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wireshark/epan/dissectors/packet-cdp.c
Michael Mann 1e60d63c8c Create call_data_dissector() to call data dissector. 
This saves many dissectors the need to find the data dissector and store a handle to it.

There were also some that were finding it, but not using it.
For others this was the only reason for their handoff function, so it could be eliminated.

Change-Id: I5d3f951ee1daa3d30c060d21bd12bbc881a8027b
Reviewed-on: https://code.wireshark.org/review/14530
Petri-Dish: Michael Mann <mmann78@netscape.net>
Reviewed-by: Michael Mann <mmann78@netscape.net>
2016-03-20 17:38:03 +00:00

1493 lines
73 KiB
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/* packet-cdp.c
* Routines for the disassembly of the "Cisco Discovery Protocol"
* (c) Copyright Hannes R. Boehm <hannes@boehm.org>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/expert.h>
#include <epan/to_str.h>
#include <epan/in_cksum.h>
#include <epan/oui.h>
#include <epan/nlpid.h>
/*
* See
*
* http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/cdp/configuration/15-mt/cdp-15-mt-book/nm-cdp-discover.html#GUID-84FBA50B-677C-4D90-AF56-2FB96F2DC085
*
* and
*
* http://www.cisco.com/c/en/us/support/docs/switches/catalyst-4500-series-switches/13414-103.html#cdp
*
* for some more information on CDP version 2 (a superset of version 1).
*/
void proto_register_cdp(void);
void proto_reg_handoff_cdp(void);
/* Offsets in TLV structure. */
#define TLV_TYPE 0
#define TLV_LENGTH 2
static int proto_cdp = -1;
static int hf_cdp_version = -1;
static int hf_cdp_checksum = -1;
static int hf_cdp_checksum_good = -1;
static int hf_cdp_checksum_bad = -1;
static int hf_cdp_ttl = -1;
static int hf_cdp_tlvtype = -1;
static int hf_cdp_tlvlength = -1;
static int hf_cdp_nrgyz_tlvtype = -1;
static int hf_cdp_nrgyz_tlvlength = -1;
static int hf_cdp_deviceid = -1;
static int hf_cdp_platform = -1;
static int hf_cdp_portid = -1;
static int hf_cdp_capabilities = -1;
static int hf_cdp_capabilities_router = -1;
static int hf_cdp_capabilities_trans_bridge = -1;
static int hf_cdp_capabilities_src_bridge = -1;
static int hf_cdp_capabilities_switch = -1;
static int hf_cdp_capabilities_host = -1;
static int hf_cdp_capabilities_igmp_capable = -1;
static int hf_cdp_capabilities_repeater = -1;
static int hf_cdp_spare_poe_tlv = -1;
static int hf_cdp_spare_poe_tlv_poe = -1;
static int hf_cdp_spare_poe_tlv_spare_pair_arch = -1;
static int hf_cdp_spare_poe_tlv_req_spare_pair_poe = -1;
static int hf_cdp_spare_poe_tlv_pse_spare_pair_poe = -1;
/* Generated from convert_proto_tree_add_text.pl */
static int hf_cdp_num_tlvs_table = -1;
static int hf_cdp_encrypted_data = -1;
static int hf_cdp_cluster_ip = -1;
static int hf_cdp_nrgyz_reply_to_backup_server_ip = -1;
static int hf_cdp_nrgyz_reply_to_port = -1;
static int hf_cdp_unknown_pad = -1;
static int hf_cdp_cluster_version = -1;
static int hf_cdp_hello_unknown = -1;
static int hf_cdp_management_id = -1;
static int hf_cdp_data = -1;
static int hf_cdp_nrgyz_reply_to_ip_address = -1;
static int hf_cdp_nrgyz_reply_to_name = -1;
static int hf_cdp_nrgyz_reply_to_domain = -1;
static int hf_cdp_nrgyz_reply_to_role = -1;
static int hf_cdp_nrgyz_ip_address = -1;
static int hf_cdp_model_number = -1;
static int hf_cdp_nrgyz_reply_to_unknown_field = -1;
static int hf_cdp_len_tlv_table = -1;
static int hf_cdp_vtp_management_domain = -1;
static int hf_cdp_hardware_version_id = -1;
static int hf_cdp_cluster_unknown = -1;
static int hf_cdp_native_vlan = -1;
static int hf_cdp_ip_prefix = -1;
static int hf_cdp_odr_default_gateway = -1;
static int hf_cdp_power_consumption = -1;
static int hf_cdp_cluster_status = -1;
static int hf_cdp_power_requested = -1;
static int hf_cdp_trust_bitmap = -1;
static int hf_cdp_seen_sequence = -1;
static int hf_cdp_system_name = -1;
static int hf_cdp_power_available = -1;
static int hf_cdp_cluster_commander_mac = -1;
static int hf_cdp_mtu = -1;
static int hf_cdp_protocol_length = -1;
static int hf_cdp_system_serial_number = -1;
static int hf_cdp_sequence_number = -1;
static int hf_cdp_duplex = -1;
static int hf_cdp_voice_vlan = -1;
static int hf_cdp_request_id = -1;
static int hf_cdp_cluster_sub_version = -1;
static int hf_cdp_oui = -1;
static int hf_cdp_nrgyz_reply_to_backup_server_port = -1;
static int hf_cdp_cluster_master_ip = -1;
static int hf_cdp_protocol = -1;
static int hf_cdp_protocol_type = -1;
static int hf_cdp_address = -1;
static int hf_cdp_system_object_identifier = -1;
static int hf_cdp_location_unknown = -1;
static int hf_cdp_nrgyz_unknown_values = -1;
static int hf_cdp_address_length = -1;
static int hf_cdp_protocol_id = -1;
static int hf_cdp_cluster_switch_mac = -1;
static int hf_cdp_location = -1;
static int hf_cdp_untrusted_port_cos = -1;
static int hf_cdp_number_of_addresses = -1;
static int hf_cdp_cluster_management_vlan = -1;
static int hf_cdp_software_version = -1;
static gint ett_cdp = -1;
static gint ett_cdp_tlv = -1;
static gint ett_cdp_nrgyz_tlv = -1;
static gint ett_cdp_address = -1;
static gint ett_cdp_capabilities = -1;
static gint ett_cdp_spare_poe_tlv = -1;
static gint ett_cdp_checksum = -1;
static expert_field ei_cdp_invalid_data = EI_INIT;
static expert_field ei_cdp_nrgyz_tlvlength = EI_INIT;
static int
dissect_address_tlv(tvbuff_t *tvb, int offset, int length, proto_tree *tree);
static void
dissect_capabilities(tvbuff_t *tvb, int offset, int length, proto_tree *tree);
static void
