1714 lines
65 KiB
C
1714 lines
65 KiB
C
/* packet-isis-hello.c
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* Routines for decoding isis hello packets and their CLVs
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*
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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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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/expert.h>
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#include <epan/nlpid.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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/*
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* Declarations for L1/L2 hello base header.
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*/
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#define ISIS_HELLO_CTYPE_MASK 0x03
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#define ISIS_HELLO_CT_RESERVED_MASK 0xfc
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#define ISIS_HELLO_PRIORITY_MASK 0x7f
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#define ISIS_HELLO_P_RESERVED_MASK 0x80
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#define ISIS_HELLO_TYPE_RESERVED 0
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#define ISIS_HELLO_TYPE_LEVEL_1 1
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#define ISIS_HELLO_TYPE_LEVEL_2 2
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#define ISIS_HELLO_TYPE_LEVEL_12 3
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/*
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* misc. bittest macros
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*/
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#define ISIS_RESTART_RR 0x01
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#define ISIS_RESTART_RA 0x02
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#define ISIS_RESTART_SA 0x04
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#define ISIS_MASK_RESTART_RR(x) ((x)&ISIS_RESTART_RR)
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#define ISIS_MASK_RESTART_RA(x) ((x)&ISIS_RESTART_RA)
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#define ISIS_MASK_RESTART_SA(x) ((x)&ISIS_RESTART_SA)
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void proto_register_isis_hello(void);
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void proto_reg_handoff_isis_hello(void);
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static int proto_isis_hello = -1;
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/* hello packets */
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static int hf_isis_hello_circuit = -1;
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static int hf_isis_hello_circuit_reserved = -1;
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static int hf_isis_hello_source_id = -1;
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static int hf_isis_hello_holding_timer = -1;
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static int hf_isis_hello_pdu_length = -1;
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static int hf_isis_hello_priority = -1;
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static int hf_isis_hello_priority_reserved = -1;
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static int hf_isis_hello_lan_id = -1;
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static int hf_isis_hello_clv_type = -1;
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static int hf_isis_hello_clv_length = -1;
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static int hf_isis_hello_local_circuit_id = -1;
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static int hf_isis_hello_clv_ipv4_int_addr = -1;
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static int hf_isis_hello_clv_ipv6_int_addr = -1;
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/* static int hf_isis_hello_clv_ptp_adj = -1; */
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static int hf_isis_hello_clv_mt = -1;
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static int hf_isis_hello_clv_restart_flags = -1;
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static int hf_isis_hello_clv_restart_flags_rr = -1;
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static int hf_isis_hello_clv_restart_flags_ra = -1;
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static int hf_isis_hello_clv_restart_flags_sa = -1;
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static int hf_isis_hello_clv_restart_remain_time = -1;
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static int hf_isis_hello_clv_restart_neighbor = -1;
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/* Generated from convert_proto_tree_add_text.pl */
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static int hf_isis_hello_extended_local_circuit_id = -1;
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static int hf_isis_hello_adjacency_state = -1;
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static int hf_isis_hello_neighbor_systemid = -1;
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static int hf_isis_hello_digest = -1;
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static int hf_isis_hello_digest_v = -1;
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static int hf_isis_hello_digest_a = -1;
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static int hf_isis_hello_digest_d = -1;
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static int hf_isis_hello_ect = -1;
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static int hf_isis_hello_bvid = -1;
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static int hf_isis_hello_bvid_u = -1;
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static int hf_isis_hello_bvid_m = -1;
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static int hf_isis_hello_area_address = -1;
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static int hf_isis_hello_instance_identifier = -1;
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static int hf_isis_hello_supported_itid = -1;
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static int hf_isis_hello_clv_nlpid_nlpid = -1;
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static int hf_isis_hello_clv_ip_authentication = -1;
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static int hf_isis_hello_authentication = -1;
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static int hf_isis_hello_aux_mcid = -1;
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static int hf_isis_hello_mcid = -1;
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static int hf_isis_hello_is_neighbor = -1;
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static int hf_isis_hello_mtid = -1;
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static int hf_isis_hello_checksum = -1;
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static int hf_isis_hello_checksum_status = -1;
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static int hf_isis_hello_trill_neighbor_sf = -1;
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static int hf_isis_hello_trill_neighbor_lf = -1;
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static int hf_isis_hello_trill_neighbor_ff = -1;
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static int hf_isis_hello_trill_neighbor_of = -1;
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static int hf_isis_hello_trill_neighbor_size = -1;
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static int hf_isis_hello_trill_neighbor_reserved = -1;
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static int hf_isis_hello_trill_neighbor_mtu = -1;
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static int hf_isis_hello_trill_neighbor_snpa = -1;
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static int hf_isis_hello_reverse_metric_flags = -1;
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static int hf_isis_hello_reverse_metric_flag_reserved = -1;
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static int hf_isis_hello_reverse_metric_flag_u = -1;
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static int hf_isis_hello_reverse_metric_flag_w = -1;
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static int hf_isis_hello_reverse_metric_metric = -1;
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static int hf_isis_hello_reverse_metric_sub_length = -1;
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static int hf_isis_hello_reverse_metric_sub_data = -1;
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static int hf_isis_hello_bfd_enabled_nlpid = -1;
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static int hf_isis_hello_neighbor_extended_local_circuit_id = -1;
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static int hf_isis_hello_vlan_flags_port_id = -1;
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static int hf_isis_hello_vlan_flags_nickname = -1;
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static int hf_isis_hello_vlan_flags_af = -1;
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static int hf_isis_hello_vlan_flags_ac = -1;
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static int hf_isis_hello_vlan_flags_vm = -1;
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static int hf_isis_hello_vlan_flags_by = -1;
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static int hf_isis_hello_vlan_flags_outer_vlan = -1;
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static int hf_isis_hello_vlan_flags_tr = -1;
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static int hf_isis_hello_vlan_flags_reserved = -1;
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static int hf_isis_hello_vlan_flags_designated_vlan = -1;
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static int hf_isis_hello_enabled_vlans = -1;
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static int hf_isis_hello_appointed_vlans = -1;
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static int hf_isis_hello_af_nickname = -1;
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static int hf_isis_hello_af_start_vlan = -1;
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static int hf_isis_hello_af_end_vlan = -1;
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static int hf_isis_hello_trill_version = -1;
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static int hf_isis_hello_trill_hello_reduction = -1;
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static int hf_isis_hello_trill_unassigned_1 = -1;
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static int hf_isis_hello_trill_hop_by_hop_flags = -1;
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static int hf_isis_hello_trill_unassigned_2 = -1;
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static int hf_isis_hello_clv_ipv6_glb_int_addr = -1;
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static gint ett_isis_hello = -1;
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static gint ett_isis_hello_clv_area_addr = -1;
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static gint ett_isis_hello_clv_instance_identifier = -1;
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static gint ett_isis_hello_clv_is_neighbors = -1;
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static gint ett_isis_hello_clv_padding = -1;
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static gint ett_isis_hello_clv_unknown = -1;
