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Diffstat (limited to 'sys/netinet/ip_mroute.h')
| -rw-r--r-- | sys/netinet/ip_mroute.h | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/sys/netinet/ip_mroute.h b/sys/netinet/ip_mroute.h new file mode 100644 index 000000000000..4b3c753998df --- /dev/null +++ b/sys/netinet/ip_mroute.h @@ -0,0 +1,174 @@ +/* + * Copyright (c) 1989 Stephen Deering. + * Copyright (c) 1992 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 7.2 (Berkeley) 7/8/92 + */ + +/* + * 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 */ +#define VIFF_SRCRT 0x2 /* tunnel uses IP src routing */ + + +/* + * 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 256 +#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 */ + u_long mrts_wrong_if; /* arrived on wrong interface */ +}; + +int ip_mrouter_cmd __P((int, struct socket *, struct mbuf *)); +int ip_mrouter_done __P(()); + +#endif /* KERNEL */ + |