dissect_nrgyz_tlv(tvbuff_t *tvb, packet_info* pinfo, int offset, guint16 length, guint16 num,
proto_tree *tree);
static void
dissect_spare_poe_tlv(tvbuff_t *tvb, int offset, int length, proto_tree *tree);
static void
add_multi_line_string_to_tree(proto_tree *tree, tvbuff_t *tvb, gint start,
gint len, int hf);
#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
#define TYPE_IP_PREFIX 0x0007
#define TYPE_PROTOCOL_HELLO 0x0008 /* Protocol Hello */
#define TYPE_VTP_MGMT_DOMAIN 0x0009 /* VTP Domain, CTPv2 - see second URL */
#define TYPE_NATIVE_VLAN 0x000a /* Native VLAN, CTPv2 - see second URL */
#define TYPE_DUPLEX 0x000b /* Full/Half Duplex - see second URL */
/* 0x000c */
/* 0x000d */
#define TYPE_VOIP_VLAN_REPLY 0x000e /* VoIP VLAN reply */
#define TYPE_VOIP_VLAN_QUERY 0x000f /* VoIP VLAN query */
#define TYPE_POWER 0x0010 /* Power consumption */
#define TYPE_MTU 0x0011 /* MTU */
#define TYPE_TRUST_BITMAP 0x0012 /* Trust bitmap */
#define TYPE_UNTRUSTED_COS 0x0013 /* Untrusted port CoS */
#define TYPE_SYSTEM_NAME 0x0014 /* System Name */
#define TYPE_SYSTEM_OID 0x0015 /* System OID */
#define TYPE_MANAGEMENT_ADDR 0x0016 /* Management Address(es) */
#define TYPE_LOCATION 0x0017 /* Location */
#define TYPE_EXT_PORT_ID 0x0018 /* External Port-ID */
#define TYPE_POWER_REQUESTED 0x0019 /* Power Requested */
#define TYPE_POWER_AVAILABLE 0x001a /* Power Available */
#define TYPE_PORT_UNIDIR 0x001b /* Port Unidirectional */
#define TYPE_NRGYZ 0x001d /* EnergyWise over CDP */
#define TYPE_SPARE_POE 0x001f /* Spare Pair PoE */
#define TYPE_HP_BSSID 0x1000 /* BSSID */
#define TYPE_HP_SERIAL 0x1001 /* Serial number */
#define TYPE_HP_SSID 0x1002 /* SSID */
#define TYPE_HP_RADIO1_CH 0x1003 /* Radio1 channel */
/* 0x1004 */
/* 0x1005 */
#define TYPE_HP_SNMP_PORT 0x1006 /* SNMP listening UDP port */
#define TYPE_HP_MGMT_PORT 0x1007 /* Web interface TCP port */
#define TYPE_HP_SOURCE_MAC 0x1008 /* Sender MAC address for the AP, bouth wired and wireless */
#define TYPE_HP_RADIO2_CH 0x1009 /* Radio2 channel */
#define TYPE_HP_RADIO1_OMODE 0x100A /* Radio1 Operating mode */
#define TYPE_HP_RADIO2_OMODE 0x100B /* Radio2 Operating mode */
#define TYPE_HP_RADIO1_RMODE 0x100C /* Radio1 Radio mode */
#define TYPE_HP_RADIO2_RMODE 0x100D /* Radio2 Radio mode */
static const value_string type_vals[] = {
{ 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/Gateway (used for ODR)" },
{ TYPE_PROTOCOL_HELLO, "Protocol Hello" },
{ TYPE_VTP_MGMT_DOMAIN, "VTP Management Domain" },
{ TYPE_NATIVE_VLAN, "Native VLAN" },
{ TYPE_DUPLEX, "Duplex" },
{ TYPE_VOIP_VLAN_REPLY, "VoIP VLAN Reply" },
{ TYPE_VOIP_VLAN_QUERY, "VoIP VLAN Query" },
{ TYPE_POWER, "Power consumption" },
{ TYPE_MTU, "MTU"},
{ TYPE_TRUST_BITMAP, "Trust Bitmap" },
{ TYPE_UNTRUSTED_COS, "Untrusted Port CoS" },
{ TYPE_SYSTEM_NAME, "System Name" },
{ TYPE_SYSTEM_OID, "System Object ID" },
{ TYPE_MANAGEMENT_ADDR, "Management Address" },
{ TYPE_LOCATION, "Location" },
{ TYPE_EXT_PORT_ID, "External Port-ID" },
{ TYPE_POWER_REQUESTED, "Power Requested" },
{ TYPE_POWER_AVAILABLE, "Power Available" },
{ TYPE_PORT_UNIDIR, "Port Unidirectional" },
{ TYPE_NRGYZ, "EnergyWise" },
{ TYPE_SPARE_POE, "Spare PoE" },
{ TYPE_HP_BSSID, "BSSID" },
{ TYPE_HP_SERIAL, "Serial number" },
{ TYPE_HP_SSID, "SSID" },
{ TYPE_HP_RADIO1_CH, "Radio1 channel" },
{ TYPE_HP_SNMP_PORT, "SNMP UDP port" },
{ TYPE_HP_MGMT_PORT, "Web TCP port" },
{ TYPE_HP_SOURCE_MAC, "Source MAC address" },
{ TYPE_HP_RADIO2_CH, "Radio2 channel" },
{ TYPE_HP_RADIO1_OMODE, "Radio1 Operating mode" },
{ TYPE_HP_RADIO2_OMODE, "Radio2 Operating mode" },
{ TYPE_HP_RADIO1_RMODE, "Radio1 Radio mode" },
{ TYPE_HP_RADIO2_RMODE, "Radio2 Radio mode" },
{ 0, NULL }
};
#define TYPE_HELLO_CLUSTER_MGMT 0x0112
static const value_string type_hello_vals[] = {
{ TYPE_HELLO_CLUSTER_MGMT, "Cluster Management" },
{ 0, NULL }
};
#define TYPE_NRGYZ_ROLE 0x00000007
#define TYPE_NRGYZ_DOMAIN 0x00000008
#define TYPE_NRGYZ_NAME 0x00000009
#define TYPE_NRGYZ_REPLYTO 0x00000017
static const value_string type_nrgyz_vals[] = {
{ TYPE_NRGYZ_ROLE, "Role" },
{ TYPE_NRGYZ_DOMAIN, "Domain" },
{ TYPE_NRGYZ_NAME, "Name" },
{ TYPE_NRGYZ_REPLYTO, "Reply To" },
{ 0, NULL }
};
static int
dissect_cdp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_item *ti, *checksum_item;
proto_tree *cdp_tree = NULL, *checksum_tree;
int offset = 0;
guint16 type;
guint16 length, packet_checksum, computed_checksum, data_length;
gboolean checksum_good, checksum_bad;
proto_item *tlvi = NULL;
proto_tree *tlv_tree = NULL;
int real_length;
guint32 naddresses;
guint32 power_avail_len, power_avail;
guint32 power_req_len, power_req;
int addr_length;
vec_t cksum_vec[1];
col_set_str(pinfo->cinfo, COL_PROTOCOL, "CDP");
col_clear(pinfo->cinfo, COL_INFO);
if (tree) {
ti = proto_tree_add_item(tree, proto_cdp, tvb, offset, -1, ENC_NA);
cdp_tree = proto_item_add_subtree(ti, ett_cdp);
/* CDP header */
proto_tree_add_item(cdp_tree, hf_cdp_version, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
proto_tree_add_uint_format_value(cdp_tree, hf_cdp_ttl, tvb, offset, 1,
tvb_get_guint8(tvb, offset),
"%u seconds",
tvb_get_guint8(tvb, offset));
offset += 1;
} else {
offset += 2; /* The version/ttl fields from above */
}
/* Checksum display & verification code */
packet_checksum = tvb_get_ntohs(tvb, offset);
data_length = tvb_reported_length(tvb);
/* CDP doesn't adhere to RFC 1071 section 2. (B). It incorrectly assumes
* checksums are calculated on a big endian platform, therefore i.s.o.
