include/net/bluetooth/hci_core.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (C) 2000-2001 Qualcomm Incorporated
   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 upper protocols */
  31 #define HCI_PROTO_L2CAP 0
  32 #define HCI_PROTO_SCO   1
  33
  34 /* HCI Core structures */
  35 struct inquiry_data {
  36         bdaddr_t        bdaddr;
  37         __u8            pscan_rep_mode;
  38         __u8            pscan_period_mode;
  39         __u8            pscan_mode;
  40         __u8            dev_class[3];
  41         __le16          clock_offset;
  42         __s8            rssi;
  43         __u8            ssp_mode;
  44 };
  45
  46 struct inquiry_entry {
  47         struct inquiry_entry    *next;
  48         __u32                   timestamp;
  49         struct inquiry_data     data;
  50 };
  51
  52 struct inquiry_cache {
  53         spinlock_t              lock;
  54         __u32                   timestamp;
  55         struct inquiry_entry    *list;
  56 };
  57
  58 struct hci_conn_hash {
  59         struct list_head list;
  60         spinlock_t       lock;
  61         unsigned int     acl_num;
  62         unsigned int     sco_num;
  63 };
  64
  65 struct hci_dev {
  66         struct list_head list;
  67         spinlock_t      lock;
  68         atomic_t        refcnt;
  69
  70         char            name[8];
  71         unsigned long   flags;
  72         __u16           id;
  73         __u8            type;
  74         bdaddr_t        bdaddr;
  75         __u8            dev_name[248];
  76         __u8            dev_class[3];
  77         __u8            features[8];
  78         __u8            commands[64];
  79         __u8            ssp_mode;
  80         __u8            hci_ver;
  81         __u16           hci_rev;
  82         __u16           manufacturer;
  83         __u16           voice_setting;
  84
  85         __u16           pkt_type;
  86         __u16           esco_type;
  87         __u16           link_policy;
  88         __u16           link_mode;
  89
  90         __u32           idle_timeout;
  91         __u16           sniff_min_interval;
  92         __u16           sniff_max_interval;
  93
  94         unsigned long   quirks;
  95
  96         atomic_t        cmd_cnt;
  97         unsigned int    acl_cnt;
  98         unsigned int    sco_cnt;
  99
 100         unsigned int    acl_mtu;
 101         unsigned int    sco_mtu;
 102         unsigned int    acl_pkts;
 103         unsigned int    sco_pkts;
 104
 105         unsigned long   cmd_last_tx;
 106         unsigned long   acl_last_tx;
 107         unsigned long   sco_last_tx;
 108
 109         struct tasklet_struct   cmd_task;
 110         struct tasklet_struct   rx_task;
 111         struct tasklet_struct   tx_task;
 112
 113         struct sk_buff_head     rx_q;
 114         struct sk_buff_head     raw_q;
 115         struct sk_buff_head     cmd_q;
 116
 117         struct sk_buff          *sent_cmd;
 118         struct sk_buff          *reassembly[3];
 119
 120         struct mutex            req_lock;
 121         wait_queue_head_t       req_wait_q;
 122         __u32                   req_status;
 123         __u32                   req_result;
 124
 125         struct inquiry_cache    inq_cache;
 126         struct hci_conn_hash    conn_hash;
 127
 128         struct hci_dev_stats    stat;
 129
 130         struct sk_buff_head     driver_init;
 131
 132         void                    *driver_data;
 133         void                    *core_data;
 134
 135         atomic_t                promisc;
 136
 137         struct device           *parent;
 138         struct device           dev;
 139
 140         struct rfkill           *rfkill;
 141
 142         struct module           *owner;
 143
 144         int (*open)(struct hci_dev *hdev);
 145         int (*close)(struct hci_dev *hdev);
 146         int (*flush)(struct hci_dev *hdev);
 147         int (*send)(struct sk_buff *skb);
 148         void (*destruct)(struct hci_dev *hdev);
 149         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 150         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 151 };
 152
 153 struct hci_conn {
 154         struct list_head list;
 155
 156         atomic_t         refcnt;
 157         spinlock_t       lock;
 158
 159         bdaddr_t         dst;
 160         __u16            handle;
 161         __u16            state;
