Does anyone know if the Gentoo stuff that has been ported supports the
wireless ifconfig options ?
I think you don't get it. The "options" are nothing more than communication with a driver. The driver can accept virtually anything but of course, there has been some conventions defined. The point is, you can't support this in ifconfig unless you know how your kernel API looks like. And making just dummy functions pretending they understand some specific wireless extensions... that makes no sense at all.
First a device, then a driver, then a kernel API, then a ifconfig change.
(I might be wrong of course but since we've been developing our very own network wifi driver for QNX, I can say ifconfig wasn't any of our concern).