1998-12-19 00:12:23 +00:00
|
|
|
/* packet-cdp.c
|
1999-01-06 23:07:42 +00:00
|
|
|
* Routines for the disassembly of the "Cisco Discovery Protocol"
|
1998-12-19 00:12:23 +00:00
|
|
|
* (c) Copyright Hannes R. Boehm <hannes@boehm.org>
|
|
|
|
*
|
Get rid of "proto_tree_add_notext()" - if you create a subtree using it,
but, before you set the text, you throw an exception while putting stuff
under the subtree, you end up with an absolutely blank protocol tree
item, which is really gross. Instead of calling
"proto_tree_add_notext()", call "proto_tree_add_text()" with at least a
minimal label - yes, it does mean you do some work that will probably be
unnecessary, but, absent a scheme to arrange to do that work if it *is*
necessary (e.g., catching exceptions), the alternative is an ugly
protocol tree display.
svn path=/trunk/; revision=3879
2001-08-28 08:28:19 +00:00
|
|
|
* $Id: packet-cdp.c,v 1.39 2001/08/28 08:28:14 guy Exp $
|
1998-12-19 00:12:23 +00:00
|
|
|
*
|
|
|
|
* Ethereal - Network traffic analyzer
|
Get rid of "proto_tree_add_notext()" - if you create a subtree using it,
but, before you set the text, you throw an exception while putting stuff
under the subtree, you end up with an absolutely blank protocol tree
item, which is really gross. Instead of calling
"proto_tree_add_notext()", call "proto_tree_add_text()" with at least a
minimal label - yes, it does mean you do some work that will probably be
unnecessary, but, absent a scheme to arrange to do that work if it *is*
necessary (e.g., catching exceptions), the alternative is an ugly
protocol tree display.
svn path=/trunk/; revision=3879
2001-08-28 08:28:19 +00:00
|
|
|
* By Gerald Combs <gerald@ethereal.com>
|
1998-12-19 00:12:23 +00:00
|
|
|
* Copyright 1998 Gerald Combs
|
|
|
|
*
|
|
|
|
* This program is free software; you can redistribute it and/or
|
|
|
|
* modify it under the terms of the GNU General Public License
|
|
|
|
* as published by the Free Software Foundation; either version 2
|
|
|
|
* of the License, or (at your option) any later version.
|
|
|
|
*
|
|
|
|
* This program is distributed in the hope that it will be useful,
|
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
* GNU General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU General Public License
|
|
|
|
* along with this program; if not, write to the Free Software
|
|
|
|
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include "config.h"
|
|
|
|
|
|
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
|
|
#include <sys/types.h>
|
|
|
|
#endif
|
|
|
|
|
1999-03-23 03:14:46 +00:00
|
|
|
#include <stdlib.h>
|
|
|
|
#include <string.h>
|
1998-12-19 00:12:23 +00:00
|
|
|
|
1999-03-23 03:14:46 +00:00
|
|
|
#include <glib.h>
|
1998-12-19 00:12:23 +00:00
|
|
|
#include "packet.h"
|
2000-11-13 07:19:37 +00:00
|
|
|
#include "strutil.h"
|
2000-01-13 00:41:11 +00:00
|
|
|
#include "nlpid.h"
|
|
|
|
|
|
|
|
/*
|
|
|
|
* See
|
|
|
|
*
|
|
|
|
* http://www.cisco.com/univercd/cc/td/doc/product/lan/trsrb/frames.htm
|
|
|
|
*
|
|
|
|
* for some information on CDP.
