include/net/bluetooth/hci_core.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
   4
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 #ifndef __HCI_CORE_H
  26 #define __HCI_CORE_H
  27
  28 #include <net/bluetooth/hci.h>
  29
  30 /* HCI priority */
  31 #define HCI_PRIO_MAX    7
  32
  33 /* HCI Core structures */
  34 struct inquiry_data {
  35         bdaddr_t        bdaddr;
  36         __u8            pscan_rep_mode;
  37         __u8            pscan_period_mode;
  38         __u8            pscan_mode;
  39         __u8            dev_class[3];
  40         __le16          clock_offset;
  41         __s8            rssi;
  42         __u8            ssp_mode;
  43 };
  44
  45 struct inquiry_entry {
  46         struct list_head        all;            /* inq_cache.all */
  47         struct list_head        list;           /* unknown or resolve */
  48         enum {
  49                 NAME_NOT_KNOWN,
  50                 NAME_NEEDED,
  51                 NAME_PENDING,
  52                 NAME_KNOWN,
  53         } name_state;
  54         __u32                   timestamp;
  55         struct inquiry_data     data;
  56 };
  57
  58 struct discovery_state {
  59         int                     type;
  60         enum {
  61                 DISCOVERY_STOPPED,
  62                 DISCOVERY_STARTING,
  63                 DISCOVERY_FINDING,
  64                 DISCOVERY_RESOLVING,
  65                 DISCOVERY_STOPPING,
  66         } state;
  67         struct list_head        all;    /* All devices found during inquiry */
  68         struct list_head        unknown;        /* Name state not known */
  69         struct list_head        resolve;        /* Name needs to be resolved */
  70         __u32                   timestamp;
  71 };
  72
  73 struct hci_conn_hash {
  74         struct list_head list;
  75         unsigned int     acl_num;
  76         unsigned int     amp_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 size;
  90         u8 svc_hint;
  91 };
  92
  93 struct smp_ltk {
  94         struct list_head list;
  95         bdaddr_t bdaddr;
  96         u8 bdaddr_type;
  97         u8 authenticated;
  98         u8 type;
  99         u8 enc_size;
 100         __le16 ediv;
 101         u8 rand[8];
 102         u8 val[16];
 103 } __packed;
 104
 105 struct link_key {
 106         struct list_head list;
 107         bdaddr_t bdaddr;
 108         u8 type;
 109         u8 val[HCI_LINK_KEY_SIZE];
 110         u8 pin_len;
 111 };
 112
 113 struct oob_data {
 114         struct list_head list;
 115         bdaddr_t bdaddr;
 116         u8 hash[16];
 117         u8 randomizer[16];
 118 };
 119
 120 #define HCI_MAX_SHORT_NAME_LENGTH       10
 121
 122 struct amp_assoc {
 123         __u16   len;
 124         __u16   offset;
 125         __u16   rem_len;
 126         __u16   len_so_far;
 127         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
 128 };
 129
 130 #define HCI_MAX_PAGES   3
 131
 132 #define NUM_REASSEMBLY 4
 133 struct hci_dev {
 134         struct list_head list;
 135         struct mutex    lock;
 136
 137         char            name[8];
 138         unsigned long   flags;
 139         __u16           id;
 140         __u8            bus;
 141         __u8            dev_type;
 142         bdaddr_t        bdaddr;
 143         bdaddr_t        static_addr;
 144         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 145         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 146         __u8            eir[HCI_MAX_EIR_LENGTH];
 147         __u8            dev_class[3];
 148         __u8            major_class;
 149         __u8            minor_class;
 150         __u8            max_page;
 151         __u8            features[HCI_MAX_PAGES][8];
 152         __u8            le_features[8];
 153         __u8            le_white_list_size;
 154         __u8            le_states[8];
 155         __u8            commands[64];
 156         __u8            hci_ver;
 157         __u16           hci_rev;
 158         __u8            lmp_ver;
 159         __u16           manufacturer;
 160         __u16           lmp_subver;
 161         __u16           voice_setting;
 162         __u8            num_iac;
 163         __u8            io_capability;
 164         __s8            inq_tx_power;
 165         __u16           page_scan_interval;
 166         __u16           page_scan_window;
 167         __u8            page_scan_type;
 168         __u16           le_scan_interval;
 169         __u16           le_scan_window;
 170
 171         __u16           devid_source;
 172         __u16           devid_vendor;
 173         __u16           devid_product;
 174         __u16           devid_version;
 175
 176         __u16           pkt_type;
 177         __u16           esco_type;
 178         __u16           link_policy;
 179         __u16           link_mode;
 180
 181         __u32           idle_timeout;
