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         __le16          lmp_subver;
 159         __u16           voice_setting;
 160         __u8            io_capability;
 161
 162         __u16           pkt_type;
 163         __u16           esco_type;
 164         __u16           link_policy;
 165         __u16           link_mode;
 166
 167         __u32           idle_timeout;
 168         __u16           sniff_min_interval;
 169         __u16           sniff_max_interval;
 170
 171         __u8            amp_status;
 172         __u32           amp_total_bw;
 173         __u32           amp_max_bw;
 174         __u32           amp_min_latency;
 175         __u32           amp_max_pdu;
 176         __u8            amp_type;
 177         __u16           amp_pal_cap;
 178         __u16           amp_assoc_size;
 179         __u32           amp_max_flush_to;
 180         __u32           amp_be_flush_to;
 181
 182         __u8            flow_ctl_mode;
 183
 184         unsigned int    auto_accept_delay;
 185
 186         unsigned long   quirks;
 187
 188         atomic_t        cmd_cnt;
 189         unsigned int    acl_cnt;
 190         unsigned int    sco_cnt;
 191         unsigned int    le_cnt;
 192
 193         unsigned int    acl_mtu;
 194         unsigned int    sco_mtu;
 195         unsigned int    le_mtu;
 196         unsigned int    acl_pkts;
 197         unsigned int    sco_pkts;
 198         unsigned int    le_pkts;
 199
 200         __u16           block_len;
 201         __u16           block_mtu;
 202         __u16           num_blocks;
 203         __u16           block_cnt;
 204
 205         unsigned long   acl_last_tx;
 206         unsigned long   sco_last_tx;
 207         unsigned long   le_last_tx;
 208
 209         struct workqueue_struct *workqueue;
 210
 211         struct work_struct      power_on;
 212         struct delayed_work     power_off;
 213
 214         __u16                   discov_timeout;
 215         struct delayed_work     discov_off;
 216
 217         struct delayed_work     service_cache;
 218
 219         struct timer_list       cmd_timer;
 220
 221         struct work_struct      rx_work;
 222         struct work_struct      cmd_work;
 223         struct work_struct      tx_work;
 224
 225         struct sk_buff_head     rx_q;
 226         struct sk_buff_head     raw_q;
 227         struct sk_buff_head     cmd_q;
 228
 229         struct sk_buff          *sent_cmd;
 230         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 231
 232         struct mutex            req_lock;
 233         wait_queue_head_t       req_wait_q;
 234         __u32                   req_status;
 235         __u32                   req_result;
 236
 237         __u16                   init_last_cmd;
 238
 239         struct list_head        mgmt_pending;
 240
 241         struct discovery_state  discovery;
 242         struct hci_conn_hash    conn_hash;
 243         struct list_head        blacklist;
 244
 245         struct list_head        uuids;
 246
 247         struct list_head        link_keys;
 248
 249         struct list_head        long_term_keys;
 250
 251         struct list_head        remote_oob_data;
 252
 253         struct list_head        adv_entries;
 254         struct delayed_work     adv_work;
 255
 256         struct hci_dev_stats    stat;
 257
 258         struct sk_buff_head     driver_init;
 259
 260         void                    *core_data;
 261
 262         atomic_t                promisc;
 263
 264         struct dentry           *debugfs;
 265
 266         struct device           *parent;
 267         struct device           dev;
 268
 269         struct rfkill           *rfkill;
 270
 271         unsigned long           dev_flags;
 272
 273         struct delayed_work     le_scan_disable;
 274
 275         struct work_struct      le_scan;
 276         struct le_scan_params   le_scan_params;
 277
 278         int (*open)(struct hci_dev *hdev);
 279         int (*close)(struct hci_dev *hdev);
 280         int (*flush)(struct hci_dev *hdev);
 281         int (*send)(struct sk_buff *skb);
 282         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 283         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 284 };
 285
 286 struct hci_conn {
 287         struct list_head list;
 288
 289         atomic_t        refcnt;
 290
 291         bdaddr_t        dst;
 292         __u8            dst_type;
 293         __u16           handle;
 294         __u16           state;
 295         __u8            mode;
 296         __u8            type;
 297         bool            out;
 298         __u8            attempt;
 299         __u8            dev_class[3];
 300         __u8            features[8];
 301         __u16           interval;
 302         __u16           pkt_type;
