+
+/**
+ * Enable IEEE1588/802.1AS timestamping for an Ethernet device.
+ *
+ * @param port_id
+ * The port identifier of the Ethernet device.
+ *
+ * @return
+ * - 0: Success.
+ * - -ENODEV: The port ID is invalid.
+ * - -ENOTSUP: The function is not supported by the Ethernet driver.
+ */
+extern int rte_eth_timesync_enable(uint8_t port_id);
+
+/**
+ * Disable IEEE1588/802.1AS timestamping for an Ethernet device.
+ *
+ * @param port_id
+ * The port identifier of the Ethernet device.
+ *
+ * @return
+ * - 0: Success.
+ * - -ENODEV: The port ID is invalid.
+ * - -ENOTSUP: The function is not supported by the Ethernet driver.
+ */
+extern int rte_eth_timesync_disable(uint8_t port_id);
+
+/**
+ * Read an IEEE1588/802.1AS RX timestamp from an Ethernet device.
+ *
+ * @param port_id
+ * The port identifier of the Ethernet device.
+ * @param timestamp
+ * Pointer to the timestamp struct.
+ * @param flags
+ * Device specific flags. Used to pass the RX timesync register index to
+ * i40e. Unused in igb/ixgbe, pass 0 instead.
+ *
+ * @return
+ * - 0: Success.
+ * - -EINVAL: No timestamp is available.
+ * - -ENODEV: The port ID is invalid.
+ * - -ENOTSUP: The function is not supported by the Ethernet driver.
+ */
+extern int rte_eth_timesync_read_rx_timestamp(uint8_t port_id,
+ struct timespec *timestamp,
+ uint32_t flags);
+
+/**
+ * Read an IEEE1588/802.1AS TX timestamp from an Ethernet device.
+ *
+ * @param port_id
+ * The port identifier of the Ethernet device.
+ * @param timestamp
+ * Pointer to the timestamp struct.
+ *
+ * @return
+ * - 0: Success.
+ * - -EINVAL: No timestamp is available.
+ * - -ENODEV: The port ID is invalid.
+ * - -ENOTSUP: The function is not supported by the Ethernet driver.
+ */
+extern int rte_eth_timesync_read_tx_timestamp(uint8_t port_id,
+ struct timespec *timestamp);