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)
1452 int did_output, type;
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;
1493 SCTP_INP_INCR_REF(inp);
1494 if ((inp->sctp_socket == NULL) &&
1495 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1496 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1497 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1498 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1499 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1500 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1501 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1502 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1503 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1505 SCTP_INP_DECR_REF(inp);
1510 tmr->stopped_from = 0xa004;
1512 atomic_add_int(&stcb->asoc.refcnt, 1);
1513 if (stcb->asoc.state == 0) {
1514 atomic_add_int(&stcb->asoc.refcnt, -1);
1516 SCTP_INP_DECR_REF(inp);
1522 tmr->stopped_from = 0xa005;
1523 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", tmr->type);
1524 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1526 SCTP_INP_DECR_REF(inp);
1529 atomic_add_int(&stcb->asoc.refcnt, -1);
1534 tmr->stopped_from = 0xa006;
1537 SCTP_TCB_LOCK(stcb);
1538 atomic_add_int(&stcb->asoc.refcnt, -1);
1539 if ((tmr->type != SCTP_TIMER_TYPE_ASOCKILL) &&
1540 ((stcb->asoc.state == 0) ||
1541 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1542 SCTP_TCB_UNLOCK(stcb);
1544 SCTP_INP_DECR_REF(inp);
1550 /* record in stopped what t-o occured */
1551 tmr->stopped_from = tmr->type;
1553 /* mark as being serviced now */
1554 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1556 * Callout has been rescheduled.
1560 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1562 * Not active, so no action.
1566 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1568 /* call the handler for the appropriate timer type */
1569 switch (tmr->type) {
1570 case SCTP_TIMER_TYPE_ZERO_COPY:
1574 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1575 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1578 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1582 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1583 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1586 case SCTP_TIMER_TYPE_ADDR_WQ:
1587 sctp_handle_addr_wq();
1589 case SCTP_TIMER_TYPE_SEND:
1590 if ((stcb == NULL) || (inp == NULL)) {
1593 SCTP_STAT_INCR(sctps_timodata);
1594 stcb->asoc.timodata++;
1595 stcb->asoc.num_send_timers_up--;
1596 if (stcb->asoc.num_send_timers_up < 0) {
1597 stcb->asoc.num_send_timers_up = 0;
1599 SCTP_TCB_LOCK_ASSERT(stcb);
1600 if (sctp_t3rxt_timer(inp, stcb, net)) {
1601 /* no need to unlock on tcb its gone */
1605 SCTP_TCB_LOCK_ASSERT(stcb);
1606 #ifdef SCTP_AUDITING_ENABLED
1607 sctp_auditing(4, inp, stcb, net);
1609 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1610 if ((stcb->asoc.num_send_timers_up == 0) &&
1611 (stcb->asoc.sent_queue_cnt > 0)) {
1612 struct sctp_tmit_chunk *chk;
1615 * safeguard. If there on some on the sent queue
1616 * somewhere but no timers running something is
1617 * wrong... so we start a timer on the first chunk
1618 * on the send queue on whatever net it is sent to.
1620 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1621 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1625 case SCTP_TIMER_TYPE_INIT:
1626 if ((stcb == NULL) || (inp == NULL)) {
1629 SCTP_STAT_INCR(sctps_timoinit);
1630 stcb->asoc.timoinit++;
1631 if (sctp_t1init_timer(inp, stcb, net)) {
1632 /* no need to unlock on tcb its gone */
1635 /* We do output but not here */
1638 case SCTP_TIMER_TYPE_RECV:
1639 if ((stcb == NULL) || (inp == NULL)) {
1642 SCTP_STAT_INCR(sctps_timosack);
1643 stcb->asoc.timosack++;
1644 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1645 #ifdef SCTP_AUDITING_ENABLED
1646 sctp_auditing(4, inp, stcb, net);
1648 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1650 case SCTP_TIMER_TYPE_SHUTDOWN:
1651 if ((stcb == NULL) || (inp == NULL)) {
1654 if (sctp_shutdown_timer(inp, stcb, net)) {
1655 /* no need to unlock on tcb its gone */
1658 SCTP_STAT_INCR(sctps_timoshutdown);
1659 stcb->asoc.timoshutdown++;
1660 #ifdef SCTP_AUDITING_ENABLED
1661 sctp_auditing(4, inp, stcb, net);
1663 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1665 case SCTP_TIMER_TYPE_HEARTBEAT:
1666 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1669 SCTP_STAT_INCR(sctps_timoheartbeat);
1670 stcb->asoc.timoheartbeat++;
1671 if (sctp_heartbeat_timer(inp, stcb, net)) {
1672 /* no need to unlock on tcb its gone */
1675 #ifdef SCTP_AUDITING_ENABLED
1676 sctp_auditing(4, inp, stcb, net);
1678 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1679 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1680 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1683 case SCTP_TIMER_TYPE_COOKIE:
1684 if ((stcb == NULL) || (inp == NULL)) {
1687 if (sctp_cookie_timer(inp, stcb, net)) {
1688 /* no need to unlock on tcb its gone */
1691 SCTP_STAT_INCR(sctps_timocookie);
1692 stcb->asoc.timocookie++;
1693 #ifdef SCTP_AUDITING_ENABLED
1694 sctp_auditing(4, inp, stcb, net);
1697 * We consider T3 and Cookie timer pretty much the same with
1698 * respect to where from in chunk_output.
