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/*
LUFA Library
Copyright (C) Dean Camera, 2019.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2019 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, provided that the above copyright notice appear in
all copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaims all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
/** \file
*
* Header file for ARP.c.
*/
#ifndef _ARP_H_
#define _ARP_H_
/* Includes: */
#include <avr/io.h>
#include <string.h>
#include "EthernetProtocols.h"
#include "Ethernet.h"
#include "ProtocolDecoders.h"
/* Macros: */
/** ARP header operation constant, indicating a request from a host for an address translation. */
#define ARP_OPERATION_REQUEST 1
/** ARP header operation constant, indicating a reply from a host giving an address translation. */
#define ARP_OPERATION_REPLY 2
/* Type Defines: */
/** Type define for an ARP packet inside an Ethernet frame. */
typedef struct
{
uint16_t HardwareType; /**< Hardware type constant, indicating the hardware used */
uint16_t ProtocolType; /**< Protocol being resolved, usually ETHERTYPE_IPV4 */
uint8_t HLEN; /**< Length in bytes of the source/destination hardware addresses */
uint8_t PLEN; /**< Length in bytes of the source/destination protocol addresses */
uint16_t Operation; /**< Type of operation, either ARP_OPERATION_REQUEST or ARP_OPERATION_REPLY */
MAC_Address_t SHA; /**< Sender's hardware address */
IP_Address_t SPA; /**< Sender's protocol address */
MAC_Address_t THA; /**< Target's hardware address */
IP_Address_t TPA; /**< Target's protocol address */
} ARP_Header_t;
/* Function Prototypes: */
int16_t ARP_ProcessARPPacket(void* InDataStart,
void* OutDataStart);
#endif
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