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 upper protocols */
  32 #define HCI_PROTO_L2CAP 0
  33 #define HCI_PROTO_SCO   1
  34
  35 /* HCI priority */
  36 #define HCI_PRIO_MAX    7
  37
  38 /* HCI Core structures */
  39 struct inquiry_data {
  40         bdaddr_t        bdaddr;
  41         __u8            pscan_rep_mode;
  42         __u8            pscan_period_mode;
  43         __u8            pscan_mode;
  44         __u8            dev_class[3];
  45         __le16          clock_offset;
  46         __s8            rssi;
  47         __u8            ssp_mode;
  48 };
  49
  50 struct inquiry_entry {
  51         struct inquiry_entry    *next;
  52         __u32                   timestamp;
  53         struct inquiry_data     data;
  54 };
  55
  56 struct inquiry_cache {
  57         spinlock_t              lock;
  58         __u32                   timestamp;
  59         struct inquiry_entry    *list;
  60 };
  61
  62 struct hci_conn_hash {
  63         struct list_head list;
  64         unsigned int     acl_num;
  65         unsigned int     sco_num;
  66         unsigned int     le_num;
  67 };
  68
  69 struct bdaddr_list {
  70         struct list_head list;
  71         bdaddr_t bdaddr;
  72 };
  73
  74 struct bt_uuid {
  75         struct list_head list;
  76         u8 uuid[16];
  77         u8 svc_hint;
  78 };
  79
  80 struct key_master_id {
  81         __le16 ediv;
  82         u8 rand[8];
  83 } __packed;
  84
  85 struct link_key_data {
  86         bdaddr_t bdaddr;
  87         u8 type;
  88         u8 val[16];
  89         u8 pin_len;
  90         u8 dlen;
  91         u8 data[0];
  92 } __packed;
  93
  94 struct link_key {
  95         struct list_head list;
  96         bdaddr_t bdaddr;
  97         u8 type;
  98         u8 val[16];
  99         u8 pin_len;
 100         u8 dlen;
 101         u8 data[0];
 102 };
 103
 104 struct oob_data {
 105         struct list_head list;
 106         bdaddr_t bdaddr;
 107         u8 hash[16];
 108         u8 randomizer[16];
 109 };
 110
 111 struct adv_entry {
 112         struct list_head list;
 113         bdaddr_t bdaddr;
 114         u8 bdaddr_type;
 115 };
 116
 117 #define NUM_REASSEMBLY 4
 118 struct hci_dev {
 119         struct list_head list;
 120         struct mutex    lock;
 121         atomic_t        refcnt;
 122
 123         char            name[8];
 124         unsigned long   flags;
 125         __u16           id;
 126         __u8            bus;
 127         __u8            dev_type;
 128         bdaddr_t        bdaddr;
 129         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 130         __u8            eir[HCI_MAX_EIR_LENGTH];
 131         __u8            dev_class[3];
 132         __u8            major_class;
 133         __u8            minor_class;
 134         __u8            features[8];
 135         __u8            extfeatures[8];
 136         __u8            commands[64];
 137         __u8            ssp_mode;
 138         __u8            hci_ver;
 139         __u16           hci_rev;
 140         __u8            lmp_ver;
 141         __u16           manufacturer;
 142         __le16          lmp_subver;
 143         __u16           voice_setting;
 144         __u8            io_capability;
 145
 146         __u16           pkt_type;
 147         __u16           esco_type;
 148         __u16           link_policy;
 149         __u16           link_mode;
 150
 151         __u32           idle_timeout;
 152         __u16           sniff_min_interval;
 153         __u16           sniff_max_interval;
 154
 155         __u8            amp_status;
 156         __u32           amp_total_bw;
 157         __u32           amp_max_bw;
 158         __u32           amp_min_latency;
 159         __u32           amp_max_pdu;
 160         __u8            amp_type;
 161         __u16           amp_pal_cap;
 162         __u16           amp_assoc_size;
 163         __u32           amp_max_flush_to;
 164         __u32           amp_be_flush_to;
 165
 166         __u8            flow_ctl_mode;
 167
 168         unsigned int    auto_accept_delay;
 169
 170         unsigned long   quirks;
 171
 172         atomic_t        cmd_cnt;
 173         unsigned int    acl_cnt;
 174         unsigned int    sco_cnt;
 175         unsigned int    le_cnt;
 176
 177         unsigned int    acl_mtu;
 178         unsigned int    sco_mtu;
