2 * SPDX-License-Identifier: BSD-3-Clause
4 * Copyright (c) 2001-2008, 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.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * a) Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
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.
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.
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.
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <netinet/sctp_os.h>
39 #include <netinet/sctp_pcb.h>
40 #include <netinet/sctputil.h>
41 #include <netinet/sctp_var.h>
42 #include <netinet/sctp_sysctl.h>
44 #include <netinet6/sctp6_var.h>
46 #include <netinet/sctp_header.h>
47 #include <netinet/sctp_output.h>
48 #include <netinet/sctp_uio.h>
49 #include <netinet/sctp_timer.h>
50 #include <netinet/sctp_indata.h>
51 #include <netinet/sctp_auth.h>
52 #include <netinet/sctp_asconf.h>
53 #include <netinet/sctp_bsd_addr.h>
54 #include <netinet/sctp_kdtrace.h>
55 #if defined(INET6) || defined(INET)
56 #include <netinet/tcp_var.h>
58 #include <netinet/udp.h>
59 #include <netinet/udp_var.h>
62 #include <netinet/icmp6.h>
67 #define KTR_SCTP KTR_SUBSYS
70 extern const struct sctp_cc_functions sctp_cc_functions[];
71 extern const struct sctp_ss_functions sctp_ss_functions[];
74 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr)
76 #if defined(SCTP_LOCAL_TRACE_BUF)
77 struct sctp_cwnd_log sctp_clog;
79 sctp_clog.x.sb.stcb = stcb;
80 sctp_clog.x.sb.so_sbcc = sb->sb_cc;
82 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
84 sctp_clog.x.sb.stcb_sbcc = 0;
85 sctp_clog.x.sb.incr = incr;
86 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
89 sctp_clog.x.misc.log1,
90 sctp_clog.x.misc.log2,
91 sctp_clog.x.misc.log3,
92 sctp_clog.x.misc.log4);
97 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
99 #if defined(SCTP_LOCAL_TRACE_BUF)
100 struct sctp_cwnd_log sctp_clog;
102 sctp_clog.x.close.inp = (void *)inp;
103 sctp_clog.x.close.sctp_flags = inp->sctp_flags;
105 sctp_clog.x.close.stcb = (void *)stcb;
106 sctp_clog.x.close.state = (uint16_t)stcb->asoc.state;
108 sctp_clog.x.close.stcb = 0;
109 sctp_clog.x.close.state = 0;
111 sctp_clog.x.close.loc = loc;
112 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
113 SCTP_LOG_EVENT_CLOSE,
115 sctp_clog.x.misc.log1,
116 sctp_clog.x.misc.log2,
117 sctp_clog.x.misc.log3,
118 sctp_clog.x.misc.log4);
123 rto_logging(struct sctp_nets *net, int from)
125 #if defined(SCTP_LOCAL_TRACE_BUF)
126 struct sctp_cwnd_log sctp_clog;
128 memset(&sctp_clog, 0, sizeof(sctp_clog));
129 sctp_clog.x.rto.net = (void *)net;
130 sctp_clog.x.rto.rtt = net->rtt / 1000;
131 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
134 sctp_clog.x.misc.log1,
135 sctp_clog.x.misc.log2,
136 sctp_clog.x.misc.log3,
137 sctp_clog.x.misc.log4);
142 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
144 #if defined(SCTP_LOCAL_TRACE_BUF)
145 struct sctp_cwnd_log sctp_clog;
147 sctp_clog.x.strlog.stcb = stcb;
148 sctp_clog.x.strlog.n_tsn = tsn;
149 sctp_clog.x.strlog.n_sseq = sseq;
150 sctp_clog.x.strlog.e_tsn = 0;
151 sctp_clog.x.strlog.e_sseq = 0;
152 sctp_clog.x.strlog.strm = stream;
153 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
156 sctp_clog.x.misc.log1,
157 sctp_clog.x.misc.log2,
158 sctp_clog.x.misc.log3,
159 sctp_clog.x.misc.log4);
164 sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
166 #if defined(SCTP_LOCAL_TRACE_BUF)
167 struct sctp_cwnd_log sctp_clog;
169 sctp_clog.x.nagle.stcb = (void *)stcb;
170 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
171 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
172 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
173 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
174 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
175 SCTP_LOG_EVENT_NAGLE,
177 sctp_clog.x.misc.log1,
178 sctp_clog.x.misc.log2,
179 sctp_clog.x.misc.log3,
180 sctp_clog.x.misc.log4);
185 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
187 #if defined(SCTP_LOCAL_TRACE_BUF)
188 struct sctp_cwnd_log sctp_clog;
190 sctp_clog.x.sack.cumack = cumack;
191 sctp_clog.x.sack.oldcumack = old_cumack;
192 sctp_clog.x.sack.tsn = tsn;
193 sctp_clog.x.sack.numGaps = gaps;
194 sctp_clog.x.sack.numDups = dups;
195 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
198 sctp_clog.x.misc.log1,
199 sctp_clog.x.misc.log2,
200 sctp_clog.x.misc.log3,
201 sctp_clog.x.misc.log4);
206 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
208 #if defined(SCTP_LOCAL_TRACE_BUF)
209 struct sctp_cwnd_log sctp_clog;
211 memset(&sctp_clog, 0, sizeof(sctp_clog));
212 sctp_clog.x.map.base = map;
213 sctp_clog.x.map.cum = cum;
214 sctp_clog.x.map.high = high;
215 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
218 sctp_clog.x.misc.log1,
219 sctp_clog.x.misc.log2,
220 sctp_clog.x.misc.log3,
221 sctp_clog.x.misc.log4);
226 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from)
228 #if defined(SCTP_LOCAL_TRACE_BUF)
229 struct sctp_cwnd_log sctp_clog;
231 memset(&sctp_clog, 0, sizeof(sctp_clog));
232 sctp_clog.x.fr.largest_tsn = biggest_tsn;
233 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
234 sctp_clog.x.fr.tsn = tsn;
235 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
238 sctp_clog.x.misc.log1,
239 sctp_clog.x.misc.log2,
240 sctp_clog.x.misc.log3,
241 sctp_clog.x.misc.log4);
245 #ifdef SCTP_MBUF_LOGGING
247 sctp_log_mb(struct mbuf *m, int from)
249 #if defined(SCTP_LOCAL_TRACE_BUF)
250 struct sctp_cwnd_log sctp_clog;
252 sctp_clog.x.mb.mp = m;
253 sctp_clog.x.mb.mbuf_flags = (uint8_t)(SCTP_BUF_GET_FLAGS(m));
254 sctp_clog.x.mb.size = (uint16_t)(SCTP_BUF_LEN(m));
255 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
256 if (SCTP_BUF_IS_EXTENDED(m)) {
257 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
258 sctp_clog.x.mb.refcnt = (uint8_t)(SCTP_BUF_EXTEND_REFCNT(m));
260 sctp_clog.x.mb.ext = 0;
261 sctp_clog.x.mb.refcnt = 0;
263 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
266 sctp_clog.x.misc.log1,
267 sctp_clog.x.misc.log2,
268 sctp_clog.x.misc.log3,
269 sctp_clog.x.misc.log4);
274 sctp_log_mbc(struct mbuf *m, int from)
278 for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
279 sctp_log_mb(mat, from);
285 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from)
287 #if defined(SCTP_LOCAL_TRACE_BUF)
288 struct sctp_cwnd_log sctp_clog;
290 if (control == NULL) {
291 SCTP_PRINTF("Gak log of NULL?\n");
294 sctp_clog.x.strlog.stcb = control->stcb;
295 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
296 sctp_clog.x.strlog.n_sseq = (uint16_t)control->mid;
297 sctp_clog.x.strlog.strm = control->sinfo_stream;
298 if (poschk != NULL) {
299 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
300 sctp_clog.x.strlog.e_sseq = (uint16_t)poschk->mid;
302 sctp_clog.x.strlog.e_tsn = 0;
303 sctp_clog.x.strlog.e_sseq = 0;
305 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
308 sctp_clog.x.misc.log1,
309 sctp_clog.x.misc.log2,
310 sctp_clog.x.misc.log3,
311 sctp_clog.x.misc.log4);
316 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
318 #if defined(SCTP_LOCAL_TRACE_BUF)
319 struct sctp_cwnd_log sctp_clog;
321 sctp_clog.x.cwnd.net = net;
322 if (stcb->asoc.send_queue_cnt > 255)
323 sctp_clog.x.cwnd.cnt_in_send = 255;
325 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
326 if (stcb->asoc.stream_queue_cnt > 255)
327 sctp_clog.x.cwnd.cnt_in_str = 255;
329 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
332 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
333 sctp_clog.x.cwnd.inflight = net->flight_size;
334 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
335 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
336 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
338 if (SCTP_CWNDLOG_PRESEND == from) {
339 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
341 sctp_clog.x.cwnd.cwnd_augment = augment;
342 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
345 sctp_clog.x.misc.log1,
346 sctp_clog.x.misc.log2,
347 sctp_clog.x.misc.log3,
348 sctp_clog.x.misc.log4);
353 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
355 #if defined(SCTP_LOCAL_TRACE_BUF)
356 struct sctp_cwnd_log sctp_clog;
358 memset(&sctp_clog, 0, sizeof(sctp_clog));
360 sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
363 sctp_clog.x.lock.sock = (void *)NULL;
365 sctp_clog.x.lock.inp = (void *)inp;
367 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
369 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
372 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
373 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
375 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
376 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
378 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
379 if (inp && (inp->sctp_socket)) {
380 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
381 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
382 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
384 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
385 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
386 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
388 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
391 sctp_clog.x.misc.log1,
392 sctp_clog.x.misc.log2,
393 sctp_clog.x.misc.log3,
394 sctp_clog.x.misc.log4);
399 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
401 #if defined(SCTP_LOCAL_TRACE_BUF)
402 struct sctp_cwnd_log sctp_clog;
404 memset(&sctp_clog, 0, sizeof(sctp_clog));
405 sctp_clog.x.cwnd.net = net;
406 sctp_clog.x.cwnd.cwnd_new_value = error;
407 sctp_clog.x.cwnd.inflight = net->flight_size;
408 sctp_clog.x.cwnd.cwnd_augment = burst;
409 if (stcb->asoc.send_queue_cnt > 255)
410 sctp_clog.x.cwnd.cnt_in_send = 255;
412 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
413 if (stcb->asoc.stream_queue_cnt > 255)
414 sctp_clog.x.cwnd.cnt_in_str = 255;
416 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
417 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
418 SCTP_LOG_EVENT_MAXBURST,
420 sctp_clog.x.misc.log1,
421 sctp_clog.x.misc.log2,
422 sctp_clog.x.misc.log3,
423 sctp_clog.x.misc.log4);
428 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
430 #if defined(SCTP_LOCAL_TRACE_BUF)
431 struct sctp_cwnd_log sctp_clog;
433 sctp_clog.x.rwnd.rwnd = peers_rwnd;
434 sctp_clog.x.rwnd.send_size = snd_size;
435 sctp_clog.x.rwnd.overhead = overhead;
436 sctp_clog.x.rwnd.new_rwnd = 0;
437 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
440 sctp_clog.x.misc.log1,
441 sctp_clog.x.misc.log2,
442 sctp_clog.x.misc.log3,
443 sctp_clog.x.misc.log4);
448 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
450 #if defined(SCTP_LOCAL_TRACE_BUF)
451 struct sctp_cwnd_log sctp_clog;
453 sctp_clog.x.rwnd.rwnd = peers_rwnd;
454 sctp_clog.x.rwnd.send_size = flight_size;
455 sctp_clog.x.rwnd.overhead = overhead;
456 sctp_clog.x.rwnd.new_rwnd = a_rwndval;
457 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
460 sctp_clog.x.misc.log1,
461 sctp_clog.x.misc.log2,
462 sctp_clog.x.misc.log3,
463 sctp_clog.x.misc.log4);
467 #ifdef SCTP_MBCNT_LOGGING
469 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
471 #if defined(SCTP_LOCAL_TRACE_BUF)
472 struct sctp_cwnd_log sctp_clog;
474 sctp_clog.x.mbcnt.total_queue_size = total_oq;
475 sctp_clog.x.mbcnt.size_change = book;
476 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
477 sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
478 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
479 SCTP_LOG_EVENT_MBCNT,
481 sctp_clog.x.misc.log1,
482 sctp_clog.x.misc.log2,
483 sctp_clog.x.misc.log3,
484 sctp_clog.x.misc.log4);
490 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
492 #if defined(SCTP_LOCAL_TRACE_BUF)
493 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
501 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from)
503 #if defined(SCTP_LOCAL_TRACE_BUF)
504 struct sctp_cwnd_log sctp_clog;
506 sctp_clog.x.wake.stcb = (void *)stcb;
507 sctp_clog.x.wake.wake_cnt = wake_cnt;
508 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
509 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
510 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
512 if (stcb->asoc.stream_queue_cnt < 0xff)
513 sctp_clog.x.wake.stream_qcnt = (uint8_t)stcb->asoc.stream_queue_cnt;
515 sctp_clog.x.wake.stream_qcnt = 0xff;
517 if (stcb->asoc.chunks_on_out_queue < 0xff)
518 sctp_clog.x.wake.chunks_on_oque = (uint8_t)stcb->asoc.chunks_on_out_queue;
520 sctp_clog.x.wake.chunks_on_oque = 0xff;
522 sctp_clog.x.wake.sctpflags = 0;
523 /* set in the defered mode stuff */
524 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
525 sctp_clog.x.wake.sctpflags |= 1;
526 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
527 sctp_clog.x.wake.sctpflags |= 2;
528 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
529 sctp_clog.x.wake.sctpflags |= 4;
530 /* what about the sb */
531 if (stcb->sctp_socket) {
532 struct socket *so = stcb->sctp_socket;
534 sctp_clog.x.wake.sbflags = (uint8_t)((so->so_snd.sb_flags & 0x00ff));
536 sctp_clog.x.wake.sbflags = 0xff;
538 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
541 sctp_clog.x.misc.log1,
542 sctp_clog.x.misc.log2,
543 sctp_clog.x.misc.log3,
544 sctp_clog.x.misc.log4);
549 sctp_log_block(uint8_t from, struct sctp_association *asoc, ssize_t sendlen)
551 #if defined(SCTP_LOCAL_TRACE_BUF)
552 struct sctp_cwnd_log sctp_clog;
554 sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
555 sctp_clog.x.blk.send_sent_qcnt = (uint16_t)(asoc->send_queue_cnt + asoc->sent_queue_cnt);
556 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
557 sctp_clog.x.blk.stream_qcnt = (uint16_t)asoc->stream_queue_cnt;
558 sctp_clog.x.blk.chunks_on_oque = (uint16_t)asoc->chunks_on_out_queue;
559 sctp_clog.x.blk.flight_size = (uint16_t)(asoc->total_flight / 1024);
560 sctp_clog.x.blk.sndlen = (uint32_t)sendlen;
561 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
562 SCTP_LOG_EVENT_BLOCK,
564 sctp_clog.x.misc.log1,
565 sctp_clog.x.misc.log2,
566 sctp_clog.x.misc.log3,
567 sctp_clog.x.misc.log4);
572 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
574 /* May need to fix this if ktrdump does not work */
578 #ifdef SCTP_AUDITING_ENABLED
579 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
580 static int sctp_audit_indx = 0;
584 sctp_print_audit_report(void)
590 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
591 if ((sctp_audit_data[i][0] == 0xe0) &&
592 (sctp_audit_data[i][1] == 0x01)) {
595 } else if (sctp_audit_data[i][0] == 0xf0) {
598 } else if ((sctp_audit_data[i][0] == 0xc0) &&
599 (sctp_audit_data[i][1] == 0x01)) {
603 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
604 (uint32_t)sctp_audit_data[i][1]);
609 for (i = 0; i < sctp_audit_indx; i++) {
610 if ((sctp_audit_data[i][0] == 0xe0) &&
611 (sctp_audit_data[i][1] == 0x01)) {
614 } else if (sctp_audit_data[i][0] == 0xf0) {
617 } else if ((sctp_audit_data[i][0] == 0xc0) &&
618 (sctp_audit_data[i][1] == 0x01)) {
622 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
623 (uint32_t)sctp_audit_data[i][1]);
632 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
633 struct sctp_nets *net)
635 int resend_cnt, tot_out, rep, tot_book_cnt;
636 struct sctp_nets *lnet;
637 struct sctp_tmit_chunk *chk;
639 sctp_audit_data[sctp_audit_indx][0] = 0xAA;
640 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
642 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
646 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
647 sctp_audit_data[sctp_audit_indx][1] = 0x01;
649 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
655 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
656 sctp_audit_data[sctp_audit_indx][1] = 0x02;
658 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
663 sctp_audit_data[sctp_audit_indx][0] = 0xA1;
664 sctp_audit_data[sctp_audit_indx][1] =
665 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
667 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
672 resend_cnt = tot_out = 0;
673 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
674 if (chk->sent == SCTP_DATAGRAM_RESEND) {
676 } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
677 tot_out += chk->book_size;
681 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
682 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
683 sctp_audit_data[sctp_audit_indx][1] = 0xA1;
685 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
688 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
689 resend_cnt, stcb->asoc.sent_queue_retran_cnt);
691 stcb->asoc.sent_queue_retran_cnt = resend_cnt;
692 sctp_audit_data[sctp_audit_indx][0] = 0xA2;
693 sctp_audit_data[sctp_audit_indx][1] =
694 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
696 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
700 if (tot_out != stcb->asoc.total_flight) {
701 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
702 sctp_audit_data[sctp_audit_indx][1] = 0xA2;
704 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
708 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
709 (int)stcb->asoc.total_flight);
710 stcb->asoc.total_flight = tot_out;
712 if (tot_book_cnt != stcb->asoc.total_flight_count) {
713 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
714 sctp_audit_data[sctp_audit_indx][1] = 0xA5;
716 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
720 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
722 stcb->asoc.total_flight_count = tot_book_cnt;
725 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
726 tot_out += lnet->flight_size;
728 if (tot_out != stcb->asoc.total_flight) {
729 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
730 sctp_audit_data[sctp_audit_indx][1] = 0xA3;
732 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
736 SCTP_PRINTF("real flight:%d net total was %d\n",
737 stcb->asoc.total_flight, tot_out);
738 /* now corrective action */
739 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
742 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
743 if ((chk->whoTo == lnet) &&
744 (chk->sent < SCTP_DATAGRAM_RESEND)) {
745 tot_out += chk->book_size;
748 if (lnet->flight_size != tot_out) {
749 SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
750 (void *)lnet, lnet->flight_size,
752 lnet->flight_size = tot_out;
757 sctp_print_audit_report();
762 sctp_audit_log(uint8_t ev, uint8_t fd)
765 sctp_audit_data[sctp_audit_indx][0] = ev;
766 sctp_audit_data[sctp_audit_indx][1] = fd;
768 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
776 * sctp_stop_timers_for_shutdown() should be called
777 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
778 * state to make sure that all timers are stopped.
781 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
783 struct sctp_inpcb *inp;
784 struct sctp_nets *net;
788 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, inp, stcb, NULL,
789 SCTP_FROM_SCTPUTIL + SCTP_LOC_12);
790 sctp_timer_stop(SCTP_TIMER_TYPE_STRRESET, inp, stcb, NULL,
791 SCTP_FROM_SCTPUTIL + SCTP_LOC_13);
792 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, inp, stcb, NULL,
793 SCTP_FROM_SCTPUTIL + SCTP_LOC_14);
794 sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL,
795 SCTP_FROM_SCTPUTIL + SCTP_LOC_15);
796 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
797 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
798 SCTP_FROM_SCTPUTIL + SCTP_LOC_16);
799 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
800 SCTP_FROM_SCTPUTIL + SCTP_LOC_17);
805 sctp_stop_association_timers(struct sctp_tcb *stcb, bool stop_assoc_kill_timer)
807 struct sctp_inpcb *inp;
808 struct sctp_nets *net;
811 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, inp, stcb, NULL,
812 SCTP_FROM_SCTPUTIL + SCTP_LOC_18);
813 sctp_timer_stop(SCTP_TIMER_TYPE_STRRESET, inp, stcb, NULL,
814 SCTP_FROM_SCTPUTIL + SCTP_LOC_19);
815 if (stop_assoc_kill_timer) {
816 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
817 SCTP_FROM_SCTPUTIL + SCTP_LOC_20);
819 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, inp, stcb, NULL,
820 SCTP_FROM_SCTPUTIL + SCTP_LOC_21);
821 sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL,
822 SCTP_FROM_SCTPUTIL + SCTP_LOC_22);
823 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWNGUARD, inp, stcb, NULL,
824 SCTP_FROM_SCTPUTIL + SCTP_LOC_23);
825 /* Mobility adaptation */
826 sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED, inp, stcb, NULL,
827 SCTP_FROM_SCTPUTIL + SCTP_LOC_24);
828 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
829 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, inp, stcb, net,
830 SCTP_FROM_SCTPUTIL + SCTP_LOC_25);
831 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb, net,
832 SCTP_FROM_SCTPUTIL + SCTP_LOC_26);
833 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWN, inp, stcb, net,
834 SCTP_FROM_SCTPUTIL + SCTP_LOC_27);
835 sctp_timer_stop(SCTP_TIMER_TYPE_COOKIE, inp, stcb, net,
836 SCTP_FROM_SCTPUTIL + SCTP_LOC_28);
837 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWNACK, inp, stcb, net,
838 SCTP_FROM_SCTPUTIL + SCTP_LOC_29);
839 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
840 SCTP_FROM_SCTPUTIL + SCTP_LOC_30);
841 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
842 SCTP_FROM_SCTPUTIL + SCTP_LOC_31);
847 * A list of sizes based on typical mtu's, used only if next hop size not
848 * returned. These values MUST be multiples of 4 and MUST be ordered.
