2 * Copyright (c) 1989 Stephen Deering.
3 * Copyright (c) 1992, 1993
4 * The Regents of the University of California. All rights reserved.
6 * This code is derived from software contributed to Berkeley by
7 * Stephen Deering of Stanford University.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the University of
20 * California, Berkeley and its contributors.
21 * 4. Neither the name of the University nor the names of its contributors
22 * may be used to endorse or promote products derived from this software
23 * without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37 * @(#)ip_mroute.h 8.1 (Berkeley) 6/10/93
38 * $FreeBSD: src/sys/netinet/ip_mroute.h,v 1.17.2.2 2002/11/20 23:20:55 luigi Exp $
39 * $DragonFly: src/sys/net/ip_mroute/ip_mroute.h,v 1.2 2003/06/17 04:28:51 dillon Exp $
42 #ifndef _NETINET_IP_MROUTE_H_
43 #define _NETINET_IP_MROUTE_H_
46 * Definitions for IP multicast forwarding.
48 * Written by David Waitzman, BBN Labs, August 1988.
49 * Modified by Steve Deering, Stanford, February 1989.
50 * Modified by Ajit Thyagarajan, PARC, August 1993.
51 * Modified by Ajit Thyagarajan, PARC, August 1994.
53 * MROUTING Revision: 3.3.1.3
58 * Multicast Routing set/getsockopt commands.
60 #define MRT_INIT 100 /* initialize forwarder */
61 #define MRT_DONE 101 /* shut down forwarder */
62 #define MRT_ADD_VIF 102 /* create virtual interface */
63 #define MRT_DEL_VIF 103 /* delete virtual interface */
64 #define MRT_ADD_MFC 104 /* insert forwarding cache entry */
65 #define MRT_DEL_MFC 105 /* delete forwarding cache entry */
66 #define MRT_VERSION 106 /* get kernel version number */
67 #define MRT_ASSERT 107 /* enable PIM assert processing */
70 #define GET_TIME(t) microtime(&t)
73 * Types and macros for handling bitmaps with one bit per virtual interface.
76 typedef u_long vifbitmap_t;
77 typedef u_short vifi_t; /* type of a vif index */
78 #define ALL_VIFS (vifi_t)-1
80 #define VIFM_SET(n, m) ((m) |= (1 << (n)))
81 #define VIFM_CLR(n, m) ((m) &= ~(1 << (n)))
82 #define VIFM_ISSET(n, m) ((m) & (1 << (n)))
83 #define VIFM_CLRALL(m) ((m) = 0x00000000)
84 #define VIFM_COPY(mfrom, mto) ((mto) = (mfrom))
85 #define VIFM_SAME(m1, m2) ((m1) == (m2))
89 * Argument structure for MRT_ADD_VIF.
90 * (MRT_DEL_VIF takes a single vifi_t argument.)
93 vifi_t vifc_vifi; /* the index of the vif to be added */
94 u_char vifc_flags; /* VIFF_ flags defined below */
95 u_char vifc_threshold; /* min ttl required to forward on vif */
96 u_int vifc_rate_limit; /* max rate */
97 struct in_addr vifc_lcl_addr; /* local interface address */
98 struct in_addr vifc_rmt_addr; /* remote address (tunnels only) */
101 #define VIFF_TUNNEL 0x1 /* vif represents a tunnel end-point */
102 #define VIFF_SRCRT 0x2 /* tunnel uses IP source routing */
105 * Argument structure for MRT_ADD_MFC and MRT_DEL_MFC
106 * (mfcc_tos to be added at a future point)
109 struct in_addr mfcc_origin; /* ip origin of mcasts */
110 struct in_addr mfcc_mcastgrp; /* multicast group associated*/
111 vifi_t mfcc_parent; /* incoming vif */
112 u_char mfcc_ttls[MAXVIFS]; /* forwarding ttls on vifs */
116 * The kernel's multicast routing statistics.
119 u_long mrts_mfc_lookups; /* # forw. cache hash table hits */
120 u_long mrts_mfc_misses; /* # forw. cache hash table misses */
121 u_long mrts_upcalls; /* # calls to mrouted */
122 u_long mrts_no_route; /* no route for packet's origin */
123 u_long mrts_bad_tunnel; /* malformed tunnel options */
124 u_long mrts_cant_tunnel; /* no room for tunnel options */
125 u_long mrts_wrong_if; /* arrived on wrong interface */
126 u_long mrts_upq_ovflw; /* upcall Q overflow */
127 u_long mrts_cache_cleanups; /* # entries with no upcalls */
128 u_long mrts_drop_sel; /* pkts dropped selectively */
129 u_long mrts_q_overflow; /* pkts dropped - Q overflow */
130 u_long mrts_pkt2large; /* pkts dropped - size > BKT SIZE */
131 u_long mrts_upq_sockfull; /* upcalls dropped - socket full */
135 * Argument structure used by mrouted to get src-grp pkt counts
146 * Argument structure used by mrouted to get vif pkt counts
148 struct sioc_vif_req {
149 vifi_t vifi; /* vif number */
150 u_long icount; /* Input packet count on vif */
151 u_long ocount; /* Output packet count on vif */
152 u_long ibytes; /* Input byte count on vif */
153 u_long obytes; /* Output byte count on vif */
158 * The kernel's virtual-interface structure.