1700 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1702 case SCTP_TIMER_TYPE_NEWCOOKIE:
1710 SCTP_STAT_INCR(sctps_timosecret);
1711 (void)SCTP_GETTIME_TIMEVAL(&tv);
1712 SCTP_INP_WLOCK(inp);
1713 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1714 inp->sctp_ep.last_secret_number =
1715 inp->sctp_ep.current_secret_number;
1716 inp->sctp_ep.current_secret_number++;
1717 if (inp->sctp_ep.current_secret_number >=
1718 SCTP_HOW_MANY_SECRETS) {
1719 inp->sctp_ep.current_secret_number = 0;
1721 secret = (int)inp->sctp_ep.current_secret_number;
1722 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1723 inp->sctp_ep.secret_key[secret][i] =
1724 sctp_select_initial_TSN(&inp->sctp_ep);
1726 SCTP_INP_WUNLOCK(inp);
1727 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1731 case SCTP_TIMER_TYPE_PATHMTURAISE:
1732 if ((stcb == NULL) || (inp == NULL)) {
1735 SCTP_STAT_INCR(sctps_timopathmtu);
1736 sctp_pathmtu_timer(inp, stcb, net);
1739 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1740 if ((stcb == NULL) || (inp == NULL)) {
1743 if (sctp_shutdownack_timer(inp, stcb, net)) {
1744 /* no need to unlock on tcb its gone */
1747 SCTP_STAT_INCR(sctps_timoshutdownack);
1748 stcb->asoc.timoshutdownack++;
1749 #ifdef SCTP_AUDITING_ENABLED
1750 sctp_auditing(4, inp, stcb, net);
1752 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1754 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1755 if ((stcb == NULL) || (inp == NULL)) {
1758 SCTP_STAT_INCR(sctps_timoshutdownguard);
1759 sctp_abort_an_association(inp, stcb, NULL, SCTP_SO_NOT_LOCKED);
1760 /* no need to unlock on tcb its gone */
1763 case SCTP_TIMER_TYPE_STRRESET:
1764 if ((stcb == NULL) || (inp == NULL)) {
1767 if (sctp_strreset_timer(inp, stcb, net)) {
1768 /* no need to unlock on tcb its gone */
1771 SCTP_STAT_INCR(sctps_timostrmrst);
1772 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1774 case SCTP_TIMER_TYPE_ASCONF:
1775 if ((stcb == NULL) || (inp == NULL)) {
1778 if (sctp_asconf_timer(inp, stcb, net)) {
1779 /* no need to unlock on tcb its gone */
1782 SCTP_STAT_INCR(sctps_timoasconf);
1783 #ifdef SCTP_AUDITING_ENABLED
1784 sctp_auditing(4, inp, stcb, net);
1786 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1788 case SCTP_TIMER_TYPE_PRIM_DELETED:
1789 if ((stcb == NULL) || (inp == NULL)) {
1792 sctp_delete_prim_timer(inp, stcb, net);
1793 SCTP_STAT_INCR(sctps_timodelprim);
1796 case SCTP_TIMER_TYPE_AUTOCLOSE:
1797 if ((stcb == NULL) || (inp == NULL)) {
1800 SCTP_STAT_INCR(sctps_timoautoclose);
1801 sctp_autoclose_timer(inp, stcb, net);
1802 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1805 case SCTP_TIMER_TYPE_ASOCKILL:
1806 if ((stcb == NULL) || (inp == NULL)) {
1809 SCTP_STAT_INCR(sctps_timoassockill);
1810 /* Can we free it yet? */
1811 SCTP_INP_DECR_REF(inp);
1812 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, 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, SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1822 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1823 SCTP_SOCKET_UNLOCK(so, 1);
1826 * free asoc, always unlocks (or destroy's) so prevent
1827 * duplicate unlock or unlock of a free mtx :-0
1831 case SCTP_TIMER_TYPE_INPKILL:
1832 SCTP_STAT_INCR(sctps_timoinpkill);
1837 * special case, take away our increment since WE are the
1840 SCTP_INP_DECR_REF(inp);
1841 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1842 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1843 SCTP_CALLED_FROM_INPKILL_TIMER);
1847 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1851 #ifdef SCTP_AUDITING_ENABLED
1852 sctp_audit_log(0xF1, (uint8_t) tmr->type);
1854 sctp_auditing(5, inp, stcb, net);
1856 if ((did_output) && stcb) {
1858 * Now we need to clean up the control chunk chain if an
1859 * ECNE is on it. It must be marked as UNSENT again so next
1860 * call will continue to send it until such time that we get
1861 * a CWR, to remove it. It is, however, less likely that we
1862 * will find a ecn echo on the chain though.
1864 sctp_fix_ecn_echo(&stcb->asoc);
1868 SCTP_TCB_UNLOCK(stcb);
1872 SCTP_INP_DECR_REF(inp);
1875 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type %d)\n",
1881 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1882 struct sctp_nets *net)
1885 struct sctp_timer *tmr;
1887 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1892 SCTP_TCB_LOCK_ASSERT(stcb);
1895 case SCTP_TIMER_TYPE_ZERO_COPY:
1896 tmr = &inp->sctp_ep.zero_copy_timer;
1897 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1899 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1900 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1901 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1903 case SCTP_TIMER_TYPE_ADDR_WQ:
1904 /* Only 1 tick away :-) */
1905 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1906 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1908 case SCTP_TIMER_TYPE_SEND:
1909 /* Here we use the RTO timer */
1913 if ((stcb == NULL) || (net == NULL)) {
1916 tmr = &net->rxt_timer;
1917 if (net->RTO == 0) {
1918 rto_val = stcb->asoc.initial_rto;
1922 to_ticks = MSEC_TO_TICKS(rto_val);
1925 case SCTP_TIMER_TYPE_INIT:
1927 * Here we use the INIT timer default usually about 1
1930 if ((stcb == NULL) || (net == NULL)) {
1933 tmr = &net->rxt_timer;
1934 if (net->RTO == 0) {
1935 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1937 to_ticks = MSEC_TO_TICKS(net->RTO);
1940 case SCTP_TIMER_TYPE_RECV:
1942 * Here we use the Delayed-Ack timer value from the inp
1943 * ususually about 200ms.
