20800366dd
Change all wireshark.org URLs to use https. Fix some broken links while we're at it. Change-Id: I161bf8eeca43b8027605acea666032da86f5ea1c Reviewed-on: https://code.wireshark.org/review/34089 Reviewed-by: Guy Harris <guy@alum.mit.edu>
590 lines
19 KiB
C
590 lines
19 KiB
C
/* packet-mstp.c
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* Routines for BACnet MS/TP datalink dissection
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* Copyright 2008 Steve Karg <skarg@users.sourceforge.net> Alabama
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*
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* This is described in Clause 9 of ANSI/ASHRAE Standard 135-2004,
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* BACnet - A Data Communication Protocol for Building Automation
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* and Contrl Networks; clause 9 "describes a Master-Slave/Token-Passing
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* (MS/TP) data link protocol, which provides the same services to the
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* network layer as ISO 8802-2 Logical Link Control. It uses services
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* provided by the EIA-485 physical layer." See section 9.3 for the
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* frame format.
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <wiretap/wtap.h>
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#include <epan/expert.h>
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#include <epan/address_types.h>
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#include <epan/to_str.h>
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#include "packet-mstp.h"
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void proto_register_mstp(void);
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void proto_reg_handoff_mstp(void);
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/* Probably should be a preference, but here for now */
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#define BACNET_MSTP_SUMMARY_IN_TREE
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#define BACNET_MSTP_CHECKSUM_VALIDATE
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/* MS/TP Frame Type */
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/* Frame Types 8 through 127 are reserved by ASHRAE. */
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#define MSTP_TOKEN 0x00
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#define MSTP_POLL_FOR_MASTER 0x01
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#define MSTP_REPLY_TO_POLL_FOR_MASTER 0x02
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#define MSTP_TEST_REQUEST 0x03
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#define MSTP_TEST_RESPONSE 0x04
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#define MSTP_BACNET_DATA_EXPECTING_REPLY 0x05
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#define MSTP_BACNET_DATA_NOT_EXPECTING_REPLY 0x06
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#define MSTP_REPLY_POSTPONED 0x07
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#define MSTP_BACNET_EXTENDED_DATA_EXPECTING_REPLY 0x20
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#define MSTP_BACNET_EXTENDED_DATA_NOT_EXPECTING_REPLY 0x21
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static const value_string
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bacnet_mstp_frame_type_name[] = {
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{MSTP_TOKEN, "Token"},
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{MSTP_POLL_FOR_MASTER, "Poll For Master"},
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{MSTP_REPLY_TO_POLL_FOR_MASTER, "Reply To Poll For Master"},
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{MSTP_TEST_REQUEST, "Test_Request"},
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{MSTP_TEST_RESPONSE, "Test_Response"},
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{MSTP_BACNET_DATA_EXPECTING_REPLY, "BACnet Data Expecting Reply"},
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{MSTP_BACNET_DATA_NOT_EXPECTING_REPLY, "BACnet Data Not Expecting Reply"},
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{MSTP_REPLY_POSTPONED, "Reply Postponed"},
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{MSTP_BACNET_EXTENDED_DATA_EXPECTING_REPLY, "BACnet Extended Data Expecting Reply"},
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{MSTP_BACNET_EXTENDED_DATA_NOT_EXPECTING_REPLY, "BACnet Extended Data Not Expecting Reply"},
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/* Frame Types 128 through 255: Proprietary Frames */
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{0, NULL }
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};
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static dissector_table_t subdissector_table;
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static int proto_mstp = -1;
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static gint ett_bacnet_mstp = -1;
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static gint ett_bacnet_mstp_checksum = -1;
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static int hf_mstp_preamble_55 = -1;
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static int hf_mstp_preamble_FF = -1;
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static int hf_mstp_frame_type = -1;
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static int hf_mstp_frame_destination = -1;
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static int hf_mstp_frame_source = -1;
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static int hf_mstp_frame_vendor_id = -1;
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static int hf_mstp_frame_pdu_len = -1;
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static int hf_mstp_frame_crc8 = -1;
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static int hf_mstp_frame_crc16 = -1;
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static int hf_mstp_frame_checksum_status = -1;
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static expert_field ei_mstp_frame_pdu_len = EI_INIT;
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static expert_field ei_mstp_frame_checksum_bad = EI_INIT;
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static int mstp_address_type = -1;
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static dissector_handle_t mstp_handle;
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#if defined(BACNET_MSTP_CHECKSUM_VALIDATE)
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/* Accumulate "dataValue" into the CRC in crcValue. */
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/* Return value is updated CRC */
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/* The ^ operator means exclusive OR. */
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/* Note: This function is copied directly from the BACnet standard. */
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static guint8
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CRC_Calc_Header(
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guint8 dataValue,
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guint8 crcValue)
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{
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guint16 crc;
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crc = crcValue ^ dataValue; /* XOR C7..C0 with D7..D0 */
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/* Exclusive OR the terms in the table (top down) */
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crc = crc ^ (crc << 1) ^ (crc << 2) ^ (crc << 3)
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^ (crc << 4) ^ (crc << 5) ^ (crc << 6)
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^ (crc << 7);
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/* Combine bits shifted out left hand end */
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return (crc & 0xfe) ^ ((crc >> 8) & 1);
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}
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#endif
