2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <netinet/sctp_os.h>
37 #include <netinet/sctp_pcb.h>
38 #include <netinet/sctputil.h>
39 #include <netinet/sctp_var.h>
40 #include <netinet/sctp_sysctl.h>
42 #include <netinet6/sctp6_var.h>
44 #include <netinet/sctp_header.h>
45 #include <netinet/sctp_output.h>
46 #include <netinet/sctp_uio.h>
47 #include <netinet/sctp_timer.h>
48 #include <netinet/sctp_indata.h>
49 #include <netinet/sctp_auth.h>
50 #include <netinet/sctp_asconf.h>
51 #include <netinet/sctp_bsd_addr.h>
52 #if defined(INET6) || defined(INET)
53 #include <netinet/tcp_var.h>
55 #include <netinet/udp.h>
56 #include <netinet/udp_var.h>
59 #include <netinet/icmp6.h>
64 #define KTR_SCTP KTR_SUBSYS
67 extern const struct sctp_cc_functions sctp_cc_functions[];
68 extern const struct sctp_ss_functions sctp_ss_functions[];
71 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr)
73 struct sctp_cwnd_log sctp_clog;
75 sctp_clog.x.sb.stcb = stcb;
76 sctp_clog.x.sb.so_sbcc = sb->sb_cc;
78 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
80 sctp_clog.x.sb.stcb_sbcc = 0;
81 sctp_clog.x.sb.incr = incr;
82 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
85 sctp_clog.x.misc.log1,
86 sctp_clog.x.misc.log2,
87 sctp_clog.x.misc.log3,
88 sctp_clog.x.misc.log4);
92 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
94 struct sctp_cwnd_log sctp_clog;
96 sctp_clog.x.close.inp = (void *)inp;
97 sctp_clog.x.close.sctp_flags = inp->sctp_flags;
99 sctp_clog.x.close.stcb = (void *)stcb;
100 sctp_clog.x.close.state = (uint16_t)stcb->asoc.state;
102 sctp_clog.x.close.stcb = 0;
103 sctp_clog.x.close.state = 0;
105 sctp_clog.x.close.loc = loc;
106 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
107 SCTP_LOG_EVENT_CLOSE,
109 sctp_clog.x.misc.log1,
110 sctp_clog.x.misc.log2,
111 sctp_clog.x.misc.log3,
112 sctp_clog.x.misc.log4);
116 rto_logging(struct sctp_nets *net, int from)
118 struct sctp_cwnd_log sctp_clog;
120 memset(&sctp_clog, 0, sizeof(sctp_clog));
121 sctp_clog.x.rto.net = (void *)net;
122 sctp_clog.x.rto.rtt = net->rtt / 1000;
123 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
126 sctp_clog.x.misc.log1,
127 sctp_clog.x.misc.log2,
128 sctp_clog.x.misc.log3,
129 sctp_clog.x.misc.log4);
133 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
135 struct sctp_cwnd_log sctp_clog;
137 sctp_clog.x.strlog.stcb = stcb;
138 sctp_clog.x.strlog.n_tsn = tsn;
139 sctp_clog.x.strlog.n_sseq = sseq;
140 sctp_clog.x.strlog.e_tsn = 0;
141 sctp_clog.x.strlog.e_sseq = 0;
142 sctp_clog.x.strlog.strm = stream;
143 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
146 sctp_clog.x.misc.log1,
147 sctp_clog.x.misc.log2,
148 sctp_clog.x.misc.log3,
149 sctp_clog.x.misc.log4);
153 sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
155 struct sctp_cwnd_log sctp_clog;
157 sctp_clog.x.nagle.stcb = (void *)stcb;
158 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
159 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
160 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
161 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
162 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
163 SCTP_LOG_EVENT_NAGLE,
165 sctp_clog.x.misc.log1,
166 sctp_clog.x.misc.log2,
167 sctp_clog.x.misc.log3,
168 sctp_clog.x.misc.log4);
172 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
174 struct sctp_cwnd_log sctp_clog;
176 sctp_clog.x.sack.cumack = cumack;
177 sctp_clog.x.sack.oldcumack = old_cumack;
178 sctp_clog.x.sack.tsn = tsn;
179 sctp_clog.x.sack.numGaps = gaps;
180 sctp_clog.x.sack.numDups = dups;
181 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
184 sctp_clog.x.misc.log1,
185 sctp_clog.x.misc.log2,
186 sctp_clog.x.misc.log3,
187 sctp_clog.x.misc.log4);
191 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
193 struct sctp_cwnd_log sctp_clog;
195 memset(&sctp_clog, 0, sizeof(sctp_clog));
196 sctp_clog.x.map.base = map;
197 sctp_clog.x.map.cum = cum;
198 sctp_clog.x.map.high = high;
199 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
202 sctp_clog.x.misc.log1,
203 sctp_clog.x.misc.log2,
204 sctp_clog.x.misc.log3,
205 sctp_clog.x.misc.log4);
209 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from)
211 struct sctp_cwnd_log sctp_clog;
213 memset(&sctp_clog, 0, sizeof(sctp_clog));
214 sctp_clog.x.fr.largest_tsn = biggest_tsn;
215 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
216 sctp_clog.x.fr.tsn = tsn;
217 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
220 sctp_clog.x.misc.log1,
221 sctp_clog.x.misc.log2,
222 sctp_clog.x.misc.log3,
223 sctp_clog.x.misc.log4);
226 #ifdef SCTP_MBUF_LOGGING
228 sctp_log_mb(struct mbuf *m, int from)
230 struct sctp_cwnd_log sctp_clog;
232 sctp_clog.x.mb.mp = m;
233 sctp_clog.x.mb.mbuf_flags = (uint8_t)(SCTP_BUF_GET_FLAGS(m));
234 sctp_clog.x.mb.size = (uint16_t)(SCTP_BUF_LEN(m));
235 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
236 if (SCTP_BUF_IS_EXTENDED(m)) {
237 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
238 sctp_clog.x.mb.refcnt = (uint8_t)(SCTP_BUF_EXTEND_REFCNT(m));
240 sctp_clog.x.mb.ext = 0;
241 sctp_clog.x.mb.refcnt = 0;
243 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
246 sctp_clog.x.misc.log1,
247 sctp_clog.x.misc.log2,
248 sctp_clog.x.misc.log3,
249 sctp_clog.x.misc.log4);
253 sctp_log_mbc(struct mbuf *m, int from)
257 for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
258 sctp_log_mb(mat, from);
264 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from)
266 struct sctp_cwnd_log sctp_clog;
268 if (control == NULL) {
269 SCTP_PRINTF("Gak log of NULL?\n");
272 sctp_clog.x.strlog.stcb = control->stcb;
273 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
274 sctp_clog.x.strlog.n_sseq = (uint16_t)control->mid;
275 sctp_clog.x.strlog.strm = control->sinfo_stream;
276 if (poschk != NULL) {
277 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
278 sctp_clog.x.strlog.e_sseq = (uint16_t)poschk->mid;
280 sctp_clog.x.strlog.e_tsn = 0;
281 sctp_clog.x.strlog.e_sseq = 0;
283 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
286 sctp_clog.x.misc.log1,
287 sctp_clog.x.misc.log2,
288 sctp_clog.x.misc.log3,
289 sctp_clog.x.misc.log4);
293 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
295 struct sctp_cwnd_log sctp_clog;
297 sctp_clog.x.cwnd.net = net;
298 if (stcb->asoc.send_queue_cnt > 255)
299 sctp_clog.x.cwnd.cnt_in_send = 255;
301 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
302 if (stcb->asoc.stream_queue_cnt > 255)
303 sctp_clog.x.cwnd.cnt_in_str = 255;
305 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
308 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
309 sctp_clog.x.cwnd.inflight = net->flight_size;
310 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
311 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
312 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
314 if (SCTP_CWNDLOG_PRESEND == from) {
315 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
317 sctp_clog.x.cwnd.cwnd_augment = augment;
318 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
321 sctp_clog.x.misc.log1,
322 sctp_clog.x.misc.log2,
323 sctp_clog.x.misc.log3,
324 sctp_clog.x.misc.log4);
328 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
330 struct sctp_cwnd_log sctp_clog;
332 memset(&sctp_clog, 0, sizeof(sctp_clog));
334 sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
337 sctp_clog.x.lock.sock = (void *)NULL;
339 sctp_clog.x.lock.inp = (void *)inp;
341 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
343 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
346 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
347 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
349 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
350 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
352 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
353 if (inp && (inp->sctp_socket)) {
354 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
355 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
356 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
358 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
359 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
360 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
362 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
365 sctp_clog.x.misc.log1,
366 sctp_clog.x.misc.log2,
367 sctp_clog.x.misc.log3,
368 sctp_clog.x.misc.log4);
372 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
374 struct sctp_cwnd_log sctp_clog;
376 memset(&sctp_clog, 0, sizeof(sctp_clog));
377 sctp_clog.x.cwnd.net = net;
378 sctp_clog.x.cwnd.cwnd_new_value = error;
379 sctp_clog.x.cwnd.inflight = net->flight_size;
380 sctp_clog.x.cwnd.cwnd_augment = burst;
381 if (stcb->asoc.send_queue_cnt > 255)
382 sctp_clog.x.cwnd.cnt_in_send = 255;
384 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
385 if (stcb->asoc.stream_queue_cnt > 255)
386 sctp_clog.x.cwnd.cnt_in_str = 255;
388 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
389 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
390 SCTP_LOG_EVENT_MAXBURST,
392 sctp_clog.x.misc.log1,
393 sctp_clog.x.misc.log2,
394 sctp_clog.x.misc.log3,
395 sctp_clog.x.misc.log4);
399 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
401 struct sctp_cwnd_log sctp_clog;
403 sctp_clog.x.rwnd.rwnd = peers_rwnd;
404 sctp_clog.x.rwnd.send_size = snd_size;
405 sctp_clog.x.rwnd.overhead = overhead;
406 sctp_clog.x.rwnd.new_rwnd = 0;
407 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
410 sctp_clog.x.misc.log1,
411 sctp_clog.x.misc.log2,
412 sctp_clog.x.misc.log3,
413 sctp_clog.x.misc.log4);
417 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
419 struct sctp_cwnd_log sctp_clog;
421 sctp_clog.x.rwnd.rwnd = peers_rwnd;
422 sctp_clog.x.rwnd.send_size = flight_size;
423 sctp_clog.x.rwnd.overhead = overhead;
424 sctp_clog.x.rwnd.new_rwnd = a_rwndval;
425 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
428 sctp_clog.x.misc.log1,
429 sctp_clog.x.misc.log2,
430 sctp_clog.x.misc.log3,
431 sctp_clog.x.misc.log4);
434 #ifdef SCTP_MBCNT_LOGGING
436 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
438 struct sctp_cwnd_log sctp_clog;
440 sctp_clog.x.mbcnt.total_queue_size = total_oq;
441 sctp_clog.x.mbcnt.size_change = book;
442 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
443 sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
444 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
445 SCTP_LOG_EVENT_MBCNT,
447 sctp_clog.x.misc.log1,
448 sctp_clog.x.misc.log2,
449 sctp_clog.x.misc.log3,
450 sctp_clog.x.misc.log4);
455 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
457 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
464 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from)
466 struct sctp_cwnd_log sctp_clog;
468 sctp_clog.x.wake.stcb = (void *)stcb;
469 sctp_clog.x.wake.wake_cnt = wake_cnt;
470 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
471 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
472 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
474 if (stcb->asoc.stream_queue_cnt < 0xff)
475 sctp_clog.x.wake.stream_qcnt = (uint8_t)stcb->asoc.stream_queue_cnt;
477 sctp_clog.x.wake.stream_qcnt = 0xff;
479 if (stcb->asoc.chunks_on_out_queue < 0xff)
480 sctp_clog.x.wake.chunks_on_oque = (uint8_t)stcb->asoc.chunks_on_out_queue;
482 sctp_clog.x.wake.chunks_on_oque = 0xff;
484 sctp_clog.x.wake.sctpflags = 0;
485 /* set in the defered mode stuff */
486 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
487 sctp_clog.x.wake.sctpflags |= 1;
488 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
489 sctp_clog.x.wake.sctpflags |= 2;
490 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
491 sctp_clog.x.wake.sctpflags |= 4;
492 /* what about the sb */
493 if (stcb->sctp_socket) {
494 struct socket *so = stcb->sctp_socket;
496 sctp_clog.x.wake.sbflags = (uint8_t)((so->so_snd.sb_flags & 0x00ff));
498 sctp_clog.x.wake.sbflags = 0xff;
500 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
503 sctp_clog.x.misc.log1,
504 sctp_clog.x.misc.log2,
505 sctp_clog.x.misc.log3,
506 sctp_clog.x.misc.log4);
510 sctp_log_block(uint8_t from, struct sctp_association *asoc, size_t sendlen)
512 struct sctp_cwnd_log sctp_clog;
514 sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
515 sctp_clog.x.blk.send_sent_qcnt = (uint16_t)(asoc->send_queue_cnt + asoc->sent_queue_cnt);
516 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
517 sctp_clog.x.blk.stream_qcnt = (uint16_t)asoc->stream_queue_cnt;
518 sctp_clog.x.blk.chunks_on_oque = (uint16_t)asoc->chunks_on_out_queue;
519 sctp_clog.x.blk.flight_size = (uint16_t)(asoc->total_flight / 1024);
520 sctp_clog.x.blk.sndlen = (uint32_t)sendlen;
521 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
522 SCTP_LOG_EVENT_BLOCK,
524 sctp_clog.x.misc.log1,
525 sctp_clog.x.misc.log2,
526 sctp_clog.x.misc.log3,
527 sctp_clog.x.misc.log4);
531 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
533 /* May need to fix this if ktrdump does not work */
537 #ifdef SCTP_AUDITING_ENABLED
538 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
539 static int sctp_audit_indx = 0;
543 sctp_print_audit_report(void)
549 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
550 if ((sctp_audit_data[i][0] == 0xe0) &&
551 (sctp_audit_data[i][1] == 0x01)) {
554 } else if (sctp_audit_data[i][0] == 0xf0) {
557 } else if ((sctp_audit_data[i][0] == 0xc0) &&
558 (sctp_audit_data[i][1] == 0x01)) {
562 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
563 (uint32_t)sctp_audit_data[i][1]);
568 for (i = 0; i < sctp_audit_indx; i++) {
569 if ((sctp_audit_data[i][0] == 0xe0) &&
570 (sctp_audit_data[i][1] == 0x01)) {
573 } else if (sctp_audit_data[i][0] == 0xf0) {
576 } else if ((sctp_audit_data[i][0] == 0xc0) &&
577 (sctp_audit_data[i][1] == 0x01)) {
581 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
582 (uint32_t)sctp_audit_data[i][1]);
591 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
592 struct sctp_nets *net)
594 int resend_cnt, tot_out, rep, tot_book_cnt;
595 struct sctp_nets *lnet;
596 struct sctp_tmit_chunk *chk;
598 sctp_audit_data[sctp_audit_indx][0] = 0xAA;
599 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
601 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
605 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
606 sctp_audit_data[sctp_audit_indx][1] = 0x01;
608 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
614 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
615 sctp_audit_data[sctp_audit_indx][1] = 0x02;
617 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
622 sctp_audit_data[sctp_audit_indx][0] = 0xA1;
623 sctp_audit_data[sctp_audit_indx][1] =
624 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
626 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
631 resend_cnt = tot_out = 0;
632 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
633 if (chk->sent == SCTP_DATAGRAM_RESEND) {
635 } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
636 tot_out += chk->book_size;
640 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
641 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
642 sctp_audit_data[sctp_audit_indx][1] = 0xA1;
644 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
647 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
648 resend_cnt, stcb->asoc.sent_queue_retran_cnt);
650 stcb->asoc.sent_queue_retran_cnt = resend_cnt;
651 sctp_audit_data[sctp_audit_indx][0] = 0xA2;
652 sctp_audit_data[sctp_audit_indx][1] =
653 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
655 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
659 if (tot_out != stcb->asoc.total_flight) {
660 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
661 sctp_audit_data[sctp_audit_indx][1] = 0xA2;
663 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
667 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
668 (int)stcb->asoc.total_flight);
669 stcb->asoc.total_flight = tot_out;
671 if (tot_book_cnt != stcb->asoc.total_flight_count) {
672 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
673 sctp_audit_data[sctp_audit_indx][1] = 0xA5;
675 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
679 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
681 stcb->asoc.total_flight_count = tot_book_cnt;
684 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
685 tot_out += lnet->flight_size;
687 if (tot_out != stcb->asoc.total_flight) {
688 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
689 sctp_audit_data[sctp_audit_indx][1] = 0xA3;
691 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
695 SCTP_PRINTF("real flight:%d net total was %d\n",
696 stcb->asoc.total_flight, tot_out);
697 /* now corrective action */
698 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
701 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
702 if ((chk->whoTo == lnet) &&
703 (chk->sent < SCTP_DATAGRAM_RESEND)) {
704 tot_out += chk->book_size;
707 if (lnet->flight_size != tot_out) {
708 SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
709 (void *)lnet, lnet->flight_size,
711 lnet->flight_size = tot_out;
716 sctp_print_audit_report();
721 sctp_audit_log(uint8_t ev, uint8_t fd)
724 sctp_audit_data[sctp_audit_indx][0] = ev;
725 sctp_audit_data[sctp_audit_indx][1] = fd;
727 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
735 * sctp_stop_timers_for_shutdown() should be called
736 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
737 * state to make sure that all timers are stopped.
740 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
742 struct sctp_association *asoc;
743 struct sctp_nets *net;
747 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
748 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
749 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
750 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
751 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
752 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
753 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
754 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
759 * a list of sizes based on typical mtu's, used only if next hop size not
762 static uint32_t sctp_mtu_sizes[] = {
784 * Return the largest MTU smaller than val. If there is no
785 * entry, just return val.
788 sctp_get_prev_mtu(uint32_t val)
792 if (val <= sctp_mtu_sizes[0]) {
795 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
796 if (val <= sctp_mtu_sizes[i]) {
800 return (sctp_mtu_sizes[i - 1]);
804 * Return the smallest MTU larger than val. If there is no
805 * entry, just return val.
808 sctp_get_next_mtu(uint32_t val)
810 /* select another MTU that is just bigger than this one */
813 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
814 if (val < sctp_mtu_sizes[i]) {
815 return (sctp_mtu_sizes[i]);
822 sctp_fill_random_store(struct sctp_pcb *m)
825 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
826 * our counter. The result becomes our good random numbers and we
827 * then setup to give these out. Note that we do no locking to
828 * protect this. This is ok, since if competing folks call this we
829 * will get more gobbled gook in the random store which is what we
830 * want. There is a danger that two guys will use the same random
831 * numbers, but thats ok too since that is random as well :->
834 (void)sctp_hmac(SCTP_HMAC, (uint8_t *)m->random_numbers,
835 sizeof(m->random_numbers), (uint8_t *)&m->random_counter,
836 sizeof(m->random_counter), (uint8_t *)m->random_store);
841 sctp_select_initial_TSN(struct sctp_pcb *inp)
844 * A true implementation should use random selection process to get
845 * the initial stream sequence number, using RFC1750 as a good
850 int store_at, new_store;
852 if (inp->initial_sequence_debug != 0) {
855 ret = inp->initial_sequence_debug;
856 inp->initial_sequence_debug++;
860 store_at = inp->store_at;
861 new_store = store_at + sizeof(uint32_t);
862 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
865 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
868 if (new_store == 0) {
869 /* Refill the random store */
870 sctp_fill_random_store(inp);
872 p = &inp->random_store[store_at];
879 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
885 (void)SCTP_GETTIME_TIMEVAL(&now);
888 x = sctp_select_initial_TSN(&inp->sctp_ep);
893 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
901 sctp_map_assoc_state(int kernel_state)
905 if (kernel_state & SCTP_STATE_WAS_ABORTED) {
906 user_state = SCTP_CLOSED;
907 } else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) {
908 user_state = SCTP_SHUTDOWN_PENDING;
910 switch (kernel_state & SCTP_STATE_MASK) {
911 case SCTP_STATE_EMPTY:
912 user_state = SCTP_CLOSED;
914 case SCTP_STATE_INUSE:
915 user_state = SCTP_CLOSED;
917 case SCTP_STATE_COOKIE_WAIT:
918 user_state = SCTP_COOKIE_WAIT;
920 case SCTP_STATE_COOKIE_ECHOED:
921 user_state = SCTP_COOKIE_ECHOED;
923 case SCTP_STATE_OPEN:
924 user_state = SCTP_ESTABLISHED;
926 case SCTP_STATE_SHUTDOWN_SENT:
927 user_state = SCTP_SHUTDOWN_SENT;
929 case SCTP_STATE_SHUTDOWN_RECEIVED:
930 user_state = SCTP_SHUTDOWN_RECEIVED;
932 case SCTP_STATE_SHUTDOWN_ACK_SENT:
933 user_state = SCTP_SHUTDOWN_ACK_SENT;
936 user_state = SCTP_CLOSED;
944 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
945 uint32_t override_tag, uint32_t vrf_id, uint16_t o_strms)
947 struct sctp_association *asoc;
950 * Anything set to zero is taken care of by the allocation routine's
955 * Up front select what scoping to apply on addresses I tell my peer
956 * Not sure what to do with these right now, we will need to come up
957 * with a way to set them. We may need to pass them through from the
958 * caller in the sctp_aloc_assoc() function.
