include/net/bluetooth/hci_core.h

   1 /*
   2    BlueZ - Bluetooth protocol stack for Linux
   3    Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
   4
   5    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License version 2 as
   9    published by the Free Software Foundation;
  10
  11    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  12    OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  13    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS.
  14    IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY
  15    CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES
  16    WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  17    ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  18    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  19
  20    ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS,
  21    COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS
  22    SOFTWARE IS DISCLAIMED.
  23 */
  24
  25 #ifndef __HCI_CORE_H
  26 #define __HCI_CORE_H
  27
  28 #include <net/bluetooth/hci.h>
  29 #include <net/bluetooth/hci_sock.h>
  30
  31 /* HCI priority */
  32 #define HCI_PRIO_MAX    7
  33
  34 /* HCI Core structures */
  35 struct inquiry_data {
  36         bdaddr_t        bdaddr;
  37         __u8            pscan_rep_mode;
  38         __u8            pscan_period_mode;
  39         __u8            pscan_mode;
  40         __u8            dev_class[3];
  41         __le16          clock_offset;
  42         __s8            rssi;
  43         __u8            ssp_mode;
  44 };
  45
  46 struct inquiry_entry {
  47         struct list_head        all;            /* inq_cache.all */
  48         struct list_head        list;           /* unknown or resolve */
  49         enum {
  50                 NAME_NOT_KNOWN,
  51                 NAME_NEEDED,
  52                 NAME_PENDING,
  53                 NAME_KNOWN,
  54         } name_state;
  55         __u32                   timestamp;
  56         struct inquiry_data     data;
  57 };
  58
  59 struct discovery_state {
  60         int                     type;
  61         enum {
  62                 DISCOVERY_STOPPED,
  63                 DISCOVERY_STARTING,
  64                 DISCOVERY_FINDING,
  65                 DISCOVERY_RESOLVING,
  66                 DISCOVERY_STOPPING,
  67         } state;
  68         struct list_head        all;    /* All devices found during inquiry */
  69         struct list_head        unknown;        /* Name state not known */
  70         struct list_head        resolve;        /* Name needs to be resolved */
  71         __u32                   timestamp;
  72         bdaddr_t                last_adv_addr;
  73         u8                      last_adv_addr_type;
  74         s8                      last_adv_rssi;
  75         u32                     last_adv_flags;
  76         u8                      last_adv_data[HCI_MAX_AD_LENGTH];
  77         u8                      last_adv_data_len;
  78         bool                    report_invalid_rssi;
  79         s8                      rssi;
  80         u16                     uuid_count;
  81         u8                      (*uuids)[16];
  82 };
  83
  84 struct hci_conn_hash {
  85         struct list_head list;
  86         unsigned int     acl_num;
  87         unsigned int     amp_num;
  88         unsigned int     sco_num;
  89         unsigned int     le_num;
  90         unsigned int     le_num_slave;
  91 };
  92
  93 struct bdaddr_list {
  94         struct list_head list;
  95         bdaddr_t bdaddr;
  96         u8 bdaddr_type;
  97 };
  98
  99 struct bt_uuid {
 100         struct list_head list;
 101         u8 uuid[16];
 102         u8 size;
 103         u8 svc_hint;
 104 };
 105
 106 struct smp_csrk {
 107         bdaddr_t bdaddr;
 108         u8 bdaddr_type;
 109         u8 master;
 110         u8 val[16];
 111 };
 112
 113 struct smp_ltk {
 114         struct list_head list;
 115         struct rcu_head rcu;
 116         bdaddr_t bdaddr;
 117         u8 bdaddr_type;
 118         u8 authenticated;
 119         u8 type;
 120         u8 enc_size;
 121         __le16 ediv;
 122         __le64 rand;
 123         u8 val[16];
 124 };
 125
 126 struct smp_irk {
 127         struct list_head list;
 128         struct rcu_head rcu;
 129         bdaddr_t rpa;
 130         bdaddr_t bdaddr;
 131         u8 addr_type;
 132         u8 val[16];
 133 };
 134
 135 struct link_key {
 136         struct list_head list;
 137         struct rcu_head rcu;
 138         bdaddr_t bdaddr;
 139         u8 type;
 140         u8 val[HCI_LINK_KEY_SIZE];
 141         u8 pin_len;
 142 };
 143
 144 struct oob_data {
 145         struct list_head list;
 146         bdaddr_t bdaddr;
 147         u8 bdaddr_type;
 148         u8 hash192[16];
 149         u8 rand192[16];
 150         u8 hash256[16];
 151         u8 rand256[16];
 152 };
 153
 154 #define HCI_MAX_SHORT_NAME_LENGTH       10
 155
 156 /* Default LE RPA expiry time, 15 minutes */
 157 #define HCI_DEFAULT_RPA_TIMEOUT         (15 * 60)
 158
 159 /* Default min/max age of connection information (1s/3s) */
 160 #define DEFAULT_CONN_INFO_MIN_AGE       1000
 161 #define DEFAULT_CONN_INFO_MAX_AGE       3000
 162
 163 struct amp_assoc {
 164         __u16   len;
 165         __u16   offset;
 166         __u16   rem_len;
 167         __u16   len_so_far;
 168         __u8    data[HCI_MAX_AMP_ASSOC_SIZE];
 169 };
 170
 171 #define HCI_MAX_PAGES   3
 172
 173 #define NUM_REASSEMBLY 4
 174 struct hci_dev {
 175         struct list_head list;
 176         struct mutex    lock;
 177
 178         char            name[8];
 179         unsigned long   flags;
 180         __u16           id;
 181         __u8            bus;
 182         __u8            dev_type;
 183         bdaddr_t        bdaddr;
 184         bdaddr_t        setup_addr;
 185         bdaddr_t        public_addr;
 186         bdaddr_t        random_addr;
 187         bdaddr_t        static_addr;
 188         __u8            adv_addr_type;
 189         __u8            dev_name[HCI_MAX_NAME_LENGTH];
 190         __u8            short_name[HCI_MAX_SHORT_NAME_LENGTH];
 191         __u8            eir[HCI_MAX_EIR_LENGTH];
 192         __u8            dev_class[3];
 193         __u8            major_class;
 194         __u8            minor_class;
 195         __u8            max_page;
 196         __u8            features[HCI_MAX_PAGES][8];
 197         __u8            le_features[8];
 198         __u8            le_white_list_size;
 199         __u8            le_states[8];
 200         __u8            commands[64];
 201         __u8            hci_ver;
 202         __u16           hci_rev;
 203         __u8            lmp_ver;
 204         __u16           manufacturer;
 205         __u16           lmp_subver;
 206         __u16           voice_setting;
 207         __u8            num_iac;
 208         __u8            stored_max_keys;
 209         __u8            stored_num_keys;
 210         __u8            io_capability;
 211         __s8            inq_tx_power;
 212         __u16           page_scan_interval;
