TX_DESC_RING_SIZE
#define TX_DESC_RINGN_SIZE(x) TX_DESC_RING_SIZE
#define INIT_BLOCK_TX (TX_DESC_RING_SIZE)
struct sk_buff *tx_skbs[N_TX_RINGS][TX_DESC_RING_SIZE];
struct cas_tiny_count tx_tiny_use[N_TX_RINGS][TX_DESC_RING_SIZE];