/* msg_aas_beam.c
* WiMax MAC Management AAS-BEAM-SELECT/REQ/RSP Messages decoders
*
* Copyright (c) 2007 by Intel Corporation.
*
* Author: Lu Pan <lu.pan@intel.com>
*
* $Id: msg_aas_fbck.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.
*/
/* Include files */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <glib.h>
#include <epan/packet.h>
#include "wimax_mac.h"
#define OFDMA_AAS_FBCK_REQ_NUMBER_OF_FRAME_MASK 0xFE
#define OFDMA_AAS_FBCK_REQ_DATA_TYPE_MASK 0x01
#define OFDMA_AAS_FBCK_REQ_FB_REQ_COUNTER_MASK 0xE0
#define OFDMA_AAS_FBCK_REQ_FB_REQ_RESOLUTION_MASK 0x18
#define OFDMA_AAS_FBCK_REQ_FB_REQ_RESERVED_MASK 0x07
#define OFDMA_AAS_FBCK_REQ_FB_RSP_RESERVED_MASK 0xC0
#define OFDMA_AAS_FBCK_RSP_DATA_TYPE_MASK 0x20
#define OFDMA_AAS_FBCK_REQ_FB_RSP_COUNTER_MASK 0x1C
#define OFDMA_AAS_FBCK_REQ_FB_RSP_RESOLUTION_MASK 0x03
/* forward reference */
void proto_register_mac_mgmt_msg_aas_fbck(void);
void dissect_mac_mgmt_msg_aas_fbck_req_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
void dissect_mac_mgmt_msg_aas_fbck_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
gint proto_mac_mgmt_msg_aas_fbck_decoder = -1;
static gint ett_mac_mgmt_msg_aas_fbck_req_decoder = -1;
static gint ett_mac_mgmt_msg_aas_fbck_rsp_decoder = -1;
/* Setup protocol subtree array */
static gint *ett[] =
{
&ett_mac_mgmt_msg_aas_fbck_req_decoder,
&ett_mac_mgmt_msg_aas_fbck_rsp_decoder,
};
static const value_string vals_data_types[] =
{
{0, "measure on downlink preamble only"},
{1, "measure on downlink data (for this SS) only"},
{0, NULL}
};
static const value_string vals_resolutions_0[] =
{
{0, "32 subcarriers"},
{1, "64 subcarriers"},
{2, "128 subcarriers"},
{3, "256 subcarriers"},
{0, NULL}
};
static const value_string vals_resolutions_1[] =
{
{0, "1 subcarrier"},
{1, "4 subcarriers"},
{2, "8 subcarriers"},
{3, "16 subcarriers"},
{0, NULL}
};
/* fix fields */
static int hf_aas_fbck_message_type = -1;
static int hf_aas_fbck_unknown_type = -1;
static int hf_aas_fbck_frame_number = -1;
static int hf_aas_fbck_number_of_frames = -1;
static int hf_aas_fbck_req_data_type = -1;
static int hf_aas_fbck_rsp_data_type = -1;
static int hf_aas_fbck_req_counter = -1;
static int hf_aas_fbck_rsp_counter = -1;
static int hf_aas_fbck_req_resolution_0 = -1;
static int hf_aas_fbck_rsp_resolution_0 = -1;
static int hf_aas_fbck_req_resolution_1 = -1;
static int hf_aas_fbck_rsp_resolution_1 = -1;
static int hf_aas_fbck_req_reserved = -1;
static int hf_aas_fbck_rsp_reserved = -1;
static int hf_aas_fbck_freq_value_re = -1;
static int hf_aas_fbck_freq_value_im = -1;
static int hf_aas_fbck_rssi_value = -1;
static int hf_aas_fbck_cinr_value = -1;
/* AAS-FBCK display */
static hf_register_info hf_aas_fbck[] =
{
{
&hf_aas_fbck_message_type,
{
"MAC Management Message Type", "wmx.macmgtmsgtype.aas_fbck",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_fbck_cinr_value,
{
"CINR Mean Value", "wmx.aas_fbck.cinr_mean_value",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_fbck_req_counter,
{
"Feedback Request Counter", "wmx.aas_fbck.counter",
FT_UINT8, BASE_DEC, NULL, OFDMA_AAS_FBCK_REQ_FB_REQ_COUNTER_MASK, "", HFILL
}
},
{
&hf_aas_fbck_frame_number,
{
"Frame Number", "wmx.aas_fbck.frame_number",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_fbck_freq_value_re,
{
"Frequency Value (real part)", "wmx.aas_fbck.freq_value_re",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_fbck_freq_value_im,
{
