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 list_head        all;            /* inq_cache.all */
  48         struct list_head        list;           /* unknown or resolve */
  49         enum {
  50                 NAME_NOT_KNOWN,
  51                 NAME_NEEDED,
  52                 NAME_PENDING,
  53                 NAME_KNOWN,
  54         } name_state;
  55         __u32                   timestamp;
  56         struct inquiry_data     data;
  57 };
  58
  59 struct inquiry_cache {
  60         struct list_head all;           /* All devices found during inquiry */
  61         struct list_head unknown;       /* Name state not known */
  62         struct list_head resolve;       /* Name needs to be resolved */
  63         __u32           timestamp;
  64 };
  65
  66 struct hci_conn_hash {
  67         struct list_head list;
  68         unsigned int     acl_num;
  69         unsigned int     sco_num;
  70         unsigned int     le_num;
  71 };
  72
  73 struct bdaddr_list {
  74         struct list_head list;
  75         bdaddr_t bdaddr;
  76 };
  77
  78 struct bt_uuid {
  79         struct list_head list;
  80         u8 uuid[16];
  81         u8 svc_hint;
  82 };
  83
  84 struct key_master_id {
  85         __le16 ediv;
  86         u8 rand[8];
  87 } __packed;
  88
  89 struct link_key_data {
  90         bdaddr_t bdaddr;
  91         u8 type;
  92         u8 val[16];
  93         u8 pin_len;
  94         u8 dlen;
  95         u8 data[0];
  96 } __packed;
  97
  98 struct link_key {
  99         struct list_head list;
 100         bdaddr_t bdaddr;
 101         u8 type;
 102         u8 val[16];
 103         u8 pin_len;
 104         u8 dlen;
 105         u8 data[0];
 106 };
 107
 108 struct oob_data {
 109         struct list_head list;
 110         bdaddr_t bdaddr;
 111         u8 hash[16];
 112         u8 randomizer[16];
 113 };
 114
 115 struct adv_entry {
 116         struct list_head list;
 117         bdaddr_t bdaddr;
 118         u8 bdaddr_type;
 119 };
 120
 121 #define NUM_REASSEMBLY 4
 122 struct hci_dev {
 123         struct list_head list;
 124         struct mutex    lock;
 125         atomic_t        refcnt;
 126
 127         char            name[8];
 128         unsigned long   flags;
 129         __u16           id;
 130         __u8            bus;
 131         __u8            dev_type;
 132         bdaddr_t        bdaddr;
 133         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 134         __u8            eir[HCI_MAX_EIR_LENGTH];
 135         __u8            dev_class[3];
 136         __u8            major_class;
 137         __u8            minor_class;
 138         __u8            features[8];
 139         __u8            host_features[8];
 140         __u8            commands[64];
 141         __u8            ssp_mode;
 142         __u8            hci_ver;
 143         __u16           hci_rev;
 144         __u8            lmp_ver;
 145         __u16           manufacturer;
 146         __le16          lmp_subver;
 147         __u16           voice_setting;
 148         __u8            io_capability;
 149
 150         __u16           pkt_type;
 151         __u16           esco_type;
 152         __u16           link_policy;
 153         __u16           link_mode;
 154
 155         __u32           idle_timeout;
 156         __u16           sniff_min_interval;
 157         __u16           sniff_max_interval;
 158
 159         __u8            amp_status;
 160         __u32           amp_total_bw;
 161         __u32           amp_max_bw;
 162         __u32           amp_min_latency;
 163         __u32           amp_max_pdu;
 164         __u8            amp_type;
 165         __u16           amp_pal_cap;
 166         __u16           amp_assoc_size;
 167         __u32           amp_max_flush_to;
 168         __u32           amp_be_flush_to;
 169
 170         __u8            flow_ctl_mode;
 171
 172         unsigned int    auto_accept_delay;
 173
 174         unsigned long   quirks;
 175
 176         atomic_t        cmd_cnt;
 177         unsigned int    acl_cnt;
 178         unsigned int    sco_cnt;
 179         unsigned int    le_cnt;
 180
 181         unsigned int    acl_mtu;
 182         unsigned int    sco_mtu;
 183         unsigned int    le_mtu;
 184         unsigned int    acl_pkts;
 185         unsigned int    sco_pkts;
 186         unsigned int    le_pkts;
 187
 188         __u16           block_len;
 189         __u16           block_mtu;
