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Hi,</div>
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I am trying to use dpdk 23.11 on a VMware virtual machine for a forwarding application. My quest OS is Ubuntu 22.04 LTS and I am using the e1000 network card. I realized checksums of the processed packets are not correct when using checksum offload feature
of DPDK. I suspect that checksums are stay same when packets are changed.</div>
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I also tried using vmxnet3 NIC in virtual machine but I got the same result. I was using same code on a Mellanox card before on a real hardware and it was working fine. When I calculated the checksum in the code instead of offloading it is working, but I would
like to use the offloading feature. What do you think could be the cause for this problem.</div>
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The configuration I am using for checksum offload is:</div>
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struct rte_eth_conf port_conf = {</div>
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.rxmode = {</div>
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.mq_mode = RTE_ETH_MQ_RX_RSS,</div>
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},</div>
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.txmode = {</div>
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.offloads =</div>
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RTE_ETH_TX_OFFLOAD_IPV4_CKSUM |</div>
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RTE_ETH_TX_OFFLOAD_UDP_CKSUM |</div>
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RTE_ETH_TX_OFFLOAD_TCP_CKSUM ,</div>
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.mq_mode = RTE_ETH_MQ_TX_NONE,</div>
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},</div>
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For vmxnet3 however I didn't use RTE_ETH_TX_OFFLOAD_IPV4_CKSUM because apparently that driver is not supporting IPv4 offload.</div>
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Thanks</div>
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Best,</div>
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Aisenur</div>
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