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.
23 static const char rcsid[] _U_ =
24 "@(#) $Header: /tcpdump/master/tcpdump/print-ip6.c,v 1.32.2.8 2003/11/24 20:31:22 guy Exp $";
33 #include <tcpdump-stdinc.h>
39 #include "interface.h"
40 #include "addrtoname.h"
47 * print an IP6 datagram.
50 ip6_print(register const u_char *bp, register u_int length)
52 register const struct ip6_hdr *ip6;
56 register const u_char *cp;
57 register u_int payload_len;
62 ip6 = (const struct ip6_hdr *)bp;
65 if (length < sizeof (struct ip6_hdr)) {
66 (void)printf("truncated-ip6 %d", length);
70 payload_len = EXTRACT_16BITS(&ip6->ip6_plen);
71 len = payload_len + sizeof(struct ip6_hdr);
73 (void)printf("truncated-ip6 - %d bytes missing!",
77 * Cut off the snapshot length to the end of the IP payload.
83 cp = (const u_char *)ip6;
84 advance = sizeof(struct ip6_hdr);
86 while (cp < snapend && advance > 0) {
90 if (cp == (const u_char *)(ip6 + 1) &&
91 nh != IPPROTO_TCP && nh != IPPROTO_UDP &&
93 (void)printf("%s > %s: ", ip6addr_string(&ip6->ip6_src),
94 ip6addr_string(&ip6->ip6_dst));
99 advance = hbhopt_print(cp);
102 case IPPROTO_DSTOPTS:
103 advance = dstopt_print(cp);
106 case IPPROTO_FRAGMENT:
107 advance = frag6_print(cp, (const u_char *)ip6);
108 if (snapend <= cp + advance)
114 case IPPROTO_MOBILITY_OLD:
115 case IPPROTO_MOBILITY:
117 * XXX - we don't use "advance"; the current
118 * "Mobility Support in IPv6" draft
119 * (draft-ietf-mobileip-ipv6-24) says that
120 * the next header field in a mobility header
121 * should be IPPROTO_NONE, but speaks of
122 * the possiblity of a future extension in
123 * which payload can be piggybacked atop a
126 advance = mobility_print(cp, (const u_char *)ip6);
129 case IPPROTO_ROUTING:
130 advance = rt6_print(cp, (const u_char *)ip6);
134 sctp_print(cp, (const u_char *)ip6, len);
137 tcp_print(cp, len, (const u_char *)ip6, fragmented);
140 udp_print(cp, len, (const u_char *)ip6, fragmented);
143 icmp6_print(cp, len, (const u_char *)ip6, fragmented);
146 advance = ah_print(cp);
152 advance = esp_print(cp, (const u_char *)ip6, &enh, &padlen);
160 advance = ipcomp_print(cp, &enh);
169 ospf6_print(cp, len);
181 (void)printf("no next header");
185 (void)printf("ip-proto-%d %d", ip6->ip6_nxt, len);
192 flow = EXTRACT_32BITS(&ip6->ip6_flow);
195 if (flow & 0x0f000000)
196 (void)printf(" [pri 0x%x]", (flow & 0x0f000000) >> 24);
197 if (flow & 0x00ffffff)
198 (void)printf(" [flowlabel 0x%x]", flow & 0x00ffffff);
201 if (flow & 0x0ff00000)
202 (void)printf(" [class 0x%x]", (flow & 0x0ff00000) >> 20);
203 if (flow & 0x000fffff)
204 (void)printf(" [flowlabel 0x%x]", flow & 0x000fffff);
207 if (ip6->ip6_hlim <= 1)
208 (void)printf(" [hlim %u]", ip6->ip6_hlim);
212 (void)printf("len %u", payload_len);
213 if (ip6->ip6_hlim > 1)
214 (void)printf(", hlim %d", (int)ip6->ip6_hlim);
219 (void)printf("[|ip6]");