From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <shemminger@vyatta.com>
Subject: Re: Subject: [PATCH 2/6] bna: Brocade 10Gb Ethernet device driver
Date: Mon, 23 Nov 2009 20:27:24 -0800
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References: <200911240351.nAO3p1AY025627@blc-10-10.brocade.com>
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Cc: <netdev@vger.kernel.org>, <adapter_linux_open_src_team@brocade.com>
To: Rasesh Mody <rmody@brocade.com>
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On Mon, 23 Nov 2009 19:51:01 -0800
Rasesh Mody <rmody@brocade.com> wrote:

> 	cmd.rxf_id_mask[0] = htonl((u32) rxf_id_mask);
> +	cmd.rxf_id_mask[1] = htonl((u32) (rxf_id_mask >> 32));

You could use the lower32() and upper32() macros here.