forked from osmocom/wireshark
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
251 lines
8.2 KiB
C
251 lines
8.2 KiB
C
/* msg_dsc.c
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* WiMax MAC Management DSC-REQ/RSP/ACK Messages 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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/* 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 <glib.h>
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#include <epan/packet.h>
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#include "wimax_tlv.h"
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#include "wimax_mac.h"
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#include "wimax_utils.h"
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extern gint proto_mac_mgmt_msg_dsa_decoder;
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/* forward reference */
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void proto_register_mac_mgmt_msg_dsc(void);
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void dissect_mac_mgmt_msg_dsc_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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void dissect_mac_mgmt_msg_dsc_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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void dissect_mac_mgmt_msg_dsc_ack_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
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static gint proto_mac_mgmt_msg_dsc_decoder = -1;
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static gint ett_mac_mgmt_msg_dsc_req_decoder = -1;
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static gint ett_mac_mgmt_msg_dsc_rsp_decoder = -1;
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static gint ett_mac_mgmt_msg_dsc_ack_decoder = -1;
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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_mgmt_msg_dsc_req_decoder,
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&ett_mac_mgmt_msg_dsc_rsp_decoder,
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&ett_mac_mgmt_msg_dsc_ack_decoder
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};
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static gchar *dsc_msgs[] =
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{
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"Dynamic Service Change Request (DSC-REQ)",
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"Dynamic Service Change Response (DSC-RSP)",
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"Dynamic Service Change Acknowledge (DSC-ACK)"
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};
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/* fix fields */
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static gint hf_dsc_req_message_type = -1;
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static gint hf_dsc_transaction_id = -1;
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static gint hf_dsc_rsp_message_type = -1;
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static gint hf_dsc_confirmation_code = -1;
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static gint hf_dsc_ack_message_type = -1;
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/* DSx display */
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static hf_register_info hf[] =
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{
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{
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&hf_dsc_ack_message_type,
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{
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"MAC Management Message Type", "wimax.macmgtmsgtype.dsc_ack",
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FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
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}
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},
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{
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&hf_dsc_req_message_type,
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{
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"MAC Management Message Type", "wimax.macmgtmsgtype.dsc_req",
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FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
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}
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},
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{
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&hf_dsc_rsp_message_type,
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{
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"MAC Management Message Type", "wimax.macmgtmsgtype.dsc_rsp",
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FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
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}
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},
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{
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&hf_dsc_confirmation_code,
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{
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"Confirmation code", "wimax.dsc.confirmation_code",
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FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
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}
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},
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{
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&hf_dsc_transaction_id,
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{
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"Transaction ID", "wimax.dsc.transaction_id",
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FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL
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}
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}
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};
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/* Register Wimax Mac Payload Protocol and Dissector */
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void proto_register_mac_mgmt_msg_dsc(void)
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{
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if (proto_mac_mgmt_msg_dsc_decoder == -1)
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{
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proto_mac_mgmt_msg_dsc_decoder = proto_mac_mgmt_msg_dsa_decoder;
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proto_register_field_array(proto_mac_mgmt_msg_dsc_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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}
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void dissect_mac_mgmt_msg_dsc_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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guint offset = 0;
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guint tvb_len, payload_type;
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guint dsc_transaction_id;
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proto_item *dsc_item = NULL;
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proto_tree *dsc_tree = NULL;
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if(tree)
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{ /* we are being asked for details */
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/* get the message type */
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payload_type = tvb_get_guint8(tvb, offset);
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/* ensure the message type is DSC REQ/RSP/ACK */
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if(payload_type != MAC_MGMT_MSG_DSC_REQ)
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return;
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/* Get the tvb reported length */
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tvb_len = tvb_reported_length(tvb);
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/* display MAC message type */
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dsc_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsc_decoder, tvb, offset, tvb_len, "%s (%u bytes)", dsc_msgs[payload_type - MAC_MGMT_MSG_DSC_REQ], tvb_len);
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/* add MAC DSx subtree */
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dsc_tree = proto_item_add_subtree(dsc_item, ett_mac_mgmt_msg_dsc_req_decoder);
