2000-05-28 22:59:18 +00:00
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/* packet-eigrp.c
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2000-11-09 05:16:19 +00:00
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* Routines for EIGRP dissection
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* Copyright 2000, Paul Ionescu <paul@acorp.ro>
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2000-05-28 22:59:18 +00:00
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*
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2004-07-18 00:24:25 +00:00
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* $Id$
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2000-05-28 22:59:18 +00:00
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*
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* Ethereal - Network traffic analyzer
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2001-04-23 17:51:37 +00:00
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* By Gerald Combs <gerald@ethereal.com>
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2000-05-28 22:59:18 +00:00
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* Copyright 1998 Gerald Combs
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2002-08-28 21:04:11 +00:00
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*
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2000-05-28 22:59:18 +00:00
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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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2002-08-28 21:04:11 +00:00
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*
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2000-05-28 22:59:18 +00:00
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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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2002-08-28 21:04:11 +00:00
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*
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2000-05-28 22:59:18 +00:00
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <glib.h>
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2002-01-21 07:37:49 +00:00
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#include <epan/packet.h>
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2004-08-06 19:57:49 +00:00
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#include <epan/addr_resolv.h>
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2000-05-28 22:59:18 +00:00
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2002-01-21 07:37:49 +00:00
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#include <epan/atalk-utils.h>
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2004-03-06 03:25:10 +00:00
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#include <epan/addr_and_mask.h>
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2001-04-23 17:51:37 +00:00
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#include "ipproto.h"
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2000-05-30 03:35:55 +00:00
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#include "packet-ipx.h"
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2000-05-28 22:59:18 +00:00
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2004-03-06 02:20:55 +00:00
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/*
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* See
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*
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* http://www.rhyshaden.com/eigrp.htm
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*/
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2000-05-28 22:59:18 +00:00
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#define EIGRP_UPDATE 0x01
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#define EIGRP_REQUEST 0x02
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#define EIGRP_QUERY 0x03
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#define EIGRP_REPLY 0x04
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#define EIGRP_HELLO 0x05
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2000-11-09 05:16:19 +00:00
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#define EIGRP_SAP 0x06
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#define EIGRP_HI 0x20 /* This value is for my own need to make a difference between Hello and Ack */
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#define EIGRP_ACK 0x40 /* This value is for my own need to make a difference between Hello and Ack */
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#define TLV_PAR 0x0001
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2001-05-03 22:50:33 +00:00
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#define TLV_AUTH 0x0002
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2000-11-09 05:16:19 +00:00
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#define TLV_SEQ 0x0003
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#define TLV_SV 0x0004
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#define TLV_NMS 0x0005
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#define TLV_IP_INT 0x0102
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#define TLV_IP_EXT 0x0103
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#define TLV_AT_INT 0x0202
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#define TLV_AT_EXT 0x0203
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#define TLV_AT_CBL 0x0204
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#define TLV_IPX_INT 0x0302
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#define TLV_IPX_EXT 0x0303
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2000-05-28 22:59:18 +00:00
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2000-11-09 05:16:19 +00:00
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#define EIGRP_HEADER_LENGTH 20
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static gint proto_eigrp = -1;
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static gint hf_eigrp_opcode = -1;
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static gint hf_eigrp_as = -1;
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static gint hf_eigrp_tlv = -1;
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2000-05-28 22:59:18 +00:00
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static gint ett_eigrp = -1;
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2000-11-09 05:16:19 +00:00
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static gint ett_tlv = -1;
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2000-05-28 22:59:18 +00:00
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2001-05-03 22:50:33 +00:00
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static dissector_handle_t ipxsap_handle;
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2000-05-28 22:59:18 +00:00
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static const value_string eigrp_opcode_vals[] = {
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{ EIGRP_HELLO, "Hello/Ack" },
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{ EIGRP_UPDATE, "Update" },
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{ EIGRP_REPLY, "Reply" },
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{ EIGRP_QUERY, "Query" },
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{ EIGRP_REQUEST, "Request" },
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2000-11-09 05:16:19 +00:00
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{ EIGRP_SAP, "IPX/SAP Update" },
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{ EIGRP_HI, "Hello" },
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{ EIGRP_ACK, "Acknowledge" },
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2002-08-28 21:04:11 +00:00
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{ 0, NULL }
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2000-05-28 22:59:18 +00:00