961 #if defined(SCTP_DETAILED_STR_STATS)
966 /* init all variables to a known value. */
967 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
968 asoc->max_burst = inp->sctp_ep.max_burst;
969 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
970 asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
971 asoc->cookie_life = inp->sctp_ep.def_cookie_life;
972 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
973 asoc->ecn_supported = inp->ecn_supported;
974 asoc->prsctp_supported = inp->prsctp_supported;
975 asoc->idata_supported = inp->idata_supported;
976 asoc->auth_supported = inp->auth_supported;
977 asoc->asconf_supported = inp->asconf_supported;
978 asoc->reconfig_supported = inp->reconfig_supported;
979 asoc->nrsack_supported = inp->nrsack_supported;
980 asoc->pktdrop_supported = inp->pktdrop_supported;
981 asoc->idata_supported = inp->idata_supported;
982 asoc->sctp_cmt_pf = (uint8_t)0;
983 asoc->sctp_frag_point = inp->sctp_frag_point;
984 asoc->sctp_features = inp->sctp_features;
985 asoc->default_dscp = inp->sctp_ep.default_dscp;
986 asoc->max_cwnd = inp->max_cwnd;
988 if (inp->sctp_ep.default_flowlabel) {
989 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
991 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
992 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
993 asoc->default_flowlabel &= 0x000fffff;
994 asoc->default_flowlabel |= 0x80000000;
996 asoc->default_flowlabel = 0;
1000 asoc->sb_send_resv = 0;
1002 asoc->my_vtag = override_tag;
1004 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
1006 /* Get the nonce tags */
1007 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1008 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1009 asoc->vrf_id = vrf_id;
1011 #ifdef SCTP_ASOCLOG_OF_TSNS
1012 asoc->tsn_in_at = 0;
1013 asoc->tsn_out_at = 0;
1014 asoc->tsn_in_wrapped = 0;
1015 asoc->tsn_out_wrapped = 0;
1016 asoc->cumack_log_at = 0;
1017 asoc->cumack_log_atsnt = 0;
1019 #ifdef SCTP_FS_SPEC_LOG
1023 asoc->assoc_up_sent = 0;
1024 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
1025 sctp_select_initial_TSN(&inp->sctp_ep);
1026 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
1027 /* we are optimisitic here */
1028 asoc->peer_supports_nat = 0;
1029 asoc->sent_queue_retran_cnt = 0;
1032 asoc->last_net_cmt_send_started = NULL;
1034 /* This will need to be adjusted */
1035 asoc->last_acked_seq = asoc->init_seq_number - 1;
1036 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
1037 asoc->asconf_seq_in = asoc->last_acked_seq;
1039 /* here we are different, we hold the next one we expect */
1040 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
1042 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
1043 asoc->initial_rto = inp->sctp_ep.initial_rto;
1045 asoc->default_mtu = inp->sctp_ep.default_mtu;
1046 asoc->max_init_times = inp->sctp_ep.max_init_times;
1047 asoc->max_send_times = inp->sctp_ep.max_send_times;
1048 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
1049 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
1050 asoc->free_chunk_cnt = 0;
1052 asoc->iam_blocking = 0;
1053 asoc->context = inp->sctp_context;
1054 asoc->local_strreset_support = inp->local_strreset_support;
1055 asoc->def_send = inp->def_send;
1056 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1057 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
1058 asoc->pr_sctp_cnt = 0;
1059 asoc->total_output_queue_size = 0;
1061 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1062 asoc->scope.ipv6_addr_legal = 1;
1063 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1064 asoc->scope.ipv4_addr_legal = 1;
1066 asoc->scope.ipv4_addr_legal = 0;
1069 asoc->scope.ipv6_addr_legal = 0;
1070 asoc->scope.ipv4_addr_legal = 1;
1073 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1074 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1076 asoc->smallest_mtu = inp->sctp_frag_point;
1077 asoc->minrto = inp->sctp_ep.sctp_minrto;
1078 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1080 asoc->stream_locked_on = 0;
1081 asoc->ecn_echo_cnt_onq = 0;
1082 asoc->stream_locked = 0;
1084 asoc->send_sack = 1;
1086 LIST_INIT(&asoc->sctp_restricted_addrs);
1088 TAILQ_INIT(&asoc->nets);
1089 TAILQ_INIT(&asoc->pending_reply_queue);
1090 TAILQ_INIT(&asoc->asconf_ack_sent);
1091 /* Setup to fill the hb random cache at first HB */
1092 asoc->hb_random_idx = 4;
1094 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1096 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1097 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1099 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1100 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1103 * Now the stream parameters, here we allocate space for all streams
1104 * that we request by default.
1106 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1108 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1109 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1111 if (asoc->strmout == NULL) {
1112 /* big trouble no memory */
1113 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1116 for (i = 0; i < asoc->streamoutcnt; i++) {
1118 * inbound side must be set to 0xffff, also NOTE when we get
1119 * the INIT-ACK back (for INIT sender) we MUST reduce the
1120 * count (streamoutcnt) but first check if we sent to any of
1121 * the upper streams that were dropped (if some were). Those
1122 * that were dropped must be notified to the upper layer as
1125 asoc->strmout[i].next_mid_ordered = 0;
1126 asoc->strmout[i].next_mid_unordered = 0;
1127 TAILQ_INIT(&asoc->strmout[i].outqueue);
1128 asoc->strmout[i].chunks_on_queues = 0;
1129 #if defined(SCTP_DETAILED_STR_STATS)
1130 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1131 asoc->strmout[i].abandoned_sent[j] = 0;
1132 asoc->strmout[i].abandoned_unsent[j] = 0;
1135 asoc->strmout[i].abandoned_sent[0] = 0;
1136 asoc->strmout[i].abandoned_unsent[0] = 0;
1138 asoc->strmout[i].sid = i;
1139 asoc->strmout[i].last_msg_incomplete = 0;
1140 asoc->strmout[i].state = SCTP_STREAM_OPENING;
1141 asoc->ss_functions.sctp_ss_init_stream(stcb, &asoc->strmout[i], NULL);
1143 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1145 /* Now the mapping array */
1146 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1147 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1149 if (asoc->mapping_array == NULL) {
1150 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1151 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1154 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1155 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1157 if (asoc->nr_mapping_array == NULL) {
1158 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1159 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1160 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1163 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1165 /* Now the init of the other outqueues */
1166 TAILQ_INIT(&asoc->free_chunks);
1167 TAILQ_INIT(&asoc->control_send_queue);
1168 TAILQ_INIT(&asoc->asconf_send_queue);
1169 TAILQ_INIT(&asoc->send_queue);
1170 TAILQ_INIT(&asoc->sent_queue);
1171 TAILQ_INIT(&asoc->resetHead);
1172 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1173 TAILQ_INIT(&asoc->asconf_queue);
1174 /* authentication fields */
1175 asoc->authinfo.random = NULL;
1176 asoc->authinfo.active_keyid = 0;
1177 asoc->authinfo.assoc_key = NULL;
1178 asoc->authinfo.assoc_keyid = 0;
1179 asoc->authinfo.recv_key = NULL;
1180 asoc->authinfo.recv_keyid = 0;
1181 LIST_INIT(&asoc->shared_keys);
1182 asoc->marked_retrans = 0;
1183 asoc->port = inp->sctp_ep.port;
1187 asoc->timoshutdown = 0;
1188 asoc->timoheartbeat = 0;
1189 asoc->timocookie = 0;
1190 asoc->timoshutdownack = 0;
1191 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1192 asoc->discontinuity_time = asoc->start_time;
1193 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1194 asoc->abandoned_unsent[i] = 0;
1195 asoc->abandoned_sent[i] = 0;
1198 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1199 * freed later when the association is freed.
1205 sctp_print_mapping_array(struct sctp_association *asoc)
1207 unsigned int i, limit;
1209 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1210 asoc->mapping_array_size,
1211 asoc->mapping_array_base_tsn,
1212 asoc->cumulative_tsn,
1213 asoc->highest_tsn_inside_map,
1214 asoc->highest_tsn_inside_nr_map);
1215 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1216 if (asoc->mapping_array[limit - 1] != 0) {
1220 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1221 for (i = 0; i < limit; i++) {
1222 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1226 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1227 if (asoc->nr_mapping_array[limit - 1]) {
1231 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1232 for (i = 0; i < limit; i++) {
1233 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1240 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1242 /* mapping array needs to grow */
1243 uint8_t *new_array1, *new_array2;
1246 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1247 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1248 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1249 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1250 /* can't get more, forget it */
1251 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1253 SCTP_FREE(new_array1, SCTP_M_MAP);
1256 SCTP_FREE(new_array2, SCTP_M_MAP);
1260 memset(new_array1, 0, new_size);
1261 memset(new_array2, 0, new_size);
1262 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1263 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1264 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1265 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1266 asoc->mapping_array = new_array1;
1267 asoc->nr_mapping_array = new_array2;
1268 asoc->mapping_array_size = new_size;
1274 sctp_iterator_work(struct sctp_iterator *it)
1276 int iteration_count = 0;
1279 struct sctp_inpcb *tinp;
1281 SCTP_INP_INFO_RLOCK();
1282 SCTP_ITERATOR_LOCK();
1283 sctp_it_ctl.cur_it = it;
1285 SCTP_INP_RLOCK(it->inp);
1286 SCTP_INP_DECR_REF(it->inp);
1288 if (it->inp == NULL) {
1289 /* iterator is complete */
1291 sctp_it_ctl.cur_it = NULL;
1292 SCTP_ITERATOR_UNLOCK();
1293 SCTP_INP_INFO_RUNLOCK();
1294 if (it->function_atend != NULL) {
1295 (*it->function_atend) (it->pointer, it->val);
1297 SCTP_FREE(it, SCTP_M_ITER);
1304 SCTP_INP_RLOCK(it->inp);
1306 while (((it->pcb_flags) &&
1307 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1308 ((it->pcb_features) &&
1309 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1310 /* endpoint flags or features don't match, so keep looking */
1311 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1312 SCTP_INP_RUNLOCK(it->inp);
1313 goto done_with_iterator;
1316 it->inp = LIST_NEXT(it->inp, sctp_list);
1317 SCTP_INP_RUNLOCK(tinp);
1318 if (it->inp == NULL) {
1319 goto done_with_iterator;
1321 SCTP_INP_RLOCK(it->inp);
1323 /* now go through each assoc which is in the desired state */
1324 if (it->done_current_ep == 0) {
1325 if (it->function_inp != NULL)
1326 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1327 it->done_current_ep = 1;
1329 if (it->stcb == NULL) {
1330 /* run the per instance function */
1331 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1333 if ((inp_skip) || it->stcb == NULL) {
1334 if (it->function_inp_end != NULL) {
1335 inp_skip = (*it->function_inp_end) (it->inp,
1339 SCTP_INP_RUNLOCK(it->inp);
1343 SCTP_TCB_LOCK(it->stcb);
1344 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1345 /* not in the right state... keep looking */
1346 SCTP_TCB_UNLOCK(it->stcb);
1349 /* see if we have limited out the iterator loop */
1351 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1352 /* Pause to let others grab the lock */
1353 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1354 SCTP_TCB_UNLOCK(it->stcb);
1355 SCTP_INP_INCR_REF(it->inp);
1356 SCTP_INP_RUNLOCK(it->inp);
1357 SCTP_ITERATOR_UNLOCK();
1358 SCTP_INP_INFO_RUNLOCK();
1359 SCTP_INP_INFO_RLOCK();
1360 SCTP_ITERATOR_LOCK();
1361 if (sctp_it_ctl.iterator_flags) {
1362 /* We won't be staying here */
1363 SCTP_INP_DECR_REF(it->inp);
1364 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1365 if (sctp_it_ctl.iterator_flags &
1366 SCTP_ITERATOR_STOP_CUR_IT) {
1367 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1368 goto done_with_iterator;
1370 if (sctp_it_ctl.iterator_flags &
1371 SCTP_ITERATOR_STOP_CUR_INP) {
1372 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1375 /* If we reach here huh? */
1376 SCTP_PRINTF("Unknown it ctl flag %x\n",
1377 sctp_it_ctl.iterator_flags);
1378 sctp_it_ctl.iterator_flags = 0;
1380 SCTP_INP_RLOCK(it->inp);
1381 SCTP_INP_DECR_REF(it->inp);
1382 SCTP_TCB_LOCK(it->stcb);
1383 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1384 iteration_count = 0;
1386 /* run function on this one */
1387 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1390 * we lie here, it really needs to have its own type but
1391 * first I must verify that this won't effect things :-0
1393 if (it->no_chunk_output == 0)
1394 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1396 SCTP_TCB_UNLOCK(it->stcb);
1398 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1399 if (it->stcb == NULL) {
1400 /* Run last function */
1401 if (it->function_inp_end != NULL) {
1402 inp_skip = (*it->function_inp_end) (it->inp,
1408 SCTP_INP_RUNLOCK(it->inp);
1410 /* done with all assocs on this endpoint, move on to next endpoint */
1411 it->done_current_ep = 0;
1412 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1415 it->inp = LIST_NEXT(it->inp, sctp_list);
1417 if (it->inp == NULL) {
1418 goto done_with_iterator;
1420 goto select_a_new_ep;
1424 sctp_iterator_worker(void)
1426 struct sctp_iterator *it, *nit;
1428 /* This function is called with the WQ lock in place */
1430 sctp_it_ctl.iterator_running = 1;
1431 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1432 /* now lets work on this one */
1433 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1434 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1435 CURVNET_SET(it->vn);
1436 sctp_iterator_work(it);
1438 SCTP_IPI_ITERATOR_WQ_LOCK();
1439 /* sa_ignore FREED_MEMORY */
1441 sctp_it_ctl.iterator_running = 0;
1447 sctp_handle_addr_wq(void)
1449 /* deal with the ADDR wq from the rtsock calls */
1450 struct sctp_laddr *wi, *nwi;
1451 struct sctp_asconf_iterator *asc;
1453 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1454 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1456 /* Try later, no memory */
1457 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1458 (struct sctp_inpcb *)NULL,
1459 (struct sctp_tcb *)NULL,
1460 (struct sctp_nets *)NULL);
1463 LIST_INIT(&asc->list_of_work);
1466 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1467 LIST_REMOVE(wi, sctp_nxt_addr);
1468 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1472 if (asc->cnt == 0) {
1473 SCTP_FREE(asc, SCTP_M_ASC_IT);
1477 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
1478 sctp_asconf_iterator_stcb,
1479 NULL, /* No ep end for boundall */
1480 SCTP_PCB_FLAGS_BOUNDALL,
1481 SCTP_PCB_ANY_FEATURES,
1482 SCTP_ASOC_ANY_STATE,
1484 sctp_asconf_iterator_end, NULL, 0);
1486 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
1488 * Freeing if we are stopping or put back on the
1491 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
1492 sctp_asconf_iterator_end(asc, 0);
1494 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
1495 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
1497 SCTP_FREE(asc, SCTP_M_ASC_IT);
1504 sctp_timeout_handler(void *t)
1506 struct sctp_inpcb *inp;
1507 struct sctp_tcb *stcb;
1508 struct sctp_nets *net;
1509 struct sctp_timer *tmr;
1510 struct mbuf *op_err;
1511 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1517 tmr = (struct sctp_timer *)t;
1518 inp = (struct sctp_inpcb *)tmr->ep;
1519 stcb = (struct sctp_tcb *)tmr->tcb;
1520 net = (struct sctp_nets *)tmr->net;
1521 CURVNET_SET((struct vnet *)tmr->vnet);
1524 #ifdef SCTP_AUDITING_ENABLED
1525 sctp_audit_log(0xF0, (uint8_t)tmr->type);
1526 sctp_auditing(3, inp, stcb, net);
1529 /* sanity checks... */
1530 if (tmr->self != (void *)tmr) {
1532 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1538 tmr->stopped_from = 0xa001;
1539 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1541 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1547 tmr->stopped_from = 0xa002;
1548 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1552 /* if this is an iterator timeout, get the struct and clear inp */
1553 tmr->stopped_from = 0xa003;
1555 SCTP_INP_INCR_REF(inp);
1556 if ((inp->sctp_socket == NULL) &&
1557 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1558 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1559 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1560 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1561 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1562 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1563 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1564 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1565 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))) {
1566 SCTP_INP_DECR_REF(inp);
1571 tmr->stopped_from = 0xa004;
1573 atomic_add_int(&stcb->asoc.refcnt, 1);
1574 if (stcb->asoc.state == 0) {
1575 atomic_add_int(&stcb->asoc.refcnt, -1);
1577 SCTP_INP_DECR_REF(inp);
1584 tmr->stopped_from = 0xa005;
1585 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type);
1586 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1588 SCTP_INP_DECR_REF(inp);
1591 atomic_add_int(&stcb->asoc.refcnt, -1);
1596 tmr->stopped_from = 0xa006;
1599 SCTP_TCB_LOCK(stcb);
1600 atomic_add_int(&stcb->asoc.refcnt, -1);
1601 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1602 ((stcb->asoc.state == 0) ||
1603 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1604 SCTP_TCB_UNLOCK(stcb);
1606 SCTP_INP_DECR_REF(inp);
1611 } else if (inp != NULL) {
1612 if (type != SCTP_TIMER_TYPE_INPKILL) {
1613 SCTP_INP_WLOCK(inp);
1616 SCTP_WQ_ADDR_LOCK();
1618 /* record in stopped what t-o occurred */
1619 tmr->stopped_from = type;
1621 /* mark as being serviced now */
1622 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1624 * Callout has been rescheduled.
1628 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1630 * Not active, so no action.
1634 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1636 /* call the handler for the appropriate timer type */
1638 case SCTP_TIMER_TYPE_ADDR_WQ:
1639 sctp_handle_addr_wq();
1641 case SCTP_TIMER_TYPE_SEND:
1642 if ((stcb == NULL) || (inp == NULL)) {
1645 SCTP_STAT_INCR(sctps_timodata);
1646 stcb->asoc.timodata++;
1647 stcb->asoc.num_send_timers_up--;
1648 if (stcb->asoc.num_send_timers_up < 0) {
1649 stcb->asoc.num_send_timers_up = 0;
1651 SCTP_TCB_LOCK_ASSERT(stcb);
1652 if (sctp_t3rxt_timer(inp, stcb, net)) {
1653 /* no need to unlock on tcb its gone */
1657 SCTP_TCB_LOCK_ASSERT(stcb);
1658 #ifdef SCTP_AUDITING_ENABLED
1659 sctp_auditing(4, inp, stcb, net);
1661 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1662 if ((stcb->asoc.num_send_timers_up == 0) &&
1663 (stcb->asoc.sent_queue_cnt > 0)) {
1664 struct sctp_tmit_chunk *chk;
1667 * safeguard. If there on some on the sent queue
1668 * somewhere but no timers running something is
1669 * wrong... so we start a timer on the first chunk
1670 * on the send queue on whatever net it is sent to.
