forked from osmocom/wireshark
2963 lines
109 KiB
C
2963 lines
109 KiB
C
/* packet-isis-lsp.c
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* Routines for decoding isis lsp packets and their CLVs
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*
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* $Id$
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* Stuart Stanley <stuarts@mxmail.net>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/*
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* Copyright 2011, Malgi Nikitha Vivekananda <malgi.nikitha@ipinfusion.com>
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* Krishnamurthy Mayya <krishnamurthy.mayya@ipinfusion.com>
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* - Decoding for Router Capability TLV and associated subTLVs as per RFC 6326
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* - Decoding for Group Address TLV and associated subTLVs as per RFC 6326
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*/
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#include "config.h"
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/expert.h>
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#include "packet-osi.h"
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#include "packet-isis.h"
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#include "packet-isis-clv.h"
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#include <epan/addr_resolv.h>
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#include <epan/addr_and_mask.h>
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/*
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* Declarations for L1/L2 LSP base header.
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*/
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/* P | ATT | HIPPITY | DS FIELD description */
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#define ISIS_LSP_PARTITION_MASK 0x80
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#define ISIS_LSP_PARTITION_SHIFT 7
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#define ISIS_LSP_PARTITION(info) (((info) & ISIS_LSP_PARTITION_MASK) >> ISIS_LSP_PARTITION_SHIFT)
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#define ISIS_LSP_ATT_MASK 0x78
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#define ISIS_LSP_ATT_SHIFT 3
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#define ISIS_LSP_ATT(info) (((info) & ISIS_LSP_ATT_MASK) >> ISIS_LSP_ATT_SHIFT)
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#define ISIS_LSP_ATT_ERROR(info) ((info) >> 3)
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#define ISIS_LSP_ATT_EXPENSE(info) (((info) >> 2) & 1)
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#define ISIS_LSP_ATT_DELAY(info) (((info) >> 1) & 1)
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#define ISIS_LSP_ATT_DEFAULT(info) ((info) & 1)
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#define ISIS_LSP_HIPPITY_MASK 0x04
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#define ISIS_LSP_HIPPITY_SHIFT 2
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#define ISIS_LSP_HIPPITY(info) (((info) & ISIS_LSP_HIPPITY_MASK) >> ISIS_LSP_HIPPITY_SHIFT)
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#define ISIS_LSP_IS_TYPE_MASK 0x03
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#define ISIS_LSP_IS_TYPE(info) ((info) & ISIS_LSP_IS_TYPE_MASK)
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#define ISIS_LSP_MT_MSHIP_RES_MASK 0xF000
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#define ISIS_LSP_MT_MSHIP_ID_MASK 0x0FFF
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#define ISIS_LSP_TYPE_UNUSED0 0
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#define ISIS_LSP_TYPE_LEVEL_1 1
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#define ISIS_LSP_TYPE_UNUSED2 2
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#define ISIS_LSP_TYPE_LEVEL_2 3
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#define ISIS_LSP_ATTACHED_NONE 0
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#define ISIS_LSP_ATTACHED_DEFAULT 1
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#define ISIS_LSP_ATTACHED_DELAY 2
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#define ISIS_LSP_ATTACHED_EXPENSE 4
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#define ISIS_LSP_ATTACHED_ERROR 8
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#define ISIS_LSP_CLV_METRIC_SUPPORTED(x) ((x)&0x80)
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#define ISIS_LSP_CLV_METRIC_IE(x) ((x)&0x40)
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#define ISIS_LSP_CLV_METRIC_RESERVED(x) ((x)&0x40)
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#define ISIS_LSP_CLV_METRIC_UPDOWN(x) ((x)&0x80)
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#define ISIS_LSP_CLV_METRIC_VALUE(x) ((x)&0x3f)
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/* Sub-TLVs under Router Capability TLV
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As per RFC 6326 section 2.3 */
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#define TRILL_VERSION 12
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#define NICKNAME 6
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#define TREES 7
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#define TREE_IDENTIFIER 8
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#define TREES_USED_IDENTIFIER 9
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#define INTERESTED_VLANS 10
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#define VLAN_GROUP 13
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/*Sub-TLVs under Group Address TLV*/
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#define GRP_MAC_ADDRESS 1
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#define FP_HMAC_SWID_MASK G_GINT64_CONSTANT(0xFFFF00000000)
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#define FP_HMAC_SSWID_MASK G_GINT64_CONSTANT(0x0000FFFF0000)
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#define FP_HMAC_LID_MASK G_GINT64_CONSTANT(0x00000000FFFF)
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static int proto_isis_lsp = -1;
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/* lsp packets */
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static int hf_isis_lsp_pdu_length = -1;
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static int hf_isis_lsp_remaining_life = -1;
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static int hf_isis_lsp_sequence_number = -1;
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static int hf_isis_lsp_lsp_id = -1;
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static int hf_isis_lsp_hostname = -1;
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static int hf_isis_lsp_checksum = -1;
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static int hf_isis_lsp_checksum_bad = -1;
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static int hf_isis_lsp_checksum_good = -1;
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static int hf_isis_lsp_clv_ipv4_int_addr = -1;
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static int hf_isis_lsp_clv_ipv6_int_addr = -1;
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static int hf_isis_lsp_clv_te_router_id = -1;
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static int hf_isis_lsp_clv_mt = -1;
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static int hf_isis_lsp_p = -1;
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static int hf_isis_lsp_att = -1;
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static int hf_isis_lsp_hippity = -1;
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static int hf_isis_lsp_is_type = -1;
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static int hf_isis_lsp_root_id = -1;
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static int hf_isis_lsp_spb_link_metric = -1;
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static int hf_isis_lsp_spb_port_count = -1;
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static int hf_isis_lsp_spb_port_id = -1;
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static int hf_isis_lsp_spb_sr_bit = -1;
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static int hf_isis_lsp_spb_spvid = -1;
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/* Generated from convert_proto_tree_add_text.pl */
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static int hf_isis_lsp_grp_address_length = -1;
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static int hf_isis_lsp_mt_cap_spb_instance_v = -1;
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static int hf_isis_lsp_mt_cap_spb_instance_cist_external_root_path_cost = -1;
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static int hf_isis_lsp_rt_capable_tree_used_id_starting_tree_no = -1;
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static int hf_isis_lsp_mt_cap_spb_instance_bridge_priority = -1;
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static int hf_isis_lsp_rt_capable_trees_length = -1;
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static int hf_isis_lsp_mt_cap_spbm_service_identifier_base_vid = -1;
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static int hf_isis_lsp_64_bit_administrative_tag = -1;
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static int hf_isis_lsp_grp_address_number_of_sources = -1;
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static int hf_isis_lsp_ext_is_reachability_traffic_engineering_default_metric = -1;
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static int hf_isis_lsp_grp_address_group_address = -1;
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static int hf_isis_lsp_rt_capable_tree_root_id_nickname = -1;
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static int hf_isis_lsp_ext_is_reachability_ipv4_interface_address = -1;
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static int hf_isis_lsp_ext_ip_reachability_metric = -1;
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static int hf_isis_lsp_ext_ip_reachability_ipv4_prefix = -1;
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static int hf_isis_lsp_eis_neighbors_es_neighbor = -1;
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static int hf_isis_lsp_rt_capable_interested_vlans_length = -1;
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static int hf_isis_lsp_expense_metric = -1;
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static int hf_isis_lsp_ext_is_reachability_link_remote_identifier = -1;
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static int hf_isis_lsp_rt_capable_vlan_group_secondary_vlan_id = -1;
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static int hf_isis_lsp_grp_address_vlan_id = -1;
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static int hf_isis_lsp_rt_capable_trill_length = -1;
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static int hf_isis_lsp_rt_capable_tree_root_id_starting_tree_no = -1;
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static int hf_isis_lsp_rt_capable_interested_vlans_nickname = -1;
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static int hf_isis_lsp_rt_capable_nickname_length = -1;
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static int hf_isis_lsp_ip_reachability_ipv4_prefix = -1;
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static int hf_isis_lsp_grp_address_topology_id = -1;
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static int hf_isis_lsp_ext_is_reachability_ipv4_neighbor_address = -1;
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static int hf_isis_lsp_rt_capable_vlan_group_nth_secondary_vlan_id = -1;
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static int hf_isis_lsp_ipv6_reachability_reserved_bits = -1;
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static int hf_isis_lsp_eis_neighbors_default_metric = -1;
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static int hf_isis_lsp_mt_cap_spb_instance_cist_root_identifier = -1;
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static int hf_isis_lsp_rt_capable_tree_used_id_nickname = -1;
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static int hf_isis_lsp_grp_address_source_address = -1;
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static int hf_isis_lsp_delay_metric = -1;
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static int hf_isis_lsp_ext_is_reachability_link_local_identifier = -1;
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static int hf_isis_lsp_mt_cap_mtid = -1;
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static int hf_isis_lsp_32_bit_administrative_tag = -1;
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static int hf_isis_lsp_ext_is_reachability_is_neighbor = -1;
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static int hf_isis_lsp_reservable_link_bandwidth = -1;
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static int hf_isis_lsp_rt_capable_vlan_group_primary_vlan_id = -1;
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static int hf_isis_lsp_rt_capable_interested_vlans_multicast_ipv4 = -1;
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static int hf_isis_lsp_rt_capable_interested_vlans_multicast_ipv6 = -1;
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static int hf_isis_lsp_mt_cap_spb_instance_number_of_trees = -1;
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static int hf_isis_lsp_mt_cap_spbm_service_identifier_b_mac = -1;
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static int hf_isis_lsp_ipv6_reachability_distribution = -1;
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static int hf_isis_lsp_ipv6_reachability_distribution_internal = -1;
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static int hf_isis_lsp_ipv6_reachability_metric = -1;
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static int hf_isis_lsp_rt_capable_trees_maximum_nof_trees_to_compute = -1;
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static int hf_isis_lsp_rt_capable_interested_vlans_vlan_start_id = -1;
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static int hf_isis_lsp_rt_capable_nickname_nickname_priority = -1;
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static int hf_isis_lsp_ext_is_reachability_metric = -1;
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static int hf_isis_lsp_default_metric = -1;
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static int hf_isis_lsp_ext_ip_reachability_distribution = -1;
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static int hf_isis_lsp_maximum_link_bandwidth = -1;
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static int hf_isis_lsp_rt_capable_tree_root_id_length = -1;
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static int hf_isis_lsp_rt_capable_nickname_tree_root_priority = -1;
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static int hf_isis_lsp_eis_neighbors_delay_metric = -1;
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static int hf_isis_lsp_rt_capable_trill_maximum_version = -1;
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static int hf_isis_lsp_rt_capable_interested_vlans_afs_lost_counter = -1;
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static int hf_isis_lsp_ipv6_reachability_ipv6_prefix = -1;
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static int hf_isis_lsp_eis_neighbors_error_metric = -1;
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static int hf_isis_lsp_rt_capable_interested_vlans_vlan_end_id = -1;
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static int hf_isis_lsp_error_metric = -1;
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static int hf_isis_lsp_grp_address_number_of_records = -1;
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static int hf_isis_lsp_rt_capable_tree_used_id_length = -1;
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static int hf_isis_lsp_rt_capable_nickname_nickname = -1;
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static int hf_isis_lsp_mt_id_reserved = -1;
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static int hf_isis_lsp_eis_neighbors_is_neighbor = -1;
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static int hf_isis_lsp_mt_id = -1;
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static int hf_isis_lsp_eis_neighbors_reserved = -1;
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static int hf_isis_lsp_ip_reachability_error_metric = -1;
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static int hf_isis_lsp_ip_reachability_delay_metric = -1;
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static int hf_isis_lsp_ip_reachability_expense_metric = -1;
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static int hf_isis_lsp_rt_capable_trees_nof_trees_to_use = -1;
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static int hf_isis_lsp_ip_reachability_default_metric = -1;
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static int hf_isis_lsp_rt_capable_trees_nof_trees_to_compute = -1;
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static int hf_isis_lsp_eis_neighbors_expense_metric = -1;
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static int hf_isis_lsp_rt_capable_vlan_group_length = -1;
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static int hf_isis_lsp_partition_designated_l2_is = -1;
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static int hf_isis_lsp_ip_reachability_default_metric_ie = -1;
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static int hf_isis_lsp_eis_neighbors_default_metric_ie = -1;
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static int hf_isis_lsp_eis_neighbors_error_metric_supported = -1;
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static int hf_isis_lsp_unrsv_bw_priority_level = -1;
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static int hf_isis_lsp_ip_reachability_expense_metric_support = -1;
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static int hf_isis_lsp_mt_cap_overload = -1;
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static int hf_isis_lsp_eis_neighbors_expense_metric_supported = -1;
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static int hf_isis_lsp_ip_reachability_delay_metric_support = -1;
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static int hf_isis_lsp_ip_reachability_error_metric_support = -1;
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static int hf_isis_lsp_mt_cap_spsourceid = -1;
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static int hf_isis_lsp_eis_neighbors_delay_metric_supported = -1;
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static int hf_isis_lsp_eis_neighbors_error_metric_ie = -1;
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static int hf_isis_lsp_eis_neighbors_expense_metric_ie = -1;
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static int hf_isis_lsp_eis_neighbors_delay_metric_ie = -1;
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static int hf_isis_lsp_ip_reachability_delay_metric_ie = -1;
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static int hf_isis_lsp_ip_reachability_distribution = -1;
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static int hf_isis_lsp_ip_reachability_error_metric_ie = -1;
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static int hf_isis_lsp_ip_reachability_expense_metric_ie = -1;
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static gint ett_isis_lsp = -1;
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static gint ett_isis_lsp_info = -1;
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static gint ett_isis_lsp_att = -1;
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static gint ett_isis_lsp_cksum = -1;
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static gint ett_isis_lsp_clv_area_addr = -1;
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static gint ett_isis_lsp_clv_is_neighbors = -1;
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static gint ett_isis_lsp_clv_ext_is_reachability = -1; /* CLV 22 */
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static gint ett_isis_lsp_part_of_clv_ext_is_reachability = -1;
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static gint ett_isis_lsp_subclv_admin_group = -1;
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static gint ett_isis_lsp_subclv_unrsv_bw = -1;
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static gint ett_isis_lsp_subclv_spb_link_metric = -1;
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static gint ett_isis_lsp_clv_unknown = -1;
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static gint ett_isis_lsp_clv_partition_dis = -1;
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static gint ett_isis_lsp_clv_prefix_neighbors = -1;
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static gint ett_isis_lsp_clv_nlpid = -1;
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static gint ett_isis_lsp_clv_hostname = -1;
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static gint ett_isis_lsp_clv_te_router_id = -1;
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static gint ett_isis_lsp_clv_authentication = -1;
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static gint ett_isis_lsp_clv_ip_authentication = -1;
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static gint ett_isis_lsp_clv_ipv4_int_addr = -1;
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static gint ett_isis_lsp_clv_ipv6_int_addr = -1; /* CLV 232 */
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static gint ett_isis_lsp_clv_mt_cap = -1;
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static gint ett_isis_lsp_clv_mt_cap_spb_instance = -1;
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static gint ett_isis_lsp_clv_mt_cap_spbm_service_identifier = -1;
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static gint ett_isis_lsp_clv_ip_reachability = -1;
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static gint ett_isis_lsp_clv_ip_reach_subclv = -1;
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static gint ett_isis_lsp_clv_ext_ip_reachability = -1; /* CLV 135 */
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static gint ett_isis_lsp_part_of_clv_ext_ip_reachability = -1;
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static gint ett_isis_lsp_clv_ipv6_reachability = -1; /* CLV 236 */
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static gint ett_isis_lsp_part_of_clv_ipv6_reachability = -1;
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static gint ett_isis_lsp_clv_mt = -1;
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static gint ett_isis_lsp_clv_mt_is = -1;
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static gint ett_isis_lsp_part_of_clv_mt_is = -1;
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static gint ett_isis_lsp_clv_mt_reachable_IPv4_prefx = -1; /* CLV 235 */
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static gint ett_isis_lsp_clv_mt_reachable_IPv6_prefx = -1; /* CLV 237 */
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static gint ett_isis_lsp_clv_rt_capable_IPv4_prefx = -1; /* CLV 242 */
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static gint ett_isis_lsp_clv_grp_address_IPv4_prefx = -1; /* CLV 142 */
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static gint ett_isis_lsp_clv_mt_cap_spbv_mac_address = -1;
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static expert_field ie_isis_lsp_checksum_bad = EI_INIT;
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static expert_field ei_isis_lsp_short_packet = EI_INIT;
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static expert_field ei_isis_lsp_long_packet = EI_INIT;
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static expert_field ei_isis_lsp_subtlv = EI_INIT;
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static expert_field ei_isis_lsp_authentication = EI_INIT;
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static const value_string isis_lsp_istype_vals[] = {
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{ ISIS_LSP_TYPE_UNUSED0, "Unused 0x0 (invalid)"},
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{ ISIS_LSP_TYPE_LEVEL_1, "Level 1"},
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{ ISIS_LSP_TYPE_UNUSED2, "Unused 0x2 (invalid)"},
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{ ISIS_LSP_TYPE_LEVEL_2, "Level 2"},
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{ 0, NULL } };
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static const true_false_string tfs_up_down = { "Up", "Down" };
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static const true_false_string tfs_notsupported_supported = { "Not Supported", "Supported" };
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static const true_false_string tfs_internal_external = { "Internal", "External" };
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static const true_false_string tfs_external_internal = { "External", "Internal" };
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static void
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fp_get_hmac_addr (guint64 hmac, guint16 *swid, guint16 *sswid, guint16 *lid) {
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if (!swid || !sswid || !lid) {
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return;
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}
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*swid = (guint16) ((hmac & FP_HMAC_SWID_MASK) >> 32);
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*sswid = (guint16) ((hmac & FP_HMAC_SSWID_MASK) >> 16);
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*lid = (guint16) (hmac & FP_HMAC_LID_MASK);
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}
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/*
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* Name: dissect_lsp_mt_id()
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*
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* Description:
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* dissect and display the multi-topology ID value
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*
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* Input:
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* tvbuff_t * : tvbuffer for packet data
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* proto_tree * : protocol display tree to fill out. CAN'T BE NULL
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* int : offset into packet data where we are.