 303         __u16           link_policy;
 304         __u32           link_mode;
 305         __u8            key_type;
 306         __u8            auth_type;
 307         __u8            sec_level;
 308         __u8            pending_sec_level;
 309         __u8            pin_length;
 310         __u8            enc_key_size;
 311         __u8            io_capability;
 312         __u16           disc_timeout;
 313         unsigned long   flags;
 314
 315         __u8            remote_cap;
 316         __u8            remote_auth;
 317
 318         unsigned int    sent;
 319
 320         struct sk_buff_head data_q;
 321         struct list_head chan_list;
 322
 323         struct delayed_work disc_work;
 324         struct timer_list idle_timer;
 325         struct timer_list auto_accept_timer;
 326
 327         struct device   dev;
 328         atomic_t        devref;
 329
 330         struct hci_dev  *hdev;
 331         void            *l2cap_data;
 332         void            *sco_data;
 333         void            *smp_conn;
 334
 335         struct hci_conn *link;
 336
 337         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 338         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 339         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 340 };
 341
 342 struct hci_chan {
 343         struct list_head list;
 344
 345         struct hci_conn *conn;
 346         struct sk_buff_head data_q;
 347         unsigned int    sent;
 348 };
 349
 350 extern struct list_head hci_dev_list;
 351 extern struct list_head hci_cb_list;
 352 extern rwlock_t hci_dev_list_lock;
 353 extern rwlock_t hci_cb_list_lock;
 354
 355 /* ----- HCI interface to upper protocols ----- */
 356 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 357 extern int l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 358 extern int l2cap_disconn_ind(struct hci_conn *hcon);
 359 extern int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 360 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 361 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 362
 363 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 364 extern int sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 365 extern int sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 366 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 367
 368 /* ----- Inquiry cache ----- */
 369 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 370 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 371
 372 static inline void discovery_init(struct hci_dev *hdev)
 373 {
 374         hdev->discovery.state = DISCOVERY_STOPPED;
 375         INIT_LIST_HEAD(&hdev->discovery.all);
 376         INIT_LIST_HEAD(&hdev->discovery.unknown);
 377         INIT_LIST_HEAD(&hdev->discovery.resolve);
 378 }
 379
 380 bool hci_discovery_active(struct hci_dev *hdev);
 381
 382 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 383
 384 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 385 {
 386         return list_empty(&hdev->discovery.all);
 387 }
 388
 389 static inline long inquiry_cache_age(struct hci_dev *hdev)
 390 {
 391         struct discovery_state *c = &hdev->discovery;
 392         return jiffies - c->timestamp;
 393 }
 394
 395 static inline long inquiry_entry_age(struct inquiry_entry *e)
 396 {
 397         return jiffies - e->timestamp;
 398 }
 399
 400 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 401                                                bdaddr_t *bdaddr);
 402 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 403                                                        bdaddr_t *bdaddr);
 404 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 405                                                        bdaddr_t *bdaddr,
 406                                                        int state);
 407 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 408                                       struct inquiry_entry *ie);
 409 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 410                               bool name_known, bool *ssp);
 411
 412 /* ----- HCI Connections ----- */
 413 enum {
 414         HCI_CONN_AUTH_PEND,
 415         HCI_CONN_REAUTH_PEND,
 416         HCI_CONN_ENCRYPT_PEND,
 417         HCI_CONN_RSWITCH_PEND,
 418         HCI_CONN_MODE_CHANGE_PEND,
 419         HCI_CONN_SCO_SETUP_PEND,
 420         HCI_CONN_LE_SMP_PEND,
 421         HCI_CONN_MGMT_CONNECTED,
 422         HCI_CONN_SSP_ENABLED,
 423         HCI_CONN_POWER_SAVE,
 424         HCI_CONN_REMOTE_OOB,
 425 };
 426
 427 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 428 {
 429         struct hci_dev *hdev = conn->hdev;
 430         return (test_bit(HCI_SSP_ENABLED, &hdev->flags) &&
 431                                 test_bit(HCI_CONN_SSP_ENABLED, &conn->flags));
 432 }
 433
