From: Steffen Klassert <steffen.klassert@secunet•com>
To: Fan Du <fan.du@windriver•com>
Cc: davem@davemloft•net, stephen@networkplumber•org,
dev@lists•strongswan.org, netdev@vger•kernel.org
Subject: Re: [PATCH net-next 0/2] Pack struct xfrm_usersa_info and struct xfrm_userpolicy_info
Date: Tue, 7 Jan 2014 08:47:24 +0100 [thread overview]
Message-ID: <20140107074724.GV31491@secunet.com> (raw)
In-Reply-To: <1389077339-12814-1-git-send-email-fan.du@windriver.com>
On Tue, Jan 07, 2014 at 02:48:57PM +0800, Fan Du wrote:
> When trying to setup IPsec configuration on a 64bits host with
> iproute2(32bits compiled), the intened xfrm policy and sa is
> either deficit or wrong when kernel trying to parse user land
> information.
>
> Further investigatino shows that:
> L: kernel
> R: iproute2
>
> sizeof userpolicy usersa
> 64bits(unpacked) 168/168 224/224
> 32bits(unpacked) 164/164 220/220
> ^ ^
> L R
>
> To keep kernel and user land see a consistent structure, after
> add packing attribute, now it looks like this:
>
> 64bits( packed) 164/164 217/217
> 32bits( packed) 164/164 217/217
> ^ ^
> L R
>
We don't change userspace exported structures. This breaks
existing userspace tools.
next prev parent reply other threads:[~2014-01-07 7:47 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-01-07 6:48 [PATCH net-next 0/2] Pack struct xfrm_usersa_info and struct xfrm_userpolicy_info Fan Du
2014-01-07 6:48 ` [PATCH net-next 1/2] include/uapi/linux/xfrm.h: Pack " Fan Du
2014-01-07 22:52 ` Sergei Shtylyov
2014-01-09 8:39 ` Fan Du
2014-01-09 22:58 ` Sergei Shtylyov
2014-01-09 23:07 ` Sergei Shtylyov
2014-01-07 6:48 ` [PATCH net-next 2/2] include/uapi/linux/xfrm.h: Pack struct xfrm_usersa_info Fan Du
2014-01-08 20:33 ` Ben Hutchings
2014-01-09 8:24 ` Fan Du
2014-01-09 18:58 ` Ben Hutchings
2014-01-07 6:55 ` [PATCH net-next 0/2] Pack struct xfrm_usersa_info and struct xfrm_userpolicy_info Fan Du
2014-01-07 7:47 ` Steffen Klassert [this message]
2014-01-07 7:59 ` Fan Du
2014-01-07 10:00 ` David Laight
2014-01-09 8:34 ` Fan Du
2014-01-09 9:07 ` David Laight
2014-01-07 18:07 ` David Miller
2014-01-09 8:24 ` Fan Du
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20140107074724.GV31491@secunet.com \
--to=steffen.klassert@secunet$(echo .)com \
--cc=davem@davemloft$(echo .)net \
--cc=dev@lists$(echo .)strongswan.org \
--cc=fan.du@windriver$(echo .)com \
--cc=netdev@vger$(echo .)kernel.org \
--cc=stephen@networkplumber$(echo .)org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox