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      1 /******************************************************************************
      2  *
      3  *  Copyright (C) 1999-2012 Broadcom Corporation
      4  *
      5  *  Licensed under the Apache License, Version 2.0 (the "License");
      6  *  you may not use this file except in compliance with the License.
      7  *  You may obtain a copy of the License at:
      8  *
      9  *  http://www.apache.org/licenses/LICENSE-2.0
     10  *
     11  *  Unless required by applicable law or agreed to in writing, software
     12  *  distributed under the License is distributed on an "AS IS" BASIS,
     13  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14  *  See the License for the specific language governing permissions and
     15  *  limitations under the License.
     16  *
     17  ******************************************************************************/
     18 
     19 #ifndef  GATT_INT_H
     20 #define  GATT_INT_H
     21 
     22 #include "bt_target.h"
     23 
     24 #include "osi/include/fixed_queue.h"
     25 #include "bt_trace.h"
     26 #include "gatt_api.h"
     27 #include "btm_ble_api.h"
     28 #include "btu.h"
     29 
     30 #include <string.h>
     31 
     32 
     33 #define GATT_CREATE_CONN_ID(tcb_idx, gatt_if)  ((UINT16) ((((UINT8)(tcb_idx) ) << 8) | ((UINT8) (gatt_if))))
     34 #define GATT_GET_TCB_IDX(conn_id)  ((UINT8) (((UINT16) (conn_id)) >> 8))
     35 #define GATT_GET_GATT_IF(conn_id)  ((tGATT_IF)((UINT8) (conn_id)))
     36 
     37 #define GATT_GET_SR_REG_PTR(index) (&gatt_cb.sr_reg[(UINT8) (index)]);
     38 #define GATT_TRANS_ID_MAX                   0x0fffffff      /* 4 MSB is reserved */
     39 
     40 /* security action for GATT write and read request */
     41 #define GATT_SEC_NONE              0
     42 #define GATT_SEC_OK                1
     43 #define GATT_SEC_SIGN_DATA         2   /* compute the signature for the write cmd */
     44 #define GATT_SEC_ENCRYPT           3    /* encrypt the link with current key */
     45 #define GATT_SEC_ENCRYPT_NO_MITM   4    /* unauthenticated encryption or better */
     46 #define GATT_SEC_ENCRYPT_MITM      5    /* authenticated encryption */
     47 #define GATT_SEC_ENC_PENDING       6   /* wait for link encryption pending */
     48 typedef UINT8 tGATT_SEC_ACTION;
     49 
     50 
     51 #define GATT_ATTR_OP_SPT_MTU               (0x00000001 << 0)
     52 #define GATT_ATTR_OP_SPT_FIND_INFO         (0x00000001 << 1)
     53 #define GATT_ATTR_OP_SPT_FIND_BY_TYPE      (0x00000001 << 2)
     54 #define GATT_ATTR_OP_SPT_READ_BY_TYPE      (0x00000001 << 3)
     55 #define GATT_ATTR_OP_SPT_READ              (0x00000001 << 4)
     56 #define GATT_ATTR_OP_SPT_MULT_READ         (0x00000001 << 5)
     57 #define GATT_ATTR_OP_SPT_READ_BLOB         (0x00000001 << 6)
     58 #define GATT_ATTR_OP_SPT_READ_BY_GRP_TYPE  (0x00000001 << 7)
     59 #define GATT_ATTR_OP_SPT_WRITE             (0x00000001 << 8)
     60 #define GATT_ATTR_OP_SPT_WRITE_CMD         (0x00000001 << 9)
     61 #define GATT_ATTR_OP_SPT_PREP_WRITE        (0x00000001 << 10)
     62 #define GATT_ATTR_OP_SPT_EXE_WRITE         (0x00000001 << 11)
     63 #define GATT_ATTR_OP_SPT_HDL_VALUE_CONF    (0x00000001 << 12)
     64 #define GATT_ATTR_OP_SP_SIGN_WRITE        (0x00000001 << 13)
     65 
     66 #define GATT_INDEX_INVALID  0xff
     67 
     68 #define GATT_PENDING_REQ_NONE    0
     69 
     70 
     71 #define GATT_WRITE_CMD_MASK  0xc0  /*0x1100-0000*/
     72 #define GATT_AUTH_SIGN_MASK  0x80  /*0x1000-0000*/
     73 #define GATT_AUTH_SIGN_LEN   12
     74 
     75 #define GATT_HDR_SIZE           3 /* 1B opcode + 2B handle */
     76 
     77 /* wait for ATT cmd response timeout value */
     78 #define GATT_WAIT_FOR_RSP_TIMEOUT_MS      (30 * 1000)
     79 #define GATT_WAIT_FOR_DISC_RSP_TIMEOUT_MS (5 * 1000)
     80 #define GATT_REQ_RETRY_LIMIT         2
     81 
     82 /* characteristic descriptor type */
     83 #define GATT_DESCR_EXT_DSCPTOR   1    /* Characteristic Extended Properties */
     84 #define GATT_DESCR_USER_DSCPTOR  2    /* Characteristic User Description    */
     85 #define GATT_DESCR_CLT_CONFIG    3    /* Client Characteristic Configuration */
