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wireshark/epan/dissectors/packet-ipv6.c

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/* packet-ipv6.c
* Routines for IPv6 packet disassembly
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SHIM6 support added by Matthijs Mekking <matthijs@NLnetLabs.nl>
*
* MobileIPv6 support added by Tomislav Borosa <tomislav.borosa@siemens.hr>
*
* Added support for new IPv6 Hop by Hop PMTU Option <bob.hinden@gmail.com>
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "config.h"
#include <math.h>
#include <epan/packet.h>
#include <epan/capture_dissectors.h>
#include <epan/expert.h>
#include <epan/ip_opts.h>
#include <epan/addr_resolv.h>
#include <epan/maxmind_db.h>
#include <epan/prefs.h>
#include <epan/uat.h>
#include <epan/conversation_table.h>
#include <epan/conversation_filter.h>
#include <epan/reassemble.h>
#include <epan/ipproto.h>
#include <epan/etypes.h>
#include <epan/ppptypes.h>
#include <epan/aftypes.h>
#include <epan/nlpid.h>
#include <epan/arcnet_pids.h>
#include <epan/decode_as.h>
#include <epan/proto_data.h>
#include <epan/to_str.h>
#include <epan/exported_pdu.h>
#include <wiretap/erf_record.h>
#include <wsutil/str_util.h>
#include "packet-ip.h"
#include "packet-juniper.h"
#include "packet-sflow.h"
#include "packet-vxlan.h"
#include "packet-mpls.h"
#include "packet-nsh.h"
void proto_register_ipv6(void);
void proto_reg_handoff_ipv6(void);
/* Offsets of fields within an IPv6 header. */
#define IP6H_CTL_VFC 0
#define IP6H_CTL_FLOW 0
#define IP6H_CTL_PLEN 4
#define IP6H_CTL_NXT 6
#define IP6H_CTL_HLIM 7
#define IP6H_SRC 8
#define IP6H_DST 24
/* Option types and related macros */
#define IP6OPT_PAD1 0x00 /* 00 0 00000 = 0 */
#define IP6OPT_PADN 0x01 /* 00 0 00001 = 1 */
#define IP6OPT_TEL 0x04 /* 00 0 00100 = 4 */
#define IP6OPT_RTALERT 0x05 /* 00 0 00101 = 5 */
#define IP6OPT_CALIPSO 0x07 /* 00 0 00111 = 7 */
#define IP6OPT_SMF_DPD 0x08 /* 00 0 01000 = 8 */
#define IP6OPT_PDM 0x0F /* 00 0 01111 = 15 */
#define IP6OPT_APN6 0x13 /* 00 0 10003 = 19 */
#define IP6OPT_EXP_1E 0x1E /* 00 0 11110 = 30 */
#define IP6OPT_QUICKSTART 0x26 /* 00 1 00110 = 38 */
#define IP6OPT_PMTU 0x30 /* 00 1 10000 = 48 */
#define IP6OPT_IOAM 0x31 /* 00 1 10001 = 49 */
#define IP6OPT_EXP_3E 0x3E /* 00 1 11110 = 62 */
#define IP6OPT_TPF 0x41 /* 01 0 00001 = 65 */
#define IP6OPT_EXP_5E 0x5E /* 01 0 11110 = 94 */
#define IP6OPT_RPL 0x63 /* 01 1 00011 = 99 */
#define IP6OPT_MPL 0x6D /* 01 1 01101 = 109 */
#define IP6OPT_EXP_7E 0x7E /* 01 1 11110 = 126 */
#define IP6OPT_ENDI 0x8A /* 10 0 01010 = 138 */ /* DEPRECATED */
#define IP6OPT_ILNP_NONCE 0x8B /* 10 0 01011 = 139 */
#define IP6OPT_LIO 0x8C /* 10 0 01100 = 140 */
#define IP6OPT_EXP_9E 0x9E /* 10 0 11110 = 158 */
#define IP6OPT_EXP_BE 0xBE /* 10 1 11110 = 190 */
#define IP6OPT_JUMBO 0xC2 /* 11 0 00010 = 194 */
#define IP6OPT_HOME_ADDRESS 0xC9 /* 11 0 01001 = 201 */
#define IP6OPT_EXP_DE 0xDE /* 11 0 11110 = 222 */
#define IP6OPT_IP_DFF 0xEE /* 11 1 01110 = 238 */
#define IP6OPT_EXP_FE 0xFE /* 11 1 11110 = 254 */
#define IP6OPT_RTALERT_MLD 0 /* Datagram contains MLD msg */
#define IP6OPT_RTALERT_RSVP 1 /* Datagram contains RSVP msg */
#define IP6OPT_RTALERT_ACTNET 2 /* Datagram contains ACTNET msg */
/* RPL Routing header */
#define IP6RRPL_BITMASK_CMPRI 0xF0000000
#define IP6RRPL_BITMASK_CMPRE 0x0F000000
#define IP6RRPL_BITMASK_PAD 0x00F00000
#define IP6RRPL_BITMASK_RESERVED 0x000FFFFF
/* IOAM Option-Types */
#define IP6IOAM_PRE_TRACE 0 /* Pre-allocated Trace */
#define IP6IOAM_INC_TRACE 1 /* Incremental Trace */
#define IP6IOAM_POT 2 /* Proof of Transit */
#define IP6IOAM_E2E 3 /* Edge to Edge */
/* IOAM Trace Types */
#define IP6IOAM_TRACE_MASK_BIT0 (1 << 23) /* Hop_lim + Node ID */
#define IP6IOAM_TRACE_MASK_BIT1 (1 << 22) /* Ingress and Egress IDs */
#define IP6IOAM_TRACE_MASK_BIT2 (1 << 21) /* Timestamp seconds */
#define IP6IOAM_TRACE_MASK_BIT3 (1 << 20) /* Timestamp fraction */
#define IP6IOAM_TRACE_MASK_BIT4 (1 << 19) /* Transit delay */
#define IP6IOAM_TRACE_MASK_BIT5 (1 << 18) /* IOAM-Namespace data */
#define IP6IOAM_TRACE_MASK_BIT6 (1 << 17) /* Queue depth */
#define IP6IOAM_TRACE_MASK_BIT7 (1 << 16) /* Checksum complement */
#define IP6IOAM_TRACE_MASK_BIT8 (1 << 15) /* (wide) Hop_lim + Node ID */
#define IP6IOAM_TRACE_MASK_BIT9 (1 << 14) /* (wide) Ingress and Egress IDs */
#define IP6IOAM_TRACE_MASK_BIT10 (1 << 13) /* (wide) IOAM-Namespace data */
#define IP6IOAM_TRACE_MASK_BIT11 (1 << 12) /* Buffer occupancy */
#define IP6IOAM_TRACE_MASK_BIT12 (1 << 11) /* Undefined */
#define IP6IOAM_TRACE_MASK_BIT13 (1 << 10) /* Undefined */
#define IP6IOAM_TRACE_MASK_BIT14 (1 << 9) /* Undefined */
#define IP6IOAM_TRACE_MASK_BIT15 (1 << 8) /* Undefined */
#define IP6IOAM_TRACE_MASK_BIT16 (1 << 7) /* Undefined */
#define IP6IOAM_TRACE_MASK_BIT17 (1 << 6) /* Undefined */
#define IP6IOAM_TRACE_MASK_BIT18 (1 << 5) /* Undefined */
#define IP6IOAM_TRACE_MASK_BIT19 (1 << 4) /* Undefined */
#define IP6IOAM_TRACE_MASK_BIT20 (1 << 3) /* Undefined */
#define IP6IOAM_TRACE_MASK_BIT21 (1 << 2) /* Undefined */
#define IP6IOAM_TRACE_MASK_BIT22 (1 << 1) /* Opaque state snapshot */
/* Protocol specific data indices */
#define IPV6_PROTO_VALUE 1
#define IPV6_PROTO_PINFO 2
static int ipv6_tap = -1;
static int exported_pdu_tap = -1;
static int proto_ipv6 = -1;
static int proto_ipv6_hopopts = -1;
static int proto_ipv6_routing = -1;
static int proto_ipv6_fraghdr = -1;
static int proto_ipv6_dstopts = -1;
static int proto_ipv6_routing_rt0 = -1;
static int proto_ipv6_routing_mipv6 = -1;
static int proto_ipv6_routing_rpl = -1;
static int proto_ipv6_routing_srh = -1;
static int proto_ipv6_routing_crh = -1;
static int hf_ipv6_version = -1;
static int hf_ip_version = -1;
static int hf_ipv6_tclass = -1;
static int hf_ipv6_tclass_dscp = -1;
static int hf_ipv6_tclass_ecn = -1;
static int hf_ipv6_flow = -1;
static int hf_ipv6_plen = -1;
static int hf_ipv6_nxt = -1;
static int hf_ipv6_hlim = -1;
static int hf_ipv6_src = -1;
static int hf_ipv6_src_addr_space = -1;
static int hf_ipv6_src_multicast_flags = -1;
static int hf_ipv6_src_multicast_flags_reserved = -1;
static int hf_ipv6_src_multicast_flags_transient = -1;
static int hf_ipv6_src_multicast_flags_network_prefix = -1;
static int hf_ipv6_src_multicast_flags_embed_rp = -1;
static int hf_ipv6_src_special_purpose = -1;
static int hf_ipv6_src_multicast_scope = -1;
static int hf_ipv6_src_host = -1;
static int hf_ipv6_src_slaac_mac = -1;
static int hf_ipv6_src_isatap_ipv4 = -1;
static int hf_ipv6_src_6to4_gateway_ipv4 = -1;
static int hf_ipv6_src_6to4_sla_id = -1;
static int hf_ipv6_src_teredo_server_ipv4 = -1;
static int hf_ipv6_src_teredo_port = -1;
static int hf_ipv6_src_teredo_client_ipv4 = -1;
static int hf_ipv6_src_embed_ipv4 = -1;
static int hf_ipv6_dst = -1;
static int hf_ipv6_dst_addr_space = -1;
static int hf_ipv6_dst_multicast_flags = -1;
static int hf_ipv6_dst_multicast_flags_reserved = -1;
static int hf_ipv6_dst_multicast_flags_transient = -1;
static int hf_ipv6_dst_multicast_flags_network_prefix = -1;
static int hf_ipv6_dst_multicast_flags_embed_rp = -1;
static int hf_ipv6_dst_multicast_scope = -1;
static int hf_ipv6_dst_special_purpose = -1;
static int hf_ipv6_dst_host = -1;
static int hf_ipv6_dst_slaac_mac = -1;
static int hf_ipv6_dst_isatap_ipv4 = -1;
static int hf_ipv6_dst_6to4_gateway_ipv4 = -1;
static int hf_ipv6_dst_6to4_sla_id = -1;
static int hf_ipv6_dst_teredo_server_ipv4 = -1;
static int hf_ipv6_dst_teredo_port = -1;
static int hf_ipv6_dst_teredo_client_ipv4 = -1;
static int hf_ipv6_dst_embed_ipv4 = -1;
static int hf_ipv6_addr = -1;
static int hf_ipv6_addr_space = -1;
static int hf_ipv6_multicast_flags = -1;
static int hf_ipv6_multicast_flags_reserved = -1;
static int hf_ipv6_multicast_flags_transient = -1;
static int hf_ipv6_multicast_flags_network_prefix = -1;
static int hf_ipv6_multicast_flags_embed_rp = -1;
static int hf_ipv6_multicast_scope = -1;
static int hf_ipv6_addr_special_purpose = -1;
static int hf_ipv6_host = -1;
static int hf_ipv6_slaac_mac = -1;
static int hf_ipv6_isatap_ipv4 = -1;
static int hf_ipv6_6to4_gateway_ipv4 = -1;
static int hf_ipv6_6to4_sla_id = -1;
static int hf_ipv6_teredo_server_ipv4 = -1;
static int hf_ipv6_teredo_port = -1;
static int hf_ipv6_teredo_client_ipv4 = -1;
static int hf_ipv6_embed_ipv4_prefix = -1;
static int hf_ipv6_embed_ipv4 = -1;
static int hf_ipv6_embed_ipv4_u = -1;
static int hf_ipv6_embed_ipv4_suffix = -1;
static int hf_ipv6_opt = -1;
static int hf_ipv6_opt_type = -1;
static int hf_ipv6_opt_type_action = -1;
static int hf_ipv6_opt_type_change = -1;
static int hf_ipv6_opt_type_rest = -1;
static int hf_ipv6_opt_length = -1;
static int hf_ipv6_opt_pad1 = -1;
static int hf_ipv6_opt_padn = -1;
static int hf_ipv6_opt_tel = -1;
static int hf_ipv6_opt_rtalert = -1;
static int hf_ipv6_opt_pmtu_min = -1;
static int hf_ipv6_opt_pmtu_rtn = -1;
static int hf_ipv6_opt_pmtu_rtn_flag = -1;
static int hf_ipv6_opt_apn_id_type = -1;
static int hf_ipv6_opt_apn_flags = -1;
static int hf_ipv6_opt_apn_param_type = -1;
static int hf_ipv6_opt_apn_id_part1 = -1;
static int hf_ipv6_opt_apn_id_part2 = -1;
static int hf_ipv6_opt_apn_id_part3 = -1;
static int hf_ipv6_opt_apn_id_part4 = -1;
static int hf_ipv6_opt_jumbo = -1;
static int hf_ipv6_opt_calipso_doi = -1;
static int hf_ipv6_opt_calipso_cmpt_length = -1;
static int hf_ipv6_opt_calipso_sens_level = -1;
static int hf_ipv6_opt_calipso_checksum = -1;
static int hf_ipv6_opt_calipso_cmpt_bitmap = -1;
static int hf_ipv6_opt_smf_dpd_hash_bit = -1;
static int hf_ipv6_opt_smf_dpd_tid_type = -1;
static int hf_ipv6_opt_smf_dpd_tid_len = -1;
static int hf_ipv6_opt_smf_dpd_tagger_id = -1;
static int hf_ipv6_opt_smf_dpd_ident = -1;
static int hf_ipv6_opt_smf_dpd_hav = -1;
static int hf_ipv6_opt_pdm_scale_dtlr = -1;
static int hf_ipv6_opt_pdm_scale_dtls = -1;
static int hf_ipv6_opt_pdm_psn_this_pkt = -1;
static int hf_ipv6_opt_pdm_psn_last_recv = -1;
static int hf_ipv6_opt_pdm_delta_last_recv = -1;
static int hf_ipv6_opt_pdm_delta_last_sent = -1;
static int hf_ipv6_opt_qs_func = -1;
static int hf_ipv6_opt_qs_rate = -1;
static int hf_ipv6_opt_qs_ttl = -1;
static int hf_ipv6_opt_qs_ttl_diff = -1;
static int hf_ipv6_opt_qs_unused = -1;
static int hf_ipv6_opt_qs_nonce = -1;
static int hf_ipv6_opt_qs_reserved = -1;
static int hf_ipv6_opt_ioam_rsv = -1;
static int hf_ipv6_opt_ioam_opt_type = -1;
static int hf_ipv6_opt_ioam_trace_ns = -1;
static int hf_ipv6_opt_ioam_trace_nodelen = -1;
static int hf_ipv6_opt_ioam_trace_flags = -1;
static int hf_ipv6_opt_ioam_trace_flag_o = -1;
static int hf_ipv6_opt_ioam_trace_flag_l = -1;
static int hf_ipv6_opt_ioam_trace_flag_a = -1;
static int hf_ipv6_opt_ioam_trace_flag_rsv = -1;
static int hf_ipv6_opt_ioam_trace_remlen = -1;
static int hf_ipv6_opt_ioam_trace_type = -1;
static int hf_ipv6_opt_ioam_trace_type_bit0 = -1;
static int hf_ipv6_opt_ioam_trace_type_bit1 = -1;
static int hf_ipv6_opt_ioam_trace_type_bit2 = -1;
static int hf_ipv6_opt_ioam_trace_type_bit3 = -1;
static int hf_ipv6_opt_ioam_trace_type_bit4 = -1;
static int hf_ipv6_opt_ioam_trace_type_bit5 = -1;
static int hf_ipv6_opt_ioam_trace_type_bit6 = -1;
static int hf_ipv6_opt_ioam_trace_type_bit7 = -1;
static int hf_ipv6_opt_ioam_trace_type_bit8 = -1;
static int hf_ipv6_opt_ioam_trace_type_bit9 = -1;
static int hf_ipv6_opt_ioam_trace_type_bit10 = -1;
static int hf_ipv6_opt_ioam_trace_type_bit11 = -1;
static int hf_ipv6_opt_ioam_trace_type_undef = -1;
static int hf_ipv6_opt_ioam_trace_type_bit22 = -1;
static int hf_ipv6_opt_ioam_trace_type_rsv = -1;
static int hf_ipv6_opt_ioam_trace_rsv = -1;
static int hf_ipv6_opt_ioam_trace_free_space = -1;
static int hf_ipv6_opt_ioam_trace_node_hlim = -1;
static int hf_ipv6_opt_ioam_trace_node_id = -1;
static int hf_ipv6_opt_ioam_trace_node_iif = -1;
static int hf_ipv6_opt_ioam_trace_node_eif = -1;
static int hf_ipv6_opt_ioam_trace_node_tss = -1;
static int hf_ipv6_opt_ioam_trace_node_tsf = -1;
static int hf_ipv6_opt_ioam_trace_node_trdelay = -1;
static int hf_ipv6_opt_ioam_trace_node_nsdata = -1;
static int hf_ipv6_opt_ioam_trace_node_qdepth = -1;
static int hf_ipv6_opt_ioam_trace_node_csum = -1;
static int hf_ipv6_opt_ioam_trace_node_id_wide = -1;
static int hf_ipv6_opt_ioam_trace_node_iif_wide = -1;
static int hf_ipv6_opt_ioam_trace_node_eif_wide = -1;
static int hf_ipv6_opt_ioam_trace_node_nsdata_wide = -1;
static int hf_ipv6_opt_ioam_trace_node_bufoccup = -1;
static int hf_ipv6_opt_ioam_trace_node_undefined = -1;
static int hf_ipv6_opt_ioam_trace_node_oss_len = -1;
static int hf_ipv6_opt_ioam_trace_node_oss_scid = -1;
static int hf_ipv6_opt_ioam_trace_node_oss_data = -1;
static int hf_ipv6_opt_tpf_information = -1;
static int hf_ipv6_opt_mipv6_home_address = -1;
static int hf_ipv6_opt_rpl_flag = -1;
static int hf_ipv6_opt_rpl_flag_o = -1;
static int hf_ipv6_opt_rpl_flag_r = -1;
static int hf_ipv6_opt_rpl_flag_f = -1;
static int hf_ipv6_opt_rpl_flag_rsv = -1;
static int hf_ipv6_opt_rpl_instance_id = -1;
static int hf_ipv6_opt_rpl_senderrank = -1;
static int hf_ipv6_opt_ilnp_nonce = -1;
static int hf_ipv6_opt_lio_len = -1;
static int hf_ipv6_opt_lio_id = -1;
static int hf_ipv6_opt_mpl_flag = -1;
static int hf_ipv6_opt_mpl_flag_s = -1;
static int hf_ipv6_opt_mpl_flag_m = -1;
static int hf_ipv6_opt_mpl_flag_v = -1;
static int hf_ipv6_opt_mpl_flag_rsv = -1;
static int hf_ipv6_opt_mpl_sequence = -1;
static int hf_ipv6_opt_mpl_seed_id = -1;
static int hf_ipv6_opt_dff_flags = -1;
static int hf_ipv6_opt_dff_flag_ver = -1;
static int hf_ipv6_opt_dff_flag_dup = -1;
static int hf_ipv6_opt_dff_flag_ret = -1;
static int hf_ipv6_opt_dff_flag_rsv = -1;
static int hf_ipv6_opt_dff_seqnum = -1;
static int hf_ipv6_opt_experimental = -1;
static int hf_ipv6_opt_unknown_data = -1;
static int hf_ipv6_opt_unknown = -1;
static int hf_ipv6_dstopts_nxt = -1;
static int hf_ipv6_dstopts_len = -1;
static int hf_ipv6_dstopts_len_oct = -1;
static int hf_ipv6_hopopts_nxt = -1;
static int hf_ipv6_hopopts_len = -1;
static int hf_ipv6_hopopts_len_oct = -1;
static int hf_ipv6_routing_nxt = -1;
static int hf_ipv6_routing_len = -1;
static int hf_ipv6_routing_len_oct = -1;
static int hf_ipv6_routing_type = -1;
static int hf_ipv6_routing_segleft = -1;
static int hf_ipv6_routing_unknown_data = -1;
static int hf_ipv6_fraghdr_nxt = -1;
static int hf_ipv6_fraghdr_reserved_octet = -1;
static int hf_ipv6_fraghdr_offset = -1;
static int hf_ipv6_fraghdr_reserved_bits = -1;
static int hf_ipv6_fraghdr_more = -1;
static int hf_ipv6_fraghdr_ident = -1;
static int hf_ipv6_fragment = -1;
static int hf_ipv6_fragment_overlap = -1;
static int hf_ipv6_fragment_overlap_conflict = -1;
static int hf_ipv6_fragment_multiple_tails = -1;
static int hf_ipv6_fragment_too_long_fragment = -1;
static int hf_ipv6_fragment_error = -1;
static int hf_ipv6_fragment_count = -1;
static int hf_ipv6_fragments = -1;
static int hf_ipv6_reassembled_in = -1;
static int hf_ipv6_reassembled_length = -1;
static int hf_ipv6_reassembled_data = -1;
static int hf_ipv6_routing_src_reserved = -1;
static int hf_ipv6_routing_src_addr = -1;
static int hf_ipv6_routing_mipv6_reserved = -1;
static int hf_ipv6_routing_mipv6_home_address = -1;
static int hf_ipv6_routing_rpl_cmprI = -1;
static int hf_ipv6_routing_rpl_cmprE = -1;
static int hf_ipv6_routing_rpl_pad = -1;
static int hf_ipv6_routing_rpl_reserved = -1;
static int hf_ipv6_routing_rpl_addr_count = -1;
static int hf_ipv6_routing_rpl_addr = -1;
static int hf_ipv6_routing_rpl_fulladdr = -1;
static int hf_ipv6_routing_srh_last_entry = -1;
static int hf_ipv6_routing_srh_flags = -1;
static int hf_ipv6_routing_srh_tag = -1;
static int hf_ipv6_routing_srh_addr = -1;
static int hf_ipv6_routing_crh16_current_sid = -1;
static int hf_ipv6_routing_crh32_current_sid = -1;
static int hf_ipv6_routing_crh16_segment_id = -1;
static int hf_ipv6_routing_crh32_segment_id = -1;
struct ipv6_addr_info_s {
int *hf_addr;
int *hf_addr_space;
int *hf_multicast_flags;
int *const *hf_multicast_flags_bits;
int *hf_multicast_scope;
int *hf_special_purpose;
int *hf_host;
};
static int *const ipv6_src_multicast_flags_bits[5] = {
&hf_ipv6_src_multicast_flags_reserved,
&hf_ipv6_src_multicast_flags_embed_rp,
&hf_ipv6_src_multicast_flags_network_prefix,
&hf_ipv6_src_multicast_flags_transient,
NULL
};
static struct ipv6_addr_info_s ipv6_src_info = {
&hf_ipv6_src,
&hf_ipv6_src_addr_space,
&hf_ipv6_src_multicast_flags,
ipv6_src_multicast_flags_bits,
&hf_ipv6_src_multicast_scope,
&hf_ipv6_src_special_purpose,
&hf_ipv6_src_host,
};
static int *const ipv6_dst_multicast_flags_bits[5] = {
&hf_ipv6_dst_multicast_flags_reserved,
&hf_ipv6_dst_multicast_flags_embed_rp,
&hf_ipv6_dst_multicast_flags_network_prefix,
&hf_ipv6_dst_multicast_flags_transient,
NULL
};
static struct ipv6_addr_info_s ipv6_dst_info = {
&hf_ipv6_dst,
&hf_ipv6_dst_addr_space,
&hf_ipv6_dst_multicast_flags,
ipv6_dst_multicast_flags_bits,
&hf_ipv6_dst_multicast_scope,
&hf_ipv6_dst_special_purpose,
&hf_ipv6_dst_host,
};
static int hf_geoip_country = -1;
static int hf_geoip_country_iso = -1;
static int hf_geoip_city = -1;
static int hf_geoip_as_number = -1;
static int hf_geoip_as_org = -1;
static int hf_geoip_latitude = -1;
static int hf_geoip_longitude = -1;
static int hf_geoip_src_summary = -1;
static int hf_geoip_src_country = -1;
static int hf_geoip_src_country_iso = -1;
static int hf_geoip_src_city = -1;
static int hf_geoip_src_as_number = -1;
static int hf_geoip_src_as_org = -1;
static int hf_geoip_src_latitude = -1;
static int hf_geoip_src_longitude = -1;
static int hf_geoip_dst_summary = -1;
static int hf_geoip_dst_country = -1;
static int hf_geoip_dst_country_iso = -1;
static int hf_geoip_dst_city = -1;
static int hf_geoip_dst_as_number = -1;
static int hf_geoip_dst_as_org = -1;
static int hf_geoip_dst_latitude = -1;
static int hf_geoip_dst_longitude = -1;
static gint ett_ipv6_proto = -1;
static gint ett_ipv6_detail = -1;
static gint ett_ipv6_multicast_flags = -1;
static gint ett_ipv6_traffic_class = -1;
static gint ett_ipv6_opt = -1;
static gint ett_ipv6_opt_type = -1;
static gint ett_ipv6_opt_rpl = -1;
static gint ett_ipv6_opt_mpl = -1;
static gint ett_ipv6_opt_dff_flags = -1;
static gint ett_ipv6_opt_ioam_trace_flags = -1;
static gint ett_ipv6_opt_ioam_trace_types = -1;
static gint ett_ipv6_hopopts_proto = -1;
static gint ett_ipv6_fraghdr_proto = -1;
static gint ett_ipv6_routing_proto = -1;
static gint ett_ipv6_routing_srh_vect = -1;
static gint ett_ipv6_fragments = -1;
static gint ett_ipv6_fragment = -1;
static gint ett_ipv6_dstopts_proto = -1;
static gint ett_geoip_info = -1;
static expert_field ei_ipv6_routing_invalid_length = EI_INIT;
static expert_field ei_ipv6_routing_invalid_segleft = EI_INIT;
static expert_field ei_ipv6_routing_undecoded = EI_INIT;
static expert_field ei_ipv6_dst_addr_not_unspecified = EI_INIT;
static expert_field ei_ipv6_src_addr_not_multicast = EI_INIT;
static expert_field ei_ipv6_dst_addr_not_multicast = EI_INIT;
static expert_field ei_ipv6_src_route_list_mult_inst_same_addr = EI_INIT;
static expert_field ei_ipv6_src_route_list_src_addr = EI_INIT;
static expert_field ei_ipv6_src_route_list_dst_addr = EI_INIT;
static expert_field ei_ipv6_src_route_list_multicast_addr = EI_INIT;
static expert_field ei_ipv6_routing_rpl_cmpri_cmpre_pad = EI_INIT;
static expert_field ei_ipv6_routing_rpl_addr_count_ge0 = EI_INIT;
static expert_field ei_ipv6_routing_rpl_reserved = EI_INIT;
static expert_field ei_ipv6_routing_deprecated = EI_INIT;
static expert_field ei_ipv6_opt_jumbo_missing = EI_INIT;
static expert_field ei_ipv6_opt_jumbo_prohibited = EI_INIT;
static expert_field ei_ipv6_opt_jumbo_truncated = EI_INIT;
static expert_field ei_ipv6_opt_jumbo_fragment = EI_INIT;
static expert_field ei_ipv6_opt_invalid_len = EI_INIT;
static expert_field ei_ipv6_opt_apn_invalid_id_type = EI_INIT;
static expert_field ei_ipv6_opt_unknown_data = EI_INIT;
static expert_field ei_ipv6_opt_deprecated = EI_INIT;
static expert_field ei_ipv6_opt_mpl_ipv6_src_seed_id = EI_INIT;
static expert_field ei_ipv6_hopopts_not_first = EI_INIT;