1672 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1673 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1677 case SCTP_TIMER_TYPE_INIT:
1678 if ((stcb == NULL) || (inp == NULL)) {
1681 SCTP_STAT_INCR(sctps_timoinit);
1682 stcb->asoc.timoinit++;
1683 if (sctp_t1init_timer(inp, stcb, net)) {
1684 /* no need to unlock on tcb its gone */
1687 /* We do output but not here */
1690 case SCTP_TIMER_TYPE_RECV:
1691 if ((stcb == NULL) || (inp == NULL)) {
1694 SCTP_STAT_INCR(sctps_timosack);
1695 stcb->asoc.timosack++;
1696 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1697 #ifdef SCTP_AUDITING_ENABLED
1698 sctp_auditing(4, inp, stcb, net);
1700 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1702 case SCTP_TIMER_TYPE_SHUTDOWN:
1703 if ((stcb == NULL) || (inp == NULL)) {
1706 if (sctp_shutdown_timer(inp, stcb, net)) {
1707 /* no need to unlock on tcb its gone */
1710 SCTP_STAT_INCR(sctps_timoshutdown);
1711 stcb->asoc.timoshutdown++;
1712 #ifdef SCTP_AUDITING_ENABLED
1713 sctp_auditing(4, inp, stcb, net);
1715 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1717 case SCTP_TIMER_TYPE_HEARTBEAT:
1718 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1721 SCTP_STAT_INCR(sctps_timoheartbeat);
1722 stcb->asoc.timoheartbeat++;
1723 if (sctp_heartbeat_timer(inp, stcb, net)) {
1724 /* no need to unlock on tcb its gone */
1727 #ifdef SCTP_AUDITING_ENABLED
1728 sctp_auditing(4, inp, stcb, net);
1730 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1731 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1732 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1735 case SCTP_TIMER_TYPE_COOKIE:
1736 if ((stcb == NULL) || (inp == NULL)) {
1739 if (sctp_cookie_timer(inp, stcb, net)) {
1740 /* no need to unlock on tcb its gone */
1743 SCTP_STAT_INCR(sctps_timocookie);
1744 stcb->asoc.timocookie++;
1745 #ifdef SCTP_AUDITING_ENABLED
1746 sctp_auditing(4, inp, stcb, net);
1749 * We consider T3 and Cookie timer pretty much the same with
1750 * respect to where from in chunk_output.
1752 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1754 case SCTP_TIMER_TYPE_NEWCOOKIE:
1762 SCTP_STAT_INCR(sctps_timosecret);
1763 (void)SCTP_GETTIME_TIMEVAL(&tv);
1764 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1765 inp->sctp_ep.last_secret_number =
1766 inp->sctp_ep.current_secret_number;
1767 inp->sctp_ep.current_secret_number++;
1768 if (inp->sctp_ep.current_secret_number >=
1769 SCTP_HOW_MANY_SECRETS) {
1770 inp->sctp_ep.current_secret_number = 0;
1772 secret = (int)inp->sctp_ep.current_secret_number;
1773 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1774 inp->sctp_ep.secret_key[secret][i] =
1775 sctp_select_initial_TSN(&inp->sctp_ep);
1777 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1781 case SCTP_TIMER_TYPE_PATHMTURAISE:
1782 if ((stcb == NULL) || (inp == NULL)) {
1785 SCTP_STAT_INCR(sctps_timopathmtu);
1786 sctp_pathmtu_timer(inp, stcb, net);
1789 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1790 if ((stcb == NULL) || (inp == NULL)) {
1793 if (sctp_shutdownack_timer(inp, stcb, net)) {
1794 /* no need to unlock on tcb its gone */
1797 SCTP_STAT_INCR(sctps_timoshutdownack);
1798 stcb->asoc.timoshutdownack++;
1799 #ifdef SCTP_AUDITING_ENABLED
1800 sctp_auditing(4, inp, stcb, net);
1802 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1804 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1805 if ((stcb == NULL) || (inp == NULL)) {
1808 SCTP_STAT_INCR(sctps_timoshutdownguard);
1809 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
1810 "Shutdown guard timer expired");
1811 sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
1812 /* no need to unlock on tcb its gone */
1815 case SCTP_TIMER_TYPE_STRRESET:
1816 if ((stcb == NULL) || (inp == NULL)) {
1819 if (sctp_strreset_timer(inp, stcb, net)) {
1820 /* no need to unlock on tcb its gone */
1823 SCTP_STAT_INCR(sctps_timostrmrst);
1824 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1826 case SCTP_TIMER_TYPE_ASCONF:
1827 if ((stcb == NULL) || (inp == NULL)) {
1830 if (sctp_asconf_timer(inp, stcb, net)) {
1831 /* no need to unlock on tcb its gone */
1834 SCTP_STAT_INCR(sctps_timoasconf);
1835 #ifdef SCTP_AUDITING_ENABLED
1836 sctp_auditing(4, inp, stcb, net);
1838 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1840 case SCTP_TIMER_TYPE_PRIM_DELETED:
1841 if ((stcb == NULL) || (inp == NULL)) {
1844 sctp_delete_prim_timer(inp, stcb, net);
1845 SCTP_STAT_INCR(sctps_timodelprim);
1848 case SCTP_TIMER_TYPE_AUTOCLOSE:
1849 if ((stcb == NULL) || (inp == NULL)) {
1852 SCTP_STAT_INCR(sctps_timoautoclose);
1853 sctp_autoclose_timer(inp, stcb, net);
1854 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1857 case SCTP_TIMER_TYPE_ASOCKILL:
1858 if ((stcb == NULL) || (inp == NULL)) {
1861 SCTP_STAT_INCR(sctps_timoassockill);
1862 /* Can we free it yet? */
1863 SCTP_INP_DECR_REF(inp);
1864 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
1865 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1866 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1867 so = SCTP_INP_SO(inp);
1868 atomic_add_int(&stcb->asoc.refcnt, 1);
1869 SCTP_TCB_UNLOCK(stcb);
1870 SCTP_SOCKET_LOCK(so, 1);
1871 SCTP_TCB_LOCK(stcb);
1872 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1874 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
1875 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1876 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1877 SCTP_SOCKET_UNLOCK(so, 1);
1880 * free asoc, always unlocks (or destroy's) so prevent
1881 * duplicate unlock or unlock of a free mtx :-0
1885 case SCTP_TIMER_TYPE_INPKILL:
1886 SCTP_STAT_INCR(sctps_timoinpkill);
1891 * special case, take away our increment since WE are the
1894 SCTP_INP_DECR_REF(inp);
1895 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
1896 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1897 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1898 SCTP_CALLED_FROM_INPKILL_TIMER);
1902 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1906 #ifdef SCTP_AUDITING_ENABLED
1907 sctp_audit_log(0xF1, (uint8_t)type);
1909 sctp_auditing(5, inp, stcb, net);
1911 if ((did_output) && stcb) {
1913 * Now we need to clean up the control chunk chain if an
1914 * ECNE is on it. It must be marked as UNSENT again so next
1915 * call will continue to send it until such time that we get
1916 * a CWR, to remove it. It is, however, less likely that we
1917 * will find a ecn echo on the chain though.
1919 sctp_fix_ecn_echo(&stcb->asoc);
1923 SCTP_TCB_UNLOCK(stcb);
1924 } else if (inp != NULL) {
1925 SCTP_INP_WUNLOCK(inp);
1927 SCTP_WQ_ADDR_UNLOCK();
1932 SCTP_INP_DECR_REF(inp);
1935 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type);
1940 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1941 struct sctp_nets *net)
1944 struct sctp_timer *tmr;
1946 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1951 SCTP_TCB_LOCK_ASSERT(stcb);
1954 case SCTP_TIMER_TYPE_ADDR_WQ:
1955 /* Only 1 tick away :-) */
1956 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1957 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1959 case SCTP_TIMER_TYPE_SEND:
1960 /* Here we use the RTO timer */
1964 if ((stcb == NULL) || (net == NULL)) {
1967 tmr = &net->rxt_timer;
1968 if (net->RTO == 0) {
1969 rto_val = stcb->asoc.initial_rto;
1973 to_ticks = MSEC_TO_TICKS(rto_val);
1976 case SCTP_TIMER_TYPE_INIT:
1978 * Here we use the INIT timer default usually about 1
1981 if ((stcb == NULL) || (net == NULL)) {
1984 tmr = &net->rxt_timer;
1985 if (net->RTO == 0) {
1986 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1988 to_ticks = MSEC_TO_TICKS(net->RTO);
1991 case SCTP_TIMER_TYPE_RECV:
1993 * Here we use the Delayed-Ack timer value from the inp
1994 * ususually about 200ms.
1999 tmr = &stcb->asoc.dack_timer;
2000 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
2002 case SCTP_TIMER_TYPE_SHUTDOWN:
2003 /* Here we use the RTO of the destination. */
2004 if ((stcb == NULL) || (net == NULL)) {
2007 if (net->RTO == 0) {
2008 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2010 to_ticks = MSEC_TO_TICKS(net->RTO);
2012 tmr = &net->rxt_timer;
2014 case SCTP_TIMER_TYPE_HEARTBEAT:
2016 * the net is used here so that we can add in the RTO. Even
2017 * though we use a different timer. We also add the HB timer
2018 * PLUS a random jitter.
2020 if ((stcb == NULL) || (net == NULL)) {
2026 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2027 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2030 if (net->RTO == 0) {
2031 to_ticks = stcb->asoc.initial_rto;
2033 to_ticks = net->RTO;
2035 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2036 jitter = rndval % to_ticks;
2037 if (jitter >= (to_ticks >> 1)) {
2038 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
2040 to_ticks = to_ticks - jitter;
2042 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2043 !(net->dest_state & SCTP_ADDR_PF)) {
2044 to_ticks += net->heart_beat_delay;
2047 * Now we must convert the to_ticks that are now in
2050 to_ticks = MSEC_TO_TICKS(to_ticks);
2051 tmr = &net->hb_timer;
2054 case SCTP_TIMER_TYPE_COOKIE:
2056 * Here we can use the RTO timer from the network since one
2057 * RTT was compelete. If a retran happened then we will be
2058 * using the RTO initial value.
2060 if ((stcb == NULL) || (net == NULL)) {
2063 if (net->RTO == 0) {
2064 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2066 to_ticks = MSEC_TO_TICKS(net->RTO);
2068 tmr = &net->rxt_timer;
2070 case SCTP_TIMER_TYPE_NEWCOOKIE:
2072 * nothing needed but the endpoint here ususually about 60
2075 tmr = &inp->sctp_ep.signature_change;
2076 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2078 case SCTP_TIMER_TYPE_ASOCKILL:
2082 tmr = &stcb->asoc.strreset_timer;
2083 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2085 case SCTP_TIMER_TYPE_INPKILL:
2087 * The inp is setup to die. We re-use the signature_chage
2088 * timer since that has stopped and we are in the GONE
2091 tmr = &inp->sctp_ep.signature_change;
2092 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2094 case SCTP_TIMER_TYPE_PATHMTURAISE:
2096 * Here we use the value found in the EP for PMTU ususually
2099 if ((stcb == NULL) || (net == NULL)) {
2102 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2105 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2106 tmr = &net->pmtu_timer;
2108 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2109 /* Here we use the RTO of the destination */
2110 if ((stcb == NULL) || (net == NULL)) {
2113 if (net->RTO == 0) {
2114 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2116 to_ticks = MSEC_TO_TICKS(net->RTO);
2118 tmr = &net->rxt_timer;
2120 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2122 * Here we use the endpoints shutdown guard timer usually
2128 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2129 to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto);
2131 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2133 tmr = &stcb->asoc.shut_guard_timer;
2135 case SCTP_TIMER_TYPE_STRRESET:
2137 * Here the timer comes from the stcb but its value is from
2140 if ((stcb == NULL) || (net == NULL)) {
2143 if (net->RTO == 0) {
2144 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2146 to_ticks = MSEC_TO_TICKS(net->RTO);
2148 tmr = &stcb->asoc.strreset_timer;
2150 case SCTP_TIMER_TYPE_ASCONF:
2152 * Here the timer comes from the stcb but its value is from
2155 if ((stcb == NULL) || (net == NULL)) {
2158 if (net->RTO == 0) {
2159 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2161 to_ticks = MSEC_TO_TICKS(net->RTO);
2163 tmr = &stcb->asoc.asconf_timer;
2165 case SCTP_TIMER_TYPE_PRIM_DELETED:
2166 if ((stcb == NULL) || (net != NULL)) {
2169 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2170 tmr = &stcb->asoc.delete_prim_timer;
2172 case SCTP_TIMER_TYPE_AUTOCLOSE:
2176 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2178 * Really an error since stcb is NOT set to
2183 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2184 tmr = &stcb->asoc.autoclose_timer;
2187 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2192 if ((to_ticks <= 0) || (tmr == NULL)) {
2193 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2194 __func__, t_type, to_ticks, (void *)tmr);
2197 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2199 * we do NOT allow you to have it already running. if it is
2200 * we leave the current one up unchanged
2204 /* At this point we can proceed */
2205 if (t_type == SCTP_TIMER_TYPE_SEND) {
2206 stcb->asoc.num_send_timers_up++;
2208 tmr->stopped_from = 0;
2210 tmr->ep = (void *)inp;
2211 tmr->tcb = (void *)stcb;
2212 tmr->net = (void *)net;
2213 tmr->self = (void *)tmr;
2214 tmr->vnet = (void *)curvnet;
2215 tmr->ticks = sctp_get_tick_count();
2216 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2221 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2222 struct sctp_nets *net, uint32_t from)
2224 struct sctp_timer *tmr;
2226 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2232 SCTP_TCB_LOCK_ASSERT(stcb);
2235 case SCTP_TIMER_TYPE_ADDR_WQ:
2236 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2238 case SCTP_TIMER_TYPE_SEND:
2239 if ((stcb == NULL) || (net == NULL)) {
2242 tmr = &net->rxt_timer;
2244 case SCTP_TIMER_TYPE_INIT:
2245 if ((stcb == NULL) || (net == NULL)) {
2248 tmr = &net->rxt_timer;
2250 case SCTP_TIMER_TYPE_RECV:
2254 tmr = &stcb->asoc.dack_timer;
2256 case SCTP_TIMER_TYPE_SHUTDOWN:
2257 if ((stcb == NULL) || (net == NULL)) {
2260 tmr = &net->rxt_timer;
2262 case SCTP_TIMER_TYPE_HEARTBEAT:
2263 if ((stcb == NULL) || (net == NULL)) {
2266 tmr = &net->hb_timer;
2268 case SCTP_TIMER_TYPE_COOKIE:
2269 if ((stcb == NULL) || (net == NULL)) {
2272 tmr = &net->rxt_timer;
2274 case SCTP_TIMER_TYPE_NEWCOOKIE:
2275 /* nothing needed but the endpoint here */
2276 tmr = &inp->sctp_ep.signature_change;
2278 * We re-use the newcookie timer for the INP kill timer. We
2279 * must assure that we do not kill it by accident.
2282 case SCTP_TIMER_TYPE_ASOCKILL:
2284 * Stop the asoc kill timer.
2289 tmr = &stcb->asoc.strreset_timer;
2292 case SCTP_TIMER_TYPE_INPKILL:
2294 * The inp is setup to die. We re-use the signature_chage
2295 * timer since that has stopped and we are in the GONE
2298 tmr = &inp->sctp_ep.signature_change;
2300 case SCTP_TIMER_TYPE_PATHMTURAISE:
2301 if ((stcb == NULL) || (net == NULL)) {
2304 tmr = &net->pmtu_timer;
2306 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2307 if ((stcb == NULL) || (net == NULL)) {
2310 tmr = &net->rxt_timer;
2312 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2316 tmr = &stcb->asoc.shut_guard_timer;
2318 case SCTP_TIMER_TYPE_STRRESET:
2322 tmr = &stcb->asoc.strreset_timer;
2324 case SCTP_TIMER_TYPE_ASCONF:
2328 tmr = &stcb->asoc.asconf_timer;
2330 case SCTP_TIMER_TYPE_PRIM_DELETED:
2334 tmr = &stcb->asoc.delete_prim_timer;
2336 case SCTP_TIMER_TYPE_AUTOCLOSE:
2340 tmr = &stcb->asoc.autoclose_timer;
2343 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2350 if ((tmr->type != t_type) && tmr->type) {
2352 * Ok we have a timer that is under joint use. Cookie timer
2353 * per chance with the SEND timer. We therefore are NOT
2354 * running the timer that the caller wants stopped. So just
2359 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2360 stcb->asoc.num_send_timers_up--;
2361 if (stcb->asoc.num_send_timers_up < 0) {
2362 stcb->asoc.num_send_timers_up = 0;
2366 tmr->stopped_from = from;
2367 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2372 sctp_calculate_len(struct mbuf *m)
2379 tlen += SCTP_BUF_LEN(at);
2380 at = SCTP_BUF_NEXT(at);
2386 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2387 struct sctp_association *asoc, uint32_t mtu)
2390 * Reset the P-MTU size on this association, this involves changing
2391 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2392 * allow the DF flag to be cleared.
2394 struct sctp_tmit_chunk *chk;
2395 unsigned int eff_mtu, ovh;
2397 asoc->smallest_mtu = mtu;
2398 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2399 ovh = SCTP_MIN_OVERHEAD;
2401 ovh = SCTP_MIN_V4_OVERHEAD;
2403 eff_mtu = mtu - ovh;
2404 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2405 if (chk->send_size > eff_mtu) {
2406 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2409 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2410 if (chk->send_size > eff_mtu) {
2411 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2418 * given an association and starting time of the current RTT period return
2419 * RTO in number of msecs net should point to the current network
2423 sctp_calculate_rto(struct sctp_tcb *stcb,
2424 struct sctp_association *asoc,
2425 struct sctp_nets *net,
2426 struct timeval *old,
2430 * given an association and the starting time of the current RTT
2431 * period (in value1/value2) return RTO in number of msecs.
2433 int32_t rtt; /* RTT in ms */
2435 int first_measure = 0;
2438 /************************/
2439 /* 1. calculate new RTT */
2440 /************************/
2441 /* get the current time */
2442 if (stcb->asoc.use_precise_time) {
2443 (void)SCTP_GETPTIME_TIMEVAL(&now);
2445 (void)SCTP_GETTIME_TIMEVAL(&now);
2447 timevalsub(&now, old);
2448 /* store the current RTT in us */
2449 net->rtt = (uint64_t)1000000 *(uint64_t)now.tv_sec +
2450 (uint64_t)now.tv_usec;
2452 /* compute rtt in ms */
2453 rtt = (int32_t)(net->rtt / 1000);
2454 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2456 * Tell the CC module that a new update has just occurred
2459 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2462 * Do we need to determine the lan? We do this only on sacks i.e.
2463 * RTT being determined from data not non-data (HB/INIT->INITACK).
2465 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2466 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2467 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2468 net->lan_type = SCTP_LAN_INTERNET;
2470 net->lan_type = SCTP_LAN_LOCAL;
2473 /***************************/
2474 /* 2. update RTTVAR & SRTT */
2475 /***************************/
2477 * Compute the scaled average lastsa and the
2478 * scaled variance lastsv as described in van Jacobson
2479 * Paper "Congestion Avoidance and Control", Annex A.