 190         __u16           num_blocks;
 191         __u16           block_cnt;
 192
 193         unsigned long   acl_last_tx;
 194         unsigned long   sco_last_tx;
 195         unsigned long   le_last_tx;
 196
 197         struct workqueue_struct *workqueue;
 198
 199         struct work_struct      power_on;
 200         struct delayed_work     power_off;
 201
 202         __u16                   discov_timeout;
 203         struct delayed_work     discov_off;
 204
 205         struct delayed_work     service_cache;
 206
 207         struct timer_list       cmd_timer;
 208
 209         struct work_struct      rx_work;
 210         struct work_struct      cmd_work;
 211         struct work_struct      tx_work;
 212
 213         struct sk_buff_head     rx_q;
 214         struct sk_buff_head     raw_q;
 215         struct sk_buff_head     cmd_q;
 216
 217         struct sk_buff          *sent_cmd;
 218         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 219
 220         struct mutex            req_lock;
 221         wait_queue_head_t       req_wait_q;
 222         __u32                   req_status;
 223         __u32                   req_result;
 224
 225         __u16                   init_last_cmd;
 226
 227         struct list_head        mgmt_pending;
 228
 229         struct inquiry_cache    inq_cache;
 230         struct hci_conn_hash    conn_hash;
 231         struct list_head        blacklist;
 232
 233         struct list_head        uuids;
 234
 235         struct list_head        link_keys;
 236
 237         struct list_head        remote_oob_data;
 238
 239         struct list_head        adv_entries;
 240         struct delayed_work     adv_work;
 241
 242         struct hci_dev_stats    stat;
 243
 244         struct sk_buff_head     driver_init;
 245
 246         void                    *driver_data;
 247         void                    *core_data;
 248
 249         atomic_t                promisc;
 250
 251         struct dentry           *debugfs;
 252
 253         struct device           *parent;
 254         struct device           dev;
 255
 256         struct rfkill           *rfkill;
 257
 258         struct module           *owner;
 259
 260         unsigned long           dev_flags;
 261
 262         int (*open)(struct hci_dev *hdev);
 263         int (*close)(struct hci_dev *hdev);
 264         int (*flush)(struct hci_dev *hdev);
 265         int (*send)(struct sk_buff *skb);
 266         void (*destruct)(struct hci_dev *hdev);
 267         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 268         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 269 };
 270
 271 struct hci_conn {
 272         struct list_head list;
 273
 274         atomic_t        refcnt;
 275
 276         bdaddr_t        dst;
 277         __u8            dst_type;
 278         __u16           handle;
 279         __u16           state;
 280         __u8            mode;
 281         __u8            type;
 282         __u8            out;
 283         __u8            attempt;
 284         __u8            dev_class[3];
 285         __u8            features[8];
 286         __u8            ssp_mode;
 287         __u16           interval;
 288         __u16           pkt_type;
 289         __u16           link_policy;
 290         __u32           link_mode;
 291         __u8            key_type;
 292         __u8            auth_type;
 293         __u8            sec_level;
 294         __u8            pending_sec_level;
 295         __u8            pin_length;
 296         __u8            enc_key_size;
 297         __u8            io_capability;
 298         __u8            power_save;
 299         __u16           disc_timeout;
 300         unsigned long   pend;
 301
 302         __u8            remote_cap;
 303         __u8            remote_oob;
 304         __u8            remote_auth;
 305
 306         unsigned int    sent;
 307
 308         struct sk_buff_head data_q;
 309         struct list_head chan_list;
 310
 311         struct delayed_work disc_work;
 312         struct timer_list idle_timer;
 313         struct timer_list auto_accept_timer;
 314
 315         struct device   dev;
 316         atomic_t        devref;
 317
 318         struct hci_dev  *hdev;
 319         void            *l2cap_data;
 320         void            *sco_data;
 321         void            *smp_conn;
 322
 323         struct hci_conn *link;
 324
