If anyone is looking to use RSS_FLOW_CONTROL (in 11.50FC8 and 11.70) there is currently one restriction that I uncovered that has been entered as a defect.

 

When you set the values for RSS_FLOW_CONTROL currently the values have to be under 2 gig due to a limitation in the way it was implemented. 

I came across the issue when I tried to set RSS_FLOW_CONTROL to "40G,1M", it actually internally had turned off RSS_FLOW_CONTROL because of how it interpreted it.

 

So be aware when setting RSS_FLOW_CONTROL.