|
|
|
|
*/
|
1998-12-19 00:12:23 +00:00
|
|
|
|
1999-01-06 23:07:42 +00:00
|
|
|
/* Offsets in TLV structure. */
|
|
|
|
#define TLV_TYPE 0
|
|
|
|
#define TLV_LENGTH 2
|
|
|
|
|
1999-07-29 05:47:07 +00:00
|
|
|
static int proto_cdp = -1;
|
1999-10-16 14:27:00 +00:00
|
|
|
static int hf_cdp_version = -1;
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
static int hf_cdp_checksum = -1;
|
1999-10-16 14:27:00 +00:00
|
|
|
static int hf_cdp_ttl = -1;
|
1999-08-24 22:36:34 +00:00
|
|
|
static int hf_cdp_tlvtype = -1;
|
|
|
|
static int hf_cdp_tlvlength = -1;
|
1999-07-29 05:47:07 +00:00
|
|
|
|
1999-11-16 11:44:20 +00:00
|
|
|
static gint ett_cdp = -1;
|
|
|
|
static gint ett_cdp_tlv = -1;
|
2000-01-13 00:41:11 +00:00
|
|
|
static gint ett_cdp_address = -1;
|
|
|
|
static gint ett_cdp_capabilities = -1;
|
1999-11-16 11:44:20 +00:00
|
|
|
|
2000-01-13 00:41:11 +00:00
|
|
|
static int
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
dissect_address_tlv(tvbuff_t *tvb, int offset, int length, proto_tree *tree);
|
2000-01-13 00:41:11 +00:00
|
|
|
static void
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
dissect_capabilities(tvbuff_t *tvb, int offset, int length, proto_tree *tree);
|
1999-01-06 23:07:42 +00:00
|
|
|
static void
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
add_multi_line_string_to_tree(proto_tree *tree, tvbuff_t *tvb, gint start,
|
|
|
|
gint len, const gchar *prefix);
|
1999-01-04 20:07:29 +00:00
|
|
|
|
2000-01-13 00:41:11 +00:00
|
|
|
#define TYPE_DEVICE_ID 0x0001
|
|
|
|
#define TYPE_ADDRESS 0x0002
|
|
|
|
#define TYPE_PORT_ID 0x0003
|
|
|
|
#define TYPE_CAPABILITIES 0x0004
|
|
|
|
#define TYPE_IOS_VERSION 0x0005
|
|
|
|
#define TYPE_PLATFORM 0x0006
|
2001-01-05 19:14:05 +00:00
|
|
|
#define TYPE_IP_PREFIX 0x0007
|
1999-08-25 00:42:49 +00:00
|
|
|
|
2001-01-13 02:40:57 +00:00
|
|
|
#define TYPE_VTP_MGMT_DOMAIN 0x0009 /* Guessed, from tcpdump */
|
2001-01-15 21:36:53 +00:00
|
|
|
#define TYPE_NATIVE_VLAN 0x000a /* Guessed, from tcpdump */
|
|
|
|
#define TYPE_DUPLEX 0x000b /* Guessed, from tcpdump */
|
2001-01-13 02:40:57 +00:00
|
|
|
|
1999-08-25 00:42:49 +00:00
|
|
|
static const value_string type_vals[] = {
|
2001-01-13 02:40:57 +00:00
|
|
|
{ TYPE_DEVICE_ID, "Device ID" },
|
|
|
|
{ TYPE_ADDRESS, "Addresses" },
|
|
|
|
{ TYPE_PORT_ID, "Port ID" },
|
|
|
|
{ TYPE_CAPABILITIES, "Capabilities" },
|
|
|
|
{ TYPE_IOS_VERSION, "Software version" },
|
|
|
|
{ TYPE_PLATFORM, "Platform" },
|
|
|
|
{ TYPE_IP_PREFIX, "IP Prefix (used for ODR)" },
|
|
|
|
{ TYPE_VTP_MGMT_DOMAIN, "VTP Management Domain" },
|
2001-01-15 21:36:53 +00:00
|
|
|
{ TYPE_NATIVE_VLAN, "Native VLAN" },
|
|
|
|
{ TYPE_DUPLEX, "Duplex" },
|
2001-01-13 02:40:57 +00:00
|
|
|
{ 0, NULL },
|
1999-08-25 00:42:49 +00:00
|
|
|
};
|
|
|
|
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
static void
|
|
|
|
dissect_cdp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
|
2000-01-13 00:41:11 +00:00
|
|
|
{
|
1999-08-25 00:24:32 +00:00
|
|
|
proto_item *ti;
|
1999-03-23 03:14:46 +00:00
|
|
|
proto_tree *cdp_tree = NULL;
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
int offset = 0;
|
1999-08-25 00:24:32 +00:00
|
|
|
guint16 type;
|
|
|
|
guint16 length;
|
|
|
|
proto_item *tlvi;
|
|
|
|
proto_tree *tlv_tree;
|
2000-01-13 00:41:11 +00:00
|
|
|
int real_length;
|
|
|
|
guint32 naddresses;
|
|
|
|
int addr_length;
|
1998-12-19 00:12:23 +00:00
|
|
|
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
if (check_col(pinfo->fd, COL_PROTOCOL))
|
|
|
|
col_set_str(pinfo->fd, COL_PROTOCOL, "CDP");
|
|
|
|
if (check_col(pinfo->fd, COL_INFO))
