-
Notifications
You must be signed in to change notification settings - Fork 5
/
Copy pathwcn36xx_rxbd.lua
206 lines (174 loc) · 9.84 KB
/
wcn36xx_rxbd.lua
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
-- Copyright (C) 2013 Mikael Kanstrup ([email protected])
--
-- 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.
local wcn36xx = Proto("wcn36xx_rxbd", "wcn36xx rxbd dissector")
local f = wcn36xx.fields
function wcn36xx.init()
-- Hook into ethertype parser
-- Bogus value 0x3661 used together with textpcap dummy header generation
local udp_table = DissectorTable.get("ethertype")
local pattern = 0x3661
udp_table:add(pattern, wcn36xx)
end
function parse_pdu(buffer, pinfo, tree)
-- todo implement parser
local subtree = tree:add(wcn36xx, buffer(0, 16), "pdu")
local n = 0
local bd1 = buffer(n, 4); n = n + 4
subtree:add(f.pdu_dpu_fb, bd1)
subtree:add(f.pdu_adu_fb, bd1)
subtree:add(f.pdu_pdu_id, bd1)
bd1 = buffer(n, 4); n = n + 4
subtree:add(f.pdu_tail_pid_idx, bd1)
subtree:add(f.pdu_head_pid_idx, bd1)
bd1 = buffer(n, 4); n = n + 4
subtree:add(f.pdu_pdu_count, bd1)
subtree:add(f.pdu_mpu_data_off, bd1)
subtree:add(f.pdu_mpu_header_off, bd1)
subtree:add(f.pdu_mpu_header_len, bd1)
bd1 = buffer(n, 4); n = n + 4
subtree:add(f.pdu_reserved4, bd1)
subtree:add(f.pdu_tid, bd1)
subtree:add(f.pdu_reserved3, bd1)
subtree:add(f.pdu_mpdu_len, bd1)
return n
end
function bitval(nr1, count)
-- bitfields apparently are MSB0
-- todo tidy this function
local nr = 31 - nr1 + count - 1
local tmp = bit.rshift(0xffffffff, 32 - count)
return bit.lshift(tmp, nr + 1 - count)
end
function wcn36xx.dissector(inbuffer, pinfo, tree)
local n = 0
local buffer = inbuffer
pinfo.cols.protocol = "wcn36xx_rxbd"
pinfo.cols.info = ""
if (buffer:len() <= 46) then
-- Ethernet frames are 64 (60) bytes minimum. Remove dummy
-- trailing data if commands are smaller than that.
buffer = buffer(0, cmd_len)
end
local subtree = tree:add(wcn36xx, buffer(), "wcn36xx rxbd protocol data")
local bd1 = buffer(n, 4); n = n + 4
subtree:add(f.rxbd_bdt, bd1)
subtree:add(f.rxbd_ft, bd1)
subtree:add(f.rxbd_dpu_ne, bd1)
subtree:add(f.rxbd_rx_key_id, bd1)
subtree:add(f.rxbd_ub, bd1)
subtree:add(f.rxbd_rmf, bd1)
subtree:add(f.rxbd_uma_bypass, bd1)
subtree:add(f.rxbd_csr11, bd1)
subtree:add(f.rxbd_reserved0, bd1)
subtree:add(f.rxbd_scan_learn, bd1)
subtree:add(f.rxbd_rx_chan, bd1)
subtree:add(f.rxbd_rtsf, bd1)
subtree:add(f.rxbd_bsf, bd1)
subtree:add(f.rxbd_a2hf, bd1)
subtree:add(f.rxbd_st_auf, bd1)
subtree:add(f.rxbd_dpu_sign, bd1)
subtree:add(f.rxbd_dpu_rf, bd1)
n = n + parse_pdu(buffer(n):tvb(), pinfo, subtree)
bd1 = buffer(n, 4); n = n + 4
subtree:add(f.rxbd_addr3, bd1)
subtree:add(f.rxbd_addr2, bd1)
subtree:add(f.rxbd_addr1, bd1)
subtree:add(f.rxbd_dpu_desc_idx, bd1)
bd1 = buffer(n, 4); n = n + 4
subtree:add(f.rxbd_rxp_flags, bd1)
subtree:add(f.rxbd_rate_id, bd1)
local phy_stat0 = buffer(n, 4):uint()
local rssi = -(100 - buffer(n + 3, 1):uint())
subtree:add(f.rxbd_phy_stat0, buffer(n, 4), phy_stat0, nil, "(rssi = "..rssi..")"); n = n + 4
local phy_stat1 = buffer(n, 4):uint()
local snr = buffer(n + 3, 1):uint()