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#if defined(BACNET_MSTP_CHECKSUM_VALIDATE)
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/* Accumulate "dataValue" into the CRC in crcValue. */
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/* Return value is updated CRC */
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/* The ^ operator means exclusive OR. */
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/* Note: This function is copied directly from the BACnet standard. */
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static guint16
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CRC_Calc_Data(
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guint8 dataValue,
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guint16 crcValue)
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{
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guint16 crcLow;
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crcLow = (crcValue & 0xff) ^ dataValue; /* XOR C7..C0 with D7..D0 */
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/* Exclusive OR the terms in the table (top down) */
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return (crcValue >> 8) ^ (crcLow << 8) ^ (crcLow << 3)
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^ (crcLow << 12) ^ (crcLow >> 4)
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^ (crcLow & 0x0f) ^ ((crcLow & 0x0f) << 7);
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}
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#endif
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/* Common frame type text */
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const gchar *
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mstp_frame_type_text(guint32 val)
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{
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return val_to_str(val,
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bacnet_mstp_frame_type_name,
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"Unknown Frame Type (%u)");
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}
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static int mstp_str_len(const address* addr _U_)
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{
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return 5;
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}
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static int mstp_to_str(const address* addr, gchar *buf, int buf_len _U_)
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{
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*buf++ = '0';
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*buf++ = 'x';
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buf = bytes_to_hexstr(buf, (const guint8 *)addr->data, 1);
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*buf = '\0'; /* NULL terminate */
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return mstp_str_len(addr);
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}
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static const char* mstp_col_filter_str(const address* addr _U_, gboolean is_src)
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{
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if (is_src)
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return "mstp.src";
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return "mstp.dst";
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}
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static int mstp_len(void)
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{
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return 1;
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}
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static guint32 calc_data_crc32(guint8 dataValue, guint32 crc32kValue)
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{
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guint8 data;
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guint8 b;
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guint32 crc;
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data = dataValue;
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crc = crc32kValue;
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for (b = 0; b < 8; b++)
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{
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if ((data & 1) ^ (crc & 1))
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{
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crc >>= 1;
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crc ^= 0xEB31D82E;
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}
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else
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{
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crc >>= 1;
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}
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data >>= 1;
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}
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return crc;
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}
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/*
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* Decodes 'length' octets of data located at 'from' and
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* writes the original client data at 'to', restoring any
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* 'mask' octets that may present in the encoded data.
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* Returns the length of the encoded data or zero if error.
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* The length of the encoded value is always smaller or equal to 'length'.
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*/
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static gsize cobs_decode(guint8 *to, const guint8 *from, gsize length, guint8 mask)
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{
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gsize read_index = 0;
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gsize write_index = 0;
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guint8 code;
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guint8 last_code;
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while (read_index < length)
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{
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code = from[read_index] ^ mask;
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last_code = code;
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/*
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* A code octet equal to zero or greater than the length is illegal.
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*/
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if (code == 0 || read_index + code > length)
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return 0;
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read_index++;
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/*
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* Decode data octets. The code octet is included in the length, but the
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* terminating zero octet is not. (Note that a data octet of zero should not
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* occur here since the whole point of COBS encoding is to remove zeroes.)
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*/
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while (--code > 0)
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to[write_index++] = from[read_index++] ^ mask;
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/*
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* Restore the implicit zero at the end of each decoded block
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* except when it contains exactly 254 non-zero octets or the
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* end of data has been reached.
