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_add;
 184         struct work_struct work_del;
 185
 186         struct device   dev;
 187
 188         struct hci_dev  *hdev;
 189         void            *l2cap_data;
 190         void            *sco_data;
 191         void            *priv;
 192
 193         struct hci_conn *link;
 194 };
 195
 196 extern struct hci_proto *hci_proto[];
 197 extern struct list_head hci_dev_list;
 198 extern struct list_head hci_cb_list;
 199 extern rwlock_t hci_dev_list_lock;
 200 extern rwlock_t hci_cb_list_lock;
 201
 202 /* ----- Inquiry cache ----- */
 203 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   // 30 seconds
 204 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   // 60 seconds
 205
 206 #define inquiry_cache_lock(c)           spin_lock(&c->lock)
 207 #define inquiry_cache_unlock(c)         spin_unlock(&c->lock)
 208 #define inquiry_cache_lock_bh(c)        spin_lock_bh(&c->lock)
 209 #define inquiry_cache_unlock_bh(c)      spin_unlock_bh(&c->lock)
 210
 211 static inline void inquiry_cache_init(struct hci_dev *hdev)
 212 {
 213         struct inquiry_cache *c = &hdev->inq_cache;
 214         spin_lock_init(&c->lock);
 215         c->list = NULL;
 216 }
 217
 218 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 219 {
 220         struct inquiry_cache *c = &hdev->inq_cache;
 221         return (c->list == NULL);
 222 }
 223
 224 static inline long inquiry_cache_age(struct hci_dev *hdev)
 225 {
 226         struct inquiry_cache *c = &hdev->inq_cache;
 227         return jiffies - c->timestamp;
 228 }
 229
 230 static inline long inquiry_entry_age(struct inquiry_entry *e)
 231 {
 232         return jiffies - e->timestamp;
 233 }
 234
 235 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 236 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
 237
 238 /* ----- HCI Connections ----- */
 239 enum {
 240         HCI_CONN_AUTH_PEND,
 241         HCI_CONN_ENCRYPT_PEND,
 242         HCI_CONN_RSWITCH_PEND,
 243         HCI_CONN_MODE_CHANGE_PEND,
 244 };
 245
 246 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 247 {
 248         struct hci_conn_hash *h = &hdev->conn_hash;
 249         INIT_LIST_HEAD(&h->list);
 250         spin_lock_init(&h->lock);
 251         h->acl_num = 0;
 252         h->sco_num = 0;
 253 }
 254
 255 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 256 {
 257         struct hci_conn_hash *h = &hdev->conn_hash;
 258         list_add(&c->list, &h->list);
 259         if (c->type == ACL_LINK)
 260                 h->acl_num++;
 261         else
 262                 h->sco_num++;
 263 }
 264
 265 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 266 {
 267         struct hci_conn_hash *h = &hdev->conn_hash;
 268         list_del(&c->list);
 269         if (c->type == ACL_LINK)
 270                 h->acl_num--;
 271         else
 272                 h->sco_num--;
 273 }
 274
 275 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 276                                         __u16 handle)
 277 {
 278         struct hci_conn_hash *h = &hdev->conn_hash;
 279         struct list_head *p;
 280         struct hci_conn  *c;
 281
 282         list_for_each(p, &h->list) {
 283                 c = list_entry(p, struct hci_conn, list);
 284                 if (c->handle == handle)
 285                         return c;
 286         }
 287         return NULL;
 288 }
 289
 290 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 291                                         __u8 type, bdaddr_t *ba)
 292 {
 293         struct hci_conn_hash *h = &hdev->conn_hash;
 294         struct list_head *p;
 295         struct hci_conn  *c;
 296
 297         list_for_each(p, &h->list) {
 298                 c = list_entry(p, struct hci_conn, list);
 299                 if (c->type == type && !bacmp(&c->dst, ba))
 300                         return c;
 301         }
 302         return NULL;
 303 }
 304
 305 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 306                                         __u8 type, __u16 state)
 307 {
 308         struct hci_conn_hash *h = &hdev->conn_hash;
 309         struct list_head *p;
 310         struct hci_conn  *c;
 311
 312         list_for_each(p, &h->list) {
 313                 c = list_entry(p, struct hci_conn, list);
 314                 if (c->type == type && c->state == state)
 315                         return c;
 316         }
 317         return NULL;
