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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>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#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/prefs.h>
#include <epan/conversation_table.h>
#include <epan/dissector_filters.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 <wiretap/erf.h>
#include <wsutil/str_util.h>
#include "packet-ipv6.h"
#include "packet-ip.h"
#include "packet-juniper.h"
#include "packet-sflow.h"
#include "packet-vxlan.h"
#ifdef HAVE_GEOIP_V6
#include <GeoIP.h>
#include <epan/geoip_db.h>
#endif /* HAVE_GEOIP_V6 */
void proto_register_ipv6(void);
void proto_reg_handoff_ipv6(void);
/* 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_EXP_1E 0x1E /* 00 0 11110 = 30 */
#define IP6OPT_QUICKSTART 0x26 /* 00 1 00110 = 38 */
#define IP6OPT_EXP_3E 0x3E /* 00 1 11110 = 62 */
#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
/* Protocol specific data indices */
#define IPV6_PROTO_NXT_HDR 0
#define IPV6_PROTO_VALUE 1
#define IPV6_PROTO_PINFO 2
static int ipv6_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 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_host = -1;
static int hf_ipv6_src_sa_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_dst = -1;
static int hf_ipv6_dst_host = -1;
static int hf_ipv6_dst_sa_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_addr = -1;
static int hf_ipv6_host = -1;
static int hf_ipv6_sa_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_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_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_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_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_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_first_seg = -1;
static int hf_ipv6_routing_srh_flags = -1;
static int hf_ipv6_routing_srh_flag_c = -1;
static int hf_ipv6_routing_srh_flag_p = -1;
static int hf_ipv6_routing_srh_flag_o = -1;
static int hf_ipv6_routing_srh_flag_a = -1;
static int hf_ipv6_routing_srh_flag_h = -1;
static int hf_ipv6_routing_srh_flag_unused = -1;
static int hf_ipv6_routing_srh_reserved = -1;
static int hf_ipv6_routing_srh_addr = -1;
#ifdef HAVE_GEOIP_V6
static int hf_geoip_country = -1;
static int hf_geoip_city = -1;
static int hf_geoip_org = -1;
static int hf_geoip_isp = -1;
static int hf_geoip_asnum = -1;
static int hf_geoip_lat = -1;
static int hf_geoip_lon = -1;
static int hf_geoip_src_country = -1;
static int hf_geoip_src_city = -1;
static int hf_geoip_src_org = -1;
static int hf_geoip_src_isp = -1;
static int hf_geoip_src_asnum = -1;
static int hf_geoip_src_lat = -1;
static int hf_geoip_src_lon = -1;
static int hf_geoip_dst_country = -1;
static int hf_geoip_dst_city = -1;
static int hf_geoip_dst_org = -1;
static int hf_geoip_dst_isp = -1;
static int hf_geoip_dst_asnum = -1;
static int hf_geoip_dst_lat = -1;
static int hf_geoip_dst_lon = -1;
#endif /* HAVE_GEOIP_V6 */
static gint ett_ipv6_proto = -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_hopopts_proto = -1;
static gint ett_ipv6_fraghdr_proto = -1;
static gint ett_ipv6_routing_proto = -1;
static gint ett_ipv6_routing_srh_flags = -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;
#ifdef HAVE_GEOIP_V6
static gint ett_geoip_info = -1;
#endif /* HAVE_GEOIP_V6 */
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_not_implemented = 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_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_jumbo_not_hopbyhop = EI_INIT;
static expert_field ei_ipv6_opt_invalid_len = EI_INIT;
static expert_field ei_ipv6_opt_unknown_data = 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_bogus_ipv6_version = EI_INIT;
static expert_field ei_ipv6_invalid_header = EI_INIT;
#define IPv6_HDR_VERS(ipv6) (((*(guint8 *)(ipv6)) >> 4) & 0x0f)
#define IPv6_HDR_TCLS(ipv6) _ipv6_hdr_tcls(ipv6)
#define TVB_IPv6_HDR_VERS(tvb, offset) tvb_get_bits8(tvb, (offset) * 8, 4)
#define TVB_IPv6_HDR_TCLS(tvb, offset) tvb_get_bits8(tvb, (offset) * 8 + 4, 8)
extern const struct e_in6_addr *tvb_get_ptr_ipv6(tvbuff_t tvb, int offset);
#define tvb_get_ptr_ipv6(tvb, offset) \
((const struct e_in6_addr *)tvb_get_ptr(tvb, offset, IPv6_ADDR_SIZE))
static inline guint8 _ipv6_hdr_tcls(const struct ws_ip6_hdr *hdr)
{
guint8 hi, low;
const guint8 *p = (const guint8 *)hdr;
hi = p[0] << 4;
low = p[1] >> 4;
return (hi & 0xf0) | (low & 0x0f);
}
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);
}
static void ipv6_prompt(packet_info *pinfo, gchar* result)
{
g_snprintf(result, MAX_DECODE_AS_PROMPT_LEN, "IP protocol %u as",
GPOINTER_TO_UINT(p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, (pinfo->curr_layer_num<<8) | IPV6_PROTO_VALUE)));
}
static gpointer ipv6_value(packet_info *pinfo)
{
return p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, (pinfo->curr_layer_num<<8) | IPV6_PROTO_VALUE);
}
static void ipv6_next_header_prompt(packet_info *pinfo, gchar* result)
{
g_snprintf(result, MAX_DECODE_AS_PROMPT_LEN, "IP Next Header %u as",
GPOINTER_TO_UINT(p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, (pinfo->curr_layer_num<<8) | IPV6_PROTO_NXT_HDR)));
}
static gpointer ipv6_next_header_value(packet_info *pinfo)
{
return p_get_proto_data(pinfo->pool, pinfo, proto_ipv6, (pinfo->curr_layer_num<<8) | IPV6_PROTO_NXT_HDR);
}
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 int
ipv6_conversation_packet(void *pct, packet_info *pinfo, epan_dissect_t *edt _U_, const void *vip)
{
conv_hash_t *hash = (conv_hash_t*) pct;
const struct ws_ip6_hdr *ip6h = (const struct ws_ip6_hdr *)vip;
address src;
address dst;
/* Addresses aren't implemented as 'address' type in struct ws_ip6_hdr */
src.type = dst.type = AT_IPv6;
src.len = dst.len = sizeof(struct e_in6_addr);
src.data = &ip6h->ip6_src;
dst.data = &ip6h->ip6_dst;
add_conversation_table_data(hash, &src, &dst, 0, 0, 1, pinfo->fd->pkt_len, &pinfo->rel_ts, &pinfo->abs_ts, &ipv6_ct_dissector_info, PT_NONE);
return 1;
}
static const char* ipv6_host_get_filter_type(hostlist_talker_t* host, conv_filter_type_e filter)
{
if ((filter == CONV_FT_ANY_ADDRESS) && (host->myaddress.type == AT_IPv6))
return "ipv6.addr";
return CONV_FILTER_INVALID;
}
static hostlist_dissector_info_t ipv6_host_dissector_info = {&ipv6_host_get_filter_type};
static int
ipv6_hostlist_packet(void *pit, packet_info *pinfo, epan_dissect_t *edt _U_, const void *vip)
{
conv_hash_t *hash = (conv_hash_t*) pit;
