Robert Schmidt
febeaa7181
Introduce function cu_update_f1_ue_data() which does remove+add under one lock. This fixes a concurrency bug. For instance, during reestablishment, the CU needs to update the DU UE ID under which the UE is identified in the DU. Previously, the CU would remove, then add the DU UE ID info. At the same time, the PDCP thread might look up the information. This can lead to asserts. Use the above addmod functionality to do the remove-add under a mutex. Modify test to verify this works as expected.
54 lines
2.0 KiB
C
54 lines
2.0 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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/* "standalone" module to store a "secondary" UE ID for each UE in DU/CU.
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* Separate from the rest of F1, as it is also relevant for monolithic. */
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#ifndef F1AP_IDS_H_
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#define F1AP_IDS_H_
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#include <stdbool.h>
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#include <stdint.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/sctp.h>
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typedef struct f1_ue_data_t {
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uint32_t secondary_ue;
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sctp_assoc_t e1_assoc_id;
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sctp_assoc_t du_assoc_id; // only used at the CU
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} f1_ue_data_t;
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void cu_init_f1_ue_data(void);
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bool cu_add_f1_ue_data(uint32_t ue_id, const f1_ue_data_t *data);
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bool cu_exists_f1_ue_data(uint32_t ue_id);
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bool cu_update_f1_ue_data(uint32_t ue_id, const f1_ue_data_t *data);
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f1_ue_data_t cu_get_f1_ue_data(uint32_t ue_id);
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bool cu_remove_f1_ue_data(uint32_t ue_id);
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void du_init_f1_ue_data(void);
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bool du_add_f1_ue_data(uint32_t ue_id, const f1_ue_data_t *data);
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bool du_exists_f1_ue_data(uint32_t ue_id);
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f1_ue_data_t du_get_f1_ue_data(uint32_t ue_id);
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bool du_remove_f1_ue_data(uint32_t ue_id);
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#endif /* F1AP_IDS_H_ */
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