 325         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 326         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 327         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 328 };
 329
 330 struct hci_chan {
 331         struct list_head list;
 332
 333         struct hci_conn *conn;
 334         struct sk_buff_head data_q;
 335         unsigned int    sent;
 336 };
 337
 338 extern struct list_head hci_dev_list;
 339 extern struct list_head hci_cb_list;
 340 extern rwlock_t hci_dev_list_lock;
 341 extern rwlock_t hci_cb_list_lock;
 342
 343 /* ----- HCI interface to upper protocols ----- */
 344 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 345 extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 346 extern int l2cap_disconn_ind(struct hci_conn *hcon);
 347 extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 348 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 349 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 350
 351 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 352 extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 353 extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 354 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 355
 356 /* ----- Inquiry cache ----- */
 357 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 358 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 359
 360 static inline void inquiry_cache_init(struct hci_dev *hdev)
 361 {
 362         INIT_LIST_HEAD(&hdev->inq_cache.all);
 363         INIT_LIST_HEAD(&hdev->inq_cache.unknown);
 364         INIT_LIST_HEAD(&hdev->inq_cache.resolve);
 365 }
 366
 367 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 368 {
 369         return list_empty(&hdev->inq_cache.all);
 370 }
 371
 372 static inline long inquiry_cache_age(struct hci_dev *hdev)
 373 {
 374         struct inquiry_cache *c = &hdev->inq_cache;
 375         return jiffies - c->timestamp;
 376 }
 377
 378 static inline long inquiry_entry_age(struct inquiry_entry *e)
 379 {
 380         return jiffies - e->timestamp;
 381 }
 382
 383 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 384                                                         bdaddr_t *bdaddr);
 385 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 386                                                         bdaddr_t *bdaddr);
 387 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 388                                                         bool name_known);
 389
 390 /* ----- HCI Connections ----- */
 391 enum {
 392         HCI_CONN_AUTH_PEND,
 393         HCI_CONN_REAUTH_PEND,
 394         HCI_CONN_ENCRYPT_PEND,
 395         HCI_CONN_RSWITCH_PEND,
 396         HCI_CONN_MODE_CHANGE_PEND,
 397         HCI_CONN_SCO_SETUP_PEND,
 398         HCI_CONN_LE_SMP_PEND,
 399 };
 400
 401 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 402 {
 403         struct hci_conn_hash *h = &hdev->conn_hash;
 404         INIT_LIST_HEAD(&h->list);
 405         h->acl_num = 0;
 406         h->sco_num = 0;
 407         h->le_num = 0;
 408 }
 409
 410 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 411 {
 412         struct hci_conn_hash *h = &hdev->conn_hash;
 413         list_add_rcu(&c->list, &h->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 void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 429 {
 430         struct hci_conn_hash *h = &hdev->conn_hash;
 431
 432         list_del_rcu(&c->list);
 433         synchronize_rcu();
 434
 435         switch (c->type) {
 436         case ACL_LINK:
 437                 h->acl_num--;
 438                 break;
 439         case LE_LINK:
 440                 h->le_num--;
 441                 break;
 442         case SCO_LINK:
 443         case ESCO_LINK:
 444                 h->sco_num--;
 445                 break;
 446         }
 447 }
 448
 449 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 450 {
 451         struct hci_conn_hash *h = &hdev->conn_hash;
 452         switch (type) {
 453         case ACL_LINK:
 454                 return h->acl_num;
 455         case LE_LINK:
 456                 return h->le_num;
 457         case SCO_LINK:
 458         case ESCO_LINK:
 459                 return h->sco_num;
 460         default:
 461                 return 0;
 462         }
 463 }
 464
 465 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 466                                                                 __u16 handle)
 467 {
 468         struct hci_conn_hash *h = &hdev->conn_hash;
