01844e151a
the number of bytes in the packet or subset of the packet is the reported length, tvb_length() just gives you the amount of that data that was actually captured. Include <glib.h>, not <gmodule.h>, even in plugins. Fix the version numbers in the rc files. svn path=/trunk/; revision=21960
576 lines
18 KiB
C
576 lines
18 KiB
C
/* mac_hd_type1_decoder.c
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* WiMax MAC Type I Signaling Header decoder
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*
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* Copyright (c) 2007 by Intel Corporation.
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*
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* Author: Lu Pan <lu.pan@intel.com>
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*
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* $Id$
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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 1999 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* TODO: Add FT_UINT24 and FT_INT24 cases to gtk_widget_get_toplevel()
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* to prevent having to make all the changes from BASE_DEC to BASE_HEX
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* made to this file today: 10/20/06.
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*/
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/* Include files */
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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/*
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#define DEBUG
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*/
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#include "moduleinfo.h"
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/prefs.h>
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extern gint proto_mac_header_generic_decoder;
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/* forward reference */
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void proto_register_mac_header_type_1(void);
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void dissect_mac_header_type_1_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static gint proto_mac_header_type_1_decoder = -1;
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static gint ett_mac_header_type_1_decoder = -1;
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static gint hf_mac_header_type_1_value_bytes = -1;
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#define WIMAX_MAC_HEADER_SIZE 6
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/* WiMax MAC Header Type I Sub Types */
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enum
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{
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BR_INCREMENTAL, /* 0 */
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BR_AGGREGATE, /* 1 */
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PHY_CHANNEL_REPORT, /* 2 */
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BR_WITH_UL_TX_POWER_REPORT,/* 3 */
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BR_AND_CINR_REPORT, /* 4 */
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BR_WITH_UL_SLEEP_CONTROL, /* 5 */
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SN_REPORT, /* 6 */
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CQICH_ALLOCATION_REQUEST, /* 7 */
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TYPE_I_SUBTYPE_MAX
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} TYPE_I_SUBTYPE;
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static char *type1_subtype_abbrv[TYPE_I_SUBTYPE_MAX] =
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{
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"BR INCREMENTAL", /* 0 */
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"BR AGGREGATE", /* 1 */
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"PHY CHANNEL_REPORT", /* 2 */
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"BR WITH UL TX POWER_REPORT",/* 3 */
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"BR AND CINR REPORT", /* 4 */
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"BR WITH UL SLEEP CONTROL", /* 5 */
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"SN REPORT", /* 6 */
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"CQICH ALLOCATION REQUEST" /* 7 */
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};
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#define WIMAX_MAC_HEADER_TYPE_1_SUB_TYPE_MASK 0x38
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/* WIMAX MAC HEADER TYPE I FILEDS */
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/* 1st to 3rd bytes */
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/* Common Fields */
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#define WIMAX_MAC_HEADER_TYPE_1_HT 0x800000
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#define WIMAX_MAC_HEADER_TYPE_1_EC 0x400000
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#define WIMAX_MAC_HEADER_TYPE_1_TYPE 0x380000
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/* Bandwidth Request Incremental Header (type 0) &
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Bandwidth Request Aggregate Header (type 1) only */
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#define WIMAX_MAC_HEADER_TYPE_1_BR 0x07FFFF
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/* PHY Channel Report Header (type 2) only */
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#define WIMAX_MAC_HEADER_TYPE_1_DIUC 0x078000
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#define WIMAX_MAC_HEADER_TYPE_1_UL_TX_PWR 0x007F80
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#define WIMAX_MAC_HEADER_TYPE_1_UL_HDRM 0x00007E
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#define WIMAX_MAC_HEADER_TYPE_1_RSV_2 0x000001
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/* Bandwidth Request and UL TX Power Report Header (type 3),
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Bandwidth Request and CINR Report Header (type 4), &
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Bandwidth Request and Uplink Sleep Control Header (type 5) only */
