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>/* for sctp_deliver_data() */
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->max_init_times = inp->sctp_ep.max_init_times;
1046 asoc->max_send_times = inp->sctp_ep.max_send_times;
1047 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
1048 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
1049 asoc->free_chunk_cnt = 0;
1051 asoc->iam_blocking = 0;
1052 asoc->context = inp->sctp_context;
1053 asoc->local_strreset_support = inp->local_strreset_support;
1054 asoc->def_send = inp->def_send;
1055 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1056 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
1057 asoc->pr_sctp_cnt = 0;
1058 asoc->total_output_queue_size = 0;
1060 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1061 asoc->scope.ipv6_addr_legal = 1;
1062 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1063 asoc->scope.ipv4_addr_legal = 1;
1065 asoc->scope.ipv4_addr_legal = 0;
1068 asoc->scope.ipv6_addr_legal = 0;
1069 asoc->scope.ipv4_addr_legal = 1;
1072 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1073 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1075 asoc->smallest_mtu = inp->sctp_frag_point;
1076 asoc->minrto = inp->sctp_ep.sctp_minrto;
1077 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1079 asoc->stream_locked_on = 0;
1080 asoc->ecn_echo_cnt_onq = 0;
1081 asoc->stream_locked = 0;
1083 asoc->send_sack = 1;
1085 LIST_INIT(&asoc->sctp_restricted_addrs);
1087 TAILQ_INIT(&asoc->nets);
1088 TAILQ_INIT(&asoc->pending_reply_queue);
1089 TAILQ_INIT(&asoc->asconf_ack_sent);
1090 /* Setup to fill the hb random cache at first HB */
1091 asoc->hb_random_idx = 4;
1093 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1095 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1096 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1098 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1099 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1102 * Now the stream parameters, here we allocate space for all streams
1103 * that we request by default.
1105 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1107 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1108 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1110 if (asoc->strmout == NULL) {
1111 /* big trouble no memory */
1112 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1115 for (i = 0; i < asoc->streamoutcnt; i++) {
1117 * inbound side must be set to 0xffff, also NOTE when we get
1118 * the INIT-ACK back (for INIT sender) we MUST reduce the
1119 * count (streamoutcnt) but first check if we sent to any of
1120 * the upper streams that were dropped (if some were). Those
1121 * that were dropped must be notified to the upper layer as
1124 asoc->strmout[i].next_mid_ordered = 0;
1125 asoc->strmout[i].next_mid_unordered = 0;
1126 TAILQ_INIT(&asoc->strmout[i].outqueue);
1127 asoc->strmout[i].chunks_on_queues = 0;
1128 #if defined(SCTP_DETAILED_STR_STATS)
1129 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1130 asoc->strmout[i].abandoned_sent[j] = 0;
1131 asoc->strmout[i].abandoned_unsent[j] = 0;
1134 asoc->strmout[i].abandoned_sent[0] = 0;
1135 asoc->strmout[i].abandoned_unsent[0] = 0;
1137 asoc->strmout[i].sid = i;
1138 asoc->strmout[i].last_msg_incomplete = 0;
1139 asoc->strmout[i].state = SCTP_STREAM_OPENING;
1140 asoc->ss_functions.sctp_ss_init_stream(stcb, &asoc->strmout[i], NULL);
1142 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1144 /* Now the mapping array */
1145 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1146 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1148 if (asoc->mapping_array == NULL) {
1149 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1150 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1153 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1154 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1156 if (asoc->nr_mapping_array == NULL) {
1157 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1158 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1159 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1162 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1164 /* Now the init of the other outqueues */
1165 TAILQ_INIT(&asoc->free_chunks);
1166 TAILQ_INIT(&asoc->control_send_queue);
1167 TAILQ_INIT(&asoc->asconf_send_queue);
1168 TAILQ_INIT(&asoc->send_queue);
1169 TAILQ_INIT(&asoc->sent_queue);
1170 TAILQ_INIT(&asoc->resetHead);
1171 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1172 TAILQ_INIT(&asoc->asconf_queue);
1173 /* authentication fields */
1174 asoc->authinfo.random = NULL;
1175 asoc->authinfo.active_keyid = 0;
1176 asoc->authinfo.assoc_key = NULL;
1177 asoc->authinfo.assoc_keyid = 0;
1178 asoc->authinfo.recv_key = NULL;
1179 asoc->authinfo.recv_keyid = 0;
1180 LIST_INIT(&asoc->shared_keys);
1181 asoc->marked_retrans = 0;
1182 asoc->port = inp->sctp_ep.port;
1186 asoc->timoshutdown = 0;
1187 asoc->timoheartbeat = 0;
1188 asoc->timocookie = 0;
1189 asoc->timoshutdownack = 0;
1190 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1191 asoc->discontinuity_time = asoc->start_time;
1192 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1193 asoc->abandoned_unsent[i] = 0;
1194 asoc->abandoned_sent[i] = 0;
1197 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1198 * freed later when the association is freed.
1204 sctp_print_mapping_array(struct sctp_association *asoc)
1206 unsigned int i, limit;
1208 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1209 asoc->mapping_array_size,
1210 asoc->mapping_array_base_tsn,
1211 asoc->cumulative_tsn,
1212 asoc->highest_tsn_inside_map,
1213 asoc->highest_tsn_inside_nr_map);
1214 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1215 if (asoc->mapping_array[limit - 1] != 0) {
1219 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1220 for (i = 0; i < limit; i++) {
1221 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1225 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1226 if (asoc->nr_mapping_array[limit - 1]) {
1230 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1231 for (i = 0; i < limit; i++) {
1232 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1239 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1241 /* mapping array needs to grow */
1242 uint8_t *new_array1, *new_array2;
1245 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1246 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1247 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1248 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1249 /* can't get more, forget it */
1250 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1252 SCTP_FREE(new_array1, SCTP_M_MAP);
1255 SCTP_FREE(new_array2, SCTP_M_MAP);
1259 memset(new_array1, 0, new_size);
1260 memset(new_array2, 0, new_size);
1261 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1262 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1263 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1264 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1265 asoc->mapping_array = new_array1;
1266 asoc->nr_mapping_array = new_array2;
1267 asoc->mapping_array_size = new_size;
1273 sctp_iterator_work(struct sctp_iterator *it)
1275 int iteration_count = 0;
1278 struct sctp_inpcb *tinp;
1280 SCTP_INP_INFO_RLOCK();
1281 SCTP_ITERATOR_LOCK();
1282 sctp_it_ctl.cur_it = it;
1284 SCTP_INP_RLOCK(it->inp);
1285 SCTP_INP_DECR_REF(it->inp);
1287 if (it->inp == NULL) {
1288 /* iterator is complete */
1290 sctp_it_ctl.cur_it = NULL;
1291 SCTP_ITERATOR_UNLOCK();
1292 SCTP_INP_INFO_RUNLOCK();
1293 if (it->function_atend != NULL) {
1294 (*it->function_atend) (it->pointer, it->val);
1296 SCTP_FREE(it, SCTP_M_ITER);
1303 SCTP_INP_RLOCK(it->inp);
1305 while (((it->pcb_flags) &&
1306 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1307 ((it->pcb_features) &&
1308 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1309 /* endpoint flags or features don't match, so keep looking */
1310 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1311 SCTP_INP_RUNLOCK(it->inp);
1312 goto done_with_iterator;
1315 it->inp = LIST_NEXT(it->inp, sctp_list);
1316 SCTP_INP_RUNLOCK(tinp);
1317 if (it->inp == NULL) {
1318 goto done_with_iterator;
1320 SCTP_INP_RLOCK(it->inp);
1322 /* now go through each assoc which is in the desired state */
1323 if (it->done_current_ep == 0) {
1324 if (it->function_inp != NULL)
1325 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1326 it->done_current_ep = 1;
1328 if (it->stcb == NULL) {
1329 /* run the per instance function */
1330 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1332 if ((inp_skip) || it->stcb == NULL) {
1333 if (it->function_inp_end != NULL) {
1334 inp_skip = (*it->function_inp_end) (it->inp,
1338 SCTP_INP_RUNLOCK(it->inp);
1342 SCTP_TCB_LOCK(it->stcb);
1343 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1344 /* not in the right state... keep looking */
1345 SCTP_TCB_UNLOCK(it->stcb);
1348 /* see if we have limited out the iterator loop */
1350 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1351 /* Pause to let others grab the lock */
1352 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1353 SCTP_TCB_UNLOCK(it->stcb);
1354 SCTP_INP_INCR_REF(it->inp);
1355 SCTP_INP_RUNLOCK(it->inp);
1356 SCTP_ITERATOR_UNLOCK();
1357 SCTP_INP_INFO_RUNLOCK();
1358 SCTP_INP_INFO_RLOCK();
1359 SCTP_ITERATOR_LOCK();
1360 if (sctp_it_ctl.iterator_flags) {
1361 /* We won't be staying here */
1362 SCTP_INP_DECR_REF(it->inp);
1363 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1364 if (sctp_it_ctl.iterator_flags &
1365 SCTP_ITERATOR_STOP_CUR_IT) {
1366 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1367 goto done_with_iterator;
1369 if (sctp_it_ctl.iterator_flags &
1370 SCTP_ITERATOR_STOP_CUR_INP) {
1371 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1374 /* If we reach here huh? */
1375 SCTP_PRINTF("Unknown it ctl flag %x\n",
1376 sctp_it_ctl.iterator_flags);
1377 sctp_it_ctl.iterator_flags = 0;
1379 SCTP_INP_RLOCK(it->inp);
1380 SCTP_INP_DECR_REF(it->inp);
1381 SCTP_TCB_LOCK(it->stcb);
1382 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1383 iteration_count = 0;
1385 /* run function on this one */
1386 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1389 * we lie here, it really needs to have its own type but
1390 * first I must verify that this won't effect things :-0
1392 if (it->no_chunk_output == 0)
1393 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1395 SCTP_TCB_UNLOCK(it->stcb);
1397 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1398 if (it->stcb == NULL) {
1399 /* Run last function */
1400 if (it->function_inp_end != NULL) {
1401 inp_skip = (*it->function_inp_end) (it->inp,
1407 SCTP_INP_RUNLOCK(it->inp);
1409 /* done with all assocs on this endpoint, move on to next endpoint */
1410 it->done_current_ep = 0;
1411 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1414 it->inp = LIST_NEXT(it->inp, sctp_list);
1416 if (it->inp == NULL) {
1417 goto done_with_iterator;
1419 goto select_a_new_ep;
1423 sctp_iterator_worker(void)
1425 struct sctp_iterator *it, *nit;
1427 /* This function is called with the WQ lock in place */
1429 sctp_it_ctl.iterator_running = 1;
1430 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1431 /* now lets work on this one */
1432 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1433 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1434 CURVNET_SET(it->vn);
1435 sctp_iterator_work(it);
1437 SCTP_IPI_ITERATOR_WQ_LOCK();
1438 /* sa_ignore FREED_MEMORY */
1440 sctp_it_ctl.iterator_running = 0;
1446 sctp_handle_addr_wq(void)
1448 /* deal with the ADDR wq from the rtsock calls */
1449 struct sctp_laddr *wi, *nwi;
1450 struct sctp_asconf_iterator *asc;
1452 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1453 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1455 /* Try later, no memory */
1456 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1457 (struct sctp_inpcb *)NULL,
1458 (struct sctp_tcb *)NULL,
1459 (struct sctp_nets *)NULL);
1462 LIST_INIT(&asc->list_of_work);
1465 SCTP_WQ_ADDR_LOCK();
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);
1471 SCTP_WQ_ADDR_UNLOCK();
1473 if (asc->cnt == 0) {
1474 SCTP_FREE(asc, SCTP_M_ASC_IT);
1478 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
1479 sctp_asconf_iterator_stcb,
1480 NULL, /* No ep end for boundall */
1481 SCTP_PCB_FLAGS_BOUNDALL,
1482 SCTP_PCB_ANY_FEATURES,
1483 SCTP_ASOC_ANY_STATE,
1485 sctp_asconf_iterator_end, NULL, 0);
1487 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
1489 * Freeing if we are stopping or put back on the
1492 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
1493 sctp_asconf_iterator_end(asc, 0);
1495 SCTP_WQ_ADDR_LOCK();
1496 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
1497 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
1499 SCTP_WQ_ADDR_UNLOCK();
1500 SCTP_FREE(asc, SCTP_M_ASC_IT);
1507 sctp_timeout_handler(void *t)
1509 struct sctp_inpcb *inp;
1510 struct sctp_tcb *stcb;
1511 struct sctp_nets *net;
1512 struct sctp_timer *tmr;
1513 struct mbuf *op_err;
1514 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1520 tmr = (struct sctp_timer *)t;
1521 inp = (struct sctp_inpcb *)tmr->ep;
1522 stcb = (struct sctp_tcb *)tmr->tcb;
1523 net = (struct sctp_nets *)tmr->net;
1524 CURVNET_SET((struct vnet *)tmr->vnet);
1527 #ifdef SCTP_AUDITING_ENABLED
1528 sctp_audit_log(0xF0, (uint8_t)tmr->type);
1529 sctp_auditing(3, inp, stcb, net);
1532 /* sanity checks... */
1533 if (tmr->self != (void *)tmr) {
1535 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1541 tmr->stopped_from = 0xa001;
1542 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1544 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1550 tmr->stopped_from = 0xa002;
1551 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1555 /* if this is an iterator timeout, get the struct and clear inp */
1556 tmr->stopped_from = 0xa003;
1558 SCTP_INP_INCR_REF(inp);
1559 if ((inp->sctp_socket == NULL) &&
1560 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1561 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1562 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1563 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1564 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1565 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1566 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1567 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1568 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1570 SCTP_INP_DECR_REF(inp);
1575 tmr->stopped_from = 0xa004;
1577 atomic_add_int(&stcb->asoc.refcnt, 1);
1578 if (stcb->asoc.state == 0) {
1579 atomic_add_int(&stcb->asoc.refcnt, -1);
1581 SCTP_INP_DECR_REF(inp);
1588 tmr->stopped_from = 0xa005;
1589 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type);
1590 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1592 SCTP_INP_DECR_REF(inp);
1595 atomic_add_int(&stcb->asoc.refcnt, -1);
1600 tmr->stopped_from = 0xa006;
1603 SCTP_TCB_LOCK(stcb);
1604 atomic_add_int(&stcb->asoc.refcnt, -1);
1605 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1606 ((stcb->asoc.state == 0) ||
1607 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1608 SCTP_TCB_UNLOCK(stcb);
1610 SCTP_INP_DECR_REF(inp);
1616 /* record in stopped what t-o occurred */
1617 tmr->stopped_from = type;
1619 /* mark as being serviced now */
1620 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1622 * Callout has been rescheduled.
1626 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1628 * Not active, so no action.
1632 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1634 /* call the handler for the appropriate timer type */
1636 case SCTP_TIMER_TYPE_ZERO_COPY:
1640 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1641 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1644 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1648 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1649 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1652 case SCTP_TIMER_TYPE_ADDR_WQ:
1653 sctp_handle_addr_wq();
1655 case SCTP_TIMER_TYPE_SEND:
1656 if ((stcb == NULL) || (inp == NULL)) {
1659 SCTP_STAT_INCR(sctps_timodata);
1660 stcb->asoc.timodata++;
1661 stcb->asoc.num_send_timers_up--;
1662 if (stcb->asoc.num_send_timers_up < 0) {
1663 stcb->asoc.num_send_timers_up = 0;
1665 SCTP_TCB_LOCK_ASSERT(stcb);
1666 if (sctp_t3rxt_timer(inp, stcb, net)) {
1667 /* no need to unlock on tcb its gone */
1671 SCTP_TCB_LOCK_ASSERT(stcb);
1672 #ifdef SCTP_AUDITING_ENABLED
1673 sctp_auditing(4, inp, stcb, net);
1675 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1676 if ((stcb->asoc.num_send_timers_up == 0) &&
1677 (stcb->asoc.sent_queue_cnt > 0)) {
1678 struct sctp_tmit_chunk *chk;
1681 * safeguard. If there on some on the sent queue
1682 * somewhere but no timers running something is
1683 * wrong... so we start a timer on the first chunk
1684 * on the send queue on whatever net it is sent to.
1686 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1687 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1691 case SCTP_TIMER_TYPE_INIT:
1692 if ((stcb == NULL) || (inp == NULL)) {
1695 SCTP_STAT_INCR(sctps_timoinit);
1696 stcb->asoc.timoinit++;
1697 if (sctp_t1init_timer(inp, stcb, net)) {
1698 /* no need to unlock on tcb its gone */
1701 /* We do output but not here */
1704 case SCTP_TIMER_TYPE_RECV:
1705 if ((stcb == NULL) || (inp == NULL)) {
1708 SCTP_STAT_INCR(sctps_timosack);
1709 stcb->asoc.timosack++;
1710 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1711 #ifdef SCTP_AUDITING_ENABLED
1712 sctp_auditing(4, inp, stcb, net);
1714 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1716 case SCTP_TIMER_TYPE_SHUTDOWN:
1717 if ((stcb == NULL) || (inp == NULL)) {
1720 if (sctp_shutdown_timer(inp, stcb, net)) {
1721 /* no need to unlock on tcb its gone */
1724 SCTP_STAT_INCR(sctps_timoshutdown);
1725 stcb->asoc.timoshutdown++;
1726 #ifdef SCTP_AUDITING_ENABLED
1727 sctp_auditing(4, inp, stcb, net);
1729 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1731 case SCTP_TIMER_TYPE_HEARTBEAT:
1732 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1735 SCTP_STAT_INCR(sctps_timoheartbeat);
1736 stcb->asoc.timoheartbeat++;
1737 if (sctp_heartbeat_timer(inp, stcb, net)) {
1738 /* no need to unlock on tcb its gone */
1741 #ifdef SCTP_AUDITING_ENABLED
1742 sctp_auditing(4, inp, stcb, net);
1744 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1745 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1746 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1749 case SCTP_TIMER_TYPE_COOKIE:
1750 if ((stcb == NULL) || (inp == NULL)) {
1753 if (sctp_cookie_timer(inp, stcb, net)) {
1754 /* no need to unlock on tcb its gone */
1757 SCTP_STAT_INCR(sctps_timocookie);
1758 stcb->asoc.timocookie++;
1759 #ifdef SCTP_AUDITING_ENABLED
1760 sctp_auditing(4, inp, stcb, net);
1763 * We consider T3 and Cookie timer pretty much the same with
1764 * respect to where from in chunk_output.
