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             power_save;
 173         unsigned long    pend;
 174
 175         unsigned int     sent;
 176
 177         struct sk_buff_head data_q;
 178
 179         struct timer_list disc_timer;
 180         struct timer_list idle_timer;
 181
 182         struct work_struct work;
 183
 184         struct device   dev;
 185
 186         struct hci_dev  *hdev;
 187         void            *l2cap_data;
 188         void            *sco_data;
 189         void            *priv;
 190
 191         struct hci_conn *link;
 192 };
 193
 194 extern struct hci_proto *hci_proto[];
 195 extern struct list_head hci_dev_list;
 196 extern struct list_head hci_cb_list;
 197 extern rwlock_t hci_dev_list_lock;
 198 extern rwlock_t hci_cb_list_lock;
 199
 200 /* ----- Inquiry cache ----- */
 201 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   // 30 seconds
 202 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   // 60 seconds
 203
 204 #define inquiry_cache_lock(c)           spin_lock(&c->lock)
 205 #define inquiry_cache_unlock(c)         spin_unlock(&c->lock)
 206 #define inquiry_cache_lock_bh(c)        spin_lock_bh(&c->lock)
 207 #define inquiry_cache_unlock_bh(c)      spin_unlock_bh(&c->lock)
 208
 209 static inline void inquiry_cache_init(struct hci_dev *hdev)
 210 {
 211         struct inquiry_cache *c = &hdev->inq_cache;
 212         spin_lock_init(&c->lock);
 213         c->list = NULL;
 214 }
 215
 216 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 217 {
 218         struct inquiry_cache *c = &hdev->inq_cache;
 219         return (c->list == NULL);
 220 }
 221
 222 static inline long inquiry_cache_age(struct hci_dev *hdev)
 223 {
 224         struct inquiry_cache *c = &hdev->inq_cache;
 225         return jiffies - c->timestamp;
 226 }
 227
 228 static inline long inquiry_entry_age(struct inquiry_entry *e)
 229 {
 230         return jiffies - e->timestamp;
 231 }
 232
 233 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 234 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
 235
 236 /* ----- HCI Connections ----- */
 237 enum {
 238         HCI_CONN_AUTH_PEND,
 239         HCI_CONN_ENCRYPT_PEND,
 240         HCI_CONN_RSWITCH_PEND,
 241         HCI_CONN_MODE_CHANGE_PEND,
 242 };
 243
 244 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 245 {
 246         struct hci_conn_hash *h = &hdev->conn_hash;
 247         INIT_LIST_HEAD(&h->list);
 248         spin_lock_init(&h->lock);
 249         h->acl_num = 0;
 250         h->sco_num = 0;
 251 }
 252
 253 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 254 {
 255         struct hci_conn_hash *h = &hdev->conn_hash;
 256         list_add(&c->list, &h->list);
 257         if (c->type == ACL_LINK)
 258                 h->acl_num++;
 259         else
 260                 h->sco_num++;
 261 }
 262
 263 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 264 {
 265         struct hci_conn_hash *h = &hdev->conn_hash;
 266         list_del(&c->list);
 267         if (c->type == ACL_LINK)
 268                 h->acl_num--;
 269         else
 270                 h->sco_num--;
 271 }
 272
 273 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 274                                         __u16 handle)
 275 {
 276         struct hci_conn_hash *h = &hdev->conn_hash;
 277         struct list_head *p;
 278         struct hci_conn  *c;
 279
 280         list_for_each(p, &h->list) {
 281                 c = list_entry(p, struct hci_conn, list);
 282                 if (c->handle == handle)
 283                         return c;
 284         }
 285         return NULL;
 286 }
 287
 288 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 289                                         __u8 type, bdaddr_t *ba)
 290 {
 291         struct hci_conn_hash *h = &hdev->conn_hash;
 292         struct list_head *p;
 293         struct hci_conn  *c;
 294
 295         list_for_each(p, &h->list) {
 296                 c = list_entry(p, struct hci_conn, list);
 297                 if (c->type == type && !bacmp(&c->dst, ba))
 298                         return c;
 299         }
 300         return NULL;
 301 }
 302
 303 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 304                                         __u8 type, __u16 state)
 305 {
 306         struct hci_conn_hash *h = &hdev->conn_hash;
 307         struct list_head *p;
 308         struct hci_conn  *c;
 309
 310         list_for_each(p, &h->list) {
 311                 c = list_entry(p, struct hci_conn, list);
 312                 if (c->type == type && c->state == state)
 313                         return c;
 314         }
 315         return NULL;
 316 }
 317
 318 void hci_acl_connect(struct hci_conn *conn);
 319 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 320 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 321 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 322
 323 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 324 int hci_conn_del(struct hci_conn *conn);
 325 void hci_conn_hash_flush(struct hci_dev *hdev);
 326 void hci_conn_check_pending(struct hci_dev *hdev);
 327
