include/net/bluetooth/hci_core.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
   4
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 #ifndef __HCI_CORE_H
  26 #define __HCI_CORE_H
  27
  28 #include <net/bluetooth/hci.h>
  29
  30 /* HCI 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 bdaddr_list {
  66         struct list_head list;
  67         bdaddr_t bdaddr;
  68 };
  69 #define NUM_REASSEMBLY 4
  70 struct hci_dev {
  71         struct list_head list;
  72         spinlock_t      lock;
  73         atomic_t        refcnt;
  74
  75         char            name[8];
  76         unsigned long   flags;
  77         __u16           id;
  78         __u8            bus;
  79         __u8            dev_type;
  80         bdaddr_t        bdaddr;
  81         __u8            dev_name[248];
  82         __u8            dev_class[3];
  83         __u8            features[8];
  84         __u8            commands[64];
  85         __u8            ssp_mode;
  86         __u8            hci_ver;
  87         __u16           hci_rev;
  88         __u16           manufacturer;
  89         __u16           voice_setting;
  90
  91         __u16           pkt_type;
  92         __u16           esco_type;
  93         __u16           link_policy;
  94         __u16           link_mode;
  95
  96         __u32           idle_timeout;
  97         __u16           sniff_min_interval;
  98         __u16           sniff_max_interval;
  99
 100         unsigned long   quirks;
 101
 102         atomic_t        cmd_cnt;
 103         unsigned int    acl_cnt;
 104         unsigned int    sco_cnt;
 105
 106         unsigned int    acl_mtu;
 107         unsigned int    sco_mtu;
 108         unsigned int    acl_pkts;
 109         unsigned int    sco_pkts;
 110
 111         unsigned long   cmd_last_tx;
 112         unsigned long   acl_last_tx;
 113         unsigned long   sco_last_tx;
 114
 115         struct workqueue_struct *workqueue;
 116
 117         struct tasklet_struct   cmd_task;
 118         struct tasklet_struct   rx_task;
 119         struct tasklet_struct   tx_task;
 120
 121         struct sk_buff_head     rx_q;
 122         struct sk_buff_head     raw_q;
 123         struct sk_buff_head     cmd_q;
 124
 125         struct sk_buff          *sent_cmd;
 126         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 127
 128         struct mutex            req_lock;
 129         wait_queue_head_t       req_wait_q;
 130         __u32                   req_status;
 131         __u32                   req_result;
 132
 133         struct inquiry_cache    inq_cache;
 134         struct hci_conn_hash    conn_hash;
 135         struct list_head        blacklist;
 136
 137         struct hci_dev_stats    stat;
 138
 139         struct sk_buff_head     driver_init;
 140
 141         void                    *driver_data;
 142         void                    *core_data;
 143
 144         atomic_t                promisc;
 145
 146         struct dentry           *debugfs;
 147
 148         struct device           *parent;
 149         struct device           dev;
 150
 151         struct rfkill           *rfkill;
 152
 153         struct module           *owner;
 154
 155         int (*open)(struct hci_dev *hdev);
 156         int (*close)(struct hci_dev *hdev);
 157         int (*flush)(struct hci_dev *hdev);
 158         int (*send)(struct sk_buff *skb);
 159         void (*destruct)(struct hci_dev *hdev);
 160         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 161         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 162 };
 163
 164 struct hci_conn {
 165         struct list_head list;
 166
 167         atomic_t         refcnt;
 168         spinlock_t       lock;
 169
 170         bdaddr_t         dst;
 171         __u16            handle;
 172         __u16            state;
 173         __u8             mode;
 174         __u8             type;
 175         __u8             out;
 176         __u8             attempt;
 177         __u8             dev_class[3];
 178         __u8             features[8];
 179         __u8             ssp_mode;
 180         __u16            interval;
 181         __u16            pkt_type;
 182         __u16            link_policy;
 183         __u32            link_mode;
 184         __u8             auth_type;
 185         __u8             sec_level;
