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