"Frequency Value (imaginary part)", "wmx.aas_fbck.freq_value_im",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_fbck_number_of_frames,
{
"Number Of Frames", "wmx.aas_fbck.number_of_frames",
FT_UINT8, BASE_DEC, NULL, OFDMA_AAS_FBCK_REQ_NUMBER_OF_FRAME_MASK, "", HFILL
}
},
{
&hf_aas_fbck_req_resolution_0,
{
"Frequency Measurement Resolution", "wmx.aas_fbck.resolution",
FT_UINT8, BASE_DEC, VALS(vals_resolutions_0), OFDMA_AAS_FBCK_REQ_FB_REQ_RESOLUTION_MASK, "", HFILL
}
},
{
&hf_aas_fbck_req_resolution_1,
{
"Frequency Measurement Resolution", "wmx.aas_fbck.resolution",
FT_UINT8, BASE_DEC, VALS(vals_resolutions_1), OFDMA_AAS_FBCK_REQ_FB_REQ_RESOLUTION_MASK, "", HFILL
}
},
{
&hf_aas_fbck_rssi_value,
{
"RSSI Mean Value", "wmx.aas_fbck.rssi_mean_value",
FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_fbck_unknown_type,
{
"Unknown TLV type", "wmx.aas_fbck.unknown_type",
FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL
}
},
{
&hf_aas_fbck_req_data_type,
{
"Measurement Data Type", "wmx.aas_fbck_req.data_type",
FT_UINT8, BASE_DEC, VALS(vals_data_types), OFDMA_AAS_FBCK_REQ_DATA_TYPE_MASK, "", HFILL
}
},
{
&hf_aas_fbck_req_reserved,
{
"Reserved", "wmx.aas_fbck_req.reserved",
FT_UINT8, BASE_HEX, NULL, OFDMA_AAS_FBCK_REQ_FB_REQ_RESERVED_MASK, "", HFILL
}
},
{
&hf_aas_fbck_rsp_counter,
{
"Feedback Request Counter", "wmx.aas_fbck_rsp.counter",
FT_UINT8, BASE_DEC, NULL, OFDMA_AAS_FBCK_REQ_FB_RSP_COUNTER_MASK, "", HFILL
}
},
{
&hf_aas_fbck_rsp_data_type,
{
"Measurement Data Type", "wmx.aas_fbck_rsp.data_type",
FT_UINT8, BASE_DEC, VALS(vals_data_types), OFDMA_AAS_FBCK_RSP_DATA_TYPE_MASK, "", HFILL
}
},
{
&hf_aas_fbck_rsp_reserved,
{
"Reserved", "wmx.aas_fbck_rsp.reserved",
FT_UINT8, BASE_HEX, NULL, OFDMA_AAS_FBCK_REQ_FB_RSP_RESERVED_MASK, "", HFILL
}
},
{
&hf_aas_fbck_rsp_resolution_0,
{
"Frequency Measurement Resolution", "wmx.aas_fbck_rsp.resolution",
FT_UINT8, BASE_DEC, VALS(vals_resolutions_0), OFDMA_AAS_FBCK_REQ_FB_RSP_RESOLUTION_MASK, "", HFILL
}
},
{
&hf_aas_fbck_rsp_resolution_1,
{
"Frequency Measurement Resolution", "wmx.aas_fbck_rsp.resolution",
FT_UINT8, BASE_DEC, VALS(vals_resolutions_1), OFDMA_AAS_FBCK_REQ_FB_RSP_RESOLUTION_MASK, "", HFILL
}
}
};
/* Register Wimax Mac Payload Protocol and Dissector */
void proto_register_mac_mgmt_msg_aas_fbck(void)
{
if (proto_mac_mgmt_msg_aas_fbck_decoder == -1)
{
proto_mac_mgmt_msg_aas_fbck_decoder = proto_register_protocol (
"WiMax AAS-FEEDBACK/BEAM Messages", /* name */
"WiMax AAS-FEEDBACK/BEAM (aas)", /* short name */
"wmx.aas" /* abbrev */
);
proto_register_field_array(proto_mac_mgmt_msg_aas_fbck_decoder, hf_aas_fbck, array_length(hf_aas_fbck));
proto_register_subtree_array(ett, array_length(ett));
}
}
void dissect_mac_mgmt_msg_aas_fbck_req_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
{
guint offset = 0;
guint tvb_len, payload_type, data_type;
proto_item *aas_fbck_item = NULL;
proto_tree *aas_fbck_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-FBCK-REQ */
if(payload_type != MAC_MGMT_MSG_AAS_FBCK_REQ)
return;
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC message type */
aas_fbck_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_aas_fbck_decoder, tvb, offset, tvb_len, "AAS Channel Feedback Request (AAS-FBCK-REQ) (%u bytes)", tvb_len);
/* add subtree */
aas_fbck_tree = proto_item_add_subtree(aas_fbck_item, ett_mac_mgmt_msg_aas_fbck_req_decoder);
/* Display the AAS-FBCK-REQ message type */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_message_type, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* Decode and display the AAS-FBCK-REQ message body */