 179         unsigned int    le_mtu;
 180         unsigned int    acl_pkts;
 181         unsigned int    sco_pkts;
 182         unsigned int    le_pkts;
 183
 184         unsigned long   acl_last_tx;
 185         unsigned long   sco_last_tx;
 186         unsigned long   le_last_tx;
 187
 188         struct workqueue_struct *workqueue;
 189
 190         struct work_struct      power_on;
 191         struct delayed_work     power_off;
 192
 193         __u16                   discov_timeout;
 194         struct delayed_work     discov_off;
 195
 196         struct delayed_work     service_cache;
 197
 198         struct timer_list       cmd_timer;
 199
 200         struct work_struct      rx_work;
 201         struct work_struct      cmd_work;
 202         struct work_struct      tx_work;
 203
 204         struct sk_buff_head     rx_q;
 205         struct sk_buff_head     raw_q;
 206         struct sk_buff_head     cmd_q;
 207
 208         struct sk_buff          *sent_cmd;
 209         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 210
 211         struct mutex            req_lock;
 212         wait_queue_head_t       req_wait_q;
 213         __u32                   req_status;
 214         __u32                   req_result;
 215
 216         __u16                   init_last_cmd;
 217
 218         struct list_head        mgmt_pending;
 219
 220         struct inquiry_cache    inq_cache;
 221         struct hci_conn_hash    conn_hash;
 222         struct list_head        blacklist;
 223
 224         struct list_head        uuids;
 225
 226         struct list_head        link_keys;
 227
 228         struct list_head        remote_oob_data;
 229
 230         struct list_head        adv_entries;
 231         struct delayed_work     adv_work;
 232
 233         struct hci_dev_stats    stat;
 234
 235         struct sk_buff_head     driver_init;
 236
 237         void                    *driver_data;
 238         void                    *core_data;
 239
 240         atomic_t                promisc;
 241
 242         struct dentry           *debugfs;
 243
 244         struct device           *parent;
 245         struct device           dev;
 246
 247         struct rfkill           *rfkill;
 248
 249         struct module           *owner;
 250
 251         unsigned long           dev_flags;
 252
 253         int (*open)(struct hci_dev *hdev);
 254         int (*close)(struct hci_dev *hdev);
 255         int (*flush)(struct hci_dev *hdev);
 256         int (*send)(struct sk_buff *skb);
 257         void (*destruct)(struct hci_dev *hdev);
 258         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 259         int (*ioctl)(struct hci_dev *hdev, unsigned int cmd, unsigned long arg);
 260 };
 261
 262 struct hci_conn {
 263         struct list_head list;
 264
 265         atomic_t        refcnt;
 266
 267         bdaddr_t        dst;
 268         __u8            dst_type;
 269         __u16           handle;
 270         __u16           state;
 271         __u8            mode;
 272         __u8            type;
 273         __u8            out;
 274         __u8            attempt;
 275         __u8            dev_class[3];
 276         __u8            features[8];
 277         __u8            ssp_mode;
 278         __u16           interval;
 279         __u16           pkt_type;
 280         __u16           link_policy;
 281         __u32           link_mode;
 282         __u8            key_type;
 283         __u8            auth_type;
 284         __u8            sec_level;
 285         __u8            pending_sec_level;
 286         __u8            pin_length;
 287         __u8            enc_key_size;
 288         __u8            io_capability;
 289         __u8            power_save;
 290         __u16           disc_timeout;
 291         unsigned long   pend;
 292
 293         __u8            remote_cap;
 294         __u8            remote_oob;
 295         __u8            remote_auth;
 296
 297         unsigned int    sent;
 298
 299         struct sk_buff_head data_q;
 300         struct list_head chan_list;
 301
 302         struct delayed_work disc_work;
 303         struct timer_list idle_timer;
 304         struct timer_list auto_accept_timer;
 305
 306         struct device   dev;
 307         atomic_t        devref;
 308
 309         struct hci_dev  *hdev;
 310         void            *l2cap_data;
