netlink_packet_route/tc/
message.rs

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1// SPDX-License-Identifier: MIT
2
3use super::{TcAttribute, TcError, TcHeader, TcMessageBuffer};
4use netlink_packet_utils::traits::{Emitable, Parseable, ParseableParametrized};
5
6#[derive(Debug, PartialEq, Eq, Clone, Default)]
7#[non_exhaustive]
8pub struct TcMessage {
9    pub header: TcHeader,
10    pub attributes: Vec<TcAttribute>,
11}
12
13impl TcMessage {
14    pub fn into_parts(self) -> (TcHeader, Vec<TcAttribute>) {
15        (self.header, self.attributes)
16    }
17
18    pub fn from_parts(header: TcHeader, attributes: Vec<TcAttribute>) -> Self {
19        TcMessage { header, attributes }
20    }
21
22    /// Create a new `TcMessage` with the given index
23    pub fn with_index(index: i32) -> Self {
24        Self { header: TcHeader { index, ..Default::default() }, attributes: Vec::new() }
25    }
26}
27
28impl<'a, T: AsRef<[u8]> + 'a> Parseable<TcMessageBuffer<&'a T>> for TcMessage {
29    type Error = TcError;
30    fn parse(buf: &TcMessageBuffer<&'a T>) -> Result<Self, TcError> {
31        Ok(Self {
32            header: TcHeader::parse(buf).unwrap(),
33            attributes: Vec::<TcAttribute>::parse(buf)?,
34        })
35    }
36}
37
38impl<'a, T: AsRef<[u8]> + 'a> Parseable<TcMessageBuffer<&'a T>> for Vec<TcAttribute> {
39    type Error = TcError;
40    fn parse(buf: &TcMessageBuffer<&'a T>) -> Result<Self, TcError> {
41        let mut attributes = vec![];
42        let mut kind = String::new();
43
44        for nla_buf in buf.attributes() {
45            let attribute = TcAttribute::parse_with_param(&nla_buf?, kind.as_str())?;
46            if let TcAttribute::Kind(s) = &attribute {
47                kind = s.to_string();
48            }
49            attributes.push(attribute)
50        }
51        Ok(attributes)
52    }
53}
54
55impl Emitable for TcMessage {
56    fn buffer_len(&self) -> usize {
57        self.header.buffer_len() + self.attributes.as_slice().buffer_len()
58    }
59
60    fn emit(&self, buffer: &mut [u8]) {
61        self.header.emit(buffer);
62        self.attributes.as_slice().emit(&mut buffer[self.header.buffer_len()..]);
63    }
64}
netlink_packet_route/tc/message.rs

netlink_packet_route/tc/
message.rs