2481 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2482 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2484 if (net->RTO_measured) {
2485 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2490 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2492 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2493 rto_logging(net, SCTP_LOG_RTTVAR);
2496 /* First RTO measurment */
2497 net->RTO_measured = 1;
2499 net->lastsa = rtt << SCTP_RTT_SHIFT;
2500 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2501 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2502 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2505 if (net->lastsv == 0) {
2506 net->lastsv = SCTP_CLOCK_GRANULARITY;
2508 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2509 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2510 (stcb->asoc.sat_network_lockout == 0)) {
2511 stcb->asoc.sat_network = 1;
2512 } else if ((!first_measure) && stcb->asoc.sat_network) {
2513 stcb->asoc.sat_network = 0;
2514 stcb->asoc.sat_network_lockout = 1;
2516 /* bound it, per C6/C7 in Section 5.3.1 */
2517 if (new_rto < stcb->asoc.minrto) {
2518 new_rto = stcb->asoc.minrto;
2520 if (new_rto > stcb->asoc.maxrto) {
2521 new_rto = stcb->asoc.maxrto;
2523 /* we are now returning the RTO */
2528 * return a pointer to a contiguous piece of data from the given mbuf chain
2529 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2530 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2531 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2534 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t *in_ptr)
2540 if ((off < 0) || (len <= 0))
2543 /* find the desired start location */
2544 while ((m != NULL) && (off > 0)) {
2545 if (off < SCTP_BUF_LEN(m))
2547 off -= SCTP_BUF_LEN(m);
2548 m = SCTP_BUF_NEXT(m);
2553 /* is the current mbuf large enough (eg. contiguous)? */
2554 if ((SCTP_BUF_LEN(m) - off) >= len) {
2555 return (mtod(m, caddr_t)+off);
2557 /* else, it spans more than one mbuf, so save a temp copy... */
2558 while ((m != NULL) && (len > 0)) {
2559 count = min(SCTP_BUF_LEN(m) - off, len);
2560 memcpy(ptr, mtod(m, caddr_t)+off, count);
2564 m = SCTP_BUF_NEXT(m);
2566 if ((m == NULL) && (len > 0))
2569 return ((caddr_t)in_ptr);
2575 struct sctp_paramhdr *
2576 sctp_get_next_param(struct mbuf *m,
2578 struct sctp_paramhdr *pull,
2581 /* This just provides a typed signature to Peter's Pull routine */
2582 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2588 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2590 struct mbuf *m_last;
2596 if (padlen <= M_TRAILINGSPACE(m)) {
2598 * The easy way. We hope the majority of the time we hit
2603 /* Hard way we must grow the mbuf chain */
2604 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2605 if (m_last == NULL) {
2608 SCTP_BUF_LEN(m_last) = 0;
2609 SCTP_BUF_NEXT(m_last) = NULL;
2610 SCTP_BUF_NEXT(m) = m_last;
2612 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2613 SCTP_BUF_LEN(m_last) += padlen;
2614 memset(dp, 0, padlen);
2619 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2621 /* find the last mbuf in chain and pad it */
2624 if (last_mbuf != NULL) {
2625 return (sctp_add_pad_tombuf(last_mbuf, padval));
2627 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2628 if (SCTP_BUF_NEXT(m_at) == NULL) {
2629 return (sctp_add_pad_tombuf(m_at, padval));
2637 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2638 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2639 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2644 struct mbuf *m_notify;
2645 struct sctp_assoc_change *sac;
2646 struct sctp_queued_to_read *control;
2647 unsigned int notif_len;
2650 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2657 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2658 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2659 if (abort != NULL) {
2660 abort_len = ntohs(abort->ch.chunk_length);
2662 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
2665 if (abort_len > SCTP_CHUNK_BUFFER_SIZE) {
2666 abort_len = SCTP_CHUNK_BUFFER_SIZE;
2671 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2672 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2673 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2674 notif_len += abort_len;
2676 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2677 if (m_notify == NULL) {
2678 /* Retry with smaller value. */
2679 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2680 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2681 if (m_notify == NULL) {
2685 SCTP_BUF_NEXT(m_notify) = NULL;
2686 sac = mtod(m_notify, struct sctp_assoc_change *);
2687 memset(sac, 0, notif_len);
2688 sac->sac_type = SCTP_ASSOC_CHANGE;
2690 sac->sac_length = sizeof(struct sctp_assoc_change);
2691 sac->sac_state = state;
2692 sac->sac_error = error;
2693 /* XXX verify these stream counts */
2694 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2695 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2696 sac->sac_assoc_id = sctp_get_associd(stcb);
2697 if (notif_len > sizeof(struct sctp_assoc_change)) {
2698 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2700 if (stcb->asoc.prsctp_supported == 1) {
2701 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2703 if (stcb->asoc.auth_supported == 1) {
2704 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2706 if (stcb->asoc.asconf_supported == 1) {
2707 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2709 if (stcb->asoc.idata_supported == 1) {
2710 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
2712 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2713 if (stcb->asoc.reconfig_supported == 1) {
2714 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2716 sac->sac_length += i;
2717 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2718 memcpy(sac->sac_info, abort, abort_len);
2719 sac->sac_length += abort_len;
2722 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2723 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2724 0, 0, stcb->asoc.context, 0, 0, 0,
2726 if (control != NULL) {
2727 control->length = SCTP_BUF_LEN(m_notify);
2728 control->spec_flags = M_NOTIFICATION;
2729 /* not that we need this */
2730 control->tail_mbuf = m_notify;
2731 sctp_add_to_readq(stcb->sctp_ep, stcb,
2733 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2736 sctp_m_freem(m_notify);
2740 * For 1-to-1 style sockets, we send up and error when an ABORT
2744 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2745 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2746 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2747 SOCK_LOCK(stcb->sctp_socket);
2749 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2750 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2751 stcb->sctp_socket->so_error = ECONNREFUSED;
2753 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2754 stcb->sctp_socket->so_error = ECONNRESET;
2757 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2758 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2759 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2760 stcb->sctp_socket->so_error = ETIMEDOUT;
2762 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2763 stcb->sctp_socket->so_error = ECONNABORTED;
2767 /* Wake ANY sleepers */
2768 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2769 so = SCTP_INP_SO(stcb->sctp_ep);
2771 atomic_add_int(&stcb->asoc.refcnt, 1);
2772 SCTP_TCB_UNLOCK(stcb);
2773 SCTP_SOCKET_LOCK(so, 1);
2774 SCTP_TCB_LOCK(stcb);
2775 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2776 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2777 SCTP_SOCKET_UNLOCK(so, 1);
2782 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2783 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2784 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2785 socantrcvmore_locked(stcb->sctp_socket);
2787 sorwakeup(stcb->sctp_socket);
2788 sowwakeup(stcb->sctp_socket);
2789 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2791 SCTP_SOCKET_UNLOCK(so, 1);
2797 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2798 struct sockaddr *sa, uint32_t error, int so_locked
2799 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2804 struct mbuf *m_notify;
2805 struct sctp_paddr_change *spc;
2806 struct sctp_queued_to_read *control;
2808 if ((stcb == NULL) ||
2809 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2810 /* event not enabled */
2813 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2814 if (m_notify == NULL)
2816 SCTP_BUF_LEN(m_notify) = 0;
2817 spc = mtod(m_notify, struct sctp_paddr_change *);
2818 memset(spc, 0, sizeof(struct sctp_paddr_change));
2819 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2821 spc->spc_length = sizeof(struct sctp_paddr_change);
2822 switch (sa->sa_family) {
2826 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
2827 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
2828 (struct sockaddr_in6 *)&spc->spc_aaddr);
2830 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2833 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2840 struct sockaddr_in6 *sin6;
2842 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2844 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2845 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2846 if (sin6->sin6_scope_id == 0) {
2847 /* recover scope_id for user */
2848 (void)sa6_recoverscope(sin6);
2850 /* clear embedded scope_id for user */
2851 in6_clearscope(&sin6->sin6_addr);
2861 spc->spc_state = state;
2862 spc->spc_error = error;
2863 spc->spc_assoc_id = sctp_get_associd(stcb);
2865 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2866 SCTP_BUF_NEXT(m_notify) = NULL;
2868 /* append to socket */
2869 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2870 0, 0, stcb->asoc.context, 0, 0, 0,
2872 if (control == NULL) {
2874 sctp_m_freem(m_notify);
2877 control->length = SCTP_BUF_LEN(m_notify);
2878 control->spec_flags = M_NOTIFICATION;
2879 /* not that we need this */
2880 control->tail_mbuf = m_notify;
2881 sctp_add_to_readq(stcb->sctp_ep, stcb,
2883 &stcb->sctp_socket->so_rcv, 1,
2884 SCTP_READ_LOCK_NOT_HELD,
2890 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2891 struct sctp_tmit_chunk *chk, int so_locked
2892 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2897 struct mbuf *m_notify;
2898 struct sctp_send_failed *ssf;
2899 struct sctp_send_failed_event *ssfe;
2900 struct sctp_queued_to_read *control;
2901 struct sctp_chunkhdr *chkhdr;
2902 int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len;
2904 if ((stcb == NULL) ||
2905 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2906 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2907 /* event not enabled */
2910 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2911 notifhdr_len = sizeof(struct sctp_send_failed_event);
2913 notifhdr_len = sizeof(struct sctp_send_failed);
2915 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
2916 if (m_notify == NULL)
2919 SCTP_BUF_LEN(m_notify) = notifhdr_len;
2920 if (stcb->asoc.idata_supported) {
2921 chkhdr_len = sizeof(struct sctp_idata_chunk);
2923 chkhdr_len = sizeof(struct sctp_data_chunk);
2925 /* Use some defaults in case we can't access the chunk header */
2926 if (chk->send_size >= chkhdr_len) {
2927 payload_len = chk->send_size - chkhdr_len;
2932 if (chk->data != NULL) {
2933 chkhdr = mtod(chk->data, struct sctp_chunkhdr *);
2934 if (chkhdr != NULL) {
2935 chk_len = ntohs(chkhdr->chunk_length);
2936 if ((chk_len >= chkhdr_len) &&
2937 (chk->send_size >= chk_len) &&
2938 (chk->send_size - chk_len < 4)) {
2939 padding_len = chk->send_size - chk_len;
2940 payload_len = chk->send_size - chkhdr_len - padding_len;
2944 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2945 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2946 memset(ssfe, 0, notifhdr_len);
2947 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2949 ssfe->ssfe_flags = SCTP_DATA_SENT;
2951 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2953 ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len);
2954 ssfe->ssfe_error = error;
2955 /* not exactly what the user sent in, but should be close :) */
2956 ssfe->ssfe_info.snd_sid = chk->rec.data.sid;
2957 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2958 ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid;
2959 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2960 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2961 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2963 ssf = mtod(m_notify, struct sctp_send_failed *);
2964 memset(ssf, 0, notifhdr_len);
2965 ssf->ssf_type = SCTP_SEND_FAILED;
2967 ssf->ssf_flags = SCTP_DATA_SENT;
2969 ssf->ssf_flags = SCTP_DATA_UNSENT;
2971 ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len);
2972 ssf->ssf_error = error;
2973 /* not exactly what the user sent in, but should be close :) */
2974 ssf->ssf_info.sinfo_stream = chk->rec.data.sid;
2975 ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid;
2976 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2977 ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid;
2978 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2979 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2980 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2982 if (chk->data != NULL) {
2983 /* Trim off the sctp chunk header (it should be there) */
2984 if (chk->send_size == chkhdr_len + payload_len + padding_len) {
2985 m_adj(chk->data, chkhdr_len);
2986 m_adj(chk->data, -padding_len);
2987 sctp_mbuf_crush(chk->data);
2988 chk->send_size -= (chkhdr_len + padding_len);
2991 SCTP_BUF_NEXT(m_notify) = chk->data;
2992 /* Steal off the mbuf */
2995 * For this case, we check the actual socket buffer, since the assoc
2996 * is going away we don't want to overfill the socket buffer for a
2999 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3000 sctp_m_freem(m_notify);
3003 /* append to socket */
3004 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3005 0, 0, stcb->asoc.context, 0, 0, 0,
3007 if (control == NULL) {
3009 sctp_m_freem(m_notify);
3012 control->length = SCTP_BUF_LEN(m_notify);
3013 control->spec_flags = M_NOTIFICATION;
3014 /* not that we need this */
3015 control->tail_mbuf = m_notify;
3016 sctp_add_to_readq(stcb->sctp_ep, stcb,
3018 &stcb->sctp_socket->so_rcv, 1,
3019 SCTP_READ_LOCK_NOT_HELD,
3025 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3026 struct sctp_stream_queue_pending *sp, int so_locked
3027 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3032 struct mbuf *m_notify;
3033 struct sctp_send_failed *ssf;
3034 struct sctp_send_failed_event *ssfe;
3035 struct sctp_queued_to_read *control;
3038 if ((stcb == NULL) ||
3039 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3040 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3041 /* event not enabled */
3044 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3045 notifhdr_len = sizeof(struct sctp_send_failed_event);
3047 notifhdr_len = sizeof(struct sctp_send_failed);
3049 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3050 if (m_notify == NULL) {
3054 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3055 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3056 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3057 memset(ssfe, 0, notifhdr_len);
3058 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3059 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3060 ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length);
3061 ssfe->ssfe_error = error;
3062 /* not exactly what the user sent in, but should be close :) */
3063 ssfe->ssfe_info.snd_sid = sp->sid;
3064 if (sp->some_taken) {
3065 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3067 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3069 ssfe->ssfe_info.snd_ppid = sp->ppid;
3070 ssfe->ssfe_info.snd_context = sp->context;
3071 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3072 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3074 ssf = mtod(m_notify, struct sctp_send_failed *);
3075 memset(ssf, 0, notifhdr_len);
3076 ssf->ssf_type = SCTP_SEND_FAILED;
3077 ssf->ssf_flags = SCTP_DATA_UNSENT;
3078 ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length);
3079 ssf->ssf_error = error;
3080 /* not exactly what the user sent in, but should be close :) */
3081 ssf->ssf_info.sinfo_stream = sp->sid;
3082 ssf->ssf_info.sinfo_ssn = 0;
3083 if (sp->some_taken) {
3084 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3086 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3088 ssf->ssf_info.sinfo_ppid = sp->ppid;
3089 ssf->ssf_info.sinfo_context = sp->context;
3090 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3091 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3093 SCTP_BUF_NEXT(m_notify) = sp->data;
3095 /* Steal off the mbuf */
3098 * For this case, we check the actual socket buffer, since the assoc
3099 * is going away we don't want to overfill the socket buffer for a
3102 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3103 sctp_m_freem(m_notify);
3106 /* append to socket */
3107 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3108 0, 0, stcb->asoc.context, 0, 0, 0,
3110 if (control == NULL) {
3112 sctp_m_freem(m_notify);
3115 control->length = SCTP_BUF_LEN(m_notify);
3116 control->spec_flags = M_NOTIFICATION;
3117 /* not that we need this */
3118 control->tail_mbuf = m_notify;
3119 sctp_add_to_readq(stcb->sctp_ep, stcb,
3121 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3127 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3129 struct mbuf *m_notify;
3130 struct sctp_adaptation_event *sai;
3131 struct sctp_queued_to_read *control;
3133 if ((stcb == NULL) ||
3134 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3135 /* event not enabled */
3138 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3139 if (m_notify == NULL)
3142 SCTP_BUF_LEN(m_notify) = 0;
3143 sai = mtod(m_notify, struct sctp_adaptation_event *);
3144 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3145 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3147 sai->sai_length = sizeof(struct sctp_adaptation_event);
3148 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3149 sai->sai_assoc_id = sctp_get_associd(stcb);
3151 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3152 SCTP_BUF_NEXT(m_notify) = NULL;
3154 /* append to socket */
3155 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3156 0, 0, stcb->asoc.context, 0, 0, 0,
3158 if (control == NULL) {
3160 sctp_m_freem(m_notify);
3163 control->length = SCTP_BUF_LEN(m_notify);
3164 control->spec_flags = M_NOTIFICATION;
3165 /* not that we need this */
3166 control->tail_mbuf = m_notify;
3167 sctp_add_to_readq(stcb->sctp_ep, stcb,
3169 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3172 /* This always must be called with the read-queue LOCKED in the INP */
3174 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3175 uint32_t val, int so_locked
3176 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3181 struct mbuf *m_notify;
3182 struct sctp_pdapi_event *pdapi;
3183 struct sctp_queued_to_read *control;
3186 if ((stcb == NULL) ||
3187 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3188 /* event not enabled */
3191 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3194 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3195 if (m_notify == NULL)
3198 SCTP_BUF_LEN(m_notify) = 0;
3199 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3200 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3201 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3202 pdapi->pdapi_flags = 0;
3203 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3204 pdapi->pdapi_indication = error;
3205 pdapi->pdapi_stream = (val >> 16);
3206 pdapi->pdapi_seq = (val & 0x0000ffff);
3207 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3209 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3210 SCTP_BUF_NEXT(m_notify) = NULL;
3211 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3212 0, 0, stcb->asoc.context, 0, 0, 0,
3214 if (control == NULL) {
3216 sctp_m_freem(m_notify);
3219 control->length = SCTP_BUF_LEN(m_notify);
3220 control->spec_flags = M_NOTIFICATION;
3221 /* not that we need this */
3222 control->tail_mbuf = m_notify;
3223 sb = &stcb->sctp_socket->so_rcv;
3224 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3225 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3227 sctp_sballoc(stcb, sb, m_notify);
3228 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3229 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3231 control->end_added = 1;
3232 if (stcb->asoc.control_pdapi)
3233 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3235 /* we really should not see this case */
3236 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3238 if (stcb->sctp_ep && stcb->sctp_socket) {
3239 /* This should always be the case */
3240 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3243 so = SCTP_INP_SO(stcb->sctp_ep);
3245 atomic_add_int(&stcb->asoc.refcnt, 1);
3246 SCTP_TCB_UNLOCK(stcb);
3247 SCTP_SOCKET_LOCK(so, 1);
3248 SCTP_TCB_LOCK(stcb);
3249 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3250 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3251 SCTP_SOCKET_UNLOCK(so, 1);
3256 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3257 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3259 SCTP_SOCKET_UNLOCK(so, 1);
3266 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3268 struct mbuf *m_notify;
3269 struct sctp_shutdown_event *sse;
3270 struct sctp_queued_to_read *control;
3273 * For TCP model AND UDP connected sockets we will send an error up
3274 * when an SHUTDOWN completes
3276 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3277 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3278 /* mark socket closed for read/write and wakeup! */
3279 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3282 so = SCTP_INP_SO(stcb->sctp_ep);
3283 atomic_add_int(&stcb->asoc.refcnt, 1);
3284 SCTP_TCB_UNLOCK(stcb);
3285 SCTP_SOCKET_LOCK(so, 1);
3286 SCTP_TCB_LOCK(stcb);
3287 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3288 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3289 SCTP_SOCKET_UNLOCK(so, 1);
3293 socantsendmore(stcb->sctp_socket);
3294 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3295 SCTP_SOCKET_UNLOCK(so, 1);
3298 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3299 /* event not enabled */
3302 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3303 if (m_notify == NULL)
3306 sse = mtod(m_notify, struct sctp_shutdown_event *);
3307 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3308 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3310 sse->sse_length = sizeof(struct sctp_shutdown_event);
3311 sse->sse_assoc_id = sctp_get_associd(stcb);
3313 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3314 SCTP_BUF_NEXT(m_notify) = NULL;
3316 /* append to socket */
3317 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3318 0, 0, stcb->asoc.context, 0, 0, 0,
3320 if (control == NULL) {
3322 sctp_m_freem(m_notify);
3325 control->length = SCTP_BUF_LEN(m_notify);
3326 control->spec_flags = M_NOTIFICATION;
3327 /* not that we need this */
3328 control->tail_mbuf = m_notify;
3329 sctp_add_to_readq(stcb->sctp_ep, stcb,
3331 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3335 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3337 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3342 struct mbuf *m_notify;
3343 struct sctp_sender_dry_event *event;
3344 struct sctp_queued_to_read *control;
3346 if ((stcb == NULL) ||
3347 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3348 /* event not enabled */
3351 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3352 if (m_notify == NULL) {
3356 SCTP_BUF_LEN(m_notify) = 0;
3357 event = mtod(m_notify, struct sctp_sender_dry_event *);
3358 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3359 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3360 event->sender_dry_flags = 0;
3361 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3362 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3364 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3365 SCTP_BUF_NEXT(m_notify) = NULL;
3367 /* append to socket */
3368 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3369 0, 0, stcb->asoc.context, 0, 0, 0,
3371 if (control == NULL) {
3373 sctp_m_freem(m_notify);
3376 control->length = SCTP_BUF_LEN(m_notify);
3377 control->spec_flags = M_NOTIFICATION;
3378 /* not that we need this */
3379 control->tail_mbuf = m_notify;
3380 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3381 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3386 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3388 struct mbuf *m_notify;
3389 struct sctp_queued_to_read *control;
3390 struct sctp_stream_change_event *stradd;
3392 if ((stcb == NULL) ||
3393 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3394 /* event not enabled */
3397 if ((stcb->asoc.peer_req_out) && flag) {
3398 /* Peer made the request, don't tell the local user */
3399 stcb->asoc.peer_req_out = 0;
3402 stcb->asoc.peer_req_out = 0;
3403 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3404 if (m_notify == NULL)
3407 SCTP_BUF_LEN(m_notify) = 0;
3408 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3409 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3410 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3411 stradd->strchange_flags = flag;
