forked from osmocom/wireshark
142 lines
4.2 KiB
C
142 lines
4.2 KiB
C
/* wimax_hack_decoder.c
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* WiMax HARQ ACK Burst decoder
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*
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* Copyright (c) 2007 by Intel Corporation.
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*
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* Author: Lu Pan <lu.pan@intel.com>
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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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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/* Include files */
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#include "config.h"
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#include <glib.h>
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#include <epan/packet.h>
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extern gint proto_wimax;
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void proto_register_wimax_hack(void);
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static gint proto_wimax_hack_decoder = -1;
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static gint ett_wimax_hack_decoder = -1;
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static const value_string vals_flags[] =
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{
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{0, "Even Half-Slot (tiles 0,2,4)"},
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{1, "Odd Half-Slot (tiles 1,3,5)"},
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{0, NULL}
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};
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static const value_string vals_values[] =
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{
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{0, "ACK"},
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{1, "NACK"},
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{0, NULL}
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};
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/* static gint hf_hack_burst = -1; */
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static gint hf_hack_num_of_hacks = -1;
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static gint hf_hack_half_slot_flag = -1;
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static gint hf_hack_subchannel = -1;
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static gint hf_hack_symboloffset = -1;
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static gint hf_hack_value = -1;
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static void dissect_wimax_hack_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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gint offset = 0;
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guint length, num_of_hacks, i;
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proto_item *hack_item = NULL;
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proto_tree *hack_tree = NULL;
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/* update the info column */
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col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "HARQ ACK Burst:");
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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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length = tvb_reported_length(tvb);
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/* display HARQ ACK Burst dissector info */
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hack_item = proto_tree_add_protocol_format(tree, proto_wimax_hack_decoder, tvb, offset, length, "HARQ ACK Burst (%u bytes)", length);
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/* add HARQ ACK Burst subtree */
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hack_tree = proto_item_add_subtree(hack_item, ett_wimax_hack_decoder);
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/* get the number of HARQ ACKs */
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num_of_hacks = tvb_get_guint8(tvb, offset);
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/* display the number of HARQ ACKs */
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proto_tree_add_item(hack_tree, hf_hack_num_of_hacks, tvb, offset++, 1, ENC_BIG_ENDIAN);
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/* display the HARQ ACKs */
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for(i = 0; i < num_of_hacks; i++)
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{
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proto_tree_add_item(hack_tree, hf_hack_subchannel, tvb, offset++, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(hack_tree, hf_hack_symboloffset, tvb, offset++, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(hack_tree, hf_hack_half_slot_flag, tvb, offset++, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(hack_tree, hf_hack_value, tvb, offset++, 1, ENC_BIG_ENDIAN);
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}
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}
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}
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/* Register Wimax HARQ ACK Protocol */
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void proto_register_wimax_hack(void)
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{
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/* HARQ ACK display */
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static hf_register_info hf[] =
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{
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#if 0
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{
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&hf_hack_burst,
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{"HARQ ACK Burst", "wmx.hack.burst", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL}
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},
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#endif
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{
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&hf_hack_num_of_hacks,
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{"Number Of HARQ ACKs/NACKs", "wmx.hack.num_of_hacks", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
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},
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{
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&hf_hack_subchannel,
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{"Physical Subchannel", "wmx.hack.subchannel", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
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},
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{
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&hf_hack_symboloffset,
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{"Symbol Offset", "wmx.hack.symbol_offset", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
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},
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{
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&hf_hack_half_slot_flag,
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{"Half-Slot Flag", "wmx.hack.half_slot_flag", FT_UINT8, BASE_DEC, VALS(vals_flags), 0x0, NULL, HFILL}
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},
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{
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&hf_hack_value,
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{"ACK Value", "wmx.hack.hack_value", FT_UINT8, BASE_DEC, VALS(vals_values), 0x0, NULL, HFILL}
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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_wimax_hack_decoder,
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};
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proto_wimax_hack_decoder = proto_wimax;
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register_dissector("wimax_hack_burst_handler", dissect_wimax_hack_decoder, -1);
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proto_register_field_array(proto_wimax_hack_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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