include/net/bluetooth/hci_core.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
   4
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 #ifndef __HCI_CORE_H
  26 #define __HCI_CORE_H
  27
  28 #include <net/bluetooth/hci.h>
  29
  30 /* HCI priority */
  31 #define HCI_PRIO_MAX    7
  32
  33 /* HCI Core structures */
  34 struct inquiry_data {
  35         bdaddr_t        bdaddr;
  36         __u8            pscan_rep_mode;
  37         __u8            pscan_period_mode;
  38         __u8            pscan_mode;
  39         __u8            dev_class[3];
  40         __le16          clock_offset;
  41         __s8            rssi;
  42         __u8            ssp_mode;
  43 };
  44
  45 struct inquiry_entry {
  46         struct list_head        all;            /* inq_cache.all */
  47         struct list_head        list;           /* unknown or resolve */
  48         enum {
  49                 NAME_NOT_KNOWN,
  50                 NAME_NEEDED,
  51                 NAME_PENDING,
  52                 NAME_KNOWN,
  53         } name_state;
  54         __u32                   timestamp;
  55         struct inquiry_data     data;
  56 };
  57
  58 struct discovery_state {
  59         int                     type;
  60         enum {
  61                 DISCOVERY_STOPPED,
  62                 DISCOVERY_STARTING,
  63                 DISCOVERY_FINDING,
  64                 DISCOVERY_RESOLVING,
  65                 DISCOVERY_STOPPING,
  66         } state;
  67         struct list_head        all;    /* All devices found during inquiry */
  68         struct list_head        unknown;        /* Name state not known */
  69         struct list_head        resolve;        /* Name needs to be resolved */
  70         __u32                   timestamp;
  71 };
  72
  73 struct hci_conn_hash {
  74         struct list_head list;
  75         unsigned int     acl_num;
  76         unsigned int     amp_num;
  77         unsigned int     sco_num;
  78         unsigned int     le_num;
  79 };
  80
  81 struct bdaddr_list {
  82         struct list_head list;
  83         bdaddr_t bdaddr;
  84 };
  85
  86 struct bt_uuid {
  87         struct list_head list;
  88         u8 uuid[16];
  89         u8 size;
  90         u8 svc_hint;
  91 };
  92
  93 struct smp_ltk {
  94         struct list_head list;
  95         bdaddr_t bdaddr;
  96         u8 bdaddr_type;
  97         u8 authenticated;
  98         u8 type;
  99         u8 enc_size;
 100         __le16 ediv;
 101         u8 rand[8];
 102         u8 val[16];
 103 } __packed;
 104
 105 struct link_key {
 106         struct list_head list;
 107         bdaddr_t bdaddr;
 108         u8 type;
 109         u8 val[HCI_LINK_KEY_SIZE];
 110         u8 pin_len;
 111 };
 112
 113 struct oob_data {
 114         struct list_head list;
 115         bdaddr_t bdaddr;
 116         u8 hash[16];
 117         u8 randomizer[16];
 118 };
 119
 120 #define HCI_MAX_SHORT_NAME_LENGTH       10
 121
 122 struct amp_assoc {
 123         __u16   len;
 124         __u16   offset;
 125         __u16   rem_len;
 126         __u16   len_so_far;
 127         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
 128 };
 129
 130 #define HCI_MAX_PAGES   3
 131
 132 #define NUM_REASSEMBLY 4
 133 struct hci_dev {
 134         struct list_head list;
 135         struct mutex    lock;
 136
 137         char            name[8];
 138         unsigned long   flags;
 139         __u16           id;
 140         __u8            bus;
 141         __u8            dev_type;
 142         bdaddr_t        bdaddr;
 143         bdaddr_t        static_addr;
 144         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 145         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 146         __u8            eir[HCI_MAX_EIR_LENGTH];
 147         __u8            dev_class[3];
 148         __u8            major_class;
 149         __u8            minor_class;
 150         __u8            max_page;
 151         __u8            features[HCI_MAX_PAGES][8];
 152         __u8            le_features[8];
 153         __u8            le_white_list_size;
 154         __u8            le_states[8];
 155         __u8            commands[64];
 156         __u8            hci_ver;
 157         __u16           hci_rev;
 158         __u8            lmp_ver;
 159         __u16           manufacturer;
 160         __u16           lmp_subver;
 161         __u16           voice_setting;
 162         __u8            io_capability;
 163         __s8            inq_tx_power;
 164         __u16           page_scan_interval;
 165         __u16           page_scan_window;
 166         __u8            page_scan_type;
 167         __u16           le_scan_interval;
 168         __u16           le_scan_window;
 169
 170         __u16           devid_source;
 171         __u16           devid_vendor;
 172         __u16           devid_product;
 173         __u16           devid_version;
 174
 175         __u16           pkt_type;