 213         __u16           page_scan_window;
 214         __u8            page_scan_type;
 215         __u8            le_adv_channel_map;
 216         __u16           le_adv_min_interval;
 217         __u16           le_adv_max_interval;
 218         __u8            le_scan_type;
 219         __u16           le_scan_interval;
 220         __u16           le_scan_window;
 221         __u16           le_conn_min_interval;
 222         __u16           le_conn_max_interval;
 223         __u16           le_conn_latency;
 224         __u16           le_supv_timeout;
 225         __u16           le_def_tx_len;
 226         __u16           le_def_tx_time;
 227         __u16           le_max_tx_len;
 228         __u16           le_max_tx_time;
 229         __u16           le_max_rx_len;
 230         __u16           le_max_rx_time;
 231         __u16           discov_interleaved_timeout;
 232         __u16           conn_info_min_age;
 233         __u16           conn_info_max_age;
 234         __u8            ssp_debug_mode;
 235         __u32           clock;
 236
 237         __u16           devid_source;
 238         __u16           devid_vendor;
 239         __u16           devid_product;
 240         __u16           devid_version;
 241
 242         __u16           pkt_type;
 243         __u16           esco_type;
 244         __u16           link_policy;
 245         __u16           link_mode;
 246
 247         __u32           idle_timeout;
 248         __u16           sniff_min_interval;
 249         __u16           sniff_max_interval;
 250
 251         __u8            amp_status;
 252         __u32           amp_total_bw;
 253         __u32           amp_max_bw;
 254         __u32           amp_min_latency;
 255         __u32           amp_max_pdu;
 256         __u8            amp_type;
 257         __u16           amp_pal_cap;
 258         __u16           amp_assoc_size;
 259         __u32           amp_max_flush_to;
 260         __u32           amp_be_flush_to;
 261
 262         struct amp_assoc        loc_assoc;
 263
 264         __u8            flow_ctl_mode;
 265
 266         unsigned int    auto_accept_delay;
 267
 268         unsigned long   quirks;
 269
 270         atomic_t        cmd_cnt;
 271         unsigned int    acl_cnt;
 272         unsigned int    sco_cnt;
 273         unsigned int    le_cnt;
 274
 275         unsigned int    acl_mtu;
 276         unsigned int    sco_mtu;
 277         unsigned int    le_mtu;
 278         unsigned int    acl_pkts;
 279         unsigned int    sco_pkts;
 280         unsigned int    le_pkts;
 281
 282         __u16           block_len;
 283         __u16           block_mtu;
 284         __u16           num_blocks;
 285         __u16           block_cnt;
 286
 287         unsigned long   acl_last_tx;
 288         unsigned long   sco_last_tx;
 289         unsigned long   le_last_tx;
 290
 291         struct workqueue_struct *workqueue;
 292         struct workqueue_struct *req_workqueue;
 293
 294         struct work_struct      power_on;
 295         struct delayed_work     power_off;
 296
 297         __u16                   discov_timeout;
 298         struct delayed_work     discov_off;
 299
 300         struct delayed_work     service_cache;
 301
 302         struct delayed_work     cmd_timer;
 303
 304         struct work_struct      rx_work;
 305         struct work_struct      cmd_work;
 306         struct work_struct      tx_work;
 307
 308         struct sk_buff_head     rx_q;
 309         struct sk_buff_head     raw_q;
 310         struct sk_buff_head     cmd_q;
 311
 312         struct sk_buff          *recv_evt;
 313         struct sk_buff          *sent_cmd;
 314         struct sk_buff          *reassembly[NUM_REASSEMBLY];
 315
 316         struct mutex            req_lock;
 317         wait_queue_head_t       req_wait_q;
 318         __u32                   req_status;
 319         __u32                   req_result;
 320
 321         void                    *smp_data;
 322         void                    *smp_bredr_data;
 323
 324         struct discovery_state  discovery;
 325         struct hci_conn_hash    conn_hash;
 326
 327         struct list_head        mgmt_pending;
 328         struct list_head        blacklist;
 329         struct list_head        whitelist;
 330         struct list_head        uuids;
 331         struct list_head        link_keys;
 332         struct list_head        long_term_keys;
 333         struct list_head        identity_resolving_keys;
 334         struct list_head        remote_oob_data;
 335         struct list_head        le_white_list;
 336         struct list_head        le_conn_params;
 337         struct list_head        pend_le_conns;
 338         struct list_head        pend_le_reports;
 339
 340         struct hci_dev_stats    stat;
 341
 342         atomic_t                promisc;
 343
 344         struct dentry           *debugfs;
 345
 346         struct device           dev;
 347
 348         struct rfkill           *rfkill;
 349
 350         unsigned long           dbg_flags;
 351         unsigned long           dev_flags;
 352
 353         struct delayed_work     le_scan_disable;
 354
 355         __s8                    adv_tx_power;
 356         __u8                    adv_data[HCI_MAX_AD_LENGTH];
 357         __u8                    adv_data_len;
 358         __u8                    scan_rsp_data[HCI_MAX_AD_LENGTH];
 359         __u8                    scan_rsp_data_len;
 360
 361         __u8                    irk[16];
 362         __u32                   rpa_timeout;
 363         struct delayed_work     rpa_expired;
 364         bdaddr_t                rpa;
 365
 366         int (*open)(struct hci_dev *hdev);
 367         int (*close)(struct hci_dev *hdev);
 368         int (*flush)(struct hci_dev *hdev);
 369         int (*setup)(struct hci_dev *hdev);
 370         int (*send)(struct hci_dev *hdev, struct sk_buff *skb);
 371         void (*notify)(struct hci_dev *hdev, unsigned int evt);
 372         int (*set_bdaddr)(struct hci_dev *hdev, const bdaddr_t *bdaddr);
 373 };
 374
 375 #define HCI_PHY_HANDLE(handle)  (handle & 0xff)
 376
 377 struct hci_conn {
 378         struct list_head list;
 379
 380         atomic_t        refcnt;
 381
 382         bdaddr_t        dst;
 383         __u8            dst_type;
 384         bdaddr_t        src;
 385         __u8            src_type;
 386         bdaddr_t        init_addr;
 387         __u8            init_addr_type;
 388         bdaddr_t        resp_addr;
 389         __u8            resp_addr_type;
 390         __u16           handle;
 391         __u16           state;
 392         __u8            mode;
 393         __u8            type;
 394         __u8            role;
 395         bool            out;
 396         __u8            attempt;
 397         __u8            dev_class[3];
 398         __u8            features[HCI_MAX_PAGES][8];
 399         __u16           pkt_type;
 400         __u16           link_policy;
 401         __u8            key_type;
 402         __u8            auth_type;
 403         __u8            sec_level;