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#define WIMAX_MAC_HEADER_TYPE_1_BR_3 0x07FF00
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/* Bandwidth Request and UL TX Power Report Header (type 3) only */
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#define WIMAX_MAC_HEADER_TYPE_1_UL_TX_PWR_3 0x0000FF
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/* Bandwidth Request and CINR Report Header (type 4) only */
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#define WIMAX_MAC_HEADER_TYPE_1_CINR 0x0000FE
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#define WIMAX_MAC_HEADER_TYPE_1_DCI 0x000001
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/* Bandwidth Request and Uplink Sleep Control Header (type 5) only */
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#define WIMAX_MAC_HEADER_TYPE_1_PSCID 0x0000FC
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#define WIMAX_MAC_HEADER_TYPE_1_OP 0x000002
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#define WIMAX_MAC_HEADER_TYPE_1_RSV_5 0x000001
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/* SN Report Header (type 6) only */
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#define WIMAX_MAC_HEADER_TYPE_1_LAST 0x040000
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#define WIMAX_MAC_HEADER_TYPE_1_SDU_SN1 0x03F000
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#define WIMAX_MAC_HEADER_TYPE_1_SDU_SN2 0x000FC0
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#define WIMAX_MAC_HEADER_TYPE_1_SDU_SN3 0x00003F
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/* CQICH Allocation Request (type 7) only */
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#define WIMAX_MAC_HEADER_TYPE_1_FB_TYPE 0x070000
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#define WIMAX_MAC_HEADER_TYPE_1_FBSSI 0x008000
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#define WIMAX_MAC_HEADER_TYPE_1_PERIOD 0x007000
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#define WIMAX_MAC_HEADER_TYPE_1_RSV_7 0x000FFF
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/* 4th to 6th bytes */
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//#define WIMAX_MAC_HEADER_TYPE_1_CID 0xFFFF
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//#define WIMAX_MAC_HEADER_TYPE_1_HCS 0xFF
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/* Common Fields */
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static int hf_mac_header_type_1_ht = -1;
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static int hf_mac_header_type_1_ec = -1;
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static int hf_mac_header_type_1_type = -1;
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/* type 0 & type 1 only */
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static int hf_mac_header_type_1_br = -1;
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/* type 3, type 4, & type 5 only */
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static int hf_mac_header_type_1_br_3 = -1;
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/* type 2 only */
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static int hf_mac_header_type_1_diuc = -1;
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static int hf_mac_header_type_1_ultxpwr = -1;
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static int hf_mac_header_type_1_ulhdrm = -1;
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static int hf_mac_header_type_1_rsv_2 = -1;
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/* type 3 only */
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static int hf_mac_header_type_1_ultxpwr_3 = -1;
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/* type 4 only */
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static int hf_mac_header_type_1_cinr = -1;
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static int hf_mac_header_type_1_dci = -1;
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/* type 5 only */
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static int hf_mac_header_type_1_pscid = -1;
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static int hf_mac_header_type_1_op = -1;
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static int hf_mac_header_type_1_rsv_5 = -1;
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/* type 6 only */
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static int hf_mac_header_type_1_last = -1;
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static int hf_mac_header_type_1_sdu_sn1 = -1;
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static int hf_mac_header_type_1_sdu_sn2 = -1;
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static int hf_mac_header_type_1_sdu_sn3 = -1;
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/* type 7 only */
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static int hf_mac_header_type_1_fb_type = -1;
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static int hf_mac_header_type_1_fbssi = -1;
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static int hf_mac_header_type_1_period = -1;
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static int hf_mac_header_type_1_rsv_7 = -1;
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/* Common Fields */
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static int hf_mac_header_type_1_cid = -1;
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static int hf_mac_header_type_1_hcs = -1;
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/* MAC Header Type I Sub-Types */
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static const value_string sub_types[] =
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{
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{ BR_INCREMENTAL, "Bandwidth Request Incremental" },
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{ BR_AGGREGATE, "Bandwidth Request Aggregate" },
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{ PHY_CHANNEL_REPORT, "PHY Channel Report" },
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{ BR_WITH_UL_TX_POWER_REPORT, "Bandwidth Request with UL TX Power Report" },
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{ BR_AND_CINR_REPORT, "Bandwidth Request and CINR Report" },
