165 lines
7.2 KiB
C
165 lines
7.2 KiB
C
/*
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* Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The OpenAirInterface Software Alliance licenses this file to You under
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* the OAI Public License, Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.openairinterface.org/?page_id=698
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*-------------------------------------------------------------------------------
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* For more information about the OpenAirInterface (OAI) Software Alliance:
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* contact@openairinterface.org
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*/
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#include <sys/socket.h>
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#include <netinet/in.h>
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#include <arpa/inet.h>
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#include "nr_mac_gNB.h"
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#include "intertask_interface.h"
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#include "openair3/ocp-gtpu/gtp_itf.h"
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#include "mac_rrc_ul.h"
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#include "lib/f1ap_rrc_message_transfer.h"
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#include "lib/f1ap_interface_management.h"
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#include "lib/f1ap_ue_context.h"
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static f1ap_net_config_t read_DU_IP_config(const eth_params_t* f1_params, const char *f1u_ip_addr)
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{
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f1ap_net_config_t nc = {0};
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nc.CU_f1_ip_address= strdup(f1_params->remote_addr);
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nc.CUport = f1_params->remote_portd;
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nc.DU_f1c_ip_address = strdup(f1_params->my_addr);
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nc.DU_f1u_ip_address = strdup(f1u_ip_addr);
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nc.DUport = f1_params->my_portd;
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LOG_I(F1AP,
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"F1-C DU IPaddr %s, connect to F1-C CU %s, binding GTP to %s\n",
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nc.DU_f1c_ip_address,
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nc.CU_f1_ip_address,
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nc.DU_f1u_ip_address);
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// sctp_in_streams/sctp_out_streams are given by SCTP layer
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return nc;
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}
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static void f1_reset_du_initiated_f1ap(const f1ap_reset_t *reset)
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{
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(void) reset;
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AssertFatal(false, "%s() not implemented yet\n", __func__);
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}
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static void f1_reset_acknowledge_cu_initiated_f1ap(const f1ap_reset_ack_t *ack)
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{
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MessageDef *msg = itti_alloc_new_message(TASK_MAC_GNB, 0, F1AP_RESET_ACK);
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F1AP_RESET_ACK(msg) = cp_f1ap_reset_ack(ack);
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itti_send_msg_to_task(TASK_DU_F1, 0, msg);
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}
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static void f1_setup_request_f1ap(const f1ap_setup_req_t *req)
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{
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MessageDef *msg = itti_alloc_new_message(TASK_MAC_GNB, 0, F1AP_DU_REGISTER_REQ);
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f1ap_setup_req_t f1ap_setup = cp_f1ap_setup_request(req);
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F1AP_DU_REGISTER_REQ(msg).setup_req = f1ap_setup;
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F1AP_DU_REGISTER_REQ(msg).net_config = read_DU_IP_config(&RC.nrmac[0]->eth_params_n, RC.nrmac[0]->f1u_addr);
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itti_send_msg_to_task(TASK_DU_F1, 0, msg);
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}
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static void gnb_du_configuration_update_f1ap(const f1ap_gnb_du_configuration_update_t *upd)
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{
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MessageDef *msg = itti_alloc_new_message(TASK_MAC_GNB, 0, F1AP_GNB_DU_CONFIGURATION_UPDATE);
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/* copy F1AP message */
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f1ap_gnb_du_configuration_update_t cp = cp_f1ap_du_configuration_update(upd);
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/* transfer to ITTI message */
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F1AP_GNB_DU_CONFIGURATION_UPDATE(msg) = cp;
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/* send to RRC task */
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itti_send_msg_to_task(TASK_DU_F1, 0, msg);
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}
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static void ue_context_setup_response_f1ap(const f1ap_ue_context_setup_resp_t *resp)
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{
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MessageDef *msg = itti_alloc_new_message (TASK_MAC_GNB, 0, F1AP_UE_CONTEXT_SETUP_RESP);
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F1AP_UE_CONTEXT_SETUP_RESP(msg) = cp_ue_context_setup_resp(resp);
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itti_send_msg_to_task(TASK_DU_F1, 0, msg);
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}
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static void ue_context_modification_response_f1ap(const f1ap_ue_context_mod_resp_t *resp)
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{
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MessageDef *msg = itti_alloc_new_message(TASK_MAC_GNB, 0, F1AP_UE_CONTEXT_MODIFICATION_RESP);