 176         __u16           esco_type;
 177         __u16           link_policy;
 178         __u16           link_mode;
 179
 180         __u32           idle_timeout;
 181         __u16           sniff_min_interval;
 182         __u16           sniff_max_interval;
 183
 184         __u8            amp_status;
 185         __u32           amp_total_bw;
 186         __u32           amp_max_bw;
 187         __u32           amp_min_latency;
 188         __u32           amp_max_pdu;
 189         __u8            amp_type;
 190         __u16           amp_pal_cap;
 191         __u16           amp_assoc_size;
 192         __u32           amp_max_flush_to;
 193         __u32           amp_be_flush_to;
 194
 195         struct amp_assoc        loc_assoc;
 196
 197         __u8            flow_ctl_mode;
 198
 199         unsigned int    auto_accept_delay;
 200
 201         unsigned long   quirks;
 202
 203         atomic_t        cmd_cnt;
 204         unsigned int    acl_cnt;
 205         unsigned int    sco_cnt;
 206         unsigned int    le_cnt;
 207
 208         unsigned int    acl_mtu;
 209         unsigned int    sco_mtu;
 210         unsigned int    le_mtu;
 211         unsigned int    acl_pkts;
 212         unsigned int    sco_pkts;
 213         unsigned int    le_pkts;
 214
 215         __u16           block_len;
 216         __u16           block_mtu;
 217         __u16           num_blocks;
 218         __u16           block_cnt;
 219
 220         unsigned long   acl_last_tx;
 221         unsigned long   sco_last_tx;
 222         unsigned long   le_last_tx;
 223
 224         struct workqueue_struct *workqueue;
 225         struct workqueue_struct *req_workqueue;
 226
 227         struct work_struct      power_on;
 228         struct delayed_work     power_off;
 229
 230         __u16                   discov_timeout;
 231         struct delayed_work     discov_off;
 232
 233         struct delayed_work     service_cache;
 234
 235         struct timer_list       cmd_timer;
 236
 237         struct work_struct      rx_work;
 238         struct work_struct      cmd_work;
 239         struct work_struct      tx_work;
 240
 241         struct sk_buff_head     rx_q;
 242         struct sk_buff_head     raw_q;
 243         struct sk_buff_head     cmd_q;
 244
 245         struct sk_buff          *recv_evt;
 246         struct sk_buff          *sent_cmd;
 247         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 248
 249         struct mutex            req_lock;
 250         wait_queue_head_t       req_wait_q;
 251         __u32                   req_status;
 252         __u32                   req_result;
 253
 254         struct list_head        mgmt_pending;
 255
 256         struct discovery_state  discovery;
 257         struct hci_conn_hash    conn_hash;
 258         struct list_head        blacklist;
 259
 260         struct list_head        uuids;
 261
 262         struct list_head        link_keys;
 263
 264         struct list_head        long_term_keys;
 265
 266         struct list_head        remote_oob_data;
 267
 268         struct hci_dev_stats    stat;
 269
 270         atomic_t                promisc;
 271
 272         struct dentry           *debugfs;
 273
 274         struct device           dev;
 275
 276         struct rfkill           *rfkill;
 277
 278         unsigned long           dev_flags;
 279
 280         struct delayed_work     le_scan_disable;
 281
 282         __s8                    adv_tx_power;
 283         __u8                    adv_data[HCI_MAX_AD_LENGTH];
 284         __u8                    adv_data_len;
 285
 286         int (*open)(struct hci_dev *hdev);
 287         int (*close)(struct hci_dev *hdev);
 288         int (*flush)(struct hci_dev *hdev);
 289         int (*setup)(struct hci_dev *hdev);
 290         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 291         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 292 };
 293
 294 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 295
 296 struct hci_conn {
 297         struct list_head list;
 298
 299         atomic_t        refcnt;
 300
 301         bdaddr_t        dst;
 302         __u8            dst_type;
 303         __u16           handle;
 304         __u16           state;
 305         __u8            mode;
 306         __u8            type;
 307         bool            out;
 308         __u8            attempt;
 309         __u8            dev_class[3];
 310         __u8            features[HCI_MAX_PAGES][8];
 311         __u16           interval;
 312         __u16           pkt_type;
 313         __u16           link_policy;
 314         __u32           link_mode;
 315         __u8            key_type;
 316         __u8            auth_type;
 317         __u8            sec_level;
 318         __u8            pending_sec_level;
 319         __u8            pin_length;
 320         __u8            enc_key_size;
 321         __u8            io_capability;
