[PATCH V9 net-next 11/11] net: add ndo_validate_addr check in dev_set_mac_address

[Jijie Shao]

If driver implements ndo_validate_addr,
core should check the mac address before ndo_set_mac_address.

Signed-off-by: Jijie Shao <shaojijie@xxxxxxxxxx>
Reviewed-by: Andrew Lunn <andrew@xxxxxxx>
---
ChangeLog:
v2 -> v3:
  - Use ndo_validate_addr() instead of is_valid_ether_addr()
    in dev_set_mac_address(), suggested by Jakub and Andrew.
  v2: https://lore.kernel.org/all/20240820140154.137876-1-shaojijie@xxxxxxxxxx/
---
 net/core/dev.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/net/core/dev.c b/net/core/dev.c
index 22c3f14d9287..00e0f473ed44 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -9087,6 +9087,11 @@ int dev_set_mac_address(struct net_device *dev, struct sockaddr *sa,
 		return -EOPNOTSUPP;
 	if (sa->sa_family != dev->type)
 		return -EINVAL;
+	if (ops->ndo_validate_addr) {
+		err = ops->ndo_validate_addr(dev);
+		if (err)
+			return err;
+	}
 	if (!netif_device_present(dev))
 		return -ENODEV;
 	err = dev_pre_changeaddr_notify(dev, sa->sa_data, extack);
-- 
2.33.0