1948 tmr = &stcb->asoc.dack_timer;
1949 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
1951 case SCTP_TIMER_TYPE_SHUTDOWN:
1952 /* Here we use the RTO of the destination. */
1953 if ((stcb == NULL) || (net == NULL)) {
1956 if (net->RTO == 0) {
1957 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1959 to_ticks = MSEC_TO_TICKS(net->RTO);
1961 tmr = &net->rxt_timer;
1963 case SCTP_TIMER_TYPE_HEARTBEAT:
1965 * the net is used here so that we can add in the RTO. Even
1966 * though we use a different timer. We also add the HB timer
1967 * PLUS a random jitter.
1969 if ((stcb == NULL) || (net == NULL)) {
1975 if ((net->dest_state & SCTP_ADDR_NOHB) &&
1976 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
1979 if (net->RTO == 0) {
1980 to_ticks = stcb->asoc.initial_rto;
1982 to_ticks = net->RTO;
1984 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
1985 jitter = rndval % to_ticks;
1986 if (jitter >= (to_ticks >> 1)) {
1987 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
1989 to_ticks = to_ticks - jitter;
1991 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
1992 !(net->dest_state & SCTP_ADDR_PF)) {
1993 to_ticks += net->heart_beat_delay;
1996 * Now we must convert the to_ticks that are now in
1999 to_ticks = MSEC_TO_TICKS(to_ticks);
2000 tmr = &net->hb_timer;
2003 case SCTP_TIMER_TYPE_COOKIE:
2005 * Here we can use the RTO timer from the network since one
2006 * RTT was compelete. If a retran happened then we will be
2007 * using the RTO initial value.
2009 if ((stcb == NULL) || (net == NULL)) {
2012 if (net->RTO == 0) {
2013 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2015 to_ticks = MSEC_TO_TICKS(net->RTO);
2017 tmr = &net->rxt_timer;
2019 case SCTP_TIMER_TYPE_NEWCOOKIE:
2021 * nothing needed but the endpoint here ususually about 60
2024 tmr = &inp->sctp_ep.signature_change;
2025 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2027 case SCTP_TIMER_TYPE_ASOCKILL:
2031 tmr = &stcb->asoc.strreset_timer;
2032 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2034 case SCTP_TIMER_TYPE_INPKILL:
2036 * The inp is setup to die. We re-use the signature_chage
2037 * timer since that has stopped and we are in the GONE
2040 tmr = &inp->sctp_ep.signature_change;
2041 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2043 case SCTP_TIMER_TYPE_PATHMTURAISE:
2045 * Here we use the value found in the EP for PMTU ususually
2048 if ((stcb == NULL) || (net == NULL)) {
2051 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2054 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2055 tmr = &net->pmtu_timer;
2057 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2058 /* Here we use the RTO of the destination */
2059 if ((stcb == NULL) || (net == NULL)) {
2062 if (net->RTO == 0) {
2063 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2065 to_ticks = MSEC_TO_TICKS(net->RTO);
2067 tmr = &net->rxt_timer;
2069 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2071 * Here we use the endpoints shutdown guard timer usually
2077 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2078 tmr = &stcb->asoc.shut_guard_timer;
2080 case SCTP_TIMER_TYPE_STRRESET:
2082 * Here the timer comes from the stcb but its value is from
2085 if ((stcb == NULL) || (net == NULL)) {
2088 if (net->RTO == 0) {
2089 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2091 to_ticks = MSEC_TO_TICKS(net->RTO);
2093 tmr = &stcb->asoc.strreset_timer;
2095 case SCTP_TIMER_TYPE_ASCONF:
2097 * Here the timer comes from the stcb but its value is from
2100 if ((stcb == NULL) || (net == NULL)) {
2103 if (net->RTO == 0) {
2104 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2106 to_ticks = MSEC_TO_TICKS(net->RTO);
2108 tmr = &stcb->asoc.asconf_timer;
2110 case SCTP_TIMER_TYPE_PRIM_DELETED:
2111 if ((stcb == NULL) || (net != NULL)) {
2114 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2115 tmr = &stcb->asoc.delete_prim_timer;
2117 case SCTP_TIMER_TYPE_AUTOCLOSE:
2121 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2123 * Really an error since stcb is NOT set to
2128 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2129 tmr = &stcb->asoc.autoclose_timer;
2132 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2133 __FUNCTION__, t_type);
2137 if ((to_ticks <= 0) || (tmr == NULL)) {
2138 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2139 __FUNCTION__, t_type, to_ticks, (void *)tmr);
2142 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2144 * we do NOT allow you to have it already running. if it is
2145 * we leave the current one up unchanged
2149 /* At this point we can proceed */
2150 if (t_type == SCTP_TIMER_TYPE_SEND) {
2151 stcb->asoc.num_send_timers_up++;
2153 tmr->stopped_from = 0;
2155 tmr->ep = (void *)inp;
2156 tmr->tcb = (void *)stcb;
2157 tmr->net = (void *)net;
2158 tmr->self = (void *)tmr;
2159 tmr->vnet = (void *)curvnet;
2160 tmr->ticks = sctp_get_tick_count();
2161 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2166 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2167 struct sctp_nets *net, uint32_t from)
2169 struct sctp_timer *tmr;
2171 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2177 SCTP_TCB_LOCK_ASSERT(stcb);
2180 case SCTP_TIMER_TYPE_ZERO_COPY:
2181 tmr = &inp->sctp_ep.zero_copy_timer;
2183 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2184 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2186 case SCTP_TIMER_TYPE_ADDR_WQ:
2187 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2189 case SCTP_TIMER_TYPE_SEND:
2190 if ((stcb == NULL) || (net == NULL)) {
2193 tmr = &net->rxt_timer;
2195 case SCTP_TIMER_TYPE_INIT:
2196 if ((stcb == NULL) || (net == NULL)) {
2199 tmr = &net->rxt_timer;
2201 case SCTP_TIMER_TYPE_RECV:
2205 tmr = &stcb->asoc.dack_timer;
2207 case SCTP_TIMER_TYPE_SHUTDOWN:
2208 if ((stcb == NULL) || (net == NULL)) {
2211 tmr = &net->rxt_timer;
2213 case SCTP_TIMER_TYPE_HEARTBEAT:
2214 if ((stcb == NULL) || (net == NULL)) {
2217 tmr = &net->hb_timer;
2219 case SCTP_TIMER_TYPE_COOKIE:
2220 if ((stcb == NULL) || (net == NULL)) {
2223 tmr = &net->rxt_timer;
2225 case SCTP_TIMER_TYPE_NEWCOOKIE:
2226 /* nothing needed but the endpoint here */
2227 tmr = &inp->sctp_ep.signature_change;
2229 * We re-use the newcookie timer for the INP kill timer. We
2230 * must assure that we do not kill it by accident.
