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>
66 #define KTR_SCTP KTR_SUBSYS
69 extern const struct sctp_cc_functions sctp_cc_functions[];
70 extern const struct sctp_ss_functions sctp_ss_functions[];
73 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr)
75 #if defined(SCTP_LOCAL_TRACE_BUF)
76 struct sctp_cwnd_log sctp_clog;
78 sctp_clog.x.sb.stcb = stcb;
79 sctp_clog.x.sb.so_sbcc = sb->sb_cc;
81 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
83 sctp_clog.x.sb.stcb_sbcc = 0;
84 sctp_clog.x.sb.incr = incr;
85 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
88 sctp_clog.x.misc.log1,
89 sctp_clog.x.misc.log2,
90 sctp_clog.x.misc.log3,
91 sctp_clog.x.misc.log4);
96 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
98 #if defined(SCTP_LOCAL_TRACE_BUF)
99 struct sctp_cwnd_log sctp_clog;
101 sctp_clog.x.close.inp = (void *)inp;
102 sctp_clog.x.close.sctp_flags = inp->sctp_flags;
104 sctp_clog.x.close.stcb = (void *)stcb;
105 sctp_clog.x.close.state = (uint16_t)stcb->asoc.state;
107 sctp_clog.x.close.stcb = 0;
108 sctp_clog.x.close.state = 0;
110 sctp_clog.x.close.loc = loc;
111 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
112 SCTP_LOG_EVENT_CLOSE,
114 sctp_clog.x.misc.log1,
115 sctp_clog.x.misc.log2,
116 sctp_clog.x.misc.log3,
117 sctp_clog.x.misc.log4);
122 rto_logging(struct sctp_nets *net, int from)
124 #if defined(SCTP_LOCAL_TRACE_BUF)
125 struct sctp_cwnd_log sctp_clog;
127 memset(&sctp_clog, 0, sizeof(sctp_clog));
128 sctp_clog.x.rto.net = (void *)net;
129 sctp_clog.x.rto.rtt = net->rtt / 1000;
130 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
133 sctp_clog.x.misc.log1,
134 sctp_clog.x.misc.log2,
135 sctp_clog.x.misc.log3,
136 sctp_clog.x.misc.log4);
141 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
143 #if defined(SCTP_LOCAL_TRACE_BUF)
144 struct sctp_cwnd_log sctp_clog;
146 sctp_clog.x.strlog.stcb = stcb;
147 sctp_clog.x.strlog.n_tsn = tsn;
148 sctp_clog.x.strlog.n_sseq = sseq;
149 sctp_clog.x.strlog.e_tsn = 0;
150 sctp_clog.x.strlog.e_sseq = 0;
151 sctp_clog.x.strlog.strm = stream;
152 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
155 sctp_clog.x.misc.log1,
156 sctp_clog.x.misc.log2,
157 sctp_clog.x.misc.log3,
158 sctp_clog.x.misc.log4);
163 sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
165 #if defined(SCTP_LOCAL_TRACE_BUF)
166 struct sctp_cwnd_log sctp_clog;
168 sctp_clog.x.nagle.stcb = (void *)stcb;
169 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
170 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
171 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
172 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
173 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
174 SCTP_LOG_EVENT_NAGLE,
176 sctp_clog.x.misc.log1,
177 sctp_clog.x.misc.log2,
178 sctp_clog.x.misc.log3,
179 sctp_clog.x.misc.log4);
184 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
186 #if defined(SCTP_LOCAL_TRACE_BUF)
187 struct sctp_cwnd_log sctp_clog;
189 sctp_clog.x.sack.cumack = cumack;
190 sctp_clog.x.sack.oldcumack = old_cumack;
191 sctp_clog.x.sack.tsn = tsn;
192 sctp_clog.x.sack.numGaps = gaps;
193 sctp_clog.x.sack.numDups = dups;
194 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
197 sctp_clog.x.misc.log1,
198 sctp_clog.x.misc.log2,
199 sctp_clog.x.misc.log3,
200 sctp_clog.x.misc.log4);
205 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
207 #if defined(SCTP_LOCAL_TRACE_BUF)
208 struct sctp_cwnd_log sctp_clog;
210 memset(&sctp_clog, 0, sizeof(sctp_clog));
211 sctp_clog.x.map.base = map;
212 sctp_clog.x.map.cum = cum;
213 sctp_clog.x.map.high = high;
214 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
217 sctp_clog.x.misc.log1,
218 sctp_clog.x.misc.log2,
219 sctp_clog.x.misc.log3,
220 sctp_clog.x.misc.log4);
225 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from)
227 #if defined(SCTP_LOCAL_TRACE_BUF)
228 struct sctp_cwnd_log sctp_clog;
230 memset(&sctp_clog, 0, sizeof(sctp_clog));
231 sctp_clog.x.fr.largest_tsn = biggest_tsn;
232 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
233 sctp_clog.x.fr.tsn = tsn;
234 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
237 sctp_clog.x.misc.log1,
238 sctp_clog.x.misc.log2,
239 sctp_clog.x.misc.log3,
240 sctp_clog.x.misc.log4);
244 #ifdef SCTP_MBUF_LOGGING
246 sctp_log_mb(struct mbuf *m, int from)
248 #if defined(SCTP_LOCAL_TRACE_BUF)
249 struct sctp_cwnd_log sctp_clog;
251 sctp_clog.x.mb.mp = m;
252 sctp_clog.x.mb.mbuf_flags = (uint8_t)(SCTP_BUF_GET_FLAGS(m));
253 sctp_clog.x.mb.size = (uint16_t)(SCTP_BUF_LEN(m));
254 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
255 if (SCTP_BUF_IS_EXTENDED(m)) {
256 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
257 sctp_clog.x.mb.refcnt = (uint8_t)(SCTP_BUF_EXTEND_REFCNT(m));
259 sctp_clog.x.mb.ext = 0;
260 sctp_clog.x.mb.refcnt = 0;
262 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
265 sctp_clog.x.misc.log1,
266 sctp_clog.x.misc.log2,
267 sctp_clog.x.misc.log3,
268 sctp_clog.x.misc.log4);
273 sctp_log_mbc(struct mbuf *m, int from)
277 for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
278 sctp_log_mb(mat, from);
284 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from)
286 #if defined(SCTP_LOCAL_TRACE_BUF)
287 struct sctp_cwnd_log sctp_clog;
289 if (control == NULL) {
290 SCTP_PRINTF("Gak log of NULL?\n");
293 sctp_clog.x.strlog.stcb = control->stcb;
294 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
295 sctp_clog.x.strlog.n_sseq = (uint16_t)control->mid;
296 sctp_clog.x.strlog.strm = control->sinfo_stream;
297 if (poschk != NULL) {
298 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
299 sctp_clog.x.strlog.e_sseq = (uint16_t)poschk->mid;
301 sctp_clog.x.strlog.e_tsn = 0;
302 sctp_clog.x.strlog.e_sseq = 0;
304 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
307 sctp_clog.x.misc.log1,
308 sctp_clog.x.misc.log2,
309 sctp_clog.x.misc.log3,
310 sctp_clog.x.misc.log4);
315 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
317 #if defined(SCTP_LOCAL_TRACE_BUF)
318 struct sctp_cwnd_log sctp_clog;
320 sctp_clog.x.cwnd.net = net;
321 if (stcb->asoc.send_queue_cnt > 255)
322 sctp_clog.x.cwnd.cnt_in_send = 255;
324 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
325 if (stcb->asoc.stream_queue_cnt > 255)
326 sctp_clog.x.cwnd.cnt_in_str = 255;
328 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
331 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
332 sctp_clog.x.cwnd.inflight = net->flight_size;
333 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
334 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
335 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
337 if (SCTP_CWNDLOG_PRESEND == from) {
338 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
340 sctp_clog.x.cwnd.cwnd_augment = augment;
341 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
344 sctp_clog.x.misc.log1,
345 sctp_clog.x.misc.log2,
346 sctp_clog.x.misc.log3,
347 sctp_clog.x.misc.log4);
352 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
354 #if defined(SCTP_LOCAL_TRACE_BUF)
355 struct sctp_cwnd_log sctp_clog;
357 memset(&sctp_clog, 0, sizeof(sctp_clog));
359 sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
362 sctp_clog.x.lock.sock = (void *)NULL;
364 sctp_clog.x.lock.inp = (void *)inp;
366 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
368 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
371 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
372 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
374 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
375 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
377 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
378 if (inp && (inp->sctp_socket)) {
379 sctp_clog.x.lock.sock_lock = mtx_owned(SOCK_MTX(inp->sctp_socket));
380 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(SOCKBUF_MTX(&inp->sctp_socket->so_rcv));
381 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(SOCKBUF_MTX(&inp->sctp_socket->so_snd));
383 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
384 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
385 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
387 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
390 sctp_clog.x.misc.log1,
391 sctp_clog.x.misc.log2,
392 sctp_clog.x.misc.log3,
393 sctp_clog.x.misc.log4);
398 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
400 #if defined(SCTP_LOCAL_TRACE_BUF)
401 struct sctp_cwnd_log sctp_clog;
403 memset(&sctp_clog, 0, sizeof(sctp_clog));
404 sctp_clog.x.cwnd.net = net;
405 sctp_clog.x.cwnd.cwnd_new_value = error;
406 sctp_clog.x.cwnd.inflight = net->flight_size;
407 sctp_clog.x.cwnd.cwnd_augment = burst;
408 if (stcb->asoc.send_queue_cnt > 255)
409 sctp_clog.x.cwnd.cnt_in_send = 255;
411 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
412 if (stcb->asoc.stream_queue_cnt > 255)
413 sctp_clog.x.cwnd.cnt_in_str = 255;
415 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
416 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
417 SCTP_LOG_EVENT_MAXBURST,
419 sctp_clog.x.misc.log1,
420 sctp_clog.x.misc.log2,
421 sctp_clog.x.misc.log3,
422 sctp_clog.x.misc.log4);
427 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
429 #if defined(SCTP_LOCAL_TRACE_BUF)
430 struct sctp_cwnd_log sctp_clog;
432 sctp_clog.x.rwnd.rwnd = peers_rwnd;
433 sctp_clog.x.rwnd.send_size = snd_size;
434 sctp_clog.x.rwnd.overhead = overhead;
435 sctp_clog.x.rwnd.new_rwnd = 0;
436 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
439 sctp_clog.x.misc.log1,
440 sctp_clog.x.misc.log2,
441 sctp_clog.x.misc.log3,
442 sctp_clog.x.misc.log4);
447 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
449 #if defined(SCTP_LOCAL_TRACE_BUF)
450 struct sctp_cwnd_log sctp_clog;
452 sctp_clog.x.rwnd.rwnd = peers_rwnd;
453 sctp_clog.x.rwnd.send_size = flight_size;
454 sctp_clog.x.rwnd.overhead = overhead;
455 sctp_clog.x.rwnd.new_rwnd = a_rwndval;
456 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
459 sctp_clog.x.misc.log1,
460 sctp_clog.x.misc.log2,
461 sctp_clog.x.misc.log3,
462 sctp_clog.x.misc.log4);
466 #ifdef SCTP_MBCNT_LOGGING
468 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
470 #if defined(SCTP_LOCAL_TRACE_BUF)
471 struct sctp_cwnd_log sctp_clog;
473 sctp_clog.x.mbcnt.total_queue_size = total_oq;
474 sctp_clog.x.mbcnt.size_change = book;
475 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
476 sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
477 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
478 SCTP_LOG_EVENT_MBCNT,
480 sctp_clog.x.misc.log1,
481 sctp_clog.x.misc.log2,
482 sctp_clog.x.misc.log3,
483 sctp_clog.x.misc.log4);
489 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
491 #if defined(SCTP_LOCAL_TRACE_BUF)
492 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
500 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from)
502 #if defined(SCTP_LOCAL_TRACE_BUF)
503 struct sctp_cwnd_log sctp_clog;
505 sctp_clog.x.wake.stcb = (void *)stcb;
506 sctp_clog.x.wake.wake_cnt = wake_cnt;
507 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
508 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
509 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
511 if (stcb->asoc.stream_queue_cnt < 0xff)
512 sctp_clog.x.wake.stream_qcnt = (uint8_t)stcb->asoc.stream_queue_cnt;
514 sctp_clog.x.wake.stream_qcnt = 0xff;
516 if (stcb->asoc.chunks_on_out_queue < 0xff)
517 sctp_clog.x.wake.chunks_on_oque = (uint8_t)stcb->asoc.chunks_on_out_queue;
519 sctp_clog.x.wake.chunks_on_oque = 0xff;
521 sctp_clog.x.wake.sctpflags = 0;
522 /* set in the defered mode stuff */
523 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
524 sctp_clog.x.wake.sctpflags |= 1;
525 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
526 sctp_clog.x.wake.sctpflags |= 2;
527 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
528 sctp_clog.x.wake.sctpflags |= 4;
529 /* what about the sb */
530 if (stcb->sctp_socket) {
531 struct socket *so = stcb->sctp_socket;
533 sctp_clog.x.wake.sbflags = (uint8_t)((so->so_snd.sb_flags & 0x00ff));
535 sctp_clog.x.wake.sbflags = 0xff;
537 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
540 sctp_clog.x.misc.log1,
541 sctp_clog.x.misc.log2,
542 sctp_clog.x.misc.log3,
543 sctp_clog.x.misc.log4);
548 sctp_log_block(uint8_t from, struct sctp_association *asoc, ssize_t sendlen)
550 #if defined(SCTP_LOCAL_TRACE_BUF)
551 struct sctp_cwnd_log sctp_clog;
553 sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
554 sctp_clog.x.blk.send_sent_qcnt = (uint16_t)(asoc->send_queue_cnt + asoc->sent_queue_cnt);
555 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
556 sctp_clog.x.blk.stream_qcnt = (uint16_t)asoc->stream_queue_cnt;
557 sctp_clog.x.blk.chunks_on_oque = (uint16_t)asoc->chunks_on_out_queue;
558 sctp_clog.x.blk.flight_size = (uint16_t)(asoc->total_flight / 1024);
559 sctp_clog.x.blk.sndlen = (uint32_t)sendlen;
560 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
561 SCTP_LOG_EVENT_BLOCK,
563 sctp_clog.x.misc.log1,
564 sctp_clog.x.misc.log2,
565 sctp_clog.x.misc.log3,
566 sctp_clog.x.misc.log4);
571 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
573 /* May need to fix this if ktrdump does not work */
577 #ifdef SCTP_AUDITING_ENABLED
578 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
579 static int sctp_audit_indx = 0;
583 sctp_print_audit_report(void)
589 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
590 if ((sctp_audit_data[i][0] == 0xe0) &&
591 (sctp_audit_data[i][1] == 0x01)) {
594 } else if (sctp_audit_data[i][0] == 0xf0) {
597 } else if ((sctp_audit_data[i][0] == 0xc0) &&
598 (sctp_audit_data[i][1] == 0x01)) {
602 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
603 (uint32_t)sctp_audit_data[i][1]);
608 for (i = 0; i < sctp_audit_indx; i++) {
609 if ((sctp_audit_data[i][0] == 0xe0) &&
610 (sctp_audit_data[i][1] == 0x01)) {
613 } else if (sctp_audit_data[i][0] == 0xf0) {
616 } else if ((sctp_audit_data[i][0] == 0xc0) &&
617 (sctp_audit_data[i][1] == 0x01)) {
621 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
622 (uint32_t)sctp_audit_data[i][1]);
631 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
632 struct sctp_nets *net)
634 int resend_cnt, tot_out, rep, tot_book_cnt;
635 struct sctp_nets *lnet;
636 struct sctp_tmit_chunk *chk;
638 sctp_audit_data[sctp_audit_indx][0] = 0xAA;
639 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
641 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
645 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
646 sctp_audit_data[sctp_audit_indx][1] = 0x01;
648 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
654 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
655 sctp_audit_data[sctp_audit_indx][1] = 0x02;
657 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
662 sctp_audit_data[sctp_audit_indx][0] = 0xA1;
663 sctp_audit_data[sctp_audit_indx][1] =
664 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
666 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
671 resend_cnt = tot_out = 0;
672 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
673 if (chk->sent == SCTP_DATAGRAM_RESEND) {
675 } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
676 tot_out += chk->book_size;
680 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
681 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
682 sctp_audit_data[sctp_audit_indx][1] = 0xA1;
684 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
687 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
688 resend_cnt, stcb->asoc.sent_queue_retran_cnt);
690 stcb->asoc.sent_queue_retran_cnt = resend_cnt;
691 sctp_audit_data[sctp_audit_indx][0] = 0xA2;
692 sctp_audit_data[sctp_audit_indx][1] =
693 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
695 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
699 if (tot_out != stcb->asoc.total_flight) {
700 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
701 sctp_audit_data[sctp_audit_indx][1] = 0xA2;
703 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
707 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
708 (int)stcb->asoc.total_flight);
709 stcb->asoc.total_flight = tot_out;
711 if (tot_book_cnt != stcb->asoc.total_flight_count) {
712 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
713 sctp_audit_data[sctp_audit_indx][1] = 0xA5;
715 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
719 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
721 stcb->asoc.total_flight_count = tot_book_cnt;
724 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
725 tot_out += lnet->flight_size;
727 if (tot_out != stcb->asoc.total_flight) {
728 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
729 sctp_audit_data[sctp_audit_indx][1] = 0xA3;
731 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
735 SCTP_PRINTF("real flight:%d net total was %d\n",
736 stcb->asoc.total_flight, tot_out);
737 /* now corrective action */
738 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
740 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
741 if ((chk->whoTo == lnet) &&
742 (chk->sent < SCTP_DATAGRAM_RESEND)) {
743 tot_out += chk->book_size;
746 if (lnet->flight_size != tot_out) {
747 SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
748 (void *)lnet, lnet->flight_size,
750 lnet->flight_size = tot_out;
755 sctp_print_audit_report();
760 sctp_audit_log(uint8_t ev, uint8_t fd)
763 sctp_audit_data[sctp_audit_indx][0] = ev;
764 sctp_audit_data[sctp_audit_indx][1] = fd;
766 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
774 * The conversion from time to ticks and vice versa is done by rounding
775 * upwards. This way we can test in the code the time to be positive and
776 * know that this corresponds to a positive number of ticks.
780 sctp_msecs_to_ticks(uint32_t msecs)
788 temp = (((uint64_t)msecs * hz) + 999) / 1000;
789 if (temp > UINT32_MAX) {
792 ticks = (uint32_t)temp;
799 sctp_ticks_to_msecs(uint32_t ticks)
807 temp = (((uint64_t)ticks * 1000) + (hz - 1)) / hz;
808 if (temp > UINT32_MAX) {
811 msecs = (uint32_t)temp;
818 sctp_secs_to_ticks(uint32_t secs)
823 temp = (uint64_t)secs * hz;
824 if (temp > UINT32_MAX) {
827 ticks = (uint32_t)temp;
833 sctp_ticks_to_secs(uint32_t ticks)
838 temp = ((uint64_t)ticks + (hz - 1)) / hz;
839 if (temp > UINT32_MAX) {
842 secs = (uint32_t)temp;
848 * sctp_stop_timers_for_shutdown() should be called
849 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
850 * state to make sure that all timers are stopped.
853 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
855 struct sctp_inpcb *inp;
856 struct sctp_nets *net;
860 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, inp, stcb, NULL,
861 SCTP_FROM_SCTPUTIL + SCTP_LOC_12);
862 sctp_timer_stop(SCTP_TIMER_TYPE_STRRESET, inp, stcb, NULL,
863 SCTP_FROM_SCTPUTIL + SCTP_LOC_13);
864 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, inp, stcb, NULL,
865 SCTP_FROM_SCTPUTIL + SCTP_LOC_14);
866 sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL,
867 SCTP_FROM_SCTPUTIL + SCTP_LOC_15);
868 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
869 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
870 SCTP_FROM_SCTPUTIL + SCTP_LOC_16);
871 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
872 SCTP_FROM_SCTPUTIL + SCTP_LOC_17);
877 sctp_stop_association_timers(struct sctp_tcb *stcb, bool stop_assoc_kill_timer)
879 struct sctp_inpcb *inp;
880 struct sctp_nets *net;
883 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, inp, stcb, NULL,
884 SCTP_FROM_SCTPUTIL + SCTP_LOC_18);
885 sctp_timer_stop(SCTP_TIMER_TYPE_STRRESET, inp, stcb, NULL,
886 SCTP_FROM_SCTPUTIL + SCTP_LOC_19);
887 if (stop_assoc_kill_timer) {
888 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
889 SCTP_FROM_SCTPUTIL + SCTP_LOC_20);
891 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, inp, stcb, NULL,
892 SCTP_FROM_SCTPUTIL + SCTP_LOC_21);
893 sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL,
894 SCTP_FROM_SCTPUTIL + SCTP_LOC_22);
895 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWNGUARD, inp, stcb, NULL,
896 SCTP_FROM_SCTPUTIL + SCTP_LOC_23);
897 /* Mobility adaptation */
898 sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED, inp, stcb, NULL,
899 SCTP_FROM_SCTPUTIL + SCTP_LOC_24);
900 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
901 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, inp, stcb, net,
902 SCTP_FROM_SCTPUTIL + SCTP_LOC_25);
903 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb, net,
904 SCTP_FROM_SCTPUTIL + SCTP_LOC_26);
905 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWN, inp, stcb, net,
906 SCTP_FROM_SCTPUTIL + SCTP_LOC_27);
907 sctp_timer_stop(SCTP_TIMER_TYPE_COOKIE, inp, stcb, net,
908 SCTP_FROM_SCTPUTIL + SCTP_LOC_28);
909 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWNACK, inp, stcb, net,
910 SCTP_FROM_SCTPUTIL + SCTP_LOC_29);
911 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
912 SCTP_FROM_SCTPUTIL + SCTP_LOC_30);
913 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
914 SCTP_FROM_SCTPUTIL + SCTP_LOC_31);
919 * A list of sizes based on typical mtu's, used only if next hop size not
920 * returned. These values MUST be multiples of 4 and MUST be ordered.
922 static uint32_t sctp_mtu_sizes[] = {
944 * Return the largest MTU in sctp_mtu_sizes smaller than val.
945 * If val is smaller than the minimum, just return the largest
946 * multiple of 4 smaller or equal to val.
947 * Ensure that the result is a multiple of 4.
950 sctp_get_prev_mtu(uint32_t val)
955 if (val <= sctp_mtu_sizes[0]) {
958 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
959 if (val <= sctp_mtu_sizes[i]) {
963 KASSERT((sctp_mtu_sizes[i - 1] & 0x00000003) == 0,
964 ("sctp_mtu_sizes[%u] not a multiple of 4", i - 1));
965 return (sctp_mtu_sizes[i - 1]);
969 * Return the smallest MTU in sctp_mtu_sizes larger than val.