 404         __u8            pending_sec_level;
 405         __u8            pin_length;
 406         __u8            enc_key_size;
 407         __u8            io_capability;
 408         __u32           passkey_notify;
 409         __u8            passkey_entered;
 410         __u16           disc_timeout;
 411         __u16           conn_timeout;
 412         __u16           setting;
 413         __u16           le_conn_min_interval;
 414         __u16           le_conn_max_interval;
 415         __u16           le_conn_interval;
 416         __u16           le_conn_latency;
 417         __u16           le_supv_timeout;
 418         __u8            le_adv_data[HCI_MAX_AD_LENGTH];
 419         __u8            le_adv_data_len;
 420         __s8            rssi;
 421         __s8            tx_power;
 422         __s8            max_tx_power;
 423         unsigned long   flags;
 424
 425         __u32           clock;
 426         __u16           clock_accuracy;
 427
 428         unsigned long   conn_info_timestamp;
 429
 430         __u8            remote_cap;
 431         __u8            remote_auth;
 432         __u8            remote_id;
 433
 434         unsigned int    sent;
 435
 436         struct sk_buff_head data_q;
 437         struct list_head chan_list;
 438
 439         struct delayed_work disc_work;
 440         struct delayed_work auto_accept_work;
 441         struct delayed_work idle_work;
 442         struct delayed_work le_conn_timeout;
 443
 444         struct device   dev;
 445         struct dentry   *debugfs;
 446
 447         struct hci_dev  *hdev;
 448         void            *l2cap_data;
 449         void            *sco_data;
 450         struct amp_mgr  *amp_mgr;
 451
 452         struct hci_conn *link;
 453
 454         void (*connect_cfm_cb)  (struct hci_conn *conn, u8 status);
 455         void (*security_cfm_cb) (struct hci_conn *conn, u8 status);
 456         void (*disconn_cfm_cb)  (struct hci_conn *conn, u8 reason);
 457 };
 458
 459 struct hci_chan {
 460         struct list_head list;
 461         __u16 handle;
 462         struct hci_conn *conn;
 463         struct sk_buff_head data_q;
 464         unsigned int    sent;
 465         __u8            state;
 466 };
 467
 468 struct hci_conn_params {
 469         struct list_head list;
 470         struct list_head action;
 471
 472         bdaddr_t addr;
 473         u8 addr_type;
 474
 475         u16 conn_min_interval;
 476         u16 conn_max_interval;
 477         u16 conn_latency;
 478         u16 supervision_timeout;
 479
 480         enum {
 481                 HCI_AUTO_CONN_DISABLED,
 482                 HCI_AUTO_CONN_REPORT,
 483                 HCI_AUTO_CONN_DIRECT,
 484                 HCI_AUTO_CONN_ALWAYS,
 485                 HCI_AUTO_CONN_LINK_LOSS,
 486         } auto_connect;
 487
 488         struct hci_conn *conn;
 489 };
 490
 491 extern struct list_head hci_dev_list;
 492 extern struct list_head hci_cb_list;
 493 extern rwlock_t hci_dev_list_lock;
 494 extern rwlock_t hci_cb_list_lock;
 495
 496 /* ----- HCI interface to upper protocols ----- */
 497 int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr);
 498 void l2cap_connect_cfm(struct hci_conn *hcon, u8 status);
 499 int l2cap_disconn_ind(struct hci_conn *hcon);
 500 void l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason);
 501 int l2cap_security_cfm(struct hci_conn *hcon, u8 status, u8 encrypt);
 502 int l2cap_recv_acldata(struct hci_conn *hcon, struct sk_buff *skb, u16 flags);
 503
 504 int sco_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, __u8 *flags);
 505 void sco_connect_cfm(struct hci_conn *hcon, __u8 status);
 506 void sco_disconn_cfm(struct hci_conn *hcon, __u8 reason);
 507 int sco_recv_scodata(struct hci_conn *hcon, struct sk_buff *skb);
 508
 509 /* ----- Inquiry cache ----- */
 510 #define INQUIRY_CACHE_AGE_MAX   (HZ*30)   /* 30 seconds */
 511 #define INQUIRY_ENTRY_AGE_MAX   (HZ*60)   /* 60 seconds */
 512
 513 static inline void discovery_init(struct hci_dev *hdev)
 514 {
 515         hdev->discovery.state = DISCOVERY_STOPPED;
 516         INIT_LIST_HEAD(&hdev->discovery.all);
 517         INIT_LIST_HEAD(&hdev->discovery.unknown);
 518         INIT_LIST_HEAD(&hdev->discovery.resolve);
 519         hdev->discovery.report_invalid_rssi = true;
 520         hdev->discovery.rssi = HCI_RSSI_INVALID;
 521 }
 522
 523 static inline void hci_discovery_filter_clear(struct hci_dev *hdev)
 524 {
 525         hdev->discovery.report_invalid_rssi = true;
 526         hdev->discovery.rssi = HCI_RSSI_INVALID;
 527         hdev->discovery.uuid_count = 0;
 528         kfree(hdev->discovery.uuids);
 529         hdev->discovery.uuids = NULL;
 530 }
 531
 532 bool hci_discovery_active(struct hci_dev *hdev);
 533
 534 void hci_discovery_set_state(struct hci_dev *hdev, int state);
 535
 536 static inline int inquiry_cache_empty(struct hci_dev *hdev)
 537 {
 538         return list_empty(&hdev->discovery.all);
 539 }
 540
 541 static inline long inquiry_cache_age(struct hci_dev *hdev)
 542 {
 543         struct discovery_state *c = &hdev->discovery;
 544         return jiffies - c->timestamp;
 545 }
 546
 547 static inline long inquiry_entry_age(struct inquiry_entry *e)
 548 {
 549         return jiffies - e->timestamp;
 550 }
 551
 552 struct inquiry_entry *hci_inquiry_cache_lookup(struct hci_dev *hdev,
 553                                                bdaddr_t *bdaddr);
 554 struct inquiry_entry *hci_inquiry_cache_lookup_unknown(struct hci_dev *hdev,
 555                                                        bdaddr_t *bdaddr);
 556 struct inquiry_entry *hci_inquiry_cache_lookup_resolve(struct hci_dev *hdev,
 557                                                        bdaddr_t *bdaddr,
 558                                                        int state);
 559 void hci_inquiry_cache_update_resolve(struct hci_dev *hdev,
 560                                       struct inquiry_entry *ie);
 561 u32 hci_inquiry_cache_update(struct hci_dev *hdev, struct inquiry_data *data,
 562                              bool name_known);
 563 void hci_inquiry_cache_flush(struct hci_dev *hdev);
 564
 565 /* ----- HCI Connections ----- */
 566 enum {
 567         HCI_CONN_AUTH_PEND,
 568         HCI_CONN_REAUTH_PEND,
 569         HCI_CONN_ENCRYPT_PEND,
 570         HCI_CONN_RSWITCH_PEND,
 571         HCI_CONN_MODE_CHANGE_PEND,
 572         HCI_CONN_SCO_SETUP_PEND,
 573         HCI_CONN_MGMT_CONNECTED,
 574         HCI_CONN_SSP_ENABLED,
 575         HCI_CONN_SC_ENABLED,
 576         HCI_CONN_AES_CCM,
 577         HCI_CONN_POWER_SAVE,
 578         HCI_CONN_REMOTE_OOB,
 579         HCI_CONN_FLUSH_KEY,
 580         HCI_CONN_ENCRYPT,
 581         HCI_CONN_AUTH,
 582         HCI_CONN_SECURE,
 583         HCI_CONN_FIPS,
 584         HCI_CONN_STK_ENCRYPT,
 585         HCI_CONN_AUTH_INITIATOR,
 586         HCI_CONN_DROP,
 587         HCI_CONN_PARAM_REMOVAL_PEND,
 588         HCI_CONN_NEW_LINK_KEY,
 589 };
 590
 591 static inline bool hci_conn_ssp_enabled(struct hci_conn *conn)
 592 {
 593         struct hci_dev *hdev = conn->hdev;
