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 <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         int                     type;
  61         enum {
  62                 DISCOVERY_STOPPED,
  63                 DISCOVERY_STARTING,
  64                 DISCOVERY_FINDING,
  65                 DISCOVERY_RESOLVING,
  66                 DISCOVERY_STOPPING,
  67         } state;
  68         struct list_head        all;            /* All devices found during inquiry */
  69         struct list_head        unknown;        /* Name state not known */
  70         struct list_head        resolve;        /* Name needs to be resolved */
  71         __u32                   timestamp;
  72 };
  73
  74 struct hci_conn_hash {
  75         struct list_head list;
  76         unsigned int     acl_num;
  77         unsigned int     sco_num;
  78         unsigned int     le_num;
  79 };
  80
  81 struct bdaddr_list {
  82         struct list_head list;
  83         bdaddr_t bdaddr;
  84 };
  85
  86 struct bt_uuid {
  87         struct list_head list;
  88         u8 uuid[16];
  89         u8 svc_hint;
  90 };
  91
  92 struct smp_ltk {
  93         struct list_head list;
  94         bdaddr_t bdaddr;
  95         u8 bdaddr_type;
  96         u8 authenticated;
  97         u8 type;
  98         u8 enc_size;
  99         __le16 ediv;
 100         u8 rand[8];
 101         u8 val[16];
 102 } __packed;
 103
 104 struct link_key {
 105         struct list_head list;
 106         bdaddr_t bdaddr;
 107         u8 type;
 108         u8 val[16];
 109         u8 pin_len;
 110 };
 111
 112 struct oob_data {
 113         struct list_head list;
 114         bdaddr_t bdaddr;
 115         u8 hash[16];
 116         u8 randomizer[16];
 117 };
 118
 119 struct adv_entry {
 120         struct list_head list;
 121         bdaddr_t bdaddr;
 122         u8 bdaddr_type;
 123 };
 124
 125 struct le_scan_params {
 126         u8 type;
 127         u16 interval;
 128         u16 window;
 129         int timeout;
 130 };
 131
 132 #define HCI_MAX_SHORT_NAME_LENGTH       10
 133
 134 #define NUM_REASSEMBLY 4
 135 struct hci_dev {
 136         struct list_head list;
 137         struct mutex    lock;
 138
 139         char            name[8];
 140         unsigned long   flags;
 141         __u16           id;
 142         __u8            bus;
 143         __u8            dev_type;
 144         bdaddr_t        bdaddr;
 145         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 146         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 147         __u8            eir[HCI_MAX_EIR_LENGTH];
 148         __u8            dev_class[3];
 149         __u8            major_class;
 150         __u8            minor_class;
 151         __u8            features[8];
 152         __u8            host_features[8];
 153         __u8            commands[64];
 154         __u8            hci_ver;
 155         __u16           hci_rev;
 156         __u8            lmp_ver;
 157         __u16           manufacturer;
 158         __u16           lmp_subver;
 159         __u16           voice_setting;
 160         __u8            io_capability;
 161         __s8            inq_tx_power;
 162         __u16           devid_source;
 163         __u16           devid_vendor;
 164         __u16           devid_product;
 165         __u16           devid_version;
 166
 167         __u16           pkt_type;
 168         __u16           esco_type;
 169         __u16           link_policy;
 170         __u16           link_mode;
 171
 172         __u32           idle_timeout;
 173         __u16           sniff_min_interval;
 174         __u16           sniff_max_interval;
 175
 176         __u8            amp_status;
 177         __u32           amp_total_bw;
 178         __u32           amp_max_bw;
 179         __u32           amp_min_latency;
 180         __u32           amp_max_pdu;
 181         __u8            amp_type;
 182         __u16           amp_pal_cap;
 183         __u16           amp_assoc_size;
 184         __u32           amp_max_flush_to;
 185         __u32           amp_be_flush_to;
 186
 187         __u8            flow_ctl_mode;
 188
 189         unsigned int    auto_accept_delay;
 190
 191         unsigned long   quirks;
 192
 193         atomic_t        cmd_cnt;
 194         unsigned int    acl_cnt;
 195         unsigned int    sco_cnt;
 196         unsigned int    le_cnt;
 197
 198         unsigned int    acl_mtu;
 199         unsigned int    sco_mtu;
 200         unsigned int    le_mtu;
 201         unsigned int    acl_pkts;
 202         unsigned int    sco_pkts;
 203         unsigned int    le_pkts;
 204
 205         __u16           block_len;
 206         __u16           block_mtu;
 207         __u16           num_blocks;
 208         __u16           block_cnt;
 209
 210         unsigned long   acl_last_tx;
 211         unsigned long   sco_last_tx;
 212         unsigned long   le_last_tx;
 213
 214         struct workqueue_struct *workqueue;
 215
 216         struct work_struct      power_on;
 217         struct delayed_work     power_off;
 218
 219         __u16                   discov_timeout;
 220         struct delayed_work     discov_off;
 221
 222         struct delayed_work     service_cache;
