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 #include <netinet/udp.h>
53 #include <netinet/udp_var.h>
58 #define KTR_SCTP KTR_SUBSYS
61 extern struct sctp_cc_functions sctp_cc_functions[];
62 extern struct sctp_ss_functions sctp_ss_functions[];
65 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr)
67 struct sctp_cwnd_log sctp_clog;
69 sctp_clog.x.sb.stcb = stcb;
70 sctp_clog.x.sb.so_sbcc = sb->sb_cc;
72 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
74 sctp_clog.x.sb.stcb_sbcc = 0;
75 sctp_clog.x.sb.incr = incr;
76 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
79 sctp_clog.x.misc.log1,
80 sctp_clog.x.misc.log2,
81 sctp_clog.x.misc.log3,
82 sctp_clog.x.misc.log4);
86 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
88 struct sctp_cwnd_log sctp_clog;
90 sctp_clog.x.close.inp = (void *)inp;
91 sctp_clog.x.close.sctp_flags = inp->sctp_flags;
93 sctp_clog.x.close.stcb = (void *)stcb;
94 sctp_clog.x.close.state = (uint16_t) stcb->asoc.state;
96 sctp_clog.x.close.stcb = 0;
97 sctp_clog.x.close.state = 0;
99 sctp_clog.x.close.loc = loc;
100 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
101 SCTP_LOG_EVENT_CLOSE,
103 sctp_clog.x.misc.log1,
104 sctp_clog.x.misc.log2,
105 sctp_clog.x.misc.log3,
106 sctp_clog.x.misc.log4);
110 rto_logging(struct sctp_nets *net, int from)
112 struct sctp_cwnd_log sctp_clog;
114 memset(&sctp_clog, 0, sizeof(sctp_clog));
115 sctp_clog.x.rto.net = (void *)net;
116 sctp_clog.x.rto.rtt = net->rtt / 1000;
117 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
120 sctp_clog.x.misc.log1,
121 sctp_clog.x.misc.log2,
122 sctp_clog.x.misc.log3,
123 sctp_clog.x.misc.log4);
127 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
129 struct sctp_cwnd_log sctp_clog;
131 sctp_clog.x.strlog.stcb = stcb;
132 sctp_clog.x.strlog.n_tsn = tsn;
133 sctp_clog.x.strlog.n_sseq = sseq;
134 sctp_clog.x.strlog.e_tsn = 0;
135 sctp_clog.x.strlog.e_sseq = 0;
136 sctp_clog.x.strlog.strm = stream;
137 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
140 sctp_clog.x.misc.log1,
141 sctp_clog.x.misc.log2,
142 sctp_clog.x.misc.log3,
143 sctp_clog.x.misc.log4);
147 sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
149 struct sctp_cwnd_log sctp_clog;
151 sctp_clog.x.nagle.stcb = (void *)stcb;
152 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
153 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
154 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
155 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
156 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
157 SCTP_LOG_EVENT_NAGLE,
159 sctp_clog.x.misc.log1,
160 sctp_clog.x.misc.log2,
161 sctp_clog.x.misc.log3,
162 sctp_clog.x.misc.log4);
166 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
168 struct sctp_cwnd_log sctp_clog;
170 sctp_clog.x.sack.cumack = cumack;
171 sctp_clog.x.sack.oldcumack = old_cumack;
172 sctp_clog.x.sack.tsn = tsn;
173 sctp_clog.x.sack.numGaps = gaps;
174 sctp_clog.x.sack.numDups = dups;
175 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
178 sctp_clog.x.misc.log1,
179 sctp_clog.x.misc.log2,
180 sctp_clog.x.misc.log3,
181 sctp_clog.x.misc.log4);
185 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
187 struct sctp_cwnd_log sctp_clog;
189 memset(&sctp_clog, 0, sizeof(sctp_clog));
190 sctp_clog.x.map.base = map;
191 sctp_clog.x.map.cum = cum;
192 sctp_clog.x.map.high = high;
193 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
196 sctp_clog.x.misc.log1,
197 sctp_clog.x.misc.log2,
198 sctp_clog.x.misc.log3,
199 sctp_clog.x.misc.log4);
203 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from)
205 struct sctp_cwnd_log sctp_clog;
207 memset(&sctp_clog, 0, sizeof(sctp_clog));
208 sctp_clog.x.fr.largest_tsn = biggest_tsn;
209 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
210 sctp_clog.x.fr.tsn = tsn;
211 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
214 sctp_clog.x.misc.log1,
215 sctp_clog.x.misc.log2,
216 sctp_clog.x.misc.log3,
217 sctp_clog.x.misc.log4);
220 #ifdef SCTP_MBUF_LOGGING
222 sctp_log_mb(struct mbuf *m, int from)
224 struct sctp_cwnd_log sctp_clog;
226 sctp_clog.x.mb.mp = m;
227 sctp_clog.x.mb.mbuf_flags = (uint8_t) (SCTP_BUF_GET_FLAGS(m));
228 sctp_clog.x.mb.size = (uint16_t) (SCTP_BUF_LEN(m));
229 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
230 if (SCTP_BUF_IS_EXTENDED(m)) {
231 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
232 sctp_clog.x.mb.refcnt = (uint8_t) (SCTP_BUF_EXTEND_REFCNT(m));
234 sctp_clog.x.mb.ext = 0;
235 sctp_clog.x.mb.refcnt = 0;
237 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
240 sctp_clog.x.misc.log1,
241 sctp_clog.x.misc.log2,
242 sctp_clog.x.misc.log3,
243 sctp_clog.x.misc.log4);
247 sctp_log_mbc(struct mbuf *m, int from)
251 for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
252 sctp_log_mb(mat, from);
259 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from)
261 struct sctp_cwnd_log sctp_clog;
263 if (control == NULL) {
264 SCTP_PRINTF("Gak log of NULL?\n");
267 sctp_clog.x.strlog.stcb = control->stcb;
268 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
269 sctp_clog.x.strlog.n_sseq = control->sinfo_ssn;
270 sctp_clog.x.strlog.strm = control->sinfo_stream;
271 if (poschk != NULL) {
272 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
273 sctp_clog.x.strlog.e_sseq = poschk->sinfo_ssn;
275 sctp_clog.x.strlog.e_tsn = 0;
276 sctp_clog.x.strlog.e_sseq = 0;
278 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
281 sctp_clog.x.misc.log1,
282 sctp_clog.x.misc.log2,
283 sctp_clog.x.misc.log3,
284 sctp_clog.x.misc.log4);
288 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
290 struct sctp_cwnd_log sctp_clog;
292 sctp_clog.x.cwnd.net = net;
293 if (stcb->asoc.send_queue_cnt > 255)
294 sctp_clog.x.cwnd.cnt_in_send = 255;
296 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
297 if (stcb->asoc.stream_queue_cnt > 255)
298 sctp_clog.x.cwnd.cnt_in_str = 255;
300 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
303 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
304 sctp_clog.x.cwnd.inflight = net->flight_size;
305 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
306 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
307 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
309 if (SCTP_CWNDLOG_PRESEND == from) {
310 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
312 sctp_clog.x.cwnd.cwnd_augment = augment;
313 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
316 sctp_clog.x.misc.log1,
317 sctp_clog.x.misc.log2,
318 sctp_clog.x.misc.log3,
319 sctp_clog.x.misc.log4);
323 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
325 struct sctp_cwnd_log sctp_clog;
327 memset(&sctp_clog, 0, sizeof(sctp_clog));
329 sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
332 sctp_clog.x.lock.sock = (void *)NULL;
334 sctp_clog.x.lock.inp = (void *)inp;
336 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
338 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
341 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
342 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
344 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
345 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
347 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
348 if (inp && (inp->sctp_socket)) {
349 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
350 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
351 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
353 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
354 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
355 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
357 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
360 sctp_clog.x.misc.log1,
361 sctp_clog.x.misc.log2,
362 sctp_clog.x.misc.log3,
363 sctp_clog.x.misc.log4);
367 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
369 struct sctp_cwnd_log sctp_clog;
371 memset(&sctp_clog, 0, sizeof(sctp_clog));
372 sctp_clog.x.cwnd.net = net;
373 sctp_clog.x.cwnd.cwnd_new_value = error;
374 sctp_clog.x.cwnd.inflight = net->flight_size;
375 sctp_clog.x.cwnd.cwnd_augment = burst;
376 if (stcb->asoc.send_queue_cnt > 255)
377 sctp_clog.x.cwnd.cnt_in_send = 255;
379 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
380 if (stcb->asoc.stream_queue_cnt > 255)
381 sctp_clog.x.cwnd.cnt_in_str = 255;
383 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
384 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
385 SCTP_LOG_EVENT_MAXBURST,
387 sctp_clog.x.misc.log1,
388 sctp_clog.x.misc.log2,
389 sctp_clog.x.misc.log3,
390 sctp_clog.x.misc.log4);
394 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
396 struct sctp_cwnd_log sctp_clog;
398 sctp_clog.x.rwnd.rwnd = peers_rwnd;
399 sctp_clog.x.rwnd.send_size = snd_size;
400 sctp_clog.x.rwnd.overhead = overhead;
401 sctp_clog.x.rwnd.new_rwnd = 0;
402 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
405 sctp_clog.x.misc.log1,
406 sctp_clog.x.misc.log2,
407 sctp_clog.x.misc.log3,
408 sctp_clog.x.misc.log4);
412 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
414 struct sctp_cwnd_log sctp_clog;
416 sctp_clog.x.rwnd.rwnd = peers_rwnd;
417 sctp_clog.x.rwnd.send_size = flight_size;
418 sctp_clog.x.rwnd.overhead = overhead;
419 sctp_clog.x.rwnd.new_rwnd = a_rwndval;
420 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
423 sctp_clog.x.misc.log1,
424 sctp_clog.x.misc.log2,
425 sctp_clog.x.misc.log3,
426 sctp_clog.x.misc.log4);
429 #ifdef SCTP_MBCNT_LOGGING
431 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
433 struct sctp_cwnd_log sctp_clog;
435 sctp_clog.x.mbcnt.total_queue_size = total_oq;
436 sctp_clog.x.mbcnt.size_change = book;
437 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
438 sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
439 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
440 SCTP_LOG_EVENT_MBCNT,
442 sctp_clog.x.misc.log1,
443 sctp_clog.x.misc.log2,
444 sctp_clog.x.misc.log3,
445 sctp_clog.x.misc.log4);
451 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
453 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
460 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from)
462 struct sctp_cwnd_log sctp_clog;
464 sctp_clog.x.wake.stcb = (void *)stcb;
465 sctp_clog.x.wake.wake_cnt = wake_cnt;
466 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
467 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
468 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
470 if (stcb->asoc.stream_queue_cnt < 0xff)
471 sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt;
473 sctp_clog.x.wake.stream_qcnt = 0xff;
475 if (stcb->asoc.chunks_on_out_queue < 0xff)
476 sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue;
478 sctp_clog.x.wake.chunks_on_oque = 0xff;
480 sctp_clog.x.wake.sctpflags = 0;
481 /* set in the defered mode stuff */
482 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
483 sctp_clog.x.wake.sctpflags |= 1;
484 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
485 sctp_clog.x.wake.sctpflags |= 2;
486 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
487 sctp_clog.x.wake.sctpflags |= 4;
488 /* what about the sb */
489 if (stcb->sctp_socket) {
490 struct socket *so = stcb->sctp_socket;
492 sctp_clog.x.wake.sbflags = (uint8_t) ((so->so_snd.sb_flags & 0x00ff));
494 sctp_clog.x.wake.sbflags = 0xff;
496 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
499 sctp_clog.x.misc.log1,
500 sctp_clog.x.misc.log2,
501 sctp_clog.x.misc.log3,
502 sctp_clog.x.misc.log4);
506 sctp_log_block(uint8_t from, struct sctp_association *asoc, int sendlen)
508 struct sctp_cwnd_log sctp_clog;
510 sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
511 sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt);
512 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
513 sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt;
514 sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue;
515 sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight / 1024);
516 sctp_clog.x.blk.sndlen = sendlen;
517 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
518 SCTP_LOG_EVENT_BLOCK,
520 sctp_clog.x.misc.log1,
521 sctp_clog.x.misc.log2,
522 sctp_clog.x.misc.log3,
523 sctp_clog.x.misc.log4);
527 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
529 /* May need to fix this if ktrdump does not work */
533 #ifdef SCTP_AUDITING_ENABLED
534 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
535 static int sctp_audit_indx = 0;
539 sctp_print_audit_report(void)
545 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
546 if ((sctp_audit_data[i][0] == 0xe0) &&
547 (sctp_audit_data[i][1] == 0x01)) {
550 } else if (sctp_audit_data[i][0] == 0xf0) {
553 } else if ((sctp_audit_data[i][0] == 0xc0) &&
554 (sctp_audit_data[i][1] == 0x01)) {
558 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
559 (uint32_t) sctp_audit_data[i][1]);
564 for (i = 0; i < sctp_audit_indx; i++) {
565 if ((sctp_audit_data[i][0] == 0xe0) &&
566 (sctp_audit_data[i][1] == 0x01)) {
569 } else if (sctp_audit_data[i][0] == 0xf0) {
572 } else if ((sctp_audit_data[i][0] == 0xc0) &&
573 (sctp_audit_data[i][1] == 0x01)) {
577 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
578 (uint32_t) sctp_audit_data[i][1]);
587 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
588 struct sctp_nets *net)
590 int resend_cnt, tot_out, rep, tot_book_cnt;
591 struct sctp_nets *lnet;
592 struct sctp_tmit_chunk *chk;
594 sctp_audit_data[sctp_audit_indx][0] = 0xAA;
595 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
597 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
601 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
602 sctp_audit_data[sctp_audit_indx][1] = 0x01;
604 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
610 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
611 sctp_audit_data[sctp_audit_indx][1] = 0x02;
613 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
618 sctp_audit_data[sctp_audit_indx][0] = 0xA1;
619 sctp_audit_data[sctp_audit_indx][1] =
620 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
622 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
627 resend_cnt = tot_out = 0;
628 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
629 if (chk->sent == SCTP_DATAGRAM_RESEND) {
631 } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
632 tot_out += chk->book_size;
636 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
637 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
638 sctp_audit_data[sctp_audit_indx][1] = 0xA1;
640 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
643 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
644 resend_cnt, stcb->asoc.sent_queue_retran_cnt);
646 stcb->asoc.sent_queue_retran_cnt = resend_cnt;
647 sctp_audit_data[sctp_audit_indx][0] = 0xA2;
648 sctp_audit_data[sctp_audit_indx][1] =
649 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
651 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
655 if (tot_out != stcb->asoc.total_flight) {
656 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
657 sctp_audit_data[sctp_audit_indx][1] = 0xA2;
659 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
663 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
664 (int)stcb->asoc.total_flight);
665 stcb->asoc.total_flight = tot_out;
667 if (tot_book_cnt != stcb->asoc.total_flight_count) {
668 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
669 sctp_audit_data[sctp_audit_indx][1] = 0xA5;
671 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
675 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
677 stcb->asoc.total_flight_count = tot_book_cnt;
680 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
681 tot_out += lnet->flight_size;
683 if (tot_out != stcb->asoc.total_flight) {
684 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
685 sctp_audit_data[sctp_audit_indx][1] = 0xA3;
687 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
691 SCTP_PRINTF("real flight:%d net total was %d\n",
692 stcb->asoc.total_flight, tot_out);
693 /* now corrective action */
694 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
697 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
698 if ((chk->whoTo == lnet) &&
699 (chk->sent < SCTP_DATAGRAM_RESEND)) {
700 tot_out += chk->book_size;
703 if (lnet->flight_size != tot_out) {
704 SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
705 (void *)lnet, lnet->flight_size,
707 lnet->flight_size = tot_out;
712 sctp_print_audit_report();
717 sctp_audit_log(uint8_t ev, uint8_t fd)
720 sctp_audit_data[sctp_audit_indx][0] = ev;
721 sctp_audit_data[sctp_audit_indx][1] = fd;
723 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
731 * sctp_stop_timers_for_shutdown() should be called
732 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
733 * state to make sure that all timers are stopped.
736 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
738 struct sctp_association *asoc;
739 struct sctp_nets *net;
743 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
744 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
745 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
746 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
747 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
748 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
749 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
750 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
755 * a list of sizes based on typical mtu's, used only if next hop size not
758 static uint32_t sctp_mtu_sizes[] = {
780 * Return the largest MTU smaller than val. If there is no
781 * entry, just return val.
784 sctp_get_prev_mtu(uint32_t val)
788 if (val <= sctp_mtu_sizes[0]) {
791 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
792 if (val <= sctp_mtu_sizes[i]) {
796 return (sctp_mtu_sizes[i - 1]);
800 * Return the smallest MTU larger than val. If there is no
801 * entry, just return val.
804 sctp_get_next_mtu(uint32_t val)
806 /* select another MTU that is just bigger than this one */
809 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
810 if (val < sctp_mtu_sizes[i]) {
811 return (sctp_mtu_sizes[i]);
818 sctp_fill_random_store(struct sctp_pcb *m)
821 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
822 * our counter. The result becomes our good random numbers and we
823 * then setup to give these out. Note that we do no locking to
824 * protect this. This is ok, since if competing folks call this we
825 * will get more gobbled gook in the random store which is what we
826 * want. There is a danger that two guys will use the same random
827 * numbers, but thats ok too since that is random as well :->
830 (void)sctp_hmac(SCTP_HMAC, (uint8_t *) m->random_numbers,
831 sizeof(m->random_numbers), (uint8_t *) & m->random_counter,
832 sizeof(m->random_counter), (uint8_t *) m->random_store);
837 sctp_select_initial_TSN(struct sctp_pcb *inp)
840 * A true implementation should use random selection process to get
841 * the initial stream sequence number, using RFC1750 as a good
846 int store_at, new_store;
848 if (inp->initial_sequence_debug != 0) {
851 ret = inp->initial_sequence_debug;
852 inp->initial_sequence_debug++;
856 store_at = inp->store_at;
857 new_store = store_at + sizeof(uint32_t);
858 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
861 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
864 if (new_store == 0) {
865 /* Refill the random store */
866 sctp_fill_random_store(inp);
868 p = &inp->random_store[store_at];
875 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
881 (void)SCTP_GETTIME_TIMEVAL(&now);
884 x = sctp_select_initial_TSN(&inp->sctp_ep);
889 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
897 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
898 uint32_t override_tag, uint32_t vrf_id)
900 struct sctp_association *asoc;
903 * Anything set to zero is taken care of by the allocation routine's
908 * Up front select what scoping to apply on addresses I tell my peer
909 * Not sure what to do with these right now, we will need to come up
910 * with a way to set them. We may need to pass them through from the
911 * caller in the sctp_aloc_assoc() function.