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*
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* Output:
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* void, but we will add to proto tree.
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*/
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static void
|
|
dissect_lsp_mt_id(tvbuff_t *tvb, proto_tree *tree, int offset)
|
|
{
|
|
int mt_block, mt_id;
|
|
const char *mt_desc="";
|
|
|
|
/* fetch two bytes */
|
|
mt_block = tvb_get_ntohs(tvb, offset);
|
|
|
|
proto_tree_add_item(tree, hf_isis_lsp_mt_id_reserved, tvb, offset, 2, ENC_NA);
|
|
|
|
mt_id = mt_block & ISIS_LSP_MT_MSHIP_ID_MASK;
|
|
/*mask out the lower 12 bits */
|
|
switch(mt_id) {
|
|
case 0:
|
|
mt_desc="'standard' topology";
|
|
break;
|
|
case 1:
|
|
mt_desc="IPv4 In-Band Management purposes";
|
|
break;
|
|
case 2:
|
|
mt_desc="IPv6 routing topology";
|
|
break;
|
|
case 3:
|
|
mt_desc="IPv4 multicast routing topology";
|
|
break;
|
|
case 4:
|
|
mt_desc="IPv6 multicast routing topology";
|
|
break;
|
|
default:
|
|
mt_desc=((mt_block & 0x0fff) < 3996) ? "Reserved for IETF Consensus" : "Development, Experimental and Proprietary features";
|
|
}
|
|
|
|
proto_tree_add_uint_format( tree, hf_isis_lsp_mt_id, tvb, offset, 2,
|
|
mt_id, "%s (%d)", mt_desc, mt_id);
|
|
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_metric()
|
|
*
|
|
* Description:
|
|
* Display a metric prefix portion. ISIS has the concept of multple
|
|
* metric per prefix (default, delay, expense, and error). This
|
|
* routine assists other dissectors by adding a single one of
|
|
* these to the display tree..
|
|
*
|
|
* The 8th(msbit) bit in the metric octet is the "supported" bit. The
|
|
* "default" support is required, so we support a "force_supported"
|
|
* flag that tells us that it MUST be zero (zero==supported,
|
|
* so it really should be a "not supported" in the boolean sense)
|
|
* and to display a protocol failure accordingly. Notably,
|
|
* Cisco IOS 12(6) blows this!
|
|
* The 7th bit must be zero (reserved).
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* guint8 : value of the metric.
|
|
* char * : string giving type of the metric.
|
|
* int : force supported. True is the supported bit MUST be zero.
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_metric(tvbuff_t *tvb, proto_tree *tree, int offset, guint8 value,
|
|
const char *pstr, int force_supported )
|
|
{
|
|
int s;
|
|
|
|
if ( !tree ) return;
|
|
|
|
s = ISIS_LSP_CLV_METRIC_SUPPORTED(value);
|
|
proto_tree_add_text(tree, tvb, offset, 1,
|
|
"%s Metric: %s%s %s%d:%d", pstr,
|
|
s ? "Not supported" : "Supported",
|
|
(s && force_supported) ? "(but is required to be)":"",
|
|
ISIS_LSP_CLV_METRIC_RESERVED(value) ? "(reserved bit != 0)":"",
|
|
ISIS_LSP_CLV_METRIC_VALUE(value), value );
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_ip_reachability_clv()
|
|
*
|
|
* Description:
|
|
* Decode an IP reachability CLV. This can be either internal or
|
|
* external (the clv format does not change and which type we are
|
|
* displaying is put there by the dispatcher). All of these
|
|
* are a metric block followed by an IP addr and mask.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_lsp_ip_reachability_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *ntree = NULL;
|
|
guint32 src, mask, bitmask;
|
|
int prefix_len;
|
|
gboolean found_mask = FALSE;
|
|
|
|
while ( length > 0 ) {
|
|
if (length<12) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"short IP reachability (%d vs 12)", length );
|
|
return;
|
|
}
|
|
/*
|
|
* Gotta build a sub-tree for all our pieces
|
|
*/
|
|
if ( tree ) {
|
|
src = tvb_get_ipv4(tvb, offset+4);
|
|
mask = tvb_get_ntohl(tvb, offset+8);
|
|
|
|
/* find out if the mask matches one of 33 possible prefix lengths */
|
|
bitmask = 0xffffffff;
|
|
for(prefix_len = 32; prefix_len >= 0; prefix_len--) {
|
|
if (bitmask==mask) {
|
|
found_mask = TRUE;
|
|
break;
|
|
}
|
|
bitmask = bitmask << 1;
|
|
}
|
|
|
|
/* If we have a discontiguous netmask, dump the mask, otherwise print the prefix_len */
|
|
/* XXX - We should probably have some sort of netmask_to_str() routine in to_str.c that does this. */
|
|
|
|
if(found_mask) {
|
|
ti = proto_tree_add_ipv4_format_value( tree, hf_isis_lsp_ip_reachability_ipv4_prefix, tvb, offset, 12,
|
|
src, "%s/%d", ip_to_str((guint8*)&src), prefix_len );
|
|
} else {
|
|
ti = proto_tree_add_ipv4_format_value( tree, hf_isis_lsp_ip_reachability_ipv4_prefix, tvb, offset, 12,
|
|
src, "%s mask %s", ip_to_str((guint8*)&src), tvb_ip_to_str(tvb, offset+8));
|
|
};
|
|
|
|
ntree = proto_item_add_subtree(ti, ett_isis_lsp_clv_ip_reachability);
|
|
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_default_metric, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_default_metric_ie, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_distribution, tvb, offset, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_delay_metric, tvb, offset+1, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_delay_metric_support, tvb, offset+1, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_delay_metric_ie, tvb, offset+1, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_expense_metric, tvb, offset+2, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_expense_metric_support, tvb, offset+2, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_expense_metric_ie, tvb, offset+2, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_error_metric, tvb, offset+3, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_error_metric_support, tvb, offset+3, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ip_reachability_error_metric_ie, tvb, offset+3, 1, ENC_NA);
|
|
}
|
|
offset += 12;
|
|
length -= 12;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_ipreach_subclv ()
|
|
*
|
|
* Description: parses IP reach subTLVs
|
|
* Called by various IP Reachability dissectors.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out.
|
|
* int : offset into packet data where we are (beginning of the sub_clv value).
|
|
*
|
|
* Output:
|
|
* void
|
|
*/
|
|
static void
|
|
dissect_ipreach_subclv(tvbuff_t *tvb, proto_tree *tree, int offset, int clv_code, int clv_len)
|
|
{
|
|
|
|
switch (clv_code) {
|
|
case 1:
|
|
while (clv_len >= 4) {
|
|
proto_tree_add_item(tree, hf_isis_lsp_32_bit_administrative_tag, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
offset+=4;
|
|
clv_len-=4;
|
|
}
|
|
break;
|
|
case 2:
|
|
while (clv_len >= 8) {
|
|
proto_tree_add_item(tree, hf_isis_lsp_64_bit_administrative_tag, tvb, offset, 8, ENC_BIG_ENDIAN);
|
|
offset+=8;
|
|
clv_len-=8;
|
|
}
|
|
break;
|
|
|
|
default :
|
|
proto_tree_add_text (tree, tvb, offset, clv_len+2,
|
|
"Unknown sub-TLV: code %u, length %u",
|
|
clv_code, clv_len );
|
|
break;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Name: dissect_lsp_ext_ip_reachability_clv()
|
|
*
|
|
* Description: Decode an Extended IP Reachability CLV - code 135.
|
|
*
|
|
* The extended IP reachability TLV is an extended version
|
|
* of the IP reachability TLVs (codes 128 and 130). It encodes
|
|
* the metric as a 32-bit unsigned interger and allows to add
|
|
* sub-CLV(s).
|
|
*
|
|
* CALLED BY TLV 235 DISSECTOR
|
|
*
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_lsp_ext_ip_reachability_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree,
|
|
int offset, int id_length _U_, int length)
|
|
{
|
|
proto_item *pi = NULL;
|
|
proto_tree *subtree = NULL;
|
|
proto_tree *subtree2 = NULL;
|
|
guint8 ctrl_info;
|
|
guint bit_length;
|
|
int byte_length;
|
|
guint8 prefix [4];
|
|
guint len,i;
|
|
guint subclvs_len;
|
|
guint clv_code, clv_len;
|
|
|
|
if (!tree) return;
|
|
|
|
while (length > 0) {
|
|
ctrl_info = tvb_get_guint8(tvb, offset+4);
|
|
bit_length = ctrl_info & 0x3f;
|
|
byte_length = ipv4_addr_and_mask(tvb, offset+5, prefix, bit_length);
|
|
if (byte_length == -1) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"IPv4 prefix has an invalid length: %d bits", bit_length );
|
|
return;
|
|
}
|
|
subclvs_len = 0;
|
|
if ((ctrl_info & 0x40) != 0)
|
|
subclvs_len = 1+tvb_get_guint8(tvb, offset+5+byte_length);
|
|
|
|
/* open up a new tree per prefix */
|
|
pi = proto_tree_add_text (tree, tvb, offset, 5+byte_length+subclvs_len, "Ext. IP Reachability");
|
|
subtree = proto_item_add_subtree (pi, ett_isis_lsp_part_of_clv_ext_ip_reachability);
|
|
|
|
proto_tree_add_ipv4_format_value(subtree, hf_isis_lsp_ext_ip_reachability_ipv4_prefix, tvb, offset+5, byte_length,
|
|
tvb_get_ntohl(tvb, offset+5), "%s/%u", ip_to_str (prefix), bit_length);
|
|
proto_tree_add_item(subtree, hf_isis_lsp_ext_ip_reachability_metric, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(subtree, hf_isis_lsp_ext_ip_reachability_distribution, tvb, offset+4, 1, ENC_NA);
|
|
|
|
len = 5 + byte_length;
|
|
if ((ctrl_info & 0x40) != 0) {
|
|
subclvs_len = tvb_get_guint8(tvb, offset+len);
|
|
pi = proto_tree_add_text (subtree, tvb, offset+len, 1, "sub-TLVs present, total length: %u bytes",
|
|
subclvs_len);
|
|
proto_item_set_len (pi, subclvs_len+1);
|
|
/* open up a new tree for the subTLVs */
|
|
subtree2 = proto_item_add_subtree (pi, ett_isis_lsp_clv_ip_reach_subclv);
|
|
|
|
i =0;
|
|
while (i < subclvs_len) {
|
|
clv_code = tvb_get_guint8(tvb, offset+len+1); /* skip the total subtlv len indicator */
|
|
clv_len = tvb_get_guint8(tvb, offset+len+2);
|
|
|
|
/*
|
|
* we pass on now the raw data to the ipreach_subtlv dissector
|
|
* therefore we need to skip 3 bytes
|
|
* (total subtlv len, subtlv type, subtlv len)
|
|
*/
|
|
dissect_ipreach_subclv(tvb, subtree2, offset+len+3, clv_code, clv_len);
|
|
i += clv_len + 2;
|
|
}
|
|
len += 1 + subclvs_len;
|
|
} else {
|
|
proto_tree_add_text (subtree, tvb, offset+4, 1, "no sub-TLVs present");
|
|
proto_item_set_len (pi, len);
|
|
}
|
|
|
|
offset += len;
|
|
length -= len;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_isis_grp_address_clv()
|
|
*
|
|
* Description: Decode GROUP ADDRESS subTLVs
|
|
* The Group Address TLV is composed of 1 octet for the type,
|
|
* 1 octet that specifies the number of bytes in the value field, and a
|
|
* Variable length value field that can have any or all of the subTLVs that are listed in the
|
|
* - below section
|
|
*
|
|
*Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
|
|
static void
|
|
dissect_isis_grp_address_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset,
|
|
int tree_id,int length)
|
|
{
|
|
gint len;
|
|
gint source_num;
|
|
gint k=1;
|
|
guint16 mt_block;
|
|
guint64 hmac_src;
|
|
guint16 swid = 0;
|
|
guint16 sswid = 0;
|
|
guint16 lid = 0;
|
|
|
|
proto_item *ti=NULL;
|
|
proto_tree *rt_tree=NULL;
|
|
|
|
while (length>0) {
|
|
/* fetch two bytes */
|
|
mt_block=tvb_get_ntohs(tvb, offset);
|
|
/* Mask out the lower 8 bits */
|
|
switch((mt_block&0xff00)>>8) {
|
|
|
|
|
|
case GRP_MAC_ADDRESS:
|
|
ti = proto_tree_add_text (tree, tvb, offset, (mt_block&0x00ff)+2, "GROUP MAC ADDRESS SUB TLV");
|
|
rt_tree = proto_item_add_subtree(ti,ett_isis_lsp_clv_grp_address_IPv4_prefx);
|
|
|
|
length--;
|
|
offset++;
|
|
|
|
len=tvb_get_guint8(tvb, offset);/* 1 byte fetched displays the length*/
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_grp_address_length, tvb, offset, 1, ENC_NA);
|
|
|
|
if(len < 5) {
|
|
length -= len;
|
|
offset += len;
|
|
break;
|
|
}
|
|
|
|
length--;
|
|
offset++;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_grp_address_topology_id, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
length -= 2;
|
|
offset += 2;
|
|
len -= 2;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_grp_address_vlan_id, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
length -= 2;
|
|
offset += 2;
|
|
len -= 2;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_grp_address_number_of_records, tvb, offset, 1, ENC_NA);
|
|
|
|
length--;
|
|
offset++;
|
|
len--;
|
|
|
|
while(len > 0) {
|
|
|
|
source_num=tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_grp_address_number_of_sources, tvb, offset, 1, ENC_NA);
|
|
|
|
length--;
|
|
offset++;
|
|
len--;
|
|
|
|
hmac_src=tvb_get_ntoh48(tvb, offset);/* Fetch the data in the next two bytes for display*/
|
|
|
|
fp_get_hmac_addr (hmac_src, &swid, &sswid, &lid);
|
|
