Add definition for the SECURE link mode
diff --git a/include/hci.h b/include/hci.h
index e7f0459..5e874e0 100644
--- a/include/hci.h
+++ b/include/hci.h
@@ -267,6 +267,7 @@
#define HCI_LM_ENCRYPT 0x0004
#define HCI_LM_TRUSTED 0x0008
#define HCI_LM_RELIABLE 0x0010
+#define HCI_LM_SECURE 0x0020
/* ----- HCI Commands ----- */
diff --git a/include/l2cap.h b/include/l2cap.h
index e76f902..025d0f6 100644
--- a/include/l2cap.h
+++ b/include/l2cap.h
@@ -67,6 +67,7 @@
#define L2CAP_LM_ENCRYPT 0x0004
#define L2CAP_LM_TRUSTED 0x0008
#define L2CAP_LM_RELIABLE 0x0010
+#define L2CAP_LM_SECURE 0x0020
#define L2CAP_QOS 0x04
struct l2cap_qos {
diff --git a/include/rfcomm.h b/include/rfcomm.h
index 8cb8ac4..02775d5 100644
--- a/include/rfcomm.h
+++ b/include/rfcomm.h
@@ -56,6 +56,7 @@
#define RFCOMM_LM_ENCRYPT 0x0004
#define RFCOMM_LM_TRUSTED 0x0008
#define RFCOMM_LM_RELIABLE 0x0010
+#define RFCOMM_LM_SECURE 0x0020
/* RFCOMM TTY support */
#define RFCOMM_MAX_DEV 256
