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         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 144         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 145         __u8            eir[HCI_MAX_EIR_LENGTH];
 146         __u8            dev_class[3];
 147         __u8            major_class;
 148         __u8            minor_class;
 149         __u8            max_page;
 150         __u8            features[HCI_MAX_PAGES][8];
 151         __u8            le_features[8];
 152         __u8            le_white_list_size;
 153         __u8            le_states[8];
 154         __u8            commands[64];
 155         __u8            hci_ver;
 156         __u16           hci_rev;
 157         __u8            lmp_ver;
 158         __u16           manufacturer;
 159         __u16           lmp_subver;
 160         __u16           voice_setting;
 161         __u8            io_capability;
 162         __s8            inq_tx_power;
 163         __u16           page_scan_interval;
 164         __u16           page_scan_window;
 165         __u8            page_scan_type;
 166
 167         __u16           devid_source;
 168         __u16           devid_vendor;
 169         __u16           devid_product;
 170         __u16           devid_version;
 171
 172         __u16           pkt_type;
 173         __u16           esco_type;
 174         __u16           link_policy;
 175         __u16           link_mode;
 176
 177         __u32           idle_timeout;
 178         __u16           sniff_min_interval;
 179         __u16           sniff_max_interval;
 180
 181         __u8            amp_status;
 182         __u32           amp_total_bw;
 183         __u32           amp_max_bw;
 184         __u32           amp_min_latency;
 185         __u32           amp_max_pdu;
 186         __u8            amp_type;
 187         __u16           amp_pal_cap;
 188         __u16           amp_assoc_size;
 189         __u32           amp_max_flush_to;
 190         __u32           amp_be_flush_to;
 191
 192         struct amp_assoc        loc_assoc;
 193
 194         __u8            flow_ctl_mode;
 195
 196         unsigned int    auto_accept_delay;
 197
 198         unsigned long   quirks;
 199
 200         atomic_t        cmd_cnt;
 201         unsigned int    acl_cnt;
 202         unsigned int    sco_cnt;
 203         unsigned int    le_cnt;
 204
 205         unsigned int    acl_mtu;
 206         unsigned int    sco_mtu;
 207         unsigned int    le_mtu;
 208         unsigned int    acl_pkts;
 209         unsigned int    sco_pkts;
 210         unsigned int    le_pkts;
 211
 212         __u16           block_len;
 213         __u16           block_mtu;
 214         __u16           num_blocks;
 215         __u16           block_cnt;
 216
 217         unsigned long   acl_last_tx;
 218         unsigned long   sco_last_tx;
 219         unsigned long   le_last_tx;
 220
 221         struct workqueue_struct *workqueue;
 222         struct workqueue_struct *req_workqueue;
 223
 224         struct work_struct      power_on;
 225         struct delayed_work     power_off;
 226
 227         __u16                   discov_timeout;
 228         struct delayed_work     discov_off;
 229
 230         struct delayed_work     service_cache;
 231
 232         struct timer_list       cmd_timer;
 233
 234         struct work_struct      rx_work;
 235         struct work_struct      cmd_work;
 236         struct work_struct      tx_work;
 237
 238         struct sk_buff_head     rx_q;
 239         struct sk_buff_head     raw_q;
 240         struct sk_buff_head     cmd_q;
 241
 242         struct sk_buff          *recv_evt;
 243         struct sk_buff          *sent_cmd;
 244         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 245
 246         struct mutex            req_lock;
 247         wait_queue_head_t       req_wait_q;
 248         __u32                   req_status;
 249         __u32                   req_result;
 250
 251         struct list_head        mgmt_pending;
 252
 253         struct discovery_state  discovery;
 254         struct hci_conn_hash    conn_hash;
 255         struct list_head        blacklist;
 256
 257         struct list_head        uuids;
 258
 259         struct list_head        link_keys;
 260
 261         struct list_head        long_term_keys;
 262
 263         struct list_head        remote_oob_data;
 264
 265         struct hci_dev_stats    stat;
 266
 267         atomic_t                promisc;
 268
 269         struct dentry           *debugfs;
 270
 271         struct device           dev;
 272
 273         struct rfkill           *rfkill;
 274
 275         unsigned long           dev_flags;
