diff options
Diffstat (limited to 'plugins/wimax/wimax_hack_decoder.c')
| -rw-r--r-- | plugins/wimax/wimax_hack_decoder.c | 148 |
1 files changed, 148 insertions, 0 deletions
diff --git a/plugins/wimax/wimax_hack_decoder.c b/plugins/wimax/wimax_hack_decoder.c new file mode 100644 index 0000000000..66b819e8a9 --- /dev/null +++ b/plugins/wimax/wimax_hack_decoder.c @@ -0,0 +1,148 @@ +/* wimax_hack_decoder.c + * WiMax HARQ ACK Burst decoder + * + * Copyright (c) 2007 by Intel Corporation. + * + * Author: Lu Pan <lu.pan@intel.com> + * + * $Id$ + * + * 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 <gmodule.h> +#include <epan/packet.h> +#include <epan/prefs.h> + +extern gint proto_wimax; + +/* forward reference */ +static void dissect_wimax_hack_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); + +static gint proto_wimax_hack_decoder = -1; +static gint ett_wimax_hack_decoder = -1; + +/* Setup protocol subtree array */ +static gint *ett[] = +{ + &ett_wimax_hack_decoder, +}; + +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"} +}; + +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; + +/* HARQ ACK display */ +static hf_register_info hf[] = +{ + { + &hf_hack_burst, + {"HARQ ACK Burst", "wimax.hack.burst", FT_BYTES, BASE_HEX, NULL, 0x0, "", HFILL} + }, + { + &hf_hack_num_of_hacks, + {"Number Of HARQ ACKs/NACKs", "wimax.hack.num_of_hacks", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL} + }, + { + &hf_hack_subchannel, + {"Physical Subchannel", "wimax.hack.subchannel", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL} + }, + { + &hf_hack_symboloffset, + {"Symbol Offset", "wimax.hack.symbol_offset", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL} + }, + { + &hf_hack_half_slot_flag, + {"Half-Slot Flag", "wimax.hack.half_slot_flag", FT_UINT8, BASE_DEC, VALS(vals_flags), 0x0, "", HFILL} + }, + { + &hf_hack_value, + {"ACK Value", "wimax.hack.hack_value", FT_UINT8, BASE_DEC, VALS(vals_values), 0x0, "", HFILL} + } +}; + +/* Register Wimax HARQ ACK Protocol */ +void proto_register_wimax_hack(void) +{ + if (proto_wimax_hack_decoder == -1) + { + 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)); + } +} + +static void dissect_wimax_hack_decoder(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + gint offset = 0; + guint length, num_of_hacks, i; + proto_item *hack_item = NULL; + proto_tree *hack_tree = NULL; + + /* update the info column */ + if (check_col(pinfo->cinfo, COL_INFO)) + { + col_append_sep_str(pinfo->cinfo, COL_INFO, NULL, "HARQ ACK Burst:"); + } + if (tree) + { /* we are being asked for details */ + /* get the tvb length */ + length = tvb_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, FALSE); + /* display the HARQ ACKs */ + for(i = 0; i < num_of_hacks; i++) + { + proto_tree_add_item(hack_tree, hf_hack_subchannel, tvb, offset++, 1, FALSE); + proto_tree_add_item(hack_tree, hf_hack_symboloffset, tvb, offset++, 1, FALSE); + proto_tree_add_item(hack_tree, hf_hack_half_slot_flag, tvb, offset++, 1, FALSE); + proto_tree_add_item(hack_tree, hf_hack_value, tvb, offset++, 1, FALSE); + } + } +} |