         cb->connect_cfm(conn, status);
1137         }
1138         mutex_unlock(&hci_cb_list_lock);
1139
1140         if (conn->connect_cfm_cb)
1141                 conn->connect_cfm_cb(conn, status);
1142 }
1143
1144 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1145 {
1146         struct hci_cb *cb;
1147
1148         mutex_lock(&hci_cb_list_lock);
1149         list_for_each_entry(cb, &hci_cb_list, list) {
1150                 if (cb->disconn_cfm)
1151                         cb->disconn_cfm(conn, reason);
1152         }
1153         mutex_unlock(&hci_cb_list_lock);
1154
1155         if (conn->disconn_cfm_cb)
1156                 conn->disconn_cfm_cb(conn, reason);
1157 }
1158
1159 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1160 {
1161         struct hci_cb *cb;
1162         __u8 encrypt;
1163
1164         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1165                 return;
1166
1167         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1168
1169         mutex_lock(&hci_cb_list_lock);
1170         list_for_each_entry(cb, &hci_cb_list, list) {
1171                 if (cb->security_cfm)
1172                         cb->security_cfm(conn, status, encrypt);
1173         }
1174         mutex_unlock(&hci_cb_list_lock);
1175
1176         if (conn->security_cfm_cb)
1177                 conn->security_cfm_cb(conn, status);
1178 }
1179
1180 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1181                                                                 __u8 encrypt)
1182 {
1183         struct hci_cb *cb;
1184
1185         if (conn->sec_level == BT_SECURITY_SDP)
1186                 conn->sec_level = BT_SECURITY_LOW;
1187
1188         if (conn->pending_sec_level > conn->sec_level)
1189                 conn->sec_level = conn->pending_sec_level;
1190
1191         mutex_lock(&hci_cb_list_lock);
1192         list_for_each_entry(cb, &hci_cb_list, list) {
1193                 if (cb->security_cfm)
1194                         cb->security_cfm(conn, status, encrypt);
1195         }
1196         mutex_unlock(&hci_cb_list_lock);
1197
1198         if (conn->security_cfm_cb)
1199                 conn->security_cfm_cb(conn, status);
1200 }
1201
1202 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1203 {
1204         struct hci_cb *cb;
1205
1206         mutex_lock(&hci_cb_list_lock);
1207         list_for_each_entry(cb, &hci_cb_list, list) {
1208                 if (cb->key_change_cfm)
1209                         cb->key_change_cfm(conn, status);
1210         }
1211         mutex_unlock(&hci_cb_list_lock);
1212 }
1213
1214 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1215                                                                 __u8 role)
1216 {
1217         struct hci_cb *cb;
1218
1219         mutex_lock(&hci_cb_list_lock);
1220         list_for_each_entry(cb, &hci_cb_list, list) {
1221                 if (cb->role_switch_cfm)
1222                         cb->role_switch_cfm(conn, status, role);
1223         }
1224         mutex_unlock(&hci_cb_list_lock);
1225 }
1226
1227 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1228 {
1229         size_t parsed = 0;
1230
1231         if (data_len < 2)
1232                 return false;
1233
1234         while (parsed < data_len - 1) {
1235                 u8 field_len = data[0];
1236
1237                 if (field_len == 0)
1238                         break;
1239
1240                 parsed += field_len + 1;
1241
1242                 if (parsed > data_len)
1243                         break;
1244
1245                 if (data[1] == type)
1246                         return true;
1247
1248                 data += field_len + 1;
1249         }
1250
1251         return false;
1252 }
1253
1254 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1255 {
1256         if (addr_type != ADDR_LE_DEV_RANDOM)
1257                 return false;
1258
1259         if ((bdaddr->b[5] & 0xc0) == 0x40)
1260                return true;
1261
1262         return false;
1263 }
1264
1265 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1266 {
1267         if (addr_type == ADDR_LE_DEV_PUBLIC)
1268                 return true;
1269
1270         /* Check for Random Static address type */
1271         if ((addr->b[5] & 0xc0) == 0xc0)
1272                 return true;
1273
1274         return false;
1275 }
1276
1277 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1278                                           bdaddr_t *bdaddr, u8 addr_type)
1279 {
1280         if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1281                 return NULL;
1282
1283         return hci_find_irk_by_rpa(hdev, bdaddr);
1284 }
1285
1286 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1287                                         u16 to_multiplier)
1288 {
1289         u16 max_latency;
1290
1291         if (min > max || min < 6 || max > 3200)
1292                 return -EINVAL;
1293
1294         if (to_multiplier < 10 || to_multiplier > 3200)
1295                 return -EINVAL;
1296
1297         if (max >= to_multiplier * 8)
1298                 return -EINVAL;
1299
1300         max_latency = (to_multiplier * 8 / max) - 1;
1301         if (latency > 499 || latency > max_latency)
1302                 return -EINVAL;
1303
1304         return 0;
1305 }
1306
1307 int hci_register_cb(struct hci_cb *hcb);
1308 int hci_unregister_cb(struct hci_cb *hcb);
1309
1310 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1311                                const void *param, u32 timeout);
1312 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1313                                   const void *param, u8 event, u32 timeout);
1314
1315 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1316                  const void *param);
1317 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1318 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1319
1320 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1321
1322 /* ----- HCI Sockets ----- */
1323 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1324 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1325                          int flag, struct sock *skip_sk);
