include/net/bluetooth/hci_core.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
   4
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 #ifndef __HCI_CORE_H
  26 #define __HCI_CORE_H
  27
  28 #include <net/bluetooth/hci.h>
  29
  30 /* HCI priority */
  31 #define HCI_PRIO_MAX    7
  32
  33 /* HCI Core structures */
  34 struct inquiry_data {
  35         bdaddr_t        bdaddr;
  36         __u8            pscan_rep_mode;
  37         __u8            pscan_period_mode;
  38         __u8            pscan_mode;
  39         __u8            dev_class[3];
  40         __le16          clock_offset;
  41         __s8            rssi;
  42         __u8            ssp_mode;
  43 };
  44
  45 struct inquiry_entry {
  46         struct list_head        all;            /* inq_cache.all */
  47         struct list_head        list;           /* unknown or resolve */
  48         enum {
  49                 NAME_NOT_KNOWN,
  50                 NAME_NEEDED,
  51                 NAME_PENDING,
  52                 NAME_KNOWN,
  53         } name_state;
  54         __u32                   timestamp;
  55         struct inquiry_data     data;
  56 };
  57
  58 struct discovery_state {
  59         int                     type;
  60         enum {
  61                 DISCOVERY_STOPPED,
  62                 DISCOVERY_STARTING,
  63                 DISCOVERY_FINDING,
  64                 DISCOVERY_RESOLVING,
  65                 DISCOVERY_STOPPING,
  66         } state;
  67         struct list_head        all;    /* All devices found during inquiry */
  68         struct list_head        unknown;        /* Name state not known */
  69         struct list_head        resolve;        /* Name needs to be resolved */
  70         __u32                   timestamp;
  71 };
  72
  73 struct hci_conn_hash {
  74         struct list_head list;
  75         unsigned int     acl_num;
  76         unsigned int     amp_num;
  77         unsigned int     sco_num;
  78         unsigned int     le_num;
  79 };
  80
  81 struct bdaddr_list {
  82         struct list_head list;
  83         bdaddr_t bdaddr;
  84 };
  85
  86 struct bt_uuid {
  87         struct list_head list;
  88         u8 uuid[16];
  89         u8 size;
  90         u8 svc_hint;
  91 };
  92
  93 struct smp_ltk {
  94         struct list_head list;
  95         bdaddr_t bdaddr;
  96         u8 bdaddr_type;
  97         u8 authenticated;
  98         u8 type;
  99         u8 enc_size;
 100         __le16 ediv;
 101         u8 rand[8];
 102         u8 val[16];
 103 } __packed;
 104
 105 struct link_key {
 106         struct list_head list;
 107         bdaddr_t bdaddr;
 108         u8 type;
 109         u8 val[HCI_LINK_KEY_SIZE];
 110         u8 pin_len;
 111 };
 112
 113 struct oob_data {
 114         struct list_head list;
 115         bdaddr_t bdaddr;
 116         u8 hash[16];
 117         u8 randomizer[16];
 118 };
 119
 120 #define HCI_MAX_SHORT_NAME_LENGTH       10
 121
 122 struct amp_assoc {
 123         __u16   len;
 124         __u16   offset;
 125         __u16   rem_len;
 126         __u16   len_so_far;
 127         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
 128 };
 129
 130 #define HCI_MAX_PAGES   3
 131
 132 #define NUM_REASSEMBLY 4
 133 struct hci_dev {
 134         struct list_head list;
 135         struct mutex    lock;
 136
 137         char            name[8];
 138         unsigned long   flags;
 139         __u16           id;
 140         __u8            bus;
 141         __u8            dev_type;
 142         bdaddr_t        bdaddr;
 143         bdaddr_t        static_addr;
 144         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 145         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 146         __u8            eir[HCI_MAX_EIR_LENGTH];
 147         __u8            dev_class[3];
 148         __u8            major_class;
 149         __u8            minor_class;
 150         __u8            max_page;
 151         __u8            features[HCI_MAX_PAGES][8];
 152         __u8            le_features[8];
 153         __u8            le_white_list_size;
 154         __u8            le_states[8];
 155         __u8            commands[64];
 156         __u8            hci_ver;
 157         __u16           hci_rev;
 158         __u8            lmp_ver;
 159         __u16           manufacturer;
 160         __u16           lmp_subver;
 161         __u16           voice_setting;
 162         __u8            num_iac;
 163         __u8            io_capability;
 164         __s8            inq_tx_power;
 165         __u16           page_scan_interval;
 166         __u16           page_scan_window;
 167         __u8            page_scan_type;
 168         __u16           le_scan_interval;
 169         __u16           le_scan_window;
 170
 171         __u16           devid_source;
 172         __u16           devid_vendor;
 173         __u16           devid_product;
 174         __u16           devid_version;
 175
 176         __u16           pkt_type;