915 #if defined(SCTP_DETAILED_STR_STATS)
921 /* init all variables to a known value. */
922 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
923 asoc->max_burst = inp->sctp_ep.max_burst;
924 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
925 asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
926 asoc->cookie_life = inp->sctp_ep.def_cookie_life;
927 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
928 asoc->ecn_supported = inp->ecn_supported;
929 asoc->prsctp_supported = inp->prsctp_supported;
930 asoc->auth_supported = inp->auth_supported;
931 asoc->asconf_supported = inp->asconf_supported;
932 asoc->reconfig_supported = inp->reconfig_supported;
933 asoc->nrsack_supported = inp->nrsack_supported;
934 asoc->pktdrop_supported = inp->pktdrop_supported;
935 asoc->sctp_cmt_pf = (uint8_t) 0;
936 asoc->sctp_frag_point = inp->sctp_frag_point;
937 asoc->sctp_features = inp->sctp_features;
938 asoc->default_dscp = inp->sctp_ep.default_dscp;
939 asoc->max_cwnd = inp->max_cwnd;
941 if (inp->sctp_ep.default_flowlabel) {
942 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
944 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
945 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
946 asoc->default_flowlabel &= 0x000fffff;
947 asoc->default_flowlabel |= 0x80000000;
949 asoc->default_flowlabel = 0;
953 asoc->sb_send_resv = 0;
955 asoc->my_vtag = override_tag;
957 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
959 /* Get the nonce tags */
960 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
961 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
962 asoc->vrf_id = vrf_id;
964 #ifdef SCTP_ASOCLOG_OF_TSNS
966 asoc->tsn_out_at = 0;
967 asoc->tsn_in_wrapped = 0;
968 asoc->tsn_out_wrapped = 0;
969 asoc->cumack_log_at = 0;
970 asoc->cumack_log_atsnt = 0;
972 #ifdef SCTP_FS_SPEC_LOG
976 asoc->assoc_up_sent = 0;
977 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
978 sctp_select_initial_TSN(&inp->sctp_ep);
979 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
980 /* we are optimisitic here */
981 asoc->peer_supports_nat = 0;
982 asoc->sent_queue_retran_cnt = 0;
985 asoc->last_net_cmt_send_started = NULL;
987 /* This will need to be adjusted */
988 asoc->last_acked_seq = asoc->init_seq_number - 1;
989 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
990 asoc->asconf_seq_in = asoc->last_acked_seq;
992 /* here we are different, we hold the next one we expect */
993 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
995 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
996 asoc->initial_rto = inp->sctp_ep.initial_rto;
998 asoc->max_init_times = inp->sctp_ep.max_init_times;
999 asoc->max_send_times = inp->sctp_ep.max_send_times;
1000 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
1001 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
1002 asoc->free_chunk_cnt = 0;
1004 asoc->iam_blocking = 0;
1005 asoc->context = inp->sctp_context;
1006 asoc->local_strreset_support = inp->local_strreset_support;
1007 asoc->def_send = inp->def_send;
1008 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1009 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
1010 asoc->pr_sctp_cnt = 0;
1011 asoc->total_output_queue_size = 0;
1013 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1014 asoc->scope.ipv6_addr_legal = 1;
1015 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1016 asoc->scope.ipv4_addr_legal = 1;
1018 asoc->scope.ipv4_addr_legal = 0;
1021 asoc->scope.ipv6_addr_legal = 0;
1022 asoc->scope.ipv4_addr_legal = 1;
1025 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1026 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1028 asoc->smallest_mtu = inp->sctp_frag_point;
1029 asoc->minrto = inp->sctp_ep.sctp_minrto;
1030 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1032 asoc->locked_on_sending = NULL;
1033 asoc->stream_locked_on = 0;
1034 asoc->ecn_echo_cnt_onq = 0;
1035 asoc->stream_locked = 0;
1037 asoc->send_sack = 1;
1039 LIST_INIT(&asoc->sctp_restricted_addrs);
1041 TAILQ_INIT(&asoc->nets);
1042 TAILQ_INIT(&asoc->pending_reply_queue);
1043 TAILQ_INIT(&asoc->asconf_ack_sent);
1044 /* Setup to fill the hb random cache at first HB */
1045 asoc->hb_random_idx = 4;
1047 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1049 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1050 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1052 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1053 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1056 * Now the stream parameters, here we allocate space for all streams
1057 * that we request by default.
1059 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1060 inp->sctp_ep.pre_open_stream_count;
1061 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1062 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1064 if (asoc->strmout == NULL) {
1065 /* big trouble no memory */
1066 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1069 for (i = 0; i < asoc->streamoutcnt; i++) {
1071 * inbound side must be set to 0xffff, also NOTE when we get
1072 * the INIT-ACK back (for INIT sender) we MUST reduce the
1073 * count (streamoutcnt) but first check if we sent to any of
1074 * the upper streams that were dropped (if some were). Those
1075 * that were dropped must be notified to the upper layer as
1078 asoc->strmout[i].next_sequence_send = 0x0;
1079 TAILQ_INIT(&asoc->strmout[i].outqueue);
1080 asoc->strmout[i].chunks_on_queues = 0;
1081 #if defined(SCTP_DETAILED_STR_STATS)
1082 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1083 asoc->strmout[i].abandoned_sent[j] = 0;
1084 asoc->strmout[i].abandoned_unsent[j] = 0;
1087 asoc->strmout[i].abandoned_sent[0] = 0;
1088 asoc->strmout[i].abandoned_unsent[0] = 0;
1090 asoc->strmout[i].stream_no = i;
1091 asoc->strmout[i].last_msg_incomplete = 0;
1092 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL);
1094 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1096 /* Now the mapping array */
1097 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1098 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1100 if (asoc->mapping_array == NULL) {
1101 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1102 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1105 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1106 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1108 if (asoc->nr_mapping_array == NULL) {
1109 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1110 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1111 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1114 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1116 /* Now the init of the other outqueues */
1117 TAILQ_INIT(&asoc->free_chunks);
1118 TAILQ_INIT(&asoc->control_send_queue);
1119 TAILQ_INIT(&asoc->asconf_send_queue);
1120 TAILQ_INIT(&asoc->send_queue);
1121 TAILQ_INIT(&asoc->sent_queue);
1122 TAILQ_INIT(&asoc->reasmqueue);
1123 TAILQ_INIT(&asoc->resetHead);
1124 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1125 TAILQ_INIT(&asoc->asconf_queue);
1126 /* authentication fields */
1127 asoc->authinfo.random = NULL;
1128 asoc->authinfo.active_keyid = 0;
1129 asoc->authinfo.assoc_key = NULL;
1130 asoc->authinfo.assoc_keyid = 0;
1131 asoc->authinfo.recv_key = NULL;
1132 asoc->authinfo.recv_keyid = 0;
1133 LIST_INIT(&asoc->shared_keys);
1134 asoc->marked_retrans = 0;
1135 asoc->port = inp->sctp_ep.port;
1139 asoc->timoshutdown = 0;
1140 asoc->timoheartbeat = 0;
1141 asoc->timocookie = 0;
1142 asoc->timoshutdownack = 0;
1143 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1144 asoc->discontinuity_time = asoc->start_time;
1145 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1146 asoc->abandoned_unsent[i] = 0;
1147 asoc->abandoned_sent[i] = 0;
1150 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1151 * freed later when the association is freed.
1157 sctp_print_mapping_array(struct sctp_association *asoc)
1159 unsigned int i, limit;
1161 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1162 asoc->mapping_array_size,
1163 asoc->mapping_array_base_tsn,
1164 asoc->cumulative_tsn,
1165 asoc->highest_tsn_inside_map,
1166 asoc->highest_tsn_inside_nr_map);
1167 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1168 if (asoc->mapping_array[limit - 1] != 0) {
1172 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1173 for (i = 0; i < limit; i++) {
1174 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1178 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1179 if (asoc->nr_mapping_array[limit - 1]) {
1183 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1184 for (i = 0; i < limit; i++) {
1185 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1192 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1194 /* mapping array needs to grow */
1195 uint8_t *new_array1, *new_array2;
1198 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1199 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1200 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1201 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1202 /* can't get more, forget it */
1203 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1205 SCTP_FREE(new_array1, SCTP_M_MAP);
1208 SCTP_FREE(new_array2, SCTP_M_MAP);
1212 memset(new_array1, 0, new_size);
1213 memset(new_array2, 0, new_size);
1214 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1215 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1216 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1217 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1218 asoc->mapping_array = new_array1;
1219 asoc->nr_mapping_array = new_array2;
1220 asoc->mapping_array_size = new_size;
1226 sctp_iterator_work(struct sctp_iterator *it)
1228 int iteration_count = 0;
1231 struct sctp_inpcb *tinp;
1233 SCTP_INP_INFO_RLOCK();
1234 SCTP_ITERATOR_LOCK();
1236 SCTP_INP_RLOCK(it->inp);
1237 SCTP_INP_DECR_REF(it->inp);
1239 if (it->inp == NULL) {
1240 /* iterator is complete */
1242 SCTP_ITERATOR_UNLOCK();
1243 SCTP_INP_INFO_RUNLOCK();
1244 if (it->function_atend != NULL) {
1245 (*it->function_atend) (it->pointer, it->val);
1247 SCTP_FREE(it, SCTP_M_ITER);
1254 SCTP_INP_RLOCK(it->inp);
1256 while (((it->pcb_flags) &&
1257 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1258 ((it->pcb_features) &&
1259 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1260 /* endpoint flags or features don't match, so keep looking */
1261 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1262 SCTP_INP_RUNLOCK(it->inp);
1263 goto done_with_iterator;
1266 it->inp = LIST_NEXT(it->inp, sctp_list);
1267 SCTP_INP_RUNLOCK(tinp);
1268 if (it->inp == NULL) {
1269 goto done_with_iterator;
1271 SCTP_INP_RLOCK(it->inp);
1273 /* now go through each assoc which is in the desired state */
1274 if (it->done_current_ep == 0) {
1275 if (it->function_inp != NULL)
1276 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1277 it->done_current_ep = 1;
1279 if (it->stcb == NULL) {
1280 /* run the per instance function */
1281 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1283 if ((inp_skip) || it->stcb == NULL) {
1284 if (it->function_inp_end != NULL) {
1285 inp_skip = (*it->function_inp_end) (it->inp,
1289 SCTP_INP_RUNLOCK(it->inp);
1293 SCTP_TCB_LOCK(it->stcb);
1294 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1295 /* not in the right state... keep looking */
1296 SCTP_TCB_UNLOCK(it->stcb);
1299 /* see if we have limited out the iterator loop */
1301 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1302 /* Pause to let others grab the lock */
1303 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1304 SCTP_TCB_UNLOCK(it->stcb);
1305 SCTP_INP_INCR_REF(it->inp);
1306 SCTP_INP_RUNLOCK(it->inp);
1307 SCTP_ITERATOR_UNLOCK();
1308 SCTP_INP_INFO_RUNLOCK();
1309 SCTP_INP_INFO_RLOCK();
1310 SCTP_ITERATOR_LOCK();
1311 if (sctp_it_ctl.iterator_flags) {
1312 /* We won't be staying here */
1313 SCTP_INP_DECR_REF(it->inp);
1314 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1315 if (sctp_it_ctl.iterator_flags &
1316 SCTP_ITERATOR_STOP_CUR_IT) {
1317 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1318 goto done_with_iterator;
1320 if (sctp_it_ctl.iterator_flags &
1321 SCTP_ITERATOR_STOP_CUR_INP) {
1322 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1325 /* If we reach here huh? */
1326 SCTP_PRINTF("Unknown it ctl flag %x\n",
1327 sctp_it_ctl.iterator_flags);
1328 sctp_it_ctl.iterator_flags = 0;
1330 SCTP_INP_RLOCK(it->inp);
1331 SCTP_INP_DECR_REF(it->inp);
1332 SCTP_TCB_LOCK(it->stcb);
1333 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1334 iteration_count = 0;
1336 /* run function on this one */
1337 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1340 * we lie here, it really needs to have its own type but
1341 * first I must verify that this won't effect things :-0
1343 if (it->no_chunk_output == 0)
1344 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1346 SCTP_TCB_UNLOCK(it->stcb);
1348 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1349 if (it->stcb == NULL) {
1350 /* Run last function */
1351 if (it->function_inp_end != NULL) {
1352 inp_skip = (*it->function_inp_end) (it->inp,
1358 SCTP_INP_RUNLOCK(it->inp);
1360 /* done with all assocs on this endpoint, move on to next endpoint */
1361 it->done_current_ep = 0;
1362 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1365 it->inp = LIST_NEXT(it->inp, sctp_list);
1367 if (it->inp == NULL) {
1368 goto done_with_iterator;
1370 goto select_a_new_ep;
1374 sctp_iterator_worker(void)
1376 struct sctp_iterator *it, *nit;
1378 /* This function is called with the WQ lock in place */
1380 sctp_it_ctl.iterator_running = 1;
1381 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1382 sctp_it_ctl.cur_it = it;
1383 /* now lets work on this one */
1384 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1385 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1386 CURVNET_SET(it->vn);
1387 sctp_iterator_work(it);
1388 sctp_it_ctl.cur_it = NULL;
1390 SCTP_IPI_ITERATOR_WQ_LOCK();
1391 /* sa_ignore FREED_MEMORY */
1393 sctp_it_ctl.iterator_running = 0;
1399 sctp_handle_addr_wq(void)
1401 /* deal with the ADDR wq from the rtsock calls */
1402 struct sctp_laddr *wi, *nwi;
1403 struct sctp_asconf_iterator *asc;
1405 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1406 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1408 /* Try later, no memory */
1409 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1410 (struct sctp_inpcb *)NULL,
1411 (struct sctp_tcb *)NULL,
1412 (struct sctp_nets *)NULL);
1415 LIST_INIT(&asc->list_of_work);
1418 SCTP_WQ_ADDR_LOCK();
1419 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1420 LIST_REMOVE(wi, sctp_nxt_addr);
1421 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1424 SCTP_WQ_ADDR_UNLOCK();
1426 if (asc->cnt == 0) {
1427 SCTP_FREE(asc, SCTP_M_ASC_IT);
1429 (void)sctp_initiate_iterator(sctp_asconf_iterator_ep,
1430 sctp_asconf_iterator_stcb,
1431 NULL, /* No ep end for boundall */
1432 SCTP_PCB_FLAGS_BOUNDALL,
1433 SCTP_PCB_ANY_FEATURES,
1434 SCTP_ASOC_ANY_STATE,
1436 sctp_asconf_iterator_end, NULL, 0);
1441 sctp_timeout_handler(void *t)
1443 struct sctp_inpcb *inp;
1444 struct sctp_tcb *stcb;
1445 struct sctp_nets *net;
1446 struct sctp_timer *tmr;
1448 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1454 tmr = (struct sctp_timer *)t;
1455 inp = (struct sctp_inpcb *)tmr->ep;
1456 stcb = (struct sctp_tcb *)tmr->tcb;
1457 net = (struct sctp_nets *)tmr->net;
1458 CURVNET_SET((struct vnet *)tmr->vnet);
1461 #ifdef SCTP_AUDITING_ENABLED
1462 sctp_audit_log(0xF0, (uint8_t) tmr->type);
1463 sctp_auditing(3, inp, stcb, net);
1466 /* sanity checks... */
1467 if (tmr->self != (void *)tmr) {
1469 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1475 tmr->stopped_from = 0xa001;
1476 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1478 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1484 tmr->stopped_from = 0xa002;
1485 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1489 /* if this is an iterator timeout, get the struct and clear inp */
1490 tmr->stopped_from = 0xa003;
1492 SCTP_INP_INCR_REF(inp);
1493 if ((inp->sctp_socket == NULL) &&
1494 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1495 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1496 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1497 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1498 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1499 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1500 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1501 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1502 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1504 SCTP_INP_DECR_REF(inp);
1509 tmr->stopped_from = 0xa004;
1511 atomic_add_int(&stcb->asoc.refcnt, 1);
1512 if (stcb->asoc.state == 0) {
1513 atomic_add_int(&stcb->asoc.refcnt, -1);
1515 SCTP_INP_DECR_REF(inp);
1521 tmr->stopped_from = 0xa005;
1522 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", tmr->type);
1523 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1525 SCTP_INP_DECR_REF(inp);
1528 atomic_add_int(&stcb->asoc.refcnt, -1);
1533 tmr->stopped_from = 0xa006;
1536 SCTP_TCB_LOCK(stcb);
1537 atomic_add_int(&stcb->asoc.refcnt, -1);
1538 if ((tmr->type != SCTP_TIMER_TYPE_ASOCKILL) &&
1539 ((stcb->asoc.state == 0) ||
1540 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1541 SCTP_TCB_UNLOCK(stcb);
1543 SCTP_INP_DECR_REF(inp);
1549 /* record in stopped what t-o occured */
1550 tmr->stopped_from = tmr->type;
1552 /* mark as being serviced now */
1553 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1555 * Callout has been rescheduled.
1559 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1561 * Not active, so no action.
1565 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1567 /* call the handler for the appropriate timer type */
1568 switch (tmr->type) {
1569 case SCTP_TIMER_TYPE_ZERO_COPY:
1573 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1574 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1577 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1581 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1582 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1585 case SCTP_TIMER_TYPE_ADDR_WQ:
1586 sctp_handle_addr_wq();
1588 case SCTP_TIMER_TYPE_SEND:
1589 if ((stcb == NULL) || (inp == NULL)) {
1592 SCTP_STAT_INCR(sctps_timodata);
1593 stcb->asoc.timodata++;
1594 stcb->asoc.num_send_timers_up--;
1595 if (stcb->asoc.num_send_timers_up < 0) {
1596 stcb->asoc.num_send_timers_up = 0;
1598 SCTP_TCB_LOCK_ASSERT(stcb);
1599 if (sctp_t3rxt_timer(inp, stcb, net)) {
1600 /* no need to unlock on tcb its gone */
1604 SCTP_TCB_LOCK_ASSERT(stcb);
1605 #ifdef SCTP_AUDITING_ENABLED
1606 sctp_auditing(4, inp, stcb, net);
1608 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1609 if ((stcb->asoc.num_send_timers_up == 0) &&
1610 (stcb->asoc.sent_queue_cnt > 0)) {
1611 struct sctp_tmit_chunk *chk;
1614 * safeguard. If there on some on the sent queue
1615 * somewhere but no timers running something is
1616 * wrong... so we start a timer on the first chunk
1617 * on the send queue on whatever net it is sent to.
