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 semaphore        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 module           *owner;
 141
 142         int (*open)(struct hci_dev *hdev);
 143         int (*close)(struct hci_dev *hdev);
 144         int (*flush)(struct hci_dev *hdev);
 145         int (*send)(struct sk_buff *skb);
 146         void (*destruct)(struct hci_dev *hdev);
 147         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 148         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 149 };
 150
 151 struct hci_conn {
 152         struct list_head list;
 153
 154         atomic_t         refcnt;
 155         spinlock_t       lock;
 156
 157         bdaddr_t         dst;
 158         __u16            handle;
 159         __u16            state;
 160         __u8             mode;
 161         __u8             type;
 162         __u8             out;
 163         __u8             attempt;
 164         __u8             dev_class[3];
 165         __u8             features[8];
 166         __u8             ssp_mode;
 167         __u16            interval;
 168         __u16            pkt_type;
 169         __u16            link_policy;
 170         __u32            link_mode;
 171         __u8             auth_type;
 172         __u8             sec_level;
 173         __u8             power_save;
 174         unsigned long    pend;
 175
 176         unsigned int     sent;
 177
 178         struct sk_buff_head data_q;
 179
 180         struct timer_list disc_timer;
 181         struct timer_list idle_timer;
 182
 183         struct work_struct work;
 184
 185         struct device   dev;
 186
 187         struct hci_dev  *hdev;
 188         void            *l2cap_data;
 189         void            *sco_data;
 190         void            *priv;
 191
 192         struct hci_conn *link;
 193 };
 194
 195 extern struct hci_proto *hci_proto[];
 196 extern struct list_head hci_dev_list;
 197 extern struct list_head hci_cb_list;
 198 extern rwlock_t hci_dev_list_lock;
 199 extern rwlock_t hci_cb_list_lock;
 200
 201 /* ----- Inquiry cache ----- */
 202 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   // 30 seconds
 203 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   // 60 seconds
 204
 205 #define inquiry_cache_lock(c)           spin_lock(&c->lock)
 206 #define inquiry_cache_unlock(c)         spin_unlock(&c->lock)
 207 #define inquiry_cache_lock_bh(c)        spin_lock_bh(&c->lock)
 208 #define inquiry_cache_unlock_bh(c)      spin_unlock_bh(&c->lock)
 209
 210 static inline void inquiry_cache_init(struct hci_dev *hdev)
 211 {
 212         struct inquiry_cache *c = &hdev->inq_cache;
 213         spin_lock_init(&c->lock);
 214         c->list = NULL;
 215 }
 216
 217 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 218 {
 219         struct inquiry_cache *c = &hdev->inq_cache;
 220         return (c->list == NULL);
 221 }
 222
 223 static inline long inquiry_cache_age(struct hci_dev *hdev)
 224 {
 225         struct inquiry_cache *c = &hdev->inq_cache;
 226         return jiffies - c->timestamp;
 227 }
 228
 229 static inline long inquiry_entry_age(struct inquiry_entry *e)
 230 {
 231         return jiffies - e->timestamp;
 232 }
 233
 234 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 235 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
 236
 237 /* ----- HCI Connections ----- */
 238 enum {
 239         HCI_CONN_AUTH_PEND,
 240         HCI_CONN_ENCRYPT_PEND,
 241         HCI_CONN_RSWITCH_PEND,
 242         HCI_CONN_MODE_CHANGE_PEND,
 243 };
 244
 245 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 246 {
 247         struct hci_conn_hash *h = &hdev->conn_hash;
 248         INIT_LIST_HEAD(&h->list);
 249         spin_lock_init(&h->lock);
 250         h->acl_num = 0;
 251         h->sco_num = 0;
 252 }
 253
 254 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 255 {
 256         struct hci_conn_hash *h = &hdev->conn_hash;
 257         list_add(&c->list, &h->list);
 258         if (c->type == ACL_LINK)
 259                 h->acl_num++;
 260         else
 261                 h->sco_num++;
 262 }
 263
 264 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 265 {
 266         struct hci_conn_hash *h = &hdev->conn_hash;
 267         list_del(&c->list);
 268         if (c->type == ACL_LINK)
 269                 h->acl_num--;
 270         else
 271                 h->sco_num--;
 272 }
 273
 274 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 275                                         __u16 handle)
 276 {
 277         struct hci_conn_hash *h = &hdev->conn_hash;
 278         struct list_head *p;
 279         struct hci_conn  *c;
 280
