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 discovery_state {
  60         enum {
  61                 DISCOVERY_STOPPED,
  62                 DISCOVERY_STARTING,
  63                 DISCOVERY_INQUIRY,
  64                 DISCOVERY_RESOLVING,
  65                 DISCOVERY_STOPPING,
  66         } state;
  67         struct list_head all;           /* All devices found during inquiry */
  68         struct list_head unknown;       /* Name state not known */
  69         struct list_head resolve;       /* Name needs to be resolved */
  70         __u32           timestamp;
  71 };
  72
  73 struct hci_conn_hash {
  74         struct list_head list;
  75         unsigned int     acl_num;
  76         unsigned int     sco_num;
  77         unsigned int     le_num;
  78 };
  79
  80 struct bdaddr_list {
  81         struct list_head list;
  82         bdaddr_t bdaddr;
  83 };
  84
  85 struct bt_uuid {
  86         struct list_head list;
  87         u8 uuid[16];
  88         u8 svc_hint;
  89 };
  90
  91 struct key_master_id {
  92         __le16 ediv;
  93         u8 rand[8];
  94 } __packed;
  95
  96 struct link_key_data {
  97         bdaddr_t bdaddr;
  98         u8 type;
  99         u8 val[16];
 100         u8 pin_len;
 101         u8 dlen;
 102         u8 data[0];
 103 } __packed;
 104
 105 struct link_key {
 106         struct list_head list;
 107         bdaddr_t bdaddr;
 108         u8 type;
 109         u8 val[16];
 110         u8 pin_len;
 111         u8 dlen;
 112         u8 data[0];
 113 };
 114
 115 struct oob_data {
 116         struct list_head list;
 117         bdaddr_t bdaddr;
 118         u8 hash[16];
 119         u8 randomizer[16];
 120 };
 121
 122 struct adv_entry {
 123         struct list_head list;
 124         bdaddr_t bdaddr;
 125         u8 bdaddr_type;
 126 };
 127
 128 #define NUM_REASSEMBLY 4
 129 struct hci_dev {
 130         struct list_head list;
 131         struct mutex    lock;
 132
 133         char            name[8];
 134         unsigned long   flags;
 135         __u16           id;
 136         __u8            bus;
 137         __u8            dev_type;
 138         bdaddr_t        bdaddr;
 139         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 140         __u8            eir[HCI_MAX_EIR_LENGTH];
 141         __u8            dev_class[3];
 142         __u8            major_class;
 143         __u8            minor_class;
 144         __u8            features[8];
 145         __u8            host_features[8];
 146         __u8            commands[64];
 147         __u8            ssp_mode;
 148         __u8            hci_ver;
 149         __u16           hci_rev;
 150         __u8            lmp_ver;
 151         __u16           manufacturer;
 152         __le16          lmp_subver;
 153         __u16           voice_setting;
 154         __u8            io_capability;
 155
 156         __u16           pkt_type;
 157         __u16           esco_type;
 158         __u16           link_policy;
 159         __u16           link_mode;
 160
 161         __u32           idle_timeout;
 162         __u16           sniff_min_interval;
 163         __u16           sniff_max_interval;
 164
 165         __u8            amp_status;
 166         __u32           amp_total_bw;
 167         __u32           amp_max_bw;
 168         __u32           amp_min_latency;
 169         __u32           amp_max_pdu;
 170         __u8            amp_type;
 171         __u16           amp_pal_cap;
 172         __u16           amp_assoc_size;
 173         __u32           amp_max_flush_to;
 174         __u32           amp_be_flush_to;
 175
 176         __u8            flow_ctl_mode;
 177
 178         unsigned int    auto_accept_delay;
 179
 180         unsigned long   quirks;
 181
 182         atomic_t        cmd_cnt;
 183         unsigned int    acl_cnt;
 184         unsigned int    sco_cnt;
 185         unsigned int    le_cnt;
 186
 187         unsigned int    acl_mtu;
 188         unsigned int    sco_mtu;
 189         unsigned int    le_mtu;
 190         unsigned int    acl_pkts;
 191         unsigned int    sco_pkts;
 192         unsigned int    le_pkts;
 193
 194         __u16           block_len;
 195         __u16           block_mtu;
 196         __u16           num_blocks;
 197         __u16           block_cnt;
 198
 199         unsigned long   acl_last_tx;
 200         unsigned long   sco_last_tx;
 201         unsigned long   le_last_tx;
 202
 203         struct workqueue_struct *workqueue;
 204
 205         struct work_struct      power_on;
 206         struct delayed_work     power_off;
 207
 208         __u16                   discov_timeout;
 209         struct delayed_work     discov_off;
 210
 211         struct delayed_work     service_cache;
 212
 213         struct timer_list       cmd_timer;
 214
 215         struct work_struct      rx_work;
 216         struct work_struct      cmd_work;
 217         struct work_struct      tx_work;
 218
 219         struct sk_buff_head     rx_q;
 220         struct sk_buff_head     raw_q;
 221         struct sk_buff_head     cmd_q;
 222
 223         struct sk_buff          *sent_cmd;
 224         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 225
 226         struct mutex            req_lock;
 227         wait_queue_head_t       req_wait_q;
 228         __u32                   req_status;
 229         __u32                   req_result;
 230
 231         __u16                   init_last_cmd;
 232
 233         struct list_head        mgmt_pending;
 234
