forked from osmocom/wireshark
130 lines
4.0 KiB
C
130 lines
4.0 KiB
C
/* wimax_ffb_decoder.c
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* WiMax Fast Feedback packet 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_ffb(void);
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static gint proto_wimax_ffb_decoder = -1;
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static gint ett_wimax_ffb_decoder = -1;
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/* static gint hf_ffb_burst = -1; */
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static gint hf_ffb_num_of_ffbs = -1;
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static gint hf_ffb_type = -1;
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static gint hf_ffb_subchannel = -1;
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static gint hf_ffb_symboloffset = -1;
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static gint hf_ffb_value = -1;
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static void dissect_wimax_ffb_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_ffbs, i;
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proto_item *ffb_item = NULL;
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proto_tree *ffb_tree = NULL;
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/* update the info column */
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col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "Fast Feedback 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 Fast Feedback Burst dissector info */
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ffb_item = proto_tree_add_protocol_format(tree, proto_wimax_ffb_decoder, tvb, offset, length, "Fast Feedback Burst (%u bytes)", length);
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/* add Fast Feedback Burst subtree */
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ffb_tree = proto_item_add_subtree(ffb_item, ett_wimax_ffb_decoder);
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/* get the number of FFBs */
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num_of_ffbs = tvb_get_guint8(tvb, offset);
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/* display the number of FFBs */
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proto_tree_add_item(ffb_tree, hf_ffb_num_of_ffbs, tvb, offset++, 1, ENC_BIG_ENDIAN);
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/* display the FFB type */
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proto_tree_add_item(ffb_tree, hf_ffb_type, tvb, offset++, 1, ENC_BIG_ENDIAN);
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/* display the FFBs */
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for(i = 0; i < num_of_ffbs; i++)
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{
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proto_tree_add_item(ffb_tree, hf_ffb_subchannel, tvb, offset++, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(ffb_tree, hf_ffb_symboloffset, tvb, offset++, 1, ENC_BIG_ENDIAN);
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proto_tree_add_item(ffb_tree, hf_ffb_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 FFB Protocol */
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void proto_register_wimax_ffb(void)
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{
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/* FFB 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_ffb_burst,
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{"Fast Feedback Burst", "wmx.ffb.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_ffb_num_of_ffbs,
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{"Number Of Fast Feedback", "wmx.ffb.num_of_ffbs", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
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},
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{
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&hf_ffb_type,
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{"Fast Feedback Type", "wmx.ffb.ffb_type", FT_UINT8, BASE_HEX, NULL, 0x0, NULL, HFILL}
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},
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{
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&hf_ffb_subchannel,
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{"Physical Subchannel", "wmx.ffb.subchannel", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
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},
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{
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&hf_ffb_symboloffset,
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{"Symbol Offset", "wmx.ffb.symbol_offset", FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL}
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},
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{
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&hf_ffb_value,
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{"Fast Feedback Value", "wmx.ffb.ffb_value", FT_UINT8, BASE_HEX, NULL, 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_ffb_decoder,
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};
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proto_wimax_ffb_decoder = proto_wimax;
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/* register the field display messages */
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proto_register_field_array(proto_wimax_ffb_decoder, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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register_dissector("wimax_ffb_burst_handler", dissect_wimax_ffb_decoder, -1);
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}
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