netdev - Re: [PATCHv3 net-next] xfrm: add LINUX_MIB_XFRMACQUIREERROR statistic counter

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Date:	Thu, 6 Jun 2013 14:23:50 +0200
From:	Steffen Klassert <steffen.klassert@...unet.com>
To:	Fan Du <fan.du@...driver.com>
Cc:	herbert@...dor.hengli.com.au, davem@...emloft.net,
	netdev@...r.kernel.org
Subject: Re: [PATCHv3 net-next] xfrm: add LINUX_MIB_XFRMACQUIREERROR
 statistic counter

On Thu, Jun 06, 2013 at 10:15:54AM +0800, Fan Du wrote:
> When host ping its peer, ICMP echo request packet triggers IPsec
> policy, then host negotiates SA secret with its peer. After IKE
> installed SA for OUT direction, but before SA for IN direction
> installed, host get ICMP echo reply from its peer. At the time
> being, the SA state for IN direction could be XFRM_STATE_ACQ,
> then the received packet will be dropped after adding
> LINUX_MIB_XFRMINSTATEINVALID statistic.
> 
> Adding a LINUX_MIB_XFRMACQUIREERROR statistic counter for such
> scenario when SA in larval state is much clearer for user than
> LINUX_MIB_XFRMINSTATEINVALID which indicates the SA is totally
> bad.
> 
> Signed-off-by: Fan Du <fan.du@...driver.com>

Applied to ipsec-next.

Thanks!
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