This is a note to let you know that I've just added the patch titled
net: create netdev->dev_addr assignment helpers
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-create-netdev-dev_addr-assignment-helpers.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e30a64ceb7b11cf6fcd324236f5de49d836f811d
Author: Jakub Kicinski <kuba@xxxxxxxxxx>
Date: Thu Sep 2 11:10:37 2021 -0700
net: create netdev->dev_addr assignment helpers
[ 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@xxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Stable-dep-of: 391af06a02e7 ("wifi: wl3501_cs: Fix an error handling path in wl3501_probe()")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index e1e9eff096d05..2932a40060c1d 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -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
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 90827d85265b0..7e9df3854420a 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -4079,6 +4079,24 @@ 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,
