You are advised to refer to the AMD Solarflare net driver release notes for details of all limitations.
Per Port Configuration
All PFs on a physical port have the same expansion ROM configuration where PXE/UEFI settings are stored. This means that either all PFs PXE boot, or no PFs attempt to PXE boot. You should ensure that a DHCP server responds to the first MAC address.
PTP
PTP can only run on the primary physical function of each physical port and is not supported on VF interfaces.