Pileus Git - ~andy/linux/blob - 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 <net/bluetooth/hci.h>
  29
  30 /* HCI priority */
  31 #define HCI_PRIO_MAX    7
  32
  33 /* HCI Core structures */
  34 struct inquiry_data {
  35         bdaddr_t        bdaddr;
  36         __u8            pscan_rep_mode;
  37         __u8            pscan_period_mode;
  38         __u8            pscan_mode;
  39         __u8            dev_class[3];
  40         __le16          clock_offset;
  41         __s8            rssi;
  42         __u8            ssp_mode;
  43 };
  44
  45 struct inquiry_entry {
  46         struct list_head        all;            /* inq_cache.all */
  47         struct list_head        list;           /* unknown or resolve */
  48         enum {
  49                 NAME_NOT_KNOWN,
  50                 NAME_NEEDED,
  51                 NAME_PENDING,
  52                 NAME_KNOWN,
  53         } name_state;
  54         __u32                   timestamp;
  55         struct inquiry_data     data;
  56 };
  57
  58 struct discovery_state {
  59         int                     type;
  60         enum {
  61                 DISCOVERY_STOPPED,
  62                 DISCOVERY_STARTING,
  63                 DISCOVERY_FINDING,
  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 smp_ltk {
  92         struct list_head list;
  93         bdaddr_t bdaddr;
  94         u8 bdaddr_type;
  95         u8 authenticated;
  96         u8 type;
  97         u8 enc_size;
  98         __le16 ediv;
  99         u8 rand[8];
 100         u8 val[16];
 101 } __packed;
 102
 103 struct link_key {
 104         struct list_head list;
 105         bdaddr_t bdaddr;
 106         u8 type;
 107         u8 val[HCI_LINK_KEY_SIZE];
 108         u8 pin_len;
 109 };
 110
 111 struct oob_data {
 112         struct list_head list;
 113         bdaddr_t bdaddr;
 114         u8 hash[16];
 115         u8 randomizer[16];
 116 };
 117
 118 struct le_scan_params {
 119         u8 type;
 120         u16 interval;
 121         u16 window;
 122         int timeout;
 123 };
 124
 125 #define HCI_MAX_SHORT_NAME_LENGTH       10
 126
 127 #define NUM_REASSEMBLY 4
 128 struct hci_dev {
 129         struct list_head list;
 130         struct mutex    lock;
 131
 132         char            name[8];
 133         unsigned long   flags;
 134         __u16           id;
 135         __u8            bus;
 136         __u8            dev_type;
 137         bdaddr_t        bdaddr;
 138         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 139         __u8            short_name[HCI_MAX_SHORT_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            hci_ver;
 148         __u16           hci_rev;
 149         __u8            lmp_ver;
 150         __u16           manufacturer;
 151         __u16           lmp_subver;
 152         __u16           voice_setting;
 153         __u8            io_capability;
 154         __s8            inq_tx_power;
 155         __u16           devid_source;
 156         __u16           devid_vendor;
 157         __u16           devid_product;
 158         __u16           devid_version;
 159
 160         __u16           pkt_type;
 161         __u16           esco_type;
 162         __u16           link_policy;
 163         __u16           link_mode;
 164
 165         __u32           idle_timeout;
 166         __u16           sniff_min_interval;
 167         __u16           sniff_max_interval;
 168
 169         __u8            amp_status;
 170         __u32           amp_total_bw;
 171         __u32           amp_max_bw;
 172         __u32           amp_min_latency;
 173         __u32           amp_max_pdu;
 174         __u8            amp_type;
 175         __u16           amp_pal_cap;
 176         __u16           amp_assoc_size;
 177         __u32           amp_max_flush_to;
 178         __u32           amp_be_flush_to;
 179
 180         __u8            flow_ctl_mode;
 181
 182         unsigned int    auto_accept_delay;
 183
 184         unsigned long   quirks;
 185
 186         atomic_t        cmd_cnt;
 187         unsigned int    acl_cnt;
 188         unsigned int    sco_cnt;
 189         unsigned int    le_cnt;
 190
 191         unsigned int    acl_mtu;
 192         unsigned int    sco_mtu;
 193         unsigned int    le_mtu;
 194         unsigned int    acl_pkts;
 195         unsigned int    sco_pkts;
 196         unsigned int    le_pkts;
 197
 198         __u16           block_len;
 199         __u16           block_mtu;
 200         __u16           num_blocks;
 201         __u16           block_cnt;
 202
 203         unsigned long   acl_last_tx;
 204         unsigned long   sco_last_tx;
 205         unsigned long   le_last_tx;
 206
 207         struct workqueue_struct *workqueue;
 208
 209         struct work_struct      power_on;
 210         struct delayed_work     power_off;
 211
 212         __u16                   discov_timeout;
 213         struct delayed_work     discov_off;
 214
 215         struct delayed_work     service_cache;
 216
 217         struct timer_list       cmd_timer;
 218
 219         struct work_struct      rx_work;
 220         struct work_struct      cmd_work;
 221         struct work_struct      tx_work;
 222
 223         struct sk_buff_head     rx_q;
 224         struct sk_buff_head     raw_q;
