CTLSHIFT_BITFLD
bit = (oidp->oid_kind & CTLMASK_BITFLD) >> CTLSHIFT_BITFLD;
bit = (oidp->oid_kind & CTLMASK_BITFLD) >> CTLSHIFT_BITFLD;
#define CTLTYPE_BIT32(n) (0x10 | ((n) << CTLSHIFT_BITFLD))
#define CTLTYPE_BIT64(n) (0x11 | ((n) << CTLSHIFT_BITFLD))