[RTNETLINK]: rtnl_link: allow specifying initial device address
Drivers need to validate the initial addresses in their netlink attribute
validation function or manually reject them if they can't support this.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/8021q/vlan.c b/net/8021q/vlan.c
index 34c1d0b..abb9900 100644
--- a/net/8021q/vlan.c
+++ b/net/8021q/vlan.c
@@ -324,8 +324,10 @@
(1<<__LINK_STATE_DORMANT))) |
(1<<__LINK_STATE_PRESENT);
- memcpy(dev->broadcast, real_dev->broadcast, real_dev->addr_len);
- memcpy(dev->dev_addr, real_dev->dev_addr, real_dev->addr_len);
+ if (is_zero_ether_addr(dev->dev_addr))
+ memcpy(dev->dev_addr, real_dev->dev_addr, dev->addr_len);
+ if (is_zero_ether_addr(dev->broadcast))
+ memcpy(dev->broadcast, real_dev->broadcast, dev->addr_len);
if (real_dev->features & NETIF_F_HW_VLAN_TX) {
dev->hard_header = real_dev->hard_header;
@@ -373,6 +375,8 @@
new_dev->set_multicast_list = vlan_dev_set_multicast_list;
new_dev->destructor = free_netdev;
new_dev->do_ioctl = vlan_dev_ioctl;
+
+ memset(new_dev->broadcast, 0, sizeof(ETH_ALEN));
}
static void vlan_transfer_operstate(const struct net_device *dev, struct net_device *vlandev)