728 lines
25 KiB
C
728 lines
25 KiB
C
/*
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* Copyright (C) 2019,2020 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "ngap-handler.h"
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#include "sbi-path.h"
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#include "pfcp-path.h"
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#include "ngap-path.h"
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int ngap_handle_pdu_session_resource_setup_response_transfer(
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smf_sess_t *sess, ogs_sbi_stream_t *stream, ogs_pkbuf_t *pkbuf)
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{
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smf_ue_t *smf_ue = NULL;
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int rv, i;
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uint32_t gnb_n3_teid;
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ogs_ip_t gnb_n3_ip;
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bool far_update = false;
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NGAP_PDUSessionResourceSetupResponseTransfer_t message;
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NGAP_QosFlowPerTNLInformation_t *dLQosFlowPerTNLInformation = NULL;
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NGAP_UPTransportLayerInformation_t *uPTransportLayerInformation = NULL;
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NGAP_GTPTunnel_t *gTPTunnel = NULL;
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NGAP_AssociatedQosFlowList_t *associatedQosFlowList = NULL;
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ogs_assert(pkbuf);
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ogs_assert(stream);
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ogs_assert(sess);
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smf_ue = sess->smf_ue;
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ogs_assert(smf_ue);
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ogs_debug("PDUSessionResourceSetupResponseTransfer");
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rv = ogs_asn_decode(
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&asn_DEF_NGAP_PDUSessionResourceSetupResponseTransfer,
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&message, sizeof(message), pkbuf);
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if (rv != OGS_OK) {
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ogs_error("[%s:%d] Cannot decode NGAP message",
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smf_ue->supi, sess->psi);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"No N2 SM Info Type", smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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rv = OGS_ERROR;
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dLQosFlowPerTNLInformation = &message.dLQosFlowPerTNLInformation;
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uPTransportLayerInformation =
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&dLQosFlowPerTNLInformation->uPTransportLayerInformation;
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if (uPTransportLayerInformation->present !=
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NGAP_UPTransportLayerInformation_PR_gTPTunnel) {
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ogs_error(
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"[%s:%d] Unknown NGAP_UPTransportLayerInformation.present [%d]",
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smf_ue->supi, sess->psi,
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uPTransportLayerInformation->present);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"Unknown NGAP_UPTransportLayerInformation.present",
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smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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gTPTunnel = uPTransportLayerInformation->choice.gTPTunnel;
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if (!gTPTunnel) {
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ogs_error("[%s:%d] No GTPTunnel", smf_ue->supi, sess->psi);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"No GTPTunnel", smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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rv = ogs_asn_BIT_STRING_to_ip(
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&gTPTunnel->transportLayerAddress, &gnb_n3_ip);
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if (rv != OGS_OK) {
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ogs_error("[%s:%d] No transportLayerAddress", smf_ue->supi, sess->psi);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"No transportLayerAddress", smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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ogs_asn_OCTET_STRING_to_uint32(&gTPTunnel->gTP_TEID, &gnb_n3_teid);
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/* Need to Update? */
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if (memcmp(&sess->gnb_n3_ip, &gnb_n3_ip, sizeof(sess->gnb_n3_ip)) != 0 ||
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sess->gnb_n3_teid != gnb_n3_teid)
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far_update = true;
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/* Setup FAR */
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memcpy(&sess->gnb_n3_ip, &gnb_n3_ip, sizeof(sess->gnb_n3_ip));
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sess->gnb_n3_teid = gnb_n3_teid;
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associatedQosFlowList = &dLQosFlowPerTNLInformation->associatedQosFlowList;
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for (i = 0; i < associatedQosFlowList->list.count; i++) {
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NGAP_AssociatedQosFlowItem_t *associatedQosFlowItem = NULL;
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associatedQosFlowItem = (NGAP_AssociatedQosFlowItem_t *)
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associatedQosFlowList->list.array[i];
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if (associatedQosFlowItem) {
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smf_bearer_t *qos_flow = smf_qos_flow_find_by_qfi(
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sess, associatedQosFlowItem->qosFlowIdentifier);
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if (qos_flow) {
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ogs_pfcp_far_t *dl_far = qos_flow->dl_far;
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ogs_assert(dl_far);
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if (dl_far->apply_action != OGS_PFCP_APPLY_ACTION_FORW) {
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far_update = true;
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}
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dl_far->apply_action = OGS_PFCP_APPLY_ACTION_FORW;
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ogs_assert(OGS_OK ==
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ogs_pfcp_ip_to_outer_header_creation(
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&sess->gnb_n3_ip,
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&dl_far->outer_header_creation,