 235         struct discovery_state  discovery;
 236         struct hci_conn_hash    conn_hash;
 237         struct list_head        blacklist;
 238
 239         struct list_head        uuids;
 240
 241         struct list_head        link_keys;
 242
 243         struct list_head        remote_oob_data;
 244
 245         struct list_head        adv_entries;
 246         struct delayed_work     adv_work;
 247
 248         struct hci_dev_stats    stat;
 249
 250         struct sk_buff_head     driver_init;
 251
 252         void                    *driver_data;
 253         void                    *core_data;
 254
 255         atomic_t                promisc;
 256
 257         struct dentry           *debugfs;
 258
 259         struct device           *parent;
 260         struct device           dev;
 261
 262         struct rfkill           *rfkill;
 263
 264         unsigned long           dev_flags;
 265
 266         int (*open)(struct hci_dev *hdev);
 267         int (*close)(struct hci_dev *hdev);
 268         int (*flush)(struct hci_dev *hdev);
 269         int (*send)(struct sk_buff *skb);
 270         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 271         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 272 };
 273
 274 struct hci_conn {
 275         struct list_head list;
 276
 277         atomic_t        refcnt;
 278
 279         bdaddr_t        dst;
 280         __u8            dst_type;
 281         __u16           handle;
 282         __u16           state;
 283         __u8            mode;
 284         __u8            type;
 285         __u8            out;
 286         __u8            attempt;
 287         __u8            dev_class[3];
 288         __u8            features[8];
 289         __u8            ssp_mode;
 290         __u16           interval;
 291         __u16           pkt_type;
 292         __u16           link_policy;
 293         __u32           link_mode;
 294         __u8            key_type;
 295         __u8            auth_type;
 296         __u8            sec_level;
 297         __u8            pending_sec_level;
 298         __u8            pin_length;
 299         __u8            enc_key_size;
 300         __u8            io_capability;
 301         __u8            power_save;
 302         __u16           disc_timeout;
 303         unsigned long   pend;
 304
 305         __u8            remote_cap;
 306         __u8            remote_oob;
 307         __u8            remote_auth;
 308
 309         unsigned int    sent;
 310
 311         struct sk_buff_head data_q;
 312         struct list_head chan_list;
 313
 314         struct delayed_work disc_work;
 315         struct timer_list idle_timer;
 316         struct timer_list auto_accept_timer;
 317
 318         struct device   dev;
 319         atomic_t        devref;
 320
 321         struct hci_dev  *hdev;
 322         void            *l2cap_data;
 323         void            *sco_data;
 324         void            *smp_conn;
 325
 326         struct hci_conn *link;
 327
 328         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 329         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 330         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 331 };
 332
 333 struct hci_chan {
 334         struct list_head list;
 335
 336         struct hci_conn *conn;
 337         struct sk_buff_head data_q;
 338         unsigned int    sent;
 339 };
 340
 341 extern struct list_head hci_dev_list;
 342 extern struct list_head hci_cb_list;
 343 extern rwlock_t hci_dev_list_lock;
 344 extern rwlock_t hci_cb_list_lock;
 345
 346 /* ----- HCI interface to upper protocols ----- */
 347 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 348 extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 349 extern int l2cap_disconn_ind(struct hci_conn *hcon);
 350 extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 351 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 352 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 353
 354 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 355 extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 356 extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 357 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 358
 359 /* ----- Inquiry cache ----- */
 360 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 361 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 362
 363 static inline void discovery_init(struct hci_dev *hdev)
 364 {
 365         hdev->discovery.state = DISCOVERY_STOPPED;
 366         INIT_LIST_HEAD(&hdev->discovery.all);
 367         INIT_LIST_HEAD(&hdev->discovery.unknown);
 368         INIT_LIST_HEAD(&hdev->discovery.resolve);
 369 }
 370
 371 bool hci_discovery_active(struct hci_dev *hdev);
 372
 373 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 374
 375 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 376 {
 377         return list_empty(&hdev->discovery.all);
 378 }
 379
 380 static inline long inquiry_cache_age(struct hci_dev *hdev)
 381 {
 382         struct discovery_state *c = &hdev->discovery;
 383         return jiffies - c->timestamp;
 384 }
 385
 386 static inline long inquiry_entry_age(struct inquiry_entry *e)
 387 {
 388         return jiffies - e->timestamp;
 389 }
 390
 391 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 392                                                         bdaddr_t *bdaddr);
 393 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 394                                                         bdaddr_t *bdaddr);