* padding odd sized data with a zero byte _at the end_ it sets the last
* big endian _word_ to contain the last network _octet_. This byteswap
* has to be done on the last octet of network data before feeding it to
* the Internet checksum routine.
* CDP checksumming code has a bug in the addition of this last _word_
* as a signed number into the long word intermediate checksum. When
* reducing this long to word size checksum an off-by-one error can be
* made. This off-by-one error is compensated for in the last _word_ of
* the network data.
*/
if (data_length & 1) {
guint8 *padded_buffer;
/* Allocate new buffer */
padded_buffer = (guint8 *)wmem_alloc(wmem_packet_scope(), data_length+1);
tvb_memcpy(tvb, padded_buffer, 0, data_length);
/* Swap bytes in last word */
padded_buffer[data_length] = padded_buffer[data_length-1];
padded_buffer[data_length-1] = 0;
/* Compensate off-by-one error */
if (padded_buffer[data_length] & 0x80) {
padded_buffer[data_length]--;
padded_buffer[data_length-1]--;
}
/* Setup checksum routine data buffer */
SET_CKSUM_VEC_PTR(cksum_vec[0], padded_buffer, data_length+1);
} else {
/* Setup checksum routine data buffer */
SET_CKSUM_VEC_TVB(cksum_vec[0], tvb, 0, data_length);
}
computed_checksum = in_cksum(cksum_vec, 1);
checksum_good = (computed_checksum == 0);
checksum_bad = !checksum_good;
if (checksum_good) {
checksum_item = proto_tree_add_uint_format_value(cdp_tree,
hf_cdp_checksum, tvb, offset, 2, packet_checksum,
"0x%04x [correct]", packet_checksum);
} else {
checksum_item = proto_tree_add_uint_format_value(cdp_tree,
hf_cdp_checksum, tvb, offset, 2, packet_checksum,
"0x%04x [incorrect, should be 0x%04x]",
packet_checksum,
in_cksum_shouldbe(packet_checksum, computed_checksum));
}
checksum_tree = proto_item_add_subtree(checksum_item, ett_cdp_checksum);
checksum_item = proto_tree_add_boolean(checksum_tree, hf_cdp_checksum_good,
tvb, offset, 2, checksum_good);
PROTO_ITEM_SET_GENERATED(checksum_item);
checksum_item = proto_tree_add_boolean(checksum_tree, hf_cdp_checksum_bad,
tvb, offset, 2, checksum_bad);
PROTO_ITEM_SET_GENERATED(checksum_item);
offset += 2;
while (tvb_reported_length_remaining(tvb, offset) != 0) {
type = tvb_get_ntohs(tvb, offset + TLV_TYPE);
length = tvb_get_ntohs(tvb, offset + TLV_LENGTH);
if (length < 4) {
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset, 4,
ett_cdp_tlv, NULL, "TLV with invalid length %u (< 4)",
length);
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
}
offset += 4;
break;
}
switch (type) {
case TYPE_DEVICE_ID:
/* Device ID */
col_append_fstr(pinfo->cinfo, COL_INFO,
"Device ID: %s ",
tvb_format_stringzpad(tvb, offset + 4, length - 4));
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset,
length, ett_cdp_tlv, NULL, "Device ID: %s",
tvb_format_stringzpad(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_deviceid, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
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;
}
col_append_fstr(pinfo->cinfo, COL_INFO,
"Port ID: %s ",
tvb_format_stringzpad(tvb, offset + 4,
length - 4));
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset,
real_length, ett_cdp_tlv, NULL, "Port ID: %s",
tvb_format_text(tvb, offset + 4, real_length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_portid, tvb, offset + 4, real_length - 4, ENC_ASCII|ENC_NA);
}
offset += real_length;
break;
case TYPE_ADDRESS:
/* Addresses */
if (tree) {
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset,
length, ett_cdp_tlv, NULL, "Addresses");
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
}
offset += 4;
length -= 4;
naddresses = tvb_get_ntohl(tvb, offset);
proto_tree_add_item(tlv_tree, hf_cdp_number_of_addresses, tvb, offset, 4, ENC_BIG_ENDIAN);
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_CAPABILITIES:
if (tree) {
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset,
length, ett_cdp_tlv, NULL, "Capabilities");
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
}
offset += 4;
length -= 4;
dissect_capabilities(tvb, offset, length, tlv_tree);
offset += length;
break;
case TYPE_IOS_VERSION:
if (tree) {
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset,
length, ett_cdp_tlv, NULL, "Software Version");
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
add_multi_line_string_to_tree(tlv_tree, tvb, offset + 4,
length - 4, hf_cdp_software_version);
}
offset += length;
break;
case TYPE_PLATFORM:
/* ??? platform */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Platform: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
case TYPE_IP_PREFIX:
if (length == 8) {
/* if length is 8 then this is default gw not prefix */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset,
length, ett_cdp_tlv, NULL, "ODR Default gateway: %s",
tvb_ip_to_str(tvb, offset+4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_odr_default_gateway, tvb, offset+4, 4, ENC_BIG_ENDIAN);
}
offset += 8;
} else {
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset,
length, ett_cdp_tlv, NULL, "IP Prefixes: %d",length/5);
/* 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 :) */
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
}
offset += 4;
length -= 4;
while (length > 0) {
proto_tree_add_ipv4_format_value(tlv_tree, hf_cdp_ip_prefix, tvb, offset, 5, tvb_get_ntohl(tvb, offset),
"%s/%u", tvb_ip_to_str(tvb, offset), tvb_get_guint8(tvb,offset+4));
offset += 5;
length -= 5;
}
}
break;
case TYPE_PROTOCOL_HELLO:
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset,length, ett_cdp_tlv, NULL, "Protocol Hello: %s",
val_to_str(tvb_get_ntohs(tvb, offset+7), type_hello_vals, "Unknown (0x%04x)"));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_oui, tvb, offset+4, 3, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_protocol_id, tvb, offset+7, 2, ENC_BIG_ENDIAN);
switch(tvb_get_ntohs(tvb, offset+7)) {
case TYPE_HELLO_CLUSTER_MGMT:
