124 lines
4.3 KiB
C
124 lines
4.3 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* 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.openairinterface.org/?page_id=698
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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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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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/*! \file l2_nr_interface.c
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* \brief layer 2 interface, used to support different RRC sublayer
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* \author Raymond Knopp and Navid Nikaein, WEI-TAI CHEN
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* \date 2010-2014, 2018
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* \version 1.0
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* \company Eurecom, NTUST
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* \email: raymond.knopp@eurecom.fr, kroempa@gmail.com
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*/
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#include "platform_types.h"
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#include "nr_rrc_defs.h"
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#include "nr_rrc_extern.h"
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#include "common/utils/LOG/log.h"
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#include "pdcp.h"
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#include "msc.h"
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#include "common/ran_context.h"
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#include "intertask_interface.h"
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#include "NR_MIB.h"
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#include "NR_BCCH-BCH-Message.h"
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extern RAN_CONTEXT_t RC;
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int8_t mac_rrc_nr_data_req(const module_id_t Mod_idP,
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const int CC_id,
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const frame_t frameP,
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const rb_id_t Srb_id,
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const uint8_t Nb_tb,
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uint8_t *const buffer_pP ){
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asn_enc_rval_t enc_rval;
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uint8_t Sdu_size = 0;
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uint8_t sfn_msb = (uint8_t)((frameP>>4)&0x3f);
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#ifdef DEBUG_RRC
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LOG_D(RRC,"[eNB %d] mac_rrc_data_req to SRB ID=%ld\n",Mod_idP,Srb_id);
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#endif
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gNB_RRC_INST *rrc;
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rrc_gNB_carrier_data_t *carrier;
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NR_BCCH_BCH_Message_t *mib;
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NR_SRB_INFO * srb_info;
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char payload_size, *payload_pP;
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rrc = RC.nrrrc[Mod_idP];
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carrier = &rrc->carrier;
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mib = &carrier->mib;
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srb_info = &carrier->Srb0;
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/* MIBCH */
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if( (Srb_id & RAB_OFFSET ) == MIBCH) {
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mib->message.choice.mib->systemFrameNumber.buf[0] = sfn_msb << 2;
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enc_rval = uper_encode_to_buffer(&asn_DEF_NR_BCCH_BCH_Message,
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NULL,
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(void *)mib,
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carrier->MIB,
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24);
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LOG_D(NR_RRC,"Encoded MIB for frame %d sfn_msb %d (%p), bits %lu\n",frameP,sfn_msb,carrier->MIB,enc_rval.encoded);
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buffer_pP[0]=carrier->MIB[0];
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buffer_pP[1]=carrier->MIB[1];
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buffer_pP[2]=carrier->MIB[2];
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LOG_D(NR_RRC,"MIB PDU buffer_pP[0]=%x , buffer_pP[1]=%x, buffer_pP[2]=%x\n",buffer_pP[0],buffer_pP[1],buffer_pP[2]);
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AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %lu)!\n",
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enc_rval.failed_type->name, enc_rval.encoded);
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return(3);
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}
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/* TODO BCCH SIB1 SIBs */
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if ((Srb_id & RAB_OFFSET ) == BCCH) {
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memcpy(&buffer_pP[0],
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RC.rrc[Mod_idP]->carrier[CC_id].SIB1_MBMS,
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RC.rrc[Mod_idP]->carrier[CC_id].sizeof_SIB1_MBMS);
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}
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/* CCCH */
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if( (Srb_id & RAB_OFFSET ) == CCCH) {
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//struct rrc_eNB_ue_context_s *ue_context_p = rrc_eNB_get_ue_context(RC.rrc[Mod_idP],rnti);
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//if (ue_context_p == NULL) return(0);
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//eNB_RRC_UE_t *ue_p = &ue_context_p->ue_context;
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LOG_D(RRC,"[gNB %d] Frame %d CCCH request (Srb_id %ld)\n", Mod_idP, frameP, Srb_id);
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// srb_info=&ue_p->Srb0;
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payload_size = srb_info->Tx_buffer.payload_size;
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// check if data is there for MAC
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if (payload_size > 0) {
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payload_pP = srb_info->Tx_buffer.Payload;
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LOG_D(RRC,"[gNB %d] CCCH (%p) has %d bytes (dest: %p, src %p)\n", Mod_idP, srb_info, payload_size, buffer_pP, payload_pP);
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// Fill buffer
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memcpy((void *)buffer_pP, (void*)payload_pP, payload_size);
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Sdu_size = payload_size;
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srb_info->Tx_buffer.payload_size = 0;
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}
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return Sdu_size;
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}
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return(0);
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}
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