 186         __u8             power_save;
 187         __u16            disc_timeout;
 188         unsigned long    pend;
 189
 190         unsigned int     sent;
 191
 192         struct sk_buff_head data_q;
 193
 194         struct timer_list disc_timer;
 195         struct timer_list idle_timer;
 196
 197         struct work_struct work_add;
 198         struct work_struct work_del;
 199
 200         struct device   dev;
 201         atomic_t        devref;
 202
 203         struct hci_dev  *hdev;
 204         void            *l2cap_data;
 205         void            *sco_data;
 206         void            *priv;
 207
 208         struct hci_conn *link;
 209 };
 210
 211 extern struct hci_proto *hci_proto[];
 212 extern struct list_head hci_dev_list;
 213 extern struct list_head hci_cb_list;
 214 extern rwlock_t hci_dev_list_lock;
 215 extern rwlock_t hci_cb_list_lock;
 216
 217 /* ----- Inquiry cache ----- */
 218 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   // 30 seconds
 219 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   // 60 seconds
 220
 221 #define inquiry_cache_lock(c)           spin_lock(&c->lock)
 222 #define inquiry_cache_unlock(c)         spin_unlock(&c->lock)
 223 #define inquiry_cache_lock_bh(c)        spin_lock_bh(&c->lock)
 224 #define inquiry_cache_unlock_bh(c)      spin_unlock_bh(&c->lock)
 225
 226 static inline void inquiry_cache_init(struct hci_dev *hdev)
 227 {
 228         struct inquiry_cache *c = &hdev->inq_cache;
 229         spin_lock_init(&c->lock);
 230         c->list = NULL;
 231 }
 232
 233 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 234 {
 235         struct inquiry_cache *c = &hdev->inq_cache;
 236         return (c->list == NULL);
 237 }
 238
 239 static inline long inquiry_cache_age(struct hci_dev *hdev)
 240 {
 241         struct inquiry_cache *c = &hdev->inq_cache;
 242         return jiffies - c->timestamp;
 243 }
 244
 245 static inline long inquiry_entry_age(struct inquiry_entry *e)
 246 {
 247         return jiffies - e->timestamp;
 248 }
 249
 250 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 251 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
 252
 253 /* ----- HCI Connections ----- */
 254 enum {
 255         HCI_CONN_AUTH_PEND,
 256         HCI_CONN_ENCRYPT_PEND,
 257         HCI_CONN_RSWITCH_PEND,
 258         HCI_CONN_MODE_CHANGE_PEND,
 259         HCI_CONN_SCO_SETUP_PEND,
 260 };
 261
 262 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 263 {
 264         struct hci_conn_hash *h = &hdev->conn_hash;
 265         INIT_LIST_HEAD(&h->list);
 266         spin_lock_init(&h->lock);
 267         h->acl_num = 0;
 268         h->sco_num = 0;
 269 }
 270
 271 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 272 {
 273         struct hci_conn_hash *h = &hdev->conn_hash;
 274         list_add(&c->list, &h->list);
 275         if (c->type == ACL_LINK)
 276                 h->acl_num++;
 277         else
 278                 h->sco_num++;
 279 }
 280
 281 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 282 {
 283         struct hci_conn_hash *h = &hdev->conn_hash;
 284         list_del(&c->list);
 285         if (c->type == ACL_LINK)
 286                 h->acl_num--;
 287         else
 288                 h->sco_num--;
 289 }
 290
 291 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 292                                         __u16 handle)
 293 {
 294         struct hci_conn_hash *h = &hdev->conn_hash;
 295         struct list_head *p;
 296         struct hci_conn  *c;
 297
 298         list_for_each(p, &h->list) {
 299                 c = list_entry(p, struct hci_conn, list);
 300                 if (c->handle == handle)
 301                         return c;
 302         }
 303         return NULL;
 304 }
 305
 306 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 307                                         __u8 type, bdaddr_t *ba)
 308 {
 309         struct hci_conn_hash *h = &hdev->conn_hash;
 310         struct list_head *p;
 311         struct hci_conn  *c;
 312
 313         list_for_each(p, &h->list) {
 314                 c = list_entry(p, struct hci_conn, list);
 315                 if (c->type == type && !bacmp(&c->dst, ba))
 316                         return c;
 317         }
 318         return NULL;
 319 }
 320
 321 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 322                                         __u8 type, __u16 state)
