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
// SPDX-License-Identifier: MIT
use netlink_packet_core::{Emitable, Parseable};
use crate::{
tc::{
TcAttribute, TcFqCodelQdStats, TcFqCodelXstats, TcHandle, TcHeader,
TcMessage, TcMessageBuffer, TcOption, TcQdiscFqCodelOption, TcStats,
TcStats2, TcStatsBasic, TcStatsQueue, TcXstats,
},
AddressFamily,
};
// Setup:
// * Connect a OpenVPN
//
// Capture nlmon of this command:
//
// tc -s qdisc show dev openvpn0
//
// Raw packet modification:
// * rtnetlink header removed.
#[test]
fn test_get_qdisc_fq_codel() {
let raw = vec![
0x00, // AF_UNSPEC
0x00, 0x00, 0x00, // padding
0x1c, 0x00, 0x00, 0x00, // iface index: 28
0x00, 0x00, 0x00, 0x00, // handle 0:0 (TC_H_UNSPEC)
0xff, 0xff, 0xff, 0xff, // parent u32::MAX (TC_H_ROOT)
0x02, 0x00, 0x00, 0x00, // info(refcount): 2
0x0d, 0x00, // length 13
0x01, 0x00, // TCA_KIND
0x66, 0x71, 0x5f, 0x63, 0x6f, 0x64, 0x65, 0x6c, 0x00, 0x00, 0x00, 0x00,
// "fq_codel\0" and 3 bytes pad
0x44, 0x00, // length 68
0x02, 0x00, // TCA_OPTIONS for `fq_codel`
0x08, 0x00, // length 8
0x01, 0x00, // TCA_FQ_CODEL_TARGET
0x87, 0x13, 0x00, 0x00, // 4999
0x08, 0x00, // length 8
0x02, 0x00, // TCA_FQ_CODEL_LIMIT
0x00, 0x28, 0x00, 0x00, // 10240
0x08, 0x00, // length 8
0x03, 0x00, // TCA_FQ_CODEL_INTERVAL
0x9f, 0x86, 0x01, 0x00, // 99999
0x08, 0x00, // length 8
0x04, 0x00, // TCA_FQ_CODEL_ECN
0x01, 0x00, 0x00, 0x00, // 1
0x08, 0x00, // length 8
0x06, 0x00, // TCA_FQ_CODEL_QUANTUM
0x3c, 0x05, 0x00, 0x00, // 1340
0x08, 0x00, // length 8
0x08, 0x00, // TCA_FQ_CODEL_DROP_BATCH_SIZE
0x40, 0x00, 0x00, 0x00, // 64
0x08, 0x00, // length 8
0x09, 0x00, // TCA_FQ_CODEL_MEMORY_LIMIT
0x00, 0x00, 0x00, 0x02, // 33554432
0x08, 0x00, // length 8
0x05, 0x00, // TCA_FQ_CODEL_FLOWS
0x00, 0x04, 0x00, 0x00, // 1024
0x05, 0x00, // length 5
0x0c, 0x00, // TCA_HW_OFFLOAD
0x00, 0x00, 0x00, 0x00, // 0 with padding
0x5c, 0x00, // length 92
0x07, 0x00, // TCA_STATS2
0x2c, 0x00, // length 44
0x04, 0x00, // TCA_STATS_APP
0x00, 0x00, 0x00, 0x00, // TCA_FQ_CODEL_XSTATS_QDISC
0x70, 0x01, 0x00, 0x00, // maxpacket: 368
0x00, 0x00, 0x00, 0x00, // drop_overlimit: 0
0x00, 0x00, 0x00, 0x00, // ecn_mark: 0
0x24, 0x00, 0x00, 0x00, // new_flow_count: 36
0x00, 0x00, 0x00, 0x00, // new_flows_len: 0
0x00, 0x00, 0x00, 0x00, // old_flows_len: 0
0x00, 0x00, 0x00, 0x00, // ce_mark: 0
0x00, 0x00, 0x00, 0x00, // memory_usage: 0
0x00, 0x00, 0x00, 0x00, // drop_overmemory: 0
0x14, 0x00, // length 20
0x01, 0x00, // TCA_STATS_BASIC
0xe2, 0x47, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, // bytes: 14698466
0xb9, 0x67, 0x01, 0x00, // packets: 92089
0x00, 0x00, 0x00, 0x00, // padding
0x18, 0x00, // length 24
0x03, 0x00, // TCA_STATS_QUEUE
0x00, 0x00, 0x00, 0x00, // qlen: 0
