krata: restructure packages for cleanliness

crates/network/src/nat/key.rs

@@ -0,0 +1,29 @@
+use std::fmt::Display;
+
+use smoltcp::wire::{EthernetAddress, IpEndpoint};
+
+#[derive(Debug, Copy, Clone, Eq, PartialEq, PartialOrd, Ord, Hash)]
+pub enum NatKeyProtocol {
+    Tcp,
+    Udp,
+    Icmp,
+}
+
+#[derive(Debug, Copy, Clone, Eq, PartialEq, PartialOrd, Ord, Hash)]
+pub struct NatKey {
+    pub protocol: NatKeyProtocol,
+    pub client_mac: EthernetAddress,
+    pub local_mac: EthernetAddress,
+    pub client_ip: IpEndpoint,
+    pub external_ip: IpEndpoint,
+}
+
+impl Display for NatKey {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(
+            f,
+            "{} -> {} {:?} {} -> {}",
+            self.client_mac, self.local_mac, self.protocol, self.client_ip, self.external_ip
+        )
+    }
+}