2233 case SCTP_TIMER_TYPE_ASOCKILL:
2235 * Stop the asoc kill timer.
2240 tmr = &stcb->asoc.strreset_timer;
2243 case SCTP_TIMER_TYPE_INPKILL:
2245 * The inp is setup to die. We re-use the signature_chage
2246 * timer since that has stopped and we are in the GONE
2249 tmr = &inp->sctp_ep.signature_change;
2251 case SCTP_TIMER_TYPE_PATHMTURAISE:
2252 if ((stcb == NULL) || (net == NULL)) {
2255 tmr = &net->pmtu_timer;
2257 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2258 if ((stcb == NULL) || (net == NULL)) {
2261 tmr = &net->rxt_timer;
2263 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2267 tmr = &stcb->asoc.shut_guard_timer;
2269 case SCTP_TIMER_TYPE_STRRESET:
2273 tmr = &stcb->asoc.strreset_timer;
2275 case SCTP_TIMER_TYPE_ASCONF:
2279 tmr = &stcb->asoc.asconf_timer;
2281 case SCTP_TIMER_TYPE_PRIM_DELETED:
2285 tmr = &stcb->asoc.delete_prim_timer;
2287 case SCTP_TIMER_TYPE_AUTOCLOSE:
2291 tmr = &stcb->asoc.autoclose_timer;
2294 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2295 __FUNCTION__, t_type);
2301 if ((tmr->type != t_type) && tmr->type) {
2303 * Ok we have a timer that is under joint use. Cookie timer
2304 * per chance with the SEND timer. We therefore are NOT
2305 * running the timer that the caller wants stopped. So just
2310 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2311 stcb->asoc.num_send_timers_up--;
2312 if (stcb->asoc.num_send_timers_up < 0) {
2313 stcb->asoc.num_send_timers_up = 0;
2317 tmr->stopped_from = from;
2318 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2323 sctp_calculate_len(struct mbuf *m)
2330 tlen += SCTP_BUF_LEN(at);
2331 at = SCTP_BUF_NEXT(at);
2337 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2338 struct sctp_association *asoc, uint32_t mtu)
2341 * Reset the P-MTU size on this association, this involves changing
2342 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2343 * allow the DF flag to be cleared.
2345 struct sctp_tmit_chunk *chk;
2346 unsigned int eff_mtu, ovh;
2348 asoc->smallest_mtu = mtu;
2349 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2350 ovh = SCTP_MIN_OVERHEAD;
2352 ovh = SCTP_MIN_V4_OVERHEAD;
2354 eff_mtu = mtu - ovh;
2355 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2356 if (chk->send_size > eff_mtu) {
2357 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2360 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2361 if (chk->send_size > eff_mtu) {
2362 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2369 * given an association and starting time of the current RTT period return
2370 * RTO in number of msecs net should point to the current network
2374 sctp_calculate_rto(struct sctp_tcb *stcb,
2375 struct sctp_association *asoc,
2376 struct sctp_nets *net,
2377 struct timeval *told,
2378 int safe, int rtt_from_sack)
2381 * given an association and the starting time of the current RTT
2382 * period (in value1/value2) return RTO in number of msecs.
2384 int32_t rtt; /* RTT in ms */
2386 int first_measure = 0;
2387 struct timeval now, then, *old;
2389 /* Copy it out for sparc64 */
2390 if (safe == sctp_align_unsafe_makecopy) {
2392 memcpy(&then, told, sizeof(struct timeval));
2393 } else if (safe == sctp_align_safe_nocopy) {
2397 SCTP_PRINTF("Huh, bad rto calc call\n");
2400 /************************/
2401 /* 1. calculate new RTT */
2402 /************************/
2403 /* get the current time */
2404 if (stcb->asoc.use_precise_time) {
2405 (void)SCTP_GETPTIME_TIMEVAL(&now);
2407 (void)SCTP_GETTIME_TIMEVAL(&now);
2409 timevalsub(&now, old);
2410 /* store the current RTT in us */
2411 net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec +
2412 (uint64_t) now.tv_usec;
2414 /* compute rtt in ms */
2415 rtt = (int32_t) (net->rtt / 1000);
2416 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2418 * Tell the CC module that a new update has just occurred
2421 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2424 * Do we need to determine the lan? We do this only on sacks i.e.
2425 * RTT being determined from data not non-data (HB/INIT->INITACK).
