netdev - Re: [PATCH net-next v2 0/4] libnl: enhance API to ease 64bit alignment for attribute

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Date:	Thu, 21 Apr 2016 14:28:31 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	nicolas.dichtel@...nd.com
Cc:	netdev@...r.kernel.org, roopa@...ulusnetworks.com,
	eric.dumazet@...il.com, tgraf@...g.ch, jhs@...atatu.com
Subject: Re: [PATCH net-next v2 0/4] libnl: enhance API to ease 64bit
 alignment for attribute

From: Nicolas Dichtel <nicolas.dichtel@...nd.com>
Date: Thu, 21 Apr 2016 18:58:23 +0200

> Here is a proposal to add more helpers in the libnetlink to manage 64-bit
> alignment issues.
> Note that this series was only tested on x86 by tweeking
> CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS and adding some traces.
> 
> The first patch adds helpers for 64bit alignment and other patches
> use them.
> 
> We could also add helpers for nla_put_u64() and its variants if needed.
> 
> v1 -> v2:
>  - remove patch #1
>  - split patch #2 (now #1 and #2)
>  - add nla_need_padding_for_64bit()

I like it, nice work Nicolas.

Applied to net-next.

I did a quick scan and the following jumped out at me as cases we need
to fix up as well:

1) xfrm_user
2) tcp_info
3) taskstats
4) pkt_{cls,sched}
5) openvswitch
etc.

Most of these are statistic cases just like all of the existing ones
we have fixed so far.