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trace.h
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trace.h
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/*
* Copyright (c) 1998-2001
* University of Southern California/Information Sciences Institute.
* All rights reserved.
*
* 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. Neither the name of the project 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 PROJECT 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 PROJECT 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.
*/
/*
* $Id: trace.h,v 1.7 2001/09/10 20:31:37 pavlin Exp $
*/
/*
* Part of this program has been derived from mrouted.
* The mrouted program is covered by the license in the accompanying file
* named "LICENSE.mrouted".
*
* The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
* Leland Stanford Junior University.
*
*/
/*
* The packet format for a traceroute request.
*/
struct tr_query {
u_int32 tr_src; /* traceroute source */
u_int32 tr_dst; /* traceroute destination */
u_int32 tr_raddr; /* traceroute response address */
#if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
struct {
u_int qid : 24; /* traceroute query id */
u_int ttl : 8; /* traceroute response ttl */
} q;
#else
struct {
u_int ttl : 8; /* traceroute response ttl */
u_int qid : 24; /* traceroute query id */
} q;
#endif /* BYTE_ORDER */
};
#define tr_rttl q.ttl
#define tr_qid q.qid
/*
* Traceroute response format. A traceroute response has a tr_query at the
* beginning, followed by one tr_resp for each hop taken.
*/
struct tr_resp {
u_int32 tr_qarr; /* query arrival time */
u_int32 tr_inaddr; /* incoming interface address */
u_int32 tr_outaddr; /* outgoing interface address */
u_int32 tr_rmtaddr; /* parent address in source tree */
u_int32 tr_vifin; /* input packet count on interface */
u_int32 tr_vifout; /* output packet count on interface */
u_int32 tr_pktcnt; /* total incoming packets for src-grp */
u_char tr_rproto; /* routing protocol deployed on router */
u_char tr_fttl; /* ttl required to forward on outvif */
u_char tr_smask; /* subnet mask for src addr */
u_char tr_rflags; /* forwarding error codes */
};
/* defs within mtrace */
#define QUERY 1
#define RESP 2
#define QLEN sizeof(struct tr_query)
#define RLEN sizeof(struct tr_resp)
/* fields for tr_rflags (forwarding error codes) */
#define TR_NO_ERR 0 /* No error */
#define TR_WRONG_IF 1 /* traceroute arrived on non-oif */
#define TR_PRUNED 2 /* router has sent a prune upstream */
#define TR_OPRUNED 3 /* stop forw. after request from next hop rtr*/
#define TR_SCOPED 4 /* group adm. scoped at this hop */
#define TR_NO_RTE 5 /* no route for the source */
#define TR_NO_LHR 6 /* not the last-hop router */
#define TR_NO_FWD 7 /* not forwarding for this (S,G). Reason = ? */
#define TR_RP 8 /* I am the RP/Core */
#define TR_IIF 9 /* request arrived on the iif */
#define TR_NO_MULTI 0x0a /* multicast disabled on that interface */
#define TR_NO_SPACE 0x81 /* no space to insert responce data block */
#define TR_OLD_ROUTER 0x82 /* previous hop does not support traceroute */
#define TR_ADMIN_PROHIB 0x83 /* traceroute adm. prohibited */
/* fields for tr_smask */
#define TR_GROUP_ONLY 0x2f /* forwarding solely on group state */
#define TR_SUBNET_COUNT 0x40 /* pkt count for (S,G) is for source network */
/* fields for packets count */
#define TR_CANT_COUNT 0xffffffff /* no count can be reported */
/* fields for tr_rproto (routing protocol) */
#define PROTO_DVMRP 1
#define PROTO_MOSPF 2
#define PROTO_PIM 3
#define PROTO_CBT 4
#define PROTO_PIM_SPECIAL 5
#define PROTO_PIM_STATIC 6
#define PROTO_DVMRP_STATIC 7
#define NBR_VERS(n) (((n)->al_pv << 8) + (n)->al_mv)