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/* msg_prc_lt_ctrl.c
* WiMax MAC Management PRC-LT-CTRL Message decoders
*
* Copyright (c) 2007 by Intel Corporation.
*
* Author: John R. Underwood <junderx@yahoo.com>
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1999 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/* Include files */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include <epan/packet.h>
#include "crc.h"
#include "wimax_tlv.h"
#include "wimax_mac.h"
extern gint man_ofdma;
static gint proto_mac_mgmt_msg_prc_lt_ctrl_decoder = -1;
static gint ett_mac_mgmt_msg_prc_lt_ctrl_decoder = -1;
/* PRC-LT-CTRL fields */
static gint hf_prc_lt_ctrl_message_type = -1;
static gint hf_prc_lt_ctrl_precoding = -1;
static gint hf_prc_lt_ctrl_precoding_delay = -1;
static gint hf_prc_lt_ctrl_invalid_tlv = -1;
static const value_string vals_turn_on[] = {
{0, "Turn off"},
{1, "Turn on"},
{0, NULL}
};
/* Decode PRC-LT-CTRL messages. */
void dissect_mac_mgmt_msg_prc_lt_ctrl_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
{
guint offset = 0;
guint tvb_len, payload_type;
proto_item *prc_lt_ctrl_item = NULL;
proto_tree *prc_lt_ctrl_tree = NULL;
/* Ensure the right payload type */
payload_type = tvb_get_guint8(tvb, 0);
if(payload_type != MAC_MGMT_MSG_PRC_LT_CTRL)
{
return;
}
if (tree)
{ /* we are being asked for details */
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC payload type PRC-LT-CTRL */
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)");
/* add MAC PRC-LT-CTRL subtree */
prc_lt_ctrl_tree = proto_item_add_subtree(prc_lt_ctrl_item, ett_mac_mgmt_msg_prc_lt_ctrl_decoder);
/* display the Message Type */
proto_tree_add_item(prc_lt_ctrl_tree, hf_prc_lt_ctrl_message_type, tvb, offset, 1, ENC_BIG_ENDIAN);
offset ++;
/* display whether to Setup or Tear-down the
* long-term MIMO precoding delay */
proto_tree_add_item(prc_lt_ctrl_tree, hf_prc_lt_ctrl_precoding, tvb, offset, 1, ENC_BIG_ENDIAN);
/* display the Precoding Delay */
proto_tree_add_item(prc_lt_ctrl_tree, hf_prc_lt_ctrl_precoding_delay, tvb, offset, 1, ENC_BIG_ENDIAN);
}
}
/* Register Wimax Mac Payload Protocol and Dissector */
void proto_register_mac_mgmt_msg_prc_lt_ctrl(void)
{
/* PRC-LT-CTRL fields display */
static hf_register_info hf[] =
{
{
&hf_prc_lt_ctrl_message_type,
{
"MAC Management Message Type", "wmx.macmgtmsgtype.prc_lt_ctrl",
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL
}
},
{
&hf_prc_lt_ctrl_invalid_tlv,
{
"Invalid TLV", "wmx.prc_lt_ctrl.invalid_tlv",
FT_BYTES, BASE_NONE, NULL, 0, NULL, HFILL
}
},
{
&hf_prc_lt_ctrl_precoding,
{
"Setup/Tear-down long-term precoding with feedback",
"wimax.prc_lt_ctrl.precoding",
FT_UINT8, BASE_DEC, VALS(vals_turn_on), 0x80, NULL, HFILL
}
},
{
&hf_prc_lt_ctrl_precoding_delay,
{
"BS precoding application delay",
"wimax.prc_lt_ctrl.precoding_delay",
FT_UINT8, BASE_DEC, NULL, 0x60, NULL, HFILL
}
}
};
/* Setup protocol subtree array */
static gint *ett[] =
{
&ett_mac_mgmt_msg_prc_lt_ctrl_decoder,
};
proto_mac_mgmt_msg_prc_lt_ctrl_decoder = proto_register_protocol (
"WiMax PRC-LT-CTRL Message", /* name */
"WiMax PRC-LT-CTRL (prc)", /* short name */
"wmx.prc" /* abbrev */
);
proto_register_field_array(proto_mac_mgmt_msg_prc_lt_ctrl_decoder, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
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