Linux USB Gadget Devices for Bulk IN and OUT transfer

Hi,
I am trying to enumerate USB as peripheral and have come across gadget drivers. I just need 2 USB 3.0 bulk endpoints(IN and OUT) to implement a proprietary protocol. I really want to pick one from the existing gadgets unless the functionality which I am after is not possible

Note: I have tried g_serial(modprobe g_serial use_acm=0) but it involves the console.

Also, does GadgetFS support USB 3.0?

Thanks and Regards
Bharat Kumar