How do we pass module options to modules that dracut loads during boot time? RHEL 6

Issue

• How do we pass module options to modules that dracut loads during boot time?

• For example in /etc/modprobe.d/libmlx4.conf we have added the option:

  options mlx4_core log_mtts_per_seg=5
  

• When dracut brings up ib0, and loads the mlx4_core module, it does not yet see this option.

• I don't see anything obvious in dracut man page on where to put a file like modprobe.conf to put these types of things.
• We often set module options for network cards to not  do tcp offloading and things like that so I am looking for the generic  way to do this properly within dracut.