3412 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3413 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3414 stradd->strchange_instrms = numberin;
3415 stradd->strchange_outstrms = numberout;
3416 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3417 SCTP_BUF_NEXT(m_notify) = NULL;
3418 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3420 sctp_m_freem(m_notify);
3423 /* append to socket */
3424 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3425 0, 0, stcb->asoc.context, 0, 0, 0,
3427 if (control == NULL) {
3429 sctp_m_freem(m_notify);
3432 control->length = SCTP_BUF_LEN(m_notify);
3433 control->spec_flags = M_NOTIFICATION;
3434 /* not that we need this */
3435 control->tail_mbuf = m_notify;
3436 sctp_add_to_readq(stcb->sctp_ep, stcb,
3438 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3442 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3444 struct mbuf *m_notify;
3445 struct sctp_queued_to_read *control;
3446 struct sctp_assoc_reset_event *strasoc;
3448 if ((stcb == NULL) ||
3449 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3450 /* event not enabled */
3453 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3454 if (m_notify == NULL)
3457 SCTP_BUF_LEN(m_notify) = 0;
3458 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3459 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3460 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3461 strasoc->assocreset_flags = flag;
3462 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3463 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3464 strasoc->assocreset_local_tsn = sending_tsn;
3465 strasoc->assocreset_remote_tsn = recv_tsn;
3466 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3467 SCTP_BUF_NEXT(m_notify) = NULL;
3468 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3470 sctp_m_freem(m_notify);
3473 /* append to socket */
3474 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3475 0, 0, stcb->asoc.context, 0, 0, 0,
3477 if (control == NULL) {
3479 sctp_m_freem(m_notify);
3482 control->length = SCTP_BUF_LEN(m_notify);
3483 control->spec_flags = M_NOTIFICATION;
3484 /* not that we need this */
3485 control->tail_mbuf = m_notify;
3486 sctp_add_to_readq(stcb->sctp_ep, stcb,
3488 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3494 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3495 int number_entries, uint16_t *list, int flag)
3497 struct mbuf *m_notify;
3498 struct sctp_queued_to_read *control;
3499 struct sctp_stream_reset_event *strreset;
3502 if ((stcb == NULL) ||
3503 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3504 /* event not enabled */
3507 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3508 if (m_notify == NULL)
3511 SCTP_BUF_LEN(m_notify) = 0;
3512 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3513 if (len > M_TRAILINGSPACE(m_notify)) {
3514 /* never enough room */
3515 sctp_m_freem(m_notify);
3518 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3519 memset(strreset, 0, len);
3520 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3521 strreset->strreset_flags = flag;
3522 strreset->strreset_length = len;
3523 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3524 if (number_entries) {
3527 for (i = 0; i < number_entries; i++) {
3528 strreset->strreset_stream_list[i] = ntohs(list[i]);
3531 SCTP_BUF_LEN(m_notify) = len;
3532 SCTP_BUF_NEXT(m_notify) = NULL;
3533 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3535 sctp_m_freem(m_notify);
3538 /* append to socket */
3539 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3540 0, 0, stcb->asoc.context, 0, 0, 0,
3542 if (control == NULL) {
3544 sctp_m_freem(m_notify);
3547 control->length = SCTP_BUF_LEN(m_notify);
3548 control->spec_flags = M_NOTIFICATION;
3549 /* not that we need this */
3550 control->tail_mbuf = m_notify;
3551 sctp_add_to_readq(stcb->sctp_ep, stcb,
3553 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3558 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3560 struct mbuf *m_notify;
3561 struct sctp_remote_error *sre;
3562 struct sctp_queued_to_read *control;
3563 unsigned int notif_len;
3566 if ((stcb == NULL) ||
3567 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3570 if (chunk != NULL) {
3571 chunk_len = ntohs(chunk->ch.chunk_length);
3573 * Only SCTP_CHUNK_BUFFER_SIZE are guaranteed to be
3576 if (chunk_len > SCTP_CHUNK_BUFFER_SIZE) {
3577 chunk_len = SCTP_CHUNK_BUFFER_SIZE;
3582 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
3583 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3584 if (m_notify == NULL) {
3585 /* Retry with smaller value. */
3586 notif_len = (unsigned int)sizeof(struct sctp_remote_error);
3587 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3588 if (m_notify == NULL) {
3592 SCTP_BUF_NEXT(m_notify) = NULL;
3593 sre = mtod(m_notify, struct sctp_remote_error *);
3594 memset(sre, 0, notif_len);
3595 sre->sre_type = SCTP_REMOTE_ERROR;
3597 sre->sre_length = sizeof(struct sctp_remote_error);
3598 sre->sre_error = error;
3599 sre->sre_assoc_id = sctp_get_associd(stcb);
3600 if (notif_len > sizeof(struct sctp_remote_error)) {
3601 memcpy(sre->sre_data, chunk, chunk_len);
3602 sre->sre_length += chunk_len;
3604 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3605 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3606 0, 0, stcb->asoc.context, 0, 0, 0,
3608 if (control != NULL) {
3609 control->length = SCTP_BUF_LEN(m_notify);
3610 control->spec_flags = M_NOTIFICATION;
3611 /* not that we need this */
3612 control->tail_mbuf = m_notify;
3613 sctp_add_to_readq(stcb->sctp_ep, stcb,
3615 &stcb->sctp_socket->so_rcv, 1,
3616 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3618 sctp_m_freem(m_notify);
3624 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3625 uint32_t error, void *data, int so_locked
3626 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3631 if ((stcb == NULL) ||
3632 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3633 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3634 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3635 /* If the socket is gone we are out of here */
3638 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3641 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3642 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3643 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3644 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3645 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3646 /* Don't report these in front states */
3650 switch (notification) {
3651 case SCTP_NOTIFY_ASSOC_UP:
3652 if (stcb->asoc.assoc_up_sent == 0) {
3653 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3654 stcb->asoc.assoc_up_sent = 1;
3656 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3657 sctp_notify_adaptation_layer(stcb);
3659 if (stcb->asoc.auth_supported == 0) {
3660 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3664 case SCTP_NOTIFY_ASSOC_DOWN:
3665 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3667 case SCTP_NOTIFY_INTERFACE_DOWN:
3669 struct sctp_nets *net;
3671 net = (struct sctp_nets *)data;
3672 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3673 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3676 case SCTP_NOTIFY_INTERFACE_UP:
3678 struct sctp_nets *net;
3680 net = (struct sctp_nets *)data;
3681 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3682 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3685 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3687 struct sctp_nets *net;
3689 net = (struct sctp_nets *)data;
3690 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3691 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3694 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3695 sctp_notify_send_failed2(stcb, error,
3696 (struct sctp_stream_queue_pending *)data, so_locked);
3698 case SCTP_NOTIFY_SENT_DG_FAIL:
3699 sctp_notify_send_failed(stcb, 1, error,
3700 (struct sctp_tmit_chunk *)data, so_locked);
3702 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3703 sctp_notify_send_failed(stcb, 0, error,
3704 (struct sctp_tmit_chunk *)data, so_locked);
3706 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3710 val = *((uint32_t *)data);
3712 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3715 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3716 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3717 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3718 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3720 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3723 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3724 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3725 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3726 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3728 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3731 case SCTP_NOTIFY_ASSOC_RESTART:
3732 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3733 if (stcb->asoc.auth_supported == 0) {
3734 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3738 case SCTP_NOTIFY_STR_RESET_SEND:
3739 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_OUTGOING_SSN);
3741 case SCTP_NOTIFY_STR_RESET_RECV:
3742 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_INCOMING);
3744 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3745 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3746 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3748 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3749 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3750 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3752 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3753 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3754 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3756 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3757 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3758 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3760 case SCTP_NOTIFY_ASCONF_ADD_IP:
3761 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3764 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3765 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3768 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3769 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3772 case SCTP_NOTIFY_PEER_SHUTDOWN:
3773 sctp_notify_shutdown_event(stcb);
3775 case SCTP_NOTIFY_AUTH_NEW_KEY:
3776 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3777 (uint16_t)(uintptr_t)data,
3780 case SCTP_NOTIFY_AUTH_FREE_KEY:
3781 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3782 (uint16_t)(uintptr_t)data,
3785 case SCTP_NOTIFY_NO_PEER_AUTH:
3786 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3787 (uint16_t)(uintptr_t)data,
3790 case SCTP_NOTIFY_SENDER_DRY:
3791 sctp_notify_sender_dry_event(stcb, so_locked);
3793 case SCTP_NOTIFY_REMOTE_ERROR:
3794 sctp_notify_remote_error(stcb, error, data);
3797 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3798 __func__, notification, notification);
3804 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3805 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3810 struct sctp_association *asoc;
3811 struct sctp_stream_out *outs;
3812 struct sctp_tmit_chunk *chk, *nchk;
3813 struct sctp_stream_queue_pending *sp, *nsp;
3820 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3821 /* already being freed */
3824 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3825 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3826 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3829 /* now through all the gunk freeing chunks */
3830 if (holds_lock == 0) {
3831 SCTP_TCB_SEND_LOCK(stcb);
3833 /* sent queue SHOULD be empty */
3834 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3835 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3836 asoc->sent_queue_cnt--;
3837 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3838 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
3839 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
3842 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
3846 if (chk->data != NULL) {
3847 sctp_free_bufspace(stcb, asoc, chk, 1);
3848 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3849 error, chk, so_locked);
3851 sctp_m_freem(chk->data);
3855 sctp_free_a_chunk(stcb, chk, so_locked);
3856 /* sa_ignore FREED_MEMORY */
3858 /* pending send queue SHOULD be empty */
3859 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3860 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3861 asoc->send_queue_cnt--;
3862 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
3863 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
3866 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
3869 if (chk->data != NULL) {
3870 sctp_free_bufspace(stcb, asoc, chk, 1);
3871 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3872 error, chk, so_locked);
3874 sctp_m_freem(chk->data);
3878 sctp_free_a_chunk(stcb, chk, so_locked);
3879 /* sa_ignore FREED_MEMORY */
3881 for (i = 0; i < asoc->streamoutcnt; i++) {
3882 /* For each stream */
3883 outs = &asoc->strmout[i];
3884 /* clean up any sends there */
3885 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3886 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
3887 TAILQ_REMOVE(&outs->outqueue, sp, next);
3888 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, holds_lock);
3889 sctp_free_spbufspace(stcb, asoc, sp);
3891 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3892 error, (void *)sp, so_locked);
3894 sctp_m_freem(sp->data);
3896 sp->tail_mbuf = NULL;
3901 sctp_free_remote_addr(sp->net);
3904 /* Free the chunk */
3905 sctp_free_a_strmoq(stcb, sp, so_locked);
3906 /* sa_ignore FREED_MEMORY */
3910 if (holds_lock == 0) {
3911 SCTP_TCB_SEND_UNLOCK(stcb);
3916 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3917 struct sctp_abort_chunk *abort, int so_locked
3918 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3926 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3927 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3928 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3929 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3931 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3932 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3933 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3936 /* Tell them we lost the asoc */
3937 sctp_report_all_outbound(stcb, error, 1, so_locked);
3939 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3941 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3946 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3947 struct mbuf *m, int iphlen,
3948 struct sockaddr *src, struct sockaddr *dst,
3949 struct sctphdr *sh, struct mbuf *op_err,
3950 uint8_t mflowtype, uint32_t mflowid,
3951 uint32_t vrf_id, uint16_t port)
3954 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3960 vtag = stcb->asoc.peer_vtag;
3961 vrf_id = stcb->asoc.vrf_id;
3963 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3964 mflowtype, mflowid, inp->fibnum,
3967 /* We have a TCB to abort, send notification too */
3968 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3969 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3970 /* Ok, now lets free it */
3971 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3972 so = SCTP_INP_SO(inp);
3973 atomic_add_int(&stcb->asoc.refcnt, 1);
3974 SCTP_TCB_UNLOCK(stcb);
3975 SCTP_SOCKET_LOCK(so, 1);
3976 SCTP_TCB_LOCK(stcb);
3977 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3979 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3980 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3981 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3982 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3984 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
3985 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
3986 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3987 SCTP_SOCKET_UNLOCK(so, 1);
3991 #ifdef SCTP_ASOCLOG_OF_TSNS
3993 sctp_print_out_track_log(struct sctp_tcb *stcb)
3998 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
3999 SCTP_PRINTF("IN bound TSN log-aaa\n");
4000 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4001 SCTP_PRINTF("None rcvd\n");
4004 if (stcb->asoc.tsn_in_wrapped) {
4005 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4006 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4007 stcb->asoc.in_tsnlog[i].tsn,
4008 stcb->asoc.in_tsnlog[i].strm,
4009 stcb->asoc.in_tsnlog[i].seq,
4010 stcb->asoc.in_tsnlog[i].flgs,
4011 stcb->asoc.in_tsnlog[i].sz);
4014 if (stcb->asoc.tsn_in_at) {
4015 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4016 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4017 stcb->asoc.in_tsnlog[i].tsn,
4018 stcb->asoc.in_tsnlog[i].strm,
4019 stcb->asoc.in_tsnlog[i].seq,
4020 stcb->asoc.in_tsnlog[i].flgs,
4021 stcb->asoc.in_tsnlog[i].sz);
4025 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4026 if ((stcb->asoc.tsn_out_at == 0) &&
4027 (stcb->asoc.tsn_out_wrapped == 0)) {
4028 SCTP_PRINTF("None sent\n");
4030 if (stcb->asoc.tsn_out_wrapped) {
4031 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4032 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4033 stcb->asoc.out_tsnlog[i].tsn,
4034 stcb->asoc.out_tsnlog[i].strm,
4035 stcb->asoc.out_tsnlog[i].seq,
4036 stcb->asoc.out_tsnlog[i].flgs,
4037 stcb->asoc.out_tsnlog[i].sz);
4040 if (stcb->asoc.tsn_out_at) {
4041 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4042 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4043 stcb->asoc.out_tsnlog[i].tsn,
4044 stcb->asoc.out_tsnlog[i].strm,
4045 stcb->asoc.out_tsnlog[i].seq,
4046 stcb->asoc.out_tsnlog[i].flgs,
4047 stcb->asoc.out_tsnlog[i].sz);
4055 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4056 struct mbuf *op_err,
4058 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4063 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4067 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4068 so = SCTP_INP_SO(inp);
4071 /* Got to have a TCB */
4072 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4073 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4074 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4075 SCTP_CALLED_DIRECTLY_NOCMPSET);
4080 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
4082 /* notify the peer */
4083 sctp_send_abort_tcb(stcb, op_err, so_locked);
4084 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4085 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
4086 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4087 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4089 /* notify the ulp */
4090 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4091 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4093 /* now free the asoc */
4094 #ifdef SCTP_ASOCLOG_OF_TSNS
4095 sctp_print_out_track_log(stcb);
4097 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4099 atomic_add_int(&stcb->asoc.refcnt, 1);
4100 SCTP_TCB_UNLOCK(stcb);
4101 SCTP_SOCKET_LOCK(so, 1);
4102 SCTP_TCB_LOCK(stcb);
4103 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4106 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4107 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4108 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4110 SCTP_SOCKET_UNLOCK(so, 1);
4116 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4117 struct sockaddr *src, struct sockaddr *dst,
4118 struct sctphdr *sh, struct sctp_inpcb *inp,
4120 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4121 uint32_t vrf_id, uint16_t port)
4123 struct sctp_chunkhdr *ch, chunk_buf;
4124 unsigned int chk_length;
4125 int contains_init_chunk;
4127 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4128 /* Generate a TO address for future reference */
4129 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4130 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4131 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4132 SCTP_CALLED_DIRECTLY_NOCMPSET);
4135 contains_init_chunk = 0;
4136 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4137 sizeof(*ch), (uint8_t *)&chunk_buf);
4138 while (ch != NULL) {
4139 chk_length = ntohs(ch->chunk_length);
4140 if (chk_length < sizeof(*ch)) {
4141 /* break to abort land */
4144 switch (ch->chunk_type) {
4146 contains_init_chunk = 1;
4148 case SCTP_PACKET_DROPPED:
4149 /* we don't respond to pkt-dropped */
4151 case SCTP_ABORT_ASSOCIATION:
4152 /* we don't respond with an ABORT to an ABORT */
4154 case SCTP_SHUTDOWN_COMPLETE:
4156 * we ignore it since we are not waiting for it and
4160 case SCTP_SHUTDOWN_ACK:
4161 sctp_send_shutdown_complete2(src, dst, sh,
4162 mflowtype, mflowid, fibnum,
4168 offset += SCTP_SIZE32(chk_length);
4169 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4170 sizeof(*ch), (uint8_t *)&chunk_buf);
4172 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4173 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4174 (contains_init_chunk == 0))) {
4175 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4176 mflowtype, mflowid, fibnum,
4182 * check the inbound datagram to make sure there is not an abort inside it,
4183 * if there is return 1, else return 0.
4186 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtagfill)
4188 struct sctp_chunkhdr *ch;
4189 struct sctp_init_chunk *init_chk, chunk_buf;
4191 unsigned int chk_length;
4193 offset = iphlen + sizeof(struct sctphdr);
4194 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4195 (uint8_t *)&chunk_buf);
4196 while (ch != NULL) {
4197 chk_length = ntohs(ch->chunk_length);
4198 if (chk_length < sizeof(*ch)) {
4199 /* packet is probably corrupt */
4202 /* we seem to be ok, is it an abort? */
4203 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4204 /* yep, tell them */
4207 if (ch->chunk_type == SCTP_INITIATION) {
4208 /* need to update the Vtag */
4209 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4210 offset, sizeof(*init_chk), (uint8_t *)&chunk_buf);
4211 if (init_chk != NULL) {
4212 *vtagfill = ntohl(init_chk->init.initiate_tag);
4215 /* Nope, move to the next chunk */
4216 offset += SCTP_SIZE32(chk_length);
4217 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4218 sizeof(*ch), (uint8_t *)&chunk_buf);
4224 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4225 * set (i.e. it's 0) so, create this function to compare link local scopes
4229 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4231 struct sockaddr_in6 a, b;
4237 if (a.sin6_scope_id == 0)
4238 if (sa6_recoverscope(&a)) {
4239 /* can't get scope, so can't match */
4242 if (b.sin6_scope_id == 0)
4243 if (sa6_recoverscope(&b)) {
4244 /* can't get scope, so can't match */
4247 if (a.sin6_scope_id != b.sin6_scope_id)
4254 * returns a sockaddr_in6 with embedded scope recovered and removed
4256 struct sockaddr_in6 *
4257 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4259 /* check and strip embedded scope junk */
4260 if (addr->sin6_family == AF_INET6) {
4261 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4262 if (addr->sin6_scope_id == 0) {
4264 if (!sa6_recoverscope(store)) {
4265 /* use the recovered scope */
4269 /* else, return the original "to" addr */
4270 in6_clearscope(&addr->sin6_addr);
4279 * are the two addresses the same? currently a "scopeless" check returns: 1
4283 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4287 if (sa1 == NULL || sa2 == NULL)
4290 /* must be the same family */
4291 if (sa1->sa_family != sa2->sa_family)
4294 switch (sa1->sa_family) {
4298 /* IPv6 addresses */
4299 struct sockaddr_in6 *sin6_1, *sin6_2;
4301 sin6_1 = (struct sockaddr_in6 *)sa1;
4302 sin6_2 = (struct sockaddr_in6 *)sa2;
4303 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4310 /* IPv4 addresses */
4311 struct sockaddr_in *sin_1, *sin_2;
4313 sin_1 = (struct sockaddr_in *)sa1;
4314 sin_2 = (struct sockaddr_in *)sa2;
4315 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4319 /* we don't do these... */
4325 sctp_print_address(struct sockaddr *sa)
4328 char ip6buf[INET6_ADDRSTRLEN];
4331 switch (sa->sa_family) {
4335 struct sockaddr_in6 *sin6;
4337 sin6 = (struct sockaddr_in6 *)sa;
4338 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4339 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4340 ntohs(sin6->sin6_port),
4341 sin6->sin6_scope_id);
4348 struct sockaddr_in *sin;
4351 sin = (struct sockaddr_in *)sa;
4352 p = (unsigned char *)&sin->sin_addr;
4353 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4354 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4365 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4366 struct sctp_inpcb *new_inp,
4367 struct sctp_tcb *stcb,
4371 * go through our old INP and pull off any control structures that
4372 * belong to stcb and move then to the new inp.
4374 struct socket *old_so, *new_so;
4375 struct sctp_queued_to_read *control, *nctl;
4376 struct sctp_readhead tmp_queue;
4380 old_so = old_inp->sctp_socket;
4381 new_so = new_inp->sctp_socket;
4382 TAILQ_INIT(&tmp_queue);
4383 error = sblock(&old_so->so_rcv, waitflags);
4386 * Gak, can't get sblock, we have a problem. data will be
4387 * left stranded.. and we don't dare look at it since the
4388 * other thread may be reading something. Oh well, its a
4389 * screwed up app that does a peeloff OR a accept while
4390 * reading from the main socket... actually its only the
4391 * peeloff() case, since I think read will fail on a
4392 * listening socket..
