1: /*
2: * Copyright (c) 1998 by the University of Southern California.
3: * All rights reserved.
4: *
5: * Permission to use, copy, modify, and distribute this software and
6: * its documentation in source and binary forms for lawful
7: * purposes and without fee is hereby granted, provided
8: * that the above copyright notice appear in all copies and that both
9: * the copyright notice and this permission notice appear in supporting
10: * documentation, and that any documentation, advertising materials,
11: * and other materials related to such distribution and use acknowledge
12: * that the software was developed by the University of Southern
13: * California and/or Information Sciences Institute.
14: * The name of the University of Southern California may not
15: * be used to endorse or promote products derived from this software
16: * without specific prior written permission.
17: *
18: * THE UNIVERSITY OF SOUTHERN CALIFORNIA DOES NOT MAKE ANY REPRESENTATIONS
19: * ABOUT THE SUITABILITY OF THIS SOFTWARE FOR ANY PURPOSE. THIS SOFTWARE IS
20: * PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
21: * INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
22: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND
23: * NON-INFRINGEMENT.
24: *
25: * IN NO EVENT SHALL USC, OR ANY OTHER CONTRIBUTOR BE LIABLE FOR ANY
26: * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT,
27: * TORT, OR OTHER FORM OF ACTION, ARISING OUT OF OR IN CONNECTION WITH,
28: * THE USE OR PERFORMANCE OF THIS SOFTWARE.
29: *
30: * Other copyrights might apply to parts of this software and are so
31: * noted when applicable.
32: */
33: /*
34: * Questions concerning this software should be directed to
35: * Pavlin Ivanov Radoslavov (pavlin@catarina.usc.edu)
36: *
37: * $Id: trace.h,v 1.1.1.1 2017/06/12 07:58:55 misho Exp $
38: */
39: /*
40: * Part of this program has been derived from mrouted.
41: * The mrouted program is covered by the license in the accompanying file
42: * named "LICENSE.mrouted".
43: *
44: * The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
45: * Leland Stanford Junior University.
46: *
47: */
48:
49:
50: /*
51: * The packet format for a traceroute request.
52: */
53: struct tr_query {
54: u_int32 tr_src; /* traceroute source */
55: u_int32 tr_dst; /* traceroute destination */
56: u_int32 tr_raddr; /* traceroute response address */
57: #if defined(BYTE_ORDER) && (BYTE_ORDER == LITTLE_ENDIAN)
58: struct {
59: u_int qid : 24; /* traceroute query id */
60: u_int ttl : 8; /* traceroute response ttl */
61: } q;
62: #else
63: struct {
64: u_int ttl : 8; /* traceroute response ttl */
65: u_int qid : 24; /* traceroute query id */
66: } q;
67: #endif /* BYTE_ORDER */
68: };
69:
70: #define tr_rttl q.ttl
71: #define tr_qid q.qid
72:
73: /*
74: * Traceroute response format. A traceroute response has a tr_query at the
75: * beginning, followed by one tr_resp for each hop taken.
76: */
77: struct tr_resp {
78: u_int32 tr_qarr; /* query arrival time */
79: u_int32 tr_inaddr; /* incoming interface address */
80: u_int32 tr_outaddr; /* outgoing interface address */
81: u_int32 tr_rmtaddr; /* parent address in source tree */
82: u_int32 tr_vifin; /* input packet count on interface */
83: u_int32 tr_vifout; /* output packet count on interface */
84: u_int32 tr_pktcnt; /* total incoming packets for src-grp */
85: u_char tr_rproto; /* routing protocol deployed on router */
86: u_char tr_fttl; /* ttl required to forward on outvif */
87: u_char tr_smask; /* subnet mask for src addr */
88: u_char tr_rflags; /* forwarding error codes */
89: };
90:
91: /* defs within mtrace */
92: #define QUERY 1
93: #define RESP 2
94: #define QLEN sizeof(struct tr_query)
95: #define RLEN sizeof(struct tr_resp)
96:
97: /* fields for tr_rflags (forwarding error codes) */
98: #define TR_NO_ERR 0 /* No error */
99: #define TR_WRONG_IF 1 /* traceroute arrived on non-oif */
100: #define TR_PRUNED 2 /* router has sent a prune upstream */
101: #define TR_OPRUNED 3 /* stop forw. after request from next hop rtr*/
102: #define TR_SCOPED 4 /* group adm. scoped at this hop */
103: #define TR_NO_RTE 5 /* no route for the source */
104: #define TR_NO_LHR 6 /* not the last-hop router */
105: #define TR_NO_FWD 7 /* not forwarding for this (S,G). Reason = ? */
106: #define TR_RP 8 /* I am the RP/Core */
107: #define TR_IIF 9 /* request arrived on the iif */
108: #define TR_NO_MULTI 0x0a /* multicast disabled on that interface */
109: #define TR_NO_SPACE 0x81 /* no space to insert responce data block */
110: #define TR_OLD_ROUTER 0x82 /* previous hop does not support traceroute */
111: #define TR_ADMIN_PROHIB 0x83 /* traceroute adm. prohibited */
112:
113: /* fields for tr_smask */
114: #define TR_GROUP_ONLY 0x2f /* forwarding solely on group state */
115: #define TR_SUBNET_COUNT 0x40 /* pkt count for (S,G) is for source network */
116:
117: /* fields for packets count */
118: #define TR_CANT_COUNT 0xffffffff /* no count can be reported */
119:
120: /* fields for tr_rproto (routing protocol) */
121: #define PROTO_DVMRP 1
122: #define PROTO_MOSPF 2
123: #define PROTO_PIM 3
124: #define PROTO_CBT 4
125: #define PROTO_PIM_SPECIAL 5
126: #define PROTO_PIM_STATIC 6
127: #define PROTO_DVMRP_STATIC 7
128:
129: #define MASK_TO_VAL(x, i) { \
130: u_int32 _x = ntohl(x); \
131: (i) = 1; \
132: while ((_x) <<= 1) \
133: (i)++; \
134: };
135:
136: #define VAL_TO_MASK(x, i) { \
137: x = htonl(~((1 << (32 - (i))) - 1)); \
138: };
139:
140: #define NBR_VERS(n) (((n)->al_pv << 8) + (n)->al_mv)
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