850 static uint32_t sctp_mtu_sizes[] = {
872 * Return the largest MTU in sctp_mtu_sizes smaller than val.
873 * If val is smaller than the minimum, just return the largest
874 * multiple of 4 smaller or equal to val.
875 * Ensure that the result is a multiple of 4.
878 sctp_get_prev_mtu(uint32_t val)
883 if (val <= sctp_mtu_sizes[0]) {
886 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
887 if (val <= sctp_mtu_sizes[i]) {
891 KASSERT((sctp_mtu_sizes[i - 1] & 0x00000003) == 0,
892 ("sctp_mtu_sizes[%u] not a multiple of 4", i - 1));
893 return (sctp_mtu_sizes[i - 1]);
897 * Return the smallest MTU in sctp_mtu_sizes larger than val.
898 * If val is larger than the maximum, just return the largest multiple of 4 smaller
900 * Ensure that the result is a multiple of 4.
903 sctp_get_next_mtu(uint32_t val)
905 /* select another MTU that is just bigger than this one */
909 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
910 if (val < sctp_mtu_sizes[i]) {
911 KASSERT((sctp_mtu_sizes[i] & 0x00000003) == 0,
912 ("sctp_mtu_sizes[%u] not a multiple of 4", i));
913 return (sctp_mtu_sizes[i]);
920 sctp_fill_random_store(struct sctp_pcb *m)
923 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
924 * our counter. The result becomes our good random numbers and we
925 * then setup to give these out. Note that we do no locking to
926 * protect this. This is ok, since if competing folks call this we
927 * will get more gobbled gook in the random store which is what we
928 * want. There is a danger that two guys will use the same random
929 * numbers, but thats ok too since that is random as well :->
932 (void)sctp_hmac(SCTP_HMAC, (uint8_t *)m->random_numbers,
933 sizeof(m->random_numbers), (uint8_t *)&m->random_counter,
934 sizeof(m->random_counter), (uint8_t *)m->random_store);
939 sctp_select_initial_TSN(struct sctp_pcb *inp)
942 * A true implementation should use random selection process to get
943 * the initial stream sequence number, using RFC1750 as a good
948 int store_at, new_store;
950 if (inp->initial_sequence_debug != 0) {
953 ret = inp->initial_sequence_debug;
954 inp->initial_sequence_debug++;
958 store_at = inp->store_at;
959 new_store = store_at + sizeof(uint32_t);
960 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
963 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
966 if (new_store == 0) {
967 /* Refill the random store */
968 sctp_fill_random_store(inp);
970 p = &inp->random_store[store_at];
977 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
983 (void)SCTP_GETTIME_TIMEVAL(&now);
986 x = sctp_select_initial_TSN(&inp->sctp_ep);
991 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
999 sctp_map_assoc_state(int kernel_state)
1003 if (kernel_state & SCTP_STATE_WAS_ABORTED) {
1004 user_state = SCTP_CLOSED;
1005 } else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) {
1006 user_state = SCTP_SHUTDOWN_PENDING;
1008 switch (kernel_state & SCTP_STATE_MASK) {
1009 case SCTP_STATE_EMPTY:
1010 user_state = SCTP_CLOSED;
1012 case SCTP_STATE_INUSE:
1013 user_state = SCTP_CLOSED;
1015 case SCTP_STATE_COOKIE_WAIT:
1016 user_state = SCTP_COOKIE_WAIT;
1018 case SCTP_STATE_COOKIE_ECHOED:
1019 user_state = SCTP_COOKIE_ECHOED;
1021 case SCTP_STATE_OPEN:
1022 user_state = SCTP_ESTABLISHED;
1024 case SCTP_STATE_SHUTDOWN_SENT:
1025 user_state = SCTP_SHUTDOWN_SENT;
1027 case SCTP_STATE_SHUTDOWN_RECEIVED:
1028 user_state = SCTP_SHUTDOWN_RECEIVED;
1030 case SCTP_STATE_SHUTDOWN_ACK_SENT:
1031 user_state = SCTP_SHUTDOWN_ACK_SENT;
1034 user_state = SCTP_CLOSED;
1038 return (user_state);
1042 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1043 uint32_t override_tag, uint32_t vrf_id, uint16_t o_strms)
1045 struct sctp_association *asoc;
1048 * Anything set to zero is taken care of by the allocation routine's
1053 * Up front select what scoping to apply on addresses I tell my peer
1054 * Not sure what to do with these right now, we will need to come up
1055 * with a way to set them. We may need to pass them through from the
1056 * caller in the sctp_aloc_assoc() function.
1059 #if defined(SCTP_DETAILED_STR_STATS)
1064 /* init all variables to a known value. */
1065 SCTP_SET_STATE(stcb, SCTP_STATE_INUSE);
1066 asoc->max_burst = inp->sctp_ep.max_burst;
1067 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
1068 asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
1069 asoc->cookie_life = inp->sctp_ep.def_cookie_life;
1070 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
1071 asoc->ecn_supported = inp->ecn_supported;
1072 asoc->prsctp_supported = inp->prsctp_supported;
1073 asoc->idata_supported = inp->idata_supported;
1074 asoc->auth_supported = inp->auth_supported;
1075 asoc->asconf_supported = inp->asconf_supported;
1076 asoc->reconfig_supported = inp->reconfig_supported;
1077 asoc->nrsack_supported = inp->nrsack_supported;
1078 asoc->pktdrop_supported = inp->pktdrop_supported;
1079 asoc->idata_supported = inp->idata_supported;
1080 asoc->sctp_cmt_pf = (uint8_t)0;
1081 asoc->sctp_frag_point = inp->sctp_frag_point;
1082 asoc->sctp_features = inp->sctp_features;
1083 asoc->default_dscp = inp->sctp_ep.default_dscp;
1084 asoc->max_cwnd = inp->max_cwnd;
1086 if (inp->sctp_ep.default_flowlabel) {
1087 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
1089 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
1090 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
1091 asoc->default_flowlabel &= 0x000fffff;
1092 asoc->default_flowlabel |= 0x80000000;
1094 asoc->default_flowlabel = 0;
1098 asoc->sb_send_resv = 0;
1100 asoc->my_vtag = override_tag;
1102 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
1104 /* Get the nonce tags */
1105 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1106 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1107 asoc->vrf_id = vrf_id;
1109 #ifdef SCTP_ASOCLOG_OF_TSNS
1110 asoc->tsn_in_at = 0;
1111 asoc->tsn_out_at = 0;
1112 asoc->tsn_in_wrapped = 0;
1113 asoc->tsn_out_wrapped = 0;
1114 asoc->cumack_log_at = 0;
1115 asoc->cumack_log_atsnt = 0;
1117 #ifdef SCTP_FS_SPEC_LOG
1121 asoc->assoc_up_sent = 0;
1122 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
1123 sctp_select_initial_TSN(&inp->sctp_ep);
1124 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
1125 /* we are optimisitic here */
1126 asoc->peer_supports_nat = 0;
1127 asoc->sent_queue_retran_cnt = 0;
1130 asoc->last_net_cmt_send_started = NULL;
1132 /* This will need to be adjusted */
1133 asoc->last_acked_seq = asoc->init_seq_number - 1;
1134 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
1135 asoc->asconf_seq_in = asoc->last_acked_seq;
1137 /* here we are different, we hold the next one we expect */
1138 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
1140 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
1141 asoc->initial_rto = inp->sctp_ep.initial_rto;
1143 asoc->default_mtu = inp->sctp_ep.default_mtu;
1144 asoc->max_init_times = inp->sctp_ep.max_init_times;
1145 asoc->max_send_times = inp->sctp_ep.max_send_times;
1146 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
1147 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
1148 asoc->free_chunk_cnt = 0;
1150 asoc->iam_blocking = 0;
1151 asoc->context = inp->sctp_context;
1152 asoc->local_strreset_support = inp->local_strreset_support;
1153 asoc->def_send = inp->def_send;
1154 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1155 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
1156 asoc->pr_sctp_cnt = 0;
1157 asoc->total_output_queue_size = 0;
1159 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1160 asoc->scope.ipv6_addr_legal = 1;
1161 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1162 asoc->scope.ipv4_addr_legal = 1;
1164 asoc->scope.ipv4_addr_legal = 0;
1167 asoc->scope.ipv6_addr_legal = 0;
1168 asoc->scope.ipv4_addr_legal = 1;
1171 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1172 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1174 asoc->smallest_mtu = inp->sctp_frag_point;
1175 asoc->minrto = inp->sctp_ep.sctp_minrto;
1176 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1178 asoc->stream_locked_on = 0;
1179 asoc->ecn_echo_cnt_onq = 0;
1180 asoc->stream_locked = 0;
1182 asoc->send_sack = 1;
1184 LIST_INIT(&asoc->sctp_restricted_addrs);
1186 TAILQ_INIT(&asoc->nets);
1187 TAILQ_INIT(&asoc->pending_reply_queue);
1188 TAILQ_INIT(&asoc->asconf_ack_sent);
1189 /* Setup to fill the hb random cache at first HB */
1190 asoc->hb_random_idx = 4;
1192 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1194 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1195 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1197 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1198 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1201 * Now the stream parameters, here we allocate space for all streams
1202 * that we request by default.
1204 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1206 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1207 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1209 if (asoc->strmout == NULL) {
1210 /* big trouble no memory */
1211 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1214 for (i = 0; i < asoc->streamoutcnt; i++) {
1216 * inbound side must be set to 0xffff, also NOTE when we get
1217 * the INIT-ACK back (for INIT sender) we MUST reduce the
1218 * count (streamoutcnt) but first check if we sent to any of
1219 * the upper streams that were dropped (if some were). Those
1220 * that were dropped must be notified to the upper layer as
1223 asoc->strmout[i].next_mid_ordered = 0;
1224 asoc->strmout[i].next_mid_unordered = 0;
1225 TAILQ_INIT(&asoc->strmout[i].outqueue);
1226 asoc->strmout[i].chunks_on_queues = 0;
1227 #if defined(SCTP_DETAILED_STR_STATS)
1228 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1229 asoc->strmout[i].abandoned_sent[j] = 0;
1230 asoc->strmout[i].abandoned_unsent[j] = 0;
1233 asoc->strmout[i].abandoned_sent[0] = 0;
1234 asoc->strmout[i].abandoned_unsent[0] = 0;
1236 asoc->strmout[i].sid = i;
1237 asoc->strmout[i].last_msg_incomplete = 0;
1238 asoc->strmout[i].state = SCTP_STREAM_OPENING;
1239 asoc->ss_functions.sctp_ss_init_stream(stcb, &asoc->strmout[i], NULL);
1241 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1243 /* Now the mapping array */
1244 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1245 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1247 if (asoc->mapping_array == NULL) {
1248 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1249 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1252 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1253 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1255 if (asoc->nr_mapping_array == NULL) {
1256 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1257 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1258 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1261 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1263 /* Now the init of the other outqueues */
1264 TAILQ_INIT(&asoc->free_chunks);
1265 TAILQ_INIT(&asoc->control_send_queue);
1266 TAILQ_INIT(&asoc->asconf_send_queue);
1267 TAILQ_INIT(&asoc->send_queue);
1268 TAILQ_INIT(&asoc->sent_queue);
1269 TAILQ_INIT(&asoc->resetHead);
1270 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1271 TAILQ_INIT(&asoc->asconf_queue);
1272 /* authentication fields */
1273 asoc->authinfo.random = NULL;
1274 asoc->authinfo.active_keyid = 0;
1275 asoc->authinfo.assoc_key = NULL;
1276 asoc->authinfo.assoc_keyid = 0;
1277 asoc->authinfo.recv_key = NULL;
1278 asoc->authinfo.recv_keyid = 0;
1279 LIST_INIT(&asoc->shared_keys);
1280 asoc->marked_retrans = 0;
1281 asoc->port = inp->sctp_ep.port;
1285 asoc->timoshutdown = 0;
1286 asoc->timoheartbeat = 0;
1287 asoc->timocookie = 0;
1288 asoc->timoshutdownack = 0;
1289 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1290 asoc->discontinuity_time = asoc->start_time;
1291 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1292 asoc->abandoned_unsent[i] = 0;
1293 asoc->abandoned_sent[i] = 0;
1296 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1297 * freed later when the association is freed.
1303 sctp_print_mapping_array(struct sctp_association *asoc)
1305 unsigned int i, limit;
1307 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1308 asoc->mapping_array_size,
1309 asoc->mapping_array_base_tsn,
1310 asoc->cumulative_tsn,
1311 asoc->highest_tsn_inside_map,
1312 asoc->highest_tsn_inside_nr_map);
1313 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1314 if (asoc->mapping_array[limit - 1] != 0) {
1318 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1319 for (i = 0; i < limit; i++) {
1320 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1324 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1325 if (asoc->nr_mapping_array[limit - 1]) {
1329 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1330 for (i = 0; i < limit; i++) {
1331 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1338 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1340 /* mapping array needs to grow */
1341 uint8_t *new_array1, *new_array2;
1344 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1345 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1346 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1347 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1348 /* can't get more, forget it */
1349 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1351 SCTP_FREE(new_array1, SCTP_M_MAP);
1354 SCTP_FREE(new_array2, SCTP_M_MAP);
1358 memset(new_array1, 0, new_size);
1359 memset(new_array2, 0, new_size);
1360 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1361 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1362 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1363 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1364 asoc->mapping_array = new_array1;
1365 asoc->nr_mapping_array = new_array2;
1366 asoc->mapping_array_size = new_size;
1372 sctp_iterator_work(struct sctp_iterator *it)
1374 struct epoch_tracker et;
1375 struct sctp_inpcb *tinp;
1376 int iteration_count = 0;
1380 NET_EPOCH_ENTER(et);
1381 SCTP_INP_INFO_RLOCK();
1382 SCTP_ITERATOR_LOCK();
1383 sctp_it_ctl.cur_it = it;
1385 SCTP_INP_RLOCK(it->inp);
1386 SCTP_INP_DECR_REF(it->inp);
1388 if (it->inp == NULL) {
1389 /* iterator is complete */
1391 sctp_it_ctl.cur_it = NULL;
1392 SCTP_ITERATOR_UNLOCK();
1393 SCTP_INP_INFO_RUNLOCK();
1394 if (it->function_atend != NULL) {
1395 (*it->function_atend) (it->pointer, it->val);
1397 SCTP_FREE(it, SCTP_M_ITER);
1405 SCTP_INP_RLOCK(it->inp);
1407 while (((it->pcb_flags) &&
1408 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1409 ((it->pcb_features) &&
1410 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1411 /* endpoint flags or features don't match, so keep looking */
1412 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1413 SCTP_INP_RUNLOCK(it->inp);
1414 goto done_with_iterator;
1417 it->inp = LIST_NEXT(it->inp, sctp_list);
1418 SCTP_INP_RUNLOCK(tinp);
1419 if (it->inp == NULL) {
1420 goto done_with_iterator;
1422 SCTP_INP_RLOCK(it->inp);
1424 /* now go through each assoc which is in the desired state */
1425 if (it->done_current_ep == 0) {
1426 if (it->function_inp != NULL)
1427 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1428 it->done_current_ep = 1;
1430 if (it->stcb == NULL) {
1431 /* run the per instance function */
1432 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1434 if ((inp_skip) || it->stcb == NULL) {
1435 if (it->function_inp_end != NULL) {
1436 inp_skip = (*it->function_inp_end) (it->inp,
1440 SCTP_INP_RUNLOCK(it->inp);
1444 SCTP_TCB_LOCK(it->stcb);
1445 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1446 /* not in the right state... keep looking */
1447 SCTP_TCB_UNLOCK(it->stcb);
1450 /* see if we have limited out the iterator loop */
1452 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1453 /* Pause to let others grab the lock */
1454 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1455 SCTP_TCB_UNLOCK(it->stcb);
1456 SCTP_INP_INCR_REF(it->inp);
1457 SCTP_INP_RUNLOCK(it->inp);
1458 SCTP_ITERATOR_UNLOCK();
1459 SCTP_INP_INFO_RUNLOCK();
1460 SCTP_INP_INFO_RLOCK();
1461 SCTP_ITERATOR_LOCK();
1462 if (sctp_it_ctl.iterator_flags) {
1463 /* We won't be staying here */
1464 SCTP_INP_DECR_REF(it->inp);
1465 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1466 if (sctp_it_ctl.iterator_flags &
1467 SCTP_ITERATOR_STOP_CUR_IT) {
1468 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1469 goto done_with_iterator;
1471 if (sctp_it_ctl.iterator_flags &
1472 SCTP_ITERATOR_STOP_CUR_INP) {
1473 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1476 /* If we reach here huh? */
1477 SCTP_PRINTF("Unknown it ctl flag %x\n",
1478 sctp_it_ctl.iterator_flags);
1479 sctp_it_ctl.iterator_flags = 0;
1481 SCTP_INP_RLOCK(it->inp);
1482 SCTP_INP_DECR_REF(it->inp);
1483 SCTP_TCB_LOCK(it->stcb);
1484 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1485 iteration_count = 0;
1488 /* run function on this one */
1489 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1492 * we lie here, it really needs to have its own type but
1493 * first I must verify that this won't effect things :-0
1495 if (it->no_chunk_output == 0)
1496 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1498 SCTP_TCB_UNLOCK(it->stcb);
1500 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1501 if (it->stcb == NULL) {
1502 /* Run last function */
1503 if (it->function_inp_end != NULL) {
1504 inp_skip = (*it->function_inp_end) (it->inp,
1510 SCTP_INP_RUNLOCK(it->inp);
1512 /* done with all assocs on this endpoint, move on to next endpoint */
1513 it->done_current_ep = 0;
1514 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1517 it->inp = LIST_NEXT(it->inp, sctp_list);
1519 if (it->inp == NULL) {
1520 goto done_with_iterator;
1522 goto select_a_new_ep;
1526 sctp_iterator_worker(void)
1528 struct sctp_iterator *it;
1530 /* This function is called with the WQ lock in place */
1531 sctp_it_ctl.iterator_running = 1;
1532 while ((it = TAILQ_FIRST(&sctp_it_ctl.iteratorhead)) != NULL) {
1533 /* now lets work on this one */
1534 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1535 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1536 CURVNET_SET(it->vn);
1537 sctp_iterator_work(it);
1539 SCTP_IPI_ITERATOR_WQ_LOCK();
1540 /* sa_ignore FREED_MEMORY */
1542 sctp_it_ctl.iterator_running = 0;
1548 sctp_handle_addr_wq(void)
1550 /* deal with the ADDR wq from the rtsock calls */
1551 struct sctp_laddr *wi, *nwi;
1552 struct sctp_asconf_iterator *asc;
1554 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1555 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1557 /* Try later, no memory */
1558 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1559 (struct sctp_inpcb *)NULL,
1560 (struct sctp_tcb *)NULL,
1561 (struct sctp_nets *)NULL);
1564 LIST_INIT(&asc->list_of_work);
1567 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1568 LIST_REMOVE(wi, sctp_nxt_addr);
1569 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1573 if (asc->cnt == 0) {
1574 SCTP_FREE(asc, SCTP_M_ASC_IT);
1578 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
1579 sctp_asconf_iterator_stcb,
1580 NULL, /* No ep end for boundall */
1581 SCTP_PCB_FLAGS_BOUNDALL,
1582 SCTP_PCB_ANY_FEATURES,
1583 SCTP_ASOC_ANY_STATE,
1585 sctp_asconf_iterator_end, NULL, 0);
1587 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
1589 * Freeing if we are stopping or put back on the
1592 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
1593 sctp_asconf_iterator_end(asc, 0);
1595 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
1596 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
1598 SCTP_FREE(asc, SCTP_M_ASC_IT);
1605 sctp_timeout_handler(void *t)
1607 struct epoch_tracker et;
1608 struct sctp_inpcb *inp;
1609 struct sctp_tcb *stcb;
1610 struct sctp_nets *net;
1611 struct sctp_timer *tmr;
1612 struct mbuf *op_err;
1613 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1619 tmr = (struct sctp_timer *)t;
1620 inp = (struct sctp_inpcb *)tmr->ep;
1621 stcb = (struct sctp_tcb *)tmr->tcb;
1622 net = (struct sctp_nets *)tmr->net;
1623 CURVNET_SET((struct vnet *)tmr->vnet);
1626 #ifdef SCTP_AUDITING_ENABLED
1627 sctp_audit_log(0xF0, (uint8_t)tmr->type);
1628 sctp_auditing(3, inp, stcb, net);
1631 /* sanity checks... */
1632 if (tmr->self != (void *)tmr) {
1634 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1640 tmr->stopped_from = 0xa001;
1641 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1643 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1649 tmr->stopped_from = 0xa002;
1650 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1654 /* if this is an iterator timeout, get the struct and clear inp */
1655 tmr->stopped_from = 0xa003;
1657 SCTP_INP_INCR_REF(inp);
1658 if ((inp->sctp_socket == NULL) &&
1659 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1660 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1661 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1662 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1663 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1664 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1665 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1666 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1667 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))) {
1668 SCTP_INP_DECR_REF(inp);
1673 tmr->stopped_from = 0xa004;
1675 atomic_add_int(&stcb->asoc.refcnt, 1);
1676 if (stcb->asoc.state == 0) {
1677 atomic_add_int(&stcb->asoc.refcnt, -1);
1679 SCTP_INP_DECR_REF(inp);
1686 tmr->stopped_from = 0xa005;
1687 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type);
1688 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1690 SCTP_INP_DECR_REF(inp);
1693 atomic_add_int(&stcb->asoc.refcnt, -1);
1698 tmr->stopped_from = 0xa006;
1701 SCTP_TCB_LOCK(stcb);
1702 atomic_add_int(&stcb->asoc.refcnt, -1);
1703 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1704 ((stcb->asoc.state == 0) ||
1705 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1706 SCTP_TCB_UNLOCK(stcb);
1708 SCTP_INP_DECR_REF(inp);
1713 } else if (inp != NULL) {
1714 if (type != SCTP_TIMER_TYPE_INPKILL) {
1715 SCTP_INP_WLOCK(inp);
1718 SCTP_WQ_ADDR_LOCK();
1720 /* record in stopped what t-o occurred */
1721 tmr->stopped_from = type;
1723 NET_EPOCH_ENTER(et);
1724 /* mark as being serviced now */
1725 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1727 * Callout has been rescheduled.
