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net: create netdev->dev_addr assignment helpers

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[ Upstream commit 48eab831ae8b9f7002a533fa4235eed63ea1f1a3 ]

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: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 391af06a02e7 ("wifi: wl3501_cs: Fix an error handling path in wl3501_probe()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jakub Kicinski
2021-09-02 11:10:37 -07:00
committed by Greg Kroah-Hartman
parent 64c83fed3b
commit c368c4defa
2 changed files with 30 additions and 0 deletions
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12
include/linux/etherdevice.h
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@@ -291,6 +291,18 @@ 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