const struct ws_ip6_hdr *ip6h = (const struct ws_ip6_hdr *)vip;
address src;
address dst;
/* Addresses aren't implemented as 'address' type in struct ws_ip6_hdr */
set_address(&src, AT_IPv6, sizeof(struct e_in6_addr), &ip6h->ip6_src);
set_address(&dst, AT_IPv6, sizeof(struct e_in6_addr), &ip6h->ip6_dst);
add_hostlist_table_data(hash, &src, 0, TRUE, 1, pinfo->fd->pkt_len, &ipv6_host_dissector_info, PT_NONE);
add_hostlist_table_data(hash, &dst, 0, FALSE, 1, pinfo->fd->pkt_len, &ipv6_host_dissector_info, PT_NONE);
return 1;
}
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 g_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));
}
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_next_header_dissector_table;
/* Reassemble fragmented datagrams */
static gboolean ipv6_reassemble = TRUE;
/* Place IPv6 summary in proto tree */
static gboolean ipv6_summary_in_tree = TRUE;
#ifdef HAVE_GEOIP_V6
/* Look up addresses in GeoIP */
static gboolean ipv6_use_geoip = TRUE;
#endif /* HAVE_GEOIP_V6 */
/* 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;
/*
* 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_EXP_1E, "Experimental (0x1E)" },
{ IP6OPT_QUICKSTART, "Quick-Start" },
{ IP6OPT_EXP_3E, "Experimental (0x3E)" },
{ IP6OPT_EXP_5E, "Experimental (0x5E)" },
{ IP6OPT_RPL, "RPL Option" },
{ IP6OPT_MPL, "MPL Option" },
{ IP6OPT_EXP_7E, "Experimental (0x7E)" },
{ IP6OPT_ENDI, "Endpoint Identification (DEPRECATED)" },
{ 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 }
};
value_string_ext ipv6_opt_type_vals_ext = VALUE_STRING_EXT_INIT(ipv6_opt_type_vals);
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 }
};
gboolean
capture_ipv6(const guchar *pd, int offset, int len, capture_packet_info_t *cpinfo, const union wtap_pseudo_header *pseudo_header _U_)
{
guint8 nxt;
int advance;
if (!BYTES_ARE_IN_FRAME(offset, len, 4+4+16+16))
return FALSE;
capture_dissector_increment_count(cpinfo, proto_ipv6);
nxt = pd[offset+6]; /* get the "next header" value */
offset += 4+4+16+16; /* skip past the IPv6 header */
again:
switch (nxt) {
case IP_PROTO_HOPOPTS:
case IP_PROTO_ROUTING:
case IP_PROTO_DSTOPTS:
if (!BYTES_ARE_IN_FRAME(offset, len, 2))
return FALSE;
nxt = pd[offset];
advance = (pd[offset+1] + 1) << 3;
if (!BYTES_ARE_IN_FRAME(offset, len, advance))
return FALSE;
offset += advance;
goto again;
case IP_PROTO_FRAGMENT:
if (!BYTES_ARE_IN_FRAME(offset, len, 2))
return FALSE;
nxt = pd[offset];
advance = 8;
if (!BYTES_ARE_IN_FRAME(offset, len, advance))
return FALSE;
offset += advance;
goto again;
case IP_PROTO_AH:
if (!BYTES_ARE_IN_FRAME(offset, len, 2))
return FALSE;
nxt = pd[offset];
advance = 8 + ((pd[offset+1] - 1) << 2);
if (!BYTES_ARE_IN_FRAME(offset, len, advance))
return FALSE;
offset += advance;
goto again;
case IP_PROTO_SHIM6:
if (!BYTES_ARE_IN_FRAME(offset, len, 2))
return FALSE;
nxt = pd[offset];
advance = (pd[offset+1] + 1) << 3;
if (!BYTES_ARE_IN_FRAME(offset, len, advance))
return FALSE;
offset += advance;
goto again;
}
return try_capture_dissector("ipv6.nxt", nxt, pd, offset, len, cpinfo, pseudo_header);
}
#ifdef HAVE_GEOIP_V6
static void
add_geoip_info_entry(proto_tree *geoip_info_tree, proto_item *geoip_info_item, tvbuff_t *tvb, gint offset, const struct e_in6_addr *ip, int isdst)
{
guint num_dbs = geoip_db_num_dbs();
guint item_cnt = 0;
guint dbnum;
for (dbnum = 0; dbnum < num_dbs; dbnum++) {
char *geoip_str = geoip_db_lookup_ipv6(dbnum, *ip, NULL);
int db_type = geoip_db_type(dbnum);
int geoip_hf, geoip_local_hf;
switch (db_type) {
case GEOIP_COUNTRY_EDITION_V6:
geoip_hf = hf_geoip_country;
geoip_local_hf = (isdst) ? hf_geoip_dst_country : hf_geoip_src_country;
break;
#if NUM_DB_TYPES > 31
case GEOIP_CITY_EDITION_REV0_V6:
case GEOIP_CITY_EDITION_REV1_V6:
geoip_hf = hf_geoip_city;
geoip_local_hf = (isdst) ? hf_geoip_dst_city : hf_geoip_src_city;
break;
case GEOIP_ORG_EDITION_V6:
geoip_hf = hf_geoip_org;
geoip_local_hf = (isdst) ? hf_geoip_dst_org : hf_geoip_src_org;
break;
case GEOIP_ISP_EDITION_V6:
geoip_hf = hf_geoip_isp;
geoip_local_hf = (isdst) ? hf_geoip_dst_isp : hf_geoip_src_isp;
break;
case GEOIP_ASNUM_EDITION_V6:
geoip_hf = hf_geoip_asnum;
geoip_local_hf = (isdst) ? hf_geoip_dst_asnum : hf_geoip_src_asnum;
break;
#endif /* DB_NUM_TYPES */
case WS_LAT_FAKE_EDITION:
geoip_hf = hf_geoip_lat;
geoip_local_hf = (isdst) ? hf_geoip_dst_lat : hf_geoip_src_lat;
break;
case WS_LON_FAKE_EDITION:
geoip_hf = hf_geoip_lon;
geoip_local_hf = (isdst) ? hf_geoip_dst_lon : hf_geoip_src_lon;
break;
default:
continue;
}
if (geoip_str) {
proto_item *item;
if (db_type == WS_LAT_FAKE_EDITION || db_type == WS_LON_FAKE_EDITION) {
/* Convert latitude, longitude to double. Fix bug #5077 */
item = proto_tree_add_double_format_value(geoip_info_tree, geoip_local_hf, tvb,
offset, 16, g_ascii_strtod(geoip_str, NULL), "%s", geoip_str);
PROTO_ITEM_SET_GENERATED(item);
item = proto_tree_add_double_format_value(geoip_info_tree, geoip_hf, tvb,
offset, 16, g_ascii_strtod(geoip_str, NULL), "%s", geoip_str);
PROTO_ITEM_SET_GENERATED(item);
PROTO_ITEM_SET_HIDDEN(item);
} else {
item = proto_tree_add_string(geoip_info_tree, geoip_local_hf, tvb,
offset, 16, geoip_str);
PROTO_ITEM_SET_GENERATED(item);
item = proto_tree_add_string(geoip_info_tree, geoip_hf, tvb,
offset, 16, geoip_str);
PROTO_ITEM_SET_GENERATED(item);
PROTO_ITEM_SET_HIDDEN(item);
}
item_cnt++;
proto_item_append_text(geoip_info_item, "%s%s", plurality(item_cnt, "", ", "), geoip_str);
wmem_free(NULL, geoip_str);
}
}
if (item_cnt == 0)
proto_item_append_text(geoip_info_item, "Unknown");
}
static void
add_geoip_info(proto_tree *tree, tvbuff_t *tvb, gint offset, const struct e_in6_addr *src, const struct e_in6_addr *dst)
{
guint num_dbs;
proto_item *geoip_info_item;
proto_tree *geoip_info_tree;
num_dbs = geoip_db_num_dbs();
if (num_dbs < 1)
return;
geoip_info_tree = proto_tree_add_subtree(tree, tvb, offset + IP6H_SRC, 16, ett_geoip_info, &geoip_info_item, "Source GeoIP: ");
PROTO_ITEM_SET_GENERATED(geoip_info_item);
add_geoip_info_entry(geoip_info_tree, geoip_info_item, tvb, offset + IP6H_SRC, src, 0);
geoip_info_tree = proto_tree_add_subtree(tree, tvb, offset + IP6H_DST, 16, ett_geoip_info, &geoip_info_item, "Destination GeoIP: ");
PROTO_ITEM_SET_GENERATED(geoip_info_item);
add_geoip_info_entry(geoip_info_tree, geoip_info_item, tvb, offset + IP6H_DST, dst, 1);
}
#endif /* HAVE_GEOIP_V6 */
static void
ipv6_reassemble_init(void)
{
reassembly_table_init(&ipv6_reassembly_table,
&addresses_reassembly_table_functions);
