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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [packages/] [net/] [bsd_tcpip/] [v2_0/] [include/] [netinet/] [ip_mroute.h] - Blame information for rev 174

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1 27 unneback
//==========================================================================
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//
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//      include/netinet/ip_mroute.h
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//
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//==========================================================================
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//####BSDCOPYRIGHTBEGIN####
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//
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// -------------------------------------------
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//
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// Portions of this software may have been derived from OpenBSD, 
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// FreeBSD or other sources, and are covered by the appropriate
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// copyright disclaimers included herein.
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//
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// Portions created by Red Hat are
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// Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
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//
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// -------------------------------------------
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//
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//####BSDCOPYRIGHTEND####
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//==========================================================================
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/*
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 * Copyright (c) 1989 Stephen Deering.
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 * Copyright (c) 1992, 1993
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 *      The Regents of the University of California.  All rights reserved.
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 *
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 * This code is derived from software contributed to Berkeley by
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 * Stephen Deering of Stanford University.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. All advertising materials mentioning features or use of this software
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 *    must display the following acknowledgement:
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 *      This product includes software developed by the University of
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 *      California, Berkeley and its contributors.
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 * 4. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 *
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 *      @(#)ip_mroute.h 8.1 (Berkeley) 6/10/93
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 * $FreeBSD: src/sys/netinet/ip_mroute.h,v 1.17 1999/12/29 04:41:01 peter Exp $
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 */
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#ifndef _NETINET_IP_MROUTE_H_
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#define _NETINET_IP_MROUTE_H_
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/*
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 * Definitions for IP multicast forwarding.
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 *
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 * Written by David Waitzman, BBN Labs, August 1988.
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 * Modified by Steve Deering, Stanford, February 1989.
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 * Modified by Ajit Thyagarajan, PARC, August 1993.
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 * Modified by Ajit Thyagarajan, PARC, August 1994.
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 *
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 * MROUTING Revision: 3.3.1.3
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 */
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/*
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 * Multicast Routing set/getsockopt commands.
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 */
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#define MRT_INIT        100     /* initialize forwarder */
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#define MRT_DONE        101     /* shut down forwarder */
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#define MRT_ADD_VIF     102     /* create virtual interface */
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#define MRT_DEL_VIF     103     /* delete virtual interface */
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#define MRT_ADD_MFC     104     /* insert forwarding cache entry */
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#define MRT_DEL_MFC     105     /* delete forwarding cache entry */
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#define MRT_VERSION     106     /* get kernel version number */
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#define MRT_ASSERT      107     /* enable PIM assert processing */
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#define GET_TIME(t)     microtime(&t)
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/*
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 * Types and macros for handling bitmaps with one bit per virtual interface.
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 */
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#define MAXVIFS 32
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typedef u_long vifbitmap_t;
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typedef u_short vifi_t;         /* type of a vif index */
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#define ALL_VIFS (vifi_t)-1
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#define VIFM_SET(n, m)          ((m) |= (1 << (n)))
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#define VIFM_CLR(n, m)          ((m) &= ~(1 << (n)))
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#define VIFM_ISSET(n, m)        ((m) & (1 << (n)))
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#define VIFM_CLRALL(m)          ((m) = 0x00000000)
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#define VIFM_COPY(mfrom, mto)   ((mto) = (mfrom))
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#define VIFM_SAME(m1, m2)       ((m1) == (m2))
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/*
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 * Argument structure for MRT_ADD_VIF.
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 * (MRT_DEL_VIF takes a single vifi_t argument.)
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 */
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struct vifctl {
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        vifi_t  vifc_vifi;              /* the index of the vif to be added */
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        u_char  vifc_flags;             /* VIFF_ flags defined below */
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        u_char  vifc_threshold;         /* min ttl required to forward on vif */
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        u_int   vifc_rate_limit;        /* max rate */
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        struct  in_addr vifc_lcl_addr;  /* local interface address */
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        struct  in_addr vifc_rmt_addr;  /* remote address (tunnels only) */
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};
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#define VIFF_TUNNEL     0x1             /* vif represents a tunnel end-point */
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#define VIFF_SRCRT      0x2             /* tunnel uses IP source routing */
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/*
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 * Argument structure for MRT_ADD_MFC and MRT_DEL_MFC
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 * (mfcc_tos to be added at a future point)
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 */
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struct mfcctl {
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    struct in_addr  mfcc_origin;                /* ip origin of mcasts       */
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    struct in_addr  mfcc_mcastgrp;              /* multicast group associated*/
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    vifi_t          mfcc_parent;                /* incoming vif              */
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    u_char          mfcc_ttls[MAXVIFS];         /* forwarding ttls on vifs   */
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};
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/*
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 * The kernel's multicast routing statistics.
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 */
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struct mrtstat {
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    u_long      mrts_mfc_lookups;       /* # forw. cache hash table hits   */
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    u_long      mrts_mfc_misses;        /* # forw. cache hash table misses */
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    u_long      mrts_upcalls;           /* # calls to mrouted              */
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    u_long      mrts_no_route;          /* no route for packet's origin    */
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    u_long      mrts_bad_tunnel;        /* malformed tunnel options        */
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    u_long      mrts_cant_tunnel;       /* no room for tunnel options      */
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    u_long      mrts_wrong_if;          /* arrived on wrong interface      */
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    u_long      mrts_upq_ovflw;         /* upcall Q overflow               */
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    u_long      mrts_cache_cleanups;    /* # entries with no upcalls       */
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    u_long      mrts_drop_sel;          /* pkts dropped selectively        */
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    u_long      mrts_q_overflow;        /* pkts dropped - Q overflow       */
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    u_long      mrts_pkt2large;         /* pkts dropped - size > BKT SIZE  */
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    u_long      mrts_upq_sockfull;      /* upcalls dropped - socket full */
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};
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/*
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 * Argument structure used by mrouted to get src-grp pkt counts
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 */
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struct sioc_sg_req {
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    struct in_addr src;
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    struct in_addr grp;
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    u_long pktcnt;
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    u_long bytecnt;
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    u_long wrong_if;
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};
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/*
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 * Argument structure used by mrouted to get vif pkt counts
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 */
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struct sioc_vif_req {
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    vifi_t vifi;                /* vif number                           */
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    u_long icount;              /* Input packet count on vif            */
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    u_long ocount;              /* Output packet count on vif           */
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    u_long ibytes;              /* Input byte count on vif              */
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    u_long obytes;              /* Output byte count on vif             */
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};
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/*
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 * The kernel's virtual-interface structure.
