MME2 changes - Propped commits from openmme/paging branch. Added scripts
for code gen
Change-Id: Ie55032217232214ac8544ca76ea34335205329e4
diff --git a/src/s1ap/handlers/attach_id_req.c b/src/s1ap/handlers/attach_id_req.c
new file mode 100644
index 0000000..45b1dcc
--- /dev/null
+++ b/src/s1ap/handlers/attach_id_req.c
@@ -0,0 +1,213 @@
+/*
+* Copyright 2019-present Open Networking Foundation
+*
+* SPDX-License-Identifier: Apache-2.0
+*
+* Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
+*
+* 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.
+*
+*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <pthread.h>
+#include <string.h>
+#include <unistd.h>
+#include <stdint.h>
+
+#include "log.h"
+#include "err_codes.h"
+#include "s1ap.h"
+#include "message_queues.h"
+#include "ipc_api.h"
+
+#include "main.h"
+#include "sctp_conn.h"
+#include "msgType.h"
+
+
+
+/**
+* Get ProtocolIE value ID Request sent by mme-app
+*/
+static int
+get_attach_id_request_protoie_value(struct proto_IE *value,struct attachIdReq_info *g_attachIdReqInfo)
+{
+
+
+ value->no_of_IEs = ATTACH_ID_REQUEST_NO_OF_IES;
+
+ value->data = (proto_IEs *) malloc(ATTACH_ID_REQUEST_NO_OF_IES*
+ sizeof(proto_IEs));
+
+
+ value->data[0].val.mme_ue_s1ap_id = g_attachIdReqInfo->ue_idx;
+
+ value->data[1].val.enb_ue_s1ap_id = g_attachIdReqInfo->s1ap_enb_ue_id;
+
+
+ log_msg(LOG_INFO, "mme_ue_s1ap_id %d and enb_ue_s1ap_id %d\n",
+ g_attachIdReqInfo->ue_idx, g_attachIdReqInfo->s1ap_enb_ue_id);
+
+ /* TODO: Add enum for security header type */
+ value->data[2].val.nas.header.security_header_type = 0;
+ value->data[2].val.nas.header.proto_discriminator = EPSMobilityManagementMessages;
+ value->data[2].val.nas.header.message_type = IdentityRequest;
+ value->data[2].val.nas.header.nas_security_param = 0;
+
+ return SUCCESS;
+}
+
+
+/**
+* Stage specific message processing.
+*/
+static int
+s1ap_attach_id_req_processing(struct attachIdReq_info *g_attachIdReqInfo)
+{
+ struct Buffer g_buffer;
+ struct Buffer g_value_buffer;
+ struct Buffer g_nas_buffer;
+
+ struct s1ap_PDU s1apPDU= {0};
+
+
+ s1apPDU.procedurecode = id_downlinkNASTransport;
+ s1apPDU.criticality = CRITICALITY_IGNORE;
+
+ get_attach_id_request_protoie_value(&s1apPDU.value,g_attachIdReqInfo);
+
+ /* Copy values to buffer from s1apPDU */
+
+ g_buffer.pos = 0;
+
+ uint8_t initiating_message = 0; /* TODO: Add enum */
+ buffer_copy(&g_buffer, &initiating_message,
+ sizeof(initiating_message));
+
+ buffer_copy(&g_buffer, &s1apPDU.procedurecode,
+ sizeof(s1apPDU.procedurecode));
+
+ buffer_copy(&g_buffer, &s1apPDU.criticality,
+ sizeof(s1apPDU.criticality));
+
+ /* Copy values in g_value_buffer */
+ g_value_buffer.pos = 0;
+
+ /* TODO remove hardcoded values */
