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Date:      Thu, 07 Sep 2006 16:02:01 +0200
From:      Andre Oppermann <andre@freebsd.org>
To:        Jack Vogel <jfvogel@gmail.com>
Cc:        freebsd-net <freebsd-net@freebsd.org>, freebsd-current <freebsd-current@freebsd.org>, Prafulla Deuskar <pdeuskar@freebsd.org>
Subject:   Re: RFC: TSO patch for current
Message-ID:  <45002659.9050203@freebsd.org>
In-Reply-To: <2a41acea0609051523w55939cdeu71ee9857f40d1294@mail.gmail.com>
References:  <2a41acea0609011551v40338539u4eef48d091dd12ab@mail.gmail.com>	<44F9384C.9070902@freebsd.org>	<2a41acea0609021741y481a04c0r42902166eaba78d7@mail.gmail.com>	<20060905162542.GA63869@hub.freebsd.org> <44FDAF08.20407@freebsd.org>	<20060905182313.GA85389@hub.freebsd.org>	<44FDD65C.6070109@freebsd.org>	<2a41acea0609051410i7d968b88ocf240514ff410452@mail.gmail.com>	<44FDECB6.2040304@freebsd.org> <2a41acea0609051523w55939cdeu71ee9857f40d1294@mail.gmail.com>

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Jack Vogel wrote:
> On 9/5/06, Andre Oppermann <andre@freebsd.org> wrote:
>> > If you do the ifconfig changes there will need to be a small amount of
>> > code added to em_ioctl() but it should be trivial.
>> >
>> > You want me to reissue a driver patch with changes for your code?
>>
>> Yes, please do so.  I've got a dual-em card which I can test with myself.
> 
> OK, attached new patch, this one even has the ioctl change so when
> you get the ifconfig change in it will be ready.

The TSO code is committed.  There has been a slight change with the ifcapabilities
to differentiate between TSO for IPv4 and IPv6 which can be set independently.

The pseudo-header checksum is always provided in m_pkthdr.csum_data, you don't
have to compute it yourself in the driver.

TSO for IPv6 is not yet functional as it is missing the in6_pseudo() function and
some changes to ip6_output().  I have contacted one of our IPv6 gurus to develop
the patches and get it fully functional as well.

-- 
Andre



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