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 */
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struct vif {
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    u_char              v_flags;        /* VIFF_ flags defined above         */
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    u_char              v_threshold;    /* min ttl required to forward on vif*/
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    u_int               v_rate_limit;   /* max rate                          */
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    struct tbf         *v_tbf;          /* token bucket structure at intf.   */
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    struct in_addr      v_lcl_addr;     /* local interface address           */
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    struct in_addr      v_rmt_addr;     /* remote address (tunnels only)     */
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    struct ifnet       *v_ifp;          /* pointer to interface              */
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    u_long              v_pkt_in;       /* # pkts in on interface            */
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    u_long              v_pkt_out;      /* # pkts out on interface           */
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    u_long              v_bytes_in;     /* # bytes in on interface           */
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    u_long              v_bytes_out;    /* # bytes out on interface          */
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    struct route        v_route;        /* cached route if this is a tunnel */
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    u_int               v_rsvp_on;      /* RSVP listening on this vif */
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    struct socket      *v_rsvpd;        /* RSVP daemon socket */
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};
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/*
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 * The kernel's multicast forwarding cache entry structure
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 * (A field for the type of service (mfc_tos) is to be added
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 * at a future point)
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 */
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struct mfc {
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    struct in_addr  mfc_origin;                 /* IP origin of mcasts   */
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    struct in_addr  mfc_mcastgrp;               /* multicast group associated*/
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    vifi_t          mfc_parent;                 /* incoming vif              */
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    u_char          mfc_ttls[MAXVIFS];          /* forwarding ttls on vifs   */
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    u_long          mfc_pkt_cnt;                /* pkt count for src-grp     */
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    u_long          mfc_byte_cnt;               /* byte count for src-grp    */
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    u_long          mfc_wrong_if;               /* wrong if for src-grp      */
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    int             mfc_expire;                 /* time to clean entry up    */
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    struct timeval  mfc_last_assert;            /* last time I sent an assert*/
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    struct rtdetq  *mfc_stall;                  /* q of packets awaiting mfc */
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    struct mfc     *mfc_next;                   /* next mfc entry            */
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};
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/*
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 * Struct used to communicate from kernel to multicast router
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 * note the convenient similarity to an IP packet
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 */
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struct igmpmsg {
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    u_long          unused1;
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    u_long          unused2;
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    u_char          im_msgtype;                 /* what type of message     */
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#define IGMPMSG_NOCACHE         1
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#define IGMPMSG_WRONGVIF        2
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    u_char          im_mbz;                     /* must be zero             */
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    u_char          im_vif;                     /* vif rec'd on             */
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    u_char          unused3;
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    struct in_addr  im_src, im_dst;
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};
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/*
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 * Argument structure used for pkt info. while upcall is made
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 */
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struct rtdetq {
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    struct mbuf         *m;             /* A copy of the packet             */
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    struct ifnet        *ifp;           /* Interface pkt came in on         */
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    vifi_t              xmt_vif;        /* Saved copy of imo_multicast_vif  */
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#ifdef UPCALL_TIMING
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    struct timeval      t;              /* Timestamp */
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#endif /* UPCALL_TIMING */
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    struct rtdetq       *next;          /* Next in list of packets          */
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};
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#define MFCTBLSIZ       256
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#if (MFCTBLSIZ & (MFCTBLSIZ - 1)) == 0    /* from sys:route.h */
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#define MFCHASHMOD(h)   ((h) & (MFCTBLSIZ - 1))
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#else
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#define MFCHASHMOD(h)   ((h) % MFCTBLSIZ)
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#endif
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#define MAX_UPQ 4               /* max. no of pkts in upcall Q */
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/*
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 * Token Bucket filter code
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 */
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#define MAX_BKT_SIZE    10000             /* 10K bytes size             */
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#define MAXQSIZE        10                /* max # of pkts in queue     */
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/*
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 * the token bucket filter at each vif
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 */
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struct tbf
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{
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    struct timeval tbf_last_pkt_t; /* arr. time of last pkt     */
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    u_long tbf_n_tok;           /* no of tokens in bucket       */
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    u_long tbf_q_len;           /* length of queue at this vif  */
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    u_long tbf_max_q_len;       /* max. queue length            */
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    struct mbuf *tbf_q;         /* Packet queue                 */
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    struct mbuf *tbf_t;         /* tail-insertion pointer       */
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};
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#ifdef _KERNEL
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struct sockopt;
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extern int      (*ip_mrouter_set) __P((struct socket *, struct sockopt *));
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extern int      (*ip_mrouter_get) __P((struct socket *, struct sockopt *));
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extern int      (*ip_mrouter_done) __P((void));
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#ifdef MROUTING
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extern int      (*mrt_ioctl) __P((int, caddr_t));
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#else
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extern int      (*mrt_ioctl) __P((int, caddr_t, struct proc *));
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#endif
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#endif /* _KERNEL */
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#endif /* _NETINET_IP_MROUTE_H_ */

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