1619 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1620 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1624 case SCTP_TIMER_TYPE_INIT:
1625 if ((stcb == NULL) || (inp == NULL)) {
1628 SCTP_STAT_INCR(sctps_timoinit);
1629 stcb->asoc.timoinit++;
1630 if (sctp_t1init_timer(inp, stcb, net)) {
1631 /* no need to unlock on tcb its gone */
1634 /* We do output but not here */
1637 case SCTP_TIMER_TYPE_RECV:
1638 if ((stcb == NULL) || (inp == NULL)) {
1641 SCTP_STAT_INCR(sctps_timosack);
1642 stcb->asoc.timosack++;
1643 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1644 #ifdef SCTP_AUDITING_ENABLED
1645 sctp_auditing(4, inp, stcb, net);
1647 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1649 case SCTP_TIMER_TYPE_SHUTDOWN:
1650 if ((stcb == NULL) || (inp == NULL)) {
1653 if (sctp_shutdown_timer(inp, stcb, net)) {
1654 /* no need to unlock on tcb its gone */
1657 SCTP_STAT_INCR(sctps_timoshutdown);
1658 stcb->asoc.timoshutdown++;
1659 #ifdef SCTP_AUDITING_ENABLED
1660 sctp_auditing(4, inp, stcb, net);
1662 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1664 case SCTP_TIMER_TYPE_HEARTBEAT:
1665 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1668 SCTP_STAT_INCR(sctps_timoheartbeat);
1669 stcb->asoc.timoheartbeat++;
1670 if (sctp_heartbeat_timer(inp, stcb, net)) {
1671 /* no need to unlock on tcb its gone */
1674 #ifdef SCTP_AUDITING_ENABLED
1675 sctp_auditing(4, inp, stcb, net);
1677 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1678 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1679 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1682 case SCTP_TIMER_TYPE_COOKIE:
1683 if ((stcb == NULL) || (inp == NULL)) {
1686 if (sctp_cookie_timer(inp, stcb, net)) {
1687 /* no need to unlock on tcb its gone */
1690 SCTP_STAT_INCR(sctps_timocookie);
1691 stcb->asoc.timocookie++;
1692 #ifdef SCTP_AUDITING_ENABLED
1693 sctp_auditing(4, inp, stcb, net);
1696 * We consider T3 and Cookie timer pretty much the same with
1697 * respect to where from in chunk_output.
1699 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1701 case SCTP_TIMER_TYPE_NEWCOOKIE:
1709 SCTP_STAT_INCR(sctps_timosecret);
1710 (void)SCTP_GETTIME_TIMEVAL(&tv);
1711 SCTP_INP_WLOCK(inp);
1712 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1713 inp->sctp_ep.last_secret_number =
1714 inp->sctp_ep.current_secret_number;
1715 inp->sctp_ep.current_secret_number++;
1716 if (inp->sctp_ep.current_secret_number >=
1717 SCTP_HOW_MANY_SECRETS) {
1718 inp->sctp_ep.current_secret_number = 0;
1720 secret = (int)inp->sctp_ep.current_secret_number;
1721 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1722 inp->sctp_ep.secret_key[secret][i] =
1723 sctp_select_initial_TSN(&inp->sctp_ep);
1725 SCTP_INP_WUNLOCK(inp);
1726 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1730 case SCTP_TIMER_TYPE_PATHMTURAISE:
1731 if ((stcb == NULL) || (inp == NULL)) {
1734 SCTP_STAT_INCR(sctps_timopathmtu);
1735 sctp_pathmtu_timer(inp, stcb, net);
1738 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1739 if ((stcb == NULL) || (inp == NULL)) {
1742 if (sctp_shutdownack_timer(inp, stcb, net)) {
1743 /* no need to unlock on tcb its gone */
1746 SCTP_STAT_INCR(sctps_timoshutdownack);
1747 stcb->asoc.timoshutdownack++;
1748 #ifdef SCTP_AUDITING_ENABLED
1749 sctp_auditing(4, inp, stcb, net);
1751 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1753 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1754 if ((stcb == NULL) || (inp == NULL)) {
1757 SCTP_STAT_INCR(sctps_timoshutdownguard);
1758 sctp_abort_an_association(inp, stcb, NULL, SCTP_SO_NOT_LOCKED);
1759 /* no need to unlock on tcb its gone */
1762 case SCTP_TIMER_TYPE_STRRESET:
1763 if ((stcb == NULL) || (inp == NULL)) {
1766 if (sctp_strreset_timer(inp, stcb, net)) {
1767 /* no need to unlock on tcb its gone */
1770 SCTP_STAT_INCR(sctps_timostrmrst);
1771 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1773 case SCTP_TIMER_TYPE_ASCONF:
1774 if ((stcb == NULL) || (inp == NULL)) {
1777 if (sctp_asconf_timer(inp, stcb, net)) {
1778 /* no need to unlock on tcb its gone */
1781 SCTP_STAT_INCR(sctps_timoasconf);
1782 #ifdef SCTP_AUDITING_ENABLED
1783 sctp_auditing(4, inp, stcb, net);
1785 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1787 case SCTP_TIMER_TYPE_PRIM_DELETED:
1788 if ((stcb == NULL) || (inp == NULL)) {
1791 sctp_delete_prim_timer(inp, stcb, net);
1792 SCTP_STAT_INCR(sctps_timodelprim);
1795 case SCTP_TIMER_TYPE_AUTOCLOSE:
1796 if ((stcb == NULL) || (inp == NULL)) {
1799 SCTP_STAT_INCR(sctps_timoautoclose);
1800 sctp_autoclose_timer(inp, stcb, net);
1801 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1804 case SCTP_TIMER_TYPE_ASOCKILL:
1805 if ((stcb == NULL) || (inp == NULL)) {
1808 SCTP_STAT_INCR(sctps_timoassockill);
1809 /* Can we free it yet? */
1810 SCTP_INP_DECR_REF(inp);
1811 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
1812 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1813 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1814 so = SCTP_INP_SO(inp);
1815 atomic_add_int(&stcb->asoc.refcnt, 1);
1816 SCTP_TCB_UNLOCK(stcb);
1817 SCTP_SOCKET_LOCK(so, 1);
1818 SCTP_TCB_LOCK(stcb);
1819 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1821 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
1822 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1823 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1824 SCTP_SOCKET_UNLOCK(so, 1);
1827 * free asoc, always unlocks (or destroy's) so prevent
1828 * duplicate unlock or unlock of a free mtx :-0
1832 case SCTP_TIMER_TYPE_INPKILL:
1833 SCTP_STAT_INCR(sctps_timoinpkill);
1838 * special case, take away our increment since WE are the
1841 SCTP_INP_DECR_REF(inp);
1842 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
1843 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1844 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1845 SCTP_CALLED_FROM_INPKILL_TIMER);
1849 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1853 #ifdef SCTP_AUDITING_ENABLED
1854 sctp_audit_log(0xF1, (uint8_t) tmr->type);
1856 sctp_auditing(5, inp, stcb, net);
1858 if ((did_output) && stcb) {
1860 * Now we need to clean up the control chunk chain if an
1861 * ECNE is on it. It must be marked as UNSENT again so next
1862 * call will continue to send it until such time that we get
1863 * a CWR, to remove it. It is, however, less likely that we
1864 * will find a ecn echo on the chain though.
1866 sctp_fix_ecn_echo(&stcb->asoc);
1870 SCTP_TCB_UNLOCK(stcb);
1874 SCTP_INP_DECR_REF(inp);
1877 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type %d)\n",
1883 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1884 struct sctp_nets *net)
1887 struct sctp_timer *tmr;
1889 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1894 SCTP_TCB_LOCK_ASSERT(stcb);
1897 case SCTP_TIMER_TYPE_ZERO_COPY:
1898 tmr = &inp->sctp_ep.zero_copy_timer;
1899 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1901 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1902 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1903 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1905 case SCTP_TIMER_TYPE_ADDR_WQ:
1906 /* Only 1 tick away :-) */
1907 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1908 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1910 case SCTP_TIMER_TYPE_SEND:
1911 /* Here we use the RTO timer */
1915 if ((stcb == NULL) || (net == NULL)) {
1918 tmr = &net->rxt_timer;
1919 if (net->RTO == 0) {
1920 rto_val = stcb->asoc.initial_rto;
1924 to_ticks = MSEC_TO_TICKS(rto_val);
1927 case SCTP_TIMER_TYPE_INIT:
1929 * Here we use the INIT timer default usually about 1
1932 if ((stcb == NULL) || (net == NULL)) {
1935 tmr = &net->rxt_timer;
1936 if (net->RTO == 0) {
1937 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1939 to_ticks = MSEC_TO_TICKS(net->RTO);
1942 case SCTP_TIMER_TYPE_RECV:
1944 * Here we use the Delayed-Ack timer value from the inp
1945 * ususually about 200ms.
1950 tmr = &stcb->asoc.dack_timer;
1951 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
1953 case SCTP_TIMER_TYPE_SHUTDOWN:
1954 /* Here we use the RTO of the destination. */
1955 if ((stcb == NULL) || (net == NULL)) {
1958 if (net->RTO == 0) {
1959 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1961 to_ticks = MSEC_TO_TICKS(net->RTO);
1963 tmr = &net->rxt_timer;
1965 case SCTP_TIMER_TYPE_HEARTBEAT:
1967 * the net is used here so that we can add in the RTO. Even
1968 * though we use a different timer. We also add the HB timer
1969 * PLUS a random jitter.
1971 if ((stcb == NULL) || (net == NULL)) {
1977 if ((net->dest_state & SCTP_ADDR_NOHB) &&
1978 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
1981 if (net->RTO == 0) {
1982 to_ticks = stcb->asoc.initial_rto;
1984 to_ticks = net->RTO;
1986 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
1987 jitter = rndval % to_ticks;
1988 if (jitter >= (to_ticks >> 1)) {
1989 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
1991 to_ticks = to_ticks - jitter;
1993 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
1994 !(net->dest_state & SCTP_ADDR_PF)) {
1995 to_ticks += net->heart_beat_delay;
1998 * Now we must convert the to_ticks that are now in
2001 to_ticks = MSEC_TO_TICKS(to_ticks);
2002 tmr = &net->hb_timer;
2005 case SCTP_TIMER_TYPE_COOKIE:
2007 * Here we can use the RTO timer from the network since one
2008 * RTT was compelete. If a retran happened then we will be
2009 * using the RTO initial value.
2011 if ((stcb == NULL) || (net == NULL)) {
2014 if (net->RTO == 0) {
2015 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2017 to_ticks = MSEC_TO_TICKS(net->RTO);
2019 tmr = &net->rxt_timer;
2021 case SCTP_TIMER_TYPE_NEWCOOKIE:
2023 * nothing needed but the endpoint here ususually about 60
2026 tmr = &inp->sctp_ep.signature_change;
2027 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2029 case SCTP_TIMER_TYPE_ASOCKILL:
2033 tmr = &stcb->asoc.strreset_timer;
2034 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2036 case SCTP_TIMER_TYPE_INPKILL:
2038 * The inp is setup to die. We re-use the signature_chage
2039 * timer since that has stopped and we are in the GONE
2042 tmr = &inp->sctp_ep.signature_change;
2043 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2045 case SCTP_TIMER_TYPE_PATHMTURAISE:
2047 * Here we use the value found in the EP for PMTU ususually
2050 if ((stcb == NULL) || (net == NULL)) {
2053 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2056 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2057 tmr = &net->pmtu_timer;
2059 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2060 /* Here we use the RTO of the destination */
2061 if ((stcb == NULL) || (net == NULL)) {
2064 if (net->RTO == 0) {
2065 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2067 to_ticks = MSEC_TO_TICKS(net->RTO);
2069 tmr = &net->rxt_timer;
2071 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2073 * Here we use the endpoints shutdown guard timer usually
2079 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2080 tmr = &stcb->asoc.shut_guard_timer;
2082 case SCTP_TIMER_TYPE_STRRESET:
2084 * Here the timer comes from the stcb but its value is from
2087 if ((stcb == NULL) || (net == NULL)) {
2090 if (net->RTO == 0) {
2091 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2093 to_ticks = MSEC_TO_TICKS(net->RTO);
2095 tmr = &stcb->asoc.strreset_timer;
2097 case SCTP_TIMER_TYPE_ASCONF:
2099 * Here the timer comes from the stcb but its value is from
2102 if ((stcb == NULL) || (net == NULL)) {
2105 if (net->RTO == 0) {
2106 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2108 to_ticks = MSEC_TO_TICKS(net->RTO);
2110 tmr = &stcb->asoc.asconf_timer;
2112 case SCTP_TIMER_TYPE_PRIM_DELETED:
2113 if ((stcb == NULL) || (net != NULL)) {
2116 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2117 tmr = &stcb->asoc.delete_prim_timer;
2119 case SCTP_TIMER_TYPE_AUTOCLOSE:
2123 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2125 * Really an error since stcb is NOT set to
2130 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2131 tmr = &stcb->asoc.autoclose_timer;
2134 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2135 __FUNCTION__, t_type);
2139 if ((to_ticks <= 0) || (tmr == NULL)) {
2140 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2141 __FUNCTION__, t_type, to_ticks, (void *)tmr);
2144 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2146 * we do NOT allow you to have it already running. if it is
2147 * we leave the current one up unchanged
2151 /* At this point we can proceed */
2152 if (t_type == SCTP_TIMER_TYPE_SEND) {
2153 stcb->asoc.num_send_timers_up++;
2155 tmr->stopped_from = 0;
2157 tmr->ep = (void *)inp;
2158 tmr->tcb = (void *)stcb;
2159 tmr->net = (void *)net;
2160 tmr->self = (void *)tmr;
2161 tmr->vnet = (void *)curvnet;
2162 tmr->ticks = sctp_get_tick_count();
2163 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2168 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2169 struct sctp_nets *net, uint32_t from)
2171 struct sctp_timer *tmr;
2173 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2179 SCTP_TCB_LOCK_ASSERT(stcb);
2182 case SCTP_TIMER_TYPE_ZERO_COPY:
2183 tmr = &inp->sctp_ep.zero_copy_timer;
2185 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2186 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2188 case SCTP_TIMER_TYPE_ADDR_WQ:
2189 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2191 case SCTP_TIMER_TYPE_SEND:
2192 if ((stcb == NULL) || (net == NULL)) {
2195 tmr = &net->rxt_timer;
2197 case SCTP_TIMER_TYPE_INIT:
2198 if ((stcb == NULL) || (net == NULL)) {
2201 tmr = &net->rxt_timer;
2203 case SCTP_TIMER_TYPE_RECV:
2207 tmr = &stcb->asoc.dack_timer;
2209 case SCTP_TIMER_TYPE_SHUTDOWN:
2210 if ((stcb == NULL) || (net == NULL)) {
2213 tmr = &net->rxt_timer;
2215 case SCTP_TIMER_TYPE_HEARTBEAT:
2216 if ((stcb == NULL) || (net == NULL)) {
2219 tmr = &net->hb_timer;
2221 case SCTP_TIMER_TYPE_COOKIE:
2222 if ((stcb == NULL) || (net == NULL)) {
2225 tmr = &net->rxt_timer;
2227 case SCTP_TIMER_TYPE_NEWCOOKIE:
2228 /* nothing needed but the endpoint here */
2229 tmr = &inp->sctp_ep.signature_change;
2231 * We re-use the newcookie timer for the INP kill timer. We
2232 * must assure that we do not kill it by accident.
2235 case SCTP_TIMER_TYPE_ASOCKILL:
2237 * Stop the asoc kill timer.
2242 tmr = &stcb->asoc.strreset_timer;
2245 case SCTP_TIMER_TYPE_INPKILL:
2247 * The inp is setup to die. We re-use the signature_chage
2248 * timer since that has stopped and we are in the GONE
2251 tmr = &inp->sctp_ep.signature_change;
2253 case SCTP_TIMER_TYPE_PATHMTURAISE:
2254 if ((stcb == NULL) || (net == NULL)) {
2257 tmr = &net->pmtu_timer;
2259 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2260 if ((stcb == NULL) || (net == NULL)) {
2263 tmr = &net->rxt_timer;
2265 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2269 tmr = &stcb->asoc.shut_guard_timer;
2271 case SCTP_TIMER_TYPE_STRRESET:
2275 tmr = &stcb->asoc.strreset_timer;
2277 case SCTP_TIMER_TYPE_ASCONF:
2281 tmr = &stcb->asoc.asconf_timer;
2283 case SCTP_TIMER_TYPE_PRIM_DELETED:
2287 tmr = &stcb->asoc.delete_prim_timer;
2289 case SCTP_TIMER_TYPE_AUTOCLOSE:
2293 tmr = &stcb->asoc.autoclose_timer;
2296 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2297 __FUNCTION__, t_type);
2303 if ((tmr->type != t_type) && tmr->type) {
2305 * Ok we have a timer that is under joint use. Cookie timer
2306 * per chance with the SEND timer. We therefore are NOT
2307 * running the timer that the caller wants stopped. So just
2312 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2313 stcb->asoc.num_send_timers_up--;
2314 if (stcb->asoc.num_send_timers_up < 0) {
2315 stcb->asoc.num_send_timers_up = 0;
2319 tmr->stopped_from = from;
2320 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2325 sctp_calculate_len(struct mbuf *m)
2332 tlen += SCTP_BUF_LEN(at);
2333 at = SCTP_BUF_NEXT(at);
2339 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2340 struct sctp_association *asoc, uint32_t mtu)
2343 * Reset the P-MTU size on this association, this involves changing
2344 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2345 * allow the DF flag to be cleared.
2347 struct sctp_tmit_chunk *chk;
2348 unsigned int eff_mtu, ovh;
2350 asoc->smallest_mtu = mtu;
2351 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2352 ovh = SCTP_MIN_OVERHEAD;
2354 ovh = SCTP_MIN_V4_OVERHEAD;
2356 eff_mtu = mtu - ovh;
2357 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2358 if (chk->send_size > eff_mtu) {
2359 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2362 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2363 if (chk->send_size > eff_mtu) {
2364 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2371 * given an association and starting time of the current RTT period return
2372 * RTO in number of msecs net should point to the current network
2376 sctp_calculate_rto(struct sctp_tcb *stcb,
2377 struct sctp_association *asoc,
2378 struct sctp_nets *net,
2379 struct timeval *told,
2380 int safe, int rtt_from_sack)
2383 * given an association and the starting time of the current RTT
2384 * period (in value1/value2) return RTO in number of msecs.
2386 int32_t rtt; /* RTT in ms */
2388 int first_measure = 0;
2389 struct timeval now, then, *old;
2391 /* Copy it out for sparc64 */
2392 if (safe == sctp_align_unsafe_makecopy) {
2394 memcpy(&then, told, sizeof(struct timeval));
2395 } else if (safe == sctp_align_safe_nocopy) {
2399 SCTP_PRINTF("Huh, bad rto calc call\n");
2402 /************************/
2403 /* 1. calculate new RTT */
2404 /************************/
2405 /* get the current time */
2406 if (stcb->asoc.use_precise_time) {
2407 (void)SCTP_GETPTIME_TIMEVAL(&now);
2409 (void)SCTP_GETTIME_TIMEVAL(&now);
2411 timevalsub(&now, old);
2412 /* store the current RTT in us */
2413 net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec +
2414 (uint64_t) now.tv_usec;
2416 /* compute rtt in ms */
2417 rtt = (int32_t) (net->rtt / 1000);
2418 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2420 * Tell the CC module that a new update has just occurred
2423 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2426 * Do we need to determine the lan? We do this only on sacks i.e.
2427 * RTT being determined from data not non-data (HB/INIT->INITACK).
2429 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2430 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2431 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2432 net->lan_type = SCTP_LAN_INTERNET;
2434 net->lan_type = SCTP_LAN_LOCAL;
2437 /***************************/
2438 /* 2. update RTTVAR & SRTT */
2439 /***************************/
2441 * Compute the scaled average lastsa and the
2442 * scaled variance lastsv as described in van Jacobson
2443 * Paper "Congestion Avoidance and Control", Annex A.
