#include "udp.h"
#include "ah.h"
+ /* NetBSD: icmp6.h,v 1.13 2000/08/03 16:30:37 itojun Exp */
+ /* $KAME: icmp6.h,v 1.22 2000/08/03 15:25:16 jinmei Exp $ */
+
+ /*
+ * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the project nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+ struct icmp6_hdr {
+ u_int8_t icmp6_type; /* type field */
+ u_int8_t icmp6_code; /* code field */
+ u_int16_t icmp6_cksum; /* checksum field */
+ union {
+ u_int32_t icmp6_un_data32[1]; /* type-specific field */
+ u_int16_t icmp6_un_data16[2]; /* type-specific field */
+ u_int8_t icmp6_un_data8[4]; /* type-specific field */
+ } icmp6_dataun;
+ };
+
+ #define icmp6_data32 icmp6_dataun.icmp6_un_data32
+ #define icmp6_data16 icmp6_dataun.icmp6_un_data16
+ #define icmp6_data8 icmp6_dataun.icmp6_un_data8
+ #define icmp6_pptr icmp6_data32[0] /* parameter prob */
+ #define icmp6_mtu icmp6_data32[0] /* packet too big */
+ #define icmp6_id icmp6_data16[0] /* echo request/reply */
+ #define icmp6_seq icmp6_data16[1] /* echo request/reply */
+ #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */
+
+ #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */
+ #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */
+ #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */
+ #define ICMP6_PARAM_PROB 4 /* ip6 header bad */
+
+ #define ICMP6_ECHO_REQUEST 128 /* echo service */
+ #define ICMP6_ECHO_REPLY 129 /* echo reply */
+ #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */
+ #define MLD6_LISTENER_QUERY 130 /* multicast listener query */
+ #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */
+ #define MLD6_LISTENER_REPORT 131 /* multicast listener report */
+ #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */
+ #define MLD6_LISTENER_DONE 132 /* multicast listener done */
+
+ #define ND_ROUTER_SOLICIT 133 /* router solicitation */
+ #define ND_ROUTER_ADVERT 134 /* router advertisement */
+ #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */
+ #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisement */
+ #define ND_REDIRECT 137 /* redirect */
+
+ #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */
+
+ #define ICMP6_WRUREQUEST 139 /* who are you request */
+ #define ICMP6_WRUREPLY 140 /* who are you reply */
+ #define ICMP6_FQDN_QUERY 139 /* FQDN query */
+ #define ICMP6_FQDN_REPLY 140 /* FQDN reply */
+ #define ICMP6_NI_QUERY 139 /* node information request */
+ #define ICMP6_NI_REPLY 140 /* node information reply */
+ #define IND_SOLICIT 141 /* inverse neighbor solicitation */
+ #define IND_ADVERT 142 /* inverse neighbor advertisement */
+
+ #define ICMP6_V2_MEMBERSHIP_REPORT 143 /* v2 membership report */
+ #define MLDV2_LISTENER_REPORT 143 /* v2 multicast listener report */
+ #define ICMP6_HADISCOV_REQUEST 144
+ #define ICMP6_HADISCOV_REPLY 145
+ #define ICMP6_MOBILEPREFIX_SOLICIT 146
+ #define ICMP6_MOBILEPREFIX_ADVERT 147
+
+ #define MLD6_MTRACE_RESP 200 /* mtrace response(to sender) */
+ #define MLD6_MTRACE 201 /* mtrace messages */
+
+ #define ICMP6_MAXTYPE 201
+
+ #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */
+ #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */
+ #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */
+ #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */
+ #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */
+ #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */
+
+ #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */
+ #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */
+
+ #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */
+ #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */
+ #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */
+
+ #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */
+
+ #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */
+ #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */
+ #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */
+
+ #define ICMP6_NI_SUCCESS 0 /* node information successful reply */
+ #define ICMP6_NI_REFUSED 1 /* node information request is refused */
+ #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */
+
+ #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */
+ #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */
+ #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */
+
+ /* Used in kernel only */
+ #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */
+ #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */
+
+ /*
+ * Multicast Listener Discovery
+ */
+ struct mld6_hdr {
+ struct icmp6_hdr mld6_hdr;
+ struct in6_addr mld6_addr; /* multicast address */
+ };
+
+ #define mld6_type mld6_hdr.icmp6_type
+ #define mld6_code mld6_hdr.icmp6_code
+ #define mld6_cksum mld6_hdr.icmp6_cksum
+ #define mld6_maxdelay mld6_hdr.icmp6_data16[0]
+ #define mld6_reserved mld6_hdr.icmp6_data16[1]
+
+ #define MLD_MINLEN 24
+ #define MLDV2_MINLEN 28
+
+ /*
+ * Neighbor Discovery
+ */
+
+ struct nd_router_solicit { /* router solicitation */
+ struct icmp6_hdr nd_rs_hdr;
+ /* could be followed by options */
+ };
+
+ #define nd_rs_type nd_rs_hdr.icmp6_type
+ #define nd_rs_code nd_rs_hdr.icmp6_code
+ #define nd_rs_cksum nd_rs_hdr.icmp6_cksum
+ #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0]
+
+ struct nd_router_advert { /* router advertisement */
+ struct icmp6_hdr nd_ra_hdr;
+ u_int32_t nd_ra_reachable; /* reachable time */
+ u_int32_t nd_ra_retransmit; /* retransmit timer */
+ /* could be followed by options */
+ };
+
+ #define nd_ra_type nd_ra_hdr.icmp6_type
+ #define nd_ra_code nd_ra_hdr.icmp6_code
+ #define nd_ra_cksum nd_ra_hdr.icmp6_cksum
+ #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0]
+ #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1]
+ #define ND_RA_FLAG_MANAGED 0x80
+ #define ND_RA_FLAG_OTHER 0x40
+ #define ND_RA_FLAG_HOME_AGENT 0x20
+
+ /*
+ * Router preference values based on draft-draves-ipngwg-router-selection-01.
