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 #include <net/bluetooth/hci_sock.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         bdaddr_t                last_adv_addr;
  73         u8                      last_adv_addr_type;
  74         s8                      last_adv_rssi;
  75         u32                     last_adv_flags;
  76         u8                      last_adv_data[HCI_MAX_AD_LENGTH];
  77         u8                      last_adv_data_len;
  78         bool                    report_invalid_rssi;
  79         s8                      rssi;
  80         u16                     uuid_count;
  81         u8                      (*uuids)[16];
  82 };
  83
  84 struct hci_conn_hash {
  85         struct list_head list;
  86         unsigned int     acl_num;
  87         unsigned int     amp_num;
  88         unsigned int     sco_num;
  89         unsigned int     le_num;
  90         unsigned int     le_num_slave;
  91 };
  92
  93 struct bdaddr_list {
  94         struct list_head list;
  95         bdaddr_t bdaddr;
  96         u8 bdaddr_type;
  97 };
  98
  99 struct bt_uuid {
 100         struct list_head list;
 101         u8 uuid[16];
 102         u8 size;
 103         u8 svc_hint;
 104 };
 105
 106 struct smp_csrk {
 107         bdaddr_t bdaddr;
 108         u8 bdaddr_type;
 109         u8 master;
 110         u8 val[16];
 111 };
 112
 113 struct smp_ltk {
 114         struct list_head list;
 115         struct rcu_head rcu;
 116         bdaddr_t bdaddr;
 117         u8 bdaddr_type;
 118         u8 authenticated;
 119         u8 type;
 120         u8 enc_size;
 121         __le16 ediv;
 122         __le64 rand;
 123         u8 val[16];
 124 };
 125
 126 struct smp_irk {
 127         struct list_head list;
 128         struct rcu_head rcu;
 129         bdaddr_t rpa;
 130         bdaddr_t bdaddr;
 131         u8 addr_type;
 132         u8 val[16];
 133 };
 134
 135 struct link_key {
 136         struct list_head list;
 137         struct rcu_head rcu;
 138         bdaddr_t bdaddr;
 139         u8 type;
 140         u8 val[HCI_LINK_KEY_SIZE];
 141         u8 pin_len;
 142 };
 143
 144 struct oob_data {
 145         struct list_head list;
 146         bdaddr_t bdaddr;
 147         u8 bdaddr_type;
 148         u8 hash192[16];
 149         u8 rand192[16];
 150         u8 hash256[16];
 151         u8 rand256[16];
 152 };
 153
 154 #define HCI_MAX_SHORT_NAME_LENGTH       10
 155
 156 /* Default LE RPA expiry time, 15 minutes */
 157 #define HCI_DEFAULT_RPA_TIMEOUT         (15 * 60)
 158
 159 /* Default min/max age of connection information (1s/3s) */
 160 #define DEFAULT_CONN_INFO_MIN_AGE       1000
 161 #define DEFAULT_CONN_INFO_MAX_AGE       3000
 162
 163 struct amp_assoc {
 164         __u16   len;
 165         __u16   offset;
 166         __u16   rem_len;
 167         __u16   len_so_far;
 168         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
 169 };
 170
 171 #define HCI_MAX_PAGES   3
 172
 173 #define NUM_REASSEMBLY 4
 174 struct hci_dev {
 175         struct list_head list;
 176         struct mutex    lock;
 177
 178         char            name[8];
 179         unsigned long   flags;
 180         __u16           id;
 181         __u8            bus;
 182         __u8            dev_type;
 183         bdaddr_t        bdaddr;
 184         bdaddr_t        setup_addr;
 185         bdaddr_t        public_addr;
 186         bdaddr_t        random_addr;
 187         bdaddr_t        static_addr;
 188         __u8            adv_addr_type;
 189         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 190         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 191         __u8            eir[HCI_MAX_EIR_LENGTH];
 192         __u8            dev_class[3];
 193         __u8            major_class;
 194         __u8            minor_class;
 195         __u8            max_page;
 196         __u8            features[HCI_MAX_PAGES][8];
 197         __u8            le_features[8];
 198         __u8            le_white_list_size;
 199         __u8            le_states[8];
 200         __u8            commands[64];
 201         __u8            hci_ver;
 202         __u16           hci_rev;
 203         __u8            lmp_ver;
 204         __u16           manufacturer;
 205         __u16           lmp_subver;
 206         __u16           voice_setting;
 207         __u8            num_iac;
 208         __u8            io_capability;
 209         __s8            inq_tx_power;
 210         __u16           page_scan_interval;
 211         __u16           page_scan_window;
 212         __u8            page_scan_type;
 213         __u8            le_adv_channel_map;
 214         __u16           le_adv_min_interval;
 215         __u16           le_adv_max_interval;
 216         __u8            le_scan_type;
 217         __u16           le_scan_interval;
 218         __u16           le_scan_window;
 219         __u16           le_conn_min_interval;
 220         __u16           le_conn_max_interval;
 221         __u16           le_conn_latency;
 222         __u16           le_supv_timeout;
 223         __u16           le_def_tx_len;
 224         __u16           le_def_tx_time;
 225         __u16           le_max_tx_len;
 226         __u16           le_max_tx_time;
 227         __u16           le_max_rx_len;
 228         __u16           le_max_rx_time;
 229         __u16           discov_interleaved_timeout;
 230         __u16           conn_info_min_age;
 231         __u16           conn_info_max_age;
 232         __u8            ssp_debug_mode;
 233         __u32           clock;
 234
 235         __u16           devid_source;
 236         __u16           devid_vendor;
 237         __u16           devid_product;
 238         __u16           devid_version;
 239
 240         __u16           pkt_type;
 241         __u16           esco_type;
 242         __u16           link_policy;
 243         __u16           link_mode;
 244
 245         __u32           idle_timeout;
 246         __u16           sniff_min_interval;
 247         __u16           sniff_max_interval;
 248
 249         __u8            amp_status;
 250         __u32           amp_total_bw;
 251         __u32           amp_max_bw;
 252         __u32           amp_min_latency;
