netdev - Re: [Patch net-next] net: clean up skb headers code

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Date:	Tue, 28 May 2013 23:49:49 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	amwang@...hat.com
Cc:	netdev@...r.kernel.org, horms@...ge.net.au
Subject: Re: [Patch net-next] net: clean up skb headers code

From: Cong Wang <amwang@...hat.com>
Date: Wed, 29 May 2013 14:48:06 +0800

> On Tue, 2013-05-28 at 23:36 -0700, David Miller wrote:
>> From: Cong Wang <amwang@...hat.com>
>> Date: Wed, 29 May 2013 14:09:00 +0800
>> 
>> > commit 1a37e412a0225fcba5587 (net: Use 16bits for *_headers
>> > fields of struct skbuff) converts skb->*_header to u16,
>> > therefore 1) we could just use 0xFFFFF instead of (__u16) ~0U
>> > 2) some #if NET_SKBUFF_DATA_USES_OFFSET is useless now.
>> > 
>> > 
>> > Cc: David S. Miller <davem@...emloft.net>
>> > Cc: Simon Horman <horms@...ge.net.au>
>> > Signed-off-by: Cong Wang <amwang@...hat.com>
>> 
>> I want to use something that will either break the build or
>> automatically work if the type changes again.
>> 
>> So something like "X = (typeof(X)) ~0U;".
> 
> Yeah, this is even better. I will update this patch.

Please sumbit it against Simon's series, which I'm about to push to
net-next.

Thanks.
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