/******************************************************************************
*
* Copyright (C) 2003-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This file contains the GATT Server action functions for the state
* machine.
*
******************************************************************************/
#include "bt_target.h"
#include <string.h>
#include "bt_common.h"
#include "bta_gatts_co.h"
#include "bta_gatts_int.h"
#include "bta_sys.h"
#include "btif/include/btif_debug_conn.h"
#include "btm_ble_api.h"
#include "osi/include/osi.h"
#include "utl.h"
static void bta_gatts_nv_save_cback(bool is_saved,
tGATTS_HNDL_RANGE* p_hndl_range);
static bool bta_gatts_nv_srv_chg_cback(tGATTS_SRV_CHG_CMD cmd,
tGATTS_SRV_CHG_REQ* p_req,
tGATTS_SRV_CHG_RSP* p_rsp);
static void bta_gatts_conn_cback(tGATT_IF gatt_if, BD_ADDR bda,
uint16_t conn_id, bool connected,
tGATT_DISCONN_REASON reason,
tGATT_TRANSPORT transport);
static void bta_gatts_send_request_cback(uint16_t conn_id, uint32_t trans_id,
tGATTS_REQ_TYPE req_type,
tGATTS_DATA* p_data);
static void bta_gatts_cong_cback(uint16_t conn_id, bool congested);
static void bta_gatts_phy_update_cback(tGATT_IF gatt_if, uint16_t conn_id,
uint8_t tx_phy, uint8_t rx_phy,
uint8_t status);
static void bta_gatts_conn_update_cback(tGATT_IF gatt_if, uint16_t conn_id,
uint16_t interval, uint16_t latency,
uint16_t timeout, uint8_t status);
static tGATT_CBACK bta_gatts_cback = {bta_gatts_conn_cback,
NULL,
NULL,
NULL,
bta_gatts_send_request_cback,
NULL,
bta_gatts_cong_cback,
bta_gatts_phy_update_cback,
bta_gatts_conn_update_cback};
tGATT_APPL_INFO bta_gatts_nv_cback = {bta_gatts_nv_save_cback,
bta_gatts_nv_srv_chg_cback};
/*******************************************************************************
*
* Function bta_gatts_nv_save_cback
*
* Description NV save callback function.
*
* Parameter is_add: true is to add a handle range; otherwise is to
* delete.
* Returns none.
*
******************************************************************************/
static void bta_gatts_nv_save_cback(bool is_add,
tGATTS_HNDL_RANGE* p_hndl_range) {
bta_gatts_co_update_handle_range(is_add,
(tBTA_GATTS_HNDL_RANGE*)p_hndl_range);
}
/*******************************************************************************
*
* Function bta_gatts_nv_srv_chg_cback
*
* Description NV save callback function.
*
* Parameter is_add: true is to add a handle range; otherwise is to
* delete.
* Returns none.
*
******************************************************************************/
static bool bta_gatts_nv_srv_chg_cback(tGATTS_SRV_CHG_CMD cmd,
tGATTS_SRV_CHG_REQ* p_req,
tGATTS_SRV_CHG_RSP* p_rsp) {
return bta_gatts_co_srv_chg((tBTA_GATTS_SRV_CHG_CMD)cmd,
(tBTA_GATTS_SRV_CHG_REQ*)p_req,
(tBTA_GATTS_SRV_CHG_RSP*)p_rsp);
}
/*******************************************************************************
*
* Function bta_gatts_enable
*
* Description enable BTA GATTS module.
*
* Returns none.
*
******************************************************************************/
void bta_gatts_enable(tBTA_GATTS_CB* p_cb) {
uint8_t index = 0;
tBTA_GATTS_HNDL_RANGE handle_range;
if (p_cb->enabled) {
APPL_TRACE_DEBUG("GATTS already enabled.");
} else {
memset(p_cb, 0, sizeof(tBTA_GATTS_CB));
p_cb->enabled = true;
while (bta_gatts_co_load_handle_range(index, &handle_range)) {
GATTS_AddHandleRange((tGATTS_HNDL_RANGE*)&handle_range);
memset(&handle_range, 0, sizeof(tGATTS_HNDL_RANGE));
index++;
}
APPL_TRACE_DEBUG("bta_gatts_enable: num of handle range added=%d", index);
if (!GATTS_NVRegister(&bta_gatts_nv_cback)) {
APPL_TRACE_ERROR("BTA GATTS NV register failed.");
}
}
}
/*******************************************************************************
*
* Function bta_gatts_api_disable
*
* Description disable BTA GATTS module.
