Hi,
I just completed a network driver for a 100Mbps controller. for
performance measurement, when I run netperf and netserver with
UDP_STREAM, I get 98Mbps. But with TCP, I get 0.03 Mbps.
I think tcp checksumming fails a lot.
How do I go about finding out the problem? What are the tools that helps
me to diagnose it and peep into the network subsystem in linux?
I would like to get info on
1. how many packets made into stack?
2. of them, how many failed checksum?
3. How many did the application receive?
..etc.
netstat -s or iptstate did not tell me all these.
Thanks,
Om.
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