 177         __u16           esco_type;
 178         __u16           link_policy;
 179         __u16           link_mode;
 180
 181         __u32           idle_timeout;
 182         __u16           sniff_min_interval;
 183         __u16           sniff_max_interval;
 184
 185         __u8            amp_status;
 186         __u32           amp_total_bw;
 187         __u32           amp_max_bw;
 188         __u32           amp_min_latency;
 189         __u32           amp_max_pdu;
 190         __u8            amp_type;
 191         __u16           amp_pal_cap;
 192         __u16           amp_assoc_size;
 193         __u32           amp_max_flush_to;
 194         __u32           amp_be_flush_to;
 195
 196         struct amp_assoc        loc_assoc;
 197
 198         __u8            flow_ctl_mode;
 199
 200         unsigned int    auto_accept_delay;
 201
 202         unsigned long   quirks;
 203
 204         atomic_t        cmd_cnt;
 205         unsigned int    acl_cnt;
 206         unsigned int    sco_cnt;
 207         unsigned int    le_cnt;
 208
 209         unsigned int    acl_mtu;
 210         unsigned int    sco_mtu;
 211         unsigned int    le_mtu;
 212         unsigned int    acl_pkts;
 213         unsigned int    sco_pkts;
 214         unsigned int    le_pkts;
 215
 216         __u16           block_len;
 217         __u16           block_mtu;
 218         __u16           num_blocks;
 219         __u16           block_cnt;
 220
 221         unsigned long   acl_last_tx;
 222         unsigned long   sco_last_tx;
 223         unsigned long   le_last_tx;
 224
 225         struct workqueue_struct *workqueue;
 226         struct workqueue_struct *req_workqueue;
 227
 228         struct work_struct      power_on;
 229         struct delayed_work     power_off;
 230
 231         __u16                   discov_timeout;
 232         struct delayed_work     discov_off;
 233
 234         struct delayed_work     service_cache;
 235
 236         struct timer_list       cmd_timer;
 237
 238         struct work_struct      rx_work;
 239         struct work_struct      cmd_work;
 240         struct work_struct      tx_work;
 241
 242         struct sk_buff_head     rx_q;
 243         struct sk_buff_head     raw_q;
 244         struct sk_buff_head     cmd_q;
 245
 246         struct sk_buff          *recv_evt;
 247         struct sk_buff          *sent_cmd;
 248         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 249
 250         struct mutex            req_lock;
 251         wait_queue_head_t       req_wait_q;
 252         __u32                   req_status;
 253         __u32                   req_result;
 254
 255         struct list_head        mgmt_pending;
 256
 257         struct discovery_state  discovery;
 258         struct hci_conn_hash    conn_hash;
 259         struct list_head        blacklist;
 260
 261         struct list_head        uuids;
 262
 263         struct list_head        link_keys;
 264
 265         struct list_head        long_term_keys;
 266
 267         struct list_head        remote_oob_data;
 268
 269         struct hci_dev_stats    stat;
 270
 271         atomic_t                promisc;
 272
 273         struct dentry           *debugfs;
 274
 275         struct device           dev;
 276
 277         struct rfkill           *rfkill;
 278
 279         unsigned long           dev_flags;
 280
 281         struct delayed_work     le_scan_disable;
 282
 283         __s8                    adv_tx_power;
 284         __u8                    adv_data[HCI_MAX_AD_LENGTH];
 285         __u8                    adv_data_len;
 286         __u8                    scan_rsp_data[HCI_MAX_AD_LENGTH];
 287         __u8                    scan_rsp_data_len;
 288
 289         int (*open)(struct hci_dev *hdev);
 290         int (*close)(struct hci_dev *hdev);
 291         int (*flush)(struct hci_dev *hdev);
 292         int (*setup)(struct hci_dev *hdev);
 293         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 294         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 295 };
 296
 297 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 298
 299 struct hci_conn {
 300         struct list_head list;
 301
 302         atomic_t        refcnt;
 303
 304         bdaddr_t        dst;
 305         __u8            dst_type;
 306         bdaddr_t        src;
 307         __u8            src_type;
 308         __u16           handle;
 309         __u16           state;
 310         __u8            mode;
 311         __u8            type;
 312         bool            out;
 313         __u8            attempt;
 314         __u8            dev_class[3];
 315         __u8            features[HCI_MAX_PAGES][8];
 316         __u16           interval;
 317         __u16           pkt_type;
 318         __u16           link_policy;
 319         __u32           link_mode;
 320         __u8            key_type;
 321         __u8            auth_type;
 322         __u8            sec_level;
 323         __u8            pending_sec_level;
