netlink_packet_route/link/link_info/
xfrm.rs

1// SPDX-License-Identifier: MIT
2
3use netlink_packet_core::{
4    emit_u32, parse_u32, DecodeError, DefaultNla, ErrorContext, Nla, NlaBuffer,
5    Parseable,
6};
7
8const IFLA_XFRM_LINK: u16 = 1;
9const IFLA_XFRM_IF_ID: u16 = 2;
10
11#[derive(Debug, PartialEq, Eq, Clone)]
12#[non_exhaustive]
13pub enum InfoXfrm {
14    Link(u32),
15    IfId(u32),
16    Other(DefaultNla),
17}
18
19impl Nla for InfoXfrm {
20    fn value_len(&self) -> usize {
21        use self::InfoXfrm::*;
22        match self {
23            Link(_) => 4,
24            IfId(_) => 4,
25            Other(nla) => nla.value_len(),
26        }
27    }
28
29    fn emit_value(&self, buffer: &mut [u8]) {
30        use self::InfoXfrm::*;
31        match self {
32            Link(value) => emit_u32(buffer, *value).unwrap(),
33            IfId(value) => emit_u32(buffer, *value).unwrap(),
34            Other(nla) => nla.emit_value(buffer),
35        }
36    }
37
38    fn kind(&self) -> u16 {
39        use self::InfoXfrm::*;
40        match self {
41            Link(_) => IFLA_XFRM_LINK,
42            IfId(_) => IFLA_XFRM_IF_ID,
43            Other(nla) => nla.kind(),
44        }
45    }
46}
47
48impl<'a, T: AsRef<[u8]> + ?Sized> Parseable<NlaBuffer<&'a T>> for InfoXfrm {
49    fn parse(buf: &NlaBuffer<&'a T>) -> Result<Self, DecodeError> {
50        use self::InfoXfrm::*;
51        let payload = buf.value();
52        Ok(match buf.kind() {
53            IFLA_XFRM_LINK => Link(
54                parse_u32(payload).context("invalid IFLA_XFRM_LINK value")?,
55            ),
56            IFLA_XFRM_IF_ID => IfId(
57                parse_u32(payload).context("invalid IFLA_XFRM_IF_ID value")?,
58            ),
59            kind => Other(DefaultNla::parse(buf).context(format!(
60                "unknown NLA type {kind} for IFLA_INFO_DATA(xfrm)"
61            ))?),
62        })
63    }
64}
netlink_packet_route/link/link_info/xfrm.rs

netlink_packet_route/link/link_info/
xfrm.rs
