/* * 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 */ #ifndef X2AP_IDS_H_ #define X2AP_IDS_H_ #include <stdint.h> /* maximum number of simultaneous handovers, do not set too high */ #define X2AP_MAX_IDS 16 /* * state: * - when starting handover in source, UE is in state X2ID_STATE_SOURCE_PREPARE * - after receiving HO_ack in source, UE is in state X2ID_STATE_SOURCE_OVERALL * - in target, UE is in state X2ID_STATE_TARGET * The state is used to check timers. */ typedef enum { X2ID_STATE_SOURCE_PREPARE, X2ID_STATE_SOURCE_OVERALL, X2ID_STATE_TARGET } x2id_state_t; typedef struct { int rnti; /* -1 when free */ int id_source; int id_target; /* the target eNB. Real type is x2ap_eNB_data_t * */ void *target; /* state: needed to check timers */ x2id_state_t state; /* timers */ uint64_t t_reloc_prep_start; uint64_t tx2_reloc_overall_start; } x2ap_id; typedef struct { x2ap_id ids[X2AP_MAX_IDS]; } x2ap_id_manager; void x2ap_id_manager_init(x2ap_id_manager *m); int x2ap_allocate_new_id(x2ap_id_manager *m); void x2ap_release_id(x2ap_id_manager *m, int id); int x2ap_find_id(x2ap_id_manager *, int id_source, int id_target); int x2ap_find_id_from_id_source(x2ap_id_manager *, int id_source); int x2ap_find_id_from_rnti(x2ap_id_manager *, int rnti); void x2ap_set_ids(x2ap_id_manager *m, int ue_id, int rnti, int id_source, int id_target); void x2ap_id_set_state(x2ap_id_manager *m, int ue_id, x2id_state_t state); /* real type of target is x2ap_eNB_data_t * */ void x2ap_id_set_target(x2ap_id_manager *m, int ue_id, void *target); void x2ap_set_reloc_prep_timer(x2ap_id_manager *m, int ue_id, uint64_t time); void x2ap_set_reloc_overall_timer(x2ap_id_manager *m, int ue_id, uint64_t time); int x2ap_id_get_id_source(x2ap_id_manager *m, int ue_id); int x2ap_id_get_id_target(x2ap_id_manager *m, int ue_id); int x2ap_id_get_rnti(x2ap_id_manager *m, int ue_id); void *x2ap_id_get_target(x2ap_id_manager *m, int ue_id); #endif /* X2AP_IDS_H_ */