static expert_field ei_ipv6_plen_exceeds_framing = EI_INIT;
static expert_field ei_ipv6_plen_zero = EI_INIT;
static expert_field ei_ipv6_bogus_ipv6_version = EI_INIT;
static expert_field ei_ipv6_invalid_header = EI_INIT;
static expert_field ei_ipv6_opt_header_mismatch = EI_INIT;
static expert_field ei_ipv6_opt_ioam_invalid_nodelen = EI_INIT;
static expert_field ei_ipv6_opt_ioam_invalid_remlen = EI_INIT;
static expert_field ei_ipv6_opt_ioam_invalid_trace_type = EI_INIT;
static expert_field ei_ipv6_embed_ipv4_u_value = EI_INIT;
static dissector_handle_t ipv6_handle;
#define set_address_ipv6(dst, src_ip6) \
set_address((dst), AT_IPv6, IPv6_ADDR_SIZE, (src_ip6))
#define set_address_ipv6_tvb(dst, tvb, offset) \
set_address_tvb((dst), AT_IPv6, IPv6_ADDR_SIZE, (tvb), (offset))
#define alloc_address_wmem_ipv6(scope, dst, src_ip6) \
alloc_address_wmem((scope), (dst), AT_IPv6, IPv6_ADDR_SIZE, (src_ip6))
#define alloc_address_tvb_ipv6(scope, dst, tvb, offset) \
alloc_address_tvb((scope), (dst), AT_IPv6, IPv6_ADDR_SIZE, (tvb), (offset))
extern const ws_in6_addr *tvb_get_ptr_ipv6(tvbuff_t tvb, int offset);
#define tvb_get_ptr_ipv6(tvb, offset) \
((const ws_in6_addr *)tvb_get_ptr(tvb, offset, IPv6_ADDR_SIZE))
ipv6_pinfo_t *p_get_ipv6_pinfo(packet_info *pinfo)
{
return (ipv6_pinfo_t *)p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, IPV6_PROTO_PINFO);
}
/* Return tree pointer (for tree root preference) */
proto_tree *p_ipv6_pinfo_select_root(packet_info *pinfo, proto_tree *tree)
{
ipv6_pinfo_t *p;
if ((p = p_get_ipv6_pinfo(pinfo)) != NULL && p->ipv6_tree != NULL)
return p->ipv6_tree;
return tree;
}
ipv6_pinfo_t *p_ipv6_pinfo_add_len(packet_info *pinfo, int exthdr_len)
{
ipv6_pinfo_t *p;
if ((p = p_get_ipv6_pinfo(pinfo)) == NULL)
return NULL;
p->frag_plen -= exthdr_len;
p->ipv6_item_len += exthdr_len;
return p;
}
static void p_add_ipv6_nxt(packet_info *pinfo, guint8 nxt)
{
guint8 *ptr;
ptr = (guint8 *)wmem_memdup(pinfo->pool, &nxt, sizeof(guint8));
p_add_proto_data(pinfo->pool, pinfo, proto_ipv6,
(pinfo->curr_layer_num<<8) | IPV6_PROTO_VALUE, ptr);
}
static guint8 *p_get_ipv6_nxt(packet_info *pinfo)
{
return (guint8 *)p_get_proto_data(pinfo->pool, pinfo, proto_ipv6,
(pinfo->curr_layer_num<<8) | IPV6_PROTO_VALUE);
}
static gpointer ipv6_value(packet_info *pinfo)
{
guint8 *nxt = p_get_ipv6_nxt(pinfo);
if (nxt == NULL) {
return GUINT_TO_POINTER(255); /* Reserved IP Protocol */
}
return GUINT_TO_POINTER((guint)*nxt);
}
static void ipv6_prompt(packet_info *pinfo, gchar *result)
{
gpointer value = ipv6_value(pinfo);
snprintf(result, MAX_DECODE_AS_PROMPT_LEN, "IP protocol %u as", GPOINTER_TO_UINT(value));
}
static const char* ipv6_conv_get_filter_type(conv_item_t* conv, conv_filter_type_e filter)
{
if ((filter == CONV_FT_SRC_ADDRESS) && (conv->src_address.type == AT_IPv6))
return "ipv6.src";
if ((filter == CONV_FT_DST_ADDRESS) && (conv->dst_address.type == AT_IPv6))
return "ipv6.dst";
if ((filter == CONV_FT_ANY_ADDRESS) && (conv->src_address.type == AT_IPv6))
return "ipv6.addr";
return CONV_FILTER_INVALID;
}
static ct_dissector_info_t ipv6_ct_dissector_info = {&ipv6_conv_get_filter_type};
static tap_packet_status
ipv6_conversation_packet(void *pct, packet_info *pinfo, epan_dissect_t *edt _U_, const void *vip, tap_flags_t flags)
{
conv_hash_t *hash = (conv_hash_t*) pct;
hash->flags = flags;
const ipv6_tap_info_t *ip6 = (const ipv6_tap_info_t *)vip;
add_conversation_table_data(hash, &ip6->ip6_src, &ip6->ip6_dst, 0, 0, 1,
pinfo->fd->pkt_len, &pinfo->rel_ts, &pinfo->abs_ts,
&ipv6_ct_dissector_info, CONVERSATION_NONE);
return TAP_PACKET_REDRAW;
}
static const char* ipv6_endpoint_get_filter_type(endpoint_item_t* endpoint, conv_filter_type_e filter)
{
if ((filter == CONV_FT_ANY_ADDRESS) && (endpoint->myaddress.type == AT_IPv6))
return "ipv6.addr";
return CONV_FILTER_INVALID;
}
static et_dissector_info_t ipv6_endpoint_dissector_info = {&ipv6_endpoint_get_filter_type};
static tap_packet_status
ipv6_endpoint_packet(void *pit, packet_info *pinfo, epan_dissect_t *edt _U_, const void *vip, tap_flags_t flags)
{
conv_hash_t *hash = (conv_hash_t*) pit;
hash->flags = flags;
const ipv6_tap_info_t *ip6 = (const ipv6_tap_info_t *)vip;
add_endpoint_table_data(hash, &ip6->ip6_src, 0, TRUE, 1,
pinfo->fd->pkt_len, &ipv6_endpoint_dissector_info, ENDPOINT_NONE);
add_endpoint_table_data(hash, &ip6->ip6_dst, 0, FALSE, 1,
pinfo->fd->pkt_len, &ipv6_endpoint_dissector_info, ENDPOINT_NONE);
return TAP_PACKET_REDRAW;
}
static gboolean
ipv6_filter_valid(packet_info *pinfo)
{
return proto_is_frame_protocol(pinfo->layers, "ipv6");
}
static gchar*
ipv6_build_filter(packet_info *pinfo)
{
return ws_strdup_printf("ipv6.addr eq %s and ipv6.addr eq %s",
address_to_str(pinfo->pool, &pinfo->net_src),
address_to_str(pinfo->pool, &pinfo->net_dst));
}
/* UAT for providing a list of NAT64 prefixes */
struct nat64_prefix_data {
char *ipaddr;
uint8_t prefix_len;
uint32_t prefix_wildcard_len;
};
static uat_t *nat64_prefix_uat = NULL;
static struct nat64_prefix_data *nat64_prefix_uats = NULL;
static guint number_of_nat64_prefix = 0;
UAT_CSTRING_CB_DEF(nat64_prefix_uats, ipaddr, struct nat64_prefix_data)
static gboolean
nat64_prefix_uat_fld_ip_chk_cb(void *r _U_, const char *ipaddr, guint len _U_, const void *u1 _U_, const void *u2 _U_, char **err)
{
/* Check for a valid IPv6 address */
ws_in6_addr addr;
if (ws_inet_pton6(ipaddr, &addr)) {
*err = NULL;
return TRUE;
}
*err = ws_strdup_printf("No valid IPv6 address given.");
return FALSE;
}
static const value_string nat64_prefix_length_vals[] =
{
{ 32, "32" },
{ 40, "40" },
{ 48, "48" },
{ 56, "56" },
{ 64, "64" },
{ 96, "96" },
{ 0, NULL }
};
UAT_VS_DEF(nat64_prefix_uats, prefix_len, struct nat64_prefix_data, uint8_t, 96, "96")
static const value_string nat64_prefix_wildcard_length_vals[] =
{
{ 0, "0" },
{ 8, "8" },
{ 16, "16" },
{ 32, "32" },
{ 64, "64" },
{ 0, NULL }
};
UAT_VS_DEF(nat64_prefix_uats, prefix_wildcard_len, struct nat64_prefix_data, uint8_t, 0, "0")
static void
nat64_prefix_free_cb(void *data)
{
struct nat64_prefix_data *h = (struct nat64_prefix_data *)data;
g_free(h->ipaddr);
}
static void *
nat64_prefix_copy_cb(void *dst_, const void *src_, size_t len _U_)
{
const struct nat64_prefix_data *src = (const struct nat64_prefix_data *)src_;
struct nat64_prefix_data *dst = (struct nat64_prefix_data *)dst_;
dst->ipaddr = g_strdup(src->ipaddr);
dst->prefix_len = src->prefix_len;
dst->prefix_wildcard_len = src->prefix_wildcard_len;
return dst;
}
static gint
ipv6_previous_layer_id(packet_info *pinfo)
{
wmem_list_frame_t *layer;
layer = wmem_list_tail(pinfo->layers);
DISSECTOR_ASSERT(layer);
layer = wmem_list_frame_prev(layer);
if (layer != NULL) {
return GPOINTER_TO_INT(wmem_list_frame_data(layer));
}
return -1;
}
static const fragment_items ipv6_frag_items = {
&ett_ipv6_fragment,
&ett_ipv6_fragments,
&hf_ipv6_fragments,
&hf_ipv6_fragment,
&hf_ipv6_fragment_overlap,
&hf_ipv6_fragment_overlap_conflict,
&hf_ipv6_fragment_multiple_tails,
&hf_ipv6_fragment_too_long_fragment,
&hf_ipv6_fragment_error,
&hf_ipv6_fragment_count,
&hf_ipv6_reassembled_in,
&hf_ipv6_reassembled_length,
&hf_ipv6_reassembled_data,
"IPv6 fragments"
};
static dissector_table_t ip_dissector_table;
static dissector_table_t ipv6_routing_dissector_table;
/* Reassemble fragmented datagrams */
static gboolean ipv6_reassemble = TRUE;
/* Place IPv6 summary in proto tree */
static gboolean ipv6_summary_in_tree = TRUE;
/* Show expanded information about IPv6 address */
static gboolean ipv6_address_detail = FALSE;
/* Look up addresses via mmdbresolve */
static gboolean ipv6_use_geoip = TRUE;
/* Perform strict RFC adherence checking */
static gboolean g_ipv6_rpl_srh_strict_rfc_checking = FALSE;
/* Use heuristics to determine subdissector */
static gboolean try_heuristic_first = FALSE;
/* Display IPv6 extension headers under the root tree */
static gboolean ipv6_exthdr_under_root = FALSE;
/* Hide extension header generated field for length */
static gboolean ipv6_exthdr_hide_len_oct_field = FALSE;
/* Assume TSO and correct zero-length IP packets */
static gboolean ipv6_tso_supported = FALSE;
/*
* defragmentation of IPv6
*/
static reassembly_table ipv6_reassembly_table;
/* http://www.iana.org/assignments/ipv6-parameters (last updated 2015-07-07) */
static const value_string ipv6_opt_type_vals[] = {
{ IP6OPT_PAD1, "Pad1" },
{ IP6OPT_PADN, "PadN" },
{ IP6OPT_TEL, "Tunnel Encapsulation Limit" },
{ IP6OPT_RTALERT, "Router Alert" },
{ IP6OPT_CALIPSO, "CALIPSO" },
{ IP6OPT_SMF_DPD, "SMF_DPD" },
{ IP6OPT_PDM, "Performance and Diagnostic Metrics" },
{ IP6OPT_APN6, "Application-Aware IPv6 Networking (APN6)" },
{ IP6OPT_EXP_1E, "Experimental (0x1E)" },
{ IP6OPT_QUICKSTART, "Quick-Start" },
{ IP6OPT_PMTU, "Path MTU Option" },
{ IP6OPT_IOAM, "IOAM Option" },
{ IP6OPT_EXP_3E, "Experimental (0x3E)" },
{ IP6OPT_TPF, "Tunnel Payload Forwarding (TPF) Information" },
{ IP6OPT_EXP_5E, "Experimental (0x5E)" },
{ IP6OPT_RPL, "RPL Option" },
{ IP6OPT_MPL, "MPL Option" },
{ IP6OPT_EXP_7E, "Experimental (0x7E)" },
{ IP6OPT_ENDI, "Endpoint Identification" },
{ IP6OPT_ILNP_NONCE, "ILNP Nonce" },
{ IP6OPT_LIO, "Line-Identification Option" },
{ IP6OPT_EXP_9E, "Experimental (0x9E)" },
{ IP6OPT_EXP_BE, "Experimental (0xBE)" },
{ IP6OPT_JUMBO, "Jumbo Payload" },
{ IP6OPT_HOME_ADDRESS, "Home Address" },
{ IP6OPT_EXP_DE, "Experimental (0xDE)" },
{ IP6OPT_IP_DFF, "IP_DFF" },
{ IP6OPT_EXP_FE, "Experimental (0xFE)" },
{ 0, NULL }
};
static value_string_ext ipv6_opt_type_vals_ext = VALUE_STRING_EXT_INIT(ipv6_opt_type_vals);
static const value_string ipv6_opt_rtalert_vals[] = {
{ IP6OPT_RTALERT_MLD, "MLD" },
{ IP6OPT_RTALERT_RSVP, "RSVP" },
{ IP6OPT_RTALERT_ACTNET, "Active Network" },
{ 0, NULL }
};
enum {
IP6OPT_SMF_DPD_NULL = 0,
IP6OPT_SMF_DPD_DFLT,
IP6OPT_SMF_DPD_IPv4,
IP6OPT_SMF_DPD_IPv6
};
static const value_string ipv6_opt_smf_dpd_tidty_vals[] = {
{ IP6OPT_SMF_DPD_NULL, "NULL" },
{ IP6OPT_SMF_DPD_DFLT, "DEFAULT" },
{ IP6OPT_SMF_DPD_IPv4, "IPv4" },
{ IP6OPT_SMF_DPD_IPv6, "IPv6" },
{ 0, NULL }
};
enum {
IPv6_OPT_ACTION_SKIP = 0,
IPv6_OPT_ACTION_DISC,
IPv6_OPT_ACTION_ICMP,
IPv6_OPT_ACTION_MCST,
};
static const value_string ipv6_opt_type_action_vals[] = {
{ IPv6_OPT_ACTION_SKIP, "Skip and continue" },
{ IPv6_OPT_ACTION_DISC, "Discard" },
{ IPv6_OPT_ACTION_ICMP, "Discard and send ICMP Parameter Problem" },
{ IPv6_OPT_ACTION_MCST, "Discard and send ICMP if not multicast" },
{ 0, NULL }
};
enum {
IPv6_OPT_HDR_HBH = 0,
IPv6_OPT_HDR_DST,
IPv6_OPT_HDR_ANY
};
static const gint _ipv6_opt_type_hdr[][2] = {
{ IP6OPT_TEL, IPv6_OPT_HDR_DST },
{ IP6OPT_RTALERT, IPv6_OPT_HDR_HBH },
{ IP6OPT_PMTU, IPv6_OPT_HDR_HBH },
{ IP6OPT_APN6, IPv6_OPT_HDR_ANY },
{ IP6OPT_CALIPSO, IPv6_OPT_HDR_HBH },
{ IP6OPT_SMF_DPD, IPv6_OPT_HDR_HBH },
{ IP6OPT_PDM, IPv6_OPT_HDR_DST },
{ IP6OPT_QUICKSTART, IPv6_OPT_HDR_HBH },
{ IP6OPT_IOAM, IPv6_OPT_HDR_HBH },
{ IP6OPT_TPF, IPv6_OPT_HDR_DST },
{ IP6OPT_RPL, IPv6_OPT_HDR_HBH },
{ IP6OPT_MPL, IPv6_OPT_HDR_HBH },
{ IP6OPT_ILNP_NONCE, IPv6_OPT_HDR_DST },
{ IP6OPT_LIO, IPv6_OPT_HDR_DST },
{ IP6OPT_JUMBO, IPv6_OPT_HDR_HBH },
{ IP6OPT_HOME_ADDRESS, IPv6_OPT_HDR_DST },
{ IP6OPT_IP_DFF, IPv6_OPT_HDR_HBH },
{ 0, IPv6_OPT_HDR_ANY }
};
static inline gint
ipv6_opt_type_hdr(gint type)
{
const gint (*p)[2] = _ipv6_opt_type_hdr;
for (; (*p)[1] != IPv6_OPT_HDR_ANY; p++) {
if ((*p)[0] == type) {
return (*p)[1];
}
}
return IPv6_OPT_HDR_ANY;
}
enum {
IPv6_RT_HEADER_SOURCE_ROUTING = 0, /* DEPRECATED */
IPv6_RT_HEADER_NIMROD = 1, /* DEPRECATED */
IPv6_RT_HEADER_MOBILE_IP = 2,
IPv6_RT_HEADER_RPL = 3,
IPv6_RT_HEADER_SEGMENT_ROUTING = 4,
IPv6_RT_HEADER_COMPACT_16 = 5,
IPv6_RT_HEADER_COMPACT_32 = 6,
IPv6_RT_HEADER_EXP1 = 253,
IPv6_RT_HEADER_EXP2 = 254
};
/* Routing Header Types */
static const value_string routing_header_type[] = {
{ IPv6_RT_HEADER_SOURCE_ROUTING, "Source Route" },
{ IPv6_RT_HEADER_NIMROD, "Nimrod" },
{ IPv6_RT_HEADER_MOBILE_IP, "Type 2 Routing" },
{ IPv6_RT_HEADER_RPL, "RPL Source Route" },
{ IPv6_RT_HEADER_SEGMENT_ROUTING, "Segment Routing" },
{ IPv6_RT_HEADER_COMPACT_16, "Compact Routing Header 16" },
{ IPv6_RT_HEADER_COMPACT_32, "Compact Routing Header 32" },
{ IPv6_RT_HEADER_EXP1, "Experiment 1" },
{ IPv6_RT_HEADER_EXP2, "Experiment 2" },
{ 0, NULL }
};
static const value_string mpl_seed_id_len_vals[] = {
{ 0, "0" },
{ 1, "16-bit unsigned integer" },
{ 2, "64-bit unsigned integer" },
{ 3, "128-bit unsigned integer" },
{ 0, NULL }
};
static const value_string ipv6_multicast_scope_vals[] = {
{ 0x0, "Reserved" },
{ 0x1, "Interface-Local scope" },
{ 0x2, "Link-Local scope" },
{ 0x3, "Realm-Local scope" },
{ 0x4, "Admin-Local scope" },
{ 0x5, "Site-Local scope" },
{ 0x6, "Unassigned" },
{ 0x7, "Unassigned" },
{ 0x8, "Organization-Local scope" },
{ 0x9, "Unassigned" },
{ 0xA, "Unassigned" },
{ 0xB, "Unassigned" },
{ 0xC, "Unassigned" },
{ 0xD, "Unassigned" },
{ 0xE, "Global scope" },
{ 0xF, "Reserved" },
{ 0, NULL }
};
#define APN_ID_32BIT 1
#define APN_ID_64BIT 2
#define APN_ID_128BIT 3
static const value_string apn_id_type_strs[] = {
{ 0, "Invalid" },
{ APN_ID_32BIT, "32-bit" },
{ APN_ID_64BIT, "64-bit" },
{ APN_ID_128BIT, "128-bit" },
{ 0, NULL }
};
static gboolean
capture_ipv6(const guchar *pd, int offset, int len, capture_packet_info_t *cpinfo, const union wtap_pseudo_header *pseudo_header)
{
guint8 nxt;
if (!BYTES_ARE_IN_FRAME(offset, len, IPv6_HDR_SIZE))
return FALSE;
capture_dissector_increment_count(cpinfo, proto_ipv6);
nxt = pd[offset+6]; /* get the "next header" value */
offset += IPv6_HDR_SIZE; /* skip past the IPv6 header */
return try_capture_dissector("ip.proto", nxt, pd, offset, len, cpinfo, pseudo_header);
}
static gboolean
capture_ipv6_exthdr(const guchar *pd, int offset, int len, capture_packet_info_t *cpinfo, const union wtap_pseudo_header *pseudo_header)
{
guint8 nxt;
int advance;
if (!BYTES_ARE_IN_FRAME(offset, len, 2))
return FALSE;
nxt = pd[offset];
switch (nxt) {
case IP_PROTO_FRAGMENT:
advance = IPv6_FRAGMENT_HDR_SIZE;
break;
default:
advance = (pd[offset+1] + 1) << 3;
break;
}
if (!BYTES_ARE_IN_FRAME(offset, len, advance))
return FALSE;
offset += advance;
return try_capture_dissector("ip.proto", nxt, pd, offset, len, cpinfo, pseudo_header);
}
static void
add_geoip_info_entry(proto_tree *tree, packet_info *pinfo, tvbuff_t *tvb, gint offset, const ws_in6_addr *ip6, int isdst)
{
const mmdb_lookup_t *lookup = maxmind_db_lookup_ipv6(ip6);
if (!lookup->found) return;
wmem_strbuf_t *summary = wmem_strbuf_new(pinfo->pool, "");
if (lookup->city) {
wmem_strbuf_append(summary, lookup->city);
}
if (lookup->country_iso) {
if (wmem_strbuf_get_len(summary) > 0) wmem_strbuf_append(summary, ", ");
wmem_strbuf_append(summary, lookup->country_iso);
} else if (lookup->country) {
if (wmem_strbuf_get_len(summary) > 0) wmem_strbuf_append(summary, ", ");
wmem_strbuf_append(summary, lookup->country);
}
if (lookup->as_number > 0) {
if (wmem_strbuf_get_len(summary) > 0) wmem_strbuf_append(summary, ", ");
wmem_strbuf_append_printf(summary, "ASN %u", lookup->as_number);
}
if (lookup->as_org) {
if (wmem_strbuf_get_len(summary) > 0) wmem_strbuf_append(summary, ", ");
wmem_strbuf_append(summary, lookup->as_org);
}
int addr_offset = offset + isdst ? IP6H_DST : IP6H_SRC;
int dir_hf = isdst ? hf_geoip_dst_summary : hf_geoip_src_summary;
proto_item *geoip_info_item = proto_tree_add_string(tree, dir_hf, tvb, addr_offset, 16, wmem_strbuf_finalize(summary));
proto_item_set_generated(geoip_info_item);
proto_tree *geoip_info_tree = proto_item_add_subtree(geoip_info_item, ett_geoip_info);
proto_item *item;
if (lookup->city) {
dir_hf = isdst ? hf_geoip_dst_city : hf_geoip_src_city;
item = proto_tree_add_string(geoip_info_tree, dir_hf, tvb, addr_offset, 16, lookup->city);
proto_item_set_generated(item);
item = proto_tree_add_string(geoip_info_tree, hf_geoip_city, tvb, addr_offset, 16, lookup->city);
proto_item_set_generated(item);
}
if (lookup->country) {
dir_hf = isdst ? hf_geoip_dst_country : hf_geoip_src_country;
item = proto_tree_add_string(geoip_info_tree, dir_hf, tvb, addr_offset, 16, lookup->country);
proto_item_set_generated(item);
item = proto_tree_add_string(geoip_info_tree, hf_geoip_country, tvb, addr_offset, 16, lookup->country);
proto_item_set_generated(item);
}
if (lookup->country_iso) {
dir_hf = isdst ? hf_geoip_dst_country_iso : hf_geoip_src_country_iso;
item = proto_tree_add_string(geoip_info_tree, dir_hf, tvb, addr_offset, 16, lookup->country_iso);
proto_item_set_generated(item);
item = proto_tree_add_string(geoip_info_tree, hf_geoip_country_iso, tvb, addr_offset, 16, lookup->country_iso);
proto_item_set_generated(item);
}
if (lookup->as_number > 0) {
dir_hf = isdst ? hf_geoip_dst_as_number : hf_geoip_src_as_number;
item = proto_tree_add_uint(geoip_info_tree, dir_hf, tvb, addr_offset, 16, lookup->as_number);
proto_item_set_generated(item);
item = proto_tree_add_uint(geoip_info_tree, hf_geoip_as_number, tvb, addr_offset, 16, lookup->as_number);
proto_item_set_generated(item);
}
if (lookup->as_org) {
dir_hf = isdst ? hf_geoip_dst_as_org : hf_geoip_src_as_org;
item = proto_tree_add_string(geoip_info_tree, dir_hf, tvb, addr_offset, 16, lookup->as_org);
proto_item_set_generated(item);
item = proto_tree_add_string(geoip_info_tree, hf_geoip_as_org, tvb, addr_offset, 16, lookup->as_org);
proto_item_set_generated(item);
}
if (lookup->latitude >= -90.0 && lookup->latitude <= 90.0) {
dir_hf = isdst ? hf_geoip_dst_latitude : hf_geoip_src_latitude;
item = proto_tree_add_double(geoip_info_tree, dir_hf, tvb, addr_offset, 16, lookup->latitude);
proto_item_set_generated(item);
item = proto_tree_add_double(geoip_info_tree, hf_geoip_latitude, tvb, addr_offset, 16, lookup->latitude);
proto_item_set_generated(item);
}
if (lookup->longitude >= -180.0 && lookup->longitude <= 180.0) {
dir_hf = isdst ? hf_geoip_dst_longitude : hf_geoip_src_longitude;
item = proto_tree_add_double(geoip_info_tree, dir_hf, tvb, addr_offset, 16, lookup->longitude);
proto_item_set_generated(item);
item = proto_tree_add_double(geoip_info_tree, hf_geoip_longitude, tvb, addr_offset, 16, lookup->longitude);
proto_item_set_generated(item);
}
}
static void
add_geoip_info(proto_tree *tree, packet_info *pinfo, tvbuff_t *tvb, gint offset, const ws_in6_addr *src, const ws_in6_addr *dst)
{
add_geoip_info_entry(tree, pinfo, tvb, offset, src, FALSE);
add_geoip_info_entry(tree, pinfo, tvb, offset, dst, TRUE);
}
/* Returns TRUE if reassembled */
static gboolean
ipv6_reassemble_do(tvbuff_t **tvb_ptr, gint *offset_ptr, packet_info *pinfo, proto_tree *ipv6_tree,
guint32 plen, guint16 frag_off, gboolean frag_flg, guint32 frag_ident,
gboolean *show_data_ptr)
{
fragment_head *ipfd_head;
tvbuff_t *next_tvb;
gboolean update_col_info = TRUE;
pinfo->fragmented = TRUE;
*show_data_ptr = TRUE;
if (!ipv6_reassemble) {
/* not reassembling */
if (frag_off == 0) {
/* first fragment */
*show_data_ptr = FALSE;
}
return FALSE;
}
/* reassembling */
if (tvb_bytes_exist(*tvb_ptr, *offset_ptr, plen)) {
ipfd_head = fragment_add_check(&ipv6_reassembly_table,
*tvb_ptr, *offset_ptr, pinfo, frag_ident, NULL,
frag_off, plen, frag_flg);
next_tvb = process_reassembled_data(*tvb_ptr, *offset_ptr, pinfo, "Reassembled IPv6",
ipfd_head, &ipv6_frag_items, &update_col_info, ipv6_tree);
if (next_tvb) {
/* Process post-fragment headers after reassembly */
*offset_ptr = 0;
*tvb_ptr = next_tvb;
pinfo->fragmented = FALSE;
*show_data_ptr = FALSE;
return TRUE;
}
}
return FALSE;
}
static proto_item *
_proto_tree_add_ipv6_vector_address(proto_tree *tree, packet_info *pinfo, int hfindex, tvbuff_t *tvb, gint start,
gint length, const ws_in6_addr *value_ptr, int idx)
{
address addr;
gchar *str;
set_address_ipv6(&addr, value_ptr);
str = address_with_resolution_to_str(pinfo->pool, &addr);
return proto_tree_add_ipv6_format(tree, hfindex, tvb, start, length,
value_ptr, "Address[%d]: %s", idx, str);
}
/* IPv6 Source Routing Header (Type 0) */
static int
dissect_routing6_rt0(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
struct ws_rthdr *rt = (struct ws_rthdr *)data;
proto_item *ti;
int offset = 0;
gint idx;
gint rt0_addr_count;
