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 void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 507 int l2cap_disconn_ind(struct hci_conn *hcon);
 508 void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 509 int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 510 int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 511
 512 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 513 void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 514 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 515 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 516
 517 /* ----- Inquiry cache ----- */
 518 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 519 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 520
 521 static inline void discovery_init(struct hci_dev *hdev)
 522 {
 523         hdev->discovery.state = DISCOVERY_STOPPED;
 524         INIT_LIST_HEAD(&hdev->discovery.all);
 525         INIT_LIST_HEAD(&hdev->discovery.unknown);
 526         INIT_LIST_HEAD(&hdev->discovery.resolve);
 527         hdev->discovery.report_invalid_rssi = true;
 528         hdev->discovery.rssi = HCI_RSSI_INVALID;
 529 }
 530
 531 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 532 {
 533         hdev->discovery.report_invalid_rssi = true;
 534         hdev->discovery.rssi = HCI_RSSI_INVALID;
 535         hdev->discovery.uuid_count = 0;
 536         kfree(hdev->discovery.uuids);
 537         hdev->discovery.uuids = NULL;
 538         hdev->discovery.scan_start = 0;
 539         hdev->discovery.scan_duration = 0;
 540 }
 541
 542 bool hci_discovery_active(struct hci_dev *hdev);
 543
 544 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 545
 546 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 547 {
 548         return list_empty(&hdev->discovery.all);
 549 }
 550
 551 static inline long inquiry_cache_age(struct hci_dev *hdev)
 552 {
 553         struct discovery_state *c = &hdev->discovery;
 554         return jiffies - c->timestamp;
 555 }
 556
 557 static inline long inquiry_entry_age(struct inquiry_entry *e)
 558 {
 559         return jiffies - e->timestamp;
 560 }
 561
 562 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 563                                                bdaddr_t *bdaddr);
 564 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 565                                                        bdaddr_t *bdaddr);
 566 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 567                                                        bdaddr_t *bdaddr,
 568                                                        int state);
 569 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 570                                       struct inquiry_entry *ie);
 571 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 572                              bool name_known);
 573 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 574
 575 /* ----- HCI Connections ----- */
 576 enum {
 577         HCI_CONN_AUTH_PEND,
 578         HCI_CONN_REAUTH_PEND,
 579         HCI_CONN_ENCRYPT_PEND,
 580         HCI_CONN_RSWITCH_PEND,
 581         HCI_CONN_MODE_CHANGE_PEND,
 582         HCI_CONN_SCO_SETUP_PEND,
 583         HCI_CONN_MGMT_CONNECTED,
 584         HCI_CONN_SSP_ENABLED,
 585         HCI_CONN_SC_ENABLED,
 586         HCI_CONN_AES_CCM,
 587         HCI_CONN_POWER_SAVE,
 588         HCI_CONN_REMOTE_OOB,
 589         HCI_CONN_FLUSH_KEY,
 590         HCI_CONN_ENCRYPT,
 591         HCI_CONN_AUTH,
 592         HCI_CONN_SECURE,
 593         HCI_CONN_FIPS,
 594         HCI_CONN_STK_ENCRYPT,
 595         HCI_CONN_AUTH_INITIATOR,
 596         HCI_CONN_DROP,
 597         HCI_CONN_PARAM_REMOVAL_PEND,
 598         HCI_CONN_NEW_LINK_KEY,
 599 };
 600
 601 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 602 {
 603         struct hci_dev *hdev = conn->hdev;
 604         return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 605                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 606 }
 607
 608 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
 609 {
 610         struct hci_dev *hdev = conn->hdev;
 611         return test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
 612                test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
 613 }
 614
 615 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 616 {
 617         struct hci_conn_hash *h = &hdev->conn_hash;
 618         list_add_rcu(&c->list, &h->list);
 619         switch (c->type) {
 620         case ACL_LINK:
 621                 h->acl_num++;
 622                 break;
 623         case AMP_LINK:
 624                 h->amp_num++;
 625                 break;
 626         case LE_LINK:
 627                 h->le_num++;
 628                 if (c->role == HCI_ROLE_SLAVE)
 629                         h->le_num_slave++;
 630                 break;
 631         case SCO_LINK:
 632         case ESCO_LINK:
 633                 h->sco_num++;
 634                 break;
 635         }
 636 }
 637
 638 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 639 {
 640         struct hci_conn_hash *h = &hdev->conn_hash;
 641
 642         list_del_rcu(&c->list);
 643         synchronize_rcu();
 644
 645         switch (c->type) {
 646         case ACL_LINK:
 647                 h->acl_num--;
 648                 break;