 253         __u32           amp_max_pdu;
 254         __u8            amp_type;
 255         __u16           amp_pal_cap;
 256         __u16           amp_assoc_size;
 257         __u32           amp_max_flush_to;
 258         __u32           amp_be_flush_to;
 259
 260         struct amp_assoc        loc_assoc;
 261
 262         __u8            flow_ctl_mode;
 263
 264         unsigned int    auto_accept_delay;
 265
 266         unsigned long   quirks;
 267
 268         atomic_t        cmd_cnt;
 269         unsigned int    acl_cnt;
 270         unsigned int    sco_cnt;
 271         unsigned int    le_cnt;
 272
 273         unsigned int    acl_mtu;
 274         unsigned int    sco_mtu;
 275         unsigned int    le_mtu;
 276         unsigned int    acl_pkts;
 277         unsigned int    sco_pkts;
 278         unsigned int    le_pkts;
 279
 280         __u16           block_len;
 281         __u16           block_mtu;
 282         __u16           num_blocks;
 283         __u16           block_cnt;
 284
 285         unsigned long   acl_last_tx;
 286         unsigned long   sco_last_tx;
 287         unsigned long   le_last_tx;
 288
 289         struct workqueue_struct *workqueue;
 290         struct workqueue_struct *req_workqueue;
 291
 292         struct work_struct      power_on;
 293         struct delayed_work     power_off;
 294
 295         __u16                   discov_timeout;
 296         struct delayed_work     discov_off;
 297
 298         struct delayed_work     service_cache;
 299
 300         struct delayed_work     cmd_timer;
 301
 302         struct work_struct      rx_work;
 303         struct work_struct      cmd_work;
 304         struct work_struct      tx_work;
 305
 306         struct sk_buff_head     rx_q;
 307         struct sk_buff_head     raw_q;
 308         struct sk_buff_head     cmd_q;
 309
 310         struct sk_buff          *recv_evt;
 311         struct sk_buff          *sent_cmd;
 312         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 313
 314         struct mutex            req_lock;
 315         wait_queue_head_t       req_wait_q;
 316         __u32                   req_status;
 317         __u32                   req_result;
 318
 319         void                    *smp_data;
 320         void                    *smp_bredr_data;
 321
 322         struct discovery_state  discovery;
 323         struct hci_conn_hash    conn_hash;
 324
 325         struct list_head        mgmt_pending;
 326         struct list_head        blacklist;
 327         struct list_head        whitelist;
 328         struct list_head        uuids;
 329         struct list_head        link_keys;
 330         struct list_head        long_term_keys;
 331         struct list_head        identity_resolving_keys;
 332         struct list_head        remote_oob_data;
 333         struct list_head        le_white_list;
 334         struct list_head        le_conn_params;
 335         struct list_head        pend_le_conns;
 336         struct list_head        pend_le_reports;
 337
 338         struct hci_dev_stats    stat;
 339
 340         atomic_t                promisc;
 341
 342         struct dentry           *debugfs;
 343
 344         struct device           dev;
 345
 346         struct rfkill           *rfkill;
 347
 348         unsigned long           dbg_flags;
 349         unsigned long           dev_flags;
 350
 351         struct delayed_work     le_scan_disable;
 352
 353         __s8                    adv_tx_power;
 354         __u8                    adv_data[HCI_MAX_AD_LENGTH];
 355         __u8                    adv_data_len;
 356         __u8                    scan_rsp_data[HCI_MAX_AD_LENGTH];
 357         __u8                    scan_rsp_data_len;
 358
 359         __u8                    irk[16];
 360         __u32                   rpa_timeout;
 361         struct delayed_work     rpa_expired;
 362         bdaddr_t                rpa;
 363
 364         int (*open)(struct hci_dev *hdev);
 365         int (*close)(struct hci_dev *hdev);
 366         int (*flush)(struct hci_dev *hdev);
 367         int (*setup)(struct hci_dev *hdev);
 368         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 369         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 370         int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 371 };
 372
 373 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 374
 375 struct hci_conn {
 376         struct list_head list;
 377
 378         atomic_t        refcnt;
 379
 380         bdaddr_t        dst;
 381         __u8            dst_type;
 382         bdaddr_t        src;
 383         __u8            src_type;
 384         bdaddr_t        init_addr;
 385         __u8            init_addr_type;
 386         bdaddr_t        resp_addr;
 387         __u8            resp_addr_type;
 388         __u16           handle;
 389         __u16           state;
 390         __u8            mode;
 391         __u8            type;
 392         __u8            role;
 393         bool            out;
 394         __u8            attempt;
 395         __u8            dev_class[3];
 396         __u8            features[HCI_MAX_PAGES][8];
 397         __u16           pkt_type;
 398         __u16           link_policy;
 399         __u8            key_type;
 400         __u8            auth_type;
 401         __u8            sec_level;
 402         __u8            pending_sec_level;
 403         __u8            pin_length;
 404         __u8            enc_key_size;
 405         __u8            io_capability;
 406         __u32           passkey_notify;
 407         __u8            passkey_entered;
 408         __u16           disc_timeout;
 409         __u16           conn_timeout;
 410         __u16           setting;
 411         __u16           le_conn_min_interval;
 412         __u16           le_conn_max_interval;
 413         __u16           le_conn_interval;
 414         __u16           le_conn_latency;
 415         __u16           le_supv_timeout;
 416         __u8            le_adv_data[HCI_MAX_AD_LENGTH];
 417         __u8            le_adv_data_len;
 418         __s8            rssi;
 419         __s8            tx_power;
 420         __s8            max_tx_power;
