265 lines
8.4 KiB
C
265 lines
8.4 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 Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
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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 s1ap_mme_encoder.c
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\brief s1ap encode procedures for MME
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\author Sebastien ROUX <sebastien.roux@eurecom.fr>
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\date 2012
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\version 0.1
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*/
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#if 0 /* modified by acetcom */
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#include "intertask_interface.h"
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#endif
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#include "s1ap_common.h"
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#include "s1ap_ies_defs.h"
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#include "s1ap_mme_encoder.h"
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#if 0 /* modified by acetcom */
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#include "s1ap_mme.h"
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#include "assertions.h"
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#include "log.h"
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#else
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#include "core_debug.h"
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#endif
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static inline int s1ap_mme_encode_initial_context_setup_request (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length);
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static inline int s1ap_mme_encode_s1setupresponse (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length);
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static inline int s1ap_mme_encode_s1setupfailure (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length);
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static inline int s1ap_mme_encode_ue_context_release_command (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length);
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static inline int s1ap_mme_encode_downlink_nas_transport (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length);
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static inline int s1ap_mme_encode_initiating (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length);
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static inline int s1ap_mme_encode_successfull_outcome (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * len);
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static inline int s1ap_mme_encode_unsuccessfull_outcome (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * len);
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static inline int
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s1ap_mme_encode_initial_context_setup_request (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length)
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{
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S1ap_InitialContextSetupRequest_t initialContextSetupRequest;
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S1ap_InitialContextSetupRequest_t *initialContextSetupRequest_p = &initialContextSetupRequest;
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memset (initialContextSetupRequest_p, 0, sizeof (S1ap_InitialContextSetupRequest_t));
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if (s1ap_encode_s1ap_initialcontextsetuprequesties (initialContextSetupRequest_p, &message_p->msg.s1ap_InitialContextSetupRequestIEs) < 0) {
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return -1;
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}
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return s1ap_generate_initiating_message (buffer, length, S1ap_ProcedureCode_id_InitialContextSetup, S1ap_Criticality_reject, &asn_DEF_S1ap_InitialContextSetupRequest, initialContextSetupRequest_p);
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}
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int
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s1ap_mme_encode_pdu (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length)
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{
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d_assert (message_p != NULL, return -1, "Null param");
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d_assert (buffer != NULL, return -1, "Null param");
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d_assert (length != NULL, return -1, "Null param");
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switch (message_p->direction) {
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case S1AP_PDU_PR_initiatingMessage:
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return s1ap_mme_encode_initiating (message_p, buffer, length);
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case S1AP_PDU_PR_successfulOutcome:
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return s1ap_mme_encode_successfull_outcome (message_p, buffer, length);
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case S1AP_PDU_PR_unsuccessfulOutcome:
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return s1ap_mme_encode_unsuccessfull_outcome (message_p, buffer, length);
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default:
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d_warn("Unknown message outcome (%d) or not implemented", (int)message_p->direction);
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break;
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}
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return -1;
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}
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static inline int
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s1ap_mme_encode_initiating (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length)
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{
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switch (message_p->procedureCode) {
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case S1ap_ProcedureCode_id_downlinkNASTransport:
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return s1ap_mme_encode_downlink_nas_transport (message_p, buffer, length);
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case S1ap_ProcedureCode_id_InitialContextSetup:
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return s1ap_mme_encode_initial_context_setup_request (message_p, buffer, length);
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case S1ap_ProcedureCode_id_UEContextRelease:
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return s1ap_mme_encode_ue_context_release_command (message_p, buffer, length);
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default:
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d_warn("Unknown procedure ID (%d) for initiating message_p\n", (int)message_p->procedureCode);
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break;
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}
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return -1;
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}
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static inline int
