Function txgbe_dev_close

dpdk/drivers/net/txgbe/txgbe_ethdev.c:2049–2131

* Reset and stop device. */

 * Reset and stop device.
 */
static int
txgbe_dev_close(struct rte_eth_dev *dev)
{
	struct txgbe_hw *hw = TXGBE_DEV_HW(dev);
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
	struct rte_intr_handle *intr_handle = pci_dev->intr_handle;
	int retries = 0;
	int ret;

	PMD_INIT_FUNC_TRACE();

	if (rte_eal_process_type() != RTE_PROC_PRIMARY)
		return 0;

	txgbe_pf_reset_hw(hw);

	ret = txgbe_dev_stop(dev);

	/* Let firmware take over control of hardware */
	wr32m(hw, TXGBE_PORTCTL, TXGBE_PORTCTL_DRVLOAD, 0);

	txgbe_dev_free_queues(dev);

	txgbe_set_pcie_master(hw, false);

	/* reprogram the RAR[0] in case user changed it. */
	txgbe_set_rar(hw, 0, hw->mac.addr, 0, true);

	/* Unlock any pending hardware semaphore */
	txgbe_swfw_lock_reset(hw);

	/* disable uio intr before callback unregister */
	rte_intr_disable(intr_handle);

	do {
		ret = rte_intr_callback_unregister(intr_handle,
				txgbe_dev_interrupt_handler, dev);
		if (ret >= 0 || ret == -ENOENT) {
			break;
		} else if (ret != -EAGAIN) {
			PMD_INIT_LOG(ERR,
				"intr callback unregister failed: %d",
				ret);
		}
		rte_delay_ms(100);
	} while (retries++ < (10 + TXGBE_LINK_UP_TIME));

	/* cancel all alarm handler before remove dev */
	rte_eal_alarm_cancel(txgbe_dev_interrupt_delayed_handler, dev);
	rte_eal_alarm_cancel(txgbe_dev_detect_sfp, dev);
	rte_eal_alarm_cancel(txgbe_dev_setup_link_alarm_handler, dev);

	/* uninitialize PF if max_vfs not zero */
	txgbe_pf_host_uninit(dev);

	rte_free(dev->data->mac_addrs);
	dev->data->mac_addrs = NULL;