 225         struct sk_buff_head     cmd_q;
 226
 227         struct sk_buff          *sent_cmd;
 228         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 229
 230         struct mutex            req_lock;
 231         wait_queue_head_t       req_wait_q;
 232         __u32                   req_status;
 233         __u32                   req_result;
 234
 235         __u16                   init_last_cmd;
 236
 237         struct list_head        mgmt_pending;
 238
 239         struct discovery_state  discovery;
 240         struct hci_conn_hash    conn_hash;
 241         struct list_head        blacklist;
 242
 243         struct list_head        uuids;
 244
 245         struct list_head        link_keys;
 246
 247         struct list_head        long_term_keys;
 248
 249         struct list_head        remote_oob_data;
 250
 251         struct hci_dev_stats    stat;
 252
 253         struct sk_buff_head     driver_init;
 254
 255         void                    *core_data;
 256
 257         atomic_t                promisc;
 258
 259         struct dentry           *debugfs;
 260
 261         struct device           dev;
 262
 263         struct rfkill           *rfkill;
 264
 265         unsigned long           dev_flags;
 266
 267         struct delayed_work     le_scan_disable;
 268
 269         struct work_struct      le_scan;
 270         struct le_scan_params   le_scan_params;
 271
 272         int (*open)(struct hci_dev *hdev);
 273         int (*close)(struct hci_dev *hdev);
 274         int (*flush)(struct hci_dev *hdev);
 275         int (*send)(struct sk_buff *skb);
 276         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 277         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 278 };
 279
 280 struct hci_conn {
 281         struct list_head list;
 282
 283         atomic_t        refcnt;
 284
 285         bdaddr_t        dst;
 286         __u8            dst_type;
 287         __u16           handle;
 288         __u16           state;
 289         __u8            mode;
 290         __u8            type;
 291         bool            out;
 292         __u8            attempt;
 293         __u8            dev_class[3];
 294         __u8            features[8];
 295         __u16           interval;
 296         __u16           pkt_type;
 297         __u16           link_policy;
 298         __u32           link_mode;
 299         __u8            key_type;
 300         __u8            auth_type;
 301         __u8            sec_level;
 302         __u8            pending_sec_level;
 303         __u8            pin_length;
 304         __u8            enc_key_size;
 305         __u8            io_capability;
 306         __u32           passkey_notify;
 307         __u8            passkey_entered;
 308         __u16           disc_timeout;
 309         unsigned long   flags;
 310
 311         __u8            remote_cap;
 312         __u8            remote_auth;
 313         bool            flush_key;
 314
 315         unsigned int    sent;
 316
 317         struct sk_buff_head data_q;
 318         struct list_head chan_list;
 319
 320         struct delayed_work disc_work;
 321         struct timer_list idle_timer;
 322         struct timer_list auto_accept_timer;
 323
 324         struct device   dev;
 325         atomic_t        devref;
 326
 327         struct hci_dev  *hdev;
 328         void            *l2cap_data;
 329         void            *sco_data;
 330         void            *smp_conn;
 331         struct amp_mgr  *amp_mgr;
 332
 333         struct hci_conn *link;
 334
 335         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 336         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 337         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 338 };
 339
 340 struct hci_chan {
 341         struct list_head list;
 342
 343         struct hci_conn *conn;
 344         struct sk_buff_head data_q;
 345         unsigned int    sent;
 346 };
 347
 348 extern struct list_head hci_dev_list;
 349 extern struct list_head hci_cb_list;
 350 extern rwlock_t hci_dev_list_lock;
 351 extern rwlock_t hci_cb_list_lock;
 352
 353 /* ----- HCI interface to upper protocols ----- */
 354 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 355 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 356 extern int l2cap_disconn_ind(struct hci_conn *hcon);
 357 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 358 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 359 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
 360                               u16 flags);
 361
 362 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 363 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 364 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 365 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 366
 367 /* ----- Inquiry cache ----- */
 368 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 369 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 370
 371 static inline void discovery_init(struct hci_dev *hdev)
 372 {
 373         hdev->discovery.state = DISCOVERY_STOPPED;
 374         INIT_LIST_HEAD(&hdev->discovery.all);
 375         INIT_LIST_HEAD(&hdev->discovery.unknown);
 376         INIT_LIST_HEAD(&hdev->discovery.resolve);
 377 }
 378
 379 bool hci_discovery_active(struct hci_dev *hdev);
