1 /*!\file netinet6/ip6_mrou.h
5 /* $FreeBSD: src/sys/netinet6/ip6_mroute.h,v 1.5 2002/04/19 04:46:23 suz Exp $ */
6 /* $KAME: ip6_mroute.h,v 1.19 2001/06/14 06:12:55 suz Exp $ */
9 * Copyright (C) 1998 WIDE Project.
10 * All rights reserved.
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13 * modification, are permitted provided that the following conditions
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the project nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
24 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 /* BSDI ip_mroute.h,v 2.5 1996/10/11 16:01:48 pjd Exp */
40 * Definitions for IP multicast forwarding.
42 * Written by David Waitzman, BBN Labs, August 1988.
43 * Modified by Steve Deering, Stanford, February 1989.
44 * Modified by Ajit Thyagarajan, PARC, August 1993.
45 * Modified by Ajit Thyagarajan, PARC, August 1994.
46 * Modified by Ahmed Helmy, USC, September 1996.
48 * MROUTING Revision: 1.2
51 #ifndef _NETINET6_IP6_MROUTE_H_
52 #define _NETINET6_IP6_MROUTE_H_
55 * Multicast Routing set/getsockopt commands.
58 #define MRT6_OINIT 100 /* initialize forwarder (omrt6msg) */
60 #define MRT6_DONE 101 /* shut down forwarder */
61 #define MRT6_ADD_MIF 102 /* add multicast interface */
62 #define MRT6_DEL_MIF 103 /* delete multicast interface */
63 #define MRT6_ADD_MFC 104 /* insert forwarding cache entry */
64 #define MRT6_DEL_MFC 105 /* delete forwarding cache entry */
65 #define MRT6_PIM 107 /* enable pim code */
66 #define MRT6_INIT 108 /* initialize forwarder (mrt6msg) */
69 #define GET_TIME(t) microtime(&t)
71 #define GET_TIME(t) uniqtime(&t)
73 #define GET_TIME(t) ((t) = time)
77 * Types and macros for handling bitmaps with one bit per multicast interface.
79 typedef u_short mifi_t; /* type of a mif index */
83 #define IF_SETSIZE 256
86 typedef u_int32_t if_mask;
87 #define NIFBITS (sizeof(if_mask) * NBBY) /* bits per mask */
90 #define howmany(x, y) (((x) + ((y) - 1)) / (y))
93 typedef struct if_set {
94 if_mask ifs_bits[howmany(IF_SETSIZE, NIFBITS)];
97 #define IF_SET(n, p) ((p)->ifs_bits[(n)/NIFBITS] |= (1 << ((n) % NIFBITS)))
98 #define IF_CLR(n, p) ((p)->ifs_bits[(n)/NIFBITS] &= ~(1 << ((n) % NIFBITS)))
99 #define IF_ISSET(n, p) ((p)->ifs_bits[(n)/NIFBITS] & (1 << ((n) % NIFBITS)))
100 #define IF_COPY(f, t) bcopy(f, t, sizeof(*(f)))
101 #define IF_ZERO(p) bzero(p, sizeof(*(p)))
104 * Argument structure for MRT6_ADD_IF.
107 mifi_t mif6c_mifi; /* the index of the mif to be added */
108 u_char mif6c_flags; /* MIFF_ flags defined below */
109 u_short mif6c_pifi; /* the index of the physical IF */
111 u_int mif6c_rate_limit; /* max rate */
115 #define MIFF_REGISTER 0x1 /* mif represents a register end-point */
118 * Argument structure for MRT6_ADD_MFC and MRT6_DEL_MFC
121 struct sockaddr_in6 mf6cc_origin; /* IPv6 origin of mcasts */
122 struct sockaddr_in6 mf6cc_mcastgrp; /* multicast group associated */
123 mifi_t mf6cc_parent; /* incoming ifindex */
124 struct if_set mf6cc_ifset; /* set of forwarding ifs */
128 * The kernel's multicast routing statistics.
131 u_quad_t mrt6s_mfc_lookups; /* # forw. cache hash table hits */
132 u_quad_t mrt6s_mfc_misses; /* # forw. cache hash table misses */
133 u_quad_t mrt6s_upcalls; /* # calls to mrouted */
134 u_quad_t mrt6s_no_route; /* no route for packet's origin */
135 u_quad_t mrt6s_bad_tunnel; /* malformed tunnel options */
136 u_quad_t mrt6s_cant_tunnel; /* no room for tunnel options */
137 u_quad_t mrt6s_wrong_if; /* arrived on wrong interface */
138 u_quad_t mrt6s_upq_ovflw; /* upcall Q overflow */
139 u_quad_t mrt6s_cache_cleanups; /* # entries with no upcalls */
140 u_quad_t mrt6s_drop_sel; /* pkts dropped selectively */
141 u_quad_t mrt6s_q_overflow; /* pkts dropped - Q overflow */
142 u_quad_t mrt6s_pkt2large; /* pkts dropped - size > BKT SIZE */
143 u_quad_t mrt6s_upq_sockfull; /* upcalls dropped - socket full */
148 * Struct used to communicate from kernel to multicast router
149 * note the convenient similarity to an IPv6 header.
