srsLTE/srsepc/hdr/spgw/gtpu.h

92 lines
2.5 KiB
C++

/**
*
* \section COPYRIGHT
*
* Copyright 2013-2020 Software Radio Systems Limited
*
* By using this file, you agree to the terms and conditions set
* forth in the LICENSE file which can be found at the top level of
* the distribution.
*
*/
#ifndef SRSEPC_GTPU_H
#define SRSEPC_GTPU_H
#include "srsepc/hdr/spgw/spgw.h"
#include "srslte/asn1/gtpc.h"
#include "srslte/common/buffer_pool.h"
#include "srslte/common/logmap.h"
#include "srslte/interfaces/epc_interfaces.h"
#include "srslte/srslog/srslog.h"
#include <cstddef>
#include <queue>
namespace srsepc {
class spgw::gtpu : public gtpu_interface_gtpc
{
public:
gtpu();
virtual ~gtpu();
int init(spgw_args_t* args, spgw* spgw, gtpc_interface_gtpu* gtpc, srslte::log_ref gtpu_log);
void stop();
int init_sgi(spgw_args_t* args);
int init_s1u(spgw_args_t* args);
int get_sgi();
int get_s1u();
void handle_sgi_pdu(srslte::byte_buffer_t* msg);
void handle_s1u_pdu(srslte::byte_buffer_t* msg);
void send_s1u_pdu(srslte::gtp_fteid_t enb_fteid, srslte::byte_buffer_t* msg);
virtual in_addr_t get_s1u_addr();
virtual bool modify_gtpu_tunnel(in_addr_t ue_ipv4, srslte::gtp_fteid_t dw_user_fteid, uint32_t up_ctr_fteid);
virtual bool delete_gtpu_tunnel(in_addr_t ue_ipv4);
virtual bool delete_gtpc_tunnel(in_addr_t ue_ipv4);
virtual void send_all_queued_packets(srslte::gtp_fteid_t dw_user_fteid,
std::queue<srslte::byte_buffer_t*>& pkt_queue);
spgw* m_spgw;
gtpc_interface_gtpu* m_gtpc;
bool m_sgi_up;
int m_sgi;
bool m_s1u_up;
int m_s1u;
sockaddr_in m_s1u_addr;
std::map<in_addr_t, srslte::gtp_fteid_t> m_ip_to_usr_teid; // Map IP to User-plane TEID for downlink traffic
std::map<in_addr_t, uint32_t> m_ip_to_ctr_teid; // IP to control TEID map. Important to check if
// UE is attached without an active user-plane
// for downlink notifications.
srslog::basic_logger& m_logger = srslog::fetch_basic_logger("GTPU");
//:TODO: remove this once srslte common code loggers have been upgraded.
srslte::log_ref m_gtpu_log;
private:
srslte::byte_buffer_pool* m_pool;
};
inline int spgw::gtpu::get_sgi()
{
return m_sgi;
}
inline int spgw::gtpu::get_s1u()
{
return m_s1u;
}
inline in_addr_t spgw::gtpu::get_s1u_addr()
{
return m_s1u_addr.sin_addr.s_addr;
}
} // namespace srsepc
#endif // SRSEPC_GTPU_H