nlink 0.13.0

Async netlink library for Linux network configuration
Documentation 
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

//! CAKE qdisc options.

use crate::netlink::{Error, MessageBuilder, Result, types::tc::qdisc::cake::*};

/// Build CAKE qdisc options from parameters.
///
/// Supported parameters:
/// - `bandwidth RATE` - Bandwidth limit (e.g., "100mbit")
/// - `rtt TIME` - RTT estimate (e.g., "100ms")
/// - `target TIME` - Target delay
/// - `overhead BYTES` - Per-packet overhead (can be negative)
/// - `mpu BYTES` - Minimum packet unit
/// - `diffserv3` / `diffserv4` / `diffserv8` / `besteffort` / `precedence` - Diffserv mode
/// - `flowblind` / `srchost` / `dsthost` / `hosts` / `flows` / `dual-srchost` /
///   `dual-dsthost` / `triple-isolate` - Flow isolation mode
/// - `noatm` / `atm` / `ptm` - ATM/PTM mode
/// - `raw` - Disable overhead compensation
/// - `nat` / `nonat` - Enable/disable NAT mode
/// - `wash` / `nowash` - Enable/disable DSCP washing
/// - `ingress` / `egress` - Ingress/egress mode
/// - `ack-filter` / `ack-filter-aggressive` / `no-ack-filter` - ACK filtering mode
/// - `split-gso` / `no-split-gso` - GSO splitting
/// - `memlimit SIZE` - Memory limit
/// - `fwmark MASK` - fwmark mask for flow classification
/// - `autorate-ingress` - Enable autorate
pub fn build(builder: &mut MessageBuilder, params: &[String]) -> Result<()> {
    let mut i = 0;
    while i < params.len() {
        match params[i].as_str() {
            "bandwidth" if i + 1 < params.len() => {
                let rate = crate::util::parse::get_rate(&params[i + 1])
                    .map_err(|_| Error::InvalidMessage("invalid bandwidth".into()))?;
                builder.append_attr_u64(TCA_CAKE_BASE_RATE64, rate);
                i += 2;
            }
            "unlimited" => {
                builder.append_attr_u64(TCA_CAKE_BASE_RATE64, 0);
                i += 1;
            }
            "rtt" if i + 1 < params.len() => {
                let rtt = crate::util::parse::get_time(&params[i + 1])
                    .map_err(|_| Error::InvalidMessage("invalid rtt".into()))?;
                builder.append_attr_u32(TCA_CAKE_RTT, rtt.as_micros() as u32);
                i += 2;
            }
            "target" if i + 1 < params.len() => {
                let target = crate::util::parse::get_time(&params[i + 1])
                    .map_err(|_| Error::InvalidMessage("invalid target".into()))?;
                builder.append_attr_u32(TCA_CAKE_TARGET, target.as_micros() as u32);
                i += 2;
            }
            "overhead" if i + 1 < params.len() => {
                let overhead: i32 = params[i + 1]
                    .parse()
                    .map_err(|_| Error::InvalidMessage("invalid overhead".into()))?;
                builder.append_attr(TCA_CAKE_OVERHEAD, &overhead.to_ne_bytes());
                i += 2;
            }
            "mpu" if i + 1 < params.len() => {
                let mpu: u32 = params[i + 1]
                    .parse()
                    .map_err(|_| Error::InvalidMessage("invalid mpu".into()))?;
                builder.append_attr_u32(TCA_CAKE_MPU, mpu);
                i += 2;
            }
            "memlimit" if i + 1 < params.len() => {
                let mem = crate::util::parse::get_size(&params[i + 1])
                    .map_err(|_| Error::InvalidMessage("invalid memlimit".into()))?;
                builder.append_attr_u32(TCA_CAKE_MEMORY, mem as u32);
                i += 2;
            }
            "fwmark" if i + 1 < params.len() => {
                let mask: u32 = params[i + 1]
                    .parse()
                    .map_err(|_| Error::InvalidMessage("invalid fwmark".into()))?;
                builder.append_attr_u32(TCA_CAKE_FWMARK, mask);
                i += 2;
            }
            // Diffserv modes
            "diffserv3" => {
                builder.append_attr_u32(TCA_CAKE_DIFFSERV_MODE, CAKE_DIFFSERV_DIFFSERV3);
                i += 1;
            }