const ws_in6_addr *addr = NULL;
proto_tree_add_item(tree, hf_ipv6_routing_src_reserved, tvb, offset, 4, ENC_NA);
offset += 4;
if (rt->hdr.ip6r_len % 2 != 0) {
expert_add_info_format(pinfo, rt->ti_len, &ei_ipv6_routing_invalid_length,
"IPv6 Routing Header extension header length must not be odd");
}
rt0_addr_count = rt->hdr.ip6r_len / 2;
if (rt->hdr.ip6r_segleft > rt0_addr_count) {
expert_add_info_format(pinfo, rt->ti_segleft, &ei_ipv6_routing_invalid_segleft,
"IPv6 Type 0 Routing Header segments left field must not exceed address count (%u)", rt0_addr_count);
}
for (idx = 1; idx <= rt0_addr_count; idx++) {
addr = tvb_get_ptr_ipv6(tvb, offset);
ti = _proto_tree_add_ipv6_vector_address(tree, pinfo, hf_ipv6_routing_src_addr, tvb,
offset, IPv6_ADDR_SIZE, addr, idx);
offset += IPv6_ADDR_SIZE;
if (in6_addr_is_multicast(addr)) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_multicast_addr);
}
}
if (addr != NULL && pinfo->dst.type == AT_IPv6 && rt->hdr.ip6r_segleft > 0) {
alloc_address_wmem_ipv6(pinfo->pool, &pinfo->dst, addr);
}
expert_add_info(pinfo, rt->ti_type, &ei_ipv6_routing_deprecated);
return tvb_captured_length(tvb);
}
/* Mobile IPv6 Routing Header (Type 2) */
static int
dissect_routing6_mipv6(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
struct ws_rthdr *rt = (struct ws_rthdr *)data;
proto_item *ti;
int offset = 0;
const ws_in6_addr *addr;
proto_tree_add_item(tree, hf_ipv6_routing_mipv6_reserved, tvb, offset, 4, ENC_NA);
offset += 4;
if (rt->hdr.ip6r_len != 2) {
expert_add_info_format(pinfo, rt->ti_len, &ei_ipv6_routing_invalid_length,
"IPv6 Type 2 Routing Header extension header length must equal 2");
}
if (rt->hdr.ip6r_segleft != 1) {
expert_add_info_format(pinfo, rt->ti_segleft, &ei_ipv6_routing_invalid_segleft,
"IPv6 Type 2 Routing Header segments left field must equal 1");
}
addr = tvb_get_ptr_ipv6(tvb, offset);
ti = _proto_tree_add_ipv6_vector_address(tree, pinfo, hf_ipv6_routing_mipv6_home_address, tvb,
offset, IPv6_ADDR_SIZE, addr, 1);
if (in6_addr_is_multicast(addr)) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_multicast_addr);
}
if (pinfo->dst.type == AT_IPv6 && rt->hdr.ip6r_segleft > 0) {
alloc_address_wmem_ipv6(pinfo->pool, &pinfo->dst, addr);
}
return tvb_captured_length(tvb);
}
/* RPL Source Routing Header (Type 3) */
static int
dissect_routing6_rpl(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
struct ws_rthdr *rt = (struct ws_rthdr *)data;
proto_item *ti;
int offset = 0;
guint8 cmprI, cmprE, cmprX, pad;
guint32 reserved;
gint idx;
gint rpl_addr_count;
ws_in6_addr rpl_fulladdr;
const ws_in6_addr *ip6_dst_addr, *ip6_src_addr;
wmem_array_t *rpl_addr_vector = NULL;
guint i;
/* Must be IPv6 addresses */
if ((pinfo->dst.type != AT_IPv6) || (pinfo->src.type != AT_IPv6))
return 0;
/* IPv6 destination address used for elided bytes */
ip6_dst_addr = (const ws_in6_addr *)pinfo->dst.data;
/* IPv6 source address used for strict checking */
ip6_src_addr = (const ws_in6_addr *)pinfo->src.data;
/* from RFC6554: Multicast addresses MUST NOT appear in the IPv6 Destination Address field */
if (in6_addr_is_multicast(ip6_dst_addr)) {
expert_add_info(pinfo, proto_tree_get_parent(tree), &ei_ipv6_dst_addr_not_multicast);
}
proto_tree_add_item(tree, hf_ipv6_routing_rpl_cmprI, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tree, hf_ipv6_routing_rpl_cmprE, tvb, offset, 4, ENC_BIG_ENDIAN);
ti = proto_tree_add_item(tree, hf_ipv6_routing_rpl_pad, tvb, offset, 4, ENC_BIG_ENDIAN);
cmprI = tvb_get_guint8(tvb, offset) & 0xF0;
cmprE = tvb_get_guint8(tvb, offset) & 0x0F;
pad = tvb_get_guint8(tvb, offset + 1) & 0xF0;
/* Shift bytes over */
cmprI >>= 4;
pad >>= 4;
/* from RFC6554: when CmprI and CmprE are both 0, Pad MUST carry a value of 0 */
if (cmprI == 0 && cmprE == 0 && pad != 0) {
expert_add_info_format(pinfo, ti, &ei_ipv6_routing_rpl_cmpri_cmpre_pad, "When cmprI equals 0 and cmprE equals 0, pad MUST equal 0 but instead was %d", pad);
}
ti = proto_tree_add_item(tree, hf_ipv6_routing_rpl_reserved, tvb, offset, 4, ENC_BIG_ENDIAN);
reserved = tvb_get_bits32(tvb, ((offset + 1) * 8) + 4, 20, ENC_BIG_ENDIAN);
if (reserved != 0) {
expert_add_info_format(pinfo, ti, &ei_ipv6_routing_rpl_reserved, "Reserved field must equal 0 but instead was %d", reserved);
}
/* From RFC6554:
* n = (((Hdr Ext Len * 8) - Pad - (16 - CmprE)) / (16 - CmprI)) + 1
*/
rpl_addr_count = 0;
if (rt->hdr.ip6r_len > 0) {
rpl_addr_count = (((rt->hdr.ip6r_len * 8) - pad - (16 - cmprE)) / (16 - cmprI)) + 1;
}
ti = proto_tree_add_int(tree, hf_ipv6_routing_rpl_addr_count, tvb, offset, 2, rpl_addr_count);
proto_item_set_generated(ti);
if (rpl_addr_count < 0) {
/* This error should always be reported */
expert_add_info_format(pinfo, ti, &ei_ipv6_routing_rpl_addr_count_ge0, "Calculated total address count must be greater than or equal to 0, instead was %d", rpl_addr_count);
}
else if (rt->hdr.ip6r_segleft > (guint)rpl_addr_count) {
expert_add_info_format(pinfo, rt->ti_segleft, &ei_ipv6_routing_invalid_segleft,
"IPv6 RPL Routing Header segments left field must not exceed address count (%d)", rpl_addr_count);
}
if (rpl_addr_count > 0) {
offset += 4;
if (g_ipv6_rpl_srh_strict_rfc_checking)
rpl_addr_vector = wmem_array_sized_new(pinfo->pool, IPv6_ADDR_SIZE, rpl_addr_count);
/* We use cmprI for internal (e.g.: not last) address for how many bytes to elide, so actual bytes present = 16-CmprI */
for (idx = 1; idx <= rpl_addr_count; idx++) {
if (idx == rpl_addr_count)
cmprX = 16 - cmprE;
else
cmprX = 16 - cmprI;
proto_tree_add_item(tree, hf_ipv6_routing_rpl_addr, tvb, offset, cmprX, ENC_NA);
/* Display Full Address */
memcpy(&rpl_fulladdr, ip6_dst_addr, IPv6_ADDR_SIZE);
tvb_memcpy(tvb, &rpl_fulladdr.bytes[16-cmprX], offset, cmprX);
ti = _proto_tree_add_ipv6_vector_address(tree, pinfo, hf_ipv6_routing_rpl_fulladdr, tvb,
offset, cmprX, &rpl_fulladdr, idx);
proto_item_set_generated(ti);
offset += cmprX;
/* IPv6 Source and Destination addresses of the encapsulating datagram (MUST) not appear in the SRH*/
if (memcmp(&rpl_fulladdr, ip6_src_addr, IPv6_ADDR_SIZE) == 0) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_src_addr);
}
if (memcmp(&rpl_fulladdr, ip6_dst_addr, IPv6_ADDR_SIZE) == 0) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_dst_addr);
}
/* Multicast addresses MUST NOT appear in the in SRH */
if (in6_addr_is_multicast(&rpl_fulladdr)) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_multicast_addr);
}
if (g_ipv6_rpl_srh_strict_rfc_checking) {
/* from RFC6554: */
/* The SRH MUST NOT specify a path that visits a node more than once. */
/* To do this, we will just check the current 'addr' against the previous addresses */
for (i = 0; i < wmem_array_get_count(rpl_addr_vector); i++) {
/* Compare the addresses */
if (memcmp(&rpl_fulladdr, wmem_array_index(rpl_addr_vector, i), IPv6_ADDR_SIZE) == 0) {
/* Found a previous that is the same */
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_mult_inst_same_addr);
break;
}
}
wmem_array_append(rpl_addr_vector, &rpl_fulladdr, 1);
}
if (pinfo->dst.type == AT_IPv6 && rt->hdr.ip6r_segleft > 0) {
alloc_address_wmem_ipv6(pinfo->pool, &pinfo->dst, &rpl_fulladdr);
}
}
}
return tvb_captured_length(tvb);
}
/* Segment Routing Header (Type 4) */
static int
dissect_routing6_srh(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
struct ws_rthdr *rt = (struct ws_rthdr *)data;
int offset = 0;
gint addr_offset;
guint32 last_entry, addr_count;
proto_tree_add_item_ret_uint(tree, hf_ipv6_routing_srh_last_entry,
tvb, offset, 1, ENC_BIG_ENDIAN,
&last_entry);
addr_count = last_entry + 1;
offset += 1;
proto_tree_add_item(tree, hf_ipv6_routing_srh_flags, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(tree, hf_ipv6_routing_srh_tag, tvb, offset, 2, ENC_NA);
offset += 2;
if (rt->hdr.ip6r_segleft > addr_count) {
expert_add_info_format(pinfo, rt->ti_segleft, &ei_ipv6_routing_invalid_segleft,
"IPv6 Type 4 Routing Header segments left field must not exceed address count (%u)", addr_count);
}
if (pinfo->dst.type == AT_IPv6 && rt->hdr.ip6r_segleft > 0) {
alloc_address_wmem_ipv6(pinfo->pool, &pinfo->dst, tvb_get_ptr_ipv6(tvb, offset));
}
for (unsigned i = 0; i < addr_count; i++) {
addr_offset = offset + i * IPv6_ADDR_SIZE;
_proto_tree_add_ipv6_vector_address(tree, pinfo, hf_ipv6_routing_srh_addr, tvb,
addr_offset, IPv6_ADDR_SIZE, tvb_get_ptr_ipv6(tvb, addr_offset), i);
}
/* TODO: dissect TLVs */
return tvb_captured_length(tvb);
}
/* Compact Routing Header 16 (Type 5) and Compact Routing Header 32 (Type 6).
https://tools.ietf.org/html/draft-bonica-6man-comp-rtg-hdr-23. */
static int dissect_routing6_crh(tvbuff_t* tvb, packet_info* pinfo, proto_tree* tree, void* data)
{
int offset, minimum_crh_length;
gint sid;
unsigned sid_count;
unsigned octets_per_sid;
unsigned sids_beyond_first_word;
unsigned sids_per_word;
struct ws_rthdr* rt = (struct ws_rthdr*)data;
gboolean is_crh16 = rt->hdr.ip6r_type == IPv6_RT_HEADER_COMPACT_16;
guint8 segments_left = rt->hdr.ip6r_segleft;
/* Compute the minimum CRH length measured in 8-octet units, not including
the first 8 octets */
minimum_crh_length = -1;
switch (rt->hdr.ip6r_type) {
case IPv6_RT_HEADER_COMPACT_16:
octets_per_sid = 2;
sids_per_word = 4;
sid_count = rt->hdr.ip6r_len * 4 + 2;
if (segments_left <= 2)
minimum_crh_length = 0;
sids_beyond_first_word = segments_left - 2;
break;
case IPv6_RT_HEADER_COMPACT_32:
octets_per_sid = 4;
sids_per_word = 2;
sid_count = rt->hdr.ip6r_len * 2 + 1;
if (segments_left <= 1)
minimum_crh_length = 0;
sids_beyond_first_word = segments_left - 1;
break;
default:
DISSECTOR_ASSERT_NOT_REACHED();
}
if (minimum_crh_length) {
minimum_crh_length = sids_beyond_first_word / sids_per_word;
if (sids_beyond_first_word % sids_per_word)
minimum_crh_length++;
}
if (minimum_crh_length > rt->hdr.ip6r_len) {
expert_add_info_format(pinfo, rt->ti_len, &ei_ipv6_routing_invalid_length,
"IPv6 Compact Routing Header minimum length must not exceed header length (%u)",
rt->hdr.ip6r_len);
}
offset = 0;
if (is_crh16) {
proto_item* current_sid_item = proto_tree_add_item(tree, hf_ipv6_routing_crh16_current_sid,
tvb, offset + (octets_per_sid * segments_left), octets_per_sid, ENC_BIG_ENDIAN);
proto_item_set_generated(current_sid_item);
} else {
proto_item* current_sid_item = proto_tree_add_item(tree, hf_ipv6_routing_crh32_current_sid,
tvb, offset + (octets_per_sid * segments_left), octets_per_sid, ENC_BIG_ENDIAN);
proto_item_set_generated(current_sid_item);
}
sid = is_crh16 ? tvb_get_guint16(tvb, offset, ENC_BIG_ENDIAN)
: tvb_get_guint32(tvb, offset, ENC_BIG_ENDIAN);
proto_tree* segment_ids
= proto_tree_add_subtree(tree, tvb, 0, -1, 0, NULL, "Segment Identifiers");
for (unsigned i = 0; i < sid_count && sid; i++) {
if (is_crh16) {
proto_tree_add_uint_format(segment_ids, hf_ipv6_routing_crh16_segment_id, tvb, offset,
octets_per_sid, sid, "SID[%d] = %d", i, sid);
} else {
proto_tree_add_uint_format(segment_ids, hf_ipv6_routing_crh32_segment_id, tvb, offset,
octets_per_sid, sid, "SID[%d] = %d", i, sid);
}
offset += octets_per_sid;
sid = is_crh16 ? tvb_get_guint16(tvb, offset, ENC_BIG_ENDIAN)
: tvb_get_guint32(tvb, offset, ENC_BIG_ENDIAN);
}
return tvb_captured_length(tvb);
}
/*
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Next Header | Hdr Ext Len | Routing Type | Segments Left |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
. .
. type-specific data .
. .
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static int
dissect_routing6(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data) {
struct ws_rthdr rt;
guint nxt, hdr_len, total_len;
proto_tree *rt_tree, *root_tree;
proto_item *pi, *ti, *ti_hdr_len, *ti_type, *ti_segs;
int offset = 0;
tvbuff_t *next_tvb;
int type, type_len;
dissector_handle_t type_dissector;
col_append_sep_str(pinfo->cinfo, COL_INFO, " , ", "IPv6 routing");
root_tree = p_ipv6_pinfo_select_root(pinfo, tree);
pi = proto_tree_add_item(root_tree, proto_ipv6_routing, tvb, offset, -1, ENC_NA);
rt_tree = proto_item_add_subtree(pi, ett_ipv6_routing_proto);
proto_tree_add_item(rt_tree, hf_ipv6_routing_nxt, tvb, offset, 1, ENC_BIG_ENDIAN);
nxt = tvb_get_guint8(tvb, offset);
offset += 1;
ti_hdr_len = proto_tree_add_item(rt_tree, hf_ipv6_routing_len, tvb, offset, 1, ENC_BIG_ENDIAN);
hdr_len = tvb_get_guint8(tvb, offset);
/*
Hdr Ext Len 8-bit unsigned integer. Length of the Routing
header in 8-octet units, not including the
first 8 octets.
*/
total_len = (hdr_len + 1) * 8;
type_len = total_len - 4;
proto_item_set_len(pi, total_len);
ti = proto_tree_add_uint(rt_tree, hf_ipv6_routing_len_oct, tvb, offset, 1, total_len);
proto_item_set_generated(ti);
if (ipv6_exthdr_hide_len_oct_field) {
proto_item_set_hidden(ti);
proto_item_append_text(ti_hdr_len, " (%d bytes)", total_len);
}
p_ipv6_pinfo_add_len(pinfo, total_len);
offset += 1;
ti_type = proto_tree_add_item(rt_tree, hf_ipv6_routing_type, tvb, offset, 1, ENC_BIG_ENDIAN);
type = tvb_get_guint8(tvb, offset);
proto_item_append_text(pi, " (%s)", val_to_str(type, routing_header_type, "Unknown type %u"));
offset += 1;
ti_segs = proto_tree_add_item(rt_tree, hf_ipv6_routing_segleft, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
type_dissector = dissector_get_uint_handle(ipv6_routing_dissector_table, type);
if (type_dissector != NULL) {
tvb_memcpy(tvb, &(rt.hdr), 0, 4);
rt.ti_len = ti_hdr_len;
rt.ti_type = ti_type;
rt.ti_segleft = ti_segs;
call_dissector_with_data(type_dissector, tvb_new_subset_length(tvb, offset, type_len), pinfo, rt_tree, &rt);
}
else {
/* Unknown Routing Header Type */
ti = proto_tree_add_item(rt_tree, hf_ipv6_routing_unknown_data, tvb, offset, type_len, ENC_NA);
expert_add_info(pinfo, ti, &ei_ipv6_routing_undecoded);
}
p_add_ipv6_nxt(pinfo, nxt);
next_tvb = tvb_new_subset_remaining(tvb, total_len);
ipv6_dissect_next(nxt, next_tvb, pinfo, tree, (ws_ip6 *)data);
return tvb_captured_length(tvb);
}
static int
dissect_fraghdr(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data) {
proto_item *pi, *ti;
proto_tree *frag_tree, *root_tree;
guint8 nxt;
guint16 offlg;
guint16 frag_off;
gboolean frag_flg;
guint32 frag_ident;
gint offset = 0;
ipv6_pinfo_t *ipv6_pinfo;
gboolean show_data = FALSE;
gboolean reassembled;
tvbuff_t *next_tvb;
nxt = tvb_get_guint8(tvb, offset);
offlg = tvb_get_ntohs(tvb, offset + 2);
frag_off = offlg & IP6F_OFF_MASK; /* offset in bytes */
frag_flg = offlg & IP6F_MORE_FRAG;
frag_ident = tvb_get_ntohl(tvb, offset + 4);
col_add_fstr(pinfo->cinfo, COL_INFO, "IPv6 fragment (off=%u more=%s ident=0x%08x nxt=%u)",
frag_off, frag_flg ? "y" : "n", frag_ident, nxt);
root_tree = p_ipv6_pinfo_select_root(pinfo, tree);
ipv6_pinfo = p_ipv6_pinfo_add_len(pinfo, IPv6_FRAGMENT_HDR_SIZE);
/* IPv6 Fragmentation Header has fixed length of 8 bytes */
pi = proto_tree_add_item(root_tree, proto_ipv6_fraghdr, tvb, offset, IPv6_FRAGMENT_HDR_SIZE, ENC_NA);
if (ipv6_pinfo != NULL && ipv6_pinfo->jumbo_plen != 0) {
expert_add_info(pinfo, pi, &ei_ipv6_opt_jumbo_fragment);
}
frag_tree = proto_item_add_subtree(pi, ett_ipv6_fraghdr_proto);
proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_nxt, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_reserved_octet, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
ti = proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_offset, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_item_append_text(ti, " (%d bytes)", frag_off);
proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_reserved_bits, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_more, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(frag_tree, hf_ipv6_fraghdr_ident, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
if (ipv6_pinfo != NULL && ipv6_pinfo->frag_plen > 0) {
if ((frag_off != 0) || frag_flg) {
reassembled = ipv6_reassemble_do(&tvb, &offset, pinfo, root_tree, ipv6_pinfo->frag_plen,
frag_off, frag_flg, frag_ident, &show_data);
if (show_data) {
next_tvb = tvb_new_subset_remaining(tvb, offset);
call_data_dissector(next_tvb, pinfo, tree);
return tvb_captured_length(tvb);
}
if (reassembled) {
ipv6_pinfo->frag_plen = 0;
next_tvb = tvb_new_subset_remaining(tvb, offset);
ipv6_dissect_next(nxt, next_tvb, pinfo, tree, (ws_ip6 *)data);
return tvb_captured_length(tvb);
}
}
}
p_add_ipv6_nxt(pinfo, nxt);
next_tvb = tvb_new_subset_remaining(tvb, offset);
ipv6_dissect_next(nxt, next_tvb, pinfo, tree, (ws_ip6 *)data);
return tvb_captured_length(tvb);
}
struct opt_proto_item {
proto_item *type, *len;
};
/*
* Jumbo Payload Option
*
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Option Type | Opt Data Len |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Jumbo Payload Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_jumbo(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti, guint8 opt_len)
{
proto_item *pi = proto_tree_get_parent(opt_tree);
proto_item *ti;
guint32 jumbo_plen = 0;
ipv6_pinfo_t *ipv6_pinfo = p_get_ipv6_pinfo(pinfo);
if (opt_len != 4) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"Jumbo Payload: Invalid length (%u bytes)", opt_len);
}
ti = proto_tree_add_item_ret_uint(opt_tree, hf_ipv6_opt_jumbo, tvb, offset, 4, ENC_BIG_ENDIAN, &jumbo_plen);
offset += 4;
if (ipv6_pinfo != NULL && ipv6_pinfo->ip6_plen != 0) {
expert_add_info(pinfo, pi, &ei_ipv6_opt_jumbo_prohibited);
}
if (jumbo_plen < 65536) {
expert_add_info(pinfo, ti, &ei_ipv6_opt_jumbo_truncated);
}
return offset;
}
/*
* RPL Option
*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Option Type | Opt Data Len |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|O|R|F|0|0|0|0|0| RPLInstanceID | SenderRank |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| (sub-TLVs) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_rpl(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti, guint8 opt_len)
{
static int * const rpl_flags[] = {
&hf_ipv6_opt_rpl_flag_o,
&hf_ipv6_opt_rpl_flag_r,
&hf_ipv6_opt_rpl_flag_f,
&hf_ipv6_opt_rpl_flag_rsv,
NULL
};
if (opt_len < 4) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"RPL Option: Invalid length (%u bytes)", opt_len);
}
proto_tree_add_bitmask(opt_tree, tvb, offset, hf_ipv6_opt_rpl_flag, ett_ipv6_opt_rpl, rpl_flags, ENC_NA);
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_rpl_instance_id, tvb, offset, 1, ENC_NA);
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_rpl_senderrank, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
/* TODO: Add dissection of sub-TLVs */
return offset;
}
/*
* Tunnel Encapsulation Limit Option
*
Option Type Opt Data Len Opt Data Len
0 1 2 3 4 5 6 7
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0 0 0 1 0 0| 1 | Tun Encap Lim |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_tel(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti, guint8 opt_len)
{
if (opt_len != 1) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"Tunnel Encapsulation Limit: Invalid length (%u bytes)", opt_len);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_tel, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
return offset;
}
/*
* IPv6 Minimum Path MTU Hop by Hop Option
*
Option Option Option
Type Data Len Data
+--------+--------+--------+--------+---------+-------+-+
|BBCTTTTT|00000100| Min-PMTU | Rtn-PMTU |R|
+--------+--------+--------+--------+---------+-------+-+
Option Type:
BB 00 Skip over this option and continue processing.
C 1 Option data can change en route to the packet's final
destination.
TTTTT 10000 Option Type assigned from IANA [IANA-HBH].
Length: 4 The size of the each value field in Option Data
field supports Path MTU values from 0 to 65,535 octets.
Min-PMTU: n 16-bits. The minimum PMTU in octets, reflecting the
smallest link MTU that the packet experienced across
the path. This is called the Reported PMTU. A value
less than the IPv6 minimum link MTU [RFC8200]
should be ignored.
Rtn-PMTU: n 15-bits. The returned minimum PMTU, carrying the 15
most significant bits of the latest received Min-PMTU
field. The value zero means that no Reported MTU is
being returned.
R n 1-bit. R-Flag. Set by the source to signal that
the destination should include the received
Reported PMTU in Rtn-PMTU field.
