I am setting up some new filers in Cluster-Mode 8.2.1 and trying to set the ports flow control to be none but have found if you don't have a cable plugged in then you can not set this and get and error. Once the link is up it works fine but i want to pre-create the ifgroups and port settings before we plug into the switches.
I now know what you mean that you cannont set the flow control on a CNA. See article below:
"Flow control should normally be set to nonefor 10-GbE interfaces except for Converged Network Adapter (CNA) cards, where it cannot be disabled. If you disable flow control on the switch port, flow control is also disabled for devices such as CNAs"