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            bus;
  74         __u8            dev_type;
  75         bdaddr_t        bdaddr;
  76         __u8            dev_name[248];
  77         __u8            dev_class[3];
  78         __u8            features[8];
  79         __u8            commands[64];
  80         __u8            ssp_mode;
  81         __u8            hci_ver;
  82         __u16           hci_rev;
  83         __u16           manufacturer;
  84         __u16           voice_setting;
  85
  86         __u16           pkt_type;
  87         __u16           esco_type;
  88         __u16           link_policy;
  89         __u16           link_mode;
  90
  91         __u32           idle_timeout;
  92         __u16           sniff_min_interval;
  93         __u16           sniff_max_interval;
  94
  95         unsigned long   quirks;
  96
  97         atomic_t        cmd_cnt;
  98         unsigned int    acl_cnt;
  99         unsigned int    sco_cnt;
 100
 101         unsigned int    acl_mtu;
 102         unsigned int    sco_mtu;
 103         unsigned int    acl_pkts;
 104         unsigned int    sco_pkts;
 105
 106         unsigned long   cmd_last_tx;
 107         unsigned long   acl_last_tx;
 108         unsigned long   sco_last_tx;
 109
 110         struct tasklet_struct   cmd_task;
 111         struct tasklet_struct   rx_task;
 112         struct tasklet_struct   tx_task;
 113
 114         struct sk_buff_head     rx_q;
 115         struct sk_buff_head     raw_q;
 116         struct sk_buff_head     cmd_q;
 117
 118         struct sk_buff          *sent_cmd;
 119         struct sk_buff          *reassembly[3];
 120
 121         struct mutex            req_lock;
 122         wait_queue_head_t       req_wait_q;
 123         __u32                   req_status;
 124         __u32                   req_result;
 125
 126         struct inquiry_cache    inq_cache;
 127         struct hci_conn_hash    conn_hash;
 128
 129         struct hci_dev_stats    stat;
 130
 131         struct sk_buff_head     driver_init;
 132
 133         void                    *driver_data;
 134         void                    *core_data;
 135
 136         atomic_t                promisc;
 137
 138         struct dentry           *debugfs;
 139
 140         struct device           *parent;
 141         struct device           dev;
 142
 143         struct rfkill           *rfkill;
 144
 145         struct module           *owner;
 146
 147         int (*open)(struct hci_dev *hdev);
 148         int (*close)(struct hci_dev *hdev);
 149         int (*flush)(struct hci_dev *hdev);
 150         int (*send)(struct sk_buff *skb);
 151         void (*destruct)(struct hci_dev *hdev);
 152         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 153         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 154 };
 155
 156 struct hci_conn {
 157         struct list_head list;
 158
 159         atomic_t         refcnt;
 160         spinlock_t       lock;
 161
 162         bdaddr_t         dst;
 163         __u16            handle;
 164         __u16            state;
 165         __u8             mode;
 166         __u8             type;
 167         __u8             out;
 168         __u8             attempt;
 169         __u8             dev_class[3];
 170         __u8             features[8];
 171         __u8             ssp_mode;
 172         __u16            interval;
 173         __u16            pkt_type;
 174         __u16            link_policy;
 175         __u32            link_mode;
 176         __u8             auth_type;
 177         __u8             sec_level;
 178         __u8             power_save;
 179         __u16            disc_timeout;
 180         unsigned long    pend;
 181
 182         unsigned int     sent;
 183
 184         struct sk_buff_head data_q;
 185
 186         struct timer_list disc_timer;
 187         struct timer_list idle_timer;
 188
 189         struct work_struct work_add;
 190         struct work_struct work_del;
 191
 192         struct device   dev;
 193         atomic_t        devref;
 194
 195         struct hci_dev  *hdev;
 196         void            *l2cap_data;
