confnet.c

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/*
 * Copyright (C) 2001-2006 by egnite Software GmbH. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE
 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * For additional information see http://www.ethernut.de/
 *
 */

/*
 * $Log$
 * Revision 1.9  2009/03/05 22:16:57  freckle
 * use __NUT_EMULATION instead of __APPLE__, __linux__, or __CYGWIN__
 *
 * Revision 1.8  2006/05/25 09:18:28  haraldkipp
 * API documentation updated and corrected.
 *
 * Revision 1.7  2006/01/23 17:26:18  haraldkipp
 * Platform independant routines added, which provide generic access to
 * non-volatile memory.
 *
 * Revision 1.6  2005/10/04 05:37:34  hwmaier
 * Removed preprocessor warning message for AT90CAN128 MCU as this device is now supported by avr-libc.
 *
 * Revision 1.5  2005/07/26 15:49:59  haraldkipp
 * Cygwin support added.
 *
 * Revision 1.4  2005/02/10 07:06:50  hwmaier
 * Changes to incorporate support for AT90CAN128 CPU
 *
 * Revision 1.3  2004/04/07 12:13:58  haraldkipp
 * Matthias Ringwald's *nix emulation added
 *
 * Revision 1.2  2003/07/13 19:03:06  haraldkipp
 * Make empty MAC broadcast.
 *
 * Revision 1.1.1.1  2003/05/09 14:41:27  haraldkipp
 * Initial using 3.2.1
 *
 * Revision 1.2  2003/05/06 18:22:48  harald
 * EEPROM corruption fixed
 *
 * Revision 1.1  2003/02/04 18:15:26  harald
 * Version 3 released
 *
 */

#include <string.h>
#include <arpa/inet.h>
#include <netinet/if_ether.h>
#include <sys/confnet.h>
#include <dev/nvmem.h>


CONFNET confnet;

int NutNetLoadConfig(CONST char *name)
{
#ifdef CONFNET_HARDCODED

    memset(&confnet, 0, sizeof(CONFNET));
    memcpy(confnet.cdn_mac, ether_aton(CONFNET_VIRGIN_MAC), sizeof(confnet.cdn_mac));
    confnet.cdn_cip_addr = inet_addr(CONFNET_VIRGIN_IP);
    confnet.cdn_ip_mask = inet_addr(CONFNET_VIRGIN_NETMASK);
    confnet.cdn_gateway = inet_addr(CONFNET_VIRGIN_GATE);

    return 0;

#else /* CONFNET_HARDCODED */

#ifndef __NUT_EMULATION__       
    if (NutNvMemLoad(CONFNET_EE_OFFSET, &confnet, sizeof(CONFNET))) {
        return -1;
    }
    if (confnet.cd_size == sizeof(CONFNET) && strcmp(confnet.cd_name, name) == 0) {
        return 0;
    }
#endif
    memset(&confnet, 0, sizeof(confnet));

    /*
     * Set initial MAC address to broadcast. Thanks to Tomohiro
     * Haraikawa, who pointed out that all zeroes is occupied by
     * Xerox and should not be used.
     */
    memset(confnet.cdn_mac, 0xFF, sizeof(confnet.cdn_mac));

    return -1;

#endif /* CONFNET_HARDCODED */
}

int NutNetSaveConfig(void)
{
#if !defined (__NUT_EMULATION__) && !defined (CONFNET_HARDCODED)
    confnet.cd_size = sizeof(CONFNET);
    if (NutNvMemSave(CONFNET_EE_OFFSET, &confnet, sizeof(CONFNET))) {
        return -1;
    }
#endif
    return 0;
}