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 for (i = 0; i < asoc->streamoutcnt; i++) {
1293 * inbound side must be set to 0xffff, also NOTE when we get
1294 * the INIT-ACK back (for INIT sender) we MUST reduce the
1295 * count (streamoutcnt) but first check if we sent to any of
1296 * the upper streams that were dropped (if some were). Those
1297 * that were dropped must be notified to the upper layer as
1300 TAILQ_INIT(&asoc->strmout[i].outqueue);
1301 asoc->ss_functions.sctp_ss_init_stream(stcb, &asoc->strmout[i], NULL);
1302 asoc->strmout[i].chunks_on_queues = 0;
1303 #if defined(SCTP_DETAILED_STR_STATS)
1304 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1305 asoc->strmout[i].abandoned_sent[j] = 0;
1306 asoc->strmout[i].abandoned_unsent[j] = 0;
1309 asoc->strmout[i].abandoned_sent[0] = 0;
1310 asoc->strmout[i].abandoned_unsent[0] = 0;
1312 asoc->strmout[i].next_mid_ordered = 0;
1313 asoc->strmout[i].next_mid_unordered = 0;
1314 asoc->strmout[i].sid = i;
1315 asoc->strmout[i].last_msg_incomplete = 0;
1316 asoc->strmout[i].state = SCTP_STREAM_OPENING;
1318 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1320 /* Now the mapping array */
1321 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1322 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1324 if (asoc->mapping_array == NULL) {
1325 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1326 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1329 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1330 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1332 if (asoc->nr_mapping_array == NULL) {
1333 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1334 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1335 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1338 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1340 /* Now the init of the other outqueues */
1341 TAILQ_INIT(&asoc->free_chunks);
1342 TAILQ_INIT(&asoc->control_send_queue);
1343 TAILQ_INIT(&asoc->asconf_send_queue);
1344 TAILQ_INIT(&asoc->send_queue);
1345 TAILQ_INIT(&asoc->sent_queue);
1346 TAILQ_INIT(&asoc->resetHead);
1347 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1348 TAILQ_INIT(&asoc->asconf_queue);
1349 /* authentication fields */
1350 asoc->authinfo.random = NULL;
1351 asoc->authinfo.active_keyid = 0;
1352 asoc->authinfo.assoc_key = NULL;
1353 asoc->authinfo.assoc_keyid = 0;
1354 asoc->authinfo.recv_key = NULL;
1355 asoc->authinfo.recv_keyid = 0;
1356 LIST_INIT(&asoc->shared_keys);
1357 asoc->marked_retrans = 0;
1358 asoc->port = inp->sctp_ep.port;
1362 asoc->timoshutdown = 0;
1363 asoc->timoheartbeat = 0;
1364 asoc->timocookie = 0;
1365 asoc->timoshutdownack = 0;
1366 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1367 asoc->discontinuity_time = asoc->start_time;
1368 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1369 asoc->abandoned_unsent[i] = 0;
1370 asoc->abandoned_sent[i] = 0;
1373 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1374 * freed later when the association is freed.
1380 sctp_print_mapping_array(struct sctp_association *asoc)
1382 unsigned int i, limit;
1384 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1385 asoc->mapping_array_size,
1386 asoc->mapping_array_base_tsn,
1387 asoc->cumulative_tsn,
1388 asoc->highest_tsn_inside_map,
1389 asoc->highest_tsn_inside_nr_map);
1390 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1391 if (asoc->mapping_array[limit - 1] != 0) {
1395 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1396 for (i = 0; i < limit; i++) {
1397 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1401 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1402 if (asoc->nr_mapping_array[limit - 1]) {
1406 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1407 for (i = 0; i < limit; i++) {
1408 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1415 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1417 /* mapping array needs to grow */
1418 uint8_t *new_array1, *new_array2;
1421 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1422 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1423 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1424 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1425 /* can't get more, forget it */
1426 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1428 SCTP_FREE(new_array1, SCTP_M_MAP);
1431 SCTP_FREE(new_array2, SCTP_M_MAP);
1435 memset(new_array1, 0, new_size);
1436 memset(new_array2, 0, new_size);
1437 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1438 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1439 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1440 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1441 asoc->mapping_array = new_array1;
1442 asoc->nr_mapping_array = new_array2;
1443 asoc->mapping_array_size = new_size;
1448 sctp_iterator_work(struct sctp_iterator *it)
1450 struct epoch_tracker et;
1451 struct sctp_inpcb *tinp;
1452 int iteration_count = 0;
1456 NET_EPOCH_ENTER(et);
1457 SCTP_INP_INFO_RLOCK();
1458 SCTP_ITERATOR_LOCK();
1459 sctp_it_ctl.cur_it = it;
1461 SCTP_INP_RLOCK(it->inp);
1462 SCTP_INP_DECR_REF(it->inp);
1464 if (it->inp == NULL) {
1465 /* iterator is complete */
1467 sctp_it_ctl.cur_it = NULL;
1468 SCTP_ITERATOR_UNLOCK();
1469 SCTP_INP_INFO_RUNLOCK();
1470 if (it->function_atend != NULL) {
1471 (*it->function_atend) (it->pointer, it->val);
1473 SCTP_FREE(it, SCTP_M_ITER);
1481 SCTP_INP_RLOCK(it->inp);
1483 while (((it->pcb_flags) &&
1484 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1485 ((it->pcb_features) &&
1486 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1487 /* endpoint flags or features don't match, so keep looking */
1488 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1489 SCTP_INP_RUNLOCK(it->inp);
1490 goto done_with_iterator;
1493 it->inp = LIST_NEXT(it->inp, sctp_list);
1495 SCTP_INP_RUNLOCK(tinp);
1496 if (it->inp == NULL) {
1497 goto done_with_iterator;
1499 SCTP_INP_RLOCK(it->inp);
1501 /* now go through each assoc which is in the desired state */
1502 if (it->done_current_ep == 0) {
1503 if (it->function_inp != NULL)
1504 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1505 it->done_current_ep = 1;
1507 if (it->stcb == NULL) {
1508 /* run the per instance function */
1509 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1511 if ((inp_skip) || it->stcb == NULL) {
1512 if (it->function_inp_end != NULL) {
1513 inp_skip = (*it->function_inp_end) (it->inp,
1517 SCTP_INP_RUNLOCK(it->inp);
1521 SCTP_TCB_LOCK(it->stcb);
1522 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1523 /* not in the right state... keep looking */
1524 SCTP_TCB_UNLOCK(it->stcb);
1527 /* see if we have limited out the iterator loop */
1529 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1530 /* Pause to let others grab the lock */
1531 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1532 SCTP_TCB_UNLOCK(it->stcb);
1533 SCTP_INP_INCR_REF(it->inp);
1534 SCTP_INP_RUNLOCK(it->inp);
1535 SCTP_ITERATOR_UNLOCK();
1536 SCTP_INP_INFO_RUNLOCK();
1537 SCTP_INP_INFO_RLOCK();
1538 SCTP_ITERATOR_LOCK();
1539 if (sctp_it_ctl.iterator_flags) {
1540 /* We won't be staying here */
1541 SCTP_INP_DECR_REF(it->inp);
1542 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1543 if (sctp_it_ctl.iterator_flags &
1544 SCTP_ITERATOR_STOP_CUR_IT) {
1545 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1546 goto done_with_iterator;
1548 if (sctp_it_ctl.iterator_flags &
1549 SCTP_ITERATOR_STOP_CUR_INP) {
1550 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1553 /* If we reach here huh? */
1554 SCTP_PRINTF("Unknown it ctl flag %x\n",
1555 sctp_it_ctl.iterator_flags);
1556 sctp_it_ctl.iterator_flags = 0;
1558 SCTP_INP_RLOCK(it->inp);
1559 SCTP_INP_DECR_REF(it->inp);
1560 SCTP_TCB_LOCK(it->stcb);
1561 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1562 iteration_count = 0;
1564 KASSERT(it->inp == it->stcb->sctp_ep,
1565 ("%s: stcb %p does not belong to inp %p, but inp %p",
1566 __func__, it->stcb, it->inp, it->stcb->sctp_ep));
1568 /* run function on this one */
1569 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1572 * we lie here, it really needs to have its own type but
1573 * first I must verify that this won't effect things :-0
1575 if (it->no_chunk_output == 0)
1576 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1578 SCTP_TCB_UNLOCK(it->stcb);
1580 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1581 if (it->stcb == NULL) {
1582 /* Run last function */
1583 if (it->function_inp_end != NULL) {
1584 inp_skip = (*it->function_inp_end) (it->inp,
1590 SCTP_INP_RUNLOCK(it->inp);
1592 /* done with all assocs on this endpoint, move on to next endpoint */
1593 it->done_current_ep = 0;
1594 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1597 it->inp = LIST_NEXT(it->inp, sctp_list);
1600 if (it->inp == NULL) {
1601 goto done_with_iterator;
1603 goto select_a_new_ep;
1607 sctp_iterator_worker(void)
1609 struct sctp_iterator *it;
1611 /* This function is called with the WQ lock in place */
1612 sctp_it_ctl.iterator_running = 1;
1613 while ((it = TAILQ_FIRST(&sctp_it_ctl.iteratorhead)) != NULL) {
1614 /* now lets work on this one */
1615 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1616 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1617 CURVNET_SET(it->vn);
1618 sctp_iterator_work(it);
1620 SCTP_IPI_ITERATOR_WQ_LOCK();
1621 /* sa_ignore FREED_MEMORY */
1623 sctp_it_ctl.iterator_running = 0;
1628 sctp_handle_addr_wq(void)
1630 /* deal with the ADDR wq from the rtsock calls */
1631 struct sctp_laddr *wi, *nwi;
1632 struct sctp_asconf_iterator *asc;
1634 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1635 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1637 /* Try later, no memory */
1638 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1639 (struct sctp_inpcb *)NULL,
1640 (struct sctp_tcb *)NULL,
1641 (struct sctp_nets *)NULL);
1644 LIST_INIT(&asc->list_of_work);
1647 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1648 LIST_REMOVE(wi, sctp_nxt_addr);
1649 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1653 if (asc->cnt == 0) {
1654 SCTP_FREE(asc, SCTP_M_ASC_IT);
1658 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
1659 sctp_asconf_iterator_stcb,
1660 NULL, /* No ep end for boundall */
1661 SCTP_PCB_FLAGS_BOUNDALL,
1662 SCTP_PCB_ANY_FEATURES,
1663 SCTP_ASOC_ANY_STATE,
1665 sctp_asconf_iterator_end, NULL, 0);
1667 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
1669 * Freeing if we are stopping or put back on the
1672 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
1673 sctp_asconf_iterator_end(asc, 0);
1675 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
1676 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
1678 SCTP_FREE(asc, SCTP_M_ASC_IT);
1685 * The following table shows which pointers for the inp, stcb, or net are
1686 * stored for each timer after it was started.
1688 *|Name |Timer |inp |stcb|net |
1689 *|-----------------------------|-----------------------------|----|----|----|
1690 *|SCTP_TIMER_TYPE_SEND |net->rxt_timer |Yes |Yes |Yes |
1691 *|SCTP_TIMER_TYPE_INIT |net->rxt_timer |Yes |Yes |Yes |
1692 *|SCTP_TIMER_TYPE_RECV |stcb->asoc.dack_timer |Yes |Yes |No |
1693 *|SCTP_TIMER_TYPE_SHUTDOWN |net->rxt_timer |Yes |Yes |Yes |
1694 *|SCTP_TIMER_TYPE_HEARTBEAT |net->hb_timer |Yes |Yes |Yes |
1695 *|SCTP_TIMER_TYPE_COOKIE |net->rxt_timer |Yes |Yes |Yes |
1696 *|SCTP_TIMER_TYPE_NEWCOOKIE |inp->sctp_ep.signature_change|Yes |No |No |
1697 *|SCTP_TIMER_TYPE_PATHMTURAISE |net->pmtu_timer |Yes |Yes |Yes |
1698 *|SCTP_TIMER_TYPE_SHUTDOWNACK |net->rxt_timer |Yes |Yes |Yes |
1699 *|SCTP_TIMER_TYPE_ASCONF |stcb->asoc.asconf_timer |Yes |Yes |Yes |
1700 *|SCTP_TIMER_TYPE_SHUTDOWNGUARD|stcb->asoc.shut_guard_timer |Yes |Yes |No |
1701 *|SCTP_TIMER_TYPE_AUTOCLOSE |stcb->asoc.autoclose_timer |Yes |Yes |No |
1702 *|SCTP_TIMER_TYPE_STRRESET |stcb->asoc.strreset_timer |Yes |Yes |No |
1703 *|SCTP_TIMER_TYPE_INPKILL |inp->sctp_ep.signature_change|Yes |No |No |
1704 *|SCTP_TIMER_TYPE_ASOCKILL |stcb->asoc.strreset_timer |Yes |Yes |No |
1705 *|SCTP_TIMER_TYPE_ADDR_WQ |SCTP_BASE_INFO(addr_wq_timer)|No |No |No |
1706 *|SCTP_TIMER_TYPE_PRIM_DELETED |stcb->asoc.delete_prim_timer |Yes |Yes |No |
1710 sctp_timeout_handler(void *t)
1712 struct epoch_tracker et;
1714 struct sctp_inpcb *inp;
1715 struct sctp_tcb *stcb;
1716 struct sctp_nets *net;
1717 struct sctp_timer *tmr;
1718 struct mbuf *op_err;
1721 bool did_output, released_asoc_reference;
1724 * If inp, stcb or net are not NULL, then references to these were
1725 * added when the timer was started, and must be released before
1726 * this function returns.
1728 tmr = (struct sctp_timer *)t;
1729 inp = (struct sctp_inpcb *)tmr->ep;
1730 stcb = (struct sctp_tcb *)tmr->tcb;
1731 net = (struct sctp_nets *)tmr->net;
1732 CURVNET_SET((struct vnet *)tmr->vnet);
1733 NET_EPOCH_ENTER(et);
1734 released_asoc_reference = false;
1736 #ifdef SCTP_AUDITING_ENABLED
1737 sctp_audit_log(0xF0, (uint8_t)tmr->type);
1738 sctp_auditing(3, inp, stcb, net);
1741 /* sanity checks... */
1742 KASSERT(tmr->self == NULL || tmr->self == tmr,
1743 ("sctp_timeout_handler: tmr->self corrupted"));
1744 KASSERT(SCTP_IS_TIMER_TYPE_VALID(tmr->type),
1745 ("sctp_timeout_handler: invalid timer type %d", tmr->type));
1747 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
1748 ("sctp_timeout_handler of type %d: inp = %p, stcb->sctp_ep %p",
1749 type, stcb, stcb->sctp_ep));
1750 tmr->stopped_from = 0xa001;
1751 if ((stcb != NULL) && (stcb->asoc.state == SCTP_STATE_EMPTY)) {
1752 SCTPDBG(SCTP_DEBUG_TIMER2,
1753 "Timer type %d handler exiting due to CLOSED association.\n",
1757 tmr->stopped_from = 0xa002;
1758 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d goes off.\n", type);
1759 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1760 SCTPDBG(SCTP_DEBUG_TIMER2,
1761 "Timer type %d handler exiting due to not being active.\n",
1766 tmr->stopped_from = 0xa003;
1768 SCTP_TCB_LOCK(stcb);
1770 * Release reference so that association can be freed if
1771 * necessary below. This is safe now that we have acquired
1774 atomic_add_int(&stcb->asoc.refcnt, -1);
1775 released_asoc_reference = true;
1776 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1777 ((stcb->asoc.state == SCTP_STATE_EMPTY) ||
1778 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1779 SCTPDBG(SCTP_DEBUG_TIMER2,
1780 "Timer type %d handler exiting due to CLOSED association.\n",
1784 } else if (inp != NULL) {
1785 SCTP_INP_WLOCK(inp);
1787 SCTP_WQ_ADDR_LOCK();
1790 /* Record in stopped_from which timeout occurred. */
1791 tmr->stopped_from = type;
1792 /* mark as being serviced now */
1793 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1795 * Callout has been rescheduled.
1799 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1801 * Not active, so no action.
1805 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1807 /* call the handler for the appropriate timer type */
1809 case SCTP_TIMER_TYPE_SEND:
1810 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1811 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1812 type, inp, stcb, net));
1813 SCTP_STAT_INCR(sctps_timodata);
1814 stcb->asoc.timodata++;
1815 stcb->asoc.num_send_timers_up--;
1816 if (stcb->asoc.num_send_timers_up < 0) {
1817 stcb->asoc.num_send_timers_up = 0;
1819 SCTP_TCB_LOCK_ASSERT(stcb);
1820 if (sctp_t3rxt_timer(inp, stcb, net)) {
1821 /* no need to unlock on tcb its gone */
1825 SCTP_TCB_LOCK_ASSERT(stcb);
1826 #ifdef SCTP_AUDITING_ENABLED
1827 sctp_auditing(4, inp, stcb, net);
1829 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1831 if ((stcb->asoc.num_send_timers_up == 0) &&
1832 (stcb->asoc.sent_queue_cnt > 0)) {
1833 struct sctp_tmit_chunk *chk;
1836 * Safeguard. If there on some on the sent queue
1837 * somewhere but no timers running something is
1838 * wrong... so we start a timer on the first chunk
1839 * on the send queue on whatever net it is sent to.
1841 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
1842 if (chk->whoTo != NULL) {
1847 sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, chk->whoTo);
1851 case SCTP_TIMER_TYPE_INIT:
1852 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1853 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1854 type, inp, stcb, net));
1855 SCTP_STAT_INCR(sctps_timoinit);
1856 stcb->asoc.timoinit++;
1857 if (sctp_t1init_timer(inp, stcb, net)) {
1858 /* no need to unlock on tcb its gone */
1863 case SCTP_TIMER_TYPE_RECV:
1864 KASSERT(inp != NULL && stcb != NULL && net == NULL,
1865 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1866 type, inp, stcb, net));
1867 SCTP_STAT_INCR(sctps_timosack);
1868 stcb->asoc.timosack++;
1869 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1870 #ifdef SCTP_AUDITING_ENABLED
1871 sctp_auditing(4, inp, stcb, NULL);
1873 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1876 case SCTP_TIMER_TYPE_SHUTDOWN:
1877 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1878 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1879 type, inp, stcb, net));
1880 SCTP_STAT_INCR(sctps_timoshutdown);
1881 stcb->asoc.timoshutdown++;
1882 if (sctp_shutdown_timer(inp, stcb, net)) {
1883 /* no need to unlock on tcb its gone */
1886 #ifdef SCTP_AUDITING_ENABLED
1887 sctp_auditing(4, inp, stcb, net);
1889 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1892 case SCTP_TIMER_TYPE_HEARTBEAT:
1893 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1894 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1895 type, inp, stcb, net));
1896 SCTP_STAT_INCR(sctps_timoheartbeat);
1897 stcb->asoc.timoheartbeat++;
1898 if (sctp_heartbeat_timer(inp, stcb, net)) {
1899 /* no need to unlock on tcb its gone */
1902 #ifdef SCTP_AUDITING_ENABLED
1903 sctp_auditing(4, inp, stcb, net);
1905 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1906 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1907 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1913 case SCTP_TIMER_TYPE_COOKIE:
1914 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1915 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1916 type, inp, stcb, net));
1917 SCTP_STAT_INCR(sctps_timocookie);
1918 stcb->asoc.timocookie++;
1919 if (sctp_cookie_timer(inp, stcb, net)) {
1920 /* no need to unlock on tcb its gone */
1923 #ifdef SCTP_AUDITING_ENABLED
1924 sctp_auditing(4, inp, stcb, net);
1927 * We consider T3 and Cookie timer pretty much the same with
1928 * respect to where from in chunk_output.