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&dl_far->outer_header_creation_len));
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dl_far->outer_header_creation.teid = sess->gnb_n3_teid;
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} else {
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ogs_error("[%s:%d] No QoS flow", smf_ue->supi, sess->psi);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"No QoS flow", smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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}
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}
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if (far_update) {
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ogs_assert(OGS_OK ==
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smf_5gc_pfcp_send_all_pdr_modification_request(
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sess, stream, OGS_PFCP_MODIFY_DL_ONLY|OGS_PFCP_MODIFY_ACTIVATE,
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0));
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} else {
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/* ACTIVATED Is NOT Included in RESPONSE */
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ogs_assert(true == ogs_sbi_send_http_status_no_content(stream));
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}
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rv = OGS_OK;
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cleanup:
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ogs_asn_free(
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&asn_DEF_NGAP_PDUSessionResourceSetupResponseTransfer, &message);
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return rv;
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}
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int ngap_handle_pdu_session_resource_setup_unsuccessful_transfer(
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smf_sess_t *sess, ogs_sbi_stream_t *stream, ogs_pkbuf_t *pkbuf)
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{
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smf_ue_t *smf_ue = NULL;
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int rv;
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NGAP_PDUSessionResourceSetupUnsuccessfulTransfer_t message;
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NGAP_Cause_t *Cause = NULL;
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ogs_assert(pkbuf);
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ogs_assert(stream);
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ogs_assert(sess);
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smf_ue = sess->smf_ue;
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ogs_assert(smf_ue);
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ogs_debug("PDUSessionResourceSetupUnsuccessfulTransfer");
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rv = ogs_asn_decode(
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&asn_DEF_NGAP_PDUSessionResourceSetupUnsuccessfulTransfer,
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&message, sizeof(message), pkbuf);
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if (rv != OGS_OK) {
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ogs_error("[%s:%d] Cannot decode NGAP message",
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smf_ue->supi, sess->psi);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"No N2 SM Info Type", smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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rv = OGS_ERROR;
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Cause = &message.cause;
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if (Cause->present == NGAP_Cause_PR_radioNetwork &&
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Cause->choice.radioNetwork ==
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NGAP_CauseRadioNetwork_multiple_PDU_session_ID_instances) {
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ogs_warn(" Cause[Group:%d Cause:%d]",
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Cause->present, (int)Cause->choice.radioNetwork);
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} else {
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ogs_error(" Cause[Group:%d Cause:%d]",
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Cause->present, (int)Cause->choice.radioNetwork);
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}
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/*
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* TS23.502
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* 4.2.3 Service Request procedures
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* 4.2.3.2 UE Triggered Service Request
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*
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* 15. ...
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* If a PDU Session is rejected by the serving NG-RAN
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* with an indication that the PDU Session was rejected
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* because User Plane Security Enforcement is not supported
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* in the serving NG-RAN and the User Plane Enforcement Policy
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* indicates "Required" as described in clause 5.10.3
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* of TS 23.501 [2], the SMF shall trigger the release
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* of this PDU Session.
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*
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* In all other cases of PDU Session rejection,
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* the SMF can decide whether to release the PDU Session
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* or to deactivate the UP connection of this PDU Session.
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*
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*
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* TS29.502
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*
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* 5.2.2.3.2
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* Activation and Deactivation of the User Plane connection
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* of a PDU session
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* 5.2.2.3.2.2
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* Activation of User Plane connectivity of a PDU session
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*
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* 3. ...
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* N2 SM information received from the 5G-AN
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* (see PDU Session Resource Setup Unsuccessful Transfer IE
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* in clause 9.3.4.16 of 3GPP TS 38.413 [9]),
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* including the Cause of the failure, if resources failed
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* to be established for the PDU session.
