/* * 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 */ /*! \file ngap_gNB_ue_context.c * \brief ngap UE context management within gNB * \author Yoshio INOUE, Masayuki HARADA * \date 2020 * \version 0.1 * \email: yoshio.inoue@fujitsu.com,masayuki.harada@fujitsu.com (yoshio.inoue%40fujitsu.com%2cmasayuki.harada%40fujitsu.com) */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <stdint.h> #include "tree.h" #include "intertask_interface.h" #include "ngap_common.h" #include "ngap_gNB_defs.h" #include "ngap_gNB_ue_context.h" int ngap_gNB_compare_gNB_ue_ngap_id( struct ngap_gNB_ue_context_s *p1, struct ngap_gNB_ue_context_s *p2) { if (p1->gNB_ue_ngap_id > p2->gNB_ue_ngap_id) { return 1; } if (p1->gNB_ue_ngap_id < p2->gNB_ue_ngap_id) { return -1; } return 0; } /* Generate the tree management functions */ RB_GENERATE(ngap_ue_map, ngap_gNB_ue_context_s, entries, ngap_gNB_compare_gNB_ue_ngap_id); struct ngap_gNB_ue_context_s *ngap_gNB_allocate_new_UE_context(void) { struct ngap_gNB_ue_context_s *new_p; new_p = malloc(sizeof(struct ngap_gNB_ue_context_s)); if (new_p == NULL) { NGAP_ERROR("Cannot allocate new ue context\n"); return NULL; } memset(new_p, 0, sizeof(struct ngap_gNB_ue_context_s)); return new_p; } struct ngap_gNB_ue_context_s *ngap_gNB_get_ue_context( ngap_gNB_instance_t *instance_p, uint32_t gNB_ue_ngap_id) { ngap_gNB_ue_context_t temp; memset(&temp, 0, sizeof(struct ngap_gNB_ue_context_s)); /* gNB ue ngap id = 24 bits wide */ temp.gNB_ue_ngap_id = gNB_ue_ngap_id & 0x00FFFFFF; return RB_FIND(ngap_ue_map, &instance_p->ngap_ue_head, &temp); } void ngap_gNB_free_ue_context(struct ngap_gNB_ue_context_s *ue_context_p) { if (ue_context_p == NULL) { NGAP_ERROR("Trying to free a NULL context\n"); return; } /* TODO: check that context is currently not in the tree of known * contexts. */ free(ue_context_p); }