/* * 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 openair2/F1AP/f1ap_cu_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_cu_interface_management.h" #include "f1ap_cu_rrc_message_transfer.h" #include "f1ap_cu_ue_context_management.h" #include "f1ap_cu_task.h" #include //Fixme: Uniq dirty DU instance, by global var, datamodel need better management instance_t CUuniqInstance=0; static instance_t cu_task_create_gtpu_instance_to_du(eth_params_t *IPaddrs) { openAddr_t tmp= {0}; strncpy(tmp.originHost, IPaddrs->my_addr, sizeof(tmp.originHost)-1); strncpy(tmp.destinationHost, IPaddrs->remote_addr, sizeof(tmp.destinationHost)-1); sprintf(tmp.originService, "%d", IPaddrs->my_portd); sprintf(tmp.destinationService, "%d", IPaddrs->remote_portd); return gtpv1Init(tmp); } static void cu_task_handle_sctp_association_ind(instance_t instance, sctp_new_association_ind_t *sctp_new_association_ind, eth_params_t *IPaddrs) { createF1inst(true, instance, NULL); // save the assoc id f1ap_setup_req_t *f1ap_cu_data=f1ap_req(true, instance); f1ap_cu_data->assoc_id = sctp_new_association_ind->assoc_id; f1ap_cu_data->sctp_in_streams = sctp_new_association_ind->in_streams; f1ap_cu_data->sctp_out_streams = sctp_new_association_ind->out_streams; f1ap_cu_data->default_sctp_stream_id = 0; getCxt(CUtype, instance)->gtpInst=cu_task_create_gtpu_instance_to_du(IPaddrs); AssertFatal(getCxt(CUtype, instance)->gtpInst>0,"Failed to create CU F1-U UDP listener"); // Fixme: fully inconsistent instances management // dirty global var is a bad fix CUuniqInstance=getCxt(CUtype, instance)->gtpInst; } static void cu_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 %ld, cnx_id %u\n", sctp_new_association_resp->sctp_state, instance, sctp_new_association_resp->ulp_cnx_id); //if (sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN) //proto_agent_stop(instance); //f1ap_handle_setup_message(instance, sctp_new_association_resp->sctp_state == SCTP_STATE_SHUTDOWN); return; // exit -1 for debugging } } static void cu_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); } static void cu_task_send_sctp_init_req(instance_t instance, char *my_addr) { // 1. get the itti msg, and retrive the enb_id from the message // 2. use RC.rrc[enb_id] to fill the sctp_init_t with the ip, port // 3. creat an itti message to init LOG_I(F1AP, "F1AP_CU_SCTP_REQ(create socket)\n"); MessageDef *message_p = NULL; message_p = itti_alloc_new_message (TASK_CU_F1, 0, SCTP_INIT_MSG); message_p->ittiMsg.sctp_init.port = F1AP_PORT_NUMBER; message_p->ittiMsg.sctp_init.ppid = F1AP_SCTP_PPID; message_p->ittiMsg.sctp_init.ipv4 = 1; message_p->ittiMsg.sctp_init.ipv6 = 0; message_p->ittiMsg.sctp_init.nb_ipv4_addr = 1; message_p->ittiMsg.sctp_init.ipv4_address[0] = inet_addr(my_addr); /* * SR WARNING: ipv6 multi-homing fails sometimes for localhost. * * * * Disable it for now. */ message_p->ittiMsg.sctp_init.nb_ipv6_addr = 0; message_p->ittiMsg.sctp_init.ipv6_address[0] = "0:0:0:0:0:0:0:1"; itti_send_msg_to_task(TASK_SCTP, instance, message_p); } void *F1AP_CU_task(void *arg) { MessageDef *received_msg = NULL; int result; LOG_I(F1AP, "Starting F1AP at CU\n"); // no RLC in CU, initialize mem pool for PDCP