            "diffserv4" => {
                builder.append_attr_u32(TCA_CAKE_DIFFSERV_MODE, CAKE_DIFFSERV_DIFFSERV4);
                i += 1;
            }
            "diffserv8" => {
                builder.append_attr_u32(TCA_CAKE_DIFFSERV_MODE, CAKE_DIFFSERV_DIFFSERV8);
                i += 1;
            }
            "besteffort" => {
                builder.append_attr_u32(TCA_CAKE_DIFFSERV_MODE, CAKE_DIFFSERV_BESTEFFORT);
                i += 1;
            }
            "precedence" => {
                builder.append_attr_u32(TCA_CAKE_DIFFSERV_MODE, CAKE_DIFFSERV_PRECEDENCE);
                i += 1;
            }
            // Flow modes
            "flowblind" => {
                builder.append_attr_u32(TCA_CAKE_FLOW_MODE, CAKE_FLOW_NONE);
                i += 1;
            }
            "srchost" => {
                builder.append_attr_u32(TCA_CAKE_FLOW_MODE, CAKE_FLOW_SRC_IP);
                i += 1;
            }
            "dsthost" => {
                builder.append_attr_u32(TCA_CAKE_FLOW_MODE, CAKE_FLOW_DST_IP);
                i += 1;
            }
            "hosts" => {
                builder.append_attr_u32(TCA_CAKE_FLOW_MODE, CAKE_FLOW_HOSTS);
                i += 1;
            }
            "flows" => {
                builder.append_attr_u32(TCA_CAKE_FLOW_MODE, CAKE_FLOW_FLOWS);
                i += 1;
            }
            "dual-srchost" => {
                builder.append_attr_u32(TCA_CAKE_FLOW_MODE, CAKE_FLOW_DUAL_SRC);
                i += 1;
            }
            "dual-dsthost" => {
                builder.append_attr_u32(TCA_CAKE_FLOW_MODE, CAKE_FLOW_DUAL_DST);
                i += 1;
            }
            "triple-isolate" => {
                builder.append_attr_u32(TCA_CAKE_FLOW_MODE, CAKE_FLOW_TRIPLE);
                i += 1;
            }
            // ATM modes
            "noatm" => {
                builder.append_attr_u32(TCA_CAKE_ATM, CAKE_ATM_NONE);
                i += 1;
            }
            "atm" => {
                builder.append_attr_u32(TCA_CAKE_ATM, CAKE_ATM_ATM);
                i += 1;
            }
            "ptm" => {
                builder.append_attr_u32(TCA_CAKE_ATM, CAKE_ATM_PTM);
                i += 1;
            }
            // Other options
            "raw" => {
                builder.append_attr_u32(TCA_CAKE_RAW, 1);
                i += 1;
            }
            "nat" => {
                builder.append_attr_u32(TCA_CAKE_NAT, 1);
                i += 1;
            }
            "nonat" => {
                builder.append_attr_u32(TCA_CAKE_NAT, 0);
                i += 1;
            }
            "wash" => {
                builder.append_attr_u32(TCA_CAKE_WASH, 1);
                i += 1;
            }
            "nowash" => {
                builder.append_attr_u32(TCA_CAKE_WASH, 0);
                i += 1;
            }
            "ingress" => {
                builder.append_attr_u32(TCA_CAKE_INGRESS, 1);
                i += 1;
            }
            "egress" => {
                builder.append_attr_u32(TCA_CAKE_INGRESS, 0);
                i += 1;
            }
            "ack-filter" => {
                builder.append_attr_u32(TCA_CAKE_ACK_FILTER, CAKE_ACK_FILTER);
                i += 1;
            }
            "ack-filter-aggressive" => {
                builder.append_attr_u32(TCA_CAKE_ACK_FILTER, CAKE_ACK_AGGRESSIVE);
                i += 1;
            }
            "no-ack-filter" => {
                builder.append_attr_u32(TCA_CAKE_ACK_FILTER, CAKE_ACK_NONE);
                i += 1;
            }
            "split-gso" => {
                builder.append_attr_u32(TCA_CAKE_SPLIT_GSO, 1);
                i += 1;
            }
            "no-split-gso" => {
                builder.append_attr_u32(TCA_CAKE_SPLIT_GSO, 0);
                i += 1;
            }
            "autorate-ingress" => {
                builder.append_attr_u32(TCA_CAKE_AUTORATE, 1);
                i += 1;
            }
            _ => i += 1,
        }
    }
    Ok(())
}