MIN_PACKET_SIZE
char loopback_tx_pkt[MIN_PACKET_SIZE];
char loopback_rx_pkt[MIN_PACKET_SIZE];
memset(pdata->loopback_rx_pkt, 0, MIN_PACKET_SIZE);
txcmd_a |= MIN_PACKET_SIZE;
txcmd_b = MIN_PACKET_SIZE << 16 | MIN_PACKET_SIZE;
wrsz = MIN_PACKET_SIZE + 3;
if (pktlength != (MIN_PACKET_SIZE + 4)) {
for (j = 0; j < MIN_PACKET_SIZE; j++) {
for (i = 14; i < MIN_PACKET_SIZE; i++)