 162         __u8             mode;
 163         __u8             type;
 164         __u8             out;
 165         __u8             attempt;
 166         __u8             dev_class[3];
 167         __u8             features[8];
 168         __u8             ssp_mode;
 169         __u16            interval;
 170         __u16            pkt_type;
 171         __u16            link_policy;
 172         __u32            link_mode;
 173         __u8             auth_type;
 174         __u8             sec_level;
 175         __u8             power_save;
 176         __u16            disc_timeout;
 177         unsigned long    pend;
 178
 179         unsigned int     sent;
 180
 181         struct sk_buff_head data_q;
 182
 183         struct timer_list disc_timer;
 184         struct timer_list idle_timer;
 185
 186         struct work_struct work_add;
 187         struct work_struct work_del;
 188
 189         struct device   dev;
 190         atomic_t        devref;
 191
 192         struct hci_dev  *hdev;
 193         void            *l2cap_data;
 194         void            *sco_data;
 195         void            *priv;
 196
 197         struct hci_conn *link;
 198 };
 199
 200 extern struct hci_proto *hci_proto[];
 201 extern struct list_head hci_dev_list;
 202 extern struct list_head hci_cb_list;
 203 extern rwlock_t hci_dev_list_lock;
 204 extern rwlock_t hci_cb_list_lock;
 205
 206 /* ----- Inquiry cache ----- */
 207 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   // 30 seconds
 208 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   // 60 seconds
 209
 210 #define inquiry_cache_lock(c)           spin_lock(&c->lock)
 211 #define inquiry_cache_unlock(c)         spin_unlock(&c->lock)
 212 #define inquiry_cache_lock_bh(c)        spin_lock_bh(&c->lock)
 213 #define inquiry_cache_unlock_bh(c)      spin_unlock_bh(&c->lock)
 214
 215 static inline void inquiry_cache_init(struct hci_dev *hdev)
 216 {
 217         struct inquiry_cache *c = &hdev->inq_cache;
 218         spin_lock_init(&c->lock);
 219         c->list = NULL;
 220 }
 221
 222 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 223 {
 224         struct inquiry_cache *c = &hdev->inq_cache;
 225         return (c->list == NULL);
 226 }
 227
 228 static inline long inquiry_cache_age(struct hci_dev *hdev)
 229 {
 230         struct inquiry_cache *c = &hdev->inq_cache;
 231         return jiffies - c->timestamp;
 232 }
 233
 234 static inline long inquiry_entry_age(struct inquiry_entry *e)
 235 {
 236         return jiffies - e->timestamp;
 237 }
 238
 239 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 240 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
 241
 242 /* ----- HCI Connections ----- */
 243 enum {
 244         HCI_CONN_AUTH_PEND,
 245         HCI_CONN_ENCRYPT_PEND,
 246         HCI_CONN_RSWITCH_PEND,
 247         HCI_CONN_MODE_CHANGE_PEND,
 248 };
 249
 250 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 251 {
 252         struct hci_conn_hash *h = &hdev->conn_hash;
 253         INIT_LIST_HEAD(&h->list);
 254         spin_lock_init(&h->lock);
 255         h->acl_num = 0;
 256         h->sco_num = 0;
 257 }
 258
 259 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 260 {
 261         struct hci_conn_hash *h = &hdev->conn_hash;
 262         list_add(&c->list, &h->list);
 263         if (c->type == ACL_LINK)
 264                 h->acl_num++;
 265         else
 266                 h->sco_num++;
 267 }
 268
 269 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 270 {
 271         struct hci_conn_hash *h = &hdev->conn_hash;
 272         list_del(&c->list);
 273         if (c->type == ACL_LINK)
 274                 h->acl_num--;
 275         else
 276                 h->sco_num--;
 277 }
 278
 279 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 280                                         __u16 handle)
 281 {
 282         struct hci_conn_hash *h = &hdev->conn_hash;
 283         struct list_head *p;
 284         struct hci_conn  *c;
 285
 286         list_for_each(p, &h->list) {
 287                 c = list_entry(p, struct hci_conn, list);
 288                 if (c->handle == handle)
 289                         return c;
 290         }
 291         return NULL;
 292 }
 293
 294 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 295                                         __u8 type, bdaddr_t *ba)
 296 {
 297         struct hci_conn_hash *h = &hdev->conn_hash;