2427 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2428 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2429 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2430 net->lan_type = SCTP_LAN_INTERNET;
2432 net->lan_type = SCTP_LAN_LOCAL;
2435 /***************************/
2436 /* 2. update RTTVAR & SRTT */
2437 /***************************/
2439 * Compute the scaled average lastsa and the
2440 * scaled variance lastsv as described in van Jacobson
2441 * Paper "Congestion Avoidance and Control", Annex A.
2443 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2444 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2446 if (net->RTO_measured) {
2447 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2452 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2454 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2455 rto_logging(net, SCTP_LOG_RTTVAR);
2458 /* First RTO measurment */
2459 net->RTO_measured = 1;
2461 net->lastsa = rtt << SCTP_RTT_SHIFT;
2462 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2463 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2464 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2467 if (net->lastsv == 0) {
2468 net->lastsv = SCTP_CLOCK_GRANULARITY;
2470 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2471 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2472 (stcb->asoc.sat_network_lockout == 0)) {
2473 stcb->asoc.sat_network = 1;
2474 } else if ((!first_measure) && stcb->asoc.sat_network) {
2475 stcb->asoc.sat_network = 0;
2476 stcb->asoc.sat_network_lockout = 1;
2478 /* bound it, per C6/C7 in Section 5.3.1 */
2479 if (new_rto < stcb->asoc.minrto) {
2480 new_rto = stcb->asoc.minrto;
2482 if (new_rto > stcb->asoc.maxrto) {
2483 new_rto = stcb->asoc.maxrto;
2485 /* we are now returning the RTO */
2490 * return a pointer to a contiguous piece of data from the given mbuf chain
2491 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2492 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2493 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2496 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
2502 if ((off < 0) || (len <= 0))
2505 /* find the desired start location */
2506 while ((m != NULL) && (off > 0)) {
2507 if (off < SCTP_BUF_LEN(m))
2509 off -= SCTP_BUF_LEN(m);
2510 m = SCTP_BUF_NEXT(m);
2515 /* is the current mbuf large enough (eg. contiguous)? */
2516 if ((SCTP_BUF_LEN(m) - off) >= len) {
2517 return (mtod(m, caddr_t)+off);
2519 /* else, it spans more than one mbuf, so save a temp copy... */
2520 while ((m != NULL) && (len > 0)) {
2521 count = min(SCTP_BUF_LEN(m) - off, len);
2522 bcopy(mtod(m, caddr_t)+off, ptr, count);
2526 m = SCTP_BUF_NEXT(m);
2528 if ((m == NULL) && (len > 0))
2531 return ((caddr_t)in_ptr);
2537 struct sctp_paramhdr *
2538 sctp_get_next_param(struct mbuf *m,
2540 struct sctp_paramhdr *pull,
2543 /* This just provides a typed signature to Peter's Pull routine */
2544 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2550 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2552 struct mbuf *m_last;
2558 if (padlen <= M_TRAILINGSPACE(m)) {
2560 * The easy way. We hope the majority of the time we hit
2565 /* Hard way we must grow the mbuf chain */
2566 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2567 if (m_last == NULL) {
2570 SCTP_BUF_LEN(m_last) = 0;
2571 SCTP_BUF_NEXT(m_last) = NULL;
2572 SCTP_BUF_NEXT(m) = m_last;
2574 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2575 SCTP_BUF_LEN(m_last) += padlen;
2576 memset(dp, 0, padlen);
2581 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2583 /* find the last mbuf in chain and pad it */
2586 if (last_mbuf != NULL) {
2587 return (sctp_add_pad_tombuf(last_mbuf, padval));
2589 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2590 if (SCTP_BUF_NEXT(m_at) == NULL) {
2591 return (sctp_add_pad_tombuf(m_at, padval));
2599 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2600 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2601 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2606 struct mbuf *m_notify;
2607 struct sctp_assoc_change *sac;
2608 struct sctp_queued_to_read *control;
2609 size_t notif_len, abort_len;
2612 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2617 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2618 notif_len = sizeof(struct sctp_assoc_change);
2619 if (abort != NULL) {
2620 abort_len = ntohs(abort->ch.chunk_length);
2624 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2625 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2626 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2627 notif_len += abort_len;
2629 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2630 if (m_notify == NULL) {
2631 /* Retry with smaller value. */
2632 notif_len = sizeof(struct sctp_assoc_change);
2633 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2634 if (m_notify == NULL) {
2638 SCTP_BUF_NEXT(m_notify) = NULL;
2639 sac = mtod(m_notify, struct sctp_assoc_change *);
2640 memset(sac, 0, notif_len);
2641 sac->sac_type = SCTP_ASSOC_CHANGE;
2643 sac->sac_length = sizeof(struct sctp_assoc_change);
2644 sac->sac_state = state;
2645 sac->sac_error = error;
2646 /* XXX verify these stream counts */
2647 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2648 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2649 sac->sac_assoc_id = sctp_get_associd(stcb);
2650 if (notif_len > sizeof(struct sctp_assoc_change)) {
2651 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2653 if (stcb->asoc.prsctp_supported == 1) {
2654 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2656 if (stcb->asoc.auth_supported == 1) {
2657 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2659 if (stcb->asoc.asconf_supported == 1) {
2660 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2662 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2663 if (stcb->asoc.reconfig_supported == 1) {
2664 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2666 sac->sac_length += i;
2667 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2668 memcpy(sac->sac_info, abort, abort_len);
2669 sac->sac_length += abort_len;
2672 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2673 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2674 0, 0, stcb->asoc.context, 0, 0, 0,
2676 if (control != NULL) {
2677 control->length = SCTP_BUF_LEN(m_notify);
2678 /* not that we need this */
2679 control->tail_mbuf = m_notify;
2680 control->spec_flags = M_NOTIFICATION;
2681 sctp_add_to_readq(stcb->sctp_ep, stcb,
2683 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2686 sctp_m_freem(m_notify);
2690 * For 1-to-1 style sockets, we send up and error when an ABORT