 276
 277         struct delayed_work     le_scan_disable;
 278
 279         __s8                    adv_tx_power;
 280         __u8                    adv_data[HCI_MAX_AD_LENGTH];
 281         __u8                    adv_data_len;
 282
 283         int (*open)(struct hci_dev *hdev);
 284         int (*close)(struct hci_dev *hdev);
 285         int (*flush)(struct hci_dev *hdev);
 286         int (*setup)(struct hci_dev *hdev);
 287         int (*send)(struct sk_buff *skb);
 288         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 289         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 290 };
 291
 292 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 293
 294 struct hci_conn {
 295         struct list_head list;
 296
 297         atomic_t        refcnt;
 298
 299         bdaddr_t        dst;
 300         __u8            dst_type;
 301         __u16           handle;
 302         __u16           state;
 303         __u8            mode;
 304         __u8            type;
 305         bool            out;
 306         __u8            attempt;
 307         __u8            dev_class[3];
 308         __u8            features[HCI_MAX_PAGES][8];
 309         __u16           interval;
 310         __u16           pkt_type;
 311         __u16           link_policy;
 312         __u32           link_mode;
 313         __u8            key_type;
 314         __u8            auth_type;
 315         __u8            sec_level;
 316         __u8            pending_sec_level;
 317         __u8            pin_length;
 318         __u8            enc_key_size;
 319         __u8            io_capability;
 320         __u32           passkey_notify;
 321         __u8            passkey_entered;
 322         __u16           disc_timeout;
 323         __u16           setting;
 324         unsigned long   flags;
 325
 326         __u8            remote_cap;
 327         __u8            remote_auth;
 328         __u8            remote_id;
 329         bool            flush_key;
 330
 331         unsigned int    sent;
 332
 333         struct sk_buff_head data_q;
 334         struct list_head chan_list;
 335
 336         struct delayed_work disc_work;
 337         struct timer_list idle_timer;
 338         struct timer_list auto_accept_timer;
 339
 340         struct device   dev;
 341
 342         struct hci_dev  *hdev;
 343         void            *l2cap_data;
 344         void            *sco_data;
 345         void            *smp_conn;
 346         struct amp_mgr  *amp_mgr;
 347
 348         struct hci_conn *link;
 349
 350         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 351         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 352         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 353 };
 354
 355 struct hci_chan {
 356         struct list_head list;
 357         __u16 handle;
 358         struct hci_conn *conn;
 359         struct sk_buff_head data_q;
 360         unsigned int    sent;
 361         __u8            state;
 362 };
 363
 364 extern struct list_head hci_dev_list;
 365 extern struct list_head hci_cb_list;
 366 extern rwlock_t hci_dev_list_lock;
 367 extern rwlock_t hci_cb_list_lock;
 368
 369 /* ----- HCI interface to upper protocols ----- */
 370 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 371 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 372 extern int l2cap_disconn_ind(struct hci_conn *hcon);
 373 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 374 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 375 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
 376                               u16 flags);
 377
 378 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 379 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 380 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 381 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 382
 383 /* ----- Inquiry cache ----- */
 384 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 385 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 386
 387 static inline void discovery_init(struct hci_dev *hdev)
 388 {
 389         hdev->discovery.state = DISCOVERY_STOPPED;
 390         INIT_LIST_HEAD(&hdev->discovery.all);
 391         INIT_LIST_HEAD(&hdev->discovery.unknown);
 392         INIT_LIST_HEAD(&hdev->discovery.resolve);
 393 }
 394
 395 bool hci_discovery_active(struct hci_dev *hdev);
 396
 397 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 398
 399 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 400 {
 401         return list_empty(&hdev->discovery.all);
 402 }
 403
 404 static inline long inquiry_cache_age(struct hci_dev *hdev)
 405 {