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};
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2000-11-09 05:16:19 +00:00
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static const value_string eigrp_tlv_vals[] = {
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{ TLV_PAR, "EIGRP Parameters"},
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2001-05-03 22:50:33 +00:00
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{ TLV_AUTH, "Authentication data"},
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2000-11-09 05:16:19 +00:00
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{ TLV_SEQ , "Sequence"},
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{ TLV_SV, "Software Version"},
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{ TLV_NMS , "Next multicast sequence"},
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{ TLV_IP_INT, "IP internal route"},
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{ TLV_IP_EXT, "IP external route"},
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{ TLV_AT_INT, "AppleTalk internal route"},
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{ TLV_AT_EXT, "AppleTalk external route"},
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{ TLV_AT_CBL, "AppleTalk cable configuration"},
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{ TLV_IPX_INT, "IPX internal route"},
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{ TLV_IPX_EXT, "IPX external route"},
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{ 0, NULL}
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};
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static const value_string eigrp_pid_vals[] = {
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{ 1, "IGRP"},
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{ 2, "EIGRP"},
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{ 3, "Static Route"},
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{ 4, "RIP"},
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{ 5, "Hello"},
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{ 6, "OSPF"},
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{ 7, "IS-IS"},
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{ 8, "EGP"},
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{ 9, "BGP"},
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{ 10, "IDRP"},
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{ 11, "Connected link"},
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{ 0, NULL}
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};
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2002-05-02 09:28:43 +00:00
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static void dissect_eigrp_par (tvbuff_t *tvb, proto_tree *tree);
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static void dissect_eigrp_seq (tvbuff_t *tvb, proto_tree *tree);
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2000-11-09 05:16:19 +00:00
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static void dissect_eigrp_sv (tvbuff_t *tvb, proto_tree *tree, proto_item *ti);
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static void dissect_eigrp_nms (tvbuff_t *tvb, proto_tree *tree, proto_item *ti);
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static void dissect_eigrp_ip_int (tvbuff_t *tvb, proto_tree *tree, proto_item *ti);
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static void dissect_eigrp_ip_ext (tvbuff_t *tvb, proto_tree *tree, proto_item *ti);
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static void dissect_eigrp_ipx_int (tvbuff_t *tvb, proto_tree *tree, proto_item *ti);
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static void dissect_eigrp_ipx_ext (tvbuff_t *tvb, proto_tree *tree, proto_item *ti);
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static void dissect_eigrp_at_cbl (tvbuff_t *tvb, proto_tree *tree, proto_item *ti);
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static void dissect_eigrp_at_int (tvbuff_t *tvb, proto_tree *tree, proto_item *ti);
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static void dissect_eigrp_at_ext (tvbuff_t *tvb, proto_tree *tree, proto_item *ti);
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2000-05-30 03:35:55 +00:00
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static void
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2000-11-09 05:16:19 +00:00
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dissect_eigrp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) {
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proto_tree *eigrp_tree,*tlv_tree;
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2000-05-28 22:59:18 +00:00
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proto_item *ti;
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2002-08-28 21:04:11 +00:00
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2000-11-09 05:16:19 +00:00
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guint opcode,opcode_tmp;
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guint16 tlv,size, offset = EIGRP_HEADER_LENGTH;
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guint32 ack;
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2002-08-28 21:04:11 +00:00
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2001-12-10 00:26:21 +00:00
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if (check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "EIGRP");
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if (check_col(pinfo->cinfo, COL_INFO))
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col_clear(pinfo->cinfo, COL_INFO);
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2001-01-22 03:33:45 +00:00
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2000-11-09 05:16:19 +00:00
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opcode_tmp=opcode=tvb_get_guint8(tvb,1);
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ack = tvb_get_ntohl(tvb,12);
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if (opcode==EIGRP_HELLO) { if (ack == 0) opcode_tmp=EIGRP_HI; else opcode_tmp=EIGRP_ACK; }
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2002-08-28 21:04:11 +00:00
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2001-12-10 00:26:21 +00:00
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if (check_col(pinfo->cinfo, COL_INFO))
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col_add_str(pinfo->cinfo, COL_INFO,
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2000-11-09 05:16:19 +00:00
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val_to_str(opcode_tmp , eigrp_opcode_vals, "Unknown (0x%04x)"));
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2000-05-28 22:59:18 +00:00
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Add the "Edit:Protocols..." feature which currently only implements
the following:
It is now possible to enable/disable a particular protocol decoding
(i.e. the protocol dissector is void or not). When a protocol
is disabled, it is displayed as Data and of course, all linked
sub-protocols are disabled as well.
Disabling a protocol could be interesting:
- in case of buggy dissectors
- in case of wrong heuristics
- for performance reasons
- to decode the data as another protocol (TODO)
Currently (if I am not wrong), all dissectors but NFS can be disabled
(and dissectors that do not register protocols :-)
I do not like the way the RPC sub-dissectors are disabled (in the
sub-dissectors) since this could be done in the RPC dissector itself,
knowing the sub-protocol hfinfo entry (this is why, I've not modified
the NFS one yet).
Two functions are added in proto.c :
gboolean proto_is_protocol_enabled(int n);
void proto_set_decoding(int n, gboolean enabled);
and two MACROs which can be used in dissectors:
OLD_CHECK_DISPLAY_AS_DATA(index, pd, offset, fd, tree)
CHECK_DISPLAY_AS_DATA(index, tvb, pinfo, tree)
See also the XXX in proto_dlg.c and proto.c around the new functions.
