2 * Copyright (c) 1988, 1989, 1990, 1991, 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.
22 /* \summary: IPv6 routing header printer */
28 #include "netdissect-stdinc.h"
30 #include "netdissect.h"
31 #include "addrtoname.h"
37 rt6_print(netdissect_options *ndo, const u_char *bp, const u_char *bp2 _U_)
39 const struct ip6_rthdr *dp;
40 const struct ip6_rthdr0 *dp0;
41 const struct ip6_srh *srh;
45 ndo->ndo_protocol = "rt6";
47 nd_print_protocol_caps(ndo);
48 dp = (const struct ip6_rthdr *)bp;
50 len = GET_U_1(dp->ip6r_len);
51 ND_PRINT(" (len=%u", len); /*)*/
52 type = GET_U_1(dp->ip6r_type);
53 ND_PRINT(", type=%u", type);
54 if (type == IPV6_RTHDR_TYPE_0)
55 ND_PRINT(" [Deprecated]");
56 ND_PRINT(", segleft=%u", GET_U_1(dp->ip6r_segleft));
59 case IPV6_RTHDR_TYPE_0:
60 case IPV6_RTHDR_TYPE_2: /* Mobile IPv6 ID-20 */
61 dp0 = (const struct ip6_rthdr0 *)dp;
63 if (GET_BE_U_4(dp0->ip6r0_reserved) || ndo->ndo_vflag) {
64 ND_PRINT(", rsv=0x%0x",
65 GET_BE_U_4(dp0->ip6r0_reserved));
69 ND_PRINT(" (invalid length %u)", len);
73 p = (const u_char *) dp0->ip6r0_addr;
74 for (i = 0; i < len; i++) {
75 ND_PRINT(", [%u]%s", i, GET_IP6ADDR_STRING(p));
80 return((GET_U_1(dp0->ip6r0_len) + 1) << 3);
82 case IPV6_RTHDR_TYPE_4:
83 srh = (const struct ip6_srh *)dp;
84 ND_PRINT(", last-entry=%u", GET_U_1(srh->srh_last_ent));
86 if (GET_U_1(srh->srh_flags) || ndo->ndo_vflag) {
87 ND_PRINT(", flags=0x%0x",
88 GET_U_1(srh->srh_flags));
91 ND_PRINT(", tag=%x", GET_BE_U_2(srh->srh_tag));
94 ND_PRINT(" (invalid length %u)", len);
98 p = (const u_char *) srh->srh_segments;
99 for (i = 0; i < len; i++) {
100 ND_PRINT(", [%u]%s", i, GET_IP6ADDR_STRING(p));
105 return((GET_U_1(srh->srh_len) + 1) << 3);
108 ND_PRINT(" (unknown type)");
113 nd_print_invalid(ndo);