Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752661AbcDZLye (ORCPT ); Tue, 26 Apr 2016 07:54:34 -0400 Received: from zimbra13.linbit.com ([212.69.166.240]:40193 "EHLO zimbra13.linbit.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751978AbcDZLyd (ORCPT ); Tue, 26 Apr 2016 07:54:33 -0400 Date: Tue, 26 Apr 2016 13:54:27 +0200 From: Lars Ellenberg To: Nicolas Dichtel Cc: netdev@vger.kernel.org, davem@davemloft.net, sd@queasysnail.net, johannes@sipsolutions.net, kvalo@codeaurora.org, linux-wireless@vger.kernel.org, jack@suse.com, linux-kernel@vger.kernel.org, pshelar@nicira.com, dev@openvswitch.org, jhs@mojatatu.com, philipp.reisner@linbit.com, drbd-dev@lists.linbit.com Subject: Re: [PATCH net-next 0/8] netlink: align attributes when needed (patchset #3) Message-ID: <20160426115427.GB20950@soda.linbit> Mail-Followup-To: Nicolas Dichtel , netdev@vger.kernel.org, davem@davemloft.net, sd@queasysnail.net, johannes@sipsolutions.net, kvalo@codeaurora.org, linux-wireless@vger.kernel.org, jack@suse.com, linux-kernel@vger.kernel.org, pshelar@nicira.com, dev@openvswitch.org, jhs@mojatatu.com, philipp.reisner@linbit.com, drbd-dev@lists.linbit.com References: <1461657978-13360-1-git-send-email-nicolas.dichtel@6wind.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1461657978-13360-1-git-send-email-nicolas.dichtel@6wind.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2142 Lines: 60 On Tue, Apr 26, 2016 at 10:06:10AM +0200, Nicolas Dichtel wrote: > > This is the continuation (series #3) of the work done to align netlink > attributes when these attributes contain some 64-bit fields. > > It's the last patchset from what I've seen. > > The last user of nla_put_u64() is block/drbd. This module does not use > standard netlink API (see all the stuff in include/linux/genl_magic_struct.h > and include/linux/genl_magic_func.h). I didn't modify it because it's seems > hard to do it whithout testing and fully understanding the context Something like this should just work. diff --git a/include/linux/genl_magic_struct.h b/include/linux/genl_magic_struct.h index eecd19b..5715dac 100644 --- a/include/linux/genl_magic_struct.h +++ b/include/linux/genl_magic_struct.h @@ -80,7 +80,7 @@ extern void CONCAT_(GENL_MAGIC_FAMILY, _genl_unregister)(void); nla_get_u32, nla_put_u32, true) #define __u64_field(attr_nr, attr_flag, name) \ __field(attr_nr, attr_flag, name, NLA_U64, __u64, \ - nla_get_u64, nla_put_u64, false) + nla_get_u64, nla_put_u64_64bit_unspec, false) #define __str_field(attr_nr, attr_flag, name, maxlen) \ __array(attr_nr, attr_flag, name, NLA_NUL_STRING, char, maxlen, \ nla_strlcpy, nla_put, false) diff --git a/include/net/netlink.h b/include/net/netlink.h index e589cb3..38ba770 100644 --- a/include/net/netlink.h +++ b/include/net/netlink.h @@ -871,6 +871,18 @@ static inline int nla_put_u64_64bit(struct sk_buff *skb, int attrtype, } /** + * nla_put_u64_64bit_unspec - nla_put_u64_64bit() with padattr = 0 + * @skb: socket buffer to add attribute to + * @attrtype: attribute type + * @value: numeric value + */ +static inline int nla_put_u64_64bit_unspec(struct sk_buff *skb, int attrtype, + u64 value) +{ + return nla_put_64bit(skb, attrtype, sizeof(u64), &value, NLA_UNSPEC); +} + +/** * nla_put_be64 - Add a __be64 netlink attribute to a socket buffer and align it * @skb: socket buffer to add attribute to * @attrtype: attribute type > (for > example, why include/linux/drbd_genl.h is not part of uapi?). > Any thoughts? probably should be. Thanks, Lars