 182         __u16           sniff_min_interval;
 183         __u16           sniff_max_interval;
 184
 185         __u8            amp_status;
 186         __u32           amp_total_bw;
 187         __u32           amp_max_bw;
 188         __u32           amp_min_latency;
 189         __u32           amp_max_pdu;
 190         __u8            amp_type;
 191         __u16           amp_pal_cap;
 192         __u16           amp_assoc_size;
 193         __u32           amp_max_flush_to;
 194         __u32           amp_be_flush_to;
 195
 196         struct amp_assoc        loc_assoc;
 197
 198         __u8            flow_ctl_mode;
 199
 200         unsigned int    auto_accept_delay;
 201
 202         unsigned long   quirks;
 203
 204         atomic_t        cmd_cnt;
 205         unsigned int    acl_cnt;
 206         unsigned int    sco_cnt;
 207         unsigned int    le_cnt;
 208
 209         unsigned int    acl_mtu;
 210         unsigned int    sco_mtu;
 211         unsigned int    le_mtu;
 212         unsigned int    acl_pkts;
 213         unsigned int    sco_pkts;
 214         unsigned int    le_pkts;
 215
 216         __u16           block_len;
 217         __u16           block_mtu;
 218         __u16           num_blocks;
 219         __u16           block_cnt;
 220
 221         unsigned long   acl_last_tx;
 222         unsigned long   sco_last_tx;
 223         unsigned long   le_last_tx;
 224
 225         struct workqueue_struct *workqueue;
 226         struct workqueue_struct *req_workqueue;
 227
 228         struct work_struct      power_on;
 229         struct delayed_work     power_off;
 230
 231         __u16                   discov_timeout;
 232         struct delayed_work     discov_off;
 233
 234         struct delayed_work     service_cache;
 235
 236         struct timer_list       cmd_timer;
 237
 238         struct work_struct      rx_work;
 239         struct work_struct      cmd_work;
 240         struct work_struct      tx_work;
 241
 242         struct sk_buff_head     rx_q;
 243         struct sk_buff_head     raw_q;
 244         struct sk_buff_head     cmd_q;
 245
 246         struct sk_buff          *recv_evt;
 247         struct sk_buff          *sent_cmd;
 248         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 249
 250         struct mutex            req_lock;
 251         wait_queue_head_t       req_wait_q;
 252         __u32                   req_status;
 253         __u32                   req_result;
 254
 255         struct list_head        mgmt_pending;
 256
 257         struct discovery_state  discovery;
 258         struct hci_conn_hash    conn_hash;
 259         struct list_head        blacklist;
 260
 261         struct list_head        uuids;
 262
 263         struct list_head        link_keys;
 264
 265         struct list_head        long_term_keys;
 266
 267         struct list_head        remote_oob_data;
 268
 269         struct hci_dev_stats    stat;
 270
 271         atomic_t                promisc;
 272
 273         struct dentry           *debugfs;
 274
 275         struct device           dev;
 276
 277         struct rfkill           *rfkill;
 278
 279         unsigned long           dev_flags;
 280
 281         struct delayed_work     le_scan_disable;
 282
 283         __s8                    adv_tx_power;
 284         __u8                    adv_data[HCI_MAX_AD_LENGTH];
 285         __u8                    adv_data_len;
 286
 287         int (*open)(struct hci_dev *hdev);
 288         int (*close)(struct hci_dev *hdev);
 289         int (*flush)(struct hci_dev *hdev);
 290         int (*setup)(struct hci_dev *hdev);
 291         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 292         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 293 };
 294
 295 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 296
 297 struct hci_conn {
 298         struct list_head list;
 299
 300         atomic_t        refcnt;
 301
 302         bdaddr_t        dst;
 303         __u8            dst_type;
 304         bdaddr_t        src;
 305         __u8            src_type;
 306         __u16           handle;
 307         __u16           state;
 308         __u8            mode;
 309         __u8            type;
 310         bool            out;
 311         __u8            attempt;
 312         __u8            dev_class[3];
 313         __u8            features[HCI_MAX_PAGES][8];
 314         __u16           interval;
 315         __u16           pkt_type;
 316         __u16           link_policy;
 317         __u32           link_mode;
 318         __u8            key_type;
 319         __u8            auth_type;
 320         __u8            sec_level;
 321         __u8            pending_sec_level;
 322         __u8            pin_length;
 323         __u8            enc_key_size;
 324         __u8            io_capability;
 325         __u32           passkey_notify;
 326         __u8            passkey_entered;
 327         __u16           disc_timeout;