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*
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* Upon receipt of this request, the SMF shall:
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* - consider that the activation of the User Plane connection
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* has failed and set the upCnxState attribute to DEACTIVATED"
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* otherwise.
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*/
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ogs_assert(OGS_OK ==
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smf_5gc_pfcp_send_all_pdr_modification_request(
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sess, stream,
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OGS_PFCP_MODIFY_DL_ONLY|OGS_PFCP_MODIFY_DEACTIVATE, 0));
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rv = OGS_OK;
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cleanup:
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ogs_asn_free(
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&asn_DEF_NGAP_PDUSessionResourceSetupUnsuccessfulTransfer, &message);
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return rv;
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}
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int ngap_handle_pdu_session_resource_modify_response_transfer(
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smf_sess_t *sess, ogs_sbi_stream_t *stream, ogs_pkbuf_t *pkbuf)
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{
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smf_ue_t *smf_ue = NULL;
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smf_bearer_t *qos_flow = NULL;
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int rv, i;
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ogs_pfcp_far_t *dl_far = NULL;
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NGAP_PDUSessionResourceModifyResponseTransfer_t message;
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NGAP_QosFlowAddOrModifyResponseList_t *qosFlowAddOrModifyResponseList;
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ogs_assert(pkbuf);
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ogs_assert(stream);
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ogs_assert(sess);
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smf_ue = sess->smf_ue;
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ogs_assert(smf_ue);
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ogs_debug("PDUSessionResourceModifyResponseTransfer");
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rv = ogs_asn_decode(
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&asn_DEF_NGAP_PDUSessionResourceModifyResponseTransfer,
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&message, sizeof(message), pkbuf);
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if (rv != OGS_OK) {
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ogs_error("[%s:%d] Cannot decode NGAP message",
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smf_ue->supi, sess->psi);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"No N2 SM Info Type", smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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rv = OGS_ERROR;
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qosFlowAddOrModifyResponseList = message.qosFlowAddOrModifyResponseList;
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if (!qosFlowAddOrModifyResponseList) {
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/* QosFlow Release */
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rv = OGS_OK;
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ogs_assert(true == ogs_sbi_send_http_status_no_content(stream));
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goto cleanup;
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}
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ogs_list_init(&sess->qos_flow_to_modify_list);
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if (qosFlowAddOrModifyResponseList) {
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for (i = 0; i < qosFlowAddOrModifyResponseList->list.count; i++) {
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NGAP_QosFlowAddOrModifyResponseItem_t
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*qosFlowAddOrModifyResponseItem = NULL;
