UPF not refactored in go

[sumitsimplex]

Hi there,

I was just wondering what could be the reason that UPF solely is left out in c where all other NFs are in go?
P.S. I am newbee to free5GC, no idea on inner functioning (each NF internal architecture), is there any document I can refer to get those details?

[francozamp2]

The reason I assume (I'm not part of the project, just a user) is the need to interact with the GTP tunnel in kernal space, via a library written in C. This requirement might have forced the whole UPF code to be C as well.
F.