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static gint ett_isis_hello_clv_nlpid = -1;
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static gint ett_isis_hello_clv_nlpid_nlpid = -1;
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static gint ett_isis_hello_clv_authentication = -1;
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static gint ett_isis_hello_clv_ip_authentication = -1;
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static gint ett_isis_hello_clv_ipv4_int_addr = -1;
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static gint ett_isis_hello_clv_ipv6_int_addr = -1;
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static gint ett_isis_hello_clv_ptp_adj = -1;
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static gint ett_isis_hello_clv_mt = -1;
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static gint ett_isis_hello_clv_restart = -1;
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static gint ett_isis_hello_clv_restart_flags = -1;
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static gint ett_isis_hello_clv_mt_port_cap = -1;
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static gint ett_isis_hello_clv_mt_port_cap_spb_mcid = -1;
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static gint ett_isis_hello_clv_mt_port_cap_spb_digest = -1;
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static gint ett_isis_hello_clv_mt_port_cap_spb_bvid_tuples = -1;
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static gint ett_isis_hello_clv_mt_port_cap_vlan_flags = -1;
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static gint ett_isis_hello_clv_mt_port_cap_enabled_vlans = -1;
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static gint ett_isis_hello_clv_mt_port_cap_appointedfwrdrs = -1;
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static gint ett_isis_hello_clv_mt_port_cap_port_trill_ver = -1;
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static gint ett_isis_hello_clv_mt_port_cap_vlans_appointed = -1;
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static gint ett_isis_hello_clv_trill_neighbor = -1;
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static gint ett_isis_hello_clv_checksum = -1;
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static gint ett_isis_hello_clv_reverse_metric = -1;
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static gint ett_isis_hello_clv_bfd_enabled = -1;
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static gint ett_isis_hello_clv_ipv6_glb_int_addr = -1;
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static gint ett_isis_hello_reverse_metric_flags = -1;
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static expert_field ei_isis_hello_short_pdu = EI_INIT;
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static expert_field ei_isis_hello_long_pdu = EI_INIT;
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static expert_field ei_isis_hello_bad_checksum = EI_INIT;
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static expert_field ei_isis_hello_authentication = EI_INIT;
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static expert_field ei_isis_hello_subtlv = EI_INIT;
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static expert_field ei_isis_hello_short_clv = EI_INIT;
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static expert_field ei_isis_hello_clv_mt = EI_INIT;
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static expert_field ei_isis_hello_clv_unknown = EI_INIT;
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static const value_string isis_hello_circuit_type_vals[] = {
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{ ISIS_HELLO_TYPE_RESERVED, "Reserved 0 (discard PDU)"},
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{ ISIS_HELLO_TYPE_LEVEL_1, "Level 1 only"},
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{ ISIS_HELLO_TYPE_LEVEL_2, "Level 2 only"},
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{ ISIS_HELLO_TYPE_LEVEL_12, "Level 1 and 2"},
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{ 0, NULL} };
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extern const range_string mtid_strings[];
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static void
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dissect_hello_mt_port_cap_spb_mcid_clv(tvbuff_t *tvb, packet_info* pinfo,
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proto_tree *tree, int offset, int subtype, int sublen)
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{
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const int MCID_LEN = 51;
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const int SUBLEN = 2 * MCID_LEN;
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proto_tree *subtree;
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if (sublen != SUBLEN) {
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proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_clv, tvb, offset, -1,
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"Short SPB MCID TLV (%d vs %d)", sublen, SUBLEN);
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return;
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}
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subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_spb_mcid, NULL,
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"SPB MCID: Type: 0x%02x, Length: %d", subtype, sublen);
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/* MCID: */
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proto_tree_add_item(subtree, hf_isis_hello_mcid, tvb, offset, MCID_LEN, ENC_NA);
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offset += MCID_LEN;
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/* Aux MCID: */
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proto_tree_add_item(subtree, hf_isis_hello_aux_mcid, tvb, offset, MCID_LEN, ENC_NA);
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/* offset += MCID_LEN; */
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}
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static void
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dissect_hello_mt_port_cap_spb_digest_clv(tvbuff_t *tvb, packet_info* pinfo,
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proto_tree *tree, int offset, int subtype, int sublen)
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{
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const int DIGEST_LEN = 32;
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const int SUBLEN = 1 + DIGEST_LEN;
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if (sublen != SUBLEN) {
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proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_clv, tvb, offset, -1,
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"Short SPB Digest TLV (%d vs %d)", sublen, SUBLEN);
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return;
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}
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else {
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proto_tree *subtree;
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subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_spb_digest, NULL,
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"SPB Digest: Type: 0x%02x, Length: %d", subtype, sublen);
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proto_tree_add_item( subtree, hf_isis_hello_digest_v, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item( subtree, hf_isis_hello_digest_a, tvb, offset, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item( subtree, hf_isis_hello_digest_d, tvb, offset, 1, ENC_BIG_ENDIAN);
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++offset;
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/* Digest: */
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proto_tree_add_item(subtree, hf_isis_hello_digest, tvb, offset, DIGEST_LEN, ENC_NA);
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/* offset += DIGEST_LEN; */
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}
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}
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static void
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dissect_hello_mt_port_cap_spb_bvid_tuples_clv(tvbuff_t *tvb, packet_info* pinfo,
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proto_tree *tree, int offset, int subtype, int sublen)
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{
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proto_tree *subtree;
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int subofs = offset;
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subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_spb_bvid_tuples, NULL,
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"SPB Base Vlan Identifiers: Type: 0x%02x, Length: %d", subtype, sublen);
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while (sublen > 0) {
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if (sublen < 6) {
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proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_clv, tvb, offset, -1,
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"Short SPB BVID header entry (%d vs %d)", sublen, 6);
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return;
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}
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else {
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proto_tree_add_item( subtree, hf_isis_hello_ect, tvb, subofs, 4, ENC_NA);
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proto_tree_add_item( subtree, hf_isis_hello_bvid, tvb, subofs+4, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item( subtree, hf_isis_hello_bvid_u, tvb, subofs+4, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item( subtree, hf_isis_hello_bvid_m, tvb, subofs+4, 2, ENC_BIG_ENDIAN);
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}
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sublen -= 6;
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subofs += 6;
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}
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}
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static void
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dissect_hello_mt_port_cap_vlan_flags_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
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proto_tree *tree, int offset, int subtype, int sublen)
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{
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proto_tree *subtree;
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subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_vlan_flags, NULL,
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"Special VLANs and Flags (t=%u, l=%u)", subtype, sublen);
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proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_port_id, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_nickname, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_af, tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_ac, tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_vm, tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_by, tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_outer_vlan, tvb, offset, 2, ENC_BIG_ENDIAN);