 223
 224         struct timer_list       cmd_timer;
 225
 226         struct work_struct      rx_work;
 227         struct work_struct      cmd_work;
 228         struct work_struct      tx_work;
 229
 230         struct sk_buff_head     rx_q;
 231         struct sk_buff_head     raw_q;
 232         struct sk_buff_head     cmd_q;
 233
 234         struct sk_buff          *sent_cmd;
 235         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 236
 237         struct mutex            req_lock;
 238         wait_queue_head_t       req_wait_q;
 239         __u32                   req_status;
 240         __u32                   req_result;
 241
 242         __u16                   init_last_cmd;
 243
 244         struct list_head        mgmt_pending;
 245
 246         struct discovery_state  discovery;
 247         struct hci_conn_hash    conn_hash;
 248         struct list_head        blacklist;
 249
 250         struct list_head        uuids;
 251
 252         struct list_head        link_keys;
 253
 254         struct list_head        long_term_keys;
 255
 256         struct list_head        remote_oob_data;
 257
 258         struct list_head        adv_entries;
 259         struct delayed_work     adv_work;
 260
 261         struct hci_dev_stats    stat;
 262
 263         struct sk_buff_head     driver_init;
 264
 265         void                    *core_data;
 266
 267         atomic_t                promisc;
 268
 269         struct dentry           *debugfs;
 270
 271         struct device           dev;
 272
 273         struct rfkill           *rfkill;
 274
 275         unsigned long           dev_flags;
 276
 277         struct delayed_work     le_scan_disable;
 278
 279         struct work_struct      le_scan;
 280         struct le_scan_params   le_scan_params;
 281
 282         int (*open)(struct hci_dev *hdev);
 283         int (*close)(struct hci_dev *hdev);
 284         int (*flush)(struct hci_dev *hdev);
 285         int (*send)(struct sk_buff *skb);
 286         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 287         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 288 };
 289
 290 struct hci_conn {
 291         struct list_head list;
 292
 293         atomic_t        refcnt;
 294
 295         bdaddr_t        dst;
 296         __u8            dst_type;
 297         __u16           handle;
 298         __u16           state;
 299         __u8            mode;
 300         __u8            type;
 301         bool            out;
 302         __u8            attempt;
 303         __u8            dev_class[3];
 304         __u8            features[8];
 305         __u16           interval;
 306         __u16           pkt_type;
 307         __u16           link_policy;
 308         __u32           link_mode;
 309         __u8            key_type;
 310         __u8            auth_type;
 311         __u8            sec_level;
 312         __u8            pending_sec_level;
 313         __u8            pin_length;
 314         __u8            enc_key_size;
 315         __u8            io_capability;
 316         __u16           disc_timeout;
 317         unsigned long   flags;
 318
 319         __u8            remote_cap;
 320         __u8            remote_auth;
 321         bool            flush_key;
 322
 323         unsigned int    sent;
 324
 325         struct sk_buff_head data_q;
 326         struct list_head chan_list;
 327
 328         struct delayed_work disc_work;
 329         struct timer_list idle_timer;
 330         struct timer_list auto_accept_timer;
 331
 332         struct device   dev;
 333         atomic_t        devref;
 334
 335         struct hci_dev  *hdev;
 336         void            *l2cap_data;
 337         void            *sco_data;
 338         void            *smp_conn;
 339
 340         struct hci_conn *link;
 341
 342         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 343         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 344         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 345 };
 346
 347 struct hci_chan {
 348         struct list_head list;
 349
 350         struct hci_conn *conn;
 351         struct sk_buff_head data_q;
 352         unsigned int    sent;
 353 };
 354
 355 extern struct list_head hci_dev_list;
 356 extern struct list_head hci_cb_list;
 357 extern rwlock_t hci_dev_list_lock;
 358 extern rwlock_t hci_cb_list_lock;
 359
 360 /* ----- HCI interface to upper protocols ----- */
 361 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 362 extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 363 extern int l2cap_disconn_ind(struct hci_conn *hcon);
 364 extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 365 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 366 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 367
 368 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 369 extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 370 extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 371 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 372
 373 /* ----- Inquiry cache ----- */
 374 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 375 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 376
 377 static inline void discovery_init(struct hci_dev *hdev)