 281         list_for_each(p, &h->list) {
 282                 c = list_entry(p, struct hci_conn, list);
 283                 if (c->handle == handle)
 284                         return c;
 285         }
 286         return NULL;
 287 }
 288
 289 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 290                                         __u8 type, bdaddr_t *ba)
 291 {
 292         struct hci_conn_hash *h = &hdev->conn_hash;
 293         struct list_head *p;
 294         struct hci_conn  *c;
 295
 296         list_for_each(p, &h->list) {
 297                 c = list_entry(p, struct hci_conn, list);
 298                 if (c->type == type && !bacmp(&c->dst, ba))
 299                         return c;
 300         }
 301         return NULL;
 302 }
 303
 304 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 305                                         __u8 type, __u16 state)
 306 {
 307         struct hci_conn_hash *h = &hdev->conn_hash;
 308         struct list_head *p;
 309         struct hci_conn  *c;
 310
 311         list_for_each(p, &h->list) {
 312                 c = list_entry(p, struct hci_conn, list);
 313                 if (c->type == type && c->state == state)
 314                         return c;
 315         }
 316         return NULL;
 317 }
 318
 319 void hci_acl_connect(struct hci_conn *conn);
 320 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 321 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 322 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 323
 324 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 325 int hci_conn_del(struct hci_conn *conn);
 326 void hci_conn_hash_flush(struct hci_dev *hdev);
 327 void hci_conn_check_pending(struct hci_dev *hdev);
 328
 329 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type);
 330 int hci_conn_check_link_mode(struct hci_conn *conn);
 331 int hci_conn_security(struct hci_conn *conn, __u8 sec_level);
 332 int hci_conn_change_link_key(struct hci_conn *conn);
 333 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 334
 335 void hci_conn_enter_active_mode(struct hci_conn *conn);
 336 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
 337
 338 static inline void hci_conn_hold(struct hci_conn *conn)
 339 {
 340         atomic_inc(&conn->refcnt);
 341         del_timer(&conn->disc_timer);
 342 }
 343
 344 static inline void hci_conn_put(struct hci_conn *conn)
 345 {
 346         if (atomic_dec_and_test(&conn->refcnt)) {
 347                 unsigned long timeo;
 348                 if (conn->type == ACL_LINK) {
 349                         del_timer(&conn->idle_timer);
 350                         if (conn->state == BT_CONNECTED) {
 351                                 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT);
 352                                 if (!conn->out)
 353                                         timeo *= 5;
 354                         } else
 355                                 timeo = msecs_to_jiffies(10);
 356                 } else
 357                         timeo = msecs_to_jiffies(10);
 358                 mod_timer(&conn->disc_timer, jiffies + timeo);
 359         }
 360 }
 361
 362 /* ----- HCI tasks ----- */
 363 static inline void hci_sched_cmd(struct hci_dev *hdev)
 364 {
 365         tasklet_schedule(&hdev->cmd_task);
 366 }
 367
 368 static inline void hci_sched_rx(struct hci_dev *hdev)
 369 {
 370         tasklet_schedule(&hdev->rx_task);
 371 }
 372
 373 static inline void hci_sched_tx(struct hci_dev *hdev)
 374 {
 375         tasklet_schedule(&hdev->tx_task);
 376 }
 377
 378 /* ----- HCI Devices ----- */
 379 static inline void __hci_dev_put(struct hci_dev *d)
 380 {
 381         if (atomic_dec_and_test(&d->refcnt))
 382                 d->destruct(d);
 383 }
 384
 385 static inline void hci_dev_put(struct hci_dev *d)
 386 {
 387         __hci_dev_put(d);
 388         module_put(d->owner);
 389 }
 390
 391 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
 392 {
 393         atomic_inc(&d->refcnt);
 394         return d;
 395 }
 396
 397 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 398 {
 399         if (try_module_get(d->owner))
 400                 return __hci_dev_hold(d);
 401         return NULL;
 402 }
 403
 404 #define hci_dev_lock(d)         spin_lock(&d->lock)
 405 #define hci_dev_unlock(d)       spin_unlock(&d->lock)
 406 #define hci_dev_lock_bh(d)      spin_lock_bh(&d->lock)
 407 #define hci_dev_unlock_bh(d)    spin_unlock_bh(&d->lock)
 408
 409 struct hci_dev *hci_dev_get(int index);
 410 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 411
 412 struct hci_dev *hci_alloc_dev(void);
 413 void hci_free_dev(struct hci_dev *hdev);
 414 int hci_register_dev(struct hci_dev *hdev);
