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