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
  30 /* HCI priority */
  31 #define HCI_PRIO_MAX    7
  32
  33 /* HCI Core structures */
  34 struct inquiry_data {
  35         bdaddr_t        bdaddr;
  36         __u8            pscan_rep_mode;
  37         __u8            pscan_period_mode;
  38         __u8            pscan_mode;
  39         __u8            dev_class[3];
  40         __le16          clock_offset;
  41         __s8            rssi;
  42         __u8            ssp_mode;
  43 };
  44
  45 struct inquiry_entry {
  46         struct list_head        all;            /* inq_cache.all */
  47         struct list_head        list;           /* unknown or resolve */
  48         enum {
  49                 NAME_NOT_KNOWN,
  50                 NAME_NEEDED,
  51                 NAME_PENDING,
  52                 NAME_KNOWN,
  53         } name_state;
  54         __u32                   timestamp;
  55         struct inquiry_data     data;
  56 };
  57
  58 struct discovery_state {
  59         int                     type;
  60         enum {
  61                 DISCOVERY_STOPPED,
  62                 DISCOVERY_STARTING,
  63                 DISCOVERY_FINDING,
  64                 DISCOVERY_RESOLVING,
  65                 DISCOVERY_STOPPING,
  66         } state;
  67         struct list_head        all;    /* All devices found during inquiry */
  68         struct list_head        unknown;        /* Name state not known */
  69         struct list_head        resolve;        /* Name needs to be resolved */
  70         __u32                   timestamp;
  71 };
  72
  73 struct hci_conn_hash {
  74         struct list_head list;
  75         unsigned int     acl_num;
  76         unsigned int     amp_num;
  77         unsigned int     sco_num;
  78         unsigned int     le_num;
  79 };
  80
  81 struct bdaddr_list {
  82         struct list_head list;
  83         bdaddr_t bdaddr;
  84 };
  85
  86 struct bt_uuid {
  87         struct list_head list;
  88         u8 uuid[16];
  89         u8 size;
  90         u8 svc_hint;
  91 };
  92
  93 struct smp_ltk {
  94         struct list_head list;
  95         bdaddr_t bdaddr;
  96         u8 bdaddr_type;
  97         u8 authenticated;
  98         u8 type;
  99         u8 enc_size;
 100         __le16 ediv;
 101         u8 rand[8];
 102         u8 val[16];
 103 } __packed;
 104
 105 struct link_key {
 106         struct list_head list;
 107         bdaddr_t bdaddr;
 108         u8 type;
 109         u8 val[HCI_LINK_KEY_SIZE];
 110         u8 pin_len;
 111 };
 112
 113 struct oob_data {
 114         struct list_head list;
 115         bdaddr_t bdaddr;
 116         u8 hash[16];
 117         u8 randomizer[16];
 118 };
 119
 120 #define HCI_MAX_SHORT_NAME_LENGTH       10
 121
 122 struct amp_assoc {
 123         __u16   len;
 124         __u16   offset;
 125         __u16   rem_len;
 126         __u16   len_so_far;
 127         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
 128 };
 129
 130 #define HCI_MAX_PAGES   3
 131
 132 #define NUM_REASSEMBLY 4
 133 struct hci_dev {
 134         struct list_head list;
 135         struct mutex    lock;
 136
 137         char            name[8];
 138         unsigned long   flags;
 139         __u16           id;
 140         __u8            bus;
 141         __u8            dev_type;
 142         bdaddr_t        bdaddr;
 143         bdaddr_t        static_addr;
 144         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 145         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 146         __u8            eir[HCI_MAX_EIR_LENGTH];
 147         __u8            dev_class[3];
 148         __u8            major_class;
 149         __u8            minor_class;
 150         __u8            max_page;
 151         __u8            features[HCI_MAX_PAGES][8];
 152         __u8            le_features[8];
 153         __u8            le_white_list_size;
 154         __u8            le_states[8];
 155         __u8            commands[64];
 156         __u8            hci_ver;
 157         __u16           hci_rev;
 158         __u8            lmp_ver;
 159         __u16           manufacturer;
 160         __u16           lmp_subver;
 161         __u16           voice_setting;
 162         __u8            num_iac;
 163         __u8            io_capability;
 164         __s8            inq_tx_power;
 165         __u16           page_scan_interval;
 166         __u16           page_scan_window;
 167         __u8            page_scan_type;
 168         __u16           le_scan_interval;
 169         __u16           le_scan_window;
 170
 171         __u16           devid_source;
 172         __u16           devid_vendor;
 173         __u16           devid_product;
 174         __u16           devid_version;
 175
 176         __u16           pkt_type;
 177         __u16           esco_type;
 178         __u16           link_policy;
 179         __u16           link_mode;
