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/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
* the OAI Public License, Version 1.1 (the "License"); you may not use this file
* except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.openairinterface.org/?page_id=698
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*-------------------------------------------------------------------------------
* For more information about the OpenAirInterface (OAI) Software Alliance:
* contact@openairinterface.org
*/
/* "standalone" module to store a "secondary" UE ID for each UE in DU/CU.
* Separate from the rest of F1, as it is also relevant for monolithic. */
#include "f1ap_ids.h"
#include <pthread.h>
#include "common/utils/hashtable/hashtable.h"
#include "common/utils/assertions.h"
/* we have separate versions for CU and DU, as both CU&DU might coexist in the
* same process */
static hash_table_t *cu2du_ue_mapping;
static pthread_mutex_t cu2du_mutex = PTHREAD_MUTEX_INITIALIZER;
void cu_init_f1_ue_data(void)
{
pthread_mutex_lock(&cu2du_mutex);
DevAssert(cu2du_ue_mapping == NULL);
cu2du_ue_mapping = hashtable_create(1319, NULL, free); // 1319 is prime, default hash func (unit), free()
DevAssert(cu2du_ue_mapping != NULL);
pthread_mutex_unlock(&cu2du_mutex);
}
bool cu_add_f1_ue_data(uint32_t ue_id, const f1_ue_data_t *data)
{
pthread_mutex_lock(&cu2du_mutex);
DevAssert(cu2du_ue_mapping != NULL);
uint64_t key = ue_id;
if (hashtable_is_key_exists(cu2du_ue_mapping, key) == HASH_TABLE_OK) {
pthread_mutex_unlock(&cu2du_mutex);
return false;
}
f1_ue_data_t *idata = malloc(sizeof(*idata));
AssertFatal(idata != NULL, "cannot allocate memory\n");
*idata = *data;
hashtable_rc_t ret = hashtable_insert(cu2du_ue_mapping, key, idata);
pthread_mutex_unlock(&cu2du_mutex);
return ret == HASH_TABLE_OK;
}
bool cu_exists_f1_ue_data(uint32_t ue_id)
{
pthread_mutex_lock(&cu2du_mutex);
DevAssert(cu2du_ue_mapping != NULL);
uint64_t key = ue_id;
hashtable_rc_t ret = hashtable_is_key_exists(cu2du_ue_mapping, key);
pthread_mutex_unlock(&cu2du_mutex);
return ret == HASH_TABLE_OK;
}
f1_ue_data_t cu_get_f1_ue_data(uint32_t ue_id)
{
pthread_mutex_lock(&cu2du_mutex);
DevAssert(cu2du_ue_mapping != NULL);
uint64_t key = ue_id;
void *data = NULL;
hashtable_rc_t ret = hashtable_get(cu2du_ue_mapping, key, &data);
AssertFatal(ret == HASH_TABLE_OK && data != NULL, "element for ue_id %d not found\n", ue_id);
f1_ue_data_t ued = *(f1_ue_data_t *)data;
pthread_mutex_unlock(&cu2du_mutex);
return ued;
}
bool cu_remove_f1_ue_data(uint32_t ue_id)
{
pthread_mutex_lock(&cu2du_mutex);
DevAssert(cu2du_ue_mapping != NULL);
uint64_t key = ue_id;
hashtable_rc_t ret = hashtable_remove(cu2du_ue_mapping, key);
pthread_mutex_unlock(&cu2du_mutex);
return ret == HASH_TABLE_OK;
}
/* DU version below */
static hash_table_t *du2cu_ue_mapping;
static pthread_mutex_t du2cu_mutex = PTHREAD_MUTEX_INITIALIZER;
void du_init_f1_ue_data(void)
{
pthread_mutex_lock(&du2cu_mutex);
DevAssert(du2cu_ue_mapping == NULL);
du2cu_ue_mapping = hashtable_create(1319, NULL, free); // 1319 is prime, default hash func (unit), free()
DevAssert(du2cu_ue_mapping != NULL);
pthread_mutex_unlock(&du2cu_mutex);
}
bool du_add_f1_ue_data(uint32_t ue_id, const f1_ue_data_t *data)
{
pthread_mutex_lock(&du2cu_mutex);
DevAssert(du2cu_ue_mapping != NULL);
uint64_t key = ue_id;
if (hashtable_is_key_exists(du2cu_ue_mapping, key) == HASH_TABLE_OK) {
pthread_mutex_unlock(&du2cu_mutex);
return false;
}
f1_ue_data_t *idata = malloc(sizeof(*idata));
AssertFatal(idata != NULL, "cannot allocate memory\n");
*idata = *data;
hashtable_rc_t ret = hashtable_insert(du2cu_ue_mapping, key, idata);
pthread_mutex_unlock(&du2cu_mutex);
return ret == HASH_TABLE_OK;
}
bool du_exists_f1_ue_data(uint32_t ue_id)
{
pthread_mutex_lock(&du2cu_mutex);
DevAssert(du2cu_ue_mapping != NULL);
uint64_t key = ue_id;
hashtable_rc_t ret = hashtable_is_key_exists(du2cu_ue_mapping, key);
pthread_mutex_unlock(&du2cu_mutex);
return ret == HASH_TABLE_OK;
}
f1_ue_data_t du_get_f1_ue_data(uint32_t ue_id)
{
pthread_mutex_lock(&du2cu_mutex);
DevAssert(du2cu_ue_mapping != NULL);
uint64_t key = ue_id;
void *data = NULL;
hashtable_rc_t ret = hashtable_get(du2cu_ue_mapping, key, &data);
AssertFatal(ret == HASH_TABLE_OK && data != NULL, "element for ue_id %d not found\n", ue_id);
f1_ue_data_t ued = *(f1_ue_data_t *)data;
pthread_mutex_unlock(&du2cu_mutex);
return ued;
}
bool du_remove_f1_ue_data(uint32_t ue_id)
{
pthread_mutex_lock(&du2cu_mutex);
DevAssert(du2cu_ue_mapping != NULL);
uint64_t key = ue_id;
hashtable_rc_t ret = hashtable_remove(du2cu_ue_mapping, key);
pthread_mutex_unlock(&du2cu_mutex);
return ret == HASH_TABLE_OK;
}