include/net/bluetooth/hci_core.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
   4
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 #ifndef __HCI_CORE_H
  26 #define __HCI_CORE_H
  27
  28 #include <linux/leds.h>
  29 #include <linux/rculist.h>
  30
  31 #include <net/bluetooth/hci.h>
  32 #include <net/bluetooth/hci_sock.h>
  33
  34 /* HCI priority */
  35 #define HCI_PRIO_MAX    7
  36
  37 /* HCI Core structures */
  38 struct inquiry_data {
  39         bdaddr_t        bdaddr;
  40         __u8            pscan_rep_mode;
  41         __u8            pscan_period_mode;
  42         __u8            pscan_mode;
  43         __u8            dev_class[3];
  44         __le16          clock_offset;
  45         __s8            rssi;
  46         __u8            ssp_mode;
  47 };
  48
  49 struct inquiry_entry {
  50         struct list_head        all;            /* inq_cache.all */
  51         struct list_head        list;           /* unknown or resolve */
  52         enum {
  53                 NAME_NOT_KNOWN,
  54                 NAME_NEEDED,
  55                 NAME_PENDING,
  56                 NAME_KNOWN,
  57         } name_state;
  58         __u32                   timestamp;
  59         struct inquiry_data     data;
  60 };
  61
  62 struct discovery_state {
  63         int                     type;
  64         enum {
  65                 DISCOVERY_STOPPED,
  66                 DISCOVERY_STARTING,
  67                 DISCOVERY_FINDING,
  68                 DISCOVERY_RESOLVING,
  69                 DISCOVERY_STOPPING,
  70         } state;
  71         struct list_head        all;    /* All devices found during inquiry */
  72         struct list_head        unknown;        /* Name state not known */
  73         struct list_head        resolve;        /* Name needs to be resolved */
  74         __u32                   timestamp;
  75         bdaddr_t                last_adv_addr;
  76         u8                      last_adv_addr_type;
  77         s8                      last_adv_rssi;
  78         u32                     last_adv_flags;
  79         u8                      last_adv_data[HCI_MAX_AD_LENGTH];
  80         u8                      last_adv_data_len;
  81         bool                    report_invalid_rssi;
  82         bool                    result_filtering;
  83         bool                    limited;
  84         s8                      rssi;
  85         u16                     uuid_count;
  86         u8                      (*uuids)[16];
  87         unsigned long           scan_start;
  88         unsigned long           scan_duration;
  89 };
  90
  91 struct hci_conn_hash {
  92         struct list_head list;
  93         unsigned int     acl_num;
  94         unsigned int     amp_num;
  95         unsigned int     sco_num;
  96         unsigned int     le_num;
  97         unsigned int     le_num_slave;
  98 };
  99
 100 struct bdaddr_list {
 101         struct list_head list;
 102         bdaddr_t bdaddr;
 103         u8 bdaddr_type;
 104 };
 105
 106 struct bdaddr_list_with_irk {
 107         struct list_head list;
 108         bdaddr_t bdaddr;
 109         u8 bdaddr_type;
 110         u8 peer_irk[16];
 111         u8 local_irk[16];
 112 };
 113
 114 struct bt_uuid {
 115         struct list_head list;
 116         u8 uuid[16];
 117         u8 size;
 118         u8 svc_hint;
 119 };
 120
 121 struct smp_csrk {
 122         bdaddr_t bdaddr;
 123         u8 bdaddr_type;
 124         u8 type;
 125         u8 val[16];
 126 };
 127
 128 struct smp_ltk {
 129         struct list_head list;
 130         struct rcu_head rcu;
 131         bdaddr_t bdaddr;
 132         u8 bdaddr_type;
 133         u8 authenticated;
 134         u8 type;
 135         u8 enc_size;
 136         __le16 ediv;
 137         __le64 rand;
 138         u8 val[16];
 139 };
 140
 141 struct smp_irk {
 142         struct list_head list;
 143         struct rcu_head rcu;
 144         bdaddr_t rpa;
 145         bdaddr_t bdaddr;
 146         u8 addr_type;
 147         u8 val[16];
 148 };
 149
 150 struct link_key {
 151         struct list_head list;
 152         struct rcu_head rcu;
 153         bdaddr_t bdaddr;
 154         u8 type;
 155         u8 val[HCI_LINK_KEY_SIZE];
 156         u8 pin_len;
 157 };
 158
 159 struct oob_data {
 160         struct list_head list;
 161         bdaddr_t bdaddr;
 162         u8 bdaddr_type;
 163         u8 present;
 164         u8 hash192[16];
 165         u8 rand192[16];
 166         u8 hash256[16];
 167         u8 rand256[16];
 168 };
 169
 170 struct adv_info {
 171         struct list_head list;
 172         bool pending;
 173         __u8    instance;
 174         __u32   flags;
 175         __u16   timeout;
 176         __u16   remaining_time;
 177         __u16   duration;
 178         __u16   adv_data_len;
 179         __u8    adv_data[HCI_MAX_AD_LENGTH];
 180         __u16   scan_rsp_len;
 181         __u8    scan_rsp_data[HCI_MAX_AD_LENGTH];
 182         __s8    tx_power;
 183         bdaddr_t        random_addr;
 184         bool            rpa_expired;
 185         struct delayed_work     rpa_expired_cb;
 186 };
 187
 188 #define HCI_MAX_ADV_INSTANCES           5
 189 #define HCI_DEFAULT_ADV_DURATION        2
 190
 191 #define HCI_MAX_SHORT_NAME_LENGTH       10
 192
 193 /* Default LE RPA expiry time, 15 minutes */
 194 #define HCI_DEFAULT_RPA_TIMEOUT         (15 * 60)
 195
 196 /* Default min/max age of connection information (1s/3s) */
 197 #define DEFAULT_CONN_INFO_MIN_AGE       1000
 198 #define DEFAULT_CONN_INFO_MAX_AGE       3000
 199
 200 struct amp_assoc {
 201         __u16   len;
 202         __u16   offset;
 203         __u16   rem_len;
 204         __u16   len_so_far;
 205         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
 206 };
 207
 208 #define HCI_MAX_PAGES   3
 209
 210 struct hci_dev {
 211         struct list_head list;
 212         struct mutex    lock;
 213
 214         char            name[8];
 215         unsigned long   flags;
 216         __u16           id;
 217         __u8            bus;
 218         __u8            dev_type;
 219         bdaddr_t        bdaddr;
 220         bdaddr_t        setup_addr;
 221         bdaddr_t        public_addr;
 222         bdaddr_t        random_addr;
 223         bdaddr_t        static_addr;
 224         __u8            adv_addr_type;
 225         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 226         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 227         __u8            eir[HCI_MAX_EIR_LENGTH];
 228         __u16           appearance;
 229         __u8            dev_class[3];
 230         __u8            major_class;
 231         __u8            minor_class;
 232         __u8            max_page;
 233         __u8            features[HCI_MAX_PAGES][8];
 234         __u8            le_features[8];
 235         __u8            le_white_list_size;
 236         __u8            le_resolv_list_size;
 237         __u8            le_num_of_adv_sets;
 238         __u8            le_states[8];
 239         __u8            commands[64];
 240         __u8            hci_ver;
 241         __u16           hci_rev;
 242         __u8            lmp_ver;
 243         __u16           manufacturer;
 244         __u16           lmp_subver;
 245         __u16           voice_setting;
 246         __u8            num_iac;
 247         __u8            stored_max_keys;
 248         __u8            stored_num_keys;
 249         __u8            io_capability;
 250         __s8            inq_tx_power;
 251         __u16           page_scan_interval;