proto_tree_add_bytes_format_value(rt_tree, hf_isis_lsp_grp_address_group_address, tvb, offset, 6,
|
|
tvb_get_ptr(tvb, offset, 6), "%04x.%04x.%04x", swid, sswid, lid );
|
|
|
|
length -= 6;
|
|
offset += 6;
|
|
len -= 6;
|
|
|
|
while((len > 0) && (source_num > 0)) {
|
|
hmac_src = tvb_get_ntoh48 (tvb, offset);
|
|
fp_get_hmac_addr (hmac_src, &swid, &sswid, &lid);
|
|
proto_tree_add_bytes_format(rt_tree, hf_isis_lsp_grp_address_source_address, tvb, offset, 6,
|
|
tvb_get_ptr(tvb, offset, 6), "Source Address (%d):%04x.%04x.%04x",
|
|
k, swid, sswid, lid);
|
|
|
|
k++;
|
|
length -= 6;
|
|
offset += 6;
|
|
len -= 6;
|
|
source_num--;
|
|
}
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
default:
|
|
proto_tree_add_uint_format ( tree, tree_id, tvb, offset,(mt_block&0x00ff)+2,
|
|
mt_block, "INVALID SUB TLV");
|
|
offset++;
|
|
length -= (2+tvb_get_guint8(tvb, offset));
|
|
offset += (1+tvb_get_guint8(tvb, offset));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_isis_rt_capable_clv()
|
|
*
|
|
* Description: Decode RouterCapability subTLVs
|
|
*
|
|
* The Router Capability TLV is composed of 1 octet for the type,
|
|
* 1 octet that specifies the number of bytes in the value field, and a
|
|
* variable length value field that can have any or all of the subTLVs
|
|
* that are listed in the below section
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
* len : local variable described to handle the length of the subTLV
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
|
|
/* As per RFC 6326 section 2.3 */
|
|
static void
|
|
dissect_isis_rt_capable_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
|
|
proto_tree *tree, int offset, int id_length _U_, int length)
|
|
{
|
|
gint len;
|
|
guint16 rt_block;
|
|
proto_item *ti;
|
|
proto_tree *rt_tree;
|
|
|
|
gint root_id = 1; /* To display the root id */
|
|
gint sec_vlan_id = 1; /* To display the seconadary VLAN id */
|
|
length = length - 5; /* Ignoring the 5 reserved bytes */
|
|
offset = offset + 5;
|
|
|
|
while (length>1) {
|
|
/* fetch two bytes */
|
|
rt_block = tvb_get_ntohs(tvb, offset);
|
|
|
|
/* Mask out the lower 8 bits */
|
|
switch ((rt_block&0xff00)>>8) {
|
|
|
|
case TRILL_VERSION:
|
|
ti = proto_tree_add_text(tree, tvb, offset, (rt_block&0x00ff)+2, "TRILL version sub tlv");
|
|
rt_tree = proto_item_add_subtree(ti, ett_isis_lsp_clv_rt_capable_IPv4_prefx);
|
|
|
|
length--;
|
|
offset++;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_trill_length, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_trill_maximum_version, tvb, offset+1, 1, ENC_NA);
|
|
|
|
length -= 2;
|
|
offset += 2;
|
|
|
|
break;
|
|
|
|
case TREES:
|
|
ti = proto_tree_add_text(tree, tvb, offset, (rt_block&0x00ff)+2, "Trees sub tlv");
|
|
rt_tree = proto_item_add_subtree(ti, ett_isis_lsp_clv_rt_capable_IPv4_prefx);
|
|
|
|
length--;
|
|
offset++;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_trees_length, tvb, offset, 1, ENC_NA);
|
|
|
|
length--;
|
|
offset++;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_trees_nof_trees_to_compute, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
length -= 2;
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_trees_maximum_nof_trees_to_compute, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
length -= 2;
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_trees_nof_trees_to_use, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
length -= 2;
|
|
offset += 2;
|
|
break;
|
|
|
|
case TREE_IDENTIFIER:
|
|
ti=proto_tree_add_text(tree, tvb, offset, (rt_block&0x00ff)+2, "Tree root identifier sub tlv");
|
|
rt_tree = proto_item_add_subtree(ti, ett_isis_lsp_clv_rt_capable_IPv4_prefx);
|
|
|
|
length--;
|
|
offset++;
|
|
|
|
len = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_tree_root_id_length, tvb, offset, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_tree_root_id_starting_tree_no, tvb, offset+1, 2, ENC_BIG_ENDIAN);
|
|
|
|
len -= 2;
|
|
length -= 2;
|
|
offset += 2;
|
|
|
|
while (len>1) {
|
|
rt_block = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_uint_format(rt_tree, hf_isis_lsp_rt_capable_tree_root_id_nickname, tvb, offset, 2,
|
|
rt_block, "Nickname(%dth root): %d", root_id, rt_block);
|
|
root_id++;
|
|
len -= 2;
|
|
length -= 2;
|
|
offset += 2;
|
|
}
|
|
break;
|
|
|
|
case NICKNAME:
|
|
ti=proto_tree_add_text(tree, tvb, offset, (rt_block&0x00ff)+2, "The nickname sub tlv");
|
|
rt_tree = proto_item_add_subtree(ti, ett_isis_lsp_clv_rt_capable_IPv4_prefx);
|
|
|
|
length--;
|
|
offset++;
|
|
len = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_nickname_length, tvb, offset, 1, ENC_NA);
|
|
length--;
|
|
offset++;
|
|
|
|
while (len>0) {
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_nickname_nickname_priority, tvb, offset, 1, ENC_NA);
|
|
length--;
|
|
offset++;
|
|
len--;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_nickname_tree_root_priority, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
len -= 2;
|
|
length -= 2;
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_nickname_nickname, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
length = length-2;
|
|
offset = offset+2;
|
|
len = len-2;
|
|
}
|
|
break;
|
|
|
|
case INTERESTED_VLANS:
|
|
ti = proto_tree_add_text(tree, tvb, offset, (rt_block&0x00ff)+2, "Interested VLAN and spanning tree root sub tlv");
|
|
rt_tree = proto_item_add_subtree(ti, ett_isis_lsp_clv_rt_capable_IPv4_prefx);
|
|
|
|
length--;
|
|
offset++;
|
|
|
|
len = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_interested_vlans_length, tvb, offset, 1, ENC_NA);
|
|
length--;
|
|
offset++;
|
|
len--;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_interested_vlans_nickname, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
len -= 2;
|
|
length -= 2;
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_interested_vlans_multicast_ipv4, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_interested_vlans_multicast_ipv6, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_interested_vlans_vlan_start_id, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
len -= 2;
|
|
length -= 2;
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_interested_vlans_vlan_end_id, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
len -= 2;
|
|
length -= 2;
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_interested_vlans_afs_lost_counter, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
length -= 4;
|
|
offset += 4;
|
|
len -= 4;
|
|
|
|
while (len>0) {
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_root_id, tvb, offset, 6, ENC_BIG_ENDIAN);
|
|
|
|
length -= 6;
|
|
offset += 6;
|
|
len -= 6;
|
|
}
|
|
break;
|
|
|
|
case TREES_USED_IDENTIFIER:
|
|
ti=proto_tree_add_text(tree, tvb, offset, (rt_block&0x00ff)+2, "Trees used identifier sub tlv");
|
|
rt_tree = proto_item_add_subtree(ti, ett_isis_lsp_clv_rt_capable_IPv4_prefx);
|
|
|
|
length--;
|
|
offset++;
|
|
|
|
len = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_tree_used_id_length, tvb, offset, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_tree_used_id_starting_tree_no, tvb, offset+1, 2, ENC_BIG_ENDIAN);
|
|
len -= 2;
|
|
length += 2;
|
|
offset += 3;
|
|
root_id = 1;
|
|
|
|
while (len>0) {
|
|
rt_block = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_uint_format(rt_tree, hf_isis_lsp_rt_capable_tree_used_id_nickname, tvb, offset,2,
|
|
rt_block, "Nickname(%dth root): %d", root_id, rt_block);
|
|
root_id++;
|
|
|
|
len -= 2;
|
|
offset += 2;
|
|
length -= 2;
|
|
}
|
|
break;
|
|
|
|
case VLAN_GROUP:
|
|
ti = proto_tree_add_text(tree, tvb, offset, (rt_block&0x00ff)+2, "The VLAN group sub tlv");
|
|
rt_tree = proto_item_add_subtree(ti, ett_isis_lsp_clv_rt_capable_IPv4_prefx);
|
|
|
|
length--;
|
|
offset++;
|
|
|
|
len = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_vlan_group_length, tvb, offset, 1, ENC_NA);
|
|
|
|
len--;
|
|
length--;
|
|
offset++;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_vlan_group_primary_vlan_id, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
len -= 2;
|
|
offset += 2;
|
|
length -= 2;
|
|
|
|
proto_tree_add_item(rt_tree, hf_isis_lsp_rt_capable_vlan_group_secondary_vlan_id, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
len -= 2;
|
|
offset += 2;
|
|
length -= 2;
|
|
sec_vlan_id = 1;
|
|
|
|
while (len>0) {
|
|
rt_block = tvb_get_ntohs(tvb, offset);
|
|
|
|
proto_tree_add_uint_format(rt_tree, hf_isis_lsp_rt_capable_vlan_group_nth_secondary_vlan_id, tvb, offset, 2,
|
|
rt_block, "%dth secondary vlan id: %x", sec_vlan_id, rt_block);
|
|
|
|
length -= 2;
|
|
offset += 2;
|
|
sec_vlan_id++;
|
|
len -= 2;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_text(tree, tvb, offset, (rt_block&0x00ff)+2, "INVALID sub tlv");
|
|
|
|
offset++;
|
|
length -= (2+tvb_get_guint8(tvb, offset));
|
|
offset += (1+tvb_get_guint8(tvb, offset));
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
/*
|
|
* Name: dissect_lsp_ipv6_reachability_clv()
|
|
*
|
|
* Description: Decode an IPv6 reachability CLV - code 236.
|
|
*
|
|
* CALLED BY TLV 237 DISSECTOR
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_lsp_ipv6_reachability_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
proto_item *pi;
|
|
proto_tree *subtree = NULL;
|
|
proto_tree *subtree2 = NULL;
|
|
guint8 ctrl_info;
|
|
guint bit_length;
|
|
int byte_length;
|
|
struct e_in6_addr prefix;
|
|
guint len,i;
|
|
guint subclvs_len;
|
|
guint clv_code, clv_len;
|
|
|
|
if (!tree) return;
|
|
|
|
while (length > 0) {
|
|
ctrl_info = tvb_get_guint8(tvb, offset+4);
|
|
bit_length = tvb_get_guint8(tvb, offset+5);
|
|
byte_length = ipv6_addr_and_mask(tvb, offset+6, &prefix, bit_length);
|
|
if (byte_length == -1) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"IPv6 prefix has an invalid length: %d bits", bit_length );
|
|
return;
|
|
}
|
|
subclvs_len = 0;
|
|
if ((ctrl_info & 0x20) != 0)
|
|
subclvs_len = 1+tvb_get_guint8(tvb, offset+6+byte_length);
|
|
|
|
pi = proto_tree_add_text (tree, tvb, offset, 6+byte_length+subclvs_len, "IPv6 Reachability");
|
|
subtree = proto_item_add_subtree (pi, ett_isis_lsp_part_of_clv_ipv6_reachability);
|
|
|
|
proto_tree_add_ipv6_format_value(subtree, hf_isis_lsp_ipv6_reachability_ipv6_prefix, tvb, offset+6, byte_length,
|
|
(guint8*)&prefix, "IPv6 prefix: %s/%u", ip6_to_str (&prefix), bit_length);
|
|
|
|
proto_tree_add_item(subtree, hf_isis_lsp_ipv6_reachability_metric, tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(subtree, hf_isis_lsp_ipv6_reachability_distribution, tvb, offset+4, 1, ENC_NA);
|
|
proto_tree_add_item(subtree, hf_isis_lsp_ipv6_reachability_distribution_internal, tvb, offset+4, 1, ENC_NA);
|
|
|
|
if ((ctrl_info & 0x1f) != 0) {
|
|
proto_tree_add_item(subtree, hf_isis_lsp_ipv6_reachability_reserved_bits, tvb, offset+4, 1, ENC_NA);
|
|
}
|
|
|
|
len = 6 + byte_length;
|
|
if ((ctrl_info & 0x20) != 0) {
|
|
subclvs_len = tvb_get_guint8(tvb, offset+len);
|
|
pi = proto_tree_add_text (subtree, tvb, offset+len, 1, "sub-TLVs present, total length: %u bytes",
|
|
subclvs_len);
|
|
proto_item_set_len (pi, subclvs_len+1);
|
|
/* open up a new tree for the subTLVs */
|
|
subtree2 = proto_item_add_subtree (pi, ett_isis_lsp_clv_ip_reach_subclv);
|
|
|
|
i =0;
|
|
while (i < subclvs_len) {
|
|
clv_code = tvb_get_guint8(tvb, offset+len+1); /* skip the total subtlv len indicator */
|
|
clv_len = tvb_get_guint8(tvb, offset+len+2);
|
|
dissect_ipreach_subclv(tvb, subtree2, offset+len+3, clv_code, clv_len);
|
|
i += clv_len + 2;
|
|
}
|
|
len += 1 + subclvs_len;
|
|
} else {
|
|
proto_tree_add_text (subtree, tvb, offset+4, 1, "no sub-TLVs present");
|
|
proto_item_set_len (pi, len);
|
|
}
|
|
offset += len;
|
|
length -= len;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_nlpid_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a lsp packets NLPID clv. Calls into the
|
|
* clv common one.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_lsp_nlpid_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
isis_dissect_nlpid_clv(tvb, tree, offset, length);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_mt_clv()
|
|
*
|
|
* Description: - code 229
|
|
* Decode for a lsp packets Multi Topology clv. Calls into the
|
|
* clv common one.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* guint : length of this clv
|
|
* int : length of IDs in packet.