[IANA-HBH]
"Destination Options and Hop-by-Hop Options",
<https://www.iana.org/assignments/ipv6-parameters/
ipv6-parameters.xhtml#ipv6-parameters-2>
*/
static gint
dissect_opt_pmtu(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti, guint8 opt_len)
{
guint16 val;
if (opt_len != 4) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"PMTU Option: Invalid Length (%u bytes)", opt_len);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_pmtu_min, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
val = tvb_get_ntohs(tvb, offset);
proto_tree_add_uint(opt_tree, hf_ipv6_opt_pmtu_rtn, tvb, offset, 2, val & 0xFFFE);
offset += 1;
proto_tree_add_boolean(opt_tree, hf_ipv6_opt_pmtu_rtn_flag, tvb, offset, 1, val & 0x0001);
offset += 1;
return offset;
}
/*
* IETF APN6
*
* Application-Aware IPv6 Networking (APN6)
*
* https://datatracker.ietf.org/wg/apn/about/
* https://datatracker.ietf.org/doc/draft-li-apn-header/
* https://datatracker.ietf.org/doc/draft-li-apn-ipv6-encap/
*
* 0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| APN-ID-Type | Flags | APN-Para-Type |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| APN-ID |
| (32-bit/64-bit/128-bit) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* */
static gint
dissect_opt_apn6(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti, guint8 opt_len)
{
if (opt_len < 8) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"APN6 Option: Invalid Length (%u bytes) for basic APN header and shortest APN ID(32-bit)", opt_len);
}
guint32 parsed_offset = 0; // offset is for DOH header; parsed_offset is for APN option.
proto_tree *sub_tree = proto_tree_add_subtree(opt_tree, tvb, offset, opt_len, 0, NULL, "APN Header");
guint8 apn_id_type = tvb_get_guint8(tvb, offset);
proto_item *apn_id_type_i = proto_tree_add_item(sub_tree, hf_ipv6_opt_apn_id_type, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
parsed_offset++;
if (apn_id_type < APN_ID_32BIT || apn_id_type > APN_ID_128BIT) {
expert_add_info_format(pinfo, apn_id_type_i, &ei_ipv6_opt_apn_invalid_id_type,
"APN6 Option: Invalid APN ID Type (%u)", apn_id_type);
}
proto_tree_add_item(sub_tree, hf_ipv6_opt_apn_flags, tvb, offset, 1, ENC_BIG_ENDIAN);
offset++;
parsed_offset++;
proto_tree_add_item(sub_tree, hf_ipv6_opt_apn_param_type, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
parsed_offset += 2;
if (apn_id_type >= APN_ID_32BIT) {
proto_tree_add_item(sub_tree, hf_ipv6_opt_apn_id_part1, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
parsed_offset += 4;
}
if (apn_id_type >= APN_ID_64BIT) {
if (opt_len - parsed_offset < 4) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"APN6 Option: Invalid Length (%u bytes) for 64-bit APN ID, parsed offset %u",
opt_len, parsed_offset);
}
proto_tree_add_item(sub_tree, hf_ipv6_opt_apn_id_part2, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
parsed_offset += 4;
}
if (apn_id_type >= APN_ID_128BIT) {
if (opt_len - parsed_offset < 8) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"APN6 Option: Invalid Length (%u bytes) for 128-bit APN ID, parsed offset %u",
opt_len, parsed_offset);
}
proto_tree_add_item(sub_tree, hf_ipv6_opt_apn_id_part3, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item(sub_tree, hf_ipv6_opt_apn_id_part4, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
return offset;
}
/*
* IPv6 Router Alert Option
*
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0 0 0|0 0 1 0 1|0 0 0 0 0 0 1 0| Value (2 octets) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
length = 2
*/
static gint
dissect_opt_rtalert(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti, guint8 opt_len)
{
if (opt_len != 2) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"Router alert: Invalid Length (%u bytes)", opt_len);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_rtalert, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
return offset;
}
/*
* Quick-Start Option for IPv6
*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Option | Length=6 | Func. | Rate | Not Used |
| | | 1000 | Report| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| QS Nonce | R |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_quickstart(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti, guint8 opt_len, ws_ip6 *iph)
{
proto_item *pi = proto_tree_get_parent(opt_tree);
proto_item *ti;
guint8 command, function, rate;
guint32 qs_ttl = 0;
if (opt_len != 6) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"Quick-Start: Invalid Length (%u bytes)", opt_len);
}
command = tvb_get_guint8(tvb, offset);
function = command >> 4;
rate = command & QS_RATE_MASK;
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_func, tvb, offset, 1, ENC_BIG_ENDIAN);
switch (function) {
case QS_RATE_REQUEST:
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_rate, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item_ret_uint(opt_tree, hf_ipv6_opt_qs_ttl, tvb, offset, 1, ENC_BIG_ENDIAN, &qs_ttl);
proto_item_append_text(pi, ", %s, QS TTL %u",
val_to_str_ext(rate, &qs_rate_vals_ext, "Unknown (%u)"),
qs_ttl);
if (iph != NULL) {
guint8 ttl_diff;
ttl_diff = (iph->ip6_hop - qs_ttl) % 256;
ti = proto_tree_add_uint(opt_tree, hf_ipv6_opt_qs_ttl_diff, tvb, offset, 1, ttl_diff);
proto_item_set_generated(ti);
proto_item_append_text(pi, ", QS TTL diff %u", ttl_diff);
}
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_nonce, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_reserved, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
break;
case QS_RATE_REPORT:
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_rate, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_item_append_text(pi, ", %s", val_to_str_ext(rate, &qs_rate_vals_ext, "Unknown (%u)"));
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_unused, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_nonce, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(opt_tree, hf_ipv6_opt_qs_reserved, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
break;
default:
break;
}
return offset;
}
static const value_string ipv6_ioam_opt_types[] = {
{ IP6IOAM_PRE_TRACE, "Pre-allocated Trace" },
{ IP6IOAM_INC_TRACE, "Incremental Trace" },
{ IP6IOAM_POT, "Proof of Transit" },
{ IP6IOAM_E2E, "Edge to Edge" },
{ 0, NULL}
};
static gint
dissect_opt_ioam_trace_node(tvbuff_t *tvb, gint offset,
proto_tree *opt_tree, guint32 trace_type)
{
proto_tree* sub_tree;
if (trace_type & IP6IOAM_TRACE_MASK_BIT0) {
sub_tree = proto_tree_add_subtree(opt_tree, tvb, offset, 4, 0, NULL,
"Hop_Lim and Node ID (short)");
proto_tree_add_item(sub_tree, hf_ipv6_opt_ioam_trace_node_hlim,
tvb, offset, 1, ENC_NA);
proto_tree_add_item(sub_tree, hf_ipv6_opt_ioam_trace_node_id,
tvb, offset + 1, 3, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT1) {
sub_tree = proto_tree_add_subtree(opt_tree, tvb, offset, 4, 0, NULL,
"Ingress and Egress IDs (short)");
proto_tree_add_item(sub_tree, hf_ipv6_opt_ioam_trace_node_iif,
tvb, offset, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(sub_tree, hf_ipv6_opt_ioam_trace_node_eif,
tvb, offset + 2, 2, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT2) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_tss,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT3) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_tsf,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT4) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_trdelay,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT5) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_nsdata,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT6) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_qdepth,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT7) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_csum,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT8) {
sub_tree = proto_tree_add_subtree(opt_tree, tvb, offset, 8, 0, NULL,
"Hop_Lim and Node ID (wide)");
proto_tree_add_item(sub_tree, hf_ipv6_opt_ioam_trace_node_hlim,
tvb, offset, 1, ENC_NA);
proto_tree_add_item(sub_tree, hf_ipv6_opt_ioam_trace_node_id_wide,
tvb, offset + 1, 7, ENC_BIG_ENDIAN);
offset += 8;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT9) {
sub_tree = proto_tree_add_subtree(opt_tree, tvb, offset, 8, 0, NULL,
"Ingress and Egress IDs (wide)");
proto_tree_add_item(sub_tree, hf_ipv6_opt_ioam_trace_node_iif_wide,
tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(sub_tree, hf_ipv6_opt_ioam_trace_node_eif_wide,
tvb, offset + 4, 4, ENC_BIG_ENDIAN);
offset += 8;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT10) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_nsdata_wide,
tvb, offset, 8, ENC_BIG_ENDIAN);
offset += 8;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT11) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_bufoccup,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT12) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_undefined,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT13) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_undefined,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT14) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_undefined,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT15) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_undefined,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT16) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_undefined,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT17) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_undefined,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT18) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_undefined,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT19) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_undefined,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT20) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_undefined,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
if (trace_type & IP6IOAM_TRACE_MASK_BIT21) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_node_undefined,
tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
}
return offset;
}
/*
* IOAM Trace Option Header
*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Namespace-ID | NodeLen | Flags | RemainingLen|
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| IOAM-Trace-Type | Reserved |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<-+
| | |
| node data list [0] | |
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ D
| | a
| node data list [1] | t
| | a
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
~ ........ ~ S
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ p
| | a
| node data list [n-1] | c
| | e
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
| | |
| node data list [n] | |
| | |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+<-+
*/
static gint
dissect_opt_ioam_trace(tvbuff_t *tvb, gint offset, packet_info *pinfo,
proto_tree *opt_tree, struct opt_proto_item *opt_ti, guint8 opt_len)
{
proto_item *ti;
guint32 trace_type, oss_scid;
guint16 len;
guint8 remlen, nodelen, oss_len, i = 0;
gint new_offset;
static int * const ioam_trace_flags[] = {
&hf_ipv6_opt_ioam_trace_flag_o,
&hf_ipv6_opt_ioam_trace_flag_l,
&hf_ipv6_opt_ioam_trace_flag_a,
&hf_ipv6_opt_ioam_trace_flag_rsv,
NULL
};
static int * const ioam_trace_types[] = {
&hf_ipv6_opt_ioam_trace_type_bit0,
&hf_ipv6_opt_ioam_trace_type_bit1,
&hf_ipv6_opt_ioam_trace_type_bit2,
&hf_ipv6_opt_ioam_trace_type_bit3,
&hf_ipv6_opt_ioam_trace_type_bit4,
&hf_ipv6_opt_ioam_trace_type_bit5,
&hf_ipv6_opt_ioam_trace_type_bit6,
&hf_ipv6_opt_ioam_trace_type_bit7,
&hf_ipv6_opt_ioam_trace_type_bit8,
&hf_ipv6_opt_ioam_trace_type_bit9,
&hf_ipv6_opt_ioam_trace_type_bit10,
&hf_ipv6_opt_ioam_trace_type_bit11,
&hf_ipv6_opt_ioam_trace_type_undef,
&hf_ipv6_opt_ioam_trace_type_bit22,
&hf_ipv6_opt_ioam_trace_type_rsv,
NULL
};
if (opt_len < 10) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"IOAM Option: Invalid length (%u bytes)", opt_len);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_ns, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
nodelen = tvb_get_bits8(tvb, offset * 8, 5);
ti = proto_tree_add_bits_item(opt_tree, hf_ipv6_opt_ioam_trace_nodelen, tvb,
offset * 8, 5, ENC_BIG_ENDIAN);
if (!nodelen)
expert_add_info(pinfo, ti, &ei_ipv6_opt_ioam_invalid_nodelen);
proto_tree_add_bitmask(opt_tree, tvb, offset, hf_ipv6_opt_ioam_trace_flags,
ett_ipv6_opt_ioam_trace_flags, ioam_trace_flags, ENC_NA);
remlen = tvb_get_bits8(tvb, offset * 8 + 9, 7);
ti = proto_tree_add_bits_item(opt_tree, hf_ipv6_opt_ioam_trace_remlen, tvb,
offset * 8 + 9, 7, ENC_BIG_ENDIAN);
if (remlen * 4 > opt_len - 10) {
expert_add_info_format(pinfo, ti, &ei_ipv6_opt_ioam_invalid_remlen,
"IOAM RemLen: Invalid length (%u bytes)", remlen * 4);
}
offset += 2;
trace_type = tvb_get_bits32(tvb, offset * 8, 24, ENC_BIG_ENDIAN);
ti = proto_tree_add_bitmask(opt_tree, tvb, offset, hf_ipv6_opt_ioam_trace_type,
ett_ipv6_opt_ioam_trace_types, ioam_trace_types, ENC_BIG_ENDIAN);
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_trace_rsv, tvb, offset + 3, 1, ENC_NA);
offset += 4;
/* node data list parsing starts here */
if (!nodelen || remlen * 4 > opt_len - 10)
return offset;
proto_tree* trace_tree
= proto_tree_add_subtree(opt_tree, tvb, offset, opt_len - 10, 0, NULL, "Trace Data");
if (remlen) {
proto_tree_add_item(trace_tree, hf_ipv6_opt_ioam_trace_free_space, tvb,
offset, remlen * 4, ENC_NA);
offset += remlen * 4;
}
len = opt_len - 10 - remlen * 4;
while (len && len >= nodelen * 4) {
proto_tree* node_tree
= proto_tree_add_subtree_format(trace_tree, tvb, offset,
nodelen * 4, 0, NULL, "Node %u", ++i);
new_offset = dissect_opt_ioam_trace_node(tvb, offset, node_tree, trace_type);
if (new_offset - offset != nodelen * 4) {
expert_add_info(pinfo, ti, &ei_ipv6_opt_ioam_invalid_trace_type);
return offset;
}
offset = new_offset;
len -= nodelen * 4;
/* Opaque State Snapshot */
if (trace_type & IP6IOAM_TRACE_MASK_BIT22) {
if (len < 4) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"IOAM Option: Invalid length (%u bytes)", opt_len);
return offset;
}
oss_len = tvb_get_guint8(tvb, offset);
proto_tree* oss_tree
= proto_tree_add_subtree(node_tree, tvb, offset, (oss_len + 1) * 4,
0, NULL, "Opaque State Snapshot");
proto_tree_add_item(oss_tree, hf_ipv6_opt_ioam_trace_node_oss_len,
tvb, offset, 1, ENC_NA);
proto_tree_add_item_ret_uint(oss_tree, hf_ipv6_opt_ioam_trace_node_oss_scid,
tvb, offset + 1, 3, ENC_BIG_ENDIAN, &oss_scid);
offset += 4;
len -= 4;
if (len < oss_len * 4) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"IOAM Option: Invalid length (%u bytes)", opt_len);
return offset;
}
if (oss_len > 0) {
proto_tree_add_item(oss_tree, hf_ipv6_opt_ioam_trace_node_oss_data,
tvb, offset, oss_len * 4, ENC_NA);
len -= oss_len * 4;
offset += oss_len * 4;
}
}
}
if (len) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"IOAM Option: Invalid length (%u bytes)", opt_len);
}
return offset;
}
/*
* IOAM Option Header
*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Option Type | Opt Data Len | Reserved | IOAM Type |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_ioam(tvbuff_t *tvb, gint offset, packet_info *pinfo,
proto_tree *opt_tree, struct opt_proto_item *opt_ti, guint8 opt_len)
{
guint32 opt_type;
if (opt_len < 2) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"IOAM Option: Invalid length (%u bytes)", opt_len);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_ioam_rsv, tvb, offset, 1, ENC_NA);
proto_tree_add_item_ret_uint(opt_tree, hf_ipv6_opt_ioam_opt_type, tvb,
offset + 1, 1, ENC_NA, &opt_type);
offset += 2;
proto_tree* opt_type_tree
= proto_tree_add_subtree(opt_tree, tvb, offset, opt_len - 2, 0, NULL,
val_to_str_const(opt_type, ipv6_ioam_opt_types,
"Unknown Option-Type"));
switch (opt_type) {
case IP6IOAM_PRE_TRACE:
case IP6IOAM_INC_TRACE:
offset = dissect_opt_ioam_trace(tvb, offset, pinfo, opt_type_tree, opt_ti, opt_len);
break;
case IP6IOAM_POT:
break;
case IP6IOAM_E2E:
break;
}
return offset;
}
/*
* Tunnel Payload Forwarding Option for IPv6
*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Option Type | Option Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| TPF Information |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_tpf(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti, guint8 opt_len)
{
if (opt_len != 4) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"TPF: Invalid Length (%u bytes)", opt_len);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_tpf_information, tvb, offset, 4, ENC_BIG_ENDIAN);
offset += 4;
return offset;
}
/*
------------------------------------------------------------
| Next Header | Hdr Ext Len | Option Type | Option Length|
+-------------+---------------+-------------+--------------+
| CALIPSO Domain of Interpretation |
+-------------+---------------+-------------+--------------+
| Cmpt Length | Sens Level | Checksum (CRC-16) |
+-------------+---------------+-------------+--------------+
| Compartment Bitmap (Optional; variable length) |
+-------------+---------------+-------------+--------------+
*/
static gint
dissect_opt_calipso(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti, guint8 opt_len)
{
guint32 cmpt_length = 0;
if (opt_len < 8) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"CALIPSO: Invalid Length (%u bytes)", opt_len);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_calipso_doi, tvb,
offset, 4, ENC_BIG_ENDIAN);
offset += 4;
proto_tree_add_item_ret_uint(opt_tree, hf_ipv6_opt_calipso_cmpt_length, tvb,
offset, 1, ENC_BIG_ENDIAN, &cmpt_length);
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_calipso_sens_level, tvb,
offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_checksum(opt_tree, tvb, offset, hf_ipv6_opt_calipso_checksum, -1,
NULL, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS);
offset += 2;
proto_tree_add_item(opt_tree, hf_ipv6_opt_calipso_cmpt_bitmap, tvb,
offset, cmpt_length*4, ENC_NA);
offset += cmpt_length*4;
return offset;
}
/*
* IPv6 SMF_DPD Option Header
*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
... |0|0|0| 01000 | Opt. Data Len |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|0|TidTy| TidLen| TaggerId (optional) ... |
+-+-+-+-+-+-+-+-+ +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| | Identifier ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 3: IPv6 SMF_DPD Option Header in I-DPD mode
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
... |0|0|0| OptType | Opt. Data Len |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|1| Hash Assist Value (HAV) ...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 4: IPv6 SMF_DPD Option Header in H-DPD Mode
*/
static gint
dissect_opt_smf_dpd(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_, proto_tree *opt_tree,
struct opt_proto_item *opt_ti _U_, guint8 opt_len)
{
guint8 hash_tid;
guint8 tid_len;
gint ident_len;
proto_tree_add_item(opt_tree, hf_ipv6_opt_smf_dpd_hash_bit, tvb, offset, 1, ENC_BIG_ENDIAN);
hash_tid = tvb_get_guint8(tvb, offset);
if (hash_tid & 0x80) {
/* H-DPD Mode */
proto_tree_add_item(opt_tree, hf_ipv6_opt_smf_dpd_hav, tvb, offset, opt_len, ENC_NA);
return offset + opt_len;
}
/* I-DPD Mode */
proto_tree_add_item(opt_tree, hf_ipv6_opt_smf_dpd_tid_type, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(opt_tree, hf_ipv6_opt_smf_dpd_tid_len, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
ident_len = opt_len - 1;
if (hash_tid & 0x70) {
tid_len = (hash_tid & 0x0f) + 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_smf_dpd_tagger_id, tvb, offset, tid_len, ENC_NA);
offset += tid_len;
ident_len -= tid_len;
}
if (ident_len > 0) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_smf_dpd_ident, tvb, offset, ident_len, ENC_NA);
offset += ident_len;
}
return offset;
}
/*
* Performance and Diagnostic Metrics Destination Option (ietf-ippm-6man-pdm-option-13)
*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Option Type | Option Length | ScaleDTLR | ScaleDTLS |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| PSN This Packet | PSN Last Received |
|-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Delta Time Last Received | Delta Time Last Sent |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_pdm(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_, proto_tree *opt_tree,
struct opt_proto_item *opt_ti _U_, guint8 opt_len)
{
if (opt_len != 10) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"PDM: Invalid length (%u bytes)", opt_len);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_pdm_scale_dtlr, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_pdm_scale_dtls, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_pdm_psn_this_pkt, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(opt_tree, hf_ipv6_opt_pdm_psn_last_recv, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(opt_tree, hf_ipv6_opt_pdm_delta_last_recv, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
proto_tree_add_item(opt_tree, hf_ipv6_opt_pdm_delta_last_sent, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
return offset;
}
/*
* Home Address Option
*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Option Type | Option Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| |
+ +
| |
+ Home Address +
| |
+ +
| |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_home_address(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti, guint8 opt_len)
{
if (opt_len != 16) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"Home Address: Invalid length (%u bytes)", opt_len);
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_mipv6_home_address, tvb, offset, IPv6_ADDR_SIZE, ENC_NA);
alloc_address_tvb_ipv6(pinfo->pool, &pinfo->src, tvb, offset);
offset += IPv6_ADDR_SIZE;
return offset;
}
/*
* ILNP Nonce Option
*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Next Header | Hdr Ext Len | Option Type | Option Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
/ Nonce Value /
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_ilnp_nonce(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_, proto_tree *opt_tree,
struct opt_proto_item *opt_ti _U_, guint8 opt_len)
{
proto_tree_add_item(opt_tree, hf_ipv6_opt_ilnp_nonce, tvb, offset, opt_len, ENC_NA);
offset += opt_len;
return offset;
}
/*
* Line-Identification Option
*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Option Type | Option Length |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| LineIDLen | Line ID...
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_lio(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_, proto_tree *opt_tree,
struct opt_proto_item *opt_ti _U_, guint8 opt_len)
{
guint32 lid_len = 0;
proto_tree_add_item_ret_uint(opt_tree, hf_ipv6_opt_lio_len, tvb, offset, 1, ENC_BIG_ENDIAN, &lid_len);
offset += 1;
if (lid_len + 1 > opt_len) {
/* XXX Add expert info */
lid_len = opt_len - 1;
}
proto_tree_add_item(opt_tree, hf_ipv6_opt_lio_id, tvb, offset, lid_len, ENC_BIG_ENDIAN|ENC_ASCII);
offset += lid_len;
return offset;
}
/*
* MPL Option
*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Option Type | Opt Data Len |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| S |M|V| rsv | sequence | seed-id (optional) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_mpl(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_, proto_tree *opt_tree,
struct opt_proto_item *opt_ti _U_, guint8 opt_len _U_)
{
static int * const mpl_flags[] = {
&hf_ipv6_opt_mpl_flag_s,
&hf_ipv6_opt_mpl_flag_m,
&hf_ipv6_opt_mpl_flag_v,
&hf_ipv6_opt_mpl_flag_rsv,
NULL
};
static const guint8 seed_id_len_arr[4] = {0, 2, 8, 16};
guint8 seed_id_len;
proto_tree_add_bitmask(opt_tree, tvb, offset, hf_ipv6_opt_mpl_flag, ett_ipv6_opt_mpl, mpl_flags, ENC_NA);
seed_id_len = seed_id_len_arr[tvb_get_guint8(tvb, offset) >> 6];
offset +=1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_mpl_sequence, tvb, offset, 1, ENC_NA);
offset +=1;
if (seed_id_len > 0) {
proto_tree_add_item(opt_tree, hf_ipv6_opt_mpl_seed_id, tvb, offset, seed_id_len, ENC_NA);
offset += seed_id_len;
}
else {
expert_add_info(pinfo, opt_ti->type, &ei_ipv6_opt_mpl_ipv6_src_seed_id);
}
return offset;
}
/*
* IPv6 DFF Header
*
1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| Next Header | Hdr Ext Len | OptTypeDFF | OptDataLenDFF |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|VER|D|R|0|0|0|0| Sequence Number | Pad1 |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
static gint
dissect_opt_dff(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti, guint8 opt_len)
{
static int * const dff_flags[] = {
&hf_ipv6_opt_dff_flag_ver,
&hf_ipv6_opt_dff_flag_dup,
&hf_ipv6_opt_dff_flag_ret,
&hf_ipv6_opt_dff_flag_rsv,
NULL
};
/* Option length is 3 octets */
/* http://www.rfc-editor.org/errata_search.php?eid=3937 */
if (opt_len != 3) {
expert_add_info_format(pinfo, opt_ti->len, &ei_ipv6_opt_invalid_len,
"IPv6 DFF: Invalid length (%u bytes)", opt_len);
}
proto_tree_add_bitmask(opt_tree, tvb, offset, hf_ipv6_opt_dff_flags,
ett_ipv6_opt_dff_flags, dff_flags, ENC_NA);
offset += 1;
proto_tree_add_item(opt_tree, hf_ipv6_opt_dff_seqnum, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
return offset;
}
static gint
dissect_opt_unknown(tvbuff_t *tvb, gint offset, packet_info *pinfo, proto_tree *opt_tree,
struct opt_proto_item *opt_ti _U_, guint8 opt_len)
{
proto_item *ti;
ti = proto_tree_add_item(opt_tree, hf_ipv6_opt_unknown, tvb,
offset, opt_len, ENC_NA);
expert_add_info(pinfo, ti, &ei_ipv6_opt_unknown_data);
return offset + opt_len;
}
static int
dissect_opts(tvbuff_t *tvb, int offset, proto_tree *tree, packet_info *pinfo, ws_ip6 *iph, const int exthdr_proto)
{
gint len, offset_end;
guint8 nxt;
proto_tree *exthdr_tree, *opt_tree, *opt_type_tree, *root_tree;
proto_item *pi, *ti, *ti_len;
int hf_exthdr_item_nxt, hf_exthdr_item_len, hf_exthdr_item_len_oct;
int ett_exthdr_proto;
guint8 opt_type, opt_len, opt_start;
gint opt_hdr_type;
const gchar *opt_name;
gboolean hopopts;
struct opt_proto_item opt_ti;
tvbuff_t *next_tvb;
hopopts = (exthdr_proto == proto_ipv6_hopopts);
nxt = tvb_get_guint8(tvb, offset);
len = (tvb_get_guint8(tvb, offset + 1) + 1) << 3;
offset_end = offset + len;
root_tree = p_ipv6_pinfo_select_root(pinfo, tree);
p_ipv6_pinfo_add_len(pinfo, len);
/* !!! specify length */
ti = proto_tree_add_item(root_tree, exthdr_proto, tvb, offset, len, ENC_NA);
if (hopopts && ipv6_previous_layer_id(pinfo) != proto_ipv6) {
/* IPv6 Hop-by-Hop must appear immediately after IPv6 header (RFC 2460) */
expert_add_info(pinfo, ti, &ei_ipv6_hopopts_not_first);
}
if (exthdr_proto == proto_ipv6_hopopts) {
hf_exthdr_item_nxt = hf_ipv6_hopopts_nxt;
hf_exthdr_item_len = hf_ipv6_hopopts_len;
hf_exthdr_item_len_oct = hf_ipv6_hopopts_len_oct;
ett_exthdr_proto = ett_ipv6_hopopts_proto;
} else if (exthdr_proto == proto_ipv6_dstopts) {
hf_exthdr_item_nxt = hf_ipv6_dstopts_nxt;
hf_exthdr_item_len = hf_ipv6_dstopts_len;
hf_exthdr_item_len_oct = hf_ipv6_dstopts_len_oct;
ett_exthdr_proto = ett_ipv6_dstopts_proto;
} else {
DISSECTOR_ASSERT_NOT_REACHED();
}
exthdr_tree = proto_item_add_subtree(ti, ett_exthdr_proto);
proto_tree_add_item(exthdr_tree, hf_exthdr_item_nxt, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
ti_len = proto_tree_add_item(exthdr_tree, hf_exthdr_item_len, tvb, offset, 1, ENC_BIG_ENDIAN);
ti = proto_tree_add_uint(exthdr_tree, hf_exthdr_item_len_oct, tvb, offset, 1, len);
proto_item_set_generated(ti);
if (ipv6_exthdr_hide_len_oct_field) {
proto_item_set_hidden(ti);
proto_item_append_text(ti_len, " (%d bytes)", len);
}
offset += 1;
while (offset < offset_end) {
/* there are more options */
opt_type = tvb_get_guint8(tvb, offset);
opt_len = tvb_get_guint8(tvb, offset + 1);
opt_name = val_to_str_ext(opt_type, &ipv6_opt_type_vals_ext, "Unknown IPv6 Option (%u)");
pi = proto_tree_add_none_format(exthdr_tree, hf_ipv6_opt, tvb, offset, 2 + opt_len,
"%s", opt_name);
opt_tree = proto_item_add_subtree(pi, ett_ipv6_opt);
opt_ti.type = proto_tree_add_item(opt_tree, hf_ipv6_opt_type, tvb, offset, 1, ENC_BIG_ENDIAN);
if (opt_type == IP6OPT_PAD1) {
/* The Pad1 option is a special case, and contains no data. */
proto_tree_add_item(opt_tree, hf_ipv6_opt_pad1, tvb, offset, 1, ENC_NA);
offset += 1;
continue;
}
if ((opt_hdr_type = ipv6_opt_type_hdr(opt_type)) != IPv6_OPT_HDR_ANY) {
if (hopopts && (opt_hdr_type == IPv6_OPT_HDR_DST)) {
expert_add_info_format(pinfo, opt_ti.type, &ei_ipv6_opt_header_mismatch,
"%s must use a destination options header", opt_name);
}
else if (!hopopts && (opt_hdr_type == IPv6_OPT_HDR_HBH)) {
expert_add_info_format(pinfo, opt_ti.type, &ei_ipv6_opt_header_mismatch,
"%s must use a hop-by-hop options header", opt_name);
}
}
opt_type_tree = proto_item_add_subtree(opt_ti.type, ett_ipv6_opt_type);
proto_tree_add_item(opt_type_tree, hf_ipv6_opt_type_action, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(opt_type_tree, hf_ipv6_opt_type_change, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(opt_type_tree, hf_ipv6_opt_type_rest, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
opt_ti.len = proto_tree_add_item(opt_tree, hf_ipv6_opt_length, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
if (opt_type == IP6OPT_PADN) {
/* RFC 2460 states :
* "The PadN option is used to insert two or more octets of
* padding into the Options area of a header. For N octets of
* padding, the Opt Data Len field contains the value N-2, and
* the Option Data consists of N-2 zero-valued octets."
