rpdu.h

用于嵌入式系统的TCP/IP协议栈及若干服务

/*
*            Copyright (c) 1998-2001 by NETsilicon Inc.
*
*  This software is copyrighted by and is the sole property of
*  NETsilicon.  All rights, title, ownership, or other interests
*  in the software remain the property of NETsilicon.  This
*  software may only be used in accordance with the corresponding
*  license agreement.  Any unauthorized use, duplication, transmission,
*  distribution, or disclosure of this software is expressly forbidden.
*
*  This Copyright notice may not be removed or modified without prior
*  written consent of NETsilicon.
*
*  NETsilicon, reserves the right to modify this software
*  without notice.
*
*  NETsilicon
*  411 Waverley Oaks Road                  USA 781.647.1234
*  Suite 227                               http://www.netsilicon.com
*  Waltham, MA 02452                       [e-mail]
*
*************************************************************************
*  $Name: Fusion 6.52 Fusion 6.51 $
*  $Date: 2001/09/20 10:32:06 $
*  $Source: M:/psisrc/routing/incl/rcs/rpdu.h $
*  $Revision: 1.5 $
*************************************************************************
*  File Description: RIP packet definitions   
*************************************************************************/

#define RIP_HLEN 4
typedef struct rip_pdu{
	byte			rp_cmd;		/* command */
	byte			rp_ver;		/* version */
	byte			rp_rd1;		/* domain */
	byte			rp_rd0;		/* domain */
}RPDU, *rpdu_pt;

/* commands */
#define RIP_CMD_REQ		1		/* request */
#define RIP_CMD_RSP		2		/* response */

/* version */
#define RIP_VERSION		1

/* address families */
#define RIP_AFI_IP		2		/* IP address */
#define RIP_AFI_AUTH	0xffff

/* rripa address option */
#define RIP_OPT_LEN 20
#define ROPT_FWD(opt) (ripa_pt)( (byte *)opt + RIP_OPT_LEN )
typedef struct rip_ipadd_opt{
	byte			ra_afi1;		/* address family */
	byte			ra_afi0;
	byte			ra_tag1;		/* route tag */
	byte			ra_tag0;
	byte			ra_ipa3;		/* ip address */
	byte			ra_ipa2;
	byte			ra_ipa1;
	byte			ra_ipa0;
	byte			ra_msk3;		/* subnet mask */
	byte			ra_msk2;
	byte			ra_msk1;
	byte			ra_msk0;
	byte			ra_nh3;			/*sugg next hop */
	byte			ra_nh2;
	byte			ra_nh1;
	byte			ra_nh0;
	byte			ra_met3;		/* dword metric */
	byte			ra_met2;
	byte			ra_met1;
	byte			ra_met0;
}RIPA, *ripa_pt;