Commit 48eab831 authored by Jakub Kicinski's avatar Jakub Kicinski Committed by David S. Miller
Browse files

net: create netdev->dev_addr assignment helpers 



Recent work on converting address list to a tree made it obvious
we need an abstraction around writing netdev->dev_addr. Without
such abstraction updating the main device address is invisible
to the core.

Introduce a number of helpers which for now just wrap memcpy()
but in the future can make necessary changes to the address
tree.

Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8c9bc823

include/linux/etherdevice.h

+12 −0
Original line number Diff line number Diff line
@@ -299,6 +299,18 @@ static inline void ether_addr_copy(u8 *dst, const u8 *src) 
#endif

}



/**

 * eth_hw_addr_set - Assign Ethernet address to a net_device

 * @dev: pointer to net_device structure

 * @addr: address to assign

 *

 * Assign given address to the net_device, addr_assign_type is not changed.

 */

static inline void eth_hw_addr_set(struct net_device *dev, const u8 *addr)

{

	ether_addr_copy(dev->dev_addr, addr);

}



/**

 * eth_hw_addr_inherit - Copy dev_addr from another net_device

 * @dst: pointer to net_device to copy dev_addr to

include/linux/netdevice.h

+18 −0
Original line number Diff line number Diff line
@@ -4641,6 +4641,24 @@ void __hw_addr_unsync_dev(struct netdev_hw_addr_list *list, 
void __hw_addr_init(struct netdev_hw_addr_list *list);



/* Functions used for device addresses handling */

static inline void

__dev_addr_set(struct net_device *dev, const u8 *addr, size_t len)

{

	memcpy(dev->dev_addr, addr, len);

}



static inline void dev_addr_set(struct net_device *dev, const u8 *addr)

{

	__dev_addr_set(dev, addr, dev->addr_len);

}



static inline void

dev_addr_mod(struct net_device *dev, unsigned int offset,

	     const u8 *addr, size_t len)

{

	memcpy(&dev->dev_addr[offset], addr, len);

}



int dev_addr_add(struct net_device *dev, const unsigned char *addr,

		 unsigned char addr_type);

int dev_addr_del(struct net_device *dev, const unsigned char *addr,