netlink_packet_route/prefix/
message.rs

1// SPDX-License-Identifier: MIT
2
3use anyhow::Context;
4
5use netlink_packet_utils::{
6    traits::{Emitable, Parseable},
7    DecodeError,
8};
9
10use super::{
11    attribute::PrefixAttribute,
12    header::{PrefixHeader, PrefixMessageBuffer},
13};
14
15#[derive(Debug, PartialEq, Eq, Clone, Default)]
16pub struct PrefixMessage {
17    pub header: PrefixHeader,
18    pub attributes: Vec<PrefixAttribute>,
19}
20
21impl Emitable for PrefixMessage {
22    fn buffer_len(&self) -> usize {
23        self.header.buffer_len() + self.attributes.as_slice().buffer_len()
24    }
25
26    fn emit(&self, buffer: &mut [u8]) {
27        self.header.emit(buffer);
28        self.attributes
29            .as_slice()
30            .emit(&mut buffer[self.header.buffer_len()..]);
31    }
32}
33
34impl<T: AsRef<[u8]>> Parseable<PrefixMessageBuffer<T>> for PrefixHeader {
35    fn parse(buf: &PrefixMessageBuffer<T>) -> Result<Self, DecodeError> {
36        Ok(Self {
37            prefix_family: buf.prefix_family(),
38            ifindex: buf.ifindex(),
39            prefix_type: buf.prefix_type(),
40            prefix_len: buf.prefix_len(),
41            flags: buf.flags(),
42        })
43    }
44}
45
46impl<'a, T: AsRef<[u8]> + 'a> Parseable<PrefixMessageBuffer<&'a T>>
47    for PrefixMessage
48{
49    fn parse(buf: &PrefixMessageBuffer<&'a T>) -> Result<Self, DecodeError> {
50        Ok(Self {
51            header: PrefixHeader::parse(buf)
52                .context("failed to parse prefix message header")?,
53            attributes: Vec::<PrefixAttribute>::parse(buf)
54                .context("failed to parse prefix message attributes")?,
55        })
56    }
57}
58
59impl<'a, T: AsRef<[u8]> + 'a> Parseable<PrefixMessageBuffer<&'a T>>
60    for Vec<PrefixAttribute>
61{
62    fn parse(buf: &PrefixMessageBuffer<&'a T>) -> Result<Self, DecodeError> {
63        let mut nlas = vec![];
64        for nla_buf in buf.nlas() {
65            nlas.push(PrefixAttribute::parse(&nla_buf?)?);
66        }
67        Ok(nlas)
68    }
69}
netlink_packet_route/prefix/message.rs

netlink_packet_route/prefix/
message.rs
