2016-09-29 09:21, Mcnamara, John:

quoted

In some cases when using the vHost PMD, certain vHost library functions
may still need to be accessed. One such example is the
rte_vhost_get_queue_num function which returns the number of virtqueues
reported by the guest - information which is not exposed by the PMD.

This commit introduces a new rte_eth_vhost function that returns the 'vid'
associated with a given port id. This allows the PMD user to call vHost
library functions which require the 'vid' value.

Signed-off-by: Ciara Loftus <redacted>

Acked-by: John McNamara <redacted>

A conclusion to this long thread:
This patch can be helpful in many situations where we need vhost lib when
using vhost PMD. And driver-specific API is acceptable. And this specific
function is not a candidate to be promoted in ethdev.
So it should go in release 16.11.

When overlooking the OVS issue related, this solution seems to be a
workaround. For next release, would it be possible to find a real fix
for vhost PMD and/or ethdev API instead of relying on vhost lib?