subtree:add(f.rxbd_phy_stat1, buffer(n, 4), phy_stat1, nil, "(snr = "..snr..")"); n = n + 4
subtree:add(f.rxbd_rx_times, buffer(n, 4)); n = n + 4
subtree:add(f.rxbd_pmi_cmd, buffer(n, 24)); n = n + 24
bd1 = buffer(n, 4); n = n + 4
subtree:add(f.rxbd_reserved7, bd1)
subtree:add(f.rxbd_reorder_slot_id, bd1)
subtree:add(f.rxbd_reorder_fwd_id, bd1)
subtree:add(f.rxbd_reserved6, bd1)
subtree:add(f.rxbd_reorder_code, bd1)
bd1 = buffer(n, 4); n = n + 4
subtree:add(f.rxbd_exp_seq_num, bd1)
subtree:add(f.rxbd_cur_seq_num, bd1)
subtree:add(f.rxbd_fr_type_subtype, bd1)
bd1 = buffer(n, 4); n = n + 4
subtree:add(f.rxbd_msdu_size, bd1)
subtree:add(f.rxbd_sub_fr_id, bd1)
subtree:add(f.rxbd_proc_order, bd1)
subtree:add(f.rxbd_reserved9, bd1)
subtree:add(f.rxbd_aef, bd1)
subtree:add(f.rxbd_lsf, bd1)
subtree:add(f.rxbd_esf, bd1)
subtree:add(f.rxbd_asf, bd1)
end
-- Protocol fields
local curr = 31
f.rxbd_bdt = ProtoField.uint32("wcn36xx.rxbd.bdt", "bdt", base.HEX, nil, bitval(curr, 2)); curr = curr - 2
f.rxbd_ft = ProtoField.uint32("wcn36xx.rxbd.ft", "ft", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_dpu_ne = ProtoField.uint32("wcn36xx.rxbd.dpu_ne", "dpu_ne", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_rx_key_id = ProtoField.uint32("wcn36xx.rxbd.rx_key_id", "rx_key_id", base.HEX, nil, bitval(curr, 3)); curr = curr - 3
f.rxbd_ub = ProtoField.uint32("wcn36xx.rxbd.ub", "ub", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_rmf = ProtoField.uint32("wcn36xx.rxbd.rmf", "rmf", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_uma_bypass = ProtoField.uint32("wcn36xx.rxbd.uma_bypass", "uma_bypass", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_csr11 = ProtoField.uint32("wcn36xx.rxbd.csr11", "csr11", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_reserved0 = ProtoField.uint32("wcn36xx.rxbd.reserved0", "reserved0", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_scan_learn = ProtoField.uint32("wcn36xx.rxbd.scan_learn", "scan_learn", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_rx_chan = ProtoField.uint32("wcn36xx.rxbd.rx_chan", "rx_chan", base.HEX, nil, bitval(curr, 4)); curr = curr - 4
f.rxbd_rtsf = ProtoField.uint32("wcn36xx.rxbd.rtsf", "rtsf", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_bsf = ProtoField.uint32("wcn36xx.rxbd.bsf", "bsf", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_a2hf = ProtoField.uint32("wcn36xx.rxbd.a2hf", "a2hf", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_st_auf = ProtoField.uint32("wcn36xx.rxbd.st_auf", "st_auf", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_dpu_sign = ProtoField.uint32("wcn36xx.rxbd.dpu_sign", "dpu_sign", base.HEX, nil, bitval(curr, 3)); curr = curr - 3
f.rxbd_dpu_rf = ProtoField.uint32("wcn36xx.rxbd.dpu_rf", "dpu_rf", base.HEX, nil, bitval(curr, 8)); curr = curr - 8
curr = 31
f.rxbd_addr3 = ProtoField.uint32("wcn36xx.rxbd.addr3", "addr3", base.HEX, nil, bitval(curr, 8)); curr = curr - 8
f.rxbd_addr2 = ProtoField.uint32("wcn36xx.rxbd.addr2", "addr2", base.HEX, nil, bitval(curr, 8)); curr = curr - 8
f.rxbd_addr1 = ProtoField.uint32("wcn36xx.rxbd.addr1", "addr1", base.HEX, nil, bitval(curr, 8)); curr = curr - 8
