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(&(inp->sctp_socket->so_rcv.sb_mtx));
380 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
381 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
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) {
741 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
742 if ((chk->whoTo == lnet) &&
743 (chk->sent < SCTP_DATAGRAM_RESEND)) {
744 tot_out += chk->book_size;
747 if (lnet->flight_size != tot_out) {
748 SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
749 (void *)lnet, lnet->flight_size,
751 lnet->flight_size = tot_out;
756 sctp_print_audit_report();
761 sctp_audit_log(uint8_t ev, uint8_t fd)
764 sctp_audit_data[sctp_audit_indx][0] = ev;
765 sctp_audit_data[sctp_audit_indx][1] = fd;
767 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
775 * The conversion from time to ticks and vice versa is done by rounding
776 * upwards. This way we can test in the code the time to be positive and
777 * know that this corresponds to a positive number of ticks.
781 sctp_msecs_to_ticks(uint32_t msecs)
789 temp = (((uint64_t)msecs * hz) + 999) / 1000;
790 if (temp > UINT32_MAX) {
793 ticks = (uint32_t)temp;
800 sctp_ticks_to_msecs(uint32_t ticks)
808 temp = (((uint64_t)ticks * 1000) + (hz - 1)) / hz;
809 if (temp > UINT32_MAX) {
812 msecs = (uint32_t)temp;
819 sctp_secs_to_ticks(uint32_t secs)
824 temp = (uint64_t)secs * hz;
825 if (temp > UINT32_MAX) {
828 ticks = (uint32_t)temp;
834 sctp_ticks_to_secs(uint32_t ticks)
839 temp = ((uint64_t)ticks + (hz - 1)) / hz;
840 if (temp > UINT32_MAX) {
843 secs = (uint32_t)temp;
849 * sctp_stop_timers_for_shutdown() should be called
850 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
851 * state to make sure that all timers are stopped.
854 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
856 struct sctp_inpcb *inp;
857 struct sctp_nets *net;
861 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, inp, stcb, NULL,
862 SCTP_FROM_SCTPUTIL + SCTP_LOC_12);
863 sctp_timer_stop(SCTP_TIMER_TYPE_STRRESET, inp, stcb, NULL,
864 SCTP_FROM_SCTPUTIL + SCTP_LOC_13);
865 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, inp, stcb, NULL,
866 SCTP_FROM_SCTPUTIL + SCTP_LOC_14);
867 sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL,
868 SCTP_FROM_SCTPUTIL + SCTP_LOC_15);
869 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
870 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
871 SCTP_FROM_SCTPUTIL + SCTP_LOC_16);
872 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
873 SCTP_FROM_SCTPUTIL + SCTP_LOC_17);
878 sctp_stop_association_timers(struct sctp_tcb *stcb, bool stop_assoc_kill_timer)
880 struct sctp_inpcb *inp;
881 struct sctp_nets *net;
884 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, inp, stcb, NULL,
885 SCTP_FROM_SCTPUTIL + SCTP_LOC_18);
886 sctp_timer_stop(SCTP_TIMER_TYPE_STRRESET, inp, stcb, NULL,
887 SCTP_FROM_SCTPUTIL + SCTP_LOC_19);
888 if (stop_assoc_kill_timer) {
889 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
890 SCTP_FROM_SCTPUTIL + SCTP_LOC_20);
892 sctp_timer_stop(SCTP_TIMER_TYPE_ASCONF, inp, stcb, NULL,
893 SCTP_FROM_SCTPUTIL + SCTP_LOC_21);
894 sctp_timer_stop(SCTP_TIMER_TYPE_AUTOCLOSE, inp, stcb, NULL,
895 SCTP_FROM_SCTPUTIL + SCTP_LOC_22);
896 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWNGUARD, inp, stcb, NULL,
897 SCTP_FROM_SCTPUTIL + SCTP_LOC_23);
898 /* Mobility adaptation */
899 sctp_timer_stop(SCTP_TIMER_TYPE_PRIM_DELETED, inp, stcb, NULL,
900 SCTP_FROM_SCTPUTIL + SCTP_LOC_24);
901 TAILQ_FOREACH(net, &stcb->asoc.nets, sctp_next) {
902 sctp_timer_stop(SCTP_TIMER_TYPE_SEND, inp, stcb, net,
903 SCTP_FROM_SCTPUTIL + SCTP_LOC_25);
904 sctp_timer_stop(SCTP_TIMER_TYPE_INIT, inp, stcb, net,
905 SCTP_FROM_SCTPUTIL + SCTP_LOC_26);
906 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWN, inp, stcb, net,
907 SCTP_FROM_SCTPUTIL + SCTP_LOC_27);
908 sctp_timer_stop(SCTP_TIMER_TYPE_COOKIE, inp, stcb, net,
909 SCTP_FROM_SCTPUTIL + SCTP_LOC_28);
910 sctp_timer_stop(SCTP_TIMER_TYPE_SHUTDOWNACK, inp, stcb, net,
911 SCTP_FROM_SCTPUTIL + SCTP_LOC_29);
912 sctp_timer_stop(SCTP_TIMER_TYPE_PATHMTURAISE, inp, stcb, net,
913 SCTP_FROM_SCTPUTIL + SCTP_LOC_30);
914 sctp_timer_stop(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net,
915 SCTP_FROM_SCTPUTIL + SCTP_LOC_31);
920 * A list of sizes based on typical mtu's, used only if next hop size not
921 * returned. These values MUST be multiples of 4 and MUST be ordered.
923 static uint32_t sctp_mtu_sizes[] = {
945 * Return the largest MTU in sctp_mtu_sizes smaller than val.
946 * If val is smaller than the minimum, just return the largest
947 * multiple of 4 smaller or equal to val.
948 * Ensure that the result is a multiple of 4.
951 sctp_get_prev_mtu(uint32_t val)
956 if (val <= sctp_mtu_sizes[0]) {
959 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
960 if (val <= sctp_mtu_sizes[i]) {
964 KASSERT((sctp_mtu_sizes[i - 1] & 0x00000003) == 0,
965 ("sctp_mtu_sizes[%u] not a multiple of 4", i - 1));
966 return (sctp_mtu_sizes[i - 1]);
970 * Return the smallest MTU in sctp_mtu_sizes larger than val.
971 * If val is larger than the maximum, just return the largest multiple of 4 smaller
973 * Ensure that the result is a multiple of 4.
976 sctp_get_next_mtu(uint32_t val)
978 /* select another MTU that is just bigger than this one */
982 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
983 if (val < sctp_mtu_sizes[i]) {
984 KASSERT((sctp_mtu_sizes[i] & 0x00000003) == 0,
985 ("sctp_mtu_sizes[%u] not a multiple of 4", i));
986 return (sctp_mtu_sizes[i]);
993 sctp_fill_random_store(struct sctp_pcb *m)
996 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
997 * our counter. The result becomes our good random numbers and we
998 * then setup to give these out. Note that we do no locking to
999 * protect this. This is ok, since if competing folks call this we
1000 * will get more gobbled gook in the random store which is what we
1001 * want. There is a danger that two guys will use the same random
1002 * numbers, but thats ok too since that is random as well :->
1005 (void)sctp_hmac(SCTP_HMAC, (uint8_t *)m->random_numbers,
1006 sizeof(m->random_numbers), (uint8_t *)&m->random_counter,
1007 sizeof(m->random_counter), (uint8_t *)m->random_store);
1008 m->random_counter++;
1012 sctp_select_initial_TSN(struct sctp_pcb *inp)
1015 * A true implementation should use random selection process to get
1016 * the initial stream sequence number, using RFC1750 as a good
1021 int store_at, new_store;
1023 if (inp->initial_sequence_debug != 0) {
1026 ret = inp->initial_sequence_debug;
1027 inp->initial_sequence_debug++;
1031 store_at = inp->store_at;
1032 new_store = store_at + sizeof(uint32_t);
1033 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
1036 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
1039 if (new_store == 0) {
1040 /* Refill the random store */
1041 sctp_fill_random_store(inp);
1043 p = &inp->random_store[store_at];
1050 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
1056 (void)SCTP_GETTIME_TIMEVAL(&now);
1059 x = sctp_select_initial_TSN(&inp->sctp_ep);
1061 /* we never use 0 */
1064 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
1072 sctp_map_assoc_state(int kernel_state)
1076 if (kernel_state & SCTP_STATE_WAS_ABORTED) {
1077 user_state = SCTP_CLOSED;
1078 } else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) {
1079 user_state = SCTP_SHUTDOWN_PENDING;
1081 switch (kernel_state & SCTP_STATE_MASK) {
1082 case SCTP_STATE_EMPTY:
1083 user_state = SCTP_CLOSED;
1085 case SCTP_STATE_INUSE:
1086 user_state = SCTP_CLOSED;
1088 case SCTP_STATE_COOKIE_WAIT:
1089 user_state = SCTP_COOKIE_WAIT;
1091 case SCTP_STATE_COOKIE_ECHOED:
1092 user_state = SCTP_COOKIE_ECHOED;
1094 case SCTP_STATE_OPEN:
1095 user_state = SCTP_ESTABLISHED;
1097 case SCTP_STATE_SHUTDOWN_SENT:
1098 user_state = SCTP_SHUTDOWN_SENT;
1100 case SCTP_STATE_SHUTDOWN_RECEIVED:
1101 user_state = SCTP_SHUTDOWN_RECEIVED;
1103 case SCTP_STATE_SHUTDOWN_ACK_SENT:
1104 user_state = SCTP_SHUTDOWN_ACK_SENT;
1107 user_state = SCTP_CLOSED;
1111 return (user_state);
1115 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1116 uint32_t override_tag, uint32_t vrf_id, uint16_t o_strms)
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;
1194 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
1195 sctp_select_initial_TSN(&inp->sctp_ep);
1196 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
1197 /* we are optimisitic here */
1198 asoc->peer_supports_nat = 0;
1199 asoc->sent_queue_retran_cnt = 0;
1202 asoc->last_net_cmt_send_started = NULL;
1204 /* This will need to be adjusted */
1205 asoc->last_acked_seq = asoc->init_seq_number - 1;
1206 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
1207 asoc->asconf_seq_in = asoc->last_acked_seq;
1209 /* here we are different, we hold the next one we expect */
1210 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
1212 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
1213 asoc->initial_rto = inp->sctp_ep.initial_rto;
1215 asoc->default_mtu = inp->sctp_ep.default_mtu;
1216 asoc->max_init_times = inp->sctp_ep.max_init_times;
1217 asoc->max_send_times = inp->sctp_ep.max_send_times;
1218 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
1219 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
1220 asoc->free_chunk_cnt = 0;
1222 asoc->iam_blocking = 0;
1223 asoc->context = inp->sctp_context;
1224 asoc->local_strreset_support = inp->local_strreset_support;
1225 asoc->def_send = inp->def_send;
1226 asoc->delayed_ack = sctp_ticks_to_msecs(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1227 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
1228 asoc->pr_sctp_cnt = 0;
1229 asoc->total_output_queue_size = 0;
1231 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1232 asoc->scope.ipv6_addr_legal = 1;
1233 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1234 asoc->scope.ipv4_addr_legal = 1;
1236 asoc->scope.ipv4_addr_legal = 0;
1239 asoc->scope.ipv6_addr_legal = 0;
1240 asoc->scope.ipv4_addr_legal = 1;
1243 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1244 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1246 asoc->smallest_mtu = inp->sctp_frag_point;
1247 asoc->minrto = inp->sctp_ep.sctp_minrto;
1248 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1250 asoc->stream_locked_on = 0;
1251 asoc->ecn_echo_cnt_onq = 0;
1252 asoc->stream_locked = 0;
1254 asoc->send_sack = 1;
1256 LIST_INIT(&asoc->sctp_restricted_addrs);
1258 TAILQ_INIT(&asoc->nets);
1259 TAILQ_INIT(&asoc->pending_reply_queue);
1260 TAILQ_INIT(&asoc->asconf_ack_sent);
1261 /* Setup to fill the hb random cache at first HB */
1262 asoc->hb_random_idx = 4;
1264 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1266 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1267 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1269 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1270 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1273 * Now the stream parameters, here we allocate space for all streams
1274 * that we request by default.
1276 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1278 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1279 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1281 if (asoc->strmout == NULL) {
1282 /* big trouble no memory */
1283 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1286 for (i = 0; i < asoc->streamoutcnt; i++) {
1288 * inbound side must be set to 0xffff, also NOTE when we get
1289 * the INIT-ACK back (for INIT sender) we MUST reduce the
1290 * count (streamoutcnt) but first check if we sent to any of
1291 * the upper streams that were dropped (if some were). Those
1292 * that were dropped must be notified to the upper layer as
1295 asoc->strmout[i].next_mid_ordered = 0;
1296 asoc->strmout[i].next_mid_unordered = 0;
1297 TAILQ_INIT(&asoc->strmout[i].outqueue);
1298 asoc->strmout[i].chunks_on_queues = 0;
1299 #if defined(SCTP_DETAILED_STR_STATS)
1300 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1301 asoc->strmout[i].abandoned_sent[j] = 0;
1302 asoc->strmout[i].abandoned_unsent[j] = 0;
1305 asoc->strmout[i].abandoned_sent[0] = 0;
1306 asoc->strmout[i].abandoned_unsent[0] = 0;
1308 asoc->strmout[i].sid = i;
1309 asoc->strmout[i].last_msg_incomplete = 0;
1310 asoc->strmout[i].state = SCTP_STREAM_OPENING;
1311 asoc->ss_functions.sctp_ss_init_stream(stcb, &asoc->strmout[i], NULL);
1313 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1315 /* Now the mapping array */
1316 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1317 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1319 if (asoc->mapping_array == NULL) {
1320 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1321 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1324 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1325 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1327 if (asoc->nr_mapping_array == NULL) {
1328 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1329 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1330 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1333 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1335 /* Now the init of the other outqueues */
1336 TAILQ_INIT(&asoc->free_chunks);
1337 TAILQ_INIT(&asoc->control_send_queue);
1338 TAILQ_INIT(&asoc->asconf_send_queue);
1339 TAILQ_INIT(&asoc->send_queue);
1340 TAILQ_INIT(&asoc->sent_queue);
1341 TAILQ_INIT(&asoc->resetHead);
1342 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1343 TAILQ_INIT(&asoc->asconf_queue);
1344 /* authentication fields */
1345 asoc->authinfo.random = NULL;
1346 asoc->authinfo.active_keyid = 0;
1347 asoc->authinfo.assoc_key = NULL;
1348 asoc->authinfo.assoc_keyid = 0;
1349 asoc->authinfo.recv_key = NULL;
1350 asoc->authinfo.recv_keyid = 0;
1351 LIST_INIT(&asoc->shared_keys);
1352 asoc->marked_retrans = 0;
1353 asoc->port = inp->sctp_ep.port;
1357 asoc->timoshutdown = 0;
1358 asoc->timoheartbeat = 0;
1359 asoc->timocookie = 0;
1360 asoc->timoshutdownack = 0;
1361 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1362 asoc->discontinuity_time = asoc->start_time;
1363 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1364 asoc->abandoned_unsent[i] = 0;
1365 asoc->abandoned_sent[i] = 0;
1368 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1369 * freed later when the association is freed.
1375 sctp_print_mapping_array(struct sctp_association *asoc)
1377 unsigned int i, limit;
1379 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1380 asoc->mapping_array_size,
1381 asoc->mapping_array_base_tsn,
1382 asoc->cumulative_tsn,
1383 asoc->highest_tsn_inside_map,
1384 asoc->highest_tsn_inside_nr_map);
1385 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1386 if (asoc->mapping_array[limit - 1] != 0) {
1390 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1391 for (i = 0; i < limit; i++) {
1392 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1396 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1397 if (asoc->nr_mapping_array[limit - 1]) {
1401 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1402 for (i = 0; i < limit; i++) {
1403 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1410 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1412 /* mapping array needs to grow */
1413 uint8_t *new_array1, *new_array2;
1416 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1417 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1418 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1419 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1420 /* can't get more, forget it */
1421 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1423 SCTP_FREE(new_array1, SCTP_M_MAP);
1426 SCTP_FREE(new_array2, SCTP_M_MAP);
1430 memset(new_array1, 0, new_size);
1431 memset(new_array2, 0, new_size);
1432 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1433 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1434 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1435 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1436 asoc->mapping_array = new_array1;
1437 asoc->nr_mapping_array = new_array2;
1438 asoc->mapping_array_size = new_size;
1444 sctp_iterator_work(struct sctp_iterator *it)
1446 struct epoch_tracker et;
1447 struct sctp_inpcb *tinp;
1448 int iteration_count = 0;
1452 NET_EPOCH_ENTER(et);
1453 SCTP_INP_INFO_RLOCK();
1454 SCTP_ITERATOR_LOCK();
1455 sctp_it_ctl.cur_it = it;
1457 SCTP_INP_RLOCK(it->inp);
1458 SCTP_INP_DECR_REF(it->inp);
1460 if (it->inp == NULL) {
1461 /* iterator is complete */
1463 sctp_it_ctl.cur_it = NULL;
1464 SCTP_ITERATOR_UNLOCK();
1465 SCTP_INP_INFO_RUNLOCK();
1466 if (it->function_atend != NULL) {
1467 (*it->function_atend) (it->pointer, it->val);
1469 SCTP_FREE(it, SCTP_M_ITER);
1477 SCTP_INP_RLOCK(it->inp);
1479 while (((it->pcb_flags) &&
1480 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1481 ((it->pcb_features) &&
1482 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1483 /* endpoint flags or features don't match, so keep looking */
1484 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1485 SCTP_INP_RUNLOCK(it->inp);
1486 goto done_with_iterator;
1489 it->inp = LIST_NEXT(it->inp, sctp_list);
1491 SCTP_INP_RUNLOCK(tinp);
1492 if (it->inp == NULL) {
1493 goto done_with_iterator;
1495 SCTP_INP_RLOCK(it->inp);
1497 /* now go through each assoc which is in the desired state */
1498 if (it->done_current_ep == 0) {
1499 if (it->function_inp != NULL)
1500 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1501 it->done_current_ep = 1;
1503 if (it->stcb == NULL) {
1504 /* run the per instance function */
1505 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1507 if ((inp_skip) || it->stcb == NULL) {
1508 if (it->function_inp_end != NULL) {
1509 inp_skip = (*it->function_inp_end) (it->inp,
1513 SCTP_INP_RUNLOCK(it->inp);
1517 SCTP_TCB_LOCK(it->stcb);
1518 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1519 /* not in the right state... keep looking */
1520 SCTP_TCB_UNLOCK(it->stcb);
1523 /* see if we have limited out the iterator loop */
1525 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1526 /* Pause to let others grab the lock */
1527 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1528 SCTP_TCB_UNLOCK(it->stcb);
1529 SCTP_INP_INCR_REF(it->inp);
1530 SCTP_INP_RUNLOCK(it->inp);
1531 SCTP_ITERATOR_UNLOCK();
1532 SCTP_INP_INFO_RUNLOCK();
1533 SCTP_INP_INFO_RLOCK();
1534 SCTP_ITERATOR_LOCK();
1535 if (sctp_it_ctl.iterator_flags) {
1536 /* We won't be staying here */
1537 SCTP_INP_DECR_REF(it->inp);
1538 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1539 if (sctp_it_ctl.iterator_flags &
1540 SCTP_ITERATOR_STOP_CUR_IT) {
1541 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1542 goto done_with_iterator;
1544 if (sctp_it_ctl.iterator_flags &
1545 SCTP_ITERATOR_STOP_CUR_INP) {
1546 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1549 /* If we reach here huh? */
1550 SCTP_PRINTF("Unknown it ctl flag %x\n",
1551 sctp_it_ctl.iterator_flags);
1552 sctp_it_ctl.iterator_flags = 0;
1554 SCTP_INP_RLOCK(it->inp);
1555 SCTP_INP_DECR_REF(it->inp);
1556 SCTP_TCB_LOCK(it->stcb);
1557 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1558 iteration_count = 0;
1560 KASSERT(it->inp == it->stcb->sctp_ep,
1561 ("%s: stcb %p does not belong to inp %p, but inp %p",
1562 __func__, it->stcb, it->inp, it->stcb->sctp_ep));
1564 /* run function on this one */
1565 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1568 * we lie here, it really needs to have its own type but
1569 * first I must verify that this won't effect things :-0
1571 if (it->no_chunk_output == 0)
1572 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1574 SCTP_TCB_UNLOCK(it->stcb);
1576 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1577 if (it->stcb == NULL) {
1578 /* Run last function */
1579 if (it->function_inp_end != NULL) {
1580 inp_skip = (*it->function_inp_end) (it->inp,
1586 SCTP_INP_RUNLOCK(it->inp);
1588 /* done with all assocs on this endpoint, move on to next endpoint */
1589 it->done_current_ep = 0;
1590 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1593 it->inp = LIST_NEXT(it->inp, sctp_list);
1596 if (it->inp == NULL) {
1597 goto done_with_iterator;
1599 goto select_a_new_ep;
1603 sctp_iterator_worker(void)
1605 struct sctp_iterator *it;
1607 /* This function is called with the WQ lock in place */
1608 sctp_it_ctl.iterator_running = 1;
1609 while ((it = TAILQ_FIRST(&sctp_it_ctl.iteratorhead)) != NULL) {
1610 /* now lets work on this one */
1611 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1612 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1613 CURVNET_SET(it->vn);
1614 sctp_iterator_work(it);
1616 SCTP_IPI_ITERATOR_WQ_LOCK();
1617 /* sa_ignore FREED_MEMORY */
1619 sctp_it_ctl.iterator_running = 0;
1625 sctp_handle_addr_wq(void)
1627 /* deal with the ADDR wq from the rtsock calls */
1628 struct sctp_laddr *wi, *nwi;
1629 struct sctp_asconf_iterator *asc;
1631 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1632 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1634 /* Try later, no memory */
1635 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1636 (struct sctp_inpcb *)NULL,
1637 (struct sctp_tcb *)NULL,
1638 (struct sctp_nets *)NULL);
1641 LIST_INIT(&asc->list_of_work);
1644 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1645 LIST_REMOVE(wi, sctp_nxt_addr);
1646 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1650 if (asc->cnt == 0) {
1651 SCTP_FREE(asc, SCTP_M_ASC_IT);
1655 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
1656 sctp_asconf_iterator_stcb,
1657 NULL, /* No ep end for boundall */
1658 SCTP_PCB_FLAGS_BOUNDALL,
1659 SCTP_PCB_ANY_FEATURES,
1660 SCTP_ASOC_ANY_STATE,
1662 sctp_asconf_iterator_end, NULL, 0);
1664 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
1666 * Freeing if we are stopping or put back on the
1669 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
1670 sctp_asconf_iterator_end(asc, 0);
1672 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
1673 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
1675 SCTP_FREE(asc, SCTP_M_ASC_IT);
1682 * The following table shows which pointers for the inp, stcb, or net are
1683 * stored for each timer after it was started.