 395 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 396                                                         bdaddr_t *bdaddr,
 397                                                         int state);
 398 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 399                                                         bool name_known);
 400
 401 /* ----- HCI Connections ----- */
 402 enum {
 403         HCI_CONN_AUTH_PEND,
 404         HCI_CONN_REAUTH_PEND,
 405         HCI_CONN_ENCRYPT_PEND,
 406         HCI_CONN_RSWITCH_PEND,
 407         HCI_CONN_MODE_CHANGE_PEND,
 408         HCI_CONN_SCO_SETUP_PEND,
 409         HCI_CONN_LE_SMP_PEND,
 410 };
 411
 412 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 413 {
 414         struct hci_conn_hash *h = &hdev->conn_hash;
 415         INIT_LIST_HEAD(&h->list);
 416         h->acl_num = 0;
 417         h->sco_num = 0;
 418         h->le_num = 0;
 419 }
 420
 421 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 422 {
 423         struct hci_conn_hash *h = &hdev->conn_hash;
 424         list_add_rcu(&c->list, &h->list);
 425         switch (c->type) {
 426         case ACL_LINK:
 427                 h->acl_num++;
 428                 break;
 429         case LE_LINK:
 430                 h->le_num++;
 431                 break;
 432         case SCO_LINK:
 433         case ESCO_LINK:
 434                 h->sco_num++;
 435                 break;
 436         }
 437 }
 438
 439 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 440 {
 441         struct hci_conn_hash *h = &hdev->conn_hash;
 442
 443         list_del_rcu(&c->list);
 444         synchronize_rcu();
 445
 446         switch (c->type) {
 447         case ACL_LINK:
 448                 h->acl_num--;
 449                 break;
 450         case LE_LINK:
 451                 h->le_num--;
 452                 break;
 453         case SCO_LINK:
 454         case ESCO_LINK:
 455                 h->sco_num--;
 456                 break;
 457         }
 458 }
 459
 460 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 461 {
 462         struct hci_conn_hash *h = &hdev->conn_hash;
 463         switch (type) {
 464         case ACL_LINK:
 465                 return h->acl_num;
 466         case LE_LINK:
 467                 return h->le_num;
 468         case SCO_LINK:
 469         case ESCO_LINK:
 470                 return h->sco_num;
 471         default:
 472                 return 0;
 473         }
 474 }
 475
 476 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 477                                                                 __u16 handle)
 478 {
 479         struct hci_conn_hash *h = &hdev->conn_hash;
 480         struct hci_conn  *c;
 481
 482         rcu_read_lock();
 483
 484         list_for_each_entry_rcu(c, &h->list, list) {
 485                 if (c->handle == handle) {
 486                         rcu_read_unlock();
 487                         return c;
 488                 }
 489         }
 490         rcu_read_unlock();
 491
 492         return NULL;
 493 }
 494
 495 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 496                                                         __u8 type, bdaddr_t *ba)
 497 {
 498         struct hci_conn_hash *h = &hdev->conn_hash;
 499         struct hci_conn  *c;
 500
 501         rcu_read_lock();
 502
 503         list_for_each_entry_rcu(c, &h->list, list) {
 504                 if (c->type == type && !bacmp(&c->dst, ba)) {
 505                         rcu_read_unlock();
 506                         return c;
 507                 }
 508         }
 509
 510         rcu_read_unlock();
 511
 512         return NULL;
 513 }
 514
 515 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 516                                                         __u8 type, __u16 state)
 517 {
 518         struct hci_conn_hash *h = &hdev->conn_hash;
 519         struct hci_conn  *c;
 520
 521         rcu_read_lock();
 522
 523         list_for_each_entry_rcu(c, &h->list, list) {
 524                 if (c->type == type && c->state == state) {
 525                         rcu_read_unlock();
 526                         return c;
 527                 }
 528         }
 529
 530         rcu_read_unlock();
 531
 532         return NULL;
 533 }
 534
 535 void hci_acl_connect(struct hci_conn *conn);
 536 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 537 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 538 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 539 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 540
 541 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 542 int hci_conn_del(struct hci_conn *conn);
 543 void hci_conn_hash_flush(struct hci_dev *hdev);
 544 void hci_conn_check_pending(struct hci_dev *hdev);
 545
 546 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 547 int hci_chan_del(struct hci_chan *chan);
 548 void hci_chan_list_flush(struct hci_conn *conn);
 549
 550 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 551                                                 __u8 sec_level, __u8 auth_type);
 552 int hci_conn_check_link_mode(struct hci_conn *conn);
 553 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 554 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 555 int hci_conn_change_link_key(struct hci_conn *conn);
 556 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 557
 558 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 559
 560 void hci_conn_hold_device(struct hci_conn *conn);
 561 void hci_conn_put_device(struct hci_conn *conn);
 562