 469         struct hci_conn  *c;
 470
 471         rcu_read_lock();
 472
 473         list_for_each_entry_rcu(c, &h->list, list) {
 474                 if (c->handle == handle) {
 475                         rcu_read_unlock();
 476                         return c;
 477                 }
 478         }
 479         rcu_read_unlock();
 480
 481         return NULL;
 482 }
 483
 484 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 485                                                         __u8 type, bdaddr_t *ba)
 486 {
 487         struct hci_conn_hash *h = &hdev->conn_hash;
 488         struct hci_conn  *c;
 489
 490         rcu_read_lock();
 491
 492         list_for_each_entry_rcu(c, &h->list, list) {
 493                 if (c->type == type && !bacmp(&c->dst, ba)) {
 494                         rcu_read_unlock();
 495                         return c;
 496                 }
 497         }
 498
 499         rcu_read_unlock();
 500
 501         return NULL;
 502 }
 503
 504 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 505                                                         __u8 type, __u16 state)
 506 {
 507         struct hci_conn_hash *h = &hdev->conn_hash;
 508         struct hci_conn  *c;
 509
 510         rcu_read_lock();
 511
 512         list_for_each_entry_rcu(c, &h->list, list) {
 513                 if (c->type == type && c->state == state) {
 514                         rcu_read_unlock();
 515                         return c;
 516                 }
 517         }
 518
 519         rcu_read_unlock();
 520
 521         return NULL;
 522 }
 523
 524 void hci_acl_connect(struct hci_conn *conn);
 525 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 526 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 527 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 528 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 529
 530 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 531 int hci_conn_del(struct hci_conn *conn);
 532 void hci_conn_hash_flush(struct hci_dev *hdev);
 533 void hci_conn_check_pending(struct hci_dev *hdev);
 534
 535 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 536 int hci_chan_del(struct hci_chan *chan);
 537 void hci_chan_list_flush(struct hci_conn *conn);
 538
 539 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 540                                                 __u8 sec_level, __u8 auth_type);
 541 int hci_conn_check_link_mode(struct hci_conn *conn);
 542 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 543 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 544 int hci_conn_change_link_key(struct hci_conn *conn);
 545 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 546
 547 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 548
 549 void hci_conn_hold_device(struct hci_conn *conn);
 550 void hci_conn_put_device(struct hci_conn *conn);
 551
 552 static inline void hci_conn_hold(struct hci_conn *conn)
 553 {
 554         atomic_inc(&conn->refcnt);
 555         cancel_delayed_work_sync(&conn->disc_work);
 556 }
 557
 558 static inline void hci_conn_put(struct hci_conn *conn)
 559 {
 560         if (atomic_dec_and_test(&conn->refcnt)) {
 561                 unsigned long timeo;
 562                 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
 563                         del_timer(&conn->idle_timer);
 564                         if (conn->state == BT_CONNECTED) {
 565                                 timeo = msecs_to_jiffies(conn->disc_timeout);
 566                                 if (!conn->out)
 567                                         timeo *= 2;
 568                         } else {
 569                                 timeo = msecs_to_jiffies(10);
 570                         }
 571                 } else {
 572                         timeo = msecs_to_jiffies(10);
 573                 }
 574                 cancel_delayed_work_sync(&conn->disc_work);
 575                 queue_delayed_work(conn->hdev->workqueue,
 576                                         &conn->disc_work, jiffies + timeo);
 577         }
 578 }
 579
 580 /* ----- HCI Devices ----- */
 581 static inline void __hci_dev_put(struct hci_dev *d)
 582 {
 583         if (atomic_dec_and_test(&d->refcnt))
 584                 d->destruct(d);
 585 }
 586
 587 /*
 588  * hci_dev_put and hci_dev_hold are macros to avoid dragging all the
 589  * overhead of all the modular infrastructure into this header.