1685 *|Name |Timer |inp |stcb|net |
1686 *|-----------------------------|-----------------------------|----|----|----|
1687 *|SCTP_TIMER_TYPE_SEND |net->rxt_timer |Yes |Yes |Yes |
1688 *|SCTP_TIMER_TYPE_INIT |net->rxt_timer |Yes |Yes |Yes |
1689 *|SCTP_TIMER_TYPE_RECV |stcb->asoc.dack_timer |Yes |Yes |No |
1690 *|SCTP_TIMER_TYPE_SHUTDOWN |net->rxt_timer |Yes |Yes |Yes |
1691 *|SCTP_TIMER_TYPE_HEARTBEAT |net->hb_timer |Yes |Yes |Yes |
1692 *|SCTP_TIMER_TYPE_COOKIE |net->rxt_timer |Yes |Yes |Yes |
1693 *|SCTP_TIMER_TYPE_NEWCOOKIE |inp->sctp_ep.signature_change|Yes |No |No |
1694 *|SCTP_TIMER_TYPE_PATHMTURAISE |net->pmtu_timer |Yes |Yes |Yes |
1695 *|SCTP_TIMER_TYPE_SHUTDOWNACK |net->rxt_timer |Yes |Yes |Yes |
1696 *|SCTP_TIMER_TYPE_ASCONF |stcb->asoc.asconf_timer |Yes |Yes |Yes |
1697 *|SCTP_TIMER_TYPE_SHUTDOWNGUARD|stcb->asoc.shut_guard_timer |Yes |Yes |No |
1698 *|SCTP_TIMER_TYPE_AUTOCLOSE |stcb->asoc.autoclose_timer |Yes |Yes |No |
1699 *|SCTP_TIMER_TYPE_STRRESET |stcb->asoc.strreset_timer |Yes |Yes |No |
1700 *|SCTP_TIMER_TYPE_INPKILL |inp->sctp_ep.signature_change|Yes |No |No |
1701 *|SCTP_TIMER_TYPE_ASOCKILL |stcb->asoc.strreset_timer |Yes |Yes |No |
1702 *|SCTP_TIMER_TYPE_ADDR_WQ |SCTP_BASE_INFO(addr_wq_timer)|No |No |No |
1703 *|SCTP_TIMER_TYPE_PRIM_DELETED |stcb->asoc.delete_prim_timer |Yes |Yes |No |
1707 sctp_timeout_handler(void *t)
1709 struct epoch_tracker et;
1711 struct sctp_inpcb *inp;
1712 struct sctp_tcb *stcb;
1713 struct sctp_nets *net;
1714 struct sctp_timer *tmr;
1715 struct mbuf *op_err;
1720 tmr = (struct sctp_timer *)t;
1721 inp = (struct sctp_inpcb *)tmr->ep;
1722 stcb = (struct sctp_tcb *)tmr->tcb;
1723 net = (struct sctp_nets *)tmr->net;
1724 CURVNET_SET((struct vnet *)tmr->vnet);
1727 #ifdef SCTP_AUDITING_ENABLED
1728 sctp_audit_log(0xF0, (uint8_t)tmr->type);
1729 sctp_auditing(3, inp, stcb, net);
1732 /* sanity checks... */
1733 KASSERT(tmr->self == NULL || tmr->self == tmr,
1734 ("sctp_timeout_handler: tmr->self corrupted"));
1735 KASSERT(SCTP_IS_TIMER_TYPE_VALID(tmr->type),
1736 ("sctp_timeout_handler: invalid timer type %d", tmr->type));
1738 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
1739 ("sctp_timeout_handler of type %d: inp = %p, stcb->sctp_ep %p",
1740 type, stcb, stcb->sctp_ep));
1742 SCTP_INP_INCR_REF(inp);
1744 tmr->stopped_from = 0xa001;
1746 atomic_add_int(&stcb->asoc.refcnt, 1);
1747 if (stcb->asoc.state == 0) {
1748 atomic_add_int(&stcb->asoc.refcnt, -1);
1750 SCTP_INP_DECR_REF(inp);
1752 SCTPDBG(SCTP_DEBUG_TIMER2,
1753 "Timer type %d handler exiting due to CLOSED association.\n",
1759 tmr->stopped_from = 0xa002;
1760 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d goes off.\n", type);
1761 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1763 SCTP_INP_DECR_REF(inp);
1766 atomic_add_int(&stcb->asoc.refcnt, -1);
1768 SCTPDBG(SCTP_DEBUG_TIMER2,
1769 "Timer type %d handler exiting due to not being active.\n",
1775 tmr->stopped_from = 0xa003;
1777 SCTP_TCB_LOCK(stcb);
1778 atomic_add_int(&stcb->asoc.refcnt, -1);
1779 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1780 ((stcb->asoc.state == 0) ||
1781 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1782 SCTP_TCB_UNLOCK(stcb);
1784 SCTP_INP_DECR_REF(inp);
1786 SCTPDBG(SCTP_DEBUG_TIMER2,
1787 "Timer type %d handler exiting due to CLOSED association.\n",
1792 } else if (inp != NULL) {
1793 SCTP_INP_WLOCK(inp);
1795 SCTP_WQ_ADDR_LOCK();
1798 /* Record in stopped_from which timeout occurred. */
1799 tmr->stopped_from = type;
1800 NET_EPOCH_ENTER(et);
1801 /* mark as being serviced now */
1802 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1804 * Callout has been rescheduled.
1808 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1810 * Not active, so no action.
1814 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1816 /* call the handler for the appropriate timer type */
1818 case SCTP_TIMER_TYPE_SEND:
1819 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1820 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1821 type, inp, stcb, net));
1822 SCTP_STAT_INCR(sctps_timodata);
1823 stcb->asoc.timodata++;
1824 stcb->asoc.num_send_timers_up--;
1825 if (stcb->asoc.num_send_timers_up < 0) {
1826 stcb->asoc.num_send_timers_up = 0;
1828 SCTP_TCB_LOCK_ASSERT(stcb);
1829 if (sctp_t3rxt_timer(inp, stcb, net)) {
1830 /* no need to unlock on tcb its gone */
1834 SCTP_TCB_LOCK_ASSERT(stcb);
1835 #ifdef SCTP_AUDITING_ENABLED
1836 sctp_auditing(4, inp, stcb, net);
1838 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1839 if ((stcb->asoc.num_send_timers_up == 0) &&
1840 (stcb->asoc.sent_queue_cnt > 0)) {
1841 struct sctp_tmit_chunk *chk;
1844 * Safeguard. If there on some on the sent queue
1845 * somewhere but no timers running something is
1846 * wrong... so we start a timer on the first chunk
1847 * on the send queue on whatever net it is sent to.
1849 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
1850 if (chk->whoTo != NULL) {
1855 sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, chk->whoTo);
1859 case SCTP_TIMER_TYPE_INIT:
1860 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1861 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1862 type, inp, stcb, net));
1863 SCTP_STAT_INCR(sctps_timoinit);
1864 stcb->asoc.timoinit++;
1865 if (sctp_t1init_timer(inp, stcb, net)) {
1866 /* no need to unlock on tcb its gone */
1869 /* We do output but not here */
1872 case SCTP_TIMER_TYPE_RECV:
1873 KASSERT(inp != NULL && stcb != NULL && net == NULL,
1874 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1875 type, inp, stcb, net));
1876 SCTP_STAT_INCR(sctps_timosack);
1877 stcb->asoc.timosack++;
1878 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1879 #ifdef SCTP_AUDITING_ENABLED
1880 sctp_auditing(4, inp, stcb, NULL);
1882 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1884 case SCTP_TIMER_TYPE_SHUTDOWN:
1885 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1886 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1887 type, inp, stcb, net));
1888 SCTP_STAT_INCR(sctps_timoshutdown);
1889 stcb->asoc.timoshutdown++;
1890 if (sctp_shutdown_timer(inp, stcb, net)) {
1891 /* no need to unlock on tcb its gone */
1894 #ifdef SCTP_AUDITING_ENABLED
1895 sctp_auditing(4, inp, stcb, net);
1897 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1899 case SCTP_TIMER_TYPE_HEARTBEAT:
1900 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1901 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1902 type, inp, stcb, net));
1903 SCTP_STAT_INCR(sctps_timoheartbeat);
1904 stcb->asoc.timoheartbeat++;
1905 if (sctp_heartbeat_timer(inp, stcb, net)) {
1906 /* no need to unlock on tcb its gone */
1909 #ifdef SCTP_AUDITING_ENABLED
1910 sctp_auditing(4, inp, stcb, net);
1912 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1913 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1914 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1917 case SCTP_TIMER_TYPE_COOKIE:
1918 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1919 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1920 type, inp, stcb, net));
1921 SCTP_STAT_INCR(sctps_timocookie);
1922 stcb->asoc.timocookie++;
1923 if (sctp_cookie_timer(inp, stcb, net)) {
1924 /* no need to unlock on tcb its gone */
1927 #ifdef SCTP_AUDITING_ENABLED
1928 sctp_auditing(4, inp, stcb, net);
1931 * We consider T3 and Cookie timer pretty much the same with
1932 * respect to where from in chunk_output.
1934 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1936 case SCTP_TIMER_TYPE_NEWCOOKIE:
1937 KASSERT(inp != NULL && stcb == NULL && net == NULL,
1938 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1939 type, inp, stcb, net));
1940 SCTP_STAT_INCR(sctps_timosecret);
1941 (void)SCTP_GETTIME_TIMEVAL(&tv);
1942 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1943 inp->sctp_ep.last_secret_number =
1944 inp->sctp_ep.current_secret_number;
1945 inp->sctp_ep.current_secret_number++;
1946 if (inp->sctp_ep.current_secret_number >=
1947 SCTP_HOW_MANY_SECRETS) {
1948 inp->sctp_ep.current_secret_number = 0;
1950 secret = (int)inp->sctp_ep.current_secret_number;
1951 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1952 inp->sctp_ep.secret_key[secret][i] =
1953 sctp_select_initial_TSN(&inp->sctp_ep);
1955 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
1958 case SCTP_TIMER_TYPE_PATHMTURAISE:
1959 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1960 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1961 type, inp, stcb, net));
1962 SCTP_STAT_INCR(sctps_timopathmtu);
1963 sctp_pathmtu_timer(inp, stcb, net);
1966 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1967 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1968 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1969 type, inp, stcb, net));
1970 if (sctp_shutdownack_timer(inp, stcb, net)) {
1971 /* no need to unlock on tcb its gone */
1974 SCTP_STAT_INCR(sctps_timoshutdownack);
1975 stcb->asoc.timoshutdownack++;
1976 #ifdef SCTP_AUDITING_ENABLED
1977 sctp_auditing(4, inp, stcb, net);
1979 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1981 case SCTP_TIMER_TYPE_ASCONF:
1982 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1983 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1984 type, inp, stcb, net));
1985 SCTP_STAT_INCR(sctps_timoasconf);
1986 if (sctp_asconf_timer(inp, stcb, net)) {
1987 /* no need to unlock on tcb its gone */
1990 #ifdef SCTP_AUDITING_ENABLED
1991 sctp_auditing(4, inp, stcb, net);
1993 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1995 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1996 KASSERT(inp != NULL && stcb != NULL && net == NULL,
1997 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1998 type, inp, stcb, net));
1999 SCTP_STAT_INCR(sctps_timoshutdownguard);
2000 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
2001 "Shutdown guard timer expired");
2002 sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
2003 /* no need to unlock on tcb its gone */
2005 case SCTP_TIMER_TYPE_AUTOCLOSE:
2006 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2007 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2008 type, inp, stcb, net));
2009 SCTP_STAT_INCR(sctps_timoautoclose);
2010 sctp_autoclose_timer(inp, stcb);
2011 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
2014 case SCTP_TIMER_TYPE_STRRESET:
2015 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2016 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2017 type, inp, stcb, net));
2018 SCTP_STAT_INCR(sctps_timostrmrst);
2019 if (sctp_strreset_timer(inp, stcb)) {
2020 /* no need to unlock on tcb its gone */
2023 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_INP_DECR_REF(inp);
2049 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
2050 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
2051 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
2052 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
2054 * free asoc, always unlocks (or destroy's) so prevent
2055 * duplicate unlock or unlock of a free mtx :-0
2059 case SCTP_TIMER_TYPE_ADDR_WQ:
2060 KASSERT(inp == NULL && stcb == NULL && net == NULL,
2061 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2062 type, inp, stcb, net));
2063 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);
2074 panic("Unknown timer type %d", type);
2079 #ifdef SCTP_AUDITING_ENABLED
2080 sctp_audit_log(0xF1, (uint8_t)type);
2082 sctp_auditing(5, inp, stcb, net);
2084 if ((did_output) && stcb) {
2086 * Now we need to clean up the control chunk chain if an
2087 * ECNE is on it. It must be marked as UNSENT again so next
2088 * call will continue to send it until such time that we get
2089 * a CWR, to remove it. It is, however, less likely that we
2090 * will find a ecn echo on the chain though.
2092 sctp_fix_ecn_echo(&stcb->asoc);
2096 SCTP_TCB_UNLOCK(stcb);
2097 } else if (inp != NULL) {
2098 SCTP_INP_WUNLOCK(inp);
2100 SCTP_WQ_ADDR_UNLOCK();
2105 SCTP_INP_DECR_REF(inp);
2109 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d handler finished.\n", type);
2115 * The following table shows which parameters must be provided
2116 * when calling sctp_timer_start(). For parameters not being
2117 * provided, NULL must be used.
2119 * |Name |inp |stcb|net |
2120 * |-----------------------------|----|----|----|
2121 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes |
2122 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes |
2123 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No |
2124 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes |
2125 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes |
2126 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes |
2127 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No |
2128 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes |
2129 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes |
2130 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |Yes |
2131 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No |
2132 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No |
2133 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |Yes |
2134 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No |
2135 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No |
2136 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No |
2137 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No |
2142 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2143 struct sctp_nets *net)
2145 struct sctp_timer *tmr;
2147 uint32_t rndval, jitter;
2149 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
2150 ("sctp_timer_start of type %d: inp = %p, stcb->sctp_ep %p",
2151 t_type, stcb, stcb->sctp_ep));
2155 SCTP_TCB_LOCK_ASSERT(stcb);
2156 } else if (inp != NULL) {
2157 SCTP_INP_WLOCK_ASSERT(inp);
2159 SCTP_WQ_ADDR_LOCK_ASSERT();
2163 * Don't restart timer on association that's about to be
2166 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
2167 (t_type != SCTP_TIMER_TYPE_ASOCKILL)) {
2168 SCTPDBG(SCTP_DEBUG_TIMER2,
2169 "Timer type %d not started: inp=%p, stcb=%p, net=%p (stcb deleted).\n",
2170 t_type, inp, stcb, net);
2173 /* Don't restart timer on net that's been removed. */
2174 if (net != NULL && (net->dest_state & SCTP_ADDR_BEING_DELETED)) {
2175 SCTPDBG(SCTP_DEBUG_TIMER2,
2176 "Timer type %d not started: inp=%p, stcb=%p, net=%p (net deleted).\n",
2177 t_type, inp, stcb, net);
2182 case SCTP_TIMER_TYPE_SEND:
2183 /* Here we use the RTO timer. */
2184 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2186 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2187 t_type, inp, stcb, net);
2192 tmr = &net->rxt_timer;
2193 if (net->RTO == 0) {
2194 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2196 to_ticks = sctp_msecs_to_ticks(net->RTO);
2199 case SCTP_TIMER_TYPE_INIT:
2201 * Here we use the INIT timer default usually about 1
2204 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2206 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2207 t_type, inp, stcb, net);
2212 tmr = &net->rxt_timer;
2213 if (net->RTO == 0) {
2214 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2216 to_ticks = sctp_msecs_to_ticks(net->RTO);
2219 case SCTP_TIMER_TYPE_RECV:
2221 * Here we use the Delayed-Ack timer value from the inp,
2222 * ususually about 200ms.
2224 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2226 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2227 t_type, inp, stcb, net);
2232 tmr = &stcb->asoc.dack_timer;
2233 to_ticks = sctp_msecs_to_ticks(stcb->asoc.delayed_ack);
2235 case SCTP_TIMER_TYPE_SHUTDOWN:
2236 /* Here we use the RTO of the destination. */
2237 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2239 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2240 t_type, inp, stcb, net);
2245 tmr = &net->rxt_timer;
2246 if (net->RTO == 0) {
2247 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2249 to_ticks = sctp_msecs_to_ticks(net->RTO);
2252 case SCTP_TIMER_TYPE_HEARTBEAT:
2254 * The net is used here so that we can add in the RTO. Even
2255 * though we use a different timer. We also add the HB timer
2256 * PLUS a random jitter.