2445 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2446 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2448 if (net->RTO_measured) {
2449 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2454 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2456 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2457 rto_logging(net, SCTP_LOG_RTTVAR);
2460 /* First RTO measurment */
2461 net->RTO_measured = 1;
2463 net->lastsa = rtt << SCTP_RTT_SHIFT;
2464 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2465 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2466 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2469 if (net->lastsv == 0) {
2470 net->lastsv = SCTP_CLOCK_GRANULARITY;
2472 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2473 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2474 (stcb->asoc.sat_network_lockout == 0)) {
2475 stcb->asoc.sat_network = 1;
2476 } else if ((!first_measure) && stcb->asoc.sat_network) {
2477 stcb->asoc.sat_network = 0;
2478 stcb->asoc.sat_network_lockout = 1;
2480 /* bound it, per C6/C7 in Section 5.3.1 */
2481 if (new_rto < stcb->asoc.minrto) {
2482 new_rto = stcb->asoc.minrto;
2484 if (new_rto > stcb->asoc.maxrto) {
2485 new_rto = stcb->asoc.maxrto;
2487 /* we are now returning the RTO */
2492 * return a pointer to a contiguous piece of data from the given mbuf chain
2493 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2494 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2495 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2498 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
2504 if ((off < 0) || (len <= 0))
2507 /* find the desired start location */
2508 while ((m != NULL) && (off > 0)) {
2509 if (off < SCTP_BUF_LEN(m))
2511 off -= SCTP_BUF_LEN(m);
2512 m = SCTP_BUF_NEXT(m);
2517 /* is the current mbuf large enough (eg. contiguous)? */
2518 if ((SCTP_BUF_LEN(m) - off) >= len) {
2519 return (mtod(m, caddr_t)+off);
2521 /* else, it spans more than one mbuf, so save a temp copy... */
2522 while ((m != NULL) && (len > 0)) {
2523 count = min(SCTP_BUF_LEN(m) - off, len);
2524 bcopy(mtod(m, caddr_t)+off, ptr, count);
2528 m = SCTP_BUF_NEXT(m);
2530 if ((m == NULL) && (len > 0))
2533 return ((caddr_t)in_ptr);
2539 struct sctp_paramhdr *
2540 sctp_get_next_param(struct mbuf *m,
2542 struct sctp_paramhdr *pull,
2545 /* This just provides a typed signature to Peter's Pull routine */
2546 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2552 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2554 struct mbuf *m_last;
2560 if (padlen <= M_TRAILINGSPACE(m)) {
2562 * The easy way. We hope the majority of the time we hit
2567 /* Hard way we must grow the mbuf chain */
2568 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2569 if (m_last == NULL) {
2572 SCTP_BUF_LEN(m_last) = 0;
2573 SCTP_BUF_NEXT(m_last) = NULL;
2574 SCTP_BUF_NEXT(m) = m_last;
2576 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2577 SCTP_BUF_LEN(m_last) += padlen;
2578 memset(dp, 0, padlen);
2583 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2585 /* find the last mbuf in chain and pad it */
2588 if (last_mbuf != NULL) {
2589 return (sctp_add_pad_tombuf(last_mbuf, padval));
2591 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2592 if (SCTP_BUF_NEXT(m_at) == NULL) {
2593 return (sctp_add_pad_tombuf(m_at, padval));
2601 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2602 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2603 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2608 struct mbuf *m_notify;
2609 struct sctp_assoc_change *sac;
2610 struct sctp_queued_to_read *control;
2611 size_t notif_len, abort_len;
2614 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2619 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2620 notif_len = sizeof(struct sctp_assoc_change);
2621 if (abort != NULL) {
2622 abort_len = ntohs(abort->ch.chunk_length);
2626 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2627 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2628 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2629 notif_len += abort_len;
2631 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2632 if (m_notify == NULL) {
2633 /* Retry with smaller value. */
2634 notif_len = sizeof(struct sctp_assoc_change);
2635 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2636 if (m_notify == NULL) {
2640 SCTP_BUF_NEXT(m_notify) = NULL;
2641 sac = mtod(m_notify, struct sctp_assoc_change *);
2642 memset(sac, 0, notif_len);
2643 sac->sac_type = SCTP_ASSOC_CHANGE;
2645 sac->sac_length = sizeof(struct sctp_assoc_change);
2646 sac->sac_state = state;
2647 sac->sac_error = error;
2648 /* XXX verify these stream counts */
2649 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2650 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2651 sac->sac_assoc_id = sctp_get_associd(stcb);
2652 if (notif_len > sizeof(struct sctp_assoc_change)) {
2653 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2655 if (stcb->asoc.prsctp_supported == 1) {
2656 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2658 if (stcb->asoc.auth_supported == 1) {
2659 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2661 if (stcb->asoc.asconf_supported == 1) {
2662 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2664 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2665 if (stcb->asoc.reconfig_supported == 1) {
2666 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2668 sac->sac_length += i;
2669 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2670 memcpy(sac->sac_info, abort, abort_len);
2671 sac->sac_length += abort_len;
2674 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2675 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2676 0, 0, stcb->asoc.context, 0, 0, 0,
2678 if (control != NULL) {
2679 control->length = SCTP_BUF_LEN(m_notify);
2680 /* not that we need this */
2681 control->tail_mbuf = m_notify;
2682 control->spec_flags = M_NOTIFICATION;
2683 sctp_add_to_readq(stcb->sctp_ep, stcb,
2685 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2688 sctp_m_freem(m_notify);
2692 * For 1-to-1 style sockets, we send up and error when an ABORT
2696 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2697 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2698 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2699 SOCK_LOCK(stcb->sctp_socket);
2701 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2702 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2703 stcb->sctp_socket->so_error = ECONNREFUSED;
2705 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2706 stcb->sctp_socket->so_error = ECONNRESET;
2709 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2710 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2711 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2712 stcb->sctp_socket->so_error = ETIMEDOUT;
2714 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2715 stcb->sctp_socket->so_error = ECONNABORTED;
2719 /* Wake ANY sleepers */
2720 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2721 so = SCTP_INP_SO(stcb->sctp_ep);
2723 atomic_add_int(&stcb->asoc.refcnt, 1);
2724 SCTP_TCB_UNLOCK(stcb);
2725 SCTP_SOCKET_LOCK(so, 1);
2726 SCTP_TCB_LOCK(stcb);
2727 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2728 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2729 SCTP_SOCKET_UNLOCK(so, 1);
2734 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2735 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2736 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2737 socantrcvmore_locked(stcb->sctp_socket);
2739 sorwakeup(stcb->sctp_socket);
2740 sowwakeup(stcb->sctp_socket);
2741 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2743 SCTP_SOCKET_UNLOCK(so, 1);
2749 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2750 struct sockaddr *sa, uint32_t error, int so_locked
2751 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2756 struct mbuf *m_notify;
2757 struct sctp_paddr_change *spc;
2758 struct sctp_queued_to_read *control;
2760 if ((stcb == NULL) ||
2761 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2762 /* event not enabled */
2765 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2766 if (m_notify == NULL)
2768 SCTP_BUF_LEN(m_notify) = 0;
2769 spc = mtod(m_notify, struct sctp_paddr_change *);
2770 memset(spc, 0, sizeof(struct sctp_paddr_change));
2771 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2773 spc->spc_length = sizeof(struct sctp_paddr_change);
2774 switch (sa->sa_family) {
2778 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
2779 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
2780 (struct sockaddr_in6 *)&spc->spc_aaddr);
2782 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2785 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2792 struct sockaddr_in6 *sin6;
2794 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2796 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2797 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2798 if (sin6->sin6_scope_id == 0) {
2799 /* recover scope_id for user */
2800 (void)sa6_recoverscope(sin6);
2802 /* clear embedded scope_id for user */
2803 in6_clearscope(&sin6->sin6_addr);
2813 spc->spc_state = state;
2814 spc->spc_error = error;
2815 spc->spc_assoc_id = sctp_get_associd(stcb);
2817 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2818 SCTP_BUF_NEXT(m_notify) = NULL;
2820 /* append to socket */
2821 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2822 0, 0, stcb->asoc.context, 0, 0, 0,
2824 if (control == NULL) {
2826 sctp_m_freem(m_notify);
2829 control->length = SCTP_BUF_LEN(m_notify);
2830 control->spec_flags = M_NOTIFICATION;
2831 /* not that we need this */
2832 control->tail_mbuf = m_notify;
2833 sctp_add_to_readq(stcb->sctp_ep, stcb,
2835 &stcb->sctp_socket->so_rcv, 1,
2836 SCTP_READ_LOCK_NOT_HELD,
2842 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2843 struct sctp_tmit_chunk *chk, int so_locked
2844 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2849 struct mbuf *m_notify;
2850 struct sctp_send_failed *ssf;
2851 struct sctp_send_failed_event *ssfe;
2852 struct sctp_queued_to_read *control;
2855 if ((stcb == NULL) ||
2856 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2857 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2858 /* event not enabled */
2861 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2862 length = sizeof(struct sctp_send_failed_event);
2864 length = sizeof(struct sctp_send_failed);
2866 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2867 if (m_notify == NULL)
2870 SCTP_BUF_LEN(m_notify) = 0;
2871 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2872 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2873 memset(ssfe, 0, length);
2874 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2876 ssfe->ssfe_flags = SCTP_DATA_SENT;
2878 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2880 length += chk->send_size;
2881 length -= sizeof(struct sctp_data_chunk);
2882 ssfe->ssfe_length = length;
2883 ssfe->ssfe_error = error;
2884 /* not exactly what the user sent in, but should be close :) */
2885 ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number;
2886 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2887 ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype;
2888 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2889 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2890 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2891 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2893 ssf = mtod(m_notify, struct sctp_send_failed *);
2894 memset(ssf, 0, length);
2895 ssf->ssf_type = SCTP_SEND_FAILED;
2897 ssf->ssf_flags = SCTP_DATA_SENT;
2899 ssf->ssf_flags = SCTP_DATA_UNSENT;
2901 length += chk->send_size;
2902 length -= sizeof(struct sctp_data_chunk);
2903 ssf->ssf_length = length;
2904 ssf->ssf_error = error;
2905 /* not exactly what the user sent in, but should be close :) */
2906 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2907 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2908 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2909 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2910 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2911 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2912 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2913 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2914 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2918 * trim off the sctp chunk header(it should be there)
2920 if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
2921 m_adj(chk->data, sizeof(struct sctp_data_chunk));
2922 sctp_mbuf_crush(chk->data);
2923 chk->send_size -= sizeof(struct sctp_data_chunk);
2926 SCTP_BUF_NEXT(m_notify) = chk->data;
2927 /* Steal off the mbuf */
2930 * For this case, we check the actual socket buffer, since the assoc
2931 * is going away we don't want to overfill the socket buffer for a
2934 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
2935 sctp_m_freem(m_notify);
2938 /* append to socket */
2939 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2940 0, 0, stcb->asoc.context, 0, 0, 0,
2942 if (control == NULL) {
2944 sctp_m_freem(m_notify);
2947 control->spec_flags = M_NOTIFICATION;
2948 sctp_add_to_readq(stcb->sctp_ep, stcb,
2950 &stcb->sctp_socket->so_rcv, 1,
2951 SCTP_READ_LOCK_NOT_HELD,
2957 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
2958 struct sctp_stream_queue_pending *sp, int so_locked
2959 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2964 struct mbuf *m_notify;
2965 struct sctp_send_failed *ssf;
2966 struct sctp_send_failed_event *ssfe;
2967 struct sctp_queued_to_read *control;
2970 if ((stcb == NULL) ||
2971 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2972 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2973 /* event not enabled */
2976 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2977 length = sizeof(struct sctp_send_failed_event);
2979 length = sizeof(struct sctp_send_failed);
2981 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2982 if (m_notify == NULL) {
2986 SCTP_BUF_LEN(m_notify) = 0;
2987 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2988 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2989 memset(ssfe, 0, length);
2990 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2991 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2992 length += sp->length;
2993 ssfe->ssfe_length = length;
2994 ssfe->ssfe_error = error;
2995 /* not exactly what the user sent in, but should be close :) */
2996 ssfe->ssfe_info.snd_sid = sp->stream;
2997 if (sp->some_taken) {
2998 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3000 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3002 ssfe->ssfe_info.snd_ppid = sp->ppid;
3003 ssfe->ssfe_info.snd_context = sp->context;
3004 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3005 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3006 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
3008 ssf = mtod(m_notify, struct sctp_send_failed *);
3009 memset(ssf, 0, length);
3010 ssf->ssf_type = SCTP_SEND_FAILED;
3011 ssf->ssf_flags = SCTP_DATA_UNSENT;
3012 length += sp->length;
3013 ssf->ssf_length = length;
3014 ssf->ssf_error = error;
3015 /* not exactly what the user sent in, but should be close :) */
3016 ssf->ssf_info.sinfo_stream = sp->stream;
3017 ssf->ssf_info.sinfo_ssn = 0;
3018 if (sp->some_taken) {
3019 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3021 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3023 ssf->ssf_info.sinfo_ppid = sp->ppid;
3024 ssf->ssf_info.sinfo_context = sp->context;
3025 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3026 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3027 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
3029 SCTP_BUF_NEXT(m_notify) = sp->data;
3031 /* Steal off the mbuf */
3034 * For this case, we check the actual socket buffer, since the assoc
3035 * is going away we don't want to overfill the socket buffer for a
3038 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3039 sctp_m_freem(m_notify);
3042 /* append to socket */
3043 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3044 0, 0, stcb->asoc.context, 0, 0, 0,
3046 if (control == NULL) {
3048 sctp_m_freem(m_notify);
3051 control->spec_flags = M_NOTIFICATION;
3052 sctp_add_to_readq(stcb->sctp_ep, stcb,
3054 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3060 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3062 struct mbuf *m_notify;
3063 struct sctp_adaptation_event *sai;
3064 struct sctp_queued_to_read *control;
3066 if ((stcb == NULL) ||
3067 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3068 /* event not enabled */
3071 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3072 if (m_notify == NULL)
3075 SCTP_BUF_LEN(m_notify) = 0;
3076 sai = mtod(m_notify, struct sctp_adaptation_event *);
3077 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3078 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3080 sai->sai_length = sizeof(struct sctp_adaptation_event);
3081 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3082 sai->sai_assoc_id = sctp_get_associd(stcb);
3084 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3085 SCTP_BUF_NEXT(m_notify) = NULL;
3087 /* append to socket */
3088 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3089 0, 0, stcb->asoc.context, 0, 0, 0,
3091 if (control == NULL) {
3093 sctp_m_freem(m_notify);
3096 control->length = SCTP_BUF_LEN(m_notify);
3097 control->spec_flags = M_NOTIFICATION;
3098 /* not that we need this */
3099 control->tail_mbuf = m_notify;
3100 sctp_add_to_readq(stcb->sctp_ep, stcb,
3102 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3105 /* This always must be called with the read-queue LOCKED in the INP */
3107 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3108 uint32_t val, int so_locked
3109 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3114 struct mbuf *m_notify;
3115 struct sctp_pdapi_event *pdapi;
3116 struct sctp_queued_to_read *control;
3119 if ((stcb == NULL) ||
3120 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3121 /* event not enabled */
3124 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3127 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3128 if (m_notify == NULL)
3131 SCTP_BUF_LEN(m_notify) = 0;
3132 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3133 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3134 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3135 pdapi->pdapi_flags = 0;
3136 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3137 pdapi->pdapi_indication = error;
3138 pdapi->pdapi_stream = (val >> 16);
3139 pdapi->pdapi_seq = (val & 0x0000ffff);
3140 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3142 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3143 SCTP_BUF_NEXT(m_notify) = NULL;
3144 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3145 0, 0, stcb->asoc.context, 0, 0, 0,
3147 if (control == NULL) {
3149 sctp_m_freem(m_notify);
3152 control->spec_flags = M_NOTIFICATION;
3153 control->length = SCTP_BUF_LEN(m_notify);
3154 /* not that we need this */
3155 control->tail_mbuf = m_notify;
3156 control->held_length = 0;
3157 control->length = 0;
3158 sb = &stcb->sctp_socket->so_rcv;
3159 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3160 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3162 sctp_sballoc(stcb, sb, m_notify);
3163 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3164 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3166 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3167 control->end_added = 1;
3168 if (stcb->asoc.control_pdapi)
3169 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3171 /* we really should not see this case */
3172 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3174 if (stcb->sctp_ep && stcb->sctp_socket) {
3175 /* This should always be the case */
3176 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3179 so = SCTP_INP_SO(stcb->sctp_ep);
3181 atomic_add_int(&stcb->asoc.refcnt, 1);
3182 SCTP_TCB_UNLOCK(stcb);
3183 SCTP_SOCKET_LOCK(so, 1);
3184 SCTP_TCB_LOCK(stcb);
3185 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3186 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3187 SCTP_SOCKET_UNLOCK(so, 1);
3192 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3193 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3195 SCTP_SOCKET_UNLOCK(so, 1);
3202 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3204 struct mbuf *m_notify;
3205 struct sctp_shutdown_event *sse;
3206 struct sctp_queued_to_read *control;
3209 * For TCP model AND UDP connected sockets we will send an error up
3210 * when an SHUTDOWN completes
3212 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3213 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3214 /* mark socket closed for read/write and wakeup! */
3215 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3218 so = SCTP_INP_SO(stcb->sctp_ep);
3219 atomic_add_int(&stcb->asoc.refcnt, 1);
3220 SCTP_TCB_UNLOCK(stcb);
3221 SCTP_SOCKET_LOCK(so, 1);
3222 SCTP_TCB_LOCK(stcb);
3223 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3224 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3225 SCTP_SOCKET_UNLOCK(so, 1);
3229 socantsendmore(stcb->sctp_socket);
3230 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3231 SCTP_SOCKET_UNLOCK(so, 1);
3234 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3235 /* event not enabled */
3238 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3239 if (m_notify == NULL)
3242 sse = mtod(m_notify, struct sctp_shutdown_event *);
3243 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3244 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3246 sse->sse_length = sizeof(struct sctp_shutdown_event);
3247 sse->sse_assoc_id = sctp_get_associd(stcb);
3249 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3250 SCTP_BUF_NEXT(m_notify) = NULL;
3252 /* append to socket */
3253 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3254 0, 0, stcb->asoc.context, 0, 0, 0,
3256 if (control == NULL) {
3258 sctp_m_freem(m_notify);
3261 control->spec_flags = M_NOTIFICATION;
3262 control->length = SCTP_BUF_LEN(m_notify);
3263 /* not that we need this */
3264 control->tail_mbuf = m_notify;
3265 sctp_add_to_readq(stcb->sctp_ep, stcb,
3267 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3271 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3273 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3278 struct mbuf *m_notify;
3279 struct sctp_sender_dry_event *event;
3280 struct sctp_queued_to_read *control;
3282 if ((stcb == NULL) ||
3283 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3284 /* event not enabled */
