icmp.h

这同样是FS8610相关的代码.看起来不错啊.

/**
 * \addtogroup icmp
 * @{
 */

 
 /**
 * \file
 * \brief ICMP layer configuration and API header file
 * \author glyin <[e-mail]>
 */
 
/*
******************************************************************************
*
Copyright (c) 2006 FameG Shanghai, Inc. All rights reserved.
*
This is unpublished proprietary source code of FameG Shanghai, Inc.
*
The copyright notice above does not evidence any actual or intended
*
publication of such source code.
******************************************************************************
*/
/*
******************************************************************************
*
Project: T4 L4MCU FPGA verification
*
Filename: icmp.h
*
Date: 28/02/06
*
Purpose: ICMP functions for L4MCU (Keil C Compiler)
*
Author: Guanglei Yin
******************************************************************************
*/

#ifndef __ICMP_H__
#define __ICMP_H__

#include "kernel/system.h"
#include "user_config.h"

/***************************************************************************** 
*                          CONSTANT DEFINES                                                                         *
*****************************************************************************/

/*!\brief  Define ICMP header len.
 */
#define ICMP_HLEN                           8

/*!\brief  Define UDP header len.
 */
#define UDP_HLEN                             8


/* IP protocol                */
/// \cond DOXYGEN_SKIP
#define IP_ICMP                                  1
#define IP_UDP                                    17
#define IP_IGMP                                  2
#define IP_TCP                                    6

/* IP option                   */
#define IP_OPT_TIMESTAMP              68
#define IP_OPT_RECORD_ROUTER                    7

/* ICMP message types */
#define ICMP_DEST_UNREACHABLE		3
#define ICMP_ECHO_REQUEST	            8
#define ICMP_ECHO_REPLY					0
#define ICMP_ROUTER_ADVERTISEMENT		9
#define ICMP_ROUTER_SOLICITATION              10
#define ICMP_INFORMATION_REQUEST	            15
#define ICMP_INFORMATION_REPLY	            16
/// \endcond                                                  


/* ICMP destination unreachable message code */

/*!\brief  net unreachable type flag.
 */
#define NET_UNREACH                         0

/*!\brief  host unreachable type flag.
 */
#define HOST_UNREACH                        1     

/*!\brief  protocol unreachable type flag.
 */
#define PRO_UNREACH               	        2

/*!\brief  port unreachable type flag.
 */
#define PORT_UNREACH              	        3

/*!\brief  fragmentation needed DF set type flag.
 */
#define FRAGMENTATION_NEEDED_DF_SET	4



/***************************************************************************** 
*                                       MACROS                                                                            *
*****************************************************************************/

/*!\brief  Get ICMP RXFIFO Write Pointer.
 */
#define  GET_ICMP_RFWP()                icmp_GetRFWP()	   

/*!\brief  Get ICMP RXFIFO Read Pointer.
 */
#define  GET_ICMP_RFRP()                icmp_GetRFRP()	   

/*!\brief  Set ICMP RXFIFO Read Pointer.
 */
#define  SET_ICMP_RFRP(p)				icmp_SetRFRP(p)   

/*!\brief  Get ICMP TXFIFO Write Pointer.
 */
#define  GET_ICMP_TFWP()                icmp_GetTFWP()	  

/*!\brief  Get ICMP TXFIFO Read Pointer.
 */
#define  GET_ICMP_TFRP()				icmp_GetTFRP()	  

/*!\brief  Set ICMP TXFIFO Write Pointer.
 */
#define  SET_ICMP_TFWP(p)				icmp_SetTFWP(p)   

/*!\brief  Get ICMP TXFIFO free space.
 */
#define  GET_ICMP_TFFS()				icmp_GetTFFS()   

/*!\brief  Get ICMP interrupt status.
 */
#define GET_ICMP_INT_STATUS()    inb(SYS_ICMP_INTSTAT)



/***************************************************************************** 
*                                       DATA TYPES                                                                      *
*****************************************************************************/

/*!\brief  Record some information pass to echo request packet.
 */
struct echo_request_t
{
	UINT8 ttl;    //!< The ttl field in IP header of ICMP echo request packet.      
	UINT8 tos;  //!< The tos field in IP header of ICMP echo request packet. 
#if IPOPTION
	UINT8 route_count;          //!< The count of record router in ICMP echo request packet. 
	UINT8 timestamp_count;      //!< The count of record timestamp in ICMP echo request packet. 
#endif
}; 

/*!\brief Record the first 8 bytes ICMP header in ICMP echo packet.
 */
typedef struct 
{  
	/* ICMP header. */
	UINT8 type;          //!< The type field in ICMP header.   
	UINT8 code_;        //!< The code field in ICMP header.  
	UINT16 chksum;   //!< The checksum field in ICMP header.  
	UINT16 ident;        //!< The identifier field in ICMP header.  
	UINT16 seqnum;   //!< The sequence number field in ICMP header.  
} icmp_hdr;



/***************************************************************************** 
*                    FUNCTIONS DECLARATION                                                                      *
*****************************************************************************/

/*     ICMP function            */
extern void icmp_Init(void);                                                    /* Initialize ICMP                      */
extern void icmp_TxAbort(void);	                 /* TXFIFO transmit abort                           */
extern void icmp_Reset(void);
extern INT16 icmp_write_to_fifo(struct tx_descriptor_t *desc, UINT8 XDATA *txbuf, UINT16 len ); /* Send out packet through ICMP channel*/
extern INT16 icmp_read_from_fifo(struct rx_descriptor_t *desc, UINT8 XDATA*rxbuf, UINT16 buf_len);          /* Receive packet through ICMP channel */ 
extern void icmp_process_in(void);                                               /* process ICMP RX channel         */
#if 1//INCLUDE_PING_APP
extern INT8 icmp_SendEchoReqPkt(UINT32 dest_addr, UINT16 pkt_size,struct echo_request_t *echo); /* send ICMP echo request packet       */
#endif
                                                                                         

/*     ICMP interrupt function   */
extern void icmp_IntService(void);	             /* ICMP interrupt service handler                  */
extern void register_icmp_igmp_interrupt(UINT8 type, int_function handler); /* Initialize ICMP interrupt handler                       */



/***************************************************************************** 
*                   GLOBAL VARIABLES DECLARATION                                                            *
*****************************************************************************/

/// \cond DOXYGEN_SKIP
#if INCLUDE_ICMP_RESPONSE
extern BOOL response_en;
#endif
/// \endcond 

#if 1//INCLUDE_PING_APP
#if IPOPTION
extern UINT8 timestamp_addr[4][4];
extern union dword_byte_u timestamp_val[4];
extern UINT8 route_val[9][4];
extern UINT8 timestamp_count;
extern UINT8 route_count;
#endif
extern UINT32 ping_addr;
extern UINT8 echo_reqest_flag;     
extern UINT8 IsReceived; 
#endif
 

#endif	  /*__ICMP_H__*/

/** @} */