[PATCH 4/4] net/virtio: fix shadow control queue allocation

[Maxime Coquelin]

It is possible to have the control queue without the vDPA
device advertising VIRTIO_NET_F_MQ.

Let's just rely on hw_cvq flag as in other places.

Fixes: 6fdf32d1e318 ("net/virtio-user: remove max queues limitation")
Cc: stable at dpdk.org

Signed-off-by: Maxime Coquelin <maxime.coquelin at redhat.com>
---
 drivers/net/virtio/virtio_user/virtio_user_dev.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/virtio/virtio_user/virtio_user_dev.c b/drivers/net/virtio/virtio_user/virtio_user_dev.c
index 912e87fecf..5240b44481 100644
--- a/drivers/net/virtio/virtio_user/virtio_user_dev.c
+++ b/drivers/net/virtio/virtio_user/virtio_user_dev.c
@@ -615,7 +615,7 @@ virtio_user_alloc_vrings(struct virtio_user_dev *dev)
 	bool packed_ring = !!(dev->device_features & (1ull << VIRTIO_F_RING_PACKED));
 
 	nr_vrings = dev->max_queue_pairs * 2;
-	if (dev->device_features & (1ull << VIRTIO_NET_F_MQ))
+	if (dev->hw_cvq)
 		nr_vrings++;
 
 	dev->callfds = rte_zmalloc("virtio_user_dev", nr_vrings * sizeof(*dev->callfds), 0);
-- 
2.44.0