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