1930 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1933 case SCTP_TIMER_TYPE_NEWCOOKIE:
1934 KASSERT(inp != NULL && stcb == NULL && net == NULL,
1935 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1936 type, inp, stcb, net));
1937 SCTP_STAT_INCR(sctps_timosecret);
1938 (void)SCTP_GETTIME_TIMEVAL(&tv);
1939 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1940 inp->sctp_ep.last_secret_number =
1941 inp->sctp_ep.current_secret_number;
1942 inp->sctp_ep.current_secret_number++;
1943 if (inp->sctp_ep.current_secret_number >=
1944 SCTP_HOW_MANY_SECRETS) {
1945 inp->sctp_ep.current_secret_number = 0;
1947 secret = (int)inp->sctp_ep.current_secret_number;
1948 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1949 inp->sctp_ep.secret_key[secret][i] =
1950 sctp_select_initial_TSN(&inp->sctp_ep);
1952 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
1955 case SCTP_TIMER_TYPE_PATHMTURAISE:
1956 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1957 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1958 type, inp, stcb, net));
1959 SCTP_STAT_INCR(sctps_timopathmtu);
1960 sctp_pathmtu_timer(inp, stcb, net);
1963 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1964 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1965 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1966 type, inp, stcb, net));
1967 if (sctp_shutdownack_timer(inp, stcb, net)) {
1968 /* no need to unlock on tcb its gone */
1971 SCTP_STAT_INCR(sctps_timoshutdownack);
1972 stcb->asoc.timoshutdownack++;
1973 #ifdef SCTP_AUDITING_ENABLED
1974 sctp_auditing(4, inp, stcb, net);
1976 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1979 case SCTP_TIMER_TYPE_ASCONF:
1980 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1981 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1982 type, inp, stcb, net));
1983 SCTP_STAT_INCR(sctps_timoasconf);
1984 if (sctp_asconf_timer(inp, stcb, net)) {
1985 /* no need to unlock on tcb its gone */
1988 #ifdef SCTP_AUDITING_ENABLED
1989 sctp_auditing(4, inp, stcb, net);
1991 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1994 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1995 KASSERT(inp != NULL && stcb != NULL && net == NULL,
1996 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1997 type, inp, stcb, net));
1998 SCTP_STAT_INCR(sctps_timoshutdownguard);
1999 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
2000 "Shutdown guard timer expired");
2001 sctp_abort_an_association(inp, stcb, op_err, true, SCTP_SO_NOT_LOCKED);
2002 /* no need to unlock on tcb its gone */
2004 case SCTP_TIMER_TYPE_AUTOCLOSE:
2005 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2006 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2007 type, inp, stcb, net));
2008 SCTP_STAT_INCR(sctps_timoautoclose);
2009 sctp_autoclose_timer(inp, stcb);
2010 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
2013 case SCTP_TIMER_TYPE_STRRESET:
2014 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2015 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2016 type, inp, stcb, net));
2017 SCTP_STAT_INCR(sctps_timostrmrst);
2018 if (sctp_strreset_timer(inp, stcb)) {
2019 /* no need to unlock on tcb its gone */
2022 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
2025 case SCTP_TIMER_TYPE_INPKILL:
2026 KASSERT(inp != NULL && stcb == NULL && net == NULL,
2027 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2028 type, inp, stcb, net));
2029 SCTP_STAT_INCR(sctps_timoinpkill);
2031 * special case, take away our increment since WE are the
2034 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
2035 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
2036 SCTP_INP_DECR_REF(inp);
2037 SCTP_INP_WUNLOCK(inp);
2038 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
2039 SCTP_CALLED_FROM_INPKILL_TIMER);
2042 case SCTP_TIMER_TYPE_ASOCKILL:
2043 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2044 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2045 type, inp, stcb, net));
2046 SCTP_STAT_INCR(sctps_timoassockill);
2047 /* Can we free it yet? */
2048 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
2049 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
2050 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
2051 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
2053 * free asoc, always unlocks (or destroy's) so prevent
2054 * duplicate unlock or unlock of a free mtx :-0
2058 case SCTP_TIMER_TYPE_ADDR_WQ:
2059 KASSERT(inp == NULL && stcb == NULL && net == NULL,
2060 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2061 type, inp, stcb, net));
2062 sctp_handle_addr_wq();
2065 case SCTP_TIMER_TYPE_PRIM_DELETED:
2066 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2067 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2068 type, inp, stcb, net));
2069 SCTP_STAT_INCR(sctps_timodelprim);
2070 sctp_delete_prim_timer(inp, stcb);
2075 panic("Unknown timer type %d", type);
2080 #ifdef SCTP_AUDITING_ENABLED
2081 sctp_audit_log(0xF1, (uint8_t)type);
2083 sctp_auditing(5, inp, stcb, net);
2085 if (did_output && (stcb != NULL)) {
2087 * Now we need to clean up the control chunk chain if an
2088 * ECNE is on it. It must be marked as UNSENT again so next
2089 * call will continue to send it until such time that we get
2090 * a CWR, to remove it. It is, however, less likely that we
2091 * will find a ecn echo on the chain though.
2093 sctp_fix_ecn_echo(&stcb->asoc);
2097 SCTP_TCB_UNLOCK(stcb);
2098 } else if (inp != NULL) {
2099 SCTP_INP_WUNLOCK(inp);
2101 SCTP_WQ_ADDR_UNLOCK();
2105 /* These reference counts were incremented in sctp_timer_start(). */
2107 SCTP_INP_DECR_REF(inp);
2109 if ((stcb != NULL) && !released_asoc_reference) {
2110 atomic_add_int(&stcb->asoc.refcnt, -1);
2113 sctp_free_remote_addr(net);
2115 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d handler finished.\n", type);
2121 * The following table shows which parameters must be provided
2122 * when calling sctp_timer_start(). For parameters not being
2123 * provided, NULL must be used.
2125 * |Name |inp |stcb|net |
2126 * |-----------------------------|----|----|----|
2127 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes |
2128 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes |
2129 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No |
2130 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes |
2131 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes |
2132 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes |
2133 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No |
2134 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes |
2135 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes |
2136 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |Yes |
2137 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No |
2138 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No |
2139 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |Yes |
2140 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No |
2141 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No |
2142 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No |
2143 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No |
2148 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2149 struct sctp_nets *net)
2151 struct sctp_timer *tmr;
2153 uint32_t rndval, jitter;
2155 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
2156 ("sctp_timer_start of type %d: inp = %p, stcb->sctp_ep %p",
2157 t_type, stcb, stcb->sctp_ep));
2160 SCTP_TCB_LOCK_ASSERT(stcb);
2161 } else if (inp != NULL) {
2162 SCTP_INP_WLOCK_ASSERT(inp);
2164 SCTP_WQ_ADDR_LOCK_ASSERT();
2168 * Don't restart timer on association that's about to be
2171 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
2172 (t_type != SCTP_TIMER_TYPE_ASOCKILL)) {
2173 SCTPDBG(SCTP_DEBUG_TIMER2,
2174 "Timer type %d not started: inp=%p, stcb=%p, net=%p (stcb deleted).\n",
2175 t_type, inp, stcb, net);
2178 /* Don't restart timer on net that's been removed. */
2179 if (net != NULL && (net->dest_state & SCTP_ADDR_BEING_DELETED)) {
2180 SCTPDBG(SCTP_DEBUG_TIMER2,
2181 "Timer type %d not started: inp=%p, stcb=%p, net=%p (net deleted).\n",
2182 t_type, inp, stcb, net);
2187 case SCTP_TIMER_TYPE_SEND:
2188 /* Here we use the RTO timer. */
2189 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2191 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2192 t_type, inp, stcb, net);
2197 tmr = &net->rxt_timer;
2198 if (net->RTO == 0) {
2199 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2201 to_ticks = sctp_msecs_to_ticks(net->RTO);
2204 case SCTP_TIMER_TYPE_INIT:
2206 * Here we use the INIT timer default usually about 1
2209 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2211 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2212 t_type, inp, stcb, net);
2217 tmr = &net->rxt_timer;
2218 if (net->RTO == 0) {
2219 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2221 to_ticks = sctp_msecs_to_ticks(net->RTO);
2224 case SCTP_TIMER_TYPE_RECV:
2226 * Here we use the Delayed-Ack timer value from the inp,
2227 * ususually about 200ms.
2229 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2231 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2232 t_type, inp, stcb, net);
2237 tmr = &stcb->asoc.dack_timer;
2238 to_ticks = sctp_msecs_to_ticks(stcb->asoc.delayed_ack);
2240 case SCTP_TIMER_TYPE_SHUTDOWN:
2241 /* Here we use the RTO of the destination. */
2242 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2244 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2245 t_type, inp, stcb, net);
2250 tmr = &net->rxt_timer;
2251 if (net->RTO == 0) {
2252 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2254 to_ticks = sctp_msecs_to_ticks(net->RTO);
2257 case SCTP_TIMER_TYPE_HEARTBEAT:
2259 * The net is used here so that we can add in the RTO. Even
2260 * though we use a different timer. We also add the HB timer
2261 * PLUS a random jitter.
2263 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2265 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2266 t_type, inp, stcb, net);
2271 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2272 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2273 SCTPDBG(SCTP_DEBUG_TIMER2,
2274 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n",
2275 t_type, inp, stcb, net);
2278 tmr = &net->hb_timer;
2279 if (net->RTO == 0) {
2280 to_ticks = stcb->asoc.initial_rto;
2282 to_ticks = net->RTO;
2284 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2285 jitter = rndval % to_ticks;
2289 if (jitter < (UINT32_MAX - to_ticks)) {
2292 to_ticks = UINT32_MAX;
2294 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2295 !(net->dest_state & SCTP_ADDR_PF)) {
2296 if (net->heart_beat_delay < (UINT32_MAX - to_ticks)) {
2297 to_ticks += net->heart_beat_delay;
2299 to_ticks = UINT32_MAX;
2303 * Now we must convert the to_ticks that are now in ms to
2306 to_ticks = sctp_msecs_to_ticks(to_ticks);
2308 case SCTP_TIMER_TYPE_COOKIE:
2310 * Here we can use the RTO timer from the network since one
2311 * RTT was complete. If a retransmission happened then we
2312 * will be using the RTO initial value.
2314 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2316 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2317 t_type, inp, stcb, net);
2322 tmr = &net->rxt_timer;
2323 if (net->RTO == 0) {
2324 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2326 to_ticks = sctp_msecs_to_ticks(net->RTO);
2329 case SCTP_TIMER_TYPE_NEWCOOKIE:
2331 * Nothing needed but the endpoint here ususually about 60
2334 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2336 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2337 t_type, inp, stcb, net);
2342 tmr = &inp->sctp_ep.signature_change;
2343 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2345 case SCTP_TIMER_TYPE_PATHMTURAISE:
2347 * Here we use the value found in the EP for PMTUD,
2348 * ususually about 10 minutes.
2350 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2352 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2353 t_type, inp, stcb, net);
2358 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2359 SCTPDBG(SCTP_DEBUG_TIMER2,
2360 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n",
2361 t_type, inp, stcb, net);
2364 tmr = &net->pmtu_timer;
2365 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2367 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2368 /* Here we use the RTO of the destination. */
2369 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2371 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2372 t_type, inp, stcb, net);
2377 tmr = &net->rxt_timer;
2378 if (net->RTO == 0) {
2379 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2381 to_ticks = sctp_msecs_to_ticks(net->RTO);
2384 case SCTP_TIMER_TYPE_ASCONF:
2386 * Here the timer comes from the stcb but its value is from
2389 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2391 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2392 t_type, inp, stcb, net);
2397 tmr = &stcb->asoc.asconf_timer;
2398 if (net->RTO == 0) {
2399 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2401 to_ticks = sctp_msecs_to_ticks(net->RTO);
2404 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2406 * Here we use the endpoints shutdown guard timer usually
2409 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2411 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2412 t_type, inp, stcb, net);
2417 tmr = &stcb->asoc.shut_guard_timer;
2418 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2419 if (stcb->asoc.maxrto < UINT32_MAX / 5) {
2420 to_ticks = sctp_msecs_to_ticks(5 * stcb->asoc.maxrto);
2422 to_ticks = sctp_msecs_to_ticks(UINT32_MAX);
2425 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2428 case SCTP_TIMER_TYPE_AUTOCLOSE:
2429 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2431 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2432 t_type, inp, stcb, net);
2437 tmr = &stcb->asoc.autoclose_timer;
2438 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2440 case SCTP_TIMER_TYPE_STRRESET:
2442 * Here the timer comes from the stcb but its value is from
2445 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2447 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2448 t_type, inp, stcb, net);
2453 tmr = &stcb->asoc.strreset_timer;
2454 if (net->RTO == 0) {
2455 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2457 to_ticks = sctp_msecs_to_ticks(net->RTO);
2460 case SCTP_TIMER_TYPE_INPKILL:
2462 * The inp is setup to die. We re-use the signature_chage
2463 * timer since that has stopped and we are in the GONE
2466 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2468 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2469 t_type, inp, stcb, net);
2474 tmr = &inp->sctp_ep.signature_change;
2475 to_ticks = sctp_msecs_to_ticks(SCTP_INP_KILL_TIMEOUT);
2477 case SCTP_TIMER_TYPE_ASOCKILL:
2478 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2480 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2481 t_type, inp, stcb, net);
2486 tmr = &stcb->asoc.strreset_timer;
2487 to_ticks = sctp_msecs_to_ticks(SCTP_ASOC_KILL_TIMEOUT);
2489 case SCTP_TIMER_TYPE_ADDR_WQ:
2490 if ((inp != NULL) || (stcb != NULL) || (net != NULL)) {
2492 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2493 t_type, inp, stcb, net);
2498 /* Only 1 tick away :-) */
2499 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2500 to_ticks = SCTP_ADDRESS_TICK_DELAY;
2502 case SCTP_TIMER_TYPE_PRIM_DELETED:
2503 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2505 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2506 t_type, inp, stcb, net);
2511 tmr = &stcb->asoc.delete_prim_timer;
2512 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2516 panic("Unknown timer type %d", t_type);
2521 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type));
2522 KASSERT(to_ticks > 0, ("to_ticks == 0 for timer type %d", t_type));
2523 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2525 * We do NOT allow you to have it already running. If it is,
2526 * we leave the current one up unchanged.
2528 SCTPDBG(SCTP_DEBUG_TIMER2,
2529 "Timer type %d already running: inp=%p, stcb=%p, net=%p.\n",
2530 t_type, inp, stcb, net);
2533 /* At this point we can proceed. */
2534 if (t_type == SCTP_TIMER_TYPE_SEND) {
2535 stcb->asoc.num_send_timers_up++;
2537 tmr->stopped_from = 0;
2539 tmr->ep = (void *)inp;
2540 tmr->tcb = (void *)stcb;
2541 if (t_type == SCTP_TIMER_TYPE_STRRESET) {
2544 tmr->net = (void *)net;
2546 tmr->self = (void *)tmr;
2547 tmr->vnet = (void *)curvnet;
2548 tmr->ticks = sctp_get_tick_count();
2549 if (SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr) == 0) {
2550 SCTPDBG(SCTP_DEBUG_TIMER2,
2551 "Timer type %d started: ticks=%u, inp=%p, stcb=%p, net=%p.\n",
2552 t_type, to_ticks, inp, stcb, net);
2554 * If this is a newly scheduled callout, as opposed to a
2555 * rescheduled one, increment relevant reference counts.
2557 if (tmr->ep != NULL) {
2558 SCTP_INP_INCR_REF(inp);
2560 if (tmr->tcb != NULL) {
2561 atomic_add_int(&stcb->asoc.refcnt, 1);
2563 if (tmr->net != NULL) {
2564 atomic_add_int(&net->ref_count, 1);
2568 * This should not happen, since we checked for pending
2571 SCTPDBG(SCTP_DEBUG_TIMER2,
2572 "Timer type %d restarted: ticks=%u, inp=%p, stcb=%p, net=%p.\n",
2573 t_type, to_ticks, inp, stcb, net);
2579 * The following table shows which parameters must be provided
2580 * when calling sctp_timer_stop(). For parameters not being
2581 * provided, NULL must be used.
