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 <linux/interrupt.h>
  29 #include <net/bluetooth/hci.h>
  30
  31 /* HCI upper protocols */
  32 #define HCI_PROTO_L2CAP 0
  33 #define HCI_PROTO_SCO   1
  34
  35 /* HCI priority */
  36 #define HCI_PRIO_MAX    7
  37
  38 /* HCI Core structures */
  39 struct inquiry_data {
  40         bdaddr_t        bdaddr;
  41         __u8            pscan_rep_mode;
  42         __u8            pscan_period_mode;
  43         __u8            pscan_mode;
  44         __u8            dev_class[3];
  45         __le16          clock_offset;
  46         __s8            rssi;
  47         __u8            ssp_mode;
  48 };
  49
  50 struct inquiry_entry {
  51         struct inquiry_entry    *next;
  52         __u32                   timestamp;
  53         struct inquiry_data     data;
  54 };
  55
  56 struct inquiry_cache {
  57         spinlock_t              lock;
  58         __u32                   timestamp;
  59         struct inquiry_entry    *list;
  60 };
  61
  62 struct hci_conn_hash {
  63         struct list_head list;
  64         spinlock_t       lock;
  65         unsigned int     acl_num;
  66         unsigned int     sco_num;
  67         unsigned int     le_num;
  68 };
  69
  70 struct hci_chan_hash {
  71         struct list_head list;
  72         spinlock_t       lock;
  73         unsigned int     num;
  74 };
  75
  76 struct bdaddr_list {
  77         struct list_head list;
  78         bdaddr_t bdaddr;
  79 };
  80
  81 struct bt_uuid {
  82         struct list_head list;
  83         u8 uuid[16];
  84         u8 svc_hint;
  85 };
  86
  87 struct key_master_id {
  88         __le16 ediv;
  89         u8 rand[8];
  90 } __packed;
  91
  92 struct link_key_data {
  93         bdaddr_t bdaddr;
  94         u8 type;
  95         u8 val[16];
  96         u8 pin_len;
  97         u8 dlen;
  98         u8 data[0];
  99 } __packed;
 100
 101 struct link_key {
 102         struct list_head list;
 103         bdaddr_t bdaddr;
 104         u8 type;
 105         u8 val[16];
 106         u8 pin_len;
 107         u8 dlen;
 108         u8 data[0];
 109 };
 110
 111 struct oob_data {
 112         struct list_head list;
 113         bdaddr_t bdaddr;
 114         u8 hash[16];
 115         u8 randomizer[16];
 116 };
 117
 118 struct adv_entry {
 119         struct list_head list;
 120         bdaddr_t bdaddr;
 121         u8 bdaddr_type;
 122 };
 123
 124 #define NUM_REASSEMBLY 4
 125 struct hci_dev {
 126         struct list_head list;
 127         spinlock_t      lock;
 128         atomic_t        refcnt;
 129
 130         char            name[8];
 131         unsigned long   flags;
 132         __u16           id;
 133         __u8            bus;
 134         __u8            dev_type;
 135         bdaddr_t        bdaddr;
 136         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 137         __u8            eir[HCI_MAX_EIR_LENGTH];
 138         __u8            dev_class[3];
 139         __u8            major_class;
 140         __u8            minor_class;
 141         __u8            features[8];
 142         __u8            extfeatures[8];
 143         __u8            commands[64];
 144         __u8            ssp_mode;
 145         __u8            hci_ver;
 146         __u16           hci_rev;
 147         __u8            lmp_ver;
 148         __u16           manufacturer;
 149         __le16          lmp_subver;
 150         __u16           voice_setting;
 151         __u8            io_capability;
 152
 153         __u16           pkt_type;
 154         __u16           esco_type;
 155         __u16           link_policy;
 156         __u16           link_mode;
 157
 158         __u32           idle_timeout;
 159         __u16           sniff_min_interval;
 160         __u16           sniff_max_interval;
 161
 162         __u8            amp_status;
 163         __u32           amp_total_bw;
 164         __u32           amp_max_bw;
 165         __u32           amp_min_latency;
 166         __u32           amp_max_pdu;
 167         __u8            amp_type;
 168         __u16           amp_pal_cap;
 169         __u16           amp_assoc_size;
 170         __u32           amp_max_flush_to;
 171         __u32           amp_be_flush_to;
 172
 173         unsigned int    auto_accept_delay;
 174
 175         unsigned long   quirks;
 176
 177         atomic_t        cmd_cnt;
 178         unsigned int    acl_cnt;
 179         unsigned int    sco_cnt;
 180         unsigned int    le_cnt;
 181
 182         unsigned int    acl_mtu;
 183         unsigned int    sco_mtu;
 184         unsigned int    le_mtu;
 185         unsigned int    acl_pkts;
 186         unsigned int    sco_pkts;
 187         unsigned int    le_pkts;
 188
 189         unsigned long   acl_last_tx;
 190         unsigned long   sco_last_tx;
 191         unsigned long   le_last_tx;
 192
 193         struct workqueue_struct *workqueue;
