netdev - Re: [net-next 4/7] ixgbe: Add function for testing status bits in Rx descriptor

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Date:	Sat, 11 Feb 2012 19:06:14 +0000
From:	Ben Hutchings <bhutchings@...arflare.com>
To:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
CC:	<davem@...emloft.net>,
	Alexander Duyck <alexander.h.duyck@...el.com>,
	<netdev@...r.kernel.org>, <gospo@...hat.com>, <sassmann@...hat.com>
Subject: Re: [net-next 4/7] ixgbe: Add function for testing status bits in
 Rx descriptor

On Fri, 2012-02-10 at 16:08 -0800, Jeff Kirsher wrote:
> From: Alexander Duyck <alexander.h.duyck@...el.com>
> 
> This change adds a small function for testing Rx status bits in the
> descriptor.  The advantage to this is that we can avoid unnecessary
> byte swaps on big endian systems.
[...]
> +	/* unmap the sg list when FCPRSP is received */
> +	case __constant_cpu_to_le32(IXGBE_RXDADV_STAT_FCSTAT_FCPRSP):
[...]

cpu_to_le32() works as a compile-time constant when given a constant
argument.  You shouldn't need this ugly __constant_ prefix.

Ben.

-- 
Ben Hutchings, Staff Engineer, Solarflare
Not speaking for my employer; that's the marketing department's job.
They asked us to note that Solarflare product names are trademarked.

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