etherdevice: introduce eth_broadcast_addr
A lot of code has either the memset or an inefficient copy
from a static array that contains the all-ones broadcast
address. Introduce eth_broadcast_addr() to fill an address
with all ones, making the code clearer and allowing us to
get rid of some constant arrays.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index 3d406e0..98a27cc 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -138,6 +138,17 @@
}
/**
+ * eth_broadcast_addr - Assign broadcast address
+ * @addr: Pointer to a six-byte array containing the Ethernet address
+ *
+ * Assign the broadcast address to the given address array.
+ */
+static inline void eth_broadcast_addr(u8 *addr)
+{
+ memset(addr, 0xff, ETH_ALEN);
+}
+
+/**
* eth_hw_addr_random - Generate software assigned random Ethernet and
* set device flag
* @dev: pointer to net_device structure