     86 #define GATT_DESCR_SVR_CONFIG    4    /* Server Characteristic Configuration */
     87 #define GATT_DESCR_PRES_FORMAT   5    /* Characteristic Presentation Format */
     88 #define GATT_DESCR_AGGR_FORMAT   6    /* Characteristic Aggregate Format */
     89 #define GATT_DESCR_VALID_RANGE   7    /* Characteristic Valid Range */
     90 #define GATT_DESCR_UNKNOWN       0xff
     91 
     92 #define GATT_SEC_FLAG_LKEY_UNAUTHED     BTM_SEC_FLAG_LKEY_KNOWN
     93 #define GATT_SEC_FLAG_LKEY_AUTHED       BTM_SEC_FLAG_LKEY_AUTHED
     94 #define GATT_SEC_FLAG_ENCRYPTED         BTM_SEC_FLAG_ENCRYPTED
     95 typedef UINT8 tGATT_SEC_FLAG;
     96 
     97 /* Find Information Response Type
     98 */
     99 #define GATT_INFO_TYPE_PAIR_16      0x01
    100 #define GATT_INFO_TYPE_PAIR_128     0x02
    101 
    102 /*  GATT client FIND_TYPE_VALUE_Request data */
    103 typedef struct
    104 {
    105     tBT_UUID        uuid;           /* type of attribute to be found */
    106     UINT16          s_handle;       /* starting handle */
    107     UINT16          e_handle;       /* ending handle */
    108     UINT16          value_len;      /* length of the attribute value */
    109     UINT8           value[GATT_MAX_MTU_SIZE];       /* pointer to the attribute value to be found */
    110 } tGATT_FIND_TYPE_VALUE;
    111 
    112 /* client request message to ATT protocol
    113 */
    114 typedef union
    115 {
    116     tGATT_READ_BY_TYPE      browse;     /* read by type request */
    117     tGATT_FIND_TYPE_VALUE   find_type_value;/* find by type value */
    118     tGATT_READ_MULTI        read_multi;   /* read multiple request */
    119     tGATT_READ_PARTIAL      read_blob;    /* read blob */
    120     tGATT_VALUE             attr_value;   /* write request */
    121                                           /* prepare write */
    122     /* write blob */
    123     UINT16                  handle;        /* read,  handle value confirmation */
    124     UINT16                  mtu;
    125     tGATT_EXEC_FLAG         exec_write;    /* execute write */
    126 }tGATT_CL_MSG;
    127 
    128 /* error response strucutre */
    129 typedef struct
    130 {
    131     UINT16  handle;
    132     UINT8   cmd_code;
    133     UINT8   reason;
    134 }tGATT_ERROR;
    135 
    136 /* server response message to ATT protocol
    137 */
    138 typedef union
    139 {
    140     /* data type            member          event   */
    141     tGATT_VALUE             attr_value;     /* READ, HANDLE_VALUE_IND, PREPARE_WRITE */
    142                                             /* READ_BLOB, READ_BY_TYPE */
    143     tGATT_ERROR             error;          /* ERROR_RSP */
    144     UINT16                  handle;         /* WRITE, WRITE_BLOB */
    145     UINT16                  mtu;            /* exchange MTU request */
    146 } tGATT_SR_MSG;
    147 
    148 /* Characteristic declaration attribute value
    149 */
    150 typedef struct
    151 {
    152     tGATT_CHAR_PROP             property;
    153     UINT16                      char_val_handle;
    154 } tGATT_CHAR_DECL;
    155 
    156 /* attribute value maintained in the server database
    157 */
    158 typedef union
    159 {
    160     tBT_UUID                uuid;               /* service declaration */
    161     tGATT_CHAR_DECL         char_decl;          /* characteristic declaration */
    162     tGATT_INCL_SRVC         incl_handle;        /* included service */
    163 
    164 } tGATT_ATTR_VALUE;
    165 
    166 /* Attribute UUID type
    167 */
    168 #define GATT_ATTR_UUID_TYPE_16      0
    169 #define GATT_ATTR_UUID_TYPE_128     1
    170 #define GATT_ATTR_UUID_TYPE_32      2
    171 typedef UINT8   tGATT_ATTR_UUID_TYPE;
    172 
    173 /* 16 bits UUID Attribute in server database
    174 */
    175 typedef struct
    176 {
    177     void                                *p_next;  /* pointer to the next attribute,
    178                                                     either tGATT_ATTR16 or tGATT_ATTR128 */
    179     tGATT_ATTR_VALUE                    *p_value;
    180     tGATT_ATTR_UUID_TYPE                uuid_type;
    181     tGATT_PERM                          permission;
    182     UINT16                              handle;
