mirror of https://github.com/PentHertz/srsLTE.git
129 lines
3.9 KiB
C++
129 lines
3.9 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.
|
|
*
|
|
*/
|
|
|
|
#include <map>
|
|
#include <string.h>
|
|
|
|
#include "common_enb.h"
|
|
#include "srslte/common/buffer_pool.h"
|
|
#include "srslte/common/logmap.h"
|
|
#include "srslte/common/threads.h"
|
|
#include "srslte/interfaces/enb_interfaces.h"
|
|
#include "srslte/srslte.h"
|
|
|
|
#ifndef SRSENB_GTPU_H
|
|
#define SRSENB_GTPU_H
|
|
|
|
namespace srsenb {
|
|
|
|
class gtpu final : public gtpu_interface_rrc, public gtpu_interface_pdcp
|
|
{
|
|
public:
|
|
gtpu();
|
|
|
|
int init(std::string gtp_bind_addr_,
|
|
std::string mme_addr_,
|
|
std::string m1u_multiaddr_,
|
|
std::string m1u_if_addr_,
|
|
pdcp_interface_gtpu* pdcp_,
|
|
stack_interface_gtpu_lte* stack_,
|
|
bool enable_mbsfn = false);
|
|
void stop();
|
|
|
|
// gtpu_interface_rrc
|
|
uint32_t add_bearer(uint16_t rnti, uint32_t lcid, uint32_t addr, uint32_t teid_out) override;
|
|
void rem_bearer(uint16_t rnti, uint32_t lcid) override;
|
|
void mod_bearer_rnti(uint16_t old_rnti, uint16_t new_rnti) override;
|
|
void rem_user(uint16_t rnti) override;
|
|
|
|
// gtpu_interface_pdcp
|
|
void write_pdu(uint16_t rnti, uint32_t lcid, srslte::unique_byte_buffer_t pdu) override;
|
|
|
|
// stack interface
|
|
void handle_gtpu_s1u_rx_packet(srslte::unique_byte_buffer_t pdu, const sockaddr_in& addr);
|
|
void handle_gtpu_m1u_rx_packet(srslte::unique_byte_buffer_t pdu, const sockaddr_in& addr);
|
|
|
|
private:
|
|
static const int GTPU_PORT = 2152;
|
|
|
|
srslte::byte_buffer_pool* pool = nullptr;
|
|
stack_interface_gtpu_lte* stack = nullptr;
|
|
|
|
bool enable_mbsfn = false;
|
|
std::string gtp_bind_addr;
|
|
std::string mme_addr;
|
|
srsenb::pdcp_interface_gtpu* pdcp = nullptr;
|
|
srslte::log_ref gtpu_log;
|
|
|
|
// Class to create
|
|
class m1u_handler
|
|
{
|
|
public:
|
|
explicit m1u_handler(gtpu* gtpu_) : parent(gtpu_) {}
|
|
~m1u_handler();
|
|
m1u_handler(const m1u_handler&) = delete;
|
|
m1u_handler(m1u_handler&&) = delete;
|
|
m1u_handler& operator=(const m1u_handler&) = delete;
|
|
m1u_handler& operator=(m1u_handler&&) = delete;
|
|
bool init(std::string m1u_multiaddr_, std::string m1u_if_addr_);
|
|
void handle_rx_packet(srslte::unique_byte_buffer_t pdu, const sockaddr_in& addr);
|
|
|
|
private:
|
|
gtpu* parent = nullptr;
|
|
pdcp_interface_gtpu* pdcp = nullptr;
|
|
srslte::log_ref gtpu_log;
|
|
std::string m1u_multiaddr;
|
|
std::string m1u_if_addr;
|
|
|
|
bool initiated = false;
|
|
int m1u_sd = -1;
|
|
int lcid_counter = 0;
|
|
};
|
|
m1u_handler m1u;
|
|
|
|
typedef struct {
|
|
uint32_t teids_in[SRSENB_N_RADIO_BEARERS];
|
|
uint32_t teids_out[SRSENB_N_RADIO_BEARERS];
|
|
uint32_t spgw_addrs[SRSENB_N_RADIO_BEARERS];
|
|
} bearer_map;
|
|
std::map<uint16_t, bearer_map> rnti_bearers;
|
|
|
|
typedef struct {
|
|
uint16_t rnti;
|
|
uint16_t lcid;
|
|
} rnti_lcid_t;
|
|
std::map<uint32_t, rnti_lcid_t> teidin_to_rntilcid_map;
|
|
|
|
// Tx sequence number for signaling messages
|
|
uint32_t tx_seq = 0;
|
|
|
|
// Socket file descriptor
|
|
int fd = -1;
|
|
|
|
void echo_response(in_addr_t addr, in_port_t port, uint16_t seq);
|
|
void error_indication(in_addr_t addr, in_port_t port, uint32_t err_teid);
|
|
|
|
/****************************************************************************
|
|
* TEID to RNIT/LCID helper functions
|
|
***************************************************************************/
|
|
uint32_t next_teid_in = 0;
|
|
uint32_t allocate_teidin(uint16_t rnti, uint16_t lcid);
|
|
void free_teidin(uint16_t rnti, uint16_t lcid);
|
|
void free_teidin(uint16_t rnti);
|
|
rnti_lcid_t teidin_to_rntilcid(uint32_t teidin);
|
|
uint32_t rntilcid_to_teidin(uint16_t rnti, uint16_t lcid);
|
|
};
|
|
|
|
} // namespace srsenb
|
|
|
|
#endif // SRSENB_GTPU_H
|