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#ifdef __FreeBSD__
34#include <sys/cdefs.h>
35__FBSDID("$FreeBSD: head/sys/netinet/sctp_output.h 246595 2013-02-09 17:26:14Z tuexen $");
36#endif
37
38#ifndef _NETINET_SCTP_OUTPUT_H_
39#define _NETINET_SCTP_OUTPUT_H_
40
41#include <netinet/sctp_header.h>
42
43#if defined(_KERNEL) || defined(__Userspace__)
44
45
46struct mbuf *
47sctp_add_addresses_to_i_ia(struct sctp_inpcb *inp,
48                           struct sctp_tcb *stcb,
49			   struct sctp_scoping *scope,
50			   struct mbuf *m_at,
51			   int cnt_inits_to,
52			   uint16_t *padding_len, uint16_t *chunk_len);
53
54
55int sctp_is_addr_restricted(struct sctp_tcb *, struct sctp_ifa *);
56
57
58int
59sctp_is_address_in_scope(struct sctp_ifa *ifa,
60                         struct sctp_scoping *scope,
61			 int do_update);
62
63int
64sctp_is_addr_in_ep(struct sctp_inpcb *inp, struct sctp_ifa *ifa);
65
66struct sctp_ifa *
67sctp_source_address_selection(struct sctp_inpcb *inp,
68			      struct sctp_tcb *stcb,
69			      sctp_route_t *ro, struct sctp_nets *net,
70			      int non_asoc_addr_ok, uint32_t vrf_id);
71
72#if defined(__FreeBSD__) || defined(__APPLE__) || defined(__Userspace__)
73int
74sctp_v6src_match_nexthop(struct sockaddr_in6 *src6, sctp_route_t *ro);
75int
76sctp_v4src_match_nexthop(struct sctp_ifa *sifa, sctp_route_t *ro);
77#endif
78
79void sctp_send_initiate(struct sctp_inpcb *, struct sctp_tcb *, int
80#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
81    SCTP_UNUSED
82#endif
83    );
84
85void
86sctp_send_initiate_ack(struct sctp_inpcb *, struct sctp_tcb *, struct mbuf *,
87                       int, int,
88                       struct sockaddr *, struct sockaddr *,
89                       struct sctphdr *, struct sctp_init_chunk *,
90#if defined(__FreeBSD__)
91                       uint8_t, uint32_t,
92#endif
93                       uint32_t, uint16_t, int);
94
95struct mbuf *
96sctp_arethere_unrecognized_parameters(struct mbuf *, int, int *,
97				      struct sctp_chunkhdr *, int *);
98void sctp_queue_op_err(struct sctp_tcb *, struct mbuf *);
99
100int
101sctp_send_cookie_echo(struct mbuf *, int, struct sctp_tcb *,
102    struct sctp_nets *);
103
104void sctp_send_cookie_ack(struct sctp_tcb *);
105
106void
107sctp_send_heartbeat_ack(struct sctp_tcb *, struct mbuf *, int, int,
108    struct sctp_nets *);
109
110void
111sctp_remove_from_wheel(struct sctp_tcb *stcb,
112					   struct sctp_association *asoc,
113					   struct sctp_stream_out *strq, int holds_lock);
114
115
116void sctp_send_shutdown(struct sctp_tcb *, struct sctp_nets *);
117
118void sctp_send_shutdown_ack(struct sctp_tcb *, struct sctp_nets *);
119
120void sctp_send_shutdown_complete(struct sctp_tcb *, struct sctp_nets *, int);
121
122void sctp_send_shutdown_complete2(struct sockaddr *, struct sockaddr *,
123                                  struct sctphdr *,
124#if defined(__FreeBSD__)
125                                  uint8_t, uint32_t,
126#endif
127                                  uint32_t, uint16_t);
128
129void sctp_send_asconf(struct sctp_tcb *, struct sctp_nets *, int addr_locked);
130
131void sctp_send_asconf_ack(struct sctp_tcb *);
132
133int sctp_get_frag_point(struct sctp_tcb *, struct sctp_association *);
134
135void sctp_toss_old_cookies(struct sctp_tcb *, struct sctp_association *);
136
137void sctp_toss_old_asconf(struct sctp_tcb *);
138
139void sctp_fix_ecn_echo(struct sctp_association *);
140