 406         struct discovery_state *c = &hdev->discovery;
 407         return jiffies - c->timestamp;
 408 }
 409
 410 static inline long inquiry_entry_age(struct inquiry_entry *e)
 411 {
 412         return jiffies - e->timestamp;
 413 }
 414
 415 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 416                                                bdaddr_t *bdaddr);
 417 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 418                                                        bdaddr_t *bdaddr);
 419 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 420                                                        bdaddr_t *bdaddr,
 421                                                        int state);
 422 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 423                                       struct inquiry_entry *ie);
 424 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 425                               bool name_known, bool *ssp);
 426 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 427
 428 /* ----- HCI Connections ----- */
 429 enum {
 430         HCI_CONN_AUTH_PEND,
 431         HCI_CONN_REAUTH_PEND,
 432         HCI_CONN_ENCRYPT_PEND,
 433         HCI_CONN_RSWITCH_PEND,
 434         HCI_CONN_MODE_CHANGE_PEND,
 435         HCI_CONN_SCO_SETUP_PEND,
 436         HCI_CONN_LE_SMP_PEND,
 437         HCI_CONN_MGMT_CONNECTED,
 438         HCI_CONN_SSP_ENABLED,
 439         HCI_CONN_POWER_SAVE,
 440         HCI_CONN_REMOTE_OOB,
 441 };
 442
 443 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 444 {
 445         struct hci_dev *hdev = conn->hdev;
 446         return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 447                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 448 }
 449
 450 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 451 {
 452         struct hci_conn_hash *h = &hdev->conn_hash;
 453         list_add_rcu(&c->list, &h->list);
 454         switch (c->type) {
 455         case ACL_LINK:
 456                 h->acl_num++;
 457                 break;
 458         case AMP_LINK:
 459                 h->amp_num++;
 460                 break;
 461         case LE_LINK:
 462                 h->le_num++;
 463                 break;
 464         case SCO_LINK:
 465         case ESCO_LINK:
 466                 h->sco_num++;
 467                 break;
 468         }
 469 }
 470
 471 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 472 {
 473         struct hci_conn_hash *h = &hdev->conn_hash;
 474
 475         list_del_rcu(&c->list);
 476         synchronize_rcu();
 477
 478         switch (c->type) {
 479         case ACL_LINK:
 480                 h->acl_num--;
 481                 break;
 482         case AMP_LINK:
 483                 h->amp_num--;
 484                 break;
 485         case LE_LINK:
 486                 h->le_num--;
 487                 break;
 488         case SCO_LINK:
 489         case ESCO_LINK:
 490                 h->sco_num--;
 491                 break;
 492         }
 493 }
 494
 495 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 496 {
 497         struct hci_conn_hash *h = &hdev->conn_hash;
 498         switch (type) {
 499         case ACL_LINK:
 500                 return h->acl_num;
 501         case AMP_LINK:
 502                 return h->amp_num;
 503         case LE_LINK:
 504                 return h->le_num;
 505         case SCO_LINK:
 506         case ESCO_LINK:
 507                 return h->sco_num;
 508         default:
 509                 return 0;
 510         }
 511 }
 512
 513 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 514                                                                 __u16 handle)
 515 {
 516         struct hci_conn_hash *h = &hdev->conn_hash;
 517         struct hci_conn  *c;
 518
 519         rcu_read_lock();
 520
 521         list_for_each_entry_rcu(c, &h->list, list) {
 522                 if (c->handle == handle) {
 523                         rcu_read_unlock();
 524                         return c;
 525                 }
 526         }
 527         rcu_read_unlock();
 528
 529         return NULL;
 530 }
 531
 532 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 533                                                         __u8 type, bdaddr_t *ba)
 534 {
 535         struct hci_conn_hash *h = &hdev->conn_hash;
 536         struct hci_conn  *c;
 537
 538         rcu_read_lock();
 539
 540         list_for_each_entry_rcu(c, &h->list, list) {
 541                 if (c->type == type && !bacmp(&c->dst, ba)) {
 542                         rcu_read_unlock();
 543                         return c;
 544                 }
 545         }
 546
 547         rcu_read_unlock();