+ unsigned char chProtoIENo[3] = {0,0,3};
+
+ buffer_copy(&g_value_buffer, chProtoIENo, 3);
+
+ unsigned char tmpStr[4];
+ /* id-MME-UE-S1AP-ID */
+ uint16_t protocolIe_Id = id_MME_UE_S1AP_ID;
+ copyU16(tmpStr, protocolIe_Id);
+ buffer_copy(&g_value_buffer, tmpStr,
+ sizeof(protocolIe_Id));
+
+ uint8_t protocolIe_criticality = CRITICALITY_REJECT;
+ buffer_copy(&g_value_buffer, &protocolIe_criticality,
+ sizeof(protocolIe_criticality));
+
+ uint8_t datalen = 2;
+
+ /* TODO needs proper handling*/
+ unsigned char mme_ue_id[3];
+ datalen = copyU16(mme_ue_id,
+ s1apPDU.value.data[0].val.mme_ue_s1ap_id);
+ buffer_copy(&g_value_buffer, &datalen, sizeof(datalen));
+ buffer_copy(&g_value_buffer, mme_ue_id, datalen);
+
+ /* id-eNB-UE-S1AP-ID */
+
+ protocolIe_Id = id_eNB_UE_S1AP_ID;
+ copyU16(tmpStr, protocolIe_Id);
+ buffer_copy(&g_value_buffer, tmpStr,
+ sizeof(protocolIe_Id));
+
+ buffer_copy(&g_value_buffer, &protocolIe_criticality,
+ sizeof(protocolIe_criticality));
+
+
+ /* TODO needs proper handling*/
+ unsigned char enb_ue_id[3];
+ datalen = copyU16(enb_ue_id,
+ s1apPDU.value.data[1].val.enb_ue_s1ap_id);
+ buffer_copy(&g_value_buffer, &datalen, sizeof(datalen));
+ buffer_copy(&g_value_buffer, enb_ue_id, datalen);
+
+
+ /* id-NAS-PDU */
+ protocolIe_Id = id_NAS_PDU;
+ copyU16(tmpStr, protocolIe_Id);
+ buffer_copy(&g_value_buffer, tmpStr,
+ sizeof(protocolIe_Id));
+
+ buffer_copy(&g_value_buffer, &protocolIe_criticality,
+ sizeof(protocolIe_criticality));
+
+ struct nasPDU *nas = &(s1apPDU.value.data[2].val.nas);
+ uint8_t value = (nas->header.security_header_type) |
+ nas->header.proto_discriminator;
+
+ g_nas_buffer.pos = 0;
+
+ buffer_copy(&g_nas_buffer, &value, sizeof(value));
+
+ buffer_copy(&g_nas_buffer, &nas->header.message_type,
+ sizeof(nas->header.message_type));
+
+ value = g_attachIdReqInfo->ue_type;
+ buffer_copy(&g_nas_buffer, &value, sizeof(value));
+
+ datalen = g_nas_buffer.pos + 1;
+
+ buffer_copy(&g_value_buffer, &datalen,
+ sizeof(datalen));
+
+ buffer_copy(&g_value_buffer, &g_nas_buffer.pos,
+ sizeof(g_nas_buffer.pos));
+
+
+ buffer_copy(&g_value_buffer, &g_nas_buffer,
+ g_nas_buffer.pos);
+
+ buffer_copy(&g_buffer, &g_value_buffer.pos,
+ sizeof(g_value_buffer.pos));
+
+ buffer_copy(&g_buffer, &g_value_buffer,
+ g_value_buffer.pos);
+
+ free(s1apPDU.value.data[2].val.nas.elements);
+ free(s1apPDU.value.data);
+
+ send_sctp_msg(g_attachIdReqInfo->enb_fd, g_buffer.buf, g_buffer.pos, 1);
+
+ return SUCCESS;
+}
+
+
+
+/**
+* Thread function for stage.
+*/
+void*
+idreq_handler(void *data)
+{
+
+ log_msg(LOG_INFO, "S1Ap attach Id Request handler ready.\n");
+
+ s1ap_attach_id_req_processing((struct attachIdReq_info *)data);
+
+ return NULL;
+}
+