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123 lines
3.7 KiB
C++
123 lines
3.7 KiB
C++
/**
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* Copyright 2013-2022 Software Radio Systems Limited
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*
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* This file is part of srsRAN.
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*
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* srsRAN 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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* srsRAN 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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#ifndef SRSUE_GW_H
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#define SRSUE_GW_H
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#include "gw_metrics.h"
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#include "srsran/common/buffer_pool.h"
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#include "srsran/common/common.h"
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#include "srsran/common/interfaces_common.h"
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#include "srsran/common/threads.h"
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#include "srsran/interfaces/ue_gw_interfaces.h"
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#include "srsran/srslog/srslog.h"
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#include "tft_packet_filter.h"
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#include <atomic>
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#include <mutex>
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#include <net/if.h>
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#include <netinet/in.h>
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namespace srsue {
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class stack_interface_gw;
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struct gw_args_t {
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struct log_args_t {
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std::string gw_level;
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int gw_hex_limit;
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} log;
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std::string netns;
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std::string tun_dev_name;
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std::string tun_dev_netmask;
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};
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class gw : public gw_interface_stack, public srsran::thread
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{
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public:
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gw(srslog::basic_logger& logger_);
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~gw();
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int init(const gw_args_t& args_, stack_interface_gw* stack);
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void stop();
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void get_metrics(gw_metrics_t& m, const uint32_t nof_tti);
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// PDCP interface
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void write_pdu(uint32_t lcid, srsran::unique_byte_buffer_t pdu);
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void write_pdu_mch(uint32_t lcid, srsran::unique_byte_buffer_t pdu);
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// NAS interface
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int setup_if_addr(uint32_t eps_bearer_id, uint8_t pdn_type, uint32_t ip_addr, uint8_t* ipv6_if_addr, char* err_str);
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int deactivate_eps_bearer(const uint32_t eps_bearer_id);
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int apply_traffic_flow_template(const uint8_t& eps_bearer_id, const LIBLTE_MME_TRAFFIC_FLOW_TEMPLATE_STRUCT* tft);
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void set_test_loop_mode(const test_loop_mode_state_t mode, const uint32_t ip_pdu_delay_ms);
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// RRC interface
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void add_mch_port(uint32_t lcid, uint32_t port);
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bool is_running();
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private:
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static const int GW_THREAD_PRIO = -1;
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stack_interface_gw* stack = nullptr;
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gw_args_t args = {};
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std::atomic<bool> running = {false};
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std::atomic<bool> run_enable = {false};
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int32_t netns_fd = 0;
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int32_t tun_fd = 0;
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struct ifreq ifr = {};
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int32_t sock = 0;
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std::atomic<bool> if_up = {false};
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static const int NOT_ASSIGNED = -1;
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int32_t default_eps_bearer_id = NOT_ASSIGNED;
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std::mutex gw_mutex;
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srslog::basic_logger& logger;
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uint32_t current_ip_addr = 0;
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uint8_t current_if_id[8];
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uint32_t ul_tput_bytes = 0;
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uint32_t dl_tput_bytes = 0;
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std::chrono::high_resolution_clock::time_point metrics_tp; // stores time when last metrics have been taken
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void run_thread();
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int init_if(char* err_str);
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int setup_if_addr4(uint32_t ip_addr, char* err_str);
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int setup_if_addr6(uint8_t* ipv6_if_id, char* err_str);
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bool find_ipv6_addr(struct in6_addr* in6_out);
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void del_ipv6_addr(struct in6_addr* in6p);
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// MBSFN
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int mbsfn_sock_fd = 0; // Sink UDP socket file descriptor
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struct sockaddr_in mbsfn_sock_addr = {}; // Target address
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uint32_t mbsfn_ports[SRSRAN_N_MCH_LCIDS] = {}; // Target ports for MBSFN data
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// TFT
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tft_pdu_matcher tft_matcher;
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};
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} // namespace srsue
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#endif // SRSUE_GW_H
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