2 * Copyright (c) 1988, 1989, 1990, 1991, 1992, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
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
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.
25 static const char rcsid[] _U_ =
26 "@(#) $Header: /tcpdump/master/tcpdump/print-ip6.c,v 1.47.2.2 2005/07/03 20:36:33 hannes Exp $";
35 #include <tcpdump-stdinc.h>
41 #include "interface.h"
42 #include "addrtoname.h"
49 * print an IP6 datagram.
52 ip6_print(register const u_char *bp, register u_int length)
54 register const struct ip6_hdr *ip6;
58 register const u_char *cp;
59 register u_int payload_len;
64 ip6 = (const struct ip6_hdr *)bp;
67 if (length < sizeof (struct ip6_hdr)) {
68 (void)printf("truncated-ip6 %u", length);
75 payload_len = EXTRACT_16BITS(&ip6->ip6_plen);
76 len = payload_len + sizeof(struct ip6_hdr);
78 (void)printf("truncated-ip6 - %u bytes missing!",
82 flow = EXTRACT_32BITS(&ip6->ip6_flow);
86 if (flow & 0x0f000000)
87 (void)printf("pri 0x%02x, ", (flow & 0x0f000000) >> 24);
88 if (flow & 0x00ffffff)
89 (void)printf("flowlabel 0x%06x, ", flow & 0x00ffffff);
92 if (flow & 0x0ff00000)
93 (void)printf("class 0x%02x, ", (flow & 0x0ff00000) >> 20);
94 if (flow & 0x000fffff)
95 (void)printf("flowlabel 0x%05x, ", flow & 0x000fffff);
98 (void)printf("hlim %u, next-header: %s (%u), length: %u) ",
100 tok2str(ipproto_values,"unknown",ip6->ip6_nxt),
106 * Cut off the snapshot length to the end of the IP payload.
112 cp = (const u_char *)ip6;
113 advance = sizeof(struct ip6_hdr);
115 while (cp < snapend && advance > 0) {
119 if (cp == (const u_char *)(ip6 + 1) &&
120 nh != IPPROTO_TCP && nh != IPPROTO_UDP &&
121 nh != IPPROTO_SCTP) {
122 (void)printf("%s > %s: ", ip6addr_string(&ip6->ip6_src),
123 ip6addr_string(&ip6->ip6_dst));
127 case IPPROTO_HOPOPTS:
128 advance = hbhopt_print(cp);
131 case IPPROTO_DSTOPTS:
132 advance = dstopt_print(cp);
135 case IPPROTO_FRAGMENT:
136 advance = frag6_print(cp, (const u_char *)ip6);
137 if (snapend <= cp + advance)
143 case IPPROTO_MOBILITY_OLD:
144 case IPPROTO_MOBILITY:
146 * XXX - we don't use "advance"; the current
147 * "Mobility Support in IPv6" draft
148 * (draft-ietf-mobileip-ipv6-24) says that
149 * the next header field in a mobility header
150 * should be IPPROTO_NONE, but speaks of
151 * the possiblity of a future extension in
152 * which payload can be piggybacked atop a
155 advance = mobility_print(cp, (const u_char *)ip6);
158 case IPPROTO_ROUTING:
159 advance = rt6_print(cp, (const u_char *)ip6);
163 sctp_print(cp, (const u_char *)ip6, len);
166 tcp_print(cp, len, (const u_char *)ip6, fragmented);
169 udp_print(cp, len, (const u_char *)ip6, fragmented);
172 icmp6_print(cp, len, (const u_char *)ip6, fragmented);
175 advance = ah_print(cp);
181 advance = esp_print(gndo, cp, len, (const u_char *)ip6, &enh, &padlen);
189 advance = ipcomp_print(cp, &enh);
199 ospf6_print(cp, len);
207 ip_print(gndo, cp, len);
211 pgm_print(cp, len, (const u_char *)ip6);
223 (void)printf("no next header");
227 (void)printf("ip-proto-%d %d", ip6->ip6_nxt, len);
234 (void)printf("[|ip6]");