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/*!\file netinet6/ip6_mrou.h

 *

 */

/*      $FreeBSD: src/sys/netinet6/ip6_mroute.h,v 1.5 2002/04/19 04:46:23 suz Exp $     */

/*	$KAME: ip6_mroute.h,v 1.19 2001/06/14 06:12:55 suz Exp $	*/

/*

 * Copyright (C) 1998 WIDE Project.

 * All rights reserved.

 *

 * 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. Neither the name of the project 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 PROJECT 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 PROJECT 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.

 */

/*	BSDI ip_mroute.h,v 2.5 1996/10/11 16:01:48 pjd Exp	*/

/*

 * 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.

 * Modified by Ahmed Helmy, USC, September 1996.

 *

 * MROUTING Revision: 1.2

 */

#ifndef _NETINET6_IP6_MROUTE_H_

#define _NETINET6_IP6_MROUTE_H_

/*

 * Multicast Routing set/getsockopt commands.

 */

#ifdef _KERNEL

#define MRT6_OINIT		100	/* initialize forwarder (omrt6msg) */

#endif

#define MRT6_DONE		101	/* shut down forwarder */

#define MRT6_ADD_MIF		102	/* add multicast interface */

#define MRT6_DEL_MIF		103	/* delete multicast interface */

#define MRT6_ADD_MFC		104	/* insert forwarding cache entry */

#define MRT6_DEL_MFC		105	/* delete forwarding cache entry */

#define MRT6_PIM                107     /* enable pim code */

#define MRT6_INIT		108	/* initialize forwarder (mrt6msg) */

#if BSD >= 199103

#define GET_TIME(t)	microtime(&t)

#elif defined(sun)

#define GET_TIME(t)	uniqtime(&t)

#else

#define GET_TIME(t)	((t) = time)

#endif

/*

 * Types and macros for handling bitmaps with one bit per multicast interface.

 */

typedef u_short mifi_t;		/* type of a mif index */

#define MAXMIFS		64

#ifndef	IF_SETSIZE

#define	IF_SETSIZE	256

#endif

typedef	u_int32_t	if_mask;

#define	NIFBITS	(sizeof(if_mask) * NBBY)	/* bits per mask */

#ifndef howmany

#define	howmany(x, y)	(((x) + ((y) - 1)) / (y))

#endif

typedef	struct if_set {

	if_mask	ifs_bits[howmany(IF_SETSIZE, NIFBITS)];

} if_set;

#define	IF_SET(n, p)	((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))

#define	IF_CLR(n, p)	((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))

#define	IF_ISSET(n, p)	((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))

#define	IF_COPY(f, t)	bcopy(f, t, sizeof(*(f)))

#define	IF_ZERO(p)	bzero(p, sizeof(*(p)))

/*

 * Argument structure for MRT6_ADD_IF.

 */

struct mif6ctl {

	mifi_t	    mif6c_mifi;	    	/* the index of the mif to be added  */

	u_char	    mif6c_flags;     	/* MIFF_ flags defined below         */

	u_short	    mif6c_pifi;		/* the index of the physical IF */

#ifdef notyet

	u_int	    mif6c_rate_limit;    /* max rate           		     */

#endif

};

#define	MIFF_REGISTER	0x1	/* mif represents a register end-point */

/*

 * Argument structure for MRT6_ADD_MFC and MRT6_DEL_MFC

 */

struct mf6cctl {

	struct sockaddr_in6 mf6cc_origin;	/* IPv6 origin of mcasts */

	struct sockaddr_in6 mf6cc_mcastgrp; /* multicast group associated */

	mifi_t		mf6cc_parent;	/* incoming ifindex */

	struct if_set	mf6cc_ifset;	/* set of forwarding ifs */

};

/*

 * The kernel's multicast routing statistics.

 */

struct mrt6stat {

	u_quad_t mrt6s_mfc_lookups;	/* # forw. cache hash table hits   */

	u_quad_t mrt6s_mfc_misses;	/* # forw. cache hash table misses */

	u_quad_t mrt6s_upcalls;		/* # calls to mrouted              */

	u_quad_t mrt6s_no_route;	/* no route for packet's origin    */

	u_quad_t mrt6s_bad_tunnel;	/* malformed tunnel options        */

	u_quad_t mrt6s_cant_tunnel;	/* no room for tunnel options      */

	u_quad_t mrt6s_wrong_if;	/* arrived on wrong interface	   */

	u_quad_t mrt6s_upq_ovflw;	/* upcall Q overflow		   */

	u_quad_t mrt6s_cache_cleanups;	/* # entries with no upcalls 	   */

	u_quad_t mrt6s_drop_sel;     	/* pkts dropped selectively        */

	u_quad_t mrt6s_q_overflow;    	/* pkts dropped - Q overflow       */

	u_quad_t mrt6s_pkt2large;     	/* pkts dropped - size > BKT SIZE  */

	u_quad_t mrt6s_upq_sockfull;	/* upcalls dropped - socket full   */

};

#ifdef MRT6_OINIT

/*

 * Struct used to communicate from kernel to multicast router

 * note the convenient similarity to an IPv6 header.

 * XXX old version, superseded by mrt6msg.

 */

struct omrt6msg {

	u_long	    unused1;

	u_char	    im6_msgtype;		/* what type of message	    */

#if 0

#define MRT6MSG_NOCACHE	1

#define MRT6MSG_WRONGMIF	2

#define MRT6MSG_WHOLEPKT	3		/* used for user level encap*/

#endif

	u_char	    im6_mbz;			/* must be zero		    */

	u_char	    im6_mif;			/* mif rec'd on		    */

	u_char	    unused2;

	struct in6_addr  im6_src, im6_dst;

};

#endif

/*

 * Structure used to communicate from kernel to multicast router.

