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/* $OpenBSD: ip6_mroute.h,v 1.13 2013/10/29 19:05:45 deraadt Exp $ */
/* $KAME: ip6_mroute.h,v 1.17 2001/02/10 02:05:52 itojun 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.
*/
/*
* 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.
*/
#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) */
/*
* 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
/*
* Assume inclusion of sys/param.h or sys/select.h for howmany()
*/
#define __NIFBITS (sizeof(uint32_t) * 8) /* bits per mask */
typedef struct if_set {
uint32_t ifs_bits[howmany(256, __NIFBITS)];
} if_set;
#define IF_SET(n, p) \
((p)->ifs_bits[(n)/__NIFBITS] |= (1U << ((n) % __NIFBITS)))
#define IF_CLR(n, p) \
((p)->ifs_bits[(n)/__NIFBITS] &= ~(1U << ((n) % __NIFBITS)))
#define IF_ISSET(n, p) \
((p)->ifs_bits[(n)/__NIFBITS] & (1U << ((n) % __NIFBITS)))
#define IF_COPY(f, t) memcpy(t, f, sizeof(*(f)))
#define IF_ZERO(p) memset(p, 0, 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_int64_t mrt6s_mfc_lookups; /* # forw. cache hash table hits */
u_int64_t mrt6s_mfc_misses; /* # forw. cache hash table misses */
u_int64_t mrt6s_upcalls; /* # calls to mrouted */
u_int64_t mrt6s_no_route; /* no route for packet's origin */
u_int64_t mrt6s_bad_tunnel; /* malformed tunnel options */
u_int64_t mrt6s_cant_tunnel; /* no room for tunnel options */
u_int64_t mrt6s_wrong_if; /* arrived on wrong interface */
u_int64_t mrt6s_upq_ovflw; /* upcall Q overflow */
u_int64_t mrt6s_cache_cleanups; /* # entries with no upcalls */
u_int64_t mrt6s_drop_sel; /* pkts dropped selectively */
u_int64_t mrt6s_q_overflow; /* pkts dropped - Q overflow */
u_int64_t mrt6s_pkt2large; /* pkts dropped - size > BKT SIZE */
u_int64_t mrt6s_upq_sockfull; /* upcalls dropped - socket full */
};
/*
* 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_int64_t pktcnt;
u_int64_t bytecnt;
u_int64_t wrong_if;
};
/*
* Argument structure used by mrouted to get mif pkt counts
*/
struct sioc_mif_req6 {
mifi_t mifi; /* mif number */
u_int64_t icount; /* Input packet count on mif */
u_int64_t ocount; /* Output packet count on mif */
u_int64_t ibytes; /* Input byte count on mif */
u_int64_t obytes; /* Output byte count on mif */
};
#if 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_int64_t m6_pkt_in; /* # pkts in on interface */
u_int64_t m6_pkt_out; /* # pkts out on interface */
u_int64_t m6_bytes_in; /* # bytes in on interface */
u_int64_t m6_bytes_out; /* # bytes out on interface */
struct route_in6 m6_route;/* cached route if this is a tunnel */
};
/*
* 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_int64_t mf6c_pkt_cnt; /* pkt count for src-grp */
u_int64_t mf6c_byte_cnt; /* byte count for src-grp */
u_int64_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 */
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(int, struct socket *, struct mbuf *);
int ip6_mrouter_get(int, struct socket *, struct mbuf **);
int ip6_mrouter_done(void);
void ip6_mrouter_detach(struct ifnet *);
int mrt6_ioctl(u_long, caddr_t);
#endif /* _KERNEL */
#endif /* !_NETINET6_IP6_MROUTE_H_ */
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