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63 lines
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C++

/**
*
* \section COPYRIGHT
*
* Copyright 2013-2021 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 SRSRAN_ENB_GTPU_INTERFACES_H
#define SRSRAN_ENB_GTPU_INTERFACES_H
#include "srsran/adt/expected.h"
#include "srsran/common/byte_buffer.h"
namespace srsenb {
struct gtpu_args_t {
std::string gtp_bind_addr;
std::string mme_addr;
std::string embms_m1u_multiaddr;
std::string embms_m1u_if_addr;
bool embms_enable = false;
uint32_t indirect_tunnel_timeout_msec = 0;
};
// GTPU interface for PDCP
class gtpu_interface_pdcp
{
public:
virtual void write_pdu(uint16_t rnti, uint32_t bearer_id, srsran::unique_byte_buffer_t pdu) = 0;
};
// GTPU interface for RRC
class gtpu_interface_rrc
{
public:
struct bearer_props {
bool forward_from_teidin_present = false;
bool flush_before_teidin_present = false;
uint32_t forward_from_teidin = 0;
uint32_t flush_before_teidin = 0;
};
virtual srsran::expected<uint32_t> add_bearer(uint16_t rnti,
uint32_t eps_bearer_id,
uint32_t addr,
uint32_t teid_out,
uint32_t& addr_in,
const bearer_props* props = nullptr) = 0;
virtual void set_tunnel_status(uint32_t teidin, bool dl_active) = 0;
virtual void rem_bearer(uint16_t rnti, uint32_t eps_bearer_id) = 0;
virtual void mod_bearer_rnti(uint16_t old_rnti, uint16_t new_rnti) = 0;
virtual void rem_user(uint16_t rnti) = 0;
};
} // namespace srsenb
#endif // SRSRAN_ENB_GTPU_INTERFACES_H