proto_tree_add_item(tlv_tree, hf_cdp_cluster_master_ip, tvb, offset+9, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_cluster_ip, tvb, offset+13, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_cluster_version, tvb, offset+17, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_cluster_sub_version, tvb, offset+18, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_cluster_status, tvb, offset+19, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_cluster_unknown, tvb, offset+20, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_cluster_commander_mac, tvb, offset+21, 6, ENC_NA);
proto_tree_add_item(tlv_tree, hf_cdp_cluster_switch_mac, tvb, offset+27, 6, ENC_NA);
proto_tree_add_item(tlv_tree, hf_cdp_cluster_unknown, tvb, offset+33, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_cluster_management_vlan, tvb, offset+34, 2, ENC_BIG_ENDIAN);
break;
default:
proto_tree_add_item(tlv_tree, hf_cdp_hello_unknown, tvb, offset + 9, length - 9, ENC_NA);
break;
}
}
offset += length;
break;
case TYPE_VTP_MGMT_DOMAIN:
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "VTP Management Domain: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_vtp_management_domain, tvb, offset + 4, length - 4, ENC_NA|ENC_ASCII);
}
offset += length;
break;
case TYPE_NATIVE_VLAN:
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Native VLAN: %u",
tvb_get_ntohs(tvb, offset + 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_native_vlan, tvb, offset + 4, 2, ENC_BIG_ENDIAN);
}
offset += length;
break;
case TYPE_DUPLEX:
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Duplex: %s",
tvb_get_guint8(tvb, offset + 4) ?
"Full" : "Half" );
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_duplex, tvb, offset + 4, 1, ENC_NA);
}
offset += length;
break;
case TYPE_VOIP_VLAN_REPLY:
if (tree) {
if (length >= 7) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset, length, ett_cdp_tlv, NULL,
"VoIP VLAN Reply: %u", tvb_get_ntohs(tvb, offset + 5));
} else {
/*
* XXX - what are these? I've seen them in some captures;
* they have a length of 6, and run up to the end of
* the packet, so if we try to dissect it the same way
* we dissect the 7-byte ones, we report a malformed
* frame.
*/
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "VoIP VLAN Reply");
}
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_data, tvb, offset + 4, 1, ENC_NA);
if (length >= 7) {
proto_tree_add_item(tlv_tree, hf_cdp_voice_vlan, tvb, offset + 5, 2, ENC_BIG_ENDIAN);
}
}
offset += length;
break;
case TYPE_VOIP_VLAN_QUERY:
if (tree) {
if (length >= 7) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset, length,
ett_cdp_tlv, NULL, "VoIP VLAN Query: %u", tvb_get_ntohs(tvb, offset + 5));
} else {
/*
* XXX - what are these? I've seen them in some captures;
* they have a length of 6, and run up to the end of
* the packet, so if we try to dissect it the same way
* we dissect the 7-byte ones, we report a malformed
* frame.
*/
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "VoIP VLAN Query");
}
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_data, tvb, offset + 4, 1, ENC_NA);
if (length >= 7) {
proto_tree_add_item(tlv_tree, hf_cdp_voice_vlan, tvb, offset + 5, 2, ENC_BIG_ENDIAN);
}
}
offset += length;
break;
case TYPE_POWER:
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Power Consumption: %u mW",
tvb_get_ntohs(tvb, offset + 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_uint_format_value(tlv_tree, hf_cdp_power_consumption, tvb, offset + 4, 2,
tvb_get_ntohs(tvb, offset + 4), "%u mW", tvb_get_ntohs(tvb, offset + 4));
}
offset += length;
break;
case TYPE_MTU:
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "MTU: %u",
tvb_get_ntohl(tvb,offset + 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_mtu, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
}
offset += length;
break;
case TYPE_TRUST_BITMAP:
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Trust Bitmap: 0x%02X",
tvb_get_guint8(tvb, offset + 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_trust_bitmap, tvb, offset + 4, 1, ENC_BIG_ENDIAN);
}
offset += length;
break;
case TYPE_UNTRUSTED_COS:
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Untrusted port CoS: 0x%02X",
tvb_get_guint8(tvb, offset + 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_untrusted_port_cos, tvb, offset + 4, 1, ENC_BIG_ENDIAN);
}
offset += length;
break;
case TYPE_SYSTEM_NAME:
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "System Name: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_system_name, tvb, offset + 4, length - 4, ENC_NA|ENC_ASCII);
}
offset += length;
break;
case TYPE_SYSTEM_OID:
if (tree) {
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "System Object Identifier");
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_system_object_identifier, tvb, offset + 4, length - 4, ENC_NA);
}
offset += length;
break;
case TYPE_MANAGEMENT_ADDR:
if (tree) {
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Management Addresses");
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
}
offset += 4;
length -= 4;
naddresses = tvb_get_ntohl(tvb, offset);
if (tree) {
proto_tree_add_item(tlv_tree, hf_cdp_number_of_addresses, tvb, offset, 4, ENC_BIG_ENDIAN);
}
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_LOCATION:
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Location: %s",
tvb_format_text(tvb, offset + 5, length - 5));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_location_unknown, tvb, offset + 4, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_location, tvb, offset + 5, length - 5, ENC_NA|ENC_ASCII);
}
offset += length;
break;
case TYPE_POWER_REQUESTED:
if (tree) {
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Power Request: ");
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_request_id, tvb, offset + 4, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_management_id, tvb, offset + 6, 2, ENC_BIG_ENDIAN);
}
power_req_len = (tvb_get_ntohs(tvb, offset + TLV_LENGTH)) - 8;
/* Move offset to where the list of Power Request Values Exist */
offset += 8;
while(power_req_len) {
if (power_req_len > 4) {