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s1ap_mme_encode_successfull_outcome (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length)
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{
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switch (message_p->procedureCode) {
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case S1ap_ProcedureCode_id_S1Setup:
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return s1ap_mme_encode_s1setupresponse (message_p, buffer, length);
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default:
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d_warn("Unknown procedure ID (%d) for successfull outcome message\n", (int)message_p->procedureCode);
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break;
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}
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return -1;
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}
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static inline int
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s1ap_mme_encode_unsuccessfull_outcome (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length)
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{
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switch (message_p->procedureCode) {
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case S1ap_ProcedureCode_id_S1Setup:
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return s1ap_mme_encode_s1setupfailure (message_p, buffer, length);
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default:
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d_warn("Unknown procedure ID (%d) for unsuccessfull outcome message\n", (int)message_p->procedureCode);
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break;
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}
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return -1;
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}
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static inline int
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s1ap_mme_encode_s1setupresponse (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length)
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{
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S1ap_S1SetupResponse_t s1SetupResponse;
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S1ap_S1SetupResponse_t *s1SetupResponse_p = &s1SetupResponse;
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memset (s1SetupResponse_p, 0, sizeof (S1ap_S1SetupResponse_t));
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if (s1ap_encode_s1ap_s1setupresponseies (s1SetupResponse_p, &message_p->msg.s1ap_S1SetupResponseIEs) < 0) {
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return -1;
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}
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return s1ap_generate_successfull_outcome (buffer, length, S1ap_ProcedureCode_id_S1Setup, message_p->criticality, &asn_DEF_S1ap_S1SetupResponse, s1SetupResponse_p);
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}
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static inline int
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s1ap_mme_encode_s1setupfailure (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length)
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{
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S1ap_S1SetupFailure_t s1SetupFailure;
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S1ap_S1SetupFailure_t *s1SetupFailure_p = &s1SetupFailure;
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memset (s1SetupFailure_p, 0, sizeof (S1ap_S1SetupFailure_t));
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if (s1ap_encode_s1ap_s1setupfailureies (s1SetupFailure_p, &message_p->msg.s1ap_S1SetupFailureIEs) < 0) {
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return -1;
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}
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return s1ap_generate_unsuccessfull_outcome (buffer, length, S1ap_ProcedureCode_id_S1Setup, message_p->criticality, &asn_DEF_S1ap_S1SetupFailure, s1SetupFailure_p);
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}
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static inline int
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s1ap_mme_encode_downlink_nas_transport (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length)
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{
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S1ap_DownlinkNASTransport_t downlinkNasTransport;
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S1ap_DownlinkNASTransport_t *downlinkNasTransport_p = &downlinkNasTransport;
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memset (downlinkNasTransport_p, 0, sizeof (S1ap_DownlinkNASTransport_t));
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/*
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* Convert IE structure into asn1 message_p
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*/
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if (s1ap_encode_s1ap_downlinknastransport_ies (downlinkNasTransport_p, &message_p->msg.s1ap_DownlinkNASTransport_IEs) < 0) {
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return -1;
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}
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/*
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* Generate Initiating message_p for the list of IEs
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*/
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return s1ap_generate_initiating_message (buffer, length, S1ap_ProcedureCode_id_downlinkNASTransport, message_p->criticality, &asn_DEF_S1ap_DownlinkNASTransport, downlinkNasTransport_p);
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}
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static inline int
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s1ap_mme_encode_ue_context_release_command (
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s1ap_message * message_p,
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uint8_t ** buffer,
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uint32_t * length)
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{
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S1ap_UEContextReleaseCommand_t ueContextReleaseCommand;
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S1ap_UEContextReleaseCommand_t *ueContextReleaseCommand_p = &ueContextReleaseCommand;
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memset (ueContextReleaseCommand_p, 0, sizeof (S1ap_UEContextReleaseCommand_t));
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/*
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* Convert IE structure into asn1 message_p
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*/
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if (s1ap_encode_s1ap_uecontextreleasecommand_ies (ueContextReleaseCommand_p, &message_p->msg.s1ap_UEContextReleaseCommand_IEs) < 0) {
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return -1;
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}
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return s1ap_generate_initiating_message (buffer, length, S1ap_ProcedureCode_id_UEContextRelease, message_p->criticality, &asn_DEF_S1ap_UEContextReleaseCommand, ueContextReleaseCommand_p);
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}
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