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 priority */
  32 #define HCI_PRIO_MAX    7
  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         __u32                   timestamp;
  54         struct inquiry_entry    *list;
  55 };
  56
  57 struct hci_conn_hash {
  58         struct list_head list;
  59         unsigned int     acl_num;
  60         unsigned int     sco_num;
  61         unsigned int     le_num;
  62 };
  63
  64 struct bdaddr_list {
  65         struct list_head list;
  66         bdaddr_t bdaddr;
  67 };
  68
  69 struct bt_uuid {
  70         struct list_head list;
  71         u8 uuid[16];
  72         u8 svc_hint;
  73 };
  74
  75 struct key_master_id {
  76         __le16 ediv;
  77         u8 rand[8];
  78 } __packed;
  79
  80 struct link_key_data {
  81         bdaddr_t bdaddr;
  82         u8 type;
  83         u8 val[16];
  84         u8 pin_len;
  85         u8 dlen;
  86         u8 data[0];
  87 } __packed;
  88
  89 struct link_key {
  90         struct list_head list;
  91         bdaddr_t bdaddr;
  92         u8 type;
  93         u8 val[16];
  94         u8 pin_len;
  95         u8 dlen;
  96         u8 data[0];
  97 };
  98
  99 struct oob_data {
 100         struct list_head list;
 101         bdaddr_t bdaddr;
 102         u8 hash[16];
 103         u8 randomizer[16];
 104 };
 105
 106 struct adv_entry {
 107         struct list_head list;
 108         bdaddr_t bdaddr;
 109         u8 bdaddr_type;
 110 };
 111
 112 #define NUM_REASSEMBLY 4
 113 struct hci_dev {
 114         struct list_head list;
 115         struct mutex    lock;
 116         atomic_t        refcnt;
 117
 118         char            name[8];
 119         unsigned long   flags;
 120         __u16           id;
 121         __u8            bus;
 122         __u8            dev_type;
 123         bdaddr_t        bdaddr;
 124         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 125         __u8            eir[HCI_MAX_EIR_LENGTH];
 126         __u8            dev_class[3];
 127         __u8            major_class;
 128         __u8            minor_class;
 129         __u8            features[8];
 130         __u8            host_features[8];
 131         __u8            commands[64];
 132         __u8            ssp_mode;
 133         __u8            hci_ver;
 134         __u16           hci_rev;
 135         __u8            lmp_ver;
 136         __u16           manufacturer;
 137         __le16          lmp_subver;
 138         __u16           voice_setting;
 139         __u8            io_capability;
 140
 141         __u16           pkt_type;
 142         __u16           esco_type;
 143         __u16           link_policy;
 144         __u16           link_mode;
 145
 146         __u32           idle_timeout;
 147         __u16           sniff_min_interval;
 148         __u16           sniff_max_interval;
 149
 150         __u8            amp_status;
 151         __u32           amp_total_bw;
 152         __u32           amp_max_bw;
 153         __u32           amp_min_latency;
 154         __u32           amp_max_pdu;
 155         __u8            amp_type;
 156         __u16           amp_pal_cap;
 157         __u16           amp_assoc_size;
 158         __u32           amp_max_flush_to;
 159         __u32           amp_be_flush_to;
 160
 161         __u8            flow_ctl_mode;
 162
 163         unsigned int    auto_accept_delay;
 164
 165         unsigned long   quirks;
 166
 167         atomic_t        cmd_cnt;
 168         unsigned int    acl_cnt;
 169         unsigned int    sco_cnt;
 170         unsigned int    le_cnt;
 171
 172         unsigned int    acl_mtu;
 173         unsigned int    sco_mtu;
 174         unsigned int    le_mtu;
 175         unsigned int    acl_pkts;
 176         unsigned int    sco_pkts;
 177         unsigned int    le_pkts;
 178
 179         __u16           block_len;
 180         __u16           block_mtu;
 181         __u16           num_blocks;
 182         __u16           block_cnt;
 183
 184         unsigned long   acl_last_tx;
 185         unsigned long   sco_last_tx;
 186         unsigned long   le_last_tx;
 187
 188         struct workqueue_struct *workqueue;
 189
 190         struct work_struct      power_on;
 191         struct delayed_work     power_off;
 192
 193         __u16                   discov_timeout;
 194         struct delayed_work     discov_off;
 195
 196         struct delayed_work     service_cache;
 197
 198         struct timer_list       cmd_timer;
 199
 200         struct work_struct      rx_work;
 201         struct work_struct      cmd_work;
 202         struct work_struct      tx_work;
 203
 204         struct sk_buff_head     rx_q;
 205         struct sk_buff_head     raw_q;
 206         struct sk_buff_head     cmd_q;
 207
 208         struct sk_buff          *sent_cmd;
 209         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 210
 211         struct mutex            req_lock;
 212         wait_queue_head_t       req_wait_q;
 213         __u32                   req_status;