1731 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1733 * Not active, so no action.
1737 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1739 /* call the handler for the appropriate timer type */
1741 case SCTP_TIMER_TYPE_SEND:
1742 if ((stcb == NULL) || (inp == NULL)) {
1745 SCTP_STAT_INCR(sctps_timodata);
1746 stcb->asoc.timodata++;
1747 stcb->asoc.num_send_timers_up--;
1748 if (stcb->asoc.num_send_timers_up < 0) {
1749 stcb->asoc.num_send_timers_up = 0;
1751 SCTP_TCB_LOCK_ASSERT(stcb);
1752 if (sctp_t3rxt_timer(inp, stcb, net)) {
1753 /* no need to unlock on tcb its gone */
1757 SCTP_TCB_LOCK_ASSERT(stcb);
1758 #ifdef SCTP_AUDITING_ENABLED
1759 sctp_auditing(4, inp, stcb, net);
1761 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1762 if ((stcb->asoc.num_send_timers_up == 0) &&
1763 (stcb->asoc.sent_queue_cnt > 0)) {
1764 struct sctp_tmit_chunk *chk;
1767 * safeguard. If there on some on the sent queue
1768 * somewhere but no timers running something is
1769 * wrong... so we start a timer on the first chunk
1770 * on the send queue on whatever net it is sent to.
1772 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1773 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1777 case SCTP_TIMER_TYPE_INIT:
1778 if ((stcb == NULL) || (inp == NULL)) {
1781 SCTP_STAT_INCR(sctps_timoinit);
1782 stcb->asoc.timoinit++;
1783 if (sctp_t1init_timer(inp, stcb, net)) {
1784 /* no need to unlock on tcb its gone */
1787 /* We do output but not here */
1790 case SCTP_TIMER_TYPE_RECV:
1791 if ((stcb == NULL) || (inp == NULL)) {
1794 SCTP_STAT_INCR(sctps_timosack);
1795 stcb->asoc.timosack++;
1796 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1797 #ifdef SCTP_AUDITING_ENABLED
1798 sctp_auditing(4, inp, stcb, net);
1800 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1802 case SCTP_TIMER_TYPE_SHUTDOWN:
1803 if ((stcb == NULL) || (inp == NULL)) {
1806 if (sctp_shutdown_timer(inp, stcb, net)) {
1807 /* no need to unlock on tcb its gone */
1810 SCTP_STAT_INCR(sctps_timoshutdown);
1811 stcb->asoc.timoshutdown++;
1812 #ifdef SCTP_AUDITING_ENABLED
1813 sctp_auditing(4, inp, stcb, net);
1815 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1817 case SCTP_TIMER_TYPE_HEARTBEAT:
1818 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1821 SCTP_STAT_INCR(sctps_timoheartbeat);
1822 stcb->asoc.timoheartbeat++;
1823 if (sctp_heartbeat_timer(inp, stcb, net)) {
1824 /* no need to unlock on tcb its gone */
1827 #ifdef SCTP_AUDITING_ENABLED
1828 sctp_auditing(4, inp, stcb, net);
1830 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1831 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1832 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1835 case SCTP_TIMER_TYPE_COOKIE:
1836 if ((stcb == NULL) || (inp == NULL)) {
1840 if (sctp_cookie_timer(inp, stcb, net)) {
1841 /* no need to unlock on tcb its gone */
1844 SCTP_STAT_INCR(sctps_timocookie);
1845 stcb->asoc.timocookie++;
1846 #ifdef SCTP_AUDITING_ENABLED
1847 sctp_auditing(4, inp, stcb, net);
1850 * We consider T3 and Cookie timer pretty much the same with
1851 * respect to where from in chunk_output.
1853 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1855 case SCTP_TIMER_TYPE_NEWCOOKIE:
1863 SCTP_STAT_INCR(sctps_timosecret);
1864 (void)SCTP_GETTIME_TIMEVAL(&tv);
1865 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1866 inp->sctp_ep.last_secret_number =
1867 inp->sctp_ep.current_secret_number;
1868 inp->sctp_ep.current_secret_number++;
1869 if (inp->sctp_ep.current_secret_number >=
1870 SCTP_HOW_MANY_SECRETS) {
1871 inp->sctp_ep.current_secret_number = 0;
1873 secret = (int)inp->sctp_ep.current_secret_number;
1874 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1875 inp->sctp_ep.secret_key[secret][i] =
1876 sctp_select_initial_TSN(&inp->sctp_ep);
1878 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
1882 case SCTP_TIMER_TYPE_PATHMTURAISE:
1883 if ((stcb == NULL) || (inp == NULL)) {
1886 SCTP_STAT_INCR(sctps_timopathmtu);
1887 sctp_pathmtu_timer(inp, stcb, net);
1890 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1891 if ((stcb == NULL) || (inp == NULL)) {
1894 if (sctp_shutdownack_timer(inp, stcb, net)) {
1895 /* no need to unlock on tcb its gone */
1898 SCTP_STAT_INCR(sctps_timoshutdownack);
1899 stcb->asoc.timoshutdownack++;
1900 #ifdef SCTP_AUDITING_ENABLED
1901 sctp_auditing(4, inp, stcb, net);
1903 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1905 case SCTP_TIMER_TYPE_ASCONF:
1906 if ((stcb == NULL) || (inp == NULL)) {
1909 if (sctp_asconf_timer(inp, stcb, net)) {
1910 /* no need to unlock on tcb its gone */
1913 SCTP_STAT_INCR(sctps_timoasconf);
1914 #ifdef SCTP_AUDITING_ENABLED
1915 sctp_auditing(4, inp, stcb, net);
1917 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1919 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1920 if ((stcb == NULL) || (inp == NULL)) {
1923 SCTP_STAT_INCR(sctps_timoshutdownguard);
1924 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
1925 "Shutdown guard timer expired");
1926 sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
1927 /* no need to unlock on tcb its gone */
1929 case SCTP_TIMER_TYPE_AUTOCLOSE:
1930 if ((stcb == NULL) || (inp == NULL)) {
1933 SCTP_STAT_INCR(sctps_timoautoclose);
1934 sctp_autoclose_timer(inp, stcb);
1935 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1938 case SCTP_TIMER_TYPE_STRRESET:
1939 if ((stcb == NULL) || (inp == NULL)) {
1942 if (sctp_strreset_timer(inp, stcb)) {
1943 /* no need to unlock on tcb its gone */
1946 SCTP_STAT_INCR(sctps_timostrmrst);
1947 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1949 case SCTP_TIMER_TYPE_INPKILL:
1950 SCTP_STAT_INCR(sctps_timoinpkill);
1955 * special case, take away our increment since WE are the
1958 SCTP_INP_DECR_REF(inp);
1959 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
1960 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1961 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1962 SCTP_CALLED_FROM_INPKILL_TIMER);
1965 case SCTP_TIMER_TYPE_ASOCKILL:
1966 if ((stcb == NULL) || (inp == NULL)) {
1969 SCTP_STAT_INCR(sctps_timoassockill);
1970 /* Can we free it yet? */
1971 SCTP_INP_DECR_REF(inp);
1972 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
1973 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1974 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1975 so = SCTP_INP_SO(inp);
1976 atomic_add_int(&stcb->asoc.refcnt, 1);
1977 SCTP_TCB_UNLOCK(stcb);
1978 SCTP_SOCKET_LOCK(so, 1);
1979 SCTP_TCB_LOCK(stcb);
1980 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1982 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
1983 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1984 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1985 SCTP_SOCKET_UNLOCK(so, 1);
1988 * free asoc, always unlocks (or destroy's) so prevent
1989 * duplicate unlock or unlock of a free mtx :-0
1993 case SCTP_TIMER_TYPE_ADDR_WQ:
1994 sctp_handle_addr_wq();
1996 case SCTP_TIMER_TYPE_PRIM_DELETED:
1997 if ((stcb == NULL) || (inp == NULL)) {
2000 sctp_delete_prim_timer(inp, stcb);
2001 SCTP_STAT_INCR(sctps_timodelprim);
2004 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
2008 #ifdef SCTP_AUDITING_ENABLED
2009 sctp_audit_log(0xF1, (uint8_t)type);
2011 sctp_auditing(5, inp, stcb, net);
2013 if ((did_output) && stcb) {
2015 * Now we need to clean up the control chunk chain if an
2016 * ECNE is on it. It must be marked as UNSENT again so next
2017 * call will continue to send it until such time that we get
2018 * a CWR, to remove it. It is, however, less likely that we
2019 * will find a ecn echo on the chain though.
2021 sctp_fix_ecn_echo(&stcb->asoc);
2025 SCTP_TCB_UNLOCK(stcb);
2026 } else if (inp != NULL) {
2027 SCTP_INP_WUNLOCK(inp);
2029 SCTP_WQ_ADDR_UNLOCK();
2034 SCTP_INP_DECR_REF(inp);
2038 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type);
2044 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2045 struct sctp_nets *net)
2048 struct sctp_timer *tmr;
2050 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
2055 SCTP_TCB_LOCK_ASSERT(stcb);
2057 /* Don't restart timer on net that's been removed. */
2058 if (net != NULL && (net->dest_state & SCTP_ADDR_BEING_DELETED)) {
2062 case SCTP_TIMER_TYPE_SEND:
2063 /* Here we use the RTO timer */
2067 if ((stcb == NULL) || (net == NULL)) {
2070 tmr = &net->rxt_timer;
2071 if (net->RTO == 0) {
2072 rto_val = stcb->asoc.initial_rto;
2076 to_ticks = MSEC_TO_TICKS(rto_val);
2079 case SCTP_TIMER_TYPE_INIT:
2081 * Here we use the INIT timer default usually about 1
2084 if ((stcb == NULL) || (net == NULL)) {
2087 tmr = &net->rxt_timer;
2088 if (net->RTO == 0) {
2089 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2091 to_ticks = MSEC_TO_TICKS(net->RTO);
2094 case SCTP_TIMER_TYPE_RECV:
2096 * Here we use the Delayed-Ack timer value from the inp
2097 * ususually about 200ms.
2102 tmr = &stcb->asoc.dack_timer;
2103 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
2105 case SCTP_TIMER_TYPE_SHUTDOWN:
2106 /* Here we use the RTO of the destination. */
2107 if ((stcb == NULL) || (net == NULL)) {
2110 if (net->RTO == 0) {
2111 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2113 to_ticks = MSEC_TO_TICKS(net->RTO);
2115 tmr = &net->rxt_timer;
2117 case SCTP_TIMER_TYPE_HEARTBEAT:
2119 * the net is used here so that we can add in the RTO. Even
2120 * though we use a different timer. We also add the HB timer
2121 * PLUS a random jitter.
2123 if ((stcb == NULL) || (net == NULL)) {
2129 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2130 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2133 if (net->RTO == 0) {
2134 to_ticks = stcb->asoc.initial_rto;
2136 to_ticks = net->RTO;
2138 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2139 jitter = rndval % to_ticks;
2140 if (jitter >= (to_ticks >> 1)) {
2141 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
2143 to_ticks = to_ticks - jitter;
2145 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2146 !(net->dest_state & SCTP_ADDR_PF)) {
2147 to_ticks += net->heart_beat_delay;
2150 * Now we must convert the to_ticks that are now in
2153 to_ticks = MSEC_TO_TICKS(to_ticks);
2154 tmr = &net->hb_timer;
2157 case SCTP_TIMER_TYPE_COOKIE:
2159 * Here we can use the RTO timer from the network since one
2160 * RTT was compelete. If a retran happened then we will be
2161 * using the RTO initial value.
2163 if ((stcb == NULL) || (net == NULL)) {
2166 if (net->RTO == 0) {
2167 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2169 to_ticks = MSEC_TO_TICKS(net->RTO);
2171 tmr = &net->rxt_timer;
2173 case SCTP_TIMER_TYPE_NEWCOOKIE:
2175 * nothing needed but the endpoint here ususually about 60
2178 tmr = &inp->sctp_ep.signature_change;
2179 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2181 case SCTP_TIMER_TYPE_PATHMTURAISE:
2183 * Here we use the value found in the EP for PMTU ususually
2186 if ((stcb == NULL) || (net == NULL)) {
2189 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2192 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2193 tmr = &net->pmtu_timer;
2195 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2196 /* Here we use the RTO of the destination */
2197 if ((stcb == NULL) || (net == NULL)) {
2200 if (net->RTO == 0) {
2201 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2203 to_ticks = MSEC_TO_TICKS(net->RTO);
2205 tmr = &net->rxt_timer;
2207 case SCTP_TIMER_TYPE_ASCONF:
2209 * Here the timer comes from the stcb but its value is from
2212 if ((stcb == NULL) || (net == NULL)) {
2215 if (net->RTO == 0) {
2216 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2218 to_ticks = MSEC_TO_TICKS(net->RTO);
2220 tmr = &stcb->asoc.asconf_timer;
2222 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2224 * Here we use the endpoints shutdown guard timer usually
2230 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2231 to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto);
2233 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2235 tmr = &stcb->asoc.shut_guard_timer;
2237 case SCTP_TIMER_TYPE_AUTOCLOSE:
2241 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2243 * Really an error since stcb is NOT set to
2248 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2249 tmr = &stcb->asoc.autoclose_timer;
2251 case SCTP_TIMER_TYPE_STRRESET:
2253 * Here the timer comes from the stcb but its value is from
2256 if ((stcb == NULL) || (net == NULL)) {
2259 if (net->RTO == 0) {
2260 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2262 to_ticks = MSEC_TO_TICKS(net->RTO);
2264 tmr = &stcb->asoc.strreset_timer;
2266 case SCTP_TIMER_TYPE_INPKILL:
2268 * The inp is setup to die. We re-use the signature_chage
2269 * timer since that has stopped and we are in the GONE
2272 tmr = &inp->sctp_ep.signature_change;
2273 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2275 case SCTP_TIMER_TYPE_ASOCKILL:
2279 tmr = &stcb->asoc.strreset_timer;
2280 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2282 case SCTP_TIMER_TYPE_ADDR_WQ:
2283 /* Only 1 tick away :-) */
2284 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2285 to_ticks = SCTP_ADDRESS_TICK_DELAY;
2287 case SCTP_TIMER_TYPE_PRIM_DELETED:
2288 if ((stcb == NULL) || (net != NULL)) {
2291 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2292 tmr = &stcb->asoc.delete_prim_timer;
2295 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2300 if ((to_ticks <= 0) || (tmr == NULL)) {
2301 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2302 __func__, t_type, to_ticks, (void *)tmr);
2305 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2307 * we do NOT allow you to have it already running. if it is
2308 * we leave the current one up unchanged
2312 /* At this point we can proceed */
2313 if (t_type == SCTP_TIMER_TYPE_SEND) {
2314 stcb->asoc.num_send_timers_up++;
2316 tmr->stopped_from = 0;
2318 tmr->ep = (void *)inp;
2319 tmr->tcb = (void *)stcb;
2320 tmr->net = (void *)net;
2321 tmr->self = (void *)tmr;
2322 tmr->vnet = (void *)curvnet;
2323 tmr->ticks = sctp_get_tick_count();
2324 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2329 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2330 struct sctp_nets *net, uint32_t from)
2332 struct sctp_timer *tmr;
2334 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2340 SCTP_TCB_LOCK_ASSERT(stcb);
2343 case SCTP_TIMER_TYPE_SEND:
2344 if ((stcb == NULL) || (net == NULL)) {
2347 tmr = &net->rxt_timer;
2349 case SCTP_TIMER_TYPE_INIT:
2350 if ((stcb == NULL) || (net == NULL)) {
2353 tmr = &net->rxt_timer;
2355 case SCTP_TIMER_TYPE_RECV:
2359 tmr = &stcb->asoc.dack_timer;
2361 case SCTP_TIMER_TYPE_SHUTDOWN:
2362 if ((stcb == NULL) || (net == NULL)) {
2365 tmr = &net->rxt_timer;
2367 case SCTP_TIMER_TYPE_HEARTBEAT:
2368 if ((stcb == NULL) || (net == NULL)) {
2371 tmr = &net->hb_timer;
2373 case SCTP_TIMER_TYPE_COOKIE:
2374 if ((stcb == NULL) || (net == NULL)) {
2377 tmr = &net->rxt_timer;
2379 case SCTP_TIMER_TYPE_NEWCOOKIE:
2380 /* nothing needed but the endpoint here */
2381 tmr = &inp->sctp_ep.signature_change;
2383 * We re-use the newcookie timer for the INP kill timer. We
2384 * must assure that we do not kill it by accident.
2387 case SCTP_TIMER_TYPE_PATHMTURAISE:
2388 if ((stcb == NULL) || (net == NULL)) {
2391 tmr = &net->pmtu_timer;
2393 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2394 if ((stcb == NULL) || (net == NULL)) {
2397 tmr = &net->rxt_timer;
2399 case SCTP_TIMER_TYPE_ASCONF:
2403 tmr = &stcb->asoc.asconf_timer;
2405 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2409 tmr = &stcb->asoc.shut_guard_timer;
2411 case SCTP_TIMER_TYPE_AUTOCLOSE:
2415 tmr = &stcb->asoc.autoclose_timer;
2417 case SCTP_TIMER_TYPE_STRRESET:
2421 tmr = &stcb->asoc.strreset_timer;
2423 case SCTP_TIMER_TYPE_INPKILL:
2425 * The inp is setup to die. We re-use the signature_chage
2426 * timer since that has stopped and we are in the GONE
2429 tmr = &inp->sctp_ep.signature_change;
2431 case SCTP_TIMER_TYPE_ASOCKILL:
2433 * Stop the asoc kill timer.
2438 tmr = &stcb->asoc.strreset_timer;
2440 case SCTP_TIMER_TYPE_ADDR_WQ:
2441 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2443 case SCTP_TIMER_TYPE_PRIM_DELETED:
2447 tmr = &stcb->asoc.delete_prim_timer;
2450 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2457 if ((tmr->type != t_type) && tmr->type) {
2459 * Ok we have a timer that is under joint use. Cookie timer
2460 * per chance with the SEND timer. We therefore are NOT
2461 * running the timer that the caller wants stopped. So just
2466 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2467 stcb->asoc.num_send_timers_up--;
2468 if (stcb->asoc.num_send_timers_up < 0) {
2469 stcb->asoc.num_send_timers_up = 0;
2473 tmr->stopped_from = from;
2474 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2479 sctp_calculate_len(struct mbuf *m)
2486 tlen += SCTP_BUF_LEN(at);
2487 at = SCTP_BUF_NEXT(at);
2493 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2494 struct sctp_association *asoc, uint32_t mtu)
2497 * Reset the P-MTU size on this association, this involves changing
2498 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2499 * allow the DF flag to be cleared.
2501 struct sctp_tmit_chunk *chk;
2502 unsigned int eff_mtu, ovh;
2504 asoc->smallest_mtu = mtu;
2505 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2506 ovh = SCTP_MIN_OVERHEAD;
2508 ovh = SCTP_MIN_V4_OVERHEAD;
2510 eff_mtu = mtu - ovh;
2511 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2512 if (chk->send_size > eff_mtu) {
2513 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2516 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2517 if (chk->send_size > eff_mtu) {
2518 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2525 * Given an association and starting time of the current RTT period, update
2526 * RTO in number of msecs. net should point to the current network.
2527 * Return 1, if an RTO update was performed, return 0 if no update was
2528 * performed due to invalid starting point.
2532 sctp_calculate_rto(struct sctp_tcb *stcb,
2533 struct sctp_association *asoc,
2534 struct sctp_nets *net,
2535 struct timeval *old,
2539 uint64_t rtt_us; /* RTT in us */
2540 int32_t rtt; /* RTT in ms */
2542 int first_measure = 0;
2544 /************************/
2545 /* 1. calculate new RTT */
2546 /************************/
2547 /* get the current time */
2548 if (stcb->asoc.use_precise_time) {
2549 (void)SCTP_GETPTIME_TIMEVAL(&now);
2551 (void)SCTP_GETTIME_TIMEVAL(&now);
2553 if ((old->tv_sec > now.tv_sec) ||
2554 ((old->tv_sec == now.tv_sec) && (old->tv_sec > now.tv_sec))) {
2555 /* The starting point is in the future. */
2558 timevalsub(&now, old);
2559 rtt_us = (uint64_t)1000000 * (uint64_t)now.tv_sec + (uint64_t)now.tv_usec;
2560 if (rtt_us > SCTP_RTO_UPPER_BOUND * 1000) {
2561 /* The RTT is larger than a sane value. */
2564 /* store the current RTT in us */
2566 /* compute rtt in ms */
2567 rtt = (int32_t)(net->rtt / 1000);
2568 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2570 * Tell the CC module that a new update has just occurred
2573 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2576 * Do we need to determine the lan? We do this only on sacks i.e.
