From owner-svn-src-all@FreeBSD.ORG  Fri May 25 02:25:36 2012
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From: "Bjoern A. Zeeb" <bz@FreeBSD.org>
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Subject: Re: svn commit: r235960 - head/sys/net
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On 25. May 2012, at 02:21 , Bjoern A. Zeeb wrote:

> Author: bz
> Date: Fri May 25 02:21:17 2012
> New Revision: 235960
> URL: http://svn.freebsd.org/changeset/base/235960
> 
> Log:
>  MFp4 bz_ipv6_fast:
> 
>    Simple yet effective change enabling checksum "offload" on loopback
>    for IPv6 to avoid expensive computations.

While not particularly related but a good example:  if we would
provide a better library KPI we could possibly even defer
(pseudo-header) checksum calculations to drivers, which expect
different calculations already anyway, and even save these cycles
on loop as well.

Something more to ponder along with other factoring out of drivers etc.

/bz

-- 
Bjoern A. Zeeb                                 You have to have visions!
   It does not matter how good you are. It matters what good you do!