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;
1718 bool did_output, released_asoc_reference;
1721 * If inp, stcb or net are not NULL, then references to these were
1722 * added when the timer was started, and must be released before
1723 * this function returns.
1725 tmr = (struct sctp_timer *)t;
1726 inp = (struct sctp_inpcb *)tmr->ep;
1727 stcb = (struct sctp_tcb *)tmr->tcb;
1728 net = (struct sctp_nets *)tmr->net;
1729 CURVNET_SET((struct vnet *)tmr->vnet);
1731 released_asoc_reference = false;
1733 #ifdef SCTP_AUDITING_ENABLED
1734 sctp_audit_log(0xF0, (uint8_t)tmr->type);
1735 sctp_auditing(3, inp, stcb, net);
1738 /* sanity checks... */
1739 KASSERT(tmr->self == NULL || tmr->self == tmr,
1740 ("sctp_timeout_handler: tmr->self corrupted"));
1741 KASSERT(SCTP_IS_TIMER_TYPE_VALID(tmr->type),
1742 ("sctp_timeout_handler: invalid timer type %d", tmr->type));
1744 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
1745 ("sctp_timeout_handler of type %d: inp = %p, stcb->sctp_ep %p",
1746 type, stcb, stcb->sctp_ep));
1747 tmr->stopped_from = 0xa001;
1748 if ((stcb != NULL) && (stcb->asoc.state == SCTP_STATE_EMPTY)) {
1749 SCTPDBG(SCTP_DEBUG_TIMER2,
1750 "Timer type %d handler exiting due to CLOSED association.\n",
1754 tmr->stopped_from = 0xa002;
1755 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d goes off.\n", type);
1756 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1757 SCTPDBG(SCTP_DEBUG_TIMER2,
1758 "Timer type %d handler exiting due to not being active.\n",
1763 tmr->stopped_from = 0xa003;
1765 SCTP_TCB_LOCK(stcb);
1767 * Release reference so that association can be freed if
1768 * necessary below. This is safe now that we have acquired
1771 atomic_add_int(&stcb->asoc.refcnt, -1);
1772 released_asoc_reference = true;
1773 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1774 ((stcb->asoc.state == SCTP_STATE_EMPTY) ||
1775 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1776 SCTPDBG(SCTP_DEBUG_TIMER2,
1777 "Timer type %d handler exiting due to CLOSED association.\n",
1781 } else if (inp != NULL) {
1782 SCTP_INP_WLOCK(inp);
1784 SCTP_WQ_ADDR_LOCK();
1787 /* Record in stopped_from which timeout occurred. */
1788 tmr->stopped_from = type;
1789 NET_EPOCH_ENTER(et);
1790 /* mark as being serviced now */
1791 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1793 * Callout has been rescheduled.
1797 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1799 * Not active, so no action.
1803 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1805 /* call the handler for the appropriate timer type */
1807 case SCTP_TIMER_TYPE_SEND:
1808 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1809 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1810 type, inp, stcb, net));
1811 SCTP_STAT_INCR(sctps_timodata);
1812 stcb->asoc.timodata++;
1813 stcb->asoc.num_send_timers_up--;
1814 if (stcb->asoc.num_send_timers_up < 0) {
1815 stcb->asoc.num_send_timers_up = 0;
1817 SCTP_TCB_LOCK_ASSERT(stcb);
1818 if (sctp_t3rxt_timer(inp, stcb, net)) {
1819 /* no need to unlock on tcb its gone */
1823 SCTP_TCB_LOCK_ASSERT(stcb);
1824 #ifdef SCTP_AUDITING_ENABLED
1825 sctp_auditing(4, inp, stcb, net);
1827 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1829 if ((stcb->asoc.num_send_timers_up == 0) &&
1830 (stcb->asoc.sent_queue_cnt > 0)) {
1831 struct sctp_tmit_chunk *chk;
1834 * Safeguard. If there on some on the sent queue
1835 * somewhere but no timers running something is
1836 * wrong... so we start a timer on the first chunk
1837 * on the send queue on whatever net it is sent to.
1839 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
1840 if (chk->whoTo != NULL) {
1845 sctp_timer_start(SCTP_TIMER_TYPE_SEND, stcb->sctp_ep, stcb, chk->whoTo);
1849 case SCTP_TIMER_TYPE_INIT:
1850 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1851 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1852 type, inp, stcb, net));
1853 SCTP_STAT_INCR(sctps_timoinit);
1854 stcb->asoc.timoinit++;
1855 if (sctp_t1init_timer(inp, stcb, net)) {
1856 /* no need to unlock on tcb its gone */
1861 case SCTP_TIMER_TYPE_RECV:
1862 KASSERT(inp != NULL && stcb != NULL && net == NULL,
1863 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1864 type, inp, stcb, net));
1865 SCTP_STAT_INCR(sctps_timosack);
1866 stcb->asoc.timosack++;
1867 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1868 #ifdef SCTP_AUDITING_ENABLED
1869 sctp_auditing(4, inp, stcb, NULL);
1871 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1874 case SCTP_TIMER_TYPE_SHUTDOWN:
1875 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1876 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1877 type, inp, stcb, net));
1878 SCTP_STAT_INCR(sctps_timoshutdown);
1879 stcb->asoc.timoshutdown++;
1880 if (sctp_shutdown_timer(inp, stcb, net)) {
1881 /* no need to unlock on tcb its gone */
1884 #ifdef SCTP_AUDITING_ENABLED
1885 sctp_auditing(4, inp, stcb, net);
1887 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1890 case SCTP_TIMER_TYPE_HEARTBEAT:
1891 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1892 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1893 type, inp, stcb, net));
1894 SCTP_STAT_INCR(sctps_timoheartbeat);
1895 stcb->asoc.timoheartbeat++;
1896 if (sctp_heartbeat_timer(inp, stcb, net)) {
1897 /* no need to unlock on tcb its gone */
1900 #ifdef SCTP_AUDITING_ENABLED
1901 sctp_auditing(4, inp, stcb, net);
1903 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1904 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1905 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1911 case SCTP_TIMER_TYPE_COOKIE:
1912 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1913 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1914 type, inp, stcb, net));
1915 SCTP_STAT_INCR(sctps_timocookie);
1916 stcb->asoc.timocookie++;
1917 if (sctp_cookie_timer(inp, stcb, net)) {
1918 /* no need to unlock on tcb its gone */
1921 #ifdef SCTP_AUDITING_ENABLED
1922 sctp_auditing(4, inp, stcb, net);
1925 * We consider T3 and Cookie timer pretty much the same with
1926 * respect to where from in chunk_output.
1928 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1931 case SCTP_TIMER_TYPE_NEWCOOKIE:
1932 KASSERT(inp != NULL && stcb == NULL && net == NULL,
1933 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1934 type, inp, stcb, net));
1935 SCTP_STAT_INCR(sctps_timosecret);
1936 (void)SCTP_GETTIME_TIMEVAL(&tv);
1937 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1938 inp->sctp_ep.last_secret_number =
1939 inp->sctp_ep.current_secret_number;
1940 inp->sctp_ep.current_secret_number++;
1941 if (inp->sctp_ep.current_secret_number >=
1942 SCTP_HOW_MANY_SECRETS) {
1943 inp->sctp_ep.current_secret_number = 0;
1945 secret = (int)inp->sctp_ep.current_secret_number;
1946 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1947 inp->sctp_ep.secret_key[secret][i] =
1948 sctp_select_initial_TSN(&inp->sctp_ep);
1950 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, NULL, NULL);
1953 case SCTP_TIMER_TYPE_PATHMTURAISE:
1954 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1955 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1956 type, inp, stcb, net));
1957 SCTP_STAT_INCR(sctps_timopathmtu);
1958 sctp_pathmtu_timer(inp, stcb, net);
1961 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1962 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1963 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1964 type, inp, stcb, net));
1965 if (sctp_shutdownack_timer(inp, stcb, net)) {
1966 /* no need to unlock on tcb its gone */
1969 SCTP_STAT_INCR(sctps_timoshutdownack);
1970 stcb->asoc.timoshutdownack++;
1971 #ifdef SCTP_AUDITING_ENABLED
1972 sctp_auditing(4, inp, stcb, net);
1974 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1977 case SCTP_TIMER_TYPE_ASCONF:
1978 KASSERT(inp != NULL && stcb != NULL && net != NULL,
1979 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1980 type, inp, stcb, net));
1981 SCTP_STAT_INCR(sctps_timoasconf);
1982 if (sctp_asconf_timer(inp, stcb, net)) {
1983 /* no need to unlock on tcb its gone */
1986 #ifdef SCTP_AUDITING_ENABLED
1987 sctp_auditing(4, inp, stcb, net);
1989 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1992 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1993 KASSERT(inp != NULL && stcb != NULL && net == NULL,
1994 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
1995 type, inp, stcb, net));
1996 SCTP_STAT_INCR(sctps_timoshutdownguard);
1997 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
1998 "Shutdown guard timer expired");
1999 sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
2001 /* no need to unlock on tcb its gone */
2003 case SCTP_TIMER_TYPE_AUTOCLOSE:
2004 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2005 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2006 type, inp, stcb, net));
2007 SCTP_STAT_INCR(sctps_timoautoclose);
2008 sctp_autoclose_timer(inp, stcb);
2009 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
2012 case SCTP_TIMER_TYPE_STRRESET:
2013 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2014 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2015 type, inp, stcb, net));
2016 SCTP_STAT_INCR(sctps_timostrmrst);
2017 if (sctp_strreset_timer(inp, stcb)) {
2018 /* no need to unlock on tcb its gone */
2021 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
2024 case SCTP_TIMER_TYPE_INPKILL:
2025 KASSERT(inp != NULL && stcb == NULL && net == NULL,
2026 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2027 type, inp, stcb, net));
2028 SCTP_STAT_INCR(sctps_timoinpkill);
2030 * special case, take away our increment since WE are the
2033 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
2034 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
2035 SCTP_INP_DECR_REF(inp);
2036 SCTP_INP_WUNLOCK(inp);
2037 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
2038 SCTP_CALLED_FROM_INPKILL_TIMER);
2041 case SCTP_TIMER_TYPE_ASOCKILL:
2042 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2043 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2044 type, inp, stcb, net));
2045 SCTP_STAT_INCR(sctps_timoassockill);
2046 /* Can we free it yet? */
2047 SCTP_INP_DECR_REF(inp);
2048 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
2049 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
2050 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
2051 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
2053 * free asoc, always unlocks (or destroy's) so prevent
2054 * duplicate unlock or unlock of a free mtx :-0
2058 case SCTP_TIMER_TYPE_ADDR_WQ:
2059 KASSERT(inp == NULL && stcb == NULL && net == NULL,
2060 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2061 type, inp, stcb, net));
2062 sctp_handle_addr_wq();
2065 case SCTP_TIMER_TYPE_PRIM_DELETED:
2066 KASSERT(inp != NULL && stcb != NULL && net == NULL,
2067 ("timeout of type %d: inp = %p, stcb = %p, net = %p",
2068 type, inp, stcb, net));
2069 SCTP_STAT_INCR(sctps_timodelprim);
2070 sctp_delete_prim_timer(inp, stcb);
2075 panic("Unknown timer type %d", type);
2081 #ifdef SCTP_AUDITING_ENABLED
2082 sctp_audit_log(0xF1, (uint8_t)type);
2084 sctp_auditing(5, inp, stcb, net);
2086 if (did_output && (stcb != NULL)) {
2088 * Now we need to clean up the control chunk chain if an
2089 * ECNE is on it. It must be marked as UNSENT again so next
2090 * call will continue to send it until such time that we get
2091 * a CWR, to remove it. It is, however, less likely that we
2092 * will find a ecn echo on the chain though.
2094 sctp_fix_ecn_echo(&stcb->asoc);
2098 SCTP_TCB_UNLOCK(stcb);
2099 } else if (inp != NULL) {
2100 SCTP_INP_WUNLOCK(inp);
2102 SCTP_WQ_ADDR_UNLOCK();
2106 /* These reference counts were incremented in sctp_timer_start(). */
2108 SCTP_INP_DECR_REF(inp);
2110 if ((stcb != NULL) && !released_asoc_reference) {
2111 atomic_add_int(&stcb->asoc.refcnt, -1);
2114 sctp_free_remote_addr(net);
2117 SCTPDBG(SCTP_DEBUG_TIMER2, "Timer type %d handler finished.\n", type);
2123 * The following table shows which parameters must be provided
2124 * when calling sctp_timer_start(). For parameters not being
2125 * provided, NULL must be used.
2127 * |Name |inp |stcb|net |
2128 * |-----------------------------|----|----|----|
2129 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes |
2130 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes |
2131 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No |
2132 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes |
2133 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes |
2134 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes |
2135 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No |
2136 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes |
2137 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes |
2138 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |Yes |
2139 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No |
2140 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No |
2141 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |Yes |
2142 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No |
2143 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No |
2144 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No |
2145 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No |
2150 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2151 struct sctp_nets *net)
2153 struct sctp_timer *tmr;
2155 uint32_t rndval, jitter;
2157 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
2158 ("sctp_timer_start of type %d: inp = %p, stcb->sctp_ep %p",
2159 t_type, stcb, stcb->sctp_ep));
2163 SCTP_TCB_LOCK_ASSERT(stcb);
2164 } else if (inp != NULL) {
2165 SCTP_INP_WLOCK_ASSERT(inp);
2167 SCTP_WQ_ADDR_LOCK_ASSERT();
2171 * Don't restart timer on association that's about to be
2174 if ((stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) &&
2175 (t_type != SCTP_TIMER_TYPE_ASOCKILL)) {
2176 SCTPDBG(SCTP_DEBUG_TIMER2,
2177 "Timer type %d not started: inp=%p, stcb=%p, net=%p (stcb deleted).\n",
2178 t_type, inp, stcb, net);
2181 /* Don't restart timer on net that's been removed. */
2182 if (net != NULL && (net->dest_state & SCTP_ADDR_BEING_DELETED)) {
2183 SCTPDBG(SCTP_DEBUG_TIMER2,
2184 "Timer type %d not started: inp=%p, stcb=%p, net=%p (net deleted).\n",
2185 t_type, inp, stcb, net);
2190 case SCTP_TIMER_TYPE_SEND:
2191 /* Here we use the RTO timer. */
2192 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2194 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2195 t_type, inp, stcb, net);
2200 tmr = &net->rxt_timer;
2201 if (net->RTO == 0) {
2202 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2204 to_ticks = sctp_msecs_to_ticks(net->RTO);
2207 case SCTP_TIMER_TYPE_INIT:
2209 * Here we use the INIT timer default usually about 1
2212 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2214 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2215 t_type, inp, stcb, net);
2220 tmr = &net->rxt_timer;
2221 if (net->RTO == 0) {
2222 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2224 to_ticks = sctp_msecs_to_ticks(net->RTO);
2227 case SCTP_TIMER_TYPE_RECV:
2229 * Here we use the Delayed-Ack timer value from the inp,
2230 * ususually about 200ms.
2232 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2234 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2235 t_type, inp, stcb, net);
2240 tmr = &stcb->asoc.dack_timer;
2241 to_ticks = sctp_msecs_to_ticks(stcb->asoc.delayed_ack);
2243 case SCTP_TIMER_TYPE_SHUTDOWN:
2244 /* Here we use the RTO of the destination. */
2245 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2247 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2248 t_type, inp, stcb, net);
2253 tmr = &net->rxt_timer;
2254 if (net->RTO == 0) {
2255 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2257 to_ticks = sctp_msecs_to_ticks(net->RTO);
2260 case SCTP_TIMER_TYPE_HEARTBEAT:
2262 * The net is used here so that we can add in the RTO. Even
2263 * though we use a different timer. We also add the HB timer
2264 * PLUS a random jitter.
2266 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2268 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2269 t_type, inp, stcb, net);
2274 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2275 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2276 SCTPDBG(SCTP_DEBUG_TIMER2,
2277 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n",
2278 t_type, inp, stcb, net);
2281 tmr = &net->hb_timer;
2282 if (net->RTO == 0) {
2283 to_ticks = stcb->asoc.initial_rto;
2285 to_ticks = net->RTO;
2287 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2288 jitter = rndval % to_ticks;
2289 if (jitter >= (to_ticks >> 1)) {
2290 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
2292 to_ticks = to_ticks - jitter;
2294 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2295 !(net->dest_state & SCTP_ADDR_PF)) {
2296 to_ticks += net->heart_beat_delay;
2299 * Now we must convert the to_ticks that are now in ms to
2302 to_ticks = sctp_msecs_to_ticks(to_ticks);
2304 case SCTP_TIMER_TYPE_COOKIE:
2306 * Here we can use the RTO timer from the network since one
2307 * RTT was complete. If a retransmission happened then we
2308 * will be using the RTO initial value.
2310 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2312 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2313 t_type, inp, stcb, net);
2318 tmr = &net->rxt_timer;
2319 if (net->RTO == 0) {
2320 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2322 to_ticks = sctp_msecs_to_ticks(net->RTO);
2325 case SCTP_TIMER_TYPE_NEWCOOKIE:
2327 * Nothing needed but the endpoint here ususually about 60
2330 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2332 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2333 t_type, inp, stcb, net);
2338 tmr = &inp->sctp_ep.signature_change;
2339 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2341 case SCTP_TIMER_TYPE_PATHMTURAISE:
2343 * Here we use the value found in the EP for PMTUD,
2344 * ususually about 10 minutes.
