rip.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/rip.h $
*  $Revision: 1.6 $
*************************************************************************
*  File Description: Rip global node and RIP cicuits definitions.  
*************************************************************************/

#ifndef _RIP_H
#define _RIP_H

#define RIP_MAX_TRUST  20

typedef struct rprot_node{
	dword				rn_tics;
	int					rn_impmet;			/* import metric */
	int					rn_trig;			/* trig update */
	int					rn_riptimer;
	int					rn_radmst;			/* rip state */
	word				rn_rdom;			/*rip domain */
	int					rn_dotrust;
	int					rn_numtrust;
	rripa				rn_trustnbr[RIP_MAX_TRUST];
	counter				rn_rip2GlobalRouteChanges;
	counter				rn_rip2GlobalQueries;
	struct iproute_entry 	*rn_garb_fwd;	/* garbage collect */
	struct iproute_entry 	*rn_garb_bwd;	/* garbage collect */
	/* EMBEDDED STRUCTS ONLY BELOW HERE */
	rrTHEAD				rn_ripTimers;
	struct dll			rn_rip_circ_hash[CIRC_HASHES];
	int					rn_ripClock;
	int					rn_rxvers;
	rripa				rn_locNet;
	rripa				rn_locMask;
	rripa				rn_locClassMask;
	struct rip_circ		*rn_locCirc;
}RNODE, *rnode_pt;

extern RNODE *r_node;
#define rip_circ_hash   r_node->rn_rip_circ_hash
#define ripTimers       r_node->rn_ripTimers
#define rip_clock       r_node->rn_ripClock
#define ripvers	        r_node->rn_rxvers
#define loc_net	        r_node->rn_locNet
#define loc_mask	    r_node->rn_locMask
#define loc_class_mask  r_node->rn_locClassMask
#define loc_circ	    r_node->rn_locCirc

/* circuit structure, one for each logical channel */

typedef struct rip_circ{
	struct rip_circ	*rc_fwd;		/* link */
	struct rip_circ	*rc_bwd;		/* link */
	void				*rc_gptr;		/* environment use */
	int					rc_id;
	int					rc_type;		/* type of circuit */
	int					rc_met;			/* L1 default metric */
	int					rc_talk;		/* does talk */
	int					rc_listen;	/* does listen */
	int					rc_poison;	/* does poison */
	int					rc_r2txmode;	/* rip2 tx mode */
	int					rc_r2rxmode;	/* rip2 rx mode */
	int					rc_state;		/* oper state */
	int					rc_auth_type;
	byte				rc_auth_key[16];

	IPNA   		     	rc_ipa[MAX_IF_IPADD];
	rripa				rc_srcipa;	/* for unnum ptpt */
	struct rip_nbr		*rc_nbr_fwd;
	struct rip_nbr		*rc_nbr_bwd;
	int					rc_distlist_in;
	int					rc_distlist_out;
#ifdef SNMP
	/* mib counters */
	counter				rc_ripRcvBadPkts;
	counter				rc_ripRcvBadRoutes;
	counter				rc_ripSentUpdates;
	counter				rc_ripRcvUpdates;
#endif
}RCIRC, *rcirc_pt;


/*circuit types */
#define RCIRC_ETH		1		    /* EHTERNET TYPE */
#define RCIRC_TR		2		    /* token ring type */
#define RCIRC_TRGRP     4           /* tkn rng- group addr*/
#define RCIRC_FDDI		8		    /* FDDI */
#define RCIRC_P2MP		0x40		/* pt 2 multipt */
#define RCIRC_LEM		0x80		/* lan emulation (nbma)*/
#define RCIRC_LAN		0xff	    /* any multiaccess */

#define RCIRC_PTPT		0x100	    /* leased line or direct */

/*circuit states */
#define RCIRC_DOWN		1		    /* initial state */
#define RCIRC_UP		2		    /* alive */


/* ripv2 modes */
#define R2M_TXOFF		1
#define R2M_TXV1		2
#define R2M_TXV1COMP	3
#define R2M_TXV2		4

#define R2M_RXV1		1
#define R2M_RXV2		2
#define R2M_RXV1V2		3


/* routing metric defaults */
#define METRIC_DEF	    0	        /* default metric */

/* links in route struct used for garbage collect list,
   linked list independent of FDB organization
*/
#ifdef IP_USE_PTREE
#define iprt_gfwd       iprt_bwd
#define iprt_gbwd       iprt_llink
#else
#define iprt_gfwd       iprt_fwd
#define iprt_gbwd       iprt_bwd
#endif

#define RIP_AUTH_NONE	1
#define RIP_AUTH_SIMPLE	2
#define RIP_AUTH_MD5	3
#define RIP_DEF_AUTH	RIP_AUTH_NONE

/* neighbor struct for implementing rfc1724 peer group */
typedef struct rip_nbr{
	struct      rip_nbr *n_fwd;
	struct      rip_nbr *n_bwd;
	rripa		n_ipa;
	int 		n_version;
	dword	    n_tstamp;
	counter	    n_badpackets;
	counter	    n_badroutes;
}RNEIGH;

#endif /* _RIP_H */