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