 180
 181         __u32           idle_timeout;
 182         __u16           sniff_min_interval;
 183         __u16           sniff_max_interval;
 184
 185         __u8            amp_status;
 186         __u32           amp_total_bw;
 187         __u32           amp_max_bw;
 188         __u32           amp_min_latency;
 189         __u32           amp_max_pdu;
 190         __u8            amp_type;
 191         __u16           amp_pal_cap;
 192         __u16           amp_assoc_size;
 193         __u32           amp_max_flush_to;
 194         __u32           amp_be_flush_to;
 195
 196         struct amp_assoc        loc_assoc;
 197
 198         __u8            flow_ctl_mode;
 199
 200         unsigned int    auto_accept_delay;
 201
 202         unsigned long   quirks;
 203
 204         atomic_t        cmd_cnt;
 205         unsigned int    acl_cnt;
 206         unsigned int    sco_cnt;
 207         unsigned int    le_cnt;
 208
 209         unsigned int    acl_mtu;
 210         unsigned int    sco_mtu;
 211         unsigned int    le_mtu;
 212         unsigned int    acl_pkts;
 213         unsigned int    sco_pkts;
 214         unsigned int    le_pkts;
 215
 216         __u16           block_len;
 217         __u16           block_mtu;
 218         __u16           num_blocks;
 219         __u16           block_cnt;
 220
 221         unsigned long   acl_last_tx;
 222         unsigned long   sco_last_tx;
 223         unsigned long   le_last_tx;
 224
 225         struct workqueue_struct *workqueue;
 226         struct workqueue_struct *req_workqueue;
 227
 228         struct work_struct      power_on;
 229         struct delayed_work     power_off;
 230
 231         __u16                   discov_timeout;
 232         struct delayed_work     discov_off;
 233
 234         struct delayed_work     service_cache;
 235
 236         struct timer_list       cmd_timer;
 237
 238         struct work_struct      rx_work;
 239         struct work_struct      cmd_work;
 240         struct work_struct      tx_work;
 241
 242         struct sk_buff_head     rx_q;
 243         struct sk_buff_head     raw_q;
 244         struct sk_buff_head     cmd_q;
 245
 246         struct sk_buff          *recv_evt;
 247         struct sk_buff          *sent_cmd;
 248         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 249
 250         struct mutex            req_lock;
 251         wait_queue_head_t       req_wait_q;
 252         __u32                   req_status;
 253         __u32                   req_result;
 254
 255         struct list_head        mgmt_pending;
 256
 257         struct discovery_state  discovery;
 258         struct hci_conn_hash    conn_hash;
 259         struct list_head        blacklist;
 260
 261         struct list_head        uuids;
 262
 263         struct list_head        link_keys;
 264
 265         struct list_head        long_term_keys;
 266
 267         struct list_head        remote_oob_data;
 268
 269         struct hci_dev_stats    stat;
 270
 271         atomic_t                promisc;
 272
 273         struct dentry           *debugfs;
 274
 275         struct device           dev;
 276
 277         struct rfkill           *rfkill;
 278
 279         unsigned long           dev_flags;
 280
 281         struct delayed_work     le_scan_disable;
 282
 283         __s8                    adv_tx_power;
 284         __u8                    adv_data[HCI_MAX_AD_LENGTH];
 285         __u8                    adv_data_len;
 286
 287         int (*open)(struct hci_dev *hdev);
 288         int (*close)(struct hci_dev *hdev);
 289         int (*flush)(struct hci_dev *hdev);
 290         int (*setup)(struct hci_dev *hdev);
 291         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 292         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 293 };
 294
 295 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 296
 297 struct hci_conn {
 298         struct list_head list;
 299
 300         atomic_t        refcnt;
 301
 302         bdaddr_t        dst;
 303         __u8            dst_type;
 304         bdaddr_t        src;
 305         __u8            src_type;
 306         __u16           handle;
 307         __u16           state;
 308         __u8            mode;
 309         __u8            type;
 310         bool            out;
 311         __u8            attempt;
 312         __u8            dev_class[3];
 313         __u8            features[HCI_MAX_PAGES][8];
 314         __u16           interval;
 315         __u16           pkt_type;
 316         __u16           link_policy;
 317         __u32           link_mode;
 318         __u8            key_type;
 319         __u8            auth_type;
 320         __u8            sec_level;
 321         __u8            pending_sec_level;
 322         __u8            pin_length;
 323         __u8            enc_key_size;
 324         __u8            io_capability;