 548
 549         return NULL;
 550 }
 551
 552 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 553                                                         __u8 type, __u16 state)
 554 {
 555         struct hci_conn_hash *h = &hdev->conn_hash;
 556         struct hci_conn  *c;
 557
 558         rcu_read_lock();
 559
 560         list_for_each_entry_rcu(c, &h->list, list) {
 561                 if (c->type == type && c->state == state) {
 562                         rcu_read_unlock();
 563                         return c;
 564                 }
 565         }
 566
 567         rcu_read_unlock();
 568
 569         return NULL;
 570 }
 571
 572 void hci_disconnect(struct hci_conn *conn, __u8 reason);
 573 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 574 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 575
 576 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 577 int hci_conn_del(struct hci_conn *conn);
 578 void hci_conn_hash_flush(struct hci_dev *hdev);
 579 void hci_conn_check_pending(struct hci_dev *hdev);
 580
 581 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 582 void hci_chan_del(struct hci_chan *chan);
 583 void hci_chan_list_flush(struct hci_conn *conn);
 584 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 585
 586 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 587                              __u8 dst_type, __u8 sec_level, __u8 auth_type);
 588 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 589                                  __u16 setting);
 590 int hci_conn_check_link_mode(struct hci_conn *conn);
 591 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 592 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 593 int hci_conn_change_link_key(struct hci_conn *conn);
 594 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 595
 596 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 597
 598 /*
 599  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 600  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 601  * working or anything else. They just guarantee that the object is available
 602  * and can be dereferenced. So you can use its locks, local variables and any
 603  * other constant data.
 604  * Before accessing runtime data, you _must_ lock the object and then check that
 605  * it is still running. As soon as you release the locks, the connection might
 606  * get dropped, though.
 607  *
 608  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 609  * how long the underlying connection is held. So every channel that runs on the
 610  * hci_conn object calls this to prevent the connection from disappearing. As
 611  * long as you hold a device, you must also guarantee that you have a valid
 612  * reference to the device via hci_conn_get() (or the initial reference from
 613  * hci_conn_add()).
 614  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 615  * break because nobody cares for that. But this means, we cannot use
 616  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 617  */
 618
 619 static inline void hci_conn_get(struct hci_conn *conn)
 620 {
 621         get_device(&conn->dev);
 622 }
 623
 624 static inline void hci_conn_put(struct hci_conn *conn)
 625 {
 626         put_device(&conn->dev);
 627 }
 628
 629 static inline void hci_conn_hold(struct hci_conn *conn)
 630 {
 631         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 632
 633         atomic_inc(&conn->refcnt);
 634         cancel_delayed_work(&conn->disc_work);
 635 }
 636
 637 static inline void hci_conn_drop(struct hci_conn *conn)
 638 {
 639         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 640
 641         if (atomic_dec_and_test(&conn->refcnt)) {
 642                 unsigned long timeo;
 643
 644                 switch (conn->type) {
 645                 case ACL_LINK:
 646                 case LE_LINK:
 647                         del_timer(&conn->idle_timer);
 648                         if (conn->state == BT_CONNECTED) {
 649                                 timeo = conn->disc_timeout;
 650                                 if (!conn->out)
 651                                         timeo *= 2;
 652                         } else {
 653                                 timeo = msecs_to_jiffies(10);
 654                         }
 655                         break;
 656
 657                 case AMP_LINK:
 658                         timeo = conn->disc_timeout;
 659                         break;
 660
 661                 default:
 662                         timeo = msecs_to_jiffies(10);
 663                         break;
 664                 }
 665
 666                 cancel_delayed_work(&conn->disc_work);