 328 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *src);
 329 int hci_conn_auth(struct hci_conn *conn);
 330 int hci_conn_encrypt(struct hci_conn *conn);
 331 int hci_conn_change_link_key(struct hci_conn *conn);
 332 int hci_conn_switch_role(struct hci_conn *conn, uint8_t role);
 333
 334 void hci_conn_enter_active_mode(struct hci_conn *conn);
 335 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
 336
 337 static inline void hci_conn_hold(struct hci_conn *conn)
 338 {
 339         atomic_inc(&conn->refcnt);
 340         del_timer(&conn->disc_timer);
 341 }
 342
 343 static inline void hci_conn_put(struct hci_conn *conn)
 344 {
 345         if (atomic_dec_and_test(&conn->refcnt)) {
 346                 unsigned long timeo;
 347                 if (conn->type == ACL_LINK) {
 348                         del_timer(&conn->idle_timer);
 349                         if (conn->state == BT_CONNECTED) {
 350                                 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT);
 351                                 if (!conn->out)
 352                                         timeo *= 5;
 353                         } else
 354                                 timeo = msecs_to_jiffies(10);
 355                 } else
 356                         timeo = msecs_to_jiffies(10);
 357                 mod_timer(&conn->disc_timer, jiffies + timeo);
 358         }
 359 }
 360
 361 /* ----- HCI tasks ----- */
 362 static inline void hci_sched_cmd(struct hci_dev *hdev)
 363 {
 364         tasklet_schedule(&hdev->cmd_task);
 365 }
 366
 367 static inline void hci_sched_rx(struct hci_dev *hdev)
 368 {
 369         tasklet_schedule(&hdev->rx_task);
 370 }
 371
 372 static inline void hci_sched_tx(struct hci_dev *hdev)
 373 {
 374         tasklet_schedule(&hdev->tx_task);
 375 }
 376
 377 /* ----- HCI Devices ----- */
 378 static inline void __hci_dev_put(struct hci_dev *d)
 379 {
 380         if (atomic_dec_and_test(&d->refcnt))
 381                 d->destruct(d);
 382 }
 383
 384 static inline void hci_dev_put(struct hci_dev *d)
 385 {
 386         __hci_dev_put(d);
 387         module_put(d->owner);
 388 }
 389
 390 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
 391 {
 392         atomic_inc(&d->refcnt);
 393         return d;
 394 }
 395
 396 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 397 {
 398         if (try_module_get(d->owner))
 399                 return __hci_dev_hold(d);
 400         return NULL;
 401 }
 402
 403 #define hci_dev_lock(d)         spin_lock(&d->lock)
 404 #define hci_dev_unlock(d)       spin_unlock(&d->lock)
 405 #define hci_dev_lock_bh(d)      spin_lock_bh(&d->lock)
 406 #define hci_dev_unlock_bh(d)    spin_unlock_bh(&d->lock)
 407
 408 struct hci_dev *hci_dev_get(int index);
 409 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 410
 411 struct hci_dev *hci_alloc_dev(void);
 412 void hci_free_dev(struct hci_dev *hdev);
 413 int hci_register_dev(struct hci_dev *hdev);
 414 int hci_unregister_dev(struct hci_dev *hdev);
 415 int hci_suspend_dev(struct hci_dev *hdev);
 416 int hci_resume_dev(struct hci_dev *hdev);
 417 int hci_dev_open(__u16 dev);
 418 int hci_dev_close(__u16 dev);
 419 int hci_dev_reset(__u16 dev);
 420 int hci_dev_reset_stat(__u16 dev);
 421 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 422 int hci_get_dev_list(void __user *arg);
 423 int hci_get_dev_info(void __user *arg);
 424 int hci_get_conn_list(void __user *arg);
 425 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 426 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 427 int hci_inquiry(void __user *arg);
 428
 429 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 430
 431 /* Receive frame from HCI drivers */
 432 static inline int hci_recv_frame(struct sk_buff *skb)
 433 {
 434         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 435         if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
 436                         && !test_bit(HCI_INIT, &hdev->flags))) {
 437                 kfree_skb(skb);
 438                 return -ENXIO;
 439         }
 440
 441         /* Incomming skb */
 442         bt_cb(skb)->incoming = 1;
 443
 444         /* Time stamp */
 445         __net_timestamp(skb);
 446
 447         /* Queue frame for rx task */
 448         skb_queue_tail(&hdev->rx_q, skb);
 449         hci_sched_rx(hdev);
 450         return 0;
 451 }
 452
 453 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 454
 455 int hci_register_sysfs(struct hci_dev *hdev);
 456 void hci_unregister_sysfs(struct hci_dev *hdev);
 457 void hci_conn_add_sysfs(struct hci_conn *conn);
 458 void hci_conn_del_sysfs(struct hci_conn *conn);
 459
 460 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 461
 462 /* ----- LMP capabilities ----- */
 463 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 464 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 465 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 466 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 467 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 468 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 469
 470 /* ----- HCI protocols ----- */