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F1AP_UE_CONTEXT_MODIFICATION_RESP(msg) = cp_ue_context_mod_resp(resp);
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itti_send_msg_to_task(TASK_DU_F1, 0, msg);
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}
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static void ue_context_modification_required_f1ap(const f1ap_ue_context_modif_required_t *required)
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{
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MessageDef *msg = itti_alloc_new_message(TASK_MAC_GNB, 0, F1AP_UE_CONTEXT_MODIFICATION_REQUIRED);
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f1ap_ue_context_modif_required_t *f1ap_msg = &F1AP_UE_CONTEXT_MODIFICATION_REQUIRED(msg);
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f1ap_msg->gNB_CU_ue_id = required->gNB_CU_ue_id;
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f1ap_msg->gNB_DU_ue_id = required->gNB_DU_ue_id;
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f1ap_msg->du_to_cu_rrc_information = NULL;
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if (required->du_to_cu_rrc_information != NULL) {
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f1ap_msg->du_to_cu_rrc_information = calloc(1, sizeof(*f1ap_msg->du_to_cu_rrc_information));
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AssertFatal(f1ap_msg->du_to_cu_rrc_information != NULL, "out of memory\n");
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du_to_cu_rrc_information_t *du2cu = f1ap_msg->du_to_cu_rrc_information;
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AssertFatal(required->du_to_cu_rrc_information->cellGroupConfig != NULL && required->du_to_cu_rrc_information->cellGroupConfig_length > 0,
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"cellGroupConfig is mandatory\n");
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du2cu->cellGroupConfig_length = required->du_to_cu_rrc_information->cellGroupConfig_length;
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du2cu->cellGroupConfig = malloc(du2cu->cellGroupConfig_length * sizeof(*du2cu->cellGroupConfig));
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AssertFatal(du2cu->cellGroupConfig != NULL, "out of memory\n");
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memcpy(du2cu->cellGroupConfig, required->du_to_cu_rrc_information->cellGroupConfig, du2cu->cellGroupConfig_length);
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AssertFatal(required->du_to_cu_rrc_information->requestedP_MaxFR1 == NULL && required->du_to_cu_rrc_information->requestedP_MaxFR1_length == 0, "not handled yet\n");
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}
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f1ap_msg->cause = required->cause;
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f1ap_msg->cause_value = required->cause_value;
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itti_send_msg_to_task(TASK_DU_F1, 0, msg);
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}
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static void ue_context_release_request_f1ap(const f1ap_ue_context_rel_req_t* req)
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{
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MessageDef *msg = itti_alloc_new_message(TASK_MAC_GNB, 0, F1AP_UE_CONTEXT_RELEASE_REQ);
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F1AP_UE_CONTEXT_RELEASE_REQ(msg) = cp_ue_context_rel_req(req);
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itti_send_msg_to_task(TASK_DU_F1, 0, msg);
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}
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static void ue_context_release_complete_f1ap(const f1ap_ue_context_rel_cplt_t *complete)
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{
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newGtpuDeleteAllTunnels(0, complete->gNB_DU_ue_id);
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MessageDef *msg = itti_alloc_new_message(TASK_MAC_GNB, 0, F1AP_UE_CONTEXT_RELEASE_COMPLETE);
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F1AP_UE_CONTEXT_RELEASE_COMPLETE(msg) = cp_ue_context_rel_cplt(complete);
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itti_send_msg_to_task(TASK_DU_F1, 0, msg);
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}
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static void initial_ul_rrc_message_transfer_f1ap(module_id_t module_id, const f1ap_initial_ul_rrc_message_t *ul_rrc)
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{
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MessageDef *msg = itti_alloc_new_message(TASK_MAC_GNB, 0, F1AP_INITIAL_UL_RRC_MESSAGE);
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f1ap_initial_ul_rrc_message_t *f1ap_msg = &F1AP_INITIAL_UL_RRC_MESSAGE(msg);
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*f1ap_msg = cp_initial_ul_rrc_message_transfer(ul_rrc);
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itti_send_msg_to_task(TASK_DU_F1, module_id, msg);
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}
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void mac_rrc_ul_f1ap_init(struct nr_mac_rrc_ul_if_s *mac_rrc)
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{
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mac_rrc->f1_reset = f1_reset_du_initiated_f1ap;
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mac_rrc->f1_reset_acknowledge = f1_reset_acknowledge_cu_initiated_f1ap;
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mac_rrc->f1_setup_request = f1_setup_request_f1ap;
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mac_rrc->gnb_du_configuration_update = gnb_du_configuration_update_f1ap;
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mac_rrc->ue_context_setup_response = ue_context_setup_response_f1ap;
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mac_rrc->ue_context_modification_response = ue_context_modification_response_f1ap;
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mac_rrc->ue_context_modification_required = ue_context_modification_required_f1ap;
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mac_rrc->ue_context_release_request = ue_context_release_request_f1ap;
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mac_rrc->ue_context_release_complete = ue_context_release_complete_f1ap;
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mac_rrc->initial_ul_rrc_message_transfer = initial_ul_rrc_message_transfer_f1ap;
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}
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