2346 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2348 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2349 t_type, inp, stcb, net);
2354 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2355 SCTPDBG(SCTP_DEBUG_TIMER2,
2356 "Timer type %d not started: inp=%p, stcb=%p, net=%p.\n",
2357 t_type, inp, stcb, net);
2360 tmr = &net->pmtu_timer;
2361 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2363 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2364 /* Here we use the RTO of the destination. */
2365 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2367 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2368 t_type, inp, stcb, net);
2373 tmr = &net->rxt_timer;
2374 if (net->RTO == 0) {
2375 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2377 to_ticks = sctp_msecs_to_ticks(net->RTO);
2380 case SCTP_TIMER_TYPE_ASCONF:
2382 * Here the timer comes from the stcb but its value is from
2385 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2387 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2388 t_type, inp, stcb, net);
2393 tmr = &stcb->asoc.asconf_timer;
2394 if (net->RTO == 0) {
2395 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2397 to_ticks = sctp_msecs_to_ticks(net->RTO);
2400 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2402 * Here we use the endpoints shutdown guard timer usually
2405 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2407 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2408 t_type, inp, stcb, net);
2413 tmr = &stcb->asoc.shut_guard_timer;
2414 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2415 if (stcb->asoc.maxrto < UINT32_MAX / 5) {
2416 to_ticks = sctp_msecs_to_ticks(5 * stcb->asoc.maxrto);
2418 to_ticks = sctp_msecs_to_ticks(UINT32_MAX);
2421 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2424 case SCTP_TIMER_TYPE_AUTOCLOSE:
2425 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2427 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2428 t_type, inp, stcb, net);
2433 tmr = &stcb->asoc.autoclose_timer;
2434 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2436 case SCTP_TIMER_TYPE_STRRESET:
2438 * Here the timer comes from the stcb but its value is from
2441 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2443 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2444 t_type, inp, stcb, net);
2449 tmr = &stcb->asoc.strreset_timer;
2450 if (net->RTO == 0) {
2451 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2453 to_ticks = sctp_msecs_to_ticks(net->RTO);
2456 case SCTP_TIMER_TYPE_INPKILL:
2458 * The inp is setup to die. We re-use the signature_chage
2459 * timer since that has stopped and we are in the GONE
2462 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2464 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2465 t_type, inp, stcb, net);
2470 tmr = &inp->sctp_ep.signature_change;
2471 to_ticks = sctp_msecs_to_ticks(SCTP_INP_KILL_TIMEOUT);
2473 case SCTP_TIMER_TYPE_ASOCKILL:
2474 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2476 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2477 t_type, inp, stcb, net);
2482 tmr = &stcb->asoc.strreset_timer;
2483 to_ticks = sctp_msecs_to_ticks(SCTP_ASOC_KILL_TIMEOUT);
2485 case SCTP_TIMER_TYPE_ADDR_WQ:
2486 if ((inp != NULL) || (stcb != NULL) || (net != NULL)) {
2488 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2489 t_type, inp, stcb, net);
2494 /* Only 1 tick away :-) */
2495 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2496 to_ticks = SCTP_ADDRESS_TICK_DELAY;
2498 case SCTP_TIMER_TYPE_PRIM_DELETED:
2499 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2501 panic("sctp_timer_start of type %d: inp = %p, stcb = %p, net = %p",
2502 t_type, inp, stcb, net);
2507 tmr = &stcb->asoc.delete_prim_timer;
2508 to_ticks = sctp_msecs_to_ticks(stcb->asoc.initial_rto);
2512 panic("Unknown timer type %d", t_type);
2517 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type));
2518 KASSERT(to_ticks > 0, ("to_ticks == 0 for timer type %d", t_type));
2519 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2521 * We do NOT allow you to have it already running. If it is,
2522 * we leave the current one up unchanged.
2524 SCTPDBG(SCTP_DEBUG_TIMER2,
2525 "Timer type %d already running: inp=%p, stcb=%p, net=%p.\n",
2526 t_type, inp, stcb, net);
2529 /* At this point we can proceed. */
2530 if (t_type == SCTP_TIMER_TYPE_SEND) {
2531 stcb->asoc.num_send_timers_up++;
2533 tmr->stopped_from = 0;
2535 tmr->ep = (void *)inp;
2536 tmr->tcb = (void *)stcb;
2537 if (t_type == SCTP_TIMER_TYPE_STRRESET) {
2540 tmr->net = (void *)net;
2542 tmr->self = (void *)tmr;
2543 tmr->vnet = (void *)curvnet;
2544 tmr->ticks = sctp_get_tick_count();
2545 if (SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr) == 0) {
2546 SCTPDBG(SCTP_DEBUG_TIMER2,
2547 "Timer type %d started: ticks=%u, inp=%p, stcb=%p, net=%p.\n",
2548 t_type, to_ticks, inp, stcb, net);
2550 * If this is a newly scheduled callout, as opposed to a
2551 * rescheduled one, increment relevant reference counts.
2553 if (tmr->ep != NULL) {
2554 SCTP_INP_INCR_REF(inp);
2556 if (tmr->tcb != NULL) {
2557 atomic_add_int(&stcb->asoc.refcnt, 1);
2559 if (tmr->net != NULL) {
2560 atomic_add_int(&net->ref_count, 1);
2564 * This should not happen, since we checked for pending
2567 SCTPDBG(SCTP_DEBUG_TIMER2,
2568 "Timer type %d restarted: ticks=%u, inp=%p, stcb=%p, net=%p.\n",
2569 t_type, to_ticks, inp, stcb, net);
2575 * The following table shows which parameters must be provided
2576 * when calling sctp_timer_stop(). For parameters not being
2577 * provided, NULL must be used.
2579 * |Name |inp |stcb|net |
2580 * |-----------------------------|----|----|----|
2581 * |SCTP_TIMER_TYPE_SEND |Yes |Yes |Yes |
2582 * |SCTP_TIMER_TYPE_INIT |Yes |Yes |Yes |
2583 * |SCTP_TIMER_TYPE_RECV |Yes |Yes |No |
2584 * |SCTP_TIMER_TYPE_SHUTDOWN |Yes |Yes |Yes |
2585 * |SCTP_TIMER_TYPE_HEARTBEAT |Yes |Yes |Yes |
2586 * |SCTP_TIMER_TYPE_COOKIE |Yes |Yes |Yes |
2587 * |SCTP_TIMER_TYPE_NEWCOOKIE |Yes |No |No |
2588 * |SCTP_TIMER_TYPE_PATHMTURAISE |Yes |Yes |Yes |
2589 * |SCTP_TIMER_TYPE_SHUTDOWNACK |Yes |Yes |Yes |
2590 * |SCTP_TIMER_TYPE_ASCONF |Yes |Yes |No |
2591 * |SCTP_TIMER_TYPE_SHUTDOWNGUARD|Yes |Yes |No |
2592 * |SCTP_TIMER_TYPE_AUTOCLOSE |Yes |Yes |No |
2593 * |SCTP_TIMER_TYPE_STRRESET |Yes |Yes |No |
2594 * |SCTP_TIMER_TYPE_INPKILL |Yes |No |No |
2595 * |SCTP_TIMER_TYPE_ASOCKILL |Yes |Yes |No |
2596 * |SCTP_TIMER_TYPE_ADDR_WQ |No |No |No |
2597 * |SCTP_TIMER_TYPE_PRIM_DELETED |Yes |Yes |No |
2602 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2603 struct sctp_nets *net, uint32_t from)
2605 struct sctp_timer *tmr;
2607 KASSERT(stcb == NULL || stcb->sctp_ep == inp,
2608 ("sctp_timer_stop of type %d: inp = %p, stcb->sctp_ep %p",
2609 t_type, stcb, stcb->sctp_ep));
2611 SCTP_TCB_LOCK_ASSERT(stcb);
2612 } else if (inp != NULL) {
2613 SCTP_INP_WLOCK_ASSERT(inp);
2615 SCTP_WQ_ADDR_LOCK_ASSERT();
2619 case SCTP_TIMER_TYPE_SEND:
2620 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2622 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2623 t_type, inp, stcb, net);
2628 tmr = &net->rxt_timer;
2630 case SCTP_TIMER_TYPE_INIT:
2631 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2633 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2634 t_type, inp, stcb, net);
2639 tmr = &net->rxt_timer;
2641 case SCTP_TIMER_TYPE_RECV:
2642 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2644 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2645 t_type, inp, stcb, net);
2650 tmr = &stcb->asoc.dack_timer;
2652 case SCTP_TIMER_TYPE_SHUTDOWN:
2653 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2655 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2656 t_type, inp, stcb, net);
2661 tmr = &net->rxt_timer;
2663 case SCTP_TIMER_TYPE_HEARTBEAT:
2664 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2666 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2667 t_type, inp, stcb, net);
2672 tmr = &net->hb_timer;
2674 case SCTP_TIMER_TYPE_COOKIE:
2675 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2677 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2678 t_type, inp, stcb, net);
2683 tmr = &net->rxt_timer;
2685 case SCTP_TIMER_TYPE_NEWCOOKIE:
2686 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2688 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2689 t_type, inp, stcb, net);
2694 tmr = &inp->sctp_ep.signature_change;
2696 case SCTP_TIMER_TYPE_PATHMTURAISE:
2697 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2699 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2700 t_type, inp, stcb, net);
2705 tmr = &net->pmtu_timer;
2707 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2708 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
2710 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2711 t_type, inp, stcb, net);
2716 tmr = &net->rxt_timer;
2718 case SCTP_TIMER_TYPE_ASCONF:
2719 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2721 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2722 t_type, inp, stcb, net);
2727 tmr = &stcb->asoc.asconf_timer;
2729 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2730 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2732 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2733 t_type, inp, stcb, net);
2738 tmr = &stcb->asoc.shut_guard_timer;
2740 case SCTP_TIMER_TYPE_AUTOCLOSE:
2741 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2743 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2744 t_type, inp, stcb, net);
2749 tmr = &stcb->asoc.autoclose_timer;
2751 case SCTP_TIMER_TYPE_STRRESET:
2752 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2754 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2755 t_type, inp, stcb, net);
2760 tmr = &stcb->asoc.strreset_timer;
2762 case SCTP_TIMER_TYPE_INPKILL:
2764 * The inp is setup to die. We re-use the signature_chage
2765 * timer since that has stopped and we are in the GONE
2768 if ((inp == NULL) || (stcb != NULL) || (net != NULL)) {
2770 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2771 t_type, inp, stcb, net);
2776 tmr = &inp->sctp_ep.signature_change;
2778 case SCTP_TIMER_TYPE_ASOCKILL:
2779 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2781 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2782 t_type, inp, stcb, net);
2787 tmr = &stcb->asoc.strreset_timer;
2789 case SCTP_TIMER_TYPE_ADDR_WQ:
2790 if ((inp != NULL) || (stcb != NULL) || (net != NULL)) {
2792 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2793 t_type, inp, stcb, net);
2798 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2800 case SCTP_TIMER_TYPE_PRIM_DELETED:
2801 if ((inp == NULL) || (stcb == NULL) || (net != NULL)) {
2803 panic("sctp_timer_stop of type %d: inp = %p, stcb = %p, net = %p",
2804 t_type, inp, stcb, net);
2809 tmr = &stcb->asoc.delete_prim_timer;
2813 panic("Unknown timer type %d", t_type);
2818 KASSERT(tmr != NULL, ("tmr is NULL for timer type %d", t_type));
2819 if ((tmr->type != SCTP_TIMER_TYPE_NONE) &&
2820 (tmr->type != t_type)) {
2822 * Ok we have a timer that is under joint use. Cookie timer
2823 * per chance with the SEND timer. We therefore are NOT
2824 * running the timer that the caller wants stopped. So just
2827 SCTPDBG(SCTP_DEBUG_TIMER2,
2828 "Shared timer type %d not running: inp=%p, stcb=%p, net=%p.\n",
2829 t_type, inp, stcb, net);
2832 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2833 stcb->asoc.num_send_timers_up--;
2834 if (stcb->asoc.num_send_timers_up < 0) {
2835 stcb->asoc.num_send_timers_up = 0;
2839 tmr->stopped_from = from;
2840 if (SCTP_OS_TIMER_STOP(&tmr->timer) == 1) {
2841 KASSERT(tmr->ep == inp,
2842 ("sctp_timer_stop of type %d: inp = %p, tmr->inp = %p",
2843 t_type, inp, tmr->ep));
2844 KASSERT(tmr->tcb == stcb,
2845 ("sctp_timer_stop of type %d: stcb = %p, tmr->stcb = %p",
2846 t_type, stcb, tmr->tcb));
2847 KASSERT(((t_type == SCTP_TIMER_TYPE_ASCONF) && (tmr->net != NULL)) ||
2848 ((t_type != SCTP_TIMER_TYPE_ASCONF) && (tmr->net == net)),
2849 ("sctp_timer_stop of type %d: net = %p, tmr->net = %p",
2850 t_type, net, tmr->net));
2851 SCTPDBG(SCTP_DEBUG_TIMER2,
2852 "Timer type %d stopped: inp=%p, stcb=%p, net=%p.\n",
2853 t_type, inp, stcb, net);
2855 * If the timer was actually stopped, decrement reference
2856 * counts that were incremented in sctp_timer_start().
2858 if (tmr->ep != NULL) {
2859 SCTP_INP_DECR_REF(inp);
2862 if (tmr->tcb != NULL) {
2863 atomic_add_int(&stcb->asoc.refcnt, -1);
2866 if (tmr->net != NULL) {
2868 * Can't use net, since it doesn't work for
2869 * SCTP_TIMER_TYPE_ASCONF.
2871 sctp_free_remote_addr((struct sctp_nets *)tmr->net);
2875 SCTPDBG(SCTP_DEBUG_TIMER2,
2876 "Timer type %d not stopped: inp=%p, stcb=%p, net=%p.\n",
2877 t_type, inp, stcb, net);
2883 sctp_calculate_len(struct mbuf *m)
2890 tlen += SCTP_BUF_LEN(at);
2891 at = SCTP_BUF_NEXT(at);
2897 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2898 struct sctp_association *asoc, uint32_t mtu)
2901 * Reset the P-MTU size on this association, this involves changing
2902 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2903 * allow the DF flag to be cleared.
2905 struct sctp_tmit_chunk *chk;
2906 unsigned int eff_mtu, ovh;
2908 asoc->smallest_mtu = mtu;
2909 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2910 ovh = SCTP_MIN_OVERHEAD;
2912 ovh = SCTP_MIN_V4_OVERHEAD;
2914 eff_mtu = mtu - ovh;
2915 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2916 if (chk->send_size > eff_mtu) {
2917 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2920 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2921 if (chk->send_size > eff_mtu) {
2922 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2929 * Given an association and starting time of the current RTT period, update
2930 * RTO in number of msecs. net should point to the current network.
2931 * Return 1, if an RTO update was performed, return 0 if no update was
2932 * performed due to invalid starting point.
2936 sctp_calculate_rto(struct sctp_tcb *stcb,
2937 struct sctp_association *asoc,
2938 struct sctp_nets *net,
2939 struct timeval *old,
2943 uint64_t rtt_us; /* RTT in us */
2944 int32_t rtt; /* RTT in ms */
2946 int first_measure = 0;
2948 /************************/
2949 /* 1. calculate new RTT */
2950 /************************/
2951 /* get the current time */
2952 if (stcb->asoc.use_precise_time) {
2953 (void)SCTP_GETPTIME_TIMEVAL(&now);
2955 (void)SCTP_GETTIME_TIMEVAL(&now);
2957 if ((old->tv_sec > now.tv_sec) ||
2958 ((old->tv_sec == now.tv_sec) && (old->tv_usec > now.tv_usec))) {
2959 /* The starting point is in the future. */
2962 timevalsub(&now, old);
2963 rtt_us = (uint64_t)1000000 * (uint64_t)now.tv_sec + (uint64_t)now.tv_usec;
2964 if (rtt_us > SCTP_RTO_UPPER_BOUND * 1000) {
2965 /* The RTT is larger than a sane value. */
2968 /* store the current RTT in us */
2970 /* compute rtt in ms */
2971 rtt = (int32_t)(net->rtt / 1000);
2972 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2974 * Tell the CC module that a new update has just occurred
2977 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2980 * Do we need to determine the lan? We do this only on sacks i.e.
2981 * RTT being determined from data not non-data (HB/INIT->INITACK).
2983 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2984 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2985 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2986 net->lan_type = SCTP_LAN_INTERNET;
2988 net->lan_type = SCTP_LAN_LOCAL;
2992 /***************************/
2993 /* 2. update RTTVAR & SRTT */
2994 /***************************/
2996 * Compute the scaled average lastsa and the
2997 * scaled variance lastsv as described in van Jacobson
2998 * Paper "Congestion Avoidance and Control", Annex A.