 590  */
 591 #define hci_dev_put(d)          \
 592 do {                            \
 593         __hci_dev_put(d);       \
 594         module_put(d->owner);   \
 595 } while (0)
 596
 597 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
 598 {
 599         atomic_inc(&d->refcnt);
 600         return d;
 601 }
 602
 603 #define hci_dev_hold(d)                                         \
 604 ({                                                              \
 605         try_module_get(d->owner) ? __hci_dev_hold(d) : NULL;    \
 606 })
 607
 608 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 609 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 610
 611 struct hci_dev *hci_dev_get(int index);
 612 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 613
 614 struct hci_dev *hci_alloc_dev(void);
 615 void hci_free_dev(struct hci_dev *hdev);
 616 int hci_register_dev(struct hci_dev *hdev);
 617 void hci_unregister_dev(struct hci_dev *hdev);
 618 int hci_suspend_dev(struct hci_dev *hdev);
 619 int hci_resume_dev(struct hci_dev *hdev);
 620 int hci_dev_open(__u16 dev);
 621 int hci_dev_close(__u16 dev);
 622 int hci_dev_reset(__u16 dev);
 623 int hci_dev_reset_stat(__u16 dev);
 624 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 625 int hci_get_dev_list(void __user *arg);
 626 int hci_get_dev_info(void __user *arg);
 627 int hci_get_conn_list(void __user *arg);
 628 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 629 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 630 int hci_inquiry(void __user *arg);
 631
 632 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 633 int hci_blacklist_clear(struct hci_dev *hdev);
 634 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr);
 635 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr);
 636
 637 int hci_uuids_clear(struct hci_dev *hdev);
 638
 639 int hci_link_keys_clear(struct hci_dev *hdev);
 640 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 641 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 642                         bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 643 struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 644 struct link_key *hci_find_link_key_type(struct hci_dev *hdev,
 645                                         bdaddr_t *bdaddr, u8 type);
 646 int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
 647                         u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16]);
 648 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 649
 650 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 651 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 652                                                         bdaddr_t *bdaddr);
 653 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 654                                                                 u8 *randomizer);
 655 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 656
 657 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
 658 int hci_adv_entries_clear(struct hci_dev *hdev);
 659 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
 660 int hci_add_adv_entry(struct hci_dev *hdev,
 661                                         struct hci_ev_le_advertising_info *ev);
 662
 663 void hci_del_off_timer(struct hci_dev *hdev);
 664
 665 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 666
 667 int hci_recv_frame(struct sk_buff *skb);
 668 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 669 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 670
 671 void hci_init_sysfs(struct hci_dev *hdev);
 672 int hci_add_sysfs(struct hci_dev *hdev);
 673 void hci_del_sysfs(struct hci_dev *hdev);
 674 void hci_conn_init_sysfs(struct hci_conn *conn);
 675 void hci_conn_add_sysfs(struct hci_conn *conn);
 676 void hci_conn_del_sysfs(struct hci_conn *conn);
 677
 678 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 679
 680 /* ----- LMP capabilities ----- */
 681 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 682 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 683 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 684 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 685 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 686 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 687 #define lmp_no_flush_capable(dev)  ((dev)->features[6] & LMP_NO_FLUSH)
 688 #define lmp_le_capable(dev)        ((dev)->features[4] & LMP_LE)
 689
 690 /* ----- Extended LMP capabilities ----- */
 691 #define lmp_host_le_capable(dev)   ((dev)->host_features[0] & LMP_HOST_LE)
 692
 693 /* ----- HCI protocols ----- */
 694 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 695                                                                 __u8 type)
 696 {
 697         switch (type) {
 698         case ACL_LINK:
 699                 return l2cap_connect_ind(hdev, bdaddr);
 700
 701         case SCO_LINK:
 702         case ESCO_LINK:
 703                 return sco_connect_ind(hdev, bdaddr);
 704
 705         default:
 706                 BT_ERR("unknown link type %d", type);
 707                 return -EINVAL;
 708         }
 709 }
 710
 711 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 712 {
 713         switch (conn->type) {
