RCQ_DESC_CNT
#define MAX_RCQ_DESC_CNT (RCQ_DESC_CNT - NEXT_PAGE_RCQ_DESC_CNT)
#define NUM_RCQ_BD (RCQ_DESC_CNT * NUM_RCQ_RINGS)
fp->rx_comp_prod = min_t(u16, NUM_RCQ_RINGS*RCQ_DESC_CNT,
&fp->rx_comp_ring[RCQ_DESC_CNT * i - 1];