mirror of https://github.com/PentHertz/srsLTE.git
123 lines
4.0 KiB
C++
123 lines
4.0 KiB
C++
/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include <map>
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#include <string.h>
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#include "common_enb.h"
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#include "srslte/common/buffer_pool.h"
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#include "srslte/common/logmap.h"
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#include "srslte/common/threads.h"
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#include "srslte/interfaces/enb_interfaces.h"
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#include "srslte/srslte.h"
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#ifndef SRSENB_GTPU_H
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#define SRSENB_GTPU_H
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namespace srsenb {
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class gtpu final : public gtpu_interface_rrc, public gtpu_interface_pdcp
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{
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public:
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gtpu();
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int init(std::string gtp_bind_addr_,
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std::string mme_addr_,
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std::string m1u_multiaddr_,
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std::string m1u_if_addr_,
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pdcp_interface_gtpu* pdcp_,
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stack_interface_gtpu_lte* stack_,
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bool enable_mbsfn = false);
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void stop();
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// gtpu_interface_rrc
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void add_bearer(uint16_t rnti, uint32_t lcid, uint32_t addr, uint32_t teid_out, uint32_t* teid_in) override;
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void rem_bearer(uint16_t rnti, uint32_t lcid) override;
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void rem_user(uint16_t rnti) override;
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// gtpu_interface_pdcp
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void write_pdu(uint16_t rnti, uint32_t lcid, srslte::unique_byte_buffer_t pdu) override;
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// stack interface
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void handle_gtpu_s1u_rx_packet(srslte::unique_byte_buffer_t pdu, const sockaddr_in& addr);
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void handle_gtpu_m1u_rx_packet(srslte::unique_byte_buffer_t pdu, const sockaddr_in& addr);
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private:
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static const int GTPU_PORT = 2152;
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srslte::byte_buffer_pool* pool = nullptr;
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stack_interface_gtpu_lte* stack = nullptr;
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bool enable_mbsfn = false;
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std::string gtp_bind_addr;
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std::string mme_addr;
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srsenb::pdcp_interface_gtpu* pdcp = nullptr;
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srslte::log_ref gtpu_log;
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// Class to create
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class m1u_handler
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{
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public:
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explicit m1u_handler(gtpu* gtpu_) : parent(gtpu_) {}
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~m1u_handler();
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m1u_handler(const m1u_handler&) = delete;
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m1u_handler(m1u_handler&&) = delete;
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m1u_handler& operator=(const m1u_handler&) = delete;
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m1u_handler& operator=(m1u_handler&&) = delete;
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bool init(std::string m1u_multiaddr_, std::string m1u_if_addr_);
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void handle_rx_packet(srslte::unique_byte_buffer_t pdu, const sockaddr_in& addr);
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private:
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gtpu* parent = nullptr;
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pdcp_interface_gtpu* pdcp = nullptr;
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srslte::log_ref gtpu_log;
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std::string m1u_multiaddr;
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std::string m1u_if_addr;
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bool initiated = false;
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int m1u_sd = -1;
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int lcid_counter = 0;
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};
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m1u_handler m1u;
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typedef struct {
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uint32_t teids_in[SRSENB_N_RADIO_BEARERS];
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uint32_t teids_out[SRSENB_N_RADIO_BEARERS];
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uint32_t spgw_addrs[SRSENB_N_RADIO_BEARERS];
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} bearer_map;
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std::map<uint16_t, bearer_map> rnti_bearers;
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// Socket file descriptor
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int fd = -1;
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void echo_response(in_addr_t addr, in_port_t port, uint16_t seq);
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/****************************************************************************
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* TEID to RNIT/LCID helper functions
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***************************************************************************/
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void teidin_to_rntilcid(uint32_t teidin, uint16_t* rnti, uint16_t* lcid);
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void rntilcid_to_teidin(uint16_t rnti, uint16_t lcid, uint32_t* teidin);
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};
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} // namespace srsenb
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#endif // SRSENB_GTPU_H
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