 318 }
 319
 320 void hci_acl_connect(struct hci_conn *conn);
 321 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 322 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 323 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 324
 325 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 326 int hci_conn_del(struct hci_conn *conn);
 327 void hci_conn_hash_flush(struct hci_dev *hdev);
 328 void hci_conn_check_pending(struct hci_dev *hdev);
 329
 330 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type);
 331 int hci_conn_check_link_mode(struct hci_conn *conn);
 332 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 333 int hci_conn_change_link_key(struct hci_conn *conn);
 334 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 335
 336 void hci_conn_enter_active_mode(struct hci_conn *conn);
 337 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
 338
 339 static inline void hci_conn_hold(struct hci_conn *conn)
 340 {
 341         atomic_inc(&conn->refcnt);
 342         del_timer(&conn->disc_timer);
 343 }
 344
 345 static inline void hci_conn_put(struct hci_conn *conn)
 346 {
 347         if (atomic_dec_and_test(&conn->refcnt)) {
 348                 unsigned long timeo;
 349                 if (conn->type == ACL_LINK) {
 350                         del_timer(&conn->idle_timer);
 351                         if (conn->state == BT_CONNECTED) {
 352                                 timeo = msecs_to_jiffies(HCI_DISCONN_TIMEOUT);
 353                                 if (!conn->out)
 354                                         timeo *= 5;
 355                         } else
 356                                 timeo = msecs_to_jiffies(10);
 357                 } else
 358                         timeo = msecs_to_jiffies(10);
 359                 mod_timer(&conn->disc_timer, jiffies + timeo);
 360         }
 361 }
 362
 363 /* ----- HCI tasks ----- */
 364 static inline void hci_sched_cmd(struct hci_dev *hdev)
 365 {
 366         tasklet_schedule(&hdev->cmd_task);
 367 }
 368
 369 static inline void hci_sched_rx(struct hci_dev *hdev)
 370 {
 371         tasklet_schedule(&hdev->rx_task);
 372 }
 373
 374 static inline void hci_sched_tx(struct hci_dev *hdev)
 375 {
 376         tasklet_schedule(&hdev->tx_task);
 377 }
 378
 379 /* ----- HCI Devices ----- */
 380 static inline void __hci_dev_put(struct hci_dev *d)
 381 {
 382         if (atomic_dec_and_test(&d->refcnt))
 383                 d->destruct(d);
 384 }
 385
 386 static inline void hci_dev_put(struct hci_dev *d)
 387 {
 388         __hci_dev_put(d);
 389         module_put(d->owner);
 390 }
 391
 392 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
 393 {
 394         atomic_inc(&d->refcnt);
 395         return d;
 396 }
 397
 398 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 399 {
 400         if (try_module_get(d->owner))
 401                 return __hci_dev_hold(d);
 402         return NULL;
 403 }
 404
 405 #define hci_dev_lock(d)         spin_lock(&d->lock)
 406 #define hci_dev_unlock(d)       spin_unlock(&d->lock)
 407 #define hci_dev_lock_bh(d)      spin_lock_bh(&d->lock)
 408 #define hci_dev_unlock_bh(d)    spin_unlock_bh(&d->lock)
 409
 410 struct hci_dev *hci_dev_get(int index);
 411 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 412
 413 struct hci_dev *hci_alloc_dev(void);
 414 void hci_free_dev(struct hci_dev *hdev);
 415 int hci_register_dev(struct hci_dev *hdev);
 416 int hci_unregister_dev(struct hci_dev *hdev);
 417 int hci_suspend_dev(struct hci_dev *hdev);
 418 int hci_resume_dev(struct hci_dev *hdev);
 419 int hci_dev_open(__u16 dev);
 420 int hci_dev_close(__u16 dev);
 421 int hci_dev_reset(__u16 dev);
 422 int hci_dev_reset_stat(__u16 dev);
 423 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 424 int hci_get_dev_list(void __user *arg);
 425 int hci_get_dev_info(void __user *arg);
 426 int hci_get_conn_list(void __user *arg);
 427 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 428 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 429 int hci_inquiry(void __user *arg);
 430
 431 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 432
 433 /* Receive frame from HCI drivers */
 434 static inline int hci_recv_frame(struct sk_buff *skb)
 435 {
 436         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 437         if (!hdev || (!test_bit(HCI_UP, &hdev->flags)
 438                         && !test_bit(HCI_INIT, &hdev->flags))) {