power_req = tvb_get_ntohl(tvb, offset);
proto_tree_add_uint_format_value(tlv_tree, hf_cdp_power_requested, tvb, offset, 4, power_req, "%u mW", power_req);
proto_item_append_text(tlvi, "%u mW, ", power_req);
power_req_len -= 4;
offset += 4;
} else {
if (power_req_len == 4) {
power_req = tvb_get_ntohl(tvb, offset);
proto_tree_add_uint_format_value(tlv_tree, hf_cdp_power_requested, tvb, offset, 4, power_req, "%u mW", power_req);
proto_item_append_text(tlvi, "%u mW", power_req);
}
offset += power_req_len;
break;
}
}
break;
case TYPE_POWER_AVAILABLE:
if (tree) {
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Power Available: ");
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_request_id, tvb, offset + 4, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_management_id, tvb, offset + 6, 2, ENC_BIG_ENDIAN);
}
power_avail_len = (tvb_get_ntohs(tvb, offset + TLV_LENGTH)) - 8;
/* Move offset to where the list of Power Available Values Exist */
offset += 8;
while(power_avail_len) {
if (power_avail_len >= 4) {
power_avail = tvb_get_ntohl(tvb, offset);
proto_tree_add_uint_format_value(tlv_tree, hf_cdp_power_available, tvb, offset, 4, power_avail, "%u mW", power_avail);
proto_item_append_text(tlvi, "%u mW, ", power_avail);
power_avail_len -= 4;
offset += 4;
} else {
offset += power_avail_len;
break;
}
}
break;
case TYPE_NRGYZ:
if (tree) {
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "EnergyWise");
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_encrypted_data, tvb, offset + 4, 20, ENC_NA);
proto_tree_add_item(tlv_tree, hf_cdp_seen_sequence, tvb, offset + 24, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_sequence_number, tvb, offset + 28, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_model_number, tvb, offset + 32, 16, ENC_NA|ENC_ASCII);
proto_tree_add_item(tlv_tree, hf_cdp_unknown_pad, tvb, offset + 48, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_hardware_version_id, tvb, offset + 50, 3, ENC_NA|ENC_ASCII);
proto_tree_add_item(tlv_tree, hf_cdp_system_serial_number, tvb, offset + 53, 11, ENC_NA|ENC_ASCII);
proto_tree_add_item(tlv_tree, hf_cdp_nrgyz_unknown_values, tvb, offset + 64, 8, ENC_NA);
proto_tree_add_item(tlv_tree, hf_cdp_len_tlv_table, tvb, offset + 72, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_num_tlvs_table, tvb, offset + 74, 2, ENC_BIG_ENDIAN);
dissect_nrgyz_tlv(tvb, pinfo, offset + 76,
tvb_get_ntohs(tvb, offset + 72),
tvb_get_ntohs(tvb, offset + 74),
tlv_tree);
}
offset += length;
break;
case TYPE_SPARE_POE:
if (tree) {
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb, offset, length,
ett_cdp_tlv, NULL, "Spare Pair PoE");
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
}
offset += 4;
length -= 4;
dissect_spare_poe_tlv(tvb, offset, length, tlv_tree);
offset += length;
break;
case TYPE_HP_BSSID:
/* BSSID */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "BSSID: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
case TYPE_HP_SERIAL:
/* Serial number */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Serial: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
case TYPE_HP_SSID:
/* SSID */
if (tree) {
if (length == 4) {
tlv_tree = proto_tree_add_subtree(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "SSID: [Empty]");
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
} else {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "SSID: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
}
offset += length;
break;
case TYPE_HP_RADIO1_CH:
/* Radio1 channel */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Radio 1 channel: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
case TYPE_HP_SNMP_PORT:
/* SNMP listening UDP port */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "SNMP port: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
case TYPE_HP_MGMT_PORT:
/* Web interface TCP port */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Web mgmt port: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
case TYPE_HP_SOURCE_MAC:
/* Sender MAC address for the AP, bouth wired and wireless */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Source MAC: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
case TYPE_HP_RADIO2_CH:
/* Radio2 channel */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Radio 2 channel: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
case TYPE_HP_RADIO1_OMODE:
/* Radio1 Operating mode */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Radio 1 operating mode: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
case TYPE_HP_RADIO2_OMODE:
/* Radio2 Operating mode */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Radio 2 operating mode: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
case TYPE_HP_RADIO1_RMODE:
/* Radio1 Radio mode */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Radio 1 radio mode: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
case TYPE_HP_RADIO2_RMODE:
/* Radio2 Radio mode */
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb,
offset, length, ett_cdp_tlv, NULL, "Radio 2 radio mode: %s",
tvb_format_text(tvb, offset + 4, length - 4));
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_platform, tvb, offset + 4, length - 4, ENC_ASCII|ENC_NA);
}
offset += length;
break;
default:
if (tree) {
tlv_tree = proto_tree_add_subtree_format(cdp_tree, tvb, offset,
length, ett_cdp_tlv, NULL, "Type: %s, length: %u",
val_to_str(type, type_vals, "Unknown (0x%04x)"),
length);
proto_tree_add_item(tlv_tree, hf_cdp_tlvtype, tvb, offset + TLV_TYPE, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_tlvlength, tvb, offset + TLV_LENGTH, 2, ENC_BIG_ENDIAN);
if (length > 4) {
proto_tree_add_item(tlv_tree, hf_cdp_data, tvb, offset + 4, length - 4, ENC_NA);
} else {
return tvb_captured_length(tvb);
}
}
offset += length;
}
}
call_data_dissector(tvb_new_subset_remaining(tvb, offset), pinfo, cdp_tree);
return tvb_captured_length(tvb);
}
#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