3000 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
3001 * (net->lastsv >> SCTP_RTT_VAR_SHIFT) is the rttvar
3003 if (net->RTO_measured) {
3004 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
3009 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
3011 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
3012 rto_logging(net, SCTP_LOG_RTTVAR);
3015 /* First RTO measurment */
3016 net->RTO_measured = 1;
3018 net->lastsa = rtt << SCTP_RTT_SHIFT;
3019 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
3020 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
3021 rto_logging(net, SCTP_LOG_INITIAL_RTT);
3024 if (net->lastsv == 0) {
3025 net->lastsv = SCTP_CLOCK_GRANULARITY;
3027 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
3028 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
3029 (stcb->asoc.sat_network_lockout == 0)) {
3030 stcb->asoc.sat_network = 1;
3031 } else if ((!first_measure) && stcb->asoc.sat_network) {
3032 stcb->asoc.sat_network = 0;
3033 stcb->asoc.sat_network_lockout = 1;
3035 /* bound it, per C6/C7 in Section 5.3.1 */
3036 if (new_rto < stcb->asoc.minrto) {
3037 new_rto = stcb->asoc.minrto;
3039 if (new_rto > stcb->asoc.maxrto) {
3040 new_rto = stcb->asoc.maxrto;
3047 * return a pointer to a contiguous piece of data from the given mbuf chain
3048 * starting at 'off' for 'len' bytes. If the desired piece spans more than
3049 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
3050 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
3053 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t *in_ptr)
3059 if ((off < 0) || (len <= 0))
3062 /* find the desired start location */
3063 while ((m != NULL) && (off > 0)) {
3064 if (off < SCTP_BUF_LEN(m))
3066 off -= SCTP_BUF_LEN(m);
3067 m = SCTP_BUF_NEXT(m);
3072 /* is the current mbuf large enough (eg. contiguous)? */
3073 if ((SCTP_BUF_LEN(m) - off) >= len) {
3074 return (mtod(m, caddr_t)+off);
3076 /* else, it spans more than one mbuf, so save a temp copy... */
3077 while ((m != NULL) && (len > 0)) {
3078 count = min(SCTP_BUF_LEN(m) - off, len);
3079 memcpy(ptr, mtod(m, caddr_t)+off, count);
3083 m = SCTP_BUF_NEXT(m);
3085 if ((m == NULL) && (len > 0))
3088 return ((caddr_t)in_ptr);
3094 struct sctp_paramhdr *
3095 sctp_get_next_param(struct mbuf *m,
3097 struct sctp_paramhdr *pull,
3100 /* This just provides a typed signature to Peter's Pull routine */
3101 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
3107 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
3109 struct mbuf *m_last;
3115 if (padlen <= M_TRAILINGSPACE(m)) {
3117 * The easy way. We hope the majority of the time we hit
3122 /* Hard way we must grow the mbuf chain */
3123 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
3124 if (m_last == NULL) {
3127 SCTP_BUF_LEN(m_last) = 0;
3128 SCTP_BUF_NEXT(m_last) = NULL;
3129 SCTP_BUF_NEXT(m) = m_last;
3131 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
3132 SCTP_BUF_LEN(m_last) += padlen;
3133 memset(dp, 0, padlen);
3138 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
3140 /* find the last mbuf in chain and pad it */
3143 if (last_mbuf != NULL) {
3144 return (sctp_add_pad_tombuf(last_mbuf, padval));
3146 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
3147 if (SCTP_BUF_NEXT(m_at) == NULL) {
3148 return (sctp_add_pad_tombuf(m_at, padval));
3156 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
3157 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked)
3159 struct mbuf *m_notify;
3160 struct sctp_assoc_change *sac;
3161 struct sctp_queued_to_read *control;
3162 unsigned int notif_len;
3169 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
3170 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
3171 if (abort != NULL) {
3172 abort_len = ntohs(abort->ch.chunk_length);
3174 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
3177 if (abort_len > SCTP_CHUNK_BUFFER_SIZE) {
3178 abort_len = SCTP_CHUNK_BUFFER_SIZE;
3183 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
3184 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
3185 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
3186 notif_len += abort_len;
3188 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3189 if (m_notify == NULL) {
3190 /* Retry with smaller value. */
3191 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
3192 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3193 if (m_notify == NULL) {
3197 SCTP_BUF_NEXT(m_notify) = NULL;
3198 sac = mtod(m_notify, struct sctp_assoc_change *);
3199 memset(sac, 0, notif_len);
3200 sac->sac_type = SCTP_ASSOC_CHANGE;
3202 sac->sac_length = sizeof(struct sctp_assoc_change);
3203 sac->sac_state = state;
3204 sac->sac_error = error;
3205 /* XXX verify these stream counts */
3206 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
3207 sac->sac_inbound_streams = stcb->asoc.streamincnt;
3208 sac->sac_assoc_id = sctp_get_associd(stcb);
3209 if (notif_len > sizeof(struct sctp_assoc_change)) {
3210 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
3212 if (stcb->asoc.prsctp_supported == 1) {
3213 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
3215 if (stcb->asoc.auth_supported == 1) {
3216 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
3218 if (stcb->asoc.asconf_supported == 1) {
3219 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
3221 if (stcb->asoc.idata_supported == 1) {
3222 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
3224 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
3225 if (stcb->asoc.reconfig_supported == 1) {
3226 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
3228 sac->sac_length += i;
3229 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
3230 memcpy(sac->sac_info, abort, abort_len);
3231 sac->sac_length += abort_len;
3234 SCTP_BUF_LEN(m_notify) = sac->sac_length;
3235 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3236 0, 0, stcb->asoc.context, 0, 0, 0,
3238 if (control != NULL) {
3239 control->length = SCTP_BUF_LEN(m_notify);
3240 control->spec_flags = M_NOTIFICATION;
3241 /* not that we need this */
3242 control->tail_mbuf = m_notify;
3243 sctp_add_to_readq(stcb->sctp_ep, stcb,
3245 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
3248 sctp_m_freem(m_notify);
3252 * For 1-to-1 style sockets, we send up and error when an ABORT
3256 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3257 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
3258 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
3259 SOCK_LOCK(stcb->sctp_socket);
3261 if (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) {
3262 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
3263 stcb->sctp_socket->so_error = ECONNREFUSED;
3265 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
3266 stcb->sctp_socket->so_error = ECONNRESET;
3269 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
3270 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
3271 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
3272 stcb->sctp_socket->so_error = ETIMEDOUT;
3274 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
3275 stcb->sctp_socket->so_error = ECONNABORTED;
3278 SOCK_UNLOCK(stcb->sctp_socket);
3280 /* Wake ANY sleepers */
3281 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3282 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
3283 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
3284 socantrcvmore(stcb->sctp_socket);
3286 sorwakeup(stcb->sctp_socket);
3287 sowwakeup(stcb->sctp_socket);
3291 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
3292 struct sockaddr *sa, uint32_t error, int so_locked)
3294 struct mbuf *m_notify;
3295 struct sctp_paddr_change *spc;
3296 struct sctp_queued_to_read *control;
3298 if ((stcb == NULL) ||
3299 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
3300 /* event not enabled */
3303 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
3304 if (m_notify == NULL)
3306 SCTP_BUF_LEN(m_notify) = 0;
3307 spc = mtod(m_notify, struct sctp_paddr_change *);
3308 memset(spc, 0, sizeof(struct sctp_paddr_change));
3309 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
3311 spc->spc_length = sizeof(struct sctp_paddr_change);
3312 switch (sa->sa_family) {
3316 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
3317 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
3318 (struct sockaddr_in6 *)&spc->spc_aaddr);
3320 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
3323 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
3330 struct sockaddr_in6 *sin6;
3332 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
3334 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
3335 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
3336 if (sin6->sin6_scope_id == 0) {
3337 /* recover scope_id for user */
3338 (void)sa6_recoverscope(sin6);
3340 /* clear embedded scope_id for user */
3341 in6_clearscope(&sin6->sin6_addr);
3351 spc->spc_state = state;
3352 spc->spc_error = error;
3353 spc->spc_assoc_id = sctp_get_associd(stcb);
3355 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
3356 SCTP_BUF_NEXT(m_notify) = NULL;
3358 /* append to socket */
3359 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3360 0, 0, stcb->asoc.context, 0, 0, 0,
3362 if (control == NULL) {
3364 sctp_m_freem(m_notify);
3367 control->length = SCTP_BUF_LEN(m_notify);
3368 control->spec_flags = M_NOTIFICATION;
3369 /* not that we need this */
3370 control->tail_mbuf = m_notify;
3371 sctp_add_to_readq(stcb->sctp_ep, stcb,
3373 &stcb->sctp_socket->so_rcv, 1,
3374 SCTP_READ_LOCK_NOT_HELD,
3380 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
3381 struct sctp_tmit_chunk *chk, int so_locked)
3383 struct mbuf *m_notify;
3384 struct sctp_send_failed *ssf;
3385 struct sctp_send_failed_event *ssfe;
3386 struct sctp_queued_to_read *control;
3387 struct sctp_chunkhdr *chkhdr;
3388 int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len;
3390 if ((stcb == NULL) ||
3391 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3392 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3393 /* event not enabled */
3397 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3398 notifhdr_len = sizeof(struct sctp_send_failed_event);
3400 notifhdr_len = sizeof(struct sctp_send_failed);
3402 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3403 if (m_notify == NULL)
3406 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3407 if (stcb->asoc.idata_supported) {
3408 chkhdr_len = sizeof(struct sctp_idata_chunk);
3410 chkhdr_len = sizeof(struct sctp_data_chunk);
3412 /* Use some defaults in case we can't access the chunk header */
3413 if (chk->send_size >= chkhdr_len) {
3414 payload_len = chk->send_size - chkhdr_len;
3419 if (chk->data != NULL) {
3420 chkhdr = mtod(chk->data, struct sctp_chunkhdr *);
3421 if (chkhdr != NULL) {
3422 chk_len = ntohs(chkhdr->chunk_length);
3423 if ((chk_len >= chkhdr_len) &&
3424 (chk->send_size >= chk_len) &&
3425 (chk->send_size - chk_len < 4)) {
3426 padding_len = chk->send_size - chk_len;
3427 payload_len = chk->send_size - chkhdr_len - padding_len;
3431 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3432 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3433 memset(ssfe, 0, notifhdr_len);
3434 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3436 ssfe->ssfe_flags = SCTP_DATA_SENT;
3438 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3440 ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len);
3441 ssfe->ssfe_error = error;
3442 /* not exactly what the user sent in, but should be close :) */
3443 ssfe->ssfe_info.snd_sid = chk->rec.data.sid;
3444 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
3445 ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid;
3446 ssfe->ssfe_info.snd_context = chk->rec.data.context;
3447 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3448 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3450 ssf = mtod(m_notify, struct sctp_send_failed *);
3451 memset(ssf, 0, notifhdr_len);
3452 ssf->ssf_type = SCTP_SEND_FAILED;
3454 ssf->ssf_flags = SCTP_DATA_SENT;
3456 ssf->ssf_flags = SCTP_DATA_UNSENT;
3458 ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len);
3459 ssf->ssf_error = error;
3460 /* not exactly what the user sent in, but should be close :) */
3461 ssf->ssf_info.sinfo_stream = chk->rec.data.sid;
3462 ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid;
3463 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
3464 ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid;
3465 ssf->ssf_info.sinfo_context = chk->rec.data.context;
3466 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3467 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3469 if (chk->data != NULL) {
3470 /* Trim off the sctp chunk header (it should be there) */
3471 if (chk->send_size == chkhdr_len + payload_len + padding_len) {
3472 m_adj(chk->data, chkhdr_len);
3473 m_adj(chk->data, -padding_len);
3474 sctp_mbuf_crush(chk->data);
3475 chk->send_size -= (chkhdr_len + padding_len);
3478 SCTP_BUF_NEXT(m_notify) = chk->data;
3479 /* Steal off the mbuf */
3482 * For this case, we check the actual socket buffer, since the assoc
3483 * is going away we don't want to overfill the socket buffer for a
3486 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3487 sctp_m_freem(m_notify);
3490 /* append to socket */
3491 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3492 0, 0, stcb->asoc.context, 0, 0, 0,
3494 if (control == NULL) {
3496 sctp_m_freem(m_notify);
3499 control->length = SCTP_BUF_LEN(m_notify);
3500 control->spec_flags = M_NOTIFICATION;
3501 /* not that we need this */
3502 control->tail_mbuf = m_notify;
3503 sctp_add_to_readq(stcb->sctp_ep, stcb,
3505 &stcb->sctp_socket->so_rcv, 1,
3506 SCTP_READ_LOCK_NOT_HELD,
3512 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3513 struct sctp_stream_queue_pending *sp, int so_locked)
3515 struct mbuf *m_notify;
3516 struct sctp_send_failed *ssf;
3517 struct sctp_send_failed_event *ssfe;
3518 struct sctp_queued_to_read *control;
3521 if ((stcb == NULL) ||
3522 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3523 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3524 /* event not enabled */
3527 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3528 notifhdr_len = sizeof(struct sctp_send_failed_event);
3530 notifhdr_len = sizeof(struct sctp_send_failed);
3532 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3533 if (m_notify == NULL) {
3537 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3538 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3539 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3540 memset(ssfe, 0, notifhdr_len);
3541 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3542 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3543 ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length);
3544 ssfe->ssfe_error = error;
3545 /* not exactly what the user sent in, but should be close :) */
3546 ssfe->ssfe_info.snd_sid = sp->sid;
3547 if (sp->some_taken) {
3548 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3550 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3552 ssfe->ssfe_info.snd_ppid = sp->ppid;
3553 ssfe->ssfe_info.snd_context = sp->context;
3554 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3555 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3557 ssf = mtod(m_notify, struct sctp_send_failed *);
3558 memset(ssf, 0, notifhdr_len);
3559 ssf->ssf_type = SCTP_SEND_FAILED;
3560 ssf->ssf_flags = SCTP_DATA_UNSENT;
3561 ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length);
3562 ssf->ssf_error = error;
3563 /* not exactly what the user sent in, but should be close :) */
3564 ssf->ssf_info.sinfo_stream = sp->sid;
3565 ssf->ssf_info.sinfo_ssn = 0;
3566 if (sp->some_taken) {
3567 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3569 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3571 ssf->ssf_info.sinfo_ppid = sp->ppid;
3572 ssf->ssf_info.sinfo_context = sp->context;
3573 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3574 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3576 SCTP_BUF_NEXT(m_notify) = sp->data;
3578 /* Steal off the mbuf */
3581 * For this case, we check the actual socket buffer, since the assoc
3582 * is going away we don't want to overfill the socket buffer for a
3585 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3586 sctp_m_freem(m_notify);
3589 /* append to socket */
3590 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3591 0, 0, stcb->asoc.context, 0, 0, 0,
3593 if (control == NULL) {
3595 sctp_m_freem(m_notify);
3598 control->length = SCTP_BUF_LEN(m_notify);
3599 control->spec_flags = M_NOTIFICATION;
3600 /* not that we need this */
3601 control->tail_mbuf = m_notify;
3602 sctp_add_to_readq(stcb->sctp_ep, stcb,
3604 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3610 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3612 struct mbuf *m_notify;
3613 struct sctp_adaptation_event *sai;
3614 struct sctp_queued_to_read *control;
3616 if ((stcb == NULL) ||
3617 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3618 /* event not enabled */
3622 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3623 if (m_notify == NULL)
3626 SCTP_BUF_LEN(m_notify) = 0;
3627 sai = mtod(m_notify, struct sctp_adaptation_event *);
3628 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3629 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3631 sai->sai_length = sizeof(struct sctp_adaptation_event);
3632 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3633 sai->sai_assoc_id = sctp_get_associd(stcb);
3635 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3636 SCTP_BUF_NEXT(m_notify) = NULL;
3638 /* append to socket */
3639 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3640 0, 0, stcb->asoc.context, 0, 0, 0,
3642 if (control == NULL) {
3644 sctp_m_freem(m_notify);
3647 control->length = SCTP_BUF_LEN(m_notify);
3648 control->spec_flags = M_NOTIFICATION;
3649 /* not that we need this */
3650 control->tail_mbuf = m_notify;
3651 sctp_add_to_readq(stcb->sctp_ep, stcb,
3653 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3656 /* This always must be called with the read-queue LOCKED in the INP */
3658 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3659 uint32_t val, int so_locked)
3661 struct mbuf *m_notify;
3662 struct sctp_pdapi_event *pdapi;
3663 struct sctp_queued_to_read *control;
3666 if ((stcb == NULL) ||
3667 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3668 /* event not enabled */
3671 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3675 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3676 if (m_notify == NULL)
3679 SCTP_BUF_LEN(m_notify) = 0;
3680 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3681 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3682 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3683 pdapi->pdapi_flags = 0;
3684 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3685 pdapi->pdapi_indication = error;
3686 pdapi->pdapi_stream = (val >> 16);
3687 pdapi->pdapi_seq = (val & 0x0000ffff);
3688 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3690 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3691 SCTP_BUF_NEXT(m_notify) = NULL;
3692 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3693 0, 0, stcb->asoc.context, 0, 0, 0,
3695 if (control == NULL) {
3697 sctp_m_freem(m_notify);
3700 control->length = SCTP_BUF_LEN(m_notify);
3701 control->spec_flags = M_NOTIFICATION;
3702 /* not that we need this */
3703 control->tail_mbuf = m_notify;
3704 sb = &stcb->sctp_socket->so_rcv;
3705 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3706 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3708 sctp_sballoc(stcb, sb, m_notify);
3709 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3710 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3712 control->end_added = 1;
3713 if (stcb->asoc.control_pdapi)
3714 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3716 /* we really should not see this case */
3717 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3719 if (stcb->sctp_ep && stcb->sctp_socket) {
3720 /* This should always be the case */
3721 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3726 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3728 struct mbuf *m_notify;
3729 struct sctp_shutdown_event *sse;
3730 struct sctp_queued_to_read *control;
3733 * For TCP model AND UDP connected sockets we will send an error up
3734 * when an SHUTDOWN completes
3736 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3737 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3738 /* mark socket closed for read/write and wakeup! */
3739 socantsendmore(stcb->sctp_socket);
3741 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3742 /* event not enabled */
3746 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3747 if (m_notify == NULL)
3750 sse = mtod(m_notify, struct sctp_shutdown_event *);
3751 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3752 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3754 sse->sse_length = sizeof(struct sctp_shutdown_event);
3755 sse->sse_assoc_id = sctp_get_associd(stcb);
3757 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3758 SCTP_BUF_NEXT(m_notify) = NULL;
3760 /* append to socket */
3761 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3762 0, 0, stcb->asoc.context, 0, 0, 0,
3764 if (control == NULL) {
3766 sctp_m_freem(m_notify);
3769 control->length = SCTP_BUF_LEN(m_notify);
3770 control->spec_flags = M_NOTIFICATION;
3771 /* not that we need this */
3772 control->tail_mbuf = m_notify;
3773 sctp_add_to_readq(stcb->sctp_ep, stcb,
3775 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3779 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3782 struct mbuf *m_notify;
3783 struct sctp_sender_dry_event *event;
3784 struct sctp_queued_to_read *control;
3786 if ((stcb == NULL) ||
3787 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3788 /* event not enabled */