 380
 381 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 382
 383 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 384 {
 385         return list_empty(&hdev->discovery.all);
 386 }
 387
 388 static inline long inquiry_cache_age(struct hci_dev *hdev)
 389 {
 390         struct discovery_state *c = &hdev->discovery;
 391         return jiffies - c->timestamp;
 392 }
 393
 394 static inline long inquiry_entry_age(struct inquiry_entry *e)
 395 {
 396         return jiffies - e->timestamp;
 397 }
 398
 399 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 400                                                bdaddr_t *bdaddr);
 401 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 402                                                        bdaddr_t *bdaddr);
 403 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 404                                                        bdaddr_t *bdaddr,
 405                                                        int state);
 406 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 407                                       struct inquiry_entry *ie);
 408 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 409                               bool name_known, bool *ssp);
 410
 411 /* ----- HCI Connections ----- */
 412 enum {
 413         HCI_CONN_AUTH_PEND,
 414         HCI_CONN_REAUTH_PEND,
 415         HCI_CONN_ENCRYPT_PEND,
 416         HCI_CONN_RSWITCH_PEND,
 417         HCI_CONN_MODE_CHANGE_PEND,
 418         HCI_CONN_SCO_SETUP_PEND,
 419         HCI_CONN_LE_SMP_PEND,
 420         HCI_CONN_MGMT_CONNECTED,
 421         HCI_CONN_SSP_ENABLED,
 422         HCI_CONN_POWER_SAVE,
 423         HCI_CONN_REMOTE_OOB,
 424 };
 425
 426 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 427 {
 428         struct hci_dev *hdev = conn->hdev;
 429         return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 430                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 431 }
 432
 433 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 434 {
 435         struct hci_conn_hash *h = &hdev->conn_hash;
 436         list_add_rcu(&c->list, &h->list);
 437         switch (c->type) {
 438         case ACL_LINK:
 439                 h->acl_num++;
 440                 break;
 441         case LE_LINK:
 442                 h->le_num++;
 443                 break;
 444         case SCO_LINK:
 445         case ESCO_LINK:
 446                 h->sco_num++;
 447                 break;
 448         }
 449 }
 450
 451 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 452 {
 453         struct hci_conn_hash *h = &hdev->conn_hash;
 454
 455         list_del_rcu(&c->list);
 456         synchronize_rcu();
 457
 458         switch (c->type) {
 459         case ACL_LINK:
 460                 h->acl_num--;
 461                 break;
 462         case LE_LINK:
 463                 h->le_num--;
 464                 break;
 465         case SCO_LINK:
 466         case ESCO_LINK:
 467                 h->sco_num--;
 468                 break;
 469         }
 470 }
 471
 472 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 473 {
 474         struct hci_conn_hash *h = &hdev->conn_hash;
 475         switch (type) {
 476         case ACL_LINK:
 477                 return h->acl_num;
 478         case LE_LINK:
 479                 return h->le_num;
 480         case SCO_LINK:
 481         case ESCO_LINK:
 482                 return h->sco_num;
 483         default:
 484                 return 0;
 485         }
 486 }
 487
 488 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 489                                                                 __u16 handle)
 490 {
 491         struct hci_conn_hash *h = &hdev->conn_hash;
 492         struct hci_conn  *c;
 493
 494         rcu_read_lock();
 495
 496         list_for_each_entry_rcu(c, &h->list, list) {
 497                 if (c->handle == handle) {
 498                         rcu_read_unlock();
 499                         return c;
 500                 }
 501         }
 502         rcu_read_unlock();
 503
 504         return NULL;
 505 }
 506
 507 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 508                                                         __u8 type, bdaddr_t *ba)
 509 {
 510         struct hci_conn_hash *h = &hdev->conn_hash;
 511         struct hci_conn  *c;
 512
 513         rcu_read_lock();
 514
 515         list_for_each_entry_rcu(c, &h->list, list) {
 516                 if (c->type == type && !bacmp(&c->dst, ba)) {
 517                         rcu_read_unlock();
 518                         return c;
 519                 }
 520         }
 521
 522         rcu_read_unlock();
 523
 524         return NULL;
 525 }
 526
 527 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 528                                                         __u8 type, __u16 state)
 529 {
 530         struct hci_conn_hash *h = &hdev->conn_hash;
 531         struct hci_conn  *c;
 532
 533         rcu_read_lock();
 534
 535         list_for_each_entry_rcu(c, &h->list, list) {
 536                 if (c->type == type && c->state == state) {
 537                         rcu_read_unlock();
 538                         return c;
 539                 }
 540         }
 541
 542         rcu_read_unlock();
 543
 544         return NULL;
