+/**
+ * @internal
+ * Structure used to hold information about the callbacks to be called for a
+ * queue on RX and TX.
+ */
+struct rte_eth_rxtx_callback {
+ struct rte_eth_rxtx_callback *next;
+ union{
+ rte_rx_callback_fn rx;
+ rte_tx_callback_fn tx;
+ } fn;
+ void *param;
+};
+
+/**
+ * @internal
+ * The generic data structure associated with each ethernet device.
+ *
+ * Pointers to burst-oriented packet receive and transmit functions are
+ * located at the beginning of the structure, along with the pointer to
+ * where all the data elements for the particular device are stored in shared
+ * memory. This split allows the function pointer and driver data to be per-
+ * process, while the actual configuration data for the device is shared.
+ */
+struct rte_eth_dev {
+ eth_rx_burst_t rx_pkt_burst; /**< Pointer to PMD receive function. */
+ eth_tx_burst_t tx_pkt_burst; /**< Pointer to PMD transmit function. */
+ eth_tx_prep_t tx_pkt_prepare;
+ /**< Pointer to PMD transmit prepare function. */
+ eth_rx_queue_count_t rx_queue_count;
+ /**< Get the number of used RX descriptors. */
+ eth_rx_descriptor_status_t rx_descriptor_status;
+ /**< Check the status of a Rx descriptor. */
+ eth_tx_descriptor_status_t tx_descriptor_status;
+ /**< Check the status of a Tx descriptor. */
+
+ /**
+ * points to device data that is shared between
+ * primary and secondary processes.
+ */
+ struct rte_eth_dev_data *data;
+ void *process_private; /**< Pointer to per-process device data. */
+ const struct eth_dev_ops *dev_ops; /**< Functions exported by PMD */
+ struct rte_device *device; /**< Backing device */
+ struct rte_intr_handle *intr_handle; /**< Device interrupt handle */
+ /** User application callbacks for NIC interrupts */
+ struct rte_eth_dev_cb_list link_intr_cbs;
+ /**
+ * User-supplied functions called from rx_burst to post-process
+ * received packets before passing them to the user
+ */
+ struct rte_eth_rxtx_callback *post_rx_burst_cbs[RTE_MAX_QUEUES_PER_PORT];
+ /**
+ * User-supplied functions called from tx_burst to pre-process
+ * received packets before passing them to the driver for transmission.
+ */
+ struct rte_eth_rxtx_callback *pre_tx_burst_cbs[RTE_MAX_QUEUES_PER_PORT];
+ enum rte_eth_dev_state state; /**< Flag indicating the port state */
+ void *security_ctx; /**< Context for security ops */
+
+ uint64_t reserved_64s[4]; /**< Reserved for future fields */
+ void *reserved_ptrs[4]; /**< Reserved for future fields */
+} __rte_cache_aligned;
+
+struct rte_eth_dev_sriov;
+struct rte_eth_dev_owner;
+
+/**
+ * @internal
+ * The data part, with no function pointers, associated with each ethernet
+ * device. This structure is safe to place in shared memory to be common
+ * among different processes in a multi-process configuration.
+ */
+struct rte_eth_dev_data {
+ char name[RTE_ETH_NAME_MAX_LEN]; /**< Unique identifier name */
+
+ void **rx_queues; /**< Array of pointers to RX queues. */
+ void **tx_queues; /**< Array of pointers to TX queues. */
+ uint16_t nb_rx_queues; /**< Number of RX queues. */
+ uint16_t nb_tx_queues; /**< Number of TX queues. */
+
+ struct rte_eth_dev_sriov sriov; /**< SRIOV data */
+
+ void *dev_private;
+ /**< PMD-specific private data.
+ * @see rte_eth_dev_release_port()
+ */
+
+ struct rte_eth_link dev_link; /**< Link-level information & status. */
+ struct rte_eth_conf dev_conf; /**< Configuration applied to device. */
+ uint16_t mtu; /**< Maximum Transmission Unit. */
+ uint32_t min_rx_buf_size;
+ /**< Common RX buffer size handled by all queues. */
+
+ uint64_t rx_mbuf_alloc_failed; /**< RX ring mbuf allocation failures. */
+ struct rte_ether_addr *mac_addrs;
+ /**< Device Ethernet link address.
+ * @see rte_eth_dev_release_port()
+ */
+ uint64_t mac_pool_sel[ETH_NUM_RECEIVE_MAC_ADDR];
+ /**< Bitmap associating MAC addresses to pools. */
+ struct rte_ether_addr *hash_mac_addrs;
+ /**< Device Ethernet MAC addresses of hash filtering.
+ * @see rte_eth_dev_release_port()
+ */
+ uint16_t port_id; /**< Device [external] port identifier. */
+
+ __extension__
+ uint8_t promiscuous : 1,
+ /**< RX promiscuous mode ON(1) / OFF(0). */
+ scattered_rx : 1,
+ /**< RX of scattered packets is ON(1) / OFF(0) */
+ all_multicast : 1,
+ /**< RX all multicast mode ON(1) / OFF(0). */
+ dev_started : 1,
+ /**< Device state: STARTED(1) / STOPPED(0). */
+ lro : 1,
+ /**< RX LRO is ON(1) / OFF(0) */
+ dev_configured : 1;
+ /**< Indicates whether the device is configured.
+ * CONFIGURED(1) / NOT CONFIGURED(0).
+ */
+ uint8_t rx_queue_state[RTE_MAX_QUEUES_PER_PORT];
+ /**< Queues state: HAIRPIN(2) / STARTED(1) / STOPPED(0). */
+ uint8_t tx_queue_state[RTE_MAX_QUEUES_PER_PORT];
+ /**< Queues state: HAIRPIN(2) / STARTED(1) / STOPPED(0). */
+ uint32_t dev_flags; /**< Capabilities. */
+ int numa_node; /**< NUMA node connection. */
+ struct rte_vlan_filter_conf vlan_filter_conf;
+ /**< VLAN filter configuration. */
+ struct rte_eth_dev_owner owner; /**< The port owner. */
+ uint16_t representor_id;
+ /**< Switch-specific identifier.
+ * Valid if RTE_ETH_DEV_REPRESENTOR in dev_flags.
+ */
+ uint16_t backer_port_id;
+ /**< Port ID of the backing device.
+ * This device will be used to query representor
+ * info and calculate representor IDs.
+ * Valid if RTE_ETH_DEV_REPRESENTOR in dev_flags.
+ */
+
+ pthread_mutex_t flow_ops_mutex; /**< rte_flow ops mutex. */
+ uint64_t reserved_64s[4]; /**< Reserved for future fields */
+ void *reserved_ptrs[4]; /**< Reserved for future fields */
+} __rte_cache_aligned;
+
+/**
+ * @internal
+ * The pool of *rte_eth_dev* structures. The size of the pool
+ * is configured at compile-time in the <rte_ethdev.c> file.
+ */
+extern struct rte_eth_dev rte_eth_devices[];
+