/* * 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 f1ap_common.c * \brief f1ap procedures for both CU and DU * \author EURECOM/NTUST * \date 2018 * \version 0.1 * \company Eurecom * \email: navid.nikaein@eurecom.fr, bing-kai.hong@eurecom.fr * \note * \warning */ #include "f1ap_common.h" static f1ap_cudu_inst_t *f1_du_inst[NUMBER_OF_eNB_MAX]= {0}; static f1ap_cudu_inst_t *f1_cu_inst[NUMBER_OF_eNB_MAX]= {0}; #if defined(EMIT_ASN_DEBUG_EXTERN) int asn_debug = 0; int asn1_xer_print = 0; inline void ASN_DEBUG(const char *fmt, ...) { if (asn_debug) { int adi = asn_debug_indent; va_list ap; va_start(ap, fmt); fprintf(stderr, "[ASN1]"); while(adi--) fprintf(stderr, " "); vfprintf(stderr, fmt, ap); fprintf(stderr, "\n"); va_end(ap); } } #endif uint8_t F1AP_get_next_transaction_identifier(instance_t enb_mod_idP, instance_t cu_mod_idP) { static uint8_t transaction_identifier[NUMBER_OF_eNB_MAX]; transaction_identifier[enb_mod_idP+cu_mod_idP] = (transaction_identifier[enb_mod_idP+cu_mod_idP] + 1) % F1AP_TRANSACTION_IDENTIFIER_NUMBER; //LOG_T(F1AP,"generated xid is %d\n",transaction_identifier[enb_mod_idP+cu_mod_idP]); return transaction_identifier[enb_mod_idP+cu_mod_idP]; } f1ap_cudu_inst_t *getCxt(F1_t isCU, instance_t instanceP) { //Fixme: 4G F1 has race condtions, someone may debug it, using this test /* static pid_t t=-1; pid_t tNew=gettid(); AssertFatal ( t==-1 || t==tNew, "This is not thread safe\n"); t=tNew; */ AssertFatal( instanceP < sizeofArray(f1_cu_inst), ""); return isCU == CUtype ? f1_cu_inst[ instanceP]: f1_du_inst[ instanceP]; } void createF1inst(F1_t isCU, instance_t instanceP, f1ap_setup_req_t *req) { if (isCU == CUtype) { AssertFatal(f1_cu_inst[instanceP] == NULL, "Double call to F1 CU init\n"); f1_cu_inst[instanceP]=( f1ap_cudu_inst_t *) calloc(1, sizeof( f1ap_cudu_inst_t)); //memcpy(f1_cu_inst[instanceP]->setupReq, req, sizeof(f1ap_setup_req_t) ); } else { AssertFatal(f1_du_inst[instanceP] == NULL, "Double call to F1 DU init\n"); f1_du_inst[instanceP]=( f1ap_cudu_inst_t *) calloc(1, sizeof(f1ap_cudu_inst_t)); memcpy(&f1_du_inst[instanceP]->setupReq, req, sizeof(f1ap_setup_req_t) ); } } int f1ap_add_ue(F1_t isCu, instance_t instanceP, rnti_t rntiP) { f1ap_cudu_inst_t *f1_inst=getCxt(isCu, instanceP); for (int i = 0; i < MAX_MOBILES_PER_ENB; i++) { if (f1_inst->f1ap_ue[i].rnti == rntiP) { f1_inst->f1ap_ue[i].f1ap_uid = i; LOG_I(F1AP, "Updating the index of UE with RNTI %x and du_ue_f1ap_id %ld\n", f1_inst->f1ap_ue[i].rnti, f1_inst->f1ap_ue[i].du_ue_f1ap_id); return i; } } // We didn't