 194
 195         struct work_struct      power_on;
 196         struct delayed_work     power_off;
 197
 198         __u16                   discov_timeout;
 199         struct delayed_work     discov_off;
 200
 201         struct timer_list       cmd_timer;
 202         struct tasklet_struct   cmd_task;
 203         struct tasklet_struct   rx_task;
 204         struct tasklet_struct   tx_task;
 205
 206         struct sk_buff_head     rx_q;
 207         struct sk_buff_head     raw_q;
 208         struct sk_buff_head     cmd_q;
 209
 210         struct sk_buff          *sent_cmd;
 211         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 212
 213         struct mutex            req_lock;
 214         wait_queue_head_t       req_wait_q;
 215         __u32                   req_status;
 216         __u32                   req_result;
 217
 218         __u16                   init_last_cmd;
 219
 220         struct inquiry_cache    inq_cache;
 221         struct hci_conn_hash    conn_hash;
 222         struct list_head        blacklist;
 223
 224         struct list_head        uuids;
 225
 226         struct list_head        link_keys;
 227
 228         struct list_head        remote_oob_data;
 229
 230         struct list_head        adv_entries;
 231         struct timer_list       adv_timer;
 232
 233         struct hci_dev_stats    stat;
 234
 235         struct sk_buff_head     driver_init;
 236
 237         void                    *driver_data;
 238         void                    *core_data;
 239
 240         atomic_t                promisc;
 241
 242         struct dentry           *debugfs;
 243
 244         struct device           *parent;
 245         struct device           dev;
 246
 247         struct rfkill           *rfkill;
 248
 249         struct module           *owner;
 250
 251         int (*open)(struct hci_dev *hdev);
 252         int (*close)(struct hci_dev *hdev);
 253         int (*flush)(struct hci_dev *hdev);
 254         int (*send)(struct sk_buff *skb);
 255         void (*destruct)(struct hci_dev *hdev);
 256         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 257         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 258 };
 259
 260 struct hci_conn {
 261         struct list_head list;
 262
 263         atomic_t        refcnt;
 264
 265         bdaddr_t        dst;
 266         __u8            dst_type;
 267         __u16           handle;
 268         __u16           state;
 269         __u8            mode;
 270         __u8            type;
 271         __u8            out;
 272         __u8            attempt;
 273         __u8            dev_class[3];
 274         __u8            features[8];
 275         __u8            ssp_mode;
 276         __u16           interval;
 277         __u16           pkt_type;
 278         __u16           link_policy;
 279         __u32           link_mode;
 280         __u8            key_type;
 281         __u8            auth_type;
 282         __u8            sec_level;
 283         __u8            pending_sec_level;
 284         __u8            pin_length;
 285         __u8            enc_key_size;
 286         __u8            io_capability;
 287         __u8            power_save;
 288         __u16           disc_timeout;
 289         unsigned long   pend;
 290
 291         __u8            remote_cap;
 292         __u8            remote_oob;
 293         __u8            remote_auth;
 294
 295         unsigned int    sent;
 296
 297         struct sk_buff_head data_q;
 298         struct hci_chan_hash chan_hash;
 299
 300         struct timer_list disc_timer;
 301         struct timer_list idle_timer;
 302         struct timer_list auto_accept_timer;
 303
 304         struct work_struct work_add;
 305         struct work_struct work_del;
 306
 307         struct device   dev;
 308         atomic_t        devref;
 309
 310         struct hci_dev  *hdev;
 311         void            *l2cap_data;
 312         void            *sco_data;
 313
 314         struct hci_conn *link;
 315
 316         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 317         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 318         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 319 };
 320
 321 struct hci_chan {
 322         struct list_head list;
 323
 324         struct hci_conn *conn;
 325         struct sk_buff_head data_q;
 326         unsigned int    sent;
 327 };
 328
 329 extern struct hci_proto *hci_proto[];
 330 extern struct list_head hci_dev_list;
 331 extern struct list_head hci_cb_list;
 332 extern rwlock_t hci_dev_list_lock;
 333 extern rwlock_t hci_cb_list_lock;
 334
 335 /* ----- Inquiry cache ----- */
 336 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 337 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 338
 339 #define inquiry_cache_lock(c)           spin_lock(&c->lock)
 340 #define inquiry_cache_unlock(c)         spin_unlock(&c->lock)