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*/
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if ((last_code != 255) && (read_index < length))
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to[write_index++] = 0;
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}
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return write_index;
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}
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#define SIZEOF_ENC_CRC 5
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#define CRC32K_INITIAL_VALUE 0xFFFFFFFF
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#define CRC32K_RESIDUE 0x0843323B
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#define MSTP_PREAMBLE_X55 0x55
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/*
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* Decodes Encoded Data and Encoded CRC-32K fields at 'from' (of length 'length')
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* and writes the decoded client data at 'to'.
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* Returns length of decoded Data in octets or zero if error.
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* NOTE: Safe to call with 'output' <= 'input' (decodes in place).
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*/
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static gsize cobs_frame_decode(guint8 *to, const guint8 *from, gsize length)
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{
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gsize data_len;
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gsize crc_len;
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guint32 crc32K;
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guint32 i;
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/* Must have enough room for the encoded CRC-32K value. */
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if (length < SIZEOF_ENC_CRC)
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return 0;
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/*
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* Calculate the CRC32K over the Encoded Data octets before decoding.
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* NOTE: Adjust 'length' by removing size of Encoded CRC-32K field.
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*/
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data_len = length - SIZEOF_ENC_CRC;
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crc32K = CRC32K_INITIAL_VALUE;
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for (i = 0; i < data_len; i++)
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crc32K = calc_data_crc32(from[i], crc32K);
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data_len = cobs_decode(to, from, data_len, MSTP_PREAMBLE_X55);
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/*
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* Decode the Encoded CRC-32K field and append to data.
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*/
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crc_len = cobs_decode((guint8 *)(to + data_len),
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(guint8 *)(from + length - SIZEOF_ENC_CRC),
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SIZEOF_ENC_CRC, MSTP_PREAMBLE_X55);
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/*
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* Sanity check length of decoded CRC32K.
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*/
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if (crc_len != sizeof(guint32))
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return 0;
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/*
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* Verify CRC32K of incoming frame.
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*/
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for (i = 0; i < crc_len; i++)
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crc32K = calc_data_crc32((to + data_len)[i], crc32K);
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if (crc32K == CRC32K_RESIDUE)
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return data_len;
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return 0;
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}
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/* dissects a BACnet MS/TP frame */
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/* preamble 0x55 0xFF is not included in Cimetrics U+4 output */
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void
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dissect_mstp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree,
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proto_tree *subtree, gint offset)
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{
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guint8 mstp_frame_type = 0;
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guint16 mstp_frame_pdu_len = 0;
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guint16 mstp_tvb_pdu_len = 0;
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guint16 vendorid = 0;