2583 * |Name |inp |stcb|net |
2584 * |-----------------------------|----|----|----|
2585 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes |
2586 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes |
2587 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No |
2588 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes |
2589 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes |
2590 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes |
2591 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No |
2592 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes |
2593 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes |
2594 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |No |
2595 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No |
2596 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No |
2597 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |No |
2598 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No |
2599 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No |
2600 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No |
2601 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No |
2606 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2607 struct sctp_nets *net, uint32_t from)
2609 struct sctp_timer *tmr;
2611 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
2612 ("sctp_timer_stop of type %d: inp = %p, stcb->sctp_ep %p",
2613 t_type, stcb, stcb->sctp_ep));
2615 SCTP_TCB_LOCK_ASSERT(stcb);
2616 } else if (inp != NULL) {
2617 SCTP_INP_WLOCK_ASSERT(inp);
2619 SCTP_WQ_ADDR_LOCK_ASSERT();
2623 case SCTP_TIMER_TYPE_SEND:
2624 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2626 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2627 t_type, inp, stcb, net);
2632 tmr = &net->rxt_timer;
2634 case SCTP_TIMER_TYPE_INIT:
2635 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2637 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2638 t_type, inp, stcb, net);
2643 tmr = &net->rxt_timer;
2645 case SCTP_TIMER_TYPE_RECV:
2646 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2648 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2649 t_type, inp, stcb, net);
2654 tmr = &stcb->asoc.dack_timer;
2656 case SCTP_TIMER_TYPE_SHUTDOWN:
2657 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2659 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2660 t_type, inp, stcb, net);
2665 tmr = &net->rxt_timer;
2667 case SCTP_TIMER_TYPE_HEARTBEAT:
2668 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2670 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2671 t_type, inp, stcb, net);
2676 tmr = &net->hb_timer;
2678 case SCTP_TIMER_TYPE_COOKIE:
2679 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2681 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2682 t_type, inp, stcb, net);
2687 tmr = &net->rxt_timer;
2689 case SCTP_TIMER_TYPE_NEWCOOKIE:
2690 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2692 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2693 t_type, inp, stcb, net);
2698 tmr = &inp->sctp_ep.signature_change;
2700 case SCTP_TIMER_TYPE_PATHMTURAISE:
2701 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2703 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2704 t_type, inp, stcb, net);
2709 tmr = &net->pmtu_timer;
2711 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2712 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2714 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2715 t_type, inp, stcb, net);
2720 tmr = &net->rxt_timer;
2722 case SCTP_TIMER_TYPE_ASCONF:
2723 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2725 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2726 t_type, inp, stcb, net);
2731 tmr = &stcb->asoc.asconf_timer;
2733 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2734 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2736 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2737 t_type, inp, stcb, net);
2742 tmr = &stcb->asoc.shut_guard_timer;
2744 case SCTP_TIMER_TYPE_AUTOCLOSE:
2745 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2747 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2748 t_type, inp, stcb, net);
2753 tmr = &stcb->asoc.autoclose_timer;
2755 case SCTP_TIMER_TYPE_STRRESET:
2756 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2758 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2759 t_type, inp, stcb, net);
2764 tmr = &stcb->asoc.strreset_timer;
2766 case SCTP_TIMER_TYPE_INPKILL:
2768 * The inp is setup to die. We re-use the signature_chage
2769 * timer since that has stopped and we are in the GONE
2772 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2774 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2775 t_type, inp, stcb, net);
2780 tmr = &inp->sctp_ep.signature_change;
2782 case SCTP_TIMER_TYPE_ASOCKILL:
2783 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2785 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2786 t_type, inp, stcb, net);
2791 tmr = &stcb->asoc.strreset_timer;
2793 case SCTP_TIMER_TYPE_ADDR_WQ:
2794 if ((inp != NULL) || (stcb != NULL) || (net != NULL)) {
2796 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2797 t_type, inp, stcb, net);
2802 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2804 case SCTP_TIMER_TYPE_PRIM_DELETED:
2805 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2807 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2808 t_type, inp, stcb, net);
2813 tmr = &stcb->asoc.delete_prim_timer;
2817 panic("Unknown timer type %d", t_type);
2822 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type));
2823 if ((tmr->type != SCTP_TIMER_TYPE_NONE) &&
2824 (tmr->type != t_type)) {
2826 * Ok we have a timer that is under joint use. Cookie timer
2827 * per chance with the SEND timer. We therefore are NOT
2828 * running the timer that the caller wants stopped. So just
2831 SCTPDBG(SCTP_DEBUG_TIMER2,
2832 "Shared timer type %d not running: inp=%p, stcb=%p, net=%p.\n",
2833 t_type, inp, stcb, net);
2836 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2837 stcb->asoc.num_send_timers_up--;
2838 if (stcb->asoc.num_send_timers_up < 0) {
2839 stcb->asoc.num_send_timers_up = 0;
2843 tmr->stopped_from = from;
2844 if (SCTP_OS_TIMER_STOP(&tmr->timer) == 1) {
2845 KASSERT(tmr->ep == inp,
2846 ("sctp_timer_stop of type %d: inp = %p, tmr->inp = %p",
2847 t_type, inp, tmr->ep));
2848 KASSERT(tmr->tcb == stcb,
2849 ("sctp_timer_stop of type %d: stcb = %p, tmr->stcb = %p",
2850 t_type, stcb, tmr->tcb));
2851 KASSERT(((t_type == SCTP_TIMER_TYPE_ASCONF) && (tmr->net != NULL)) ||
2852 ((t_type != SCTP_TIMER_TYPE_ASCONF) && (tmr->net == net)),
2853 ("sctp_timer_stop of type %d: net = %p, tmr->net = %p",
2854 t_type, net, tmr->net));
2855 SCTPDBG(SCTP_DEBUG_TIMER2,
2856 "Timer type %d stopped: inp=%p, stcb=%p, net=%p.\n",
2857 t_type, inp, stcb, net);
2859 * If the timer was actually stopped, decrement reference
2860 * counts that were incremented in sctp_timer_start().
2862 if (tmr->ep != NULL) {
2863 SCTP_INP_DECR_REF(inp);
2866 if (tmr->tcb != NULL) {
2867 atomic_add_int(&stcb->asoc.refcnt, -1);
2870 if (tmr->net != NULL) {
2872 * Can't use net, since it doesn't work for
2873 * SCTP_TIMER_TYPE_ASCONF.
2875 sctp_free_remote_addr((struct sctp_nets *)tmr->net);
2879 SCTPDBG(SCTP_DEBUG_TIMER2,
2880 "Timer type %d not stopped: inp=%p, stcb=%p, net=%p.\n",
2881 t_type, inp, stcb, net);
2887 sctp_calculate_len(struct mbuf *m)
2894 tlen += SCTP_BUF_LEN(at);
2895 at = SCTP_BUF_NEXT(at);
2901 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2902 struct sctp_association *asoc, uint32_t mtu)
2905 * Reset the P-MTU size on this association, this involves changing
2906 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2907 * allow the DF flag to be cleared.
2909 struct sctp_tmit_chunk *chk;
2910 unsigned int eff_mtu, ovh;
2912 asoc->smallest_mtu = mtu;
2913 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2914 ovh = SCTP_MIN_OVERHEAD;
2916 ovh = SCTP_MIN_V4_OVERHEAD;
2918 eff_mtu = mtu - ovh;
2919 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2920 if (chk->send_size > eff_mtu) {
2921 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2924 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2925 if (chk->send_size > eff_mtu) {
2926 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2932 * Given an association and starting time of the current RTT period, update
2933 * RTO in number of msecs. net should point to the current network.
2934 * Return 1, if an RTO update was performed, return 0 if no update was
2935 * performed due to invalid starting point.
2939 sctp_calculate_rto(struct sctp_tcb *stcb,
2940 struct sctp_association *asoc,
2941 struct sctp_nets *net,
2942 struct timeval *old,
2946 uint64_t rtt_us; /* RTT in us */
2947 int32_t rtt; /* RTT in ms */
2949 int first_measure = 0;
2951 /************************/
2952 /* 1. calculate new RTT */
2953 /************************/
2954 /* get the current time */
2955 if (stcb->asoc.use_precise_time) {
2956 (void)SCTP_GETPTIME_TIMEVAL(&now);
2958 (void)SCTP_GETTIME_TIMEVAL(&now);
2960 if ((old->tv_sec > now.tv_sec) ||
2961 ((old->tv_sec == now.tv_sec) && (old->tv_usec > now.tv_usec))) {
2962 /* The starting point is in the future. */
2965 timevalsub(&now, old);
2966 rtt_us = (uint64_t)1000000 * (uint64_t)now.tv_sec + (uint64_t)now.tv_usec;
2967 if (rtt_us > SCTP_RTO_UPPER_BOUND * 1000) {
2968 /* The RTT is larger than a sane value. */
2971 /* store the current RTT in us */
2973 /* compute rtt in ms */
2974 rtt = (int32_t)(net->rtt / 1000);
2975 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2977 * Tell the CC module that a new update has just occurred
2980 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2983 * Do we need to determine the lan? We do this only on sacks i.e.
2984 * RTT being determined from data not non-data (HB/INIT->INITACK).
2986 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2987 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2988 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2989 net->lan_type = SCTP_LAN_INTERNET;
2991 net->lan_type = SCTP_LAN_LOCAL;
2995 /***************************/
2996 /* 2. update RTTVAR & SRTT */
2997 /***************************/
2999 * Compute the scaled average lastsa and the
3000 * scaled variance lastsv as described in van Jacobson
3001 * Paper "Congestion Avoidance and Control", Annex A.
3003 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
3004 * (net->lastsv >> SCTP_RTT_VAR_SHIFT) is the rttvar
3006 if (net->RTO_measured) {
3007 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
3012 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
3014 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
3015 rto_logging(net, SCTP_LOG_RTTVAR);
3018 /* First RTO measurment */
3019 net->RTO_measured = 1;
3021 net->lastsa = rtt << SCTP_RTT_SHIFT;
3022 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
3023 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
3024 rto_logging(net, SCTP_LOG_INITIAL_RTT);
3027 if (net->lastsv == 0) {
3028 net->lastsv = SCTP_CLOCK_GRANULARITY;
3030 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
3031 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
3032 (stcb->asoc.sat_network_lockout == 0)) {
3033 stcb->asoc.sat_network = 1;
3034 } else if ((!first_measure) && stcb->asoc.sat_network) {
3035 stcb->asoc.sat_network = 0;
3036 stcb->asoc.sat_network_lockout = 1;
3038 /* bound it, per C6/C7 in Section 5.3.1 */
3039 if (new_rto < stcb->asoc.minrto) {
3040 new_rto = stcb->asoc.minrto;
3042 if (new_rto > stcb->asoc.maxrto) {
3043 new_rto = stcb->asoc.maxrto;
3050 * return a pointer to a contiguous piece of data from the given mbuf chain
3051 * starting at 'off' for 'len' bytes. If the desired piece spans more than
3052 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
3053 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
3056 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t *in_ptr)
3062 if ((off < 0) || (len <= 0))
3065 /* find the desired start location */
3066 while ((m != NULL) && (off > 0)) {
3067 if (off < SCTP_BUF_LEN(m))
3069 off -= SCTP_BUF_LEN(m);
3070 m = SCTP_BUF_NEXT(m);
3075 /* is the current mbuf large enough (eg. contiguous)? */
3076 if ((SCTP_BUF_LEN(m) - off) >= len) {
3077 return (mtod(m, caddr_t)+off);
3079 /* else, it spans more than one mbuf, so save a temp copy... */
3080 while ((m != NULL) && (len > 0)) {
3081 count = min(SCTP_BUF_LEN(m) - off, len);
3082 memcpy(ptr, mtod(m, caddr_t)+off, count);
3086 m = SCTP_BUF_NEXT(m);
3088 if ((m == NULL) && (len > 0))
3091 return ((caddr_t)in_ptr);
3095 struct sctp_paramhdr *
3096 sctp_get_next_param(struct mbuf *m,
3098 struct sctp_paramhdr *pull,
3101 /* This just provides a typed signature to Peter's Pull routine */
3102 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
3107 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
3109 struct mbuf *m_last;
3115 if (padlen <= M_TRAILINGSPACE(m)) {
3117 * The easy way. We hope the majority of the time we hit
3122 /* Hard way we must grow the mbuf chain */
3123 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
3124 if (m_last == NULL) {
3127 SCTP_BUF_LEN(m_last) = 0;
3128 SCTP_BUF_NEXT(m_last) = NULL;
3129 SCTP_BUF_NEXT(m) = m_last;
3131 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
3132 SCTP_BUF_LEN(m_last) += padlen;
3133 memset(dp, 0, padlen);
3138 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
3140 /* find the last mbuf in chain and pad it */
3143 if (last_mbuf != NULL) {
3144 return (sctp_add_pad_tombuf(last_mbuf, padval));
3146 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
3147 if (SCTP_BUF_NEXT(m_at) == NULL) {
3148 return (sctp_add_pad_tombuf(m_at, padval));
3156 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
3157 uint16_t error, struct sctp_abort_chunk *abort,
3158 bool from_peer, bool timedout, int so_locked)
3160 struct mbuf *m_notify;
3161 struct sctp_assoc_change *sac;
3162 struct sctp_queued_to_read *control;
3163 unsigned int notif_len;
3167 KASSERT(abort == NULL || from_peer,
3168 ("sctp_notify_assoc_change: ABORT chunk provided for local termination"));
3169 KASSERT(!from_peer || !timedout,
3170 ("sctp_notify_assoc_change: timeouts can only be local"));
3174 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
3175 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
3176 if (abort != NULL) {
3177 abort_len = ntohs(abort->ch.chunk_length);
3179 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
3182 if (abort_len > SCTP_CHUNK_BUFFER_SIZE) {
3183 abort_len = SCTP_CHUNK_BUFFER_SIZE;
3188 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
3189 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
3190 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
3191 notif_len += abort_len;
3193 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3194 if (m_notify == NULL) {
3195 /* Retry with smaller value. */
3196 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
3197 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3198 if (m_notify == NULL) {
3202 SCTP_BUF_NEXT(m_notify) = NULL;
3203 sac = mtod(m_notify, struct sctp_assoc_change *);
3204 memset(sac, 0, notif_len);
3205 sac->sac_type = SCTP_ASSOC_CHANGE;
3207 sac->sac_length = sizeof(struct sctp_assoc_change);
3208 sac->sac_state = state;
3209 sac->sac_error = error;
3210 if (state == SCTP_CANT_STR_ASSOC) {
3211 sac->sac_outbound_streams = 0;
3212 sac->sac_inbound_streams = 0;
3214 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
3215 sac->sac_inbound_streams = stcb->asoc.streamincnt;
3217 sac->sac_assoc_id = sctp_get_associd(stcb);
3218 if (notif_len > sizeof(struct sctp_assoc_change)) {
3219 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
3221 if (stcb->asoc.prsctp_supported == 1) {
3222 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
3224 if (stcb->asoc.auth_supported == 1) {
3225 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
3227 if (stcb->asoc.asconf_supported == 1) {
3228 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
3230 if (stcb->asoc.idata_supported == 1) {
3231 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
3233 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
3234 if (stcb->asoc.reconfig_supported == 1) {
3235 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
3237 sac->sac_length += i;
3238 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
3239 memcpy(sac->sac_info, abort, abort_len);
3240 sac->sac_length += abort_len;
3243 SCTP_BUF_LEN(m_notify) = sac->sac_length;
3244 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3245 0, 0, stcb->asoc.context, 0, 0, 0,
3247 if (control != NULL) {
3248 control->length = SCTP_BUF_LEN(m_notify);
3249 control->spec_flags = M_NOTIFICATION;
3250 /* not that we need this */
3251 control->tail_mbuf = m_notify;
3252 sctp_add_to_readq(stcb->sctp_ep, stcb,
3254 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
3257 sctp_m_freem(m_notify);
3261 * For 1-to-1 style sockets, we send up and error when an ABORT
3265 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3266 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
3267 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
3268 SOCK_LOCK(stcb->sctp_socket);
3270 if (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) {
3271 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
3272 stcb->sctp_socket->so_error = ECONNREFUSED;
3274 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
3275 stcb->sctp_socket->so_error = ECONNRESET;
3279 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
3280 stcb->sctp_socket->so_error = ETIMEDOUT;
3282 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
3283 stcb->sctp_socket->so_error = ECONNABORTED;
3286 SOCK_UNLOCK(stcb->sctp_socket);
3288 /* Wake ANY sleepers */
3289 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3290 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
3291 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
3292 socantrcvmore(stcb->sctp_socket);
3294 sorwakeup(stcb->sctp_socket);
3295 sowwakeup(stcb->sctp_socket);
3299 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
3300 struct sockaddr *sa, uint32_t error, int so_locked)
3302 struct mbuf *m_notify;
3303 struct sctp_paddr_change *spc;
3304 struct sctp_queued_to_read *control;
3306 if ((stcb == NULL) ||
3307 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
3308 /* event not enabled */
3311 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
3312 if (m_notify == NULL)
3314 SCTP_BUF_LEN(m_notify) = 0;
3315 spc = mtod(m_notify, struct sctp_paddr_change *);
3316 memset(spc, 0, sizeof(struct sctp_paddr_change));
3317 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
3319 spc->spc_length = sizeof(struct sctp_paddr_change);
3320 switch (sa->sa_family) {
3324 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
3325 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
3326 (struct sockaddr_in6 *)&spc->spc_aaddr);
3328 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
3331 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
3338 struct sockaddr_in6 *sin6;
3340 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
3342 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
3343 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
3344 if (sin6->sin6_scope_id == 0) {
3345 /* recover scope_id for user */
3346 (void)sa6_recoverscope(sin6);
3348 /* clear embedded scope_id for user */
3349 in6_clearscope(&sin6->sin6_addr);
3359 spc->spc_state = state;
3360 spc->spc_error = error;
3361 spc->spc_assoc_id = sctp_get_associd(stcb);
3363 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
3364 SCTP_BUF_NEXT(m_notify) = NULL;
3366 /* append to socket */
3367 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3368 0, 0, stcb->asoc.context, 0, 0, 0,
3370 if (control == NULL) {
3372 sctp_m_freem(m_notify);
3375 control->length = SCTP_BUF_LEN(m_notify);
3376 control->spec_flags = M_NOTIFICATION;
3377 /* not that we need this */
3378 control->tail_mbuf = m_notify;
3379 sctp_add_to_readq(stcb->sctp_ep, stcb,
3381 &stcb->sctp_socket->so_rcv, 1,
3382 SCTP_READ_LOCK_NOT_HELD,
3387 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
3388 struct sctp_tmit_chunk *chk, int so_locked)
3390 struct mbuf *m_notify;
3391 struct sctp_send_failed *ssf;
3392 struct sctp_send_failed_event *ssfe;
3393 struct sctp_queued_to_read *control;
3394 struct sctp_chunkhdr *chkhdr;
3395 int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len;
3397 if ((stcb == NULL) ||
3398 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3399 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3400 /* event not enabled */
3404 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3405 notifhdr_len = sizeof(struct sctp_send_failed_event);
3407 notifhdr_len = sizeof(struct sctp_send_failed);
3409 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3410 if (m_notify == NULL)
3413 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3414 if (stcb->asoc.idata_supported) {
3415 chkhdr_len = sizeof(struct sctp_idata_chunk);
3417 chkhdr_len = sizeof(struct sctp_data_chunk);
3419 /* Use some defaults in case we can't access the chunk header */
3420 if (chk->send_size >= chkhdr_len) {
3421 payload_len = chk->send_size - chkhdr_len;
3426 if (chk->data != NULL) {
3427 chkhdr = mtod(chk->data, struct sctp_chunkhdr *);
3428 if (chkhdr != NULL) {
3429 chk_len = ntohs(chkhdr->chunk_length);
3430 if ((chk_len >= chkhdr_len) &&
3431 (chk->send_size >= chk_len) &&
3432 (chk->send_size - chk_len < 4)) {
3433 padding_len = chk->send_size - chk_len;
3434 payload_len = chk->send_size - chkhdr_len - padding_len;
3438 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3439 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3440 memset(ssfe, 0, notifhdr_len);
3441 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3443 ssfe->ssfe_flags = SCTP_DATA_SENT;
3445 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3447 ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len);
3448 ssfe->ssfe_error = error;
3449 /* not exactly what the user sent in, but should be close :) */
3450 ssfe->ssfe_info.snd_sid = chk->rec.data.sid;
3451 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
3452 ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid;
3453 ssfe->ssfe_info.snd_context = chk->rec.data.context;
3454 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3455 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3457 ssf = mtod(m_notify, struct sctp_send_failed *);
3458 memset(ssf, 0, notifhdr_len);
3459 ssf->ssf_type = SCTP_SEND_FAILED;
3461 ssf->ssf_flags = SCTP_DATA_SENT;
