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: releng/10.2/sys/netinet/sctputil.h 284633 2015-06-20 08:25:27Z tuexen $");
35
36 #ifndef _NETINET_SCTP_UTIL_H_
37 #define _NETINET_SCTP_UTIL_H_
38
39 #if defined(_KERNEL) || defined(__Userspace__)
40
41 #define SCTP_READ_LOCK_HELD 1
42 #define SCTP_READ_LOCK_NOT_HELD 0
43
44 #ifdef SCTP_ASOCLOG_OF_TSNS
45 void sctp_print_out_track_log(struct sctp_tcb *stcb);
46
47 #endif
48
49 #ifdef SCTP_MBUF_LOGGING
50 struct mbuf *sctp_m_free(struct mbuf *m);
51 void sctp_m_freem(struct mbuf *m);
52
53 #else
54 #define sctp_m_free m_free
55 #define sctp_m_freem m_freem
56 #endif
57
58 #if defined(SCTP_LOCAL_TRACE_BUF) || defined(__APPLE__)
59 void
60 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);
61
62 #endif
63
64 #define sctp_get_associd(stcb) ((sctp_assoc_t)stcb->asoc.assoc_id)
65
66
67 /*
68 * Function prototypes
69 */
70 uint32_t
71 sctp_get_ifa_hash_val(struct sockaddr *addr);
72
73 struct sctp_ifa *
74 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr, int hold_lock);
75
76 struct sctp_ifa *
77 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock);
78
79 uint32_t sctp_select_initial_TSN(struct sctp_pcb *);
80
81 uint32_t sctp_select_a_tag(struct sctp_inpcb *, uint16_t lport, uint16_t rport, int);
82
83 int sctp_init_asoc(struct sctp_inpcb *, struct sctp_tcb *, uint32_t, uint32_t);
84
85 void sctp_fill_random_store(struct sctp_pcb *);
86
87 void
88 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin,
89 uint16_t numberout, int flag);
90 void
91 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag);
92
93 void
94 sctp_timer_start(int, struct sctp_inpcb *, struct sctp_tcb *,
95 struct sctp_nets *);
96
97 void
98 sctp_timer_stop(int, struct sctp_inpcb *, struct sctp_tcb *,
99 struct sctp_nets *, uint32_t);
100
101 int
102 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id);
103
104 void
105 sctp_mtu_size_reset(struct sctp_inpcb *, struct sctp_association *, uint32_t);
106
107 void
108 sctp_add_to_readq(struct sctp_inpcb *inp,
109 struct sctp_tcb *stcb,
110 struct sctp_queued_to_read *control,
111 struct sockbuf *sb,
112 int end,
113 int inpread_locked,
114 int so_locked
115 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
116 SCTP_UNUSED
117 #endif
118 );
119
120 int
121 sctp_append_to_readq(struct sctp_inpcb *inp,
122 struct sctp_tcb *stcb,
123 struct sctp_queued_to_read *control,
124 struct mbuf *m,
125 int end,
126 int new_cumack,
127 struct sockbuf *sb);
128
129
130 void sctp_iterator_worker(void);
131
132 uint32_t sctp_get_prev_mtu(uint32_t);
133 uint32_t sctp_get_next_mtu(uint32_t);
134
135 void
136 sctp_timeout_handler(void *);
137
138 uint32_t
139 sctp_calculate_rto(struct sctp_tcb *, struct sctp_association *,
140 struct sctp_nets *, struct timeval *, int, int);
141
142 uint32_t sctp_calculate_len(struct mbuf *);
143
144 caddr_t sctp_m_getptr(struct mbuf *, int, int, uint8_t *);
145
146 struct sctp_paramhdr *
147 sctp_get_next_param(struct mbuf *, int,
148 struct sctp_paramhdr *, int);
149
150 struct mbuf *
151 sctp_add_pad_tombuf(struct mbuf *, int);
152
153 struct mbuf *
154 sctp_pad_lastmbuf(struct mbuf *, int, struct mbuf *);
155
156 void
157 sctp_ulp_notify(uint32_t, struct sctp_tcb *, uint32_t, void *, int
158 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
159 SCTP_UNUSED
160 #endif
161 );
162
163 void
164 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
165 struct sctp_inpcb *new_inp,
166 struct sctp_tcb *stcb, int waitflags);
167
168
169 void sctp_stop_timers_for_shutdown(struct sctp_tcb *);
