Messages in this thread | | | From | "D. Stussy" <> | 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 |
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"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.
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