|
|
|
|
col_set_str(pinfo->fd, COL_INFO, "Cisco Discovery Protocol");
|
|
|
|
|
|
|
|
if (tree){
|
|
|
|
ti = proto_tree_add_item(tree, proto_cdp, tvb, offset,
|
|
|
|
tvb_length_remaining(tvb, offset), FALSE);
|
1999-11-16 11:44:20 +00:00
|
|
|
cdp_tree = proto_item_add_subtree(ti, ett_cdp);
|
1999-01-04 20:07:29 +00:00
|
|
|
|
1999-01-06 23:07:42 +00:00
|
|
|
/* CDP header */
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_item(cdp_tree, hf_cdp_version, tvb, offset, 1, FALSE);
|
1999-08-25 00:24:32 +00:00
|
|
|
offset += 1;
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_uint_format(cdp_tree, hf_cdp_ttl, tvb, offset, 1,
|
|
|
|
tvb_get_guint8(tvb, offset),
|
|
|
|
"TTL: %u seconds",
|
|
|
|
tvb_get_guint8(tvb, offset));
|
2000-01-13 00:41:11 +00:00
|
|
|
offset += 1;
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_item(cdp_tree, hf_cdp_checksum, tvb, offset, 2, FALSE);
|
1999-08-25 00:24:32 +00:00
|
|
|
offset += 2;
|
1999-01-04 20:07:29 +00:00
|
|
|
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
while (tvb_reported_length_remaining(tvb, offset) != 0) {
|
|
|
|
type = tvb_get_ntohs(tvb, offset + TLV_TYPE);
|
|
|
|
length = tvb_get_ntohs(tvb, offset + TLV_LENGTH);
|
2001-06-20 05:18:36 +00:00
|
|
|
if (length < 4) {
|
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb, offset, 4,
|
|
|
|
"TLV with invalid length %u (< 4)",
|
|
|
|
length);
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
|
|
|
offset += 4;
|
|
|
|
break;
|
|
|
|
}
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
|
|
|
|
switch (type) {
|
|
|
|
|
|
|
|
case TYPE_DEVICE_ID:
|
|
|
|
/* Device ID */
|
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb, offset,
|
|
|
|
length, "Device ID: %.*s",
|
|
|
|
length - 4,
|
|
|
|
tvb_get_ptr(tvb, offset + 4, length - 4));
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
|
|
|
proto_tree_add_text(tlv_tree, tvb, offset + 4,
|
|
|
|
length - 4, "Device ID: %.*s",
|
|
|
|
length - 4,
|
|
|
|
tvb_get_ptr(tvb, offset + 4, length - 4));
|
|
|
|
offset += length;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case TYPE_ADDRESS:
|
|
|
|
/* Addresses */
|
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb, offset,
|
|
|
|
length, "Addresses");
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
|
|
|
offset += 4;
|
|
|
|
length -= 4;
|
|
|
|
naddresses = tvb_get_ntohl(tvb, offset);
|
|
|
|
proto_tree_add_text(tlv_tree, tvb, offset, 4,
|
|
|
|
"Number of addresses: %u", naddresses);
|
|
|
|
offset += 4;
|
|
|
|
length -= 4;
|
|
|
|
while (naddresses != 0) {
|
|
|
|
addr_length = dissect_address_tlv(tvb, offset, length,
|
|
|
|
tlv_tree);
|
|
|
|
if (addr_length < 0)
|
|
|
|
break;
|
|
|
|
offset += addr_length;
|
|
|
|
length -= addr_length;
|
|
|
|
|
|
|
|
naddresses--;
|
|
|
|
}
|
|
|
|
offset += length;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case TYPE_PORT_ID:
|
|
|
|
real_length = length;
|
|
|
|
if (tvb_get_guint8(tvb, offset + real_length) != 0x00) {
|
|
|
|
/* The length in the TLV doesn't appear to be the
|
|
|
|
length of the TLV, as the byte just past it
|
|
|
|
isn't the first byte of a 2-byte big-endian
|
|
|
|
small integer; make the length of the TLV the length
|
|
|
|
in the TLV, plus 4 bytes for the TLV type and length,
|
|
|
|
minus 1 because that's what makes one capture work. */
|
|
|
|
real_length = length + 3;
|
1999-01-04 20:07:29 +00:00
|
|
|
}
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb, offset,
|
|
|
|
real_length, "Port ID: %.*s",
|
|
|
|
real_length - 4,
|
|
|
|
tvb_get_ptr(tvb, offset + 4, real_length - 4));