2694 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2695 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2696 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2697 SOCK_LOCK(stcb->sctp_socket);
2699 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2700 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2701 stcb->sctp_socket->so_error = ECONNREFUSED;
2703 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2704 stcb->sctp_socket->so_error = ECONNRESET;
2707 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2708 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2709 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2710 stcb->sctp_socket->so_error = ETIMEDOUT;
2712 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2713 stcb->sctp_socket->so_error = ECONNABORTED;
2717 /* Wake ANY sleepers */
2718 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2719 so = SCTP_INP_SO(stcb->sctp_ep);
2721 atomic_add_int(&stcb->asoc.refcnt, 1);
2722 SCTP_TCB_UNLOCK(stcb);
2723 SCTP_SOCKET_LOCK(so, 1);
2724 SCTP_TCB_LOCK(stcb);
2725 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2726 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2727 SCTP_SOCKET_UNLOCK(so, 1);
2732 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2733 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2734 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2735 socantrcvmore_locked(stcb->sctp_socket);
2737 sorwakeup(stcb->sctp_socket);
2738 sowwakeup(stcb->sctp_socket);
2739 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2741 SCTP_SOCKET_UNLOCK(so, 1);
2747 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2748 struct sockaddr *sa, uint32_t error, int so_locked
2749 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2754 struct mbuf *m_notify;
2755 struct sctp_paddr_change *spc;
2756 struct sctp_queued_to_read *control;
2758 if ((stcb == NULL) ||
2759 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2760 /* event not enabled */
2763 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2764 if (m_notify == NULL)
2766 SCTP_BUF_LEN(m_notify) = 0;
2767 spc = mtod(m_notify, struct sctp_paddr_change *);
2768 memset(spc, 0, sizeof(struct sctp_paddr_change));
2769 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2771 spc->spc_length = sizeof(struct sctp_paddr_change);
2772 switch (sa->sa_family) {
2776 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
2777 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
2778 (struct sockaddr_in6 *)&spc->spc_aaddr);
2780 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2783 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2790 struct sockaddr_in6 *sin6;
2792 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2794 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2795 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2796 if (sin6->sin6_scope_id == 0) {
2797 /* recover scope_id for user */
2798 (void)sa6_recoverscope(sin6);
2800 /* clear embedded scope_id for user */
2801 in6_clearscope(&sin6->sin6_addr);
2811 spc->spc_state = state;
2812 spc->spc_error = error;
2813 spc->spc_assoc_id = sctp_get_associd(stcb);
2815 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2816 SCTP_BUF_NEXT(m_notify) = NULL;
2818 /* append to socket */
2819 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2820 0, 0, stcb->asoc.context, 0, 0, 0,
2822 if (control == NULL) {
2824 sctp_m_freem(m_notify);
2827 control->length = SCTP_BUF_LEN(m_notify);
2828 control->spec_flags = M_NOTIFICATION;
2829 /* not that we need this */
2830 control->tail_mbuf = m_notify;
2831 sctp_add_to_readq(stcb->sctp_ep, stcb,
2833 &stcb->sctp_socket->so_rcv, 1,
2834 SCTP_READ_LOCK_NOT_HELD,
2840 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2841 struct sctp_tmit_chunk *chk, int so_locked
2842 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2847 struct mbuf *m_notify;
2848 struct sctp_send_failed *ssf;
2849 struct sctp_send_failed_event *ssfe;
2850 struct sctp_queued_to_read *control;
2853 if ((stcb == NULL) ||
2854 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2855 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2856 /* event not enabled */
2859 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2860 length = sizeof(struct sctp_send_failed_event);
2862 length = sizeof(struct sctp_send_failed);
2864 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2865 if (m_notify == NULL)
2868 SCTP_BUF_LEN(m_notify) = 0;
2869 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2870 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2871 memset(ssfe, 0, length);
2872 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2874 ssfe->ssfe_flags = SCTP_DATA_SENT;
2876 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2878 length += chk->send_size;
2879 length -= sizeof(struct sctp_data_chunk);
2880 ssfe->ssfe_length = length;
2881 ssfe->ssfe_error = error;
2882 /* not exactly what the user sent in, but should be close :) */
2883 ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number;
2884 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2885 ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype;
2886 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2887 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2888 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2889 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2891 ssf = mtod(m_notify, struct sctp_send_failed *);
2892 memset(ssf, 0, length);
2893 ssf->ssf_type = SCTP_SEND_FAILED;
2895 ssf->ssf_flags = SCTP_DATA_SENT;
2897 ssf->ssf_flags = SCTP_DATA_UNSENT;
2899 length += chk->send_size;
2900 length -= sizeof(struct sctp_data_chunk);
2901 ssf->ssf_length = length;
2902 ssf->ssf_error = error;
2903 /* not exactly what the user sent in, but should be close :) */
2904 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2905 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2906 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2907 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2908 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2909 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2910 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2911 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2912 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2916 * trim off the sctp chunk header(it should be there)
2918 if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
2919 m_adj(chk->data, sizeof(struct sctp_data_chunk));
2920 sctp_mbuf_crush(chk->data);
2921 chk->send_size -= sizeof(struct sctp_data_chunk);
2924 SCTP_BUF_NEXT(m_notify) = chk->data;
2925 /* Steal off the mbuf */
2928 * For this case, we check the actual socket buffer, since the assoc
2929 * is going away we don't want to overfill the socket buffer for a
2932 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