 649         case AMP_LINK:
 650                 h->amp_num--;
 651                 break;
 652         case LE_LINK:
 653                 h->le_num--;
 654                 if (c->role == HCI_ROLE_SLAVE)
 655                         h->le_num_slave--;
 656                 break;
 657         case SCO_LINK:
 658         case ESCO_LINK:
 659                 h->sco_num--;
 660                 break;
 661         }
 662 }
 663
 664 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 665 {
 666         struct hci_conn_hash *h = &hdev->conn_hash;
 667         switch (type) {
 668         case ACL_LINK:
 669                 return h->acl_num;
 670         case AMP_LINK:
 671                 return h->amp_num;
 672         case LE_LINK:
 673                 return h->le_num;
 674         case SCO_LINK:
 675         case ESCO_LINK:
 676                 return h->sco_num;
 677         default:
 678                 return 0;
 679         }
 680 }
 681
 682 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
 683 {
 684         struct hci_conn_hash *c = &hdev->conn_hash;
 685
 686         return c->acl_num + c->amp_num + c->sco_num + c->le_num;
 687 }
 688
 689 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
 690 {
 691         struct hci_conn_hash *h = &hdev->conn_hash;
 692         struct hci_conn *c;
 693         __u8 type = INVALID_LINK;
 694
 695         rcu_read_lock();
 696
 697         list_for_each_entry_rcu(c, &h->list, list) {
 698                 if (c->handle == handle) {
 699                         type = c->type;
 700                         break;
 701                 }
 702         }
 703
 704         rcu_read_unlock();
 705
 706         return type;
 707 }
 708
 709 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 710                                                                 __u16 handle)
 711 {
 712         struct hci_conn_hash *h = &hdev->conn_hash;
 713         struct hci_conn  *c;
 714
 715         rcu_read_lock();
 716
 717         list_for_each_entry_rcu(c, &h->list, list) {
 718                 if (c->handle == handle) {
 719                         rcu_read_unlock();
 720                         return c;
 721                 }
 722         }
 723         rcu_read_unlock();
 724
 725         return NULL;
 726 }
 727
 728 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 729                                                         __u8 type, bdaddr_t *ba)
 730 {
 731         struct hci_conn_hash *h = &hdev->conn_hash;
 732         struct hci_conn  *c;
 733
 734         rcu_read_lock();
 735
 736         list_for_each_entry_rcu(c, &h->list, list) {
 737                 if (c->type == type && !bacmp(&c->dst, ba)) {
 738                         rcu_read_unlock();
 739                         return c;
 740                 }
 741         }
 742
 743         rcu_read_unlock();
 744
 745         return NULL;
 746 }
 747
 748 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 749                                                         __u8 type, __u16 state)
 750 {
 751         struct hci_conn_hash *h = &hdev->conn_hash;
 752         struct hci_conn  *c;
 753
 754         rcu_read_lock();
 755
 756         list_for_each_entry_rcu(c, &h->list, list) {
 757                 if (c->type == type && c->state == state) {
 758                         rcu_read_unlock();
 759                         return c;
 760                 }
 761         }
 762
 763         rcu_read_unlock();
 764
 765         return NULL;
 766 }
 767
 768 int hci_disconnect(struct hci_conn *conn, __u8 reason);
 769 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 770 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 771
 772 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
 773                               u8 role);
 774 int hci_conn_del(struct hci_conn *conn);
 775 void hci_conn_hash_flush(struct hci_dev *hdev);
 776 void hci_conn_check_pending(struct hci_dev *hdev);
 777
 778 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 779 void hci_chan_del(struct hci_chan *chan);
 780 void hci_chan_list_flush(struct hci_conn *conn);
 781 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 782
 783 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 784                                 u8 dst_type, u8 sec_level, u16 conn_timeout,
 785                                 u8 role);
 786 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
 787                                  u8 sec_level, u8 auth_type);
 788 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 789                                  __u16 setting);
 790 int hci_conn_check_link_mode(struct hci_conn *conn);
 791 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 792 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
 793                       bool initiator);
 794 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 795
 796 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 797
 798 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
 799
 800 /*
 801  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 802  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 803  * working or anything else. They just guarantee that the object is available
 804  * and can be dereferenced. So you can use its locks, local variables and any
 805  * other constant data.
