141c99275SPeter Avalos /*
241c99275SPeter Avalos * Copyright (c) 1988, 1989, 1990, 1991, 1993, 1994
341c99275SPeter Avalos * The Regents of the University of California. All rights reserved.
441c99275SPeter Avalos *
541c99275SPeter Avalos * Redistribution and use in source and binary forms, with or without
641c99275SPeter Avalos * modification, are permitted provided that: (1) source code distributions
741c99275SPeter Avalos * retain the above copyright notice and this paragraph in its entirety, (2)
841c99275SPeter Avalos * distributions including binary code include the above copyright notice and
941c99275SPeter Avalos * this paragraph in its entirety in the documentation or other materials
1041c99275SPeter Avalos * provided with the distribution, and (3) all advertising materials mentioning
1141c99275SPeter Avalos * features or use of this software display the following acknowledgement:
1241c99275SPeter Avalos * ``This product includes software developed by the University of California,
1341c99275SPeter Avalos * Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
1441c99275SPeter Avalos * the University nor the names of its contributors may be used to endorse
1541c99275SPeter Avalos * or promote products derived from this software without specific prior
1641c99275SPeter Avalos * written permission.
1741c99275SPeter Avalos * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
1841c99275SPeter Avalos * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
1941c99275SPeter Avalos * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
2041c99275SPeter Avalos */
2141c99275SPeter Avalos
22411677aeSAaron LI /* \summary: IPv6 routing header printer */
2341c99275SPeter Avalos
2441c99275SPeter Avalos #ifdef HAVE_CONFIG_H
25*ed775ee7SAntonio Huete Jimenez #include <config.h>
2641c99275SPeter Avalos #endif
2741c99275SPeter Avalos
28*ed775ee7SAntonio Huete Jimenez #include "netdissect-stdinc.h"
2941c99275SPeter Avalos
30411677aeSAaron LI #include "netdissect.h"
3141c99275SPeter Avalos #include "addrtoname.h"
3241c99275SPeter Avalos #include "extract.h"
3341c99275SPeter Avalos
34411677aeSAaron LI #include "ip6.h"
35411677aeSAaron LI
3641c99275SPeter Avalos int
rt6_print(netdissect_options * ndo,const u_char * bp,const u_char * bp2 _U_)37*ed775ee7SAntonio Huete Jimenez rt6_print(netdissect_options *ndo, const u_char *bp, const u_char *bp2 _U_)
3841c99275SPeter Avalos {
39*ed775ee7SAntonio Huete Jimenez const struct ip6_rthdr *dp;
40*ed775ee7SAntonio Huete Jimenez const struct ip6_rthdr0 *dp0;
41*ed775ee7SAntonio Huete Jimenez const struct ip6_srh *srh;
42*ed775ee7SAntonio Huete Jimenez u_int i, len, type;
43*ed775ee7SAntonio Huete Jimenez const u_char *p;
4441c99275SPeter Avalos
45*ed775ee7SAntonio Huete Jimenez ndo->ndo_protocol = "rt6";
46*ed775ee7SAntonio Huete Jimenez
47*ed775ee7SAntonio Huete Jimenez nd_print_protocol_caps(ndo);
48411677aeSAaron LI dp = (const struct ip6_rthdr *)bp;
4941c99275SPeter Avalos
50*ed775ee7SAntonio Huete Jimenez len = GET_U_1(dp->ip6r_len);
51*ed775ee7SAntonio Huete Jimenez ND_PRINT(" (len=%u", len); /*)*/
52*ed775ee7SAntonio Huete Jimenez type = GET_U_1(dp->ip6r_type);
53*ed775ee7SAntonio Huete Jimenez ND_PRINT(", type=%u", type);