find the rnti for (int i = 0; i < MAX_MOBILES_PER_ENB; i++) { if (f1_inst->f1ap_ue[i].rnti == 0 ) { f1_inst->f1ap_ue[i].rnti = rntiP; f1_inst->f1ap_ue[i].f1ap_uid = i; f1_inst->f1ap_ue[i].du_ue_f1ap_id = rntiP; f1_inst->f1ap_ue[i].cu_ue_f1ap_id = rntiP; f1_inst->num_ues++; LOG_I(F1AP, "Adding a new UE with RNTI %x and cu/du ue_f1ap_id %ld\n", f1_inst->f1ap_ue[i].rnti, f1_inst->f1ap_ue[i].du_ue_f1ap_id); return i; } } return -1; } int f1ap_remove_ue(F1_t isCu, instance_t instanceP, rnti_t rntiP) { f1ap_cudu_inst_t *f1_inst=getCxt(isCu, instanceP); for (int i = 0; i < MAX_MOBILES_PER_ENB; i++) { if (f1_inst->f1ap_ue[i].rnti == rntiP) { f1_inst->f1ap_ue[i].rnti = 0; break; } } f1_inst->num_ues--; return 0; } int f1ap_get_du_ue_f1ap_id(F1_t isCu, instance_t instanceP, rnti_t rntiP) { f1ap_cudu_inst_t *f1_inst=getCxt(isCu, instanceP); for (int i = 0; i < MAX_MOBILES_PER_ENB; i++) { if (f1_inst->f1ap_ue[i].rnti == rntiP) { return f1_inst->f1ap_ue[i].du_ue_f1ap_id; } } return -1; } int f1ap_get_cu_ue_f1ap_id(F1_t isCu, instance_t instanceP, rnti_t rntiP) { f1ap_cudu_inst_t *f1_inst=getCxt(isCu, instanceP); for (int i = 0; i < MAX_MOBILES_PER_ENB; i++) { if (f1_inst->f1ap_ue[i].rnti == rntiP) { return f1_inst->f1ap_ue[i].cu_ue_f1ap_id; } } return -1; } int f1ap_get_rnti_by_du_id(F1_t isCu, instance_t instanceP, instance_t du_ue_f1ap_id ) { f1ap_cudu_inst_t *f1_inst=getCxt(isCu, instanceP); for (int i = 0; i < MAX_MOBILES_PER_ENB; i++) { if (f1_inst->f1ap_ue[i].du_ue_f1ap_id == du_ue_f1ap_id) { return f1_inst->f1ap_ue[i].rnti; } } return -1; } int f1ap_get_rnti_by_cu_id(F1_t isCu, instance_t instanceP, instance_t cu_ue_f1ap_id ) { f1ap_cudu_inst_t *f1_inst=getCxt(isCu, instanceP); for (int i = 0; i < MAX_MOBILES_PER_ENB; i++) { if (f1_inst->f1ap_ue[i].cu_ue_f1ap_id == cu_ue_f1ap_id) { return f1_inst->f1ap_ue[i].rnti; } } return -1; } int f1ap_du_add_cu_ue_id(instance_t instanceP, instance_t du_ue_f1ap_id, instance_t cu_ue_f1ap_id) { f1ap_cudu_inst_t *f1_inst=getCxt(DUtype, instanceP); instance_t f1ap_uid=-1; for (int i = 0; i < MAX_MOBILES_PER_ENB; i++) { if (f1_inst->f1ap_ue[i].du_ue_f1ap_id == du_ue_f1ap_id) { f1ap_uid=i; break; } } if (f1ap_uid < 0 || f1ap_uid >= MAX_MOBILES_PER_ENB) return -1; f1_inst->f1ap_ue[f1ap_uid].cu_ue_f1ap_id = cu_ue_f1ap_id; LOG_I(F1AP, "Adding cu_ue_f1ap_id %ld for UE with RNTI %x\n", cu_ue_f1ap_id, f1_inst->f1ap_ue[f1ap_uid].rnti); return 0; } int f1ap_assoc_id(F1_t isCu, instance_t instanceP) { f1ap_setup_req_t *f1_inst=f1ap_req(isCu, instanceP); return f1_inst->assoc_id; }