netlink_packet_route/link/link_info/
ipoib.rs

1// SPDX-License-Identifier: MIT
2
3use netlink_packet_core::{
4    emit_u16, parse_u16, DecodeError, DefaultNla, ErrorContext, Nla, NlaBuffer,
5    Parseable,
6};
7
8const IFLA_IPOIB_PKEY: u16 = 1;
9const IFLA_IPOIB_MODE: u16 = 2;
10const IFLA_IPOIB_UMCAST: u16 = 3;
11
12#[derive(Debug, PartialEq, Eq, Clone)]
13#[non_exhaustive]
14pub enum InfoIpoib {
15    Pkey(u16),
16    Mode(IpoibMode),
17    UmCast(u16),
18    Other(DefaultNla),
19}
20
21impl Nla for InfoIpoib {
22    fn value_len(&self) -> usize {
23        use self::InfoIpoib::*;
24        match self {
25            Pkey(_) | Mode(_) | UmCast(_) => 2,
26            Other(nla) => nla.value_len(),
27        }
28    }
29
30    fn emit_value(&self, buffer: &mut [u8]) {
31        use self::InfoIpoib::*;
32        match self {
33            Pkey(value) => emit_u16(buffer, *value).unwrap(),
34            Mode(value) => emit_u16(buffer, (*value).into()).unwrap(),
35            UmCast(value) => emit_u16(buffer, *value).unwrap(),
36            Other(nla) => nla.emit_value(buffer),
37        }
38    }
39
40    fn kind(&self) -> u16 {
41        use self::InfoIpoib::*;
42        match self {
43            Pkey(_) => IFLA_IPOIB_PKEY,
44            Mode(_) => IFLA_IPOIB_MODE,
45            UmCast(_) => IFLA_IPOIB_UMCAST,
46            Other(nla) => nla.kind(),
47        }
48    }
49}
50
51impl<'a, T: AsRef<[u8]> + ?Sized> Parseable<NlaBuffer<&'a T>> for InfoIpoib {
52    fn parse(buf: &NlaBuffer<&'a T>) -> Result<Self, DecodeError> {
53        use self::InfoIpoib::*;
54        let payload = buf.value();
55        Ok(match buf.kind() {
56            IFLA_IPOIB_PKEY => Pkey(
57                parse_u16(payload).context("invalid IFLA_IPOIB_PKEY value")?,
58            ),
59            IFLA_IPOIB_MODE => Mode(
60                parse_u16(payload)
61                    .context("invalid IFLA_IPOIB_MODE value")?
62                    .into(),
63            ),
64            IFLA_IPOIB_UMCAST => UmCast(
65                parse_u16(payload)
66                    .context("invalid IFLA_IPOIB_UMCAST value")?,
67            ),
68            kind => Other(DefaultNla::parse(buf).context(format!(
69                "unknown NLA type {kind} for IFLA_INFO_DATA(ipoib)"
70            ))?),
71        })
72    }
73}
74
75const IPOIB_MODE_DATAGRAM: u16 = 0;
76const IPOIB_MODE_CONNECTED: u16 = 1;
77
78#[derive(Debug, PartialEq, Eq, Clone, Copy)]
79#[non_exhaustive]
80pub enum IpoibMode {
81    Datagram,
82    Connected,
83    Other(u16),
84}
85
86impl From<u16> for IpoibMode {
87    fn from(d: u16) -> Self {
88        match d {
89            IPOIB_MODE_DATAGRAM => Self::Datagram,
90            IPOIB_MODE_CONNECTED => Self::Connected,
91            _ => Self::Other(d),
92        }
93    }
94}
95
96impl From<IpoibMode> for u16 {
97    fn from(v: IpoibMode) -> u16 {
98        match v {
99            IpoibMode::Datagram => IPOIB_MODE_DATAGRAM,
100            IpoibMode::Connected => IPOIB_MODE_CONNECTED,
101            IpoibMode::Other(d) => d,
102        }
103    }
104}
netlink_packet_route/link/link_info/ipoib.rs

netlink_packet_route/link/link_info/
ipoib.rs
