From: Rahul Shah <rahulshah@microsoft.com>
To: "dev@dpdk.org" <dev@dpdk.org>
Subject: TCP checksum calculation after GSO
Date: Sat, 27 Aug 2022 00:11:18 +0000 [thread overview]
Message-ID: <BL1PR21MB3088352C7E410E633B0F6F1BB1749@BL1PR21MB3088.namprd21.prod.outlook.com> (raw)
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Hi,
I see that in the testpmd csum mode (csumonly.c), TCP checksum is not calculated by the code after segmenting the packet. I get TCP checksum error when I capture the segmented packets in the Wireshark. Is this expected or an error.
There is a 'update_tcp_header' function which only clears the TCP flags but does not recalculate the checksum
Thanks,
Rahul
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