4396 /* lock the socket buffers */
4397 SCTP_INP_READ_LOCK(old_inp);
4398 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4399 /* Pull off all for out target stcb */
4400 if (control->stcb == stcb) {
4401 /* remove it we want it */
4402 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4403 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4406 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4407 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4409 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4410 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4411 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4413 m = SCTP_BUF_NEXT(m);
4417 SCTP_INP_READ_UNLOCK(old_inp);
4418 /* Remove the sb-lock on the old socket */
4420 sbunlock(&old_so->so_rcv);
4421 /* Now we move them over to the new socket buffer */
4422 SCTP_INP_READ_LOCK(new_inp);
4423 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4424 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4427 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4428 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4430 sctp_sballoc(stcb, &new_so->so_rcv, m);
4431 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4432 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4434 m = SCTP_BUF_NEXT(m);
4437 SCTP_INP_READ_UNLOCK(new_inp);
4441 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
4442 struct sctp_tcb *stcb,
4444 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4449 if ((inp != NULL) && (inp->sctp_socket != NULL)) {
4450 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4453 so = SCTP_INP_SO(inp);
4456 atomic_add_int(&stcb->asoc.refcnt, 1);
4457 SCTP_TCB_UNLOCK(stcb);
4459 SCTP_SOCKET_LOCK(so, 1);
4461 SCTP_TCB_LOCK(stcb);
4462 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4464 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4465 SCTP_SOCKET_UNLOCK(so, 1);
4470 sctp_sorwakeup(inp, inp->sctp_socket);
4471 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4473 SCTP_SOCKET_UNLOCK(so, 1);
4480 sctp_add_to_readq(struct sctp_inpcb *inp,
4481 struct sctp_tcb *stcb,
4482 struct sctp_queued_to_read *control,
4485 int inp_read_lock_held,
4487 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4493 * Here we must place the control on the end of the socket read
4494 * queue AND increment sb_cc so that select will work properly on
4497 struct mbuf *m, *prev = NULL;
4502 panic("Gak, inp NULL on add_to_readq");
4506 if (inp_read_lock_held == 0)
4507 SCTP_INP_READ_LOCK(inp);
4508 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4509 sctp_free_remote_addr(control->whoFrom);
4510 if (control->data) {
4511 sctp_m_freem(control->data);
4512 control->data = NULL;
4514 sctp_free_a_readq(stcb, control);
4515 if (inp_read_lock_held == 0)
4516 SCTP_INP_READ_UNLOCK(inp);
4519 if (!(control->spec_flags & M_NOTIFICATION)) {
4520 atomic_add_int(&inp->total_recvs, 1);
4521 if (!control->do_not_ref_stcb) {
4522 atomic_add_int(&stcb->total_recvs, 1);
4526 control->held_length = 0;
4527 control->length = 0;
4529 if (SCTP_BUF_LEN(m) == 0) {
4530 /* Skip mbufs with NO length */
4533 control->data = sctp_m_free(m);
4536 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4537 m = SCTP_BUF_NEXT(prev);
4540 control->tail_mbuf = prev;
4545 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4546 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4548 sctp_sballoc(stcb, sb, m);
4549 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4550 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4552 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4553 m = SCTP_BUF_NEXT(m);
4556 control->tail_mbuf = prev;
4558 /* Everything got collapsed out?? */
4559 sctp_free_remote_addr(control->whoFrom);
4560 sctp_free_a_readq(stcb, control);
4561 if (inp_read_lock_held == 0)
4562 SCTP_INP_READ_UNLOCK(inp);
4566 control->end_added = 1;
4568 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4569 control->on_read_q = 1;
4570 if (inp_read_lock_held == 0)
4571 SCTP_INP_READ_UNLOCK(inp);
4572 if (inp && inp->sctp_socket) {
4573 sctp_wakeup_the_read_socket(inp, stcb, so_locked);
4577 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4578 *************ALTERNATE ROUTING CODE
4581 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4582 *************ALTERNATE ROUTING CODE
4586 sctp_generate_cause(uint16_t code, char *info)
4589 struct sctp_gen_error_cause *cause;
4593 if ((code == 0) || (info == NULL)) {
4596 info_len = strlen(info);
4597 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
4600 len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len);
4601 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4603 SCTP_BUF_LEN(m) = len;
4604 cause = mtod(m, struct sctp_gen_error_cause *);
4605 cause->code = htons(code);
4606 cause->length = htons(len);
4607 memcpy(cause->info, info, info_len);
4613 sctp_generate_no_user_data_cause(uint32_t tsn)
4616 struct sctp_error_no_user_data *no_user_data_cause;
4619 len = (uint16_t)sizeof(struct sctp_error_no_user_data);
4620 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4622 SCTP_BUF_LEN(m) = len;
4623 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4624 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4625 no_user_data_cause->cause.length = htons(len);
4626 no_user_data_cause->tsn = htonl(tsn);
4631 #ifdef SCTP_MBCNT_LOGGING
4633 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4634 struct sctp_tmit_chunk *tp1, int chk_cnt)
4636 if (tp1->data == NULL) {
4639 asoc->chunks_on_out_queue -= chk_cnt;
4640 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4641 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4642 asoc->total_output_queue_size,
4647 if (asoc->total_output_queue_size >= tp1->book_size) {
4648 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4650 asoc->total_output_queue_size = 0;
4653 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4654 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4655 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4656 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4658 stcb->sctp_socket->so_snd.sb_cc = 0;
4667 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4668 uint8_t sent, int so_locked
4669 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4674 struct sctp_stream_out *strq;
4675 struct sctp_tmit_chunk *chk = NULL, *tp2;
4676 struct sctp_stream_queue_pending *sp;
4679 uint8_t foundeom = 0;
4682 int do_wakeup_routine = 0;
4684 sid = tp1->rec.data.sid;
4685 mid = tp1->rec.data.mid;
4686 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
4687 stcb->asoc.abandoned_sent[0]++;
4688 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4689 stcb->asoc.strmout[sid].abandoned_sent[0]++;
4690 #if defined(SCTP_DETAILED_STR_STATS)
4691 stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4694 stcb->asoc.abandoned_unsent[0]++;
4695 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4696 stcb->asoc.strmout[sid].abandoned_unsent[0]++;
4697 #if defined(SCTP_DETAILED_STR_STATS)
4698 stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4702 ret_sz += tp1->book_size;
4703 if (tp1->data != NULL) {
4704 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4705 sctp_flight_size_decrease(tp1);
4706 sctp_total_flight_decrease(stcb, tp1);
4708 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4709 stcb->asoc.peers_rwnd += tp1->send_size;
4710 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4712 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4714 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4717 sctp_m_freem(tp1->data);
4720 do_wakeup_routine = 1;
4721 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4722 stcb->asoc.sent_queue_cnt_removeable--;
4725 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4726 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4727 SCTP_DATA_NOT_FRAG) {
4728 /* not frag'ed we ae done */
4731 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4732 /* end of frag, we are done */
4737 * Its a begin or middle piece, we must mark all of
4741 tp1 = TAILQ_NEXT(tp1, sctp_next);
4743 } while (tp1 && notdone);
4744 if (foundeom == 0) {
4746 * The multi-part message was scattered across the send and
4749 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4750 if ((tp1->rec.data.sid != sid) ||
4751 (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) {
4755 * save to chk in case we have some on stream out
4756 * queue. If so and we have an un-transmitted one we
4757 * don't have to fudge the TSN.
4760 ret_sz += tp1->book_size;
4761 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4763 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4765 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4768 sctp_m_freem(tp1->data);
4771 /* No flight involved here book the size to 0 */
4773 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4776 do_wakeup_routine = 1;
4777 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4778 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4780 * on to the sent queue so we can wait for it to be
4783 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4785 stcb->asoc.send_queue_cnt--;
4786 stcb->asoc.sent_queue_cnt++;
4789 if (foundeom == 0) {
4791 * Still no eom found. That means there is stuff left on the
4792 * stream out queue.. yuck.
4794 SCTP_TCB_SEND_LOCK(stcb);
4795 strq = &stcb->asoc.strmout[sid];
4796 sp = TAILQ_FIRST(&strq->outqueue);
4798 sp->discard_rest = 1;
4800 * We may need to put a chunk on the queue that
4801 * holds the TSN that would have been sent with the
4805 /* Yep, we have to */
4806 sctp_alloc_a_chunk(stcb, chk);
4809 * we are hosed. All we can do is
4810 * nothing.. which will cause an
4811 * abort if the peer is paying
4816 memset(chk, 0, sizeof(*chk));
4817 chk->rec.data.rcv_flags = 0;
4818 chk->sent = SCTP_FORWARD_TSN_SKIP;
4819 chk->asoc = &stcb->asoc;
4820 if (stcb->asoc.idata_supported == 0) {
4821 if (sp->sinfo_flags & SCTP_UNORDERED) {
4822 chk->rec.data.mid = 0;
4824 chk->rec.data.mid = strq->next_mid_ordered;
4827 if (sp->sinfo_flags & SCTP_UNORDERED) {
4828 chk->rec.data.mid = strq->next_mid_unordered;
4830 chk->rec.data.mid = strq->next_mid_ordered;
4833 chk->rec.data.sid = sp->sid;
4834 chk->rec.data.ppid = sp->ppid;
4835 chk->rec.data.context = sp->context;
4836 chk->flags = sp->act_flags;
4838 chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4839 strq->chunks_on_queues++;
4840 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4841 stcb->asoc.sent_queue_cnt++;
4842 stcb->asoc.pr_sctp_cnt++;
4844 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4845 if (sp->sinfo_flags & SCTP_UNORDERED) {
4846 chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED;
4848 if (stcb->asoc.idata_supported == 0) {
4849 if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) {
4850 strq->next_mid_ordered++;
4853 if (sp->sinfo_flags & SCTP_UNORDERED) {
4854 strq->next_mid_unordered++;
4856 strq->next_mid_ordered++;
4862 * Pull any data to free up the SB and allow
4863 * sender to "add more" while we will throw
4866 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4867 ret_sz += sp->length;
4868 do_wakeup_routine = 1;
4870 sctp_m_freem(sp->data);
4872 sp->tail_mbuf = NULL;
4876 SCTP_TCB_SEND_UNLOCK(stcb);
4878 if (do_wakeup_routine) {
4879 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4882 so = SCTP_INP_SO(stcb->sctp_ep);
4884 atomic_add_int(&stcb->asoc.refcnt, 1);
4885 SCTP_TCB_UNLOCK(stcb);
4886 SCTP_SOCKET_LOCK(so, 1);
4887 SCTP_TCB_LOCK(stcb);
4888 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4889 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4890 /* assoc was freed while we were unlocked */
4891 SCTP_SOCKET_UNLOCK(so, 1);
4896 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4897 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4899 SCTP_SOCKET_UNLOCK(so, 1);
4907 * checks to see if the given address, sa, is one that is currently known by
4908 * the kernel note: can't distinguish the same address on multiple interfaces
4909 * and doesn't handle multiple addresses with different zone/scope id's note:
4910 * ifa_ifwithaddr() compares the entire sockaddr struct
4913 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4916 struct sctp_laddr *laddr;
4918 if (holds_lock == 0) {
4919 SCTP_INP_RLOCK(inp);
4921 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4922 if (laddr->ifa == NULL)
4924 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4927 if (addr->sa_family == AF_INET) {
4928 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4929 laddr->ifa->address.sin.sin_addr.s_addr) {
4931 if (holds_lock == 0) {
4932 SCTP_INP_RUNLOCK(inp);
4934 return (laddr->ifa);
4940 if (addr->sa_family == AF_INET6) {
4941 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4942 &laddr->ifa->address.sin6)) {
4944 if (holds_lock == 0) {
4945 SCTP_INP_RUNLOCK(inp);
4947 return (laddr->ifa);
4953 if (holds_lock == 0) {
4954 SCTP_INP_RUNLOCK(inp);
4960 sctp_get_ifa_hash_val(struct sockaddr *addr)
4962 switch (addr->sa_family) {
4966 struct sockaddr_in *sin;
4968 sin = (struct sockaddr_in *)addr;
4969 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
4975 struct sockaddr_in6 *sin6;
4976 uint32_t hash_of_addr;
4978 sin6 = (struct sockaddr_in6 *)addr;
4979 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
4980 sin6->sin6_addr.s6_addr32[1] +
4981 sin6->sin6_addr.s6_addr32[2] +
4982 sin6->sin6_addr.s6_addr32[3]);
4983 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
4984 return (hash_of_addr);
4994 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
4996 struct sctp_ifa *sctp_ifap;
4997 struct sctp_vrf *vrf;
4998 struct sctp_ifalist *hash_head;
4999 uint32_t hash_of_addr;
5001 if (holds_lock == 0)
5002 SCTP_IPI_ADDR_RLOCK();
5004 vrf = sctp_find_vrf(vrf_id);
5006 if (holds_lock == 0)
5007 SCTP_IPI_ADDR_RUNLOCK();
5010 hash_of_addr = sctp_get_ifa_hash_val(addr);
5012 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5013 if (hash_head == NULL) {
5014 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5015 hash_of_addr, (uint32_t)vrf->vrf_addr_hashmark,
5016 (uint32_t)(hash_of_addr & vrf->vrf_addr_hashmark));
5017 sctp_print_address(addr);
5018 SCTP_PRINTF("No such bucket for address\n");
5019 if (holds_lock == 0)
5020 SCTP_IPI_ADDR_RUNLOCK();
5024 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5025 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5028 if (addr->sa_family == AF_INET) {
5029 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5030 sctp_ifap->address.sin.sin_addr.s_addr) {
5032 if (holds_lock == 0)
5033 SCTP_IPI_ADDR_RUNLOCK();
5040 if (addr->sa_family == AF_INET6) {
5041 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5042 &sctp_ifap->address.sin6)) {
5044 if (holds_lock == 0)
5045 SCTP_IPI_ADDR_RUNLOCK();
5052 if (holds_lock == 0)
5053 SCTP_IPI_ADDR_RUNLOCK();
5058 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t *freed_so_far, int hold_rlock,
5061 /* User pulled some data, do we need a rwnd update? */
5064 struct socket *so = NULL;
5069 atomic_add_int(&stcb->asoc.refcnt, 1);
5071 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5072 SCTP_STATE_SHUTDOWN_RECEIVED |
5073 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5074 /* Pre-check If we are freeing no update */
5077 SCTP_INP_INCR_REF(stcb->sctp_ep);
5078 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5079 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5082 so = stcb->sctp_socket;
5086 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5087 /* Have you have freed enough to look */
5089 /* Yep, its worth a look and the lock overhead */
5091 /* Figure out what the rwnd would be */
5092 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5093 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5094 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5098 if (dif >= rwnd_req) {
5100 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5103 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5105 * One last check before we allow the guy possibly
5106 * to get in. There is a race, where the guy has not
5107 * reached the gate. In that case
5111 SCTP_TCB_LOCK(stcb);
5112 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5113 /* No reports here */
5114 SCTP_TCB_UNLOCK(stcb);
5117 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5118 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5120 sctp_chunk_output(stcb->sctp_ep, stcb,
5121 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5122 /* make sure no timer is running */
5123 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5124 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5125 SCTP_TCB_UNLOCK(stcb);
5127 /* Update how much we have pending */
5128 stcb->freed_by_sorcv_sincelast = dif;
5131 if (so && r_unlocked && hold_rlock) {
5132 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5134 SCTP_INP_DECR_REF(stcb->sctp_ep);
5136 atomic_add_int(&stcb->asoc.refcnt, -1);
5141 sctp_sorecvmsg(struct socket *so,
5144 struct sockaddr *from,
5147 struct sctp_sndrcvinfo *sinfo,
5151 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5152 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5153 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5154 * On the way out we may send out any combination of:
5155 * MSG_NOTIFICATION MSG_EOR
5158 struct sctp_inpcb *inp = NULL;
5160 int cp_len = 0, error = 0;
5161 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5162 struct mbuf *m = NULL;
5163 struct sctp_tcb *stcb = NULL;
5164 int wakeup_read_socket = 0;
5165 int freecnt_applied = 0;
5166 int out_flags = 0, in_flags = 0;
5167 int block_allowed = 1;
5168 uint32_t freed_so_far = 0;
5169 uint32_t copied_so_far = 0;
5170 int in_eeor_mode = 0;
5171 int no_rcv_needed = 0;
5172 uint32_t rwnd_req = 0;
5173 int hold_sblock = 0;
5176 uint32_t held_length = 0;
5177 int sockbuf_lock = 0;
5180 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5184 in_flags = *msg_flags;
5185 if (in_flags & MSG_PEEK)
5186 SCTP_STAT_INCR(sctps_read_peeks);
5190 slen = uio->uio_resid;
5192 /* Pull in and set up our int flags */
5193 if (in_flags & MSG_OOB) {
5194 /* Out of band's NOT supported */
5195 return (EOPNOTSUPP);
5197 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5198 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5201 if ((in_flags & (MSG_DONTWAIT
5204 SCTP_SO_IS_NBIO(so)) {
5207 /* setup the endpoint */
5208 inp = (struct sctp_inpcb *)so->so_pcb;
5210 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5213 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5214 /* Must be at least a MTU's worth */
5215 if (rwnd_req < SCTP_MIN_RWND)
5216 rwnd_req = SCTP_MIN_RWND;
5217 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5218 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5219 sctp_misc_ints(SCTP_SORECV_ENTER,
5220 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5222 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5223 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5224 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5226 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5228 goto release_unlocked;
5235 if (hold_sblock == 0) {
5236 SOCKBUF_LOCK(&so->so_rcv);
5239 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5240 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5243 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5245 error = so->so_error;
5246 if ((in_flags & MSG_PEEK) == 0)
5250 if (so->so_rcv.sb_cc == 0) {
5257 if (so->so_rcv.sb_cc <= held_length) {
5259 error = so->so_error;
5260 if ((in_flags & MSG_PEEK) == 0) {
5265 if ((so->so_rcv.sb_cc == 0) &&
5266 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5267 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5268 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5270 * For active open side clear flags for
5271 * re-use passive open is blocked by
5274 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5276 * You were aborted, passive side
5279 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5282 so->so_state &= ~(SS_ISCONNECTING |
5283 SS_ISDISCONNECTING |
5287 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5288 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5295 if (block_allowed) {
5296 error = sbwait(&so->so_rcv);
5301 goto restart_nosblocks;
5303 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5304 error = EWOULDBLOCK;
5308 if (hold_sblock == 1) {
5309 SOCKBUF_UNLOCK(&so->so_rcv);
5312 /* we possibly have data we can read */
5313 /* sa_ignore FREED_MEMORY */
5314 control = TAILQ_FIRST(&inp->read_queue);
5315 if (control == NULL) {
5317 * This could be happening since the appender did the
5318 * increment but as not yet did the tailq insert onto the
5321 if (hold_rlock == 0) {
5322 SCTP_INP_READ_LOCK(inp);
5324 control = TAILQ_FIRST(&inp->read_queue);
5325 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5327 panic("Huh, its non zero and nothing on control?");
5329 so->so_rcv.sb_cc = 0;
5331 SCTP_INP_READ_UNLOCK(inp);
5335 if ((control->length == 0) &&
5336 (control->do_not_ref_stcb)) {
5338 * Clean up code for freeing assoc that left behind a
5339 * pdapi.. maybe a peer in EEOR that just closed after
5340 * sending and never indicated a EOR.
5342 if (hold_rlock == 0) {
5344 SCTP_INP_READ_LOCK(inp);
5346 control->held_length = 0;
5347 if (control->data) {
5348 /* Hmm there is data here .. fix */
5352 m_tmp = control->data;
5354 cnt += SCTP_BUF_LEN(m_tmp);
5355 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5356 control->tail_mbuf = m_tmp;
5357 control->end_added = 1;
5359 m_tmp = SCTP_BUF_NEXT(m_tmp);
5361 control->length = cnt;
5364 TAILQ_REMOVE(&inp->read_queue, control, next);
5365 /* Add back any hiddend data */
5366 sctp_free_remote_addr(control->whoFrom);
5367 sctp_free_a_readq(stcb, control);
5371 SCTP_INP_READ_UNLOCK(inp);
5375 if ((control->length == 0) &&
5376 (control->end_added == 1)) {
5378 * Do we also need to check for (control->pdapi_aborted ==
5381 if (hold_rlock == 0) {
5383 SCTP_INP_READ_LOCK(inp);
5385 TAILQ_REMOVE(&inp->read_queue, control, next);
5386 if (control->data) {
5388 panic("control->data not null but control->length == 0");
5390 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5391 sctp_m_freem(control->data);
5392 control->data = NULL;
5395 if (control->aux_data) {
5396 sctp_m_free(control->aux_data);
5397 control->aux_data = NULL;
5400 if (control->on_strm_q) {
5401 panic("About to free ctl:%p so:%p and its in %d",
5402 control, so, control->on_strm_q);
5405 sctp_free_remote_addr(control->whoFrom);
5406 sctp_free_a_readq(stcb, control);
5409 SCTP_INP_READ_UNLOCK(inp);
5413 if (control->length == 0) {
5414 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5416 /* find a more suitable one then this */
5417 ctl = TAILQ_NEXT(control, next);
5419 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5421 (ctl->spec_flags & M_NOTIFICATION) ||
5422 ((ctl->do_not_ref_stcb == 0) &&
5423 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5426 * If we have a different TCB next, and there is data
5427 * present. If we have already taken some (pdapi), OR we can
5428 * ref the tcb and no delivery as started on this stream, we
5429 * take it. Note we allow a notification on a different
5430 * assoc to be delivered..