 298         struct list_head *p;
 299         struct hci_conn  *c;
 300
 301         list_for_each(p, &h->list) {
 302                 c = list_entry(p, struct hci_conn, list);
 303                 if (c->type == type && !bacmp(&c->dst, ba))
 304                         return c;
 305         }
 306         return NULL;
 307 }
 308
 309 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 310                                         __u8 type, __u16 state)
 311 {
 312         struct hci_conn_hash *h = &hdev->conn_hash;
 313         struct list_head *p;
 314         struct hci_conn  *c;
 315
 316         list_for_each(p, &h->list) {
 317                 c = list_entry(p, struct hci_conn, list);
 318                 if (c->type == type && c->state == state)
 319                         return c;
 320         }
 321         return NULL;
 322 }
 323
 324 void hci_acl_connect(struct hci_conn *conn);
 325 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 326 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 327 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 328
 329 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 330 int hci_conn_del(struct hci_conn *conn);
 331 void hci_conn_hash_flush(struct hci_dev *hdev);
 332 void hci_conn_check_pending(struct hci_dev *hdev);
 333
 334 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type);
 335 int hci_conn_check_link_mode(struct hci_conn *conn);
 336 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 337 int hci_conn_change_link_key(struct hci_conn *conn);
 338 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 339
 340 void hci_conn_enter_active_mode(struct hci_conn *conn);
 341 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
 342
 343 void hci_conn_hold_device(struct hci_conn *conn);
 344 void hci_conn_put_device(struct hci_conn *conn);
 345
 346 static inline void hci_conn_hold(struct hci_conn *conn)
 347 {
 348         atomic_inc(&conn->refcnt);
 349         del_timer(&conn->disc_timer);
 350 }
 351
 352 static inline void hci_conn_put(struct hci_conn *conn)
 353 {
 354         if (atomic_dec_and_test(&conn->refcnt)) {
 355                 unsigned long timeo;
 356                 if (conn->type == ACL_LINK) {
 357                         del_timer(&conn->idle_timer);
 358                         if (conn->state == BT_CONNECTED) {
 359                                 timeo = msecs_to_jiffies(conn->disc_timeout);
 360                                 if (!conn->out)
 361                                         timeo *= 2;
 362                         } else
 363                                 timeo = msecs_to_jiffies(10);
 364                 } else
 365                         timeo = msecs_to_jiffies(10);
 366                 mod_timer(&conn->disc_timer, jiffies + timeo);
 367         }
 368 }
 369
 370 /* ----- HCI Devices ----- */
 371 static inline void __hci_dev_put(struct hci_dev *d)
 372 {
 373         if (atomic_dec_and_test(&d->refcnt))
 374                 d->destruct(d);
 375 }
 376
 377 static inline void hci_dev_put(struct hci_dev *d)
 378 {
 379         __hci_dev_put(d);
 380         module_put(d->owner);
 381 }
 382
 383 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
 384 {
 385         atomic_inc(&d->refcnt);
 386         return d;
 387 }
 388
 389 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 390 {
 391         if (try_module_get(d->owner))
 392                 return __hci_dev_hold(d);
 393         return NULL;
 394 }
 395
 396 #define hci_dev_lock(d)         spin_lock(&d->lock)
 397 #define hci_dev_unlock(d)       spin_unlock(&d->lock)
 398 #define hci_dev_lock_bh(d)      spin_lock_bh(&d->lock)
 399 #define hci_dev_unlock_bh(d)    spin_unlock_bh(&d->lock)
 400
 401 struct hci_dev *hci_dev_get(int index);
 402 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 403
 404 struct hci_dev *hci_alloc_dev(void);
 405 void hci_free_dev(struct hci_dev *hdev);
 406 int hci_register_dev(struct hci_dev *hdev);
 407 int hci_unregister_dev(struct hci_dev *hdev);
 408 int hci_suspend_dev(struct hci_dev *hdev);
 409 int hci_resume_dev(struct hci_dev *hdev);
 410 int hci_dev_open(__u16 dev);
 411 int hci_dev_close(__u16 dev);
 412 int hci_dev_reset(__u16 dev);
 413 int hci_dev_reset_stat(__u16 dev);
 414 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 415 int hci_get_dev_list(void __user *arg);
 416 int hci_get_dev_info(void __user *arg);
 417 int hci_get_conn_list(void __user *arg);
