linux-kernel - Re: [PATCH 3/3] netxen: qlogic ethernet : Fix Endian Bug.

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Message-ID: <CAOD=uF4CisG9QeVoVjcrBHWfrXk4i6aBhYQxwNL=uUVa978RMw@mail.gmail.com>
Date:	Mon, 12 Mar 2012 15:17:36 +0530
From:	santosh prasad nayak <santoshprasadnayak@...il.com>
To:	David Laight <David.Laight@...lab.com>
Cc:	Rajesh Borundia <rajesh.borundia@...gic.com>,
	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.

here "mac" is in "u64" and I have casted it to "__le64".
Because its required there.

If you have any better suggestion, please let me know.


regards
santosh

On Mon, Mar 12, 2012 at 3:07 PM, David Laight <David.Laight@...lab.com> wrote:
>
>
>> -----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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