dissect_address_tlv(tvbuff_t *tvb, int offset, int length, proto_tree *tree)
{
proto_item *ti;
proto_tree *address_tree;
guint8 protocol_type;
guint8 protocol_length;
int nlpid;
guint16 address_length;
int hf_addr = -1;
if (length < 1)
return -1;
address_tree = proto_tree_add_subtree(tree, tvb, offset, length, ett_cdp_address, &ti, "Truncated address");
protocol_type = tvb_get_guint8(tvb, offset);
proto_tree_add_item(address_tree, hf_cdp_protocol_type, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
length -= 1;
if (length < 1)
return -1;
protocol_length = tvb_get_guint8(tvb, offset);
proto_tree_add_item(address_tree, hf_cdp_protocol_length, tvb, offset, 1, ENC_BIG_ENDIAN);
offset += 1;
length -= 1;
if (length < protocol_length) {
if (length != 0) {
ti = proto_tree_add_item(address_tree, hf_cdp_protocol, tvb, offset, length, ENC_NA);
proto_item_append_text(ti, " (truncated)");
}
return -1;
}
if ((protocol_type == PROTO_TYPE_NLPID) && (protocol_length == 1)) {
nlpid = tvb_get_guint8(tvb, offset);
proto_tree_add_bytes_format_value(address_tree, hf_cdp_protocol, tvb, offset, protocol_length, NULL, "%s",
val_to_str(nlpid, nlpid_vals, "Unknown (0x%02x)"));
} else {
nlpid = -1;
proto_tree_add_item(address_tree, hf_cdp_protocol, tvb, offset, protocol_length, ENC_NA);
}
offset += protocol_length;
length -= protocol_length;
if (length < 2)
return -1;
address_length = tvb_get_ntohs(tvb, offset);
proto_tree_add_item(address_tree, hf_cdp_address_length, tvb, offset, 2, ENC_BIG_ENDIAN);
offset += 2;
length -= 2;
if (length < address_length) {
if (length != 0) {
ti = proto_tree_add_item(address_tree, hf_cdp_address, tvb, offset, length, ENC_NA);
proto_item_append_text(ti, " (truncated)");
}
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. */
if ((protocol_type == PROTO_TYPE_NLPID) && (protocol_length == 1)) {
switch (nlpid) {
/* XXX - dissect NLPID_ISO8473_CLNP as OSI CLNP address? */
case NLPID_IP:
if (address_length == 4) {
/* The address is an IP address. */
proto_item_set_text(ti, "IP address: %s", tvb_ip_to_str(tvb, offset));
hf_addr = hf_cdp_nrgyz_ip_address;
proto_tree_add_item(address_tree, hf_cdp_nrgyz_ip_address, tvb, offset, address_length, ENC_BIG_ENDIAN);
}
break;
}
}
if (hf_addr == -1)
{
proto_tree_add_item(address_tree, hf_cdp_address, tvb, offset, address_length, ENC_NA);
proto_item_set_text(ti, "Address: %s", tvb_bytes_to_str(wmem_packet_scope(), tvb, offset, address_length));
}
return 2 + protocol_length + 2 + address_length;
}
static void
dissect_capabilities(tvbuff_t *tvb, int offset, int length, proto_tree *tree)
{
proto_item *ti;
proto_tree *capabilities_tree;
if (length < 4)
return;
ti = proto_tree_add_item(tree, hf_cdp_capabilities, tvb, offset, 4, ENC_BIG_ENDIAN);
capabilities_tree = proto_item_add_subtree(ti, ett_cdp_capabilities);
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_router, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_trans_bridge, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_src_bridge, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_switch, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_host, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_igmp_capable, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(capabilities_tree, hf_cdp_capabilities_repeater, tvb, offset, 4, ENC_BIG_ENDIAN);
}
static void
dissect_nrgyz_tlv(tvbuff_t *tvb, packet_info* pinfo, int offset, guint16 length, guint16 num,
proto_tree *tree)
{
guint32 tlvt, tlvl;
proto_tree *etree = NULL;
char const *ttext = NULL;
while (num-- && (length >= 8)) {
tlvt = tvb_get_ntohl(tvb, offset);
tlvl = tvb_get_ntohl(tvb, offset + 4);
if (length < tlvl)
break;
length -= tlvl;
if (tlvl < 8) {
proto_tree_add_expert_format(tree, pinfo, &ei_cdp_nrgyz_tlvlength, tvb, offset, 8, "TLV with invalid length %u (< 8)", tlvl);
offset += 8;
break;
}
else {
ttext = val_to_str(tlvt, type_nrgyz_vals, "Unknown (0x%04x)");
switch (tlvt) {
case TYPE_NRGYZ_ROLE:
case TYPE_NRGYZ_DOMAIN:
case TYPE_NRGYZ_NAME:
etree = proto_tree_add_subtree_format(tree, tvb, offset,
tlvl, ett_cdp_nrgyz_tlv, NULL, "EnergyWise %s: %s", ttext,
tvb_format_stringzpad(tvb, offset + 8, tlvl - 8)
);
break;
case TYPE_NRGYZ_REPLYTO:
etree = proto_tree_add_subtree_format(tree, tvb, offset,
tlvl, ett_cdp_nrgyz_tlv, NULL, "EnergyWise %s: %s port %u",
ttext,
tvb_ip_to_str(tvb, offset + 12),
tvb_get_ntohs(tvb, offset + 10)
);
break;
default:
etree = proto_tree_add_subtree_format(tree, tvb, offset,
tlvl, ett_cdp_nrgyz_tlv, NULL, "EnergyWise %s TLV", ttext);
}
proto_tree_add_item(etree, hf_cdp_nrgyz_tlvtype, tvb, offset, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(etree, hf_cdp_nrgyz_tlvlength, tvb, offset + 4, 4, ENC_BIG_ENDIAN);
switch (tlvt) {
case TYPE_NRGYZ_ROLE:
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_role, tvb, offset + 8, tlvl - 8, ENC_NA|ENC_ASCII);
break;
case TYPE_NRGYZ_DOMAIN:
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_domain, tvb, offset + 8, tlvl - 8, ENC_NA|ENC_ASCII);
break;
case TYPE_NRGYZ_NAME:
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_name, tvb, offset + 8, tlvl - 8, ENC_NA|ENC_ASCII);
break;
case TYPE_NRGYZ_REPLYTO:
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_unknown_field, tvb, offset + 8, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_port, tvb, offset + 10, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_ip_address, tvb, offset + 12, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_backup_server_port, tvb, offset + 16, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(etree, hf_cdp_nrgyz_reply_to_backup_server_ip, tvb, offset + 18, 4, ENC_BIG_ENDIAN);
break;
default:
if (tlvl > 8) {
proto_tree_add_item(etree, hf_cdp_data, tvb, offset + 8, tlvl - 8, ENC_NA);
}
}
offset += tlvl;
}
}
if (length) {
proto_tree_add_expert(tree, pinfo, &ei_cdp_invalid_data, tvb, offset, length);
}
}
static void
dissect_spare_poe_tlv(tvbuff_t *tvb, int offset, int length,
proto_tree *tree)
{
proto_item *ti;
proto_tree *tlv_tree;
if (length == 0) {
return;
}
