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

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Message-ID: <20130712214836.GR12611@order.stressinduktion.org>
Date:	Fri, 12 Jul 2013 23:48:36 +0200
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Nicolas Dichtel <nicolas.dichtel@...nd.com>,
	netdev@...r.kernel.org, yoshfuji@...ux-ipv6.org,
	petrus.lt@...il.com, davem@...emloft.net
Subject: Re: [PATCH RFC] ipv6: fix route selection if kernel is not compiled with CONFIG_IPV6_ROUTER_PREF

On Fri, Jul 12, 2013 at 09:20:23PM +0200, Hannes Frederic Sowa wrote:
> --- a/net/ipv6/ip6_fib.c
> +++ b/net/ipv6/ip6_fib.c
> @@ -682,6 +682,7 @@ static int fib6_add_rt2node(struct fib6_node *fn, struct rt6_info *rt,
>                                         rt->rt6i_nsiblings = 0;
>                                 if (!(iter->rt6i_flags & RTF_EXPIRES))
>                                         return -EEXIST;
> +                               iter->rt6i_flags |= rt->rt6i_flags & RTF_DYNAMIC;
>                                 if (!(rt->rt6i_flags & RTF_EXPIRES))
>                                         rt6_clean_expires(iter);
>                                 else
> 

This was not necessary and just complicated things because we would have to
special-case the toggling of the RTF_DYNAMIC flag to also get removed from the
ecmp route set.

Thanks,

  Hannes

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