970 * If val is larger than the maximum, just return the largest multiple of 4 smaller
972 * Ensure that the result is a multiple of 4.
975 sctp_get_next_mtu(uint32_t val)
977 /* select another MTU that is just bigger than this one */
981 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
982 if (val < sctp_mtu_sizes[i]) {
983 KASSERT((sctp_mtu_sizes[i] & 0x00000003) == 0,
984 ("sctp_mtu_sizes[%u] not a multiple of 4", i));
985 return (sctp_mtu_sizes[i]);
992 sctp_fill_random_store(struct sctp_pcb *m)
995 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
996 * our counter. The result becomes our good random numbers and we
997 * then setup to give these out. Note that we do no locking to
998 * protect this. This is ok, since if competing folks call this we
999 * will get more gobbled gook in the random store which is what we
1000 * want. There is a danger that two guys will use the same random
1001 * numbers, but thats ok too since that is random as well :->
1004 (void)sctp_hmac(SCTP_HMAC, (uint8_t *)m->random_numbers,
1005 sizeof(m->random_numbers), (uint8_t *)&m->random_counter,
1006 sizeof(m->random_counter), (uint8_t *)m->random_store);
1007 m->random_counter++;
1011 sctp_select_initial_TSN(struct sctp_pcb *inp)
1014 * A true implementation should use random selection process to get
1015 * the initial stream sequence number, using RFC1750 as a good
1020 int store_at, new_store;
1022 if (inp->initial_sequence_debug != 0) {
1025 ret = inp->initial_sequence_debug;
1026 inp->initial_sequence_debug++;
1030 store_at = inp->store_at;
1031 new_store = store_at + sizeof(uint32_t);
1032 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
1035 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
1038 if (new_store == 0) {
1039 /* Refill the random store */
1040 sctp_fill_random_store(inp);
1042 p = &inp->random_store[store_at];
1049 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
1055 (void)SCTP_GETTIME_TIMEVAL(&now);
1058 x = sctp_select_initial_TSN(&inp->sctp_ep);
1060 /* we never use 0 */
1063 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
1071 sctp_map_assoc_state(int kernel_state)
1075 if (kernel_state & SCTP_STATE_WAS_ABORTED) {
1076 user_state = SCTP_CLOSED;
1077 } else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) {
1078 user_state = SCTP_SHUTDOWN_PENDING;
1080 switch (kernel_state & SCTP_STATE_MASK) {
1081 case SCTP_STATE_EMPTY:
1082 user_state = SCTP_CLOSED;
1084 case SCTP_STATE_INUSE:
1085 user_state = SCTP_CLOSED;
1087 case SCTP_STATE_COOKIE_WAIT:
1088 user_state = SCTP_COOKIE_WAIT;
1090 case SCTP_STATE_COOKIE_ECHOED:
1091 user_state = SCTP_COOKIE_ECHOED;
1093 case SCTP_STATE_OPEN:
1094 user_state = SCTP_ESTABLISHED;
1096 case SCTP_STATE_SHUTDOWN_SENT:
1097 user_state = SCTP_SHUTDOWN_SENT;
1099 case SCTP_STATE_SHUTDOWN_RECEIVED:
1100 user_state = SCTP_SHUTDOWN_RECEIVED;
1102 case SCTP_STATE_SHUTDOWN_ACK_SENT:
1103 user_state = SCTP_SHUTDOWN_ACK_SENT;
1106 user_state = SCTP_CLOSED;
1110 return (user_state);
1114 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1115 uint32_t override_tag, uint32_t initial_tsn, uint32_t vrf_id,
1118 struct sctp_association *asoc;
1121 * Anything set to zero is taken care of by the allocation routine's
1126 * Up front select what scoping to apply on addresses I tell my peer
1127 * Not sure what to do with these right now, we will need to come up
1128 * with a way to set them. We may need to pass them through from the
1129 * caller in the sctp_aloc_assoc() function.
1132 #if defined(SCTP_DETAILED_STR_STATS)
1137 /* init all variables to a known value. */
1138 SCTP_SET_STATE(stcb, SCTP_STATE_INUSE);
1139 asoc->max_burst = inp->sctp_ep.max_burst;
1140 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
1141 asoc->heart_beat_delay = sctp_ticks_to_msecs(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
1142 asoc->cookie_life = inp->sctp_ep.def_cookie_life;
1143 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
1144 asoc->ecn_supported = inp->ecn_supported;
1145 asoc->prsctp_supported = inp->prsctp_supported;
1146 asoc->auth_supported = inp->auth_supported;
1147 asoc->asconf_supported = inp->asconf_supported;
1148 asoc->reconfig_supported = inp->reconfig_supported;
1149 asoc->nrsack_supported = inp->nrsack_supported;
1150 asoc->pktdrop_supported = inp->pktdrop_supported;
1151 asoc->idata_supported = inp->idata_supported;
1152 asoc->sctp_cmt_pf = (uint8_t)0;
1153 asoc->sctp_frag_point = inp->sctp_frag_point;
1154 asoc->sctp_features = inp->sctp_features;
1155 asoc->default_dscp = inp->sctp_ep.default_dscp;
1156 asoc->max_cwnd = inp->max_cwnd;
1158 if (inp->sctp_ep.default_flowlabel) {
1159 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
1161 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
1162 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
1163 asoc->default_flowlabel &= 0x000fffff;
1164 asoc->default_flowlabel |= 0x80000000;
1166 asoc->default_flowlabel = 0;
1170 asoc->sb_send_resv = 0;
1172 asoc->my_vtag = override_tag;
1174 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
1176 /* Get the nonce tags */
1177 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1178 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1179 asoc->vrf_id = vrf_id;
1181 #ifdef SCTP_ASOCLOG_OF_TSNS
1182 asoc->tsn_in_at = 0;
1183 asoc->tsn_out_at = 0;
1184 asoc->tsn_in_wrapped = 0;
1185 asoc->tsn_out_wrapped = 0;
1186 asoc->cumack_log_at = 0;
1187 asoc->cumack_log_atsnt = 0;
1189 #ifdef SCTP_FS_SPEC_LOG
1193 asoc->assoc_up_sent = 0;
1195 asoc->init_seq_number = initial_tsn;
1197 asoc->init_seq_number = sctp_select_initial_TSN(&inp->sctp_ep);
1199 asoc->asconf_seq_out = asoc->init_seq_number;
1200 asoc->str_reset_seq_out = asoc->init_seq_number;
1201 asoc->sending_seq = asoc->init_seq_number;
1202 asoc->asconf_seq_out_acked = asoc->init_seq_number - 1;
1203 /* we are optimisitic here */
1204 asoc->peer_supports_nat = 0;
1205 asoc->sent_queue_retran_cnt = 0;
1208 asoc->last_net_cmt_send_started = NULL;
1210 asoc->last_acked_seq = asoc->init_seq_number - 1;
1211 asoc->advanced_peer_ack_point = asoc->init_seq_number - 1;
1212 asoc->asconf_seq_in = asoc->init_seq_number - 1;
1214 /* here we are different, we hold the next one we expect */
1215 asoc->str_reset_seq_in = asoc->init_seq_number;
1217 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
1218 asoc->initial_rto = inp->sctp_ep.initial_rto;
1220 asoc->default_mtu = inp->sctp_ep.default_mtu;
1221 asoc->max_init_times = inp->sctp_ep.max_init_times;
1222 asoc->max_send_times = inp->sctp_ep.max_send_times;
1223 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
1224 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
1225 asoc->free_chunk_cnt = 0;
1227 asoc->iam_blocking = 0;
1228 asoc->context = inp->sctp_context;
1229 asoc->local_strreset_support = inp->local_strreset_support;
1230 asoc->def_send = inp->def_send;
1231 asoc->delayed_ack = sctp_ticks_to_msecs(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1232 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
1233 asoc->pr_sctp_cnt = 0;
1234 asoc->total_output_queue_size = 0;
1236 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1237 asoc->scope.ipv6_addr_legal = 1;
1238 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1239 asoc->scope.ipv4_addr_legal = 1;
1241 asoc->scope.ipv4_addr_legal = 0;
1244 asoc->scope.ipv6_addr_legal = 0;
1245 asoc->scope.ipv4_addr_legal = 1;
1248 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1249 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1251 asoc->smallest_mtu = inp->sctp_frag_point;
1252 asoc->minrto = inp->sctp_ep.sctp_minrto;
1253 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1255 asoc->stream_locked_on = 0;
1256 asoc->ecn_echo_cnt_onq = 0;
1257 asoc->stream_locked = 0;
1259 asoc->send_sack = 1;
1261 LIST_INIT(&asoc->sctp_restricted_addrs);
1263 TAILQ_INIT(&asoc->nets);
1264 TAILQ_INIT(&asoc->pending_reply_queue);
1265 TAILQ_INIT(&asoc->asconf_ack_sent);
1266 /* Setup to fill the hb random cache at first HB */
1267 asoc->hb_random_idx = 4;
1269 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1271 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1272 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1274 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1275 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1278 * Now the stream parameters, here we allocate space for all streams
1279 * that we request by default.
1281 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1283 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1284 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1286 if (asoc->strmout == NULL) {
1287 /* big trouble no memory */
1288 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1291 SCTP_TCB_SEND_LOCK(stcb);
1292 for (i = 0; i < asoc->streamoutcnt; i++) {
1294 * inbound side must be set to 0xffff, also NOTE when we get
1295 * the INIT-ACK back (for INIT sender) we MUST reduce the
1296 * count (streamoutcnt) but first check if we sent to any of
1297 * the upper streams that were dropped (if some were). Those
1298 * that were dropped must be notified to the upper layer as
1301 TAILQ_INIT(&asoc->strmout[i].outqueue);
1302 asoc->ss_functions.sctp_ss_init_stream(stcb, &asoc->strmout[i], NULL);
1303 asoc->strmout[i].chunks_on_queues = 0;
1304 #if defined(SCTP_DETAILED_STR_STATS)
1305 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1306 asoc->strmout[i].abandoned_sent[j] = 0;
1307 asoc->strmout[i].abandoned_unsent[j] = 0;
1310 asoc->strmout[i].abandoned_sent[0] = 0;
1311 asoc->strmout[i].abandoned_unsent[0] = 0;
1313 asoc->strmout[i].next_mid_ordered = 0;
1314 asoc->strmout[i].next_mid_unordered = 0;
1315 asoc->strmout[i].sid = i;
1316 asoc->strmout[i].last_msg_incomplete = 0;
1317 asoc->strmout[i].state = SCTP_STREAM_OPENING;
1319 asoc->ss_functions.sctp_ss_init(stcb, asoc);
1320 SCTP_TCB_SEND_UNLOCK(stcb);
1322 /* Now the mapping array */
1323 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1324 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1326 if (asoc->mapping_array == NULL) {
1327 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1328 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1331 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1332 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1334 if (asoc->nr_mapping_array == NULL) {
1335 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1336 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1337 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1340 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1342 /* Now the init of the other outqueues */
1343 TAILQ_INIT(&asoc->free_chunks);
1344 TAILQ_INIT(&asoc->control_send_queue);
1345 TAILQ_INIT(&asoc->asconf_send_queue);
1346 TAILQ_INIT(&asoc->send_queue);
1347 TAILQ_INIT(&asoc->sent_queue);
1348 TAILQ_INIT(&asoc->resetHead);
1349 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1350 TAILQ_INIT(&asoc->asconf_queue);
1351 /* authentication fields */
1352 asoc->authinfo.random = NULL;
1353 asoc->authinfo.active_keyid = 0;
1354 asoc->authinfo.assoc_key = NULL;
1355 asoc->authinfo.assoc_keyid = 0;
1356 asoc->authinfo.recv_key = NULL;
1357 asoc->authinfo.recv_keyid = 0;
1358 LIST_INIT(&asoc->shared_keys);
1359 asoc->marked_retrans = 0;
1360 asoc->port = inp->sctp_ep.port;
1364 asoc->timoshutdown = 0;
1365 asoc->timoheartbeat = 0;
1366 asoc->timocookie = 0;
1367 asoc->timoshutdownack = 0;
1368 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1369 asoc->discontinuity_time = asoc->start_time;
1370 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1371 asoc->abandoned_unsent[i] = 0;
1372 asoc->abandoned_sent[i] = 0;
1375 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1376 * freed later when the association is freed.
1382 sctp_print_mapping_array(struct sctp_association *asoc)
1384 unsigned int i, limit;
1386 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1387 asoc->mapping_array_size,
1388 asoc->mapping_array_base_tsn,
1389 asoc->cumulative_tsn,
1390 asoc->highest_tsn_inside_map,
1391 asoc->highest_tsn_inside_nr_map);
1392 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1393 if (asoc->mapping_array[limit - 1] != 0) {
1397 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1398 for (i = 0; i < limit; i++) {
1399 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1403 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1404 if (asoc->nr_mapping_array[limit - 1]) {
1408 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1409 for (i = 0; i < limit; i++) {
1410 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1417 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1419 /* mapping array needs to grow */
1420 uint8_t *new_array1, *new_array2;
1423 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1424 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1425 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1426 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1427 /* can't get more, forget it */
1428 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1430 SCTP_FREE(new_array1, SCTP_M_MAP);
1433 SCTP_FREE(new_array2, SCTP_M_MAP);
1437 memset(new_array1, 0, new_size);
1438 memset(new_array2, 0, new_size);
1439 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1440 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1441 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1442 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1443 asoc->mapping_array = new_array1;
1444 asoc->nr_mapping_array = new_array2;
1445 asoc->mapping_array_size = new_size;
1450 sctp_iterator_work(struct sctp_iterator *it)
1452 struct epoch_tracker et;
1453 struct sctp_inpcb *tinp;
1454 int iteration_count = 0;
1458 NET_EPOCH_ENTER(et);
1459 SCTP_INP_INFO_RLOCK();
1460 SCTP_ITERATOR_LOCK();
1461 sctp_it_ctl.cur_it = it;
1463 SCTP_INP_RLOCK(it->inp);
1464 SCTP_INP_DECR_REF(it->inp);
1466 if (it->inp == NULL) {
1467 /* iterator is complete */
1469 sctp_it_ctl.cur_it = NULL;
1470 SCTP_ITERATOR_UNLOCK();
1471 SCTP_INP_INFO_RUNLOCK();
1472 if (it->function_atend != NULL) {
1473 (*it->function_atend) (it->pointer, it->val);
1475 SCTP_FREE(it, SCTP_M_ITER);
1483 SCTP_INP_RLOCK(it->inp);
1485 while (((it->pcb_flags) &&
1486 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1487 ((it->pcb_features) &&
1488 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1489 /* endpoint flags or features don't match, so keep looking */
1490 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1491 SCTP_INP_RUNLOCK(it->inp);
1492 goto done_with_iterator;
1495 it->inp = LIST_NEXT(it->inp, sctp_list);
1497 SCTP_INP_RUNLOCK(tinp);
1498 if (it->inp == NULL) {
1499 goto done_with_iterator;
1501 SCTP_INP_RLOCK(it->inp);
1503 /* now go through each assoc which is in the desired state */
1504 if (it->done_current_ep == 0) {
1505 if (it->function_inp != NULL)
1506 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1507 it->done_current_ep = 1;
1509 if (it->stcb == NULL) {
1510 /* run the per instance function */
1511 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1513 if ((inp_skip) || it->stcb == NULL) {
1514 if (it->function_inp_end != NULL) {
1515 inp_skip = (*it->function_inp_end) (it->inp,
1519 SCTP_INP_RUNLOCK(it->inp);
1523 SCTP_TCB_LOCK(it->stcb);
1524 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1525 /* not in the right state... keep looking */
1526 SCTP_TCB_UNLOCK(it->stcb);
1529 /* see if we have limited out the iterator loop */
1531 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1532 /* Pause to let others grab the lock */
1533 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1534 SCTP_TCB_UNLOCK(it->stcb);
1535 SCTP_INP_INCR_REF(it->inp);
1536 SCTP_INP_RUNLOCK(it->inp);
1537 SCTP_ITERATOR_UNLOCK();
1538 SCTP_INP_INFO_RUNLOCK();
1539 SCTP_INP_INFO_RLOCK();
1540 SCTP_ITERATOR_LOCK();
1541 if (sctp_it_ctl.iterator_flags) {
1542 /* We won't be staying here */
1543 SCTP_INP_DECR_REF(it->inp);
1544 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1545 if (sctp_it_ctl.iterator_flags &
1546 SCTP_ITERATOR_STOP_CUR_IT) {
1547 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1548 goto done_with_iterator;
1550 if (sctp_it_ctl.iterator_flags &
1551 SCTP_ITERATOR_STOP_CUR_INP) {
1552 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1555 /* If we reach here huh? */
1556 SCTP_PRINTF("Unknown it ctl flag %x\n",
1557 sctp_it_ctl.iterator_flags);
1558 sctp_it_ctl.iterator_flags = 0;
1560 SCTP_INP_RLOCK(it->inp);
1561 SCTP_INP_DECR_REF(it->inp);
1562 SCTP_TCB_LOCK(it->stcb);
1563 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1564 iteration_count = 0;
1566 KASSERT(it->inp == it->stcb->sctp_ep,
1567 ("%s: stcb %p does not belong to inp %p, but inp %p",
1568 __func__, it->stcb, it->inp, it->stcb->sctp_ep));
1570 /* run function on this one */
1571 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1574 * we lie here, it really needs to have its own type but
1575 * first I must verify that this won't effect things :-0
1577 if (it->no_chunk_output == 0)
1578 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1580 SCTP_TCB_UNLOCK(it->stcb);
1582 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1583 if (it->stcb == NULL) {
1584 /* Run last function */
1585 if (it->function_inp_end != NULL) {
1586 inp_skip = (*it->function_inp_end) (it->inp,
1592 SCTP_INP_RUNLOCK(it->inp);
1594 /* done with all assocs on this endpoint, move on to next endpoint */
1595 it->done_current_ep = 0;
1596 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1599 it->inp = LIST_NEXT(it->inp, sctp_list);
1602 if (it->inp == NULL) {
1603 goto done_with_iterator;
1605 goto select_a_new_ep;
1609 sctp_iterator_worker(void)
1611 struct sctp_iterator *it;
1613 /* This function is called with the WQ lock in place */
1614 sctp_it_ctl.iterator_running = 1;
1615 while ((it = TAILQ_FIRST(&sctp_it_ctl.iteratorhead)) != NULL) {
1616 /* now lets work on this one */
1617 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1618 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1619 CURVNET_SET(it->vn);
1620 sctp_iterator_work(it);
1622 SCTP_IPI_ITERATOR_WQ_LOCK();
1623 /* sa_ignore FREED_MEMORY */
1625 sctp_it_ctl.iterator_running = 0;
1630 sctp_handle_addr_wq(void)
1632 /* deal with the ADDR wq from the rtsock calls */
1633 struct sctp_laddr *wi, *nwi;
1634 struct sctp_asconf_iterator *asc;
1636 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1637 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1639 /* Try later, no memory */
1640 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1641 (struct sctp_inpcb *)NULL,
1642 (struct sctp_tcb *)NULL,
1643 (struct sctp_nets *)NULL);
1646 LIST_INIT(&asc->list_of_work);
1649 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1650 LIST_REMOVE(wi, sctp_nxt_addr);
1651 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1655 if (asc->cnt == 0) {
1656 SCTP_FREE(asc, SCTP_M_ASC_IT);
1660 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
1661 sctp_asconf_iterator_stcb,
1662 NULL, /* No ep end for boundall */
1663 SCTP_PCB_FLAGS_BOUNDALL,
1664 SCTP_PCB_ANY_FEATURES,
1665 SCTP_ASOC_ANY_STATE,
1667 sctp_asconf_iterator_end, NULL, 0);
1669 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
1671 * Freeing if we are stopping or put back on the
1674 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
1675 sctp_asconf_iterator_end(asc, 0);
1677 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
1678 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
1680 SCTP_FREE(asc, SCTP_M_ASC_IT);
1687 * The following table shows which pointers for the inp, stcb, or net are
1688 * stored for each timer after it was started.
1690 *|Name |Timer |inp |stcb|net |
1691 *|-----------------------------|-----------------------------|----|----|----|
1692 *|SCTP_TIMER_TYPE_SEND |net->rxt_timer |Yes |Yes |Yes |
1693 *|SCTP_TIMER_TYPE_INIT |net->rxt_timer |Yes |Yes |Yes |
1694 *|SCTP_TIMER_TYPE_RECV |stcb->asoc.dack_timer |Yes |Yes |No |
1695 *|SCTP_TIMER_TYPE_SHUTDOWN |net->rxt_timer |Yes |Yes |Yes |
1696 *|SCTP_TIMER_TYPE_HEARTBEAT |net->hb_timer |Yes |Yes |Yes |
1697 *|SCTP_TIMER_TYPE_COOKIE |net->rxt_timer |Yes |Yes |Yes |
1698 *|SCTP_TIMER_TYPE_NEWCOOKIE |inp->sctp_ep.signature_change|Yes |No |No |
1699 *|SCTP_TIMER_TYPE_PATHMTURAISE |net->pmtu_timer |Yes |Yes |Yes |
1700 *|SCTP_TIMER_TYPE_SHUTDOWNACK |net->rxt_timer |Yes |Yes |Yes |
1701 *|SCTP_TIMER_TYPE_ASCONF |stcb->asoc.asconf_timer |Yes |Yes |Yes |
1702 *|SCTP_TIMER_TYPE_SHUTDOWNGUARD|stcb->asoc.shut_guard_timer |Yes |Yes |No |
1703 *|SCTP_TIMER_TYPE_AUTOCLOSE |stcb->asoc.autoclose_timer |Yes |Yes |No |
1704 *|SCTP_TIMER_TYPE_STRRESET |stcb->asoc.strreset_timer |Yes |Yes |No |
1705 *|SCTP_TIMER_TYPE_INPKILL |inp->sctp_ep.signature_change|Yes |No |No |
1706 *|SCTP_TIMER_TYPE_ASOCKILL |stcb->asoc.strreset_timer |Yes |Yes |No |
1707 *|SCTP_TIMER_TYPE_ADDR_WQ |SCTP_BASE_INFO(addr_wq_timer)|No |No |No |
1708 *|SCTP_TIMER_TYPE_PRIM_DELETED |stcb->asoc.delete_prim_timer |Yes |Yes |No |
1712 sctp_timeout_handler(void *t)
1714 struct epoch_tracker et;
1716 struct sctp_inpcb *inp;
1717 struct sctp_tcb *stcb;
1718 struct sctp_nets *net;
1719 struct sctp_timer *tmr;
1720 struct mbuf *op_err;
1723 bool did_output, released_asoc_reference;
1726 * If inp, stcb or net are not NULL, then references to these were
1727 * added when the timer was started, and must be released before
1728 * this function returns.