 311         void            *sco_data;
 312
 313         struct hci_conn *link;
 314
 315         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 316         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 317         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 318 };
 319
 320 struct hci_chan {
 321         struct list_head list;
 322
 323         struct hci_conn *conn;
 324         struct sk_buff_head data_q;
 325         unsigned int    sent;
 326 };
 327
 328 extern struct hci_proto *hci_proto[];
 329 extern struct list_head hci_dev_list;
 330 extern struct list_head hci_cb_list;
 331 extern rwlock_t hci_dev_list_lock;
 332 extern rwlock_t hci_cb_list_lock;
 333
 334 /* ----- Inquiry cache ----- */
 335 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 336 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 337
 338 #define inquiry_cache_lock(c)           spin_lock(&c->lock)
 339 #define inquiry_cache_unlock(c)         spin_unlock(&c->lock)
 340 #define inquiry_cache_lock_bh(c)        spin_lock_bh(&c->lock)
 341 #define inquiry_cache_unlock_bh(c)      spin_unlock_bh(&c->lock)
 342
 343 static inline void inquiry_cache_init(struct hci_dev *hdev)
 344 {
 345         struct inquiry_cache *c = &hdev->inq_cache;
 346         spin_lock_init(&c->lock);
 347         c->list = NULL;
 348 }
 349
 350 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 351 {
 352         struct inquiry_cache *c = &hdev->inq_cache;
 353         return c->list == NULL;
 354 }
 355
 356 static inline long inquiry_cache_age(struct hci_dev *hdev)
 357 {
 358         struct inquiry_cache *c = &hdev->inq_cache;
 359         return jiffies - c->timestamp;
 360 }
 361
 362 static inline long inquiry_entry_age(struct inquiry_entry *e)
 363 {
 364         return jiffies - e->timestamp;
 365 }
 366
 367 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 368                                                         bdaddr_t *bdaddr);
 369 void hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data);
 370
 371 /* ----- HCI Connections ----- */
 372 enum {
 373         HCI_CONN_AUTH_PEND,
 374         HCI_CONN_REAUTH_PEND,
 375         HCI_CONN_ENCRYPT_PEND,
 376         HCI_CONN_RSWITCH_PEND,
 377         HCI_CONN_MODE_CHANGE_PEND,
 378         HCI_CONN_SCO_SETUP_PEND,
 379         HCI_CONN_LE_SMP_PEND,
 380 };
 381
 382 static inline void hci_conn_hash_init(struct hci_dev *hdev)
 383 {
 384         struct hci_conn_hash *h = &hdev->conn_hash;
 385         INIT_LIST_HEAD(&h->list);
 386         h->acl_num = 0;
 387         h->sco_num = 0;
 388         h->le_num = 0;
 389 }
 390
 391 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 392 {
 393         struct hci_conn_hash *h = &hdev->conn_hash;
 394         list_add_rcu(&c->list, &h->list);
 395         switch (c->type) {
 396         case ACL_LINK:
 397                 h->acl_num++;
 398                 break;
 399         case LE_LINK:
 400                 h->le_num++;
 401                 break;
 402         case SCO_LINK:
 403         case ESCO_LINK:
 404                 h->sco_num++;
 405                 break;
 406         }
 407 }
 408
 409 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 410 {
 411         struct hci_conn_hash *h = &hdev->conn_hash;
 412
 413         list_del_rcu(&c->list);
 414         synchronize_rcu();
 415
 416         switch (c->type) {
 417         case ACL_LINK:
 418                 h->acl_num--;
 419                 break;
 420         case LE_LINK:
 421                 h->le_num--;
 422                 break;
 423         case SCO_LINK:
 424         case ESCO_LINK:
 425                 h->sco_num--;
 426                 break;
 427         }
 428 }
 429
 430 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 431 {
 432         struct hci_conn_hash *h = &hdev->conn_hash;
 433         switch (type) {
 434         case ACL_LINK:
 435                 return h->acl_num;
 436         case LE_LINK:
 437                 return h->le_num;
 438         case SCO_LINK:
 439         case ESCO_LINK:
 440                 return h->sco_num;
 441         default:
 442                 return 0;
 443         }
 444 }
 445
 446 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 447                                                                 __u16 handle)
 448 {
 449         struct hci_conn_hash *h = &hdev->conn_hash;
