dhcp.h

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/****************************************Copyright (c)**************************************************
**                               Guangzou ZLG-MCU Development Co.,LTD.
**                                      graduate school
**                                 http://www.zlgmcu.com
**
**--------------File Info-------------------------------------------------------------------------------
** File Name: dhcp.h
** Last modified Date:  2004-11-27
** Last Version: 1.0
** Descriptions: DHCP HEAD FILE
**
**------------------------------------------------------------------------------------------------------
** Created By: Yehaoben
** Created date:   2004-11-27
** Version: 1.0
** Descriptions: First version
**
**------------------------------------------------------------------------------------------------------
** Modified by:
** Modified date:
** Version:
** Descriptions:
**
********************************************************************************************************/

#ifdef DHCP_GLOBALS
#define DHCP_EXT 
#else
#define DHCP_EXT extern 
#endif 

#define	DHCPDISCOVER	1
#define	DHCPOFFER	2
#define	DHCPREQUEST	3
#define	DHCPDECLINE	4
#define	DHCPACK		5
#define	DHCPNAK		6
#define	DHCPRELEASE	7
#define	DHCPINFORM	8
/********************************************************************************************************
**                             Structure Define
********************************************************************************************************/
typedef struct  {
	uint8	MegType;
	uint8	HardType;
	uint8	HardAddrLen;
	uint8	Hops;
	uint32	TransID;
	uint16	Sec;
	uint16	BootFlags;
	uint8	CliIP[4];
	uint8	YourIP[4];
	uint8	SrvIP[4];
	uint8	GateIP[4];
	uint8	CliAddr[16];
	uint8	Sname[64];
	uint8	BFname[128];
	uint8	MagicCookie[4];
	uint8	Option[60];
        }Bootp;
typedef union{
	uint8 BootData[300];
	Bootp Message;
	}DHCP;
/********************************************************************************************************
**                              Global Variables Define
********************************************************************************************************/
DHCP_EXT uint8	DHCPStatue[MAX_NET_PORT];//0x01:等待IP，0x02:收到offer，保存了service IP，0x04:完成获取
DHCP_EXT uint8	DHCPRequreIP[MAX_NET_PORT][4];//获取的IP
DHCP_EXT uint8	DHCPServiceIP[MAX_NET_PORT][4];//服务器IP	
DHCP_EXT uint32	RebuildTime[MAX_NET_PORT];
DHCP_EXT uint32	RenewalTime[MAX_NET_PORT];
DHCP_EXT uint32	IPLeaseTime[MAX_NET_PORT];
/********************************************************************************************************
**                              Function Define
********************************************************************************************************/
DHCP_EXT uint8  DHCP_Handle(uint8 * dataptr,uint8 * DeIp);
DHCP_EXT uint8  Send_DHCPDISCOVER(void);
DHCP_EXT uint8  DHCP_Initial(void);