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Date: Thu, 31 Oct 2013 21:05:03 +0100
From: Luigi Rizzo <rizzo@iet.unipi.it>
To: Ian Lepore <ian@FreeBSD.org>
Subject: Re: svn commit: r257455 - head/sys/net
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On Thu, Oct 31, 2013 at 01:27:25PM -0600, Ian Lepore wrote:
...
> Is there any chance all this reworking might get us to a position where
> the protocol header in an mbuf doesn't have to be 32-bit aligned
> anymore?  We pay a pretty heavy price for that requirement in the
> drivers of the least capable hardware we support, the systems that have
> the least horsepower to spare to make an extra copy of each packet to
> realign it.

So are you suggesting to use some 'copy_unaligned_32()' function/macro to
access 32-bit protocol fields in the network stack ?
(16-bit entries should not be an issue)

cheers
luigi