 214         __u32                   req_result;
 215
 216         __u16                   init_last_cmd;
 217
 218         struct list_head        mgmt_pending;
 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 delayed_work     adv_work;
 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         unsigned long           dev_flags;
 252
 253         int (*open)(struct hci_dev *hdev);
 254         int (*close)(struct hci_dev *hdev);
 255         int (*flush)(struct hci_dev *hdev);
 256         int (*send)(struct sk_buff *skb);
 257         void (*destruct)(struct hci_dev *hdev);
 258         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 259         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 260 };
 261
 262 struct hci_conn {
 263         struct list_head list;
 264
 265         atomic_t        refcnt;
 266
 267         bdaddr_t        dst;
 268         __u8            dst_type;
 269         __u16           handle;
 270         __u16           state;
 271         __u8            mode;
 272         __u8            type;
 273         __u8            out;
 274         __u8            attempt;
 275         __u8            dev_class[3];
 276         __u8            features[8];
 277         __u8            ssp_mode;
 278         __u16           interval;
 279         __u16           pkt_type;
 280         __u16           link_policy;
 281         __u32           link_mode;
 282         __u8            key_type;
 283         __u8            auth_type;
 284         __u8            sec_level;
 285         __u8            pending_sec_level;
 286         __u8            pin_length;
 287         __u8            enc_key_size;
 288         __u8            io_capability;
 289         __u8            power_save;
 290         __u16           disc_timeout;
 291         unsigned long   pend;
 292
 293         __u8            remote_cap;
 294         __u8            remote_oob;
 295         __u8            remote_auth;
 296
 297         unsigned int    sent;
 298
 299         struct sk_buff_head data_q;
 300         struct list_head chan_list;
 301
 302         struct delayed_work disc_work;
 303         struct timer_list idle_timer;
 304         struct timer_list auto_accept_timer;
 305
 306         struct device   dev;
 307         atomic_t        devref;
 308
 309         struct hci_dev  *hdev;
 310         void            *l2cap_data;
 311         void            *sco_data;
 312         void            *smp_conn;
 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 list_head hci_dev_list;
 330 extern struct list_head hci_cb_list;
 331 extern rwlock_t hci_dev_list_lock;
 332 extern rwlock_t hci_cb_list_lock;
 333
 334 /* ----- HCI interface to upper protocols ----- */
 335 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 336 extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 337 extern int l2cap_disconn_ind(struct hci_conn *hcon);
 338 extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 339 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 340 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 341
 342 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 343 extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 344 extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 345 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 346
 347 /* ----- Inquiry cache ----- */
 348 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 349 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 350
 351 static inline void inquiry_cache_init(struct hci_dev *hdev)
 352 {
 353         struct inquiry_cache *c = &hdev->inq_cache;
 354         c->list = NULL;
 355 }
 356
 357 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 358 {
 359         struct inquiry_cache *c = &hdev->inq_cache;
 360         return c->list == NULL;
 361 }
 362
 363 static inline long inquiry_cache_age(struct hci_dev *hdev)
 364 {
 365         struct inquiry_cache *c = &hdev->inq_cache;
 366         return jiffies - c->timestamp;
 367 }
 368
 369 static inline long inquiry_entry_age(struct inquiry_entry *e)
 370 {
 371         return jiffies - e->timestamp;
 372 }
 373
 374 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 375                                                         bdaddr_t *bdaddr);
 376 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
 377
 378 /* ----- HCI Connections ----- */
 379 enum {
 380         HCI_CONN_AUTH_PEND,
 381         HCI_CONN_REAUTH_PEND,
 382         HCI_CONN_ENCRYPT_PEND,
 383         HCI_CONN_RSWITCH_PEND,
 384         HCI_CONN_MODE_CHANGE_PEND,
 385         HCI_CONN_SCO_SETUP_PEND,
 386         HCI_CONN_LE_SMP_PEND,
 387 };
 388
 389 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 390 {
 391         struct hci_conn_hash *h = &hdev->conn_hash;
 392         INIT_LIST_HEAD(&h->list);
 393         h->acl_num = 0;
 394         h->sco_num = 0;
 395         h->le_num = 0;
 396 }
 397
 398 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 399 {
 400         struct hci_conn_hash *h = &hdev->conn_hash;
 401         list_add_rcu(&c->list, &h->list);
