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159 lines
3.3 KiB
C++
159 lines
3.3 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2017 Software Radio Systems Limited
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*
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* \section LICENSE
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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 <iostream>
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#include <boost/thread/mutex.hpp>
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <netinet/in.h>
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#include <sys/socket.h>
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#include <linux/if.h>
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#include <linux/if_tun.h>
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#include "spgw/spgw.h"
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namespace srsepc{
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spgw* spgw::m_instance = NULL;
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boost::mutex spgw_instance_mutex;
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spgw::spgw():
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m_running(false)
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{
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m_pool = srslte::byte_buffer_pool::get_instance();
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return;
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}
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spgw::~spgw()
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{
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return;
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}
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spgw*
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spgw::get_instance(void)
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{
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boost::mutex::scoped_lock lock(spgw_instance_mutex);
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if(NULL == m_instance) {
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m_instance = new spgw();
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}
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return(m_instance);
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}
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void
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spgw::cleanup(void)
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{
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boost::mutex::scoped_lock lock(spgw_instance_mutex);
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if(NULL != m_instance) {
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delete m_instance;
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m_instance = NULL;
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}
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}
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int
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spgw::init(spgw_args_t* args, srslte::log_filter *spgw_log)
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{
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//Init log
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m_spgw_log = spgw_log;
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//Init Si interface
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init_sgi_if();
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m_spgw_log->info("SP-GW Initialized.\n");
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m_spgw_log->console("SP-GW Initialized.\n");
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return 0;
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}
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void
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spgw::stop()
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{
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if(m_running)
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{
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m_running = false;
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thread_cancel();
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wait_thread_finish();
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}
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return;
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}
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void
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spgw::run_thread()
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{
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//Mark the thread as running
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m_running=true;
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while (m_running)
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{
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sleep(1);
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}
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return;
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}
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srslte::error_t
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spgw::init_sgi_if()
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{
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char dev[IFNAMSIZ] = "srs_spgw_sgi";
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struct ifreq ifr;
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// Construct the TUN device
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m_sgi_if = open("/dev/net/tun", O_RDWR);
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m_spgw_log->info("TUN file descriptor = %d\n", m_sgi_if);
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if(m_sgi_if < 0)
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{
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m_spgw_log->debug("Failed to open TUN device: %s\n", strerror(errno));
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return(srslte::ERROR_CANT_START);
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}
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memset(&ifr, 0, sizeof(ifr));
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ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
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strncpy(ifr.ifr_ifrn.ifrn_name, dev, IFNAMSIZ);
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if(ioctl(m_sgi_if, TUNSETIFF, &ifr) < 0)
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{
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m_spgw_log->debug("Failed to set TUN device name: %s\n", strerror(errno));
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close(m_sgi_if);
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return(srslte::ERROR_CANT_START);
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}
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// Bring up the interface
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m_sgi_sock = socket(AF_INET, SOCK_DGRAM, 0);
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if(ioctl(m_sgi_sock, SIOCGIFFLAGS, &ifr) < 0)
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{
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m_spgw_log->debug("Failed to bring up socket: %s\n", strerror(errno));
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close(m_sgi_if);
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return(srslte::ERROR_CANT_START);
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}
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ifr.ifr_flags |= IFF_UP | IFF_RUNNING;
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if(ioctl(m_sgi_sock, SIOCSIFFLAGS, &ifr) < 0)
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{
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m_spgw_log->debug("Failed to set socket flags: %s\n", strerror(errno));
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close(m_sgi_if);
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return(srslte::ERROR_CANT_START);
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}
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//if_up = true;
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return(srslte::ERROR_NONE);
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}
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} //namespace srsepc
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