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qosFlowAddOrModifyResponseItem =
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(NGAP_QosFlowAddOrModifyResponseItem_t *)
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qosFlowAddOrModifyResponseList->list.array[i];
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if (qosFlowAddOrModifyResponseItem) {
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qos_flow = smf_qos_flow_find_by_qfi(sess,
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qosFlowAddOrModifyResponseItem->qosFlowIdentifier);
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if (qos_flow) {
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dl_far = qos_flow->dl_far;
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ogs_assert(dl_far);
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dl_far->apply_action = OGS_PFCP_APPLY_ACTION_FORW;
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ogs_assert(OGS_OK ==
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ogs_pfcp_ip_to_outer_header_creation(
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&sess->gnb_n3_ip,
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&dl_far->outer_header_creation,
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&dl_far->outer_header_creation_len));
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dl_far->outer_header_creation.teid = sess->gnb_n3_teid;
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ogs_list_add(&sess->qos_flow_to_modify_list,
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&qos_flow->to_modify_node);
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}
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}
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}
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}
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if (ogs_list_count(&sess->qos_flow_to_modify_list) == 0) {
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ogs_error("[%s:%d] No QoS flow", smf_ue->supi, sess->psi);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"No QoS flow", smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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ogs_assert(OGS_OK ==
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smf_5gc_pfcp_send_qos_flow_list_modification_request(
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sess, stream,
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OGS_PFCP_MODIFY_DL_ONLY|OGS_PFCP_MODIFY_ACTIVATE, 0));
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rv = OGS_OK;
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cleanup:
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ogs_asn_free(
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&asn_DEF_NGAP_PDUSessionResourceModifyResponseTransfer, &message);
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return rv;
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}
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int ngap_handle_path_switch_request_transfer(
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smf_sess_t *sess, ogs_sbi_stream_t *stream, ogs_pkbuf_t *pkbuf)
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{
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smf_ue_t *smf_ue = NULL;
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int rv, i;
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uint32_t gnb_n3_teid;
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ogs_ip_t gnb_n3_ip;
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bool far_update = false;
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NGAP_PathSwitchRequestTransfer_t message;
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NGAP_UPTransportLayerInformation_t *dL_NGU_UP_TNLInformation = NULL;
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NGAP_QosFlowAcceptedItem_t *acceptedQosFlowItem = NULL;
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NGAP_GTPTunnel_t *gTPTunnel = NULL;
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NGAP_QosFlowAcceptedList_t *qosFlowAcceptedList = NULL;
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ogs_assert(pkbuf);
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ogs_assert(stream);
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ogs_assert(sess);
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smf_ue = sess->smf_ue;
