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-rw-r--r--include/linux/etherdevice.h16
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index 4522c7186bf3..cc84934f9059 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -104,6 +104,22 @@ static inline void random_ether_addr(u8 *addr)
addr [0] &= 0xfe; /* clear multicast bit */
addr [0] |= 0x02; /* set local assignment bit (IEEE802) */
}
+
+/**
+ * compare_ether_addr - 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 0 if equal
+ */
+static inline unsigned compare_ether_addr(const u8 *_a, const u8 *_b)
+{
+ const u16 *a = (const u16 *) _a;
+ const u16 *b = (const u16 *) _b;
+
+ BUILD_BUG_ON(ETH_ALEN != 6);
+ return ((a[0] ^ b[0]) | (a[1] ^ b[1]) | (a[2] ^ b[2])) != 0;
+}
#endif /* __KERNEL__ */
#endif /* _LINUX_ETHERDEVICE_H */