 324         __u8            pin_length;
 325         __u8            enc_key_size;
 326         __u8            io_capability;
 327         __u32           passkey_notify;
 328         __u8            passkey_entered;
 329         __u16           disc_timeout;
 330         __u16           setting;
 331         unsigned long   flags;
 332
 333         __u8            remote_cap;
 334         __u8            remote_auth;
 335         __u8            remote_id;
 336         bool            flush_key;
 337
 338         unsigned int    sent;
 339
 340         struct sk_buff_head data_q;
 341         struct list_head chan_list;
 342
 343         struct delayed_work disc_work;
 344         struct delayed_work auto_accept_work;
 345         struct timer_list idle_timer;
 346
 347         struct device   dev;
 348
 349         struct hci_dev  *hdev;
 350         void            *l2cap_data;
 351         void            *sco_data;
 352         void            *smp_conn;
 353         struct amp_mgr  *amp_mgr;
 354
 355         struct hci_conn *link;
 356
 357         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 358         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 359         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 360 };
 361
 362 struct hci_chan {
 363         struct list_head list;
 364         __u16 handle;
 365         struct hci_conn *conn;
 366         struct sk_buff_head data_q;
 367         unsigned int    sent;
 368         __u8            state;
 369 };
 370
 371 extern struct list_head hci_dev_list;
 372 extern struct list_head hci_cb_list;
 373 extern rwlock_t hci_dev_list_lock;
 374 extern rwlock_t hci_cb_list_lock;
 375
 376 /* ----- HCI interface to upper protocols ----- */
 377 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 378 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 379 extern int l2cap_disconn_ind(struct hci_conn *hcon);
 380 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 381 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 382 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
 383                               u16 flags);
 384
 385 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 386 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 387 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 388 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 389
 390 /* ----- Inquiry cache ----- */
 391 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 392 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 393
 394 static inline void discovery_init(struct hci_dev *hdev)
 395 {
 396         hdev->discovery.state = DISCOVERY_STOPPED;
 397         INIT_LIST_HEAD(&hdev->discovery.all);
 398         INIT_LIST_HEAD(&hdev->discovery.unknown);
 399         INIT_LIST_HEAD(&hdev->discovery.resolve);
 400 }
 401
 402 bool hci_discovery_active(struct hci_dev *hdev);
 403
 404 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 405
 406 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 407 {
 408         return list_empty(&hdev->discovery.all);
 409 }
 410
 411 static inline long inquiry_cache_age(struct hci_dev *hdev)
 412 {
 413         struct discovery_state *c = &hdev->discovery;
 414         return jiffies - c->timestamp;
 415 }
 416
 417 static inline long inquiry_entry_age(struct inquiry_entry *e)
 418 {
 419         return jiffies - e->timestamp;
 420 }
 421
 422 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 423                                                bdaddr_t *bdaddr);
 424 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 425                                                        bdaddr_t *bdaddr);
 426 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 427                                                        bdaddr_t *bdaddr,
 428                                                        int state);
 429 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 430                                       struct inquiry_entry *ie);
 431 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 432                               bool name_known, bool *ssp);
 433 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 434
 435 /* ----- HCI Connections ----- */
 436 enum {
 437         HCI_CONN_AUTH_PEND,
 438         HCI_CONN_REAUTH_PEND,
 439         HCI_CONN_ENCRYPT_PEND,
 440         HCI_CONN_RSWITCH_PEND,
 441         HCI_CONN_MODE_CHANGE_PEND,
 442         HCI_CONN_SCO_SETUP_PEND,
 443         HCI_CONN_LE_SMP_PEND,
 444         HCI_CONN_MGMT_CONNECTED,
 445         HCI_CONN_SSP_ENABLED,
 446         HCI_CONN_POWER_SAVE,
 447         HCI_CONN_REMOTE_OOB,
 448 };
 449
 450 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 451 {
 452         struct hci_dev *hdev = conn->hdev;
 453         return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 454                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 455 }
 456
 457 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 458 {
 459         struct hci_conn_hash *h = &hdev->conn_hash;