 421         unsigned long   flags;
 422
 423         __u32           clock;
 424         __u16           clock_accuracy;
 425
 426         unsigned long   conn_info_timestamp;
 427
 428         __u8            remote_cap;
 429         __u8            remote_auth;
 430         __u8            remote_id;
 431
 432         unsigned int    sent;
 433
 434         struct sk_buff_head data_q;
 435         struct list_head chan_list;
 436
 437         struct delayed_work disc_work;
 438         struct delayed_work auto_accept_work;
 439         struct delayed_work idle_work;
 440         struct delayed_work le_conn_timeout;
 441
 442         struct device   dev;
 443         struct dentry   *debugfs;
 444
 445         struct hci_dev  *hdev;
 446         void            *l2cap_data;
 447         void            *sco_data;
 448         struct amp_mgr  *amp_mgr;
 449
 450         struct hci_conn *link;
 451
 452         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 453         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 454         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 455 };
 456
 457 struct hci_chan {
 458         struct list_head list;
 459         __u16 handle;
 460         struct hci_conn *conn;
 461         struct sk_buff_head data_q;
 462         unsigned int    sent;
 463         __u8            state;
 464 };
 465
 466 struct hci_conn_params {
 467         struct list_head list;
 468         struct list_head action;
 469
 470         bdaddr_t addr;
 471         u8 addr_type;
 472
 473         u16 conn_min_interval;
 474         u16 conn_max_interval;
 475         u16 conn_latency;
 476         u16 supervision_timeout;
 477
 478         enum {
 479                 HCI_AUTO_CONN_DISABLED,
 480                 HCI_AUTO_CONN_REPORT,
 481                 HCI_AUTO_CONN_DIRECT,
 482                 HCI_AUTO_CONN_ALWAYS,
 483                 HCI_AUTO_CONN_LINK_LOSS,
 484         } auto_connect;
 485
 486         struct hci_conn *conn;
 487 };
 488
 489 extern struct list_head hci_dev_list;
 490 extern struct list_head hci_cb_list;
 491 extern rwlock_t hci_dev_list_lock;
 492 extern rwlock_t hci_cb_list_lock;
 493
 494 /* ----- HCI interface to upper protocols ----- */
 495 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 496 void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 497 int l2cap_disconn_ind(struct hci_conn *hcon);
 498 void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 499 int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 500 int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 501
 502 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 503 void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 504 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 505 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 506
 507 /* ----- Inquiry cache ----- */
 508 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 509 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 510
 511 static inline void discovery_init(struct hci_dev *hdev)
 512 {
 513         hdev->discovery.state = DISCOVERY_STOPPED;
 514         INIT_LIST_HEAD(&hdev->discovery.all);
 515         INIT_LIST_HEAD(&hdev->discovery.unknown);
 516         INIT_LIST_HEAD(&hdev->discovery.resolve);
 517         hdev->discovery.report_invalid_rssi = true;
 518         hdev->discovery.rssi = HCI_RSSI_INVALID;
 519 }
 520
 521 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 522 {
 523         hdev->discovery.report_invalid_rssi = true;
 524         hdev->discovery.rssi = HCI_RSSI_INVALID;
 525         hdev->discovery.uuid_count = 0;
 526         kfree(hdev->discovery.uuids);
 527         hdev->discovery.uuids = NULL;
 528 }
 529
 530 bool hci_discovery_active(struct hci_dev *hdev);
 531
 532 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 533
 534 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 535 {
 536         return list_empty(&hdev->discovery.all);
 537 }
 538
 539 static inline long inquiry_cache_age(struct hci_dev *hdev)
 540 {
 541         struct discovery_state *c = &hdev->discovery;
 542         return jiffies - c->timestamp;
 543 }
 544
 545 static inline long inquiry_entry_age(struct inquiry_entry *e)
 546 {
 547         return jiffies - e->timestamp;
 548 }
 549
 550 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 551                                                bdaddr_t *bdaddr);
 552 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 553                                                        bdaddr_t *bdaddr);
 554 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 555                                                        bdaddr_t *bdaddr,
 556                                                        int state);
 557 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 558                                       struct inquiry_entry *ie);
 559 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 560                              bool name_known);
 561 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 562
 563 /* ----- HCI Connections ----- */
 564 enum {
 565         HCI_CONN_AUTH_PEND,
 566         HCI_CONN_REAUTH_PEND,
 567         HCI_CONN_ENCRYPT_PEND,
 568         HCI_CONN_RSWITCH_PEND,
 569         HCI_CONN_MODE_CHANGE_PEND,
 570         HCI_CONN_SCO_SETUP_PEND,
 571         HCI_CONN_MGMT_CONNECTED,
 572         HCI_CONN_SSP_ENABLED,
 573         HCI_CONN_SC_ENABLED,
 574         HCI_CONN_AES_CCM,
 575         HCI_CONN_POWER_SAVE,
 576         HCI_CONN_REMOTE_OOB,
 577         HCI_CONN_FLUSH_KEY,
 578         HCI_CONN_ENCRYPT,
 579         HCI_CONN_AUTH,
 580         HCI_CONN_SECURE,
 581         HCI_CONN_FIPS,
 582         HCI_CONN_STK_ENCRYPT,
 583         HCI_CONN_AUTH_INITIATOR,
 584         HCI_CONN_DROP,
 585         HCI_CONN_PARAM_REMOVAL_PEND,
 586         HCI_CONN_NEW_LINK_KEY,
 587 };
 588
 589 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 590 {
 591         struct hci_dev *hdev = conn->hdev;
 592         return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 593                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 594 }
 595
 596 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
 597 {
 598         struct hci_dev *hdev = conn->hdev;