 322         __u32           passkey_notify;
 323         __u8            passkey_entered;
 324         __u16           disc_timeout;
 325         __u16           setting;
 326         unsigned long   flags;
 327
 328         __u8            remote_cap;
 329         __u8            remote_auth;
 330         __u8            remote_id;
 331         bool            flush_key;
 332
 333         unsigned int    sent;
 334
 335         struct sk_buff_head data_q;
 336         struct list_head chan_list;
 337
 338         struct delayed_work disc_work;
 339         struct timer_list idle_timer;
 340         struct timer_list auto_accept_timer;
 341
 342         struct device   dev;
 343
 344         struct hci_dev  *hdev;
 345         void            *l2cap_data;
 346         void            *sco_data;
 347         void            *smp_conn;
 348         struct amp_mgr  *amp_mgr;
 349
 350         struct hci_conn *link;
 351
 352         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 353         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 354         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 355 };
 356
 357 struct hci_chan {
 358         struct list_head list;
 359         __u16 handle;
 360         struct hci_conn *conn;
 361         struct sk_buff_head data_q;
 362         unsigned int    sent;
 363         __u8            state;
 364 };
 365
 366 extern struct list_head hci_dev_list;
 367 extern struct list_head hci_cb_list;
 368 extern rwlock_t hci_dev_list_lock;
 369 extern rwlock_t hci_cb_list_lock;
 370
 371 /* ----- HCI interface to upper protocols ----- */
 372 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 373 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 374 extern int l2cap_disconn_ind(struct hci_conn *hcon);
 375 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 376 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 377 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
 378                               u16 flags);
 379
 380 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 381 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 382 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 383 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 384
 385 /* ----- Inquiry cache ----- */
 386 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 387 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 388
 389 static inline void discovery_init(struct hci_dev *hdev)
 390 {
 391         hdev->discovery.state = DISCOVERY_STOPPED;
 392         INIT_LIST_HEAD(&hdev->discovery.all);
 393         INIT_LIST_HEAD(&hdev->discovery.unknown);
 394         INIT_LIST_HEAD(&hdev->discovery.resolve);
 395 }
 396
 397 bool hci_discovery_active(struct hci_dev *hdev);
 398
 399 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 400
 401 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 402 {
 403         return list_empty(&hdev->discovery.all);
 404 }
 405
 406 static inline long inquiry_cache_age(struct hci_dev *hdev)
 407 {
 408         struct discovery_state *c = &hdev->discovery;
 409         return jiffies - c->timestamp;
 410 }
 411
 412 static inline long inquiry_entry_age(struct inquiry_entry *e)
 413 {
 414         return jiffies - e->timestamp;
 415 }
 416
 417 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 418                                                bdaddr_t *bdaddr);
 419 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 420                                                        bdaddr_t *bdaddr);
 421 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 422                                                        bdaddr_t *bdaddr,
 423                                                        int state);
 424 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 425                                       struct inquiry_entry *ie);
 426 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 427                               bool name_known, bool *ssp);
 428 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 429
 430 /* ----- HCI Connections ----- */
 431 enum {
 432         HCI_CONN_AUTH_PEND,
 433         HCI_CONN_REAUTH_PEND,
 434         HCI_CONN_ENCRYPT_PEND,
 435         HCI_CONN_RSWITCH_PEND,
 436         HCI_CONN_MODE_CHANGE_PEND,
 437         HCI_CONN_SCO_SETUP_PEND,
 438         HCI_CONN_LE_SMP_PEND,
 439         HCI_CONN_MGMT_CONNECTED,
 440         HCI_CONN_SSP_ENABLED,
 441         HCI_CONN_POWER_SAVE,
 442         HCI_CONN_REMOTE_OOB,
 443 };
 444
 445 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 446 {
 447         struct hci_dev *hdev = conn->hdev;
 448         return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 449                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 450 }
 451
 452 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 453 {
 454         struct hci_conn_hash *h = &hdev->conn_hash;
 455         list_add_rcu(&c->list, &h->list);