1730 tmr = (struct sctp_timer *)t;
1731 inp = (struct sctp_inpcb *)tmr->ep;
1732 stcb = (struct sctp_tcb *)tmr->tcb;
1733 net = (struct sctp_nets *)tmr->net;
1734 CURVNET_SET((struct vnet *)tmr->vnet);
1735 NET_EPOCH_ENTER(et);
1736 released_asoc_reference = false;
1738 #ifdef SCTP_AUDITING_ENABLED
1739 sctp_audit_log(0xF0, (uint8_t)tmr->type);
1740 sctp_auditing(3, inp, stcb, net);
1743 /* sanity checks... */
1744 KASSERT(tmr->self == NULL || tmr->self == tmr,
1745 ("sctp_timeout_handler: tmr->self corrupted"));
1746 KASSERT(SCTP_IS_TIMER_TYPE_VALID(tmr->type),
1747 ("sctp_timeout_handler: invalid timer type %d", tmr->type));
1749 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
1750 ("sctp_timeout_handler of type %d: inp = %p, stcb->sctp_ep %p",
1751 type, stcb, stcb->sctp_ep));
1752 tmr->stopped_from = 0xa001;
1753 if ((stcb != NULL) && (stcb->asoc.state == SCTP_STATE_EMPTY)) {
1754 SCTPDBG(SCTP_DEBUG_TIMER2,
1755 "Timer type %d handler exiting due to CLOSED association.\n",
1759 tmr->stopped_from = 0xa002;
1760 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d goes off.\n", type);
1761 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1762 SCTPDBG(SCTP_DEBUG_TIMER2,
1763 "Timer type %d handler exiting due to not being active.\n",
1768 tmr->stopped_from = 0xa003;
1770 SCTP_TCB_LOCK(stcb);
1772 * Release reference so that association can be freed if
1773 * necessary below. This is safe now that we have acquired
1776 atomic_add_int(&stcb->asoc.refcnt, -1);
1777 released_asoc_reference = true;
1778 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1779 ((stcb->asoc.state == SCTP_STATE_EMPTY) ||
1780 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1781 SCTPDBG(SCTP_DEBUG_TIMER2,
1782 "Timer type %d handler exiting due to CLOSED association.\n",
1786 } else if (inp != NULL) {
1787 SCTP_INP_WLOCK(inp);
1789 SCTP_WQ_ADDR_LOCK();
1792 /* Record in stopped_from which timeout occurred. */
1793 tmr->stopped_from = type;
1794 /* mark as being serviced now */
1795 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1797 * Callout has been rescheduled.
1801 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1803 * Not active, so no action.
1807 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1809 /* call the handler for the appropriate timer type */
1811 case SCTP_TIMER_TYPE_SEND:
1812 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1813 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1814 type, inp, stcb, net));
1815 SCTP_STAT_INCR(sctps_timodata);
1816 stcb->asoc.timodata++;
1817 stcb->asoc.num_send_timers_up--;
1818 if (stcb->asoc.num_send_timers_up < 0) {
1819 stcb->asoc.num_send_timers_up = 0;
1821 SCTP_TCB_LOCK_ASSERT(stcb);
1822 if (sctp_t3rxt_timer(inp, stcb, net)) {
1823 /* no need to unlock on tcb its gone */
1827 SCTP_TCB_LOCK_ASSERT(stcb);
1828 #ifdef SCTP_AUDITING_ENABLED
1829 sctp_auditing(4, inp, stcb, net);
1831 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1833 if ((stcb->asoc.num_send_timers_up == 0) &&
1834 (stcb->asoc.sent_queue_cnt > 0)) {
1835 struct sctp_tmit_chunk *chk;
1838 * Safeguard. If there on some on the sent queue
1839 * somewhere but no timers running something is
1840 * wrong... so we start a timer on the first chunk
1841 * on the send queue on whatever net it is sent to.
1843 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
1844 if (chk->whoTo != NULL) {
1849 sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, chk->whoTo);
1853 case SCTP_TIMER_TYPE_INIT:
1854 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1855 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1856 type, inp, stcb, net));
1857 SCTP_STAT_INCR(sctps_timoinit);
1858 stcb->asoc.timoinit++;
1859 if (sctp_t1init_timer(inp, stcb, net)) {
1860 /* no need to unlock on tcb its gone */
1865 case SCTP_TIMER_TYPE_RECV:
1866 KASSERT(inp != NULL && stcb != NULL && net == NULL,
1867 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1868 type, inp, stcb, net));
1869 SCTP_STAT_INCR(sctps_timosack);
1870 stcb->asoc.timosack++;
1871 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1872 #ifdef SCTP_AUDITING_ENABLED
1873 sctp_auditing(4, inp, stcb, NULL);
1875 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1878 case SCTP_TIMER_TYPE_SHUTDOWN:
1879 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1880 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1881 type, inp, stcb, net));
1882 SCTP_STAT_INCR(sctps_timoshutdown);
1883 stcb->asoc.timoshutdown++;
1884 if (sctp_shutdown_timer(inp, stcb, net)) {
1885 /* no need to unlock on tcb its gone */
1888 #ifdef SCTP_AUDITING_ENABLED
1889 sctp_auditing(4, inp, stcb, net);
1891 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1894 case SCTP_TIMER_TYPE_HEARTBEAT:
1895 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1896 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1897 type, inp, stcb, net));
1898 SCTP_STAT_INCR(sctps_timoheartbeat);
1899 stcb->asoc.timoheartbeat++;
1900 if (sctp_heartbeat_timer(inp, stcb, net)) {
1901 /* no need to unlock on tcb its gone */
1904 #ifdef SCTP_AUDITING_ENABLED
1905 sctp_auditing(4, inp, stcb, net);
1907 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1908 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1909 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1915 case SCTP_TIMER_TYPE_COOKIE:
1916 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1917 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1918 type, inp, stcb, net));
1919 SCTP_STAT_INCR(sctps_timocookie);
1920 stcb->asoc.timocookie++;
1921 if (sctp_cookie_timer(inp, stcb, net)) {
1922 /* no need to unlock on tcb its gone */
1925 #ifdef SCTP_AUDITING_ENABLED
1926 sctp_auditing(4, inp, stcb, net);
1929 * We consider T3 and Cookie timer pretty much the same with
1930 * respect to where from in chunk_output.
1932 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1935 case SCTP_TIMER_TYPE_NEWCOOKIE:
1936 KASSERT(inp != NULL && stcb == NULL && net == NULL,
1937 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1938 type, inp, stcb, net));
1939 SCTP_STAT_INCR(sctps_timosecret);
1940 (void)SCTP_GETTIME_TIMEVAL(&tv);
1941 inp->sctp_ep.time_of_secret_change = (unsigned int)tv.tv_sec;
1942 inp->sctp_ep.last_secret_number =
1943 inp->sctp_ep.current_secret_number;
1944 inp->sctp_ep.current_secret_number++;
1945 if (inp->sctp_ep.current_secret_number >=
1946 SCTP_HOW_MANY_SECRETS) {
1947 inp->sctp_ep.current_secret_number = 0;
1949 secret = (int)inp->sctp_ep.current_secret_number;
1950 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1951 inp->sctp_ep.secret_key[secret][i] =
1952 sctp_select_initial_TSN(&inp->sctp_ep);
1954 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
1957 case SCTP_TIMER_TYPE_PATHMTURAISE:
1958 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1959 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1960 type, inp, stcb, net));
1961 SCTP_STAT_INCR(sctps_timopathmtu);
1962 sctp_pathmtu_timer(inp, stcb, net);
1965 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1966 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1967 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1968 type, inp, stcb, net));
1969 if (sctp_shutdownack_timer(inp, stcb, net)) {
1970 /* no need to unlock on tcb its gone */
1973 SCTP_STAT_INCR(sctps_timoshutdownack);
1974 stcb->asoc.timoshutdownack++;
1975 #ifdef SCTP_AUDITING_ENABLED
1976 sctp_auditing(4, inp, stcb, net);
1978 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1981 case SCTP_TIMER_TYPE_ASCONF:
1982 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1983 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1984 type, inp, stcb, net));
1985 SCTP_STAT_INCR(sctps_timoasconf);
1986 if (sctp_asconf_timer(inp, stcb, net)) {
1987 /* no need to unlock on tcb its gone */
1990 #ifdef SCTP_AUDITING_ENABLED
1991 sctp_auditing(4, inp, stcb, net);
1993 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1996 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1997 KASSERT(inp != NULL && stcb != NULL && net == NULL,
1998 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1999 type, inp, stcb, net));
2000 SCTP_STAT_INCR(sctps_timoshutdownguard);
2001 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
2002 "Shutdown guard timer expired");
2003 sctp_abort_an_association(inp, stcb, op_err, true, SCTP_SO_NOT_LOCKED);
2004 /* no need to unlock on tcb its gone */
2006 case SCTP_TIMER_TYPE_AUTOCLOSE:
2007 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2008 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2009 type, inp, stcb, net));
2010 SCTP_STAT_INCR(sctps_timoautoclose);
2011 sctp_autoclose_timer(inp, stcb);
2012 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
2015 case SCTP_TIMER_TYPE_STRRESET:
2016 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2017 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2018 type, inp, stcb, net));
2019 SCTP_STAT_INCR(sctps_timostrmrst);
2020 if (sctp_strreset_timer(inp, stcb)) {
2021 /* no need to unlock on tcb its gone */
2024 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
2027 case SCTP_TIMER_TYPE_INPKILL:
2028 KASSERT(inp != NULL && stcb == NULL && net == NULL,
2029 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2030 type, inp, stcb, net));
2031 SCTP_STAT_INCR(sctps_timoinpkill);
2033 * special case, take away our increment since WE are the
2036 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
2037 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
2038 SCTP_INP_DECR_REF(inp);
2039 SCTP_INP_WUNLOCK(inp);
2040 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
2041 SCTP_CALLED_FROM_INPKILL_TIMER);
2044 case SCTP_TIMER_TYPE_ASOCKILL:
2045 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2046 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2047 type, inp, stcb, net));
2048 SCTP_STAT_INCR(sctps_timoassockill);
2049 /* Can we free it yet? */
2050 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
2051 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
2052 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
2053 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
2055 * free asoc, always unlocks (or destroy's) so prevent
2056 * duplicate unlock or unlock of a free mtx :-0
2060 case SCTP_TIMER_TYPE_ADDR_WQ:
2061 KASSERT(inp == NULL && stcb == NULL && net == NULL,
2062 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2063 type, inp, stcb, net));
2064 sctp_handle_addr_wq();
2067 case SCTP_TIMER_TYPE_PRIM_DELETED:
2068 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2069 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2070 type, inp, stcb, net));
2071 SCTP_STAT_INCR(sctps_timodelprim);
2072 sctp_delete_prim_timer(inp, stcb);
2077 panic("Unknown timer type %d", type);
2082 #ifdef SCTP_AUDITING_ENABLED
2083 sctp_audit_log(0xF1, (uint8_t)type);
2085 sctp_auditing(5, inp, stcb, net);
2087 if (did_output && (stcb != NULL)) {
2089 * Now we need to clean up the control chunk chain if an
2090 * ECNE is on it. It must be marked as UNSENT again so next
2091 * call will continue to send it until such time that we get
2092 * a CWR, to remove it. It is, however, less likely that we
2093 * will find a ecn echo on the chain though.
2095 sctp_fix_ecn_echo(&stcb->asoc);
2099 SCTP_TCB_UNLOCK(stcb);
2100 } else if (inp != NULL) {
2101 SCTP_INP_WUNLOCK(inp);
2103 SCTP_WQ_ADDR_UNLOCK();
2107 /* These reference counts were incremented in sctp_timer_start(). */
2109 SCTP_INP_DECR_REF(inp);
2111 if ((stcb != NULL) && !released_asoc_reference) {
2112 atomic_add_int(&stcb->asoc.refcnt, -1);
2115 sctp_free_remote_addr(net);
2117 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d handler finished.\n", type);
2123 * The following table shows which parameters must be provided
2124 * when calling sctp_timer_start(). For parameters not being
2125 * provided, NULL must be used.
2127 * |Name |inp |stcb|net |
2128 * |-----------------------------|----|----|----|
2129 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes |
2130 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes |
2131 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No |
2132 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes |
2133 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes |
2134 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes |
2135 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No |
2136 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes |
2137 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes |
2138 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |Yes |
2139 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No |
2140 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No |
2141 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |Yes |
2142 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No |
2143 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No |
2144 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No |
2145 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No |
2150 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2151 struct sctp_nets *net)
2153 struct sctp_timer *tmr;
2155 uint32_t rndval, jitter;
2157 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
2158 ("sctp_timer_start of type %d: inp = %p, stcb->sctp_ep %p",
2159 t_type, stcb, stcb->sctp_ep));
2162 SCTP_TCB_LOCK_ASSERT(stcb);
2163 } else if (inp != NULL) {
2164 SCTP_INP_WLOCK_ASSERT(inp);
2166 SCTP_WQ_ADDR_LOCK_ASSERT();
2170 * Don't restart timer on association that's about to be
2173 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
2174 (t_type != SCTP_TIMER_TYPE_ASOCKILL)) {
2175 SCTPDBG(SCTP_DEBUG_TIMER2,
2176 "Timer type %d not started: inp=%p, stcb=%p, net=%p (stcb deleted).\n",
2177 t_type, inp, stcb, net);
2180 /* Don't restart timer on net that's been removed. */
2181 if (net != NULL && (net->dest_state & SCTP_ADDR_BEING_DELETED)) {
2182 SCTPDBG(SCTP_DEBUG_TIMER2,
2183 "Timer type %d not started: inp=%p, stcb=%p, net=%p (net deleted).\n",
2184 t_type, inp, stcb, net);
2189 case SCTP_TIMER_TYPE_SEND:
2190 /* Here we use the RTO timer. */
2191 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2193 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2194 t_type, inp, stcb, net);
2199 tmr = &net->rxt_timer;
2200 if (net->RTO == 0) {
2201 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2203 to_ticks = sctp_msecs_to_ticks(net->RTO);
2206 case SCTP_TIMER_TYPE_INIT:
2208 * Here we use the INIT timer default usually about 1
2211 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2213 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2214 t_type, inp, stcb, net);
2219 tmr = &net->rxt_timer;
2220 if (net->RTO == 0) {
2221 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2223 to_ticks = sctp_msecs_to_ticks(net->RTO);
2226 case SCTP_TIMER_TYPE_RECV:
2228 * Here we use the Delayed-Ack timer value from the inp,
2229 * ususually about 200ms.
2231 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2233 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2234 t_type, inp, stcb, net);
2239 tmr = &stcb->asoc.dack_timer;
2240 to_ticks = sctp_msecs_to_ticks(stcb->asoc.delayed_ack);
2242 case SCTP_TIMER_TYPE_SHUTDOWN:
2243 /* Here we use the RTO of the destination. */
2244 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2246 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2247 t_type, inp, stcb, net);
2252 tmr = &net->rxt_timer;
2253 if (net->RTO == 0) {
2254 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2256 to_ticks = sctp_msecs_to_ticks(net->RTO);
2259 case SCTP_TIMER_TYPE_HEARTBEAT:
2261 * The net is used here so that we can add in the RTO. Even
2262 * though we use a different timer. We also add the HB timer
2263 * PLUS a random jitter.
2265 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2267 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2268 t_type, inp, stcb, net);
2273 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2274 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2275 SCTPDBG(SCTP_DEBUG_TIMER2,
2276 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n",
2277 t_type, inp, stcb, net);
2280 tmr = &net->hb_timer;
2281 if (net->RTO == 0) {
2282 to_ticks = stcb->asoc.initial_rto;
2284 to_ticks = net->RTO;
2286 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2287 jitter = rndval % to_ticks;
2291 if (jitter < (UINT32_MAX - to_ticks)) {
2294 to_ticks = UINT32_MAX;
2296 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2297 !(net->dest_state & SCTP_ADDR_PF)) {
2298 if (net->heart_beat_delay < (UINT32_MAX - to_ticks)) {
2299 to_ticks += net->heart_beat_delay;
2301 to_ticks = UINT32_MAX;
2305 * Now we must convert the to_ticks that are now in ms to
2308 to_ticks = sctp_msecs_to_ticks(to_ticks);
2310 case SCTP_TIMER_TYPE_COOKIE:
2312 * Here we can use the RTO timer from the network since one
2313 * RTT was complete. If a retransmission happened then we
2314 * will be using the RTO initial value.
2316 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2318 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2319 t_type, inp, stcb, net);
2324 tmr = &net->rxt_timer;
2325 if (net->RTO == 0) {
2326 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2328 to_ticks = sctp_msecs_to_ticks(net->RTO);
2331 case SCTP_TIMER_TYPE_NEWCOOKIE:
2333 * Nothing needed but the endpoint here ususually about 60
2336 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2338 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2339 t_type, inp, stcb, net);
2344 tmr = &inp->sctp_ep.signature_change;
2345 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2347 case SCTP_TIMER_TYPE_PATHMTURAISE:
2349 * Here we use the value found in the EP for PMTUD,
2350 * ususually about 10 minutes.
2352 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2354 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2355 t_type, inp, stcb, net);
2360 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2361 SCTPDBG(SCTP_DEBUG_TIMER2,
2362 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n",
2363 t_type, inp, stcb, net);
2366 tmr = &net->pmtu_timer;
2367 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2369 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2370 /* Here we use the RTO of the destination. */
2371 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2373 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2374 t_type, inp, stcb, net);
2379 tmr = &net->rxt_timer;
2380 if (net->RTO == 0) {
2381 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2383 to_ticks = sctp_msecs_to_ticks(net->RTO);
2386 case SCTP_TIMER_TYPE_ASCONF:
2388 * Here the timer comes from the stcb but its value is from
2391 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2393 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2394 t_type, inp, stcb, net);
2399 tmr = &stcb->asoc.asconf_timer;
2400 if (net->RTO == 0) {
2401 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2403 to_ticks = sctp_msecs_to_ticks(net->RTO);
2406 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2408 * Here we use the endpoints shutdown guard timer usually
2411 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2413 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2414 t_type, inp, stcb, net);
2419 tmr = &stcb->asoc.shut_guard_timer;
2420 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2421 if (stcb->asoc.maxrto < UINT32_MAX / 5) {
2422 to_ticks = sctp_msecs_to_ticks(5 * stcb->asoc.maxrto);
2424 to_ticks = sctp_msecs_to_ticks(UINT32_MAX);
2427 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2430 case SCTP_TIMER_TYPE_AUTOCLOSE:
2431 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2433 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2434 t_type, inp, stcb, net);
2439 tmr = &stcb->asoc.autoclose_timer;
2440 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2442 case SCTP_TIMER_TYPE_STRRESET:
2444 * Here the timer comes from the stcb but its value is from
2447 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2449 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2450 t_type, inp, stcb, net);
2455 tmr = &stcb->asoc.strreset_timer;
2456 if (net->RTO == 0) {
2457 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2459 to_ticks = sctp_msecs_to_ticks(net->RTO);
2462 case SCTP_TIMER_TYPE_INPKILL:
2464 * The inp is setup to die. We re-use the signature_chage
2465 * timer since that has stopped and we are in the GONE
2468 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2470 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2471 t_type, inp, stcb, net);
2476 tmr = &inp->sctp_ep.signature_change;
2477 to_ticks = sctp_msecs_to_ticks(SCTP_INP_KILL_TIMEOUT);
2479 case SCTP_TIMER_TYPE_ASOCKILL:
2480 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2482 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2483 t_type, inp, stcb, net);
2488 tmr = &stcb->asoc.strreset_timer;
2489 to_ticks = sctp_msecs_to_ticks(SCTP_ASOC_KILL_TIMEOUT);
2491 case SCTP_TIMER_TYPE_ADDR_WQ:
2492 if ((inp != NULL) || (stcb != NULL) || (net != NULL)) {
2494 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2495 t_type, inp, stcb, net);
2500 /* Only 1 tick away :-) */
2501 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2502 to_ticks = SCTP_ADDRESS_TICK_DELAY;
2504 case SCTP_TIMER_TYPE_PRIM_DELETED:
2505 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2507 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2508 t_type, inp, stcb, net);
2513 tmr = &stcb->asoc.delete_prim_timer;
2514 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2518 panic("Unknown timer type %d", t_type);
2523 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type));
2524 KASSERT(to_ticks > 0, ("to_ticks == 0 for timer type %d", t_type));
2525 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2527 * We do NOT allow you to have it already running. If it is,
2528 * we leave the current one up unchanged.
2530 SCTPDBG(SCTP_DEBUG_TIMER2,
2531 "Timer type %d already running: inp=%p, stcb=%p, net=%p.\n",
2532 t_type, inp, stcb, net);
2535 /* At this point we can proceed. */
2536 if (t_type == SCTP_TIMER_TYPE_SEND) {
2537 stcb->asoc.num_send_timers_up++;
2539 tmr->stopped_from = 0;
2541 tmr->ep = (void *)inp;
2542 tmr->tcb = (void *)stcb;
2543 if (t_type == SCTP_TIMER_TYPE_STRRESET) {
2546 tmr->net = (void *)net;
2548 tmr->self = (void *)tmr;
2549 tmr->vnet = (void *)curvnet;
2550 tmr->ticks = sctp_get_tick_count();
2551 if (SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr) == 0) {
2552 SCTPDBG(SCTP_DEBUG_TIMER2,
2553 "Timer type %d started: ticks=%u, inp=%p, stcb=%p, net=%p.\n",
2554 t_type, to_ticks, inp, stcb, net);
2556 * If this is a newly scheduled callout, as opposed to a
2557 * rescheduled one, increment relevant reference counts.
2559 if (tmr->ep != NULL) {
2560 SCTP_INP_INCR_REF(inp);
2562 if (tmr->tcb != NULL) {
2563 atomic_add_int(&stcb->asoc.refcnt, 1);
2565 if (tmr->net != NULL) {
2566 atomic_add_int(&net->ref_count, 1);
2570 * This should not happen, since we checked for pending
2573 SCTPDBG(SCTP_DEBUG_TIMER2,
2574 "Timer type %d restarted: ticks=%u, inp=%p, stcb=%p, net=%p.\n",
2575 t_type, to_ticks, inp, stcb, net);
2581 * The following table shows which parameters must be provided
2582 * when calling sctp_timer_stop(). For parameters not being
2583 * provided, NULL must be used.
