sldch.c 2.31 KB
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/*
 * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The OpenAirInterface Software Alliance licenses this file to You under
 * the OAI Public License, Version 1.1  (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.openairinterface.org/?page_id=698
 *
 * 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.
 *-------------------------------------------------------------------------------
 * For more information about the OpenAirInterface (OAI) Software Alliance:
 *      contact@openairinterface.org
 */

/*! \file PHY/LTE_TRANSPORT/slss.c
 * \brief Functions to Generate and Receive PSDCH
 * \author R. Knopp
 * \date 2017
 * \version 0.1
 * \company Eurecom
 * \email: knopp@eurecom.fr
 * \note
 * \warning
 */
#ifndef __LTE_TRANSPORT_SLSS__C__
#define __LTE_TRANSPORT_SLSS__C__
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#include "PHY/defs_UE.h"
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extern int multicast_link_write_sock(int groupP, char *dataP, uint32_t sizeP);

void generate_sldch(PHY_VARS_UE *ue,SLDCH_t *sldch,int frame_tx,int subframe_tx) {

  UE_tport_t pdu;
  size_t sldch_header_len = sizeof(UE_tport_header_t);

  pdu.header.packet_type = SLDCH;
  pdu.header.absSF = (frame_tx*10)+subframe_tx;


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  AssertFatal((sldch->payload_length <=1500-sldch_header_len - sizeof(SLDCH_t) + sizeof(uint8_t*)),
                "SLDCH payload length > %zd\n",
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                1500-sldch_header_len - sizeof(SLDCH_t) + sizeof(uint8_t*));
  memcpy((void*)&pdu.sldch,
         (void*)sldch,
         sizeof(SLDCH_t));

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  LOG_I(PHY,"SLDCH configuration %zd bytes, TBS payload %d bytes => %zd bytes\n",
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        sizeof(SLDCH_t)-sizeof(uint8_t*),
        sldch->payload_length,
        sldch_header_len+sizeof(SLDCH_t)-sizeof(uint8_t*)+sldch->payload_length);

  multicast_link_write_sock(0,
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                            (char *)&pdu,
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                            sldch_header_len+sizeof(SLDCH_t));

}


#endif