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tvbuff_t *next_tvb = NULL;
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proto_item *item;
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#if defined(BACNET_MSTP_CHECKSUM_VALIDATE)
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/* used to calculate the crc value */
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guint8 crc8 = 0xFF;
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guint16 crc16 = 0xFFFF;
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guint8 crcdata;
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guint16 i; /* loop counter */
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guint16 max_len = 0;
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#endif
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "BACnet");
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col_set_str(pinfo->cinfo, COL_INFO, "BACnet MS/TP");
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mstp_frame_type = tvb_get_guint8(tvb, offset);
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mstp_frame_pdu_len = tvb_get_ntohs(tvb, offset+3);
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col_append_fstr(pinfo->cinfo, COL_INFO, " %s",
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mstp_frame_type_text(mstp_frame_type));
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/* Add the items to the tree */
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proto_tree_add_item(subtree, hf_mstp_frame_type, tvb,
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offset, 1, ENC_LITTLE_ENDIAN);
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proto_tree_add_item(subtree, hf_mstp_frame_destination, tvb,
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offset+1, 1, ENC_LITTLE_ENDIAN);
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proto_tree_add_item(subtree, hf_mstp_frame_source, tvb,
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offset+2, 1, ENC_LITTLE_ENDIAN);
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item = proto_tree_add_item(subtree, hf_mstp_frame_pdu_len, tvb,
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offset+3, 2, ENC_BIG_ENDIAN);
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mstp_tvb_pdu_len = tvb_reported_length_remaining(tvb, offset+6);
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/* check the length - which does not include the crc16 checksum */
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if (mstp_tvb_pdu_len > 2) {
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if (mstp_frame_pdu_len > (mstp_tvb_pdu_len-2)) {
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expert_add_info(pinfo, item, &ei_mstp_frame_pdu_len);
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}
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}
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#if defined(BACNET_MSTP_CHECKSUM_VALIDATE)
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/* calculate checksum to validate */
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for (i = 0; i < 5; i++) {
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crcdata = tvb_get_guint8(tvb, offset+i);
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crc8 = CRC_Calc_Header(crcdata, crc8);
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}
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crc8 = ~crc8;
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proto_tree_add_checksum(subtree, tvb, offset+5, hf_mstp_frame_crc8, hf_mstp_frame_checksum_status, &ei_mstp_frame_checksum_bad, pinfo, crc8,
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ENC_BIG_ENDIAN, PROTO_CHECKSUM_VERIFY);
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#else
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proto_tree_add_checksum(subtree, tvb, offset+5, hf_mstp_frame_crc8, hf_mstp_frame_checksum_status, &ei_mstp_frame_checksum_bad, pinfo, 0,
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PROTO_CHECKSUM_NO_FLAGS);
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#endif
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/* dissect BACnet PDU if there is one */
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offset += 6;
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if (mstp_frame_type == MSTP_BACNET_EXTENDED_DATA_EXPECTING_REPLY ||
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mstp_frame_type == MSTP_BACNET_EXTENDED_DATA_NOT_EXPECTING_REPLY) {
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/* handle extended frame types differently because their data need to
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be 'decoded' first */
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guint8 *decode_base;
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tvbuff_t *decoded_tvb;
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guint16 decoded_len = mstp_frame_pdu_len;
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decode_base = (guint8 *)tvb_memdup(pinfo->pool, tvb, offset, mstp_frame_pdu_len + 2);
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decoded_len = (guint16)cobs_frame_decode(decode_base, decode_base, decoded_len + 2);
