diff --git a/src/runtime/batches.rs b/src/runtime/batches.rs
new file mode 100644
index 0000000000000000000000000000000000000000..4dabc257a3f3c51a6e407d24a37b8454d5acf749
--- /dev/null
+++ b/src/runtime/batches.rs
@@ -0,0 +1,19 @@
+use std::ptr::NonNull;
+
+#[repr(C)]
+pub struct PortOp {
+	port: u32,
+	buf_len: u32,
+	buf: Option<NonNull<u8>>,
+}
+
+
+#[no_mangle]
+pub extern "C" fn do_sync(
+	_ops_ptr: Option<NonNull<PortOp>>,
+	_ops_len: usize,
+	_batch_ptr: Option<NonNull<u32>>,
+	_batch_len: usize)
+{
+	// TODO
+}
\ No newline at end of file