 456         switch (c->type) {
 457         case ACL_LINK:
 458                 h->acl_num++;
 459                 break;
 460         case AMP_LINK:
 461                 h->amp_num++;
 462                 break;
 463         case LE_LINK:
 464                 h->le_num++;
 465                 break;
 466         case SCO_LINK:
 467         case ESCO_LINK:
 468                 h->sco_num++;
 469                 break;
 470         }
 471 }
 472
 473 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 474 {
 475         struct hci_conn_hash *h = &hdev->conn_hash;
 476
 477         list_del_rcu(&c->list);
 478         synchronize_rcu();
 479
 480         switch (c->type) {
 481         case ACL_LINK:
 482                 h->acl_num--;
 483                 break;
 484         case AMP_LINK:
 485                 h->amp_num--;
 486                 break;
 487         case LE_LINK:
 488                 h->le_num--;
 489                 break;
 490         case SCO_LINK:
 491         case ESCO_LINK:
 492                 h->sco_num--;
 493                 break;
 494         }
 495 }
 496
 497 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 498 {
 499         struct hci_conn_hash *h = &hdev->conn_hash;
 500         switch (type) {
 501         case ACL_LINK:
 502                 return h->acl_num;
 503         case AMP_LINK:
 504                 return h->amp_num;
 505         case LE_LINK:
 506                 return h->le_num;
 507         case SCO_LINK:
 508         case ESCO_LINK:
 509                 return h->sco_num;
 510         default:
 511                 return 0;
 512         }
 513 }
 514
 515 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 516                                                                 __u16 handle)
 517 {
 518         struct hci_conn_hash *h = &hdev->conn_hash;
 519         struct hci_conn  *c;
 520
 521         rcu_read_lock();
 522
 523         list_for_each_entry_rcu(c, &h->list, list) {
 524                 if (c->handle == handle) {
 525                         rcu_read_unlock();
 526                         return c;
 527                 }
 528         }
 529         rcu_read_unlock();
 530
 531         return NULL;
 532 }
 533
 534 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 535                                                         __u8 type, bdaddr_t *ba)
 536 {
 537         struct hci_conn_hash *h = &hdev->conn_hash;
 538         struct hci_conn  *c;
 539
 540         rcu_read_lock();
 541
 542         list_for_each_entry_rcu(c, &h->list, list) {
 543                 if (c->type == type && !bacmp(&c->dst, ba)) {
 544                         rcu_read_unlock();
 545                         return c;
 546                 }
 547         }
 548
 549         rcu_read_unlock();
 550
 551         return NULL;
 552 }
 553
 554 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 555                                                         __u8 type, __u16 state)
 556 {
 557         struct hci_conn_hash *h = &hdev->conn_hash;
 558         struct hci_conn  *c;
 559
 560         rcu_read_lock();
 561
 562         list_for_each_entry_rcu(c, &h->list, list) {
 563                 if (c->type == type && c->state == state) {
 564                         rcu_read_unlock();
 565                         return c;
 566                 }
 567         }
 568
 569         rcu_read_unlock();
 570
 571         return NULL;
 572 }
 573
 574 void hci_disconnect(struct hci_conn *conn, __u8 reason);
 575 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 576 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 577
 578 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 579 int hci_conn_del(struct hci_conn *conn);
 580 void hci_conn_hash_flush(struct hci_dev *hdev);
 581 void hci_conn_check_pending(struct hci_dev *hdev);
 582
 583 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 584 void hci_chan_del(struct hci_chan *chan);
 585 void hci_chan_list_flush(struct hci_conn *conn);
 586 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 587
 588 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 589                              __u8 dst_type, __u8 sec_level, __u8 auth_type);
 590 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 591                                  __u16 setting);
 592 int hci_conn_check_link_mode(struct hci_conn *conn);
 593 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 594 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 595 int hci_conn_change_link_key(struct hci_conn *conn);
 596 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 597
 598 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 599
 600 /*
 601  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 602  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 603  * working or anything else. They just guarantee that the object is available
 604  * and can be dereferenced. So you can use its locks, local variables and any
 605  * other constant data.