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
|
|
|
proto_tree_add_text(tlv_tree, tvb, offset + 4,
|
|
|
|
real_length - 4,
|
|
|
|
"Sent through Interface: %.*s",
|
|
|
|
real_length - 4,
|
|
|
|
tvb_get_ptr(tvb, offset + 4, real_length - 4));
|
|
|
|
offset += real_length;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case TYPE_CAPABILITIES:
|
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb, offset,
|
|
|
|
length, "Capabilities");
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
|
|
|
offset += 4;
|
|
|
|
length -= 4;
|
|
|
|
dissect_capabilities(tvb, offset, length, tlv_tree);
|
|
|
|
offset += length;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case TYPE_IOS_VERSION:
|
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb, offset,
|
|
|
|
length, "Software Version");
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
|
|
|
add_multi_line_string_to_tree(tlv_tree, tvb, offset + 4,
|
|
|
|
length - 4, "Software Version: ");
|
|
|
|
offset += length;
|
|
|
|
break;
|
|
|
|
|
|
|
|
case TYPE_PLATFORM:
|
|
|
|
/* ??? platform */
|
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb,
|
|
|
|
offset, length, "Platform: %.*s",
|
|
|
|
length - 4,
|
|
|
|
tvb_get_ptr(tvb, offset + 4, length - 4));
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
|
|
|
proto_tree_add_text(tlv_tree, tvb, offset + 4,
|
|
|
|
length - 4, "Platform: %.*s",
|
|
|
|
length - 4,
|
|
|
|
tvb_get_ptr(tvb, offset + 4, length - 4));
|
|
|
|
offset += length;
|
|
|
|
break;
|
2001-01-05 19:14:05 +00:00
|
|
|
case TYPE_IP_PREFIX:
|
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb, offset,
|
|
|
|
length, "IP Prefixes: %d",length/5);
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
|
2001-01-05 19:14:05 +00:00
|
|
|
/* the actual number of prefixes is (length-4)/5
|
|
|
|
but if the variable is not a "float" but "integer"
|
|
|
|
then length/5=(length-4)/5 :) */
|
|
|
|
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
|
|
|
offset += 4;
|
|
|
|
length -= 4;
|
|
|
|
while (length > 0) {
|
|
|
|
proto_tree_add_text(tlv_tree, tvb, offset, 5,
|
|
|
|
"IP Prefix = %s/%u",
|
|
|
|
ip_to_str(tvb_get_ptr(tvb, offset, 4)),
|
|
|
|
tvb_get_guint8(tvb,offset+4));
|
|
|
|
offset += 5;
|
|
|
|
length -= 5;
|
|
|
|
}
|
|
|
|
break;
|
2001-01-13 02:40:57 +00:00
|
|
|
case TYPE_VTP_MGMT_DOMAIN:
|
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb,
|
|
|
|
offset, length, "VTP Management Domain: %.*s",
|
|
|
|
length - 4,
|
|
|
|
tvb_get_ptr(tvb, offset + 4, length - 4));
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
2001-01-15 21:36:53 +00:00
|
|
|
proto_tree_add_text(tlv_tree, tvb, offset + 4,
|
|
|
|
length - 4, "VTP Management Domain: %.*s",
|
|
|
|
length - 4,
|
|
|
|
tvb_get_ptr(tvb, offset + 4, length - 4));
|
|
|
|
offset += length;
|
|
|
|
break;
|
|
|
|
case TYPE_NATIVE_VLAN:
|
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb,
|
|
|
|
offset, length, "Native VLAN: %u",
|
|
|
|
tvb_get_ntohs(tvb, offset + 4));
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
|
|
|
proto_tree_add_text(tlv_tree, tvb, offset + 4,
|
|
|
|
length - 4, "Native VLAN: %u",
|
|
|
|
tvb_get_ntohs(tvb, offset + 4));
|
|
|
|
offset += length;
|
|
|
|
break;
|
|
|
|
case TYPE_DUPLEX:
|
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb,
|
|
|
|
offset, length, "Duplex: %s",
|
|
|
|
tvb_get_guint8(tvb, offset + 4) ?
|
|
|
|
"Full" : "Half" );
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
|
|
|
proto_tree_add_text(tlv_tree, tvb, offset + 4,
|
|
|
|
length - 4, "Duplex: %s",
|
|
|
|
tvb_get_guint8(tvb, offset + 4) ?
