/*
* Copyright (C) 2008 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.
*/
#include <string.h>
#include <errno.h>
#include <gpxe/dhcp.h>
#include <gpxe/settings.h>
#include <gpxe/netdevice.h>
/** @file
*
* Network device configuration settings
*
*/
/** Network device named settings */
struct setting mac_setting __setting = {
.name = "mac",
.description = "MAC address",
.type = &setting_type_hex,
};
/**
* Store value of network device setting
*
* @v settings Settings block
* @v setting Setting to store
* @v data Setting data, or NULL to clear setting
* @v len Length of setting data
* @ret rc Return status code
*/
static int netdev_store ( struct settings *settings, struct setting *setting,
const void *data, size_t len ) {
struct net_device *netdev = container_of ( settings, struct net_device,
settings.settings );
if ( setting_cmp ( setting, &mac_setting ) == 0 ) {
if ( len != netdev->ll_protocol->ll_addr_len )
return -EINVAL;
memcpy ( netdev->ll_addr, data, len );
return 0;
} else {
return simple_settings_store ( settings, setting, data, len );
}
}
/**
* Fetch value of network device setting
*
* @v settings Settings block
* @v setting Setting to fetch
* @v data Setting data, or NULL to clear setting
* @v len Length of setting data
* @ret rc Return status code
*/
static int netdev_fetch ( struct settings *settings, struct setting *setting,
void *data, size_t len ) {
struct net_device *netdev = container_of ( settings, struct net_device,
settings.settings );
if ( setting_cmp ( setting, &mac_setting ) == 0 ) {
if ( len > netdev->ll_protocol->ll_addr_len )
len = netdev->ll_protocol->ll_addr_len;
memcpy ( data, netdev->ll_addr, len );
return netdev->ll_protocol->ll_addr_len;
} else {
return simple_settings_fetch ( settings, setting, data, len );
}
}
/** Network device configuration settings operations */
struct settings_operations netdev_settings_operations = {
.store = netdev_store,
.fetch = netdev_fetch,
};
