netdev - Re: [PATCH 1/4] ipv4: Fix pmtu propagating

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Message-ID: <20111017121805.GR1830@secunet.com>
Date:	Mon, 17 Oct 2011 14:18:05 +0200
From:	Steffen Klassert <steffen.klassert@...unet.com>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 1/4] ipv4: Fix pmtu propagating

On Fri, Oct 14, 2011 at 07:54:06AM +0200, Steffen Klassert wrote:
> On Thu, Oct 13, 2011 at 01:58:08PM -0400, David Miller wrote:
> > 
> > Please find out exactly why dst->obsolete is non-zero on a freshly
> > looked up route.  It's unexpected.
> 
> Hm, on a slow path route lookup e.g. __mkroute_output() calls
> rt_dst_alloc() which initializes dst->obsolete to -1.

Just a follow up:
git commit d11a4dc18 (ipv4: check rt_genid in dst_check)
changed the initialization value of dst->obsolete from
0 to -1.
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