Robert Schmidt
8107939f08
- all RAN code, CI code, configuration files, dockerfiles, in CSSL v1.0
- all deployment code (openshift, charts, ancillary files like shell
scripts), in MIT
- documentation in CC-BY-4.0
- exceptions might apply and are listed in NOTICE
- there is a new LICENSES folder with all licenses
- CONTRIBUTIONS.md has been updated accordingly
For automated changes based on OAI PL v1.1:
perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.{c,h,cpp}
perl -i~ -0pe 's/\/\*.*Licensed to the OpenAirInterface.*openairinterface.org\n#?/\/*\n * SPDX-License-Identifier: LicenseRef-CSSL-1.0\n/s' **/*.ts
perl -i~ -0pe 's/<!--.*Licensed to the OpenAirInterface.*openairinterface.org\n.*-->/<!-- SPDX-License-Identifier: LicenseRef-CSSL-1.0 -->/s' **/*.xml
The rest (cmake, files with missing license, cmake) manually.
225 lines
8.6 KiB
C
225 lines
8.6 KiB
C
/*
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* SPDX-License-Identifier: LicenseRef-CSSL-1.0
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*/
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/*!
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* \brief S1AP context management procedures
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* @ingroup _s1ap
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include "assertions.h"
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#include "conversions.h"
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#include "intertask_interface.h"
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#include "s1ap_common.h"
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#include "s1ap_eNB_defs.h"
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#include "s1ap_eNB_itti_messaging.h"
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#include "s1ap_eNB_encoder.h"
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#include "s1ap_eNB_nnsf.h"
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#include "s1ap_eNB_ue_context.h"
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#include "s1ap_eNB_nas_procedures.h"
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#include "s1ap_eNB_management_procedures.h"
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#include "s1ap_eNB_context_management_procedures.h"
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int s1ap_ue_context_release_complete(instance_t instance,
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s1ap_ue_release_complete_t *ue_release_complete_p)
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{
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s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
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struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
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S1AP_S1AP_PDU_t pdu;
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S1AP_UEContextReleaseComplete_t *out;
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S1AP_UEContextReleaseComplete_IEs_t *ie;
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uint8_t *buffer;
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uint32_t length;
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/* Retrieve the S1AP eNB instance associated with Mod_id */
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s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
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DevAssert(ue_release_complete_p != NULL);
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DevAssert(s1ap_eNB_instance_p != NULL);
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/*RB_FOREACH(ue_context_p, s1ap_ue_map, &s1ap_eNB_instance_p->s1ap_ue_head) {
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S1AP_WARN("in s1ap_ue_map: UE context eNB_ue_s1ap_id %u mme_ue_s1ap_id %u state %u\n",
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ue_context_p->eNB_ue_s1ap_id, ue_context_p->mme_ue_s1ap_id,
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ue_context_p->ue_state);
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}*/
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if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
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ue_release_complete_p->eNB_ue_s1ap_id)) == NULL) {
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/* The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs */
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S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: %u\n",
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ue_release_complete_p->eNB_ue_s1ap_id);
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return -1;
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}
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/* Prepare the S1AP message to encode */
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memset(&pdu, 0, sizeof(pdu));
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pdu.present = S1AP_S1AP_PDU_PR_successfulOutcome;
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pdu.choice.successfulOutcome.procedureCode = S1AP_ProcedureCode_id_UEContextRelease;
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pdu.choice.successfulOutcome.criticality = S1AP_Criticality_reject;
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pdu.choice.successfulOutcome.value.present = S1AP_SuccessfulOutcome__value_PR_UEContextReleaseComplete;
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out = &pdu.choice.successfulOutcome.value.choice.UEContextReleaseComplete;
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/* mandatory */
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ie = (S1AP_UEContextReleaseComplete_IEs_t *)calloc(1, sizeof(S1AP_UEContextReleaseComplete_IEs_t));
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ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
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ie->criticality = S1AP_Criticality_ignore;
