blob: cf5b6c0fbbf662a994ea4a752230b1cf02105c59 [file] [log] [blame]
/******************************************************************************
*
* Copyright 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 <base/logging.h>
#include <bluetooth/log.h>
#include <cstdint>
#include "bta/gatt/bta_gatts_int.h"
#include "bta/include/bta_api.h"
#include "btif/include/btif_debug_conn.h"
#include "internal_include/bt_target.h"
#include "internal_include/bt_trace.h"
#include "osi/include/allocator.h"
#include "osi/include/osi.h"
#include "stack/include/gatt_api.h"
#include "types/raw_address.h"
using namespace bluetooth;
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, const RawAddress& bda,
uint16_t conn_id, bool connected,
tGATT_DISCONN_REASON reason,
tBT_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,
tGATT_STATUS 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, tGATT_STATUS status);
static void bta_gatts_subrate_chg_cback(tGATT_IF gatt_if, uint16_t conn_id,
uint16_t subrate_factor,
uint16_t latency, uint16_t cont_num,
uint16_t timeout, tGATT_STATUS status);
static tGATT_CBACK bta_gatts_cback = {
.p_conn_cb = bta_gatts_conn_cback,
.p_cmpl_cb = nullptr,
.p_disc_res_cb = nullptr,
.p_disc_cmpl_cb = nullptr,
.p_req_cb = bta_gatts_send_request_cback,
.p_enc_cmpl_cb = nullptr,
.p_congestion_cb = bta_gatts_cong_cback,
.p_phy_update_cb = bta_gatts_phy_update_cback,
.p_conn_update_cb = bta_gatts_conn_update_cback,
.p_subrate_chg_cb = bta_gatts_subrate_chg_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) {}
/*******************************************************************************
*
* 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 false;
}
/*******************************************************************************
*
* Function bta_gatts_enable
*
* Description enable BTA GATTS module.
*
* Returns none.
*
******************************************************************************/
void bta_gatts_enable(tBTA_GATTS_CB* p_cb) {
if (p_cb->enabled) {
log::verbose("GATTS already enabled.");
} else {
memset(p_cb, 0, sizeof(tBTA_GATTS_CB));
p_cb->enabled = true;
gatt_load_bonded();
if (!GATTS_NVRegister(&bta_gatts_nv_cback)) {
log::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 {
log::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;
tGATT_STATUS status = GATT_SUCCESS;
uint8_t i, first_unuse = 0xff;
if (!p_cb->enabled) {
bta_gatts_enable(p_cb);
}
for (i = 0; i < BTA_GATTS_MAX_APP_NUM; i++) {
if (p_cb->rcb[i].in_use) {
if (p_cb->rcb[i].app_uuid == p_msg->api_reg.app_uuid) {
log::error("application already registered.");
status = GATT_DUP_REG;
break;
}
}
}
if (status == GATT_SUCCESS) {
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;
cb_data.reg_oper.uuid = p_msg->api_reg.app_uuid;
if (first_unuse != 0xff) {
log::info("register application first_unuse rcb_idx={}", first_unuse);
p_cb->rcb[first_unuse].in_use = true;
p_cb->rcb[first_unuse].p_cback = p_msg->api_reg.p_cback;
p_cb->rcb[first_unuse].app_uuid = p_msg->api_reg.app_uuid;
cb_data.reg_oper.server_if = p_cb->rcb[first_unuse].gatt_if =
GATT_Register(p_msg->api_reg.app_uuid, "GattServer", &bta_gatts_cback,
p_msg->api_reg.eatt_support);
if (!p_cb->rcb[first_unuse].gatt_if) {
status = 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 = 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 {
log::error("Unable to start app.: Unknown interface={}",
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) {
tGATT_STATUS status = 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 = GATT_SUCCESS;
/* 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 {
log::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_srvc_cb->service_id;
if (GATTS_DeleteService(p_rcb->gatt_if, &p_srvc_cb->service_uuid,
p_srvc_cb->service_id)) {
cb_data.srvc_oper.status = GATT_SUCCESS;
memset(p_srvc_cb, 0, sizeof(tBTA_GATTS_SRVC_CB));
} else {
cb_data.srvc_oper.status = 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 = GATT_SUCCESS;
log::error("service_id={}", 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) {
log::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;
tGATT_STATUS status = GATT_ILLEGAL_PARAMETER;
tGATT_IF gatt_if;
RawAddress remote_bda;
tBT_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 == BT_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 {
log::error("Unknown connection_id={} fail sending notification",
loghex(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 {
log::error("Not an registered servce attribute ID: {}",
loghex(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;
tGATT_STATUS status = 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.connection_type, p_msg->api_open.transport,
false)) {
status = GATT_SUCCESS;
if (GATT_GetConnIdIfConnected(p_rcb->gatt_if, p_msg->api_open.remote_bda,
&conn_id, p_msg->api_open.transport)) {