svn path=/trunk/; revision=2267
2000-08-13 14:09:15 +00:00
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2000-05-28 22:59:18 +00:00
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if (tree) {
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2002-01-24 09:20:54 +00:00
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ti = proto_tree_add_protocol_format(tree, proto_eigrp, tvb, 0, -1,
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"Cisco EIGRP");
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2002-08-28 21:04:11 +00:00
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2000-05-28 22:59:18 +00:00
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eigrp_tree = proto_item_add_subtree(ti, ett_eigrp);
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2002-08-28 21:04:11 +00:00
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2000-11-09 05:16:19 +00:00
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proto_tree_add_text (eigrp_tree, tvb, 0,1,"Version = %u",tvb_get_guint8(tvb,0)) ;
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proto_tree_add_uint_format (eigrp_tree, hf_eigrp_opcode, tvb, 1,1,opcode,"Opcode = %u (%s)",opcode,val_to_str(opcode_tmp,eigrp_opcode_vals, "Unknown")) ;
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proto_tree_add_text (eigrp_tree, tvb, 2,2,"Checksum = 0x%04x",tvb_get_ntohs(tvb,2)) ;
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proto_tree_add_text (eigrp_tree, tvb, 4,4,"Flags = 0x%08x",tvb_get_ntohl(tvb,4)) ;
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proto_tree_add_text (eigrp_tree, tvb, 8,4,"Sequence = %u",tvb_get_ntohl(tvb,8)) ;
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proto_tree_add_text (eigrp_tree, tvb, 12,4,"Acknowledge = %u",tvb_get_ntohl(tvb,12)) ;
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2002-08-28 21:04:11 +00:00
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proto_tree_add_uint (eigrp_tree, hf_eigrp_as, tvb, 16,4,tvb_get_ntohl(tvb,16)) ;
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2000-11-09 05:16:19 +00:00
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2001-05-03 22:50:33 +00:00
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if (opcode==EIGRP_SAP)
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{
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call_dissector(ipxsap_handle, tvb_new_subset(tvb, EIGRP_HEADER_LENGTH, -1, -1), pinfo, eigrp_tree);
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return;
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}
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2002-01-24 09:20:54 +00:00
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while ( tvb_reported_length_remaining(tvb,offset)>0 ) {
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2000-11-09 05:16:19 +00:00
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tlv = tvb_get_ntohs(tvb,offset);
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size = tvb_get_ntohs(tvb,offset+2);
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2002-08-28 21:04:11 +00:00
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if ( size == 0 )
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2001-05-03 22:50:33 +00:00
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{
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2002-02-01 04:34:17 +00:00
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proto_tree_add_text(eigrp_tree,tvb,offset,-1,"Unknown data (maybe authentication)");
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2001-05-03 22:50:33 +00:00
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return;
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}
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2000-11-09 05:16:19 +00:00
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2001-04-20 08:14:35 +00:00
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ti = proto_tree_add_text (eigrp_tree, tvb, offset,size,
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"%s",val_to_str(tlv, eigrp_tlv_vals, "Unknown (0x%04x)"));
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2000-11-09 05:16:19 +00:00
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tlv_tree = proto_item_add_subtree (ti, ett_tlv);
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proto_tree_add_uint_format (tlv_tree,hf_eigrp_tlv, tvb,offset,2,tlv,"Type = 0x%04x (%s)",tlv,val_to_str(tlv,eigrp_tlv_vals, "Unknown")) ;
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proto_tree_add_text (tlv_tree,tvb,offset+2,2,"Size = %u bytes",size) ;
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2002-08-28 21:04:11 +00:00
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2000-11-09 05:16:19 +00:00
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switch (tlv){
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case TLV_PAR:
