157 lines
5.2 KiB
C++
157 lines
5.2 KiB
C++
/******************************************************************************
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*
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* Copyright (C) 2009-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This is the implementation file for the MCAP Data Channel Action
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* Functions.
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*
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******************************************************************************/
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#include <stddef.h>
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#include "bt_common.h"
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#include "bt_target.h"
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#include "bt_utils.h"
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#include "mca_api.h"
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#include "mca_int.h"
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#include "osi/include/osi.h"
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/*******************************************************************************
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*
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* Function mca_dcb_report_cong
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*
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* Description This function is called to report the congestion flag.
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*
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* Returns void.
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*
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******************************************************************************/
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void mca_dcb_report_cong(tMCA_DCB* p_dcb) {
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tMCA_CTRL evt_data;
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evt_data.cong_chg.cong = p_dcb->cong;
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evt_data.cong_chg.mdl = mca_dcb_to_hdl(p_dcb);
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evt_data.cong_chg.mdl_id = p_dcb->mdl_id;
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mca_ccb_report_event(p_dcb->p_ccb, MCA_CONG_CHG_EVT, &evt_data);
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}
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/*******************************************************************************
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*
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* Function mca_dcb_tc_open
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*
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* Description This function is called to report MCA_OPEN_IND_EVT or
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* MCA_OPEN_CFM_EVT event.
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* It also clears the congestion flag (dcb.cong).
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*
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* Returns void.
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*
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******************************************************************************/
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void mca_dcb_tc_open(tMCA_DCB* p_dcb, tMCA_DCB_EVT* p_data) {
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tMCA_CTRL evt_data;
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tMCA_CCB* p_ccb = p_dcb->p_ccb;
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uint8_t event = MCA_OPEN_IND_EVT;
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if (p_data->open.param == MCA_INT) event = MCA_OPEN_CFM_EVT;
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p_dcb->cong = false;
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evt_data.open_cfm.mtu = p_data->open.peer_mtu;
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evt_data.open_cfm.mdl_id = p_dcb->mdl_id;
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evt_data.open_cfm.mdl = mca_dcb_to_hdl(p_dcb);
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mca_ccb_event(p_ccb, MCA_CCB_DL_OPEN_EVT, NULL);
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mca_ccb_report_event(p_ccb, event, &evt_data);
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}
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/*******************************************************************************
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*
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* Function mca_dcb_cong
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*
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* Description This function sets the congestion state for the DCB.
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*
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* Returns void.
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*
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******************************************************************************/
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void mca_dcb_cong(tMCA_DCB* p_dcb, tMCA_DCB_EVT* p_data) {
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p_dcb->cong = p_data->llcong;
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mca_dcb_report_cong(p_dcb);
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}
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/*******************************************************************************
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*
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* Function mca_dcb_free_data
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*
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* Description This function frees the received message.
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*
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* Returns void.
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*
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******************************************************************************/
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void mca_dcb_free_data(UNUSED_ATTR tMCA_DCB* p_dcb, tMCA_DCB_EVT* p_data) {
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osi_free(p_data);
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}
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/*******************************************************************************
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*
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* Function mca_dcb_do_disconn
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*
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* Description This function closes a data channel.
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*
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* Returns void.
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*
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******************************************************************************/
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void mca_dcb_do_disconn(tMCA_DCB* p_dcb, UNUSED_ATTR tMCA_DCB_EVT* p_data) {
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if ((p_dcb->lcid == 0) || (L2CA_DisconnectReq(p_dcb->lcid) == false)) {
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tMCA_CLOSE close;
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close.param = MCA_INT;
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close.reason = L2CAP_DISC_OK;
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close.lcid = 0;
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tMCA_DCB_EVT mca_dcb_evt;
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mca_dcb_evt.close = close;
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mca_dcb_event(p_dcb, MCA_DCB_TC_CLOSE_EVT, &mca_dcb_evt);
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}
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}
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/*******************************************************************************
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*
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* Function mca_dcb_snd_data
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*
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* Description Send the data from application to the peer device.
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*
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* Returns void.
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*
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******************************************************************************/
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void mca_dcb_snd_data(tMCA_DCB* p_dcb, tMCA_DCB_EVT* p_data) {
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uint8_t status;
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/* do not need to check cong, because API already checked the status */
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status = L2CA_DataWrite(p_dcb->lcid, p_data->p_pkt);
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if (status == L2CAP_DW_CONGESTED) {
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p_dcb->cong = true;
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mca_dcb_report_cong(p_dcb);
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}
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}
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/*******************************************************************************
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*
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* Function mca_dcb_hdl_data
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*
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* Description This function reports the received data through the data
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* callback function.
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*
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* Returns void.
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*
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******************************************************************************/
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void mca_dcb_hdl_data(tMCA_DCB* p_dcb, tMCA_DCB_EVT* p_data) {
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(*p_dcb->p_cs->p_data_cback)(mca_dcb_to_hdl(p_dcb), (BT_HDR*)p_data);
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}
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