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/*
* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
*
* This file is part of Open5GS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "ngap-build.h"
#include "ngap-handler.h"
#include "ngap-path.h"
void ngap_state_initial(ogs_fsm_t *s, amf_event_t *e)
{
ogs_assert(s);
amf_sm_debug(e);
OGS_FSM_TRAN(s, &ngap_state_operational);
}
void ngap_state_final(ogs_fsm_t *s, amf_event_t *e)
{
ogs_assert(s);
amf_sm_debug(e);
}
void ngap_state_operational(ogs_fsm_t *s, amf_event_t *e)
{
int r;
amf_gnb_t *gnb = NULL;
ogs_pkbuf_t *pkbuf = NULL;
NGAP_NGAP_PDU_t *pdu = NULL;
NGAP_InitiatingMessage_t *initiatingMessage = NULL;
NGAP_SuccessfulOutcome_t *successfulOutcome = NULL;
NGAP_UnsuccessfulOutcome_t *unsuccessfulOutcome = NULL;
ogs_assert(s);
ogs_assert(e);
amf_sm_debug(e);
gnb = amf_gnb_find_by_id(e->gnb_id);
ogs_assert(gnb);
switch (e->h.id) {
case OGS_FSM_ENTRY_SIG:
break;
case OGS_FSM_EXIT_SIG:
break;
case AMF_EVENT_NGAP_MESSAGE:
pdu = e->ngap.message;
ogs_assert(pdu);
if (!gnb->state.ng_setup_success &&
!(pdu->present == NGAP_NGAP_PDU_PR_initiatingMessage &&
pdu->choice.initiatingMessage->procedureCode ==
NGAP_ProcedureCode_id_NGSetup)) {
break;
}
switch (pdu->present) {
case NGAP_NGAP_PDU_PR_initiatingMessage:
initiatingMessage = pdu->choice.initiatingMessage;
ogs_assert(initiatingMessage);
switch (initiatingMessage->procedureCode) {
case NGAP_ProcedureCode_id_NGSetup:
ngap_handle_ng_setup_request(gnb, pdu);
break;
case NGAP_ProcedureCode_id_InitialUEMessage:
ngap_handle_initial_ue_message(gnb, pdu);
break;
case NGAP_ProcedureCode_id_UplinkNASTransport:
ngap_handle_uplink_nas_transport(gnb, pdu);
break;
case NGAP_ProcedureCode_id_UERadioCapabilityInfoIndication:
ngap_handle_ue_radio_capability_info_indication(gnb, pdu);
break;
case NGAP_ProcedureCode_id_UEContextReleaseRequest:
ngap_handle_ue_context_release_request( gnb, pdu);
break;
case NGAP_ProcedureCode_id_PathSwitchRequest:
ngap_handle_path_switch_request(gnb, pdu);
break;
case NGAP_ProcedureCode_id_UplinkRANConfigurationTransfer:
pkbuf = e->pkbuf;
ogs_assert(pkbuf);
ngap_handle_uplink_ran_configuration_transfer(gnb, pdu, pkbuf);
break;
case NGAP_ProcedureCode_id_HandoverPreparation:
ngap_handle_handover_required(gnb, pdu);
break;
case NGAP_ProcedureCode_id_UplinkRANStatusTransfer:
ngap_handle_uplink_ran_status_transfer(gnb, pdu);
break;
case NGAP_ProcedureCode_id_HandoverNotification:
ngap_handle_handover_notification(gnb, pdu);
break;
case NGAP_ProcedureCode_id_HandoverCancel:
ngap_handle_handover_cancel(gnb, pdu);
break;
case NGAP_ProcedureCode_id_RANConfigurationUpdate:
ngap_handle_ran_configuration_update(gnb, pdu);
break;
case NGAP_ProcedureCode_id_NGReset:
ngap_handle_ng_reset(gnb, pdu);
break;
case NGAP_ProcedureCode_id_ErrorIndication:
ngap_handle_error_indication(gnb, pdu);
break;
default:
ogs_error("Not implemented(choice:%d, proc:%d)",
pdu->present, (int)initiatingMessage->procedureCode);
break;
}
break;
case NGAP_NGAP_PDU_PR_successfulOutcome :
successfulOutcome = pdu->choice.successfulOutcome;
ogs_assert(successfulOutcome);
switch (successfulOutcome->procedureCode) {
case NGAP_ProcedureCode_id_InitialContextSetup:
ngap_handle_initial_context_setup_response(gnb, pdu);
break;
case NGAP_ProcedureCode_id_PDUSessionResourceSetup:
ngap_handle_pdu_session_resource_setup_response(gnb, pdu);
break;
case NGAP_ProcedureCode_id_PDUSessionResourceModify:
ngap_handle_pdu_session_resource_modify_response(gnb, pdu);
break;
case NGAP_ProcedureCode_id_PDUSessionResourceRelease:
ngap_handle_pdu_session_resource_release_response(gnb, pdu);
break;
case NGAP_ProcedureCode_id_UEContextModification:
ngap_handle_ue_context_modification_response(gnb, pdu);
break;
case NGAP_ProcedureCode_id_UEContextRelease:
ngap_handle_ue_context_release_complete(gnb, pdu);
break;
case NGAP_ProcedureCode_id_HandoverResourceAllocation:
ngap_handle_handover_request_ack(gnb, pdu);
break;
default:
ogs_error("Not implemented(choice:%d, proc:%d)",
pdu->present, (int)successfulOutcome->procedureCode);
break;
}
break;
case NGAP_NGAP_PDU_PR_unsuccessfulOutcome :
unsuccessfulOutcome = pdu->choice.unsuccessfulOutcome;
ogs_assert(unsuccessfulOutcome);
switch (unsuccessfulOutcome->procedureCode) {
case NGAP_ProcedureCode_id_InitialContextSetup :
ngap_handle_initial_context_setup_failure(gnb, pdu);
break;
case NGAP_ProcedureCode_id_UEContextModification:
ngap_handle_ue_context_modification_failure(gnb, pdu);
break;
case NGAP_ProcedureCode_id_HandoverResourceAllocation :
ngap_handle_handover_failure(gnb, pdu);
break;
default:
ogs_error("Not implemented(choice:%d, proc:%d)",
pdu->present, (int)unsuccessfulOutcome->procedureCode);
break;
}
break;
default:
ogs_error("Not implemented(choice:%d)", pdu->present);
break;
}
break;
case AMF_EVENT_NGAP_TIMER:
switch (e->h.timer_id) {
case AMF_TIMER_NG_DELAYED_SEND:
ogs_assert(e->pkbuf);
r = ngap_send_to_ran_ue(
ran_ue_find_by_id(e->ran_ue_id), e->pkbuf);
ogs_expect(r == OGS_OK);
ogs_assert(r != OGS_ERROR);
ogs_timer_delete(e->timer);
break;
default:
ogs_error("Unknown timer[%s:%d]",
amf_timer_get_name(e->h.timer_id), e->h.timer_id);
break;
}
break;
default:
ogs_error("Unknown event %s", amf_event_get_name(e));
break;
}
}
void ngap_state_exception(ogs_fsm_t *s, amf_event_t *e)
{
ogs_assert(s);
ogs_assert(e);
amf_sm_debug(e);
switch (e->h.id) {
case OGS_FSM_ENTRY_SIG:
break;
case OGS_FSM_EXIT_SIG:
break;
default:
ogs_error("Unknown event %s", amf_event_get_name(e));
break;
}
}
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