3463 ssf->ssf_flags = SCTP_DATA_UNSENT;
3465 ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len);
3466 ssf->ssf_error = error;
3467 /* not exactly what the user sent in, but should be close :) */
3468 ssf->ssf_info.sinfo_stream = chk->rec.data.sid;
3469 ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid;
3470 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
3471 ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid;
3472 ssf->ssf_info.sinfo_context = chk->rec.data.context;
3473 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3474 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3476 if (chk->data != NULL) {
3477 /* Trim off the sctp chunk header (it should be there) */
3478 if (chk->send_size == chkhdr_len + payload_len + padding_len) {
3479 m_adj(chk->data, chkhdr_len);
3480 m_adj(chk->data, -padding_len);
3481 sctp_mbuf_crush(chk->data);
3482 chk->send_size -= (chkhdr_len + padding_len);
3485 SCTP_BUF_NEXT(m_notify) = chk->data;
3486 /* Steal off the mbuf */
3489 * For this case, we check the actual socket buffer, since the assoc
3490 * is going away we don't want to overfill the socket buffer for a
3493 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3494 sctp_m_freem(m_notify);
3497 /* append to socket */
3498 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3499 0, 0, stcb->asoc.context, 0, 0, 0,
3501 if (control == NULL) {
3503 sctp_m_freem(m_notify);
3506 control->length = SCTP_BUF_LEN(m_notify);
3507 control->spec_flags = M_NOTIFICATION;
3508 /* not that we need this */
3509 control->tail_mbuf = m_notify;
3510 sctp_add_to_readq(stcb->sctp_ep, stcb,
3512 &stcb->sctp_socket->so_rcv, 1,
3513 SCTP_READ_LOCK_NOT_HELD,
3518 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3519 struct sctp_stream_queue_pending *sp, int so_locked)
3521 struct mbuf *m_notify;
3522 struct sctp_send_failed *ssf;
3523 struct sctp_send_failed_event *ssfe;
3524 struct sctp_queued_to_read *control;
3527 if ((stcb == NULL) ||
3528 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3529 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3530 /* event not enabled */
3533 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3534 notifhdr_len = sizeof(struct sctp_send_failed_event);
3536 notifhdr_len = sizeof(struct sctp_send_failed);
3538 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3539 if (m_notify == NULL) {
3543 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3544 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3545 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3546 memset(ssfe, 0, notifhdr_len);
3547 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3548 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3549 ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length);
3550 ssfe->ssfe_error = error;
3551 /* not exactly what the user sent in, but should be close :) */
3552 ssfe->ssfe_info.snd_sid = sp->sid;
3553 if (sp->some_taken) {
3554 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3556 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3558 ssfe->ssfe_info.snd_ppid = sp->ppid;
3559 ssfe->ssfe_info.snd_context = sp->context;
3560 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3561 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3563 ssf = mtod(m_notify, struct sctp_send_failed *);
3564 memset(ssf, 0, notifhdr_len);
3565 ssf->ssf_type = SCTP_SEND_FAILED;
3566 ssf->ssf_flags = SCTP_DATA_UNSENT;
3567 ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length);
3568 ssf->ssf_error = error;
3569 /* not exactly what the user sent in, but should be close :) */
3570 ssf->ssf_info.sinfo_stream = sp->sid;
3571 ssf->ssf_info.sinfo_ssn = 0;
3572 if (sp->some_taken) {
3573 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3575 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3577 ssf->ssf_info.sinfo_ppid = sp->ppid;
3578 ssf->ssf_info.sinfo_context = sp->context;
3579 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3580 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3582 SCTP_BUF_NEXT(m_notify) = sp->data;
3584 /* Steal off the mbuf */
3587 * For this case, we check the actual socket buffer, since the assoc
3588 * is going away we don't want to overfill the socket buffer for a
3591 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3592 sctp_m_freem(m_notify);
3595 /* append to socket */
3596 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3597 0, 0, stcb->asoc.context, 0, 0, 0,
3599 if (control == NULL) {
3601 sctp_m_freem(m_notify);
3604 control->length = SCTP_BUF_LEN(m_notify);
3605 control->spec_flags = M_NOTIFICATION;
3606 /* not that we need this */
3607 control->tail_mbuf = m_notify;
3608 sctp_add_to_readq(stcb->sctp_ep, stcb,
3610 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3614 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3616 struct mbuf *m_notify;
3617 struct sctp_adaptation_event *sai;
3618 struct sctp_queued_to_read *control;
3620 if ((stcb == NULL) ||
3621 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3622 /* event not enabled */
3626 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3627 if (m_notify == NULL)
3630 SCTP_BUF_LEN(m_notify) = 0;
3631 sai = mtod(m_notify, struct sctp_adaptation_event *);
3632 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3633 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3635 sai->sai_length = sizeof(struct sctp_adaptation_event);
3636 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3637 sai->sai_assoc_id = sctp_get_associd(stcb);
3639 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3640 SCTP_BUF_NEXT(m_notify) = NULL;
3642 /* append to socket */
3643 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3644 0, 0, stcb->asoc.context, 0, 0, 0,
3646 if (control == NULL) {
3648 sctp_m_freem(m_notify);
3651 control->length = SCTP_BUF_LEN(m_notify);
3652 control->spec_flags = M_NOTIFICATION;
3653 /* not that we need this */
3654 control->tail_mbuf = m_notify;
3655 sctp_add_to_readq(stcb->sctp_ep, stcb,
3657 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3660 /* This always must be called with the read-queue LOCKED in the INP */
3662 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3663 uint32_t val, int so_locked)
3665 struct mbuf *m_notify;
3666 struct sctp_pdapi_event *pdapi;
3667 struct sctp_queued_to_read *control;
3670 if ((stcb == NULL) ||
3671 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3672 /* event not enabled */
3675 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3679 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3680 if (m_notify == NULL)
3683 SCTP_BUF_LEN(m_notify) = 0;
3684 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3685 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3686 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3687 pdapi->pdapi_flags = 0;
3688 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3689 pdapi->pdapi_indication = error;
3690 pdapi->pdapi_stream = (val >> 16);
3691 pdapi->pdapi_seq = (val & 0x0000ffff);
3692 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3694 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3695 SCTP_BUF_NEXT(m_notify) = NULL;
3696 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3697 0, 0, stcb->asoc.context, 0, 0, 0,
3699 if (control == NULL) {
3701 sctp_m_freem(m_notify);
3704 control->length = SCTP_BUF_LEN(m_notify);
3705 control->spec_flags = M_NOTIFICATION;
3706 /* not that we need this */
3707 control->tail_mbuf = m_notify;
3708 sb = &stcb->sctp_socket->so_rcv;
3709 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3710 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3712 sctp_sballoc(stcb, sb, m_notify);
3713 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3714 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3716 control->end_added = 1;
3717 if (stcb->asoc.control_pdapi)
3718 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3720 /* we really should not see this case */
3721 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3723 if (stcb->sctp_ep && stcb->sctp_socket) {
3724 /* This should always be the case */
3725 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3730 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3732 struct mbuf *m_notify;
3733 struct sctp_shutdown_event *sse;
3734 struct sctp_queued_to_read *control;
3737 * For TCP model AND UDP connected sockets we will send an error up
3738 * when an SHUTDOWN completes
3740 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3741 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3742 /* mark socket closed for read/write and wakeup! */
3743 socantsendmore(stcb->sctp_socket);
3745 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3746 /* event not enabled */
3750 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3751 if (m_notify == NULL)
3754 sse = mtod(m_notify, struct sctp_shutdown_event *);
3755 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3756 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3758 sse->sse_length = sizeof(struct sctp_shutdown_event);
3759 sse->sse_assoc_id = sctp_get_associd(stcb);
3761 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3762 SCTP_BUF_NEXT(m_notify) = NULL;
3764 /* append to socket */
3765 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3766 0, 0, stcb->asoc.context, 0, 0, 0,
3768 if (control == NULL) {
3770 sctp_m_freem(m_notify);
3773 control->length = SCTP_BUF_LEN(m_notify);
3774 control->spec_flags = M_NOTIFICATION;
3775 /* not that we need this */
3776 control->tail_mbuf = m_notify;
3777 sctp_add_to_readq(stcb->sctp_ep, stcb,
3779 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3783 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3786 struct mbuf *m_notify;
3787 struct sctp_sender_dry_event *event;
3788 struct sctp_queued_to_read *control;
3790 if ((stcb == NULL) ||
3791 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3792 /* event not enabled */
3796 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3797 if (m_notify == NULL) {
3801 SCTP_BUF_LEN(m_notify) = 0;
3802 event = mtod(m_notify, struct sctp_sender_dry_event *);
3803 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3804 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3805 event->sender_dry_flags = 0;
3806 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3807 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3809 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3810 SCTP_BUF_NEXT(m_notify) = NULL;
3812 /* append to socket */
3813 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3814 0, 0, stcb->asoc.context, 0, 0, 0,
3816 if (control == NULL) {
3818 sctp_m_freem(m_notify);
3821 control->length = SCTP_BUF_LEN(m_notify);
3822 control->spec_flags = M_NOTIFICATION;
3823 /* not that we need this */
3824 control->tail_mbuf = m_notify;
3825 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3826 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3830 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3832 struct mbuf *m_notify;
3833 struct sctp_queued_to_read *control;
3834 struct sctp_stream_change_event *stradd;
3836 if ((stcb == NULL) ||
3837 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3838 /* event not enabled */
3841 if ((stcb->asoc.peer_req_out) && flag) {
3842 /* Peer made the request, don't tell the local user */
3843 stcb->asoc.peer_req_out = 0;
3846 stcb->asoc.peer_req_out = 0;
3847 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3848 if (m_notify == NULL)
3851 SCTP_BUF_LEN(m_notify) = 0;
3852 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3853 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3854 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3855 stradd->strchange_flags = flag;
3856 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3857 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3858 stradd->strchange_instrms = numberin;
3859 stradd->strchange_outstrms = numberout;
3860 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3861 SCTP_BUF_NEXT(m_notify) = NULL;
3862 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3864 sctp_m_freem(m_notify);
3867 /* append to socket */
3868 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3869 0, 0, stcb->asoc.context, 0, 0, 0,
3871 if (control == NULL) {
3873 sctp_m_freem(m_notify);
3876 control->length = SCTP_BUF_LEN(m_notify);
3877 control->spec_flags = M_NOTIFICATION;
3878 /* not that we need this */
3879 control->tail_mbuf = m_notify;
3880 sctp_add_to_readq(stcb->sctp_ep, stcb,
3882 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3886 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3888 struct mbuf *m_notify;
3889 struct sctp_queued_to_read *control;
3890 struct sctp_assoc_reset_event *strasoc;
3892 if ((stcb == NULL) ||
3893 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3894 /* event not enabled */
3897 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3898 if (m_notify == NULL)
3901 SCTP_BUF_LEN(m_notify) = 0;
3902 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3903 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3904 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3905 strasoc->assocreset_flags = flag;
3906 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3907 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3908 strasoc->assocreset_local_tsn = sending_tsn;
3909 strasoc->assocreset_remote_tsn = recv_tsn;
3910 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3911 SCTP_BUF_NEXT(m_notify) = NULL;
3912 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3914 sctp_m_freem(m_notify);
3917 /* append to socket */
3918 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3919 0, 0, stcb->asoc.context, 0, 0, 0,
3921 if (control == NULL) {
3923 sctp_m_freem(m_notify);
3926 control->length = SCTP_BUF_LEN(m_notify);
3927 control->spec_flags = M_NOTIFICATION;
3928 /* not that we need this */
3929 control->tail_mbuf = m_notify;
3930 sctp_add_to_readq(stcb->sctp_ep, stcb,
3932 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3936 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3937 int number_entries, uint16_t *list, int flag)
3939 struct mbuf *m_notify;
3940 struct sctp_queued_to_read *control;
3941 struct sctp_stream_reset_event *strreset;
3944 if ((stcb == NULL) ||
3945 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3946 /* event not enabled */
3950 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3951 if (m_notify == NULL)
3954 SCTP_BUF_LEN(m_notify) = 0;
3955 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3956 if (len > M_TRAILINGSPACE(m_notify)) {
3957 /* never enough room */
3958 sctp_m_freem(m_notify);
3961 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3962 memset(strreset, 0, len);
3963 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3964 strreset->strreset_flags = flag;
3965 strreset->strreset_length = len;
3966 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3967 if (number_entries) {
3970 for (i = 0; i < number_entries; i++) {
3971 strreset->strreset_stream_list[i] = ntohs(list[i]);
3974 SCTP_BUF_LEN(m_notify) = len;
3975 SCTP_BUF_NEXT(m_notify) = NULL;
3976 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3978 sctp_m_freem(m_notify);
3981 /* append to socket */
3982 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3983 0, 0, stcb->asoc.context, 0, 0, 0,
3985 if (control == NULL) {
3987 sctp_m_freem(m_notify);
3990 control->length = SCTP_BUF_LEN(m_notify);
3991 control->spec_flags = M_NOTIFICATION;
3992 /* not that we need this */
3993 control->tail_mbuf = m_notify;
3994 sctp_add_to_readq(stcb->sctp_ep, stcb,
3996 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
4000 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
4002 struct mbuf *m_notify;
4003 struct sctp_remote_error *sre;
4004 struct sctp_queued_to_read *control;
4005 unsigned int notif_len;
4008 if ((stcb == NULL) ||
4009 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
4012 if (chunk != NULL) {
4013 chunk_len = ntohs(chunk->ch.chunk_length);
4015 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
4018 if (chunk_len > SCTP_CHUNK_BUFFER_SIZE) {
4019 chunk_len = SCTP_CHUNK_BUFFER_SIZE;
4024 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
4025 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
4026 if (m_notify == NULL) {
4027 /* Retry with smaller value. */
4028 notif_len = (unsigned int)sizeof(struct sctp_remote_error);
4029 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
4030 if (m_notify == NULL) {
4034 SCTP_BUF_NEXT(m_notify) = NULL;
4035 sre = mtod(m_notify, struct sctp_remote_error *);
4036 memset(sre, 0, notif_len);
4037 sre->sre_type = SCTP_REMOTE_ERROR;
4039 sre->sre_length = sizeof(struct sctp_remote_error);
4040 sre->sre_error = error;
4041 sre->sre_assoc_id = sctp_get_associd(stcb);
4042 if (notif_len > sizeof(struct sctp_remote_error)) {
4043 memcpy(sre->sre_data, chunk, chunk_len);
4044 sre->sre_length += chunk_len;
4046 SCTP_BUF_LEN(m_notify) = sre->sre_length;
4047 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
4048 0, 0, stcb->asoc.context, 0, 0, 0,
4050 if (control != NULL) {
4051 control->length = SCTP_BUF_LEN(m_notify);
4052 control->spec_flags = M_NOTIFICATION;
4053 /* not that we need this */
4054 control->tail_mbuf = m_notify;
4055 sctp_add_to_readq(stcb->sctp_ep, stcb,
4057 &stcb->sctp_socket->so_rcv, 1,
4058 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
4060 sctp_m_freem(m_notify);
4065 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
4066 uint32_t error, void *data, int so_locked)
4068 if ((stcb == NULL) ||
4069 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4070 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4071 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
4072 /* If the socket is gone we are out of here */
4075 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
4078 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4079 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4080 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
4081 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
4082 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
4083 /* Don't report these in front states */
4087 switch (notification) {
4088 case SCTP_NOTIFY_ASSOC_UP:
4089 if (stcb->asoc.assoc_up_sent == 0) {
4090 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, false, false, so_locked);
4091 stcb->asoc.assoc_up_sent = 1;
4093 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
4094 sctp_notify_adaptation_layer(stcb);
4096 if (stcb->asoc.auth_supported == 0) {
4097 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
4101 case SCTP_NOTIFY_ASSOC_DOWN:
4102 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, false, false, so_locked);
4104 case SCTP_NOTIFY_INTERFACE_DOWN:
4106 struct sctp_nets *net;
4108 net = (struct sctp_nets *)data;
4109 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
4110 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4113 case SCTP_NOTIFY_INTERFACE_UP:
4115 struct sctp_nets *net;
4117 net = (struct sctp_nets *)data;
4118 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
4119 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4122 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
4124 struct sctp_nets *net;
4126 net = (struct sctp_nets *)data;
4127 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
4128 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4131 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
4132 sctp_notify_send_failed2(stcb, error,
4133 (struct sctp_stream_queue_pending *)data, so_locked);
4135 case SCTP_NOTIFY_SENT_DG_FAIL:
4136 sctp_notify_send_failed(stcb, 1, error,
4137 (struct sctp_tmit_chunk *)data, so_locked);
4139 case SCTP_NOTIFY_UNSENT_DG_FAIL:
4140 sctp_notify_send_failed(stcb, 0, error,
4141 (struct sctp_tmit_chunk *)data, so_locked);
4143 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
4147 val = *((uint32_t *)data);
4149 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
4152 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
4153 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4154 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4155 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, false, false, so_locked);
4157 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, false, false, so_locked);
4160 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
4161 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4162 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4163 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, true, false, so_locked);
4165 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, true, false, so_locked);
4168 case SCTP_NOTIFY_ASSOC_TIMEDOUT:
4169 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4170 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4171 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, false, true, so_locked);
4173 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, false, true, so_locked);
4176 case SCTP_NOTIFY_ASSOC_RESTART:
4177 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, false, false, so_locked);
4178 if (stcb->asoc.auth_supported == 0) {
4179 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
4183 case SCTP_NOTIFY_STR_RESET_SEND:
4184 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_OUTGOING_SSN);
4186 case SCTP_NOTIFY_STR_RESET_RECV:
4187 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_INCOMING);
4189 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
4190 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4191 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
4193 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
4194 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4195 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
4197 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
4198 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4199 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
4201 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
4202 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4203 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
4205 case SCTP_NOTIFY_ASCONF_ADD_IP:
4206 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
4209 case SCTP_NOTIFY_ASCONF_DELETE_IP:
4210 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
4213 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
4214 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
4217 case SCTP_NOTIFY_PEER_SHUTDOWN:
4218 sctp_notify_shutdown_event(stcb);
4220 case SCTP_NOTIFY_AUTH_NEW_KEY:
4221 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