150 * XXX old version, superseded by mrt6msg.
154 u_char im6_msgtype; /* what type of message */
156 #define MRT6MSG_NOCACHE 1
157 #define MRT6MSG_WRONGMIF 2
158 #define MRT6MSG_WHOLEPKT 3 /* used for user level encap*/
160 u_char im6_mbz; /* must be zero */
161 u_char im6_mif; /* mif rec'd on */
163 struct in6_addr im6_src, im6_dst;
168 * Structure used to communicate from kernel to multicast router.
169 * We'll overlay the structure onto an MLD header (not an IPv6 header
170 * like igmpmsg{} used for IPv4 implementation). This is because this
171 * structure will be passed via an IPv6 raw socket, on which an application
172 * will only receive the payload i.e. the data after the IPv6 header and all
173 * the extension headers. (see Section 3 of draft-ietf-ipngwg-2292bis-01)
176 #define MRT6MSG_NOCACHE 1
177 #define MRT6MSG_WRONGMIF 2
178 #define MRT6MSG_WHOLEPKT 3 /* used for user level encap*/
179 u_char im6_mbz; /* must be zero */
180 u_char im6_msgtype; /* what type of message */
181 u_int16_t im6_mif; /* mif rec'd on */
182 u_int32_t im6_pad; /* padding for 64bit arch */
183 struct in6_addr im6_src, im6_dst;
187 * Argument structure used by multicast routing daemon to get src-grp
190 struct sioc_sg_req6 {
191 struct sockaddr_in6 src;
192 struct sockaddr_in6 grp;
199 * Argument structure used by mrouted to get mif pkt counts
201 struct sioc_mif_req6 {
202 mifi_t mifi; /* mif number */
203 u_quad_t icount; /* Input packet count on mif */
204 u_quad_t ocount; /* Output packet count on mif */
205 u_quad_t ibytes; /* Input byte count on mif */
206 u_quad_t obytes; /* Output byte count on mif */
209 #if defined(_KERNEL) || defined(KERNEL)
211 * The kernel's multicast-interface structure.
214 u_char m6_flags; /* MIFF_ flags defined above */
215 u_int m6_rate_limit; /* max rate */
217 struct tbf *m6_tbf; /* token bucket structure at intf. */
219 struct in6_addr m6_lcl_addr; /* local interface address */
220 struct ifnet *m6_ifp; /* pointer to interface */
221 u_quad_t m6_pkt_in; /* # pkts in on interface */
222 u_quad_t m6_pkt_out; /* # pkts out on interface */
223 u_quad_t m6_bytes_in; /* # bytes in on interface */
224 u_quad_t m6_bytes_out; /* # bytes out on interface */
225 struct route_in6 m6_route;/* cached route if this is a tunnel */
227 u_int m6_rsvp_on; /* RSVP listening on this vif */
228 struct socket *m6_rsvpd; /* RSVP daemon socket */
233 * The kernel's multicast forwarding cache entry structure
236 struct sockaddr_in6 mf6c_origin; /* IPv6 origin of mcasts */
237 struct sockaddr_in6 mf6c_mcastgrp; /* multicast group associated*/
238 mifi_t mf6c_parent; /* incoming IF */
239 struct if_set mf6c_ifset; /* set of outgoing IFs */
241 u_quad_t mf6c_pkt_cnt; /* pkt count for src-grp */
242 u_quad_t mf6c_byte_cnt; /* byte count for src-grp */
243 u_quad_t mf6c_wrong_if; /* wrong if for src-grp */
244 int mf6c_expire; /* time to clean entry up */
245 struct timeval mf6c_last_assert; /* last time I sent an assert*/
246 struct rtdetq *mf6c_stall; /* pkts waiting for route */
247 struct mf6c *mf6c_next; /* hash table linkage */
250 #define MF6C_INCOMPLETE_PARENT ((mifi_t)-1)
253 * Argument structure used for pkt info. while upcall is made
255 #ifndef _NETINET_IP_MROUTE_H_
256 struct rtdetq { /* XXX: rtdetq is also defined in ip_mroute.h */
257 struct mbuf *m; /* A copy of the packet */
258 struct ifnet *ifp; /* Interface pkt came in on */
260 struct timeval t; /* Timestamp */
261 #endif /* UPCALL_TIMING */
264 #endif /* _NETINET_IP_MROUTE_H_ */
266 #define MF6CTBLSIZ 256
267 #if (MF6CTBLSIZ & (MF6CTBLSIZ - 1)) == 0 /* from sys:route.h */
268 #define MF6CHASHMOD(h) ((h) & (MF6CTBLSIZ - 1))
270 #define MF6CHASHMOD(h) ((h) % MF6CTBLSIZ)
273 #define MAX_UPQ6 4 /* max. no of pkts in upcall Q */
275 int ip6_mrouter_set __P((struct socket *so, struct sockopt *sopt));
276 int ip6_mrouter_get __P((struct socket *so, struct sockopt *sopt));
277 int ip6_mrouter_done __P((void));
278 int mrt6_ioctl __P((int, caddr_t));
281 #endif /* !_NETINET6_IP6_MROUTE_H_ */