+ * These are non-standard definitions.
+ */
+ #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */
+
+ #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */
+ #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */
+ #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */
+ #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */
+
+ #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1]
+
+ struct nd_neighbor_solicit { /* neighbor solicitation */
+ struct icmp6_hdr nd_ns_hdr;
+ struct in6_addr nd_ns_target; /*target address */
+ /* could be followed by options */
+ };
+
+ #define nd_ns_type nd_ns_hdr.icmp6_type
+ #define nd_ns_code nd_ns_hdr.icmp6_code
+ #define nd_ns_cksum nd_ns_hdr.icmp6_cksum
+ #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0]
+
+ struct nd_neighbor_advert { /* neighbor advertisement */
+ struct icmp6_hdr nd_na_hdr;
+ struct in6_addr nd_na_target; /* target address */
+ /* could be followed by options */
+ };
+
+ #define nd_na_type nd_na_hdr.icmp6_type
+ #define nd_na_code nd_na_hdr.icmp6_code
+ #define nd_na_cksum nd_na_hdr.icmp6_cksum
+ #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0]
+
+ #define ND_NA_FLAG_ROUTER 0x80000000
+ #define ND_NA_FLAG_SOLICITED 0x40000000
+ #define ND_NA_FLAG_OVERRIDE 0x20000000
+
+ struct nd_redirect { /* redirect */
+ struct icmp6_hdr nd_rd_hdr;
+ struct in6_addr nd_rd_target; /* target address */
+ struct in6_addr nd_rd_dst; /* destination address */
+ /* could be followed by options */
+ };
+
+ #define nd_rd_type nd_rd_hdr.icmp6_type
+ #define nd_rd_code nd_rd_hdr.icmp6_code
+ #define nd_rd_cksum nd_rd_hdr.icmp6_cksum
+ #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0]
+
+ struct nd_opt_hdr { /* Neighbor discovery option header */
+ u_int8_t nd_opt_type;
+ u_int8_t nd_opt_len;
+ /* followed by option specific data*/
+ };
+
+ #define ND_OPT_SOURCE_LINKADDR 1
+ #define ND_OPT_TARGET_LINKADDR 2
+ #define ND_OPT_PREFIX_INFORMATION 3
+ #define ND_OPT_REDIRECTED_HEADER 4
+ #define ND_OPT_MTU 5
+ #define ND_OPT_ADVINTERVAL 7
+ #define ND_OPT_HOMEAGENT_INFO 8
+ #define ND_OPT_ROUTE_INFO 24 /* RFC4191 */
+ #define ND_OPT_RDNSS 25
+ #define ND_OPT_DNSSL 31
+
+ struct nd_opt_prefix_info { /* prefix information */
+ u_int8_t nd_opt_pi_type;
+ u_int8_t nd_opt_pi_len;
+ u_int8_t nd_opt_pi_prefix_len;
+ u_int8_t nd_opt_pi_flags_reserved;
+ u_int8_t nd_opt_pi_valid_time[4];
+ u_int8_t nd_opt_pi_preferred_time[4];
+ u_int8_t nd_opt_pi_reserved2[4];
+ struct in6_addr nd_opt_pi_prefix;
+ };
+
+ #define ND_OPT_PI_FLAG_ONLINK 0x80
+ #define ND_OPT_PI_FLAG_AUTO 0x40
+ #define ND_OPT_PI_FLAG_ROUTER 0x20 /*2292bis*/
+
+ struct nd_opt_rd_hdr { /* redirected header */
+ u_int8_t nd_opt_rh_type;
+ u_int8_t nd_opt_rh_len;
+ u_int16_t nd_opt_rh_reserved1;
+ u_int32_t nd_opt_rh_reserved2;
+ /* followed by IP header and data */
+ };
+
+ struct nd_opt_mtu { /* MTU option */
+ u_int8_t nd_opt_mtu_type;
+ u_int8_t nd_opt_mtu_len;
+ u_int16_t nd_opt_mtu_reserved;
+ u_int32_t nd_opt_mtu_mtu;
+ };
+
+ struct nd_opt_rdnss { /* RDNSS RFC 6106 5.1 */
+ u_int8_t nd_opt_rdnss_type;
