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diff --git a/netwerk/sctp/src/netinet/sctp_indata.h b/netwerk/sctp/src/netinet/sctp_indata.h
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+++ b/netwerk/sctp/src/netinet/sctp_indata.h
@@ -0,0 +1,131 @@
+/*-
+ * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
+ * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
+ * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * a) Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * b) Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the distribution.
+ *
+ * c) Neither the name of Cisco Systems, Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef __FreeBSD__
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD: head/sys/netinet/sctp_indata.h 252585 2013-07-03 18:48:43Z tuexen $");
+#endif
+
+#ifndef _NETINET_SCTP_INDATA_H_
+#define _NETINET_SCTP_INDATA_H_
+
+#if defined(_KERNEL) || defined(__Userspace__)
+
+struct sctp_queued_to_read *
+sctp_build_readq_entry(struct sctp_tcb *stcb,
+ struct sctp_nets *net,
+ uint32_t tsn, uint32_t ppid,
+ uint32_t context, uint16_t stream_no,
+ uint16_t stream_seq, uint8_t flags,
+ struct mbuf *dm);
+
+
+#define sctp_build_readq_entry_mac(_ctl, in_it, context, net, tsn, ppid, stream_no, stream_seq, flags, dm) do { \
+ if (_ctl) { \
+ atomic_add_int(&((net)->ref_count), 1); \
+ (_ctl)->sinfo_stream = stream_no; \
+ (_ctl)->sinfo_ssn = stream_seq; \
+ (_ctl)->sinfo_flags = (flags << 8); \
+ (_ctl)->sinfo_ppid = ppid; \
+ (_ctl)->sinfo_context = context; \
+ (_ctl)->sinfo_timetolive = 0; \
+ (_ctl)->sinfo_tsn = tsn; \
+ (_ctl)->sinfo_cumtsn = tsn; \
+ (_ctl)->sinfo_assoc_id = sctp_get_associd((in_it)); \
+ (_ctl)->length = 0; \
+ (_ctl)->held_length = 0; \
+ (_ctl)->whoFrom = net; \
+ (_ctl)->data = dm; \
+ (_ctl)->tail_mbuf = NULL; \
+ (_ctl)->aux_data = NULL; \
+ (_ctl)->stcb = (in_it); \
+ (_ctl)->port_from = (in_it)->rport; \
+ (_ctl)->spec_flags = 0; \
+ (_ctl)->do_not_ref_stcb = 0; \
+ (_ctl)->end_added = 0; \
+ (_ctl)->pdapi_aborted = 0; \
+ (_ctl)->some_taken = 0; \
+ } \
+} while (0)
+
+
+
+struct mbuf *
+sctp_build_ctl_nchunk(struct sctp_inpcb *inp,
+ struct sctp_sndrcvinfo *sinfo);
+
+void sctp_set_rwnd(struct sctp_tcb *, struct sctp_association *);
+
+uint32_t
+sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc);
+
+void
+sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack,
+ uint32_t rwnd, int *abort_now, int ecne_seen);
+
+void
+sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup,
+ struct sctp_tcb *stcb,
+ uint16_t num_seg, uint16_t num_nr_seg, uint16_t num_dup,
+ int *abort_now, uint8_t flags,
+ uint32_t cum_ack, uint32_t rwnd, int ecne_seen);
+
+/* draft-ietf-tsvwg-usctp */
+void
+sctp_handle_forward_tsn(struct sctp_tcb *,
+ struct sctp_forward_tsn_chunk *, int *, struct mbuf *, int);
+
+struct sctp_tmit_chunk *
+sctp_try_advance_peer_ack_point(struct sctp_tcb *, struct sctp_association *);
+
+void sctp_service_queues(struct sctp_tcb *, struct sctp_association *);
+
+void
+sctp_update_acked(struct sctp_tcb *, struct sctp_shutdown_chunk *, int *);
+
+int
+sctp_process_data(struct mbuf **, int, int *, int,
+ struct sockaddr *src, struct sockaddr *dst,
+ struct sctphdr *,
+ struct sctp_inpcb *, struct sctp_tcb *,
+ struct sctp_nets *, uint32_t *,
+#if defined(__FreeBSD__)
+ uint8_t, uint32_t,
+#endif
+ uint32_t, uint16_t);
+
+void sctp_slide_mapping_arrays(struct sctp_tcb *stcb);
+
+void sctp_sack_check(struct sctp_tcb *, int);
+
+#endif
+#endif