[PATCH 6/14][RTNL]: Introduce the rtnl_kill_links call.

[Patrick McHardy]

Pavel Emelyanov wrote:
>>>  	for_each_net(net) {
>>> -restart:
>>> -		for_each_netdev_safe(net, dev, n) {
>>> -			if (dev->rtnl_link_ops == ops) {
>>> -				ops->dellink(dev);
>>> -				goto restart;
>>> -			}
>>> -		}
>>> +		__rtnl_kill_links(net, ops);
>> This was _safe, and now it's not. Is that intentional?
> 
> Yup - we goto restart in case we del some link, so there's no need
> in _safe iteration. 
> 
> This goto was added by Partick (commit 68365458 [NET]: rtnl_link: 
> fix use-after-free) and I suspect he simply forgot to remove the 
> _safe iterator (I put him in Cc to correct me if I'm wrong).


No, that was an oversight, it should be safe to remove.