5434 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5436 ((ctl->some_taken) ||
5437 ((ctl->do_not_ref_stcb == 0) &&
5438 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5439 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5441 * If we have the same tcb, and there is data present, and we
5442 * have the strm interleave feature present. Then if we have
5443 * taken some (pdapi) or we can refer to tht tcb AND we have
5444 * not started a delivery for this stream, we can take it.
5445 * Note we do NOT allow a notificaiton on the same assoc to
5451 ctl = TAILQ_NEXT(ctl, next);
5455 * if we reach here, not suitable replacement is available
5456 * <or> fragment interleave is NOT on. So stuff the sb_cc
5457 * into the our held count, and its time to sleep again.
5459 held_length = so->so_rcv.sb_cc;
5460 control->held_length = so->so_rcv.sb_cc;
5463 /* Clear the held length since there is something to read */
5464 control->held_length = 0;
5467 * If we reach here, control has a some data for us to read off.
5468 * Note that stcb COULD be NULL.
5470 if (hold_rlock == 0) {
5472 SCTP_INP_READ_LOCK(inp);
5474 control->some_taken++;
5475 stcb = control->stcb;
5477 if ((control->do_not_ref_stcb == 0) &&
5478 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5479 if (freecnt_applied == 0)
5481 } else if (control->do_not_ref_stcb == 0) {
5482 /* you can't free it on me please */
5484 * The lock on the socket buffer protects us so the
5485 * free code will stop. But since we used the
5486 * socketbuf lock and the sender uses the tcb_lock
5487 * to increment, we need to use the atomic add to
5490 if (freecnt_applied) {
5492 panic("refcnt already incremented");
5494 SCTP_PRINTF("refcnt already incremented?\n");
5497 atomic_add_int(&stcb->asoc.refcnt, 1);
5498 freecnt_applied = 1;
5501 * Setup to remember how much we have not yet told
5502 * the peer our rwnd has opened up. Note we grab the
5503 * value from the tcb from last time. Note too that
5504 * sack sending clears this when a sack is sent,
5505 * which is fine. Once we hit the rwnd_req, we then
5506 * will go to the sctp_user_rcvd() that will not
5507 * lock until it KNOWs it MUST send a WUP-SACK.
5509 freed_so_far = stcb->freed_by_sorcv_sincelast;
5510 stcb->freed_by_sorcv_sincelast = 0;
5514 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5515 control->do_not_ref_stcb == 0) {
5516 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5518 /* First lets get off the sinfo and sockaddr info */
5519 if ((sinfo != NULL) && (filling_sinfo != 0)) {
5520 sinfo->sinfo_stream = control->sinfo_stream;
5521 sinfo->sinfo_ssn = (uint16_t)control->mid;
5522 sinfo->sinfo_flags = control->sinfo_flags;
5523 sinfo->sinfo_ppid = control->sinfo_ppid;
5524 sinfo->sinfo_context = control->sinfo_context;
5525 sinfo->sinfo_timetolive = control->sinfo_timetolive;
5526 sinfo->sinfo_tsn = control->sinfo_tsn;
5527 sinfo->sinfo_cumtsn = control->sinfo_cumtsn;
5528 sinfo->sinfo_assoc_id = control->sinfo_assoc_id;
5529 nxt = TAILQ_NEXT(control, next);
5530 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5531 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5532 struct sctp_extrcvinfo *s_extra;
5534 s_extra = (struct sctp_extrcvinfo *)sinfo;
5537 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5538 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5539 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5541 if (nxt->spec_flags & M_NOTIFICATION) {
5542 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5544 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5545 s_extra->serinfo_next_length = nxt->length;
5546 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5547 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5548 if (nxt->tail_mbuf != NULL) {
5549 if (nxt->end_added) {
5550 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5555 * we explicitly 0 this, since the memcpy
5556 * got some other things beyond the older
5557 * sinfo_ that is on the control's structure
5561 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5562 s_extra->serinfo_next_aid = 0;
5563 s_extra->serinfo_next_length = 0;
5564 s_extra->serinfo_next_ppid = 0;
5565 s_extra->serinfo_next_stream = 0;
5569 * update off the real current cum-ack, if we have an stcb.
5571 if ((control->do_not_ref_stcb == 0) && stcb)
5572 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5574 * mask off the high bits, we keep the actual chunk bits in
5577 sinfo->sinfo_flags &= 0x00ff;
5578 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5579 sinfo->sinfo_flags |= SCTP_UNORDERED;
5582 #ifdef SCTP_ASOCLOG_OF_TSNS
5584 int index, newindex;
5585 struct sctp_pcbtsn_rlog *entry;
5588 index = inp->readlog_index;
5589 newindex = index + 1;
5590 if (newindex >= SCTP_READ_LOG_SIZE) {
5593 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5594 entry = &inp->readlog[index];
5595 entry->vtag = control->sinfo_assoc_id;
5596 entry->strm = control->sinfo_stream;
5597 entry->seq = (uint16_t)control->mid;
5598 entry->sz = control->length;
5599 entry->flgs = control->sinfo_flags;
5602 if ((fromlen > 0) && (from != NULL)) {
5603 union sctp_sockstore store;
5606 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5609 len = sizeof(struct sockaddr_in6);
5610 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5611 store.sin6.sin6_port = control->port_from;
5617 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5618 len = sizeof(struct sockaddr_in6);
5619 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5621 store.sin6.sin6_port = control->port_from;
5623 len = sizeof(struct sockaddr_in);
5624 store.sin = control->whoFrom->ro._l_addr.sin;
5625 store.sin.sin_port = control->port_from;
5628 len = sizeof(struct sockaddr_in);
5629 store.sin = control->whoFrom->ro._l_addr.sin;
5630 store.sin.sin_port = control->port_from;
5638 memcpy(from, &store, min((size_t)fromlen, len));
5641 struct sockaddr_in6 lsa6, *from6;
5643 from6 = (struct sockaddr_in6 *)from;
5644 sctp_recover_scope_mac(from6, (&lsa6));
5649 SCTP_INP_READ_UNLOCK(inp);
5653 SOCKBUF_UNLOCK(&so->so_rcv);
5656 /* now copy out what data we can */
5658 /* copy out each mbuf in the chain up to length */
5662 /* Move out all we can */
5663 cp_len = (int)uio->uio_resid;
5664 my_len = (int)SCTP_BUF_LEN(m);
5665 if (cp_len > my_len) {
5666 /* not enough in this buf */
5670 SCTP_INP_READ_UNLOCK(inp);
5674 error = uiomove(mtod(m, char *), cp_len, uio);
5676 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5679 if ((control->do_not_ref_stcb == 0) && stcb &&
5680 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5684 /* error we are out of here */
5687 SCTP_INP_READ_LOCK(inp);
5689 if (cp_len == SCTP_BUF_LEN(m)) {
5690 if ((SCTP_BUF_NEXT(m) == NULL) &&
5691 (control->end_added)) {
5692 out_flags |= MSG_EOR;
5693 if ((control->do_not_ref_stcb == 0) &&
5694 (control->stcb != NULL) &&
5695 ((control->spec_flags & M_NOTIFICATION) == 0))
5696 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5698 if (control->spec_flags & M_NOTIFICATION) {
5699 out_flags |= MSG_NOTIFICATION;
5701 /* we ate up the mbuf */
5702 if (in_flags & MSG_PEEK) {
5704 m = SCTP_BUF_NEXT(m);
5705 copied_so_far += cp_len;
5707 /* dispose of the mbuf */
5708 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5709 sctp_sblog(&so->so_rcv,
5710 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5712 sctp_sbfree(control, stcb, &so->so_rcv, m);
5713 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5714 sctp_sblog(&so->so_rcv,
5715 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5717 copied_so_far += cp_len;
5718 freed_so_far += cp_len;
5719 freed_so_far += MSIZE;
5720 atomic_subtract_int(&control->length, cp_len);
5721 control->data = sctp_m_free(m);
5724 * been through it all, must hold sb
5725 * lock ok to null tail
5727 if (control->data == NULL) {
5729 if ((control->end_added == 0) ||
5730 (TAILQ_NEXT(control, next) == NULL)) {
5738 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5739 panic("Hmm we don't own the lock?");
5743 control->tail_mbuf = NULL;
5745 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5746 panic("end_added, nothing left and no MSG_EOR");
5752 /* Do we need to trim the mbuf? */
5753 if (control->spec_flags & M_NOTIFICATION) {
5754 out_flags |= MSG_NOTIFICATION;
5756 if ((in_flags & MSG_PEEK) == 0) {
5757 SCTP_BUF_RESV_UF(m, cp_len);
5758 SCTP_BUF_LEN(m) -= cp_len;
5759 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5760 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5762 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5763 if ((control->do_not_ref_stcb == 0) &&
5765 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5767 copied_so_far += cp_len;
5768 freed_so_far += cp_len;
5769 freed_so_far += MSIZE;
5770 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5771 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5772 SCTP_LOG_SBRESULT, 0);
5774 atomic_subtract_int(&control->length, cp_len);
5776 copied_so_far += cp_len;
5779 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5782 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5783 (control->do_not_ref_stcb == 0) &&
5784 (freed_so_far >= rwnd_req)) {
5785 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5787 } /* end while(m) */
5789 * At this point we have looked at it all and we either have
5790 * a MSG_EOR/or read all the user wants... <OR>
5791 * control->length == 0.
5793 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5794 /* we are done with this control */
5795 if (control->length == 0) {
5796 if (control->data) {
5798 panic("control->data not null at read eor?");
5800 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5801 sctp_m_freem(control->data);
5802 control->data = NULL;
5806 if (hold_rlock == 0) {
5807 SCTP_INP_READ_LOCK(inp);
5810 TAILQ_REMOVE(&inp->read_queue, control, next);
5811 /* Add back any hiddend data */
5812 if (control->held_length) {
5814 control->held_length = 0;
5815 wakeup_read_socket = 1;
5817 if (control->aux_data) {
5818 sctp_m_free(control->aux_data);
5819 control->aux_data = NULL;
5821 no_rcv_needed = control->do_not_ref_stcb;
5822 sctp_free_remote_addr(control->whoFrom);
5823 control->data = NULL;
5825 if (control->on_strm_q) {
5826 panic("About to free ctl:%p so:%p and its in %d",
5827 control, so, control->on_strm_q);
5830 sctp_free_a_readq(stcb, control);
5832 if ((freed_so_far >= rwnd_req) &&
5833 (no_rcv_needed == 0))
5834 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5838 * The user did not read all of this
5839 * message, turn off the returned MSG_EOR
5840 * since we are leaving more behind on the
5844 if (control->end_added &&
5845 (control->data == NULL) &&
5846 (control->tail_mbuf == NULL)) {
5847 panic("Gak, control->length is corrupt?");
5850 no_rcv_needed = control->do_not_ref_stcb;
5851 out_flags &= ~MSG_EOR;
5854 if (out_flags & MSG_EOR) {
5857 if ((uio->uio_resid == 0) ||
5859 (copied_so_far >= (uint32_t)max(so->so_rcv.sb_lowat, 1)))) {
5863 * If I hit here the receiver wants more and this message is
5864 * NOT done (pd-api). So two questions. Can we block? if not
5865 * we are done. Did the user NOT set MSG_WAITALL?
5867 if (block_allowed == 0) {
5871 * We need to wait for more data a few things: - We don't
5872 * sbunlock() so we don't get someone else reading. - We
5873 * must be sure to account for the case where what is added
5874 * is NOT to our control when we wakeup.
5878 * Do we need to tell the transport a rwnd update might be
5879 * needed before we go to sleep?
5881 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5882 ((freed_so_far >= rwnd_req) &&
5883 (control->do_not_ref_stcb == 0) &&
5884 (no_rcv_needed == 0))) {
5885 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5888 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5891 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5894 if (hold_rlock == 1) {
5895 SCTP_INP_READ_UNLOCK(inp);
5898 if (hold_sblock == 0) {
5899 SOCKBUF_LOCK(&so->so_rcv);
5902 if ((copied_so_far) && (control->length == 0) &&
5903 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5906 if (so->so_rcv.sb_cc <= control->held_length) {
5907 error = sbwait(&so->so_rcv);
5911 control->held_length = 0;
5914 SOCKBUF_UNLOCK(&so->so_rcv);
5917 if (control->length == 0) {
5918 /* still nothing here */
5919 if (control->end_added == 1) {
5920 /* he aborted, or is done i.e.did a shutdown */
5921 out_flags |= MSG_EOR;
5922 if (control->pdapi_aborted) {
5923 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5924 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5926 out_flags |= MSG_TRUNC;
5928 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5929 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5931 goto done_with_control;
5933 if (so->so_rcv.sb_cc > held_length) {
5934 control->held_length = so->so_rcv.sb_cc;
5937 goto wait_some_more;
5938 } else if (control->data == NULL) {
5940 * we must re-sync since data is probably being
5943 SCTP_INP_READ_LOCK(inp);
5944 if ((control->length > 0) && (control->data == NULL)) {
5946 * big trouble.. we have the lock and its
5950 panic("Impossible data==NULL length !=0");
5952 out_flags |= MSG_EOR;
5953 out_flags |= MSG_TRUNC;
5954 control->length = 0;
5955 SCTP_INP_READ_UNLOCK(inp);
5956 goto done_with_control;
5958 SCTP_INP_READ_UNLOCK(inp);
5959 /* We will fall around to get more data */
5964 * Give caller back the mbuf chain,
5965 * store in uio_resid the length
5967 wakeup_read_socket = 0;
5968 if ((control->end_added == 0) ||
5969 (TAILQ_NEXT(control, next) == NULL)) {
5970 /* Need to get rlock */
5971 if (hold_rlock == 0) {
5972 SCTP_INP_READ_LOCK(inp);
5976 if (control->end_added) {
5977 out_flags |= MSG_EOR;
5978 if ((control->do_not_ref_stcb == 0) &&
5979 (control->stcb != NULL) &&
5980 ((control->spec_flags & M_NOTIFICATION) == 0))
5981 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5983 if (control->spec_flags & M_NOTIFICATION) {
5984 out_flags |= MSG_NOTIFICATION;
5986 uio->uio_resid = control->length;
5987 *mp = control->data;
5990 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5991 sctp_sblog(&so->so_rcv,
5992 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5994 sctp_sbfree(control, stcb, &so->so_rcv, m);
5995 freed_so_far += SCTP_BUF_LEN(m);
5996 freed_so_far += MSIZE;
5997 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5998 sctp_sblog(&so->so_rcv,
5999 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6001 m = SCTP_BUF_NEXT(m);
6003 control->data = control->tail_mbuf = NULL;
6004 control->length = 0;
6005 if (out_flags & MSG_EOR) {
6006 /* Done with this control */
6007 goto done_with_control;
6011 if (hold_rlock == 1) {
6012 SCTP_INP_READ_UNLOCK(inp);
6015 if (hold_sblock == 1) {
6016 SOCKBUF_UNLOCK(&so->so_rcv);
6019 sbunlock(&so->so_rcv);
6024 SOCKBUF_UNLOCK(&so->so_rcv);
6027 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6028 if ((freed_so_far >= rwnd_req) &&
6029 (control && (control->do_not_ref_stcb == 0)) &&
6030 (no_rcv_needed == 0))
6031 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6035 *msg_flags = out_flags;
6037 if (((out_flags & MSG_EOR) == 0) &&
6038 ((in_flags & MSG_PEEK) == 0) &&
6040 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6041 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6042 struct sctp_extrcvinfo *s_extra;
6044 s_extra = (struct sctp_extrcvinfo *)sinfo;
6045 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6047 if (hold_rlock == 1) {
6048 SCTP_INP_READ_UNLOCK(inp);
6051 SOCKBUF_UNLOCK(&so->so_rcv);
6054 sbunlock(&so->so_rcv);
6056 if (freecnt_applied) {
6058 * The lock on the socket buffer protects us so the free
6059 * code will stop. But since we used the socketbuf lock and
6060 * the sender uses the tcb_lock to increment, we need to use
6061 * the atomic add to the refcnt.
6065 panic("stcb for refcnt has gone NULL?");
6071 /* Save the value back for next time */
6072 stcb->freed_by_sorcv_sincelast = freed_so_far;
6073 atomic_add_int(&stcb->asoc.refcnt, -1);
6075 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6077 sctp_misc_ints(SCTP_SORECV_DONE,
6079 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6083 sctp_misc_ints(SCTP_SORECV_DONE,
6085 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6091 if (wakeup_read_socket) {
6092 sctp_sorwakeup(inp, so);
6098 #ifdef SCTP_MBUF_LOGGING
6100 sctp_m_free(struct mbuf *m)
6102 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6103 sctp_log_mb(m, SCTP_MBUF_IFREE);
6109 sctp_m_freem(struct mbuf *mb)
6112 mb = sctp_m_free(mb);
6118 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6121 * Given a local address. For all associations that holds the
6122 * address, request a peer-set-primary.
6124 struct sctp_ifa *ifa;
6125 struct sctp_laddr *wi;
6127 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6129 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6130 return (EADDRNOTAVAIL);
6133 * Now that we have the ifa we must awaken the iterator with this
6136 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6138 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6141 /* Now incr the count and int wi structure */
6142 SCTP_INCR_LADDR_COUNT();
6143 memset(wi, 0, sizeof(*wi));
6144 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6146 wi->action = SCTP_SET_PRIM_ADDR;
6147 atomic_add_int(&ifa->refcount, 1);
6149 /* Now add it to the work queue */
6150 SCTP_WQ_ADDR_LOCK();
6152 * Should this really be a tailq? As it is we will process the
6155 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6156 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6157 (struct sctp_inpcb *)NULL,
6158 (struct sctp_tcb *)NULL,
6159 (struct sctp_nets *)NULL);
6160 SCTP_WQ_ADDR_UNLOCK();
6166 sctp_soreceive(struct socket *so,
6167 struct sockaddr **psa,
6170 struct mbuf **controlp,
6174 uint8_t sockbuf[256];
6175 struct sockaddr *from;
6176 struct sctp_extrcvinfo sinfo;
6177 int filling_sinfo = 1;
6179 struct sctp_inpcb *inp;
6181 inp = (struct sctp_inpcb *)so->so_pcb;
6182 /* pickup the assoc we are reading from */
6184 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6187 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6188 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6189 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6190 (controlp == NULL)) {
6191 /* user does not want the sndrcv ctl */
6195 from = (struct sockaddr *)sockbuf;
6196 fromlen = sizeof(sockbuf);
6203 if (filling_sinfo) {
6204 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6206 if (flagsp != NULL) {
6211 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, &flags,
6212 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6213 if (flagsp != NULL) {
6216 if (controlp != NULL) {
6217 /* copy back the sinfo in a CMSG format */
6218 if (filling_sinfo && ((flags & MSG_NOTIFICATION) == 0)) {
6219 *controlp = sctp_build_ctl_nchunk(inp,
6220 (struct sctp_sndrcvinfo *)&sinfo);
6226 /* copy back the address info */
6227 if (from && from->sa_len) {
6228 *psa = sodupsockaddr(from, M_NOWAIT);
6241 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6242 int totaddr, int *error)
6246 struct sctp_inpcb *inp;
6247 struct sockaddr *sa;
6250 struct sockaddr_in *sin;
6253 struct sockaddr_in6 *sin6;
6257 inp = stcb->sctp_ep;
6259 for (i = 0; i < totaddr; i++) {
6260 switch (sa->sa_family) {
6263 incr = sizeof(struct sockaddr_in);
6264 sin = (struct sockaddr_in *)sa;
6265 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6266 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6267 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6268 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6269 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6270 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6274 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6275 SCTP_DONOT_SETSCOPE,
6276 SCTP_ADDR_IS_CONFIRMED)) {
6277 /* assoc gone no un-lock */
6278 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6279 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6280 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6289 incr = sizeof(struct sockaddr_in6);
6290 sin6 = (struct sockaddr_in6 *)sa;
6291 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6292 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6293 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6294 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6295 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6299 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6300 SCTP_DONOT_SETSCOPE,
6301 SCTP_ADDR_IS_CONFIRMED)) {
6302 /* assoc gone no un-lock */
6303 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6304 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6305 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6315 sa = (struct sockaddr *)((caddr_t)sa + incr);
6322 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6323 unsigned int *totaddr,
6324 unsigned int *num_v4, unsigned int *num_v6, int *error,
6325 unsigned int limit, int *bad_addr)
6327 struct sockaddr *sa;
6328 struct sctp_tcb *stcb = NULL;
6329 unsigned int incr, at, i;
6333 *error = *num_v6 = *num_v4 = 0;
6334 /* account and validate addresses */
6335 for (i = 0; i < *totaddr; i++) {
6336 switch (sa->sa_family) {
6339 incr = (unsigned int)sizeof(struct sockaddr_in);
6340 if (sa->sa_len != incr) {
6341 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6352 struct sockaddr_in6 *sin6;
6354 sin6 = (struct sockaddr_in6 *)sa;
6355 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6356 /* Must be non-mapped for connectx */
6357 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6362 incr = (unsigned int)sizeof(struct sockaddr_in6);
6363 if (sa->sa_len != incr) {
6364 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6379 if (i == *totaddr) {
6382 SCTP_INP_INCR_REF(inp);
6383 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6385 /* Already have or am bring up an association */
6388 SCTP_INP_DECR_REF(inp);
6390 if ((at + incr) > limit) {
6394 sa = (struct sockaddr *)((caddr_t)sa + incr);
6396 return ((struct sctp_tcb *)NULL);
6400 * sctp_bindx(ADD) for one address.