 545 }
 546
 547 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 548 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 549 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 550
 551 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 552 int hci_conn_del(struct hci_conn *conn);
 553 void hci_conn_hash_flush(struct hci_dev *hdev);
 554 void hci_conn_check_pending(struct hci_dev *hdev);
 555
 556 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 557 void hci_chan_del(struct hci_chan *chan);
 558 void hci_chan_list_flush(struct hci_conn *conn);
 559
 560 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 561                              __u8 dst_type, __u8 sec_level, __u8 auth_type);
 562 int hci_conn_check_link_mode(struct hci_conn *conn);
 563 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 564 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 565 int hci_conn_change_link_key(struct hci_conn *conn);
 566 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 567
 568 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 569
 570 void hci_conn_hold_device(struct hci_conn *conn);
 571 void hci_conn_put_device(struct hci_conn *conn);
 572
 573 static inline void hci_conn_hold(struct hci_conn *conn)
 574 {
 575         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 576
 577         atomic_inc(&conn->refcnt);
 578         cancel_delayed_work(&conn->disc_work);
 579 }
 580
 581 static inline void hci_conn_put(struct hci_conn *conn)
 582 {
 583         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 584
 585         if (atomic_dec_and_test(&conn->refcnt)) {
 586                 unsigned long timeo;
 587                 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
 588                         del_timer(&conn->idle_timer);
 589                         if (conn->state == BT_CONNECTED) {
 590                                 timeo = conn->disc_timeout;
 591                                 if (!conn->out)
 592                                         timeo *= 2;
 593                         } else {
 594                                 timeo = msecs_to_jiffies(10);
 595                         }
 596                 } else {
 597                         timeo = msecs_to_jiffies(10);
 598                 }
 599                 cancel_delayed_work(&conn->disc_work);
 600                 queue_delayed_work(conn->hdev->workqueue,
 601                                         &conn->disc_work, timeo);
 602         }
 603 }
 604
 605 /* ----- HCI Devices ----- */
 606 static inline void hci_dev_put(struct hci_dev *d)
 607 {
 608         BT_DBG("%s orig refcnt %d", d->name,
 609                atomic_read(&d->dev.kobj.kref.refcount));
 610
 611         put_device(&d->dev);
 612 }
 613
 614 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 615 {
 616         BT_DBG("%s orig refcnt %d", d->name,
 617                atomic_read(&d->dev.kobj.kref.refcount));
 618
 619         get_device(&d->dev);
 620         return d;
 621 }
 622
 623 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 624 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 625
 626 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 627 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 628
 629 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 630 {
 631         return dev_get_drvdata(&hdev->dev);
 632 }
 633
 634 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 635 {
 636         dev_set_drvdata(&hdev->dev, data);
 637 }
 638
 639 /* hci_dev_list shall be locked */
 640 static inline uint8_t __hci_num_ctrl(void)
 641 {
 642         uint8_t count = 0;
 643         struct list_head *p;
 644
 645         list_for_each(p, &hci_dev_list) {
 646                 count++;
 647         }
 648
 649         return count;
 650 }
 651
 652 struct hci_dev *hci_dev_get(int index);
 653 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 654
 655 struct hci_dev *hci_alloc_dev(void);
 656 void hci_free_dev(struct hci_dev *hdev);
 657 int hci_register_dev(struct hci_dev *hdev);
 658 void hci_unregister_dev(struct hci_dev *hdev);
 659 int hci_suspend_dev(struct hci_dev *hdev);
 660 int hci_resume_dev(struct hci_dev *hdev);
 661 int hci_dev_open(__u16 dev);
 662 int hci_dev_close(__u16 dev);
 663 int hci_dev_reset(__u16 dev);
 664 int hci_dev_reset_stat(__u16 dev);
 665 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 666 int hci_get_dev_list(void __user *arg);
 667 int hci_get_dev_info(void __user *arg);
 668 int hci_get_conn_list(void __user *arg);
 669 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 670 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 671 int hci_inquiry(void __user *arg);
 672
 673 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
 674                                          bdaddr_t *bdaddr);
 675 int hci_blacklist_clear(struct hci_dev *hdev);
 676 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 677 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 678
 679 int hci_uuids_clear(struct hci_dev *hdev);
 680
 681 int hci_link_keys_clear(struct hci_dev *hdev);
 682 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 683 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 684                      bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 685 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 686 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
