About Broadcom's VF in OPNsense

[Angriness8996]

Helleo everyone.
I want to move my main router/firewall to opnsense, but there is a problem about my NIC.
The NIC is "Dell X1KR4 Broadcom 57504 Quad Port 25GbE SFP28 OCP 3.0", and OPNsense runs as VM. When I passthrough the card PF to the OPNsense, and load if_bnxt.ko in /boot/loader.conf.local it works as it should. But pass the VF to the OPNsense with the same configure it won't work. The manual says card's VF should use the same driver as PF.
Is there some things I missed to configure the VF to work, or it is a driver problem?