 439                 kfree_skb(skb);
 440                 return -ENXIO;
 441         }
 442
 443         /* Incomming skb */
 444         bt_cb(skb)->incoming = 1;
 445
 446         /* Time stamp */
 447         __net_timestamp(skb);
 448
 449         /* Queue frame for rx task */
 450         skb_queue_tail(&hdev->rx_q, skb);
 451         hci_sched_rx(hdev);
 452         return 0;
 453 }
 454
 455 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 456
 457 int hci_register_sysfs(struct hci_dev *hdev);
 458 void hci_unregister_sysfs(struct hci_dev *hdev);
 459 void hci_conn_add_sysfs(struct hci_conn *conn);
 460 void hci_conn_del_sysfs(struct hci_conn *conn);
 461
 462 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 463
 464 /* ----- LMP capabilities ----- */
 465 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 466 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 467 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 468 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 469 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 470 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 471
 472 /* ----- HCI protocols ----- */
 473 struct hci_proto {
 474         char            *name;
 475         unsigned int    id;
 476         unsigned long   flags;
 477
 478         void            *priv;
 479
 480         int (*connect_ind)      (struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type);
 481         int (*connect_cfm)      (struct hci_conn *conn, __u8 status);
 482         int (*disconn_ind)      (struct hci_conn *conn);
 483         int (*disconn_cfm)      (struct hci_conn *conn, __u8 reason);
 484         int (*recv_acldata)     (struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 485         int (*recv_scodata)     (struct hci_conn *conn, struct sk_buff *skb);
 486         int (*security_cfm)     (struct hci_conn *conn, __u8 status, __u8 encrypt);
 487 };
 488
 489 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 type)
 490 {
 491         register struct hci_proto *hp;
 492         int mask = 0;
 493
 494         hp = hci_proto[HCI_PROTO_L2CAP];
 495         if (hp && hp->connect_ind)
 496                 mask |= hp->connect_ind(hdev, bdaddr, type);
 497
 498         hp = hci_proto[HCI_PROTO_SCO];
 499         if (hp && hp->connect_ind)
 500                 mask |= hp->connect_ind(hdev, bdaddr, type);
 501
 502         return mask;
 503 }
 504
 505 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 506 {
 507         register struct hci_proto *hp;
 508
 509         hp = hci_proto[HCI_PROTO_L2CAP];
 510         if (hp && hp->connect_cfm)
 511                 hp->connect_cfm(conn, status);
 512
 513         hp = hci_proto[HCI_PROTO_SCO];
 514         if (hp && hp->connect_cfm)
 515                 hp->connect_cfm(conn, status);
 516 }
 517
 518 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 519 {
 520         register struct hci_proto *hp;
 521         int reason = 0x13;
 522
 523         hp = hci_proto[HCI_PROTO_L2CAP];
 524         if (hp && hp->disconn_ind)
 525                 reason = hp->disconn_ind(conn);
 526
 527         hp = hci_proto[HCI_PROTO_SCO];
 528         if (hp && hp->disconn_ind)
 529                 reason = hp->disconn_ind(conn);
 530
 531         return reason;
 532 }
 533
 534 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 535 {
 536         register struct hci_proto *hp;
 537
 538         hp = hci_proto[HCI_PROTO_L2CAP];
 539         if (hp && hp->disconn_cfm)
 540                 hp->disconn_cfm(conn, reason);
 541
 542         hp = hci_proto[HCI_PROTO_SCO];
 543         if (hp && hp->disconn_cfm)
 544                 hp->disconn_cfm(conn, reason);
 545 }
 546
 547 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 548 {
 549         register struct hci_proto *hp;
 550         __u8 encrypt;
 551
 552         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 553                 return;
 554
 555         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 556
 557         hp = hci_proto[HCI_PROTO_L2CAP];
 558         if (hp && hp->security_cfm)
 559                 hp->security_cfm(conn, status, encrypt);
 560
 561         hp = hci_proto[HCI_PROTO_SCO];
 562         if (hp && hp->security_cfm)
 563                 hp->security_cfm(conn, status, encrypt);
 564 }
 565
 566 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
 567 {
 568         register struct hci_proto *hp;
 569