 252         __u16           page_scan_window;
 253         __u8            page_scan_type;
 254         __u8            le_adv_channel_map;
 255         __u16           le_adv_min_interval;
 256         __u16           le_adv_max_interval;
 257         __u8            le_scan_type;
 258         __u16           le_scan_interval;
 259         __u16           le_scan_window;
 260         __u16           le_conn_min_interval;
 261         __u16           le_conn_max_interval;
 262         __u16           le_conn_latency;
 263         __u16           le_supv_timeout;
 264         __u16           le_def_tx_len;
 265         __u16           le_def_tx_time;
 266         __u16           le_max_tx_len;
 267         __u16           le_max_tx_time;
 268         __u16           le_max_rx_len;
 269         __u16           le_max_rx_time;
 270         __u8            le_max_key_size;
 271         __u8            le_min_key_size;
 272         __u16           discov_interleaved_timeout;
 273         __u16           conn_info_min_age;
 274         __u16           conn_info_max_age;
 275         __u8            ssp_debug_mode;
 276         __u8            hw_error_code;
 277         __u32           clock;
 278
 279         __u16           devid_source;
 280         __u16           devid_vendor;
 281         __u16           devid_product;
 282         __u16           devid_version;
 283
 284         __u16           pkt_type;
 285         __u16           esco_type;
 286         __u16           link_policy;
 287         __u16           link_mode;
 288
 289         __u32           idle_timeout;
 290         __u16           sniff_min_interval;
 291         __u16           sniff_max_interval;
 292
 293         __u8            amp_status;
 294         __u32           amp_total_bw;
 295         __u32           amp_max_bw;
 296         __u32           amp_min_latency;
 297         __u32           amp_max_pdu;
 298         __u8            amp_type;
 299         __u16           amp_pal_cap;
 300         __u16           amp_assoc_size;
 301         __u32           amp_max_flush_to;
 302         __u32           amp_be_flush_to;
 303
 304         struct amp_assoc        loc_assoc;
 305
 306         __u8            flow_ctl_mode;
 307
 308         unsigned int    auto_accept_delay;
 309
 310         unsigned long   quirks;
 311
 312         atomic_t        cmd_cnt;
 313         unsigned int    acl_cnt;
 314         unsigned int    sco_cnt;
 315         unsigned int    le_cnt;
 316
 317         unsigned int    acl_mtu;
 318         unsigned int    sco_mtu;
 319         unsigned int    le_mtu;
 320         unsigned int    acl_pkts;
 321         unsigned int    sco_pkts;
 322         unsigned int    le_pkts;
 323
 324         __u16           block_len;
 325         __u16           block_mtu;
 326         __u16           num_blocks;
 327         __u16           block_cnt;
 328
 329         unsigned long   acl_last_tx;
 330         unsigned long   sco_last_tx;
 331         unsigned long   le_last_tx;
 332
 333         __u8            le_tx_def_phys;
 334         __u8            le_rx_def_phys;
 335
 336         struct workqueue_struct *workqueue;
 337         struct workqueue_struct *req_workqueue;
 338
 339         struct work_struct      power_on;
 340         struct delayed_work     power_off;
 341         struct work_struct      error_reset;
 342
 343         __u16                   discov_timeout;
 344         struct delayed_work     discov_off;
 345
 346         struct delayed_work     service_cache;
 347
 348         struct delayed_work     cmd_timer;
 349
 350         struct work_struct      rx_work;
 351         struct work_struct      cmd_work;
 352         struct work_struct      tx_work;
 353
 354         struct work_struct      discov_update;
 355         struct work_struct      bg_scan_update;
 356         struct work_struct      scan_update;
 357         struct work_struct      connectable_update;
 358         struct work_struct      discoverable_update;
 359         struct delayed_work     le_scan_disable;
 360         struct delayed_work     le_scan_restart;
 361
 362         struct sk_buff_head     rx_q;
 363         struct sk_buff_head     raw_q;
 364         struct sk_buff_head     cmd_q;
 365
 366         struct sk_buff          *sent_cmd;
 367
 368         struct mutex            req_lock;
 369         wait_queue_head_t       req_wait_q;
 370         __u32                   req_status;
 371         __u32                   req_result;
 372         struct sk_buff          *req_skb;
 373
 374         void                    *smp_data;
 375         void                    *smp_bredr_data;
 376
 377         struct discovery_state  discovery;
 378         struct hci_conn_hash    conn_hash;
 379
 380         struct list_head        mgmt_pending;
 381         struct list_head        blacklist;
 382         struct list_head        whitelist;
 383         struct list_head        uuids;
 384         struct list_head        link_keys;
 385         struct list_head        long_term_keys;
 386         struct list_head        identity_resolving_keys;
 387         struct list_head        remote_oob_data;
 388         struct list_head        le_white_list;
 389         struct list_head        le_resolv_list;
 390         struct list_head        le_conn_params;
 391         struct list_head        pend_le_conns;
 392         struct list_head        pend_le_reports;
 393
 394         struct hci_dev_stats    stat;
 395
 396         atomic_t                promisc;
 397
 398         const char              *hw_info;
 399         const char              *fw_info;
 400         struct dentry           *debugfs;
 401
 402         struct device           dev;
 403
 404         struct rfkill           *rfkill;
 405
 406         DECLARE_BITMAP(dev_flags, __HCI_NUM_FLAGS);
 407
 408         __s8                    adv_tx_power;
 409         __u8                    adv_data[HCI_MAX_AD_LENGTH];
 410         __u8                    adv_data_len;
 411         __u8                    scan_rsp_data[HCI_MAX_AD_LENGTH];
 412         __u8                    scan_rsp_data_len;
 413
 414         struct list_head        adv_instances;
 415         unsigned int            adv_instance_cnt;
 416         __u8                    cur_adv_instance;
 417         __u16                   adv_instance_timeout;
 418         struct delayed_work     adv_instance_expire;
 419
 420         __u8                    irk[16];
 421         __u32                   rpa_timeout;
 422         struct delayed_work     rpa_expired;
 423         bdaddr_t                rpa;
 424
 425 #if IS_ENABLED(CONFIG_BT_LEDS)
 426         struct led_trigger      *power_led;
 427 #endif
 428
 429         int (*open)(struct hci_dev *hdev);
 430         int (*close)(struct hci_dev *hdev);
 431         int (*flush)(struct hci_dev *hdev);
 432         int (*setup)(struct hci_dev *hdev);
 433         int (*shutdown)(struct hci_dev *hdev);
 434         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 435         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 436         void (*hw_error)(struct hci_dev *hdev, u8 code);
 437         int (*post_init)(struct hci_dev *hdev);
 438         int (*set_diag)(struct hci_dev *hdev, bool enable);
 439         int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 440         void (*cmd_timeout)(struct hci_dev *hdev);
 441 };
 442
 443 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 444
 445 struct hci_conn {
 446         struct list_head list;
 447
 448         atomic_t        refcnt;
 449
 450         bdaddr_t        dst;
