netdev - Re: [PATCH 02/05] ipv6: RFC4214 Support

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Date:	Thu, 08 Nov 2007 04:47:45 +0900 (JST)
From:	YOSHIFUJI Hideaki / 吉藤英明 
	<yoshfuji@...ux-ipv6.org>
To:	Fred.L.Templin@...ing.com
Cc:	netdev@...eo.de, netdev@...r.kernel.org, yoshfuji@...ux-ipv6.org
Subject: Re: [PATCH 02/05] ipv6: RFC4214 Support

In article <39C363776A4E8C4A94691D2BD9D1C9A1029EDBF4@...-NW-7V2.nw.nos.boeing.com> (at Wed, 7 Nov 2007 10:52:47 -0800), "Templin, Fred L" <Fred.L.Templin@...ing.com> says:

> > > > > > +	if (((ipv4 >= 0x01000000) && (ipv4 < 0x0a000000)) ||
> > > > > > +	    ((ipv4 >= 0x0b000000) && (ipv4 < 0x7f000000)) ||
> > > > > > +	    ((ipv4 >= 0x80000000) && (ipv4 < 0xa9fe0000)) ||
> > > > > > +	    ((ipv4 >= 0xa9ff0000) && (ipv4 < 0xac100000)) ||
> > > > > > +	    ((ipv4 >= 0xac200000) && (ipv4 < 0xc0a80000)) ||
> > > > > > +	    ((ipv4 >= 0xc0a90000) && (ipv4 < 0xc6120000)) ||
> > > > > > +	    ((ipv4 >= 0xc6140000) && (ipv4 < 
> > 0xe0000000))) eui[0] |=
> > > > > > 0x2;

> Maybe it is I who did not understand. Can you suggest a clean solution?

You could write each element as LOOPBACK(), MULTICAST()
etc.
	eui[0] = (!ZERONETO(a) &&
	          !PRIVATE_10(a) &&
		  !LINKLOCAL(a) &&
		  !PRIVATE_172(a) &&
		  !PRIVATE_192(a) &&
		  !NETICDEVBENCH(a) &&
		  !MULTICAST(a)) ? 2 : 0;

--yoshfuji
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