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ie->value.present = S1AP_UEContextReleaseComplete_IEs__value_PR_MME_UE_S1AP_ID;
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ie->value.choice.MME_UE_S1AP_ID = ue_context_p->mme_ue_s1ap_id;
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asn1cSeqAdd(&out->protocolIEs.list, ie);
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/* mandatory */
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ie = (S1AP_UEContextReleaseComplete_IEs_t *)calloc(1, sizeof(S1AP_UEContextReleaseComplete_IEs_t));
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ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
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ie->criticality = S1AP_Criticality_ignore;
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ie->value.present = S1AP_UEContextReleaseComplete_IEs__value_PR_ENB_UE_S1AP_ID;
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ie->value.choice.ENB_UE_S1AP_ID = ue_release_complete_p->eNB_ue_s1ap_id;
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asn1cSeqAdd(&out->protocolIEs.list, ie);
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if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
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/* Encode procedure has failed... */
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S1AP_ERROR("Failed to encode UE context release complete\n");
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return -1;
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}
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/* UE associated signalling -> use the allocated stream */
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s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
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ue_context_p->mme_ref->assoc_id, buffer,
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length, ue_context_p->tx_stream);
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//LG s1ap_eNB_itti_send_sctp_close_association(s1ap_eNB_instance_p->instance,
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// ue_context_p->mme_ref->assoc_id);
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// release UE context
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struct s1ap_eNB_ue_context_s *ue_context2_p = NULL;
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if ((ue_context2_p = RB_REMOVE(s1ap_ue_map, &s1ap_eNB_instance_p->s1ap_ue_head, ue_context_p))
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!= NULL) {
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S1AP_WARN("Removed UE context eNB_ue_s1ap_id %u\n",
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ue_context2_p->eNB_ue_s1ap_id);
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s1ap_eNB_free_ue_context(ue_context2_p);
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} else {
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S1AP_WARN("Removing UE context eNB_ue_s1ap_id %u: did not find context\n",
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ue_context_p->eNB_ue_s1ap_id);
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}
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/*RB_FOREACH(ue_context_p, s1ap_ue_map, &s1ap_eNB_instance_p->s1ap_ue_head) {
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S1AP_WARN("in s1ap_ue_map: UE context eNB_ue_s1ap_id %u mme_ue_s1ap_id %u state %u\n",
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ue_context_p->eNB_ue_s1ap_id, ue_context_p->mme_ue_s1ap_id,
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ue_context_p->ue_state);
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}*/
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return 0;
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}
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int s1ap_ue_context_release_req(instance_t instance,
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s1ap_ue_release_req_t *ue_release_req_p)
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{
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s1ap_eNB_instance_t *s1ap_eNB_instance_p = NULL;
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struct s1ap_eNB_ue_context_s *ue_context_p = NULL;
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S1AP_S1AP_PDU_t pdu;
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S1AP_UEContextReleaseRequest_t *out;
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S1AP_UEContextReleaseRequest_IEs_t *ie;
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uint8_t *buffer = NULL;
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uint32_t length;
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/* Retrieve the S1AP eNB instance associated with Mod_id */
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s1ap_eNB_instance_p = s1ap_eNB_get_instance(instance);
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DevAssert(ue_release_req_p != NULL);
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DevAssert(s1ap_eNB_instance_p != NULL);
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if ((ue_context_p = s1ap_eNB_get_ue_context(s1ap_eNB_instance_p,
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ue_release_req_p->eNB_ue_s1ap_id)) == NULL) {
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/* The context for this eNB ue s1ap id doesn't exist in the map of eNB UEs */
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S1AP_WARN("Failed to find ue context associated with eNB ue s1ap id: %u\n",
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ue_release_req_p->eNB_ue_s1ap_id);
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return -1;
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}
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/* Prepare the S1AP message to encode */
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memset(&pdu, 0, sizeof(pdu));
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pdu.present = S1AP_S1AP_PDU_PR_initiatingMessage;