 402         switch (c->type) {
 403         case ACL_LINK:
 404                 h->acl_num++;
 405                 break;
 406         case LE_LINK:
 407                 h->le_num++;
 408                 break;
 409         case SCO_LINK:
 410         case ESCO_LINK:
 411                 h->sco_num++;
 412                 break;
 413         }
 414 }
 415
 416 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 417 {
 418         struct hci_conn_hash *h = &hdev->conn_hash;
 419
 420         list_del_rcu(&c->list);
 421         synchronize_rcu();
 422
 423         switch (c->type) {
 424         case ACL_LINK:
 425                 h->acl_num--;
 426                 break;
 427         case LE_LINK:
 428                 h->le_num--;
 429                 break;
 430         case SCO_LINK:
 431         case ESCO_LINK:
 432                 h->sco_num--;
 433                 break;
 434         }
 435 }
 436
 437 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 438 {
 439         struct hci_conn_hash *h = &hdev->conn_hash;
 440         switch (type) {
 441         case ACL_LINK:
 442                 return h->acl_num;
 443         case LE_LINK:
 444                 return h->le_num;
 445         case SCO_LINK:
 446         case ESCO_LINK:
 447                 return h->sco_num;
 448         default:
 449                 return 0;
 450         }
 451 }
 452
 453 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 454                                                                 __u16 handle)
 455 {
 456         struct hci_conn_hash *h = &hdev->conn_hash;
 457         struct hci_conn  *c;
 458
 459         rcu_read_lock();
 460
 461         list_for_each_entry_rcu(c, &h->list, list) {
 462                 if (c->handle == handle) {
 463                         rcu_read_unlock();
 464                         return c;
 465                 }
 466         }
 467         rcu_read_unlock();
 468
 469         return NULL;
 470 }
 471
 472 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 473                                                         __u8 type, bdaddr_t *ba)
 474 {
 475         struct hci_conn_hash *h = &hdev->conn_hash;
 476         struct hci_conn  *c;
 477
 478         rcu_read_lock();
 479
 480         list_for_each_entry_rcu(c, &h->list, list) {
 481                 if (c->type == type && !bacmp(&c->dst, ba)) {
 482                         rcu_read_unlock();
 483                         return c;
 484                 }
 485         }
 486
 487         rcu_read_unlock();
 488
 489         return NULL;
 490 }
 491
 492 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 493                                                         __u8 type, __u16 state)
 494 {
 495         struct hci_conn_hash *h = &hdev->conn_hash;
 496         struct hci_conn  *c;
 497
 498         rcu_read_lock();
 499
 500         list_for_each_entry_rcu(c, &h->list, list) {
 501                 if (c->type == type && c->state == state) {
 502                         rcu_read_unlock();
 503                         return c;
 504                 }
 505         }
 506
 507         rcu_read_unlock();
 508
 509         return NULL;
 510 }
 511
 512 void hci_acl_connect(struct hci_conn *conn);
 513 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 514 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 515 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 516 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 517
 518 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 519 int hci_conn_del(struct hci_conn *conn);
 520 void hci_conn_hash_flush(struct hci_dev *hdev);
 521 void hci_conn_check_pending(struct hci_dev *hdev);
 522
 523 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 524 int hci_chan_del(struct hci_chan *chan);
 525 void hci_chan_list_flush(struct hci_conn *conn);
 526
 527 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 528                                                 __u8 sec_level, __u8 auth_type);
 529 int hci_conn_check_link_mode(struct hci_conn *conn);
 530 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 531 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 532 int hci_conn_change_link_key(struct hci_conn *conn);
 533 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 534
 535 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 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         cancel_delayed_work_sync(&conn->disc_work);
 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                 cancel_delayed_work_sync(&conn->disc_work);
 563                 queue_delayed_work(conn->hdev->workqueue,
 564                                         &conn->disc_work, jiffies + timeo);
 565         }
 566 }
 567
 568 /* ----- HCI Devices ----- */
 569 static inline void __hci_dev_put(struct hci_dev *d)
 570 {
 571         if (atomic_dec_and_test(&d->refcnt))
 572                 d->destruct(d);
 573 }
 574
 575 /*
 576  * hci_dev_put and hci_dev_hold are macros to avoid dragging all the
 577  * overhead of all the modular infrastructure into this header.
