Re: [PATCH 4/7 parse attributes with nfattr_parse in nfnetlink_check_attribute

[Pablo Neira Ayuso <pablo@netfilter.org>]

Thomas Graf wrote:
> * Patrick McHardy <kaber@trash.net> 2007-02-13 12:05
>> Pablo Neira Ayuso wrote:
>> Currently other netlink subsystems return errors for the first level
>> of attributes and accept unknown attributes on deeper levels. I'm
>> not sure which I prefer, ignoring unknown attributes makes it
>> impossible for userspace to know that something isn't going to have
>> any effect, returning an error makes it harder to support new features.
>>
>> I know Thomas had intentions of increasing consistency in this area,
>> I'm just not sure in which direction :)
>>
>> Thomas, what do you think of this patch?
> 
> I believe that all unknown attributes should be ignored so recent
> userspace code can function on older kernels. That's the way I'm
> working towards.

Then I'll resend the patch if nobody objects anymore ;)

-- 
The dawn of the fourth age of Linux firewalling is coming; a time of
great struggle and heroic deeds -- J.Kadlecsik got inspired by J.Morris