 418 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 419 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 420 int hci_inquiry(void __user *arg);
 421
 422 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 423
 424 int hci_recv_frame(struct sk_buff *skb);
 425 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 426
 427 int hci_register_sysfs(struct hci_dev *hdev);
 428 void hci_unregister_sysfs(struct hci_dev *hdev);
 429 void hci_conn_init_sysfs(struct hci_conn *conn);
 430 void hci_conn_add_sysfs(struct hci_conn *conn);
 431 void hci_conn_del_sysfs(struct hci_conn *conn);
 432
 433 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 434
 435 /* ----- LMP capabilities ----- */
 436 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 437 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 438 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 439 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 440 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 441 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 442
 443 /* ----- HCI protocols ----- */
 444 struct hci_proto {
 445         char            *name;
 446         unsigned int    id;
 447         unsigned long   flags;
 448
 449         void            *priv;
 450
 451         int (*connect_ind)      (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
 452         int (*connect_cfm)      (struct hci_conn *conn, __u8 status);
 453         int (*disconn_ind)      (struct hci_conn *conn);
 454         int (*disconn_cfm)      (struct hci_conn *conn, __u8 reason);
 455         int (*recv_acldata)     (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 456         int (*recv_scodata)     (struct hci_conn *conn, struct sk_buff *skb);
 457         int (*security_cfm)     (struct hci_conn *conn, __u8 status, __u8 encrypt);
 458 };
 459
 460 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
 461 {
 462         register struct hci_proto *hp;
 463         int mask = 0;
 464
 465         hp = hci_proto[HCI_PROTO_L2CAP];
 466         if (hp && hp->connect_ind)
 467                 mask |= hp->connect_ind(hdev, bdaddr, type);
 468
 469         hp = hci_proto[HCI_PROTO_SCO];
 470         if (hp && hp->connect_ind)
 471                 mask |= hp->connect_ind(hdev, bdaddr, type);
 472
 473         return mask;
 474 }
 475
 476 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 477 {
 478         register struct hci_proto *hp;
 479
 480         hp = hci_proto[HCI_PROTO_L2CAP];
 481         if (hp && hp->connect_cfm)
 482                 hp->connect_cfm(conn, status);
 483
 484         hp = hci_proto[HCI_PROTO_SCO];
 485         if (hp && hp->connect_cfm)
 486                 hp->connect_cfm(conn, status);
 487 }
 488
 489 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 490 {
 491         register struct hci_proto *hp;
 492         int reason = 0x13;
 493
 494         hp = hci_proto[HCI_PROTO_L2CAP];
 495         if (hp && hp->disconn_ind)
 496                 reason = hp->disconn_ind(conn);
 497
 498         hp = hci_proto[HCI_PROTO_SCO];
 499         if (hp && hp->disconn_ind)
 500                 reason = hp->disconn_ind(conn);
 501
 502         return reason;
 503 }
 504
 505 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 506 {
 507         register struct hci_proto *hp;
 508
 509         hp = hci_proto[HCI_PROTO_L2CAP];
 510         if (hp && hp->disconn_cfm)
 511                 hp->disconn_cfm(conn, reason);
 512
 513         hp = hci_proto[HCI_PROTO_SCO];
 514         if (hp && hp->disconn_cfm)
 515                 hp->disconn_cfm(conn, reason);
 516 }
 517
 518 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 519 {
 520         register struct hci_proto *hp;
 521         __u8 encrypt;
 522
 523         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 524                 return;
 525
 526         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 527
 528         hp = hci_proto[HCI_PROTO_L2CAP];
 529         if (hp && hp->security_cfm)
 530                 hp->security_cfm(conn, status, encrypt);
 531
 532         hp = hci_proto[HCI_PROTO_SCO];
 533         if (hp && hp->security_cfm)
 534                 hp->security_cfm(conn, status, encrypt);
 535 }
 536
 537 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
 538 {
 539         register struct hci_proto *hp;
 540
 541         hp = hci_proto[HCI_PROTO_L2CAP];
 542         if (hp && hp->security_cfm)
