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Commit 83a093b4 authored by Bjørn Mork's avatar Bjørn Mork Committed by David S. Miller
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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: default avatarBjørn Mork <bjorn@mork.no>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5a17a390

include/linux/etherdevice.h

+15 −0
Original line number Diff line number Diff line
@@ -198,6 +198,21 @@ static inline void eth_hw_addr_random(struct net_device *dev) 
	eth_random_addr(dev->dev_addr);

}



/**

 * 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