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 1.47.2.3 2005/09/20 06:05:38 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 %u", length
);
73 payload_len
= EXTRACT_16BITS(&ip6
->ip6_plen
);
74 len
= payload_len
+ sizeof(struct ip6_hdr
);
76 (void)printf("truncated-ip6 - %u bytes missing!",
80 flow
= EXTRACT_32BITS(&ip6
->ip6_flow
);
84 if (flow
& 0x0f000000)
85 (void)printf("pri 0x%02x, ", (flow
& 0x0f000000) >> 24);
86 if (flow
& 0x00ffffff)
87 (void)printf("flowlabel 0x%06x, ", flow
& 0x00ffffff);
90 if (flow
& 0x0ff00000)
91 (void)printf("class 0x%02x, ", (flow
& 0x0ff00000) >> 20);
92 if (flow
& 0x000fffff)
93 (void)printf("flowlabel 0x%05x, ", flow
& 0x000fffff);
96 (void)printf("hlim %u, next-header: %s (%u), length: %u) ",
98 tok2str(ipproto_values
,"unknown",ip6
->ip6_nxt
),
104 * Cut off the snapshot length to the end of the IP payload.
110 cp
= (const u_char
*)ip6
;
111 advance
= sizeof(struct ip6_hdr
);
113 while (cp
< snapend
&& advance
> 0) {
117 if (cp
== (const u_char
*)(ip6
+ 1) &&
118 nh
!= IPPROTO_TCP
&& nh
!= IPPROTO_UDP
&&
119 nh
!= IPPROTO_DCCP
&& nh
!= IPPROTO_SCTP
) {
120 (void)printf("%s > %s: ", ip6addr_string(&ip6
->ip6_src
),
121 ip6addr_string(&ip6
->ip6_dst
));
125 case IPPROTO_HOPOPTS
:
126 advance
= hbhopt_print(cp
);
129 case IPPROTO_DSTOPTS
:
130 advance
= dstopt_print(cp
);
133 case IPPROTO_FRAGMENT
:
134 advance
= frag6_print(cp
, (const u_char
*)ip6
);
135 if (snapend
<= cp
+ advance
)
141 case IPPROTO_MOBILITY_OLD
:
142 case IPPROTO_MOBILITY
:
144 * XXX - we don't use "advance"; the current
145 * "Mobility Support in IPv6" draft
146 * (draft-ietf-mobileip-ipv6-24) says that
147 * the next header field in a mobility header
148 * should be IPPROTO_NONE, but speaks of
149 * the possiblity of a future extension in
150 * which payload can be piggybacked atop a
153 advance
= mobility_print(cp
, (const u_char
*)ip6
);
156 case IPPROTO_ROUTING
:
157 advance
= rt6_print(cp
, (const u_char
*)ip6
);
161 sctp_print(cp
, (const u_char
*)ip6
, len
);
164 dccp_print(cp
, (const u_char
*)ip6
, len
);
167 tcp_print(cp
, len
, (const u_char
*)ip6
, fragmented
);
170 udp_print(cp
, len
, (const u_char
*)ip6
, fragmented
);
173 icmp6_print(cp
, len
, (const u_char
*)ip6
, fragmented
);
176 advance
= ah_print(cp
);
182 advance
= esp_print(gndo
, cp
, len
, (const u_char
*)ip6
, &enh
, &padlen
);
190 advance
= ipcomp_print(cp
, &enh
);
200 ospf6_print(cp
, len
);
208 ip_print(gndo
, cp
, len
);
212 pgm_print(cp
, len
, (const u_char
*)ip6
);
224 (void)printf("no next header");
228 (void)printf("ip-proto-%d %d", ip6
->ip6_nxt
, len
);
235 (void)printf("[|ip6]");