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/*
* Copyright (C) 2006 Michael Brown <mbrown@fensystems.co.uk>.
*
* 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 the Free Software Foundation; either version 2 of the
* License, or any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
FILE_LICENCE ( GPL2_OR_LATER );
#include <stdint.h>
#include <errno.h>
#include <gpxe/iobuf.h>
#include <gpxe/netdevice.h>
/** @file
*
* Null network device
*
*/
static int null_open ( struct net_device *netdev __unused ) {
return -ENODEV;
};
static void null_close ( struct net_device *netdev __unused ) {
/* Do nothing */
};
static int null_transmit ( struct net_device *netdev __unused,
struct io_buffer *iobuf __unused ) {
return -ENODEV;
};
static void null_poll ( struct net_device *netdev __unused ) {
/* Do nothing */
}
static void null_irq ( struct net_device *netdev __unused,
int enable __unused ) {
/* Do nothing */
}
struct net_device_operations null_netdev_operations = {
.open = null_open,
.close = null_close,
.transmit = null_transmit,
.poll = null_poll,
.irq = null_irq,
};
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