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Hi There

Does Wireshark/WinPCAP capture and show the checksum offload info from the out-of-band data?

Thanks Arun

asked 12 Oct '10, 10:22

Arun's gravatar image

accept rate: 0%

Hi Arun - can you be a bit more specific regarding which out-of-band data you are interested in? If the out-of-band data is carried in a packet and it is passed up to Wireshark, then you should be able to see it. There is some out-of-band data that does not actually cross the network, but is used between a driver and protocol stack, hence the question for clarification.

(12 Oct '10, 21:20) lchappell ♦


Thanks for the quick response. Sorry I should have been more clear. This is about the out-of-band data used between NIC driver and protocol stack. Specifically I want to find out if a Checksum offloading adapter/driver said good checksum or bad checksum for an incoming packet.

Thanks Arun

(12 Oct '10, 22:15) Arun

I'm going to guess a big No on this one. Dropped packet stats may be recorded by the driver somewhere - but those communications are probably not seen by wireshark. Its kind of against the point to have an offloading NIC report back to the CPU when it drops a packet...

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answered 13 Oct '10, 11:01

GeonJay's gravatar image

accept rate: 5%

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question asked: 12 Oct '10, 10:22

question was seen: 2,715 times

last updated: 13 Oct '10, 11:01

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