 415 int hci_unregister_dev(struct hci_dev *hdev);
 416 int hci_suspend_dev(struct hci_dev *hdev);
 417 int hci_resume_dev(struct hci_dev *hdev);
 418 int hci_dev_open(__u16 dev);
 419 int hci_dev_close(__u16 dev);
 420 int hci_dev_reset(__u16 dev);
 421 int hci_dev_reset_stat(__u16 dev);
 422 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 423 int hci_get_dev_list(void __user *arg);
 424 int hci_get_dev_info(void __user *arg);
 425 int hci_get_conn_list(void __user *arg);
 426 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 427 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 428 int hci_inquiry(void __user *arg);
 429
 430 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 431
 432 /* Receive frame from HCI drivers */
 433 static inline int hci_recv_frame(struct sk_buff *skb)
 434 {
 435         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 436         if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
 437                         && !test_bit(HCI_INIT, &hdev->flags))) {
 438                 kfree_skb(skb);
 439                 return -ENXIO;
 440         }
 441
 442         /* Incomming skb */
 443         bt_cb(skb)->incoming = 1;
 444
 445         /* Time stamp */
 446         __net_timestamp(skb);
 447
 448         /* Queue frame for rx task */
 449         skb_queue_tail(&hdev->rx_q, skb);
 450         hci_sched_rx(hdev);
 451         return 0;
 452 }
 453
 454 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 455
 456 int hci_register_sysfs(struct hci_dev *hdev);
 457 void hci_unregister_sysfs(struct hci_dev *hdev);
 458 void hci_conn_add_sysfs(struct hci_conn *conn);
 459 void hci_conn_del_sysfs(struct hci_conn *conn);
 460
 461 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 462
 463 /* ----- LMP capabilities ----- */
 464 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 465 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 466 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 467 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 468 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 469 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 470
 471 /* ----- HCI protocols ----- */
 472 struct hci_proto {
 473         char            *name;
 474         unsigned int    id;
 475         unsigned long   flags;
 476
 477         void            *priv;
 478
 479         int (*connect_ind)      (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
 480         int (*connect_cfm)      (struct hci_conn *conn, __u8 status);
 481         int (*disconn_ind)      (struct hci_conn *conn, __u8 reason);
 482         int (*recv_acldata)     (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 483         int (*recv_scodata)     (struct hci_conn *conn, struct sk_buff *skb);
 484         int (*security_cfm)     (struct hci_conn *conn, __u8 status, __u8 encrypt);
 485 };
 486
 487 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
 488 {
 489         register struct hci_proto *hp;
 490         int mask = 0;
 491
 492         hp = hci_proto[HCI_PROTO_L2CAP];
 493         if (hp && hp->connect_ind)
 494                 mask |= hp->connect_ind(hdev, bdaddr, type);
 495
 496         hp = hci_proto[HCI_PROTO_SCO];
 497         if (hp && hp->connect_ind)
 498                 mask |= hp->connect_ind(hdev, bdaddr, type);
 499
 500         return mask;
 501 }
 502
 503 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 504 {
 505         register struct hci_proto *hp;
 506
 507         hp = hci_proto[HCI_PROTO_L2CAP];
 508         if (hp && hp->connect_cfm)
 509                 hp->connect_cfm(conn, status);
 510
 511         hp = hci_proto[HCI_PROTO_SCO];
 512         if (hp && hp->connect_cfm)
 513                 hp->connect_cfm(conn, status);
 514 }
 515
 516 static inline void hci_proto_disconn_ind(struct hci_conn *conn, __u8 reason)
 517 {
 518         register struct hci_proto *hp;
 519
 520         hp = hci_proto[HCI_PROTO_L2CAP];
 521         if (hp && hp->disconn_ind)
 522                 hp->disconn_ind(conn, reason);
 523
 524         hp = hci_proto[HCI_PROTO_SCO];
 525         if (hp && hp->disconn_ind)
 526                 hp->disconn_ind(conn, reason);
 527 }
 528
 529 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 530 {
 531         register struct hci_proto *hp;
 532         __u8 encrypt;
 533
 534         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 535                 return;
 536
 537         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 538
 539         hp = hci_proto[HCI_PROTO_L2CAP];
 540         if (hp && hp->security_cfm)
 541                 hp->security_cfm(conn, status, encrypt);
 542
