Function ngbe_dev_interrupt_action

dpdk/drivers/net/ngbe/ngbe_ethdev.c:2248–2283

* It executes link_update after knowing an interrupt occurred. * * @param dev * Pointer to struct rte_eth_dev. * * @return * - On success, zero. * - On failure, a negative value. */

 *  - On failure, a negative value.
 */
static int
ngbe_dev_interrupt_action(struct rte_eth_dev *dev)
{
	struct ngbe_interrupt *intr = ngbe_dev_intr(dev);

	PMD_DRV_LOG(DEBUG, "intr action type %d", intr->flags);

	if (intr->flags & NGBE_FLAG_MAILBOX) {
		ngbe_pf_mbx_process(dev);
		intr->flags &= ~NGBE_FLAG_MAILBOX;
	}

	if (intr->flags & NGBE_FLAG_NEED_LINK_UPDATE) {
		struct rte_eth_link link;

		/*get the link status before link update, for predicting later*/
		rte_eth_linkstatus_get(dev, &link);

		ngbe_dev_link_update(dev, 0);
		intr->flags &= ~NGBE_FLAG_NEED_LINK_UPDATE;
		ngbe_dev_link_status_print(dev);
		if (dev->data->dev_link.link_speed != link.link_speed)
			rte_eth_dev_callback_process(dev,
				RTE_ETH_EVENT_INTR_LSC, NULL);
	}

	if (intr->flags & NGBE_FLAG_OVERHEAT) {
		ngbe_dev_overheat(dev);
		intr->flags &= ~NGBE_FLAG_OVERHEAT;
	}

	PMD_DRV_LOG(DEBUG, "enable intr immediately");
	ngbe_enable_intr(dev);

	return 0;
}

/**
 * Interrupt handler triggered by NIC  for handling