141 lines
4.0 KiB
C
141 lines
4.0 KiB
C
/*
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* Copyright (C) 2008 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <string.h>
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#include <errno.h>
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#include <byteswap.h>
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#include <ipxe/dhcp.h>
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#include <ipxe/dhcpopts.h>
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#include <ipxe/settings.h>
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#include <ipxe/device.h>
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#include <ipxe/netdevice.h>
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/** @file
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*
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* Network device configuration settings
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*
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*/
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/** Network device named settings */
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struct setting mac_setting __setting ( SETTING_NETDEV ) = {
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.name = "mac",
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.description = "MAC address",
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.type = &setting_type_hex,
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.tag = NETDEV_SETTING_TAG_MAC,
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};
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struct setting busid_setting __setting ( SETTING_NETDEV ) = {
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.name = "busid",
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.description = "Bus ID",
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.type = &setting_type_hex,
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.tag = NETDEV_SETTING_TAG_BUS_ID,
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};
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/**
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* Check applicability of network device setting
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*
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* @v settings Settings block
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* @v setting Setting
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* @ret applies Setting applies within this settings block
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*/
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static int netdev_applies ( struct settings *settings __unused,
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struct setting *setting ) {
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return ( IS_NETDEV_SETTING_TAG ( setting->tag ) ||
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dhcpopt_applies ( setting->tag ) );
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}
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/**
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* Store value of network device setting
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*
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* @v settings Settings block
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* @v setting Setting to store
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* @v data Setting data, or NULL to clear setting
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* @v len Length of setting data
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* @ret rc Return status code
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*/
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static int netdev_store ( struct settings *settings, struct setting *setting,
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const void *data, size_t len ) {
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struct net_device *netdev = container_of ( settings, struct net_device,
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settings.settings );
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if ( setting_cmp ( setting, &mac_setting ) == 0 ) {
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if ( len != netdev->ll_protocol->ll_addr_len )
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return -EINVAL;
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memcpy ( netdev->ll_addr, data, len );
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return 0;
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}
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if ( setting_cmp ( setting, &busid_setting ) == 0 )
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return -ENOTSUP;
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return generic_settings_store ( settings, setting, data, len );
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}
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/**
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* Fetch value of network device setting
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*
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* @v settings Settings block
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* @v setting Setting to fetch
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* @v data Setting data, or NULL to clear setting
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* @v len Length of setting data
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* @ret rc Return status code
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*/
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static int netdev_fetch ( struct settings *settings, struct setting *setting,
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void *data, size_t len ) {
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struct net_device *netdev = container_of ( settings, struct net_device,
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settings.settings );
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struct device_description *desc = &netdev->dev->desc;
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struct dhcp_netdev_desc dhcp_desc;
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if ( setting_cmp ( setting, &mac_setting ) == 0 ) {
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if ( len > netdev->ll_protocol->ll_addr_len )
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len = netdev->ll_protocol->ll_addr_len;
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memcpy ( data, netdev->ll_addr, len );
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return netdev->ll_protocol->ll_addr_len;
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}
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if ( setting_cmp ( setting, &busid_setting ) == 0 ) {
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dhcp_desc.type = desc->bus_type;
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dhcp_desc.vendor = htons ( desc->vendor );
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dhcp_desc.device = htons ( desc->device );
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if ( len > sizeof ( dhcp_desc ) )
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len = sizeof ( dhcp_desc );
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memcpy ( data, &dhcp_desc, len );
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return sizeof ( dhcp_desc );
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}
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return generic_settings_fetch ( settings, setting, data, len );
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}
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/**
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* Clear network device settings
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*
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* @v settings Settings block
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*/
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static void netdev_clear ( struct settings *settings ) {
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generic_settings_clear ( settings );
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}
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/** Network device configuration settings operations */
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struct settings_operations netdev_settings_operations = {
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.applies = netdev_applies,
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.store = netdev_store,
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.fetch = netdev_fetch,
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.clear = netdev_clear,
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};
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