 543         hp = hci_proto[HCI_PROTO_SCO];
 544         if (hp && hp->security_cfm)
 545                 hp->security_cfm(conn, status, encrypt);
 546 }
 547
 548 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
 549 {
 550         register struct hci_proto *hp;
 551
 552         hp = hci_proto[HCI_PROTO_L2CAP];
 553         if (hp && hp->security_cfm)
 554                 hp->security_cfm(conn, status, encrypt);
 555
 556         hp = hci_proto[HCI_PROTO_SCO];
 557         if (hp && hp->security_cfm)
 558                 hp->security_cfm(conn, status, encrypt);
 559 }
 560
 561 int hci_register_proto(struct hci_proto *hproto);
 562 int hci_unregister_proto(struct hci_proto *hproto);
 563
 564 /* ----- HCI callbacks ----- */
 565 struct hci_cb {
 566         struct list_head list;
 567
 568         char *name;
 569
 570         void (*security_cfm)    (struct hci_conn *conn, __u8 status, __u8 encrypt);
 571         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 572         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 573 };
 574
 575 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 576 {
 577         struct list_head *p;
 578         __u8 encrypt;
 579
 580         hci_proto_auth_cfm(conn, status);
 581
 582         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 583                 return;
 584
 585         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 586
 587         read_lock_bh(&hci_cb_list_lock);
 588         list_for_each(p, &hci_cb_list) {
 589                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 590                 if (cb->security_cfm)
 591                         cb->security_cfm(conn, status, encrypt);
 592         }
 593         read_unlock_bh(&hci_cb_list_lock);
 594 }
 595
 596 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
 597 {
 598         struct list_head *p;
 599
 600         hci_proto_encrypt_cfm(conn, status, encrypt);
 601
 602         read_lock_bh(&hci_cb_list_lock);
 603         list_for_each(p, &hci_cb_list) {
 604                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 605                 if (cb->security_cfm)
 606                         cb->security_cfm(conn, status, encrypt);
 607         }
 608         read_unlock_bh(&hci_cb_list_lock);
 609 }
 610
 611 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 612 {
 613         struct list_head *p;
 614
 615         read_lock_bh(&hci_cb_list_lock);
 616         list_for_each(p, &hci_cb_list) {
 617                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 618                 if (cb->key_change_cfm)
 619                         cb->key_change_cfm(conn, status);
 620         }
 621         read_unlock_bh(&hci_cb_list_lock);
 622 }
 623
 624 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
 625 {
 626         struct list_head *p;
 627
 628         read_lock_bh(&hci_cb_list_lock);
 629         list_for_each(p, &hci_cb_list) {
 630                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 631                 if (cb->role_switch_cfm)
 632                         cb->role_switch_cfm(conn, status, role);
 633         }
 634         read_unlock_bh(&hci_cb_list_lock);
 635 }
 636
 637 int hci_register_cb(struct hci_cb *hcb);
 638 int hci_unregister_cb(struct hci_cb *hcb);
 639
 640 int hci_register_notifier(struct notifier_block *nb);
 641 int hci_unregister_notifier(struct notifier_block *nb);
 642
 643 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 644 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 645 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 646
 647 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 648
 649 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 650
 651 /* ----- HCI Sockets ----- */
 652 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
 653
 654 /* HCI info for socket */
 655 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 656
 657 struct hci_pinfo {
 658         struct bt_sock    bt;
 659         struct hci_dev    *hdev;
 660         struct hci_filter filter;
 661         __u32             cmsg_mask;
 662 };
 663
 664 /* HCI security filter */
 665 #define HCI_SFLT_MAX_OGF  5
 666
 667 struct hci_sec_filter {
 668         __u32 type_mask;
 669         __u32 event_mask[2];
 670         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 671 };
 672
 673 /* ----- HCI requests ----- */
 674 #define HCI_REQ_DONE      0
 675 #define HCI_REQ_PEND      1
 676 #define HCI_REQ_CANCELED  2
 677
 678 #define hci_req_lock(d)         down(&d->req_lock)
 679 #define hci_req_unlock(d)       up(&d->req_lock)
 680
 681 void hci_req_complete(struct hci_dev *hdev, int result);
 682
 683 #endif /* __HCI_CORE_H */