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 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 399                                                 struct inquiry_entry *ie);
 400 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 401                                                         bool name_known);
 402
 403 /* ----- HCI Connections ----- */
 404 enum {
 405         HCI_CONN_AUTH_PEND,
 406         HCI_CONN_REAUTH_PEND,
 407         HCI_CONN_ENCRYPT_PEND,
 408         HCI_CONN_RSWITCH_PEND,
 409         HCI_CONN_MODE_CHANGE_PEND,
 410         HCI_CONN_SCO_SETUP_PEND,
 411         HCI_CONN_LE_SMP_PEND,
 412 };
 413
 414 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 415 {
 416         struct hci_conn_hash *h = &hdev->conn_hash;
 417         INIT_LIST_HEAD(&h->list);
 418         h->acl_num = 0;
 419         h->sco_num = 0;
 420         h->le_num = 0;
 421 }
 422
 423 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 424 {
 425         struct hci_conn_hash *h = &hdev->conn_hash;
 426         list_add_rcu(&c->list, &h->list);
 427         switch (c->type) {
 428         case ACL_LINK:
 429                 h->acl_num++;
 430                 break;
 431         case LE_LINK:
 432                 h->le_num++;
 433                 break;
 434         case SCO_LINK:
 435         case ESCO_LINK:
 436                 h->sco_num++;
 437                 break;
 438         }
 439 }
 440
 441 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 442 {
 443         struct hci_conn_hash *h = &hdev->conn_hash;
 444
 445         list_del_rcu(&c->list);
 446         synchronize_rcu();
 447
 448         switch (c->type) {
 449         case ACL_LINK:
 450                 h->acl_num--;
 451                 break;
 452         case LE_LINK:
 453                 h->le_num--;
 454                 break;
 455         case SCO_LINK:
 456         case ESCO_LINK:
 457                 h->sco_num--;
 458                 break;
 459         }
 460 }
 461
 462 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 463 {
 464         struct hci_conn_hash *h = &hdev->conn_hash;
 465         switch (type) {
 466         case ACL_LINK:
 467                 return h->acl_num;
 468         case LE_LINK:
 469                 return h->le_num;
 470         case SCO_LINK:
 471         case ESCO_LINK:
 472                 return h->sco_num;
 473         default:
 474                 return 0;
 475         }
 476 }
 477
 478 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 479                                                                 __u16 handle)
 480 {
 481         struct hci_conn_hash *h = &hdev->conn_hash;
 482         struct hci_conn  *c;
 483
 484         rcu_read_lock();
 485
 486         list_for_each_entry_rcu(c, &h->list, list) {
 487                 if (c->handle == handle) {
 488                         rcu_read_unlock();
 489                         return c;
 490                 }
 491         }
 492         rcu_read_unlock();
 493
 494         return NULL;
 495 }
 496
 497 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 498                                                         __u8 type, bdaddr_t *ba)
 499 {
 500         struct hci_conn_hash *h = &hdev->conn_hash;
 501         struct hci_conn  *c;
 502
 503         rcu_read_lock();
 504
 505         list_for_each_entry_rcu(c, &h->list, list) {
 506                 if (c->type == type && !bacmp(&c->dst, ba)) {
 507                         rcu_read_unlock();
 508                         return c;
 509                 }
 510         }
 511
 512         rcu_read_unlock();
 513
 514         return NULL;
 515 }
 516
 517 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 518                                                         __u8 type, __u16 state)
 519 {
 520         struct hci_conn_hash *h = &hdev->conn_hash;
 521         struct hci_conn  *c;
 522
 523         rcu_read_lock();
 524
 525         list_for_each_entry_rcu(c, &h->list, list) {
 526                 if (c->type == type && c->state == state) {
 527                         rcu_read_unlock();
 528                         return c;
 529                 }
 530         }
 531
 532         rcu_read_unlock();
 533
 534         return NULL;
 535 }
 536
 537 void hci_acl_connect(struct hci_conn *conn);
 538 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 539 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 540 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 541 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 542
 543 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 544 int hci_conn_del(struct hci_conn *conn);
 545 void hci_conn_hash_flush(struct hci_dev *hdev);
 546 void hci_conn_check_pending(struct hci_dev *hdev);
 547
 548 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 549 int hci_chan_del(struct hci_chan *chan);
 550 void hci_chan_list_flush(struct hci_conn *conn);
 551
 552 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 553                                                 __u8 sec_level, __u8 auth_type);
 554 int hci_conn_check_link_mode(struct hci_conn *conn);
 555 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 556 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 557 int hci_conn_change_link_key(struct hci_conn *conn);
 558 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 559
 560 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 561
 562 void hci_conn_hold_device(struct hci_conn *conn);
 563 void hci_conn_put_device(struct hci_conn *conn);
 564
 565 static inline void hci_conn_hold(struct hci_conn *conn)
 566 {
 567         atomic_inc(&conn->refcnt);
 568         cancel_delayed_work_sync(&conn->disc_work);
 569 }
 570
