Re: Poor performance of ingress filter for separate VMs

Linux Advanced Routing and Traffic Control

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Neil Aggarwal wrote:
Andy:

Ahh, tso will also need to be turned off if you want to see normal/real
sized packets.

I tried this:
ethtool -K v1262 tso off

I get back this reponse:
Cannot set device tcp segmentation offload settings: Operation not supported

I guess I can't change the settings for a virtual device.

Strange, maybe a KVM/whatever virtual driver issue - I guess there are places you can ask.

FWIW I just noticed lo has tso enabled and it turns off OK, so it doesn't have to be a real nic.

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