 328         __u16           setting;
 329         unsigned long   flags;
 330
 331         __u8            remote_cap;
 332         __u8            remote_auth;
 333         __u8            remote_id;
 334         bool            flush_key;
 335
 336         unsigned int    sent;
 337
 338         struct sk_buff_head data_q;
 339         struct list_head chan_list;
 340
 341         struct delayed_work disc_work;
 342         struct timer_list idle_timer;
 343         struct timer_list auto_accept_timer;
 344
 345         struct device   dev;
 346
 347         struct hci_dev  *hdev;
 348         void            *l2cap_data;
 349         void            *sco_data;
 350         void            *smp_conn;
 351         struct amp_mgr  *amp_mgr;
 352
 353         struct hci_conn *link;
 354
 355         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 356         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 357         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 358 };
 359
 360 struct hci_chan {
 361         struct list_head list;
 362         __u16 handle;
 363         struct hci_conn *conn;
 364         struct sk_buff_head data_q;
 365         unsigned int    sent;
 366         __u8            state;
 367 };
 368
 369 extern struct list_head hci_dev_list;
 370 extern struct list_head hci_cb_list;
 371 extern rwlock_t hci_dev_list_lock;
 372 extern rwlock_t hci_cb_list_lock;
 373
 374 /* ----- HCI interface to upper protocols ----- */
 375 extern int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 376 extern void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 377 extern int l2cap_disconn_ind(struct hci_conn *hcon);
 378 extern void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 379 extern int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 380 extern int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb,
 381                               u16 flags);
 382
 383 extern int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 384 extern void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 385 extern void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 386 extern int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 387
 388 /* ----- Inquiry cache ----- */
 389 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 390 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 391
 392 static inline void discovery_init(struct hci_dev *hdev)
 393 {
 394         hdev->discovery.state = DISCOVERY_STOPPED;
 395         INIT_LIST_HEAD(&hdev->discovery.all);
 396         INIT_LIST_HEAD(&hdev->discovery.unknown);
 397         INIT_LIST_HEAD(&hdev->discovery.resolve);
 398 }
 399
 400 bool hci_discovery_active(struct hci_dev *hdev);
 401
 402 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 403
 404 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 405 {
 406         return list_empty(&hdev->discovery.all);
 407 }
 408
 409 static inline long inquiry_cache_age(struct hci_dev *hdev)
 410 {
 411         struct discovery_state *c = &hdev->discovery;
 412         return jiffies - c->timestamp;
 413 }
 414
 415 static inline long inquiry_entry_age(struct inquiry_entry *e)
 416 {
 417         return jiffies - e->timestamp;
 418 }
 419
 420 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 421                                                bdaddr_t *bdaddr);
 422 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 423                                                        bdaddr_t *bdaddr);
 424 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 425                                                        bdaddr_t *bdaddr,
 426                                                        int state);
 427 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 428                                       struct inquiry_entry *ie);
 429 bool hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 430                               bool name_known, bool *ssp);
 431 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 432
 433 /* ----- HCI Connections ----- */
 434 enum {
 435         HCI_CONN_AUTH_PEND,
 436         HCI_CONN_REAUTH_PEND,
 437         HCI_CONN_ENCRYPT_PEND,
 438         HCI_CONN_RSWITCH_PEND,
 439         HCI_CONN_MODE_CHANGE_PEND,
 440         HCI_CONN_SCO_SETUP_PEND,
 441         HCI_CONN_LE_SMP_PEND,
 442         HCI_CONN_MGMT_CONNECTED,
 443         HCI_CONN_SSP_ENABLED,
 444         HCI_CONN_POWER_SAVE,
 445         HCI_CONN_REMOTE_OOB,
 446 };
 447
 448 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 449 {
 450         struct hci_dev *hdev = conn->hdev;
 451         return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 452                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 453 }
 454
 455 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 456 {
 457         struct hci_conn_hash *h = &hdev->conn_hash;
 458         list_add_rcu(&c->list, &h->list);
 459         switch (c->type) {
