Adding socket for S1-U interface.

master
Pedro Alvarez 7 years ago
parent f9b2c6434a
commit 796fba6f55

@ -21,5 +21,6 @@ mcc = 001
mnc = 01 mnc = 01
mme_bind_addr = 127.0.0.0/24 mme_bind_addr = 127.0.0.0/24
[spgw]
s1u_bind_addr=127.0.0.1

@ -42,8 +42,10 @@
namespace srsepc{ namespace srsepc{
const uint16_t GTPU_RX_PORT = 2152;
typedef struct { typedef struct {
std::string gtpc_bind_addr; std::string gtpu_bind_addr;
} spgw_args_t; } spgw_args_t;
@ -63,14 +65,19 @@ private:
virtual ~spgw(); virtual ~spgw();
static spgw *m_instance; static spgw *m_instance;
srslte::error_t init_sgi_if(); srslte::error_t init_sgi_if(spgw_args_t *args);
srslte::error_t init_s1u(spgw_args_t *args);
bool m_running; bool m_running;
srslte::byte_buffer_pool *m_pool; srslte::byte_buffer_pool *m_pool;
bool m_if_up; bool m_sgi_up;
int m_sgi_if; int m_sgi_if;
int m_sgi_sock; int m_sgi_sock;
bool m_s1u_up;
int m_s1u;
/*Logs*/ /*Logs*/
srslte::log_filter *m_spgw_log; srslte::log_filter *m_spgw_log;