}
/* Returns 'show_data' */
static gboolean
ipv6_reassemble_do(tvbuff_t **tvb_ptr, gint *offset_ptr, packet_info *pinfo, proto_tree *ipv6_tree, guint32 plen)
{
ipv6_pinfo_t *ipv6_pinfo = p_get_ipv6_pinfo(pinfo);
fragment_head *ipfd_head;
tvbuff_t *next_tvb;
gboolean update_col_info = TRUE;
pinfo->fragmented = TRUE;
if (!ipv6_reassemble) {
/* not reassembling */
if (ipv6_pinfo->frag_off != 0) {
/* not in the first fragment */
return TRUE;
}
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, ipv6_pinfo->frag_ident, NULL,
ipv6_pinfo->frag_off, plen, ipv6_pinfo->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;
return FALSE;
}
}
return TRUE;
}
static void
ipv6_reassemble_cleanup(void)
{
reassembly_table_destroy(&ipv6_reassembly_table);
}
enum {
IPv6_RT_HEADER_SOURCE_ROUTING=0,
IPv6_RT_HEADER_NIMROD,
IPv6_RT_HEADER_MobileIP,
IPv6_RT_HEADER_RPL,
IPv6_RT_HEADER_SEGMENT_ROUTING
};
/* Routing Header Types */
static const value_string routing_header_type[] = {
{ IPv6_RT_HEADER_SOURCE_ROUTING, "IPv6 Source Routing" },
{ IPv6_RT_HEADER_NIMROD, "Nimrod" },
{ IPv6_RT_HEADER_MobileIP, "Mobile IP" },
{ IPv6_RT_HEADER_RPL, "RPL" },
{ IPv6_RT_HEADER_SEGMENT_ROUTING, "Segment Routing"},
{ 0, NULL }
};
struct rthdr_proto_item {
proto_item *len;
proto_item *type;
proto_item *segs;
};
static proto_item *
_proto_tree_add_ipv6_vector_address(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start,
gint length, const struct e_in6_addr *value_ptr, int idx)
{
address addr;
gchar *str;
set_address(&addr, AT_IPv6, IPv6_ADDR_SIZE, value_ptr);
str = address_with_resolution_to_str(wmem_packet_scope(), &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 void
dissect_routing6_rt0(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *rthdr_tree,
struct rthdr_proto_item *rthdr_ti, struct ip6_rthdr rt)
{
proto_item *ti;
gint idx;
gint rt0_addr_count;
const struct e_in6_addr *addr = NULL;
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_src_reserved, tvb, offset, 4, ENC_NA);
offset += 4;
if (rt.ip6r_len % 2 != 0) {
expert_add_info_format(pinfo, rthdr_ti->len, &ei_ipv6_routing_invalid_length,
"IPv6 Routing Header extension header length must not be odd");
}
rt0_addr_count = rt.ip6r_len / 2;
if (rt.ip6r_segleft > rt0_addr_count) {
expert_add_info_format(pinfo, rthdr_ti->segs, &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(rthdr_tree, hf_ipv6_routing_src_addr, tvb,
offset, IPv6_ADDR_SIZE, addr, idx);
offset += IPv6_ADDR_SIZE;
if (in6_is_addr_multicast(addr)) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_multicast_addr);
}
}
if (addr != NULL && rt.ip6r_segleft > 0) {
alloc_address_wmem(pinfo->pool, &pinfo->dst, AT_IPv6, IPv6_ADDR_SIZE, addr);
}
}
/* Mobile IPv6 Routing Header (Type 2) */
static void
dissect_routing6_mipv6(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *rthdr_tree,
struct rthdr_proto_item *rthdr_ti, struct ip6_rthdr rt)
{
proto_item *ti;
const struct e_in6_addr *addr;
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_mipv6_reserved, tvb, offset, 4, ENC_NA);
offset += 4;
if (rt.ip6r_len != 2) {
expert_add_info_format(pinfo, rthdr_ti->len, &ei_ipv6_routing_invalid_length,
"IPv6 Type 2 Routing Header extension header length must equal 2");
}
if (rt.ip6r_segleft != 1) {
expert_add_info_format(pinfo, rthdr_ti->segs, &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(rthdr_tree, hf_ipv6_routing_mipv6_home_address, tvb,
offset, IPv6_ADDR_SIZE, addr, 1);
if (in6_is_addr_multicast(addr)) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_multicast_addr);
}
if (rt.ip6r_segleft > 0) {
alloc_address_wmem(pinfo->pool, &pinfo->dst, AT_IPv6, IPv6_ADDR_SIZE, addr);
}
}
/* RPL Source Routing Header (Type 3) */
static void
dissect_routing6_rpl(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *rthdr_tree,
struct rthdr_proto_item *rthdr_ti, struct ip6_rthdr rt)
{
proto_item *pi = proto_tree_get_parent(rthdr_tree);
proto_item *ti;
guint8 cmprI, cmprE, cmprX, pad;
guint32 reserved;
gint idx;
gint rpl_addr_count;
struct e_in6_addr rpl_fulladdr;
const struct e_in6_addr *ip6_dst_addr, *ip6_src_addr;
wmem_array_t *rpl_addr_vector = NULL;
guint i;
/* IPv6 destination address used for elided bytes */
ip6_dst_addr = (const struct e_in6_addr *)pinfo->dst.data;
/* IPv6 source address used for strict checking */
ip6_src_addr = (const struct e_in6_addr *)pinfo->src.data;
/* from RFC6554: Multicast addresses MUST NOT appear in the IPv6 Destination Address field */
if (in6_is_addr_multicast(ip6_dst_addr)) {
expert_add_info(pinfo, pi, &ei_ipv6_dst_addr_not_multicast);
}
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_rpl_cmprI, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_rpl_cmprE, tvb, offset, 4, ENC_BIG_ENDIAN);
ti = proto_tree_add_item(rthdr_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(rthdr_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.ip6r_len > 0) {
rpl_addr_count = (((rt.ip6r_len * 8) - pad - (16 - cmprE)) / (16 - cmprI)) + 1;
}
ti = proto_tree_add_int(rthdr_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.ip6r_segleft > (guint)rpl_addr_count) {
expert_add_info_format(pinfo, rthdr_ti->segs, &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(wmem_packet_scope(), 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(rthdr_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(rthdr_tree, 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_is_addr_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 (rt.ip6r_segleft > 0) {
alloc_address_wmem(pinfo->pool, &pinfo->dst, AT_IPv6, IPv6_ADDR_SIZE, &rpl_fulladdr);
}
}
}
}
/* Segment Routing Header (Type 4) */
/* draft-ietf-6man-segment-routing-header-01 */
static void
dissect_routing6_srh(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *rthdr_tree,
struct rthdr_proto_item *rthdr_ti, struct ip6_rthdr rt)
{
proto_item *ti;
gint offlim, offstart;
gint idx;
gint srh_first_seg, srh_addr_count;
const struct e_in6_addr *addr;
proto_tree *rthdr_srh_addr_tree;
static const int *srh_flags[] = {
&hf_ipv6_routing_srh_flag_c,
&hf_ipv6_routing_srh_flag_p,
&hf_ipv6_routing_srh_flag_o,
&hf_ipv6_routing_srh_flag_a,
&hf_ipv6_routing_srh_flag_h,
&hf_ipv6_routing_srh_flag_unused,
NULL
};
srh_first_seg = tvb_get_guint8(tvb, offset);
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_srh_first_seg, tvb, offset, 1, ENC_NA);
offset += 1;
srh_addr_count = srh_first_seg + 1;
/* TODO: dissect TLVs */
ti = proto_tree_add_bitmask(rthdr_tree, tvb, offset, hf_ipv6_routing_srh_flags,