 197         void            *sco_data;
 198         void            *priv;
 199
 200         struct hci_conn *link;
 201 };
 202
 203 extern struct hci_proto *hci_proto[];
 204 extern struct list_head hci_dev_list;
 205 extern struct list_head hci_cb_list;
 206 extern rwlock_t hci_dev_list_lock;
 207 extern rwlock_t hci_cb_list_lock;
 208
 209 /* ----- Inquiry cache ----- */
 210 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   // 30 seconds
 211 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   // 60 seconds
 212
 213 #define inquiry_cache_lock(c)           spin_lock(&c->lock)
 214 #define inquiry_cache_unlock(c)         spin_unlock(&c->lock)
 215 #define inquiry_cache_lock_bh(c)        spin_lock_bh(&c->lock)
 216 #define inquiry_cache_unlock_bh(c)      spin_unlock_bh(&c->lock)
 217
 218 static inline void inquiry_cache_init(struct hci_dev *hdev)
 219 {
 220         struct inquiry_cache *c = &hdev->inq_cache;
 221         spin_lock_init(&c->lock);
 222         c->list = NULL;
 223 }
 224
 225 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 226 {
 227         struct inquiry_cache *c = &hdev->inq_cache;
 228         return (c->list == NULL);
 229 }
 230
 231 static inline long inquiry_cache_age(struct hci_dev *hdev)
 232 {
 233         struct inquiry_cache *c = &hdev->inq_cache;
 234         return jiffies - c->timestamp;
 235 }
 236
 237 static inline long inquiry_entry_age(struct inquiry_entry *e)
 238 {
 239         return jiffies - e->timestamp;
 240 }
 241
 242 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 243 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
 244
 245 /* ----- HCI Connections ----- */
 246 enum {
 247         HCI_CONN_AUTH_PEND,
 248         HCI_CONN_ENCRYPT_PEND,
 249         HCI_CONN_RSWITCH_PEND,
 250         HCI_CONN_MODE_CHANGE_PEND,
 251 };
 252
 253 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 254 {
 255         struct hci_conn_hash *h = &hdev->conn_hash;
 256         INIT_LIST_HEAD(&h->list);
 257         spin_lock_init(&h->lock);
 258         h->acl_num = 0;
 259         h->sco_num = 0;
 260 }
 261
 262 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 263 {
 264         struct hci_conn_hash *h = &hdev->conn_hash;
 265         list_add(&c->list, &h->list);
 266         if (c->type == ACL_LINK)
 267                 h->acl_num++;
 268         else
 269                 h->sco_num++;
 270 }
 271
 272 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 273 {
 274         struct hci_conn_hash *h = &hdev->conn_hash;
 275         list_del(&c->list);
 276         if (c->type == ACL_LINK)
 277                 h->acl_num--;
 278         else
 279                 h->sco_num--;
 280 }
 281
 282 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 283                                         __u16 handle)
 284 {
 285         struct hci_conn_hash *h = &hdev->conn_hash;
 286         struct list_head *p;
 287         struct hci_conn  *c;
 288
 289         list_for_each(p, &h->list) {
 290                 c = list_entry(p, struct hci_conn, list);
 291                 if (c->handle == handle)
 292                         return c;
 293         }
 294         return NULL;
 295 }
 296
 297 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 298                                         __u8 type, bdaddr_t *ba)
 299 {
 300         struct hci_conn_hash *h = &hdev->conn_hash;
 301         struct list_head *p;
 302         struct hci_conn  *c;
 303
 304         list_for_each(p, &h->list) {
 305                 c = list_entry(p, struct hci_conn, list);
 306                 if (c->type == type && !bacmp(&c->dst, ba))
 307                         return c;
 308         }
 309         return NULL;
 310 }
 311
 312 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 313                                         __u8 type, __u16 state)
 314 {
 315         struct hci_conn_hash *h = &hdev->conn_hash;
 316         struct list_head *p;
 317         struct hci_conn  *c;
 318
 319         list_for_each(p, &h->list) {
 320                 c = list_entry(p, struct hci_conn, list);
 321                 if (c->type == type && c->state == state)
 322                         return c;