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2002-05-02 09:28:43 +00:00
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dissect_eigrp_par(tvb_new_subset(tvb, offset+4, size-4, -1), tlv_tree);
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2000-11-09 05:16:19 +00:00
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break;
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case TLV_SEQ:
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2002-05-02 09:28:43 +00:00
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dissect_eigrp_seq(tvb_new_subset(tvb, offset+4, size-4, -1), tlv_tree);
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2000-11-09 05:16:19 +00:00
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break;
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case TLV_SV:
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2001-05-03 22:50:33 +00:00
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dissect_eigrp_sv(tvb_new_subset(tvb, offset+4, size-4, -1), tlv_tree, ti);
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2000-11-09 05:16:19 +00:00
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break;
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case TLV_NMS:
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2001-05-03 22:50:33 +00:00
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dissect_eigrp_nms(tvb_new_subset(tvb, offset+4, size-4, -1), tlv_tree, ti);
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2000-11-09 05:16:19 +00:00
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break;
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case TLV_IP_INT:
|
2001-05-03 22:50:33 +00:00
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dissect_eigrp_ip_int(tvb_new_subset(tvb, offset+4, size-4, -1), tlv_tree, ti);
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2002-08-28 21:04:11 +00:00
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break;
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2000-11-09 05:16:19 +00:00
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case TLV_IP_EXT:
|
2001-05-03 22:50:33 +00:00
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dissect_eigrp_ip_ext(tvb_new_subset(tvb, offset+4, size-4, -1), tlv_tree, ti);
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2002-08-28 21:04:11 +00:00
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break;
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2000-11-09 05:16:19 +00:00
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case TLV_IPX_INT:
|
2001-05-03 22:50:33 +00:00
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dissect_eigrp_ipx_int(tvb_new_subset(tvb, offset+4, size-4, -1), tlv_tree, ti);
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2002-08-28 21:04:11 +00:00
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break;
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2000-11-09 05:16:19 +00:00
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case TLV_IPX_EXT:
|
2001-05-03 22:50:33 +00:00
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dissect_eigrp_ipx_ext(tvb_new_subset(tvb, offset+4, size-4, -1), tlv_tree, ti);
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2002-08-28 21:04:11 +00:00
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break;
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2000-11-09 05:16:19 +00:00
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case TLV_AT_CBL:
|
2001-05-03 22:50:33 +00:00
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dissect_eigrp_at_cbl(tvb_new_subset(tvb, offset+4, size-4, -1), tlv_tree, ti);
|
2002-08-28 21:04:11 +00:00
|
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|
break;
|
2000-11-09 05:16:19 +00:00
|
|
|
case TLV_AT_INT:
|
2001-05-03 22:50:33 +00:00
|
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|
dissect_eigrp_at_int(tvb_new_subset(tvb, offset+4, size-4, -1), tlv_tree, ti);
|
2002-08-28 21:04:11 +00:00
|
|
|
break;
|
2000-11-09 05:16:19 +00:00
|
|
|
case TLV_AT_EXT:
|
2001-05-03 22:50:33 +00:00
|
|
|
dissect_eigrp_at_ext(tvb_new_subset(tvb, offset+4, size-4, -1), tlv_tree, ti);
|
2002-08-28 21:04:11 +00:00
|
|
|
break;
|
2001-05-03 22:50:33 +00:00
|
|
|
case TLV_AUTH:
|
|
|
|
proto_tree_add_text(tlv_tree,tvb,offset+4,size-4,"Authentication data");
|
|
|
|
break;
|
2002-05-02 09:28:43 +00:00
|
|
|
}
|
2000-11-09 05:16:19 +00:00
|
|
|
|
|
|
|
offset+=size;
|
2002-08-28 21:04:11 +00:00
|
|
|
}
|
2000-11-09 05:16:19 +00:00
|
|
|
|
2000-05-28 22:59:18 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2000-11-09 05:16:19 +00:00
|
|
|
|
|
|
|
|
2002-05-02 09:28:43 +00:00
|
|
|
static void dissect_eigrp_par (tvbuff_t *tvb, proto_tree *tree) {
|
2000-11-09 05:16:19 +00:00
|
|
|
proto_tree_add_text (tree,tvb,0,1,"K1 = %u",tvb_get_guint8(tvb,0));
|
|
|
|
proto_tree_add_text (tree,tvb,1,1,"K2 = %u",tvb_get_guint8(tvb,1));