 687                 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
 688                 __le16 ediv, u8 rand[8]);
 689 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 690                                      u8 addr_type);
 691 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
 692 int hci_smp_ltks_clear(struct hci_dev *hdev);
 693 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 694
 695 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 696 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 697                                                         bdaddr_t *bdaddr);
 698 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 699                                                                 u8 *randomizer);
 700 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 701
 702 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 703
 704 int hci_recv_frame(struct sk_buff *skb);
 705 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 706 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 707
 708 void hci_init_sysfs(struct hci_dev *hdev);
 709 int hci_add_sysfs(struct hci_dev *hdev);
 710 void hci_del_sysfs(struct hci_dev *hdev);
 711 void hci_conn_init_sysfs(struct hci_conn *conn);
 712 void hci_conn_add_sysfs(struct hci_conn *conn);
 713 void hci_conn_del_sysfs(struct hci_conn *conn);
 714
 715 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
 716
 717 /* ----- LMP capabilities ----- */
 718 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 719 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 720 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 721 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 722 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 723 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 724 #define lmp_no_flush_capable(dev)  ((dev)->features[6] & LMP_NO_FLUSH)
 725 #define lmp_le_capable(dev)        ((dev)->features[4] & LMP_LE)
 726 #define lmp_bredr_capable(dev)     (!((dev)->features[4] & LMP_NO_BREDR))
 727
 728 /* ----- Extended LMP capabilities ----- */
 729 #define lmp_host_le_capable(dev)   ((dev)->host_features[0] & LMP_HOST_LE)
 730
 731 /* ----- HCI protocols ----- */
 732 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 733                                                                 __u8 type)
 734 {
 735         switch (type) {
 736         case ACL_LINK:
 737                 return l2cap_connect_ind(hdev, bdaddr);
 738
 739         case SCO_LINK:
 740         case ESCO_LINK:
 741                 return sco_connect_ind(hdev, bdaddr);
 742
 743         default:
 744                 BT_ERR("unknown link type %d", type);
 745                 return -EINVAL;
 746         }
 747 }
 748
 749 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 750 {
 751         switch (conn->type) {
 752         case ACL_LINK:
 753         case LE_LINK:
 754                 l2cap_connect_cfm(conn, status);
 755                 break;
 756
 757         case SCO_LINK:
 758         case ESCO_LINK:
 759                 sco_connect_cfm(conn, status);
 760                 break;
 761
 762         default:
 763                 BT_ERR("unknown link type %d", conn->type);
 764                 break;
 765         }
 766
 767         if (conn->connect_cfm_cb)
 768                 conn->connect_cfm_cb(conn, status);
 769 }
 770
 771 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 772 {
 773         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 774                 return HCI_ERROR_REMOTE_USER_TERM;
 775
 776         return l2cap_disconn_ind(conn);
 777 }
 778
 779 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 780 {
 781         switch (conn->type) {
 782         case ACL_LINK:
 783         case LE_LINK:
 784                 l2cap_disconn_cfm(conn, reason);
 785                 break;
 786
 787         case SCO_LINK:
 788         case ESCO_LINK:
 789                 sco_disconn_cfm(conn, reason);
 790                 break;
 791
 792         default:
 793                 BT_ERR("unknown link type %d", conn->type);
 794                 break;
 795         }
 796
 797         if (conn->disconn_cfm_cb)
 798                 conn->disconn_cfm_cb(conn, reason);
 799 }
 800
 801 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 802 {
 803         __u8 encrypt;
 804
 805         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 806                 return;
 807
 808         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 809                 return;
 810
 811         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 812         l2cap_security_cfm(conn, status, encrypt);
 813
 814         if (conn->security_cfm_cb)
 815                 conn->security_cfm_cb(conn, status);
 816 }
 817
 818 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 819                                                                 __u8 encrypt)
 820 {
 821         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 822                 return;
 823
 824         l2cap_security_cfm(conn, status, encrypt);
 825
 826         if (conn->security_cfm_cb)
 827                 conn->security_cfm_cb(conn, status);
 828 }
 829
 830 /* ----- HCI callbacks ----- */
 831 struct hci_cb {
