ADD_EXTEND_64
ADD_EXTEND_64(pstats->brb_drop_hi, pstats->brb_drop_lo,
ADD_EXTEND_64(estats->brb_truncate_hi, estats->brb_truncate_lo,
ADD_EXTEND_64(pstats->mac_stx[1].s##_hi, \
ADD_EXTEND_64(qstats->t##_hi, qstats->t##_lo, diff); \
ADD_EXTEND_64(estats->t##_hi, estats->t##_lo, diff); \
ADD_EXTEND_64(qstats->t##_hi, qstats->t##_lo, diff); \
ADD_EXTEND_64(estats->t##_hi, estats->t##_lo, diff); \
ADD_EXTEND_64(qstats->t##_hi, qstats->t##_lo, diff); \