4222 (uint16_t)(uintptr_t)data,
4225 case SCTP_NOTIFY_AUTH_FREE_KEY:
4226 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
4227 (uint16_t)(uintptr_t)data,
4230 case SCTP_NOTIFY_NO_PEER_AUTH:
4231 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
4232 (uint16_t)(uintptr_t)data,
4235 case SCTP_NOTIFY_SENDER_DRY:
4236 sctp_notify_sender_dry_event(stcb, so_locked);
4238 case SCTP_NOTIFY_REMOTE_ERROR:
4239 sctp_notify_remote_error(stcb, error, data);
4242 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
4243 __func__, notification, notification);
4249 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int so_locked)
4251 struct sctp_association *asoc;
4252 struct sctp_stream_out *outs;
4253 struct sctp_tmit_chunk *chk, *nchk;
4254 struct sctp_stream_queue_pending *sp, *nsp;
4261 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
4262 /* already being freed */
4265 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4266 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4267 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
4270 /* now through all the gunk freeing chunks */
4271 /* sent queue SHOULD be empty */
4272 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
4273 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4274 asoc->sent_queue_cnt--;
4275 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
4276 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
4277 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
4280 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
4284 if (chk->data != NULL) {
4285 sctp_free_bufspace(stcb, asoc, chk, 1);
4286 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
4287 error, chk, so_locked);
4289 sctp_m_freem(chk->data);
4293 sctp_free_a_chunk(stcb, chk, so_locked);
4294 /* sa_ignore FREED_MEMORY */
4296 /* pending send queue SHOULD be empty */
4297 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
4298 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4299 asoc->send_queue_cnt--;
4300 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
4301 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
4304 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
4307 if (chk->data != NULL) {
4308 sctp_free_bufspace(stcb, asoc, chk, 1);
4309 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
4310 error, chk, so_locked);
4312 sctp_m_freem(chk->data);
4316 sctp_free_a_chunk(stcb, chk, so_locked);
4317 /* sa_ignore FREED_MEMORY */
4319 for (i = 0; i < asoc->streamoutcnt; i++) {
4320 /* For each stream */
4321 outs = &asoc->strmout[i];
4322 /* clean up any sends there */
4323 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4324 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
4325 TAILQ_REMOVE(&outs->outqueue, sp, next);
4326 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 1);
4327 sctp_free_spbufspace(stcb, asoc, sp);
4329 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4330 error, (void *)sp, so_locked);
4332 sctp_m_freem(sp->data);
4334 sp->tail_mbuf = NULL;
4339 sctp_free_remote_addr(sp->net);
4342 /* Free the chunk */
4343 sctp_free_a_strmoq(stcb, sp, so_locked);
4344 /* sa_ignore FREED_MEMORY */
4350 sctp_abort_notification(struct sctp_tcb *stcb, bool from_peer, bool timeout,
4351 uint16_t error, struct sctp_abort_chunk *abort,
4357 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4358 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4359 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4360 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
4362 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4363 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4364 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
4367 SCTP_TCB_SEND_LOCK(stcb);
4368 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_WAS_ABORTED);
4369 /* Tell them we lost the asoc */
4370 sctp_report_all_outbound(stcb, error, so_locked);
4371 SCTP_TCB_SEND_UNLOCK(stcb);
4373 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
4376 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_TIMEDOUT, stcb, error, abort, so_locked);
4378 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
4384 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4385 struct mbuf *m, int iphlen,
4386 struct sockaddr *src, struct sockaddr *dst,
4387 struct sctphdr *sh, struct mbuf *op_err,
4388 uint8_t mflowtype, uint32_t mflowid,
4389 uint32_t vrf_id, uint16_t port)
4391 struct sctp_gen_error_cause *cause;
4393 uint16_t cause_code;
4396 vtag = stcb->asoc.peer_vtag;
4397 vrf_id = stcb->asoc.vrf_id;
4398 if (op_err != NULL) {
4399 /* Read the cause code from the error cause. */
4400 cause = mtod(op_err, struct sctp_gen_error_cause *);
4401 cause_code = ntohs(cause->code);
4408 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
4409 mflowtype, mflowid, inp->fibnum,
4412 /* We have a TCB to abort, send notification too */
4413 sctp_abort_notification(stcb, false, false, cause_code, NULL, SCTP_SO_NOT_LOCKED);
4414 /* Ok, now lets free it */
4415 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4416 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
4417 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4418 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4420 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4421 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
4424 #ifdef SCTP_ASOCLOG_OF_TSNS
4426 sctp_print_out_track_log(struct sctp_tcb *stcb)
4431 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
4432 SCTP_PRINTF("IN bound TSN log-aaa\n");
4433 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4434 SCTP_PRINTF("None rcvd\n");
4437 if (stcb->asoc.tsn_in_wrapped) {
4438 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4439 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4440 stcb->asoc.in_tsnlog[i].tsn,
4441 stcb->asoc.in_tsnlog[i].strm,
4442 stcb->asoc.in_tsnlog[i].seq,
4443 stcb->asoc.in_tsnlog[i].flgs,
4444 stcb->asoc.in_tsnlog[i].sz);
4447 if (stcb->asoc.tsn_in_at) {
4448 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4449 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4450 stcb->asoc.in_tsnlog[i].tsn,
4451 stcb->asoc.in_tsnlog[i].strm,
4452 stcb->asoc.in_tsnlog[i].seq,
4453 stcb->asoc.in_tsnlog[i].flgs,
4454 stcb->asoc.in_tsnlog[i].sz);
4458 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4459 if ((stcb->asoc.tsn_out_at == 0) &&
4460 (stcb->asoc.tsn_out_wrapped == 0)) {
4461 SCTP_PRINTF("None sent\n");
4463 if (stcb->asoc.tsn_out_wrapped) {
4464 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4465 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4466 stcb->asoc.out_tsnlog[i].tsn,
4467 stcb->asoc.out_tsnlog[i].strm,
4468 stcb->asoc.out_tsnlog[i].seq,
4469 stcb->asoc.out_tsnlog[i].flgs,
4470 stcb->asoc.out_tsnlog[i].sz);
4473 if (stcb->asoc.tsn_out_at) {
4474 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4475 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4476 stcb->asoc.out_tsnlog[i].tsn,
4477 stcb->asoc.out_tsnlog[i].strm,
4478 stcb->asoc.out_tsnlog[i].seq,
4479 stcb->asoc.out_tsnlog[i].flgs,
4480 stcb->asoc.out_tsnlog[i].sz);
4488 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4489 struct mbuf *op_err, bool timedout, int so_locked)
4491 struct sctp_gen_error_cause *cause;
4492 uint16_t cause_code;
4495 /* Got to have a TCB */
4496 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4497 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4498 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4499 SCTP_CALLED_DIRECTLY_NOCMPSET);
4504 if (op_err != NULL) {
4505 /* Read the cause code from the error cause. */
4506 cause = mtod(op_err, struct sctp_gen_error_cause *);
4507 cause_code = ntohs(cause->code);
4511 /* notify the peer */
4512 sctp_send_abort_tcb(stcb, op_err, so_locked);
4513 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4514 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
4515 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4516 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4518 /* notify the ulp */
4519 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4520 sctp_abort_notification(stcb, false, timedout, cause_code, NULL, so_locked);
4522 /* now free the asoc */
4523 #ifdef SCTP_ASOCLOG_OF_TSNS
4524 sctp_print_out_track_log(stcb);
4526 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4527 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4531 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4532 struct sockaddr *src, struct sockaddr *dst,
4533 struct sctphdr *sh, struct sctp_inpcb *inp,
4535 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4536 uint32_t vrf_id, uint16_t port)
4538 struct sctp_chunkhdr *ch, chunk_buf;
4539 unsigned int chk_length;
4540 int contains_init_chunk;
4542 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4543 /* Generate a TO address for future reference */
4544 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4545 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4546 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4547 SCTP_CALLED_DIRECTLY_NOCMPSET);
4550 contains_init_chunk = 0;
4551 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4552 sizeof(*ch), (uint8_t *)&chunk_buf);
4553 while (ch != NULL) {
4554 chk_length = ntohs(ch->chunk_length);
4555 if (chk_length < sizeof(*ch)) {
4556 /* break to abort land */
4559 switch (ch->chunk_type) {
4561 contains_init_chunk = 1;
4563 case SCTP_PACKET_DROPPED:
4564 /* we don't respond to pkt-dropped */
4566 case SCTP_ABORT_ASSOCIATION:
4567 /* we don't respond with an ABORT to an ABORT */
4569 case SCTP_SHUTDOWN_COMPLETE:
4571 * we ignore it since we are not waiting for it and
4575 case SCTP_SHUTDOWN_ACK:
4576 sctp_send_shutdown_complete2(src, dst, sh,
4577 mflowtype, mflowid, fibnum,
4583 offset += SCTP_SIZE32(chk_length);
4584 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4585 sizeof(*ch), (uint8_t *)&chunk_buf);
4587 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4588 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4589 (contains_init_chunk == 0))) {
4590 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4591 mflowtype, mflowid, fibnum,
4597 * check the inbound datagram to make sure there is not an abort inside it,
4598 * if there is return 1, else return 0.
4601 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtag)
4603 struct sctp_chunkhdr *ch;
4604 struct sctp_init_chunk *init_chk, chunk_buf;
4606 unsigned int chk_length;
4608 offset = iphlen + sizeof(struct sctphdr);
4609 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4610 (uint8_t *)&chunk_buf);
4611 while (ch != NULL) {
4612 chk_length = ntohs(ch->chunk_length);
4613 if (chk_length < sizeof(*ch)) {
4614 /* packet is probably corrupt */
4617 /* we seem to be ok, is it an abort? */
4618 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4619 /* yep, tell them */
4622 if ((ch->chunk_type == SCTP_INITIATION) ||
4623 (ch->chunk_type == SCTP_INITIATION_ACK)) {
4624 /* need to update the Vtag */
4625 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4626 offset, sizeof(struct sctp_init_chunk), (uint8_t *)&chunk_buf);
4627 if (init_chk != NULL) {
4628 *vtag = ntohl(init_chk->init.initiate_tag);
4631 /* Nope, move to the next chunk */
4632 offset += SCTP_SIZE32(chk_length);
4633 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4634 sizeof(*ch), (uint8_t *)&chunk_buf);
4640 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4641 * set (i.e. it's 0) so, create this function to compare link local scopes
4645 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4647 struct sockaddr_in6 a, b;
4653 if (a.sin6_scope_id == 0)
4654 if (sa6_recoverscope(&a)) {
4655 /* can't get scope, so can't match */
4658 if (b.sin6_scope_id == 0)
4659 if (sa6_recoverscope(&b)) {
4660 /* can't get scope, so can't match */
4663 if (a.sin6_scope_id != b.sin6_scope_id)
4670 * returns a sockaddr_in6 with embedded scope recovered and removed
4672 struct sockaddr_in6 *
4673 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4675 /* check and strip embedded scope junk */
4676 if (addr->sin6_family == AF_INET6) {
4677 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4678 if (addr->sin6_scope_id == 0) {
4680 if (!sa6_recoverscope(store)) {
4681 /* use the recovered scope */
4685 /* else, return the original "to" addr */
4686 in6_clearscope(&addr->sin6_addr);
4695 * are the two addresses the same? currently a "scopeless" check returns: 1
4699 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4703 if (sa1 == NULL || sa2 == NULL)
4706 /* must be the same family */
4707 if (sa1->sa_family != sa2->sa_family)
4710 switch (sa1->sa_family) {
4714 /* IPv6 addresses */
4715 struct sockaddr_in6 *sin6_1, *sin6_2;
4717 sin6_1 = (struct sockaddr_in6 *)sa1;
4718 sin6_2 = (struct sockaddr_in6 *)sa2;
4719 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4726 /* IPv4 addresses */
4727 struct sockaddr_in *sin_1, *sin_2;
4729 sin_1 = (struct sockaddr_in *)sa1;
4730 sin_2 = (struct sockaddr_in *)sa2;
4731 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4735 /* we don't do these... */
4741 sctp_print_address(struct sockaddr *sa)
4744 char ip6buf[INET6_ADDRSTRLEN];
4747 switch (sa->sa_family) {
4751 struct sockaddr_in6 *sin6;
4753 sin6 = (struct sockaddr_in6 *)sa;
4754 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4755 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4756 ntohs(sin6->sin6_port),
4757 sin6->sin6_scope_id);
4764 struct sockaddr_in *sin;
4767 sin = (struct sockaddr_in *)sa;
4768 p = (unsigned char *)&sin->sin_addr;
4769 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4770 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4781 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4782 struct sctp_inpcb *new_inp,
4783 struct sctp_tcb *stcb,
4787 * go through our old INP and pull off any control structures that
4788 * belong to stcb and move then to the new inp.
4790 struct socket *old_so, *new_so;
4791 struct sctp_queued_to_read *control, *nctl;
4792 struct sctp_readhead tmp_queue;
4796 old_so = old_inp->sctp_socket;
4797 new_so = new_inp->sctp_socket;
4798 TAILQ_INIT(&tmp_queue);
4799 error = sblock(&old_so->so_rcv, waitflags);
4802 * Gak, can't get sblock, we have a problem. data will be
4803 * left stranded.. and we don't dare look at it since the
4804 * other thread may be reading something. Oh well, its a
4805 * screwed up app that does a peeloff OR a accept while
4806 * reading from the main socket... actually its only the
4807 * peeloff() case, since I think read will fail on a
4808 * listening socket..
4812 /* lock the socket buffers */
4813 SCTP_INP_READ_LOCK(old_inp);
4814 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4815 /* Pull off all for out target stcb */
4816 if (control->stcb == stcb) {
4817 /* remove it we want it */
4818 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4819 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4822 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4823 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4825 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4826 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4827 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4829 m = SCTP_BUF_NEXT(m);
4833 SCTP_INP_READ_UNLOCK(old_inp);
4834 /* Remove the sb-lock on the old socket */
4836 sbunlock(&old_so->so_rcv);
4837 /* Now we move them over to the new socket buffer */
4838 SCTP_INP_READ_LOCK(new_inp);
4839 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4840 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4843 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4844 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4846 sctp_sballoc(stcb, &new_so->so_rcv, m);
4847 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4848 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4850 m = SCTP_BUF_NEXT(m);
4853 SCTP_INP_READ_UNLOCK(new_inp);
4857 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
4858 struct sctp_tcb *stcb,
4863 if ((inp != NULL) && (inp->sctp_socket != NULL)) {
4864 sctp_sorwakeup(inp, inp->sctp_socket);
4869 sctp_add_to_readq(struct sctp_inpcb *inp,
4870 struct sctp_tcb *stcb,
4871 struct sctp_queued_to_read *control,
4874 int inp_read_lock_held,
4878 * Here we must place the control on the end of the socket read
4879 * queue AND increment sb_cc so that select will work properly on
4882 struct mbuf *m, *prev = NULL;
4887 panic("Gak, inp NULL on add_to_readq");
4891 if (inp_read_lock_held == 0)
4892 SCTP_INP_READ_LOCK(inp);
4893 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4894 if (!control->on_strm_q) {
4895 sctp_free_remote_addr(control->whoFrom);
4896 if (control->data) {
4897 sctp_m_freem(control->data);
4898 control->data = NULL;
4900 sctp_free_a_readq(stcb, control);
4902 if (inp_read_lock_held == 0)
4903 SCTP_INP_READ_UNLOCK(inp);
4906 if (!(control->spec_flags & M_NOTIFICATION)) {
4907 atomic_add_int(&inp->total_recvs, 1);
4908 if (!control->do_not_ref_stcb) {
4909 atomic_add_int(&stcb->total_recvs, 1);
4913 control->held_length = 0;
4914 control->length = 0;
4916 if (SCTP_BUF_LEN(m) == 0) {
4917 /* Skip mbufs with NO length */
4920 control->data = sctp_m_free(m);
4923 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4924 m = SCTP_BUF_NEXT(prev);
4927 control->tail_mbuf = prev;
4932 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4933 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4935 sctp_sballoc(stcb, sb, m);
4936 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4937 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4939 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4940 m = SCTP_BUF_NEXT(m);
4943 control->tail_mbuf = prev;
4945 /* Everything got collapsed out?? */
4946 if (!control->on_strm_q) {
4947 sctp_free_remote_addr(control->whoFrom);
4948 sctp_free_a_readq(stcb, control);
4950 if (inp_read_lock_held == 0)
4951 SCTP_INP_READ_UNLOCK(inp);
4955 control->end_added = 1;
4957 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4958 control->on_read_q = 1;
4959 if (inp_read_lock_held == 0)
4960 SCTP_INP_READ_UNLOCK(inp);
4961 if (inp && inp->sctp_socket) {
4962 sctp_wakeup_the_read_socket(inp, stcb, so_locked);
4966 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4967 *************ALTERNATE ROUTING CODE
4970 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4971 *************ALTERNATE ROUTING CODE
4975 sctp_generate_cause(uint16_t code, char *info)
4978 struct sctp_gen_error_cause *cause;
4982 if ((code == 0) || (info == NULL)) {
4985 info_len = strlen(info);
4986 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
4989 len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len);
4990 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4992 SCTP_BUF_LEN(m) = len;
4993 cause = mtod(m, struct sctp_gen_error_cause *);
4994 cause->code = htons(code);
4995 cause->length = htons(len);
4996 memcpy(cause->info, info, info_len);
5002 sctp_generate_no_user_data_cause(uint32_t tsn)
5005 struct sctp_error_no_user_data *no_user_data_cause;
5008 len = (uint16_t)sizeof(struct sctp_error_no_user_data);
5009 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
5011 SCTP_BUF_LEN(m) = len;
5012 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
5013 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
5014 no_user_data_cause->cause.length = htons(len);
5015 no_user_data_cause->tsn = htonl(tsn);
5020 #ifdef SCTP_MBCNT_LOGGING
5022 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
5023 struct sctp_tmit_chunk *tp1, int chk_cnt)
5025 if (tp1->data == NULL) {
5028 asoc->chunks_on_out_queue -= chk_cnt;
5029 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
5030 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
5031 asoc->total_output_queue_size,
5036 if (asoc->total_output_queue_size >= tp1->book_size) {
5037 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
5039 asoc->total_output_queue_size = 0;
5042 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
5043 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
5044 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
5045 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
5047 stcb->sctp_socket->so_snd.sb_cc = 0;
5055 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
5056 uint8_t sent, int so_locked)
5058 struct sctp_stream_out *strq;
5059 struct sctp_tmit_chunk *chk = NULL, *tp2;
5060 struct sctp_stream_queue_pending *sp;
5063 uint8_t foundeom = 0;
5066 int do_wakeup_routine = 0;
5068 sid = tp1->rec.data.sid;
5069 mid = tp1->rec.data.mid;
5070 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
5071 stcb->asoc.abandoned_sent[0]++;
5072 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
5073 stcb->asoc.strmout[sid].abandoned_sent[0]++;
5074 #if defined(SCTP_DETAILED_STR_STATS)
5075 stcb->asoc.strmout[sid].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
5078 stcb->asoc.abandoned_unsent[0]++;
5079 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
5080 stcb->asoc.strmout[sid].abandoned_unsent[0]++;
5081 #if defined(SCTP_DETAILED_STR_STATS)
5082 stcb->asoc.strmout[sid].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
5086 ret_sz += tp1->book_size;
5087 if (tp1->data != NULL) {
5088 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
5089 sctp_flight_size_decrease(tp1);
5090 sctp_total_flight_decrease(stcb, tp1);
5092 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
5093 stcb->asoc.peers_rwnd += tp1->send_size;
5094 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
5096 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
5098 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
5101 sctp_m_freem(tp1->data);
5104 do_wakeup_routine = 1;
5105 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
5106 stcb->asoc.sent_queue_cnt_removeable--;
5109 tp1->sent = SCTP_FORWARD_TSN_SKIP;
5110 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
5111 SCTP_DATA_NOT_FRAG) {
5112 /* not frag'ed we ae done */
5115 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
5116 /* end of frag, we are done */
5121 * Its a begin or middle piece, we must mark all of
5125 tp1 = TAILQ_NEXT(tp1, sctp_next);
5127 } while (tp1 && notdone);
5128 if (foundeom == 0) {
5130 * The multi-part message was scattered across the send and
5133 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
5134 if ((tp1->rec.data.sid != sid) ||
5135 (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) {
5139 * save to chk in case we have some on stream out
5140 * queue. If so and we have an un-transmitted one we
5141 * don't have to fudge the TSN.