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if (decoded_len > 0) {
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decoded_tvb = tvb_new_real_data(decode_base, decoded_len, decoded_len);
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tvb_set_child_real_data_tvbuff(tvb, decoded_tvb);
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add_new_data_source(pinfo, decoded_tvb, "Decoded Data");
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if (!(dissector_try_uint(subdissector_table, (vendorid << 16) + mstp_frame_type,
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decoded_tvb, pinfo, tree))) {
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/* Unknown function - dissect the payload as data */
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call_data_dissector(decoded_tvb, pinfo, tree);
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}
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proto_tree_add_checksum(subtree, tvb, offset + mstp_frame_pdu_len, hf_mstp_frame_crc16, hf_mstp_frame_checksum_status, &ei_mstp_frame_checksum_bad,
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pinfo, tvb_get_ntohs(tvb, offset + mstp_frame_pdu_len), ENC_BIG_ENDIAN, PROTO_CHECKSUM_VERIFY);
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} else {
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next_tvb = tvb_new_subset_length(tvb, offset,
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mstp_tvb_pdu_len);
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call_data_dissector(next_tvb, pinfo, tree);
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proto_tree_add_checksum(subtree, tvb, offset + mstp_frame_pdu_len, hf_mstp_frame_crc16, hf_mstp_frame_checksum_status, &ei_mstp_frame_checksum_bad, pinfo, 0,
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ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS);
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}
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}
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else if (mstp_tvb_pdu_len > 2) {
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/* remove the 16-bit crc checksum bytes */
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mstp_tvb_pdu_len -= 2;
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if (mstp_frame_type < 128) {
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vendorid = 0;
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next_tvb = tvb_new_subset_length(tvb, offset,
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mstp_tvb_pdu_len);
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} else {
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/* With Vendor ID */
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vendorid = tvb_get_ntohs(tvb, offset);
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/* Write Vendor ID as tree */
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proto_tree_add_item(subtree, hf_mstp_frame_vendor_id, tvb,
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offset, 2, ENC_BIG_ENDIAN);
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/* NPDU - call the Vendor specific dissector */
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next_tvb = tvb_new_subset_length_caplen(tvb, offset+2,
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mstp_tvb_pdu_len-2, mstp_frame_pdu_len);
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}
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if (!(dissector_try_uint(subdissector_table, (vendorid<<16) + mstp_frame_type,
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next_tvb, pinfo, tree))) {
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/* Unknown function - dissect the payload as data */
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call_data_dissector(next_tvb, pinfo, tree);
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}
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#if defined(BACNET_MSTP_CHECKSUM_VALIDATE)
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/* 16-bit checksum - calculate to validate */
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max_len = MIN(mstp_frame_pdu_len, mstp_tvb_pdu_len);
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for (i = 0; i < max_len; i++) {
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crcdata = tvb_get_guint8(tvb, offset+i);
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crc16 = CRC_Calc_Data(crcdata, crc16);
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}
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crc16 = ~crc16;
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/* convert it to on-the-wire format */
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crc16 = g_htons(crc16);
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proto_tree_add_checksum(subtree, tvb, offset+mstp_frame_pdu_len, hf_mstp_frame_crc16, hf_mstp_frame_checksum_status, &ei_mstp_frame_checksum_bad, pinfo, crc16,
|
|
ENC_BIG_ENDIAN, PROTO_CHECKSUM_VERIFY);
|
|
#else
|
|
proto_tree_add_checksum(subtree, tvb, offset+mstp_frame_pdu_len, hf_mstp_frame_crc16, hf_mstp_frame_checksum_status, &ei_mstp_frame_checksum_bad, pinfo, 0,
|
|
ENC_BIG_ENDIAN, PROTO_CHECKSUM_NO_FLAGS);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static int