 563 static inline void hci_conn_hold(struct hci_conn *conn)
 564 {
 565         atomic_inc(&conn->refcnt);
 566         cancel_delayed_work_sync(&conn->disc_work);
 567 }
 568
 569 static inline void hci_conn_put(struct hci_conn *conn)
 570 {
 571         if (atomic_dec_and_test(&conn->refcnt)) {
 572                 unsigned long timeo;
 573                 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
 574                         del_timer(&conn->idle_timer);
 575                         if (conn->state == BT_CONNECTED) {
 576                                 timeo = msecs_to_jiffies(conn->disc_timeout);
 577                                 if (!conn->out)
 578                                         timeo *= 2;
 579                         } else {
 580                                 timeo = msecs_to_jiffies(10);
 581                         }
 582                 } else {
 583                         timeo = msecs_to_jiffies(10);
 584                 }
 585                 cancel_delayed_work_sync(&conn->disc_work);
 586                 queue_delayed_work(conn->hdev->workqueue,
 587                                         &conn->disc_work, timeo);
 588         }
 589 }
 590
 591 /* ----- HCI Devices ----- */
 592 static inline void hci_dev_put(struct hci_dev *d)
 593 {
 594         put_device(&d->dev);
 595 }
 596
 597 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 598 {
 599         get_device(&d->dev);
 600         return d;
 601 }
 602
 603 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 604 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 605
 606 struct hci_dev *hci_dev_get(int index);
 607 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 608
 609 struct hci_dev *hci_alloc_dev(void);
 610 void hci_free_dev(struct hci_dev *hdev);
 611 int hci_register_dev(struct hci_dev *hdev);
 612 void hci_unregister_dev(struct hci_dev *hdev);
 613 int hci_suspend_dev(struct hci_dev *hdev);
 614 int hci_resume_dev(struct hci_dev *hdev);
 615 int hci_dev_open(__u16 dev);
 616 int hci_dev_close(__u16 dev);
 617 int hci_dev_reset(__u16 dev);
 618 int hci_dev_reset_stat(__u16 dev);
 619 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 620 int hci_get_dev_list(void __user *arg);
 621 int hci_get_dev_info(void __user *arg);
 622 int hci_get_conn_list(void __user *arg);
 623 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 624 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 625 int hci_inquiry(void __user *arg);
 626
 627 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 628 int hci_blacklist_clear(struct hci_dev *hdev);
 629 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr);
 630 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr);
 631
 632 int hci_uuids_clear(struct hci_dev *hdev);
 633
 634 int hci_link_keys_clear(struct hci_dev *hdev);
 635 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 636 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 637                         bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 638 struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 639 struct link_key *hci_find_link_key_type(struct hci_dev *hdev,
 640                                         bdaddr_t *bdaddr, u8 type);
 641 int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
 642                         u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16]);
 643 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 644
 645 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 646 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 647                                                         bdaddr_t *bdaddr);
 648 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 649                                                                 u8 *randomizer);
 650 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 651
 652 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
 653 int hci_adv_entries_clear(struct hci_dev *hdev);
 654 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
 655 int hci_add_adv_entry(struct hci_dev *hdev,
 656                                         struct hci_ev_le_advertising_info *ev);
 657
 658 void hci_del_off_timer(struct hci_dev *hdev);
 659
 660 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 661
 662 int hci_recv_frame(struct sk_buff *skb);
 663 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 664 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 665
 666 void hci_init_sysfs(struct hci_dev *hdev);
 667 int hci_add_sysfs(struct hci_dev *hdev);
 668 void hci_del_sysfs(struct hci_dev *hdev);
 669 void hci_conn_init_sysfs(struct hci_conn *conn);
 670 void hci_conn_add_sysfs(struct hci_conn *conn);
 671 void hci_conn_del_sysfs(struct hci_conn *conn);
 672
 673 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 674
 675 /* ----- LMP capabilities ----- */
 676 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 677 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 678 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 679 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 680 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 681 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 682 #define lmp_no_flush_capable(dev)  ((dev)->features[6] & LMP_NO_FLUSH)
 683 #define lmp_le_capable(dev)        ((dev)->features[4] & LMP_LE)
 684
 685 /* ----- Extended LMP capabilities ----- */
 686 #define lmp_host_le_capable(dev)   ((dev)->host_features[0] & LMP_HOST_LE)
 687
 688 /* ----- HCI protocols ----- */