 667                 queue_delayed_work(conn->hdev->workqueue,
 668                                    &conn->disc_work, timeo);
 669         }
 670 }
 671
 672 /* ----- HCI Devices ----- */
 673 static inline void hci_dev_put(struct hci_dev *d)
 674 {
 675         BT_DBG("%s orig refcnt %d", d->name,
 676                atomic_read(&d->dev.kobj.kref.refcount));
 677
 678         put_device(&d->dev);
 679 }
 680
 681 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 682 {
 683         BT_DBG("%s orig refcnt %d", d->name,
 684                atomic_read(&d->dev.kobj.kref.refcount));
 685
 686         get_device(&d->dev);
 687         return d;
 688 }
 689
 690 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 691 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 692
 693 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 694 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 695
 696 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 697 {
 698         return dev_get_drvdata(&hdev->dev);
 699 }
 700
 701 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 702 {
 703         dev_set_drvdata(&hdev->dev, data);
 704 }
 705
 706 /* hci_dev_list shall be locked */
 707 static inline uint8_t __hci_num_ctrl(void)
 708 {
 709         uint8_t count = 0;
 710         struct list_head *p;
 711
 712         list_for_each(p, &hci_dev_list) {
 713                 count++;
 714         }
 715
 716         return count;
 717 }
 718
 719 struct hci_dev *hci_dev_get(int index);
 720 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
 721
 722 struct hci_dev *hci_alloc_dev(void);
 723 void hci_free_dev(struct hci_dev *hdev);
 724 int hci_register_dev(struct hci_dev *hdev);
 725 void hci_unregister_dev(struct hci_dev *hdev);
 726 int hci_suspend_dev(struct hci_dev *hdev);
 727 int hci_resume_dev(struct hci_dev *hdev);
 728 int hci_dev_open(__u16 dev);
 729 int hci_dev_close(__u16 dev);
 730 int hci_dev_reset(__u16 dev);
 731 int hci_dev_reset_stat(__u16 dev);
 732 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 733 int hci_get_dev_list(void __user *arg);
 734 int hci_get_dev_info(void __user *arg);
 735 int hci_get_conn_list(void __user *arg);
 736 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 737 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 738 int hci_inquiry(void __user *arg);
 739
 740 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
 741                                          bdaddr_t *bdaddr);
 742 int hci_blacklist_clear(struct hci_dev *hdev);
 743 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 744 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 745
 746 int hci_uuids_clear(struct hci_dev *hdev);
 747
 748 int hci_link_keys_clear(struct hci_dev *hdev);
 749 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 750 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 751                      bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 752 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 753 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
 754                 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
 755                 __le16 ediv, u8 rand[8]);
 756 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 757                                      u8 addr_type);
 758 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
 759 int hci_smp_ltks_clear(struct hci_dev *hdev);
 760 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 761
 762 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 763 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 764                                                         bdaddr_t *bdaddr);
 765 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 766                                                                 u8 *randomizer);
 767 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 768
 769 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 770
 771 int hci_recv_frame(struct sk_buff *skb);
 772 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 773 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 774
 775 void hci_init_sysfs(struct hci_dev *hdev);
 776 int hci_add_sysfs(struct hci_dev *hdev);
 777 void hci_del_sysfs(struct hci_dev *hdev);
 778 void hci_conn_init_sysfs(struct hci_conn *conn);
 779 void hci_conn_add_sysfs(struct hci_conn *conn);
 780 void hci_conn_del_sysfs(struct hci_conn *conn);
 781
 782 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
 783
 784 /* ----- LMP capabilities ----- */
 785 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
 786 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
 787 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