 571 static inline void hci_conn_put(struct hci_conn *conn)
 572 {
 573         if (atomic_dec_and_test(&conn->refcnt)) {
 574                 unsigned long timeo;
 575                 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
 576                         del_timer(&conn->idle_timer);
 577                         if (conn->state == BT_CONNECTED) {
 578                                 timeo = msecs_to_jiffies(conn->disc_timeout);
 579                                 if (!conn->out)
 580                                         timeo *= 2;
 581                         } else {
 582                                 timeo = msecs_to_jiffies(10);
 583                         }
 584                 } else {
 585                         timeo = msecs_to_jiffies(10);
 586                 }
 587                 cancel_delayed_work_sync(&conn->disc_work);
 588                 queue_delayed_work(conn->hdev->workqueue,
 589                                         &conn->disc_work, timeo);
 590         }
 591 }
 592
 593 /* ----- HCI Devices ----- */
 594 static inline void hci_dev_put(struct hci_dev *d)
 595 {
 596         put_device(&d->dev);
 597 }
 598
 599 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 600 {
 601         get_device(&d->dev);
 602         return d;
 603 }
 604
 605 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 606 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 607
 608 struct hci_dev *hci_dev_get(int index);
 609 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 610
 611 struct hci_dev *hci_alloc_dev(void);
 612 void hci_free_dev(struct hci_dev *hdev);
 613 int hci_register_dev(struct hci_dev *hdev);
 614 void hci_unregister_dev(struct hci_dev *hdev);
 615 int hci_suspend_dev(struct hci_dev *hdev);
 616 int hci_resume_dev(struct hci_dev *hdev);
 617 int hci_dev_open(__u16 dev);
 618 int hci_dev_close(__u16 dev);
 619 int hci_dev_reset(__u16 dev);
 620 int hci_dev_reset_stat(__u16 dev);
 621 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 622 int hci_get_dev_list(void __user *arg);
 623 int hci_get_dev_info(void __user *arg);
 624 int hci_get_conn_list(void __user *arg);
 625 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 626 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 627 int hci_inquiry(void __user *arg);
 628
 629 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 630 int hci_blacklist_clear(struct hci_dev *hdev);
 631 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr);
 632 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr);
 633
 634 int hci_uuids_clear(struct hci_dev *hdev);
 635
 636 int hci_link_keys_clear(struct hci_dev *hdev);
 637 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 638 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 639                         bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 640 struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 641 struct link_key *hci_find_link_key_type(struct hci_dev *hdev,
 642                                         bdaddr_t *bdaddr, u8 type);
 643 int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
 644                         u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16]);
 645 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 646
 647 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 648 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 649                                                         bdaddr_t *bdaddr);
 650 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 651                                                                 u8 *randomizer);
 652 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 653
 654 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
 655 int hci_adv_entries_clear(struct hci_dev *hdev);
 656 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
 657 int hci_add_adv_entry(struct hci_dev *hdev,
 658                                         struct hci_ev_le_advertising_info *ev);
 659
 660 void hci_del_off_timer(struct hci_dev *hdev);
 661
 662 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 663
 664 int hci_recv_frame(struct sk_buff *skb);
 665 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 666 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 667
 668 void hci_init_sysfs(struct hci_dev *hdev);
 669 int hci_add_sysfs(struct hci_dev *hdev);
 670 void hci_del_sysfs(struct hci_dev *hdev);
 671 void hci_conn_init_sysfs(struct hci_conn *conn);
 672 void hci_conn_add_sysfs(struct hci_conn *conn);
 673 void hci_conn_del_sysfs(struct hci_conn *conn);
 674
 675 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 676
 677 /* ----- LMP capabilities ----- */
 678 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 679 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 680 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 681 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 682 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 683 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 684 #define lmp_no_flush_capable(dev)  ((dev)->features[6] & LMP_NO_FLUSH)
 685 #define lmp_le_capable(dev)        ((dev)->features[4] & LMP_LE)
 686
 687 /* ----- Extended LMP capabilities ----- */
 688 #define lmp_host_le_capable(dev)   ((dev)->host_features[0] & LMP_HOST_LE)
 689
 690 /* ----- HCI protocols ----- */
 691 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 692                                                                 __u8 type)
 693 {
 694         switch (type) {
 695         case ACL_LINK:
 696                 return l2cap_connect_ind(hdev, bdaddr);
 697
 698         case SCO_LINK:
 699         case ESCO_LINK:
 700                 return sco_connect_ind(hdev, bdaddr);
 701