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ogs_assert(smf_ue);
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ogs_debug("PathSwitchRequestTransfer");
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rv = ogs_asn_decode(&asn_DEF_NGAP_PathSwitchRequestTransfer,
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&message, sizeof(message), pkbuf);
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if (rv != OGS_OK) {
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ogs_error("[%s:%d] Cannot decode NGAP message",
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smf_ue->supi, sess->psi);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"No N2 SM Info Type", smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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rv = OGS_ERROR;
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dL_NGU_UP_TNLInformation = &message.dL_NGU_UP_TNLInformation;
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if (dL_NGU_UP_TNLInformation->present !=
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NGAP_UPTransportLayerInformation_PR_gTPTunnel) {
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ogs_error(
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"[%s:%d] Unknown dL_NGU_UP_TNLInformation->present [%d]",
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smf_ue->supi, sess->psi, dL_NGU_UP_TNLInformation->present);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"Unknown dL_NGU_UP_TNLInformation->present",
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smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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gTPTunnel = dL_NGU_UP_TNLInformation->choice.gTPTunnel;
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if (!gTPTunnel) {
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ogs_error("[%s:%d] No GTPTunnel", smf_ue->supi, sess->psi);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"No GTPTunnel", smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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rv = ogs_asn_BIT_STRING_to_ip(
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&gTPTunnel->transportLayerAddress, &gnb_n3_ip);
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if (rv != OGS_OK) {
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ogs_error("[%s:%d] No transportLayerAddress", smf_ue->supi, sess->psi);
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smf_sbi_send_sm_context_update_error(stream,
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OGS_SBI_HTTP_STATUS_BAD_REQUEST,
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"No transportLayerAddress", smf_ue->supi, NULL, NULL);
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goto cleanup;
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}
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ogs_asn_OCTET_STRING_to_uint32(&gTPTunnel->gTP_TEID, &gnb_n3_teid);
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/* Need to Update? */
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if (memcmp(&sess->gnb_n3_ip, &gnb_n3_ip, sizeof(sess->gnb_n3_ip)) != 0 ||
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sess->gnb_n3_teid != gnb_n3_teid)
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far_update = true;
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/* Setup FAR */
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memcpy(&sess->gnb_n3_ip, &gnb_n3_ip, sizeof(sess->gnb_n3_ip));
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sess->gnb_n3_teid = gnb_n3_teid;
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qosFlowAcceptedList = &message.qosFlowAcceptedList;
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for (i = 0; i < qosFlowAcceptedList->list.count; i++) {
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acceptedQosFlowItem = (NGAP_QosFlowAcceptedItem_t *)
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qosFlowAcceptedList->list.array[i];
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if (acceptedQosFlowItem) {
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smf_bearer_t *qos_flow = smf_qos_flow_find_by_qfi(
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sess, acceptedQosFlowItem->qosFlowIdentifier);
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if (qos_flow) {
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ogs_pfcp_far_t *dl_far = qos_flow->dl_far;
