UDP bad checksum error for packets sent by my DPDK application

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UDP bad checksum error for packets sent by my DPDK application

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Hi, I am working with Intel 82599 VF.We have used DPDK v1.7 and RHEL 6.2.On the host end we have ixgbe driver and on the guest igb_uio driver.Iam seeing "UDP: bad checksum" messages for the packets sent by my DPDK application to a socket on a remote machine.A capture external to my VMs show that in the failing case Tx UDP checksum is incorrect. ethtool output on the port shows tx-checksumming on.Can the UDP checksum error be related to Hardware checksum offloading. Any thoughts? What else needs to be checked? Best Regards, Anupama

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