0x00, 0x00, 0x00, 0x00, // backlog: 0
0x00, 0x00, 0x00, 0x00, // drops: 0
0x00, 0x00, 0x00, 0x00, // requeues: 0
0x00, 0x00, 0x00, 0x00, // overlimits: 0
0x2c, 0x00, // length 44
0x03, 0x00, // TCA_STATS
0xe2, 0x47, 0xe0, 0x00, 0x00, 0x00, 0x00, 0x00, // bytes: 14698466
0xb9, 0x67, 0x01, 0x00, // packets: 92089
0x00, 0x00, 0x00, 0x00, // drops: 0
0x00, 0x00, 0x00, 0x00, // overlimits: 0
0x00, 0x00, 0x00, 0x00, // bps: 0
0x00, 0x00, 0x00, 0x00, // pps: 0
0x00, 0x00, 0x00, 0x00, // qlen: 0
0x00, 0x00, 0x00, 0x00, // backlog: 0
0x00, 0x00, 0x00, 0x00, // padding
0x2c, 0x00, // length 44
0x04, 0x00, // TCA_XSTATS
0x00, 0x00, 0x00, 0x00, // TCA_FQ_CODEL_XSTATS_QDISC
0x70, 0x01, 0x00, 0x00, // maxpacket: 368
0x00, 0x00, 0x00, 0x00, // drop_overlimit: 0
0x00, 0x00, 0x00, 0x00, // ecn_mark: 0
0x24, 0x00, 0x00, 0x00, // new_flow_count: 36
0x00, 0x00, 0x00, 0x00, // new_flows_len: 0
0x00, 0x00, 0x00, 0x00, // old_flows_len: 0
0x00, 0x00, 0x00, 0x00, // ce_mark: 0
0x00, 0x00, 0x00, 0x00, // memory_usage: 0
0x00, 0x00, 0x00, 0x00, // drop_overmemory: 0
];
let expected = TcMessage {
header: TcHeader {
family: AddressFamily::Unspec,
index: 28,
handle: TcHandle::UNSPEC,
parent: TcHandle::ROOT,
info: 2,
},
attributes: vec![
TcAttribute::Kind("fq_codel".to_string()),
TcAttribute::Options(vec![
TcOption::FqCodel(TcQdiscFqCodelOption::Target(4999)),
TcOption::FqCodel(TcQdiscFqCodelOption::Limit(10240)),
TcOption::FqCodel(TcQdiscFqCodelOption::Interval(99999)),
TcOption::FqCodel(TcQdiscFqCodelOption::Ecn(1)),
TcOption::FqCodel(TcQdiscFqCodelOption::Quantum(1340)),
TcOption::FqCodel(TcQdiscFqCodelOption::DropBatchSize(64)),
TcOption::FqCodel(TcQdiscFqCodelOption::MemoryLimit(33554432)),
TcOption::FqCodel(TcQdiscFqCodelOption::Flows(1024)),
]),
TcAttribute::HwOffload(0),
TcAttribute::Stats2(vec![
TcStats2::App(TcXstats::FqCodel(TcFqCodelXstats::Qdisc(
TcFqCodelQdStats {
maxpacket: 368,
drop_overlimit: 0,
ecn_mark: 0,
new_flow_count: 36,
new_flows_len: 0,
old_flows_len: 0,
ce_mark: 0,
memory_usage: 0,
drop_overmemory: 0,
},
))),
TcStats2::Basic(TcStatsBasic {
bytes: 14698466,
packets: 92089,
}),
TcStats2::Queue(TcStatsQueue {
qlen: 0,
backlog: 0,
drops: 0,
requeues: 0,
overlimits: 0,
}),
]),
TcAttribute::Stats(TcStats {
bytes: 14698466,
packets: 92089,
drops: 0,
overlimits: 0,
bps: 0,
pps: 0,
qlen: 0,
backlog: 0,
}),
TcAttribute::Xstats(TcXstats::FqCodel(TcFqCodelXstats::Qdisc(
TcFqCodelQdStats {
maxpacket: 368,
drop_overlimit: 0,
ecn_mark: 0,
new_flow_count: 36,
new_flows_len: 0,
old_flows_len: 0,
ce_mark: 0,
memory_usage: 0,
drop_overmemory: 0,
},
))),
],
};
assert_eq!(
expected,
TcMessage::parse(&TcMessageBuffer::new(&raw)).unwrap()
);
let mut buf = vec![0; expected.buffer_len()];
expected.emit(&mut buf);
assert_eq!(buf, raw);
}