BSD 4_3_Net_1 release

[unix-history] / routed / af.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.
 *
 *	@(#)af.h	5.6 (Berkeley) 6/18/88
 */

/*
 * Routing table management daemon.
 */

/*
 * Per address family routines.
 */
struct afswitch {
	int	(*af_hash)();		/* returns keys based on address */
	int	(*af_netmatch)();	/* verifies net # matching */
	int	(*af_output)();		/* interprets address for sending */
	int	(*af_portmatch)();	/* packet from some other router? */
	int	(*af_portcheck)();	/* packet from privileged peer? */
	int	(*af_checkhost)();	/* tells if address is valid */
	int	(*af_rtflags)();	/* get flags for route (host or net) */
	int	(*af_sendroute)();	/* check bounds of subnet broadcast */
	int	(*af_canon)();		/* canonicalize address for compares */
	char	*(*af_format)();	/* convert address to string */
};

/*
 * Structure returned by af_hash routines.
 */
struct afhash {
	u_int	afh_hosthash;		/* host based hash */
	u_int	afh_nethash;		/* network based hash */
};

struct	afswitch afswitch[];		/* table proper */
int	af_max;				/* number of entries in table */