mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
118 lines
3.1 KiB
C++
118 lines
3.1 KiB
C++
/**
|
|
*
|
|
* \section COPYRIGHT
|
|
*
|
|
* Copyright 2013-2017 Software Radio Systems Limited
|
|
*
|
|
* \section LICENSE
|
|
*
|
|
* This file is part of srsLTE.
|
|
*
|
|
* srsLTE 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.
|
|
*
|
|
* srsLTE 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/.
|
|
*
|
|
*/
|
|
|
|
/******************************************************************************
|
|
* File: spgw.h
|
|
* Description: Top-level SP-GW class. Creates and links all
|
|
* interfaces and helpers.
|
|
*****************************************************************************/
|
|
|
|
#ifndef SPGW_H
|
|
#define SPGW_H
|
|
|
|
#include <cstddef>
|
|
#include "srslte/common/log.h"
|
|
#include "srslte/common/logger_file.h"
|
|
#include "srslte/common/log_filter.h"
|
|
#include "srslte/common/buffer_pool.h"
|
|
#include "srslte/common/threads.h"
|
|
#include "srslte/asn1/gtpc.h"
|
|
|
|
namespace srsepc{
|
|
|
|
class mme_gtpc;
|
|
|
|
const uint16_t GTPU_RX_PORT = 2152;
|
|
|
|
typedef struct {
|
|
std::string gtpu_bind_addr;
|
|
std::string sgi_if_addr;
|
|
} spgw_args_t;
|
|
|
|
|
|
typedef struct spgw_tunnel_ctx {
|
|
uint64_t imsi;
|
|
in_addr_t ue_ipv4;
|
|
struct srslte::gtpc_f_teid_ie up_ctrl_fteid;
|
|
struct srslte::gtpc_f_teid_ie up_user_fteid;
|
|
struct srslte::gtpc_f_teid_ie dw_ctrl_fteid;
|
|
struct srslte::gtpc_f_teid_ie dw_user_fteid;
|
|
} spgw_tunnel_ctx_t;
|
|
|
|
class spgw:
|
|
public thread
|
|
{
|
|
public:
|
|
static spgw* get_instance(void);
|
|
static void cleanup(void);
|
|
int init(spgw_args_t* args, srslte::log_filter *spgw_log);
|
|
void stop();
|
|
void run_thread();
|
|
|
|
void handle_create_session_request(struct srslte::gtpc_create_session_request *cs_req, struct srslte::gtpc_pdu *cs_resp_pdu);
|
|
void handle_modify_bearer_request(struct srslte::gtpc_pdu *mb_req_pdu, struct srslte::gtpc_pdu *mb_resp_pdu);
|
|
|
|
private:
|
|
|
|
spgw();
|
|
virtual ~spgw();
|
|
static spgw *m_instance;
|
|
|
|
srslte::error_t init_sgi_if(spgw_args_t *args);
|
|
srslte::error_t init_s1u(spgw_args_t *args);
|
|
uint64_t get_new_ctrl_teid();
|
|
uint64_t get_new_user_teid();
|
|
in_addr_t get_new_ue_ipv4();
|
|
|
|
bool m_running;
|
|
srslte::byte_buffer_pool *m_pool;
|
|
mme_gtpc *m_mme_gtpc;
|
|
|
|
|
|
bool m_sgi_up;
|
|
int m_sgi_if;
|
|
int m_sgi_sock;
|
|
|
|
bool m_s1u_up;
|
|
int m_s1u;
|
|
|
|
uint64_t m_next_ctrl_teid;
|
|
uint64_t m_next_user_teid;
|
|
|
|
sockaddr_in m_s1u_addr;
|
|
|
|
std::map<uint32_t,spgw_tunnel_ctx*> m_teid_to_tunnel_ctx; //Map control TEID to tunnel ctx. Usefull to get reply ctrl TEID, UE IP, etc.
|
|
std::map<in_addr_t,srslte::gtpc_f_teid_ie> m_ip_to_teid; //Map IP to User-plane TEID for downlink traffic
|
|
|
|
/*Logs*/
|
|
srslte::log_filter *m_spgw_log;
|
|
|
|
};
|
|
|
|
} // namespace srsepc
|
|
|
|
#endif // SGW_H
|