netdev - Re: [PATCHv2 net-next] xfrm: Make xfrm

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Message-ID: <20130813075519.GN25511@secunet.com>
Date:	Tue, 13 Aug 2013 09:55:20 +0200
From:	Steffen Klassert <steffen.klassert@...unet.com>
To:	Fan Du <fan.du@...driver.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org
Subject: Re: [PATCHv2 net-next] xfrm: Make xfrm_state timer monotonic

On Mon, Aug 12, 2013 at 01:40:07PM +0800, Fan Du wrote:
> 
> 
> On 2013年08月06日 17:22, Steffen Klassert wrote:
> >On Tue, Aug 06, 2013 at 02:57:05PM +0800, Fan Du wrote:
> >>xfrm_state timer should be independent of system clock change,
> >>so switch to monotonic clock base.
> >>
> >
> >I think a monotonic timer will reintroduce a bug on suspend/resume
> >that was fixed by commit 9e0d57fd6
> >(xfrm: SAD entries do not expire correctly after suspend-resume)
> >
> >Please make sure that this does not happen.
> 
> What about using CLOCK_BOOTTIME? it's monotonic, but includes suspend time as well.

As I said, I'm open to everything that fixes your problem and does not
introduce a regression. I'll consider applying after some testing
if noone else has objections.

Thanks!

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