2577 * RTT being determined from data not non-data (HB/INIT->INITACK).
2579 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2580 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2581 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2582 net->lan_type = SCTP_LAN_INTERNET;
2584 net->lan_type = SCTP_LAN_LOCAL;
2588 /***************************/
2589 /* 2. update RTTVAR & SRTT */
2590 /***************************/
2592 * Compute the scaled average lastsa and the
2593 * scaled variance lastsv as described in van Jacobson
2594 * Paper "Congestion Avoidance and Control", Annex A.
2596 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2597 * (net->lastsv >> SCTP_RTT_VAR_SHIFT) is the rttvar
2599 if (net->RTO_measured) {
2600 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2605 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2607 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2608 rto_logging(net, SCTP_LOG_RTTVAR);
2611 /* First RTO measurment */
2612 net->RTO_measured = 1;
2614 net->lastsa = rtt << SCTP_RTT_SHIFT;
2615 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2616 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2617 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2620 if (net->lastsv == 0) {
2621 net->lastsv = SCTP_CLOCK_GRANULARITY;
2623 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2624 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2625 (stcb->asoc.sat_network_lockout == 0)) {
2626 stcb->asoc.sat_network = 1;
2627 } else if ((!first_measure) && stcb->asoc.sat_network) {
2628 stcb->asoc.sat_network = 0;
2629 stcb->asoc.sat_network_lockout = 1;
2631 /* bound it, per C6/C7 in Section 5.3.1 */
2632 if (new_rto < stcb->asoc.minrto) {
2633 new_rto = stcb->asoc.minrto;
2635 if (new_rto > stcb->asoc.maxrto) {
2636 new_rto = stcb->asoc.maxrto;
2643 * return a pointer to a contiguous piece of data from the given mbuf chain
2644 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2645 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2646 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2649 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t *in_ptr)
2655 if ((off < 0) || (len <= 0))
2658 /* find the desired start location */
2659 while ((m != NULL) && (off > 0)) {
2660 if (off < SCTP_BUF_LEN(m))
2662 off -= SCTP_BUF_LEN(m);
2663 m = SCTP_BUF_NEXT(m);
2668 /* is the current mbuf large enough (eg. contiguous)? */
2669 if ((SCTP_BUF_LEN(m) - off) >= len) {
2670 return (mtod(m, caddr_t)+off);
2672 /* else, it spans more than one mbuf, so save a temp copy... */
2673 while ((m != NULL) && (len > 0)) {
2674 count = min(SCTP_BUF_LEN(m) - off, len);
2675 memcpy(ptr, mtod(m, caddr_t)+off, count);
2679 m = SCTP_BUF_NEXT(m);
2681 if ((m == NULL) && (len > 0))
2684 return ((caddr_t)in_ptr);
2690 struct sctp_paramhdr *
2691 sctp_get_next_param(struct mbuf *m,
2693 struct sctp_paramhdr *pull,
2696 /* This just provides a typed signature to Peter's Pull routine */
2697 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2703 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2705 struct mbuf *m_last;
2711 if (padlen <= M_TRAILINGSPACE(m)) {
2713 * The easy way. We hope the majority of the time we hit
2718 /* Hard way we must grow the mbuf chain */
2719 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2720 if (m_last == NULL) {
2723 SCTP_BUF_LEN(m_last) = 0;
2724 SCTP_BUF_NEXT(m_last) = NULL;
2725 SCTP_BUF_NEXT(m) = m_last;
2727 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2728 SCTP_BUF_LEN(m_last) += padlen;
2729 memset(dp, 0, padlen);
2734 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2736 /* find the last mbuf in chain and pad it */
2739 if (last_mbuf != NULL) {
2740 return (sctp_add_pad_tombuf(last_mbuf, padval));
2742 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2743 if (SCTP_BUF_NEXT(m_at) == NULL) {
2744 return (sctp_add_pad_tombuf(m_at, padval));
2752 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2753 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2754 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2759 struct mbuf *m_notify;
2760 struct sctp_assoc_change *sac;
2761 struct sctp_queued_to_read *control;
2762 unsigned int notif_len;
2765 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2772 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2773 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2774 if (abort != NULL) {
2775 abort_len = ntohs(abort->ch.chunk_length);
2777 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
2780 if (abort_len > SCTP_CHUNK_BUFFER_SIZE) {
2781 abort_len = SCTP_CHUNK_BUFFER_SIZE;
2786 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2787 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2788 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2789 notif_len += abort_len;
2791 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2792 if (m_notify == NULL) {
2793 /* Retry with smaller value. */
2794 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2795 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2796 if (m_notify == NULL) {
2800 SCTP_BUF_NEXT(m_notify) = NULL;
2801 sac = mtod(m_notify, struct sctp_assoc_change *);
2802 memset(sac, 0, notif_len);
2803 sac->sac_type = SCTP_ASSOC_CHANGE;
2805 sac->sac_length = sizeof(struct sctp_assoc_change);
2806 sac->sac_state = state;
2807 sac->sac_error = error;
2808 /* XXX verify these stream counts */
2809 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2810 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2811 sac->sac_assoc_id = sctp_get_associd(stcb);
2812 if (notif_len > sizeof(struct sctp_assoc_change)) {
2813 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2815 if (stcb->asoc.prsctp_supported == 1) {
2816 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2818 if (stcb->asoc.auth_supported == 1) {
2819 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2821 if (stcb->asoc.asconf_supported == 1) {
2822 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2824 if (stcb->asoc.idata_supported == 1) {
2825 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
2827 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2828 if (stcb->asoc.reconfig_supported == 1) {
2829 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2831 sac->sac_length += i;
2832 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2833 memcpy(sac->sac_info, abort, abort_len);
2834 sac->sac_length += abort_len;
2837 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2838 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2839 0, 0, stcb->asoc.context, 0, 0, 0,
2841 if (control != NULL) {
2842 control->length = SCTP_BUF_LEN(m_notify);
2843 control->spec_flags = M_NOTIFICATION;
2844 /* not that we need this */
2845 control->tail_mbuf = m_notify;
2846 sctp_add_to_readq(stcb->sctp_ep, stcb,
2848 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2851 sctp_m_freem(m_notify);
2855 * For 1-to-1 style sockets, we send up and error when an ABORT
2859 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2860 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2861 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2862 SOCK_LOCK(stcb->sctp_socket);
2864 if (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) {
2865 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2866 stcb->sctp_socket->so_error = ECONNREFUSED;
2868 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2869 stcb->sctp_socket->so_error = ECONNRESET;
2872 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
2873 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
2874 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2875 stcb->sctp_socket->so_error = ETIMEDOUT;
2877 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2878 stcb->sctp_socket->so_error = ECONNABORTED;
2881 SOCK_UNLOCK(stcb->sctp_socket);
2883 /* Wake ANY sleepers */
2884 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2885 so = SCTP_INP_SO(stcb->sctp_ep);
2887 atomic_add_int(&stcb->asoc.refcnt, 1);
2888 SCTP_TCB_UNLOCK(stcb);
2889 SCTP_SOCKET_LOCK(so, 1);
2890 SCTP_TCB_LOCK(stcb);
2891 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2892 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2893 SCTP_SOCKET_UNLOCK(so, 1);
2898 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2899 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2900 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2901 socantrcvmore(stcb->sctp_socket);
2903 sorwakeup(stcb->sctp_socket);
2904 sowwakeup(stcb->sctp_socket);
2905 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2907 SCTP_SOCKET_UNLOCK(so, 1);
2913 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2914 struct sockaddr *sa, uint32_t error, int so_locked
2915 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2920 struct mbuf *m_notify;
2921 struct sctp_paddr_change *spc;
2922 struct sctp_queued_to_read *control;
2924 if ((stcb == NULL) ||
2925 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2926 /* event not enabled */
2929 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2930 if (m_notify == NULL)
2932 SCTP_BUF_LEN(m_notify) = 0;
2933 spc = mtod(m_notify, struct sctp_paddr_change *);
2934 memset(spc, 0, sizeof(struct sctp_paddr_change));
2935 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2937 spc->spc_length = sizeof(struct sctp_paddr_change);
2938 switch (sa->sa_family) {
2942 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
2943 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
2944 (struct sockaddr_in6 *)&spc->spc_aaddr);
2946 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2949 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2956 struct sockaddr_in6 *sin6;
2958 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2960 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2961 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2962 if (sin6->sin6_scope_id == 0) {
2963 /* recover scope_id for user */
2964 (void)sa6_recoverscope(sin6);
2966 /* clear embedded scope_id for user */
2967 in6_clearscope(&sin6->sin6_addr);
2977 spc->spc_state = state;
2978 spc->spc_error = error;
2979 spc->spc_assoc_id = sctp_get_associd(stcb);
2981 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2982 SCTP_BUF_NEXT(m_notify) = NULL;
2984 /* append to socket */
2985 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2986 0, 0, stcb->asoc.context, 0, 0, 0,
2988 if (control == NULL) {
2990 sctp_m_freem(m_notify);
2993 control->length = SCTP_BUF_LEN(m_notify);
2994 control->spec_flags = M_NOTIFICATION;
2995 /* not that we need this */
2996 control->tail_mbuf = m_notify;
2997 sctp_add_to_readq(stcb->sctp_ep, stcb,
2999 &stcb->sctp_socket->so_rcv, 1,
3000 SCTP_READ_LOCK_NOT_HELD,
3006 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
3007 struct sctp_tmit_chunk *chk, int so_locked
3008 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3013 struct mbuf *m_notify;
3014 struct sctp_send_failed *ssf;
3015 struct sctp_send_failed_event *ssfe;
3016 struct sctp_queued_to_read *control;
3017 struct sctp_chunkhdr *chkhdr;
3018 int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len;
3020 if ((stcb == NULL) ||
3021 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3022 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3023 /* event not enabled */
3027 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3028 notifhdr_len = sizeof(struct sctp_send_failed_event);
3030 notifhdr_len = sizeof(struct sctp_send_failed);
3032 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3033 if (m_notify == NULL)
3036 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3037 if (stcb->asoc.idata_supported) {
3038 chkhdr_len = sizeof(struct sctp_idata_chunk);
3040 chkhdr_len = sizeof(struct sctp_data_chunk);
3042 /* Use some defaults in case we can't access the chunk header */
3043 if (chk->send_size >= chkhdr_len) {
3044 payload_len = chk->send_size - chkhdr_len;
3049 if (chk->data != NULL) {
3050 chkhdr = mtod(chk->data, struct sctp_chunkhdr *);
3051 if (chkhdr != NULL) {
3052 chk_len = ntohs(chkhdr->chunk_length);
3053 if ((chk_len >= chkhdr_len) &&
3054 (chk->send_size >= chk_len) &&
3055 (chk->send_size - chk_len < 4)) {
3056 padding_len = chk->send_size - chk_len;
3057 payload_len = chk->send_size - chkhdr_len - padding_len;
3061 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3062 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3063 memset(ssfe, 0, notifhdr_len);
3064 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3066 ssfe->ssfe_flags = SCTP_DATA_SENT;
3068 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3070 ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len);
3071 ssfe->ssfe_error = error;
3072 /* not exactly what the user sent in, but should be close :) */
3073 ssfe->ssfe_info.snd_sid = chk->rec.data.sid;
3074 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
3075 ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid;
3076 ssfe->ssfe_info.snd_context = chk->rec.data.context;
3077 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3078 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3080 ssf = mtod(m_notify, struct sctp_send_failed *);
3081 memset(ssf, 0, notifhdr_len);
3082 ssf->ssf_type = SCTP_SEND_FAILED;
3084 ssf->ssf_flags = SCTP_DATA_SENT;
3086 ssf->ssf_flags = SCTP_DATA_UNSENT;
3088 ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len);
3089 ssf->ssf_error = error;
3090 /* not exactly what the user sent in, but should be close :) */
3091 ssf->ssf_info.sinfo_stream = chk->rec.data.sid;
3092 ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid;
3093 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
3094 ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid;
3095 ssf->ssf_info.sinfo_context = chk->rec.data.context;
3096 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3097 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3099 if (chk->data != NULL) {
3100 /* Trim off the sctp chunk header (it should be there) */
3101 if (chk->send_size == chkhdr_len + payload_len + padding_len) {
3102 m_adj(chk->data, chkhdr_len);
3103 m_adj(chk->data, -padding_len);
3104 sctp_mbuf_crush(chk->data);
3105 chk->send_size -= (chkhdr_len + padding_len);
3108 SCTP_BUF_NEXT(m_notify) = chk->data;
3109 /* Steal off the mbuf */
3112 * For this case, we check the actual socket buffer, since the assoc
3113 * is going away we don't want to overfill the socket buffer for a
3116 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3117 sctp_m_freem(m_notify);
3120 /* append to socket */
3121 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3122 0, 0, stcb->asoc.context, 0, 0, 0,
3124 if (control == NULL) {
3126 sctp_m_freem(m_notify);
3129 control->length = SCTP_BUF_LEN(m_notify);
3130 control->spec_flags = M_NOTIFICATION;
3131 /* not that we need this */
3132 control->tail_mbuf = m_notify;
3133 sctp_add_to_readq(stcb->sctp_ep, stcb,
3135 &stcb->sctp_socket->so_rcv, 1,
3136 SCTP_READ_LOCK_NOT_HELD,
3142 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3143 struct sctp_stream_queue_pending *sp, int so_locked
3144 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3149 struct mbuf *m_notify;
3150 struct sctp_send_failed *ssf;
3151 struct sctp_send_failed_event *ssfe;
3152 struct sctp_queued_to_read *control;
3155 if ((stcb == NULL) ||
3156 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3157 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3158 /* event not enabled */
3161 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3162 notifhdr_len = sizeof(struct sctp_send_failed_event);
3164 notifhdr_len = sizeof(struct sctp_send_failed);
3166 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3167 if (m_notify == NULL) {
3171 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3172 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3173 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3174 memset(ssfe, 0, notifhdr_len);
3175 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3176 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3177 ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length);
3178 ssfe->ssfe_error = error;
3179 /* not exactly what the user sent in, but should be close :) */
3180 ssfe->ssfe_info.snd_sid = sp->sid;
3181 if (sp->some_taken) {
3182 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3184 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3186 ssfe->ssfe_info.snd_ppid = sp->ppid;
3187 ssfe->ssfe_info.snd_context = sp->context;
3188 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3189 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3191 ssf = mtod(m_notify, struct sctp_send_failed *);
3192 memset(ssf, 0, notifhdr_len);
3193 ssf->ssf_type = SCTP_SEND_FAILED;
3194 ssf->ssf_flags = SCTP_DATA_UNSENT;
3195 ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length);
3196 ssf->ssf_error = error;
3197 /* not exactly what the user sent in, but should be close :) */
3198 ssf->ssf_info.sinfo_stream = sp->sid;
3199 ssf->ssf_info.sinfo_ssn = 0;
3200 if (sp->some_taken) {
3201 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3203 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3205 ssf->ssf_info.sinfo_ppid = sp->ppid;
3206 ssf->ssf_info.sinfo_context = sp->context;
3207 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3208 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3210 SCTP_BUF_NEXT(m_notify) = sp->data;
3212 /* Steal off the mbuf */
3215 * For this case, we check the actual socket buffer, since the assoc
3216 * is going away we don't want to overfill the socket buffer for a
3219 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3220 sctp_m_freem(m_notify);
3223 /* append to socket */
3224 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3225 0, 0, stcb->asoc.context, 0, 0, 0,
3227 if (control == NULL) {
3229 sctp_m_freem(m_notify);
3232 control->length = SCTP_BUF_LEN(m_notify);
3233 control->spec_flags = M_NOTIFICATION;
3234 /* not that we need this */
3235 control->tail_mbuf = m_notify;
3236 sctp_add_to_readq(stcb->sctp_ep, stcb,
3238 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3244 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3246 struct mbuf *m_notify;
3247 struct sctp_adaptation_event *sai;
3248 struct sctp_queued_to_read *control;
3250 if ((stcb == NULL) ||
3251 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3252 /* event not enabled */
3256 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3257 if (m_notify == NULL)
3260 SCTP_BUF_LEN(m_notify) = 0;
3261 sai = mtod(m_notify, struct sctp_adaptation_event *);
3262 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3263 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3265 sai->sai_length = sizeof(struct sctp_adaptation_event);
3266 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3267 sai->sai_assoc_id = sctp_get_associd(stcb);
3269 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3270 SCTP_BUF_NEXT(m_notify) = NULL;
3272 /* append to socket */
3273 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3274 0, 0, stcb->asoc.context, 0, 0, 0,
3276 if (control == NULL) {
3278 sctp_m_freem(m_notify);
3281 control->length = SCTP_BUF_LEN(m_notify);
3282 control->spec_flags = M_NOTIFICATION;
3283 /* not that we need this */
3284 control->tail_mbuf = m_notify;
3285 sctp_add_to_readq(stcb->sctp_ep, stcb,
3287 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3290 /* This always must be called with the read-queue LOCKED in the INP */
3292 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3293 uint32_t val, int so_locked
3294 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3299 struct mbuf *m_notify;
3300 struct sctp_pdapi_event *pdapi;
3301 struct sctp_queued_to_read *control;
3304 if ((stcb == NULL) ||
3305 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3306 /* event not enabled */
3309 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3313 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3314 if (m_notify == NULL)
3317 SCTP_BUF_LEN(m_notify) = 0;
3318 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3319 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3320 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3321 pdapi->pdapi_flags = 0;
3322 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3323 pdapi->pdapi_indication = error;
3324 pdapi->pdapi_stream = (val >> 16);
3325 pdapi->pdapi_seq = (val & 0x0000ffff);
3326 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3328 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3329 SCTP_BUF_NEXT(m_notify) = NULL;
3330 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3331 0, 0, stcb->asoc.context, 0, 0, 0,
3333 if (control == NULL) {
3335 sctp_m_freem(m_notify);
3338 control->length = SCTP_BUF_LEN(m_notify);
3339 control->spec_flags = M_NOTIFICATION;
3340 /* not that we need this */
3341 control->tail_mbuf = m_notify;
3342 sb = &stcb->sctp_socket->so_rcv;
3343 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3344 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3346 sctp_sballoc(stcb, sb, m_notify);
3347 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3348 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3350 control->end_added = 1;
3351 if (stcb->asoc.control_pdapi)
3352 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3354 /* we really should not see this case */
3355 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3357 if (stcb->sctp_ep && stcb->sctp_socket) {
3358 /* This should always be the case */
3359 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3362 so = SCTP_INP_SO(stcb->sctp_ep);
3364 atomic_add_int(&stcb->asoc.refcnt, 1);
3365 SCTP_TCB_UNLOCK(stcb);
3366 SCTP_SOCKET_LOCK(so, 1);
3367 SCTP_TCB_LOCK(stcb);
3368 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3369 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3370 SCTP_SOCKET_UNLOCK(so, 1);
3375 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3376 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3378 SCTP_SOCKET_UNLOCK(so, 1);
3385 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3387 struct mbuf *m_notify;
3388 struct sctp_shutdown_event *sse;
3389 struct sctp_queued_to_read *control;
3392 * For TCP model AND UDP connected sockets we will send an error up
3393 * when an SHUTDOWN completes
3395 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3396 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3397 /* mark socket closed for read/write and wakeup! */
3398 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3401 so = SCTP_INP_SO(stcb->sctp_ep);
3402 atomic_add_int(&stcb->asoc.refcnt, 1);
3403 SCTP_TCB_UNLOCK(stcb);
3404 SCTP_SOCKET_LOCK(so, 1);
3405 SCTP_TCB_LOCK(stcb);
3406 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3407 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3408 SCTP_SOCKET_UNLOCK(so, 1);
3412 socantsendmore(stcb->sctp_socket);
3413 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3414 SCTP_SOCKET_UNLOCK(so, 1);
3417 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3418 /* event not enabled */
3422 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3423 if (m_notify == NULL)
3426 sse = mtod(m_notify, struct sctp_shutdown_event *);
3427 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3428 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3430 sse->sse_length = sizeof(struct sctp_shutdown_event);
3431 sse->sse_assoc_id = sctp_get_associd(stcb);
3433 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3434 SCTP_BUF_NEXT(m_notify) = NULL;
3436 /* append to socket */
3437 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3438 0, 0, stcb->asoc.context, 0, 0, 0,
3440 if (control == NULL) {
3442 sctp_m_freem(m_notify);
3445 control->length = SCTP_BUF_LEN(m_notify);
3446 control->spec_flags = M_NOTIFICATION;
3447 /* not that we need this */
3448 control->tail_mbuf = m_notify;
3449 sctp_add_to_readq(stcb->sctp_ep, stcb,
3451 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3455 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3457 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3462 struct mbuf *m_notify;
3463 struct sctp_sender_dry_event *event;
3464 struct sctp_queued_to_read *control;
3466 if ((stcb == NULL) ||
3467 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3468 /* event not enabled */
3472 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3473 if (m_notify == NULL) {
3477 SCTP_BUF_LEN(m_notify) = 0;
3478 event = mtod(m_notify, struct sctp_sender_dry_event *);
3479 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3480 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3481 event->sender_dry_flags = 0;
3482 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3483 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3485 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3486 SCTP_BUF_NEXT(m_notify) = NULL;
3488 /* append to socket */
3489 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3490 0, 0, stcb->asoc.context, 0, 0, 0,
3492 if (control == NULL) {
3494 sctp_m_freem(m_notify);
3497 control->length = SCTP_BUF_LEN(m_notify);
3498 control->spec_flags = M_NOTIFICATION;
3499 /* not that we need this */
3500 control->tail_mbuf = m_notify;
3501 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3502 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3507 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3509 struct mbuf *m_notify;
3510 struct sctp_queued_to_read *control;
3511 struct sctp_stream_change_event *stradd;