 323 {
 324         struct hci_conn_hash *h = &hdev->conn_hash;
 325         struct list_head *p;
 326         struct hci_conn  *c;
 327
 328         list_for_each(p, &h->list) {
 329                 c = list_entry(p, struct hci_conn, list);
 330                 if (c->type == type && c->state == state)
 331                         return c;
 332         }
 333         return NULL;
 334 }
 335
 336 void hci_acl_connect(struct hci_conn *conn);
 337 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 338 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 339 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 340 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 341
 342 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 343 int hci_conn_del(struct hci_conn *conn);
 344 void hci_conn_hash_flush(struct hci_dev *hdev);
 345 void hci_conn_check_pending(struct hci_dev *hdev);
 346
 347 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type);
 348 int hci_conn_check_link_mode(struct hci_conn *conn);
 349 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 350 int hci_conn_change_link_key(struct hci_conn *conn);
 351 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 352
 353 void hci_conn_enter_active_mode(struct hci_conn *conn);
 354 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
 355
 356 void hci_conn_hold_device(struct hci_conn *conn);
 357 void hci_conn_put_device(struct hci_conn *conn);
 358
 359 static inline void hci_conn_hold(struct hci_conn *conn)
 360 {
 361         atomic_inc(&conn->refcnt);
 362         del_timer(&conn->disc_timer);
 363 }
 364
 365 static inline void hci_conn_put(struct hci_conn *conn)
 366 {
 367         if (atomic_dec_and_test(&conn->refcnt)) {
 368                 unsigned long timeo;
 369                 if (conn->type == ACL_LINK) {
 370                         del_timer(&conn->idle_timer);
 371                         if (conn->state == BT_CONNECTED) {
 372                                 timeo = msecs_to_jiffies(conn->disc_timeout);
 373                                 if (!conn->out)
 374                                         timeo *= 2;
 375                         } else
 376                                 timeo = msecs_to_jiffies(10);
 377                 } else
 378                         timeo = msecs_to_jiffies(10);
 379                 mod_timer(&conn->disc_timer, jiffies + timeo);
 380         }
 381 }
 382
 383 /* ----- HCI Devices ----- */
 384 static inline void __hci_dev_put(struct hci_dev *d)
 385 {
 386         if (atomic_dec_and_test(&d->refcnt))
 387                 d->destruct(d);
 388 }
 389
 390 static inline void hci_dev_put(struct hci_dev *d)
 391 {
 392         __hci_dev_put(d);
 393         module_put(d->owner);
 394 }
 395
 396 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
 397 {
 398         atomic_inc(&d->refcnt);
 399         return d;
 400 }
 401
 402 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 403 {
 404         if (try_module_get(d->owner))
 405                 return __hci_dev_hold(d);
 406         return NULL;
 407 }
 408
 409 #define hci_dev_lock(d)         spin_lock(&d->lock)
 410 #define hci_dev_unlock(d)       spin_unlock(&d->lock)
 411 #define hci_dev_lock_bh(d)      spin_lock_bh(&d->lock)
 412 #define hci_dev_unlock_bh(d)    spin_unlock_bh(&d->lock)
 413
 414 struct hci_dev *hci_dev_get(int index);
 415 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 416
 417 struct hci_dev *hci_alloc_dev(void);
 418 void hci_free_dev(struct hci_dev *hdev);
 419 int hci_register_dev(struct hci_dev *hdev);
 420 int hci_unregister_dev(struct hci_dev *hdev);
 421 int hci_suspend_dev(struct hci_dev *hdev);
 422 int hci_resume_dev(struct hci_dev *hdev);
 423 int hci_dev_open(__u16 dev);
 424 int hci_dev_close(__u16 dev);
 425 int hci_dev_reset(__u16 dev);
 426 int hci_dev_reset_stat(__u16 dev);
 427 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 428 int hci_get_dev_list(void __user *arg);
 429 int hci_get_dev_info(void __user *arg);
 430 int hci_get_conn_list(void __user *arg);
 431 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 432 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 433 int hci_inquiry(void __user *arg);
 434
 435 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 436 int hci_blacklist_clear(struct hci_dev *hdev);
 437
 438 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 439
