![Guy Harris](/assets/img/avatar_default.png)
Add a tvb_print_system_id() routine, and use that in various ISIS dissectors, while we're at it. Change-Id: I31b6b9ea8faf2b4849f974ec7ed27fbdd14b91ef Reviewed-on: https://code.wireshark.org/review/1145 Reviewed-by: Guy Harris <guy@alum.mit.edu>
1195 lines
38 KiB
C
1195 lines
38 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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* 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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#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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/*
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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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#define APPEND_BOOLEAN_FLAG(flag, item, string) \
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if(flag){ \
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if(item) \
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proto_item_append_text(item, string, sep); \
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sep = cont_sep; \
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}
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static const char initial_sep[] = " (";
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static const char cont_sep[] = ", ";
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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_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_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_neighbor_extended_local_circuit_id = -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_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_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_aux_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_checksum = -1;
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static expert_field ei_isis_hello_short_packet = EI_INIT;
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static expert_field ei_isis_hello_long_packet = 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_authentication = 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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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, *ti;
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if (sublen != SUBLEN) {
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proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_packet, 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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ti = proto_tree_add_text( tree, tvb, offset-2, sublen+2,
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"SPB MCID: Type: 0x%02x, Length: %d", subtype, sublen);
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subtree = proto_item_add_subtree(ti, ett_isis_hello_clv_mt_port_cap_spb_mcid);
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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_packet, 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, *ti;
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const guint8 vad = tvb_get_guint8(tvb, offset);
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ti = proto_tree_add_text( tree, tvb, offset-2, sublen+2,
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"SPB Digest: Type: 0x%02x, Length: %d", subtype, sublen);
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subtree = proto_item_add_subtree(ti, ett_isis_hello_clv_mt_port_cap_spb_digest);
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proto_tree_add_text( subtree, tvb, offset, 1,
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"V: %d, A: %d, D: %d",
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(vad >> 4) & 0x1,
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(vad >> 2) & 0x3,
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(vad >> 0) & 0x3);
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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, *ti;
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int subofs = offset;
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ti = proto_tree_add_text( tree, tvb, offset-2, sublen+2,
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"SPB Base Vlan Identifiers: Type: 0x%02x, Length: %d", subtype, sublen);
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subtree = proto_item_add_subtree(ti, ett_isis_hello_clv_mt_port_cap_spb_bvid_tuples);
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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_packet, 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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const guint8 *ect_tlv = tvb_get_ptr(tvb, subofs, 6);
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guint16 word = (ect_tlv[4] << 8) | ect_tlv[5];
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guint16 bvid = (word >> 4) & 0xfff;
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int u_bit = (ect_tlv[5] & 8) ? 1 : 0;
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int m_bit = (ect_tlv[5] & 4) ? 1 : 0;
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proto_tree_add_text( subtree, tvb, subofs, 6,
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"ECT: %02x-%02x-%02x-%02x, BVID: 0x%03x (%d),%s U: %d, M: %d",
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ect_tlv[0], ect_tlv[1], ect_tlv[2], ect_tlv[3],
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bvid, bvid,
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( bvid < 10 ? " "
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: bvid < 100 ? " "
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: bvid < 1000 ? " "
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: ""),
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u_bit,
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m_bit);
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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_clv(tvbuff_t *tvb, packet_info* pinfo,
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proto_tree *tree, int offset, int id_length _U_, int length)
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{
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if (length >= 2) {
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/* mtid */
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proto_tree_add_item(tree, hf_isis_hello_mtid, tvb, offset, 2, ENC_BIG_ENDIAN);
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length -= 2;
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offset += 2;
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while (length >= 2) {
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guint8 subtype = tvb_get_guint8(tvb, offset);
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guint8 subtlvlen = tvb_get_guint8(tvb, offset+1);
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length -= 2;
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offset += 2;
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if (subtlvlen > length) {
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proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_packet, tvb, offset, -1,
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"Short type 0x%02x TLV (%d vs %d)", subtype, subtlvlen, length);
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return;
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}
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if (subtype == 0x04) { /* SPB MCID */
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dissect_hello_mt_port_cap_spb_mcid_clv(tvb, pinfo, tree, offset, subtype, subtlvlen);
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}
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else if (subtype == 0x05) { /* SPB Digest */
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dissect_hello_mt_port_cap_spb_digest_clv(tvb, pinfo, tree, offset, subtype, subtlvlen);
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}
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else if (subtype == 0x06) { /* SPB BVID Tuples */
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dissect_hello_mt_port_cap_spb_bvid_tuples_clv(tvb, pinfo, tree, offset, subtype, subtlvlen);
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}
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else {
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proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_subtlv, tvb, offset, -1,
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"Unknown SubTlv: Type: 0x%02x, Length: %d", subtype, subtlvlen );
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}