 702         default:
 703                 BT_ERR("unknown link type %d", type);
 704                 return -EINVAL;
 705         }
 706 }
 707
 708 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 709 {
 710         switch (conn->type) {
 711         case ACL_LINK:
 712         case LE_LINK:
 713                 l2cap_connect_cfm(conn, status);
 714                 break;
 715
 716         case SCO_LINK:
 717         case ESCO_LINK:
 718                 sco_connect_cfm(conn, status);
 719                 break;
 720
 721         default:
 722                 BT_ERR("unknown link type %d", conn->type);
 723                 break;
 724         }
 725
 726         if (conn->connect_cfm_cb)
 727                 conn->connect_cfm_cb(conn, status);
 728 }
 729
 730 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 731 {
 732         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 733                 return HCI_ERROR_REMOTE_USER_TERM;
 734
 735         return l2cap_disconn_ind(conn);
 736 }
 737
 738 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 739 {
 740         switch (conn->type) {
 741         case ACL_LINK:
 742         case LE_LINK:
 743                 l2cap_disconn_cfm(conn, reason);
 744                 break;
 745
 746         case SCO_LINK:
 747         case ESCO_LINK:
 748                 sco_disconn_cfm(conn, reason);
 749                 break;
 750
 751         default:
 752                 BT_ERR("unknown link type %d", conn->type);
 753                 break;
 754         }
 755
 756         if (conn->disconn_cfm_cb)
 757                 conn->disconn_cfm_cb(conn, reason);
 758 }
 759
 760 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 761 {
 762         __u8 encrypt;
 763
 764         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 765                 return;
 766
 767         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 768                 return;
 769
 770         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 771         l2cap_security_cfm(conn, status, encrypt);
 772
 773         if (conn->security_cfm_cb)
 774                 conn->security_cfm_cb(conn, status);
 775 }
 776
 777 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 778                                                                 __u8 encrypt)
 779 {
 780         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 781                 return;
 782
 783         l2cap_security_cfm(conn, status, encrypt);
 784
 785         if (conn->security_cfm_cb)
 786                 conn->security_cfm_cb(conn, status);
 787 }
 788
 789 /* ----- HCI callbacks ----- */
 790 struct hci_cb {
 791         struct list_head list;
 792
 793         char *name;
 794
 795         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 796                                                                 __u8 encrypt);
 797         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 798         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 799 };
 800
 801 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 802 {
 803         struct list_head *p;
 804         __u8 encrypt;
 805
 806         hci_proto_auth_cfm(conn, status);
 807
 808         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 809                 return;
 810
 811         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 812
 813         read_lock(&hci_cb_list_lock);
 814         list_for_each(p, &hci_cb_list) {
 815                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 816                 if (cb->security_cfm)
 817                         cb->security_cfm(conn, status, encrypt);
 818         }
 819         read_unlock(&hci_cb_list_lock);
 820 }
 821
 822 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 823                                                                 __u8 encrypt)
 824 {
 825         struct list_head *p;
 826
 827         if (conn->sec_level == BT_SECURITY_SDP)
 828                 conn->sec_level = BT_SECURITY_LOW;
 829
 830         if (conn->pending_sec_level > conn->sec_level)
 831                 conn->sec_level = conn->pending_sec_level;
 832
 833         hci_proto_encrypt_cfm(conn, status, encrypt);
 834
 835         read_lock(&hci_cb_list_lock);
 836         list_for_each(p, &hci_cb_list) {
 837                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 838                 if (cb->security_cfm)
 839                         cb->security_cfm(conn, status, encrypt);
 840         }
 841         read_unlock(&hci_cb_list_lock);
 842 }
 843
 844 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 845 {
 846         struct list_head *p;
 847
 848         read_lock(&hci_cb_list_lock);
 849         list_for_each(p, &hci_cb_list) {
 850                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 851                 if (cb->key_change_cfm)
 852                         cb->key_change_cfm(conn, status);
 853         }
 854         read_unlock(&hci_cb_list_lock);
 855 }
 856
 857 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 858                                                                 __u8 role)
 859 {
 860         struct list_head *p;
 861
 862         read_lock(&hci_cb_list_lock);
 863         list_for_each(p, &hci_cb_list) {
 864                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 865                 if (cb->role_switch_cfm)
 866                         cb->role_switch_cfm(conn, status, role);
 867         }
 868         read_unlock(&hci_cb_list_lock);
 869 }
 870
 871 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
 872 {
 873         u8 field_len;
 874         size_t parsed;
 875
 876         for (parsed = 0; parsed < data_len - 1; parsed += field_len) {