 460         case ACL_LINK:
 461                 h->acl_num++;
 462                 break;
 463         case AMP_LINK:
 464                 h->amp_num++;
 465                 break;
 466         case LE_LINK:
 467                 h->le_num++;
 468                 break;
 469         case SCO_LINK:
 470         case ESCO_LINK:
 471                 h->sco_num++;
 472                 break;
 473         }
 474 }
 475
 476 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 477 {
 478         struct hci_conn_hash *h = &hdev->conn_hash;
 479
 480         list_del_rcu(&c->list);
 481         synchronize_rcu();
 482
 483         switch (c->type) {
 484         case ACL_LINK:
 485                 h->acl_num--;
 486                 break;
 487         case AMP_LINK:
 488                 h->amp_num--;
 489                 break;
 490         case LE_LINK:
 491                 h->le_num--;
 492                 break;
 493         case SCO_LINK:
 494         case ESCO_LINK:
 495                 h->sco_num--;
 496                 break;
 497         }
 498 }
 499
 500 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 501 {
 502         struct hci_conn_hash *h = &hdev->conn_hash;
 503         switch (type) {
 504         case ACL_LINK:
 505                 return h->acl_num;
 506         case AMP_LINK:
 507                 return h->amp_num;
 508         case LE_LINK:
 509                 return h->le_num;
 510         case SCO_LINK:
 511         case ESCO_LINK:
 512                 return h->sco_num;
 513         default:
 514                 return 0;
 515         }
 516 }
 517
 518 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 519                                                                 __u16 handle)
 520 {
 521         struct hci_conn_hash *h = &hdev->conn_hash;
 522         struct hci_conn  *c;
 523
 524         rcu_read_lock();
 525
 526         list_for_each_entry_rcu(c, &h->list, list) {
 527                 if (c->handle == handle) {
 528                         rcu_read_unlock();
 529                         return c;
 530                 }
 531         }
 532         rcu_read_unlock();
 533
 534         return NULL;
 535 }
 536
 537 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 538                                                         __u8 type, bdaddr_t *ba)
 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 && !bacmp(&c->dst, ba)) {
 547                         rcu_read_unlock();
 548                         return c;
 549                 }
 550         }
 551
 552         rcu_read_unlock();
 553
 554         return NULL;
 555 }
 556
 557 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 558                                                         __u8 type, __u16 state)
 559 {
 560         struct hci_conn_hash *h = &hdev->conn_hash;
 561         struct hci_conn  *c;
 562
 563         rcu_read_lock();
 564
 565         list_for_each_entry_rcu(c, &h->list, list) {
 566                 if (c->type == type && c->state == state) {
 567                         rcu_read_unlock();
 568                         return c;
 569                 }
 570         }
 571
 572         rcu_read_unlock();
 573
 574         return NULL;
 575 }
 576
 577 void hci_disconnect(struct hci_conn *conn, __u8 reason);
 578 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 579 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 580
 581 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 582 int hci_conn_del(struct hci_conn *conn);
 583 void hci_conn_hash_flush(struct hci_dev *hdev);
 584 void hci_conn_check_pending(struct hci_dev *hdev);
 585
 586 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 587 void hci_chan_del(struct hci_chan *chan);
 588 void hci_chan_list_flush(struct hci_conn *conn);
 589 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 590
 591 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 592                              __u8 dst_type, __u8 sec_level, __u8 auth_type);
 593 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 594                                  __u16 setting);
 595 int hci_conn_check_link_mode(struct hci_conn *conn);
 596 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 597 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 598 int hci_conn_change_link_key(struct hci_conn *conn);
 599 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 600
 601 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 602
 603 /*
 604  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 605  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 606  * working or anything else. They just guarantee that the object is available
 607  * and can be dereferenced. So you can use its locks, local variables and any
 608  * other constant data.
 609  * Before accessing runtime data, you _must_ lock the object and then check that
 610  * it is still running. As soon as you release the locks, the connection might
 611  * get dropped, though.
