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mod metrics; pub use self::metrics::RouteMetricsNla; use byteorder::{ByteOrder, NativeEndian}; use std::mem::size_of; use constants::*; use utils::{parse_u16, parse_u32}; use {DefaultNla, Emitable, NativeNla, Nla, NlaBuffer, Parseable, Result}; #[repr(C)] #[derive(Debug, Clone, Copy, Eq, PartialEq)] pub struct RouteCacheInfo { pub clntref: u32, pub last_use: u32, pub expires: u32, pub error: u32, pub used: u32, pub id: u32, pub ts: u32, pub ts_age: u32, } impl NativeNla for RouteCacheInfo {} #[repr(C)] #[derive(Debug, Clone, Copy, Eq, PartialEq)] pub struct RouteMfcStats { pub packets: u64, pub bytes: u64, pub wrong_if: u64, } impl NativeNla for RouteMfcStats {} #[derive(Debug, PartialEq, Eq, Clone)] pub enum RouteNla { Unspec(Vec<u8>), Destination(Vec<u8>), Source(Vec<u8>), Gateway(Vec<u8>), PrefSource(Vec<u8>), Metrics(RouteMetricsNla), MultiPath(Vec<u8>), CacheInfo(RouteCacheInfo), Session(Vec<u8>), MpAlgo(Vec<u8>), MfcStats(RouteMfcStats), Via(Vec<u8>), NewDestination(Vec<u8>), Pref(Vec<u8>), Encap(Vec<u8>), Expires(Vec<u8>), Pad(Vec<u8>), Uid(Vec<u8>), TtlPropagate(Vec<u8>), EncapType(u16), Iif(u32), Oif(u32), Priority(u32), ProtocolInfo(u32), Flow(u32), Table(u32), Mark(u32), Other(DefaultNla), } impl Nla for RouteNla { #[cfg_attr(nightly, rustfmt::skip)] fn value_len(&self) -> usize { use self::RouteNla::*; match *self { Unspec(ref bytes) | Destination(ref bytes) | Source(ref bytes) | Gateway(ref bytes) | PrefSource(ref bytes) | MultiPath(ref bytes) | Session(ref bytes) | MpAlgo(ref bytes) | Via(ref bytes) | NewDestination(ref bytes) | Pref(ref bytes) | Encap(ref bytes) | Expires(ref bytes) | Pad(ref bytes) | Uid(ref bytes) | TtlPropagate(ref bytes) => bytes.len(), EncapType(_) => size_of::<u16>(), Iif(_) | Oif(_) | Priority(_) | ProtocolInfo(_) | Flow(_) | Table(_) | Mark(_) => size_of::<u32>(), CacheInfo(_) => size_of::<RouteCacheInfo>(), MfcStats(_) => size_of::<RouteMfcStats>(), Metrics(ref attr) => attr.buffer_len(), Other(ref attr) => attr.value_len(), } } #[cfg_attr(nightly, rustfmt::skip)] fn emit_value(&self, buffer: &mut [u8]) { use self::RouteNla::*; match *self { Unspec(ref bytes) | Destination(ref bytes) | Source(ref bytes) | Gateway(ref bytes) | PrefSource(ref bytes) | MultiPath(ref bytes) | Session(ref bytes) | MpAlgo(ref bytes) | Via(ref bytes) | NewDestination(ref bytes) | Pref(ref bytes) | Encap(ref bytes) | Expires(ref bytes) | Pad(ref bytes) | Uid(ref bytes) | TtlPropagate(ref bytes) => buffer.copy_from_slice(bytes.as_slice()), EncapType(value) => NativeEndian::write_u16(buffer, value), Iif(value) | Oif(value) | Priority(value) | ProtocolInfo(value) | Flow(value) | Table(value) | Mark(value) => NativeEndian::write_u32(buffer, value), CacheInfo(ref cache_info) => cache_info.to_bytes(buffer), MfcStats(ref mfc_stats) => mfc_stats.to_bytes(buffer), Metrics(ref attr) => attr.emit(buffer), Other(ref attr) => attr.emit_value(buffer), } } fn kind(&self) -> u16 { use self::RouteNla::*; match *self { Unspec(_) => RTA_UNSPEC, Destination(_) => RTA_DST, Source(_) => RTA_SRC, Iif(_) => RTA_IIF, Oif(_) => RTA_OIF, Gateway(_) => RTA_GATEWAY, Priority(_) => RTA_PRIORITY, PrefSource(_) => RTA_PREFSRC, Metrics(_) => RTA_METRICS, MultiPath(_) => RTA_MULTIPATH, ProtocolInfo(_) => RTA_PROTOINFO, Flow(_) => RTA_FLOW, CacheInfo(_) => RTA_CACHEINFO, Session(_) => RTA_SESSION, MpAlgo(_) => RTA_MP_ALGO, Table(_) => RTA_TABLE, Mark(_) => RTA_MARK, MfcStats(_) => RTA_MFC_STATS, Via(_) => RTA_VIA, NewDestination(_) => RTA_NEWDST, Pref(_) => RTA_PREF, EncapType(_) => RTA_ENCAP_TYPE, Encap(_) => RTA_ENCAP, Expires(_) => RTA_EXPIRES, Pad(_) => RTA_PAD, Uid(_) => RTA_UID, TtlPropagate(_) => RTA_TTL_PROPAGATE, Other(ref attr) => attr.kind(), } } } impl<'buffer, T: AsRef<[u8]> + ?Sized> Parseable<RouteNla> for NlaBuffer<&'buffer T> { fn parse(&self) -> Result<RouteNla> { use self::RouteNla::*; let payload = self.value(); Ok(match self.kind() { RTA_UNSPEC => Unspec(payload.to_vec()), RTA_DST => Destination(payload.to_vec()), RTA_SRC => Source(payload.to_vec()), RTA_GATEWAY => Gateway(payload.to_vec()), RTA_PREFSRC => PrefSource(payload.to_vec()), RTA_MULTIPATH => MultiPath(payload.to_vec()), RTA_SESSION => Session(payload.to_vec()), RTA_MP_ALGO => MpAlgo(payload.to_vec()), RTA_VIA => Via(payload.to_vec()), RTA_NEWDST => NewDestination(payload.to_vec()), RTA_PREF => Pref(payload.to_vec()), RTA_ENCAP => Encap(payload.to_vec()), RTA_EXPIRES => Expires(payload.to_vec()), RTA_PAD => Pad(payload.to_vec()), RTA_UID => Uid(payload.to_vec()), RTA_TTL_PROPAGATE => TtlPropagate(payload.to_vec()), RTA_ENCAP_TYPE => EncapType(parse_u16(payload)?), RTA_IIF => Iif(parse_u32(payload)?), RTA_OIF => Oif(parse_u32(payload)?), RTA_PRIORITY => Priority(parse_u32(payload)?), RTA_PROTOINFO => ProtocolInfo(parse_u32(payload)?), RTA_FLOW => Flow(parse_u32(payload)?), RTA_TABLE => Table(parse_u32(payload)?), RTA_MARK => Mark(parse_u32(payload)?), RTA_CACHEINFO => CacheInfo(RouteCacheInfo::from_bytes(payload)?), RTA_MFC_STATS => MfcStats(RouteMfcStats::from_bytes(payload)?), RTA_METRICS => Metrics(NlaBuffer::new_checked(payload)?.parse()?), _ => Other(<Self as Parseable<DefaultNla>>::parse(self)?), }) } }