 451         __u8            dst_type;
 452         bdaddr_t        src;
 453         __u8            src_type;
 454         bdaddr_t        init_addr;
 455         __u8            init_addr_type;
 456         bdaddr_t        resp_addr;
 457         __u8            resp_addr_type;
 458         __u16           handle;
 459         __u16           state;
 460         __u8            mode;
 461         __u8            type;
 462         __u8            role;
 463         bool            out;
 464         __u8            attempt;
 465         __u8            dev_class[3];
 466         __u8            features[HCI_MAX_PAGES][8];
 467         __u16           pkt_type;
 468         __u16           link_policy;
 469         __u8            key_type;
 470         __u8            auth_type;
 471         __u8            sec_level;
 472         __u8            pending_sec_level;
 473         __u8            pin_length;
 474         __u8            enc_key_size;
 475         __u8            io_capability;
 476         __u32           passkey_notify;
 477         __u8            passkey_entered;
 478         __u16           disc_timeout;
 479         __u16           conn_timeout;
 480         __u16           setting;
 481         __u16           le_conn_min_interval;
 482         __u16           le_conn_max_interval;
 483         __u16           le_conn_interval;
 484         __u16           le_conn_latency;
 485         __u16           le_supv_timeout;
 486         __u8            le_adv_data[HCI_MAX_AD_LENGTH];
 487         __u8            le_adv_data_len;
 488         __s8            rssi;
 489         __s8            tx_power;
 490         __s8            max_tx_power;
 491         unsigned long   flags;
 492
 493         __u32           clock;
 494         __u16           clock_accuracy;
 495
 496         unsigned long   conn_info_timestamp;
 497
 498         __u8            remote_cap;
 499         __u8            remote_auth;
 500         __u8            remote_id;
 501
 502         unsigned int    sent;
 503
 504         struct sk_buff_head data_q;
 505         struct list_head chan_list;
 506
 507         struct delayed_work disc_work;
 508         struct delayed_work auto_accept_work;
 509         struct delayed_work idle_work;
 510         struct delayed_work le_conn_timeout;
 511         struct work_struct  le_scan_cleanup;
 512
 513         struct device   dev;
 514         struct dentry   *debugfs;
 515
 516         struct hci_dev  *hdev;
 517         void            *l2cap_data;
 518         void            *sco_data;
 519         struct amp_mgr  *amp_mgr;
 520
 521         struct hci_conn *link;
 522
 523         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 524         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 525         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 526 };
 527
 528 struct hci_chan {
 529         struct list_head list;
 530         __u16 handle;
 531         struct hci_conn *conn;
 532         struct sk_buff_head data_q;
 533         unsigned int    sent;
 534         __u8            state;
 535 };
 536
 537 struct hci_conn_params {
 538         struct list_head list;
 539         struct list_head action;
 540
 541         bdaddr_t addr;
 542         u8 addr_type;
 543
 544         u16 conn_min_interval;
 545         u16 conn_max_interval;
 546         u16 conn_latency;
 547         u16 supervision_timeout;
 548
 549         enum {
 550                 HCI_AUTO_CONN_DISABLED,
 551                 HCI_AUTO_CONN_REPORT,
 552                 HCI_AUTO_CONN_DIRECT,
 553                 HCI_AUTO_CONN_ALWAYS,
 554                 HCI_AUTO_CONN_LINK_LOSS,
 555                 HCI_AUTO_CONN_EXPLICIT,
 556         } auto_connect;
 557
 558         struct hci_conn *conn;
 559         bool explicit_connect;
 560 };
 561
 562 extern struct list_head hci_dev_list;
 563 extern struct list_head hci_cb_list;
 564 extern rwlock_t hci_dev_list_lock;
 565 extern struct mutex hci_cb_list_lock;
 566
 567 #define hci_dev_set_flag(hdev, nr)             set_bit((nr), (hdev)->dev_flags)
 568 #define hci_dev_clear_flag(hdev, nr)           clear_bit((nr), (hdev)->dev_flags)
 569 #define hci_dev_change_flag(hdev, nr)          change_bit((nr), (hdev)->dev_flags)
 570 #define hci_dev_test_flag(hdev, nr)            test_bit((nr), (hdev)->dev_flags)
 571 #define hci_dev_test_and_set_flag(hdev, nr)    test_and_set_bit((nr), (hdev)->dev_flags)
 572 #define hci_dev_test_and_clear_flag(hdev, nr)  test_and_clear_bit((nr), (hdev)->dev_flags)
 573 #define hci_dev_test_and_change_flag(hdev, nr) test_and_change_bit((nr), (hdev)->dev_flags)
 574
 575 #define hci_dev_clear_volatile_flags(hdev)                      \
 576         do {                                                    \
 577                 hci_dev_clear_flag(hdev, HCI_LE_SCAN);          \
 578                 hci_dev_clear_flag(hdev, HCI_LE_ADV);           \
 579                 hci_dev_clear_flag(hdev, HCI_PERIODIC_INQ);     \
 580         } while (0)
 581
 582 /* ----- HCI interface to upper protocols ----- */
 583 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 584 int l2cap_disconn_ind(struct hci_conn *hcon);
 585 void l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 586
 587 #if IS_ENABLED(CONFIG_BT_BREDR)
 588 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 589 void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 590 #else
 591 static inline int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
 592                                   __u8 *flags)
 593 {
 594         return 0;
 595 }
 596
 597 static inline void sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb)
 598 {
 599 }
 600 #endif
 601
 602 /* ----- Inquiry cache ----- */
 603 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 604 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 605
 606 static inline void discovery_init(struct hci_dev *hdev)
 607 {
 608         hdev->discovery.state = DISCOVERY_STOPPED;
 609         INIT_LIST_HEAD(&hdev->discovery.all);
 610         INIT_LIST_HEAD(&hdev->discovery.unknown);
 611         INIT_LIST_HEAD(&hdev->discovery.resolve);
 612         hdev->discovery.report_invalid_rssi = true;
 613         hdev->discovery.rssi = HCI_RSSI_INVALID;
 614 }
 615
 616 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 617 {
 618         hdev->discovery.result_filtering = false;
 619         hdev->discovery.report_invalid_rssi = true;
 620         hdev->discovery.rssi = HCI_RSSI_INVALID;
 621         hdev->discovery.uuid_count = 0;
 622         kfree(hdev->discovery.uuids);
 623         hdev->discovery.uuids = NULL;
 624         hdev->discovery.scan_start = 0;
 625         hdev->discovery.scan_duration = 0;
 626 }
 627
 628 bool hci_discovery_active(struct hci_dev *hdev);
 629
 630 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 631
 632 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 633 {
 634         return list_empty(&hdev->discovery.all);
 635 }
 636
 637 static inline long inquiry_cache_age(struct hci_dev *hdev)
 638 {
 639         struct discovery_state *c = &hdev->discovery;
 640         return jiffies - c->timestamp;
 641 }
 642
 643 static inline long inquiry_entry_age(struct inquiry_entry *e)
 644 {
 645         return jiffies - e->timestamp;
 646 }
 647
 648 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 649                                                bdaddr_t *bdaddr);
 650 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 651                                                        bdaddr_t *bdaddr);
 652 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 653                                                        bdaddr_t *bdaddr,