 440 int hci_recv_frame(struct sk_buff *skb);
 441 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 442 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 443
 444 int hci_register_sysfs(struct hci_dev *hdev);
 445 void hci_unregister_sysfs(struct hci_dev *hdev);
 446 void hci_conn_init_sysfs(struct hci_conn *conn);
 447 void hci_conn_add_sysfs(struct hci_conn *conn);
 448 void hci_conn_del_sysfs(struct hci_conn *conn);
 449
 450 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 451
 452 /* ----- LMP capabilities ----- */
 453 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 454 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 455 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 456 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 457 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 458 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 459
 460 /* ----- HCI protocols ----- */
 461 struct hci_proto {
 462         char            *name;
 463         unsigned int    id;
 464         unsigned long   flags;
 465
 466         void            *priv;
 467
 468         int (*connect_ind)      (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
 469         int (*connect_cfm)      (struct hci_conn *conn, __u8 status);
 470         int (*disconn_ind)      (struct hci_conn *conn);
 471         int (*disconn_cfm)      (struct hci_conn *conn, __u8 reason);
 472         int (*recv_acldata)     (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 473         int (*recv_scodata)     (struct hci_conn *conn, struct sk_buff *skb);
 474         int (*security_cfm)     (struct hci_conn *conn, __u8 status, __u8 encrypt);
 475 };
 476
 477 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
 478 {
 479         register struct hci_proto *hp;
 480         int mask = 0;
 481
 482         hp = hci_proto[HCI_PROTO_L2CAP];
 483         if (hp && hp->connect_ind)
 484                 mask |= hp->connect_ind(hdev, bdaddr, type);
 485
 486         hp = hci_proto[HCI_PROTO_SCO];
 487         if (hp && hp->connect_ind)
 488                 mask |= hp->connect_ind(hdev, bdaddr, type);
 489
 490         return mask;
 491 }
 492
 493 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 494 {
 495         register struct hci_proto *hp;
 496
 497         hp = hci_proto[HCI_PROTO_L2CAP];
 498         if (hp && hp->connect_cfm)
 499                 hp->connect_cfm(conn, status);
 500
 501         hp = hci_proto[HCI_PROTO_SCO];
 502         if (hp && hp->connect_cfm)
 503                 hp->connect_cfm(conn, status);
 504 }
 505
 506 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 507 {
 508         register struct hci_proto *hp;
 509         int reason = 0x13;
 510
 511         hp = hci_proto[HCI_PROTO_L2CAP];
 512         if (hp && hp->disconn_ind)
 513                 reason = hp->disconn_ind(conn);
 514
 515         hp = hci_proto[HCI_PROTO_SCO];
 516         if (hp && hp->disconn_ind)
 517                 reason = hp->disconn_ind(conn);
 518
 519         return reason;
 520 }
 521
 522 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 523 {
 524         register struct hci_proto *hp;
 525
 526         hp = hci_proto[HCI_PROTO_L2CAP];
 527         if (hp && hp->disconn_cfm)
 528                 hp->disconn_cfm(conn, reason);
 529
 530         hp = hci_proto[HCI_PROTO_SCO];
 531         if (hp && hp->disconn_cfm)
 532                 hp->disconn_cfm(conn, reason);
 533 }
 534
 535 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 536 {
 537         register struct hci_proto *hp;
 538         __u8 encrypt;
 539
 540         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 541                 return;
 542
 543         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 544
 545         hp = hci_proto[HCI_PROTO_L2CAP];
 546         if (hp && hp->security_cfm)
 547                 hp->security_cfm(conn, status, encrypt);
 548
 549         hp = hci_proto[HCI_PROTO_SCO];
 550         if (hp && hp->security_cfm)
 551                 hp->security_cfm(conn, status, encrypt);
 552 }
 553
 554 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
 555 {
 556         register struct hci_proto *hp;
 557
 558         hp = hci_proto[HCI_PROTO_L2CAP];
 559         if (hp && hp->security_cfm)
 560                 hp->security_cfm(conn, status, encrypt);
 561
