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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 l2_nr_interface.c
* \brief layer 2 interface, used to support different RRC sublayer
* \author Raymond Knopp and Navid Nikaein, WEI-TAI CHEN
* \date 2010-2014, 2018
* \version 1.0
* \company Eurecom, NTUST
* \email: raymond.knopp@eurecom.fr, kroempa@gmail.com
*/
#include "platform_types.h"
#include "nr_rrc_defs.h"
#include "nr_rrc_extern.h"
#include "common/utils/LOG/log.h"
#include "pdcp.h"
#include "msc.h"
#include "common/ran_context.h"
#include "intertask_interface.h"
#include "NR_MIB.h"
#include "NR_BCCH-BCH-Message.h"
extern RAN_CONTEXT_t RC;
int8_t mac_rrc_nr_data_req(const module_id_t Mod_idP,
const int CC_id,
const frame_t frameP,
const rb_id_t Srb_id,
const uint8_t Nb_tb,
uint8_t *const buffer_pP ){
asn_enc_rval_t enc_rval;
uint8_t Sdu_size = 0;
uint8_t sfn_msb = (uint8_t)((frameP>>4)&0x3f);
#ifdef DEBUG_RRC
LOG_D(RRC,"[eNB %d] mac_rrc_data_req to SRB ID=%ld\n",Mod_idP,Srb_id);
#endif
gNB_RRC_INST *rrc;
rrc_gNB_carrier_data_t *carrier;
NR_BCCH_BCH_Message_t *mib;
NR_SRB_INFO * srb_info;
char payload_size, *payload_pP;
rrc = RC.nrrrc[Mod_idP];
carrier = &rrc->carrier;
mib = &carrier->mib;
srb_info = &carrier->Srb0;
/* MIBCH */
if( (Srb_id & RAB_OFFSET ) == MIBCH) {
mib->message.choice.mib->systemFrameNumber.buf[0] = sfn_msb << 2;
enc_rval = uper_encode_to_buffer(&asn_DEF_NR_BCCH_BCH_Message,
NULL,
(void *)mib,
carrier->MIB,
24);
LOG_D(NR_RRC,"Encoded MIB for frame %d sfn_msb %d (%p), bits %lu\n",frameP,sfn_msb,carrier->MIB,enc_rval.encoded);
buffer_pP[0]=carrier->MIB[0];
buffer_pP[1]=carrier->MIB[1];
buffer_pP[2]=carrier->MIB[2];
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]);
AssertFatal (enc_rval.encoded > 0, "ASN1 message encoding failed (%s, %lu)!\n",
enc_rval.failed_type->name, enc_rval.encoded);
return(3);
}
/* TODO BCCH SIB1 SIBs */
/* CCCH */
if( (Srb_id & RAB_OFFSET ) == CCCH) {
//struct rrc_eNB_ue_context_s *ue_context_p = rrc_eNB_get_ue_context(RC.rrc[Mod_idP],rnti);
//if (ue_context_p == NULL) return(0);
//eNB_RRC_UE_t *ue_p = &ue_context_p->ue_context;
LOG_D(RRC,"[gNB %d] Frame %d CCCH request (Srb_id %ld)\n", Mod_idP, frameP, Srb_id);
// srb_info=&ue_p->Srb0;
payload_size = srb_info->Tx_buffer.payload_size;
// check if data is there for MAC
if (payload_size > 0) {
payload_pP = srb_info->Tx_buffer.Payload;
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);
// Fill buffer
memcpy((void *)buffer_pP, (void*)payload_pP, payload_size);
Sdu_size = payload_size;
srb_info->Tx_buffer.payload_size = 0;
}
return Sdu_size;
}
return(0);
}