 594         return test_bit(HCI_SSP_ENABLED, &hdev->dev_flags) &&
 595                test_bit(HCI_CONN_SSP_ENABLED, &conn->flags);
 596 }
 597
 598 static inline bool hci_conn_sc_enabled(struct hci_conn *conn)
 599 {
 600         struct hci_dev *hdev = conn->hdev;
 601         return test_bit(HCI_SC_ENABLED, &hdev->dev_flags) &&
 602                test_bit(HCI_CONN_SC_ENABLED, &conn->flags);
 603 }
 604
 605 static inline void hci_conn_hash_add(struct hci_dev *hdev, struct hci_conn *c)
 606 {
 607         struct hci_conn_hash *h = &hdev->conn_hash;
 608         list_add_rcu(&c->list, &h->list);
 609         switch (c->type) {
 610         case ACL_LINK:
 611                 h->acl_num++;
 612                 break;
 613         case AMP_LINK:
 614                 h->amp_num++;
 615                 break;
 616         case LE_LINK:
 617                 h->le_num++;
 618                 if (c->role == HCI_ROLE_SLAVE)
 619                         h->le_num_slave++;
 620                 break;
 621         case SCO_LINK:
 622         case ESCO_LINK:
 623                 h->sco_num++;
 624                 break;
 625         }
 626 }
 627
 628 static inline void hci_conn_hash_del(struct hci_dev *hdev, struct hci_conn *c)
 629 {
 630         struct hci_conn_hash *h = &hdev->conn_hash;
 631
 632         list_del_rcu(&c->list);
 633         synchronize_rcu();
 634
 635         switch (c->type) {
 636         case ACL_LINK:
 637                 h->acl_num--;
 638                 break;
 639         case AMP_LINK:
 640                 h->amp_num--;
 641                 break;
 642         case LE_LINK:
 643                 h->le_num--;
 644                 if (c->role == HCI_ROLE_SLAVE)
 645                         h->le_num_slave--;
 646                 break;
 647         case SCO_LINK:
 648         case ESCO_LINK:
 649                 h->sco_num--;
 650                 break;
 651         }
 652 }
 653
 654 static inline unsigned int hci_conn_num(struct hci_dev *hdev, __u8 type)
 655 {
 656         struct hci_conn_hash *h = &hdev->conn_hash;
 657         switch (type) {
 658         case ACL_LINK:
 659                 return h->acl_num;
 660         case AMP_LINK:
 661                 return h->amp_num;
 662         case LE_LINK:
 663                 return h->le_num;
 664         case SCO_LINK:
 665         case ESCO_LINK:
 666                 return h->sco_num;
 667         default:
 668                 return 0;
 669         }
 670 }
 671
 672 static inline unsigned int hci_conn_count(struct hci_dev *hdev)
 673 {
 674         struct hci_conn_hash *c = &hdev->conn_hash;
 675
 676         return c->acl_num + c->amp_num + c->sco_num + c->le_num;
 677 }
 678
 679 static inline __u8 hci_conn_lookup_type(struct hci_dev *hdev, __u16 handle)
 680 {
 681         struct hci_conn_hash *h = &hdev->conn_hash;
 682         struct hci_conn *c;
 683         __u8 type = INVALID_LINK;
 684
 685         rcu_read_lock();
 686
 687         list_for_each_entry_rcu(c, &h->list, list) {
 688                 if (c->handle == handle) {
 689                         type = c->type;
 690                         break;
 691                 }
 692         }
 693
 694         rcu_read_unlock();
 695
 696         return type;
 697 }
 698
 699 static inline struct hci_conn *hci_conn_hash_lookup_handle(struct hci_dev *hdev,
 700                                                                 __u16 handle)
 701 {
 702         struct hci_conn_hash *h = &hdev->conn_hash;
 703         struct hci_conn  *c;
 704
 705         rcu_read_lock();
 706
 707         list_for_each_entry_rcu(c, &h->list, list) {
 708                 if (c->handle == handle) {
 709                         rcu_read_unlock();
 710                         return c;
 711                 }
 712         }
 713         rcu_read_unlock();
 714
 715         return NULL;
 716 }
 717
 718 static inline struct hci_conn *hci_conn_hash_lookup_ba(struct hci_dev *hdev,
 719                                                         __u8 type, bdaddr_t *ba)
 720 {
 721         struct hci_conn_hash *h = &hdev->conn_hash;
 722         struct hci_conn  *c;
 723
 724         rcu_read_lock();
 725
 726         list_for_each_entry_rcu(c, &h->list, list) {
 727                 if (c->type == type && !bacmp(&c->dst, ba)) {
 728                         rcu_read_unlock();
 729                         return c;
 730                 }
 731         }
 732
 733         rcu_read_unlock();
 734
 735         return NULL;
 736 }
 737
 738 static inline struct hci_conn *hci_conn_hash_lookup_state(struct hci_dev *hdev,
 739                                                         __u8 type, __u16 state)
 740 {
 741         struct hci_conn_hash *h = &hdev->conn_hash;
 742         struct hci_conn  *c;
 743
 744         rcu_read_lock();
 745
 746         list_for_each_entry_rcu(c, &h->list, list) {
 747                 if (c->type == type && c->state == state) {
 748                         rcu_read_unlock();
 749                         return c;
 750                 }
 751         }
 752
 753         rcu_read_unlock();
 754
 755         return NULL;
 756 }
 757
 758 int hci_disconnect(struct hci_conn *conn, __u8 reason);
 759 bool hci_setup_sync(struct hci_conn *conn, __u16 handle);
 760 void hci_sco_setup(struct hci_conn *conn, __u8 status);
 761
 762 struct hci_conn *hci_conn_add(struct hci_dev *hdev, int type, bdaddr_t *dst,
 763                               u8 role);
 764 int hci_conn_del(struct hci_conn *conn);
 765 void hci_conn_hash_flush(struct hci_dev *hdev);
 766 void hci_conn_check_pending(struct hci_dev *hdev);
 767
 768 struct hci_chan *hci_chan_create(struct hci_conn *conn);
 769 void hci_chan_del(struct hci_chan *chan);
 770 void hci_chan_list_flush(struct hci_conn *conn);
 771 struct hci_chan *hci_chan_lookup_handle(struct hci_dev *hdev, __u16 handle);
 772
 773 struct hci_conn *hci_connect_le(struct hci_dev *hdev, bdaddr_t *dst,
 774                                 u8 dst_type, u8 sec_level, u16 conn_timeout,
 775                                 u8 role);
 776 struct hci_conn *hci_connect_acl(struct hci_dev *hdev, bdaddr_t *dst,
 777                                  u8 sec_level, u8 auth_type);
 778 struct hci_conn *hci_connect_sco(struct hci_dev *hdev, int type, bdaddr_t *dst,
 779                                  __u16 setting);
 780 int hci_conn_check_link_mode(struct hci_conn *conn);
 781 int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 782 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type,
 783                       bool initiator);
 784 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
 785
 786 void hci_conn_enter_active_mode(struct hci_conn *conn, __u8 force_active);
 787
 788 void hci_le_conn_failed(struct hci_conn *conn, u8 status);
 789
 790 /*
 791  * hci_conn_get() and hci_conn_put() are used to control the life-time of an
 792  * "hci_conn" object. They do not guarantee that the hci_conn object is running,
 793  * working or anything else. They just guarantee that the object is available
 794  * and can be dereferenced. So you can use its locks, local variables and any
 795  * other constant data.
