diff --git a/libc/kernel/uapi/linux/pcitest.h b/libc/kernel/uapi/linux/pcitest.h
index c6112d0..98248bd 100644
--- a/libc/kernel/uapi/linux/pcitest.h
+++ b/libc/kernel/uapi/linux/pcitest.h
@@ -27,4 +27,10 @@
 #define PCITEST_MSIX _IOW('P', 0x7, int)
 #define PCITEST_SET_IRQTYPE _IOW('P', 0x8, int)
 #define PCITEST_GET_IRQTYPE _IO('P', 0x9)
+#define PCITEST_CLEAR_IRQ _IO('P', 0x10)
+#define PCITEST_FLAGS_USE_DMA 0x00000001
+struct pci_endpoint_test_xfer_param {
+  unsigned long size;
+  unsigned char flags;
+};
 #endif