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[RTNETLINK]: rtnl_link: allow specifying initial device address

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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 <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Patrick McHardy 2007-07-11 19:42:31 -07:00 • committed by David S. Miller
commit 0e06877c6f
5 changed files with 44 additions and 4 deletions
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8
net/8021q/vlan.c
View file

@ -324,8 +324,10 @@ static int vlan_dev_init(struct net_device *dev)
(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 @@ void vlan_setup(struct net_device *new_dev)
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)

7
net/8021q/vlan_netlink.c
View file

@ -41,6 +41,13 @@ static int vlan_validate(struct nlattr *tb[], struct nlattr *data[])
u16 id;
int err;
if (tb[IFLA_ADDRESS]) {
if (nla_len(tb[IFLA_ADDRESS]) != ETH_ALEN)
return -EINVAL;
if (!is_valid_ether_addr(nla_data(tb[IFLA_ADDRESS])))
return -EADDRNOTAVAIL;
}
if (!data)
return -EINVAL;