linux-kernel - Re: [PATCH] ipwireless: driver for 3G PC Card

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Date:	Wed, 30 Jan 2008 14:28:33 +0100
From:	Pavel Machek <pavel@....cz>
To:	Alexey Dobriyan <adobriyan@...il.com>
Cc:	David Sterba <dsterba@...e.cz>, torvalds@...ux-foundation.org,
	linux-kernel@...r.kernel.org, jkosina@...e.cz,
	benm@...metric.co.nz, stephen@...metric.co.nz
Subject: Re: [PATCH] ipwireless: driver for 3G PC Card

On Mon 2008-01-28 20:53:57, Alexey Dobriyan wrote:
> On Mon, Jan 28, 2008 at 06:19:29PM +0100, David Sterba wrote:
> > ipwireless: driver for PC Card, 3G internet connection
> 
> > +struct nl_first_paket_header {
> > +#if defined(__BIG_ENDIAN)
> > +	unsigned char packet_rank:2;
> > +	unsigned char address:3;
> > +	unsigned char protocol:3;
> > +#else
> > +	unsigned char protocol:3;
> > +	unsigned char address:3;
> > +	unsigned char packet_rank:2;
> > +#endif
> > +	unsigned char length_lsb;
> > +	unsigned char length_msb;
> > +};
> > +
> > +struct nl_packet_header {
> > +#if defined(__BIG_ENDIAN)
> > +	unsigned char packet_rank:2;
> > +	unsigned char address:3;
> > +	unsigned char protocol:3;
> > +#else
> > +	unsigned char protocol:3;
> > +	unsigned char address:3;
> > +	unsigned char packet_rank:2;
> > +#endif
> > +};
> 
> You want __BIG_ENDIAN_BITFIELD here.

Actually, you probably want to avoid bitfields here, and just do bit
arithmetics by hand.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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