 599         return test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
 600                test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
 601 }
 602
 603 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 604 {
 605         struct hci_conn_hash *h = &hdev->conn_hash;
 606         list_add_rcu(&c->list, &h->list);
 607         switch (c->type) {
 608         case ACL_LINK:
 609                 h->acl_num++;
 610                 break;
 611         case AMP_LINK:
 612                 h->amp_num++;
 613                 break;
 614         case LE_LINK:
 615                 h->le_num++;
 616                 if (c->role == HCI_ROLE_SLAVE)
 617                         h->le_num_slave++;
 618                 break;
 619         case SCO_LINK:
 620         case ESCO_LINK:
 621                 h->sco_num++;
 622                 break;
 623         }
 624 }
 625
 626 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 627 {
 628         struct hci_conn_hash *h = &hdev->conn_hash;
 629
 630         list_del_rcu(&c->list);
 631         synchronize_rcu();
 632
 633         switch (c->type) {
 634         case ACL_LINK:
 635                 h->acl_num--;
 636                 break;
 637         case AMP_LINK:
 638                 h->amp_num--;
 639                 break;
 640         case LE_LINK:
 641                 h->le_num--;
 642                 if (c->role == HCI_ROLE_SLAVE)
 643                         h->le_num_slave--;
 644                 break;
 645         case SCO_LINK:
 646         case ESCO_LINK:
 647                 h->sco_num--;
 648                 break;
 649         }
 650 }
 651
 652 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 653 {
 654         struct hci_conn_hash *h = &hdev->conn_hash;
 655         switch (type) {
 656         case ACL_LINK:
 657                 return h->acl_num;
 658         case AMP_LINK:
 659                 return h->amp_num;
 660         case LE_LINK:
 661                 return h->le_num;
 662         case SCO_LINK:
 663         case ESCO_LINK:
 664                 return h->sco_num;
 665         default:
 666                 return 0;
 667         }
 668 }
 669
 670 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
 671 {
 672         struct hci_conn_hash *c = &hdev->conn_hash;
 673
 674         return c->acl_num + c->amp_num + c->sco_num + c->le_num;
 675 }
 676
 677 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
 678 {
 679         struct hci_conn_hash *h = &hdev->conn_hash;
 680         struct hci_conn *c;
 681         __u8 type = INVALID_LINK;
 682
 683         rcu_read_lock();
 684
 685         list_for_each_entry_rcu(c, &h->list, list) {
 686                 if (c->handle == handle) {
 687                         type = c->type;
 688                         break;
 689                 }
 690         }
 691
 692         rcu_read_unlock();
 693
 694         return type;
 695 }
 696
 697 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 698                                                                 __u16 handle)
 699 {
 700         struct hci_conn_hash *h = &hdev->conn_hash;
 701         struct hci_conn  *c;
 702
 703         rcu_read_lock();
 704
 705         list_for_each_entry_rcu(c, &h->list, list) {
 706                 if (c->handle == handle) {
 707                         rcu_read_unlock();
 708                         return c;
 709                 }
 710         }
 711         rcu_read_unlock();
 712
 713         return NULL;
 714 }
 715
 716 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 717                                                         __u8 type, bdaddr_t *ba)
 718 {
 719         struct hci_conn_hash *h = &hdev->conn_hash;
 720         struct hci_conn  *c;
 721
 722         rcu_read_lock();
 723
 724         list_for_each_entry_rcu(c, &h->list, list) {
 725                 if (c->type == type && !bacmp(&c->dst, ba)) {
 726                         rcu_read_unlock();
 727                         return c;
 728                 }
 729         }
 730
 731         rcu_read_unlock();
 732
 733         return NULL;
 734 }
 735
 736 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 737                                                         __u8 type, __u16 state)
 738 {
 739         struct hci_conn_hash *h = &hdev->conn_hash;
 740         struct hci_conn  *c;
 741
 742         rcu_read_lock();
 743
 744         list_for_each_entry_rcu(c, &h->list, list) {
 745                 if (c->type == type && c->state == state) {
 746                         rcu_read_unlock();
 747                         return c;
 748                 }
 749         }
 750
 751         rcu_read_unlock();
 752
 753         return NULL;
 754 }
 755
 756 int hci_disconnect(struct hci_conn *conn, __u8 reason);
 757 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 758 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 759
 760 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
 761                               u8 role);
 762 int hci_conn_del(struct hci_conn *conn);
 763 void hci_conn_hash_flush(struct hci_dev *hdev);
 764 void hci_conn_check_pending(struct hci_dev *hdev);
 765
 766 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 767 void hci_chan_del(struct hci_chan *chan);
 768 void hci_chan_list_flush(struct hci_conn *conn);
 769 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 770
 771 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 772                                 u8 dst_type, u8 sec_level, u16 conn_timeout,
 773                                 u8 role);
 774 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
 775                                  u8 sec_level, u8 auth_type);
 776 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 777                                  __u16 setting);
 778 int hci_conn_check_link_mode(struct hci_conn *conn);
 779 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 780 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
 781                       bool initiator);
 782 int hci_conn_change_link_key(struct hci_conn *conn);
 783 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 784
 785 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 786
 787 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