1766 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1768 case SCTP_TIMER_TYPE_NEWCOOKIE:
1776 SCTP_STAT_INCR(sctps_timosecret);
1777 (void)SCTP_GETTIME_TIMEVAL(&tv);
1778 SCTP_INP_WLOCK(inp);
1779 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1780 inp->sctp_ep.last_secret_number =
1781 inp->sctp_ep.current_secret_number;
1782 inp->sctp_ep.current_secret_number++;
1783 if (inp->sctp_ep.current_secret_number >=
1784 SCTP_HOW_MANY_SECRETS) {
1785 inp->sctp_ep.current_secret_number = 0;
1787 secret = (int)inp->sctp_ep.current_secret_number;
1788 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1789 inp->sctp_ep.secret_key[secret][i] =
1790 sctp_select_initial_TSN(&inp->sctp_ep);
1792 SCTP_INP_WUNLOCK(inp);
1793 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1797 case SCTP_TIMER_TYPE_PATHMTURAISE:
1798 if ((stcb == NULL) || (inp == NULL)) {
1801 SCTP_STAT_INCR(sctps_timopathmtu);
1802 sctp_pathmtu_timer(inp, stcb, net);
1805 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1806 if ((stcb == NULL) || (inp == NULL)) {
1809 if (sctp_shutdownack_timer(inp, stcb, net)) {
1810 /* no need to unlock on tcb its gone */
1813 SCTP_STAT_INCR(sctps_timoshutdownack);
1814 stcb->asoc.timoshutdownack++;
1815 #ifdef SCTP_AUDITING_ENABLED
1816 sctp_auditing(4, inp, stcb, net);
1818 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1820 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1821 if ((stcb == NULL) || (inp == NULL)) {
1824 SCTP_STAT_INCR(sctps_timoshutdownguard);
1825 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
1826 "Shutdown guard timer expired");
1827 sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
1828 /* no need to unlock on tcb its gone */
1831 case SCTP_TIMER_TYPE_STRRESET:
1832 if ((stcb == NULL) || (inp == NULL)) {
1835 if (sctp_strreset_timer(inp, stcb, net)) {
1836 /* no need to unlock on tcb its gone */
1839 SCTP_STAT_INCR(sctps_timostrmrst);
1840 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1842 case SCTP_TIMER_TYPE_ASCONF:
1843 if ((stcb == NULL) || (inp == NULL)) {
1846 if (sctp_asconf_timer(inp, stcb, net)) {
1847 /* no need to unlock on tcb its gone */
1850 SCTP_STAT_INCR(sctps_timoasconf);
1851 #ifdef SCTP_AUDITING_ENABLED
1852 sctp_auditing(4, inp, stcb, net);
1854 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1856 case SCTP_TIMER_TYPE_PRIM_DELETED:
1857 if ((stcb == NULL) || (inp == NULL)) {
1860 sctp_delete_prim_timer(inp, stcb, net);
1861 SCTP_STAT_INCR(sctps_timodelprim);
1864 case SCTP_TIMER_TYPE_AUTOCLOSE:
1865 if ((stcb == NULL) || (inp == NULL)) {
1868 SCTP_STAT_INCR(sctps_timoautoclose);
1869 sctp_autoclose_timer(inp, stcb, net);
1870 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1873 case SCTP_TIMER_TYPE_ASOCKILL:
1874 if ((stcb == NULL) || (inp == NULL)) {
1877 SCTP_STAT_INCR(sctps_timoassockill);
1878 /* Can we free it yet? */
1879 SCTP_INP_DECR_REF(inp);
1880 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
1881 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1882 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1883 so = SCTP_INP_SO(inp);
1884 atomic_add_int(&stcb->asoc.refcnt, 1);
1885 SCTP_TCB_UNLOCK(stcb);
1886 SCTP_SOCKET_LOCK(so, 1);
1887 SCTP_TCB_LOCK(stcb);
1888 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1890 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
1891 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1892 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1893 SCTP_SOCKET_UNLOCK(so, 1);
1896 * free asoc, always unlocks (or destroy's) so prevent
1897 * duplicate unlock or unlock of a free mtx :-0
1901 case SCTP_TIMER_TYPE_INPKILL:
1902 SCTP_STAT_INCR(sctps_timoinpkill);
1907 * special case, take away our increment since WE are the
1910 SCTP_INP_DECR_REF(inp);
1911 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
1912 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1913 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1914 SCTP_CALLED_FROM_INPKILL_TIMER);
1918 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1922 #ifdef SCTP_AUDITING_ENABLED
1923 sctp_audit_log(0xF1, (uint8_t)type);
1925 sctp_auditing(5, inp, stcb, net);
1927 if ((did_output) && stcb) {
1929 * Now we need to clean up the control chunk chain if an
1930 * ECNE is on it. It must be marked as UNSENT again so next
1931 * call will continue to send it until such time that we get
1932 * a CWR, to remove it. It is, however, less likely that we
1933 * will find a ecn echo on the chain though.
1935 sctp_fix_ecn_echo(&stcb->asoc);
1939 SCTP_TCB_UNLOCK(stcb);
1943 SCTP_INP_DECR_REF(inp);
1946 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type);
1951 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1952 struct sctp_nets *net)
1955 struct sctp_timer *tmr;
1957 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1962 SCTP_TCB_LOCK_ASSERT(stcb);
1965 case SCTP_TIMER_TYPE_ZERO_COPY:
1966 tmr = &inp->sctp_ep.zero_copy_timer;
1967 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1969 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1970 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1971 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1973 case SCTP_TIMER_TYPE_ADDR_WQ:
1974 /* Only 1 tick away :-) */
1975 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1976 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1978 case SCTP_TIMER_TYPE_SEND:
1979 /* Here we use the RTO timer */
1983 if ((stcb == NULL) || (net == NULL)) {
1986 tmr = &net->rxt_timer;
1987 if (net->RTO == 0) {
1988 rto_val = stcb->asoc.initial_rto;
1992 to_ticks = MSEC_TO_TICKS(rto_val);
1995 case SCTP_TIMER_TYPE_INIT:
1997 * Here we use the INIT timer default usually about 1
2000 if ((stcb == NULL) || (net == NULL)) {
2003 tmr = &net->rxt_timer;
2004 if (net->RTO == 0) {
2005 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2007 to_ticks = MSEC_TO_TICKS(net->RTO);
2010 case SCTP_TIMER_TYPE_RECV:
2012 * Here we use the Delayed-Ack timer value from the inp
2013 * ususually about 200ms.
2018 tmr = &stcb->asoc.dack_timer;
2019 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
2021 case SCTP_TIMER_TYPE_SHUTDOWN:
2022 /* Here we use the RTO of the destination. */
2023 if ((stcb == NULL) || (net == NULL)) {
2026 if (net->RTO == 0) {
2027 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2029 to_ticks = MSEC_TO_TICKS(net->RTO);
2031 tmr = &net->rxt_timer;
2033 case SCTP_TIMER_TYPE_HEARTBEAT:
2035 * the net is used here so that we can add in the RTO. Even
2036 * though we use a different timer. We also add the HB timer
2037 * PLUS a random jitter.
2039 if ((stcb == NULL) || (net == NULL)) {
2045 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2046 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2049 if (net->RTO == 0) {
2050 to_ticks = stcb->asoc.initial_rto;
2052 to_ticks = net->RTO;
2054 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2055 jitter = rndval % to_ticks;
2056 if (jitter >= (to_ticks >> 1)) {
2057 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
2059 to_ticks = to_ticks - jitter;
2061 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2062 !(net->dest_state & SCTP_ADDR_PF)) {
2063 to_ticks += net->heart_beat_delay;
2066 * Now we must convert the to_ticks that are now in
2069 to_ticks = MSEC_TO_TICKS(to_ticks);
2070 tmr = &net->hb_timer;
2073 case SCTP_TIMER_TYPE_COOKIE:
2075 * Here we can use the RTO timer from the network since one
2076 * RTT was compelete. If a retran happened then we will be
2077 * using the RTO initial value.
2079 if ((stcb == NULL) || (net == NULL)) {
2082 if (net->RTO == 0) {
2083 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2085 to_ticks = MSEC_TO_TICKS(net->RTO);
2087 tmr = &net->rxt_timer;
2089 case SCTP_TIMER_TYPE_NEWCOOKIE:
2091 * nothing needed but the endpoint here ususually about 60
2094 tmr = &inp->sctp_ep.signature_change;
2095 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2097 case SCTP_TIMER_TYPE_ASOCKILL:
2101 tmr = &stcb->asoc.strreset_timer;
2102 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2104 case SCTP_TIMER_TYPE_INPKILL:
2106 * The inp is setup to die. We re-use the signature_chage
2107 * timer since that has stopped and we are in the GONE
2110 tmr = &inp->sctp_ep.signature_change;
2111 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2113 case SCTP_TIMER_TYPE_PATHMTURAISE:
2115 * Here we use the value found in the EP for PMTU ususually
2118 if ((stcb == NULL) || (net == NULL)) {
2121 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2124 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2125 tmr = &net->pmtu_timer;
2127 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2128 /* Here we use the RTO of the destination */
2129 if ((stcb == NULL) || (net == NULL)) {
2132 if (net->RTO == 0) {
2133 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2135 to_ticks = MSEC_TO_TICKS(net->RTO);
2137 tmr = &net->rxt_timer;
2139 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2141 * Here we use the endpoints shutdown guard timer usually
2147 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2148 to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto);
2150 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2152 tmr = &stcb->asoc.shut_guard_timer;
2154 case SCTP_TIMER_TYPE_STRRESET:
2156 * Here the timer comes from the stcb but its value is from
2159 if ((stcb == NULL) || (net == NULL)) {
2162 if (net->RTO == 0) {
2163 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2165 to_ticks = MSEC_TO_TICKS(net->RTO);
2167 tmr = &stcb->asoc.strreset_timer;
2169 case SCTP_TIMER_TYPE_ASCONF:
2171 * Here the timer comes from the stcb but its value is from
2174 if ((stcb == NULL) || (net == NULL)) {
2177 if (net->RTO == 0) {
2178 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2180 to_ticks = MSEC_TO_TICKS(net->RTO);
2182 tmr = &stcb->asoc.asconf_timer;
2184 case SCTP_TIMER_TYPE_PRIM_DELETED:
2185 if ((stcb == NULL) || (net != NULL)) {
2188 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2189 tmr = &stcb->asoc.delete_prim_timer;
2191 case SCTP_TIMER_TYPE_AUTOCLOSE:
2195 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2197 * Really an error since stcb is NOT set to
2202 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2203 tmr = &stcb->asoc.autoclose_timer;
2206 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2211 if ((to_ticks <= 0) || (tmr == NULL)) {
2212 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2213 __func__, t_type, to_ticks, (void *)tmr);
2216 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2218 * we do NOT allow you to have it already running. if it is
2219 * we leave the current one up unchanged
2223 /* At this point we can proceed */
2224 if (t_type == SCTP_TIMER_TYPE_SEND) {
2225 stcb->asoc.num_send_timers_up++;
2227 tmr->stopped_from = 0;
2229 tmr->ep = (void *)inp;
2230 tmr->tcb = (void *)stcb;
2231 tmr->net = (void *)net;
2232 tmr->self = (void *)tmr;
2233 tmr->vnet = (void *)curvnet;
2234 tmr->ticks = sctp_get_tick_count();
2235 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2240 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2241 struct sctp_nets *net, uint32_t from)
2243 struct sctp_timer *tmr;
2245 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2251 SCTP_TCB_LOCK_ASSERT(stcb);
2254 case SCTP_TIMER_TYPE_ZERO_COPY:
2255 tmr = &inp->sctp_ep.zero_copy_timer;
2257 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2258 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2260 case SCTP_TIMER_TYPE_ADDR_WQ:
2261 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2263 case SCTP_TIMER_TYPE_SEND:
2264 if ((stcb == NULL) || (net == NULL)) {
2267 tmr = &net->rxt_timer;
2269 case SCTP_TIMER_TYPE_INIT:
2270 if ((stcb == NULL) || (net == NULL)) {
2273 tmr = &net->rxt_timer;
2275 case SCTP_TIMER_TYPE_RECV:
2279 tmr = &stcb->asoc.dack_timer;
2281 case SCTP_TIMER_TYPE_SHUTDOWN:
2282 if ((stcb == NULL) || (net == NULL)) {
2285 tmr = &net->rxt_timer;
2287 case SCTP_TIMER_TYPE_HEARTBEAT:
2288 if ((stcb == NULL) || (net == NULL)) {
2291 tmr = &net->hb_timer;
2293 case SCTP_TIMER_TYPE_COOKIE:
2294 if ((stcb == NULL) || (net == NULL)) {
2297 tmr = &net->rxt_timer;
2299 case SCTP_TIMER_TYPE_NEWCOOKIE:
2300 /* nothing needed but the endpoint here */
2301 tmr = &inp->sctp_ep.signature_change;
2303 * We re-use the newcookie timer for the INP kill timer. We
2304 * must assure that we do not kill it by accident.
2307 case SCTP_TIMER_TYPE_ASOCKILL:
2309 * Stop the asoc kill timer.
2314 tmr = &stcb->asoc.strreset_timer;
2317 case SCTP_TIMER_TYPE_INPKILL:
2319 * The inp is setup to die. We re-use the signature_chage
2320 * timer since that has stopped and we are in the GONE
2323 tmr = &inp->sctp_ep.signature_change;
2325 case SCTP_TIMER_TYPE_PATHMTURAISE:
2326 if ((stcb == NULL) || (net == NULL)) {
2329 tmr = &net->pmtu_timer;
2331 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2332 if ((stcb == NULL) || (net == NULL)) {
2335 tmr = &net->rxt_timer;
2337 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2341 tmr = &stcb->asoc.shut_guard_timer;
2343 case SCTP_TIMER_TYPE_STRRESET:
2347 tmr = &stcb->asoc.strreset_timer;
2349 case SCTP_TIMER_TYPE_ASCONF:
2353 tmr = &stcb->asoc.asconf_timer;
2355 case SCTP_TIMER_TYPE_PRIM_DELETED:
2359 tmr = &stcb->asoc.delete_prim_timer;
2361 case SCTP_TIMER_TYPE_AUTOCLOSE:
2365 tmr = &stcb->asoc.autoclose_timer;
2368 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2375 if ((tmr->type != t_type) && tmr->type) {
2377 * Ok we have a timer that is under joint use. Cookie timer
2378 * per chance with the SEND timer. We therefore are NOT
2379 * running the timer that the caller wants stopped. So just
2384 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2385 stcb->asoc.num_send_timers_up--;
2386 if (stcb->asoc.num_send_timers_up < 0) {
2387 stcb->asoc.num_send_timers_up = 0;
2391 tmr->stopped_from = from;
2392 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2397 sctp_calculate_len(struct mbuf *m)
2404 tlen += SCTP_BUF_LEN(at);
2405 at = SCTP_BUF_NEXT(at);
2411 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2412 struct sctp_association *asoc, uint32_t mtu)
2415 * Reset the P-MTU size on this association, this involves changing
2416 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2417 * allow the DF flag to be cleared.
2419 struct sctp_tmit_chunk *chk;
2420 unsigned int eff_mtu, ovh;
2422 asoc->smallest_mtu = mtu;
2423 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2424 ovh = SCTP_MIN_OVERHEAD;
2426 ovh = SCTP_MIN_V4_OVERHEAD;
2428 eff_mtu = mtu - ovh;
2429 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2430 if (chk->send_size > eff_mtu) {
2431 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2434 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2435 if (chk->send_size > eff_mtu) {
2436 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2443 * given an association and starting time of the current RTT period return
2444 * RTO in number of msecs net should point to the current network
2448 sctp_calculate_rto(struct sctp_tcb *stcb,
2449 struct sctp_association *asoc,
2450 struct sctp_nets *net,
2451 struct timeval *told,
2452 int safe, int rtt_from_sack)
2455 * given an association and the starting time of the current RTT
2456 * period (in value1/value2) return RTO in number of msecs.
