Move tcpdump-3.9/ to tcpdump/. No need for a versioned dir.
[dragonfly.git] / contrib / tcpdump / print-frag6.c
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c8cf0f94
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1/*
2 * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that: (1) source code distributions
7 * retain the above copyright notice and this paragraph in its entirety, (2)
8 * distributions including binary code include the above copyright notice and
9 * this paragraph in its entirety in the documentation or other materials
10 * provided with the distribution, and (3) all advertising materials mentioning
11 * features or use of this software display the following acknowledgement:
12 * ``This product includes software developed by the University of California,
13 * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
14 * the University nor the names of its contributors may be used to endorse
15 * or promote products derived from this software without specific prior
16 * written permission.
17 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
18 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
20 */
21
22#ifndef lint
23static const char rcsid[] _U_ =
24 "@(#) $Header: /tcpdump/master/tcpdump/print-frag6.c,v 1.19.2.1 2005/04/20 22:33:21 guy Exp $";
25#endif
26
27#ifdef HAVE_CONFIG_H
28#include "config.h"
29#endif
30
31#ifdef INET6
32
33#include <tcpdump-stdinc.h>
34
35#include <stdio.h>
36
37#include "ip6.h"
38
39#include "interface.h"
40#include "addrtoname.h"
41#include "extract.h"
42
43int
44frag6_print(register const u_char *bp, register const u_char *bp2)
45{
46 register const struct ip6_frag *dp;
47 register const struct ip6_hdr *ip6;
48
49 dp = (const struct ip6_frag *)bp;
50 ip6 = (const struct ip6_hdr *)bp2;
51
52 TCHECK(dp->ip6f_offlg);
53
54 if (vflag) {
55 printf("frag (0x%08x:%d|%ld)",
56 EXTRACT_32BITS(&dp->ip6f_ident),
57 EXTRACT_16BITS(&dp->ip6f_offlg) & IP6F_OFF_MASK,
58 sizeof(struct ip6_hdr) + EXTRACT_16BITS(&ip6->ip6_plen) -
59 (long)(bp - bp2) - sizeof(struct ip6_frag));
60 } else {
61 printf("frag (%d|%ld)",
62 EXTRACT_16BITS(&dp->ip6f_offlg) & IP6F_OFF_MASK,
63 sizeof(struct ip6_hdr) + EXTRACT_16BITS(&ip6->ip6_plen) -
64 (long)(bp - bp2) - sizeof(struct ip6_frag));
65 }
66
67#if 1
68 /* it is meaningless to decode non-first fragment */
69 if ((EXTRACT_16BITS(&dp->ip6f_offlg) & IP6F_OFF_MASK) != 0)
70 return -1;
71 else
72#endif
73 {
74 fputs(" ", stdout);
75 return sizeof(struct ip6_frag);
76 }
77trunc:
78 fputs("[|frag]", stdout);
79 return -1;
80#undef TCHECK
81}
82#endif /* INET6 */