2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
5 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
6 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
14 * b) Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the distribution.
18 * c) Neither the name of Cisco Systems, Inc. nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
24 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32 * THE POSSIBILITY OF SUCH DAMAGE.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #ifndef _NETINET_SCTP_INDATA_H_
39 #define _NETINET_SCTP_INDATA_H_
41 #if defined(_KERNEL) || defined(__Userspace__)
43 struct sctp_queued_to_read *
44 sctp_build_readq_entry(struct sctp_tcb *stcb,
45 struct sctp_nets *net,
46 uint32_t tsn, uint32_t ppid,
47 uint32_t context, uint16_t sid,
48 uint32_t mid, uint8_t flags,
52 #define sctp_build_readq_entry_mac(_ctl, in_it, context, net, tsn, ppid, sid, flags, dm, tfsn, mid) do { \
54 atomic_add_int(&((net)->ref_count), 1); \
55 memset(_ctl, 0, sizeof(struct sctp_queued_to_read)); \
56 (_ctl)->sinfo_stream = sid; \
57 TAILQ_INIT(&_ctl->reasm); \
58 (_ctl)->top_fsn = tfsn; \
60 (_ctl)->sinfo_flags = (flags << 8); \
61 (_ctl)->sinfo_ppid = ppid; \
62 (_ctl)->sinfo_context = context; \
63 (_ctl)->fsn_included = 0xffffffff; \
64 (_ctl)->top_fsn = 0xffffffff; \
65 (_ctl)->sinfo_tsn = tsn; \
66 (_ctl)->sinfo_cumtsn = tsn; \
67 (_ctl)->sinfo_assoc_id = sctp_get_associd((in_it)); \
68 (_ctl)->whoFrom = net; \
70 (_ctl)->stcb = (in_it); \
71 (_ctl)->port_from = (in_it)->rport; \
78 sctp_build_ctl_nchunk(struct sctp_inpcb *inp,
79 struct sctp_sndrcvinfo *sinfo);
81 void sctp_set_rwnd(struct sctp_tcb *, struct sctp_association *);
84 sctp_calc_rwnd(struct sctp_tcb *stcb, struct sctp_association *asoc);
87 sctp_express_handle_sack(struct sctp_tcb *stcb, uint32_t cumack,
88 uint32_t rwnd, int *abort_now, int ecne_seen);
91 sctp_handle_sack(struct mbuf *m, int offset_seg, int offset_dup,
92 struct sctp_tcb *stcb,
93 uint16_t num_seg, uint16_t num_nr_seg, uint16_t num_dup,
94 int *abort_now, uint8_t flags,
95 uint32_t cum_ack, uint32_t rwnd, int ecne_seen);
97 /* draft-ietf-tsvwg-usctp */
99 sctp_handle_forward_tsn(struct sctp_tcb *,
100 struct sctp_forward_tsn_chunk *, int *, struct mbuf *, int);
102 struct sctp_tmit_chunk *sctp_try_advance_peer_ack_point(struct sctp_tcb *, struct sctp_association *);
104 void sctp_service_queues(struct sctp_tcb *, struct sctp_association *);
107 sctp_update_acked(struct sctp_tcb *, struct sctp_shutdown_chunk *, int *);
110 sctp_process_data(struct mbuf **, int, int *, int,
111 struct sctp_inpcb *, struct sctp_tcb *,
112 struct sctp_nets *, uint32_t *);
114 void sctp_slide_mapping_arrays(struct sctp_tcb *stcb);
116 void sctp_sack_check(struct sctp_tcb *, int);