make tun dependency optional (#142)

* remove log crates
* remove udp/raw of smoltcp
* make tun as optional dependancy, compile for freebsd works

easytier/src/common/error.rs

@@ -10,8 +10,11 @@ use super::PeerId;
 pub enum Error {
     #[error("io error")]
     IOError(#[from] io::Error),
+
+    #[cfg(feature = "tun")]
     #[error("rust tun error {0}")]
     TunError(#[from] tun::Error),
+
     #[error("tunnel error {0}")]
     TunnelError(#[from] tunnel::TunnelError),
     #[error("Peer has no conn, PeerId: {0}")]

easytier/src/common/global_ctx.rs

@@ -128,7 +128,7 @@ impl GlobalCtx {
         if self.event_bus.receiver_count() != 0 {
             self.event_bus.send(event).unwrap();
         } else {
-            log::warn!("No subscriber for event: {:?}", event);
+            tracing::warn!("No subscriber for event: {:?}", event);
         }
     }
 

easytier/src/common/netns.rs

@@ -43,7 +43,7 @@ impl NetNSGuard {
         }
 
         let ns = std::fs::File::open(ns_path).unwrap();
-        log::info!(
+        tracing::info!(
             "[INIT NS] switching to new ns_name: {:?}, ns_file: {:?}",
             name,
             ns
@@ -59,7 +59,7 @@ impl Drop for NetNSGuard {
         if self.old_ns.is_none() {
             return;
         }
-        log::info!("[INIT NS] switching back to old ns, ns: {:?}", self.old_ns);
+        tracing::info!("[INIT NS] switching back to old ns, ns: {:?}", self.old_ns);
         setns(
             self.old_ns.as_ref().unwrap().as_fd(),
             CloneFlags::CLONE_NEWNET,

easytier/src/common/network.rs

@@ -51,7 +51,7 @@ impl InterfaceFilter {
     }
 }
 
-#[cfg(target_os = "macos")]
+#[cfg(any(target_os = "macos", target_os = "freebsd"))]
 impl InterfaceFilter {
     async fn is_interface_physical(interface_name: &str) -> bool {
         let output = tokio::process::Command::new("networksetup")