 832         struct list_head list;
 833
 834         char *name;
 835
 836         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 837                                                                 __u8 encrypt);
 838         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 839         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 840 };
 841
 842 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 843 {
 844         struct list_head *p;
 845         __u8 encrypt;
 846
 847         hci_proto_auth_cfm(conn, status);
 848
 849         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 850                 return;
 851
 852         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 853
 854         read_lock(&hci_cb_list_lock);
 855         list_for_each(p, &hci_cb_list) {
 856                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 857                 if (cb->security_cfm)
 858                         cb->security_cfm(conn, status, encrypt);
 859         }
 860         read_unlock(&hci_cb_list_lock);
 861 }
 862
 863 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 864                                                                 __u8 encrypt)
 865 {
 866         struct list_head *p;
 867
 868         if (conn->sec_level == BT_SECURITY_SDP)
 869                 conn->sec_level = BT_SECURITY_LOW;
 870
 871         if (conn->pending_sec_level > conn->sec_level)
 872                 conn->sec_level = conn->pending_sec_level;
 873
 874         hci_proto_encrypt_cfm(conn, status, encrypt);
 875
 876         read_lock(&hci_cb_list_lock);
 877         list_for_each(p, &hci_cb_list) {
 878                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 879                 if (cb->security_cfm)
 880                         cb->security_cfm(conn, status, encrypt);
 881         }
 882         read_unlock(&hci_cb_list_lock);
 883 }
 884
 885 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 886 {
 887         struct list_head *p;
 888
 889         read_lock(&hci_cb_list_lock);
 890         list_for_each(p, &hci_cb_list) {
 891                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 892                 if (cb->key_change_cfm)
 893                         cb->key_change_cfm(conn, status);
 894         }
 895         read_unlock(&hci_cb_list_lock);
 896 }
 897
 898 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 899                                                                 __u8 role)
 900 {
 901         struct list_head *p;
 902
 903         read_lock(&hci_cb_list_lock);
 904         list_for_each(p, &hci_cb_list) {
 905                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 906                 if (cb->role_switch_cfm)
 907                         cb->role_switch_cfm(conn, status, role);
 908         }
 909         read_unlock(&hci_cb_list_lock);
 910 }
 911
 912 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
 913 {
 914         size_t parsed = 0;
 915
 916         if (data_len < 2)
 917                 return false;
 918
 919         while (parsed < data_len - 1) {
 920                 u8 field_len = data[0];
 921
 922                 if (field_len == 0)
 923                         break;
 924
 925                 parsed += field_len + 1;
 926
 927                 if (parsed > data_len)
 928                         break;
 929
 930                 if (data[1] == type)
 931                         return true;
 932
 933                 data += field_len + 1;
 934         }
 935
 936         return false;
 937 }
 938
 939 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
 940 {
 941         size_t parsed = 0;
 942
 943         while (parsed < eir_len) {
 944                 u8 field_len = eir[0];
 945
 946                 if (field_len == 0)
 947                         return parsed;
 948
 949                 parsed += field_len + 1;
 950                 eir += field_len + 1;
 951         }
 952
 953         return eir_len;
 954 }
 955
 956 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
 957                                   u8 data_len)
 958 {
 959         eir[eir_len++] = sizeof(type) + data_len;
 960         eir[eir_len++] = type;
 961         memcpy(&eir[eir_len], data, data_len);
 962         eir_len += data_len;
 963
 964         return eir_len;
 965 }
 966
 967 int hci_register_cb(struct hci_cb *hcb);
 968 int hci_unregister_cb(struct hci_cb *hcb);
 969
 970 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 971 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
 972 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 973
 974 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 975
 976 /* ----- HCI Sockets ----- */
 977 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
 978 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
 979 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
 980
 981 void hci_sock_dev_event(struct hci_dev *hdev, int event);
 982
 983 /* Management interface */
 984 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
 985 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
 986                                          BIT(BDADDR_LE_RANDOM))
 987 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
 988                                          BIT(BDADDR_LE_PUBLIC) | \
