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Date:	Tue, 10 May 2016 11:09:53 +0200
From:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:	davem@...emloft.net, netdev@...r.kernel.org,
	philipp.reisner@...bit.com, drbd-dev@...ts.linbit.com,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next v3] block/drbd: align properly u64 in nl messages

Le 09/05/2016 15:15, Lars Ellenberg a écrit :
> On Mon, May 09, 2016 at 11:40:20AM +0200, Nicolas Dichtel wrote:
[snip]
>> Maybe prefixing genl_magic_func.h and genl_magic_struct.h by 'drbd_'
>> could be interesting so that new module won't use it. What is your
>> opinion?
> 
> This was supposed to not be DRBD specific.  But it might even still
> need some massaging before it was truly generic. And obviously,
> it does not meet the taste of genetlink folks, to say the least :(
Yes, this file is not generic and netlink APIs are never defined like this.
These tons of macro complexifies the code too much. It's overengineering for
what purpose?
Small examples:
 - the drbd netlink API is not exported via uapi (I wonder how apps using this
   API get it)
 - v2 of the patch is nacked because adding a new attribute may break existing
   apps (in networking code, a lot of new attributes are added in each version)
 - it's not possible to grep to show the definition of an attribute ('git grep
   -w T_bits_total' returns only 1 line)


Regards,
Nicolas

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