 460         list_add_rcu(&c->list, &h->list);
 461         switch (c->type) {
 462         case ACL_LINK:
 463                 h->acl_num++;
 464                 break;
 465         case AMP_LINK:
 466                 h->amp_num++;
 467                 break;
 468         case LE_LINK:
 469                 h->le_num++;
 470                 break;
 471         case SCO_LINK:
 472         case ESCO_LINK:
 473                 h->sco_num++;
 474                 break;
 475         }
 476 }
 477
 478 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 479 {
 480         struct hci_conn_hash *h = &hdev->conn_hash;
 481
 482         list_del_rcu(&c->list);
 483         synchronize_rcu();
 484
 485         switch (c->type) {
 486         case ACL_LINK:
 487                 h->acl_num--;
 488                 break;
 489         case AMP_LINK:
 490                 h->amp_num--;
 491                 break;
 492         case LE_LINK:
 493                 h->le_num--;
 494                 break;
 495         case SCO_LINK:
 496         case ESCO_LINK:
 497                 h->sco_num--;
 498                 break;
 499         }
 500 }
 501
 502 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 503 {
 504         struct hci_conn_hash *h = &hdev->conn_hash;
 505         switch (type) {
 506         case ACL_LINK:
 507                 return h->acl_num;
 508         case AMP_LINK:
 509                 return h->amp_num;
 510         case LE_LINK:
 511                 return h->le_num;
 512         case SCO_LINK:
 513         case ESCO_LINK:
 514                 return h->sco_num;
 515         default:
 516                 return 0;
 517         }
 518 }
 519
 520 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 521                                                                 __u16 handle)
 522 {
 523         struct hci_conn_hash *h = &hdev->conn_hash;
 524         struct hci_conn  *c;
 525
 526         rcu_read_lock();
 527
 528         list_for_each_entry_rcu(c, &h->list, list) {
 529                 if (c->handle == handle) {
 530                         rcu_read_unlock();
 531                         return c;
 532                 }
 533         }
 534         rcu_read_unlock();
 535
 536         return NULL;
 537 }
 538
 539 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 540                                                         __u8 type, bdaddr_t *ba)
 541 {
 542         struct hci_conn_hash *h = &hdev->conn_hash;
 543         struct hci_conn  *c;
 544
 545         rcu_read_lock();
 546
 547         list_for_each_entry_rcu(c, &h->list, list) {
 548                 if (c->type == type && !bacmp(&c->dst, ba)) {
 549                         rcu_read_unlock();
 550                         return c;
 551                 }
 552         }
 553
 554         rcu_read_unlock();
 555
 556         return NULL;
 557 }
 558
 559 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 560                                                         __u8 type, __u16 state)
 561 {
 562         struct hci_conn_hash *h = &hdev->conn_hash;
 563         struct hci_conn  *c;
 564
 565         rcu_read_lock();
 566
 567         list_for_each_entry_rcu(c, &h->list, list) {
 568                 if (c->type == type && c->state == state) {
 569                         rcu_read_unlock();
 570                         return c;
 571                 }
 572         }
 573
 574         rcu_read_unlock();
 575
 576         return NULL;
 577 }
 578
 579 void hci_disconnect(struct hci_conn *conn, __u8 reason);
 580 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 581 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 582
 583 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 584 int hci_conn_del(struct hci_conn *conn);
 585 void hci_conn_hash_flush(struct hci_dev *hdev);
 586 void hci_conn_check_pending(struct hci_dev *hdev);
 587
 588 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 589 void hci_chan_del(struct hci_chan *chan);
 590 void hci_chan_list_flush(struct hci_conn *conn);
 591 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 592
 593 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 594                              __u8 dst_type, __u8 sec_level, __u8 auth_type);
 595 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 596                                  __u16 setting);
 597 int hci_conn_check_link_mode(struct hci_conn *conn);
 598 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 599 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 600 int hci_conn_change_link_key(struct hci_conn *conn);
 601 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 602
 603 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 604
 605 /*
 606  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 607  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 608  * working or anything else. They just guarantee that the object is available
 609  * and can be dereferenced. So you can use its locks, local variables and any
 610  * other constant data.