 570         hp = hci_proto[HCI_PROTO_L2CAP];
 571         if (hp && hp->security_cfm)
 572                 hp->security_cfm(conn, status, encrypt);
 573
 574         hp = hci_proto[HCI_PROTO_SCO];
 575         if (hp && hp->security_cfm)
 576                 hp->security_cfm(conn, status, encrypt);
 577 }
 578
 579 int hci_register_proto(struct hci_proto *hproto);
 580 int hci_unregister_proto(struct hci_proto *hproto);
 581
 582 /* ----- HCI callbacks ----- */
 583 struct hci_cb {
 584         struct list_head list;
 585
 586         char *name;
 587
 588         void (*security_cfm)    (struct hci_conn *conn, __u8 status, __u8 encrypt);
 589         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 590         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 591 };
 592
 593 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 594 {
 595         struct list_head *p;
 596         __u8 encrypt;
 597
 598         hci_proto_auth_cfm(conn, status);
 599
 600         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 601                 return;
 602
 603         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 604
 605         read_lock_bh(&hci_cb_list_lock);
 606         list_for_each(p, &hci_cb_list) {
 607                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 608                 if (cb->security_cfm)
 609                         cb->security_cfm(conn, status, encrypt);
 610         }
 611         read_unlock_bh(&hci_cb_list_lock);
 612 }
 613
 614 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status, __u8 encrypt)
 615 {
 616         struct list_head *p;
 617
 618         if (conn->sec_level == BT_SECURITY_SDP)
 619                 conn->sec_level = BT_SECURITY_LOW;
 620
 621         hci_proto_encrypt_cfm(conn, status, encrypt);
 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->security_cfm)
 627                         cb->security_cfm(conn, status, encrypt);
 628         }
 629         read_unlock_bh(&hci_cb_list_lock);
 630 }
 631
 632 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 633 {
 634         struct list_head *p;
 635
 636         read_lock_bh(&hci_cb_list_lock);
 637         list_for_each(p, &hci_cb_list) {
 638                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 639                 if (cb->key_change_cfm)
 640                         cb->key_change_cfm(conn, status);
 641         }
 642         read_unlock_bh(&hci_cb_list_lock);
 643 }
 644
 645 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status, __u8 role)
 646 {
 647         struct list_head *p;
 648
 649         read_lock_bh(&hci_cb_list_lock);
 650         list_for_each(p, &hci_cb_list) {
 651                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 652                 if (cb->role_switch_cfm)
 653                         cb->role_switch_cfm(conn, status, role);
 654         }
 655         read_unlock_bh(&hci_cb_list_lock);
 656 }
 657
 658 int hci_register_cb(struct hci_cb *hcb);
 659 int hci_unregister_cb(struct hci_cb *hcb);
 660
 661 int hci_register_notifier(struct notifier_block *nb);
 662 int hci_unregister_notifier(struct notifier_block *nb);
 663
 664 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 665 int hci_send_acl(struct hci_conn *conn, struct sk_buff *skb, __u16 flags);
 666 int hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 667
 668 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 669
 670 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 671
 672 /* ----- HCI Sockets ----- */
 673 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
 674
 675 /* HCI info for socket */
 676 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 677
 678 struct hci_pinfo {
 679         struct bt_sock    bt;
 680         struct hci_dev    *hdev;
 681         struct hci_filter filter;
 682         __u32             cmsg_mask;
 683 };
 684
 685 /* HCI security filter */
 686 #define HCI_SFLT_MAX_OGF  5
 687
 688 struct hci_sec_filter {
 689         __u32 type_mask;
 690         __u32 event_mask[2];
 691         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 692 };
 693
 694 /* ----- HCI requests ----- */
 695 #define HCI_REQ_DONE      0
 696 #define HCI_REQ_PEND      1
 697 #define HCI_REQ_CANCELED  2
 698
 699 #define hci_req_lock(d)         down(&d->req_lock)
 700 #define hci_req_unlock(d)       up(&d->req_lock)
 701
 702 void hci_req_complete(struct hci_dev *hdev, int result);
 703
 704 #endif /* __HCI_CORE_H */