 378 {
 379         hdev->discovery.state = DISCOVERY_STOPPED;
 380         INIT_LIST_HEAD(&hdev->discovery.all);
 381         INIT_LIST_HEAD(&hdev->discovery.unknown);
 382         INIT_LIST_HEAD(&hdev->discovery.resolve);
 383 }
 384
 385 bool hci_discovery_active(struct hci_dev *hdev);
 386
 387 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 388
 389 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 390 {
 391         return list_empty(&hdev->discovery.all);
 392 }
 393
 394 static inline long inquiry_cache_age(struct hci_dev *hdev)
 395 {
 396         struct discovery_state *c = &hdev->discovery;
 397         return jiffies - c->timestamp;
 398 }
 399
 400 static inline long inquiry_entry_age(struct inquiry_entry *e)
 401 {
 402         return jiffies - e->timestamp;
 403 }
 404
 405 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 406                                                bdaddr_t *bdaddr);
 407 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 408                                                        bdaddr_t *bdaddr);
 409 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 410                                                        bdaddr_t *bdaddr,
 411                                                        int state);
 412 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 413                                       struct inquiry_entry *ie);
 414 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 415                               bool name_known, bool *ssp);
 416
 417 /* ----- HCI Connections ----- */
 418 enum {
 419         HCI_CONN_AUTH_PEND,
 420         HCI_CONN_REAUTH_PEND,
 421         HCI_CONN_ENCRYPT_PEND,
 422         HCI_CONN_RSWITCH_PEND,
 423         HCI_CONN_MODE_CHANGE_PEND,
 424         HCI_CONN_SCO_SETUP_PEND,
 425         HCI_CONN_LE_SMP_PEND,
 426         HCI_CONN_MGMT_CONNECTED,
 427         HCI_CONN_SSP_ENABLED,
 428         HCI_CONN_POWER_SAVE,
 429         HCI_CONN_REMOTE_OOB,
 430 };
 431
 432 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 433 {
 434         struct hci_dev *hdev = conn->hdev;
 435         return (test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 436                                 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags));
 437 }
 438
 439 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 440 {
 441         struct hci_conn_hash *h = &hdev->conn_hash;
 442         INIT_LIST_HEAD(&h->list);
 443         h->acl_num = 0;
 444         h->sco_num = 0;
 445         h->le_num = 0;
 446 }
 447
 448 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 449 {
 450         struct hci_conn_hash *h = &hdev->conn_hash;
 451         list_add_rcu(&c->list, &h->list);
 452         switch (c->type) {
 453         case ACL_LINK:
 454                 h->acl_num++;
 455                 break;
 456         case LE_LINK:
 457                 h->le_num++;
 458                 break;
 459         case SCO_LINK:
 460         case ESCO_LINK:
 461                 h->sco_num++;
 462                 break;
 463         }
 464 }
 465
 466 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 467 {
 468         struct hci_conn_hash *h = &hdev->conn_hash;
 469
 470         list_del_rcu(&c->list);
 471         synchronize_rcu();
 472
 473         switch (c->type) {
 474         case ACL_LINK:
 475                 h->acl_num--;
 476                 break;
 477         case LE_LINK:
 478                 h->le_num--;
 479                 break;
 480         case SCO_LINK:
 481         case ESCO_LINK:
 482                 h->sco_num--;
 483                 break;
 484         }
 485 }
 486
 487 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 488 {
 489         struct hci_conn_hash *h = &hdev->conn_hash;
 490         switch (type) {
 491         case ACL_LINK:
 492                 return h->acl_num;
 493         case LE_LINK:
 494                 return h->le_num;
 495         case SCO_LINK:
 496         case ESCO_LINK:
 497                 return h->sco_num;
 498         default:
 499                 return 0;
 500         }
 501 }
 502
 503 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 504                                                                 __u16 handle)
 505 {
 506         struct hci_conn_hash *h = &hdev->conn_hash;
 507         struct hci_conn  *c;
 508
 509         rcu_read_lock();
 510
 511         list_for_each_entry_rcu(c, &h->list, list) {
 512                 if (c->handle == handle) {
 513                         rcu_read_unlock();
 514                         return c;
 515                 }
 516         }
 517         rcu_read_unlock();
 518
 519         return NULL;
 520 }
 521
 522 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 523                                                         __u8 type, bdaddr_t *ba)
 524 {
 525         struct hci_conn_hash *h = &hdev->conn_hash;
 526         struct hci_conn  *c;
 527
 528         rcu_read_lock();
 529
 530         list_for_each_entry_rcu(c, &h->list, list) {
 531                 if (c->type == type && !bacmp(&c->dst, ba)) {
 532                         rcu_read_unlock();
 533                         return c;
 534                 }
 535         }
 536
 537         rcu_read_unlock();
 538