2258 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2260 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2261 t_type, inp, stcb, net);
2266 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2267 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2268 SCTPDBG(SCTP_DEBUG_TIMER2,
2269 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n",
2270 t_type, inp, stcb, net);
2273 tmr = &net->hb_timer;
2274 if (net->RTO == 0) {
2275 to_ticks = stcb->asoc.initial_rto;
2277 to_ticks = net->RTO;
2279 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2280 jitter = rndval % to_ticks;
2281 if (jitter >= (to_ticks >> 1)) {
2282 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
2284 to_ticks = to_ticks - jitter;
2286 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2287 !(net->dest_state & SCTP_ADDR_PF)) {
2288 to_ticks += net->heart_beat_delay;
2291 * Now we must convert the to_ticks that are now in ms to
2294 to_ticks = sctp_msecs_to_ticks(to_ticks);
2296 case SCTP_TIMER_TYPE_COOKIE:
2298 * Here we can use the RTO timer from the network since one
2299 * RTT was complete. If a retransmission happened then we
2300 * will be using the RTO initial value.
2302 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2304 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2305 t_type, inp, stcb, net);
2310 tmr = &net->rxt_timer;
2311 if (net->RTO == 0) {
2312 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2314 to_ticks = sctp_msecs_to_ticks(net->RTO);
2317 case SCTP_TIMER_TYPE_NEWCOOKIE:
2319 * Nothing needed but the endpoint here ususually about 60
2322 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2324 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2325 t_type, inp, stcb, net);
2330 tmr = &inp->sctp_ep.signature_change;
2331 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2333 case SCTP_TIMER_TYPE_PATHMTURAISE:
2335 * Here we use the value found in the EP for PMTUD,
2336 * ususually about 10 minutes.
2338 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2340 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2341 t_type, inp, stcb, net);
2346 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2347 SCTPDBG(SCTP_DEBUG_TIMER2,
2348 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n",
2349 t_type, inp, stcb, net);
2352 tmr = &net->pmtu_timer;
2353 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2355 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2356 /* Here we use the RTO of the destination. */
2357 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2359 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2360 t_type, inp, stcb, net);
2365 tmr = &net->rxt_timer;
2366 if (net->RTO == 0) {
2367 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2369 to_ticks = sctp_msecs_to_ticks(net->RTO);
2372 case SCTP_TIMER_TYPE_ASCONF:
2374 * Here the timer comes from the stcb but its value is from
2377 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2379 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2380 t_type, inp, stcb, net);
2385 tmr = &stcb->asoc.asconf_timer;
2386 if (net->RTO == 0) {
2387 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2389 to_ticks = sctp_msecs_to_ticks(net->RTO);
2392 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2394 * Here we use the endpoints shutdown guard timer usually
2397 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2399 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2400 t_type, inp, stcb, net);
2405 tmr = &stcb->asoc.shut_guard_timer;
2406 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2407 if (stcb->asoc.maxrto < UINT32_MAX / 5) {
2408 to_ticks = sctp_msecs_to_ticks(5 * stcb->asoc.maxrto);
2410 to_ticks = sctp_msecs_to_ticks(UINT32_MAX);
2413 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2416 case SCTP_TIMER_TYPE_AUTOCLOSE:
2417 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2419 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2420 t_type, inp, stcb, net);
2425 tmr = &stcb->asoc.autoclose_timer;
2426 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2428 case SCTP_TIMER_TYPE_STRRESET:
2430 * Here the timer comes from the stcb but its value is from
2433 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2435 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2436 t_type, inp, stcb, net);
2441 tmr = &stcb->asoc.strreset_timer;
2442 if (net->RTO == 0) {
2443 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2445 to_ticks = sctp_msecs_to_ticks(net->RTO);
2448 case SCTP_TIMER_TYPE_INPKILL:
2450 * The inp is setup to die. We re-use the signature_chage
2451 * timer since that has stopped and we are in the GONE
2454 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2456 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2457 t_type, inp, stcb, net);
2462 tmr = &inp->sctp_ep.signature_change;
2463 to_ticks = sctp_msecs_to_ticks(SCTP_INP_KILL_TIMEOUT);
2465 case SCTP_TIMER_TYPE_ASOCKILL:
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 = &stcb->asoc.strreset_timer;
2475 to_ticks = sctp_msecs_to_ticks(SCTP_ASOC_KILL_TIMEOUT);
2477 case SCTP_TIMER_TYPE_ADDR_WQ:
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 /* Only 1 tick away :-) */
2487 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2488 to_ticks = SCTP_ADDRESS_TICK_DELAY;
2490 case SCTP_TIMER_TYPE_PRIM_DELETED:
2491 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2493 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2494 t_type, inp, stcb, net);
2499 tmr = &stcb->asoc.delete_prim_timer;
2500 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2504 panic("Unknown timer type %d", t_type);
2509 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type));
2510 KASSERT(to_ticks > 0, ("to_ticks == 0 for timer type %d", t_type));
2511 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2513 * We do NOT allow you to have it already running. If it is,
2514 * we leave the current one up unchanged.
2516 SCTPDBG(SCTP_DEBUG_TIMER2,
2517 "Timer type %d already running: inp=%p, stcb=%p, net=%p.\n",
2518 t_type, inp, stcb, net);
2521 /* At this point we can proceed. */
2522 if (t_type == SCTP_TIMER_TYPE_SEND) {
2523 stcb->asoc.num_send_timers_up++;
2525 tmr->stopped_from = 0;
2527 tmr->ep = (void *)inp;
2528 tmr->tcb = (void *)stcb;
2529 if (t_type == SCTP_TIMER_TYPE_STRRESET) {
2532 tmr->net = (void *)net;
2534 tmr->self = (void *)tmr;
2535 tmr->vnet = (void *)curvnet;
2536 tmr->ticks = sctp_get_tick_count();
2537 if (SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr) == 0) {
2538 SCTPDBG(SCTP_DEBUG_TIMER2,
2539 "Timer type %d started: ticks=%u, inp=%p, stcb=%p, net=%p.\n",
2540 t_type, to_ticks, inp, stcb, net);
2543 * This should not happen, since we checked for pending
2546 SCTPDBG(SCTP_DEBUG_TIMER2,
2547 "Timer type %d restarted: ticks=%u, inp=%p, stcb=%p, net=%p.\n",
2548 t_type, to_ticks, inp, stcb, net);
2554 * The following table shows which parameters must be provided
2555 * when calling sctp_timer_stop(). For parameters not being
2556 * provided, NULL must be used.
2558 * |Name |inp |stcb|net |
2559 * |-----------------------------|----|----|----|
2560 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes |
2561 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes |
2562 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No |
2563 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes |
2564 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes |
2565 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes |
2566 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No |
2567 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes |
2568 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes |
2569 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |No |
2570 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No |
2571 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No |
2572 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |No |
2573 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No |
2574 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No |
2575 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No |
2576 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No |
2581 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2582 struct sctp_nets *net, uint32_t from)
2584 struct sctp_timer *tmr;
2586 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
2587 ("sctp_timer_stop of type %d: inp = %p, stcb->sctp_ep %p",
2588 t_type, stcb, stcb->sctp_ep));
2590 SCTP_TCB_LOCK_ASSERT(stcb);
2591 } else if (inp != NULL) {
2592 SCTP_INP_WLOCK_ASSERT(inp);
2594 SCTP_WQ_ADDR_LOCK_ASSERT();
2598 case SCTP_TIMER_TYPE_SEND:
2599 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2601 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2602 t_type, inp, stcb, net);
2607 tmr = &net->rxt_timer;
2609 case SCTP_TIMER_TYPE_INIT:
2610 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2612 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2613 t_type, inp, stcb, net);
2618 tmr = &net->rxt_timer;
2620 case SCTP_TIMER_TYPE_RECV:
2621 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2623 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2624 t_type, inp, stcb, net);
2629 tmr = &stcb->asoc.dack_timer;
2631 case SCTP_TIMER_TYPE_SHUTDOWN:
2632 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2634 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2635 t_type, inp, stcb, net);
2640 tmr = &net->rxt_timer;
2642 case SCTP_TIMER_TYPE_HEARTBEAT:
2643 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2645 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2646 t_type, inp, stcb, net);
2651 tmr = &net->hb_timer;
2653 case SCTP_TIMER_TYPE_COOKIE:
2654 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2656 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2657 t_type, inp, stcb, net);
2662 tmr = &net->rxt_timer;
2664 case SCTP_TIMER_TYPE_NEWCOOKIE:
2665 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2667 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2668 t_type, inp, stcb, net);
2673 tmr = &inp->sctp_ep.signature_change;
2675 case SCTP_TIMER_TYPE_PATHMTURAISE:
2676 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2678 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2679 t_type, inp, stcb, net);
2684 tmr = &net->pmtu_timer;
2686 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2687 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2689 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2690 t_type, inp, stcb, net);
2695 tmr = &net->rxt_timer;
2697 case SCTP_TIMER_TYPE_ASCONF:
2698 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2700 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2701 t_type, inp, stcb, net);
2706 tmr = &stcb->asoc.asconf_timer;
2708 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2709 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2711 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2712 t_type, inp, stcb, net);
2717 tmr = &stcb->asoc.shut_guard_timer;
2719 case SCTP_TIMER_TYPE_AUTOCLOSE:
2720 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2722 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2723 t_type, inp, stcb, net);
2728 tmr = &stcb->asoc.autoclose_timer;
2730 case SCTP_TIMER_TYPE_STRRESET:
2731 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2733 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2734 t_type, inp, stcb, net);
2739 tmr = &stcb->asoc.strreset_timer;
2741 case SCTP_TIMER_TYPE_INPKILL:
2743 * The inp is setup to die. We re-use the signature_chage
2744 * timer since that has stopped and we are in the GONE
2747 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2749 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2750 t_type, inp, stcb, net);
2755 tmr = &inp->sctp_ep.signature_change;
2757 case SCTP_TIMER_TYPE_ASOCKILL:
2758 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2760 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2761 t_type, inp, stcb, net);
2766 tmr = &stcb->asoc.strreset_timer;
2768 case SCTP_TIMER_TYPE_ADDR_WQ:
2769 if ((inp != NULL) || (stcb != NULL) || (net != NULL)) {
2771 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2772 t_type, inp, stcb, net);
2777 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2779 case SCTP_TIMER_TYPE_PRIM_DELETED:
2780 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2782 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2783 t_type, inp, stcb, net);
2788 tmr = &stcb->asoc.delete_prim_timer;
2792 panic("Unknown timer type %d", t_type);
2797 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type));
2798 if ((tmr->type != SCTP_TIMER_TYPE_NONE) &&
2799 (tmr->type != t_type)) {
2801 * Ok we have a timer that is under joint use. Cookie timer
2802 * per chance with the SEND timer. We therefore are NOT
2803 * running the timer that the caller wants stopped. So just
2806 SCTPDBG(SCTP_DEBUG_TIMER2,
2807 "Shared timer type %d not running: inp=%p, stcb=%p, net=%p.\n",
2808 t_type, inp, stcb, net);
2811 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2812 stcb->asoc.num_send_timers_up--;
2813 if (stcb->asoc.num_send_timers_up < 0) {
2814 stcb->asoc.num_send_timers_up = 0;
2818 tmr->stopped_from = from;
2819 if (SCTP_OS_TIMER_STOP(&tmr->timer) == 1) {
2820 KASSERT(tmr->ep == inp,
2821 ("sctp_timer_stop of type %d: inp = %p, tmr->inp = %p",
2822 t_type, inp, tmr->ep));
2823 KASSERT(tmr->tcb == stcb,
2824 ("sctp_timer_stop of type %d: stcb = %p, tmr->stcb = %p",
2825 t_type, stcb, tmr->tcb));
2826 KASSERT(((t_type == SCTP_TIMER_TYPE_ASCONF) && (tmr->net != NULL)) ||
2827 ((t_type != SCTP_TIMER_TYPE_ASCONF) && (tmr->net == net)),
2828 ("sctp_timer_stop of type %d: net = %p, tmr->net = %p",
2829 t_type, net, tmr->net));
2830 SCTPDBG(SCTP_DEBUG_TIMER2,
2831 "Timer type %d stopped: inp=%p, stcb=%p, net=%p.\n",
2832 t_type, inp, stcb, net);
2837 SCTPDBG(SCTP_DEBUG_TIMER2,
2838 "Timer type %d not stopped: inp=%p, stcb=%p, net=%p.\n",
2839 t_type, inp, stcb, net);
2845 sctp_calculate_len(struct mbuf *m)
2852 tlen += SCTP_BUF_LEN(at);
2853 at = SCTP_BUF_NEXT(at);
2859 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2860 struct sctp_association *asoc, uint32_t mtu)
2863 * Reset the P-MTU size on this association, this involves changing
2864 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2865 * allow the DF flag to be cleared.
2867 struct sctp_tmit_chunk *chk;
2868 unsigned int eff_mtu, ovh;
2870 asoc->smallest_mtu = mtu;
2871 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2872 ovh = SCTP_MIN_OVERHEAD;
2874 ovh = SCTP_MIN_V4_OVERHEAD;
2876 eff_mtu = mtu - ovh;
2877 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2878 if (chk->send_size > eff_mtu) {
2879 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2882 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2883 if (chk->send_size > eff_mtu) {
2884 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2891 * Given an association and starting time of the current RTT period, update
2892 * RTO in number of msecs. net should point to the current network.
2893 * Return 1, if an RTO update was performed, return 0 if no update was
2894 * performed due to invalid starting point.
2898 sctp_calculate_rto(struct sctp_tcb *stcb,
2899 struct sctp_association *asoc,
2900 struct sctp_nets *net,
2901 struct timeval *old,
2905 uint64_t rtt_us; /* RTT in us */
2906 int32_t rtt; /* RTT in ms */
2908 int first_measure = 0;
2910 /************************/
2911 /* 1. calculate new RTT */
2912 /************************/
2913 /* get the current time */
2914 if (stcb->asoc.use_precise_time) {
2915 (void)SCTP_GETPTIME_TIMEVAL(&now);
2917 (void)SCTP_GETTIME_TIMEVAL(&now);
2919 if ((old->tv_sec > now.tv_sec) ||
2920 ((old->tv_sec == now.tv_sec) && (old->tv_usec > now.tv_usec))) {
2921 /* The starting point is in the future. */
2924 timevalsub(&now, old);
2925 rtt_us = (uint64_t)1000000 * (uint64_t)now.tv_sec + (uint64_t)now.tv_usec;
2926 if (rtt_us > SCTP_RTO_UPPER_BOUND * 1000) {
2927 /* The RTT is larger than a sane value. */
2930 /* store the current RTT in us */
2932 /* compute rtt in ms */
2933 rtt = (int32_t)(net->rtt / 1000);
2934 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2936 * Tell the CC module that a new update has just occurred
2939 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2942 * Do we need to determine the lan? We do this only on sacks i.e.
2943 * RTT being determined from data not non-data (HB/INIT->INITACK).
2945 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2946 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2947 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2948 net->lan_type = SCTP_LAN_INTERNET;
2950 net->lan_type = SCTP_LAN_LOCAL;
2954 /***************************/
2955 /* 2. update RTTVAR & SRTT */
2956 /***************************/
2958 * Compute the scaled average lastsa and the
2959 * scaled variance lastsv as described in van Jacobson
2960 * Paper "Congestion Avoidance and Control", Annex A.
