MAX_RX_DESC_CNT
#define MAX_RX_AVAIL (MAX_RX_DESC_CNT * NUM_RX_RINGS - 2)
#define NUM_BD_PG_REQ ((NUM_BD_REQ + MAX_RX_DESC_CNT - 1) / \
MAX_RX_DESC_CNT)
(MAX_RX_DESC_CNT - 1)) ? \