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Annotation of embedaddon/pimd/trace.h, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (c) 1998-2001
                      3:  * University of Southern California/Information Sciences Institute.
                      4:  * All rights reserved.
                      5:  *
                      6:  * Redistribution and use in source and binary forms, with or without
                      7:  * modification, are permitted provided that the following conditions
                      8:  * are met:
                      9:  * 1. Redistributions of source code must retain the above copyright
                     10:  *    notice, this list of conditions and the following disclaimer.
                     11:  * 2. Redistributions in binary form must reproduce the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer in the
                     13:  *    documentation and/or other materials provided with the distribution.
                     14:  * 3. Neither the name of the project nor the names of its contributors
                     15:  *    may be used to endorse or promote products derived from this software
                     16:  *    without specific prior written permission.
                     17:  *
                     18:  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
                     19:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     20:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     21:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
                     22:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     23:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     24:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     25:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     26:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     27:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     28:  * SUCH DAMAGE.
                     29:  */
                     30: /*
                     31:  *  $Id: trace.h,v 1.7 2001/09/10 20:31:37 pavlin Exp $
                     32:  */
                     33: /*
                     34:  * Part of this program has been derived from mrouted.
                     35:  * The mrouted program is covered by the license in the accompanying file
                     36:  * named "LICENSE.mrouted".
                     37:  *
                     38:  * The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
                     39:  * Leland Stanford Junior University.
                     40:  *
                     41:  */
                     42: 
                     43: 
                     44: /*
                     45:  * The packet format for a traceroute request.
                     46:  */
                     47: struct tr_query {
                     48:     uint32_t  tr_src;          /* traceroute source */
                     49:     uint32_t  tr_dst;          /* traceroute destination */
                     50:     uint32_t  tr_raddr;                /* traceroute response address */
                     51: #if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
                     52:     struct {
                     53:        u_int   qid : 24;       /* traceroute query id */
                     54:        u_int   ttl : 8;        /* traceroute response ttl */
                     55:     } q;
                     56: #else
                     57:     struct {
                     58:        u_int   ttl : 8;        /* traceroute response ttl */
                     59:        u_int   qid : 24;       /* traceroute query id */
                     60:     } q;
                     61: #endif /* BYTE_ORDER */
                     62: };
                     63: 
                     64: #define tr_rttl q.ttl
                     65: #define tr_qid  q.qid
                     66: 
                     67: /*
                     68:  * Traceroute response format.  A traceroute response has a tr_query at the
                     69:  * beginning, followed by one tr_resp for each hop taken.
                     70:  */
                     71: struct tr_resp {
                     72:     uint32_t tr_qarr;          /* query arrival time */
                     73:     uint32_t tr_inaddr;                /* incoming interface address */
                     74:     uint32_t tr_outaddr;       /* outgoing interface address */
                     75:     uint32_t tr_rmtaddr;       /* parent address in source tree */
                     76:     uint32_t tr_vifin;         /* input packet count on interface */
                     77:     uint32_t tr_vifout;                /* output packet count on interface */
                     78:     uint32_t tr_pktcnt;                /* total incoming packets for src-grp */
                     79:     uint8_t  tr_rproto;                /* routing protocol deployed on router */
                     80:     uint8_t  tr_fttl;          /* ttl required to forward on outvif */
                     81:     uint8_t  tr_smask;         /* subnet mask for src addr */
                     82:     uint8_t  tr_rflags;                /* forwarding error codes */
                     83: };
                     84: 
                     85: /* defs within mtrace */
                     86: #define QUERY  1
                     87: #define RESP   2
                     88: #define QLEN   sizeof(struct tr_query)
                     89: #define RLEN   sizeof(struct tr_resp)
                     90: 
                     91: /* fields for tr_rflags (forwarding error codes) */
                     92: #define TR_NO_ERR      0       /* No error */
                     93: #define TR_WRONG_IF    1       /* traceroute arrived on non-oif */
                     94: #define TR_PRUNED      2       /* router has sent a prune upstream */
                     95: #define TR_OPRUNED     3       /* stop forw. after request from next hop rtr*/
                     96: #define TR_SCOPED      4       /* group adm. scoped at this hop */
                     97: #define TR_NO_RTE      5       /* no route for the source */
                     98: #define TR_NO_LHR       6       /* not the last-hop router */
                     99: #define TR_NO_FWD      7       /* not forwarding for this (S,G). Reason = ? */
                    100: #define TR_RP           8       /* I am the RP/Core */
                    101: #define TR_IIF          9       /* request arrived on the iif */
                    102: #define TR_NO_MULTI     0x0a    /* multicast disabled on that interface */
                    103: #define TR_NO_SPACE    0x81    /* no space to insert responce data block */
                    104: #define TR_OLD_ROUTER  0x82    /* previous hop does not support traceroute */
                    105: #define TR_ADMIN_PROHIB 0x83    /* traceroute adm. prohibited */
                    106: 
                    107: /* fields for tr_smask */
                    108: #define TR_GROUP_ONLY   0x2f    /* forwarding solely on group state */
                    109: #define TR_SUBNET_COUNT 0x40    /* pkt count for (S,G) is for source network */
                    110: 
                    111: /* fields for packets count */
                    112: #define TR_CANT_COUNT   0xffffffff  /* no count can be reported */
                    113: 
                    114: /* fields for tr_rproto (routing protocol) */
                    115: #define PROTO_DVMRP       1
                    116: #define PROTO_MOSPF       2
                    117: #define PROTO_PIM         3
                    118: #define PROTO_CBT         4
                    119: #define PROTO_PIM_SPECIAL  5
                    120: #define PROTO_PIM_STATIC   6
                    121: #define PROTO_DVMRP_STATIC 7
                    122: 
                    123: #define NBR_VERS(n)    (((n)->al_pv << 8) + (n)->al_mv)
                    124: 
                    125: /**
                    126:  * Local Variables:
                    127:  *  version-control: t
                    128:  *  indent-tabs-mode: t
                    129:  *  c-file-style: "ellemtel"
                    130:  *  c-basic-offset: 4
                    131:  * End:
                    132:  */