2962 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2963 * (net->lastsv >> SCTP_RTT_VAR_SHIFT) is the rttvar
2965 if (net->RTO_measured) {
2966 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2971 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2973 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2974 rto_logging(net, SCTP_LOG_RTTVAR);
2977 /* First RTO measurment */
2978 net->RTO_measured = 1;
2980 net->lastsa = rtt << SCTP_RTT_SHIFT;
2981 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2982 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2983 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2986 if (net->lastsv == 0) {
2987 net->lastsv = SCTP_CLOCK_GRANULARITY;
2989 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2990 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2991 (stcb->asoc.sat_network_lockout == 0)) {
2992 stcb->asoc.sat_network = 1;
2993 } else if ((!first_measure) && stcb->asoc.sat_network) {
2994 stcb->asoc.sat_network = 0;
2995 stcb->asoc.sat_network_lockout = 1;
2997 /* bound it, per C6/C7 in Section 5.3.1 */
2998 if (new_rto < stcb->asoc.minrto) {
2999 new_rto = stcb->asoc.minrto;
3001 if (new_rto > stcb->asoc.maxrto) {
3002 new_rto = stcb->asoc.maxrto;
3009 * return a pointer to a contiguous piece of data from the given mbuf chain
3010 * starting at 'off' for 'len' bytes. If the desired piece spans more than
3011 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
3012 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
3015 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t *in_ptr)
3021 if ((off < 0) || (len <= 0))
3024 /* find the desired start location */
3025 while ((m != NULL) && (off > 0)) {
3026 if (off < SCTP_BUF_LEN(m))
3028 off -= SCTP_BUF_LEN(m);
3029 m = SCTP_BUF_NEXT(m);
3034 /* is the current mbuf large enough (eg. contiguous)? */
3035 if ((SCTP_BUF_LEN(m) - off) >= len) {
3036 return (mtod(m, caddr_t)+off);
3038 /* else, it spans more than one mbuf, so save a temp copy... */
3039 while ((m != NULL) && (len > 0)) {
3040 count = min(SCTP_BUF_LEN(m) - off, len);
3041 memcpy(ptr, mtod(m, caddr_t)+off, count);
3045 m = SCTP_BUF_NEXT(m);
3047 if ((m == NULL) && (len > 0))
3050 return ((caddr_t)in_ptr);
3056 struct sctp_paramhdr *
3057 sctp_get_next_param(struct mbuf *m,
3059 struct sctp_paramhdr *pull,
3062 /* This just provides a typed signature to Peter's Pull routine */
3063 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
3069 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
3071 struct mbuf *m_last;
3077 if (padlen <= M_TRAILINGSPACE(m)) {
3079 * The easy way. We hope the majority of the time we hit
3084 /* Hard way we must grow the mbuf chain */
3085 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
3086 if (m_last == NULL) {
3089 SCTP_BUF_LEN(m_last) = 0;
3090 SCTP_BUF_NEXT(m_last) = NULL;
3091 SCTP_BUF_NEXT(m) = m_last;
3093 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
3094 SCTP_BUF_LEN(m_last) += padlen;
3095 memset(dp, 0, padlen);
3100 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
3102 /* find the last mbuf in chain and pad it */
3105 if (last_mbuf != NULL) {
3106 return (sctp_add_pad_tombuf(last_mbuf, padval));
3108 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
3109 if (SCTP_BUF_NEXT(m_at) == NULL) {
3110 return (sctp_add_pad_tombuf(m_at, padval));
3118 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
3119 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked)
3121 struct mbuf *m_notify;
3122 struct sctp_assoc_change *sac;
3123 struct sctp_queued_to_read *control;
3124 unsigned int notif_len;
3131 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
3132 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
3133 if (abort != NULL) {
3134 abort_len = ntohs(abort->ch.chunk_length);
3136 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
3139 if (abort_len > SCTP_CHUNK_BUFFER_SIZE) {
3140 abort_len = SCTP_CHUNK_BUFFER_SIZE;
3145 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
3146 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
3147 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
3148 notif_len += abort_len;
3150 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3151 if (m_notify == NULL) {
3152 /* Retry with smaller value. */
3153 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
3154 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3155 if (m_notify == NULL) {
3159 SCTP_BUF_NEXT(m_notify) = NULL;
3160 sac = mtod(m_notify, struct sctp_assoc_change *);
3161 memset(sac, 0, notif_len);
3162 sac->sac_type = SCTP_ASSOC_CHANGE;
3164 sac->sac_length = sizeof(struct sctp_assoc_change);
3165 sac->sac_state = state;
3166 sac->sac_error = error;
3167 /* XXX verify these stream counts */
3168 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
3169 sac->sac_inbound_streams = stcb->asoc.streamincnt;
3170 sac->sac_assoc_id = sctp_get_associd(stcb);
3171 if (notif_len > sizeof(struct sctp_assoc_change)) {
3172 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
3174 if (stcb->asoc.prsctp_supported == 1) {
3175 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
3177 if (stcb->asoc.auth_supported == 1) {
3178 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
3180 if (stcb->asoc.asconf_supported == 1) {
3181 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
3183 if (stcb->asoc.idata_supported == 1) {
3184 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
3186 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
3187 if (stcb->asoc.reconfig_supported == 1) {
3188 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
3190 sac->sac_length += i;
3191 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
3192 memcpy(sac->sac_info, abort, abort_len);
3193 sac->sac_length += abort_len;
3196 SCTP_BUF_LEN(m_notify) = sac->sac_length;
3197 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3198 0, 0, stcb->asoc.context, 0, 0, 0,
3200 if (control != NULL) {
3201 control->length = SCTP_BUF_LEN(m_notify);
3202 control->spec_flags = M_NOTIFICATION;
3203 /* not that we need this */
3204 control->tail_mbuf = m_notify;
3205 sctp_add_to_readq(stcb->sctp_ep, stcb,
3207 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
3210 sctp_m_freem(m_notify);
3214 * For 1-to-1 style sockets, we send up and error when an ABORT
3218 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3219 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
3220 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
3221 SOCK_LOCK(stcb->sctp_socket);
3223 if (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) {
3224 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
3225 stcb->sctp_socket->so_error = ECONNREFUSED;
3227 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
3228 stcb->sctp_socket->so_error = ECONNRESET;
3231 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
3232 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
3233 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
3234 stcb->sctp_socket->so_error = ETIMEDOUT;
3236 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
3237 stcb->sctp_socket->so_error = ECONNABORTED;
3240 SOCK_UNLOCK(stcb->sctp_socket);
3242 /* Wake ANY sleepers */
3243 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3244 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
3245 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
3246 socantrcvmore(stcb->sctp_socket);
3248 sorwakeup(stcb->sctp_socket);
3249 sowwakeup(stcb->sctp_socket);
3253 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
3254 struct sockaddr *sa, uint32_t error, int so_locked)
3256 struct mbuf *m_notify;
3257 struct sctp_paddr_change *spc;
3258 struct sctp_queued_to_read *control;
3260 if ((stcb == NULL) ||
3261 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
3262 /* event not enabled */
3265 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
3266 if (m_notify == NULL)
3268 SCTP_BUF_LEN(m_notify) = 0;
3269 spc = mtod(m_notify, struct sctp_paddr_change *);
3270 memset(spc, 0, sizeof(struct sctp_paddr_change));
3271 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
3273 spc->spc_length = sizeof(struct sctp_paddr_change);
3274 switch (sa->sa_family) {
3278 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
3279 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
3280 (struct sockaddr_in6 *)&spc->spc_aaddr);
3282 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
3285 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
3292 struct sockaddr_in6 *sin6;
3294 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
3296 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
3297 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
3298 if (sin6->sin6_scope_id == 0) {
3299 /* recover scope_id for user */
3300 (void)sa6_recoverscope(sin6);
3302 /* clear embedded scope_id for user */
3303 in6_clearscope(&sin6->sin6_addr);
3313 spc->spc_state = state;
3314 spc->spc_error = error;
3315 spc->spc_assoc_id = sctp_get_associd(stcb);
3317 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
3318 SCTP_BUF_NEXT(m_notify) = NULL;
3320 /* append to socket */
3321 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3322 0, 0, stcb->asoc.context, 0, 0, 0,
3324 if (control == NULL) {
3326 sctp_m_freem(m_notify);
3329 control->length = SCTP_BUF_LEN(m_notify);
3330 control->spec_flags = M_NOTIFICATION;
3331 /* not that we need this */
3332 control->tail_mbuf = m_notify;
3333 sctp_add_to_readq(stcb->sctp_ep, stcb,
3335 &stcb->sctp_socket->so_rcv, 1,
3336 SCTP_READ_LOCK_NOT_HELD,
3342 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
3343 struct sctp_tmit_chunk *chk, int so_locked)
3345 struct mbuf *m_notify;
3346 struct sctp_send_failed *ssf;
3347 struct sctp_send_failed_event *ssfe;
3348 struct sctp_queued_to_read *control;
3349 struct sctp_chunkhdr *chkhdr;
3350 int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len;
3352 if ((stcb == NULL) ||
3353 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3354 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3355 /* event not enabled */
3359 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3360 notifhdr_len = sizeof(struct sctp_send_failed_event);
3362 notifhdr_len = sizeof(struct sctp_send_failed);
3364 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3365 if (m_notify == NULL)
3368 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3369 if (stcb->asoc.idata_supported) {
3370 chkhdr_len = sizeof(struct sctp_idata_chunk);
3372 chkhdr_len = sizeof(struct sctp_data_chunk);
3374 /* Use some defaults in case we can't access the chunk header */
3375 if (chk->send_size >= chkhdr_len) {
3376 payload_len = chk->send_size - chkhdr_len;
3381 if (chk->data != NULL) {
3382 chkhdr = mtod(chk->data, struct sctp_chunkhdr *);
3383 if (chkhdr != NULL) {
3384 chk_len = ntohs(chkhdr->chunk_length);
3385 if ((chk_len >= chkhdr_len) &&
3386 (chk->send_size >= chk_len) &&
3387 (chk->send_size - chk_len < 4)) {
3388 padding_len = chk->send_size - chk_len;
3389 payload_len = chk->send_size - chkhdr_len - padding_len;
3393 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3394 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3395 memset(ssfe, 0, notifhdr_len);
3396 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3398 ssfe->ssfe_flags = SCTP_DATA_SENT;
3400 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3402 ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len);
3403 ssfe->ssfe_error = error;
3404 /* not exactly what the user sent in, but should be close :) */
3405 ssfe->ssfe_info.snd_sid = chk->rec.data.sid;
3406 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
3407 ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid;
3408 ssfe->ssfe_info.snd_context = chk->rec.data.context;
3409 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3410 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3412 ssf = mtod(m_notify, struct sctp_send_failed *);
3413 memset(ssf, 0, notifhdr_len);
3414 ssf->ssf_type = SCTP_SEND_FAILED;
3416 ssf->ssf_flags = SCTP_DATA_SENT;
3418 ssf->ssf_flags = SCTP_DATA_UNSENT;
3420 ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len);
3421 ssf->ssf_error = error;
3422 /* not exactly what the user sent in, but should be close :) */
3423 ssf->ssf_info.sinfo_stream = chk->rec.data.sid;
3424 ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid;
3425 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
3426 ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid;
3427 ssf->ssf_info.sinfo_context = chk->rec.data.context;
3428 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3429 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3431 if (chk->data != NULL) {
3432 /* Trim off the sctp chunk header (it should be there) */
3433 if (chk->send_size == chkhdr_len + payload_len + padding_len) {
3434 m_adj(chk->data, chkhdr_len);
3435 m_adj(chk->data, -padding_len);
3436 sctp_mbuf_crush(chk->data);
3437 chk->send_size -= (chkhdr_len + padding_len);
3440 SCTP_BUF_NEXT(m_notify) = chk->data;
3441 /* Steal off the mbuf */
3444 * For this case, we check the actual socket buffer, since the assoc
3445 * is going away we don't want to overfill the socket buffer for a
3448 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3449 sctp_m_freem(m_notify);
3452 /* append to socket */
3453 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3454 0, 0, stcb->asoc.context, 0, 0, 0,
3456 if (control == NULL) {
3458 sctp_m_freem(m_notify);
3461 control->length = SCTP_BUF_LEN(m_notify);
3462 control->spec_flags = M_NOTIFICATION;
3463 /* not that we need this */
3464 control->tail_mbuf = m_notify;
3465 sctp_add_to_readq(stcb->sctp_ep, stcb,
3467 &stcb->sctp_socket->so_rcv, 1,
3468 SCTP_READ_LOCK_NOT_HELD,
3474 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3475 struct sctp_stream_queue_pending *sp, int so_locked)
3477 struct mbuf *m_notify;
3478 struct sctp_send_failed *ssf;
3479 struct sctp_send_failed_event *ssfe;
3480 struct sctp_queued_to_read *control;
3483 if ((stcb == NULL) ||
3484 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3485 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3486 /* event not enabled */
3489 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3490 notifhdr_len = sizeof(struct sctp_send_failed_event);
3492 notifhdr_len = sizeof(struct sctp_send_failed);
3494 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3495 if (m_notify == NULL) {
3499 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3500 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3501 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3502 memset(ssfe, 0, notifhdr_len);
3503 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3504 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3505 ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length);
3506 ssfe->ssfe_error = error;
3507 /* not exactly what the user sent in, but should be close :) */
3508 ssfe->ssfe_info.snd_sid = sp->sid;
3509 if (sp->some_taken) {
3510 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3512 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3514 ssfe->ssfe_info.snd_ppid = sp->ppid;
3515 ssfe->ssfe_info.snd_context = sp->context;
3516 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3517 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3519 ssf = mtod(m_notify, struct sctp_send_failed *);
3520 memset(ssf, 0, notifhdr_len);
3521 ssf->ssf_type = SCTP_SEND_FAILED;
3522 ssf->ssf_flags = SCTP_DATA_UNSENT;
3523 ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length);
3524 ssf->ssf_error = error;
3525 /* not exactly what the user sent in, but should be close :) */
3526 ssf->ssf_info.sinfo_stream = sp->sid;
3527 ssf->ssf_info.sinfo_ssn = 0;
3528 if (sp->some_taken) {
3529 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3531 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3533 ssf->ssf_info.sinfo_ppid = sp->ppid;
3534 ssf->ssf_info.sinfo_context = sp->context;
3535 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3536 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3538 SCTP_BUF_NEXT(m_notify) = sp->data;
3540 /* Steal off the mbuf */
3543 * For this case, we check the actual socket buffer, since the assoc
3544 * is going away we don't want to overfill the socket buffer for a
3547 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3548 sctp_m_freem(m_notify);
3551 /* append to socket */
3552 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3553 0, 0, stcb->asoc.context, 0, 0, 0,
3555 if (control == NULL) {
3557 sctp_m_freem(m_notify);
3560 control->length = SCTP_BUF_LEN(m_notify);
3561 control->spec_flags = M_NOTIFICATION;
3562 /* not that we need this */
3563 control->tail_mbuf = m_notify;
3564 sctp_add_to_readq(stcb->sctp_ep, stcb,
3566 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3572 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3574 struct mbuf *m_notify;
3575 struct sctp_adaptation_event *sai;
3576 struct sctp_queued_to_read *control;
3578 if ((stcb == NULL) ||
3579 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3580 /* event not enabled */
3584 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3585 if (m_notify == NULL)
3588 SCTP_BUF_LEN(m_notify) = 0;
3589 sai = mtod(m_notify, struct sctp_adaptation_event *);
3590 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3591 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3593 sai->sai_length = sizeof(struct sctp_adaptation_event);
3594 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3595 sai->sai_assoc_id = sctp_get_associd(stcb);
3597 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3598 SCTP_BUF_NEXT(m_notify) = NULL;
3600 /* append to socket */
3601 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3602 0, 0, stcb->asoc.context, 0, 0, 0,
3604 if (control == NULL) {
3606 sctp_m_freem(m_notify);
3609 control->length = SCTP_BUF_LEN(m_notify);
3610 control->spec_flags = M_NOTIFICATION;
3611 /* not that we need this */
3612 control->tail_mbuf = m_notify;
3613 sctp_add_to_readq(stcb->sctp_ep, stcb,
3615 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3618 /* This always must be called with the read-queue LOCKED in the INP */
3620 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3621 uint32_t val, int so_locked)
3623 struct mbuf *m_notify;
3624 struct sctp_pdapi_event *pdapi;
3625 struct sctp_queued_to_read *control;
3628 if ((stcb == NULL) ||
3629 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3630 /* event not enabled */
3633 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3637 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3638 if (m_notify == NULL)
3641 SCTP_BUF_LEN(m_notify) = 0;
3642 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3643 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3644 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3645 pdapi->pdapi_flags = 0;
3646 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3647 pdapi->pdapi_indication = error;
3648 pdapi->pdapi_stream = (val >> 16);
3649 pdapi->pdapi_seq = (val & 0x0000ffff);
3650 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3652 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3653 SCTP_BUF_NEXT(m_notify) = NULL;
3654 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3655 0, 0, stcb->asoc.context, 0, 0, 0,
3657 if (control == NULL) {
3659 sctp_m_freem(m_notify);
3662 control->length = SCTP_BUF_LEN(m_notify);
3663 control->spec_flags = M_NOTIFICATION;
3664 /* not that we need this */
3665 control->tail_mbuf = m_notify;
3666 sb = &stcb->sctp_socket->so_rcv;
3667 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3668 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3670 sctp_sballoc(stcb, sb, m_notify);
3671 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3672 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3674 control->end_added = 1;
3675 if (stcb->asoc.control_pdapi)
3676 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3678 /* we really should not see this case */
3679 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3681 if (stcb->sctp_ep && stcb->sctp_socket) {
3682 /* This should always be the case */
3683 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3688 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3690 struct mbuf *m_notify;
3691 struct sctp_shutdown_event *sse;
3692 struct sctp_queued_to_read *control;
3695 * For TCP model AND UDP connected sockets we will send an error up
3696 * when an SHUTDOWN completes
3698 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3699 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3700 /* mark socket closed for read/write and wakeup! */
3701 socantsendmore(stcb->sctp_socket);
3703 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3704 /* event not enabled */
3708 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3709 if (m_notify == NULL)
3712 sse = mtod(m_notify, struct sctp_shutdown_event *);
3713 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3714 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3716 sse->sse_length = sizeof(struct sctp_shutdown_event);
3717 sse->sse_assoc_id = sctp_get_associd(stcb);
3719 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3720 SCTP_BUF_NEXT(m_notify) = NULL;
3722 /* append to socket */
3723 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3724 0, 0, stcb->asoc.context, 0, 0, 0,
3726 if (control == NULL) {
3728 sctp_m_freem(m_notify);
3731 control->length = SCTP_BUF_LEN(m_notify);
3732 control->spec_flags = M_NOTIFICATION;
3733 /* not that we need this */
3734 control->tail_mbuf = m_notify;
3735 sctp_add_to_readq(stcb->sctp_ep, stcb,
3737 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3741 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3744 struct mbuf *m_notify;
3745 struct sctp_sender_dry_event *event;
3746 struct sctp_queued_to_read *control;
3748 if ((stcb == NULL) ||
3749 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3750 /* event not enabled */
3754 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3755 if (m_notify == NULL) {
3759 SCTP_BUF_LEN(m_notify) = 0;
3760 event = mtod(m_notify, struct sctp_sender_dry_event *);
3761 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3762 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3763 event->sender_dry_flags = 0;
3764 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3765 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3767 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3768 SCTP_BUF_NEXT(m_notify) = NULL;
3770 /* append to socket */
3771 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3772 0, 0, stcb->asoc.context, 0, 0, 0,
3774 if (control == NULL) {
3776 sctp_m_freem(m_notify);
3779 control->length = SCTP_BUF_LEN(m_notify);
3780 control->spec_flags = M_NOTIFICATION;
3781 /* not that we need this */
3782 control->tail_mbuf = m_notify;
3783 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3784 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3789 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3791 struct mbuf *m_notify;
3792 struct sctp_queued_to_read *control;
3793 struct sctp_stream_change_event *stradd;
3795 if ((stcb == NULL) ||
3796 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3797 /* event not enabled */
3800 if ((stcb->asoc.peer_req_out) && flag) {
3801 /* Peer made the request, don't tell the local user */
3802 stcb->asoc.peer_req_out = 0;
3805 stcb->asoc.peer_req_out = 0;
3806 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3807 if (m_notify == NULL)
3810 SCTP_BUF_LEN(m_notify) = 0;
3811 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3812 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3813 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3814 stradd->strchange_flags = flag;
3815 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3816 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3817 stradd->strchange_instrms = numberin;
3818 stradd->strchange_outstrms = numberout;
3819 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3820 SCTP_BUF_NEXT(m_notify) = NULL;