 325         __u32           passkey_notify;
 326         __u8            passkey_entered;
 327         __u16           disc_timeout;
 328         __u16           setting;
 329         unsigned long   flags;
 330
 331         __u8            remote_cap;
 332         __u8            remote_auth;
 333         __u8            remote_id;
 334         bool            flush_key;
 335
 336         unsigned int    sent;
 337
 338         struct sk_buff_head data_q;
 339         struct list_head chan_list;
 340
 341         struct delayed_work disc_work;
 342         struct timer_list idle_timer;
 343         struct timer_list auto_accept_timer;
 344
 345         struct device   dev;
 346
 347         struct hci_dev  *hdev;
 348         void            *l2cap_data;
 349         void            *sco_data;
 350         void            *smp_conn;
 351         struct amp_mgr  *amp_mgr;
 352
 353         struct hci_conn *link;
 354
 355         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 356         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 357         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 358 };
 359
 360 struct hci_chan {
 361         struct list_head list;
 362         __u16 handle;
 363         struct hci_conn *conn;
 364         struct sk_buff_head data_q;
 365         unsigned int    sent;
 366         __u8            state;
 367 };
 368
 369 extern struct list_head hci_dev_list;
 370 extern struct list_head hci_cb_list;
 371 extern rwlock_t hci_dev_list_lock;
 372 extern rwlock_t hci_cb_list_lock;
 373
 374 /* ----- HCI interface to upper protocols ----- */
 375 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 376 void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 377 int l2cap_disconn_ind(struct hci_conn *hcon);
 378 void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 379 int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 380 int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 381
 382 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 383 void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 384 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 385 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 386
 387 /* ----- Inquiry cache ----- */
 388 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 389 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 390
 391 static inline void discovery_init(struct hci_dev *hdev)
 392 {
 393         hdev->discovery.state = DISCOVERY_STOPPED;
 394         INIT_LIST_HEAD(&hdev->discovery.all);
 395         INIT_LIST_HEAD(&hdev->discovery.unknown);
 396         INIT_LIST_HEAD(&hdev->discovery.resolve);
 397 }
 398
 399 bool hci_discovery_active(struct hci_dev *hdev);
 400
 401 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 402
 403 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 404 {
 405         return list_empty(&hdev->discovery.all);
 406 }
 407
 408 static inline long inquiry_cache_age(struct hci_dev *hdev)
 409 {
 410         struct discovery_state *c = &hdev->discovery;
 411         return jiffies - c->timestamp;
 412 }
 413
 414 static inline long inquiry_entry_age(struct inquiry_entry *e)
 415 {
 416         return jiffies - e->timestamp;
 417 }
 418
 419 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 420                                                bdaddr_t *bdaddr);
 421 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 422                                                        bdaddr_t *bdaddr);
 423 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 424                                                        bdaddr_t *bdaddr,
 425                                                        int state);
 426 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 427                                       struct inquiry_entry *ie);
 428 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 429                               bool name_known, bool *ssp);
 430 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 431
 432 /* ----- HCI Connections ----- */
 433 enum {
 434         HCI_CONN_AUTH_PEND,
 435         HCI_CONN_REAUTH_PEND,
 436         HCI_CONN_ENCRYPT_PEND,
 437         HCI_CONN_RSWITCH_PEND,
 438         HCI_CONN_MODE_CHANGE_PEND,
 439         HCI_CONN_SCO_SETUP_PEND,
 440         HCI_CONN_LE_SMP_PEND,
 441         HCI_CONN_MGMT_CONNECTED,
 442         HCI_CONN_SSP_ENABLED,
 443         HCI_CONN_POWER_SAVE,
 444         HCI_CONN_REMOTE_OOB,
 445 };
 446
 447 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 448 {
 449         struct hci_dev *hdev = conn->hdev;
 450         return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 451                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 452 }
 453
 454 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 455 {
 456         struct hci_conn_hash *h = &hdev->conn_hash;
 457         list_add_rcu(&c->list, &h->list);
 458         switch (c->type) {