2585 * |Name |inp |stcb|net |
2586 * |-----------------------------|----|----|----|
2587 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes |
2588 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes |
2589 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No |
2590 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes |
2591 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes |
2592 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes |
2593 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No |
2594 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes |
2595 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes |
2596 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |No |
2597 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No |
2598 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No |
2599 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |No |
2600 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No |
2601 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No |
2602 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No |
2603 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No |
2608 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2609 struct sctp_nets *net, uint32_t from)
2611 struct sctp_timer *tmr;
2613 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
2614 ("sctp_timer_stop of type %d: inp = %p, stcb->sctp_ep %p",
2615 t_type, stcb, stcb->sctp_ep));
2617 SCTP_TCB_LOCK_ASSERT(stcb);
2618 } else if (inp != NULL) {
2619 SCTP_INP_WLOCK_ASSERT(inp);
2621 SCTP_WQ_ADDR_LOCK_ASSERT();
2625 case SCTP_TIMER_TYPE_SEND:
2626 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2628 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2629 t_type, inp, stcb, net);
2634 tmr = &net->rxt_timer;
2636 case SCTP_TIMER_TYPE_INIT:
2637 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2639 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2640 t_type, inp, stcb, net);
2645 tmr = &net->rxt_timer;
2647 case SCTP_TIMER_TYPE_RECV:
2648 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2650 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2651 t_type, inp, stcb, net);
2656 tmr = &stcb->asoc.dack_timer;
2658 case SCTP_TIMER_TYPE_SHUTDOWN:
2659 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2661 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2662 t_type, inp, stcb, net);
2667 tmr = &net->rxt_timer;
2669 case SCTP_TIMER_TYPE_HEARTBEAT:
2670 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2672 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2673 t_type, inp, stcb, net);
2678 tmr = &net->hb_timer;
2680 case SCTP_TIMER_TYPE_COOKIE:
2681 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2683 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2684 t_type, inp, stcb, net);
2689 tmr = &net->rxt_timer;
2691 case SCTP_TIMER_TYPE_NEWCOOKIE:
2692 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2694 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2695 t_type, inp, stcb, net);
2700 tmr = &inp->sctp_ep.signature_change;
2702 case SCTP_TIMER_TYPE_PATHMTURAISE:
2703 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2705 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2706 t_type, inp, stcb, net);
2711 tmr = &net->pmtu_timer;
2713 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2714 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2716 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2717 t_type, inp, stcb, net);
2722 tmr = &net->rxt_timer;
2724 case SCTP_TIMER_TYPE_ASCONF:
2725 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2727 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2728 t_type, inp, stcb, net);
2733 tmr = &stcb->asoc.asconf_timer;
2735 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2736 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2738 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2739 t_type, inp, stcb, net);
2744 tmr = &stcb->asoc.shut_guard_timer;
2746 case SCTP_TIMER_TYPE_AUTOCLOSE:
2747 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2749 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2750 t_type, inp, stcb, net);
2755 tmr = &stcb->asoc.autoclose_timer;
2757 case SCTP_TIMER_TYPE_STRRESET:
2758 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2760 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2761 t_type, inp, stcb, net);
2766 tmr = &stcb->asoc.strreset_timer;
2768 case SCTP_TIMER_TYPE_INPKILL:
2770 * The inp is setup to die. We re-use the signature_chage
2771 * timer since that has stopped and we are in the GONE
2774 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2776 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2777 t_type, inp, stcb, net);
2782 tmr = &inp->sctp_ep.signature_change;
2784 case SCTP_TIMER_TYPE_ASOCKILL:
2785 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2787 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2788 t_type, inp, stcb, net);
2793 tmr = &stcb->asoc.strreset_timer;
2795 case SCTP_TIMER_TYPE_ADDR_WQ:
2796 if ((inp != NULL) || (stcb != NULL) || (net != NULL)) {
2798 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2799 t_type, inp, stcb, net);
2804 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2806 case SCTP_TIMER_TYPE_PRIM_DELETED:
2807 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2809 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2810 t_type, inp, stcb, net);
2815 tmr = &stcb->asoc.delete_prim_timer;
2819 panic("Unknown timer type %d", t_type);
2824 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type));
2825 if ((tmr->type != SCTP_TIMER_TYPE_NONE) &&
2826 (tmr->type != t_type)) {
2828 * Ok we have a timer that is under joint use. Cookie timer
2829 * per chance with the SEND timer. We therefore are NOT
2830 * running the timer that the caller wants stopped. So just
2833 SCTPDBG(SCTP_DEBUG_TIMER2,
2834 "Shared timer type %d not running: inp=%p, stcb=%p, net=%p.\n",
2835 t_type, inp, stcb, net);
2838 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2839 stcb->asoc.num_send_timers_up--;
2840 if (stcb->asoc.num_send_timers_up < 0) {
2841 stcb->asoc.num_send_timers_up = 0;
2845 tmr->stopped_from = from;
2846 if (SCTP_OS_TIMER_STOP(&tmr->timer) == 1) {
2847 KASSERT(tmr->ep == inp,
2848 ("sctp_timer_stop of type %d: inp = %p, tmr->inp = %p",
2849 t_type, inp, tmr->ep));
2850 KASSERT(tmr->tcb == stcb,
2851 ("sctp_timer_stop of type %d: stcb = %p, tmr->stcb = %p",
2852 t_type, stcb, tmr->tcb));
2853 KASSERT(((t_type == SCTP_TIMER_TYPE_ASCONF) && (tmr->net != NULL)) ||
2854 ((t_type != SCTP_TIMER_TYPE_ASCONF) && (tmr->net == net)),
2855 ("sctp_timer_stop of type %d: net = %p, tmr->net = %p",
2856 t_type, net, tmr->net));
2857 SCTPDBG(SCTP_DEBUG_TIMER2,
2858 "Timer type %d stopped: inp=%p, stcb=%p, net=%p.\n",
2859 t_type, inp, stcb, net);
2861 * If the timer was actually stopped, decrement reference
2862 * counts that were incremented in sctp_timer_start().
2864 if (tmr->ep != NULL) {
2865 SCTP_INP_DECR_REF(inp);
2868 if (tmr->tcb != NULL) {
2869 atomic_add_int(&stcb->asoc.refcnt, -1);
2872 if (tmr->net != NULL) {
2874 * Can't use net, since it doesn't work for
2875 * SCTP_TIMER_TYPE_ASCONF.
2877 sctp_free_remote_addr((struct sctp_nets *)tmr->net);
2881 SCTPDBG(SCTP_DEBUG_TIMER2,
2882 "Timer type %d not stopped: inp=%p, stcb=%p, net=%p.\n",
2883 t_type, inp, stcb, net);
2889 sctp_calculate_len(struct mbuf *m)
2896 tlen += SCTP_BUF_LEN(at);
2897 at = SCTP_BUF_NEXT(at);
2903 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2904 struct sctp_association *asoc, uint32_t mtu)
2907 * Reset the P-MTU size on this association, this involves changing
2908 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2909 * allow the DF flag to be cleared.
2911 struct sctp_tmit_chunk *chk;
2912 unsigned int eff_mtu, ovh;
2914 asoc->smallest_mtu = mtu;
2915 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2916 ovh = SCTP_MIN_OVERHEAD;
2918 ovh = SCTP_MIN_V4_OVERHEAD;
2920 eff_mtu = mtu - ovh;
2921 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2922 if (chk->send_size > eff_mtu) {
2923 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2926 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2927 if (chk->send_size > eff_mtu) {
2928 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2934 * Given an association and starting time of the current RTT period, update
2935 * RTO in number of msecs. net should point to the current network.
2936 * Return 1, if an RTO update was performed, return 0 if no update was
2937 * performed due to invalid starting point.
2941 sctp_calculate_rto(struct sctp_tcb *stcb,
2942 struct sctp_association *asoc,
2943 struct sctp_nets *net,
2944 struct timeval *old,
2948 uint64_t rtt_us; /* RTT in us */
2949 int32_t rtt; /* RTT in ms */
2951 int first_measure = 0;
2953 /************************/
2954 /* 1. calculate new RTT */
2955 /************************/
2956 /* get the current time */
2957 if (stcb->asoc.use_precise_time) {
2958 (void)SCTP_GETPTIME_TIMEVAL(&now);
2960 (void)SCTP_GETTIME_TIMEVAL(&now);
2962 if ((old->tv_sec > now.tv_sec) ||
2963 ((old->tv_sec == now.tv_sec) && (old->tv_usec > now.tv_usec))) {
2964 /* The starting point is in the future. */
2967 timevalsub(&now, old);
2968 rtt_us = (uint64_t)1000000 * (uint64_t)now.tv_sec + (uint64_t)now.tv_usec;
2969 if (rtt_us > SCTP_RTO_UPPER_BOUND * 1000) {
2970 /* The RTT is larger than a sane value. */
2973 /* store the current RTT in us */
2975 /* compute rtt in ms */
2976 rtt = (int32_t)(net->rtt / 1000);
2977 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2979 * Tell the CC module that a new update has just occurred
2982 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2985 * Do we need to determine the lan? We do this only on sacks i.e.
2986 * RTT being determined from data not non-data (HB/INIT->INITACK).
2988 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2989 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2990 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2991 net->lan_type = SCTP_LAN_INTERNET;
2993 net->lan_type = SCTP_LAN_LOCAL;
2997 /***************************/
2998 /* 2. update RTTVAR & SRTT */
2999 /***************************/
3001 * Compute the scaled average lastsa and the
3002 * scaled variance lastsv as described in van Jacobson
3003 * Paper "Congestion Avoidance and Control", Annex A.
3005 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
3006 * (net->lastsv >> SCTP_RTT_VAR_SHIFT) is the rttvar
3008 if (net->RTO_measured) {
3009 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
3014 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
3016 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
3017 rto_logging(net, SCTP_LOG_RTTVAR);
3020 /* First RTO measurment */
3021 net->RTO_measured = 1;
3023 net->lastsa = rtt << SCTP_RTT_SHIFT;
3024 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
3025 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
3026 rto_logging(net, SCTP_LOG_INITIAL_RTT);
3029 if (net->lastsv == 0) {
3030 net->lastsv = SCTP_CLOCK_GRANULARITY;
3032 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
3033 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
3034 (stcb->asoc.sat_network_lockout == 0)) {
3035 stcb->asoc.sat_network = 1;
3036 } else if ((!first_measure) && stcb->asoc.sat_network) {
3037 stcb->asoc.sat_network = 0;
3038 stcb->asoc.sat_network_lockout = 1;
3040 /* bound it, per C6/C7 in Section 5.3.1 */
3041 if (new_rto < stcb->asoc.minrto) {
3042 new_rto = stcb->asoc.minrto;
3044 if (new_rto > stcb->asoc.maxrto) {
3045 new_rto = stcb->asoc.maxrto;
3052 * return a pointer to a contiguous piece of data from the given mbuf chain
3053 * starting at 'off' for 'len' bytes. If the desired piece spans more than
3054 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
3055 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
3058 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t *in_ptr)
3064 if ((off < 0) || (len <= 0))
3067 /* find the desired start location */
3068 while ((m != NULL) && (off > 0)) {
3069 if (off < SCTP_BUF_LEN(m))
3071 off -= SCTP_BUF_LEN(m);
3072 m = SCTP_BUF_NEXT(m);
3077 /* is the current mbuf large enough (eg. contiguous)? */
3078 if ((SCTP_BUF_LEN(m) - off) >= len) {
3079 return (mtod(m, caddr_t)+off);
3081 /* else, it spans more than one mbuf, so save a temp copy... */
3082 while ((m != NULL) && (len > 0)) {
3083 count = min(SCTP_BUF_LEN(m) - off, len);
3084 memcpy(ptr, mtod(m, caddr_t)+off, count);
3088 m = SCTP_BUF_NEXT(m);
3090 if ((m == NULL) && (len > 0))
3093 return ((caddr_t)in_ptr);
3097 struct sctp_paramhdr *
3098 sctp_get_next_param(struct mbuf *m,
3100 struct sctp_paramhdr *pull,
3103 /* This just provides a typed signature to Peter's Pull routine */
3104 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
3109 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
3111 struct mbuf *m_last;
3117 if (padlen <= M_TRAILINGSPACE(m)) {
3119 * The easy way. We hope the majority of the time we hit
3124 /* Hard way we must grow the mbuf chain */
3125 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
3126 if (m_last == NULL) {
3129 SCTP_BUF_LEN(m_last) = 0;
3130 SCTP_BUF_NEXT(m_last) = NULL;
3131 SCTP_BUF_NEXT(m) = m_last;
3133 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
3134 SCTP_BUF_LEN(m_last) += padlen;
3135 memset(dp, 0, padlen);
3140 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
3142 /* find the last mbuf in chain and pad it */
3145 if (last_mbuf != NULL) {
3146 return (sctp_add_pad_tombuf(last_mbuf, padval));
3148 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
3149 if (SCTP_BUF_NEXT(m_at) == NULL) {
3150 return (sctp_add_pad_tombuf(m_at, padval));
3158 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
3159 uint16_t error, struct sctp_abort_chunk *abort,
3160 bool from_peer, bool timedout, int so_locked)
3162 struct mbuf *m_notify;
3163 struct sctp_assoc_change *sac;
3164 struct sctp_queued_to_read *control;
3165 unsigned int notif_len;
3169 KASSERT(abort == NULL || from_peer,
3170 ("sctp_notify_assoc_change: ABORT chunk provided for local termination"));
3171 KASSERT(!from_peer || !timedout,
3172 ("sctp_notify_assoc_change: timeouts can only be local"));
3176 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
3177 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
3178 if (abort != NULL) {
3179 abort_len = ntohs(abort->ch.chunk_length);
3181 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
3184 if (abort_len > SCTP_CHUNK_BUFFER_SIZE) {
3185 abort_len = SCTP_CHUNK_BUFFER_SIZE;
3190 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
3191 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
3192 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
3193 notif_len += abort_len;
3195 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3196 if (m_notify == NULL) {
3197 /* Retry with smaller value. */
3198 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
3199 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3200 if (m_notify == NULL) {
3204 SCTP_BUF_NEXT(m_notify) = NULL;
3205 sac = mtod(m_notify, struct sctp_assoc_change *);
3206 memset(sac, 0, notif_len);
3207 sac->sac_type = SCTP_ASSOC_CHANGE;
3209 sac->sac_length = sizeof(struct sctp_assoc_change);
3210 sac->sac_state = state;
3211 sac->sac_error = error;
3212 if (state == SCTP_CANT_STR_ASSOC) {
3213 sac->sac_outbound_streams = 0;
3214 sac->sac_inbound_streams = 0;
3216 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
3217 sac->sac_inbound_streams = stcb->asoc.streamincnt;
3219 sac->sac_assoc_id = sctp_get_associd(stcb);
3220 if (notif_len > sizeof(struct sctp_assoc_change)) {
3221 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
3223 if (stcb->asoc.prsctp_supported == 1) {
3224 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
3226 if (stcb->asoc.auth_supported == 1) {
3227 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
3229 if (stcb->asoc.asconf_supported == 1) {
3230 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
3232 if (stcb->asoc.idata_supported == 1) {
3233 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
3235 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
3236 if (stcb->asoc.reconfig_supported == 1) {
3237 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
3239 sac->sac_length += i;
3240 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
3241 memcpy(sac->sac_info, abort, abort_len);
3242 sac->sac_length += abort_len;
3245 SCTP_BUF_LEN(m_notify) = sac->sac_length;
3246 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3247 0, 0, stcb->asoc.context, 0, 0, 0,
3249 if (control != NULL) {
3250 control->length = SCTP_BUF_LEN(m_notify);
3251 control->spec_flags = M_NOTIFICATION;
3252 /* not that we need this */
3253 control->tail_mbuf = m_notify;
3254 sctp_add_to_readq(stcb->sctp_ep, stcb,
3256 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
3259 sctp_m_freem(m_notify);
3263 * For 1-to-1 style sockets, we send up and error when an ABORT
3267 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3268 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
3269 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
3270 SOCK_LOCK(stcb->sctp_socket);
3272 if (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) {
3273 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
3274 stcb->sctp_socket->so_error = ECONNREFUSED;
3276 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
3277 stcb->sctp_socket->so_error = ECONNRESET;
3281 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
3282 stcb->sctp_socket->so_error = ETIMEDOUT;
3284 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
3285 stcb->sctp_socket->so_error = ECONNABORTED;
3288 SOCK_UNLOCK(stcb->sctp_socket);
3290 /* Wake ANY sleepers */
3291 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3292 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
3293 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
3294 socantrcvmore(stcb->sctp_socket);
3296 sorwakeup(stcb->sctp_socket);
3297 sowwakeup(stcb->sctp_socket);
3301 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
3302 struct sockaddr *sa, uint32_t error, int so_locked)
3304 struct mbuf *m_notify;
3305 struct sctp_paddr_change *spc;
3306 struct sctp_queued_to_read *control;
3308 if ((stcb == NULL) ||
3309 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
3310 /* event not enabled */
3313 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
3314 if (m_notify == NULL)
3316 SCTP_BUF_LEN(m_notify) = 0;
3317 spc = mtod(m_notify, struct sctp_paddr_change *);
3318 memset(spc, 0, sizeof(struct sctp_paddr_change));
3319 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
3321 spc->spc_length = sizeof(struct sctp_paddr_change);
3322 switch (sa->sa_family) {
3326 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
3327 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
3328 (struct sockaddr_in6 *)&spc->spc_aaddr);
3330 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
3333 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
3340 struct sockaddr_in6 *sin6;
3342 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
3344 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
3345 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
3346 if (sin6->sin6_scope_id == 0) {
3347 /* recover scope_id for user */
3348 (void)sa6_recoverscope(sin6);
3350 /* clear embedded scope_id for user */
3351 in6_clearscope(&sin6->sin6_addr);
3361 spc->spc_state = state;
3362 spc->spc_error = error;
3363 spc->spc_assoc_id = sctp_get_associd(stcb);
3365 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
3366 SCTP_BUF_NEXT(m_notify) = NULL;
3368 /* append to socket */
3369 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3370 0, 0, stcb->asoc.context, 0, 0, 0,
3372 if (control == NULL) {
3374 sctp_m_freem(m_notify);
3377 control->length = SCTP_BUF_LEN(m_notify);
3378 control->spec_flags = M_NOTIFICATION;
3379 /* not that we need this */
3380 control->tail_mbuf = m_notify;
3381 sctp_add_to_readq(stcb->sctp_ep, stcb,
3383 &stcb->sctp_socket->so_rcv, 1,
3384 SCTP_READ_LOCK_NOT_HELD,
3389 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
3390 struct sctp_tmit_chunk *chk, int so_locked)
3392 struct mbuf *m_notify;
3393 struct sctp_send_failed *ssf;
3394 struct sctp_send_failed_event *ssfe;
3395 struct sctp_queued_to_read *control;
3396 struct sctp_chunkhdr *chkhdr;
3397 int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len;
3399 if ((stcb == NULL) ||
3400 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3401 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3402 /* event not enabled */
3406 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3407 notifhdr_len = sizeof(struct sctp_send_failed_event);
3409 notifhdr_len = sizeof(struct sctp_send_failed);
3411 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3412 if (m_notify == NULL)
3415 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3416 if (stcb->asoc.idata_supported) {
3417 chkhdr_len = sizeof(struct sctp_idata_chunk);
3419 chkhdr_len = sizeof(struct sctp_data_chunk);
3421 /* Use some defaults in case we can't access the chunk header */
3422 if (chk->send_size >= chkhdr_len) {
3423 payload_len = chk->send_size - chkhdr_len;
3428 if (chk->data != NULL) {
3429 chkhdr = mtod(chk->data, struct sctp_chunkhdr *);
3430 if (chkhdr != NULL) {
3431 chk_len = ntohs(chkhdr->chunk_length);
3432 if ((chk_len >= chkhdr_len) &&
3433 (chk->send_size >= chk_len) &&
3434 (chk->send_size - chk_len < 4)) {
3435 padding_len = chk->send_size - chk_len;
3436 payload_len = chk->send_size - chkhdr_len - padding_len;
3440 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3441 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3442 memset(ssfe, 0, notifhdr_len);
3443 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3445 ssfe->ssfe_flags = SCTP_DATA_SENT;
3447 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3449 ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len);
3450 ssfe->ssfe_error = error;
3451 /* not exactly what the user sent in, but should be close :) */
3452 ssfe->ssfe_info.snd_sid = chk->rec.data.sid;
3453 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
3454 ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid;
3455 ssfe->ssfe_info.snd_context = chk->rec.data.context;
3456 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3457 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3459 ssf = mtod(m_notify, struct sctp_send_failed *);
3460 memset(ssf, 0, notifhdr_len);
3461 ssf->ssf_type = SCTP_SEND_FAILED;
3463 ssf->ssf_flags = SCTP_DATA_SENT;
3465 ssf->ssf_flags = SCTP_DATA_UNSENT;
3467 ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len);
3468 ssf->ssf_error = error;
3469 /* not exactly what the user sent in, but should be close :) */
3470 ssf->ssf_info.sinfo_stream = chk->rec.data.sid;
3471 ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid;
3472 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
3473 ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid;
3474 ssf->ssf_info.sinfo_context = chk->rec.data.context;
3475 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3476 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3478 if (chk->data != NULL) {
3479 /* Trim off the sctp chunk header (it should be there) */
3480 if (chk->send_size == chkhdr_len + payload_len + padding_len) {
3481 m_adj(chk->data, chkhdr_len);
3482 m_adj(chk->data, -padding_len);
3483 sctp_mbuf_crush(chk->data);
3484 chk->send_size -= (chkhdr_len + padding_len);
3487 SCTP_BUF_NEXT(m_notify) = chk->data;
3488 /* Steal off the mbuf */
3491 * For this case, we check the actual socket buffer, since the assoc
3492 * is going away we don't want to overfill the socket buffer for a
3495 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3496 sctp_m_freem(m_notify);
3499 /* append to socket */
3500 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3501 0, 0, stcb->asoc.context, 0, 0, 0,
3503 if (control == NULL) {
3505 sctp_m_freem(m_notify);
3508 control->length = SCTP_BUF_LEN(m_notify);
3509 control->spec_flags = M_NOTIFICATION;
3510 /* not that we need this */
3511 control->tail_mbuf = m_notify;
3512 sctp_add_to_readq(stcb->sctp_ep, stcb,
3514 &stcb->sctp_socket->so_rcv, 1,
3515 SCTP_READ_LOCK_NOT_HELD,
3520 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3521 struct sctp_stream_queue_pending *sp, int so_locked)
3523 struct mbuf *m_notify;
3524 struct sctp_send_failed *ssf;
3525 struct sctp_send_failed_event *ssfe;
3526 struct sctp_queued_to_read *control;
3529 if ((stcb == NULL) ||
3530 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3531 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3532 /* event not enabled */
3535 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3536 notifhdr_len = sizeof(struct sctp_send_failed_event);
3538 notifhdr_len = sizeof(struct sctp_send_failed);
3540 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3541 if (m_notify == NULL) {
3545 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3546 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3547 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3548 memset(ssfe, 0, notifhdr_len);
3549 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3550 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3551 ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length);
3552 ssfe->ssfe_error = error;
3553 /* not exactly what the user sent in, but should be close :) */
3554 ssfe->ssfe_info.snd_sid = sp->sid;
3555 if (sp->some_taken) {
3556 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3558 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3560 ssfe->ssfe_info.snd_ppid = sp->ppid;
3561 ssfe->ssfe_info.snd_context = sp->context;
3562 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3563 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3565 ssf = mtod(m_notify, struct sctp_send_failed *);
3566 memset(ssf, 0, notifhdr_len);
3567 ssf->ssf_type = SCTP_SEND_FAILED;
3568 ssf->ssf_flags = SCTP_DATA_UNSENT;
3569 ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length);
3570 ssf->ssf_error = error;
3571 /* not exactly what the user sent in, but should be close :) */
3572 ssf->ssf_info.sinfo_stream = sp->sid;
3573 ssf->ssf_info.sinfo_ssn = 0;
3574 if (sp->some_taken) {
3575 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3577 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3579 ssf->ssf_info.sinfo_ppid = sp->ppid;
3580 ssf->ssf_info.sinfo_context = sp->context;
3581 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3582 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3584 SCTP_BUF_NEXT(m_notify) = sp->data;
3586 /* Steal off the mbuf */
3589 * For this case, we check the actual socket buffer, since the assoc
3590 * is going away we don't want to overfill the socket buffer for a
3593 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3594 sctp_m_freem(m_notify);
3597 /* append to socket */
3598 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3599 0, 0, stcb->asoc.context, 0, 0, 0,
3601 if (control == NULL) {
3603 sctp_m_freem(m_notify);
3606 control->length = SCTP_BUF_LEN(m_notify);
3607 control->spec_flags = M_NOTIFICATION;
3608 /* not that we need this */
3609 control->tail_mbuf = m_notify;
3610 sctp_add_to_readq(stcb->sctp_ep, stcb,
3612 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3616 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3618 struct mbuf *m_notify;
3619 struct sctp_adaptation_event *sai;
3620 struct sctp_queued_to_read *control;
3622 if ((stcb == NULL) ||
3623 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3624 /* event not enabled */
3628 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3629 if (m_notify == NULL)
