[IPV4/IPV6]: Fail registration if inet device construction fails
Now that netdev notifications can fail, we can use this to signal
errors during registration for IPv4/IPv6. In particular, if we
fail to allocate memory for the inet device, we can fail the netdev
registration.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 0601292..91ef3be 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2256,14 +2256,14 @@
struct net_device *dev = (struct net_device *) data;
struct inet6_dev *idev = __in6_dev_get(dev);
int run_pending = 0;
+ int err;
switch(event) {
case NETDEV_REGISTER:
if (!idev && dev->mtu >= IPV6_MIN_MTU) {
idev = ipv6_add_dev(dev);
if (!idev)
- printk(KERN_WARNING "IPv6: add_dev failed for %s\n",
- dev->name);
+ return notifier_from_errno(-ENOMEM);
}
break;
case NETDEV_UP:
@@ -2373,7 +2373,9 @@
NULL);
addrconf_sysctl_register(idev, &idev->cnf);
#endif
- snmp6_register_dev(idev);
+ err = snmp6_register_dev(idev);
+ if (err)
+ return notifier_from_errno(err);
}
break;
}