3792 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3793 if (m_notify == NULL) {
3797 SCTP_BUF_LEN(m_notify) = 0;
3798 event = mtod(m_notify, struct sctp_sender_dry_event *);
3799 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3800 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3801 event->sender_dry_flags = 0;
3802 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3803 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3805 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3806 SCTP_BUF_NEXT(m_notify) = NULL;
3808 /* append to socket */
3809 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3810 0, 0, stcb->asoc.context, 0, 0, 0,
3812 if (control == NULL) {
3814 sctp_m_freem(m_notify);
3817 control->length = SCTP_BUF_LEN(m_notify);
3818 control->spec_flags = M_NOTIFICATION;
3819 /* not that we need this */
3820 control->tail_mbuf = m_notify;
3821 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3822 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3827 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3829 struct mbuf *m_notify;
3830 struct sctp_queued_to_read *control;
3831 struct sctp_stream_change_event *stradd;
3833 if ((stcb == NULL) ||
3834 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3835 /* event not enabled */
3838 if ((stcb->asoc.peer_req_out) && flag) {
3839 /* Peer made the request, don't tell the local user */
3840 stcb->asoc.peer_req_out = 0;
3843 stcb->asoc.peer_req_out = 0;
3844 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3845 if (m_notify == NULL)
3848 SCTP_BUF_LEN(m_notify) = 0;
3849 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3850 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3851 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3852 stradd->strchange_flags = flag;
3853 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3854 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3855 stradd->strchange_instrms = numberin;
3856 stradd->strchange_outstrms = numberout;
3857 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3858 SCTP_BUF_NEXT(m_notify) = NULL;
3859 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3861 sctp_m_freem(m_notify);
3864 /* append to socket */
3865 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3866 0, 0, stcb->asoc.context, 0, 0, 0,
3868 if (control == NULL) {
3870 sctp_m_freem(m_notify);
3873 control->length = SCTP_BUF_LEN(m_notify);
3874 control->spec_flags = M_NOTIFICATION;
3875 /* not that we need this */
3876 control->tail_mbuf = m_notify;
3877 sctp_add_to_readq(stcb->sctp_ep, stcb,
3879 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3883 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3885 struct mbuf *m_notify;
3886 struct sctp_queued_to_read *control;
3887 struct sctp_assoc_reset_event *strasoc;
3889 if ((stcb == NULL) ||
3890 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3891 /* event not enabled */
3894 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3895 if (m_notify == NULL)
3898 SCTP_BUF_LEN(m_notify) = 0;
3899 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3900 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3901 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3902 strasoc->assocreset_flags = flag;
3903 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3904 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3905 strasoc->assocreset_local_tsn = sending_tsn;
3906 strasoc->assocreset_remote_tsn = recv_tsn;
3907 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3908 SCTP_BUF_NEXT(m_notify) = NULL;
3909 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3911 sctp_m_freem(m_notify);
3914 /* append to socket */
3915 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3916 0, 0, stcb->asoc.context, 0, 0, 0,
3918 if (control == NULL) {
3920 sctp_m_freem(m_notify);
3923 control->length = SCTP_BUF_LEN(m_notify);
3924 control->spec_flags = M_NOTIFICATION;
3925 /* not that we need this */
3926 control->tail_mbuf = m_notify;
3927 sctp_add_to_readq(stcb->sctp_ep, stcb,
3929 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3935 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3936 int number_entries, uint16_t *list, int flag)
3938 struct mbuf *m_notify;
3939 struct sctp_queued_to_read *control;
3940 struct sctp_stream_reset_event *strreset;
3943 if ((stcb == NULL) ||
3944 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3945 /* event not enabled */
3949 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3950 if (m_notify == NULL)
3953 SCTP_BUF_LEN(m_notify) = 0;
3954 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3955 if (len > M_TRAILINGSPACE(m_notify)) {
3956 /* never enough room */
3957 sctp_m_freem(m_notify);
3960 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3961 memset(strreset, 0, len);
3962 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3963 strreset->strreset_flags = flag;
3964 strreset->strreset_length = len;
3965 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3966 if (number_entries) {
3969 for (i = 0; i < number_entries; i++) {
3970 strreset->strreset_stream_list[i] = ntohs(list[i]);
3973 SCTP_BUF_LEN(m_notify) = len;
3974 SCTP_BUF_NEXT(m_notify) = NULL;
3975 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3977 sctp_m_freem(m_notify);
3980 /* append to socket */
3981 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3982 0, 0, stcb->asoc.context, 0, 0, 0,
3984 if (control == NULL) {
3986 sctp_m_freem(m_notify);
3989 control->length = SCTP_BUF_LEN(m_notify);
3990 control->spec_flags = M_NOTIFICATION;
3991 /* not that we need this */
3992 control->tail_mbuf = m_notify;
3993 sctp_add_to_readq(stcb->sctp_ep, stcb,
3995 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
4000 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
4002 struct mbuf *m_notify;
4003 struct sctp_remote_error *sre;
4004 struct sctp_queued_to_read *control;
4005 unsigned int notif_len;
4008 if ((stcb == NULL) ||
4009 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
4012 if (chunk != NULL) {
4013 chunk_len = ntohs(chunk->ch.chunk_length);
4015 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
4018 if (chunk_len > SCTP_CHUNK_BUFFER_SIZE) {
4019 chunk_len = SCTP_CHUNK_BUFFER_SIZE;
4024 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
4025 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
4026 if (m_notify == NULL) {
4027 /* Retry with smaller value. */
4028 notif_len = (unsigned int)sizeof(struct sctp_remote_error);
4029 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
4030 if (m_notify == NULL) {
4034 SCTP_BUF_NEXT(m_notify) = NULL;
4035 sre = mtod(m_notify, struct sctp_remote_error *);
4036 memset(sre, 0, notif_len);
4037 sre->sre_type = SCTP_REMOTE_ERROR;
4039 sre->sre_length = sizeof(struct sctp_remote_error);
4040 sre->sre_error = error;
4041 sre->sre_assoc_id = sctp_get_associd(stcb);
4042 if (notif_len > sizeof(struct sctp_remote_error)) {
4043 memcpy(sre->sre_data, chunk, chunk_len);
4044 sre->sre_length += chunk_len;
4046 SCTP_BUF_LEN(m_notify) = sre->sre_length;
4047 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
4048 0, 0, stcb->asoc.context, 0, 0, 0,
4050 if (control != NULL) {
4051 control->length = SCTP_BUF_LEN(m_notify);
4052 control->spec_flags = M_NOTIFICATION;
4053 /* not that we need this */
4054 control->tail_mbuf = m_notify;
4055 sctp_add_to_readq(stcb->sctp_ep, stcb,
4057 &stcb->sctp_socket->so_rcv, 1,
4058 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
4060 sctp_m_freem(m_notify);
4066 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
4067 uint32_t error, void *data, int so_locked)
4069 if ((stcb == NULL) ||
4070 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4071 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4072 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
4073 /* If the socket is gone we are out of here */
4076 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
4079 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4080 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4081 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
4082 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
4083 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
4084 /* Don't report these in front states */
4088 switch (notification) {
4089 case SCTP_NOTIFY_ASSOC_UP:
4090 if (stcb->asoc.assoc_up_sent == 0) {
4091 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
4092 stcb->asoc.assoc_up_sent = 1;
4094 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
4095 sctp_notify_adaptation_layer(stcb);
4097 if (stcb->asoc.auth_supported == 0) {
4098 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
4102 case SCTP_NOTIFY_ASSOC_DOWN:
4103 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
4105 case SCTP_NOTIFY_INTERFACE_DOWN:
4107 struct sctp_nets *net;
4109 net = (struct sctp_nets *)data;
4110 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
4111 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4114 case SCTP_NOTIFY_INTERFACE_UP:
4116 struct sctp_nets *net;
4118 net = (struct sctp_nets *)data;
4119 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
4120 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4123 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
4125 struct sctp_nets *net;
4127 net = (struct sctp_nets *)data;
4128 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
4129 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
4132 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
4133 sctp_notify_send_failed2(stcb, error,
4134 (struct sctp_stream_queue_pending *)data, so_locked);
4136 case SCTP_NOTIFY_SENT_DG_FAIL:
4137 sctp_notify_send_failed(stcb, 1, error,
4138 (struct sctp_tmit_chunk *)data, so_locked);
4140 case SCTP_NOTIFY_UNSENT_DG_FAIL:
4141 sctp_notify_send_failed(stcb, 0, error,
4142 (struct sctp_tmit_chunk *)data, so_locked);
4144 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
4148 val = *((uint32_t *)data);
4150 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
4153 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
4154 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4155 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4156 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
4158 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
4161 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
4162 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_WAIT) ||
4163 (SCTP_GET_STATE(stcb) == SCTP_STATE_COOKIE_ECHOED)) {
4164 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
4166 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
4169 case SCTP_NOTIFY_ASSOC_RESTART:
4170 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
4171 if (stcb->asoc.auth_supported == 0) {
4172 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
4176 case SCTP_NOTIFY_STR_RESET_SEND:
4177 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_OUTGOING_SSN);
4179 case SCTP_NOTIFY_STR_RESET_RECV:
4180 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_INCOMING);
4182 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
4183 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4184 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
4186 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
4187 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4188 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
4190 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
4191 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4192 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
4194 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
4195 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
4196 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
4198 case SCTP_NOTIFY_ASCONF_ADD_IP:
4199 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
4202 case SCTP_NOTIFY_ASCONF_DELETE_IP:
4203 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
4206 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
4207 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
4210 case SCTP_NOTIFY_PEER_SHUTDOWN:
4211 sctp_notify_shutdown_event(stcb);
4213 case SCTP_NOTIFY_AUTH_NEW_KEY:
4214 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
4215 (uint16_t)(uintptr_t)data,
4218 case SCTP_NOTIFY_AUTH_FREE_KEY:
4219 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
4220 (uint16_t)(uintptr_t)data,
4223 case SCTP_NOTIFY_NO_PEER_AUTH:
4224 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
4225 (uint16_t)(uintptr_t)data,
4228 case SCTP_NOTIFY_SENDER_DRY:
4229 sctp_notify_sender_dry_event(stcb, so_locked);
4231 case SCTP_NOTIFY_REMOTE_ERROR:
4232 sctp_notify_remote_error(stcb, error, data);
4235 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
4236 __func__, notification, notification);
4242 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked)
4244 struct sctp_association *asoc;
4245 struct sctp_stream_out *outs;
4246 struct sctp_tmit_chunk *chk, *nchk;
4247 struct sctp_stream_queue_pending *sp, *nsp;
4254 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
4255 /* already being freed */
4258 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4259 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4260 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
4263 /* now through all the gunk freeing chunks */
4264 if (holds_lock == 0) {
4265 SCTP_TCB_SEND_LOCK(stcb);
4267 /* sent queue SHOULD be empty */
4268 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
4269 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
4270 asoc->sent_queue_cnt--;
4271 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
4272 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
4273 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
4276 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
4280 if (chk->data != NULL) {
4281 sctp_free_bufspace(stcb, asoc, chk, 1);
4282 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
4283 error, chk, so_locked);
4285 sctp_m_freem(chk->data);
4289 sctp_free_a_chunk(stcb, chk, so_locked);
4290 /* sa_ignore FREED_MEMORY */
4292 /* pending send queue SHOULD be empty */
4293 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
4294 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
4295 asoc->send_queue_cnt--;
4296 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
4297 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
4300 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
4303 if (chk->data != NULL) {
4304 sctp_free_bufspace(stcb, asoc, chk, 1);
4305 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
4306 error, chk, so_locked);
4308 sctp_m_freem(chk->data);
4312 sctp_free_a_chunk(stcb, chk, so_locked);
4313 /* sa_ignore FREED_MEMORY */
4315 for (i = 0; i < asoc->streamoutcnt; i++) {
4316 /* For each stream */
4317 outs = &asoc->strmout[i];
4318 /* clean up any sends there */
4319 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
4320 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
4321 TAILQ_REMOVE(&outs->outqueue, sp, next);
4322 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, 1);
4323 sctp_free_spbufspace(stcb, asoc, sp);
4325 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
4326 error, (void *)sp, so_locked);
4328 sctp_m_freem(sp->data);
4330 sp->tail_mbuf = NULL;
4335 sctp_free_remote_addr(sp->net);
4338 /* Free the chunk */
4339 sctp_free_a_strmoq(stcb, sp, so_locked);
4340 /* sa_ignore FREED_MEMORY */
4344 if (holds_lock == 0) {
4345 SCTP_TCB_SEND_UNLOCK(stcb);
4350 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
4351 struct sctp_abort_chunk *abort, int so_locked)
4356 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
4357 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
4358 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
4359 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
4361 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4362 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
4363 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
4366 /* Tell them we lost the asoc */
4367 sctp_report_all_outbound(stcb, error, 0, so_locked);
4369 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
4371 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
4376 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4377 struct mbuf *m, int iphlen,
4378 struct sockaddr *src, struct sockaddr *dst,
4379 struct sctphdr *sh, struct mbuf *op_err,
4380 uint8_t mflowtype, uint32_t mflowid,
4381 uint32_t vrf_id, uint16_t port)
4387 vtag = stcb->asoc.peer_vtag;
4388 vrf_id = stcb->asoc.vrf_id;
4390 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
4391 mflowtype, mflowid, inp->fibnum,
4394 /* We have a TCB to abort, send notification too */
4395 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
4396 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_WAS_ABORTED);
4397 /* Ok, now lets free it */
4398 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4399 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
4400 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4401 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4403 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4404 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
4407 #ifdef SCTP_ASOCLOG_OF_TSNS
4409 sctp_print_out_track_log(struct sctp_tcb *stcb)
4414 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
4415 SCTP_PRINTF("IN bound TSN log-aaa\n");
4416 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4417 SCTP_PRINTF("None rcvd\n");
4420 if (stcb->asoc.tsn_in_wrapped) {
4421 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4422 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4423 stcb->asoc.in_tsnlog[i].tsn,
4424 stcb->asoc.in_tsnlog[i].strm,
4425 stcb->asoc.in_tsnlog[i].seq,
4426 stcb->asoc.in_tsnlog[i].flgs,
4427 stcb->asoc.in_tsnlog[i].sz);
4430 if (stcb->asoc.tsn_in_at) {
4431 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4432 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4433 stcb->asoc.in_tsnlog[i].tsn,
4434 stcb->asoc.in_tsnlog[i].strm,
4435 stcb->asoc.in_tsnlog[i].seq,
4436 stcb->asoc.in_tsnlog[i].flgs,
4437 stcb->asoc.in_tsnlog[i].sz);
4441 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4442 if ((stcb->asoc.tsn_out_at == 0) &&
4443 (stcb->asoc.tsn_out_wrapped == 0)) {
4444 SCTP_PRINTF("None sent\n");
4446 if (stcb->asoc.tsn_out_wrapped) {
4447 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4448 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4449 stcb->asoc.out_tsnlog[i].tsn,
4450 stcb->asoc.out_tsnlog[i].strm,
4451 stcb->asoc.out_tsnlog[i].seq,
4452 stcb->asoc.out_tsnlog[i].flgs,
4453 stcb->asoc.out_tsnlog[i].sz);
4456 if (stcb->asoc.tsn_out_at) {
4457 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4458 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4459 stcb->asoc.out_tsnlog[i].tsn,
4460 stcb->asoc.out_tsnlog[i].strm,
4461 stcb->asoc.out_tsnlog[i].seq,
4462 stcb->asoc.out_tsnlog[i].flgs,
4463 stcb->asoc.out_tsnlog[i].sz);
4471 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4472 struct mbuf *op_err,
4477 /* Got to have a TCB */
4478 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4479 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4480 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4481 SCTP_CALLED_DIRECTLY_NOCMPSET);
4486 SCTP_ADD_SUBSTATE(stcb, SCTP_STATE_WAS_ABORTED);
4488 /* notify the peer */
4489 sctp_send_abort_tcb(stcb, op_err, so_locked);
4490 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4491 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_OPEN) ||
4492 (SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4493 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4495 /* notify the ulp */
4496 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4497 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4499 /* now free the asoc */
4500 #ifdef SCTP_ASOCLOG_OF_TSNS
4501 sctp_print_out_track_log(stcb);
4503 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4504 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4508 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4509 struct sockaddr *src, struct sockaddr *dst,
4510 struct sctphdr *sh, struct sctp_inpcb *inp,
4512 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4513 uint32_t vrf_id, uint16_t port)
4515 struct sctp_chunkhdr *ch, chunk_buf;
4516 unsigned int chk_length;
4517 int contains_init_chunk;
4519 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4520 /* Generate a TO address for future reference */
4521 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4522 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4523 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4524 SCTP_CALLED_DIRECTLY_NOCMPSET);
4527 contains_init_chunk = 0;
4528 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4529 sizeof(*ch), (uint8_t *)&chunk_buf);
4530 while (ch != NULL) {
4531 chk_length = ntohs(ch->chunk_length);
4532 if (chk_length < sizeof(*ch)) {
4533 /* break to abort land */
4536 switch (ch->chunk_type) {
4538 contains_init_chunk = 1;
4540 case SCTP_PACKET_DROPPED:
4541 /* we don't respond to pkt-dropped */
4543 case SCTP_ABORT_ASSOCIATION:
4544 /* we don't respond with an ABORT to an ABORT */
4546 case SCTP_SHUTDOWN_COMPLETE:
4548 * we ignore it since we are not waiting for it and
4552 case SCTP_SHUTDOWN_ACK:
4553 sctp_send_shutdown_complete2(src, dst, sh,
4554 mflowtype, mflowid, fibnum,
4560 offset += SCTP_SIZE32(chk_length);
4561 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4562 sizeof(*ch), (uint8_t *)&chunk_buf);
4564 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4565 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4566 (contains_init_chunk == 0))) {
4567 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4568 mflowtype, mflowid, fibnum,
4574 * check the inbound datagram to make sure there is not an abort inside it,
4575 * if there is return 1, else return 0.
