Parameter `num_queues` for virtio_scsi PCI device means
maximum number of queues, it SHOULD include the `eventq`
and `controlq`, while for `vhost_user` RPC call, it means
the number of IO queues, so here we use it as `max_queues`
in lib/virtio and add the fixed number queues for `vhost_user`
SCSI device.
Also fix `vhost_fuzz` to get `num_queues` earlier than
negotiate the feature bits.
Change-Id: I41b3da5e4b4dc37127befd414226ea6eafcd9ad0
Signed-off-by: Changpeng Liu <changpeng.liu@intel.com>
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/13791
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>