ett_ipv6_routing_srh_flags, srh_flags, ENC_BIG_ENDIAN);
expert_add_info_format(pinfo, ti, &ei_ipv6_routing_not_implemented,
"Dissection for SRH TLVs not yet implemented");
offset += 2;
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_srh_reserved, tvb, offset, 1, ENC_NA);
offset += 1;
if (rt.ip6r_segleft > srh_first_seg) {
expert_add_info_format(pinfo, rthdr_ti->segs, &ei_ipv6_routing_invalid_segleft,
"IPv6 Type 4 Routing Header segments left field must not exceed first segment (%u)", srh_first_seg);
}
offstart = offset;
offlim = offset + srh_addr_count * IPv6_ADDR_SIZE;
/* Destination address is the first vector address */
addr = tvb_get_ptr_ipv6(tvb, offset);
if (in6_is_addr_multicast(addr)) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_multicast_addr);
}
ti = _proto_tree_add_ipv6_vector_address(rthdr_tree, hf_ipv6_routing_srh_addr, tvb,
offset, IPv6_ADDR_SIZE, addr, 0);
if (rt.ip6r_segleft == 1) {
proto_item_append_text(ti, " [next segment]");
}
if (rt.ip6r_segleft > 0) {
alloc_address_wmem(pinfo->pool, &pinfo->dst, AT_IPv6, IPv6_ADDR_SIZE, addr);
}
offset += IPv6_ADDR_SIZE;
for (idx = 1; offset < offlim; offset += IPv6_ADDR_SIZE, idx++) {
addr = tvb_get_ptr_ipv6(tvb, offset);
if (in6_is_addr_multicast(addr)) {
expert_add_info(pinfo, ti, &ei_ipv6_src_route_list_multicast_addr);
}
ti = _proto_tree_add_ipv6_vector_address(rthdr_tree, hf_ipv6_routing_srh_addr, tvb,
offset, IPv6_ADDR_SIZE, addr, idx);
if (idx == rt.ip6r_segleft - 1) {
proto_item_append_text(ti, " [next segment]");
}
}
rthdr_srh_addr_tree = proto_tree_add_subtree_format(rthdr_tree, tvb, offstart, srh_addr_count * IPv6_ADDR_SIZE,
ett_ipv6_routing_srh_vect, &ti, "Segments in Traversal Order");
PROTO_ITEM_SET_GENERATED(ti);
offset -= IPv6_ADDR_SIZE;
for (idx = srh_first_seg; offset >= offstart; offset -= IPv6_ADDR_SIZE, idx--) {
addr = tvb_get_ptr_ipv6(tvb, offset);
ti = _proto_tree_add_ipv6_vector_address(rthdr_srh_addr_tree, hf_ipv6_routing_srh_addr, tvb,
offset, IPv6_ADDR_SIZE, addr, idx);
if (idx == rt.ip6r_segleft - 1) {
proto_item_append_text(ti, " [next segment]");
}
}
}
static int
dissect_routing6(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_) {
struct ip6_rthdr rt;
guint len;
proto_tree *rthdr_tree;
proto_item *pi, *ti;
struct rthdr_proto_item rthdr_ti;
int offset = 0;
col_append_sep_str(pinfo->cinfo, COL_INFO, " , ", "IPv6 routing");
tvb_memcpy(tvb, (guint8 *)&rt, offset, sizeof(rt));
len = (rt.ip6r_len + 1) << 3;
/* !!! specify length */
pi = proto_tree_add_item(tree, proto_ipv6_routing, tvb, offset, len, ENC_NA);
proto_item_append_text(pi, " (%s)", val_to_str(rt.ip6r_type, routing_header_type, "Unknown type %u"));
rthdr_tree = proto_item_add_subtree(pi, ett_ipv6_routing_proto);
proto_tree_add_item(rthdr_tree, hf_ipv6_routing_nxt, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
rthdr_ti.len = proto_tree_add_item(rthdr_tree, hf_ipv6_routing_len, tvb, offset, 1, ENC_BIG_ENDIAN);
ti = proto_tree_add_uint(rthdr_tree, hf_ipv6_routing_len_oct, tvb, offset, 1, len);
proto_item_append_text(ti, " bytes");
PROTO_ITEM_SET_GENERATED(ti);
if (ipv6_exthdr_hide_len_oct_field) {
PROTO_ITEM_SET_HIDDEN(ti);
proto_item_append_text(rthdr_ti.len, " (%d bytes)", len);
}
offset += 1;
rthdr_ti.type = proto_tree_add_item(rthdr_tree, hf_ipv6_routing_type, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
rthdr_ti.segs = proto_tree_add_item(rthdr_tree, hf_ipv6_routing_segleft, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
switch (rt.ip6r_type) {
case IPv6_RT_HEADER_SOURCE_ROUTING:
dissect_routing6_rt0(tvb, offset, pinfo, rthdr_tree, &rthdr_ti, rt);
break;
case IPv6_RT_HEADER_MobileIP:
dissect_routing6_mipv6(tvb, offset, pinfo, rthdr_tree, &rthdr_ti, rt);
break;
case IPv6_RT_HEADER_RPL:
dissect_routing6_rpl(tvb, offset, pinfo, rthdr_tree, &rthdr_ti, rt);
break;
case IPv6_RT_HEADER_SEGMENT_ROUTING:
dissect_routing6_srh(tvb, offset, pinfo, rthdr_tree, &rthdr_ti, rt);
break;
default:
break;
}
return len;
}
static int
dissect_fraghdr(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_) {
proto_item *pi, *ti;
proto_tree *frag_tree;
guint8 nxt;
guint16 offlg;
gint offset = 0;
ipv6_pinfo_t *ipv6_pinfo;
ipv6_pinfo = p_get_ipv6_pinfo(pinfo);
nxt = tvb_get_guint8(tvb, offset);
offlg = tvb_get_ntohs(tvb, offset + 2);
ipv6_pinfo->frag_off = offlg & IP6F_OFF_MASK; /* offset in bytes */
ipv6_pinfo->frag_flg = offlg & IP6F_MORE_FRAG;
ipv6_pinfo->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)",
ipv6_pinfo->frag_off, ipv6_pinfo->frag_flg ? "y" : "n", ipv6_pinfo->frag_ident, nxt);
/* IPv6 Fragmentation Header has fixed length of 8 bytes */
pi = proto_tree_add_item(tree, proto_ipv6_fraghdr, tvb, offset, 8, ENC_NA);
if (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);
if (frag_tree) {
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)", ipv6_pinfo->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;*/
}
return 8;
}
static const value_string rtalertvals[] = {
{ IP6OPT_RTALERT_MLD, "MLD" },
{ IP6OPT_RTALERT_RSVP, "RSVP" },
{ IP6OPT_RTALERT_ACTNET, "Active Network" },
{ 0, NULL }
};
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, gboolean hopopts, guint16 ip6_plen)
{
proto_item *pi = proto_tree_get_parent(opt_tree);
proto_item *ti;
guint32 jumbo_plen = 0;
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 (!hopopts) {
expert_add_info(pinfo, pi, &ei_ipv6_opt_jumbo_not_hopbyhop);
}
if (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 const int *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 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, guint8 hlim)
{
proto_item *pi = proto_tree_get_parent(opt_tree);
proto_item *ti;
guint8 command, function, rate;
guint8 ttl_diff = 0;
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);
ttl_diff = (hlim - 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, ", %s, QS TTL %u, QS TTL diff %u",
val_to_str_ext(rate, &qs_rate_vals_ext, "Unknown (%u)"),
qs_ttl, 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;
}
/*
------------------------------------------------------------
| 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;
}
/*
* 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, 16, ENC_NA);
alloc_address_tvb(pinfo->pool, &pinfo->src, AT_IPv6, 16, tvb, offset);
offset += 16;
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 const int *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;
}