f.rxbd_dpu_desc_idx = ProtoField.uint32("wcn36xx.rxbd.dpu_desc_idx", "dpu_desc_idx", base.HEX, nil, bitval(curr, 8)); curr = curr - 8
curr = 31
f.rxbd_rxp_flags = ProtoField.uint32("wcn36xx.rxbd.rxp_flags", "rxp_flags", base.HEX, nil, bitval(curr, 23)); curr = curr - 23
f.rxbd_rate_id = ProtoField.uint32("wcn36xx.rxbd.rate_id", "rate_id", base.HEX, nil, bitval(curr, 9)); curr = curr - 9
f.rxbd_phy_stat0 = ProtoField.uint32("wcn36xx.rxbd.phy_stat0", "phy_stat0", base.HEX)
f.rxbd_phy_stat1 = ProtoField.uint32("wcn36xx.rxbd.phy_stat1", "phy_stat1", base.HEX)
f.rxbd_rx_times = ProtoField.uint32("wcn36xx.rxbd.rx_times", "rx_times", base.HEX)
f.rxbd_pmi_cmd = ProtoField.bytes("wcn36xx.rxbd.pmi_cmd", "pmi_cmd", base.HEX)
curr = 31
f.rxbd_reserved7 = ProtoField.uint32("wcn36xx.rxbd.reserved7", "reserved7", base.HEX, nil, bitval(curr, 4)); curr = curr - 4
f.rxbd_reorder_slot_id = ProtoField.uint32("wcn36xx.rxbd.reorder_slot_id", "reorder_slot_id", base.HEX, nil, bitval(curr, 6)); curr = curr - 6
f.rxbd_reorder_fwd_id = ProtoField.uint32("wcn36xx.rxbd.reorder_fwd_id", "reorder_fwd_id", base.HEX, nil, bitval(curr, 6)); curr = curr - 6
f.rxbd_reserved6 = ProtoField.uint32("wcn36xx.rxbd.reserved6", "reserved6", base.HEX, nil, bitval(curr, 12)); curr = curr - 12
f.rxbd_reorder_code = ProtoField.uint32("wcn36xx.rxbd.reorder_code", "reorder_code", base.HEX, nil, bitval(curr, 4)); curr = curr - 4
curr = 31
f.rxbd_exp_seq_num = ProtoField.uint32("wcn36xx.rxbd.exp_seq_num", "exp_seq_num", base.HEX, nil, bitval(curr, 12)); curr = curr - 12
f.rxbd_cur_seq_num = ProtoField.uint32("wcn36xx.rxbd.cur_seq_num", "cur_seq_num", base.HEX, nil, bitval(curr, 12)); curr = curr - 12
f.rxbd_fr_type_subtype = ProtoField.uint32("wcn36xx.rxbd.fr_type_subtype", "fr_type_subtype", base.HEX, nil, bitval(curr, 8)); curr = curr - 8
curr = 31
f.rxbd_exp_seq_num = ProtoField.uint32("wcn36xx.rxbd.exp_seq_num", "exp_seq_num", base.HEX, nil, bitval(curr, 12)); curr = curr - 12
f.rxbd_cur_seq_num = ProtoField.uint32("wcn36xx.rxbd.cur_seq_num", "cur_seq_num", base.HEX, nil, bitval(curr, 12)); curr = curr - 12
f.rxbd_fr_type_subtype = ProtoField.uint32("wcn36xx.rxbd.fr_type_subtype", "fr_type_subtype", base.HEX, nil, bitval(curr, 8)); curr = curr - 8
curr = 31
f.rxbd_msdu_size = ProtoField.uint32("wcn36xx.rxbd.msdu_size", "msdu_size", base.DEC, nil, bitval(curr, 16)); curr = curr - 16
f.rxbd_sub_fr_id = ProtoField.uint32("wcn36xx.rxbd.fr_id", "fr_id", base.HEX, nil, bitval(curr, 4)); curr = curr - 4
f.rxbd_proc_order = ProtoField.uint32("wcn36xx.rxbd.proc_order", "proc_order", base.HEX, nil, bitval(curr, 4)); curr = curr - 4
f.rxbd_reserved9 = ProtoField.uint32("wcn36xx.rxbd.reserved9", "reserved9", base.HEX, nil, bitval(curr, 4)); curr = curr - 4
f.rxbd_aef = ProtoField.uint32("wcn36xx.rxbd.aef", "aef", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_lsf = ProtoField.uint32("wcn36xx.rxbd.lsf", "lsf", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_esf = ProtoField.uint32("wcn36xx.rxbd.esf", "esf", base.HEX, nil, bitval(curr, 1)); curr = curr - 1
f.rxbd_asf = ProtoField.uint32("wcn36xx.rxbd.asf", "asf", base.HEX, nil, bitval(curr, 1)); curr = curr - 1