 323         }
 324         return NULL;
 325 }
 326
 327 void hci_acl_connect(struct hci_conn *conn);
 328 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 329 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 330 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 331
 332 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 333 int hci_conn_del(struct hci_conn *conn);
 334 void hci_conn_hash_flush(struct hci_dev *hdev);
 335 void hci_conn_check_pending(struct hci_dev *hdev);
 336
 337 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type);
 338 int hci_conn_check_link_mode(struct hci_conn *conn);
 339 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 340 int hci_conn_change_link_key(struct hci_conn *conn);
 341 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 342
 343 void hci_conn_enter_active_mode(struct hci_conn *conn);
 344 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
 345
 346 void hci_conn_hold_device(struct hci_conn *conn);
 347 void hci_conn_put_device(struct hci_conn *conn);
 348
 349 static inline void hci_conn_hold(struct hci_conn *conn)
 350 {
 351         atomic_inc(&conn->refcnt);
 352         del_timer(&conn->disc_timer);
 353 }
 354
 355 static inline void hci_conn_put(struct hci_conn *conn)
 356 {
 357         if (atomic_dec_and_test(&conn->refcnt)) {
 358                 unsigned long timeo;
 359                 if (conn->type == ACL_LINK) {
 360                         del_timer(&conn->idle_timer);
 361                         if (conn->state == BT_CONNECTED) {
 362                                 timeo = msecs_to_jiffies(conn->disc_timeout);
 363                                 if (!conn->out)
 364                                         timeo *= 2;
 365                         } else
 366                                 timeo = msecs_to_jiffies(10);
 367                 } else
 368                         timeo = msecs_to_jiffies(10);
 369                 mod_timer(&conn->disc_timer, jiffies + timeo);
 370         }
 371 }
 372
 373 /* ----- HCI Devices ----- */
 374 static inline void __hci_dev_put(struct hci_dev *d)
 375 {
 376         if (atomic_dec_and_test(&d->refcnt))
 377                 d->destruct(d);
 378 }
 379
 380 static inline void hci_dev_put(struct hci_dev *d)
 381 {
 382         __hci_dev_put(d);
 383         module_put(d->owner);
 384 }
 385
 386 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
 387 {
 388         atomic_inc(&d->refcnt);
 389         return d;
 390 }
 391
 392 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 393 {
 394         if (try_module_get(d->owner))
 395                 return __hci_dev_hold(d);
 396         return NULL;
 397 }
 398
 399 #define hci_dev_lock(d)         spin_lock(&d->lock)
 400 #define hci_dev_unlock(d)       spin_unlock(&d->lock)
 401 #define hci_dev_lock_bh(d)      spin_lock_bh(&d->lock)
 402 #define hci_dev_unlock_bh(d)    spin_unlock_bh(&d->lock)
 403
 404 struct hci_dev *hci_dev_get(int index);
 405 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 406
 407 struct hci_dev *hci_alloc_dev(void);
 408 void hci_free_dev(struct hci_dev *hdev);
 409 int hci_register_dev(struct hci_dev *hdev);
 410 int hci_unregister_dev(struct hci_dev *hdev);
 411 int hci_suspend_dev(struct hci_dev *hdev);
 412 int hci_resume_dev(struct hci_dev *hdev);
 413 int hci_dev_open(__u16 dev);
 414 int hci_dev_close(__u16 dev);
 415 int hci_dev_reset(__u16 dev);
 416 int hci_dev_reset_stat(__u16 dev);
 417 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 418 int hci_get_dev_list(void __user *arg);
 419 int hci_get_dev_info(void __user *arg);
 420 int hci_get_conn_list(void __user *arg);
 421 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 422 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 423 int hci_inquiry(void __user *arg);
 424
 425 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 426
 427 int hci_recv_frame(struct sk_buff *skb);
 428 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 429
 430 int hci_register_sysfs(struct hci_dev *hdev);
 431 void hci_unregister_sysfs(struct hci_dev *hdev);
 432 void hci_conn_init_sysfs(struct hci_conn *conn);
 433 void hci_conn_add_sysfs(struct hci_conn *conn);