 606  * Before accessing runtime data, you _must_ lock the object and then check that
 607  * it is still running. As soon as you release the locks, the connection might
 608  * get dropped, though.
 609  *
 610  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 611  * how long the underlying connection is held. So every channel that runs on the
 612  * hci_conn object calls this to prevent the connection from disappearing. As
 613  * long as you hold a device, you must also guarantee that you have a valid
 614  * reference to the device via hci_conn_get() (or the initial reference from
 615  * hci_conn_add()).
 616  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 617  * break because nobody cares for that. But this means, we cannot use
 618  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 619  */
 620
 621 static inline void hci_conn_get(struct hci_conn *conn)
 622 {
 623         get_device(&conn->dev);
 624 }
 625
 626 static inline void hci_conn_put(struct hci_conn *conn)
 627 {
 628         put_device(&conn->dev);
 629 }
 630
 631 static inline void hci_conn_hold(struct hci_conn *conn)
 632 {
 633         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 634
 635         atomic_inc(&conn->refcnt);
 636         cancel_delayed_work(&conn->disc_work);
 637 }
 638
 639 static inline void hci_conn_drop(struct hci_conn *conn)
 640 {
 641         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 642
 643         if (atomic_dec_and_test(&conn->refcnt)) {
 644                 unsigned long timeo;
 645
 646                 switch (conn->type) {
 647                 case ACL_LINK:
 648                 case LE_LINK:
 649                         del_timer(&conn->idle_timer);
 650                         if (conn->state == BT_CONNECTED) {
 651                                 timeo = conn->disc_timeout;
 652                                 if (!conn->out)
 653                                         timeo *= 2;
 654                         } else {
 655                                 timeo = msecs_to_jiffies(10);
 656                         }
 657                         break;
 658
 659                 case AMP_LINK:
 660                         timeo = conn->disc_timeout;
 661                         break;
 662
 663                 default:
 664                         timeo = msecs_to_jiffies(10);
 665                         break;
 666                 }
 667
 668                 cancel_delayed_work(&conn->disc_work);
 669                 queue_delayed_work(conn->hdev->workqueue,
 670                                    &conn->disc_work, timeo);
 671         }
 672 }
 673
 674 /* ----- HCI Devices ----- */
 675 static inline void hci_dev_put(struct hci_dev *d)
 676 {
 677         BT_DBG("%s orig refcnt %d", d->name,
 678                atomic_read(&d->dev.kobj.kref.refcount));
 679
 680         put_device(&d->dev);
 681 }
 682
 683 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 684 {
 685         BT_DBG("%s orig refcnt %d", d->name,
 686                atomic_read(&d->dev.kobj.kref.refcount));
 687
 688         get_device(&d->dev);
 689         return d;
 690 }
 691
 692 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 693 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 694
 695 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 696 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 697
 698 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 699 {
 700         return dev_get_drvdata(&hdev->dev);
 701 }
 702
 703 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 704 {
 705         dev_set_drvdata(&hdev->dev, data);
 706 }
 707
 708 struct hci_dev *hci_dev_get(int index);
 709 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
 710
 711 struct hci_dev *hci_alloc_dev(void);
 712 void hci_free_dev(struct hci_dev *hdev);
 713 int hci_register_dev(struct hci_dev *hdev);
 714 void hci_unregister_dev(struct hci_dev *hdev);
 715 int hci_suspend_dev(struct hci_dev *hdev);
 716 int hci_resume_dev(struct hci_dev *hdev);
 717 int hci_dev_open(__u16 dev);
 718 int hci_dev_close(__u16 dev);
 719 int hci_dev_reset(__u16 dev);
 720 int hci_dev_reset_stat(__u16 dev);
 721 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 722 int hci_get_dev_list(void __user *arg);
 723 int hci_get_dev_info(void __user *arg);
 724 int hci_get_conn_list(void __user *arg);
 725 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 726 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 727 int hci_inquiry(void __user *arg);
 728
 729 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
 730                                          bdaddr_t *bdaddr);
 731 int hci_blacklist_clear(struct hci_dev *hdev);
 732 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 733 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 734
 735 int hci_uuids_clear(struct hci_dev *hdev);
 736
 737 int hci_link_keys_clear(struct hci_dev *hdev);
 738 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 739 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 740                      bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 741 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 742 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