2458 int32_t rtt; /* RTT in ms */
2460 int first_measure = 0;
2461 struct timeval now, then, *old;
2463 /* Copy it out for sparc64 */
2464 if (safe == sctp_align_unsafe_makecopy) {
2466 memcpy(&then, told, sizeof(struct timeval));
2467 } else if (safe == sctp_align_safe_nocopy) {
2471 SCTP_PRINTF("Huh, bad rto calc call\n");
2474 /************************/
2475 /* 1. calculate new RTT */
2476 /************************/
2477 /* get the current time */
2478 if (stcb->asoc.use_precise_time) {
2479 (void)SCTP_GETPTIME_TIMEVAL(&now);
2481 (void)SCTP_GETTIME_TIMEVAL(&now);
2483 timevalsub(&now, old);
2484 /* store the current RTT in us */
2485 net->rtt = (uint64_t)1000000 *(uint64_t)now.tv_sec +
2486 (uint64_t)now.tv_usec;
2488 /* compute rtt in ms */
2489 rtt = (int32_t)(net->rtt / 1000);
2490 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2492 * Tell the CC module that a new update has just occurred
2495 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2498 * Do we need to determine the lan? We do this only on sacks i.e.
2499 * RTT being determined from data not non-data (HB/INIT->INITACK).
2501 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2502 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2503 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2504 net->lan_type = SCTP_LAN_INTERNET;
2506 net->lan_type = SCTP_LAN_LOCAL;
2509 /***************************/
2510 /* 2. update RTTVAR & SRTT */
2511 /***************************/
2513 * Compute the scaled average lastsa and the
2514 * scaled variance lastsv as described in van Jacobson
2515 * Paper "Congestion Avoidance and Control", Annex A.
2517 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2518 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2520 if (net->RTO_measured) {
2521 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2526 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2528 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2529 rto_logging(net, SCTP_LOG_RTTVAR);
2532 /* First RTO measurment */
2533 net->RTO_measured = 1;
2535 net->lastsa = rtt << SCTP_RTT_SHIFT;
2536 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2537 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2538 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2541 if (net->lastsv == 0) {
2542 net->lastsv = SCTP_CLOCK_GRANULARITY;
2544 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2545 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2546 (stcb->asoc.sat_network_lockout == 0)) {
2547 stcb->asoc.sat_network = 1;
2548 } else if ((!first_measure) && stcb->asoc.sat_network) {
2549 stcb->asoc.sat_network = 0;
2550 stcb->asoc.sat_network_lockout = 1;
2552 /* bound it, per C6/C7 in Section 5.3.1 */
2553 if (new_rto < stcb->asoc.minrto) {
2554 new_rto = stcb->asoc.minrto;
2556 if (new_rto > stcb->asoc.maxrto) {
2557 new_rto = stcb->asoc.maxrto;
2559 /* we are now returning the RTO */
2564 * return a pointer to a contiguous piece of data from the given mbuf chain
2565 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2566 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2567 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2570 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t *in_ptr)
2576 if ((off < 0) || (len <= 0))
2579 /* find the desired start location */
2580 while ((m != NULL) && (off > 0)) {
2581 if (off < SCTP_BUF_LEN(m))
2583 off -= SCTP_BUF_LEN(m);
2584 m = SCTP_BUF_NEXT(m);
2589 /* is the current mbuf large enough (eg. contiguous)? */
2590 if ((SCTP_BUF_LEN(m) - off) >= len) {
2591 return (mtod(m, caddr_t)+off);
2593 /* else, it spans more than one mbuf, so save a temp copy... */
2594 while ((m != NULL) && (len > 0)) {
2595 count = min(SCTP_BUF_LEN(m) - off, len);
2596 bcopy(mtod(m, caddr_t)+off, ptr, count);
2600 m = SCTP_BUF_NEXT(m);
2602 if ((m == NULL) && (len > 0))
2605 return ((caddr_t)in_ptr);
2611 struct sctp_paramhdr *
2612 sctp_get_next_param(struct mbuf *m,
2614 struct sctp_paramhdr *pull,
2617 /* This just provides a typed signature to Peter's Pull routine */
2618 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2624 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2626 struct mbuf *m_last;
2632 if (padlen <= M_TRAILINGSPACE(m)) {
2634 * The easy way. We hope the majority of the time we hit
2639 /* Hard way we must grow the mbuf chain */
2640 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2641 if (m_last == NULL) {
2644 SCTP_BUF_LEN(m_last) = 0;
2645 SCTP_BUF_NEXT(m_last) = NULL;
2646 SCTP_BUF_NEXT(m) = m_last;
2648 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2649 SCTP_BUF_LEN(m_last) += padlen;
2650 memset(dp, 0, padlen);
2655 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2657 /* find the last mbuf in chain and pad it */
2660 if (last_mbuf != NULL) {
2661 return (sctp_add_pad_tombuf(last_mbuf, padval));
2663 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2664 if (SCTP_BUF_NEXT(m_at) == NULL) {
2665 return (sctp_add_pad_tombuf(m_at, padval));
2673 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2674 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2675 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2680 struct mbuf *m_notify;
2681 struct sctp_assoc_change *sac;
2682 struct sctp_queued_to_read *control;
2683 unsigned int notif_len;
2686 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2693 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2694 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2695 if (abort != NULL) {
2696 abort_len = ntohs(abort->ch.chunk_length);
2700 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2701 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2702 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2703 notif_len += abort_len;
2705 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2706 if (m_notify == NULL) {
2707 /* Retry with smaller value. */
2708 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2709 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2710 if (m_notify == NULL) {
2714 SCTP_BUF_NEXT(m_notify) = NULL;
2715 sac = mtod(m_notify, struct sctp_assoc_change *);
2716 memset(sac, 0, notif_len);
2717 sac->sac_type = SCTP_ASSOC_CHANGE;
2719 sac->sac_length = sizeof(struct sctp_assoc_change);
2720 sac->sac_state = state;
2721 sac->sac_error = error;
2722 /* XXX verify these stream counts */
2723 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2724 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2725 sac->sac_assoc_id = sctp_get_associd(stcb);
2726 if (notif_len > sizeof(struct sctp_assoc_change)) {
2727 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2729 if (stcb->asoc.prsctp_supported == 1) {
2730 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2732 if (stcb->asoc.auth_supported == 1) {
2733 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2735 if (stcb->asoc.asconf_supported == 1) {
2736 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2738 if (stcb->asoc.idata_supported == 1) {
2739 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
2741 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2742 if (stcb->asoc.reconfig_supported == 1) {
2743 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2745 sac->sac_length += i;
2746 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2747 memcpy(sac->sac_info, abort, abort_len);
2748 sac->sac_length += abort_len;
2751 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2752 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2753 0, 0, stcb->asoc.context, 0, 0, 0,
2755 if (control != NULL) {
2756 control->length = SCTP_BUF_LEN(m_notify);
2757 /* not that we need this */
2758 control->tail_mbuf = m_notify;
2759 control->spec_flags = M_NOTIFICATION;
2760 sctp_add_to_readq(stcb->sctp_ep, stcb,
2762 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2765 sctp_m_freem(m_notify);
2769 * For 1-to-1 style sockets, we send up and error when an ABORT
2773 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2774 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2775 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2776 SOCK_LOCK(stcb->sctp_socket);
2778 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2779 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2780 stcb->sctp_socket->so_error = ECONNREFUSED;
2782 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2783 stcb->sctp_socket->so_error = ECONNRESET;
2786 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2787 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2788 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2789 stcb->sctp_socket->so_error = ETIMEDOUT;
2791 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2792 stcb->sctp_socket->so_error = ECONNABORTED;
2795 SOCK_UNLOCK(stcb->sctp_socket);
2797 /* Wake ANY sleepers */
2798 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2799 so = SCTP_INP_SO(stcb->sctp_ep);
2801 atomic_add_int(&stcb->asoc.refcnt, 1);
2802 SCTP_TCB_UNLOCK(stcb);
2803 SCTP_SOCKET_LOCK(so, 1);
2804 SCTP_TCB_LOCK(stcb);
2805 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2806 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2807 SCTP_SOCKET_UNLOCK(so, 1);
2812 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2813 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2814 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2815 socantrcvmore(stcb->sctp_socket);
2817 sorwakeup(stcb->sctp_socket);
2818 sowwakeup(stcb->sctp_socket);
2819 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2821 SCTP_SOCKET_UNLOCK(so, 1);
2827 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2828 struct sockaddr *sa, uint32_t error, int so_locked
2829 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2834 struct mbuf *m_notify;
2835 struct sctp_paddr_change *spc;
2836 struct sctp_queued_to_read *control;
2838 if ((stcb == NULL) ||
2839 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2840 /* event not enabled */
2843 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2844 if (m_notify == NULL)
2846 SCTP_BUF_LEN(m_notify) = 0;
2847 spc = mtod(m_notify, struct sctp_paddr_change *);
2848 memset(spc, 0, sizeof(struct sctp_paddr_change));
2849 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2851 spc->spc_length = sizeof(struct sctp_paddr_change);
2852 switch (sa->sa_family) {
2856 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
2857 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
2858 (struct sockaddr_in6 *)&spc->spc_aaddr);
2860 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2863 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2870 struct sockaddr_in6 *sin6;
2872 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2874 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2875 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2876 if (sin6->sin6_scope_id == 0) {
2877 /* recover scope_id for user */
2878 (void)sa6_recoverscope(sin6);
2880 /* clear embedded scope_id for user */
2881 in6_clearscope(&sin6->sin6_addr);
2891 spc->spc_state = state;
2892 spc->spc_error = error;
2893 spc->spc_assoc_id = sctp_get_associd(stcb);
2895 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2896 SCTP_BUF_NEXT(m_notify) = NULL;
2898 /* append to socket */
2899 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2900 0, 0, stcb->asoc.context, 0, 0, 0,
2902 if (control == NULL) {
2904 sctp_m_freem(m_notify);
2907 control->length = SCTP_BUF_LEN(m_notify);
2908 control->spec_flags = M_NOTIFICATION;
2909 /* not that we need this */
2910 control->tail_mbuf = m_notify;
2911 sctp_add_to_readq(stcb->sctp_ep, stcb,
2913 &stcb->sctp_socket->so_rcv, 1,
2914 SCTP_READ_LOCK_NOT_HELD,
2920 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2921 struct sctp_tmit_chunk *chk, int so_locked
2922 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2927 struct mbuf *m_notify;
2928 struct sctp_send_failed *ssf;
2929 struct sctp_send_failed_event *ssfe;
2930 struct sctp_queued_to_read *control;
2931 struct sctp_chunkhdr *chkhdr;
2932 int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len;
2934 if ((stcb == NULL) ||
2935 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2936 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2937 /* event not enabled */
2940 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2941 notifhdr_len = sizeof(struct sctp_send_failed_event);
2943 notifhdr_len = sizeof(struct sctp_send_failed);
2945 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
2946 if (m_notify == NULL)
2949 SCTP_BUF_LEN(m_notify) = notifhdr_len;
2950 if (stcb->asoc.idata_supported) {
2951 chkhdr_len = sizeof(struct sctp_idata_chunk);
2953 chkhdr_len = sizeof(struct sctp_data_chunk);
2955 /* Use some defaults in case we can't access the chunk header */
2956 if (chk->send_size >= chkhdr_len) {
2957 payload_len = chk->send_size - chkhdr_len;
2962 if (chk->data != NULL) {
2963 chkhdr = mtod(chk->data, struct sctp_chunkhdr *);
2964 if (chkhdr != NULL) {
2965 chk_len = ntohs(chkhdr->chunk_length);
2966 if ((chk_len >= chkhdr_len) &&
2967 (chk->send_size >= chk_len) &&
2968 (chk->send_size - chk_len < 4)) {
2969 padding_len = chk->send_size - chk_len;
2970 payload_len = chk->send_size - chkhdr_len - padding_len;
2974 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2975 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2976 memset(ssfe, 0, notifhdr_len);
2977 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2979 ssfe->ssfe_flags = SCTP_DATA_SENT;
2981 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2983 ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len);
2984 ssfe->ssfe_error = error;
2985 /* not exactly what the user sent in, but should be close :) */
2986 ssfe->ssfe_info.snd_sid = chk->rec.data.sid;
2987 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2988 ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid;
2989 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2990 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2991 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2993 ssf = mtod(m_notify, struct sctp_send_failed *);
2994 memset(ssf, 0, notifhdr_len);
2995 ssf->ssf_type = SCTP_SEND_FAILED;
2997 ssf->ssf_flags = SCTP_DATA_SENT;
2999 ssf->ssf_flags = SCTP_DATA_UNSENT;
3001 ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len);
3002 ssf->ssf_error = error;
3003 /* not exactly what the user sent in, but should be close :) */
3004 ssf->ssf_info.sinfo_stream = chk->rec.data.sid;
3005 ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid;
3006 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
3007 ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid;
3008 ssf->ssf_info.sinfo_context = chk->rec.data.context;
3009 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3010 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3012 if (chk->data != NULL) {
3013 /* Trim off the sctp chunk header (it should be there) */
3014 if (chk->send_size == chkhdr_len + payload_len + padding_len) {
3015 m_adj(chk->data, chkhdr_len);
3016 m_adj(chk->data, -padding_len);
3017 sctp_mbuf_crush(chk->data);
3018 chk->send_size -= (chkhdr_len + padding_len);
3021 SCTP_BUF_NEXT(m_notify) = chk->data;
3022 /* Steal off the mbuf */
3025 * For this case, we check the actual socket buffer, since the assoc
3026 * is going away we don't want to overfill the socket buffer for a
3029 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3030 sctp_m_freem(m_notify);
3033 /* append to socket */
3034 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3035 0, 0, stcb->asoc.context, 0, 0, 0,
3037 if (control == NULL) {
3039 sctp_m_freem(m_notify);
3042 control->spec_flags = M_NOTIFICATION;
3043 sctp_add_to_readq(stcb->sctp_ep, stcb,
3045 &stcb->sctp_socket->so_rcv, 1,
3046 SCTP_READ_LOCK_NOT_HELD,
3052 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3053 struct sctp_stream_queue_pending *sp, int so_locked
3054 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3059 struct mbuf *m_notify;
3060 struct sctp_send_failed *ssf;
3061 struct sctp_send_failed_event *ssfe;
3062 struct sctp_queued_to_read *control;
3065 if ((stcb == NULL) ||
3066 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3067 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3068 /* event not enabled */
3071 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3072 notifhdr_len = sizeof(struct sctp_send_failed_event);
3074 notifhdr_len = sizeof(struct sctp_send_failed);
3076 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3077 if (m_notify == NULL) {
3081 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3082 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3083 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3084 memset(ssfe, 0, notifhdr_len);
3085 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3086 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3087 ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length);
3088 ssfe->ssfe_error = error;
3089 /* not exactly what the user sent in, but should be close :) */
3090 ssfe->ssfe_info.snd_sid = sp->sid;
3091 if (sp->some_taken) {
3092 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3094 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3096 ssfe->ssfe_info.snd_ppid = sp->ppid;
3097 ssfe->ssfe_info.snd_context = sp->context;
3098 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3099 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3101 ssf = mtod(m_notify, struct sctp_send_failed *);
3102 memset(ssf, 0, notifhdr_len);
3103 ssf->ssf_type = SCTP_SEND_FAILED;
3104 ssf->ssf_flags = SCTP_DATA_UNSENT;
3105 ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length);
3106 ssf->ssf_error = error;
3107 /* not exactly what the user sent in, but should be close :) */
3108 ssf->ssf_info.sinfo_stream = sp->sid;
3109 ssf->ssf_info.sinfo_ssn = 0;
3110 if (sp->some_taken) {
3111 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3113 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3115 ssf->ssf_info.sinfo_ppid = sp->ppid;
3116 ssf->ssf_info.sinfo_context = sp->context;
3117 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3118 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3120 SCTP_BUF_NEXT(m_notify) = sp->data;
3122 /* Steal off the mbuf */
3125 * For this case, we check the actual socket buffer, since the assoc
3126 * is going away we don't want to overfill the socket buffer for a
3129 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3130 sctp_m_freem(m_notify);
3133 /* append to socket */
3134 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3135 0, 0, stcb->asoc.context, 0, 0, 0,
3137 if (control == NULL) {
3139 sctp_m_freem(m_notify);
3142 control->spec_flags = M_NOTIFICATION;
3143 sctp_add_to_readq(stcb->sctp_ep, stcb,
3145 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3151 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3153 struct mbuf *m_notify;
3154 struct sctp_adaptation_event *sai;
3155 struct sctp_queued_to_read *control;
3157 if ((stcb == NULL) ||
3158 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3159 /* event not enabled */
3162 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3163 if (m_notify == NULL)
3166 SCTP_BUF_LEN(m_notify) = 0;
3167 sai = mtod(m_notify, struct sctp_adaptation_event *);
3168 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3169 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3171 sai->sai_length = sizeof(struct sctp_adaptation_event);
3172 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3173 sai->sai_assoc_id = sctp_get_associd(stcb);
3175 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3176 SCTP_BUF_NEXT(m_notify) = NULL;
3178 /* append to socket */
3179 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3180 0, 0, stcb->asoc.context, 0, 0, 0,
3182 if (control == NULL) {
3184 sctp_m_freem(m_notify);
3187 control->length = SCTP_BUF_LEN(m_notify);
3188 control->spec_flags = M_NOTIFICATION;
3189 /* not that we need this */
3190 control->tail_mbuf = m_notify;
3191 sctp_add_to_readq(stcb->sctp_ep, stcb,
3193 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3196 /* This always must be called with the read-queue LOCKED in the INP */
3198 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3199 uint32_t val, int so_locked
3200 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3205 struct mbuf *m_notify;
3206 struct sctp_pdapi_event *pdapi;
3207 struct sctp_queued_to_read *control;
3210 if ((stcb == NULL) ||
3211 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3212 /* event not enabled */
3215 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3218 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3219 if (m_notify == NULL)
3222 SCTP_BUF_LEN(m_notify) = 0;
3223 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3224 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3225 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3226 pdapi->pdapi_flags = 0;
3227 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3228 pdapi->pdapi_indication = error;
3229 pdapi->pdapi_stream = (val >> 16);
3230 pdapi->pdapi_seq = (val & 0x0000ffff);
3231 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3233 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3234 SCTP_BUF_NEXT(m_notify) = NULL;
3235 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3236 0, 0, stcb->asoc.context, 0, 0, 0,
3238 if (control == NULL) {
3240 sctp_m_freem(m_notify);
3243 control->spec_flags = M_NOTIFICATION;
3244 control->length = SCTP_BUF_LEN(m_notify);
3245 /* not that we need this */
3246 control->tail_mbuf = m_notify;
3247 control->held_length = 0;
3248 control->length = 0;
3249 sb = &stcb->sctp_socket->so_rcv;
3250 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3251 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3253 sctp_sballoc(stcb, sb, m_notify);
3254 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3255 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3257 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3258 control->end_added = 1;
3259 if (stcb->asoc.control_pdapi)
3260 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3262 /* we really should not see this case */
3263 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3265 if (stcb->sctp_ep && stcb->sctp_socket) {
3266 /* This should always be the case */
3267 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3270 so = SCTP_INP_SO(stcb->sctp_ep);
3272 atomic_add_int(&stcb->asoc.refcnt, 1);
3273 SCTP_TCB_UNLOCK(stcb);
3274 SCTP_SOCKET_LOCK(so, 1);
3275 SCTP_TCB_LOCK(stcb);
3276 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3277 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3278 SCTP_SOCKET_UNLOCK(so, 1);
3283 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3284 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3286 SCTP_SOCKET_UNLOCK(so, 1);
3293 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3295 struct mbuf *m_notify;
3296 struct sctp_shutdown_event *sse;
3297 struct sctp_queued_to_read *control;
3300 * For TCP model AND UDP connected sockets we will send an error up
3301 * when an SHUTDOWN completes
3303 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3304 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3305 /* mark socket closed for read/write and wakeup! */
3306 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3309 so = SCTP_INP_SO(stcb->sctp_ep);
3310 atomic_add_int(&stcb->asoc.refcnt, 1);
3311 SCTP_TCB_UNLOCK(stcb);
3312 SCTP_SOCKET_LOCK(so, 1);
3313 SCTP_TCB_LOCK(stcb);
3314 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3315 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3316 SCTP_SOCKET_UNLOCK(so, 1);
3320 socantsendmore(stcb->sctp_socket);
3321 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3322 SCTP_SOCKET_UNLOCK(so, 1);
3325 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3326 /* event not enabled */
3329 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3330 if (m_notify == NULL)
3333 sse = mtod(m_notify, struct sctp_shutdown_event *);
