netdev - Re: [PATCH iproute2] ip xfrm: support 64bit kernel and 32bit userspace

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Date:	Fri, 28 Nov 2014 15:08:05 +0800
From:	FengYu LeiDian <fengyuleidian0615@...il.com>
To:	roy.qing.li@...il.com
CC:	netdev@...r.kernel.org
Subject: Re: [PATCH iproute2] ip xfrm: support 64bit kernel and 32bit userspace

于 2014年11月28日 14:58, roy.qing.li@...il.com 写道:
> From: Li RongQing<roy.qing.li@...il.com>  
> 
> The size of struct xfrm_userpolicy_info is 168 bytes for 64bit kernel, and
> 164 bytes for 32bit userspace because of the different alignment. and lead
> to "ip xfrm" be unable to work.
> 
> add a pad in struct xfrm_userpolicy_info, and enable it by set
> KERNEL_64_USERSPACE_32 to y


It's not easy to fix it like this.

Refer:
http://marc.info/?l=linux-netdev&m=139280143513650&w=2
http://thread.gmane.org/gmane.linux.network/157118/focus=157122

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