TX/RX statistics need to be swapped

[Oleg Vasilev]

On 24.11.2022 14:53, Michal Prívozník wrote:
> On 11/23/22 15:12, Oleg Vasilev wrote:
>> Hi,
>>
>> virDomainNetTypeSharesHostView[1] contains the logic where for some
>> interface types it swaps TX and RX values, because what TX from the
>> inside is RX on the outside and vice versa.
>>
>> We observe a configuration where <interface type='ethernet' /> shows
>> swapped values in statistics, because, apparently, the values are
>> swapped once inside the kernel when going from the inside to the
>> outside, but not swapped second time because of the mentioned logic.
>>
>> Is this a bug? Why in the virDomainNetTypeSharesHostView[1] ethernet is
>> marked as 'non-swapped'?
> 
> 
> Yeah, this looks like a bug. Another scenario where this demonstrates
> itself is QoS. I mean, for the same <bandwidth/> setting one gets
> different values set for interface type network and ethernet. Let me
> post a patch.
Great, thanks! I'll try to test it on our scenario to verify.

Oleg