 806  * Before accessing runtime data, you _must_ lock the object and then check that
 807  * it is still running. As soon as you release the locks, the connection might
 808  * get dropped, though.
 809  *
 810  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 811  * how long the underlying connection is held. So every channel that runs on the
 812  * hci_conn object calls this to prevent the connection from disappearing. As
 813  * long as you hold a device, you must also guarantee that you have a valid
 814  * reference to the device via hci_conn_get() (or the initial reference from
 815  * hci_conn_add()).
 816  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 817  * break because nobody cares for that. But this means, we cannot use
 818  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 819  */
 820
 821 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
 822 {
 823         get_device(&conn->dev);
 824         return conn;
 825 }
 826
 827 static inline void hci_conn_put(struct hci_conn *conn)
 828 {
 829         put_device(&conn->dev);
 830 }
 831
 832 static inline void hci_conn_hold(struct hci_conn *conn)
 833 {
 834         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 835
 836         atomic_inc(&conn->refcnt);
 837         cancel_delayed_work(&conn->disc_work);
 838 }
 839
 840 static inline void hci_conn_drop(struct hci_conn *conn)
 841 {
 842         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 843
 844         if (atomic_dec_and_test(&conn->refcnt)) {
 845                 unsigned long timeo;
 846
 847                 switch (conn->type) {
 848                 case ACL_LINK:
 849                 case LE_LINK:
 850                         cancel_delayed_work(&conn->idle_work);
 851                         if (conn->state == BT_CONNECTED) {
 852                                 timeo = conn->disc_timeout;
 853                                 if (!conn->out)
 854                                         timeo *= 2;
 855                         } else {
 856                                 timeo = 0;
 857                         }
 858                         break;
 859
 860                 case AMP_LINK:
 861                         timeo = conn->disc_timeout;
 862                         break;
 863
 864                 default:
 865                         timeo = 0;
 866                         break;
 867                 }
 868
 869                 cancel_delayed_work(&conn->disc_work);
 870                 queue_delayed_work(conn->hdev->workqueue,
 871                                    &conn->disc_work, timeo);
 872         }
 873 }
 874
 875 /* ----- HCI Devices ----- */
 876 static inline void hci_dev_put(struct hci_dev *d)
 877 {
 878         BT_DBG("%s orig refcnt %d", d->name,
 879                atomic_read(&d->dev.kobj.kref.refcount));
 880
 881         put_device(&d->dev);
 882 }
 883
 884 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 885 {
 886         BT_DBG("%s orig refcnt %d", d->name,
 887                atomic_read(&d->dev.kobj.kref.refcount));
 888
 889         get_device(&d->dev);
 890         return d;
 891 }
 892
 893 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 894 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 895
 896 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 897 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 898
 899 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 900 {
 901         return dev_get_drvdata(&hdev->dev);
 902 }
 903
 904 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 905 {
 906         dev_set_drvdata(&hdev->dev, data);
 907 }
 908
 909 struct hci_dev *hci_dev_get(int index);
 910 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
 911
 912 struct hci_dev *hci_alloc_dev(void);
 913 void hci_free_dev(struct hci_dev *hdev);
 914 int hci_register_dev(struct hci_dev *hdev);
 915 void hci_unregister_dev(struct hci_dev *hdev);
 916 int hci_suspend_dev(struct hci_dev *hdev);
 917 int hci_resume_dev(struct hci_dev *hdev);
 918 int hci_reset_dev(struct hci_dev *hdev);
 919 int hci_dev_open(__u16 dev);
 920 int hci_dev_close(__u16 dev);
 921 int hci_dev_reset(__u16 dev);
 922 int hci_dev_reset_stat(__u16 dev);
 923 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 924 int hci_get_dev_list(void __user *arg);
 925 int hci_get_dev_info(void __user *arg);
 926 int hci_get_conn_list(void __user *arg);
 927 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 928 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 929 int hci_inquiry(void __user *arg);
 930
 931 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
 932                                            bdaddr_t *bdaddr, u8 type);
 933 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
 934 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
 935 void hci_bdaddr_list_clear(struct list_head *list);
 936
 937 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
 938                                                bdaddr_t *addr, u8 addr_type);
 939 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
 940                                             bdaddr_t *addr, u8 addr_type);
 941 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
 942 void hci_conn_params_clear_all(struct hci_dev *hdev);
 943 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
 944
 945 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
 946                                                   bdaddr_t *addr,
 947                                                   u8 addr_type);
 948
 949 void hci_uuids_clear(struct hci_dev *hdev);
 950
 951 void hci_link_keys_clear(struct hci_dev *hdev);
 952 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 953 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
 954                                   bdaddr_t *bdaddr, u8 *val, u8 type,
 955                                   u8 pin_len, bool *persistent);
 956 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
 957                             u8 addr_type, u8 type, u8 authenticated,
 958                             u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