 434 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 435 {
 436         struct hci_conn_hash *h = &hdev->conn_hash;
 437         INIT_LIST_HEAD(&h->list);
 438         h->acl_num = 0;
 439         h->sco_num = 0;
 440         h->le_num = 0;
 441 }
 442
 443 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 444 {
 445         struct hci_conn_hash *h = &hdev->conn_hash;
 446         list_add_rcu(&c->list, &h->list);
 447         switch (c->type) {
 448         case ACL_LINK:
 449                 h->acl_num++;
 450                 break;
 451         case LE_LINK:
 452                 h->le_num++;
 453                 break;
 454         case SCO_LINK:
 455         case ESCO_LINK:
 456                 h->sco_num++;
 457                 break;
 458         }
 459 }
 460
 461 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 462 {
 463         struct hci_conn_hash *h = &hdev->conn_hash;
 464
 465         list_del_rcu(&c->list);
 466         synchronize_rcu();
 467
 468         switch (c->type) {
 469         case ACL_LINK:
 470                 h->acl_num--;
 471                 break;
 472         case LE_LINK:
 473                 h->le_num--;
 474                 break;
 475         case SCO_LINK:
 476         case ESCO_LINK:
 477                 h->sco_num--;
 478                 break;
 479         }
 480 }
 481
 482 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 483 {
 484         struct hci_conn_hash *h = &hdev->conn_hash;
 485         switch (type) {
 486         case ACL_LINK:
 487                 return h->acl_num;
 488         case LE_LINK:
 489                 return h->le_num;
 490         case SCO_LINK:
 491         case ESCO_LINK:
 492                 return h->sco_num;
 493         default:
 494                 return 0;
 495         }
 496 }
 497
 498 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 499                                                                 __u16 handle)
 500 {
 501         struct hci_conn_hash *h = &hdev->conn_hash;
 502         struct hci_conn  *c;
 503
 504         rcu_read_lock();
 505
 506         list_for_each_entry_rcu(c, &h->list, list) {
 507                 if (c->handle == handle) {
 508                         rcu_read_unlock();
 509                         return c;
 510                 }
 511         }
 512         rcu_read_unlock();
 513
 514         return NULL;
 515 }
 516
 517 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 518                                                         __u8 type, bdaddr_t *ba)
 519 {
 520         struct hci_conn_hash *h = &hdev->conn_hash;
 521         struct hci_conn  *c;
 522
 523         rcu_read_lock();
 524
 525         list_for_each_entry_rcu(c, &h->list, list) {
 526                 if (c->type == type && !bacmp(&c->dst, ba)) {
 527                         rcu_read_unlock();
 528                         return c;
 529                 }
 530         }
 531
 532         rcu_read_unlock();
 533
 534         return NULL;
 535 }
 536
 537 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 538                                                         __u8 type, __u16 state)
 539 {
 540         struct hci_conn_hash *h = &hdev->conn_hash;
 541         struct hci_conn  *c;
 542
 543         rcu_read_lock();
 544
 545         list_for_each_entry_rcu(c, &h->list, list) {
 546                 if (c->type == type && c->state == state) {
 547                         rcu_read_unlock();
 548                         return c;
 549                 }
 550         }
 551
 552         rcu_read_unlock();
 553
 554         return NULL;
 555 }
 556
 557 void hci_acl_connect(struct hci_conn *conn);
 558 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 559 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 560 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 561 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 562
 563 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 564 int hci_conn_del(struct hci_conn *conn);
 565 void hci_conn_hash_flush(struct hci_dev *hdev);
 566 void hci_conn_check_pending(struct hci_dev *hdev);
 567
 568 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 569 int hci_chan_del(struct hci_chan *chan);
 570 void hci_chan_list_flush(struct hci_conn *conn);
 571
 572 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 573                                                 __u8 sec_level, __u8 auth_type);
 574 int hci_conn_check_link_mode(struct hci_conn *conn);
 575 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 576 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 577 int hci_conn_change_link_key(struct hci_conn *conn);
 578 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 579
 580 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 581
 582 void hci_conn_hold_device(struct hci_conn *conn);
