netdev - RE: [PATCH 3/3] netxen: qlogic ethernet : Fix Endian Bug.

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Date:	Mon, 12 Mar 2012 09:37:47 -0000
From:	"David Laight" <David.Laight@...LAB.COM>
To:	"santosh prasad nayak" <santoshprasadnayak@...il.com>,
	"Rajesh Borundia" <rajesh.borundia@...gic.com>
Cc:	"Sony Chacko" <sony.chacko@...gic.com>,
	"netdev" <netdev@...r.kernel.org>,
	"linux-kernel" <linux-kernel@...r.kernel.org>,
	<kernel-janitors@...r.kernel.org>
Subject: RE: [PATCH 3/3] netxen: qlogic ethernet : Fix Endian Bug.

 

> -----Original Message-----
> From: netdev-owner@...r.kernel.org 
> [mailto:netdev-owner@...r.kernel.org] On Behalf Of santosh 
> prasad nayak
> Sent: 11 March 2012 09:17
> To: Rajesh Borundia
> Cc: Sony Chacko; netdev; linux-kernel; kernel-janitors@...r.kernel.org
> Subject: Re: [PATCH 3/3] netxen: qlogic ethernet : Fix Endian Bug.
> 
> Thanks Rajesh for clarification.
> Included all your inputs in the following patch.
> This is for review not a formal one. Once review is done I will send a
> formal patch.

I'm not sure of the exact nature of the issues here,
but whenever I see code that casts between the addresses
of integer types large bells start ringing - such code
tends to have unwanted dependencies against the sizes
and endiannesses of the relevant fields.
This code might be ok, but lines like:
> +	if (*(__le64 *)mac == cpu_to_le64(~0ULL)) {
rather give me the willies.

	David


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