    183     UINT16                              uuid;
    184 } tGATT_ATTR16;
    185 
    186 /* 32 bits UUID Attribute in server database
    187 */
    188 typedef struct
    189 {
    190     void                                *p_next;  /* pointer to the next attribute,
    191                                                     either tGATT_ATTR16, tGATT_ATTR32 or tGATT_ATTR128 */
    192     tGATT_ATTR_VALUE                    *p_value;
    193     tGATT_ATTR_UUID_TYPE                uuid_type;
    194     tGATT_PERM                          permission;
    195     UINT16                              handle;
    196     UINT32                              uuid;
    197 } tGATT_ATTR32;
    198 
    199 
    200 /* 128 bits UUID Attribute in server database
    201 */
    202 typedef struct
    203 {
    204     void                                *p_next;  /* pointer to the next attribute,
    205                                                     either tGATT_ATTR16 or tGATT_ATTR128 */
    206     tGATT_ATTR_VALUE                    *p_value;
    207     tGATT_ATTR_UUID_TYPE                uuid_type;
    208     tGATT_PERM                          permission;
    209     UINT16                              handle;
    210     UINT8                               uuid[LEN_UUID_128];
    211 } tGATT_ATTR128;
    212 
    213 /* Service Database definition
    214 */
    215 typedef struct
    216 {
    217     void            *p_attr_list;               /* pointer to the first attribute,
    218                                                   either tGATT_ATTR16 or tGATT_ATTR128 */
    219     UINT8           *p_free_mem;                /* Pointer to free memory       */
    220     fixed_queue_t   *svc_buffer;                /* buffer queue used for service database */
    221     UINT32          mem_free;                   /* Memory still available       */
    222     UINT16          end_handle;                 /* Last handle number           */
    223     UINT16          next_handle;                /* Next usable handle value     */
    224 } tGATT_SVC_DB;
    225 
    226 /* Data Structure used for GATT server                                        */
    227 /* A GATT registration record consists of a handle, and 1 or more attributes  */
    228 /* A service registration information record consists of beginning and ending */
    229 /* attribute handle, service UUID and a set of GATT server callback.          */
    230 typedef struct
    231 {
    232     tGATT_SVC_DB    *p_db;      /* pointer to the service database */
    233     tBT_UUID        app_uuid;           /* applicatino UUID */
    234     UINT32          sdp_handle; /* primamry service SDP handle */
    235     UINT16          service_instance;   /* service instance number */
    236     UINT16          type;       /* service type UUID, primary or secondary */
    237     UINT16          s_hdl;      /* service starting handle */
    238     UINT16          e_hdl;      /* service ending handle */
    239     tGATT_IF        gatt_if;    /* this service is belong to which application */
    240     BOOLEAN         in_use;
    241 } tGATT_SR_REG;
    242 
    243 #define GATT_LISTEN_TO_ALL  0xff
    244 #define GATT_LISTEN_TO_NONE 0
    245 
    246 /* Data Structure used for GATT server */
    247 /* An GATT registration record consists of a handle, and 1 or more attributes */
    248 /* A service registration information record consists of beginning and ending */
    249 /* attribute handle, service UUID and a set of GATT server callback.          */
    250 
    251 typedef struct
    252 {
    253     tBT_UUID     app_uuid128;
    254     tGATT_CBACK  app_cb;
    255     tGATT_IF     gatt_if; /* one based */
    256     BOOLEAN      in_use;
    257     UINT8        listening; /* if adv for all has been enabled */
    258 } tGATT_REG;
    259 
    260 
    261 
    262 
    263 /* command queue for each connection */
    264 typedef struct
    265 {
    266     BT_HDR      *p_cmd;
    267     UINT16      clcb_idx;
    268     UINT8       op_code;
    269     BOOLEAN     to_send;
    270 }tGATT_CMD_Q;
    271 
    272 
    273 #if GATT_MAX_SR_PROFILES <= 8
    274 typedef UINT8 tGATT_APP_MASK;
    275 #elif GATT_MAX_SR_PROFILES <= 16
