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