rtl8139c and flow control

Hello,

I want to enable the flow control for a rtl8139 card ("C" chip)
under Linux, and using the "options eth0" line from modules.conf.

However, I was not able to find the command. The card is working
now ok at 100mbps/full, and the switch do have flow control
as many other features (vlan, priority...). This same card is
working ok with FCC from Windows machines.

Anyone knows if posible and the parameter?

By the way.. is there out some full listing for the rtl8139.o
driver options? Actually using latest 2.2.x kernel series.

Thanks!