3821 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3823 sctp_m_freem(m_notify);
3826 /* append to socket */
3827 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3828 0, 0, stcb->asoc.context, 0, 0, 0,
3830 if (control == NULL) {
3832 sctp_m_freem(m_notify);
3835 control->length = SCTP_BUF_LEN(m_notify);
3836 control->spec_flags = M_NOTIFICATION;
3837 /* not that we need this */
3838 control->tail_mbuf = m_notify;
3839 sctp_add_to_readq(stcb->sctp_ep, stcb,
3841 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3845 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3847 struct mbuf *m_notify;
3848 struct sctp_queued_to_read *control;
3849 struct sctp_assoc_reset_event *strasoc;
3851 if ((stcb == NULL) ||
3852 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3853 /* event not enabled */
3856 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3857 if (m_notify == NULL)
3860 SCTP_BUF_LEN(m_notify) = 0;
3861 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3862 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3863 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3864 strasoc->assocreset_flags = flag;
3865 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3866 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3867 strasoc->assocreset_local_tsn = sending_tsn;
3868 strasoc->assocreset_remote_tsn = recv_tsn;
3869 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3870 SCTP_BUF_NEXT(m_notify) = NULL;
3871 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3873 sctp_m_freem(m_notify);
3876 /* append to socket */
3877 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3878 0, 0, stcb->asoc.context, 0, 0, 0,
3880 if (control == NULL) {
3882 sctp_m_freem(m_notify);
3885 control->length = SCTP_BUF_LEN(m_notify);
3886 control->spec_flags = M_NOTIFICATION;
3887 /* not that we need this */
3888 control->tail_mbuf = m_notify;
3889 sctp_add_to_readq(stcb->sctp_ep, stcb,
3891 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3897 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3898 int number_entries, uint16_t *list, int flag)
3900 struct mbuf *m_notify;
3901 struct sctp_queued_to_read *control;
3902 struct sctp_stream_reset_event *strreset;
3905 if ((stcb == NULL) ||
3906 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3907 /* event not enabled */
3911 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3912 if (m_notify == NULL)
3915 SCTP_BUF_LEN(m_notify) = 0;
3916 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3917 if (len > M_TRAILINGSPACE(m_notify)) {
3918 /* never enough room */
3919 sctp_m_freem(m_notify);
3922 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3923 memset(strreset, 0, len);
3924 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3925 strreset->strreset_flags = flag;
3926 strreset->strreset_length = len;
3927 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3928 if (number_entries) {
3931 for (i = 0; i < number_entries; i++) {
3932 strreset->strreset_stream_list[i] = ntohs(list[i]);
3935 SCTP_BUF_LEN(m_notify) = len;
3936 SCTP_BUF_NEXT(m_notify) = NULL;
3937 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3939 sctp_m_freem(m_notify);
3942 /* append to socket */
3943 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3944 0, 0, stcb->asoc.context, 0, 0, 0,
3946 if (control == NULL) {
3948 sctp_m_freem(m_notify);
3951 control->length = SCTP_BUF_LEN(m_notify);
3952 control->spec_flags = M_NOTIFICATION;
3953 /* not that we need this */
3954 control->tail_mbuf = m_notify;
3955 sctp_add_to_readq(stcb->sctp_ep, stcb,
3957 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3962 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3964 struct mbuf *m_notify;
3965 struct sctp_remote_error *sre;
3966 struct sctp_queued_to_read *control;
3967 unsigned int notif_len;
3970 if ((stcb == NULL) ||
3971 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3974 if (chunk != NULL) {
3975 chunk_len = ntohs(chunk->ch.chunk_length);
3977 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
3980 if (chunk_len > SCTP_CHUNK_BUFFER_SIZE) {
3981 chunk_len = SCTP_CHUNK_BUFFER_SIZE;
3986 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
3987 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3988 if (m_notify == NULL) {
3989 /* Retry with smaller value. */
3990 notif_len = (unsigned int)sizeof(struct sctp_remote_error);
3991 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3992 if (m_notify == NULL) {
3996 SCTP_BUF_NEXT(m_notify) = NULL;
3997 sre = mtod(m_notify, struct sctp_remote_error *);
3998 memset(sre, 0, notif_len);
3999 sre->sre_type = SCTP_REMOTE_ERROR;
4001 sre->sre_length = sizeof(struct sctp_remote_error);
4002 sre->sre_error = error;
4003 sre->sre_assoc_id = sctp_get_associd(stcb);
4004 if (notif_len > sizeof(struct sctp_remote_error)) {
4005 memcpy(sre->sre_data, chunk, chunk_len);
4006 sre->sre_length += chunk_len;
4008 SCTP_BUF_LEN(m_notify) = sre->sre_length;
4009 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
4010 0, 0, stcb->asoc.context, 0, 0, 0,
4012 if (control != NULL) {
4013 control->length = SCTP_BUF_LEN(m_notify);
4014 control->spec_flags = M_NOTIFICATION;
4015 /* not that we need this */
4016 control->tail_mbuf = m_notify;
4017 sctp_add_to_readq(stcb->sctp_ep, stcb,
4019 &stcb->sctp_socket->so_rcv, 1,
4020 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
4022 sctp_m_freem(m_notify);
4028 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
4029 uint32_t error, void *data, int so_locked)
4031 if ((stcb == NULL) ||
4032 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4033 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4034 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
4035 /* If the socket is gone we are out of here */
4038 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
4041 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4042 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4043 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
4044 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
4045 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
4046 /* Don't report these in front states */
4050 switch (notification) {
4051 case SCTP_NOTIFY_ASSOC_UP:
4052 if (stcb->asoc.assoc_up_sent == 0) {
4053 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
4054 stcb->asoc.assoc_up_sent = 1;
4056 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
4057 sctp_notify_adaptation_layer(stcb);
4059 if (stcb->asoc.auth_supported == 0) {
4060 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
4064 case SCTP_NOTIFY_ASSOC_DOWN:
4065 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
4067 case SCTP_NOTIFY_INTERFACE_DOWN:
4069 struct sctp_nets *net;
4071 net = (struct sctp_nets *)data;
4072 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
4073 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4076 case SCTP_NOTIFY_INTERFACE_UP:
4078 struct sctp_nets *net;
4080 net = (struct sctp_nets *)data;
4081 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
4082 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4085 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
4087 struct sctp_nets *net;
4089 net = (struct sctp_nets *)data;
4090 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
4091 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4094 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
4095 sctp_notify_send_failed2(stcb, error,
4096 (struct sctp_stream_queue_pending *)data, so_locked);
4098 case SCTP_NOTIFY_SENT_DG_FAIL:
4099 sctp_notify_send_failed(stcb, 1, error,
4100 (struct sctp_tmit_chunk *)data, so_locked);
4102 case SCTP_NOTIFY_UNSENT_DG_FAIL:
4103 sctp_notify_send_failed(stcb, 0, error,
4104 (struct sctp_tmit_chunk *)data, so_locked);
4106 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
4110 val = *((uint32_t *)data);
4112 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
4115 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
4116 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4117 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4118 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
4120 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
4123 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
4124 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4125 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4126 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
4128 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
4131 case SCTP_NOTIFY_ASSOC_RESTART:
4132 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
4133 if (stcb->asoc.auth_supported == 0) {
4134 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
4138 case SCTP_NOTIFY_STR_RESET_SEND:
4139 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_OUTGOING_SSN);
4141 case SCTP_NOTIFY_STR_RESET_RECV:
4142 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_INCOMING);
4144 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
4145 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4146 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
4148 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
4149 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4150 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
4152 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
4153 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4154 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
4156 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
4157 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4158 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
4160 case SCTP_NOTIFY_ASCONF_ADD_IP:
4161 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
4164 case SCTP_NOTIFY_ASCONF_DELETE_IP:
4165 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
4168 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
4169 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
4172 case SCTP_NOTIFY_PEER_SHUTDOWN:
4173 sctp_notify_shutdown_event(stcb);
4175 case SCTP_NOTIFY_AUTH_NEW_KEY:
4176 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
4177 (uint16_t)(uintptr_t)data,
4180 case SCTP_NOTIFY_AUTH_FREE_KEY:
4181 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
4182 (uint16_t)(uintptr_t)data,
4185 case SCTP_NOTIFY_NO_PEER_AUTH:
4186 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
4187 (uint16_t)(uintptr_t)data,
4190 case SCTP_NOTIFY_SENDER_DRY:
4191 sctp_notify_sender_dry_event(stcb, so_locked);
4193 case SCTP_NOTIFY_REMOTE_ERROR:
4194 sctp_notify_remote_error(stcb, error, data);
4197 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
4198 __func__, notification, notification);
4204 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked)
4206 struct sctp_association *asoc;
4207 struct sctp_stream_out *outs;
4208 struct sctp_tmit_chunk *chk, *nchk;
4209 struct sctp_stream_queue_pending *sp, *nsp;
4216 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
4217 /* already being freed */
4220 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4221 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4222 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
4225 /* now through all the gunk freeing chunks */
4226 if (holds_lock == 0) {
4227 SCTP_TCB_SEND_LOCK(stcb);
4229 /* sent queue SHOULD be empty */
4230 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
4231 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4232 asoc->sent_queue_cnt--;
4233 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
4234 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
4235 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
4238 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
4242 if (chk->data != NULL) {
4243 sctp_free_bufspace(stcb, asoc, chk, 1);
4244 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
4245 error, chk, so_locked);
4247 sctp_m_freem(chk->data);
4251 sctp_free_a_chunk(stcb, chk, so_locked);
4252 /* sa_ignore FREED_MEMORY */
4254 /* pending send queue SHOULD be empty */
4255 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
4256 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4257 asoc->send_queue_cnt--;
4258 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
4259 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
4262 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
4265 if (chk->data != NULL) {
4266 sctp_free_bufspace(stcb, asoc, chk, 1);
4267 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
4268 error, chk, so_locked);
4270 sctp_m_freem(chk->data);
4274 sctp_free_a_chunk(stcb, chk, so_locked);
4275 /* sa_ignore FREED_MEMORY */
4277 for (i = 0; i < asoc->streamoutcnt; i++) {
4278 /* For each stream */
4279 outs = &asoc->strmout[i];
4280 /* clean up any sends there */
4281 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4282 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
4283 TAILQ_REMOVE(&outs->outqueue, sp, next);
4284 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 1);
4285 sctp_free_spbufspace(stcb, asoc, sp);
4287 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4288 error, (void *)sp, so_locked);
4290 sctp_m_freem(sp->data);
4292 sp->tail_mbuf = NULL;
4297 sctp_free_remote_addr(sp->net);
4300 /* Free the chunk */
4301 sctp_free_a_strmoq(stcb, sp, so_locked);
4302 /* sa_ignore FREED_MEMORY */
4306 if (holds_lock == 0) {
4307 SCTP_TCB_SEND_UNLOCK(stcb);
4312 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
4313 struct sctp_abort_chunk *abort, int so_locked)
4318 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4319 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4320 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4321 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
4323 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4324 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4325 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
4328 /* Tell them we lost the asoc */
4329 sctp_report_all_outbound(stcb, error, 0, so_locked);
4331 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
4333 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
4338 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4339 struct mbuf *m, int iphlen,
4340 struct sockaddr *src, struct sockaddr *dst,
4341 struct sctphdr *sh, struct mbuf *op_err,
4342 uint8_t mflowtype, uint32_t mflowid,
4343 uint32_t vrf_id, uint16_t port)
4349 vtag = stcb->asoc.peer_vtag;
4350 vrf_id = stcb->asoc.vrf_id;
4352 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
4353 mflowtype, mflowid, inp->fibnum,
4356 /* We have a TCB to abort, send notification too */
4357 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
4358 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_WAS_ABORTED);
4359 /* Ok, now lets free it */
4360 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4361 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
4362 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4363 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4365 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4366 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
4369 #ifdef SCTP_ASOCLOG_OF_TSNS
4371 sctp_print_out_track_log(struct sctp_tcb *stcb)
4376 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
4377 SCTP_PRINTF("IN bound TSN log-aaa\n");
4378 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4379 SCTP_PRINTF("None rcvd\n");
4382 if (stcb->asoc.tsn_in_wrapped) {
4383 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4384 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4385 stcb->asoc.in_tsnlog[i].tsn,
4386 stcb->asoc.in_tsnlog[i].strm,
4387 stcb->asoc.in_tsnlog[i].seq,
4388 stcb->asoc.in_tsnlog[i].flgs,
4389 stcb->asoc.in_tsnlog[i].sz);
4392 if (stcb->asoc.tsn_in_at) {
4393 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4394 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4395 stcb->asoc.in_tsnlog[i].tsn,
4396 stcb->asoc.in_tsnlog[i].strm,
4397 stcb->asoc.in_tsnlog[i].seq,
4398 stcb->asoc.in_tsnlog[i].flgs,
4399 stcb->asoc.in_tsnlog[i].sz);
4403 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4404 if ((stcb->asoc.tsn_out_at == 0) &&
4405 (stcb->asoc.tsn_out_wrapped == 0)) {
4406 SCTP_PRINTF("None sent\n");
4408 if (stcb->asoc.tsn_out_wrapped) {
4409 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4410 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4411 stcb->asoc.out_tsnlog[i].tsn,
4412 stcb->asoc.out_tsnlog[i].strm,
4413 stcb->asoc.out_tsnlog[i].seq,
4414 stcb->asoc.out_tsnlog[i].flgs,
4415 stcb->asoc.out_tsnlog[i].sz);
4418 if (stcb->asoc.tsn_out_at) {
4419 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4420 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4421 stcb->asoc.out_tsnlog[i].tsn,
4422 stcb->asoc.out_tsnlog[i].strm,
4423 stcb->asoc.out_tsnlog[i].seq,
4424 stcb->asoc.out_tsnlog[i].flgs,
4425 stcb->asoc.out_tsnlog[i].sz);
4433 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4434 struct mbuf *op_err,
4439 /* Got to have a TCB */
4440 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4441 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4442 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4443 SCTP_CALLED_DIRECTLY_NOCMPSET);
4448 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_WAS_ABORTED);
4450 /* notify the peer */
4451 sctp_send_abort_tcb(stcb, op_err, so_locked);
4452 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4453 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
4454 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4455 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4457 /* notify the ulp */
4458 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4459 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4461 /* now free the asoc */
4462 #ifdef SCTP_ASOCLOG_OF_TSNS
4463 sctp_print_out_track_log(stcb);
4465 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4466 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4470 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4471 struct sockaddr *src, struct sockaddr *dst,
4472 struct sctphdr *sh, struct sctp_inpcb *inp,
4474 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4475 uint32_t vrf_id, uint16_t port)
4477 struct sctp_chunkhdr *ch, chunk_buf;
4478 unsigned int chk_length;
4479 int contains_init_chunk;
4481 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4482 /* Generate a TO address for future reference */
4483 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4484 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4485 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4486 SCTP_CALLED_DIRECTLY_NOCMPSET);
4489 contains_init_chunk = 0;
4490 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4491 sizeof(*ch), (uint8_t *)&chunk_buf);
4492 while (ch != NULL) {
4493 chk_length = ntohs(ch->chunk_length);
4494 if (chk_length < sizeof(*ch)) {
4495 /* break to abort land */
4498 switch (ch->chunk_type) {
4500 contains_init_chunk = 1;
4502 case SCTP_PACKET_DROPPED:
4503 /* we don't respond to pkt-dropped */
4505 case SCTP_ABORT_ASSOCIATION:
4506 /* we don't respond with an ABORT to an ABORT */
4508 case SCTP_SHUTDOWN_COMPLETE:
4510 * we ignore it since we are not waiting for it and
4514 case SCTP_SHUTDOWN_ACK:
4515 sctp_send_shutdown_complete2(src, dst, sh,
4516 mflowtype, mflowid, fibnum,
4522 offset += SCTP_SIZE32(chk_length);
4523 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4524 sizeof(*ch), (uint8_t *)&chunk_buf);
4526 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4527 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4528 (contains_init_chunk == 0))) {
4529 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4530 mflowtype, mflowid, fibnum,
4536 * check the inbound datagram to make sure there is not an abort inside it,
4537 * if there is return 1, else return 0.
4540 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtagfill)
4542 struct sctp_chunkhdr *ch;
4543 struct sctp_init_chunk *init_chk, chunk_buf;
4545 unsigned int chk_length;
4547 offset = iphlen + sizeof(struct sctphdr);
4548 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4549 (uint8_t *)&chunk_buf);
4550 while (ch != NULL) {
4551 chk_length = ntohs(ch->chunk_length);
4552 if (chk_length < sizeof(*ch)) {
4553 /* packet is probably corrupt */
4556 /* we seem to be ok, is it an abort? */
4557 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4558 /* yep, tell them */
4561 if (ch->chunk_type == SCTP_INITIATION) {
4562 /* need to update the Vtag */
4563 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4564 offset, sizeof(*init_chk), (uint8_t *)&chunk_buf);
4565 if (init_chk != NULL) {
4566 *vtagfill = ntohl(init_chk->init.initiate_tag);
4569 /* Nope, move to the next chunk */
4570 offset += SCTP_SIZE32(chk_length);
4571 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4572 sizeof(*ch), (uint8_t *)&chunk_buf);
4578 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4579 * set (i.e. it's 0) so, create this function to compare link local scopes
4583 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4585 struct sockaddr_in6 a, b;
4591 if (a.sin6_scope_id == 0)
4592 if (sa6_recoverscope(&a)) {
4593 /* can't get scope, so can't match */
4596 if (b.sin6_scope_id == 0)
4597 if (sa6_recoverscope(&b)) {
4598 /* can't get scope, so can't match */
4601 if (a.sin6_scope_id != b.sin6_scope_id)
4608 * returns a sockaddr_in6 with embedded scope recovered and removed
4610 struct sockaddr_in6 *
4611 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4613 /* check and strip embedded scope junk */
4614 if (addr->sin6_family == AF_INET6) {
4615 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4616 if (addr->sin6_scope_id == 0) {
4618 if (!sa6_recoverscope(store)) {
4619 /* use the recovered scope */
4623 /* else, return the original "to" addr */
4624 in6_clearscope(&addr->sin6_addr);
4633 * are the two addresses the same? currently a "scopeless" check returns: 1
4637 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4641 if (sa1 == NULL || sa2 == NULL)
4644 /* must be the same family */
4645 if (sa1->sa_family != sa2->sa_family)
4648 switch (sa1->sa_family) {
4652 /* IPv6 addresses */
4653 struct sockaddr_in6 *sin6_1, *sin6_2;
4655 sin6_1 = (struct sockaddr_in6 *)sa1;
4656 sin6_2 = (struct sockaddr_in6 *)sa2;
4657 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4664 /* IPv4 addresses */
4665 struct sockaddr_in *sin_1, *sin_2;
4667 sin_1 = (struct sockaddr_in *)sa1;
4668 sin_2 = (struct sockaddr_in *)sa2;
4669 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4673 /* we don't do these... */
4679 sctp_print_address(struct sockaddr *sa)
4682 char ip6buf[INET6_ADDRSTRLEN];
4685 switch (sa->sa_family) {
4689 struct sockaddr_in6 *sin6;
4691 sin6 = (struct sockaddr_in6 *)sa;
4692 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4693 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4694 ntohs(sin6->sin6_port),
4695 sin6->sin6_scope_id);
4702 struct sockaddr_in *sin;
4705 sin = (struct sockaddr_in *)sa;
4706 p = (unsigned char *)&sin->sin_addr;
4707 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4708 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4719 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4720 struct sctp_inpcb *new_inp,
4721 struct sctp_tcb *stcb,
4725 * go through our old INP and pull off any control structures that
4726 * belong to stcb and move then to the new inp.
4728 struct socket *old_so, *new_so;
4729 struct sctp_queued_to_read *control, *nctl;
4730 struct sctp_readhead tmp_queue;
4734 old_so = old_inp->sctp_socket;
4735 new_so = new_inp->sctp_socket;
4736 TAILQ_INIT(&tmp_queue);
4737 error = sblock(&old_so->so_rcv, waitflags);
4740 * Gak, can't get sblock, we have a problem. data will be
4741 * left stranded.. and we don't dare look at it since the
4742 * other thread may be reading something. Oh well, its a
4743 * screwed up app that does a peeloff OR a accept while
4744 * reading from the main socket... actually its only the
4745 * peeloff() case, since I think read will fail on a
4746 * listening socket..
