linux-kernel - Re: [patch v2.6 4/4] libxt_ipvs: user-space lib for netfilter matcher xt

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Date:	Wed, 21 Jul 2010 22:21:59 +0900
From:	Simon Horman <horms@...ge.net.au>
To:	Jan Engelhardt <jengelh@...ozas.de>
Cc:	lvs-devel@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, netfilter@...r.kernel.org,
	netfilter-devel@...r.kernel.org,
	Malcolm Turnbull <malcolm@...dbalancer.org>,
	Wensong Zhang <wensong@...ux-vs.org>,
	Julius Volz <julius.volz@...il.com>,
	Patrick McHardy <kaber@...sh.net>,
	"David S. Miller" <davem@...emloft.net>,
	Hannes Eder <heder@...gle.com>
Subject: Re: [patch v2.6 4/4] libxt_ipvs: user-space lib for netfilter
 matcher xt_ipvs

On Wed, Jul 21, 2010 at 08:35:19AM +0200, Jan Engelhardt wrote:
> 
> On Wednesday 2010-07-21 03:21, Simon Horman wrote:
> >> +
> >> +#define XT_IPVS_IPVS_PROPERTY	(1 << 0) /* all other options imply this one */
> >> +#define XT_IPVS_PROTO		(1 << 1)
> >> +#define XT_IPVS_VADDR		(1 << 2)
> >> +#define XT_IPVS_VPORT		(1 << 3)
> >> +#define XT_IPVS_DIR		(1 << 4)
> >> +#define XT_IPVS_METHOD		(1 << 5)
> >> +#define XT_IPVS_VPORTCTL	(1 << 6)
> >> +#define XT_IPVS_MASK		((1 << 7) - 1)
> >> +#define XT_IPVS_ONCE_MASK	(XT_IPVS_MASK & ~XT_IPVS_IPVS_PROPERTY)
> 
> Can't these just be an enum?

More than one option can be used at once - they form a mini bitmap -
so no, I don't think we can use an enum.

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