1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2017 Intel Corporation
5 #ifndef _RTE_ETHDEV_CORE_H_
6 #define _RTE_ETHDEV_CORE_H_
11 * RTE Ethernet Device internal header.
13 * This header contains internal data types. But they are still part of the
14 * public API because they are used by inline functions in the published API.
16 * Applications should not use these directly.
20 struct rte_eth_dev_callback;
21 /** @internal Structure to keep track of registered callbacks */
22 TAILQ_HEAD(rte_eth_dev_cb_list, rte_eth_dev_callback);
26 typedef uint16_t (*eth_rx_burst_t)(void *rxq,
27 struct rte_mbuf **rx_pkts,
29 /**< @internal Retrieve input packets from a receive queue of an Ethernet device. */
31 typedef uint16_t (*eth_tx_burst_t)(void *txq,
32 struct rte_mbuf **tx_pkts,
34 /**< @internal Send output packets on a transmit queue of an Ethernet device. */
36 typedef uint16_t (*eth_tx_prep_t)(void *txq,
37 struct rte_mbuf **tx_pkts,
39 /**< @internal Prepare output packets on a transmit queue of an Ethernet device. */
42 typedef uint32_t (*eth_rx_queue_count_t)(struct rte_eth_dev *dev,
43 uint16_t rx_queue_id);
44 /**< @internal Get number of used descriptors on a receive queue. */
46 typedef int (*eth_rx_descriptor_done_t)(void *rxq, uint16_t offset);
47 /**< @internal Check DD bit of specific RX descriptor */
49 typedef int (*eth_rx_descriptor_status_t)(void *rxq, uint16_t offset);
50 /**< @internal Check the status of a Rx descriptor */
52 typedef int (*eth_tx_descriptor_status_t)(void *txq, uint16_t offset);
53 /**< @internal Check the status of a Tx descriptor */
58 * Structure used to hold information about the callbacks to be called for a
61 struct rte_eth_rxtx_callback {
62 struct rte_eth_rxtx_callback *next;
64 rte_rx_callback_fn rx;
65 rte_tx_callback_fn tx;
72 * The generic data structure associated with each ethernet device.
74 * Pointers to burst-oriented packet receive and transmit functions are
75 * located at the beginning of the structure, along with the pointer to
76 * where all the data elements for the particular device are stored in shared
77 * memory. This split allows the function pointer and driver data to be per-
78 * process, while the actual configuration data for the device is shared.
81 eth_rx_burst_t rx_pkt_burst; /**< Pointer to PMD receive function. */
82 eth_tx_burst_t tx_pkt_burst; /**< Pointer to PMD transmit function. */
83 eth_tx_prep_t tx_pkt_prepare; /**< Pointer to PMD transmit prepare function. */
85 eth_rx_queue_count_t rx_queue_count; /**< Get the number of used RX descriptors. */
86 eth_rx_descriptor_done_t rx_descriptor_done; /**< Check rxd DD bit. */
87 eth_rx_descriptor_status_t rx_descriptor_status; /**< Check the status of a Rx descriptor. */
88 eth_tx_descriptor_status_t tx_descriptor_status; /**< Check the status of a Tx descriptor. */
91 * Next two fields are per-device data but *data is shared between
92 * primary and secondary processes and *process_private is per-process
93 * private. The second one is managed by PMDs if necessary.
95 struct rte_eth_dev_data *data; /**< Pointer to device data. */
96 void *process_private; /**< Pointer to per-process device data. */
97 const struct eth_dev_ops *dev_ops; /**< Functions exported by PMD */
98 struct rte_device *device; /**< Backing device */
99 struct rte_intr_handle *intr_handle; /**< Device interrupt handle */
100 /** User application callbacks for NIC interrupts */
101 struct rte_eth_dev_cb_list link_intr_cbs;
103 * User-supplied functions called from rx_burst to post-process
104 * received packets before passing them to the user
106 struct rte_eth_rxtx_callback *post_rx_burst_cbs[RTE_MAX_QUEUES_PER_PORT];
108 * User-supplied functions called from tx_burst to pre-process
109 * received packets before passing them to the driver for transmission.