 434 void hci_conn_del_sysfs(struct hci_conn *conn);
 435
 436 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 437
 438 /* ----- LMP capabilities ----- */
 439 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 440 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 441 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 442 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 443 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 444 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 445
 446 /* ----- HCI protocols ----- */
 447 struct hci_proto {
 448         char            *name;
 449         unsigned int    id;
 450         unsigned long   flags;
 451
 452         void            *priv;
 453
 454         int (*connect_ind)      (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
 455         int (*connect_cfm)      (struct hci_conn *conn, __u8 status);
 456         int (*disconn_ind)      (struct hci_conn *conn);
 457         int (*disconn_cfm)      (struct hci_conn *conn, __u8 reason);
 458         int (*recv_acldata)     (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 459         int (*recv_scodata)     (struct hci_conn *conn, struct sk_buff *skb);
 460         int (*security_cfm)     (struct hci_conn *conn, __u8 status, __u8 encrypt);
 461 };
 462
 463 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
 464 {
 465         register struct hci_proto *hp;
 466         int mask = 0;
 467
 468         hp = hci_proto[HCI_PROTO_L2CAP];
 469         if (hp && hp->connect_ind)
 470                 mask |= hp->connect_ind(hdev, bdaddr, type);
 471
 472         hp = hci_proto[HCI_PROTO_SCO];
 473         if (hp && hp->connect_ind)
 474                 mask |= hp->connect_ind(hdev, bdaddr, type);
 475
 476         return mask;
 477 }
 478
 479 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 480 {
 481         register struct hci_proto *hp;
 482
 483         hp = hci_proto[HCI_PROTO_L2CAP];
 484         if (hp && hp->connect_cfm)
 485                 hp->connect_cfm(conn, status);
 486
 487         hp = hci_proto[HCI_PROTO_SCO];
 488         if (hp && hp->connect_cfm)
 489                 hp->connect_cfm(conn, status);
 490 }
 491
 492 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 493 {
 494         register struct hci_proto *hp;
 495         int reason = 0x13;
 496
 497         hp = hci_proto[HCI_PROTO_L2CAP];
 498         if (hp && hp->disconn_ind)
 499                 reason = hp->disconn_ind(conn);
 500
 501         hp = hci_proto[HCI_PROTO_SCO];
 502         if (hp && hp->disconn_ind)
 503                 reason = hp->disconn_ind(conn);
 504
 505         return reason;
 506 }
 507
 508 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 509 {
 510         register struct hci_proto *hp;
 511
 512         hp = hci_proto[HCI_PROTO_L2CAP];
 513         if (hp && hp->disconn_cfm)
 514                 hp->disconn_cfm(conn, reason);
 515
 516         hp = hci_proto[HCI_PROTO_SCO];
 517         if (hp && hp->disconn_cfm)
 518                 hp->disconn_cfm(conn, reason);
 519 }
 520
 521 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 522 {
 523         register struct hci_proto *hp;
 524         __u8 encrypt;
 525
 526         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 527                 return;
 528
 529         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 530
 531         hp = hci_proto[HCI_PROTO_L2CAP];
 532         if (hp && hp->security_cfm)
 533                 hp->security_cfm(conn, status, encrypt);
 534
 535         hp = hci_proto[HCI_PROTO_SCO];
 536         if (hp && hp->security_cfm)
 537                 hp->security_cfm(conn, status, encrypt);
 538 }
 539
 540 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
 541 {
 542         register struct hci_proto *hp;
 543
 544         hp = hci_proto[HCI_PROTO_L2CAP];
 545         if (hp && hp->security_cfm)
 546                 hp->security_cfm(conn, status, encrypt);
 547
 548         hp = hci_proto[HCI_PROTO_SCO];
 549         if (hp && hp->security_cfm)
 550                 hp->security_cfm(conn, status, encrypt);
 551 }
 552
 553 int hci_register_proto(struct hci_proto *hproto);
