/*
* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* this work for additional information regarding copyright ownership.
* The OpenAirInterface Software Alliance licenses this file to You under
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* 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,
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* See the License for the specific language governing permissions and
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*-------------------------------------------------------------------------------
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*/
/*! \file openair2/F1AP/f1ap_du_task.c
* \brief data structures for F1 interface modules
* \author EURECOM/NTUST
* \date 2018
* \version 0.1
* \company Eurecom
* \email: navid.nikaein@eurecom.fr, raymond.knopp@eurecom.fr, bing-kai.hong@eurecom.fr
* \note
* \warning
*/
#include "f1ap_common.h"
#include "f1ap_handlers.h"
#include "f1ap_du_interface_management.h"
#include "f1ap_du_ue_context_management.h"
#include "f1ap_du_rrc_message_transfer.h"
#include "f1ap_du_task.h"
#include "proto_agent.h"
extern RAN_CONTEXT_t RC;
f1ap_setup_req_t *f1ap_du_data;
f1ap_cudu_inst_t f1ap_du_inst[MAX_eNB];
void du_task_send_sctp_association_req(instance_t instance, f1ap_setup_req_t *f1ap_setup_req) {
DevAssert(f1ap_setup_req != NULL);
MessageDef *message_p = NULL;
sctp_new_association_req_t *sctp_new_association_req_p = NULL;
message_p = itti_alloc_new_message(TASK_DU_F1, SCTP_NEW_ASSOCIATION_REQ);
sctp_new_association_req_p = &message_p->ittiMsg.sctp_new_association_req;
sctp_new_association_req_p->ulp_cnx_id = instance;
sctp_new_association_req_p->port = F1AP_PORT_NUMBER;
sctp_new_association_req_p->ppid = F1AP_SCTP_PPID;
sctp_new_association_req_p->in_streams = f1ap_setup_req->sctp_in_streams;
sctp_new_association_req_p->out_streams = f1ap_setup_req->sctp_out_streams;
// remote
memcpy(&sctp_new_association_req_p->remote_address,
&f1ap_setup_req->CU_f1_ip_address,
sizeof(f1ap_setup_req->CU_f1_ip_address));
// local
memcpy(&sctp_new_association_req_p->local_address,
&f1ap_setup_req->DU_f1_ip_address,
sizeof(f1ap_setup_req->DU_f1_ip_address));
// store data
f1ap_du_data = (f1ap_setup_req_t *)calloc(1, sizeof(f1ap_setup_req_t));
*f1ap_du_data = *f1ap_setup_req;
//printf("sib itti message %s\n", f1ap_setup_req_t->sib1[0]);
//printf("nr_cellid : %llx (%lld)",f1ap_setup_req->nr_cellid[0],f1ap_setup_req->nr_cellid[0]);
//du_f1ap_register_to_sctp
itti_send_msg_to_task(TASK_SCTP, instance, message_p);
}
void du_task_handle_sctp_association_resp(instance_t instance, sctp_new_association_resp_t *sctp_new_association_resp) {
DevAssert(sctp_new_association_resp != NULL);
if (sctp_new_association_resp->sctp_state != SCTP_STATE_ESTABLISHED) {
LOG_W(F1AP, "Received unsuccessful result for SCTP association (%u), instance %d, cnx_id %u\n",
sctp_new_association_resp->sctp_state,
instance,
sctp_new_association_resp->ulp_cnx_id);
//f1ap_handle_setup_message(instance, sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN);
return; // exit -1 for debugging
}
// save the assoc id
f1ap_du_data->assoc_id = sctp_new_association_resp->assoc_id;
f1ap_du_data->sctp_in_streams = sctp_new_association_resp->in_streams;