    276 typedef UINT16 tGATT_APP_MASK;
    277 #elif GATT_MAX_SR_PROFILES <= 32
    278 typedef UINT32 tGATT_APP_MASK;
    279 #endif
    280 
    281 /* command details for each connection */
    282 typedef struct
    283 {
    284     BT_HDR          *p_rsp_msg;
    285     UINT32           trans_id;
    286     tGATT_READ_MULTI multi_req;
    287     fixed_queue_t   *multi_rsp_q;
    288     UINT16           handle;
    289     UINT8            op_code;
    290     UINT8            status;
    291     UINT8            cback_cnt[GATT_MAX_APPS];
    292 } tGATT_SR_CMD;
    293 
    294 #define     GATT_CH_CLOSE               0
    295 #define     GATT_CH_CLOSING             1
    296 #define     GATT_CH_CONN                2
    297 #define     GATT_CH_CFG                 3
    298 #define     GATT_CH_OPEN                4
    299 
    300 typedef UINT8 tGATT_CH_STATE;
    301 
    302 #define GATT_GATT_START_HANDLE  1
    303 #define GATT_GAP_START_HANDLE   20
    304 #define GATT_APP_START_HANDLE   40
    305 
    306 typedef struct hdl_cfg
    307 {
    308     UINT16               gatt_start_hdl;
    309     UINT16               gap_start_hdl;
    310     UINT16               app_start_hdl;
    311 }tGATT_HDL_CFG;
    312 
    313 typedef struct hdl_list_elem
    314 {
    315     struct              hdl_list_elem *p_next;
    316     struct              hdl_list_elem *p_prev;
    317     tGATTS_HNDL_RANGE   asgn_range; /* assigned handle range */
    318     tGATT_SVC_DB        svc_db;
    319     BOOLEAN             in_use;
    320 }tGATT_HDL_LIST_ELEM;
    321 
    322 typedef struct
    323 {
    324     tGATT_HDL_LIST_ELEM  *p_first;
    325     tGATT_HDL_LIST_ELEM  *p_last;
    326     UINT16               count;
    327 }tGATT_HDL_LIST_INFO;
    328 
    329 
    330 typedef struct srv_list_elem
    331 {
    332     struct              srv_list_elem *p_next;
    333     struct              srv_list_elem *p_prev;
    334     UINT16              s_hdl;
    335     UINT8               i_sreg;
    336     BOOLEAN             in_use;
    337     BOOLEAN             is_primary;
    338 }tGATT_SRV_LIST_ELEM;
    339 
    340 
    341 typedef struct
    342 {
    343     tGATT_SRV_LIST_ELEM  *p_last_primary;
    344     tGATT_SRV_LIST_ELEM  *p_first;
    345     tGATT_SRV_LIST_ELEM  *p_last;
    346     UINT16               count;
    347 }tGATT_SRV_LIST_INFO;
    348 
    349 typedef struct
    350 {
    351     fixed_queue_t   *pending_enc_clcb;   /* pending encryption channel q */
    352     tGATT_SEC_ACTION sec_act;
    353     BD_ADDR         peer_bda;
    354     tBT_TRANSPORT   transport;
    355     UINT32          trans_id;
    356 
    357     UINT16          att_lcid;           /* L2CAP channel ID for ATT */
    358     UINT16          payload_size;
    359 
    360     tGATT_CH_STATE  ch_state;
    361     UINT8           ch_flags;
    362 
    363     tGATT_IF        app_hold_link[GATT_MAX_APPS];
    364 
    365     /* server needs */
    366     /* server response data */
    367     tGATT_SR_CMD    sr_cmd;
    368     UINT16          indicate_handle;
    369     fixed_queue_t   *pending_ind_q;
    370 
    371     alarm_t         *conf_timer;         /* peer confirm to indication timer */
    372 
    373     UINT8           prep_cnt[GATT_MAX_APPS];
    374     UINT8           ind_count;
    375 
    376     tGATT_CMD_Q     cl_cmd_q[GATT_CL_MAX_LCB];
    377     alarm_t         *ind_ack_timer;   /* local app confirm to indication timer */
    378     UINT8           pending_cl_req;
    379     UINT8           next_slot_inq;    /* index of next available slot in queue */
    380 
    381     BOOLEAN         in_use;
    382     UINT8           tcb_idx;
    383 } tGATT_TCB;
    384 
    385 
    386 /* logic channel */
    387 typedef struct
    388 {
    389     UINT16                  next_disc_start_hdl;   /* starting handle for the next inc srvv discovery */
    390     tGATT_DISC_RES          result;
    391     BOOLEAN                 wait_for_read_rsp;
    392 } tGATT_READ_INC_UUID128;
    393 typedef struct
    394 {
    395     tGATT_TCB               *p_tcb;         /* associated TCB of this CLCB */
    396     tGATT_REG               *p_reg;        /* owner of this CLCB */