 611  * Before accessing runtime data, you _must_ lock the object and then check that
 612  * it is still running. As soon as you release the locks, the connection might
 613  * get dropped, though.
 614  *
 615  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 616  * how long the underlying connection is held. So every channel that runs on the
 617  * hci_conn object calls this to prevent the connection from disappearing. As
 618  * long as you hold a device, you must also guarantee that you have a valid
 619  * reference to the device via hci_conn_get() (or the initial reference from
 620  * hci_conn_add()).
 621  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 622  * break because nobody cares for that. But this means, we cannot use
 623  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 624  */
 625
 626 static inline void hci_conn_get(struct hci_conn *conn)
 627 {
 628         get_device(&conn->dev);
 629 }
 630
 631 static inline void hci_conn_put(struct hci_conn *conn)
 632 {
 633         put_device(&conn->dev);
 634 }
 635
 636 static inline void hci_conn_hold(struct hci_conn *conn)
 637 {
 638         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 639
 640         atomic_inc(&conn->refcnt);
 641         cancel_delayed_work(&conn->disc_work);
 642 }
 643
 644 static inline void hci_conn_drop(struct hci_conn *conn)
 645 {
 646         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 647
 648         if (atomic_dec_and_test(&conn->refcnt)) {
 649                 unsigned long timeo;
 650
 651                 switch (conn->type) {
 652                 case ACL_LINK:
 653                 case LE_LINK:
 654                         del_timer(&conn->idle_timer);
 655                         if (conn->state == BT_CONNECTED) {
 656                                 timeo = conn->disc_timeout;
 657                                 if (!conn->out)
 658                                         timeo *= 2;
 659                         } else {
 660                                 timeo = msecs_to_jiffies(10);
 661                         }
 662                         break;
 663
 664                 case AMP_LINK:
 665                         timeo = conn->disc_timeout;
 666                         break;
 667
 668                 default:
 669                         timeo = msecs_to_jiffies(10);
 670                         break;
 671                 }
 672
 673                 cancel_delayed_work(&conn->disc_work);
 674                 queue_delayed_work(conn->hdev->workqueue,
 675                                    &conn->disc_work, timeo);
 676         }
 677 }
 678
 679 /* ----- HCI Devices ----- */
 680 static inline void hci_dev_put(struct hci_dev *d)
 681 {
 682         BT_DBG("%s orig refcnt %d", d->name,
 683                atomic_read(&d->dev.kobj.kref.refcount));
 684
 685         put_device(&d->dev);
 686 }
 687
 688 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 689 {
 690         BT_DBG("%s orig refcnt %d", d->name,
 691                atomic_read(&d->dev.kobj.kref.refcount));
 692
 693         get_device(&d->dev);
 694         return d;
 695 }
 696
 697 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 698 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 699
 700 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 701 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 702
 703 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 704 {
 705         return dev_get_drvdata(&hdev->dev);
 706 }
 707
 708 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 709 {
 710         dev_set_drvdata(&hdev->dev, data);
 711 }
 712
 713 struct hci_dev *hci_dev_get(int index);
 714 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
 715
 716 struct hci_dev *hci_alloc_dev(void);
 717 void hci_free_dev(struct hci_dev *hdev);
 718 int hci_register_dev(struct hci_dev *hdev);
 719 void hci_unregister_dev(struct hci_dev *hdev);
 720 int hci_suspend_dev(struct hci_dev *hdev);
 721 int hci_resume_dev(struct hci_dev *hdev);
 722 int hci_dev_open(__u16 dev);
 723 int hci_dev_close(__u16 dev);
 724 int hci_dev_reset(__u16 dev);
 725 int hci_dev_reset_stat(__u16 dev);
 726 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 727 int hci_get_dev_list(void __user *arg);
 728 int hci_get_dev_info(void __user *arg);
 729 int hci_get_conn_list(void __user *arg);
 730 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 731 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 732 int hci_inquiry(void __user *arg);
 733
 734 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
 735                                          bdaddr_t *bdaddr);
 736 int hci_blacklist_clear(struct hci_dev *hdev);
 737 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 738 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 739
 740 int hci_uuids_clear(struct hci_dev *hdev);
 741
 742 int hci_link_keys_clear(struct hci_dev *hdev);
