firmware/ip.h (2342395) - flaneth · BlinkenArea

ip.h

/* flaneth - flash and ethernet
   Copyright (C) 2007-2012 Stefan Schuermans <stefan@blinkenarea.org>
   Copyleft: GNU public license V2 - http://www.gnu.org/copyleft/gpl.html
   a BlinkenArea project - http://www.blinkenarea.org/ */

#ifndef INC_ip
#define INC_ip

#include "ethernet.h"

// header of an IP packet
struct IpHeader {
  unsigned char Ver_HdrLen;
  unsigned char Tos;
  unsigned int TotalLen;
  unsigned int Id;
  unsigned int FragOfs;
  unsigned char Ttl;
  unsigned char Proto;
  unsigned int HdrChk;
  unsigned char Src[4];
  unsigned char Dest[4];
};

// an IP packet
struct IpPacket {
  struct EthernetHeader EthHdr;
  struct IpHeader IpHdr;
};

// tick procedure - call every 200ms
extern void IpTick200(void);

// process a received IP packet
extern void IpRecv(unsigned char *pData, unsigned short Length);

// send an IP packet
// pData must point to a struct IpPacket with IpHdr.Proto and IpHdr.Dest
// already initialized
extern void IpSend(unsigned char *pData, unsigned short Length);

// a MAC address was discovered
// called by ARP to notify IP
extern void IpGotMac(unsigned char Ip[4], unsigned char Mac[6]);

#endif // #ifdef INC_ip

flaneth

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