diff --git a/include/hci.h b/include/hci.h
index 6e295be..499f1bd 100644
--- a/include/hci.h
+++ b/include/hci.h
@@ -83,6 +83,7 @@
 #define HCIGETDEVINFO	_IOR('H', 211, int)
 #define HCIGETCONNLIST	_IOR('H', 212, int)
 #define HCIGETCONNINFO	_IOR('H', 213, int)
+#define HCIGETAUTHINFO	_IOR('H', 215, int)
 
 #define HCISETRAW	_IOW('H', 220, int)
 #define HCISETSCAN	_IOW('H', 221, int)
@@ -1813,6 +1814,11 @@
 	struct hci_conn_info conn_info[0];
 };
 
+struct hci_auth_info_req {
+	bdaddr_t bdaddr;
+	uint8_t  type;
+};
+
 struct hci_inquiry_req {
 	uint16_t dev_id;
 	uint16_t flags;