S_SIZE
if (bcmp((void *)pxenv_p->Signature, S_SIZE("PXENV+"))) {
if (bcmp((void *)pxe_p->Signature, S_SIZE("!PXE"))) {
#define CXGBE_V_SIZE(x) ((x) << S_SIZE)
#define CXGBE_G_SIZE(x) (((x) >> S_SIZE) & CXGBE_M_SIZE)