 459         case ACL_LINK:
 460                 h->acl_num++;
 461                 break;
 462         case AMP_LINK:
 463                 h->amp_num++;
 464                 break;
 465         case LE_LINK:
 466                 h->le_num++;
 467                 break;
 468         case SCO_LINK:
 469         case ESCO_LINK:
 470                 h->sco_num++;
 471                 break;
 472         }
 473 }
 474
 475 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 476 {
 477         struct hci_conn_hash *h = &hdev->conn_hash;
 478
 479         list_del_rcu(&c->list);
 480         synchronize_rcu();
 481
 482         switch (c->type) {
 483         case ACL_LINK:
 484                 h->acl_num--;
 485                 break;
 486         case AMP_LINK:
 487                 h->amp_num--;
 488                 break;
 489         case LE_LINK:
 490                 h->le_num--;
 491                 break;
 492         case SCO_LINK:
 493         case ESCO_LINK:
 494                 h->sco_num--;
 495                 break;
 496         }
 497 }
 498
 499 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 500 {
 501         struct hci_conn_hash *h = &hdev->conn_hash;
 502         switch (type) {
 503         case ACL_LINK:
 504                 return h->acl_num;
 505         case AMP_LINK:
 506                 return h->amp_num;
 507         case LE_LINK:
 508                 return h->le_num;
 509         case SCO_LINK:
 510         case ESCO_LINK:
 511                 return h->sco_num;
 512         default:
 513                 return 0;
 514         }
 515 }
 516
 517 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 518                                                                 __u16 handle)
 519 {
 520         struct hci_conn_hash *h = &hdev->conn_hash;
 521         struct hci_conn  *c;
 522
 523         rcu_read_lock();
 524
 525         list_for_each_entry_rcu(c, &h->list, list) {
 526                 if (c->handle == handle) {
 527                         rcu_read_unlock();
 528                         return c;
 529                 }
 530         }
 531         rcu_read_unlock();
 532
 533         return NULL;
 534 }
 535
 536 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 537                                                         __u8 type, bdaddr_t *ba)
 538 {
 539         struct hci_conn_hash *h = &hdev->conn_hash;
 540         struct hci_conn  *c;
 541
 542         rcu_read_lock();
 543
 544         list_for_each_entry_rcu(c, &h->list, list) {
 545                 if (c->type == type && !bacmp(&c->dst, ba)) {
 546                         rcu_read_unlock();
 547                         return c;
 548                 }
 549         }
 550
 551         rcu_read_unlock();
 552
 553         return NULL;
 554 }
 555
 556 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 557                                                         __u8 type, __u16 state)
 558 {
 559         struct hci_conn_hash *h = &hdev->conn_hash;
 560         struct hci_conn  *c;
 561
 562         rcu_read_lock();
 563
 564         list_for_each_entry_rcu(c, &h->list, list) {
 565                 if (c->type == type && c->state == state) {
 566                         rcu_read_unlock();
 567                         return c;
 568                 }
 569         }
 570
 571         rcu_read_unlock();
 572
 573         return NULL;
 574 }
 575
 576 void hci_disconnect(struct hci_conn *conn, __u8 reason);
 577 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 578 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 579
 580 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 581 int hci_conn_del(struct hci_conn *conn);
 582 void hci_conn_hash_flush(struct hci_dev *hdev);
 583 void hci_conn_check_pending(struct hci_dev *hdev);
 584
 585 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 586 void hci_chan_del(struct hci_chan *chan);
 587 void hci_chan_list_flush(struct hci_conn *conn);
 588 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 589
 590 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 591                              __u8 dst_type, __u8 sec_level, __u8 auth_type);
 592 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 593                                  __u16 setting);
 594 int hci_conn_check_link_mode(struct hci_conn *conn);
 595 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 596 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 597 int hci_conn_change_link_key(struct hci_conn *conn);
 598 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 599
 600 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 601
 602 /*
 603  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 604  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 605  * working or anything else. They just guarantee that the object is available
 606  * and can be dereferenced. So you can use its locks, local variables and any
 607  * other constant data.