*
* Returns none.
*
******************************************************************************/
void bta_gatts_api_disable(tBTA_GATTS_CB* p_cb) {
uint8_t i;
if (p_cb->enabled) {
for (i = 0; i < BTA_GATTS_MAX_APP_NUM; i++) {
if (p_cb->rcb[i].in_use) {
GATT_Deregister(p_cb->rcb[i].gatt_if);
}
}
memset(p_cb, 0, sizeof(tBTA_GATTS_CB));
} else {
APPL_TRACE_ERROR("GATTS not enabled");
}
}
/*******************************************************************************
*
* Function bta_gatts_register
*
* Description register an application.
*
* Returns none.
*
******************************************************************************/
void bta_gatts_register(tBTA_GATTS_CB* p_cb, tBTA_GATTS_DATA* p_msg) {
tBTA_GATTS cb_data;
tBTA_GATT_STATUS status = BTA_GATT_OK;
uint8_t i, first_unuse = 0xff;
if (p_cb->enabled == false) {
bta_gatts_enable(p_cb);
}
for (i = 0; i < BTA_GATTS_MAX_APP_NUM; i++) {
if (p_cb->rcb[i].in_use) {
if (bta_gatts_uuid_compare(p_cb->rcb[i].app_uuid,
p_msg->api_reg.app_uuid)) {
APPL_TRACE_ERROR("application already registered.");
status = BTA_GATT_DUP_REG;
break;
}
}
}
if (status == BTA_GATT_OK) {
for (i = 0; i < BTA_GATTS_MAX_APP_NUM; i++) {
if (first_unuse == 0xff && !p_cb->rcb[i].in_use) {
first_unuse = i;
break;
}
}
cb_data.reg_oper.server_if = BTA_GATTS_INVALID_IF;
memcpy(&cb_data.reg_oper.uuid, &p_msg->api_reg.app_uuid, sizeof(tBT_UUID));
if (first_unuse != 0xff) {
APPL_TRACE_ERROR("register application first_unuse rcb_idx = %d",
first_unuse);
p_cb->rcb[first_unuse].in_use = true;
p_cb->rcb[first_unuse].p_cback = p_msg->api_reg.p_cback;
memcpy(&p_cb->rcb[first_unuse].app_uuid, &p_msg->api_reg.app_uuid,
sizeof(tBT_UUID));
cb_data.reg_oper.server_if = p_cb->rcb[first_unuse].gatt_if =
GATT_Register(&p_msg->api_reg.app_uuid, &bta_gatts_cback);
if (!p_cb->rcb[first_unuse].gatt_if) {
status = BTA_GATT_NO_RESOURCES;
} else {
tBTA_GATTS_INT_START_IF* p_buf = (tBTA_GATTS_INT_START_IF*)osi_malloc(
sizeof(tBTA_GATTS_INT_START_IF));
p_buf->hdr.event = BTA_GATTS_INT_START_IF_EVT;
p_buf->server_if = p_cb->rcb[first_unuse].gatt_if;
bta_sys_sendmsg(p_buf);
}
} else {
status = BTA_GATT_NO_RESOURCES;
}
}
cb_data.reg_oper.status = status;
if (p_msg->api_reg.p_cback)
(*p_msg->api_reg.p_cback)(BTA_GATTS_REG_EVT, &cb_data);
}
/*******************************************************************************
*
* Function bta_gatts_start_if
*
* Description start an application interface.
*
* Returns none.
*
******************************************************************************/
void bta_gatts_start_if(UNUSED_ATTR tBTA_GATTS_CB* p_cb,
tBTA_GATTS_DATA* p_msg) {
if (bta_gatts_find_app_rcb_by_app_if(p_msg->int_start_if.server_if)) {
GATT_StartIf(p_msg->int_start_if.server_if);
} else {
APPL_TRACE_ERROR("Unable to start app.: Unknown interface =%d",
p_msg->int_start_if.server_if);
}
}
/*******************************************************************************
*
* Function bta_gatts_deregister
*
* Description deregister an application.
*
* Returns none.
