-extern void mptcp_update_dss_send_state(struct mptcb *, u_int64_t);
-extern void mptcp_send_addaddr_opt(struct tcpcb *, struct mptcp_addaddr_opt *);
-extern void mptcp_send_remaddr_opt(struct tcpcb *, struct mptcp_remaddr_opt *);
-extern unsigned int mptcp_setup_opts(struct tcpcb *, int, u_char *,
- unsigned int, int, int, unsigned int **, u_int8_t **, u_int64_t *,
- u_int32_t **);
+extern unsigned int mptcp_setup_opts(struct tcpcb *tp, int32_t off, u_char *opt,
+ unsigned int optlen, int flags, int len,
+ boolean_t *p_mptcp_acknow);