int len;
/* format:
- b0: rx status
- b1: packet length (incl crc) low
- b2: packet length (incl crc) high
- b3..n-4: packet data
+ b1: rx status
+ b2: packet length (incl crc) low
+ b3: packet length (incl crc) high
+ b4..n-4: packet data
bn-3..bn: ethernet crc
*/
int len;
/* format:
- b0: packet length low
- b1: packet length high
+ b1: packet length low
+ b2: packet length high
b3..n: packet data
*/