2933 sctp_m_freem(m_notify);
2936 /* append to socket */
2937 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2938 0, 0, stcb->asoc.context, 0, 0, 0,
2940 if (control == NULL) {
2942 sctp_m_freem(m_notify);
2945 control->spec_flags = M_NOTIFICATION;
2946 sctp_add_to_readq(stcb->sctp_ep, stcb,
2948 &stcb->sctp_socket->so_rcv, 1,
2949 SCTP_READ_LOCK_NOT_HELD,
2955 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
2956 struct sctp_stream_queue_pending *sp, int so_locked
2957 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2962 struct mbuf *m_notify;
2963 struct sctp_send_failed *ssf;
2964 struct sctp_send_failed_event *ssfe;
2965 struct sctp_queued_to_read *control;
2968 if ((stcb == NULL) ||
2969 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2970 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2971 /* event not enabled */
2974 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2975 length = sizeof(struct sctp_send_failed_event);
2977 length = sizeof(struct sctp_send_failed);
2979 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2980 if (m_notify == NULL) {
2984 SCTP_BUF_LEN(m_notify) = 0;
2985 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2986 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2987 memset(ssfe, 0, length);
2988 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2989 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2990 length += sp->length;
2991 ssfe->ssfe_length = length;
2992 ssfe->ssfe_error = error;
2993 /* not exactly what the user sent in, but should be close :) */
2994 ssfe->ssfe_info.snd_sid = sp->stream;
2995 if (sp->some_taken) {
2996 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
2998 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3000 ssfe->ssfe_info.snd_ppid = sp->ppid;
3001 ssfe->ssfe_info.snd_context = sp->context;
3002 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3003 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3004 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
3006 ssf = mtod(m_notify, struct sctp_send_failed *);
3007 memset(ssf, 0, length);
3008 ssf->ssf_type = SCTP_SEND_FAILED;
3009 ssf->ssf_flags = SCTP_DATA_UNSENT;
3010 length += sp->length;
3011 ssf->ssf_length = length;
3012 ssf->ssf_error = error;
3013 /* not exactly what the user sent in, but should be close :) */
3014 ssf->ssf_info.sinfo_stream = sp->stream;
3015 ssf->ssf_info.sinfo_ssn = 0;
3016 if (sp->some_taken) {
3017 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3019 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3021 ssf->ssf_info.sinfo_ppid = sp->ppid;
3022 ssf->ssf_info.sinfo_context = sp->context;
3023 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3024 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3025 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
3027 SCTP_BUF_NEXT(m_notify) = sp->data;
3029 /* Steal off the mbuf */
3032 * For this case, we check the actual socket buffer, since the assoc
3033 * is going away we don't want to overfill the socket buffer for a
3036 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3037 sctp_m_freem(m_notify);
3040 /* append to socket */
3041 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3042 0, 0, stcb->asoc.context, 0, 0, 0,
3044 if (control == NULL) {
3046 sctp_m_freem(m_notify);
3049 control->spec_flags = M_NOTIFICATION;
3050 sctp_add_to_readq(stcb->sctp_ep, stcb,
3052 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3058 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3060 struct mbuf *m_notify;
3061 struct sctp_adaptation_event *sai;
3062 struct sctp_queued_to_read *control;
3064 if ((stcb == NULL) ||
3065 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3066 /* event not enabled */
3069 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3070 if (m_notify == NULL)
3073 SCTP_BUF_LEN(m_notify) = 0;
3074 sai = mtod(m_notify, struct sctp_adaptation_event *);
3075 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3076 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3078 sai->sai_length = sizeof(struct sctp_adaptation_event);
3079 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3080 sai->sai_assoc_id = sctp_get_associd(stcb);
3082 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3083 SCTP_BUF_NEXT(m_notify) = NULL;
3085 /* append to socket */
3086 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3087 0, 0, stcb->asoc.context, 0, 0, 0,
3089 if (control == NULL) {
3091 sctp_m_freem(m_notify);
3094 control->length = SCTP_BUF_LEN(m_notify);
3095 control->spec_flags = M_NOTIFICATION;
3096 /* not that we need this */
3097 control->tail_mbuf = m_notify;
3098 sctp_add_to_readq(stcb->sctp_ep, stcb,
3100 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3103 /* This always must be called with the read-queue LOCKED in the INP */
3105 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3106 uint32_t val, int so_locked
3107 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3112 struct mbuf *m_notify;
3113 struct sctp_pdapi_event *pdapi;
3114 struct sctp_queued_to_read *control;
3117 if ((stcb == NULL) ||
3118 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3119 /* event not enabled */
3122 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3125 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3126 if (m_notify == NULL)
3129 SCTP_BUF_LEN(m_notify) = 0;
3130 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3131 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3132 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3133 pdapi->pdapi_flags = 0;
3134 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3135 pdapi->pdapi_indication = error;
3136 pdapi->pdapi_stream = (val >> 16);
3137 pdapi->pdapi_seq = (val & 0x0000ffff);
3138 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3140 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3141 SCTP_BUF_NEXT(m_notify) = NULL;
3142 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3143 0, 0, stcb->asoc.context, 0, 0, 0,
3145 if (control == NULL) {
3147 sctp_m_freem(m_notify);
3150 control->spec_flags = M_NOTIFICATION;
3151 control->length = SCTP_BUF_LEN(m_notify);
3152 /* not that we need this */
3153 control->tail_mbuf = m_notify;
3154 control->held_length = 0;
3155 control->length = 0;
3156 sb = &stcb->sctp_socket->so_rcv;
3157 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3158 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3160 sctp_sballoc(stcb, sb, m_notify);
3161 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3162 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3164 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3165 control->end_added = 1;
3166 if (stcb->asoc.control_pdapi)
3167 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3169 /* we really should not see this case */