 959 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
 960                              u8 addr_type, u8 role);
 961 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
 962 void hci_smp_ltks_clear(struct hci_dev *hdev);
 963 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 964
 965 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
 966 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 967                                      u8 addr_type);
 968 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
 969                             u8 addr_type, u8 val[16], bdaddr_t *rpa);
 970 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
 971 void hci_smp_irks_clear(struct hci_dev *hdev);
 972
 973 void hci_remote_oob_data_clear(struct hci_dev *hdev);
 974 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 975                                           bdaddr_t *bdaddr, u8 bdaddr_type);
 976 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
 977                             u8 bdaddr_type, u8 *hash192, u8 *rand192,
 978                             u8 *hash256, u8 *rand256);
 979 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
 980                                u8 bdaddr_type);
 981
 982 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 983
 984 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
 985 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 986
 987 void hci_init_sysfs(struct hci_dev *hdev);
 988 void hci_conn_init_sysfs(struct hci_conn *conn);
 989 void hci_conn_add_sysfs(struct hci_conn *conn);
 990 void hci_conn_del_sysfs(struct hci_conn *conn);
 991
 992 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
 993
 994 /* ----- LMP capabilities ----- */
 995 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
 996 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
 997 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
 998 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
 999 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
1000 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
1001 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
1002 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
1003 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
1004 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1005 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1006 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
1007 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1008 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1009 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
1010 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1011 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1012 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1013 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1014
1015 /* ----- Extended LMP capabilities ----- */
1016 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1017 #define lmp_csb_slave_capable(dev)  ((dev)->features[2][0] & LMP_CSB_SLAVE)
1018 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1019 #define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1020 #define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1021 #define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1022
1023 /* ----- Host capabilities ----- */
1024 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1025 #define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1026 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1027 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1028
1029 #define hdev_is_powered(hdev) (test_bit(HCI_UP, &hdev->flags) && \
1030                                 !test_bit(HCI_AUTO_OFF, &hdev->dev_flags))
1031 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1032                                test_bit(HCI_SC_ENABLED, &(dev)->dev_flags))
1033
1034 /* ----- HCI protocols ----- */
1035 #define HCI_PROTO_DEFER             0x01
1036
1037 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1038                                         __u8 type, __u8 *flags)
1039 {
1040         switch (type) {
1041         case ACL_LINK:
1042                 return l2cap_connect_ind(hdev, bdaddr);
1043
1044         case SCO_LINK:
1045         case ESCO_LINK:
1046                 return sco_connect_ind(hdev, bdaddr, flags);
1047
1048         default:
1049                 BT_ERR("unknown link type %d", type);
1050                 return -EINVAL;
1051         }
1052 }
1053
1054 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
1055 {
1056         switch (conn->type) {
1057         case ACL_LINK:
1058         case LE_LINK:
1059                 l2cap_connect_cfm(conn, status);
1060                 break;
1061
1062         case SCO_LINK:
1063         case ESCO_LINK:
1064                 sco_connect_cfm(conn, status);
1065                 break;
1066
1067         default:
1068                 BT_ERR("unknown link type %d", conn->type);
1069                 break;
1070         }
1071
1072         if (conn->connect_cfm_cb)
1073                 conn->connect_cfm_cb(conn, status);
1074 }
1075
1076 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1077 {
1078         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1079                 return HCI_ERROR_REMOTE_USER_TERM;
1080
1081         return l2cap_disconn_ind(conn);
1082 }
1083
1084 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
1085 {
1086         switch (conn->type) {
1087         case ACL_LINK:
1088         case LE_LINK:
1089                 l2cap_disconn_cfm(conn, reason);
1090                 break;
1091
1092         case SCO_LINK:
1093         case ESCO_LINK:
1094                 sco_disconn_cfm(conn, reason);
1095                 break;
1096
1097         /* L2CAP would be handled for BREDR chan */
1098         case AMP_LINK:
1099                 break;
1100
1101         default:
1102                 BT_ERR("unknown link type %d", conn->type);
1103                 break;
1104         }
1105
1106         if (conn->disconn_cfm_cb)
1107                 conn->disconn_cfm_cb(conn, reason);
1108 }
1109
1110 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
