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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 <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2007-07-11 19:42:31 -07:00
committed by David S. Miller
parent 2d85cba2b2
commit 0e06877c6f
5 changed files with 44 additions and 4 deletions
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12
drivers/net/dummy.c
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@@ -84,9 +84,21 @@ static int dummy_xmit(struct sk_buff *skb, struct net_device *dev)
return 0;
}
static int dummy_validate(struct nlattr *tb[], struct nlattr *data[])
{
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;
}
return 0;
}
static struct rtnl_link_ops dummy_link_ops __read_mostly = {
.kind = "dummy",
.setup = dummy_setup,
.validate = dummy_validate,
};
/* Number of dummy devices to be set up by this module. */