MAX_PDU_SIZE     1400 drivers/atm/fore200e.c     fore200e_vcc->tx_min_pdu = fore200e_vcc->rx_min_pdu = MAX_PDU_SIZE + 1;
MAX_PDU_SIZE       52 drivers/atm/fore200e.h #define RSD_REQUIRED  (((MAX_PDU_SIZE - SMALL_BUFFER_SIZE + LARGE_BUFFER_SIZE) / LARGE_BUFFER_SIZE) + 1)