 450         struct hci_conn  *c;
 451
 452         rcu_read_lock();
 453
 454         list_for_each_entry_rcu(c, &h->list, list) {
 455                 if (c->handle == handle) {
 456                         rcu_read_unlock();
 457                         return c;
 458                 }
 459         }
 460         rcu_read_unlock();
 461
 462         return NULL;
 463 }
 464
 465 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 466                                                         __u8 type, bdaddr_t *ba)
 467 {
 468         struct hci_conn_hash *h = &hdev->conn_hash;
 469         struct hci_conn  *c;
 470
 471         rcu_read_lock();
 472
 473         list_for_each_entry_rcu(c, &h->list, list) {
 474                 if (c->type == type && !bacmp(&c->dst, ba)) {
 475                         rcu_read_unlock();
 476                         return c;
 477                 }
 478         }
 479
 480         rcu_read_unlock();
 481
 482         return NULL;
 483 }
 484
 485 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 486                                                         __u8 type, __u16 state)
 487 {
 488         struct hci_conn_hash *h = &hdev->conn_hash;
 489         struct hci_conn  *c;
 490
 491         rcu_read_lock();
 492
 493         list_for_each_entry_rcu(c, &h->list, list) {
 494                 if (c->type == type && c->state == state) {
 495                         rcu_read_unlock();
 496                         return c;
 497                 }
 498         }
 499
 500         rcu_read_unlock();
 501
 502         return NULL;
 503 }
 504
 505 void hci_acl_connect(struct hci_conn *conn);
 506 void hci_acl_disconn(struct hci_conn *conn, __u8 reason);
 507 void hci_add_sco(struct hci_conn *conn, __u16 handle);
 508 void hci_setup_sync(struct hci_conn *conn, __u16 handle);
 509 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 510
 511 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst);
 512 int hci_conn_del(struct hci_conn *conn);
 513 void hci_conn_hash_flush(struct hci_dev *hdev);
 514 void hci_conn_check_pending(struct hci_dev *hdev);
 515
 516 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 517 int hci_chan_del(struct hci_chan *chan);
 518 void hci_chan_list_flush(struct hci_conn *conn);
 519
 520 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst,
 521                                                 __u8 sec_level, __u8 auth_type);
 522 int hci_conn_check_link_mode(struct hci_conn *conn);
 523 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 524 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 525 int hci_conn_change_link_key(struct hci_conn *conn);
 526 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 527
 528 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 529
 530 void hci_conn_hold_device(struct hci_conn *conn);
 531 void hci_conn_put_device(struct hci_conn *conn);
 532
 533 static inline void hci_conn_hold(struct hci_conn *conn)
 534 {
 535         atomic_inc(&conn->refcnt);
 536         cancel_delayed_work_sync(&conn->disc_work);
 537 }
 538
 539 static inline void hci_conn_put(struct hci_conn *conn)
 540 {
 541         if (atomic_dec_and_test(&conn->refcnt)) {
 542                 unsigned long timeo;
 543                 if (conn->type == ACL_LINK || conn->type == LE_LINK) {
 544                         del_timer(&conn->idle_timer);
 545                         if (conn->state == BT_CONNECTED) {
 546                                 timeo = msecs_to_jiffies(conn->disc_timeout);
 547                                 if (!conn->out)
 548                                         timeo *= 2;
 549                         } else {
 550                                 timeo = msecs_to_jiffies(10);
 551                         }
 552                 } else {
 553                         timeo = msecs_to_jiffies(10);
 554                 }
 555                 cancel_delayed_work_sync(&conn->disc_work);
 556                 queue_delayed_work(conn->hdev->workqueue,
 557                                         &conn->disc_work, jiffies + timeo);
 558         }
 559 }
 560
 561 /* ----- HCI Devices ----- */
 562 static inline void __hci_dev_put(struct hci_dev *d)
 563 {
 564         if (atomic_dec_and_test(&d->refcnt))
 565                 d->destruct(d);
 566 }
 567
 568 static inline void hci_dev_put(struct hci_dev *d)
 569 {