 341 #define inquiry_cache_lock_bh(c)        spin_lock_bh(&c->lock)
 342 #define inquiry_cache_unlock_bh(c)      spin_unlock_bh(&c->lock)
 343
 344 static inline void inquiry_cache_init(struct hci_dev *hdev)
 345 {
 346         struct inquiry_cache *c = &hdev->inq_cache;
 347         spin_lock_init(&c->lock);
 348         c->list = NULL;
 349 }
 350
 351 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 352 {
 353         struct inquiry_cache *c = &hdev->inq_cache;
 354         return c->list == NULL;
 355 }
 356
 357 static inline long inquiry_cache_age(struct hci_dev *hdev)
 358 {
 359         struct inquiry_cache *c = &hdev->inq_cache;
 360         return jiffies - c->timestamp;
 361 }
 362
 363 static inline long inquiry_entry_age(struct inquiry_entry *e)
 364 {
 365         return jiffies - e->timestamp;
 366 }
 367
 368 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 369                                                         bdaddr_t *bdaddr);
 370 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
 371
 372 /* ----- HCI Connections ----- */
 373 enum {
 374         HCI_CONN_AUTH_PEND,
 375         HCI_CONN_REAUTH_PEND,
 376         HCI_CONN_ENCRYPT_PEND,
 377         HCI_CONN_RSWITCH_PEND,
 378         HCI_CONN_MODE_CHANGE_PEND,
 379         HCI_CONN_SCO_SETUP_PEND,
 380         HCI_CONN_LE_SMP_PEND,
 381 };
 382
 383 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 384 {
 385         struct hci_conn_hash *h = &hdev->conn_hash;
 386         INIT_LIST_HEAD(&h->list);
 387         spin_lock_init(&h->lock);
 388         h->acl_num = 0;
 389         h->sco_num = 0;
 390 }
 391
 392 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 393 {
 394         struct hci_conn_hash *h = &hdev->conn_hash;
 395         list_add(&c->list, &h->list);
 396         switch (c->type) {
 397         case ACL_LINK:
 398                 h->acl_num++;
 399                 break;
 400         case LE_LINK:
 401                 h->le_num++;
 402                 break;
 403         case SCO_LINK:
 404         case ESCO_LINK:
 405                 h->sco_num++;
 406                 break;
 407         }
 408 }
 409
 410 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 411 {
 412         struct hci_conn_hash *h = &hdev->conn_hash;
 413         list_del(&c->list);
 414         switch (c->type) {
 415         case ACL_LINK:
 416                 h->acl_num--;
 417                 break;
 418         case LE_LINK:
 419                 h->le_num--;
 420                 break;
 421         case SCO_LINK:
 422         case ESCO_LINK:
 423                 h->sco_num--;
 424                 break;
 425         }
 426 }
 427
 428 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 429 {
 430         struct hci_conn_hash *h = &hdev->conn_hash;
 431         switch (type) {
 432         case ACL_LINK:
 433                 return h->acl_num;
 434         case LE_LINK:
 435                 return h->le_num;
 436         case SCO_LINK:
 437         case ESCO_LINK:
 438                 return h->sco_num;
 439         default:
 440                 return 0;
 441         }
 442 }
 443
 444 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 445                                                                 __u16 handle)
 446 {
 447         struct hci_conn_hash *h = &hdev->conn_hash;
 448         struct list_head *p;
 449         struct hci_conn  *c;
 450
 451         list_for_each(p, &h->list) {
 452                 c = list_entry(p, struct hci_conn, list);
 453                 if (c->handle == handle)
 454                         return c;
 455         }
 456         return NULL;
 457 }
 458
 459 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 460                                                         __u8 type, bdaddr_t *ba)
 461 {
 462         struct hci_conn_hash *h = &hdev->conn_hash;
 463         struct list_head *p;
 464         struct hci_conn  *c;
 465
 466         list_for_each(p, &h->list) {
 467                 c = list_entry(p, struct hci_conn, list);
 468                 if (c->type == type && !bacmp(&c->dst, ba))
 469                         return c;
 470         }
 471         return NULL;
 472 }
 473
 474 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 475                                                         __u8 type, __u16 state)
 476 {
 477         struct hci_conn_hash *h = &hdev->conn_hash;
 478         struct list_head *p;
 479         struct hci_conn  *c;
 480
 481         list_for_each(p, &h->list) {
 482                 c = list_entry(p, struct hci_conn, list);
 483                 if (c->type == type && c->state == state)
 484                         return c;
 485         }
 486         return NULL;
 487 }
 488
 489 static inline void hci_chan_hash_init(struct hci_conn *c)
 490 {
 491         struct hci_chan_hash *h = &c->chan_hash;
 492         INIT_LIST_HEAD(&h->list);