 578  */
 579 #define hci_dev_put(d)          \
 580 do {                            \
 581         __hci_dev_put(d);       \
 582         module_put(d->owner);   \
 583 } while (0)
 584
 585 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
 586 {
 587         atomic_inc(&d->refcnt);
 588         return d;
 589 }
 590
 591 #define hci_dev_hold(d)                                         \
 592 ({                                                              \
 593         try_module_get(d->owner) ? __hci_dev_hold(d) : NULL;    \
 594 })
 595
 596 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 597 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 598
 599 struct hci_dev *hci_dev_get(int index);
 600 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 601
 602 struct hci_dev *hci_alloc_dev(void);
 603 void hci_free_dev(struct hci_dev *hdev);
 604 int hci_register_dev(struct hci_dev *hdev);
 605 void hci_unregister_dev(struct hci_dev *hdev);
 606 int hci_suspend_dev(struct hci_dev *hdev);
 607 int hci_resume_dev(struct hci_dev *hdev);
 608 int hci_dev_open(__u16 dev);
 609 int hci_dev_close(__u16 dev);
 610 int hci_dev_reset(__u16 dev);
 611 int hci_dev_reset_stat(__u16 dev);
 612 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 613 int hci_get_dev_list(void __user *arg);
 614 int hci_get_dev_info(void __user *arg);
 615 int hci_get_conn_list(void __user *arg);
 616 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 617 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 618 int hci_inquiry(void __user *arg);
 619
 620 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 621 int hci_blacklist_clear(struct hci_dev *hdev);
 622 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr);
 623 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr);
 624
 625 int hci_uuids_clear(struct hci_dev *hdev);
 626
 627 int hci_link_keys_clear(struct hci_dev *hdev);
 628 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 629 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 630                         bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 631 struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 632 struct link_key *hci_find_link_key_type(struct hci_dev *hdev,
 633                                         bdaddr_t *bdaddr, u8 type);
 634 int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
 635                         u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16]);
 636 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 637
 638 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 639 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 640                                                         bdaddr_t *bdaddr);
 641 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 642                                                                 u8 *randomizer);
 643 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 644
 645 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
 646 int hci_adv_entries_clear(struct hci_dev *hdev);
 647 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
 648 int hci_add_adv_entry(struct hci_dev *hdev,
 649                                         struct hci_ev_le_advertising_info *ev);
 650
 651 void hci_del_off_timer(struct hci_dev *hdev);
 652
 653 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 654
 655 int hci_recv_frame(struct sk_buff *skb);
 656 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 657 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 658
 659 void hci_init_sysfs(struct hci_dev *hdev);
 660 int hci_add_sysfs(struct hci_dev *hdev);
 661 void hci_del_sysfs(struct hci_dev *hdev);
 662 void hci_conn_init_sysfs(struct hci_conn *conn);
 663 void hci_conn_add_sysfs(struct hci_conn *conn);
 664 void hci_conn_del_sysfs(struct hci_conn *conn);
 665
 666 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 667
 668 /* ----- LMP capabilities ----- */
 669 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 670 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 671 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 672 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 673 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 674 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 675 #define lmp_no_flush_capable(dev)  ((dev)->features[6] & LMP_NO_FLUSH)
 676 #define lmp_le_capable(dev)        ((dev)->features[4] & LMP_LE)
 677
 678 /* ----- Extended LMP capabilities ----- */
 679 #define lmp_host_le_capable(dev)   ((dev)->host_features[0] & LMP_HOST_LE)
 680
 681 /* ----- HCI protocols ----- */
 682 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 683                                                                 __u8 type)
 684 {
 685         switch (type) {
 686         case ACL_LINK:
 687                 return l2cap_connect_ind(hdev, bdaddr);
 688
 689         case SCO_LINK:
 690         case ESCO_LINK:
 691                 return sco_connect_ind(hdev, bdaddr);
 692
 693         default:
 694                 BT_ERR("unknown link type %d", type);
 695                 return -EINVAL;
 696         }
 697 }
 698
 699 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 700 {
 701         switch (conn->type) {