f1ap_du_data->sctp_out_streams = sctp_new_association_resp->out_streams;
f1ap_du_data->default_sctp_stream_id = 0;
/* setup parameters for F1U and start the server */
const cudu_params_t params = {
.local_ipv4_address = RC.mac[instance]->eth_params_n.my_addr,
.local_port = RC.mac[instance]->eth_params_n.my_portd,
.remote_ipv4_address = RC.mac[instance]->eth_params_n.remote_addr,
.remote_port = RC.mac[instance]->eth_params_n.remote_portd
};
AssertFatal(proto_agent_start(instance, ¶ms) == 0,
"could not start PROTO_AGENT for F1U on instance %d!\n", instance);
DU_send_F1_SETUP_REQUEST(instance);
}
void du_task_handle_sctp_data_ind(instance_t instance, sctp_data_ind_t *sctp_data_ind)
{
int result;
DevAssert(sctp_data_ind != NULL);
f1ap_handle_message(instance, sctp_data_ind->assoc_id, sctp_data_ind->stream,
sctp_data_ind->buffer, sctp_data_ind->buffer_length);
result = itti_free(TASK_UNKNOWN, sctp_data_ind->buffer);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
}
void *F1AP_DU_task(void *arg) {
//sctp_cu_init();
MessageDef *received_msg = NULL;
int result;
LOG_I(F1AP, "Starting F1AP at DU\n");
//f1ap_eNB_prepare_internal_data();
itti_mark_task_ready(TASK_DU_F1);
// SCTP
while (1) {
itti_receive_msg(TASK_DU_F1, &received_msg);
switch (ITTI_MSG_ID(received_msg)) {
// case TERMINATE_MESSAGE:
// //F1AP_WARN(" *** Exiting F1AP DU thread\n");
// itti_exit_task();
// break;
case F1AP_SETUP_REQ: // this is not a true F1 message, but rather an ITTI message sent by enb_app
// 1. save the itti msg so that you can use it to sen f1ap_setup_req, fill the f1ap_setup_req message,
// 2. store the message in f1ap context, that is also stored in RC
// 2. send a sctp_association req
LOG_I(F1AP, "DU Task Received F1AP_SETUP_REQ\n");
du_task_send_sctp_association_req(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&F1AP_SETUP_REQ(received_msg));
break;
case SCTP_NEW_ASSOCIATION_RESP:
// 1. store the respon
// 2. send the f1setup_req
LOG_I(F1AP, "DU Task Received SCTP_NEW_ASSOCIATION_RESP\n");
du_task_handle_sctp_association_resp(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&received_msg->ittiMsg.sctp_new_association_resp);
break;
case SCTP_DATA_IND:
// ex: any F1 incoming message for DU ends here
LOG_I(F1AP, "DU Task Received SCTP_DATA_IND\n");
du_task_handle_sctp_data_ind(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&received_msg->ittiMsg.sctp_data_ind);
break;
case F1AP_UL_RRC_MESSAGE: // to rrc
LOG_I(F1AP, "DU Task Received F1AP_UL_RRC_MESSAGE\n");
DU_send_UL_RRC_MESSAGE_TRANSFER(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&F1AP_UL_RRC_MESSAGE(received_msg));
break;
case F1AP_UE_CONTEXT_RELEASE_REQ: // from MAC
LOG_I(F1AP, "DU Task Received F1AP_UE_CONTEXT_RELEASE_REQ\n");
DU_send_UE_CONTEXT_RELEASE_REQUEST(ITTI_MESSAGE_GET_INSTANCE(received_msg),
&F1AP_UE_CONTEXT_RELEASE_REQ(received_msg));
break;
case TERMINATE_MESSAGE:
LOG_W(F1AP, " *** Exiting F1AP thread\n");
itti_exit_task();
break;
default:
LOG_E(F1AP, "DU Received unhandled message: %d:%s\n",
ITTI_MSG_ID(received_msg), ITTI_MSG_NAME(received_msg));
break;
} // switch
result = itti_free (ITTI_MSG_ORIGIN_ID(received_msg), received_msg);
AssertFatal (result == EXIT_SUCCESS, "Failed to free memory (%d)!\n", result);
received_msg = NULL;
} // while
return NULL;
}