mpt_recv_handshake_reply
error = mpt_recv_handshake_reply(mpt, sizeof (*freplp), freplp);
error = mpt_recv_handshake_reply(mpt, sizeof (*freplp), freplp);
error = mpt_recv_handshake_reply(mpt, sizeof reply, &reply);
int mpt_recv_handshake_reply(mpt_softc_t *, size_t, void *);