 543                 hp->security_cfm(conn, status, encrypt);
 544
 545         hp = hci_proto[HCI_PROTO_SCO];
 546         if (hp && hp->security_cfm)
 547                 hp->security_cfm(conn, status, encrypt);
 548 }
 549
 550 int hci_register_proto(struct hci_proto *hproto);
 551 int hci_unregister_proto(struct hci_proto *hproto);
 552
 553 /* ----- HCI callbacks ----- */
 554 struct hci_cb {
 555         struct list_head list;
 556
 557         char *name;
 558
 559         void (*security_cfm)    (struct hci_conn *conn, __u8 status, __u8 encrypt);
 560         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 561         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 562 };
 563
 564 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 565 {
 566         struct list_head *p;
 567         __u8 encrypt;
 568
 569         hci_proto_auth_cfm(conn, status);
 570
 571         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 572                 return;
 573
 574         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 575
 576         read_lock_bh(&hci_cb_list_lock);
 577         list_for_each(p, &hci_cb_list) {
 578                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 579                 if (cb->security_cfm)
 580                         cb->security_cfm(conn, status, encrypt);
 581         }
 582         read_unlock_bh(&hci_cb_list_lock);
 583 }
 584
 585 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
 586 {
 587         struct list_head *p;
 588
 589         if (conn->sec_level == BT_SECURITY_SDP)
 590                 conn->sec_level = BT_SECURITY_LOW;
 591
 592         hci_proto_encrypt_cfm(conn, status, encrypt);
 593
 594         read_lock_bh(&hci_cb_list_lock);
 595         list_for_each(p, &hci_cb_list) {
 596                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 597                 if (cb->security_cfm)
 598                         cb->security_cfm(conn, status, encrypt);
 599         }
 600         read_unlock_bh(&hci_cb_list_lock);
 601 }
 602
 603 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 604 {
 605         struct list_head *p;
 606
 607         read_lock_bh(&hci_cb_list_lock);
 608         list_for_each(p, &hci_cb_list) {
 609                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 610                 if (cb->key_change_cfm)
 611                         cb->key_change_cfm(conn, status);
 612         }
 613         read_unlock_bh(&hci_cb_list_lock);
 614 }
 615
 616 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
 617 {
 618         struct list_head *p;
 619
 620         read_lock_bh(&hci_cb_list_lock);
 621         list_for_each(p, &hci_cb_list) {
 622                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 623                 if (cb->role_switch_cfm)
 624                         cb->role_switch_cfm(conn, status, role);
 625         }
 626         read_unlock_bh(&hci_cb_list_lock);
 627 }
 628
 629 int hci_register_cb(struct hci_cb *hcb);
 630 int hci_unregister_cb(struct hci_cb *hcb);
 631
 632 int hci_register_notifier(struct notifier_block *nb);
 633 int hci_unregister_notifier(struct notifier_block *nb);
 634
 635 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 636 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 637 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 638
 639 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 640
 641 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 642
 643 /* ----- HCI Sockets ----- */
 644 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
 645
 646 /* HCI info for socket */
 647 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 648
 649 struct hci_pinfo {
 650         struct bt_sock    bt;
 651         struct hci_dev    *hdev;
 652         struct hci_filter filter;
 653         __u32             cmsg_mask;
 654 };
 655
 656 /* HCI security filter */
 657 #define HCI_SFLT_MAX_OGF  5
 658
 659 struct hci_sec_filter {
 660         __u32 type_mask;
 661         __u32 event_mask[2];
 662         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 663 };
 664
 665 /* ----- HCI requests ----- */
 666 #define HCI_REQ_DONE      0
 667 #define HCI_REQ_PEND      1
 668 #define HCI_REQ_CANCELED  2
 669
 670 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
 671 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
 672
 673 void hci_req_complete(struct hci_dev *hdev, int result);
 674
 675 #endif /* __HCI_CORE_H */