batman-adv: separate ethernet comparing calls from hash functions

Note: The function compare_ether_addr() provided by the Linux kernel
requires aligned memory.

Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/net/batman-adv/main.h b/net/batman-adv/main.h
index e235d7bbe04..06b5b994cc2 100644
--- a/net/batman-adv/main.h
+++ b/net/batman-adv/main.h
@@ -165,4 +165,14 @@ static inline void bat_dbg(char type __always_unused,
 		pr_err("%s: " fmt, _netdev->name, ## arg);		\
 	} while (0)
 
+/**
+ * returns 1 if they are the same ethernet addr
+ *
+ * note: can't use compare_ether_addr() as it requires aligned memory
+ */
+static inline int compare_eth(void *data1, void *data2)
+{
+	return (memcmp(data1, data2, ETH_ALEN) == 0 ? 1 : 0);
+}
+
 #endif /* _NET_BATMAN_ADV_MAIN_H_ */