+uint16_t __rte_experimental
+rte_compressdev_queue_pair_count(uint8_t dev_id)
+{
+ struct rte_compressdev *dev;
+
+ dev = &rte_comp_devices[dev_id];
+ return dev->data->nb_queue_pairs;
+}
+
+static int
+rte_compressdev_queue_pairs_config(struct rte_compressdev *dev,
+ uint16_t nb_qpairs, int socket_id)
+{
+ struct rte_compressdev_info dev_info;
+ void **qp;
+ unsigned int i;
+
+ if ((dev == NULL) || (nb_qpairs < 1)) {
+ COMPRESSDEV_LOG(ERR, "invalid param: dev %p, nb_queues %u",
+ dev, nb_qpairs);
+ return -EINVAL;
+ }
+
+ COMPRESSDEV_LOG(DEBUG, "Setup %d queues pairs on device %u",
+ nb_qpairs, dev->data->dev_id);
+
+ memset(&dev_info, 0, sizeof(struct rte_compressdev_info));
+
+ RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->dev_infos_get, -ENOTSUP);
+ (*dev->dev_ops->dev_infos_get)(dev, &dev_info);
+
+ if ((dev_info.max_nb_queue_pairs != 0) &&
+ (nb_qpairs > dev_info.max_nb_queue_pairs)) {
+ COMPRESSDEV_LOG(ERR, "Invalid num queue_pairs (%u) for dev %u",
+ nb_qpairs, dev->data->dev_id);
+ return -EINVAL;
+ }
+
+ if (dev->data->queue_pairs == NULL) { /* first time configuration */
+ dev->data->queue_pairs = rte_zmalloc_socket(
+ "compressdev->queue_pairs",
+ sizeof(dev->data->queue_pairs[0]) * nb_qpairs,
+ RTE_CACHE_LINE_SIZE, socket_id);
+
+ if (dev->data->queue_pairs == NULL) {
+ dev->data->nb_queue_pairs = 0;
+ COMPRESSDEV_LOG(ERR,
+ "failed to get memory for qp meta data, nb_queues %u",
+ nb_qpairs);
+ return -(ENOMEM);
+ }
+ } else { /* re-configure */
+ int ret;
+ uint16_t old_nb_queues = dev->data->nb_queue_pairs;
+
+ qp = dev->data->queue_pairs;
+
+ RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_pair_release,
+ -ENOTSUP);
+
+ for (i = nb_qpairs; i < old_nb_queues; i++) {
+ ret = (*dev->dev_ops->queue_pair_release)(dev, i);
+ if (ret < 0)
+ return ret;
+ }
+
+ qp = rte_realloc(qp, sizeof(qp[0]) * nb_qpairs,
+ RTE_CACHE_LINE_SIZE);
+ if (qp == NULL) {
+ COMPRESSDEV_LOG(ERR,
+ "failed to realloc qp meta data, nb_queues %u",
+ nb_qpairs);
+ return -(ENOMEM);
+ }
+
+ if (nb_qpairs > old_nb_queues) {
+ uint16_t new_qs = nb_qpairs - old_nb_queues;
+
+ memset(qp + old_nb_queues, 0,
+ sizeof(qp[0]) * new_qs);
+ }
+
+ dev->data->queue_pairs = qp;
+
+ }
+ dev->data->nb_queue_pairs = nb_qpairs;
+ return 0;
+}
+
+static int
+rte_compressdev_queue_pairs_release(struct rte_compressdev *dev)
+{
+ uint16_t num_qps, i;
+ int ret;
+
+ if (dev == NULL) {
+ COMPRESSDEV_LOG(ERR, "invalid param: dev %p", dev);
+ return -EINVAL;
+ }
+
+ num_qps = dev->data->nb_queue_pairs;
+
+ if (num_qps == 0)
+ return 0;
+
+ COMPRESSDEV_LOG(DEBUG, "Free %d queues pairs on device %u",
+ dev->data->nb_queue_pairs, dev->data->dev_id);
+
+ RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->queue_pair_release,
+ -ENOTSUP);
+
+ for (i = 0; i < num_qps; i++) {
+ ret = (*dev->dev_ops->queue_pair_release)(dev, i);
+ if (ret < 0)
+ return ret;
+ }
+
+ if (dev->data->queue_pairs != NULL)
+ rte_free(dev->data->queue_pairs);
+ dev->data->queue_pairs = NULL;
+ dev->data->nb_queue_pairs = 0;
+
+ return 0;
+}
+