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ogs_assert(dl_far);
|
|
if (dl_far->apply_action != OGS_PFCP_APPLY_ACTION_FORW) {
|
|
far_update = true;
|
|
}
|
|
|
|
dl_far->apply_action = OGS_PFCP_APPLY_ACTION_FORW;
|
|
ogs_assert(OGS_OK ==
|
|
ogs_pfcp_ip_to_outer_header_creation(
|
|
&sess->gnb_n3_ip,
|
|
&dl_far->outer_header_creation,
|
|
&dl_far->outer_header_creation_len));
|
|
dl_far->outer_header_creation.teid = sess->gnb_n3_teid;
|
|
} else {
|
|
ogs_error("[%s:%d] No QoS flow", smf_ue->supi, sess->psi);
|
|
smf_sbi_send_sm_context_update_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
"No QoS flow", smf_ue->supi, NULL, NULL);
|
|
goto cleanup;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (far_update) {
|
|
ogs_assert(OGS_OK ==
|
|
smf_5gc_pfcp_send_all_pdr_modification_request(
|
|
sess, stream,
|
|
OGS_PFCP_MODIFY_DL_ONLY|OGS_PFCP_MODIFY_ACTIVATE|
|
|
OGS_PFCP_MODIFY_XN_HANDOVER|OGS_PFCP_MODIFY_END_MARKER,
|
|
0));
|
|
} else {
|
|
/* ACTIVATED Is NOT Included in RESPONSE */
|
|
ogs_assert(true == ogs_sbi_send_http_status_no_content(stream));
|
|
}
|
|
|
|
rv = OGS_OK;
|
|
|
|
cleanup:
|
|
ogs_asn_free(&asn_DEF_NGAP_PathSwitchRequestTransfer, &message);
|
|
return rv;
|
|
}
|
|
|
|
int ngap_handle_handover_required_transfer(
|
|
smf_sess_t *sess, ogs_sbi_stream_t *stream, ogs_pkbuf_t *pkbuf)
|
|
{
|
|
smf_ue_t *smf_ue = NULL;
|
|
int rv;
|
|
|
|
NGAP_HandoverRequiredTransfer_t message;
|
|
|
|
NGAP_DirectForwardingPathAvailability_t
|
|
*directForwardingPathAvailability = NULL;
|
|
|
|
ogs_pkbuf_t *n2smbuf = NULL;
|
|
|
|
ogs_assert(pkbuf);
|
|
ogs_assert(stream);
|
|
|
|
ogs_assert(sess);
|
|
smf_ue = sess->smf_ue;
|
|
ogs_assert(smf_ue);
|
|
|
|
ogs_debug("HandoverRequiredTransfer");
|
|
|
|
rv = ogs_asn_decode(&asn_DEF_NGAP_HandoverRequiredTransfer,
|
|
&message, sizeof(message), pkbuf);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("[%s:%d] Cannot decode NGAP message",
|
|
smf_ue->supi, sess->psi);
|
|
smf_sbi_send_sm_context_update_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
"No N2 SM Info Type", smf_ue->supi, NULL, NULL);
|
|
goto cleanup;
|
|
}
|
|
|
|
directForwardingPathAvailability = message.directForwardingPathAvailability;
|
|
if (!directForwardingPathAvailability)
|
|
sess->handover.data_forwarding_not_possible = true;
|
|
|
|
n2smbuf = ngap_build_pdu_session_resource_setup_request_transfer(sess);
|
|
ogs_assert(n2smbuf);
|
|
|
|
smf_sbi_send_sm_context_updated_data(
|
|
sess, stream, 0, OpenAPI_ho_state_PREPARING,
|
|
NULL, OpenAPI_n2_sm_info_type_PDU_RES_SETUP_REQ, n2smbuf);
|
|
|
|
rv = OGS_OK;
|
|
|
|
cleanup:
|
|
ogs_asn_free(&asn_DEF_NGAP_HandoverRequiredTransfer, &message);
|
|
return rv;
|
|
}
|
|
|
|
int ngap_handle_handover_request_ack(
|
|
smf_sess_t *sess, ogs_sbi_stream_t *stream, ogs_pkbuf_t *pkbuf)
|
|
{
|
|
smf_ue_t *smf_ue = NULL;
|
|
int rv, i;
|
|
|
|
NGAP_HandoverRequestAcknowledgeTransfer_t message;
|
|
|
|
NGAP_UPTransportLayerInformation_t *dL_NGU_UP_TNLInformation = NULL;
|
|
NGAP_UPTransportLayerInformation_t *dLForwardingUP_TNLInformation = NULL;
|
|
NGAP_QosFlowListWithDataForwarding_t *qosFlowSetupResponseList = NULL;
|
|
NGAP_QosFlowItemWithDataForwarding_t *qosFlowSetupResponseItem = NULL;
|
|
NGAP_GTPTunnel_t *gTPTunnel = NULL;
|
|
|
|
ogs_assert(pkbuf);
|
|
ogs_assert(stream);
|
|
|
|
ogs_assert(sess);
|
|
smf_ue = sess->smf_ue;
|
|
ogs_assert(smf_ue);
|
|
|
|
ogs_debug("HandoverRequestAcknowledgeTransfer");
|
|
|
|
rv = ogs_asn_decode(&asn_DEF_NGAP_HandoverRequestAcknowledgeTransfer,
|
|
&message, sizeof(message), pkbuf);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("[%s:%d] Cannot decode NGAP message",
|
|
smf_ue->supi, sess->psi);
|
|
smf_sbi_send_sm_context_update_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
"No N2 SM Info Type", smf_ue->supi, NULL, NULL);
|
|
goto cleanup;
|
|
}
|
|
|
|
rv = OGS_ERROR;
|
|
|
|
dL_NGU_UP_TNLInformation = &message.dL_NGU_UP_TNLInformation;
|
|
if (dL_NGU_UP_TNLInformation->present !=
|
|
NGAP_UPTransportLayerInformation_PR_gTPTunnel) {
|
|
ogs_error(
|
|
"[%s:%d] Unknown dL_NGU_UP_TNLInformation->present [%d]",
|
|
smf_ue->supi, sess->psi, dL_NGU_UP_TNLInformation->present);
|
|
smf_sbi_send_sm_context_update_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
"Unknown dL_NGU_UP_TNLInformation->present",
|
|
smf_ue->supi, NULL, NULL);
|
|
