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[] =
26 "@(#) $Header: /tcpdump/master/tcpdump/print-ip6.c,v 1.16 2000/11/17 19:08:15 itojun Exp $";
35 #include <sys/param.h>
37 #include <sys/types.h>
38 #include <sys/socket.h>
40 #include <netinet/in.h>
47 #include "interface.h"
48 #include "addrtoname.h"
53 * print an IP6 datagram.
56 ip6_print(register const u_char *bp, register int length)
58 register const struct ip6_hdr *ip6;
61 register const u_char *cp;
66 ip6 = (const struct ip6_hdr *)bp;
70 * The IP6 header is not 16-byte aligned, so copy into abuf.
71 * This will never happen with BPF. It does happen raw packet
74 if ((u_long)ip6 & 15) {
78 abuf = malloc(snaplen);
79 memcpy(abuf, ip6, min(length, snaplen));
80 snapend += abuf - (u_char *)ip6;
82 ip6 = (struct ip6_hdr *)abuf;
85 if ((u_char *)(ip6 + 1) > snapend) {
89 if (length < sizeof (struct ip6_hdr)) {
90 (void)printf("truncated-ip6 %d", length);
93 advance = sizeof(struct ip6_hdr);
95 len = ntohs(ip6->ip6_plen);
96 if (length < len + advance)
97 (void)printf("truncated-ip6 - %d bytes missing!",
98 len + advance - length);
100 cp = (const u_char *)ip6;
102 while (cp < snapend) {
105 if (cp == (u_char *)(ip6 + 1)
106 && nh != IPPROTO_TCP && nh != IPPROTO_UDP) {
107 (void)printf("%s > %s: ", ip6addr_string(&ip6->ip6_src),
108 ip6addr_string(&ip6->ip6_dst));
112 case IPPROTO_HOPOPTS:
113 advance = hbhopt_print(cp);
116 case IPPROTO_DSTOPTS:
117 advance = dstopt_print(cp);
120 case IPPROTO_FRAGMENT:
121 advance = frag6_print(cp, (const u_char *)ip6);
122 if (snapend <= cp + advance)
127 case IPPROTO_ROUTING:
128 advance = rt6_print(cp, (const u_char *)ip6);
132 tcp_print(cp, len + sizeof(struct ip6_hdr) - (cp - bp),
133 (const u_char *)ip6, fragmented);
136 udp_print(cp, len + sizeof(struct ip6_hdr) - (cp - bp),
137 (const u_char *)ip6, fragmented);
140 icmp6_print(cp, (const u_char *)ip6);
143 advance = ah_print(cp, (const u_char *)ip6);
149 advance = esp_print(cp, (const u_char *)ip6, &enh);
155 #ifndef IPPROTO_IPCOMP
156 #define IPPROTO_IPCOMP 108
161 advance = ipcomp_print(cp, (const u_char *)ip6, &enh);
169 #define IPPROTO_PIM 103
175 #define IPPROTO_OSPF 89
178 ospf6_print(cp, len);
184 #define IPPROTO_IPV4 4
190 (void)printf("no next header");
194 (void)printf("ip-proto-%d %d", ip6->ip6_nxt, len);
201 flow = ntohl(ip6->ip6_flow);
204 if (flow & 0x0f000000)
205 (void)printf(" [pri 0x%x]", (flow & 0x0f000000) >> 24);
206 if (flow & 0x00ffffff)
207 (void)printf(" [flowlabel 0x%x]", flow & 0x00ffffff);
210 if (flow & 0x0ff00000)
211 (void)printf(" [class 0x%x]", (flow & 0x0ff00000) >> 20);
212 if (flow & 0x000fffff)
213 (void)printf(" [flowlabel 0x%x]", flow & 0x000fffff);
216 if (ip6->ip6_hlim <= 1)
217 (void)printf(" [hlim %d]", (int)ip6->ip6_hlim);
221 (void)printf("len %d", len);
222 if (ip6->ip6_hlim > 1)
223 (void)printf(", hlim %d", (int)ip6->ip6_hlim);