 689 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 690                                                                 __u8 type)
 691 {
 692         switch (type) {
 693         case ACL_LINK:
 694                 return l2cap_connect_ind(hdev, bdaddr);
 695
 696         case SCO_LINK:
 697         case ESCO_LINK:
 698                 return sco_connect_ind(hdev, bdaddr);
 699
 700         default:
 701                 BT_ERR("unknown link type %d", type);
 702                 return -EINVAL;
 703         }
 704 }
 705
 706 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 707 {
 708         switch (conn->type) {
 709         case ACL_LINK:
 710         case LE_LINK:
 711                 l2cap_connect_cfm(conn, status);
 712                 break;
 713
 714         case SCO_LINK:
 715         case ESCO_LINK:
 716                 sco_connect_cfm(conn, status);
 717                 break;
 718
 719         default:
 720                 BT_ERR("unknown link type %d", conn->type);
 721                 break;
 722         }
 723
 724         if (conn->connect_cfm_cb)
 725                 conn->connect_cfm_cb(conn, status);
 726 }
 727
 728 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 729 {
 730         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 731                 return HCI_ERROR_REMOTE_USER_TERM;
 732
 733         return l2cap_disconn_ind(conn);
 734 }
 735
 736 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 737 {
 738         switch (conn->type) {
 739         case ACL_LINK:
 740         case LE_LINK:
 741                 l2cap_disconn_cfm(conn, reason);
 742                 break;
 743
 744         case SCO_LINK:
 745         case ESCO_LINK:
 746                 sco_disconn_cfm(conn, reason);
 747                 break;
 748
 749         default:
 750                 BT_ERR("unknown link type %d", conn->type);
 751                 break;
 752         }
 753
 754         if (conn->disconn_cfm_cb)
 755                 conn->disconn_cfm_cb(conn, reason);
 756 }
 757
 758 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 759 {
 760         __u8 encrypt;
 761
 762         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 763                 return;
 764
 765         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 766                 return;
 767
 768         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 769         l2cap_security_cfm(conn, status, encrypt);
 770
 771         if (conn->security_cfm_cb)
 772                 conn->security_cfm_cb(conn, status);
 773 }
 774
 775 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 776                                                                 __u8 encrypt)
 777 {
 778         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 779                 return;
 780
 781         l2cap_security_cfm(conn, status, encrypt);
 782
 783         if (conn->security_cfm_cb)
 784                 conn->security_cfm_cb(conn, status);
 785 }
 786
 787 /* ----- HCI callbacks ----- */
 788 struct hci_cb {
 789         struct list_head list;
 790
 791         char *name;
 792
 793         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 794                                                                 __u8 encrypt);
 795         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 796         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 797 };
 798
 799 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 800 {
 801         struct list_head *p;
 802         __u8 encrypt;
 803
 804         hci_proto_auth_cfm(conn, status);
 805
 806         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 807                 return;
 808
 809         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 810
 811         read_lock(&hci_cb_list_lock);
 812         list_for_each(p, &hci_cb_list) {
 813                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 814                 if (cb->security_cfm)
 815                         cb->security_cfm(conn, status, encrypt);
 816         }
 817         read_unlock(&hci_cb_list_lock);
 818 }
 819
 820 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 821                                                                 __u8 encrypt)
 822 {
 823         struct list_head *p;
 824
 825         if (conn->sec_level == BT_SECURITY_SDP)
 826                 conn->sec_level = BT_SECURITY_LOW;
 827
 828         if (conn->pending_sec_level > conn->sec_level)
 829                 conn->sec_level = conn->pending_sec_level;
 830
 831         hci_proto_encrypt_cfm(conn, status, encrypt);
 832
 833         read_lock(&hci_cb_list_lock);
 834         list_for_each(p, &hci_cb_list) {
 835                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 836                 if (cb->security_cfm)
 837                         cb->security_cfm(conn, status, encrypt);
 838         }
 839         read_unlock(&hci_cb_list_lock);
 840 }
 841
 842 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 843 {
 844         struct list_head *p;
 845
 846         read_lock(&hci_cb_list_lock);
 847         list_for_each(p, &hci_cb_list) {
 848                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 849                 if (cb->key_change_cfm)
 850                         cb->key_change_cfm(conn, status);
 851         }
 852         read_unlock(&hci_cb_list_lock);
 853 }
 854
 855 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 856                                                                 __u8 role)
 857 {
 858         struct list_head *p;
 859
 860         read_lock(&hci_cb_list_lock);