 743                 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
 744                 __le16 ediv, u8 rand[8]);
 745 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 746                                      u8 addr_type);
 747 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
 748 int hci_smp_ltks_clear(struct hci_dev *hdev);
 749 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 750
 751 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 752 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 753                                                         bdaddr_t *bdaddr);
 754 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 755                                                                 u8 *randomizer);
 756 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 757
 758 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 759
 760 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
 761 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 762 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 763
 764 void hci_init_sysfs(struct hci_dev *hdev);
 765 int hci_add_sysfs(struct hci_dev *hdev);
 766 void hci_del_sysfs(struct hci_dev *hdev);
 767 void hci_conn_init_sysfs(struct hci_conn *conn);
 768 void hci_conn_add_sysfs(struct hci_conn *conn);
 769 void hci_conn_del_sysfs(struct hci_conn *conn);
 770
 771 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
 772
 773 /* ----- LMP capabilities ----- */
 774 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
 775 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
 776 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
 777 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
 778 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
 779 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
 780 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
 781 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
 782 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
 783 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
 784 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
 785 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
 786 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
 787 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
 788 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
 789 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
 790 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
 791 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
 792 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
 793
 794 /* ----- Extended LMP capabilities ----- */
 795 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
 796 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
 797 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
 798
 799 /* ----- HCI protocols ----- */
 800 #define HCI_PROTO_DEFER             0x01
 801
 802 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 803                                         __u8 type, __u8 *flags)
 804 {
 805         switch (type) {
 806         case ACL_LINK:
 807                 return l2cap_connect_ind(hdev, bdaddr);
 808
 809         case SCO_LINK:
 810         case ESCO_LINK:
 811                 return sco_connect_ind(hdev, bdaddr, flags);
 812
 813         default:
 814                 BT_ERR("unknown link type %d", type);
 815                 return -EINVAL;
 816         }
 817 }
 818
 819 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 820 {
 821         switch (conn->type) {
 822         case ACL_LINK:
 823         case LE_LINK:
 824                 l2cap_connect_cfm(conn, status);
 825                 break;
 826
 827         case SCO_LINK:
 828         case ESCO_LINK:
 829                 sco_connect_cfm(conn, status);
 830                 break;
 831
 832         default:
 833                 BT_ERR("unknown link type %d", conn->type);
 834                 break;
 835         }
 836
 837         if (conn->connect_cfm_cb)
 838                 conn->connect_cfm_cb(conn, status);
 839 }
 840
 841 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 842 {
 843         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 844                 return HCI_ERROR_REMOTE_USER_TERM;
 845
 846         return l2cap_disconn_ind(conn);
 847 }
 848
 849 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 850 {
 851         switch (conn->type) {
 852         case ACL_LINK:
 853         case LE_LINK:
 854                 l2cap_disconn_cfm(conn, reason);
 855                 break;
 856
 857         case SCO_LINK:
 858         case ESCO_LINK:
 859                 sco_disconn_cfm(conn, reason);
 860                 break;
 861
 862         /* L2CAP would be handled for BREDR chan */
 863         case AMP_LINK:
 864                 break;
 865
 866         default:
 867                 BT_ERR("unknown link type %d", conn->type);
 868                 break;
 869         }
 870
 871         if (conn->disconn_cfm_cb)
 872                 conn->disconn_cfm_cb(conn, reason);
 873 }
 874
 875 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 876 {
 877         __u8 encrypt;
 878
 879         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 880                 return;
 881