 788
 789 /*
 790  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 791  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 792  * working or anything else. They just guarantee that the object is available
 793  * and can be dereferenced. So you can use its locks, local variables and any
 794  * other constant data.
 795  * Before accessing runtime data, you _must_ lock the object and then check that
 796  * it is still running. As soon as you release the locks, the connection might
 797  * get dropped, though.
 798  *
 799  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 800  * how long the underlying connection is held. So every channel that runs on the
 801  * hci_conn object calls this to prevent the connection from disappearing. As
 802  * long as you hold a device, you must also guarantee that you have a valid
 803  * reference to the device via hci_conn_get() (or the initial reference from
 804  * hci_conn_add()).
 805  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 806  * break because nobody cares for that. But this means, we cannot use
 807  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 808  */
 809
 810 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
 811 {
 812         get_device(&conn->dev);
 813         return conn;
 814 }
 815
 816 static inline void hci_conn_put(struct hci_conn *conn)
 817 {
 818         put_device(&conn->dev);
 819 }
 820
 821 static inline void hci_conn_hold(struct hci_conn *conn)
 822 {
 823         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 824
 825         atomic_inc(&conn->refcnt);
 826         cancel_delayed_work(&conn->disc_work);
 827 }
 828
 829 static inline void hci_conn_drop(struct hci_conn *conn)
 830 {
 831         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 832
 833         if (atomic_dec_and_test(&conn->refcnt)) {
 834                 unsigned long timeo;
 835
 836                 switch (conn->type) {
 837                 case ACL_LINK:
 838                 case LE_LINK:
 839                         cancel_delayed_work(&conn->idle_work);
 840                         if (conn->state == BT_CONNECTED) {
 841                                 timeo = conn->disc_timeout;
 842                                 if (!conn->out)
 843                                         timeo *= 2;
 844                         } else {
 845                                 timeo = 0;
 846                         }
 847                         break;
 848
 849                 case AMP_LINK:
 850                         timeo = conn->disc_timeout;
 851                         break;
 852
 853                 default:
 854                         timeo = 0;
 855                         break;
 856                 }
 857
 858                 cancel_delayed_work(&conn->disc_work);
 859                 queue_delayed_work(conn->hdev->workqueue,
 860                                    &conn->disc_work, timeo);
 861         }
 862 }
 863
 864 /* ----- HCI Devices ----- */
 865 static inline void hci_dev_put(struct hci_dev *d)
 866 {
 867         BT_DBG("%s orig refcnt %d", d->name,
 868                atomic_read(&d->dev.kobj.kref.refcount));
 869
 870         put_device(&d->dev);
 871 }
 872
 873 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 874 {
 875         BT_DBG("%s orig refcnt %d", d->name,
 876                atomic_read(&d->dev.kobj.kref.refcount));
 877
 878         get_device(&d->dev);
 879         return d;
 880 }
 881
 882 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 883 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 884
 885 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 886 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 887
 888 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 889 {
 890         return dev_get_drvdata(&hdev->dev);
 891 }
 892
 893 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 894 {
 895         dev_set_drvdata(&hdev->dev, data);
 896 }
 897
 898 struct hci_dev *hci_dev_get(int index);
 899 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
 900
 901 struct hci_dev *hci_alloc_dev(void);
 902 void hci_free_dev(struct hci_dev *hdev);
 903 int hci_register_dev(struct hci_dev *hdev);
 904 void hci_unregister_dev(struct hci_dev *hdev);
 905 int hci_suspend_dev(struct hci_dev *hdev);
 906 int hci_resume_dev(struct hci_dev *hdev);
 907 int hci_reset_dev(struct hci_dev *hdev);
 908 int hci_dev_open(__u16 dev);
 909 int hci_dev_close(__u16 dev);
 910 int hci_dev_reset(__u16 dev);
 911 int hci_dev_reset_stat(__u16 dev);
 912 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 913 int hci_get_dev_list(void __user *arg);
 914 int hci_get_dev_info(void __user *arg);
 915 int hci_get_conn_list(void __user *arg);
 916 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 917 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 918 int hci_inquiry(void __user *arg);
 919
 920 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
 921                                            bdaddr_t *bdaddr, u8 type);
 922 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
 923 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
 924 void hci_bdaddr_list_clear(struct list_head *list);
 925
 926 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
 927                                                bdaddr_t *addr, u8 addr_type);
 928 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
 929                                             bdaddr_t *addr, u8 addr_type);
 930 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
 931 void hci_conn_params_clear_all(struct hci_dev *hdev);
 932 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
 933
 934 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
 935                                                   bdaddr_t *addr,
 936                                                   u8 addr_type);
 937
 938 void hci_uuids_clear(struct hci_dev *hdev);
 939
 940 void hci_link_keys_clear(struct hci_dev *hdev);
 941 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 942 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
 943                                   bdaddr_t *bdaddr, u8 *val, u8 type,
 944                                   u8 pin_len, bool *persistent);