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offset += 2;
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proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_tr, tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_reserved, tvb, offset, 2, ENC_BIG_ENDIAN);
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proto_tree_add_item(subtree, hf_isis_hello_vlan_flags_designated_vlan, tvb, offset, 2, ENC_BIG_ENDIAN);
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}
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static void
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parse_vlan_bitmap(proto_item *item, tvbuff_t *tvb, guint vlan, int offset, int sublen)
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{
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gint range=0, next=0;
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guint8 mask, bitmap, i;
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while (sublen>0) {
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bitmap = tvb_get_guint8(tvb, offset);
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mask = 0x80;
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for (i=0; i<8; i++) {
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if (bitmap & mask) {
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if (range==0) {
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proto_item_append_text(item, "%s%u", next++ ? ", " : "", vlan);
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}
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range++;
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} else {
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if (range>1) {
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proto_item_append_text(item, "-%u", vlan-1);
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}
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range=0;
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}
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vlan++;
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mask>>=1;
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}
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offset++;
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sublen--;
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}
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if (range>1) {
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proto_item_append_text(item, "-%u", vlan-1);
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}
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}
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static void
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dissect_hello_mt_port_cap_enabled_vlans_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
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proto_tree *tree, int offset, int subtype, int sublen)
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{
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proto_tree *subtree;
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proto_item *item;
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guint vlan;
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subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_enabled_vlans, NULL,
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"Enabled-VLANs (t=%u, l=%u)", subtype, sublen);
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vlan = tvb_get_ntohs(tvb, offset) & 0xfff;
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offset+=2;
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sublen-=2;
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item = proto_tree_add_string(subtree, hf_isis_hello_enabled_vlans, tvb, offset, sublen, "");
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parse_vlan_bitmap(item, tvb, vlan, offset, sublen);
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}
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static void
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dissect_hello_mt_port_cap_appointedfwrdrs_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
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proto_tree *tree, int offset, int subtype, int sublen)
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{
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proto_tree *subtree;
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subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_appointedfwrdrs, NULL,
|
|
"Appointed Forwarders (t=%u, l=%u)", subtype, sublen);
|
|
|
|
while (sublen>=6) {
|
|
proto_tree_add_item(subtree, hf_isis_hello_af_nickname, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(subtree, hf_isis_hello_af_start_vlan, tvb, offset+2, 2, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(subtree, hf_isis_hello_af_end_vlan, tvb, offset+4, 2, ENC_BIG_ENDIAN);
|
|
|
|
offset += 6;
|
|
sublen -=6;
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_hello_mt_port_cap_port_trill_ver_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
|
|
proto_tree *tree, int offset, int subtype, int sublen)
|
|
{
|
|
proto_tree *subtree;
|
|
|
|
subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_port_trill_ver, NULL,
|
|
"Port TRILL Version (t=%u, l=%u)", subtype, sublen);
|
|
|
|
proto_tree_add_item(subtree, hf_isis_hello_trill_version, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
|
|
offset++;
|
|
|
|
proto_tree_add_item(subtree, hf_isis_hello_trill_hello_reduction, tvb, offset, 4, ENC_NA);
|
|
proto_tree_add_item(subtree, hf_isis_hello_trill_unassigned_1, tvb, offset, 4, ENC_NA);
|
|
proto_tree_add_item(subtree, hf_isis_hello_trill_hop_by_hop_flags, tvb, offset, 4, ENC_NA);
|
|
proto_tree_add_item(subtree, hf_isis_hello_trill_unassigned_2, tvb, offset, 4, ENC_NA);
|
|
}
|
|
|
|
static void
|
|
dissect_hello_mt_port_cap_vlans_appointed_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
|
|
proto_tree *tree, int offset, int subtype, int sublen)
|
|
{
|
|
proto_tree *subtree;
|
|
proto_item *item;
|
|
guint vlan;
|
|
|
|
subtree = proto_tree_add_subtree_format( tree, tvb, offset-2, sublen+2, ett_isis_hello_clv_mt_port_cap_vlans_appointed, NULL,
|
|
"Appointed VLANs (t=%u, l=%u)", subtype, sublen);
|
|
|
|
vlan = tvb_get_ntohs(tvb, offset) & 0xfff;
|
|
offset+=2;
|
|
sublen-=2;
|
|
|
|
item = proto_tree_add_string(subtree, hf_isis_hello_appointed_vlans, tvb, offset, sublen, "");
|
|
|
|
parse_vlan_bitmap(item, tvb, vlan, offset, sublen);
|
|
}
|
|
|
|
static void
|
|
dissect_hello_mt_port_cap_clv(tvbuff_t *tvb, packet_info* pinfo,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length)
|
|
{
|
|
if (length >= 2) {
|
|
/* mtid */
|
|
proto_tree_add_item(tree, hf_isis_hello_mtid, 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_hello_short_clv, tvb, offset, -1,
|
|
"Short type %d TLV (%d vs %d)", subtype, subtlvlen, length);
|
|
return;
|
|
}
|
|
switch(subtype)
|
|
{
|
|
case 1: /* TRILL Special VLANs and Flags */
|
|
dissect_hello_mt_port_cap_vlan_flags_clv(tvb, pinfo, tree, offset, subtype, subtlvlen);
|
|
break;
|
|
case 2: /* TRILL Enabled VLANs */
|
|
dissect_hello_mt_port_cap_enabled_vlans_clv(tvb, pinfo, tree, offset, subtype, subtlvlen);
|
|
break;
|
|
case 3: /* TRILL Appointed Forwarders */
|
|
dissect_hello_mt_port_cap_appointedfwrdrs_clv(tvb, pinfo, tree, offset, subtype, subtlvlen);
|
|
break;
|
|
case 4: /* SPB MCID */
|
|
dissect_hello_mt_port_cap_spb_mcid_clv(tvb, pinfo, tree, offset, subtype, subtlvlen);
|
|
break;
|
|
case 5: /* SPB Digest */
|
|
dissect_hello_mt_port_cap_spb_digest_clv(tvb, pinfo, tree, offset, subtype, subtlvlen);
|
|
break;
|
|
case 6: /* SPB BVID Tuples */
|
|
dissect_hello_mt_port_cap_spb_bvid_tuples_clv(tvb, pinfo, tree, offset, subtype, subtlvlen);
|
|
break;
|
|
case 7: /* Port TRILL Version */
|
|
dissect_hello_mt_port_cap_port_trill_ver_clv(tvb, pinfo, tree, offset, subtype, subtlvlen);
|
|
break;
|
|
case 8: /* TRILL VLANs Appointed */
|
|
dissect_hello_mt_port_cap_vlans_appointed_clv(tvb, pinfo, tree, offset, subtype, subtlvlen);
|
|
break;
|
|
default:
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_subtlv, tvb, offset-2, subtlvlen+2,
|
|
"Unknown Sub-TLV: Type: %d, Length: %d", subtype, subtlvlen );
|
|
}
|
|
length -= subtlvlen;
|
|
offset += subtlvlen;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The Restart CLV is documented in RFC 3847 (Restart Signaling for
|
|
* Intermediate System to Intermediate System). The CLV looks like this
|
|
*
|
|
* Type 211
|
|
* Length # of octets in the value field (1 to (3 + ID Length))
|
|
* Value
|
|
*
|
|
* No. of octets
|
|
* +-----------------------+
|
|
* | Flags | 1
|
|
* +-----------------------+
|
|
* | Remaining Time | 2
|
|
* +-----------------------+
|
|
* | Restarting Neighbor ID| ID Length
|
|
* +-----------------------+
|
|
*
|
|
* Flags (1 octet)
|
|
*
|
|
* 0 1 2 3 4 5 6 7
|
|
* +--+--+--+--+--+--+--+--+
|
|
* | Reserved |SA|RA|RR|
|
|
* +--+--+--+--+--+--+--+--+
|
|
*
|
|
* RR - Restart Request
|
|
* RA - Restart Acknowledgement
|
|
* SA - Suppress adjacency advertisement
|
|
*
|
|
* The Remaining Time and Restarting Neighbor ID fields are only required when
|
|
* the RA flag is set. The Flags field is always required.
|
|
*
|
|
*/
|
|
/*
|
|
* Name: dissect_hello_restart_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a restart clv - only found in IIHs
|
|
* hence no call in the common clv dissector
|
|
*
|
|
*/
|
|
|
|
static void
|
|
dissect_hello_restart_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
|
|
proto_tree *tree, int offset, isis_data_t *isis, int length)
|
|
{
|
|
int restart_options=0;
|
|
proto_item *hold_time_item;
|
|
|
|
if (length >= 1) {
|
|
static int * const flags[] = {
|
|
&hf_isis_hello_clv_restart_flags_sa,
|
|
&hf_isis_hello_clv_restart_flags_ra,
|
|
&hf_isis_hello_clv_restart_flags_rr,
|
|
NULL
|
|
};
|
|
|
|
restart_options = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_bitmask_with_flags(tree, tvb, offset, hf_isis_hello_clv_restart_flags, ett_isis_hello_clv_restart_flags, flags, ENC_NA, BMT_NO_FALSE|BMT_NO_TFS);
|
|
}
|
|
|
|
/* The Remaining Time field should only be present if the RA flag is
|
|
* set
|
|
*/
|
|
if (length >= 3 && ISIS_MASK_RESTART_RA(restart_options)) {
|
|
hold_time_item = proto_tree_add_item( tree, hf_isis_hello_clv_restart_remain_time,
|
|
tvb, offset+1, 2, ENC_BIG_ENDIAN );
|
|
proto_item_append_text( hold_time_item, "s" );
|
|
}
|
|
|
|
/* The Restarting Neighbor ID should only be present if the RA flag is
|
|
* set.
|
|
*/
|
|
if (length >= 3 + isis->system_id_len && ISIS_MASK_RESTART_RA(restart_options)) {
|
|
proto_tree_add_item( tree, hf_isis_hello_clv_restart_neighbor, tvb, offset+3, isis->system_id_len, ENC_NA);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_nlpid_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello 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_hello_nlpid_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length)
|
|
{
|
|
isis_dissect_nlpid_clv(tvb, tree, ett_isis_hello_clv_nlpid_nlpid, hf_isis_hello_clv_nlpid_nlpid, offset, length);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_mt_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello 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
|
|
* int : length of IDs in packet.
|
|
* int : length of this clv
|
|
*
|
|
* Output:
|
|
* void, will modify proto_tree if not null.