 796  * Before accessing runtime data, you _must_ lock the object and then check that
 797  * it is still running. As soon as you release the locks, the connection might
 798  * get dropped, though.
 799  *
 800  * On the other hand, hci_conn_hold() and hci_conn_drop() are used to control
 801  * how long the underlying connection is held. So every channel that runs on the
 802  * hci_conn object calls this to prevent the connection from disappearing. As
 803  * long as you hold a device, you must also guarantee that you have a valid
 804  * reference to the device via hci_conn_get() (or the initial reference from
 805  * hci_conn_add()).
 806  * The hold()/drop() ref-count is known to drop below 0 sometimes, which doesn't
 807  * break because nobody cares for that. But this means, we cannot use
 808  * _get()/_drop() in it, but require the caller to have a valid ref (FIXME).
 809  */
 810
 811 static inline struct hci_conn *hci_conn_get(struct hci_conn *conn)
 812 {
 813         get_device(&conn->dev);
 814         return conn;
 815 }
 816
 817 static inline void hci_conn_put(struct hci_conn *conn)
 818 {
 819         put_device(&conn->dev);
 820 }
 821
 822 static inline void hci_conn_hold(struct hci_conn *conn)
 823 {
 824         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 825
 826         atomic_inc(&conn->refcnt);
 827         cancel_delayed_work(&conn->disc_work);
 828 }
 829
 830 static inline void hci_conn_drop(struct hci_conn *conn)
 831 {
 832         BT_DBG("hcon %p orig refcnt %d", conn, atomic_read(&conn->refcnt));
 833
 834         if (atomic_dec_and_test(&conn->refcnt)) {
 835                 unsigned long timeo;
 836
 837                 switch (conn->type) {
 838                 case ACL_LINK:
 839                 case LE_LINK:
 840                         cancel_delayed_work(&conn->idle_work);
 841                         if (conn->state == BT_CONNECTED) {
 842                                 timeo = conn->disc_timeout;
 843                                 if (!conn->out)
 844                                         timeo *= 2;
 845                         } else {
 846                                 timeo = 0;
 847                         }
 848                         break;
 849
 850                 case AMP_LINK:
 851                         timeo = conn->disc_timeout;
 852                         break;
 853
 854                 default:
 855                         timeo = 0;
 856                         break;
 857                 }
 858
 859                 cancel_delayed_work(&conn->disc_work);
 860                 queue_delayed_work(conn->hdev->workqueue,
 861                                    &conn->disc_work, timeo);
 862         }
 863 }
 864
 865 /* ----- HCI Devices ----- */
 866 static inline void hci_dev_put(struct hci_dev *d)
 867 {
 868         BT_DBG("%s orig refcnt %d", d->name,
 869                atomic_read(&d->dev.kobj.kref.refcount));
 870
 871         put_device(&d->dev);
 872 }
 873
 874 static inline struct hci_dev *hci_dev_hold(struct hci_dev *d)
 875 {
 876         BT_DBG("%s orig refcnt %d", d->name,
 877                atomic_read(&d->dev.kobj.kref.refcount));
 878
 879         get_device(&d->dev);
 880         return d;
 881 }
 882
 883 #define hci_dev_lock(d)         mutex_lock(&d->lock)
 884 #define hci_dev_unlock(d)       mutex_unlock(&d->lock)
 885
 886 #define to_hci_dev(d) container_of(d, struct hci_dev, dev)
 887 #define to_hci_conn(c) container_of(c, struct hci_conn, dev)
 888
 889 static inline void *hci_get_drvdata(struct hci_dev *hdev)
 890 {
 891         return dev_get_drvdata(&hdev->dev);
 892 }
 893
 894 static inline void hci_set_drvdata(struct hci_dev *hdev, void *data)
 895 {
 896         dev_set_drvdata(&hdev->dev, data);
 897 }
 898
 899 struct hci_dev *hci_dev_get(int index);
 900 struct hci_dev *hci_get_route(bdaddr_t *dst, bdaddr_t *src);
 901
 902 struct hci_dev *hci_alloc_dev(void);
 903 void hci_free_dev(struct hci_dev *hdev);
 904 int hci_register_dev(struct hci_dev *hdev);
 905 void hci_unregister_dev(struct hci_dev *hdev);
 906 int hci_suspend_dev(struct hci_dev *hdev);
 907 int hci_resume_dev(struct hci_dev *hdev);
 908 int hci_reset_dev(struct hci_dev *hdev);
 909 int hci_dev_open(__u16 dev);
 910 int hci_dev_close(__u16 dev);
 911 int hci_dev_reset(__u16 dev);
 912 int hci_dev_reset_stat(__u16 dev);
 913 int hci_dev_cmd(unsigned int cmd, void __user *arg);
 914 int hci_get_dev_list(void __user *arg);
 915 int hci_get_dev_info(void __user *arg);
 916 int hci_get_conn_list(void __user *arg);
 917 int hci_get_conn_info(struct hci_dev *hdev, void __user *arg);
 918 int hci_get_auth_info(struct hci_dev *hdev, void __user *arg);
 919 int hci_inquiry(void __user *arg);
 920
 921 struct bdaddr_list *hci_bdaddr_list_lookup(struct list_head *list,
 922                                            bdaddr_t *bdaddr, u8 type);
 923 int hci_bdaddr_list_add(struct list_head *list, bdaddr_t *bdaddr, u8 type);
 924 int hci_bdaddr_list_del(struct list_head *list, bdaddr_t *bdaddr, u8 type);
 925 void hci_bdaddr_list_clear(struct list_head *list);
 926
 927 struct hci_conn_params *hci_conn_params_lookup(struct hci_dev *hdev,
 928                                                bdaddr_t *addr, u8 addr_type);
 929 struct hci_conn_params *hci_conn_params_add(struct hci_dev *hdev,
 930                                             bdaddr_t *addr, u8 addr_type);
 931 void hci_conn_params_del(struct hci_dev *hdev, bdaddr_t *addr, u8 addr_type);
 932 void hci_conn_params_clear_all(struct hci_dev *hdev);
 933 void hci_conn_params_clear_disabled(struct hci_dev *hdev);
 934
 935 struct hci_conn_params *hci_pend_le_action_lookup(struct list_head *list,
 936                                                   bdaddr_t *addr,
 937                                                   u8 addr_type);
 938
 939 void hci_uuids_clear(struct hci_dev *hdev);
 940
 941 void hci_link_keys_clear(struct hci_dev *hdev);
 942 struct link_key *hci_find_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 943 struct link_key *hci_add_link_key(struct hci_dev *hdev, struct hci_conn *conn,
 944                                   bdaddr_t *bdaddr, u8 *val, u8 type,
 945                                   u8 pin_len, bool *persistent);
 946 struct smp_ltk *hci_add_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
 947                             u8 addr_type, u8 type, u8 authenticated,
 948                             u8 tk[16], u8 enc_size, __le16 ediv, __le64 rand);
 949 struct smp_ltk *hci_find_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr,
 950                              u8 addr_type, u8 role);
 951 int hci_remove_ltk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 bdaddr_type);
 952 void hci_smp_ltks_clear(struct hci_dev *hdev);
 953 int hci_remove_link_key(struct hci_dev *hdev, bdaddr_t *bdaddr);
 954
 955 struct smp_irk *hci_find_irk_by_rpa(struct hci_dev *hdev, bdaddr_t *rpa);
 956 struct smp_irk *hci_find_irk_by_addr(struct hci_dev *hdev, bdaddr_t *bdaddr,
 957                                      u8 addr_type);