 861         list_for_each(p, &hci_cb_list) {
 862                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 863                 if (cb->role_switch_cfm)
 864                         cb->role_switch_cfm(conn, status, role);
 865         }
 866         read_unlock(&hci_cb_list_lock);
 867 }
 868
 869 int hci_register_cb(struct hci_cb *hcb);
 870 int hci_unregister_cb(struct hci_cb *hcb);
 871
 872 int hci_register_notifier(struct notifier_block *nb);
 873 int hci_unregister_notifier(struct notifier_block *nb);
 874
 875 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 876 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
 877 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 878
 879 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 880
 881 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 882
 883 /* ----- HCI Sockets ----- */
 884 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb,
 885                                                         struct sock *skip_sk);
 886
 887 /* Management interface */
 888 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
 889 int mgmt_index_added(struct hci_dev *hdev);
 890 int mgmt_index_removed(struct hci_dev *hdev);
 891 int mgmt_powered(struct hci_dev *hdev, u8 powered);
 892 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
 893 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
 894 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
 895 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
 896                                                                 u8 persistent);
 897 int mgmt_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 898                                                                 u8 addr_type);
 899 int mgmt_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 900                                                                 u8 addr_type);
 901 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
 902 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 903                                                 u8 addr_type, u8 status);
 904 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
 905 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 906                                                                 u8 status);
 907 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 908                                                                 u8 status);
 909 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
 910                                                 __le32 value, u8 confirm_hint);
 911 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 912                                                                 u8 status);
 913 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev,
 914                                                 bdaddr_t *bdaddr, u8 status);
 915 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr);
 916 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 917                                                                 u8 status);
 918 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev,
 919                                                 bdaddr_t *bdaddr, u8 status);
 920 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
 921 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
 922 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
 923                                                 u8 *randomizer, u8 status);
 924 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 925                                         u8 addr_type, u8 *dev_class, s8 rssi,
 926                                         u8 cfm_name, u8 *eir);
 927 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *name);
 928 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
 929 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
 930 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
 931 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 932 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 933
 934 /* HCI info for socket */
 935 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 936
 937 /* HCI socket flags */
 938 #define HCI_PI_MGMT_INIT        0
 939
 940 struct hci_pinfo {
 941         struct bt_sock    bt;
 942         struct hci_dev    *hdev;
 943         struct hci_filter filter;
 944         __u32             cmsg_mask;
 945         unsigned short   channel;
 946         unsigned long     flags;
 947 };
 948
 949 /* HCI security filter */
 950 #define HCI_SFLT_MAX_OGF  5
 951
 952 struct hci_sec_filter {
 953         __u32 type_mask;
 954         __u32 event_mask[2];
 955         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 956 };
 957
 958 /* ----- HCI requests ----- */
 959 #define HCI_REQ_DONE      0
 960 #define HCI_REQ_PEND      1
 961 #define HCI_REQ_CANCELED  2
 962
 963 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
 964 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
 965
 966 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
 967
 968 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
 969                                         u16 latency, u16 to_multiplier);
 970 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
 971                                                         __u8 ltk[16]);
 972 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]);
 973 void hci_le_ltk_neg_reply(struct hci_conn *conn);
 974
 975 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
 976 int hci_cancel_inquiry(struct hci_dev *hdev);
 977
 978 #endif /* __HCI_CORE_H */