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QEmu with virtio-net-pci : Speed and Duplex #2236

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Raizo62 opened this issue Jun 1, 2023 · 3 comments · Fixed by #2235
Closed

QEmu with virtio-net-pci : Speed and Duplex #2236

Raizo62 opened this issue Jun 1, 2023 · 3 comments · Fixed by #2235
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@Raizo62
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Raizo62 commented Jun 1, 2023 •
edited

Hi

On a QEmu device with virtio-net-pci, the linux command ethtool says :

        Speed: Unknown!
        Duplex: Unknown! (255)

In QEmu command, you can set the Linkspeed and duplex settings with -device virtio-net,speed=1000,duplex=full

The idea comes from here in 2018

I believe that the values are fakes.
The values can be overwritten later with ethtool.

I have tested with QEmu 7.2.0 and a Debian Linux VM.
@grossmj
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grossmj commented Jun 2, 2023

We could certainly hard-code the settings, is this what you are asking for?

@Raizo62
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Raizo62 commented Jun 2, 2023

We could certainly hard-code the settings, is this what you are asking for?

yes.

@Raizo62
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Raizo62 commented Jun 2, 2023

Now, i don't need it. But I think that is a plus

Raizo62 referenced this issue in Raizo62/gns3-server Jun 3, 2023
@Raizo62
qemu : with network adapter_type equal to "virtio-net-pci", fix the s…
0b6436d 
…peed to 10000 and duplex to full.

	The values are actually fake.
	(https://github.com/GNS3/gns3-gui/issues/3476)
@grossmj grossmj transferred this issue from GNS3/gns3-gui Jun 3, 2023
@grossmj grossmj linked a pull request Jun 3, 2023 that will close this issue
qemu : with "virtio-net-pci", fix the speed and duplex #2235
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@grossmj grossmj closed this as completed Jun 3, 2023
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qemu : with "virtio-net-pci", fix the speed and duplex Raizo62/gns3-server
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@grossmj @Raizo62