|
|
*/
|
|
|
|
static void
|
|
dissect_hello_mt_clv(tvbuff_t *tvb, packet_info* pinfo,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length)
|
|
{
|
|
isis_dissect_mt_clv(tvb, pinfo, tree, offset, length,
|
|
hf_isis_hello_clv_mt, &ei_isis_hello_clv_mt);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_ip_int_addr_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello 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_hello_ip_int_addr_clv(tvbuff_t *tvb, packet_info* pinfo,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length)
|
|
{
|
|
isis_dissect_ip_int_clv(tree, pinfo, tvb, &ei_isis_hello_short_clv,
|
|
offset, length, hf_isis_hello_clv_ipv4_int_addr );
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_ipv6_int_addr_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello packets ipv6 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_hello_ipv6_int_addr_clv(tvbuff_t *tvb, packet_info* pinfo,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length)
|
|
{
|
|
isis_dissect_ipv6_int_clv(tree, pinfo, tvb, &ei_isis_hello_short_clv,
|
|
offset, length, hf_isis_hello_clv_ipv6_int_addr );
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_authentication_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello packets authentication 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_hello_authentication_clv(tvbuff_t *tvb, packet_info* pinfo,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length)
|
|
{
|
|
isis_dissect_authentication_clv(tree, pinfo, tvb, hf_isis_hello_authentication, hf_isis_clv_key_id, &ei_isis_hello_authentication, offset, length);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_ip_authentication_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello packets IP authentication 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_hello_ip_authentication_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length)
|
|
{
|
|
if ( length != 0 ) {
|
|
proto_tree_add_item( tree, hf_isis_hello_clv_ip_authentication, tvb, offset, length, ENC_ASCII);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_trill_neighbor_clv
|
|
*/
|
|
static void
|
|
dissect_hello_trill_neighbor_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length) {
|
|
|
|
guint8 size = (tvb_get_guint8(tvb, offset)) & 0x1f;
|
|
|
|
if(size==0)
|
|
size=6;
|
|
|
|
proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_sf, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_lf, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_size, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
|
|
offset++;
|
|
length--;
|
|
|
|
while(length>=(size+3)) {
|
|
proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_ff, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_of, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
|
|
offset++;
|
|
length--;
|
|
|
|
proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_mtu, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
|
|
offset += 2;
|
|
length -= 2;
|
|
|
|
proto_tree_add_item(tree, hf_isis_hello_trill_neighbor_snpa, tvb, offset, 6, ENC_NA);
|
|
|
|
offset += 6;
|
|
length -= 6;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_reverse_metric_clv
|
|
*/
|
|
static void
|
|
dissect_hello_reverse_metric_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length _U_) {
|
|
|
|
guint32 sub_length;
|
|
|
|
static int * const flags[] = {
|
|
&hf_isis_hello_reverse_metric_flag_reserved,
|
|
&hf_isis_hello_reverse_metric_flag_u,
|
|
&hf_isis_hello_reverse_metric_flag_w,
|
|
NULL
|
|
};
|
|
|
|
proto_tree_add_bitmask(tree, tvb, offset, hf_isis_hello_reverse_metric_flags, ett_isis_hello_reverse_metric_flags, flags, ENC_NA);
|
|
offset += 1;
|
|
proto_tree_add_item(tree, hf_isis_hello_reverse_metric_metric, tvb, offset, 3, ENC_BIG_ENDIAN);
|
|
offset += 3;
|
|
proto_tree_add_item_ret_uint(tree, hf_isis_hello_reverse_metric_sub_length, tvb, offset, 1, ENC_BIG_ENDIAN, &sub_length);
|
|
offset += 1;
|
|
if (sub_length > 0) {
|
|
proto_tree_add_item(tree, hf_isis_hello_reverse_metric_sub_data, tvb, offset, sub_length, ENC_NA);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_bfd_enabled_clv
|
|
*
|
|
* Description:
|
|
* Decode for a hello packets BFD enabled clv.
|
|
*
|
|
* 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_hello_bfd_enabled_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length) {
|
|
|
|
while (length >= 3) {
|
|
/* mtid */
|
|
proto_tree_add_item(tree, hf_isis_hello_mtid, tvb, offset, 2, ENC_BIG_ENDIAN);
|
|
length -= 2;
|
|
offset += 2;
|
|
/* nlpid */
|
|
proto_tree_add_item(tree, hf_isis_hello_bfd_enabled_nlpid, tvb, offset, 1, ENC_NA);
|
|
length -= 1;
|
|
offset += 1;
|
|
};
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_checksum_clv()
|
|
*
|
|
* Description:
|
|
* dump and verify the optional checksum in TLV 12
|
|
*
|
|
* 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 clv we are decoding
|
|
*
|
|
* Output:
|
|
* void, but we will add to proto tree if !NULL.
|
|
*/
|
|
|
|
static void
|
|
dissect_hello_checksum_clv(tvbuff_t *tvb, packet_info* pinfo,
|
|
proto_tree *tree, int offset, isis_data_t *isis, int length) {
|
|
|
|
guint16 checksum, cacl_checksum=0;
|
|
|
|
if ( length != 2 ) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_clv, tvb, offset, length,
|
|
"incorrect checksum length (%u), should be (2)", length );
|
|
return;
|
|
}
|
|
|
|
checksum = tvb_get_ntohs(tvb, offset);
|
|
|
|
if (checksum == 0) {
|
|
/* No checksum present */
|
|
proto_tree_add_checksum(tree, tvb, offset, hf_isis_hello_checksum, hf_isis_hello_checksum_status, &ei_isis_hello_bad_checksum, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NOT_PRESENT);
|
|
} else {
|
|
if (osi_check_and_get_checksum(tvb, 0, isis->pdu_length, offset, &cacl_checksum)) {
|
|
/* Successfully processed checksum, verify it */
|
|
proto_tree_add_checksum(tree, tvb, offset, hf_isis_hello_checksum, hf_isis_hello_checksum_status, &ei_isis_hello_bad_checksum, pinfo, cacl_checksum, ENC_BIG_ENDIAN, PROTO_CHECKSUM_VERIFY);
|
|
} else {
|
|
/* We didn't capture the entire packet, so we can't verify it */
|
|
proto_tree_add_checksum(tree, tvb, offset, hf_isis_hello_checksum, hf_isis_hello_checksum_status, &ei_isis_hello_bad_checksum, pinfo, 0, ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS);
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* Name: dissect_hello_area_address_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello packets area address 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_hello_area_address_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length)
|
|
{
|
|
isis_dissect_area_address_clv(tree, pinfo, tvb, &ei_isis_hello_short_clv, hf_isis_hello_area_address, offset, length);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_instance_identifier_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello packets Instance Identifier 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_hello_instance_identifier_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length)
|
|
{
|
|
isis_dissect_instance_identifier_clv(tree, pinfo, tvb, &ei_isis_hello_short_clv, hf_isis_hello_instance_identifier, hf_isis_hello_supported_itid, offset, length);
|
|
}
|
|
|
|
static const value_string adj_state_vals[] = {
|
|
{ 0, "Up" },
|
|
{ 1, "Initializing" },
|
|
{ 2, "Down" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static void
|
|
dissect_hello_ptp_adj_clv(tvbuff_t *tvb, packet_info* pinfo,
|
|
proto_tree *tree, int offset, isis_data_t *isis, int length)
|
|
{
|
|
switch(length)
|
|
{
|
|
case 1:
|
|
proto_tree_add_item(tree, hf_isis_hello_adjacency_state, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
break;
|
|
case 5:
|
|
proto_tree_add_item(tree, hf_isis_hello_adjacency_state, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_isis_hello_extended_local_circuit_id, tvb, offset+1, 4, ENC_BIG_ENDIAN);
|
|
break;
|
|
case 11:
|
|
proto_tree_add_item(tree, hf_isis_hello_adjacency_state, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_isis_hello_extended_local_circuit_id, tvb, offset+1, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_isis_hello_neighbor_systemid, tvb, offset+5, isis->system_id_len, ENC_NA);
|
|
break;
|
|
case 15:
|
|
proto_tree_add_item(tree, hf_isis_hello_adjacency_state, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_isis_hello_extended_local_circuit_id, tvb, offset+1, 4, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(tree, hf_isis_hello_neighbor_systemid, tvb, offset+5, isis->system_id_len, ENC_NA);
|
|
proto_tree_add_item(tree, hf_isis_hello_neighbor_extended_local_circuit_id, tvb, offset+5+isis->system_id_len, 4, ENC_BIG_ENDIAN);
|
|
break;
|
|
default:
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_clv, tvb, offset, -1,
|
|
"malformed TLV (%d vs 1,5,11,15)", length );
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: isis_dissect_is_neighbors_clv()
|
|
*
|
|
* Description:
|
|
* Take apart a IS neighbor packet. A neighbor is n 6 byte packets.
|
|
* (they tend to be an 802.3 MAC address, but it's not required).
|
|
*
|
|
* 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_hello_is_neighbors_clv(tvbuff_t *tvb, packet_info* pinfo, proto_tree *tree, int offset,
|
|
isis_data_t *isis _U_, int length)
|
|
{
|
|
while ( length > 0 ) {
|
|
if (length<6) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_clv, tvb, offset, -1,
|
|
"short is neighbor (%d vs 6)", length );
|
|
return;
|
|
}
|
|
/*
|
|
* Lets turn the area address into "standard" 0000.0000.etc
|
|
* format string.
|
|
*/
|
|
proto_tree_add_item(tree, hf_isis_hello_is_neighbor, tvb, offset, 6, ENC_NA);
|
|
offset += 6;
|
|
length -= 6;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_padding_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello packet's padding clv. Padding does nothing,
|
|
* so we just return.