    397     UINT8                   sccb_idx;
    398     UINT8                   *p_attr_buf;    /* attribute buffer for read multiple, prepare write */
    399     tBT_UUID                uuid;
    400     UINT16                  conn_id;        /* connection handle */
    401     UINT16                  clcb_idx;
    402     UINT16                  s_handle;       /* starting handle of the active request */
    403     UINT16                  e_handle;       /* ending handle of the active request */
    404     UINT16                  counter;        /* used as offset, attribute length, num of prepare write */
    405     UINT16                  start_offset;
    406     tGATT_AUTH_REQ          auth_req;       /* authentication requirement */
    407     UINT8                   operation;      /* one logic channel can have one operation active */
    408     UINT8                   op_subtype;     /* operation subtype */
    409     UINT8                   status;         /* operation status */
    410     BOOLEAN                 first_read_blob_after_read;
    411     tGATT_READ_INC_UUID128  read_uuid128;
    412     BOOLEAN                 in_use;
    413     alarm_t                 *gatt_rsp_timer_ent;  /* peer response timer */
    414     UINT8                   retry_count;
    415 
    416 } tGATT_CLCB;
    417 
    418 typedef struct
    419 {
    420     tGATT_CLCB  *p_clcb;
    421 }tGATT_PENDING_ENC_CLCB;
    422 
    423 typedef struct
    424 {
    425     UINT16                  clcb_idx;
    426     BOOLEAN                 in_use;
    427 } tGATT_SCCB;
    428 
    429 typedef struct
    430 {
    431     UINT16      handle;
    432     UINT16      uuid;
    433     UINT32      service_change;
    434 }tGATT_SVC_CHG;
    435 
    436 typedef struct
    437 {
    438     tGATT_IF        gatt_if[GATT_MAX_APPS];
    439     tGATT_IF        listen_gif[GATT_MAX_APPS];
    440     BD_ADDR         remote_bda;
    441     BOOLEAN         in_use;
    442 }tGATT_BG_CONN_DEV;
    443 
    444 #define GATT_SVC_CHANGED_CONNECTING        1   /* wait for connection */
    445 #define GATT_SVC_CHANGED_SERVICE           2   /* GATT service discovery */
    446 #define GATT_SVC_CHANGED_CHARACTERISTIC    3   /* service change char discovery */
    447 #define GATT_SVC_CHANGED_DESCRIPTOR        4   /* service change CCC discoery */
    448 #define GATT_SVC_CHANGED_CONFIGURE_CCCD    5   /* config CCC */
    449 
    450 typedef struct
    451 {
    452     UINT16  conn_id;
    453     BOOLEAN in_use;
    454     BOOLEAN connected;
    455     BD_ADDR bda;
    456     tBT_TRANSPORT   transport;
    457 
    458     /* GATT service change CCC related variables */
    459     UINT8       ccc_stage;
    460     UINT8       ccc_result;
    461     UINT16      s_handle;
    462     UINT16      e_handle;
    463 }tGATT_PROFILE_CLCB;
    464 
    465 typedef struct
    466 {
    467     tGATT_TCB           tcb[GATT_MAX_PHY_CHANNEL];
    468     fixed_queue_t       *sign_op_queue;
    469 
    470     tGATT_SR_REG        sr_reg[GATT_MAX_SR_PROFILES];
    471     UINT16              next_handle;    /* next available handle */
    472     tGATT_SVC_CHG       gattp_attr;     /* GATT profile attribute service change */
    473     tGATT_IF            gatt_if;
    474     tGATT_HDL_LIST_INFO hdl_list_info;
    475     tGATT_HDL_LIST_ELEM hdl_list[GATT_MAX_SR_PROFILES];
    476     tGATT_SRV_LIST_INFO srv_list_info;
    477     tGATT_SRV_LIST_ELEM srv_list[GATT_MAX_SR_PROFILES];
    478 
    479     fixed_queue_t       *srv_chg_clt_q; /* service change clients queue */
    480     fixed_queue_t       *pending_new_srv_start_q; /* pending new service start queue */
    481     tGATT_REG           cl_rcb[GATT_MAX_APPS];
    482     tGATT_CLCB          clcb[GATT_CL_MAX_LCB];  /* connection link control block*/
    483     tGATT_SCCB          sccb[GATT_MAX_SCCB];    /* sign complete callback function GATT_MAX_SCCB <= GATT_CL_MAX_LCB */
    484     UINT8               trace_level;
    485     UINT16              def_mtu_size;
    486 
    487 #if GATT_CONFORMANCE_TESTING == TRUE
    488     BOOLEAN             enable_err_rsp;
    489     UINT8               req_op_code;
    490     UINT8               err_status;
    491     UINT16              handle;
