You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
94 lines
3.6 KiB
94 lines
3.6 KiB
/*
|
|
LUFA Library
|
|
Copyright (C) Dean Camera, 2009.
|
|
|
|
dean [at] fourwalledcubicle [dot] com
|
|
www.fourwalledcubicle.com
|
|
*/
|
|
|
|
/*
|
|
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
|
|
|
|
Permission to use, copy, modify, and distribute this software
|
|
and its documentation for any purpose and without fee is hereby
|
|
granted, 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 disclaim 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 IP.c.
|
|
*/
|
|
|
|
#ifndef _IP_H_
|
|
#define _IP_H_
|
|
|
|
/* Includes: */
|
|
#include <avr/io.h>
|
|
#include <string.h>
|
|
|
|
#include "EthernetProtocols.h"
|
|
#include "Ethernet.h"
|
|
#include "ProtocolDecoders.h"
|
|
|
|
/* Macros: */
|
|
/** Protocol IP address of the host (client) machine, once assigned by DHCP */
|
|
#define CLIENT_IP_ADDRESS { 10, 0, 0, 1}
|
|
|
|
/** Protocol IP address of the virtual server machine */
|
|
#define SERVER_IP_ADDRESS { 10, 0, 0, 2}
|
|
|
|
/** Protocol IP address of the broadcase address */
|
|
#define BROADCAST_IP_ADDRESS {0xFF, 0xFF, 0xFF, 0xFF}
|
|
|
|
/** Default Time To Live (TTL) value for sent packets, indicating the maximum allowable hops until their destination is reached */
|
|
#define DEFAULT_TTL 128
|
|
|
|
/** Performs a comparison between two IP addresses, indicating if they are identical.
|
|
*
|
|
* \param IP1 First IP address
|
|
* \param IP2 Second IP address
|
|
*
|
|
* \return True if the addresses match, false otherwise
|
|
*/
|
|
#define IP_COMPARE(IP1, IP2) (memcmp(IP1, IP2, sizeof(IP_Address_t)) == 0)
|
|
|
|
/* Type Defines: */
|
|
/** Type define of an IP packet header. */
|
|
typedef struct
|
|
{
|
|
unsigned char HeaderLength : 4; /**< Total length of the packet header, in 4-byte blocks */
|
|
unsigned char Version : 4; /**< IP protocol version */
|
|
uint8_t TypeOfService; /**< Special service type identifier, indicating delay/throughput/reliability levels */
|
|
uint16_t TotalLength; /**< Total length of the IP packet, in bytes */
|
|
|
|
uint16_t Identification; /**< Idenfication value for identifying fragmented packets */
|
|
unsigned int FragmentOffset : 13; /**< Offset of this IP fragment */
|
|
unsigned int Flags : 3; /**< Fragment flags, to indicate if a packet is fragmented */
|
|
|
|
uint8_t TTL; /**< Maximum allowable number of hops to reach the packet destination */
|
|
uint8_t Protocol; /**< Encapsulated protocol type */
|
|
uint16_t HeaderChecksum; /**< Ethernet checksum of the IP header */
|
|
|
|
IP_Address_t SourceAddress; /**< Source protocol IP address of the packet */
|
|
IP_Address_t DestinationAddress; /**< Destination protocol IP address of the packet */
|
|
} IP_Header_t;
|
|
|
|
/* Function Prototypes: */
|
|
int16_t IP_ProcessIPPacket(void* InDataStart, void* OutDataStart);
|
|
|
|
#endif
|