1/*-
2 * Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
8 *
9 * a) Redistributions of source code must retain the above copyright notice,
10 *    this list of conditions and the following disclaimer.
11 *
12 * b) Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in
14 *    the documentation and/or other materials provided with the distribution.
15 *
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 *    contributors may be used to endorse or promote products derived
18 *    from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#include <sys/cdefs.h>
34__FBSDID("$FreeBSD: stable/11/sys/netinet/sctp_output.h 360731 2020-05-07 01:13:02Z tuexen $");
35
36#ifndef _NETINET_SCTP_OUTPUT_H_
37#define _NETINET_SCTP_OUTPUT_H_
38
39#include <netinet/sctp_header.h>
40
41#if defined(_KERNEL) || defined(__Userspace__)
42
43
44struct mbuf *
45sctp_add_addresses_to_i_ia(struct sctp_inpcb *inp,
46    struct sctp_tcb *stcb,
47    struct sctp_scoping *scope,
48    struct mbuf *m_at,
49    int cnt_inits_to,
50    uint16_t *padding_len, uint16_t *chunk_len);
51
52
53int sctp_is_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
54
55
56int
57sctp_is_address_in_scope(struct sctp_ifa *ifa,
58    struct sctp_scoping *scope,
59    int do_update);
60
61int
62    sctp_is_addr_in_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa);
63
64struct sctp_ifa *
65sctp_source_address_selection(struct sctp_inpcb *inp,
66    struct sctp_tcb *stcb,
67    sctp_route_t *ro, struct sctp_nets *net,
68    int non_asoc_addr_ok, uint32_t vrf_id);
69
70int
71    sctp_v6src_match_nexthop(struct sockaddr_in6 *src6, sctp_route_t *ro);
72int
73    sctp_v4src_match_nexthop(struct sctp_ifa *sifa, sctp_route_t *ro);
74
75void
76sctp_send_initiate(struct sctp_inpcb *, struct sctp_tcb *, int
77#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
78    SCTP_UNUSED
79#endif
80);
81
82void
83sctp_send_initiate_ack(struct sctp_inpcb *, struct sctp_tcb *,
84    struct sctp_nets *, struct mbuf *,
85    int, int,
86    struct sockaddr *, struct sockaddr *,
87    struct sctphdr *, struct sctp_init_chunk *,
88    uint8_t, uint32_t,
89    uint32_t, uint16_t);
90
91struct mbuf *
92sctp_arethere_unrecognized_parameters(struct mbuf *, int, int *,
93    struct sctp_chunkhdr *, int *, int *);
94void sctp_queue_op_err(struct sctp_tcb *, struct mbuf *);
95
96int
97sctp_send_cookie_echo(struct mbuf *, int, int, struct sctp_tcb *,
98    struct sctp_nets *);
99
100void sctp_send_cookie_ack(struct sctp_tcb *);
101
102void
103sctp_send_heartbeat_ack(struct sctp_tcb *, struct mbuf *, int, int,
104    struct sctp_nets *);
105
106void
107sctp_remove_from_wheel(struct sctp_tcb *stcb,
108    struct sctp_association *asoc,
109    struct sctp_stream_out *strq, int holds_lock);
110
111
112void sctp_send_shutdown(struct sctp_tcb *, struct sctp_nets *);
113
114void sctp_send_shutdown_ack(struct sctp_tcb *, struct sctp_nets *);
115
116void sctp_send_shutdown_complete(struct sctp_tcb *, struct sctp_nets *, int);
117
118void
119sctp_send_shutdown_complete2(struct sockaddr *, struct sockaddr *,
120    struct sctphdr *,
121    uint8_t, uint32_t, uint16_t,
122    uint32_t, uint16_t);
123
124void sctp_send_asconf(struct sctp_tcb *, struct sctp_nets *, int addr_locked);
125
126void sctp_send_asconf_ack(struct sctp_tcb *);
127
128int sctp_get_frag_point(struct sctp_tcb *, struct sctp_association *);
129
130void sctp_toss_old_cookies(struct sctp_tcb *, struct sctp_association *);
131
132void sctp_toss_old_asconf(struct sctp_tcb *);
133
134void sctp_fix_ecn_echo(struct sctp_association *);
135
136void sctp_move_chunks_from_net(struct sctp_tcb *stcb, struct sctp_nets *net);
137
138
139#define SCTP_DATA_CHUNK_OVERHEAD(stcb) ((stcb)->asoc.idata_supported ? \
140					sizeof(struct sctp_idata_chunk) : \
141					sizeof(struct sctp_data_chunk))
142
143int
144sctp_output(struct sctp_inpcb *, struct mbuf *, struct sockaddr *,
145    struct mbuf *, struct thread *, int);
146
147void
148sctp_chunk_output(struct sctp_inpcb *, struct sctp_tcb *, int, int
149#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
150    SCTP_UNUSED
151#endif
152);
153void
154sctp_send_abort_tcb(struct sctp_tcb *, struct mbuf *, int
155#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
156    SCTP_UNUSED
157#endif
158);
159
160void send_forward_tsn(struct sctp_tcb *, struct sctp_association *);
161
162void sctp_send_sack(struct sctp_tcb *, int);
163
164void sctp_send_hb(struct sctp_tcb *, struct sctp_nets *, int);
165
166void sctp_send_ecn_echo(struct sctp_tcb *, struct sctp_nets *, uint32_t);
167
168
169void
170sctp_send_packet_dropped(struct sctp_tcb *, struct sctp_nets *, struct mbuf *,
171    int, int, int);
172
173
174
175void sctp_send_cwr(struct sctp_tcb *, struct sctp_nets *, uint32_t, uint8_t);
176
177
178void
179     sctp_add_stream_reset_result(struct sctp_tmit_chunk *, uint32_t, uint32_t);
180
181void
182sctp_send_deferred_reset_response(struct sctp_tcb *,
183    struct sctp_stream_reset_list *,
184    int);
185
186void
187sctp_add_stream_reset_result_tsn(struct sctp_tmit_chunk *,
188    uint32_t, uint32_t, uint32_t, uint32_t);
189int
190    sctp_send_stream_reset_out_if_possible(struct sctp_tcb *, int);
191
192int
193sctp_send_str_reset_req(struct sctp_tcb *, uint16_t, uint16_t *,
194    uint8_t, uint8_t, uint8_t, uint16_t, uint16_t, uint8_t);
195
196void
197sctp_send_abort(struct mbuf *, int, struct sockaddr *, struct sockaddr *,
198    struct sctphdr *, uint32_t, struct mbuf *,
199    uint8_t, uint32_t, uint16_t,
200    uint32_t, uint16_t);
201
202void
203sctp_send_operr_to(struct sockaddr *, struct sockaddr *,
204    struct sctphdr *, uint32_t, struct mbuf *,
205    uint8_t, uint32_t, uint16_t,
206    uint32_t, uint16_t);
207
208#endif				/* _KERNEL || __Userspace__ */
209
210#if defined(_KERNEL) || defined(__Userspace__)
211int
212sctp_sosend(struct socket *so,
213    struct sockaddr *addr,
214    struct uio *uio,
215    struct mbuf *top,
216    struct mbuf *control,
217    int flags,
218    struct thread *p
219);
220
221#endif
222#endif
223