Setup request and response messages

openair2/E1AP/e1ap_common.c

+/*
+ * 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
+ *
+ * Author and copyright: Laurent Thomas, open-cells.com
+ *
+ * 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
+ */
+
+#include <time.h>
+#include <stdlib.h>
+#include "e1ap_common.h"
+
+static e1ap_upcp_inst_t *e1_cp_inst[NUMBER_OF_gNB_MAX] = {0};
+static e1ap_upcp_inst_t *e1_up_inst[NUMBER_OF_gNB_MAX] = {0};
+
+e1ap_upcp_inst_t *getCxt(E1_t type, instance_t instance) {
+  AssertFatal( instance < sizeofArray(e1_cp_inst), "instance exceeds limit\n");
+  return type ? e1_up_inst[instance] : e1_cp_inst[instance];
+}
+
+E1AP_TransactionID_t transacID[MAX_NUM_TRANSAC_IDS] = {0}; 
+srand(time(NULL));
+
+bool check_transac_id(E1AP_TransactionID_t id, int *freeIdx) {
+
+  bool isFreeIdxSet = false;
+  for (int i=0; i < MAX_NUM_TRANSAC_IDS; i++) {
+    if (id == transacID[i])
+      return false;
+    else if (!isFreeIdxSet && (transacID[i] == 0)) {
+      *freeIdx = i;
+      isFreeIdxSet = true;
+    }
+  }
+
+  return true;
+}
+
+E1AP_TransactionID_t E1AP_get_next_transaction_identifier() {
+  E1AP_TransactionID_t genTransacId;
+  bool isTransacIdValid = false;
+  int freeIdx;
+
+  while (!isTransacIdValid) {
+    genTransacId = rand();
+    isTransacIdValid = check_transac_Id(genTransacId, &freeIdx);
+  }
+
+  AssertFatal(freeIdx < MAX_NUM_TRANSAC_IDS, "Free Index exceeds array length\n");
+  transacID[freeIdx] = genTransacId;
+  return genTransacId;
+}
+

openair2/E1AP/e1ap_common.h

+/*
+ * 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
+ *
+ * Author and copyright: Laurent Thomas, open-cells.com
+ *
+ * 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
+ */
+
+#include "E1AP_TransactionID.h"
+
+#define MAX_NUM_TRANSAC_IDS 8
+#define E1AP_MAX_NUM_PLMNS
+
+typedef struct PLMN_ID_s {
+  int id;
+} PLMN_ID_t;
+
+typedef struct e1ap_setup_req_s {
+  uint64_t gNB_cu_up_id;
+  char *gNB_cu_up_name;
+  uint64_t transac_id;
+  uint64_t cn_support;
+  int supported_plmns; 
+  PLMN_ID_t plmns[E1AP_MAX_NUM_PLMNS];
+} e1ap_setup_req_t;
+
+typedef struct e1ap_upcp_inst_s {
+  e1ap_setup_req_t setupReq;
+  uint32_t assoc_id;
+} e1ap_upcp_inst_t;
+
+typedef enum {
+  CPtype = 0,
+  UPtype
+} E1_t;