|
|
|
|
"Full" : "Half" );
|
2001-01-13 02:40:57 +00:00
|
|
|
offset += length;
|
|
|
|
break;
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
default:
|
|
|
|
tlvi = proto_tree_add_text(cdp_tree, tvb, offset,
|
|
|
|
length, "Type: %s, length: %u",
|
|
|
|
val_to_str(type, type_vals, "Unknown (0x%04x)"),
|
|
|
|
length);
|
|
|
|
tlv_tree = proto_item_add_subtree(tlvi, ett_cdp_tlv);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvtype, tvb,
|
|
|
|
offset + TLV_TYPE, 2, type);
|
|
|
|
proto_tree_add_uint(tlv_tree, hf_cdp_tlvlength, tvb,
|
|
|
|
offset + TLV_LENGTH, 2, length);
|
|
|
|
if (length > 4) {
|
|
|
|
proto_tree_add_text(tlv_tree, tvb, offset + 4,
|
|
|
|
length - 4, "Data");
|
|
|
|
} else
|
|
|
|
return;
|
|
|
|
offset += length;
|
|
|
|
}
|
1999-01-04 21:08:45 +00:00
|
|
|
}
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
dissect_data(tvb, offset, pinfo, cdp_tree);
|
1999-01-06 23:07:42 +00:00
|
|
|
}
|
1998-12-19 00:12:23 +00:00
|
|
|
}
|
|
|
|
|
2000-01-13 00:41:11 +00:00
|
|
|
#define PROTO_TYPE_NLPID 1
|
|
|
|
#define PROTO_TYPE_IEEE_802_2 2
|
|
|
|
|
|
|
|
static const value_string proto_type_vals[] = {
|
|
|
|
{ PROTO_TYPE_NLPID, "NLPID" },
|
|
|
|
{ PROTO_TYPE_IEEE_802_2, "802.2" },
|
|
|
|
{ 0, NULL },
|
|
|
|
};
|
|
|
|
|
|
|
|
static int
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
dissect_address_tlv(tvbuff_t *tvb, int offset, int length, proto_tree *tree)
|
2000-01-13 00:41:11 +00:00
|
|
|
{
|
|
|
|
proto_item *ti;
|
|
|
|
proto_tree *address_tree;
|
|
|
|
guint8 protocol_type;
|
|
|
|
guint8 protocol_length;
|
2000-01-22 04:59:55 +00:00
|
|
|
int nlpid;
|
2000-01-13 00:41:11 +00:00
|
|
|
char *protocol_str;
|
|
|
|
guint16 address_length;
|
|
|
|
char *address_type_str;
|
|
|
|
char *address_str;
|
|
|
|
|
|
|
|
if (length < 1)
|
|
|
|
return -1;
|
Get rid of "proto_tree_add_notext()" - if you create a subtree using it,
but, before you set the text, you throw an exception while putting stuff
under the subtree, you end up with an absolutely blank protocol tree
item, which is really gross. Instead of calling
"proto_tree_add_notext()", call "proto_tree_add_text()" with at least a
minimal label - yes, it does mean you do some work that will probably be
unnecessary, but, absent a scheme to arrange to do that work if it *is*
necessary (e.g., catching exceptions), the alternative is an ugly
protocol tree display.
svn path=/trunk/; revision=3879
2001-08-28 08:28:19 +00:00
|
|
|
ti = proto_tree_add_text(tree, tvb, offset, length, "Truncated address");
|
2000-01-22 04:59:55 +00:00
|
|
|
address_tree = proto_item_add_subtree(ti, ett_cdp_address);
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
protocol_type = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_text(address_tree, tvb, offset, 1, "Protocol type: %s",
|
2000-01-22 04:59:55 +00:00
|
|
|
val_to_str(protocol_type, proto_type_vals, "Unknown (0x%02x)"));
|
|
|
|
offset += 1;
|
|
|
|
length -= 1;
|
|
|
|
|
Get rid of "proto_tree_add_notext()" - if you create a subtree using it,
but, before you set the text, you throw an exception while putting stuff
under the subtree, you end up with an absolutely blank protocol tree
item, which is really gross. Instead of calling
"proto_tree_add_notext()", call "proto_tree_add_text()" with at least a
minimal label - yes, it does mean you do some work that will probably be
unnecessary, but, absent a scheme to arrange to do that work if it *is*
necessary (e.g., catching exceptions), the alternative is an ugly
protocol tree display.
