- @param tx_ring_sz - the number of entries of TX ring
- @param rx_ring_sz - the number of entries of RX ring
+ @param tx_ring_sz - the number of entries of TX ring, optional, default is 256 entries, must be power of 2
+ @param rx_ring_sz - the number of entries of RX ring, optional, default is 256 entries, must be power of 2