 570         __hci_dev_put(d);
 571         module_put(d->owner);
 572 }
 573
 574 static inline struct hci_dev *__hci_dev_hold(struct hci_dev *d)
 575 {
 576         atomic_inc(&d->refcnt);
 577         return d;
 578 }
 579
 580 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 581 {
 582         if (try_module_get(d->owner))
 583                 return __hci_dev_hold(d);
 584         return NULL;
 585 }
 586
 587 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 588 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 589
 590 struct hci_dev *hci_dev_get(int index);
 591 struct hci_dev *hci_get_route(bdaddr_t *src, bdaddr_t *dst);
 592
 593 struct hci_dev *hci_alloc_dev(void);
 594 void hci_free_dev(struct hci_dev *hdev);
 595 int hci_register_dev(struct hci_dev *hdev);
 596 void hci_unregister_dev(struct hci_dev *hdev);
 597 int hci_suspend_dev(struct hci_dev *hdev);
 598 int hci_resume_dev(struct hci_dev *hdev);
 599 int hci_dev_open(__u16 dev);
 600 int hci_dev_close(__u16 dev);
 601 int hci_dev_reset(__u16 dev);
 602 int hci_dev_reset_stat(__u16 dev);
 603 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 604 int hci_get_dev_list(void __user *arg);
 605 int hci_get_dev_info(void __user *arg);
 606 int hci_get_conn_list(void __user *arg);
 607 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 608 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 609 int hci_inquiry(void __user *arg);
 610
 611 struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr);
 612 int hci_blacklist_clear(struct hci_dev *hdev);
 613 int hci_blacklist_add(struct hci_dev *hdev, bdaddr_t *bdaddr);
 614 int hci_blacklist_del(struct hci_dev *hdev, bdaddr_t *bdaddr);
 615
 616 int hci_uuids_clear(struct hci_dev *hdev);
 617
 618 int hci_link_keys_clear(struct hci_dev *hdev);
 619 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 620 int hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn, int new_key,
 621                         bdaddr_t *bdaddr, u8 *val, u8 type, u8 pin_len);
 622 struct link_key *hci_find_ltk(struct hci_dev *hdev, __le16 ediv, u8 rand[8]);
 623 struct link_key *hci_find_link_key_type(struct hci_dev *hdev,
 624                                         bdaddr_t *bdaddr, u8 type);
 625 int hci_add_ltk(struct hci_dev *hdev, int new_key, bdaddr_t *bdaddr,
 626                         u8 key_size, __le16 ediv, u8 rand[8], u8 ltk[16]);
 627 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 628
 629 int hci_remote_oob_data_clear(struct hci_dev *hdev);
 630 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 631                                                         bdaddr_t *bdaddr);
 632 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *hash,
 633                                                                 u8 *randomizer);
 634 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr);
 635
 636 #define ADV_CLEAR_TIMEOUT (3*60*HZ) /* Three minutes */
 637 int hci_adv_entries_clear(struct hci_dev *hdev);
 638 struct adv_entry *hci_find_adv_entry(struct hci_dev *hdev, bdaddr_t *bdaddr);
 639 int hci_add_adv_entry(struct hci_dev *hdev,
 640                                         struct hci_ev_le_advertising_info *ev);
 641
 642 void hci_del_off_timer(struct hci_dev *hdev);
 643
 644 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 645
 646 int hci_recv_frame(struct sk_buff *skb);
 647 int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count);
 648 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 649
 650 void hci_init_sysfs(struct hci_dev *hdev);
 651 int hci_add_sysfs(struct hci_dev *hdev);
 652 void hci_del_sysfs(struct hci_dev *hdev);
 653 void hci_conn_init_sysfs(struct hci_conn *conn);
 654 void hci_conn_add_sysfs(struct hci_conn *conn);
 655 void hci_conn_del_sysfs(struct hci_conn *conn);
 656
 657 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->parent = (pdev))
 658
 659 /* ----- LMP capabilities ----- */
 660 #define lmp_rswitch_capable(dev)   ((dev)->features[0] & LMP_RSWITCH)
 661 #define lmp_encrypt_capable(dev)   ((dev)->features[0] & LMP_ENCRYPT)
 662 #define lmp_sniff_capable(dev)     ((dev)->features[0] & LMP_SNIFF)
 663 #define lmp_sniffsubr_capable(dev) ((dev)->features[5] & LMP_SNIFF_SUBR)
 664 #define lmp_esco_capable(dev)      ((dev)->features[3] & LMP_ESCO)
 665 #define lmp_ssp_capable(dev)       ((dev)->features[6] & LMP_SIMPLE_PAIR)