 743 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 744 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 745                      bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 746 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 747 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
 748                 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
 749                 __le16 ediv, u8 rand[8]);
 750 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 751                                      u8 addr_type);
 752 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
 753 int hci_smp_ltks_clear(struct hci_dev *hdev);
 754 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 755
 756 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 757 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 758                                                         bdaddr_t *bdaddr);
 759 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 760                                                                 u8 *randomizer);
 761 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 762
 763 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 764
 765 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
 766 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 767 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 768
 769 void hci_init_sysfs(struct hci_dev *hdev);
 770 int hci_add_sysfs(struct hci_dev *hdev);
 771 void hci_del_sysfs(struct hci_dev *hdev);
 772 void hci_conn_init_sysfs(struct hci_conn *conn);
 773 void hci_conn_add_sysfs(struct hci_conn *conn);
 774 void hci_conn_del_sysfs(struct hci_conn *conn);
 775
 776 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
 777
 778 /* ----- LMP capabilities ----- */
 779 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
 780 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
 781 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
 782 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
 783 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
 784 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
 785 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
 786 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
 787 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
 788 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
 789 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
 790 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
 791 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
 792 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
 793 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
 794 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
 795 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
 796 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
 797 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
 798
 799 /* ----- Extended LMP capabilities ----- */
 800 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
 801 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
 802 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
 803
 804 /* ----- HCI protocols ----- */
 805 #define HCI_PROTO_DEFER             0x01
 806
 807 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 808                                         __u8 type, __u8 *flags)
 809 {
 810         switch (type) {
 811         case ACL_LINK:
 812                 return l2cap_connect_ind(hdev, bdaddr);
 813
 814         case SCO_LINK:
 815         case ESCO_LINK:
 816                 return sco_connect_ind(hdev, bdaddr, flags);
 817
 818         default:
 819                 BT_ERR("unknown link type %d", type);
 820                 return -EINVAL;
 821         }
 822 }
 823
 824 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 825 {
 826         switch (conn->type) {
 827         case ACL_LINK:
 828         case LE_LINK:
 829                 l2cap_connect_cfm(conn, status);
 830                 break;
 831
 832         case SCO_LINK:
 833         case ESCO_LINK:
 834                 sco_connect_cfm(conn, status);
 835                 break;
 836
 837         default:
 838                 BT_ERR("unknown link type %d", conn->type);
 839                 break;
 840         }
 841
 842         if (conn->connect_cfm_cb)
 843                 conn->connect_cfm_cb(conn, status);
 844 }
 845
 846 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 847 {
 848         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 849                 return HCI_ERROR_REMOTE_USER_TERM;
 850
 851         return l2cap_disconn_ind(conn);
 852 }
 853
 854 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 855 {
 856         switch (conn->type) {
 857         case ACL_LINK:
 858         case LE_LINK:
 859                 l2cap_disconn_cfm(conn, reason);
 860                 break;
 861
 862         case SCO_LINK:
 863         case ESCO_LINK:
 864                 sco_disconn_cfm(conn, reason);
 865                 break;
 866
 867         /* L2CAP would be handled for BREDR chan */
