How to pass parameters .comp file

Hello,
I am developing a driver to connect a device to linuxcnc via ethernet, I would like to pass the IP address as a parameter but I can't find the correct way to read the parameters in the EXTRA_SETUP() function of the .comp file, the driver is a realtime object

Can help me?
Thanks
 

The IP address is a 32 bit number internally, so you should be able to pass it as an unsigned long parameter. you would need to convert 192.168.1.1 to 4 bytes in hex, then use setp

I know it, thanks, my problem is upstream  I can't find where it is explained how to pass the parameters 
 

This example in the docs is similar to what you want
linuxcnc.org/docs/stable/html/hal/comp.html#_out8