3513 if ((stcb == NULL) ||
3514 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3515 /* event not enabled */
3518 if ((stcb->asoc.peer_req_out) && flag) {
3519 /* Peer made the request, don't tell the local user */
3520 stcb->asoc.peer_req_out = 0;
3523 stcb->asoc.peer_req_out = 0;
3524 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3525 if (m_notify == NULL)
3528 SCTP_BUF_LEN(m_notify) = 0;
3529 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3530 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3531 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3532 stradd->strchange_flags = flag;
3533 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3534 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3535 stradd->strchange_instrms = numberin;
3536 stradd->strchange_outstrms = numberout;
3537 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3538 SCTP_BUF_NEXT(m_notify) = NULL;
3539 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3541 sctp_m_freem(m_notify);
3544 /* append to socket */
3545 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3546 0, 0, stcb->asoc.context, 0, 0, 0,
3548 if (control == NULL) {
3550 sctp_m_freem(m_notify);
3553 control->length = SCTP_BUF_LEN(m_notify);
3554 control->spec_flags = M_NOTIFICATION;
3555 /* not that we need this */
3556 control->tail_mbuf = m_notify;
3557 sctp_add_to_readq(stcb->sctp_ep, stcb,
3559 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3563 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3565 struct mbuf *m_notify;
3566 struct sctp_queued_to_read *control;
3567 struct sctp_assoc_reset_event *strasoc;
3569 if ((stcb == NULL) ||
3570 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3571 /* event not enabled */
3574 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3575 if (m_notify == NULL)
3578 SCTP_BUF_LEN(m_notify) = 0;
3579 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3580 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3581 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3582 strasoc->assocreset_flags = flag;
3583 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3584 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3585 strasoc->assocreset_local_tsn = sending_tsn;
3586 strasoc->assocreset_remote_tsn = recv_tsn;
3587 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3588 SCTP_BUF_NEXT(m_notify) = NULL;
3589 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3591 sctp_m_freem(m_notify);
3594 /* append to socket */
3595 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3596 0, 0, stcb->asoc.context, 0, 0, 0,
3598 if (control == NULL) {
3600 sctp_m_freem(m_notify);
3603 control->length = SCTP_BUF_LEN(m_notify);
3604 control->spec_flags = M_NOTIFICATION;
3605 /* not that we need this */
3606 control->tail_mbuf = m_notify;
3607 sctp_add_to_readq(stcb->sctp_ep, stcb,
3609 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3615 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3616 int number_entries, uint16_t *list, int flag)
3618 struct mbuf *m_notify;
3619 struct sctp_queued_to_read *control;
3620 struct sctp_stream_reset_event *strreset;
3623 if ((stcb == NULL) ||
3624 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3625 /* event not enabled */
3629 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3630 if (m_notify == NULL)
3633 SCTP_BUF_LEN(m_notify) = 0;
3634 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3635 if (len > M_TRAILINGSPACE(m_notify)) {
3636 /* never enough room */
3637 sctp_m_freem(m_notify);
3640 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3641 memset(strreset, 0, len);
3642 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3643 strreset->strreset_flags = flag;
3644 strreset->strreset_length = len;
3645 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3646 if (number_entries) {
3649 for (i = 0; i < number_entries; i++) {
3650 strreset->strreset_stream_list[i] = ntohs(list[i]);
3653 SCTP_BUF_LEN(m_notify) = len;
3654 SCTP_BUF_NEXT(m_notify) = NULL;
3655 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3657 sctp_m_freem(m_notify);
3660 /* append to socket */
3661 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3662 0, 0, stcb->asoc.context, 0, 0, 0,
3664 if (control == NULL) {
3666 sctp_m_freem(m_notify);
3669 control->length = SCTP_BUF_LEN(m_notify);
3670 control->spec_flags = M_NOTIFICATION;
3671 /* not that we need this */
3672 control->tail_mbuf = m_notify;
3673 sctp_add_to_readq(stcb->sctp_ep, stcb,
3675 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3680 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3682 struct mbuf *m_notify;
3683 struct sctp_remote_error *sre;
3684 struct sctp_queued_to_read *control;
3685 unsigned int notif_len;
3688 if ((stcb == NULL) ||
3689 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3692 if (chunk != NULL) {
3693 chunk_len = ntohs(chunk->ch.chunk_length);
3695 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
3698 if (chunk_len > SCTP_CHUNK_BUFFER_SIZE) {
3699 chunk_len = SCTP_CHUNK_BUFFER_SIZE;
3704 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
3705 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3706 if (m_notify == NULL) {
3707 /* Retry with smaller value. */
3708 notif_len = (unsigned int)sizeof(struct sctp_remote_error);
3709 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3710 if (m_notify == NULL) {
3714 SCTP_BUF_NEXT(m_notify) = NULL;
3715 sre = mtod(m_notify, struct sctp_remote_error *);
3716 memset(sre, 0, notif_len);
3717 sre->sre_type = SCTP_REMOTE_ERROR;
3719 sre->sre_length = sizeof(struct sctp_remote_error);
3720 sre->sre_error = error;
3721 sre->sre_assoc_id = sctp_get_associd(stcb);
3722 if (notif_len > sizeof(struct sctp_remote_error)) {
3723 memcpy(sre->sre_data, chunk, chunk_len);
3724 sre->sre_length += chunk_len;
3726 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3727 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3728 0, 0, stcb->asoc.context, 0, 0, 0,
3730 if (control != NULL) {
3731 control->length = SCTP_BUF_LEN(m_notify);
3732 control->spec_flags = M_NOTIFICATION;
3733 /* not that we need this */
3734 control->tail_mbuf = m_notify;
3735 sctp_add_to_readq(stcb->sctp_ep, stcb,
3737 &stcb->sctp_socket->so_rcv, 1,
3738 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3740 sctp_m_freem(m_notify);
3746 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3747 uint32_t error, void *data, int so_locked
3748 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3753 if ((stcb == NULL) ||
3754 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3755 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3756 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3757 /* If the socket is gone we are out of here */
3760 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3763 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
3764 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
3765 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3766 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3767 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3768 /* Don't report these in front states */
3772 switch (notification) {
3773 case SCTP_NOTIFY_ASSOC_UP:
3774 if (stcb->asoc.assoc_up_sent == 0) {
3775 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3776 stcb->asoc.assoc_up_sent = 1;
3778 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3779 sctp_notify_adaptation_layer(stcb);
3781 if (stcb->asoc.auth_supported == 0) {
3782 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3786 case SCTP_NOTIFY_ASSOC_DOWN:
3787 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3789 case SCTP_NOTIFY_INTERFACE_DOWN:
3791 struct sctp_nets *net;
3793 net = (struct sctp_nets *)data;
3794 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3795 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3798 case SCTP_NOTIFY_INTERFACE_UP:
3800 struct sctp_nets *net;
3802 net = (struct sctp_nets *)data;
3803 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3804 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3807 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3809 struct sctp_nets *net;
3811 net = (struct sctp_nets *)data;
3812 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3813 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3816 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3817 sctp_notify_send_failed2(stcb, error,
3818 (struct sctp_stream_queue_pending *)data, so_locked);
3820 case SCTP_NOTIFY_SENT_DG_FAIL:
3821 sctp_notify_send_failed(stcb, 1, error,
3822 (struct sctp_tmit_chunk *)data, so_locked);
3824 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3825 sctp_notify_send_failed(stcb, 0, error,
3826 (struct sctp_tmit_chunk *)data, so_locked);
3828 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3832 val = *((uint32_t *)data);
3834 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3837 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3838 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
3839 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
3840 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3842 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3845 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3846 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
3847 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
3848 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3850 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3853 case SCTP_NOTIFY_ASSOC_RESTART:
3854 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3855 if (stcb->asoc.auth_supported == 0) {
3856 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3860 case SCTP_NOTIFY_STR_RESET_SEND:
3861 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_OUTGOING_SSN);
3863 case SCTP_NOTIFY_STR_RESET_RECV:
3864 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_INCOMING);
3866 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3867 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3868 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3870 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3871 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3872 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3874 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3875 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3876 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3878 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3879 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3880 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3882 case SCTP_NOTIFY_ASCONF_ADD_IP:
3883 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3886 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3887 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3890 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3891 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3894 case SCTP_NOTIFY_PEER_SHUTDOWN:
3895 sctp_notify_shutdown_event(stcb);
3897 case SCTP_NOTIFY_AUTH_NEW_KEY:
3898 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3899 (uint16_t)(uintptr_t)data,
3902 case SCTP_NOTIFY_AUTH_FREE_KEY:
3903 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3904 (uint16_t)(uintptr_t)data,
3907 case SCTP_NOTIFY_NO_PEER_AUTH:
3908 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3909 (uint16_t)(uintptr_t)data,
3912 case SCTP_NOTIFY_SENDER_DRY:
3913 sctp_notify_sender_dry_event(stcb, so_locked);
3915 case SCTP_NOTIFY_REMOTE_ERROR:
3916 sctp_notify_remote_error(stcb, error, data);
3919 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3920 __func__, notification, notification);
3926 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3927 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3932 struct sctp_association *asoc;
3933 struct sctp_stream_out *outs;
3934 struct sctp_tmit_chunk *chk, *nchk;
3935 struct sctp_stream_queue_pending *sp, *nsp;
3942 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3943 /* already being freed */
3946 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3947 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3948 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3951 /* now through all the gunk freeing chunks */
3952 if (holds_lock == 0) {
3953 SCTP_TCB_SEND_LOCK(stcb);
3955 /* sent queue SHOULD be empty */
3956 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3957 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3958 asoc->sent_queue_cnt--;
3959 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3960 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
3961 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
3964 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
3968 if (chk->data != NULL) {
3969 sctp_free_bufspace(stcb, asoc, chk, 1);
3970 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3971 error, chk, so_locked);
3973 sctp_m_freem(chk->data);
3977 sctp_free_a_chunk(stcb, chk, so_locked);
3978 /* sa_ignore FREED_MEMORY */
3980 /* pending send queue SHOULD be empty */
3981 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3982 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3983 asoc->send_queue_cnt--;
3984 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
3985 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
3988 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
3991 if (chk->data != NULL) {
3992 sctp_free_bufspace(stcb, asoc, chk, 1);
3993 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3994 error, chk, so_locked);
3996 sctp_m_freem(chk->data);
4000 sctp_free_a_chunk(stcb, chk, so_locked);
4001 /* sa_ignore FREED_MEMORY */
4003 for (i = 0; i < asoc->streamoutcnt; i++) {
4004 /* For each stream */
4005 outs = &asoc->strmout[i];
4006 /* clean up any sends there */
4007 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4008 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
4009 TAILQ_REMOVE(&outs->outqueue, sp, next);
4010 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 1);
4011 sctp_free_spbufspace(stcb, asoc, sp);
4013 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4014 error, (void *)sp, so_locked);
4016 sctp_m_freem(sp->data);
4018 sp->tail_mbuf = NULL;
4023 sctp_free_remote_addr(sp->net);
4026 /* Free the chunk */
4027 sctp_free_a_strmoq(stcb, sp, so_locked);
4028 /* sa_ignore FREED_MEMORY */
4032 if (holds_lock == 0) {
4033 SCTP_TCB_SEND_UNLOCK(stcb);
4038 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
4039 struct sctp_abort_chunk *abort, int so_locked
4040 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4048 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4049 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4050 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4051 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
4053 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4054 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4055 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
4058 /* Tell them we lost the asoc */
4059 sctp_report_all_outbound(stcb, error, 0, so_locked);
4061 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
4063 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
4068 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4069 struct mbuf *m, int iphlen,
4070 struct sockaddr *src, struct sockaddr *dst,
4071 struct sctphdr *sh, struct mbuf *op_err,
4072 uint8_t mflowtype, uint32_t mflowid,
4073 uint32_t vrf_id, uint16_t port)
4076 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4082 vtag = stcb->asoc.peer_vtag;
4083 vrf_id = stcb->asoc.vrf_id;
4085 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
4086 mflowtype, mflowid, inp->fibnum,
4089 /* We have a TCB to abort, send notification too */
4090 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
4091 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_WAS_ABORTED);
4092 /* Ok, now lets free it */
4093 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4094 so = SCTP_INP_SO(inp);
4095 atomic_add_int(&stcb->asoc.refcnt, 1);
4096 SCTP_TCB_UNLOCK(stcb);
4097 SCTP_SOCKET_LOCK(so, 1);
4098 SCTP_TCB_LOCK(stcb);
4099 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4101 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4102 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
4103 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4104 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4106 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4107 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
4108 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4109 SCTP_SOCKET_UNLOCK(so, 1);
4113 #ifdef SCTP_ASOCLOG_OF_TSNS
4115 sctp_print_out_track_log(struct sctp_tcb *stcb)
4120 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
4121 SCTP_PRINTF("IN bound TSN log-aaa\n");
4122 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4123 SCTP_PRINTF("None rcvd\n");
4126 if (stcb->asoc.tsn_in_wrapped) {
4127 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4128 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4129 stcb->asoc.in_tsnlog[i].tsn,
4130 stcb->asoc.in_tsnlog[i].strm,
4131 stcb->asoc.in_tsnlog[i].seq,
4132 stcb->asoc.in_tsnlog[i].flgs,
4133 stcb->asoc.in_tsnlog[i].sz);
4136 if (stcb->asoc.tsn_in_at) {
4137 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4138 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4139 stcb->asoc.in_tsnlog[i].tsn,
4140 stcb->asoc.in_tsnlog[i].strm,
4141 stcb->asoc.in_tsnlog[i].seq,
4142 stcb->asoc.in_tsnlog[i].flgs,
4143 stcb->asoc.in_tsnlog[i].sz);
4147 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4148 if ((stcb->asoc.tsn_out_at == 0) &&
4149 (stcb->asoc.tsn_out_wrapped == 0)) {
4150 SCTP_PRINTF("None sent\n");
4152 if (stcb->asoc.tsn_out_wrapped) {
4153 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4154 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4155 stcb->asoc.out_tsnlog[i].tsn,
4156 stcb->asoc.out_tsnlog[i].strm,
4157 stcb->asoc.out_tsnlog[i].seq,
4158 stcb->asoc.out_tsnlog[i].flgs,
4159 stcb->asoc.out_tsnlog[i].sz);
4162 if (stcb->asoc.tsn_out_at) {
4163 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4164 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4165 stcb->asoc.out_tsnlog[i].tsn,
4166 stcb->asoc.out_tsnlog[i].strm,
4167 stcb->asoc.out_tsnlog[i].seq,
4168 stcb->asoc.out_tsnlog[i].flgs,
4169 stcb->asoc.out_tsnlog[i].sz);
4177 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4178 struct mbuf *op_err,
4180 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4185 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4189 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4190 so = SCTP_INP_SO(inp);
4193 /* Got to have a TCB */
4194 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4195 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4196 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4197 SCTP_CALLED_DIRECTLY_NOCMPSET);
4202 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_WAS_ABORTED);
4204 /* notify the peer */
4205 sctp_send_abort_tcb(stcb, op_err, so_locked);
4206 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4207 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
4208 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4209 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4211 /* notify the ulp */
4212 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4213 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4215 /* now free the asoc */
4216 #ifdef SCTP_ASOCLOG_OF_TSNS
4217 sctp_print_out_track_log(stcb);
4219 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4221 atomic_add_int(&stcb->asoc.refcnt, 1);
4222 SCTP_TCB_UNLOCK(stcb);
4223 SCTP_SOCKET_LOCK(so, 1);
4224 SCTP_TCB_LOCK(stcb);
4225 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4228 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4229 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4230 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4232 SCTP_SOCKET_UNLOCK(so, 1);
4238 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4239 struct sockaddr *src, struct sockaddr *dst,
4240 struct sctphdr *sh, struct sctp_inpcb *inp,
4242 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4243 uint32_t vrf_id, uint16_t port)
4245 struct sctp_chunkhdr *ch, chunk_buf;
4246 unsigned int chk_length;
4247 int contains_init_chunk;
4249 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4250 /* Generate a TO address for future reference */
4251 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4252 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4253 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4254 SCTP_CALLED_DIRECTLY_NOCMPSET);
4257 contains_init_chunk = 0;
4258 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4259 sizeof(*ch), (uint8_t *)&chunk_buf);
4260 while (ch != NULL) {
4261 chk_length = ntohs(ch->chunk_length);
4262 if (chk_length < sizeof(*ch)) {
4263 /* break to abort land */
4266 switch (ch->chunk_type) {
4268 contains_init_chunk = 1;
4270 case SCTP_PACKET_DROPPED:
4271 /* we don't respond to pkt-dropped */
4273 case SCTP_ABORT_ASSOCIATION:
4274 /* we don't respond with an ABORT to an ABORT */
4276 case SCTP_SHUTDOWN_COMPLETE:
4278 * we ignore it since we are not waiting for it and
4282 case SCTP_SHUTDOWN_ACK:
4283 sctp_send_shutdown_complete2(src, dst, sh,
4284 mflowtype, mflowid, fibnum,
4290 offset += SCTP_SIZE32(chk_length);
4291 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4292 sizeof(*ch), (uint8_t *)&chunk_buf);
4294 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4295 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4296 (contains_init_chunk == 0))) {
4297 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4298 mflowtype, mflowid, fibnum,
4304 * check the inbound datagram to make sure there is not an abort inside it,
4305 * if there is return 1, else return 0.
4308 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtagfill)
4310 struct sctp_chunkhdr *ch;
4311 struct sctp_init_chunk *init_chk, chunk_buf;
4313 unsigned int chk_length;
4315 offset = iphlen + sizeof(struct sctphdr);
4316 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4317 (uint8_t *)&chunk_buf);
4318 while (ch != NULL) {
4319 chk_length = ntohs(ch->chunk_length);
4320 if (chk_length < sizeof(*ch)) {
4321 /* packet is probably corrupt */
4324 /* we seem to be ok, is it an abort? */
4325 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4326 /* yep, tell them */
4329 if (ch->chunk_type == SCTP_INITIATION) {
4330 /* need to update the Vtag */
4331 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4332 offset, sizeof(*init_chk), (uint8_t *)&chunk_buf);
4333 if (init_chk != NULL) {
4334 *vtagfill = ntohl(init_chk->init.initiate_tag);
4337 /* Nope, move to the next chunk */
4338 offset += SCTP_SIZE32(chk_length);
4339 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4340 sizeof(*ch), (uint8_t *)&chunk_buf);
4346 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4347 * set (i.e. it's 0) so, create this function to compare link local scopes
4351 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4353 struct sockaddr_in6 a, b;
4359 if (a.sin6_scope_id == 0)
4360 if (sa6_recoverscope(&a)) {
4361 /* can't get scope, so can't match */
4364 if (b.sin6_scope_id == 0)
4365 if (sa6_recoverscope(&b)) {
4366 /* can't get scope, so can't match */
4369 if (a.sin6_scope_id != b.sin6_scope_id)
4376 * returns a sockaddr_in6 with embedded scope recovered and removed
4378 struct sockaddr_in6 *
4379 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4381 /* check and strip embedded scope junk */
4382 if (addr->sin6_family == AF_INET6) {
4383 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4384 if (addr->sin6_scope_id == 0) {
4386 if (!sa6_recoverscope(store)) {
4387 /* use the recovered scope */
4391 /* else, return the original "to" addr */
4392 in6_clearscope(&addr->sin6_addr);
4401 * are the two addresses the same? currently a "scopeless" check returns: 1
4405 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4409 if (sa1 == NULL || sa2 == NULL)
4412 /* must be the same family */
4413 if (sa1->sa_family != sa2->sa_family)
4416 switch (sa1->sa_family) {
4420 /* IPv6 addresses */
4421 struct sockaddr_in6 *sin6_1, *sin6_2;
4423 sin6_1 = (struct sockaddr_in6 *)sa1;
4424 sin6_2 = (struct sockaddr_in6 *)sa2;
4425 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4432 /* IPv4 addresses */
4433 struct sockaddr_in *sin_1, *sin_2;
4435 sin_1 = (struct sockaddr_in *)sa1;
4436 sin_2 = (struct sockaddr_in *)sa2;
4437 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4441 /* we don't do these... */
4447 sctp_print_address(struct sockaddr *sa)
4450 char ip6buf[INET6_ADDRSTRLEN];
4453 switch (sa->sa_family) {
4457 struct sockaddr_in6 *sin6;
4459 sin6 = (struct sockaddr_in6 *)sa;
4460 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4461 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4462 ntohs(sin6->sin6_port),
4463 sin6->sin6_scope_id);
4470 struct sockaddr_in *sin;
4473 sin = (struct sockaddr_in *)sa;
4474 p = (unsigned char *)&sin->sin_addr;
4475 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4476 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4487 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4488 struct sctp_inpcb *new_inp,
4489 struct sctp_tcb *stcb,
4493 * go through our old INP and pull off any control structures that
4494 * belong to stcb and move then to the new inp.