 654                                                        int state);
 655 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 656                                       struct inquiry_entry *ie);
 657 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 658                              bool name_known);
 659 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 660
 661 /* ----- HCI Connections ----- */
 662 enum {
 663         HCI_CONN_AUTH_PEND,
 664         HCI_CONN_REAUTH_PEND,
 665         HCI_CONN_ENCRYPT_PEND,
 666         HCI_CONN_RSWITCH_PEND,
 667         HCI_CONN_MODE_CHANGE_PEND,
 668         HCI_CONN_SCO_SETUP_PEND,
 669         HCI_CONN_MGMT_CONNECTED,
 670         HCI_CONN_SSP_ENABLED,
 671         HCI_CONN_SC_ENABLED,
 672         HCI_CONN_AES_CCM,
 673         HCI_CONN_POWER_SAVE,
 674         HCI_CONN_FLUSH_KEY,
 675         HCI_CONN_ENCRYPT,
 676         HCI_CONN_AUTH,
 677         HCI_CONN_SECURE,
 678         HCI_CONN_FIPS,
 679         HCI_CONN_STK_ENCRYPT,
 680         HCI_CONN_AUTH_INITIATOR,
 681         HCI_CONN_DROP,
 682         HCI_CONN_PARAM_REMOVAL_PEND,
 683         HCI_CONN_NEW_LINK_KEY,
 684         HCI_CONN_SCANNING,
 685         HCI_CONN_AUTH_FAILURE,
 686 };
 687
 688 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 689 {
 690         struct hci_dev *hdev = conn->hdev;
 691         return hci_dev_test_flag(hdev, HCI_SSP_ENABLED) &&
 692                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 693 }
 694
 695 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
 696 {
 697         struct hci_dev *hdev = conn->hdev;
 698         return hci_dev_test_flag(hdev, HCI_SC_ENABLED) &&
 699                test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
 700 }
 701
 702 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 703 {
 704         struct hci_conn_hash *h = &hdev->conn_hash;
 705         list_add_rcu(&c->list, &h->list);
 706         switch (c->type) {
 707         case ACL_LINK:
 708                 h->acl_num++;
 709                 break;
 710         case AMP_LINK:
 711                 h->amp_num++;
 712                 break;
 713         case LE_LINK:
 714                 h->le_num++;
 715                 if (c->role == HCI_ROLE_SLAVE)
 716                         h->le_num_slave++;
 717                 break;
 718         case SCO_LINK:
 719         case ESCO_LINK:
 720                 h->sco_num++;
 721                 break;
 722         }
 723 }
 724
 725 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 726 {
 727         struct hci_conn_hash *h = &hdev->conn_hash;
 728
 729         list_del_rcu(&c->list);
 730         synchronize_rcu();
 731
 732         switch (c->type) {
 733         case ACL_LINK:
 734                 h->acl_num--;
 735                 break;
 736         case AMP_LINK:
 737                 h->amp_num--;
 738                 break;
 739         case LE_LINK:
 740                 h->le_num--;
 741                 if (c->role == HCI_ROLE_SLAVE)
 742                         h->le_num_slave--;
 743                 break;
 744         case SCO_LINK:
 745         case ESCO_LINK:
 746                 h->sco_num--;
 747                 break;
 748         }
 749 }
 750
 751 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 752 {
 753         struct hci_conn_hash *h = &hdev->conn_hash;
 754         switch (type) {
 755         case ACL_LINK:
 756                 return h->acl_num;
 757         case AMP_LINK:
 758                 return h->amp_num;
 759         case LE_LINK:
 760                 return h->le_num;
 761         case SCO_LINK:
 762         case ESCO_LINK:
 763                 return h->sco_num;
 764         default:
 765                 return 0;
 766         }
 767 }
 768
 769 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
 770 {
 771         struct hci_conn_hash *c = &hdev->conn_hash;
 772
 773         return c->acl_num + c->amp_num + c->sco_num + c->le_num;
 774 }
 775
 776 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
 777 {
 778         struct hci_conn_hash *h = &hdev->conn_hash;
 779         struct hci_conn *c;
 780         __u8 type = INVALID_LINK;
 781
 782         rcu_read_lock();
 783
 784         list_for_each_entry_rcu(c, &h->list, list) {
 785                 if (c->handle == handle) {
 786                         type = c->type;
 787                         break;
 788                 }
 789         }
 790
 791         rcu_read_unlock();
 792
 793         return type;
 794 }
 795
 796 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 797                                                                 __u16 handle)
 798 {
 799         struct hci_conn_hash *h = &hdev->conn_hash;
 800         struct hci_conn  *c;
 801
 802         rcu_read_lock();
 803
 804         list_for_each_entry_rcu(c, &h->list, list) {
 805                 if (c->handle == handle) {
 806                         rcu_read_unlock();
 807                         return c;
 808                 }
 809         }
 810         rcu_read_unlock();
 811
 812         return NULL;
 813 }
 814
 815 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 816                                                         __u8 type, bdaddr_t *ba)
 817 {
 818         struct hci_conn_hash *h = &hdev->conn_hash;
 819         struct hci_conn  *c;
 820
 821         rcu_read_lock();
 822
 823         list_for_each_entry_rcu(c, &h->list, list) {
 824                 if (c->type == type && !bacmp(&c->dst, ba)) {
 825                         rcu_read_unlock();
 826                         return c;
 827                 }
 828         }
 829
 830         rcu_read_unlock();
 831
 832         return NULL;
 833 }
 834
 835 static inline struct hci_conn *hci_conn_hash_lookup_le(struct hci_dev *hdev,
 836                                                        bdaddr_t *ba,
 837                                                        __u8 ba_type)
 838 {
 839         struct hci_conn_hash *h = &hdev->conn_hash;
 840         struct hci_conn  *c;
 841
 842         rcu_read_lock();
 843
 844         list_for_each_entry_rcu(c, &h->list, list) {
 845                 if (c->type != LE_LINK)
 846                        continue;
 847
 848                 if (ba_type == c->dst_type && !bacmp(&c->dst, ba)) {
 849                         rcu_read_unlock();
 850                         return c;
 851                 }
 852         }
 853
 854         rcu_read_unlock();
 855
 856         return NULL;
 857 }
 858
 859 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 860                                                         __u8 type, __u16 state)
 861 {
 862         struct hci_conn_hash *h = &hdev->conn_hash;
 863         struct hci_conn  *c;
 864
 865         rcu_read_lock();
 866
 867         list_for_each_entry_rcu(c, &h->list, list) {
 868                 if (c->type == type && c->state == state) {
 869                         rcu_read_unlock();
 870                         return c;
 871                 }
 872         }
 873
 874         rcu_read_unlock();
 875
 876         return NULL;
 877 }
 878
 879 static inline struct hci_conn *hci_lookup_le_connect(struct hci_dev *hdev)
 880 {
 881         struct hci_conn_hash *h = &hdev->conn_hash;
 882         struct hci_conn  *c;
 883
 884         rcu_read_lock();
 885
 886         list_for_each_entry_rcu(c, &h->list, list) {
 887                 if (c->type == LE_LINK && c->state == BT_CONNECT &&
 888                     !test_bit(HCI_CONN_SCANNING, &c->flags)) {
 889                         rcu_read_unlock();
