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