svn path=/trunk/; revision=3879
2001-08-28 08:28:19 +00:00
|
|
|
if (length < 1)
|
2000-01-13 00:41:11 +00:00
|
|
|
return -1;
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
protocol_length = tvb_get_guint8(tvb, offset);
|
|
|
|
proto_tree_add_text(address_tree, tvb, offset, 1, "Protocol length: %u",
|
2000-01-22 04:59:55 +00:00
|
|
|
protocol_length);
|
|
|
|
offset += 1;
|
|
|
|
length -= 1;
|
2000-01-13 00:41:11 +00:00
|
|
|
|
2000-01-22 04:59:55 +00:00
|
|
|
if (length < protocol_length) {
|
2000-01-13 00:41:11 +00:00
|
|
|
if (length != 0) {
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_text(address_tree, tvb, offset, length,
|
|
|
|
"Protocol: %s (truncated)",
|
|
|
|
tvb_bytes_to_str(tvb, offset, length));
|
2000-01-13 00:41:11 +00:00
|
|
|
}
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
protocol_str = NULL;
|
2000-01-22 04:59:55 +00:00
|
|
|
if (protocol_type == PROTO_TYPE_NLPID && protocol_length == 1) {
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
nlpid = tvb_get_guint8(tvb, offset);
|
2000-01-22 04:59:55 +00:00
|
|
|
protocol_str = val_to_str(nlpid, nlpid_vals, "Unknown (0x%02x)");
|
|
|
|
} else
|
|
|
|
nlpid = -1;
|
2000-01-13 00:41:11 +00:00
|
|
|
if (protocol_str == NULL)
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
protocol_str = tvb_bytes_to_str(tvb, offset, protocol_length);
|
|
|
|
proto_tree_add_text(address_tree, tvb, offset, protocol_length,
|
2000-01-22 04:59:55 +00:00
|
|
|
"Protocol: %s", protocol_str);
|
|
|
|
offset += protocol_length;
|
|
|
|
length -= protocol_length;
|
2000-01-13 00:41:11 +00:00
|
|
|
|
Get rid of "proto_tree_add_notext()" - if you create a subtree using it,
but, before you set the text, you throw an exception while putting stuff
under the subtree, you end up with an absolutely blank protocol tree
item, which is really gross. Instead of calling
"proto_tree_add_notext()", call "proto_tree_add_text()" with at least a
minimal label - yes, it does mean you do some work that will probably be
unnecessary, but, absent a scheme to arrange to do that work if it *is*
necessary (e.g., catching exceptions), the alternative is an ugly
protocol tree display.
svn path=/trunk/; revision=3879
2001-08-28 08:28:19 +00:00
|
|
|
if (length < 2)
|
2000-01-13 00:41:11 +00:00
|
|
|
return -1;
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
address_length = tvb_get_ntohs(tvb, offset);
|
|
|
|
proto_tree_add_text(address_tree, tvb, offset, 2, "Address length: %u",
|
2000-01-22 04:59:55 +00:00
|
|
|
address_length);
|
|
|
|
offset += 2;
|
|
|
|
length -= 2;
|
2000-01-13 00:41:11 +00:00
|
|
|
|
2000-01-22 04:59:55 +00:00
|
|
|
if (length < address_length) {
|
2000-01-13 00:41:11 +00:00
|
|
|
if (length != 0) {
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_text(address_tree, tvb, offset, length,
|
|
|
|
"Address: %s (truncated)",
|
|
|
|
tvb_bytes_to_str(tvb, offset, length));
|
2000-01-13 00:41:11 +00:00
|
|
|
}
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
/* XXX - the Cisco document seems to be saying that, for 802.2-format
|
|
|
|
protocol types, 0xAAAA03 0x000000 0x0800 is IPv6, but 0x0800 is
|
|
|
|
the Ethernet protocol type for IPv4. */
|
|
|
|
length = 2 + protocol_length + 2 + address_length;
|
|
|
|
address_type_str = NULL;
|
|
|
|
address_str = NULL;
|
|
|
|
if (protocol_type == PROTO_TYPE_NLPID && protocol_length == 1) {
|
2000-01-22 04:59:55 +00:00
|
|
|
switch (nlpid) {
|
2000-01-13 00:41:11 +00:00
|
|
|
|
|
|
|
/* XXX - dissect NLPID_ISO8473_CLNP as OSI CLNP address? */
|
|
|
|
|
|
|
|
case NLPID_IP:
|
|
|
|
if (address_length == 4) {
|
|
|
|
/* The address is an IP address. */
|
|
|
|
address_type_str = "IP address";
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
address_str = ip_to_str(tvb_get_ptr(tvb, offset, 4));
|
2000-01-13 00:41:11 +00:00
|
|
|
}
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
if (address_type_str == NULL)
|
|
|
|
address_type_str = "Address";
|
|
|
|
if (address_str == NULL) {
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
address_str = tvb_bytes_to_str(tvb, offset, address_length);
|
2000-01-13 00:41:11 +00:00
|
|
|
}
|
2000-01-22 04:59:55 +00:00
|
|
|
proto_item_set_text(ti, "%s: %s", address_type_str, address_str);
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_text(address_tree, tvb, offset, address_length, "%s: %s",
|
2000-01-13 00:41:11 +00:00
|
|
|
address_type_str, address_str);
|
|
|
|
return 2 + protocol_length + 2 + address_length;
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