 788 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
 789 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
 790 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
 791 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
 792 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
 793 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
 794 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
 795 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
 796 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
 797 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
 798 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
 799 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
 800 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
 801 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
 802 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
 803 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
 804
 805 /* ----- Extended LMP capabilities ----- */
 806 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
 807 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
 808 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
 809
 810 /* returns true if at least one AMP active */
 811 static inline bool hci_amp_capable(void)
 812 {
 813         struct hci_dev *hdev;
 814         bool ret = false;
 815
 816         read_lock(&hci_dev_list_lock);
 817         list_for_each_entry(hdev, &hci_dev_list, list)
 818                 if (hdev->amp_type == HCI_AMP &&
 819                     test_bit(HCI_UP, &hdev->flags))
 820                         ret = true;
 821         read_unlock(&hci_dev_list_lock);
 822
 823         return ret;
 824 }
 825
 826 /* ----- HCI protocols ----- */
 827 #define HCI_PROTO_DEFER             0x01
 828
 829 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 830                                         __u8 type, __u8 *flags)
 831 {
 832         switch (type) {
 833         case ACL_LINK:
 834                 return l2cap_connect_ind(hdev, bdaddr);
 835
 836         case SCO_LINK:
 837         case ESCO_LINK:
 838                 return sco_connect_ind(hdev, bdaddr, flags);
 839
 840         default:
 841                 BT_ERR("unknown link type %d", type);
 842                 return -EINVAL;
 843         }
 844 }
 845
 846 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 847 {
 848         switch (conn->type) {
 849         case ACL_LINK:
 850         case LE_LINK:
 851                 l2cap_connect_cfm(conn, status);
 852                 break;
 853
 854         case SCO_LINK:
 855         case ESCO_LINK:
 856                 sco_connect_cfm(conn, status);
 857                 break;
 858
 859         default:
 860                 BT_ERR("unknown link type %d", conn->type);
 861                 break;
 862         }
 863
 864         if (conn->connect_cfm_cb)
 865                 conn->connect_cfm_cb(conn, status);
 866 }
 867
 868 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 869 {
 870         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 871                 return HCI_ERROR_REMOTE_USER_TERM;
 872
 873         return l2cap_disconn_ind(conn);
 874 }
 875
 876 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 877 {
 878         switch (conn->type) {
 879         case ACL_LINK:
 880         case LE_LINK:
 881                 l2cap_disconn_cfm(conn, reason);
 882                 break;
 883
 884         case SCO_LINK:
 885         case ESCO_LINK:
 886                 sco_disconn_cfm(conn, reason);
 887                 break;
 888
 889         /* L2CAP would be handled for BREDR chan */
 890         case AMP_LINK:
 891                 break;
 892
 893         default:
 894                 BT_ERR("unknown link type %d", conn->type);
 895                 break;
 896         }
 897
 898         if (conn->disconn_cfm_cb)
 899                 conn->disconn_cfm_cb(conn, reason);
 900 }
 901
 902 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 903 {
 904         __u8 encrypt;
 905
 906         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 907                 return;
 908
 909         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 910                 return;
 911
 912         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 913         l2cap_security_cfm(conn, status, encrypt);
 914
 915         if (conn->security_cfm_cb)
 916                 conn->security_cfm_cb(conn, status);
 917 }
 918
 919 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 920                                                                 __u8 encrypt)
 921 {
 922         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 923                 return;
