/*
device.c -- Interaction with Linux ethertap and tun/tap device
- Copyright (C) 2001 Ivo Timmermans <itimmermans@bigfoot.com>,
- 2001 Guus Sliepen <guus@sliepen.warande.net>
+ Copyright (C) 2001-2002 Ivo Timmermans <itimmermans@bigfoot.com>,
+ 2001-2002 Guus Sliepen <guus@sliepen.warande.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- $Id: device.c,v 1.1.2.4 2001/10/31 12:50:24 guus Exp $
+ $Id: device.c,v 1.1.2.6 2002/02/11 12:33:01 guus Exp $
*/
#include "config.h"
int device_total_in = 0;
int device_total_out = 0;
-subnet_t mymac;
+extern subnet_t mymac;
/*
open the local ethertap device
device = DEFAULT_DEVICE;
if(!get_config_string(lookup_config(config_tree, "Interface"), &interface))
+#ifdef HAVE_TUNTAP
interface = netname;
+#else
+ interface = rindex(device, '/')?rindex(device, '/')+1:device;
+#endif
cp
if((device_fd = open(device, O_RDWR | O_NONBLOCK)) < 0)
{
}
else /* ethertap */
{
- struct iovec vector[2] = {{&packet->len, 2}, {packet->data, MTU}};
-
- if((lenin = readv(device_fd, vector, 2)) <= 0)
+ if((lenin = read(device_fd, packet->data - 2, MTU + 2)) <= 0)
{
syslog(LOG_ERR, _("Error while reading from %s %s: %m"), device_info, device);
return -1;
}
else/* ethertap */
{
- struct iovec vector[2] = {{&packet->len, 2}, {packet->data, MTU}};
-
- if(writev(device_fd, vector, 2) < 0)
+ *(short int *)(packet->data - 2) = packet->len;
+ if(write(device_fd, packet->data - 2, packet->len + 2) < 0)
{
syslog(LOG_ERR, _("Can't write to %s %s: %m"), device_info, device);
return -1;