|
|
*
|
|
* 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
|
|
*/
|
|
static void
|
|
dissect_hello_padding_clv(tvbuff_t *tvb _U_, packet_info* pinfo _U_, proto_tree *tree _U_, int offset _U_,
|
|
isis_data_t *isis _U_, int length _U_)
|
|
{
|
|
/* nothing to do here! */
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_ipv6_glb_int_addr_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello packets ipv6 gobal interface addr clv. Calls into the
|
|
* clv 233.
|
|
*
|
|
* 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_hello_ipv6_glb_int_addr_clv(tvbuff_t *tvb, packet_info* pinfo,
|
|
proto_tree *tree, int offset, isis_data_t *isis _U_, int length)
|
|
{
|
|
isis_dissect_ipv6_int_clv(tree, pinfo, tvb, &ei_isis_hello_short_clv,
|
|
offset, length, hf_isis_hello_clv_ipv6_glb_int_addr );
|
|
}
|
|
static const isis_clv_handle_t clv_l1_hello_opts[] = {
|
|
{
|
|
ISIS_CLV_AREA_ADDRESS,
|
|
"Area address(es)",
|
|
&ett_isis_hello_clv_area_addr,
|
|
dissect_hello_area_address_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IS_NEIGHBORS,
|
|
"IS Neighbor(s)",
|
|
&ett_isis_hello_clv_is_neighbors,
|
|
dissect_hello_is_neighbors_clv
|
|
},
|
|
{
|
|
ISIS_CLV_INSTANCE_IDENTIFIER,
|
|
"Instance Identifier",
|
|
&ett_isis_hello_clv_instance_identifier,
|
|
dissect_hello_instance_identifier_clv
|
|
},
|
|
{
|
|
ISIS_CLV_PADDING,
|
|
"Padding",
|
|
&ett_isis_hello_clv_padding,
|
|
dissect_hello_padding_clv
|
|
},
|
|
{
|
|
ISIS_CLV_PROTOCOLS_SUPPORTED,
|
|
"Protocols Supported",
|
|
&ett_isis_hello_clv_nlpid,
|
|
dissect_hello_nlpid_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP_ADDR,
|
|
"IP Interface address(es)",
|
|
&ett_isis_hello_clv_ipv4_int_addr,
|
|
dissect_hello_ip_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP6_ADDR,
|
|
"IPv6 Interface address(es)",
|
|
&ett_isis_hello_clv_ipv6_int_addr,
|
|
dissect_hello_ipv6_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_RESTART,
|
|
"Restart Signaling",
|
|
&ett_isis_hello_clv_restart,
|
|
dissect_hello_restart_clv
|
|
},
|
|
{
|
|
ISIS_CLV_AUTHENTICATION,
|
|
"Authentication",
|
|
&ett_isis_hello_clv_authentication,
|
|
dissect_hello_authentication_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP_AUTHENTICATION,
|
|
"IP Authentication",
|
|
&ett_isis_hello_clv_ip_authentication,
|
|
dissect_hello_ip_authentication_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_PORT_CAP,
|
|
"MT Port Capability",
|
|
&ett_isis_hello_clv_mt_port_cap,
|
|
dissect_hello_mt_port_cap_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_SUPPORTED,
|
|
"Multi Topology",
|
|
&ett_isis_hello_clv_mt,
|
|
dissect_hello_mt_clv
|
|
},
|
|
{
|
|
ISIS_CLV_TRILL_NEIGHBOR,
|
|
"TRILL Neighbor",
|
|
&ett_isis_hello_clv_trill_neighbor,
|
|
dissect_hello_trill_neighbor_clv
|
|
},
|
|
{
|
|
ISIS_CLV_CHECKSUM,
|
|
"Checksum",
|
|
&ett_isis_hello_clv_checksum,
|
|
dissect_hello_checksum_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IPV6_GBL_INT_ADDR,
|
|
"IPv6 Global Interface Address",
|
|
&ett_isis_hello_clv_ipv6_glb_int_addr,
|
|
dissect_hello_ipv6_glb_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_REVERSE_METRIC,
|
|
"Reverse Metric",
|
|
&ett_isis_hello_clv_reverse_metric,
|
|
dissect_hello_reverse_metric_clv
|
|
},
|
|
{
|
|
ISIS_CLV_BFD_ENABLED,
|
|
"BFD Enabled",
|
|
&ett_isis_hello_clv_bfd_enabled,
|
|
dissect_hello_bfd_enabled_clv
|
|
},
|
|
{
|
|
0,
|
|
"",
|
|
NULL,
|
|
NULL
|
|
}
|
|
};
|
|
|
|
static const isis_clv_handle_t clv_l2_hello_opts[] = {
|
|
{
|
|
ISIS_CLV_AREA_ADDRESS,
|
|
"Area address(es)",
|
|
&ett_isis_hello_clv_area_addr,
|
|
dissect_hello_area_address_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IS_NEIGHBORS,
|
|
"IS Neighbor(s)",
|
|
&ett_isis_hello_clv_is_neighbors,
|
|
dissect_hello_is_neighbors_clv
|
|
},
|
|
{
|
|
ISIS_CLV_INSTANCE_IDENTIFIER,
|
|
"Instance Identifier",
|
|
&ett_isis_hello_clv_instance_identifier,
|
|
dissect_hello_instance_identifier_clv
|
|
},
|
|
{
|
|
ISIS_CLV_PADDING,
|
|
"Padding",
|
|
&ett_isis_hello_clv_padding,
|
|
dissect_hello_padding_clv
|
|
},
|
|
{
|
|
ISIS_CLV_PROTOCOLS_SUPPORTED,
|
|
"Protocols Supported",
|
|
&ett_isis_hello_clv_nlpid,
|
|
dissect_hello_nlpid_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP_ADDR,
|
|
"IP Interface address(es)",
|
|
&ett_isis_hello_clv_ipv4_int_addr,
|
|
dissect_hello_ip_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP6_ADDR,
|
|
"IPv6 Interface address(es)",
|
|
&ett_isis_hello_clv_ipv6_int_addr,
|
|
dissect_hello_ipv6_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_AUTHENTICATION,
|
|
"Authentication",
|
|
&ett_isis_hello_clv_authentication,
|
|
dissect_hello_authentication_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP_AUTHENTICATION,
|
|
"IP Authentication",
|
|
&ett_isis_hello_clv_ip_authentication,
|
|
dissect_hello_ip_authentication_clv
|
|
},
|
|
{
|
|
ISIS_CLV_RESTART,
|
|
"Restart Signaling",
|
|
&ett_isis_hello_clv_restart,
|
|
dissect_hello_restart_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_SUPPORTED,
|
|
"Multi Topology",
|
|
&ett_isis_hello_clv_mt,
|
|
dissect_hello_mt_clv
|
|
},
|
|
{
|
|
ISIS_CLV_CHECKSUM,
|
|
"Checksum",
|
|
&ett_isis_hello_clv_checksum,
|
|
dissect_hello_checksum_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IPV6_GBL_INT_ADDR,
|
|
"IPv6 Global Interface Address",
|
|
&ett_isis_hello_clv_ipv6_glb_int_addr,
|
|
dissect_hello_ipv6_glb_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_BFD_ENABLED,
|
|
"BFD Enabled",
|
|
&ett_isis_hello_clv_bfd_enabled,
|
|
dissect_hello_bfd_enabled_clv
|
|
},
|
|
{
|
|
0,
|
|
"",
|
|
NULL,
|
|
NULL
|
|
}
|
|
};
|
|
|
|
static const isis_clv_handle_t clv_ptp_hello_opts[] = {
|
|
{
|
|
ISIS_CLV_AREA_ADDRESS,
|
|
"Area address(es)",
|
|
&ett_isis_hello_clv_area_addr,
|
|
dissect_hello_area_address_clv
|
|
},
|
|
{
|
|
ISIS_CLV_INSTANCE_IDENTIFIER,
|
|
"Instance Identifier",
|
|
&ett_isis_hello_clv_instance_identifier,
|
|
dissect_hello_instance_identifier_clv
|
|
},
|
|
{
|
|
ISIS_CLV_PADDING,
|
|
"Padding",
|
|
&ett_isis_hello_clv_padding,
|
|
dissect_hello_padding_clv
|
|
},
|
|
{
|
|
ISIS_CLV_PROTOCOLS_SUPPORTED,
|
|
"Protocols Supported",
|
|
&ett_isis_hello_clv_nlpid,
|
|
dissect_hello_nlpid_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP_ADDR,
|
|
"IP Interface address(es)",
|
|
&ett_isis_hello_clv_ipv4_int_addr,
|
|
dissect_hello_ip_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP6_ADDR,
|
|
"IPv6 Interface address(es)",
|
|
&ett_isis_hello_clv_ipv6_int_addr,
|
|
dissect_hello_ipv6_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_AUTHENTICATION,
|
|
"Authentication",
|
|
&ett_isis_hello_clv_authentication,
|
|
dissect_hello_authentication_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IP_AUTHENTICATION,