 890                         return c;
 891                 }
 892         }
 893
 894         rcu_read_unlock();
 895
 896         return NULL;
 897 }
 898
 899 int hci_disconnect(struct hci_conn *conn, __u8 reason);
 900 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 901 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 902
 903 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
 904                               u8 role);
 905 int hci_conn_del(struct hci_conn *conn);
 906 void hci_conn_hash_flush(struct hci_dev *hdev);
 907 void hci_conn_check_pending(struct hci_dev *hdev);
 908
 909 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 910 void hci_chan_del(struct hci_chan *chan);
 911 void hci_chan_list_flush(struct hci_conn *conn);
 912 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 913
 914 struct hci_conn *hci_connect_le_scan(struct hci_dev *hdev, bdaddr_t *dst,
 915                                      u8 dst_type, u8 sec_level,
 916                                      u16 conn_timeout);
 917 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 918                                 u8 dst_type, u8 sec_level, u16 conn_timeout,
 919                                 u8 role, bdaddr_t *direct_rpa);
 920 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
 921                                  u8 sec_level, u8 auth_type);
 922 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 923                                  __u16 setting);
 924 int hci_conn_check_link_mode(struct hci_conn *conn);
 925 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 926 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
 927                       bool initiator);
 928 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 929
 930 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 931
 932 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
 933
 934 /*
 935  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 936  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 937  * working or anything else. They just guarantee that the object is available
 938  * and can be dereferenced. So you can use its locks, local variables and any
 939  * other constant data.
 940  * Before accessing runtime data, you _must_ lock the object and then check that
 941  * it is still running. As soon as you release the locks, the connection might
 942  * get dropped, though.
 943  *
 944  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 945  * how long the underlying connection is held. So every channel that runs on the
 946  * hci_conn object calls this to prevent the connection from disappearing. As
 947  * long as you hold a device, you must also guarantee that you have a valid
 948  * reference to the device via hci_conn_get() (or the initial reference from
 949  * hci_conn_add()).
 950  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 951  * break because nobody cares for that. But this means, we cannot use
 952  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 953  */
 954
 955 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
 956 {
 957         get_device(&conn->dev);
 958         return conn;
 959 }
 960
 961 static inline void hci_conn_put(struct hci_conn *conn)
 962 {
 963         put_device(&conn->dev);
 964 }
 965
 966 static inline void hci_conn_hold(struct hci_conn *conn)
 967 {
 968         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 969
 970         atomic_inc(&conn->refcnt);
 971         cancel_delayed_work(&conn->disc_work);
 972 }
 973
 974 static inline void hci_conn_drop(struct hci_conn *conn)
 975 {
 976         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 977
 978         if (atomic_dec_and_test(&conn->refcnt)) {
 979                 unsigned long timeo;
 980
 981                 switch (conn->type) {
 982                 case ACL_LINK:
 983                 case LE_LINK:
 984                         cancel_delayed_work(&conn->idle_work);
 985                         if (conn->state == BT_CONNECTED) {
 986                                 timeo = conn->disc_timeout;
 987                                 if (!conn->out)
 988                                         timeo *= 2;
 989                         } else {
 990                                 timeo = 0;
 991                         }
 992                         break;
 993
 994                 case AMP_LINK:
 995                         timeo = conn->disc_timeout;
 996                         break;
 997
 998                 default:
 999                         timeo = 0;
1000                         break;
1001                 }
1002
1003                 cancel_delayed_work(&conn->disc_work);
1004                 queue_delayed_work(conn->hdev->workqueue,
1005                                    &conn->disc_work, timeo);
1006         }
1007 }
1008
1009 /* ----- HCI Devices ----- */
1010 static inline void hci_dev_put(struct hci_dev *d)
1011 {
1012         BT_DBG("%s orig refcnt %d", d->name,
1013                kref_read(&d->dev.kobj.kref));
1014
1015         put_device(&d->dev);
1016 }
1017
1018 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
1019 {
1020         BT_DBG("%s orig refcnt %d", d->name,
1021                kref_read(&d->dev.kobj.kref));
1022
1023         get_device(&d->dev);
1024         return d;
1025 }
1026
1027 #define hci_dev_lock(d)         mutex_lock(&d->lock)
1028 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
1029
1030 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
1031 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
1032
1033 static inline void *hci_get_drvdata(struct hci_dev *hdev)
1034 {
1035         return dev_get_drvdata(&hdev->dev);
1036 }
1037
1038 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
1039 {
1040         dev_set_drvdata(&hdev->dev, data);
1041 }
1042
1043 struct hci_dev *hci_dev_get(int index);
1044 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src, u8 src_type);
1045
1046 struct hci_dev *hci_alloc_dev(void);
1047 void hci_free_dev(struct hci_dev *hdev);
1048 int hci_register_dev(struct hci_dev *hdev);
1049 void hci_unregister_dev(struct hci_dev *hdev);
1050 int hci_suspend_dev(struct hci_dev *hdev);
1051 int hci_resume_dev(struct hci_dev *hdev);
1052 int hci_reset_dev(struct hci_dev *hdev);
1053 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
1054 int hci_recv_diag(struct hci_dev *hdev, struct sk_buff *skb);
1055 __printf(2, 3) void hci_set_hw_info(struct hci_dev *hdev, const char *fmt, ...);
1056 __printf(2, 3) void hci_set_fw_info(struct hci_dev *hdev, const char *fmt, ...);
1057 int hci_dev_open(__u16 dev);
1058 int hci_dev_close(__u16 dev);
1059 int hci_dev_do_close(struct hci_dev *hdev);
1060 int hci_dev_reset(__u16 dev);
1061 int hci_dev_reset_stat(__u16 dev);
1062 int hci_dev_cmd(unsigned int cmd, void __user *arg);
1063 int hci_get_dev_list(void __user *arg);
1064 int hci_get_dev_info(void __user *arg);
1065 int hci_get_conn_list(void __user *arg);
1066 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
1067 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
1068 int hci_inquiry(void __user *arg);
1069
1070 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
1071                                            bdaddr_t *bdaddr, u8 type);
1072 struct bdaddr_list_with_irk *hci_bdaddr_list_lookup_with_irk(
1073                                     struct list_head *list, bdaddr_t *bdaddr,
1074                                     u8 type);
1075 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1076 int hci_bdaddr_list_add_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1077                                         u8 type, u8 *peer_irk, u8 *local_irk);
