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/******************************************************************************
*
* Copyright (C) 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 "bt_target.h"
#include "gki.h"
#include "mca_api.h"
#include "mca_int.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 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 (tMCA_DCB *p_dcb, tMCA_DCB_EVT *p_data)
{
GKI_freebuf (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, tMCA_DCB_EVT *p_data)
{
tMCA_CLOSE close;
if ((p_dcb->lcid == 0) || (L2CA_DisconnectReq(p_dcb->lcid) == FALSE))
{
close.param = MCA_INT;
close.reason = L2CAP_DISC_OK;
close.lcid = 0;
mca_dcb_event(p_dcb, MCA_DCB_TC_CLOSE_EVT, (tMCA_DCB_EVT *) &close);
}
}
/*******************************************************************************
**
** Function mca_dcb_snd_data
**
** Description This function sends 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 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);
}
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