 882         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 883                 return;
 884
 885         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 886         l2cap_security_cfm(conn, status, encrypt);
 887
 888         if (conn->security_cfm_cb)
 889                 conn->security_cfm_cb(conn, status);
 890 }
 891
 892 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 893                                                                 __u8 encrypt)
 894 {
 895         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 896                 return;
 897
 898         l2cap_security_cfm(conn, status, encrypt);
 899
 900         if (conn->security_cfm_cb)
 901                 conn->security_cfm_cb(conn, status);
 902 }
 903
 904 /* ----- HCI callbacks ----- */
 905 struct hci_cb {
 906         struct list_head list;
 907
 908         char *name;
 909
 910         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 911                                                                 __u8 encrypt);
 912         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 913         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 914 };
 915
 916 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 917 {
 918         struct hci_cb *cb;
 919         __u8 encrypt;
 920
 921         hci_proto_auth_cfm(conn, status);
 922
 923         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 924                 return;
 925
 926         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 927
 928         read_lock(&hci_cb_list_lock);
 929         list_for_each_entry(cb, &hci_cb_list, list) {
 930                 if (cb->security_cfm)
 931                         cb->security_cfm(conn, status, encrypt);
 932         }
 933         read_unlock(&hci_cb_list_lock);
 934 }
 935
 936 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 937                                                                 __u8 encrypt)
 938 {
 939         struct hci_cb *cb;
 940
 941         if (conn->sec_level == BT_SECURITY_SDP)
 942                 conn->sec_level = BT_SECURITY_LOW;
 943
 944         if (conn->pending_sec_level > conn->sec_level)
 945                 conn->sec_level = conn->pending_sec_level;
 946
 947         hci_proto_encrypt_cfm(conn, status, encrypt);
 948
 949         read_lock(&hci_cb_list_lock);
 950         list_for_each_entry(cb, &hci_cb_list, list) {
 951                 if (cb->security_cfm)
 952                         cb->security_cfm(conn, status, encrypt);
 953         }
 954         read_unlock(&hci_cb_list_lock);
 955 }
 956
 957 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 958 {
 959         struct hci_cb *cb;
 960
 961         read_lock(&hci_cb_list_lock);
 962         list_for_each_entry(cb, &hci_cb_list, list) {
 963                 if (cb->key_change_cfm)
 964                         cb->key_change_cfm(conn, status);
 965         }
 966         read_unlock(&hci_cb_list_lock);
 967 }
 968
 969 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 970                                                                 __u8 role)
 971 {
 972         struct hci_cb *cb;
 973
 974         read_lock(&hci_cb_list_lock);
 975         list_for_each_entry(cb, &hci_cb_list, list) {
 976                 if (cb->role_switch_cfm)
 977                         cb->role_switch_cfm(conn, status, role);
 978         }
 979         read_unlock(&hci_cb_list_lock);
 980 }
 981
 982 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
 983 {
 984         size_t parsed = 0;
 985
 986         if (data_len < 2)
 987                 return false;
 988
 989         while (parsed < data_len - 1) {
 990                 u8 field_len = data[0];
 991
 992                 if (field_len == 0)
 993                         break;
 994
 995                 parsed += field_len + 1;
 996
 997                 if (parsed > data_len)
 998                         break;
 999
1000                 if (data[1] == type)
1001                         return true;
1002
1003                 data += field_len + 1;
1004         }
1005
1006         return false;
1007 }
1008
1009 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
1010 {
1011         size_t parsed = 0;
1012
1013         while (parsed < eir_len) {
1014                 u8 field_len = eir[0];
1015
1016                 if (field_len == 0)
1017                         return parsed;
1018
1019                 parsed += field_len + 1;
1020                 eir += field_len + 1;
1021         }
1022
1023         return eir_len;
1024 }
1025
1026 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1027                                   u8 data_len)
1028 {
1029         eir[eir_len++] = sizeof(type) + data_len;
1030         eir[eir_len++] = type;
1031         memcpy(&eir[eir_len], data, data_len);
1032         eir_len += data_len;
1033
1034         return eir_len;
1035 }
1036
1037 int hci_register_cb(struct hci_cb *hcb);
1038 int hci_unregister_cb(struct hci_cb *hcb);
1039
1040 struct hci_request {
1041         struct hci_dev          *hdev;
1042         struct sk_buff_head     cmd_q;
1043
1044         /* If something goes wrong when building the HCI request, the error
1045          * value is stored in this field.