4750 /* lock the socket buffers */
4751 SCTP_INP_READ_LOCK(old_inp);
4752 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4753 /* Pull off all for out target stcb */
4754 if (control->stcb == stcb) {
4755 /* remove it we want it */
4756 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4757 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4760 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4761 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4763 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4764 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4765 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4767 m = SCTP_BUF_NEXT(m);
4771 SCTP_INP_READ_UNLOCK(old_inp);
4772 /* Remove the sb-lock on the old socket */
4774 sbunlock(&old_so->so_rcv);
4775 /* Now we move them over to the new socket buffer */
4776 SCTP_INP_READ_LOCK(new_inp);
4777 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4778 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4781 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4782 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4784 sctp_sballoc(stcb, &new_so->so_rcv, m);
4785 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4786 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4788 m = SCTP_BUF_NEXT(m);
4791 SCTP_INP_READ_UNLOCK(new_inp);
4795 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
4796 struct sctp_tcb *stcb,
4801 if ((inp != NULL) && (inp->sctp_socket != NULL)) {
4802 sctp_sorwakeup(inp, inp->sctp_socket);
4807 sctp_add_to_readq(struct sctp_inpcb *inp,
4808 struct sctp_tcb *stcb,
4809 struct sctp_queued_to_read *control,
4812 int inp_read_lock_held,
4816 * Here we must place the control on the end of the socket read
4817 * queue AND increment sb_cc so that select will work properly on
4820 struct mbuf *m, *prev = NULL;
4825 panic("Gak, inp NULL on add_to_readq");
4829 if (inp_read_lock_held == 0)
4830 SCTP_INP_READ_LOCK(inp);
4831 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4832 if (!control->on_strm_q) {
4833 sctp_free_remote_addr(control->whoFrom);
4834 if (control->data) {
4835 sctp_m_freem(control->data);
4836 control->data = NULL;
4838 sctp_free_a_readq(stcb, control);
4840 if (inp_read_lock_held == 0)
4841 SCTP_INP_READ_UNLOCK(inp);
4844 if (!(control->spec_flags & M_NOTIFICATION)) {
4845 atomic_add_int(&inp->total_recvs, 1);
4846 if (!control->do_not_ref_stcb) {
4847 atomic_add_int(&stcb->total_recvs, 1);
4851 control->held_length = 0;
4852 control->length = 0;
4854 if (SCTP_BUF_LEN(m) == 0) {
4855 /* Skip mbufs with NO length */
4858 control->data = sctp_m_free(m);
4861 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4862 m = SCTP_BUF_NEXT(prev);
4865 control->tail_mbuf = prev;
4870 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4871 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4873 sctp_sballoc(stcb, sb, m);
4874 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4875 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4877 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4878 m = SCTP_BUF_NEXT(m);
4881 control->tail_mbuf = prev;
4883 /* Everything got collapsed out?? */
4884 if (!control->on_strm_q) {
4885 sctp_free_remote_addr(control->whoFrom);
4886 sctp_free_a_readq(stcb, control);
4888 if (inp_read_lock_held == 0)
4889 SCTP_INP_READ_UNLOCK(inp);
4893 control->end_added = 1;
4895 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4896 control->on_read_q = 1;
4897 if (inp_read_lock_held == 0)
4898 SCTP_INP_READ_UNLOCK(inp);
4899 if (inp && inp->sctp_socket) {
4900 sctp_wakeup_the_read_socket(inp, stcb, so_locked);
4904 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4905 *************ALTERNATE ROUTING CODE
4908 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4909 *************ALTERNATE ROUTING CODE
4913 sctp_generate_cause(uint16_t code, char *info)
4916 struct sctp_gen_error_cause *cause;
4920 if ((code == 0) || (info == NULL)) {
4923 info_len = strlen(info);
4924 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
4927 len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len);
4928 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4930 SCTP_BUF_LEN(m) = len;
4931 cause = mtod(m, struct sctp_gen_error_cause *);
4932 cause->code = htons(code);
4933 cause->length = htons(len);
4934 memcpy(cause->info, info, info_len);
4940 sctp_generate_no_user_data_cause(uint32_t tsn)
4943 struct sctp_error_no_user_data *no_user_data_cause;
4946 len = (uint16_t)sizeof(struct sctp_error_no_user_data);
4947 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4949 SCTP_BUF_LEN(m) = len;
4950 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4951 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4952 no_user_data_cause->cause.length = htons(len);
4953 no_user_data_cause->tsn = htonl(tsn);
4958 #ifdef SCTP_MBCNT_LOGGING
4960 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4961 struct sctp_tmit_chunk *tp1, int chk_cnt)
4963 if (tp1->data == NULL) {
4966 asoc->chunks_on_out_queue -= chk_cnt;
4967 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4968 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4969 asoc->total_output_queue_size,
4974 if (asoc->total_output_queue_size >= tp1->book_size) {
4975 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4977 asoc->total_output_queue_size = 0;
4980 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4981 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4982 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4983 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4985 stcb->sctp_socket->so_snd.sb_cc = 0;
4994 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4995 uint8_t sent, int so_locked)
4997 struct sctp_stream_out *strq;
4998 struct sctp_tmit_chunk *chk = NULL, *tp2;
4999 struct sctp_stream_queue_pending *sp;
5002 uint8_t foundeom = 0;
5005 int do_wakeup_routine = 0;
5007 sid = tp1->rec.data.sid;
5008 mid = tp1->rec.data.mid;
5009 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
5010 stcb->asoc.abandoned_sent[0]++;
5011 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
5012 stcb->asoc.strmout[sid].abandoned_sent[0]++;
5013 #if defined(SCTP_DETAILED_STR_STATS)
5014 stcb->asoc.strmout[sid].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
5017 stcb->asoc.abandoned_unsent[0]++;
5018 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
5019 stcb->asoc.strmout[sid].abandoned_unsent[0]++;
5020 #if defined(SCTP_DETAILED_STR_STATS)
5021 stcb->asoc.strmout[sid].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
5025 ret_sz += tp1->book_size;
5026 if (tp1->data != NULL) {
5027 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
5028 sctp_flight_size_decrease(tp1);
5029 sctp_total_flight_decrease(stcb, tp1);
5031 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
5032 stcb->asoc.peers_rwnd += tp1->send_size;
5033 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
5035 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
5037 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
5040 sctp_m_freem(tp1->data);
5043 do_wakeup_routine = 1;
5044 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
5045 stcb->asoc.sent_queue_cnt_removeable--;
5048 tp1->sent = SCTP_FORWARD_TSN_SKIP;
5049 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
5050 SCTP_DATA_NOT_FRAG) {
5051 /* not frag'ed we ae done */
5054 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
5055 /* end of frag, we are done */
5060 * Its a begin or middle piece, we must mark all of
5064 tp1 = TAILQ_NEXT(tp1, sctp_next);
5066 } while (tp1 && notdone);
5067 if (foundeom == 0) {
5069 * The multi-part message was scattered across the send and
5072 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
5073 if ((tp1->rec.data.sid != sid) ||
5074 (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) {
5078 * save to chk in case we have some on stream out
5079 * queue. If so and we have an un-transmitted one we
5080 * don't have to fudge the TSN.
5083 ret_sz += tp1->book_size;
5084 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
5086 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
5088 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
5091 sctp_m_freem(tp1->data);
5094 /* No flight involved here book the size to 0 */
5096 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
5099 do_wakeup_routine = 1;
5100 tp1->sent = SCTP_FORWARD_TSN_SKIP;
5101 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
5103 * on to the sent queue so we can wait for it to be
5106 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
5108 stcb->asoc.send_queue_cnt--;
5109 stcb->asoc.sent_queue_cnt++;
5112 if (foundeom == 0) {
5114 * Still no eom found. That means there is stuff left on the
5115 * stream out queue.. yuck.
5117 SCTP_TCB_SEND_LOCK(stcb);
5118 strq = &stcb->asoc.strmout[sid];
5119 sp = TAILQ_FIRST(&strq->outqueue);
5121 sp->discard_rest = 1;
5123 * We may need to put a chunk on the queue that
5124 * holds the TSN that would have been sent with the
5128 /* Yep, we have to */
5129 sctp_alloc_a_chunk(stcb, chk);
5132 * we are hosed. All we can do is
5133 * nothing.. which will cause an
5134 * abort if the peer is paying
5139 memset(chk, 0, sizeof(*chk));
5140 chk->rec.data.rcv_flags = 0;
5141 chk->sent = SCTP_FORWARD_TSN_SKIP;
5142 chk->asoc = &stcb->asoc;
5143 if (stcb->asoc.idata_supported == 0) {
5144 if (sp->sinfo_flags & SCTP_UNORDERED) {
5145 chk->rec.data.mid = 0;
5147 chk->rec.data.mid = strq->next_mid_ordered;
5150 if (sp->sinfo_flags & SCTP_UNORDERED) {
5151 chk->rec.data.mid = strq->next_mid_unordered;
5153 chk->rec.data.mid = strq->next_mid_ordered;
5156 chk->rec.data.sid = sp->sid;
5157 chk->rec.data.ppid = sp->ppid;
5158 chk->rec.data.context = sp->context;
5159 chk->flags = sp->act_flags;
5161 chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
5162 strq->chunks_on_queues++;
5163 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
5164 stcb->asoc.sent_queue_cnt++;
5165 stcb->asoc.pr_sctp_cnt++;
5167 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
5168 if (sp->sinfo_flags & SCTP_UNORDERED) {
5169 chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED;
5171 if (stcb->asoc.idata_supported == 0) {
5172 if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) {
5173 strq->next_mid_ordered++;
5176 if (sp->sinfo_flags & SCTP_UNORDERED) {
5177 strq->next_mid_unordered++;
5179 strq->next_mid_ordered++;
5185 * Pull any data to free up the SB and allow
5186 * sender to "add more" while we will throw
5189 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
5190 ret_sz += sp->length;
5191 do_wakeup_routine = 1;
5193 sctp_m_freem(sp->data);
5195 sp->tail_mbuf = NULL;
5199 SCTP_TCB_SEND_UNLOCK(stcb);
5201 if (do_wakeup_routine) {
5202 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
5208 * checks to see if the given address, sa, is one that is currently known by
5209 * the kernel note: can't distinguish the same address on multiple interfaces
5210 * and doesn't handle multiple addresses with different zone/scope id's note:
5211 * ifa_ifwithaddr() compares the entire sockaddr struct
5214 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
5217 struct sctp_laddr *laddr;
5219 if (holds_lock == 0) {
5220 SCTP_INP_RLOCK(inp);
5223 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5224 if (laddr->ifa == NULL)
5226 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
5229 if (addr->sa_family == AF_INET) {
5230 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5231 laddr->ifa->address.sin.sin_addr.s_addr) {
5238 if (addr->sa_family == AF_INET6) {
5239 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5240 &laddr->ifa->address.sin6)) {
5247 if (holds_lock == 0) {
5248 SCTP_INP_RUNLOCK(inp);
5250 if (laddr != NULL) {
5251 return (laddr->ifa);
5258 sctp_get_ifa_hash_val(struct sockaddr *addr)
5260 switch (addr->sa_family) {
5264 struct sockaddr_in *sin;
5266 sin = (struct sockaddr_in *)addr;
5267 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
5273 struct sockaddr_in6 *sin6;
5274 uint32_t hash_of_addr;
5276 sin6 = (struct sockaddr_in6 *)addr;
5277 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5278 sin6->sin6_addr.s6_addr32[1] +
5279 sin6->sin6_addr.s6_addr32[2] +
5280 sin6->sin6_addr.s6_addr32[3]);
5281 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5282 return (hash_of_addr);
5292 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5294 struct sctp_ifa *sctp_ifap;
5295 struct sctp_vrf *vrf;
5296 struct sctp_ifalist *hash_head;
5297 uint32_t hash_of_addr;
5299 if (holds_lock == 0) {
5300 SCTP_IPI_ADDR_RLOCK();
5302 SCTP_IPI_ADDR_LOCK_ASSERT();
5305 vrf = sctp_find_vrf(vrf_id);
5307 if (holds_lock == 0)
5308 SCTP_IPI_ADDR_RUNLOCK();
5312 hash_of_addr = sctp_get_ifa_hash_val(addr);
5314 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5315 if (hash_head == NULL) {
5316 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5317 hash_of_addr, (uint32_t)vrf->vrf_addr_hashmark,
5318 (uint32_t)(hash_of_addr & vrf->vrf_addr_hashmark));
5319 sctp_print_address(addr);
5320 SCTP_PRINTF("No such bucket for address\n");
5321 if (holds_lock == 0)
5322 SCTP_IPI_ADDR_RUNLOCK();
5326 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5327 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5330 if (addr->sa_family == AF_INET) {
5331 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5332 sctp_ifap->address.sin.sin_addr.s_addr) {
5339 if (addr->sa_family == AF_INET6) {
5340 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5341 &sctp_ifap->address.sin6)) {
5348 if (holds_lock == 0)
5349 SCTP_IPI_ADDR_RUNLOCK();
5354 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t *freed_so_far, int hold_rlock,
5357 /* User pulled some data, do we need a rwnd update? */
5358 struct epoch_tracker et;
5361 struct socket *so = NULL;
5366 atomic_add_int(&stcb->asoc.refcnt, 1);
5368 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_ACK_SENT) ||
5369 (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED | SCTP_STATE_SHUTDOWN_RECEIVED))) {
5370 /* Pre-check If we are freeing no update */
5373 SCTP_INP_INCR_REF(stcb->sctp_ep);
5374 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5375 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5378 so = stcb->sctp_socket;
5382 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5383 /* Have you have freed enough to look */
5385 /* Yep, its worth a look and the lock overhead */
5387 /* Figure out what the rwnd would be */
5388 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5389 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5390 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5394 if (dif >= rwnd_req) {
5396 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5399 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5401 * One last check before we allow the guy possibly
5402 * to get in. There is a race, where the guy has not
5403 * reached the gate. In that case
5407 SCTP_TCB_LOCK(stcb);
5408 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5409 /* No reports here */
5410 SCTP_TCB_UNLOCK(stcb);
5413 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5414 NET_EPOCH_ENTER(et);
5415 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5417 sctp_chunk_output(stcb->sctp_ep, stcb,
5418 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5419 /* make sure no timer is running */
5421 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5422 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5423 SCTP_TCB_UNLOCK(stcb);
5425 /* Update how much we have pending */
5426 stcb->freed_by_sorcv_sincelast = dif;
5429 if (so && r_unlocked && hold_rlock) {
5430 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5433 SCTP_INP_DECR_REF(stcb->sctp_ep);
5435 atomic_add_int(&stcb->asoc.refcnt, -1);
5440 sctp_sorecvmsg(struct socket *so,
5443 struct sockaddr *from,
5446 struct sctp_sndrcvinfo *sinfo,
5450 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5451 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5452 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5453 * On the way out we may send out any combination of:
5454 * MSG_NOTIFICATION MSG_EOR
5457 struct sctp_inpcb *inp = NULL;
5461 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5462 struct mbuf *m = NULL;
5463 struct sctp_tcb *stcb = NULL;
5464 int wakeup_read_socket = 0;
5465 int freecnt_applied = 0;
5466 int out_flags = 0, in_flags = 0;
5467 int block_allowed = 1;
5468 uint32_t freed_so_far = 0;
5469 ssize_t copied_so_far = 0;
5470 int in_eeor_mode = 0;
5471 int no_rcv_needed = 0;
5472 uint32_t rwnd_req = 0;
5473 int hold_sblock = 0;
5476 uint32_t held_length = 0;
5477 int sockbuf_lock = 0;
5480 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5485 in_flags = *msg_flags;
5486 if (in_flags & MSG_PEEK)
5487 SCTP_STAT_INCR(sctps_read_peeks);
5491 slen = uio->uio_resid;
5493 /* Pull in and set up our int flags */
5494 if (in_flags & MSG_OOB) {
5495 /* Out of band's NOT supported */
5496 return (EOPNOTSUPP);
5498 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5499 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5502 if ((in_flags & (MSG_DONTWAIT
5505 SCTP_SO_IS_NBIO(so)) {
5508 /* setup the endpoint */
5509 inp = (struct sctp_inpcb *)so->so_pcb;
5511 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5514 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5515 /* Must be at least a MTU's worth */
5516 if (rwnd_req < SCTP_MIN_RWND)
5517 rwnd_req = SCTP_MIN_RWND;
5518 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5519 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5520 sctp_misc_ints(SCTP_SORECV_ENTER,
5521 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5523 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5524 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5525 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5529 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5531 goto release_unlocked;
5537 if (hold_sblock == 0) {
5538 SOCKBUF_LOCK(&so->so_rcv);
5541 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5542 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5545 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5547 error = so->so_error;
5548 if ((in_flags & MSG_PEEK) == 0)
5552 if (so->so_rcv.sb_cc == 0) {
5559 if (so->so_rcv.sb_cc <= held_length) {
5561 error = so->so_error;
5562 if ((in_flags & MSG_PEEK) == 0) {
5567 if ((so->so_rcv.sb_cc == 0) &&
5568 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5569 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5570 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5572 * For active open side clear flags for
5573 * re-use passive open is blocked by
5576 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5578 * You were aborted, passive side
5581 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5584 so->so_state &= ~(SS_ISCONNECTING |
5585 SS_ISDISCONNECTING |
5589 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5590 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5597 if (block_allowed) {
5598 error = sbwait(&so->so_rcv);
5603 goto restart_nosblocks;
5605 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5606 error = EWOULDBLOCK;
5610 if (hold_sblock == 1) {
5611 SOCKBUF_UNLOCK(&so->so_rcv);
5614 /* we possibly have data we can read */
5615 /* sa_ignore FREED_MEMORY */
5616 control = TAILQ_FIRST(&inp->read_queue);
5617 if (control == NULL) {
5619 * This could be happening since the appender did the
5620 * increment but as not yet did the tailq insert onto the
5623 if (hold_rlock == 0) {
5624 SCTP_INP_READ_LOCK(inp);
5626 control = TAILQ_FIRST(&inp->read_queue);
5627 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5629 panic("Huh, its non zero and nothing on control?");
5631 so->so_rcv.sb_cc = 0;
5633 SCTP_INP_READ_UNLOCK(inp);
5638 if ((control->length == 0) &&
5639 (control->do_not_ref_stcb)) {
5641 * Clean up code for freeing assoc that left behind a
5642 * pdapi.. maybe a peer in EEOR that just closed after
5643 * sending and never indicated a EOR.
5645 if (hold_rlock == 0) {
5647 SCTP_INP_READ_LOCK(inp);
5649 control->held_length = 0;
5650 if (control->data) {
5651 /* Hmm there is data here .. fix */
5655 m_tmp = control->data;
5657 cnt += SCTP_BUF_LEN(m_tmp);
5658 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5659 control->tail_mbuf = m_tmp;
5660 control->end_added = 1;
5662 m_tmp = SCTP_BUF_NEXT(m_tmp);
5664 control->length = cnt;
5667 TAILQ_REMOVE(&inp->read_queue, control, next);
5668 /* Add back any hiddend data */
5669 sctp_free_remote_addr(control->whoFrom);
5670 sctp_free_a_readq(stcb, control);
5674 SCTP_INP_READ_UNLOCK(inp);
5678 if ((control->length == 0) &&
5679 (control->end_added == 1)) {
5681 * Do we also need to check for (control->pdapi_aborted ==
5684 if (hold_rlock == 0) {
5686 SCTP_INP_READ_LOCK(inp);
5688 TAILQ_REMOVE(&inp->read_queue, control, next);
5689 if (control->data) {
5691 panic("control->data not null but control->length == 0");
5693 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5694 sctp_m_freem(control->data);
5695 control->data = NULL;
5698 if (control->aux_data) {
5699 sctp_m_free(control->aux_data);
5700 control->aux_data = NULL;
5703 if (control->on_strm_q) {
5704 panic("About to free ctl:%p so:%p and its in %d",
5705 control, so, control->on_strm_q);
5708 sctp_free_remote_addr(control->whoFrom);
5709 sctp_free_a_readq(stcb, control);
5712 SCTP_INP_READ_UNLOCK(inp);
5716 if (control->length == 0) {
5717 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5719 /* find a more suitable one then this */
5720 ctl = TAILQ_NEXT(control, next);
5722 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5724 (ctl->spec_flags & M_NOTIFICATION) ||
5725 ((ctl->do_not_ref_stcb == 0) &&
5726 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5729 * If we have a different TCB next, and there is data
5730 * present. If we have already taken some (pdapi), OR we can
5731 * ref the tcb and no delivery as started on this stream, we
5732 * take it. Note we allow a notification on a different
5733 * assoc to be delivered..
5737 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5739 ((ctl->some_taken) ||
5740 ((ctl->do_not_ref_stcb == 0) &&
5741 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5742 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5744 * If we have the same tcb, and there is data present, and we
5745 * have the strm interleave feature present. Then if we have
5746 * taken some (pdapi) or we can refer to tht tcb AND we have
5747 * not started a delivery for this stream, we can take it.
5748 * Note we do NOT allow a notificaiton on the same assoc to
5754 ctl = TAILQ_NEXT(ctl, next);
5758 * if we reach here, not suitable replacement is available
5759 * <or> fragment interleave is NOT on. So stuff the sb_cc
5760 * into the our held count, and its time to sleep again.
5762 held_length = so->so_rcv.sb_cc;
5763 control->held_length = so->so_rcv.sb_cc;
5766 /* Clear the held length since there is something to read */
5767 control->held_length = 0;
5770 * If we reach here, control has a some data for us to read off.
5771 * Note that stcb COULD be NULL.
5773 if (hold_rlock == 0) {
5775 SCTP_INP_READ_LOCK(inp);
5777 control->some_taken++;
5778 stcb = control->stcb;
5780 if ((control->do_not_ref_stcb == 0) &&
5781 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5782 if (freecnt_applied == 0)
5784 } else if (control->do_not_ref_stcb == 0) {
5785 /* you can't free it on me please */
5787 * The lock on the socket buffer protects us so the
5788 * free code will stop. But since we used the
5789 * socketbuf lock and the sender uses the tcb_lock
5790 * to increment, we need to use the atomic add to
5793 if (freecnt_applied) {
5795 panic("refcnt already incremented");
5797 SCTP_PRINTF("refcnt already incremented?\n");
5800 atomic_add_int(&stcb->asoc.refcnt, 1);
5801 freecnt_applied = 1;
5804 * Setup to remember how much we have not yet told
5805 * the peer our rwnd has opened up. Note we grab the
5806 * value from the tcb from last time. Note too that
5807 * sack sending clears this when a sack is sent,
5808 * which is fine. Once we hit the rwnd_req, we then
5809 * will go to the sctp_user_rcvd() that will not
5810 * lock until it KNOWs it MUST send a WUP-SACK.
