net/virtio: reject unsupported Tx multi-queue modes

This driver supports none of DCB or VMDQ modes, therefore must
check and return error if configured incorrectly.

Fixes: c1f86306a026 ("virtio: add new driver")
Cc: stable@dpdk.org
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.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 76bd40a..646de99 100644 (file)
--- a/drivers/net/virtio/virtio_ethdev.c
+++ b/drivers/net/virtio/virtio_ethdev.c
@@ -2073,6 +2073,13 @@ virtio_dev_configure(struct rte_eth_dev *dev)
                return -EINVAL;
        }
 
+       if (txmode->mq_mode != ETH_MQ_TX_NONE) {
+               PMD_DRV_LOG(ERR,
+                       "Unsupported Tx multi queue mode %d",
+                       txmode->mq_mode);
+               return -EINVAL;
+       }
+
        if (dev->data->dev_conf.intr_conf.rxq) {
                ret = virtio_init_device(dev, hw->req_guest_features);
                if (ret < 0)