|
|
|
|
proto_tree_add_text (tree,tvb,2,1,"K3 = %u",tvb_get_guint8(tvb,2));
|
|
|
|
proto_tree_add_text (tree,tvb,3,1,"K4 = %u",tvb_get_guint8(tvb,3));
|
|
|
|
proto_tree_add_text (tree,tvb,4,1,"K5 = %u",tvb_get_guint8(tvb,4));
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_tree_add_text (tree,tvb,5,1,"Reserved");
|
2000-11-09 05:16:19 +00:00
|
|
|
proto_tree_add_text (tree,tvb,6,2,"Hold Time = %u",tvb_get_ntohs(tvb,6));
|
|
|
|
}
|
|
|
|
|
2002-05-02 09:28:43 +00:00
|
|
|
static void dissect_eigrp_seq (tvbuff_t *tvb, proto_tree *tree)
|
2000-11-09 05:16:19 +00:00
|
|
|
{ guint8 addr_len;
|
|
|
|
addr_len=tvb_get_guint8(tvb,0);
|
|
|
|
proto_tree_add_text (tree,tvb,0,1,"Address length = %u",addr_len);
|
|
|
|
switch (addr_len){
|
|
|
|
case 4:
|
|
|
|
proto_tree_add_text (tree,tvb,1,addr_len,"IP Address = %u.%u.%u.%u",tvb_get_guint8(tvb,1),tvb_get_guint8(tvb,2),tvb_get_guint8(tvb,3),tvb_get_guint8(tvb,4));
|
|
|
|
break;
|
|
|
|
case 10:
|
|
|
|
proto_tree_add_text (tree,tvb,1,addr_len,"IPX Address = %08x.%04x.%04x.%04x",tvb_get_ntohl(tvb,1),tvb_get_ntohs(tvb,5),tvb_get_ntohs(tvb,7),tvb_get_ntohs(tvb,9));
|
|
|
|
break;
|
|
|
|
default:
|
2000-11-14 19:13:40 +00:00
|
|
|
/* nothing */
|
|
|
|
;
|
2000-11-09 05:16:19 +00:00
|
|
|
}
|
2002-08-28 21:04:11 +00:00
|
|
|
}
|
2000-11-09 05:16:19 +00:00
|
|
|
|
|
|
|
static void dissect_eigrp_sv (tvbuff_t *tvb, proto_tree *tree, proto_item *ti)
|
|
|
|
{
|
2002-05-02 09:28:43 +00:00
|
|
|
guint8 ios_rel_major, ios_rel_minor;
|
|
|
|
guint8 eigrp_rel_major, eigrp_rel_minor;
|
|
|
|
|
|
|
|
ios_rel_major = tvb_get_guint8(tvb,0);
|
|
|
|
ios_rel_minor = tvb_get_guint8(tvb,1);
|
|
|
|
proto_tree_add_text (tree,tvb,0,2," IOS release version = %u.%u",
|
|
|
|
ios_rel_major, ios_rel_minor);
|
|
|
|
proto_item_append_text (ti,": IOS=%u.%u", ios_rel_major, ios_rel_minor);
|
|
|
|
|
|
|
|
eigrp_rel_major = tvb_get_guint8(tvb,2);
|
|
|
|
eigrp_rel_minor = tvb_get_guint8(tvb,3);
|
|
|
|
proto_tree_add_text (tree,tvb,2,2,"EIGRP release version = %u.%u",
|
|
|
|
eigrp_rel_major, eigrp_rel_minor);
|
|
|
|
proto_item_append_text (ti,", EIGRP=%u.%u",
|
|
|
|
eigrp_rel_major, eigrp_rel_minor);
|
2000-11-09 05:16:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void dissect_eigrp_nms (tvbuff_t *tvb, proto_tree *tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
proto_tree_add_text (tree,tvb,0,4,"Next Multicast Sequence = %u",tvb_get_ntohl(tvb,0));
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_item_append_text (ti,": %u",tvb_get_ntohl(tvb,0));
|
2000-11-09 05:16:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2002-08-28 21:04:11 +00:00
|
|
|
|
|
|
|
static void dissect_eigrp_ip_int (tvbuff_t *tvb, proto_tree *tree, proto_item *ti)
|
2000-11-09 05:16:19 +00:00
|
|
|
{
|
2004-03-06 03:25:10 +00:00
|
|
|
guint8 ip_addr[4],length;
|
|
|
|
int addr_len;
|
2004-03-06 02:20:55 +00:00
|
|
|
|
2000-11-09 05:16:19 +00:00
|
|
|
tvb_memcpy(tvb,ip_addr,0,4);
|
|
|
|
proto_tree_add_text (tree,tvb,0,4, "Next Hop = %s",ip_to_str(ip_addr));
|
|
|
|
proto_tree_add_text (tree,tvb,4,4, "Delay = %u",tvb_get_ntohl(tvb,4));
|
|
|
|
proto_tree_add_text (tree,tvb,8,4, "Bandwidth = %u",tvb_get_ntohl(tvb,8));
|
|
|
|
proto_tree_add_text (tree,tvb,12,3,"MTU = %u",tvb_get_ntoh24(tvb,12));
|
|
|
|
proto_tree_add_text (tree,tvb,15,1,"Hop Count = %u",tvb_get_guint8(tvb,15));
|
|
|
|
proto_tree_add_text (tree,tvb,16,1,"Reliability = %u",tvb_get_guint8(tvb,16));
|
|
|
|
proto_tree_add_text (tree,tvb,17,1,"Load = %u",tvb_get_guint8(tvb,17));
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_tree_add_text (tree,tvb,18,2,"Reserved ");
|
2000-11-09 05:16:19 +00:00
|
|
|
length=tvb_get_guint8(tvb,20);
|
2004-03-06 03:25:10 +00:00
|
|
|
/* XXX - the EIGRP page whose URL appears at the top says this
|
|
|
|
field is 24 bits; what if the prefix length is > 24? */
|
|
|
|
addr_len=ipv4_addr_and_mask (tvb,21,ip_addr,length);
|
|
|
|
if (addr_len < 0) {
|
2004-03-06 02:20:55 +00:00
|
|
|
proto_tree_add_text (tree,tvb,20,1,"Prefix length = %u (invalid, must be <= 32)",length);
|
|
|
|
proto_item_append_text (ti," [Invalid prefix length %u > 32]",length);
|
|
|
|
} else {
|
|
|
|
proto_tree_add_text (tree,tvb,20,1,"Prefix Length = %u",length);
|
|
|
|
proto_tree_add_text (tree,tvb,21,addr_len,"Destination = %s",ip_to_str(ip_addr));
|
|
|
|
proto_item_append_text (ti," = %s/%u%s",ip_to_str(ip_addr),length,((tvb_get_ntohl(tvb,4)==0xffffffff)?" - Destination unreachable":""));
|
|
|
|
}
|
2000-11-09 05:16:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void dissect_eigrp_ip_ext (tvbuff_t *tvb, proto_tree *tree, proto_item *ti)
|
|
|
|
{
|
2004-03-06 03:25:10 +00:00
|
|
|
guint8 ip_addr[4],length;
|
|
|
|
int addr_len;
|
2004-03-06 02:20:55 +00:00
|
|
|
|
2000-11-09 05:16:19 +00:00
|
|
|
tvb_memcpy(tvb,ip_addr,0,4);
|
|
|
|