ti = proto_tree_add_item(tree, hf_cdp_spare_poe_tlv, tvb, offset, 1, ENC_BIG_ENDIAN);
tlv_tree = proto_item_add_subtree(ti, ett_cdp_spare_poe_tlv);
proto_tree_add_item(tlv_tree, hf_cdp_spare_poe_tlv_poe, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_spare_poe_tlv_spare_pair_arch, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_spare_poe_tlv_req_spare_pair_poe, tvb, offset, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(tlv_tree, hf_cdp_spare_poe_tlv_pse_spare_pair_poe, tvb, offset, 1, ENC_BIG_ENDIAN);
}
static void
add_multi_line_string_to_tree(proto_tree *tree, tvbuff_t *tvb, gint start,
gint len, int hf)
{
gint next;
int line_len;
int data_len;
while (len > 0) {
line_len = tvb_find_line_end(tvb, start, len, &next, FALSE);
data_len = next - start;
proto_tree_add_string(tree, hf, tvb, start, data_len, tvb_format_stringzpad(tvb, start, line_len));
start += data_len;
len -= data_len;
}
}
void
proto_register_cdp(void)
{
static hf_register_info hf[] = {
{ &hf_cdp_version,
{ "Version", "cdp.version", FT_UINT8, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_cdp_ttl,
{ "TTL", "cdp.ttl", FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_cdp_checksum,
{ "Checksum", "cdp.checksum", FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL }},
{ &hf_cdp_checksum_good,
{ "Good", "cdp.checksum_good", FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"True: checksum matches packet content; False: doesn't match content or not checked", HFILL }},
{ &hf_cdp_checksum_bad,
{ "Bad", "cdp.checksum_bad", FT_BOOLEAN, BASE_NONE, NULL, 0x0,
"True: checksum doesn't match packet content; False: matches content or not checked", HFILL }},
{ &hf_cdp_tlvtype,
{ "Type", "cdp.tlv.type", FT_UINT16, BASE_HEX, VALS(type_vals), 0x0,
NULL, HFILL }},
{ &hf_cdp_tlvlength,
{ "Length", "cdp.tlv.len", FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_cdp_nrgyz_tlvtype,
{ "TLV Type", "cdp.nrgyz.tlv.type", FT_UINT16, BASE_HEX, VALS(type_nrgyz_vals), 0x0,
NULL, HFILL }},
{ &hf_cdp_nrgyz_tlvlength,
{ "TLV Length", "cdp.nrgyz.tlv.len", FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_cdp_deviceid,
{"Device ID", "cdp.deviceid", FT_STRING, BASE_NONE,
NULL, 0, NULL, HFILL }},
{ &hf_cdp_platform,
{"Platform", "cdp.platform", FT_STRING, BASE_NONE,
NULL, 0, NULL, HFILL }},
{ &hf_cdp_portid,
{"Sent through Interface", "cdp.portid", FT_STRING, BASE_NONE,
NULL, 0, NULL, HFILL }},
{ &hf_cdp_capabilities,
{"Capabilities", "cdp.capabilities", FT_UINT32, BASE_HEX,
NULL, 0, NULL, HFILL }},
{ &hf_cdp_capabilities_router,
{"Router", "cdp.capabilities.router", FT_BOOLEAN, 32,
TFS(&tfs_yes_no), 0x01, NULL, HFILL }},
{ &hf_cdp_capabilities_trans_bridge,
{"Transparent Bridge", "cdp.capabilities.trans_bridge", FT_BOOLEAN, 32,
TFS(&tfs_yes_no), 0x02, NULL, HFILL }},
{ &hf_cdp_capabilities_src_bridge,
{"Source Route Bridge", "cdp.capabilities.src_bridge", FT_BOOLEAN, 32,
TFS(&tfs_yes_no), 0x04, NULL, HFILL }},
{ &hf_cdp_capabilities_switch,
{"Switch", "cdp.capabilities.switch", FT_BOOLEAN, 32,
TFS(&tfs_yes_no), 0x08, NULL, HFILL }},
{ &hf_cdp_capabilities_host,
{"Host", "cdp.capabilities.host", FT_BOOLEAN, 32,
TFS(&tfs_yes_no), 0x10, NULL, HFILL }},
{ &hf_cdp_capabilities_igmp_capable,
{"IGMP capable", "cdp.capabilities.igmp_capable", FT_BOOLEAN, 32,
TFS(&tfs_yes_no), 0x20, NULL, HFILL }},
{ &hf_cdp_capabilities_repeater,
{"Repeater", "cdp.capabilities.repeater", FT_BOOLEAN, 32,
TFS(&tfs_yes_no), 0x40, NULL, HFILL }},
{ &hf_cdp_spare_poe_tlv,
{ "Spare Pair PoE", "cdp.spare_poe_tlv", FT_UINT8, BASE_HEX,
NULL, 0x0, NULL, HFILL }
},
{ &hf_cdp_spare_poe_tlv_poe,
{ "PSE Four-Wire PoE", "cdp.spare_poe_tlv.poe", FT_BOOLEAN, 8,
TFS(&tfs_supported_not_supported), 0x01, NULL, HFILL }
},
{ &hf_cdp_spare_poe_tlv_spare_pair_arch,
{ "PD Spare Pair Architecture", "cdp.spare_poe_tlv.spare_pair_arch", FT_BOOLEAN, 8,
TFS(&tfs_shared_independent), 0x02, NULL, HFILL }
},
{ &hf_cdp_spare_poe_tlv_req_spare_pair_poe,
{ "PD Request Spare Pair PoE", "cdp.spare_poe_tlv.req_spare_pair_poe", FT_BOOLEAN, 8,
TFS(&tfs_on_off), 0x04, NULL, HFILL }
},
{ &hf_cdp_spare_poe_tlv_pse_spare_pair_poe,
{ "PSE Spare Pair PoE", "cdp.spare_poe_tlv.pse_spare_pair_poe", FT_BOOLEAN, 8,
TFS(&tfs_on_off), 0x08, NULL, HFILL }
},
/* Generated from convert_proto_tree_add_text.pl */
{ &hf_cdp_number_of_addresses, { "Number of addresses", "cdp.number_of_addresses", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_odr_default_gateway, { "ODR Default gateway", "cdp.odr_default_gateway", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_ip_prefix, { "IP Prefix", "cdp.ip_prefix", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_oui, { "OUI", "cdp.oui", FT_UINT24, BASE_HEX, VALS(oui_vals), 0x0, NULL, HFILL }},
{ &hf_cdp_protocol_id, { "Protocol ID", "cdp.protocol_id", FT_UINT16, BASE_HEX, VALS(type_hello_vals), 0x0, NULL, HFILL }},
{ &hf_cdp_cluster_master_ip, { "Cluster Master IP", "cdp.cluster.master_ip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_cluster_ip, { "IP?", "cdp.cluster.ip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_cluster_version, { "Version?", "cdp.cluster.version", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_cluster_sub_version, { "Sub Version?", "cdp.cluster.sub_version", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_cluster_status, { "Status?", "cdp.cluster.status", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_cluster_unknown, { "UNKNOWN", "cdp.cluster.unknown", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_cluster_commander_mac, { "Cluster Commander MAC", "cdp.cluster.commander_mac", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_cluster_switch_mac, { "Switch's MAC", "cdp.cluster.switch_mac", FT_ETHER, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_cluster_management_vlan, { "Management VLAN", "cdp.cluster.management_vlan", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_hello_unknown, { "Unknown", "cdp.hello.unknown", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_vtp_management_domain, { "VTP Management Domain", "cdp.vtp_management_domain", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_native_vlan, { "Native VLAN", "cdp.native_vlan", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_duplex, { "Duplex", "cdp.duplex", FT_BOOLEAN, BASE_NONE, TFS(&tfs_full_half), 0x0, NULL, HFILL }},