 945 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
 946                             u8 addr_type, u8 type, u8 authenticated,
 947                             u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
 948 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
 949                              u8 addr_type, u8 role);
 950 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
 951 void hci_smp_ltks_clear(struct hci_dev *hdev);
 952 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 953
 954 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
 955 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 956                                      u8 addr_type);
 957 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
 958                             u8 addr_type, u8 val[16], bdaddr_t *rpa);
 959 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
 960 void hci_smp_irks_clear(struct hci_dev *hdev);
 961
 962 void hci_remote_oob_data_clear(struct hci_dev *hdev);
 963 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 964                                           bdaddr_t *bdaddr, u8 bdaddr_type);
 965 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
 966                             u8 bdaddr_type, u8 *hash192, u8 *rand192,
 967                             u8 *hash256, u8 *rand256);
 968 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
 969                                u8 bdaddr_type);
 970
 971 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 972
 973 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
 974 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 975
 976 void hci_init_sysfs(struct hci_dev *hdev);
 977 void hci_conn_init_sysfs(struct hci_conn *conn);
 978 void hci_conn_add_sysfs(struct hci_conn *conn);
 979 void hci_conn_del_sysfs(struct hci_conn *conn);
 980
 981 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
 982
 983 /* ----- LMP capabilities ----- */
 984 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
 985 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
 986 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
 987 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
 988 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
 989 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
 990 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
 991 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
 992 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
 993 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
 994 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
 995 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
 996 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
 997 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
 998 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
 999 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1000 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1001 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1002 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1003
1004 /* ----- Extended LMP capabilities ----- */
1005 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1006 #define lmp_csb_slave_capable(dev)  ((dev)->features[2][0] & LMP_CSB_SLAVE)
1007 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1008 #define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1009 #define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1010 #define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1011
1012 /* ----- Host capabilities ----- */
1013 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1014 #define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1015 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1016 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1017
1018 #define hdev_is_powered(hdev) (test_bit(HCI_UP, &hdev->flags) && \
1019                                 !test_bit(HCI_AUTO_OFF, &hdev->dev_flags))
1020 #define bredr_sc_enabled(dev) ((lmp_sc_capable(dev) || \
1021                                 test_bit(HCI_FORCE_SC, &(dev)->dbg_flags)) && \
1022                                test_bit(HCI_SC_ENABLED, &(dev)->dev_flags))
1023
1024 /* ----- HCI protocols ----- */
1025 #define HCI_PROTO_DEFER             0x01
1026
1027 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1028                                         __u8 type, __u8 *flags)
1029 {
1030         switch (type) {
1031         case ACL_LINK:
1032                 return l2cap_connect_ind(hdev, bdaddr);
1033
1034         case SCO_LINK:
1035         case ESCO_LINK:
1036                 return sco_connect_ind(hdev, bdaddr, flags);
1037
1038         default:
1039                 BT_ERR("unknown link type %d", type);
1040                 return -EINVAL;
1041         }
1042 }
1043
1044 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
1045 {
1046         switch (conn->type) {
1047         case ACL_LINK:
1048         case LE_LINK:
1049                 l2cap_connect_cfm(conn, status);
1050                 break;
1051
1052         case SCO_LINK:
1053         case ESCO_LINK:
1054                 sco_connect_cfm(conn, status);
1055                 break;
1056
1057         default:
1058                 BT_ERR("unknown link type %d", conn->type);
1059                 break;
1060         }
1061
1062         if (conn->connect_cfm_cb)
1063                 conn->connect_cfm_cb(conn, status);
1064 }
1065
1066 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1067 {
1068         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1069                 return HCI_ERROR_REMOTE_USER_TERM;
1070
1071         return l2cap_disconn_ind(conn);
1072 }
1073
1074 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
1075 {
1076         switch (conn->type) {
1077         case ACL_LINK:
1078         case LE_LINK:
1079                 l2cap_disconn_cfm(conn, reason);
1080                 break;
1081
1082         case SCO_LINK:
1083         case ESCO_LINK:
1084                 sco_disconn_cfm(conn, reason);
1085                 break;
1086
1087         /* L2CAP would be handled for BREDR chan */
1088         case AMP_LINK:
1089                 break;
1090
1091         default:
1092                 BT_ERR("unknown link type %d", conn->type);
