ip_mrout.h

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/*
 * Copyright (c) 1989 Stephen Deering.
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Stephen Deering of Stanford University.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)ip_mroute.h	8.1 (Berkeley) 6/10/93
 * $Id: ip_mroute.h,v 1.7.4.1 1995/09/06 10:31:39 davidg Exp $
 */

#ifndef _NETINET_IP_MROUTE_H_
#define _NETINET_IP_MROUTE_H_

/*
 * Definitions for IP multicast forwarding.
 *
 * Written by David Waitzman, BBN Labs, August 1988.
 * Modified by Steve Deering, Stanford, February 1989.
 * Modified by Ajit Thyagarajan, PARC, August 1993.
 * Modified by Ajit Thyagarajan, PARC, August 1994.
 *
 * MROUTING Revision: 3.3.1.3
 */


/*
 * Multicast Routing set/getsockopt commands.
 */
#define	MRT_INIT	100	/* initialize forwarder */
#define	MRT_DONE	101	/* shut down forwarder */
#define	MRT_ADD_VIF	102	/* create virtual interface */
#define	MRT_DEL_VIF	103	/* delete virtual interface */
#define MRT_ADD_MFC	104	/* insert forwarding cache entry */
#define MRT_DEL_MFC	105	/* delete forwarding cache entry */
#define MRT_VERSION	106	/* get kernel version number */
#define MRT_ASSERT      107     /* enable PIM assert processing */


#define GET_TIME(t)	microtime(&t)

/*
 * Types and macros for handling bitmaps with one bit per virtual interface.
 */
#define	MAXVIFS 32
typedef u_long vifbitmap_t;
typedef u_short vifi_t;		/* type of a vif index */
#define ALL_VIFS (vifi_t)-1

#define	VIFM_SET(n, m)		((m) |= (1 << (n)))
#define	VIFM_CLR(n, m)		((m) &= ~(1 << (n)))
#define	VIFM_ISSET(n, m)	((m) & (1 << (n)))
#define	VIFM_CLRALL(m)		((m) = 0x00000000)
#define	VIFM_COPY(mfrom, mto)	((mto) = (mfrom))
#define	VIFM_SAME(m1, m2)	((m1) == (m2))


/*
 * Argument structure for MRT_ADD_VIF.
 * (MRT_DEL_VIF takes a single vifi_t argument.)
 */
struct vifctl {
	vifi_t	vifc_vifi;	    	/* the index of the vif to be added */
	u_char	vifc_flags;     	/* VIFF_ flags defined below */
	u_char	vifc_threshold; 	/* min ttl required to forward on vif */
	u_int	vifc_rate_limit;	/* max rate */
	struct	in_addr vifc_lcl_addr;	/* local interface address */
	struct	in_addr vifc_rmt_addr;	/* remote address (tunnels only) */
};

#define	VIFF_TUNNEL	0x1		/* vif represents a tunnel end-point */
#define VIFF_SRCRT	0x2		/* tunnel uses IP source routing */

/*
 * Argument structure for MRT_ADD_MFC and MRT_DEL_MFC
 * (mfcc_tos to be added at a future point)
 */
struct mfcctl {
    struct in_addr  mfcc_origin;		/* ip origin of mcasts       */
    struct in_addr  mfcc_mcastgrp; 		/* multicast group associated*/
    vifi_t	    mfcc_parent;   		/* incoming vif              */
    u_char	    mfcc_ttls[MAXVIFS]; 	/* forwarding ttls on vifs   */
};

#endif /* _NETINET_IP_MROUTE_H_ */