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_lsp_mt_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
isis_dissect_mt_clv(tvb, tree, offset, length, hf_isis_lsp_clv_mt );
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_hostname_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a lsp packets hostname clv. Calls into the
|
|
* clv common one.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_lsp_hostname_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
isis_dissect_hostname_clv(tvb, tree, offset, length,
|
|
hf_isis_lsp_hostname);
|
|
}
|
|
|
|
|
|
/*
|
|
* Name: dissect_lsp_te_router_id_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a lsp packets Traffic Engineering ID clv. Calls into the
|
|
* clv common one.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_lsp_te_router_id_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
isis_dissect_te_router_id_clv(tree, pinfo, tvb, &ei_isis_lsp_short_packet, offset, length,
|
|
hf_isis_lsp_clv_te_router_id );
|
|
}
|
|
|
|
|
|
/*
|
|
* Name: dissect_lsp_ip_int_addr_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a lsp packets ip interface addr clv. Calls into the
|
|
* clv common one.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_lsp_ip_int_addr_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
isis_dissect_ip_int_clv(tree, pinfo, tvb, &ei_isis_lsp_short_packet, offset, length,
|
|
hf_isis_lsp_clv_ipv4_int_addr );
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_ipv6_int_addr_clv()
|
|
*
|
|
* Description: Decode an IPv6 interface addr CLV - code 232.
|
|
*
|
|
* Calls into the clv common one.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_lsp_ipv6_int_addr_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
isis_dissect_ipv6_int_clv(tree, pinfo, tvb, &ei_isis_lsp_short_packet, offset, length,
|
|
hf_isis_lsp_clv_ipv6_int_addr );
|
|
}
|
|
|
|
static void
|
|
dissect_isis_lsp_clv_mt_cap_spb_instance(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *tree, int offset, int subtype, int sublen)
|
|
{
|
|
const int CIST_ROOT_ID_LEN = 8; /* CIST Root Identifier */
|
|
const int CIST_EXT_ROOT_PATH_COST_LEN = 4; /* CIST External Root Path Cost */
|
|
const int BRIDGE_PRI_LEN = 2; /* Bridge Priority */
|
|
const int V_SPSOURCEID_LEN = 4; /* v | SPSourceID */
|
|
const int NUM_TREES_LEN = 1; /* num of trees */
|
|
|
|
const int CIST_ROOT_ID_OFFSET = 0;
|
|
const int CIST_EXT_ROOT_PATH_COST_OFFSET = CIST_ROOT_ID_OFFSET + CIST_ROOT_ID_LEN;
|
|
const int BRIDGE_PRI_OFFSET = CIST_EXT_ROOT_PATH_COST_OFFSET + CIST_EXT_ROOT_PATH_COST_LEN;
|
|
const int V_SPSOURCEID_OFFSET = BRIDGE_PRI_OFFSET + BRIDGE_PRI_LEN;
|
|
const int NUM_TREES_OFFSET = V_SPSOURCEID_OFFSET + V_SPSOURCEID_LEN;
|
|
const int FIXED_LEN = NUM_TREES_OFFSET + NUM_TREES_LEN;
|
|
const int VLAN_ID_TUPLE_LEN = 8;
|
|
|
|
if (sublen < FIXED_LEN) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"Short SPB Digest subTLV (%d vs %d)", sublen, FIXED_LEN);
|
|
return;
|
|
}
|
|
else {
|
|
proto_tree *subtree, *ti;
|
|
int subofs = offset;
|
|
const guint8 *cist_root_identifier = tvb_get_ptr (tvb, subofs + CIST_ROOT_ID_OFFSET, CIST_ROOT_ID_LEN);
|
|
guint8 num_trees = tvb_get_guint8(tvb, subofs + NUM_TREES_OFFSET);
|
|
|
|
/*************************/
|
|
ti = proto_tree_add_text( tree, tvb, offset-2, sublen+2,
|
|
"SPB Instance: Type: 0x%02x, Length: %d", subtype, sublen);
|
|
subtree = proto_item_add_subtree(ti, ett_isis_lsp_clv_mt_cap_spb_instance);
|
|
|
|
/*************************/
|
|
proto_tree_add_bytes_format_value( subtree, hf_isis_lsp_mt_cap_spb_instance_cist_root_identifier, tvb, subofs + CIST_ROOT_ID_OFFSET, CIST_ROOT_ID_LEN,
|
|
cist_root_identifier, "%08x-%08x-%08x-%08x-%08x-%08x-%08x-%08x",
|
|
cist_root_identifier[0], cist_root_identifier[1], cist_root_identifier[2],
|
|
cist_root_identifier[3], cist_root_identifier[4], cist_root_identifier[5],
|
|
cist_root_identifier[6], cist_root_identifier[7]);
|
|
proto_tree_add_item(subtree, hf_isis_lsp_mt_cap_spb_instance_cist_external_root_path_cost, tvb, subofs + CIST_EXT_ROOT_PATH_COST_OFFSET, CIST_EXT_ROOT_PATH_COST_LEN, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(subtree, hf_isis_lsp_mt_cap_spb_instance_bridge_priority, tvb, subofs + BRIDGE_PRI_OFFSET, BRIDGE_PRI_LEN, ENC_BIG_ENDIAN);
|
|
|
|
proto_tree_add_item(subtree, hf_isis_lsp_mt_cap_spb_instance_v, tvb, subofs + V_SPSOURCEID_OFFSET, V_SPSOURCEID_LEN, ENC_BIG_ENDIAN);
|
|
|
|
proto_tree_add_item(subtree, hf_isis_lsp_mt_cap_spsourceid, tvb, subofs + V_SPSOURCEID_OFFSET, V_SPSOURCEID_LEN, ENC_BIG_ENDIAN);
|
|
ti = proto_tree_add_item(subtree, hf_isis_lsp_mt_cap_spb_instance_number_of_trees, tvb, subofs + NUM_TREES_OFFSET, NUM_TREES_LEN, ENC_BIG_ENDIAN);
|
|
if (num_trees == 0)
|
|
proto_item_append_text(ti, " Invalid subTLV: zero trees");
|
|
|
|
subofs += FIXED_LEN;
|
|
sublen -= FIXED_LEN;
|
|
|
|
/*************************/
|
|
if (sublen != (num_trees * VLAN_ID_TUPLE_LEN)) {
|
|
proto_tree_add_text( subtree, tvb, subofs, 0,
|
|
"SubTLV length doesn't match number of trees");
|
|
return;
|
|
}
|
|
while (sublen > 0 && num_trees > 0) {
|
|
if (sublen < VLAN_ID_TUPLE_LEN) {
|
|
proto_tree_add_expert_format(subtree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"Short VLAN_ID entry (%d vs %d)", sublen, VLAN_ID_TUPLE_LEN);
|
|
return;
|
|
}
|
|
else {
|
|
const guint8 flags = tvb_get_guint8(tvb, subofs);
|
|
const guint8 *ect_id = tvb_get_ptr(tvb, subofs + 1, 4);
|
|
const guint8 *bvid_spvid = tvb_get_ptr(tvb, subofs + 1 + 4, 3);
|
|
const guint16 bvid = (0xff0 & (((guint16)bvid_spvid[0]) << 4)) | (0x0f & (bvid_spvid[1] >> 4));
|
|
const guint16 spvid = (0xf00 & (((guint16)bvid_spvid[1]) << 8)) | (0xff & (bvid_spvid[2]));
|
|
proto_tree_add_text( subtree, tvb, subofs, VLAN_ID_TUPLE_LEN,
|
|
" U: %u, M: %u, A: %u, ECT: %02x-%02x-%02x-%02x, BVID: 0x%03x (%d),%s SPVID: 0x%03x (%d)",
|
|
(flags >> 7) & 1,
|
|
(flags >> 6) & 1,
|
|
(flags >> 5) & 1,
|
|
ect_id[0], ect_id[1], ect_id[2], ect_id[3],
|
|
bvid, bvid,
|
|
( bvid < 10 ? " "
|
|
: bvid < 100 ? " "
|
|
: bvid < 1000 ? " "
|
|
: ""),
|
|
spvid, spvid);
|
|
subofs += VLAN_ID_TUPLE_LEN;
|
|
sublen -= VLAN_ID_TUPLE_LEN;
|
|
--num_trees;
|
|
}
|
|
}
|
|
if (num_trees) {
|
|
proto_tree_add_expert_format(subtree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"Short subTLV (%d vs %d)", sublen, num_trees * VLAN_ID_TUPLE_LEN);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
static void
|
|
dissect_isis_lsp_clv_mt_cap_spb_oalg(tvbuff_t *tvb,
|
|
proto_tree *tree, int offset, int subtype, int sublen)
|
|
{
|
|
proto_tree_add_text( tree, tvb, offset, -1,
|
|
"MT-Cap SPB Opaque Algorithm: Type: 0x%02x, Length: %d", subtype, sublen);
|
|
}
|
|
static void
|
|
dissect_isis_lsp_clv_mt_cap_spbm_service_identifier(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *tree, int offset, int subtype, int sublen)
|
|
{
|
|
const int BMAC_LEN = 6; /* B-MAC Address */
|
|
const int BVID_LEN = 2; /* Base-VID */
|
|
|
|
const int BMAC_OFFSET = 0;
|
|
const int BVID_OFFSET = BMAC_OFFSET + BMAC_LEN;
|
|
const int FIXED_LEN = BVID_OFFSET + BVID_LEN;
|
|
|
|
const int ISID_LEN = 4;
|
|
|
|
if (sublen < FIXED_LEN) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"Short SPBM Service Identifier and Unicast Address subTLV (%d vs %d)", sublen, FIXED_LEN);
|
|
return;
|
|
}
|
|
else {
|
|
proto_tree *subtree, *ti;
|
|
int subofs = offset;
|
|
|
|
/*************************/
|
|
ti = proto_tree_add_text( tree, tvb, offset-2, sublen+2,
|
|
"SPB Service ID and Unicast Address: Type: 0x%02x, Length: %d", subtype, sublen);
|
|
subtree = proto_item_add_subtree(ti, ett_isis_lsp_clv_mt_cap_spbm_service_identifier);
|
|
|
|
/*************************/
|
|
proto_tree_add_item(subtree, hf_isis_lsp_mt_cap_spbm_service_identifier_b_mac, tvb, subofs + BMAC_OFFSET, BMAC_LEN, ENC_NA);
|
|
proto_tree_add_item(subtree, hf_isis_lsp_mt_cap_spbm_service_identifier_base_vid, tvb, subofs + BVID_OFFSET, BVID_LEN, ENC_BIG_ENDIAN);
|
|
|
|
subofs += FIXED_LEN;
|
|
sublen -= FIXED_LEN;
|
|
|
|
/*************************/
|
|
while (sublen > 0) {
|
|
if (sublen < ISID_LEN) {
|
|
proto_tree_add_expert_format(subtree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"Short ISID entry (%d vs %d)", sublen, ISID_LEN);
|
|
return;
|
|
}
|
|
else {
|
|
const guint32 isid = tvb_get_ntohl(tvb, subofs);
|
|
proto_tree_add_text( subtree, tvb, subofs, ISID_LEN,
|
|
" T: %u, R: %u, ISID: 0x%06x (%d)",
|
|
(isid >> 31) & 1,
|
|
(isid >> 30) & 1,
|
|
isid & 0x00ffffff,
|
|
isid & 0x00ffffff);
|
|
subofs += ISID_LEN;
|
|
sublen -= ISID_LEN;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
static void
|
|
dissect_isis_lsp_clv_mt_cap_spbv_mac_address(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *tree, int offset, int subtype, int sublen)
|
|
{
|
|
guint16 fixed_data;
|
|
guint16 spvid;
|
|
guint8 sr_bit;
|
|
const int GMAC_LEN = 6; /* GMAC Address */
|
|
const int SPVID_LEN = 2; /* SPVID */
|
|
const int MAC_TUPLE_LEN = 7;
|
|
|
|
const int SPVID_OFFSET = 0;
|
|
const int FIXED_LEN = SPVID_OFFSET + SPVID_LEN;
|
|
|
|
if (sublen < FIXED_LEN) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"Short SPBV Mac Address subTLV (%d vs %d)", sublen, FIXED_LEN);
|
|
return;
|
|
}
|
|
else {
|
|
proto_tree *subtree, *ti;
|
|
int subofs = offset;
|
|
fixed_data = tvb_get_ntohs(tvb, subofs);
|
|
spvid = (fixed_data & 0x0FFF);
|
|
sr_bit = (fixed_data & 0x3000) >> 12;
|
|
|
|
/*************************/
|
|
ti = proto_tree_add_text( tree, tvb, offset-2, sublen+2,
|
|
"SPBV Mac Address: Type: 0x%02x, Length: %d", subtype, sublen);
|
|
subtree = proto_item_add_subtree(ti, ett_isis_lsp_clv_mt_cap_spbv_mac_address);
|
|
|
|
/*************************/
|
|
proto_tree_add_uint(subtree, hf_isis_lsp_spb_sr_bit,
|
|
tvb, subofs, 1, sr_bit);
|
|
proto_tree_add_uint(subtree, hf_isis_lsp_spb_spvid,
|
|
tvb, subofs, 2, spvid);
|
|
|
|
subofs += FIXED_LEN;
|
|
sublen -= FIXED_LEN;
|
|
|
|
/*************************/
|
|
while (sublen > 0) {
|
|
if (sublen < MAC_TUPLE_LEN) {
|
|
proto_tree_add_expert_format(subtree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"Short MAC Address entry (%d vs %d)", sublen, MAC_TUPLE_LEN);
|
|
return;
|
|
}
|
|
else {
|
|
const guint32 tr_bit = tvb_get_guint8(tvb, subofs);
|
|
const guint8 *gmac = tvb_get_ptr(tvb, subofs + 1, GMAC_LEN);
|
|
proto_tree_add_text( subtree, tvb, subofs, MAC_TUPLE_LEN,
|
|
" T: %u, R: %u, MAC: %02x-%02x-%02x-%02x-%02x-%02x",
|
|
(tr_bit >> 7) & 1,
|
|
(tr_bit >> 6) & 1,
|
|
gmac[0],
|
|
gmac[1],
|
|
gmac[2],
|
|
gmac[3],
|
|
gmac[4],
|
|
gmac[5]);
|
|
subofs += MAC_TUPLE_LEN;
|
|
sublen -= MAC_TUPLE_LEN;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* Name: dissect_lsp_clv_mt_cap()
|
|
*
|
|
* Description: Decode an ISIS MT-CAP CLV - code 144.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_isis_lsp_clv_mt_cap(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
if (length >= 2) {
|
|
/* mtid */
|
|
proto_tree_add_item( tree, hf_isis_lsp_mt_cap_mtid, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_isis_lsp_mt_cap_overload, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
length -= 2;
|
|
offset += 2;
|
|
while (length >= 2) {
|
|
guint8 subtype = tvb_get_guint8(tvb, offset);
|
|
guint8 subtlvlen = tvb_get_guint8(tvb, offset+1);
|
|
length -= 2;
|
|
offset += 2;
|
|
if (subtlvlen > length) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"Short type 0x%02x TLV (%d vs %d)", subtype, subtlvlen, length);
|
|
return;
|
|
}
|
|
if (subtype == 0x01) { /* SPB Instance */
|
|
dissect_isis_lsp_clv_mt_cap_spb_instance(tvb, pinfo, tree, offset, subtype, subtlvlen);
|
|
}
|
|
else if (subtype == 0x02) { /* OALG */
|
|
dissect_isis_lsp_clv_mt_cap_spb_oalg(tvb, tree, offset, subtype, subtlvlen);
|
|
}
|
|
else if (subtype == 0x03) { /* SPBM Service Identifier */
|
|
dissect_isis_lsp_clv_mt_cap_spbm_service_identifier(tvb, pinfo, tree, offset, subtype, subtlvlen);
|
|
}
|
|
else if (subtype == 0x04) { /* SPBV Mac Address */
|
|
dissect_isis_lsp_clv_mt_cap_spbv_mac_address(tvb, pinfo, tree, offset, subtype, subtlvlen);
|
|
}
|
|
else {
|
|
proto_tree_add_expert_format( tree, pinfo, &ei_isis_lsp_subtlv, tvb, offset, -1,
|
|
"Unknown SubTlv: Type: 0x%02x, Length: %d", subtype, subtlvlen);
|
|
}
|
|
length -= subtlvlen;
|
|
offset += subtlvlen;
|
|
}
|
|
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_authentication_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a lsp packets authenticaion clv. Calls into the
|
|
* clv common one.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_lsp_authentication_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
isis_dissect_authentication_clv(tree, pinfo, tvb, &ei_isis_lsp_authentication, offset, length);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_ip_authentication_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a lsp packets authenticaion clv. Calls into the
|
|
* clv common one.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : proto tree to build on (may be null)
|
|
* int : current offset into packet data
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
static void
|
|
dissect_lsp_ip_authentication_clv(tvbuff_t *tvb, packet_info* pinfo _U_, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
isis_dissect_ip_authentication_clv(tvb, tree, offset, length);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_area_address_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a lsp packet's area address clv. Call into clv common
|
|
* one.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* int : length of IDs in packet.