 608  * Before accessing runtime data, you _must_ lock the object and then check that
 609  * it is still running. As soon as you release the locks, the connection might
 610  * get dropped, though.
 611  *
 612  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 613  * how long the underlying connection is held. So every channel that runs on the
 614  * hci_conn object calls this to prevent the connection from disappearing. As
 615  * long as you hold a device, you must also guarantee that you have a valid
 616  * reference to the device via hci_conn_get() (or the initial reference from
 617  * hci_conn_add()).
 618  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 619  * break because nobody cares for that. But this means, we cannot use
 620  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 621  */
 622
 623 static inline void hci_conn_get(struct hci_conn *conn)
 624 {
 625         get_device(&conn->dev);
 626 }
 627
 628 static inline void hci_conn_put(struct hci_conn *conn)
 629 {
 630         put_device(&conn->dev);
 631 }
 632
 633 static inline void hci_conn_hold(struct hci_conn *conn)
 634 {
 635         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 636
 637         atomic_inc(&conn->refcnt);
 638         cancel_delayed_work(&conn->disc_work);
 639 }
 640
 641 static inline void hci_conn_drop(struct hci_conn *conn)
 642 {
 643         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 644
 645         if (atomic_dec_and_test(&conn->refcnt)) {
 646                 unsigned long timeo;
 647
 648                 switch (conn->type) {
 649                 case ACL_LINK:
 650                 case LE_LINK:
 651                         del_timer(&conn->idle_timer);
 652                         if (conn->state == BT_CONNECTED) {
 653                                 timeo = conn->disc_timeout;
 654                                 if (!conn->out)
 655                                         timeo *= 2;
 656                         } else {
 657                                 timeo = msecs_to_jiffies(10);
 658                         }
 659                         break;
 660
 661                 case AMP_LINK:
 662                         timeo = conn->disc_timeout;
 663                         break;
 664
 665                 default:
 666                         timeo = msecs_to_jiffies(10);
 667                         break;
 668                 }
 669
 670                 cancel_delayed_work(&conn->disc_work);
 671                 queue_delayed_work(conn->hdev->workqueue,
 672                                    &conn->disc_work, timeo);
 673         }
 674 }
 675
 676 /* ----- HCI Devices ----- */
 677 static inline void hci_dev_put(struct hci_dev *d)
 678 {
 679         BT_DBG("%s orig refcnt %d", d->name,
 680                atomic_read(&d->dev.kobj.kref.refcount));
 681
 682         put_device(&d->dev);
 683 }
 684
 685 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 686 {
 687         BT_DBG("%s orig refcnt %d", d->name,
 688                atomic_read(&d->dev.kobj.kref.refcount));
 689
 690         get_device(&d->dev);
 691         return d;
 692 }
 693
 694 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 695 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 696
 697 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 698 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 699
 700 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 701 {
 702         return dev_get_drvdata(&hdev->dev);
 703 }
 704
 705 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 706 {
 707         dev_set_drvdata(&hdev->dev, data);
 708 }
 709
 710 struct hci_dev *hci_dev_get(int index);
 711 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
 712
 713 struct hci_dev *hci_alloc_dev(void);
 714 void hci_free_dev(struct hci_dev *hdev);
 715 int hci_register_dev(struct hci_dev *hdev);
 716 void hci_unregister_dev(struct hci_dev *hdev);
 717 int hci_suspend_dev(struct hci_dev *hdev);
 718 int hci_resume_dev(struct hci_dev *hdev);
 719 int hci_dev_open(__u16 dev);
 720 int hci_dev_close(__u16 dev);
 721 int hci_dev_reset(__u16 dev);
 722 int hci_dev_reset_stat(__u16 dev);
 723 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 724 int hci_get_dev_list(void __user *arg);
 725 int hci_get_dev_info(void __user *arg);
 726 int hci_get_conn_list(void __user *arg);
 727 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 728 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 729 int hci_inquiry(void __user *arg);
 730
 731 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
 732                                          bdaddr_t *bdaddr);
 733 int hci_blacklist_clear(struct hci_dev *hdev);
 734 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 735 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 736
 737 int hci_uuids_clear(struct hci_dev *hdev);
 738
 739 int hci_link_keys_clear(struct hci_dev *hdev);
 740 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 741 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 742                      bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 743 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 744 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
