net/virtio: do not limit packed ring size

Virtio spec only set rule that packed ring maximum size is up to 2^15
entries. Should not limit packed ring size to power of two.

Fixes: aea29aa5d37b ("net/virtio: enable packed virtqueues by default")
Cc: stable@dpdk.org
Signed-off-by: Marvin Liu <yong.liu@intel.com>
Reviewed-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

diff --git a/drivers/net/virtio/virtio_ethdev.c b/drivers/net/virtio/virtio_ethdev.c
index 646de99..044eb10 100644 (file)
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -465,8 +465,8 @@ virtio_init_queue(struct rte_eth_dev *dev, uint16_t vtpci_queue_idx)
                return -EINVAL;
        }
 
-       if (!rte_is_power_of_2(vq_size)) {
-               PMD_INIT_LOG(ERR, "virtqueue size is not powerof 2");
+       if (!vtpci_packed_queue(hw) && !rte_is_power_of_2(vq_size)) {
+               PMD_INIT_LOG(ERR, "split virtqueue size is not powerof 2");
                return -EINVAL;
        }