1093                 break;
1094         }
1095
1096         if (conn->disconn_cfm_cb)
1097                 conn->disconn_cfm_cb(conn, reason);
1098 }
1099
1100 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
1101 {
1102         __u8 encrypt;
1103
1104         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1105                 return;
1106
1107         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1108                 return;
1109
1110         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1111         l2cap_security_cfm(conn, status, encrypt);
1112
1113         if (conn->security_cfm_cb)
1114                 conn->security_cfm_cb(conn, status);
1115 }
1116
1117 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
1118                                                                 __u8 encrypt)
1119 {
1120         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1121                 return;
1122
1123         l2cap_security_cfm(conn, status, encrypt);
1124
1125         if (conn->security_cfm_cb)
1126                 conn->security_cfm_cb(conn, status);
1127 }
1128
1129 /* ----- HCI callbacks ----- */
1130 struct hci_cb {
1131         struct list_head list;
1132
1133         char *name;
1134
1135         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
1136                                                                 __u8 encrypt);
1137         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
1138         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1139 };
1140
1141 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1142 {
1143         struct hci_cb *cb;
1144         __u8 encrypt;
1145
1146         hci_proto_auth_cfm(conn, status);
1147
1148         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1149                 return;
1150
1151         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1152
1153         read_lock(&hci_cb_list_lock);
1154         list_for_each_entry(cb, &hci_cb_list, list) {
1155                 if (cb->security_cfm)
1156                         cb->security_cfm(conn, status, encrypt);
1157         }
1158         read_unlock(&hci_cb_list_lock);
1159 }
1160
1161 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1162                                                                 __u8 encrypt)
1163 {
1164         struct hci_cb *cb;
1165
1166         if (conn->sec_level == BT_SECURITY_SDP)
1167                 conn->sec_level = BT_SECURITY_LOW;
1168
1169         if (conn->pending_sec_level > conn->sec_level)
1170                 conn->sec_level = conn->pending_sec_level;
1171
1172         hci_proto_encrypt_cfm(conn, status, encrypt);
1173
1174         read_lock(&hci_cb_list_lock);
1175         list_for_each_entry(cb, &hci_cb_list, list) {
1176                 if (cb->security_cfm)
1177                         cb->security_cfm(conn, status, encrypt);
1178         }
1179         read_unlock(&hci_cb_list_lock);
1180 }
1181
1182 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1183 {
1184         struct hci_cb *cb;
1185
1186         read_lock(&hci_cb_list_lock);
1187         list_for_each_entry(cb, &hci_cb_list, list) {
1188                 if (cb->key_change_cfm)
1189                         cb->key_change_cfm(conn, status);
1190         }
1191         read_unlock(&hci_cb_list_lock);
1192 }
1193
1194 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1195                                                                 __u8 role)
1196 {
1197         struct hci_cb *cb;
1198
1199         read_lock(&hci_cb_list_lock);
1200         list_for_each_entry(cb, &hci_cb_list, list) {
1201                 if (cb->role_switch_cfm)
1202                         cb->role_switch_cfm(conn, status, role);
1203         }
1204         read_unlock(&hci_cb_list_lock);
1205 }
1206
1207 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1208 {
1209         size_t parsed = 0;
1210
1211         if (data_len < 2)
1212                 return false;
1213
1214         while (parsed < data_len - 1) {
1215                 u8 field_len = data[0];
1216
1217                 if (field_len == 0)
1218                         break;
1219
1220                 parsed += field_len + 1;
1221
1222                 if (parsed > data_len)
1223                         break;
1224
1225                 if (data[1] == type)
1226                         return true;
1227
1228                 data += field_len + 1;
1229         }
1230
1231         return false;
1232 }
1233
1234 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1235 {
1236         if (addr_type != ADDR_LE_DEV_RANDOM)
1237                 return false;
1238
1239         if ((bdaddr->b[5] & 0xc0) == 0x40)
1240                return true;
1241
1242         return false;
1243 }
1244
1245 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1246 {
1247         if (addr_type == ADDR_LE_DEV_PUBLIC)
1248                 return true;
1249
1250         /* Check for Random Static address type */
1251         if ((addr->b[5] & 0xc0) == 0xc0)
1252                 return true;
1253
1254         return false;
1255 }
1256
1257 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1258                                           bdaddr_t *bdaddr, u8 addr_type)
1259 {
1260         if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1261                 return NULL;
1262
1263         return hci_find_irk_by_rpa(hdev, bdaddr);
1264 }
1265
1266 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1267                                         u16 to_multiplier)
1268 {
1269         u16 max_latency;
1270
1271         if (min > max || min < 6 || max > 3200)
1272                 return -EINVAL;
1273
1274         if (to_multiplier < 10 || to_multiplier > 3200)
1275                 return -EINVAL;
1276
1277         if (max >= to_multiplier * 8)
1278                 return -EINVAL;
1279
1280         max_latency = (to_multiplier * 8 / max) - 1;
1281         if (latency > 499 || latency > max_latency)
1282                 return -EINVAL;
1283
1284         return 0;
1285 }
1286
1287 int hci_register_cb(struct hci_cb *hcb);
1288 int hci_unregister_cb(struct hci_cb *hcb);
1289
1290 bool hci_req_pending(struct hci_dev *hdev);
1291
