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