104 lines
3.4 KiB
C
104 lines
3.4 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 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 ngap_gNB_ue_context.h
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* \brief ngap UE context management within 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 (yoshio.inoue%40fujitsu.com%2cmasayuki.harada%40fujitsu.com)
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*/
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#include "tree.h"
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#include "queue.h"
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#include "ngap_gNB_defs.h"
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#ifndef NGAP_GNB_UE_CONTEXT_H_
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#define NGAP_GNB_UE_CONTEXT_H_
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// Forward declarations
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struct ngap_gNB_amf_data_s;
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struct ngap_ue_map;
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struct gNB_amf_desc_s;
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typedef enum {
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/* UE has not been registered to a AMF or UE association has failed. */
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NGAP_UE_DECONNECTED = 0x0,
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/* UE ngap state is waiting for initial context setup request message. */
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NGAP_UE_WAITING_CSR = 0x1,
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/* UE association is ready and bearers are established. */
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NGAP_UE_CONNECTED = 0x2,
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NGAP_UE_STATE_MAX,
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} ngap_ue_state;
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typedef struct ngap_gNB_ue_context_s {
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/* Tree related data */
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RB_ENTRY(ngap_gNB_ue_context_s) entries;
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/* Uniquely identifies the UE between AMF and gNB within the gNB.
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* This id is encoded on 32bits.
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*/
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uint32_t gNB_ue_ngap_id;
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/* UE id for initial connection to NGAP */
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uint16_t ue_initial_id;
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/* Uniquely identifies the UE within AMF. Encoded on 32 bits. */
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uint64_t amf_ue_ngap_id:40;
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/* Stream used for this particular UE */
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int32_t tx_stream;
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int32_t rx_stream;
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/* Current UE state. */
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ngap_ue_state ue_state;
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/* Reference to AMF data this UE is attached to */
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struct ngap_gNB_amf_data_s *amf_ref;
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/* Signaled by the UE in RRC Connection Setup Complete and used in NAS Uplink
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* to route NAS messages correctly. 0-based, not 1-based as in TS 36.331
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* 6.2.2 RRC Connection Setup Complete! */
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int selected_plmn_identity;
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/* Reference to gNB data this UE is attached to */
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ngap_gNB_instance_t *gNB_instance;
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} ngap_gNB_ue_context_t;
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int ngap_gNB_compare_gNB_ue_ngap_id(
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struct ngap_gNB_ue_context_s *p1, struct ngap_gNB_ue_context_s *p2);
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/* Generate the tree management functions prototypes */
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RB_PROTOTYPE(ngap_ue_map, ngap_gNB_ue_context_s, entries,
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ngap_gNB_compare_gNB_ue_ngap_id);
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struct ngap_gNB_ue_context_s *ngap_gNB_allocate_new_UE_context(void);
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struct ngap_gNB_ue_context_s *ngap_gNB_get_ue_context(
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ngap_gNB_instance_t *instance_p,
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uint32_t gNB_ue_ngap_id);
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void ngap_gNB_free_ue_context(struct ngap_gNB_ue_context_s *ue_context_p);
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#endif /* NGAP_GNB_UE_CONTEXT_H_ */
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