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/* wimax_hack_decoder.c
* WiMax HARQ ACK Burst decoder
*
* Copyright (c) 2007 by Intel Corporation.
*
* Author: Lu Pan <lu.pan@intel.com>
*
* 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 */
#include "config.h"
#include <epan/packet.h>
#include "wimax-int.h"
extern gint proto_wimax;
static gint proto_wimax_hack_decoder = -1;
static gint ett_wimax_hack_decoder = -1;
static const value_string vals_flags[] =
{
{0, "Even Half-Slot (tiles 0,2,4)"},
{1, "Odd Half-Slot (tiles 1,3,5)"},
{0, NULL}
};
static const value_string vals_values[] =
{
{0, "ACK"},
{1, "NACK"},
{0, NULL}
};
/* static gint hf_hack_burst = -1; */
static gint hf_hack_num_of_hacks = -1;
static gint hf_hack_half_slot_flag = -1;
static gint hf_hack_subchannel = -1;
static gint hf_hack_symboloffset = -1;
static gint hf_hack_value = -1;
static int dissect_wimax_hack_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
gint offset = 0;
guint length, num_of_hacks, i;
proto_item *hack_item = NULL;
proto_tree *hack_tree = NULL;
/* update the info column */
col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "HARQ ACK Burst:");
if (tree)
{ /* we are being asked for details */
/* get the tvb reported length */
length = tvb_reported_length(tvb);
/* display HARQ ACK Burst dissector info */
hack_item = proto_tree_add_protocol_format(tree, proto_wimax_hack_decoder, tvb, offset, length, "HARQ ACK Burst (%u bytes)", length);
/* add HARQ ACK Burst subtree */
hack_tree = proto_item_add_subtree(hack_item, ett_wimax_hack_decoder);
/* get the number of HARQ ACKs */
num_of_hacks = tvb_get_guint8(tvb, offset);
/* display the number of HARQ ACKs */
proto_tree_add_item(hack_tree, hf_hack_num_of_hacks, tvb, offset++, 1, ENC_BIG_ENDIAN);
/* display the HARQ ACKs */
for(i = 0; i < num_of_hacks; i++)
{
proto_tree_add_item(hack_tree, hf_hack_subchannel, tvb, offset++, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(hack_tree, hf_hack_symboloffset, tvb, offset++, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(hack_tree, hf_hack_half_slot_flag, tvb, offset++, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(hack_tree, hf_hack_value, tvb, offset++, 1, ENC_BIG_ENDIAN);
}
}
return tvb_captured_length(tvb);
}
/* Register Wimax HARQ ACK Protocol */
void wimax_proto_register_wimax_hack(void)
{
/* HARQ ACK display */
static hf_register_info hf[] =
{
#if 0
{
&hf_hack_burst,
{"HARQ ACK Burst", "wmx.hack.burst", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL}
},
#endif
{
&hf_hack_num_of_hacks,
{"Number Of HARQ ACKs/NACKs", "wmx.hack.num_of_hacks", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
},
{
&hf_hack_subchannel,
{"Physical Subchannel", "wmx.hack.subchannel", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
},
{
&hf_hack_symboloffset,
{"Symbol Offset", "wmx.hack.symbol_offset", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
},
{
&hf_hack_half_slot_flag,
{"Half-Slot Flag", "wmx.hack.half_slot_flag", FT_UINT8, BASE_DEC, VALS(vals_flags), 0x0, NULL, HFILL}
},
{
&hf_hack_value,
{"ACK Value", "wmx.hack.hack_value", FT_UINT8, BASE_DEC, VALS(vals_values), 0x0, NULL, HFILL}
}
};
/* Setup protocol subtree array */
static gint *ett[] =
{
&ett_wimax_hack_decoder,
};
proto_wimax_hack_decoder = proto_wimax;
register_dissector("wimax_hack_burst_handler", dissect_wimax_hack_decoder, -1);
proto_register_field_array(proto_wimax_hack_decoder, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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