Ok....may be I shall list it step by step on what to do:
mount -t debugfs none_debugs /sys/kernel/debug
(modprobe usbmon was not nec for me, because my kernel is compile CONFIG_USB_MON=y)
cat /proc/bus/usb/devices
Look the device, eg, for me I look for my USB mouse. Next identify the BUS nos.
cd /sys/kernel/debug/usbmon
cat BUSnos{t, u, s}
And everytime I shifted my mouse, the following output:
f7b1aa00 608573179 S Ii:4:002:1 -115:8 4 <
f7b1aa00 608709207 C Ii:4:002:1 0:8 4 = 0000ff00
f7b1aa00 608709235 S Ii:4:002:1 -115:8 4 <
f7b1aa00 608717200 C Ii:4:002:1 0:8 4 = 00000100
f7b1aa00 608717218 S Ii:4:002:1 -115:8 4 <
The data format of the above is explained in Docmentation/usb/usbmon.txt.
The last part is the data, and for your case, to look at the TCP/IP data, it should be looking at the last part.
