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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 13cf0e3894
commit cbd44a9e1c
2 changed files with 30 additions and 0 deletions
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18
include/linux/netdevice.h
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@@ -4474,6 +4474,24 @@ 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,