161 u_char v_flags; /* VIFF_ flags defined above */
162 u_char v_threshold; /* min ttl required to forward on vif*/
163 u_int v_rate_limit; /* max rate */
164 struct tbf *v_tbf; /* token bucket structure at intf. */
165 struct in_addr v_lcl_addr; /* local interface address */
166 struct in_addr v_rmt_addr; /* remote address (tunnels only) */
167 struct ifnet *v_ifp; /* pointer to interface */
168 u_long v_pkt_in; /* # pkts in on interface */
169 u_long v_pkt_out; /* # pkts out on interface */
170 u_long v_bytes_in; /* # bytes in on interface */
171 u_long v_bytes_out; /* # bytes out on interface */
172 struct route v_route; /* cached route if this is a tunnel */
173 u_int v_rsvp_on; /* RSVP listening on this vif */
174 struct socket *v_rsvpd; /* RSVP daemon socket */
178 * The kernel's multicast forwarding cache entry structure
179 * (A field for the type of service (mfc_tos) is to be added
183 struct in_addr mfc_origin; /* IP origin of mcasts */
184 struct in_addr mfc_mcastgrp; /* multicast group associated*/
185 vifi_t mfc_parent; /* incoming vif */
186 u_char mfc_ttls[MAXVIFS]; /* forwarding ttls on vifs */
187 u_long mfc_pkt_cnt; /* pkt count for src-grp */
188 u_long mfc_byte_cnt; /* byte count for src-grp */
189 u_long mfc_wrong_if; /* wrong if for src-grp */
190 int mfc_expire; /* time to clean entry up */
191 struct timeval mfc_last_assert; /* last time I sent an assert*/
192 struct rtdetq *mfc_stall; /* q of packets awaiting mfc */
193 struct mfc *mfc_next; /* next mfc entry */
197 * Struct used to communicate from kernel to multicast router
198 * note the convenient similarity to an IP packet
203 u_char im_msgtype; /* what type of message */
204 #define IGMPMSG_NOCACHE 1
205 #define IGMPMSG_WRONGVIF 2
206 u_char im_mbz; /* must be zero */
207 u_char im_vif; /* vif rec'd on */
209 struct in_addr im_src, im_dst;
213 * Argument structure used for pkt info. while upcall is made
216 struct mbuf *m; /* A copy of the packet */
217 struct ifnet *ifp; /* Interface pkt came in on */
218 vifi_t xmt_vif; /* Saved copy of imo_multicast_vif */
219 struct rtdetq *next; /* Next in list of packets */
222 #define MFCTBLSIZ 256
223 #if (MFCTBLSIZ & (MFCTBLSIZ - 1)) == 0 /* from sys:route.h */
224 #define MFCHASHMOD(h) ((h) & (MFCTBLSIZ - 1))
226 #define MFCHASHMOD(h) ((h) % MFCTBLSIZ)
229 #define MAX_UPQ 4 /* max. no of pkts in upcall Q */
232 * Token Bucket filter code
234 #define MAX_BKT_SIZE 10000 /* 10K bytes size */
235 #define MAXQSIZE 10 /* max # of pkts in queue */
238 * the token bucket filter at each vif
242 struct timeval tbf_last_pkt_t; /* arr. time of last pkt */
243 u_long tbf_n_tok; /* no of tokens in bucket */
244 u_long tbf_q_len; /* length of queue at this vif */
245 u_long tbf_max_q_len; /* max. queue length */
246 struct mbuf *tbf_q; /* Packet queue */
247 struct mbuf *tbf_t; /* tail-insertion pointer */
254 extern int (*ip_mrouter_set)(struct socket *, struct sockopt *);
255 extern int (*ip_mrouter_get)(struct socket *, struct sockopt *);
256 extern int (*ip_mrouter_done)(void);
257 extern int (*mrt_ioctl)(int, caddr_t);
261 #endif /* _NETINET_IP_MROUTE_H_ */