4496 struct socket *old_so, *new_so;
4497 struct sctp_queued_to_read *control, *nctl;
4498 struct sctp_readhead tmp_queue;
4502 old_so = old_inp->sctp_socket;
4503 new_so = new_inp->sctp_socket;
4504 TAILQ_INIT(&tmp_queue);
4505 error = sblock(&old_so->so_rcv, waitflags);
4508 * Gak, can't get sblock, we have a problem. data will be
4509 * left stranded.. and we don't dare look at it since the
4510 * other thread may be reading something. Oh well, its a
4511 * screwed up app that does a peeloff OR a accept while
4512 * reading from the main socket... actually its only the
4513 * peeloff() case, since I think read will fail on a
4514 * listening socket..
4518 /* lock the socket buffers */
4519 SCTP_INP_READ_LOCK(old_inp);
4520 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4521 /* Pull off all for out target stcb */
4522 if (control->stcb == stcb) {
4523 /* remove it we want it */
4524 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4525 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4528 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4529 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4531 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4532 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4533 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4535 m = SCTP_BUF_NEXT(m);
4539 SCTP_INP_READ_UNLOCK(old_inp);
4540 /* Remove the sb-lock on the old socket */
4542 sbunlock(&old_so->so_rcv);
4543 /* Now we move them over to the new socket buffer */
4544 SCTP_INP_READ_LOCK(new_inp);
4545 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4546 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4549 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4550 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4552 sctp_sballoc(stcb, &new_so->so_rcv, m);
4553 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4554 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4556 m = SCTP_BUF_NEXT(m);
4559 SCTP_INP_READ_UNLOCK(new_inp);
4563 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
4564 struct sctp_tcb *stcb,
4566 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4571 if ((inp != NULL) && (inp->sctp_socket != NULL)) {
4572 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4575 so = SCTP_INP_SO(inp);
4578 atomic_add_int(&stcb->asoc.refcnt, 1);
4579 SCTP_TCB_UNLOCK(stcb);
4581 SCTP_SOCKET_LOCK(so, 1);
4583 SCTP_TCB_LOCK(stcb);
4584 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4586 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4587 SCTP_SOCKET_UNLOCK(so, 1);
4592 sctp_sorwakeup(inp, inp->sctp_socket);
4593 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4595 SCTP_SOCKET_UNLOCK(so, 1);
4602 sctp_add_to_readq(struct sctp_inpcb *inp,
4603 struct sctp_tcb *stcb,
4604 struct sctp_queued_to_read *control,
4607 int inp_read_lock_held,
4609 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4615 * Here we must place the control on the end of the socket read
4616 * queue AND increment sb_cc so that select will work properly on
4619 struct mbuf *m, *prev = NULL;
4624 panic("Gak, inp NULL on add_to_readq");
4628 if (inp_read_lock_held == 0)
4629 SCTP_INP_READ_LOCK(inp);
4630 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4631 if (!control->on_strm_q) {
4632 sctp_free_remote_addr(control->whoFrom);
4633 if (control->data) {
4634 sctp_m_freem(control->data);
4635 control->data = NULL;
4637 sctp_free_a_readq(stcb, control);
4639 if (inp_read_lock_held == 0)
4640 SCTP_INP_READ_UNLOCK(inp);
4643 if (!(control->spec_flags & M_NOTIFICATION)) {
4644 atomic_add_int(&inp->total_recvs, 1);
4645 if (!control->do_not_ref_stcb) {
4646 atomic_add_int(&stcb->total_recvs, 1);
4650 control->held_length = 0;
4651 control->length = 0;
4653 if (SCTP_BUF_LEN(m) == 0) {
4654 /* Skip mbufs with NO length */
4657 control->data = sctp_m_free(m);
4660 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4661 m = SCTP_BUF_NEXT(prev);
4664 control->tail_mbuf = prev;
4669 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4670 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4672 sctp_sballoc(stcb, sb, m);
4673 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4674 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4676 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4677 m = SCTP_BUF_NEXT(m);
4680 control->tail_mbuf = prev;
4682 /* Everything got collapsed out?? */
4683 if (!control->on_strm_q) {
4684 sctp_free_remote_addr(control->whoFrom);
4685 sctp_free_a_readq(stcb, control);
4687 if (inp_read_lock_held == 0)
4688 SCTP_INP_READ_UNLOCK(inp);
4692 control->end_added = 1;
4694 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4695 control->on_read_q = 1;
4696 if (inp_read_lock_held == 0)
4697 SCTP_INP_READ_UNLOCK(inp);
4698 if (inp && inp->sctp_socket) {
4699 sctp_wakeup_the_read_socket(inp, stcb, so_locked);
4703 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4704 *************ALTERNATE ROUTING CODE
4707 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4708 *************ALTERNATE ROUTING CODE
4712 sctp_generate_cause(uint16_t code, char *info)
4715 struct sctp_gen_error_cause *cause;
4719 if ((code == 0) || (info == NULL)) {
4722 info_len = strlen(info);
4723 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
4726 len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len);
4727 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4729 SCTP_BUF_LEN(m) = len;
4730 cause = mtod(m, struct sctp_gen_error_cause *);
4731 cause->code = htons(code);
4732 cause->length = htons(len);
4733 memcpy(cause->info, info, info_len);
4739 sctp_generate_no_user_data_cause(uint32_t tsn)
4742 struct sctp_error_no_user_data *no_user_data_cause;
4745 len = (uint16_t)sizeof(struct sctp_error_no_user_data);
4746 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4748 SCTP_BUF_LEN(m) = len;
4749 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4750 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4751 no_user_data_cause->cause.length = htons(len);
4752 no_user_data_cause->tsn = htonl(tsn);
4757 #ifdef SCTP_MBCNT_LOGGING
4759 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4760 struct sctp_tmit_chunk *tp1, int chk_cnt)
4762 if (tp1->data == NULL) {
4765 asoc->chunks_on_out_queue -= chk_cnt;
4766 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4767 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4768 asoc->total_output_queue_size,
4773 if (asoc->total_output_queue_size >= tp1->book_size) {
4774 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4776 asoc->total_output_queue_size = 0;
4779 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4780 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4781 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4782 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4784 stcb->sctp_socket->so_snd.sb_cc = 0;
4793 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4794 uint8_t sent, int so_locked
4795 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4800 struct sctp_stream_out *strq;
4801 struct sctp_tmit_chunk *chk = NULL, *tp2;
4802 struct sctp_stream_queue_pending *sp;
4805 uint8_t foundeom = 0;
4808 int do_wakeup_routine = 0;
4810 sid = tp1->rec.data.sid;
4811 mid = tp1->rec.data.mid;
4812 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
4813 stcb->asoc.abandoned_sent[0]++;
4814 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4815 stcb->asoc.strmout[sid].abandoned_sent[0]++;
4816 #if defined(SCTP_DETAILED_STR_STATS)
4817 stcb->asoc.strmout[sid].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4820 stcb->asoc.abandoned_unsent[0]++;
4821 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4822 stcb->asoc.strmout[sid].abandoned_unsent[0]++;
4823 #if defined(SCTP_DETAILED_STR_STATS)
4824 stcb->asoc.strmout[sid].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4828 ret_sz += tp1->book_size;
4829 if (tp1->data != NULL) {
4830 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4831 sctp_flight_size_decrease(tp1);
4832 sctp_total_flight_decrease(stcb, tp1);
4834 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4835 stcb->asoc.peers_rwnd += tp1->send_size;
4836 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4838 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4840 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4843 sctp_m_freem(tp1->data);
4846 do_wakeup_routine = 1;
4847 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4848 stcb->asoc.sent_queue_cnt_removeable--;
4851 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4852 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4853 SCTP_DATA_NOT_FRAG) {
4854 /* not frag'ed we ae done */
4857 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4858 /* end of frag, we are done */
4863 * Its a begin or middle piece, we must mark all of
4867 tp1 = TAILQ_NEXT(tp1, sctp_next);
4869 } while (tp1 && notdone);
4870 if (foundeom == 0) {
4872 * The multi-part message was scattered across the send and
4875 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4876 if ((tp1->rec.data.sid != sid) ||
4877 (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) {
4881 * save to chk in case we have some on stream out
4882 * queue. If so and we have an un-transmitted one we
4883 * don't have to fudge the TSN.
4886 ret_sz += tp1->book_size;
4887 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4889 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4891 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4894 sctp_m_freem(tp1->data);
4897 /* No flight involved here book the size to 0 */
4899 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4902 do_wakeup_routine = 1;
4903 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4904 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4906 * on to the sent queue so we can wait for it to be
4909 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4911 stcb->asoc.send_queue_cnt--;
4912 stcb->asoc.sent_queue_cnt++;
4915 if (foundeom == 0) {
4917 * Still no eom found. That means there is stuff left on the
4918 * stream out queue.. yuck.
4920 SCTP_TCB_SEND_LOCK(stcb);
4921 strq = &stcb->asoc.strmout[sid];
4922 sp = TAILQ_FIRST(&strq->outqueue);
4924 sp->discard_rest = 1;
4926 * We may need to put a chunk on the queue that
4927 * holds the TSN that would have been sent with the
4931 /* Yep, we have to */
4932 sctp_alloc_a_chunk(stcb, chk);
4935 * we are hosed. All we can do is
4936 * nothing.. which will cause an
4937 * abort if the peer is paying
4942 memset(chk, 0, sizeof(*chk));
4943 chk->rec.data.rcv_flags = 0;
4944 chk->sent = SCTP_FORWARD_TSN_SKIP;
4945 chk->asoc = &stcb->asoc;
4946 if (stcb->asoc.idata_supported == 0) {
4947 if (sp->sinfo_flags & SCTP_UNORDERED) {
4948 chk->rec.data.mid = 0;
4950 chk->rec.data.mid = strq->next_mid_ordered;
4953 if (sp->sinfo_flags & SCTP_UNORDERED) {
4954 chk->rec.data.mid = strq->next_mid_unordered;
4956 chk->rec.data.mid = strq->next_mid_ordered;
4959 chk->rec.data.sid = sp->sid;
4960 chk->rec.data.ppid = sp->ppid;
4961 chk->rec.data.context = sp->context;
4962 chk->flags = sp->act_flags;
4964 chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4965 strq->chunks_on_queues++;
4966 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4967 stcb->asoc.sent_queue_cnt++;
4968 stcb->asoc.pr_sctp_cnt++;
4970 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4971 if (sp->sinfo_flags & SCTP_UNORDERED) {
4972 chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED;
4974 if (stcb->asoc.idata_supported == 0) {
4975 if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) {
4976 strq->next_mid_ordered++;
4979 if (sp->sinfo_flags & SCTP_UNORDERED) {
4980 strq->next_mid_unordered++;
4982 strq->next_mid_ordered++;
4988 * Pull any data to free up the SB and allow
4989 * sender to "add more" while we will throw
4992 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4993 ret_sz += sp->length;
4994 do_wakeup_routine = 1;
4996 sctp_m_freem(sp->data);
4998 sp->tail_mbuf = NULL;
5002 SCTP_TCB_SEND_UNLOCK(stcb);
5004 if (do_wakeup_routine) {
5005 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
5008 so = SCTP_INP_SO(stcb->sctp_ep);
5010 atomic_add_int(&stcb->asoc.refcnt, 1);
5011 SCTP_TCB_UNLOCK(stcb);
5012 SCTP_SOCKET_LOCK(so, 1);
5013 SCTP_TCB_LOCK(stcb);
5014 atomic_subtract_int(&stcb->asoc.refcnt, 1);
5015 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
5016 /* assoc was freed while we were unlocked */
5017 SCTP_SOCKET_UNLOCK(so, 1);
5022 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
5023 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
5025 SCTP_SOCKET_UNLOCK(so, 1);
5033 * checks to see if the given address, sa, is one that is currently known by
5034 * the kernel note: can't distinguish the same address on multiple interfaces
5035 * and doesn't handle multiple addresses with different zone/scope id's note:
5036 * ifa_ifwithaddr() compares the entire sockaddr struct
5039 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
5042 struct sctp_laddr *laddr;
5044 if (holds_lock == 0) {
5045 SCTP_INP_RLOCK(inp);
5048 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5049 if (laddr->ifa == NULL)
5051 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
5054 if (addr->sa_family == AF_INET) {
5055 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5056 laddr->ifa->address.sin.sin_addr.s_addr) {
5058 if (holds_lock == 0) {
5059 SCTP_INP_RUNLOCK(inp);
5061 return (laddr->ifa);
5067 if (addr->sa_family == AF_INET6) {
5068 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5069 &laddr->ifa->address.sin6)) {
5071 if (holds_lock == 0) {
5072 SCTP_INP_RUNLOCK(inp);
5074 return (laddr->ifa);
5080 if (holds_lock == 0) {
5081 SCTP_INP_RUNLOCK(inp);
5087 sctp_get_ifa_hash_val(struct sockaddr *addr)
5089 switch (addr->sa_family) {
5093 struct sockaddr_in *sin;
5095 sin = (struct sockaddr_in *)addr;
5096 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
5102 struct sockaddr_in6 *sin6;
5103 uint32_t hash_of_addr;
5105 sin6 = (struct sockaddr_in6 *)addr;
5106 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5107 sin6->sin6_addr.s6_addr32[1] +
5108 sin6->sin6_addr.s6_addr32[2] +
5109 sin6->sin6_addr.s6_addr32[3]);
5110 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5111 return (hash_of_addr);
5121 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5123 struct sctp_ifa *sctp_ifap;
5124 struct sctp_vrf *vrf;
5125 struct sctp_ifalist *hash_head;
5126 uint32_t hash_of_addr;
5128 if (holds_lock == 0)
5129 SCTP_IPI_ADDR_RLOCK();
5131 vrf = sctp_find_vrf(vrf_id);
5133 if (holds_lock == 0)
5134 SCTP_IPI_ADDR_RUNLOCK();
5138 hash_of_addr = sctp_get_ifa_hash_val(addr);
5140 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5141 if (hash_head == NULL) {
5142 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5143 hash_of_addr, (uint32_t)vrf->vrf_addr_hashmark,
5144 (uint32_t)(hash_of_addr & vrf->vrf_addr_hashmark));
5145 sctp_print_address(addr);
5146 SCTP_PRINTF("No such bucket for address\n");
5147 if (holds_lock == 0)
5148 SCTP_IPI_ADDR_RUNLOCK();
5152 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5153 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5156 if (addr->sa_family == AF_INET) {
5157 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5158 sctp_ifap->address.sin.sin_addr.s_addr) {
5160 if (holds_lock == 0)
5161 SCTP_IPI_ADDR_RUNLOCK();
5168 if (addr->sa_family == AF_INET6) {
5169 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5170 &sctp_ifap->address.sin6)) {
5172 if (holds_lock == 0)
5173 SCTP_IPI_ADDR_RUNLOCK();
5180 if (holds_lock == 0)
5181 SCTP_IPI_ADDR_RUNLOCK();
5186 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t *freed_so_far, int hold_rlock,
5189 /* User pulled some data, do we need a rwnd update? */
5190 struct epoch_tracker et;
5193 struct socket *so = NULL;
5198 atomic_add_int(&stcb->asoc.refcnt, 1);
5200 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_ACK_SENT) ||
5201 (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED | SCTP_STATE_SHUTDOWN_RECEIVED))) {
5202 /* Pre-check If we are freeing no update */
5205 SCTP_INP_INCR_REF(stcb->sctp_ep);
5206 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5207 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5210 so = stcb->sctp_socket;
5214 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5215 /* Have you have freed enough to look */
5217 /* Yep, its worth a look and the lock overhead */
5219 /* Figure out what the rwnd would be */
5220 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5221 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5222 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5226 if (dif >= rwnd_req) {
5228 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5231 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5233 * One last check before we allow the guy possibly
5234 * to get in. There is a race, where the guy has not
5235 * reached the gate. In that case
5239 SCTP_TCB_LOCK(stcb);
5240 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5241 /* No reports here */
5242 SCTP_TCB_UNLOCK(stcb);
5245 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5246 NET_EPOCH_ENTER(et);
5247 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5249 sctp_chunk_output(stcb->sctp_ep, stcb,
5250 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5251 /* make sure no timer is running */
5253 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5254 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5255 SCTP_TCB_UNLOCK(stcb);
5257 /* Update how much we have pending */
5258 stcb->freed_by_sorcv_sincelast = dif;
5261 if (so && r_unlocked && hold_rlock) {
5262 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5265 SCTP_INP_DECR_REF(stcb->sctp_ep);
5267 atomic_add_int(&stcb->asoc.refcnt, -1);
5272 sctp_sorecvmsg(struct socket *so,
5275 struct sockaddr *from,
5278 struct sctp_sndrcvinfo *sinfo,
5282 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5283 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5284 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5285 * On the way out we may send out any combination of:
5286 * MSG_NOTIFICATION MSG_EOR
5289 struct sctp_inpcb *inp = NULL;
5293 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5294 struct mbuf *m = NULL;
5295 struct sctp_tcb *stcb = NULL;
5296 int wakeup_read_socket = 0;
5297 int freecnt_applied = 0;
5298 int out_flags = 0, in_flags = 0;
5299 int block_allowed = 1;
5300 uint32_t freed_so_far = 0;
5301 ssize_t copied_so_far = 0;
5302 int in_eeor_mode = 0;
5303 int no_rcv_needed = 0;
5304 uint32_t rwnd_req = 0;
5305 int hold_sblock = 0;
5308 uint32_t held_length = 0;
5309 int sockbuf_lock = 0;
5312 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5317 in_flags = *msg_flags;
5318 if (in_flags & MSG_PEEK)
5319 SCTP_STAT_INCR(sctps_read_peeks);
5323 slen = uio->uio_resid;
5325 /* Pull in and set up our int flags */
5326 if (in_flags & MSG_OOB) {
5327 /* Out of band's NOT supported */
5328 return (EOPNOTSUPP);
5330 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5331 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5334 if ((in_flags & (MSG_DONTWAIT
5337 SCTP_SO_IS_NBIO(so)) {
5340 /* setup the endpoint */
5341 inp = (struct sctp_inpcb *)so->so_pcb;
5343 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5346 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5347 /* Must be at least a MTU's worth */
5348 if (rwnd_req < SCTP_MIN_RWND)
5349 rwnd_req = SCTP_MIN_RWND;
5350 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5351 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5352 sctp_misc_ints(SCTP_SORECV_ENTER,
5353 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5355 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5356 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5357 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5361 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5363 goto release_unlocked;
5370 if (hold_sblock == 0) {
5371 SOCKBUF_LOCK(&so->so_rcv);
5374 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5375 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5378 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5380 error = so->so_error;
5381 if ((in_flags & MSG_PEEK) == 0)
5385 if (so->so_rcv.sb_cc == 0) {
5392 if (so->so_rcv.sb_cc <= held_length) {
5394 error = so->so_error;
5395 if ((in_flags & MSG_PEEK) == 0) {
5400 if ((so->so_rcv.sb_cc == 0) &&
5401 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5402 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5403 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5405 * For active open side clear flags for
5406 * re-use passive open is blocked by
5409 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5411 * You were aborted, passive side
5414 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5417 so->so_state &= ~(SS_ISCONNECTING |
5418 SS_ISDISCONNECTING |
5422 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5423 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5430 if (block_allowed) {
5431 error = sbwait(&so->so_rcv);
5436 goto restart_nosblocks;
5438 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5439 error = EWOULDBLOCK;
5443 if (hold_sblock == 1) {
5444 SOCKBUF_UNLOCK(&so->so_rcv);
5447 /* we possibly have data we can read */
5448 /* sa_ignore FREED_MEMORY */
5449 control = TAILQ_FIRST(&inp->read_queue);
5450 if (control == NULL) {
5452 * This could be happening since the appender did the
5453 * increment but as not yet did the tailq insert onto the
5456 if (hold_rlock == 0) {
5457 SCTP_INP_READ_LOCK(inp);
5459 control = TAILQ_FIRST(&inp->read_queue);
5460 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5462 panic("Huh, its non zero and nothing on control?");
5464 so->so_rcv.sb_cc = 0;
5466 SCTP_INP_READ_UNLOCK(inp);
5471 if ((control->length == 0) &&
5472 (control->do_not_ref_stcb)) {
5474 * Clean up code for freeing assoc that left behind a
5475 * pdapi.. maybe a peer in EEOR that just closed after
5476 * sending and never indicated a EOR.
