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

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Date:	Thu, 21 Apr 2016 18:58:23 +0200
From:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:	netdev@...r.kernel.org
Cc:	davem@...emloft.net, roopa@...ulusnetworks.com,
	eric.dumazet@...il.com, tgraf@...g.ch, jhs@...atatu.com
Subject: [PATCH net-next v2 0/4] libnl: enhance API to ease 64bit alignment for attribute

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()

 include/net/netlink.h          | 39 +++++++++++++----
 include/uapi/linux/rtnetlink.h |  1 +
 lib/nlattr.c                   | 99 ++++++++++++++++++++++++++++++++++++++++++
 net/core/rtnetlink.c           | 22 +++-------
 net/ipv4/ipmr.c                |  4 +-
 net/ipv6/ip6mr.c               |  4 +-
 6 files changed, 140 insertions(+), 29 deletions(-)

Comments are welcomed,
Regards,
Nicolas