goto cleanup;
|
|
}
|
|
|
|
gTPTunnel = dL_NGU_UP_TNLInformation->choice.gTPTunnel;
|
|
if (!gTPTunnel) {
|
|
ogs_error("[%s:%d] No GTPTunnel", smf_ue->supi, sess->psi);
|
|
smf_sbi_send_sm_context_update_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
"No GTPTunnel", smf_ue->supi, NULL, NULL);
|
|
goto cleanup;
|
|
}
|
|
|
|
rv = ogs_asn_BIT_STRING_to_ip(&gTPTunnel->transportLayerAddress,
|
|
&sess->handover.gnb_n3_ip);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("[%s:%d] No transportLayerAddress", smf_ue->supi, sess->psi);
|
|
smf_sbi_send_sm_context_update_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
"No transportLayerAddress", smf_ue->supi, NULL, NULL);
|
|
goto cleanup;
|
|
}
|
|
ogs_asn_OCTET_STRING_to_uint32(&gTPTunnel->gTP_TEID,
|
|
&sess->handover.gnb_n3_teid);
|
|
|
|
qosFlowSetupResponseList = &message.qosFlowSetupResponseList;
|
|
for (i = 0; i < qosFlowSetupResponseList->list.count; i++) {
|
|
qosFlowSetupResponseItem = (NGAP_QosFlowItemWithDataForwarding_t *)
|
|
qosFlowSetupResponseList->list.array[i];
|
|
if (qosFlowSetupResponseItem) {
|
|
smf_bearer_t *qos_flow = smf_qos_flow_find_by_qfi(
|
|
sess, qosFlowSetupResponseItem->qosFlowIdentifier);
|
|
|
|
if (qos_flow) {
|
|
ogs_pfcp_far_t *dl_far = qos_flow->dl_far;
|
|
ogs_assert(dl_far);
|
|
|
|
dl_far->handover.prepared = true;
|
|
|
|
} else {
|
|
ogs_error("[%s:%d] No QoS flow", smf_ue->supi, sess->psi);
|
|
smf_sbi_send_sm_context_update_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
"No QoS flow", smf_ue->supi, NULL, NULL);
|
|
goto cleanup;
|
|
}
|
|
}
|
|
}
|
|
|
|
dLForwardingUP_TNLInformation = message.dLForwardingUP_TNLInformation;
|
|
if (dLForwardingUP_TNLInformation) {
|
|
if (dLForwardingUP_TNLInformation->present !=
|
|
NGAP_UPTransportLayerInformation_PR_gTPTunnel) {
|
|
ogs_error(
|
|
"[%s:%d] Unknown dLForwardingUP_TNLInformation->present [%d]",
|
|
smf_ue->supi, sess->psi, dL_NGU_UP_TNLInformation->present);
|
|
smf_sbi_send_sm_context_update_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
"Unknown dLForwardingUP_TNLInformation->present",
|
|
smf_ue->supi, NULL, NULL);
|
|
goto cleanup;
|
|
}
|
|
|
|
gTPTunnel = dLForwardingUP_TNLInformation->choice.gTPTunnel;
|
|
if (!gTPTunnel) {
|
|
ogs_error("[%s:%d] No GTPTunnel", smf_ue->supi, sess->psi);
|
|
smf_sbi_send_sm_context_update_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
"No GTPTunnel", smf_ue->supi, NULL, NULL);
|
|
goto cleanup;
|
|
}
|
|
|
|
rv = ogs_asn_BIT_STRING_to_ip(&gTPTunnel->transportLayerAddress,
|
|
&sess->handover.gnb_dl_ip);
|
|
if (rv != OGS_OK) {
|
|
ogs_error("[%s:%d] No transportLayerAddress",
|
|
smf_ue->supi, sess->psi);
|
|
smf_sbi_send_sm_context_update_error(stream,
|
|
OGS_SBI_HTTP_STATUS_BAD_REQUEST,
|
|
"No transportLayerAddress", smf_ue->supi, NULL, NULL);
|
|
goto cleanup;
|
|
}
|
|
ogs_asn_OCTET_STRING_to_uint32(&gTPTunnel->gTP_TEID,
|
|
&sess->handover.gnb_dl_teid);
|
|
|
|
sess->handover.indirect_data_forwarding = true;
|
|
}
|
|
|
|
sess->handover.prepared = true;
|
|
|
|
if (sess->handover.indirect_data_forwarding == true) {
|
|
if (smf_sess_have_indirect_data_forwarding(sess) == true) {
|
|
ogs_error("We found redundant INDIRECT Tunnel");
|
|
ogs_error("It will be automatically removed");
|
|
|
|
ogs_assert(OGS_OK ==
|
|
smf_5gc_pfcp_send_all_pdr_modification_request(
|
|
sess, stream,
|
|
OGS_PFCP_MODIFY_INDIRECT|
|
|
/*
|
|
* Firstly, OGS_PFCP_MODIFY_REMOVE is only appled.
|
|
* And then, after receiving PFCP response message,
|
|
* we can apply OGS_PFCP_MODIFY_CREATE.
|
|
*
|
|
* PFCP build is implemented as below.
|
|
*
|
|
* if OGS_PFCP_MODIFY_REMOVE
|
|
* else if OGS_PFCP_MODIFY_CREATE
|
|
* else if ..
|
|
* ...
|
|
*/
|
|
OGS_PFCP_MODIFY_REMOVE|OGS_PFCP_MODIFY_CREATE,
|
|
0));
|
|
} else {
|
|
|
|
smf_sess_create_indirect_data_forwarding(sess);
|
|
|
|
ogs_assert(OGS_OK ==
|
|
smf_5gc_pfcp_send_all_pdr_modification_request(
|
|
sess, stream,
|
|
OGS_PFCP_MODIFY_INDIRECT|OGS_PFCP_MODIFY_CREATE,
|
|
0));
|
|
}
|
|
} else {
|
|
ogs_pkbuf_t *n2smbuf = ngap_build_handover_command_transfer(sess);
|
|
ogs_assert(n2smbuf);
|
|
|
|
smf_sbi_send_sm_context_updated_data(
|
|
sess, stream, 0, OpenAPI_ho_state_PREPARED,
|
|
NULL, OpenAPI_n2_sm_info_type_HANDOVER_CMD, n2smbuf);
|
|
}
|
|
|
|
rv = OGS_OK;
|
|
|
|
cleanup:
|
|
ogs_asn_free(&asn_DEF_NGAP_HandoverRequestAcknowledgeTransfer, &message);
|
|
return rv;
|
|
}
|