 493         spin_lock_init(&h->lock);
 494         h->num = 0;
 495 }
 496
 497 static inline void hci_chan_hash_add(struct hci_conn *c, struct hci_chan *chan)
 498 {
 499         struct hci_chan_hash *h = &c->chan_hash;
 500         list_add(&chan->list, &h->list);
 501         h->num++;
 502 }
 503
 504 static inline void hci_chan_hash_del(struct hci_conn *c, struct hci_chan *chan)
 505 {
 506         struct hci_chan_hash *h = &c->chan_hash;
 507         list_del(&chan->list);
 508         h->num--;
 509 }
 510
 511 void hci_acl_connect(struct hci_conn *conn);
 512 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 513 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 514 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 515 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 516
 517 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 518 int hci_conn_del(struct hci_conn *conn);
 519 void hci_conn_hash_flush(struct hci_dev *hdev);
 520 void hci_conn_check_pending(struct hci_dev *hdev);
 521
 522 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 523 int hci_chan_del(struct hci_chan *chan);
 524 void hci_chan_hash_flush(struct hci_conn *conn);
 525
 526 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 527                                                 __u8 sec_level, __u8 auth_type);
 528 int hci_conn_check_link_mode(struct hci_conn *conn);
 529 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 530 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 531 int hci_conn_change_link_key(struct hci_conn *conn);
 532 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 533
 534 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 535 void hci_conn_enter_sniff_mode(struct hci_conn *conn);
 536
 537 void hci_conn_hold_device(struct hci_conn *conn);
 538 void hci_conn_put_device(struct hci_conn *conn);
 539
 540 static inline void hci_conn_hold(struct hci_conn *conn)
 541 {
 542         atomic_inc(&conn->refcnt);
 543         del_timer(&conn->disc_timer);
 544 }
 545
 546 static inline void hci_conn_put(struct hci_conn *conn)
 547 {
 548         if (atomic_dec_and_test(&conn->refcnt)) {
 549                 unsigned long timeo;
 550                 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
 551                         del_timer(&conn->idle_timer);
 552                         if (conn->state == BT_CONNECTED) {
 553                                 timeo = msecs_to_jiffies(conn->disc_timeout);
 554                                 if (!conn->out)
 555                                         timeo *= 2;
 556                         } else {
 557                                 timeo = msecs_to_jiffies(10);
 558                         }
 559                 } else {
 560                         timeo = msecs_to_jiffies(10);
 561                 }
 562                 mod_timer(&conn->disc_timer, jiffies + timeo);
 563         }
 564 }
 565
 566 /* ----- HCI Devices ----- */
 567 static inline void __hci_dev_put(struct hci_dev *d)
 568 {
 569         if (atomic_dec_and_test(&d->refcnt))
 570                 d->destruct(d);
 571 }
 572
 573 static inline void hci_dev_put(struct hci_dev *d)
 574 {
 575         __hci_dev_put(d);
 576         module_put(d->owner);
 577 }
 578
 579 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
 580 {
 581         atomic_inc(&d->refcnt);
 582         return d;
 583 }
 584
 585 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 586 {
 587         if (try_module_get(d->owner))
 588                 return __hci_dev_hold(d);
 589         return NULL;
 590 }
 591
 592 #define hci_dev_lock(d)         spin_lock(&d->lock)
 593 #define hci_dev_unlock(d)       spin_unlock(&d->lock)
 594 #define hci_dev_lock_bh(d)      spin_lock_bh(&d->lock)
 595 #define hci_dev_unlock_bh(d)    spin_unlock_bh(&d->lock)
 596
 597 struct hci_dev *hci_dev_get(int index);
 598 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 599
 600 struct hci_dev *hci_alloc_dev(void);
 601 void hci_free_dev(struct hci_dev *hdev);
 602 int hci_register_dev(struct hci_dev *hdev);
 603 void hci_unregister_dev(struct hci_dev *hdev);
 604 int hci_suspend_dev(struct hci_dev *hdev);
 605 int hci_resume_dev(struct hci_dev *hdev);
 606 int hci_dev_open(__u16 dev);
 607 int hci_dev_close(__u16 dev);
 608 int hci_dev_reset(__u16 dev);
 609 int hci_dev_reset_stat(__u16 dev);
 610 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 611 int hci_get_dev_list(void __user *arg);
 612 int hci_get_dev_info(void __user *arg);
 613 int hci_get_conn_list(void __user *arg);
 614 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 615 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 616 int hci_inquiry(void __user *arg);
 617
 618 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 619 int hci_blacklist_clear(struct hci_dev *hdev);
 620 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr);
 621 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr);
