1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
|
/*-
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright (c) 2001-2007, by Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
* Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* a) Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* b) Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the distribution.
*
* c) Neither the name of Cisco Systems, Inc. nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef _NETINET_SCTP_UTIL_H_
#define _NETINET_SCTP_UTIL_H_
#if defined(_KERNEL) || defined(__Userspace__)
#define SCTP_READ_LOCK_HELD 1
#define SCTP_READ_LOCK_NOT_HELD 0
#ifdef SCTP_ASOCLOG_OF_TSNS
void sctp_print_out_track_log(struct sctp_tcb *stcb);
#endif
#ifdef SCTP_MBUF_LOGGING
struct mbuf *sctp_m_free(struct mbuf *m);
void sctp_m_freem(struct mbuf *m);
#else
#define sctp_m_free m_free
#define sctp_m_freem m_freem
#endif
#if defined(SCTP_LOCAL_TRACE_BUF)
void
sctp_log_trace(uint32_t fr, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f);
#endif
#define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id)
/*
* Function prototypes
*/
int32_t
sctp_map_assoc_state(int);
uint32_t
sctp_get_ifa_hash_val(struct sockaddr *addr);
struct sctp_ifa *
sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock);
struct sctp_ifa *
sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock);
uint32_t sctp_select_initial_TSN(struct sctp_pcb *);
uint32_t sctp_select_a_tag(struct sctp_inpcb *, uint16_t lport, uint16_t rport, int);
int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, uint32_t, uint32_t, uint32_t, uint16_t);
void sctp_fill_random_store(struct sctp_pcb *);
/*
* NOTE: sctp_timer_start() will increment the reference count of any relevant
* structure the timer is referencing, in order to prevent a race condition
* between the timer executing and the structure being freed.
*
* When the timer fires or sctp_timer_stop() is called, these references are
* removed.
*/
void
sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *,
struct sctp_nets *);
void
sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *,
struct sctp_nets *, uint32_t);
int
sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id);
void
sctp_wakeup_the_read_socket(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
int so_locked
#if !(defined(__APPLE__) && !defined(__Userspace__))
SCTP_UNUSED
#endif
);
#if defined(__Userspace__)
void sctp_invoke_recv_callback(struct sctp_inpcb *,
struct sctp_tcb *,
struct sctp_queued_to_read *,
int);
#endif
void
sctp_add_to_readq(struct sctp_inpcb *inp,
struct sctp_tcb *stcb,
struct sctp_queued_to_read *control,
struct sockbuf *sb,
int end,
int inpread_locked,
int so_locked);
void sctp_iterator_worker(void);
uint32_t sctp_get_prev_mtu(uint32_t);
uint32_t sctp_get_next_mtu(uint32_t);
void
sctp_timeout_handler(void *);
int
sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *,
struct sctp_nets *, struct timeval *, int);
uint32_t sctp_calculate_len(struct mbuf *);
caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *);
struct sctp_paramhdr *
sctp_get_next_param(struct mbuf *, int,
struct sctp_paramhdr *, int);
struct mbuf *
sctp_add_pad_tombuf(struct mbuf *, int);
struct mbuf *
sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *);
void sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *, int);
void
sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
struct sctp_inpcb *new_inp,
struct sctp_tcb *stcb, int waitflags);
void sctp_stop_timers_for_shutdown(struct sctp_tcb *);
/* Stop all timers for association and remote addresses. */
void sctp_stop_association_timers(struct sctp_tcb *, bool);
void sctp_report_all_outbound(struct sctp_tcb *, uint16_t, int);
int sctp_expand_mapping_array(struct sctp_association *, uint32_t);
void sctp_abort_notification(struct sctp_tcb *, bool, bool, uint16_t,
struct sctp_abort_chunk *, int);
/* We abort responding to an IP packet for some reason */
void
sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *, struct mbuf *,
int, struct sockaddr *, struct sockaddr *,
struct sctphdr *, struct mbuf *,
#if defined(__FreeBSD__) && !defined(__Userspace__)
uint8_t, uint32_t,
#endif
uint32_t, uint16_t);
/* We choose to abort via user input */
void
sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *,
struct mbuf *, bool, int);
void sctp_handle_ootb(struct mbuf *, int, int,
struct sockaddr *, struct sockaddr *,
struct sctphdr *, struct sctp_inpcb *,
struct mbuf *,
#if defined(__FreeBSD__) && !defined(__Userspace__)
uint8_t, uint32_t, uint16_t,
#endif
uint32_t, uint16_t);
int sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
int totaddr, int *error);
int
sctp_connectx_helper_find(struct sctp_inpcb *, struct sockaddr *,
unsigned int, unsigned int *, unsigned int *, unsigned int);