1078 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
1079 int hci_bdaddr_list_del_with_irk(struct list_head *list, bdaddr_t *bdaddr,
1080                                                                 u8 type);
1081 void hci_bdaddr_list_clear(struct list_head *list);
1082
1083 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
1084                                                bdaddr_t *addr, u8 addr_type);
1085 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
1086                                             bdaddr_t *addr, u8 addr_type);
1087 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
1088 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
1089
1090 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
1091                                                   bdaddr_t *addr,
1092                                                   u8 addr_type);
1093
1094 void hci_uuids_clear(struct hci_dev *hdev);
1095
1096 void hci_link_keys_clear(struct hci_dev *hdev);
1097 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1098 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
1099                                   bdaddr_t *bdaddr, u8 *val, u8 type,
1100                                   u8 pin_len, bool *persistent);
1101 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1102                             u8 addr_type, u8 type, u8 authenticated,
1103                             u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
1104 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1105                              u8 addr_type, u8 role);
1106 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
1107 void hci_smp_ltks_clear(struct hci_dev *hdev);
1108 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
1109
1110 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
1111 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
1112                                      u8 addr_type);
1113 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
1114                             u8 addr_type, u8 val[16], bdaddr_t *rpa);
1115 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
1116 void hci_smp_irks_clear(struct hci_dev *hdev);
1117
1118 bool hci_bdaddr_is_paired(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type);
1119
1120 void hci_remote_oob_data_clear(struct hci_dev *hdev);
1121 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
1122                                           bdaddr_t *bdaddr, u8 bdaddr_type);
1123 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1124                             u8 bdaddr_type, u8 *hash192, u8 *rand192,
1125                             u8 *hash256, u8 *rand256);
1126 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
1127                                u8 bdaddr_type);
1128
1129 void hci_adv_instances_clear(struct hci_dev *hdev);
1130 struct adv_info *hci_find_adv_instance(struct hci_dev *hdev, u8 instance);
1131 struct adv_info *hci_get_next_instance(struct hci_dev *hdev, u8 instance);
1132 int hci_add_adv_instance(struct hci_dev *hdev, u8 instance, u32 flags,
1133                          u16 adv_data_len, u8 *adv_data,
1134                          u16 scan_rsp_len, u8 *scan_rsp_data,
1135                          u16 timeout, u16 duration);
1136 int hci_remove_adv_instance(struct hci_dev *hdev, u8 instance);
1137 void hci_adv_instances_set_rpa_expired(struct hci_dev *hdev, bool rpa_expired);
1138
1139 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
1140
1141 void hci_init_sysfs(struct hci_dev *hdev);
1142 void hci_conn_init_sysfs(struct hci_conn *conn);
1143 void hci_conn_add_sysfs(struct hci_conn *conn);
1144 void hci_conn_del_sysfs(struct hci_conn *conn);
1145
1146 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
1147
1148 /* ----- LMP capabilities ----- */
1149 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
1150 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
1151 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
1152 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
1153 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
1154 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
1155 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
1156 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
1157 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
1158 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
1159 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
1160 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
1161 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
1162 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
1163 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
1164 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1165 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1166 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1167 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1168 #define lmp_edr_2m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_2M)
1169 #define lmp_edr_3m_capable(dev)    ((dev)->features[0][3] & LMP_EDR_3M)
1170 #define lmp_edr_3slot_capable(dev) ((dev)->features[0][4] & LMP_EDR_3SLOT)
1171 #define lmp_edr_5slot_capable(dev) ((dev)->features[0][5] & LMP_EDR_5SLOT)
1172
1173 /* ----- Extended LMP capabilities ----- */
1174 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1175 #define lmp_csb_slave_capable(dev)  ((dev)->features[2][0] & LMP_CSB_SLAVE)
1176 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1177 #define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1178 #define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1179 #define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1180
1181 /* ----- Host capabilities ----- */
1182 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1183 #define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1184 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1185 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1186
1187 #define hdev_is_powered(dev)   (test_bit(HCI_UP, &(dev)->flags) && \
1188                                 !hci_dev_test_flag(dev, HCI_AUTO_OFF))
1189 #define bredr_sc_enabled(dev)  (lmp_sc_capable(dev) && \
1190                                 hci_dev_test_flag(dev, HCI_SC_ENABLED))
1191
1192 #define scan_1m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_1M) || \
1193                       ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_1M))
1194
1195 #define scan_2m(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_2M) || \
1196                       ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_2M))
1197
1198 #define scan_coded(dev) (((dev)->le_tx_def_phys & HCI_LE_SET_PHY_CODED) || \
1199                          ((dev)->le_rx_def_phys & HCI_LE_SET_PHY_CODED))
1200
1201 /* Use ext scanning if set ext scan param and ext scan enable is supported */
1202 #define use_ext_scan(dev) (((dev)->commands[37] & 0x20) && \
1203                            ((dev)->commands[37] & 0x40))
1204 /* Use ext create connection if command is supported */
1205 #define use_ext_conn(dev) ((dev)->commands[37] & 0x80)
1206
1207 /* Extended advertising support */
1208 #define ext_adv_capable(dev) (((dev)->le_features[1] & HCI_LE_EXT_ADV))
1209
1210 /* ----- HCI protocols ----- */
1211 #define HCI_PROTO_DEFER             0x01
1212
1213 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1214                                         __u8 type, __u8 *flags)
1215 {
1216         switch (type) {
1217         case ACL_LINK:
1218                 return l2cap_connect_ind(hdev, bdaddr);
