router.h

包括ＥＰＡ协议栈

#ifndef _ROUTER_H
#define _ROUTER_H
//router.h
#include "global.h"
#include "list.h"
#include "tcpip.h"

#ifdef  _ROUTER_GLOBAL
#define ROUTER_EXT
#else 
#define ROUTER_EXT extern
#endif


#define ROUTERTABLE_AMOUNT 16          //路由表所含的项目数
#define ROUTER_NO_ERR   0 
#define ROUTER_INVALID  1
#define ROUTERINIT_NO_ERR 0            //路由表初始化正确
#define RIP2_REQUEST_NO_ERR 0          //RIP请求报文发送正确
#define CreatRouterNI_NO_ERR 0
#define CreatRouterNI_NI_NOTVALID 1

#define PROTOCOL_RIP_DATA  66   
#define ROUTERTABLE_UPDATE_NO_ERR 0
#define ROUTER_TRANSMIT_NO_ERR    0
//定义RIP报文使用的UDP端口并告知王浩文在UDP报文处理时加上RIP的处理流程
#define RIP_PORT 0x520
#define Groupcast 0xe0000009
//定义RIP报文类型
#define RIP_TYPE_REQUEST  1
#define RIP_TYPE_RESPONSE 2

#define RIP_LENGTH 24

//定义路由器A接口1所直接连接的网络A的网络地址
#define netA1 128
#define netA2 128
#define netA3 128
#define netA4 0
//定义路由器B接口1所直接连接的网络A的网络地址
#define netB1 128
#define netB2 128
#define netB3 126
#define netB4 0
//定义路由器A接口2和路由器B接口2所在的子网网络地址
#define netC1 128
#define netC2 128
#define netC3 127
#define netC4 0
//定义组播地址
#define GCA1 224
#define GCA2 0
#define GCA3 0
#define GCA4 9

//ROUTER_EXT uint32 Groupcast;

//定义路由表的数据结构
typedef struct 
{
uint32 network_address;  //网络地址
uint32 subnet_mask;      //子网掩码
uint32 next_hop;         //下一跳地址
uint32 interface;        //与网络连接的接口地址
uint32  metric;           //跳数
uint32  state;             //状态
}router_table;

typedef struct
{
uint8  rip_type;                //RIP报文的类型
uint8  rip_ver;                 //RIP报文的版本
uint16 reserved;                //保留
uint16 rip_protocol;            //RIP使用的协议系列
uint16 rip_router_tag;          //RIP路由标记
uint32 rip_netaddress;          //网络地址
uint32 rip_subnet_mask;         //子网掩码
uint32 rip_next_hopaddress;	//下一跳地址
uint32 rip_hop_number;          //跳数
}rip_header;

ROUTER_EXT router_table router_tbl[ROUTERTABLE_AMOUNT];
ROUTER_EXT uint8 CreatRouterTable(uint32 ip,uint32 mask,uint32 Nip,uint32 inf,uint32 nu);

ROUTER_EXT OS_EVENT* gpRIPMacroMsgQ;
ROUTER_EXT OS_EVENT* gpROUTERMsgQ;


void RIPMacroInit(void);
void RIPMacroTask(void *pdata);
void RIPInput(PSock psock);
uint8 InitRouterTable(void);
void IPRouter(uint32 s_ip, uint32 d_ip, PSock psock);
void RouterInit(void);

#endif