4578 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtagfill)
4580 struct sctp_chunkhdr *ch;
4581 struct sctp_init_chunk *init_chk, chunk_buf;
4583 unsigned int chk_length;
4585 offset = iphlen + sizeof(struct sctphdr);
4586 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4587 (uint8_t *)&chunk_buf);
4588 while (ch != NULL) {
4589 chk_length = ntohs(ch->chunk_length);
4590 if (chk_length < sizeof(*ch)) {
4591 /* packet is probably corrupt */
4594 /* we seem to be ok, is it an abort? */
4595 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4596 /* yep, tell them */
4599 if (ch->chunk_type == SCTP_INITIATION) {
4600 /* need to update the Vtag */
4601 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4602 offset, sizeof(*init_chk), (uint8_t *)&chunk_buf);
4603 if (init_chk != NULL) {
4604 *vtagfill = ntohl(init_chk->init.initiate_tag);
4607 /* Nope, move to the next chunk */
4608 offset += SCTP_SIZE32(chk_length);
4609 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4610 sizeof(*ch), (uint8_t *)&chunk_buf);
4616 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4617 * set (i.e. it's 0) so, create this function to compare link local scopes
4621 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4623 struct sockaddr_in6 a, b;
4629 if (a.sin6_scope_id == 0)
4630 if (sa6_recoverscope(&a)) {
4631 /* can't get scope, so can't match */
4634 if (b.sin6_scope_id == 0)
4635 if (sa6_recoverscope(&b)) {
4636 /* can't get scope, so can't match */
4639 if (a.sin6_scope_id != b.sin6_scope_id)
4646 * returns a sockaddr_in6 with embedded scope recovered and removed
4648 struct sockaddr_in6 *
4649 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4651 /* check and strip embedded scope junk */
4652 if (addr->sin6_family == AF_INET6) {
4653 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4654 if (addr->sin6_scope_id == 0) {
4656 if (!sa6_recoverscope(store)) {
4657 /* use the recovered scope */
4661 /* else, return the original "to" addr */
4662 in6_clearscope(&addr->sin6_addr);
4671 * are the two addresses the same? currently a "scopeless" check returns: 1
4675 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4679 if (sa1 == NULL || sa2 == NULL)
4682 /* must be the same family */
4683 if (sa1->sa_family != sa2->sa_family)
4686 switch (sa1->sa_family) {
4690 /* IPv6 addresses */
4691 struct sockaddr_in6 *sin6_1, *sin6_2;
4693 sin6_1 = (struct sockaddr_in6 *)sa1;
4694 sin6_2 = (struct sockaddr_in6 *)sa2;
4695 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4702 /* IPv4 addresses */
4703 struct sockaddr_in *sin_1, *sin_2;
4705 sin_1 = (struct sockaddr_in *)sa1;
4706 sin_2 = (struct sockaddr_in *)sa2;
4707 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4711 /* we don't do these... */
4717 sctp_print_address(struct sockaddr *sa)
4720 char ip6buf[INET6_ADDRSTRLEN];
4723 switch (sa->sa_family) {
4727 struct sockaddr_in6 *sin6;
4729 sin6 = (struct sockaddr_in6 *)sa;
4730 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4731 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4732 ntohs(sin6->sin6_port),
4733 sin6->sin6_scope_id);
4740 struct sockaddr_in *sin;
4743 sin = (struct sockaddr_in *)sa;
4744 p = (unsigned char *)&sin->sin_addr;
4745 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4746 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4757 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4758 struct sctp_inpcb *new_inp,
4759 struct sctp_tcb *stcb,
4763 * go through our old INP and pull off any control structures that
4764 * belong to stcb and move then to the new inp.
4766 struct socket *old_so, *new_so;
4767 struct sctp_queued_to_read *control, *nctl;
4768 struct sctp_readhead tmp_queue;
4772 old_so = old_inp->sctp_socket;
4773 new_so = new_inp->sctp_socket;
4774 TAILQ_INIT(&tmp_queue);
4775 error = sblock(&old_so->so_rcv, waitflags);
4778 * Gak, can't get sblock, we have a problem. data will be
4779 * left stranded.. and we don't dare look at it since the
4780 * other thread may be reading something. Oh well, its a
4781 * screwed up app that does a peeloff OR a accept while
4782 * reading from the main socket... actually its only the
4783 * peeloff() case, since I think read will fail on a
4784 * listening socket..
4788 /* lock the socket buffers */
4789 SCTP_INP_READ_LOCK(old_inp);
4790 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4791 /* Pull off all for out target stcb */
4792 if (control->stcb == stcb) {
4793 /* remove it we want it */
4794 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4795 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4798 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4799 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4801 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4802 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4803 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4805 m = SCTP_BUF_NEXT(m);
4809 SCTP_INP_READ_UNLOCK(old_inp);
4810 /* Remove the sb-lock on the old socket */
4812 sbunlock(&old_so->so_rcv);
4813 /* Now we move them over to the new socket buffer */
4814 SCTP_INP_READ_LOCK(new_inp);
4815 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4816 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4819 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4820 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4822 sctp_sballoc(stcb, &new_so->so_rcv, m);
4823 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4824 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4826 m = SCTP_BUF_NEXT(m);
4829 SCTP_INP_READ_UNLOCK(new_inp);
4833 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
4834 struct sctp_tcb *stcb,
4839 if ((inp != NULL) && (inp->sctp_socket != NULL)) {
4840 sctp_sorwakeup(inp, inp->sctp_socket);
4845 sctp_add_to_readq(struct sctp_inpcb *inp,
4846 struct sctp_tcb *stcb,
4847 struct sctp_queued_to_read *control,
4850 int inp_read_lock_held,
4854 * Here we must place the control on the end of the socket read
4855 * queue AND increment sb_cc so that select will work properly on
4858 struct mbuf *m, *prev = NULL;
4863 panic("Gak, inp NULL on add_to_readq");
4867 if (inp_read_lock_held == 0)
4868 SCTP_INP_READ_LOCK(inp);
4869 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4870 if (!control->on_strm_q) {
4871 sctp_free_remote_addr(control->whoFrom);
4872 if (control->data) {
4873 sctp_m_freem(control->data);
4874 control->data = NULL;
4876 sctp_free_a_readq(stcb, control);
4878 if (inp_read_lock_held == 0)
4879 SCTP_INP_READ_UNLOCK(inp);
4882 if (!(control->spec_flags & M_NOTIFICATION)) {
4883 atomic_add_int(&inp->total_recvs, 1);
4884 if (!control->do_not_ref_stcb) {
4885 atomic_add_int(&stcb->total_recvs, 1);
4889 control->held_length = 0;
4890 control->length = 0;
4892 if (SCTP_BUF_LEN(m) == 0) {
4893 /* Skip mbufs with NO length */
4896 control->data = sctp_m_free(m);
4899 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4900 m = SCTP_BUF_NEXT(prev);
4903 control->tail_mbuf = prev;
4908 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4909 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4911 sctp_sballoc(stcb, sb, m);
4912 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4913 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4915 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4916 m = SCTP_BUF_NEXT(m);
4919 control->tail_mbuf = prev;
4921 /* Everything got collapsed out?? */
4922 if (!control->on_strm_q) {
4923 sctp_free_remote_addr(control->whoFrom);
4924 sctp_free_a_readq(stcb, control);
4926 if (inp_read_lock_held == 0)
4927 SCTP_INP_READ_UNLOCK(inp);
4931 control->end_added = 1;
4933 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4934 control->on_read_q = 1;
4935 if (inp_read_lock_held == 0)
4936 SCTP_INP_READ_UNLOCK(inp);
4937 if (inp && inp->sctp_socket) {
4938 sctp_wakeup_the_read_socket(inp, stcb, so_locked);
4942 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4943 *************ALTERNATE ROUTING CODE
4946 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4947 *************ALTERNATE ROUTING CODE
4951 sctp_generate_cause(uint16_t code, char *info)
4954 struct sctp_gen_error_cause *cause;
4958 if ((code == 0) || (info == NULL)) {
4961 info_len = strlen(info);
4962 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
4965 len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len);
4966 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4968 SCTP_BUF_LEN(m) = len;
4969 cause = mtod(m, struct sctp_gen_error_cause *);
4970 cause->code = htons(code);
4971 cause->length = htons(len);
4972 memcpy(cause->info, info, info_len);
4978 sctp_generate_no_user_data_cause(uint32_t tsn)
4981 struct sctp_error_no_user_data *no_user_data_cause;
4984 len = (uint16_t)sizeof(struct sctp_error_no_user_data);
4985 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4987 SCTP_BUF_LEN(m) = len;
4988 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4989 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4990 no_user_data_cause->cause.length = htons(len);
4991 no_user_data_cause->tsn = htonl(tsn);
4996 #ifdef SCTP_MBCNT_LOGGING
4998 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4999 struct sctp_tmit_chunk *tp1, int chk_cnt)
5001 if (tp1->data == NULL) {
5004 asoc->chunks_on_out_queue -= chk_cnt;
5005 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
5006 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
5007 asoc->total_output_queue_size,
5012 if (asoc->total_output_queue_size >= tp1->book_size) {
5013 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
5015 asoc->total_output_queue_size = 0;
5018 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
5019 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
5020 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
5021 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
5023 stcb->sctp_socket->so_snd.sb_cc = 0;
5032 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
5033 uint8_t sent, int so_locked)
5035 struct sctp_stream_out *strq;
5036 struct sctp_tmit_chunk *chk = NULL, *tp2;
5037 struct sctp_stream_queue_pending *sp;
5040 uint8_t foundeom = 0;
5043 int do_wakeup_routine = 0;
5045 sid = tp1->rec.data.sid;
5046 mid = tp1->rec.data.mid;
5047 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
5048 stcb->asoc.abandoned_sent[0]++;
5049 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
5050 stcb->asoc.strmout[sid].abandoned_sent[0]++;
5051 #if defined(SCTP_DETAILED_STR_STATS)
5052 stcb->asoc.strmout[sid].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
5055 stcb->asoc.abandoned_unsent[0]++;
5056 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
5057 stcb->asoc.strmout[sid].abandoned_unsent[0]++;
5058 #if defined(SCTP_DETAILED_STR_STATS)
5059 stcb->asoc.strmout[sid].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
5063 ret_sz += tp1->book_size;
5064 if (tp1->data != NULL) {
5065 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
5066 sctp_flight_size_decrease(tp1);
5067 sctp_total_flight_decrease(stcb, tp1);
5069 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
5070 stcb->asoc.peers_rwnd += tp1->send_size;
5071 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
5073 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
5075 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
5078 sctp_m_freem(tp1->data);
5081 do_wakeup_routine = 1;
5082 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
5083 stcb->asoc.sent_queue_cnt_removeable--;
5086 tp1->sent = SCTP_FORWARD_TSN_SKIP;
5087 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
5088 SCTP_DATA_NOT_FRAG) {
5089 /* not frag'ed we ae done */
5092 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
5093 /* end of frag, we are done */
5098 * Its a begin or middle piece, we must mark all of
5102 tp1 = TAILQ_NEXT(tp1, sctp_next);
5104 } while (tp1 && notdone);
5105 if (foundeom == 0) {
5107 * The multi-part message was scattered across the send and
5110 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
5111 if ((tp1->rec.data.sid != sid) ||
5112 (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) {
5116 * save to chk in case we have some on stream out
5117 * queue. If so and we have an un-transmitted one we
5118 * don't have to fudge the TSN.
5121 ret_sz += tp1->book_size;
5122 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
5124 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
5126 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
5129 sctp_m_freem(tp1->data);
5132 /* No flight involved here book the size to 0 */
5134 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
5137 do_wakeup_routine = 1;
5138 tp1->sent = SCTP_FORWARD_TSN_SKIP;
5139 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
5141 * on to the sent queue so we can wait for it to be
5144 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
5146 stcb->asoc.send_queue_cnt--;
5147 stcb->asoc.sent_queue_cnt++;
5150 if (foundeom == 0) {
5152 * Still no eom found. That means there is stuff left on the
5153 * stream out queue.. yuck.
