along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: device.c,v 1.1.2.19 2003/07/18 13:41:36 guus Exp $
+ $Id: device.c,v 1.1.2.20 2003/07/22 20:55:21 guus Exp $
*/
#include "system.h"
#include "route.h"
#include "utils.h"
-enum {
+typedef enum device_type_t {
DEVICE_TYPE_ETHERTAP,
DEVICE_TYPE_TUN,
DEVICE_TYPE_TAP,
-};
+} device_type_t;
int device_fd = -1;
-int device_type;
+device_type_t device_type;
char *device;
char *iface;
char ifrname[IFNAMSIZ];
int device_total_in = 0;
int device_total_out = 0;
-int setup_device(void)
+bool setup_device(void)
{
struct ifreq ifr;
if(device_fd < 0) {
logger(LOG_ERR, _("Could not open %s: %s"), device, strerror(errno));
- return -1;
+ return false;
}
#ifdef HAVE_TUNTAP
#endif
{
if(routing_mode == RMODE_ROUTER)
- overwrite_mac = 1;
+ overwrite_mac = true;
device_info = _("Linux ethertap device");
device_type = DEVICE_TYPE_ETHERTAP;
iface = rindex(device, '/') ? rindex(device, '/') + 1 : device;
logger(LOG_INFO, _("%s is a %s"), device, device_info);
- return 0;
+ return true;
}
void close_device(void)
close(device_fd);
}
-int read_packet(vpn_packet_t *packet)
+bool read_packet(vpn_packet_t *packet)
{
int lenin;
if(lenin <= 0) {
logger(LOG_ERR, _("Error while reading from %s %s: %s"),
device_info, device, strerror(errno));
- return -1;
+ return false;
}
packet->len = lenin + 10;
if(lenin <= 0) {
logger(LOG_ERR, _("Error while reading from %s %s: %s"),
device_info, device, strerror(errno));
- return -1;
+ return false;
}
packet->len = lenin;
if(lenin <= 0) {
logger(LOG_ERR, _("Error while reading from %s %s: %s"),
device_info, device, strerror(errno));
- return -1;
+ return false;
}
packet->len = lenin - 2;
ifdebug(TRAFFIC) logger(LOG_DEBUG, _("Read packet of %d bytes from %s"), packet->len,
device_info);
- return 0;
+ return true;
}
-int write_packet(vpn_packet_t *packet)
+bool write_packet(vpn_packet_t *packet)
{
cp();
if(write(device_fd, packet->data + 10, packet->len - 10) < 0) {
logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
strerror(errno));
- return -1;
+ return false;
}
break;
case DEVICE_TYPE_TAP:
if(write(device_fd, packet->data, packet->len) < 0) {
logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
strerror(errno));
- return -1;
+ return false;
}
break;
case DEVICE_TYPE_ETHERTAP:
if(write(device_fd, packet->data - 2, packet->len + 2) < 0) {
logger(LOG_ERR, _("Can't write to %s %s: %s"), device_info, device,
strerror(errno));
- return -1;
+ return false;
}
break;
}
device_total_out += packet->len;
- return 0;
+ return true;
}
void dump_device_stats(void)