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Re: [libvirt] [PATCH] Revert "virNetDevSupportBandwidth: Enable QoS for vhostuser"



On 11/13/2017 09:47 AM, Martin Kletzander wrote:
> On Fri, Nov 10, 2017 at 04:23:27PM +0100, Michal Privoznik wrote:
>> https://bugzilla.redhat.com/show_bug.cgi?id=1497410
>>
>> This reverts commit bc8a99ef06417a2303ccab455f9f045e2a617916.
>>
>> The vhostuser is not a TAP. Therefore our QoS code is not able to
>> set any bandwidth. I don't really understand what I was thinking.
>>
> 
> Yeah, brainfart on both sides, I guess.  I mean the naming can get
> confusing.
> We still give socket to the chardev if I'm not mistaken.  Also didn't
> you mean
> the vhost-net instead, that one is a TUN, right?  But it's not an interface
> type, so we don't need to allow it here.

vhost-net is a device under /dev that is a backend for 'virtio'
interface model. It is not a TAP device per se. Vhost is a device
emulation within KVM (outside of qemu). 'vhost-net' is then an instance
for network interfaces.

> 
> ACK with ears prepared for both of us :(

Yeah. Luckily we have two pairs of them :-)

Pushed, thanks.

Michal


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