net/virtio: fix Tx queue 0 overriden by queue 128

[ upstream commit 8a886e5 ]

Both Rx queue and Tx queue are VirtQ in virtio, VQ index is 256 for Tx
queue 128. Uint8 type of TxQ VQ index overflows and overrides Tx queue 0
data.

This patch fixes VQ index type with uint16 type.

Fixes: c1f8630 ("virtio: add new driver")

Signed-off-by: Xueming Li <xuemingl@nvidia.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

drivers/net/virtio/virtio_rxtx.c

@@ -834,7 +834,7 @@ virtio_dev_tx_queue_setup(struct rte_eth_dev *dev,
 			unsigned int socket_id __rte_unused,
 			const struct rte_eth_txconf *tx_conf)
 {
-	uint8_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_TQ_QUEUE_IDX;
+	uint16_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_TQ_QUEUE_IDX;
 	struct virtio_hw *hw = dev->data->dev_private;
 	struct virtqueue *vq = hw->vqs[vtpci_queue_idx];
 	struct virtnet_tx *txvq;
@@ -878,7 +878,7 @@ int
 virtio_dev_tx_queue_setup_finish(struct rte_eth_dev *dev,
 				uint16_t queue_idx)
 {
-	uint8_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_TQ_QUEUE_IDX;
+	uint16_t vtpci_queue_idx = 2 * queue_idx + VTNET_SQ_TQ_QUEUE_IDX;
 	struct virtio_hw *hw = dev->data->dev_private;
 	struct virtqueue *vq = hw->vqs[vtpci_queue_idx];