 539         return NULL;
 540 }
 541
 542 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 543                                                         __u8 type, __u16 state)
 544 {
 545         struct hci_conn_hash *h = &hdev->conn_hash;
 546         struct hci_conn  *c;
 547
 548         rcu_read_lock();
 549
 550         list_for_each_entry_rcu(c, &h->list, list) {
 551                 if (c->type == type && c->state == state) {
 552                         rcu_read_unlock();
 553                         return c;
 554                 }
 555         }
 556
 557         rcu_read_unlock();
 558
 559         return NULL;
 560 }
 561
 562 void hci_acl_connect(struct hci_conn *conn);
 563 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 564 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 565 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 566 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 567
 568 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 569 int hci_conn_del(struct hci_conn *conn);
 570 void hci_conn_hash_flush(struct hci_dev *hdev);
 571 void hci_conn_check_pending(struct hci_dev *hdev);
 572
 573 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 574 int hci_chan_del(struct hci_chan *chan);
 575 void hci_chan_list_flush(struct hci_conn *conn);
 576
 577 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 578                                                 __u8 sec_level, __u8 auth_type);
 579 int hci_conn_check_link_mode(struct hci_conn *conn);
 580 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 581 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 582 int hci_conn_change_link_key(struct hci_conn *conn);
 583 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 584
 585 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 586
 587 void hci_conn_hold_device(struct hci_conn *conn);
 588 void hci_conn_put_device(struct hci_conn *conn);
 589
 590 static inline void hci_conn_hold(struct hci_conn *conn)
 591 {
 592         atomic_inc(&conn->refcnt);
 593         cancel_delayed_work(&conn->disc_work);
 594 }
 595
 596 static inline void hci_conn_put(struct hci_conn *conn)
 597 {
 598         if (atomic_dec_and_test(&conn->refcnt)) {
 599                 unsigned long timeo;
 600                 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
 601                         del_timer(&conn->idle_timer);
 602                         if (conn->state == BT_CONNECTED) {
 603                                 timeo = msecs_to_jiffies(conn->disc_timeout);
 604                                 if (!conn->out)
 605                                         timeo *= 2;
 606                         } else {
 607                                 timeo = msecs_to_jiffies(10);
 608                         }
 609                 } else {
 610                         timeo = msecs_to_jiffies(10);
 611                 }
 612                 cancel_delayed_work(&conn->disc_work);
 613                 queue_delayed_work(conn->hdev->workqueue,
 614                                         &conn->disc_work, timeo);
 615         }
 616 }
 617
 618 /* ----- HCI Devices ----- */
 619 static inline void hci_dev_put(struct hci_dev *d)
 620 {
 621         put_device(&d->dev);
 622 }
 623
 624 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 625 {
 626         get_device(&d->dev);
 627         return d;
 628 }
 629
 630 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 631 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 632
 633 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 634 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 635
 636 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 637 {
 638         return dev_get_drvdata(&hdev->dev);
 639 }
 640
 641 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 642 {
 643         dev_set_drvdata(&hdev->dev, data);
 644 }
 645
 646 struct hci_dev *hci_dev_get(int index);
 647 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 648
 649 struct hci_dev *hci_alloc_dev(void);
 650 void hci_free_dev(struct hci_dev *hdev);
 651 int hci_register_dev(struct hci_dev *hdev);
 652 void hci_unregister_dev(struct hci_dev *hdev);
 653 int hci_suspend_dev(struct hci_dev *hdev);
 654 int hci_resume_dev(struct hci_dev *hdev);
 655 int hci_dev_open(__u16 dev);
 656 int hci_dev_close(__u16 dev);
 657 int hci_dev_reset(__u16 dev);
 658 int hci_dev_reset_stat(__u16 dev);
 659 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 660 int hci_get_dev_list(void __user *arg);
 661 int hci_get_dev_info(void __user *arg);
 662 int hci_get_conn_list(void __user *arg);
 663 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 664 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 665 int hci_inquiry(void __user *arg);
 666
 667 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 668 int hci_blacklist_clear(struct hci_dev *hdev);
 669 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 670 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 671
 672 int hci_uuids_clear(struct hci_dev *hdev);
 673
 674 int hci_link_keys_clear(struct hci_dev *hdev);
 675 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 676 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 677                      bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 678 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 679 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