|
|
dissect_mstp_wtap(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *subtree;
|
|
gint offset = 0;
|
|
#ifdef BACNET_MSTP_SUMMARY_IN_TREE
|
|
guint8 mstp_frame_type = 0;
|
|
guint8 mstp_frame_source = 0;
|
|
guint8 mstp_frame_destination = 0;
|
|
#endif
|
|
|
|
/* set the MS/TP MAC address in the source/destination */
|
|
set_address_tvb(&pinfo->dl_dst, mstp_address_type, 1, tvb, offset+3);
|
|
copy_address_shallow(&pinfo->dst, &pinfo->dl_dst);
|
|
set_address_tvb(&pinfo->dl_src, mstp_address_type, 1, tvb, offset+4);
|
|
copy_address_shallow(&pinfo->src, &pinfo->dl_src);
|
|
|
|
#ifdef BACNET_MSTP_SUMMARY_IN_TREE
|
|
mstp_frame_type = tvb_get_guint8(tvb, offset+2);
|
|
mstp_frame_destination = tvb_get_guint8(tvb, offset+3);
|
|
mstp_frame_source = tvb_get_guint8(tvb, offset+4);
|
|
ti = proto_tree_add_protocol_format(tree, proto_mstp, tvb, offset, 8,
|
|
"BACnet MS/TP, Src (%u), Dst (%u), %s",
|
|
mstp_frame_source, mstp_frame_destination,
|
|
mstp_frame_type_text(mstp_frame_type));
|
|
#else
|
|
ti = proto_tree_add_item(tree, proto_mstp, tvb, offset, 8, ENC_NA);
|
|
#endif
|
|
subtree = proto_item_add_subtree(ti, ett_bacnet_mstp);
|
|
proto_tree_add_item(subtree, hf_mstp_preamble_55, tvb,
|
|
offset, 1, ENC_LITTLE_ENDIAN);
|
|
proto_tree_add_item(subtree, hf_mstp_preamble_FF, tvb,
|
|
offset+1, 1, ENC_LITTLE_ENDIAN);
|
|
dissect_mstp(tvb, pinfo, tree, subtree, offset+2);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
void
|
|
proto_register_mstp(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_mstp_preamble_55,
|
|
{ "Preamble 55", "mstp.preamble_55",
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
"MS/TP Preamble 55", HFILL }
|
|
},
|
|
{ &hf_mstp_preamble_FF,
|
|
{ "Preamble FF", "mstp.preamble_FF",
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
"MS/TP Preamble FF", HFILL }
|
|
},
|
|
{ &hf_mstp_frame_type,
|
|
{ "Frame Type", "mstp.frame_type",
|
|
FT_UINT8, BASE_DEC, VALS(bacnet_mstp_frame_type_name), 0,
|
|
"MS/TP Frame Type", HFILL }
|
|
},
|
|
{ &hf_mstp_frame_destination,
|
|
{ "Destination Address", "mstp.dst",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
"Destination MS/TP MAC Address", HFILL }
|
|
},
|
|
{ &hf_mstp_frame_source,
|
|
{ "Source Address", "mstp.src",
|
|
FT_UINT8, BASE_DEC, NULL, 0,
|
|
"Source MS/TP MAC Address", HFILL }
|
|
},
|
|
{ &hf_mstp_frame_vendor_id,
|
|
{ "VendorID", "mstp.vendorid",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
"MS/TP Vendor ID of proprietary frametypes", HFILL }
|
|
},
|
|
{ &hf_mstp_frame_pdu_len,
|
|
{ "Length", "mstp.len",
|
|
FT_UINT16, BASE_DEC, NULL, 0,
|
|
"MS/TP Data Length", HFILL }
|
|
},
|
|
{ &hf_mstp_frame_crc8,
|
|
{ "Header CRC", "mstp.hdr_crc",
|
|
FT_UINT8, BASE_HEX, NULL, 0,
|
|
"MS/TP Header CRC", HFILL }
|
|
},
|
|
{ &hf_mstp_frame_crc16,
|
|
{ "Data CRC", "mstp.data_crc",
|
|
FT_UINT16, BASE_HEX, NULL, 0,
|
|
"MS/TP Data CRC", HFILL }
|
|
},
|
|
{ &hf_mstp_frame_checksum_status,
|
|
{ "Checksum status", "mstp.checksum.status",
|
|
FT_UINT8, BASE_NONE, VALS(proto_checksum_vals), 0x0,
|
|
NULL, HFILL }
|
|
},
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_bacnet_mstp,
|
|
&ett_bacnet_mstp_checksum
|
|
};
|
|
|
|
static ei_register_info ei[] = {
|
|
{ &ei_mstp_frame_pdu_len, { "mstp.len.bad", PI_MALFORMED, PI_ERROR, "Length field value goes past the end of the payload", EXPFILL }},
|
|
{ &ei_mstp_frame_checksum_bad, { "mstp.checksum_bad.expert", PI_CHECKSUM, PI_WARN, "Bad Checksum", EXPFILL }},
|
|
};
|
|
|
|
expert_module_t* expert_mstp;
|
|
|
|
proto_mstp = proto_register_protocol("BACnet MS/TP",
|
|
"BACnet MS/TP", "mstp");
|
|
|
|
proto_register_field_array(proto_mstp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
expert_mstp = expert_register_protocol(proto_mstp);
|
|
expert_register_field_array(expert_mstp, ei, array_length(ei));
|
|
|
|
mstp_handle = register_dissector("mstp", dissect_mstp_wtap, proto_mstp);
|
|
|
|
subdissector_table = register_dissector_table("mstp.vendor_frame_type",
|
|
"MSTP Vendor specific Frametypes", proto_mstp, FT_UINT24, BASE_DEC);
|
|
/* Table_type: (Vendor ID << 16) + Frametype */
|
|
|
|
mstp_address_type = address_type_dissector_register("AT_MSTP", "BACnet MS/TP Address", mstp_to_str, mstp_str_len, NULL, mstp_col_filter_str, mstp_len, NULL, NULL);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_mstp(void)
|
|
{
|
|
dissector_handle_t bacnet_handle;
|
|
|
|
dissector_add_uint("wtap_encap", WTAP_ENCAP_BACNET_MS_TP, mstp_handle);
|
|
dissector_add_uint("wtap_encap", WTAP_ENCAP_BACNET_MS_TP_WITH_PHDR, mstp_handle);
|
|
|
|
bacnet_handle = find_dissector("bacnet");
|
|
|
|
dissector_add_uint("mstp.vendor_frame_type", (0/*VendorID ASHRAE*/ << 16) + MSTP_BACNET_DATA_EXPECTING_REPLY, bacnet_handle);
|
|
dissector_add_uint("mstp.vendor_frame_type", (0/*VendorID ASHRAE*/ << 16) + MSTP_BACNET_DATA_NOT_EXPECTING_REPLY, bacnet_handle);
|
|
dissector_add_uint("mstp.vendor_frame_type", (0/*VendorID ASHRAE*/ << 16) + MSTP_BACNET_EXTENDED_DATA_EXPECTING_REPLY, bacnet_handle);
|
|
dissector_add_uint("mstp.vendor_frame_type", (0/*VendorID ASHRAE*/ << 16) + MSTP_BACNET_EXTENDED_DATA_NOT_EXPECTING_REPLY, bacnet_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|