netlink_packet_route/neighbour_discovery_user_option/
nla.rsuse anyhow::Context;
use netlink_packet_utils::nla::{self, DefaultNla, NlaBuffer};
use netlink_packet_utils::traits::Parseable;
use netlink_packet_utils::DecodeError;
use super::constants;
#[derive(Debug, PartialEq, Eq, Clone)]
#[non_exhaustive]
pub enum Nla {
SourceLinkLocalAddress(Vec<u8>),
Other(DefaultNla),
}
impl nla::Nla for Nla {
fn value_len(&self) -> usize {
use self::Nla::*;
match *self {
SourceLinkLocalAddress(ref bytes) => bytes.len(),
Other(ref attr) => attr.value_len(),
}
}
fn emit_value(&self, buffer: &mut [u8]) {
use self::Nla::*;
match *self {
SourceLinkLocalAddress(ref bytes) => buffer.copy_from_slice(bytes.as_slice()),
Other(ref attr) => attr.emit_value(buffer),
}
}
fn kind(&self) -> u16 {
use self::Nla::*;
use constants::*;
match *self {
SourceLinkLocalAddress(_) => ND_OPT_SOURCE_LL_ADDR,
Other(ref attr) => attr.kind(),
}
}
}
impl<'a, T: AsRef<[u8]> + ?Sized> Parseable<NlaBuffer<&'a T>> for Nla {
type Error = DecodeError;
fn parse(buf: &NlaBuffer<&'a T>) -> Result<Self, DecodeError> {
use self::Nla::*;
let payload = buf.value();
Ok(match buf.kind() {
constants::ND_OPT_SOURCE_LL_ADDR => SourceLinkLocalAddress(payload.to_vec()),
_ => Other(DefaultNla::parse(buf).context("invalid NLA (unknown kind)")?),
})
}
}