1326 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1327
1328 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1329
1330 #define HCI_MGMT_VAR_LEN        BIT(0)
1331 #define HCI_MGMT_NO_HDEV        BIT(1)
1332 #define HCI_MGMT_UNTRUSTED      BIT(2)
1333 #define HCI_MGMT_UNCONFIGURED   BIT(3)
1334
1335 struct hci_mgmt_handler {
1336         int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1337                      u16 data_len);
1338         size_t data_len;
1339         unsigned long flags;
1340 };
1341
1342 struct hci_mgmt_chan {
1343         struct list_head list;
1344         unsigned short channel;
1345         size_t handler_count;
1346         const struct hci_mgmt_handler *handlers;
1347         void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1348 };
1349
1350 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1351 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1352
1353 /* Management interface */
1354 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1355 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1356                                          BIT(BDADDR_LE_RANDOM))
1357 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1358                                          BIT(BDADDR_LE_PUBLIC) | \
1359                                          BIT(BDADDR_LE_RANDOM))
1360
1361 /* These LE scan and inquiry parameters were chosen according to LE General
1362  * Discovery Procedure specification.
1363  */
1364 #define DISCOV_LE_SCAN_WIN              0x12
1365 #define DISCOV_LE_SCAN_INT              0x12
1366 #define DISCOV_LE_TIMEOUT               10240   /* msec */
1367 #define DISCOV_INTERLEAVED_TIMEOUT      5120    /* msec */
1368 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1369 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1370 #define DISCOV_LE_RESTART_DELAY         msecs_to_jiffies(200)   /* msec */
1371
1372 int mgmt_new_settings(struct hci_dev *hdev);
1373 void mgmt_index_added(struct hci_dev *hdev);
1374 void mgmt_index_removed(struct hci_dev *hdev);
1375 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1376 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1377 int mgmt_update_adv_data(struct hci_dev *hdev);
1378 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1379 void mgmt_adv_timeout_expired(struct hci_dev *hdev);
1380 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1381                        bool persistent);
1382 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1383                            u32 flags, u8 *name, u8 name_len);
1384 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1385                               u8 link_type, u8 addr_type, u8 reason,
1386                               bool mgmt_connected);
1387 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1388                             u8 link_type, u8 addr_type, u8 status);
1389 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1390                          u8 addr_type, u8 status);
1391 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1392 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1393                                   u8 status);
1394 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1395                                       u8 status);
1396 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1397                               u8 link_type, u8 addr_type, u32 value,
1398                               u8 confirm_hint);
1399 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1400                                      u8 link_type, u8 addr_type, u8 status);
1401 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1402                                          u8 link_type, u8 addr_type, u8 status);
1403 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1404                               u8 link_type, u8 addr_type);
1405 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1406                                      u8 link_type, u8 addr_type, u8 status);
1407 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1408                                          u8 link_type, u8 addr_type, u8 status);
1409 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1410                              u8 link_type, u8 addr_type, u32 passkey,
1411                              u8 entered);
1412 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1413 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1414 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1415 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1416                                     u8 status);
1417 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1418 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1419                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1420                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1421 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1422                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1423 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1424 bool mgmt_powering_down(struct hci_dev *hdev);
1425 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1426 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1427 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1428                    bool persistent);
1429 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1430                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
1431                          u16 max_interval, u16 latency, u16 timeout);
1432 void mgmt_reenable_advertising(struct hci_dev *hdev);
1433 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1434
1435 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1436                       u16 to_multiplier);
1437 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1438                       __u8 ltk[16], __u8 key_size);
1439
1440 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1441                                u8 *bdaddr_type);
1442
1443 #define SCO_AIRMODE_MASK       0x0003
1444 #define SCO_AIRMODE_CVSD       0x0000
1445 #define SCO_AIRMODE_TRANSP     0x0003
1446
1447 #endif /* __HCI_CORE_H */