|
|
"IP Authentication",
|
|
&ett_isis_hello_clv_ip_authentication,
|
|
dissect_hello_ip_authentication_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_PORT_CAP,
|
|
"MT Port Capability",
|
|
&ett_isis_hello_clv_mt_port_cap,
|
|
dissect_hello_mt_port_cap_clv
|
|
},
|
|
{
|
|
ISIS_CLV_RESTART,
|
|
"Restart Signaling",
|
|
&ett_isis_hello_clv_restart,
|
|
dissect_hello_restart_clv
|
|
},
|
|
{
|
|
ISIS_CLV_PTP_ADJ_STATE,
|
|
"Point-to-point Adjacency State",
|
|
&ett_isis_hello_clv_ptp_adj,
|
|
dissect_hello_ptp_adj_clv
|
|
},
|
|
{
|
|
ISIS_CLV_MT_SUPPORTED,
|
|
"Multi Topology",
|
|
&ett_isis_hello_clv_mt,
|
|
dissect_hello_mt_clv
|
|
},
|
|
{
|
|
ISIS_CLV_CHECKSUM,
|
|
"Checksum",
|
|
&ett_isis_hello_clv_checksum,
|
|
dissect_hello_checksum_clv
|
|
},
|
|
{
|
|
ISIS_CLV_IPV6_GBL_INT_ADDR,
|
|
"IPv6 Global Interface Address",
|
|
&ett_isis_hello_clv_ipv6_glb_int_addr,
|
|
dissect_hello_ipv6_glb_int_addr_clv
|
|
},
|
|
{
|
|
ISIS_CLV_BFD_ENABLED,
|
|
"BFD Enabled",
|
|
&ett_isis_hello_clv_bfd_enabled,
|
|
dissect_hello_bfd_enabled_clv
|
|
},
|
|
{
|
|
0,
|
|
"",
|
|
NULL,
|
|
NULL
|
|
}
|
|
};
|
|
|
|
/*
|
|
* Name: isis_dissect_isis_hello()
|
|
*
|
|
* Description:
|
|
* This procedure rips apart the various types of ISIS hellos. L1H and
|
|
* L2H's are identical for the most part, while the PTP hello has
|
|
* a shorter header.
|
|
*/
|
|
static void
|
|
dissect_isis_hello(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset,
|
|
const isis_clv_handle_t *opts, isis_data_t *isis)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *hello_tree;
|
|
guint16 pdu_length;
|
|
gboolean pdu_length_too_short = FALSE;
|
|
|
|
/*
|
|
* We are passed a tvbuff for the entire ISIS PDU, because some ISIS
|
|
* PDUs may contain a checksum CLV, and that's a checksum covering
|
|
* the entire PDU. Skip the part of the header that's already been
|
|
* dissected.
|
|
*/
|
|
offset += 8;
|
|
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "ISIS HELLO");
|
|
|
|
ti = proto_tree_add_item(tree, proto_isis_hello, tvb, offset, -1, ENC_NA);
|
|
hello_tree = proto_item_add_subtree(ti, ett_isis_hello);
|
|
|
|
if (isis->header_length < 8 + 1) {
|
|
/* Not large enough to include the part of the header that
|
|
we dissect here. */
|
|
expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length);
|
|
return;
|
|
}
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_circuit, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_circuit_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset += 1;
|
|
|
|
if (isis->header_length < 8 + 1 + isis->system_id_len) {
|
|
/* Not large enough to include the part of the header that
|
|
we dissect here. */
|
|
expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length);
|
|
return;
|
|
}
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_source_id, tvb, offset, isis->system_id_len, ENC_NA);
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, ", System-ID: %s", tvb_print_system_id( pinfo->pool, tvb, offset, isis->system_id_len ));
|
|
offset += isis->system_id_len;
|
|
|
|
if (isis->header_length < 8 + 1 + isis->system_id_len + 2) {
|
|
/* Not large enough to include the part of the header that
|
|
we dissect here. */
|
|
expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length);
|
|
return;
|
|
}
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_holding_timer, tvb,
|
|
offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
if (isis->header_length < 8 + 1 + isis->system_id_len + 2 + 2) {
|
|
/* Not large enough to include the part of the header that
|
|
we dissect here. */
|
|
expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length);
|
|
return;
|
|
}
|
|
pdu_length = tvb_get_ntohs(tvb, offset);
|
|
ti = proto_tree_add_uint(hello_tree, hf_isis_hello_pdu_length, tvb,
|
|
offset, 2, pdu_length);
|
|
if (pdu_length < isis->header_length) {
|
|
expert_add_info(pinfo, ti, &ei_isis_hello_short_pdu);
|
|
pdu_length_too_short = TRUE;
|
|
} else if (pdu_length > tvb_reported_length(tvb) + isis->header_length) {
|
|
expert_add_info(pinfo, ti, &ei_isis_hello_long_pdu);
|
|
}
|
|
offset += 2;
|
|
|
|
if (opts == clv_ptp_hello_opts) {
|
|
if (isis->header_length < 8 + 1 + isis->system_id_len + 2 + 2 + 1) {
|
|
/* Not large enough to include the part of the header that
|
|
we dissect here. */
|
|
expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length);
|
|
return;
|
|
}
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_local_circuit_id, tvb,
|
|
offset, 1, ENC_BIG_ENDIAN );
|
|
offset += 1;
|
|
} else {
|
|
if (isis->header_length < 8 + 1 + isis->system_id_len + 2 + 2 + 1) {
|
|
/* Not large enough to include the part of the header that
|
|
we dissect here. */
|
|
expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length);
|
|
return;
|
|
}
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_priority, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_priority_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
|
|
offset += 1;
|
|
|
|
if (isis->header_length < 8 + 1 + isis->system_id_len + 2 + 2 + 1 + isis->system_id_len + 1) {
|
|
/* Not large enough to include the part of the header that
|
|
we dissect here. */
|
|
expert_add_info(pinfo, isis->header_length_item, isis->ei_bad_header_length);
|
|
return;
|
|
}
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_lan_id, tvb, offset, isis->system_id_len + 1, ENC_NA);
|
|
offset += isis->system_id_len + 1;
|
|
}
|
|
|
|
if (pdu_length_too_short) {
|
|
return;
|
|
}
|
|
/*
|
|
* Now, we need to decode our CLVs. We need to pass in
|
|
* our list of valid ones!
|
|
*/
|
|
isis->pdu_length = pdu_length;
|
|
isis_dissect_clvs(tvb, pinfo, hello_tree, offset,
|
|
opts, &ei_isis_hello_short_clv, isis, ett_isis_hello_clv_unknown,
|
|
hf_isis_hello_clv_type, hf_isis_hello_clv_length,
|
|
&ei_isis_hello_clv_unknown);
|
|
}
|
|
|
|
|
|
static int
|
|
dissect_isis_l1_hello(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
|
|
{
|
|
isis_data_t* isis = (isis_data_t*)data;
|
|
dissect_isis_hello(tvb, pinfo, tree, 0, clv_l1_hello_opts, isis);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_isis_l2_hello(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
|
|
{
|
|
isis_data_t* isis = (isis_data_t*)data;
|
|
dissect_isis_hello(tvb, pinfo, tree, 0, clv_l2_hello_opts, isis);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
static int
|
|
dissect_isis_ptp_hello(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data)
|
|
{
|
|
isis_data_t* isis = (isis_data_t*)data;
|
|
dissect_isis_hello(tvb, pinfo, tree, 0, clv_ptp_hello_opts, isis);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
/*
|
|
* Name: isis_register_hello()
|
|
*
|
|
* Description:
|
|
* Register our protocol sub-sets with protocol manager.