    492 #endif
    493 
    494     tGATT_PROFILE_CLCB  profile_clcb[GATT_MAX_APPS];
    495     UINT16              handle_of_h_r;          /* Handle of the handles reused characteristic value */
    496 
    497     tGATT_APPL_INFO       cb_info;
    498 
    499 
    500 
    501     tGATT_HDL_CFG           hdl_cfg;
    502     tGATT_BG_CONN_DEV       bgconn_dev[GATT_MAX_BG_CONN_DEV];
    503 
    504 } tGATT_CB;
    505 
    506 
    507 #define GATT_SIZE_OF_SRV_CHG_HNDL_RANGE 4
    508 
    509 #ifdef __cplusplus
    510 extern "C" {
    511 #endif
    512 
    513 /* Global GATT data */
    514 #if GATT_DYNAMIC_MEMORY == FALSE
    515 extern tGATT_CB  gatt_cb;
    516 #else
    517 extern tGATT_CB *gatt_cb_ptr;
    518 #define gatt_cb (*gatt_cb_ptr)
    519 #endif
    520 
    521 #if GATT_CONFORMANCE_TESTING == TRUE
    522 extern void gatt_set_err_rsp(BOOLEAN enable, UINT8 req_op_code, UINT8 err_status);
    523 #endif
    524 
    525 #ifdef __cplusplus
    526 }
    527 #endif
    528 
    529 /* internal functions */
    530 extern void gatt_init (void);
    531 extern void gatt_free(void);
    532 
    533 /* from gatt_main.c */
    534 extern BOOLEAN gatt_disconnect (tGATT_TCB *p_tcb);
    535 extern BOOLEAN gatt_act_connect (tGATT_REG *p_reg, BD_ADDR bd_addr, tBT_TRANSPORT transport);
    536 extern BOOLEAN gatt_connect (BD_ADDR rem_bda,  tGATT_TCB *p_tcb, tBT_TRANSPORT transport);
    537 extern void gatt_data_process (tGATT_TCB *p_tcb, BT_HDR *p_buf);
    538 extern void gatt_update_app_use_link_flag ( tGATT_IF gatt_if, tGATT_TCB *p_tcb, BOOLEAN is_add, BOOLEAN check_acl_link);
    539 
    540 extern void gatt_profile_db_init(void);
    541 extern void gatt_set_ch_state(tGATT_TCB *p_tcb, tGATT_CH_STATE ch_state);
    542 extern tGATT_CH_STATE gatt_get_ch_state(tGATT_TCB *p_tcb);
    543 extern void gatt_init_srv_chg(void);
    544 extern void gatt_proc_srv_chg (void);
    545 extern void gatt_send_srv_chg_ind (BD_ADDR peer_bda);
    546 extern void gatt_chk_srv_chg(tGATTS_SRV_CHG *p_srv_chg_clt);
    547 extern void gatt_add_a_bonded_dev_for_srv_chg (BD_ADDR bda);
    548 
    549 /* from gatt_attr.c */
    550 extern UINT16 gatt_profile_find_conn_id_by_bd_addr(BD_ADDR bda);
    551 
    552 
    553 /* Functions provided by att_protocol.c */
    554 extern tGATT_STATUS attp_send_cl_msg (tGATT_TCB *p_tcb, UINT16 clcb_idx, UINT8 op_code, tGATT_CL_MSG *p_msg);
    555 extern BT_HDR *attp_build_sr_msg(tGATT_TCB *p_tcb, UINT8 op_code, tGATT_SR_MSG *p_msg);
    556 extern tGATT_STATUS attp_send_sr_msg (tGATT_TCB *p_tcb, BT_HDR *p_msg);
    557 extern tGATT_STATUS attp_send_msg_to_l2cap(tGATT_TCB *p_tcb, BT_HDR *p_toL2CAP);
    558 
    559 /* utility functions */
    560 extern UINT8 * gatt_dbg_op_name(UINT8 op_code);
    561 extern UINT32 gatt_add_sdp_record (tBT_UUID *p_uuid, UINT16 start_hdl, UINT16 end_hdl);
    562 extern BOOLEAN gatt_parse_uuid_from_cmd(tBT_UUID *p_uuid, UINT16 len, UINT8 **p_data);
    563 extern UINT8 gatt_build_uuid_to_stream(UINT8 **p_dst, tBT_UUID uuid);
    564 extern BOOLEAN gatt_uuid_compare(tBT_UUID src, tBT_UUID tar);
    565 extern void gatt_convert_uuid32_to_uuid128(UINT8 uuid_128[LEN_UUID_128], UINT32 uuid_32);
    566 extern void gatt_sr_get_sec_info(BD_ADDR rem_bda, tBT_TRANSPORT transport, UINT8 *p_sec_flag, UINT8 *p_key_size);
    567 extern void gatt_start_rsp_timer(UINT16 clcb_idx);
    568 extern void gatt_start_conf_timer(tGATT_TCB    *p_tcb);
    569 extern void gatt_rsp_timeout(void *data);
    570 extern void gatt_indication_confirmation_timeout(void *data);
    571 extern void gatt_ind_ack_timeout(void *data);
    572 extern void gatt_start_ind_ack_timer(tGATT_TCB *p_tcb);
    573 extern tGATT_STATUS gatt_send_error_rsp(tGATT_TCB *p_tcb, UINT8 err_code, UINT8 op_code, UINT16 handle, BOOLEAN deq);
    574 extern void gatt_dbg_display_uuid(tBT_UUID bt_uuid);
    575 extern tGATT_PENDING_ENC_CLCB* gatt_add_pending_enc_channel_clcb(tGATT_TCB *p_tcb, tGATT_CLCB *p_clcb );
    576 
    577 extern tGATTS_PENDING_NEW_SRV_START *gatt_sr_is_new_srv_chg(tBT_UUID *p_app_uuid128, tBT_UUID *p_svc_uuid, UINT16 svc_inst);
    578 
    579 extern BOOLEAN gatt_is_srv_chg_ind_pending (tGATT_TCB *p_tcb);
    580 extern tGATTS_SRV_CHG *gatt_is_bda_in_the_srv_chg_clt_list (BD_ADDR bda);