|
|
* int : length of clv we are decoding
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_lsp_area_address_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
isis_dissect_area_address_clv(tree, pinfo, tvb, &ei_isis_lsp_short_packet, offset, length);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_eis_neighbors_clv_inner()
|
|
*
|
|
* Description:
|
|
* Real work horse for showing neighbors. This means we decode the
|
|
* first octet as either virtual/!virtual (if show_virtual param is
|
|
* set), or as a must == 0 reserved value.
|
|
*
|
|
* Once past that, we decode n neighbor elements. Each neighbor
|
|
* is comprised of a metric block (is dissect_metric) and the
|
|
* addresses.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* int : length of IDs in packet.
|
|
* int : length of clv we are decoding
|
|
* int : set to decode first octet as virtual vs reserved == 0
|
|
* int : set to indicate EIS instead of IS (6 octet per addr instead of 7)
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_lsp_eis_neighbors_clv_inner(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
|
|
int offset, int length, int id_length, int show_virtual, int is_eis)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *ntree = NULL;
|
|
int tlen;
|
|
|
|
if (!is_eis) {
|
|
id_length++; /* IDs are one octet longer in IS neighbours */
|
|
if ( tree ) {
|
|
if ( show_virtual ) {
|
|
/* virtual path flag */
|
|
proto_tree_add_text ( tree, tvb, offset, 1,
|
|
tvb_get_guint8(tvb, offset) ? "IsVirtual" : "IsNotVirtual" );
|
|
} else {
|
|
proto_tree_add_item(tree, hf_isis_lsp_eis_neighbors_reserved, tvb, offset, 1, ENC_NA);
|
|
}
|
|
}
|
|
offset++;
|
|
length--;
|
|
}
|
|
tlen = 4 + id_length;
|
|
|
|
while ( length > 0 ) {
|
|
if (length<tlen) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"short E/IS reachability (%d vs %d)", length, tlen );
|
|
return;
|
|
}
|
|
/*
|
|
* Gotta build a sub-tree for all our pieces
|
|
*/
|
|
if ( tree ) {
|
|
if ( is_eis ) {
|
|
ti = proto_tree_add_text(tree, tvb, offset, tlen, "ES Neighbor");
|
|
} else {
|
|
ti = proto_tree_add_text(tree, tvb, offset, tlen, "IS Neighbor");
|
|
}
|
|
ntree = proto_item_add_subtree(ti, ett_isis_lsp_clv_is_neighbors);
|
|
|
|
proto_tree_add_item(ntree, hf_isis_lsp_eis_neighbors_default_metric, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_eis_neighbors_default_metric_ie, tvb, offset, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(ntree, hf_isis_lsp_eis_neighbors_delay_metric, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_eis_neighbors_delay_metric_supported, tvb, offset, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(ntree, hf_isis_lsp_eis_neighbors_delay_metric_ie, tvb, offset+1, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(ntree, hf_isis_lsp_eis_neighbors_expense_metric, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_eis_neighbors_expense_metric_supported, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_eis_neighbors_expense_metric_ie, tvb, offset+2, 1, ENC_NA);
|
|
|
|
proto_tree_add_item(ntree, hf_isis_lsp_eis_neighbors_error_metric, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_eis_neighbors_error_metric_supported, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_eis_neighbors_error_metric_ie, tvb, offset+3, 1, ENC_NA);
|
|
proto_tree_add_item(ntree, is_eis ? hf_isis_lsp_eis_neighbors_es_neighbor : hf_isis_lsp_eis_neighbors_is_neighbor,
|
|
tvb, offset+4, id_length, ENC_NA);
|
|
}
|
|
offset += tlen;
|
|
length -= tlen;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_l1_is_neighbors_clv()
|
|
*
|
|
* Description:
|
|
* Dispatch a l1 intermediate system neighbor by calling
|
|
* the inner function with show virtual set to TRUE and is es set to FALSE.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* int : length of IDs in packet.
|
|
* int : length of clv we are decoding
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_lsp_l1_is_neighbors_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length, int length)
|
|
{
|
|
dissect_lsp_eis_neighbors_clv_inner(tvb, pinfo, tree, offset,
|
|
length, id_length, TRUE, FALSE);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_l1_es_neighbors_clv()
|
|
*
|
|
* Description:
|
|
* Dispatch a l1 end or intermediate system neighbor by calling
|
|
* the inner function with show virtual set to TRUE and es set to TRUE.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* int : length of IDs in packet.
|
|
* int : length of clv we are decoding
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_lsp_l1_es_neighbors_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length, int length)
|
|
{
|
|
dissect_lsp_eis_neighbors_clv_inner(tvb, pinfo, tree, offset,
|
|
length, id_length, TRUE, TRUE);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_l2_is_neighbors_clv()
|
|
*
|
|
* Description:
|
|
* Dispatch a l2 intermediate system neighbor by calling
|
|
* the inner function with show virtual set to FALSE, and is es set
|
|
* to FALSE
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* int : length of IDs in packet.
|
|
* int : length of clv we are decoding
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_lsp_l2_is_neighbors_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length, int length)
|
|
{
|
|
dissect_lsp_eis_neighbors_clv_inner(tvb, pinfo, tree, offset,
|
|
length, id_length, FALSE, FALSE);
|
|
}
|
|
|
|
|
|
/*
|
|
* Name: dissect_subclv_admin_group ()
|
|
*
|
|
* Description: Called by function dissect_lsp_ext_is_reachability_clv().
|
|
*
|
|
* This function is called by dissect_lsp_ext_is_reachability_clv()
|
|
* for dissect the administrive group sub-CLV (code 3).
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out.
|
|
* int : offset into packet data where we are (beginning of the sub_clv value).
|
|
*
|
|
* Output:
|
|
* void
|
|
*/
|
|
static void
|
|
dissect_subclv_admin_group (tvbuff_t *tvb, proto_tree *tree, int offset) {
|
|
proto_item *ti;
|
|
proto_tree *ntree;
|
|
guint32 clv_value;
|
|
guint32 mask;
|
|
int i;
|
|
|
|
ti = proto_tree_add_text(tree, tvb, offset-2, 6, "Administrative group(s):");
|
|
ntree = proto_item_add_subtree (ti, ett_isis_lsp_subclv_admin_group);
|
|
|
|
clv_value = tvb_get_ntohl(tvb, offset);
|
|
mask = 1;
|
|
for (i = 0 ; i < 32 ; i++) {
|
|
if ( (clv_value & mask) != 0 ) {
|
|
proto_tree_add_text (ntree, tvb, offset, 4, "group %d", i);
|
|
}
|
|
mask <<= 1;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_subclv_max_bw ()
|
|
*
|
|
* Description: Called by function dissect_lsp_ext_is_reachability_clv().
|
|
*
|
|
* This function is called by dissect_lsp_ext_is_reachability_clv()
|
|
* for dissect the maximum link bandwidth sub-CLV (code 9).
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out.
|
|
* int : offset into packet data where we are (beginning of the sub_clv value).
|
|
*
|
|
* Output:
|
|
* void
|
|
*/
|
|
static void
|
|
dissect_subclv_max_bw(tvbuff_t *tvb, proto_tree *tree, int offset)
|
|
{
|
|
gfloat bw;
|
|
|
|
bw = tvb_get_ntohieee_float(tvb, offset)*8/1000000;
|
|
proto_tree_add_float_format_value(tree, hf_isis_lsp_maximum_link_bandwidth, tvb, offset-2, 6,
|
|
bw, "%.2f Mbps", bw);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_subclv_rsv_bw ()
|
|
*
|
|
* Description: Called by function dissect_lsp_ext_is_reachability_clv().
|
|
*
|
|
* This function is called by dissect_lsp_ext_is_reachability_clv()
|
|
* for dissect the reservable link bandwidth sub-CLV (code 10).
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out.
|
|
* int : offset into packet data where we are (beginning of the sub_clv value).
|
|
*
|
|
* Output:
|
|
* void
|
|
*/
|
|
static void
|
|
dissect_subclv_rsv_bw(tvbuff_t *tvb, proto_tree *tree, int offset)
|
|
{
|
|
gfloat bw;
|
|
|
|
bw = tvb_get_ntohieee_float(tvb, offset)*8/1000000;
|
|
proto_tree_add_float_format_value (tree, hf_isis_lsp_reservable_link_bandwidth, tvb, offset-2, 6,
|
|
bw, "%.2f Mbps", bw );
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_subclv_unrsv_bw ()
|
|
*
|
|
* Description: Called by function dissect_lsp_ext_is_reachability_clv().
|
|
*
|
|
* This function is called by dissect_lsp_ext_is_reachability_clv()
|
|
* for dissect the unreserved bandwidth sub-CLV (code 11).
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out.
|
|
* int : offset into packet data where we are (beginning of the sub_clv value).
|
|
*
|
|
* Output:
|
|
* void
|
|
*/
|
|
static void
|
|
dissect_subclv_unrsv_bw(tvbuff_t *tvb, proto_tree *tree, int offset)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *ntree;
|
|
gfloat bw;
|
|
int i;
|
|
|
|
ti = proto_tree_add_text (tree, tvb, offset-2, 34, "Unreserved bandwidth:");
|
|
ntree = proto_item_add_subtree (ti, ett_isis_lsp_subclv_unrsv_bw);
|
|
|
|
for (i = 0 ; i < 8 ; i++) {
|
|
bw = tvb_get_ntohieee_float(tvb, offset+4*i)*8/1000000;
|
|
proto_tree_add_float_format(ntree, hf_isis_lsp_unrsv_bw_priority_level, tvb, offset+4*i, 4,
|
|
bw, "priority level %d: %.2f Mbps", i, bw );
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_subclv_spb_link_metric ()
|
|
*
|
|
* Description: Called by function dissect_lsp_ext_is_reachability_clv().
|
|
*
|
|
* This function is called by dissect_lsp_ext_is_reachability_clv()
|
|
* for dissect the SPB link metric sub-CLV (code 29).
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out.
|
|
* int : offset into packet data where we are (beginning of the sub_clv value).
|
|
* int : subtlv type
|
|
* int : subtlv length
|
|
*
|
|
* Output:
|
|
* void
|
|
*/
|
|
|
|
static void
|
|
dissect_subclv_spb_link_metric(tvbuff_t *tvb, packet_info *pinfo,
|
|
proto_tree *tree, int offset, int subtype, int sublen)
|
|
{
|
|
const int SUBLEN = 6;
|
|
|
|
if (sublen != SUBLEN) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"Short SPB Link Metric sub-TLV (%d vs %d)", sublen, SUBLEN);
|
|
return;
|
|
}
|
|
else {
|
|
proto_tree *subtree, *ti;
|
|
ti = proto_tree_add_text( tree, tvb, offset-2, sublen+2,
|
|
"SPB Link Metric: Type: 0x%02x (%d), Length: %d", subtype, subtype, sublen);
|
|
subtree = proto_item_add_subtree(ti, ett_isis_lsp_subclv_spb_link_metric);
|
|
|
|
proto_tree_add_item(subtree, hf_isis_lsp_spb_link_metric,
|
|
tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
|
|
proto_tree_add_item(subtree, hf_isis_lsp_spb_port_count,
|
|
tvb, offset+3, 1, ENC_BIG_ENDIAN);
|
|
|
|
proto_tree_add_item(subtree, hf_isis_lsp_spb_port_id,
|
|
tvb, offset+4, 2, ENC_BIG_ENDIAN);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_ext_is_reachability_clv()
|
|
*
|
|
* Description: Decode a Extended IS Reachability CLV - code 22
|
|
*
|
|
* The extended IS reachability TLV is an extended version
|
|
* of the IS reachability TLV (code 2). It encodes the metric
|
|
* as a 24-bit unsigned interger and allows to add sub-CLV(s).
|
|
*
|
|
* CALLED BY TLV 222 DISSECTOR
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* int : length of IDs in packet.
|
|
* int : length of clv we are decoding
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_lsp_ext_is_reachability_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree,
|
|
int offset, int id_length _U_, int length)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *ntree = NULL;
|
|
guint subclvs_len;
|
|
guint len, i;
|
|
guint clv_code, clv_len;
|
|
|
|
while (length > 0) {
|
|
ti = proto_tree_add_item(tree, hf_isis_lsp_ext_is_reachability_is_neighbor, tvb, offset, 7, ENC_NA);
|
|
proto_item_set_len(ti, -1);
|
|
ntree = proto_item_add_subtree (ti, ett_isis_lsp_part_of_clv_ext_is_reachability );
|
|
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ext_is_reachability_metric, tvb, offset+7, 3, ENC_BIG_ENDIAN);
|
|
|
|
subclvs_len = tvb_get_guint8(tvb, offset+10);
|
|
if (subclvs_len == 0) {
|
|
proto_tree_add_text (ntree, tvb, offset+10, 1, "no sub-TLVs present");
|
|
}
|
|
else {
|
|
i = 0;
|
|
while (i < subclvs_len) {
|
|
clv_code = tvb_get_guint8(tvb, offset+11+i);
|
|
clv_len = tvb_get_guint8(tvb, offset+12+i);
|
|
switch (clv_code) {
|
|
case 3 :
|
|
dissect_subclv_admin_group(tvb, ntree, offset+13+i);
|
|
break;
|
|
case 4 :
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ext_is_reachability_link_local_identifier, tvb, offset+13+i, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ext_is_reachability_link_remote_identifier, tvb, offset+17+i, 4, ENC_BIG_ENDIAN);
|
|
break;
|
|
case 6 :
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ext_is_reachability_ipv4_interface_address, tvb, offset+11+i, 6, ENC_BIG_ENDIAN);
|
|
break;
|
|
case 8 :
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ext_is_reachability_ipv4_neighbor_address, tvb, offset+11+i, 6, ENC_BIG_ENDIAN);
|
|
break;
|
|
case 9 :
|
|
dissect_subclv_max_bw (tvb, ntree, offset+13+i);
|
|
break;
|
|
case 10:
|
|
dissect_subclv_rsv_bw (tvb, ntree, offset+13+i);
|
|
break;
|
|
case 11:
|
|
dissect_subclv_unrsv_bw (tvb, ntree, offset+13+i);
|
|
break;
|
|
case 18:
|
|
proto_tree_add_item(ntree, hf_isis_lsp_ext_is_reachability_traffic_engineering_default_metric, tvb, offset+11+i, 5, ENC_BIG_ENDIAN);
|
|
break;
|
|
case 29:
|
|
dissect_subclv_spb_link_metric(tvb, pinfo, ntree,
|
|
offset+13+i, clv_code, clv_len);
|
|
break;
|
|
case 250:
|
|
case 251:
|
|
case 252:
|
|
case 253:
|
|
case 254:
|
|
proto_tree_add_text (ntree, tvb, offset+11+i, clv_len+2,
|
|
"Unknown Cisco specific extensions: code %d, length %d",
|
|
clv_code, clv_len );
|
|
break;
|
|
default :
|
|
proto_tree_add_text (ntree, tvb, offset+11+i, clv_len+2,
|
|
"Unknown sub-CLV: code %d, length %d", clv_code, clv_len );
|
|
break;
|
|
}
|
|
i += clv_len + 2;
|
|
}
|
|
}
|
|
|
|
len = 11 + subclvs_len;
|
|
proto_item_set_len (ti, len);
|
|
offset += len;
|
|
length -= len;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_mt_reachable_IPv4_prefx_clv()
|
|
*
|
|
* Description: Decode Multi-Topology IPv4 Prefixes - code 235
|
|
*
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* int : length of IDs in packet.
