152 lines
4.3 KiB
C
152 lines
4.3 KiB
C
/* msg_prc_lt_ctrl.c
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* WiMax MAC Management PRC-LT-CTRL Message decoders
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*
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* Copyright (c) 2007 by Intel Corporation.
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*
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* Author: John R. Underwood <junderx@yahoo.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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#include <glib.h>
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#include <epan/packet.h>
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#include "crc.h"
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#include "wimax_tlv.h"
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#include "wimax_mac.h"
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extern gint man_ofdma;
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static gint proto_mac_mgmt_msg_prc_lt_ctrl_decoder = -1;
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static gint ett_mac_mgmt_msg_prc_lt_ctrl_decoder = -1;
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/* PRC-LT-CTRL fields */
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static gint hf_prc_lt_ctrl_message_type = -1;
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static gint hf_prc_lt_ctrl_precoding = -1;
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static gint hf_prc_lt_ctrl_precoding_delay = -1;
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static gint hf_prc_lt_ctrl_invalid_tlv = -1;
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static const value_string vals_turn_on[] = {
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{0, "Turn off"},
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{1, "Turn on"},
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{0, NULL}
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};
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/* Decode PRC-LT-CTRL messages. */
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void dissect_mac_mgmt_msg_prc_lt_ctrl_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, 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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proto_item *prc_lt_ctrl_item = NULL;
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proto_tree *prc_lt_ctrl_tree = NULL;
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/* Ensure the right payload type */
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payload_type = tvb_get_guint8(tvb, 0);
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if(payload_type != MAC_MGMT_MSG_PRC_LT_CTRL)
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{
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return;
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}
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if (tree)
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{ /* we are being asked for details */
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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 payload type PRC-LT-CTRL */
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prc_lt_ctrl_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_prc_lt_ctrl_decoder, tvb, 0, tvb_len, "MAC Management Message, PRC-LT-CTRL (65)");
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/* add MAC PRC-LT-CTRL subtree */
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prc_lt_ctrl_tree = proto_item_add_subtree(prc_lt_ctrl_item, ett_mac_mgmt_msg_prc_lt_ctrl_decoder);
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/* display the Message Type */
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proto_tree_add_item(prc_lt_ctrl_tree, hf_prc_lt_ctrl_message_type, tvb, offset, 1, FALSE);
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offset ++;
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/* display whether to Setup or Tear-down the
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* long-term MIMO precoding delay */
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proto_tree_add_item(prc_lt_ctrl_tree, hf_prc_lt_ctrl_precoding, tvb, offset, 1, FALSE);
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/* display the Precoding Delay */
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proto_tree_add_item(prc_lt_ctrl_tree, hf_prc_lt_ctrl_precoding_delay, tvb, offset, 1, FALSE);
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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_prc_lt_ctrl(void)
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{
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/* PRC-LT-CTRL fields display */
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static hf_register_info hf[] =
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{
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{
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&hf_prc_lt_ctrl_message_type,
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{
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"MAC Management Message Type", "wmx.macmgtmsgtype.prc_lt_ctrl",
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FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL
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}
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},
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{
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&hf_prc_lt_ctrl_invalid_tlv,
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{
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"Invalid TLV", "wmx.prc_lt_ctrl.invalid_tlv",
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FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL
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}
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},
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{
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&hf_prc_lt_ctrl_precoding,
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{
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"Setup/Tear-down long-term precoding with feedback",
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"wimax.prc_lt_ctrl.precoding",
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FT_UINT8, BASE_DEC, VALS(vals_turn_on), 0x80, NULL, HFILL
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}
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},
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{
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&hf_prc_lt_ctrl_precoding_delay,
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{
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"BS precoding application delay",
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"wimax.prc_lt_ctrl.precoding_delay",
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FT_UINT8, BASE_DEC, NULL, 0x60, NULL, 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_mgmt_msg_prc_lt_ctrl_decoder,
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};
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proto_mac_mgmt_msg_prc_lt_ctrl_decoder = proto_register_protocol (
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"WiMax PRC-LT-CTRL Message", /* name */
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"WiMax PRC-LT-CTRL (prc)", /* short name */
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"wmx.prc" /* abbrev */
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);
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proto_register_field_array(proto_mac_mgmt_msg_prc_lt_ctrl_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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