 924
 925         l2cap_security_cfm(conn, status, encrypt);
 926
 927         if (conn->security_cfm_cb)
 928                 conn->security_cfm_cb(conn, status);
 929 }
 930
 931 /* ----- HCI callbacks ----- */
 932 struct hci_cb {
 933         struct list_head list;
 934
 935         char *name;
 936
 937         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 938                                                                 __u8 encrypt);
 939         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 940         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 941 };
 942
 943 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 944 {
 945         struct hci_cb *cb;
 946         __u8 encrypt;
 947
 948         hci_proto_auth_cfm(conn, status);
 949
 950         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 951                 return;
 952
 953         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 954
 955         read_lock(&hci_cb_list_lock);
 956         list_for_each_entry(cb, &hci_cb_list, list) {
 957                 if (cb->security_cfm)
 958                         cb->security_cfm(conn, status, encrypt);
 959         }
 960         read_unlock(&hci_cb_list_lock);
 961 }
 962
 963 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 964                                                                 __u8 encrypt)
 965 {
 966         struct hci_cb *cb;
 967
 968         if (conn->sec_level == BT_SECURITY_SDP)
 969                 conn->sec_level = BT_SECURITY_LOW;
 970
 971         if (conn->pending_sec_level > conn->sec_level)
 972                 conn->sec_level = conn->pending_sec_level;
 973
 974         hci_proto_encrypt_cfm(conn, status, encrypt);
 975
 976         read_lock(&hci_cb_list_lock);
 977         list_for_each_entry(cb, &hci_cb_list, list) {
 978                 if (cb->security_cfm)
 979                         cb->security_cfm(conn, status, encrypt);
 980         }
 981         read_unlock(&hci_cb_list_lock);
 982 }
 983
 984 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 985 {
 986         struct hci_cb *cb;
 987
 988         read_lock(&hci_cb_list_lock);
 989         list_for_each_entry(cb, &hci_cb_list, list) {
 990                 if (cb->key_change_cfm)
 991                         cb->key_change_cfm(conn, status);
 992         }
 993         read_unlock(&hci_cb_list_lock);
 994 }
 995
 996 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 997                                                                 __u8 role)
 998 {
 999         struct hci_cb *cb;
1000
1001         read_lock(&hci_cb_list_lock);
1002         list_for_each_entry(cb, &hci_cb_list, list) {
1003                 if (cb->role_switch_cfm)
1004                         cb->role_switch_cfm(conn, status, role);
1005         }
1006         read_unlock(&hci_cb_list_lock);
1007 }
1008
1009 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1010 {
1011         size_t parsed = 0;
1012
1013         if (data_len < 2)
1014                 return false;
1015
1016         while (parsed < data_len - 1) {
1017                 u8 field_len = data[0];
1018
1019                 if (field_len == 0)
1020                         break;
1021
1022                 parsed += field_len + 1;
1023
1024                 if (parsed > data_len)
1025                         break;
1026
1027                 if (data[1] == type)
1028                         return true;
1029
1030                 data += field_len + 1;
1031         }
1032
1033         return false;
1034 }
1035
1036 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
1037 {
1038         size_t parsed = 0;
1039
1040         while (parsed < eir_len) {
1041                 u8 field_len = eir[0];
1042
1043                 if (field_len == 0)
1044                         return parsed;
1045
1046                 parsed += field_len + 1;
1047                 eir += field_len + 1;
1048         }
1049
1050         return eir_len;
1051 }
1052
1053 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1054                                   u8 data_len)
1055 {
1056         eir[eir_len++] = sizeof(type) + data_len;
1057         eir[eir_len++] = type;
1058         memcpy(&eir[eir_len], data, data_len);
1059         eir_len += data_len;
1060
1061         return eir_len;
1062 }
1063
1064 int hci_register_cb(struct hci_cb *hcb);
1065 int hci_unregister_cb(struct hci_cb *hcb);
1066
1067 struct hci_request {
1068         struct hci_dev          *hdev;
1069         struct sk_buff_head     cmd_q;
1070
1071         /* If something goes wrong when building the HCI request, the error
1072          * value is stored in this field.
