Guido Casati
6022ac8bf1
Introduce paging_transfer in the mac_rrc_dl interface so the CU can pass paging to the DU (F1 or direct). Use the F1AP paging lib on both CU and DU for decode/free and to avoid leaking the message after send. - Add f1_paging_transfer_func_t and paging_transfer to nr_mac_rrc_dl_if_s (mac_rrc_dl.h, nr_rrc_defs.h). - F1AP path: paging_f1ap() allocates F1AP_PAGING, copies with cp_f1ap_paging(), sends via ITTI to TASK_CU_F1. Direct path: f1_paging_transfer_direct() stub - CU task: call free_f1ap_paging() after CU_send_Paging() to release the message. - DU: DU_handle_Paging() uses decode_f1ap_paging()/free_f1ap_paging() from lib, returns on decode failure; remove inline ASN.1 IE parsing. - cleanup outdated header comments in header files - Left a TODO not in DU code to build PCCH (in F1 and direct paths)
56 lines
1.9 KiB
C
56 lines
1.9 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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#include "f1ap_common.h"
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#include "f1ap_du_paging.h"
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#include "lib/f1ap_paging.h"
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#include "conversions.h"
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#include "oai_asn1.h"
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#include "openair2/RRC/LTE/rrc_proto.h"
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/* @brief Handle F1AP Paging message at DU */
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int DU_handle_Paging(instance_t instance, sctp_assoc_t assoc_id, uint32_t stream, F1AP_F1AP_PDU_t *pdu)
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{
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f1ap_paging_t decoded = {0};
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DevAssert(pdu);
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(void)instance;
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(void)assoc_id;
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(void)stream;
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if (LOG_DEBUGFLAG(DEBUG_ASN1)) {
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xer_fprint(stdout, &asn_DEF_F1AP_F1AP_PDU, pdu);
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}
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if (!decode_f1ap_paging(&decoded, pdu)) {
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LOG_E(F1AP, "Failed to decode F1AP Paging\n");
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return -1;
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}
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/** @todo Build PCCH-Message (Paging) at DU per TS 38.331 §5.3.2; apply
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* RRC padding per §8.5; deliver as RLC SDU per §8.2. For each
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* cell in Paging Cell List that belongs to this DU, queue for MAC; MAC schedules
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* at PF/PO per TS 38.304 §7. */
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free_f1ap_paging(&decoded);
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return 0;
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}
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