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{ BR_WITH_UL_SLEEP_CONTROL, "Bandwidth Request with Sleep Control" },
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{ SN_REPORT, "SN Report" },
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{ CQICH_ALLOCATION_REQUEST, "CQICH Allocation Request" },
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{ 0, NULL}
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};
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/* Feedback Types (need to be changed for type I) */
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static const value_string fb_types[] =
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{
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{ 0, "CQI and MIMO Feedback" },
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{ 1, "DL average CINR" },
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{ 2, "MIMO Coefficients Feedback" },
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{ 3, "Preferred DL Channel DIUC Feedback" },
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{ 4, "UL Transmission Power" },
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{ 5, "PHY Channel Feedback" },
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{ 6, "AMC Band Indication Bitmap" },
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{ 7, "Life Span of Short-term Precoding Feedback" },
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{ 0, NULL}
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};
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/* DCD Change Indication messages */
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static const value_string dci_msgs[] =
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{
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{ 0, "Match DCD Change Count" },
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{ 1, "Mismatch DCD Change Count" },
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{ 0, NULL}
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};
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/* Operation messages */
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static const value_string op_msgs[] =
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{
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{ 0, "Deactivate Power Saving Class" },
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{ 1, "Activate Power Saving Class" },
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{ 0, NULL}
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};
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/* Last ARQ BSN or SDU SN Indication messages */
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static const value_string last_msgs[] =
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{
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{ 0, "First three connections" },
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{ 1, "Last three connections" },
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{ 0, NULL}
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};
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/* TLV display */
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static hf_register_info hf[] =
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{
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{
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&hf_mac_header_type_1_value_bytes,
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{
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"Values", "wimax.type1ValueBytes",
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FT_BYTES, BASE_HEX, NULL, 0x0,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_ht,
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{
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"MAC Header Type", "wimax.type1Ht",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_HT,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_ec,
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{
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"MAC Encryption Control", "wimax.type1Ec",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_EC,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_type,
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{
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"MAC Sub-Type", "wimax.type1Type",
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FT_UINT24, BASE_HEX, VALS(sub_types), WIMAX_MAC_HEADER_TYPE_1_TYPE,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_br,
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{
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"Bandwidth Request", "wimax.type1Br",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_BR,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_br_3,
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{
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"Bandwidth Request", "wimax.type1Br3",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_BR_3,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_fb_type,
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{
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"Feedback Type", "wimax.type1FbType",
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FT_UINT24, BASE_HEX, VALS(fb_types), WIMAX_MAC_HEADER_TYPE_1_FB_TYPE,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_diuc,
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{
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"Preferred DIUC Index", "wimax.type1Diuc",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_DIUC,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_ultxpwr,
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{
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"UL TX Power", "wimax.type1UlTxPwr",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_UL_TX_PWR,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_ultxpwr_3,
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{
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"UL TX Power", "wimax.type1UlTxPwr3",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_UL_TX_PWR_3,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_ulhdrm,