 612  *
 613  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 614  * how long the underlying connection is held. So every channel that runs on the
 615  * hci_conn object calls this to prevent the connection from disappearing. As
 616  * long as you hold a device, you must also guarantee that you have a valid
 617  * reference to the device via hci_conn_get() (or the initial reference from
 618  * hci_conn_add()).
 619  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 620  * break because nobody cares for that. But this means, we cannot use
 621  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 622  */
 623
 624 static inline void hci_conn_get(struct hci_conn *conn)
 625 {
 626         get_device(&conn->dev);
 627 }
 628
 629 static inline void hci_conn_put(struct hci_conn *conn)
 630 {
 631         put_device(&conn->dev);
 632 }
 633
 634 static inline void hci_conn_hold(struct hci_conn *conn)
 635 {
 636         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 637
 638         atomic_inc(&conn->refcnt);
 639         cancel_delayed_work(&conn->disc_work);
 640 }
 641
 642 static inline void hci_conn_drop(struct hci_conn *conn)
 643 {
 644         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 645
 646         if (atomic_dec_and_test(&conn->refcnt)) {
 647                 unsigned long timeo;
 648
 649                 switch (conn->type) {
 650                 case ACL_LINK:
 651                 case LE_LINK:
 652                         del_timer(&conn->idle_timer);
 653                         if (conn->state == BT_CONNECTED) {
 654                                 timeo = conn->disc_timeout;
 655                                 if (!conn->out)
 656                                         timeo *= 2;
 657                         } else {
 658                                 timeo = msecs_to_jiffies(10);
 659                         }
 660                         break;
 661
 662                 case AMP_LINK:
 663                         timeo = conn->disc_timeout;
 664                         break;
 665
 666                 default:
 667                         timeo = msecs_to_jiffies(10);
 668                         break;
 669                 }
 670
 671                 cancel_delayed_work(&conn->disc_work);
 672                 queue_delayed_work(conn->hdev->workqueue,
 673                                    &conn->disc_work, timeo);
 674         }
 675 }
 676
 677 /* ----- HCI Devices ----- */
 678 static inline void hci_dev_put(struct hci_dev *d)
 679 {
 680         BT_DBG("%s orig refcnt %d", d->name,
 681                atomic_read(&d->dev.kobj.kref.refcount));
 682
 683         put_device(&d->dev);
 684 }
 685
 686 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 687 {
 688         BT_DBG("%s orig refcnt %d", d->name,
 689                atomic_read(&d->dev.kobj.kref.refcount));
 690
 691         get_device(&d->dev);
 692         return d;
 693 }
 694
 695 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 696 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 697
 698 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 699 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 700
 701 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 702 {
 703         return dev_get_drvdata(&hdev->dev);
 704 }
 705
 706 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 707 {
 708         dev_set_drvdata(&hdev->dev, data);
 709 }
 710
 711 struct hci_dev *hci_dev_get(int index);
 712 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
 713
 714 struct hci_dev *hci_alloc_dev(void);
 715 void hci_free_dev(struct hci_dev *hdev);
 716 int hci_register_dev(struct hci_dev *hdev);
 717 void hci_unregister_dev(struct hci_dev *hdev);
 718 int hci_suspend_dev(struct hci_dev *hdev);
 719 int hci_resume_dev(struct hci_dev *hdev);
 720 int hci_dev_open(__u16 dev);
 721 int hci_dev_close(__u16 dev);
 722 int hci_dev_reset(__u16 dev);
 723 int hci_dev_reset_stat(__u16 dev);
 724 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 725 int hci_get_dev_list(void __user *arg);
 726 int hci_get_dev_info(void __user *arg);
 727 int hci_get_conn_list(void __user *arg);
 728 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 729 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 730 int hci_inquiry(void __user *arg);
 731
 732 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev,
 733                                          bdaddr_t *bdaddr);
 734 int hci_blacklist_clear(struct hci_dev *hdev);
 735 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 736 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
 737
 738 int hci_uuids_clear(struct hci_dev *hdev);
 739
 740 int hci_link_keys_clear(struct hci_dev *hdev);
 741 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 742 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 743                      bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 744 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 745 int hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type, u8 type,
 746                 int new_key, u8 authenticated, u8 tk[16], u8 enc_size,
 747                 __le16 ediv, u8 rand[8]);