 680                 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
 681                 __le16 ediv, u8 rand[8]);
 682 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 683                                      u8 addr_type);
 684 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
 685 int hci_smp_ltks_clear(struct hci_dev *hdev);
 686 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 687
 688 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 689 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 690                                                         bdaddr_t *bdaddr);
 691 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 692                                                                 u8 *randomizer);
 693 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 694
 695 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
 696 int hci_adv_entries_clear(struct hci_dev *hdev);
 697 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
 698 int hci_add_adv_entry(struct hci_dev *hdev,
 699                                         struct hci_ev_le_advertising_info *ev);
 700
 701 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 702
 703 int hci_recv_frame(struct sk_buff *skb);
 704 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 705 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 706
 707 void hci_init_sysfs(struct hci_dev *hdev);
 708 int hci_add_sysfs(struct hci_dev *hdev);
 709 void hci_del_sysfs(struct hci_dev *hdev);
 710 void hci_conn_init_sysfs(struct hci_conn *conn);
 711 void hci_conn_add_sysfs(struct hci_conn *conn);
 712 void hci_conn_del_sysfs(struct hci_conn *conn);
 713
 714 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
 715
 716 /* ----- LMP capabilities ----- */
 717 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 718 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 719 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 720 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 721 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 722 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 723 #define lmp_no_flush_capable(dev)  ((dev)->features[6] & LMP_NO_FLUSH)
 724 #define lmp_le_capable(dev)        ((dev)->features[4] & LMP_LE)
 725 #define lmp_bredr_capable(dev)     (!((dev)->features[4] & LMP_NO_BREDR))
 726
 727 /* ----- Extended LMP capabilities ----- */
 728 #define lmp_host_le_capable(dev)   ((dev)->host_features[0] & LMP_HOST_LE)
 729
 730 /* ----- HCI protocols ----- */
 731 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 732                                                                 __u8 type)
 733 {
 734         switch (type) {
 735         case ACL_LINK:
 736                 return l2cap_connect_ind(hdev, bdaddr);
 737
 738         case SCO_LINK:
 739         case ESCO_LINK:
 740                 return sco_connect_ind(hdev, bdaddr);
 741
 742         default:
 743                 BT_ERR("unknown link type %d", type);
 744                 return -EINVAL;
 745         }
 746 }
 747
 748 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 749 {
 750         switch (conn->type) {
 751         case ACL_LINK:
 752         case LE_LINK:
 753                 l2cap_connect_cfm(conn, status);
 754                 break;
 755
 756         case SCO_LINK:
 757         case ESCO_LINK:
 758                 sco_connect_cfm(conn, status);
 759                 break;
 760
 761         default:
 762                 BT_ERR("unknown link type %d", conn->type);
 763                 break;
 764         }
 765
 766         if (conn->connect_cfm_cb)
 767                 conn->connect_cfm_cb(conn, status);
 768 }
 769
 770 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 771 {
 772         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 773                 return HCI_ERROR_REMOTE_USER_TERM;
 774
 775         return l2cap_disconn_ind(conn);
 776 }
 777
 778 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 779 {
 780         switch (conn->type) {
 781         case ACL_LINK:
 782         case LE_LINK:
 783                 l2cap_disconn_cfm(conn, reason);
 784                 break;
 785
 786         case SCO_LINK:
 787         case ESCO_LINK:
 788                 sco_disconn_cfm(conn, reason);
 789                 break;
 790
 791         default:
 792                 BT_ERR("unknown link type %d", conn->type);
 793                 break;
 794         }
 795
 796         if (conn->disconn_cfm_cb)
 797                 conn->disconn_cfm_cb(conn, reason);
 798 }
 799
 800 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 801 {
 802         __u8 encrypt;
 803
 804         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 805                 return;
 806
 807         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 808                 return;
 809
 810         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 811         l2cap_security_cfm(conn, status, encrypt);
 812
 813         if (conn->security_cfm_cb)
 814                 conn->security_cfm_cb(conn, status);
 815 }
 816
