fix(net): deallocate network buffers

Signed-off-by: Martin Kröning <[email protected]>

src/executor/network.rs

@@ -215,6 +215,11 @@ impl<'a> NetworkInterface<'a> {
 	) -> (&mut T, &mut smoltcp::iface::Context) {
 		(self.sockets.get_mut(handle), self.iface.context())
 	}
+
+	pub(crate) fn destroy_socket(&mut self, handle: Handle) {
+		// This deallocates the socket's buffers
+		self.sockets.remove(handle);
+	}
 }
 
 #[inline]

src/fd/socket/tcp.rs

@@ -425,6 +425,7 @@ impl<T> Clone for Socket<T> {
 impl<T> Drop for Socket<T> {
 	fn drop(&mut self) {
 		let _ = block_on(self.async_close(), None);
+		NIC.lock().as_nic_mut().unwrap().destroy_socket(self.handle);
 	}
 }