*/
proto_tree_add_item(opt_tree, hf_ipv6_opt_padn, tvb, offset, opt_len, ENC_NA);
offset += opt_len;
continue;
}
opt_start = offset;
switch (opt_type) {
case IP6OPT_JUMBO:
offset = dissect_opt_jumbo(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_RPL:
offset = dissect_opt_rpl(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_TEL:
offset = dissect_opt_tel(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_RTALERT:
offset = dissect_opt_rtalert(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_PMTU:
offset = dissect_opt_pmtu(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_APN6:
offset = dissect_opt_apn6(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_QUICKSTART:
offset = dissect_opt_quickstart(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len, iph);
break;
case IP6OPT_IOAM:
offset = dissect_opt_ioam(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_TPF:
offset = dissect_opt_tpf(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_CALIPSO:
offset = dissect_opt_calipso(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_SMF_DPD:
offset = dissect_opt_smf_dpd(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_PDM:
offset = dissect_opt_pdm(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_HOME_ADDRESS:
offset = dissect_opt_home_address(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_ILNP_NONCE:
offset = dissect_opt_ilnp_nonce(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_LIO:
offset = dissect_opt_lio(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_MPL:
offset = dissect_opt_mpl(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_IP_DFF:
offset = dissect_opt_dff(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_ENDI:
offset = dissect_opt_unknown(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
expert_add_info(pinfo, opt_ti.type, &ei_ipv6_opt_deprecated);
break;
case IP6OPT_EXP_1E:
case IP6OPT_EXP_3E:
case IP6OPT_EXP_5E:
case IP6OPT_EXP_7E:
case IP6OPT_EXP_9E:
case IP6OPT_EXP_BE:
case IP6OPT_EXP_DE:
case IP6OPT_EXP_FE:
proto_tree_add_item(opt_tree, hf_ipv6_opt_experimental, tvb,
offset, opt_len, ENC_NA);
offset += opt_len;
break;
default:
offset = dissect_opt_unknown(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
}
if (offset < opt_start + opt_len) {
ti = proto_tree_add_item(opt_tree, hf_ipv6_opt_unknown_data, tvb,
offset, opt_start + opt_len - offset, ENC_NA);
expert_add_info(pinfo, ti, &ei_ipv6_opt_unknown_data);
offset = opt_start + opt_len;
}
}
p_add_ipv6_nxt(pinfo, nxt);
next_tvb = tvb_new_subset_remaining(tvb, len);
ipv6_dissect_next(nxt, next_tvb, pinfo, tree, iph);
return tvb_captured_length(tvb);
}
static int
dissect_hopopts(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, " , ", "IPv6 hop-by-hop options");
return dissect_opts(tvb, 0, tree, pinfo, (ws_ip6 *)data, proto_ipv6_hopopts);
}
static int
dissect_dstopts(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, " , ", "IPv6 destination options");
return dissect_opts(tvb, 0, tree, pinfo, (ws_ip6 *)data, proto_ipv6_dstopts);
}
/* return value is > G_MAXUINT16, else zero */
/* tvb + offset contains the Hbh header */
static guint32
ipv6_get_jumbo_plen(tvbuff_t *tvb, gint offset)
{
gint offset_end, hdr_len;
gint opt_type, opt_len;
guint32 jumbo_plen;
if (!tvb_bytes_exist(tvb, offset, 2)) {
return 0;
}
hdr_len = (tvb_get_guint8(tvb, offset + 1) + 1) * 8;
offset_end = offset + hdr_len;
offset +=2;
while (offset < offset_end && tvb_bytes_exist(tvb, offset, 6)) {
opt_type = tvb_get_guint8(tvb, offset);
offset += 1;
if (opt_type == IP6OPT_PAD1) {
continue;
}
opt_len = tvb_get_guint8(tvb, offset);
offset += 1;
if (opt_type == IP6OPT_JUMBO && opt_len == 4) {
jumbo_plen = tvb_get_guint32(tvb, offset, ENC_BIG_ENDIAN);
if (jumbo_plen > G_MAXUINT16) {
return jumbo_plen;
}
return 0;
}
offset += opt_len;
}
return 0;
}
struct ipv6_addr_and_mask {
uint8_t addr[16];
uint8_t mask[16];
};
typedef struct ipv6_addr_and_mask ipv6_range_t;
/* https://www.iana.org/assignments/iana-ipv6-special-registry/iana-ipv6-special-registry.xhtml */
static struct ipv6_special_range_s {
ipv6_range_t range;
const char *name;
} ipv6_special_purpose_registry[] = {
{
{
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
},
"Loopback Address"
},
{
{
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
},
"Unspecified Address"
},
{
{
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 },
},
"IPv4-mapped Address"
},
{
{
{ 0x00, 0x64, 0xff, 0x9b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00 },
},
"IPv4-IPv6 Translat."
},
{
{
{ 0x00, 0x64, 0xff, 0x9b, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"IPv4-IPv6 Translat."
},
{
{
{ 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"Discard-Only Address Block"
},
{
{
{ 0x20, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"IETF Protocol Assignments"
},
{
{
{ 0x20, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"TEREDO"
},
{
{
{ 0x20, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
},
"Port Control Protocol Anycast"
},
{
{
{ 0x20, 0x01, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
},
"Traversal Using Relays around NAT Anycast"
},
{
{
{ 0x20, 0x01, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"Benchmarking"
},
{
{
{ 0x20, 0x01, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"AMT"
},
{
{
{ 0x20, 0x01, 0x00, 0x04, 0x01, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"AS112-v6"
},
{
{
{ 0x20, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xf0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"ORCHIDv2"
},
{
{
{ 0x20, 0x01, 0x0d, 0xb8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"Documentation"
},
{
{
{ 0x20, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"6to4"
},
{
{
{ 0x26, 0x20, 0x00, 0x4f, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"Direct Delegation AS112 Service"
},
{
{
{ 0xfc, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xfe, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"Unique-Local"
},
{
{
{ 0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0xff, 0xc0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
"Link-Local Unicast"
},
{
{
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
},
NULL
},
};
static bool
match_ipv6_range(const ipv6_range_t *range, const ws_in6_addr *addr)
{
int i;
for (i = 0; i < 16; i++) {
if (range->addr[i] != (addr->bytes[i] & range->mask[i])) {
return false;
}
}
return true;
}
static void
add_ipv6_address_detail(packet_info *pinfo, proto_item *vis, proto_item *invis,
tvbuff_t *tvb, int offset, struct ipv6_addr_info_s *addr_info)
{
proto_item *ti;
proto_tree *vtree; /* visible tree */
proto_tree *itree; /* invisible tree */
vtree = proto_item_add_subtree(vis, ett_ipv6_detail);
itree = proto_item_add_subtree(invis, ett_ipv6_detail);
/*
* Internet Protocol Version 6 Address Space
* https://www.iana.org/assignments/ipv6-address-space/ipv6-address-space.xhtml
*/
if (tvb_get_guint8(tvb, offset) == 0xFF) {
/* RFC 4291 section 2.4: multicast prefix */
ti = proto_tree_add_string(vtree, *addr_info->hf_addr_space, tvb, offset, 1, "Multicast");
proto_item_set_generated(ti);
if (addr_info == &ipv6_src_info) {
/* "Shouldn't" see this one as a source */
expert_add_info(pinfo, ti, &ei_ipv6_src_addr_not_multicast);
}
ti = proto_tree_add_string(itree, hf_ipv6_addr_space, tvb, offset, 1, "Multicast");
proto_item_set_generated(ti);
/*
* Multicast address scope and flags.
*
* RFC 4291 Section 2.7:
* https://www.rfc-editor.org/rfc/rfc4291#section-2.7
*
* RFC 7346:
* https://www.rfc-editor.org/rfc/rfc7346.html
*
* IANA Registry:
* https://www.iana.org/assignments/ipv6-multicast-addresses/ipv6-multicast-addresses.xhtml#ipv6-scope
*/
static int *const hf_ipv6_multicast_flags_bits[] = {
&hf_ipv6_multicast_flags_reserved,
&hf_ipv6_multicast_flags_embed_rp,
&hf_ipv6_multicast_flags_network_prefix,
&hf_ipv6_multicast_flags_transient,
NULL
};
/* Add multicast address flags. */
ti = proto_tree_add_bitmask(vtree, tvb, offset, *addr_info->hf_multicast_flags,
ett_ipv6_multicast_flags, addr_info->hf_multicast_flags_bits, ENC_BIG_ENDIAN);
proto_item_set_generated(ti);
ti = proto_tree_add_bitmask(itree, tvb, offset, hf_ipv6_multicast_flags,
ett_ipv6_multicast_flags, hf_ipv6_multicast_flags_bits, ENC_BIG_ENDIAN);
proto_item_set_generated(ti);
/* Add multicast address scope. */
ti = proto_tree_add_item(vtree, *addr_info->hf_multicast_scope, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_item_set_generated(ti);
ti = proto_tree_add_item(itree, hf_ipv6_multicast_scope, tvb, offset, 2, ENC_BIG_ENDIAN);
proto_item_set_generated(ti);
}
else if ((tvb_get_ntohs(tvb, offset) & 0xFFC0) == 0xFE80) {
ti = proto_tree_add_string(vtree, *addr_info->hf_addr_space, tvb, offset, 2, "Link-Local Unicast");
proto_item_set_generated(ti);
ti = proto_tree_add_string(itree, hf_ipv6_addr_space, tvb, offset, 2, "Link-Local Unicast");
proto_item_set_generated(ti);
}
else if ((tvb_get_guint8(tvb, offset) & 0x30) == 0x20) {
ti = proto_tree_add_string(vtree, *addr_info->hf_addr_space, tvb, offset, 2, "Global Unicast");
proto_item_set_generated(ti);
ti = proto_tree_add_string(itree, hf_ipv6_addr_space, tvb, offset, 2, "Global Unicast");
proto_item_set_generated(ti);
}
else if ((tvb_get_guint8(tvb, offset) & 0xFE) == 0xFC) {
ti = proto_tree_add_string(vtree, *addr_info->hf_addr_space, tvb, offset, 2, "Unique Local Unicast");
proto_item_set_generated(ti);
ti = proto_tree_add_string(itree, hf_ipv6_addr_space, tvb, offset, 2, "Unique Local Unicast");
proto_item_set_generated(ti);
}
else {
ti = proto_tree_add_string(vtree, *addr_info->hf_addr_space, tvb, offset, 2, "Reserved by IETF");
proto_item_set_generated(ti);
ti = proto_tree_add_string(itree, hf_ipv6_addr_space, tvb, offset, 2, "Reserved by IETF");
proto_item_set_generated(ti);
}
/* Check for IPv6 address special-purpose ranges. */
const ws_in6_addr *addr = tvb_get_ptr_ipv6(tvb, offset);
const struct ipv6_special_range_s *rp;
for (rp = ipv6_special_purpose_registry; rp->name != NULL; rp++) {
if (match_ipv6_range(&rp->range, addr)) {
ti = proto_tree_add_string(vtree, *addr_info->hf_special_purpose, tvb, offset, IPv6_ADDR_SIZE, rp->name);
proto_item_set_generated(ti);
ti = proto_tree_add_string(itree, hf_ipv6_addr_special_purpose, tvb, offset, IPv6_ADDR_SIZE, rp->name);
proto_item_set_generated(ti);
break;
}
}
}
static void
add_ipv6_address(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset,
struct ipv6_addr_info_s *addr_info)
{
address addr;
const char *name;
proto_item *ti, *vis, *invis;
vis = proto_tree_add_item(tree, *addr_info->hf_addr, tvb, offset, IPv6_ADDR_SIZE, ENC_NA);
invis = proto_tree_add_item(tree, hf_ipv6_addr, tvb, offset, IPv6_ADDR_SIZE, ENC_NA);
proto_item_set_hidden(invis);
set_address_ipv6_tvb(&addr, tvb, offset);
name = address_to_display(pinfo->pool, &addr);
if (ipv6_address_detail) {
add_ipv6_address_detail(pinfo, vis, invis, tvb, offset, addr_info);
}
ti = proto_tree_add_string(tree, *addr_info->hf_host, tvb, offset, IPv6_ADDR_SIZE, name);
proto_item_set_generated(ti);
proto_item_set_hidden(ti);
ti = proto_tree_add_string(tree, hf_ipv6_host, tvb, offset, IPv6_ADDR_SIZE, name);
proto_item_set_generated(ti);
proto_item_set_hidden(ti);
}
#define ADDRESS_SET_GENERATED_HIDDEN(ti) \
G_STMT_START { \
proto_item_set_generated(ti); \
if (i > 0) proto_item_set_hidden(ti); \
} G_STMT_END
/* RFC 3056 section 2 */
static void
add_ipv6_address_6to4(proto_tree *tree, tvbuff_t *tvb, int offset,
gint hf_gateway, gint hf_sla_id)
{
if (tvb_get_ntohs(tvb, offset) != 0x2002)
return;
struct { gint gateway, sla_id; } hf[2] = {
{ hf_gateway, hf_sla_id},
{ hf_ipv6_6to4_gateway_ipv4, hf_ipv6_6to4_sla_id}
};
proto_item *ti;
for (int i = 0; i < 2; i++) {
ti = proto_tree_add_item(tree, hf[i].gateway, tvb, offset + 2, 4, ENC_BIG_ENDIAN);
ADDRESS_SET_GENERATED_HIDDEN(ti);
ti = proto_tree_add_item(tree, hf[i].sla_id, tvb, offset + 6, 2, ENC_BIG_ENDIAN);
ADDRESS_SET_GENERATED_HIDDEN(ti);
}
}
/* RFC 4380 section 4 */
static void
add_ipv6_address_teredo(proto_tree *tree, tvbuff_t *tvb, int offset,
gint hf_server, gint hf_port, gint hf_client)
{
if (tvb_get_ntohl(tvb, offset) != 0x20010000)
return;
guint16 mapped_port = tvb_get_ntohs(tvb, offset + 10) ^ 0xffff;
guint32 client_v4 = tvb_get_ipv4(tvb, offset + 12) ^ 0xffffffff;
struct { gint server, port, client; } hf[2] = {
{ hf_server, hf_port, hf_client },
{ hf_ipv6_teredo_server_ipv4, hf_ipv6_teredo_port, hf_ipv6_teredo_client_ipv4 }
};
proto_item *ti;
for (int i = 0; i < 2; i++) {
ti = proto_tree_add_item(tree, hf[i].server, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
ADDRESS_SET_GENERATED_HIDDEN(ti);
ti = proto_tree_add_uint(tree, hf[i].port, tvb, offset + 10, 2, mapped_port);
ADDRESS_SET_GENERATED_HIDDEN(ti);
ti = proto_tree_add_ipv4(tree, hf[i].client, tvb, offset + 12, 4, client_v4);
ADDRESS_SET_GENERATED_HIDDEN(ti);
}
}
/* RFC 4291 appendix A */
static void
add_ipv6_address_slaac(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, gint hf_slaac)
{
if (!(tvb_get_guint8(tvb, offset + 8) & 0x02) ||
!(tvb_get_ntohs(tvb, offset + 11) == 0xfffe)) {
return;
}
guint8 *mac_addr = (guint8 *)wmem_alloc(pinfo->pool, 6);
tvb_memcpy(tvb, mac_addr, offset + 8, 3);
tvb_memcpy(tvb, mac_addr+3, offset + 13, 3);
mac_addr[0] &= ~0x02;
struct { gint mac; } hf[2] = {
{ hf_slaac },
{ hf_ipv6_slaac_mac }
};
proto_item *ti;
for (int i = 0; i < 2; i++) {
ti = proto_tree_add_ether(tree, hf[i].mac, tvb, offset + 8, 8, mac_addr);
ADDRESS_SET_GENERATED_HIDDEN(ti);
}
}
/* RFC 5214 section 6.1 */
static void
add_ipv6_address_isatap(proto_tree *tree, tvbuff_t *tvb, int offset, gint hf_isatap)
{
if ((tvb_get_ntohl(tvb, offset + 8) & 0xfcffffff) != 0x00005efe)
return;
struct { gint ipv4; } hf[2] = {
{ hf_isatap },
{ hf_ipv6_isatap_ipv4 }
};
proto_item *ti;
for (int i = 0; i < 2; i++) {
ti = proto_tree_add_item(tree, hf[i].ipv4, tvb, offset + 12, 4, ENC_BIG_ENDIAN);
ADDRESS_SET_GENERATED_HIDDEN(ti);
}
}
/* RFC 6052 */
static void
add_ipv6_address_embed_ipv4(packet_info *pinfo, proto_tree *tree, tvbuff_t *tvb, int offset, gint hf_embed)
{
/* Section 2.1: Well-Known Prefix for IPv4-Embedded IPv6 Address: 64:FF9B::/96 */
static const guint8 well_known_prefix[] = {
0x00, 0x64, 0xFF, 0x9B,
0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00
};
ws_in6_addr ipv6_addr;
ws_in4_addr ipv4_addr;
gint ipv4_prefix;
gint ipv4_offset;
gboolean ipv6_embed_ipv4 = false;
if (tvb_memeql(tvb, offset, well_known_prefix, sizeof well_known_prefix) == 0) {
ipv4_addr = tvb_get_bits32(tvb, (offset * 8) + 96, 32, ENC_BIG_ENDIAN);
ipv4_prefix = 96;
ipv4_offset = 96;
ipv6_embed_ipv4 = true;
} else {
for (size_t j = 0; j < number_of_nat64_prefix; j++) {
if (nat64_prefix_uats[j].prefix_len <= nat64_prefix_uats[j].prefix_wildcard_len) {
continue;
}
if (ws_inet_pton6(nat64_prefix_uats[j].ipaddr, &ipv6_addr)) {
if (tvb_memeql(tvb, offset, (const guint8 *)&ipv6_addr,
(nat64_prefix_uats[j].prefix_len - nat64_prefix_uats[j].prefix_wildcard_len) / 8) == 0) {
switch (nat64_prefix_uats[j].prefix_len)
{
case 32:
ipv4_addr = tvb_get_bits32(tvb, (offset * 8) + 32, 32, ENC_BIG_ENDIAN);
break;
case 40:
ipv4_addr = tvb_get_bits32(tvb, (offset * 8) + 40, 24, ENC_BIG_ENDIAN) << 8;
ipv4_addr |= tvb_get_bits32(tvb, (offset * 8) + 72, 8, ENC_BIG_ENDIAN);
break;
case 48:
ipv4_addr = tvb_get_bits32(tvb, (offset * 8) + 48, 16, ENC_BIG_ENDIAN) << 16;
ipv4_addr |= tvb_get_bits32(tvb, (offset * 8) + 72, 16, ENC_BIG_ENDIAN);
break;
case 56:
ipv4_addr = tvb_get_bits32(tvb, (offset * 8) + 56, 8, ENC_BIG_ENDIAN) << 24;
ipv4_addr |= tvb_get_bits32(tvb, (offset * 8) + 72, 24, ENC_BIG_ENDIAN);
break;
case 64:
ipv4_addr = tvb_get_bits32(tvb, (offset * 8) + 72, 32, ENC_BIG_ENDIAN);
break;
case 96:
ipv4_addr = tvb_get_bits32(tvb, (offset * 8) + 96, 32, ENC_BIG_ENDIAN);
break;
default:
DISSECTOR_ASSERT_NOT_REACHED();
}
ipv4_prefix = nat64_prefix_uats[j].prefix_len;
if (ipv4_prefix != 64) {
ipv4_offset = ipv4_prefix;
} else {
ipv4_offset = 72;
}
ipv6_embed_ipv4 = true;
break;
}
}
}
}
if (ipv6_embed_ipv4) {
proto_item *ti;
// The prefix
ti = proto_tree_add_item(tree, hf_ipv6_embed_ipv4_prefix, tvb, offset, ipv4_prefix / 8, ENC_NA);
proto_item_set_generated(ti);
// Majority of IPv4 address is after u-field
if (ipv4_prefix >= 56) {
if (ipv4_prefix < 96) {
ti = proto_tree_add_item(tree, hf_ipv6_embed_ipv4_u, tvb, offset + 8, 1, ENC_NA);
proto_item_set_generated(ti);
}
if (tvb_get_guint8(tvb, offset + 8)) {
expert_add_info(pinfo, ti, &ei_ipv6_embed_ipv4_u_value);
}
}
// IPv4 embedded address
ipv4_addr = g_ntohl(ipv4_addr);
ti = proto_tree_add_ipv4(tree, hf_embed, tvb,
offset + (ipv4_offset / 8),
(ipv4_offset > 32 && ipv4_offset < 64) ? 5 : 4, ipv4_addr);
proto_item_set_generated(ti);
ti = proto_tree_add_ipv4(tree, hf_ipv6_embed_ipv4, tvb,
offset + (ipv4_offset / 8),
(ipv4_offset > 32 && ipv4_offset < 64) ? 5 : 4, ipv4_addr);
proto_item_set_generated(ti);
// Majority of IPv4 address is before u-field
if (ipv4_prefix < 56) {
ti = proto_tree_add_item(tree, hf_ipv6_embed_ipv4_u, tvb, offset + 8, 1, ENC_NA);
proto_item_set_generated(ti);
if (tvb_get_guint8(tvb, offset + 8)) {
expert_add_info(pinfo, ti, &ei_ipv6_embed_ipv4_u_value);
}
}
// Suffix, if present
if (ipv4_prefix < 96) {
ti = proto_tree_add_item(tree, hf_ipv6_embed_ipv4_suffix, tvb,
offset + ((72 + ipv4_prefix - 32) / 8),
(56 - (ipv4_prefix - 32)) / 8,
ENC_NA);
proto_item_set_generated(ti);
}
}
}
static void
export_pdu(tvbuff_t *tvb, packet_info *pinfo)
{
if (have_tap_listener(exported_pdu_tap)) {
exp_pdu_data_t *exp_pdu_data = wmem_new0(pinfo->pool, exp_pdu_data_t);
exp_pdu_data->tvb_captured_length = tvb_captured_length(tvb);
exp_pdu_data->tvb_reported_length = tvb_reported_length(tvb);
exp_pdu_data->pdu_tvb = tvb;
tap_queue_packet(exported_pdu_tap, pinfo, exp_pdu_data);
}
}
static int
dissect_ipv6(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *ipv6_tree, *pt;
proto_item *ipv6_item, *ti, *pi;
proto_item *ti_ipv6_plen = NULL, *ti_ipv6_version;
guint8 ip6_tcls, ip6_nxt, ip6_hlim;
guint32 ip6_flow;
const ws_in6_addr *ip6_src, *ip6_dst;
guint32 ip6_plen = 0, jumbo_plen = 0;
guint32 plen;
int offset;
guint reported_plen;
tvbuff_t *next_tvb;
gboolean save_fragmented;
int version;
ws_ip6 *iph;
offset = 0;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "IPv6");
col_clear(pinfo->cinfo, COL_INFO);
ipv6_item = proto_tree_add_item(tree, proto_ipv6, tvb, offset, IPv6_HDR_SIZE, ENC_NA);
ipv6_tree = proto_item_add_subtree(ipv6_item, ett_ipv6_proto);
/* Validate IP version (6) */
version = tvb_get_bits8(tvb, (offset + IP6H_CTL_VFC) * 8, 4);
ti_ipv6_version = proto_tree_add_bits_item(ipv6_tree, hf_ipv6_version, tvb,
(offset + IP6H_CTL_VFC) * 8, 4, ENC_BIG_ENDIAN);
pi = proto_tree_add_item(ipv6_tree, hf_ip_version, tvb,
offset + IP6H_CTL_VFC, 1, ENC_BIG_ENDIAN);
proto_item_append_text(pi, " [This field makes the filter match on \"ip.version == 6\" possible]");
proto_item_set_hidden(pi);
if (version != 6) {
col_add_fstr(pinfo->cinfo, COL_INFO,
"Bogus IPv6 version (%u, must be 6)", version);
expert_add_info_format(pinfo, ti_ipv6_version, &ei_ipv6_bogus_ipv6_version, "Bogus IPv6 version");
return offset + IP6H_CTL_VFC;
}
/* Validate header size (40 bytes) */
if (tvb_reported_length(tvb) < IPv6_HDR_SIZE) {
col_add_fstr(pinfo->cinfo, COL_INFO,
"Invalid IPv6 header (%u bytes, need exactly 40)",
tvb_reported_length(tvb));
expert_add_info_format(pinfo, ipv6_item, &ei_ipv6_invalid_header,
"IPv6 header must be exactly 40 bytes");
}
/* !!! warning: (4-bit) version, (6-bit) DSCP, (2-bit) ECN and (20-bit) Flow */
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_tclass, tvb,
offset + IP6H_CTL_VFC, 4, ENC_BIG_ENDIAN);
ip6_tcls = tvb_get_bits8(tvb, (offset + IP6H_CTL_VFC) * 8 + 4, 8);
proto_item_append_text(ti, " (DSCP: %s, ECN: %s)",
val_to_str_ext_const(IPDSFIELD_DSCP(ip6_tcls), &dscp_short_vals_ext, "Unknown"),
val_to_str_ext_const(IPDSFIELD_ECN(ip6_tcls), &ecn_short_vals_ext, "Unknown"));
pt = proto_item_add_subtree(ti, ett_ipv6_traffic_class);
proto_tree_add_item(pt, hf_ipv6_tclass_dscp, tvb,
offset + IP6H_CTL_VFC, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(pt, hf_ipv6_tclass_ecn, tvb,
offset + IP6H_CTL_VFC, 4, ENC_BIG_ENDIAN);
/* Set DSCP column */
col_add_str(pinfo->cinfo, COL_DSCP_VALUE,
val_to_str_ext(IPDSFIELD_DSCP(ip6_tcls), &dscp_short_vals_ext, "%u"));
proto_tree_add_item_ret_uint(ipv6_tree, hf_ipv6_flow, tvb,
offset + IP6H_CTL_FLOW + 1, 3, ENC_BIG_ENDIAN, &ip6_flow);
ip6_plen = tvb_get_guint16(tvb, offset + IP6H_CTL_PLEN, ENC_BIG_ENDIAN);
ip6_nxt = tvb_get_guint8(tvb, offset + IP6H_CTL_NXT);
if (ipv6_tso_supported && ip6_plen == 0 &&
ip6_nxt != IP_PROTO_HOPOPTS && ip6_nxt != IP_PROTO_NONE) {
ip6_plen = tvb_reported_length(tvb) - IPv6_HDR_SIZE;
pi = proto_tree_add_uint_format_value(ipv6_tree, hf_ipv6_plen, tvb,
offset + IP6H_CTL_PLEN, 2, ip6_plen,
"%u bytes (reported as 0, presumed to be because "
"of \"TCP segmentation offload\" (TSO))",
ip6_plen);
proto_item_set_generated(pi);
} else {
ti_ipv6_plen = proto_tree_add_item(ipv6_tree, hf_ipv6_plen, tvb,