 748 struct smp_ltk *hci_find_ltk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 749                                      u8 addr_type);
 750 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr);
 751 int hci_smp_ltks_clear(struct hci_dev *hdev);
 752 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 753
 754 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 755 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 756                                                         bdaddr_t *bdaddr);
 757 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 758                                                                 u8 *randomizer);
 759 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 760
 761 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 762
 763 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
 764 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 765 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 766
 767 void hci_init_sysfs(struct hci_dev *hdev);
 768 int hci_add_sysfs(struct hci_dev *hdev);
 769 void hci_del_sysfs(struct hci_dev *hdev);
 770 void hci_conn_init_sysfs(struct hci_conn *conn);
 771 void hci_conn_add_sysfs(struct hci_conn *conn);
 772 void hci_conn_del_sysfs(struct hci_conn *conn);
 773
 774 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
 775
 776 /* ----- LMP capabilities ----- */
 777 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
 778 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
 779 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
 780 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
 781 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
 782 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
 783 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
 784 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
 785 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
 786 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
 787 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
 788 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
 789 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
 790 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
 791 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
 792 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
 793 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
 794 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
 795 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
 796
 797 /* ----- Extended LMP capabilities ----- */
 798 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
 799 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
 800 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
 801
 802 /* ----- HCI protocols ----- */
 803 #define HCI_PROTO_DEFER             0x01
 804
 805 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 806                                         __u8 type, __u8 *flags)
 807 {
 808         switch (type) {
 809         case ACL_LINK:
 810                 return l2cap_connect_ind(hdev, bdaddr);
 811
 812         case SCO_LINK:
 813         case ESCO_LINK:
 814                 return sco_connect_ind(hdev, bdaddr, flags);
 815
 816         default:
 817                 BT_ERR("unknown link type %d", type);
 818                 return -EINVAL;
 819         }
 820 }
 821
 822 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 823 {
 824         switch (conn->type) {
 825         case ACL_LINK:
 826         case LE_LINK:
 827                 l2cap_connect_cfm(conn, status);
 828                 break;
 829
 830         case SCO_LINK:
 831         case ESCO_LINK:
 832                 sco_connect_cfm(conn, status);
 833                 break;
 834
 835         default:
 836                 BT_ERR("unknown link type %d", conn->type);
 837                 break;
 838         }
 839
 840         if (conn->connect_cfm_cb)
 841                 conn->connect_cfm_cb(conn, status);
 842 }
 843
 844 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 845 {
 846         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 847                 return HCI_ERROR_REMOTE_USER_TERM;
 848
 849         return l2cap_disconn_ind(conn);
 850 }
 851
 852 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 853 {
 854         switch (conn->type) {
 855         case ACL_LINK:
 856         case LE_LINK:
 857                 l2cap_disconn_cfm(conn, reason);
 858                 break;
 859
 860         case SCO_LINK:
 861         case ESCO_LINK:
 862                 sco_disconn_cfm(conn, reason);
 863                 break;
 864
 865         /* L2CAP would be handled for BREDR chan */
 866         case AMP_LINK:
 867                 break;
 868
 869         default:
 870                 BT_ERR("unknown link type %d", conn->type);
 871                 break;
 872         }
 873
 874         if (conn->disconn_cfm_cb)
 875                 conn->disconn_cfm_cb(conn, reason);
 876 }
 877
 878 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 879 {
 880         __u8 encrypt;
 881
 882         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 883                 return;
 884
 885         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 886                 return;
