[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/drivers/net/dummy.c b/drivers/net/dummy.c
index 373ff70..756a6bc 100644
--- a/drivers/net/dummy.c
+++ b/drivers/net/dummy.c
@@ -84,9 +84,21 @@
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. */