Function rte_eth_rx_queue_setup

dpdk/lib/ethdev/rte_ethdev.c:2146–2361

}

int
rte_eth_rx_queue_setup(uint16_t port_id, uint16_t rx_queue_id,
		       uint16_t nb_rx_desc, unsigned int socket_id,
		       const struct rte_eth_rxconf *rx_conf,
		       struct rte_mempool *mp)
{
	int ret;
	uint64_t rx_offloads;
	uint32_t mbp_buf_size = UINT32_MAX;
	struct rte_eth_dev *dev;
	struct rte_eth_dev_info dev_info;
	struct rte_eth_rxconf local_conf;
	uint32_t buf_data_size;

	RTE_ETH_VALID_PORTID_OR_ERR_RET(port_id, -ENODEV);
	dev = &rte_eth_devices[port_id];

	if (rx_queue_id >= dev->data->nb_rx_queues) {
		RTE_ETHDEV_LOG(ERR, "Invalid Rx queue_id=%u\n", rx_queue_id);
		return -EINVAL;
	}

	if (*dev->dev_ops->rx_queue_setup == NULL)
		return -ENOTSUP;

	if (rx_conf != NULL &&
	   (rx_conf->reserved_64s[0] != 0 ||
	    rx_conf->reserved_64s[1] != 0 ||
	    rx_conf->reserved_ptrs[0] != NULL ||
	    rx_conf->reserved_ptrs[1] != NULL)) {
		RTE_ETHDEV_LOG(ERR, "Rx conf reserved fields not zero\n");
		return -EINVAL;
	}

	ret = rte_eth_dev_info_get(port_id, &dev_info);
	if (ret != 0)
		return ret;

	rx_offloads = dev->data->dev_conf.rxmode.offloads;
	if (rx_conf != NULL)
		rx_offloads |= rx_conf->offloads;

	/* Ensure that we have one and only one source of Rx buffers */
	if ((mp != NULL) +
	    (rx_conf != NULL && rx_conf->rx_nseg > 0) +
	    (rx_conf != NULL && rx_conf->rx_nmempool > 0) != 1) {
		RTE_ETHDEV_LOG(ERR,
			       "Ambiguous Rx mempools configuration\n");
		return -EINVAL;
	}

	if (mp != NULL) {
		/* Single pool configuration check. */
		ret = rte_eth_check_rx_mempool(mp, RTE_PKTMBUF_HEADROOM,
					       dev_info.min_rx_bufsize);
		if (ret != 0)
			return ret;