I would like to enable per port offloading to set TX offloading for multiple segments using DEV_TX_OFFLOAD_MULTI_SEGS. UDP packets were getting dropped with error Bad UDP length > IP payload length as seen in the wireshark capture. This issue is seen after I upgraded to DPDK 18.08. Hence I would like to set the offload DEV_TX_OFFLOAD_MULTI_SEGS per port to allow segmenation of big packets.
I am getting the below error when I try to set the above offload. Ethdev port_id=0 tx_queue_id=0, new added offloads 0x9f3e55 must be within pre-queue offload capabilities 0x0 in rte_eth_tx_queue_setup() Please let me know where I am going wrong and how do I set the offload DEV_TX_OFFLOAD_MULTI_SEGS correctly. 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);