status = GATT_ALREADY_OPEN;
}
}
} else {
log::error("Inavlid server_if={}", p_msg->api_open.server_if);
}
if (p_rcb && p_rcb->p_cback) {
tBTA_GATTS bta_gatts;
bta_gatts.status = status;
(*p_rcb->p_cback)(BTA_GATTS_OPEN_EVT, &bta_gatts);
}
}
/*******************************************************************************
*
* 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;
tGATT_STATUS status = 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)) {
log::error("failed for open request");
} else {
status = GATT_SUCCESS;
}
} else {
log::error("Inavlid server_if={}", p_msg->api_cancel_open.server_if);
}
if (p_rcb && p_rcb->p_cback) {
tBTA_GATTS bta_gatts;
bta_gatts.status = status;
(*p_rcb->p_cback)(BTA_GATTS_CANCEL_OPEN_EVT, &bta_gatts);
}
}
/*******************************************************************************
*
* 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;
tGATT_STATUS status = GATT_ERROR;
tGATT_IF gatt_if;
RawAddress remote_bda;
tBT_TRANSPORT transport;
if (GATT_GetConnectionInfor(p_msg->hdr.layer_specific, &gatt_if, remote_bda,
&transport)) {
log::debug("Disconnecting gatt_if={}, remote_bda={}, transport={}", gatt_if,
remote_bda.ToString(), transport);
status = GATT_Disconnect(p_msg->hdr.layer_specific);
if (status != GATT_SUCCESS) {
log::error("fail conn_id={}", p_msg->hdr.layer_specific);
status = GATT_ERROR;
}
p_rcb = bta_gatts_find_app_rcb_by_app_if(gatt_if);
if (p_rcb && p_rcb->p_cback) {
if (transport == BT_TRANSPORT_BR_EDR) {
bta_sys_conn_close(BTA_ID_GATTS, BTA_ALL_APP_ID, remote_bda);
}
tBTA_GATTS bta_gatts;
bta_gatts.status = status;
(*p_rcb->p_cback)(BTA_GATTS_CLOSE_EVT, &bta_gatts);
}
} else {
log::error("Unknown connection_id={}", loghex(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;
tBT_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);
log::verbose("conn_id={}, trans_id={}, req_type={}", loghex(conn_id),
trans_id, req_type);
if (p_rcb && p_rcb->p_cback) {
/* if over BR_EDR, inform PM for mode change */
if (transport == BT_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 = (tGATTS_DATA*)p_data;
(*p_rcb->p_cback)(req_type, &cb_data);
} else {
log::error("connection request on gatt_if={} is not interested", gatt_if);
}
} else {
log::error("request received on unknown conn_id={}", loghex(conn_id));
}
}
/*******************************************************************************
*
* Function bta_gatts_conn_cback
*
* Description connection callback.
*
* Returns none.
*
******************************************************************************/
static void bta_gatts_conn_cback(tGATT_IF gatt_if, const RawAddress& bdaddr,
uint16_t conn_id, bool connected,
tGATT_DISCONN_REASON,
tBT_TRANSPORT transport) {
tBTA_GATTS cb_data;
uint8_t evt = connected ? BTA_GATTS_CONNECT_EVT : BTA_GATTS_DISCONNECT_EVT;
tBTA_GATTS_RCB* p_reg;
log::verbose("bda={} gatt_if= {}, conn_id={} connected={}",
ADDRESS_TO_LOGGABLE_STR(bdaddr), gatt_if, loghex(conn_id),
connected);
if (connected)
btif_debug_conn_state(bdaddr, BTIF_DEBUG_CONNECTED, GATT_CONN_OK);
else
btif_debug_conn_state(bdaddr, BTIF_DEBUG_DISCONNECTED, GATT_CONN_OK);
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 == BT_TRANSPORT_BR_EDR) {
if (connected)
bta_sys_conn_open(BTA_ID_GATTS, BTA_ALL_APP_ID, bdaddr);
else
bta_sys_conn_close(BTA_ID_GATTS, BTA_ALL_APP_ID, bdaddr);
}
cb_data.conn.conn_id = conn_id;
cb_data.conn.server_if = gatt_if;
cb_data.conn.transport = transport;
cb_data.conn.remote_bda = bdaddr;
(*p_reg->p_cback)(evt, &cb_data);
} else {
log::error("server_if={} 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,
tGATT_STATUS status) {
tBTA_GATTS_RCB* p_reg = bta_gatts_find_app_rcb_by_app_if(gatt_if);
if (!p_reg || !p_reg->p_cback) {
log::error("server_if={} not found", 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, tGATT_STATUS status) {
tBTA_GATTS_RCB* p_reg = bta_gatts_find_app_rcb_by_app_if(gatt_if);
if (!p_reg || !p_reg->p_cback) {
log::error("server_if={} not found", 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);
}
static void bta_gatts_subrate_chg_cback(tGATT_IF gatt_if, uint16_t conn_id,
uint16_t subrate_factor,
uint16_t latency, uint16_t cont_num,
uint16_t timeout, tGATT_STATUS status) {
tBTA_GATTS_RCB* p_reg = bta_gatts_find_app_rcb_by_app_if(gatt_if);
if (!p_reg || !p_reg->p_cback) {
log::error("server_if={} not found", gatt_if);
return;
}
tBTA_GATTS cb_data;
cb_data.subrate_chg.conn_id = conn_id;
cb_data.subrate_chg.server_if = gatt_if;
cb_data.subrate_chg.subrate_factor = subrate_factor;
cb_data.subrate_chg.latency = latency;
cb_data.subrate_chg.cont_num = cont_num;
cb_data.subrate_chg.timeout = timeout;
cb_data.subrate_chg.status = status;
(*p_reg->p_cback)(BTA_GATTS_SUBRATE_CHG_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;
tBT_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);
}
}
}