ip_mroute.h
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- /* ip_mroute.h - internet multicast routing header file */
- /* Copyright 1984 - 2001 Wind River Systems, Inc. */
- /*
- * 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 1.15 1999/01/18 02:06:59 fenner Exp $
- */
- /*
- modification history
- --------------------
- 01c,10oct01,rae merge from truestack ver 01k (v2 upgrade)
- 01b,08apr97,vin removed declarations for ip_mforward and ip_mrouter_done.
- implemented ip_mforward as a hook for scalability.
- 01a,03mar96,vin created from BSD4.4lite2.
- */
- #ifndef __INCip_mrouteh
- #define __INCip_mrouteh
- #include "netinet/in_pcb.h"
- #ifdef __cplusplus
- extern "C" {
- #endif
- /*
- * 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
- */
- #define ENCAP_TTL 64
- #define ENCAP_PROTO IPPROTO_IPIP /* 4 */
- /* should be in netinetin.h in BSD */
- #define IPPROTO_IPIP 4 /* IP encapsulation in IP*//* added 8.22.00 chall */
- #define IPPROTO_RSVP 46 /* resource reservation */
- /*
- * 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 MRT_DEBUG 108
- #define EXPIRE_TIMEOUT 250000000/* nanoseconds */ /*(hz / 4) 4x / second */
- #define UPCALL_EXPIRE 6 /* number of timeouts */
- #define TBF_REPROCESS 10000000 /* nanoseconds */ /*(hz / 100) 100x / second */
- #define DEBUG_MFC 0x02
- #define DEBUG_FORWARD 0x04
- #define DEBUG_EXPIRE 0x08
- #define DEBUG_XMIT 0x10
- #define DEBUG_TABLE 0x20
- /*
- * Rate limit for assert notification messages, in usec
- */
- #define ASSERT_MSG_TIME 3000000
- #ifndef __P
- #define __P(x) x
- #endif
- /*
- * Types 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 */
- /* from BSD's sys/sockio.h */
- #define SIOCGETVIFCNT _IOWR('r', 15, struct sioc_vif_req)/* get vif pkt cnt */
- #define SIOCGETSGCNT _IOWR('r', 16, struct sioc_sg_req) /* get s,g pkt cnt */
- /* BSD's sys/ioctl.h should be included in sys/sockio.h */
- #include "sys/ioctl.h"
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 1 /* tell gcc960 not to optimize alignments */
- #endif /* CPU_FAMILY==I960 */
- /*
- * 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 */
- BOOL mfcc_notify;
- };
- /*
- * 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 */
- };
- /*
- * 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 */
- UINT mfc_last_assert; /* last time I sent an assert*/
- struct rtdetq *mfc_stall; /* q of packets awaiting mfc */
- struct mfc *mfc_next; /* next mfc entry */
- /* below members were added in Net/3 port */
- struct mfc *mfc_next_g; /* next group in same chain */
- struct mfc *mfc_root_rt; /* 0,g entry in hash table*/
- BOOL mfc_notify; /* notify overlying routing daemon */
- };
- /*
- * 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 */
- struct rtdetq *next; /* Next in list of packets */
- };
- #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
- {
- UINT 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 */
- };
- int ip_mrouter_cmd (int cmd, struct socket* so, struct mbuf* m) ;
- int ip_mforward (
- struct mbuf *,
- struct ifnet *,
- struct ip *,
- struct ip_moptions *
- );
- #if ((CPU_FAMILY==I960) && (defined __GNUC__))
- #pragma align 0 /* turn off alignment requirement */
- #endif /* CPU_FAMILY==I960 */
- #ifdef __cplusplus
- }
- #endif
- #endif /* __INCip_mrouteh */