3287 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3288 if (m_notify == NULL) {
3292 SCTP_BUF_LEN(m_notify) = 0;
3293 event = mtod(m_notify, struct sctp_sender_dry_event *);
3294 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3295 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3296 event->sender_dry_flags = 0;
3297 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3298 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3300 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3301 SCTP_BUF_NEXT(m_notify) = NULL;
3303 /* append to socket */
3304 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3305 0, 0, stcb->asoc.context, 0, 0, 0,
3307 if (control == NULL) {
3309 sctp_m_freem(m_notify);
3312 control->length = SCTP_BUF_LEN(m_notify);
3313 control->spec_flags = M_NOTIFICATION;
3314 /* not that we need this */
3315 control->tail_mbuf = m_notify;
3316 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3317 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3322 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3324 struct mbuf *m_notify;
3325 struct sctp_queued_to_read *control;
3326 struct sctp_stream_change_event *stradd;
3328 if ((stcb == NULL) ||
3329 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3330 /* event not enabled */
3333 if ((stcb->asoc.peer_req_out) && flag) {
3334 /* Peer made the request, don't tell the local user */
3335 stcb->asoc.peer_req_out = 0;
3338 stcb->asoc.peer_req_out = 0;
3339 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3340 if (m_notify == NULL)
3343 SCTP_BUF_LEN(m_notify) = 0;
3344 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3345 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3346 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3347 stradd->strchange_flags = flag;
3348 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3349 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3350 stradd->strchange_instrms = numberin;
3351 stradd->strchange_outstrms = numberout;
3352 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3353 SCTP_BUF_NEXT(m_notify) = NULL;
3354 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3356 sctp_m_freem(m_notify);
3359 /* append to socket */
3360 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3361 0, 0, stcb->asoc.context, 0, 0, 0,
3363 if (control == NULL) {
3365 sctp_m_freem(m_notify);
3368 control->spec_flags = M_NOTIFICATION;
3369 control->length = SCTP_BUF_LEN(m_notify);
3370 /* not that we need this */
3371 control->tail_mbuf = m_notify;
3372 sctp_add_to_readq(stcb->sctp_ep, stcb,
3374 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3378 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3380 struct mbuf *m_notify;
3381 struct sctp_queued_to_read *control;
3382 struct sctp_assoc_reset_event *strasoc;
3384 if ((stcb == NULL) ||
3385 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3386 /* event not enabled */
3389 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3390 if (m_notify == NULL)
3393 SCTP_BUF_LEN(m_notify) = 0;
3394 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3395 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3396 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3397 strasoc->assocreset_flags = flag;
3398 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3399 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3400 strasoc->assocreset_local_tsn = sending_tsn;
3401 strasoc->assocreset_remote_tsn = recv_tsn;
3402 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3403 SCTP_BUF_NEXT(m_notify) = NULL;
3404 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3406 sctp_m_freem(m_notify);
3409 /* append to socket */
3410 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3411 0, 0, stcb->asoc.context, 0, 0, 0,
3413 if (control == NULL) {
3415 sctp_m_freem(m_notify);
3418 control->spec_flags = M_NOTIFICATION;
3419 control->length = SCTP_BUF_LEN(m_notify);
3420 /* not that we need this */
3421 control->tail_mbuf = m_notify;
3422 sctp_add_to_readq(stcb->sctp_ep, stcb,
3424 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3430 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3431 int number_entries, uint16_t * list, int flag)
3433 struct mbuf *m_notify;
3434 struct sctp_queued_to_read *control;
3435 struct sctp_stream_reset_event *strreset;
3438 if ((stcb == NULL) ||
3439 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3440 /* event not enabled */
3443 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3444 if (m_notify == NULL)
3447 SCTP_BUF_LEN(m_notify) = 0;
3448 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3449 if (len > M_TRAILINGSPACE(m_notify)) {
3450 /* never enough room */
3451 sctp_m_freem(m_notify);
3454 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3455 memset(strreset, 0, len);
3456 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3457 strreset->strreset_flags = flag;
3458 strreset->strreset_length = len;
3459 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3460 if (number_entries) {
3463 for (i = 0; i < number_entries; i++) {
3464 strreset->strreset_stream_list[i] = ntohs(list[i]);
3467 SCTP_BUF_LEN(m_notify) = len;
3468 SCTP_BUF_NEXT(m_notify) = NULL;
3469 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3471 sctp_m_freem(m_notify);
3474 /* append to socket */
3475 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3476 0, 0, stcb->asoc.context, 0, 0, 0,
3478 if (control == NULL) {
3480 sctp_m_freem(m_notify);
3483 control->spec_flags = M_NOTIFICATION;
3484 control->length = SCTP_BUF_LEN(m_notify);
3485 /* not that we need this */
3486 control->tail_mbuf = m_notify;
3487 sctp_add_to_readq(stcb->sctp_ep, stcb,
3489 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3494 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3496 struct mbuf *m_notify;
3497 struct sctp_remote_error *sre;
3498 struct sctp_queued_to_read *control;
3499 size_t notif_len, chunk_len;
3501 if ((stcb == NULL) ||
3502 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3505 if (chunk != NULL) {
3506 chunk_len = ntohs(chunk->ch.chunk_length);
3510 notif_len = sizeof(struct sctp_remote_error) + chunk_len;
3511 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3512 if (m_notify == NULL) {
3513 /* Retry with smaller value. */
3514 notif_len = sizeof(struct sctp_remote_error);
3515 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3516 if (m_notify == NULL) {
3520 SCTP_BUF_NEXT(m_notify) = NULL;
3521 sre = mtod(m_notify, struct sctp_remote_error *);
3522 memset(sre, 0, notif_len);
3523 sre->sre_type = SCTP_REMOTE_ERROR;
3525 sre->sre_length = sizeof(struct sctp_remote_error);
3526 sre->sre_error = error;
3527 sre->sre_assoc_id = sctp_get_associd(stcb);
3528 if (notif_len > sizeof(struct sctp_remote_error)) {
3529 memcpy(sre->sre_data, chunk, chunk_len);
3530 sre->sre_length += chunk_len;
3532 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3533 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3534 0, 0, stcb->asoc.context, 0, 0, 0,
3536 if (control != NULL) {
3537 control->length = SCTP_BUF_LEN(m_notify);
3538 /* not that we need this */
3539 control->tail_mbuf = m_notify;
3540 control->spec_flags = M_NOTIFICATION;
3541 sctp_add_to_readq(stcb->sctp_ep, stcb,
3543 &stcb->sctp_socket->so_rcv, 1,
3544 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3546 sctp_m_freem(m_notify);
3552 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3553 uint32_t error, void *data, int so_locked
3554 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3559 if ((stcb == NULL) ||
3560 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3561 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3562 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3563 /* If the socket is gone we are out of here */
3566 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3569 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3570 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3571 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3572 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3573 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3574 /* Don't report these in front states */
3578 switch (notification) {
3579 case SCTP_NOTIFY_ASSOC_UP:
3580 if (stcb->asoc.assoc_up_sent == 0) {
3581 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3582 stcb->asoc.assoc_up_sent = 1;
3584 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3585 sctp_notify_adaptation_layer(stcb);
3587 if (stcb->asoc.auth_supported == 0) {
3588 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3592 case SCTP_NOTIFY_ASSOC_DOWN:
3593 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3595 case SCTP_NOTIFY_INTERFACE_DOWN:
3597 struct sctp_nets *net;
3599 net = (struct sctp_nets *)data;
3600 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3601 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3604 case SCTP_NOTIFY_INTERFACE_UP:
3606 struct sctp_nets *net;
3608 net = (struct sctp_nets *)data;
3609 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3610 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3613 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3615 struct sctp_nets *net;
3617 net = (struct sctp_nets *)data;
3618 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3619 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3622 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3623 sctp_notify_send_failed2(stcb, error,
3624 (struct sctp_stream_queue_pending *)data, so_locked);
3626 case SCTP_NOTIFY_SENT_DG_FAIL:
3627 sctp_notify_send_failed(stcb, 1, error,
3628 (struct sctp_tmit_chunk *)data, so_locked);
3630 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3631 sctp_notify_send_failed(stcb, 0, error,
3632 (struct sctp_tmit_chunk *)data, so_locked);
3634 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3638 val = *((uint32_t *) data);
3640 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3643 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3644 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3645 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3646 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3648 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3651 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3652 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3653 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3654 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3656 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3659 case SCTP_NOTIFY_ASSOC_RESTART:
3660 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3661 if (stcb->asoc.auth_supported == 0) {
3662 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3666 case SCTP_NOTIFY_STR_RESET_SEND:
3667 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN);
3669 case SCTP_NOTIFY_STR_RESET_RECV:
3670 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING);
3672 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3673 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3674 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3676 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3677 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3678 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3680 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3681 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3682 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3684 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3685 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3686 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3688 case SCTP_NOTIFY_ASCONF_ADD_IP:
3689 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3692 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3693 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3696 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3697 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3700 case SCTP_NOTIFY_PEER_SHUTDOWN:
3701 sctp_notify_shutdown_event(stcb);
3703 case SCTP_NOTIFY_AUTH_NEW_KEY:
3704 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3705 (uint16_t) (uintptr_t) data,
3708 case SCTP_NOTIFY_AUTH_FREE_KEY:
3709 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3710 (uint16_t) (uintptr_t) data,
3713 case SCTP_NOTIFY_NO_PEER_AUTH:
3714 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3715 (uint16_t) (uintptr_t) data,
3718 case SCTP_NOTIFY_SENDER_DRY:
3719 sctp_notify_sender_dry_event(stcb, so_locked);
3721 case SCTP_NOTIFY_REMOTE_ERROR:
3722 sctp_notify_remote_error(stcb, error, data);
3725 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3726 __FUNCTION__, notification, notification);
3732 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3733 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3738 struct sctp_association *asoc;
3739 struct sctp_stream_out *outs;
3740 struct sctp_tmit_chunk *chk, *nchk;
3741 struct sctp_stream_queue_pending *sp, *nsp;
3748 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3749 /* already being freed */
3752 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3753 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3754 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3757 /* now through all the gunk freeing chunks */
3758 if (holds_lock == 0) {
3759 SCTP_TCB_SEND_LOCK(stcb);
3761 /* sent queue SHOULD be empty */
3762 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3763 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3764 asoc->sent_queue_cnt--;
3765 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3766 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3767 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3770 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3774 if (chk->data != NULL) {
3775 sctp_free_bufspace(stcb, asoc, chk, 1);
3776 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3777 error, chk, so_locked);
3779 sctp_m_freem(chk->data);
3783 sctp_free_a_chunk(stcb, chk, so_locked);
3784 /* sa_ignore FREED_MEMORY */
3786 /* pending send queue SHOULD be empty */
3787 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3788 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3789 asoc->send_queue_cnt--;
3790 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3791 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3794 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3797 if (chk->data != NULL) {
3798 sctp_free_bufspace(stcb, asoc, chk, 1);
3799 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3800 error, chk, so_locked);
3802 sctp_m_freem(chk->data);
3806 sctp_free_a_chunk(stcb, chk, so_locked);
3807 /* sa_ignore FREED_MEMORY */
3809 for (i = 0; i < asoc->streamoutcnt; i++) {
3810 /* For each stream */
3811 outs = &asoc->strmout[i];
3812 /* clean up any sends there */
3813 asoc->locked_on_sending = NULL;
3814 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3815 asoc->stream_queue_cnt--;
3816 TAILQ_REMOVE(&outs->outqueue, sp, next);
3817 sctp_free_spbufspace(stcb, asoc, sp);
3819 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3820 error, (void *)sp, so_locked);
3822 sctp_m_freem(sp->data);
3824 sp->tail_mbuf = NULL;
3829 sctp_free_remote_addr(sp->net);
3832 /* Free the chunk */
3833 sctp_free_a_strmoq(stcb, sp, so_locked);
3834 /* sa_ignore FREED_MEMORY */
3838 if (holds_lock == 0) {
3839 SCTP_TCB_SEND_UNLOCK(stcb);
3844 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3845 struct sctp_abort_chunk *abort, int so_locked
3846 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3854 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3855 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3856 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3857 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3859 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3860 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3861 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3864 /* Tell them we lost the asoc */
3865 sctp_report_all_outbound(stcb, error, 1, so_locked);
3867 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3869 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3874 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3875 struct mbuf *m, int iphlen,
3876 struct sockaddr *src, struct sockaddr *dst,
3877 struct sctphdr *sh, struct mbuf *op_err,
3878 uint8_t mflowtype, uint32_t mflowid,
3879 uint32_t vrf_id, uint16_t port)
3883 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3890 /* We have a TCB to abort, send notification too */
3891 vtag = stcb->asoc.peer_vtag;
3892 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3893 /* get the assoc vrf id and table id */
3894 vrf_id = stcb->asoc.vrf_id;
3895 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3897 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3898 mflowtype, mflowid, inp->fibnum,
3901 /* Ok, now lets free it */
3902 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3903 so = SCTP_INP_SO(inp);
3904 atomic_add_int(&stcb->asoc.refcnt, 1);
3905 SCTP_TCB_UNLOCK(stcb);
3906 SCTP_SOCKET_LOCK(so, 1);
3907 SCTP_TCB_LOCK(stcb);
3908 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3910 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3911 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3912 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3913 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3915 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
3916 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
3917 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3918 SCTP_SOCKET_UNLOCK(so, 1);
3923 #ifdef SCTP_ASOCLOG_OF_TSNS
3925 sctp_print_out_track_log(struct sctp_tcb *stcb)
3930 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
3931 SCTP_PRINTF("IN bound TSN log-aaa\n");
3932 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
3933 SCTP_PRINTF("None rcvd\n");
3936 if (stcb->asoc.tsn_in_wrapped) {
3937 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
3938 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3939 stcb->asoc.in_tsnlog[i].tsn,
3940 stcb->asoc.in_tsnlog[i].strm,
3941 stcb->asoc.in_tsnlog[i].seq,
3942 stcb->asoc.in_tsnlog[i].flgs,
3943 stcb->asoc.in_tsnlog[i].sz);
3946 if (stcb->asoc.tsn_in_at) {
3947 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
3948 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3949 stcb->asoc.in_tsnlog[i].tsn,
3950 stcb->asoc.in_tsnlog[i].strm,
3951 stcb->asoc.in_tsnlog[i].seq,
3952 stcb->asoc.in_tsnlog[i].flgs,
3953 stcb->asoc.in_tsnlog[i].sz);
3957 SCTP_PRINTF("OUT bound TSN log-aaa\n");
3958 if ((stcb->asoc.tsn_out_at == 0) &&
3959 (stcb->asoc.tsn_out_wrapped == 0)) {
3960 SCTP_PRINTF("None sent\n");
3962 if (stcb->asoc.tsn_out_wrapped) {
3963 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
3964 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3965 stcb->asoc.out_tsnlog[i].tsn,
3966 stcb->asoc.out_tsnlog[i].strm,
3967 stcb->asoc.out_tsnlog[i].seq,
3968 stcb->asoc.out_tsnlog[i].flgs,
3969 stcb->asoc.out_tsnlog[i].sz);
3972 if (stcb->asoc.tsn_out_at) {
3973 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
3974 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3975 stcb->asoc.out_tsnlog[i].tsn,
3976 stcb->asoc.out_tsnlog[i].strm,
3977 stcb->asoc.out_tsnlog[i].seq,
3978 stcb->asoc.out_tsnlog[i].flgs,
3979 stcb->asoc.out_tsnlog[i].sz);
3988 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3989 struct mbuf *op_err,
3991 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3996 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4001 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4002 so = SCTP_INP_SO(inp);
4005 /* Got to have a TCB */
4006 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4007 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4008 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4009 SCTP_CALLED_DIRECTLY_NOCMPSET);
4014 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
4016 /* notify the ulp */
4017 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4018 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4020 /* notify the peer */
4021 sctp_send_abort_tcb(stcb, op_err, so_locked);
4022 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4023 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
4024 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4025 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4027 /* now free the asoc */
4028 #ifdef SCTP_ASOCLOG_OF_TSNS
4029 sctp_print_out_track_log(stcb);
4031 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4033 atomic_add_int(&stcb->asoc.refcnt, 1);
4034 SCTP_TCB_UNLOCK(stcb);
4035 SCTP_SOCKET_LOCK(so, 1);
4036 SCTP_TCB_LOCK(stcb);
4037 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4040 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4041 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4042 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4044 SCTP_SOCKET_UNLOCK(so, 1);
4050 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4051 struct sockaddr *src, struct sockaddr *dst,
4052 struct sctphdr *sh, struct sctp_inpcb *inp,
4054 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4055 uint32_t vrf_id, uint16_t port)
4057 struct sctp_chunkhdr *ch, chunk_buf;
4058 unsigned int chk_length;
4059 int contains_init_chunk;
4061 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4062 /* Generate a TO address for future reference */
4063 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4064 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4065 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4066 SCTP_CALLED_DIRECTLY_NOCMPSET);
4069 contains_init_chunk = 0;
4070 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4071 sizeof(*ch), (uint8_t *) & chunk_buf);
4072 while (ch != NULL) {
4073 chk_length = ntohs(ch->chunk_length);
4074 if (chk_length < sizeof(*ch)) {
4075 /* break to abort land */
4078 switch (ch->chunk_type) {
4080 contains_init_chunk = 1;
4082 case SCTP_PACKET_DROPPED:
4083 /* we don't respond to pkt-dropped */
4085 case SCTP_ABORT_ASSOCIATION:
4086 /* we don't respond with an ABORT to an ABORT */
4088 case SCTP_SHUTDOWN_COMPLETE:
4090 * we ignore it since we are not waiting for it and
4094 case SCTP_SHUTDOWN_ACK:
4095 sctp_send_shutdown_complete2(src, dst, sh,
4096 mflowtype, mflowid, fibnum,
4102 offset += SCTP_SIZE32(chk_length);
4103 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4104 sizeof(*ch), (uint8_t *) & chunk_buf);
4106 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4107 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4108 (contains_init_chunk == 0))) {
4109 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4110 mflowtype, mflowid, fibnum,
4116 * check the inbound datagram to make sure there is not an abort inside it,
4117 * if there is return 1, else return 0.
