ICMPv4.h

00001 /*
00002  * $Id: ICMPv4.h 23 2011-06-06 06:03:23Z benoit $
00003  * $Author: benoit $
00004  * $Date: 2011-06-06 08:03:23 +0200 (lun., 06 juin 2011) $
00005  * $Rev: 23 $
00006  * 
00007  * 
00008  * 
00009  * 
00010  * 
00011  */
00012  
00013 #ifndef __ICMPV4_H__
00014 #define    __ICMPV4_H__
00015 
00016 
00017 #include "NetIF.h"
00018 #include "IPv4.h"
00019 
00020 
00021 #define    ICMPV4_TYPE_ECHO_REPLY        0
00022 #define    ICMPV4_TYPE_ECHO_REQUEST    8
00023 
00024 
00025 typedef uint8_t        ICMPv4_Type_t;
00026 typedef uint8_t        ICMPv4_Code_t;
00027 
00028 
00029 #pragma push
00030 #pragma pack(1)
00031 struct ICMPv4_Header
00032 {
00033     uint8_t        type;
00034     uint8_t        code;
00035     uint16_t    crc;
00036     union 
00037     {
00038         uint32_t    restOfHeader;
00039         struct
00040         {
00041             uint16_t    id,
00042                         sequence;
00043         } ping;
00044     } rest;
00045 };
00046 #pragma pop
00047 typedef struct ICMPv4_Header ICMPv4_Header_t;
00048 
00049 
00050 extern Protocol_Handler_t    icmpv4;
00051 
00052 
00053 uint16_t    ICMPv4_ComputeCRC(ICMPv4_Header_t *packet, int32_t length);
00054 Bool_t      ICMPv4_CheckCRC(ICMPv4_Header_t *packet, int32_t length);
00055 void        ICMPv4_DumpHeader(const char *prefix, IPv4_Header_t *ipv4Header);
00056 
00057 #endif /* __ICMPV4_H__ */