+extern void inp_incr_sndbytes_total(struct socket *, int);
+extern void inp_decr_sndbytes_total(struct socket *, int);
+extern void inp_count_sndbytes(struct inpcb *, u_int32_t);
+extern void inp_incr_sndbytes_unsent(struct socket *, int32_t);
+extern void inp_decr_sndbytes_unsent(struct socket *, int32_t);
+extern int32_t inp_get_sndbytes_allunsent(struct socket *, u_int32_t);
+extern void inp_decr_sndbytes_allunsent(struct socket *, u_int32_t);