 817 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 818                                                                 __u8 encrypt)
 819 {
 820         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 821                 return;
 822
 823         l2cap_security_cfm(conn, status, encrypt);
 824
 825         if (conn->security_cfm_cb)
 826                 conn->security_cfm_cb(conn, status);
 827 }
 828
 829 /* ----- HCI callbacks ----- */
 830 struct hci_cb {
 831         struct list_head list;
 832
 833         char *name;
 834
 835         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 836                                                                 __u8 encrypt);
 837         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 838         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 839 };
 840
 841 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 842 {
 843         struct list_head *p;
 844         __u8 encrypt;
 845
 846         hci_proto_auth_cfm(conn, status);
 847
 848         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 849                 return;
 850
 851         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 852
 853         read_lock(&hci_cb_list_lock);
 854         list_for_each(p, &hci_cb_list) {
 855                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 856                 if (cb->security_cfm)
 857                         cb->security_cfm(conn, status, encrypt);
 858         }
 859         read_unlock(&hci_cb_list_lock);
 860 }
 861
 862 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 863                                                                 __u8 encrypt)
 864 {
 865         struct list_head *p;
 866
 867         if (conn->sec_level == BT_SECURITY_SDP)
 868                 conn->sec_level = BT_SECURITY_LOW;
 869
 870         if (conn->pending_sec_level > conn->sec_level)
 871                 conn->sec_level = conn->pending_sec_level;
 872
 873         hci_proto_encrypt_cfm(conn, status, encrypt);
 874
 875         read_lock(&hci_cb_list_lock);
 876         list_for_each(p, &hci_cb_list) {
 877                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 878                 if (cb->security_cfm)
 879                         cb->security_cfm(conn, status, encrypt);
 880         }
 881         read_unlock(&hci_cb_list_lock);
 882 }
 883
 884 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 885 {
 886         struct list_head *p;
 887
 888         read_lock(&hci_cb_list_lock);
 889         list_for_each(p, &hci_cb_list) {
 890                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 891                 if (cb->key_change_cfm)
 892                         cb->key_change_cfm(conn, status);
 893         }
 894         read_unlock(&hci_cb_list_lock);
 895 }
 896
 897 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 898                                                                 __u8 role)
 899 {
 900         struct list_head *p;
 901
 902         read_lock(&hci_cb_list_lock);
 903         list_for_each(p, &hci_cb_list) {
 904                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 905                 if (cb->role_switch_cfm)
 906                         cb->role_switch_cfm(conn, status, role);
 907         }
 908         read_unlock(&hci_cb_list_lock);
 909 }
 910
 911 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
 912 {
 913         size_t parsed = 0;
 914
 915         if (data_len < 2)
 916                 return false;
 917
 918         while (parsed < data_len - 1) {
 919                 u8 field_len = data[0];
 920
 921                 if (field_len == 0)
 922                         break;
 923
 924                 parsed += field_len + 1;
 925
 926                 if (parsed > data_len)
 927                         break;
 928
 929                 if (data[1] == type)
 930                         return true;
 931
 932                 data += field_len + 1;
 933         }
 934
 935         return false;
 936 }
 937
 938 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
 939                                   u8 data_len)
 940 {
 941         eir[eir_len++] = sizeof(type) + data_len;
 942         eir[eir_len++] = type;
 943         memcpy(&eir[eir_len], data, data_len);
 944         eir_len += data_len;
 945
 946         return eir_len;
 947 }
 948
 949 int hci_register_cb(struct hci_cb *hcb);
 950 int hci_unregister_cb(struct hci_cb *hcb);
 951
 952 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 953 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
 954 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 955
 956 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 957
 958 /* ----- HCI Sockets ----- */
 959 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
 960 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
 961 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
 962
 963 void hci_sock_dev_event(struct hci_dev *hdev, int event);
 964
 965 /* Management interface */
 966 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
 967 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
 968                                          BIT(BDADDR_LE_RANDOM))
 969 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