3334 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3335 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3337 sse->sse_length = sizeof(struct sctp_shutdown_event);
3338 sse->sse_assoc_id = sctp_get_associd(stcb);
3340 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3341 SCTP_BUF_NEXT(m_notify) = NULL;
3343 /* append to socket */
3344 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3345 0, 0, stcb->asoc.context, 0, 0, 0,
3347 if (control == NULL) {
3349 sctp_m_freem(m_notify);
3352 control->spec_flags = M_NOTIFICATION;
3353 control->length = SCTP_BUF_LEN(m_notify);
3354 /* not that we need this */
3355 control->tail_mbuf = m_notify;
3356 sctp_add_to_readq(stcb->sctp_ep, stcb,
3358 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3362 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3364 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3369 struct mbuf *m_notify;
3370 struct sctp_sender_dry_event *event;
3371 struct sctp_queued_to_read *control;
3373 if ((stcb == NULL) ||
3374 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3375 /* event not enabled */
3378 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3379 if (m_notify == NULL) {
3383 SCTP_BUF_LEN(m_notify) = 0;
3384 event = mtod(m_notify, struct sctp_sender_dry_event *);
3385 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3386 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3387 event->sender_dry_flags = 0;
3388 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3389 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3391 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3392 SCTP_BUF_NEXT(m_notify) = NULL;
3394 /* append to socket */
3395 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3396 0, 0, stcb->asoc.context, 0, 0, 0,
3398 if (control == NULL) {
3400 sctp_m_freem(m_notify);
3403 control->length = SCTP_BUF_LEN(m_notify);
3404 control->spec_flags = M_NOTIFICATION;
3405 /* not that we need this */
3406 control->tail_mbuf = m_notify;
3407 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3408 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3413 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3415 struct mbuf *m_notify;
3416 struct sctp_queued_to_read *control;
3417 struct sctp_stream_change_event *stradd;
3419 if ((stcb == NULL) ||
3420 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3421 /* event not enabled */
3424 if ((stcb->asoc.peer_req_out) && flag) {
3425 /* Peer made the request, don't tell the local user */
3426 stcb->asoc.peer_req_out = 0;
3429 stcb->asoc.peer_req_out = 0;
3430 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3431 if (m_notify == NULL)
3434 SCTP_BUF_LEN(m_notify) = 0;
3435 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3436 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3437 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3438 stradd->strchange_flags = flag;
3439 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3440 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3441 stradd->strchange_instrms = numberin;
3442 stradd->strchange_outstrms = numberout;
3443 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3444 SCTP_BUF_NEXT(m_notify) = NULL;
3445 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3447 sctp_m_freem(m_notify);
3450 /* append to socket */
3451 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3452 0, 0, stcb->asoc.context, 0, 0, 0,
3454 if (control == NULL) {
3456 sctp_m_freem(m_notify);
3459 control->spec_flags = M_NOTIFICATION;
3460 control->length = SCTP_BUF_LEN(m_notify);
3461 /* not that we need this */
3462 control->tail_mbuf = m_notify;
3463 sctp_add_to_readq(stcb->sctp_ep, stcb,
3465 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3469 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3471 struct mbuf *m_notify;
3472 struct sctp_queued_to_read *control;
3473 struct sctp_assoc_reset_event *strasoc;
3475 if ((stcb == NULL) ||
3476 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3477 /* event not enabled */
3480 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3481 if (m_notify == NULL)
3484 SCTP_BUF_LEN(m_notify) = 0;
3485 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3486 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3487 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3488 strasoc->assocreset_flags = flag;
3489 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3490 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3491 strasoc->assocreset_local_tsn = sending_tsn;
3492 strasoc->assocreset_remote_tsn = recv_tsn;
3493 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3494 SCTP_BUF_NEXT(m_notify) = NULL;
3495 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3497 sctp_m_freem(m_notify);
3500 /* append to socket */
3501 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3502 0, 0, stcb->asoc.context, 0, 0, 0,
3504 if (control == NULL) {
3506 sctp_m_freem(m_notify);
3509 control->spec_flags = M_NOTIFICATION;
3510 control->length = SCTP_BUF_LEN(m_notify);
3511 /* not that we need this */
3512 control->tail_mbuf = m_notify;
3513 sctp_add_to_readq(stcb->sctp_ep, stcb,
3515 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3521 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3522 int number_entries, uint16_t *list, int flag)
3524 struct mbuf *m_notify;
3525 struct sctp_queued_to_read *control;
3526 struct sctp_stream_reset_event *strreset;
3529 if ((stcb == NULL) ||
3530 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3531 /* event not enabled */
3534 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3535 if (m_notify == NULL)
3538 SCTP_BUF_LEN(m_notify) = 0;
3539 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3540 if (len > M_TRAILINGSPACE(m_notify)) {
3541 /* never enough room */
3542 sctp_m_freem(m_notify);
3545 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3546 memset(strreset, 0, len);
3547 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3548 strreset->strreset_flags = flag;
3549 strreset->strreset_length = len;
3550 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3551 if (number_entries) {
3554 for (i = 0; i < number_entries; i++) {
3555 strreset->strreset_stream_list[i] = ntohs(list[i]);
3558 SCTP_BUF_LEN(m_notify) = len;
3559 SCTP_BUF_NEXT(m_notify) = NULL;
3560 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3562 sctp_m_freem(m_notify);
3565 /* append to socket */
3566 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3567 0, 0, stcb->asoc.context, 0, 0, 0,
3569 if (control == NULL) {
3571 sctp_m_freem(m_notify);
3574 control->spec_flags = M_NOTIFICATION;
3575 control->length = SCTP_BUF_LEN(m_notify);
3576 /* not that we need this */
3577 control->tail_mbuf = m_notify;
3578 sctp_add_to_readq(stcb->sctp_ep, stcb,
3580 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3585 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3587 struct mbuf *m_notify;
3588 struct sctp_remote_error *sre;
3589 struct sctp_queued_to_read *control;
3590 unsigned int notif_len;
3593 if ((stcb == NULL) ||
3594 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3597 if (chunk != NULL) {
3598 chunk_len = ntohs(chunk->ch.chunk_length);
3602 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
3603 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3604 if (m_notify == NULL) {
3605 /* Retry with smaller value. */
3606 notif_len = (unsigned int)sizeof(struct sctp_remote_error);
3607 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3608 if (m_notify == NULL) {
3612 SCTP_BUF_NEXT(m_notify) = NULL;
3613 sre = mtod(m_notify, struct sctp_remote_error *);
3614 memset(sre, 0, notif_len);
3615 sre->sre_type = SCTP_REMOTE_ERROR;
3617 sre->sre_length = sizeof(struct sctp_remote_error);
3618 sre->sre_error = error;
3619 sre->sre_assoc_id = sctp_get_associd(stcb);
3620 if (notif_len > sizeof(struct sctp_remote_error)) {
3621 memcpy(sre->sre_data, chunk, chunk_len);
3622 sre->sre_length += chunk_len;
3624 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3625 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3626 0, 0, stcb->asoc.context, 0, 0, 0,
3628 if (control != NULL) {
3629 control->length = SCTP_BUF_LEN(m_notify);
3630 /* not that we need this */
3631 control->tail_mbuf = m_notify;
3632 control->spec_flags = M_NOTIFICATION;
3633 sctp_add_to_readq(stcb->sctp_ep, stcb,
3635 &stcb->sctp_socket->so_rcv, 1,
3636 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3638 sctp_m_freem(m_notify);
3644 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3645 uint32_t error, void *data, int so_locked
3646 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3651 if ((stcb == NULL) ||
3652 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3653 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3654 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3655 /* If the socket is gone we are out of here */
3658 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3661 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3662 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3663 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3664 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3665 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3666 /* Don't report these in front states */
3670 switch (notification) {
3671 case SCTP_NOTIFY_ASSOC_UP:
3672 if (stcb->asoc.assoc_up_sent == 0) {
3673 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3674 stcb->asoc.assoc_up_sent = 1;
3676 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3677 sctp_notify_adaptation_layer(stcb);
3679 if (stcb->asoc.auth_supported == 0) {
3680 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3684 case SCTP_NOTIFY_ASSOC_DOWN:
3685 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3687 case SCTP_NOTIFY_INTERFACE_DOWN:
3689 struct sctp_nets *net;
3691 net = (struct sctp_nets *)data;
3692 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3693 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3696 case SCTP_NOTIFY_INTERFACE_UP:
3698 struct sctp_nets *net;
3700 net = (struct sctp_nets *)data;
3701 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3702 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3705 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3707 struct sctp_nets *net;
3709 net = (struct sctp_nets *)data;
3710 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3711 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3714 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3715 sctp_notify_send_failed2(stcb, error,
3716 (struct sctp_stream_queue_pending *)data, so_locked);
3718 case SCTP_NOTIFY_SENT_DG_FAIL:
3719 sctp_notify_send_failed(stcb, 1, error,
3720 (struct sctp_tmit_chunk *)data, so_locked);
3722 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3723 sctp_notify_send_failed(stcb, 0, error,
3724 (struct sctp_tmit_chunk *)data, so_locked);
3726 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3730 val = *((uint32_t *)data);
3732 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3735 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3736 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3737 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3738 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3740 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3743 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3744 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3745 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3746 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3748 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3751 case SCTP_NOTIFY_ASSOC_RESTART:
3752 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3753 if (stcb->asoc.auth_supported == 0) {
3754 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3758 case SCTP_NOTIFY_STR_RESET_SEND:
3759 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_OUTGOING_SSN);
3761 case SCTP_NOTIFY_STR_RESET_RECV:
3762 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_INCOMING);
3764 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3765 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3766 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3768 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3769 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3770 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3772 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3773 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3774 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3776 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3777 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3778 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3780 case SCTP_NOTIFY_ASCONF_ADD_IP:
3781 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3784 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3785 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3788 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3789 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3792 case SCTP_NOTIFY_PEER_SHUTDOWN:
3793 sctp_notify_shutdown_event(stcb);
3795 case SCTP_NOTIFY_AUTH_NEW_KEY:
3796 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3797 (uint16_t)(uintptr_t)data,
3800 case SCTP_NOTIFY_AUTH_FREE_KEY:
3801 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3802 (uint16_t)(uintptr_t)data,
3805 case SCTP_NOTIFY_NO_PEER_AUTH:
3806 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3807 (uint16_t)(uintptr_t)data,
3810 case SCTP_NOTIFY_SENDER_DRY:
3811 sctp_notify_sender_dry_event(stcb, so_locked);
3813 case SCTP_NOTIFY_REMOTE_ERROR:
3814 sctp_notify_remote_error(stcb, error, data);
3817 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3818 __func__, notification, notification);
3824 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3825 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3830 struct sctp_association *asoc;
3831 struct sctp_stream_out *outs;
3832 struct sctp_tmit_chunk *chk, *nchk;
3833 struct sctp_stream_queue_pending *sp, *nsp;
3840 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3841 /* already being freed */
3844 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3845 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3846 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3849 /* now through all the gunk freeing chunks */
3850 if (holds_lock == 0) {
3851 SCTP_TCB_SEND_LOCK(stcb);
3853 /* sent queue SHOULD be empty */
3854 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3855 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3856 asoc->sent_queue_cnt--;
3857 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3858 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
3859 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
3862 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
3866 if (chk->data != NULL) {
3867 sctp_free_bufspace(stcb, asoc, chk, 1);
3868 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3869 error, chk, so_locked);
3871 sctp_m_freem(chk->data);
3875 sctp_free_a_chunk(stcb, chk, so_locked);
3876 /* sa_ignore FREED_MEMORY */
3878 /* pending send queue SHOULD be empty */
3879 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3880 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3881 asoc->send_queue_cnt--;
3882 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
3883 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
3886 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
3889 if (chk->data != NULL) {
3890 sctp_free_bufspace(stcb, asoc, chk, 1);
3891 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3892 error, chk, so_locked);
3894 sctp_m_freem(chk->data);
3898 sctp_free_a_chunk(stcb, chk, so_locked);
3899 /* sa_ignore FREED_MEMORY */
3901 for (i = 0; i < asoc->streamoutcnt; i++) {
3902 /* For each stream */
3903 outs = &asoc->strmout[i];
3904 /* clean up any sends there */
3905 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3906 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
3907 TAILQ_REMOVE(&outs->outqueue, sp, next);
3908 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, holds_lock);
3909 sctp_free_spbufspace(stcb, asoc, sp);
3911 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3912 error, (void *)sp, so_locked);
3914 sctp_m_freem(sp->data);
3916 sp->tail_mbuf = NULL;
3921 sctp_free_remote_addr(sp->net);
3924 /* Free the chunk */
3925 sctp_free_a_strmoq(stcb, sp, so_locked);
3926 /* sa_ignore FREED_MEMORY */
3930 if (holds_lock == 0) {
3931 SCTP_TCB_SEND_UNLOCK(stcb);
3936 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3937 struct sctp_abort_chunk *abort, int so_locked
3938 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3946 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3947 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3948 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3949 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3951 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3952 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3953 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3956 /* Tell them we lost the asoc */
3957 sctp_report_all_outbound(stcb, error, 1, so_locked);
3959 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3961 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3966 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3967 struct mbuf *m, int iphlen,
3968 struct sockaddr *src, struct sockaddr *dst,
3969 struct sctphdr *sh, struct mbuf *op_err,
3970 uint8_t mflowtype, uint32_t mflowid,
3971 uint32_t vrf_id, uint16_t port)
3974 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3980 vtag = stcb->asoc.peer_vtag;
3981 vrf_id = stcb->asoc.vrf_id;
3983 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3984 mflowtype, mflowid, inp->fibnum,
3987 /* We have a TCB to abort, send notification too */
3988 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3989 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3990 /* Ok, now lets free it */
3991 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3992 so = SCTP_INP_SO(inp);
3993 atomic_add_int(&stcb->asoc.refcnt, 1);
3994 SCTP_TCB_UNLOCK(stcb);
3995 SCTP_SOCKET_LOCK(so, 1);
3996 SCTP_TCB_LOCK(stcb);
3997 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3999 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4000 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
4001 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4002 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4004 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4005 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
4006 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4007 SCTP_SOCKET_UNLOCK(so, 1);
4011 #ifdef SCTP_ASOCLOG_OF_TSNS
4013 sctp_print_out_track_log(struct sctp_tcb *stcb)
4018 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
4019 SCTP_PRINTF("IN bound TSN log-aaa\n");
4020 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4021 SCTP_PRINTF("None rcvd\n");
4024 if (stcb->asoc.tsn_in_wrapped) {
4025 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4026 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4027 stcb->asoc.in_tsnlog[i].tsn,
4028 stcb->asoc.in_tsnlog[i].strm,
4029 stcb->asoc.in_tsnlog[i].seq,
4030 stcb->asoc.in_tsnlog[i].flgs,
4031 stcb->asoc.in_tsnlog[i].sz);
4034 if (stcb->asoc.tsn_in_at) {
4035 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4036 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4037 stcb->asoc.in_tsnlog[i].tsn,
4038 stcb->asoc.in_tsnlog[i].strm,
4039 stcb->asoc.in_tsnlog[i].seq,
4040 stcb->asoc.in_tsnlog[i].flgs,
4041 stcb->asoc.in_tsnlog[i].sz);
4045 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4046 if ((stcb->asoc.tsn_out_at == 0) &&
4047 (stcb->asoc.tsn_out_wrapped == 0)) {
4048 SCTP_PRINTF("None sent\n");
4050 if (stcb->asoc.tsn_out_wrapped) {
4051 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4052 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4053 stcb->asoc.out_tsnlog[i].tsn,
4054 stcb->asoc.out_tsnlog[i].strm,
4055 stcb->asoc.out_tsnlog[i].seq,
4056 stcb->asoc.out_tsnlog[i].flgs,
4057 stcb->asoc.out_tsnlog[i].sz);
4060 if (stcb->asoc.tsn_out_at) {
4061 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4062 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4063 stcb->asoc.out_tsnlog[i].tsn,
4064 stcb->asoc.out_tsnlog[i].strm,
4065 stcb->asoc.out_tsnlog[i].seq,
4066 stcb->asoc.out_tsnlog[i].flgs,
4067 stcb->asoc.out_tsnlog[i].sz);
4075 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4076 struct mbuf *op_err,
4078 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4083 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4087 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4088 so = SCTP_INP_SO(inp);
4091 /* Got to have a TCB */
4092 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4093 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4094 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4095 SCTP_CALLED_DIRECTLY_NOCMPSET);
4100 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
4102 /* notify the peer */
4103 sctp_send_abort_tcb(stcb, op_err, so_locked);
4104 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4105 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
4106 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4107 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4109 /* notify the ulp */
4110 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4111 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4113 /* now free the asoc */
4114 #ifdef SCTP_ASOCLOG_OF_TSNS
4115 sctp_print_out_track_log(stcb);
4117 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4119 atomic_add_int(&stcb->asoc.refcnt, 1);
4120 SCTP_TCB_UNLOCK(stcb);
4121 SCTP_SOCKET_LOCK(so, 1);
4122 SCTP_TCB_LOCK(stcb);
4123 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4126 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4127 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4128 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4130 SCTP_SOCKET_UNLOCK(so, 1);
4136 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4137 struct sockaddr *src, struct sockaddr *dst,
4138 struct sctphdr *sh, struct sctp_inpcb *inp,
4140 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4141 uint32_t vrf_id, uint16_t port)
4143 struct sctp_chunkhdr *ch, chunk_buf;
4144 unsigned int chk_length;
4145 int contains_init_chunk;
4147 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4148 /* Generate a TO address for future reference */
4149 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4150 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4151 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4152 SCTP_CALLED_DIRECTLY_NOCMPSET);
4155 contains_init_chunk = 0;
4156 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4157 sizeof(*ch), (uint8_t *)&chunk_buf);
4158 while (ch != NULL) {
4159 chk_length = ntohs(ch->chunk_length);
4160 if (chk_length < sizeof(*ch)) {
4161 /* break to abort land */
4164 switch (ch->chunk_type) {
4166 contains_init_chunk = 1;
4168 case SCTP_PACKET_DROPPED:
4169 /* we don't respond to pkt-dropped */
4171 case SCTP_ABORT_ASSOCIATION:
4172 /* we don't respond with an ABORT to an ABORT */
4174 case SCTP_SHUTDOWN_COMPLETE:
4176 * we ignore it since we are not waiting for it and
4180 case SCTP_SHUTDOWN_ACK:
4181 sctp_send_shutdown_complete2(src, dst, sh,
4182 mflowtype, mflowid, fibnum,
4188 offset += SCTP_SIZE32(chk_length);
4189 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4190 sizeof(*ch), (uint8_t *)&chunk_buf);
4192 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4193 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4194 (contains_init_chunk == 0))) {
4195 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4196 mflowtype, mflowid, fibnum,
4202 * check the inbound datagram to make sure there is not an abort inside it,
4203 * if there is return 1, else return 0.