|
|
* int : length of clv we are decoding
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_lsp_mt_reachable_IPv4_prefx_clv(tvbuff_t *tvb, packet_info* pinfo,
|
|
proto_tree *tree, int offset, int id_length _U_, int length)
|
|
{
|
|
if (length < 2) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"short lsp multi-topology reachable IPv4 prefixes(%d vs %d)", length, 2 );
|
|
return;
|
|
}
|
|
dissect_lsp_mt_id(tvb, tree, offset);
|
|
dissect_lsp_ext_ip_reachability_clv(tvb, pinfo, tree, offset+2, 0, length-2);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_mt_reachable_IPv6_prefx_clv()
|
|
*
|
|
* Description: Decode Multi-Topology IPv6 Prefixes - code 237
|
|
*
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* int : length of IDs in packet.
|
|
* int : length of clv we are decoding
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_lsp_mt_reachable_IPv6_prefx_clv(tvbuff_t *tvb, packet_info* pinfo,
|
|
proto_tree *tree, int offset, int id_length _U_, int length)
|
|
{
|
|
if (length < 2) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"short lsp multi-topology reachable IPv6 prefixes(%d vs %d)", length, 2 );
|
|
return;
|
|
}
|
|
dissect_lsp_mt_id(tvb, tree, offset);
|
|
dissect_lsp_ipv6_reachability_clv(tvb, pinfo, tree, offset+2, 0, length-2);
|
|
}
|
|
|
|
|
|
/*
|
|
* Name: dissect_lsp_mt_is_reachability_clv()
|
|
*
|
|
* Description: Decode Multi-Topology Intermediate Systems - code 222
|
|
*
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* int : unused
|
|
* int : length of clv we are decoding
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
|
|
static void
|
|
dissect_lsp_mt_is_reachability_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
if (length < 2) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"short lsp reachability(%d vs %d)", length, 2 );
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* the MT ID value dissection is used in other LSPs so we push it
|
|
* in a function
|
|
*/
|
|
dissect_lsp_mt_id(tvb, tree, offset);
|
|
/*
|
|
* fix here. No need to parse TLV 22 (with bugs) while it is
|
|
* already done correctly!!
|
|
*/
|
|
dissect_lsp_ext_is_reachability_clv(tvb, pinfo, tree, offset+2, 0, length-2);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_partition_dis_clv()
|
|
*
|
|
* Description:
|
|
* This CLV is used to indicate which system is the designated
|
|
* IS for partition repair. This means just putting out the
|
|
* "id_length"-octet IS.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* int : length of IDs in packet.
|
|
* int : length of clv we are decoding
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_lsp_partition_dis_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length, int length)
|
|
{
|
|
if ( length < id_length ) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"short lsp partition DIS(%d vs %d)", length, id_length );
|
|
return;
|
|
}
|
|
/*
|
|
* Gotta build a sub-tree for all our pieces
|
|
*/
|
|
proto_tree_add_item( tree, hf_isis_lsp_partition_designated_l2_is, tvb, offset, id_length, ENC_NA);
|
|
|
|
length -= id_length;
|
|
offset += id_length;
|
|
if ( length > 0 ) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_long_packet, tvb, offset, -1,
|
|
"Long lsp partition DIS, %d left over", length );
|
|
return;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_lsp_prefix_neighbors_clv()
|
|
*
|
|
* Description:
|
|
* The prefix CLV describes what other (OSI) networks we can reach
|
|
* and what their cost is. It is built from a metric block
|
|
* (see dissect_metric) followed by n addresses.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to fill out. May be NULL
|
|
* int : offset into packet data where we are.
|
|
* int : length of IDs in packet.
|
|
* int : length of clv we are decoding
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_lsp_prefix_neighbors_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
int id_length _U_, int length)
|
|
{
|
|
char *sbuf;
|
|
int mylen;
|
|
|
|
if ( length < 4 ) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"Short lsp prefix neighbors (%d vs 4)", length );
|
|
return;
|
|
}
|
|
if ( tree ) {
|
|
dissect_metric (tvb, tree, offset,
|
|
tvb_get_guint8(tvb, offset), "Default", TRUE );
|
|
dissect_metric (tvb, tree, offset+1,
|
|
tvb_get_guint8(tvb, offset+1), "Delay", FALSE );
|
|
dissect_metric (tvb, tree, offset+2,
|
|
tvb_get_guint8(tvb, offset+2), "Expense", FALSE );
|
|
dissect_metric (tvb, tree, offset+3,
|
|
tvb_get_guint8(tvb, offset+3), "Error", FALSE );
|
|
}
|
|
offset += 4;
|
|
length -= 4;
|
|
while ( length > 0 ) {
|
|
mylen = tvb_get_guint8(tvb, offset);
|
|
length--;
|
|
if (length<=0) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_short_packet, tvb, offset, -1,
|
|
"Zero payload space after length in prefix neighbor" );
|
|
return;
|
|
}
|
|
if ( mylen > length) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_long_packet, tvb, offset, -1,
|
|
"Integral length of prefix neighbor too long (%d vs %d)", mylen, length );
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* Lets turn the area address into "standard" 0000.0000.etc
|
|
* format string.
|
|
*/
|
|
sbuf = print_area( tvb_get_ptr(tvb, offset+1, mylen), mylen );
|
|
/* and spit it out */
|
|
if ( tree ) {
|
|
proto_tree_add_text ( tree, tvb, offset, mylen + 1,
|
|
"Area address (%d): %s", mylen, sbuf );
|
|
}
|
|
offset += mylen + 1;
|
|
length -= mylen; /* length already adjusted for len fld*/
|
|
}
|
|
}
|
|
|
|
static void isis_lsp_checkum_additional_info(tvbuff_t * tvb, packet_info * pinfo,
|
|
proto_item * it_cksum, int offset, gboolean is_cksum_correct)
|
|
{
|
|
proto_tree * checksum_tree;
|
|
proto_item * item;
|
|
|
|
checksum_tree = proto_item_add_subtree(it_cksum, ett_isis_lsp_cksum);
|
|
item = proto_tree_add_boolean(checksum_tree, hf_isis_lsp_checksum_good, tvb,
|
|
offset, 2, is_cksum_correct);
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
item = proto_tree_add_boolean(checksum_tree, hf_isis_lsp_checksum_bad, tvb,
|
|
offset, 2, !is_cksum_correct);
|
|
PROTO_ITEM_SET_GENERATED(item);
|
|
if (!is_cksum_correct) {
|
|
expert_add_info(pinfo, item, &ie_isis_lsp_checksum_bad);
|
|
col_append_str(pinfo->cinfo, COL_INFO, " [ISIS CHECKSUM INCORRECT]");
|
|
}
|
|
}
|
|
|
|
static const isis_clv_handle_t clv_l1_lsp_opts[] = {
|
|
{
|
|
ISIS_CLV_AREA_ADDRESS,
|
|
"Area address(es)",
|
|
&ett_isis_lsp_clv_area_addr,
|
|
dissect_lsp_area_address_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IS_REACH,
|
|
"IS Reachability",
|
|
&ett_isis_lsp_clv_is_neighbors,
|
|
dissect_lsp_l1_is_neighbors_clv
|
|
},
|
|
{
|
|
ISIS_CLV_ES_NEIGHBORS,
|
|
"ES Neighbor(s)",
|
|
&ett_isis_lsp_clv_is_neighbors,
|
|
dissect_lsp_l1_es_neighbors_clv
|
|
},
|
|
{
|
|
ISIS_CLV_EXTD_IS_REACH,
|
|
"Extended IS reachability",
|
|
&ett_isis_lsp_clv_ext_is_reachability,
|
|
dissect_lsp_ext_is_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_INT_IP_REACH,
|
|
"IP Internal reachability",
|
|
&ett_isis_lsp_clv_ip_reachability,
|
|
dissect_lsp_ip_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_EXT_IP_REACH,
|
|
"IP External reachability",
|
|
&ett_isis_lsp_clv_ip_reachability,
|
|
dissect_lsp_ip_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_EXTD_IP_REACH,
|
|
"Extended IP Reachability",
|
|
&ett_isis_lsp_clv_ext_ip_reachability,
|
|
dissect_lsp_ext_ip_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP6_REACH,
|
|
"IPv6 reachability",
|
|
&ett_isis_lsp_clv_ipv6_reachability,
|
|
dissect_lsp_ipv6_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_PROTOCOLS_SUPPORTED,
|
|
"Protocols supported",
|
|
&ett_isis_lsp_clv_nlpid,
|
|
dissect_lsp_nlpid_clv
|
|
},
|
|
{
|
|
ISIS_CLV_HOSTNAME,
|
|
"Hostname",
|
|
&ett_isis_lsp_clv_hostname,
|
|
dissect_lsp_hostname_clv
|
|
},
|
|
{
|
|
ISIS_CLV_TE_ROUTER_ID,
|
|
"Traffic Engineering Router ID",
|
|
&ett_isis_lsp_clv_te_router_id,
|
|
dissect_lsp_te_router_id_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP_ADDR,
|
|
"IP Interface address(es)",
|
|
&ett_isis_lsp_clv_ipv4_int_addr,
|
|
dissect_lsp_ip_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP6_ADDR,
|
|
"IPv6 Interface address(es)",
|
|
&ett_isis_lsp_clv_ipv6_int_addr,
|
|
dissect_lsp_ipv6_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_CAP,
|
|
"MT-Capability",
|
|
&ett_isis_lsp_clv_mt_cap,
|
|
dissect_isis_lsp_clv_mt_cap
|
|
},
|
|
{
|
|
ISIS_CLV_AUTHENTICATION,
|
|
"Authentication",
|
|
&ett_isis_lsp_clv_authentication,
|
|
dissect_lsp_authentication_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP_AUTHENTICATION,
|
|
"IP Authentication",
|
|
&ett_isis_lsp_clv_ip_authentication,
|
|
dissect_lsp_ip_authentication_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_SUPPORTED,
|
|
"Multi Topology supported",
|
|
&ett_isis_lsp_clv_mt,
|
|
dissect_lsp_mt_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_IS_REACH,
|
|
"Multi Topology IS Reachability",
|
|
&ett_isis_lsp_clv_mt_is,
|
|
dissect_lsp_mt_is_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_IP_REACH,
|
|
"Multi Topology Reachable IPv4 Prefixes",
|
|
&ett_isis_lsp_clv_mt_reachable_IPv4_prefx,
|
|
dissect_lsp_mt_reachable_IPv4_prefx_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_IP6_REACH,
|
|
"Multi Topology Reachable IPv6 Prefixes",
|
|
&ett_isis_lsp_clv_mt_reachable_IPv6_prefx,
|
|
dissect_lsp_mt_reachable_IPv6_prefx_clv
|
|
},
|
|
{
|
|
ISIS_CLV_RT_CAPABLE,
|
|
"Router Capability",
|
|
&ett_isis_lsp_clv_rt_capable_IPv4_prefx,
|
|
dissect_isis_rt_capable_clv
|
|
},
|
|
{
|
|
ISIS_GRP_ADDR,
|
|
"GROUP ADDRESS TLV",
|
|
&ett_isis_lsp_clv_grp_address_IPv4_prefx,
|
|
dissect_isis_grp_address_clv
|
|
},
|
|
{
|
|
0,
|
|
"",
|
|
NULL,
|
|
NULL
|
|
}
|
|
};
|
|
|
|
static const isis_clv_handle_t clv_l2_lsp_opts[] = {
|
|
{
|
|
ISIS_CLV_AREA_ADDRESS,
|
|
"Area address(es)",
|
|
&ett_isis_lsp_clv_area_addr,
|
|
dissect_lsp_area_address_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IS_REACH,
|
|
"IS Reachability",
|
|
&ett_isis_lsp_clv_is_neighbors,
|
|
dissect_lsp_l2_is_neighbors_clv
|
|
},
|
|
{
|
|
ISIS_CLV_EXTD_IS_REACH,
|
|
"Extended IS reachability",
|
|
&ett_isis_lsp_clv_ext_is_reachability,
|
|
dissect_lsp_ext_is_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_PARTITION_DIS,
|
|
"Partition Designated Level 2 IS",
|
|
&ett_isis_lsp_clv_partition_dis,
|
|
dissect_lsp_partition_dis_clv
|
|
},
|
|
{
|
|
ISIS_CLV_PREFIX_NEIGHBORS,
|
|
"Prefix neighbors",
|
|
&ett_isis_lsp_clv_prefix_neighbors,
|
|
dissect_lsp_prefix_neighbors_clv
|
|
},
|
|
{
|
|
ISIS_CLV_INT_IP_REACH,
|
|
"IP Internal reachability",
|
|
&ett_isis_lsp_clv_ip_reachability,
|
|
dissect_lsp_ip_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_EXT_IP_REACH,
|
|
"IP External reachability",
|
|
&ett_isis_lsp_clv_ip_reachability,
|
|
dissect_lsp_ip_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_PROTOCOLS_SUPPORTED,
|
|
"Protocols supported",
|
|
&ett_isis_lsp_clv_nlpid,
|
|
dissect_lsp_nlpid_clv
|
|
},
|
|
{
|
|
ISIS_CLV_HOSTNAME,
|
|
"Hostname",
|
|
&ett_isis_lsp_clv_hostname,
|
|
dissect_lsp_hostname_clv
|
|
},
|
|
{
|
|
ISIS_CLV_TE_ROUTER_ID,
|
|
"Traffic Engineering Router ID",
|
|
&ett_isis_lsp_clv_te_router_id,
|
|
dissect_lsp_te_router_id_clv
|
|
},
|
|
{
|
|
ISIS_CLV_EXTD_IP_REACH,
|
|
"Extended IP Reachability",
|
|
&ett_isis_lsp_clv_ext_ip_reachability,
|
|
dissect_lsp_ext_ip_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP6_REACH,
|
|
"IPv6 reachability",
|
|
&ett_isis_lsp_clv_ipv6_reachability,
|
|
dissect_lsp_ipv6_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP_ADDR,
|
|
"IP Interface address(es)",
|
|
&ett_isis_lsp_clv_ipv4_int_addr,
|
|
dissect_lsp_ip_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP6_ADDR,
|
|
"IPv6 Interface address(es)",
|
|
&ett_isis_lsp_clv_ipv6_int_addr,
|
|
dissect_lsp_ipv6_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_CAP,
|
|
"MT-Capability",
|
|
&ett_isis_lsp_clv_mt_cap,
|
|
dissect_isis_lsp_clv_mt_cap
|
|
},
|
|
{
|
|
ISIS_CLV_AUTHENTICATION,
|
|
"Authentication",
|
|
&ett_isis_lsp_clv_authentication,
|
|
dissect_lsp_authentication_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP_AUTHENTICATION,
|
|
"IP Authentication",
|
|
&ett_isis_lsp_clv_ip_authentication,
|
|
dissect_lsp_ip_authentication_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_SUPPORTED,
|
|
"Multi Topology",
|
|
&ett_isis_lsp_clv_mt,
|
|
dissect_lsp_mt_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_IS_REACH,
|
|
"Multi Topology IS Reachability",
|
|
&ett_isis_lsp_clv_mt_is,
|
|
dissect_lsp_mt_is_reachability_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_IP_REACH,
|
|
"Multi Topology Reachable IPv4 Prefixes",
|
|
&ett_isis_lsp_clv_mt_reachable_IPv4_prefx,
|
|
dissect_lsp_mt_reachable_IPv4_prefx_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_IP6_REACH,
|
|
"Multi Topology Reachable IPv6 Prefixes",
|
|
&ett_isis_lsp_clv_mt_reachable_IPv6_prefx,
|
|
dissect_lsp_mt_reachable_IPv6_prefx_clv
|
|
},
|
|
{
|
|
0,
|
|
"",
|
|
NULL,
|
|
NULL
|
|
}
|
|
};
|
|
|
|
/*
|
|
* Name: isis_dissect_isis_lsp()
|
|
*
|
|
* Description:
|
|
* Print out the LSP part of the main header and then call the CLV
|
|
* de-mangler with the right list of valid CLVs.
|
|
*
|
|
* Input:
|
|
* tvbuff_t * : tvbuffer for packet data
|
|
* proto_tree * : protocol display tree to add to. May be NULL.
|
|
* int offset : our offset into packet data.
|
|
* int : LSP type, a la packet-isis.h ISIS_TYPE_* values
|
|
* int : header length of packet.
|
|
* int : length of IDs in packet.
