IPv4.h

00001 /*
00002  * $Id: IPv4.h 27 2011-06-09 12:55:57Z benoit $
00003  * $Author: benoit $
00004  * $Date: 2011-06-09 14:55:57 +0200 (jeu., 09 juin 2011) $
00005  * $Rev: 27 $
00006  * 
00007  * 
00008  * 
00009  * 
00010  * 
00011  */
00012  
00013 #ifndef __IPV4_H__
00014 #define __IPV4_H__
00015 
00016 #include "NetIF.h"
00017 
00018 
00019 #define    IPV4_PROTO_ICMPV4        1
00020 #define    IPV4_PROTO_TCPV4        6
00021 #define    IPV4_PROTO_UDPV4        17
00022 
00023 
00024 #define    IPV4_VERSION            4
00025 #define    IPV4_FLAG_DF            0x02
00026 #define    IPV4_FLAG_MF            0x04
00027 
00028 typedef uint16_t                IPv4_Proto_t;
00029 
00030 
00031 #pragma push
00032 #pragma pack(1)
00033 struct IPv4_Header
00034 {
00035     uint8_t        ihl                :4;
00036     uint8_t        version            :4;
00037     uint8_t        tos;
00038     uint16_t    totalLength;
00039     uint16_t    id;
00040     uint16_t    fragmentFlags;
00041     uint8_t        ttl;
00042     uint8_t        protocol;
00043     uint16_t    crc;
00044     IPv4_Addr_t    source,
00045                 dest;
00046 };
00047 #pragma pop
00048 typedef struct IPv4_Header IPv4_Header_t;
00049 
00050 
00051 extern Protocol_Handler_t ipv4;
00052 
00053 
00054 void        IPv4_DumpIPv4Header(const char *prefix, IPv4_Header_t *ipv4Packet);
00055 uint16_t    IPv4_ComputeCRC(IPv4_Header_t *ipv4Header);
00056 
00057 
00058 #endif /* __IPV4_H__ */
00059