4206 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtagfill)
4208 struct sctp_chunkhdr *ch;
4209 struct sctp_init_chunk *init_chk, chunk_buf;
4211 unsigned int chk_length;
4213 offset = iphlen + sizeof(struct sctphdr);
4214 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4215 (uint8_t *)&chunk_buf);
4216 while (ch != NULL) {
4217 chk_length = ntohs(ch->chunk_length);
4218 if (chk_length < sizeof(*ch)) {
4219 /* packet is probably corrupt */
4222 /* we seem to be ok, is it an abort? */
4223 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4224 /* yep, tell them */
4227 if (ch->chunk_type == SCTP_INITIATION) {
4228 /* need to update the Vtag */
4229 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4230 offset, sizeof(*init_chk), (uint8_t *)&chunk_buf);
4231 if (init_chk != NULL) {
4232 *vtagfill = ntohl(init_chk->init.initiate_tag);
4235 /* Nope, move to the next chunk */
4236 offset += SCTP_SIZE32(chk_length);
4237 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4238 sizeof(*ch), (uint8_t *)&chunk_buf);
4244 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4245 * set (i.e. it's 0) so, create this function to compare link local scopes
4249 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4251 struct sockaddr_in6 a, b;
4257 if (a.sin6_scope_id == 0)
4258 if (sa6_recoverscope(&a)) {
4259 /* can't get scope, so can't match */
4262 if (b.sin6_scope_id == 0)
4263 if (sa6_recoverscope(&b)) {
4264 /* can't get scope, so can't match */
4267 if (a.sin6_scope_id != b.sin6_scope_id)
4274 * returns a sockaddr_in6 with embedded scope recovered and removed
4276 struct sockaddr_in6 *
4277 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4279 /* check and strip embedded scope junk */
4280 if (addr->sin6_family == AF_INET6) {
4281 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4282 if (addr->sin6_scope_id == 0) {
4284 if (!sa6_recoverscope(store)) {
4285 /* use the recovered scope */
4289 /* else, return the original "to" addr */
4290 in6_clearscope(&addr->sin6_addr);
4299 * are the two addresses the same? currently a "scopeless" check returns: 1
4303 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4307 if (sa1 == NULL || sa2 == NULL)
4310 /* must be the same family */
4311 if (sa1->sa_family != sa2->sa_family)
4314 switch (sa1->sa_family) {
4318 /* IPv6 addresses */
4319 struct sockaddr_in6 *sin6_1, *sin6_2;
4321 sin6_1 = (struct sockaddr_in6 *)sa1;
4322 sin6_2 = (struct sockaddr_in6 *)sa2;
4323 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4330 /* IPv4 addresses */
4331 struct sockaddr_in *sin_1, *sin_2;
4333 sin_1 = (struct sockaddr_in *)sa1;
4334 sin_2 = (struct sockaddr_in *)sa2;
4335 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4339 /* we don't do these... */
4345 sctp_print_address(struct sockaddr *sa)
4348 char ip6buf[INET6_ADDRSTRLEN];
4351 switch (sa->sa_family) {
4355 struct sockaddr_in6 *sin6;
4357 sin6 = (struct sockaddr_in6 *)sa;
4358 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4359 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4360 ntohs(sin6->sin6_port),
4361 sin6->sin6_scope_id);
4368 struct sockaddr_in *sin;
4371 sin = (struct sockaddr_in *)sa;
4372 p = (unsigned char *)&sin->sin_addr;
4373 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4374 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4385 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4386 struct sctp_inpcb *new_inp,
4387 struct sctp_tcb *stcb,
4391 * go through our old INP and pull off any control structures that
4392 * belong to stcb and move then to the new inp.
4394 struct socket *old_so, *new_so;
4395 struct sctp_queued_to_read *control, *nctl;
4396 struct sctp_readhead tmp_queue;
4400 old_so = old_inp->sctp_socket;
4401 new_so = new_inp->sctp_socket;
4402 TAILQ_INIT(&tmp_queue);
4403 error = sblock(&old_so->so_rcv, waitflags);
4406 * Gak, can't get sblock, we have a problem. data will be
4407 * left stranded.. and we don't dare look at it since the
4408 * other thread may be reading something. Oh well, its a
4409 * screwed up app that does a peeloff OR a accept while
4410 * reading from the main socket... actually its only the
4411 * peeloff() case, since I think read will fail on a
4412 * listening socket..
4416 /* lock the socket buffers */
4417 SCTP_INP_READ_LOCK(old_inp);
4418 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4419 /* Pull off all for out target stcb */
4420 if (control->stcb == stcb) {
4421 /* remove it we want it */
4422 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4423 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4426 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4427 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4429 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4430 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4431 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4433 m = SCTP_BUF_NEXT(m);
4437 SCTP_INP_READ_UNLOCK(old_inp);
4438 /* Remove the sb-lock on the old socket */
4440 sbunlock(&old_so->so_rcv);
4441 /* Now we move them over to the new socket buffer */
4442 SCTP_INP_READ_LOCK(new_inp);
4443 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4444 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4447 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4448 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4450 sctp_sballoc(stcb, &new_so->so_rcv, m);
4451 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4452 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4454 m = SCTP_BUF_NEXT(m);
4457 SCTP_INP_READ_UNLOCK(new_inp);
4461 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
4462 struct sctp_tcb *stcb,
4464 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4469 if ((inp != NULL) && (inp->sctp_socket != NULL)) {
4470 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4471 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4473 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4476 so = SCTP_INP_SO(inp);
4479 atomic_add_int(&stcb->asoc.refcnt, 1);
4480 SCTP_TCB_UNLOCK(stcb);
4482 SCTP_SOCKET_LOCK(so, 1);
4484 SCTP_TCB_LOCK(stcb);
4485 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4487 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4488 SCTP_SOCKET_UNLOCK(so, 1);
4493 sctp_sorwakeup(inp, inp->sctp_socket);
4494 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4496 SCTP_SOCKET_UNLOCK(so, 1);
4504 sctp_add_to_readq(struct sctp_inpcb *inp,
4505 struct sctp_tcb *stcb,
4506 struct sctp_queued_to_read *control,
4509 int inp_read_lock_held,
4511 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4517 * Here we must place the control on the end of the socket read
4518 * queue AND increment sb_cc so that select will work properly on
4521 struct mbuf *m, *prev = NULL;
4526 panic("Gak, inp NULL on add_to_readq");
4530 if (inp_read_lock_held == 0)
4531 SCTP_INP_READ_LOCK(inp);
4532 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4533 sctp_free_remote_addr(control->whoFrom);
4534 if (control->data) {
4535 sctp_m_freem(control->data);
4536 control->data = NULL;
4538 sctp_free_a_readq(stcb, control);
4539 if (inp_read_lock_held == 0)
4540 SCTP_INP_READ_UNLOCK(inp);
4543 if (!(control->spec_flags & M_NOTIFICATION)) {
4544 atomic_add_int(&inp->total_recvs, 1);
4545 if (!control->do_not_ref_stcb) {
4546 atomic_add_int(&stcb->total_recvs, 1);
4550 control->held_length = 0;
4551 control->length = 0;
4553 if (SCTP_BUF_LEN(m) == 0) {
4554 /* Skip mbufs with NO length */
4557 control->data = sctp_m_free(m);
4560 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4561 m = SCTP_BUF_NEXT(prev);
4564 control->tail_mbuf = prev;
4569 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4570 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4572 sctp_sballoc(stcb, sb, m);
4573 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4574 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4576 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4577 m = SCTP_BUF_NEXT(m);
4580 control->tail_mbuf = prev;
4582 /* Everything got collapsed out?? */
4583 sctp_free_remote_addr(control->whoFrom);
4584 sctp_free_a_readq(stcb, control);
4585 if (inp_read_lock_held == 0)
4586 SCTP_INP_READ_UNLOCK(inp);
4590 control->end_added = 1;
4592 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4593 control->on_read_q = 1;
4594 if (inp_read_lock_held == 0)
4595 SCTP_INP_READ_UNLOCK(inp);
4596 if (inp && inp->sctp_socket) {
4597 sctp_wakeup_the_read_socket(inp, stcb, so_locked);
4601 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4602 *************ALTERNATE ROUTING CODE
4605 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4606 *************ALTERNATE ROUTING CODE
4610 sctp_generate_cause(uint16_t code, char *info)
4613 struct sctp_gen_error_cause *cause;
4617 if ((code == 0) || (info == NULL)) {
4620 info_len = strlen(info);
4621 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
4624 len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len);
4625 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4627 SCTP_BUF_LEN(m) = len;
4628 cause = mtod(m, struct sctp_gen_error_cause *);
4629 cause->code = htons(code);
4630 cause->length = htons(len);
4631 memcpy(cause->info, info, info_len);
4637 sctp_generate_no_user_data_cause(uint32_t tsn)
4640 struct sctp_error_no_user_data *no_user_data_cause;
4643 len = (uint16_t)sizeof(struct sctp_error_no_user_data);
4644 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4646 SCTP_BUF_LEN(m) = len;
4647 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4648 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4649 no_user_data_cause->cause.length = htons(len);
4650 no_user_data_cause->tsn = htonl(tsn);
4655 #ifdef SCTP_MBCNT_LOGGING
4657 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4658 struct sctp_tmit_chunk *tp1, int chk_cnt)
4660 if (tp1->data == NULL) {
4663 asoc->chunks_on_out_queue -= chk_cnt;
4664 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4665 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4666 asoc->total_output_queue_size,
4671 if (asoc->total_output_queue_size >= tp1->book_size) {
4672 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4674 asoc->total_output_queue_size = 0;
4677 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4678 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4679 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4680 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4682 stcb->sctp_socket->so_snd.sb_cc = 0;
4691 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4692 uint8_t sent, int so_locked
4693 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4698 struct sctp_stream_out *strq;
4699 struct sctp_tmit_chunk *chk = NULL, *tp2;
4700 struct sctp_stream_queue_pending *sp;
4703 uint8_t foundeom = 0;
4706 int do_wakeup_routine = 0;
4708 sid = tp1->rec.data.sid;
4709 mid = tp1->rec.data.mid;
4710 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
4711 stcb->asoc.abandoned_sent[0]++;
4712 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4713 stcb->asoc.strmout[sid].abandoned_sent[0]++;
4714 #if defined(SCTP_DETAILED_STR_STATS)
4715 stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4718 stcb->asoc.abandoned_unsent[0]++;
4719 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4720 stcb->asoc.strmout[sid].abandoned_unsent[0]++;
4721 #if defined(SCTP_DETAILED_STR_STATS)
4722 stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4726 ret_sz += tp1->book_size;
4727 if (tp1->data != NULL) {
4728 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4729 sctp_flight_size_decrease(tp1);
4730 sctp_total_flight_decrease(stcb, tp1);
4732 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4733 stcb->asoc.peers_rwnd += tp1->send_size;
4734 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4736 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4738 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4741 sctp_m_freem(tp1->data);
4744 do_wakeup_routine = 1;
4745 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4746 stcb->asoc.sent_queue_cnt_removeable--;
4749 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4750 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4751 SCTP_DATA_NOT_FRAG) {
4752 /* not frag'ed we ae done */
4755 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4756 /* end of frag, we are done */
4761 * Its a begin or middle piece, we must mark all of
4765 tp1 = TAILQ_NEXT(tp1, sctp_next);
4767 } while (tp1 && notdone);
4768 if (foundeom == 0) {
4770 * The multi-part message was scattered across the send and
4773 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4774 if ((tp1->rec.data.sid != sid) ||
4775 (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) {
4779 * save to chk in case we have some on stream out
4780 * queue. If so and we have an un-transmitted one we
4781 * don't have to fudge the TSN.
4784 ret_sz += tp1->book_size;
4785 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4787 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4789 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4792 sctp_m_freem(tp1->data);
4795 /* No flight involved here book the size to 0 */
4797 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4800 do_wakeup_routine = 1;
4801 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4802 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4804 * on to the sent queue so we can wait for it to be
4807 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4809 stcb->asoc.send_queue_cnt--;
4810 stcb->asoc.sent_queue_cnt++;
4813 if (foundeom == 0) {
4815 * Still no eom found. That means there is stuff left on the
4816 * stream out queue.. yuck.
