netdev - Re: [PATCH] ipv6: use rt6_get_dflt_router to get default router in rt6_route

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Message-ID: <20131108124330.GD5876@order.stressinduktion.org>
Date:	Fri, 8 Nov 2013 13:43:30 +0100
From:	Hannes Frederic Sowa <hannes@...essinduktion.org>
To:	Duan Jiong <duanj.fnst@...fujitsu.com>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [PATCH] ipv6: use rt6_get_dflt_router to get default router in rt6_route_rcv

On Fri, Nov 08, 2013 at 09:56:53AM +0800, Duan Jiong wrote:
> 
> As the rfc 4191 said, the Router Preference and Lifetime values in a
> ::/0 Route Information Option should override the preference and lifetime
> values in the Router Advertisement header. But when the kernel deals with
> a ::/0 Route Information Option, the rt6_get_route_info() always return
> NULL, that means that overriding will not happen, because those default
> routers were added without flag RTF_ROUTEINFO in rt6_add_dflt_router().
> 
> In order to deal with that condition, we should call rt6_get_dflt_router
> when the prefix length is 0.
> 
> Signed-off-by: Duan Jiong <duanj.fnst@...fujitsu.com>

Acked-by: Hannes Frederic Sowa <hannes@...essinduktion.org>

Thanks,

  Hannes

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