Import handy shorthand Bluetooth address (BD_ADDR) utility functions

from NetBSD and document them.

Obtained from:	NetBSD
MFC after:	1 week

1 files changed, 30 insertions, 0 deletions

diff --git a/lib/libbluetooth/bluetooth.h b/lib/libbluetooth/bluetooth.h
index d9797876e790..0b62466e8ccd 100644
--- a/lib/libbluetooth/bluetooth.h
+++ b/lib/libbluetooth/bluetooth.h
@@ -72,6 +72,36 @@ void              bt_endprotoent      (void);
 char const *      bt_ntoa             (bdaddr_t const *ba, char *str);
 int               bt_aton             (char const *str, bdaddr_t *ba);
 
+/*
+ * bdaddr utility functions (from NetBSD)
+ */
+
+static __inline int
+bdaddr_same(const bdaddr_t *a, const bdaddr_t *b)
+{
+	return (a->b[0] == b->b[0] && a->b[1] == b->b[1] &&
+		a->b[2] == b->b[2] && a->b[3] == b->b[3] &&
+		a->b[4] == b->b[4] && a->b[5] == b->b[5]);
+}
+
+static __inline int
+bdaddr_any(const bdaddr_t *a)
+{
+	return (a->b[0] == 0 && a->b[1] == 0 && a->b[2] == 0 &&
+		a->b[3] == 0 && a->b[4] == 0 && a->b[5] == 0);
+}
+
+static __inline void
+bdaddr_copy(bdaddr_t *d, const bdaddr_t *s)
+{
+	d->b[0] = s->b[0];
+	d->b[1] = s->b[1];
+	d->b[2] = s->b[2];
+	d->b[3] = s->b[3];
+	d->b[4] = s->b[4];
+	d->b[5] = s->b[5];
+}
+
 __END_DECLS
 
 #endif /* ndef _BLUETOOTH_H_ */