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/* Decode and display the Uplink Channel Descriptor (UCD) */
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/* display the Message Type */
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proto_tree_add_item(dsc_tree, hf_dsc_req_message_type, tvb, offset, 1, FALSE);
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/* move to next field */
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offset++;
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/* get the Configuration Change Count */
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dsc_transaction_id = tvb_get_ntohs(tvb, offset);
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/* display the Transaction ID */
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proto_tree_add_item(dsc_tree, hf_dsc_transaction_id, tvb, offset, 2, FALSE);
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/* move to next field */
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offset += 2;
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/* process DSC REQ message TLV Encode Information */
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wimax_common_tlv_encoding_decoder(tvb_new_subset(tvb, offset, (tvb_len - offset), (tvb_len - offset)), pinfo, dsc_tree);
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}
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}
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void dissect_mac_mgmt_msg_dsc_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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guint offset = 0;
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guint tvb_len, payload_type;
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guint dsc_transaction_id;
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proto_item *dsc_item = NULL;
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proto_tree *dsc_tree = NULL;
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if(tree)
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{ /* we are being asked for details */
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/* get the message type */
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payload_type = tvb_get_guint8(tvb, offset);
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/* ensure the message type is DSC REQ/RSP/ACK */
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if(payload_type != MAC_MGMT_MSG_DSC_RSP)
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return;
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/* Get the tvb reported length */
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tvb_len = tvb_reported_length(tvb);
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/* display MAC message type */
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dsc_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsc_decoder, tvb, offset, tvb_len, "%s (%u bytes)", dsc_msgs[payload_type - MAC_MGMT_MSG_DSC_REQ], tvb_len);
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/* add MAC DSx subtree */
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dsc_tree = proto_item_add_subtree(dsc_item, ett_mac_mgmt_msg_dsc_rsp_decoder);
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/* Decode and display the Uplink Channel Descriptor (UCD) */
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/* display the Message Type */
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proto_tree_add_item(dsc_tree, hf_dsc_rsp_message_type, tvb, offset, 1, FALSE);
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/* move to next field */
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offset++;
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/* get the Configuration Change Count */
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dsc_transaction_id = tvb_get_ntohs(tvb, offset);
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/* display the Transaction ID */
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proto_tree_add_item(dsc_tree, hf_dsc_transaction_id, tvb, offset, 2, FALSE);
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/* move to next field */
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offset += 2;
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/* display the Confirmation Code */
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proto_tree_add_item(dsc_tree, hf_dsc_confirmation_code, tvb, offset, 1, FALSE);
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/* move to next field */
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offset++;
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/* process DSC RSP message TLV Encode Information */
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wimax_common_tlv_encoding_decoder(tvb_new_subset(tvb, offset, (tvb_len - offset), (tvb_len - offset)), pinfo, dsc_tree);
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}
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}
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void dissect_mac_mgmt_msg_dsc_ack_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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guint offset = 0;
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guint tvb_len, payload_type;
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guint dsc_transaction_id;
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proto_item *dsc_item = NULL;
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proto_tree *dsc_tree = NULL;
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if(tree)
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{ /* we are being asked for details */
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/* get the message type */
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payload_type = tvb_get_guint8(tvb, offset);
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/* ensure the message type is DSC REQ/RSP/ACK */
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if((payload_type < MAC_MGMT_MSG_DSC_REQ) || (payload_type > MAC_MGMT_MSG_DSC_ACK))
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return;
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/* Get the tvb reported length */
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tvb_len = tvb_reported_length(tvb);
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/* display MAC message type */
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dsc_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_dsc_decoder, tvb, offset, tvb_len, "%s (%u bytes)", dsc_msgs[payload_type - MAC_MGMT_MSG_DSC_REQ], tvb_len);
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/* add MAC DSx subtree */
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dsc_tree = proto_item_add_subtree(dsc_item, ett_mac_mgmt_msg_dsc_ack_decoder);
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/* Decode and display the Uplink Channel Descriptor (UCD) */
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/* display the Message Type */
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proto_tree_add_item(dsc_tree, hf_dsc_ack_message_type, tvb, offset, 1, FALSE);
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/* move to next field */
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offset++;
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/* get the Configuration Change Count */
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dsc_transaction_id = tvb_get_ntohs(tvb, offset);
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/* display the Transaction ID */
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proto_tree_add_item(dsc_tree, hf_dsc_transaction_id, tvb, offset, 2, FALSE);
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/* move to next field */
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offset += 2;
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/* display the Confirmation Code */
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proto_tree_add_item(dsc_tree, hf_dsc_confirmation_code, tvb, offset, 1, FALSE);
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/* move to next field */
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offset++;
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/* process DSC ACK message TLV Encode Information */
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wimax_common_tlv_encoding_decoder(tvb_new_subset(tvb, offset, (tvb_len - offset), (tvb_len - offset)), pinfo, dsc_tree);
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}
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}
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