+
+ uint64_t reserved_64s[2]; /**< Reserved for future fields */
+ void *reserved_ptrs[2]; /**< Reserved for future fields */
+};
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change, or be removed, without prior notice
+ *
+ * A structure used to return the hairpin capabilities that are supported.
+ */
+struct rte_eth_hairpin_cap {
+ /** The max number of hairpin queues (different bindings). */
+ uint16_t max_nb_queues;
+ /** Max number of Rx queues to be connected to one Tx queue. */
+ uint16_t max_rx_2_tx;
+ /** Max number of Tx queues to be connected to one Rx queue. */
+ uint16_t max_tx_2_rx;
+ uint16_t max_nb_desc; /**< The max num of descriptors. */
+};
+
+#define RTE_ETH_MAX_HAIRPIN_PEERS 32
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change, or be removed, without prior notice
+ *
+ * A structure used to hold hairpin peer data.
+ */
+struct rte_eth_hairpin_peer {
+ uint16_t port; /**< Peer port. */
+ uint16_t queue; /**< Peer queue. */
+};
+
+/**
+ * @warning
+ * @b EXPERIMENTAL: this API may change, or be removed, without prior notice
+ *
+ * A structure used to configure hairpin binding.
+ */
+struct rte_eth_hairpin_conf {
+ uint16_t peer_count; /**< The number of peers. */
+ struct rte_eth_hairpin_peer peers[RTE_ETH_MAX_HAIRPIN_PEERS];