 877                 field_len = data[0];
 878
 879                 if (field_len == 0)
 880                         break;
 881
 882                 parsed += field_len + 1;
 883
 884                 if (parsed > data_len)
 885                         break;
 886
 887                 if (data[1] == type)
 888                         return true;
 889
 890                 data += field_len + 1;
 891         }
 892
 893         return false;
 894 }
 895
 896 int hci_register_cb(struct hci_cb *hcb);
 897 int hci_unregister_cb(struct hci_cb *hcb);
 898
 899 int hci_register_notifier(struct notifier_block *nb);
 900 int hci_unregister_notifier(struct notifier_block *nb);
 901
 902 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 903 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
 904 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 905
 906 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 907
 908 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 909
 910 /* ----- HCI Sockets ----- */
 911 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb,
 912                                                         struct sock *skip_sk);
 913
 914 /* Management interface */
 915 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
 916 int mgmt_index_added(struct hci_dev *hdev);
 917 int mgmt_index_removed(struct hci_dev *hdev);
 918 int mgmt_powered(struct hci_dev *hdev, u8 powered);
 919 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
 920 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
 921 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
 922 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
 923                                                                 u8 persistent);
 924 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 925                                                                 u8 addr_type);
 926 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
 927                                                 u8 link_type, u8 addr_type);
 928 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
 929 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 930                                                 u8 addr_type, u8 status);
 931 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
 932 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 933                                                                 u8 status);
 934 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 935                                                                 u8 status);
 936 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
 937                                                 __le32 value, u8 confirm_hint);
 938 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 939                                                                 u8 status);
 940 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev,
 941                                                 bdaddr_t *bdaddr, u8 status);
 942 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr);
 943 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 944                                                                 u8 status);
 945 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev,
 946                                                 bdaddr_t *bdaddr, u8 status);
 947 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
 948 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
 949 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
 950                                                 u8 *randomizer, u8 status);
 951 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 952                                         u8 addr_type, u8 *dev_class, s8 rssi,
 953                                         u8 cfm_name, u8 *eir, u16 eir_len);
 954 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *name);
 955 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
 956 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
 957 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
 958 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 959 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 960
 961 /* HCI info for socket */
 962 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 963
 964 /* HCI socket flags */
 965 #define HCI_PI_MGMT_INIT        0
 966
 967 struct hci_pinfo {
 968         struct bt_sock    bt;
 969         struct hci_dev    *hdev;
 970         struct hci_filter filter;
 971         __u32             cmsg_mask;
 972         unsigned short   channel;
 973         unsigned long     flags;
 974 };
 975
 976 /* HCI security filter */
 977 #define HCI_SFLT_MAX_OGF  5
 978
 979 struct hci_sec_filter {
 980         __u32 type_mask;
 981         __u32 event_mask[2];
 982         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 983 };
 984
 985 /* ----- HCI requests ----- */
 986 #define HCI_REQ_DONE      0
 987 #define HCI_REQ_PEND      1
 988 #define HCI_REQ_CANCELED  2
 989
 990 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
 991 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
 992
 993 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
 994
 995 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
 996                                         u16 latency, u16 to_multiplier);
 997 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
 998                                                         __u8 ltk[16]);
 999 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]);
1000 void hci_le_ltk_neg_reply(struct hci_conn *conn);
1001
1002 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1003 int hci_cancel_inquiry(struct hci_dev *hdev);
1004
1005 #endif /* __HCI_CORE_H */