 562         hp = hci_proto[HCI_PROTO_SCO];
 563         if (hp && hp->security_cfm)
 564                 hp->security_cfm(conn, status, encrypt);
 565 }
 566
 567 int hci_register_proto(struct hci_proto *hproto);
 568 int hci_unregister_proto(struct hci_proto *hproto);
 569
 570 /* ----- HCI callbacks ----- */
 571 struct hci_cb {
 572         struct list_head list;
 573
 574         char *name;
 575
 576         void (*security_cfm)    (struct hci_conn *conn, __u8 status, __u8 encrypt);
 577         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 578         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 579 };
 580
 581 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 582 {
 583         struct list_head *p;
 584         __u8 encrypt;
 585
 586         hci_proto_auth_cfm(conn, status);
 587
 588         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 589                 return;
 590
 591         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 592
 593         read_lock_bh(&hci_cb_list_lock);
 594         list_for_each(p, &hci_cb_list) {
 595                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 596                 if (cb->security_cfm)
 597                         cb->security_cfm(conn, status, encrypt);
 598         }
 599         read_unlock_bh(&hci_cb_list_lock);
 600 }
 601
 602 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
 603 {
 604         struct list_head *p;
 605
 606         if (conn->sec_level == BT_SECURITY_SDP)
 607                 conn->sec_level = BT_SECURITY_LOW;
 608
 609         hci_proto_encrypt_cfm(conn, status, encrypt);
 610
 611         read_lock_bh(&hci_cb_list_lock);
 612         list_for_each(p, &hci_cb_list) {
 613                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 614                 if (cb->security_cfm)
 615                         cb->security_cfm(conn, status, encrypt);
 616         }
 617         read_unlock_bh(&hci_cb_list_lock);
 618 }
 619
 620 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 621 {
 622         struct list_head *p;
 623
 624         read_lock_bh(&hci_cb_list_lock);
 625         list_for_each(p, &hci_cb_list) {
 626                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 627                 if (cb->key_change_cfm)
 628                         cb->key_change_cfm(conn, status);
 629         }
 630         read_unlock_bh(&hci_cb_list_lock);
 631 }
 632
 633 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
 634 {
 635         struct list_head *p;
 636
 637         read_lock_bh(&hci_cb_list_lock);
 638         list_for_each(p, &hci_cb_list) {
 639                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 640                 if (cb->role_switch_cfm)
 641                         cb->role_switch_cfm(conn, status, role);
 642         }
 643         read_unlock_bh(&hci_cb_list_lock);
 644 }
 645
 646 int hci_register_cb(struct hci_cb *hcb);
 647 int hci_unregister_cb(struct hci_cb *hcb);
 648
 649 int hci_register_notifier(struct notifier_block *nb);
 650 int hci_unregister_notifier(struct notifier_block *nb);
 651
 652 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 653 void hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 654 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 655
 656 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 657
 658 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 659
 660 /* ----- HCI Sockets ----- */
 661 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
 662
 663 /* HCI info for socket */
 664 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 665
 666 struct hci_pinfo {
 667         struct bt_sock    bt;
 668         struct hci_dev    *hdev;
 669         struct hci_filter filter;
 670         __u32             cmsg_mask;
 671 };
 672
 673 /* HCI security filter */
 674 #define HCI_SFLT_MAX_OGF  5
 675
 676 struct hci_sec_filter {
 677         __u32 type_mask;
 678         __u32 event_mask[2];
 679         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 680 };
 681
 682 /* ----- HCI requests ----- */
 683 #define HCI_REQ_DONE      0
 684 #define HCI_REQ_PEND      1
 685 #define HCI_REQ_CANCELED  2
 686
 687 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
 688 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
 689
 690 void hci_req_complete(struct hci_dev *hdev, int result);
 691
 692 #endif /* __HCI_CORE_H */