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ipv6: stub out even more of addrconf_set_dstaddr if SIT is disabled

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There is no point in copying the structure from userspace or looking up
a device if SIT support is not disabled and we'll eventually return
-ENODEV anyway.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Christoph Hellwig 2020-05-19 15:03:17 +02:00 committed by David S. Miller
parent f60fe2df93
commit f098846044
1 changed files with 3 additions and 2 deletions
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5
net/ipv6/addrconf.c
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@ -2794,6 +2794,9 @@ int addrconf_set_dstaddr(struct net *net, void __user *arg)
struct net_device *dev;
int err = -EINVAL;
if (!IS_ENABLED(CONFIG_IPV6_SIT))
return -ENODEV;
rtnl_lock();
err = -EFAULT;
@ -2806,7 +2809,6 @@ int addrconf_set_dstaddr(struct net *net, void __user *arg)
if (!dev)
goto err_exit;
#if IS_ENABLED(CONFIG_IPV6_SIT)
if (dev->type == ARPHRD_SIT) {
const struct net_device_ops *ops = dev->netdev_ops;
struct ifreq ifr;
@ -2842,7 +2844,6 @@ int addrconf_set_dstaddr(struct net *net, void __user *arg)
err = dev_open(dev, NULL);
}
}
#endif
err_exit:
rtnl_unlock();