struct block *gen_byteop(compiler_state_t *, int, int, bpf_u_int32);
struct block *gen_broadcast(compiler_state_t *, int);
struct block *gen_multicast(compiler_state_t *, int);
+struct block *gen_ifindex(compiler_state_t *, int);
struct block *gen_inbound(compiler_state_t *, int);
struct block *gen_llc(compiler_state_t *);