 714         case ACL_LINK:
 715         case LE_LINK:
 716                 l2cap_connect_cfm(conn, status);
 717                 break;
 718
 719         case SCO_LINK:
 720         case ESCO_LINK:
 721                 sco_connect_cfm(conn, status);
 722                 break;
 723
 724         default:
 725                 BT_ERR("unknown link type %d", conn->type);
 726                 break;
 727         }
 728
 729         if (conn->connect_cfm_cb)
 730                 conn->connect_cfm_cb(conn, status);
 731 }
 732
 733 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 734 {
 735         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 736                 return HCI_ERROR_REMOTE_USER_TERM;
 737
 738         return l2cap_disconn_ind(conn);
 739 }
 740
 741 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 742 {
 743         switch (conn->type) {
 744         case ACL_LINK:
 745         case LE_LINK:
 746                 l2cap_disconn_cfm(conn, reason);
 747                 break;
 748
 749         case SCO_LINK:
 750         case ESCO_LINK:
 751                 sco_disconn_cfm(conn, reason);
 752                 break;
 753
 754         default:
 755                 BT_ERR("unknown link type %d", conn->type);
 756                 break;
 757         }
 758
 759         if (conn->disconn_cfm_cb)
 760                 conn->disconn_cfm_cb(conn, reason);
 761 }
 762
 763 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 764 {
 765         __u8 encrypt;
 766
 767         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 768                 return;
 769
 770         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 771                 return;
 772
 773         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 774         l2cap_security_cfm(conn, status, encrypt);
 775
 776         if (conn->security_cfm_cb)
 777                 conn->security_cfm_cb(conn, status);
 778 }
 779
 780 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 781                                                                 __u8 encrypt)
 782 {
 783         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 784                 return;
 785
 786         l2cap_security_cfm(conn, status, encrypt);
 787
 788         if (conn->security_cfm_cb)
 789                 conn->security_cfm_cb(conn, status);
 790 }
 791
 792 /* ----- HCI callbacks ----- */
 793 struct hci_cb {
 794         struct list_head list;
 795
 796         char *name;
 797
 798         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 799                                                                 __u8 encrypt);
 800         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 801         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 802 };
 803
 804 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 805 {
 806         struct list_head *p;
 807         __u8 encrypt;
 808
 809         hci_proto_auth_cfm(conn, status);
 810
 811         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 812                 return;
 813
 814         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 815
 816         read_lock(&hci_cb_list_lock);
 817         list_for_each(p, &hci_cb_list) {
 818                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 819                 if (cb->security_cfm)
 820                         cb->security_cfm(conn, status, encrypt);
 821         }
 822         read_unlock(&hci_cb_list_lock);
 823 }
 824
 825 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 826                                                                 __u8 encrypt)
 827 {
 828         struct list_head *p;
 829
 830         if (conn->sec_level == BT_SECURITY_SDP)
 831                 conn->sec_level = BT_SECURITY_LOW;
 832
 833         if (conn->pending_sec_level > conn->sec_level)
 834                 conn->sec_level = conn->pending_sec_level;
 835
 836         hci_proto_encrypt_cfm(conn, status, encrypt);
 837
 838         read_lock(&hci_cb_list_lock);
 839         list_for_each(p, &hci_cb_list) {
 840                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 841                 if (cb->security_cfm)
 842                         cb->security_cfm(conn, status, encrypt);
 843         }
 844         read_unlock(&hci_cb_list_lock);
 845 }
 846
 847 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 848 {
 849         struct list_head *p;
 850
 851         read_lock(&hci_cb_list_lock);
 852         list_for_each(p, &hci_cb_list) {
 853                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 854                 if (cb->key_change_cfm)
 855                         cb->key_change_cfm(conn, status);
 856         }
 857         read_unlock(&hci_cb_list_lock);
 858 }
 859
 860 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 861                                                                 __u8 role)
 862 {
 863         struct list_head *p;
 864
 865         read_lock(&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->role_switch_cfm)
 869                         cb->role_switch_cfm(conn, status, role);
 870         }
 871         read_unlock(&hci_cb_list_lock);
 872 }
 873
 874 int hci_register_cb(struct hci_cb *hcb);
