feat: worked some on the tcp client

found out ethtool helps make the program work with lxc sockets

Cargo.lock

@@ -719,12 +719,9 @@ dependencies = [
 
 [[package]]
 name = "log"
-version = "0.4.17"
+version = "0.4.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "abb12e687cfb44aa40f41fc3978ef76448f9b6038cad6aef4259d3c095a2382e"
+checksum = "b5e6163cb8c49088c2c36f57875e58ccd8c87c7427f7fbd50ea6710b2f3f2e8f"
-dependencies = [
- "cfg-if",
-]
 
 [[package]]
 name = "managed"
@@ -1219,11 +1216,10 @@ checksum = "74233d3b3b2f6d4b006dc19dee745e73e2a6bfb6f93607cd3b02bd5b00797d7c"
 
 [[package]]
 name = "simple_logger"
-version = "4.1.0"
+version = "4.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e78beb34673091ccf96a8816fce8bfd30d1292c7621ca2bcb5f2ba0fae4f558d"
+checksum = "2230cd5c29b815c9b699fb610b49a5ed65588f3509d9f0108be3a885da629333"
 dependencies = [
- "atty",
  "colored",
  "log",
  "time",
@@ -1419,10 +1415,12 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "libc",
+ "log",
  "nl-sys",
  "packets",
  "pcap-sys",
  "rand 0.8.5",
+ "simple_logger",
  "smoltcp",
  "tokio",
  "tokio-stream",

tcp-test/client/Cargo.toml

@@ -13,5 +13,7 @@ rand = "0.8.5"
 tokio = { version = "1.32.0", features = ["full"] }
 anyhow = "1.0.75"
 tokio-stream = { version = "0.1.14", features = ["full"] }
-smoltcp = { version = "0.10.0", features = ["socket-tcp", "phy-raw_socket", "std", "async", "medium-ethernet", "proto-ipv4", "reassembly-buffer-size-65536", "fragmentation-buffer-size-65536", "proto-ipv4-fragmentation"] }
+smoltcp = { version = "0.10", features = ["socket-tcp", "phy-raw_socket", "std", "async", "medium-ethernet", "proto-ipv4", "reassembly-buffer-size-65536", "fragmentation-buffer-size-65536", "proto-ipv4-fragmentation", "log", "verbose"] }
 libc = "0.2.148"
+log = "0.4.20"
+simple_logger = "4.2.0"

tcp-test/client/src/main.rs

@@ -2,11 +2,12 @@ use std::{net::Ipv4Addr, os::fd::AsRawFd, sync::Arc};
 
 use anyhow::anyhow;
 
+use log::{debug, info, trace};
 use nl_sys::{netlink, route};
 
 use smoltcp::{
     iface::{Config, Interface, Route, SocketSet},
-    phy::{wait as phy_wait, Medium, RawSocket},
+    phy::{wait as phy_wait, Device, Medium, RawSocket},
     socket::tcp,
     time::Instant,
     wire::{EthernetAddress, IpAddress, IpCidr, Ipv4Address},
@@ -15,6 +16,11 @@ use tokio::io::{unix::AsyncFd, Interest};
 
 #[tokio::main]
 async fn main() -> anyhow::Result<()> {
+    simple_logger::SimpleLogger::new()
+        .with_level(log::LevelFilter::Trace)
+        .with_module_level("tcp_test", log::LevelFilter::Trace)
+        .init()?;
+
     let ip = std::env::args()
         .skip(1)
         .next()
@@ -45,6 +51,11 @@ async fn main() -> anyhow::Result<()> {
     let mut iface = Interface::new(config, &mut device, Instant::now());
     iface.update_ip_addrs(|ip_addrs| {
         let o = srcip.octets();
+        debug!(
+            "source network ip: {}.{}.{}.{}/{src_snmask}",
+            o[0], o[1], o[2], o[3]
+        );
+
         ip_addrs
             .push(IpCidr::new(
                 IpAddress::v4(o[0], o[1], o[2], o[3]),
@@ -55,21 +66,49 @@ async fn main() -> anyhow::Result<()> {
 
     for route in routes.iter() {
         let Some(dst) = route.dst() else {
+            trace!("failed to get route destination");
             continue;
         };
 
         let Some(hop) = route.hop_iter().next() else {
+            trace!("no next hop existed for {dst:?}");
             continue;
         };
         if hop.ifindex() != ifindex {
+            trace!("hop doesn't match ifindex {ifindex}");
             continue;
         }
         let Some(laddr) = hop.gateway() else {
+            trace!("couldn't get gateway address for {dst:?}");
             continue;
         };
         if laddr.atype() != Some(libc::AF_INET) {
+            trace!("unable to load IP info for {dst:?}");
             continue;
         }
+
+        if dst.cidrlen() == 0 {
+            info!("setting default route via {:?}", &laddr);
+            iface
+                .routes_mut()
+                .add_default_ipv4_route(Ipv4Address::from_bytes(&laddr.hw_address()))?;
+
+            iface.routes_mut().update(|routes| {
+                let lip = laddr.hw_address();
+                _ = routes.push(Route {
+                    cidr: IpCidr::new(IpAddress::v4(10, 0, 0, 0), 8),
+                    via_router: IpAddress::v4(lip[0], lip[1], lip[2], lip[3]),
+                    expires_at: None,
+                    preferred_until: None,
+                });
+                _ = routes.push(Route {
+                    cidr: IpCidr::new(IpAddress::v4(172, 16, 0, 0), 12),
+                    via_router: IpAddress::v4(lip[0], lip[1], lip[2], lip[3]),
+                    expires_at: None,
+                    preferred_until: None,
+                });
+            });
+        } else {
             let Some(raddr) = route.dst() else {
                 continue;
             };
@@ -77,15 +116,36 @@ async fn main() -> anyhow::Result<()> {
                 continue;
             }
 
