struct block *gen_llc_u_subtype(compiler_state_t *, bpf_u_int32);
struct block *gen_vlan(compiler_state_t *, bpf_u_int32, int);
-struct block *gen_mpls(compiler_state_t *, bpf_u_int32, int);
+struct block *gen_mpls(compiler_state_t *, volatile bpf_u_int32, int);
struct block *gen_pppoed(compiler_state_t *);
struct block *gen_pppoes(compiler_state_t *, bpf_u_int32, int);
struct block *gen_atmmulti_abbrev(compiler_state_t *, int type);
struct block *gen_mtp2type_abbrev(compiler_state_t *, int type);
-struct block *gen_mtp3field_code(compiler_state_t *, int, bpf_u_int32,
+struct block *gen_mtp3field_code(compiler_state_t *, int, volatile bpf_u_int32,
bpf_u_int32, int);
struct block *gen_pf_ifname(compiler_state_t *, const char *);