Skip site navigation (1)Skip section navigation (2)
Date:      Sat, 1 Jul 2006 01:33:51 -0500
From:      "Nikolas Britton" <nikolas.britton@gmail.com>
To:        pyunyh@gmail.com
Cc:        freebsd-net@freebsd.org
Subject:   Re: Marvell YukonII Status Update?
Message-ID:  <ef10de9a0606302333r40404013mb36bbaa5b91b9386@mail.gmail.com>
In-Reply-To: <20060701051844.GE54876@cdnetworks.co.kr>
References:  <ef10de9a0606292053i31abe4e2na30ec0028b54da8e@mail.gmail.com> <20060630060956.GA51353@cdnetworks.co.kr> <ef10de9a0606302139t71acf183w645985c467ef0435@mail.gmail.com> <20060701051844.GE54876@cdnetworks.co.kr>

next in thread | previous in thread | raw e-mail | index | archive | help
On 7/1/06, Pyun YongHyeon <pyunyh@gmail.com> wrote:
> On Fri, Jun 30, 2006 at 11:39:14PM -0500, Nikolas Britton wrote:
>  > On 6/30/06, Pyun YongHyeon <pyunyh@gmail.com> wrote:
>  > >On Thu, Jun 29, 2006 at 10:53:52PM -0500, Nikolas Britton wrote:
>  > > > Anyone know what's going on with YukonII support in FreeBSD,
>  > > > specifically the Marvell chips used in PCI-Express add-on cards?
>  > > >
>  > > > Last I checked somebody was developing an experimental driver and
>  > > > Marvell had just released the code to their FreeBSD 5.x/6.x driver:
>  > > > mykbsd60x86-8.12.2.3.tar (bindary kmod package)
>  > > > mykbsd60x86-8.12.1.3-src.tgz (source code)
>  > > >
>  > >
>  > >I don't know current status of the driver. ATM FreeBSD YukonII
>  > >driver has stability issues and the driver needs big cleanups
>  > >if we import the driver into src tree. But I wouldn't do the
>  > >job and I'll spend my spare time to other thing.
>  > >I know, from my previous experience(sk(4), stge(4)), how
>  > >difficult to write a driver without a document and how hard to
>  > >write a correct driver without knowing hardware internals. I'm
>  > >sure there are many developers eager to write YukonII driver if
>  > >they can access the hardware documentation. However I think there
>  > >is no possibility that Marvell releases their chip documentations.
>  > >
>  >
>  > Marvell will give you the docs if you sign an NDA, I know it's stupid
>  > but I think it's the only way... unless we vote with the wallet... Who
>  > has PCI-Express gigabit NIC cards that meet the following criteria?:
>  >
>  > a) Supported by FreeBSD.
>  > b) Unencumbered documentation.
>  > c) Checksum offloading.
>  >
>
> There are many PCIe GigE hardwares upported by em(4) or bge/bce(4).
> AFAIK the only hardware features not supported by em(4)/bge(4) driver
> is TSO. And hardwares supported by em(4) also have a capability to
> offload IPv6 checksumming too but it's not yet supported by the driver.
>

Will TCP Segmentation Offloading help if you already use a 9000 byte
mtu, and is it going to be supported, someday, with em(4)/bge(4)?...
I'm mostly clueless about TSO.



-- 
BSD Podcasts @:
http://bsdtalk.blogspot.com/
http://freebsdforall.blogspot.com/



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?ef10de9a0606302333r40404013mb36bbaa5b91b9386>