netdev - Re: [PATCH net RESEND v2] ipv6: fix route selection if kernel is not compiled with CONFIG_IPV6_ROUTER

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Date:	Thu, 11 Jul 2013 12:15:34 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org, petrus.lt@...il.com,
	yoshfuji@...ux-ipv6.org
Subject: Re: [PATCH net RESEND v2] ipv6: fix route selection if kernel is not compiled with CONFIG_IPV6_ROUTER_PREF

On Wed, Jul 10, 2013 at 05:36:33PM -0700, David Miller wrote:
> From: Hannes Frederic Sowa <hannes@...essinduktion.org>
> Date: Wed, 10 Jul 2013 23:00:12 +0200
> 
> > I changed the return value of rt6_check_neigh to:
> >    1 in case of the dst entry validated
> >   -1 in case of we had no dst_entry and we need to do rr now
> >   -2 in case a we had a dst_entry and it did not validate
> 
> Please, at the very least, create an enumeration for this set of
> possible return values.

Yes, this should have caught my eyes earlier.

> Although I don't like how that RR boolean is passed around by
> reference, I can't suggest anything better so I won't require
> you to get rid of that.

I fear so, too. I also tought about marking the soft-fail state in the
pointer or adding a rt6_match structure. But both seem more complex to me.

Will send an updated patch shortly.

Thanks,

  Hannes

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