    581 
    582 extern BOOLEAN gatt_find_the_connected_bda(UINT8 start_idx, BD_ADDR bda, UINT8 *p_found_idx, tBT_TRANSPORT *p_transport);
    583 extern void gatt_set_srv_chg(void);
    584 extern void gatt_delete_dev_from_srv_chg_clt_list(BD_ADDR bd_addr);
    585 extern tGATT_VALUE *gatt_add_pending_ind(tGATT_TCB  *p_tcb, tGATT_VALUE *p_ind);
    586 extern tGATTS_PENDING_NEW_SRV_START *gatt_add_pending_new_srv_start( tGATTS_HNDL_RANGE *p_new_srv_start);
    587 extern void gatt_free_srvc_db_buffer_app_id(tBT_UUID *p_app_id);
    588 extern BOOLEAN gatt_update_listen_mode(void);
    589 extern BOOLEAN gatt_cl_send_next_cmd_inq(tGATT_TCB *p_tcb);
    590 
    591 /* reserved handle list */
    592 extern tGATT_HDL_LIST_ELEM *gatt_find_hdl_buffer_by_app_id (tBT_UUID *p_app_uuid128, tBT_UUID *p_svc_uuid, UINT16 svc_inst);
    593 extern tGATT_HDL_LIST_ELEM *gatt_find_hdl_buffer_by_handle(UINT16 handle);
    594 extern tGATT_HDL_LIST_ELEM *gatt_alloc_hdl_buffer(void);
    595 extern void gatt_free_hdl_buffer(tGATT_HDL_LIST_ELEM *p);
    596 extern BOOLEAN gatt_is_last_attribute(tGATT_SRV_LIST_INFO *p_list, tGATT_SRV_LIST_ELEM *p_start, tBT_UUID value);
    597 extern void gatt_update_last_pri_srv_info(tGATT_SRV_LIST_INFO *p_list);
    598 extern BOOLEAN gatt_add_a_srv_to_list(tGATT_SRV_LIST_INFO *p_list, tGATT_SRV_LIST_ELEM *p_new);
    599 extern BOOLEAN gatt_remove_a_srv_from_list(tGATT_SRV_LIST_INFO *p_list, tGATT_SRV_LIST_ELEM *p_remove);
    600 extern BOOLEAN gatt_add_an_item_to_list(tGATT_HDL_LIST_INFO *p_list, tGATT_HDL_LIST_ELEM *p_new);
    601 extern BOOLEAN gatt_remove_an_item_from_list(tGATT_HDL_LIST_INFO *p_list, tGATT_HDL_LIST_ELEM *p_remove);
    602 extern tGATTS_SRV_CHG *gatt_add_srv_chg_clt(tGATTS_SRV_CHG *p_srv_chg);
    603 
    604 /* for background connection */
    605 extern BOOLEAN gatt_update_auto_connect_dev (tGATT_IF gatt_if, BOOLEAN add, BD_ADDR bd_addr, BOOLEAN is_initiator);
    606 extern BOOLEAN gatt_is_bg_dev_for_app(tGATT_BG_CONN_DEV *p_dev, tGATT_IF gatt_if);
    607 extern BOOLEAN gatt_remove_bg_dev_for_app(tGATT_IF gatt_if, BD_ADDR bd_addr);
    608 extern UINT8 gatt_get_num_apps_for_bg_dev(BD_ADDR bd_addr);
    609 extern BOOLEAN gatt_find_app_for_bg_dev(BD_ADDR bd_addr, tGATT_IF *p_gatt_if);
    610 extern tGATT_BG_CONN_DEV * gatt_find_bg_dev(BD_ADDR remote_bda);
    611 extern void gatt_deregister_bgdev_list(tGATT_IF gatt_if);
    612 extern void gatt_reset_bgdev_list(void);
    613 
    614 /* server function */
    615 extern UINT8 gatt_sr_find_i_rcb_by_handle(UINT16 handle);
    616 extern UINT8 gatt_sr_find_i_rcb_by_app_id(tBT_UUID *p_app_uuid128, tBT_UUID *p_svc_uuid, UINT16 svc_inst);
    617 extern UINT8 gatt_sr_alloc_rcb(tGATT_HDL_LIST_ELEM *p_list);
    618 extern tGATT_STATUS gatt_sr_process_app_rsp (tGATT_TCB *p_tcb, tGATT_IF gatt_if, UINT32 trans_id, UINT8 op_code, tGATT_STATUS status, tGATTS_RSP *p_msg);
    619 extern void gatt_server_handle_client_req (tGATT_TCB *p_tcb, UINT8 op_code,
    620                                            UINT16 len, UINT8 *p_data);
    621 extern void gatt_sr_send_req_callback(UINT16 conn_id,  UINT32 trans_id,
    622                                       UINT8 op_code, tGATTS_DATA *p_req_data);
    623 extern UINT32 gatt_sr_enqueue_cmd (tGATT_TCB *p_tcb, UINT8 op_code, UINT16 handle);
    624 extern BOOLEAN gatt_cancel_open(tGATT_IF gatt_if, BD_ADDR bda);
    625 
    626 /*   */
    627 
    628 extern tGATT_REG *gatt_get_regcb (tGATT_IF gatt_if);
    629 extern BOOLEAN gatt_is_clcb_allocated (UINT16 conn_id);
    630 extern tGATT_CLCB *gatt_clcb_alloc (UINT16 conn_id);
    631 extern void gatt_clcb_dealloc (tGATT_CLCB *p_clcb);
    632 
    633 extern void gatt_sr_copy_prep_cnt_to_cback_cnt(tGATT_TCB *p_tcb );
    634 extern BOOLEAN gatt_sr_is_cback_cnt_zero(tGATT_TCB *p_tcb );
    635 extern BOOLEAN gatt_sr_is_prep_cnt_zero(tGATT_TCB *p_tcb );
    636 extern void gatt_sr_reset_cback_cnt(tGATT_TCB *p_tcb );
    637 extern void gatt_sr_reset_prep_cnt(tGATT_TCB *p_tcb );
    638 extern void gatt_sr_update_cback_cnt(tGATT_TCB *p_tcb, tGATT_IF gatt_if, BOOLEAN is_inc, BOOLEAN is_reset_first);
    639 extern void gatt_sr_update_prep_cnt(tGATT_TCB *p_tcb, tGATT_IF gatt_if, BOOLEAN is_inc, BOOLEAN is_reset_first);