int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *);
#ifdef INET6
uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
#if defined(SCTP_EMBEDDED_V6_SCOPE)
struct sockaddr_in6 *
sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
#ifdef SCTP_KAME
#define sctp_recover_scope_mac(addr, store) do { \
if ((addr->sin6_family == AF_INET6) && \
(IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \
*store = *addr; \
if (addr->sin6_scope_id == 0) { \
if (!sa6_recoverscope(store)) { \
addr = store; \
} \
} else { \
in6_clearscope(&addr->sin6_addr); \
addr = store; \
} \
} \
} while (0)
#else
#define sctp_recover_scope_mac(addr, store) do { \
if ((addr->sin6_family == AF_INET6) && \
(IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \
*store = *addr; \
if (addr->sin6_scope_id == 0) { \
if (!in6_recoverscope(store, &store->sin6_addr, \
NULL)) { \
addr = store; \
} \
} else { \
in6_clearscope(&addr->sin6_addr); \
addr = store; \
} \
} \
} while (0)
#endif
#endif
#endif
int sctp_cmpaddr(struct sockaddr *, struct sockaddr *);
void sctp_print_address(struct sockaddr *);
int
sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *,
uint8_t, int);
struct mbuf *sctp_generate_cause(uint16_t, char *);
struct mbuf *sctp_generate_no_user_data_cause(uint32_t);
void sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
struct sockaddr *sa, uint32_t vrf_id, int *error,
void *p);
void sctp_bindx_delete_address(struct sctp_inpcb *inp, struct sockaddr *sa,
uint32_t vrf_id, int *error);
int sctp_local_addr_count(struct sctp_tcb *stcb);
void
sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *,
struct sctp_tmit_chunk *, int);
#define sctp_free_spbufspace(stcb, asoc, sp) \
do { \
if (sp->data != NULL) { \
if ((asoc)->total_output_queue_size >= sp->length) { \
atomic_subtract_int(&(asoc)->total_output_queue_size, sp->length); \
} else { \
(asoc)->total_output_queue_size = 0; \
} \
if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
SCTP_SB_DECR(&stcb->sctp_socket->so_snd, sp->length); \
} \
} \
} while (0)
#define sctp_snd_sb_alloc(stcb, sz) \
do { \
atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \
if ((stcb->sctp_socket != NULL) && \
((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
(stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
SCTP_SB_INCR(&stcb->sctp_socket->so_snd, sz); \
} \
} while (0)
/* functions to start/stop udp tunneling */
#if (defined(__APPLE__) || defined(__FreeBSD__)) && !defined(__Userspace__)
void sctp_over_udp_stop(void);
int sctp_over_udp_start(void);
#endif
#if defined(_WIN32) && !defined(__Userspace__)
void sctp_over_udp_restart(void);
#endif
int
sctp_soreceive(struct socket *so, struct sockaddr **psa,
struct uio *uio,
struct mbuf **mp0,
struct mbuf **controlp,
int *flagsp);
void
sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d);
void
sctp_wakeup_log(struct sctp_tcb *stcb,
uint32_t wake_cnt, int from);
void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int);
void sctp_log_nagle_event(struct sctp_tcb *stcb, int action);
#ifdef SCTP_MBUF_LOGGING
void
sctp_log_mb(struct mbuf *m, int from);
void
sctp_log_mbc(struct mbuf *m, int from);
#endif
void
sctp_sblog(struct sockbuf *sb,
struct sctp_tcb *stcb, int from, int incr);
void
sctp_log_strm_del(struct sctp_queued_to_read *control,
struct sctp_queued_to_read *poschk,
int from);
void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t);
void rto_logging(struct sctp_nets *net, int from);
void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc);
void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from);
void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t);
void sctp_log_block(uint8_t, struct sctp_association *, ssize_t);
void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t);
void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t);
int sctp_fill_stat_log(void *, size_t *);
void sctp_log_fr(uint32_t, uint32_t, uint32_t, int);
void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int);
void sctp_log_map(uint32_t, uint32_t, uint32_t, int);
void sctp_print_mapping_array(struct sctp_association *asoc);
void sctp_clr_stat_log(void);
#ifdef SCTP_AUDITING_ENABLED
void
sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *,
struct sctp_nets *);
void sctp_audit_log(uint8_t, uint8_t);
#endif
uint32_t sctp_min_mtu(uint32_t, uint32_t, uint32_t);
#if defined(__FreeBSD__) && !defined(__Userspace__)
void sctp_hc_set_mtu(union sctp_sockstore *, uint16_t, uint32_t);
uint32_t sctp_hc_get_mtu(union sctp_sockstore *, uint16_t);
#endif
void sctp_set_state(struct sctp_tcb *, int);
void sctp_add_substate(struct sctp_tcb *, int);
uint32_t sctp_ticks_to_msecs(uint32_t);
uint32_t sctp_msecs_to_ticks(uint32_t);
uint32_t sctp_ticks_to_secs(uint32_t);
uint32_t sctp_secs_to_ticks(uint32_t);
#endif /* _KERNEL */
#endif
|
