netdev - Re: [PATCH] retain ABI definitions for obsolete multi-queue packet schedulers

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Date:	Fri, 12 Sep 2008 15:58:30 -0700
From:	Stephen Hemminger <shemminger@...tta.com>
To:	David Miller <davem@...emloft.net>
Cc:	kaber@...sh.net, netdev@...r.kernel.org
Subject: Re: [PATCH] retain ABI definitions for obsolete multi-queue packet
 schedulers

On Fri, 12 Sep 2008 15:30:33 -0700 (PDT)
David Miller <davem@...emloft.net> wrote:

> From: Stephen Hemminger <shemminger@...tta.com>
> Date: Fri, 12 Sep 2008 12:25:48 -0700
> 
> > On Fri, 12 Sep 2008 10:00:11 -0700
> > Stephen Hemminger <shemminger@...tta.com> wrote:
> > 
> > > Even though the sch_rr qdisc is now gone in 2.6.27, the kernel
> > > definitions for the attributes need to be maintained because applications
> > > like iproute need to be compatible with older kernels and use santized
> > > kernel headers.
>  ...
> > This should be applied for 2.6.27 since it is a build regression.
> 
> You use a local copy of this header file in iproute2, you don't even
> use the kernel header itself.  It's the worst possible example and
> excuse for this change.
> 
> Nobody references this header directly for these definitions.
> The one and only use is using a local copy.
> 
> iproute2 is the only thing even remotely referencing this stuff.
> 
> So there is no breakage.  The only breakage is if you, Stephen, decide
> to copy the kernel header into iproute2 as-is, and that is your
> choice.  :-)

Every release I copy the sanitized kernel headers resulting
from 'make headers_install'.  That is how they have been maintained and
up until now it worked.  The sch_rr configuration portion was referencing
this.  The point of the sanitized headers was to avoid this nonsense.

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