Function vhost_dev_csum_configure

dpdk/drivers/net/vhost/rte_eth_vhost.c:284–313

}

static void
vhost_dev_csum_configure(struct rte_eth_dev *eth_dev)
{
	struct pmd_internal *internal = eth_dev->data->dev_private;
	const struct rte_eth_rxmode *rxmode = &eth_dev->data->dev_conf.rxmode;
	const struct rte_eth_txmode *txmode = &eth_dev->data->dev_conf.txmode;

	internal->rx_sw_csum = false;
	internal->tx_sw_csum = false;

	/* SW checksum is not compatible with legacy mode */
	if (!(internal->flags & RTE_VHOST_USER_NET_COMPLIANT_OL_FLAGS))
		return;

	if (internal->features & (1ULL << VIRTIO_NET_F_CSUM)) {
		if (!(rxmode->offloads &
				(RTE_ETH_RX_OFFLOAD_UDP_CKSUM | RTE_ETH_RX_OFFLOAD_TCP_CKSUM))) {
			VHOST_LOG(NOTICE, "Rx csum will be done in SW, may impact performance.\n");
			internal->rx_sw_csum = true;
		}
	}

	if (!(internal->features & (1ULL << VIRTIO_NET_F_GUEST_CSUM))) {
		if (txmode->offloads &
				(RTE_ETH_TX_OFFLOAD_UDP_CKSUM | RTE_ETH_TX_OFFLOAD_TCP_CKSUM)) {
			VHOST_LOG(NOTICE, "Tx csum will be done in SW, may impact performance.\n");
			internal->tx_sw_csum = true;
		}
	}
}

static void
vhost_dev_tx_sw_csum(struct rte_mbuf *mbuf)