1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
|
/* 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>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1999 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
/* Include files */
#include "config.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
void proto_register_mac_mgmt_msg_aas_fbck(void);
void proto_reg_handoff_mac_mgmt_msg_aas(void);
static dissector_handle_t aas_req_handle;
static dissector_handle_t aas_rsp_handle;
static 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;
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_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;
static int dissect_mac_mgmt_msg_aas_fbck_req_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
{
guint offset = 0;
guint data_type;
proto_item *aas_fbck_item;
proto_tree *aas_fbck_tree;
{ /* we are being asked for details */
/* display MAC message type */
aas_fbck_item = proto_tree_add_protocol_format(tree, proto_mac_mgmt_msg_aas_fbck_decoder, tvb, offset, -1, "AAS Channel Feedback Request (AAS-FBCK-REQ)");
/* 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 */
/* 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, ENC_BIG_ENDIAN);
/* 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, ENC_BIG_ENDIAN);
/* display the Data Type */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_req_data_type, tvb, offset, 1, ENC_BIG_ENDIAN);
/* 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, ENC_BIG_ENDIAN);
/* 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, ENC_BIG_ENDIAN);
else
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_req_resolution_0, tvb, offset, 1, ENC_BIG_ENDIAN);
/* display the reserved fields */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_req_reserved, tvb, offset, 1, ENC_BIG_ENDIAN);
}
return tvb_captured_length(tvb);
}
static int dissect_mac_mgmt_msg_aas_fbck_rsp_decoder(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, void* data _U_)
{
guint offset = 0;
guint tvb_len, data_type;
proto_item *aas_fbck_item;
proto_tree *aas_fbck_tree;
{ /* we are being asked for details */
/* 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, -1, "AAS Channel Feedback Response (AAS-FBCK-RSP)");
/* add subtree */
aas_fbck_tree = proto_item_add_subtree(aas_fbck_item, ett_mac_mgmt_msg_aas_fbck_rsp_decoder);
/* Display the AAS-FBCK-RSP message type */
/* 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, ENC_BIG_ENDIAN);
/* display the Data Type */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_rsp_data_type, tvb, offset, 1, ENC_BIG_ENDIAN);
/* display the Feedback Request Counter */
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_rsp_counter, tvb, offset, 1, ENC_BIG_ENDIAN);
/* 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, ENC_BIG_ENDIAN);
else
proto_tree_add_item(aas_fbck_tree, hf_aas_fbck_rsp_resolution_0, tvb, offset, 1, ENC_BIG_ENDIAN);
/* 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, ENC_BIG_ENDIAN);
/* 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, ENC_BIG_ENDIAN);
/* 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, ENC_BIG_ENDIAN);
/* 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, ENC_BIG_ENDIAN);
}
return tvb_captured_length(tvb);
}
/* Register Wimax Mac Payload Protocol and Dissector */
void proto_register_mac_mgmt_msg_aas_fbck(void)
{
/* AAS-FBCK display */
static hf_register_info hf_aas_fbck[] =
{
{
&hf_aas_fbck_cinr_value,
{
"CINR Mean Value", "wmx.aas_fbck.cinr_mean_value",
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, 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, NULL, HFILL
}
},
{
&hf_aas_fbck_frame_number,
{
"Frame Number", "wmx.aas_fbck.frame_number",
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL
}
},
{
&hf_aas_fbck_freq_value_re,
{
"Frequency Value (real part)", "wmx.aas_fbck.freq_value_re",
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL
}
},
{
&hf_aas_fbck_freq_value_im,
{
"Frequency Value (imaginary part)", "wmx.aas_fbck.freq_value_im",
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, 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, NULL, 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, NULL, 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, NULL, HFILL
}
},
{
&hf_aas_fbck_rssi_value,
{
"RSSI Mean Value", "wmx.aas_fbck.rssi_mean_value",
FT_UINT8, BASE_DEC, NULL, 0x0, NULL, HFILL
}
},
#if 0
{
&hf_aas_fbck_unknown_type,
{
"Unknown TLV type", "wmx.aas_fbck.unknown_type",
FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL
}
},
#endif
{
&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, NULL, 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, NULL, 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, NULL, 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, NULL, 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, NULL, 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, NULL, 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, NULL, HFILL
}
}
};
/* Setup protocol subtree array */
static gint *ett[] =
{
&ett_mac_mgmt_msg_aas_fbck_req_decoder,
&ett_mac_mgmt_msg_aas_fbck_rsp_decoder,
};
proto_mac_mgmt_msg_aas_fbck_decoder = proto_register_protocol (
"WiMax AAS-FEEDBACK Messages", /* name */
"WiMax AAS-FEEDBACK (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));
aas_req_handle = register_dissector("mac_mgmt_msg_aas_feedback_req_handler", dissect_mac_mgmt_msg_aas_fbck_req_decoder, proto_mac_mgmt_msg_aas_fbck_decoder);
aas_rsp_handle = register_dissector("mac_mgmt_msg_aas_feedback_rsp_handler", dissect_mac_mgmt_msg_aas_fbck_rsp_decoder, proto_mac_mgmt_msg_aas_fbck_decoder);
}
void
proto_reg_handoff_mac_mgmt_msg_aas(void)
{
dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_AAS_FBCK_REQ, aas_req_handle);
dissector_add_uint("wmx.mgmtmsg", MAC_MGMT_MSG_AAS_FBCK_RSP, aas_rsp_handle);
}
/*
* Editor modelines - https://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:
*/
|