1111 {
1112         __u8 encrypt;
1113
1114         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1115                 return;
1116
1117         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1118                 return;
1119
1120         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1121         l2cap_security_cfm(conn, status, encrypt);
1122
1123         if (conn->security_cfm_cb)
1124                 conn->security_cfm_cb(conn, status);
1125 }
1126
1127 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
1128                                                                 __u8 encrypt)
1129 {
1130         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1131                 return;
1132
1133         l2cap_security_cfm(conn, status, encrypt);
1134
1135         if (conn->security_cfm_cb)
1136                 conn->security_cfm_cb(conn, status);
1137 }
1138
1139 /* ----- HCI callbacks ----- */
1140 struct hci_cb {
1141         struct list_head list;
1142
1143         char *name;
1144
1145         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
1146                                                                 __u8 encrypt);
1147         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
1148         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1149 };
1150
1151 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1152 {
1153         struct hci_cb *cb;
1154         __u8 encrypt;
1155
1156         hci_proto_auth_cfm(conn, status);
1157
1158         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1159                 return;
1160
1161         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1162
1163         mutex_lock(&hci_cb_list_lock);
1164         list_for_each_entry(cb, &hci_cb_list, list) {
1165                 if (cb->security_cfm)
1166                         cb->security_cfm(conn, status, encrypt);
1167         }
1168         mutex_unlock(&hci_cb_list_lock);
1169 }
1170
1171 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1172                                                                 __u8 encrypt)
1173 {
1174         struct hci_cb *cb;
1175
1176         if (conn->sec_level == BT_SECURITY_SDP)
1177                 conn->sec_level = BT_SECURITY_LOW;
1178
1179         if (conn->pending_sec_level > conn->sec_level)
1180                 conn->sec_level = conn->pending_sec_level;
1181
1182         hci_proto_encrypt_cfm(conn, status, encrypt);
1183
1184         mutex_lock(&hci_cb_list_lock);
1185         list_for_each_entry(cb, &hci_cb_list, list) {
1186                 if (cb->security_cfm)
1187                         cb->security_cfm(conn, status, encrypt);
1188         }
1189         mutex_unlock(&hci_cb_list_lock);
1190 }
1191
1192 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1193 {
1194         struct hci_cb *cb;
1195
1196         mutex_lock(&hci_cb_list_lock);
1197         list_for_each_entry(cb, &hci_cb_list, list) {
1198                 if (cb->key_change_cfm)
1199                         cb->key_change_cfm(conn, status);
1200         }
1201         mutex_unlock(&hci_cb_list_lock);
1202 }
1203
1204 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1205                                                                 __u8 role)
1206 {
1207         struct hci_cb *cb;
1208
1209         mutex_lock(&hci_cb_list_lock);
1210         list_for_each_entry(cb, &hci_cb_list, list) {
1211                 if (cb->role_switch_cfm)
1212                         cb->role_switch_cfm(conn, status, role);
1213         }
1214         mutex_unlock(&hci_cb_list_lock);
1215 }
1216
1217 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1218 {
1219         size_t parsed = 0;
1220
1221         if (data_len < 2)
1222                 return false;
1223
1224         while (parsed < data_len - 1) {
1225                 u8 field_len = data[0];
1226
1227                 if (field_len == 0)
1228                         break;
1229
1230                 parsed += field_len + 1;
1231
1232                 if (parsed > data_len)
1233                         break;
1234
1235                 if (data[1] == type)
1236                         return true;
1237
1238                 data += field_len + 1;
1239         }
1240
1241         return false;
1242 }
1243
1244 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1245 {
1246         if (addr_type != ADDR_LE_DEV_RANDOM)
1247                 return false;
1248
1249         if ((bdaddr->b[5] & 0xc0) == 0x40)
1250                return true;
1251
1252         return false;
1253 }
1254
1255 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1256 {
1257         if (addr_type == ADDR_LE_DEV_PUBLIC)
1258                 return true;
1259
1260         /* Check for Random Static address type */
1261         if ((addr->b[5] & 0xc0) == 0xc0)
1262                 return true;
1263
1264         return false;
1265 }
1266
1267 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1268                                           bdaddr_t *bdaddr, u8 addr_type)
1269 {
1270         if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1271                 return NULL;
1272
1273         return hci_find_irk_by_rpa(hdev, bdaddr);
1274 }
1275
1276 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1277                                         u16 to_multiplier)
1278 {
1279         u16 max_latency;
1280
1281         if (min > max || min < 6 || max > 3200)
1282                 return -EINVAL;
1283
1284         if (to_multiplier < 10 || to_multiplier > 3200)
1285                 return -EINVAL;
1286
1287         if (max >= to_multiplier * 8)
1288                 return -EINVAL;
1289
1290         max_latency = (to_multiplier * 8 / max) - 1;
1291         if (latency > 499 || latency > max_latency)
1292                 return -EINVAL;
1293
1294         return 0;
1295 }
1296
1297 int hci_register_cb(struct hci_cb *hcb);
1298 int hci_unregister_cb(struct hci_cb *hcb);
1299
1300 bool hci_req_pending(struct hci_dev *hdev);
1301
1302 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1303                                const void *param, u32 timeout);