111 struct rte_eth_rxtx_callback *pre_tx_burst_cbs[RTE_MAX_QUEUES_PER_PORT];
112 enum rte_eth_dev_state state; /**< Flag indicating the port state */
113 void *security_ctx; /**< Context for security ops */
115 uint64_t reserved_64s[4]; /**< Reserved for future fields */
116 void *reserved_ptrs[4]; /**< Reserved for future fields */
117 } __rte_cache_aligned;
119 struct rte_eth_dev_sriov;
120 struct rte_eth_dev_owner;
124 * The data part, with no function pointers, associated with each ethernet device.
126 * This structure is safe to place in shared memory to be common among different
127 * processes in a multi-process configuration.
129 struct rte_eth_dev_data {
130 char name[RTE_ETH_NAME_MAX_LEN]; /**< Unique identifier name */
132 void **rx_queues; /**< Array of pointers to RX queues. */
133 void **tx_queues; /**< Array of pointers to TX queues. */
134 uint16_t nb_rx_queues; /**< Number of RX queues. */
135 uint16_t nb_tx_queues; /**< Number of TX queues. */
137 struct rte_eth_dev_sriov sriov; /**< SRIOV data */
140 /**< PMD-specific private data.
141 * @see rte_eth_dev_release_port()
144 struct rte_eth_link dev_link; /**< Link-level information & status. */
145 struct rte_eth_conf dev_conf; /**< Configuration applied to device. */
146 uint16_t mtu; /**< Maximum Transmission Unit. */
147 uint32_t min_rx_buf_size;
148 /**< Common RX buffer size handled by all queues. */
150 uint64_t rx_mbuf_alloc_failed; /**< RX ring mbuf allocation failures. */
151 struct rte_ether_addr *mac_addrs;
152 /**< Device Ethernet link address.
153 * @see rte_eth_dev_release_port()
155 uint64_t mac_pool_sel[ETH_NUM_RECEIVE_MAC_ADDR];
156 /**< Bitmap associating MAC addresses to pools. */
157 struct rte_ether_addr *hash_mac_addrs;
158 /**< Device Ethernet MAC addresses of hash filtering.
159 * @see rte_eth_dev_release_port()
161 uint16_t port_id; /**< Device [external] port identifier. */
164 uint8_t promiscuous : 1, /**< RX promiscuous mode ON(1) / OFF(0). */
165 scattered_rx : 1, /**< RX of scattered packets is ON(1) / OFF(0) */
166 all_multicast : 1, /**< RX all multicast mode ON(1) / OFF(0). */
167 dev_started : 1, /**< Device state: STARTED(1) / STOPPED(0). */
168 lro : 1; /**< RX LRO is ON(1) / OFF(0) */
169 uint8_t rx_queue_state[RTE_MAX_QUEUES_PER_PORT];
170 /**< Queues state: HAIRPIN(2) / STARTED(1) / STOPPED(0). */
171 uint8_t tx_queue_state[RTE_MAX_QUEUES_PER_PORT];
172 /**< Queues state: HAIRPIN(2) / STARTED(1) / STOPPED(0). */
173 uint32_t dev_flags; /**< Capabilities. */
174 int numa_node; /**< NUMA node connection. */
175 struct rte_vlan_filter_conf vlan_filter_conf;
176 /**< VLAN filter configuration. */
177 struct rte_eth_dev_owner owner; /**< The port owner. */
178 uint16_t representor_id;
179 /**< Switch-specific identifier.
180 * Valid if RTE_ETH_DEV_REPRESENTOR in dev_flags.
183 uint64_t reserved_64s[4]; /**< Reserved for future fields */
184 void *reserved_ptrs[4]; /**< Reserved for future fields */
185 } __rte_cache_aligned;
189 * The pool of *rte_eth_dev* structures. The size of the pool
190 * is configured at compile-time in the <rte_ethdev.c> file.
192 extern struct rte_eth_dev rte_eth_devices[];
194 #endif /* _RTE_ETHDEV_CORE_H_ */