 554 int hci_unregister_proto(struct hci_proto *hproto);
 555
 556 /* ----- HCI callbacks ----- */
 557 struct hci_cb {
 558         struct list_head list;
 559
 560         char *name;
 561
 562         void (*security_cfm)    (struct hci_conn *conn, __u8 status, __u8 encrypt);
 563         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 564         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 565 };
 566
 567 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 568 {
 569         struct list_head *p;
 570         __u8 encrypt;
 571
 572         hci_proto_auth_cfm(conn, status);
 573
 574         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 575                 return;
 576
 577         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 578
 579         read_lock_bh(&hci_cb_list_lock);
 580         list_for_each(p, &hci_cb_list) {
 581                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 582                 if (cb->security_cfm)
 583                         cb->security_cfm(conn, status, encrypt);
 584         }
 585         read_unlock_bh(&hci_cb_list_lock);
 586 }
 587
 588 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
 589 {
 590         struct list_head *p;
 591
 592         if (conn->sec_level == BT_SECURITY_SDP)
 593                 conn->sec_level = BT_SECURITY_LOW;
 594
 595         hci_proto_encrypt_cfm(conn, status, encrypt);
 596
 597         read_lock_bh(&hci_cb_list_lock);
 598         list_for_each(p, &hci_cb_list) {
 599                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 600                 if (cb->security_cfm)
 601                         cb->security_cfm(conn, status, encrypt);
 602         }
 603         read_unlock_bh(&hci_cb_list_lock);
 604 }
 605
 606 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 607 {
 608         struct list_head *p;
 609
 610         read_lock_bh(&hci_cb_list_lock);
 611         list_for_each(p, &hci_cb_list) {
 612                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 613                 if (cb->key_change_cfm)
 614                         cb->key_change_cfm(conn, status);
 615         }
 616         read_unlock_bh(&hci_cb_list_lock);
 617 }
 618
 619 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
 620 {
 621         struct list_head *p;
 622
 623         read_lock_bh(&hci_cb_list_lock);
 624         list_for_each(p, &hci_cb_list) {
 625                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 626                 if (cb->role_switch_cfm)
 627                         cb->role_switch_cfm(conn, status, role);
 628         }
 629         read_unlock_bh(&hci_cb_list_lock);
 630 }
 631
 632 int hci_register_cb(struct hci_cb *hcb);
 633 int hci_unregister_cb(struct hci_cb *hcb);
 634
 635 int hci_register_notifier(struct notifier_block *nb);
 636 int hci_unregister_notifier(struct notifier_block *nb);
 637
 638 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 639 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 640 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 641
 642 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 643
 644 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 645
 646 /* ----- HCI Sockets ----- */
 647 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
 648
 649 /* HCI info for socket */
 650 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 651
 652 struct hci_pinfo {
 653         struct bt_sock    bt;
 654         struct hci_dev    *hdev;
 655         struct hci_filter filter;
 656         __u32             cmsg_mask;
 657 };
 658
 659 /* HCI security filter */
 660 #define HCI_SFLT_MAX_OGF  5
 661
 662 struct hci_sec_filter {
 663         __u32 type_mask;
 664         __u32 event_mask[2];
 665         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 666 };
 667
 668 /* ----- HCI requests ----- */
 669 #define HCI_REQ_DONE      0
 670 #define HCI_REQ_PEND      1
 671 #define HCI_REQ_CANCELED  2
 672
 673 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
 674 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
 675
 676 void hci_req_complete(struct hci_dev *hdev, int result);
 677
 678 #endif /* __HCI_CORE_H */