/* msg_aas_beam.c
* WiMax MAC Management AAS-BEAM-SELECT/REQ/RSP Messages decoders
*
* Copyright (c) 2007 by Intel Corporation.
*
* Author: Lu Pan
*
* $Id: msg_aas_beam.c 23661 2007-11-28 23:22:38Z gerald $
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#define OFDM /* disable it if not supporting OFDM */
/* Include files */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include <epan/packet.h>
#include "wimax_mac.h"
extern gint proto_mac_mgmt_msg_aas_fbck_decoder;
#define AAS_BEAM_SELECT_AAS_BEAM_INDEX_MASK 0xFC
#define AAS_BEAM_SELECT_RESERVED_MASK 0x03
#define AAS_BEAM_FEEDBACK_REQUEST_NUMBER_MASK 0xE0
#define AAS_BEAM_MEASUREMENT_REPORT_TYPE_MASK 0x18
#define AAS_BEAM_RESOLUTION_PARAMETER_MASK 0x07
#define AAS_BEAM_BEAM_BIT_MASK_MASK 0xF0
#define AAS_BEAM_RESERVED_MASK 0x0F
/* forward reference */
void proto_register_mac_mgmt_msg_aas_beam(void);
void dissect_mac_mgmt_msg_aas_beam_select_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
#ifdef OFDM
static void dissect_mac_mgmt_msg_aas_beam_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
static void dissect_mac_mgmt_msg_aas_beam_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
#endif
static gint proto_mac_mgmt_msg_aas_beam_decoder = -1;
static gint ett_mac_mgmt_msg_aas_beam_select_decoder = -1;
static gint ett_mac_mgmt_msg_aas_beam_req_decoder = -1;
static gint ett_mac_mgmt_msg_aas_beam_rsp_decoder = -1;
/* Setup protocol subtree array */
static gint *ett[] =
{
&ett_mac_mgmt_msg_aas_beam_select_decoder,
&ett_mac_mgmt_msg_aas_beam_req_decoder,
&ett_mac_mgmt_msg_aas_beam_rsp_decoder,
};
#ifdef OFDM
static const value_string vals_report_types[] =
{
{0, "BEAM_REP_IE"},
{0, NULL}
};
static const value_string vals_resolution_parameter[] =
{
{0, "report every 4th subcarrier"},
{1, "report every 8th subcarrier"},
{2, "report every 16th subcarrier"},
{3, "report every 32nd subcarrier"},
{4, "report every 64th subcarrier"},
{0, NULL}
};
#endif
/* fix fields */
static gint hf_aas_beam_message_type = -1;
static gint hf_aas_beam_unknown_type = -1;
static gint hf_aas_beam_select_index = -1;
static gint hf_aas_beam_select_reserved = -1;
#ifdef OFDM
static gint hf_aas_beam_frame_number = -1;
static gint hf_aas_beam_feedback_request_number = -1;
static gint hf_aas_beam_measurement_report_type = -1;
static gint hf_aas_beam_resolution_parameter = -1;
static gint hf_aas_beam_beam_bit_mask = -1;
static int hf_aas_beam_freq_value_re = -1;
static int hf_aas_beam_freq_value_im = -1;
static int hf_aas_beam_rssi_value = -1;
static int hf_aas_beam_cinr_value = -1;
#endif
/* AAS-BEAM display */
static hf_register_info hf_aas_beam[] =
{
{
&hf_aas_beam_message_type,
{
"MAC Management Message Type", "wmx.macmgtmsgtype.aas_beam",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_beam_select_index,
{
"AAS Beam Index", "wmx.aas_beam.aas_beam_index",
FT_UINT8, BASE_DEC, NULL, AAS_BEAM_SELECT_AAS_BEAM_INDEX_MASK, "", HFILL
}
},
{
&hf_aas_beam_beam_bit_mask,
{
"Beam Bit Mask", "wmx.aas_beam.beam_bit_mask",
FT_UINT8, BASE_HEX, NULL, AAS_BEAM_BEAM_BIT_MASK_MASK, "", HFILL
}
},
#ifdef OFDM
{
&hf_aas_beam_cinr_value,
{
"CINR Mean Value", "wmx.aas_beam.cinr_mean_value",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_beam_feedback_request_number,
{
"Feedback Request Number", "wmx.aas_beam.feedback_request_number",
FT_UINT8, BASE_DEC, NULL, AAS_BEAM_FEEDBACK_REQUEST_NUMBER_MASK, "", HFILL
}
},
{
&hf_aas_beam_frame_number,
{
"Frame Number", "wmx.aas_beam.frame_number",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_beam_freq_value_im,
{
"Frequency Value (imaginary part)", "wmx.aas_beam.freq_value_im",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_beam_freq_value_re,
{
"Frequency Value (real part)", "wmx.aas_beam.freq_value_re",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_beam_measurement_report_type,