1292 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1293                                const void *param, u32 timeout);
1294 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1295                                   const void *param, u8 event, u32 timeout);
1296
1297 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1298                  const void *param);
1299 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1300 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1301
1302 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1303
1304 /* ----- HCI Sockets ----- */
1305 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1306 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1307 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1308
1309 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1310
1311 /* Management interface */
1312 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1313 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1314                                          BIT(BDADDR_LE_RANDOM))
1315 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1316                                          BIT(BDADDR_LE_PUBLIC) | \
1317                                          BIT(BDADDR_LE_RANDOM))
1318
1319 /* These LE scan and inquiry parameters were chosen according to LE General
1320  * Discovery Procedure specification.
1321  */
1322 #define DISCOV_LE_SCAN_WIN              0x12
1323 #define DISCOV_LE_SCAN_INT              0x12
1324 #define DISCOV_LE_TIMEOUT               10240   /* msec */
1325 #define DISCOV_INTERLEAVED_TIMEOUT      5120    /* msec */
1326 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1327 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1328
1329 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1330 int mgmt_new_settings(struct hci_dev *hdev);
1331 void mgmt_index_added(struct hci_dev *hdev);
1332 void mgmt_index_removed(struct hci_dev *hdev);
1333 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1334 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1335 int mgmt_update_adv_data(struct hci_dev *hdev);
1336 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1337 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1338                        bool persistent);
1339 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1340                            u32 flags, u8 *name, u8 name_len);
1341 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1342                               u8 link_type, u8 addr_type, u8 reason,
1343                               bool mgmt_connected);
1344 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1345                             u8 link_type, u8 addr_type, u8 status);
1346 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1347                          u8 addr_type, u8 status);
1348 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1349 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1350                                   u8 status);
1351 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1352                                       u8 status);
1353 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1354                               u8 link_type, u8 addr_type, u32 value,
1355                               u8 confirm_hint);
1356 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1357                                      u8 link_type, u8 addr_type, u8 status);
1358 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1359                                          u8 link_type, u8 addr_type, u8 status);
1360 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1361                               u8 link_type, u8 addr_type);
1362 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1363                                      u8 link_type, u8 addr_type, u8 status);
1364 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1365                                          u8 link_type, u8 addr_type, u8 status);
1366 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1367                              u8 link_type, u8 addr_type, u32 passkey,
1368                              u8 entered);
1369 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1370 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1371 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1372 void mgmt_sc_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1373 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1374                                     u8 status);
1375 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1376 void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
1377                                        u8 *rand192, u8 *hash256, u8 *rand256,
1378                                        u8 status);
1379 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1380                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1381                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1382 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1383                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1384 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1385 bool mgmt_powering_down(struct hci_dev *hdev);
1386 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1387 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1388 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1389                    bool persistent);
1390 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1391                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
1392                          u16 max_interval, u16 latency, u16 timeout);
1393 void mgmt_reenable_advertising(struct hci_dev *hdev);
1394 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1395
1396 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1397                       u16 to_multiplier);
1398 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1399                                                         __u8 ltk[16]);
1400
1401 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1402                                u8 *bdaddr_type);
1403
1404 #define SCO_AIRMODE_MASK       0x0003
1405 #define SCO_AIRMODE_CVSD       0x0000
1406 #define SCO_AIRMODE_TRANSP     0x0003
1407
1408 #endif /* __HCI_CORE_H */