5155 SCTP_TCB_SEND_LOCK(stcb);
5156 strq = &stcb->asoc.strmout[sid];
5157 sp = TAILQ_FIRST(&strq->outqueue);
5159 sp->discard_rest = 1;
5161 * We may need to put a chunk on the queue that
5162 * holds the TSN that would have been sent with the
5166 /* Yep, we have to */
5167 sctp_alloc_a_chunk(stcb, chk);
5170 * we are hosed. All we can do is
5171 * nothing.. which will cause an
5172 * abort if the peer is paying
5177 memset(chk, 0, sizeof(*chk));
5178 chk->rec.data.rcv_flags = 0;
5179 chk->sent = SCTP_FORWARD_TSN_SKIP;
5180 chk->asoc = &stcb->asoc;
5181 if (stcb->asoc.idata_supported == 0) {
5182 if (sp->sinfo_flags & SCTP_UNORDERED) {
5183 chk->rec.data.mid = 0;
5185 chk->rec.data.mid = strq->next_mid_ordered;
5188 if (sp->sinfo_flags & SCTP_UNORDERED) {
5189 chk->rec.data.mid = strq->next_mid_unordered;
5191 chk->rec.data.mid = strq->next_mid_ordered;
5194 chk->rec.data.sid = sp->sid;
5195 chk->rec.data.ppid = sp->ppid;
5196 chk->rec.data.context = sp->context;
5197 chk->flags = sp->act_flags;
5199 chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
5200 strq->chunks_on_queues++;
5201 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
5202 stcb->asoc.sent_queue_cnt++;
5203 stcb->asoc.pr_sctp_cnt++;
5205 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
5206 if (sp->sinfo_flags & SCTP_UNORDERED) {
5207 chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED;
5209 if (stcb->asoc.idata_supported == 0) {
5210 if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) {
5211 strq->next_mid_ordered++;
5214 if (sp->sinfo_flags & SCTP_UNORDERED) {
5215 strq->next_mid_unordered++;
5217 strq->next_mid_ordered++;
5223 * Pull any data to free up the SB and allow
5224 * sender to "add more" while we will throw
5227 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
5228 ret_sz += sp->length;
5229 do_wakeup_routine = 1;
5231 sctp_m_freem(sp->data);
5233 sp->tail_mbuf = NULL;
5237 SCTP_TCB_SEND_UNLOCK(stcb);
5239 if (do_wakeup_routine) {
5240 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
5246 * checks to see if the given address, sa, is one that is currently known by
5247 * the kernel note: can't distinguish the same address on multiple interfaces
5248 * and doesn't handle multiple addresses with different zone/scope id's note:
5249 * ifa_ifwithaddr() compares the entire sockaddr struct
5252 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
5255 struct sctp_laddr *laddr;
5257 if (holds_lock == 0) {
5258 SCTP_INP_RLOCK(inp);
5261 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5262 if (laddr->ifa == NULL)
5264 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
5267 if (addr->sa_family == AF_INET) {
5268 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5269 laddr->ifa->address.sin.sin_addr.s_addr) {
5276 if (addr->sa_family == AF_INET6) {
5277 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5278 &laddr->ifa->address.sin6)) {
5285 if (holds_lock == 0) {
5286 SCTP_INP_RUNLOCK(inp);
5288 if (laddr != NULL) {
5289 return (laddr->ifa);
5296 sctp_get_ifa_hash_val(struct sockaddr *addr)
5298 switch (addr->sa_family) {
5302 struct sockaddr_in *sin;
5304 sin = (struct sockaddr_in *)addr;
5305 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
5311 struct sockaddr_in6 *sin6;
5312 uint32_t hash_of_addr;
5314 sin6 = (struct sockaddr_in6 *)addr;
5315 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5316 sin6->sin6_addr.s6_addr32[1] +
5317 sin6->sin6_addr.s6_addr32[2] +
5318 sin6->sin6_addr.s6_addr32[3]);
5319 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5320 return (hash_of_addr);
5330 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5332 struct sctp_ifa *sctp_ifap;
5333 struct sctp_vrf *vrf;
5334 struct sctp_ifalist *hash_head;
5335 uint32_t hash_of_addr;
5337 if (holds_lock == 0) {
5338 SCTP_IPI_ADDR_RLOCK();
5340 SCTP_IPI_ADDR_LOCK_ASSERT();
5343 vrf = sctp_find_vrf(vrf_id);
5345 if (holds_lock == 0)
5346 SCTP_IPI_ADDR_RUNLOCK();
5350 hash_of_addr = sctp_get_ifa_hash_val(addr);
5352 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5353 if (hash_head == NULL) {
5354 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5355 hash_of_addr, (uint32_t)vrf->vrf_addr_hashmark,
5356 (uint32_t)(hash_of_addr & vrf->vrf_addr_hashmark));
5357 sctp_print_address(addr);
5358 SCTP_PRINTF("No such bucket for address\n");
5359 if (holds_lock == 0)
5360 SCTP_IPI_ADDR_RUNLOCK();
5364 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5365 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5368 if (addr->sa_family == AF_INET) {
5369 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5370 sctp_ifap->address.sin.sin_addr.s_addr) {
5377 if (addr->sa_family == AF_INET6) {
5378 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5379 &sctp_ifap->address.sin6)) {
5386 if (holds_lock == 0)
5387 SCTP_IPI_ADDR_RUNLOCK();
5392 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t *freed_so_far, int hold_rlock,
5395 /* User pulled some data, do we need a rwnd update? */
5396 struct epoch_tracker et;
5399 struct socket *so = NULL;
5404 atomic_add_int(&stcb->asoc.refcnt, 1);
5406 if ((SCTP_GET_STATE(stcb) == SCTP_STATE_SHUTDOWN_ACK_SENT) ||
5407 (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED | SCTP_STATE_SHUTDOWN_RECEIVED))) {
5408 /* Pre-check If we are freeing no update */
5411 SCTP_INP_INCR_REF(stcb->sctp_ep);
5412 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5413 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5416 so = stcb->sctp_socket;
5420 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5421 /* Have you have freed enough to look */
5423 /* Yep, its worth a look and the lock overhead */
5425 /* Figure out what the rwnd would be */
5426 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5427 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5428 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5432 if (dif >= rwnd_req) {
5434 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5437 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5439 * One last check before we allow the guy possibly
5440 * to get in. There is a race, where the guy has not
5441 * reached the gate. In that case
5445 SCTP_TCB_LOCK(stcb);
5446 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5447 /* No reports here */
5448 SCTP_TCB_UNLOCK(stcb);
5451 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5452 NET_EPOCH_ENTER(et);
5453 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5455 sctp_chunk_output(stcb->sctp_ep, stcb,
5456 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5457 /* make sure no timer is running */
5459 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5460 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5461 SCTP_TCB_UNLOCK(stcb);
5463 /* Update how much we have pending */
5464 stcb->freed_by_sorcv_sincelast = dif;
5467 if (so && r_unlocked && hold_rlock) {
5468 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5471 SCTP_INP_DECR_REF(stcb->sctp_ep);
5473 atomic_add_int(&stcb->asoc.refcnt, -1);
5478 sctp_sorecvmsg(struct socket *so,
5481 struct sockaddr *from,
5484 struct sctp_sndrcvinfo *sinfo,
5488 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5489 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5490 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5491 * On the way out we may send out any combination of:
5492 * MSG_NOTIFICATION MSG_EOR
5495 struct sctp_inpcb *inp = NULL;
5499 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5500 struct mbuf *m = NULL;
5501 struct sctp_tcb *stcb = NULL;
5502 int wakeup_read_socket = 0;
5503 int freecnt_applied = 0;
5504 int out_flags = 0, in_flags = 0;
5505 int block_allowed = 1;
5506 uint32_t freed_so_far = 0;
5507 ssize_t copied_so_far = 0;
5508 int in_eeor_mode = 0;
5509 int no_rcv_needed = 0;
5510 uint32_t rwnd_req = 0;
5511 int hold_sblock = 0;
5514 uint32_t held_length = 0;
5515 int sockbuf_lock = 0;
5518 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5523 in_flags = *msg_flags;
5524 if (in_flags & MSG_PEEK)
5525 SCTP_STAT_INCR(sctps_read_peeks);
5529 slen = uio->uio_resid;
5531 /* Pull in and set up our int flags */
5532 if (in_flags & MSG_OOB) {
5533 /* Out of band's NOT supported */
5534 return (EOPNOTSUPP);
5536 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5537 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5540 if ((in_flags & (MSG_DONTWAIT
5543 SCTP_SO_IS_NBIO(so)) {
5546 /* setup the endpoint */
5547 inp = (struct sctp_inpcb *)so->so_pcb;
5549 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5552 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5553 /* Must be at least a MTU's worth */
5554 if (rwnd_req < SCTP_MIN_RWND)
5555 rwnd_req = SCTP_MIN_RWND;
5556 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5557 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5558 sctp_misc_ints(SCTP_SORECV_ENTER,
5559 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5561 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5562 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5563 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5567 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5569 goto release_unlocked;
5575 if (hold_sblock == 0) {
5576 SOCKBUF_LOCK(&so->so_rcv);
5579 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5580 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5583 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5585 error = so->so_error;
5586 if ((in_flags & MSG_PEEK) == 0)
5590 if (so->so_rcv.sb_cc == 0) {
5597 if (so->so_rcv.sb_cc <= held_length) {
5599 error = so->so_error;
5600 if ((in_flags & MSG_PEEK) == 0) {
5605 if ((so->so_rcv.sb_cc == 0) &&
5606 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5607 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5608 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5610 * For active open side clear flags for
5611 * re-use passive open is blocked by
5614 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5616 * You were aborted, passive side
5619 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5622 so->so_state &= ~(SS_ISCONNECTING |
5623 SS_ISDISCONNECTING |
5627 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5628 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5635 if (block_allowed) {
5636 error = sbwait(&so->so_rcv);
5641 goto restart_nosblocks;
5643 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5644 error = EWOULDBLOCK;
5648 if (hold_sblock == 1) {
5649 SOCKBUF_UNLOCK(&so->so_rcv);
5652 /* we possibly have data we can read */
5653 /* sa_ignore FREED_MEMORY */
5654 control = TAILQ_FIRST(&inp->read_queue);
5655 if (control == NULL) {
5657 * This could be happening since the appender did the
5658 * increment but as not yet did the tailq insert onto the
5661 if (hold_rlock == 0) {
5662 SCTP_INP_READ_LOCK(inp);
5664 control = TAILQ_FIRST(&inp->read_queue);
5665 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5667 panic("Huh, its non zero and nothing on control?");
5669 so->so_rcv.sb_cc = 0;
5671 SCTP_INP_READ_UNLOCK(inp);
5676 if ((control->length == 0) &&
5677 (control->do_not_ref_stcb)) {
5679 * Clean up code for freeing assoc that left behind a
5680 * pdapi.. maybe a peer in EEOR that just closed after
5681 * sending and never indicated a EOR.
5683 if (hold_rlock == 0) {
5685 SCTP_INP_READ_LOCK(inp);
5687 control->held_length = 0;
5688 if (control->data) {
5689 /* Hmm there is data here .. fix */
5693 m_tmp = control->data;
5695 cnt += SCTP_BUF_LEN(m_tmp);
5696 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5697 control->tail_mbuf = m_tmp;
5698 control->end_added = 1;
5700 m_tmp = SCTP_BUF_NEXT(m_tmp);
5702 control->length = cnt;
5705 TAILQ_REMOVE(&inp->read_queue, control, next);
5706 /* Add back any hiddend data */
5707 sctp_free_remote_addr(control->whoFrom);
5708 sctp_free_a_readq(stcb, control);
5712 SCTP_INP_READ_UNLOCK(inp);
5716 if ((control->length == 0) &&
5717 (control->end_added == 1)) {
5719 * Do we also need to check for (control->pdapi_aborted ==
5722 if (hold_rlock == 0) {
5724 SCTP_INP_READ_LOCK(inp);
5726 TAILQ_REMOVE(&inp->read_queue, control, next);
5727 if (control->data) {
5729 panic("control->data not null but control->length == 0");
5731 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5732 sctp_m_freem(control->data);
5733 control->data = NULL;
5736 if (control->aux_data) {
5737 sctp_m_free(control->aux_data);
5738 control->aux_data = NULL;
5741 if (control->on_strm_q) {
5742 panic("About to free ctl:%p so:%p and its in %d",
5743 control, so, control->on_strm_q);
5746 sctp_free_remote_addr(control->whoFrom);
5747 sctp_free_a_readq(stcb, control);
5750 SCTP_INP_READ_UNLOCK(inp);
5754 if (control->length == 0) {
5755 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5757 /* find a more suitable one then this */
5758 ctl = TAILQ_NEXT(control, next);
5760 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5762 (ctl->spec_flags & M_NOTIFICATION) ||
5763 ((ctl->do_not_ref_stcb == 0) &&
5764 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5767 * If we have a different TCB next, and there is data
5768 * present. If we have already taken some (pdapi), OR we can
5769 * ref the tcb and no delivery as started on this stream, we
5770 * take it. Note we allow a notification on a different
5771 * assoc to be delivered..
5775 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5777 ((ctl->some_taken) ||
5778 ((ctl->do_not_ref_stcb == 0) &&
5779 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5780 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5782 * If we have the same tcb, and there is data present, and we
5783 * have the strm interleave feature present. Then if we have
5784 * taken some (pdapi) or we can refer to tht tcb AND we have
5785 * not started a delivery for this stream, we can take it.
5786 * Note we do NOT allow a notificaiton on the same assoc to
5792 ctl = TAILQ_NEXT(ctl, next);
5796 * if we reach here, not suitable replacement is available
5797 * <or> fragment interleave is NOT on. So stuff the sb_cc
5798 * into the our held count, and its time to sleep again.
5800 held_length = so->so_rcv.sb_cc;
5801 control->held_length = so->so_rcv.sb_cc;
5804 /* Clear the held length since there is something to read */
5805 control->held_length = 0;
5808 * If we reach here, control has a some data for us to read off.
5809 * Note that stcb COULD be NULL.
5811 if (hold_rlock == 0) {
5813 SCTP_INP_READ_LOCK(inp);
5815 control->some_taken++;
5816 stcb = control->stcb;
5818 if ((control->do_not_ref_stcb == 0) &&
5819 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5820 if (freecnt_applied == 0)
5822 } else if (control->do_not_ref_stcb == 0) {
5823 /* you can't free it on me please */
5825 * The lock on the socket buffer protects us so the
5826 * free code will stop. But since we used the
5827 * socketbuf lock and the sender uses the tcb_lock
5828 * to increment, we need to use the atomic add to
5831 if (freecnt_applied) {
5833 panic("refcnt already incremented");
5835 SCTP_PRINTF("refcnt already incremented?\n");
5838 atomic_add_int(&stcb->asoc.refcnt, 1);
5839 freecnt_applied = 1;
5842 * Setup to remember how much we have not yet told
5843 * the peer our rwnd has opened up. Note we grab the
5844 * value from the tcb from last time. Note too that
5845 * sack sending clears this when a sack is sent,
5846 * which is fine. Once we hit the rwnd_req, we then
5847 * will go to the sctp_user_rcvd() that will not
5848 * lock until it KNOWs it MUST send a WUP-SACK.
5850 freed_so_far = (uint32_t)stcb->freed_by_sorcv_sincelast;
5851 stcb->freed_by_sorcv_sincelast = 0;
5855 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5856 control->do_not_ref_stcb == 0) {
5857 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5860 /* First lets get off the sinfo and sockaddr info */
5861 if ((sinfo != NULL) && (filling_sinfo != 0)) {
5862 sinfo->sinfo_stream = control->sinfo_stream;
5863 sinfo->sinfo_ssn = (uint16_t)control->mid;
5864 sinfo->sinfo_flags = control->sinfo_flags;
5865 sinfo->sinfo_ppid = control->sinfo_ppid;
5866 sinfo->sinfo_context = control->sinfo_context;
5867 sinfo->sinfo_timetolive = control->sinfo_timetolive;
5868 sinfo->sinfo_tsn = control->sinfo_tsn;
5869 sinfo->sinfo_cumtsn = control->sinfo_cumtsn;
5870 sinfo->sinfo_assoc_id = control->sinfo_assoc_id;
5871 nxt = TAILQ_NEXT(control, next);
5872 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5873 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5874 struct sctp_extrcvinfo *s_extra;
5876 s_extra = (struct sctp_extrcvinfo *)sinfo;
5879 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5880 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5881 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5883 if (nxt->spec_flags & M_NOTIFICATION) {
5884 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5886 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5887 s_extra->serinfo_next_length = nxt->length;
5888 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5889 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5890 if (nxt->tail_mbuf != NULL) {
5891 if (nxt->end_added) {
5892 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5897 * we explicitly 0 this, since the memcpy
5898 * got some other things beyond the older
5899 * sinfo_ that is on the control's structure
5903 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5904 s_extra->serinfo_next_aid = 0;
5905 s_extra->serinfo_next_length = 0;
5906 s_extra->serinfo_next_ppid = 0;
5907 s_extra->serinfo_next_stream = 0;
5911 * update off the real current cum-ack, if we have an stcb.
5913 if ((control->do_not_ref_stcb == 0) && stcb)
5914 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5916 * mask off the high bits, we keep the actual chunk bits in
5919 sinfo->sinfo_flags &= 0x00ff;
5920 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5921 sinfo->sinfo_flags |= SCTP_UNORDERED;
5924 #ifdef SCTP_ASOCLOG_OF_TSNS
5926 int index, newindex;
5927 struct sctp_pcbtsn_rlog *entry;
5930 index = inp->readlog_index;
5931 newindex = index + 1;
5932 if (newindex >= SCTP_READ_LOG_SIZE) {
5935 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5936 entry = &inp->readlog[index];
5937 entry->vtag = control->sinfo_assoc_id;
5938 entry->strm = control->sinfo_stream;
5939 entry->seq = (uint16_t)control->mid;
5940 entry->sz = control->length;
5941 entry->flgs = control->sinfo_flags;
5944 if ((fromlen > 0) && (from != NULL)) {
5945 union sctp_sockstore store;
5948 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5951 len = sizeof(struct sockaddr_in6);
5952 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5953 store.sin6.sin6_port = control->port_from;
5959 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5960 len = sizeof(struct sockaddr_in6);
5961 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5963 store.sin6.sin6_port = control->port_from;
5965 len = sizeof(struct sockaddr_in);
5966 store.sin = control->whoFrom->ro._l_addr.sin;
5967 store.sin.sin_port = control->port_from;
5970 len = sizeof(struct sockaddr_in);
5971 store.sin = control->whoFrom->ro._l_addr.sin;
5972 store.sin.sin_port = control->port_from;
5980 memcpy(from, &store, min((size_t)fromlen, len));
5983 struct sockaddr_in6 lsa6, *from6;
5985 from6 = (struct sockaddr_in6 *)from;
5986 sctp_recover_scope_mac(from6, (&lsa6));
5991 SCTP_INP_READ_UNLOCK(inp);
5995 SOCKBUF_UNLOCK(&so->so_rcv);
5998 /* now copy out what data we can */
6000 /* copy out each mbuf in the chain up to length */
6004 /* Move out all we can */
6005 cp_len = uio->uio_resid;
6006 my_len = SCTP_BUF_LEN(m);
6007 if (cp_len > my_len) {
6008 /* not enough in this buf */
6012 SCTP_INP_READ_UNLOCK(inp);
6016 error = uiomove(mtod(m, char *), (int)cp_len, uio);
6018 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
6022 if ((control->do_not_ref_stcb == 0) && stcb &&
6023 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
6027 /* error we are out of here */
6030 SCTP_INP_READ_LOCK(inp);
6032 if (cp_len == SCTP_BUF_LEN(m)) {
6033 if ((SCTP_BUF_NEXT(m) == NULL) &&
6034 (control->end_added)) {
6035 out_flags |= MSG_EOR;
6036 if ((control->do_not_ref_stcb == 0) &&
6037 (control->stcb != NULL) &&
6038 ((control->spec_flags & M_NOTIFICATION) == 0))
6039 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6041 if (control->spec_flags & M_NOTIFICATION) {
6042 out_flags |= MSG_NOTIFICATION;
6044 /* we ate up the mbuf */
6045 if (in_flags & MSG_PEEK) {
6047 m = SCTP_BUF_NEXT(m);
6048 copied_so_far += cp_len;
6050 /* dispose of the mbuf */
6051 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6052 sctp_sblog(&so->so_rcv,
6053 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6055 sctp_sbfree(control, stcb, &so->so_rcv, m);
6056 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6057 sctp_sblog(&so->so_rcv,
6058 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6060 copied_so_far += cp_len;
6061 freed_so_far += (uint32_t)cp_len;
6062 freed_so_far += MSIZE;
6063 atomic_subtract_int(&control->length, cp_len);
6064 control->data = sctp_m_free(m);
6067 * been through it all, must hold sb
6068 * lock ok to null tail
6070 if (control->data == NULL) {
6072 if ((control->end_added == 0) ||
6073 (TAILQ_NEXT(control, next) == NULL)) {
6081 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
6082 panic("Hmm we don't own the lock?");
6086 control->tail_mbuf = NULL;
6088 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
6089 panic("end_added, nothing left and no MSG_EOR");
6095 /* Do we need to trim the mbuf? */
6096 if (control->spec_flags & M_NOTIFICATION) {
6097 out_flags |= MSG_NOTIFICATION;
6099 if ((in_flags & MSG_PEEK) == 0) {
6100 SCTP_BUF_RESV_UF(m, cp_len);
6101 SCTP_BUF_LEN(m) -= (int)cp_len;
6102 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6103 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, (int)cp_len);
6105 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
6106 if ((control->do_not_ref_stcb == 0) &&
6108 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
6110 copied_so_far += cp_len;
6111 freed_so_far += (uint32_t)cp_len;
6112 freed_so_far += MSIZE;
6113 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6114 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
6115 SCTP_LOG_SBRESULT, 0);
6117 atomic_subtract_int(&control->length, cp_len);
6119 copied_so_far += cp_len;
6122 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
6125 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
6126 (control->do_not_ref_stcb == 0) &&
6127 (freed_so_far >= rwnd_req)) {
6128 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6130 } /* end while(m) */
6132 * At this point we have looked at it all and we either have
6133 * a MSG_EOR/or read all the user wants... <OR>
6134 * control->length == 0.