 702         case ACL_LINK:
 703         case LE_LINK:
 704                 l2cap_connect_cfm(conn, status);
 705                 break;
 706
 707         case SCO_LINK:
 708         case ESCO_LINK:
 709                 sco_connect_cfm(conn, status);
 710                 break;
 711
 712         default:
 713                 BT_ERR("unknown link type %d", conn->type);
 714                 break;
 715         }
 716
 717         if (conn->connect_cfm_cb)
 718                 conn->connect_cfm_cb(conn, status);
 719 }
 720
 721 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 722 {
 723         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 724                 return HCI_ERROR_REMOTE_USER_TERM;
 725
 726         return l2cap_disconn_ind(conn);
 727 }
 728
 729 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 730 {
 731         switch (conn->type) {
 732         case ACL_LINK:
 733         case LE_LINK:
 734                 l2cap_disconn_cfm(conn, reason);
 735                 break;
 736
 737         case SCO_LINK:
 738         case ESCO_LINK:
 739                 sco_disconn_cfm(conn, reason);
 740                 break;
 741
 742         default:
 743                 BT_ERR("unknown link type %d", conn->type);
 744                 break;
 745         }
 746
 747         if (conn->disconn_cfm_cb)
 748                 conn->disconn_cfm_cb(conn, reason);
 749 }
 750
 751 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 752 {
 753         __u8 encrypt;
 754
 755         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 756                 return;
 757
 758         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 759                 return;
 760
 761         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 762         l2cap_security_cfm(conn, status, encrypt);
 763
 764         if (conn->security_cfm_cb)
 765                 conn->security_cfm_cb(conn, status);
 766 }
 767
 768 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 769                                                                 __u8 encrypt)
 770 {
 771         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 772                 return;
 773
 774         l2cap_security_cfm(conn, status, encrypt);
 775
 776         if (conn->security_cfm_cb)
 777                 conn->security_cfm_cb(conn, status);
 778 }
 779
 780 /* ----- HCI callbacks ----- */
 781 struct hci_cb {
 782         struct list_head list;
 783
 784         char *name;
 785
 786         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 787                                                                 __u8 encrypt);
 788         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 789         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 790 };
 791
 792 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 793 {
 794         struct list_head *p;
 795         __u8 encrypt;
 796
 797         hci_proto_auth_cfm(conn, status);
 798
 799         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 800                 return;
 801
 802         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 803
 804         read_lock(&hci_cb_list_lock);
 805         list_for_each(p, &hci_cb_list) {
 806                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 807                 if (cb->security_cfm)
 808                         cb->security_cfm(conn, status, encrypt);
 809         }
 810         read_unlock(&hci_cb_list_lock);
 811 }
 812
 813 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 814                                                                 __u8 encrypt)
 815 {
 816         struct list_head *p;
 817
 818         if (conn->sec_level == BT_SECURITY_SDP)
 819                 conn->sec_level = BT_SECURITY_LOW;
 820
 821         if (conn->pending_sec_level > conn->sec_level)
 822                 conn->sec_level = conn->pending_sec_level;
 823
 824         hci_proto_encrypt_cfm(conn, status, encrypt);
 825
 826         read_lock(&hci_cb_list_lock);
 827         list_for_each(p, &hci_cb_list) {
 828                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 829                 if (cb->security_cfm)
 830                         cb->security_cfm(conn, status, encrypt);
 831         }
 832         read_unlock(&hci_cb_list_lock);
 833 }
 834
 835 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 836 {
 837         struct list_head *p;
 838
 839         read_lock(&hci_cb_list_lock);
 840         list_for_each(p, &hci_cb_list) {
 841                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 842                 if (cb->key_change_cfm)
 843                         cb->key_change_cfm(conn, status);
 844         }
 845         read_unlock(&hci_cb_list_lock);
 846 }
 847
 848 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 849                                                                 __u8 role)
 850 {
 851         struct list_head *p;
 852
 853         read_lock(&hci_cb_list_lock);
 854         list_for_each(p, &hci_cb_list) {
 855                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 856                 if (cb->role_switch_cfm)
 857                         cb->role_switch_cfm(conn, status, role);
 858         }
