etherdevice.h: Add ether_addr_equal

Add a boolean function to check if 2 ethernet addresses
are the same.

This is to avoid any confusion about compare_ether_addr
returning an unsigned, and not being able to use the
compare_ether_addr function for sorting ala memcmp.
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

include/linux/etherdevice.h

@@ -171,6 +171,18 @@ static inline unsigned compare_ether_addr(const u8 *addr1, const u8 *addr2)
 	return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2])) != 0;
 }
 
+/**
+ * ether_addr_equal - Compare two Ethernet addresses
+ * @addr1: Pointer to a six-byte array containing the Ethernet address
+ * @addr2: Pointer other six-byte array containing the Ethernet address
+ *
+ * Compare two ethernet addresses, returns true if equal
+ */
+static inline bool ether_addr_equal(const u8 *addr1, const u8 *addr2)
+{
+	return !compare_ether_addr(addr1, addr2);
+}
+
 static inline unsigned long zap_last_2bytes(unsigned long value)
 {
 #ifdef __BIG_ENDIAN