Bluetooth: Add helper functions for testing bdaddr types

This patch adds two helper functions to test for valid bdaddr type
values. These will be particularely useful in the mgmt code to check
that user space has passed valid values to the kernel.
Signed-off-by: NJohan Hedberg <johan.hedberg@intel.com>
Acked-by: NMarcel Holtmann <marcel@holtmann.org>
Signed-off-by: NGustavo Padovan <gustavo.padovan@collabora.co.uk>

include/net/bluetooth/bluetooth.h

@@ -166,6 +166,29 @@ typedef struct {
 #define BDADDR_LE_PUBLIC	0x01
 #define BDADDR_LE_RANDOM	0x02
 
+static inline bool bdaddr_type_is_valid(__u8 type)
+{
+	switch (type) {
+	case BDADDR_BREDR:
+	case BDADDR_LE_PUBLIC:
+	case BDADDR_LE_RANDOM:
+		return true;
+	}
+
+	return false;
+}
+
+static inline bool bdaddr_type_is_le(__u8 type)
+{
+	switch (type) {
+	case BDADDR_LE_PUBLIC:
+	case BDADDR_LE_RANDOM:
+		return true;
+	}
+
+	return false;
+}
+
 #define BDADDR_ANY   (&(bdaddr_t) {{0, 0, 0, 0, 0, 0} })
 #define BDADDR_LOCAL (&(bdaddr_t) {{0, 0, 0, 0xff, 0xff, 0xff} })