1073          */
1074         int                     err;
1075 };
1076
1077 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1078 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1079 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1080                  const void *param);
1081 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1082                     const void *param, u8 event);
1083 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1084
1085 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1086                                const void *param, u32 timeout);
1087 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1088                                   const void *param, u8 event, u32 timeout);
1089
1090 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1091                  const void *param);
1092 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1093 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1094
1095 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1096
1097 /* ----- HCI Sockets ----- */
1098 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1099 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1100 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1101
1102 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1103
1104 /* Management interface */
1105 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1106 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1107                                          BIT(BDADDR_LE_RANDOM))
1108 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1109                                          BIT(BDADDR_LE_PUBLIC) | \
1110                                          BIT(BDADDR_LE_RANDOM))
1111
1112 /* These LE scan and inquiry parameters were chosen according to LE General
1113  * Discovery Procedure specification.
1114  */
1115 #define DISCOV_LE_SCAN_WIN              0x12
1116 #define DISCOV_LE_SCAN_INT              0x12
1117 #define DISCOV_LE_TIMEOUT               msecs_to_jiffies(10240)
1118 #define DISCOV_INTERLEAVED_TIMEOUT      msecs_to_jiffies(5120)
1119 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1120 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1121
1122 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1123 int mgmt_index_added(struct hci_dev *hdev);
1124 int mgmt_index_removed(struct hci_dev *hdev);
1125 int mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1126 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1127 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1128 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1129 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1130 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1131                       bool persistent);
1132 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1133                           u8 addr_type, u32 flags, u8 *name, u8 name_len,
1134                           u8 *dev_class);
1135 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1136                              u8 link_type, u8 addr_type, u8 reason);
1137 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1138                            u8 link_type, u8 addr_type, u8 status);
1139 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1140                         u8 addr_type, u8 status);
1141 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1142 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1143                                  u8 status);
1144 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1145                                      u8 status);
1146 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1147                               u8 link_type, u8 addr_type, __le32 value,
1148                               u8 confirm_hint);
1149 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1150                                      u8 link_type, u8 addr_type, u8 status);
1151 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1152                                          u8 link_type, u8 addr_type, u8 status);
1153 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1154                               u8 link_type, u8 addr_type);
1155 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1156                                      u8 link_type, u8 addr_type, u8 status);
1157 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1158                                          u8 link_type, u8 addr_type, u8 status);
1159 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1160                              u8 link_type, u8 addr_type, u32 passkey,
1161                              u8 entered);
1162 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1163                      u8 addr_type, u8 status);
1164 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1165 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1166 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1167                                    u8 status);
1168 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1169 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1170                                             u8 *randomizer, u8 status);
1171 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1172 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1173                       u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1174                       u8 ssp, u8 *eir, u16 eir_len);
1175 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1176                      u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1177 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1178 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1179 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1180 bool mgmt_valid_hdev(struct hci_dev *hdev);
1181 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1182
1183 /* HCI info for socket */
1184 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1185
1186 struct hci_pinfo {
1187         struct bt_sock    bt;
1188         struct hci_dev    *hdev;
1189         struct hci_filter filter;
1190         __u32             cmsg_mask;
1191         unsigned short   channel;
1192 };
1193
1194 /* HCI security filter */
1195 #define HCI_SFLT_MAX_OGF  5
1196
1197 struct hci_sec_filter {
1198         __u32 type_mask;
1199         __u32 event_mask[2];
1200         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1201 };
1202
1203 /* ----- HCI requests ----- */
1204 #define HCI_REQ_DONE      0
1205 #define HCI_REQ_PEND      1
1206 #define HCI_REQ_CANCELED  2
1207
1208 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
1209 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
1210
1211 void hci_update_ad(struct hci_request *req);
1212
1213 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1214                                         u16 latency, u16 to_multiplier);
1215 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1216                                                         __u8 ltk[16]);
1217
1218 u8 bdaddr_to_le(u8 bdaddr_type);
1219
1220 #define SCO_AIRMODE_MASK       0x0003
1221 #define SCO_AIRMODE_CVSD       0x0000
1222 #define SCO_AIRMODE_TRANSP     0x0003
1223
1224 #endif /* __HCI_CORE_H */