 887
 888         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 889         l2cap_security_cfm(conn, status, encrypt);
 890
 891         if (conn->security_cfm_cb)
 892                 conn->security_cfm_cb(conn, status);
 893 }
 894
 895 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 896                                                                 __u8 encrypt)
 897 {
 898         if (conn->type != ACL_LINK && conn->type != LE_LINK)
 899                 return;
 900
 901         l2cap_security_cfm(conn, status, encrypt);
 902
 903         if (conn->security_cfm_cb)
 904                 conn->security_cfm_cb(conn, status);
 905 }
 906
 907 /* ----- HCI callbacks ----- */
 908 struct hci_cb {
 909         struct list_head list;
 910
 911         char *name;
 912
 913         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 914                                                                 __u8 encrypt);
 915         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 916         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 917 };
 918
 919 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 920 {
 921         struct hci_cb *cb;
 922         __u8 encrypt;
 923
 924         hci_proto_auth_cfm(conn, status);
 925
 926         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
 927                 return;
 928
 929         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 930
 931         read_lock(&hci_cb_list_lock);
 932         list_for_each_entry(cb, &hci_cb_list, list) {
 933                 if (cb->security_cfm)
 934                         cb->security_cfm(conn, status, encrypt);
 935         }
 936         read_unlock(&hci_cb_list_lock);
 937 }
 938
 939 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 940                                                                 __u8 encrypt)
 941 {
 942         struct hci_cb *cb;
 943
 944         if (conn->sec_level == BT_SECURITY_SDP)
 945                 conn->sec_level = BT_SECURITY_LOW;
 946
 947         if (conn->pending_sec_level > conn->sec_level)
 948                 conn->sec_level = conn->pending_sec_level;
 949
 950         hci_proto_encrypt_cfm(conn, status, encrypt);
 951
 952         read_lock(&hci_cb_list_lock);
 953         list_for_each_entry(cb, &hci_cb_list, list) {
 954                 if (cb->security_cfm)
 955                         cb->security_cfm(conn, status, encrypt);
 956         }
 957         read_unlock(&hci_cb_list_lock);
 958 }
 959
 960 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 961 {
 962         struct hci_cb *cb;
 963
 964         read_lock(&hci_cb_list_lock);
 965         list_for_each_entry(cb, &hci_cb_list, list) {
 966                 if (cb->key_change_cfm)
 967                         cb->key_change_cfm(conn, status);
 968         }
 969         read_unlock(&hci_cb_list_lock);
 970 }
 971
 972 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 973                                                                 __u8 role)
 974 {
 975         struct hci_cb *cb;
 976
 977         read_lock(&hci_cb_list_lock);
 978         list_for_each_entry(cb, &hci_cb_list, list) {
 979                 if (cb->role_switch_cfm)
 980                         cb->role_switch_cfm(conn, status, role);
 981         }
 982         read_unlock(&hci_cb_list_lock);
 983 }
 984
 985 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
 986 {
 987         size_t parsed = 0;
 988
 989         if (data_len < 2)
 990                 return false;
 991
 992         while (parsed < data_len - 1) {
 993                 u8 field_len = data[0];
 994
 995                 if (field_len == 0)
 996                         break;
 997
 998                 parsed += field_len + 1;
 999
1000                 if (parsed > data_len)
1001                         break;
1002
1003                 if (data[1] == type)
1004                         return true;
1005
1006                 data += field_len + 1;
1007         }
1008
1009         return false;
1010 }
1011
1012 static inline size_t eir_get_length(u8 *eir, size_t eir_len)
1013 {
1014         size_t parsed = 0;
1015
1016         while (parsed < eir_len) {
1017                 u8 field_len = eir[0];
1018
1019                 if (field_len == 0)
1020                         return parsed;
1021
1022                 parsed += field_len + 1;
1023                 eir += field_len + 1;
1024         }
1025
1026         return eir_len;
1027 }
1028
1029 static inline u16 eir_append_data(u8 *eir, u16 eir_len, u8 type, u8 *data,
1030                                   u8 data_len)
1031 {
1032         eir[eir_len++] = sizeof(type) + data_len;
1033         eir[eir_len++] = type;
1034         memcpy(&eir[eir_len], data, data_len);
1035         eir_len += data_len;
1036
1037         return eir_len;
1038 }
1039
1040 int hci_register_cb(struct hci_cb *hcb);
1041 int hci_unregister_cb(struct hci_cb *hcb);
1042
1043 struct hci_request {
1044         struct hci_dev          *hdev;
1045         struct sk_buff_head     cmd_q;
1046
1047         /* If something goes wrong when building the HCI request, the error
1048          * value is stored in this field.
