transmit
result = sc->transmit(sc, byte_count);
result = sc->transmit(sc, sizeof(cmd));
sc->transmit(sc, sizeof(save_cmd));
int (*transmit)(struct tpm_sc *, size_t);
sc->transmit = tpmcrb_transmit;
sc->transmit = tpmtis_transmit;
transmit(&p);
transmit(fd, value(EOFWRITE), NULL);
transmit(fd, "\04", line);
static void transmit(FILE *, char *, char *);