3632 SCTP_BUF_LEN(m_notify) = 0;
3633 sai = mtod(m_notify, struct sctp_adaptation_event *);
3634 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3635 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3637 sai->sai_length = sizeof(struct sctp_adaptation_event);
3638 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3639 sai->sai_assoc_id = sctp_get_associd(stcb);
3641 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3642 SCTP_BUF_NEXT(m_notify) = NULL;
3644 /* append to socket */
3645 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3646 0, 0, stcb->asoc.context, 0, 0, 0,
3648 if (control == NULL) {
3650 sctp_m_freem(m_notify);
3653 control->length = SCTP_BUF_LEN(m_notify);
3654 control->spec_flags = M_NOTIFICATION;
3655 /* not that we need this */
3656 control->tail_mbuf = m_notify;
3657 sctp_add_to_readq(stcb->sctp_ep, stcb,
3659 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3662 /* This always must be called with the read-queue LOCKED in the INP */
3664 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3665 uint32_t val, int so_locked)
3667 struct mbuf *m_notify;
3668 struct sctp_pdapi_event *pdapi;
3669 struct sctp_queued_to_read *control;
3672 if ((stcb == NULL) ||
3673 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3674 /* event not enabled */
3677 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3681 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3682 if (m_notify == NULL)
3685 SCTP_BUF_LEN(m_notify) = 0;
3686 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3687 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3688 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3689 pdapi->pdapi_flags = 0;
3690 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3691 pdapi->pdapi_indication = error;
3692 pdapi->pdapi_stream = (val >> 16);
3693 pdapi->pdapi_seq = (val & 0x0000ffff);
3694 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3696 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3697 SCTP_BUF_NEXT(m_notify) = NULL;
3698 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3699 0, 0, stcb->asoc.context, 0, 0, 0,
3701 if (control == NULL) {
3703 sctp_m_freem(m_notify);
3706 control->length = SCTP_BUF_LEN(m_notify);
3707 control->spec_flags = M_NOTIFICATION;
3708 /* not that we need this */
3709 control->tail_mbuf = m_notify;
3710 sb = &stcb->sctp_socket->so_rcv;
3711 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3712 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3714 sctp_sballoc(stcb, sb, m_notify);
3715 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3716 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3718 control->end_added = 1;
3719 if (stcb->asoc.control_pdapi)
3720 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3722 /* we really should not see this case */
3723 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3725 if (stcb->sctp_ep && stcb->sctp_socket) {
3726 /* This should always be the case */
3727 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3732 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3734 struct mbuf *m_notify;
3735 struct sctp_shutdown_event *sse;
3736 struct sctp_queued_to_read *control;
3739 * For TCP model AND UDP connected sockets we will send an error up
3740 * when an SHUTDOWN completes
3742 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3743 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3744 /* mark socket closed for read/write and wakeup! */
3745 socantsendmore(stcb->sctp_socket);
3747 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3748 /* event not enabled */
3752 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3753 if (m_notify == NULL)
3756 sse = mtod(m_notify, struct sctp_shutdown_event *);
3757 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3758 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3760 sse->sse_length = sizeof(struct sctp_shutdown_event);
3761 sse->sse_assoc_id = sctp_get_associd(stcb);
3763 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3764 SCTP_BUF_NEXT(m_notify) = NULL;
3766 /* append to socket */
3767 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3768 0, 0, stcb->asoc.context, 0, 0, 0,
3770 if (control == NULL) {
3772 sctp_m_freem(m_notify);
3775 control->length = SCTP_BUF_LEN(m_notify);
3776 control->spec_flags = M_NOTIFICATION;
3777 /* not that we need this */
3778 control->tail_mbuf = m_notify;
3779 sctp_add_to_readq(stcb->sctp_ep, stcb,
3781 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3785 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3788 struct mbuf *m_notify;
3789 struct sctp_sender_dry_event *event;
3790 struct sctp_queued_to_read *control;
3792 if ((stcb == NULL) ||
3793 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3794 /* event not enabled */
3798 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3799 if (m_notify == NULL) {
3803 SCTP_BUF_LEN(m_notify) = 0;
3804 event = mtod(m_notify, struct sctp_sender_dry_event *);
3805 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3806 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3807 event->sender_dry_flags = 0;
3808 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3809 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3811 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3812 SCTP_BUF_NEXT(m_notify) = NULL;
3814 /* append to socket */
3815 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3816 0, 0, stcb->asoc.context, 0, 0, 0,
3818 if (control == NULL) {
3820 sctp_m_freem(m_notify);
3823 control->length = SCTP_BUF_LEN(m_notify);
3824 control->spec_flags = M_NOTIFICATION;
3825 /* not that we need this */
3826 control->tail_mbuf = m_notify;
3827 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3828 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3832 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3834 struct mbuf *m_notify;
3835 struct sctp_queued_to_read *control;
3836 struct sctp_stream_change_event *stradd;
3838 if ((stcb == NULL) ||
3839 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3840 /* event not enabled */
3843 if ((stcb->asoc.peer_req_out) && flag) {
3844 /* Peer made the request, don't tell the local user */
3845 stcb->asoc.peer_req_out = 0;
3848 stcb->asoc.peer_req_out = 0;
3849 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3850 if (m_notify == NULL)
3853 SCTP_BUF_LEN(m_notify) = 0;
3854 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3855 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3856 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3857 stradd->strchange_flags = flag;
3858 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3859 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3860 stradd->strchange_instrms = numberin;
3861 stradd->strchange_outstrms = numberout;
3862 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3863 SCTP_BUF_NEXT(m_notify) = NULL;
3864 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3866 sctp_m_freem(m_notify);
3869 /* append to socket */
3870 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3871 0, 0, stcb->asoc.context, 0, 0, 0,
3873 if (control == NULL) {
3875 sctp_m_freem(m_notify);
3878 control->length = SCTP_BUF_LEN(m_notify);
3879 control->spec_flags = M_NOTIFICATION;
3880 /* not that we need this */
3881 control->tail_mbuf = m_notify;
3882 sctp_add_to_readq(stcb->sctp_ep, stcb,
3884 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3888 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3890 struct mbuf *m_notify;
3891 struct sctp_queued_to_read *control;
3892 struct sctp_assoc_reset_event *strasoc;
3894 if ((stcb == NULL) ||
3895 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3896 /* event not enabled */
3899 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3900 if (m_notify == NULL)
3903 SCTP_BUF_LEN(m_notify) = 0;
3904 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3905 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3906 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3907 strasoc->assocreset_flags = flag;
3908 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3909 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3910 strasoc->assocreset_local_tsn = sending_tsn;
3911 strasoc->assocreset_remote_tsn = recv_tsn;
3912 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3913 SCTP_BUF_NEXT(m_notify) = NULL;
3914 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3916 sctp_m_freem(m_notify);
3919 /* append to socket */
3920 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3921 0, 0, stcb->asoc.context, 0, 0, 0,
3923 if (control == NULL) {
3925 sctp_m_freem(m_notify);
3928 control->length = SCTP_BUF_LEN(m_notify);
3929 control->spec_flags = M_NOTIFICATION;
3930 /* not that we need this */
3931 control->tail_mbuf = m_notify;
3932 sctp_add_to_readq(stcb->sctp_ep, stcb,
3934 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3938 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3939 int number_entries, uint16_t *list, int flag)
3941 struct mbuf *m_notify;
3942 struct sctp_queued_to_read *control;
3943 struct sctp_stream_reset_event *strreset;
3946 if ((stcb == NULL) ||
3947 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3948 /* event not enabled */
3952 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3953 if (m_notify == NULL)
3956 SCTP_BUF_LEN(m_notify) = 0;
3957 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3958 if (len > M_TRAILINGSPACE(m_notify)) {
3959 /* never enough room */
3960 sctp_m_freem(m_notify);
3963 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3964 memset(strreset, 0, len);
3965 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3966 strreset->strreset_flags = flag;
3967 strreset->strreset_length = len;
3968 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3969 if (number_entries) {
3972 for (i = 0; i < number_entries; i++) {
3973 strreset->strreset_stream_list[i] = ntohs(list[i]);
3976 SCTP_BUF_LEN(m_notify) = len;
3977 SCTP_BUF_NEXT(m_notify) = NULL;
3978 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3980 sctp_m_freem(m_notify);
3983 /* append to socket */
3984 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3985 0, 0, stcb->asoc.context, 0, 0, 0,
3987 if (control == NULL) {
3989 sctp_m_freem(m_notify);
3992 control->length = SCTP_BUF_LEN(m_notify);
3993 control->spec_flags = M_NOTIFICATION;
3994 /* not that we need this */
3995 control->tail_mbuf = m_notify;
3996 sctp_add_to_readq(stcb->sctp_ep, stcb,
3998 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
4002 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
4004 struct mbuf *m_notify;
4005 struct sctp_remote_error *sre;
4006 struct sctp_queued_to_read *control;
4007 unsigned int notif_len;
4010 if ((stcb == NULL) ||
4011 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
4014 if (chunk != NULL) {
4015 chunk_len = ntohs(chunk->ch.chunk_length);
4017 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
4020 if (chunk_len > SCTP_CHUNK_BUFFER_SIZE) {
4021 chunk_len = SCTP_CHUNK_BUFFER_SIZE;
4026 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
4027 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
4028 if (m_notify == NULL) {
4029 /* Retry with smaller value. */
4030 notif_len = (unsigned int)sizeof(struct sctp_remote_error);
4031 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
4032 if (m_notify == NULL) {
4036 SCTP_BUF_NEXT(m_notify) = NULL;
4037 sre = mtod(m_notify, struct sctp_remote_error *);
4038 memset(sre, 0, notif_len);
4039 sre->sre_type = SCTP_REMOTE_ERROR;
4041 sre->sre_length = sizeof(struct sctp_remote_error);
4042 sre->sre_error = error;
4043 sre->sre_assoc_id = sctp_get_associd(stcb);
4044 if (notif_len > sizeof(struct sctp_remote_error)) {
4045 memcpy(sre->sre_data, chunk, chunk_len);
4046 sre->sre_length += chunk_len;
4048 SCTP_BUF_LEN(m_notify) = sre->sre_length;
4049 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
4050 0, 0, stcb->asoc.context, 0, 0, 0,
4052 if (control != NULL) {
4053 control->length = SCTP_BUF_LEN(m_notify);
4054 control->spec_flags = M_NOTIFICATION;
4055 /* not that we need this */
4056 control->tail_mbuf = m_notify;
4057 sctp_add_to_readq(stcb->sctp_ep, stcb,
4059 &stcb->sctp_socket->so_rcv, 1,
4060 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
4062 sctp_m_freem(m_notify);
4067 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
4068 uint32_t error, void *data, int so_locked)
4070 if ((stcb == NULL) ||
4071 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4072 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4073 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
4074 /* If the socket is gone we are out of here */
4077 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
4080 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4081 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4082 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
4083 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
4084 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
4085 /* Don't report these in front states */
4089 switch (notification) {
4090 case SCTP_NOTIFY_ASSOC_UP:
4091 if (stcb->asoc.assoc_up_sent == 0) {
4092 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, false, false, so_locked);
4093 stcb->asoc.assoc_up_sent = 1;
4095 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
4096 sctp_notify_adaptation_layer(stcb);
4098 if (stcb->asoc.auth_supported == 0) {
4099 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
4103 case SCTP_NOTIFY_ASSOC_DOWN:
4104 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, false, false, so_locked);
4106 case SCTP_NOTIFY_INTERFACE_DOWN:
4108 struct sctp_nets *net;
4110 net = (struct sctp_nets *)data;
4111 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
4112 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4115 case SCTP_NOTIFY_INTERFACE_UP:
4117 struct sctp_nets *net;
4119 net = (struct sctp_nets *)data;
4120 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
4121 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4124 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
4126 struct sctp_nets *net;
4128 net = (struct sctp_nets *)data;
4129 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
4130 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4133 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
4134 sctp_notify_send_failed2(stcb, error,
4135 (struct sctp_stream_queue_pending *)data, so_locked);
4137 case SCTP_NOTIFY_SENT_DG_FAIL:
4138 sctp_notify_send_failed(stcb, 1, error,
4139 (struct sctp_tmit_chunk *)data, so_locked);
4141 case SCTP_NOTIFY_UNSENT_DG_FAIL:
4142 sctp_notify_send_failed(stcb, 0, error,
4143 (struct sctp_tmit_chunk *)data, so_locked);
4145 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
4149 val = *((uint32_t *)data);
4151 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
4154 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
4155 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4156 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4157 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, false, false, so_locked);
4159 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, false, false, so_locked);
4162 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
4163 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4164 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4165 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, true, false, so_locked);
4167 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, true, false, so_locked);
4170 case SCTP_NOTIFY_ASSOC_TIMEDOUT:
4171 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4172 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4173 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, false, true, so_locked);
4175 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, false, true, so_locked);
4178 case SCTP_NOTIFY_ASSOC_RESTART:
4179 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, false, false, so_locked);
4180 if (stcb->asoc.auth_supported == 0) {
4181 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
4185 case SCTP_NOTIFY_STR_RESET_SEND:
4186 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_OUTGOING_SSN);
4188 case SCTP_NOTIFY_STR_RESET_RECV:
4189 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_INCOMING);
4191 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
4192 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4193 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
4195 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
4196 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4197 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
4199 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
4200 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4201 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
4203 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
4204 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4205 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
4207 case SCTP_NOTIFY_ASCONF_ADD_IP:
4208 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
4211 case SCTP_NOTIFY_ASCONF_DELETE_IP:
4212 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
4215 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
4216 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
4219 case SCTP_NOTIFY_PEER_SHUTDOWN:
4220 sctp_notify_shutdown_event(stcb);
4222 case SCTP_NOTIFY_AUTH_NEW_KEY:
4223 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
4224 (uint16_t)(uintptr_t)data,
4227 case SCTP_NOTIFY_AUTH_FREE_KEY:
4228 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
4229 (uint16_t)(uintptr_t)data,
4232 case SCTP_NOTIFY_NO_PEER_AUTH:
4233 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
4234 (uint16_t)(uintptr_t)data,
4237 case SCTP_NOTIFY_SENDER_DRY:
4238 sctp_notify_sender_dry_event(stcb, so_locked);
4240 case SCTP_NOTIFY_REMOTE_ERROR:
4241 sctp_notify_remote_error(stcb, error, data);
4244 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
4245 __func__, notification, notification);
4251 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int so_locked)
4253 struct sctp_association *asoc;
4254 struct sctp_stream_out *outs;
4255 struct sctp_tmit_chunk *chk, *nchk;
4256 struct sctp_stream_queue_pending *sp, *nsp;
4263 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
4264 /* already being freed */
4267 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4268 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4269 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
4272 /* now through all the gunk freeing chunks */
4273 /* sent queue SHOULD be empty */
4274 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
4275 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4276 asoc->sent_queue_cnt--;
4277 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
4278 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
4279 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
4282 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
4286 if (chk->data != NULL) {
4287 sctp_free_bufspace(stcb, asoc, chk, 1);
4288 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
4289 error, chk, so_locked);
4291 sctp_m_freem(chk->data);
4295 sctp_free_a_chunk(stcb, chk, so_locked);
4296 /* sa_ignore FREED_MEMORY */
4298 /* pending send queue SHOULD be empty */
4299 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
4300 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4301 asoc->send_queue_cnt--;
4302 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
4303 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
4306 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
4309 if (chk->data != NULL) {
4310 sctp_free_bufspace(stcb, asoc, chk, 1);
4311 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
4312 error, chk, so_locked);
4314 sctp_m_freem(chk->data);
4318 sctp_free_a_chunk(stcb, chk, so_locked);
4319 /* sa_ignore FREED_MEMORY */
4321 for (i = 0; i < asoc->streamoutcnt; i++) {
4322 /* For each stream */
4323 outs = &asoc->strmout[i];
4324 /* clean up any sends there */
4325 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4326 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
4327 TAILQ_REMOVE(&outs->outqueue, sp, next);
4328 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp);
4329 sctp_free_spbufspace(stcb, asoc, sp);
4331 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4332 error, (void *)sp, so_locked);
4334 sctp_m_freem(sp->data);
4336 sp->tail_mbuf = NULL;
4341 sctp_free_remote_addr(sp->net);
4344 /* Free the chunk */
4345 sctp_free_a_strmoq(stcb, sp, so_locked);
4346 /* sa_ignore FREED_MEMORY */
4352 sctp_abort_notification(struct sctp_tcb *stcb, bool from_peer, bool timeout,
4353 uint16_t error, struct sctp_abort_chunk *abort,
4359 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4360 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4361 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4362 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
4364 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4365 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4366 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
4369 SCTP_TCB_SEND_LOCK(stcb);
4370 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_WAS_ABORTED);
4371 /* Tell them we lost the asoc */
4372 sctp_report_all_outbound(stcb, error, so_locked);
4373 SCTP_TCB_SEND_UNLOCK(stcb);
4375 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
4378 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_TIMEDOUT, stcb, error, abort, so_locked);
4380 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
4386 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4387 struct mbuf *m, int iphlen,
4388 struct sockaddr *src, struct sockaddr *dst,
4389 struct sctphdr *sh, struct mbuf *op_err,
4390 uint8_t mflowtype, uint32_t mflowid,
4391 uint32_t vrf_id, uint16_t port)
4393 struct sctp_gen_error_cause *cause;
4395 uint16_t cause_code;
4398 vtag = stcb->asoc.peer_vtag;
4399 vrf_id = stcb->asoc.vrf_id;
4400 if (op_err != NULL) {
4401 /* Read the cause code from the error cause. */
4402 cause = mtod(op_err, struct sctp_gen_error_cause *);
4403 cause_code = ntohs(cause->code);
4410 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
4411 mflowtype, mflowid, inp->fibnum,
4414 /* We have a TCB to abort, send notification too */
4415 sctp_abort_notification(stcb, false, false, cause_code, NULL, SCTP_SO_NOT_LOCKED);
4416 /* Ok, now lets free it */
4417 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4418 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
4419 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4420 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4422 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4423 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
4426 #ifdef SCTP_ASOCLOG_OF_TSNS
4428 sctp_print_out_track_log(struct sctp_tcb *stcb)
4433 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
4434 SCTP_PRINTF("IN bound TSN log-aaa\n");
4435 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4436 SCTP_PRINTF("None rcvd\n");
4439 if (stcb->asoc.tsn_in_wrapped) {
4440 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4441 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4442 stcb->asoc.in_tsnlog[i].tsn,
4443 stcb->asoc.in_tsnlog[i].strm,
4444 stcb->asoc.in_tsnlog[i].seq,
4445 stcb->asoc.in_tsnlog[i].flgs,
4446 stcb->asoc.in_tsnlog[i].sz);
4449 if (stcb->asoc.tsn_in_at) {
4450 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4451 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4452 stcb->asoc.in_tsnlog[i].tsn,
4453 stcb->asoc.in_tsnlog[i].strm,
4454 stcb->asoc.in_tsnlog[i].seq,
4455 stcb->asoc.in_tsnlog[i].flgs,
4456 stcb->asoc.in_tsnlog[i].sz);
4460 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4461 if ((stcb->asoc.tsn_out_at == 0) &&
4462 (stcb->asoc.tsn_out_wrapped == 0)) {
4463 SCTP_PRINTF("None sent\n");
4465 if (stcb->asoc.tsn_out_wrapped) {
4466 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4467 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4468 stcb->asoc.out_tsnlog[i].tsn,
4469 stcb->asoc.out_tsnlog[i].strm,
4470 stcb->asoc.out_tsnlog[i].seq,
4471 stcb->asoc.out_tsnlog[i].flgs,
4472 stcb->asoc.out_tsnlog[i].sz);
4475 if (stcb->asoc.tsn_out_at) {
4476 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4477 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4478 stcb->asoc.out_tsnlog[i].tsn,
4479 stcb->asoc.out_tsnlog[i].strm,
4480 stcb->asoc.out_tsnlog[i].seq,
4481 stcb->asoc.out_tsnlog[i].flgs,
4482 stcb->asoc.out_tsnlog[i].sz);
4490 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4491 struct mbuf *op_err, bool timedout, int so_locked)
4493 struct sctp_gen_error_cause *cause;
4494 uint16_t cause_code;
4497 /* Got to have a TCB */
4498 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4499 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4500 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4501 SCTP_CALLED_DIRECTLY_NOCMPSET);
4506 if (op_err != NULL) {
4507 /* Read the cause code from the error cause. */
4508 cause = mtod(op_err, struct sctp_gen_error_cause *);
4509 cause_code = ntohs(cause->code);
4513 /* notify the peer */
4514 sctp_send_abort_tcb(stcb, op_err, so_locked);
4515 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4516 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
4517 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4518 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4520 /* notify the ulp */
4521 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4522 sctp_abort_notification(stcb, false, timedout, cause_code, NULL, so_locked);
4524 /* now free the asoc */
4525 #ifdef SCTP_ASOCLOG_OF_TSNS
4526 sctp_print_out_track_log(stcb);
4528 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4529 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4533 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4534 struct sockaddr *src, struct sockaddr *dst,
4535 struct sctphdr *sh, struct sctp_inpcb *inp,
4537 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4538 uint32_t vrf_id, uint16_t port)
4540 struct sctp_chunkhdr *ch, chunk_buf;
4541 unsigned int chk_length;
4542 int contains_init_chunk;
4544 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4545 /* Generate a TO address for future reference */
4546 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4547 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4548 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4549 SCTP_CALLED_DIRECTLY_NOCMPSET);
4552 contains_init_chunk = 0;
4553 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4554 sizeof(*ch), (uint8_t *)&chunk_buf);
4555 while (ch != NULL) {
4556 chk_length = ntohs(ch->chunk_length);
4557 if (chk_length < sizeof(*ch)) {
4558 /* break to abort land */
4561 switch (ch->chunk_type) {
4563 contains_init_chunk = 1;
4565 case SCTP_PACKET_DROPPED:
4566 /* we don't respond to pkt-dropped */
4568 case SCTP_ABORT_ASSOCIATION:
4569 /* we don't respond with an ABORT to an ABORT */
4571 case SCTP_SHUTDOWN_COMPLETE:
4573 * we ignore it since we are not waiting for it and
4577 case SCTP_SHUTDOWN_ACK:
4578 sctp_send_shutdown_complete2(src, dst, sh,
4579 mflowtype, mflowid, fibnum,
4585 offset += SCTP_SIZE32(chk_length);
4586 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4587 sizeof(*ch), (uint8_t *)&chunk_buf);
4589 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4590 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4591 (contains_init_chunk == 0))) {
4592 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4593 mflowtype, mflowid, fibnum,
4599 * check the inbound datagram to make sure there is not an abort inside it,
4600 * if there is return 1, else return 0.