*
******************************************************************************/
void bta_gatts_deregister(tBTA_GATTS_CB* p_cb, tBTA_GATTS_DATA* p_msg) {
tBTA_GATT_STATUS status = BTA_GATT_ERROR;
tBTA_GATTS_CBACK* p_cback = NULL;
uint8_t i;
tBTA_GATTS cb_data;
cb_data.reg_oper.server_if = p_msg->api_dereg.server_if;
cb_data.reg_oper.status = status;
for (i = 0; i < BTA_GATTS_MAX_APP_NUM; i++) {
if (p_cb->rcb[i].in_use &&
p_cb->rcb[i].gatt_if == p_msg->api_dereg.server_if) {
p_cback = p_cb->rcb[i].p_cback;
status = BTA_GATT_OK;
/* deregister the app */
GATT_Deregister(p_cb->rcb[i].gatt_if);
/* reset cb */
memset(&p_cb->rcb[i], 0, sizeof(tBTA_GATTS_RCB));
cb_data.reg_oper.status = status;
break;
}
}
if (p_cback) {
(*p_cback)(BTA_GATTS_DEREG_EVT, &cb_data);
} else {
APPL_TRACE_ERROR("application not registered.");
}
}
/*******************************************************************************
*
* Function bta_gatts_delete_service
*
* Description action function to delete a service.
*
* Returns none.
*
******************************************************************************/
void bta_gatts_delete_service(tBTA_GATTS_SRVC_CB* p_srvc_cb,
tBTA_GATTS_DATA* p_msg) {
tBTA_GATTS_RCB* p_rcb = &bta_gatts_cb.rcb[p_srvc_cb->rcb_idx];
tBTA_GATTS cb_data;
cb_data.srvc_oper.server_if = p_rcb->gatt_if;
// cb_data.srvc_oper.service_id = p_msg->api_add_incl_srvc.hdr.layer_specific;
if (GATTS_DeleteService(p_rcb->gatt_if, &p_srvc_cb->service_uuid,
p_srvc_cb->service_id)) {
cb_data.srvc_oper.status = BTA_GATT_OK;
memset(p_srvc_cb, 0, sizeof(tBTA_GATTS_SRVC_CB));
} else {
cb_data.srvc_oper.status = BTA_GATT_ERROR;
}
if (p_rcb->p_cback) (*p_rcb->p_cback)(BTA_GATTS_DELELTE_EVT, &cb_data);
}
/*******************************************************************************
*
* Function bta_gatts_stop_service
*
* Description action function to stop a service.
*
* Returns none.
*
******************************************************************************/
void bta_gatts_stop_service(tBTA_GATTS_SRVC_CB* p_srvc_cb,
UNUSED_ATTR tBTA_GATTS_DATA* p_msg) {
tBTA_GATTS_RCB* p_rcb = &bta_gatts_cb.rcb[p_srvc_cb->rcb_idx];
tBTA_GATTS cb_data;
GATTS_StopService(p_srvc_cb->service_id);
cb_data.srvc_oper.server_if = p_rcb->gatt_if;
cb_data.srvc_oper.service_id = p_srvc_cb->service_id;
cb_data.srvc_oper.status = BTA_GATT_OK;
APPL_TRACE_ERROR("bta_gatts_stop_service service_id= %d",
p_srvc_cb->service_id);
if (p_rcb->p_cback) (*p_rcb->p_cback)(BTA_GATTS_STOP_EVT, &cb_data);
}
/*******************************************************************************
*
* Function bta_gatts_send_rsp
*
* Description GATTS send response.
*
* Returns none.
*
******************************************************************************/
void bta_gatts_send_rsp(UNUSED_ATTR tBTA_GATTS_CB* p_cb,
tBTA_GATTS_DATA* p_msg) {
if (GATTS_SendRsp(p_msg->api_rsp.hdr.layer_specific, p_msg->api_rsp.trans_id,
p_msg->api_rsp.status,
(tGATTS_RSP*)p_msg->api_rsp.p_rsp) != GATT_SUCCESS) {
APPL_TRACE_ERROR("Sending response failed");
}
}
/*******************************************************************************
*
* Function bta_gatts_indicate_handle
*
* Description GATTS send handle value indication or notification.
*
* Returns none.