proto_tree_add_text (tree,tvb,0,4,"Next Hop = %s",ip_to_str(ip_addr));
|
|
|
|
tvb_memcpy(tvb,ip_addr,4,4);
|
|
|
|
proto_tree_add_text (tree,tvb,4,4,"Originating router = %s",ip_to_str(ip_addr));
|
|
|
|
proto_tree_add_text (tree,tvb,8,4,"Originating A.S. = %u",tvb_get_ntohl(tvb,8));
|
|
|
|
proto_tree_add_text (tree,tvb,12,4,"Arbitrary tag = %u",tvb_get_ntohl(tvb,12));
|
2002-08-28 21:04:11 +00:00
|
|
|
proto_tree_add_text (tree,tvb,16,4,"External protocol metric = %u",tvb_get_ntohl(tvb,16));
|
|
|
|
proto_tree_add_text (tree,tvb,20,2,"Reserved");
|
2000-11-09 05:16:19 +00:00
|
|
|
proto_tree_add_text (tree,tvb,22,1,"External protocol ID = %u (%s)",tvb_get_guint8(tvb,22),val_to_str(tvb_get_guint8(tvb,22),eigrp_pid_vals, "Unknown"));
|
|
|
|
proto_tree_add_text (tree,tvb,23,1,"Flags = 0x%0x",tvb_get_guint8(tvb,23));
|
|
|
|
|
|
|
|
proto_tree_add_text (tree,tvb,24,4,"Delay = %u",tvb_get_ntohl(tvb,24));
|
|
|
|
proto_tree_add_text (tree,tvb,28,4,"Bandwidth = %u",tvb_get_ntohl(tvb,28));
|
|
|
|
proto_tree_add_text (tree,tvb,32,3,"MTU = %u",tvb_get_ntoh24(tvb,32));
|
|
|
|
proto_tree_add_text (tree,tvb,35,1,"Hop Count = %u",tvb_get_guint8(tvb,35));
|
|
|
|
proto_tree_add_text (tree,tvb,36,1,"Reliability = %u",tvb_get_guint8(tvb,36));
|
|
|
|
proto_tree_add_text (tree,tvb,37,1,"Load = %u",tvb_get_guint8(tvb,37));
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_tree_add_text (tree,tvb,38,2,"Reserved ");
|
2000-11-09 05:16:19 +00:00
|
|
|
length=tvb_get_guint8(tvb,40);
|
2004-03-06 03:25:10 +00:00
|
|
|
/* XXX - the EIGRP page whose URL appears at the top says this
|
|
|
|
field is 24 bits; what if the prefix length is > 24? */
|
|
|
|
addr_len=ipv4_addr_and_mask (tvb,41,ip_addr,length);
|
|
|
|
if (addr_len < 0) {
|
2004-03-06 02:20:55 +00:00
|
|
|
proto_tree_add_text (tree,tvb,40,1,"Prefix length = %u (invalid, must be <= 32)",length);
|
|
|
|
proto_item_append_text (ti," [Invalid prefix length %u > 32]",length);
|
|
|
|
} else {
|
|
|
|
proto_tree_add_text (tree,tvb,40,1,"Prefix Length = %u",length);
|
|
|
|
proto_tree_add_text (tree,tvb,41,addr_len,"Destination = %s",ip_to_str(ip_addr));
|
|
|
|
proto_item_append_text (ti," = %s/%u%s",ip_to_str(ip_addr),length,((tvb_get_ntohl(tvb,4)==0xffffffff)?" - Destination unreachable":""));
|
|
|
|
}
|
2000-11-09 05:16:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static void dissect_eigrp_ipx_int (tvbuff_t *tvb, proto_tree *tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
proto_tree_add_text (tree,tvb,0,4,"Next Hop Address = %08x",tvb_get_ntohl(tvb,4));
|
|
|
|
proto_tree_add_text (tree,tvb,4,6,"Next Hop ID = %04x:%04x:%04x",tvb_get_ntohs(tvb,4),tvb_get_ntohs(tvb,6),tvb_get_ntohs(tvb,8));
|
|
|
|
proto_tree_add_text (tree,tvb,10,4,"Delay = %u",tvb_get_ntohl(tvb,10));
|
|
|
|
proto_tree_add_text (tree,tvb,14,4,"Bandwidth = %u",tvb_get_ntohl(tvb,14));
|
|
|
|
proto_tree_add_text (tree,tvb,18,3,"MTU = %u",tvb_get_ntoh24(tvb,18));
|
|
|
|
proto_tree_add_text (tree,tvb,21,1,"Hop Count = %u",tvb_get_guint8(tvb,21));
|
|
|
|
proto_tree_add_text (tree,tvb,22,1,"Reliability = %u",tvb_get_guint8(tvb,22));
|
|
|
|
proto_tree_add_text (tree,tvb,23,1,"Load = %u",tvb_get_guint8(tvb,23));
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_tree_add_text (tree,tvb,24,2,"Reserved ");
|
2002-08-28 21:04:11 +00:00
|
|
|
proto_tree_add_text (tree,tvb,26,4,"Destination Address = %08x",tvb_get_ntohl(tvb,26));
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_item_append_text (ti," = %08x%s",tvb_get_ntohl(tvb,26),((tvb_get_ntohl(tvb,10)==0xffffffff)?" - Destination unreachable":""));
|
2000-11-09 05:16:19 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static void dissect_eigrp_ipx_ext (tvbuff_t *tvb, proto_tree *tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
proto_tree_add_text (tree,tvb,0,4,"Next Hop Address = %08x",tvb_get_ntohl(tvb,4));
|
|
|
|
proto_tree_add_text (tree,tvb,4,6,"Next Hop ID = %04x:%04x:%04x",tvb_get_ntohs(tvb,4),tvb_get_ntohs(tvb,6),tvb_get_ntohs(tvb,8));
|
|
|
|
|
|
|
|
proto_tree_add_text (tree,tvb,10,6,"Originating router ID = %04x:%04x:%04x",tvb_get_ntohs(tvb,10),tvb_get_ntohs(tvb,12),tvb_get_ntohs(tvb,14));
|
|
|
|
proto_tree_add_text (tree,tvb,16,4,"Originating A.S. = %u",tvb_get_ntohl(tvb,16));
|
|
|
|
proto_tree_add_text (tree,tvb,20,4,"Arbitrary tag = %u",tvb_get_ntohl(tvb,20));
|
|
|
|
proto_tree_add_text (tree,tvb,24,1,"External protocol = %u",tvb_get_guint8(tvb,24));
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_tree_add_text (tree,tvb,25,1,"Reserved");
|
2002-08-28 21:04:11 +00:00
|
|
|
proto_tree_add_text (tree,tvb,26,2,"External metric = %u ",tvb_get_ntohs(tvb,26));
|
|
|
|
proto_tree_add_text (tree,tvb,28,2,"External delay = %u ",tvb_get_ntohs(tvb,28));
|
|
|
|
|
2000-11-09 05:16:19 +00:00
|
|
|
proto_tree_add_text (tree,tvb,30,4,"Delay = %u",tvb_get_ntohl(tvb,30));
|
|
|
|
proto_tree_add_text (tree,tvb,34,4,"Bandwidth = %u",tvb_get_ntohl(tvb,34));