 958 struct smp_irk *hci_add_irk(struct hci_dev *hdev, bdaddr_t *bdaddr,
 959                             u8 addr_type, u8 val[16], bdaddr_t *rpa);
 960 void hci_remove_irk(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 addr_type);
 961 void hci_smp_irks_clear(struct hci_dev *hdev);
 962
 963 void hci_remote_oob_data_clear(struct hci_dev *hdev);
 964 struct oob_data *hci_find_remote_oob_data(struct hci_dev *hdev,
 965                                           bdaddr_t *bdaddr, u8 bdaddr_type);
 966 int hci_add_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
 967                             u8 bdaddr_type, u8 *hash192, u8 *rand192,
 968                             u8 *hash256, u8 *rand256);
 969 int hci_remove_remote_oob_data(struct hci_dev *hdev, bdaddr_t *bdaddr,
 970                                u8 bdaddr_type);
 971
 972 void hci_event_packet(struct hci_dev *hdev, struct sk_buff *skb);
 973
 974 int hci_recv_frame(struct hci_dev *hdev, struct sk_buff *skb);
 975 int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count);
 976
 977 void hci_init_sysfs(struct hci_dev *hdev);
 978 void hci_conn_init_sysfs(struct hci_conn *conn);
 979 void hci_conn_add_sysfs(struct hci_conn *conn);
 980 void hci_conn_del_sysfs(struct hci_conn *conn);
 981
 982 #define SET_HCIDEV_DEV(hdev, pdev) ((hdev)->dev.parent = (pdev))
 983
 984 /* ----- LMP capabilities ----- */
 985 #define lmp_encrypt_capable(dev)   ((dev)->features[0][0] & LMP_ENCRYPT)
 986 #define lmp_rswitch_capable(dev)   ((dev)->features[0][0] & LMP_RSWITCH)
 987 #define lmp_hold_capable(dev)      ((dev)->features[0][0] & LMP_HOLD)
 988 #define lmp_sniff_capable(dev)     ((dev)->features[0][0] & LMP_SNIFF)
 989 #define lmp_park_capable(dev)      ((dev)->features[0][1] & LMP_PARK)
 990 #define lmp_inq_rssi_capable(dev)  ((dev)->features[0][3] & LMP_RSSI_INQ)
 991 #define lmp_esco_capable(dev)      ((dev)->features[0][3] & LMP_ESCO)
 992 #define lmp_bredr_capable(dev)     (!((dev)->features[0][4] & LMP_NO_BREDR))
 993 #define lmp_le_capable(dev)        ((dev)->features[0][4] & LMP_LE)
 994 #define lmp_sniffsubr_capable(dev) ((dev)->features[0][5] & LMP_SNIFF_SUBR)
 995 #define lmp_pause_enc_capable(dev) ((dev)->features[0][5] & LMP_PAUSE_ENC)
 996 #define lmp_ext_inq_capable(dev)   ((dev)->features[0][6] & LMP_EXT_INQ)
 997 #define lmp_le_br_capable(dev)     (!!((dev)->features[0][6] & LMP_SIMUL_LE_BR))
 998 #define lmp_ssp_capable(dev)       ((dev)->features[0][6] & LMP_SIMPLE_PAIR)
 999 #define lmp_no_flush_capable(dev)  ((dev)->features[0][6] & LMP_NO_FLUSH)
1000 #define lmp_lsto_capable(dev)      ((dev)->features[0][7] & LMP_LSTO)
1001 #define lmp_inq_tx_pwr_capable(dev) ((dev)->features[0][7] & LMP_INQ_TX_PWR)
1002 #define lmp_ext_feat_capable(dev)  ((dev)->features[0][7] & LMP_EXTFEATURES)
1003 #define lmp_transp_capable(dev)    ((dev)->features[0][2] & LMP_TRANSPARENT)
1004
1005 /* ----- Extended LMP capabilities ----- */
1006 #define lmp_csb_master_capable(dev) ((dev)->features[2][0] & LMP_CSB_MASTER)
1007 #define lmp_csb_slave_capable(dev)  ((dev)->features[2][0] & LMP_CSB_SLAVE)
1008 #define lmp_sync_train_capable(dev) ((dev)->features[2][0] & LMP_SYNC_TRAIN)
1009 #define lmp_sync_scan_capable(dev)  ((dev)->features[2][0] & LMP_SYNC_SCAN)
1010 #define lmp_sc_capable(dev)         ((dev)->features[2][1] & LMP_SC)
1011 #define lmp_ping_capable(dev)       ((dev)->features[2][1] & LMP_PING)
1012
1013 /* ----- Host capabilities ----- */
1014 #define lmp_host_ssp_capable(dev)  ((dev)->features[1][0] & LMP_HOST_SSP)
1015 #define lmp_host_sc_capable(dev)   ((dev)->features[1][0] & LMP_HOST_SC)
1016 #define lmp_host_le_capable(dev)   (!!((dev)->features[1][0] & LMP_HOST_LE))
1017 #define lmp_host_le_br_capable(dev) (!!((dev)->features[1][0] & LMP_HOST_LE_BREDR))
1018
1019 #define hdev_is_powered(hdev) (test_bit(HCI_UP, &hdev->flags) && \
1020                                 !test_bit(HCI_AUTO_OFF, &hdev->dev_flags))
1021 #define bredr_sc_enabled(dev) (lmp_sc_capable(dev) && \
1022                                test_bit(HCI_SC_ENABLED, &(dev)->dev_flags))
1023
1024 /* ----- HCI protocols ----- */
1025 #define HCI_PROTO_DEFER             0x01
1026
1027 static inline int hci_proto_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr,
1028                                         __u8 type, __u8 *flags)
1029 {
1030         switch (type) {
1031         case ACL_LINK:
1032                 return l2cap_connect_ind(hdev, bdaddr);
1033
1034         case SCO_LINK:
1035         case ESCO_LINK:
1036                 return sco_connect_ind(hdev, bdaddr, flags);
1037
1038         default:
1039                 BT_ERR("unknown link type %d", type);
1040                 return -EINVAL;
1041         }
1042 }
1043
1044 static inline void hci_proto_connect_cfm(struct hci_conn *conn, __u8 status)
1045 {
1046         switch (conn->type) {
1047         case ACL_LINK:
1048         case LE_LINK:
1049                 l2cap_connect_cfm(conn, status);
1050                 break;
1051
1052         case SCO_LINK:
1053         case ESCO_LINK:
1054                 sco_connect_cfm(conn, status);
1055                 break;
1056
1057         default:
1058                 BT_ERR("unknown link type %d", conn->type);
1059                 break;
1060         }
1061
1062         if (conn->connect_cfm_cb)
1063                 conn->connect_cfm_cb(conn, status);
1064 }
1065
1066 static inline int hci_proto_disconn_ind(struct hci_conn *conn)
1067 {
1068         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1069                 return HCI_ERROR_REMOTE_USER_TERM;
1070
1071         return l2cap_disconn_ind(conn);
1072 }
1073
1074 static inline void hci_proto_disconn_cfm(struct hci_conn *conn, __u8 reason)
1075 {
1076         switch (conn->type) {
1077         case ACL_LINK:
1078         case LE_LINK:
1079                 l2cap_disconn_cfm(conn, reason);
1080                 break;
1081
1082         case SCO_LINK:
1083         case ESCO_LINK:
1084                 sco_disconn_cfm(conn, reason);
1085                 break;
1086
1087         /* L2CAP would be handled for BREDR chan */
1088         case AMP_LINK:
1089                 break;
1090
1091         default:
1092                 BT_ERR("unknown link type %d", conn->type);
1093                 break;
1094         }
1095
1096         if (conn->disconn_cfm_cb)
1097                 conn->disconn_cfm_cb(conn, reason);
1098 }
1099
1100 static inline void hci_proto_auth_cfm(struct hci_conn *conn, __u8 status)
1101 {
1102         __u8 encrypt;
1103
1104         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1105                 return;
1106
1107         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1108                 return;
1109
1110         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1111         l2cap_security_cfm(conn, status, encrypt);
1112
1113         if (conn->security_cfm_cb)
1114                 conn->security_cfm_cb(conn, status);
1115 }
1116
1117 static inline void hci_proto_encrypt_cfm(struct hci_conn *conn, __u8 status,
1118                                                                 __u8 encrypt)
