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C++

/**
* Copyright 2013-2023 Software Radio Systems Limited
*
* This file is part of srsRAN.
*
* srsRAN is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsRAN is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include "e2sm_kpm.h"
#include "srsran/asn1/e2ap.h"
#include "srsran/common/task_scheduler.h"
#include "srsran/common/timers.h"
#include "srsran/interfaces/e2_metrics_interface.h"
#include "srsran/interfaces/enb_metrics_interface.h"
#include "srsran/srsran.h"
#ifndef RIC_E2AP_H
#define RIC_E2AP_H
namespace srsenb {
using namespace asn1::e2ap;
using namespace asn1::e2sm_kpm;
typedef struct {
uint16_t ric_id;
uint16_t plmn_id;
} global_ric_id_t;
typedef struct {
e2node_component_interface_type_e interface_type;
std::string amf_name;
std::string request_part;
std::string response_part;
} e2_node_component_t;
typedef struct {
uint32_t ric_requestor_id;
uint32_t ric_instance_id;
uint32_t ra_nfunction_id;
std::vector<uint32_t> admitted_actions;
std::vector<uint32_t> not_admitted_actions;
} ric_subscription_reponse_t;
class e2_agent;
class e2ap
{
public:
e2ap(srslog::basic_logger& logger,
e2_agent* _e2_agent,
srsenb::e2_interface_metrics* _gnb_metrics,
srsran::task_scheduler* _task_sched_ptr);
~e2ap();
e2_ap_pdu_c generate_setup_request();
int process_setup_response(e2setup_resp_s setup_response);
int process_setup_failure();
int process_subscription_request(ricsubscription_request_s ric_subscription_request);
int process_subscription_delete_request(ricsubscription_delete_request_s ricsubscription_delete_request);
int process_subscription_modification_request(uint32_t ric_subscription_modification_request);
int process_subscription_modification_confirm(uint32_t ric_subscription_modification_confirm);
int process_subscription_modification_refuse(uint32_t ric_subscription_modification_refuse);
e2_ap_pdu_c generate_subscription_response(ric_subscription_reponse_t ric_subscription_reponse);
e2_ap_pdu_c generate_subscription_failure(ric_subscription_reponse_t ric_subscription_reponse);
e2_ap_pdu_c generate_subscription_delete_response(ric_subscription_reponse_t ric_subscription_reponse);
e2_ap_pdu_c generate_subscription_delete_failure(ric_subscription_reponse_t ric_subscription_reponse);
e2_ap_pdu_c generate_subscription_delete_required(ric_subscription_reponse_t ric_subscription_reponse);
e2_ap_pdu_c generate_subscription_modification_response();
e2_ap_pdu_c generate_subscription_modification_failure();
e2_ap_pdu_c generate_subscription_modification_required();
e2_ap_pdu_c generate_indication(ric_indication_t& ric_indication);
e2_ap_pdu_c generate_reset_request();
e2_ap_pdu_c generate_reset_response();
int process_reset_request(reset_request_s reset_request);
int process_reset_response(reset_resp_s reset_response);
int process_e2_setup_failure(e2setup_fail_s e2setup_failure);
int process_ric_service_update_failure(ricservice_upd_fail_s ric_service_update_failure);
int process_e2_node_config_update_failure(e2node_cfg_upd_fail_s e2node_config_update_failure);
int process_e2_removal_failure(e2_removal_fail_s e2_remove_failure);
bool queue_send_e2ap_pdu(e2_ap_pdu_c e2ap_pdu);
int get_reset_id();
bool get_func_desc(uint32_t ran_func_id, RANfunction_description& fdesc);
bool send_setup_request() { return !e2_established && pending_e2_setup; }
class ric_subscription;
private:
srslog::basic_logger& logger;
e2_agent* _e2_agent;
e2sm_kpm e2sm_;
bool e2_established = false;
srsran::unique_timer e2_procedure_timeout;
bool pending_e2_setup = true;
bool pending_e2_node_config_update = false;
bool pending_ric_service_update = false;
bool pending_e2_removal = false;
int setup_procedure_transaction_id = 0;
uint64_t plmn_id = 0x05f510;
uint64_t gnb_id = 1;
global_ric_id_t global_ric_id = {};
std::map<uint32_t, RANfunction_description> ran_functions;
srsenb::e2_interface_metrics* gnb_metrics = nullptr;
srsran::task_scheduler* task_sched_ptr = nullptr;
bool reset_response_received = false;
int reset_transaction_id = 1;
cause_c reset_cause = cause_c();
int reset_id = 1;
std::vector<std::unique_ptr<ric_subscription> > active_subscriptions;
};
} // namespace srsenb
#endif /* RIC_E2AP_H */