-        if dst.cidrlen() == 0 {
-            iface
-                .routes_mut()
-                .add_default_ipv4_route(Ipv4Address::from_bytes(&laddr.hw_address()))?;
-        } else {
-            iface.routes_mut().update(|routes| {
             let lip = laddr.hw_address();
             let rip = raddr.hw_address();
 
+            info!(
+                "queueing adding {}.{}.{}.{}/{} via {}.{}.{}.{}",
+                rip[0],
+                rip[1],
+                rip[2],
+                rip[3],
+                dst.cidrlen(),
+                lip[0],
+                lip[1],
+                lip[2],
+                lip[3]
+            );
+
+            iface.routes_mut().update(|routes| {
+                info!(
+                    "adding {}.{}.{}.{}/{} via {}.{}.{}.{}",
+                    rip[0],
+                    rip[1],
+                    rip[2],
+                    rip[3],
+                    dst.cidrlen(),
+                    lip[0],
+                    lip[1],
+                    lip[2],
+                    lip[3]
+                );
+
                 _ = routes.push(Route {
                     cidr: IpCidr::new(
                         IpAddress::v4(rip[0], rip[1], rip[2], rip[3]),
@@ -99,8 +159,15 @@ async fn main() -> anyhow::Result<()> {
         }
     }
 
-    let tcp_rx_buffer = tcp::SocketBuffer::new(vec![0; 1500]);
+    debug!("routes added:");
-    let tcp_tx_buffer = tcp::SocketBuffer::new(vec![0; 1500]);
+    iface.routes_mut().update(|r| {
+        for r in r {
+            debug!("\t{r:?}");
+        }
+    });
+
+    let tcp_rx_buffer = tcp::SocketBuffer::new(vec![0; 65536]);
+    let tcp_tx_buffer = tcp::SocketBuffer::new(vec![0; 65536]);
     let tcp_socket = tcp::Socket::new(tcp_rx_buffer, tcp_tx_buffer);
     let mut sockets = SocketSet::new(vec![]);
     let tcp_handle = sockets.add(tcp_socket);
@@ -117,15 +184,13 @@ async fn main() -> anyhow::Result<()> {
     socket.connect(iface.context(), (ip, 54248), port)?;
 
     let fd = device.as_raw_fd();
-    let interest = Interest::WRITABLE
+    /*let interest = Interest::WRITABLE
         .add(Interest::READABLE)
         .add(Interest::ERROR)
         .add(Interest::PRIORITY);
-    let afd = AsyncFd::with_interest(fd, interest)?;
+    let afd = AsyncFd::with_interest(fd, interest)?;*/
 
     let mut tcp_active = false;
-    let mut tcp_data_sent = false;
-    let mut tcp_data_recvd = false;
 
     loop {
         let timestamp = Instant::now();
@@ -133,32 +198,36 @@ async fn main() -> anyhow::Result<()> {
 
         let socket = sockets.get_mut::<tcp::Socket>(tcp_handle);
         if socket.is_active() && !tcp_active {
-            println!("connected!");
+            info!("connected!");
+            tcp_active = true;
         } else if !socket.is_active() && tcp_active {
-            println!("disconnected");
+            info!("disconnected");
-            break Ok(());
+            tcp_active = false;
         }
         tcp_active = socket.is_active();
 
-        if !tcp_data_sent && socket.can_send() {
+        if !socket.is_active() && !tcp_active {
-            socket.send_slice(b"ping")?;
+            socket.connect(iface.context(), (ip, 54248), port)?;
-            tcp_data_sent = true;
+            info!("connecting...");
         }
-        if !tcp_data_recvd && socket.may_recv() {
+
+        if socket.can_send() {
+            socket.send_slice(b"ping")?;
+            info!("sent data!");
+        } else if socket.may_recv() {
             socket.recv(|data| {
                 if !data.is_empty() {
                     match std::str::from_utf8(&data) {
-                        Ok(s) => println!("Data received: {}", s),
+                        Ok(s) => info!("Data received: {}", s),
-                        Err(_) => println!("Data received: {:?}", data),
+                        Err(_) => info!("Data received: {:?}", data),
                     }
                 }
                 (data.len(), data)
             })?;
-            tcp_data_recvd = true;
         }
 
-        // phy_wait(fd, iface.poll_delay(timestamp, &sockets))?;
+        phy_wait(fd, iface.poll_delay(timestamp, &sockets))?;
 
-        drop(afd.ready(interest).await?);
+        // drop(afd.ready(interest).await?);
     }
 }