1 // Copyright 2021 Ian Jackson and contributors to Hippotat
2 // SPDX-License-Identifier: GPL-3.0-or-later
3 // There is NO WARRANTY.
7 #[allow(dead_code)] // xxx
8 #[allow(unused_variables)] // xxx
9 pub async fn run(global: Arc<Global>,
10 mut rx: mpsc::Receiver<RoutedPacket>,
11 mut ipif: Ipif) -> Result<Void,AE> {
13 let mut goodness: i32 = 0;
14 const GOODNESS_SHIFT: u8 = 8;
15 const GOODNESS_MIN: i32 = -16;
23 let data = data.ok_or_else(|| anyhow!("rx stream end!"))?;
24 let mut data = &*data.data;
25 let mut slip_end = &[SLIP_END][..];
26 let mut buf = Buf::chain(&mut data, &mut slip_end);
27 ipif.rx.write_all_buf(&mut buf).await
28 .context("write to ipif")?;
31 data = Ipif::next_frame(&mut ipif.tx) =>
34 let may_route = MayRoute::came_from_outside_hippotatd();
36 goodness -= goodness >> GOODNESS_SHIFT;
38 match checkn(SlipNoConv, global.config.mtu, &data, |header|{
39 let saddr = ip_packet_addr::<false>(header)?;
40 let daddr = ip_packet_addr::<true>(header)?;
42 }, |(data, (saddr, daddr))| {
44 let may_route = &may_route;
46 if ! global.config.vnetwork.iter().any(|n| n.contains(&saddr)) {
47 // pretent as if this came from route
50 "discard to={:?} came=ipif user=local from-outside-vnets-={:?}",
56 &global, "ipif", None,
57 data, daddr, may_route.clone()
64 other => throw!(other),
66 Ok(()) => goodness += 1,
69 error!("[good={}] invalid data from local tx ipif {}",
71 if goodness < GOODNESS_MIN {
72 throw!(anyhow!("too many bad packets, too few good ones!"))
81 ipif.quitting(None).await;