/* * 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 * $Id: ip_mroute.h,v 1.5 1994/09/14 03:10:12 wollman Exp $ */ #ifndef _NETINET_IP_MROUTE_H_ #define _NETINET_IP_MROUTE_H_ /* * 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. * Modified by Ajit Thyagarajan, PARC, August 1993. * Modified by Ajit Thyagarajan, PARC, August 1994. * * MROUTING 1.5 */ /* * DVMRP-specific setsockopt commands. */ #define DVMRP_INIT 100 /* initialize forwarder */ #define DVMRP_DONE 101 /* shut down forwarder */ #define DVMRP_ADD_VIF 102 /* create virtual interface */ #define DVMRP_DEL_VIF 103 /* delete virtual interface */ #define DVMRP_ADD_MFC 104 /* insert forwarding cache entry */ #define DVMRP_DEL_MFC 105 /* delete forwarding cache entry */ #define GET_TIME(t) microtime(&t) /* * 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)) /* * Argument 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 */ u_int vifc_rate_limit; /* max tate */ 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 source routing */ /* * Argument structure for DVMRP_ADD_MFC * (mfcc_tos to be added at a future point) */ struct mfcctl { struct in_addr mfcc_origin; /* subnet origin of mcasts */ struct in_addr mfcc_mcastgrp; /* multicast group associated*/ struct in_addr mfcc_originmask; /* subnet mask for origin */ vifi_t mfcc_parent; /* incoming vif */ u_char mfcc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ }; /* * Argument structure for DVMRP_DEL_MFC */ struct delmfcctl { struct in_addr mfcc_origin; /* subnet origin of multicasts */ struct in_addr mfcc_mcastgrp; /* multicast group assoc. w/ origin */ }; /* * Argument structure used by RSVP daemon to get vif information */ struct vif_req { 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; char v_if_name[IFNAMSIZ]; /* if name */ }; struct vif_conf { u_int vifc_len; u_int vifc_num; struct vif_req *vifc_req; }; /* * The kernel's multicast routing statistics. */ struct mrtstat { u_long mrts_mfc_lookups; /* # forw. cache hash table hits */ u_long mrts_mfc_misses; /* # forw. cache hash table misses */ u_long mrts_upcalls; /* # calls to mrouted */ 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 */ u_long mrts_upq_ovflw; /* upcall Q overflow */ u_long mrts_cache_cleanups; /* # entries with no upcalls */ u_long mrts_drop_sel; /* pkts dropped selectively */ u_long mrts_q_overflow; /* pkts dropped - Q overflow */ u_long mrts_pkt2large; /* pkts dropped - size > BKT SIZE */ }; /* * Argument structure used by mrouted to get src-grp pkt counts */ struct sioc_sg_req { struct in_addr src; struct in_addr grp; u_long count; }; /* * Argument structure used by mrouted to get vif pkt counts */ struct sioc_vif_req { vifi_t vifi; u_long icount; u_long ocount; }; #ifdef KERNEL struct vif { u_char v_flags; /* VIFF_ flags defined above */ u_char v_threshold; /* min ttl required to forward on vif*/ u_int v_rate_limit; /* max rate */ struct tbf *v_tbf; /* token bucket structure at intf. */ 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 */ u_long v_pkt_in; /* # pkts in on interface */ u_long v_pkt_out; /* # pkts out on interface */ }; /* * The kernel's multicast forwarding cache entry structure * (A field for the type of service (mfc_tos) is to be added * at a future point) */ struct mfc { struct in_addr mfc_origin; /* subnet origin of mcasts */ struct in_addr mfc_mcastgrp; /* multicast group associated*/ struct in_addr mfc_originmask; /* subnet mask for origin */ vifi_t mfc_parent; /* incoming vif */ u_char mfc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ u_long mfc_pkt_cnt; /* pkt count for src-grp */ }; /* * Argument structure used for pkt info. while upcall is made */ struct rtdetq { struct mbuf *m; struct ifnet *ifp; u_long tunnel_src; struct ip_moptions *imo; }; #define MFCTBLSIZ 256 #if (MFCTBLSIZ & (MFCTBLSIZ - 1)) == 0 /* from sys:route.h */ #define MFCHASHMOD(h) ((h) & (MFCTBLSIZ - 1)) #else #define MFCHASHMOD(h) ((h) % MFCTBLSIZ) #endif #define MAX_UPQ 4 /* max. no of pkts in upcall Q */ /* * Token Bucket filter code */ #define MAX_BKT_SIZE 10000 /* 10K bytes size */ #define MAXQSIZE 10 /* max # of pkts in queue */ /* * queue structure at each vif */ struct pkt_queue { u_long pkt_len; /* length of packet in queue */ struct mbuf *pkt_m; /* pointer to packet mbuf */ struct ip *pkt_ip; /* pointer to ip header */ struct ip_moptions *pkt_imo; /* IP multicast options assoc. with pkt */ }; /* * the token bucket filter at each vif */ struct tbf { u_long last_pkt_t; /* arr. time of last pkt */ u_long n_tok; /* no of tokens in bucket */ u_long q_len; /* length of queue at this vif */ }; extern int (*ip_mrouter_cmd) __P((int, struct socket *, struct mbuf *)); extern int (*ip_mrouter_done) __P((void)); extern int (*mrt_ioctl) __P((int, caddr_t, struct proc *)); #endif /* KERNEL */ #endif /* _NETINET_IP_MROUTE_H_ */