From: "D. Stussy" <spam+newsgroups@bde-arc.ampr.org>
To: linux-kernel@vger.kernel.org
Subject: Re: Intel e1000 ethernet device, change in kernel v3.4, and jumbo frames setting DENIED.
Date: Thu, 5 Jul 2012 12:55:31 -0700 [thread overview]
Message-ID: <jt4rfk$enl$1@snarked.org> (raw)
In-Reply-To: <jjGoO-7l0-19@gated-at.bofh.it>
"Henrique de Moraes Holschuh" wrote in message
news:jjGoO-7l0-19@gated-at.bofh.it...
On Wed, 04 Jul 2012, D. Stussy wrote:
> There has been some changes to the driver such that things like
> checksum verification is offloaded from the CPU. However, this
> blocks the ability to set a jumbo frame. The kernel does record an
> error indicating that checksum offloading need be disabled fro jumbo
> frame MTU sizes to be used. My e1000 interfaces use the 82574L
> chipset.
>
> 1) Was this an intentional change?
Yes, but I understand Intel is trying to come up with a way not to need it.
> 2) How do I disable that function so I can set jumbo frames with
> "ifconfig" or "ip"? I simply don't know what setting I need to
> pass.
ethtool can do it. Check its manpage, it can manipulate the various NIC
offload engines, as well as other parameters such as dma ring buffer size,
etc.
=====================
I'll look into it. Thanks.
next parent reply other threads:[~2012-07-05 19:55 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <jjE3E-5PM-29@gated-at.bofh.it>
[not found] ` <jjGoO-7l0-19@gated-at.bofh.it>
2012-07-05 19:55 ` D. Stussy [this message]
2012-07-05 23:53 ` Intel e1000 ethernet device, change in kernel v3.4, and jumbo frames setting DENIED D. Stussy
2012-07-04 19:56 D. Stussy
2012-07-04 22:33 ` Henrique de Moraes Holschuh
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