Search code examples
linuxtestingdriverlinux-device-driverethernet

Is there a Linux driver for testing transport protocols?

I am trying to test some communication protocols, both commercial and homegrown. I would like to find an Ethernet driver that allows me to degrade the channel in a controllable fashion. For instance

  1. specify a packet drop rate.
  2. modulate the bandwidth.
  3. modulate the RTT, independent of the apparent bandwidth

This may all be done performing "tricks" to the real driver's input queue. So I would simply load the driver pointing it at target existing channel and perform my tests on the new port. Anyone know if such a driver exists?

Solution

  • Netem does what you want at ip level.

    http://www.linuxfoundation.org/collaborate/workgroups/networking/netem