 583 void hci_conn_put_device(struct hci_conn *conn);
 584
 585 static inline void hci_conn_hold(struct hci_conn *conn)
 586 {
 587         atomic_inc(&conn->refcnt);
 588         cancel_delayed_work(&conn->disc_work);
 589 }
 590
 591 static inline void hci_conn_put(struct hci_conn *conn)
 592 {
 593         if (atomic_dec_and_test(&conn->refcnt)) {
 594                 unsigned long timeo;
 595                 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
 596                         del_timer(&conn->idle_timer);
 597                         if (conn->state == BT_CONNECTED) {
 598                                 timeo = msecs_to_jiffies(conn->disc_timeout);
 599                                 if (!conn->out)
 600                                         timeo *= 2;
 601                         } else {
 602                                 timeo = msecs_to_jiffies(10);
 603                         }
 604                 } else {
 605                         timeo = msecs_to_jiffies(10);
 606                 }
 607                 cancel_delayed_work(&conn->disc_work);
 608                 queue_delayed_work(conn->hdev->workqueue,
 609                                         &conn->disc_work, timeo);
 610         }
 611 }
 612
 613 /* ----- HCI Devices ----- */
 614 static inline void hci_dev_put(struct hci_dev *d)
 615 {
 616         put_device(&d->dev);
 617 }
 618
 619 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 620 {
 621         get_device(&d->dev);
 622         return d;
 623 }
 624
 625 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 626 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 627
 628 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 629 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 630
 631 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 632 {
 633         return dev_get_drvdata(&hdev->dev);
 634 }
 635
 636 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 637 {
 638         dev_set_drvdata(&hdev->dev, data);
 639 }
 640
 641 struct hci_dev *hci_dev_get(int index);
 642 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 643
 644 struct hci_dev *hci_alloc_dev(void);
 645 void hci_free_dev(struct hci_dev *hdev);
 646 int hci_register_dev(struct hci_dev *hdev);
 647 void hci_unregister_dev(struct hci_dev *hdev);
 648 int hci_suspend_dev(struct hci_dev *hdev);
 649 int hci_resume_dev(struct hci_dev *hdev);
 650 int hci_dev_open(__u16 dev);
 651 int hci_dev_close(__u16 dev);
 652 int hci_dev_reset(__u16 dev);
 653 int hci_dev_reset_stat(__u16 dev);
 654 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 655 int hci_get_dev_list(void __user *arg);
 656 int hci_get_dev_info(void __user *arg);
 657 int hci_get_conn_list(void __user *arg);
 658 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 659 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 660 int hci_inquiry(void __user *arg);
 661
 662 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 663 int hci_blacklist_clear(struct hci_dev *hdev);
 664 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 665 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 666
 667 int hci_uuids_clear(struct hci_dev *hdev);
 668
 669 int hci_link_keys_clear(struct hci_dev *hdev);
 670 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 671 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 672                      bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 673 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 674 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
 675                 int new_key, u8 authenticated, u8 tk[16], u8 enc_size, u16 ediv,
 676                 u8 rand[8]);
 677 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 678                                      u8 addr_type);
 679 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
 680 int hci_smp_ltks_clear(struct hci_dev *hdev);
 681 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 682
 683 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 684 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 685                                                         bdaddr_t *bdaddr);
 686 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 687                                                                 u8 *randomizer);
 688 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 689
 690 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
 691 int hci_adv_entries_clear(struct hci_dev *hdev);
 692 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
 693 int hci_add_adv_entry(struct hci_dev *hdev,
 694                                         struct hci_ev_le_advertising_info *ev);
 695
 696 void hci_del_off_timer(struct hci_dev *hdev);
 697
 698 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 699
 700 int hci_recv_frame(struct sk_buff *skb);