5144 ret_sz += tp1->book_size;
5145 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
5147 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
5149 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
5152 sctp_m_freem(tp1->data);
5155 /* No flight involved here book the size to 0 */
5157 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
5160 do_wakeup_routine = 1;
5161 tp1->sent = SCTP_FORWARD_TSN_SKIP;
5162 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
5164 * on to the sent queue so we can wait for it to be
5167 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
5169 stcb->asoc.send_queue_cnt--;
5170 stcb->asoc.sent_queue_cnt++;
5173 if (foundeom == 0) {
5175 * Still no eom found. That means there is stuff left on the
5176 * stream out queue.. yuck.
5178 SCTP_TCB_SEND_LOCK(stcb);
5179 strq = &stcb->asoc.strmout[sid];
5180 sp = TAILQ_FIRST(&strq->outqueue);
5182 sp->discard_rest = 1;
5184 * We may need to put a chunk on the queue that
5185 * holds the TSN that would have been sent with the
5189 /* Yep, we have to */
5190 sctp_alloc_a_chunk(stcb, chk);
5193 * we are hosed. All we can do is
5194 * nothing.. which will cause an
5195 * abort if the peer is paying
5200 memset(chk, 0, sizeof(*chk));
5201 chk->rec.data.rcv_flags = 0;
5202 chk->sent = SCTP_FORWARD_TSN_SKIP;
5203 chk->asoc = &stcb->asoc;
5204 if (stcb->asoc.idata_supported == 0) {
5205 if (sp->sinfo_flags & SCTP_UNORDERED) {
5206 chk->rec.data.mid = 0;
5208 chk->rec.data.mid = strq->next_mid_ordered;
5211 if (sp->sinfo_flags & SCTP_UNORDERED) {
5212 chk->rec.data.mid = strq->next_mid_unordered;
5214 chk->rec.data.mid = strq->next_mid_ordered;
5217 chk->rec.data.sid = sp->sid;
5218 chk->rec.data.ppid = sp->ppid;
5219 chk->rec.data.context = sp->context;
5220 chk->flags = sp->act_flags;
5222 chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
5223 strq->chunks_on_queues++;
5224 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
5225 stcb->asoc.sent_queue_cnt++;
5226 stcb->asoc.pr_sctp_cnt++;
5228 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
5229 if (sp->sinfo_flags & SCTP_UNORDERED) {
5230 chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED;
5232 if (stcb->asoc.idata_supported == 0) {
5233 if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) {
5234 strq->next_mid_ordered++;
5237 if (sp->sinfo_flags & SCTP_UNORDERED) {
5238 strq->next_mid_unordered++;
5240 strq->next_mid_ordered++;
5246 * Pull any data to free up the SB and allow
5247 * sender to "add more" while we will throw
5250 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
5251 ret_sz += sp->length;
5252 do_wakeup_routine = 1;
5254 sctp_m_freem(sp->data);
5256 sp->tail_mbuf = NULL;
5260 SCTP_TCB_SEND_UNLOCK(stcb);
5262 if (do_wakeup_routine) {
5263 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
5269 * checks to see if the given address, sa, is one that is currently known by
5270 * the kernel note: can't distinguish the same address on multiple interfaces
5271 * and doesn't handle multiple addresses with different zone/scope id's note:
5272 * ifa_ifwithaddr() compares the entire sockaddr struct
5275 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
5278 struct sctp_laddr *laddr;
5280 if (holds_lock == 0) {
5281 SCTP_INP_RLOCK(inp);
5284 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5285 if (laddr->ifa == NULL)
5287 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
5290 if (addr->sa_family == AF_INET) {
5291 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5292 laddr->ifa->address.sin.sin_addr.s_addr) {
5299 if (addr->sa_family == AF_INET6) {
5300 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5301 &laddr->ifa->address.sin6)) {
5308 if (holds_lock == 0) {
5309 SCTP_INP_RUNLOCK(inp);
5311 if (laddr != NULL) {
5312 return (laddr->ifa);
5319 sctp_get_ifa_hash_val(struct sockaddr *addr)
5321 switch (addr->sa_family) {
5325 struct sockaddr_in *sin;
5327 sin = (struct sockaddr_in *)addr;
5328 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
5334 struct sockaddr_in6 *sin6;
5335 uint32_t hash_of_addr;
5337 sin6 = (struct sockaddr_in6 *)addr;
5338 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5339 sin6->sin6_addr.s6_addr32[1] +
5340 sin6->sin6_addr.s6_addr32[2] +
5341 sin6->sin6_addr.s6_addr32[3]);
5342 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5343 return (hash_of_addr);
5353 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5355 struct sctp_ifa *sctp_ifap;
5356 struct sctp_vrf *vrf;
5357 struct sctp_ifalist *hash_head;
5358 uint32_t hash_of_addr;
5360 if (holds_lock == 0) {
5361 SCTP_IPI_ADDR_RLOCK();
5363 SCTP_IPI_ADDR_LOCK_ASSERT();
5366 vrf = sctp_find_vrf(vrf_id);
5368 if (holds_lock == 0)
5369 SCTP_IPI_ADDR_RUNLOCK();
5373 hash_of_addr = sctp_get_ifa_hash_val(addr);
5375 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5376 if (hash_head == NULL) {
5377 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5378 hash_of_addr, (uint32_t)vrf->vrf_addr_hashmark,
5379 (uint32_t)(hash_of_addr & vrf->vrf_addr_hashmark));
5380 sctp_print_address(addr);
5381 SCTP_PRINTF("No such bucket for address\n");
5382 if (holds_lock == 0)
5383 SCTP_IPI_ADDR_RUNLOCK();
5387 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5388 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5391 if (addr->sa_family == AF_INET) {
5392 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5393 sctp_ifap->address.sin.sin_addr.s_addr) {
5400 if (addr->sa_family == AF_INET6) {
5401 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5402 &sctp_ifap->address.sin6)) {
5409 if (holds_lock == 0)
5410 SCTP_IPI_ADDR_RUNLOCK();
5415 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t *freed_so_far, int hold_rlock,
5418 /* User pulled some data, do we need a rwnd update? */
5419 struct epoch_tracker et;
5422 struct socket *so = NULL;
5427 atomic_add_int(&stcb->asoc.refcnt, 1);
5429 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_ACK_SENT) ||
5430 (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED | SCTP_STATE_SHUTDOWN_RECEIVED))) {
5431 /* Pre-check If we are freeing no update */
5434 SCTP_INP_INCR_REF(stcb->sctp_ep);
5435 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5436 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5439 so = stcb->sctp_socket;
5443 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5444 /* Have you have freed enough to look */
5446 /* Yep, its worth a look and the lock overhead */
5448 /* Figure out what the rwnd would be */
5449 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5450 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5451 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5455 if (dif >= rwnd_req) {
5457 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5460 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5462 * One last check before we allow the guy possibly
5463 * to get in. There is a race, where the guy has not
5464 * reached the gate. In that case
5468 SCTP_TCB_LOCK(stcb);
5469 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5470 /* No reports here */
5471 SCTP_TCB_UNLOCK(stcb);
5474 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5475 NET_EPOCH_ENTER(et);
5476 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5478 sctp_chunk_output(stcb->sctp_ep, stcb,
5479 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5480 /* make sure no timer is running */
5482 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5483 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5484 SCTP_TCB_UNLOCK(stcb);
5486 /* Update how much we have pending */
5487 stcb->freed_by_sorcv_sincelast = dif;
5490 if (so && r_unlocked && hold_rlock) {
5491 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5494 SCTP_INP_DECR_REF(stcb->sctp_ep);
5496 atomic_add_int(&stcb->asoc.refcnt, -1);
5501 sctp_sorecvmsg(struct socket *so,
5504 struct sockaddr *from,
5507 struct sctp_sndrcvinfo *sinfo,
5511 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5512 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5513 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5514 * On the way out we may send out any combination of:
5515 * MSG_NOTIFICATION MSG_EOR
5518 struct sctp_inpcb *inp = NULL;
5522 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5523 struct mbuf *m = NULL;
5524 struct sctp_tcb *stcb = NULL;
5525 int wakeup_read_socket = 0;
5526 int freecnt_applied = 0;
5527 int out_flags = 0, in_flags = 0;
5528 int block_allowed = 1;
5529 uint32_t freed_so_far = 0;
5530 ssize_t copied_so_far = 0;
5531 int in_eeor_mode = 0;
5532 int no_rcv_needed = 0;
5533 uint32_t rwnd_req = 0;
5534 int hold_sblock = 0;
5537 uint32_t held_length = 0;
5538 int sockbuf_lock = 0;
5541 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5546 in_flags = *msg_flags;
5547 if (in_flags & MSG_PEEK)
5548 SCTP_STAT_INCR(sctps_read_peeks);
5552 slen = uio->uio_resid;
5554 /* Pull in and set up our int flags */
5555 if (in_flags & MSG_OOB) {
5556 /* Out of band's NOT supported */
5557 return (EOPNOTSUPP);
5559 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5560 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5563 if ((in_flags & (MSG_DONTWAIT
5566 SCTP_SO_IS_NBIO(so)) {
5569 /* setup the endpoint */
5570 inp = (struct sctp_inpcb *)so->so_pcb;
5572 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5575 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5576 /* Must be at least a MTU's worth */
5577 if (rwnd_req < SCTP_MIN_RWND)
5578 rwnd_req = SCTP_MIN_RWND;
5579 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5580 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5581 sctp_misc_ints(SCTP_SORECV_ENTER,
5582 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5584 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5585 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5586 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5589 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5591 goto release_unlocked;
5597 if (hold_sblock == 0) {
5598 SOCKBUF_LOCK(&so->so_rcv);
5601 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5602 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5605 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5607 error = so->so_error;
5608 if ((in_flags & MSG_PEEK) == 0)
5612 if (so->so_rcv.sb_cc == 0) {
5619 if (so->so_rcv.sb_cc <= held_length) {
5621 error = so->so_error;
5622 if ((in_flags & MSG_PEEK) == 0) {
5627 if ((so->so_rcv.sb_cc == 0) &&
5628 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5629 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5630 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5632 * For active open side clear flags for
5633 * re-use passive open is blocked by
5636 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5638 * You were aborted, passive side
5641 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5644 so->so_state &= ~(SS_ISCONNECTING |
5645 SS_ISDISCONNECTING |
5649 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5650 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5657 if (block_allowed) {
5658 error = sbwait(&so->so_rcv);
5663 goto restart_nosblocks;
5665 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5666 error = EWOULDBLOCK;
5670 if (hold_sblock == 1) {
5671 SOCKBUF_UNLOCK(&so->so_rcv);
5674 /* we possibly have data we can read */
5675 /* sa_ignore FREED_MEMORY */
5676 control = TAILQ_FIRST(&inp->read_queue);
5677 if (control == NULL) {
5679 * This could be happening since the appender did the
5680 * increment but as not yet did the tailq insert onto the
5683 if (hold_rlock == 0) {
5684 SCTP_INP_READ_LOCK(inp);
5686 control = TAILQ_FIRST(&inp->read_queue);
5687 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5689 panic("Huh, its non zero and nothing on control?");
5691 so->so_rcv.sb_cc = 0;
5693 SCTP_INP_READ_UNLOCK(inp);
5698 if ((control->length == 0) &&
5699 (control->do_not_ref_stcb)) {
5701 * Clean up code for freeing assoc that left behind a
5702 * pdapi.. maybe a peer in EEOR that just closed after
5703 * sending and never indicated a EOR.
5705 if (hold_rlock == 0) {
5707 SCTP_INP_READ_LOCK(inp);
5709 control->held_length = 0;
5710 if (control->data) {
5711 /* Hmm there is data here .. fix */
5715 m_tmp = control->data;
5717 cnt += SCTP_BUF_LEN(m_tmp);
5718 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5719 control->tail_mbuf = m_tmp;
5720 control->end_added = 1;
5722 m_tmp = SCTP_BUF_NEXT(m_tmp);
5724 control->length = cnt;
5727 TAILQ_REMOVE(&inp->read_queue, control, next);
5728 /* Add back any hiddend data */
5729 sctp_free_remote_addr(control->whoFrom);
5730 sctp_free_a_readq(stcb, control);
5734 SCTP_INP_READ_UNLOCK(inp);
5738 if ((control->length == 0) &&
5739 (control->end_added == 1)) {
5741 * Do we also need to check for (control->pdapi_aborted ==
5744 if (hold_rlock == 0) {
5746 SCTP_INP_READ_LOCK(inp);
5748 TAILQ_REMOVE(&inp->read_queue, control, next);
5749 if (control->data) {
5751 panic("control->data not null but control->length == 0");
5753 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5754 sctp_m_freem(control->data);
5755 control->data = NULL;
5758 if (control->aux_data) {
5759 sctp_m_free(control->aux_data);
5760 control->aux_data = NULL;
5763 if (control->on_strm_q) {
5764 panic("About to free ctl:%p so:%p and its in %d",
5765 control, so, control->on_strm_q);
5768 sctp_free_remote_addr(control->whoFrom);
5769 sctp_free_a_readq(stcb, control);
5772 SCTP_INP_READ_UNLOCK(inp);
5776 if (control->length == 0) {
5777 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5779 /* find a more suitable one then this */
5780 ctl = TAILQ_NEXT(control, next);
5782 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5784 (ctl->spec_flags & M_NOTIFICATION) ||
5785 ((ctl->do_not_ref_stcb == 0) &&
5786 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5789 * If we have a different TCB next, and there is data
5790 * present. If we have already taken some (pdapi), OR we can
5791 * ref the tcb and no delivery as started on this stream, we
5792 * take it. Note we allow a notification on a different
5793 * assoc to be delivered..
5797 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5799 ((ctl->some_taken) ||
5800 ((ctl->do_not_ref_stcb == 0) &&
5801 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5802 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5804 * If we have the same tcb, and there is data present, and we
5805 * have the strm interleave feature present. Then if we have
5806 * taken some (pdapi) or we can refer to tht tcb AND we have
5807 * not started a delivery for this stream, we can take it.
5808 * Note we do NOT allow a notificaiton on the same assoc to
5814 ctl = TAILQ_NEXT(ctl, next);
5818 * if we reach here, not suitable replacement is available
5819 * <or> fragment interleave is NOT on. So stuff the sb_cc
5820 * into the our held count, and its time to sleep again.
5822 held_length = so->so_rcv.sb_cc;
5823 control->held_length = so->so_rcv.sb_cc;
5826 /* Clear the held length since there is something to read */
5827 control->held_length = 0;
5830 * If we reach here, control has a some data for us to read off.
5831 * Note that stcb COULD be NULL.
5833 if (hold_rlock == 0) {
5835 SCTP_INP_READ_LOCK(inp);
5837 control->some_taken++;
5838 stcb = control->stcb;
5840 if ((control->do_not_ref_stcb == 0) &&
5841 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5842 if (freecnt_applied == 0)
5844 } else if (control->do_not_ref_stcb == 0) {
5845 /* you can't free it on me please */
5847 * The lock on the socket buffer protects us so the
5848 * free code will stop. But since we used the
5849 * socketbuf lock and the sender uses the tcb_lock
5850 * to increment, we need to use the atomic add to
5853 if (freecnt_applied) {
5855 panic("refcnt already incremented");
5857 SCTP_PRINTF("refcnt already incremented?\n");
5860 atomic_add_int(&stcb->asoc.refcnt, 1);
5861 freecnt_applied = 1;
5864 * Setup to remember how much we have not yet told
5865 * the peer our rwnd has opened up. Note we grab the
5866 * value from the tcb from last time. Note too that
5867 * sack sending clears this when a sack is sent,
5868 * which is fine. Once we hit the rwnd_req, we then
5869 * will go to the sctp_user_rcvd() that will not
5870 * lock until it KNOWs it MUST send a WUP-SACK.
5872 freed_so_far = (uint32_t)stcb->freed_by_sorcv_sincelast;
5873 stcb->freed_by_sorcv_sincelast = 0;
5877 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5878 control->do_not_ref_stcb == 0) {
5879 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5882 /* First lets get off the sinfo and sockaddr info */
5883 if ((sinfo != NULL) && (filling_sinfo != 0)) {
5884 sinfo->sinfo_stream = control->sinfo_stream;
5885 sinfo->sinfo_ssn = (uint16_t)control->mid;
5886 sinfo->sinfo_flags = control->sinfo_flags;
5887 sinfo->sinfo_ppid = control->sinfo_ppid;
5888 sinfo->sinfo_context = control->sinfo_context;
5889 sinfo->sinfo_timetolive = control->sinfo_timetolive;
5890 sinfo->sinfo_tsn = control->sinfo_tsn;
5891 sinfo->sinfo_cumtsn = control->sinfo_cumtsn;
5892 sinfo->sinfo_assoc_id = control->sinfo_assoc_id;
5893 nxt = TAILQ_NEXT(control, next);
5894 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5895 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5896 struct sctp_extrcvinfo *s_extra;
5898 s_extra = (struct sctp_extrcvinfo *)sinfo;
5901 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5902 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5903 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5905 if (nxt->spec_flags & M_NOTIFICATION) {
5906 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5908 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5909 s_extra->serinfo_next_length = nxt->length;
5910 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5911 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5912 if (nxt->tail_mbuf != NULL) {
5913 if (nxt->end_added) {
5914 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5919 * we explicitly 0 this, since the memcpy
5920 * got some other things beyond the older
5921 * sinfo_ that is on the control's structure
5925 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5926 s_extra->serinfo_next_aid = 0;
5927 s_extra->serinfo_next_length = 0;
5928 s_extra->serinfo_next_ppid = 0;
5929 s_extra->serinfo_next_stream = 0;
5933 * update off the real current cum-ack, if we have an stcb.