    640 
    641 extern BOOLEAN gatt_find_app_hold_link(tGATT_TCB *p_tcb, UINT8 start_idx, UINT8 *p_found_idx, tGATT_IF *p_gatt_if);
    642 extern UINT8 gatt_num_apps_hold_link(tGATT_TCB *p_tcb);
    643 extern UINT8 gatt_num_clcb_by_bd_addr(BD_ADDR bda);
    644 extern tGATT_TCB * gatt_find_tcb_by_cid(UINT16 lcid);
    645 extern tGATT_TCB * gatt_allocate_tcb_by_bdaddr(BD_ADDR bda, tBT_TRANSPORT transport);
    646 extern tGATT_TCB * gatt_get_tcb_by_idx(UINT8 tcb_idx);
    647 extern tGATT_TCB * gatt_find_tcb_by_addr(BD_ADDR bda, tBT_TRANSPORT transport);
    648 extern BOOLEAN gatt_send_ble_burst_data (BD_ADDR remote_bda,  BT_HDR *p_buf);
    649 
    650 /* GATT client functions */
    651 extern void gatt_dequeue_sr_cmd (tGATT_TCB *p_tcb);
    652 extern UINT8 gatt_send_write_msg(tGATT_TCB *p_tcb, UINT16 clcb_idx, UINT8 op_code, UINT16 handle,
    653                                  UINT16 len, UINT16 offset, UINT8 *p_data);
    654 extern void gatt_cleanup_upon_disc(BD_ADDR bda, UINT16 reason, tBT_TRANSPORT transport);
    655 extern void gatt_end_operation(tGATT_CLCB *p_clcb, tGATT_STATUS status, void *p_data);
    656 
    657 extern void gatt_act_discovery(tGATT_CLCB *p_clcb);
    658 extern void gatt_act_read(tGATT_CLCB *p_clcb, UINT16 offset);
    659 extern void gatt_act_write(tGATT_CLCB *p_clcb, UINT8 sec_act);
    660 extern UINT8 gatt_act_send_browse(tGATT_TCB *p_tcb, UINT16 index, UINT8 op, UINT16 s_handle, UINT16 e_handle,
    661                                   tBT_UUID uuid);
    662 extern tGATT_CLCB *gatt_cmd_dequeue(tGATT_TCB *p_tcb, UINT8 *p_opcode);
    663 extern BOOLEAN gatt_cmd_enq(tGATT_TCB *p_tcb, UINT16 clcb_idx, BOOLEAN to_send, UINT8 op_code, BT_HDR *p_buf);
    664 extern void gatt_client_handle_server_rsp (tGATT_TCB *p_tcb, UINT8 op_code,
    665                                            UINT16 len, UINT8 *p_data);
    666 extern void gatt_send_queue_write_cancel (tGATT_TCB *p_tcb, tGATT_CLCB *p_clcb, tGATT_EXEC_FLAG flag);
    667 
    668 /* gatt_auth.c */
    669 extern BOOLEAN gatt_security_check_start(tGATT_CLCB *p_clcb);
    670 extern void gatt_verify_signature(tGATT_TCB *p_tcb, BT_HDR *p_buf);
    671 extern tGATT_SEC_ACTION gatt_determine_sec_act(tGATT_CLCB *p_clcb );
    672 extern tGATT_STATUS gatt_get_link_encrypt_status(tGATT_TCB *p_tcb);
    673 extern tGATT_SEC_ACTION gatt_get_sec_act(tGATT_TCB *p_tcb);
    674 extern void gatt_set_sec_act(tGATT_TCB *p_tcb, tGATT_SEC_ACTION sec_act);
    675 
    676 /* gatt_db.c */
    677 extern BOOLEAN gatts_init_service_db (tGATT_SVC_DB *p_db, tBT_UUID *p_service, BOOLEAN is_pri, UINT16 s_hdl, UINT16 num_handle);
    678 extern UINT16 gatts_add_included_service (tGATT_SVC_DB *p_db, UINT16 s_handle, UINT16 e_handle, tBT_UUID service);
    679 extern UINT16 gatts_add_characteristic (tGATT_SVC_DB *p_db, tGATT_PERM perm, tGATT_CHAR_PROP property, tBT_UUID *p_char_uuid);
    680 extern UINT16 gatts_add_char_descr (tGATT_SVC_DB *p_db, tGATT_PERM perm, tBT_UUID *p_dscp_uuid);
    681 extern tGATT_STATUS gatts_db_read_attr_value_by_type (tGATT_TCB *p_tcb, tGATT_SVC_DB *p_db, UINT8 op_code, BT_HDR *p_rsp, UINT16 s_handle,
    682                                                       UINT16 e_handle, tBT_UUID type, UINT16 *p_len, tGATT_SEC_FLAG sec_flag, UINT8 key_size,UINT32 trans_id, UINT16 *p_cur_handle);
    683 extern tGATT_STATUS gatts_read_attr_value_by_handle(tGATT_TCB *p_tcb,tGATT_SVC_DB *p_db, UINT8 op_code, UINT16 handle, UINT16 offset,
    684                                                     UINT8 *p_value, UINT16 *p_len, UINT16 mtu,tGATT_SEC_FLAG sec_flag,UINT8 key_size,UINT32 trans_id);
    685 extern tGATT_STATUS gatts_write_attr_perm_check (tGATT_SVC_DB *p_db, UINT8 op_code,UINT16 handle, UINT16 offset, UINT8 *p_data,
    686                                                  UINT16 len, tGATT_SEC_FLAG sec_flag, UINT8 key_size);
    687 extern tGATT_STATUS gatts_read_attr_perm_check(tGATT_SVC_DB *p_db, BOOLEAN is_long, UINT16 handle, tGATT_SEC_FLAG sec_flag,UINT8 key_size);
    688 extern void gatts_update_srv_list_elem(UINT8 i_sreg, UINT16 handle, BOOLEAN is_primary);
    689 extern tBT_UUID * gatts_get_service_uuid (tGATT_SVC_DB *p_db);
    690 
    691 extern void gatt_reset_bgdev_list(void);
    692 #endif
    693