|
|
|
|
proto_tree_add_text (tree,tvb,38,3,"MTU = %u",tvb_get_ntoh24(tvb,38));
|
|
|
|
proto_tree_add_text (tree,tvb,41,1,"Hop Count = %u",tvb_get_guint8(tvb,41));
|
|
|
|
proto_tree_add_text (tree,tvb,42,1,"Reliability = %u",tvb_get_guint8(tvb,42));
|
|
|
|
proto_tree_add_text (tree,tvb,43,1,"Load = %u",tvb_get_guint8(tvb,43));
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_tree_add_text (tree,tvb,44,2,"Reserved ");
|
2002-08-28 21:04:11 +00:00
|
|
|
proto_tree_add_text (tree,tvb,46,4,"Destination Address = %08x",tvb_get_ntohl(tvb,46));
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_item_append_text (ti," = %08x%s",tvb_get_ntohl(tvb,46),((tvb_get_ntohl(tvb,30)==0xffffffff)?" - Destination unreachable":""));
|
2000-11-09 05:16:19 +00:00
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
static void dissect_eigrp_at_cbl (tvbuff_t *tvb, proto_tree *tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
proto_tree_add_text (tree,tvb,0,4,"AppleTalk Cable Range = %u-%u",tvb_get_ntohs(tvb,0),tvb_get_ntohs(tvb,2));
|
|
|
|
proto_tree_add_text (tree,tvb,4,4,"AppleTalk Router ID = %u",tvb_get_ntohl(tvb,4));
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_item_append_text (ti,": Cable range= %u-%u, Router ID= %u",tvb_get_ntohs(tvb,0),tvb_get_ntohs(tvb,2),tvb_get_ntohl(tvb,4));
|
2000-11-09 05:16:19 +00:00
|
|
|
|
|
|
|
}
|
|
|
|
|
|
|
|
static void dissect_eigrp_at_int (tvbuff_t *tvb, proto_tree *tree, proto_item *ti)
|
|
|
|
{
|
|
|
|
proto_tree_add_text (tree,tvb,0,4,"Next Hop Address = %u.%u",tvb_get_ntohs(tvb,0),tvb_get_ntohs(tvb,2));
|
|
|
|
|
|
|
|
proto_tree_add_text (tree,tvb,4,4,"Delay = %u",tvb_get_ntohl(tvb,4));
|
|
|
|
proto_tree_add_text (tree,tvb,8,4,"Bandwidth = %u",tvb_get_ntohl(tvb,8));
|
|
|
|
proto_tree_add_text (tree,tvb,12,3,"MTU = %u",tvb_get_ntoh24(tvb,12));
|
|
|
|
proto_tree_add_text (tree,tvb,15,1,"Hop Count = %u",tvb_get_guint8(tvb,15));
|
|
|
|
proto_tree_add_text (tree,tvb,16,1,"Reliability = %u",tvb_get_guint8(tvb,16));
|
|
|
|
proto_tree_add_text (tree,tvb,17,1,"Load = %u",tvb_get_guint8(tvb,17));
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_tree_add_text (tree,tvb,18,2,"Reserved ");
|
2000-11-09 05:16:19 +00:00
|
|
|
proto_tree_add_text (tree,tvb,20,4,"Cable range = %u-%u",tvb_get_ntohs(tvb,20),tvb_get_ntohs(tvb,22));
|
|
|
|
|
2002-05-02 09:28:43 +00:00
|
|
|
proto_item_append_text (ti,": %u-%u",tvb_get_ntohs(tvb,20),tvb_get_ntohs(tvb,22));
|
2000-11-09 05:16:19 +00:00
|
|
|
|
|
|
|
}
|
|
|
|
|
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static void dissect_eigrp_at_ext (tvbuff_t *tvb, proto_tree *tree, proto_item *ti)
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{
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proto_tree_add_text (tree,tvb,0,4,"Next Hop Address = %u.%u",tvb_get_ntohs(tvb,0),tvb_get_ntohs(tvb,2));
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proto_tree_add_text (tree,tvb,4,4,"Originating router ID = %u",tvb_get_ntohl(tvb,4));
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proto_tree_add_text (tree,tvb,8,4,"Originating A.S. = %u",tvb_get_ntohl(tvb,8));
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proto_tree_add_text (tree,tvb,12,4,"Arbitrary tag = %u",tvb_get_ntohl(tvb,12));
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proto_tree_add_text (tree,tvb,16,1,"External protocol ID = %u ",tvb_get_guint8(tvb,16));
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proto_tree_add_text (tree,tvb,17,1,"Flags = 0x%0x",tvb_get_guint8(tvb,17));
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2002-08-28 21:04:11 +00:00
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proto_tree_add_text (tree,tvb,18,2,"External protocol metric = %u",tvb_get_ntohs(tvb,18));
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2000-11-09 05:16:19 +00:00
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proto_tree_add_text (tree,tvb,20,4,"Delay = %u",tvb_get_ntohl(tvb,20));
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proto_tree_add_text (tree,tvb,24,4,"Bandwidth = %u",tvb_get_ntohl(tvb,24));
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proto_tree_add_text (tree,tvb,28,3,"MTU = %u",tvb_get_ntoh24(tvb,28));
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proto_tree_add_text (tree,tvb,31,1,"Hop Count = %u",tvb_get_guint8(tvb,31));
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proto_tree_add_text (tree,tvb,32,1,"Reliability = %u",tvb_get_guint8(tvb,32));
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proto_tree_add_text (tree,tvb,33,1,"Load = %u",tvb_get_guint8(tvb,33));
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2002-05-02 09:28:43 +00:00
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proto_tree_add_text (tree,tvb,34,2,"Reserved ");
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2000-11-09 05:16:19 +00:00