4818 SCTP_TCB_SEND_LOCK(stcb);
4819 strq = &stcb->asoc.strmout[sid];
4820 sp = TAILQ_FIRST(&strq->outqueue);
4822 sp->discard_rest = 1;
4824 * We may need to put a chunk on the queue that
4825 * holds the TSN that would have been sent with the
4829 /* Yep, we have to */
4830 sctp_alloc_a_chunk(stcb, chk);
4833 * we are hosed. All we can do is
4834 * nothing.. which will cause an
4835 * abort if the peer is paying
4840 memset(chk, 0, sizeof(*chk));
4841 chk->rec.data.rcv_flags = 0;
4842 chk->sent = SCTP_FORWARD_TSN_SKIP;
4843 chk->asoc = &stcb->asoc;
4844 if (stcb->asoc.idata_supported == 0) {
4845 if (sp->sinfo_flags & SCTP_UNORDERED) {
4846 chk->rec.data.mid = 0;
4848 chk->rec.data.mid = strq->next_mid_ordered;
4851 if (sp->sinfo_flags & SCTP_UNORDERED) {
4852 chk->rec.data.mid = strq->next_mid_unordered;
4854 chk->rec.data.mid = strq->next_mid_ordered;
4857 chk->rec.data.sid = sp->sid;
4858 chk->rec.data.ppid = sp->ppid;
4859 chk->rec.data.context = sp->context;
4860 chk->flags = sp->act_flags;
4862 chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4863 strq->chunks_on_queues++;
4864 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4865 stcb->asoc.sent_queue_cnt++;
4866 stcb->asoc.pr_sctp_cnt++;
4868 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4869 if (sp->sinfo_flags & SCTP_UNORDERED) {
4870 chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED;
4872 if (stcb->asoc.idata_supported == 0) {
4873 if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) {
4874 strq->next_mid_ordered++;
4877 if (sp->sinfo_flags & SCTP_UNORDERED) {
4878 strq->next_mid_unordered++;
4880 strq->next_mid_ordered++;
4886 * Pull any data to free up the SB and allow
4887 * sender to "add more" while we will throw
4890 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4891 ret_sz += sp->length;
4892 do_wakeup_routine = 1;
4894 sctp_m_freem(sp->data);
4896 sp->tail_mbuf = NULL;
4900 SCTP_TCB_SEND_UNLOCK(stcb);
4902 if (do_wakeup_routine) {
4903 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4906 so = SCTP_INP_SO(stcb->sctp_ep);
4908 atomic_add_int(&stcb->asoc.refcnt, 1);
4909 SCTP_TCB_UNLOCK(stcb);
4910 SCTP_SOCKET_LOCK(so, 1);
4911 SCTP_TCB_LOCK(stcb);
4912 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4913 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4914 /* assoc was freed while we were unlocked */
4915 SCTP_SOCKET_UNLOCK(so, 1);
4920 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4921 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4923 SCTP_SOCKET_UNLOCK(so, 1);
4931 * checks to see if the given address, sa, is one that is currently known by
4932 * the kernel note: can't distinguish the same address on multiple interfaces
4933 * and doesn't handle multiple addresses with different zone/scope id's note:
4934 * ifa_ifwithaddr() compares the entire sockaddr struct
4937 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4940 struct sctp_laddr *laddr;
4942 if (holds_lock == 0) {
4943 SCTP_INP_RLOCK(inp);
4945 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4946 if (laddr->ifa == NULL)
4948 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4951 if (addr->sa_family == AF_INET) {
4952 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4953 laddr->ifa->address.sin.sin_addr.s_addr) {
4955 if (holds_lock == 0) {
4956 SCTP_INP_RUNLOCK(inp);
4958 return (laddr->ifa);
4964 if (addr->sa_family == AF_INET6) {
4965 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4966 &laddr->ifa->address.sin6)) {
4968 if (holds_lock == 0) {
4969 SCTP_INP_RUNLOCK(inp);
4971 return (laddr->ifa);
4977 if (holds_lock == 0) {
4978 SCTP_INP_RUNLOCK(inp);
4984 sctp_get_ifa_hash_val(struct sockaddr *addr)
4986 switch (addr->sa_family) {
4990 struct sockaddr_in *sin;
4992 sin = (struct sockaddr_in *)addr;
4993 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
4999 struct sockaddr_in6 *sin6;
5000 uint32_t hash_of_addr;
5002 sin6 = (struct sockaddr_in6 *)addr;
5003 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5004 sin6->sin6_addr.s6_addr32[1] +
5005 sin6->sin6_addr.s6_addr32[2] +
5006 sin6->sin6_addr.s6_addr32[3]);
5007 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5008 return (hash_of_addr);
5018 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5020 struct sctp_ifa *sctp_ifap;
5021 struct sctp_vrf *vrf;
5022 struct sctp_ifalist *hash_head;
5023 uint32_t hash_of_addr;
5025 if (holds_lock == 0)
5026 SCTP_IPI_ADDR_RLOCK();
5028 vrf = sctp_find_vrf(vrf_id);
5030 if (holds_lock == 0)
5031 SCTP_IPI_ADDR_RUNLOCK();
5034 hash_of_addr = sctp_get_ifa_hash_val(addr);
5036 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5037 if (hash_head == NULL) {
5038 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5039 hash_of_addr, (uint32_t)vrf->vrf_addr_hashmark,
5040 (uint32_t)(hash_of_addr & vrf->vrf_addr_hashmark));
5041 sctp_print_address(addr);
5042 SCTP_PRINTF("No such bucket for address\n");
5043 if (holds_lock == 0)
5044 SCTP_IPI_ADDR_RUNLOCK();
5048 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5049 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5052 if (addr->sa_family == AF_INET) {
5053 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5054 sctp_ifap->address.sin.sin_addr.s_addr) {
5056 if (holds_lock == 0)
5057 SCTP_IPI_ADDR_RUNLOCK();
5064 if (addr->sa_family == AF_INET6) {
5065 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5066 &sctp_ifap->address.sin6)) {
5068 if (holds_lock == 0)
5069 SCTP_IPI_ADDR_RUNLOCK();
5076 if (holds_lock == 0)
5077 SCTP_IPI_ADDR_RUNLOCK();
5082 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t *freed_so_far, int hold_rlock,
5085 /* User pulled some data, do we need a rwnd update? */
5088 struct socket *so = NULL;
5093 atomic_add_int(&stcb->asoc.refcnt, 1);
5095 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5096 SCTP_STATE_SHUTDOWN_RECEIVED |
5097 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5098 /* Pre-check If we are freeing no update */
5101 SCTP_INP_INCR_REF(stcb->sctp_ep);
5102 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5103 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5106 so = stcb->sctp_socket;
5110 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5111 /* Have you have freed enough to look */
5113 /* Yep, its worth a look and the lock overhead */
5115 /* Figure out what the rwnd would be */
5116 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5117 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5118 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5122 if (dif >= rwnd_req) {
5124 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5127 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5129 * One last check before we allow the guy possibly
5130 * to get in. There is a race, where the guy has not
5131 * reached the gate. In that case
5135 SCTP_TCB_LOCK(stcb);
5136 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5137 /* No reports here */
5138 SCTP_TCB_UNLOCK(stcb);
5141 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5142 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5144 sctp_chunk_output(stcb->sctp_ep, stcb,
5145 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5146 /* make sure no timer is running */
5147 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5148 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5149 SCTP_TCB_UNLOCK(stcb);
5151 /* Update how much we have pending */
5152 stcb->freed_by_sorcv_sincelast = dif;
5155 if (so && r_unlocked && hold_rlock) {
5156 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5158 SCTP_INP_DECR_REF(stcb->sctp_ep);
5160 atomic_add_int(&stcb->asoc.refcnt, -1);
5165 sctp_sorecvmsg(struct socket *so,
5168 struct sockaddr *from,
5171 struct sctp_sndrcvinfo *sinfo,
5175 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5176 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5177 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5178 * On the way out we may send out any combination of:
5179 * MSG_NOTIFICATION MSG_EOR
5182 struct sctp_inpcb *inp = NULL;
5184 int cp_len = 0, error = 0;
5185 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5186 struct mbuf *m = NULL;
5187 struct sctp_tcb *stcb = NULL;
5188 int wakeup_read_socket = 0;
5189 int freecnt_applied = 0;
5190 int out_flags = 0, in_flags = 0;
5191 int block_allowed = 1;
5192 uint32_t freed_so_far = 0;
5193 uint32_t copied_so_far = 0;
5194 int in_eeor_mode = 0;
5195 int no_rcv_needed = 0;
5196 uint32_t rwnd_req = 0;
5197 int hold_sblock = 0;
5200 uint32_t held_length = 0;
5201 int sockbuf_lock = 0;
5204 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5208 in_flags = *msg_flags;
5209 if (in_flags & MSG_PEEK)
5210 SCTP_STAT_INCR(sctps_read_peeks);
5214 slen = uio->uio_resid;
5216 /* Pull in and set up our int flags */
5217 if (in_flags & MSG_OOB) {
5218 /* Out of band's NOT supported */
5219 return (EOPNOTSUPP);
5221 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5222 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5225 if ((in_flags & (MSG_DONTWAIT
5228 SCTP_SO_IS_NBIO(so)) {
5231 /* setup the endpoint */
5232 inp = (struct sctp_inpcb *)so->so_pcb;
5234 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5237 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5238 /* Must be at least a MTU's worth */
5239 if (rwnd_req < SCTP_MIN_RWND)
5240 rwnd_req = SCTP_MIN_RWND;
5241 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5242 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5243 sctp_misc_ints(SCTP_SORECV_ENTER,
5244 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5246 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5247 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5248 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5250 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5252 goto release_unlocked;
5259 if (hold_sblock == 0) {
5260 SOCKBUF_LOCK(&so->so_rcv);
5263 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5264 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5267 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5269 error = so->so_error;
5270 if ((in_flags & MSG_PEEK) == 0)
5274 if (so->so_rcv.sb_cc == 0) {
5281 if (so->so_rcv.sb_cc <= held_length) {
5283 error = so->so_error;
5284 if ((in_flags & MSG_PEEK) == 0) {
5289 if ((so->so_rcv.sb_cc == 0) &&
5290 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5291 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5292 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5294 * For active open side clear flags for
5295 * re-use passive open is blocked by
5298 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5300 * You were aborted, passive side
5303 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5306 so->so_state &= ~(SS_ISCONNECTING |
5307 SS_ISDISCONNECTING |
5311 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5312 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5319 if (block_allowed) {
5320 error = sbwait(&so->so_rcv);
5325 goto restart_nosblocks;
5327 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5328 error = EWOULDBLOCK;
5332 if (hold_sblock == 1) {
5333 SOCKBUF_UNLOCK(&so->so_rcv);
5336 /* we possibly have data we can read */
5337 /* sa_ignore FREED_MEMORY */
5338 control = TAILQ_FIRST(&inp->read_queue);
5339 if (control == NULL) {
5341 * This could be happening since the appender did the
5342 * increment but as not yet did the tailq insert onto the
5345 if (hold_rlock == 0) {
5346 SCTP_INP_READ_LOCK(inp);
5348 control = TAILQ_FIRST(&inp->read_queue);
5349 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5351 panic("Huh, its non zero and nothing on control?");
5353 so->so_rcv.sb_cc = 0;
5355 SCTP_INP_READ_UNLOCK(inp);
5359 if ((control->length == 0) &&
5360 (control->do_not_ref_stcb)) {
5362 * Clean up code for freeing assoc that left behind a
5363 * pdapi.. maybe a peer in EEOR that just closed after
5364 * sending and never indicated a EOR.
5366 if (hold_rlock == 0) {
5368 SCTP_INP_READ_LOCK(inp);
5370 control->held_length = 0;
5371 if (control->data) {
5372 /* Hmm there is data here .. fix */
5376 m_tmp = control->data;
5378 cnt += SCTP_BUF_LEN(m_tmp);
5379 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5380 control->tail_mbuf = m_tmp;
5381 control->end_added = 1;
5383 m_tmp = SCTP_BUF_NEXT(m_tmp);
5385 control->length = cnt;
5388 TAILQ_REMOVE(&inp->read_queue, control, next);
5389 /* Add back any hiddend data */
5390 sctp_free_remote_addr(control->whoFrom);
5391 sctp_free_a_readq(stcb, control);
5395 SCTP_INP_READ_UNLOCK(inp);
5399 if ((control->length == 0) &&
5400 (control->end_added == 1)) {
5402 * Do we also need to check for (control->pdapi_aborted ==
5405 if (hold_rlock == 0) {
5407 SCTP_INP_READ_LOCK(inp);
5409 TAILQ_REMOVE(&inp->read_queue, control, next);
5410 if (control->data) {
5412 panic("control->data not null but control->length == 0");
5414 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5415 sctp_m_freem(control->data);
5416 control->data = NULL;
5419 if (control->aux_data) {
5420 sctp_m_free(control->aux_data);
5421 control->aux_data = NULL;
5424 if (control->on_strm_q) {
5425 panic("About to free ctl:%p so:%p and its in %d",
5426 control, so, control->on_strm_q);
5429 sctp_free_remote_addr(control->whoFrom);
5430 sctp_free_a_readq(stcb, control);
5433 SCTP_INP_READ_UNLOCK(inp);
5437 if (control->length == 0) {
5438 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5440 /* find a more suitable one then this */
5441 ctl = TAILQ_NEXT(control, next);
5443 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5445 (ctl->spec_flags & M_NOTIFICATION) ||
5446 ((ctl->do_not_ref_stcb == 0) &&
5447 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5450 * If we have a different TCB next, and there is data
5451 * present. If we have already taken some (pdapi), OR we can
5452 * ref the tcb and no delivery as started on this stream, we
5453 * take it. Note we allow a notification on a different
5454 * assoc to be delivered..
5458 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5460 ((ctl->some_taken) ||
5461 ((ctl->do_not_ref_stcb == 0) &&
5462 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5463 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5465 * If we have the same tcb, and there is data present, and we
5466 * have the strm interleave feature present. Then if we have
5467 * taken some (pdapi) or we can refer to tht tcb AND we have
5468 * not started a delivery for this stream, we can take it.
5469 * Note we do NOT allow a notificaiton on the same assoc to
5475 ctl = TAILQ_NEXT(ctl, next);
5479 * if we reach here, not suitable replacement is available
5480 * <or> fragment interleave is NOT on. So stuff the sb_cc
5481 * into the our held count, and its time to sleep again.
5483 held_length = so->so_rcv.sb_cc;
5484 control->held_length = so->so_rcv.sb_cc;
5487 /* Clear the held length since there is something to read */
5488 control->held_length = 0;
5491 * If we reach here, control has a some data for us to read off.
5492 * Note that stcb COULD be NULL.
5494 if (hold_rlock == 0) {
5496 SCTP_INP_READ_LOCK(inp);
5498 control->some_taken++;
5499 stcb = control->stcb;
5501 if ((control->do_not_ref_stcb == 0) &&
5502 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5503 if (freecnt_applied == 0)
5505 } else if (control->do_not_ref_stcb == 0) {
5506 /* you can't free it on me please */
5508 * The lock on the socket buffer protects us so the
5509 * free code will stop. But since we used the
5510 * socketbuf lock and the sender uses the tcb_lock
5511 * to increment, we need to use the atomic add to
5514 if (freecnt_applied) {
5516 panic("refcnt already incremented");
5518 SCTP_PRINTF("refcnt already incremented?\n");
5521 atomic_add_int(&stcb->asoc.refcnt, 1);
5522 freecnt_applied = 1;
5525 * Setup to remember how much we have not yet told
5526 * the peer our rwnd has opened up. Note we grab the
5527 * value from the tcb from last time. Note too that
5528 * sack sending clears this when a sack is sent,
5529 * which is fine. Once we hit the rwnd_req, we then
5530 * will go to the sctp_user_rcvd() that will not
5531 * lock until it KNOWs it MUST send a WUP-SACK.
5533 freed_so_far = stcb->freed_by_sorcv_sincelast;
5534 stcb->freed_by_sorcv_sincelast = 0;
5538 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5539 control->do_not_ref_stcb == 0) {
5540 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5542 /* First lets get off the sinfo and sockaddr info */
5543 if ((sinfo != NULL) && (filling_sinfo != 0)) {
5544 sinfo->sinfo_stream = control->sinfo_stream;
5545 sinfo->sinfo_ssn = (uint16_t)control->mid;
5546 sinfo->sinfo_flags = control->sinfo_flags;
5547 sinfo->sinfo_ppid = control->sinfo_ppid;
5548 sinfo->sinfo_context = control->sinfo_context;
5549 sinfo->sinfo_timetolive = control->sinfo_timetolive;
5550 sinfo->sinfo_tsn = control->sinfo_tsn;
5551 sinfo->sinfo_cumtsn = control->sinfo_cumtsn;
5552 sinfo->sinfo_assoc_id = control->sinfo_assoc_id;
5553 nxt = TAILQ_NEXT(control, next);
5554 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5555 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5556 struct sctp_extrcvinfo *s_extra;
5558 s_extra = (struct sctp_extrcvinfo *)sinfo;
5561 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5562 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5563 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5565 if (nxt->spec_flags & M_NOTIFICATION) {
5566 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5568 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5569 s_extra->serinfo_next_length = nxt->length;
5570 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5571 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5572 if (nxt->tail_mbuf != NULL) {
5573 if (nxt->end_added) {
5574 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5579 * we explicitly 0 this, since the memcpy
5580 * got some other things beyond the older
5581 * sinfo_ that is on the control's structure
5585 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5586 s_extra->serinfo_next_aid = 0;
5587 s_extra->serinfo_next_length = 0;
5588 s_extra->serinfo_next_ppid = 0;
5589 s_extra->serinfo_next_stream = 0;
5593 * update off the real current cum-ack, if we have an stcb.
