[dpdk-dev] [PATCH] net/vhost: Add function to retreive the 'vid' for a given port id.

[Thomas Monjalon]

2016-09-29 09:21, Mcnamara, John:
> > 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 <ciara.loftus at intel.com>
> 
> Acked-by: John McNamara <john.mcnamara at intel.com>

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?