dissect_capabilities(tvbuff_t *tvb, int offset, int length, proto_tree *tree)
|
2000-01-13 00:41:11 +00:00
|
|
|
{
|
|
|
|
proto_item *ti;
|
|
|
|
proto_tree *capabilities_tree;
|
|
|
|
guint32 capabilities;
|
|
|
|
|
|
|
|
if (length < 4)
|
|
|
|
return;
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
capabilities = tvb_get_ntohl(tvb, offset);
|
|
|
|
ti = proto_tree_add_text(tree, tvb, offset, length, "Capabilities: 0x%08x",
|
2000-01-13 00:41:11 +00:00
|
|
|
capabilities);
|
|
|
|
capabilities_tree = proto_item_add_subtree(ti, ett_cdp_capabilities);
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_text(capabilities_tree, tvb, offset, 4,
|
2000-01-13 00:41:11 +00:00
|
|
|
decode_boolean_bitfield(capabilities, 0x01, 4*8,
|
|
|
|
"Performs level 3 routing",
|
|
|
|
"Doesn't perform level 3 routing"));
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_text(capabilities_tree, tvb, offset, 4,
|
2000-01-13 00:41:11 +00:00
|
|
|
decode_boolean_bitfield(capabilities, 0x02, 4*8,
|
|
|
|
"Performs level 2 transparent bridging",
|
|
|
|
"Doesn't perform level 2 transparent bridging"));
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_text(capabilities_tree, tvb, offset, 4,
|
2000-01-13 00:41:11 +00:00
|
|
|
decode_boolean_bitfield(capabilities, 0x04, 4*8,
|
|
|
|
"Performs level 2 source-route bridging",
|
|
|
|
"Doesn't perform level 2 source-route bridging"));
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_text(capabilities_tree, tvb, offset, 4,
|
2000-01-13 00:41:11 +00:00
|
|
|
decode_boolean_bitfield(capabilities, 0x08, 4*8,
|
|
|
|
"Performs level 2 switching",
|
|
|
|
"Doesn't perform level 2 switching"));
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_text(capabilities_tree, tvb, offset, 4,
|
2000-01-13 00:41:11 +00:00
|
|
|
decode_boolean_bitfield(capabilities, 0x10, 4*8,
|
|
|
|
"Sends and receives packets for network-layer protocols",
|
|
|
|
"Doesn't send or receive packets for network-layer protocols"));
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_text(capabilities_tree, tvb, offset, 4,
|
2000-01-13 00:41:11 +00:00
|
|
|
decode_boolean_bitfield(capabilities, 0x20, 4*8,
|
|
|
|
"Doesn't forward IGMP Report packets on nonrouter ports",
|
|
|
|
"Forwards IGMP Report packets on nonrouter ports"));
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
proto_tree_add_text(capabilities_tree, tvb, offset, 4,
|
2000-01-13 00:41:11 +00:00
|
|
|
decode_boolean_bitfield(capabilities, 0x40, 4*8,
|
|
|
|
"Provides level 1 functionality",
|
|
|
|
"Doesn't provide level 1 functionality"));
|
|
|
|
}
|
|
|
|
|
1999-01-06 23:07:42 +00:00
|
|
|
static void
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
add_multi_line_string_to_tree(proto_tree *tree, tvbuff_t *tvb, gint start,
|
|
|
|
gint len, const gchar *prefix)
|
1999-01-06 23:07:42 +00:00
|
|
|
{
|
|
|
|
int prefix_len;
|
|
|
|
int i;
|
|
|
|
char blanks[64+1];
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
gint next;
|
1999-01-06 23:07:42 +00:00
|
|
|
int line_len;
|
|
|
|
int data_len;
|
|
|
|
|
|
|
|
prefix_len = strlen(prefix);
|
|
|
|
if (prefix_len > 64)
|
|
|
|
prefix_len = 64;
|
|
|
|
for (i = 0; i < prefix_len; i++)
|
|
|
|
blanks[i] = ' ';
|
|
|
|
blanks[i] = '\0';
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
while (len > 0) {
|
|
|
|
line_len = tvb_find_line_end(tvb, start, len, &next);
|
|
|
|
data_len = next - start;
|
|
|
|
proto_tree_add_text(tree, tvb, start, data_len, "%s%.*s", prefix,
|
|
|
|
line_len, tvb_get_ptr(tvb, start, line_len));
|
1999-01-06 23:07:42 +00:00
|
|
|
start += data_len;
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
|
|
len -= data_len;
|
1999-01-06 23:07:42 +00:00
|
|
|
prefix = blanks;
|
|
|
|
}
|
|
|
|
}
|
1999-07-29 05:47:07 +00:00
|
|
|
|
|
|
|
void
|
|
|
|
proto_register_cdp(void)
|
|
|
|
{
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
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static hf_register_info hf[] = {
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{ &hf_cdp_version,
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{ "Version", "cdp.version", FT_UINT8, BASE_DEC, NULL, 0x0,
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2001-06-18 02:18:27 +00:00
|
|
|
"", HFILL }},
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
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{ &hf_cdp_ttl,
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{ "TTL", "cdp.ttl", FT_UINT16, BASE_DEC, NULL, 0x0,
