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1/* $FreeBSD: head/sys/netinet6/ip6_mroute.h 62587 2000-07-04 16:35:15Z itojun $ */
2/* $KAME: ip6_mroute.h,v 1.10 2000/05/19 02:38:53 itojun Exp $ */
3
4/*
5 * Copyright (C) 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright

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23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33/* BSDI ip_mroute.h,v 2.5 1996/10/11 16:01:48 pjd Exp */
34
35/*
36 * Definitions for IP multicast forwarding.
37 *
38 * Written by David Waitzman, BBN Labs, August 1988.
39 * Modified by Steve Deering, Stanford, February 1989.
40 * Modified by Ajit Thyagarajan, PARC, August 1993.
41 * Modified by Ajit Thyagarajan, PARC, August 1994.
42 * Modified by Ahmed Helmy, USC, September 1996.
43 *
44 * MROUTING Revision: 1.2
45 */
46
47#ifndef _NETINET6_IP6_MROUTE_H_
48#define _NETINET6_IP6_MROUTE_H_
49
50/*
51 * Multicast Routing set/getsockopt commands.
52 */
53#ifdef _KERNEL
54#define MRT6_OINIT 100 /* initialize forwarder (omrt6msg) */
55#endif
56#define MRT6_DONE 101 /* shut down forwarder */
57#define MRT6_ADD_MIF 102 /* add multicast interface */
58#define MRT6_DEL_MIF 103 /* delete multicast interface */
59#define MRT6_ADD_MFC 104 /* insert forwarding cache entry */
60#define MRT6_DEL_MFC 105 /* delete forwarding cache entry */
61#define MRT6_PIM 107 /* enable pim code */
62#define MRT6_INIT 108 /* initialize forwarder (mrt6msg) */
63
64#if BSD >= 199103
65#define GET_TIME(t) microtime(&t)
66#elif defined(sun)
67#define GET_TIME(t) uniqtime(&t)
68#else
69#define GET_TIME(t) ((t) = time)
70#endif
71
72/*

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134 u_quad_t mrt6s_upq_ovflw; /* upcall Q overflow */
135 u_quad_t mrt6s_cache_cleanups; /* # entries with no upcalls */
136 u_quad_t mrt6s_drop_sel; /* pkts dropped selectively */
137 u_quad_t mrt6s_q_overflow; /* pkts dropped - Q overflow */
138 u_quad_t mrt6s_pkt2large; /* pkts dropped - size > BKT SIZE */
139 u_quad_t mrt6s_upq_sockfull; /* upcalls dropped - socket full */
140};
141
142#ifdef MRT6_OINIT
143/*
144 * Struct used to communicate from kernel to multicast router
145 * note the convenient similarity to an IPv6 header.
146 * XXX old version, superseded by mrt6msg.
147 */
148struct omrt6msg {
149 u_long unused1;
150 u_char im6_msgtype; /* what type of message */
151#if 0
152#define MRT6MSG_NOCACHE 1
153#define MRT6MSG_WRONGMIF 2
154#define MRT6MSG_WHOLEPKT 3 /* used for user level encap*/
155#endif
156 u_char im6_mbz; /* must be zero */
157 u_char im6_mif; /* mif rec'd on */
158 u_char unused2;
159 struct in6_addr im6_src, im6_dst;
160};
161#endif
162
163/*
164 * Structure used to communicate from kernel to multicast router.
165 * We'll overlay the structure onto an MLD header (not an IPv6 header
166 * like igmpmsg{} used for IPv4 implementation). This is because this
167 * structure will be passed via an IPv6 raw socket, on which an application
168 * will only receive the payload i.e. the data after the IPv6 header and all
169 * the extension headers. (see Section 3 of draft-ietf-ipngwg-2292bis-01)
170 */
171struct mrt6msg {
172#define MRT6MSG_NOCACHE 1
173#define MRT6MSG_WRONGMIF 2
174#define MRT6MSG_WHOLEPKT 3 /* used for user level encap*/
175 u_char im6_mbz; /* must be zero */
176 u_char im6_msgtype; /* what type of message */
177 u_int16_t im6_mif; /* mif rec'd on */
178 u_int32_t im6_pad; /* padding for 64bit arch */
179 struct in6_addr im6_src, im6_dst;
180};
181
182/*
183 * Argument structure used by multicast routing daemon to get src-grp
184 * packet counts
185 */
186struct sioc_sg_req6 {
187 struct sockaddr_in6 src;
188 struct sockaddr_in6 grp;
189 u_quad_t pktcnt;
190 u_quad_t bytecnt;

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206/*
207 * The kernel's multicast-interface structure.
208 */
209struct mif6 {
210 u_char m6_flags; /* MIFF_ flags defined above */
211 u_int m6_rate_limit; /* max rate */
212#ifdef notyet
213 struct tbf *m6_tbf; /* token bucket structure at intf. */
214#endif
215 struct in6_addr m6_lcl_addr; /* local interface address */
216 struct ifnet *m6_ifp; /* pointer to interface */
217 u_quad_t m6_pkt_in; /* # pkts in on interface */
218 u_quad_t m6_pkt_out; /* # pkts out on interface */
219 u_quad_t m6_bytes_in; /* # bytes in on interface */
220 u_quad_t m6_bytes_out; /* # bytes out on interface */
221 struct route_in6 m6_route;/* cached route if this is a tunnel */
222#ifdef notyet
223 u_int m6_rsvp_on; /* RSVP listening on this vif */
224 struct socket *m6_rsvpd; /* RSVP daemon socket */
225#endif
226};
227
228/*
229 * The kernel's multicast forwarding cache entry structure
230 */
231struct mf6c {
232 struct sockaddr_in6 mf6c_origin; /* IPv6 origin of mcasts */
233 struct sockaddr_in6 mf6c_mcastgrp; /* multicast group associated*/
234 mifi_t mf6c_parent; /* incoming IF */
235 struct if_set mf6c_ifset; /* set of outgoing IFs */
236
237 u_quad_t mf6c_pkt_cnt; /* pkt count for src-grp */

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263#if (MF6CTBLSIZ & (MF6CTBLSIZ - 1)) == 0 /* from sys:route.h */
264#define MF6CHASHMOD(h) ((h) & (MF6CTBLSIZ - 1))
265#else
266#define MF6CHASHMOD(h) ((h) % MF6CTBLSIZ)
267#endif
268
269#define MAX_UPQ6 4 /* max. no of pkts in upcall Q */
270
271int ip6_mrouter_set __P((struct socket *so, struct sockopt *sopt));
272int ip6_mrouter_get __P((struct socket *so, struct sockopt *sopt));
273int ip6_mrouter_done __P((void));
274int mrt6_ioctl __P((int, caddr_t));
275#endif /* _KERNEL */
276
277#endif /* !_NETINET6_IP6_MROUTE_H_ */