netdev - Re: [PATCHv3 ipsec-next] xfrm: Do not parse 32bits compiled xfrm netlink msg on 64bits host

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Message-Id: <20150127.112406.159033030097516231.davem@davemloft.net>
Date:	Tue, 27 Jan 2015 11:24:06 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	David.Laight@...LAB.COM
Cc:	fan.du@...el.com, steffen.klassert@...unet.com,
	herbert@...dor.apana.org.au, netdev@...r.kernel.org,
	fengyuleidian0615@...il.com
Subject: Re: [PATCHv3 ipsec-next] xfrm: Do not parse 32bits compiled xfrm
 netlink msg on 64bits host

From: David Laight <David.Laight@...LAB.COM>
Date: Tue, 27 Jan 2015 09:46:21 +0000

> From: Fan Du
>> structure like xfrm_usersa_info or xfrm_userpolicy_info
>> has different sizeof when compiled as 32bits and 64bits
>> due to not appending pack attribute in their definition.
> 
> Don't 'pack' the structure, just ensure that all the fields
> are fixed sized and on their natural boundary.

This horse went out of the door more than a decade ago, we can't
change the layout of any of these structures and must at some point
add code to translate instead.
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