4120 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
4122 struct sctp_chunkhdr *ch;
4123 struct sctp_init_chunk *init_chk, chunk_buf;
4125 unsigned int chk_length;
4127 offset = iphlen + sizeof(struct sctphdr);
4128 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4129 (uint8_t *) & chunk_buf);
4130 while (ch != NULL) {
4131 chk_length = ntohs(ch->chunk_length);
4132 if (chk_length < sizeof(*ch)) {
4133 /* packet is probably corrupt */
4136 /* we seem to be ok, is it an abort? */
4137 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4138 /* yep, tell them */
4141 if (ch->chunk_type == SCTP_INITIATION) {
4142 /* need to update the Vtag */
4143 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4144 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
4145 if (init_chk != NULL) {
4146 *vtagfill = ntohl(init_chk->init.initiate_tag);
4149 /* Nope, move to the next chunk */
4150 offset += SCTP_SIZE32(chk_length);
4151 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4152 sizeof(*ch), (uint8_t *) & chunk_buf);
4158 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4159 * set (i.e. it's 0) so, create this function to compare link local scopes
4163 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4165 struct sockaddr_in6 a, b;
4171 if (a.sin6_scope_id == 0)
4172 if (sa6_recoverscope(&a)) {
4173 /* can't get scope, so can't match */
4176 if (b.sin6_scope_id == 0)
4177 if (sa6_recoverscope(&b)) {
4178 /* can't get scope, so can't match */
4181 if (a.sin6_scope_id != b.sin6_scope_id)
4188 * returns a sockaddr_in6 with embedded scope recovered and removed
4190 struct sockaddr_in6 *
4191 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4193 /* check and strip embedded scope junk */
4194 if (addr->sin6_family == AF_INET6) {
4195 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4196 if (addr->sin6_scope_id == 0) {
4198 if (!sa6_recoverscope(store)) {
4199 /* use the recovered scope */
4203 /* else, return the original "to" addr */
4204 in6_clearscope(&addr->sin6_addr);
4214 * are the two addresses the same? currently a "scopeless" check returns: 1
4218 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4222 if (sa1 == NULL || sa2 == NULL)
4225 /* must be the same family */
4226 if (sa1->sa_family != sa2->sa_family)
4229 switch (sa1->sa_family) {
4233 /* IPv6 addresses */
4234 struct sockaddr_in6 *sin6_1, *sin6_2;
4236 sin6_1 = (struct sockaddr_in6 *)sa1;
4237 sin6_2 = (struct sockaddr_in6 *)sa2;
4238 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4245 /* IPv4 addresses */
4246 struct sockaddr_in *sin_1, *sin_2;
4248 sin_1 = (struct sockaddr_in *)sa1;
4249 sin_2 = (struct sockaddr_in *)sa2;
4250 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4254 /* we don't do these... */
4260 sctp_print_address(struct sockaddr *sa)
4263 char ip6buf[INET6_ADDRSTRLEN];
4267 switch (sa->sa_family) {
4271 struct sockaddr_in6 *sin6;
4273 sin6 = (struct sockaddr_in6 *)sa;
4274 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4275 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4276 ntohs(sin6->sin6_port),
4277 sin6->sin6_scope_id);
4284 struct sockaddr_in *sin;
4287 sin = (struct sockaddr_in *)sa;
4288 p = (unsigned char *)&sin->sin_addr;
4289 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4290 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4301 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4302 struct sctp_inpcb *new_inp,
4303 struct sctp_tcb *stcb,
4307 * go through our old INP and pull off any control structures that
4308 * belong to stcb and move then to the new inp.
4310 struct socket *old_so, *new_so;
4311 struct sctp_queued_to_read *control, *nctl;
4312 struct sctp_readhead tmp_queue;
4316 old_so = old_inp->sctp_socket;
4317 new_so = new_inp->sctp_socket;
4318 TAILQ_INIT(&tmp_queue);
4319 error = sblock(&old_so->so_rcv, waitflags);
4322 * Gak, can't get sblock, we have a problem. data will be
4323 * left stranded.. and we don't dare look at it since the
4324 * other thread may be reading something. Oh well, its a
4325 * screwed up app that does a peeloff OR a accept while
4326 * reading from the main socket... actually its only the
4327 * peeloff() case, since I think read will fail on a
4328 * listening socket..
4332 /* lock the socket buffers */
4333 SCTP_INP_READ_LOCK(old_inp);
4334 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4335 /* Pull off all for out target stcb */
4336 if (control->stcb == stcb) {
4337 /* remove it we want it */
4338 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4339 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4342 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4343 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4345 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4346 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4347 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4349 m = SCTP_BUF_NEXT(m);
4353 SCTP_INP_READ_UNLOCK(old_inp);
4354 /* Remove the sb-lock on the old socket */
4356 sbunlock(&old_so->so_rcv);
4357 /* Now we move them over to the new socket buffer */
4358 SCTP_INP_READ_LOCK(new_inp);
4359 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4360 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4363 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4364 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4366 sctp_sballoc(stcb, &new_so->so_rcv, m);
4367 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4368 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4370 m = SCTP_BUF_NEXT(m);
4373 SCTP_INP_READ_UNLOCK(new_inp);
4377 sctp_add_to_readq(struct sctp_inpcb *inp,
4378 struct sctp_tcb *stcb,
4379 struct sctp_queued_to_read *control,
4382 int inp_read_lock_held,
4384 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4390 * Here we must place the control on the end of the socket read
4391 * queue AND increment sb_cc so that select will work properly on
4394 struct mbuf *m, *prev = NULL;
4399 panic("Gak, inp NULL on add_to_readq");
4403 if (inp_read_lock_held == 0)
4404 SCTP_INP_READ_LOCK(inp);
4405 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4406 sctp_free_remote_addr(control->whoFrom);
4407 if (control->data) {
4408 sctp_m_freem(control->data);
4409 control->data = NULL;
4411 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4412 if (inp_read_lock_held == 0)
4413 SCTP_INP_READ_UNLOCK(inp);
4416 if (!(control->spec_flags & M_NOTIFICATION)) {
4417 atomic_add_int(&inp->total_recvs, 1);
4418 if (!control->do_not_ref_stcb) {
4419 atomic_add_int(&stcb->total_recvs, 1);
4423 control->held_length = 0;
4424 control->length = 0;
4426 if (SCTP_BUF_LEN(m) == 0) {
4427 /* Skip mbufs with NO length */
4430 control->data = sctp_m_free(m);
4433 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4434 m = SCTP_BUF_NEXT(prev);
4437 control->tail_mbuf = prev;
4442 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4443 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4445 sctp_sballoc(stcb, sb, m);
4446 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4447 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4449 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4450 m = SCTP_BUF_NEXT(m);
4453 control->tail_mbuf = prev;
4455 /* Everything got collapsed out?? */
4456 sctp_free_remote_addr(control->whoFrom);
4457 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4458 if (inp_read_lock_held == 0)
4459 SCTP_INP_READ_UNLOCK(inp);
4463 control->end_added = 1;
4465 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4466 if (inp_read_lock_held == 0)
4467 SCTP_INP_READ_UNLOCK(inp);
4468 if (inp && inp->sctp_socket) {
4469 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4470 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4472 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4475 so = SCTP_INP_SO(inp);
4478 atomic_add_int(&stcb->asoc.refcnt, 1);
4479 SCTP_TCB_UNLOCK(stcb);
4481 SCTP_SOCKET_LOCK(so, 1);
4483 SCTP_TCB_LOCK(stcb);
4484 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4486 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4487 SCTP_SOCKET_UNLOCK(so, 1);
4492 sctp_sorwakeup(inp, inp->sctp_socket);
4493 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4495 SCTP_SOCKET_UNLOCK(so, 1);
4504 sctp_append_to_readq(struct sctp_inpcb *inp,
4505 struct sctp_tcb *stcb,
4506 struct sctp_queued_to_read *control,
4513 * A partial delivery API event is underway. OR we are appending on
4514 * the reassembly queue.
4516 * If PDAPI this means we need to add m to the end of the data.
4517 * Increase the length in the control AND increment the sb_cc.
4518 * Otherwise sb is NULL and all we need to do is put it at the end
4519 * of the mbuf chain.
4522 struct mbuf *mm, *tail = NULL, *prev = NULL;
4525 SCTP_INP_READ_LOCK(inp);
4527 if (control == NULL) {
4530 SCTP_INP_READ_UNLOCK(inp);
4534 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) {
4535 SCTP_INP_READ_UNLOCK(inp);
4538 if (control->end_added) {
4539 /* huh this one is complete? */
4547 if (SCTP_BUF_LEN(mm) == 0) {
4548 /* Skip mbufs with NO lenght */
4551 m = sctp_m_free(mm);
4554 SCTP_BUF_NEXT(prev) = sctp_m_free(mm);
4555 mm = SCTP_BUF_NEXT(prev);
4560 len += SCTP_BUF_LEN(mm);
4562 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4563 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm));
4565 sctp_sballoc(stcb, sb, mm);
4566 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4567 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4570 mm = SCTP_BUF_NEXT(mm);
4575 /* Really there should always be a prev */
4577 /* Huh nothing left? */
4579 panic("Nothing left to add?");
4586 if (control->tail_mbuf) {
4588 SCTP_BUF_NEXT(control->tail_mbuf) = m;
4589 control->tail_mbuf = tail;
4593 if (control->data != NULL) {
4594 panic("This should NOT happen");
4598 control->tail_mbuf = tail;
4600 atomic_add_int(&control->length, len);
4602 /* message is complete */
4603 if (stcb && (control == stcb->asoc.control_pdapi)) {
4604 stcb->asoc.control_pdapi = NULL;
4606 control->held_length = 0;
4607 control->end_added = 1;
4610 control->do_not_ref_stcb = 1;
4613 * When we are appending in partial delivery, the cum-ack is used
4614 * for the actual pd-api highest tsn on this mbuf. The true cum-ack
4615 * is populated in the outbound sinfo structure from the true cumack
4616 * if the association exists...
4618 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack;
4620 SCTP_INP_READ_UNLOCK(inp);
4622 if (inp && inp->sctp_socket) {
4623 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4624 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4626 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4629 so = SCTP_INP_SO(inp);
4631 atomic_add_int(&stcb->asoc.refcnt, 1);
4632 SCTP_TCB_UNLOCK(stcb);
4634 SCTP_SOCKET_LOCK(so, 1);
4636 SCTP_TCB_LOCK(stcb);
4637 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4639 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4640 SCTP_SOCKET_UNLOCK(so, 1);
4644 sctp_sorwakeup(inp, inp->sctp_socket);
4645 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4646 SCTP_SOCKET_UNLOCK(so, 1);
4655 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4656 *************ALTERNATE ROUTING CODE
4659 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4660 *************ALTERNATE ROUTING CODE
4664 sctp_generate_cause(uint16_t code, char *info)
4667 struct sctp_gen_error_cause *cause;
4668 size_t info_len, len;
4670 if ((code == 0) || (info == NULL)) {
4673 info_len = strlen(info);
4674 len = sizeof(struct sctp_paramhdr) + info_len;
4675 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4677 SCTP_BUF_LEN(m) = len;
4678 cause = mtod(m, struct sctp_gen_error_cause *);
4679 cause->code = htons(code);
4680 cause->length = htons((uint16_t) len);
4681 memcpy(cause->info, info, info_len);
4687 sctp_generate_no_user_data_cause(uint32_t tsn)
4690 struct sctp_error_no_user_data *no_user_data_cause;
4693 len = sizeof(struct sctp_error_no_user_data);
4694 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4696 SCTP_BUF_LEN(m) = len;
4697 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4698 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4699 no_user_data_cause->cause.length = htons((uint16_t) len);
4700 no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */
4705 #ifdef SCTP_MBCNT_LOGGING
4707 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4708 struct sctp_tmit_chunk *tp1, int chk_cnt)
4710 if (tp1->data == NULL) {
4713 asoc->chunks_on_out_queue -= chk_cnt;
4714 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4715 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4716 asoc->total_output_queue_size,
4721 if (asoc->total_output_queue_size >= tp1->book_size) {
4722 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4724 asoc->total_output_queue_size = 0;
4727 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4728 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4729 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4730 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4732 stcb->sctp_socket->so_snd.sb_cc = 0;
4741 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4742 uint8_t sent, int so_locked
4743 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4748 struct sctp_stream_out *strq;
4749 struct sctp_tmit_chunk *chk = NULL, *tp2;
4750 struct sctp_stream_queue_pending *sp;
4751 uint16_t stream = 0, seq = 0;
4752 uint8_t foundeom = 0;
4755 int do_wakeup_routine = 0;
4757 stream = tp1->rec.data.stream_number;
4758 seq = tp1->rec.data.stream_seq;
4759 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
4760 stcb->asoc.abandoned_sent[0]++;
4761 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4762 stcb->asoc.strmout[stream].abandoned_sent[0]++;
4763 #if defined(SCTP_DETAILED_STR_STATS)
4764 stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4767 stcb->asoc.abandoned_unsent[0]++;
4768 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4769 stcb->asoc.strmout[stream].abandoned_unsent[0]++;
4770 #if defined(SCTP_DETAILED_STR_STATS)
4771 stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4775 ret_sz += tp1->book_size;
4776 if (tp1->data != NULL) {
4777 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4778 sctp_flight_size_decrease(tp1);
4779 sctp_total_flight_decrease(stcb, tp1);
4781 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4782 stcb->asoc.peers_rwnd += tp1->send_size;
4783 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4785 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4787 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4790 sctp_m_freem(tp1->data);
4793 do_wakeup_routine = 1;
4794 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4795 stcb->asoc.sent_queue_cnt_removeable--;
4798 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4799 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4800 SCTP_DATA_NOT_FRAG) {
4801 /* not frag'ed we ae done */
4804 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4805 /* end of frag, we are done */
4810 * Its a begin or middle piece, we must mark all of
4814 tp1 = TAILQ_NEXT(tp1, sctp_next);
4816 } while (tp1 && notdone);
4817 if (foundeom == 0) {
4819 * The multi-part message was scattered across the send and
4822 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4823 if ((tp1->rec.data.stream_number != stream) ||
4824 (tp1->rec.data.stream_seq != seq)) {
4828 * save to chk in case we have some on stream out
4829 * queue. If so and we have an un-transmitted one we
4830 * don't have to fudge the TSN.
4833 ret_sz += tp1->book_size;
4834 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4836 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4838 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4841 sctp_m_freem(tp1->data);
4844 /* No flight involved here book the size to 0 */
4846 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4849 do_wakeup_routine = 1;
4850 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4851 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4853 * on to the sent queue so we can wait for it to be
4856 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4858 stcb->asoc.send_queue_cnt--;
4859 stcb->asoc.sent_queue_cnt++;
4862 if (foundeom == 0) {
4864 * Still no eom found. That means there is stuff left on the
4865 * stream out queue.. yuck.
4867 SCTP_TCB_SEND_LOCK(stcb);
4868 strq = &stcb->asoc.strmout[stream];
4869 sp = TAILQ_FIRST(&strq->outqueue);
4871 sp->discard_rest = 1;
4873 * We may need to put a chunk on the queue that
4874 * holds the TSN that would have been sent with the
4878 /* Yep, we have to */
4879 sctp_alloc_a_chunk(stcb, chk);
4882 * we are hosed. All we can do is
4883 * nothing.. which will cause an
4884 * abort if the peer is paying
4889 memset(chk, 0, sizeof(*chk));
4890 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG;
4891 chk->sent = SCTP_FORWARD_TSN_SKIP;
4892 chk->asoc = &stcb->asoc;
4893 chk->rec.data.stream_seq = strq->next_sequence_send;
4894 chk->rec.data.stream_number = sp->stream;
4895 chk->rec.data.payloadtype = sp->ppid;
4896 chk->rec.data.context = sp->context;
4897 chk->flags = sp->act_flags;
4899 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4900 strq->chunks_on_queues++;
4901 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4902 stcb->asoc.sent_queue_cnt++;
4903 stcb->asoc.pr_sctp_cnt++;
4905 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4907 strq->next_sequence_send++;
4911 * Pull any data to free up the SB and allow
4912 * sender to "add more" while we will throw
4915 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4916 ret_sz += sp->length;
4917 do_wakeup_routine = 1;
4919 sctp_m_freem(sp->data);
4921 sp->tail_mbuf = NULL;
4925 SCTP_TCB_SEND_UNLOCK(stcb);
4927 if (do_wakeup_routine) {
4928 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4931 so = SCTP_INP_SO(stcb->sctp_ep);
4933 atomic_add_int(&stcb->asoc.refcnt, 1);
4934 SCTP_TCB_UNLOCK(stcb);
4935 SCTP_SOCKET_LOCK(so, 1);
4936 SCTP_TCB_LOCK(stcb);
4937 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4938 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4939 /* assoc was freed while we were unlocked */
4940 SCTP_SOCKET_UNLOCK(so, 1);
4945 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4946 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4948 SCTP_SOCKET_UNLOCK(so, 1);
4956 * checks to see if the given address, sa, is one that is currently known by
4957 * the kernel note: can't distinguish the same address on multiple interfaces
4958 * and doesn't handle multiple addresses with different zone/scope id's note:
4959 * ifa_ifwithaddr() compares the entire sockaddr struct
4962 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4965 struct sctp_laddr *laddr;
4967 if (holds_lock == 0) {
4968 SCTP_INP_RLOCK(inp);
4970 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4971 if (laddr->ifa == NULL)
4973 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4976 if (addr->sa_family == AF_INET) {
4977 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4978 laddr->ifa->address.sin.sin_addr.s_addr) {
4980 if (holds_lock == 0) {
4981 SCTP_INP_RUNLOCK(inp);
4983 return (laddr->ifa);
4989 if (addr->sa_family == AF_INET6) {
4990 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4991 &laddr->ifa->address.sin6)) {
4993 if (holds_lock == 0) {
4994 SCTP_INP_RUNLOCK(inp);
4996 return (laddr->ifa);
5002 if (holds_lock == 0) {
5003 SCTP_INP_RUNLOCK(inp);
5009 sctp_get_ifa_hash_val(struct sockaddr *addr)
5011 switch (addr->sa_family) {
5015 struct sockaddr_in *sin;
5017 sin = (struct sockaddr_in *)addr;
5018 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
5024 struct sockaddr_in6 *sin6;
5025 uint32_t hash_of_addr;
5027 sin6 = (struct sockaddr_in6 *)addr;
5028 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5029 sin6->sin6_addr.s6_addr32[1] +
5030 sin6->sin6_addr.s6_addr32[2] +
5031 sin6->sin6_addr.s6_addr32[3]);
5032 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5033 return (hash_of_addr);
5043 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5045 struct sctp_ifa *sctp_ifap;
5046 struct sctp_vrf *vrf;
5047 struct sctp_ifalist *hash_head;
5048 uint32_t hash_of_addr;
5050 if (holds_lock == 0)
5051 SCTP_IPI_ADDR_RLOCK();
5053 vrf = sctp_find_vrf(vrf_id);
5055 if (holds_lock == 0)
5056 SCTP_IPI_ADDR_RUNLOCK();
5059 hash_of_addr = sctp_get_ifa_hash_val(addr);
5061 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5062 if (hash_head == NULL) {
5063 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5064 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
5065 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
5066 sctp_print_address(addr);
5067 SCTP_PRINTF("No such bucket for address\n");
5068 if (holds_lock == 0)
5069 SCTP_IPI_ADDR_RUNLOCK();
5073 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5074 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5077 if (addr->sa_family == AF_INET) {
5078 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5079 sctp_ifap->address.sin.sin_addr.s_addr) {
5081 if (holds_lock == 0)
5082 SCTP_IPI_ADDR_RUNLOCK();
5089 if (addr->sa_family == AF_INET6) {
5090 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5091 &sctp_ifap->address.sin6)) {
5093 if (holds_lock == 0)
5094 SCTP_IPI_ADDR_RUNLOCK();
5101 if (holds_lock == 0)
5102 SCTP_IPI_ADDR_RUNLOCK();
5107 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
5110 /* User pulled some data, do we need a rwnd update? */
5113 struct socket *so = NULL;
5118 atomic_add_int(&stcb->asoc.refcnt, 1);
5120 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5121 SCTP_STATE_SHUTDOWN_RECEIVED |
5122 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5123 /* Pre-check If we are freeing no update */
5126 SCTP_INP_INCR_REF(stcb->sctp_ep);
5127 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5128 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5131 so = stcb->sctp_socket;
5135 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5136 /* Have you have freed enough to look */
5138 /* Yep, its worth a look and the lock overhead */
5140 /* Figure out what the rwnd would be */
5141 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5142 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5143 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5147 if (dif >= rwnd_req) {
5149 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5152 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5154 * One last check before we allow the guy possibly
5155 * to get in. There is a race, where the guy has not
5156 * reached the gate. In that case
5160 SCTP_TCB_LOCK(stcb);
5161 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5162 /* No reports here */
5163 SCTP_TCB_UNLOCK(stcb);
5166 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5167 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5169 sctp_chunk_output(stcb->sctp_ep, stcb,
5170 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5171 /* make sure no timer is running */
5172 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5173 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5174 SCTP_TCB_UNLOCK(stcb);
5176 /* Update how much we have pending */
5177 stcb->freed_by_sorcv_sincelast = dif;
5180 if (so && r_unlocked && hold_rlock) {
5181 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5183 SCTP_INP_DECR_REF(stcb->sctp_ep);
5185 atomic_add_int(&stcb->asoc.refcnt, -1);
5190 sctp_sorecvmsg(struct socket *so,
5193 struct sockaddr *from,
5196 struct sctp_sndrcvinfo *sinfo,
5200 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5201 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5202 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5203 * On the way out we may send out any combination of:
5204 * MSG_NOTIFICATION MSG_EOR
5207 struct sctp_inpcb *inp = NULL;
5209 int cp_len = 0, error = 0;
5210 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5211 struct mbuf *m = NULL;
5212 struct sctp_tcb *stcb = NULL;
5213 int wakeup_read_socket = 0;
5214 int freecnt_applied = 0;
5215 int out_flags = 0, in_flags = 0;
5216 int block_allowed = 1;
5217 uint32_t freed_so_far = 0;
5218 uint32_t copied_so_far = 0;
5219 int in_eeor_mode = 0;
5220 int no_rcv_needed = 0;
5221 uint32_t rwnd_req = 0;
5222 int hold_sblock = 0;
5225 uint32_t held_length = 0;
5226 int sockbuf_lock = 0;
5229 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5233 in_flags = *msg_flags;
5234 if (in_flags & MSG_PEEK)
5235 SCTP_STAT_INCR(sctps_read_peeks);
5239 slen = uio->uio_resid;
5241 /* Pull in and set up our int flags */
5242 if (in_flags & MSG_OOB) {
5243 /* Out of band's NOT supported */
5244 return (EOPNOTSUPP);
5246 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5247 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5250 if ((in_flags & (MSG_DONTWAIT
5253 SCTP_SO_IS_NBIO(so)) {
5256 /* setup the endpoint */
5257 inp = (struct sctp_inpcb *)so->so_pcb;
5259 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5262 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5263 /* Must be at least a MTU's worth */
5264 if (rwnd_req < SCTP_MIN_RWND)
5265 rwnd_req = SCTP_MIN_RWND;
5266 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5267 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5268 sctp_misc_ints(SCTP_SORECV_ENTER,
5269 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid);
5271 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5272 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5273 rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid);
5275 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5277 goto release_unlocked;
5284 if (hold_sblock == 0) {
5285 SOCKBUF_LOCK(&so->so_rcv);
5288 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5289 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5292 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5294 error = so->so_error;
5295 if ((in_flags & MSG_PEEK) == 0)
5299 if (so->so_rcv.sb_cc == 0) {
5306 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
5307 /* we need to wait for data */
5308 if ((so->so_rcv.sb_cc == 0) &&
5309 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5310 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5311 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5313 * For active open side clear flags for
5314 * re-use passive open is blocked by
5317 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5319 * You were aborted, passive side
5322 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5325 so->so_state &= ~(SS_ISCONNECTING |
5326 SS_ISDISCONNECTING |
5330 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5331 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5338 error = sbwait(&so->so_rcv);
5343 goto restart_nosblocks;
5344 } else if (so->so_rcv.sb_cc == 0) {
5346 error = so->so_error;
5347 if ((in_flags & MSG_PEEK) == 0)
5350 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5351 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
5352 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5354 * For active open side clear flags
5355 * for re-use passive open is
5356 * blocked by connect.