/* display the Frame Number */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_frame_number, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* get the data type */
data_type = tvb_get_guint8(tvb, offset);
/* display the number of Frames */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_number_of_frames, tvb, offset, 1, FALSE);
/* display the Data Type */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_req_data_type, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* display the Feedback Request Counter */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_req_counter, tvb, offset, 1, FALSE);
/* display the Frequency Measurement Resolution */
if(data_type & OFDMA_AAS_FBCK_REQ_DATA_TYPE_MASK)
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_req_resolution_1, tvb, offset, 1, FALSE);
else
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_req_resolution_0, tvb, offset, 1, FALSE);
/* display the reserved fields */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_req_reserved, tvb, offset, 1, FALSE);
}
}
void dissect_mac_mgmt_msg_aas_fbck_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree)
{
guint offset = 0;
guint tvb_len, payload_type, data_type;
proto_item *aas_fbck_item = NULL;
proto_tree *aas_fbck_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-FBCK-RSP */
if(payload_type != MAC_MGMT_MSG_AAS_FBCK_RSP)
return;
/* Get the tvb reported length */
tvb_len = tvb_reported_length(tvb);
/* display MAC message type */
aas_fbck_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_aas_fbck_decoder, tvb, offset, tvb_len, "AAS Channel Feedback Response (AAS-FBCK-RSP) (%u bytes)", tvb_len);
/* add subtree */
aas_fbck_tree = proto_item_add_subtree(aas_fbck_item, ett_mac_mgmt_msg_aas_fbck_req_decoder);
/* Display the AAS-FBCK-RSP message type */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_message_type, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* get the data type */
data_type = tvb_get_guint8(tvb, offset);
/* Decode and display the AAS-FBCK-RSP message body */
/* display the reserved fields */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_rsp_reserved, tvb, offset, 1, FALSE);
/* display the Data Type */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_rsp_data_type, tvb, offset, 1, FALSE);
/* display the Feedback Request Counter */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_rsp_counter, tvb, offset, 1, FALSE);
/* display the Frequency Measurement Resolution */
if(data_type & OFDMA_AAS_FBCK_RSP_DATA_TYPE_MASK)
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_rsp_resolution_1, tvb, offset, 1, FALSE);
else
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_rsp_resolution_0, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
for(; offset < (tvb_len - 2); )
{
/* display the Frequency Value (real part) */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_freq_value_re, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* display the Frequency Value (imaginary part) */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_freq_value_im, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
}
/* display the RSSI Mean Value */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_rssi_value, tvb, offset, 1, FALSE);
/* move to next field */
offset++;
/* display the CINR Mean Value */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_cinr_value, tvb, offset, 1, FALSE);
}
}
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