tools/test/p4src/p4-16/include/defines.p4

#ifndef DEFINES
#define DEFINES
// Logic ports as defined in the simple_switch target
#define MAX_PORTS 254
#define CPU_PORT 9w255
#define DROP_PORT 9w511
typedef bit<16> GroupId;
typedef bit<8> GroupSize;
typedef bit<9> Port;
#endif