170
171 void
172 sctp_report_all_outbound(struct sctp_tcb *, uint16_t, int, int
173 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
174 SCTP_UNUSED
175 #endif
176 );
177
178 int sctp_expand_mapping_array(struct sctp_association *, uint32_t);
179
180 void
181 sctp_abort_notification(struct sctp_tcb *, uint8_t, uint16_t,
182 struct sctp_abort_chunk *, int
183 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
184 SCTP_UNUSED
185 #endif
186 );
187
188 /* We abort responding to an IP packet for some reason */
189 void
190 sctp_abort_association(struct sctp_inpcb *, struct sctp_tcb *, struct mbuf *,
191 int, struct sockaddr *, struct sockaddr *,
192 struct sctphdr *, struct mbuf *,
193 uint8_t, uint32_t,
194 uint32_t, uint16_t);
195
196
197 /* We choose to abort via user input */
198 void
199 sctp_abort_an_association(struct sctp_inpcb *, struct sctp_tcb *,
200 struct mbuf *, int
201 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
202 SCTP_UNUSED
203 #endif
204 );
205
206 void
207 sctp_handle_ootb(struct mbuf *, int, int,
208 struct sockaddr *, struct sockaddr *,
209 struct sctphdr *, struct sctp_inpcb *,
210 struct mbuf *,
211 uint8_t, uint32_t, uint16_t,
212 uint32_t, uint16_t);
213
214 int
215 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
216 int totaddr, int *error);
217
218 struct sctp_tcb *
219 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
220 int *totaddr, int *num_v4, int *num_v6, int *error, int limit, int *bad_addr);
221
222 int sctp_is_there_an_abort_here(struct mbuf *, int, uint32_t *);
223
224 #ifdef INET6
225 uint32_t sctp_is_same_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
226
227 struct sockaddr_in6 *
228 sctp_recover_scope(struct sockaddr_in6 *, struct sockaddr_in6 *);
229
230 #define sctp_recover_scope_mac(addr, store) do { \
231 if ((addr->sin6_family == AF_INET6) && \
232 (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr))) { \
233 *store = *addr; \
234 if (addr->sin6_scope_id == 0) { \
235 if (!sa6_recoverscope(store)) { \
236 addr = store; \
237 } \
238 } else { \
239 in6_clearscope(&addr->sin6_addr); \
240 addr = store; \
241 } \
242 } \
243 } while (0)
244 #endif
245
246 int sctp_cmpaddr(struct sockaddr *, struct sockaddr *);
247
248 void sctp_print_address(struct sockaddr *);
249
250 int
251 sctp_release_pr_sctp_chunk(struct sctp_tcb *, struct sctp_tmit_chunk *,
252 uint8_t, int
253 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
254 SCTP_UNUSED
255 #endif
256 );
257
258 struct mbuf *sctp_generate_cause(uint16_t, char *);
259 struct mbuf *sctp_generate_no_user_data_cause(uint32_t);
260
261 void
262 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
263 struct sockaddr *sa, sctp_assoc_t assoc_id,
264 uint32_t vrf_id, int *error, void *p);
265 void
266 sctp_bindx_delete_address(struct sctp_inpcb *inp,
267 struct sockaddr *sa, sctp_assoc_t assoc_id,
268 uint32_t vrf_id, int *error);
269
270 int sctp_local_addr_count(struct sctp_tcb *stcb);
271
272 #ifdef SCTP_MBCNT_LOGGING
273 void
274 sctp_free_bufspace(struct sctp_tcb *, struct sctp_association *,
275 struct sctp_tmit_chunk *, int);
276
277 #else
278 #define sctp_free_bufspace(stcb, asoc, tp1, chk_cnt) \
279 do { \
280 if (tp1->data != NULL) { \
281 atomic_subtract_int(&((asoc)->chunks_on_out_queue), chk_cnt); \
282 if ((asoc)->total_output_queue_size >= tp1->book_size) { \
283 atomic_subtract_int(&((asoc)->total_output_queue_size), tp1->book_size); \
284 } else { \
285 (asoc)->total_output_queue_size = 0; \
286 } \
287 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