5478 if (hold_rlock == 0) {
5480 SCTP_INP_READ_LOCK(inp);
5482 control->held_length = 0;
5483 if (control->data) {
5484 /* Hmm there is data here .. fix */
5488 m_tmp = control->data;
5490 cnt += SCTP_BUF_LEN(m_tmp);
5491 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5492 control->tail_mbuf = m_tmp;
5493 control->end_added = 1;
5495 m_tmp = SCTP_BUF_NEXT(m_tmp);
5497 control->length = cnt;
5500 TAILQ_REMOVE(&inp->read_queue, control, next);
5501 /* Add back any hiddend data */
5502 sctp_free_remote_addr(control->whoFrom);
5503 sctp_free_a_readq(stcb, control);
5507 SCTP_INP_READ_UNLOCK(inp);
5511 if ((control->length == 0) &&
5512 (control->end_added == 1)) {
5514 * Do we also need to check for (control->pdapi_aborted ==
5517 if (hold_rlock == 0) {
5519 SCTP_INP_READ_LOCK(inp);
5521 TAILQ_REMOVE(&inp->read_queue, control, next);
5522 if (control->data) {
5524 panic("control->data not null but control->length == 0");
5526 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5527 sctp_m_freem(control->data);
5528 control->data = NULL;
5531 if (control->aux_data) {
5532 sctp_m_free(control->aux_data);
5533 control->aux_data = NULL;
5536 if (control->on_strm_q) {
5537 panic("About to free ctl:%p so:%p and its in %d",
5538 control, so, control->on_strm_q);
5541 sctp_free_remote_addr(control->whoFrom);
5542 sctp_free_a_readq(stcb, control);
5545 SCTP_INP_READ_UNLOCK(inp);
5549 if (control->length == 0) {
5550 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5552 /* find a more suitable one then this */
5553 ctl = TAILQ_NEXT(control, next);
5555 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5557 (ctl->spec_flags & M_NOTIFICATION) ||
5558 ((ctl->do_not_ref_stcb == 0) &&
5559 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5562 * If we have a different TCB next, and there is data
5563 * present. If we have already taken some (pdapi), OR we can
5564 * ref the tcb and no delivery as started on this stream, we
5565 * take it. Note we allow a notification on a different
5566 * assoc to be delivered..
5570 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5572 ((ctl->some_taken) ||
5573 ((ctl->do_not_ref_stcb == 0) &&
5574 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5575 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5577 * If we have the same tcb, and there is data present, and we
5578 * have the strm interleave feature present. Then if we have
5579 * taken some (pdapi) or we can refer to tht tcb AND we have
5580 * not started a delivery for this stream, we can take it.
5581 * Note we do NOT allow a notificaiton on the same assoc to
5587 ctl = TAILQ_NEXT(ctl, next);
5591 * if we reach here, not suitable replacement is available
5592 * <or> fragment interleave is NOT on. So stuff the sb_cc
5593 * into the our held count, and its time to sleep again.
5595 held_length = so->so_rcv.sb_cc;
5596 control->held_length = so->so_rcv.sb_cc;
5599 /* Clear the held length since there is something to read */
5600 control->held_length = 0;
5603 * If we reach here, control has a some data for us to read off.
5604 * Note that stcb COULD be NULL.
5606 if (hold_rlock == 0) {
5608 SCTP_INP_READ_LOCK(inp);
5610 control->some_taken++;
5611 stcb = control->stcb;
5613 if ((control->do_not_ref_stcb == 0) &&
5614 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5615 if (freecnt_applied == 0)
5617 } else if (control->do_not_ref_stcb == 0) {
5618 /* you can't free it on me please */
5620 * The lock on the socket buffer protects us so the
5621 * free code will stop. But since we used the
5622 * socketbuf lock and the sender uses the tcb_lock
5623 * to increment, we need to use the atomic add to
5626 if (freecnt_applied) {
5628 panic("refcnt already incremented");
5630 SCTP_PRINTF("refcnt already incremented?\n");
5633 atomic_add_int(&stcb->asoc.refcnt, 1);
5634 freecnt_applied = 1;
5637 * Setup to remember how much we have not yet told
5638 * the peer our rwnd has opened up. Note we grab the
5639 * value from the tcb from last time. Note too that
5640 * sack sending clears this when a sack is sent,
5641 * which is fine. Once we hit the rwnd_req, we then
5642 * will go to the sctp_user_rcvd() that will not
5643 * lock until it KNOWs it MUST send a WUP-SACK.
5645 freed_so_far = (uint32_t)stcb->freed_by_sorcv_sincelast;
5646 stcb->freed_by_sorcv_sincelast = 0;
5650 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5651 control->do_not_ref_stcb == 0) {
5652 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5655 /* First lets get off the sinfo and sockaddr info */
5656 if ((sinfo != NULL) && (filling_sinfo != 0)) {
5657 sinfo->sinfo_stream = control->sinfo_stream;
5658 sinfo->sinfo_ssn = (uint16_t)control->mid;
5659 sinfo->sinfo_flags = control->sinfo_flags;
5660 sinfo->sinfo_ppid = control->sinfo_ppid;
5661 sinfo->sinfo_context = control->sinfo_context;
5662 sinfo->sinfo_timetolive = control->sinfo_timetolive;
5663 sinfo->sinfo_tsn = control->sinfo_tsn;
5664 sinfo->sinfo_cumtsn = control->sinfo_cumtsn;
5665 sinfo->sinfo_assoc_id = control->sinfo_assoc_id;
5666 nxt = TAILQ_NEXT(control, next);
5667 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5668 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5669 struct sctp_extrcvinfo *s_extra;
5671 s_extra = (struct sctp_extrcvinfo *)sinfo;
5674 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5675 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5676 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5678 if (nxt->spec_flags & M_NOTIFICATION) {
5679 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5681 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5682 s_extra->serinfo_next_length = nxt->length;
5683 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5684 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5685 if (nxt->tail_mbuf != NULL) {
5686 if (nxt->end_added) {
5687 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5692 * we explicitly 0 this, since the memcpy
5693 * got some other things beyond the older
5694 * sinfo_ that is on the control's structure
5698 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5699 s_extra->serinfo_next_aid = 0;
5700 s_extra->serinfo_next_length = 0;
5701 s_extra->serinfo_next_ppid = 0;
5702 s_extra->serinfo_next_stream = 0;
5706 * update off the real current cum-ack, if we have an stcb.
5708 if ((control->do_not_ref_stcb == 0) && stcb)
5709 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5711 * mask off the high bits, we keep the actual chunk bits in
5714 sinfo->sinfo_flags &= 0x00ff;
5715 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5716 sinfo->sinfo_flags |= SCTP_UNORDERED;
5719 #ifdef SCTP_ASOCLOG_OF_TSNS
5721 int index, newindex;
5722 struct sctp_pcbtsn_rlog *entry;
5725 index = inp->readlog_index;
5726 newindex = index + 1;
5727 if (newindex >= SCTP_READ_LOG_SIZE) {
5730 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5731 entry = &inp->readlog[index];
5732 entry->vtag = control->sinfo_assoc_id;
5733 entry->strm = control->sinfo_stream;
5734 entry->seq = (uint16_t)control->mid;
5735 entry->sz = control->length;
5736 entry->flgs = control->sinfo_flags;
5739 if ((fromlen > 0) && (from != NULL)) {
5740 union sctp_sockstore store;
5743 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5746 len = sizeof(struct sockaddr_in6);
5747 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5748 store.sin6.sin6_port = control->port_from;
5754 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5755 len = sizeof(struct sockaddr_in6);
5756 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5758 store.sin6.sin6_port = control->port_from;
5760 len = sizeof(struct sockaddr_in);
5761 store.sin = control->whoFrom->ro._l_addr.sin;
5762 store.sin.sin_port = control->port_from;
5765 len = sizeof(struct sockaddr_in);
5766 store.sin = control->whoFrom->ro._l_addr.sin;
5767 store.sin.sin_port = control->port_from;
5775 memcpy(from, &store, min((size_t)fromlen, len));
5778 struct sockaddr_in6 lsa6, *from6;
5780 from6 = (struct sockaddr_in6 *)from;
5781 sctp_recover_scope_mac(from6, (&lsa6));
5786 SCTP_INP_READ_UNLOCK(inp);
5790 SOCKBUF_UNLOCK(&so->so_rcv);
5793 /* now copy out what data we can */
5795 /* copy out each mbuf in the chain up to length */
5799 /* Move out all we can */
5800 cp_len = uio->uio_resid;
5801 my_len = SCTP_BUF_LEN(m);
5802 if (cp_len > my_len) {
5803 /* not enough in this buf */
5807 SCTP_INP_READ_UNLOCK(inp);
5811 error = uiomove(mtod(m, char *), (int)cp_len, uio);
5813 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5817 if ((control->do_not_ref_stcb == 0) && stcb &&
5818 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5822 /* error we are out of here */
5825 SCTP_INP_READ_LOCK(inp);
5827 if (cp_len == SCTP_BUF_LEN(m)) {
5828 if ((SCTP_BUF_NEXT(m) == NULL) &&
5829 (control->end_added)) {
5830 out_flags |= MSG_EOR;
5831 if ((control->do_not_ref_stcb == 0) &&
5832 (control->stcb != NULL) &&
5833 ((control->spec_flags & M_NOTIFICATION) == 0))
5834 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5836 if (control->spec_flags & M_NOTIFICATION) {
5837 out_flags |= MSG_NOTIFICATION;
5839 /* we ate up the mbuf */
5840 if (in_flags & MSG_PEEK) {
5842 m = SCTP_BUF_NEXT(m);
5843 copied_so_far += cp_len;
5845 /* dispose of the mbuf */
5846 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5847 sctp_sblog(&so->so_rcv,
5848 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5850 sctp_sbfree(control, stcb, &so->so_rcv, m);
5851 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5852 sctp_sblog(&so->so_rcv,
5853 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5855 copied_so_far += cp_len;
5856 freed_so_far += (uint32_t)cp_len;
5857 freed_so_far += MSIZE;
5858 atomic_subtract_int(&control->length, cp_len);
5859 control->data = sctp_m_free(m);
5862 * been through it all, must hold sb
5863 * lock ok to null tail
5865 if (control->data == NULL) {
5867 if ((control->end_added == 0) ||
5868 (TAILQ_NEXT(control, next) == NULL)) {
5876 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5877 panic("Hmm we don't own the lock?");
5881 control->tail_mbuf = NULL;
5883 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5884 panic("end_added, nothing left and no MSG_EOR");
5890 /* Do we need to trim the mbuf? */
5891 if (control->spec_flags & M_NOTIFICATION) {
5892 out_flags |= MSG_NOTIFICATION;
5894 if ((in_flags & MSG_PEEK) == 0) {
5895 SCTP_BUF_RESV_UF(m, cp_len);
5896 SCTP_BUF_LEN(m) -= (int)cp_len;
5897 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5898 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, (int)cp_len);
5900 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5901 if ((control->do_not_ref_stcb == 0) &&
5903 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5905 copied_so_far += cp_len;
5906 freed_so_far += (uint32_t)cp_len;
5907 freed_so_far += MSIZE;
5908 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5909 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5910 SCTP_LOG_SBRESULT, 0);
5912 atomic_subtract_int(&control->length, cp_len);
5914 copied_so_far += cp_len;
5917 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5920 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5921 (control->do_not_ref_stcb == 0) &&
5922 (freed_so_far >= rwnd_req)) {
5923 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5925 } /* end while(m) */
5927 * At this point we have looked at it all and we either have
5928 * a MSG_EOR/or read all the user wants... <OR>
5929 * control->length == 0.
5931 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5932 /* we are done with this control */
5933 if (control->length == 0) {
5934 if (control->data) {
5936 panic("control->data not null at read eor?");
5938 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5939 sctp_m_freem(control->data);
5940 control->data = NULL;
5944 if (hold_rlock == 0) {
5945 SCTP_INP_READ_LOCK(inp);
5948 TAILQ_REMOVE(&inp->read_queue, control, next);
5949 /* Add back any hiddend data */
5950 if (control->held_length) {
5952 control->held_length = 0;
5953 wakeup_read_socket = 1;
5955 if (control->aux_data) {
5956 sctp_m_free(control->aux_data);
5957 control->aux_data = NULL;
5959 no_rcv_needed = control->do_not_ref_stcb;
5960 sctp_free_remote_addr(control->whoFrom);
5961 control->data = NULL;
5963 if (control->on_strm_q) {
5964 panic("About to free ctl:%p so:%p and its in %d",
5965 control, so, control->on_strm_q);
5968 sctp_free_a_readq(stcb, control);
5970 if ((freed_so_far >= rwnd_req) &&
5971 (no_rcv_needed == 0))
5972 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5976 * The user did not read all of this
5977 * message, turn off the returned MSG_EOR
5978 * since we are leaving more behind on the
5982 if (control->end_added &&
5983 (control->data == NULL) &&
5984 (control->tail_mbuf == NULL)) {
5985 panic("Gak, control->length is corrupt?");
5988 no_rcv_needed = control->do_not_ref_stcb;
5989 out_flags &= ~MSG_EOR;
5992 if (out_flags & MSG_EOR) {
5995 if ((uio->uio_resid == 0) ||
5997 (copied_so_far >= max(so->so_rcv.sb_lowat, 1)))) {
6001 * If I hit here the receiver wants more and this message is
6002 * NOT done (pd-api). So two questions. Can we block? if not
6003 * we are done. Did the user NOT set MSG_WAITALL?
6005 if (block_allowed == 0) {
6009 * We need to wait for more data a few things: - We don't
6010 * sbunlock() so we don't get someone else reading. - We
6011 * must be sure to account for the case where what is added
6012 * is NOT to our control when we wakeup.
6016 * Do we need to tell the transport a rwnd update might be
6017 * needed before we go to sleep?
6019 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
6020 ((freed_so_far >= rwnd_req) &&
6021 (control->do_not_ref_stcb == 0) &&
6022 (no_rcv_needed == 0))) {
6023 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6026 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
6030 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
6033 if (hold_rlock == 1) {
6034 SCTP_INP_READ_UNLOCK(inp);
6037 if (hold_sblock == 0) {
6038 SOCKBUF_LOCK(&so->so_rcv);
6041 if ((copied_so_far) && (control->length == 0) &&
6042 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
6045 if (so->so_rcv.sb_cc <= control->held_length) {
6046 error = sbwait(&so->so_rcv);
6050 control->held_length = 0;
6053 SOCKBUF_UNLOCK(&so->so_rcv);
6056 if (control->length == 0) {
6057 /* still nothing here */
6058 if (control->end_added == 1) {
6059 /* he aborted, or is done i.e.did a shutdown */
6060 out_flags |= MSG_EOR;
6061 if (control->pdapi_aborted) {
6062 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6063 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6065 out_flags |= MSG_TRUNC;
6067 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6068 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6070 goto done_with_control;
6072 if (so->so_rcv.sb_cc > held_length) {
6073 control->held_length = so->so_rcv.sb_cc;
6076 goto wait_some_more;
6077 } else if (control->data == NULL) {
6079 * we must re-sync since data is probably being
6082 SCTP_INP_READ_LOCK(inp);
6083 if ((control->length > 0) && (control->data == NULL)) {
6085 * big trouble.. we have the lock and its
6089 panic("Impossible data==NULL length !=0");
6091 out_flags |= MSG_EOR;
6092 out_flags |= MSG_TRUNC;
6093 control->length = 0;
6094 SCTP_INP_READ_UNLOCK(inp);
6095 goto done_with_control;
6097 SCTP_INP_READ_UNLOCK(inp);
6098 /* We will fall around to get more data */
6103 * Give caller back the mbuf chain,
6104 * store in uio_resid the length
6106 wakeup_read_socket = 0;
6107 if ((control->end_added == 0) ||
6108 (TAILQ_NEXT(control, next) == NULL)) {
6109 /* Need to get rlock */
6110 if (hold_rlock == 0) {
6111 SCTP_INP_READ_LOCK(inp);
6115 if (control->end_added) {
6116 out_flags |= MSG_EOR;
6117 if ((control->do_not_ref_stcb == 0) &&
6118 (control->stcb != NULL) &&
6119 ((control->spec_flags & M_NOTIFICATION) == 0))
6120 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6122 if (control->spec_flags & M_NOTIFICATION) {
6123 out_flags |= MSG_NOTIFICATION;
6125 uio->uio_resid = control->length;
6126 *mp = control->data;
6129 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6130 sctp_sblog(&so->so_rcv,
6131 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6133 sctp_sbfree(control, stcb, &so->so_rcv, m);
6134 freed_so_far += (uint32_t)SCTP_BUF_LEN(m);
6135 freed_so_far += MSIZE;
6136 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6137 sctp_sblog(&so->so_rcv,
6138 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6140 m = SCTP_BUF_NEXT(m);
6142 control->data = control->tail_mbuf = NULL;
6143 control->length = 0;
6144 if (out_flags & MSG_EOR) {
6145 /* Done with this control */
6146 goto done_with_control;
6150 if (hold_rlock == 1) {
6151 SCTP_INP_READ_UNLOCK(inp);
6154 if (hold_sblock == 1) {
6155 SOCKBUF_UNLOCK(&so->so_rcv);
6159 sbunlock(&so->so_rcv);
6164 SOCKBUF_UNLOCK(&so->so_rcv);
6167 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6168 if ((freed_so_far >= rwnd_req) &&
6169 (control && (control->do_not_ref_stcb == 0)) &&
6170 (no_rcv_needed == 0))
6171 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6175 *msg_flags = out_flags;
6177 if (((out_flags & MSG_EOR) == 0) &&
6178 ((in_flags & MSG_PEEK) == 0) &&
6180 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6181 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6182 struct sctp_extrcvinfo *s_extra;
6184 s_extra = (struct sctp_extrcvinfo *)sinfo;
6185 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6187 if (hold_rlock == 1) {
6188 SCTP_INP_READ_UNLOCK(inp);
6191 SOCKBUF_UNLOCK(&so->so_rcv);
6194 sbunlock(&so->so_rcv);
6197 if (freecnt_applied) {
6199 * The lock on the socket buffer protects us so the free
6200 * code will stop. But since we used the socketbuf lock and
6201 * the sender uses the tcb_lock to increment, we need to use
6202 * the atomic add to the refcnt.
6206 panic("stcb for refcnt has gone NULL?");
6212 /* Save the value back for next time */
6213 stcb->freed_by_sorcv_sincelast = freed_so_far;
6214 atomic_add_int(&stcb->asoc.refcnt, -1);
6216 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6218 sctp_misc_ints(SCTP_SORECV_DONE,
6220 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6224 sctp_misc_ints(SCTP_SORECV_DONE,
6226 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6232 if (wakeup_read_socket) {
6233 sctp_sorwakeup(inp, so);
6239 #ifdef SCTP_MBUF_LOGGING
6241 sctp_m_free(struct mbuf *m)
6243 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6244 sctp_log_mb(m, SCTP_MBUF_IFREE);
6250 sctp_m_freem(struct mbuf *mb)
6253 mb = sctp_m_free(mb);
6259 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6262 * Given a local address. For all associations that holds the
6263 * address, request a peer-set-primary.
6265 struct sctp_ifa *ifa;
6266 struct sctp_laddr *wi;
6268 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6270 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6271 return (EADDRNOTAVAIL);
6274 * Now that we have the ifa we must awaken the iterator with this
6277 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6279 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6282 /* Now incr the count and int wi structure */
6283 SCTP_INCR_LADDR_COUNT();
6284 memset(wi, 0, sizeof(*wi));
6285 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6287 wi->action = SCTP_SET_PRIM_ADDR;
6288 atomic_add_int(&ifa->refcount, 1);
6290 /* Now add it to the work queue */
6291 SCTP_WQ_ADDR_LOCK();
6293 * Should this really be a tailq? As it is we will process the
6296 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6297 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6298 (struct sctp_inpcb *)NULL,
6299 (struct sctp_tcb *)NULL,
6300 (struct sctp_nets *)NULL);
6301 SCTP_WQ_ADDR_UNLOCK();
6307 sctp_soreceive(struct socket *so,
6308 struct sockaddr **psa,
6311 struct mbuf **controlp,
6315 uint8_t sockbuf[256];
6316 struct sockaddr *from;
6317 struct sctp_extrcvinfo sinfo;
6318 int filling_sinfo = 1;
6320 struct sctp_inpcb *inp;
6322 inp = (struct sctp_inpcb *)so->so_pcb;
6323 /* pickup the assoc we are reading from */
6325 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6328 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6329 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6330 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6331 (controlp == NULL)) {
6332 /* user does not want the sndrcv ctl */
6336 from = (struct sockaddr *)sockbuf;
6337 fromlen = sizeof(sockbuf);
6344 if (filling_sinfo) {
6345 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6347 if (flagsp != NULL) {
6352 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, &flags,
6353 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6354 if (flagsp != NULL) {
6357 if (controlp != NULL) {
6358 /* copy back the sinfo in a CMSG format */
6359 if (filling_sinfo && ((flags & MSG_NOTIFICATION) == 0)) {
6360 *controlp = sctp_build_ctl_nchunk(inp,
6361 (struct sctp_sndrcvinfo *)&sinfo);
6367 /* copy back the address info */
6368 if (from && from->sa_len) {
6369 *psa = sodupsockaddr(from, M_NOWAIT);
6382 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6383 int totaddr, int *error)
6387 struct sctp_inpcb *inp;
6388 struct sockaddr *sa;
6391 struct sockaddr_in *sin;
6394 struct sockaddr_in6 *sin6;
6398 inp = stcb->sctp_ep;
6400 for (i = 0; i < totaddr; i++) {
6401 switch (sa->sa_family) {
6404 incr = sizeof(struct sockaddr_in);
6405 sin = (struct sockaddr_in *)sa;
6406 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6407 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6408 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6409 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6410 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6411 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6415 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6416 SCTP_DONOT_SETSCOPE,
6417 SCTP_ADDR_IS_CONFIRMED)) {
6418 /* assoc gone no un-lock */
6419 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6420 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6421 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6430 incr = sizeof(struct sockaddr_in6);
6431 sin6 = (struct sockaddr_in6 *)sa;
6432 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6433 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6434 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6435 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6436 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6440 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6441 SCTP_DONOT_SETSCOPE,
6442 SCTP_ADDR_IS_CONFIRMED)) {
6443 /* assoc gone no un-lock */
6444 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6445 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6446 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6456 sa = (struct sockaddr *)((caddr_t)sa + incr);
6463 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6464 unsigned int totaddr,
6465 unsigned int *num_v4, unsigned int *num_v6,
6468 struct sockaddr *sa;
6469 struct sctp_tcb *stcb;
6470 unsigned int incr, at, i;
6474 *num_v6 = *num_v4 = 0;
6475 /* account and validate addresses */
6479 for (i = 0; i < totaddr; i++) {
6480 if (at + sizeof(struct sockaddr) > limit) {
6483 switch (sa->sa_family) {
6486 incr = (unsigned int)sizeof(struct sockaddr_in);
6487 if (sa->sa_len != incr) {
6496 struct sockaddr_in6 *sin6;
6498 sin6 = (struct sockaddr_in6 *)sa;
6499 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6500 /* Must be non-mapped for connectx */
6503 incr = (unsigned int)sizeof(struct sockaddr_in6);
6504 if (sa->sa_len != incr) {
6514 if ((at + incr) > limit) {
6517 SCTP_INP_INCR_REF(inp);
6518 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6520 SCTP_TCB_UNLOCK(stcb);
6523 SCTP_INP_DECR_REF(inp);
6526 sa = (struct sockaddr *)((caddr_t)sa + incr);
6532 * sctp_bindx(ADD) for one address.