offset + IP6H_CTL_PLEN, 2, ENC_BIG_ENDIAN);
if (ip6_plen == 0 && ip6_nxt != IP_PROTO_HOPOPTS && ip6_nxt != IP_PROTO_NONE) {
expert_add_info(pinfo, ti_ipv6_plen, &ei_ipv6_plen_zero);
}
}
proto_tree_add_item(ipv6_tree, hf_ipv6_nxt, tvb, offset + IP6H_CTL_NXT, 1, ENC_NA);
proto_tree_add_item(ipv6_tree, hf_ipv6_hlim, tvb,
offset + IP6H_CTL_HLIM, 1, ENC_BIG_ENDIAN);
ip6_hlim = tvb_get_guint8(tvb, offset + IP6H_CTL_HLIM);
/* Source address */
add_ipv6_address(pinfo, ipv6_tree, tvb, offset + IP6H_SRC, &ipv6_src_info);
ip6_src = tvb_get_ptr_ipv6(tvb, offset + IP6H_SRC);
alloc_address_wmem_ipv6(pinfo->pool, &pinfo->net_src, ip6_src);
copy_address_shallow(&pinfo->src, &pinfo->net_src);
/* Destination address */
add_ipv6_address(pinfo, ipv6_tree, tvb, offset + IP6H_DST, &ipv6_dst_info);
ip6_dst = tvb_get_ptr_ipv6(tvb, offset + IP6H_DST);
alloc_address_wmem_ipv6(pinfo->pool, &pinfo->net_dst, ip6_dst);
copy_address_shallow(&pinfo->dst, &pinfo->net_dst);
if (tree) {
if (ipv6_summary_in_tree) {
proto_item_append_text(ipv6_item, ", Src: %s, Dst: %s",
address_with_resolution_to_str(pinfo->pool, &pinfo->src),
address_with_resolution_to_str(pinfo->pool, &pinfo->dst));
}
/* Add the different items for the address */
add_ipv6_address_6to4(ipv6_tree, tvb, offset + IP6H_SRC,
hf_ipv6_src_6to4_gateway_ipv4, hf_ipv6_src_6to4_sla_id);
add_ipv6_address_6to4(ipv6_tree, tvb, offset + IP6H_DST,
hf_ipv6_dst_6to4_gateway_ipv4, hf_ipv6_dst_6to4_sla_id);
add_ipv6_address_teredo(ipv6_tree, tvb, offset + IP6H_SRC,
hf_ipv6_src_teredo_server_ipv4, hf_ipv6_src_teredo_port, hf_ipv6_src_teredo_client_ipv4);
add_ipv6_address_teredo(ipv6_tree, tvb, offset + IP6H_DST,
hf_ipv6_dst_teredo_server_ipv4, hf_ipv6_dst_teredo_port, hf_ipv6_dst_teredo_client_ipv4);
add_ipv6_address_slaac(pinfo, ipv6_tree, tvb, offset + IP6H_SRC, hf_ipv6_src_slaac_mac);
add_ipv6_address_slaac(pinfo, ipv6_tree, tvb, offset + IP6H_DST, hf_ipv6_dst_slaac_mac);
add_ipv6_address_isatap(ipv6_tree, tvb, offset + IP6H_SRC, hf_ipv6_src_isatap_ipv4);
add_ipv6_address_isatap(ipv6_tree, tvb, offset + IP6H_DST, hf_ipv6_dst_isatap_ipv4);
add_ipv6_address_embed_ipv4(pinfo, ipv6_tree, tvb, offset + IP6H_SRC, hf_ipv6_src_embed_ipv4);
add_ipv6_address_embed_ipv4(pinfo, ipv6_tree, tvb, offset + IP6H_DST, hf_ipv6_dst_embed_ipv4);
if (ipv6_use_geoip) {
add_geoip_info(ipv6_tree, pinfo, tvb, offset, ip6_src, ip6_dst);
}
}
/* Increment offset to point to next header (may be an extension header) */
offset += IPv6_HDR_SIZE;
/* Check for Jumbo option */
plen = ip6_plen;
if (plen == 0 && ip6_nxt == IP_PROTO_HOPOPTS) {
jumbo_plen = ipv6_get_jumbo_plen(tvb, offset);
if (jumbo_plen != 0) {
proto_item_append_text(ti_ipv6_plen, " (Jumbogram)");
plen = jumbo_plen;
} else {
/* IPv6 length zero is invalid if there is a hop-by-hop header without jumbo option */
col_add_fstr(pinfo->cinfo, COL_INFO, "Invalid IPv6 payload length");
expert_add_info(pinfo, ti_ipv6_plen, &ei_ipv6_opt_jumbo_missing);
}
}
reported_plen = tvb_reported_length(tvb) - IPv6_HDR_SIZE;
if (!pinfo->flags.in_error_pkt && plen > reported_plen) {
expert_add_info_format(pinfo, ti_ipv6_plen, &ei_ipv6_plen_exceeds_framing,
"IPv6 payload length exceeds framing length (%d bytes)", reported_plen);
}
/* Fill in IP header fields for subdissectors */
iph = wmem_new0(pinfo->pool, ws_ip6);
iph->ip6_ver = 6;
iph->ip6_tc = ip6_tcls;
iph->ip6_flw = ip6_flow;
iph->ip6_len = plen;
iph->ip6_nxt = ip6_nxt;
iph->ip6_hop = ip6_hlim;
alloc_address_wmem_ipv6(pinfo->pool, &iph->ip6_src, ip6_src);
alloc_address_wmem_ipv6(pinfo->pool, &iph->ip6_dst, ip6_dst);
/* Shared state between IPv6 header and extensions. */
ipv6_pinfo_t *ipv6_pinfo = wmem_new0(pinfo->pool, ipv6_pinfo_t);
ipv6_pinfo->ip6_plen = ip6_plen;
ipv6_pinfo->jumbo_plen = jumbo_plen;
ipv6_pinfo->frag_plen = ip6_plen; /* updated by extension header dissectors, if any */
if (!ipv6_exthdr_under_root) {
ipv6_pinfo->ipv6_tree = ipv6_tree;
ipv6_pinfo->ipv6_item_len = IPv6_HDR_SIZE;
}
p_add_proto_data(pinfo->pool, pinfo, proto_ipv6, IPV6_PROTO_PINFO, ipv6_pinfo);
/* Adjust the length of this tvbuff to include only the IPv6 datagram. */
set_actual_length(tvb, IPv6_HDR_SIZE + plen);
/* Only export after adjusting the length */
export_pdu(tvb, pinfo);
save_fragmented = pinfo->fragmented;
p_add_ipv6_nxt(pinfo, ip6_nxt);
next_tvb = tvb_new_subset_remaining(tvb, offset);
ipv6_dissect_next(ip6_nxt, next_tvb, pinfo, tree, iph);
pinfo->fragmented = save_fragmented;
return tvb_captured_length(tvb);
}
void
ipv6_dissect_next(guint nxt, tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, ws_ip6 *iph)
{
dissector_handle_t nxt_handle;
ipv6_pinfo_t *ipv6_pinfo = p_get_ipv6_pinfo(pinfo);
/* https://www.iana.org/assignments/ipv6-parameters/ipv6-parameters.xhtml#extension-header */
switch (nxt) {
case IP_PROTO_HOPOPTS:
case IP_PROTO_ROUTING:
case IP_PROTO_FRAGMENT:
//case IP_PROTO_ESP: Even though ESP is technically an extension header,
// we treat it as a payload container.
case IP_PROTO_AH:
case IP_PROTO_DSTOPTS:
case IP_PROTO_MIPV6:
//case IP_PROTO_HIP: Even though HIP is technically an extension header, the only defined
// next header is IP_NONE. Also the HIP dissector is not ready for this.
case IP_PROTO_SHIM6:
nxt_handle = dissector_get_uint_handle(ip_dissector_table, nxt);
break;
default:
nxt_handle = NULL;
break;
}
if (nxt_handle != NULL) {
call_dissector_with_data(nxt_handle, tvb, pinfo, tree, iph);
return;
}
/*
* Done with extension header chain
*/
if (ipv6_pinfo != NULL && ipv6_pinfo->ipv6_tree != NULL) {
/* Set IPv6 Header length */
proto_item_set_len(proto_tree_get_parent(ipv6_pinfo->ipv6_tree), ipv6_pinfo->ipv6_item_len);
ipv6_pinfo->ipv6_tree = NULL;
}
if (iph != NULL && iph->ip6_ver == 6) {
iph->ip6_nxt = nxt; /* upper-layer protocol more useful */
tap_queue_packet(ipv6_tap, pinfo, iph);
}
if (nxt == IP_PROTO_NONE) {
col_set_str(pinfo->cinfo, COL_INFO, "IPv6 no next header");
call_data_dissector(tvb, pinfo, tree);
return;
}
if (ip_try_dissect(try_heuristic_first, nxt, tvb, pinfo, tree, iph)) {
return;
}
/* Unknown protocol. */
col_add_fstr(pinfo->cinfo, COL_INFO, "Unknown IP Protocol: %s (%u)", ipprotostr(nxt), nxt);
call_data_dissector(tvb, pinfo, tree);
}
void
proto_register_ipv6(void)
{
static hf_register_info hf_ipv6[] = {
{ &hf_ipv6_version,
{ "Version", "ipv6.version",
FT_UINT8, BASE_DEC, NULL, 0x00,
NULL, HFILL }
},
{ &hf_ip_version,
{ "Version", "ip.version",
FT_UINT8, BASE_DEC, NULL, 0xF0,
NULL, HFILL }
},
{ &hf_ipv6_tclass,
{ "Traffic Class", "ipv6.tclass",
FT_UINT32, BASE_HEX, NULL, 0x0FF00000,
NULL, HFILL }
},
{ &hf_ipv6_tclass_dscp,
{ "Differentiated Services Codepoint", "ipv6.tclass.dscp",
FT_UINT32, BASE_DEC | BASE_EXT_STRING, &dscp_vals_ext, 0x0FC00000,
NULL, HFILL }
},
{ &hf_ipv6_tclass_ecn,
{ "Explicit Congestion Notification", "ipv6.tclass.ecn",
FT_UINT32, BASE_DEC | BASE_EXT_STRING, &ecn_vals_ext, 0x00300000,
NULL, HFILL }
},
{ &hf_ipv6_flow,
{ "Flow Label", "ipv6.flow",
FT_UINT24, BASE_HEX, NULL, 0x0FFFFF,
NULL, HFILL }
},
{ &hf_ipv6_plen,
{ "Payload Length", "ipv6.plen",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_nxt,
{ "Next Header", "ipv6.nxt",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_hlim,
{ "Hop Limit", "ipv6.hlim",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_src,
{ "Source Address", "ipv6.src",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Source IPv6 Address", HFILL }
},
{ &hf_ipv6_src_addr_space,
{ "Source Address Space", "ipv6.src_addr_space",
FT_STRING, BASE_NONE, NULL, 0x0,
"Source IPv6 Address Space", HFILL }
},
{ &hf_ipv6_src_multicast_flags,
{ "Source Address Multicast Flags", "ipv6.src_multicast_flags",
FT_UINT16, BASE_HEX, NULL, 0x00F0,
NULL, HFILL }
},
{ &hf_ipv6_src_multicast_flags_transient,
{ "Source Address Transient Multicast Flag", "ipv6.src_multicast_flags.transient",
FT_BOOLEAN, 16, NULL, 0x0010,
NULL, HFILL }
},
{ &hf_ipv6_src_multicast_flags_network_prefix,
{ "Source Address Network Prefix Multicast Flag", "ipv6.src_multicast_flags.network_prefix",
FT_BOOLEAN, 16, NULL, 0x0020,
NULL, HFILL }
},
{ &hf_ipv6_src_multicast_flags_embed_rp,
{ "Source Address RP Multicast Flag", "ipv6.src_multicast_flags.embed_rp",
FT_BOOLEAN, 16, NULL, 0x0040,
NULL, HFILL }
},
{ &hf_ipv6_src_multicast_flags_reserved,
{ "Source Address Reserved Multicast Flag", "ipv6.src_multicast_flags.reserved",
FT_UINT16, BASE_DEC, NULL, 0x0080,
NULL, HFILL }
},
{ &hf_ipv6_src_multicast_scope,
{ "Source Address Multicast Scope", "ipv6.src_multicast_scope",
FT_UINT16, BASE_HEX, VALS(ipv6_multicast_scope_vals), 0x000F,
NULL, HFILL }
},
{ &hf_ipv6_src_special_purpose,
{ "Source Address Special-Purpose Allocation", "ipv6.src_special_purpose",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_src_host,
{ "Source Host", "ipv6.src_host",
FT_STRING, BASE_NONE, NULL, 0x0,
"Source IPv6 Host", HFILL }
},
{ &hf_ipv6_src_slaac_mac,
{ "Source SLAAC MAC", "ipv6.src_slaac_mac",
FT_ETHER, BASE_NONE, NULL, 0x0,
"Source IPv6 Stateless Address Autoconfiguration (SLAAC) 48-bit MAC Identifier", HFILL }
},
{ &hf_ipv6_src_isatap_ipv4,
{ "Source ISATAP IPv4", "ipv6.src_isatap_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Source IPv6 ISATAP Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_src_6to4_gateway_ipv4,
{ "Source 6to4 Gateway IPv4", "ipv6.src_6to4_gw_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Source IPv6 6to4 Gateway IPv4 Address", HFILL }
},
{ &hf_ipv6_src_6to4_sla_id,
{ "Source 6to4 SLA ID", "ipv6.src_6to4_sla_id",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Source IPv6 6to4 SLA ID", HFILL }
},
{ &hf_ipv6_src_teredo_server_ipv4,
{ "Source Teredo Server IPv4", "ipv6.src_ts_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Source IPv6 Teredo Server Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_src_teredo_port,
{ "Source Teredo Port", "ipv6.src_tc_port",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Source IPv6 Teredo Client Mapped Port", HFILL }
},
{ &hf_ipv6_src_teredo_client_ipv4,
{ "Source Teredo Client IPv4", "ipv6.src_tc_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Source IPv6 Teredo Client Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_src_embed_ipv4,
{ "Source Embedded IPv4", "ipv6.src_embed_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Source IPv4-Embedded IPv6 Address", HFILL }
},
{ &hf_ipv6_dst,
{ "Destination Address", "ipv6.dst",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Destination IPv6 Address", HFILL }
},
{ &hf_ipv6_dst_addr_space,
{ "Destination Address Space", "ipv6.dst_addr_space",
FT_STRING, BASE_NONE, NULL, 0x0,
"Destination IPv6 Address Space", HFILL }
},
{ &hf_ipv6_dst_multicast_flags,
{ "Destination Address Multicast Flags", "ipv6.dst_multicast_flags",
FT_UINT16, BASE_HEX, NULL, 0x00F0,
NULL, HFILL }
},
{ &hf_ipv6_dst_multicast_flags_transient,
{ "Destination Address Transient Multicast Flag", "ipv6.dst_multicast_flags.transient",
FT_BOOLEAN, 16, NULL, 0x0010,
NULL, HFILL }
},
{ &hf_ipv6_dst_multicast_flags_network_prefix,
{ "Destination Address Network Prefix Multicast Flag", "ipv6.dst_multicast_flags.network_prefix",
FT_BOOLEAN, 16, NULL, 0x0020,
NULL, HFILL }
},
{ &hf_ipv6_dst_multicast_flags_embed_rp,
{ "Destination Address RP Multicast Flag", "ipv6.dst_multicast_flags.embed_rp",
FT_BOOLEAN, 16, NULL, 0x0040,
NULL, HFILL }
},
{ &hf_ipv6_dst_multicast_flags_reserved,
{ "Destination Address Reserved Multicast Flag", "ipv6.dst_multicast_flags.reserved",
FT_UINT16, BASE_DEC, NULL, 0x0080,
NULL, HFILL }
},
{ &hf_ipv6_dst_multicast_scope,
{ "Destination Address Multicast Scope", "ipv6.dst_multicast_scope",
FT_UINT16, BASE_HEX, VALS(ipv6_multicast_scope_vals), 0x000F,
NULL, HFILL }
},
{ &hf_ipv6_dst_special_purpose,
{ "Destination Address Special-Purpose Allocation", "ipv6.dst_special_purpose",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_dst_host,
{ "Destination Host", "ipv6.dst_host",
FT_STRING, BASE_NONE, NULL, 0x0,
"Destination IPv6 Host", HFILL }
},
{ &hf_ipv6_dst_slaac_mac,
{ "Destination SLAAC MAC", "ipv6.dst_slaac_mac",
FT_ETHER, BASE_NONE, NULL, 0x0,
"Destination IPv6 Stateless Address Autoconfiguration (SLAAC) 48-bit MAC Identifier", HFILL }
},
{ &hf_ipv6_dst_isatap_ipv4,
{ "Destination ISATAP IPv4", "ipv6.dst_isatap_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Destination IPv6 ISATAP Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_dst_6to4_gateway_ipv4,
{ "Destination 6to4 Gateway IPv4", "ipv6.dst_6to4_gw_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Destination IPv6 6to4 Gateway IPv4 Address", HFILL }
},
{ &hf_ipv6_dst_6to4_sla_id,
{ "Destination 6to4 SLA ID", "ipv6.dst_6to4_sla_id",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Destination IPv6 6to4 SLA ID", HFILL }
},
{ &hf_ipv6_dst_teredo_server_ipv4,
{ "Destination Teredo Server IPv4", "ipv6.dst_ts_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Destination IPv6 Teredo Server Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_dst_teredo_port,
{ "Destination Teredo Port", "ipv6.dst_tc_port",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Destination IPv6 Teredo Client Mapped Port", HFILL }
},
{ &hf_ipv6_dst_teredo_client_ipv4,
{ "Destination Teredo Client IPv4", "ipv6.dst_tc_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Destination IPv6 Teredo Client Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_dst_embed_ipv4,
{ "Destination Embedded IPv4", "ipv6.dst_embed_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"Destination IPv4-Embedded IPv6 Address", HFILL }
},
{ &hf_ipv6_addr,
{ "Source or Destination Address", "ipv6.addr",
FT_IPv6, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_addr_space,
{ "Source or Destination Address Space", "ipv6.addr_space",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_multicast_flags,
{ "Source or Destination Address Multicast Flags", "ipv6.multicast_flags",
FT_UINT16, BASE_HEX, NULL, 0x00F0,
NULL, HFILL }
},
{ &hf_ipv6_multicast_flags_transient,
{ "Source or Destination Address Transient Multicast Flag", "ipv6.multicast_flags.transient",
FT_BOOLEAN, 16, NULL, 0x0010,
NULL, HFILL }
},
{ &hf_ipv6_multicast_flags_network_prefix,
{ "Source or Destination Address Network Prefix Multicast Flag", "ipv6.multicast_flags.network_prefix",
FT_BOOLEAN, 16, NULL, 0x0020,
NULL, HFILL }
},
{ &hf_ipv6_multicast_flags_embed_rp,
{ "Source or Destination Address RP Multicast Flag", "ipv6.multicast_flags.embed_rp",
FT_BOOLEAN, 16, NULL, 0x0040,
NULL, HFILL }
},
{ &hf_ipv6_multicast_flags_reserved,
{ "Source or Destination Address Reserved Multicast Flag", "ipv6.multicast_flags.reserved",
FT_UINT16, BASE_DEC, NULL, 0x0080,
NULL, HFILL }
},
{ &hf_ipv6_multicast_scope,
{ "Source or Destination Address Multicast Scope", "ipv6.multicast_scope",
FT_UINT16, BASE_HEX, VALS(ipv6_multicast_scope_vals), 0x000F,
NULL, HFILL }
},
{ &hf_ipv6_addr_special_purpose,
{ "Source or Destination Address Special-Purpose Allocation", "ipv6.addr_special_purpose",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_host,
{ "Source or Destination Host", "ipv6.host",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_slaac_mac,
{ "SLAAC MAC", "ipv6.slaac_mac",
FT_ETHER, BASE_NONE, NULL, 0x0,
"IPv6 Stateless Address Autoconfiguration (SLAAC) 48-bit MAC Identifier", HFILL }
},
{ &hf_ipv6_isatap_ipv4,
{ "ISATAP IPv4", "ipv6.isatap_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"IPv6 ISATAP Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_6to4_gateway_ipv4,
{ "6to4 Gateway IPv4", "ipv6.6to4_gw_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"IPv6 6to4 Gateway IPv4 Address", HFILL }
},
{ &hf_ipv6_6to4_sla_id,
{ "6to4 SLA ID", "ipv6.6to4_sla_id",
FT_UINT16, BASE_DEC, NULL, 0x0,
"IPv6 6to4 SLA ID", HFILL }
},
{ &hf_ipv6_teredo_server_ipv4,
{ "Teredo Server IPv4", "ipv6.ts_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"IPv6 Teredo Server Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_teredo_port,
{ "Teredo Port", "ipv6.tc_port",
FT_UINT16, BASE_DEC, NULL, 0x0,
"IPv6 Teredo Client Mapped Port", HFILL }
},
{ &hf_ipv6_teredo_client_ipv4,
{ "Teredo Client IPv4", "ipv6.tc_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"IPv6 Teredo Client Encapsulated IPv4 Address", HFILL }
},
{ &hf_ipv6_embed_ipv4_prefix,
{ "Embedded IPv4 Prefix", "ipv6.embed_ipv4_prefix",
FT_BYTES, BASE_NONE, NULL, 0x0,
"IPv4-Embedded IPv6 Address Prefix", HFILL }
},
{ &hf_ipv6_embed_ipv4,
{ "Embedded IPv4", "ipv6.embed_ipv4",
FT_IPv4, BASE_NONE, NULL, 0x0,
"IPv4-Embedded IPv6 Address", HFILL }
},
{ &hf_ipv6_embed_ipv4_u,
{ "Embedded IPv4 u field", "ipv6.embed_ipv4_u",
FT_BYTES, BASE_NONE, NULL, 0x0,
"IPv4-Embedded IPv6 Address u field", HFILL }
},
{ &hf_ipv6_embed_ipv4_suffix,
{ "Embedded IPv4 Suffix", "ipv6.embed_ipv4_suffix",
FT_BYTES, BASE_NONE, NULL, 0x0,
"IPv4-Embedded IPv6 Address Suffix", HFILL }
},
{ &hf_geoip_country,
{ "Source or Destination GeoIP Country", "ipv6.geoip.country",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_country_iso,
{ "Source or Destination GeoIP ISO Two Letter Country Code", "ipv6.geoip.country_iso",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_city,
{ "Source or Destination GeoIP City", "ipv6.geoip.city",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_as_number,
{ "Source or Destination GeoIP AS Number", "ipv6.geoip.asnum",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_as_org,
{ "Source or Destination GeoIP AS Organization", "ipv6.geoip.org",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_latitude,
{ "Source or Destination GeoIP Latitude", "ipv6.geoip.lat",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_longitude,
{ "Source or Destination GeoIP Longitude", "ipv6.geoip.lon",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_summary,
{ "Source GeoIP", "ipv6.geoip.src_summary",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_country,
{ "Source GeoIP Country", "ipv6.geoip.src_country",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_country_iso,
{ "Source GeoIP ISO Two Letter Country Code", "ipv6.geoip.src_country_iso",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_city,
{ "Source GeoIP City", "ipv6.geoip.src_city",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_as_number,
{ "Source GeoIP AS Number", "ipv6.geoip.src_asnum",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_as_org,
{ "Source GeoIP AS Organization", "ipv6.geoip.src_org",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_latitude,
{ "Source GeoIP Latitude", "ipv6.geoip.src_lat",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_longitude,
{ "Source GeoIP Longitude", "ipv6.geoip.src_lon",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_summary,
{ "Destination GeoIP", "ipv6.geoip.dst_summary",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_country,
{ "Destination GeoIP Country", "ipv6.geoip.dst_country",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_country_iso,
{ "Destination GeoIP ISO Two Letter Country Code", "ipv6.geoip.dst_country_iso",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_city,
{ "Destination GeoIP City", "ipv6.geoip.dst_city",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_as_number,
{ "Destination GeoIP AS Number", "ipv6.geoip.dst_asnum",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_as_org,
{ "Destination GeoIP AS Organization", "ipv6.geoip.dst_org",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_latitude,
{ "Destination GeoIP Latitude", "ipv6.geoip.dst_lat",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_longitude,
{ "Destination GeoIP Longitude", "ipv6.geoip.dst_lon",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt,
{ "IPv6 Option", "ipv6.opt",
FT_NONE, BASE_NONE, NULL, 0x0,
"Option", HFILL }
},
{ &hf_ipv6_opt_type,
{ "Type", "ipv6.opt.type",
FT_UINT8, BASE_HEX | BASE_EXT_STRING, &ipv6_opt_type_vals_ext, 0x0,
"Option type", HFILL }
},
{ &hf_ipv6_opt_type_action,
{ "Action", "ipv6.opt.type.action",
FT_UINT8, BASE_DEC, VALS(ipv6_opt_type_action_vals), 0xC0,
"Action for unrecognized option type", HFILL }
},
{ &hf_ipv6_opt_type_change,
{ "May Change", "ipv6.opt.type.change",
FT_BOOLEAN, 8, TFS(&tfs_yes_no), 0x20,
"Whether the option data may change en-route", HFILL }
},
{ &hf_ipv6_opt_type_rest,
{ "Low-Order Bits", "ipv6.opt.type.rest",
FT_UINT8, BASE_HEX, NULL, 0x1F,
"Remaining low-order bits", HFILL }
},
{ &hf_ipv6_opt_length,
{ "Length", "ipv6.opt.length",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Option length in octets", HFILL }
},
{ &hf_ipv6_opt_pad1,
{ "Pad1", "ipv6.opt.pad1",
FT_NONE, BASE_NONE, NULL, 0x0,
"Pad1 Option", HFILL }
},
{ &hf_ipv6_opt_padn,
{ "PadN", "ipv6.opt.padn",
FT_BYTES, BASE_NONE|BASE_ALLOW_ZERO, NULL, 0x0,
"PadN Option", HFILL }
},
{ &hf_ipv6_opt_pmtu_min,
{ "Minimum Reported PMTU", "ipv6.opt.pmtu.min",
FT_UINT16, BASE_DEC, NULL, 0x0,
"The minimum reported PMTU in octets", HFILL }
},
{ &hf_ipv6_opt_pmtu_rtn,
{ "Return Minimum PMTU", "ipv6.opt.pmtu.rtn",
FT_UINT16, BASE_DEC, NULL, 0x0,
