ethernet.h

此代码是实现将lwip协议移植于51单片机的测试程序

//#include <word.h>
//#include <absacc.h>
//#include <inettype.h>

#define reg00   XBYTE[0xFF00]   //reg00- 10为isa网卡接口的寄存器地址300-310；
#define reg01   XBYTE[0xFF01]
#define reg02   XBYTE[0xFF02]
#define reg03   XBYTE[0xFF03]
#define reg04   XBYTE[0xFF04]
#define reg05   XBYTE[0xFF05]
#define reg06   XBYTE[0xFF06]
#define reg07   XBYTE[0xFF07]
#define reg08   XBYTE[0xFF08]
#define reg09   XBYTE[0xFF09]
#define reg0a   XBYTE[0xFF0A]
#define reg0b   XBYTE[0xFF0B]
#define reg0c   XBYTE[0xFF0C]
#define reg0d   XBYTE[0xFF0D]
#define reg0e   XBYTE[0xFF0E]
#define reg0f   XBYTE[0xFF0F]
#define reg10   XBYTE[0xFF10]
#define reg1f   XBYTE[0xFF1F]

//EtherNet
#define MaxLenARPtable	30
#define MaxLenTxBuf	10

#define PINGTYPE	1
#define UDPTYPE		2

#define HOST		6
#define GATEWAY		14
#define MASK		10
#define SNMPHOST	18
#define MACADR		0
//EtherNet

void page(unsigned char pagenumber);//ne2000页选择
void getadr(unsigned char id,unsigned char *bytes);//读取MAC地址参数
void setadr(unsigned char id,unsigned char *bytes);//设置MAC地址参数
void initNIC(void);//初始化网卡配置参数
void delay_ms(unsigned char ms_number);//延时
void rtl8019as_rst();//RTL8019AS复位
void ne2000init();//ne2000网卡初始化
void send_packet(union netcard *txdnet,unsigned int length);//ne2000发包子程序
bit recv_packet(union netcard *rxdnet);//ne2000收包子程序
void trans_pack(union netcard *txdnet,union ip_address_type destip,unsigned int length,unsigned char type);//发包至缓冲区
void process_trans_pack();//发包缓冲区发送处理
void arp_request(unsigned long ip_address);//ARP请求
void arp_answer();//ARP应答
void arp_process();//???????????????chang//ARP应答处理
void ping_request();//????????????????????????//PING请求
void ping_answer();//????????????????????????//PING应答
void ping_echo();//PING应答收到后回显
void CfgHost(WORDTABLE *WordTable);//配置主机IP
void CfgGateway(WORDTABLE *WordTable);//配置网关IP
void CfgMask(WORDTABLE *WordTable);//配置子网掩码
void CfgSnmpHost(WORDTABLE *WordTable);//配置SNMP主机IP
void PrintARPtable(WORDTABLE *WordTable);//显示ARP缓存
void PrintConfig(WORDTABLE *WordTable);//显示配置信息
void PingCommand(WORDTABLE *WordTable);//PING命令处理
void make_udp(union netcard *txdnet,union ip_address_type udpdestip,unsigned char *dat,unsigned int length,unsigned int portnumber);//封装UDP包
void UDPCommand(WORDTABLE *WordTable);//UDP命令处理
void CfgMacAddress(WORDTABLE *WordTable);//配置MAC地址
void ListTxBuf(WORDTABLE *WordTable);//显示发送缓冲区
void InitArpTable(void);//初始化ARP缓存
void InitTxBuf(void);//初始化发送缓冲区
void process_tcp();//TCP处理
unsigned int createipheadcrc();//生成IP包头CRC校验
unsigned int createicmpcrc();//生成ICMP包CRC校验
unsigned int checksum(unsigned int xdata *check,unsigned int length);//计算校验和
unsigned int createtcpcrc();//生成TCP包CRC校验
bit verifyipheadcrc();//对ip头进行校验,错误返回0,正确返回1
unsigned char verifytcpcrc();//对tcp头进行校验,错误返回0,正确返回1
bit verifyudpcrc();//对udp头进行校验,错误返回0,正确返回1
void process_udp();//UDP处理进程
void updatearptab(void);//更新ARP缓存
bit findmacadr(union ip_address_type ip,union ethernet_address_type *macadr);//在ARP缓存中查找指定IP/MAC映射对
void maincycle(void);//主循环