 745                 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
 746                 __le16 ediv, u8 rand[8]);
 747 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 748                                      u8 addr_type);
 749 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
 750 int hci_smp_ltks_clear(struct hci_dev *hdev);
 751 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 752
 753 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 754 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 755                                                         bdaddr_t *bdaddr);
 756 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 757                                                                 u8 *randomizer);
 758 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 759
 760 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 761
 762 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
 763 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 764 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 765
 766 void hci_init_sysfs(struct hci_dev *hdev);
 767 int hci_add_sysfs(struct hci_dev *hdev);
 768 void hci_del_sysfs(struct hci_dev *hdev);
 769 void hci_conn_init_sysfs(struct hci_conn *conn);
 770 void hci_conn_add_sysfs(struct hci_conn *conn);
 771 void hci_conn_del_sysfs(struct hci_conn *conn);
 772
 773 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
 774
 775 /* ----- LMP capabilities ----- */
 776 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
 777 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
 778 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
 779 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
 780 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
 781 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
 782 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
 783 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
 784 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
 785 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
 786 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
 787 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
 788 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
 789 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
 790 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
 791 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
 792 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
 793 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
 794 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
 795
 796 /* ----- Extended LMP capabilities ----- */
 797 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
 798 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
 799 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
 800
 801 /* ----- HCI protocols ----- */
 802 #define HCI_PROTO_DEFER             0x01
 803
 804 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 805                                         __u8 type, __u8 *flags)
 806 {
 807         switch (type) {
 808         case ACL_LINK:
 809                 return l2cap_connect_ind(hdev, bdaddr);
 810
 811         case SCO_LINK:
 812         case ESCO_LINK:
 813                 return sco_connect_ind(hdev, bdaddr, flags);
 814
 815         default:
 816                 BT_ERR("unknown link type %d", type);
 817                 return -EINVAL;
 818         }
 819 }
 820
 821 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 822 {
 823         switch (conn->type) {
 824         case ACL_LINK:
 825         case LE_LINK:
 826                 l2cap_connect_cfm(conn, status);
 827                 break;
 828
 829         case SCO_LINK:
 830         case ESCO_LINK:
 831                 sco_connect_cfm(conn, status);
 832                 break;
 833
 834         default:
 835                 BT_ERR("unknown link type %d", conn->type);
 836                 break;
 837         }
 838
 839         if (conn->connect_cfm_cb)
 840                 conn->connect_cfm_cb(conn, status);
 841 }
 842
 843 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 844 {
 845         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 846                 return HCI_ERROR_REMOTE_USER_TERM;
 847
 848         return l2cap_disconn_ind(conn);
 849 }
 850
 851 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 852 {
 853         switch (conn->type) {
 854         case ACL_LINK:
 855         case LE_LINK:
 856                 l2cap_disconn_cfm(conn, reason);
 857                 break;
 858
 859         case SCO_LINK:
 860         case ESCO_LINK:
 861                 sco_disconn_cfm(conn, reason);
 862                 break;
 863
 864         /* L2CAP would be handled for BREDR chan */
 865         case AMP_LINK:
 866                 break;
 867
 868         default:
 869                 BT_ERR("unknown link type %d", conn->type);
 870                 break;
 871         }
 872
 873         if (conn->disconn_cfm_cb)
 874                 conn->disconn_cfm_cb(conn, reason);
 875 }
 876
 877 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 878 {
 879         __u8 encrypt;
 880
 881         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 882                 return;
 883