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 const int *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_ip *iph, const int exthdr_proto)
{
gint len, offset_end;
proto_tree *exthdr_tree, *opt_tree, *opt_type_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;
gboolean hopopts;
struct opt_proto_item opt_ti;
ipv6_pinfo_t *ipv6_pinfo = p_get_ipv6_pinfo(pinfo);
hopopts = (exthdr_proto == proto_ipv6_hopopts);
len = (tvb_get_guint8(tvb, offset + 1) + 1) << 3;
offset_end = offset + len;
/* !!! specify length */
ti = proto_tree_add_item(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_append_text(ti, " bytes");
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);
pi = proto_tree_add_none_format(exthdr_tree, hf_ipv6_opt, tvb, offset, 2 + opt_len,
"%s", val_to_str_ext(opt_type, &ipv6_opt_type_vals_ext, "Unknown IPv6 Option (%u)"));
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;
}
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, hopopts, ipv6_pinfo->ip6_plen);
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_QUICKSTART:
offset = dissect_opt_quickstart(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len, iph->ip_ttl);
break;
case IP6OPT_CALIPSO:
offset = dissect_opt_calipso(tvb, offset, pinfo, opt_tree, &opt_ti, opt_len);
break;
case IP6OPT_SMF_DPD:
/* TODO: Dissect SMF_DPD */
offset = dissect_opt_unknown(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_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;
}
}
return len;
}
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_ip *)data, proto_ipv6_hopopts);
}
static int
dissect_dstopts(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
col_append_sep_str(pinfo->cinfo, COL_INFO, " , ", "IPv6 destination options");
return dissect_opts(tvb, 0, tree, pinfo, (ws_ip *)data, proto_ipv6_dstopts);
}
static gboolean
ipv6_check_jumbo_plen(tvbuff_t *tvb, gint offset, packet_info *pinfo)
{
gint offset_end, opt_type, opt_len;
guint32 jumbo_plen;
ipv6_pinfo_t *ipv6_pinfo;
offset_end = offset + ((tvb_get_guint8(tvb, offset + 1) +1) * 8);
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) {
ipv6_pinfo = p_get_ipv6_pinfo(pinfo);
ipv6_pinfo->jumbo_plen = jumbo_plen;
return TRUE;
}
return FALSE;
}
offset += opt_len;
}
return FALSE;
}
static int
dissect_ipv6(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *ipv6_tree, *ipv6_exthdr_tree, *pt;
proto_item *ipv6_item, *ti, *pi;
proto_item *ti_ipv6_plen = NULL, *ti_ipv6_version;
guint8 tfc;
guint8 nxt_saved;
int advance;
int offset;
guint reported_plen;
tvbuff_t *next_tvb, *options_tvb;
gboolean save_fragmented;
gboolean show_data = FALSE, loop = TRUE;
guint8 *mac_addr;
const char *name;
dissector_handle_t nxt_handle;
address addr;
ipv6_pinfo_t *ipv6_pinfo;
int version;
/* Provide as much IP header information as possible as some dissectors
in the ip.proto dissector table may need it */
ws_ip iph;
struct ws_ip6_hdr *ipv6;
offset = 0;
ipv6_pinfo = wmem_new0(wmem_packet_scope(), ipv6_pinfo_t);
p_add_proto_data(pinfo->pool, pinfo, proto_ipv6, IPV6_PROTO_PINFO, ipv6_pinfo);
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_exthdr_under_root ? IPv6_HDR_SIZE : -1, ENC_NA);
ipv6_tree = proto_item_add_subtree(ipv6_item, ett_ipv6_proto);
/* Validate IP version (6) */
version = TVB_IPv6_HDR_VERS(tvb, offset + IP6H_CTL_VFC);
ti_ipv6_version = proto_tree_add_item(ipv6_tree, hf_ipv6_version, tvb,
offset + IP6H_CTL_VFC, 1, 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_FLOW, 4, ENC_BIG_ENDIAN);
tfc = TVB_IPv6_HDR_TCLS(tvb, offset + IP6H_CTL_FLOW);
proto_item_append_text(ti, " (DSCP: %s, ECN: %s)",
val_to_str_ext_const(IPDSFIELD_DSCP(tfc), &dscp_short_vals_ext, "Unknown"),
val_to_str_ext_const(IPDSFIELD_ECN(tfc), &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_FLOW, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(pt, hf_ipv6_tclass_ecn, tvb,
offset + IP6H_CTL_FLOW, 4, ENC_BIG_ENDIAN);
/* Set DSCP column */
col_add_str(pinfo->cinfo, COL_DSCP_VALUE,
val_to_str_ext(IPDSFIELD_DSCP(tfc), &dscp_short_vals_ext, "%u"));
proto_tree_add_item(ipv6_tree, hf_ipv6_flow, tvb,
offset + IP6H_CTL_FLOW, 4, ENC_BIG_ENDIAN);
ti_ipv6_plen = proto_tree_add_item(ipv6_tree, hf_ipv6_plen, tvb,
offset + IP6H_CTL_PLEN, 2, ENC_BIG_ENDIAN);
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);
if (tree) {
/* Add the different items for the source address */
proto_tree_add_item(ipv6_tree, hf_ipv6_src, tvb,
offset + IP6H_SRC, IPv6_ADDR_SIZE, ENC_NA);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_addr, tvb,
offset + IP6H_SRC, IPv6_ADDR_SIZE, ENC_NA);
PROTO_ITEM_SET_HIDDEN(ti);
set_address_tvb(&addr, AT_IPv6, IPv6_ADDR_SIZE, tvb, offset + IP6H_SRC);
if (ipv6_summary_in_tree) {
proto_item_append_text(ipv6_item, ", Src: %s", address_with_resolution_to_str(wmem_packet_scope(), &addr));
}
name = address_to_display(wmem_packet_scope(), &addr);
ti = proto_tree_add_string(ipv6_tree, hf_ipv6_src_host, tvb,
offset + IP6H_SRC, IPv6_ADDR_SIZE, name);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_string(ipv6_tree, hf_ipv6_host, tvb,
offset + IP6H_SRC, IPv6_ADDR_SIZE, name);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
/* Extract embedded (IPv6 and MAC) address information */
if (tvb_get_ntohs(tvb, offset + IP6H_SRC) == 0x2002) { /* RFC 3056 section 2 */
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_src_6to4_gateway_ipv4, tvb,
offset + IP6H_SRC + 2, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_src_6to4_sla_id, tvb,
offset + IP6H_SRC + 6, 2, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_6to4_gateway_ipv4, tvb,
offset + IP6H_SRC + 2, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_6to4_sla_id, tvb,
offset + IP6H_SRC + 6, 2, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
} else if (tvb_get_ntohl(tvb, offset + IP6H_SRC) == 0x20010000) { /* RFC 4380 section 4 */
guint16 mapped_port = tvb_get_ntohs(tvb, offset + IP6H_SRC + 10) ^ 0xffff;
guint32 client_v4 = tvb_get_ipv4(tvb, offset + IP6H_SRC + 12) ^ 0xffffffff;
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_src_teredo_server_ipv4, tvb,
offset + IP6H_SRC + 4, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_uint(ipv6_tree, hf_ipv6_src_teredo_port, tvb,
offset + IP6H_SRC + 10, 2, mapped_port);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_ipv4(ipv6_tree, hf_ipv6_src_teredo_client_ipv4, tvb,
offset + IP6H_SRC + 12, 4, client_v4);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_teredo_server_ipv4, tvb,
