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/******************************************************************************
* Copyright (c) 2004, 2008 IBM Corporation
* All rights reserved.
* This program and the accompanying materials
* are made available under the terms of the BSD License
* which accompanies this distribution, and is available at
* http://www.opensource.org/licenses/bsd-license.php
*
* Contributors:
* IBM Corporation - initial implementation
*****************************************************************************/
#ifndef _DHCP_H_
#define _DHCP_H_
#include <stdint.h>
#ifdef USE_MTFTP
#include <netlib/mtftp.h>
#else
#include <netlib/tftp.h>
#endif
/** \struct btphdr
* A header for BootP/DHCP-messages.
* For more information see RFC 951 / RFC 2131.
*/
struct btphdr {
uint8_t op; /**< Identifies is it request (1) or reply (2) */
uint8_t htype; /**< HW address type (ethernet usually) */
uint8_t hlen; /**< HW address length */
uint8_t hops; /**< This info used by relay agents (not used) */
uint32_t xid; /**< This ID is used to match queries and replies */
uint16_t secs; /**< Unused */
uint16_t unused; /**< Unused */
uint32_t ciaddr; /**< Client IP address (if client knows it) */
uint32_t yiaddr; /**< "Your" (client) IP address */
uint32_t siaddr; /**< Next server IP address (TFTP server IP) */
uint32_t giaddr; /**< Gateway IP address (used by relay agents) */
uint8_t chaddr[16]; /**< Client HW address */
uint8_t sname[64]; /**< Server host name (TFTP server name) */
uint8_t file[128]; /**< Boot file name */
uint8_t vend[64]; /**< Optional parameters field (DHCP-options) */
};
void dhcpv4_generate_transaction_id(void);
int bootp(char *ret_buffer, filename_ip_t *, unsigned int);
int dhcpv4(char *ret_buffer, filename_ip_t *);
void dhcp_send_release(int fd);
/* Handles DHCP-packets, which are detected by receive_ether. */
extern int8_t handle_dhcp(int fd, uint8_t * packet, int32_t packetsize);
#endif
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