 622
 623 int hci_uuids_clear(struct hci_dev *hdev);
 624
 625 int hci_link_keys_clear(struct hci_dev *hdev);
 626 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 627 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 628                         bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 629 struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 630 struct link_key *hci_find_link_key_type(struct hci_dev *hdev,
 631                                         bdaddr_t *bdaddr, u8 type);
 632 int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
 633                         u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16]);
 634 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 635
 636 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 637 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 638                                                         bdaddr_t *bdaddr);
 639 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 640                                                                 u8 *randomizer);
 641 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 642
 643 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
 644 int hci_adv_entries_clear(struct hci_dev *hdev);
 645 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
 646 int hci_add_adv_entry(struct hci_dev *hdev,
 647                                         struct hci_ev_le_advertising_info *ev);
 648
 649 void hci_del_off_timer(struct hci_dev *hdev);
 650
 651 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 652
 653 int hci_recv_frame(struct sk_buff *skb);
 654 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 655 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 656
 657 void hci_init_sysfs(struct hci_dev *hdev);
 658 int hci_add_sysfs(struct hci_dev *hdev);
 659 void hci_del_sysfs(struct hci_dev *hdev);
 660 void hci_conn_init_sysfs(struct hci_conn *conn);
 661 void hci_conn_add_sysfs(struct hci_conn *conn);
 662 void hci_conn_del_sysfs(struct hci_conn *conn);
 663
 664 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 665
 666 /* ----- LMP capabilities ----- */
 667 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 668 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 669 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 670 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 671 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 672 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 673 #define lmp_no_flush_capable(dev)  ((dev)->features[6] & LMP_NO_FLUSH)
 674 #define lmp_le_capable(dev)        ((dev)->features[4] & LMP_LE)
 675
 676 /* ----- Extended LMP capabilities ----- */
 677 #define lmp_host_le_capable(dev)   ((dev)->extfeatures[0] & LMP_HOST_LE)
 678
 679 /* ----- HCI protocols ----- */
 680 struct hci_proto {
 681         char            *name;
 682         unsigned int    id;
 683         unsigned long   flags;
 684
 685         void            *priv;
 686
 687         int (*connect_ind)      (struct hci_dev *hdev, bdaddr_t *bdaddr,
 688                                                                 __u8 type);
 689         int (*connect_cfm)      (struct hci_conn *conn, __u8 status);
 690         int (*disconn_ind)      (struct hci_conn *conn);
 691         int (*disconn_cfm)      (struct hci_conn *conn, __u8 reason);
 692         int (*recv_acldata)     (struct hci_conn *conn, struct sk_buff *skb,
 693                                                                 __u16 flags);
 694         int (*recv_scodata)     (struct hci_conn *conn, struct sk_buff *skb);
 695         int (*security_cfm)     (struct hci_conn *conn, __u8 status,
 696                                                                 __u8 encrypt);
 697 };
 698
 699 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 700                                                                 __u8 type)
 701 {
 702         register struct hci_proto *hp;
 703         int mask = 0;
 704
 705         hp = hci_proto[HCI_PROTO_L2CAP];
 706         if (hp && hp->connect_ind)
 707                 mask |= hp->connect_ind(hdev, bdaddr, type);
 708
 709         hp = hci_proto[HCI_PROTO_SCO];
 710         if (hp && hp->connect_ind)
 711                 mask |= hp->connect_ind(hdev, bdaddr, type);
 712
 713         return mask;
 714 }
 715
 716 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 717 {
 718         register struct hci_proto *hp;
 719
 720         hp = hci_proto[HCI_PROTO_L2CAP];
 721         if (hp && hp->connect_cfm)
 722                 hp->connect_cfm(conn, status);
 723
 724         hp = hci_proto[HCI_PROTO_SCO];
 725         if (hp && hp->connect_cfm)
 726                 hp->connect_cfm(conn, status);
 727
 728         if (conn->connect_cfm_cb)
 729                 conn->connect_cfm_cb(conn, status);
 730 }
 731
 732 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 733 {