pool_buffer_init(); itti_mark_task_ready(TASK_CU_F1); eth_params_t *IPaddrs; // Hardcoded instance id! if (RC.nrrrc && RC.nrrrc[0]->node_type == ngran_gNB_CU) IPaddrs=&RC.nrrrc[0]->eth_params_s; else IPaddrs=&RC.rrc[0]->eth_params_s; cu_task_send_sctp_init_req(0, IPaddrs->my_addr); while (1) { itti_receive_msg(TASK_CU_F1, &received_msg); switch (ITTI_MSG_ID(received_msg)) { case SCTP_NEW_ASSOCIATION_IND: LOG_I(F1AP, "CU Task Received SCTP_NEW_ASSOCIATION_IND for instance %ld\n", ITTI_MSG_DESTINATION_INSTANCE(received_msg)); cu_task_handle_sctp_association_ind(ITTI_MSG_ORIGIN_INSTANCE(received_msg), &received_msg->ittiMsg.sctp_new_association_ind, IPaddrs); break; case SCTP_NEW_ASSOCIATION_RESP: LOG_I(F1AP, "CU Task Received SCTP_NEW_ASSOCIATION_RESP for instance %ld\n", ITTI_MSG_DESTINATION_INSTANCE(received_msg)); cu_task_handle_sctp_association_resp(ITTI_MSG_DESTINATION_INSTANCE(received_msg), &received_msg->ittiMsg.sctp_new_association_resp); break; case SCTP_DATA_IND: LOG_I(F1AP, "CU Task Received SCTP_DATA_IND for Instance %ld\n", ITTI_MSG_DESTINATION_INSTANCE(received_msg)); cu_task_handle_sctp_data_ind(ITTI_MSG_DESTINATION_INSTANCE(received_msg), &received_msg->ittiMsg.sctp_data_ind); break; case F1AP_SETUP_RESP: // from rrc LOG_I(F1AP, "CU Task Received F1AP_SETUP_RESP\n"); CU_send_F1_SETUP_RESPONSE(ITTI_MSG_DESTINATION_INSTANCE(received_msg), &F1AP_SETUP_RESP(received_msg)); break; case F1AP_GNB_CU_CONFIGURATION_UPDATE: // from rrc LOG_I(F1AP, "CU Task Received F1AP_GNB_CU_CONFIGURAITON_UPDATE\n"); // CU_send_f1setup_resp(ITTI_MSG_DESTINATION_INSTANCE(received_msg), // &F1AP_SETUP_RESP(received_msg)); CU_send_gNB_CU_CONFIGURATION_UPDATE(ITTI_MSG_DESTINATION_INSTANCE(received_msg), &F1AP_GNB_CU_CONFIGURATION_UPDATE(received_msg)); break; case F1AP_DL_RRC_MESSAGE: // from rrc LOG_I(F1AP, "CU Task Received F1AP_DL_RRC_MESSAGE\n"); CU_send_DL_RRC_MESSAGE_TRANSFER(ITTI_MSG_DESTINATION_INSTANCE(received_msg), &F1AP_DL_RRC_MESSAGE(received_msg)); free(F1AP_DL_RRC_MESSAGE(received_msg).rrc_container); break; case F1AP_UE_CONTEXT_SETUP_REQ: // from rrc LOG_I(F1AP, "CU Task Received F1AP_UE_CONTEXT_SETUP_REQ\n"); CU_send_UE_CONTEXT_SETUP_REQUEST(ITTI_MSG_DESTINATION_INSTANCE(received_msg), &F1AP_UE_CONTEXT_SETUP_REQ(received_msg)); break; case F1AP_UE_CONTEXT_MODIFICATION_REQ: LOG_I(F1AP, "CU Task received F1AP_UE_CONTEXT_MODIFICATION_REQ\n"); CU_send_UE_CONTEXT_MODIFICATION_REQUEST(ITTI_MSG_DESTINATION_INSTANCE(received_msg), &F1AP_UE_CONTEXT_MODIFICATION_REQ(received_msg)); break; case F1AP_UE_CONTEXT_RELEASE_CMD: // from rrc LOG_I(F1AP, "CU Task Received F1AP_UE_CONTEXT_RELEASE_CMD\n"); CU_send_UE_CONTEXT_RELEASE_COMMAND(ITTI_MSG_DESTINATION_INSTANCE(received_msg), &F1AP_UE_CONTEXT_RELEASE_CMD(received_msg)); break; // case F1AP_SETUP_RESPONSE: // This is from RRC // CU_send_F1_SETUP_RESPONSE(instance, *f1ap_setup_ind, &(F1AP_SETUP_RESP) f1ap_setup_resp) // break; // case F1AP_SETUP_FAILURE: // This is from RRC // CU_send_F1_SETUP_FAILURE(instance, *f1ap_setup_ind, &(F1AP_SETUP_FAILURE) f1ap_setup_failure) // break; case TERMINATE_MESSAGE: LOG_W(F1AP, " *** Exiting F1AP thread\n"); itti_exit_task(); break; default: LOG_E(F1AP, "CU 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; }