6533 * assumes all arguments are valid/checked by caller.
6536 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6537 struct sockaddr *sa, sctp_assoc_t assoc_id,
6538 uint32_t vrf_id, int *error, void *p)
6540 struct sockaddr *addr_touse;
6541 #if defined(INET) && defined(INET6)
6542 struct sockaddr_in sin;
6545 /* see if we're bound all already! */
6546 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6547 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6553 if (sa->sa_family == AF_INET6) {
6555 struct sockaddr_in6 *sin6;
6558 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6559 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6563 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6564 /* can only bind v6 on PF_INET6 sockets */
6565 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6570 sin6 = (struct sockaddr_in6 *)addr_touse;
6571 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6572 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6573 SCTP_IPV6_V6ONLY(inp)) {
6574 /* can't bind v4-mapped on PF_INET sockets */
6575 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6579 in6_sin6_2_sin(&sin, sin6);
6580 addr_touse = (struct sockaddr *)&sin;
6586 if (sa->sa_family == AF_INET) {
6587 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6588 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6592 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6593 SCTP_IPV6_V6ONLY(inp)) {
6594 /* can't bind v4 on PF_INET sockets */
6595 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6601 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6603 /* Can't get proc for Net/Open BSD */
6604 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6608 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6612 * No locks required here since bind and mgmt_ep_sa all do their own
6613 * locking. If we do something for the FIX: below we may need to
6614 * lock in that case.
6616 if (assoc_id == 0) {
6617 /* add the address */
6618 struct sctp_inpcb *lep;
6619 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6621 /* validate the incoming port */
6622 if ((lsin->sin_port != 0) &&
6623 (lsin->sin_port != inp->sctp_lport)) {
6624 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6628 /* user specified 0 port, set it to existing port */
6629 lsin->sin_port = inp->sctp_lport;
6632 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6635 * We must decrement the refcount since we have the
6636 * ep already and are binding. No remove going on
6639 SCTP_INP_DECR_REF(lep);
6642 /* already bound to it.. ok */
6644 } else if (lep == NULL) {
6645 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6646 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6647 SCTP_ADD_IP_ADDRESS,
6650 *error = EADDRINUSE;
6656 * FIX: decide whether we allow assoc based bindx
6662 * sctp_bindx(DELETE) for one address.
6663 * assumes all arguments are valid/checked by caller.
6666 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6667 struct sockaddr *sa, sctp_assoc_t assoc_id,
6668 uint32_t vrf_id, int *error)
6670 struct sockaddr *addr_touse;
6671 #if defined(INET) && defined(INET6)
6672 struct sockaddr_in sin;
6675 /* see if we're bound all already! */
6676 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6677 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6683 if (sa->sa_family == AF_INET6) {
6685 struct sockaddr_in6 *sin6;
6688 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6689 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6693 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6694 /* can only bind v6 on PF_INET6 sockets */
6695 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6700 sin6 = (struct sockaddr_in6 *)addr_touse;
6701 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6702 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6703 SCTP_IPV6_V6ONLY(inp)) {
6704 /* can't bind mapped-v4 on PF_INET sockets */
6705 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6709 in6_sin6_2_sin(&sin, sin6);
6710 addr_touse = (struct sockaddr *)&sin;
6716 if (sa->sa_family == AF_INET) {
6717 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6718 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6722 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6723 SCTP_IPV6_V6ONLY(inp)) {
6724 /* can't bind v4 on PF_INET sockets */
6725 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6732 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6733 * below is ever changed we may need to lock before calling
6734 * association level binding.
6736 if (assoc_id == 0) {
6737 /* delete the address */
6738 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6739 SCTP_DEL_IP_ADDRESS,
6743 * FIX: decide whether we allow assoc based bindx
6749 * returns the valid local address count for an assoc, taking into account
6753 sctp_local_addr_count(struct sctp_tcb *stcb)
6757 int ipv4_local_scope, ipv4_addr_legal;
6760 int local_scope, site_scope, ipv6_addr_legal;
6762 struct sctp_vrf *vrf;
6763 struct sctp_ifn *sctp_ifn;
6764 struct sctp_ifa *sctp_ifa;
6767 /* Turn on all the appropriate scopes */
6768 loopback_scope = stcb->asoc.scope.loopback_scope;
6770 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6771 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6774 local_scope = stcb->asoc.scope.local_scope;
6775 site_scope = stcb->asoc.scope.site_scope;
6776 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6778 SCTP_IPI_ADDR_RLOCK();
6779 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6781 /* no vrf, no addresses */
6782 SCTP_IPI_ADDR_RUNLOCK();
6786 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6788 * bound all case: go through all ifns on the vrf
6790 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6791 if ((loopback_scope == 0) &&
6792 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6795 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6796 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6798 switch (sctp_ifa->address.sa.sa_family) {
6801 if (ipv4_addr_legal) {
6802 struct sockaddr_in *sin;
6804 sin = &sctp_ifa->address.sin;
6805 if (sin->sin_addr.s_addr == 0) {
6812 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6813 &sin->sin_addr) != 0) {
6816 if ((ipv4_local_scope == 0) &&
6817 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6820 /* count this one */
6829 if (ipv6_addr_legal) {
6830 struct sockaddr_in6 *sin6;
6832 sin6 = &sctp_ifa->address.sin6;
6833 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6836 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6837 &sin6->sin6_addr) != 0) {
6840 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6841 if (local_scope == 0)
6843 if (sin6->sin6_scope_id == 0) {
6844 if (sa6_recoverscope(sin6) != 0)
6857 if ((site_scope == 0) &&
6858 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6861 /* count this one */
6876 struct sctp_laddr *laddr;
6878 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6880 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6883 /* count this one */
6887 SCTP_IPI_ADDR_RUNLOCK();
6891 #if defined(SCTP_LOCAL_TRACE_BUF)
6894 sctp_log_trace(uint32_t subsys, const char *str SCTP_UNUSED, uint32_t a, uint32_t b, uint32_t c, uint32_t d, uint32_t e, uint32_t f)
6896 uint32_t saveindex, newindex;
6899 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6900 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6903 newindex = saveindex + 1;
6905 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6906 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6909 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6910 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6911 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6912 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6913 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6914 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6915 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6916 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6921 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
6922 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
6926 struct ip6_hdr *ip6;
6928 struct mbuf *sp, *last;
6929 struct udphdr *uhdr;
6932 if ((m->m_flags & M_PKTHDR) == 0) {
6933 /* Can't handle one that is not a pkt hdr */
6936 /* Pull the src port */
6937 iph = mtod(m, struct ip *);
6938 uhdr = (struct udphdr *)((caddr_t)iph + off);
6939 port = uhdr->uh_sport;
6941 * Split out the mbuf chain. Leave the IP header in m, place the
6944 sp = m_split(m, off, M_NOWAIT);
6946 /* Gak, drop packet, we can't do a split */
6949 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6950 /* Gak, packet can't have an SCTP header in it - too small */
6954 /* Now pull up the UDP header and SCTP header together */
6955 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6957 /* Gak pullup failed */
6960 /* Trim out the UDP header */
6961 m_adj(sp, sizeof(struct udphdr));
6963 /* Now reconstruct the mbuf chain */
6964 for (last = m; last->m_next; last = last->m_next);
6966 m->m_pkthdr.len += sp->m_pkthdr.len;
6968 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
6969 * checksum and it was valid. Since CSUM_DATA_VALID ==
6970 * CSUM_SCTP_VALID this would imply that the HW also verified the
6971 * SCTP checksum. Therefore, clear the bit.
6973 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
6974 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
6976 if_name(m->m_pkthdr.rcvif),
6977 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
6978 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
6979 iph = mtod(m, struct ip *);
6980 switch (iph->ip_v) {
6983 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
6984 sctp_input_with_port(m, off, port);
6988 case IPV6_VERSION >> 4:
6989 ip6 = mtod(m, struct ip6_hdr *);
6990 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
6991 sctp6_input_with_port(&m, &off, port);
7005 sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED)
7007 struct ip *outer_ip, *inner_ip;
7011 struct sctp_inpcb *inp;
7012 struct sctp_tcb *stcb;
7013 struct sctp_nets *net;
7014 struct sctp_init_chunk *ch;
7015 struct sockaddr_in src, dst;
7018 inner_ip = (struct ip *)vip;
7019 icmp = (struct icmp *)((caddr_t)inner_ip -
7020 (sizeof(struct icmp) - sizeof(struct ip)));
7021 outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
7022 if (ntohs(outer_ip->ip_len) <
7023 sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
7026 udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
7027 sh = (struct sctphdr *)(udp + 1);
7028 memset(&src, 0, sizeof(struct sockaddr_in));
7029 src.sin_family = AF_INET;
7030 src.sin_len = sizeof(struct sockaddr_in);
7031 src.sin_port = sh->src_port;
7032 src.sin_addr = inner_ip->ip_src;
7033 memset(&dst, 0, sizeof(struct sockaddr_in));
7034 dst.sin_family = AF_INET;
7035 dst.sin_len = sizeof(struct sockaddr_in);
7036 dst.sin_port = sh->dest_port;
7037 dst.sin_addr = inner_ip->ip_dst;
7039 * 'dst' holds the dest of the packet that failed to be sent. 'src'
7040 * holds our local endpoint address. Thus we reverse the dst and the
7041 * src in the lookup.
7045 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7046 (struct sockaddr *)&src,
7048 SCTP_DEFAULT_VRFID);
7049 if ((stcb != NULL) &&
7052 /* Check the UDP port numbers */
7053 if ((udp->uh_dport != net->port) ||
7054 (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7055 SCTP_TCB_UNLOCK(stcb);
7058 /* Check the verification tag */
7059 if (ntohl(sh->v_tag) != 0) {
7061 * This must be the verification tag used for
7062 * sending out packets. We don't consider packets
7063 * reflecting the verification tag.
7065 if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
7066 SCTP_TCB_UNLOCK(stcb);
7070 if (ntohs(outer_ip->ip_len) >=
7072 8 + (inner_ip->ip_hl << 2) + 8 + 20) {
7074 * In this case we can check if we got an
7075 * INIT chunk and if the initiate tag
7078 ch = (struct sctp_init_chunk *)(sh + 1);
7079 if ((ch->ch.chunk_type != SCTP_INITIATION) ||
7080 (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
7081 SCTP_TCB_UNLOCK(stcb);
7085 SCTP_TCB_UNLOCK(stcb);
7089 type = icmp->icmp_type;
7090 code = icmp->icmp_code;
7091 if ((type == ICMP_UNREACH) &&
7092 (code == ICMP_UNREACH_PORT)) {
7093 code = ICMP_UNREACH_PROTOCOL;
7095 sctp_notify(inp, stcb, net, type, code,
7096 ntohs(inner_ip->ip_len),
7097 (uint32_t)ntohs(icmp->icmp_nextmtu));
7099 if ((stcb == NULL) && (inp != NULL)) {
7100 /* reduce ref-count */
7101 SCTP_INP_WLOCK(inp);
7102 SCTP_INP_DECR_REF(inp);
7103 SCTP_INP_WUNLOCK(inp);
7106 SCTP_TCB_UNLOCK(stcb);
7115 sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED)
7117 struct ip6ctlparam *ip6cp;
7118 struct sctp_inpcb *inp;
7119 struct sctp_tcb *stcb;
7120 struct sctp_nets *net;
7123 struct sockaddr_in6 src, dst;
7126 ip6cp = (struct ip6ctlparam *)d;
7128 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid.
7130 if (ip6cp->ip6c_m == NULL) {
7134 * Check if we can safely examine the ports and the verification tag
7135 * of the SCTP common header.
7137 if (ip6cp->ip6c_m->m_pkthdr.len <
7138 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) {
7141 /* Copy out the UDP header. */
7142 memset(&udp, 0, sizeof(struct udphdr));
7143 m_copydata(ip6cp->ip6c_m,
7145 sizeof(struct udphdr),
7147 /* Copy out the port numbers and the verification tag. */
7148 memset(&sh, 0, sizeof(struct sctphdr));
7149 m_copydata(ip6cp->ip6c_m,
7150 ip6cp->ip6c_off + sizeof(struct udphdr),
7151 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
7153 memset(&src, 0, sizeof(struct sockaddr_in6));
7154 src.sin6_family = AF_INET6;
7155 src.sin6_len = sizeof(struct sockaddr_in6);
7156 src.sin6_port = sh.src_port;
7157 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
7158 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7161 memset(&dst, 0, sizeof(struct sockaddr_in6));
7162 dst.sin6_family = AF_INET6;
7163 dst.sin6_len = sizeof(struct sockaddr_in6);
7164 dst.sin6_port = sh.dest_port;
7165 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
7166 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7171 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7172 (struct sockaddr *)&src,
7173 &inp, &net, 1, SCTP_DEFAULT_VRFID);
7174 if ((stcb != NULL) &&
7177 /* Check the UDP port numbers */
7178 if ((udp.uh_dport != net->port) ||
7179 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7180 SCTP_TCB_UNLOCK(stcb);
7183 /* Check the verification tag */
7184 if (ntohl(sh.v_tag) != 0) {
7186 * This must be the verification tag used for
7187 * sending out packets. We don't consider packets
7188 * reflecting the verification tag.
7190 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
7191 SCTP_TCB_UNLOCK(stcb);
7195 if (ip6cp->ip6c_m->m_pkthdr.len >=
7196 ip6cp->ip6c_off + sizeof(struct udphdr) +
7197 sizeof(struct sctphdr) +
7198 sizeof(struct sctp_chunkhdr) +
7199 offsetof(struct sctp_init, a_rwnd)) {
7201 * In this case we can check if we got an
7202 * INIT chunk and if the initiate tag
7205 uint32_t initiate_tag;
7208 m_copydata(ip6cp->ip6c_m,
7210 sizeof(struct udphdr) +
7211 sizeof(struct sctphdr),
7213 (caddr_t)&chunk_type);
7214 m_copydata(ip6cp->ip6c_m,
7216 sizeof(struct udphdr) +
7217 sizeof(struct sctphdr) +
7218 sizeof(struct sctp_chunkhdr),
7220 (caddr_t)&initiate_tag);
7221 if ((chunk_type != SCTP_INITIATION) ||
7222 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
7223 SCTP_TCB_UNLOCK(stcb);
7227 SCTP_TCB_UNLOCK(stcb);
7231 type = ip6cp->ip6c_icmp6->icmp6_type;
7232 code = ip6cp->ip6c_icmp6->icmp6_code;
7233 if ((type == ICMP6_DST_UNREACH) &&
7234 (code == ICMP6_DST_UNREACH_NOPORT)) {
7235 type = ICMP6_PARAM_PROB;
7236 code = ICMP6_PARAMPROB_NEXTHEADER;
7238 sctp6_notify(inp, stcb, net, type, code,
7239 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
7241 if ((stcb == NULL) && (inp != NULL)) {
7242 /* reduce inp's ref-count */
7243 SCTP_INP_WLOCK(inp);
7244 SCTP_INP_DECR_REF(inp);
7245 SCTP_INP_WUNLOCK(inp);
7248 SCTP_TCB_UNLOCK(stcb);
7255 sctp_over_udp_stop(void)
7258 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7262 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7263 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7264 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7268 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7269 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7270 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7276 sctp_over_udp_start(void)
7281 struct sockaddr_in sin;
7284 struct sockaddr_in6 sin6;
7287 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7290 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7291 if (ntohs(port) == 0) {
7292 /* Must have a port set */
7296 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7297 /* Already running -- must stop first */
7302 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7303 /* Already running -- must stop first */
7308 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7309 SOCK_DGRAM, IPPROTO_UDP,
7310 curthread->td_ucred, curthread))) {
7311 sctp_over_udp_stop();
7314 /* Call the special UDP hook. */
7315 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7316 sctp_recv_udp_tunneled_packet,
7317 sctp_recv_icmp_tunneled_packet,
7319 sctp_over_udp_stop();
7322 /* Ok, we have a socket, bind it to the port. */
7323 memset(&sin, 0, sizeof(struct sockaddr_in));
7324 sin.sin_len = sizeof(struct sockaddr_in);
7325 sin.sin_family = AF_INET;
7326 sin.sin_port = htons(port);
7327 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7328 (struct sockaddr *)&sin, curthread))) {
7329 sctp_over_udp_stop();
7334 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7335 SOCK_DGRAM, IPPROTO_UDP,
7336 curthread->td_ucred, curthread))) {
7337 sctp_over_udp_stop();
7340 /* Call the special UDP hook. */
7341 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7342 sctp_recv_udp_tunneled_packet,
7343 sctp_recv_icmp6_tunneled_packet,
7345 sctp_over_udp_stop();
7348 /* Ok, we have a socket, bind it to the port. */
7349 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7350 sin6.sin6_len = sizeof(struct sockaddr_in6);
7351 sin6.sin6_family = AF_INET6;
7352 sin6.sin6_port = htons(port);
7353 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7354 (struct sockaddr *)&sin6, curthread))) {
7355 sctp_over_udp_stop();
7363 * sctp_min_mtu ()returns the minimum of all non-zero arguments.
7364 * If all arguments are zero, zero is returned.
7367 sctp_min_mtu(uint32_t mtu1, uint32_t mtu2, uint32_t mtu3)
7372 return (min(mtu1, min(mtu2, mtu3)));
7374 return (min(mtu1, mtu2));
7378 return (min(mtu1, mtu3));
7386 return (min(mtu2, mtu3));
7397 sctp_hc_set_mtu(union sctp_sockstore *addr, uint16_t fibnum, uint32_t mtu)
7399 struct in_conninfo inc;
7401 memset(&inc, 0, sizeof(struct in_conninfo));
7402 inc.inc_fibnum = fibnum;
7403 switch (addr->sa.sa_family) {
7406 inc.inc_faddr = addr->sin.sin_addr;
7411 inc.inc_flags |= INC_ISIPV6;
7412 inc.inc6_faddr = addr->sin6.sin6_addr;
7418 tcp_hc_updatemtu(&inc, (u_long)mtu);
7422 sctp_hc_get_mtu(union sctp_sockstore *addr, uint16_t fibnum)
7424 struct in_conninfo inc;
7426 memset(&inc, 0, sizeof(struct in_conninfo));
7427 inc.inc_fibnum = fibnum;
7428 switch (addr->sa.sa_family) {
7431 inc.inc_faddr = addr->sin.sin_addr;
7436 inc.inc_flags |= INC_ISIPV6;
7437 inc.inc6_faddr = addr->sin6.sin6_addr;
7443 return ((uint32_t)tcp_hc_getmtu(&inc));
7447 sctp_set_state(struct sctp_tcb *stcb, int new_state)
7449 #if defined(KDTRACE_HOOKS)
7450 int old_state = stcb->asoc.state;
7453 KASSERT((new_state & ~SCTP_STATE_MASK) == 0,
7454 ("sctp_set_state: Can't set substate (new_state = %x)",
7456 stcb->asoc.state = (stcb->asoc.state & ~SCTP_STATE_MASK) | new_state;
7457 if ((new_state == SCTP_STATE_SHUTDOWN_RECEIVED) ||
7458 (new_state == SCTP_STATE_SHUTDOWN_SENT) ||
7459 (new_state == SCTP_STATE_SHUTDOWN_ACK_SENT)) {
7460 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_SHUTDOWN_PENDING);
7462 #if defined(KDTRACE_HOOKS)
7463 if (((old_state & SCTP_STATE_MASK) != new_state) &&
7464 !(((old_state & SCTP_STATE_MASK) == SCTP_STATE_EMPTY) &&
7465 (new_state == SCTP_STATE_INUSE))) {
7466 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);
7472 sctp_add_substate(struct sctp_tcb *stcb, int substate)
7474 #if defined(KDTRACE_HOOKS)
7475 int old_state = stcb->asoc.state;
7478 KASSERT((substate & SCTP_STATE_MASK) == 0,
7479 ("sctp_add_substate: Can't set state (substate = %x)",
7481 stcb->asoc.state |= substate;
7482 #if defined(KDTRACE_HOOKS)
7483 if (((substate & SCTP_STATE_ABOUT_TO_BE_FREED) &&
7484 ((old_state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) ||
7485 ((substate & SCTP_STATE_SHUTDOWN_PENDING) &&
7486 ((old_state & SCTP_STATE_SHUTDOWN_PENDING) == 0))) {
7487 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);