 859         read_unlock(&hci_cb_list_lock);
 860 }
 861
 862 int hci_register_cb(struct hci_cb *hcb);
 863 int hci_unregister_cb(struct hci_cb *hcb);
 864
 865 int hci_register_notifier(struct notifier_block *nb);
 866 int hci_unregister_notifier(struct notifier_block *nb);
 867
 868 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 869 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
 870 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 871
 872 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 873
 874 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 875
 876 /* ----- HCI Sockets ----- */
 877 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb,
 878                                                         struct sock *skip_sk);
 879
 880 /* Management interface */
 881 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
 882 int mgmt_index_added(struct hci_dev *hdev);
 883 int mgmt_index_removed(struct hci_dev *hdev);
 884 int mgmt_powered(struct hci_dev *hdev, u8 powered);
 885 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
 886 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
 887 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
 888 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
 889                                                                 u8 persistent);
 890 int mgmt_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 891                                                                 u8 addr_type);
 892 int mgmt_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 893                                                                 u8 addr_type);
 894 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
 895 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 896                                                 u8 addr_type, u8 status);
 897 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
 898 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 899                                                                 u8 status);
 900 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 901                                                                 u8 status);
 902 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
 903                                                 __le32 value, u8 confirm_hint);
 904 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 905                                                                 u8 status);
 906 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev,
 907                                                 bdaddr_t *bdaddr, u8 status);
 908 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr);
 909 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 910                                                                 u8 status);
 911 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev,
 912                                                 bdaddr_t *bdaddr, u8 status);
 913 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
 914 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
 915 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
 916                                                 u8 *randomizer, u8 status);
 917 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 918                                 u8 addr_type, u8 *dev_class, s8 rssi, u8 *eir);
 919 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *name);
 920 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
 921 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
 922 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
 923 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 924 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 925
 926 /* HCI info for socket */
 927 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 928
 929 /* HCI socket flags */
 930 #define HCI_PI_MGMT_INIT        0
 931
 932 struct hci_pinfo {
 933         struct bt_sock    bt;
 934         struct hci_dev    *hdev;
 935         struct hci_filter filter;
 936         __u32             cmsg_mask;
 937         unsigned short   channel;
 938         unsigned long     flags;
 939 };
 940
 941 /* HCI security filter */
 942 #define HCI_SFLT_MAX_OGF  5
 943
 944 struct hci_sec_filter {
 945         __u32 type_mask;
 946         __u32 event_mask[2];
 947         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 948 };
 949
 950 /* ----- HCI requests ----- */
 951 #define HCI_REQ_DONE      0
 952 #define HCI_REQ_PEND      1
 953 #define HCI_REQ_CANCELED  2
 954
 955 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
 956 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
 957
 958 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
 959
 960 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
 961                                         u16 latency, u16 to_multiplier);
 962 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
 963                                                         __u8 ltk[16]);
 964 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]);
 965 void hci_le_ltk_neg_reply(struct hci_conn *conn);
 966
 967 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
 968 int hci_cancel_inquiry(struct hci_dev *hdev);
 969
 970 #endif /* __HCI_CORE_H */