Guido Casati
2ed28c84b3
TS 38.413 8.2.3 PDU Session Modify:
> For each PDU session which failed to be modified, the PDU Session Resource Modify
> Unsuccessful Transfer IE shall be included containing the failure cause
> If the NG-RAN node receives a PDU SESSION RESOURCE MODIFY REQUEST message containing
> some PDU Session ID IEs (in the PDU Session Resource Modify Request List IE) that the
> NG-RAN node does not recognize, the NG-RAN node shall report the corresponding invalid
> PDU sessions as failed in the PDU SESSION RESOURCE MODIFY RESPONSE message
> with an appropriate cause value
Changes in the commit:
* add rrc_gNB_ngap_pdusession_mod_failure helper function to handle
abnormal conditions and send NGAP response with (all) failed PDU sessions
* improve error handling: send NGAP response instead of silently returning -1
when UE context lookup fails (unknown RAN UE NGAP ID)
* add AMF UE NGAP ID validation: check stored AMF UE NGAP ID matches request
and send failure response if mismatch (per 3GPP TS 38.413)
* handle unrecognized PDU Session IDs per 3GPP TS 38.413 8.2.3.4: add to
failed list to be sent in the reponse message
* simplify failure path: reuse rrc_gNB_send_NGAP_PDUSESSION_MODIFY_RESP
instead of manually constructing response message
* remove failed PDU sessions from RRC list in rrc_gNB_send_NGAP_PDUSESSION_MODIFY_RESP
* remove redundant code and improve code organization
* add bounds checking
* improve function signature
116 lines
5.3 KiB
C
116 lines
5.3 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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/*! \file rrc_gNB_NGAP.h
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* \brief rrc NGAP procedures for gNB
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* \author Yoshio INOUE, Masayuki HARADA
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* \date 2020
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* \version 0.1
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* \email: yoshio.inoue@fujitsu.com,masayuki.harada@fujitsu.com
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* (yoshio.inoue%40fujitsu.com%2cmasayuki.harada%40fujitsu.com)
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*/
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#ifndef RRC_GNB_NGAP_H_
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#define RRC_GNB_NGAP_H_
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#include <assertions.h>
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#include <stdint.h>
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#include "NR_RRCSetupComplete-IEs.h"
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#include "NR_UECapabilityInformation.h"
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#include "NR_UL-DCCH-Message.h"
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#include "intertask_interface.h"
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#include "ngap_messages_types.h"
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#include "nr_rrc_defs.h"
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extern mui_t rrc_gNB_mui;
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void rrc_gNB_send_NGAP_NAS_FIRST_REQ(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE, NR_RRCSetupComplete_IEs_t *rrcSetupComplete);
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int rrc_gNB_process_NGAP_INITIAL_CONTEXT_SETUP_REQ(MessageDef *msg_p, instance_t instance);
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void rrc_gNB_send_NGAP_INITIAL_CONTEXT_SETUP_RESP(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE);
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void rrc_gNB_send_NGAP_INITIAL_CONTEXT_SETUP_FAIL(uint32_t gnb,
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const rrc_gNB_ue_context_t *const ue_context_pP,
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const ngap_cause_t causeP);
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int rrc_gNB_process_NGAP_DOWNLINK_NAS(MessageDef *msg_p, instance_t instance, mui_t *rrc_gNB_mui);
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void rrc_gNB_send_NGAP_UPLINK_NAS(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE, const NR_UL_DCCH_Message_t *const ul_dcch_msg);
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void rrc_gNB_send_NGAP_PDUSESSION_SETUP_RESP(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE, uint8_t xid);
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void rrc_gNB_process_NGAP_PDUSESSION_SETUP_REQ(MessageDef *msg_p, instance_t instance);
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int rrc_gNB_process_NGAP_PDUSESSION_MODIFY_REQ(const ngap_pdusession_modify_req_t *req, instance_t instance);
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int rrc_gNB_send_NGAP_PDUSESSION_MODIFY_RESP(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE, uint8_t xid);
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void rrc_gNB_modify_dedicatedRRCReconfiguration(gNB_RRC_INST *rrc, gNB_RRC_UE_t *ue_p);
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void rrc_gNB_send_NGAP_UE_CONTEXT_RELEASE_REQ(const module_id_t gnb_mod_idP,
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const rrc_gNB_ue_context_t *const ue_context_pP,
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const ngap_cause_t causeP);
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int rrc_gNB_process_NGAP_UE_CONTEXT_RELEASE_REQ(MessageDef *msg_p, instance_t instance);
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int rrc_gNB_process_NGAP_UE_CONTEXT_RELEASE_COMMAND(MessageDef *msg_p, instance_t instance);
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void rrc_gNB_send_NGAP_UE_CONTEXT_RELEASE_COMPLETE(instance_t instance, uint32_t gNB_ue_ngap_id, seq_arr_t *pduSessions);
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void rrc_gNB_send_NGAP_UE_CAPABILITIES_IND(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE, const NR_UECapabilityInformation_t *const ue_cap_info);
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int rrc_gNB_process_NGAP_PDUSESSION_RELEASE_COMMAND(ngap_pdusession_release_command_t *cmd, gNB_RRC_INST *rrc);
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void rrc_gNB_send_NGAP_PDUSESSION_RELEASE_RESPONSE(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE, uint8_t xid);
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void nr_rrc_pdcp_config_security(gNB_RRC_UE_t *UE, bool enable_ciphering);
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int rrc_gNB_process_PAGING_IND(MessageDef *msg_p, instance_t instance);
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void rrc_gNB_send_NGAP_HANDOVER_REQUIRED(gNB_RRC_INST *rrc,
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gNB_RRC_UE_t *UE,
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const nr_neighbour_cell_t *neighbourCellConfiguration,
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const byte_array_t hoPrepInfo);
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void rrc_gNB_send_NGAP_HANDOVER_FAILURE(gNB_RRC_INST *rrc, ngap_handover_failure_t *msg);
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int rrc_gNB_process_Handover_Request(gNB_RRC_INST *rrc, instance_t instance, ngap_handover_request_t *msg);
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void rrc_gNB_free_Handover_Request(ngap_handover_request_t *msg);
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void rrc_gNB_send_NGAP_HANDOVER_REQUEST_ACKNOWLEDGE(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE, byte_array_t ho_command);
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void rrc_gNB_process_HandoverCommand(gNB_RRC_INST *rrc, const ngap_handover_command_t *msg);
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void rrc_gNB_free_Handover_Command(ngap_handover_command_t *msg);
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void rrc_gNB_send_NGAP_HANDOVER_NOTIFY(gNB_RRC_INST *rrc, gNB_RRC_UE_t *UE);
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void rrc_gNB_send_NGAP_HANDOVER_CANCEL(int module_id, gNB_RRC_UE_t *UE, ngap_cause_t cause);
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int rrc_gNB_send_NGAP_ul_ran_status_transfer(gNB_RRC_INST *rrc,
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gNB_RRC_UE_t *UE,
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const int n_to_mod,
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const int *drb_ids,
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const e1_pdcp_status_info_t *pdcp_status);
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int rrc_gNB_process_NGAP_DL_RAN_STATUS_TRANSFER(MessageDef *msg_p, instance_t instance);
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#endif
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