Function txgbe_dev_stop

dpdk/drivers/net/txgbe/txgbe_ethdev.c:1922–2002

* Stop device: disable rx and tx functions to allow for reconfiguring. */

 * Stop device: disable rx and tx functions to allow for reconfiguring.
 */
static int
txgbe_dev_stop(struct rte_eth_dev *dev)
{
	struct rte_eth_link link;
	struct txgbe_adapter *adapter = TXGBE_DEV_ADAPTER(dev);
	struct txgbe_hw *hw = TXGBE_DEV_HW(dev);
	struct txgbe_vf_info *vfinfo = *TXGBE_DEV_VFDATA(dev);
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
	struct rte_intr_handle *intr_handle = pci_dev->intr_handle;
	int vf;
	struct txgbe_tm_conf *tm_conf = TXGBE_DEV_TM_CONF(dev);

	if (hw->adapter_stopped)
		goto out;

	PMD_INIT_FUNC_TRACE();

	rte_eal_alarm_cancel(txgbe_dev_detect_sfp, dev);
	txgbe_dev_wait_setup_link_complete(dev, 0);

	/* disable interrupts */
	txgbe_disable_intr(hw);

	/* workaround for GPIO intr lost when mng_veto bit is set */
	if (txgbe_check_reset_blocked(hw))
		txgbe_reinit_gpio_intr(hw);

	/* reset the NIC */
	txgbe_pf_reset_hw(hw);
	hw->adapter_stopped = 0;

	/* stop adapter */
	txgbe_stop_hw(hw);

	for (vf = 0; vfinfo != NULL && vf < pci_dev->max_vfs; vf++)
		vfinfo[vf].clear_to_send = false;

	txgbe_dev_clear_queues(dev);

	/* Clear stored conf */
	dev->data->scattered_rx = 0;
	dev->data->lro = 0;

	/* Clear recorded link status */
	memset(&link, 0, sizeof(link));
	rte_eth_linkstatus_set(dev, &link);

	if (!rte_intr_allow_others(intr_handle))
		/* resume to the default handler */
		rte_intr_callback_register(intr_handle,
					   txgbe_dev_interrupt_handler,
					   (void *)dev);

	/* Clean datapath event and queue/vec mapping */
	rte_intr_efd_disable(intr_handle);
	rte_intr_vec_list_free(intr_handle);

	/* reset hierarchy commit */