netdev - Re: [PATCH 1/4] xfrm: increment genid before bumping state genids

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Message-ID: <20100331105023.GA12845@gondor.apana.org.au>
Date:	Wed, 31 Mar 2010 18:50:23 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Timo Teras <timo.teras@....fi>
Cc:	netdev@...r.kernel.org
Subject: Re: [PATCH 1/4] xfrm: increment genid before bumping state genids

On Wed, Mar 31, 2010 at 01:17:03PM +0300, Timo Teras wrote:
> __xfrm_state_bump_genids() is used to update the genid of all
> matching xfrm_state's, so any bundle using the state would get
> refreshed with the newly inserted state.
> 
> However, since __xfrm_state_bump_genids() is called before the
> __xfrm_state_insert() which actually bumps the genid counter,
> it is possible that the genid was not updated at all (if there
> was no state inserts previously).
> 
> This is fixed by moving the genid incrementation to
> __xfrm_state_bump_genids() so the older states are guaranteed
> to get different genid.
> 
> Signed-off-by: Timo Teras <timo.teras@....fi>

It would appear that not all xfrm_state_insert calls are preceded
by xfrm_state_bump_genids so this patch isn't correct.

Cheers,
-- 
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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