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length -= subtlvlen;
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offset += subtlvlen;
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}
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}
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}
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/*
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* The Restart CLV is documented in RFC 3847 (Restart Signaling for
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* Intermediate System to Intermediate System). The CLV looks like this
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*
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* Type 211
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* Length # of octets in the value field (1 to (3 + ID Length))
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* Value
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*
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* No. of octets
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* +-----------------------+
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* | Flags | 1
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* +-----------------------+
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* | Remaining Time | 2
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* +-----------------------+
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* | Restarting Neighbor ID| ID Length
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* +-----------------------+
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*
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* Flags (1 octet)
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*
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* 0 1 2 3 4 5 6 7
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* +--+--+--+--+--+--+--+--+
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* | Reserved |SA|RA|RR|
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* +--+--+--+--+--+--+--+--+
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*
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* RR - Restart Request
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* RA - Restart Acknowledgement
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* SA - Suppress adjacency advertisement
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*
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* The Remaining Time and Restarting Neighbor ID fields are only required when
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* the RA flag is set. The Flags field is always required.
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*
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*/
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/*
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* Name: dissect_hello_restart_clv()
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*
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* Description:
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* Decode for a restart clv - only found in IIHs
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* hence no call in the common clv dissector
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*
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*/
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static void
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dissect_hello_restart_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
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proto_tree *tree, int offset, int id_length, int length)
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{
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int restart_options=0;
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proto_tree *flags_tree;
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proto_item *restart_flags_item;
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proto_item *hold_time_item;
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const char *sep;
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if (length >= 1) {
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restart_options = tvb_get_guint8(tvb, offset);
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restart_flags_item = proto_tree_add_uint ( tree, hf_isis_hello_clv_restart_flags,
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tvb, offset, 1, restart_options);
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flags_tree = proto_item_add_subtree(restart_flags_item, ett_isis_hello_clv_restart_flags);
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proto_tree_add_boolean (flags_tree, hf_isis_hello_clv_restart_flags_sa,
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tvb, offset, 1, restart_options );
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proto_tree_add_boolean (flags_tree, hf_isis_hello_clv_restart_flags_ra,
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tvb, offset, 1, restart_options );
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proto_tree_add_boolean (flags_tree, hf_isis_hello_clv_restart_flags_rr,
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tvb, offset, 1, restart_options );
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/* Append an indication of which flags are set in the restart
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* options
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*/
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sep = initial_sep;
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APPEND_BOOLEAN_FLAG(ISIS_MASK_RESTART_SA(restart_options), restart_flags_item, "%sSA");
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APPEND_BOOLEAN_FLAG(ISIS_MASK_RESTART_RA(restart_options), restart_flags_item, "%sRA");
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APPEND_BOOLEAN_FLAG(ISIS_MASK_RESTART_RR(restart_options), restart_flags_item, "%sRR");
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if (sep != initial_sep)
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{
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proto_item_append_text (restart_flags_item, ")");
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}
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}
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/* The Remaining Time field should only be present if the RA flag is
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* set
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*/
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if (length >= 3 && ISIS_MASK_RESTART_RA(restart_options)) {
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hold_time_item = proto_tree_add_item( tree, hf_isis_hello_clv_restart_remain_time,
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tvb, offset+1, 2, ENC_BIG_ENDIAN );
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proto_item_append_text( hold_time_item, "s" );
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}
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/* The Restarting Neighbor ID should only be present if the RA flag is
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* set.
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*/
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if (length >= 3 + id_length && ISIS_MASK_RESTART_RA(restart_options)) {
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proto_tree_add_item( tree, hf_isis_hello_clv_restart_neighbor, tvb, offset+3, id_length, ENC_NA);
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}
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}
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/*
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* Name: dissect_hello_nlpid_clv()
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*
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* Description:
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* Decode for a hello packets NLPID clv. Calls into the
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* clv common one.
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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 * : proto tree to build on (may be null)
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* int : current offset into packet data
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* int : length of IDs in packet.
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* int : length of this clv
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*
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* Output:
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* void, will modify proto_tree if not null.