{
"Measurement Report Type", "wmx.aas_beam.measurement_report_type",
FT_UINT8, BASE_DEC, VALS(vals_report_types), AAS_BEAM_MEASUREMENT_REPORT_TYPE_MASK, "", HFILL
}
},
{
&hf_aas_beam_select_reserved,
{
"Reserved", "wmx.aas_beam.reserved",
FT_UINT8, BASE_HEX, NULL, AAS_BEAM_SELECT_RESERVED_MASK, "", HFILL
}
},
{
&hf_aas_beam_resolution_parameter,
{
"Resolution Parameter", "wmx.aas_beam.resolution_parameter",
FT_UINT8, BASE_DEC, VALS(vals_resolution_parameter), AAS_BEAM_RESOLUTION_PARAMETER_MASK, "", HFILL
}
},
{
&hf_aas_beam_rssi_value,
{
"RSSI Mean Value", "wmx.aas_beam.rssi_mean_value",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
#endif
{
&hf_aas_beam_unknown_type,
{
"Unknown TLV type", "wmx.aas_beam.unknown_type",
FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL
}
}
};
/* Register Wimax Mac Payload Protocol and Dissector */
void proto_register_mac_mgmt_msg_aas_beam(void)
{
if (proto_mac_mgmt_msg_aas_beam_decoder == -1)
{
proto_mac_mgmt_msg_aas_beam_decoder = proto_mac_mgmt_msg_aas_fbck_decoder;
proto_register_field_array(proto_mac_mgmt_msg_aas_beam_decoder, hf_aas_beam, array_length(hf_aas_beam));
proto_register_subtree_array(ett, array_length(ett));
}
register_dissector("mac_mgmt_msg_aas_beam_select_handler", dissect_mac_mgmt_msg_aas_beam_select_decoder, -1);
#ifdef OFDM
register_dissector("mac_mgmt_msg_aas_beam_req_handler", dissect_mac_mgmt_msg_aas_beam_req_decoder, -1);
register_dissector("mac_mgmt_msg_aas_beam_rsp_handler", dissect_mac_mgmt_msg_aas_beam_rsp_decoder, -1);
#endif
}
void dissect_mac_mgmt_msg_aas_beam_select_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
{
guint offset = 0;
guint tvb_len, payload_type;
proto_item *aas_beam_item = NULL;
proto_tree *aas_beam_tree = NULL;
if(tree)
{ /* we are being asked for details */
/* get the message type */
payload_type = tvb_get_guint8(tvb, offset);
/* ensure the message type is AAS-BEAM-SELECT */
if(payload_type != MAC_MGMT_MSG_AAS_BEAM_SELECT)
return;
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC message type */
aas_beam_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_aas_beam_decoder, tvb, offset, tvb_len, "AAS Beam Select (AAS-BEAM-SELECT) (%u bytes)", tvb_len);
/* add subtree */
aas_beam_tree = proto_item_add_subtree(aas_beam_item, ett_mac_mgmt_msg_aas_beam_select_decoder);
/* Display the AAS-BEAM-SELECT message type */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_message_type, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* Decode and display the AAS-BEAM-SELECT message body */
/* display the AAS Beam Index */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_select_index, tvb, offset, 1, FALSE);
/* display the reserved fields */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_select_reserved, tvb, offset, 1, FALSE);
}
}
#ifdef OFDM
static void dissect_mac_mgmt_msg_aas_beam_req_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
{
guint offset = 0;
guint tvb_len, payload_type;
proto_item *aas_beam_item = NULL;
proto_tree *aas_beam_tree = NULL;
if(tree)
{ /* we are being asked for details */
/* get the message type */
payload_type = tvb_get_guint8(tvb, offset);
/* ensure the message type is AAS-BEAM-REQ */
if(payload_type != MAC_MGMT_MSG_AAS_BEAM_REQ)
return;
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC message type */
aas_beam_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_aas_beam_decoder, tvb, offset, tvb_len, "AAS Beam Request (AAS-BEAM-REQ) (%u bytes)", tvb_len);
/* add subtree */
aas_beam_tree = proto_item_add_subtree(aas_beam_item, ett_mac_mgmt_msg_aas_beam_req_decoder);
/* Display the AAS-BEAM-REQ message type */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_message_type, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* Decode and display the AAS-BEAM-REQ message body */
