+int
+rte_eth_from_rings(const char *name, struct rte_ring *const rx_queues[],
+ const unsigned int nb_rx_queues,
+ struct rte_ring *const tx_queues[],
+ const unsigned int nb_tx_queues,
+ const unsigned int numa_node)
+{
+ struct ring_internal_args args = {
+ .rx_queues = rx_queues,
+ .nb_rx_queues = nb_rx_queues,
+ .tx_queues = tx_queues,
+ .nb_tx_queues = nb_tx_queues,
+ .numa_node = numa_node,
+ .addr = &args,
+ };
+ char args_str[32];
+ char ring_name[RTE_RING_NAMESIZE];
+ uint16_t port_id = RTE_MAX_ETHPORTS;
+ int ret;
+
+ /* do some parameter checking */
+ if (rx_queues == NULL && nb_rx_queues > 0) {
+ rte_errno = EINVAL;
+ return -1;
+ }
+ if (tx_queues == NULL && nb_tx_queues > 0) {
+ rte_errno = EINVAL;
+ return -1;
+ }
+ if (nb_rx_queues > RTE_PMD_RING_MAX_RX_RINGS) {
+ rte_errno = EINVAL;
+ return -1;
+ }
+
+ snprintf(args_str, sizeof(args_str), "%s=%p",
+ ETH_RING_INTERNAL_ARG, &args);
+
+ ret = snprintf(ring_name, sizeof(ring_name), "net_ring_%s", name);
+ if (ret >= (int)sizeof(ring_name)) {
+ rte_errno = ENAMETOOLONG;
+ return -1;
+ }
+
+ ret = rte_vdev_init(ring_name, args_str);
+ if (ret) {
+ rte_errno = EINVAL;
+ return -1;
+ }
+
+ ret = rte_eth_dev_get_port_by_name(ring_name, &port_id);
+ if (ret) {
+ rte_errno = ENODEV;
+ return -1;
+ }
+
+ return port_id;
+}
+
+int
+rte_eth_from_ring(struct rte_ring *r)
+{
+ return rte_eth_from_rings(r->name, &r, 1, &r, 1,
+ r->memzone ? r->memzone->socket_id : SOCKET_ID_ANY);
+}