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proto_tree_add_text (tree,tvb,36,4,"Cable range = %u-%u",tvb_get_ntohs(tvb,36),tvb_get_ntohs(tvb,38));
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2002-05-02 09:28:43 +00:00
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proto_item_append_text (ti,": %u-%u",tvb_get_ntohs(tvb,36),tvb_get_ntohs(tvb,38));
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2000-11-09 05:16:19 +00:00
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}
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2000-05-28 22:59:18 +00:00
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void
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proto_register_eigrp(void)
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2000-11-09 05:16:19 +00:00
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{
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static hf_register_info hf[] = {
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{ &hf_eigrp_opcode,
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{ "Opcode", "eigrp.opcode",
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FT_UINT8, BASE_DEC, NULL, 0x0 ,
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2001-06-18 02:18:27 +00:00
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"Opcode number", HFILL }
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2000-11-09 05:16:19 +00:00
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},
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{ &hf_eigrp_as,
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{ "Autonomous System ", "eigrp.as",
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FT_UINT16, BASE_DEC, NULL, 0x0 ,
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2001-06-18 02:18:27 +00:00
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"Autonomous System number", HFILL }
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2000-11-09 05:16:19 +00:00
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},
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{ &hf_eigrp_tlv,
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{ "Entry ", "eigrp.tlv",
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FT_UINT16, BASE_DEC, NULL, 0x0 ,
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2001-06-18 02:18:27 +00:00
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"Type/Length/Value", HFILL }
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2000-11-09 05:16:19 +00:00
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},
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};
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2002-08-28 21:04:11 +00:00
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2001-01-22 03:33:45 +00:00
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static gint *ett[] = {
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&ett_eigrp,
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&ett_tlv,
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};
|
2001-01-03 06:56:03 +00:00
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proto_eigrp = proto_register_protocol("Enhanced Interior Gateway Routing Protocol",
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"EIGRP", "eigrp");
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2000-11-09 05:16:19 +00:00
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proto_register_field_array(proto_eigrp, hf, array_length(hf));
|
2000-05-28 22:59:18 +00:00
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proto_register_subtree_array(ett, array_length(ett));
|
2001-01-22 03:33:45 +00:00
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}
|
2000-05-28 22:59:18 +00:00
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void
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proto_reg_handoff_eigrp(void)
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{
|
2001-12-03 04:00:26 +00:00
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dissector_handle_t eigrp_handle;
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|
2001-05-03 22:50:33 +00:00
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ipxsap_handle = find_dissector("ipxsap");
|
2001-12-03 04:00:26 +00:00
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eigrp_handle = create_dissector_handle(dissect_eigrp, proto_eigrp);
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dissector_add("ip.proto", IP_PROTO_EIGRP, eigrp_handle);
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dissector_add("ddp.type", DDP_EIGRP, eigrp_handle);
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dissector_add("ipx.socket", IPX_SOCKET_EIGRP, eigrp_handle);
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2000-05-28 22:59:18 +00:00
|
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}
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