1049          */
1050         int                     err;
1051 };
1052
1053 void hci_req_init(struct hci_request *req, struct hci_dev *hdev);
1054 int hci_req_run(struct hci_request *req, hci_req_complete_t complete);
1055 void hci_req_add(struct hci_request *req, u16 opcode, u32 plen,
1056                  const void *param);
1057 void hci_req_add_ev(struct hci_request *req, u16 opcode, u32 plen,
1058                     const void *param, u8 event);
1059 void hci_req_cmd_complete(struct hci_dev *hdev, u16 opcode, u8 status);
1060
1061 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1062                                const void *param, u32 timeout);
1063 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1064                                   const void *param, u8 event, u32 timeout);
1065
1066 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1067                  const void *param);
1068 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1069 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1070
1071 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1072
1073 /* ----- HCI Sockets ----- */
1074 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1075 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1076 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1077
1078 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1079
1080 /* Management interface */
1081 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1082 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1083                                          BIT(BDADDR_LE_RANDOM))
1084 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1085                                          BIT(BDADDR_LE_PUBLIC) | \
1086                                          BIT(BDADDR_LE_RANDOM))
1087
1088 /* These LE scan and inquiry parameters were chosen according to LE General
1089  * Discovery Procedure specification.
1090  */
1091 #define DISCOV_LE_SCAN_WIN              0x12
1092 #define DISCOV_LE_SCAN_INT              0x12
1093 #define DISCOV_LE_TIMEOUT               msecs_to_jiffies(10240)
1094 #define DISCOV_INTERLEAVED_TIMEOUT      msecs_to_jiffies(5120)
1095 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1096 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1097
1098 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1099 void mgmt_index_added(struct hci_dev *hdev);
1100 void mgmt_index_removed(struct hci_dev *hdev);
1101 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1102 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1103 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
1104 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
1105 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
1106 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1107                       bool persistent);
1108 void mgmt_device_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1109                            u8 addr_type, u32 flags, u8 *name, u8 name_len,
1110                            u8 *dev_class);
1111 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1112                               u8 link_type, u8 addr_type, u8 reason);
1113 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1114                             u8 link_type, u8 addr_type, u8 status);
1115 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1116                          u8 addr_type, u8 status);
1117 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1118 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1119                                  u8 status);
1120 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1121                                      u8 status);
1122 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1123                               u8 link_type, u8 addr_type, __le32 value,
1124                               u8 confirm_hint);
1125 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1126                                      u8 link_type, u8 addr_type, u8 status);
1127 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1128                                          u8 link_type, u8 addr_type, u8 status);
1129 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1130                               u8 link_type, u8 addr_type);
1131 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1132                                      u8 link_type, u8 addr_type, u8 status);
1133 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1134                                          u8 link_type, u8 addr_type, u8 status);
1135 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1136                              u8 link_type, u8 addr_type, u32 passkey,
1137                              u8 entered);
1138 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1139                      u8 addr_type, u8 status);
1140 int mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1141 int mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1142 int mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1143                                    u8 status);
1144 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1145 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
1146                                             u8 *randomizer, u8 status);
1147 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1148                        u8 addr_type, u8 *dev_class, s8 rssi, u8 cfm_name,
1149                        u8 ssp, u8 *eir, u16 eir_len);
1150 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1151                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1152 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1153 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1154 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1155 int mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, u8 persistent);
1156 void mgmt_reenable_advertising(struct hci_dev *hdev);
1157
1158 /* HCI info for socket */
1159 #define hci_pi(sk) ((struct hci_pinfo *) sk)
1160
1161 struct hci_pinfo {
1162         struct bt_sock    bt;
1163         struct hci_dev    *hdev;
1164         struct hci_filter filter;
1165         __u32             cmsg_mask;
1166         unsigned short   channel;
1167 };
1168
1169 /* HCI security filter */
1170 #define HCI_SFLT_MAX_OGF  5
1171
1172 struct hci_sec_filter {
1173         __u32 type_mask;
1174         __u32 event_mask[2];
1175         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
1176 };
1177
1178 /* ----- HCI requests ----- */
1179 #define HCI_REQ_DONE      0
1180 #define HCI_REQ_PEND      1
1181 #define HCI_REQ_CANCELED  2
1182
1183 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
1184 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
1185
1186 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
1187                                         u16 latency, u16 to_multiplier);
1188 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
1189                                                         __u8 ltk[16]);
1190
1191 #define SCO_AIRMODE_MASK       0x0003
1192 #define SCO_AIRMODE_CVSD       0x0000
1193 #define SCO_AIRMODE_TRANSP     0x0003
1194
1195 #endif /* __HCI_CORE_H */