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{
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"Headroom to UL Max Power Level", "wimax.type1HdRm",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_UL_HDRM,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_cinr,
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{
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"CINR Value", "wimax.type1Cinr",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_CINR,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_dci,
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{
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"DCD Change Indication", "wimax.type1Dci",
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FT_UINT24, BASE_HEX, VALS(dci_msgs), WIMAX_MAC_HEADER_TYPE_1_DCI,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_pscid,
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{
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"Power Saving Class ID", "wimax.type1PsCid",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_PSCID,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_op,
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{
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"Operation", "wimax.type1Op",
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FT_UINT24, BASE_HEX, VALS(op_msgs), WIMAX_MAC_HEADER_TYPE_1_OP,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_last,
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{
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"Last ARQ BSN or SDU SN", "wimax.type1Last",
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FT_UINT24, BASE_HEX, VALS(last_msgs), WIMAX_MAC_HEADER_TYPE_1_LAST,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_sdu_sn1,
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{
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"ARQ BSN or MAC SDU SN (1)", "wimax.type1SduSn1",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_SDU_SN1,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_sdu_sn2,
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{
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"ARQ BSN or MAC SDU SN (2)", "wimax.type1SduSn2",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_SDU_SN2,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_sdu_sn3,
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{
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"ARQ BSN or MAC SDU SN (3)", "wimax.type1SduSn3",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_SDU_SN3,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_fbssi,
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{
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"FBSS Indicator", "wimax.type1Fbssi",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_FBSSI,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_period,
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{
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"Preferred CQICH Allocation Period", "wimax.type1Period",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_PERIOD,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_rsv_2,
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{
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"Reserved", "wimax.type1Rsv2",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_RSV_2,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_rsv_5,
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{
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"Reserved", "wimax.type1Rsv5",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_RSV_5,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_rsv_7,
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{
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"Reserved", "wimax.type1Rsv7",
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FT_UINT24, BASE_DEC, NULL, WIMAX_MAC_HEADER_TYPE_1_RSV_7,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_cid,
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{
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"Connection ID", "wimax.type1Cid",
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FT_UINT16, BASE_DEC, NULL, 0x0,
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"", HFILL
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}
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},
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{
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&hf_mac_header_type_1_hcs,
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{
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"Header Check Sequence", "wimax.type1Hcs",
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FT_UINT8, BASE_HEX, NULL, 0x0,
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"", HFILL
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}
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}
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};
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/* Setup protocol subtree array */
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static gint *ett[] =
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{
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&ett_mac_header_type_1_decoder,
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};
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/* Register Wimax Mac Header Type II Protocol and Dissector */
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void proto_register_mac_header_type_1(void)
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{
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if (proto_mac_header_type_1_decoder == -1)
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{
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proto_mac_header_type_1_decoder = proto_mac_header_generic_decoder;
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proto_register_field_array(proto_mac_header_type_1_decoder, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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register_dissector("mac_header_type_1_handler", dissect_mac_header_type_1_decoder, -1);