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pdu.choice.initiatingMessage.procedureCode = S1AP_ProcedureCode_id_UEContextReleaseRequest;
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pdu.choice.initiatingMessage.criticality = S1AP_Criticality_ignore;
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pdu.choice.initiatingMessage.value.present = S1AP_InitiatingMessage__value_PR_UEContextReleaseRequest;
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out = &pdu.choice.initiatingMessage.value.choice.UEContextReleaseRequest;
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/* mandatory */
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ie = (S1AP_UEContextReleaseRequest_IEs_t *)calloc(1, sizeof(S1AP_UEContextReleaseRequest_IEs_t));
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ie->id = S1AP_ProtocolIE_ID_id_MME_UE_S1AP_ID;
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ie->criticality = S1AP_Criticality_reject;
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ie->value.present = S1AP_UEContextReleaseRequest_IEs__value_PR_MME_UE_S1AP_ID;
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ie->value.choice.MME_UE_S1AP_ID = ue_context_p->mme_ue_s1ap_id;
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asn1cSeqAdd(&out->protocolIEs.list, ie);
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/* mandatory */
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ie = (S1AP_UEContextReleaseRequest_IEs_t *)calloc(1, sizeof(S1AP_UEContextReleaseRequest_IEs_t));
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ie->id = S1AP_ProtocolIE_ID_id_eNB_UE_S1AP_ID;
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ie->criticality = S1AP_Criticality_reject;
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ie->value.present = S1AP_UEContextReleaseRequest_IEs__value_PR_ENB_UE_S1AP_ID;
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ie->value.choice.ENB_UE_S1AP_ID = ue_release_req_p->eNB_ue_s1ap_id;
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asn1cSeqAdd(&out->protocolIEs.list, ie);
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/* mandatory */
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ie = (S1AP_UEContextReleaseRequest_IEs_t *)calloc(1, sizeof(S1AP_UEContextReleaseRequest_IEs_t));
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ie->id = S1AP_ProtocolIE_ID_id_Cause;
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ie->criticality = S1AP_Criticality_ignore;
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ie->value.present = S1AP_UEContextReleaseRequest_IEs__value_PR_Cause;
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switch (ue_release_req_p->cause) {
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case S1AP_Cause_PR_radioNetwork:
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ie->value.choice.Cause.present = S1AP_Cause_PR_radioNetwork;
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ie->value.choice.Cause.choice.radioNetwork = ue_release_req_p->cause_value;
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break;
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case S1AP_Cause_PR_transport:
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ie->value.choice.Cause.present = S1AP_Cause_PR_transport;
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ie->value.choice.Cause.choice.transport = ue_release_req_p->cause_value;
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break;
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case S1AP_Cause_PR_nas:
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ie->value.choice.Cause.present = S1AP_Cause_PR_nas;
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ie->value.choice.Cause.choice.nas = ue_release_req_p->cause_value;
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break;
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case S1AP_Cause_PR_protocol:
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ie->value.choice.Cause.present = S1AP_Cause_PR_protocol;
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ie->value.choice.Cause.choice.protocol = ue_release_req_p->cause_value;
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break;
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case S1AP_Cause_PR_misc:
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ie->value.choice.Cause.present = S1AP_Cause_PR_misc;
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ie->value.choice.Cause.choice.misc = ue_release_req_p->cause_value;
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break;
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case S1AP_Cause_PR_NOTHING:
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default:
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ie->value.choice.Cause.present = S1AP_Cause_PR_NOTHING;
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break;
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}
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asn1cSeqAdd(&out->protocolIEs.list, ie);
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if (s1ap_eNB_encode_pdu(&pdu, &buffer, &length) < 0) {
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/* Encode procedure has failed... */
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S1AP_ERROR("Failed to encode UE context release complete\n");
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return -1;
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}
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/* UE associated signalling -> use the allocated stream */
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s1ap_eNB_itti_send_sctp_data_req(s1ap_eNB_instance_p->instance,
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ue_context_p->mme_ref->assoc_id, buffer,
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length, ue_context_p->tx_stream);
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return 0;
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}
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