BSD 4_3_Reno release

[unix-history] / usr / src / sbin / 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: (1) source distributions retain this entire copyright
* notice and comment, and (2) distributions including binaries display
* the following acknowledgement:  ``This product includes software
* developed by the University of California, Berkeley and its contributors''
* in the documentation or other materials provided with the distribution
* and in all advertising materials mentioning features or use of this
* software. Neither the name of the University nor the names of its
* contributors may 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 MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*
*      @(#)af.h        5.7 (Berkeley) 6/1/90
*/

/*
* 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 */