4603 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtag)
4605 struct sctp_chunkhdr *ch;
4606 struct sctp_init_chunk *init_chk, chunk_buf;
4608 unsigned int chk_length;
4610 offset = iphlen + sizeof(struct sctphdr);
4611 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4612 (uint8_t *)&chunk_buf);
4613 while (ch != NULL) {
4614 chk_length = ntohs(ch->chunk_length);
4615 if (chk_length < sizeof(*ch)) {
4616 /* packet is probably corrupt */
4619 /* we seem to be ok, is it an abort? */
4620 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4621 /* yep, tell them */
4624 if ((ch->chunk_type == SCTP_INITIATION) ||
4625 (ch->chunk_type == SCTP_INITIATION_ACK)) {
4626 /* need to update the Vtag */
4627 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4628 offset, sizeof(struct sctp_init_chunk), (uint8_t *)&chunk_buf);
4629 if (init_chk != NULL) {
4630 *vtag = ntohl(init_chk->init.initiate_tag);
4633 /* Nope, move to the next chunk */
4634 offset += SCTP_SIZE32(chk_length);
4635 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4636 sizeof(*ch), (uint8_t *)&chunk_buf);
4642 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4643 * set (i.e. it's 0) so, create this function to compare link local scopes
4647 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4649 struct sockaddr_in6 a, b;
4655 if (a.sin6_scope_id == 0)
4656 if (sa6_recoverscope(&a)) {
4657 /* can't get scope, so can't match */
4660 if (b.sin6_scope_id == 0)
4661 if (sa6_recoverscope(&b)) {
4662 /* can't get scope, so can't match */
4665 if (a.sin6_scope_id != b.sin6_scope_id)
4672 * returns a sockaddr_in6 with embedded scope recovered and removed
4674 struct sockaddr_in6 *
4675 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4677 /* check and strip embedded scope junk */
4678 if (addr->sin6_family == AF_INET6) {
4679 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4680 if (addr->sin6_scope_id == 0) {
4682 if (!sa6_recoverscope(store)) {
4683 /* use the recovered scope */
4687 /* else, return the original "to" addr */
4688 in6_clearscope(&addr->sin6_addr);
4697 * are the two addresses the same? currently a "scopeless" check returns: 1
4701 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4705 if (sa1 == NULL || sa2 == NULL)
4708 /* must be the same family */
4709 if (sa1->sa_family != sa2->sa_family)
4712 switch (sa1->sa_family) {
4716 /* IPv6 addresses */
4717 struct sockaddr_in6 *sin6_1, *sin6_2;
4719 sin6_1 = (struct sockaddr_in6 *)sa1;
4720 sin6_2 = (struct sockaddr_in6 *)sa2;
4721 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4728 /* IPv4 addresses */
4729 struct sockaddr_in *sin_1, *sin_2;
4731 sin_1 = (struct sockaddr_in *)sa1;
4732 sin_2 = (struct sockaddr_in *)sa2;
4733 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4737 /* we don't do these... */
4743 sctp_print_address(struct sockaddr *sa)
4746 char ip6buf[INET6_ADDRSTRLEN];
4749 switch (sa->sa_family) {
4753 struct sockaddr_in6 *sin6;
4755 sin6 = (struct sockaddr_in6 *)sa;
4756 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4757 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4758 ntohs(sin6->sin6_port),
4759 sin6->sin6_scope_id);
4766 struct sockaddr_in *sin;
4769 sin = (struct sockaddr_in *)sa;
4770 p = (unsigned char *)&sin->sin_addr;
4771 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4772 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4783 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4784 struct sctp_inpcb *new_inp,
4785 struct sctp_tcb *stcb,
4789 * go through our old INP and pull off any control structures that
4790 * belong to stcb and move then to the new inp.
4792 struct socket *old_so, *new_so;
4793 struct sctp_queued_to_read *control, *nctl;
4794 struct sctp_readhead tmp_queue;
4798 old_so = old_inp->sctp_socket;
4799 new_so = new_inp->sctp_socket;
4800 TAILQ_INIT(&tmp_queue);
4801 error = SOCK_IO_RECV_LOCK(old_so, waitflags);
4804 * Gak, can't get I/O lock, we have a problem. data will be
4805 * left stranded.. and we don't dare look at it since the
4806 * other thread may be reading something. Oh well, its a
4807 * screwed up app that does a peeloff OR a accept while
4808 * reading from the main socket... actually its only the
4809 * peeloff() case, since I think read will fail on a
4810 * listening socket..
4814 /* lock the socket buffers */
4815 SCTP_INP_READ_LOCK(old_inp);
4816 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4817 /* Pull off all for out target stcb */
4818 if (control->stcb == stcb) {
4819 /* remove it we want it */
4820 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4821 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4824 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4825 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4827 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4828 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4829 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4831 m = SCTP_BUF_NEXT(m);
4835 SCTP_INP_READ_UNLOCK(old_inp);
4836 /* Remove the recv-lock on the old socket */
4837 SOCK_IO_RECV_UNLOCK(old_so);
4838 /* Now we move them over to the new socket buffer */
4839 SCTP_INP_READ_LOCK(new_inp);
4840 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4841 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4844 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4845 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4847 sctp_sballoc(stcb, &new_so->so_rcv, m);
4848 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4849 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4851 m = SCTP_BUF_NEXT(m);
4854 SCTP_INP_READ_UNLOCK(new_inp);
4858 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
4859 struct sctp_tcb *stcb,
4864 if ((inp != NULL) && (inp->sctp_socket != NULL)) {
4865 sctp_sorwakeup(inp, inp->sctp_socket);
4870 sctp_add_to_readq(struct sctp_inpcb *inp,
4871 struct sctp_tcb *stcb,
4872 struct sctp_queued_to_read *control,
4875 int inp_read_lock_held,
4879 * Here we must place the control on the end of the socket read
4880 * queue AND increment sb_cc so that select will work properly on
4883 struct mbuf *m, *prev = NULL;
4888 panic("Gak, inp NULL on add_to_readq");
4892 if (inp_read_lock_held == 0)
4893 SCTP_INP_READ_LOCK(inp);
4894 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4895 if (!control->on_strm_q) {
4896 sctp_free_remote_addr(control->whoFrom);
4897 if (control->data) {
4898 sctp_m_freem(control->data);
4899 control->data = NULL;
4901 sctp_free_a_readq(stcb, control);
4903 if (inp_read_lock_held == 0)
4904 SCTP_INP_READ_UNLOCK(inp);
4907 if (!(control->spec_flags & M_NOTIFICATION)) {
4908 atomic_add_int(&inp->total_recvs, 1);
4909 if (!control->do_not_ref_stcb) {
4910 atomic_add_int(&stcb->total_recvs, 1);
4914 control->held_length = 0;
4915 control->length = 0;
4917 if (SCTP_BUF_LEN(m) == 0) {
4918 /* Skip mbufs with NO length */
4921 control->data = sctp_m_free(m);
4924 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4925 m = SCTP_BUF_NEXT(prev);
4928 control->tail_mbuf = prev;
4933 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4934 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4936 sctp_sballoc(stcb, sb, m);
4937 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4938 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4940 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4941 m = SCTP_BUF_NEXT(m);
4944 control->tail_mbuf = prev;
4946 /* Everything got collapsed out?? */
4947 if (!control->on_strm_q) {
4948 sctp_free_remote_addr(control->whoFrom);
4949 sctp_free_a_readq(stcb, control);
4951 if (inp_read_lock_held == 0)
4952 SCTP_INP_READ_UNLOCK(inp);
4956 control->end_added = 1;
4958 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4959 control->on_read_q = 1;
4960 if (inp_read_lock_held == 0)
4961 SCTP_INP_READ_UNLOCK(inp);
4962 if (inp && inp->sctp_socket) {
4963 sctp_wakeup_the_read_socket(inp, stcb, so_locked);
4967 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4968 *************ALTERNATE ROUTING CODE
4971 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4972 *************ALTERNATE ROUTING CODE
4976 sctp_generate_cause(uint16_t code, char *info)
4979 struct sctp_gen_error_cause *cause;
4983 if ((code == 0) || (info == NULL)) {
4986 info_len = strlen(info);
4987 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
4990 len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len);
4991 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4993 SCTP_BUF_LEN(m) = len;
4994 cause = mtod(m, struct sctp_gen_error_cause *);
4995 cause->code = htons(code);
4996 cause->length = htons(len);
4997 memcpy(cause->info, info, info_len);
5003 sctp_generate_no_user_data_cause(uint32_t tsn)
5006 struct sctp_error_no_user_data *no_user_data_cause;
5009 len = (uint16_t)sizeof(struct sctp_error_no_user_data);
5010 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
5012 SCTP_BUF_LEN(m) = len;
5013 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
5014 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
5015 no_user_data_cause->cause.length = htons(len);
5016 no_user_data_cause->tsn = htonl(tsn);
5021 #ifdef SCTP_MBCNT_LOGGING
5023 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
5024 struct sctp_tmit_chunk *tp1, int chk_cnt)
5026 if (tp1->data == NULL) {
5029 asoc->chunks_on_out_queue -= chk_cnt;
5030 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
5031 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
5032 asoc->total_output_queue_size,
5037 if (asoc->total_output_queue_size >= tp1->book_size) {
5038 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
5040 asoc->total_output_queue_size = 0;
5043 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
5044 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
5045 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
5046 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
5048 stcb->sctp_socket->so_snd.sb_cc = 0;
5056 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
5057 uint8_t sent, int so_locked)
5059 struct sctp_stream_out *strq;
5060 struct sctp_tmit_chunk *chk = NULL, *tp2;
5061 struct sctp_stream_queue_pending *sp;
5064 uint8_t foundeom = 0;
5067 int do_wakeup_routine = 0;
5069 sid = tp1->rec.data.sid;
5070 mid = tp1->rec.data.mid;
5071 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
5072 stcb->asoc.abandoned_sent[0]++;
5073 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
5074 stcb->asoc.strmout[sid].abandoned_sent[0]++;
5075 #if defined(SCTP_DETAILED_STR_STATS)
5076 stcb->asoc.strmout[sid].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
5079 stcb->asoc.abandoned_unsent[0]++;
5080 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
5081 stcb->asoc.strmout[sid].abandoned_unsent[0]++;
5082 #if defined(SCTP_DETAILED_STR_STATS)
5083 stcb->asoc.strmout[sid].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
5087 ret_sz += tp1->book_size;
5088 if (tp1->data != NULL) {
5089 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
5090 sctp_flight_size_decrease(tp1);
5091 sctp_total_flight_decrease(stcb, tp1);
5093 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
5094 stcb->asoc.peers_rwnd += tp1->send_size;
5095 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
5097 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
5099 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
5102 sctp_m_freem(tp1->data);
5105 do_wakeup_routine = 1;
5106 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
5107 stcb->asoc.sent_queue_cnt_removeable--;
5110 tp1->sent = SCTP_FORWARD_TSN_SKIP;
5111 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
5112 SCTP_DATA_NOT_FRAG) {
5113 /* not frag'ed we ae done */
5116 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
5117 /* end of frag, we are done */
5122 * Its a begin or middle piece, we must mark all of
5126 tp1 = TAILQ_NEXT(tp1, sctp_next);
5128 } while (tp1 && notdone);
5129 if (foundeom == 0) {
5131 * The multi-part message was scattered across the send and
5134 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
5135 if ((tp1->rec.data.sid != sid) ||
5136 (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) {
5140 * save to chk in case we have some on stream out
5141 * queue. If so and we have an un-transmitted one we
5142 * don't have to fudge the TSN.
5145 ret_sz += tp1->book_size;
5146 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
5148 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
5150 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
5153 sctp_m_freem(tp1->data);
5156 /* No flight involved here book the size to 0 */
5158 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
5161 do_wakeup_routine = 1;
5162 tp1->sent = SCTP_FORWARD_TSN_SKIP;
5163 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
5165 * on to the sent queue so we can wait for it to be
5168 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
5170 stcb->asoc.send_queue_cnt--;
5171 stcb->asoc.sent_queue_cnt++;
5174 if (foundeom == 0) {
5176 * Still no eom found. That means there is stuff left on the
5177 * stream out queue.. yuck.
5179 SCTP_TCB_SEND_LOCK(stcb);
5180 strq = &stcb->asoc.strmout[sid];
5181 sp = TAILQ_FIRST(&strq->outqueue);
5183 sp->discard_rest = 1;
5185 * We may need to put a chunk on the queue that
5186 * holds the TSN that would have been sent with the
5190 /* Yep, we have to */
5191 sctp_alloc_a_chunk(stcb, chk);
5194 * we are hosed. All we can do is
5195 * nothing.. which will cause an
5196 * abort if the peer is paying
5201 memset(chk, 0, sizeof(*chk));
5202 chk->rec.data.rcv_flags = 0;
5203 chk->sent = SCTP_FORWARD_TSN_SKIP;
5204 chk->asoc = &stcb->asoc;
5205 if (stcb->asoc.idata_supported == 0) {
5206 if (sp->sinfo_flags & SCTP_UNORDERED) {
5207 chk->rec.data.mid = 0;
5209 chk->rec.data.mid = strq->next_mid_ordered;
5212 if (sp->sinfo_flags & SCTP_UNORDERED) {
5213 chk->rec.data.mid = strq->next_mid_unordered;
5215 chk->rec.data.mid = strq->next_mid_ordered;
5218 chk->rec.data.sid = sp->sid;
5219 chk->rec.data.ppid = sp->ppid;
5220 chk->rec.data.context = sp->context;
5221 chk->flags = sp->act_flags;
5223 chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
5224 strq->chunks_on_queues++;
5225 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
5226 stcb->asoc.sent_queue_cnt++;
5227 stcb->asoc.pr_sctp_cnt++;
5229 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
5230 if (sp->sinfo_flags & SCTP_UNORDERED) {
5231 chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED;
5233 if (stcb->asoc.idata_supported == 0) {
5234 if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) {
5235 strq->next_mid_ordered++;
5238 if (sp->sinfo_flags & SCTP_UNORDERED) {
5239 strq->next_mid_unordered++;
5241 strq->next_mid_ordered++;
5247 * Pull any data to free up the SB and allow
5248 * sender to "add more" while we will throw
5251 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
5252 ret_sz += sp->length;
5253 do_wakeup_routine = 1;
5255 sctp_m_freem(sp->data);
5257 sp->tail_mbuf = NULL;
5261 SCTP_TCB_SEND_UNLOCK(stcb);
5263 if (do_wakeup_routine) {
5264 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
5270 * checks to see if the given address, sa, is one that is currently known by
5271 * the kernel note: can't distinguish the same address on multiple interfaces
5272 * and doesn't handle multiple addresses with different zone/scope id's note:
5273 * ifa_ifwithaddr() compares the entire sockaddr struct
5276 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
5279 struct sctp_laddr *laddr;
5281 if (holds_lock == 0) {
5282 SCTP_INP_RLOCK(inp);
5285 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5286 if (laddr->ifa == NULL)
5288 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
5291 if (addr->sa_family == AF_INET) {
5292 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5293 laddr->ifa->address.sin.sin_addr.s_addr) {
5300 if (addr->sa_family == AF_INET6) {
5301 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5302 &laddr->ifa->address.sin6)) {
5309 if (holds_lock == 0) {
5310 SCTP_INP_RUNLOCK(inp);
5312 if (laddr != NULL) {
5313 return (laddr->ifa);
5320 sctp_get_ifa_hash_val(struct sockaddr *addr)
5322 switch (addr->sa_family) {
5326 struct sockaddr_in *sin;
5328 sin = (struct sockaddr_in *)addr;
5329 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
5335 struct sockaddr_in6 *sin6;
5336 uint32_t hash_of_addr;
5338 sin6 = (struct sockaddr_in6 *)addr;
5339 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5340 sin6->sin6_addr.s6_addr32[1] +
5341 sin6->sin6_addr.s6_addr32[2] +
5342 sin6->sin6_addr.s6_addr32[3]);
5343 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5344 return (hash_of_addr);
5354 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5356 struct sctp_ifa *sctp_ifap;
5357 struct sctp_vrf *vrf;
5358 struct sctp_ifalist *hash_head;
5359 uint32_t hash_of_addr;
5361 if (holds_lock == 0) {
5362 SCTP_IPI_ADDR_RLOCK();
5364 SCTP_IPI_ADDR_LOCK_ASSERT();
5367 vrf = sctp_find_vrf(vrf_id);
5369 if (holds_lock == 0)
5370 SCTP_IPI_ADDR_RUNLOCK();
5374 hash_of_addr = sctp_get_ifa_hash_val(addr);
5376 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5377 if (hash_head == NULL) {
5378 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5379 hash_of_addr, (uint32_t)vrf->vrf_addr_hashmark,
5380 (uint32_t)(hash_of_addr & vrf->vrf_addr_hashmark));
5381 sctp_print_address(addr);
5382 SCTP_PRINTF("No such bucket for address\n");
5383 if (holds_lock == 0)
5384 SCTP_IPI_ADDR_RUNLOCK();
5388 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5389 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5392 if (addr->sa_family == AF_INET) {
5393 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5394 sctp_ifap->address.sin.sin_addr.s_addr) {
5401 if (addr->sa_family == AF_INET6) {
5402 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5403 &sctp_ifap->address.sin6)) {
5410 if (holds_lock == 0)
5411 SCTP_IPI_ADDR_RUNLOCK();
5416 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t *freed_so_far, int hold_rlock,
5419 /* User pulled some data, do we need a rwnd update? */
5420 struct epoch_tracker et;
5423 struct socket *so = NULL;
5428 atomic_add_int(&stcb->asoc.refcnt, 1);
5430 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_ACK_SENT) ||
5431 (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED | SCTP_STATE_SHUTDOWN_RECEIVED))) {
5432 /* Pre-check If we are freeing no update */
5435 SCTP_INP_INCR_REF(stcb->sctp_ep);
5436 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5437 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5440 so = stcb->sctp_socket;
5444 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5445 /* Have you have freed enough to look */
5447 /* Yep, its worth a look and the lock overhead */
5449 /* Figure out what the rwnd would be */
5450 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5451 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5452 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5456 if (dif >= rwnd_req) {
5458 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5461 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5463 * One last check before we allow the guy possibly
5464 * to get in. There is a race, where the guy has not
5465 * reached the gate. In that case
5469 SCTP_TCB_LOCK(stcb);
5470 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5471 /* No reports here */
5472 SCTP_TCB_UNLOCK(stcb);
5475 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5476 NET_EPOCH_ENTER(et);
5477 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5479 sctp_chunk_output(stcb->sctp_ep, stcb,
5480 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5481 /* make sure no timer is running */
5483 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5484 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5485 SCTP_TCB_UNLOCK(stcb);
5487 /* Update how much we have pending */
5488 stcb->freed_by_sorcv_sincelast = dif;
5491 if (so && r_unlocked && hold_rlock) {
5492 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5495 SCTP_INP_DECR_REF(stcb->sctp_ep);
5497 atomic_add_int(&stcb->asoc.refcnt, -1);
5502 sctp_sorecvmsg(struct socket *so,
5505 struct sockaddr *from,
5508 struct sctp_sndrcvinfo *sinfo,
5512 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5513 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5514 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5515 * On the way out we may send out any combination of:
5516 * MSG_NOTIFICATION MSG_EOR
5519 struct sctp_inpcb *inp = NULL;
5523 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5524 struct mbuf *m = NULL;
5525 struct sctp_tcb *stcb = NULL;
5526 int wakeup_read_socket = 0;
5527 int freecnt_applied = 0;
5528 int out_flags = 0, in_flags = 0;
5529 int block_allowed = 1;
5530 uint32_t freed_so_far = 0;
5531 ssize_t copied_so_far = 0;
5532 int in_eeor_mode = 0;
5533 int no_rcv_needed = 0;
5534 uint32_t rwnd_req = 0;
5535 int hold_sblock = 0;
5538 uint32_t held_length = 0;
5539 int sockbuf_lock = 0;
5542 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5547 in_flags = *msg_flags;
5548 if (in_flags & MSG_PEEK)
5549 SCTP_STAT_INCR(sctps_read_peeks);
5553 slen = uio->uio_resid;
5555 /* Pull in and set up our int flags */
5556 if (in_flags & MSG_OOB) {
5557 /* Out of band's NOT supported */
5558 return (EOPNOTSUPP);
5560 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5561 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5564 if ((in_flags & (MSG_DONTWAIT
5567 SCTP_SO_IS_NBIO(so)) {
5570 /* setup the endpoint */
5571 inp = (struct sctp_inpcb *)so->so_pcb;
5573 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5576 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5577 /* Must be at least a MTU's worth */
5578 if (rwnd_req < SCTP_MIN_RWND)
5579 rwnd_req = SCTP_MIN_RWND;
5580 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5581 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5582 sctp_misc_ints(SCTP_SORECV_ENTER,
5583 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5585 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5586 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5587 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5590 error = SOCK_IO_RECV_LOCK(so, SBLOCKWAIT(in_flags));
5592 goto release_unlocked;
5598 if (hold_sblock == 0) {
5599 SOCKBUF_LOCK(&so->so_rcv);
5602 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5603 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5606 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5608 error = so->so_error;
5609 if ((in_flags & MSG_PEEK) == 0)
5613 if (so->so_rcv.sb_cc == 0) {
5620 if (so->so_rcv.sb_cc <= held_length) {
5622 error = so->so_error;
5623 if ((in_flags & MSG_PEEK) == 0) {
5628 if ((so->so_rcv.sb_cc == 0) &&
5629 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5630 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5631 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5633 * For active open side clear flags for
5634 * re-use passive open is blocked by
5637 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5639 * You were aborted, passive side
5642 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5645 so->so_state &= ~(SS_ISCONNECTING |
5646 SS_ISDISCONNECTING |
5650 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5651 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5658 if (block_allowed) {
5659 error = sbwait(&so->so_rcv);
5664 goto restart_nosblocks;
5666 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5667 error = EWOULDBLOCK;
5671 if (hold_sblock == 1) {
5672 SOCKBUF_UNLOCK(&so->so_rcv);
5675 /* we possibly have data we can read */
5676 /* sa_ignore FREED_MEMORY */
5677 control = TAILQ_FIRST(&inp->read_queue);
5678 if (control == NULL) {
5680 * This could be happening since the appender did the
5681 * increment but as not yet did the tailq insert onto the
5684 if (hold_rlock == 0) {
5685 SCTP_INP_READ_LOCK(inp);
5687 control = TAILQ_FIRST(&inp->read_queue);
5688 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5690 panic("Huh, its non zero and nothing on control?");
5692 so->so_rcv.sb_cc = 0;
5694 SCTP_INP_READ_UNLOCK(inp);
5699 if ((control->length == 0) &&
5700 (control->do_not_ref_stcb)) {
5702 * Clean up code for freeing assoc that left behind a
5703 * pdapi.. maybe a peer in EEOR that just closed after
5704 * sending and never indicated a EOR.