5812 freed_so_far = (uint32_t)stcb->freed_by_sorcv_sincelast;
5813 stcb->freed_by_sorcv_sincelast = 0;
5817 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5818 control->do_not_ref_stcb == 0) {
5819 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5822 /* First lets get off the sinfo and sockaddr info */
5823 if ((sinfo != NULL) && (filling_sinfo != 0)) {
5824 sinfo->sinfo_stream = control->sinfo_stream;
5825 sinfo->sinfo_ssn = (uint16_t)control->mid;
5826 sinfo->sinfo_flags = control->sinfo_flags;
5827 sinfo->sinfo_ppid = control->sinfo_ppid;
5828 sinfo->sinfo_context = control->sinfo_context;
5829 sinfo->sinfo_timetolive = control->sinfo_timetolive;
5830 sinfo->sinfo_tsn = control->sinfo_tsn;
5831 sinfo->sinfo_cumtsn = control->sinfo_cumtsn;
5832 sinfo->sinfo_assoc_id = control->sinfo_assoc_id;
5833 nxt = TAILQ_NEXT(control, next);
5834 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5835 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5836 struct sctp_extrcvinfo *s_extra;
5838 s_extra = (struct sctp_extrcvinfo *)sinfo;
5841 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5842 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5843 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5845 if (nxt->spec_flags & M_NOTIFICATION) {
5846 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5848 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5849 s_extra->serinfo_next_length = nxt->length;
5850 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5851 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5852 if (nxt->tail_mbuf != NULL) {
5853 if (nxt->end_added) {
5854 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5859 * we explicitly 0 this, since the memcpy
5860 * got some other things beyond the older
5861 * sinfo_ that is on the control's structure
5865 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5866 s_extra->serinfo_next_aid = 0;
5867 s_extra->serinfo_next_length = 0;
5868 s_extra->serinfo_next_ppid = 0;
5869 s_extra->serinfo_next_stream = 0;
5873 * update off the real current cum-ack, if we have an stcb.
5875 if ((control->do_not_ref_stcb == 0) && stcb)
5876 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5878 * mask off the high bits, we keep the actual chunk bits in
5881 sinfo->sinfo_flags &= 0x00ff;
5882 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5883 sinfo->sinfo_flags |= SCTP_UNORDERED;
5886 #ifdef SCTP_ASOCLOG_OF_TSNS
5888 int index, newindex;
5889 struct sctp_pcbtsn_rlog *entry;
5892 index = inp->readlog_index;
5893 newindex = index + 1;
5894 if (newindex >= SCTP_READ_LOG_SIZE) {
5897 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5898 entry = &inp->readlog[index];
5899 entry->vtag = control->sinfo_assoc_id;
5900 entry->strm = control->sinfo_stream;
5901 entry->seq = (uint16_t)control->mid;
5902 entry->sz = control->length;
5903 entry->flgs = control->sinfo_flags;
5906 if ((fromlen > 0) && (from != NULL)) {
5907 union sctp_sockstore store;
5910 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5913 len = sizeof(struct sockaddr_in6);
5914 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5915 store.sin6.sin6_port = control->port_from;
5921 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5922 len = sizeof(struct sockaddr_in6);
5923 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5925 store.sin6.sin6_port = control->port_from;
5927 len = sizeof(struct sockaddr_in);
5928 store.sin = control->whoFrom->ro._l_addr.sin;
5929 store.sin.sin_port = control->port_from;
5932 len = sizeof(struct sockaddr_in);
5933 store.sin = control->whoFrom->ro._l_addr.sin;
5934 store.sin.sin_port = control->port_from;
5942 memcpy(from, &store, min((size_t)fromlen, len));
5945 struct sockaddr_in6 lsa6, *from6;
5947 from6 = (struct sockaddr_in6 *)from;
5948 sctp_recover_scope_mac(from6, (&lsa6));
5953 SCTP_INP_READ_UNLOCK(inp);
5957 SOCKBUF_UNLOCK(&so->so_rcv);
5960 /* now copy out what data we can */
5962 /* copy out each mbuf in the chain up to length */
5966 /* Move out all we can */
5967 cp_len = uio->uio_resid;
5968 my_len = SCTP_BUF_LEN(m);
5969 if (cp_len > my_len) {
5970 /* not enough in this buf */
5974 SCTP_INP_READ_UNLOCK(inp);
5978 error = uiomove(mtod(m, char *), (int)cp_len, uio);
5980 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5984 if ((control->do_not_ref_stcb == 0) && stcb &&
5985 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5989 /* error we are out of here */
5992 SCTP_INP_READ_LOCK(inp);
5994 if (cp_len == SCTP_BUF_LEN(m)) {
5995 if ((SCTP_BUF_NEXT(m) == NULL) &&
5996 (control->end_added)) {
5997 out_flags |= MSG_EOR;
5998 if ((control->do_not_ref_stcb == 0) &&
5999 (control->stcb != NULL) &&
6000 ((control->spec_flags & M_NOTIFICATION) == 0))
6001 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6003 if (control->spec_flags & M_NOTIFICATION) {
6004 out_flags |= MSG_NOTIFICATION;
6006 /* we ate up the mbuf */
6007 if (in_flags & MSG_PEEK) {
6009 m = SCTP_BUF_NEXT(m);
6010 copied_so_far += cp_len;
6012 /* dispose of the mbuf */
6013 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6014 sctp_sblog(&so->so_rcv,
6015 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6017 sctp_sbfree(control, stcb, &so->so_rcv, m);
6018 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6019 sctp_sblog(&so->so_rcv,
6020 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6022 copied_so_far += cp_len;
6023 freed_so_far += (uint32_t)cp_len;
6024 freed_so_far += MSIZE;
6025 atomic_subtract_int(&control->length, cp_len);
6026 control->data = sctp_m_free(m);
6029 * been through it all, must hold sb
6030 * lock ok to null tail
6032 if (control->data == NULL) {
6034 if ((control->end_added == 0) ||
6035 (TAILQ_NEXT(control, next) == NULL)) {
6043 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
6044 panic("Hmm we don't own the lock?");
6048 control->tail_mbuf = NULL;
6050 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
6051 panic("end_added, nothing left and no MSG_EOR");
6057 /* Do we need to trim the mbuf? */
6058 if (control->spec_flags & M_NOTIFICATION) {
6059 out_flags |= MSG_NOTIFICATION;
6061 if ((in_flags & MSG_PEEK) == 0) {
6062 SCTP_BUF_RESV_UF(m, cp_len);
6063 SCTP_BUF_LEN(m) -= (int)cp_len;
6064 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6065 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, (int)cp_len);
6067 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
6068 if ((control->do_not_ref_stcb == 0) &&
6070 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
6072 copied_so_far += cp_len;
6073 freed_so_far += (uint32_t)cp_len;
6074 freed_so_far += MSIZE;
6075 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6076 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
6077 SCTP_LOG_SBRESULT, 0);
6079 atomic_subtract_int(&control->length, cp_len);
6081 copied_so_far += cp_len;
6084 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
6087 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
6088 (control->do_not_ref_stcb == 0) &&
6089 (freed_so_far >= rwnd_req)) {
6090 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6092 } /* end while(m) */
6094 * At this point we have looked at it all and we either have
6095 * a MSG_EOR/or read all the user wants... <OR>
6096 * control->length == 0.
6098 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
6099 /* we are done with this control */
6100 if (control->length == 0) {
6101 if (control->data) {
6103 panic("control->data not null at read eor?");
6105 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
6106 sctp_m_freem(control->data);
6107 control->data = NULL;
6111 if (hold_rlock == 0) {
6112 SCTP_INP_READ_LOCK(inp);
6115 TAILQ_REMOVE(&inp->read_queue, control, next);
6116 /* Add back any hiddend data */
6117 if (control->held_length) {
6119 control->held_length = 0;
6120 wakeup_read_socket = 1;
6122 if (control->aux_data) {
6123 sctp_m_free(control->aux_data);
6124 control->aux_data = NULL;
6126 no_rcv_needed = control->do_not_ref_stcb;
6127 sctp_free_remote_addr(control->whoFrom);
6128 control->data = NULL;
6130 if (control->on_strm_q) {
6131 panic("About to free ctl:%p so:%p and its in %d",
6132 control, so, control->on_strm_q);
6135 sctp_free_a_readq(stcb, control);
6137 if ((freed_so_far >= rwnd_req) &&
6138 (no_rcv_needed == 0))
6139 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6143 * The user did not read all of this
6144 * message, turn off the returned MSG_EOR
6145 * since we are leaving more behind on the
6149 if (control->end_added &&
6150 (control->data == NULL) &&
6151 (control->tail_mbuf == NULL)) {
6152 panic("Gak, control->length is corrupt?");
6155 no_rcv_needed = control->do_not_ref_stcb;
6156 out_flags &= ~MSG_EOR;
6159 if (out_flags & MSG_EOR) {
6162 if ((uio->uio_resid == 0) ||
6164 (copied_so_far >= max(so->so_rcv.sb_lowat, 1)))) {
6168 * If I hit here the receiver wants more and this message is
6169 * NOT done (pd-api). So two questions. Can we block? if not
6170 * we are done. Did the user NOT set MSG_WAITALL?
6172 if (block_allowed == 0) {
6176 * We need to wait for more data a few things: - We don't
6177 * sbunlock() so we don't get someone else reading. - We
6178 * must be sure to account for the case where what is added
6179 * is NOT to our control when we wakeup.
6183 * Do we need to tell the transport a rwnd update might be
6184 * needed before we go to sleep?
6186 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
6187 ((freed_so_far >= rwnd_req) &&
6188 (control->do_not_ref_stcb == 0) &&
6189 (no_rcv_needed == 0))) {
6190 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6193 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
6197 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
6200 if (hold_rlock == 1) {
6201 SCTP_INP_READ_UNLOCK(inp);
6204 if (hold_sblock == 0) {
6205 SOCKBUF_LOCK(&so->so_rcv);
6208 if ((copied_so_far) && (control->length == 0) &&
6209 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
6212 if (so->so_rcv.sb_cc <= control->held_length) {
6213 error = sbwait(&so->so_rcv);
6217 control->held_length = 0;
6220 SOCKBUF_UNLOCK(&so->so_rcv);
6223 if (control->length == 0) {
6224 /* still nothing here */
6225 if (control->end_added == 1) {
6226 /* he aborted, or is done i.e.did a shutdown */
6227 out_flags |= MSG_EOR;
6228 if (control->pdapi_aborted) {
6229 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6230 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6232 out_flags |= MSG_TRUNC;
6234 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6235 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6237 goto done_with_control;
6239 if (so->so_rcv.sb_cc > held_length) {
6240 control->held_length = so->so_rcv.sb_cc;
6243 goto wait_some_more;
6244 } else if (control->data == NULL) {
6246 * we must re-sync since data is probably being
6249 SCTP_INP_READ_LOCK(inp);
6250 if ((control->length > 0) && (control->data == NULL)) {
6252 * big trouble.. we have the lock and its
6256 panic("Impossible data==NULL length !=0");
6258 out_flags |= MSG_EOR;
6259 out_flags |= MSG_TRUNC;
6260 control->length = 0;
6261 SCTP_INP_READ_UNLOCK(inp);
6262 goto done_with_control;
6264 SCTP_INP_READ_UNLOCK(inp);
6265 /* We will fall around to get more data */
6270 * Give caller back the mbuf chain,
6271 * store in uio_resid the length
6273 wakeup_read_socket = 0;
6274 if ((control->end_added == 0) ||
6275 (TAILQ_NEXT(control, next) == NULL)) {
6276 /* Need to get rlock */
6277 if (hold_rlock == 0) {
6278 SCTP_INP_READ_LOCK(inp);
6282 if (control->end_added) {
6283 out_flags |= MSG_EOR;
6284 if ((control->do_not_ref_stcb == 0) &&
6285 (control->stcb != NULL) &&
6286 ((control->spec_flags & M_NOTIFICATION) == 0))
6287 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6289 if (control->spec_flags & M_NOTIFICATION) {
6290 out_flags |= MSG_NOTIFICATION;
6292 uio->uio_resid = control->length;
6293 *mp = control->data;
6296 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6297 sctp_sblog(&so->so_rcv,
6298 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6300 sctp_sbfree(control, stcb, &so->so_rcv, m);
6301 freed_so_far += (uint32_t)SCTP_BUF_LEN(m);
6302 freed_so_far += MSIZE;
6303 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6304 sctp_sblog(&so->so_rcv,
6305 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6307 m = SCTP_BUF_NEXT(m);
6309 control->data = control->tail_mbuf = NULL;
6310 control->length = 0;
6311 if (out_flags & MSG_EOR) {
6312 /* Done with this control */
6313 goto done_with_control;
6317 if (hold_rlock == 1) {
6318 SCTP_INP_READ_UNLOCK(inp);
6321 if (hold_sblock == 1) {
6322 SOCKBUF_UNLOCK(&so->so_rcv);
6326 sbunlock(&so->so_rcv);
6331 SOCKBUF_UNLOCK(&so->so_rcv);
6334 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6335 if ((freed_so_far >= rwnd_req) &&
6336 (control && (control->do_not_ref_stcb == 0)) &&
6337 (no_rcv_needed == 0))
6338 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6342 *msg_flags = out_flags;
6344 if (((out_flags & MSG_EOR) == 0) &&
6345 ((in_flags & MSG_PEEK) == 0) &&
6347 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6348 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6349 struct sctp_extrcvinfo *s_extra;
6351 s_extra = (struct sctp_extrcvinfo *)sinfo;
6352 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6354 if (hold_rlock == 1) {
6355 SCTP_INP_READ_UNLOCK(inp);
6358 SOCKBUF_UNLOCK(&so->so_rcv);
6361 sbunlock(&so->so_rcv);
6364 if (freecnt_applied) {
6366 * The lock on the socket buffer protects us so the free
6367 * code will stop. But since we used the socketbuf lock and
6368 * the sender uses the tcb_lock to increment, we need to use
6369 * the atomic add to the refcnt.
6373 panic("stcb for refcnt has gone NULL?");
6379 /* Save the value back for next time */
6380 stcb->freed_by_sorcv_sincelast = freed_so_far;
6381 atomic_add_int(&stcb->asoc.refcnt, -1);
6383 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6385 sctp_misc_ints(SCTP_SORECV_DONE,
6387 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6391 sctp_misc_ints(SCTP_SORECV_DONE,
6393 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6399 if (wakeup_read_socket) {
6400 sctp_sorwakeup(inp, so);
6406 #ifdef SCTP_MBUF_LOGGING
6408 sctp_m_free(struct mbuf *m)
6410 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6411 sctp_log_mb(m, SCTP_MBUF_IFREE);
6417 sctp_m_freem(struct mbuf *mb)
6420 mb = sctp_m_free(mb);
6426 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6429 * Given a local address. For all associations that holds the
6430 * address, request a peer-set-primary.
6432 struct sctp_ifa *ifa;
6433 struct sctp_laddr *wi;
6435 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
6437 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6438 return (EADDRNOTAVAIL);
6441 * Now that we have the ifa we must awaken the iterator with this
6444 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6446 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6449 /* Now incr the count and int wi structure */
6450 SCTP_INCR_LADDR_COUNT();
6451 memset(wi, 0, sizeof(*wi));
6452 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6454 wi->action = SCTP_SET_PRIM_ADDR;
6455 atomic_add_int(&ifa->refcount, 1);
6457 /* Now add it to the work queue */
6458 SCTP_WQ_ADDR_LOCK();
6460 * Should this really be a tailq? As it is we will process the
6463 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6464 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6465 (struct sctp_inpcb *)NULL,
6466 (struct sctp_tcb *)NULL,
6467 (struct sctp_nets *)NULL);
6468 SCTP_WQ_ADDR_UNLOCK();
6474 sctp_soreceive(struct socket *so,
6475 struct sockaddr **psa,
6478 struct mbuf **controlp,
6482 uint8_t sockbuf[256];
6483 struct sockaddr *from;
6484 struct sctp_extrcvinfo sinfo;
6485 int filling_sinfo = 1;
6487 struct sctp_inpcb *inp;
6489 inp = (struct sctp_inpcb *)so->so_pcb;
6490 /* pickup the assoc we are reading from */
6492 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6495 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6496 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6497 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6498 (controlp == NULL)) {
6499 /* user does not want the sndrcv ctl */
6503 from = (struct sockaddr *)sockbuf;
6504 fromlen = sizeof(sockbuf);
6511 if (filling_sinfo) {
6512 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6514 if (flagsp != NULL) {
6519 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, &flags,
6520 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6521 if (flagsp != NULL) {
6524 if (controlp != NULL) {
6525 /* copy back the sinfo in a CMSG format */
6526 if (filling_sinfo && ((flags & MSG_NOTIFICATION) == 0)) {
6527 *controlp = sctp_build_ctl_nchunk(inp,
6528 (struct sctp_sndrcvinfo *)&sinfo);
6534 /* copy back the address info */
6535 if (from && from->sa_len) {
6536 *psa = sodupsockaddr(from, M_NOWAIT);
6549 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6550 int totaddr, int *error)
6554 struct sctp_inpcb *inp;
6555 struct sockaddr *sa;
6558 struct sockaddr_in *sin;
6561 struct sockaddr_in6 *sin6;
6565 inp = stcb->sctp_ep;
6567 for (i = 0; i < totaddr; i++) {
6568 switch (sa->sa_family) {
6571 incr = sizeof(struct sockaddr_in);
6572 sin = (struct sockaddr_in *)sa;
6573 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6574 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6575 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6576 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6577 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6578 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6582 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6583 SCTP_DONOT_SETSCOPE,
6584 SCTP_ADDR_IS_CONFIRMED)) {
6585 /* assoc gone no un-lock */
6586 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6587 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6588 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6597 incr = sizeof(struct sockaddr_in6);
6598 sin6 = (struct sockaddr_in6 *)sa;
6599 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6600 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6601 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6602 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6603 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6607 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6608 SCTP_DONOT_SETSCOPE,
6609 SCTP_ADDR_IS_CONFIRMED)) {
6610 /* assoc gone no un-lock */
6611 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6612 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6613 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6623 sa = (struct sockaddr *)((caddr_t)sa + incr);
6630 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6631 unsigned int totaddr,
6632 unsigned int *num_v4, unsigned int *num_v6,
6635 struct sockaddr *sa;
6636 struct sctp_tcb *stcb;
6637 unsigned int incr, at, i;
6641 *num_v6 = *num_v4 = 0;
6642 /* account and validate addresses */
6646 for (i = 0; i < totaddr; i++) {
6647 if (at + sizeof(struct sockaddr) > limit) {
6650 switch (sa->sa_family) {
6653 incr = (unsigned int)sizeof(struct sockaddr_in);
6654 if (sa->sa_len != incr) {
6663 struct sockaddr_in6 *sin6;
6665 sin6 = (struct sockaddr_in6 *)sa;
6666 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6667 /* Must be non-mapped for connectx */
6670 incr = (unsigned int)sizeof(struct sockaddr_in6);
6671 if (sa->sa_len != incr) {
6681 if ((at + incr) > limit) {
6684 SCTP_INP_INCR_REF(inp);
6685 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6687 SCTP_TCB_UNLOCK(stcb);
6690 SCTP_INP_DECR_REF(inp);
6693 sa = (struct sockaddr *)((caddr_t)sa + incr);
6699 * sctp_bindx(ADD) for one address.
