HPI_VER
if (HPI_VER_MAJOR(header.version) != HPI_VER_MAJOR(HPI_VER)) {
header.version, HPI_VER);
if (header.version != HPI_VER) {
header.version, HPI_VER);
phr->u.s.version = HPI_VER >> 8; /* return major.minor */
phr->u.s.data = HPI_VER; /* return major.minor.release */