LARGE_BUFFER_SIZE
#define BUFFER_L1_SIZE LARGE_BUFFER_SIZE /* size of large buffers, scheme 1 */
#define BUFFER_L2_SIZE LARGE_BUFFER_SIZE /* size of large buffers, scheme 2 */
#define RSD_REQUIRED (((MAX_PDU_SIZE - SMALL_BUFFER_SIZE + LARGE_BUFFER_SIZE) / LARGE_BUFFER_SIZE) + 1)