+ u_int8_t nd_opt_rdnss_len;
+ u_int16_t nd_opt_rdnss_reserved;
+ u_int32_t nd_opt_rdnss_lifetime;
+ struct in6_addr nd_opt_rdnss_addr[1]; /* variable-length */
+ };
+
+ struct nd_opt_dnssl { /* DNSSL RFC 6106 5.2 */
+ u_int8_t nd_opt_dnssl_type;
+ u_int8_t nd_opt_dnssl_len;
+ u_int16_t nd_opt_dnssl_reserved;
+ u_int32_t nd_opt_dnssl_lifetime;
+ /* followed by list of DNS search domains, variable-length */
+ };
+
+ struct nd_opt_advinterval { /* Advertisement interval option */
+ u_int8_t nd_opt_adv_type;
+ u_int8_t nd_opt_adv_len;
+ u_int16_t nd_opt_adv_reserved;
+ u_int32_t nd_opt_adv_interval;
+ };
+
+ struct nd_opt_homeagent_info { /* Home Agent info */
+ u_int8_t nd_opt_hai_type;
+ u_int8_t nd_opt_hai_len;
+ u_int16_t nd_opt_hai_reserved;
+ int16_t nd_opt_hai_preference;
+ u_int16_t nd_opt_hai_lifetime;
+ };
+
+ struct nd_opt_route_info { /* route info */
+ u_int8_t nd_opt_rti_type;
+ u_int8_t nd_opt_rti_len;
+ u_int8_t nd_opt_rti_prefixlen;
+ u_int8_t nd_opt_rti_flags;
+ u_int32_t nd_opt_rti_lifetime;
+ /* prefix follows */
+ };
+
+ /*
+ * icmp6 namelookup
+ */
+
+ struct icmp6_namelookup {
+ struct icmp6_hdr icmp6_nl_hdr;
+ u_int8_t icmp6_nl_nonce[8];
+ int32_t icmp6_nl_ttl;
+ #if 0
+ u_int8_t icmp6_nl_len;
+ u_int8_t icmp6_nl_name[3];
+ #endif
+ /* could be followed by options */
+ };
+
+ /*
+ * icmp6 node information
+ */
+ struct icmp6_nodeinfo {
+ struct icmp6_hdr icmp6_ni_hdr;
+ u_int8_t icmp6_ni_nonce[8];
+ /* could be followed by reply data */
+ };
+
+ #define ni_type icmp6_ni_hdr.icmp6_type
+ #define ni_code icmp6_ni_hdr.icmp6_code
+ #define ni_cksum icmp6_ni_hdr.icmp6_cksum
+ #define ni_qtype icmp6_ni_hdr.icmp6_data16[0]
+ #define ni_flags icmp6_ni_hdr.icmp6_data16[1]
+
+ #define NI_QTYPE_NOOP 0 /* NOOP */
+ #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */
+ #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */
+ #define NI_QTYPE_DNSNAME 2 /* DNS Name */
+ #define NI_QTYPE_NODEADDR 3 /* Node Addresses */
+ #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */
+
+ /* network endian */
+ #define NI_SUPTYPE_FLAG_COMPRESS ((u_int16_t)htons(0x1))
+ #define NI_FQDN_FLAG_VALIDTTL ((u_int16_t)htons(0x1))
+
+ /* network endian */
+ #define NI_NODEADDR_FLAG_TRUNCATE ((u_int16_t)htons(0x1))
+ #define NI_NODEADDR_FLAG_ALL ((u_int16_t)htons(0x2))
+ #define NI_NODEADDR_FLAG_COMPAT ((u_int16_t)htons(0x4))
+ #define NI_NODEADDR_FLAG_LINKLOCAL ((u_int16_t)htons(0x8))
+ #define NI_NODEADDR_FLAG_SITELOCAL ((u_int16_t)htons(0x10))
+ #define NI_NODEADDR_FLAG_GLOBAL ((u_int16_t)htons(0x20))
+ #define NI_NODEADDR_FLAG_ANYCAST ((u_int16_t)htons(0x40)) /* just experimental. not in spec */
+
+ struct ni_reply_fqdn {
+ u_int32_t ni_fqdn_ttl; /* TTL */
+ u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */
+ u_int8_t ni_fqdn_name[3]; /* XXX: alignment */
+ };
+
+ /*
+ * Router Renumbering. as router-renum-08.txt
+ */
+ struct icmp6_router_renum { /* router renumbering header */
+ struct icmp6_hdr rr_hdr;
+ u_int8_t rr_segnum;
+ u_int8_t rr_flags;
+ u_int16_t rr_maxdelay;
+ u_int32_t rr_reserved;
+ };