5358 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5360 * You were aborted, passive
5361 * side always hits here
5363 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5366 so->so_state &= ~(SS_ISCONNECTING |
5367 SS_ISDISCONNECTING |
5371 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5372 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5379 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5380 error = EWOULDBLOCK;
5384 if (hold_sblock == 1) {
5385 SOCKBUF_UNLOCK(&so->so_rcv);
5388 /* we possibly have data we can read */
5389 /* sa_ignore FREED_MEMORY */
5390 control = TAILQ_FIRST(&inp->read_queue);
5391 if (control == NULL) {
5393 * This could be happening since the appender did the
5394 * increment but as not yet did the tailq insert onto the
5397 if (hold_rlock == 0) {
5398 SCTP_INP_READ_LOCK(inp);
5400 control = TAILQ_FIRST(&inp->read_queue);
5401 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5403 panic("Huh, its non zero and nothing on control?");
5405 so->so_rcv.sb_cc = 0;
5407 SCTP_INP_READ_UNLOCK(inp);
5411 if ((control->length == 0) &&
5412 (control->do_not_ref_stcb)) {
5414 * Clean up code for freeing assoc that left behind a
5415 * pdapi.. maybe a peer in EEOR that just closed after
5416 * sending and never indicated a EOR.
5418 if (hold_rlock == 0) {
5420 SCTP_INP_READ_LOCK(inp);
5422 control->held_length = 0;
5423 if (control->data) {
5424 /* Hmm there is data here .. fix */
5428 m_tmp = control->data;
5430 cnt += SCTP_BUF_LEN(m_tmp);
5431 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5432 control->tail_mbuf = m_tmp;
5433 control->end_added = 1;
5435 m_tmp = SCTP_BUF_NEXT(m_tmp);
5437 control->length = cnt;
5440 TAILQ_REMOVE(&inp->read_queue, control, next);
5441 /* Add back any hiddend data */
5442 sctp_free_remote_addr(control->whoFrom);
5443 sctp_free_a_readq(stcb, control);
5447 SCTP_INP_READ_UNLOCK(inp);
5451 if ((control->length == 0) &&
5452 (control->end_added == 1)) {
5454 * Do we also need to check for (control->pdapi_aborted ==
5457 if (hold_rlock == 0) {
5459 SCTP_INP_READ_LOCK(inp);
5461 TAILQ_REMOVE(&inp->read_queue, control, next);
5462 if (control->data) {
5464 panic("control->data not null but control->length == 0");
5466 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5467 sctp_m_freem(control->data);
5468 control->data = NULL;
5471 if (control->aux_data) {
5472 sctp_m_free(control->aux_data);
5473 control->aux_data = NULL;
5475 sctp_free_remote_addr(control->whoFrom);
5476 sctp_free_a_readq(stcb, control);
5479 SCTP_INP_READ_UNLOCK(inp);
5483 if (control->length == 0) {
5484 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5486 /* find a more suitable one then this */
5487 ctl = TAILQ_NEXT(control, next);
5489 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5491 (ctl->spec_flags & M_NOTIFICATION) ||
5492 ((ctl->do_not_ref_stcb == 0) &&
5493 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5496 * If we have a different TCB next, and there is data
5497 * present. If we have already taken some (pdapi), OR we can
5498 * ref the tcb and no delivery as started on this stream, we
5499 * take it. Note we allow a notification on a different
5500 * assoc to be delivered..
5504 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5506 ((ctl->some_taken) ||
5507 ((ctl->do_not_ref_stcb == 0) &&
5508 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5509 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5511 * If we have the same tcb, and there is data present, and we
5512 * have the strm interleave feature present. Then if we have
5513 * taken some (pdapi) or we can refer to tht tcb AND we have
5514 * not started a delivery for this stream, we can take it.
5515 * Note we do NOT allow a notificaiton on the same assoc to
5521 ctl = TAILQ_NEXT(ctl, next);
5525 * if we reach here, not suitable replacement is available
5526 * <or> fragment interleave is NOT on. So stuff the sb_cc
5527 * into the our held count, and its time to sleep again.
5529 held_length = so->so_rcv.sb_cc;
5530 control->held_length = so->so_rcv.sb_cc;
5533 /* Clear the held length since there is something to read */
5534 control->held_length = 0;
5536 SCTP_INP_READ_UNLOCK(inp);
5541 * If we reach here, control has a some data for us to read off.
5542 * Note that stcb COULD be NULL.
5544 control->some_taken++;
5546 SOCKBUF_UNLOCK(&so->so_rcv);
5549 stcb = control->stcb;
5551 if ((control->do_not_ref_stcb == 0) &&
5552 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5553 if (freecnt_applied == 0)
5555 } else if (control->do_not_ref_stcb == 0) {
5556 /* you can't free it on me please */
5558 * The lock on the socket buffer protects us so the
5559 * free code will stop. But since we used the
5560 * socketbuf lock and the sender uses the tcb_lock
5561 * to increment, we need to use the atomic add to
5564 if (freecnt_applied) {
5566 panic("refcnt already incremented");
5568 SCTP_PRINTF("refcnt already incremented?\n");
5571 atomic_add_int(&stcb->asoc.refcnt, 1);
5572 freecnt_applied = 1;
5575 * Setup to remember how much we have not yet told
5576 * the peer our rwnd has opened up. Note we grab the
5577 * value from the tcb from last time. Note too that
5578 * sack sending clears this when a sack is sent,
5579 * which is fine. Once we hit the rwnd_req, we then
5580 * will go to the sctp_user_rcvd() that will not
5581 * lock until it KNOWs it MUST send a WUP-SACK.
5583 freed_so_far = stcb->freed_by_sorcv_sincelast;
5584 stcb->freed_by_sorcv_sincelast = 0;
5588 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5589 control->do_not_ref_stcb == 0) {
5590 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5592 /* First lets get off the sinfo and sockaddr info */
5593 if ((sinfo) && filling_sinfo) {
5594 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo));
5595 nxt = TAILQ_NEXT(control, next);
5596 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5597 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5598 struct sctp_extrcvinfo *s_extra;
5600 s_extra = (struct sctp_extrcvinfo *)sinfo;
5603 s_extra->sreinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5604 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5605 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5607 if (nxt->spec_flags & M_NOTIFICATION) {
5608 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5610 s_extra->sreinfo_next_aid = nxt->sinfo_assoc_id;
5611 s_extra->sreinfo_next_length = nxt->length;
5612 s_extra->sreinfo_next_ppid = nxt->sinfo_ppid;
5613 s_extra->sreinfo_next_stream = nxt->sinfo_stream;
5614 if (nxt->tail_mbuf != NULL) {
5615 if (nxt->end_added) {
5616 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5621 * we explicitly 0 this, since the memcpy
5622 * got some other things beyond the older
5623 * sinfo_ that is on the control's structure
5627 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
5628 s_extra->sreinfo_next_aid = 0;
5629 s_extra->sreinfo_next_length = 0;
5630 s_extra->sreinfo_next_ppid = 0;
5631 s_extra->sreinfo_next_stream = 0;
5635 * update off the real current cum-ack, if we have an stcb.
5637 if ((control->do_not_ref_stcb == 0) && stcb)
5638 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5640 * mask off the high bits, we keep the actual chunk bits in
5643 sinfo->sinfo_flags &= 0x00ff;
5644 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5645 sinfo->sinfo_flags |= SCTP_UNORDERED;
5648 #ifdef SCTP_ASOCLOG_OF_TSNS
5650 int index, newindex;
5651 struct sctp_pcbtsn_rlog *entry;
5654 index = inp->readlog_index;
5655 newindex = index + 1;
5656 if (newindex >= SCTP_READ_LOG_SIZE) {
5659 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5660 entry = &inp->readlog[index];
5661 entry->vtag = control->sinfo_assoc_id;
5662 entry->strm = control->sinfo_stream;
5663 entry->seq = control->sinfo_ssn;
5664 entry->sz = control->length;
5665 entry->flgs = control->sinfo_flags;
5668 if ((fromlen > 0) && (from != NULL)) {
5669 union sctp_sockstore store;
5672 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5675 len = sizeof(struct sockaddr_in6);
5676 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5677 store.sin6.sin6_port = control->port_from;
5683 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5684 len = sizeof(struct sockaddr_in6);
5685 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5687 store.sin6.sin6_port = control->port_from;
5689 len = sizeof(struct sockaddr_in);
5690 store.sin = control->whoFrom->ro._l_addr.sin;
5691 store.sin.sin_port = control->port_from;
5694 len = sizeof(struct sockaddr_in);
5695 store.sin = control->whoFrom->ro._l_addr.sin;
5696 store.sin.sin_port = control->port_from;
5704 memcpy(from, &store, min((size_t)fromlen, len));
5707 struct sockaddr_in6 lsa6, *from6;
5709 from6 = (struct sockaddr_in6 *)from;
5710 sctp_recover_scope_mac(from6, (&lsa6));
5714 /* now copy out what data we can */
5716 /* copy out each mbuf in the chain up to length */
5720 /* Move out all we can */
5721 cp_len = (int)uio->uio_resid;
5722 my_len = (int)SCTP_BUF_LEN(m);
5723 if (cp_len > my_len) {
5724 /* not enough in this buf */
5728 SCTP_INP_READ_UNLOCK(inp);
5732 error = uiomove(mtod(m, char *), cp_len, uio);
5734 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5737 if ((control->do_not_ref_stcb == 0) && stcb &&
5738 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5742 /* error we are out of here */
5745 if ((SCTP_BUF_NEXT(m) == NULL) &&
5746 (cp_len >= SCTP_BUF_LEN(m)) &&
5747 ((control->end_added == 0) ||
5748 (control->end_added &&
5749 (TAILQ_NEXT(control, next) == NULL)))
5751 SCTP_INP_READ_LOCK(inp);
5754 if (cp_len == SCTP_BUF_LEN(m)) {
5755 if ((SCTP_BUF_NEXT(m) == NULL) &&
5756 (control->end_added)) {
5757 out_flags |= MSG_EOR;
5758 if ((control->do_not_ref_stcb == 0) &&
5759 (control->stcb != NULL) &&
5760 ((control->spec_flags & M_NOTIFICATION) == 0))
5761 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5763 if (control->spec_flags & M_NOTIFICATION) {
5764 out_flags |= MSG_NOTIFICATION;
5766 /* we ate up the mbuf */
5767 if (in_flags & MSG_PEEK) {
5769 m = SCTP_BUF_NEXT(m);
5770 copied_so_far += cp_len;
5772 /* dispose of the mbuf */
5773 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5774 sctp_sblog(&so->so_rcv,
5775 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5777 sctp_sbfree(control, stcb, &so->so_rcv, m);
5778 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5779 sctp_sblog(&so->so_rcv,
5780 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5782 copied_so_far += cp_len;
5783 freed_so_far += cp_len;
5784 freed_so_far += MSIZE;
5785 atomic_subtract_int(&control->length, cp_len);
5786 control->data = sctp_m_free(m);
5789 * been through it all, must hold sb
5790 * lock ok to null tail
5792 if (control->data == NULL) {
5794 if ((control->end_added == 0) ||
5795 (TAILQ_NEXT(control, next) == NULL)) {
5803 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5804 panic("Hmm we don't own the lock?");
5808 control->tail_mbuf = NULL;
5810 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5811 panic("end_added, nothing left and no MSG_EOR");
5817 /* Do we need to trim the mbuf? */
5818 if (control->spec_flags & M_NOTIFICATION) {
5819 out_flags |= MSG_NOTIFICATION;
5821 if ((in_flags & MSG_PEEK) == 0) {
5822 SCTP_BUF_RESV_UF(m, cp_len);
5823 SCTP_BUF_LEN(m) -= cp_len;
5824 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5825 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5827 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5828 if ((control->do_not_ref_stcb == 0) &&
5830 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5832 copied_so_far += cp_len;
5833 freed_so_far += cp_len;
5834 freed_so_far += MSIZE;
5835 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5836 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5837 SCTP_LOG_SBRESULT, 0);
5839 atomic_subtract_int(&control->length, cp_len);
5841 copied_so_far += cp_len;
5844 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5847 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5848 (control->do_not_ref_stcb == 0) &&
5849 (freed_so_far >= rwnd_req)) {
5850 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5852 } /* end while(m) */
5854 * At this point we have looked at it all and we either have
5855 * a MSG_EOR/or read all the user wants... <OR>
5856 * control->length == 0.
5858 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5859 /* we are done with this control */
5860 if (control->length == 0) {
5861 if (control->data) {
5863 panic("control->data not null at read eor?");
5865 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5866 sctp_m_freem(control->data);
5867 control->data = NULL;
5871 if (TAILQ_NEXT(control, next) == NULL) {
5873 * If we don't have a next we need a
5874 * lock, if there is a next
5875 * interrupt is filling ahead of us
5876 * and we don't need a lock to
5877 * remove this guy (which is the
5878 * head of the queue).
5880 if (hold_rlock == 0) {
5881 SCTP_INP_READ_LOCK(inp);
5885 TAILQ_REMOVE(&inp->read_queue, control, next);
5886 /* Add back any hiddend data */
5887 if (control->held_length) {
5889 control->held_length = 0;
5890 wakeup_read_socket = 1;
5892 if (control->aux_data) {
5893 sctp_m_free(control->aux_data);
5894 control->aux_data = NULL;
5896 no_rcv_needed = control->do_not_ref_stcb;
5897 sctp_free_remote_addr(control->whoFrom);
5898 control->data = NULL;
5899 sctp_free_a_readq(stcb, control);
5901 if ((freed_so_far >= rwnd_req) &&
5902 (no_rcv_needed == 0))
5903 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5907 * The user did not read all of this
5908 * message, turn off the returned MSG_EOR
5909 * since we are leaving more behind on the
5913 if (control->end_added &&
5914 (control->data == NULL) &&
5915 (control->tail_mbuf == NULL)) {
5916 panic("Gak, control->length is corrupt?");
5919 no_rcv_needed = control->do_not_ref_stcb;
5920 out_flags &= ~MSG_EOR;
5923 if (out_flags & MSG_EOR) {
5926 if ((uio->uio_resid == 0) ||
5928 (copied_so_far >= (uint32_t) max(so->so_rcv.sb_lowat, 1)))) {
5932 * If I hit here the receiver wants more and this message is
5933 * NOT done (pd-api). So two questions. Can we block? if not
5934 * we are done. Did the user NOT set MSG_WAITALL?
5936 if (block_allowed == 0) {
5940 * We need to wait for more data a few things: - We don't
5941 * sbunlock() so we don't get someone else reading. - We
5942 * must be sure to account for the case where what is added
5943 * is NOT to our control when we wakeup.