5706 if (hold_rlock == 0) {
5708 SCTP_INP_READ_LOCK(inp);
5710 control->held_length = 0;
5711 if (control->data) {
5712 /* Hmm there is data here .. fix */
5716 m_tmp = control->data;
5718 cnt += SCTP_BUF_LEN(m_tmp);
5719 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5720 control->tail_mbuf = m_tmp;
5721 control->end_added = 1;
5723 m_tmp = SCTP_BUF_NEXT(m_tmp);
5725 control->length = cnt;
5728 TAILQ_REMOVE(&inp->read_queue, control, next);
5729 /* Add back any hiddend data */
5730 sctp_free_remote_addr(control->whoFrom);
5731 sctp_free_a_readq(stcb, control);
5735 SCTP_INP_READ_UNLOCK(inp);
5739 if ((control->length == 0) &&
5740 (control->end_added == 1)) {
5742 * Do we also need to check for (control->pdapi_aborted ==
5745 if (hold_rlock == 0) {
5747 SCTP_INP_READ_LOCK(inp);
5749 TAILQ_REMOVE(&inp->read_queue, control, next);
5750 if (control->data) {
5752 panic("control->data not null but control->length == 0");
5754 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5755 sctp_m_freem(control->data);
5756 control->data = NULL;
5759 if (control->aux_data) {
5760 sctp_m_free(control->aux_data);
5761 control->aux_data = NULL;
5764 if (control->on_strm_q) {
5765 panic("About to free ctl:%p so:%p and its in %d",
5766 control, so, control->on_strm_q);
5769 sctp_free_remote_addr(control->whoFrom);
5770 sctp_free_a_readq(stcb, control);
5773 SCTP_INP_READ_UNLOCK(inp);
5777 if (control->length == 0) {
5778 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5780 /* find a more suitable one then this */
5781 ctl = TAILQ_NEXT(control, next);
5783 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5785 (ctl->spec_flags & M_NOTIFICATION) ||
5786 ((ctl->do_not_ref_stcb == 0) &&
5787 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5790 * If we have a different TCB next, and there is data
5791 * present. If we have already taken some (pdapi), OR we can
5792 * ref the tcb and no delivery as started on this stream, we
5793 * take it. Note we allow a notification on a different
5794 * assoc to be delivered..
5798 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5800 ((ctl->some_taken) ||
5801 ((ctl->do_not_ref_stcb == 0) &&
5802 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5803 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5805 * If we have the same tcb, and there is data present, and we
5806 * have the strm interleave feature present. Then if we have
5807 * taken some (pdapi) or we can refer to tht tcb AND we have
5808 * not started a delivery for this stream, we can take it.
5809 * Note we do NOT allow a notificaiton on the same assoc to
5815 ctl = TAILQ_NEXT(ctl, next);
5819 * if we reach here, not suitable replacement is available
5820 * <or> fragment interleave is NOT on. So stuff the sb_cc
5821 * into the our held count, and its time to sleep again.
5823 held_length = so->so_rcv.sb_cc;
5824 control->held_length = so->so_rcv.sb_cc;
5827 /* Clear the held length since there is something to read */
5828 control->held_length = 0;
5831 * If we reach here, control has a some data for us to read off.
5832 * Note that stcb COULD be NULL.
5834 if (hold_rlock == 0) {
5836 SCTP_INP_READ_LOCK(inp);
5838 control->some_taken++;
5839 stcb = control->stcb;
5841 if ((control->do_not_ref_stcb == 0) &&
5842 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5843 if (freecnt_applied == 0)
5845 } else if (control->do_not_ref_stcb == 0) {
5846 /* you can't free it on me please */
5848 * The lock on the socket buffer protects us so the
5849 * free code will stop. But since we used the
5850 * socketbuf lock and the sender uses the tcb_lock
5851 * to increment, we need to use the atomic add to
5854 if (freecnt_applied) {
5856 panic("refcnt already incremented");
5858 SCTP_PRINTF("refcnt already incremented?\n");
5861 atomic_add_int(&stcb->asoc.refcnt, 1);
5862 freecnt_applied = 1;
5865 * Setup to remember how much we have not yet told
5866 * the peer our rwnd has opened up. Note we grab the
5867 * value from the tcb from last time. Note too that
5868 * sack sending clears this when a sack is sent,
5869 * which is fine. Once we hit the rwnd_req, we then
5870 * will go to the sctp_user_rcvd() that will not
5871 * lock until it KNOWs it MUST send a WUP-SACK.
5873 freed_so_far = (uint32_t)stcb->freed_by_sorcv_sincelast;
5874 stcb->freed_by_sorcv_sincelast = 0;
5878 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5879 control->do_not_ref_stcb == 0) {
5880 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5883 /* First lets get off the sinfo and sockaddr info */
5884 if ((sinfo != NULL) && (filling_sinfo != 0)) {
5885 sinfo->sinfo_stream = control->sinfo_stream;
5886 sinfo->sinfo_ssn = (uint16_t)control->mid;
5887 sinfo->sinfo_flags = control->sinfo_flags;
5888 sinfo->sinfo_ppid = control->sinfo_ppid;
5889 sinfo->sinfo_context = control->sinfo_context;
5890 sinfo->sinfo_timetolive = control->sinfo_timetolive;
5891 sinfo->sinfo_tsn = control->sinfo_tsn;
5892 sinfo->sinfo_cumtsn = control->sinfo_cumtsn;
5893 sinfo->sinfo_assoc_id = control->sinfo_assoc_id;
5894 nxt = TAILQ_NEXT(control, next);
5895 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5896 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5897 struct sctp_extrcvinfo *s_extra;
5899 s_extra = (struct sctp_extrcvinfo *)sinfo;
5902 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5903 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5904 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5906 if (nxt->spec_flags & M_NOTIFICATION) {
5907 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5909 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5910 s_extra->serinfo_next_length = nxt->length;
5911 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5912 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5913 if (nxt->tail_mbuf != NULL) {
5914 if (nxt->end_added) {
5915 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5920 * we explicitly 0 this, since the memcpy
5921 * got some other things beyond the older
5922 * sinfo_ that is on the control's structure
5926 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5927 s_extra->serinfo_next_aid = 0;
5928 s_extra->serinfo_next_length = 0;
5929 s_extra->serinfo_next_ppid = 0;
5930 s_extra->serinfo_next_stream = 0;
5934 * update off the real current cum-ack, if we have an stcb.
5936 if ((control->do_not_ref_stcb == 0) && stcb)
5937 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5939 * mask off the high bits, we keep the actual chunk bits in
5942 sinfo->sinfo_flags &= 0x00ff;
5943 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5944 sinfo->sinfo_flags |= SCTP_UNORDERED;
5947 #ifdef SCTP_ASOCLOG_OF_TSNS
5949 int index, newindex;
5950 struct sctp_pcbtsn_rlog *entry;
5953 index = inp->readlog_index;
5954 newindex = index + 1;
5955 if (newindex >= SCTP_READ_LOG_SIZE) {
5958 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5959 entry = &inp->readlog[index];
5960 entry->vtag = control->sinfo_assoc_id;
5961 entry->strm = control->sinfo_stream;
5962 entry->seq = (uint16_t)control->mid;
5963 entry->sz = control->length;
5964 entry->flgs = control->sinfo_flags;
5967 if ((fromlen > 0) && (from != NULL)) {
5968 union sctp_sockstore store;
5971 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5974 len = sizeof(struct sockaddr_in6);
5975 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5976 store.sin6.sin6_port = control->port_from;
5982 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5983 len = sizeof(struct sockaddr_in6);
5984 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5986 store.sin6.sin6_port = control->port_from;
5988 len = sizeof(struct sockaddr_in);
5989 store.sin = control->whoFrom->ro._l_addr.sin;
5990 store.sin.sin_port = control->port_from;
5993 len = sizeof(struct sockaddr_in);
5994 store.sin = control->whoFrom->ro._l_addr.sin;
5995 store.sin.sin_port = control->port_from;
6003 memcpy(from, &store, min((size_t)fromlen, len));
6006 struct sockaddr_in6 lsa6, *from6;
6008 from6 = (struct sockaddr_in6 *)from;
6009 sctp_recover_scope_mac(from6, (&lsa6));
6014 SCTP_INP_READ_UNLOCK(inp);
6018 SOCKBUF_UNLOCK(&so->so_rcv);
6021 /* now copy out what data we can */
6023 /* copy out each mbuf in the chain up to length */
6027 /* Move out all we can */
6028 cp_len = uio->uio_resid;
6029 my_len = SCTP_BUF_LEN(m);
6030 if (cp_len > my_len) {
6031 /* not enough in this buf */
6035 SCTP_INP_READ_UNLOCK(inp);
6039 error = uiomove(mtod(m, char *), (int)cp_len, uio);
6041 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
6045 if ((control->do_not_ref_stcb == 0) && stcb &&
6046 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
6050 /* error we are out of here */
6053 SCTP_INP_READ_LOCK(inp);
6055 if (cp_len == SCTP_BUF_LEN(m)) {
6056 if ((SCTP_BUF_NEXT(m) == NULL) &&
6057 (control->end_added)) {
6058 out_flags |= MSG_EOR;
6059 if ((control->do_not_ref_stcb == 0) &&
6060 (control->stcb != NULL) &&
6061 ((control->spec_flags & M_NOTIFICATION) == 0))
6062 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6064 if (control->spec_flags & M_NOTIFICATION) {
6065 out_flags |= MSG_NOTIFICATION;
6067 /* we ate up the mbuf */
6068 if (in_flags & MSG_PEEK) {
6070 m = SCTP_BUF_NEXT(m);
6071 copied_so_far += cp_len;
6073 /* dispose of the mbuf */
6074 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6075 sctp_sblog(&so->so_rcv,
6076 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6078 sctp_sbfree(control, stcb, &so->so_rcv, m);
6079 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6080 sctp_sblog(&so->so_rcv,
6081 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6083 copied_so_far += cp_len;
6084 freed_so_far += (uint32_t)cp_len;
6085 freed_so_far += MSIZE;
6086 atomic_subtract_int(&control->length, (int)cp_len);
6087 control->data = sctp_m_free(m);
6090 * been through it all, must hold sb
6091 * lock ok to null tail
6093 if (control->data == NULL) {
6095 if ((control->end_added == 0) ||
6096 (TAILQ_NEXT(control, next) == NULL)) {
6104 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
6105 panic("Hmm we don't own the lock?");
6109 control->tail_mbuf = NULL;
6111 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
6112 panic("end_added, nothing left and no MSG_EOR");
6118 /* Do we need to trim the mbuf? */
6119 if (control->spec_flags & M_NOTIFICATION) {
6120 out_flags |= MSG_NOTIFICATION;
6122 if ((in_flags & MSG_PEEK) == 0) {
6123 SCTP_BUF_RESV_UF(m, cp_len);
6124 SCTP_BUF_LEN(m) -= (int)cp_len;
6125 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6126 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, (int)cp_len);
6128 atomic_subtract_int(&so->so_rcv.sb_cc, (int)cp_len);
6129 if ((control->do_not_ref_stcb == 0) &&
6131 atomic_subtract_int(&stcb->asoc.sb_cc, (int)cp_len);
6133 copied_so_far += cp_len;
6134 freed_so_far += (uint32_t)cp_len;
6135 freed_so_far += MSIZE;
6136 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6137 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
6138 SCTP_LOG_SBRESULT, 0);
6140 atomic_subtract_int(&control->length, (int)cp_len);
6142 copied_so_far += cp_len;
6145 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
6148 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
6149 (control->do_not_ref_stcb == 0) &&
6150 (freed_so_far >= rwnd_req)) {
6151 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6153 } /* end while(m) */
6155 * At this point we have looked at it all and we either have
6156 * a MSG_EOR/or read all the user wants... <OR>
6157 * control->length == 0.
6159 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
6160 /* we are done with this control */
6161 if (control->length == 0) {
6162 if (control->data) {
6164 panic("control->data not null at read eor?");
6166 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
6167 sctp_m_freem(control->data);
6168 control->data = NULL;
6172 if (hold_rlock == 0) {
6173 SCTP_INP_READ_LOCK(inp);
6176 TAILQ_REMOVE(&inp->read_queue, control, next);
6177 /* Add back any hiddend data */
6178 if (control->held_length) {
6180 control->held_length = 0;
6181 wakeup_read_socket = 1;
6183 if (control->aux_data) {
6184 sctp_m_free(control->aux_data);
6185 control->aux_data = NULL;
6187 no_rcv_needed = control->do_not_ref_stcb;
6188 sctp_free_remote_addr(control->whoFrom);
6189 control->data = NULL;
6191 if (control->on_strm_q) {
6192 panic("About to free ctl:%p so:%p and its in %d",
6193 control, so, control->on_strm_q);
6196 sctp_free_a_readq(stcb, control);
6198 if ((freed_so_far >= rwnd_req) &&
6199 (no_rcv_needed == 0))
6200 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6204 * The user did not read all of this
6205 * message, turn off the returned MSG_EOR
6206 * since we are leaving more behind on the
6210 if (control->end_added &&
6211 (control->data == NULL) &&
6212 (control->tail_mbuf == NULL)) {
6213 panic("Gak, control->length is corrupt?");
6216 no_rcv_needed = control->do_not_ref_stcb;
6217 out_flags &= ~MSG_EOR;
6220 if (out_flags & MSG_EOR) {
6223 if ((uio->uio_resid == 0) ||
6225 (copied_so_far >= max(so->so_rcv.sb_lowat, 1)))) {
6229 * If I hit here the receiver wants more and this message is
6230 * NOT done (pd-api). So two questions. Can we block? if not
6231 * we are done. Did the user NOT set MSG_WAITALL?
6233 if (block_allowed == 0) {
6237 * We need to wait for more data a few things: - We don't
6238 * release the I/O lock so we don't get someone else
6239 * reading. - We must be sure to account for the case where
6240 * what is added is NOT to our control when we wakeup.
6244 * Do we need to tell the transport a rwnd update might be
6245 * needed before we go to sleep?
6247 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
6248 ((freed_so_far >= rwnd_req) &&
6249 (control->do_not_ref_stcb == 0) &&
6250 (no_rcv_needed == 0))) {
6251 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6254 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
6258 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
6261 if (hold_rlock == 1) {
6262 SCTP_INP_READ_UNLOCK(inp);
6265 if (hold_sblock == 0) {
6266 SOCKBUF_LOCK(&so->so_rcv);
6269 if ((copied_so_far) && (control->length == 0) &&
6270 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
6273 if (so->so_rcv.sb_cc <= control->held_length) {
6274 error = sbwait(&so->so_rcv);
6278 control->held_length = 0;
6281 SOCKBUF_UNLOCK(&so->so_rcv);
6284 if (control->length == 0) {
6285 /* still nothing here */
6286 if (control->end_added == 1) {
6287 /* he aborted, or is done i.e.did a shutdown */
6288 out_flags |= MSG_EOR;
6289 if (control->pdapi_aborted) {
6290 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6291 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6293 out_flags |= MSG_TRUNC;
6295 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6296 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6298 goto done_with_control;
6300 if (so->so_rcv.sb_cc > held_length) {
6301 control->held_length = so->so_rcv.sb_cc;
6304 goto wait_some_more;
6305 } else if (control->data == NULL) {
6307 * we must re-sync since data is probably being
6310 SCTP_INP_READ_LOCK(inp);
6311 if ((control->length > 0) && (control->data == NULL)) {
6313 * big trouble.. we have the lock and its
6317 panic("Impossible data==NULL length !=0");
6319 out_flags |= MSG_EOR;
6320 out_flags |= MSG_TRUNC;
6321 control->length = 0;
6322 SCTP_INP_READ_UNLOCK(inp);
6323 goto done_with_control;
6325 SCTP_INP_READ_UNLOCK(inp);
6326 /* We will fall around to get more data */
6331 * Give caller back the mbuf chain,
6332 * store in uio_resid the length
6334 wakeup_read_socket = 0;
6335 if ((control->end_added == 0) ||
6336 (TAILQ_NEXT(control, next) == NULL)) {
6337 /* Need to get rlock */
6338 if (hold_rlock == 0) {
6339 SCTP_INP_READ_LOCK(inp);
6343 if (control->end_added) {
6344 out_flags |= MSG_EOR;
6345 if ((control->do_not_ref_stcb == 0) &&
6346 (control->stcb != NULL) &&
6347 ((control->spec_flags & M_NOTIFICATION) == 0))
6348 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6350 if (control->spec_flags & M_NOTIFICATION) {
6351 out_flags |= MSG_NOTIFICATION;
6353 uio->uio_resid = control->length;
6354 *mp = control->data;
6357 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6358 sctp_sblog(&so->so_rcv,
6359 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6361 sctp_sbfree(control, stcb, &so->so_rcv, m);
6362 freed_so_far += (uint32_t)SCTP_BUF_LEN(m);
6363 freed_so_far += MSIZE;
6364 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6365 sctp_sblog(&so->so_rcv,
6366 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6368 m = SCTP_BUF_NEXT(m);
6370 control->data = control->tail_mbuf = NULL;
6371 control->length = 0;
6372 if (out_flags & MSG_EOR) {
6373 /* Done with this control */
6374 goto done_with_control;
6378 if (hold_rlock == 1) {
6379 SCTP_INP_READ_UNLOCK(inp);
6382 if (hold_sblock == 1) {
6383 SOCKBUF_UNLOCK(&so->so_rcv);
6387 SOCK_IO_RECV_UNLOCK(so);
6392 SOCKBUF_UNLOCK(&so->so_rcv);
6395 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6396 if ((freed_so_far >= rwnd_req) &&
6397 (control && (control->do_not_ref_stcb == 0)) &&
6398 (no_rcv_needed == 0))
6399 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6403 *msg_flags = out_flags;
6405 if (((out_flags & MSG_EOR) == 0) &&
6406 ((in_flags & MSG_PEEK) == 0) &&
6408 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6409 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6410 struct sctp_extrcvinfo *s_extra;
6412 s_extra = (struct sctp_extrcvinfo *)sinfo;
6413 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6415 if (hold_rlock == 1) {
6416 SCTP_INP_READ_UNLOCK(inp);
6419 SOCKBUF_UNLOCK(&so->so_rcv);
6422 SOCK_IO_RECV_UNLOCK(so);
6425 if (freecnt_applied) {
6427 * The lock on the socket buffer protects us so the free
6428 * code will stop. But since we used the socketbuf lock and
6429 * the sender uses the tcb_lock to increment, we need to use
6430 * the atomic add to the refcnt.
6434 panic("stcb for refcnt has gone NULL?");
6440 /* Save the value back for next time */
6441 stcb->freed_by_sorcv_sincelast = freed_so_far;
6442 atomic_add_int(&stcb->asoc.refcnt, -1);
6444 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6446 sctp_misc_ints(SCTP_SORECV_DONE,
6448 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6452 sctp_misc_ints(SCTP_SORECV_DONE,
6454 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6460 if (wakeup_read_socket) {
6461 sctp_sorwakeup(inp, so);
6466 #ifdef SCTP_MBUF_LOGGING
6468 sctp_m_free(struct mbuf *m)
6470 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6471 sctp_log_mb(m, SCTP_MBUF_IFREE);
6477 sctp_m_freem(struct mbuf *mb)
6480 mb = sctp_m_free(mb);
6486 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6489 * Given a local address. For all associations that holds the
6490 * address, request a peer-set-primary.