1304 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1305                                   const void *param, u8 event, u32 timeout);
1306
1307 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1308                  const void *param);
1309 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1310 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1311
1312 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1313
1314 /* ----- HCI Sockets ----- */
1315 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1316 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1317 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1318
1319 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1320
1321 /* Management interface */
1322 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1323 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1324                                          BIT(BDADDR_LE_RANDOM))
1325 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1326                                          BIT(BDADDR_LE_PUBLIC) | \
1327                                          BIT(BDADDR_LE_RANDOM))
1328
1329 /* These LE scan and inquiry parameters were chosen according to LE General
1330  * Discovery Procedure specification.
1331  */
1332 #define DISCOV_LE_SCAN_WIN              0x12
1333 #define DISCOV_LE_SCAN_INT              0x12
1334 #define DISCOV_LE_TIMEOUT               10240   /* msec */
1335 #define DISCOV_INTERLEAVED_TIMEOUT      5120    /* msec */
1336 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1337 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1338 #define DISCOV_LE_RESTART_DELAY         msecs_to_jiffies(200)   /* msec */
1339
1340 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1341 int mgmt_new_settings(struct hci_dev *hdev);
1342 void mgmt_index_added(struct hci_dev *hdev);
1343 void mgmt_index_removed(struct hci_dev *hdev);
1344 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1345 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1346 int mgmt_update_adv_data(struct hci_dev *hdev);
1347 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1348 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1349                        bool persistent);
1350 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1351                            u32 flags, u8 *name, u8 name_len);
1352 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1353                               u8 link_type, u8 addr_type, u8 reason,
1354                               bool mgmt_connected);
1355 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1356                             u8 link_type, u8 addr_type, u8 status);
1357 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1358                          u8 addr_type, u8 status);
1359 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1360 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1361                                   u8 status);
1362 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1363                                       u8 status);
1364 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1365                               u8 link_type, u8 addr_type, u32 value,
1366                               u8 confirm_hint);
1367 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1368                                      u8 link_type, u8 addr_type, u8 status);
1369 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1370                                          u8 link_type, u8 addr_type, u8 status);
1371 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1372                               u8 link_type, u8 addr_type);
1373 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1374                                      u8 link_type, u8 addr_type, u8 status);
1375 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1376                                          u8 link_type, u8 addr_type, u8 status);
1377 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1378                              u8 link_type, u8 addr_type, u32 passkey,
1379                              u8 entered);
1380 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1381 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1382 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1383 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1384                                     u8 status);
1385 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1386 void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
1387                                        u8 *rand192, u8 *hash256, u8 *rand256,
1388                                        u8 status);
1389 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1390                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1391                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1392 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1393                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1394 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1395 bool mgmt_powering_down(struct hci_dev *hdev);
1396 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1397 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1398 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1399                    bool persistent);
1400 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1401                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
1402                          u16 max_interval, u16 latency, u16 timeout);
1403 void mgmt_reenable_advertising(struct hci_dev *hdev);
1404 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1405
1406 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1407                       u16 to_multiplier);
1408 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1409                                                         __u8 ltk[16]);
1410
1411 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1412                                u8 *bdaddr_type);
1413
1414 #define SCO_AIRMODE_MASK       0x0003
1415 #define SCO_AIRMODE_CVSD       0x0000
1416 #define SCO_AIRMODE_TRANSP     0x0003
1417
1418 #endif /* __HCI_CORE_H */