5947 * Do we need to tell the transport a rwnd update might be
5948 * needed before we go to sleep?
5950 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5951 ((freed_so_far >= rwnd_req) &&
5952 (control->do_not_ref_stcb == 0) &&
5953 (no_rcv_needed == 0))) {
5954 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5957 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5960 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5963 if (hold_rlock == 1) {
5964 SCTP_INP_READ_UNLOCK(inp);
5967 if (hold_sblock == 0) {
5968 SOCKBUF_LOCK(&so->so_rcv);
5971 if ((copied_so_far) && (control->length == 0) &&
5972 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5975 if (so->so_rcv.sb_cc <= control->held_length) {
5976 error = sbwait(&so->so_rcv);
5980 control->held_length = 0;
5983 SOCKBUF_UNLOCK(&so->so_rcv);
5986 if (control->length == 0) {
5987 /* still nothing here */
5988 if (control->end_added == 1) {
5989 /* he aborted, or is done i.e.did a shutdown */
5990 out_flags |= MSG_EOR;
5991 if (control->pdapi_aborted) {
5992 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5993 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5995 out_flags |= MSG_TRUNC;
5997 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5998 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6000 goto done_with_control;
6002 if (so->so_rcv.sb_cc > held_length) {
6003 control->held_length = so->so_rcv.sb_cc;
6006 goto wait_some_more;
6007 } else if (control->data == NULL) {
6009 * we must re-sync since data is probably being
6012 SCTP_INP_READ_LOCK(inp);
6013 if ((control->length > 0) && (control->data == NULL)) {
6015 * big trouble.. we have the lock and its
6019 panic("Impossible data==NULL length !=0");
6021 out_flags |= MSG_EOR;
6022 out_flags |= MSG_TRUNC;
6023 control->length = 0;
6024 SCTP_INP_READ_UNLOCK(inp);
6025 goto done_with_control;
6027 SCTP_INP_READ_UNLOCK(inp);
6028 /* We will fall around to get more data */
6033 * Give caller back the mbuf chain,
6034 * store in uio_resid the length
6036 wakeup_read_socket = 0;
6037 if ((control->end_added == 0) ||
6038 (TAILQ_NEXT(control, next) == NULL)) {
6039 /* Need to get rlock */
6040 if (hold_rlock == 0) {
6041 SCTP_INP_READ_LOCK(inp);
6045 if (control->end_added) {
6046 out_flags |= MSG_EOR;
6047 if ((control->do_not_ref_stcb == 0) &&
6048 (control->stcb != NULL) &&
6049 ((control->spec_flags & M_NOTIFICATION) == 0))
6050 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6052 if (control->spec_flags & M_NOTIFICATION) {
6053 out_flags |= MSG_NOTIFICATION;
6055 uio->uio_resid = control->length;
6056 *mp = control->data;
6059 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6060 sctp_sblog(&so->so_rcv,
6061 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6063 sctp_sbfree(control, stcb, &so->so_rcv, m);
6064 freed_so_far += SCTP_BUF_LEN(m);
6065 freed_so_far += MSIZE;
6066 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6067 sctp_sblog(&so->so_rcv,
6068 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6070 m = SCTP_BUF_NEXT(m);
6072 control->data = control->tail_mbuf = NULL;
6073 control->length = 0;
6074 if (out_flags & MSG_EOR) {
6075 /* Done with this control */
6076 goto done_with_control;
6080 if (hold_rlock == 1) {
6081 SCTP_INP_READ_UNLOCK(inp);
6084 if (hold_sblock == 1) {
6085 SOCKBUF_UNLOCK(&so->so_rcv);
6088 sbunlock(&so->so_rcv);
6093 SOCKBUF_UNLOCK(&so->so_rcv);
6096 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6097 if ((freed_so_far >= rwnd_req) &&
6098 (control && (control->do_not_ref_stcb == 0)) &&
6099 (no_rcv_needed == 0))
6100 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6104 *msg_flags = out_flags;
6106 if (((out_flags & MSG_EOR) == 0) &&
6107 ((in_flags & MSG_PEEK) == 0) &&
6109 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6110 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6111 struct sctp_extrcvinfo *s_extra;
6113 s_extra = (struct sctp_extrcvinfo *)sinfo;
6114 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
6116 if (hold_rlock == 1) {
6117 SCTP_INP_READ_UNLOCK(inp);
6120 SOCKBUF_UNLOCK(&so->so_rcv);
6123 sbunlock(&so->so_rcv);
6125 if (freecnt_applied) {
6127 * The lock on the socket buffer protects us so the free
6128 * code will stop. But since we used the socketbuf lock and
6129 * the sender uses the tcb_lock to increment, we need to use
6130 * the atomic add to the refcnt.
6134 panic("stcb for refcnt has gone NULL?");
6140 atomic_add_int(&stcb->asoc.refcnt, -1);
6141 /* Save the value back for next time */
6142 stcb->freed_by_sorcv_sincelast = freed_so_far;
6144 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6146 sctp_misc_ints(SCTP_SORECV_DONE,
6148 ((uio) ? (slen - uio->uio_resid) : slen),
6152 sctp_misc_ints(SCTP_SORECV_DONE,
6154 ((uio) ? (slen - uio->uio_resid) : slen),
6160 if (wakeup_read_socket) {
6161 sctp_sorwakeup(inp, so);
6167 #ifdef SCTP_MBUF_LOGGING
6169 sctp_m_free(struct mbuf *m)
6171 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6172 sctp_log_mb(m, SCTP_MBUF_IFREE);
6178 sctp_m_freem(struct mbuf *mb)
6181 mb = sctp_m_free(mb);
6187 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6190 * Given a local address. For all associations that holds the
6191 * address, request a peer-set-primary.
6193 struct sctp_ifa *ifa;
6194 struct sctp_laddr *wi;
6196 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6198 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6199 return (EADDRNOTAVAIL);
6202 * Now that we have the ifa we must awaken the iterator with this
6205 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6207 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6210 /* Now incr the count and int wi structure */
6211 SCTP_INCR_LADDR_COUNT();
6212 bzero(wi, sizeof(*wi));
6213 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6215 wi->action = SCTP_SET_PRIM_ADDR;
6216 atomic_add_int(&ifa->refcount, 1);
6218 /* Now add it to the work queue */
6219 SCTP_WQ_ADDR_LOCK();
6221 * Should this really be a tailq? As it is we will process the
6224 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6225 SCTP_WQ_ADDR_UNLOCK();
6226 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6227 (struct sctp_inpcb *)NULL,
6228 (struct sctp_tcb *)NULL,
6229 (struct sctp_nets *)NULL);
6235 sctp_soreceive(struct socket *so,
6236 struct sockaddr **psa,
6239 struct mbuf **controlp,
6243 uint8_t sockbuf[256];
6244 struct sockaddr *from;
6245 struct sctp_extrcvinfo sinfo;
6246 int filling_sinfo = 1;
6247 struct sctp_inpcb *inp;
6249 inp = (struct sctp_inpcb *)so->so_pcb;
6250 /* pickup the assoc we are reading from */
6252 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6255 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6256 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6257 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6258 (controlp == NULL)) {
6259 /* user does not want the sndrcv ctl */
6263 from = (struct sockaddr *)sockbuf;
6264 fromlen = sizeof(sockbuf);
6271 if (filling_sinfo) {
6272 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6274 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6275 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6276 if (controlp != NULL) {
6277 /* copy back the sinfo in a CMSG format */
6279 *controlp = sctp_build_ctl_nchunk(inp,
6280 (struct sctp_sndrcvinfo *)&sinfo);
6285 /* copy back the address info */
6286 if (from && from->sa_len) {
6287 *psa = sodupsockaddr(from, M_NOWAIT);
6300 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6301 int totaddr, int *error)
6305 struct sctp_inpcb *inp;
6306 struct sockaddr *sa;
6310 struct sockaddr_in *sin;
6314 struct sockaddr_in6 *sin6;
6319 inp = stcb->sctp_ep;
6321 for (i = 0; i < totaddr; i++) {
6322 switch (sa->sa_family) {
6325 incr = sizeof(struct sockaddr_in);
6326 sin = (struct sockaddr_in *)sa;
6327 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6328 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6329 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6330 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6331 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6332 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6336 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6337 /* assoc gone no un-lock */
6338 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6339 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6340 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6349 incr = sizeof(struct sockaddr_in6);
6350 sin6 = (struct sockaddr_in6 *)sa;
6351 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6352 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6353 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6354 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6355 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6359 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6360 /* assoc gone no un-lock */
6361 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6362 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6363 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6373 sa = (struct sockaddr *)((caddr_t)sa + incr);
6380 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6381 int *totaddr, int *num_v4, int *num_v6, int *error,
6382 int limit, int *bad_addr)
6384 struct sockaddr *sa;
6385 struct sctp_tcb *stcb = NULL;
6391 *error = *num_v6 = *num_v4 = 0;
6392 /* account and validate addresses */
6393 for (i = 0; i < (size_t)*totaddr; i++) {
6394 switch (sa->sa_family) {
6398 incr = sizeof(struct sockaddr_in);
6399 if (sa->sa_len != incr) {
6400 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6410 struct sockaddr_in6 *sin6;
6412 sin6 = (struct sockaddr_in6 *)sa;
6413 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6414 /* Must be non-mapped for connectx */
6415 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6421 incr = sizeof(struct sockaddr_in6);
6422 if (sa->sa_len != incr) {
6423 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6436 if (i == (size_t)*totaddr) {
6439 SCTP_INP_INCR_REF(inp);
6440 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6442 /* Already have or am bring up an association */
6445 SCTP_INP_DECR_REF(inp);
6447 if ((at + incr) > (size_t)limit) {
6451 sa = (struct sockaddr *)((caddr_t)sa + incr);
6453 return ((struct sctp_tcb *)NULL);
6457 * sctp_bindx(ADD) for one address.
6458 * assumes all arguments are valid/checked by caller.
6461 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6462 struct sockaddr *sa, sctp_assoc_t assoc_id,
6463 uint32_t vrf_id, int *error, void *p)
6465 struct sockaddr *addr_touse;
6467 #if defined(INET) && defined(INET6)
6468 struct sockaddr_in sin;
6472 /* see if we're bound all already! */
6473 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6474 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6480 if (sa->sa_family == AF_INET6) {
6482 struct sockaddr_in6 *sin6;
6485 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6486 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6490 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6491 /* can only bind v6 on PF_INET6 sockets */
6492 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6497 sin6 = (struct sockaddr_in6 *)addr_touse;
6498 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6499 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6500 SCTP_IPV6_V6ONLY(inp)) {
6501 /* can't bind v4-mapped on PF_INET sockets */
6502 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6506 in6_sin6_2_sin(&sin, sin6);
6507 addr_touse = (struct sockaddr *)&sin;
6513 if (sa->sa_family == AF_INET) {
6514 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6515 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6519 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6520 SCTP_IPV6_V6ONLY(inp)) {
6521 /* can't bind v4 on PF_INET sockets */
6522 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6528 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6530 /* Can't get proc for Net/Open BSD */
6531 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6535 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6539 * No locks required here since bind and mgmt_ep_sa all do their own
6540 * locking. If we do something for the FIX: below we may need to
6541 * lock in that case.
6543 if (assoc_id == 0) {
6544 /* add the address */
6545 struct sctp_inpcb *lep;
6546 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6548 /* validate the incoming port */
6549 if ((lsin->sin_port != 0) &&
6550 (lsin->sin_port != inp->sctp_lport)) {
6551 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6555 /* user specified 0 port, set it to existing port */
6556 lsin->sin_port = inp->sctp_lport;
6559 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6562 * We must decrement the refcount since we have the
6563 * ep already and are binding. No remove going on
6566 SCTP_INP_DECR_REF(lep);
6569 /* already bound to it.. ok */
6571 } else if (lep == NULL) {
6572 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6573 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6574 SCTP_ADD_IP_ADDRESS,
6577 *error = EADDRINUSE;
6583 * FIX: decide whether we allow assoc based bindx
6589 * sctp_bindx(DELETE) for one address.
6590 * assumes all arguments are valid/checked by caller.
6593 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6594 struct sockaddr *sa, sctp_assoc_t assoc_id,
6595 uint32_t vrf_id, int *error)
6597 struct sockaddr *addr_touse;
6599 #if defined(INET) && defined(INET6)
6600 struct sockaddr_in sin;
6604 /* see if we're bound all already! */
6605 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6606 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6612 if (sa->sa_family == AF_INET6) {
6614 struct sockaddr_in6 *sin6;
6618 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6619 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6623 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6624 /* can only bind v6 on PF_INET6 sockets */
6625 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6630 sin6 = (struct sockaddr_in6 *)addr_touse;
6631 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6632 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6633 SCTP_IPV6_V6ONLY(inp)) {
6634 /* can't bind mapped-v4 on PF_INET sockets */
6635 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6639 in6_sin6_2_sin(&sin, sin6);
6640 addr_touse = (struct sockaddr *)&sin;
6646 if (sa->sa_family == AF_INET) {
6647 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6648 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6652 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6653 SCTP_IPV6_V6ONLY(inp)) {
6654 /* can't bind v4 on PF_INET sockets */
6655 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6662 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6663 * below is ever changed we may need to lock before calling
6664 * association level binding.
6666 if (assoc_id == 0) {
6667 /* delete the address */
6668 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6669 SCTP_DEL_IP_ADDRESS,
6673 * FIX: decide whether we allow assoc based bindx
6679 * returns the valid local address count for an assoc, taking into account
6683 sctp_local_addr_count(struct sctp_tcb *stcb)
6688 int ipv4_local_scope, ipv4_addr_legal;
6692 int local_scope, site_scope, ipv6_addr_legal;
6695 struct sctp_vrf *vrf;
6696 struct sctp_ifn *sctp_ifn;
6697 struct sctp_ifa *sctp_ifa;
6700 /* Turn on all the appropriate scopes */
6701 loopback_scope = stcb->asoc.scope.loopback_scope;
6703 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6704 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6707 local_scope = stcb->asoc.scope.local_scope;
6708 site_scope = stcb->asoc.scope.site_scope;
6709 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6711 SCTP_IPI_ADDR_RLOCK();
6712 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6714 /* no vrf, no addresses */
6715 SCTP_IPI_ADDR_RUNLOCK();
6718 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6720 * bound all case: go through all ifns on the vrf
6722 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6723 if ((loopback_scope == 0) &&
6724 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6727 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6728 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6730 switch (sctp_ifa->address.sa.sa_family) {
6733 if (ipv4_addr_legal) {
6734 struct sockaddr_in *sin;
6736 sin = &sctp_ifa->address.sin;
6737 if (sin->sin_addr.s_addr == 0) {
6744 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6745 &sin->sin_addr) != 0) {
6748 if ((ipv4_local_scope == 0) &&
6749 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6752 /* count this one */
6761 if (ipv6_addr_legal) {
6762 struct sockaddr_in6 *sin6;
6764 sin6 = &sctp_ifa->address.sin6;
6765 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6768 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6769 &sin6->sin6_addr) != 0) {
6772 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6773 if (local_scope == 0)
6775 if (sin6->sin6_scope_id == 0) {
6776 if (sa6_recoverscope(sin6) != 0)
6794 if ((site_scope == 0) &&
6795 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6798 /* count this one */
6813 struct sctp_laddr *laddr;
6815 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6817 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6820 /* count this one */
6824 SCTP_IPI_ADDR_RUNLOCK();
6828 #if defined(SCTP_LOCAL_TRACE_BUF)
6831 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)
6833 uint32_t saveindex, newindex;
6836 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6837 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6840 newindex = saveindex + 1;
6842 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6843 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6846 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6847 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6848 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6849 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6850 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6851 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6852 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6853 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6858 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *ignored,
6859 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
6864 struct ip6_hdr *ip6;
6867 struct mbuf *sp, *last;
6868 struct udphdr *uhdr;
6871 if ((m->m_flags & M_PKTHDR) == 0) {
6872 /* Can't handle one that is not a pkt hdr */
6875 /* Pull the src port */
6876 iph = mtod(m, struct ip *);
6877 uhdr = (struct udphdr *)((caddr_t)iph + off);
6878 port = uhdr->uh_sport;
6880 * Split out the mbuf chain. Leave the IP header in m, place the
6883 sp = m_split(m, off, M_NOWAIT);
6885 /* Gak, drop packet, we can't do a split */
6888 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6889 /* Gak, packet can't have an SCTP header in it - too small */
6893 /* Now pull up the UDP header and SCTP header together */
6894 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6896 /* Gak pullup failed */
6899 /* Trim out the UDP header */
6900 m_adj(sp, sizeof(struct udphdr));
6902 /* Now reconstruct the mbuf chain */
6903 for (last = m; last->m_next; last = last->m_next);
6905 m->m_pkthdr.len += sp->m_pkthdr.len;
6906 iph = mtod(m, struct ip *);
6907 switch (iph->ip_v) {
6910 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
6911 sctp_input_with_port(m, off, port);
6915 case IPV6_VERSION >> 4:
6916 ip6 = mtod(m, struct ip6_hdr *);
6917 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
6918 sctp6_input_with_port(&m, &off, port);
6931 sctp_over_udp_stop(void)
6934 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6938 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
6939 soclose(SCTP_BASE_INFO(udp4_tun_socket));
6940 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
6944 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
6945 soclose(SCTP_BASE_INFO(udp6_tun_socket));
6946 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
6952 sctp_over_udp_start(void)
6958 struct sockaddr_in sin;
6962 struct sockaddr_in6 sin6;
6966 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6969 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
6970 if (ntohs(port) == 0) {
6971 /* Must have a port set */
6975 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
6976 /* Already running -- must stop first */
6981 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
6982 /* Already running -- must stop first */
6987 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
6988 SOCK_DGRAM, IPPROTO_UDP,
6989 curthread->td_ucred, curthread))) {
6990 sctp_over_udp_stop();
6993 /* Call the special UDP hook. */
6994 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
6995 sctp_recv_udp_tunneled_packet, NULL))) {
6996 sctp_over_udp_stop();
6999 /* Ok, we have a socket, bind it to the port. */
7000 memset(&sin, 0, sizeof(struct sockaddr_in));
7001 sin.sin_len = sizeof(struct sockaddr_in);
7002 sin.sin_family = AF_INET;
7003 sin.sin_port = htons(port);
7004 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7005 (struct sockaddr *)&sin, curthread))) {
7006 sctp_over_udp_stop();
7011 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7012 SOCK_DGRAM, IPPROTO_UDP,
7013 curthread->td_ucred, curthread))) {
7014 sctp_over_udp_stop();
7017 /* Call the special UDP hook. */
7018 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7019 sctp_recv_udp_tunneled_packet, NULL))) {
7020 sctp_over_udp_stop();
7023 /* Ok, we have a socket, bind it to the port. */
7024 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7025 sin6.sin6_len = sizeof(struct sockaddr_in6);
7026 sin6.sin6_family = AF_INET6;
7027 sin6.sin6_port = htons(port);
7028 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7029 (struct sockaddr *)&sin6, curthread))) {
7030 sctp_over_udp_stop();