1119 {
1120         if (conn->type != ACL_LINK && conn->type != LE_LINK)
1121                 return;
1122
1123         l2cap_security_cfm(conn, status, encrypt);
1124
1125         if (conn->security_cfm_cb)
1126                 conn->security_cfm_cb(conn, status);
1127 }
1128
1129 /* ----- HCI callbacks ----- */
1130 struct hci_cb {
1131         struct list_head list;
1132
1133         char *name;
1134
1135         void (*security_cfm)    (struct hci_conn *conn, __u8 status,
1136                                                                 __u8 encrypt);
1137         void (*key_change_cfm)  (struct hci_conn *conn, __u8 status);
1138         void (*role_switch_cfm) (struct hci_conn *conn, __u8 status, __u8 role);
1139 };
1140
1141 static inline void hci_auth_cfm(struct hci_conn *conn, __u8 status)
1142 {
1143         struct hci_cb *cb;
1144         __u8 encrypt;
1145
1146         hci_proto_auth_cfm(conn, status);
1147
1148         if (test_bit(HCI_CONN_ENCRYPT_PEND, &conn->flags))
1149                 return;
1150
1151         encrypt = test_bit(HCI_CONN_ENCRYPT, &conn->flags) ? 0x01 : 0x00;
1152
1153         read_lock(&hci_cb_list_lock);
1154         list_for_each_entry(cb, &hci_cb_list, list) {
1155                 if (cb->security_cfm)
1156                         cb->security_cfm(conn, status, encrypt);
1157         }
1158         read_unlock(&hci_cb_list_lock);
1159 }
1160
1161 static inline void hci_encrypt_cfm(struct hci_conn *conn, __u8 status,
1162                                                                 __u8 encrypt)
1163 {
1164         struct hci_cb *cb;
1165
1166         if (conn->sec_level == BT_SECURITY_SDP)
1167                 conn->sec_level = BT_SECURITY_LOW;
1168
1169         if (conn->pending_sec_level > conn->sec_level)
1170                 conn->sec_level = conn->pending_sec_level;
1171
1172         hci_proto_encrypt_cfm(conn, status, encrypt);
1173
1174         read_lock(&hci_cb_list_lock);
1175         list_for_each_entry(cb, &hci_cb_list, list) {
1176                 if (cb->security_cfm)
1177                         cb->security_cfm(conn, status, encrypt);
1178         }
1179         read_unlock(&hci_cb_list_lock);
1180 }
1181
1182 static inline void hci_key_change_cfm(struct hci_conn *conn, __u8 status)
1183 {
1184         struct hci_cb *cb;
1185
1186         read_lock(&hci_cb_list_lock);
1187         list_for_each_entry(cb, &hci_cb_list, list) {
1188                 if (cb->key_change_cfm)
1189                         cb->key_change_cfm(conn, status);
1190         }
1191         read_unlock(&hci_cb_list_lock);
1192 }
1193
1194 static inline void hci_role_switch_cfm(struct hci_conn *conn, __u8 status,
1195                                                                 __u8 role)
1196 {
1197         struct hci_cb *cb;
1198
1199         read_lock(&hci_cb_list_lock);
1200         list_for_each_entry(cb, &hci_cb_list, list) {
1201                 if (cb->role_switch_cfm)
1202                         cb->role_switch_cfm(conn, status, role);
1203         }
1204         read_unlock(&hci_cb_list_lock);
1205 }
1206
1207 static inline bool eir_has_data_type(u8 *data, size_t data_len, u8 type)
1208 {
1209         size_t parsed = 0;
1210
1211         if (data_len < 2)
1212                 return false;
1213
1214         while (parsed < data_len - 1) {
1215                 u8 field_len = data[0];
1216
1217                 if (field_len == 0)
1218                         break;
1219
1220                 parsed += field_len + 1;
1221
1222                 if (parsed > data_len)
1223                         break;
1224
1225                 if (data[1] == type)
1226                         return true;
1227
1228                 data += field_len + 1;
1229         }
1230
1231         return false;
1232 }
1233
1234 static inline bool hci_bdaddr_is_rpa(bdaddr_t *bdaddr, u8 addr_type)
1235 {
1236         if (addr_type != ADDR_LE_DEV_RANDOM)
1237                 return false;
1238
1239         if ((bdaddr->b[5] & 0xc0) == 0x40)
1240                return true;
1241
1242         return false;
1243 }
1244
1245 static inline bool hci_is_identity_address(bdaddr_t *addr, u8 addr_type)
1246 {
1247         if (addr_type == ADDR_LE_DEV_PUBLIC)
1248                 return true;
1249
1250         /* Check for Random Static address type */
1251         if ((addr->b[5] & 0xc0) == 0xc0)
1252                 return true;
1253
1254         return false;
1255 }
1256
1257 static inline struct smp_irk *hci_get_irk(struct hci_dev *hdev,
1258                                           bdaddr_t *bdaddr, u8 addr_type)
1259 {
1260         if (!hci_bdaddr_is_rpa(bdaddr, addr_type))
1261                 return NULL;
1262
1263         return hci_find_irk_by_rpa(hdev, bdaddr);
1264 }
1265
1266 static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
1267                                         u16 to_multiplier)
1268 {
1269         u16 max_latency;
1270
1271         if (min > max || min < 6 || max > 3200)
1272                 return -EINVAL;
1273
1274         if (to_multiplier < 10 || to_multiplier > 3200)
1275                 return -EINVAL;
1276
1277         if (max >= to_multiplier * 8)
1278                 return -EINVAL;
1279
1280         max_latency = (to_multiplier * 8 / max) - 1;
1281         if (latency > 499 || latency > max_latency)
1282                 return -EINVAL;
1283
1284         return 0;
1285 }
1286
1287 int hci_register_cb(struct hci_cb *hcb);
1288 int hci_unregister_cb(struct hci_cb *hcb);
1289
1290 bool hci_req_pending(struct hci_dev *hdev);
1291
1292 struct sk_buff *__hci_cmd_sync(struct hci_dev *hdev, u16 opcode, u32 plen,
1293                                const void *param, u32 timeout);
1294 struct sk_buff *__hci_cmd_sync_ev(struct hci_dev *hdev, u16 opcode, u32 plen,
1295                                   const void *param, u8 event, u32 timeout);
1296
1297 int hci_send_cmd(struct hci_dev *hdev, __u16 opcode, __u32 plen,
1298                  const void *param);
1299 void hci_send_acl(struct hci_chan *chan, struct sk_buff *skb, __u16 flags);
1300 void hci_send_sco(struct hci_conn *conn, struct sk_buff *skb);
1301
1302 void *hci_sent_cmd_data(struct hci_dev *hdev, __u16 opcode);
1303
1304 /* ----- HCI Sockets ----- */
1305 void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb);
1306 void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk);
1307 void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb);
1308
1309 void hci_sock_dev_event(struct hci_dev *hdev, int event);
1310
1311 /* Management interface */
1312 #define DISCOV_TYPE_BREDR               (BIT(BDADDR_BREDR))
1313 #define DISCOV_TYPE_LE                  (BIT(BDADDR_LE_PUBLIC) | \
1314                                          BIT(BDADDR_LE_RANDOM))
1315 #define DISCOV_TYPE_INTERLEAVED         (BIT(BDADDR_BREDR) | \
1316                                          BIT(BDADDR_LE_PUBLIC) | \
1317                                          BIT(BDADDR_LE_RANDOM))
1318
1319 /* These LE scan and inquiry parameters were chosen according to LE General
1320  * Discovery Procedure specification.