 970                                          BIT(BDADDR_LE_PUBLIC) | \
 971                                          BIT(BDADDR_LE_RANDOM))
 972
 973 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
 974 int mgmt_index_added(struct hci_dev *hdev);
 975 int mgmt_index_removed(struct hci_dev *hdev);
 976 int mgmt_powered(struct hci_dev *hdev, u8 powered);
 977 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
 978 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
 979 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
 980 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
 981                       bool persistent);
 982 int mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 983                           u8 addr_type, u32 flags, u8 *name, u8 name_len,
 984                           u8 *dev_class);
 985 int mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
 986                              u8 link_type, u8 addr_type);
 987 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
 988                            u8 link_type, u8 addr_type, u8 status);
 989 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 990                         u8 addr_type, u8 status);
 991 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
 992 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 993                                  u8 status);
 994 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 995                                      u8 status);
 996 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
 997                               u8 link_type, u8 addr_type, __le32 value,
 998                               u8 confirm_hint);
 999 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1000                                      u8 link_type, u8 addr_type, u8 status);
1001 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1002                                          u8 link_type, u8 addr_type, u8 status);
1003 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1004                               u8 link_type, u8 addr_type);
1005 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1006                                      u8 link_type, u8 addr_type, u8 status);
1007 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1008                                          u8 link_type, u8 addr_type, u8 status);
1009 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1010                      u8 addr_type, u8 status);
1011 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1012 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1013 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1014                                    u8 status);
1015 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1016 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1017                                             u8 *randomizer, u8 status);
1018 int mgmt_le_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1019 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1020                       u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1021                       u8 ssp, u8 *eir, u16 eir_len);
1022 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1023                      u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1024 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
1025 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
1026 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1027 int mgmt_interleaved_discovery(struct hci_dev *hdev);
1028 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1029 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1030
1031 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1032
1033 /* HCI info for socket */
1034 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1035
1036 struct hci_pinfo {
1037         struct bt_sock    bt;
1038         struct hci_dev    *hdev;
1039         struct hci_filter filter;
1040         __u32             cmsg_mask;
1041         unsigned short   channel;
1042 };
1043
1044 /* HCI security filter */
1045 #define HCI_SFLT_MAX_OGF  5
1046
1047 struct hci_sec_filter {
1048         __u32 type_mask;
1049         __u32 event_mask[2];
1050         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1051 };
1052
1053 /* ----- HCI requests ----- */
1054 #define HCI_REQ_DONE      0
1055 #define HCI_REQ_PEND      1
1056 #define HCI_REQ_CANCELED  2
1057
1058 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
1059 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
1060
1061 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
1062
1063 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1064                                         u16 latency, u16 to_multiplier);
1065 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1066                                                         __u8 ltk[16]);
1067 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]);
1068 void hci_le_ltk_neg_reply(struct hci_conn *conn);
1069
1070 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
1071 int hci_cancel_inquiry(struct hci_dev *hdev);
1072 int hci_le_scan(struct hci_dev *hdev, u8 type, u16 interval, u16 window,
1073                 int timeout);
1074 int hci_cancel_le_scan(struct hci_dev *hdev);
1075
1076 #endif /* __HCI_CORE_H */