6401 * assumes all arguments are valid/checked by caller.
6404 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6405 struct sockaddr *sa, sctp_assoc_t assoc_id,
6406 uint32_t vrf_id, int *error, void *p)
6408 struct sockaddr *addr_touse;
6409 #if defined(INET) && defined(INET6)
6410 struct sockaddr_in sin;
6413 /* see if we're bound all already! */
6414 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6415 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6421 if (sa->sa_family == AF_INET6) {
6423 struct sockaddr_in6 *sin6;
6426 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6427 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6431 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6432 /* can only bind v6 on PF_INET6 sockets */
6433 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6438 sin6 = (struct sockaddr_in6 *)addr_touse;
6439 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6440 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6441 SCTP_IPV6_V6ONLY(inp)) {
6442 /* can't bind v4-mapped on PF_INET sockets */
6443 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6447 in6_sin6_2_sin(&sin, sin6);
6448 addr_touse = (struct sockaddr *)&sin;
6454 if (sa->sa_family == AF_INET) {
6455 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6456 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6460 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6461 SCTP_IPV6_V6ONLY(inp)) {
6462 /* can't bind v4 on PF_INET sockets */
6463 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6469 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6471 /* Can't get proc for Net/Open BSD */
6472 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6476 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6480 * No locks required here since bind and mgmt_ep_sa all do their own
6481 * locking. If we do something for the FIX: below we may need to
6482 * lock in that case.
6484 if (assoc_id == 0) {
6485 /* add the address */
6486 struct sctp_inpcb *lep;
6487 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6489 /* validate the incoming port */
6490 if ((lsin->sin_port != 0) &&
6491 (lsin->sin_port != inp->sctp_lport)) {
6492 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6496 /* user specified 0 port, set it to existing port */
6497 lsin->sin_port = inp->sctp_lport;
6500 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6503 * We must decrement the refcount since we have the
6504 * ep already and are binding. No remove going on
6507 SCTP_INP_DECR_REF(lep);
6510 /* already bound to it.. ok */
6512 } else if (lep == NULL) {
6513 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6514 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6515 SCTP_ADD_IP_ADDRESS,
6518 *error = EADDRINUSE;
6524 * FIX: decide whether we allow assoc based bindx
6530 * sctp_bindx(DELETE) for one address.
6531 * assumes all arguments are valid/checked by caller.
6534 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6535 struct sockaddr *sa, sctp_assoc_t assoc_id,
6536 uint32_t vrf_id, int *error)
6538 struct sockaddr *addr_touse;
6539 #if defined(INET) && defined(INET6)
6540 struct sockaddr_in sin;
6543 /* see if we're bound all already! */
6544 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6545 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6551 if (sa->sa_family == AF_INET6) {
6553 struct sockaddr_in6 *sin6;
6556 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6557 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6561 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6562 /* can only bind v6 on PF_INET6 sockets */
6563 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6568 sin6 = (struct sockaddr_in6 *)addr_touse;
6569 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6570 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6571 SCTP_IPV6_V6ONLY(inp)) {
6572 /* can't bind mapped-v4 on PF_INET sockets */
6573 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6577 in6_sin6_2_sin(&sin, sin6);
6578 addr_touse = (struct sockaddr *)&sin;
6584 if (sa->sa_family == AF_INET) {
6585 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6586 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6590 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6591 SCTP_IPV6_V6ONLY(inp)) {
6592 /* can't bind v4 on PF_INET sockets */
6593 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6600 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6601 * below is ever changed we may need to lock before calling
6602 * association level binding.
6604 if (assoc_id == 0) {
6605 /* delete the address */
6606 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6607 SCTP_DEL_IP_ADDRESS,
6611 * FIX: decide whether we allow assoc based bindx
6617 * returns the valid local address count for an assoc, taking into account
6621 sctp_local_addr_count(struct sctp_tcb *stcb)
6625 int ipv4_local_scope, ipv4_addr_legal;
6628 int local_scope, site_scope, ipv6_addr_legal;
6630 struct sctp_vrf *vrf;
6631 struct sctp_ifn *sctp_ifn;
6632 struct sctp_ifa *sctp_ifa;
6635 /* Turn on all the appropriate scopes */
6636 loopback_scope = stcb->asoc.scope.loopback_scope;
6638 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6639 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6642 local_scope = stcb->asoc.scope.local_scope;
6643 site_scope = stcb->asoc.scope.site_scope;
6644 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6646 SCTP_IPI_ADDR_RLOCK();
6647 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6649 /* no vrf, no addresses */
6650 SCTP_IPI_ADDR_RUNLOCK();
6653 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6655 * bound all case: go through all ifns on the vrf
6657 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6658 if ((loopback_scope == 0) &&
6659 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6662 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6663 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6665 switch (sctp_ifa->address.sa.sa_family) {
6668 if (ipv4_addr_legal) {
6669 struct sockaddr_in *sin;
6671 sin = &sctp_ifa->address.sin;
6672 if (sin->sin_addr.s_addr == 0) {
6679 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6680 &sin->sin_addr) != 0) {
6683 if ((ipv4_local_scope == 0) &&
6684 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6687 /* count this one */
6696 if (ipv6_addr_legal) {
6697 struct sockaddr_in6 *sin6;
6699 sin6 = &sctp_ifa->address.sin6;
6700 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6703 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6704 &sin6->sin6_addr) != 0) {
6707 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6708 if (local_scope == 0)
6710 if (sin6->sin6_scope_id == 0) {
6711 if (sa6_recoverscope(sin6) != 0)
6724 if ((site_scope == 0) &&
6725 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6728 /* count this one */
6743 struct sctp_laddr *laddr;
6745 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6747 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6750 /* count this one */
6754 SCTP_IPI_ADDR_RUNLOCK();
6758 #if defined(SCTP_LOCAL_TRACE_BUF)
6761 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)
6763 uint32_t saveindex, newindex;
6766 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6767 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6770 newindex = saveindex + 1;
6772 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6773 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6776 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6777 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6778 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6779 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6780 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6781 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6782 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6783 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6788 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
6789 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
6793 struct ip6_hdr *ip6;
6795 struct mbuf *sp, *last;
6796 struct udphdr *uhdr;
6799 if ((m->m_flags & M_PKTHDR) == 0) {
6800 /* Can't handle one that is not a pkt hdr */
6803 /* Pull the src port */
6804 iph = mtod(m, struct ip *);
6805 uhdr = (struct udphdr *)((caddr_t)iph + off);
6806 port = uhdr->uh_sport;
6808 * Split out the mbuf chain. Leave the IP header in m, place the
6811 sp = m_split(m, off, M_NOWAIT);
6813 /* Gak, drop packet, we can't do a split */
6816 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6817 /* Gak, packet can't have an SCTP header in it - too small */
6821 /* Now pull up the UDP header and SCTP header together */
6822 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6824 /* Gak pullup failed */
6827 /* Trim out the UDP header */
6828 m_adj(sp, sizeof(struct udphdr));
6830 /* Now reconstruct the mbuf chain */
6831 for (last = m; last->m_next; last = last->m_next);
6833 m->m_pkthdr.len += sp->m_pkthdr.len;
6835 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
6836 * checksum and it was valid. Since CSUM_DATA_VALID ==
6837 * CSUM_SCTP_VALID this would imply that the HW also verified the
6838 * SCTP checksum. Therefore, clear the bit.
6840 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
6841 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
6843 if_name(m->m_pkthdr.rcvif),
6844 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
6845 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
6846 iph = mtod(m, struct ip *);
6847 switch (iph->ip_v) {
6850 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
6851 sctp_input_with_port(m, off, port);
6855 case IPV6_VERSION >> 4:
6856 ip6 = mtod(m, struct ip6_hdr *);
6857 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
6858 sctp6_input_with_port(&m, &off, port);
6872 sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED)
6874 struct ip *outer_ip, *inner_ip;
6878 struct sctp_inpcb *inp;
6879 struct sctp_tcb *stcb;
6880 struct sctp_nets *net;
6881 struct sctp_init_chunk *ch;
6882 struct sockaddr_in src, dst;
6885 inner_ip = (struct ip *)vip;
6886 icmp = (struct icmp *)((caddr_t)inner_ip -
6887 (sizeof(struct icmp) - sizeof(struct ip)));
6888 outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
6889 if (ntohs(outer_ip->ip_len) <
6890 sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
6893 udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
6894 sh = (struct sctphdr *)(udp + 1);
6895 memset(&src, 0, sizeof(struct sockaddr_in));
6896 src.sin_family = AF_INET;
6897 src.sin_len = sizeof(struct sockaddr_in);
6898 src.sin_port = sh->src_port;
6899 src.sin_addr = inner_ip->ip_src;
6900 memset(&dst, 0, sizeof(struct sockaddr_in));
6901 dst.sin_family = AF_INET;
6902 dst.sin_len = sizeof(struct sockaddr_in);
6903 dst.sin_port = sh->dest_port;
6904 dst.sin_addr = inner_ip->ip_dst;
6906 * 'dst' holds the dest of the packet that failed to be sent. 'src'
6907 * holds our local endpoint address. Thus we reverse the dst and the
6908 * src in the lookup.
6912 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
6913 (struct sockaddr *)&src,
6915 SCTP_DEFAULT_VRFID);
6916 if ((stcb != NULL) &&
6919 /* Check the UDP port numbers */
6920 if ((udp->uh_dport != net->port) ||
6921 (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
6922 SCTP_TCB_UNLOCK(stcb);
6925 /* Check the verification tag */
6926 if (ntohl(sh->v_tag) != 0) {
6928 * This must be the verification tag used for
6929 * sending out packets. We don't consider packets
6930 * reflecting the verification tag.
6932 if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
6933 SCTP_TCB_UNLOCK(stcb);
6937 if (ntohs(outer_ip->ip_len) >=
6939 8 + (inner_ip->ip_hl << 2) + 8 + 20) {
6941 * In this case we can check if we got an
6942 * INIT chunk and if the initiate tag
6945 ch = (struct sctp_init_chunk *)(sh + 1);
6946 if ((ch->ch.chunk_type != SCTP_INITIATION) ||
6947 (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
6948 SCTP_TCB_UNLOCK(stcb);
6952 SCTP_TCB_UNLOCK(stcb);
6956 type = icmp->icmp_type;
6957 code = icmp->icmp_code;
6958 if ((type == ICMP_UNREACH) &&
6959 (code == ICMP_UNREACH_PORT)) {
6960 code = ICMP_UNREACH_PROTOCOL;
6962 sctp_notify(inp, stcb, net, type, code,
6963 ntohs(inner_ip->ip_len),
6964 (uint32_t)ntohs(icmp->icmp_nextmtu));
6966 if ((stcb == NULL) && (inp != NULL)) {
6967 /* reduce ref-count */
6968 SCTP_INP_WLOCK(inp);
6969 SCTP_INP_DECR_REF(inp);
6970 SCTP_INP_WUNLOCK(inp);
6973 SCTP_TCB_UNLOCK(stcb);
6982 sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED)
6984 struct ip6ctlparam *ip6cp;
6985 struct sctp_inpcb *inp;
6986 struct sctp_tcb *stcb;
6987 struct sctp_nets *net;
6990 struct sockaddr_in6 src, dst;
6993 ip6cp = (struct ip6ctlparam *)d;
6995 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid.
6997 if (ip6cp->ip6c_m == NULL) {
7001 * Check if we can safely examine the ports and the verification tag
7002 * of the SCTP common header.
7004 if (ip6cp->ip6c_m->m_pkthdr.len <
7005 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) {
7008 /* Copy out the UDP header. */
7009 memset(&udp, 0, sizeof(struct udphdr));
7010 m_copydata(ip6cp->ip6c_m,
7012 sizeof(struct udphdr),
7014 /* Copy out the port numbers and the verification tag. */
7015 memset(&sh, 0, sizeof(struct sctphdr));
7016 m_copydata(ip6cp->ip6c_m,
7017 ip6cp->ip6c_off + sizeof(struct udphdr),
7018 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
7020 memset(&src, 0, sizeof(struct sockaddr_in6));
7021 src.sin6_family = AF_INET6;
7022 src.sin6_len = sizeof(struct sockaddr_in6);
7023 src.sin6_port = sh.src_port;
7024 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
7025 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7028 memset(&dst, 0, sizeof(struct sockaddr_in6));
7029 dst.sin6_family = AF_INET6;
7030 dst.sin6_len = sizeof(struct sockaddr_in6);
7031 dst.sin6_port = sh.dest_port;
7032 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
7033 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7038 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7039 (struct sockaddr *)&src,
7040 &inp, &net, 1, SCTP_DEFAULT_VRFID);
7041 if ((stcb != NULL) &&
7044 /* Check the UDP port numbers */
7045 if ((udp.uh_dport != net->port) ||
7046 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7047 SCTP_TCB_UNLOCK(stcb);
7050 /* Check the verification tag */
7051 if (ntohl(sh.v_tag) != 0) {
7053 * This must be the verification tag used for
7054 * sending out packets. We don't consider packets
7055 * reflecting the verification tag.
7057 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
7058 SCTP_TCB_UNLOCK(stcb);
7062 if (ip6cp->ip6c_m->m_pkthdr.len >=
7063 ip6cp->ip6c_off + sizeof(struct udphdr) +
7064 sizeof(struct sctphdr) +
7065 sizeof(struct sctp_chunkhdr) +
7066 offsetof(struct sctp_init, a_rwnd)) {
7068 * In this case we can check if we got an
7069 * INIT chunk and if the initiate tag
7072 uint32_t initiate_tag;
7075 m_copydata(ip6cp->ip6c_m,
7077 sizeof(struct udphdr) +
7078 sizeof(struct sctphdr),
7080 (caddr_t)&chunk_type);
7081 m_copydata(ip6cp->ip6c_m,
7083 sizeof(struct udphdr) +
7084 sizeof(struct sctphdr) +
7085 sizeof(struct sctp_chunkhdr),
7087 (caddr_t)&initiate_tag);
7088 if ((chunk_type != SCTP_INITIATION) ||
7089 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
7090 SCTP_TCB_UNLOCK(stcb);
7094 SCTP_TCB_UNLOCK(stcb);
7098 type = ip6cp->ip6c_icmp6->icmp6_type;
7099 code = ip6cp->ip6c_icmp6->icmp6_code;
7100 if ((type == ICMP6_DST_UNREACH) &&
7101 (code == ICMP6_DST_UNREACH_NOPORT)) {
7102 type = ICMP6_PARAM_PROB;
7103 code = ICMP6_PARAMPROB_NEXTHEADER;
7105 sctp6_notify(inp, stcb, net, type, code,
7106 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
7108 if ((stcb == NULL) && (inp != NULL)) {
7109 /* reduce inp's ref-count */
7110 SCTP_INP_WLOCK(inp);
7111 SCTP_INP_DECR_REF(inp);
7112 SCTP_INP_WUNLOCK(inp);
7115 SCTP_TCB_UNLOCK(stcb);
7122 sctp_over_udp_stop(void)
7125 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7129 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7130 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7131 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7135 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7136 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7137 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7143 sctp_over_udp_start(void)
7148 struct sockaddr_in sin;
7151 struct sockaddr_in6 sin6;
7154 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7157 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7158 if (ntohs(port) == 0) {
7159 /* Must have a port set */
7163 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7164 /* Already running -- must stop first */
7169 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7170 /* Already running -- must stop first */
7175 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7176 SOCK_DGRAM, IPPROTO_UDP,
7177 curthread->td_ucred, curthread))) {
7178 sctp_over_udp_stop();
7181 /* Call the special UDP hook. */
7182 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7183 sctp_recv_udp_tunneled_packet,
7184 sctp_recv_icmp_tunneled_packet,
7186 sctp_over_udp_stop();
7189 /* Ok, we have a socket, bind it to the port. */
7190 memset(&sin, 0, sizeof(struct sockaddr_in));
7191 sin.sin_len = sizeof(struct sockaddr_in);
7192 sin.sin_family = AF_INET;
7193 sin.sin_port = htons(port);
7194 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7195 (struct sockaddr *)&sin, curthread))) {
7196 sctp_over_udp_stop();
7201 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7202 SOCK_DGRAM, IPPROTO_UDP,
7203 curthread->td_ucred, curthread))) {
7204 sctp_over_udp_stop();
7207 /* Call the special UDP hook. */
7208 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7209 sctp_recv_udp_tunneled_packet,
7210 sctp_recv_icmp6_tunneled_packet,
7212 sctp_over_udp_stop();
7215 /* Ok, we have a socket, bind it to the port. */
7216 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7217 sin6.sin6_len = sizeof(struct sockaddr_in6);
7218 sin6.sin6_family = AF_INET6;
7219 sin6.sin6_port = htons(port);
7220 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7221 (struct sockaddr *)&sin6, curthread))) {
7222 sctp_over_udp_stop();
7229 #if defined(INET6) || defined(INET)
7232 * sctp_min_mtu ()returns the minimum of all non-zero arguments.
7233 * If all arguments are zero, zero is returned.
7236 sctp_min_mtu(uint32_t mtu1, uint32_t mtu2, uint32_t mtu3)
7241 return (min(mtu1, min(mtu2, mtu3)));
7243 return (min(mtu1, mtu2));
7247 return (min(mtu1, mtu3));
7255 return (min(mtu2, mtu3));
7266 sctp_hc_set_mtu(union sctp_sockstore *addr, uint16_t fibnum, uint32_t mtu)
7268 struct in_conninfo inc;
7270 memset(&inc, 0, sizeof(struct in_conninfo));
7271 inc.inc_fibnum = fibnum;
7272 switch (addr->sa.sa_family) {
7275 inc.inc_faddr = addr->sin.sin_addr;
7280 inc.inc_flags |= INC_ISIPV6;
7281 inc.inc6_faddr = addr->sin6.sin6_addr;
7287 tcp_hc_updatemtu(&inc, (u_long)mtu);
7291 sctp_hc_get_mtu(union sctp_sockstore *addr, uint16_t fibnum)
7293 struct in_conninfo inc;
7295 memset(&inc, 0, sizeof(struct in_conninfo));
7296 inc.inc_fibnum = fibnum;
7297 switch (addr->sa.sa_family) {
7300 inc.inc_faddr = addr->sin.sin_addr;
7305 inc.inc_flags |= INC_ISIPV6;
7306 inc.inc6_faddr = addr->sin6.sin6_addr;
7312 return ((uint32_t)tcp_hc_getmtu(&inc));