 734         register struct hci_proto *hp;
 735         int reason = HCI_ERROR_REMOTE_USER_TERM;
 736
 737         hp = hci_proto[HCI_PROTO_L2CAP];
 738         if (hp && hp->disconn_ind)
 739                 reason = hp->disconn_ind(conn);
 740
 741         hp = hci_proto[HCI_PROTO_SCO];
 742         if (hp && hp->disconn_ind)
 743                 reason = hp->disconn_ind(conn);
 744
 745         return reason;
 746 }
 747
 748 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 749 {
 750         register struct hci_proto *hp;
 751
 752         hp = hci_proto[HCI_PROTO_L2CAP];
 753         if (hp && hp->disconn_cfm)
 754                 hp->disconn_cfm(conn, reason);
 755
 756         hp = hci_proto[HCI_PROTO_SCO];
 757         if (hp && hp->disconn_cfm)
 758                 hp->disconn_cfm(conn, reason);
 759
 760         if (conn->disconn_cfm_cb)
 761                 conn->disconn_cfm_cb(conn, reason);
 762 }
 763
 764 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 765 {
 766         register struct hci_proto *hp;
 767         __u8 encrypt;
 768
 769         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 770                 return;
 771
 772         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 773
 774         hp = hci_proto[HCI_PROTO_L2CAP];
 775         if (hp && hp->security_cfm)
 776                 hp->security_cfm(conn, status, encrypt);
 777
 778         hp = hci_proto[HCI_PROTO_SCO];
 779         if (hp && hp->security_cfm)
 780                 hp->security_cfm(conn, status, encrypt);
 781
 782         if (conn->security_cfm_cb)
 783                 conn->security_cfm_cb(conn, status);
 784 }
 785
 786 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 787                                                                 __u8 encrypt)
 788 {
 789         register struct hci_proto *hp;
 790
 791         hp = hci_proto[HCI_PROTO_L2CAP];
 792         if (hp && hp->security_cfm)
 793                 hp->security_cfm(conn, status, encrypt);
 794
 795         hp = hci_proto[HCI_PROTO_SCO];
 796         if (hp && hp->security_cfm)
 797                 hp->security_cfm(conn, status, encrypt);
 798
 799         if (conn->security_cfm_cb)
 800                 conn->security_cfm_cb(conn, status);
 801 }
 802
 803 int hci_register_proto(struct hci_proto *hproto);
 804 int hci_unregister_proto(struct hci_proto *hproto);
 805
 806 /* ----- HCI callbacks ----- */
 807 struct hci_cb {
 808         struct list_head list;
 809
 810         char *name;
 811
 812         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 813                                                                 __u8 encrypt);
 814         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 815         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 816 };
 817
 818 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 819 {
 820         struct list_head *p;
 821         __u8 encrypt;
 822
 823         hci_proto_auth_cfm(conn, status);
 824
 825         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 826                 return;
 827
 828         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 829
 830         read_lock_bh(&hci_cb_list_lock);
 831         list_for_each(p, &hci_cb_list) {
 832                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 833                 if (cb->security_cfm)
 834                         cb->security_cfm(conn, status, encrypt);
 835         }
 836         read_unlock_bh(&hci_cb_list_lock);
 837 }
 838
 839 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 840                                                                 __u8 encrypt)
 841 {
 842         struct list_head *p;
 843
 844         if (conn->sec_level == BT_SECURITY_SDP)
 845                 conn->sec_level = BT_SECURITY_LOW;
 846
 847         if (conn->pending_sec_level > conn->sec_level)
 848                 conn->sec_level = conn->pending_sec_level;
 849
 850         hci_proto_encrypt_cfm(conn, status, encrypt);
 851
 852         read_lock_bh(&hci_cb_list_lock);
 853         list_for_each(p, &hci_cb_list) {
 854                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 855                 if (cb->security_cfm)
 856                         cb->security_cfm(conn, status, encrypt);
 857         }
 858         read_unlock_bh(&hci_cb_list_lock);
 859 }
 860
 861 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 862 {
 863         struct list_head *p;
 864
 865         read_lock_bh(&hci_cb_list_lock);
 866         list_for_each(p, &hci_cb_list) {
 867                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 868                 if (cb->key_change_cfm)
 869                         cb->key_change_cfm(conn, status);
 870         }
 871         read_unlock_bh(&hci_cb_list_lock);
 872 }
 873
 874 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 875                                                                 __u8 role)