*
******************************************************************************/
void bta_gatts_indicate_handle(tBTA_GATTS_CB* p_cb, tBTA_GATTS_DATA* p_msg) {
tBTA_GATTS_SRVC_CB* p_srvc_cb;
tBTA_GATTS_RCB* p_rcb = NULL;
tBTA_GATT_STATUS status = BTA_GATT_ILLEGAL_PARAMETER;
tGATT_IF gatt_if;
BD_ADDR remote_bda;
tBTA_TRANSPORT transport;
tBTA_GATTS cb_data;
p_srvc_cb =
bta_gatts_find_srvc_cb_by_attr_id(p_cb, p_msg->api_indicate.attr_id);
if (p_srvc_cb) {
if (GATT_GetConnectionInfor(p_msg->api_indicate.hdr.layer_specific,
&gatt_if, remote_bda, &transport)) {
p_rcb = bta_gatts_find_app_rcb_by_app_if(gatt_if);
if (p_msg->api_indicate.need_confirm)
status = GATTS_HandleValueIndication(
p_msg->api_indicate.hdr.layer_specific, p_msg->api_indicate.attr_id,
p_msg->api_indicate.len, p_msg->api_indicate.value);
else
status = GATTS_HandleValueNotification(
p_msg->api_indicate.hdr.layer_specific, p_msg->api_indicate.attr_id,
p_msg->api_indicate.len, p_msg->api_indicate.value);
/* if over BR_EDR, inform PM for mode change */
if (transport == BTA_TRANSPORT_BR_EDR) {
bta_sys_busy(BTA_ID_GATTS, BTA_ALL_APP_ID, remote_bda);
bta_sys_idle(BTA_ID_GATTS, BTA_ALL_APP_ID, remote_bda);
}
} else {
APPL_TRACE_ERROR("Unknown connection ID: %d fail sending notification",
p_msg->api_indicate.hdr.layer_specific);
}
if ((status != GATT_SUCCESS || !p_msg->api_indicate.need_confirm) &&
p_rcb && p_cb->rcb[p_srvc_cb->rcb_idx].p_cback) {
cb_data.req_data.status = status;
cb_data.req_data.conn_id = p_msg->api_indicate.hdr.layer_specific;
(*p_rcb->p_cback)(BTA_GATTS_CONF_EVT, &cb_data);
}
} else {
APPL_TRACE_ERROR("Not an registered servce attribute ID: 0x%04x",
p_msg->api_indicate.attr_id);
}
}
/*******************************************************************************
*
* Function bta_gatts_open
*
* Description
*
* Returns none.
*
******************************************************************************/
void bta_gatts_open(UNUSED_ATTR tBTA_GATTS_CB* p_cb, tBTA_GATTS_DATA* p_msg) {
tBTA_GATTS_RCB* p_rcb = NULL;
tBTA_GATT_STATUS status = BTA_GATT_ERROR;
uint16_t conn_id;
p_rcb = bta_gatts_find_app_rcb_by_app_if(p_msg->api_open.server_if);
if (p_rcb != NULL) {
/* should always get the connection ID */
if (GATT_Connect(p_rcb->gatt_if, p_msg->api_open.remote_bda,
p_msg->api_open.is_direct, p_msg->api_open.transport,
false)) {
status = BTA_GATT_OK;
if (GATT_GetConnIdIfConnected(p_rcb->gatt_if, p_msg->api_open.remote_bda,
&conn_id, p_msg->api_open.transport)) {
status = BTA_GATT_ALREADY_OPEN;
}
}
} else {
APPL_TRACE_ERROR("Inavlide server_if=%d", p_msg->api_open.server_if);
}
if (p_rcb && p_rcb->p_cback)
(*p_rcb->p_cback)(BTA_GATTS_OPEN_EVT, (tBTA_GATTS*)&status);
}
/*******************************************************************************
*
* Function bta_gatts_cancel_open
*
* Description
*
* Returns none.
*
******************************************************************************/
void bta_gatts_cancel_open(UNUSED_ATTR tBTA_GATTS_CB* p_cb,
tBTA_GATTS_DATA* p_msg) {
tBTA_GATTS_RCB* p_rcb;
tBTA_GATT_STATUS status = BTA_GATT_ERROR;
p_rcb = bta_gatts_find_app_rcb_by_app_if(p_msg->api_cancel_open.server_if);
if (p_rcb != NULL) {
if (!GATT_CancelConnect(p_rcb->gatt_if, p_msg->api_cancel_open.remote_bda,
p_msg->api_cancel_open.is_direct)) {
APPL_TRACE_ERROR("bta_gatts_cancel_open failed for open request");
} else {
status = BTA_GATT_OK;
}
} else {
APPL_TRACE_ERROR("Inavlide server_if=%d", p_msg->api_cancel_open.server_if);
}
if (p_rcb && p_rcb->p_cback)
(*p_rcb->p_cback)(BTA_GATTS_CANCEL_OPEN_EVT, (tBTA_GATTS*)&status);
}
/*******************************************************************************
*
* Function bta_gatts_close
*
* Description
*
* Returns none.
