netdev - Re: [PATCH] net/netfilter/ipvs/ip_vs

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Message-ID: <4B9E68A0.3060405@trash.net>
Date:	Mon, 15 Mar 2010 18:04:32 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Joe Perches <joe@...ches.com>
CC:	Wensong Zhang <wensong@...ux-vs.org>,
	Simon Horman <horms@...ge.net.au>,
	Julian Anastasov <ja@....bg>,
	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	lvs-devel <lvs-devel@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] net/netfilter/ipvs/ip_vs_ftp.c: Remove use of NIPQUAD

Joe Perches wrote:
> On Mon, 2010-03-15 at 17:20 +0100, Patrick McHardy wrote:
>> Joe Perches wrote:
>>> NIPQUAD has very few uses left.
>>> Remove this use and make the code have the identical form of the only
>>> other use of "%u,%u,%u,%u,%u,%u" in net/ipv4/netfilter/nf_nat_ftp.c
>> Are we trying to remove NIPQUAD? 
> 
> That is a goal for me yes.
> Elimination of unnecessary stuff from kernel.h is useful.
> 
>> In my opinion the current code is
>> preferrable to open-coding NIPQUAD.
> 
> $ grep -r --include=*.[ch] NIPQUAD *
> include/linux/kernel.h:#define NIPQUAD(addr) \
> include/linux/kernel.h:#define NIPQUAD_FMT "%u.%u.%u.%u"
> net/netfilter/ipvs/ip_vs_ftp.c:		sprintf(buf, "%u,%u,%u,%u,%u,%u", NIPQUAD(from.ip),
> 
> As of right now NIPQUAD_FMT is unused and
> could be removed from kernel.h
> 
> There's 1 use of NIPQUAD.
> 
> Maybe instead of removal the #define could be
> moved to netfilter.h or netfilter_ipv4.h
> 
> Another is to consolidate the two uses of
> "%u,%u,%u,%u,%u,%u"
> 
> $ grep -r --include=*.[ch] "%u,%u,%u,%u,%u,u%" *
> fs/cachefiles/bind.c:	_enter("{%u,%u,%u,%u,%u,%u},%s",
> net/ipv4/netfilter/nf_nat_ftp.c:		return snprintf(buffer, buflen, "%u,%u,%u,%u,%u,%u",
> net/netfilter/ipvs/ip_vs_ftp.c:		sprintf(buf, "%u,%u,%u,%u,%u,%u", NIPQUAD(from.ip),
> 
> Maybe these 2 open coded sprintf/snprintf could be
> consolidated and moved to an appropriate include
> like netfilter_ipv4 or another.
> 
> What do you suggest?

Well, removing the last user sounds acceptable :) Applied, thanks.
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