 471 struct hci_proto {
 472         char            *name;
 473         unsigned int    id;
 474         unsigned long   flags;
 475
 476         void            *priv;
 477
 478         int (*connect_ind)      (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
 479         int (*connect_cfm)      (struct hci_conn *conn, __u8 status);
 480         int (*disconn_ind)      (struct hci_conn *conn, __u8 reason);
 481         int (*recv_acldata)     (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 482         int (*recv_scodata)     (struct hci_conn *conn, struct sk_buff *skb);
 483         int (*auth_cfm)         (struct hci_conn *conn, __u8 status);
 484         int (*encrypt_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
 533         hp = hci_proto[HCI_PROTO_L2CAP];
 534         if (hp && hp->auth_cfm)
 535                 hp->auth_cfm(conn, status);
 536
 537         hp = hci_proto[HCI_PROTO_SCO];
 538         if (hp && hp->auth_cfm)
 539                 hp->auth_cfm(conn, status);
 540 }
 541
 542 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
 543 {
 544         register struct hci_proto *hp;
 545
 546         hp = hci_proto[HCI_PROTO_L2CAP];
 547         if (hp && hp->encrypt_cfm)
 548                 hp->encrypt_cfm(conn, status, encrypt);
 549
 550         hp = hci_proto[HCI_PROTO_SCO];
 551         if (hp && hp->encrypt_cfm)
 552                 hp->encrypt_cfm(conn, status, encrypt);
 553 }
 554
 555 int hci_register_proto(struct hci_proto *hproto);
 556 int hci_unregister_proto(struct hci_proto *hproto);
 557
 558 /* ----- HCI callbacks ----- */
 559 struct hci_cb {
 560         struct list_head list;
 561
 562         char *name;
 563
 564         void (*auth_cfm)        (struct hci_conn *conn, __u8 status);
 565         void (*encrypt_cfm)     (struct hci_conn *conn, __u8 status, __u8 encrypt);
 566         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 567         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 568 };
 569
 570 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 571 {
 572         struct list_head *p;
 573
 574         hci_proto_auth_cfm(conn, status);
 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->auth_cfm)
 580                         cb->auth_cfm(conn, status);
 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         hci_proto_encrypt_cfm(conn, status, encrypt);
 590
 591         read_lock_bh(&hci_cb_list_lock);
 592         list_for_each(p, &hci_cb_list) {
 593                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 594                 if (cb->encrypt_cfm)
 595                         cb->encrypt_cfm(conn, status, encrypt);
 596         }
 597         read_unlock_bh(&hci_cb_list_lock);
 598 }
 599
 600 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 601 {
 602         struct list_head *p;
 603
 604         read_lock_bh(&hci_cb_list_lock);
 605         list_for_each(p, &hci_cb_list) {
 606                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 607                 if (cb->key_change_cfm)
 608                         cb->key_change_cfm(conn, status);
 609         }
 610         read_unlock_bh(&hci_cb_list_lock);
 611 }
 612
 613 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
 614 {
 615         struct list_head *p;
 616
 617         read_lock_bh(&hci_cb_list_lock);
 618         list_for_each(p, &hci_cb_list) {
 619                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 620                 if (cb->role_switch_cfm)
 621                         cb->role_switch_cfm(conn, status, role);
 622         }
 623         read_unlock_bh(&hci_cb_list_lock);
 624 }
 625
 626 int hci_register_cb(struct hci_cb *hcb);
 627 int hci_unregister_cb(struct hci_cb *hcb);
 628
 629 int hci_register_notifier(struct notifier_block *nb);
 630 int hci_unregister_notifier(struct notifier_block *nb);
 631
 632 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 633 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 634 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 635
 636 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 637
 638 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 639
 640 /* ----- HCI Sockets ----- */
 641 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
 642
 643 /* HCI info for socket */
 644 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 645
 646 struct hci_pinfo {
 647         struct bt_sock    bt;
 648         struct hci_dev    *hdev;
 649         struct hci_filter filter;
 650         __u32             cmsg_mask;
 651 };
 652
 653 /* HCI security filter */
 654 #define HCI_SFLT_MAX_OGF  5
 655
 656 struct hci_sec_filter {
 657         __u32 type_mask;
 658         __u32 event_mask[2];
 659         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 660 };
 661
 662 /* ----- HCI requests ----- */
 663 #define HCI_REQ_DONE      0
 664 #define HCI_REQ_PEND      1
 665 #define HCI_REQ_CANCELED  2
 666
 667 #define hci_req_lock(d)         down(&d->req_lock)
 668 #define hci_req_unlock(d)       up(&d->req_lock)
 669
 670 void hci_req_complete(struct hci_dev *hdev, int result);
 671
 672 #endif /* __HCI_CORE_H */