 868         case AMP_LINK:
 869                 break;
 870
 871         default:
 872                 BT_ERR("unknown link type %d", conn->type);
 873                 break;
 874         }
 875
 876         if (conn->disconn_cfm_cb)
 877                 conn->disconn_cfm_cb(conn, reason);
 878 }
 879
 880 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 881 {
 882         __u8 encrypt;
 883
 884         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 885                 return;
 886
 887         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 888                 return;
 889
 890         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 891         l2cap_security_cfm(conn, status, encrypt);
 892
 893         if (conn->security_cfm_cb)
 894                 conn->security_cfm_cb(conn, status);
 895 }
 896
 897 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 898                                                                 __u8 encrypt)
 899 {
 900         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 901                 return;
 902
 903         l2cap_security_cfm(conn, status, encrypt);
 904
 905         if (conn->security_cfm_cb)
 906                 conn->security_cfm_cb(conn, status);
 907 }
 908
 909 /* ----- HCI callbacks ----- */
 910 struct hci_cb {
 911         struct list_head list;
 912
 913         char *name;
 914
 915         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 916                                                                 __u8 encrypt);
 917         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 918         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 919 };
 920
 921 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 922 {
 923         struct hci_cb *cb;
 924         __u8 encrypt;
 925
 926         hci_proto_auth_cfm(conn, status);
 927
 928         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 929                 return;
 930
 931         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 932
 933         read_lock(&hci_cb_list_lock);
 934         list_for_each_entry(cb, &hci_cb_list, list) {
 935                 if (cb->security_cfm)
 936                         cb->security_cfm(conn, status, encrypt);
 937         }
 938         read_unlock(&hci_cb_list_lock);
 939 }
 940
 941 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 942                                                                 __u8 encrypt)
 943 {
 944         struct hci_cb *cb;
 945
 946         if (conn->sec_level == BT_SECURITY_SDP)
 947                 conn->sec_level = BT_SECURITY_LOW;
 948
 949         if (conn->pending_sec_level > conn->sec_level)
 950                 conn->sec_level = conn->pending_sec_level;
 951
 952         hci_proto_encrypt_cfm(conn, status, encrypt);
 953
 954         read_lock(&hci_cb_list_lock);
 955         list_for_each_entry(cb, &hci_cb_list, list) {
 956                 if (cb->security_cfm)
 957                         cb->security_cfm(conn, status, encrypt);
 958         }
 959         read_unlock(&hci_cb_list_lock);
 960 }
 961
 962 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 963 {
 964         struct hci_cb *cb;
 965
 966         read_lock(&hci_cb_list_lock);
 967         list_for_each_entry(cb, &hci_cb_list, list) {
 968                 if (cb->key_change_cfm)
 969                         cb->key_change_cfm(conn, status);
 970         }
 971         read_unlock(&hci_cb_list_lock);
 972 }
 973
 974 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 975                                                                 __u8 role)
 976 {
 977         struct hci_cb *cb;
 978
 979         read_lock(&hci_cb_list_lock);
 980         list_for_each_entry(cb, &hci_cb_list, list) {
 981                 if (cb->role_switch_cfm)
 982                         cb->role_switch_cfm(conn, status, role);
 983         }
 984         read_unlock(&hci_cb_list_lock);
 985 }
 986
 987 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
 988 {
 989         size_t parsed = 0;
 990
 991         if (data_len < 2)
 992                 return false;
 993
 994         while (parsed < data_len - 1) {
 995                 u8 field_len = data[0];
 996
 997                 if (field_len == 0)
 998                         break;
 999
1000                 parsed += field_len + 1;
1001
1002                 if (parsed > data_len)
1003                         break;
1004
1005                 if (data[1] == type)
1006                         return true;
1007
1008                 data += field_len + 1;
1009         }
1010
1011         return false;
1012 }
1013
1014 int hci_register_cb(struct hci_cb *hcb);
1015 int hci_unregister_cb(struct hci_cb *hcb);
1016
1017 struct hci_request {
1018         struct hci_dev          *hdev;
1019         struct sk_buff_head     cmd_q;
1020
1021         /* If something goes wrong when building the HCI request, the error
1022          * value is stored in this field.
