FBNIC_TWD_L2_HLEN_MASK
FIELD_GET(FBNIC_TWD_L2_HLEN_MASK, twd));
u64 default_meta = FIELD_PREP(FBNIC_TWD_L2_HLEN_MASK, ETH_HLEN) |
*meta |= cpu_to_le64(FIELD_PREP(FBNIC_TWD_L2_HLEN_MASK, l2len / 2) |
!FIELD_FIT(FBNIC_TWD_L2_HLEN_MASK, l2len / 2) ||