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
static void
|
|
dissect_isis_lsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset,
|
|
const isis_clv_handle_t *opts, int header_length, int id_length)
|
|
{
|
|
proto_item *ti, *to, *ta;
|
|
proto_tree *lsp_tree = NULL, *info_tree, *att_tree;
|
|
guint16 pdu_length, lifetime, checksum, cacl_checksum=0;
|
|
guint8 lsp_info;
|
|
int len, offset_checksum;
|
|
proto_item *it_cksum;
|
|
char* system_id;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "ISIS LSP");
|
|
|
|
ti = proto_tree_add_item(tree, proto_isis_lsp, tvb, offset, -1, ENC_NA);
|
|
lsp_tree = proto_item_add_subtree(ti, ett_isis_lsp);
|
|
|
|
pdu_length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_uint(lsp_tree, hf_isis_lsp_pdu_length, tvb,
|
|
offset, 2, pdu_length);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(lsp_tree, hf_isis_lsp_remaining_life,
|
|
tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
lifetime = tvb_get_ntohs(tvb, offset);
|
|
offset += 2;
|
|
offset_checksum = offset;
|
|
|
|
proto_tree_add_item(lsp_tree, hf_isis_lsp_lsp_id, tvb, offset, id_length + 2, ENC_NA);
|
|
system_id = print_system_id( tvb_get_ptr(tvb, offset, id_length+2), id_length+2);
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, ", LSP-ID: %s", system_id);
|
|
|
|
offset += (id_length + 2);
|
|
|
|
proto_tree_add_item(lsp_tree, hf_isis_lsp_sequence_number,
|
|
tvb, offset, 4, ENC_BIG_ENDIAN);
|
|
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, ", Sequence: 0x%08x, Lifetime: %5us",
|
|
tvb_get_ntohl(tvb, offset),
|
|
tvb_get_ntohs(tvb, offset - (id_length+2+2)));
|
|
|
|
offset += 4;
|
|
|
|
checksum = lifetime ? tvb_get_ntohs(tvb, offset) : 0;
|
|
switch (check_and_get_checksum(tvb, offset_checksum, pdu_length-12, checksum, offset, &cacl_checksum)) {
|
|
case NO_CKSUM :
|
|
checksum = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_uint_format_value(lsp_tree, hf_isis_lsp_checksum, tvb, offset, 2, checksum,
|
|
"0x%04x [unused]", checksum);
|
|
break;
|
|
case DATA_MISSING :
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_long_packet, tvb, offset, -1,
|
|
"Packet length %d went beyond packet",
|
|
tvb_length_remaining(tvb, offset_checksum));
|
|
break;
|
|
case CKSUM_NOT_OK :
|
|
it_cksum = proto_tree_add_uint_format_value(lsp_tree, hf_isis_lsp_checksum, tvb, offset, 2, checksum,
|
|
"0x%04x [incorrect, should be 0x%04x]",
|
|
checksum, cacl_checksum);
|
|
isis_lsp_checkum_additional_info(tvb, pinfo, it_cksum, offset, FALSE);
|
|
break;
|
|
case CKSUM_OK :
|
|
it_cksum = proto_tree_add_uint_format_value(lsp_tree, hf_isis_lsp_checksum, tvb, offset, 2, checksum,
|
|
"0x%04x [correct]", checksum);
|
|
isis_lsp_checkum_additional_info(tvb, pinfo, it_cksum, offset, TRUE);
|
|
break;
|
|
}
|
|
offset += 2;
|
|
|
|
if (tree) {
|
|
/*
|
|
* P | ATT | HIPPITY | IS TYPE description.
|
|
*/
|
|
lsp_info = tvb_get_guint8(tvb, offset);
|
|
to = proto_tree_add_text(lsp_tree, tvb, offset, 1,
|
|
"Type block(0x%02x): Partition Repair:%d, Attached bits:%d, Overload bit:%d, IS type:%d",
|
|
lsp_info,
|
|
ISIS_LSP_PARTITION(lsp_info),
|
|
ISIS_LSP_ATT(lsp_info),
|
|
ISIS_LSP_HIPPITY(lsp_info),
|
|
ISIS_LSP_IS_TYPE(lsp_info)
|
|
);
|
|
|
|
info_tree = proto_item_add_subtree(to, ett_isis_lsp_info);
|
|
proto_tree_add_boolean(info_tree, hf_isis_lsp_p, tvb, offset, 1, lsp_info);
|
|
ta = proto_tree_add_uint(info_tree, hf_isis_lsp_att, tvb, offset, 1, lsp_info);
|
|
att_tree = proto_item_add_subtree(ta, ett_isis_lsp_att);
|
|
proto_tree_add_item(att_tree, hf_isis_lsp_error_metric, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(att_tree, hf_isis_lsp_expense_metric, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(att_tree, hf_isis_lsp_delay_metric, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(att_tree, hf_isis_lsp_default_metric, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_boolean(info_tree, hf_isis_lsp_hippity, tvb, offset, 1, lsp_info);
|
|
proto_tree_add_uint(info_tree, hf_isis_lsp_is_type, tvb, offset, 1, lsp_info);
|
|
}
|
|
offset += 1;
|
|
|
|
len = pdu_length - header_length;
|
|
if (len < 0) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_lsp_long_packet, tvb, offset, -1,
|
|
"packet header length %d went beyond packet",
|
|
header_length );
|
|
return;
|
|
}
|
|
/*
|
|
* Now, we need to decode our CLVs. We need to pass in
|
|
* our list of valid ones!
|
|
*/
|
|
isis_dissect_clvs(tvb, pinfo, lsp_tree, offset,
|
|
opts, &ei_isis_lsp_short_packet, len, id_length, ett_isis_lsp_clv_unknown );
|
|
}
|
|
|
|
static int
|
|
dissect_isis_l1_lsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
|
|
{
|
|
isis_data_t* isis = (isis_data_t*)data;
|
|
dissect_isis_lsp(tvb, pinfo, tree, 0,
|
|
clv_l1_lsp_opts, isis->header_length, isis->system_id_len);
|
|
return tvb_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_isis_l2_lsp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
|
|
{
|
|
isis_data_t* isis = (isis_data_t*)data;
|
|
dissect_isis_lsp(tvb, pinfo, tree, 0,
|
|
clv_l2_lsp_opts, isis->header_length, isis->system_id_len);
|
|
return tvb_length(tvb);
|
|
}
|
|
|
|
void
|
|
proto_register_isis_lsp(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_isis_lsp_pdu_length,
|
|
{ "PDU length", "isis.lsp.pdu_length", FT_UINT16,
|
|
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_remaining_life,
|
|
{ "Remaining lifetime", "isis.lsp.remaining_life", FT_UINT16,
|
|
BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_lsp_id,
|
|
{ "LSP-ID", "isis.lsp.lsp_id", FT_SYSTEM_ID,
|
|
BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_hostname,
|
|
{ "Hostname", "isis.lsp.hostname", FT_STRING,
|
|
BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_sequence_number,
|
|
{ "Sequence number", "isis.lsp.sequence_number",
|
|
FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_checksum,
|
|
{ "Checksum", "isis.lsp.checksum",FT_UINT16,
|
|
BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_checksum_good,
|
|
{ "Good Checksum", "isis.lsp.checksum_good", FT_BOOLEAN, BASE_NONE,
|
|
NULL, 0x0, "Good IS-IS LSP Checksum", HFILL }},
|
|
|
|
{ &hf_isis_lsp_checksum_bad,
|
|
{ "Bad Checksum", "isis.lsp.checksum_bad", FT_BOOLEAN, BASE_NONE,
|
|
NULL, 0x0, "Bad IS-IS LSP Checksum", HFILL }},
|
|
|
|
{ &hf_isis_lsp_clv_ipv4_int_addr,
|
|
{ "IPv4 interface address", "isis.lsp.clv_ipv4_int_addr", FT_IPv4,
|
|
BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_clv_ipv6_int_addr,
|
|
{ "IPv6 interface address", "isis.lsp.clv_ipv6_int_addr", FT_IPv6,
|
|
BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_clv_te_router_id,
|
|
{ "Traffic Engineering Router ID", "isis.lsp.clv_te_router_id", FT_IPv4,
|
|
BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_clv_mt,
|
|
{ "MT-ID", "isis.lsp.clv_mt",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_p,
|
|
{ "Partition Repair", "isis.lsp.partition_repair", FT_BOOLEAN, 8,
|
|
TFS(&tfs_supported_not_supported), ISIS_LSP_PARTITION_MASK,
|
|
"If set, this router supports the optional Partition Repair function", HFILL }},
|
|
|
|
{ &hf_isis_lsp_att,
|
|
{ "Attachment", "isis.lsp.att", FT_UINT8, BASE_DEC,
|
|
NULL, ISIS_LSP_ATT_MASK,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_hippity,
|
|
{ "Overload bit", "isis.lsp.overload", FT_BOOLEAN, 8,
|
|
TFS(&tfs_set_notset), ISIS_LSP_HIPPITY_MASK,
|
|
"If set, this router will not be used by any decision process to calculate routes", HFILL }},
|
|
|
|
{ &hf_isis_lsp_root_id,
|
|
{ "Root Bridge ID", "isis.lsp.root.id", FT_UINT64, BASE_HEX,
|
|
NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_is_type,
|
|
{ "Type of Intermediate System", "isis.lsp.is_type", FT_UINT8, BASE_DEC,
|
|
VALS(isis_lsp_istype_vals), ISIS_LSP_IS_TYPE_MASK,
|
|
NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_spb_link_metric,
|
|
{ "SPB Link Metric", "isis.lsp.spb.link_metric",
|
|
FT_UINT24, BASE_HEX_DEC, NULL, 0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_spb_port_count,
|
|
{ "Number of Ports", "isis.lsp.spb.port_count",
|
|
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_spb_port_id,
|
|
{ "Port Id", "isis.lsp.spb.port_id",
|
|
FT_UINT16, BASE_HEX_DEC, NULL, 0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_spb_sr_bit,
|
|
{ "SR Bit", "isis.lsp.spb.sr_bit",
|
|
FT_UINT8, BASE_DEC, NULL, 0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_lsp_spb_spvid,
|
|
{ "SPVID", "isis.lsp.spb.spvid",
|
|
FT_UINT16, BASE_HEX_DEC, NULL, 0, NULL, HFILL }},
|
|
|
|
/* Generated from convert_proto_tree_add_text.pl */
|
|
{ &hf_isis_lsp_mt_id_reserved, { "Reserved", "isis.lsp.reserved", FT_UINT16, BASE_HEX, NULL, ISIS_LSP_MT_MSHIP_RES_MASK, NULL, HFILL }},
|
|
{ &hf_isis_lsp_mt_id, { "MT ID", "isis.lsp.mt_id", FT_UINT16, BASE_DEC, NULL, ISIS_LSP_MT_MSHIP_ID_MASK, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_ipv4_prefix, { "IPv4 prefix", "isis.lsp.ip_reachability.ipv4_prefix", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_default_metric, { "Default Metric", "isis.lsp.ip_reachability.default_metric", FT_UINT8, BASE_DEC, NULL, 0x3F, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_delay_metric, { "Delay Metric", "isis.lsp.ip_reachability.delay_metric", FT_UINT8, BASE_DEC, NULL, 0x3F, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_expense_metric, { "Expense Metric", "isis.lsp.ip_reachability.expense_metric", FT_UINT8, BASE_DEC, NULL, 0x3F, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_error_metric, { "Error Metric", "isis.lsp.ip_reachability.error_metric", FT_UINT8, BASE_DEC, NULL, 0x3F, NULL, HFILL }},
|
|
{ &hf_isis_lsp_32_bit_administrative_tag, { "32-Bit Administrative tag", "isis.lsp.32_bit_administrative_tag", FT_UINT32, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_64_bit_administrative_tag, { "64-Bit Administrative tag", "isis.lsp.64_bit_administrative_tag", FT_UINT64, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ext_ip_reachability_ipv4_prefix, { "IPv4 prefix", "isis.lsp.ext_ip_reachability.ipv4_prefix", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ext_ip_reachability_metric, { "Metric", "isis.lsp.ext_ip_reachability.metric", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ext_ip_reachability_distribution, { "Distribution", "isis.lsp.ext_ip_reachability.distribution", FT_BOOLEAN, 8, TFS(&tfs_up_down), 0x80, NULL, HFILL }},
|
|
{ &hf_isis_lsp_grp_address_length, { "Length", "isis.lsp.grp_address.length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_grp_address_topology_id, { "Topology ID", "isis.lsp.grp_address.topology_id", FT_UINT16, BASE_DEC, NULL, 0x0fff, NULL, HFILL }},
|
|
{ &hf_isis_lsp_grp_address_vlan_id, { "VLAN ID", "isis.lsp.grp_address.vlan_id", FT_UINT16, BASE_DEC, NULL, 0x0fff, NULL, HFILL }},
|
|
{ &hf_isis_lsp_grp_address_number_of_records, { "Number of records", "isis.lsp.grp_address.number_of_records", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_grp_address_number_of_sources, { "Number of sources", "isis.lsp.grp_address.number_of_sources", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_grp_address_group_address, { "Group Address", "isis.lsp.grp_address.group_address", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_grp_address_source_address, { "Source Address", "isis.lsp.grp_address.source_address", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_trill_length, { "Length", "isis.lsp.rt_capable.trill.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_trill_maximum_version, { "Maximum version", "isis.lsp.rt_capable.trill.maximum_version", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_trees_length, { "Length", "isis.lsp.rt_capable.trees.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_trees_nof_trees_to_compute, { "Nof. trees to compute", "isis.lsp.rt_capable.trees.nof_trees_to_compute", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_trees_maximum_nof_trees_to_compute, { "Maximum nof. trees to compute", "isis.lsp.rt_capable.trees.maximum_nof_trees_to_compute", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_trees_nof_trees_to_use, { "Nof. trees to use", "isis.lsp.rt_capable.trees.nof_trees_to_use", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_tree_root_id_length, { "Length", "isis.lsp.rt_capable.tree_root_id.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_tree_root_id_starting_tree_no, { "Starting tree no", "isis.lsp.rt_capable.tree_root_id.starting_tree_no", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_tree_root_id_nickname, { "Nickname", "isis.lsp.rt_capable.tree_root_id.nickname", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_nickname_length, { "Length", "isis.lsp.rt_capable.nickname.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_nickname_nickname_priority, { "Nickname priority", "isis.lsp.rt_capable.nickname.nickname_priority", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_nickname_tree_root_priority, { "Tree root priority", "isis.lsp.rt_capable.nickname.tree_root_priority", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_nickname_nickname, { "Nickname", "isis.lsp.rt_capable.nickname.nickname", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_interested_vlans_length, { "Length", "isis.lsp.rt_capable.interested_vlans.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_interested_vlans_nickname, { "Nickname", "isis.lsp.rt_capable.interested_vlans.nickname", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_interested_vlans_multicast_ipv4, { "IPv4 multicast router", "isis.lsp.rt_capable.interested_vlans.multicast_ipv4", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x8000, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_interested_vlans_multicast_ipv6, { "IPv6 multicast router", "isis.lsp.rt_capable.interested_vlans.multicast_ipv6", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x4000, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_interested_vlans_vlan_start_id, { "Vlan start id", "isis.lsp.rt_capable.interested_vlans.vlan_start_id", FT_UINT16, BASE_HEX, NULL, 0x0fff, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_interested_vlans_vlan_end_id, { "Vlan end id", "isis.lsp.rt_capable.interested_vlans.vlan_end_id", FT_UINT16, BASE_HEX, NULL, 0x0fff, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_interested_vlans_afs_lost_counter, { "Appointed forward state lost counter", "isis.lsp.rt_capable.interested_vlans.afs_lost_counter", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_tree_used_id_length, { "Length", "isis.lsp.rt_capable.tree_used_id.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_tree_used_id_starting_tree_no, { "Starting tree no", "isis.lsp.rt_capable.tree_used_id.starting_tree_no", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_tree_used_id_nickname, { "Nickname", "isis.lsp.rt_capable.tree_used_id.nickname", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_vlan_group_length, { "Length", "isis.lsp.rt_capable.vlan_group.length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_vlan_group_primary_vlan_id, { "Primary vlan id", "isis.lsp.rt_capable.vlan_group.primary_vlan_id", FT_UINT16, BASE_DEC, NULL, 0x0fff, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_vlan_group_secondary_vlan_id, { "Secondary vlan id", "isis.lsp.rt_capable.vlan_group.secondary_vlan_id", FT_UINT16, BASE_DEC, NULL, 0x0fff, NULL, HFILL }},