5935 if ((control->do_not_ref_stcb == 0) && stcb)
5936 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5938 * mask off the high bits, we keep the actual chunk bits in
5941 sinfo->sinfo_flags &= 0x00ff;
5942 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5943 sinfo->sinfo_flags |= SCTP_UNORDERED;
5946 #ifdef SCTP_ASOCLOG_OF_TSNS
5948 int index, newindex;
5949 struct sctp_pcbtsn_rlog *entry;
5952 index = inp->readlog_index;
5953 newindex = index + 1;
5954 if (newindex >= SCTP_READ_LOG_SIZE) {
5957 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5958 entry = &inp->readlog[index];
5959 entry->vtag = control->sinfo_assoc_id;
5960 entry->strm = control->sinfo_stream;
5961 entry->seq = (uint16_t)control->mid;
5962 entry->sz = control->length;
5963 entry->flgs = control->sinfo_flags;
5966 if ((fromlen > 0) && (from != NULL)) {
5967 union sctp_sockstore store;
5970 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5973 len = sizeof(struct sockaddr_in6);
5974 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5975 store.sin6.sin6_port = control->port_from;
5981 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5982 len = sizeof(struct sockaddr_in6);
5983 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5985 store.sin6.sin6_port = control->port_from;
5987 len = sizeof(struct sockaddr_in);
5988 store.sin = control->whoFrom->ro._l_addr.sin;
5989 store.sin.sin_port = control->port_from;
5992 len = sizeof(struct sockaddr_in);
5993 store.sin = control->whoFrom->ro._l_addr.sin;
5994 store.sin.sin_port = control->port_from;
6002 memcpy(from, &store, min((size_t)fromlen, len));
6005 struct sockaddr_in6 lsa6, *from6;
6007 from6 = (struct sockaddr_in6 *)from;
6008 sctp_recover_scope_mac(from6, (&lsa6));
6013 SCTP_INP_READ_UNLOCK(inp);
6017 SOCKBUF_UNLOCK(&so->so_rcv);
6020 /* now copy out what data we can */
6022 /* copy out each mbuf in the chain up to length */
6026 /* Move out all we can */
6027 cp_len = uio->uio_resid;
6028 my_len = SCTP_BUF_LEN(m);
6029 if (cp_len > my_len) {
6030 /* not enough in this buf */
6034 SCTP_INP_READ_UNLOCK(inp);
6038 error = uiomove(mtod(m, char *), (int)cp_len, uio);
6040 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
6044 if ((control->do_not_ref_stcb == 0) && stcb &&
6045 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
6049 /* error we are out of here */
6052 SCTP_INP_READ_LOCK(inp);
6054 if (cp_len == SCTP_BUF_LEN(m)) {
6055 if ((SCTP_BUF_NEXT(m) == NULL) &&
6056 (control->end_added)) {
6057 out_flags |= MSG_EOR;
6058 if ((control->do_not_ref_stcb == 0) &&
6059 (control->stcb != NULL) &&
6060 ((control->spec_flags & M_NOTIFICATION) == 0))
6061 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6063 if (control->spec_flags & M_NOTIFICATION) {
6064 out_flags |= MSG_NOTIFICATION;
6066 /* we ate up the mbuf */
6067 if (in_flags & MSG_PEEK) {
6069 m = SCTP_BUF_NEXT(m);
6070 copied_so_far += cp_len;
6072 /* dispose of the mbuf */
6073 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6074 sctp_sblog(&so->so_rcv,
6075 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6077 sctp_sbfree(control, stcb, &so->so_rcv, m);
6078 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6079 sctp_sblog(&so->so_rcv,
6080 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6082 copied_so_far += cp_len;
6083 freed_so_far += (uint32_t)cp_len;
6084 freed_so_far += MSIZE;
6085 atomic_subtract_int(&control->length, cp_len);
6086 control->data = sctp_m_free(m);
6089 * been through it all, must hold sb
6090 * lock ok to null tail
6092 if (control->data == NULL) {
6094 if ((control->end_added == 0) ||
6095 (TAILQ_NEXT(control, next) == NULL)) {
6103 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
6104 panic("Hmm we don't own the lock?");
6108 control->tail_mbuf = NULL;
6110 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
6111 panic("end_added, nothing left and no MSG_EOR");
6117 /* Do we need to trim the mbuf? */
6118 if (control->spec_flags & M_NOTIFICATION) {
6119 out_flags |= MSG_NOTIFICATION;
6121 if ((in_flags & MSG_PEEK) == 0) {
6122 SCTP_BUF_RESV_UF(m, cp_len);
6123 SCTP_BUF_LEN(m) -= (int)cp_len;
6124 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6125 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, (int)cp_len);
6127 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
6128 if ((control->do_not_ref_stcb == 0) &&
6130 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
6132 copied_so_far += cp_len;
6133 freed_so_far += (uint32_t)cp_len;
6134 freed_so_far += MSIZE;
6135 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6136 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
6137 SCTP_LOG_SBRESULT, 0);
6139 atomic_subtract_int(&control->length, cp_len);
6141 copied_so_far += cp_len;
6144 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
6147 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
6148 (control->do_not_ref_stcb == 0) &&
6149 (freed_so_far >= rwnd_req)) {
6150 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6152 } /* end while(m) */
6154 * At this point we have looked at it all and we either have
6155 * a MSG_EOR/or read all the user wants... <OR>
6156 * control->length == 0.
6158 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
6159 /* we are done with this control */
6160 if (control->length == 0) {
6161 if (control->data) {
6163 panic("control->data not null at read eor?");
6165 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
6166 sctp_m_freem(control->data);
6167 control->data = NULL;
6171 if (hold_rlock == 0) {
6172 SCTP_INP_READ_LOCK(inp);
6175 TAILQ_REMOVE(&inp->read_queue, control, next);
6176 /* Add back any hiddend data */
6177 if (control->held_length) {
6179 control->held_length = 0;
6180 wakeup_read_socket = 1;
6182 if (control->aux_data) {
6183 sctp_m_free(control->aux_data);
6184 control->aux_data = NULL;
6186 no_rcv_needed = control->do_not_ref_stcb;
6187 sctp_free_remote_addr(control->whoFrom);
6188 control->data = NULL;
6190 if (control->on_strm_q) {
6191 panic("About to free ctl:%p so:%p and its in %d",
6192 control, so, control->on_strm_q);
6195 sctp_free_a_readq(stcb, control);
6197 if ((freed_so_far >= rwnd_req) &&
6198 (no_rcv_needed == 0))
6199 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6203 * The user did not read all of this
6204 * message, turn off the returned MSG_EOR
6205 * since we are leaving more behind on the
6209 if (control->end_added &&
6210 (control->data == NULL) &&
6211 (control->tail_mbuf == NULL)) {
6212 panic("Gak, control->length is corrupt?");
6215 no_rcv_needed = control->do_not_ref_stcb;
6216 out_flags &= ~MSG_EOR;
6219 if (out_flags & MSG_EOR) {
6222 if ((uio->uio_resid == 0) ||
6224 (copied_so_far >= max(so->so_rcv.sb_lowat, 1)))) {
6228 * If I hit here the receiver wants more and this message is
6229 * NOT done (pd-api). So two questions. Can we block? if not
6230 * we are done. Did the user NOT set MSG_WAITALL?
6232 if (block_allowed == 0) {
6236 * We need to wait for more data a few things: - We don't
6237 * sbunlock() so we don't get someone else reading. - We
6238 * must be sure to account for the case where what is added
6239 * is NOT to our control when we wakeup.
6243 * Do we need to tell the transport a rwnd update might be
6244 * needed before we go to sleep?
6246 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
6247 ((freed_so_far >= rwnd_req) &&
6248 (control->do_not_ref_stcb == 0) &&
6249 (no_rcv_needed == 0))) {
6250 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6253 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
6257 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
6260 if (hold_rlock == 1) {
6261 SCTP_INP_READ_UNLOCK(inp);
6264 if (hold_sblock == 0) {
6265 SOCKBUF_LOCK(&so->so_rcv);
6268 if ((copied_so_far) && (control->length == 0) &&
6269 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
6272 if (so->so_rcv.sb_cc <= control->held_length) {
6273 error = sbwait(&so->so_rcv);
6277 control->held_length = 0;
6280 SOCKBUF_UNLOCK(&so->so_rcv);
6283 if (control->length == 0) {
6284 /* still nothing here */
6285 if (control->end_added == 1) {
6286 /* he aborted, or is done i.e.did a shutdown */
6287 out_flags |= MSG_EOR;
6288 if (control->pdapi_aborted) {
6289 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6290 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6292 out_flags |= MSG_TRUNC;
6294 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6295 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6297 goto done_with_control;
6299 if (so->so_rcv.sb_cc > held_length) {
6300 control->held_length = so->so_rcv.sb_cc;
6303 goto wait_some_more;
6304 } else if (control->data == NULL) {
6306 * we must re-sync since data is probably being
6309 SCTP_INP_READ_LOCK(inp);
6310 if ((control->length > 0) && (control->data == NULL)) {
6312 * big trouble.. we have the lock and its
6316 panic("Impossible data==NULL length !=0");
6318 out_flags |= MSG_EOR;
6319 out_flags |= MSG_TRUNC;
6320 control->length = 0;
6321 SCTP_INP_READ_UNLOCK(inp);
6322 goto done_with_control;
6324 SCTP_INP_READ_UNLOCK(inp);
6325 /* We will fall around to get more data */
6330 * Give caller back the mbuf chain,
6331 * store in uio_resid the length
6333 wakeup_read_socket = 0;
6334 if ((control->end_added == 0) ||
6335 (TAILQ_NEXT(control, next) == NULL)) {
6336 /* Need to get rlock */
6337 if (hold_rlock == 0) {
6338 SCTP_INP_READ_LOCK(inp);
6342 if (control->end_added) {
6343 out_flags |= MSG_EOR;
6344 if ((control->do_not_ref_stcb == 0) &&
6345 (control->stcb != NULL) &&
6346 ((control->spec_flags & M_NOTIFICATION) == 0))
6347 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6349 if (control->spec_flags & M_NOTIFICATION) {
6350 out_flags |= MSG_NOTIFICATION;
6352 uio->uio_resid = control->length;
6353 *mp = control->data;
6356 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6357 sctp_sblog(&so->so_rcv,
6358 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6360 sctp_sbfree(control, stcb, &so->so_rcv, m);
6361 freed_so_far += (uint32_t)SCTP_BUF_LEN(m);
6362 freed_so_far += MSIZE;
6363 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6364 sctp_sblog(&so->so_rcv,
6365 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6367 m = SCTP_BUF_NEXT(m);
6369 control->data = control->tail_mbuf = NULL;
6370 control->length = 0;
6371 if (out_flags & MSG_EOR) {
6372 /* Done with this control */
6373 goto done_with_control;
6377 if (hold_rlock == 1) {
6378 SCTP_INP_READ_UNLOCK(inp);
6381 if (hold_sblock == 1) {
6382 SOCKBUF_UNLOCK(&so->so_rcv);
6386 sbunlock(&so->so_rcv);
6391 SOCKBUF_UNLOCK(&so->so_rcv);
6394 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6395 if ((freed_so_far >= rwnd_req) &&
6396 (control && (control->do_not_ref_stcb == 0)) &&
6397 (no_rcv_needed == 0))
6398 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6402 *msg_flags = out_flags;
6404 if (((out_flags & MSG_EOR) == 0) &&
6405 ((in_flags & MSG_PEEK) == 0) &&
6407 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6408 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6409 struct sctp_extrcvinfo *s_extra;
6411 s_extra = (struct sctp_extrcvinfo *)sinfo;
6412 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6414 if (hold_rlock == 1) {
6415 SCTP_INP_READ_UNLOCK(inp);
6418 SOCKBUF_UNLOCK(&so->so_rcv);
6421 sbunlock(&so->so_rcv);
6424 if (freecnt_applied) {
6426 * The lock on the socket buffer protects us so the free
6427 * code will stop. But since we used the socketbuf lock and
6428 * the sender uses the tcb_lock to increment, we need to use
6429 * the atomic add to the refcnt.
6433 panic("stcb for refcnt has gone NULL?");
6439 /* Save the value back for next time */
6440 stcb->freed_by_sorcv_sincelast = freed_so_far;
6441 atomic_add_int(&stcb->asoc.refcnt, -1);
6443 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6445 sctp_misc_ints(SCTP_SORECV_DONE,
6447 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6451 sctp_misc_ints(SCTP_SORECV_DONE,
6453 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6459 if (wakeup_read_socket) {
6460 sctp_sorwakeup(inp, so);
6465 #ifdef SCTP_MBUF_LOGGING
6467 sctp_m_free(struct mbuf *m)
6469 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6470 sctp_log_mb(m, SCTP_MBUF_IFREE);
6476 sctp_m_freem(struct mbuf *mb)
6479 mb = sctp_m_free(mb);
6485 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6488 * Given a local address. For all associations that holds the
6489 * address, request a peer-set-primary.
6491 struct sctp_ifa *ifa;
6492 struct sctp_laddr *wi;
6494 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
6496 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6497 return (EADDRNOTAVAIL);
6500 * Now that we have the ifa we must awaken the iterator with this
6503 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6505 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6508 /* Now incr the count and int wi structure */
6509 SCTP_INCR_LADDR_COUNT();
6510 memset(wi, 0, sizeof(*wi));
6511 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6513 wi->action = SCTP_SET_PRIM_ADDR;
6514 atomic_add_int(&ifa->refcount, 1);
6516 /* Now add it to the work queue */
6517 SCTP_WQ_ADDR_LOCK();
6519 * Should this really be a tailq? As it is we will process the
6522 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6523 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6524 (struct sctp_inpcb *)NULL,
6525 (struct sctp_tcb *)NULL,
6526 (struct sctp_nets *)NULL);
6527 SCTP_WQ_ADDR_UNLOCK();
6532 sctp_soreceive(struct socket *so,
6533 struct sockaddr **psa,
6536 struct mbuf **controlp,
6540 uint8_t sockbuf[256];
6541 struct sockaddr *from;
6542 struct sctp_extrcvinfo sinfo;
6543 int filling_sinfo = 1;
6545 struct sctp_inpcb *inp;
6547 inp = (struct sctp_inpcb *)so->so_pcb;
6548 /* pickup the assoc we are reading from */
6550 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6553 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6554 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6555 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6556 (controlp == NULL)) {
6557 /* user does not want the sndrcv ctl */
6561 from = (struct sockaddr *)sockbuf;
6562 fromlen = sizeof(sockbuf);
6569 if (filling_sinfo) {
6570 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6572 if (flagsp != NULL) {
6577 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, &flags,
6578 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6579 if (flagsp != NULL) {
6582 if (controlp != NULL) {
6583 /* copy back the sinfo in a CMSG format */
6584 if (filling_sinfo && ((flags & MSG_NOTIFICATION) == 0)) {
6585 *controlp = sctp_build_ctl_nchunk(inp,
6586 (struct sctp_sndrcvinfo *)&sinfo);
6592 /* copy back the address info */
6593 if (from && from->sa_len) {
6594 *psa = sodupsockaddr(from, M_NOWAIT);
6603 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6604 int totaddr, int *error)
6608 struct sctp_inpcb *inp;
6609 struct sockaddr *sa;
6612 struct sockaddr_in *sin;
6615 struct sockaddr_in6 *sin6;
6619 inp = stcb->sctp_ep;
6621 for (i = 0; i < totaddr; i++) {
6622 switch (sa->sa_family) {
6625 incr = sizeof(struct sockaddr_in);
6626 sin = (struct sockaddr_in *)sa;
6627 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6628 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6629 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6630 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6631 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6632 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6636 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6637 SCTP_DONOT_SETSCOPE,
6638 SCTP_ADDR_IS_CONFIRMED)) {
6639 /* assoc gone no un-lock */
6640 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6641 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6642 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6651 incr = sizeof(struct sockaddr_in6);
6652 sin6 = (struct sockaddr_in6 *)sa;
6653 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6654 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6655 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6656 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6657 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6661 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6662 SCTP_DONOT_SETSCOPE,
6663 SCTP_ADDR_IS_CONFIRMED)) {
6664 /* assoc gone no un-lock */
6665 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6666 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6667 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6677 sa = (struct sockaddr *)((caddr_t)sa + incr);
6684 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6685 unsigned int totaddr,
6686 unsigned int *num_v4, unsigned int *num_v6,
6689 struct sockaddr *sa;
6690 struct sctp_tcb *stcb;
6691 unsigned int incr, at, i;
6695 *num_v6 = *num_v4 = 0;
6696 /* account and validate addresses */
6700 for (i = 0; i < totaddr; i++) {
6701 if (at + sizeof(struct sockaddr) > limit) {
6704 switch (sa->sa_family) {
6707 incr = (unsigned int)sizeof(struct sockaddr_in);
6708 if (sa->sa_len != incr) {
6717 struct sockaddr_in6 *sin6;
6719 sin6 = (struct sockaddr_in6 *)sa;
6720 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6721 /* Must be non-mapped for connectx */
6724 incr = (unsigned int)sizeof(struct sockaddr_in6);
6725 if (sa->sa_len != incr) {
6735 if ((at + incr) > limit) {
6738 SCTP_INP_INCR_REF(inp);
6739 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6741 SCTP_TCB_UNLOCK(stcb);
6744 SCTP_INP_DECR_REF(inp);
6747 sa = (struct sockaddr *)((caddr_t)sa + incr);
6753 * sctp_bindx(ADD) for one address.
6754 * assumes all arguments are valid/checked by caller.
