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/******************************************************************************
*
* Copyright 2009-2012 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 is the implementation file for the MCAP Data Channel Action
* Functions.
*
******************************************************************************/
#include <stddef.h>
#include "bt_common.h"
#include "bt_target.h"
#include "bt_utils.h"
#include "mca_api.h"
#include "mca_int.h"
#include "osi/include/osi.h"
/*******************************************************************************
*
* Function mca_dcb_report_cong
*
* Description This function is called to report the congestion flag.
*
* Returns void.
*
******************************************************************************/
void mca_dcb_report_cong(tMCA_DCB* p_dcb) {
tMCA_CTRL evt_data;
evt_data.cong_chg.cong = p_dcb->cong;
evt_data.cong_chg.mdl = mca_dcb_to_hdl(p_dcb);
evt_data.cong_chg.mdl_id = p_dcb->mdl_id;
mca_ccb_report_event(p_dcb->p_ccb, MCA_CONG_CHG_EVT, &evt_data);
}
/*******************************************************************************
*
* Function mca_dcb_tc_open
*
* Description This function is called to report MCA_OPEN_IND_EVT or
* MCA_OPEN_CFM_EVT event.
* It also clears the congestion flag (dcb.cong).
*
* Returns void.
*
******************************************************************************/
void mca_dcb_tc_open(tMCA_DCB* p_dcb, tMCA_DCB_EVT* p_data) {
tMCA_CTRL evt_data;
tMCA_CCB* p_ccb = p_dcb->p_ccb;
uint8_t event = MCA_OPEN_IND_EVT;
if (p_data->open.param == MCA_INT) event = MCA_OPEN_CFM_EVT;
p_dcb->cong = false;
evt_data.open_cfm.mtu = p_data->open.peer_mtu;
evt_data.open_cfm.mdl_id = p_dcb->mdl_id;
evt_data.open_cfm.mdl = mca_dcb_to_hdl(p_dcb);
mca_ccb_event(p_ccb, MCA_CCB_DL_OPEN_EVT, NULL);
mca_ccb_report_event(p_ccb, event, &evt_data);
}
/*******************************************************************************
*
* Function mca_dcb_cong
*
* Description This function sets the congestion state for the DCB.
*
* Returns void.
*
******************************************************************************/
void mca_dcb_cong(tMCA_DCB* p_dcb, tMCA_DCB_EVT* p_data) {
p_dcb->cong = p_data->llcong;
mca_dcb_report_cong(p_dcb);
}
/*******************************************************************************
*
* Function mca_dcb_free_data
*
* Description This function frees the received message.
*
* Returns void.
*
******************************************************************************/
void mca_dcb_free_data(UNUSED_ATTR tMCA_DCB* p_dcb, tMCA_DCB_EVT* p_data) {
osi_free(p_data);
}
/*******************************************************************************
*
* Function mca_dcb_do_disconn
*
* Description This function closes a data channel.
*
* Returns void.
*
******************************************************************************/
void mca_dcb_do_disconn(tMCA_DCB* p_dcb, UNUSED_ATTR tMCA_DCB_EVT* p_data) {
if ((p_dcb->lcid == 0) || (!L2CA_DisconnectReq(p_dcb->lcid))) {
tMCA_CLOSE close;
close.param = MCA_INT;
close.reason = L2CAP_DISC_OK;
close.lcid = 0;
tMCA_DCB_EVT mca_dcb_evt;
mca_dcb_evt.close = close;
mca_dcb_event(p_dcb, MCA_DCB_TC_CLOSE_EVT, &mca_dcb_evt);
}
}
/*******************************************************************************
*
* Function mca_dcb_snd_data
*
* Description Send the data from application to the peer device.
*
* Returns void.
*
******************************************************************************/
void mca_dcb_snd_data(tMCA_DCB* p_dcb, tMCA_DCB_EVT* p_data) {
uint8_t status;
/* do not need to check cong, because API already checked the status */
status = L2CA_DataWrite(p_dcb->lcid, p_data->p_pkt);
if (status == L2CAP_DW_CONGESTED) {
p_dcb->cong = true;
mca_dcb_report_cong(p_dcb);
}
}
/*******************************************************************************
*
* Function mca_dcb_hdl_data
*
* Description This function reports the received data through the data
* callback function.
*
* Returns void.
*
******************************************************************************/
void mca_dcb_hdl_data(tMCA_DCB* p_dcb, tMCA_DCB_EVT* p_data) {
(*p_dcb->p_cs->p_data_cback)(mca_dcb_to_hdl(p_dcb), (BT_HDR*)p_data);
}