6136 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
6137 /* we are done with this control */
6138 if (control->length == 0) {
6139 if (control->data) {
6141 panic("control->data not null at read eor?");
6143 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
6144 sctp_m_freem(control->data);
6145 control->data = NULL;
6149 if (hold_rlock == 0) {
6150 SCTP_INP_READ_LOCK(inp);
6153 TAILQ_REMOVE(&inp->read_queue, control, next);
6154 /* Add back any hiddend data */
6155 if (control->held_length) {
6157 control->held_length = 0;
6158 wakeup_read_socket = 1;
6160 if (control->aux_data) {
6161 sctp_m_free(control->aux_data);
6162 control->aux_data = NULL;
6164 no_rcv_needed = control->do_not_ref_stcb;
6165 sctp_free_remote_addr(control->whoFrom);
6166 control->data = NULL;
6168 if (control->on_strm_q) {
6169 panic("About to free ctl:%p so:%p and its in %d",
6170 control, so, control->on_strm_q);
6173 sctp_free_a_readq(stcb, control);
6175 if ((freed_so_far >= rwnd_req) &&
6176 (no_rcv_needed == 0))
6177 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6181 * The user did not read all of this
6182 * message, turn off the returned MSG_EOR
6183 * since we are leaving more behind on the
6187 if (control->end_added &&
6188 (control->data == NULL) &&
6189 (control->tail_mbuf == NULL)) {
6190 panic("Gak, control->length is corrupt?");
6193 no_rcv_needed = control->do_not_ref_stcb;
6194 out_flags &= ~MSG_EOR;
6197 if (out_flags & MSG_EOR) {
6200 if ((uio->uio_resid == 0) ||
6202 (copied_so_far >= max(so->so_rcv.sb_lowat, 1)))) {
6206 * If I hit here the receiver wants more and this message is
6207 * NOT done (pd-api). So two questions. Can we block? if not
6208 * we are done. Did the user NOT set MSG_WAITALL?
6210 if (block_allowed == 0) {
6214 * We need to wait for more data a few things: - We don't
6215 * sbunlock() so we don't get someone else reading. - We
6216 * must be sure to account for the case where what is added
6217 * is NOT to our control when we wakeup.
6221 * Do we need to tell the transport a rwnd update might be
6222 * needed before we go to sleep?
6224 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
6225 ((freed_so_far >= rwnd_req) &&
6226 (control->do_not_ref_stcb == 0) &&
6227 (no_rcv_needed == 0))) {
6228 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6231 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
6235 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
6238 if (hold_rlock == 1) {
6239 SCTP_INP_READ_UNLOCK(inp);
6242 if (hold_sblock == 0) {
6243 SOCKBUF_LOCK(&so->so_rcv);
6246 if ((copied_so_far) && (control->length == 0) &&
6247 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
6250 if (so->so_rcv.sb_cc <= control->held_length) {
6251 error = sbwait(&so->so_rcv);
6255 control->held_length = 0;
6258 SOCKBUF_UNLOCK(&so->so_rcv);
6261 if (control->length == 0) {
6262 /* still nothing here */
6263 if (control->end_added == 1) {
6264 /* he aborted, or is done i.e.did a shutdown */
6265 out_flags |= MSG_EOR;
6266 if (control->pdapi_aborted) {
6267 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6268 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6270 out_flags |= MSG_TRUNC;
6272 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6273 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6275 goto done_with_control;
6277 if (so->so_rcv.sb_cc > held_length) {
6278 control->held_length = so->so_rcv.sb_cc;
6281 goto wait_some_more;
6282 } else if (control->data == NULL) {
6284 * we must re-sync since data is probably being
6287 SCTP_INP_READ_LOCK(inp);
6288 if ((control->length > 0) && (control->data == NULL)) {
6290 * big trouble.. we have the lock and its
6294 panic("Impossible data==NULL length !=0");
6296 out_flags |= MSG_EOR;
6297 out_flags |= MSG_TRUNC;
6298 control->length = 0;
6299 SCTP_INP_READ_UNLOCK(inp);
6300 goto done_with_control;
6302 SCTP_INP_READ_UNLOCK(inp);
6303 /* We will fall around to get more data */
6308 * Give caller back the mbuf chain,
6309 * store in uio_resid the length
6311 wakeup_read_socket = 0;
6312 if ((control->end_added == 0) ||
6313 (TAILQ_NEXT(control, next) == NULL)) {
6314 /* Need to get rlock */
6315 if (hold_rlock == 0) {
6316 SCTP_INP_READ_LOCK(inp);
6320 if (control->end_added) {
6321 out_flags |= MSG_EOR;
6322 if ((control->do_not_ref_stcb == 0) &&
6323 (control->stcb != NULL) &&
6324 ((control->spec_flags & M_NOTIFICATION) == 0))
6325 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6327 if (control->spec_flags & M_NOTIFICATION) {
6328 out_flags |= MSG_NOTIFICATION;
6330 uio->uio_resid = control->length;
6331 *mp = control->data;
6334 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6335 sctp_sblog(&so->so_rcv,
6336 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6338 sctp_sbfree(control, stcb, &so->so_rcv, m);
6339 freed_so_far += (uint32_t)SCTP_BUF_LEN(m);
6340 freed_so_far += MSIZE;
6341 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6342 sctp_sblog(&so->so_rcv,
6343 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6345 m = SCTP_BUF_NEXT(m);
6347 control->data = control->tail_mbuf = NULL;
6348 control->length = 0;
6349 if (out_flags & MSG_EOR) {
6350 /* Done with this control */
6351 goto done_with_control;
6355 if (hold_rlock == 1) {
6356 SCTP_INP_READ_UNLOCK(inp);
6359 if (hold_sblock == 1) {
6360 SOCKBUF_UNLOCK(&so->so_rcv);
6364 sbunlock(&so->so_rcv);
6369 SOCKBUF_UNLOCK(&so->so_rcv);
6372 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6373 if ((freed_so_far >= rwnd_req) &&
6374 (control && (control->do_not_ref_stcb == 0)) &&
6375 (no_rcv_needed == 0))
6376 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6380 *msg_flags = out_flags;
6382 if (((out_flags & MSG_EOR) == 0) &&
6383 ((in_flags & MSG_PEEK) == 0) &&
6385 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6386 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6387 struct sctp_extrcvinfo *s_extra;
6389 s_extra = (struct sctp_extrcvinfo *)sinfo;
6390 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6392 if (hold_rlock == 1) {
6393 SCTP_INP_READ_UNLOCK(inp);
6396 SOCKBUF_UNLOCK(&so->so_rcv);
6399 sbunlock(&so->so_rcv);
6402 if (freecnt_applied) {
6404 * The lock on the socket buffer protects us so the free
6405 * code will stop. But since we used the socketbuf lock and
6406 * the sender uses the tcb_lock to increment, we need to use
6407 * the atomic add to the refcnt.
6411 panic("stcb for refcnt has gone NULL?");
6417 /* Save the value back for next time */
6418 stcb->freed_by_sorcv_sincelast = freed_so_far;
6419 atomic_add_int(&stcb->asoc.refcnt, -1);
6421 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6423 sctp_misc_ints(SCTP_SORECV_DONE,
6425 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6429 sctp_misc_ints(SCTP_SORECV_DONE,
6431 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6437 if (wakeup_read_socket) {
6438 sctp_sorwakeup(inp, so);
6444 #ifdef SCTP_MBUF_LOGGING
6446 sctp_m_free(struct mbuf *m)
6448 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6449 sctp_log_mb(m, SCTP_MBUF_IFREE);
6455 sctp_m_freem(struct mbuf *mb)
6458 mb = sctp_m_free(mb);
6464 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6467 * Given a local address. For all associations that holds the
6468 * address, request a peer-set-primary.
6470 struct sctp_ifa *ifa;
6471 struct sctp_laddr *wi;
6473 ifa = sctp_find_ifa_by_addr(sa, vrf_id, SCTP_ADDR_NOT_LOCKED);
6475 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6476 return (EADDRNOTAVAIL);
6479 * Now that we have the ifa we must awaken the iterator with this
6482 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6484 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6487 /* Now incr the count and int wi structure */
6488 SCTP_INCR_LADDR_COUNT();
6489 memset(wi, 0, sizeof(*wi));
6490 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6492 wi->action = SCTP_SET_PRIM_ADDR;
6493 atomic_add_int(&ifa->refcount, 1);
6495 /* Now add it to the work queue */
6496 SCTP_WQ_ADDR_LOCK();
6498 * Should this really be a tailq? As it is we will process the
6501 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6502 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6503 (struct sctp_inpcb *)NULL,
6504 (struct sctp_tcb *)NULL,
6505 (struct sctp_nets *)NULL);
6506 SCTP_WQ_ADDR_UNLOCK();
6512 sctp_soreceive(struct socket *so,
6513 struct sockaddr **psa,
6516 struct mbuf **controlp,
6520 uint8_t sockbuf[256];
6521 struct sockaddr *from;
6522 struct sctp_extrcvinfo sinfo;
6523 int filling_sinfo = 1;
6525 struct sctp_inpcb *inp;
6527 inp = (struct sctp_inpcb *)so->so_pcb;
6528 /* pickup the assoc we are reading from */
6530 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6533 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6534 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6535 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6536 (controlp == NULL)) {
6537 /* user does not want the sndrcv ctl */
6541 from = (struct sockaddr *)sockbuf;
6542 fromlen = sizeof(sockbuf);
6549 if (filling_sinfo) {
6550 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6552 if (flagsp != NULL) {
6557 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, &flags,
6558 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6559 if (flagsp != NULL) {
6562 if (controlp != NULL) {
6563 /* copy back the sinfo in a CMSG format */
6564 if (filling_sinfo && ((flags & MSG_NOTIFICATION) == 0)) {
6565 *controlp = sctp_build_ctl_nchunk(inp,
6566 (struct sctp_sndrcvinfo *)&sinfo);
6572 /* copy back the address info */
6573 if (from && from->sa_len) {
6574 *psa = sodupsockaddr(from, M_NOWAIT);
6587 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6588 int totaddr, int *error)
6592 struct sctp_inpcb *inp;
6593 struct sockaddr *sa;
6596 struct sockaddr_in *sin;
6599 struct sockaddr_in6 *sin6;
6603 inp = stcb->sctp_ep;
6605 for (i = 0; i < totaddr; i++) {
6606 switch (sa->sa_family) {
6609 incr = sizeof(struct sockaddr_in);
6610 sin = (struct sockaddr_in *)sa;
6611 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6612 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6613 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6614 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6615 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6616 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6620 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6621 SCTP_DONOT_SETSCOPE,
6622 SCTP_ADDR_IS_CONFIRMED)) {
6623 /* assoc gone no un-lock */
6624 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6625 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6626 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6635 incr = sizeof(struct sockaddr_in6);
6636 sin6 = (struct sockaddr_in6 *)sa;
6637 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6638 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6639 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6640 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6641 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6645 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6646 SCTP_DONOT_SETSCOPE,
6647 SCTP_ADDR_IS_CONFIRMED)) {
6648 /* assoc gone no un-lock */
6649 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6650 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6651 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6661 sa = (struct sockaddr *)((caddr_t)sa + incr);
6668 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6669 unsigned int totaddr,
6670 unsigned int *num_v4, unsigned int *num_v6,
6673 struct sockaddr *sa;
6674 struct sctp_tcb *stcb;
6675 unsigned int incr, at, i;
6679 *num_v6 = *num_v4 = 0;
6680 /* account and validate addresses */
6684 for (i = 0; i < totaddr; i++) {
6685 if (at + sizeof(struct sockaddr) > limit) {
6688 switch (sa->sa_family) {
6691 incr = (unsigned int)sizeof(struct sockaddr_in);
6692 if (sa->sa_len != incr) {
6701 struct sockaddr_in6 *sin6;
6703 sin6 = (struct sockaddr_in6 *)sa;
6704 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6705 /* Must be non-mapped for connectx */
6708 incr = (unsigned int)sizeof(struct sockaddr_in6);
6709 if (sa->sa_len != incr) {
6719 if ((at + incr) > limit) {
6722 SCTP_INP_INCR_REF(inp);
6723 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6725 SCTP_TCB_UNLOCK(stcb);
6728 SCTP_INP_DECR_REF(inp);
6731 sa = (struct sockaddr *)((caddr_t)sa + incr);
6737 * sctp_bindx(ADD) for one address.
6738 * assumes all arguments are valid/checked by caller.
6741 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6742 struct sockaddr *sa, uint32_t vrf_id, int *error,
6745 #if defined(INET) && defined(INET6)
6746 struct sockaddr_in sin;
6749 struct sockaddr_in6 *sin6;
6752 struct sockaddr_in *sinp;
6754 struct sockaddr *addr_to_use;
6755 struct sctp_inpcb *lep;
6758 /* see if we're bound all already! */
6759 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6760 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6764 switch (sa->sa_family) {
6767 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6768 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6772 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6773 /* can only bind v6 on PF_INET6 sockets */
6774 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6778 sin6 = (struct sockaddr_in6 *)sa;
6779 port = sin6->sin6_port;
6781 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6782 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6783 SCTP_IPV6_V6ONLY(inp)) {
6784 /* can't bind v4-mapped on PF_INET sockets */
6785 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6789 in6_sin6_2_sin(&sin, sin6);
6790 addr_to_use = (struct sockaddr *)&sin;
6801 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6802 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6806 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6807 SCTP_IPV6_V6ONLY(inp)) {
6808 /* can't bind v4 on PF_INET sockets */
6809 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6813 sinp = (struct sockaddr_in *)sa;
6814 port = sinp->sin_port;
6819 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6823 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6825 /* Can't get proc for Net/Open BSD */
6826 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6830 *error = sctp_inpcb_bind(so, addr_to_use, NULL, p);
6833 /* Validate the incoming port. */
6834 if ((port != 0) && (port != inp->sctp_lport)) {
6835 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6839 lep = sctp_pcb_findep(addr_to_use, 1, 0, vrf_id);
6841 /* add the address */
6842 *error = sctp_addr_mgmt_ep_sa(inp, addr_to_use,
6843 SCTP_ADD_IP_ADDRESS, vrf_id);
6846 *error = EADDRINUSE;
6848 SCTP_INP_DECR_REF(lep);
6853 * sctp_bindx(DELETE) for one address.
6854 * assumes all arguments are valid/checked by caller.