@ -41,7 +41,8 @@ boost::mutex spgw_instance_mutex;
spgw::spgw(): spgw::spgw():
m_running(false), m_running(false),
m_if_up(false) m_sgi_up(false),
m_s1u_up(false)
{ {
m_pool = srslte::byte_buffer_pool::get_instance(); m_pool = srslte::byte_buffer_pool::get_instance();
return; return;
@ -75,11 +76,26 @@ spgw::cleanup(void)
int int
spgw::init(spgw_args_t* args, srslte::log_filter *spgw_log) spgw::init(spgw_args_t* args, srslte::log_filter *spgw_log)
{ {
srslte::error_t err;
//Init log //Init log
m_spgw_log = spgw_log; m_spgw_log = spgw_log;
//Init Si interface //Init SGi interface
init_sgi_if(); err = init_sgi_if(args);
if (err != srslte::ERROR_NONE)
{
m_spgw_log->console("Could not initialize the SGi interface.\n");
return -1;
}
//Init S1-U
err = init_s1u(args);
if (err != srslte::ERROR_NONE)
{
m_spgw_log->console("Could not initialize the S1-U interface.\n");
return -1;
}
m_spgw_log->info("SP-GW Initialized.\n"); m_spgw_log->info("SP-GW Initialized.\n");
m_spgw_log->console("SP-GW Initialized.\n"); m_spgw_log->console("SP-GW Initialized.\n");
return 0; return 0;
@ -94,12 +110,17 @@ spgw::stop()
thread_cancel(); thread_cancel();
wait_thread_finish(); wait_thread_finish();
//Clean up interface //Clean up SGi interface
if(m_if_up) if(m_sgi_up)
{ {
close(m_sgi_if); close(m_sgi_if);
close(m_sgi_sock); close(m_sgi_sock);
} }
//Clean up S1-U socket
if(m_s1u_up)
{
close(m_s1u);
}
} }
return; return;
} }
@ -117,12 +138,12 @@ spgw::run_thread()
} }
srslte::error_t srslte::error_t
spgw::init_sgi_if() spgw::init_sgi_if(spgw_args_t *args)
{ {
char dev[IFNAMSIZ] = "srs_spgw_sgi"; char dev[IFNAMSIZ] = "srs_spgw_sgi";
struct ifreq ifr; struct ifreq ifr;
if(m_if_up) if(m_sgi_up)
{ {
return(srslte::ERROR_ALREADY_STARTED); return(srslte::ERROR_ALREADY_STARTED);
} }
@ -133,7 +154,7 @@ spgw::init_sgi_if()
m_spgw_log->info("TUN file descriptor = %d\n", m_sgi_if); m_spgw_log->info("TUN file descriptor = %d\n", m_sgi_if);
if(m_sgi_if < 0) if(m_sgi_if < 0)
{ {
m_spgw_log->debug("Failed to open TUN device: %s\n", strerror(errno)); m_spgw_log->error("Failed to open TUN device: %s\n", strerror(errno));
return(srslte::ERROR_CANT_START); return(srslte::ERROR_CANT_START);
} }
@ -142,7 +163,7 @@ spgw::init_sgi_if()
strncpy(ifr.ifr_ifrn.ifrn_name, dev, IFNAMSIZ); strncpy(ifr.ifr_ifrn.ifrn_name, dev, IFNAMSIZ);
if(ioctl(m_sgi_if, TUNSETIFF, &ifr) < 0) if(ioctl(m_sgi_if, TUNSETIFF, &ifr) < 0)
{ {
m_spgw_log->debug("Failed to set TUN device name: %s\n", strerror(errno)); m_spgw_log->error("Failed to set TUN device name: %s\n", strerror(errno));
close(m_sgi_if); close(m_sgi_if);
return(srslte::ERROR_CANT_START); return(srslte::ERROR_CANT_START);
} }
@ -151,20 +172,45 @@ spgw::init_sgi_if()
m_sgi_sock = socket(AF_INET, SOCK_DGRAM, 0); m_sgi_sock = socket(AF_INET, SOCK_DGRAM, 0);
if(ioctl(m_sgi_sock, SIOCGIFFLAGS, &ifr) < 0) if(ioctl(m_sgi_sock, SIOCGIFFLAGS, &ifr) < 0)
{ {
m_spgw_log->debug("Failed to bring up socket: %s\n", strerror(errno)); m_spgw_log->error("Failed to bring up socket: %s\n", strerror(errno));
close(m_sgi_if); close(m_sgi_if);
return(srslte::ERROR_CANT_START); return(srslte::ERROR_CANT_START);
} }
ifr.ifr_flags |= IFF_UP | IFF_RUNNING; ifr.ifr_flags |= IFF_UP | IFF_RUNNING;
if(ioctl(m_sgi_sock, SIOCSIFFLAGS, &ifr) < 0) if(ioctl(m_sgi_sock, SIOCSIFFLAGS, &ifr) < 0)
{ {
m_spgw_log->debug("Failed to set socket flags: %s\n", strerror(errno)); m_spgw_log->error("Failed to set socket flags: %s\n", strerror(errno));
close(m_sgi_if); close(m_sgi_if);
return(srslte::ERROR_CANT_START); return(srslte::ERROR_CANT_START);
} }
m_if_up = true; m_sgi_up = true;
return(srslte::ERROR_NONE); return(srslte::ERROR_NONE);
} }
srslte::error_t
spgw::init_s1u(spgw_args_t *args)
{
//Open S1-U socket
m_s1u = socket(AF_INET,SOCK_DGRAM,0);
if (m_s1u == -1)
{
m_spgw_log->error("Failed to open socket: %s\n", strerror(errno));
return srslte::ERROR_CANT_START;
}
m_s1u_up = true;
//Bind the socket
struct sockaddr_in servaddr;
servaddr.sin_family = AF_INET;
servaddr.sin_addr.s_addr=inet_addr(args->gtpu_bind_addr.c_str());
servaddr.sin_port=htons(GTPU_RX_PORT);
if (bind(m_s1u,(struct sockaddr *)&servaddr,sizeof(struct sockaddr_in))) {
m_spgw_log->error("Failed to bind socket: %s\n", strerror(errno));
return srslte::ERROR_CANT_START;
}
return srslte::ERROR_NONE;
}
} //namespace srsepc } //namespace srsepc

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