54*ed775ee7SAntonio Huete Jimenez if (type == IPV6_RTHDR_TYPE_0)
55*ed775ee7SAntonio Huete Jimenez ND_PRINT(" [Deprecated]");
56*ed775ee7SAntonio Huete Jimenez ND_PRINT(", segleft=%u", GET_U_1(dp->ip6r_segleft));
5741c99275SPeter Avalos
58*ed775ee7SAntonio Huete Jimenez switch (type) {
5941c99275SPeter Avalos case IPV6_RTHDR_TYPE_0:
6041c99275SPeter Avalos case IPV6_RTHDR_TYPE_2: /* Mobile IPv6 ID-20 */
61411677aeSAaron LI dp0 = (const struct ip6_rthdr0 *)dp;
6241c99275SPeter Avalos
63*ed775ee7SAntonio Huete Jimenez if (GET_BE_U_4(dp0->ip6r0_reserved) || ndo->ndo_vflag) {
64*ed775ee7SAntonio Huete Jimenez ND_PRINT(", rsv=0x%0x",
65*ed775ee7SAntonio Huete Jimenez GET_BE_U_4(dp0->ip6r0_reserved));
6641c99275SPeter Avalos }
6741c99275SPeter Avalos
68*ed775ee7SAntonio Huete Jimenez if (len % 2 == 1) {
69*ed775ee7SAntonio Huete Jimenez ND_PRINT(" (invalid length %u)", len);
70*ed775ee7SAntonio Huete Jimenez goto invalid;
71*ed775ee7SAntonio Huete Jimenez }
7241c99275SPeter Avalos len >>= 1;
73*ed775ee7SAntonio Huete Jimenez p = (const u_char *) dp0->ip6r0_addr;
7441c99275SPeter Avalos for (i = 0; i < len; i++) {
75*ed775ee7SAntonio Huete Jimenez ND_PRINT(", [%u]%s", i, GET_IP6ADDR_STRING(p));
76*ed775ee7SAntonio Huete Jimenez p += 16;
7741c99275SPeter Avalos }
7841c99275SPeter Avalos /*(*/
79*ed775ee7SAntonio Huete Jimenez ND_PRINT(") ");
80*ed775ee7SAntonio Huete Jimenez return((GET_U_1(dp0->ip6r0_len) + 1) << 3);
8141c99275SPeter Avalos break;
82*ed775ee7SAntonio Huete Jimenez case IPV6_RTHDR_TYPE_4:
83*ed775ee7SAntonio Huete Jimenez srh = (const struct ip6_srh *)dp;
84*ed775ee7SAntonio Huete Jimenez ND_PRINT(", last-entry=%u", GET_U_1(srh->srh_last_ent));
85*ed775ee7SAntonio Huete Jimenez
86*ed775ee7SAntonio Huete Jimenez if (GET_U_1(srh->srh_flags) || ndo->ndo_vflag) {
87*ed775ee7SAntonio Huete Jimenez ND_PRINT(", flags=0x%0x",
88*ed775ee7SAntonio Huete Jimenez GET_U_1(srh->srh_flags));
8941c99275SPeter Avalos }
9041c99275SPeter Avalos
91*ed775ee7SAntonio Huete Jimenez ND_PRINT(", tag=%x", GET_BE_U_2(srh->srh_tag));
92*ed775ee7SAntonio Huete Jimenez
93*ed775ee7SAntonio Huete Jimenez if (len % 2 == 1) {
94*ed775ee7SAntonio Huete Jimenez ND_PRINT(" (invalid length %u)", len);
95*ed775ee7SAntonio Huete Jimenez goto invalid;
96*ed775ee7SAntonio Huete Jimenez }
97*ed775ee7SAntonio Huete Jimenez len >>= 1;
98*ed775ee7SAntonio Huete Jimenez p = (const u_char *) srh->srh_segments;
99*ed775ee7SAntonio Huete Jimenez for (i = 0; i < len; i++) {
100*ed775ee7SAntonio Huete Jimenez ND_PRINT(", [%u]%s", i, GET_IP6ADDR_STRING(p));
101*ed775ee7SAntonio Huete Jimenez p += 16;
102*ed775ee7SAntonio Huete Jimenez }
103*ed775ee7SAntonio Huete Jimenez /*(*/
104*ed775ee7SAntonio Huete Jimenez ND_PRINT(") ");
105*ed775ee7SAntonio Huete Jimenez return((GET_U_1(srh->srh_len) + 1) << 3);
106*ed775ee7SAntonio Huete Jimenez break;
107*ed775ee7SAntonio Huete Jimenez default:
108*ed775ee7SAntonio Huete Jimenez ND_PRINT(" (unknown type)");
109*ed775ee7SAntonio Huete Jimenez goto invalid;
110*ed775ee7SAntonio Huete Jimenez }
111*ed775ee7SAntonio Huete Jimenez
112*ed775ee7SAntonio Huete Jimenez invalid:
113*ed775ee7SAntonio Huete Jimenez nd_print_invalid(ndo);
11441c99275SPeter Avalos return -1;
11541c99275SPeter Avalos }
116