 * We'll overlay the structure onto an MLD header (not an IPv6 header

 * like igmpmsg{} used for IPv4 implementation). This is because this

 * structure will be passed via an IPv6 raw socket, on which an application

 * will only receive the payload i.e. the data after the IPv6 header and all

 * the extension headers. (see Section 3 of draft-ietf-ipngwg-2292bis-01)

 */

struct mrt6msg {

#define MRT6MSG_NOCACHE		1

#define MRT6MSG_WRONGMIF	2

#define MRT6MSG_WHOLEPKT	3		/* used for user level encap*/

	u_char	    im6_mbz;			/* must be zero		    */

	u_char	    im6_msgtype;		/* what type of message	    */

	u_int16_t   im6_mif;			/* mif rec'd on		    */

	u_int32_t   im6_pad;			/* padding for 64bit arch   */

	struct in6_addr  im6_src, im6_dst;

};

/*

 * Argument structure used by multicast routing daemon to get src-grp

 * packet counts

 */

struct sioc_sg_req6 {

	struct sockaddr_in6 src;

	struct sockaddr_in6 grp;

	u_quad_t pktcnt;

	u_quad_t bytecnt;

	u_quad_t wrong_if;

};

/*

 * Argument structure used by mrouted to get mif pkt counts

 */

struct sioc_mif_req6 {

	mifi_t mifi;		/* mif number				*/

	u_quad_t icount;	/* Input packet count on mif		*/

	u_quad_t ocount;	/* Output packet count on mif		*/

	u_quad_t ibytes;	/* Input byte count on mif		*/

	u_quad_t obytes;	/* Output byte count on mif		*/

};

#if defined(_KERNEL) || defined(KERNEL)

/*

 * The kernel's multicast-interface structure.

 */

struct mif6 {

        u_char   	m6_flags;     	/* MIFF_ flags defined above         */

	u_int      	m6_rate_limit; 	/* max rate			     */

#ifdef notyet

	struct tbf      *m6_tbf;      	/* token bucket structure at intf.   */

#endif

	struct in6_addr	m6_lcl_addr;   	/* local interface address           */

	struct ifnet    *m6_ifp;     	/* pointer to interface              */

	u_quad_t	m6_pkt_in;	/* # pkts in on interface            */

	u_quad_t	m6_pkt_out;	/* # pkts out on interface           */

	u_quad_t	m6_bytes_in;	/* # bytes in on interface	     */

	u_quad_t	m6_bytes_out;	/* # bytes out on interface	     */

	struct route_in6 m6_route;/* cached route if this is a tunnel */

#ifdef notyet

	u_int		m6_rsvp_on;	/* RSVP listening on this vif */

	struct socket   *m6_rsvpd;	/* RSVP daemon socket */

#endif

};

/*

 * The kernel's multicast forwarding cache entry structure

 */

struct mf6c {

	struct sockaddr_in6  mf6c_origin;	/* IPv6 origin of mcasts     */

	struct sockaddr_in6  mf6c_mcastgrp;	/* multicast group associated*/

	mifi_t	    	 mf6c_parent; 		/* incoming IF               */

	struct if_set	 mf6c_ifset;		/* set of outgoing IFs */

	u_quad_t    	mf6c_pkt_cnt;		/* pkt count for src-grp     */

	u_quad_t    	mf6c_byte_cnt;		/* byte count for src-grp    */

	u_quad_t    	mf6c_wrong_if;		/* wrong if for src-grp	     */

	int	    	mf6c_expire;		/* time to clean entry up    */

	struct timeval  mf6c_last_assert;	/* last time I sent an assert*/

	struct rtdetq  *mf6c_stall;		/* pkts waiting for route */

	struct mf6c    *mf6c_next;		/* hash table linkage */

};

#define MF6C_INCOMPLETE_PARENT ((mifi_t)-1)

/*

 * Argument structure used for pkt info. while upcall is made

 */

#ifndef _NETINET_IP_MROUTE_H_

struct rtdetq {		/* XXX: rtdetq is also defined in ip_mroute.h */

    struct mbuf 	*m;		/* A copy of the packet	    	    */

    struct ifnet	*ifp;		/* Interface pkt came in on 	    */

#ifdef UPCALL_TIMING

    struct timeval	t;		/* Timestamp */

#endif /* UPCALL_TIMING */

    struct rtdetq	*next;

};

#endif /* _NETINET_IP_MROUTE_H_ */

#define MF6CTBLSIZ	256

#if (MF6CTBLSIZ & (MF6CTBLSIZ - 1)) == 0	  /* from sys:route.h */

#define MF6CHASHMOD(h)	((h) & (MF6CTBLSIZ - 1))

#else

#define MF6CHASHMOD(h)	((h) % MF6CTBLSIZ)

#endif

#define MAX_UPQ6	4		/* max. no of pkts in upcall Q */

int	ip6_mrouter_set __P((struct socket *so, struct sockopt *sopt));

int	ip6_mrouter_get __P((struct socket *so, struct sockopt *sopt));

int	ip6_mrouter_done __P((void));

int	mrt6_ioctl __P((int, caddr_t));

#endif /* _KERNEL */

#endif /* !_NETINET6_IP6_MROUTE_H_ */