+ #define ICMP6_RR_FLAGS_TEST 0x80
+ #define ICMP6_RR_FLAGS_REQRESULT 0x40
+ #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20
+ #define ICMP6_RR_FLAGS_SPECSITE 0x10
+ #define ICMP6_RR_FLAGS_PREVDONE 0x08
+
+ #define rr_type rr_hdr.icmp6_type
+ #define rr_code rr_hdr.icmp6_code
+ #define rr_cksum rr_hdr.icmp6_cksum
+ #define rr_seqnum rr_hdr.icmp6_data32[0]
+
+ struct rr_pco_match { /* match prefix part */
+ u_int8_t rpm_code;
+ u_int8_t rpm_len;
+ u_int8_t rpm_ordinal;
+ u_int8_t rpm_matchlen;
+ u_int8_t rpm_minlen;
+ u_int8_t rpm_maxlen;
+ u_int16_t rpm_reserved;
+ struct in6_addr rpm_prefix;
+ };
+
+ #define RPM_PCO_ADD 1
+ #define RPM_PCO_CHANGE 2
+ #define RPM_PCO_SETGLOBAL 3
+ #define RPM_PCO_MAX 4
+
+ struct rr_pco_use { /* use prefix part */
+ u_int8_t rpu_uselen;
+ u_int8_t rpu_keeplen;
+ u_int8_t rpu_ramask;
+ u_int8_t rpu_raflags;
+ u_int32_t rpu_vltime;
+ u_int32_t rpu_pltime;
+ u_int32_t rpu_flags;
+ struct in6_addr rpu_prefix;
+ };
+ #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80
+ #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40
+
+ /* network endian */
+ #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME ((u_int32_t)htonl(0x80000000))
+ #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME ((u_int32_t)htonl(0x40000000))
+
+ struct rr_result { /* router renumbering result message */
+ u_int16_t rrr_flags;
+ u_int8_t rrr_ordinal;
+ u_int8_t rrr_matchedlen;
+ u_int32_t rrr_ifid;
+ struct in6_addr rrr_prefix;
+ };
+ /* network endian */
+ #define ICMP6_RR_RESULT_FLAGS_OOB ((u_int16_t)htons(0x0002))
+ #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN ((u_int16_t)htons(0x0001))
+
static const char *get_rtpref(u_int);
static const char *get_lifetime(u_int32_t);
-static void print_lladdr(const u_char *, size_t);
-static void icmp6_opt_print(const u_char *, int);
-static void mld6_print(const u_char *);
-static void mldv2_report_print(const u_char *, u_int);
-static void mldv2_query_print(const u_char *, u_int);
-static struct udphdr *get_upperlayer(u_char *, u_int *);
-static void dnsname_print(const u_char *, const u_char *);
-static void icmp6_nodeinfo_print(u_int, const u_char *, const u_char *);
-static void icmp6_rrenum_print(const u_char *, const u_char *);
+static void print_lladdr(netdissect_options *ndo, const u_char *, size_t);
+static void icmp6_opt_print(netdissect_options *ndo, const u_char *, int);
+static void mld6_print(netdissect_options *ndo, const u_char *);
+static void mldv2_report_print(netdissect_options *ndo, const u_char *, u_int);
+static void mldv2_query_print(netdissect_options *ndo, const u_char *, u_int);
+static struct udphdr *get_upperlayer(netdissect_options *ndo, u_char *, u_int *);
+static void dnsname_print(netdissect_options *ndo, const u_char *, const u_char *);
+static void icmp6_nodeinfo_print(netdissect_options *ndo, u_int, const u_char *, const u_char *);
+static void icmp6_rrenum_print(netdissect_options *ndo, const u_char *, const u_char *);
#ifndef abs
#define abs(a) ((0 < (a)) ? (a) : -(a))
projects / tcpdump / commitdiff
