Function nfp_net_start

dpdk/drivers/net/nfp/nfp_ethdev.c:44–201

}

static int
nfp_net_start(struct rte_eth_dev *dev)
{
	int ret;
	uint16_t i;
	struct nfp_hw *hw;
	uint32_t new_ctrl;
	uint32_t update = 0;
	uint32_t cap_extend;
	uint32_t intr_vector;
	uint32_t ctrl_extend = 0;
	struct nfp_net_hw *net_hw;
	struct nfp_pf_dev *pf_dev;
	struct rte_eth_rxmode *rxmode;
	struct nfp_app_fw_nic *app_fw_nic;
	struct rte_pci_device *pci_dev = RTE_ETH_DEV_TO_PCI(dev);
	struct rte_intr_handle *intr_handle = pci_dev->intr_handle;

	net_hw = dev->data->dev_private;
	pf_dev = net_hw->pf_dev;
	app_fw_nic = NFP_PRIV_TO_APP_FW_NIC(pf_dev->app_fw_priv);
	hw = &net_hw->super;

	/* Disabling queues just in case... */
	nfp_net_disable_queues(dev);

	/* Enabling the required queues in the device */
	nfp_net_enable_queues(dev);

	/* Check and configure queue intr-vector mapping */
	if (dev->data->dev_conf.intr_conf.rxq != 0) {
		if (app_fw_nic->multiport) {
			PMD_INIT_LOG(ERR, "PMD rx interrupt is not supported "
					"with NFP multiport PF");
				return -EINVAL;
		}

		if (rte_intr_type_get(intr_handle) == RTE_INTR_HANDLE_UIO) {
			/*
			 * Better not to share LSC with RX interrupts.
			 * Unregistering LSC interrupt handler.
			 */
			rte_intr_callback_unregister(intr_handle,
					nfp_net_dev_interrupt_handler, (void *)dev);

			if (dev->data->nb_rx_queues > 1) {
				PMD_INIT_LOG(ERR, "PMD rx interrupt only "
						"supports 1 queue with UIO");
				return -EIO;
			}
		}

		intr_vector = dev->data->nb_rx_queues;
		if (rte_intr_efd_enable(intr_handle, intr_vector) != 0)
			return -1;

		nfp_configure_rx_interrupt(dev, intr_handle);
		update = NFP_NET_CFG_UPDATE_MSIX;