 884         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 885                 return;
 886
 887         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 888         l2cap_security_cfm(conn, status, encrypt);
 889
 890         if (conn->security_cfm_cb)
 891                 conn->security_cfm_cb(conn, status);
 892 }
 893
 894 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 895                                                                 __u8 encrypt)
 896 {
 897         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 898                 return;
 899
 900         l2cap_security_cfm(conn, status, encrypt);
 901
 902         if (conn->security_cfm_cb)
 903                 conn->security_cfm_cb(conn, status);
 904 }
 905
 906 /* ----- HCI callbacks ----- */
 907 struct hci_cb {
 908         struct list_head list;
 909
 910         char *name;
 911
 912         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 913                                                                 __u8 encrypt);
 914         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 915         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 916 };
 917
 918 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 919 {
 920         struct hci_cb *cb;
 921         __u8 encrypt;
 922
 923         hci_proto_auth_cfm(conn, status);
 924
 925         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 926                 return;
 927
 928         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 929
 930         read_lock(&hci_cb_list_lock);
 931         list_for_each_entry(cb, &hci_cb_list, list) {
 932                 if (cb->security_cfm)
 933                         cb->security_cfm(conn, status, encrypt);
 934         }
 935         read_unlock(&hci_cb_list_lock);
 936 }
 937
 938 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 939                                                                 __u8 encrypt)
 940 {
 941         struct hci_cb *cb;
 942
 943         if (conn->sec_level == BT_SECURITY_SDP)
 944                 conn->sec_level = BT_SECURITY_LOW;
 945
 946         if (conn->pending_sec_level > conn->sec_level)
 947                 conn->sec_level = conn->pending_sec_level;
 948
 949         hci_proto_encrypt_cfm(conn, status, encrypt);
 950
 951         read_lock(&hci_cb_list_lock);
 952         list_for_each_entry(cb, &hci_cb_list, list) {
 953                 if (cb->security_cfm)
 954                         cb->security_cfm(conn, status, encrypt);
 955         }
 956         read_unlock(&hci_cb_list_lock);
 957 }
 958
 959 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 960 {
 961         struct hci_cb *cb;
 962
 963         read_lock(&hci_cb_list_lock);
 964         list_for_each_entry(cb, &hci_cb_list, list) {
 965                 if (cb->key_change_cfm)
 966                         cb->key_change_cfm(conn, status);
 967         }
 968         read_unlock(&hci_cb_list_lock);
 969 }
 970
 971 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 972                                                                 __u8 role)
 973 {
 974         struct hci_cb *cb;
 975
 976         read_lock(&hci_cb_list_lock);
 977         list_for_each_entry(cb, &hci_cb_list, list) {
 978                 if (cb->role_switch_cfm)
 979                         cb->role_switch_cfm(conn, status, role);
 980         }
 981         read_unlock(&hci_cb_list_lock);
 982 }
 983
 984 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
 985 {
 986         size_t parsed = 0;
 987
 988         if (data_len < 2)
 989                 return false;
 990
 991         while (parsed < data_len - 1) {
 992                 u8 field_len = data[0];
 993
 994                 if (field_len == 0)
 995                         break;
 996
 997                 parsed += field_len + 1;
 998
 999                 if (parsed > data_len)
1000                         break;
1001
1002                 if (data[1] == type)
1003                         return true;
1004
1005                 data += field_len + 1;
1006         }
1007
1008         return false;
1009 }
1010
1011 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
1012 {
1013         size_t parsed = 0;
1014
1015         while (parsed < eir_len) {
1016                 u8 field_len = eir[0];
1017
1018                 if (field_len == 0)
1019                         return parsed;
1020
1021                 parsed += field_len + 1;
1022                 eir += field_len + 1;
1023         }
1024
1025         return eir_len;
1026 }
1027
1028 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1029                                   u8 data_len)
1030 {
1031         eir[eir_len++] = sizeof(type) + data_len;
1032         eir[eir_len++] = type;
1033         memcpy(&eir[eir_len], data, data_len);
1034         eir_len += data_len;
1035
1036         return eir_len;
1037 }
1038
1039 int hci_register_cb(struct hci_cb *hcb);
1040 int hci_unregister_cb(struct hci_cb *hcb);
1041
1042 struct hci_request {
1043         struct hci_dev          *hdev;
1044         struct sk_buff_head     cmd_q;
1045
1046         /* If something goes wrong when building the HCI request, the error
1047          * value is stored in this field.