|
|
{ &hf_isis_lsp_rt_capable_vlan_group_nth_secondary_vlan_id, { "%dth secondary vlan id", "isis.lsp.rt_capable.vlan_group.nth_secondary_vlan_id", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ipv6_reachability_ipv6_prefix, { "IPv6 prefix", "isis.lsp.ipv6_reachability.ipv6_prefix", FT_IPv6, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ipv6_reachability_metric, { "Metric", "isis.lsp.ipv6_reachability.metric", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ipv6_reachability_distribution, { "Distribution", "isis.lsp.ipv6_reachability.distribution", FT_BOOLEAN, 8, TFS(&tfs_up_down), 0x80, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ipv6_reachability_distribution_internal, { "Distribution", "isis.lsp.ipv6_reachability.distribution_internal", FT_BOOLEAN, 8, TFS(&tfs_internal_external), 0x40, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ipv6_reachability_reserved_bits, { "Reserved bits", "isis.lsp.ipv6_reachability.reserved_bits", FT_UINT8, BASE_HEX, NULL, 0x1F, NULL, HFILL }},
|
|
{ &hf_isis_lsp_mt_cap_spb_instance_cist_root_identifier, { "CIST Root Identifier", "isis.lsp.mt_cap_spb_instance.cist_root_identifier", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_mt_cap_spb_instance_cist_external_root_path_cost, { "CIST External Root Path Cost", "isis.lsp.mt_cap_spb_instance.cist_external_root_path_cost", FT_UINT32, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_mt_cap_spb_instance_bridge_priority, { "Bridge Priority", "isis.lsp.mt_cap_spb_instance.bridge_priority", FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_mt_cap_spb_instance_v, { "V", "isis.lsp.mt_cap_spb_instance.v", FT_BOOLEAN, 32, NULL, 0x00100000, NULL, HFILL }},
|
|
{ &hf_isis_lsp_mt_cap_spb_instance_number_of_trees, { "Number of Trees", "isis.lsp.mt_cap_spb_instance.number_of_trees", FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_mt_cap_spbm_service_identifier_b_mac, { "B-MAC", "isis.lsp.mt_cap_spbm_service_identifier.b_mac", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_mt_cap_spbm_service_identifier_base_vid, { "Base-VID", "isis.lsp.mt_cap_spbm_service_identifier.base_vid", FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_mt_cap_mtid, { "MTID", "isis.lsp.mt_cap.mtid", FT_UINT16, BASE_HEX, NULL, 0xfff, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_reserved, { "Reserved", "isis.lsp.eis_neighbors_clv_inner.reserved", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_es_neighbor, { "ES Neighbor", "isis.lsp.eis_neighbors.es_neighbor", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_is_neighbor, { "IS Neighbor", "isis.lsp.eis_neighbors.is_neighbor", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_default_metric, { "Default Metric", "isis.lsp.eis_neighbors.default_metric", FT_UINT8, BASE_DEC, NULL, 0x3F, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_delay_metric, { "Delay Metric", "isis.lsp.eis_neighbors.delay_metric", FT_UINT8, BASE_DEC, NULL, 0x3F, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_expense_metric, { "Expense Metric", "isis.lsp.eis_neighbors.expense_metric", FT_UINT8, BASE_DEC, NULL, 0x3F, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_error_metric, { "Error Metric", "isis.lsp.eis_neighbors.error_metric", FT_UINT8, BASE_DEC, NULL, 0x3F, NULL, HFILL }},
|
|
{ &hf_isis_lsp_maximum_link_bandwidth, { "Maximum link bandwidth", "isis.lsp.maximum_link_bandwidth", FT_FLOAT, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_reservable_link_bandwidth, { "Reservable link bandwidth", "isis.lsp.reservable_link_bandwidth", FT_FLOAT, BASE_NONE, NULL, 0x0, NULL, HFILL }},
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|
{ &hf_isis_lsp_ext_is_reachability_is_neighbor, { "IS neighbor", "isis.lsp.ext_is_reachability.is_neighbor", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ext_is_reachability_metric, { "Metric", "isis.lsp.ext_is_reachability.metric", FT_UINT24, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ext_is_reachability_link_local_identifier, { "Link Local Identifier", "isis.lsp.ext_is_reachability.link_local_identifier", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ext_is_reachability_link_remote_identifier, { "Link Remote Identifier", "isis.lsp.ext_is_reachability.link_remote_identifier", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ext_is_reachability_ipv4_interface_address, { "IPv4 interface address", "isis.lsp.ext_is_reachability.ipv4_interface_address", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ext_is_reachability_ipv4_neighbor_address, { "IPv4 neighbor address", "isis.lsp.ext_is_reachability.ipv4_neighbor_address", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ext_is_reachability_traffic_engineering_default_metric, { "Traffic engineering default metric", "isis.lsp.ext_is_reachability.traffic_engineering_default_metric", FT_UINT24, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_partition_designated_l2_is, { "Partition designated L2 IS", "isis.lsp.partition_designated_l2_is", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_error_metric, { "Error metric", "isis.lsp.error_metric", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x08, NULL, HFILL }},
|
|
{ &hf_isis_lsp_expense_metric, { "Expense metric", "isis.lsp.expense_metric", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x04, NULL, HFILL }},
|
|
{ &hf_isis_lsp_delay_metric, { "Delay metric", "isis.lsp.delay_metric", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x02, NULL, HFILL }},
|
|
{ &hf_isis_lsp_default_metric, { "Default metric", "isis.lsp.default_metric", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x01, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_default_metric_ie, { "Default Metric IE", "isis.lsp.ip_reachability.default_metric_ie", FT_BOOLEAN, 8, TFS(&tfs_external_internal), 0x40, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_delay_metric_support, { "Delay Metric", "isis.lsp.ip_reachability.delay_metric_support", FT_BOOLEAN, 8, TFS(&tfs_notsupported_supported), 0x80, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_expense_metric_support, { "Expense Metric", "isis.lsp.ip_reachability.expense_metric_support", FT_BOOLEAN, 8, TFS(&tfs_notsupported_supported), 0x80, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_error_metric_support, { "Error Metric", "isis.lsp.ip_reachability.error_metric_support", FT_BOOLEAN, 8, TFS(&tfs_notsupported_supported), 0x80, NULL, HFILL }},
|
|
{ &hf_isis_lsp_mt_cap_spsourceid, { "SPSourceId", "isis.lsp.mt_cap.spsourceid", FT_UINT32, BASE_HEX_DEC, NULL, 0xfffff, NULL, HFILL }},
|
|
{ &hf_isis_lsp_mt_cap_overload, { "Overload", "isis.lsp.overload", FT_BOOLEAN, 16, NULL, 0x8000, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_default_metric_ie, { "Default Metric", "isis.lsp.eis_neighbors.default_metric_ie", FT_BOOLEAN, 8, TFS(&tfs_external_internal), 0x40, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_delay_metric_supported, { "Delay Metric", "isis.lsp.eis_neighbors_delay_metric.supported", FT_BOOLEAN, 8, TFS(&tfs_notsupported_supported), 0x80, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_expense_metric_supported, { "Expense Metric", "isis.lsp.eis_neighbors.expense_metric_supported", FT_BOOLEAN, 8, TFS(&tfs_notsupported_supported), 0x80, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_error_metric_supported, { "Error Metric", "isis.lsp.eis_neighbors.error_metric_supported", FT_BOOLEAN, 8, TFS(&tfs_notsupported_supported), 0x80, NULL, HFILL }},
|
|
{ &hf_isis_lsp_unrsv_bw_priority_level, { "priority level", "isis.lsp.unrsv_bw.priority_level", FT_FLOAT, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_distribution, { "Distribution", "isis.lsp.ip_reachability.distribution", FT_BOOLEAN, 8, TFS(&tfs_up_down), 0x80, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_delay_metric_ie, { "Delay Metric", "isis.lsp.ip_reachability.delay_metric_ie", FT_BOOLEAN, 8, TFS(&tfs_external_internal), 0x40, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_expense_metric_ie, { "Expense Metric", "isis.lsp.ip_reachability.expense_metric_ie", FT_BOOLEAN, 8, TFS(&tfs_external_internal), 0x40, NULL, HFILL }},
|
|
{ &hf_isis_lsp_ip_reachability_error_metric_ie, { "Error Metric", "isis.lsp.ip_reachability.error_metric_ie", FT_BOOLEAN, 8, TFS(&tfs_external_internal), 0x40, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_delay_metric_ie, { "Delay Metric", "isis.lsp.eis_neighbors.delay_metric_ie", FT_BOOLEAN, 8, TFS(&tfs_external_internal), 0x40, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_expense_metric_ie, { "Expense Metric", "isis.lsp.eis_neighbors.expense_metric_ie", FT_BOOLEAN, 8, TFS(&tfs_external_internal), 0x40, NULL, HFILL }},
|
|
{ &hf_isis_lsp_eis_neighbors_error_metric_ie, { "Error Metric", "isis.lsp.eis_neighbors.error_metric_ie", FT_BOOLEAN, 8, TFS(&tfs_external_internal), 0x40, NULL, HFILL }},
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_isis_lsp,
|
|
&ett_isis_lsp_info,
|
|
&ett_isis_lsp_att,
|
|
&ett_isis_lsp_cksum,
|
|
&ett_isis_lsp_clv_area_addr,
|
|
&ett_isis_lsp_clv_is_neighbors,
|
|
&ett_isis_lsp_clv_ext_is_reachability, /* CLV 22 */
|
|
&ett_isis_lsp_part_of_clv_ext_is_reachability,
|
|
&ett_isis_lsp_subclv_admin_group,
|
|
&ett_isis_lsp_subclv_unrsv_bw,
|
|
&ett_isis_lsp_subclv_spb_link_metric,
|
|
&ett_isis_lsp_clv_unknown,
|
|
&ett_isis_lsp_clv_partition_dis,
|
|
&ett_isis_lsp_clv_prefix_neighbors,
|
|
&ett_isis_lsp_clv_authentication,
|
|
&ett_isis_lsp_clv_ip_authentication,
|
|
&ett_isis_lsp_clv_nlpid,
|
|
&ett_isis_lsp_clv_hostname,
|
|
&ett_isis_lsp_clv_ipv4_int_addr,
|
|
&ett_isis_lsp_clv_ipv6_int_addr, /* CLV 232 */
|
|
&ett_isis_lsp_clv_mt_cap,
|
|
&ett_isis_lsp_clv_mt_cap_spb_instance,
|
|
&ett_isis_lsp_clv_mt_cap_spbm_service_identifier,
|
|
&ett_isis_lsp_clv_te_router_id,
|
|
&ett_isis_lsp_clv_ip_reachability,
|
|
&ett_isis_lsp_clv_ip_reach_subclv,
|
|
&ett_isis_lsp_clv_ext_ip_reachability, /* CLV 135 */
|
|
&ett_isis_lsp_part_of_clv_ext_ip_reachability,
|
|
&ett_isis_lsp_clv_ipv6_reachability, /* CLV 236 */
|
|
&ett_isis_lsp_part_of_clv_ipv6_reachability,
|
|
&ett_isis_lsp_clv_mt,
|
|
&ett_isis_lsp_clv_mt_is,
|
|
&ett_isis_lsp_part_of_clv_mt_is,
|
|
&ett_isis_lsp_clv_rt_capable_IPv4_prefx,
|
|
&ett_isis_lsp_clv_grp_address_IPv4_prefx, /*CLV 142*/
|
|
&ett_isis_lsp_clv_mt_reachable_IPv4_prefx,
|
|
&ett_isis_lsp_clv_mt_reachable_IPv6_prefx,
|
|
&ett_isis_lsp_clv_mt_cap_spbv_mac_address
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ie_isis_lsp_checksum_bad, { "isis.lsp.checksum_bad.expert", PI_CHECKSUM, PI_ERROR, "Bad checksum", EXPFILL }},
|
|
{ &ei_isis_lsp_short_packet, { "isis.lsp.short_packet", PI_MALFORMED, PI_ERROR, "Short packet", EXPFILL }},
|
|
{ &ei_isis_lsp_long_packet, { "isis.lsp.long_packet", PI_MALFORMED, PI_ERROR, "Long packet", EXPFILL }},
|
|
{ &ei_isis_lsp_subtlv, { "isis.lsp.subtlv.unknown", PI_PROTOCOL, PI_WARN, "Unknown SubTLV", EXPFILL }},
|
|
{ &ei_isis_lsp_authentication, { "isis.lsp.authentication.unknown", PI_PROTOCOL, PI_WARN, "Unknown authentication type", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_isis_lsp;
|
|
|
|
/* Register the protocol name and description */
|
|
proto_isis_lsp = proto_register_protocol(PROTO_STRING_LSP, "ISIS LSP", "isis.lsp");
|
|
|
|
proto_register_field_array(proto_isis_lsp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_isis_lsp = expert_register_protocol(proto_isis_lsp);
|
|
expert_register_field_array(expert_isis_lsp, ei, array_length(ei));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_isis_lsp(void)
|
|
{
|
|
dissector_add_uint("isis.type", ISIS_TYPE_L1_LSP, new_create_dissector_handle(dissect_isis_l1_lsp, proto_isis_lsp));
|
|
dissector_add_uint("isis.type", ISIS_TYPE_L2_LSP, new_create_dissector_handle(dissect_isis_l2_lsp, proto_isis_lsp));
|
|
}
|