5595 if ((control->do_not_ref_stcb == 0) && stcb)
5596 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5598 * mask off the high bits, we keep the actual chunk bits in
5601 sinfo->sinfo_flags &= 0x00ff;
5602 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5603 sinfo->sinfo_flags |= SCTP_UNORDERED;
5606 #ifdef SCTP_ASOCLOG_OF_TSNS
5608 int index, newindex;
5609 struct sctp_pcbtsn_rlog *entry;
5612 index = inp->readlog_index;
5613 newindex = index + 1;
5614 if (newindex >= SCTP_READ_LOG_SIZE) {
5617 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5618 entry = &inp->readlog[index];
5619 entry->vtag = control->sinfo_assoc_id;
5620 entry->strm = control->sinfo_stream;
5621 entry->seq = (uint16_t)control->mid;
5622 entry->sz = control->length;
5623 entry->flgs = control->sinfo_flags;
5626 if ((fromlen > 0) && (from != NULL)) {
5627 union sctp_sockstore store;
5630 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5633 len = sizeof(struct sockaddr_in6);
5634 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5635 store.sin6.sin6_port = control->port_from;
5641 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5642 len = sizeof(struct sockaddr_in6);
5643 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5645 store.sin6.sin6_port = control->port_from;
5647 len = sizeof(struct sockaddr_in);
5648 store.sin = control->whoFrom->ro._l_addr.sin;
5649 store.sin.sin_port = control->port_from;
5652 len = sizeof(struct sockaddr_in);
5653 store.sin = control->whoFrom->ro._l_addr.sin;
5654 store.sin.sin_port = control->port_from;
5662 memcpy(from, &store, min((size_t)fromlen, len));
5665 struct sockaddr_in6 lsa6, *from6;
5667 from6 = (struct sockaddr_in6 *)from;
5668 sctp_recover_scope_mac(from6, (&lsa6));
5673 SCTP_INP_READ_UNLOCK(inp);
5677 SOCKBUF_UNLOCK(&so->so_rcv);
5680 /* now copy out what data we can */
5682 /* copy out each mbuf in the chain up to length */
5686 /* Move out all we can */
5687 cp_len = (int)uio->uio_resid;
5688 my_len = (int)SCTP_BUF_LEN(m);
5689 if (cp_len > my_len) {
5690 /* not enough in this buf */
5694 SCTP_INP_READ_UNLOCK(inp);
5698 error = uiomove(mtod(m, char *), cp_len, uio);
5700 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5703 if ((control->do_not_ref_stcb == 0) && stcb &&
5704 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5708 /* error we are out of here */
5711 SCTP_INP_READ_LOCK(inp);
5713 if (cp_len == SCTP_BUF_LEN(m)) {
5714 if ((SCTP_BUF_NEXT(m) == NULL) &&
5715 (control->end_added)) {
5716 out_flags |= MSG_EOR;
5717 if ((control->do_not_ref_stcb == 0) &&
5718 (control->stcb != NULL) &&
5719 ((control->spec_flags & M_NOTIFICATION) == 0))
5720 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5722 if (control->spec_flags & M_NOTIFICATION) {
5723 out_flags |= MSG_NOTIFICATION;
5725 /* we ate up the mbuf */
5726 if (in_flags & MSG_PEEK) {
5728 m = SCTP_BUF_NEXT(m);
5729 copied_so_far += cp_len;
5731 /* dispose of the mbuf */
5732 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5733 sctp_sblog(&so->so_rcv,
5734 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5736 sctp_sbfree(control, stcb, &so->so_rcv, m);
5737 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5738 sctp_sblog(&so->so_rcv,
5739 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5741 copied_so_far += cp_len;
5742 freed_so_far += cp_len;
5743 freed_so_far += MSIZE;
5744 atomic_subtract_int(&control->length, cp_len);
5745 control->data = sctp_m_free(m);
5748 * been through it all, must hold sb
5749 * lock ok to null tail
5751 if (control->data == NULL) {
5753 if ((control->end_added == 0) ||
5754 (TAILQ_NEXT(control, next) == NULL)) {
5762 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5763 panic("Hmm we don't own the lock?");
5767 control->tail_mbuf = NULL;
5769 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5770 panic("end_added, nothing left and no MSG_EOR");
5776 /* Do we need to trim the mbuf? */
5777 if (control->spec_flags & M_NOTIFICATION) {
5778 out_flags |= MSG_NOTIFICATION;
5780 if ((in_flags & MSG_PEEK) == 0) {
5781 SCTP_BUF_RESV_UF(m, cp_len);
5782 SCTP_BUF_LEN(m) -= cp_len;
5783 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5784 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5786 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5787 if ((control->do_not_ref_stcb == 0) &&
5789 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5791 copied_so_far += cp_len;
5792 freed_so_far += cp_len;
5793 freed_so_far += MSIZE;
5794 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5795 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5796 SCTP_LOG_SBRESULT, 0);
5798 atomic_subtract_int(&control->length, cp_len);
5800 copied_so_far += cp_len;
5803 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5806 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5807 (control->do_not_ref_stcb == 0) &&
5808 (freed_so_far >= rwnd_req)) {
5809 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5811 } /* end while(m) */
5813 * At this point we have looked at it all and we either have
5814 * a MSG_EOR/or read all the user wants... <OR>
5815 * control->length == 0.
5817 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5818 /* we are done with this control */
5819 if (control->length == 0) {
5820 if (control->data) {
5822 panic("control->data not null at read eor?");
5824 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5825 sctp_m_freem(control->data);
5826 control->data = NULL;
5830 if (hold_rlock == 0) {
5831 SCTP_INP_READ_LOCK(inp);
5834 TAILQ_REMOVE(&inp->read_queue, control, next);
5835 /* Add back any hiddend data */
5836 if (control->held_length) {
5838 control->held_length = 0;
5839 wakeup_read_socket = 1;
5841 if (control->aux_data) {
5842 sctp_m_free(control->aux_data);
5843 control->aux_data = NULL;
5845 no_rcv_needed = control->do_not_ref_stcb;
5846 sctp_free_remote_addr(control->whoFrom);
5847 control->data = NULL;
5849 if (control->on_strm_q) {
5850 panic("About to free ctl:%p so:%p and its in %d",
5851 control, so, control->on_strm_q);
5854 sctp_free_a_readq(stcb, control);
5856 if ((freed_so_far >= rwnd_req) &&
5857 (no_rcv_needed == 0))
5858 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5862 * The user did not read all of this
5863 * message, turn off the returned MSG_EOR
5864 * since we are leaving more behind on the
5868 if (control->end_added &&
5869 (control->data == NULL) &&
5870 (control->tail_mbuf == NULL)) {
5871 panic("Gak, control->length is corrupt?");
5874 no_rcv_needed = control->do_not_ref_stcb;
5875 out_flags &= ~MSG_EOR;
5878 if (out_flags & MSG_EOR) {
5881 if ((uio->uio_resid == 0) ||
5883 (copied_so_far >= (uint32_t)max(so->so_rcv.sb_lowat, 1)))) {
5887 * If I hit here the receiver wants more and this message is
5888 * NOT done (pd-api). So two questions. Can we block? if not
5889 * we are done. Did the user NOT set MSG_WAITALL?
5891 if (block_allowed == 0) {
5895 * We need to wait for more data a few things: - We don't
5896 * sbunlock() so we don't get someone else reading. - We
5897 * must be sure to account for the case where what is added
5898 * is NOT to our control when we wakeup.
5902 * Do we need to tell the transport a rwnd update might be
5903 * needed before we go to sleep?
5905 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5906 ((freed_so_far >= rwnd_req) &&
5907 (control->do_not_ref_stcb == 0) &&
5908 (no_rcv_needed == 0))) {
5909 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5912 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5915 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5918 if (hold_rlock == 1) {
5919 SCTP_INP_READ_UNLOCK(inp);
5922 if (hold_sblock == 0) {
5923 SOCKBUF_LOCK(&so->so_rcv);
5926 if ((copied_so_far) && (control->length == 0) &&
5927 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5930 if (so->so_rcv.sb_cc <= control->held_length) {
5931 error = sbwait(&so->so_rcv);
5935 control->held_length = 0;
5938 SOCKBUF_UNLOCK(&so->so_rcv);
5941 if (control->length == 0) {
5942 /* still nothing here */
5943 if (control->end_added == 1) {
5944 /* he aborted, or is done i.e.did a shutdown */
5945 out_flags |= MSG_EOR;
5946 if (control->pdapi_aborted) {
5947 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5948 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5950 out_flags |= MSG_TRUNC;
5952 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5953 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5955 goto done_with_control;
5957 if (so->so_rcv.sb_cc > held_length) {
5958 control->held_length = so->so_rcv.sb_cc;
5961 goto wait_some_more;
5962 } else if (control->data == NULL) {
5964 * we must re-sync since data is probably being
5967 SCTP_INP_READ_LOCK(inp);
5968 if ((control->length > 0) && (control->data == NULL)) {
5970 * big trouble.. we have the lock and its
5974 panic("Impossible data==NULL length !=0");
5976 out_flags |= MSG_EOR;
5977 out_flags |= MSG_TRUNC;
5978 control->length = 0;
5979 SCTP_INP_READ_UNLOCK(inp);
5980 goto done_with_control;
5982 SCTP_INP_READ_UNLOCK(inp);
5983 /* We will fall around to get more data */
5988 * Give caller back the mbuf chain,
5989 * store in uio_resid the length
5991 wakeup_read_socket = 0;
5992 if ((control->end_added == 0) ||
5993 (TAILQ_NEXT(control, next) == NULL)) {
5994 /* Need to get rlock */
5995 if (hold_rlock == 0) {
5996 SCTP_INP_READ_LOCK(inp);
6000 if (control->end_added) {
6001 out_flags |= MSG_EOR;
6002 if ((control->do_not_ref_stcb == 0) &&
6003 (control->stcb != NULL) &&
6004 ((control->spec_flags & M_NOTIFICATION) == 0))
6005 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6007 if (control->spec_flags & M_NOTIFICATION) {
6008 out_flags |= MSG_NOTIFICATION;
6010 uio->uio_resid = control->length;
6011 *mp = control->data;
6014 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6015 sctp_sblog(&so->so_rcv,
6016 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6018 sctp_sbfree(control, stcb, &so->so_rcv, m);
6019 freed_so_far += SCTP_BUF_LEN(m);
6020 freed_so_far += MSIZE;
6021 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6022 sctp_sblog(&so->so_rcv,
6023 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6025 m = SCTP_BUF_NEXT(m);
6027 control->data = control->tail_mbuf = NULL;
6028 control->length = 0;
6029 if (out_flags & MSG_EOR) {
6030 /* Done with this control */
6031 goto done_with_control;
6035 if (hold_rlock == 1) {
6036 SCTP_INP_READ_UNLOCK(inp);
6039 if (hold_sblock == 1) {
6040 SOCKBUF_UNLOCK(&so->so_rcv);
6043 sbunlock(&so->so_rcv);
6048 SOCKBUF_UNLOCK(&so->so_rcv);
6051 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6052 if ((freed_so_far >= rwnd_req) &&
6053 (control && (control->do_not_ref_stcb == 0)) &&
6054 (no_rcv_needed == 0))
6055 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6059 *msg_flags = out_flags;
6061 if (((out_flags & MSG_EOR) == 0) &&
6062 ((in_flags & MSG_PEEK) == 0) &&
6064 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6065 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6066 struct sctp_extrcvinfo *s_extra;
6068 s_extra = (struct sctp_extrcvinfo *)sinfo;
6069 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6071 if (hold_rlock == 1) {
6072 SCTP_INP_READ_UNLOCK(inp);
6075 SOCKBUF_UNLOCK(&so->so_rcv);
6078 sbunlock(&so->so_rcv);
6080 if (freecnt_applied) {
6082 * The lock on the socket buffer protects us so the free
6083 * code will stop. But since we used the socketbuf lock and
6084 * the sender uses the tcb_lock to increment, we need to use
6085 * the atomic add to the refcnt.
6089 panic("stcb for refcnt has gone NULL?");
6095 /* Save the value back for next time */
6096 stcb->freed_by_sorcv_sincelast = freed_so_far;
6097 atomic_add_int(&stcb->asoc.refcnt, -1);
6099 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6101 sctp_misc_ints(SCTP_SORECV_DONE,
6103 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6107 sctp_misc_ints(SCTP_SORECV_DONE,
6109 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6115 if (wakeup_read_socket) {
6116 sctp_sorwakeup(inp, so);
6122 #ifdef SCTP_MBUF_LOGGING
6124 sctp_m_free(struct mbuf *m)
6126 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6127 sctp_log_mb(m, SCTP_MBUF_IFREE);
6133 sctp_m_freem(struct mbuf *mb)
6136 mb = sctp_m_free(mb);
6142 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6145 * Given a local address. For all associations that holds the
6146 * address, request a peer-set-primary.
6148 struct sctp_ifa *ifa;
6149 struct sctp_laddr *wi;
6151 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6153 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6154 return (EADDRNOTAVAIL);
6157 * Now that we have the ifa we must awaken the iterator with this
6160 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6162 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6165 /* Now incr the count and int wi structure */
6166 SCTP_INCR_LADDR_COUNT();
6167 bzero(wi, sizeof(*wi));
6168 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6170 wi->action = SCTP_SET_PRIM_ADDR;
6171 atomic_add_int(&ifa->refcount, 1);
6173 /* Now add it to the work queue */
6174 SCTP_WQ_ADDR_LOCK();
6176 * Should this really be a tailq? As it is we will process the
6179 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6180 SCTP_WQ_ADDR_UNLOCK();
6181 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6182 (struct sctp_inpcb *)NULL,
6183 (struct sctp_tcb *)NULL,
6184 (struct sctp_nets *)NULL);
6190 sctp_soreceive(struct socket *so,
6191 struct sockaddr **psa,
6194 struct mbuf **controlp,
6198 uint8_t sockbuf[256];
6199 struct sockaddr *from;
6200 struct sctp_extrcvinfo sinfo;
6201 int filling_sinfo = 1;
6202 struct sctp_inpcb *inp;
6204 inp = (struct sctp_inpcb *)so->so_pcb;
6205 /* pickup the assoc we are reading from */
6207 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6210 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6211 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6212 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6213 (controlp == NULL)) {
6214 /* user does not want the sndrcv ctl */
6218 from = (struct sockaddr *)sockbuf;
6219 fromlen = sizeof(sockbuf);
6226 if (filling_sinfo) {
6227 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6229 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6230 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6231 if (controlp != NULL) {
6232 /* copy back the sinfo in a CMSG format */
6234 *controlp = sctp_build_ctl_nchunk(inp,
6235 (struct sctp_sndrcvinfo *)&sinfo);
6240 /* copy back the address info */
6241 if (from && from->sa_len) {
6242 *psa = sodupsockaddr(from, M_NOWAIT);
6255 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6256 int totaddr, int *error)
6260 struct sctp_inpcb *inp;
6261 struct sockaddr *sa;
6264 struct sockaddr_in *sin;
6267 struct sockaddr_in6 *sin6;
6271 inp = stcb->sctp_ep;
6273 for (i = 0; i < totaddr; i++) {
6274 switch (sa->sa_family) {
6277 incr = sizeof(struct sockaddr_in);
6278 sin = (struct sockaddr_in *)sa;
6279 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6280 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6281 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6282 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6283 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6284 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6288 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6289 SCTP_DONOT_SETSCOPE,
6290 SCTP_ADDR_IS_CONFIRMED)) {
6291 /* assoc gone no un-lock */
6292 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6293 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6294 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6303 incr = sizeof(struct sockaddr_in6);
6304 sin6 = (struct sockaddr_in6 *)sa;
6305 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6306 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6307 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6308 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6309 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6313 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6314 SCTP_DONOT_SETSCOPE,
6315 SCTP_ADDR_IS_CONFIRMED)) {
6316 /* assoc gone no un-lock */
6317 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6318 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6319 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6329 sa = (struct sockaddr *)((caddr_t)sa + incr);
6336 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6337 unsigned int *totaddr,
6338 unsigned int *num_v4, unsigned int *num_v6, int *error,
6339 unsigned int limit, int *bad_addr)
6341 struct sockaddr *sa;
6342 struct sctp_tcb *stcb = NULL;
6343 unsigned int incr, at, i;
6347 *error = *num_v6 = *num_v4 = 0;
6348 /* account and validate addresses */
6349 for (i = 0; i < *totaddr; i++) {
6350 switch (sa->sa_family) {
6353 incr = (unsigned int)sizeof(struct sockaddr_in);
6354 if (sa->sa_len != incr) {
6355 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6366 struct sockaddr_in6 *sin6;
6368 sin6 = (struct sockaddr_in6 *)sa;
6369 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6370 /* Must be non-mapped for connectx */
6371 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6376 incr = (unsigned int)sizeof(struct sockaddr_in6);
6377 if (sa->sa_len != incr) {
6378 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6393 if (i == *totaddr) {
6396 SCTP_INP_INCR_REF(inp);
6397 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6399 /* Already have or am bring up an association */
6402 SCTP_INP_DECR_REF(inp);
6404 if ((at + incr) > limit) {
6408 sa = (struct sockaddr *)((caddr_t)sa + incr);
6410 return ((struct sctp_tcb *)NULL);
6414 * sctp_bindx(ADD) for one address.
6415 * assumes all arguments are valid/checked by caller.
6418 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6419 struct sockaddr *sa, sctp_assoc_t assoc_id,
6420 uint32_t vrf_id, int *error, void *p)
6422 struct sockaddr *addr_touse;
6423 #if defined(INET) && defined(INET6)
6424 struct sockaddr_in sin;
6427 /* see if we're bound all already! */
6428 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6429 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6435 if (sa->sa_family == AF_INET6) {
6437 struct sockaddr_in6 *sin6;
6440 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6441 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6445 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6446 /* can only bind v6 on PF_INET6 sockets */
6447 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6452 sin6 = (struct sockaddr_in6 *)addr_touse;
6453 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6454 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6455 SCTP_IPV6_V6ONLY(inp)) {
6456 /* can't bind v4-mapped on PF_INET sockets */
6457 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6461 in6_sin6_2_sin(&sin, sin6);
6462 addr_touse = (struct sockaddr *)&sin;
6468 if (sa->sa_family == AF_INET) {
6469 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6470 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6474 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6475 SCTP_IPV6_V6ONLY(inp)) {
6476 /* can't bind v4 on PF_INET sockets */
6477 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6483 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6485 /* Can't get proc for Net/Open BSD */
6486 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6490 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6494 * No locks required here since bind and mgmt_ep_sa all do their own
6495 * locking. If we do something for the FIX: below we may need to
6496 * lock in that case.