offset + IP6H_SRC + 4, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_uint(ipv6_tree, hf_ipv6_teredo_port, tvb,
offset + IP6H_SRC + 10, 2, mapped_port);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_ipv4(ipv6_tree, hf_ipv6_teredo_client_ipv4, tvb,
offset + IP6H_SRC + 12, 4, client_v4);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
}
if (tvb_get_guint8(tvb, offset + IP6H_SRC + 8) & 0x02 && tvb_get_ntohs(tvb, offset + IP6H_SRC + 11) == 0xfffe) { /* RFC 4291 appendix A */
mac_addr = (guint8 *)wmem_alloc(wmem_packet_scope(), 6);
tvb_memcpy(tvb, mac_addr, offset + IP6H_SRC + 8, 3);
tvb_memcpy(tvb, mac_addr+3, offset+ IP6H_SRC + 13, 3);
mac_addr[0] &= ~0x02;
ti = proto_tree_add_ether(ipv6_tree, hf_ipv6_src_sa_mac, tvb,
offset + IP6H_SRC + 8, 6, mac_addr);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_ether(ipv6_tree, hf_ipv6_sa_mac, tvb,
offset + IP6H_SRC + 8, 6, mac_addr);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
} else if ((tvb_get_ntohl(tvb, offset + IP6H_SRC + 8) & 0xfcffffff) == 0x00005efe) { /* RFC 5214 section 6.1 */
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_src_isatap_ipv4, tvb,
offset + IP6H_SRC + 12, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_isatap_ipv4, tvb,
offset + IP6H_SRC + 12, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
}
/* Add different items for the destination address */
proto_tree_add_item(ipv6_tree, hf_ipv6_dst, tvb,
offset + IP6H_DST, IPv6_ADDR_SIZE, ENC_NA);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_addr, tvb,
offset + IP6H_DST, IPv6_ADDR_SIZE, ENC_NA);
PROTO_ITEM_SET_HIDDEN(ti);
set_address_tvb(&addr, AT_IPv6, IPv6_ADDR_SIZE, tvb, offset + IP6H_DST);
if (ipv6_summary_in_tree) {
proto_item_append_text(ipv6_item, ", Dst: %s", address_with_resolution_to_str(wmem_packet_scope(), &addr));
}
name = address_to_display(wmem_packet_scope(), &addr);
ti = proto_tree_add_string(ipv6_tree, hf_ipv6_dst_host, tvb,
offset + IP6H_DST, IPv6_ADDR_SIZE, name);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_string(ipv6_tree, hf_ipv6_host, tvb,
offset + IP6H_DST, IPv6_ADDR_SIZE, name);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
/* Extract embedded (IPv6 and MAC) address information */
if (tvb_get_ntohs(tvb, offset + IP6H_DST) == 0x2002) { /* RFC 3056 section 2 */
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_dst_6to4_gateway_ipv4, tvb,
offset + IP6H_DST + 2, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_dst_6to4_sla_id, tvb,
offset + IP6H_DST + 6, 2, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_6to4_gateway_ipv4, tvb,
offset + IP6H_DST + 2, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_6to4_sla_id, tvb,
offset + IP6H_DST + 6, 2, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
} else if (tvb_get_ntohl(tvb, offset + IP6H_DST) == 0x20010000) { /* RFC 4380 section 4 */
guint16 mapped_port = tvb_get_ntohs(tvb, offset + IP6H_DST + 10) ^ 0xffff;
guint32 client_v4 = tvb_get_ipv4(tvb, offset + IP6H_DST + 12) ^ 0xffffffff;
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_dst_teredo_server_ipv4, tvb,
offset + IP6H_DST + 4, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_uint(ipv6_tree, hf_ipv6_dst_teredo_port, tvb,
offset + IP6H_DST + 10, 2, mapped_port);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_ipv4(ipv6_tree, hf_ipv6_dst_teredo_client_ipv4, tvb,
offset + IP6H_DST + 12, 4, client_v4);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_teredo_server_ipv4, tvb,
offset + IP6H_DST + 4, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_uint(ipv6_tree, hf_ipv6_teredo_port, tvb,
offset + IP6H_DST + 10, 2, mapped_port);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
ti = proto_tree_add_ipv4(ipv6_tree, hf_ipv6_teredo_client_ipv4, tvb,
offset + IP6H_DST + 12, 4, client_v4);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
}
if (tvb_get_guint8(tvb, offset + IP6H_DST + 8) & 0x02 && tvb_get_ntohs(tvb, offset + IP6H_DST + 11) == 0xfffe) { /* RFC 4291 appendix A */
mac_addr = (guint8 *)wmem_alloc(wmem_packet_scope(), 6);
tvb_memcpy(tvb, mac_addr, offset + IP6H_DST + 8, 3);
tvb_memcpy(tvb, mac_addr+3, offset+ IP6H_DST + 13, 3);
mac_addr[0] &= ~0x02;
ti = proto_tree_add_ether(ipv6_tree, hf_ipv6_dst_sa_mac, tvb,
offset + IP6H_DST + 8, 6, mac_addr);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_ether(ipv6_tree, hf_ipv6_sa_mac, tvb,
offset + IP6H_DST + 8, 6, mac_addr);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
} else if ((tvb_get_ntohl(tvb, offset + IP6H_DST + 8) & 0xfcffffff) == 0x00005efe) { /* RFC 5214 section 6.1 */
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_dst_isatap_ipv4, tvb,
offset + IP6H_DST + 12, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_item(ipv6_tree, hf_ipv6_isatap_ipv4, tvb,
offset + IP6H_DST + 12, 4, ENC_BIG_ENDIAN);
PROTO_ITEM_SET_GENERATED(ti);
PROTO_ITEM_SET_HIDDEN(ti);
}
}
alloc_address_tvb(pinfo->pool, &pinfo->net_src, AT_IPv6, IPv6_ADDR_SIZE, tvb, offset + IP6H_SRC);
copy_address_shallow(&pinfo->src, &pinfo->net_src);
alloc_address_tvb(pinfo->pool, &pinfo->net_dst, AT_IPv6, IPv6_ADDR_SIZE, tvb, offset + IP6H_DST);
copy_address_shallow(&pinfo->dst, &pinfo->net_dst);
/* We have an IPv6 header with valid length */
ipv6 = (struct ws_ip6_hdr *)tvb_memdup(wmem_packet_scope(), tvb, offset, IPv6_HDR_SIZE);
#ifdef HAVE_GEOIP_V6
if (tree && ipv6_use_geoip) {
add_geoip_info(ipv6_tree, tvb, offset, &ipv6->ip6_src, &ipv6->ip6_dst);
}
#endif
/* Fill in IP fields for potential subdissectors */
memset(&iph, 0, sizeof(iph));
iph.ip_v_hl = IPv6_HDR_VERS(ipv6);
iph.ip_tos = IPv6_HDR_TCLS(ipv6);
iph.ip_len = g_ntohs(ipv6->ip6_plen);
iph.ip_nxt = ipv6->ip6_nxt;
iph.ip_ttl = ipv6->ip6_hlim;
copy_address_shallow(&iph.ip_src, &pinfo->src);
copy_address_shallow(&iph.ip_dst, &pinfo->dst);
ipv6_pinfo->jumbo_plen = 0;
ipv6_pinfo->ip6_plen = g_ntohs(ipv6->ip6_plen);
if (ipv6_exthdr_under_root) {
ipv6_exthdr_tree = tree;
} else {
ipv6_exthdr_tree = ipv6_tree;
}
/* Save next header value for Decode As dialog */
p_add_proto_data(pinfo->pool, pinfo, proto_ipv6,
(pinfo->curr_layer_num<<8) | IPV6_PROTO_NXT_HDR, GUINT_TO_POINTER(iph.ip_nxt));
offset += IPv6_HDR_SIZE;
/* Check for Jumbo option */
if (iph.ip_len == 0 && iph.ip_nxt == IP_PROTO_HOPOPTS) {
if (ipv6_check_jumbo_plen(tvb, offset, pinfo)) {
proto_item_append_text(ti_ipv6_plen, " (Jumbogram)");
iph.ip_len = ipv6_pinfo->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 && iph.ip_len > 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);
}