/* display the Frame Number */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_frame_number, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* display the Feedback Request Number */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_feedback_request_number, tvb, offset, 1, FALSE);
/* display the Measurement Report Type */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_measurement_report_type, tvb, offset, 1, FALSE);
/* display the Resolution Parameter */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_resolution_parameter, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* display the Beam Bit mask */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_beam_bit_mask, tvb, offset, 1, FALSE);
/* display the reserved fields */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_select_reserved, tvb, offset, 1, FALSE);
}
}
static void dissect_mac_mgmt_msg_aas_beam_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
{
guint offset = 0;
guint tvb_len, payload_type, report_type;
guint number_of_frequencies, index;
proto_item *aas_beam_item = NULL;
proto_tree *aas_beam_tree = NULL;
if(tree)
{ /* we are being asked for details */
/* get the message type */
payload_type = tvb_get_guint8(tvb, offset);
/* ensure the message type is AAS-BEAM-RSP */
if(payload_type != MAC_MGMT_MSG_AAS_BEAM_RSP)
return;
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC message type */
aas_beam_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_aas_beam_decoder, tvb, offset, tvb_len, "AAS Beam Response (AAS-BEAM-RSP) (%u bytes)", tvb_len);
/* add subtree */
aas_beam_tree = proto_item_add_subtree(aas_beam_item, ett_mac_mgmt_msg_aas_beam_req_decoder);
/* Display the AAS-BEAM-RSP message type */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_message_type, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* Decode and display the AAS-BEAM-RSP message body */
/* display the Frame Number */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_frame_number, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* get the Measurement Report Type */
report_type = tvb_get_guint8(tvb, offset);
/* display the Feedback Request Number */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_feedback_request_number, tvb, offset, 1, FALSE);
/* display the Measurement Report Type */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_measurement_report_type, tvb, offset, 1, FALSE);
/* display the Resolution Parameter */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_resolution_parameter, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* display the Beam Bit mask */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_beam_bit_mask, tvb, offset, 1, FALSE);
/* display the reserved fields */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_select_reserved, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* check the Measurement Report Type */
if((report_type & AAS_BEAM_MEASUREMENT_REPORT_TYPE_MASK) == 0)
{
/* calculate the total number of frequencies */
number_of_frequencies = (tvb_len - offset) / 2 - 1;
/* display the frequency */
for(index = 0; index < number_of_frequencies; index++)
{ /* display the Frequency Value (real part) */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_freq_value_re, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* display the Frequency Value (imaginary part) */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_freq_value_im, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
}
}
/* display the RSSI Mean Value */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_rssi_value, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* display the CINR Mean Value */
proto_tree_add_item(aas_beam_tree, hf_aas_beam_cinr_value, tvb, offset, 1, FALSE);
}
}
#endif
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