1046          */
1047         int                     err;
1048 };
1049
1050 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1051 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1052 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1053                  const void *param);
1054 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1055                     const void *param, u8 event);
1056 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1057
1058 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1059                                const void *param, u32 timeout);
1060 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1061                                   const void *param, u8 event, u32 timeout);
1062
1063 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1064                  const void *param);
1065 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1066 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1067
1068 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1069
1070 /* ----- HCI Sockets ----- */
1071 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1072 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1073 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1074
1075 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1076
1077 /* Management interface */
1078 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1079 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1080                                          BIT(BDADDR_LE_RANDOM))
1081 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1082                                          BIT(BDADDR_LE_PUBLIC) | \
1083                                          BIT(BDADDR_LE_RANDOM))
1084
1085 /* These LE scan and inquiry parameters were chosen according to LE General
1086  * Discovery Procedure specification.
1087  */
1088 #define DISCOV_LE_SCAN_WIN              0x12
1089 #define DISCOV_LE_SCAN_INT              0x12
1090 #define DISCOV_LE_TIMEOUT               msecs_to_jiffies(10240)
1091 #define DISCOV_INTERLEAVED_TIMEOUT      msecs_to_jiffies(5120)
1092 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1093 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1094
1095 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1096 void mgmt_index_added(struct hci_dev *hdev);
1097 void mgmt_index_removed(struct hci_dev *hdev);
1098 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1099 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1100 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1101 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1102 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1103 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1104                       bool persistent);
1105 void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1106                            u8 addr_type, u32 flags, u8 *name, u8 name_len,
1107                            u8 *dev_class);
1108 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1109                               u8 link_type, u8 addr_type, u8 reason);
1110 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1111                             u8 link_type, u8 addr_type, u8 status);
1112 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1113                          u8 addr_type, u8 status);
1114 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1115 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1116                                  u8 status);
1117 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1118                                      u8 status);
1119 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1120                               u8 link_type, u8 addr_type, __le32 value,
1121                               u8 confirm_hint);
1122 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1123                                      u8 link_type, u8 addr_type, u8 status);
1124 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1125                                          u8 link_type, u8 addr_type, u8 status);
1126 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1127                               u8 link_type, u8 addr_type);
1128 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1129                                      u8 link_type, u8 addr_type, u8 status);
1130 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1131                                          u8 link_type, u8 addr_type, u8 status);
1132 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1133                              u8 link_type, u8 addr_type, u32 passkey,
1134                              u8 entered);
1135 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1136                      u8 addr_type, u8 status);
1137 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1138 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1139 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1140                                    u8 status);
1141 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1142 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1143                                             u8 *randomizer, u8 status);
1144 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1145                        u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1146                        u8 ssp, u8 *eir, u16 eir_len);
1147 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1148                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1149 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1150 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1151 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1152 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1153 void mgmt_reenable_advertising(struct hci_dev *hdev);
1154
1155 /* HCI info for socket */
1156 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1157
1158 struct hci_pinfo {
1159         struct bt_sock    bt;
1160         struct hci_dev    *hdev;
1161         struct hci_filter filter;
1162         __u32             cmsg_mask;
1163         unsigned short   channel;
1164 };
1165
1166 /* HCI security filter */
1167 #define HCI_SFLT_MAX_OGF  5
1168
1169 struct hci_sec_filter {
1170         __u32 type_mask;
1171         __u32 event_mask[2];
1172         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1173 };
1174
1175 /* ----- HCI requests ----- */
1176 #define HCI_REQ_DONE      0
1177 #define HCI_REQ_PEND      1
1178 #define HCI_REQ_CANCELED  2
1179
1180 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
1181 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
1182
1183 void hci_update_ad(struct hci_request *req);
1184
1185 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1186                                         u16 latency, u16 to_multiplier);
1187 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1188                                                         __u8 ltk[16]);
1189
1190 #define SCO_AIRMODE_MASK       0x0003
1191 #define SCO_AIRMODE_CVSD       0x0000
1192 #define SCO_AIRMODE_TRANSP     0x0003
1193
1194 #endif /* __HCI_CORE_H */