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*/
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static void
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dissect_hello_nlpid_clv(tvbuff_t *tvb, packet_info* pinfo _U_,
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proto_tree *tree, int offset, int id_length _U_, int length)
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{
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isis_dissect_nlpid_clv(tvb, tree, offset, length);
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}
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/*
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* Name: dissect_hello_mt_clv()
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*
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* Description:
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* Decode for a hello packets Multi Topology clv. Calls into the
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* clv common one.
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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 * : proto tree to build on (may be null)
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* int : current offset into packet data
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* int : length of IDs in packet.
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* int : length of this clv
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*
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* Output:
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* void, will modify proto_tree if not null.
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*/
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static void
|
|
dissect_hello_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_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, int id_length _U_, int length)
|
|
{
|
|
isis_dissect_ip_int_clv(tree, pinfo, tvb, &ei_isis_hello_short_packet,
|
|
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, int id_length _U_, int length)
|
|
{
|
|
isis_dissect_ipv6_int_clv(tree, pinfo, tvb, &ei_isis_hello_short_packet,
|
|
offset, length, hf_isis_hello_clv_ipv6_int_addr );
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_authentication_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello 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_hello_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_hello_authentication, offset, length);
|
|
}
|
|
|
|
/*
|
|
* Name: dissect_hello_ip_authentication_clv()
|
|
*
|
|
* Description:
|
|
* Decode for a hello packets IP 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_hello_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_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, int id_length _U_, int length) {
|
|
|
|
guint16 pdu_length,checksum, cacl_checksum=0;
|
|
|
|
if (tree) {
|
|
if ( length != 2 ) {
|
|
proto_tree_add_text ( tree, tvb, offset, length,
|
|
"incorrect checksum length (%u), should be (2)", length );
|
|
return;
|
|
}
|
|
|
|
checksum = tvb_get_ntohs(tvb, offset);
|
|
|
|
/* the check_and_get_checksum() function needs to know how big
|
|
* the packet is. we can either pass through the pdu-len through several layers
|
|
* of dissectors and wrappers or extract the PDU length field from the PDU specific header
|
|
* which is offseted 17 bytes in IIHs (relative to the beginning of the IS-IS packet) */
|
|
pdu_length = tvb_get_ntohs(tvb, 17);
|
|
|
|
/* unlike the LSP checksum verification which starts at an offset of 12 we start at offset 0*/
|
|
switch (check_and_get_checksum(tvb, 0, pdu_length, checksum, offset, &cacl_checksum))
|
|
{
|
|
case NO_CKSUM :
|
|
proto_tree_add_uint_format_value( tree, hf_isis_hello_checksum, tvb, offset, length, checksum,
|
|
"0x%04x [unused]", checksum);
|
|
break;
|
|
case DATA_MISSING :
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_long_packet, tvb, offset, -1,
|
|
"Packet length %d went beyond packet", tvb_length(tvb) );
|
|
break;
|
|
case CKSUM_NOT_OK :
|
|
proto_tree_add_uint_format_value( tree, hf_isis_hello_checksum, tvb, offset, length, checksum,
|
|
"0x%04x [incorrect, should be 0x%04x]",
|
|
checksum,
|
|
cacl_checksum);
|
|
break;
|
|
case CKSUM_OK :
|
|
proto_tree_add_uint_format_value( tree, hf_isis_hello_checksum, tvb, offset, length, checksum,
|
|
"0x%04x [correct]", checksum);
|
|
break;
|
|
default :
|
|
g_message("'check_and_get_checksum' returned an invalid value");
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* 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, int id_length _U_, int length)
|
|
{
|
|
isis_dissect_area_address_clv(tree, pinfo, tvb, &ei_isis_hello_short_packet, 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, int id_length, int length)
|
|
{
|
|
switch(length)
|
|
{
|
|
case 1:
|
|
proto_tree_add_item(tree, hf_isis_hello_adjacency_state, tvb, offset, 1, ENC_NA);
|
|
break;
|
|
case 5:
|
|
proto_tree_add_item(tree, hf_isis_hello_adjacency_state, tvb, offset, 1, ENC_NA);
|
|
