dhcp.h

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/* This file is part of the KDE Libraries
   Copyright (c) 2001 Malte Starostik <malte@kde.org>

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License version 2 as published by the Free Software Foundation.

   This library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this library; see the file COPYING.LIB.  If not, write to
   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
   Boston, MA 02110-1301, USA.
 */


/* See RFC 2131 for details */

#ifndef __dhcp_h__
#define __dhcp_h__

#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif

#define DHCP_OPT_LEN 312

struct dhcp_msg
{
#define DHCP_BOOTREQUEST 1
#define DHCP_BOOTREPLY   2
    uint8_t op;           /* operation */
    uint8_t htype;        /* hwaddr type */
    uint8_t hlen;         /* hwaddr len */
    uint8_t hops;
    uint32_t xid;          /* transaction id */
    uint16_t secs;        /* seconds since protocol start */
#define DHCP_BROADCAST 1
    uint16_t flags;
    uint32_t ciaddr;      /* client IP */
    uint32_t yiaddr;      /* "your" IP */
    uint32_t siaddr;      /* server IP */
    uint32_t giaddr;      /* gateway IP */
    uint8_t chaddr[16];   /* client hwaddr */
    uint8_t sname[64];    /* server name */
    uint8_t file[128];    /* bootstrap file */
    uint8_t options[DHCP_OPT_LEN];
};

/* first four bytes in options */
#define DHCP_MAGIC1   0x63
#define DHCP_MAGIC2   0x82
#define DHCP_MAGIC3   0x53
#define DHCP_MAGIC4   0x63

/* DHCP message types */
#define DHCP_DISCOVER 1
#define DHCP_OFFER    2
#define DHCP_REQUEST  3
#define DHCP_DECLINE  4
#define DHCP_ACK      5
#define DHCP_NAK      6
#define DHCP_RELEASE  7
#define DHCP_INFORM   8

/* option types */
#define DHCP_OPT_MSGTYPE  0x35
#define DHCP_OPT_PARAMREQ 0x37
#define DHCP_OPT_WPAD     0xfc
#define DHCP_OPT_END      0xff

#endif

/* vim: ts=4 sw=4 noet
 */