netdev - Re: [PATCH] [XFRM] Fix unexpected SA hard expiration after changing date

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Date:	Mon, 25 Jun 2012 15:29:27 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	fdu@...driver.com
Cc:	herbert@...dor.hengli.com.au, netdev@...r.kernel.org
Subject: Re: [PATCH] [XFRM] Fix unexpected SA hard expiration after
 changing date

From: Fan Du <fdu@...driver.com>
Date: Thu, 21 Jun 2012 14:26:01 +0800

> After SA is setup, one timer is armed to detect soft/hard expiration,
> however the timer handler uses xtime to do the math. This makes hard
> expiration occurs first before soft expiration after setting new date
> with big interval. As a result new child SA is deleted before rekeying
> the new one.
> 
> Signed-off-by: Fan Du <fdu@...driver.com>
> ---
>  include/net/xfrm.h    |  3 +++
>  net/xfrm/xfrm_state.c | 21 +++++++++++++++++----
>  2 files changed, 20 insertions(+), 4 deletions(-)
> 
> diff --git a/include/net/xfrm.h b/include/net/xfrm.h
> index 2933d74..8d16777 100644
> --- a/include/net/xfrm.h
> +++ b/include/net/xfrm.h
> @@ -197,6 +197,8 @@ struct xfrm_state
>  
>  	struct xfrm_lifetime_cur curlft;
>  	struct timer_list	timer;
> +	/* used to fix curlft->add_time when changing date */
> +	long		saved_tmo;

'saved_tmo' is not properly indented to line up with the
struct member names above it.
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