Support setting qdisc for virtual NICs

[eebssk1]

Is there an existing issue for this?

• There is no existing issue for this feature

What are you currently unable to do

It's impossible to auto set the qdisc for the vNIC created by incus for instances. Unless you are able to write a program to monitor the interface creation and do such for them.

What do you think would need to be added

Add a config option to network devices that allow you set the desired qdisc for the device.

For VMs, more work need to be done because qemu nic typically support multi queue and the master qdisc is mq. It should add another options that allow user decide whether they want to replace the slave qdisc or the master "mq".

[eebssk1]

BTW if most of the interfaces are from incus and the qdisc requirement is static , you can use net.core.default_qdisc to set them.
Them you just need to set the qdisc for you real nic. This way it's slightly less work.
This does not apply to veth which is used for containers,since veth does not use queue by default.