|
|
*
|
|
* Input:
|
|
* int : protocol index for the ISIS protocol
|
|
*
|
|
* Output:
|
|
* void
|
|
*/
|
|
void
|
|
proto_register_isis_hello(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_isis_hello_circuit,
|
|
{ "Circuit type", "isis.hello.circuit_type",
|
|
FT_UINT8, BASE_HEX, VALS(isis_hello_circuit_type_vals), ISIS_HELLO_CTYPE_MASK, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_circuit_reserved,
|
|
{ "Reserved", "isis.hello.reserved",
|
|
FT_UINT8, BASE_HEX, NULL, ISIS_HELLO_CT_RESERVED_MASK, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_source_id,
|
|
{ "SystemID {Sender of PDU}", "isis.hello.source_id",
|
|
FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_holding_timer,
|
|
{ "Holding timer", "isis.hello.holding_timer",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_pdu_length,
|
|
{ "PDU length", "isis.hello.pdu_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_priority,
|
|
{ "Priority", "isis.hello.priority",
|
|
FT_UINT8, BASE_DEC, NULL, ISIS_HELLO_PRIORITY_MASK, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_priority_reserved,
|
|
{ "Reserved", "isis.hello.reserved",
|
|
FT_UINT8, BASE_DEC, NULL, ISIS_HELLO_P_RESERVED_MASK, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_lan_id,
|
|
{ "SystemID {Designated IS}", "isis.hello.lan_id",
|
|
FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_clv_type,
|
|
{ "Type", "isis.hello.clv.type",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_clv_length,
|
|
{ "Length", "isis.hello.clv.length",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_local_circuit_id,
|
|
{ "Local circuit ID", "isis.hello.local_circuit_id",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_clv_ipv4_int_addr,
|
|
{ "IPv4 interface address", "isis.hello.clv_ipv4_int_addr",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_clv_ipv6_int_addr,
|
|
{ "IPv6 interface address", "isis.hello.clv_ipv6_int_addr",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
|
|
#if 0
|
|
{ &hf_isis_hello_clv_ptp_adj,
|
|
{ "Point-to-point Adjacency", "isis.hello.clv_ptp_adj",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
#endif
|
|
|
|
{ &hf_isis_hello_clv_mt,
|
|
{ "MT-ID", "isis.hello.clv_mt",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_clv_restart_flags,
|
|
{ "Restart Signaling Flags", "isis.hello.clv_restart_flags",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
|
|
{ &hf_isis_hello_clv_restart_flags_rr,
|
|
{ "Restart Request", "isis.hello.clv_restart_flags.rr",
|
|
FT_BOOLEAN, 8, TFS(&tfs_true_false), ISIS_RESTART_RR,
|
|
"When set, the router is beginning a graceful restart", HFILL }},
|
|
|
|
{ &hf_isis_hello_clv_restart_flags_ra,
|
|
{ "Restart Acknowledgment", "isis.hello.clv_restart_flags.ra",
|
|
FT_BOOLEAN, 8, TFS(&tfs_true_false), ISIS_RESTART_RA,
|
|
"When set, the router is willing to enter helper mode", HFILL }},
|
|
|
|
{ &hf_isis_hello_clv_restart_flags_sa,
|
|
{ "Suppress Adjacency", "isis.hello.clv_restart_flags.sa",
|
|
FT_BOOLEAN, 8, TFS(&tfs_true_false), ISIS_RESTART_SA,
|
|
"When set, the router is starting as opposed to restarting", HFILL }},
|
|
|
|
{ &hf_isis_hello_clv_restart_remain_time,
|
|
{ "Remaining holding time", "isis.hello.clv_restart.remain_time",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"How long the helper router will maintain the existing adjacency", HFILL }},
|
|
|
|
{ &hf_isis_hello_clv_restart_neighbor,
|
|
{ "Restarting Neighbor ID", "isis.hello.clv_restart.neighbor",
|
|
FT_SYSTEM_ID, BASE_NONE, NULL, 0x0,
|
|
"The System ID of the restarting neighbor", HFILL }},
|
|
|
|
/* Generated from convert_proto_tree_add_text.pl */
|
|
{ &hf_isis_hello_mcid, { "MCID", "isis.hello.mcid", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_aux_mcid, { "Aux MCID", "isis.hello.aux_mcid", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_digest, { "Digest", "isis.hello.digest", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_digest_v, { "V", "isis.hello.digest.v", FT_UINT8, BASE_DEC, NULL, 0x10, NULL, HFILL }},
|
|
{ &hf_isis_hello_digest_a, { "A", "isis.hello.digest.a", FT_UINT8, BASE_DEC, NULL, 0x0c, NULL, HFILL }},
|
|
{ &hf_isis_hello_digest_d, { "D", "isis.hello.digest.d", FT_UINT8, BASE_DEC, NULL, 0x03, NULL, HFILL }},
|
|
{ &hf_isis_hello_ect, { "ECT", "isis.hello.ect", FT_BYTES, SEP_DASH, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_bvid, { "BVID", "isis.hello.bvid", FT_UINT16, BASE_HEX_DEC, NULL, 0xFFF0, NULL, HFILL }},
|
|
{ &hf_isis_hello_bvid_u, { "U", "isis.hello.bvid.u", FT_UINT16, BASE_HEX_DEC, NULL, 0x0008, NULL, HFILL }},
|
|
{ &hf_isis_hello_bvid_m, { "M", "isis.hello.bvid.m", FT_UINT16, BASE_HEX_DEC, NULL, 0x0004, NULL, HFILL }},
|
|
{ &hf_isis_hello_area_address, { "Area address", "isis.hello.area_address", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_instance_identifier, { "Instance Identifier", "isis.hello.iid", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_supported_itid, { "Supported ITID", "isis.hello.supported_itid", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_clv_nlpid_nlpid, { "NLPID", "isis.hello.clv_nlpid.nlpid", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_clv_ip_authentication, { "NLPID", "isis.hello.clv_ip_authentication", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_authentication, { "Authentication", "isis.hello.clv_authentication", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_mtid, { "Topology ID", "isis.hello.mtid", FT_UINT16, BASE_DEC|BASE_RANGE_STRING, RVALS(mtid_strings), 0x0fff, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_neighbor_sf, { "Smallest flag", "isis.hello.trill_neighbor.sf", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x80, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_neighbor_lf, { "Largest flag", "isis.hello.trill_neighbor.lf", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x40, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_neighbor_size, { "SNPA Size", "isis.hello.trill_neighbor.size", FT_UINT8, BASE_DEC, NULL, 0x1f, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_neighbor_ff, { "Failed flag", "isis.hello.trill_neighbor.ff", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x80, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_neighbor_of, { "OOMF flag", "isis.hello.trill_neighbor.of", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x40, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_neighbor_reserved, { "Reserved", "isis.hello.trill_neighbor.reserved", FT_UINT8, BASE_DEC, NULL, 0x3f, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_neighbor_mtu, { "Tested MTU", "isis.hello.trill_neighbor.mtu", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_neighbor_snpa, { "SNPA", "isis.hello.trill_neighbor.snpa", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_checksum, { "Checksum", "isis.hello.checksum", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_checksum_status, { "Checksum Status", "isis.hello.checksum.status", FT_UINT8, BASE_NONE, VALS(proto_checksum_vals), 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_adjacency_state, { "Adjacency State", "isis.hello.adjacency_state", FT_UINT8, BASE_DEC, VALS(adj_state_vals), 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_extended_local_circuit_id, { "Extended Local circuit ID", "isis.hello.extended_local_circuit_id", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_neighbor_systemid, { "Neighbor SystemID", "isis.hello.neighbor_systemid", FT_SYSTEM_ID, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_neighbor_extended_local_circuit_id, { "Neighbor Extended Local circuit ID", "isis.hello.neighbor_extended_local_circuit_id", FT_UINT32, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_vlan_flags_port_id, { "Port ID", "isis.hello.vlan_flags.port_id", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_vlan_flags_nickname, { "Nickname", "isis.hello.vlan_flags.nickname", FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_vlan_flags_af, { "Appointed Forwarder", "isis.hello.vlan_flags.af", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x8000, NULL, HFILL }},
