Function ngbe_dev_stop

dpdk/drivers/net/ngbe/ngbe_ethdev.c:1151–1216

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

 * Stop device: disable rx and tx functions to allow for reconfiguring.
 */
static int
ngbe_dev_stop(struct rte_eth_dev *dev)
{
	struct rte_eth_link link;
	struct ngbe_adapter *adapter = ngbe_dev_adapter(dev);
	struct ngbe_hw *hw = ngbe_dev_hw(dev);
	struct ngbe_vf_info *vfinfo = *NGBE_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;

	if (hw->adapter_stopped)
		goto out;

	PMD_INIT_FUNC_TRACE();

	if (hw->gpio_ctl) {
		/* gpio0 is used to power on/off control*/
		wr32(hw, NGBE_GPIODATA, NGBE_GPIOBIT_0);
	}

	/* disable interrupts */
	ngbe_disable_intr(hw);

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

	/* stop adapter */
	ngbe_stop_hw(hw);

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

	ngbe_dev_clear_queues(dev);

	/* Clear stored conf */
	dev->data->scattered_rx = 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,
					   ngbe_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);

	ngbe_set_pcie_master(hw, true);

	adapter->rss_reta_updated = 0;

	hw->adapter_stopped = true;