MAX_CP_PAGES
if (bn->cp_nr_pages > MAX_CP_PAGES) {
bn->cp_nr_pages = MAX_CP_PAGES;
bn->cp_ring_size = MAX_CP_PAGES * CP_DESC_CNT - 1;
if (bp->cp_nr_pages > MAX_CP_PAGES) {
bp->cp_nr_pages = MAX_CP_PAGES;
bp->cp_ring_size = MAX_CP_PAGES * CP_DESC_CNT - 1;