启用每个端口和每个队列的DEV_TX_OFFLOAD_MULTI_SEGS卸载

Question

我想启用每个端口卸载功能，以使用DEV_TX_OFFLOAD_MULTI_SEGS为多个段设置TX卸载功能。 UDP数据包因错误UDP长度> IP有效负载长度错误而被丢弃，如wireshark捕获所示。 我升级到DPDK 18.08后，会看到此问题。 因此，我想设置每个端口的卸载DEV_TX_OFFLOAD_MULTI_SEGS以允许分割大数据包。

尝试设置上述卸载时，出现以下错误。

Ethdev port_id = 0 tx_queue_id = 0，新添加的卸载0x9f3e55必须在rte_eth_tx_queue_setup（）中的队列前卸载功能0x0之内

请让我知道我要去哪里哪里以及如何正确设置卸载DEV_TX_OFFLOAD_MULTI_SEGS。

static const struct rte_eth_txconf tx_conf = {
    .tx_thresh = {
        .pthresh = TX_PTHRESH,
        .hthresh = TX_HTHRESH,
        .wthresh = TX_WTHRESH,
    },
    .tx_free_thresh = 0, 
    .tx_rs_thresh = 0, 
};


static struct rte_eth_conf port_conf = {
        .rxmode = {
                .mq_mode = ETH_MQ_RX_RSS,
                .max_rx_pkt_len = JUMBO_FRAME_MAX_SIZE,
                .split_hdr_size = 0,
                .offloads = (DEV_RX_OFFLOAD_CHECKSUM |
                             DEV_RX_OFFLOAD_CRC_STRIP),
        },
        .rx_adv_conf = {
                .rss_conf = {
                        .rss_key = NULL,
                        .rss_hf = ETH_RSS_TCP| ETH_RSS_UDP |
                             ETH_RSS_TCP | ETH_RSS_SCTP,
                },
        },
        .txmode = {
                .mq_mode = ETH_MQ_TX_NONE,
        },
};


 struct rte_eth_txconf *tx_conf;
 struct rte_eth_conf local_port_conf = port_conf;
 if(dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MULTI_SEGS)
        {

           local_port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;
        }
 ret = rte_eth_dev_configure(port, nbqueue, nbqueue, &local_port_conf);
 rte_eth_dev_info_get(port, &dev_info);
        tx_conf = &dev_info.default_txconf;
        tx_conf->offloads = local_port_conf.txmode.offloads;

        ret = rte_eth_tx_queue_setup(port, queue, RTE_TEST_TX_DESC_DEFAULT, master_socket_id, &tx_conf);