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_NA);
|
|
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, id_length, ENC_NA);
|
|
break;
|
|
case 15:
|
|
proto_tree_add_item(tree, hf_isis_hello_adjacency_state, tvb, offset, 1, ENC_NA);
|
|
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, id_length, ENC_NA);
|
|
proto_tree_add_item(tree, hf_isis_hello_neighbor_extended_local_circuit_id, tvb, offset+5+id_length, 4, ENC_BIG_ENDIAN);
|
|
break;
|
|
default:
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_packet, 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,
|
|
int id_length _U_, int length)
|
|
{
|
|
while ( length > 0 ) {
|
|
if (length<6) {
|
|
proto_tree_add_expert_format(tree, pinfo, &ei_isis_hello_short_packet, 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_,
|
|
int id_length _U_, int length _U_)
|
|
{
|
|
/* nothing to do here! */
|
|
}
|
|
|
|
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_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_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
|
|
},
|
|
{
|
|
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_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
|
|
},
|
|
{
|
|
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_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 Option",
|
|
&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
|
|
},
|
|
{
|
|
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, int header_length, int id_length)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *hello_tree;
|
|
int pdu_length;
|
|
|
|
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);
|
|
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_circuit, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_circuit_reserved, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_source_id, tvb, offset, id_length, ENC_NA);
|
|
col_append_fstr(pinfo->cinfo, COL_INFO, ", System-ID: %s", tvb_print_system_id( tvb, offset, id_length ));
|
|
|
|
offset += id_length;
|
|
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_holding_timer, tvb,
|
|
offset, 2, ENC_BIG_ENDIAN);
|
|
offset += 2;
|
|
|
|
pdu_length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_uint(hello_tree, hf_isis_hello_pdu_length, tvb,
|
|
offset, 2, pdu_length);
|
|
offset += 2;
|
|
|
|
if (opts == clv_ptp_hello_opts) {
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_local_circuit_id, tvb,
|
|
offset, 1, ENC_BIG_ENDIAN );
|
|
offset += 1;
|
|
} else {
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_priority, tvb, offset, 1, ENC_NA);
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_priority_reserved, tvb, offset, 1, ENC_NA);
|
|
offset += 1;
|
|
|
|
proto_tree_add_item(hello_tree, hf_isis_hello_lan_id, tvb, offset, id_length + 1, ENC_NA);
|
|
offset += id_length + 1;
|
|
}
|
|
|
|
pdu_length -= header_length;
|
|
if (pdu_length < 0) {
|
|
expert_add_info_format(pinfo, ti, &ei_isis_hello_long_packet,
|
|
"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, hello_tree, offset,
|
|
opts, &ei_isis_hello_short_packet, pdu_length, id_length,
|
|
ett_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->header_length, isis->system_id_len);
|
|
return tvb_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->header_length, isis->system_id_len);
|
|
return tvb_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->header_length, isis->system_id_len);
|
|
return tvb_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_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_mtid, { "MTID", "isis.hello.mtid", FT_UINT16, BASE_HEX, NULL, 0xfff, NULL, HFILL }},
|
|
{ &hf_isis_hello_checksum, { "Checksum", "isis.hello.checksum", FT_UINT16, BASE_HEX, NULL, 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_is_neighbor, { "IS Neighbor", "isis.hello.is_neighbor", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_isis_hello,
|
|
&ett_isis_hello_clv_area_addr,
|
|
&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_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_aux_mcid,
|
|
&ett_isis_hello_clv_mt_port_cap_spb_digest,
|
|
&ett_isis_hello_clv_mt_port_cap_spb_bvid_tuples,
|
|
&ett_isis_hello_clv_checksum
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_isis_hello_short_packet, { "isis.hello.short_packet", PI_MALFORMED, PI_ERROR, "Short packet", EXPFILL }},
|
|
{ &ei_isis_hello_long_packet, { "isis.hello.long_packet", PI_MALFORMED, PI_ERROR, "Long packet", EXPFILL }},
|
|
{ &ei_isis_hello_subtlv, { "isis.hello.subtlv.unknown", PI_PROTOCOL, PI_WARN, "Unknown SubTLV", EXPFILL }},
|
|
{ &ei_isis_hello_authentication, { "isis.hello.authentication.unknown", PI_PROTOCOL, PI_WARN, "Unknown authentication type", 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, new_create_dissector_handle(dissect_isis_l1_hello, proto_isis_hello));
|
|
dissector_add_uint("isis.type", ISIS_TYPE_L2_HELLO, new_create_dissector_handle(dissect_isis_l2_hello, proto_isis_hello));
|
|
dissector_add_uint("isis.type", ISIS_TYPE_PTP_HELLO, new_create_dissector_handle(dissect_isis_ptp_hello, proto_isis_hello));
|
|
}
|