OFFSET_UNITS
tmp_val = (u32)((port->internal_buf_offset % OFFSET_UNITS) ?
(port->internal_buf_offset / OFFSET_UNITS + 1) :
(port->internal_buf_offset / OFFSET_UNITS));
port->internal_buf_offset = (u8)(tmp_val * OFFSET_UNITS);
((buffer_prefix_content->priv_data_size & (OFFSET_UNITS - 1)) ?
((buffer_prefix_content->priv_data_size + OFFSET_UNITS) &
~(u16)(OFFSET_UNITS - 1)) :