net1.h.bak

cf8020+cp2200(网络)的驱动实现

//-----------------------------------------------------------------------------
// NET.H
//
//-----------------------------------------------------------------------------
#ifndef __NET_H__
#define  __NET_H__

typedef unsigned char  				UCHAR;
typedef unsigned short 				uint;
typedef unsigned int				ulong;

// Constants
#define TRUE      					1
#define ON								1
#define OK                    	1
#define FALSE     					0
#define OFF								0
#define MATCH							0
#define RET		   					0x0D
#define LF								0x0A
#define SPACE		 					0x20

// Port numbers
#define ECHO_PORT						7
#define DAYTIME_PORT					13
#define CHARGEN_PORT					19
#define TIME_PORT						37
#define HTTP_PORT  					8080
#define TFTP_PORT  					69


// Event word bits
#define EVENT_ETH_ARRIVED			0x0001
#define EVENT_AGE_ARP_CACHE		0x0002
#define EVENT_TCP_RETRANSMIT		0x0004
#define EVENT_TCP_INACTIVITY		0x0008
#define EVENT_ARP_RETRANSMIT		0x0010
#define EVENT_READ_ANALOG			0x0020
#define EVENT_RS232_ARRIVED		0x0040


// Type number field in Ethernet frame
#define IP_PACKET             	0x0800
#define ARP_PACKET            	0x0806
#define RARP_PACKET					0x8035

// Protocol identifier field in IP datagram
#define ICMP_TYPE             	1
#define IGMP_TYPE						2
#define TCP_TYPE              	6
#define UDP_TYPE              	17

// Message type field in ARP messages 
#define ARP_REQUEST           	1
#define ARP_RESPONSE          	2
#define RARP_REQUEST		        	3
#define RARP_RESPONSE         	4

// Hardware type field in ARP message
#define DIX_ETHERNET          	1  //v2
#define IEEE_ETHERNET         	6  //802.3



typedef __packed struct
{
   ulong ipaddr;
   UCHAR hwaddr[6];
   UCHAR timer; 
} ARP_CACHE;


typedef __packed struct
{
	UCHAR * buf;
	ulong ipaddr;
	UCHAR proto_id;
	uint  len;
	UCHAR timer;
} WAIT;


typedef __packed  struct
{
	uint hardware_type;   //硬件地址类型
   uint  protocol_type;   //协议类型        
   UCHAR hwaddr_len;
   UCHAR ipaddr_len;               
   uint  message_type;
   UCHAR source_hwaddr[6];              
   ulong source_ipaddr;
   UCHAR dest_hwaddr[6];    
   ulong dest_ipaddr;
} ARP_HEADER;


typedef __packed  struct
{
  UCHAR dest_hwaddr[6];
  UCHAR source_hwaddr[6];
  uint  frame_type;
} ETH_HEADER;


typedef __packed  struct
{
   UCHAR ver_len;
   UCHAR type_of_service;
   uint  total_length;
   uint  identifier;
   uint  fragment_info;
   UCHAR time_to_live;
   UCHAR protocol_id;
   uint  header_cksum;
   ulong source_ipaddr;
   ulong dest_ipaddr;
} IP_HEADER;


typedef __packed  struct
{
	UCHAR msg_type;
	UCHAR msg_code;
	uint  checksum;
	uint  identifier;
	uint  sequence;
	UCHAR echo_data;
} PING_HEADER;


typedef __packed  struct
{
   UCHAR msg_type;
   UCHAR msg_code;
   uint  checksum;
   ulong msg_data;
   UCHAR echo_data;
} ICMP_ERR_HEADER;


typedef __packed  struct 
{
   uint  source_port;
   uint  dest_port;
   uint  length;
   uint  checksum;
	UCHAR msg_data;
} UDP_HEADER;


typedef __packed  struct
{
   uint  source_port;
   uint  dest_port;
   ulong sequence;
   ulong ack_number;
   uint  flags;
   uint  window;
   uint  checksum;
   uint  urgent_ptr;
   UCHAR options;
} TCP_HEADER;


typedef __packed  struct
{
  ulong ipaddr;        //收到IP报文的源IP地址,即对端发方的IP地址
  uint  port;          //收到TCP报文的源端口,即对端发方的端口
  ulong his_sequence;  //收到TCP报文的发送序号,即对端发方的发送序号　
  ulong my_sequence;   //本端的发送序号
  ulong old_sequence;  //对端老的发送序号，为了重传
  ulong his_ack;       //收到TCP报文的确认序号，即对端发方的确认序号
  UCHAR timer;
  UCHAR inactivity;	   //本连接剩余的非激活时间
  UCHAR state;         //TCP连接的11个状态；
  char  query[20];
} CONNECTION;

typedef __packed  struct          //伪头部，计算校验和用
{
    ulong m_saddr; //源地址 
    ulong m_daddr; //目的地址 
    UCHAR m_mbz; 
    UCHAR m_ptcl; //协议类型 
    uint m_tcpl; //TCP长度 
}PSD_HEADER;


#define TFTP_RRQ 01 // 读请求
#define TFTP_WRQ 02 // 写请求
#define TFTP_DATA 03 // 数据包
#define TFTP_ACK 04 // 确认包
#define TFTP_ERROR 05 // 错误代码


#endif