 701 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 702 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 703
 704 void hci_init_sysfs(struct hci_dev *hdev);
 705 int hci_add_sysfs(struct hci_dev *hdev);
 706 void hci_del_sysfs(struct hci_dev *hdev);
 707 void hci_conn_init_sysfs(struct hci_conn *conn);
 708 void hci_conn_add_sysfs(struct hci_conn *conn);
 709 void hci_conn_del_sysfs(struct hci_conn *conn);
 710
 711 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 712
 713 /* ----- LMP capabilities ----- */
 714 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 715 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 716 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 717 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 718 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 719 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 720 #define lmp_no_flush_capable(dev)  ((dev)->features[6] & LMP_NO_FLUSH)
 721 #define lmp_le_capable(dev)        ((dev)->features[4] & LMP_LE)
 722 #define lmp_bredr_capable(dev)     (!((dev)->features[4] & LMP_NO_BREDR))
 723
 724 /* ----- Extended LMP capabilities ----- */
 725 #define lmp_host_le_capable(dev)   ((dev)->host_features[0] & LMP_HOST_LE)
 726
 727 /* ----- HCI protocols ----- */
 728 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 729                                                                 __u8 type)
 730 {
 731         switch (type) {
 732         case ACL_LINK:
 733                 return l2cap_connect_ind(hdev, bdaddr);
 734
 735         case SCO_LINK:
 736         case ESCO_LINK:
 737                 return sco_connect_ind(hdev, bdaddr);
 738
 739         default:
 740                 BT_ERR("unknown link type %d", type);
 741                 return -EINVAL;
 742         }
 743 }
 744
 745 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 746 {
 747         switch (conn->type) {
 748         case ACL_LINK:
 749         case LE_LINK:
 750                 l2cap_connect_cfm(conn, status);
 751                 break;
 752
 753         case SCO_LINK:
 754         case ESCO_LINK:
 755                 sco_connect_cfm(conn, status);
 756                 break;
 757
 758         default:
 759                 BT_ERR("unknown link type %d", conn->type);
 760                 break;
 761         }
 762
 763         if (conn->connect_cfm_cb)
 764                 conn->connect_cfm_cb(conn, status);
 765 }
 766
 767 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 768 {
 769         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 770                 return HCI_ERROR_REMOTE_USER_TERM;
 771
 772         return l2cap_disconn_ind(conn);
 773 }
 774
 775 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 776 {
 777         switch (conn->type) {
 778         case ACL_LINK:
 779         case LE_LINK:
 780                 l2cap_disconn_cfm(conn, reason);
 781                 break;
 782
 783         case SCO_LINK:
 784         case ESCO_LINK:
 785                 sco_disconn_cfm(conn, reason);
 786                 break;
 787
 788         default:
 789                 BT_ERR("unknown link type %d", conn->type);
 790                 break;
 791         }
 792
 793         if (conn->disconn_cfm_cb)
 794                 conn->disconn_cfm_cb(conn, reason);
 795 }
 796
 797 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 798 {
 799         __u8 encrypt;
 800
 801         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 802                 return;
 803
 804         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 805                 return;
 806
 807         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 808         l2cap_security_cfm(conn, status, encrypt);
 809
 810         if (conn->security_cfm_cb)
 811                 conn->security_cfm_cb(conn, status);
 812 }
 813
 814 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 815                                                                 __u8 encrypt)
 816 {
 817         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 818                 return;
 819
 820         l2cap_security_cfm(conn, status, encrypt);
 821
 822         if (conn->security_cfm_cb)
 823                 conn->security_cfm_cb(conn, status);
 824 }
 825
 826 /* ----- HCI callbacks ----- */
 827 struct hci_cb {
 828         struct list_head list;
 829
 830         char *name;
 831
 832         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 833                                                                 __u8 encrypt);
 834         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 835         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 836 };
 837
 838 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 839 {
 840         struct list_head *p;
 841         __u8 encrypt;
 842
