which part of data in ethernet frame should be passed to CRC generator?

after pass payload to CRC generator, wireshark do not receive any ethernet frame
i guess wrong, i do not know where to check, i am afraid that ethernet port in PC side drop the frame from FPGA when CRC is wrong

any other methods to see whether it send or not no matter CRC is wrong or not?

which data should be passed to CRC generators, whole ethernet frame? if so, does it include preamble?