RX_RING_LEN_BITS
le16_to_cpu(TX_RING_LEN_BITS | RX_RING_LEN_BITS);
le16_to_cpu(TX_RING_LEN_BITS | RX_RING_LEN_BITS);
pMdl->RxRingLenBits = RX_RING_LEN_BITS;
#define RX_RING_SIZE (1 << (RX_RING_LEN_BITS))