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| /*!\file netinet/ip_mrout.h |
| * IP multicast forwarding. |
| */ |
| |
| /* |
| * 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 1.10.4.1 1997/02/22 19:47:28 joerg Exp $ |
| */ |
| |
| #ifndef __NETINET_IP_MROUTE_H |
| #define __NETINET_IP_MROUTE_H |
| |
| /* |
| * Definitions for IP multicast forwarding. |
| * |
| * 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 Revision: 3.3.1.3 |
| */ |
| |
| |
| /* |
| * Multicast Routing set/getsockopt commands. |
| */ |
| #define MRT_INIT 100 /* initialize forwarder */ |
| #define MRT_DONE 101 /* shut down forwarder */ |
| #define MRT_ADD_VIF 102 /* create virtual interface */ |
| #define MRT_DEL_VIF 103 /* delete virtual interface */ |
| #define MRT_ADD_MFC 104 /* insert forwarding cache entry */ |
| #define MRT_DEL_MFC 105 /* delete forwarding cache entry */ |
| #define MRT_VERSION 106 /* get kernel version number */ |
| #define MRT_ASSERT 107 /* enable PIM assert processing */ |
| |
| |
| #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 ALL_VIFS (vifi_t)-1 |
| |
| #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 MRT_ADD_VIF. |
| * (MRT_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 rate */ |
| 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 MRT_ADD_MFC and MRT_DEL_MFC |
| * (mfcc_tos to be added at a future point) |
| */ |
| struct mfcctl { |
| struct in_addr mfcc_origin; /* ip origin of mcasts */ |
| struct in_addr mfcc_mcastgrp; /* multicast group associated*/ |
| vifi_t mfcc_parent; /* incoming vif */ |
| u_char mfcc_ttls[MAXVIFS]; /* forwarding ttls on vifs */ |
| }; |
| |
| /* |
| * 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 */ |
| u_long mrts_upq_sockfull; /* upcalls dropped - socket full */ |
| }; |
| |
| /* |
| * 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 pktcnt; |
| u_long bytecnt; |
| u_long wrong_if; |
| }; |
| |
| /* |
| * Argument structure used by mrouted to get vif pkt counts |
| */ |
| struct sioc_vif_req { |
| vifi_t vifi; /* vif number */ |
| u_long icount; /* Input packet count on vif */ |
| u_long ocount; /* Output packet count on vif */ |
| u_long ibytes; /* Input byte count on vif */ |
| u_long obytes; /* Output byte count on vif */ |
| }; |
| |
| |
| /* |
| * 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*/ |
| 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 */ |
| u_long v_bytes_in; /* # bytes in on interface */ |
| u_long v_bytes_out; /* # bytes out on interface */ |
| struct route v_route; /* cached route if this is a tunnel */ |
| u_int v_rsvp_on; /* RSVP listening on this vif */ |
| struct socket *v_rsvpd; /* RSVP daemon socket */ |
| }; |
| |
| /* |
| * 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; /* IP origin of mcasts */ |
| struct in_addr mfc_mcastgrp; /* multicast group associated*/ |
| 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 */ |
| u_long mfc_byte_cnt; /* byte count for src-grp */ |
| u_long mfc_wrong_if; /* wrong if for src-grp */ |
| int mfc_expire; /* time to clean entry up */ |
| struct timeval mfc_last_assert; /* last time I sent an assert*/ |
| }; |
| |
| /* |
| * Struct used to communicate from kernel to multicast router |
| * note the convenient similarity to an IP packet |
| */ |
| struct igmpmsg { |
| u_long unused1; |
| u_long unused2; |
| u_char im_msgtype; /* what type of message */ |
| #define IGMPMSG_NOCACHE 1 |
| #define IGMPMSG_WRONGVIF 2 |
| u_char im_mbz; /* must be zero */ |
| u_char im_vif; /* vif rec'd on */ |
| u_char unused3; |
| struct in_addr im_src, im_dst; |
| }; |
| |
| /* |
| * Argument structure used for pkt info. while upcall is made |
| */ |
| struct rtdetq { |
| struct mbuf *m; /* A copy of the packet */ |
| struct ifnet *ifp; /* Interface pkt came in on */ |
| vifi_t xmt_vif; /* Saved copy of imo_multicast_vif */ |
| #ifdef UPCALL_TIMING |
| struct timeval t; /* Timestamp */ |
| #endif |
| }; |
| |
| #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 */ |
| |
| /* |
| * the token bucket filter at each vif |
| */ |
| struct tbf |
| { |
| struct timeval tbf_last_pkt_t; /* arr. time of last pkt */ |
| u_long tbf_n_tok; /* no of tokens in bucket */ |
| u_long tbf_q_len; /* length of queue at this vif */ |
| u_long tbf_max_q_len; /* max. queue length */ |
| struct mbuf *tbf_q; /* Packet queue */ |
| struct mbuf *tbf_t; /* tail-insertion pointer */ |
| }; |
| |
| #endif |