6757 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6758 struct sockaddr *sa, uint32_t vrf_id, int *error,
6761 #if defined(INET) && defined(INET6)
6762 struct sockaddr_in sin;
6765 struct sockaddr_in6 *sin6;
6768 struct sockaddr_in *sinp;
6770 struct sockaddr *addr_to_use;
6771 struct sctp_inpcb *lep;
6774 /* see if we're bound all already! */
6775 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6776 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6780 switch (sa->sa_family) {
6783 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6784 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6788 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6789 /* can only bind v6 on PF_INET6 sockets */
6790 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6794 sin6 = (struct sockaddr_in6 *)sa;
6795 port = sin6->sin6_port;
6797 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6798 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6799 SCTP_IPV6_V6ONLY(inp)) {
6800 /* can't bind v4-mapped on PF_INET sockets */
6801 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6805 in6_sin6_2_sin(&sin, sin6);
6806 addr_to_use = (struct sockaddr *)&sin;
6817 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6818 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6822 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6823 SCTP_IPV6_V6ONLY(inp)) {
6824 /* can't bind v4 on PF_INET sockets */
6825 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6829 sinp = (struct sockaddr_in *)sa;
6830 port = sinp->sin_port;
6835 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6839 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6841 /* Can't get proc for Net/Open BSD */
6842 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6846 *error = sctp_inpcb_bind(so, addr_to_use, NULL, p);
6849 /* Validate the incoming port. */
6850 if ((port != 0) && (port != inp->sctp_lport)) {
6851 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6855 lep = sctp_pcb_findep(addr_to_use, 1, 0, vrf_id);
6857 /* add the address */
6858 *error = sctp_addr_mgmt_ep_sa(inp, addr_to_use,
6859 SCTP_ADD_IP_ADDRESS, vrf_id);
6862 *error = EADDRINUSE;
6864 SCTP_INP_DECR_REF(lep);
6869 * sctp_bindx(DELETE) for one address.
6870 * assumes all arguments are valid/checked by caller.
6873 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6874 struct sockaddr *sa, uint32_t vrf_id, int *error)
6876 struct sockaddr *addr_to_use;
6877 #if defined(INET) && defined(INET6)
6878 struct sockaddr_in6 *sin6;
6879 struct sockaddr_in sin;
6882 /* see if we're bound all already! */
6883 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6884 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6888 switch (sa->sa_family) {
6891 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6892 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6896 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6897 /* can only bind v6 on PF_INET6 sockets */
6898 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6903 sin6 = (struct sockaddr_in6 *)sa;
6904 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6905 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6906 SCTP_IPV6_V6ONLY(inp)) {
6907 /* can't bind mapped-v4 on PF_INET sockets */
6908 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6912 in6_sin6_2_sin(&sin, sin6);
6913 addr_to_use = (struct sockaddr *)&sin;
6924 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6925 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6929 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6930 SCTP_IPV6_V6ONLY(inp)) {
6931 /* can't bind v4 on PF_INET sockets */
6932 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6940 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6944 /* No lock required mgmt_ep_sa does its own locking. */
6945 *error = sctp_addr_mgmt_ep_sa(inp, addr_to_use, SCTP_DEL_IP_ADDRESS,
6950 * returns the valid local address count for an assoc, taking into account
6954 sctp_local_addr_count(struct sctp_tcb *stcb)
6958 int ipv4_local_scope, ipv4_addr_legal;
6961 int local_scope, site_scope, ipv6_addr_legal;
6963 struct sctp_vrf *vrf;
6964 struct sctp_ifn *sctp_ifn;
6965 struct sctp_ifa *sctp_ifa;
6968 /* Turn on all the appropriate scopes */
6969 loopback_scope = stcb->asoc.scope.loopback_scope;
6971 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6972 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6975 local_scope = stcb->asoc.scope.local_scope;
6976 site_scope = stcb->asoc.scope.site_scope;
6977 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6979 SCTP_IPI_ADDR_RLOCK();
6980 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6982 /* no vrf, no addresses */
6983 SCTP_IPI_ADDR_RUNLOCK();
6987 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6989 * bound all case: go through all ifns on the vrf
6991 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6992 if ((loopback_scope == 0) &&
6993 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6996 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6997 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6999 switch (sctp_ifa->address.sa.sa_family) {
7002 if (ipv4_addr_legal) {
7003 struct sockaddr_in *sin;
7005 sin = &sctp_ifa->address.sin;
7006 if (sin->sin_addr.s_addr == 0) {
7013 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
7014 &sin->sin_addr) != 0) {
7017 if ((ipv4_local_scope == 0) &&
7018 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
7021 /* count this one */
7030 if (ipv6_addr_legal) {
7031 struct sockaddr_in6 *sin6;
7033 sin6 = &sctp_ifa->address.sin6;
7034 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
7037 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
7038 &sin6->sin6_addr) != 0) {
7041 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
7042 if (local_scope == 0)
7044 if (sin6->sin6_scope_id == 0) {
7045 if (sa6_recoverscope(sin6) != 0)
7058 if ((site_scope == 0) &&
7059 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
7062 /* count this one */
7077 struct sctp_laddr *laddr;
7079 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
7081 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
7084 /* count this one */
7088 SCTP_IPI_ADDR_RUNLOCK();
7092 #if defined(SCTP_LOCAL_TRACE_BUF)
7095 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)
7097 uint32_t saveindex, newindex;
7100 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
7101 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
7104 newindex = saveindex + 1;
7106 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
7107 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
7110 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
7111 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
7112 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
7113 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
7114 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
7115 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
7116 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
7117 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
7122 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
7123 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
7127 struct ip6_hdr *ip6;
7129 struct mbuf *sp, *last;
7130 struct udphdr *uhdr;
7133 if ((m->m_flags & M_PKTHDR) == 0) {
7134 /* Can't handle one that is not a pkt hdr */
7137 /* Pull the src port */
7138 iph = mtod(m, struct ip *);
7139 uhdr = (struct udphdr *)((caddr_t)iph + off);
7140 port = uhdr->uh_sport;
7142 * Split out the mbuf chain. Leave the IP header in m, place the
7145 sp = m_split(m, off, M_NOWAIT);
7147 /* Gak, drop packet, we can't do a split */
7150 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
7151 /* Gak, packet can't have an SCTP header in it - too small */
7155 /* Now pull up the UDP header and SCTP header together */
7156 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
7158 /* Gak pullup failed */
7161 /* Trim out the UDP header */
7162 m_adj(sp, sizeof(struct udphdr));
7164 /* Now reconstruct the mbuf chain */
7165 for (last = m; last->m_next; last = last->m_next);
7167 m->m_pkthdr.len += sp->m_pkthdr.len;
7169 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
7170 * checksum and it was valid. Since CSUM_DATA_VALID ==
7171 * CSUM_SCTP_VALID this would imply that the HW also verified the
7172 * SCTP checksum. Therefore, clear the bit.
7174 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
7175 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
7177 if_name(m->m_pkthdr.rcvif),
7178 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
7179 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
7180 iph = mtod(m, struct ip *);
7181 switch (iph->ip_v) {
7184 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
7185 sctp_input_with_port(m, off, port);
7189 case IPV6_VERSION >> 4:
7190 ip6 = mtod(m, struct ip6_hdr *);
7191 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
7192 sctp6_input_with_port(&m, &off, port);
7206 sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED)
7208 struct ip *outer_ip, *inner_ip;
7212 struct sctp_inpcb *inp;
7213 struct sctp_tcb *stcb;
7214 struct sctp_nets *net;
7215 struct sctp_init_chunk *ch;
7216 struct sockaddr_in src, dst;
7219 inner_ip = (struct ip *)vip;
7220 icmp = (struct icmp *)((caddr_t)inner_ip -
7221 (sizeof(struct icmp) - sizeof(struct ip)));
7222 outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
7223 if (ntohs(outer_ip->ip_len) <
7224 sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
7227 udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
7228 sh = (struct sctphdr *)(udp + 1);
7229 memset(&src, 0, sizeof(struct sockaddr_in));
7230 src.sin_family = AF_INET;
7231 src.sin_len = sizeof(struct sockaddr_in);
7232 src.sin_port = sh->src_port;
7233 src.sin_addr = inner_ip->ip_src;
7234 memset(&dst, 0, sizeof(struct sockaddr_in));
7235 dst.sin_family = AF_INET;
7236 dst.sin_len = sizeof(struct sockaddr_in);
7237 dst.sin_port = sh->dest_port;
7238 dst.sin_addr = inner_ip->ip_dst;
7240 * 'dst' holds the dest of the packet that failed to be sent. 'src'
7241 * holds our local endpoint address. Thus we reverse the dst and the
7242 * src in the lookup.
7246 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7247 (struct sockaddr *)&src,
7249 SCTP_DEFAULT_VRFID);
7250 if ((stcb != NULL) &&
7253 /* Check the UDP port numbers */
7254 if ((udp->uh_dport != net->port) ||
7255 (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7256 SCTP_TCB_UNLOCK(stcb);
7259 /* Check the verification tag */
7260 if (ntohl(sh->v_tag) != 0) {
7262 * This must be the verification tag used for
7263 * sending out packets. We don't consider packets
7264 * reflecting the verification tag.
7266 if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
7267 SCTP_TCB_UNLOCK(stcb);
7271 if (ntohs(outer_ip->ip_len) >=
7273 8 + (inner_ip->ip_hl << 2) + 8 + 20) {
7275 * In this case we can check if we got an
7276 * INIT chunk and if the initiate tag
7279 ch = (struct sctp_init_chunk *)(sh + 1);
7280 if ((ch->ch.chunk_type != SCTP_INITIATION) ||
7281 (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
7282 SCTP_TCB_UNLOCK(stcb);
7286 SCTP_TCB_UNLOCK(stcb);
7290 type = icmp->icmp_type;
7291 code = icmp->icmp_code;
7292 if ((type == ICMP_UNREACH) &&
7293 (code == ICMP_UNREACH_PORT)) {
7294 code = ICMP_UNREACH_PROTOCOL;
7296 sctp_notify(inp, stcb, net, type, code,
7297 ntohs(inner_ip->ip_len),
7298 (uint32_t)ntohs(icmp->icmp_nextmtu));
7300 if ((stcb == NULL) && (inp != NULL)) {
7301 /* reduce ref-count */
7302 SCTP_INP_WLOCK(inp);
7303 SCTP_INP_DECR_REF(inp);
7304 SCTP_INP_WUNLOCK(inp);
7307 SCTP_TCB_UNLOCK(stcb);
7316 sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED)
7318 struct ip6ctlparam *ip6cp;
7319 struct sctp_inpcb *inp;
7320 struct sctp_tcb *stcb;
7321 struct sctp_nets *net;
7324 struct sockaddr_in6 src, dst;
7327 ip6cp = (struct ip6ctlparam *)d;
7329 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid.
7331 if (ip6cp->ip6c_m == NULL) {
7335 * Check if we can safely examine the ports and the verification tag
7336 * of the SCTP common header.
7338 if (ip6cp->ip6c_m->m_pkthdr.len <
7339 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) {
7342 /* Copy out the UDP header. */
7343 memset(&udp, 0, sizeof(struct udphdr));
7344 m_copydata(ip6cp->ip6c_m,
7346 sizeof(struct udphdr),
7348 /* Copy out the port numbers and the verification tag. */
7349 memset(&sh, 0, sizeof(struct sctphdr));
7350 m_copydata(ip6cp->ip6c_m,
7351 ip6cp->ip6c_off + sizeof(struct udphdr),
7352 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
7354 memset(&src, 0, sizeof(struct sockaddr_in6));
7355 src.sin6_family = AF_INET6;
7356 src.sin6_len = sizeof(struct sockaddr_in6);
7357 src.sin6_port = sh.src_port;
7358 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
7359 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7362 memset(&dst, 0, sizeof(struct sockaddr_in6));
7363 dst.sin6_family = AF_INET6;
7364 dst.sin6_len = sizeof(struct sockaddr_in6);
7365 dst.sin6_port = sh.dest_port;
7366 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
7367 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7372 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7373 (struct sockaddr *)&src,
7374 &inp, &net, 1, SCTP_DEFAULT_VRFID);
7375 if ((stcb != NULL) &&
7378 /* Check the UDP port numbers */
7379 if ((udp.uh_dport != net->port) ||
7380 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7381 SCTP_TCB_UNLOCK(stcb);
7384 /* Check the verification tag */
7385 if (ntohl(sh.v_tag) != 0) {
7387 * This must be the verification tag used for
7388 * sending out packets. We don't consider packets
7389 * reflecting the verification tag.
7391 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
7392 SCTP_TCB_UNLOCK(stcb);
7396 if (ip6cp->ip6c_m->m_pkthdr.len >=
7397 ip6cp->ip6c_off + sizeof(struct udphdr) +
7398 sizeof(struct sctphdr) +
7399 sizeof(struct sctp_chunkhdr) +
7400 offsetof(struct sctp_init, a_rwnd)) {
7402 * In this case we can check if we got an
7403 * INIT chunk and if the initiate tag
7406 uint32_t initiate_tag;
7409 m_copydata(ip6cp->ip6c_m,
7411 sizeof(struct udphdr) +
7412 sizeof(struct sctphdr),
7414 (caddr_t)&chunk_type);
7415 m_copydata(ip6cp->ip6c_m,
7417 sizeof(struct udphdr) +
7418 sizeof(struct sctphdr) +
7419 sizeof(struct sctp_chunkhdr),
7421 (caddr_t)&initiate_tag);
7422 if ((chunk_type != SCTP_INITIATION) ||
7423 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
7424 SCTP_TCB_UNLOCK(stcb);
7428 SCTP_TCB_UNLOCK(stcb);
7432 type = ip6cp->ip6c_icmp6->icmp6_type;
7433 code = ip6cp->ip6c_icmp6->icmp6_code;
7434 if ((type == ICMP6_DST_UNREACH) &&
7435 (code == ICMP6_DST_UNREACH_NOPORT)) {
7436 type = ICMP6_PARAM_PROB;
7437 code = ICMP6_PARAMPROB_NEXTHEADER;
7439 sctp6_notify(inp, stcb, net, type, code,
7440 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
7442 if ((stcb == NULL) && (inp != NULL)) {
7443 /* reduce inp's ref-count */
7444 SCTP_INP_WLOCK(inp);
7445 SCTP_INP_DECR_REF(inp);
7446 SCTP_INP_WUNLOCK(inp);
7449 SCTP_TCB_UNLOCK(stcb);
7456 sctp_over_udp_stop(void)
7459 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7463 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7464 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7465 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7469 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7470 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7471 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7477 sctp_over_udp_start(void)
7482 struct sockaddr_in sin;
7485 struct sockaddr_in6 sin6;
7488 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7491 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7492 if (ntohs(port) == 0) {
7493 /* Must have a port set */
7497 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7498 /* Already running -- must stop first */
7503 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7504 /* Already running -- must stop first */
7509 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7510 SOCK_DGRAM, IPPROTO_UDP,
7511 curthread->td_ucred, curthread))) {
7512 sctp_over_udp_stop();
7515 /* Call the special UDP hook. */
7516 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7517 sctp_recv_udp_tunneled_packet,
7518 sctp_recv_icmp_tunneled_packet,
7520 sctp_over_udp_stop();
7523 /* Ok, we have a socket, bind it to the port. */
7524 memset(&sin, 0, sizeof(struct sockaddr_in));
7525 sin.sin_len = sizeof(struct sockaddr_in);
7526 sin.sin_family = AF_INET;
7527 sin.sin_port = htons(port);
7528 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7529 (struct sockaddr *)&sin, curthread))) {
7530 sctp_over_udp_stop();
7535 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7536 SOCK_DGRAM, IPPROTO_UDP,
7537 curthread->td_ucred, curthread))) {
7538 sctp_over_udp_stop();
7541 /* Call the special UDP hook. */
7542 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7543 sctp_recv_udp_tunneled_packet,
7544 sctp_recv_icmp6_tunneled_packet,
7546 sctp_over_udp_stop();
7549 /* Ok, we have a socket, bind it to the port. */
7550 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7551 sin6.sin6_len = sizeof(struct sockaddr_in6);
7552 sin6.sin6_family = AF_INET6;
7553 sin6.sin6_port = htons(port);
7554 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7555 (struct sockaddr *)&sin6, curthread))) {
7556 sctp_over_udp_stop();
7564 * sctp_min_mtu ()returns the minimum of all non-zero arguments.
7565 * If all arguments are zero, zero is returned.
7568 sctp_min_mtu(uint32_t mtu1, uint32_t mtu2, uint32_t mtu3)
7573 return (min(mtu1, min(mtu2, mtu3)));
7575 return (min(mtu1, mtu2));
7579 return (min(mtu1, mtu3));
7587 return (min(mtu2, mtu3));
7598 sctp_hc_set_mtu(union sctp_sockstore *addr, uint16_t fibnum, uint32_t mtu)
7600 struct in_conninfo inc;
7602 memset(&inc, 0, sizeof(struct in_conninfo));
7603 inc.inc_fibnum = fibnum;
7604 switch (addr->sa.sa_family) {
7607 inc.inc_faddr = addr->sin.sin_addr;
7612 inc.inc_flags |= INC_ISIPV6;
7613 inc.inc6_faddr = addr->sin6.sin6_addr;
7619 tcp_hc_updatemtu(&inc, (u_long)mtu);
7623 sctp_hc_get_mtu(union sctp_sockstore *addr, uint16_t fibnum)
7625 struct in_conninfo inc;
7627 memset(&inc, 0, sizeof(struct in_conninfo));
7628 inc.inc_fibnum = fibnum;
7629 switch (addr->sa.sa_family) {
7632 inc.inc_faddr = addr->sin.sin_addr;
7637 inc.inc_flags |= INC_ISIPV6;
7638 inc.inc6_faddr = addr->sin6.sin6_addr;
7644 return ((uint32_t)tcp_hc_getmtu(&inc));
7648 sctp_set_state(struct sctp_tcb *stcb, int new_state)
7650 #if defined(KDTRACE_HOOKS)
7651 int old_state = stcb->asoc.state;
7654 KASSERT((new_state & ~SCTP_STATE_MASK) == 0,
7655 ("sctp_set_state: Can't set substate (new_state = %x)",
7657 stcb->asoc.state = (stcb->asoc.state & ~SCTP_STATE_MASK) | new_state;
7658 if ((new_state == SCTP_STATE_SHUTDOWN_RECEIVED) ||
7659 (new_state == SCTP_STATE_SHUTDOWN_SENT) ||
7660 (new_state == SCTP_STATE_SHUTDOWN_ACK_SENT)) {
7661 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_SHUTDOWN_PENDING);
7663 #if defined(KDTRACE_HOOKS)
7664 if (((old_state & SCTP_STATE_MASK) != new_state) &&
7665 !(((old_state & SCTP_STATE_MASK) == SCTP_STATE_EMPTY) &&
7666 (new_state == SCTP_STATE_INUSE))) {
7667 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);
7673 sctp_add_substate(struct sctp_tcb *stcb, int substate)
7675 #if defined(KDTRACE_HOOKS)
7676 int old_state = stcb->asoc.state;
7679 KASSERT((substate & SCTP_STATE_MASK) == 0,
7680 ("sctp_add_substate: Can't set state (substate = %x)",
7682 stcb->asoc.state |= substate;
7683 #if defined(KDTRACE_HOOKS)
7684 if (((substate & SCTP_STATE_ABOUT_TO_BE_FREED) &&
7685 ((old_state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) ||
7686 ((substate & SCTP_STATE_SHUTDOWN_PENDING) &&
7687 ((old_state & SCTP_STATE_SHUTDOWN_PENDING) == 0))) {
7688 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);