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authorBjørn Mork <bjorn@mork.no>2013-08-30 18:08:44 +0200
committerDavid S. Miller <davem@davemloft.net>2013-09-03 20:57:49 -0400
commit83a093b486ecfd25e7b04b82f6a388f24bd274b2 (patch)
tree599cfa0d7929e8e152bb4d2f5a5d64c74b87db3b /include/linux/etherdevice.h
parent5a17a390de7bdbcfff9b8f344273a886ca4cf8bf (diff)
net: etherdevice: add address inherit helper
Some etherdevices inherit their address from a parent or master device. The addr_assign_type should be updated along with the address in these cases. Adding a helper function to simplify this. Signed-off-by: Bjørn Mork <bjorn@mork.no> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/etherdevice.h')
-rw-r--r--include/linux/etherdevice.h15
1 files changed, 15 insertions, 0 deletions
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index c623861964e4..d8b512496e50 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -199,6 +199,21 @@ static inline void eth_hw_addr_random(struct net_device *dev)
}
/**
+ * eth_hw_addr_inherit - Copy dev_addr from another net_device
+ * @dst: pointer to net_device to copy dev_addr to
+ * @src: pointer to net_device to copy dev_addr from
+ *
+ * Copy the Ethernet address from one net_device to another along with
+ * the address attributes (addr_assign_type).
+ */
+static inline void eth_hw_addr_inherit(struct net_device *dst,
+ struct net_device *src)
+{
+ dst->addr_assign_type = src->addr_assign_type;
+ memcpy(dst->dev_addr, src->dev_addr, ETH_ALEN);
+}
+
+/**
* 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