 989                                          BIT(BDADDR_LE_RANDOM))
 990
 991 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
 992 int mgmt_index_added(struct hci_dev *hdev);
 993 int mgmt_index_removed(struct hci_dev *hdev);
 994 int mgmt_powered(struct hci_dev *hdev, u8 powered);
 995 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
 996 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
 997 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
 998 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
 999                       bool persistent);
1000 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1001                           u8 addr_type, u32 flags, u8 *name, u8 name_len,
1002                           u8 *dev_class);
1003 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1004                              u8 link_type, u8 addr_type, u8 reason);
1005 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1006                            u8 link_type, u8 addr_type, u8 status);
1007 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1008                         u8 addr_type, u8 status);
1009 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1010 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1011                                  u8 status);
1012 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1013                                      u8 status);
1014 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1015                               u8 link_type, u8 addr_type, __le32 value,
1016                               u8 confirm_hint);
1017 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1018                                      u8 link_type, u8 addr_type, u8 status);
1019 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1020                                          u8 link_type, u8 addr_type, u8 status);
1021 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1022                               u8 link_type, u8 addr_type);
1023 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1024                                      u8 link_type, u8 addr_type, u8 status);
1025 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1026                                          u8 link_type, u8 addr_type, u8 status);
1027 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1028                              u8 link_type, u8 addr_type, u32 passkey,
1029                              u8 entered);
1030 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1031                      u8 addr_type, u8 status);
1032 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1033 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1034 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1035                                    u8 status);
1036 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1037 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1038                                             u8 *randomizer, u8 status);
1039 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1040 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1041                       u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1042                       u8 ssp, u8 *eir, u16 eir_len);
1043 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1044                      u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1045 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
1046 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
1047 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1048 int mgmt_interleaved_discovery(struct hci_dev *hdev);
1049 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1050 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1051 bool mgmt_valid_hdev(struct hci_dev *hdev);
1052 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1053
1054 /* HCI info for socket */
1055 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1056
1057 struct hci_pinfo {
1058         struct bt_sock    bt;
1059         struct hci_dev    *hdev;
1060         struct hci_filter filter;
1061         __u32             cmsg_mask;
1062         unsigned short   channel;
1063 };
1064
1065 /* HCI security filter */
1066 #define HCI_SFLT_MAX_OGF  5
1067
1068 struct hci_sec_filter {
1069         __u32 type_mask;
1070         __u32 event_mask[2];
1071         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1072 };
1073
1074 /* ----- HCI requests ----- */
1075 #define HCI_REQ_DONE      0
1076 #define HCI_REQ_PEND      1
1077 #define HCI_REQ_CANCELED  2
1078
1079 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
1080 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
1081
1082 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
1083
1084 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1085                                         u16 latency, u16 to_multiplier);
1086 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1087                                                         __u8 ltk[16]);
1088 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1089 int hci_cancel_inquiry(struct hci_dev *hdev);
1090 int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
1091                 int timeout);
1092 int hci_cancel_le_scan(struct hci_dev *hdev);
1093
1094 u8 bdaddr_to_le(u8 bdaddr_type);
1095
1096 #endif /* __HCI_CORE_H */