[unix-history] / usr / src / sbin / routed / table.h

/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)table.h	5.6 (Berkeley) %G%
 */

/*
 * Routing table management daemon.
 */

/*
 * Routing table structure; differs a bit from kernel tables.
 *
 * Note: the union below must agree in the first 4 members
 * so the ioctl's will work.
 */
struct rthash {
	struct	rt_entry *rt_forw;
	struct	rt_entry *rt_back;
};

struct rt_entry {
	struct	rt_entry *rt_forw;
	struct	rt_entry *rt_back;
	union {
		struct	rtentry rtu_rt;
		struct {
			u_long	rtu_hash;
			struct	sockaddr rtu_dst;
			struct	sockaddr rtu_router;
			short	rtu_flags;
			short	rtu_state;
			int	rtu_timer;
			int	rtu_metric;
			int	rtu_ifmetric;
			struct	interface *rtu_ifp;
		} rtu_entry;
	} rt_rtu;
};

#define	rt_rt		rt_rtu.rtu_rt			/* pass to ioctl */
#define	rt_hash		rt_rtu.rtu_entry.rtu_hash	/* for net or host */
#define	rt_dst		rt_rtu.rtu_entry.rtu_dst	/* match value */
#define	rt_router	rt_rtu.rtu_entry.rtu_router	/* who to forward to */
#define	rt_flags	rt_rtu.rtu_entry.rtu_flags	/* kernel flags */
#define	rt_timer	rt_rtu.rtu_entry.rtu_timer	/* for invalidation */
#define	rt_state	rt_rtu.rtu_entry.rtu_state	/* see below */
#define	rt_metric	rt_rtu.rtu_entry.rtu_metric	/* cost of route */
#define	rt_ifmetric	rt_rtu.rtu_entry.rtu_ifmetric	/* cost of route if */
#define	rt_ifp		rt_rtu.rtu_entry.rtu_ifp	/* interface to take */

#define	ROUTEHASHSIZ	32		/* must be a power of 2 */
#define	ROUTEHASHMASK	(ROUTEHASHSIZ - 1)

/*
 * "State" of routing table entry.
 */
#define	RTS_CHANGED	0x1		/* route has been altered recently */
#define	RTS_EXTERNAL	0x2		/* extern info, not installed or sent */
#define	RTS_INTERNAL	0x4		/* internal route, not installed */
#define	RTS_PASSIVE	IFF_PASSIVE	/* don't time out route */
#define	RTS_INTERFACE	IFF_INTERFACE	/* route is for network interface */
#define	RTS_REMOTE	IFF_REMOTE	/* route is for ``remote'' entity */
#define	RTS_SUBNET	IFF_SUBNET	/* route is for network subnet */

/*
 * Flags are same as kernel, with this addition for af_rtflags:
 */
#define	RTF_SUBNET	0x8000		/* pseudo: route to subnet */

struct	rthash nethash[ROUTEHASHSIZ];
struct	rthash hosthash[ROUTEHASHSIZ];
struct	rt_entry *rtlookup();
struct	rt_entry *rtfind();
Commit	Line	Data
5ff67f98 DF	1	/*
5ff67f98 DF	2	* Copyright (c) 1983 Regents of the University of California.
0eb85d71	3	* All rights reserved.
5ff67f98	4	*
0eb85d71	5	* Redistribution and use in source and binary forms are permitted
b8c620d6 KB	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
0eb85d71	16	*
b8c620d6	17	* @(#)table.h 5.6 (Berkeley) %G%
5ff67f98	18	*/
d03054c7 SL	19
	20	/*
	21	* Routing table management daemon.
	22	*/
	23
	24	/*
	25	* Routing table structure; differs a bit from kernel tables.
	26	*
	27	* Note: the union below must agree in the first 4 members
	28	* so the ioctl's will work.
	29	*/
	30	struct rthash {
	31	struct rt_entry *rt_forw;
	32	struct rt_entry *rt_back;
	33	};
	34
	35	struct rt_entry {
	36	struct rt_entry *rt_forw;
	37	struct rt_entry *rt_back;
	38	union {
	39	struct rtentry rtu_rt;
	40	struct {
	41	u_long rtu_hash;
	42	struct sockaddr rtu_dst;
	43	struct sockaddr rtu_router;
	44	short rtu_flags;
	45	short rtu_state;
	46	int rtu_timer;
	47	int rtu_metric;
88709531	48	int rtu_ifmetric;
d03054c7 SL	49	struct interface *rtu_ifp;
	50	} rtu_entry;
	51	} rt_rtu;
	52	};
	53
	54	#define rt_rt rt_rtu.rtu_rt /* pass to ioctl */
	55	#define rt_hash rt_rtu.rtu_entry.rtu_hash /* for net or host */
	56	#define rt_dst rt_rtu.rtu_entry.rtu_dst /* match value */
	57	#define rt_router rt_rtu.rtu_entry.rtu_router /* who to forward to */
	58	#define rt_flags rt_rtu.rtu_entry.rtu_flags /* kernel flags */
	59	#define rt_timer rt_rtu.rtu_entry.rtu_timer /* for invalidation */
	60	#define rt_state rt_rtu.rtu_entry.rtu_state /* see below */
	61	#define rt_metric rt_rtu.rtu_entry.rtu_metric /* cost of route */
88709531	62	#define rt_ifmetric rt_rtu.rtu_entry.rtu_ifmetric /* cost of route if */
d03054c7 SL	63	#define rt_ifp rt_rtu.rtu_entry.rtu_ifp /* interface to take */
d03054c7 SL	64
49139b80 MK	65	#define ROUTEHASHSIZ 32 /* must be a power of 2 */
49139b80 MK	66	#define ROUTEHASHMASK (ROUTEHASHSIZ - 1)
d03054c7 SL	67
	68	/*
	69	* "State" of routing table entry.
	70	*/
	71	#define RTS_CHANGED 0x1 /* route has been altered recently */
4fad5a6e MK	72	#define RTS_EXTERNAL 0x2 /* extern info, not installed or sent */
4fad5a6e MK	73	#define RTS_INTERNAL 0x4 /* internal route, not installed */
b7e4f8be MK	74	#define RTS_PASSIVE IFF_PASSIVE /* don't time out route */
	75	#define RTS_INTERFACE IFF_INTERFACE /* route is for network interface */
	76	#define RTS_REMOTE IFF_REMOTE /* route is for ``remote'' entity */
4fad5a6e MK	77	#define RTS_SUBNET IFF_SUBNET /* route is for network subnet */
	78
	79	/*
	80	* Flags are same as kernel, with this addition for af_rtflags:
	81	*/
	82	#define RTF_SUBNET 0x8000 /* pseudo: route to subnet */
d03054c7 SL	83
	84	struct rthash nethash[ROUTEHASHSIZ];
	85	struct rthash hosthash[ROUTEHASHSIZ];
	86	struct rt_entry *rtlookup();
	87	struct rt_entry *rtfind();