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}
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void dissect_mac_header_type_1_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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gint tvb_len, offset = 0;
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guint first_byte, sub_type;
|
|
proto_item *parent_item = NULL;
|
|
proto_item *ti = NULL;
|
|
proto_tree *ti_tree = NULL;
|
|
|
|
if (tree)
|
|
{ /* we are being asked for details */
|
|
/* Get the tvb reported length */
|
|
tvb_len = tvb_reported_length(tvb);
|
|
/* display the MAC Type I Header message */
|
|
ti = proto_tree_add_protocol_format(tree, proto_mac_header_type_1_decoder, tvb, offset, tvb_len, "Mac Type I Header (%u bytes)", WIMAX_MAC_HEADER_SIZE);
|
|
/* add subtree */
|
|
ti_tree = proto_item_add_subtree(ti, ett_mac_header_type_1_decoder);
|
|
if(tvb_len < WIMAX_MAC_HEADER_SIZE)
|
|
{
|
|
/* display the MAC Type I Header in Hex */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_value_bytes, tvb, offset, tvb_len, FALSE);
|
|
return;
|
|
}
|
|
#ifdef DEBUG
|
|
/* update the info column */
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
{
|
|
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, type1_subtype_abbrv[]);
|
|
}
|
|
#endif
|
|
/* get the parent */
|
|
parent_item = proto_tree_get_parent(tree);
|
|
/* Decode and display the first 3 bytes of the header */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_ht, tvb, offset, 3, FALSE);
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_ec, tvb, offset, 3, FALSE);
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_type, tvb, offset, 3, FALSE);
|
|
/* Get the first byte */
|
|
first_byte = tvb_get_guint8(tvb, offset);
|
|
/* get the sub Type */
|
|
sub_type = ((first_byte & WIMAX_MAC_HEADER_TYPE_1_SUB_TYPE_MASK)>>3);
|
|
if(sub_type < TYPE_I_SUBTYPE_MAX)
|
|
{
|
|
/* update the info column */
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, type1_subtype_abbrv[sub_type]);
|
|
}
|
|
else
|
|
{
|
|
/* update the info column */
|
|
if (check_col(pinfo->cinfo, COL_INFO))
|
|
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Unknown type 1 subtype");
|
|
/* display MAC Header Type I Subtype */
|
|
proto_tree_add_protocol_format(ti_tree, proto_mac_header_type_1_decoder, tvb, offset, tvb_len, "Unknown type 1 subtype: %u", sub_type);
|
|
/* display the MAC Type I Header in Hex */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_value_bytes, tvb, offset, tvb_len, FALSE);
|
|
return;
|
|
}
|
|
/* add the MAC header info */
|
|
proto_item_append_text(parent_item, "%s", type1_subtype_abbrv[sub_type]);
|
|
switch (sub_type)
|
|
{
|
|
case BR_INCREMENTAL:
|
|
case BR_AGGREGATE:
|
|
/* Decode and display the Bandwidth Request */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_br, tvb, offset, 3, FALSE);
|
|
break;
|
|
case PHY_CHANNEL_REPORT:
|
|
/* Decode and display the Preferred-DIUC */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_diuc, tvb, offset, 3, FALSE);
|
|
/* Decode and display the UL TX Power */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_ultxpwr, tvb, offset, 3, FALSE);
|
|
/* Decode and display the UL Headroom */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_ulhdrm, tvb, offset, 3, FALSE);
|
|
/* Decode and display the reserved filed */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_rsv_2, tvb, offset, 3, FALSE);
|
|
break;
|
|
case BR_WITH_UL_TX_POWER_REPORT:
|
|
/* Decode and display the Bandwidth Request */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_br_3, tvb, offset, 3, FALSE);
|
|
/* Decode and display the UL TX Power */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_ultxpwr_3, tvb, offset, 3, FALSE);
|
|
break;
|
|
case BR_AND_CINR_REPORT:
|
|
/* Decode and display the Bandwidth Request */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_br_3, tvb, offset, 3, FALSE);
|
|
/* Decode and display the CINR */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_cinr, tvb, offset, 3, FALSE);
|
|
/* Decode and display the DCD Change Indication */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_dci, tvb, offset, 3, FALSE);
|
|
break;
|
|
case BR_WITH_UL_SLEEP_CONTROL:
|
|
/* Decode and display the Bandwidth Request */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_br_3, tvb, offset, 3, FALSE);
|
|
/* Decode and display the Power Saving Class ID */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_pscid, tvb, offset, 3, FALSE);
|
|
/* Decode and display the Operation */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_op, tvb, offset, 3, FALSE);
|
|
/* Decode and display the reserved filed */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_rsv_5, tvb, offset, 3, FALSE);
|
|
break;
|
|
case SN_REPORT:
|
|
/* Decode and display the Last field */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_last, tvb, offset, 3, FALSE);
|
|
/* Decode and display the SDU SN1 */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_sdu_sn1, tvb, offset, 3, FALSE);
|
|
/* Decode and display the SDU SN2 */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_sdu_sn2, tvb, offset, 3, FALSE);
|
|
/* Decode and display the SDU SN3 */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_sdu_sn3, tvb, offset, 3, FALSE);
|
|
break;
|
|
case CQICH_ALLOCATION_REQUEST:
|
|
/* Decode and display the Feedback Type */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_fb_type, tvb, offset, 3, FALSE);
|
|
/* Decode and display the FBSSI */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_fbssi, tvb, offset, 3, FALSE);
|
|
/* Decode and display the Prreferred-period */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_period, tvb, offset, 3, FALSE);
|
|
/* Decode and display the reserved filed */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_rsv_7, tvb, offset, 3, FALSE);
|
|
break;
|
|
}
|
|
/* Decode and display the CID */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_cid, tvb, (offset+3), 2, FALSE);
|
|
/* Decode and display the HCS */
|
|
proto_tree_add_item(ti_tree, hf_mac_header_type_1_hcs, tvb, (offset+5), 1, FALSE);
|
|
}
|
|
}
|