Function ngbe_dev_start

dpdk/drivers/net/ngbe/ngbe_ethdev.c:953–1146

* Configure device link speed and setup link. * It returns 0 on success. */

 * It returns 0 on success.
 */
static int
ngbe_dev_start(struct rte_eth_dev *dev)
{
	struct ngbe_hw *hw = ngbe_dev_hw(dev);
	struct ngbe_hw_stats *hw_stats = NGBE_DEV_STATS(dev);
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
	struct rte_intr_handle *intr_handle = pci_dev->intr_handle;
	uint32_t intr_vector = 0;
	int err;
	bool link_up = false, negotiate = false;
	uint32_t speed = 0;
	uint32_t allowed_speeds = 0;
	int mask = 0;
	int status;
	uint32_t *link_speeds;

	PMD_INIT_FUNC_TRACE();

	/* disable uio/vfio intr/eventfd mapping */
	rte_intr_disable(intr_handle);

	/* stop adapter */
	hw->adapter_stopped = 0;

	/* reinitialize adapter, this calls reset and start */
	hw->nb_rx_queues = dev->data->nb_rx_queues;
	hw->nb_tx_queues = dev->data->nb_tx_queues;
	status = ngbe_pf_reset_hw(hw);
	if (status != 0)
		return -1;
	hw->mac.start_hw(hw);
	hw->mac.get_link_status = true;

	ngbe_set_pcie_master(hw, true);

	/* configure PF module if SRIOV enabled */
	ngbe_pf_host_configure(dev);

	ngbe_dev_phy_intr_setup(dev);

	/* check and configure queue intr-vector mapping */
	if ((rte_intr_cap_multiple(intr_handle) ||
	     !RTE_ETH_DEV_SRIOV(dev).active) &&
	    dev->data->dev_conf.intr_conf.rxq != 0) {
		intr_vector = dev->data->nb_rx_queues;
		if (rte_intr_efd_enable(intr_handle, intr_vector))
			return -1;
	}

	if (rte_intr_dp_is_en(intr_handle)) {
		if (rte_intr_vec_list_alloc(intr_handle, "intr_vec",
						   dev->data->nb_rx_queues)) {
			PMD_INIT_LOG(ERR,
				     "Failed to allocate %d rx_queues intr_vec",
				     dev->data->nb_rx_queues);
			return -ENOMEM;
		}
	}