 875 int hci_unregister_cb(struct hci_cb *hcb);
 876
 877 int hci_register_notifier(struct notifier_block *nb);
 878 int hci_unregister_notifier(struct notifier_block *nb);
 879
 880 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 881 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
 882 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 883
 884 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 885
 886 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 887
 888 /* ----- HCI Sockets ----- */
 889 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb,
 890                                                         struct sock *skip_sk);
 891
 892 /* Management interface */
 893 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
 894 int mgmt_index_added(struct hci_dev *hdev);
 895 int mgmt_index_removed(struct hci_dev *hdev);
 896 int mgmt_powered(struct hci_dev *hdev, u8 powered);
 897 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
 898 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
 899 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
 900 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
 901                                                                 u8 persistent);
 902 int mgmt_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 903                                                                 u8 addr_type);
 904 int mgmt_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 905                                                                 u8 addr_type);
 906 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
 907 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 908                                                 u8 addr_type, u8 status);
 909 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
 910 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 911                                                                 u8 status);
 912 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 913                                                                 u8 status);
 914 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
 915                                                 __le32 value, u8 confirm_hint);
 916 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 917                                                                 u8 status);
 918 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev,
 919                                                 bdaddr_t *bdaddr, u8 status);
 920 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr);
 921 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 922                                                                 u8 status);
 923 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev,
 924                                                 bdaddr_t *bdaddr, u8 status);
 925 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
 926 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
 927 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
 928                                                 u8 *randomizer, u8 status);
 929 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 930                                         u8 addr_type, u8 *dev_class, s8 rssi,
 931                                         u8 cfm_name, u8 *eir);
 932 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *name);
 933 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
 934 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
 935 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
 936 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 937 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 938
 939 /* HCI info for socket */
 940 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 941
 942 /* HCI socket flags */
 943 #define HCI_PI_MGMT_INIT        0
 944
 945 struct hci_pinfo {
 946         struct bt_sock    bt;
 947         struct hci_dev    *hdev;
 948         struct hci_filter filter;
 949         __u32             cmsg_mask;
 950         unsigned short   channel;
 951         unsigned long     flags;
 952 };
 953
 954 /* HCI security filter */
 955 #define HCI_SFLT_MAX_OGF  5
 956
 957 struct hci_sec_filter {
 958         __u32 type_mask;
 959         __u32 event_mask[2];
 960         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 961 };
 962
 963 /* ----- HCI requests ----- */
 964 #define HCI_REQ_DONE      0
 965 #define HCI_REQ_PEND      1
 966 #define HCI_REQ_CANCELED  2
 967
 968 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
 969 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
 970
 971 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
 972
 973 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
 974                                         u16 latency, u16 to_multiplier);
 975 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
 976                                                         __u8 ltk[16]);
 977 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]);
 978 void hci_le_ltk_neg_reply(struct hci_conn *conn);
 979
 980 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
 981 int hci_cancel_inquiry(struct hci_dev *hdev);
 982
 983 #endif /* __HCI_CORE_H */