*
******************************************************************************/
void bta_gatts_close(UNUSED_ATTR tBTA_GATTS_CB* p_cb, tBTA_GATTS_DATA* p_msg) {
tBTA_GATTS_RCB* p_rcb;
tBTA_GATT_STATUS status = BTA_GATT_ERROR;
tGATT_IF gatt_if;
BD_ADDR remote_bda;
tBTA_GATT_TRANSPORT transport;
if (GATT_GetConnectionInfor(p_msg->hdr.layer_specific, &gatt_if, remote_bda,
&transport)) {
if (GATT_Disconnect(p_msg->hdr.layer_specific) != GATT_SUCCESS) {
APPL_TRACE_ERROR("bta_gatts_close fail conn_id=%d",
p_msg->hdr.layer_specific);
} else {
status = BTA_GATT_OK;
}
p_rcb = bta_gatts_find_app_rcb_by_app_if(gatt_if);
if (p_rcb && p_rcb->p_cback) {
if (transport == BTA_TRANSPORT_BR_EDR)
bta_sys_conn_close(BTA_ID_GATTS, BTA_ALL_APP_ID, remote_bda);
(*p_rcb->p_cback)(BTA_GATTS_CLOSE_EVT, (tBTA_GATTS*)&status);
}
} else {
APPL_TRACE_ERROR("Unknown connection ID: %d", p_msg->hdr.layer_specific);
}
}
/*******************************************************************************
*
* Function bta_gatts_request_cback
*
* Description GATTS attribute request callback.
*
* Returns none.
*
******************************************************************************/
static void bta_gatts_send_request_cback(uint16_t conn_id, uint32_t trans_id,
tGATTS_REQ_TYPE req_type,
tGATTS_DATA* p_data) {
tBTA_GATTS cb_data;
tBTA_GATTS_RCB* p_rcb;
tGATT_IF gatt_if;
tBTA_GATT_TRANSPORT transport;
memset(&cb_data, 0, sizeof(tBTA_GATTS));
if (GATT_GetConnectionInfor(conn_id, &gatt_if, cb_data.req_data.remote_bda,
&transport)) {
p_rcb = bta_gatts_find_app_rcb_by_app_if(gatt_if);
APPL_TRACE_DEBUG("%s: conn_id=%d trans_id=%d req_type=%d", __func__,
conn_id, trans_id, req_type);
if (p_rcb && p_rcb->p_cback) {
/* if over BR_EDR, inform PM for mode change */
if (transport == BTA_TRANSPORT_BR_EDR) {
bta_sys_busy(BTA_ID_GATTS, BTA_ALL_APP_ID, cb_data.req_data.remote_bda);
bta_sys_idle(BTA_ID_GATTS, BTA_ALL_APP_ID, cb_data.req_data.remote_bda);
}
cb_data.req_data.conn_id = conn_id;
cb_data.req_data.trans_id = trans_id;
cb_data.req_data.p_data = (tBTA_GATTS_REQ_DATA*)p_data;
(*p_rcb->p_cback)(req_type, &cb_data);
} else {
APPL_TRACE_ERROR("connection request on gatt_if[%d] is not interested",
gatt_if);
}
} else {
APPL_TRACE_ERROR("request received on unknown connectino ID: %d", conn_id);
}
}
/*******************************************************************************
*
* Function bta_gatts_conn_cback
*
* Description connection callback.
*
* Returns none.
