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use crate::*;
use crate::afi::*;
#[derive(Debug, Clone, Hash, PartialEq, Eq, PartialOrd, Ord)]
pub struct BgpAddrL2 {
pub rd: BgpRD,
pub site: u16,
pub offset: u16,
pub range: u16,
pub labels: MplsLabels,
}
impl BgpItemLong<BgpAddrL2> for BgpAddrL2 {
fn extract_from(size: usize, buf: &[u8]) -> Result<BgpAddrL2, BgpError> {
if size < 17 {
return Err(BgpError::from_string(format!(
"Invalid FEC length for BgpAddrL2: {:?} bytes",
size
)));
}
let srd = BgpRD::decode_from(BgpTransportMode::IPv4, buf)?;
let lbls = MplsLabels::extract_bits_from(((size - 14) * 8) as u8, &buf[14..])?;
Ok(BgpAddrL2 {
rd: srd.0,
site: getn_u16(&buf[8..10]),
offset: getn_u16(&buf[10..12]),
range: getn_u16(&buf[12..14]),
labels: lbls.0,
})
}
fn pack_to(&self, buf: &mut [u8]) -> Result<usize, BgpError> {
if buf.len()<15 {
return Err(BgpError::insufficient_buffer_size());
}
self.rd.encode_rd_to(buf)?;
setn_u16(self.site,&mut buf[8..10]);
setn_u16(self.offset,&mut buf[10..12]);
setn_u16(self.range,&mut buf[12..14]);
let r=self.labels.set_bits_to(&mut buf[14..])?;
Ok(r.1+14)
}
}
impl std::fmt::Display for BgpAddrL2 {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(
f,
"<{}> {}::{}..{}",
self.rd, self.site, self.offset, self.range
)
}
}
#[derive(Clone, Hash, PartialEq, Eq, PartialOrd, Ord, Debug)]
pub struct BgpL2 {
pub rd: BgpRD,
pub site: u16,
pub offset: u16,
pub range: u16,
}
impl BgpL2 {
pub fn new(srd: BgpRD, st: u16, ofs: u16, rng: u16) -> BgpL2 {
BgpL2 {
rd: srd,
site: st,
offset: ofs,
range: rng,
}
}
}
impl std::fmt::Display for BgpL2 {
fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
write!(
f,
"<{}>site {}-{}..{}",
self.rd, self.site, self.offset, self.range
)
}
}
impl BgpAddrItem<BgpL2> for BgpL2 {
fn decode_from(mode: BgpTransportMode, buf: &[u8]) -> Result<(BgpL2, usize), BgpError> {
if buf.len() >= 14 {
let rdp = BgpRD::decode_from(mode, &buf[0..8])?;
Ok((
BgpL2 {
rd: rdp.0,
site: getn_u16(&buf[8..10]),
offset: getn_u16(&buf[10..12]),
range: getn_u16(&buf[12..14]),
},
14,
))
} else {
Err(BgpError::static_str("Invalid BgpL2 buffer len"))
}
}
fn encode_to(&self, mode: BgpTransportMode, buf: &mut [u8]) -> Result<usize, BgpError> {
let pos = self.rd.encode_to(mode, buf)?;
setn_u16(self.site, &mut buf[pos..]);
setn_u16(self.offset, &mut buf[pos + 2..]);
setn_u16(self.range, &mut buf[pos + 4..]);
Ok(pos + 6)
}
}
#[cfg(feature = "serialization")]
impl serde::Serialize for BgpAddrL2 {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: serde::Serializer,
{
let mut state = serializer.serialize_struct("BgpAddrL2", 5)?;
state.serialize_field("rd", &self.rd)?;
state.serialize_field("site", &self.site)?;
state.serialize_field("offset", &self.offset)?;
state.serialize_field("range", &self.range)?;
state.serialize_field("labels", &self.labels)?;
state.end()
}
}