1048          */
1049         int                     err;
1050 };
1051
1052 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1053 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1054 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1055                  const void *param);
1056 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1057                     const void *param, u8 event);
1058 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1059
1060 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1061                                const void *param, u32 timeout);
1062 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1063                                   const void *param, u8 event, u32 timeout);
1064
1065 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1066                  const void *param);
1067 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1068 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1069
1070 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1071
1072 /* ----- HCI Sockets ----- */
1073 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1074 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1075 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1076
1077 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1078
1079 /* Management interface */
1080 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1081 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1082                                          BIT(BDADDR_LE_RANDOM))
1083 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1084                                          BIT(BDADDR_LE_PUBLIC) | \
1085                                          BIT(BDADDR_LE_RANDOM))
1086
1087 /* These LE scan and inquiry parameters were chosen according to LE General
1088  * Discovery Procedure specification.
1089  */
1090 #define DISCOV_LE_SCAN_WIN              0x12
1091 #define DISCOV_LE_SCAN_INT              0x12
1092 #define DISCOV_LE_TIMEOUT               msecs_to_jiffies(10240)
1093 #define DISCOV_INTERLEAVED_TIMEOUT      msecs_to_jiffies(5120)
1094 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1095 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1096
1097 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1098 void mgmt_index_added(struct hci_dev *hdev);
1099 void mgmt_index_removed(struct hci_dev *hdev);
1100 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1101 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1102 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1103 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1104 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1105 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1106                       bool persistent);
1107 void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1108                            u8 addr_type, u32 flags, u8 *name, u8 name_len,
1109                            u8 *dev_class);
1110 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1111                               u8 link_type, u8 addr_type, u8 reason);
1112 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1113                             u8 link_type, u8 addr_type, u8 status);
1114 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1115                          u8 addr_type, u8 status);
1116 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1117 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1118                                  u8 status);
1119 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1120                                      u8 status);
1121 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1122                               u8 link_type, u8 addr_type, __le32 value,
1123                               u8 confirm_hint);
1124 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1125                                      u8 link_type, u8 addr_type, u8 status);
1126 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1127                                          u8 link_type, u8 addr_type, u8 status);
1128 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1129                               u8 link_type, u8 addr_type);
1130 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1131                                      u8 link_type, u8 addr_type, u8 status);
1132 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1133                                          u8 link_type, u8 addr_type, u8 status);
1134 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1135                              u8 link_type, u8 addr_type, u32 passkey,
1136                              u8 entered);
1137 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1138                      u8 addr_type, u8 status);
1139 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1140 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1141 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1142                                    u8 status);
1143 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1144 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1145                                             u8 *randomizer, u8 status);
1146 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1147                        u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1148                        u8 ssp, u8 *eir, u16 eir_len);
1149 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1150                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1151 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1152 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1153 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1154 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1155 void mgmt_reenable_advertising(struct hci_dev *hdev);
1156
1157 /* HCI info for socket */
1158 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1159
1160 struct hci_pinfo {
1161         struct bt_sock    bt;
1162         struct hci_dev    *hdev;
1163         struct hci_filter filter;
1164         __u32             cmsg_mask;
1165         unsigned short   channel;
1166 };
1167
1168 /* HCI security filter */
1169 #define HCI_SFLT_MAX_OGF  5
1170
1171 struct hci_sec_filter {
1172         __u32 type_mask;
1173         __u32 event_mask[2];
1174         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1175 };
1176
1177 /* ----- HCI requests ----- */
1178 #define HCI_REQ_DONE      0
1179 #define HCI_REQ_PEND      1
1180 #define HCI_REQ_CANCELED  2
1181
1182 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
1183 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
1184
1185 void hci_update_ad(struct hci_request *req);
1186
1187 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1188                                         u16 latency, u16 to_multiplier);
1189 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1190                                                         __u8 ltk[16]);
1191
1192 #define SCO_AIRMODE_MASK       0x0003
1193 #define SCO_AIRMODE_CVSD       0x0000
1194 #define SCO_AIRMODE_TRANSP     0x0003
1195
1196 #endif /* __HCI_CORE_H */