Function rte_eth_linkstatus_set

dpdk/lib/ethdev/ethdev_driver.h:1654–1665

* @internal * Atomically set the link status for the specific device. * It is for use by DPDK device driver use only. * User applications should not call it * * @param dev * Pointer to struct rte_eth_dev. * @param link * New link status value. * @return * Same convention as eth_link_update operation. * 0 if link up status has changed * -1 if link up status was unchanged */

 *  -1  if link up status was unchanged
 */
static inline int
rte_eth_linkstatus_set(struct rte_eth_dev *dev,
		       const struct rte_eth_link *new_link)
{
	struct rte_eth_link old_link;

	old_link.val64 = rte_atomic_exchange_explicit(&dev->data->dev_link.val64,
						      new_link->val64,
						      rte_memory_order_seq_cst);

	return (old_link.link_status == new_link->link_status) ? -1 : 0;
}

/**
 * @internal