6857 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6858 struct sockaddr *sa, uint32_t vrf_id, int *error)
6860 struct sockaddr *addr_to_use;
6861 #if defined(INET) && defined(INET6)
6862 struct sockaddr_in6 *sin6;
6863 struct sockaddr_in sin;
6866 /* see if we're bound all already! */
6867 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6868 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6872 switch (sa->sa_family) {
6875 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6876 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6880 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6881 /* can only bind v6 on PF_INET6 sockets */
6882 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6887 sin6 = (struct sockaddr_in6 *)sa;
6888 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6889 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6890 SCTP_IPV6_V6ONLY(inp)) {
6891 /* can't bind mapped-v4 on PF_INET sockets */
6892 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6896 in6_sin6_2_sin(&sin, sin6);
6897 addr_to_use = (struct sockaddr *)&sin;
6908 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6909 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6913 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6914 SCTP_IPV6_V6ONLY(inp)) {
6915 /* can't bind v4 on PF_INET sockets */
6916 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6924 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6928 /* No lock required mgmt_ep_sa does its own locking. */
6929 *error = sctp_addr_mgmt_ep_sa(inp, addr_to_use, SCTP_DEL_IP_ADDRESS,
6934 * returns the valid local address count for an assoc, taking into account
6938 sctp_local_addr_count(struct sctp_tcb *stcb)
6942 int ipv4_local_scope, ipv4_addr_legal;
6945 int local_scope, site_scope, ipv6_addr_legal;
6947 struct sctp_vrf *vrf;
6948 struct sctp_ifn *sctp_ifn;
6949 struct sctp_ifa *sctp_ifa;
6952 /* Turn on all the appropriate scopes */
6953 loopback_scope = stcb->asoc.scope.loopback_scope;
6955 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6956 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6959 local_scope = stcb->asoc.scope.local_scope;
6960 site_scope = stcb->asoc.scope.site_scope;
6961 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6963 SCTP_IPI_ADDR_RLOCK();
6964 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6966 /* no vrf, no addresses */
6967 SCTP_IPI_ADDR_RUNLOCK();
6971 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6973 * bound all case: go through all ifns on the vrf
6975 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6976 if ((loopback_scope == 0) &&
6977 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6980 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6981 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6983 switch (sctp_ifa->address.sa.sa_family) {
6986 if (ipv4_addr_legal) {
6987 struct sockaddr_in *sin;
6989 sin = &sctp_ifa->address.sin;
6990 if (sin->sin_addr.s_addr == 0) {
6997 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6998 &sin->sin_addr) != 0) {
7001 if ((ipv4_local_scope == 0) &&
7002 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
7005 /* count this one */
7014 if (ipv6_addr_legal) {
7015 struct sockaddr_in6 *sin6;
7017 sin6 = &sctp_ifa->address.sin6;
7018 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
7021 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
7022 &sin6->sin6_addr) != 0) {
7025 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
7026 if (local_scope == 0)
7028 if (sin6->sin6_scope_id == 0) {
7029 if (sa6_recoverscope(sin6) != 0)
7042 if ((site_scope == 0) &&
7043 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
7046 /* count this one */
7061 struct sctp_laddr *laddr;
7063 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
7065 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
7068 /* count this one */
7072 SCTP_IPI_ADDR_RUNLOCK();
7076 #if defined(SCTP_LOCAL_TRACE_BUF)
7079 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)
7081 uint32_t saveindex, newindex;
7084 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
7085 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
7088 newindex = saveindex + 1;
7090 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
7091 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
7094 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
7095 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
7096 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
7097 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
7098 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
7099 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
7100 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
7101 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
7106 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
7107 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
7111 struct ip6_hdr *ip6;
7113 struct mbuf *sp, *last;
7114 struct udphdr *uhdr;
7117 if ((m->m_flags & M_PKTHDR) == 0) {
7118 /* Can't handle one that is not a pkt hdr */
7121 /* Pull the src port */
7122 iph = mtod(m, struct ip *);
7123 uhdr = (struct udphdr *)((caddr_t)iph + off);
7124 port = uhdr->uh_sport;
7126 * Split out the mbuf chain. Leave the IP header in m, place the
7129 sp = m_split(m, off, M_NOWAIT);
7131 /* Gak, drop packet, we can't do a split */
7134 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
7135 /* Gak, packet can't have an SCTP header in it - too small */
7139 /* Now pull up the UDP header and SCTP header together */
7140 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
7142 /* Gak pullup failed */
7145 /* Trim out the UDP header */
7146 m_adj(sp, sizeof(struct udphdr));
7148 /* Now reconstruct the mbuf chain */
7149 for (last = m; last->m_next; last = last->m_next);
7151 m->m_pkthdr.len += sp->m_pkthdr.len;
7153 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
7154 * checksum and it was valid. Since CSUM_DATA_VALID ==
7155 * CSUM_SCTP_VALID this would imply that the HW also verified the
7156 * SCTP checksum. Therefore, clear the bit.
7158 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
7159 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
7161 if_name(m->m_pkthdr.rcvif),
7162 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
7163 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
7164 iph = mtod(m, struct ip *);
7165 switch (iph->ip_v) {
7168 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
7169 sctp_input_with_port(m, off, port);
7173 case IPV6_VERSION >> 4:
7174 ip6 = mtod(m, struct ip6_hdr *);
7175 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
7176 sctp6_input_with_port(&m, &off, port);
7190 sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED)
7192 struct ip *outer_ip, *inner_ip;
7196 struct sctp_inpcb *inp;
7197 struct sctp_tcb *stcb;
7198 struct sctp_nets *net;
7199 struct sctp_init_chunk *ch;
7200 struct sockaddr_in src, dst;
7203 inner_ip = (struct ip *)vip;
7204 icmp = (struct icmp *)((caddr_t)inner_ip -
7205 (sizeof(struct icmp) - sizeof(struct ip)));
7206 outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
7207 if (ntohs(outer_ip->ip_len) <
7208 sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
7211 udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
7212 sh = (struct sctphdr *)(udp + 1);
7213 memset(&src, 0, sizeof(struct sockaddr_in));
7214 src.sin_family = AF_INET;
7215 src.sin_len = sizeof(struct sockaddr_in);
7216 src.sin_port = sh->src_port;
7217 src.sin_addr = inner_ip->ip_src;
7218 memset(&dst, 0, sizeof(struct sockaddr_in));
7219 dst.sin_family = AF_INET;
7220 dst.sin_len = sizeof(struct sockaddr_in);
7221 dst.sin_port = sh->dest_port;
7222 dst.sin_addr = inner_ip->ip_dst;
7224 * 'dst' holds the dest of the packet that failed to be sent. 'src'
7225 * holds our local endpoint address. Thus we reverse the dst and the
7226 * src in the lookup.
7230 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7231 (struct sockaddr *)&src,
7233 SCTP_DEFAULT_VRFID);
7234 if ((stcb != NULL) &&
7237 /* Check the UDP port numbers */
7238 if ((udp->uh_dport != net->port) ||
7239 (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7240 SCTP_TCB_UNLOCK(stcb);
7243 /* Check the verification tag */
7244 if (ntohl(sh->v_tag) != 0) {
7246 * This must be the verification tag used for
7247 * sending out packets. We don't consider packets
7248 * reflecting the verification tag.
7250 if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
7251 SCTP_TCB_UNLOCK(stcb);
7255 if (ntohs(outer_ip->ip_len) >=
7257 8 + (inner_ip->ip_hl << 2) + 8 + 20) {
7259 * In this case we can check if we got an
7260 * INIT chunk and if the initiate tag
7263 ch = (struct sctp_init_chunk *)(sh + 1);
7264 if ((ch->ch.chunk_type != SCTP_INITIATION) ||
7265 (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
7266 SCTP_TCB_UNLOCK(stcb);
7270 SCTP_TCB_UNLOCK(stcb);
7274 type = icmp->icmp_type;
7275 code = icmp->icmp_code;
7276 if ((type == ICMP_UNREACH) &&
7277 (code == ICMP_UNREACH_PORT)) {
7278 code = ICMP_UNREACH_PROTOCOL;
7280 sctp_notify(inp, stcb, net, type, code,
7281 ntohs(inner_ip->ip_len),
7282 (uint32_t)ntohs(icmp->icmp_nextmtu));
7284 if ((stcb == NULL) && (inp != NULL)) {
7285 /* reduce ref-count */
7286 SCTP_INP_WLOCK(inp);
7287 SCTP_INP_DECR_REF(inp);
7288 SCTP_INP_WUNLOCK(inp);
7291 SCTP_TCB_UNLOCK(stcb);
7300 sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED)
7302 struct ip6ctlparam *ip6cp;
7303 struct sctp_inpcb *inp;
7304 struct sctp_tcb *stcb;
7305 struct sctp_nets *net;
7308 struct sockaddr_in6 src, dst;
7311 ip6cp = (struct ip6ctlparam *)d;
7313 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid.
7315 if (ip6cp->ip6c_m == NULL) {
7319 * Check if we can safely examine the ports and the verification tag
7320 * of the SCTP common header.
7322 if (ip6cp->ip6c_m->m_pkthdr.len <
7323 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) {
7326 /* Copy out the UDP header. */
7327 memset(&udp, 0, sizeof(struct udphdr));
7328 m_copydata(ip6cp->ip6c_m,
7330 sizeof(struct udphdr),
7332 /* Copy out the port numbers and the verification tag. */
7333 memset(&sh, 0, sizeof(struct sctphdr));
7334 m_copydata(ip6cp->ip6c_m,
7335 ip6cp->ip6c_off + sizeof(struct udphdr),
7336 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
7338 memset(&src, 0, sizeof(struct sockaddr_in6));
7339 src.sin6_family = AF_INET6;
7340 src.sin6_len = sizeof(struct sockaddr_in6);
7341 src.sin6_port = sh.src_port;
7342 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
7343 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7346 memset(&dst, 0, sizeof(struct sockaddr_in6));
7347 dst.sin6_family = AF_INET6;
7348 dst.sin6_len = sizeof(struct sockaddr_in6);
7349 dst.sin6_port = sh.dest_port;
7350 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
7351 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7356 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7357 (struct sockaddr *)&src,
7358 &inp, &net, 1, SCTP_DEFAULT_VRFID);
7359 if ((stcb != NULL) &&
7362 /* Check the UDP port numbers */
7363 if ((udp.uh_dport != net->port) ||
7364 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7365 SCTP_TCB_UNLOCK(stcb);
7368 /* Check the verification tag */
7369 if (ntohl(sh.v_tag) != 0) {
7371 * This must be the verification tag used for
7372 * sending out packets. We don't consider packets
7373 * reflecting the verification tag.
7375 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
7376 SCTP_TCB_UNLOCK(stcb);
7380 if (ip6cp->ip6c_m->m_pkthdr.len >=
7381 ip6cp->ip6c_off + sizeof(struct udphdr) +
7382 sizeof(struct sctphdr) +
7383 sizeof(struct sctp_chunkhdr) +
7384 offsetof(struct sctp_init, a_rwnd)) {
7386 * In this case we can check if we got an
7387 * INIT chunk and if the initiate tag
7390 uint32_t initiate_tag;
7393 m_copydata(ip6cp->ip6c_m,
7395 sizeof(struct udphdr) +
7396 sizeof(struct sctphdr),
7398 (caddr_t)&chunk_type);
7399 m_copydata(ip6cp->ip6c_m,
7401 sizeof(struct udphdr) +
7402 sizeof(struct sctphdr) +
7403 sizeof(struct sctp_chunkhdr),
7405 (caddr_t)&initiate_tag);
7406 if ((chunk_type != SCTP_INITIATION) ||
7407 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
7408 SCTP_TCB_UNLOCK(stcb);
7412 SCTP_TCB_UNLOCK(stcb);
7416 type = ip6cp->ip6c_icmp6->icmp6_type;
7417 code = ip6cp->ip6c_icmp6->icmp6_code;
7418 if ((type == ICMP6_DST_UNREACH) &&
7419 (code == ICMP6_DST_UNREACH_NOPORT)) {
7420 type = ICMP6_PARAM_PROB;
7421 code = ICMP6_PARAMPROB_NEXTHEADER;
7423 sctp6_notify(inp, stcb, net, type, code,
7424 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
7426 if ((stcb == NULL) && (inp != NULL)) {
7427 /* reduce inp's ref-count */
7428 SCTP_INP_WLOCK(inp);
7429 SCTP_INP_DECR_REF(inp);
7430 SCTP_INP_WUNLOCK(inp);
7433 SCTP_TCB_UNLOCK(stcb);
7440 sctp_over_udp_stop(void)
7443 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7447 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7448 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7449 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7453 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7454 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7455 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7461 sctp_over_udp_start(void)
7466 struct sockaddr_in sin;
7469 struct sockaddr_in6 sin6;
7472 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7475 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7476 if (ntohs(port) == 0) {
7477 /* Must have a port set */
7481 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7482 /* Already running -- must stop first */
7487 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7488 /* Already running -- must stop first */
7493 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7494 SOCK_DGRAM, IPPROTO_UDP,
7495 curthread->td_ucred, curthread))) {
7496 sctp_over_udp_stop();
7499 /* Call the special UDP hook. */
7500 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7501 sctp_recv_udp_tunneled_packet,
7502 sctp_recv_icmp_tunneled_packet,
7504 sctp_over_udp_stop();
7507 /* Ok, we have a socket, bind it to the port. */
7508 memset(&sin, 0, sizeof(struct sockaddr_in));
7509 sin.sin_len = sizeof(struct sockaddr_in);
7510 sin.sin_family = AF_INET;
7511 sin.sin_port = htons(port);
7512 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7513 (struct sockaddr *)&sin, curthread))) {
7514 sctp_over_udp_stop();
7519 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7520 SOCK_DGRAM, IPPROTO_UDP,
7521 curthread->td_ucred, curthread))) {
7522 sctp_over_udp_stop();
7525 /* Call the special UDP hook. */
7526 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7527 sctp_recv_udp_tunneled_packet,
7528 sctp_recv_icmp6_tunneled_packet,
7530 sctp_over_udp_stop();
7533 /* Ok, we have a socket, bind it to the port. */
7534 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7535 sin6.sin6_len = sizeof(struct sockaddr_in6);
7536 sin6.sin6_family = AF_INET6;
7537 sin6.sin6_port = htons(port);
7538 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7539 (struct sockaddr *)&sin6, curthread))) {
7540 sctp_over_udp_stop();
7548 * sctp_min_mtu ()returns the minimum of all non-zero arguments.
7549 * If all arguments are zero, zero is returned.
7552 sctp_min_mtu(uint32_t mtu1, uint32_t mtu2, uint32_t mtu3)
7557 return (min(mtu1, min(mtu2, mtu3)));
7559 return (min(mtu1, mtu2));
7563 return (min(mtu1, mtu3));
7571 return (min(mtu2, mtu3));
7582 sctp_hc_set_mtu(union sctp_sockstore *addr, uint16_t fibnum, uint32_t mtu)
7584 struct in_conninfo inc;
7586 memset(&inc, 0, sizeof(struct in_conninfo));
7587 inc.inc_fibnum = fibnum;
7588 switch (addr->sa.sa_family) {
7591 inc.inc_faddr = addr->sin.sin_addr;
7596 inc.inc_flags |= INC_ISIPV6;
7597 inc.inc6_faddr = addr->sin6.sin6_addr;
7603 tcp_hc_updatemtu(&inc, (u_long)mtu);
7607 sctp_hc_get_mtu(union sctp_sockstore *addr, uint16_t fibnum)
7609 struct in_conninfo inc;
7611 memset(&inc, 0, sizeof(struct in_conninfo));
7612 inc.inc_fibnum = fibnum;
7613 switch (addr->sa.sa_family) {
7616 inc.inc_faddr = addr->sin.sin_addr;
7621 inc.inc_flags |= INC_ISIPV6;
7622 inc.inc6_faddr = addr->sin6.sin6_addr;
7628 return ((uint32_t)tcp_hc_getmtu(&inc));
7632 sctp_set_state(struct sctp_tcb *stcb, int new_state)
7634 #if defined(KDTRACE_HOOKS)
7635 int old_state = stcb->asoc.state;
7638 KASSERT((new_state & ~SCTP_STATE_MASK) == 0,
7639 ("sctp_set_state: Can't set substate (new_state = %x)",
7641 stcb->asoc.state = (stcb->asoc.state & ~SCTP_STATE_MASK) | new_state;
7642 if ((new_state == SCTP_STATE_SHUTDOWN_RECEIVED) ||
7643 (new_state == SCTP_STATE_SHUTDOWN_SENT) ||
7644 (new_state == SCTP_STATE_SHUTDOWN_ACK_SENT)) {
7645 SCTP_CLEAR_SUBSTATE(stcb, SCTP_STATE_SHUTDOWN_PENDING);
7647 #if defined(KDTRACE_HOOKS)
7648 if (((old_state & SCTP_STATE_MASK) != new_state) &&
7649 !(((old_state & SCTP_STATE_MASK) == SCTP_STATE_EMPTY) &&
7650 (new_state == SCTP_STATE_INUSE))) {
7651 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);
7657 sctp_add_substate(struct sctp_tcb *stcb, int substate)
7659 #if defined(KDTRACE_HOOKS)
7660 int old_state = stcb->asoc.state;
7663 KASSERT((substate & SCTP_STATE_MASK) == 0,
7664 ("sctp_add_substate: Can't set state (substate = %x)",
7666 stcb->asoc.state |= substate;
7667 #if defined(KDTRACE_HOOKS)
7668 if (((substate & SCTP_STATE_ABOUT_TO_BE_FREED) &&
7669 ((old_state & SCTP_STATE_ABOUT_TO_BE_FREED) == 0)) ||
7670 ((substate & SCTP_STATE_SHUTDOWN_PENDING) &&
7671 ((old_state & SCTP_STATE_SHUTDOWN_PENDING) == 0))) {
7672 SCTP_PROBE6(state__change, NULL, stcb, NULL, stcb, NULL, old_state);