netdev - Re: [RFC ipsec-next] xfrm: avoid creating temporary SA when there are no listeners

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Message-ID: <20140128075910.GP31491@secunet.com>
Date:	Tue, 28 Jan 2014 08:59:10 +0100
From:	Steffen Klassert <steffen.klassert@...unet.com>
To:	Horia Geanta <horia.geanta@...escale.com>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: Re: [RFC ipsec-next] xfrm: avoid creating temporary SA when there
 are no listeners

On Sun, Jan 26, 2014 at 11:50:52AM +0200, Horia Geanta wrote:
> In the case when KMs have no listeners, km_query() will fail and
> temporary SAs are garbage collected immediately after their allocation.
> This causes strain on memory allocation, leading even to OOM since
> temporary SA alloc/free cycle is performed for every packet
> and garbage collection does not keep up the pace.
> 
> The sane thing to do is to make sure we have audience before
> temporary SA allocation.
> 
> Signed-off-by: Horia Geanta <horia.geanta@...escale.com>

No objections from me, looks ok.
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