"The Return Min-PMTU in octets", HFILL }
},
{ &hf_ipv6_opt_pmtu_rtn_flag,
{ "Return Flag", "ipv6.opt.pmtu.r_flag",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Destination should include the received reported PMTU", HFILL }
},
{ &hf_ipv6_opt_apn_id_type,
{ "ID Type", "ipv6.opt.apn.id.type",
FT_UINT8, BASE_DEC, VALS(apn_id_type_strs), 0x0,
"The type of the APN ID", HFILL }
},
{ &hf_ipv6_opt_apn_flags,
{ "Flags", "ipv6.opt.apn.flags",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Flags for advanced processing", HFILL }
},
{ &hf_ipv6_opt_apn_param_type,
{ "Parameters Types", "ipv6.opt.apn.param.type",
FT_UINT16, BASE_HEX, NULL, 0x0,
"Bitmap to identify the existence of APN Parameters", HFILL }
},
{ &hf_ipv6_opt_apn_id_part1,
{ "ID Part1", "ipv6.opt.apn.id.part1",
FT_UINT32, BASE_HEX, NULL, 0x0,
"The first 32-bit of the APN ID", HFILL }
},
{ &hf_ipv6_opt_apn_id_part2,
{ "ID Part2", "ipv6.opt.apn.id.part2",
FT_UINT32, BASE_HEX, NULL, 0x0,
"The second 32-bit of the APN ID", HFILL }
},
{ &hf_ipv6_opt_apn_id_part3,
{ "ID Part3", "ipv6.opt.apn.id.part3",
FT_UINT32, BASE_HEX, NULL, 0x0,
"The third 32-bit of the APN ID", HFILL }
},
{ &hf_ipv6_opt_apn_id_part4,
{ "ID Part4", "ipv6.opt.apn.id.part4",
FT_UINT32, BASE_HEX, NULL, 0x0,
"The last 32-bit of the APN ID", HFILL }
},
{ &hf_ipv6_opt_rtalert,
{ "Router Alert", "ipv6.opt.router_alert",
FT_UINT16, BASE_DEC, VALS(ipv6_opt_rtalert_vals), 0x0,
"Router Alert Option", HFILL }
},
{ &hf_ipv6_opt_tel,
{ "Tunnel Encapsulation Limit", "ipv6.opt.tel",
FT_UINT8, BASE_DEC, NULL, 0x0,
"How many further levels of encapsulation are permitted", HFILL }
},
{ &hf_ipv6_opt_jumbo,
{ "Payload Length", "ipv6.opt.jumbo",
FT_UINT32, BASE_DEC, NULL, 0x0,
"IPv6 (Jumbo) Payload Length", HFILL }
},
{ &hf_ipv6_opt_calipso_doi,
{ "CALIPSO Domain of Interpretation", "ipv6.opt.calipso.doi",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_calipso_cmpt_length,
{ "Compartment Length", "ipv6.opt.calipso.cmpt.length",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_calipso_sens_level,
{ "Sensitivity Level", "ipv6.opt.calipso.sens_level",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_calipso_checksum,
{ "Checksum", "ipv6.opt.calipso.checksum",
FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_calipso_cmpt_bitmap,
{ "Compartment Bitmap", "ipv6.opt.calipso.cmpt_bitmap",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_smf_dpd_hash_bit,
{ "H-bit", "ipv6.opt.smf_dpd.hash_bit",
FT_BOOLEAN, 8, NULL, 0x80,
"Hash indicator", HFILL }
},
{ &hf_ipv6_opt_smf_dpd_tid_type,
{ "TaggerID Type", "ipv6.opt.smf_dpd.tid_type",
FT_UINT8, BASE_DEC, VALS(ipv6_opt_smf_dpd_tidty_vals), 0x70,
NULL, HFILL }
},
{ &hf_ipv6_opt_smf_dpd_tid_len,
{ "TaggerID Length", "ipv6.opt.smf_dpd.tid_len",
FT_UINT8, BASE_DEC, NULL, 0x0F,
NULL, HFILL }
},
{ &hf_ipv6_opt_smf_dpd_tagger_id,
{ "TaggerID", "ipv6.opt.smf_dpd.tagger_id",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_smf_dpd_ident,
{ "Identifier", "ipv6.opt.smf_dpd.ident",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_smf_dpd_hav,
{ "Hash Assist Value", "ipv6.opt.smf_dpd.hav",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_pdm_scale_dtlr,
{ "Scale DTLR", "ipv6.opt.pdm.scale_dtlr",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Scale for Delta Time Last Received", HFILL }
},
{ &hf_ipv6_opt_pdm_scale_dtls,
{ "Scale DTLS", "ipv6.opt.pdm.scale_dtls",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Scale for Delta Time Last Sent", HFILL }
},
{ &hf_ipv6_opt_pdm_psn_this_pkt,
{ "PSN This Packet", "ipv6.opt.pdm.psn_this_pkt",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Packet Sequence Number This Packet", HFILL }
},
{ &hf_ipv6_opt_pdm_psn_last_recv,
{ "PSN Last Received", "ipv6.opt.pdm.psn_last_recv",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Packet Sequence Number Last Received", HFILL }
},
{ &hf_ipv6_opt_pdm_delta_last_recv,
{ "Delta Time Last Received", "ipv6.opt.pdm.delta_last_recv",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_pdm_delta_last_sent,
{ "Delta Time Last Sent", "ipv6.opt.pdm.delta_last_sent",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_func,
{ "Function", "ipv6.opt.qs_func",
FT_UINT8, BASE_DEC, VALS(qs_func_vals), QS_FUNC_MASK,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_rate,
{ "Rate", "ipv6.opt.qs_rate",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &qs_rate_vals_ext, QS_RATE_MASK,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_ttl,
{ "QS TTL", "ipv6.opt.qs_ttl",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_ttl_diff,
{ "TTL Diff", "ipv6.opt.qs_ttl_diff",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_unused,
{ "Not Used", "ipv6.opt.qs_unused",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_nonce,
{ "QS Nonce", "ipv6.opt.qs_nonce",
FT_UINT32, BASE_HEX, NULL, 0xFFFFFFFC,
NULL, HFILL }
},
{ &hf_ipv6_opt_qs_reserved,
{ "Reserved", "ipv6.opt.qs_reserved",
FT_UINT32, BASE_HEX, NULL, 0x0003,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_rsv,
{ "Reserved", "ipv6.opt.ioam.rsv",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Reserved (must be zero)", HFILL }
},
{ &hf_ipv6_opt_ioam_opt_type,
{ "Option-Type", "ipv6.opt.ioam.opt_type",
FT_UINT8, BASE_DEC, VALS(ipv6_ioam_opt_types), 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_ns,
{ "Namespace ID", "ipv6.opt.ioam.trace.ns",
FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_nodelen,
{ "Node Length", "ipv6.opt.ioam.trace.nodelen",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_flags,
{ "Flags", "ipv6.opt.ioam.trace.flags",
FT_UINT16, BASE_HEX, NULL, 0x0780,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_flag_o,
{ "Overflow", "ipv6.opt.ioam.trace.flag.o",
FT_BOOLEAN, 16, NULL, 0x0400,
"Not enough free space", HFILL }
},
{ &hf_ipv6_opt_ioam_trace_flag_l,
{ "Loopback", "ipv6.opt.ioam.trace.flag.l",
FT_BOOLEAN, 16, NULL, 0x0200,
"Send a copy of the packet back towards the source", HFILL }
},
{ &hf_ipv6_opt_ioam_trace_flag_a,
{ "Active", "ipv6.opt.ioam.trace.flag.a",
FT_BOOLEAN, 16, NULL, 0x0100,
"Active measurement packet", HFILL }
},
{ &hf_ipv6_opt_ioam_trace_flag_rsv,
{ "Reserved", "ipv6.opt.ioam.trace.flag.rsv",
FT_BOOLEAN, 16, NULL, 0x0080,
"Reserved (must be zero)", HFILL }
},
{ &hf_ipv6_opt_ioam_trace_remlen,
{ "Remaining Length", "ipv6.opt.ioam.trace.remlen",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type,
{ "Trace Type", "ipv6.opt.ioam.trace.type",
FT_UINT24, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit0,
{ "Hop_Lim and Node ID (short)", "ipv6.opt.ioam.trace.type.bit0",
FT_BOOLEAN, 24, NULL, 0x800000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit1,
{ "Ingress and Egress IDs (short)", "ipv6.opt.ioam.trace.type.bit1",
FT_BOOLEAN, 24, NULL, 0x400000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit2,
{ "Timestamp seconds", "ipv6.opt.ioam.trace.type.bit2",
FT_BOOLEAN, 24, NULL, 0x200000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit3,
{ "Timestamp fraction", "ipv6.opt.ioam.trace.type.bit3",
FT_BOOLEAN, 24, NULL, 0x100000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit4,
{ "Transit delay", "ipv6.opt.ioam.trace.type.bit4",
FT_BOOLEAN, 24, NULL, 0x080000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit5,
{ "IOAM-Namespace specific data (short)", "ipv6.opt.ioam.trace.type.bit5",
FT_BOOLEAN, 24, NULL, 0x040000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit6,
{ "Queue depth", "ipv6.opt.ioam.trace.type.bit6",
FT_BOOLEAN, 24, NULL, 0x020000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit7,
{ "Checksum complement", "ipv6.opt.ioam.trace.type.bit7",
FT_BOOLEAN, 24, NULL, 0x010000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit8,
{ "Hop_Lim and Node ID (wide)", "ipv6.opt.ioam.trace.type.bit8",
FT_BOOLEAN, 24, NULL, 0x008000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit9,
{ "Ingress and Egress IDs (wide)", "ipv6.opt.ioam.trace.type.bit9",
FT_BOOLEAN, 24, NULL, 0x004000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit10,
{ "IOAM-Namespace specific data (wide)", "ipv6.opt.ioam.trace.type.bit10",
FT_BOOLEAN, 24, NULL, 0x002000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit11,
{ "Buffer occupancy", "ipv6.opt.ioam.trace.type.bit11",
FT_BOOLEAN, 24, NULL, 0x001000,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_undef,
{ "Undefined", "ipv6.opt.ioam.trace.type.undef",
FT_BOOLEAN, 24, NULL, 0x000ffc,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_bit22,
{ "Opaque State Snapshot", "ipv6.opt.ioam.trace.type.bit22",
FT_BOOLEAN, 24, NULL, 0x000002,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_type_rsv,
{ "Reserved", "ipv6.opt.ioam.trace.type.rsv",
FT_BOOLEAN, 24, NULL, 0x000001,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_rsv,
{ "Reserved", "ipv6.opt.ioam.trace.rsv",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Reserved (must be zero)", HFILL }
},
{ &hf_ipv6_opt_ioam_trace_free_space,
{ "Free space", "ipv6.opt.ioam.trace.free_space",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_hlim,
{ "Hop Limit", "ipv6.opt.ioam.trace.node.hlim",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_id,
{ "ID", "ipv6.opt.ioam.trace.node.id",
FT_UINT24, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_iif,
{ "Ingress ID", "ipv6.opt.ioam.trace.node.iif",
FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_eif,
{ "Egress ID", "ipv6.opt.ioam.trace.node.eif",
FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_tss,
{ "Timestamp Seconds", "ipv6.opt.ioam.trace.node.tss",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_tsf,
{ "Timestamp Fraction", "ipv6.opt.ioam.trace.node.tsf",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_trdelay,
{ "Transit Delay", "ipv6.opt.ioam.trace.node.trdelay",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_nsdata,
{ "Namespace Data (short)", "ipv6.opt.ioam.trace.node.nsdata",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_qdepth,
{ "Queue Depth", "ipv6.opt.ioam.trace.node.qdepth",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_csum,
{ "Checksum Complement", "ipv6.opt.ioam.trace.node.csum",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_id_wide,
{ "ID", "ipv6.opt.ioam.trace.node.id_wide",
FT_UINT56, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_iif_wide,
{ "Ingress ID", "ipv6.opt.ioam.trace.node.iif_wide",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_eif_wide,
{ "Egress ID", "ipv6.opt.ioam.trace.node.eif_wide",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_nsdata_wide,
{ "Namespace Data (wide)", "ipv6.opt.ioam.trace.node.nsdata_wide",
FT_UINT64, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_bufoccup,
{ "Buffer Occupancy", "ipv6.opt.ioam.trace.node.bufoccup",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_undefined,
{ "Undefined bit", "ipv6.opt.ioam.trace.node.undefined",
FT_UINT32, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_oss_len,
{ "Length", "ipv6.opt.ioam.trace.node.oss.len",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_oss_scid,
{ "Schema ID", "ipv6.opt.ioam.trace.node.oss.scid",
FT_UINT24, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_ioam_trace_node_oss_data,
{ "Data", "ipv6.opt.ioam.trace.node.oss.data",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_tpf_information,
{ "TPF Information", "ipv6.opt.tpf_information",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Tunnel Payload Forwarding Information", HFILL }
},
{ &hf_ipv6_opt_mipv6_home_address,
{ "MIPv6 Home Address", "ipv6.opt.mipv6.home_address",
FT_IPv6, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_rpl_flag,
{ "Flag", "ipv6.opt.rpl.flag",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_rpl_flag_o,
{ "Down", "ipv6.opt.rpl.flag.o",
FT_BOOLEAN, 8, NULL, 0x80,
"The packet is expected to progress Up or Down", HFILL }
},
{ &hf_ipv6_opt_rpl_flag_r,
{ "Rank Error", "ipv6.opt.rpl.flag.r",
FT_BOOLEAN, 8, NULL, 0x40,
"Whether a rank error was detected", HFILL }
},
{ &hf_ipv6_opt_rpl_flag_f,
{ "Forwarding Error", "ipv6.opt.rpl.flag.f",
FT_BOOLEAN, 8, NULL, 0x20,
"Set if the node cannot forward the packet further towards the destination", HFILL }
},
{ &hf_ipv6_opt_rpl_flag_rsv,
{ "Reserved", "ipv6.opt.rpl.flag.rsv",
FT_UINT8, BASE_HEX, NULL, 0x1F,
"Reserved (must be zero)", HFILL }
},
{ &hf_ipv6_opt_rpl_instance_id,
{ "RPLInstanceID", "ipv6.opt.rpl.instance_id",
FT_UINT8, BASE_HEX, NULL, 0x0,
"The DODAG instance along which the packet is sent", HFILL }
},
{ &hf_ipv6_opt_rpl_senderrank,
{ "Sender Rank", "ipv6.opt.rpl.sender_rank",
FT_UINT16, BASE_HEX, NULL, 0x0,
"Set to zero by the source and to DAGRank(rank) by a router that forwards inside the RPL network", HFILL }
},
{ &hf_ipv6_opt_ilnp_nonce,
{ "ILNP Nonce", "ipv6.opt.ilnp_nonce",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_lio_len,
{ "LineIDLen", "ipv6.opt.lio.length",
FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_lio_id,
{ "Line ID", "ipv6.opt.lio.line_id",
FT_STRING, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_mpl_flag,
{ "Flag", "ipv6.opt.mpl.flag",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_mpl_flag_s,
{ "Seed ID Length", "ipv6.opt.mpl.flag.s",
FT_UINT8, BASE_DEC, VALS(mpl_seed_id_len_vals), 0xC0,
"Identifies the length of Seed ID", HFILL }
},
{ &hf_ipv6_opt_mpl_flag_m,
{ "Largest Sequence", "ipv6.opt.mpl.flag.m",
FT_BOOLEAN, 8, NULL, 0x20,
"Indicates Sequence is known to be the largest sequence number", HFILL }
},
{ &hf_ipv6_opt_mpl_flag_v,
{ "Version", "ipv6.opt.mpl.flag.v",
FT_BOOLEAN, 8, NULL, 0x10,
"0 indicates this option conforms to RFC<TBC>", HFILL }
},
{ &hf_ipv6_opt_mpl_flag_rsv,
{ "Reserved", "ipv6.opt.mpl.flag.rsv",
FT_UINT8, BASE_HEX, NULL, 0x0F,
"Reserved (must be zero)", HFILL }
},
{ &hf_ipv6_opt_mpl_sequence,
{ "Sequence", "ipv6.opt.mpl.sequence",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Identifies relative ordering of MPL Data Messages from the MPL Seed identified by Seed ID", HFILL }
},
{ &hf_ipv6_opt_mpl_seed_id,
{ "Seed ID", "ipv6.opt.mpl.seed_id",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Uniquely identifies the MPL Seed that initiated dissemination of the MPL Data Message", HFILL }
},
{ &hf_ipv6_opt_dff_flags,
{ "Flags", "ipv6.opt.dff.flags",
FT_UINT8, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_dff_flag_ver,
{ "Version (VER)", "ipv6.opt.dff.flag.ver",
FT_UINT8, BASE_DEC, NULL, 0xC0,
"The version of DFF that is used", HFILL }
},
{ &hf_ipv6_opt_dff_flag_dup,
{ "Duplicate (DUP)", "ipv6.opt.dff.flag.dup",
FT_BOOLEAN, 8, NULL, 0x20,
"Indicates the packet is being retransmitted", HFILL }
},
{ &hf_ipv6_opt_dff_flag_ret,
{ "Return (RET)", "ipv6.opt.dff.flag.ret",
FT_BOOLEAN, 8, NULL, 0x10,
"Must be set to 1 prior to sending the packet back to the Previous Hop", HFILL }
},
{ &hf_ipv6_opt_dff_flag_rsv,
{ "Reserved", "ipv6.opt.dff.flag.rsv",
FT_UINT8, BASE_HEX, NULL, 0x0F,
"Reserved (must be zero)", HFILL }
},
{ &hf_ipv6_opt_dff_seqnum,
{ "Sequence Number", "ipv6.opt.dff.sequence_number",
FT_UINT16, BASE_DEC_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_experimental,
{ "Experimental Option", "ipv6.opt.experimental",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_opt_unknown_data,
{ "Unknown Data", "ipv6.opt_unknown_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Not interpreted data", HFILL }
},
{ &hf_ipv6_opt_unknown,
{ "Unknown Option Payload", "ipv6.opt.unknown",
FT_BYTES, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_fragment,
{ "IPv6 Fragment", "ipv6.fragment",
FT_FRAMENUM, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_fragment_overlap,
{ "Fragment overlap", "ipv6.fragment.overlap",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Fragment overlaps with other fragments", HFILL }
},
{ &hf_ipv6_fragment_overlap_conflict,
{ "Conflicting data in fragment overlap", "ipv6.fragment.overlap.conflict",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Overlapping fragments contained conflicting data", HFILL }
},
{ &hf_ipv6_fragment_multiple_tails,
{ "Multiple tail fragments found", "ipv6.fragment.multipletails",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Several tails were found when defragmenting the packet", HFILL }
},
{ &hf_ipv6_fragment_too_long_fragment,
{ "Fragment too long", "ipv6.fragment.toolongfragment",
FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"Fragment contained data past end of packet", HFILL }
},
{ &hf_ipv6_fragment_error,
{ "Defragmentation error", "ipv6.fragment.error",
FT_FRAMENUM, BASE_NONE, NULL, 0x0,
"Defragmentation error due to illegal fragments", HFILL }
},
{ &hf_ipv6_fragment_count,
{ "Fragment count", "ipv6.fragment.count",
FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_fragments,
{ "IPv6 Fragments", "ipv6.fragments",
FT_NONE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_reassembled_in,
{ "Reassembled IPv6 in frame", "ipv6.reassembled.in",
FT_FRAMENUM, BASE_NONE, NULL, 0x0,
"This IPv6 packet is reassembled in this frame", HFILL }
},
{ &hf_ipv6_reassembled_length,
{ "Reassembled IPv6 length", "ipv6.reassembled.length",
FT_UINT32, BASE_DEC, NULL, 0x0,
"The total length of the reassembled payload", HFILL }
},
{ &hf_ipv6_reassembled_data,
{ "Reassembled IPv6 data", "ipv6.reassembled.data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"The reassembled payload", HFILL }
}
};
static hf_register_info hf_ipv6_hopopts[] = {
{ &hf_ipv6_hopopts_nxt,
{ "Next Header", "ipv6.hopopts.nxt",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_hopopts_len,
{ "Length", "ipv6.hopopts.len",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Extension header length in 8-octet words (minus 1)", HFILL }
},
{ &hf_ipv6_hopopts_len_oct,
{ "Length", "ipv6.hopopts.len_oct",
FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_byte_bytes, 0x0,
"Extension header length in octets", HFILL }
}
};
static hf_register_info hf_ipv6_dstopts[] = {
{ &hf_ipv6_dstopts_nxt,
{ "Next Header", "ipv6.dstopts.nxt",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_dstopts_len,
{ "Length", "ipv6.dstopts.len",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Extension header length in 8-octet words (minus 1)", HFILL }
},
{ &hf_ipv6_dstopts_len_oct,
{ "Length", "ipv6.dstopts.len_oct",
FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_byte_bytes, 0x0,
"Extension header length in octets", HFILL }
}
};
static hf_register_info hf_ipv6_routing[] = {
/* IPv6 Routing Header */
{ &hf_ipv6_routing_nxt,
{ "Next Header", "ipv6.routing.nxt",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_routing_len,
{ "Length", "ipv6.routing.len",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Extension header length in 8-octet words (minus 1)", HFILL }
},
{ &hf_ipv6_routing_len_oct,
{ "Length", "ipv6.routing.len_oct",
FT_UINT16, BASE_DEC|BASE_UNIT_STRING, &units_byte_bytes, 0x0,
"Extension header length in octets", HFILL }
},
{ &hf_ipv6_routing_type,
{ "Type", "ipv6.routing.type",
FT_UINT8, BASE_DEC, VALS(routing_header_type), 0x0,
"Routing Header Type", HFILL }
},
{ &hf_ipv6_routing_segleft,
{ "Segments Left", "ipv6.routing.segleft",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Routing Header Segments Left", HFILL }
},
{ &hf_ipv6_routing_unknown_data,
{ "Type-Specific Data", "ipv6.routing.unknown_data",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Unknown routing header type-specific data", HFILL }
},
/* Source Routing Header */
{ &hf_ipv6_routing_src_reserved,
{ "Reserved", "ipv6.routing.src.reserved",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Must be zero", HFILL }
},
{ &hf_ipv6_routing_src_addr,
{ "Address", "ipv6.routing.src.addr",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Source Routing Header Address", HFILL }},
/* Mobile IPv6 */
{ &hf_ipv6_routing_mipv6_reserved,
{ "Reserved", "ipv6.routing.mipv6.reserved",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Must be zero", HFILL }
},
{ &hf_ipv6_routing_mipv6_home_address,
{ "Home Address", "ipv6.routing.mipv6.home_address",
FT_IPv6, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
/* RPL Routing Header */
{ &hf_ipv6_routing_rpl_cmprI,
{ "Compressed Internal Octets (CmprI)", "ipv6.routing.rpl.cmprI",
FT_UINT32, BASE_DEC, NULL, IP6RRPL_BITMASK_CMPRI,
"Elided octets from all but last segment", HFILL }
},
{ &hf_ipv6_routing_rpl_cmprE,
{ "Compressed Final Octets (CmprE)", "ipv6.routing.rpl.cmprE",
FT_UINT32, BASE_DEC, NULL, IP6RRPL_BITMASK_CMPRE,
"Elided octets from last segment address", HFILL }
},
{ &hf_ipv6_routing_rpl_pad,
{ "Padding Bytes", "ipv6.routing.rpl.pad",
FT_UINT32, BASE_DEC, NULL, IP6RRPL_BITMASK_PAD,
NULL, HFILL }
},
{ &hf_ipv6_routing_rpl_reserved,
{ "Reserved", "ipv6.routing.rpl.reserved",
FT_UINT32, BASE_DEC, NULL, IP6RRPL_BITMASK_RESERVED,
"Must be zero", HFILL }
},
{ &hf_ipv6_routing_rpl_addr_count,
{ "Total Address Count", "ipv6.routing.rpl.addr_count",
FT_INT32, BASE_DEC, NULL, 0,
NULL, HFILL }
},
{ &hf_ipv6_routing_rpl_addr,
{ "Address", "ipv6.routing.rpl.address",
FT_BYTES, BASE_NONE, NULL, 0,