141void sctp_move_chunks_from_net(struct sctp_tcb *stcb, struct sctp_nets *net);
142
143#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
144int
145sctp_output(struct sctp_inpcb *, struct mbuf *, struct sockaddr *,
146    struct mbuf *, struct thread *, int);
147#elif defined(__Windows__)
148sctp_output(struct sctp_inpcb *, struct mbuf *, struct sockaddr *,
149    struct mbuf *, PKTHREAD, int);
150#else
151#if defined(__Userspace__)
152/* sctp_output is called bu sctp_sendm. Not using sctp_sendm for __Userspace__ */
153#endif
154int
155sctp_output(struct sctp_inpcb *,
156#if defined(__Panda__)
157    pakhandle_type,
158#else
159    struct mbuf *,
160#endif
161    struct sockaddr *,
162#if defined(__Panda__)
163    pakhandle_type,
164#else
165    struct mbuf *,
166#endif
167    struct proc *, int);
168#endif
169
170void sctp_chunk_output(struct sctp_inpcb *, struct sctp_tcb *, int, int
171#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
172    SCTP_UNUSED
173#endif
174    );
175void sctp_send_abort_tcb(struct sctp_tcb *, struct mbuf *, int
176#if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
177    SCTP_UNUSED
178#endif
179    );
180
181void send_forward_tsn(struct sctp_tcb *, struct sctp_association *);
182
183void sctp_send_sack(struct sctp_tcb *, int);
184
185void sctp_send_hb(struct sctp_tcb *, struct sctp_nets *, int);
186
187void sctp_send_ecn_echo(struct sctp_tcb *, struct sctp_nets *, uint32_t);
188
189
190void
191sctp_send_packet_dropped(struct sctp_tcb *, struct sctp_nets *, struct mbuf *,
192    int, int, int);
193
194
195
196void sctp_send_cwr(struct sctp_tcb *, struct sctp_nets *, uint32_t, uint8_t);
197
198
199void
200sctp_add_stream_reset_out(struct sctp_tmit_chunk *,
201                          int, uint16_t *, uint32_t, uint32_t, uint32_t);
202
203void
204sctp_add_stream_reset_result(struct sctp_tmit_chunk *, uint32_t, uint32_t);
205
206void
207sctp_add_stream_reset_result_tsn(struct sctp_tmit_chunk *,
208                                 uint32_t, uint32_t, uint32_t, uint32_t);
209
210int
211sctp_send_str_reset_req(struct sctp_tcb *, int , uint16_t *, uint8_t, uint8_t,
212			uint8_t, uint8_t, uint16_t, uint16_t, uint8_t);
213
214void
215sctp_send_abort(struct mbuf *, int, struct sockaddr *, struct sockaddr *,
216                struct sctphdr *, uint32_t, struct mbuf *,
217#if defined(__FreeBSD__)
218                uint8_t, uint32_t,
219#endif
220                uint32_t, uint16_t);
221
222void sctp_send_operr_to(struct sockaddr *, struct sockaddr *,
223                        struct sctphdr *, uint32_t, struct mbuf *,
224#if defined(__FreeBSD__)
225                        uint8_t, uint32_t,
226#endif
227                        uint32_t, uint16_t);
228
229#endif /* _KERNEL || __Userspace__ */
230
231#if defined(_KERNEL) || defined(__Userspace__)
232int
233sctp_sosend(struct socket *so,
234    struct sockaddr *addr,
235    struct uio *uio,
236#ifdef __Panda__
237    pakhandle_type top,
238    pakhandle_type control,
239#else
240    struct mbuf *top,
241    struct mbuf *control,
242#endif
243#if defined(__APPLE__) || defined(__Panda__)
244    int flags
245#else
246    int flags,
247#if defined(__FreeBSD__) && __FreeBSD_version >= 500000
248    struct thread *p
249#elif defined(__Windows__)
250    PKTHREAD p
251#else
252#if defined(__Userspace__)
253    /* proc is a dummy in __Userspace__ and will not be passed to sctp_lower_sosend */
254#endif
255    struct proc *p
256#endif
257#endif
258);
259
260#endif
261#endif
262
263