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Date:      Mon, 19 Sep 2011 13:47:29 -0400
From:      Arnaud Lacombe <lacombar@gmail.com>
To:        pyunyh@gmail.com
Cc:        Adrian Chadd <adrian@freebsd.org>, freebsd-hackers@freebsd.org, Hooman Fazaeli <fazaeli@sepehrs.com>, Jack Vogel <jfvogel@gmail.com>, jfv@freebsd.org, Luigi Rizzo <rizzo@iet.unipi.it>
Subject:   Re: intel checksum offload
Message-ID:  <CACqU3MUzErON9SR%2BtMX%2B4SNdFH=vozaqUP1qt7wZebAp1hWESg@mail.gmail.com>
In-Reply-To: <20110919165920.GA4202@michelle.cdnetworks.com>
References:  <20110917203218.GC13993@michelle.cdnetworks.com> <CACqU3MXffDvH%2B5E3_excGswvsYx0eJ1WxTP16tswy9eK%2BvyH%2Bg@mail.gmail.com> <20110918210647.GA8930@onelab2.iet.unipi.it> <CACqU3MXSms9M-H9jj6zf5qWo05SLNCDBwDv%2B%2BmW5iTNjNLuKkA@mail.gmail.com> <20110919020131.GA11657@onelab2.iet.unipi.it> <CACqU3MV3MHGpV0SR36Ur9cPfGzh4K82dop1mXVRkk51mTCpTrQ@mail.gmail.com> <CAFOYbcktOR4SOuktOfQc0WvbQvH-9ViUeAQ4JJax_VbebWnC6w@mail.gmail.com> <4E76E5B9.9080301@sepehrs.com> <CAJ-Vmo=yaMTeSi07-zZNMnarwazpYUWSvit33Bfpx8Wd0U%2BkEg@mail.gmail.com> <CACqU3MWEdcDeUtFocS9%2B1nrJQ5VjwJDr8nggyRz7JLN6ZbK=QQ@mail.gmail.com> <20110919165920.GA4202@michelle.cdnetworks.com>

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Hi,

On Mon, Sep 19, 2011 at 12:59 PM, YongHyeon PYUN <pyunyh@gmail.com> wrote:
> On Mon, Sep 19, 2011 at 10:17:22AM -0400, Arnaud Lacombe wrote:
>> Hi,
>>
>> On Mon, Sep 19, 2011 at 5:28 AM, Adrian Chadd <adrian@freebsd.org> wrote:
>> > Arnaud (and others),
>> >
>> > Liaising with vendors is not an easy task. The reason why Intel (and
>> > other vendors) don't supply detailed history and reasoning for their
>> > development efforts is that their engineers are likely tasked with
>> > "making it work" versus "writing lots of stuff down for public
>> > release." In some instances, the vendor support of FreeBSD (and "free"
>> > open source in general) is done as a side-project by some of the
>> > engineers inside the company.
>> >
>> > So in this case, you may find that Jack and the other engineers at
>> > Intel just don't have the time or resources to dedicate the kinds of
>> > feedback and support you seem to be after. He and others likely have a
>> > huge set of tasks to do at work and none of them officially include
>> > "support FreeBSD/Linux developers by providing detailed feedback and
>> > assistance." So whenever Jack pops up to help out, he's likely doing
>> > it in his spare time. :-)
>> >
>> Yes, and he seems to really like to waste his spare time by repeating
>> me for two months to increase `kern.ipc.nmbclusters' to fix issue I
>> was seeing, when the code was clearly buggy, even when I sent him
>> patchs fixing issues.
>>
>
> If you think you encountered a driver bug, could you share it with
> us? I didn't closely follow em(4)/lem(4)/igb(4) changes for a long
> time so I'm not sure whether I can come up with reasonable fix for
> the issue but I may be able to help you.
>
They ended up being fixed, thanks :-)

Now, up until next week, we were struggle on the mbuf corruption I
reported on freebsd-net@, but I do not think it is a driver issue
per-se.

 - Arnaud



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