{ &hf_cdp_data, { "Data", "cdp.data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_voice_vlan, { "Voice VLAN", "cdp.voice_vlan", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_power_consumption, { "Power Consumption", "cdp.power_consumption", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_mtu, { "MTU", "cdp.mtu", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_trust_bitmap, { "Trust Bitmap", "cdp.trust_bitmap", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_untrusted_port_cos, { "Untrusted port CoS", "cdp.untrusted_port_cos", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_system_name, { "System Name", "cdp.system_name", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_system_object_identifier, { "System Object Identifier", "cdp.system_object_identifier", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_location_unknown, { "UNKNOWN", "cdp.location.unknown", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_location, { "Location", "cdp.location", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_request_id, { "Request-ID", "cdp.request_id", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_management_id, { "Management-ID", "cdp.management_id", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_power_requested, { "Power Requested", "cdp.power_requested", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_power_available, { "Power Available", "cdp.power_available", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_encrypted_data, { "Encrypted Data", "cdp.encrypted_data", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_seen_sequence, { "Seen Sequence?", "cdp.seen_sequence", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_sequence_number, { "Sequence Number", "cdp.sequence_number", FT_UINT32, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_model_number, { "Model Number", "cdp.model_number", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_unknown_pad, { "Unknown Pad", "cdp.unknown_pad", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_hardware_version_id, { "Hardware Version ID", "cdp.hardware_version_id", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_system_serial_number, { "System Serial Number", "cdp.system_serial_number", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_nrgyz_unknown_values, { "Unknown Values", "cdp.nrgyz_unknown_values", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_len_tlv_table, { "Length of TLV table", "cdp.len_tlv_table", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_num_tlvs_table, { "Number of TLVs in table", "cdp.num_tlvs_table", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_protocol, { "Protocol", "cdp.protocol", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_protocol_type, { "Protocol type", "cdp.protocol_type", FT_UINT8, BASE_HEX, VALS(proto_type_vals), 0x0, NULL, HFILL }},
{ &hf_cdp_protocol_length, { "Protocol length", "cdp.protocol_length", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_address, { "Address", "cdp.address", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_address_length, { "Address length", "cdp.address_length", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_nrgyz_reply_to_unknown_field, { "Unknown Field", "cdp.nrgyz_reply_to.unknown_field", FT_UINT16, BASE_HEX, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_nrgyz_reply_to_port, { "Port", "cdp.nrgyz_reply_to.port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_nrgyz_ip_address, { "IP Address", "cdp.nrgyz.ip_address", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_nrgyz_reply_to_ip_address, { "IP Address", "cdp.nrgyz_reply_to.ip_address", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_nrgyz_reply_to_backup_server_port, { "Backup server Port?", "cdp.nrgyz_reply_to.backup_server_port", FT_UINT16, BASE_DEC, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_nrgyz_reply_to_backup_server_ip, { "Backup Server IP?", "cdp.nrgyz_reply_to.backup_server_ip", FT_IPv4, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_nrgyz_reply_to_name, { "Name", "cdp.nrgyz_reply_to.name", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_nrgyz_reply_to_domain, { "Domain", "cdp.nrgyz_reply_to.domain", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_nrgyz_reply_to_role, { "Role", "cdp.nrgyz_reply_to.role", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
{ &hf_cdp_software_version, { "Software version", "cdp.software_version", FT_STRINGZ, BASE_NONE, NULL, 0x0, NULL, HFILL }},
};
static gint *ett[] = {
&ett_cdp,
&ett_cdp_tlv,
&ett_cdp_nrgyz_tlv,
&ett_cdp_address,
&ett_cdp_capabilities,
&ett_cdp_checksum,
&ett_cdp_spare_poe_tlv
};
static ei_register_info ei[] = {
{ &ei_cdp_invalid_data, { "cdp.invalid_data", PI_MALFORMED, PI_ERROR, "Invalid bytes at end", EXPFILL }},
{ &ei_cdp_nrgyz_tlvlength, { "cdp.nrgyz_tlv.length.invalid", PI_MALFORMED, PI_ERROR, "TLV with invalid length", EXPFILL }},
};
expert_module_t* expert_cdp;
proto_cdp = proto_register_protocol("Cisco Discovery Protocol", "CDP", "cdp");
proto_register_field_array(proto_cdp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
expert_cdp = expert_register_protocol(proto_cdp);
expert_register_field_array(expert_cdp, ei, array_length(ei));
}
void
proto_reg_handoff_cdp(void)
{
dissector_handle_t cdp_handle;
cdp_handle = create_dissector_handle(dissect_cdp, proto_cdp);
dissector_add_uint("llc.cisco_pid", 0x2000, cdp_handle);
dissector_add_uint("chdlc.protocol", 0x2000, cdp_handle);
dissector_add_uint("ppp.protocol", 0x0207, cdp_handle);
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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