/* Adjust the length of this tvbuff to include only the IPv6 datagram. */
set_actual_length(tvb, iph.ip_len + IPv6_HDR_SIZE);
save_fragmented = pinfo->fragmented;
while (loop && !show_data) {
advance = 0;
options_tvb = tvb_new_subset_remaining(tvb, offset);
nxt_handle = dissector_get_uint_handle(ipv6_next_header_dissector_table, iph.ip_nxt);
if (nxt_handle != NULL) {
advance = call_dissector_with_data(nxt_handle, options_tvb, pinfo, ipv6_exthdr_tree, &iph);
}
if (advance > 0) {
nxt_saved = iph.ip_nxt;
iph.ip_nxt = tvb_get_guint8(tvb, offset);
offset += advance;
iph.ip_len -= advance;
if (nxt_saved == IP_PROTO_FRAGMENT) {
if ((ipv6_pinfo->frag_off != 0) || ipv6_pinfo->frag_flg) {
show_data = ipv6_reassemble_do(&tvb, &offset, pinfo, ipv6_tree, iph.ip_len);
}
}
} else if (iph.ip_nxt == IP_PROTO_NONE) {
col_set_str(pinfo->cinfo, COL_INFO, "IPv6 no next header");
show_data = TRUE;
} else {
loop = FALSE;
}
}
if (!ipv6_exthdr_under_root) {
proto_item_set_len (ipv6_item, offset);
}
/* collect packet info */
p_add_proto_data(pinfo->pool, pinfo, proto_ipv6, (pinfo->curr_layer_num<<8) | IPV6_PROTO_VALUE, GUINT_TO_POINTER(iph.ip_nxt));
tap_queue_packet(ipv6_tap, pinfo, ipv6);
/* Get a tvbuff for the payload. */
next_tvb = tvb_new_subset_remaining(tvb, offset);
if (show_data) {
/* COL_INFO already set */
call_data_dissector(next_tvb, pinfo, tree);
}
else {
/* First fragment and not reassembling, not fragmented, or already reassembled. */
/* Dissect what we have here. */
if (!ip_try_dissect(try_heuristic_first, next_tvb, pinfo, tree, &iph)) {
/* Unknown protocol. */
col_add_fstr(pinfo->cinfo, COL_INFO, "%s (%u)", ipprotostr(iph.ip_nxt), iph.ip_nxt);
call_data_dissector(next_tvb, pinfo, tree);
}
}
pinfo->fragmented = save_fragmented;
return tvb_captured_length(tvb);
}
void
proto_register_ipv6(void)
{
static hf_register_info hf_ipv6[] = {
{ &hf_ipv6_version,
{ "Version", "ipv6.version",
FT_UINT8, BASE_DEC, NULL, 0xF0,
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_UINT32, BASE_HEX, NULL, 0x000FFFFF,
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", "ipv6.src",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Source IPv6 Address", HFILL }
},
{ &hf_ipv6_src_host,
{ "Source Host", "ipv6.src_host",
FT_STRING, BASE_NONE, NULL, 0x0,
"Source IPv6 Host", HFILL }
},
{ &hf_ipv6_src_sa_mac,
{ "Source SA MAC", "ipv6.src_sa_mac",
FT_ETHER, BASE_NONE, NULL, 0x0,
"Source IPv6 Stateless Autoconfiguration MAC Address", 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_dst,
{ "Destination", "ipv6.dst",
FT_IPv6, BASE_NONE, NULL, 0x0,
"Destination IPv6 Address", HFILL }
},
{ &hf_ipv6_dst_host,
{ "Destination Host", "ipv6.dst_host",
FT_STRING, BASE_NONE, NULL, 0x0,
"Destination IPv6 Host", HFILL }
},
{ &hf_ipv6_dst_sa_mac,
{ "Destination SA MAC", "ipv6.dst_sa_mac",
FT_ETHER, BASE_NONE, NULL, 0x0,
"Destination IPv6 Stateless Autoconfiguration MAC Address", 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_addr,
{ "Source or Destination Address", "ipv6.addr",
FT_IPv6, 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_sa_mac,
{ "SA MAC", "ipv6.sa_mac",
FT_ETHER, BASE_NONE, NULL, 0x0,
"IPv6 Stateless Autoconfiguration MAC Address", 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 }
},
#ifdef HAVE_GEOIP_V6
{ &hf_geoip_country,
{ "Source or Destination GeoIP Country", "ipv6.geoip.country",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_city,
{ "Source or Destination GeoIP City", "ipv6.geoip.city",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_org,
{ "Source or Destination GeoIP Organization", "ipv6.geoip.org",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_isp,
{ "Source or Destination GeoIP ISP", "ipv6.geoip.isp",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_asnum,
{ "Source or Destination GeoIP AS Number", "ipv6.geoip.asnum",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_lat,
{ "Source or Destination GeoIP Latitude", "ipv6.geoip.lat",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_lon,
{ "Source or Destination GeoIP Longitude", "ipv6.geoip.lon",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_country,
{ "Source GeoIP Country", "ipv6.geoip.src_country",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_city,
{ "Source GeoIP City", "ipv6.geoip.src_city",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_org,
{ "Source GeoIP Organization", "ipv6.geoip.src_org",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_isp,
{ "Source GeoIP ISP", "ipv6.geoip.src_isp",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_asnum,
{ "Source GeoIP AS Number", "ipv6.geoip.src_asnum",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_lat,
{ "Source GeoIP Latitude", "ipv6.geoip.src_lat",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_src_lon,
{ "Source GeoIP Longitude", "ipv6.geoip.src_lon",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_country,
{ "Destination GeoIP Country", "ipv6.geoip.dst_country",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_city,
{ "Destination GeoIP City", "ipv6.geoip.dst_city",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_org,
{ "Destination GeoIP Organization", "ipv6.geoip.dst_org",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_isp,
{ "Destination GeoIP ISP", "ipv6.geoip.dst_isp",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_asnum,
{ "Destination GeoIP AS Number", "ipv6.geoip.dst_asnum",
FT_STRING, STR_UNICODE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_lat,
{ "Destination GeoIP Latitude", "ipv6.geoip.dst_lat",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
{ &hf_geoip_dst_lon,
{ "Destination GeoIP Longitude", "ipv6.geoip.dst_lon",
FT_DOUBLE, BASE_NONE, NULL, 0x0,
NULL, HFILL }
},
#endif /* HAVE_GEOIP_V6 */
{ &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_rtalert,
{ "Router Alert", "ipv6.opt.router_alert",
FT_UINT16, BASE_DEC, VALS(rtalertvals), 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_UINT8, 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_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_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, NULL, 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, NULL, 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, NULL, 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, NULL, 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 }
},
/* 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_first_seg,