1219
1220         case SCO_LINK:
1221         case ESCO_LINK:
1222                 return sco_connect_ind(hdev, bdaddr, flags);
1223
1224         default:
1225                 BT_ERR("unknown link type %d", type);
1226                 return -EINVAL;
1227         }
1228 }
1229
1230 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1231 {
1232         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1233                 return HCI_ERROR_REMOTE_USER_TERM;
1234
1235         return l2cap_disconn_ind(conn);
1236 }
1237
1238 /* ----- HCI callbacks ----- */
1239 struct hci_cb {
1240         struct list_head list;
1241
1242         char *name;
1243
1244         void (*connect_cfm)     (struct hci_conn *conn, __u8 status);
1245         void (*disconn_cfm)     (struct hci_conn *conn, __u8 status);
1246         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
1247                                                                 __u8 encrypt);
1248         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
1249         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1250 };
1251
1252 static inline void hci_connect_cfm(struct hci_conn *conn, __u8 status)
1253 {
1254         struct hci_cb *cb;
1255
1256         mutex_lock(&hci_cb_list_lock);
1257         list_for_each_entry(cb, &hci_cb_list, list) {
1258                 if (cb->connect_cfm)
1259                         cb->connect_cfm(conn, status);
1260         }
1261         mutex_unlock(&hci_cb_list_lock);
1262
1263         if (conn->connect_cfm_cb)
1264                 conn->connect_cfm_cb(conn, status);
1265 }
1266
1267 static inline void hci_disconn_cfm(struct hci_conn *conn, __u8 reason)
1268 {
1269         struct hci_cb *cb;
1270
1271         mutex_lock(&hci_cb_list_lock);
1272         list_for_each_entry(cb, &hci_cb_list, list) {
1273                 if (cb->disconn_cfm)
1274                         cb->disconn_cfm(conn, reason);
1275         }
1276         mutex_unlock(&hci_cb_list_lock);
1277
1278         if (conn->disconn_cfm_cb)
1279                 conn->disconn_cfm_cb(conn, reason);
1280 }
1281
1282 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1283 {
1284         struct hci_cb *cb;
1285         __u8 encrypt;
1286
1287         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1288                 return;
1289
1290         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1291
1292         mutex_lock(&hci_cb_list_lock);
1293         list_for_each_entry(cb, &hci_cb_list, list) {
1294                 if (cb->security_cfm)
1295                         cb->security_cfm(conn, status, encrypt);
1296         }
1297         mutex_unlock(&hci_cb_list_lock);
1298
1299         if (conn->security_cfm_cb)
1300                 conn->security_cfm_cb(conn, status);
1301 }
1302
1303 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1304                                                                 __u8 encrypt)
1305 {
1306         struct hci_cb *cb;
1307
1308         if (conn->sec_level == BT_SECURITY_SDP)
1309                 conn->sec_level = BT_SECURITY_LOW;
1310
1311         if (conn->pending_sec_level > conn->sec_level)
1312                 conn->sec_level = conn->pending_sec_level;
1313
1314         mutex_lock(&hci_cb_list_lock);
1315         list_for_each_entry(cb, &hci_cb_list, list) {
1316                 if (cb->security_cfm)
1317                         cb->security_cfm(conn, status, encrypt);
1318         }
1319         mutex_unlock(&hci_cb_list_lock);
1320
1321         if (conn->security_cfm_cb)
1322                 conn->security_cfm_cb(conn, status);
1323 }
1324
1325 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1326 {
1327         struct hci_cb *cb;
1328
1329         mutex_lock(&hci_cb_list_lock);
1330         list_for_each_entry(cb, &hci_cb_list, list) {
1331                 if (cb->key_change_cfm)
1332                         cb->key_change_cfm(conn, status);
1333         }
1334         mutex_unlock(&hci_cb_list_lock);
1335 }
1336
1337 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1338                                                                 __u8 role)
1339 {
1340         struct hci_cb *cb;
1341
1342         mutex_lock(&hci_cb_list_lock);
1343         list_for_each_entry(cb, &hci_cb_list, list) {
1344                 if (cb->role_switch_cfm)
1345                         cb->role_switch_cfm(conn, status, role);
1346         }
1347         mutex_unlock(&hci_cb_list_lock);
1348 }
1349
1350 static inline void *eir_get_data(u8 *eir, size_t eir_len, u8 type,
1351                                  size_t *data_len)
1352 {
1353         size_t parsed = 0;
1354
1355         if (eir_len < 2)
1356                 return NULL;
1357
1358         while (parsed < eir_len - 1) {
1359                 u8 field_len = eir[0];
1360
1361                 if (field_len == 0)
1362                         break;
1363
1364                 parsed += field_len + 1;
1365
1366                 if (parsed > eir_len)
1367                         break;
1368
1369                 if (eir[1] != type) {
1370                         eir += field_len + 1;
1371                         continue;
1372                 }
1373
1374                 /* Zero length data */
1375                 if (field_len == 1)
1376                         return NULL;
1377
1378                 if (data_len)
1379                         *data_len = field_len - 1;
1380
1381                 return &eir[2];
1382         }
1383
1384         return NULL;
1385 }
1386
1387 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1388 {
1389         if (addr_type != ADDR_LE_DEV_RANDOM)
1390                 return false;
1391
1392         if ((bdaddr->b[5] & 0xc0) == 0x40)
1393                return true;
1394
1395         return false;
1396 }
1397
1398 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1399 {
1400         if (addr_type == ADDR_LE_DEV_PUBLIC)
1401                 return true;
1402
1403         /* Check for Random Static address type */
1404         if ((addr->b[5] & 0xc0) == 0xc0)
1405                 return true;
1406
1407         return false;
1408 }
1409
1410 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1411                                           bdaddr_t *bdaddr, u8 addr_type)
1412 {
1413         if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1414                 return NULL;
1415
1416         return hci_find_irk_by_rpa(hdev, bdaddr);
1417 }
1418
1419 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1420                                         u16 to_multiplier)
1421 {
1422         u16 max_latency;
1423
1424         if (min > max || min < 6 || max > 3200)
1425                 return -EINVAL;
1426
1427         if (to_multiplier < 10 || to_multiplier > 3200)
1428                 return -EINVAL;
1429
1430         if (max >= to_multiplier * 8)
1431                 return -EINVAL;
1432
1433         max_latency = (to_multiplier * 4 / max) - 1;
1434         if (latency > 499 || latency > max_latency)
1435                 return -EINVAL;
1436
1437         return 0;
1438 }
1439
1440 int hci_register_cb(struct hci_cb *hcb);
1441 int hci_unregister_cb(struct hci_cb *hcb);
1442
1443 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1444                                const void *param, u32 timeout);
1445 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1446                                   const void *param, u8 event, u32 timeout);
1447 int __hci_cmd_send(struct hci_dev *hdev, u16 opcode, u32 plen,
1448                    const void *param);
1449
1450 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1451                  const void *param);
