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srsLTE
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Starting to add TUN if for SGi interface

This commit is contained in:
Pedro Alvarez 2017-11-17 16:04:42 +00:00
parent b6d0fcfdbe
commit eac3ee26c1
2 changed files with 61 additions and 1 deletions
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4
srsepc/hdr/spgw/spgw.h
View File

@ -63,9 +63,13 @@ private:
virtual ~spgw();
static spgw *m_instance;
srslte::error_t init_sgi_if();
bool m_running;
srslte::byte_buffer_pool *m_pool;
int m_sgi_if;
int m_sgi_sock;
/*Logs*/
srslte::log_filter *m_spgw_log;

58
srsepc/src/spgw/spgw.cc
View File

@ -26,6 +26,12 @@
#include <iostream>
#include <boost/thread/mutex.hpp>
#include <fcntl.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <linux/if.h>
#include <linux/if_tun.h>
#include "spgw/spgw.h"
namespace srsepc{
@ -68,8 +74,11 @@ spgw::cleanup(void)
int
spgw::init(spgw_args_t* args, srslte::log_filter *spgw_log)
{
//Init log
m_spgw_log = spgw_log;
//Init Si interface
init_sgi_if();
m_spgw_log->info("SP-GW Initialized.\n");
m_spgw_log->console("SP-GW Initialized.\n");
return 0;
@ -99,4 +108,51 @@ spgw::run_thread()
return;
}
srslte::error_t
spgw::init_sgi_if()
{
char dev[IFNAMSIZ] = "srs_spgw_sgi";
struct ifreq ifr;
// Construct the TUN device
m_sgi_if = open("/dev/net/tun", O_RDWR);
m_spgw_log->info("TUN file descriptor = %d\n", m_sgi_if);
if(m_sgi_if < 0)
{
m_spgw_log->debug("Failed to open TUN device: %s\n", strerror(errno));
return(srslte::ERROR_CANT_START);
}
memset(&ifr, 0, sizeof(ifr));
ifr.ifr_flags = IFF_TUN | IFF_NO_PI;
strncpy(ifr.ifr_ifrn.ifrn_name, dev, IFNAMSIZ);
if(ioctl(m_sgi_if, TUNSETIFF, &ifr) < 0)
{
m_spgw_log->debug("Failed to set TUN device name: %s\n", strerror(errno));
close(m_sgi_if);
return(srslte::ERROR_CANT_START);
}
// Bring up the interface
m_sgi_sock = socket(AF_INET, SOCK_DGRAM, 0);
if(ioctl(m_sgi_sock, SIOCGIFFLAGS, &ifr) < 0)
{
m_spgw_log->debug("Failed to bring up socket: %s\n", strerror(errno));
close(m_sgi_if);
return(srslte::ERROR_CANT_START);
}
ifr.ifr_flags |= IFF_UP | IFF_RUNNING;
if(ioctl(m_sgi_sock, SIOCSIFFLAGS, &ifr) < 0)
{
m_spgw_log->debug("Failed to set socket flags: %s\n", strerror(errno));
close(m_sgi_if);
return(srslte::ERROR_CANT_START);
}
//if_up = true;
return(srslte::ERROR_NONE);
}
} //namespace srsepc