1023          */
1024         int                     err;
1025 };
1026
1027 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1028 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1029 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1030                  const void *param);
1031 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1032                     const void *param, u8 event);
1033 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1034
1035 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1036                                const void *param, u32 timeout);
1037 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1038                                   const void *param, u8 event, u32 timeout);
1039
1040 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1041                  const void *param);
1042 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1043 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1044
1045 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1046
1047 /* ----- HCI Sockets ----- */
1048 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1049 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1050 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1051
1052 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1053
1054 /* Management interface */
1055 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1056 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1057                                          BIT(BDADDR_LE_RANDOM))
1058 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1059                                          BIT(BDADDR_LE_PUBLIC) | \
1060                                          BIT(BDADDR_LE_RANDOM))
1061
1062 /* These LE scan and inquiry parameters were chosen according to LE General
1063  * Discovery Procedure specification.
1064  */
1065 #define DISCOV_LE_SCAN_WIN              0x12
1066 #define DISCOV_LE_SCAN_INT              0x12
1067 #define DISCOV_LE_TIMEOUT               msecs_to_jiffies(10240)
1068 #define DISCOV_INTERLEAVED_TIMEOUT      msecs_to_jiffies(5120)
1069 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1070 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1071
1072 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1073 void mgmt_index_added(struct hci_dev *hdev);
1074 void mgmt_index_removed(struct hci_dev *hdev);
1075 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1076 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1077 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1078 void mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1079 void mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1080 void mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1081 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1082                        bool persistent);
1083 void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1084                            u8 addr_type, u32 flags, u8 *name, u8 name_len,
1085                            u8 *dev_class);
1086 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1087                               u8 link_type, u8 addr_type, u8 reason);
1088 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1089                             u8 link_type, u8 addr_type, u8 status);
1090 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1091                          u8 addr_type, u8 status);
1092 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1093 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1094                                   u8 status);
1095 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1096                                       u8 status);
1097 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1098                               u8 link_type, u8 addr_type, __le32 value,
1099                               u8 confirm_hint);
1100 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1101                                      u8 link_type, u8 addr_type, u8 status);
1102 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1103                                          u8 link_type, u8 addr_type, u8 status);
1104 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1105                               u8 link_type, u8 addr_type);
1106 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1107                                      u8 link_type, u8 addr_type, u8 status);
1108 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1109                                          u8 link_type, u8 addr_type, u8 status);
1110 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1111                              u8 link_type, u8 addr_type, u32 passkey,
1112                              u8 entered);
1113 void mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1114                       u8 addr_type, u8 status);
1115 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1116 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1117 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1118                                     u8 status);
1119 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1120 void mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1121                                              u8 *randomizer, u8 status);
1122 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1123                        u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1124                        u8 ssp, u8 *eir, u16 eir_len);
1125 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1126                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1127 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1128 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1129 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1130 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1131 void mgmt_reenable_advertising(struct hci_dev *hdev);
1132
1133 /* HCI info for socket */
1134 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1135
1136 struct hci_pinfo {
1137         struct bt_sock    bt;
1138         struct hci_dev    *hdev;
1139         struct hci_filter filter;
1140         __u32             cmsg_mask;
1141         unsigned short   channel;
1142 };
1143
1144 /* HCI security filter */
1145 #define HCI_SFLT_MAX_OGF  5
1146
1147 struct hci_sec_filter {
1148         __u32 type_mask;
1149         __u32 event_mask[2];
1150         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1151 };
1152
1153 /* ----- HCI requests ----- */
1154 #define HCI_REQ_DONE      0
1155 #define HCI_REQ_PEND      1
1156 #define HCI_REQ_CANCELED  2
1157
1158 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
1159 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
1160
1161 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1162                                         u16 latency, u16 to_multiplier);
1163 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1164                                                         __u8 ltk[16]);
1165
1166 #define SCO_AIRMODE_MASK       0x0003
1167 #define SCO_AIRMODE_CVSD       0x0000
1168 #define SCO_AIRMODE_TRANSP     0x0003
1169
1170 #endif /* __HCI_CORE_H */