NULL, HFILL }
},
{ &hf_ipv6_routing_rpl_fulladdr,
{ "Full Address", "ipv6.routing.rpl.full_address",
FT_IPv6, BASE_NONE, NULL, 0,
"Uncompressed IPv6 Address", HFILL }
},
/* Segment Routing Header */
{ &hf_ipv6_routing_srh_last_entry,
{ "Last Entry", "ipv6.routing.srh.last_entry",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Index (zero based) of the last element of the Segment List", HFILL }
},
{ &hf_ipv6_routing_srh_flags,
{ "Flags", "ipv6.routing.srh.flags",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Unused, 8 bits of flags", HFILL }
},
{ &hf_ipv6_routing_srh_tag,
{ "Tag", "ipv6.routing.srh.tag",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Tag a packet as part of a class or group of packets", HFILL }
},
{ &hf_ipv6_routing_srh_addr,
{ "Address", "ipv6.routing.srh.addr",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Segment address", HFILL }
},
/* Compact Routing Header */
{ &hf_ipv6_routing_crh16_current_sid,
{ "Current SID", "ipv6.routing.crh16.current_sid",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Value of the current Segment ID", HFILL }
},
{ &hf_ipv6_routing_crh32_current_sid,
{ "Current SID", "ipv6.routing.crh32.current_sid",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Value of the current Segment ID", HFILL }
},
{ &hf_ipv6_routing_crh16_segment_id,
{ "Segment ID", "ipv6.routing.crh16.sid",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Segment address", HFILL }
},
{ &hf_ipv6_routing_crh32_segment_id,
{ "Segment ID", "ipv6.routing.crh32.sid",
FT_UINT32, BASE_DEC, NULL, 0x0,
"Segment address", HFILL }
}
};
static hf_register_info hf_ipv6_fraghdr[] = {
{ &hf_ipv6_fraghdr_nxt,
{ "Next header", "ipv6.fraghdr.nxt",
FT_UINT8, BASE_DEC | BASE_EXT_STRING, &ipproto_val_ext, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_fraghdr_reserved_octet,
{ "Reserved octet", "ipv6.fraghdr.reserved_octet",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Should always be 0", HFILL }
},
{ &hf_ipv6_fraghdr_offset,
{ "Offset", "ipv6.fraghdr.offset",
FT_UINT16, BASE_DEC, NULL, IP6F_OFF_MASK,
"Fragment Offset", HFILL }
},
{ &hf_ipv6_fraghdr_reserved_bits,
{ "Reserved bits", "ipv6.fraghdr.reserved_bits",
FT_UINT16, BASE_DEC, NULL, IP6F_RESERVED_MASK,
NULL, HFILL }
},
{ &hf_ipv6_fraghdr_more,
{ "More Fragments", "ipv6.fraghdr.more",
FT_BOOLEAN, 16, TFS(&tfs_yes_no), IP6F_MORE_FRAG,
NULL, HFILL }
},
{ &hf_ipv6_fraghdr_ident,
{ "Identification", "ipv6.fraghdr.ident",
FT_UINT32, BASE_HEX, NULL, 0x0,
"Fragment Identification", HFILL }
}
};
static gint *ett_ipv6[] = {
&ett_ipv6_proto,
&ett_ipv6_detail,
&ett_ipv6_multicast_flags,
&ett_ipv6_traffic_class,
&ett_geoip_info,
&ett_ipv6_opt,
&ett_ipv6_opt_type,
&ett_ipv6_opt_rpl,
&ett_ipv6_opt_mpl,
&ett_ipv6_opt_dff_flags,
&ett_ipv6_opt_ioam_trace_flags,
&ett_ipv6_opt_ioam_trace_types,
&ett_ipv6_fragment,
&ett_ipv6_fragments
};
static gint *ett_ipv6_hopopts[] = {
&ett_ipv6_hopopts_proto
};
static gint *ett_ipv6_routing[] = {
&ett_ipv6_routing_proto,
&ett_ipv6_routing_srh_vect
};
static gint *ett_ipv6_fraghdr[] = {
&ett_ipv6_fraghdr_proto
};
static gint *ett_ipv6_dstopts[] = {
&ett_ipv6_dstopts_proto
};
static ei_register_info ei_ipv6[] = {
{ &ei_ipv6_opt_jumbo_missing,
{ "ipv6.opt.jumbo.missing", PI_MALFORMED, PI_ERROR,
"IPv6 payload length equals 0 and Hop-By-Hop present and Jumbo Payload option missing", EXPFILL }
},
{ &ei_ipv6_opt_jumbo_prohibited,
{ "ipv6.opt.jumbo.prohibited", PI_PROTOCOL, PI_WARN,
"When IPv6 payload length does not equal 0 a Jumbo Payload option must not be present", EXPFILL }
},
{ &ei_ipv6_opt_jumbo_truncated,
{ "ipv6.opt.jumbo.truncated", PI_PROTOCOL, PI_WARN,
"Jumbo Payload option present and jumbo length < 65536", EXPFILL }
},
{ &ei_ipv6_opt_jumbo_fragment,
{ "ipv6.opt.jumbo.fragment", PI_PROTOCOL, PI_WARN,
"Jumbo Payload option cannot be used with a fragment header", EXPFILL }
},
{ &ei_ipv6_opt_invalid_len,
{ "ipv6.opt.invalid_len", PI_MALFORMED, PI_ERROR,
"Invalid IPv6 option length", EXPFILL }
},
{ &ei_ipv6_opt_apn_invalid_id_type,
{ "ipv6.opt.apn.invalid.id_type", PI_MALFORMED, PI_ERROR,
"Invalid APN ID Type", EXPFILL }
},
{ &ei_ipv6_opt_unknown_data,
{ "ipv6.opt.unknown_data.expert", PI_UNDECODED, PI_NOTE,
"Unknown Data (not interpreted)", EXPFILL }
},
{ &ei_ipv6_plen_exceeds_framing,
{ "ipv6.plen_exceeds_framing", PI_PROTOCOL, PI_WARN,
"IPv6 payload length does not match expected framing length", EXPFILL }
},
{ &ei_ipv6_plen_zero,
{ "ipv6.plen_zero", PI_PROTOCOL, PI_CHAT,
"IPv6 payload length equals 0 (maybe because of \"TCP segmentation offload\" (TSO))", EXPFILL }
},
{ &ei_ipv6_bogus_ipv6_version,
{ "ipv6.bogus_ipv6_version", PI_MALFORMED, PI_ERROR,
"Bogus IP version", EXPFILL }
},
{ &ei_ipv6_invalid_header,
{ "ipv6.invalid_header", PI_MALFORMED, PI_ERROR,
"Invalid IPv6 header", EXPFILL }
},
{ &ei_ipv6_opt_header_mismatch,
{ "ipv6.opt.header_mismatch", PI_PROTOCOL, PI_WARN,
"Wrong options extension header for type", EXPFILL }
},
{ &ei_ipv6_opt_deprecated,
{ "ipv6.opt.deprecated", PI_DEPRECATED, PI_NOTE,
"Option type is deprecated", EXPFILL }
},
{ &ei_ipv6_opt_mpl_ipv6_src_seed_id,
{ "ipv6.opt.mpl.ipv6_src_seed_id", PI_PROTOCOL, PI_COMMENT,
"Seed ID is the IPv6 Source Address", EXPFILL }
},
{ &ei_ipv6_opt_ioam_invalid_nodelen,
{ "ipv6.opt.ioam.trace.invalid_nodelen", PI_PROTOCOL, PI_ERROR,
"Invalid \"NodeLen\" value: cannot be 0", EXPFILL }
},
{ &ei_ipv6_opt_ioam_invalid_remlen,
{ "ipv6.opt.ioam.trace.invalid_remlen", PI_PROTOCOL, PI_ERROR,
"Invalid \"RemLen\" value", EXPFILL }
},
{ &ei_ipv6_opt_ioam_invalid_trace_type,
{ "ipv6.opt.ioam.trace.invalid_type", PI_PROTOCOL, PI_ERROR,
"Mismatch between Trace Type and NodeLen", EXPFILL }
},
{ &ei_ipv6_embed_ipv4_u_value,
{ "ipv6.embed_ipv4.u.nonzero", PI_PROTOCOL, PI_WARN,
"IPv4-Embedded IPv6 address bit 64 to 71 must be zero", EXPFILL }
},
{ &ei_ipv6_dst_addr_not_unspecified,
{ "ipv6.addr.not_unspecified", PI_PROTOCOL, PI_WARN,
"Unspecified address cannot appear as a destination", EXPFILL }
}
};
static ei_register_info ei_ipv6_hopopts[] = {
{ &ei_ipv6_hopopts_not_first,
{ "ipv6.hopopts.not_first", PI_PROTOCOL, PI_ERROR,
"IPv6 Hop-by-Hop extension header must appear immediately after IPv6 header", EXPFILL }
}
};
static ei_register_info ei_ipv6_routing[] = {
{ &ei_ipv6_src_addr_not_multicast,
{ "ipv6.src_addr.not_multicast", PI_PROTOCOL, PI_WARN,
"Source address must not be a multicast address", EXPFILL }
},
{ &ei_ipv6_dst_addr_not_multicast,
{ "ipv6.dst_addr.not_multicast", PI_PROTOCOL, PI_WARN,
"Destination address must not be a multicast address", EXPFILL }
},
{ &ei_ipv6_src_route_list_mult_inst_same_addr,
{ "ipv6.src_route_list.mult_inst_same_addr", PI_PROTOCOL, PI_WARN,
"Multiple instances of the same address must not appear in the source route list", EXPFILL }
},
{ &ei_ipv6_src_route_list_src_addr,
{ "ipv6.src_route_list.src_addr", PI_PROTOCOL, PI_WARN,
"Source address must not appear in the source route list", EXPFILL }
},
{ &ei_ipv6_src_route_list_dst_addr,
{ "ipv6.src_route_list.dst_addr", PI_PROTOCOL, PI_WARN,
"Destination address must not appear in the source route list", EXPFILL }
},
{ &ei_ipv6_src_route_list_multicast_addr,
{ "ipv6.src_route_list.multicast_addr", PI_PROTOCOL, PI_WARN,
"Multicast addresses must not appear in the source route list", EXPFILL }
},
{ &ei_ipv6_routing_rpl_cmpri_cmpre_pad,
{ "ipv6.routing.rpl.cmprI_cmprE_pad", PI_PROTOCOL, PI_WARN,
"When cmprI equals 0 and cmprE equals 0, pad MUST equal 0 but instead was X", EXPFILL }
},
{ &ei_ipv6_routing_rpl_addr_count_ge0,
{ "ipv6.routing.rpl.addr_count_ge0", PI_MALFORMED, PI_ERROR,
"Calculated total address count must be greater than or equal to 0, instead was X", EXPFILL }
},
{ &ei_ipv6_routing_rpl_reserved,
{ "ipv6.routing.rpl.reserved_not0", PI_PROTOCOL, PI_NOTE,
"Reserved field must equal 0 but instead was X", EXPFILL }
},
{ &ei_ipv6_routing_invalid_length,
{ "ipv6.routing.invalid_length", PI_MALFORMED, PI_ERROR,
"Invalid IPv6 Routing header length", EXPFILL }
},
{ &ei_ipv6_routing_invalid_segleft,
{ "ipv6.routing.invalid_segleft", PI_PROTOCOL, PI_WARN,
"IPv6 Routing Header segments left field must not exceed address count", EXPFILL }
},
{ &ei_ipv6_routing_undecoded,
{ "ipv6.routing.undecoded", PI_UNDECODED, PI_NOTE,
"Undecoded IPv6 routing header field", EXPFILL }
},
{ &ei_ipv6_routing_deprecated,
{ "ipv6.routing.deprecated", PI_DEPRECATED, PI_NOTE,
"Routing header type is deprecated", EXPFILL }
}
};
/* Decode As handling */
static build_valid_func ipv6_da_build_value[1] = {ipv6_value};
static decode_as_value_t ipv6_da_values = {ipv6_prompt, 1, ipv6_da_build_value};
static decode_as_t ipv6_da = {"ipv6", "ip.proto", 1, 0, &ipv6_da_values, NULL, NULL,
decode_as_default_populate_list, decode_as_default_reset, decode_as_default_change, NULL};
static decode_as_t ipv6_hopopts_da = {"ipv6.hopopts", "ip.proto", 1, 0, &ipv6_da_values, NULL, NULL,
decode_as_default_populate_list, decode_as_default_reset, decode_as_default_change, NULL};
static decode_as_t ipv6_routing_da = {"ipv6.routing", "ip.proto", 1, 0, &ipv6_da_values, NULL, NULL,
decode_as_default_populate_list, decode_as_default_reset, decode_as_default_change, NULL};
static decode_as_t ipv6_fraghdr_da = {"ipv6.fraghdr", "ip.proto", 1, 0, &ipv6_da_values, NULL, NULL,
decode_as_default_populate_list, decode_as_default_reset, decode_as_default_change, NULL};
static decode_as_t ipv6_dstopts_da = {"ipv6.dstopts", "ip.proto", 1, 0, &ipv6_da_values, NULL, NULL,
decode_as_default_populate_list, decode_as_default_reset, decode_as_default_change, NULL};
module_t *ipv6_module;
expert_module_t* expert_ipv6;
expert_module_t* expert_ipv6_hopopts;
expert_module_t* expert_ipv6_routing;
proto_ipv6 = proto_register_protocol("Internet Protocol Version 6", "IPv6", "ipv6");
proto_register_field_array(proto_ipv6, hf_ipv6, array_length(hf_ipv6));
proto_register_subtree_array(ett_ipv6, array_length(ett_ipv6));
expert_ipv6 = expert_register_protocol(proto_ipv6);
expert_register_field_array(expert_ipv6, ei_ipv6, array_length(ei_ipv6));
proto_ipv6_hopopts = proto_register_protocol("IPv6 Hop-by-Hop Option", "IPv6 Hop-by-Hop", "ipv6.hopopts");
proto_register_field_array(proto_ipv6_hopopts, hf_ipv6_hopopts, array_length(hf_ipv6_hopopts));
proto_register_subtree_array(ett_ipv6_hopopts, array_length(ett_ipv6_hopopts));
expert_ipv6_hopopts = expert_register_protocol(proto_ipv6_hopopts);
expert_register_field_array(expert_ipv6_hopopts, ei_ipv6_hopopts, array_length(ei_ipv6_hopopts));
proto_ipv6_routing = proto_register_protocol("Routing Header for IPv6", "IPv6 Routing", "ipv6.routing");
proto_register_field_array(proto_ipv6_routing, hf_ipv6_routing, array_length(hf_ipv6_routing));
proto_register_subtree_array(ett_ipv6_routing, array_length(ett_ipv6_routing));
expert_ipv6_routing = expert_register_protocol(proto_ipv6_routing);
expert_register_field_array(expert_ipv6_routing, ei_ipv6_routing, array_length(ei_ipv6_routing));
ipv6_routing_dissector_table = register_dissector_table("ipv6.routing.type", "IPv6 Routing Type",
proto_ipv6_routing, FT_UINT8, BASE_DEC);
proto_ipv6_routing_rt0 = proto_register_protocol_in_name_only("IPv6 Routing Type - Source Route", "Source Route", "ipv6.routing.type.rt0", proto_ipv6, FT_BYTES);
proto_ipv6_routing_mipv6 = proto_register_protocol_in_name_only("IPv6 Routing Type - Type 2", "Type 2", "ipv6.routing.type.mipv6", proto_ipv6, FT_BYTES);
proto_ipv6_routing_rpl = proto_register_protocol_in_name_only("IPv6 Routing Type - RPL Source Route", "RPL Source Route", "ipv6.routing.type.mipv6", proto_ipv6, FT_BYTES);
proto_ipv6_routing_srh = proto_register_protocol_in_name_only("IPv6 Routing Types - Segment Routing", "Segment Routing", "ipv6.routing.type.srh", proto_ipv6, FT_BYTES);
proto_ipv6_routing_crh = proto_register_protocol_in_name_only("IPv6 Routing Types - Compact Routing", "Compact Routing", "ipv6.routing.type.crh", proto_ipv6, FT_BYTES);
proto_ipv6_fraghdr = proto_register_protocol("Fragment Header for IPv6", "IPv6 Fragment", "ipv6.fraghdr");
proto_register_field_array(proto_ipv6_fraghdr, hf_ipv6_fraghdr, array_length(hf_ipv6_fraghdr));
proto_register_subtree_array(ett_ipv6_fraghdr, array_length(ett_ipv6_fraghdr));
proto_ipv6_dstopts = proto_register_protocol("Destination Options for IPv6", "IPv6 Destination", "ipv6.dstopts");
proto_register_field_array(proto_ipv6_dstopts, hf_ipv6_dstopts, array_length(hf_ipv6_dstopts));
proto_register_subtree_array(ett_ipv6_dstopts, array_length(ett_ipv6_dstopts));
/* Register configuration options */
ipv6_module = prefs_register_protocol(proto_ipv6, NULL);
prefs_register_bool_preference(ipv6_module, "defragment",
"Reassemble fragmented IPv6 datagrams",
"Whether fragmented IPv6 datagrams should be reassembled",
&ipv6_reassemble);
prefs_register_bool_preference(ipv6_module, "summary_in_tree",
"Show IPv6 summary in protocol tree",
"Whether the IPv6 summary line should be shown in the protocol tree",
&ipv6_summary_in_tree);
prefs_register_bool_preference(ipv6_module, "address_detail" ,
"Show details about IPv6 addresses",
"Whether to show extended information about IPv6 addresses",
&ipv6_address_detail);
prefs_register_bool_preference(ipv6_module, "use_geoip" ,
"Enable IPv6 geolocation",
"Whether to look up IPv6 addresses in each MaxMind database we have loaded",
&ipv6_use_geoip);
/* RPL Strict Header Checking */
prefs_register_bool_preference(ipv6_module, "perform_strict_rpl_srh_rfc_checking",
"Perform strict checking for RPL Source Routing Headers (RFC 6554)",
"Check that all RPL Source Routed packets conform to RFC 6554 and do not visit a node more than once",
&g_ipv6_rpl_srh_strict_rfc_checking);
prefs_register_bool_preference(ipv6_module, "try_heuristic_first",
"Try heuristic sub-dissectors first",
"Try to decode a packet using an heuristic sub-dissector before using a sub-dissector registered to a specific port",
&try_heuristic_first);
prefs_register_bool_preference(ipv6_module, "exthdr_under_root_protocol_tree",
"Display IPv6 extension headers under the root protocol tree",
"Whether to display IPv6 extension headers as a separate protocol or a sub-protocol of the IPv6 packet",
&ipv6_exthdr_under_root);
prefs_register_bool_preference(ipv6_module, "exthdr_hide_len_oct_field",
"Use a single field for IPv6 extension header length",
"If enabled the Length field in octets will be hidden",
&ipv6_exthdr_hide_len_oct_field);
prefs_register_bool_preference(ipv6_module, "tso_support",
"Support packet-capture from IPv6 TSO-enabled hardware",
"Whether to correct for TSO-enabled (TCP segmentation offload) hardware "
"captures, such as spoofing the IPv6 packet length", &ipv6_tso_supported);
static uat_field_t nat64_uats_flds[] = {
UAT_FLD_CSTRING_OTHER(nat64_prefix_uats, ipaddr, "NAT64 Prefix", nat64_prefix_uat_fld_ip_chk_cb, "IPv6 prefix address"),
UAT_FLD_VS(nat64_prefix_uats, prefix_len, "Prefix length", nat64_prefix_length_vals, "IPv6 prefix address length"),
UAT_FLD_VS(nat64_prefix_uats, prefix_wildcard_len, "Prefix wildcard length", nat64_prefix_wildcard_length_vals, "IPv6 prefix address wildcard length"),
UAT_END_FIELDS
};
nat64_prefix_uat = uat_new("NAT64 Network-Specific Prefixes",
sizeof(struct nat64_prefix_data),
"NAT64_NSP_list", /* filename */
TRUE, /* from_profile */
&nat64_prefix_uats, /* data_ptr */
&number_of_nat64_prefix, /* numitems_ptr */
UAT_AFFECTS_DISSECTION,
NULL,
nat64_prefix_copy_cb,
NULL,
nat64_prefix_free_cb,
NULL,
NULL,
nat64_uats_flds);
prefs_register_uat_preference(ipv6_module, "nat64_prefixes",
"NAT64 Prefixes",
"A list of IPv6 prefixes used for NAT64s",
nat64_prefix_uat);
ipv6_handle = register_dissector("ipv6", dissect_ipv6, proto_ipv6);
reassembly_table_register(&ipv6_reassembly_table,
&addresses_reassembly_table_functions);
ipv6_tap = register_tap("ipv6");
register_decode_as(&ipv6_da);
register_decode_as(&ipv6_hopopts_da);
register_decode_as(&ipv6_routing_da);
register_decode_as(&ipv6_fraghdr_da);
register_decode_as(&ipv6_dstopts_da);
register_conversation_table(proto_ipv6, TRUE, ipv6_conversation_packet, ipv6_endpoint_packet);
register_conversation_filter("ipv6", "IPv6", ipv6_filter_valid, ipv6_build_filter);
register_capture_dissector("ipv6", capture_ipv6, proto_ipv6);
}
void
proto_reg_handoff_ipv6(void)
{
dissector_handle_t ipv6_hopopts_handle;
dissector_handle_t ipv6_routing_handle;
dissector_handle_t ipv6_fraghdr_handle;
dissector_handle_t ipv6_dstopts_handle;
capture_dissector_handle_t ipv6_cap_handle;
capture_dissector_handle_t ipv6_ext_cap_handle;
dissector_handle_t h;
dissector_add_uint("ethertype", ETHERTYPE_IPv6, ipv6_handle);
dissector_add_uint("erf.types.type", ERF_TYPE_IPV6, ipv6_handle);
dissector_add_uint("ppp.protocol", PPP_IPV6, ipv6_handle);
dissector_add_uint("ppp.protocol", ETHERTYPE_IPv6, ipv6_handle);
dissector_add_uint("gre.proto", ETHERTYPE_IPv6, ipv6_handle);
dissector_add_uint("ip.proto", IP_PROTO_IPV6, ipv6_handle);
dissector_add_uint("null.type", BSD_AF_INET6_BSD, ipv6_handle);
dissector_add_uint("null.type", BSD_AF_INET6_FREEBSD, ipv6_handle);
dissector_add_uint("null.type", BSD_AF_INET6_DARWIN, ipv6_handle);
dissector_add_uint("chdlc.protocol", ETHERTYPE_IPv6, ipv6_handle);
dissector_add_uint("fr.nlpid", NLPID_IP6, ipv6_handle);
dissector_add_uint("osinl.excl", NLPID_IP6, ipv6_handle);
dissector_add_uint("x.25.spi", NLPID_IP6, ipv6_handle);
dissector_add_uint("arcnet.protocol_id", ARCNET_PROTO_IPv6, ipv6_handle);
dissector_add_uint("juniper.proto", JUNIPER_PROTO_IP6, ipv6_handle);
dissector_add_uint("juniper.proto", JUNIPER_PROTO_MPLS_IP6, ipv6_handle);
dissector_add_uint("pwach.channel_type", PW_ACH_TYPE_IPV6, ipv6_handle);
dissector_add_uint("mcc.proto", PW_ACH_TYPE_IPV6, ipv6_handle);
dissector_add_uint("sflow_245.header_protocol", SFLOW_245_HEADER_IPv6, ipv6_handle);
dissector_add_uint("wtap_encap", WTAP_ENCAP_RAW_IP6, ipv6_handle);
dissector_add_uint("enc", BSD_AF_INET6_BSD, ipv6_handle);
dissector_add_uint("vxlan.next_proto", VXLAN_IPV6, ipv6_handle);
dissector_add_uint("nsh.next_proto", NSH_IPV6, ipv6_handle);
dissector_add_for_decode_as_with_preference("udp.port", ipv6_handle);
ipv6_hopopts_handle = create_dissector_handle(dissect_hopopts, proto_ipv6_hopopts);
dissector_add_uint("ip.proto", IP_PROTO_HOPOPTS, ipv6_hopopts_handle);
ipv6_routing_handle = create_dissector_handle(dissect_routing6, proto_ipv6_routing);
dissector_add_uint("ip.proto", IP_PROTO_ROUTING, ipv6_routing_handle);
ipv6_fraghdr_handle = create_dissector_handle(dissect_fraghdr, proto_ipv6_fraghdr);
dissector_add_uint("ip.proto", IP_PROTO_FRAGMENT, ipv6_fraghdr_handle);
ipv6_dstopts_handle = create_dissector_handle(dissect_dstopts, proto_ipv6_dstopts);
dissector_add_uint("ip.proto", IP_PROTO_DSTOPTS, ipv6_dstopts_handle);
ip_dissector_table = find_dissector_table("ip.proto");
ipv6_cap_handle = find_capture_dissector("ipv6");
capture_dissector_add_uint("ethertype", ETHERTYPE_IPv6, ipv6_cap_handle);
capture_dissector_add_uint("enc", BSD_AF_INET6_BSD, ipv6_cap_handle);
capture_dissector_add_uint("null.bsd", BSD_AF_INET6_BSD, ipv6_cap_handle);
capture_dissector_add_uint("null.bsd", BSD_AF_INET6_FREEBSD, ipv6_cap_handle);
capture_dissector_add_uint("null.bsd", BSD_AF_INET6_DARWIN, ipv6_cap_handle);
capture_dissector_add_uint("fr.nlpid", NLPID_IP6, ipv6_cap_handle);
ipv6_ext_cap_handle = create_capture_dissector_handle(capture_ipv6_exthdr, proto_ipv6_hopopts);
capture_dissector_add_uint("ip.proto", IP_PROTO_HOPOPTS, ipv6_ext_cap_handle);
ipv6_ext_cap_handle = create_capture_dissector_handle(capture_ipv6_exthdr, proto_ipv6_routing);
capture_dissector_add_uint("ip.proto", IP_PROTO_ROUTING, ipv6_ext_cap_handle);
ipv6_ext_cap_handle = create_capture_dissector_handle(capture_ipv6_exthdr, proto_ipv6_fraghdr);
capture_dissector_add_uint("ip.proto", IP_PROTO_FRAGMENT, ipv6_ext_cap_handle);
ipv6_ext_cap_handle = create_capture_dissector_handle(capture_ipv6_exthdr, proto_ipv6_dstopts);
capture_dissector_add_uint("ip.proto", IP_PROTO_DSTOPTS, ipv6_ext_cap_handle);
h = create_dissector_handle(dissect_routing6_rt0, proto_ipv6_routing_rt0);
dissector_add_uint("ipv6.routing.type", IPv6_RT_HEADER_SOURCE_ROUTING, h);
h = create_dissector_handle(dissect_routing6_mipv6, proto_ipv6_routing_mipv6);
dissector_add_uint("ipv6.routing.type", IPv6_RT_HEADER_MOBILE_IP, h);
h = create_dissector_handle(dissect_routing6_rpl, proto_ipv6_routing_rpl);
dissector_add_uint("ipv6.routing.type", IPv6_RT_HEADER_RPL, h);
h = create_dissector_handle(dissect_routing6_srh, proto_ipv6_routing_srh);
dissector_add_uint("ipv6.routing.type", IPv6_RT_HEADER_SEGMENT_ROUTING, h);
h = create_dissector_handle(dissect_routing6_crh, proto_ipv6_routing_crh);
dissector_add_uint("ipv6.routing.type", IPv6_RT_HEADER_COMPACT_16, h);
dissector_add_uint("ipv6.routing.type", IPv6_RT_HEADER_COMPACT_32, h);
exported_pdu_tap = find_tap_id("IP");
}
/*
* Editor modelines
*
* Local Variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* ex: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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