ip_mroute.h
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上传日期:2013-03-31
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文件大小:6k
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网络编程
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C/C++
- /*
- * Copyright (c) 1989 Stephen Deering.
- * Copyright (c) 1992, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Stephen Deering of Stanford University.
- *
- * 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. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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.
- *
- * @(#)ip_mroute.h 8.1 (Berkeley) 6/10/93
- */
- /*
- * Definitions for the kernel part of DVMRP,
- * a Distance-Vector Multicast Routing Protocol.
- * (See RFC-1075.)
- *
- * Written by David Waitzman, BBN Labs, August 1988.
- * Modified by Steve Deering, Stanford, February 1989.
- *
- * MROUTING 1.0
- */
- /*
- * DVMRP-specific setsockopt commands.
- */
- #define DVMRP_INIT 100
- #define DVMRP_DONE 101
- #define DVMRP_ADD_VIF 102
- #define DVMRP_DEL_VIF 103
- #define DVMRP_ADD_LGRP 104
- #define DVMRP_DEL_LGRP 105
- #define DVMRP_ADD_MRT 106
- #define DVMRP_DEL_MRT 107
- /*
- * Types and macros for handling bitmaps with one bit per virtual interface.
- */
- #define MAXVIFS 32
- typedef u_long vifbitmap_t;
- typedef u_short vifi_t; /* type of a vif index */
- #define VIFM_SET(n, m) ((m) |= (1 << (n)))
- #define VIFM_CLR(n, m) ((m) &= ~(1 << (n)))
- #define VIFM_ISSET(n, m) ((m) & (1 << (n)))
- #define VIFM_CLRALL(m) ((m) = 0x00000000)
- #define VIFM_COPY(mfrom, mto) ((mto) = (mfrom))
- #define VIFM_SAME(m1, m2) ((m1) == (m2))
- /*
- * Agument structure for DVMRP_ADD_VIF.
- * (DVMRP_DEL_VIF takes a single vifi_t argument.)
- */
- struct vifctl {
- vifi_t vifc_vifi; /* the index of the vif to be added */
- u_char vifc_flags; /* VIFF_ flags defined below */
- u_char vifc_threshold; /* min ttl required to forward on vif */
- struct in_addr vifc_lcl_addr; /* local interface address */
- struct in_addr vifc_rmt_addr; /* remote address (tunnels only) */
- };
- #define VIFF_TUNNEL 0x1 /* vif represents a tunnel end-point */
- /*
- * Argument structure for DVMRP_ADD_LGRP and DVMRP_DEL_LGRP.
- */
- struct lgrplctl {
- vifi_t lgc_vifi;
- struct in_addr lgc_gaddr;
- };
- /*
- * Argument structure for DVMRP_ADD_MRT.
- * (DVMRP_DEL_MRT takes a single struct in_addr argument, containing origin.)
- */
- struct mrtctl {
- struct in_addr mrtc_origin; /* subnet origin of multicasts */
- struct in_addr mrtc_originmask; /* subnet mask for origin */
- vifi_t mrtc_parent; /* incoming vif */
- vifbitmap_t mrtc_children; /* outgoing children vifs */
- vifbitmap_t mrtc_leaves; /* subset of outgoing children vifs */
- };
- #ifdef KERNEL
- /*
- * The kernel's virtual-interface structure.
- */
- struct vif {
- u_char v_flags; /* VIFF_ flags defined above */
- u_char v_threshold; /* min ttl required to forward on vif */
- struct in_addr v_lcl_addr; /* local interface address */
- struct in_addr v_rmt_addr; /* remote address (tunnels only) */
- struct ifnet *v_ifp; /* pointer to interface */
- struct in_addr *v_lcl_grps; /* list of local grps (phyints only) */
- int v_lcl_grps_max; /* malloc'ed number of v_lcl_grps */
- int v_lcl_grps_n; /* used number of v_lcl_grps */
- u_long v_cached_group; /* last grp looked-up (phyints only) */
- int v_cached_result; /* last look-up result (phyints only) */
- };
- /*
- * The kernel's multicast route structure.
- */
- struct mrt {
- struct in_addr mrt_origin; /* subnet origin of multicasts */
- struct in_addr mrt_originmask; /* subnet mask for origin */
- vifi_t mrt_parent; /* incoming vif */
- vifbitmap_t mrt_children; /* outgoing children vifs */
- vifbitmap_t mrt_leaves; /* subset of outgoing children vifs */
- struct mrt *mrt_next; /* forward link */
- };
- #define MRTHASHSIZ 64
- #if (MRTHASHSIZ & (MRTHASHSIZ - 1)) == 0 /* from sys:route.h */
- #define MRTHASHMOD(h) ((h) & (MRTHASHSIZ - 1))
- #else
- #define MRTHASHMOD(h) ((h) % MRTHASHSIZ)
- #endif
- /*
- * The kernel's multicast routing statistics.
- */
- struct mrtstat {
- u_long mrts_mrt_lookups; /* # multicast route lookups */
- u_long mrts_mrt_misses; /* # multicast route cache misses */
- u_long mrts_grp_lookups; /* # group address lookups */
- u_long mrts_grp_misses; /* # group address cache misses */
- u_long mrts_no_route; /* no route for packet's origin */
- u_long mrts_bad_tunnel; /* malformed tunnel options */
- u_long mrts_cant_tunnel; /* no room for tunnel options */
- };
- int ip_mrouter_cmd __P((int, struct socket *, struct mbuf *));
- int ip_mrouter_done __P((void));
- #endif /* KERNEL */