Trace Control for Netem: Emulate network properties such as long range 
dependency and self-similarity of cross-traffic.

user space (iproute2):
The directory tc/netem was split in two parts, one containing the original 
distribution tables and the other the tools to generate trace files as well as 
the program responsible for reading the delay values from the trace file and 
sending them to the kernel (called flowseed).

If the trace option is set, netem initializes the kernel and starts the 
flowseedprocess. The flowseedprocess does not
send data to the kernel until the registration is completed. The data is sent 
to the kernel module via configfs. For each qdisc applied, a new directory (in 
/config/tcn/) is created. The write returns when the kernel needs new data, or 
when the corresponding qdisc was deleted. In the first case new data is sent 
and in the latter case the flowseedprocess terminates himself.

Signed-off-by: Rainer Baumann <[EMAIL PROTECTED]>

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Patch for iproute2-2.6.16-060323: http://tcn.hypert.net/tcn_iproute2.patch

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