 666 #define lmp_no_flush_capable(dev)  ((dev)->features[6] & LMP_NO_FLUSH)
 667 #define lmp_le_capable(dev)        ((dev)->features[4] & LMP_LE)
 668
 669 /* ----- Extended LMP capabilities ----- */
 670 #define lmp_host_le_capable(dev)   ((dev)->extfeatures[0] & LMP_HOST_LE)
 671
 672 /* ----- HCI protocols ----- */
 673 struct hci_proto {
 674         char            *name;
 675         unsigned int    id;
 676         unsigned long   flags;
 677
 678         void            *priv;
 679
 680         int (*connect_ind)      (struct hci_dev *hdev, bdaddr_t *bdaddr,
 681                                                                 __u8 type);
 682         int (*connect_cfm)      (struct hci_conn *conn, __u8 status);
 683         int (*disconn_ind)      (struct hci_conn *conn);
 684         int (*disconn_cfm)      (struct hci_conn *conn, __u8 reason);
 685         int (*recv_acldata)     (struct hci_conn *conn, struct sk_buff *skb,
 686                                                                 __u16 flags);
 687         int (*recv_scodata)     (struct hci_conn *conn, struct sk_buff *skb);
 688         int (*security_cfm)     (struct hci_conn *conn, __u8 status,
 689                                                                 __u8 encrypt);
 690 };
 691
 692 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 693                                                                 __u8 type)
 694 {
 695         register struct hci_proto *hp;
 696         int mask = 0;
 697
 698         hp = hci_proto[HCI_PROTO_L2CAP];
 699         if (hp && hp->connect_ind)
 700                 mask |= hp->connect_ind(hdev, bdaddr, type);
 701
 702         hp = hci_proto[HCI_PROTO_SCO];
 703         if (hp && hp->connect_ind)
 704                 mask |= hp->connect_ind(hdev, bdaddr, type);
 705
 706         return mask;
 707 }
 708
 709 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
 710 {
 711         register struct hci_proto *hp;
 712
 713         hp = hci_proto[HCI_PROTO_L2CAP];
 714         if (hp && hp->connect_cfm)
 715                 hp->connect_cfm(conn, status);
 716
 717         hp = hci_proto[HCI_PROTO_SCO];
 718         if (hp && hp->connect_cfm)
 719                 hp->connect_cfm(conn, status);
 720
 721         if (conn->connect_cfm_cb)
 722                 conn->connect_cfm_cb(conn, status);
 723 }
 724
 725 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
 726 {
 727         register struct hci_proto *hp;
 728         int reason = HCI_ERROR_REMOTE_USER_TERM;
 729
 730         hp = hci_proto[HCI_PROTO_L2CAP];
 731         if (hp && hp->disconn_ind)
 732                 reason = hp->disconn_ind(conn);
 733
 734         hp = hci_proto[HCI_PROTO_SCO];
 735         if (hp && hp->disconn_ind)
 736                 reason = hp->disconn_ind(conn);
 737
 738         return reason;
 739 }
 740
 741 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
 742 {
 743         register struct hci_proto *hp;
 744
 745         hp = hci_proto[HCI_PROTO_L2CAP];
 746         if (hp && hp->disconn_cfm)
 747                 hp->disconn_cfm(conn, reason);
 748
 749         hp = hci_proto[HCI_PROTO_SCO];
 750         if (hp && hp->disconn_cfm)
 751                 hp->disconn_cfm(conn, reason);
 752
 753         if (conn->disconn_cfm_cb)
 754                 conn->disconn_cfm_cb(conn, reason);
 755 }
 756
 757 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
 758 {
 759         register struct hci_proto *hp;
 760         __u8 encrypt;
 761
 762         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 763                 return;
 764
 765         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 766
 767         hp = hci_proto[HCI_PROTO_L2CAP];
 768         if (hp && hp->security_cfm)
 769                 hp->security_cfm(conn, status, encrypt);
 770
 771         hp = hci_proto[HCI_PROTO_SCO];
 772         if (hp && hp->security_cfm)
 773                 hp->security_cfm(conn, status, encrypt);
 774
 775         if (conn->security_cfm_cb)
 776                 conn->security_cfm_cb(conn, status);
 777 }
 778
 779 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
 780                                                                 __u8 encrypt)
 781 {
 782         register struct hci_proto *hp;
 783
 784         hp = hci_proto[HCI_PROTO_L2CAP];
 785         if (hp && hp->security_cfm)