288 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
289 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) { \
290 atomic_subtract_int(&((stcb)->sctp_socket->so_snd.sb_cc), tp1->book_size); \
291 } else { \
292 stcb->sctp_socket->so_snd.sb_cc = 0; \
293 } \
294 } \
295 } \
296 } while (0)
297
298 #endif
299
300 #define sctp_free_spbufspace(stcb, asoc, sp) \
301 do { \
302 if (sp->data != NULL) { \
303 if ((asoc)->total_output_queue_size >= sp->length) { \
304 atomic_subtract_int(&(asoc)->total_output_queue_size, sp->length); \
305 } else { \
306 (asoc)->total_output_queue_size = 0; \
307 } \
308 if (stcb->sctp_socket && ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
309 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
310 if (stcb->sctp_socket->so_snd.sb_cc >= sp->length) { \
311 atomic_subtract_int(&stcb->sctp_socket->so_snd.sb_cc,sp->length); \
312 } else { \
313 stcb->sctp_socket->so_snd.sb_cc = 0; \
314 } \
315 } \
316 } \
317 } while (0)
318
319 #define sctp_snd_sb_alloc(stcb, sz) \
320 do { \
321 atomic_add_int(&stcb->asoc.total_output_queue_size,sz); \
322 if ((stcb->sctp_socket != NULL) && \
323 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) || \
324 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) { \
325 atomic_add_int(&stcb->sctp_socket->so_snd.sb_cc,sz); \
326 } \
327 } while (0)
328
329 /* functions to start/stop udp tunneling */
330 void sctp_over_udp_stop(void);
331 int sctp_over_udp_start(void);
332
333 int
334 sctp_soreceive(struct socket *so, struct sockaddr **psa,
335 struct uio *uio,
336 struct mbuf **mp0,
337 struct mbuf **controlp,
338 int *flagsp);
339
340 void
341 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d);
342
343 void
344 sctp_wakeup_log(struct sctp_tcb *stcb,
345 uint32_t wake_cnt, int from);
346
347 void sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t, uint16_t, uint16_t, int);
348
349 void sctp_log_nagle_event(struct sctp_tcb *stcb, int action);
350
351
352 #ifdef SCTP_MBUF_LOGGING
353 void
354 sctp_log_mb(struct mbuf *m, int from);
355
356 void
357 sctp_log_mbc(struct mbuf *m, int from);
358
359 #endif
360
361 void
362 sctp_sblog(struct sockbuf *sb,
363 struct sctp_tcb *stcb, int from, int incr);
364
365 void
366 sctp_log_strm_del(struct sctp_queued_to_read *control,
367 struct sctp_queued_to_read *poschk,
368 int from);
369 void sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *, int, uint8_t);
370 void rto_logging(struct sctp_nets *net, int from);
371
372 void sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc);
373
374 void sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from);
375 void sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *, int, int, uint8_t);
376 void sctp_log_block(uint8_t, struct sctp_association *, int);
377 void sctp_log_rwnd(uint8_t, uint32_t, uint32_t, uint32_t);
378 void sctp_log_rwnd_set(uint8_t, uint32_t, uint32_t, uint32_t, uint32_t);
379 int sctp_fill_stat_log(void *, size_t *);
380 void sctp_log_fr(uint32_t, uint32_t, uint32_t, int);
381 void sctp_log_sack(uint32_t, uint32_t, uint32_t, uint16_t, uint16_t, int);
382 void sctp_log_map(uint32_t, uint32_t, uint32_t, int);
383 void sctp_print_mapping_array(struct sctp_association *asoc);
384 void sctp_clr_stat_log(void);
385
386
387 #ifdef SCTP_AUDITING_ENABLED
388 void
389 sctp_auditing(int, struct sctp_inpcb *, struct sctp_tcb *,
390 struct sctp_nets *);
391 void sctp_audit_log(uint8_t, uint8_t);
392
393 #endif
394 #endif /* _KERNEL */
395 #endif
Cache object: f54365b2aeeaf5c1f6ebb0c440d235c0
|