*
******************************************************************************/
static void bta_gatts_conn_cback(tGATT_IF gatt_if, BD_ADDR bda,
uint16_t conn_id, bool connected,
tGATT_DISCONN_REASON reason,
tGATT_TRANSPORT transport) {
tBTA_GATTS cb_data;
uint8_t evt = connected ? BTA_GATTS_CONNECT_EVT : BTA_GATTS_DISCONNECT_EVT;
tBTA_GATTS_RCB* p_reg;
APPL_TRACE_DEBUG(
"bta_gatts_conn_cback gatt_if=%d conn_id=%d connected=%d reason = 0x%04d",
gatt_if, conn_id, connected, reason);
APPL_TRACE_DEBUG("bta_gatts_conn_cback bda :%02x-%02x-%02x-%02x-%02x-%02x ",
bda[0], bda[1], bda[2], bda[3], bda[4], bda[5]);
bt_bdaddr_t bdaddr;
bdcpy(bdaddr.address, bda);
if (connected)
btif_debug_conn_state(bdaddr, BTIF_DEBUG_CONNECTED, GATT_CONN_UNKNOWN);
else
btif_debug_conn_state(bdaddr, BTIF_DEBUG_DISCONNECTED, reason);
p_reg = bta_gatts_find_app_rcb_by_app_if(gatt_if);
if (p_reg && p_reg->p_cback) {
/* there is no RM for GATT */
if (transport == BTA_TRANSPORT_BR_EDR) {
if (connected)
bta_sys_conn_open(BTA_ID_GATTS, BTA_ALL_APP_ID, bda);
else
bta_sys_conn_close(BTA_ID_GATTS, BTA_ALL_APP_ID, bda);
}
cb_data.conn.conn_id = conn_id;
cb_data.conn.server_if = gatt_if;
cb_data.conn.reason = reason;
cb_data.conn.transport = transport;
memcpy(cb_data.conn.remote_bda, bda, BD_ADDR_LEN);
(*p_reg->p_cback)(evt, &cb_data);
} else {
APPL_TRACE_ERROR("bta_gatts_conn_cback server_if=%d not found", gatt_if);
}
}
static void bta_gatts_phy_update_cback(tGATT_IF gatt_if, uint16_t conn_id,
uint8_t tx_phy, uint8_t rx_phy,
uint8_t status) {
tBTA_GATTS_RCB* p_reg = bta_gatts_find_app_rcb_by_app_if(gatt_if);
if (!p_reg || !p_reg->p_cback) {
APPL_TRACE_ERROR("%s: server_if=%d not found", __func__, gatt_if);
return;
}
tBTA_GATTS cb_data;
cb_data.phy_update.conn_id = conn_id;
cb_data.phy_update.server_if = gatt_if;
cb_data.phy_update.tx_phy = tx_phy;
cb_data.phy_update.rx_phy = rx_phy;
cb_data.phy_update.status = status;
(*p_reg->p_cback)(BTA_GATTS_PHY_UPDATE_EVT, &cb_data);
}
static void bta_gatts_conn_update_cback(tGATT_IF gatt_if, uint16_t conn_id,
uint16_t interval, uint16_t latency,
uint16_t timeout, uint8_t status) {
tBTA_GATTS_RCB* p_reg = bta_gatts_find_app_rcb_by_app_if(gatt_if);
if (!p_reg || !p_reg->p_cback) {
APPL_TRACE_ERROR("%s: server_if=%d not found", __func__, gatt_if);
return;
}
tBTA_GATTS cb_data;
cb_data.conn_update.conn_id = conn_id;
cb_data.conn_update.server_if = gatt_if;
cb_data.conn_update.interval = interval;
cb_data.conn_update.latency = latency;
cb_data.conn_update.timeout = timeout;
cb_data.conn_update.status = status;
(*p_reg->p_cback)(BTA_GATTS_CONN_UPDATE_EVT, &cb_data);
}
/*******************************************************************************
*
* Function bta_gatts_cong_cback
*
* Description congestion callback.
*
* Returns none.
*
******************************************************************************/
static void bta_gatts_cong_cback(uint16_t conn_id, bool congested) {
tBTA_GATTS_RCB* p_rcb;
tGATT_IF gatt_if;
tBTA_GATT_TRANSPORT transport;
tBTA_GATTS cb_data;
if (GATT_GetConnectionInfor(conn_id, &gatt_if, cb_data.req_data.remote_bda,
&transport)) {
p_rcb = bta_gatts_find_app_rcb_by_app_if(gatt_if);
if (p_rcb && p_rcb->p_cback) {
cb_data.congest.conn_id = conn_id;
cb_data.congest.congested = congested;
(*p_rcb->p_cback)(BTA_GATTS_CONGEST_EVT, &cb_data);
}
}
}