 786                 hp->security_cfm(conn, status, encrypt);
 787
 788         hp = hci_proto[HCI_PROTO_SCO];
 789         if (hp && hp->security_cfm)
 790                 hp->security_cfm(conn, status, encrypt);
 791
 792         if (conn->security_cfm_cb)
 793                 conn->security_cfm_cb(conn, status);
 794 }
 795
 796 int hci_register_proto(struct hci_proto *hproto);
 797 int hci_unregister_proto(struct hci_proto *hproto);
 798
 799 /* ----- HCI callbacks ----- */
 800 struct hci_cb {
 801         struct list_head list;
 802
 803         char *name;
 804
 805         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
 806                                                                 __u8 encrypt);
 807         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
 808         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
 809 };
 810
 811 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
 812 {
 813         struct list_head *p;
 814         __u8 encrypt;
 815
 816         hci_proto_auth_cfm(conn, status);
 817
 818         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->pend))
 819                 return;
 820
 821         encrypt = (conn->link_mode & HCI_LM_ENCRYPT) ? 0x01 : 0x00;
 822
 823         read_lock_bh(&hci_cb_list_lock);
 824         list_for_each(p, &hci_cb_list) {
 825                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 826                 if (cb->security_cfm)
 827                         cb->security_cfm(conn, status, encrypt);
 828         }
 829         read_unlock_bh(&hci_cb_list_lock);
 830 }
 831
 832 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
 833                                                                 __u8 encrypt)
 834 {
 835         struct list_head *p;
 836
 837         if (conn->sec_level == BT_SECURITY_SDP)
 838                 conn->sec_level = BT_SECURITY_LOW;
 839
 840         if (conn->pending_sec_level > conn->sec_level)
 841                 conn->sec_level = conn->pending_sec_level;
 842
 843         hci_proto_encrypt_cfm(conn, status, encrypt);
 844
 845         read_lock_bh(&hci_cb_list_lock);
 846         list_for_each(p, &hci_cb_list) {
 847                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 848                 if (cb->security_cfm)
 849                         cb->security_cfm(conn, status, encrypt);
 850         }
 851         read_unlock_bh(&hci_cb_list_lock);
 852 }
 853
 854 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
 855 {
 856         struct list_head *p;
 857
 858         read_lock_bh(&hci_cb_list_lock);
 859         list_for_each(p, &hci_cb_list) {
 860                 struct hci_cb *cb = list_entry(p, struct hci_cb, list);
 861                 if (cb->key_change_cfm)
 862                         cb->key_change_cfm(conn, status);
 863         }
 864         read_unlock_bh(&hci_cb_list_lock);
 865 }
 866
 867 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
 868                                                                 __u8 role)
 869 {
 870         struct list_head *p;
 871
 872         read_lock_bh(&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->role_switch_cfm)
 876                         cb->role_switch_cfm(conn, status, role);
 877         }
 878         read_unlock_bh(&hci_cb_list_lock);
 879 }
 880
 881 int hci_register_cb(struct hci_cb *hcb);
 882 int hci_unregister_cb(struct hci_cb *hcb);
 883
 884 int hci_register_notifier(struct notifier_block *nb);
 885 int hci_unregister_notifier(struct notifier_block *nb);
 886
 887 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen, void *param);
 888 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
 889 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
 890
 891 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
 892
 893 void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data);
 894
 895 /* ----- HCI Sockets ----- */
 896 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb,
 897                                                         struct sock *skip_sk);
 898
 899 /* Management interface */
 900 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
 901 int mgmt_index_added(struct hci_dev *hdev);
 902 int mgmt_index_removed(struct hci_dev *hdev);
 903 int mgmt_powered(struct hci_dev *hdev, u8 powered);
 904 int mgmt_discoverable(struct hci_dev *hdev, u8 discoverable);