|
|
{ &hf_isis_hello_vlan_flags_ac, { "Access Port", "isis.hello.vlan_flags.ac", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x4000, NULL, HFILL }},
|
|
{ &hf_isis_hello_vlan_flags_vm, { "VLAN Mapping Detected", "isis.hello.vlan_flags.vm", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x2000, NULL, HFILL }},
|
|
{ &hf_isis_hello_vlan_flags_by, { "Bypass Pseudonode", "isis.hello.vlan_flags.by", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x1000, NULL, HFILL }},
|
|
{ &hf_isis_hello_vlan_flags_outer_vlan, { "Outer VLAN", "isis.hello.vlan_flags.outer_vlan", FT_UINT16, BASE_DEC, NULL, 0x0fff, NULL, HFILL }},
|
|
{ &hf_isis_hello_vlan_flags_tr, { "Trunk Port", "isis.hello.vlan_flags.tr", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x8000, NULL, HFILL }},
|
|
{ &hf_isis_hello_vlan_flags_reserved, { "Reserved", "isis.hello.vlan_flags.reserved", FT_BOOLEAN, 16, TFS(&tfs_set_notset), 0x7000, NULL, HFILL }},
|
|
{ &hf_isis_hello_vlan_flags_designated_vlan, { "Designated VLAN", "isis.hello.vlan_flags.designated_vlan", FT_UINT16, BASE_DEC, NULL, 0x0fff, NULL, HFILL }},
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|
{ &hf_isis_hello_enabled_vlans, { "Enabled VLANs", "isis.hello.enabled_vlans", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
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|
{ &hf_isis_hello_appointed_vlans, { "Appointed VLANs", "isis.hello.appointed_vlans", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_af_nickname, { "Nickname", "isis.hello.af.nickname", FT_UINT16, BASE_HEX_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_af_start_vlan, { "Start VLAN", "isis.hello.af.start_vlan", FT_UINT16, BASE_DEC, NULL, 0x0fff, NULL, HFILL }},
|
|
{ &hf_isis_hello_af_end_vlan, { "End VLAN", "isis.hello.af.end_vlan", FT_UINT16, BASE_DEC, NULL, 0x0fff, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_version, { "Maximum version", "isis.hello.trill.maximum_version", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_hello_reduction, { "Hello Reduction", "isis.hello.trill.hello_reduction", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), 0x80000000, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_unassigned_1, { "Unassigned", "isis.hello.trill.unassigned_1", FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x60000000, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_hop_by_hop_flags, { "Hop-by-hop Extended Header Flags", "isis.hello.trill.hop_by_hop_flags", FT_BOOLEAN, 32, TFS(&tfs_supported_not_supported), 0x1ffc0000, NULL, HFILL }},
|
|
{ &hf_isis_hello_trill_unassigned_2, { "Unassigned", "isis.hello.trill.unassigned_2",FT_BOOLEAN, 32, TFS(&tfs_set_notset), 0x0003ffff, NULL, HFILL }},
|
|
{ &hf_isis_hello_is_neighbor, { "IS Neighbor", "isis.hello.is_neighbor", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_reverse_metric_flags, { "Flags", "isis.hello.reverse_metric.flags", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_reverse_metric_flag_reserved, { "Reserved", "isis.hello.reverse_metric.flags.reserved", FT_UINT8, BASE_HEX, NULL, 0xFC, NULL, HFILL }},
|
|
{ &hf_isis_hello_reverse_metric_flag_u, { "U", "isis.hello.reverse_metric.flags.u", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x02, NULL, HFILL }},
|
|
{ &hf_isis_hello_reverse_metric_flag_w, { "W", "isis.hello.reverse_metric.flags.w", FT_BOOLEAN, 8, TFS(&tfs_set_notset), 0x01, NULL, HFILL }},
|
|
{ &hf_isis_hello_reverse_metric_metric, { "Metric", "isis.hello.reverse_metric.metric", FT_UINT24, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_reverse_metric_sub_length, { "Sub-TLV length", "isis.hello.reverse_metric.sub_length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_reverse_metric_sub_data, { "Sub-TLV data", "isis.hello.reverse_metric.sub_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
{ &hf_isis_hello_bfd_enabled_nlpid, { "NLPID", "isis.hello.bfd_enabled.nlpid", FT_UINT8, BASE_HEX, VALS(nlpid_vals), 0x0, NULL, HFILL }},
|
|
|
|
/* rfc6119 */
|
|
{ &hf_isis_hello_clv_ipv6_glb_int_addr,
|
|
{ "IPv6 Global interface address", "isis.hello.clv_ipv6_glb_int_addr",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_isis_hello,
|
|
&ett_isis_hello_clv_area_addr,
|
|
&ett_isis_hello_clv_instance_identifier,
|
|
&ett_isis_hello_clv_is_neighbors,
|
|
&ett_isis_hello_clv_padding,
|
|
&ett_isis_hello_clv_unknown,
|
|
&ett_isis_hello_clv_nlpid,
|
|
&ett_isis_hello_clv_nlpid_nlpid,
|
|
&ett_isis_hello_clv_authentication,
|
|
&ett_isis_hello_clv_ip_authentication,
|
|
&ett_isis_hello_clv_ipv4_int_addr,
|
|
&ett_isis_hello_clv_ipv6_int_addr,
|
|
&ett_isis_hello_clv_ptp_adj,
|
|
&ett_isis_hello_clv_mt,
|
|
&ett_isis_hello_clv_restart,
|
|
&ett_isis_hello_clv_restart_flags,
|
|
&ett_isis_hello_clv_mt_port_cap,
|
|
&ett_isis_hello_clv_mt_port_cap_spb_mcid,
|
|
&ett_isis_hello_clv_mt_port_cap_spb_digest,
|
|
&ett_isis_hello_clv_mt_port_cap_spb_bvid_tuples,
|
|
&ett_isis_hello_clv_mt_port_cap_vlan_flags,
|
|
&ett_isis_hello_clv_mt_port_cap_enabled_vlans,
|
|
&ett_isis_hello_clv_mt_port_cap_appointedfwrdrs,
|
|
&ett_isis_hello_clv_mt_port_cap_port_trill_ver,
|
|
&ett_isis_hello_clv_mt_port_cap_vlans_appointed,
|
|
&ett_isis_hello_clv_trill_neighbor,
|
|
&ett_isis_hello_clv_checksum,
|
|
&ett_isis_hello_clv_reverse_metric,
|
|
&ett_isis_hello_clv_bfd_enabled,
|
|
&ett_isis_hello_clv_ipv6_glb_int_addr, /* CLV 233, rfc6119 */
|
|
&ett_isis_hello_reverse_metric_flags
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_isis_hello_short_pdu, { "isis.lsp.hello_pdu", PI_MALFORMED, PI_ERROR, "PDU length less than header length", EXPFILL }},
|
|
{ &ei_isis_hello_long_pdu, { "isis.lsp.hello_pdu", PI_MALFORMED, PI_ERROR, "PDU length greater than packet length", EXPFILL }},
|
|
{ &ei_isis_hello_bad_checksum, { "isis.hello.bad_checksum", PI_CHECKSUM, PI_ERROR, "Bad checksum", EXPFILL }},
|
|
{ &ei_isis_hello_subtlv, { "isis.hello.subtlv.unknown", PI_PROTOCOL, PI_WARN, "Unknown Sub-TLV", EXPFILL }},
|
|
{ &ei_isis_hello_authentication, { "isis.hello.authentication.unknown", PI_PROTOCOL, PI_WARN, "Unknown authentication type", EXPFILL }},
|
|
{ &ei_isis_hello_short_clv, { "isis.hello.short_clv", PI_MALFORMED, PI_ERROR, "Short CLV", EXPFILL }},
|
|
{ &ei_isis_hello_clv_mt, { "isis.hello.clv_mt.malformed", PI_MALFORMED, PI_ERROR, "malformed MT-ID", EXPFILL }},
|
|
{ &ei_isis_hello_clv_unknown, { "isis.hello.clv.unknown", PI_UNDECODED, PI_NOTE, "Unknown option", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_isis_hello;
|
|
|
|
/* Register the protocol name and description */
|
|
proto_isis_hello = proto_register_protocol("ISIS HELLO", "ISIS HELLO", "isis.hello");
|
|
|
|
proto_register_field_array(proto_isis_hello, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_isis_hello = expert_register_protocol(proto_isis_hello);
|
|
expert_register_field_array(expert_isis_hello, ei, array_length(ei));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_isis_hello(void)
|
|
{
|
|
dissector_add_uint("isis.type", ISIS_TYPE_L1_HELLO, create_dissector_handle(dissect_isis_l1_hello, proto_isis_hello));
|
|
dissector_add_uint("isis.type", ISIS_TYPE_L2_HELLO, create_dissector_handle(dissect_isis_l2_hello, proto_isis_hello));
|
|
dissector_add_uint("isis.type", ISIS_TYPE_PTP_HELLO, create_dissector_handle(dissect_isis_ptp_hello, proto_isis_hello));
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|