{ "First segment", "ipv6.routing.srh.first_segment",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Index of the first segment", HFILL }
},
{ &hf_ipv6_routing_srh_flags,
{ "Flags", "ipv6.routing.srh.flags",
FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL }
},
{ &hf_ipv6_routing_srh_flag_c,
{ "Cleanup", "ipv6.routing.srh.flag_c",
FT_BOOLEAN, 16, TFS(&tfs_true_false), 0x8000,
NULL, HFILL }
},
{ &hf_ipv6_routing_srh_flag_p,
{ "Protected", "ipv6.routing.srh.flag_p",
FT_BOOLEAN, 16, TFS(&tfs_true_false), 0x4000,
NULL, HFILL }
},
{ &hf_ipv6_routing_srh_flag_o,
{ "OAM", "ipv6.routing.srh.flag_o",
FT_BOOLEAN, 16, TFS(&tfs_true_false), 0x2000,
NULL, HFILL }
},
{ &hf_ipv6_routing_srh_flag_a,
{ "Alert", "ipv6.routing.srh.flag_a",
FT_BOOLEAN, 16, TFS(&tfs_present_not_present), 0x1000,
NULL, HFILL }
},
{ &hf_ipv6_routing_srh_flag_h,
{ "HMAC", "ipv6.routing.srh.flag_h",
FT_BOOLEAN, 16, TFS(&tfs_present_not_present), 0x0800,
NULL, HFILL }
},
{ &hf_ipv6_routing_srh_flag_unused,
{ "Unused", "ipv6.routing.srh.flag_unused",
FT_UINT16, BASE_HEX, NULL, 0x07FF,
NULL, HFILL }
},
{ &hf_ipv6_routing_srh_reserved,
{ "Reserved", "ipv6.routing.srh.reserved",
FT_BYTES, BASE_NONE, NULL, 0x0,
"Must be zero", HFILL }
},
{ &hf_ipv6_routing_srh_addr,
{ "Address", "ipv6.routing.srh.addr",
FT_IPv6, BASE_NONE, 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_traffic_class,
#ifdef HAVE_GEOIP_V6
&ett_geoip_info,
#endif /* HAVE_GEOIP_V6 */
&ett_ipv6_opt,
&ett_ipv6_opt_type,
&ett_ipv6_opt_rpl,
&ett_ipv6_opt_mpl,
&ett_ipv6_opt_dff_flags,
&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_flags,
&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_PROTOCOL, 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_ERROR,
"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_ERROR,
"Jumbo Payload option present and jumbo length < 65536", EXPFILL }
},
{ &ei_ipv6_opt_jumbo_fragment,
{ "ipv6.opt.jumbo.fragment", PI_PROTOCOL, PI_ERROR,
"Jumbo Payload option cannot be used with a fragment header", EXPFILL }
},
{ &ei_ipv6_opt_jumbo_not_hopbyhop,
{ "ipv6.opt.jumbo.not_hopbyhop", PI_PROTOCOL, PI_ERROR,
"Jumbo Payload option must be a hop-by-hop option", EXPFILL }
},
{ &ei_ipv6_opt_invalid_len,
{ "ipv6.opt.invalid_len", PI_MALFORMED, PI_ERROR,
"Invalid IPv6 option length", 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_bogus_ipv6_version,
{ "ipv6.bogus_ipv6_version", PI_PROTOCOL, PI_ERROR,
"Bogus IP version", EXPFILL }
},
{ &ei_ipv6_invalid_header,
{ "ipv6.invalid_header", PI_MALFORMED, PI_ERROR,
"Invalid IPv6 header", 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_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_ERROR,
"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_ERROR,
"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_ERROR,
"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_ERROR,
"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_WARN,
"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_ERROR,
"IPv6 Routing Header segments left field must not exceed address count", EXPFILL }
},
{ &ei_ipv6_routing_not_implemented,
{ "ipv6.routing.not_implemented", PI_UNDECODED, PI_NOTE,
"Undecoded IPv6 routing header field", 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", "Network", "ip.proto", 1, 0, &ipv6_da_values, NULL, NULL,
decode_as_default_populate_list, decode_as_default_reset, decode_as_default_change, NULL};
static build_valid_func ipv6_next_header_da_build_value[1] = {ipv6_next_header_value};
static decode_as_value_t ipv6_next_header_da_values = {ipv6_next_header_prompt, 1, ipv6_next_header_da_build_value};
static decode_as_t ipv6_next_header_da = {"ipv6", "IPv6 Next Header", "ipv6.nxt", 1, 0, &ipv6_next_header_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));
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));
ipv6_next_header_dissector_table = register_dissector_table("ipv6.nxt", "IPv6 Next Header", proto_ipv6, FT_UINT32, BASE_DEC, DISSECTOR_TABLE_NOT_ALLOW_DUPLICATE);
register_capture_dissector_table("ipv6.nxt", "IPv6 Next Header");
/* 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);
#ifdef HAVE_GEOIP_V6
prefs_register_bool_preference(ipv6_module, "use_geoip" ,
"Enable GeoIP lookups",
"Whether to look up IPv6 addresses in each GeoIP database we have loaded",
&ipv6_use_geoip);
#endif /* HAVE_GEOIP_V6 */
/* RPL Strict Header Checking */
prefs_register_bool_preference(ipv6_module, "perform_strict_rpl_srh_rfc_checking",
"Perform strict checking for adherence to the RFC for RPL Source Routing Headers (RFC 6554)",
"Whether to check that all RPL Source Routed packets 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);
register_dissector("ipv6", dissect_ipv6, proto_ipv6);
register_init_routine(ipv6_reassemble_init);
register_cleanup_routine(ipv6_reassemble_cleanup);
ipv6_tap = register_tap("ipv6");
register_decode_as(&ipv6_da);
register_decode_as(&ipv6_next_header_da);
register_conversation_table(proto_ipv6, TRUE, ipv6_conversation_packet, ipv6_hostlist_packet);
register_conversation_filter("ipv6", "IPv6", ipv6_filter_valid, ipv6_build_filter);
}
void
proto_reg_handoff_ipv6(void)
{
dissector_handle_t ipv6_handle;
dissector_handle_t ipv6_hopopts_handle;
dissector_handle_t ipv6_routing_handle;
dissector_handle_t ipv6_fraghdr_handle;
dissector_handle_t ipv6_dstopts_handle;
ipv6_handle = find_dissector("ipv6");
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", 0x57, ipv6_handle); /* IPv6, RFC4385 clause 6. */
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_for_decode_as("udp.port", ipv6_handle);
ipv6_hopopts_handle = create_dissector_handle(dissect_hopopts, proto_ipv6_hopopts);
dissector_add_uint("ipv6.nxt", IP_PROTO_HOPOPTS, ipv6_hopopts_handle);
ipv6_routing_handle = create_dissector_handle(dissect_routing6, proto_ipv6_routing);
dissector_add_uint("ipv6.nxt", IP_PROTO_ROUTING, ipv6_routing_handle);
ipv6_fraghdr_handle = create_dissector_handle(dissect_fraghdr, proto_ipv6_fraghdr);
dissector_add_uint("ipv6.nxt", IP_PROTO_FRAGMENT, ipv6_fraghdr_handle);
ipv6_dstopts_handle = create_dissector_handle(dissect_dstopts, proto_ipv6_dstopts);
dissector_add_uint("ipv6.nxt", IP_PROTO_DSTOPTS, ipv6_dstopts_handle);
ip_dissector_table = find_dissector_table("ip.proto");
register_capture_dissector("ethertype", ETHERTYPE_IPv6, capture_ipv6, proto_ipv6);
register_capture_dissector("enc", BSD_AF_INET6_BSD, capture_ipv6, proto_ipv6);
}
/*
* 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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