6498 if (assoc_id == 0) {
6499 /* add the address */
6500 struct sctp_inpcb *lep;
6501 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6503 /* validate the incoming port */
6504 if ((lsin->sin_port != 0) &&
6505 (lsin->sin_port != inp->sctp_lport)) {
6506 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6510 /* user specified 0 port, set it to existing port */
6511 lsin->sin_port = inp->sctp_lport;
6514 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6517 * We must decrement the refcount since we have the
6518 * ep already and are binding. No remove going on
6521 SCTP_INP_DECR_REF(lep);
6524 /* already bound to it.. ok */
6526 } else if (lep == NULL) {
6527 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6528 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6529 SCTP_ADD_IP_ADDRESS,
6532 *error = EADDRINUSE;
6538 * FIX: decide whether we allow assoc based bindx
6544 * sctp_bindx(DELETE) for one address.
6545 * assumes all arguments are valid/checked by caller.
6548 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6549 struct sockaddr *sa, sctp_assoc_t assoc_id,
6550 uint32_t vrf_id, int *error)
6552 struct sockaddr *addr_touse;
6553 #if defined(INET) && defined(INET6)
6554 struct sockaddr_in sin;
6557 /* see if we're bound all already! */
6558 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6559 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6565 if (sa->sa_family == AF_INET6) {
6567 struct sockaddr_in6 *sin6;
6570 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6571 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6575 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6576 /* can only bind v6 on PF_INET6 sockets */
6577 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6582 sin6 = (struct sockaddr_in6 *)addr_touse;
6583 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6584 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6585 SCTP_IPV6_V6ONLY(inp)) {
6586 /* can't bind mapped-v4 on PF_INET sockets */
6587 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6591 in6_sin6_2_sin(&sin, sin6);
6592 addr_touse = (struct sockaddr *)&sin;
6598 if (sa->sa_family == AF_INET) {
6599 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6600 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6604 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6605 SCTP_IPV6_V6ONLY(inp)) {
6606 /* can't bind v4 on PF_INET sockets */
6607 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6614 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6615 * below is ever changed we may need to lock before calling
6616 * association level binding.
6618 if (assoc_id == 0) {
6619 /* delete the address */
6620 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6621 SCTP_DEL_IP_ADDRESS,
6625 * FIX: decide whether we allow assoc based bindx
6631 * returns the valid local address count for an assoc, taking into account
6635 sctp_local_addr_count(struct sctp_tcb *stcb)
6639 int ipv4_local_scope, ipv4_addr_legal;
6642 int local_scope, site_scope, ipv6_addr_legal;
6644 struct sctp_vrf *vrf;
6645 struct sctp_ifn *sctp_ifn;
6646 struct sctp_ifa *sctp_ifa;
6649 /* Turn on all the appropriate scopes */
6650 loopback_scope = stcb->asoc.scope.loopback_scope;
6652 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6653 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6656 local_scope = stcb->asoc.scope.local_scope;
6657 site_scope = stcb->asoc.scope.site_scope;
6658 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6660 SCTP_IPI_ADDR_RLOCK();
6661 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6663 /* no vrf, no addresses */
6664 SCTP_IPI_ADDR_RUNLOCK();
6667 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6669 * bound all case: go through all ifns on the vrf
6671 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6672 if ((loopback_scope == 0) &&
6673 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6676 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6677 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6679 switch (sctp_ifa->address.sa.sa_family) {
6682 if (ipv4_addr_legal) {
6683 struct sockaddr_in *sin;
6685 sin = &sctp_ifa->address.sin;
6686 if (sin->sin_addr.s_addr == 0) {
6693 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6694 &sin->sin_addr) != 0) {
6697 if ((ipv4_local_scope == 0) &&
6698 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6701 /* count this one */
6710 if (ipv6_addr_legal) {
6711 struct sockaddr_in6 *sin6;
6713 sin6 = &sctp_ifa->address.sin6;
6714 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6717 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6718 &sin6->sin6_addr) != 0) {
6721 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6722 if (local_scope == 0)
6724 if (sin6->sin6_scope_id == 0) {
6725 if (sa6_recoverscope(sin6) != 0)
6738 if ((site_scope == 0) &&
6739 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6742 /* count this one */
6757 struct sctp_laddr *laddr;
6759 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6761 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6764 /* count this one */
6768 SCTP_IPI_ADDR_RUNLOCK();
6772 #if defined(SCTP_LOCAL_TRACE_BUF)
6775 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)
6777 uint32_t saveindex, newindex;
6780 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6781 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6784 newindex = saveindex + 1;
6786 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6787 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6790 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6791 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6792 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6793 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6794 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6795 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6796 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6797 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6802 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
6803 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
6807 struct ip6_hdr *ip6;
6809 struct mbuf *sp, *last;
6810 struct udphdr *uhdr;
6813 if ((m->m_flags & M_PKTHDR) == 0) {
6814 /* Can't handle one that is not a pkt hdr */
6817 /* Pull the src port */
6818 iph = mtod(m, struct ip *);
6819 uhdr = (struct udphdr *)((caddr_t)iph + off);
6820 port = uhdr->uh_sport;
6822 * Split out the mbuf chain. Leave the IP header in m, place the
6825 sp = m_split(m, off, M_NOWAIT);
6827 /* Gak, drop packet, we can't do a split */
6830 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6831 /* Gak, packet can't have an SCTP header in it - too small */
6835 /* Now pull up the UDP header and SCTP header together */
6836 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6838 /* Gak pullup failed */
6841 /* Trim out the UDP header */
6842 m_adj(sp, sizeof(struct udphdr));
6844 /* Now reconstruct the mbuf chain */
6845 for (last = m; last->m_next; last = last->m_next);
6847 m->m_pkthdr.len += sp->m_pkthdr.len;
6849 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
6850 * checksum and it was valid. Since CSUM_DATA_VALID ==
6851 * CSUM_SCTP_VALID this would imply that the HW also verified the
6852 * SCTP checksum. Therefore, clear the bit.
6854 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
6855 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
6857 if_name(m->m_pkthdr.rcvif),
6858 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
6859 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
6860 iph = mtod(m, struct ip *);
6861 switch (iph->ip_v) {
6864 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
6865 sctp_input_with_port(m, off, port);
6869 case IPV6_VERSION >> 4:
6870 ip6 = mtod(m, struct ip6_hdr *);
6871 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
6872 sctp6_input_with_port(&m, &off, port);
6886 sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED)
6888 struct ip *outer_ip, *inner_ip;
6892 struct sctp_inpcb *inp;
6893 struct sctp_tcb *stcb;
6894 struct sctp_nets *net;
6895 struct sctp_init_chunk *ch;
6896 struct sockaddr_in src, dst;
6899 inner_ip = (struct ip *)vip;
6900 icmp = (struct icmp *)((caddr_t)inner_ip -
6901 (sizeof(struct icmp) - sizeof(struct ip)));
6902 outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
6903 if (ntohs(outer_ip->ip_len) <
6904 sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
6907 udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
6908 sh = (struct sctphdr *)(udp + 1);
6909 memset(&src, 0, sizeof(struct sockaddr_in));
6910 src.sin_family = AF_INET;
6911 src.sin_len = sizeof(struct sockaddr_in);
6912 src.sin_port = sh->src_port;
6913 src.sin_addr = inner_ip->ip_src;
6914 memset(&dst, 0, sizeof(struct sockaddr_in));
6915 dst.sin_family = AF_INET;
6916 dst.sin_len = sizeof(struct sockaddr_in);
6917 dst.sin_port = sh->dest_port;
6918 dst.sin_addr = inner_ip->ip_dst;
6920 * 'dst' holds the dest of the packet that failed to be sent. 'src'
6921 * holds our local endpoint address. Thus we reverse the dst and the
6922 * src in the lookup.
6926 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
6927 (struct sockaddr *)&src,
6929 SCTP_DEFAULT_VRFID);
6930 if ((stcb != NULL) &&
6933 /* Check the UDP port numbers */
6934 if ((udp->uh_dport != net->port) ||
6935 (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
6936 SCTP_TCB_UNLOCK(stcb);
6939 /* Check the verification tag */
6940 if (ntohl(sh->v_tag) != 0) {
6942 * This must be the verification tag used for
6943 * sending out packets. We don't consider packets
6944 * reflecting the verification tag.
6946 if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
6947 SCTP_TCB_UNLOCK(stcb);
6951 if (ntohs(outer_ip->ip_len) >=
6953 8 + (inner_ip->ip_hl << 2) + 8 + 20) {
6955 * In this case we can check if we got an
6956 * INIT chunk and if the initiate tag
6959 ch = (struct sctp_init_chunk *)(sh + 1);
6960 if ((ch->ch.chunk_type != SCTP_INITIATION) ||
6961 (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
6962 SCTP_TCB_UNLOCK(stcb);
6966 SCTP_TCB_UNLOCK(stcb);
6970 type = icmp->icmp_type;
6971 code = icmp->icmp_code;
6972 if ((type == ICMP_UNREACH) &&
6973 (code == ICMP_UNREACH_PORT)) {
6974 code = ICMP_UNREACH_PROTOCOL;
6976 sctp_notify(inp, stcb, net, type, code,
6977 ntohs(inner_ip->ip_len),
6978 (uint32_t)ntohs(icmp->icmp_nextmtu));
6980 if ((stcb == NULL) && (inp != NULL)) {
6981 /* reduce ref-count */
6982 SCTP_INP_WLOCK(inp);
6983 SCTP_INP_DECR_REF(inp);
6984 SCTP_INP_WUNLOCK(inp);
6987 SCTP_TCB_UNLOCK(stcb);
6996 sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED)
6998 struct ip6ctlparam *ip6cp;
6999 struct sctp_inpcb *inp;
7000 struct sctp_tcb *stcb;
7001 struct sctp_nets *net;
7004 struct sockaddr_in6 src, dst;
7007 ip6cp = (struct ip6ctlparam *)d;
7009 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid.
7011 if (ip6cp->ip6c_m == NULL) {
7015 * Check if we can safely examine the ports and the verification tag
7016 * of the SCTP common header.
7018 if (ip6cp->ip6c_m->m_pkthdr.len <
7019 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) {
7022 /* Copy out the UDP header. */
7023 memset(&udp, 0, sizeof(struct udphdr));
7024 m_copydata(ip6cp->ip6c_m,
7026 sizeof(struct udphdr),
7028 /* Copy out the port numbers and the verification tag. */
7029 memset(&sh, 0, sizeof(struct sctphdr));
7030 m_copydata(ip6cp->ip6c_m,
7031 ip6cp->ip6c_off + sizeof(struct udphdr),
7032 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
7034 memset(&src, 0, sizeof(struct sockaddr_in6));
7035 src.sin6_family = AF_INET6;
7036 src.sin6_len = sizeof(struct sockaddr_in6);
7037 src.sin6_port = sh.src_port;
7038 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
7039 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7042 memset(&dst, 0, sizeof(struct sockaddr_in6));
7043 dst.sin6_family = AF_INET6;
7044 dst.sin6_len = sizeof(struct sockaddr_in6);
7045 dst.sin6_port = sh.dest_port;
7046 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
7047 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7052 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7053 (struct sockaddr *)&src,
7054 &inp, &net, 1, SCTP_DEFAULT_VRFID);
7055 if ((stcb != NULL) &&
7058 /* Check the UDP port numbers */
7059 if ((udp.uh_dport != net->port) ||
7060 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7061 SCTP_TCB_UNLOCK(stcb);
7064 /* Check the verification tag */
7065 if (ntohl(sh.v_tag) != 0) {
7067 * This must be the verification tag used for
7068 * sending out packets. We don't consider packets
7069 * reflecting the verification tag.
7071 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
7072 SCTP_TCB_UNLOCK(stcb);
7076 if (ip6cp->ip6c_m->m_pkthdr.len >=
7077 ip6cp->ip6c_off + sizeof(struct udphdr) +
7078 sizeof(struct sctphdr) +
7079 sizeof(struct sctp_chunkhdr) +
7080 offsetof(struct sctp_init, a_rwnd)) {
7082 * In this case we can check if we got an
7083 * INIT chunk and if the initiate tag
7086 uint32_t initiate_tag;
7089 m_copydata(ip6cp->ip6c_m,
7091 sizeof(struct udphdr) +
7092 sizeof(struct sctphdr),
7094 (caddr_t)&chunk_type);
7095 m_copydata(ip6cp->ip6c_m,
7097 sizeof(struct udphdr) +
7098 sizeof(struct sctphdr) +
7099 sizeof(struct sctp_chunkhdr),
7101 (caddr_t)&initiate_tag);
7102 if ((chunk_type != SCTP_INITIATION) ||
7103 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
7104 SCTP_TCB_UNLOCK(stcb);
7108 SCTP_TCB_UNLOCK(stcb);
7112 type = ip6cp->ip6c_icmp6->icmp6_type;
7113 code = ip6cp->ip6c_icmp6->icmp6_code;
7114 if ((type == ICMP6_DST_UNREACH) &&
7115 (code == ICMP6_DST_UNREACH_NOPORT)) {
7116 type = ICMP6_PARAM_PROB;
7117 code = ICMP6_PARAMPROB_NEXTHEADER;
7119 sctp6_notify(inp, stcb, net, type, code,
7120 ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
7122 if ((stcb == NULL) && (inp != NULL)) {
7123 /* reduce inp's ref-count */
7124 SCTP_INP_WLOCK(inp);
7125 SCTP_INP_DECR_REF(inp);
7126 SCTP_INP_WUNLOCK(inp);
7129 SCTP_TCB_UNLOCK(stcb);
7136 sctp_over_udp_stop(void)
7139 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7143 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7144 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7145 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7149 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7150 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7151 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7157 sctp_over_udp_start(void)
7162 struct sockaddr_in sin;
7165 struct sockaddr_in6 sin6;
7168 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7171 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7172 if (ntohs(port) == 0) {
7173 /* Must have a port set */
7177 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7178 /* Already running -- must stop first */
7183 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7184 /* Already running -- must stop first */
7189 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7190 SOCK_DGRAM, IPPROTO_UDP,
7191 curthread->td_ucred, curthread))) {
7192 sctp_over_udp_stop();
7195 /* Call the special UDP hook. */
7196 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7197 sctp_recv_udp_tunneled_packet,
7198 sctp_recv_icmp_tunneled_packet,
7200 sctp_over_udp_stop();
7203 /* Ok, we have a socket, bind it to the port. */
7204 memset(&sin, 0, sizeof(struct sockaddr_in));
7205 sin.sin_len = sizeof(struct sockaddr_in);
7206 sin.sin_family = AF_INET;
7207 sin.sin_port = htons(port);
7208 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7209 (struct sockaddr *)&sin, curthread))) {
7210 sctp_over_udp_stop();
7215 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7216 SOCK_DGRAM, IPPROTO_UDP,
7217 curthread->td_ucred, curthread))) {
7218 sctp_over_udp_stop();
7221 /* Call the special UDP hook. */
7222 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7223 sctp_recv_udp_tunneled_packet,
7224 sctp_recv_icmp6_tunneled_packet,
7226 sctp_over_udp_stop();
7229 /* Ok, we have a socket, bind it to the port. */
7230 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7231 sin6.sin6_len = sizeof(struct sockaddr_in6);
7232 sin6.sin6_family = AF_INET6;
7233 sin6.sin6_port = htons(port);
7234 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7235 (struct sockaddr *)&sin6, curthread))) {
7236 sctp_over_udp_stop();
7244 * sctp_min_mtu ()returns the minimum of all non-zero arguments.
7245 * If all arguments are zero, zero is returned.
7248 sctp_min_mtu(uint32_t mtu1, uint32_t mtu2, uint32_t mtu3)
7253 return (min(mtu1, min(mtu2, mtu3)));
7255 return (min(mtu1, mtu2));
7259 return (min(mtu1, mtu3));
7267 return (min(mtu2, mtu3));
7278 sctp_hc_set_mtu(union sctp_sockstore *addr, uint16_t fibnum, uint32_t mtu)
7280 struct in_conninfo inc;
7282 memset(&inc, 0, sizeof(struct in_conninfo));
7283 inc.inc_fibnum = fibnum;
7284 switch (addr->sa.sa_family) {
7287 inc.inc_faddr = addr->sin.sin_addr;
7292 inc.inc_flags |= INC_ISIPV6;
7293 inc.inc6_faddr = addr->sin6.sin6_addr;
7299 tcp_hc_updatemtu(&inc, (u_long)mtu);
7303 sctp_hc_get_mtu(union sctp_sockstore *addr, uint16_t fibnum)
7305 struct in_conninfo inc;
7307 memset(&inc, 0, sizeof(struct in_conninfo));
7308 inc.inc_fibnum = fibnum;
7309 switch (addr->sa.sa_family) {
7312 inc.inc_faddr = addr->sin.sin_addr;
7317 inc.inc_flags |= INC_ISIPV6;
7318 inc.inc6_faddr = addr->sin6.sin6_addr;
7324 return ((uint32_t)tcp_hc_getmtu(&inc));