 905 int mgmt_connectable(struct hci_dev *hdev, u8 connectable);
 906 int mgmt_write_scan_failed(struct hci_dev *hdev, u8 scan, u8 status);
 907 int mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
 908                                                                 u8 persistent);
 909 int mgmt_connected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 910                                                                 u8 addr_type);
 911 int mgmt_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 912                                                                 u8 addr_type);
 913 int mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
 914 int mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 915                                                 u8 addr_type, u8 status);
 916 int mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
 917 int mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 918                                                                 u8 status);
 919 int mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 920                                                                 u8 status);
 921 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
 922                                                 __le32 value, u8 confirm_hint);
 923 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 924                                                                 u8 status);
 925 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev,
 926                                                 bdaddr_t *bdaddr, u8 status);
 927 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr);
 928 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
 929                                                                 u8 status);
 930 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev,
 931                                                 bdaddr_t *bdaddr, u8 status);
 932 int mgmt_auth_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 status);
 933 int mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
 934 int mgmt_read_local_oob_data_reply_complete(struct hci_dev *hdev, u8 *hash,
 935                                                 u8 *randomizer, u8 status);
 936 int mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
 937                                 u8 addr_type, u8 *dev_class, s8 rssi, u8 *eir);
 938 int mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 *name);
 939 int mgmt_start_discovery_failed(struct hci_dev *hdev, u8 status);
 940 int mgmt_stop_discovery_failed(struct hci_dev *hdev, u8 status);
 941 int mgmt_discovering(struct hci_dev *hdev, u8 discovering);
 942 int mgmt_device_blocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 943 int mgmt_device_unblocked(struct hci_dev *hdev, bdaddr_t *bdaddr);
 944
 945 /* HCI info for socket */
 946 #define hci_pi(sk) ((struct hci_pinfo *) sk)
 947
 948 /* HCI socket flags */
 949 #define HCI_PI_MGMT_INIT        0
 950
 951 struct hci_pinfo {
 952         struct bt_sock    bt;
 953         struct hci_dev    *hdev;
 954         struct hci_filter filter;
 955         __u32             cmsg_mask;
 956         unsigned short   channel;
 957         unsigned long     flags;
 958 };
 959
 960 /* HCI security filter */
 961 #define HCI_SFLT_MAX_OGF  5
 962
 963 struct hci_sec_filter {
 964         __u32 type_mask;
 965         __u32 event_mask[2];
 966         __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4];
 967 };
 968
 969 /* ----- HCI requests ----- */
 970 #define HCI_REQ_DONE      0
 971 #define HCI_REQ_PEND      1
 972 #define HCI_REQ_CANCELED  2
 973
 974 #define hci_req_lock(d)         mutex_lock(&d->req_lock)
 975 #define hci_req_unlock(d)       mutex_unlock(&d->req_lock)
 976
 977 void hci_req_complete(struct hci_dev *hdev, __u16 cmd, int result);
 978
 979 void hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max,
 980                                         u16 latency, u16 to_multiplier);
 981 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __u8 rand[8],
 982                                                         __u8 ltk[16]);
 983 void hci_le_ltk_reply(struct hci_conn *conn, u8 ltk[16]);
 984 void hci_le_ltk_neg_reply(struct hci_conn *conn);
 985
 986 int hci_do_inquiry(struct hci_dev *hdev, u8 length);
 987 int hci_cancel_inquiry(struct hci_dev *hdev);
 988
 989 #endif /* __HCI_CORE_H */