Robert Schmidt
4c2bfe7a1f
To allow to send F1 messages to multiple DUs from the CU, we need to send these messages via different assoc_id (SCTP association ID, basically akin to a file descriptor). Currently, the assoc_id is stored in a context at the F1 module and retrieved in f1ap_itti_send_sctp_data_req(). To facilitate a later change towards indicating (from the RRC) to which assoc_id (hence, DU) to send a message, we refactor all CU_send_*()/DU_send_*() functions to take the assoc_id as a parameter to which to send messages. In this commit, we then pass the assoc_id from the context. A later commit changes this (at the CU) to pass the assoc_id from the message to be sent.
121 lines
4.5 KiB
C
121 lines
4.5 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 f1ap_cu_paging.c
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* \brief f1ap interface paging for CU
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* \author EURECOM/NTUST
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* \date 2018
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* \version 0.1
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* \company Eurecom
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* \email: navid.nikaein@eurecom.fr, bing-kai.hong@eurecom.fr
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* \note
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* \warning
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*/
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#include "f1ap_common.h"
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#include "f1ap_encoder.h"
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#include "f1ap_itti_messaging.h"
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#include "f1ap_cu_paging.h"
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extern f1ap_setup_req_t *f1ap_du_data_from_du;
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int CU_send_Paging(sctp_assoc_t assoc_id, f1ap_paging_ind_t *paging)
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{
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F1AP_F1AP_PDU_t pdu = {0};
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pdu.present = F1AP_F1AP_PDU_PR_initiatingMessage;
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asn1cCalloc(pdu.choice.initiatingMessage, msg);
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msg->procedureCode = F1AP_ProcedureCode_id_Paging;
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msg->criticality = F1AP_Criticality_reject;
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msg->value.present = F1AP_InitiatingMessage__value_PR_Paging;
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/* mandatory */
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/* UEIdentityIndexValue */
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{
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asn1cSequenceAdd(msg->value.choice.Paging.protocolIEs.list,
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F1AP_PagingIEs_t, ie);
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ie->id = F1AP_ProtocolIE_ID_id_UEIdentityIndexValue;
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ie->criticality = F1AP_Criticality_reject;
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ie->value.present = F1AP_PagingIEs__value_PR_UEIdentityIndexValue;
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ie->value.choice.UEIdentityIndexValue.present =
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F1AP_UEIdentityIndexValue_PR_indexLength10;
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UEIDENTITYINDEX_TO_BIT_STRING(
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paging->ueidentityindexvalue,
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&ie->value.choice.UEIdentityIndexValue.choice.indexLength10);
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}
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/* mandatory */
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/* PagingIdentity */
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{
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asn1cSequenceAdd(msg->value.choice.Paging.protocolIEs.list,
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F1AP_PagingIEs_t, ie);
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ie->id = F1AP_ProtocolIE_ID_id_PagingIdentity;
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ie->criticality = F1AP_Criticality_reject;
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ie->value.present = F1AP_PagingIEs__value_PR_PagingIdentity;
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ie->value.choice.PagingIdentity.present =
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F1AP_PagingIdentity_PR_cNUEPagingIdentity;
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asn1cCalloc(ie->value.choice.PagingIdentity.choice.cNUEPagingIdentity, id);
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id->present = F1AP_CNUEPagingIdentity_PR_fiveG_S_TMSI;
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FIVEG_S_TMSI_TO_BIT_STRING(paging->fiveg_s_tmsi, &id->choice.fiveG_S_TMSI);
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}
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/* optional */
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/* PagingDRX */
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{
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asn1cSequenceAdd(msg->value.choice.Paging.protocolIEs.list,
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F1AP_PagingIEs_t, ie);
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ie->id = F1AP_ProtocolIE_ID_id_PagingDRX;
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ie->criticality = F1AP_Criticality_ignore;
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ie->value.present = F1AP_PagingIEs__value_PR_PagingDRX;
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ie->value.choice.PagingDRX = paging->paging_drx;
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}
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/* mandatory */
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/* PagingCell_list */
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{
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asn1cSequenceAdd(msg->value.choice.Paging.protocolIEs.list,
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F1AP_PagingIEs_t, ie);
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ie->id = F1AP_ProtocolIE_ID_id_PagingCell_List;
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ie->criticality = F1AP_Criticality_reject;
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ie->value.present = F1AP_PagingIEs__value_PR_PagingCell_list;
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asn1cSequenceAdd(ie->value.choice.PagingCell_list,
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F1AP_PagingCell_ItemIEs_t, itemies);
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itemies->id = F1AP_ProtocolIE_ID_id_PagingCell_Item;
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itemies->criticality = F1AP_Criticality_reject;
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itemies->value.present = F1AP_PagingCell_ItemIEs__value_PR_PagingCell_Item;
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F1AP_NRCGI_t *nRCGI = &itemies->value.choice.PagingCell_Item.nRCGI;
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MCC_MNC_TO_PLMNID(paging->plmn.mcc, paging->plmn.mnc, paging->plmn.mnc_digit_length, &nRCGI->pLMN_Identity);
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NR_CELL_ID_TO_BIT_STRING(paging->nr_cellid, &nRCGI->nRCellIdentity);
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}
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uint8_t *buffer;
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uint32_t len;
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/* encode */
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if (f1ap_encode_pdu(&pdu, &buffer, &len) < 0) {
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LOG_E(F1AP, "Failed to encode F1 Paging failure\n");
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ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_F1AP_F1AP_PDU, &pdu);
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return -1;
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}
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ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_F1AP_F1AP_PDU, &pdu);
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f1ap_itti_send_sctp_data_req(assoc_id, buffer, len);
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return 0;
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}
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