text: /*
               LUFA Library
       Copyright (C) Dean Camera, 2012.
  
    dean [at] fourwalledcubicle [dot] com
             www.lufa-lib.org
  */
  
  /*
    Copyright 2012  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 ICMP.c.
   */
  
  #ifndef _ICMP_H_
  #define _ICMP_H_
  
  	/* Includes: */
  		#include <avr/io.h>
  		#include <string.h>
  
  		#include "EthernetProtocols.h"
  		#include "Ethernet.h"
  		#include "ProtocolDecoders.h"
  
  	/* Macros: */
  		/** ICMP message type constant, indicating an ICMP ECHO Reply message. */
  		#define ICMP_TYPE_ECHOREPLY              0
  
  		/** ICMP message type constant, indicating a packet destination is unreachable. */
  		#define ICMP_TYPE_DESTINATIONUNREACHABLE 3
  
  		/** ICMP message type constant, indicating an ICMP Source Quench message. */
  		#define ICMP_TYPE_SOURCEQUENCH           4
  
  		/** ICMP message type constant, indicating an ICMP Redirect message. */
  		#define ICMP_TYPE_REDIRECTMESSAGE        5
  
  		/** ICMP message type constant, indicating an ICMP ECHO Request message. */
  		#define ICMP_TYPE_ECHOREQUEST            8
  
  		/** ICMP message type constant, indicating an ICMP Time Exceeded message. */
  		#define ICMP_TYPE_TIMEEXCEEDED           11
  
  	/* Type Defines: */
  		/** Type define for an ICMP message header. */
  		typedef struct
  		{
  			uint8_t       Type; /**< ICMP message type, an \c ICMP_TYPE_* constant */
  			uint8_t       Code; /**< ICMP message code, indicating the message value */
  			uint16_t      Checksum; /**< Ethernet checksum of the ICMP message */
  			uint16_t      Id; /**< Id of the ICMP message */
  			uint16_t      Sequence; /**< Sequence number of the ICMP message, to link together message responses */
  		} ICMP_Header_t;
  
  	/* Function Prototypes: */
  		int16_t ICMP_ProcessICMPPacket(Ethernet_Frame_Info_t* const FrameIN,
  		                               void* InDataStart,
  		                               void* OutDataStart);
  
  #endif
  
  