6492 struct sctp_ifa *ifa;
6493 struct sctp_laddr *wi;
6495 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
6497 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6498 return (EADDRNOTAVAIL);
6501 * Now that we have the ifa we must awaken the iterator with this
6504 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6506 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6509 /* Now incr the count and int wi structure */
6510 SCTP_INCR_LADDR_COUNT();
6511 memset(wi, 0, sizeof(*wi));
6512 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6514 wi->action = SCTP_SET_PRIM_ADDR;
6515 atomic_add_int(&ifa->refcount, 1);
6517 /* Now add it to the work queue */
6518 SCTP_WQ_ADDR_LOCK();
6520 * Should this really be a tailq? As it is we will process the
6523 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6524 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6525 (struct sctp_inpcb *)NULL,
6526 (struct sctp_tcb *)NULL,
6527 (struct sctp_nets *)NULL);
6528 SCTP_WQ_ADDR_UNLOCK();
6533 sctp_soreceive(struct socket *so,
6534 struct sockaddr **psa,
6537 struct mbuf **controlp,
6541 uint8_t sockbuf[256];
6542 struct sockaddr *from;
6543 struct sctp_extrcvinfo sinfo;
6544 int filling_sinfo = 1;
6546 struct sctp_inpcb *inp;
6548 inp = (struct sctp_inpcb *)so->so_pcb;
6549 /* pickup the assoc we are reading from */
6551 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6554 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6555 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6556 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6557 (controlp == NULL)) {
6558 /* user does not want the sndrcv ctl */
6562 from = (struct sockaddr *)sockbuf;
6563 fromlen = sizeof(sockbuf);
6570 if (filling_sinfo) {
6571 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6573 if (flagsp != NULL) {
6578 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, &flags,
6579 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6580 if (flagsp != NULL) {
6583 if (controlp != NULL) {
6584 /* copy back the sinfo in a CMSG format */
6585 if (filling_sinfo && ((flags & MSG_NOTIFICATION) == 0)) {
6586 *controlp = sctp_build_ctl_nchunk(inp,
6587 (struct sctp_sndrcvinfo *)&sinfo);
6593 /* copy back the address info */
6594 if (from && from->sa_len) {
6595 *psa = sodupsockaddr(from, M_NOWAIT);
6604 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6605 int totaddr, int *error)
6609 struct sctp_inpcb *inp;
6610 struct sockaddr *sa;
6613 struct sockaddr_in *sin;
6616 struct sockaddr_in6 *sin6;
6620 inp = stcb->sctp_ep;
6622 for (i = 0; i < totaddr; i++) {
6623 switch (sa->sa_family) {
6626 incr = sizeof(struct sockaddr_in);
6627 sin = (struct sockaddr_in *)sa;
6628 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6629 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6630 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6631 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6632 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6633 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6637 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6638 SCTP_DONOT_SETSCOPE,
6639 SCTP_ADDR_IS_CONFIRMED)) {
6640 /* assoc gone no un-lock */
6641 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6642 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6643 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6652 incr = sizeof(struct sockaddr_in6);
6653 sin6 = (struct sockaddr_in6 *)sa;
6654 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6655 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6656 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6657 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6658 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6662 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6663 SCTP_DONOT_SETSCOPE,
6664 SCTP_ADDR_IS_CONFIRMED)) {
6665 /* assoc gone no un-lock */
6666 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6667 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6668 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6678 sa = (struct sockaddr *)((caddr_t)sa + incr);
6685 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6686 unsigned int totaddr,
6687 unsigned int *num_v4, unsigned int *num_v6,
6690 struct sockaddr *sa;
6691 struct sctp_tcb *stcb;
6692 unsigned int incr, at, i;
6696 *num_v6 = *num_v4 = 0;
6697 /* account and validate addresses */
6701 for (i = 0; i < totaddr; i++) {
6702 if (at + sizeof(struct sockaddr) > limit) {
6705 switch (sa->sa_family) {
6708 incr = (unsigned int)sizeof(struct sockaddr_in);
6709 if (sa->sa_len != incr) {
6718 struct sockaddr_in6 *sin6;
6720 incr = (unsigned int)sizeof(struct sockaddr_in6);
6721 if (sa->sa_len != incr) {
6724 sin6 = (struct sockaddr_in6 *)sa;
6725 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6726 /* Must be non-mapped for connectx */
6736 if ((at + incr) > limit) {
6739 SCTP_INP_INCR_REF(inp);
6740 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6742 SCTP_TCB_UNLOCK(stcb);
6745 SCTP_INP_DECR_REF(inp);
6748 sa = (struct sockaddr *)((caddr_t)sa + incr);
6754 * sctp_bindx(ADD) for one address.
6755 * assumes all arguments are valid/checked by caller.
6758 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6759 struct sockaddr *sa, uint32_t vrf_id, int *error,
6762 #if defined(INET) && defined(INET6)
6763 struct sockaddr_in sin;
6766 struct sockaddr_in6 *sin6;
6769 struct sockaddr_in *sinp;
6771 struct sockaddr *addr_to_use;
6772 struct sctp_inpcb *lep;
6775 /* see if we're bound all already! */
6776 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6777 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6781 switch (sa->sa_family) {
6784 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6785 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6789 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6790 /* can only bind v6 on PF_INET6 sockets */
6791 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6795 sin6 = (struct sockaddr_in6 *)sa;
6796 port = sin6->sin6_port;
6798 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6799 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6800 SCTP_IPV6_V6ONLY(inp)) {
6801 /* can't bind v4-mapped on PF_INET sockets */
6802 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6806 in6_sin6_2_sin(&sin, sin6);
6807 addr_to_use = (struct sockaddr *)&sin;
6818 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6819 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6823 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6824 SCTP_IPV6_V6ONLY(inp)) {
6825 /* can't bind v4 on PF_INET sockets */
6826 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6830 sinp = (struct sockaddr_in *)sa;
6831 port = sinp->sin_port;
6836 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6840 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6842 /* Can't get proc for Net/Open BSD */
6843 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6847 *error = sctp_inpcb_bind(so, addr_to_use, NULL, p);
6850 /* Validate the incoming port. */
6851 if ((port != 0) && (port != inp->sctp_lport)) {
6852 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6856 lep = sctp_pcb_findep(addr_to_use, 1, 0, vrf_id);
6858 /* add the address */
6859 *error = sctp_addr_mgmt_ep_sa(inp, addr_to_use,
6860 SCTP_ADD_IP_ADDRESS, vrf_id);
6863 *error = EADDRINUSE;
6865 SCTP_INP_DECR_REF(lep);
6870 * sctp_bindx(DELETE) for one address.
6871 * assumes all arguments are valid/checked by caller.
6874 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6875 struct sockaddr *sa, uint32_t vrf_id, int *error)
6877 struct sockaddr *addr_to_use;
6878 #if defined(INET) && defined(INET6)
6879 struct sockaddr_in6 *sin6;
6880 struct sockaddr_in sin;
6883 /* see if we're bound all already! */
6884 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6885 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6889 switch (sa->sa_family) {
6892 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6893 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6897 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6898 /* can only bind v6 on PF_INET6 sockets */
6899 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6904 sin6 = (struct sockaddr_in6 *)sa;
6905 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6906 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6907 SCTP_IPV6_V6ONLY(inp)) {
6908 /* can't bind mapped-v4 on PF_INET sockets */
6909 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6913 in6_sin6_2_sin(&sin, sin6);
6914 addr_to_use = (struct sockaddr *)&sin;
6925 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6926 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6930 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6931 SCTP_IPV6_V6ONLY(inp)) {
6932 /* can't bind v4 on PF_INET sockets */
6933 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6941 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6945 /* No lock required mgmt_ep_sa does its own locking. */
6946 *error = sctp_addr_mgmt_ep_sa(inp, addr_to_use, SCTP_DEL_IP_ADDRESS,
6951 * returns the valid local address count for an assoc, taking into account
6955 sctp_local_addr_count(struct sctp_tcb *stcb)
6959 int ipv4_local_scope, ipv4_addr_legal;
6962 int local_scope, site_scope, ipv6_addr_legal;
6964 struct sctp_vrf *vrf;
6965 struct sctp_ifn *sctp_ifn;
6966 struct sctp_ifa *sctp_ifa;
6969 /* Turn on all the appropriate scopes */
6970 loopback_scope = stcb->asoc.scope.loopback_scope;
6972 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6973 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6976 local_scope = stcb->asoc.scope.local_scope;
6977 site_scope = stcb->asoc.scope.site_scope;
6978 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6980 SCTP_IPI_ADDR_RLOCK();
6981 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6983 /* no vrf, no addresses */
6984 SCTP_IPI_ADDR_RUNLOCK();
6988 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6990 * bound all case: go through all ifns on the vrf
6992 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6993 if ((loopback_scope == 0) &&
6994 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6997 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6998 if (sctp_is_addr_restricted(stcb, sctp_ifa))
7000 switch (sctp_ifa->address.sa.sa_family) {
7003 if (ipv4_addr_legal) {
7004 struct sockaddr_in *sin;
7006 sin = &sctp_ifa->address.sin;
7007 if (sin->sin_addr.s_addr == 0) {
7014 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
7015 &sin->sin_addr) != 0) {
7018 if ((ipv4_local_scope == 0) &&
7019 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
7022 /* count this one */
7031 if (ipv6_addr_legal) {
7032 struct sockaddr_in6 *sin6;
7034 sin6 = &sctp_ifa->address.sin6;
7035 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
7038 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
7039 &sin6->sin6_addr) != 0) {
7042 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
7043 if (local_scope == 0)
7045 if (sin6->sin6_scope_id == 0) {
7046 if (sa6_recoverscope(sin6) != 0)
7059 if ((site_scope == 0) &&
7060 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
7063 /* count this one */
7078 struct sctp_laddr *laddr;
7080 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
7082 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
7085 /* count this one */
7089 SCTP_IPI_ADDR_RUNLOCK();
7093 #if defined(SCTP_LOCAL_TRACE_BUF)
7096 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)
7098 uint32_t saveindex, newindex;
7101 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
7102 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
7105 newindex = saveindex + 1;
7107 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
7108 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
7111 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
7112 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
7113 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
7114 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
7115 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
7116 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
7117 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
7118 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
7123 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
7124 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
7128 struct ip6_hdr *ip6;
7130 struct mbuf *sp, *last;
7131 struct udphdr *uhdr;
7134 if ((m->m_flags & M_PKTHDR) == 0) {
7135 /* Can't handle one that is not a pkt hdr */
7138 /* Pull the src port */
7139 iph = mtod(m, struct ip *);
7140 uhdr = (struct udphdr *)((caddr_t)iph + off);
7141 port = uhdr->uh_sport;
7143 * Split out the mbuf chain. Leave the IP header in m, place the
7146 sp = m_split(m, off, M_NOWAIT);
7148 /* Gak, drop packet, we can't do a split */
7151 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
7152 /* Gak, packet can't have an SCTP header in it - too small */
7156 /* Now pull up the UDP header and SCTP header together */
7157 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
7159 /* Gak pullup failed */
7162 /* Trim out the UDP header */
7163 m_adj(sp, sizeof(struct udphdr));
7165 /* Now reconstruct the mbuf chain */
7166 for (last = m; last->m_next; last = last->m_next);
7168 m->m_pkthdr.len += sp->m_pkthdr.len;
7170 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
7171 * checksum and it was valid. Since CSUM_DATA_VALID ==
7172 * CSUM_SCTP_VALID this would imply that the HW also verified the
7173 * SCTP checksum. Therefore, clear the bit.
7175 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
7176 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
7178 if_name(m->m_pkthdr.rcvif),
7179 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
7180 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
7181 iph = mtod(m, struct ip *);
7182 switch (iph->ip_v) {
7185 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
7186 sctp_input_with_port(m, off, port);
7190 case IPV6_VERSION >> 4:
7191 ip6 = mtod(m, struct ip6_hdr *);
7192 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
7193 sctp6_input_with_port(&m, &off, port);
7207 sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED)
7209 struct ip *outer_ip, *inner_ip;
7213 struct sctp_inpcb *inp;
7214 struct sctp_tcb *stcb;
7215 struct sctp_nets *net;
7216 struct sctp_init_chunk *ch;
7217 struct sockaddr_in src, dst;
7220 inner_ip = (struct ip *)vip;
7221 icmp = (struct icmp *)((caddr_t)inner_ip -
7222 (sizeof(struct icmp) - sizeof(struct ip)));
7223 outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
7224 if (ntohs(outer_ip->ip_len) <
7225 sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
7228 udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
7229 sh = (struct sctphdr *)(udp + 1);
7230 memset(&src, 0, sizeof(struct sockaddr_in));
7231 src.sin_family = AF_INET;
7232 src.sin_len = sizeof(struct sockaddr_in);
7233 src.sin_port = sh->src_port;
7234 src.sin_addr = inner_ip->ip_src;
7235 memset(&dst, 0, sizeof(struct sockaddr_in));
7236 dst.sin_family = AF_INET;
7237 dst.sin_len = sizeof(struct sockaddr_in);
7238 dst.sin_port = sh->dest_port;
7239 dst.sin_addr = inner_ip->ip_dst;
7241 * 'dst' holds the dest of the packet that failed to be sent. 'src'
7242 * holds our local endpoint address. Thus we reverse the dst and the
7243 * src in the lookup.
7247 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7248 (struct sockaddr *)&src,
7250 SCTP_DEFAULT_VRFID);
7251 if ((stcb != NULL) &&
7254 /* Check the UDP port numbers */
7255 if ((udp->uh_dport != net->port) ||
7256 (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7257 SCTP_TCB_UNLOCK(stcb);
7260 /* Check the verification tag */
7261 if (ntohl(sh->v_tag) != 0) {
7263 * This must be the verification tag used for
7264 * sending out packets. We don't consider packets
7265 * reflecting the verification tag.
7267 if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
7268 SCTP_TCB_UNLOCK(stcb);
7272 if (ntohs(outer_ip->ip_len) >=
7274 8 + (inner_ip->ip_hl << 2) + 8 + 20) {
7276 * In this case we can check if we got an
7277 * INIT chunk and if the initiate tag
7280 ch = (struct sctp_init_chunk *)(sh + 1);
7281 if ((ch->ch.chunk_type != SCTP_INITIATION) ||
7282 (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
7283 SCTP_TCB_UNLOCK(stcb);
7287 SCTP_TCB_UNLOCK(stcb);
7291 type = icmp->icmp_type;
7292 code = icmp->icmp_code;
7293 if ((type == ICMP_UNREACH) &&
7294 (code == ICMP_UNREACH_PORT)) {
7295 code = ICMP_UNREACH_PROTOCOL;
7297 sctp_notify(inp, stcb, net, type, code,
7298 ntohs(inner_ip->ip_len),
7299 (uint32_t)ntohs(icmp->icmp_nextmtu));
7301 if ((stcb == NULL) && (inp != NULL)) {
7302 /* reduce ref-count */
7303 SCTP_INP_WLOCK(inp);
7304 SCTP_INP_DECR_REF(inp);
7305 SCTP_INP_WUNLOCK(inp);
7308 SCTP_TCB_UNLOCK(stcb);
7317 sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED)
7319 struct ip6ctlparam *ip6cp;
7320 struct sctp_inpcb *inp;
7321 struct sctp_tcb *stcb;
7322 struct sctp_nets *net;
7325 struct sockaddr_in6 src, dst;
7328 ip6cp = (struct ip6ctlparam *)d;
7330 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid.
7332 if (ip6cp->ip6c_m == NULL) {
7336 * Check if we can safely examine the ports and the verification tag
7337 * of the SCTP common header.
7339 if (ip6cp->ip6c_m->m_pkthdr.len <
7340 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) {
7343 /* Copy out the UDP header. */
7344 memset(&udp, 0, sizeof(struct udphdr));
7345 m_copydata(ip6cp->ip6c_m,
7347 sizeof(struct udphdr),
7349 /* Copy out the port numbers and the verification tag. */
7350 memset(&sh, 0, sizeof(struct sctphdr));
7351 m_copydata(ip6cp->ip6c_m,
7352 ip6cp->ip6c_off + sizeof(struct udphdr),
7353 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
7355 memset(&src, 0, sizeof(struct sockaddr_in6));
7356 src.sin6_family = AF_INET6;
7357 src.sin6_len = sizeof(struct sockaddr_in6);
7358 src.sin6_port = sh.src_port;
7359 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
7360 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7363 memset(&dst, 0, sizeof(struct sockaddr_in6));
7364 dst.sin6_family = AF_INET6;
7365 dst.sin6_len = sizeof(struct sockaddr_in6);
7366 dst.sin6_port = sh.dest_port;
7367 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
7368 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7373 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7374 (struct sockaddr *)&src,
7375 &inp, &net, 1, SCTP_DEFAULT_VRFID);
7376 if ((stcb != NULL) &&
7379 /* Check the UDP port numbers */
7380 if ((udp.uh_dport != net->port) ||
7381 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7382 SCTP_TCB_UNLOCK(stcb);
7385 /* Check the verification tag */
7386 if (ntohl(sh.v_tag) != 0) {
7388 * This must be the verification tag used for
7389 * sending out packets. We don't consider packets
7390 * reflecting the verification tag.
7392 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
7393 SCTP_TCB_UNLOCK(stcb);
7397 if (ip6cp->ip6c_m->m_pkthdr.len >=
7398 ip6cp->ip6c_off + sizeof(struct udphdr) +
7399 sizeof(struct sctphdr) +
7400 sizeof(struct sctp_chunkhdr) +
7401 offsetof(struct sctp_init, a_rwnd)) {
7403 * In this case we can check if we got an
7404 * INIT chunk and if the initiate tag
7407 uint32_t initiate_tag;
7410 m_copydata(ip6cp->ip6c_m,
7412 sizeof(struct udphdr) +
7413 sizeof(struct sctphdr),
7415 (caddr_t)&chunk_type);
7416 m_copydata(ip6cp->ip6c_m,
7418 sizeof(struct udphdr) +
7419 sizeof(struct sctphdr) +
7420 sizeof(struct sctp_chunkhdr),
7422 (caddr_t)&initiate_tag);
7423 if ((chunk_type != SCTP_INITIATION) ||
7424 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
7425 SCTP_TCB_UNLOCK(stcb);
7429 SCTP_TCB_UNLOCK(stcb);
7433 type = ip6cp->ip6c_icmp6->icmp6_type;
7434 code = ip6cp->ip6c_icmp6->icmp6_code;
7435 if ((type == ICMP6_DST_UNREACH) &&
7436 (code == ICMP6_DST_UNREACH_NOPORT)) {
7437 type = ICMP6_PARAM_PROB;
7438 code = ICMP6_PARAMPROB_NEXTHEADER;
7440 sctp6_notify(inp, stcb, net, type, code,
7441 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
7443 if ((stcb == NULL) && (inp != NULL)) {
7444 /* reduce inp's ref-count */
7445 SCTP_INP_WLOCK(inp);
7446 SCTP_INP_DECR_REF(inp);
7447 SCTP_INP_WUNLOCK(inp);
7450 SCTP_TCB_UNLOCK(stcb);
7457 sctp_over_udp_stop(void)
7460 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7464 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7465 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7466 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7470 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7471 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7472 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7478 sctp_over_udp_start(void)
7483 struct sockaddr_in sin;
7486 struct sockaddr_in6 sin6;
7489 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7492 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7493 if (ntohs(port) == 0) {
7494 /* Must have a port set */
7498 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7499 /* Already running -- must stop first */
7504 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7505 /* Already running -- must stop first */
7510 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7511 SOCK_DGRAM, IPPROTO_UDP,
7512 curthread->td_ucred, curthread))) {
7513 sctp_over_udp_stop();
7516 /* Call the special UDP hook. */
7517 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7518 sctp_recv_udp_tunneled_packet,
7519 sctp_recv_icmp_tunneled_packet,
7521 sctp_over_udp_stop();
7524 /* Ok, we have a socket, bind it to the port. */
7525 memset(&sin, 0, sizeof(struct sockaddr_in));
7526 sin.sin_len = sizeof(struct sockaddr_in);
7527 sin.sin_family = AF_INET;
7528 sin.sin_port = htons(port);
7529 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7530 (struct sockaddr *)&sin, curthread))) {
7531 sctp_over_udp_stop();
7536 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7537 SOCK_DGRAM, IPPROTO_UDP,
7538 curthread->td_ucred, curthread))) {
7539 sctp_over_udp_stop();
7542 /* Call the special UDP hook. */
7543 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7544 sctp_recv_udp_tunneled_packet,
7545 sctp_recv_icmp6_tunneled_packet,
7547 sctp_over_udp_stop();
7550 /* Ok, we have a socket, bind it to the port. */
7551 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7552 sin6.sin6_len = sizeof(struct sockaddr_in6);
7553 sin6.sin6_family = AF_INET6;
7554 sin6.sin6_port = htons(port);
7555 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7556 (struct sockaddr *)&sin6, curthread))) {
7557 sctp_over_udp_stop();
7565 * sctp_min_mtu ()returns the minimum of all non-zero arguments.
7566 * If all arguments are zero, zero is returned.
7569 sctp_min_mtu(uint32_t mtu1, uint32_t mtu2, uint32_t mtu3)
7574 return (min(mtu1, min(mtu2, mtu3)));
7576 return (min(mtu1, mtu2));
7580 return (min(mtu1, mtu3));
7588 return (min(mtu2, mtu3));
7599 sctp_hc_set_mtu(union sctp_sockstore *addr, uint16_t fibnum, uint32_t mtu)
7601 struct in_conninfo inc;
7603 memset(&inc, 0, sizeof(struct in_conninfo));
7604 inc.inc_fibnum = fibnum;
7605 switch (addr->sa.sa_family) {
7608 inc.inc_faddr = addr->sin.sin_addr;
7613 inc.inc_flags |= INC_ISIPV6;
7614 inc.inc6_faddr = addr->sin6.sin6_addr;
7620 tcp_hc_updatemtu(&inc, (u_long)mtu);
7624 sctp_hc_get_mtu(union sctp_sockstore *addr, uint16_t fibnum)
7626 struct in_conninfo inc;
7628 memset(&inc, 0, sizeof(struct in_conninfo));
7629 inc.inc_fibnum = fibnum;
7630 switch (addr->sa.sa_family) {
7633 inc.inc_faddr = addr->sin.sin_addr;
7638 inc.inc_flags |= INC_ISIPV6;
7639 inc.inc6_faddr = addr->sin6.sin6_addr;
7645 return ((uint32_t)tcp_hc_getmtu(&inc));
7649 sctp_set_state(struct sctp_tcb *stcb, int new_state)
7651 #if defined(KDTRACE_HOOKS)
7652 int old_state = stcb->asoc.state;
7655 KASSERT((new_state & ~SCTP_STATE_MASK) == 0,
7656 ("sctp_set_state: Can't set substate (new_state = %x)",
7658 stcb->asoc.state = (stcb->asoc.state & ~SCTP_STATE_MASK) | new_state;
7659 if ((new_state == SCTP_STATE_SHUTDOWN_RECEIVED) ||
7660 (new_state == SCTP_STATE_SHUTDOWN_SENT) ||
7661 (new_state == SCTP_STATE_SHUTDOWN_ACK_SENT)) {
7662 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_SHUTDOWN_PENDING);
7664 #if defined(KDTRACE_HOOKS)
7665 if (((old_state & SCTP_STATE_MASK) != new_state) &&
7666 !(((old_state & SCTP_STATE_MASK) == SCTP_STATE_EMPTY) &&
7667 (new_state == SCTP_STATE_INUSE))) {
7668 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);
7674 sctp_add_substate(struct sctp_tcb *stcb, int substate)
7676 #if defined(KDTRACE_HOOKS)
7677 int old_state = stcb->asoc.state;
7680 KASSERT((substate & SCTP_STATE_MASK) == 0,
7681 ("sctp_add_substate: Can't set state (substate = %x)",
7683 stcb->asoc.state |= substate;
7684 #if defined(KDTRACE_HOOKS)
7685 if (((substate & SCTP_STATE_ABOUT_TO_BE_FREED) &&
7686 ((old_state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) ||
7687 ((substate & SCTP_STATE_SHUTDOWN_PENDING) &&
7688 ((old_state & SCTP_STATE_SHUTDOWN_PENDING) == 0))) {
7689 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);