1321  */
1322 #define DISCOV_LE_SCAN_WIN              0x12
1323 #define DISCOV_LE_SCAN_INT              0x12
1324 #define DISCOV_LE_TIMEOUT               10240   /* msec */
1325 #define DISCOV_INTERLEAVED_TIMEOUT      5120    /* msec */
1326 #define DISCOV_INTERLEAVED_INQUIRY_LEN  0x04
1327 #define DISCOV_BREDR_INQUIRY_LEN        0x08
1328
1329 int mgmt_control(struct sock *sk, struct msghdr *msg, size_t len);
1330 int mgmt_new_settings(struct hci_dev *hdev);
1331 void mgmt_index_added(struct hci_dev *hdev);
1332 void mgmt_index_removed(struct hci_dev *hdev);
1333 void mgmt_set_powered_failed(struct hci_dev *hdev, int err);
1334 int mgmt_powered(struct hci_dev *hdev, u8 powered);
1335 int mgmt_update_adv_data(struct hci_dev *hdev);
1336 void mgmt_discoverable_timeout(struct hci_dev *hdev);
1337 void mgmt_new_link_key(struct hci_dev *hdev, struct link_key *key,
1338                        bool persistent);
1339 void mgmt_device_connected(struct hci_dev *hdev, struct hci_conn *conn,
1340                            u32 flags, u8 *name, u8 name_len);
1341 void mgmt_device_disconnected(struct hci_dev *hdev, bdaddr_t *bdaddr,
1342                               u8 link_type, u8 addr_type, u8 reason,
1343                               bool mgmt_connected);
1344 void mgmt_disconnect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr,
1345                             u8 link_type, u8 addr_type, u8 status);
1346 void mgmt_connect_failed(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1347                          u8 addr_type, u8 status);
1348 void mgmt_pin_code_request(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 secure);
1349 void mgmt_pin_code_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1350                                   u8 status);
1351 void mgmt_pin_code_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1352                                       u8 status);
1353 int mgmt_user_confirm_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1354                               u8 link_type, u8 addr_type, u32 value,
1355                               u8 confirm_hint);
1356 int mgmt_user_confirm_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1357                                      u8 link_type, u8 addr_type, u8 status);
1358 int mgmt_user_confirm_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1359                                          u8 link_type, u8 addr_type, u8 status);
1360 int mgmt_user_passkey_request(struct hci_dev *hdev, bdaddr_t *bdaddr,
1361                               u8 link_type, u8 addr_type);
1362 int mgmt_user_passkey_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1363                                      u8 link_type, u8 addr_type, u8 status);
1364 int mgmt_user_passkey_neg_reply_complete(struct hci_dev *hdev, bdaddr_t *bdaddr,
1365                                          u8 link_type, u8 addr_type, u8 status);
1366 int mgmt_user_passkey_notify(struct hci_dev *hdev, bdaddr_t *bdaddr,
1367                              u8 link_type, u8 addr_type, u32 passkey,
1368                              u8 entered);
1369 void mgmt_auth_failed(struct hci_conn *conn, u8 status);
1370 void mgmt_auth_enable_complete(struct hci_dev *hdev, u8 status);
1371 void mgmt_ssp_enable_complete(struct hci_dev *hdev, u8 enable, u8 status);
1372 void mgmt_set_class_of_dev_complete(struct hci_dev *hdev, u8 *dev_class,
1373                                     u8 status);
1374 void mgmt_set_local_name_complete(struct hci_dev *hdev, u8 *name, u8 status);
1375 void mgmt_read_local_oob_data_complete(struct hci_dev *hdev, u8 *hash192,
1376                                        u8 *rand192, u8 *hash256, u8 *rand256,
1377                                        u8 status);
1378 void mgmt_device_found(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1379                        u8 addr_type, u8 *dev_class, s8 rssi, u32 flags,
1380                        u8 *eir, u16 eir_len, u8 *scan_rsp, u8 scan_rsp_len);
1381 void mgmt_remote_name(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 link_type,
1382                       u8 addr_type, s8 rssi, u8 *name, u8 name_len);
1383 void mgmt_discovering(struct hci_dev *hdev, u8 discovering);
1384 bool mgmt_powering_down(struct hci_dev *hdev);
1385 void mgmt_new_ltk(struct hci_dev *hdev, struct smp_ltk *key, bool persistent);
1386 void mgmt_new_irk(struct hci_dev *hdev, struct smp_irk *irk);
1387 void mgmt_new_csrk(struct hci_dev *hdev, struct smp_csrk *csrk,
1388                    bool persistent);
1389 void mgmt_new_conn_param(struct hci_dev *hdev, bdaddr_t *bdaddr,
1390                          u8 bdaddr_type, u8 store_hint, u16 min_interval,
1391                          u16 max_interval, u16 latency, u16 timeout);
1392 void mgmt_reenable_advertising(struct hci_dev *hdev);
1393 void mgmt_smp_complete(struct hci_conn *conn, bool complete);
1394
1395 u8 hci_le_conn_update(struct hci_conn *conn, u16 min, u16 max, u16 latency,
1396                       u16 to_multiplier);
1397 void hci_le_start_enc(struct hci_conn *conn, __le16 ediv, __le64 rand,
1398                                                         __u8 ltk[16]);
1399
1400 void hci_copy_identity_address(struct hci_dev *hdev, bdaddr_t *bdaddr,
1401                                u8 *bdaddr_type);
1402
1403 #define SCO_AIRMODE_MASK       0x0003
1404 #define SCO_AIRMODE_CVSD       0x0000
1405 #define SCO_AIRMODE_TRANSP     0x0003
1406
1407 #endif /* __HCI_CORE_H */