6700 * assumes all arguments are valid/checked by caller.
6703 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6704 struct sockaddr *sa, uint32_t vrf_id, int *error,
6707 #if defined(INET) && defined(INET6)
6708 struct sockaddr_in sin;
6711 struct sockaddr_in6 *sin6;
6714 struct sockaddr_in *sinp;
6716 struct sockaddr *addr_to_use;
6717 struct sctp_inpcb *lep;
6720 /* see if we're bound all already! */
6721 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6722 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6726 switch (sa->sa_family) {
6729 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6730 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6734 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6735 /* can only bind v6 on PF_INET6 sockets */
6736 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6740 sin6 = (struct sockaddr_in6 *)sa;
6741 port = sin6->sin6_port;
6743 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6744 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6745 SCTP_IPV6_V6ONLY(inp)) {
6746 /* can't bind v4-mapped on PF_INET sockets */
6747 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6751 in6_sin6_2_sin(&sin, sin6);
6752 addr_to_use = (struct sockaddr *)&sin;
6763 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6764 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6768 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6769 SCTP_IPV6_V6ONLY(inp)) {
6770 /* can't bind v4 on PF_INET sockets */
6771 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6775 sinp = (struct sockaddr_in *)sa;
6776 port = sinp->sin_port;
6781 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6785 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6787 /* Can't get proc for Net/Open BSD */
6788 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6792 *error = sctp_inpcb_bind(so, addr_to_use, NULL, p);
6795 /* Validate the incoming port. */
6796 if ((port != 0) && (port != inp->sctp_lport)) {
6797 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6801 lep = sctp_pcb_findep(addr_to_use, 1, 0, vrf_id);
6803 /* add the address */
6804 *error = sctp_addr_mgmt_ep_sa(inp, addr_to_use,
6805 SCTP_ADD_IP_ADDRESS, vrf_id);
6808 *error = EADDRINUSE;
6810 SCTP_INP_DECR_REF(lep);
6815 * sctp_bindx(DELETE) for one address.
6816 * assumes all arguments are valid/checked by caller.
6819 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6820 struct sockaddr *sa, uint32_t vrf_id, int *error)
6822 struct sockaddr *addr_to_use;
6823 #if defined(INET) && defined(INET6)
6824 struct sockaddr_in6 *sin6;
6825 struct sockaddr_in sin;
6828 /* see if we're bound all already! */
6829 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6830 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6834 switch (sa->sa_family) {
6837 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6838 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6842 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6843 /* can only bind v6 on PF_INET6 sockets */
6844 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6849 sin6 = (struct sockaddr_in6 *)sa;
6850 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6851 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6852 SCTP_IPV6_V6ONLY(inp)) {
6853 /* can't bind mapped-v4 on PF_INET sockets */
6854 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6858 in6_sin6_2_sin(&sin, sin6);
6859 addr_to_use = (struct sockaddr *)&sin;
6870 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6871 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6875 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6876 SCTP_IPV6_V6ONLY(inp)) {
6877 /* can't bind v4 on PF_INET sockets */
6878 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6886 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6890 /* No lock required mgmt_ep_sa does its own locking. */
6891 *error = sctp_addr_mgmt_ep_sa(inp, addr_to_use, SCTP_DEL_IP_ADDRESS,
6896 * returns the valid local address count for an assoc, taking into account
6900 sctp_local_addr_count(struct sctp_tcb *stcb)
6904 int ipv4_local_scope, ipv4_addr_legal;
6907 int local_scope, site_scope, ipv6_addr_legal;
6909 struct sctp_vrf *vrf;
6910 struct sctp_ifn *sctp_ifn;
6911 struct sctp_ifa *sctp_ifa;
6914 /* Turn on all the appropriate scopes */
6915 loopback_scope = stcb->asoc.scope.loopback_scope;
6917 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6918 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6921 local_scope = stcb->asoc.scope.local_scope;
6922 site_scope = stcb->asoc.scope.site_scope;
6923 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6925 SCTP_IPI_ADDR_RLOCK();
6926 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6928 /* no vrf, no addresses */
6929 SCTP_IPI_ADDR_RUNLOCK();
6933 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6935 * bound all case: go through all ifns on the vrf
6937 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6938 if ((loopback_scope == 0) &&
6939 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6942 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6943 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6945 switch (sctp_ifa->address.sa.sa_family) {
6948 if (ipv4_addr_legal) {
6949 struct sockaddr_in *sin;
6951 sin = &sctp_ifa->address.sin;
6952 if (sin->sin_addr.s_addr == 0) {
6959 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6960 &sin->sin_addr) != 0) {
6963 if ((ipv4_local_scope == 0) &&
6964 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6967 /* count this one */
6976 if (ipv6_addr_legal) {
6977 struct sockaddr_in6 *sin6;
6979 sin6 = &sctp_ifa->address.sin6;
6980 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6983 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6984 &sin6->sin6_addr) != 0) {
6987 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6988 if (local_scope == 0)
6990 if (sin6->sin6_scope_id == 0) {
6991 if (sa6_recoverscope(sin6) != 0)
7004 if ((site_scope == 0) &&
7005 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
7008 /* count this one */
7023 struct sctp_laddr *laddr;
7025 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
7027 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
7030 /* count this one */
7034 SCTP_IPI_ADDR_RUNLOCK();
7038 #if defined(SCTP_LOCAL_TRACE_BUF)
7041 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)
7043 uint32_t saveindex, newindex;
7046 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
7047 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
7050 newindex = saveindex + 1;
7052 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
7053 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
7056 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
7057 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
7058 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
7059 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
7060 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
7061 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
7062 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
7063 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
7068 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
7069 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
7073 struct ip6_hdr *ip6;
7075 struct mbuf *sp, *last;
7076 struct udphdr *uhdr;
7079 if ((m->m_flags & M_PKTHDR) == 0) {
7080 /* Can't handle one that is not a pkt hdr */
7083 /* Pull the src port */
7084 iph = mtod(m, struct ip *);
7085 uhdr = (struct udphdr *)((caddr_t)iph + off);
7086 port = uhdr->uh_sport;
7088 * Split out the mbuf chain. Leave the IP header in m, place the
7091 sp = m_split(m, off, M_NOWAIT);
7093 /* Gak, drop packet, we can't do a split */
7096 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
7097 /* Gak, packet can't have an SCTP header in it - too small */
7101 /* Now pull up the UDP header and SCTP header together */
7102 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
7104 /* Gak pullup failed */
7107 /* Trim out the UDP header */
7108 m_adj(sp, sizeof(struct udphdr));
7110 /* Now reconstruct the mbuf chain */
7111 for (last = m; last->m_next; last = last->m_next);
7113 m->m_pkthdr.len += sp->m_pkthdr.len;
7115 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
7116 * checksum and it was valid. Since CSUM_DATA_VALID ==
7117 * CSUM_SCTP_VALID this would imply that the HW also verified the
7118 * SCTP checksum. Therefore, clear the bit.
7120 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
7121 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
7123 if_name(m->m_pkthdr.rcvif),
7124 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
7125 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
7126 iph = mtod(m, struct ip *);
7127 switch (iph->ip_v) {
7130 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
7131 sctp_input_with_port(m, off, port);
7135 case IPV6_VERSION >> 4:
7136 ip6 = mtod(m, struct ip6_hdr *);
7137 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
7138 sctp6_input_with_port(&m, &off, port);
7152 sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED)
7154 struct ip *outer_ip, *inner_ip;
7158 struct sctp_inpcb *inp;
7159 struct sctp_tcb *stcb;
7160 struct sctp_nets *net;
7161 struct sctp_init_chunk *ch;
7162 struct sockaddr_in src, dst;
7165 inner_ip = (struct ip *)vip;
7166 icmp = (struct icmp *)((caddr_t)inner_ip -
7167 (sizeof(struct icmp) - sizeof(struct ip)));
7168 outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
7169 if (ntohs(outer_ip->ip_len) <
7170 sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
7173 udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
7174 sh = (struct sctphdr *)(udp + 1);
7175 memset(&src, 0, sizeof(struct sockaddr_in));
7176 src.sin_family = AF_INET;
7177 src.sin_len = sizeof(struct sockaddr_in);
7178 src.sin_port = sh->src_port;
7179 src.sin_addr = inner_ip->ip_src;
7180 memset(&dst, 0, sizeof(struct sockaddr_in));
7181 dst.sin_family = AF_INET;
7182 dst.sin_len = sizeof(struct sockaddr_in);
7183 dst.sin_port = sh->dest_port;
7184 dst.sin_addr = inner_ip->ip_dst;
7186 * 'dst' holds the dest of the packet that failed to be sent. 'src'
7187 * holds our local endpoint address. Thus we reverse the dst and the
7188 * src in the lookup.
7192 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7193 (struct sockaddr *)&src,
7195 SCTP_DEFAULT_VRFID);
7196 if ((stcb != NULL) &&
7199 /* Check the UDP port numbers */
7200 if ((udp->uh_dport != net->port) ||
7201 (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7202 SCTP_TCB_UNLOCK(stcb);
7205 /* Check the verification tag */
7206 if (ntohl(sh->v_tag) != 0) {
7208 * This must be the verification tag used for
7209 * sending out packets. We don't consider packets
7210 * reflecting the verification tag.
7212 if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
7213 SCTP_TCB_UNLOCK(stcb);
7217 if (ntohs(outer_ip->ip_len) >=
7219 8 + (inner_ip->ip_hl << 2) + 8 + 20) {
7221 * In this case we can check if we got an
7222 * INIT chunk and if the initiate tag
7225 ch = (struct sctp_init_chunk *)(sh + 1);
7226 if ((ch->ch.chunk_type != SCTP_INITIATION) ||
7227 (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
7228 SCTP_TCB_UNLOCK(stcb);
7232 SCTP_TCB_UNLOCK(stcb);
7236 type = icmp->icmp_type;
7237 code = icmp->icmp_code;
7238 if ((type == ICMP_UNREACH) &&
7239 (code == ICMP_UNREACH_PORT)) {
7240 code = ICMP_UNREACH_PROTOCOL;
7242 sctp_notify(inp, stcb, net, type, code,
7243 ntohs(inner_ip->ip_len),
7244 (uint32_t)ntohs(icmp->icmp_nextmtu));
7246 if ((stcb == NULL) && (inp != NULL)) {
7247 /* reduce ref-count */
7248 SCTP_INP_WLOCK(inp);
7249 SCTP_INP_DECR_REF(inp);
7250 SCTP_INP_WUNLOCK(inp);
7253 SCTP_TCB_UNLOCK(stcb);
7262 sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED)
7264 struct ip6ctlparam *ip6cp;
7265 struct sctp_inpcb *inp;
7266 struct sctp_tcb *stcb;
7267 struct sctp_nets *net;
7270 struct sockaddr_in6 src, dst;
7273 ip6cp = (struct ip6ctlparam *)d;
7275 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid.
7277 if (ip6cp->ip6c_m == NULL) {
7281 * Check if we can safely examine the ports and the verification tag
7282 * of the SCTP common header.
7284 if (ip6cp->ip6c_m->m_pkthdr.len <
7285 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) {
7288 /* Copy out the UDP header. */
7289 memset(&udp, 0, sizeof(struct udphdr));
7290 m_copydata(ip6cp->ip6c_m,
7292 sizeof(struct udphdr),
7294 /* Copy out the port numbers and the verification tag. */
7295 memset(&sh, 0, sizeof(struct sctphdr));
7296 m_copydata(ip6cp->ip6c_m,
7297 ip6cp->ip6c_off + sizeof(struct udphdr),
7298 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
7300 memset(&src, 0, sizeof(struct sockaddr_in6));
7301 src.sin6_family = AF_INET6;
7302 src.sin6_len = sizeof(struct sockaddr_in6);
7303 src.sin6_port = sh.src_port;
7304 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
7305 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7308 memset(&dst, 0, sizeof(struct sockaddr_in6));
7309 dst.sin6_family = AF_INET6;
7310 dst.sin6_len = sizeof(struct sockaddr_in6);
7311 dst.sin6_port = sh.dest_port;
7312 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
7313 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7318 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7319 (struct sockaddr *)&src,
7320 &inp, &net, 1, SCTP_DEFAULT_VRFID);
7321 if ((stcb != NULL) &&
7324 /* Check the UDP port numbers */
7325 if ((udp.uh_dport != net->port) ||
7326 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7327 SCTP_TCB_UNLOCK(stcb);
7330 /* Check the verification tag */
7331 if (ntohl(sh.v_tag) != 0) {
7333 * This must be the verification tag used for
7334 * sending out packets. We don't consider packets
7335 * reflecting the verification tag.
7337 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
7338 SCTP_TCB_UNLOCK(stcb);
7342 if (ip6cp->ip6c_m->m_pkthdr.len >=
7343 ip6cp->ip6c_off + sizeof(struct udphdr) +
7344 sizeof(struct sctphdr) +
7345 sizeof(struct sctp_chunkhdr) +
7346 offsetof(struct sctp_init, a_rwnd)) {
7348 * In this case we can check if we got an
7349 * INIT chunk and if the initiate tag
7352 uint32_t initiate_tag;
7355 m_copydata(ip6cp->ip6c_m,
7357 sizeof(struct udphdr) +
7358 sizeof(struct sctphdr),
7360 (caddr_t)&chunk_type);
7361 m_copydata(ip6cp->ip6c_m,
7363 sizeof(struct udphdr) +
7364 sizeof(struct sctphdr) +
7365 sizeof(struct sctp_chunkhdr),
7367 (caddr_t)&initiate_tag);
7368 if ((chunk_type != SCTP_INITIATION) ||
7369 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
7370 SCTP_TCB_UNLOCK(stcb);
7374 SCTP_TCB_UNLOCK(stcb);
7378 type = ip6cp->ip6c_icmp6->icmp6_type;
7379 code = ip6cp->ip6c_icmp6->icmp6_code;
7380 if ((type == ICMP6_DST_UNREACH) &&
7381 (code == ICMP6_DST_UNREACH_NOPORT)) {
7382 type = ICMP6_PARAM_PROB;
7383 code = ICMP6_PARAMPROB_NEXTHEADER;
7385 sctp6_notify(inp, stcb, net, type, code,
7386 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
7388 if ((stcb == NULL) && (inp != NULL)) {
7389 /* reduce inp's ref-count */
7390 SCTP_INP_WLOCK(inp);
7391 SCTP_INP_DECR_REF(inp);
7392 SCTP_INP_WUNLOCK(inp);
7395 SCTP_TCB_UNLOCK(stcb);
7402 sctp_over_udp_stop(void)
7405 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7409 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7410 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7411 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7415 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7416 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7417 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7423 sctp_over_udp_start(void)
7428 struct sockaddr_in sin;
7431 struct sockaddr_in6 sin6;
7434 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7437 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7438 if (ntohs(port) == 0) {
7439 /* Must have a port set */
7443 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7444 /* Already running -- must stop first */
7449 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7450 /* Already running -- must stop first */
7455 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7456 SOCK_DGRAM, IPPROTO_UDP,
7457 curthread->td_ucred, curthread))) {
7458 sctp_over_udp_stop();
7461 /* Call the special UDP hook. */
7462 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7463 sctp_recv_udp_tunneled_packet,
7464 sctp_recv_icmp_tunneled_packet,
7466 sctp_over_udp_stop();
7469 /* Ok, we have a socket, bind it to the port. */
7470 memset(&sin, 0, sizeof(struct sockaddr_in));
7471 sin.sin_len = sizeof(struct sockaddr_in);
7472 sin.sin_family = AF_INET;
7473 sin.sin_port = htons(port);
7474 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7475 (struct sockaddr *)&sin, curthread))) {
7476 sctp_over_udp_stop();
7481 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7482 SOCK_DGRAM, IPPROTO_UDP,
7483 curthread->td_ucred, curthread))) {
7484 sctp_over_udp_stop();
7487 /* Call the special UDP hook. */
7488 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7489 sctp_recv_udp_tunneled_packet,
7490 sctp_recv_icmp6_tunneled_packet,
7492 sctp_over_udp_stop();
7495 /* Ok, we have a socket, bind it to the port. */
7496 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7497 sin6.sin6_len = sizeof(struct sockaddr_in6);
7498 sin6.sin6_family = AF_INET6;
7499 sin6.sin6_port = htons(port);
7500 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7501 (struct sockaddr *)&sin6, curthread))) {
7502 sctp_over_udp_stop();
7510 * sctp_min_mtu ()returns the minimum of all non-zero arguments.
7511 * If all arguments are zero, zero is returned.
7514 sctp_min_mtu(uint32_t mtu1, uint32_t mtu2, uint32_t mtu3)
7519 return (min(mtu1, min(mtu2, mtu3)));
7521 return (min(mtu1, mtu2));
7525 return (min(mtu1, mtu3));
7533 return (min(mtu2, mtu3));
7544 sctp_hc_set_mtu(union sctp_sockstore *addr, uint16_t fibnum, uint32_t mtu)
7546 struct in_conninfo inc;
7548 memset(&inc, 0, sizeof(struct in_conninfo));
7549 inc.inc_fibnum = fibnum;
7550 switch (addr->sa.sa_family) {
7553 inc.inc_faddr = addr->sin.sin_addr;
7558 inc.inc_flags |= INC_ISIPV6;
7559 inc.inc6_faddr = addr->sin6.sin6_addr;
7565 tcp_hc_updatemtu(&inc, (u_long)mtu);
7569 sctp_hc_get_mtu(union sctp_sockstore *addr, uint16_t fibnum)
7571 struct in_conninfo inc;
7573 memset(&inc, 0, sizeof(struct in_conninfo));
7574 inc.inc_fibnum = fibnum;
7575 switch (addr->sa.sa_family) {
7578 inc.inc_faddr = addr->sin.sin_addr;
7583 inc.inc_flags |= INC_ISIPV6;
7584 inc.inc6_faddr = addr->sin6.sin6_addr;
7590 return ((uint32_t)tcp_hc_getmtu(&inc));
7594 sctp_set_state(struct sctp_tcb *stcb, int new_state)
7596 #if defined(KDTRACE_HOOKS)
7597 int old_state = stcb->asoc.state;
7600 KASSERT((new_state & ~SCTP_STATE_MASK) == 0,
7601 ("sctp_set_state: Can't set substate (new_state = %x)",
7603 stcb->asoc.state = (stcb->asoc.state & ~SCTP_STATE_MASK) | new_state;
7604 if ((new_state == SCTP_STATE_SHUTDOWN_RECEIVED) ||
7605 (new_state == SCTP_STATE_SHUTDOWN_SENT) ||
7606 (new_state == SCTP_STATE_SHUTDOWN_ACK_SENT)) {
7607 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_SHUTDOWN_PENDING);
7609 #if defined(KDTRACE_HOOKS)
7610 if (((old_state & SCTP_STATE_MASK) != new_state) &&
7611 !(((old_state & SCTP_STATE_MASK) == SCTP_STATE_EMPTY) &&
7612 (new_state == SCTP_STATE_INUSE))) {
7613 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);
7619 sctp_add_substate(struct sctp_tcb *stcb, int substate)
7621 #if defined(KDTRACE_HOOKS)
7622 int old_state = stcb->asoc.state;
7625 KASSERT((substate & SCTP_STATE_MASK) == 0,
7626 ("sctp_add_substate: Can't set state (substate = %x)",
7628 stcb->asoc.state |= substate;
7629 #if defined(KDTRACE_HOOKS)
7630 if (((substate & SCTP_STATE_ABOUT_TO_BE_FREED) &&
7631 ((old_state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) ||
7632 ((substate & SCTP_STATE_SHUTDOWN_PENDING) &&
7633 ((old_state & SCTP_STATE_SHUTDOWN_PENDING) == 0))) {
7634 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);