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2001-06-18 02:18:27 +00:00
|
|
|
"", HFILL }},
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
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{ &hf_cdp_checksum,
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{ "Checksum", "cdp.checksum", FT_UINT16, BASE_HEX, NULL, 0x0,
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2001-06-18 02:18:27 +00:00
|
|
|
"", HFILL }},
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
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{ &hf_cdp_tlvtype,
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{ "Type", "cdp.tlv.type", FT_UINT16, BASE_HEX, VALS(type_vals), 0x0,
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2001-06-18 02:18:27 +00:00
|
|
|
"", HFILL }},
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
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{ &hf_cdp_tlvlength,
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{ "Length", "cdp.tlv.len", FT_UINT16, BASE_DEC, NULL, 0x0,
|
2001-06-18 02:18:27 +00:00
|
|
|
"", HFILL }},
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
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|
};
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|
static gint *ett[] = {
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&ett_cdp,
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&ett_cdp_tlv,
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&ett_cdp_address,
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&ett_cdp_capabilities,
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};
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2001-01-03 06:56:03 +00:00
|
|
|
proto_cdp = proto_register_protocol("Cisco Discovery Protocol",
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|
|
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"CDP", "cdp");
|
Tvbuffify the CDP, CGMP, ISL, and VTP dissectors.
Add a new subdissector table in the LLC dissector for protocol IDs with
a Cisco OUI, and register the CDP, CGMP, and VTMP dissectors in that
table, rather than calling them via a switch statement.
Register the ISL dissector by name, and have the Ethernet dissector call
it via a handle.
Fix the handling of the checksum field in the CDP dissector.
The strings in CDP are counted, not null-terminated; treat them as such.
Fix the handling of the encapsulated frame CRC, and the encapsulated
frame, in the ISL dissector, at least for Ethernet frames; it may not be
correct for encapsulated Token Ring frames.
svn path=/trunk/; revision=2792
2000-12-28 09:49:09 +00:00
|
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|
proto_register_field_array(proto_cdp, hf, array_length(hf));
|
|
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proto_register_subtree_array(ett, array_length(ett));
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}
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|
void
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proto_reg_handoff_cdp(void)
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{
|
2001-01-09 06:32:10 +00:00
|
|
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dissector_add("llc.cisco_pid", 0x2000, dissect_cdp, proto_cdp);
|
Add a new Wiretap encapsulation type for Cisco HDLC. Map the NetBSD
DLT_HDLC to it.
Make a separate dissector for Cisco HDLC, and add a dissector for Cisco
SLARP. Have the PPP dissector call the Cisco HDLC dissector if the
address field is the Cisco HDLC unicast or multicast address. Use the
Cisco HDLC dissector for the Cisco HDLC Wiretap encapsulation type.
Add a new dissector table "chdlctype", for Cisco HDLC packet types
(they're *almost* the same as Ethernet types, but 0x8035 is SLARP, not
Reverse ARP, and 0x2000 is the Cisco Discovery protocol, for example),
replacing "fr.chdlc".
Have a "chdlctype()" routine, similar to "ethertype()", used both by the
Cisco HDLC and Frame Relay dissectors. Have a "chdlc_vals[]"
"value_string" table for Cisco HDLC types and protocol names. Split the
packet type field in the Frame Relay dissector into separate SNAP and
Cisco HDLC fields, and give them the Ethernet type and Cisco HDLC type
"value_string" tables, respectively.
svn path=/trunk/; revision=3133
2001-03-15 09:11:03 +00:00
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|
dissector_add("chdlctype", 0x2000, dissect_cdp, proto_cdp);
|
1999-07-29 05:47:07 +00:00
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|
}
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