1/*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
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.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 *
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.
17 *
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.
21 *
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.
33 */
34
35#ifndef _NETINET_SCTP_OUTPUT_H_
36#define _NETINET_SCTP_OUTPUT_H_
37
38#include <netinet/sctp_header.h>
39
40#if defined(_KERNEL) || defined(__Userspace__)
41
42struct mbuf *
43sctp_add_addresses_to_i_ia(struct sctp_inpcb *inp,
44 struct sctp_tcb *stcb,
45 struct sctp_scoping *scope,
46 struct mbuf *m_at,
47 int cnt_inits_to,
48 uint16_t *padding_len, uint16_t *chunk_len);
49
50int sctp_is_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
51
52int
53sctp_is_address_in_scope(struct sctp_ifa *ifa,
54 struct sctp_scoping *scope,
55 int do_update);
56
57int
58 sctp_is_addr_in_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa);
59
60struct sctp_ifa *
61sctp_source_address_selection(struct sctp_inpcb *inp,
62 struct sctp_tcb *stcb,
63 sctp_route_t *ro, struct sctp_nets *net,
64 int non_asoc_addr_ok, uint32_t vrf_id);
65
66int sctp_v6src_match_nexthop(struct sockaddr_in6 *src6, sctp_route_t *ro);
67
68int sctp_v4src_match_nexthop(struct sctp_ifa *sifa, sctp_route_t *ro);
69
70void sctp_send_initiate(struct sctp_inpcb *, struct sctp_tcb *, int);
71
72void
73sctp_send_initiate_ack(struct sctp_inpcb *, struct sctp_tcb *,
74 struct sctp_nets *, struct mbuf *,
75 int, int,
76 struct sockaddr *, struct sockaddr *,
77 struct sctphdr *, struct sctp_init_chunk *,
78 uint8_t, uint32_t,
79 uint32_t, uint16_t);
80
81struct mbuf *
82sctp_arethere_unrecognized_parameters(struct mbuf *, int, int *,
83 struct sctp_chunkhdr *, int *, int *,
84 uint32_t *);
85
86void sctp_queue_op_err(struct sctp_tcb *, struct mbuf *);
87
88int
89sctp_send_cookie_echo(struct mbuf *, int, int, struct sctp_tcb *,
90 struct sctp_nets *);
91
92void sctp_send_cookie_ack(struct sctp_tcb *);
93
94void
95sctp_send_heartbeat_ack(struct sctp_tcb *, struct mbuf *, int, int,
96 struct sctp_nets *);
97
98void
99sctp_remove_from_wheel(struct sctp_tcb *stcb,
100 struct sctp_association *asoc,
101 struct sctp_stream_out *strq, int holds_lock);
102
103void sctp_send_shutdown(struct sctp_tcb *, struct sctp_nets *);
104
105void sctp_send_shutdown_ack(struct sctp_tcb *, struct sctp_nets *);
106
107void sctp_send_shutdown_complete(struct sctp_tcb *, struct sctp_nets *, int);
108
109void
110sctp_send_shutdown_complete2(struct sockaddr *, struct sockaddr *,
111 struct sctphdr *,
112 uint8_t, uint32_t, uint16_t,
113 uint32_t, uint16_t);
114
115void sctp_send_asconf(struct sctp_tcb *, struct sctp_nets *, int addr_locked);
116
117void sctp_send_asconf_ack(struct sctp_tcb *);
118
119uint32_t sctp_get_frag_point(struct sctp_tcb *);
120
121void sctp_toss_old_cookies(struct sctp_tcb *, struct sctp_association *);
122
123void sctp_toss_old_asconf(struct sctp_tcb *);
124
125void sctp_fix_ecn_echo(struct sctp_association *);
126
127void sctp_move_chunks_from_net(struct sctp_tcb *stcb, struct sctp_nets *net);
128
129#define SCTP_DATA_CHUNK_OVERHEAD(stcb) ((stcb)->asoc.idata_supported ? \
130 sizeof(struct sctp_idata_chunk) : \
131 sizeof(struct sctp_data_chunk))
132
133int
134sctp_output(struct sctp_inpcb *, struct mbuf *, struct sockaddr *,
135 struct mbuf *, struct thread *, int);
136
137void sctp_chunk_output(struct sctp_inpcb *, struct sctp_tcb *, int, int);
138
139void sctp_send_abort_tcb(struct sctp_tcb *, struct mbuf *, int);
140
141void send_forward_tsn(struct sctp_tcb *, struct sctp_association *);
142
143void sctp_send_sack(struct sctp_tcb *, int);
144
145void sctp_send_hb(struct sctp_tcb *, struct sctp_nets *, int);
146
147void sctp_send_ecn_echo(struct sctp_tcb *, struct sctp_nets *, uint32_t);
148
149void
150sctp_send_packet_dropped(struct sctp_tcb *, struct sctp_nets *, struct mbuf *,
151 int, int, int);
152
153void sctp_send_cwr(struct sctp_tcb *, struct sctp_nets *, uint32_t, uint8_t);
154
155void
156 sctp_add_stream_reset_result(struct sctp_tmit_chunk *, uint32_t, uint32_t);
157
158void
159sctp_send_deferred_reset_response(struct sctp_tcb *,
160 struct sctp_stream_reset_list *,
161 int);
162
163void
164sctp_add_stream_reset_result_tsn(struct sctp_tmit_chunk *,
165 uint32_t, uint32_t, uint32_t, uint32_t);
166int
167 sctp_send_stream_reset_out_if_possible(struct sctp_tcb *, int);
168
169int
170sctp_send_str_reset_req(struct sctp_tcb *, uint16_t, uint16_t *,
171 uint8_t, uint8_t, uint8_t, uint16_t, uint16_t, uint8_t);
172
173void
174sctp_send_abort(struct mbuf *, int, struct sockaddr *, struct sockaddr *,
175 struct sctphdr *, uint32_t, struct mbuf *,
176 uint8_t, uint32_t, uint16_t,
177 uint32_t, uint16_t);
178
179void
180sctp_send_operr_to(struct sockaddr *, struct sockaddr *,
181 struct sctphdr *, uint32_t, struct mbuf *,
182 uint8_t, uint32_t, uint16_t,
183 uint32_t, uint16_t);
184
185#endif /* _KERNEL || __Userspace__ */
186
187#if defined(_KERNEL) || defined(__Userspace__)
188int
189sctp_sosend(struct socket *so,
190 struct sockaddr *addr,
191 struct uio *uio,
192 struct mbuf *top,
193 struct mbuf *control,
194 int flags,
195 struct thread *p
196);
197
198#endif
199#endif