 876 {
 877         struct list_head *p;
 878
 879         read_lock_bh(&hci_cb_list_lock);
 880         list_for_each(p, &hci_cb_list) {
 881                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 882                 if (cb->role_switch_cfm)
 883                         cb->role_switch_cfm(conn, status, role);
 884         }
 885         read_unlock_bh(&hci_cb_list_lock);
 886 }
 887
 888 int hci_register_cb(struct hci_cb *hcb);
 889 int hci_unregister_cb(struct hci_cb *hcb);
 890
 891 int hci_register_notifier(struct notifier_block *nb);
 892 int hci_unregister_notifier(struct notifier_block *nb);
 893
 894 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 895 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
 896 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 897
 898 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 899
 900 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 901
 902 /* ----- HCI Sockets ----- */
 903 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb,
 904                                                         struct sock *skip_sk);
 905
 906 /* Management interface */
 907 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
 908 int mgmt_index_added(struct hci_dev *hdev);
 909 int mgmt_index_removed(struct hci_dev *hdev);
 910 int mgmt_powered(struct hci_dev *hdev, u8 powered);
 911 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
 912 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
 913 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
 914 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
 915                                                                 u8 persistent);
 916 int mgmt_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 917 int mgmt_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 918 int mgmt_disconnect_failed(struct hci_dev *hdev);
 919 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type,
 920                                                                 u8 status);
 921 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
 922 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 923                                                                 u8 status);
 924 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 925                                                                 u8 status);
 926 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
 927                                                 __le32 value, u8 confirm_hint);
 928 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 929                                                                 u8 status);
 930 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev,
 931                                                 bdaddr_t *bdaddr, u8 status);
 932 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
 933 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
 934 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
 935                                                 u8 *randomizer, u8 status);
 936 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type,
 937                                         u8 *dev_class, s8 rssi, u8 *eir);
 938 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *name);
 939 int mgmt_inquiry_failed(struct hci_dev *hdev, u8 status);
 940 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
 941 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 942 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 943
 944 /* HCI info for socket */
 945 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 946
 947 struct hci_pinfo {
 948         struct bt_sock    bt;
 949         struct hci_dev    *hdev;
 950         struct hci_filter filter;
 951         __u32             cmsg_mask;
 952         unsigned short   channel;
 953 };
 954
 955 /* HCI security filter */
 956 #define HCI_SFLT_MAX_OGF  5
 957
 958 struct hci_sec_filter {
 959         __u32 type_mask;
 960         __u32 event_mask[2];
 961         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 962 };
 963
 964 /* ----- HCI requests ----- */
 965 #define HCI_REQ_DONE      0
 966 #define HCI_REQ_PEND      1
 967 #define HCI_REQ_CANCELED  2
 968
 969 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
 970 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
 971
 972 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
 973
 974 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
 975                                         u16 latency, u16 to_multiplier);
 976 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
 977                                                         __u8 ltk[16]);
 978 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]);
 979 void hci_le_ltk_neg_reply(struct hci_conn *conn);
 980
 981 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
 982 int hci_cancel_inquiry(struct hci_dev *hdev);
 983
 984 #endif /* __HCI_CORE_H */