1452 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1453 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1454
1455 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1456
1457 struct sk_buff *hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1458                              const void *param, u32 timeout);
1459
1460 /* ----- HCI Sockets ----- */
1461 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1462 void hci_send_to_channel(unsigned short channel, struct sk_buff *skb,
1463                          int flag, struct sock *skip_sk);
1464 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1465 void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event,
1466                                  void *data, u16 data_len, ktime_t tstamp,
1467                                  int flag, struct sock *skip_sk);
1468
1469 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1470
1471 #define HCI_MGMT_VAR_LEN        BIT(0)
1472 #define HCI_MGMT_NO_HDEV        BIT(1)
1473 #define HCI_MGMT_UNTRUSTED      BIT(2)
1474 #define HCI_MGMT_UNCONFIGURED   BIT(3)
1475
1476 struct hci_mgmt_handler {
1477         int (*func) (struct sock *sk, struct hci_dev *hdev, void *data,
1478                      u16 data_len);
1479         size_t data_len;
1480         unsigned long flags;
1481 };
1482
1483 struct hci_mgmt_chan {
1484         struct list_head list;
1485         unsigned short channel;
1486         size_t handler_count;
1487         const struct hci_mgmt_handler *handlers;
1488         void (*hdev_init) (struct sock *sk, struct hci_dev *hdev);
1489 };
1490
1491 int hci_mgmt_chan_register(struct hci_mgmt_chan *c);
1492 void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c);
1493
1494 /* Management interface */
1495 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1496 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1497                                          BIT(BDADDR_LE_RANDOM))
1498 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1499                                          BIT(BDADDR_LE_PUBLIC) | \
1500                                          BIT(BDADDR_LE_RANDOM))
1501
1502 /* These LE scan and inquiry parameters were chosen according to LE General
1503  * Discovery Procedure specification.
1504  */
1505 #define DISCOV_LE_SCAN_WIN              0x12
1506 #define DISCOV_LE_SCAN_INT              0x12
1507 #define DISCOV_LE_TIMEOUT               10240   /* msec */
1508 #define DISCOV_INTERLEAVED_TIMEOUT      5120    /* msec */
1509 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1510 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1511 #define DISCOV_LE_RESTART_DELAY         msecs_to_jiffies(200)   /* msec */
1512
1513 void mgmt_fill_version_info(void *ver);
1514 int mgmt_new_settings(struct hci_dev *hdev);
1515 void mgmt_index_added(struct hci_dev *hdev);
1516 void mgmt_index_removed(struct hci_dev *hdev);
1517 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1518 void mgmt_power_on(struct hci_dev *hdev, int err);
1519 void __mgmt_power_off(struct hci_dev *hdev);
1520 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1521                        bool persistent);
1522 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1523                            u32 flags, u8 *name, u8 name_len);
1524 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1525                               u8 link_type, u8 addr_type, u8 reason,
1526                               bool mgmt_connected);
1527 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1528                             u8 link_type, u8 addr_type, u8 status);
1529 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1530                          u8 addr_type, u8 status);
1531 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1532 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1533                                   u8 status);
1534 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1535                                       u8 status);
1536 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1537                               u8 link_type, u8 addr_type, u32 value,
1538                               u8 confirm_hint);
1539 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1540                                      u8 link_type, u8 addr_type, u8 status);
1541 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1542                                          u8 link_type, u8 addr_type, u8 status);
1543 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1544                               u8 link_type, u8 addr_type);
1545 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1546                                      u8 link_type, u8 addr_type, u8 status);
1547 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1548                                          u8 link_type, u8 addr_type, u8 status);
1549 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1550                              u8 link_type, u8 addr_type, u32 passkey,
1551                              u8 entered);
1552 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1553 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1554 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1555 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1556                                     u8 status);
1557 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1558 void mgmt_start_discovery_complete(struct hci_dev *hdev, u8 status);
1559 void mgmt_stop_discovery_complete(struct hci_dev *hdev, u8 status);
1560 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1561                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1562                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1563 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1564                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1565 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1566 bool mgmt_powering_down(struct hci_dev *hdev);
1567 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1568 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk, bool persistent);
1569 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1570                    bool persistent);
1571 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1572                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
1573                          u16 max_interval, u16 latency, u16 timeout);
1574 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1575 bool mgmt_get_connectable(struct hci_dev *hdev);
1576 void mgmt_set_connectable_complete(struct hci_dev *hdev, u8 status);
1577 void mgmt_set_discoverable_complete(struct hci_dev *hdev, u8 status);
1578 u8 mgmt_get_adv_discov_flags(struct hci_dev *hdev);
1579 void mgmt_advertising_added(struct sock *sk, struct hci_dev *hdev,
1580                             u8 instance);
1581 void mgmt_advertising_removed(struct sock *sk, struct hci_dev *hdev,
1582                               u8 instance);
1583 int mgmt_phy_configuration_changed(struct hci_dev *hdev, struct sock *skip);
1584
1585 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1586                       u16 to_multiplier);
1587 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1588                       __u8 ltk[16], __u8 key_size);
1589
1590 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1591                                u8 *bdaddr_type);
1592
1593 #define SCO_AIRMODE_MASK       0x0003
1594 #define SCO_AIRMODE_CVSD       0x0000
1595 #define SCO_AIRMODE_TRANSP     0x0003
1596
1597 #endif /* __HCI_CORE_H */