[dpdk-dev] [PATCH] vhost: add interface name to virtio-net struct

[Czesnowicz, Przemyslaw]

> Hi Thomas,
> 
> A basic vHost use case will work, for example a single Virtual Machine with a
> vHost port. However normal vSwitching use cases will require the use of multiple
> vHost ports and multiple VMs. With that in mind, it is essential that the vSwitch
> has some way of knowing which vHost port it is sending to and receiving packets
> from. This patch resolves this issue by exposing the tap device name of the
> vHost device. Without that information we cannot determine the particular
> vHost port to send/receive from, which in the context of switching, is a critical
> problem.


Exactly.
The vSwitch uses tap name to associate the virtio device with ovs port.
Without this change the vhost library cannot be used in vSwitch.

Regards
Przemek

> 
> Thanks,
> Ciara
>