 843         hci_proto_auth_cfm(conn, status);
 844
 845         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 846                 return;
 847
 848         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 849
 850         read_lock(&hci_cb_list_lock);
 851         list_for_each(p, &hci_cb_list) {
 852                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 853                 if (cb->security_cfm)
 854                         cb->security_cfm(conn, status, encrypt);
 855         }
 856         read_unlock(&hci_cb_list_lock);
 857 }
 858
 859 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 860                                                                 __u8 encrypt)
 861 {
 862         struct list_head *p;
 863
 864         if (conn->sec_level == BT_SECURITY_SDP)
 865                 conn->sec_level = BT_SECURITY_LOW;
 866
 867         if (conn->pending_sec_level > conn->sec_level)
 868                 conn->sec_level = conn->pending_sec_level;
 869
 870         hci_proto_encrypt_cfm(conn, status, encrypt);
 871
 872         read_lock(&hci_cb_list_lock);
 873         list_for_each(p, &hci_cb_list) {
 874                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 875                 if (cb->security_cfm)
 876                         cb->security_cfm(conn, status, encrypt);
 877         }
 878         read_unlock(&hci_cb_list_lock);
 879 }
 880
 881 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 882 {
 883         struct list_head *p;
 884
 885         read_lock(&hci_cb_list_lock);
 886         list_for_each(p, &hci_cb_list) {
 887                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 888                 if (cb->key_change_cfm)
 889                         cb->key_change_cfm(conn, status);
 890         }
 891         read_unlock(&hci_cb_list_lock);
 892 }
 893
 894 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 895                                                                 __u8 role)
 896 {
 897         struct list_head *p;
 898
 899         read_lock(&hci_cb_list_lock);
 900         list_for_each(p, &hci_cb_list) {
 901                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 902                 if (cb->role_switch_cfm)
 903                         cb->role_switch_cfm(conn, status, role);
 904         }
 905         read_unlock(&hci_cb_list_lock);
 906 }
 907
 908 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
 909 {
 910         u8 field_len;
 911         size_t parsed;
 912
 913         for (parsed = 0; parsed < data_len - 1; parsed += field_len) {
 914                 field_len = data[0];
 915
 916                 if (field_len == 0)
 917                         break;
 918
 919                 parsed += field_len + 1;
 920
 921                 if (parsed > data_len)
 922                         break;
 923
 924                 if (data[1] == type)
 925                         return true;
 926
 927                 data += field_len + 1;
 928         }
 929
 930         return false;
 931 }
 932
 933 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
 934                                   u8 data_len)
 935 {
 936         eir[eir_len++] = sizeof(type) + data_len;
 937         eir[eir_len++] = type;
 938         memcpy(&eir[eir_len], data, data_len);
 939         eir_len += data_len;
 940
 941         return eir_len;
 942 }
 943
 944 int hci_register_cb(struct hci_cb *hcb);
 945 int hci_unregister_cb(struct hci_cb *hcb);
 946
 947 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 948 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
 949 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 950
 951 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 952
 953 /* ----- HCI Sockets ----- */
 954 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
 955 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
 956 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
 957
 958 void hci_sock_dev_event(struct hci_dev *hdev, int event);
 959
 960 /* Management interface */
 961 #define MGMT_ADDR_BREDR                 0x00
 962 #define MGMT_ADDR_LE_PUBLIC             0x01
 963 #define MGMT_ADDR_LE_RANDOM             0x02
 964 #define MGMT_ADDR_INVALID               0xff
 965
 966 #define DISCOV_TYPE_BREDR               (BIT(MGMT_ADDR_BREDR))
 967 #define DISCOV_TYPE_LE                  (BIT(MGMT_ADDR_LE_PUBLIC) | \
 968                                                 BIT(MGMT_ADDR_LE_RANDOM))
 969 #define DISCOV_TYPE_INTERLEAVED         (BIT(MGMT_ADDR_BREDR) | \
 970                                                 BIT(MGMT_ADDR_LE_PUBLIC) | \
 971                                                 BIT(MGMT_ADDR_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                       u8 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
1075 #endif /* __HCI_CORE_H */