hfi1_get_16b_padding
extra_bytes = hfi1_get_16b_padding(*hwords << 2, 0);
u8 extra_bytes = hfi1_get_16b_padding(
extra_bytes = hfi1_get_16b_padding((ps->s_txreq->hdr_dwords << 2),
nwords = ((hfi1_get_16b_padding(hwords << 2, 0) +
(hfi1_get_16b_padding(hwords << 2, 0) << 20);
extra_bytes = hfi1_get_16b_padding(hdrbytes - 8, length) +
u8 extra_bytes = hfi1_get_16b_padding((hdrwords << 2), len);
u8 pad_size = hfi1_get_16b_padding((hdrwords << 2), len);