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@@ -850,8 +850,8 @@ impl<'b, 'c, 'e> InterfaceInner<'b, 'c, 'e> {
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match raw_socket.process(&ip_repr, ip_payload, &checksum_caps) {
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// The packet is valid and handled by socket.
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Ok(()) => handled_by_raw_socket = true,
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- // The socket buffer is full.
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- Err(Error::Exhausted) => (),
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+ // The socket buffer is full or the packet was truncated
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+ Err(Error::Exhausted) | Err(Error::Truncated) => (),
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// Raw sockets don't validate the packets in any way.
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Err(_) => unreachable!(),
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}
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@@ -2667,6 +2667,67 @@ mod test {
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Ok(Packet::None));
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}
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+ #[test]
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+ #[cfg(all(feature = "proto-ipv4", feature = "socket-raw"))]
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+ fn test_raw_socket_truncated_packet() {
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+ use socket::{RawSocket, RawSocketBuffer, RawPacketMetadata};
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+ use wire::{IpVersion, Ipv4Packet, UdpPacket, UdpRepr};
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+
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+ let (mut iface, mut socket_set) = create_loopback();
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+
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+ let packets = 1;
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+ let rx_buffer = RawSocketBuffer::new(vec![RawPacketMetadata::EMPTY; packets], vec![0; 48 * 1]);
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+ let tx_buffer = RawSocketBuffer::new(vec![RawPacketMetadata::EMPTY; packets], vec![0; 48 * packets]);
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+ let raw_socket = RawSocket::new(IpVersion::Ipv4, IpProtocol::Udp, rx_buffer, tx_buffer);
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+ socket_set.add(raw_socket);
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+
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+ let src_addr = Ipv4Address([127, 0, 0, 2]);
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+ let dst_addr = Ipv4Address([127, 0, 0, 1]);
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+
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+ let udp_repr = UdpRepr {
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+ src_port: 67,
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+ dst_port: 68,
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+ payload: &[0x2a; 49] // 49 > 48, hence packet will be truncated
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+ };
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+ let mut bytes = vec![0xff; udp_repr.buffer_len()];
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+ let mut packet = UdpPacket::new_unchecked(&mut bytes[..]);
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+ udp_repr.emit(&mut packet, &src_addr.into(), &dst_addr.into(), &ChecksumCapabilities::default());
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+ let ipv4_repr = Ipv4Repr {
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+ src_addr: src_addr,
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+ dst_addr: dst_addr,
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+ protocol: IpProtocol::Udp,
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+ hop_limit: 64,
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+ payload_len: udp_repr.buffer_len()
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+ };
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+
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+ // Emit to ethernet frame
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+ let mut eth_bytes = vec![0u8;
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+ EthernetFrame::<&[u8]>::header_len() +
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+ ipv4_repr.buffer_len() + udp_repr.buffer_len()
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+ ];
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+ let frame = {
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+ let mut frame = EthernetFrame::new_unchecked(&mut eth_bytes);
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+ ipv4_repr.emit(
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+ &mut Ipv4Packet::new_unchecked(frame.payload_mut()),
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+ &ChecksumCapabilities::default());
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+ udp_repr.emit(
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+ &mut UdpPacket::new_unchecked(
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+ &mut frame.payload_mut()[ipv4_repr.buffer_len()..]),
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+ &src_addr.into(),
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+ &dst_addr.into(),
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+ &ChecksumCapabilities::default());
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+ EthernetFrame::new_unchecked(&*frame.into_inner())
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+ };
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+
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+ let frame = iface.inner.process_ipv4(&mut socket_set, Instant::from_millis(0), &frame);
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+
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+ // because the packet could not be handled we should send an Icmp message
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+ assert!(match frame {
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+ Ok(Packet::Icmpv4(_)) => true,
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+ _ => false,
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+ });
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+ }
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+
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#[test]
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#[cfg(all(feature = "proto-ipv4", feature = "socket-raw", feature = "socket-udp"))]
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fn test_raw_socket_with_udp_socket() {
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