3170 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3172 if (stcb->sctp_ep && stcb->sctp_socket) {
3173 /* This should always be the case */
3174 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3177 so = SCTP_INP_SO(stcb->sctp_ep);
3179 atomic_add_int(&stcb->asoc.refcnt, 1);
3180 SCTP_TCB_UNLOCK(stcb);
3181 SCTP_SOCKET_LOCK(so, 1);
3182 SCTP_TCB_LOCK(stcb);
3183 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3184 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3185 SCTP_SOCKET_UNLOCK(so, 1);
3190 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3191 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3193 SCTP_SOCKET_UNLOCK(so, 1);
3200 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3202 struct mbuf *m_notify;
3203 struct sctp_shutdown_event *sse;
3204 struct sctp_queued_to_read *control;
3207 * For TCP model AND UDP connected sockets we will send an error up
3208 * when an SHUTDOWN completes
3210 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3211 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3212 /* mark socket closed for read/write and wakeup! */
3213 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3216 so = SCTP_INP_SO(stcb->sctp_ep);
3217 atomic_add_int(&stcb->asoc.refcnt, 1);
3218 SCTP_TCB_UNLOCK(stcb);
3219 SCTP_SOCKET_LOCK(so, 1);
3220 SCTP_TCB_LOCK(stcb);
3221 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3222 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3223 SCTP_SOCKET_UNLOCK(so, 1);
3227 socantsendmore(stcb->sctp_socket);
3228 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3229 SCTP_SOCKET_UNLOCK(so, 1);
3232 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3233 /* event not enabled */
3236 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3237 if (m_notify == NULL)
3240 sse = mtod(m_notify, struct sctp_shutdown_event *);
3241 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3242 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3244 sse->sse_length = sizeof(struct sctp_shutdown_event);
3245 sse->sse_assoc_id = sctp_get_associd(stcb);
3247 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3248 SCTP_BUF_NEXT(m_notify) = NULL;
3250 /* append to socket */
3251 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3252 0, 0, stcb->asoc.context, 0, 0, 0,
3254 if (control == NULL) {
3256 sctp_m_freem(m_notify);
3259 control->spec_flags = M_NOTIFICATION;
3260 control->length = SCTP_BUF_LEN(m_notify);
3261 /* not that we need this */
3262 control->tail_mbuf = m_notify;
3263 sctp_add_to_readq(stcb->sctp_ep, stcb,
3265 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3269 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3271 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3276 struct mbuf *m_notify;
3277 struct sctp_sender_dry_event *event;
3278 struct sctp_queued_to_read *control;
3280 if ((stcb == NULL) ||
3281 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3282 /* event not enabled */
3285 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3286 if (m_notify == NULL) {
3290 SCTP_BUF_LEN(m_notify) = 0;
3291 event = mtod(m_notify, struct sctp_sender_dry_event *);
3292 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3293 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3294 event->sender_dry_flags = 0;
3295 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3296 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3298 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3299 SCTP_BUF_NEXT(m_notify) = NULL;
3301 /* append to socket */
3302 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3303 0, 0, stcb->asoc.context, 0, 0, 0,
3305 if (control == NULL) {
3307 sctp_m_freem(m_notify);
3310 control->length = SCTP_BUF_LEN(m_notify);
3311 control->spec_flags = M_NOTIFICATION;
3312 /* not that we need this */
3313 control->tail_mbuf = m_notify;
3314 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3315 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3320 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3322 struct mbuf *m_notify;
3323 struct sctp_queued_to_read *control;
3324 struct sctp_stream_change_event *stradd;
3326 if ((stcb == NULL) ||
3327 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3328 /* event not enabled */
3331 if ((stcb->asoc.peer_req_out) && flag) {
3332 /* Peer made the request, don't tell the local user */
3333 stcb->asoc.peer_req_out = 0;
3336 stcb->asoc.peer_req_out = 0;
3337 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3338 if (m_notify == NULL)
3341 SCTP_BUF_LEN(m_notify) = 0;
3342 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3343 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3344 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3345 stradd->strchange_flags = flag;
3346 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3347 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3348 stradd->strchange_instrms = numberin;
3349 stradd->strchange_outstrms = numberout;
3350 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3351 SCTP_BUF_NEXT(m_notify) = NULL;
3352 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3354 sctp_m_freem(m_notify);
3357 /* append to socket */
3358 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3359 0, 0, stcb->asoc.context, 0, 0, 0,
3361 if (control == NULL) {
3363 sctp_m_freem(m_notify);
3366 control->spec_flags = M_NOTIFICATION;
3367 control->length = SCTP_BUF_LEN(m_notify);
3368 /* not that we need this */
3369 control->tail_mbuf = m_notify;
3370 sctp_add_to_readq(stcb->sctp_ep, stcb,
3372 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3376 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3378 struct mbuf *m_notify;
3379 struct sctp_queued_to_read *control;
3380 struct sctp_assoc_reset_event *strasoc;
3382 if ((stcb == NULL) ||
3383 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3384 /* event not enabled */
3387 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3388 if (m_notify == NULL)
3391 SCTP_BUF_LEN(m_notify) = 0;
3392 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3393 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3394 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3395 strasoc->assocreset_flags = flag;
3396 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3397 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3398 strasoc->assocreset_local_tsn = sending_tsn;
3399 strasoc->assocreset_remote_tsn = recv_tsn;
3400 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3401 SCTP_BUF_NEXT(m_notify) = NULL;
3402 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3404 sctp_m_freem(m_notify);
3407 /* append to socket */
3408 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3409 0, 0, stcb->asoc.context, 0, 0, 0,
3411 if (control == NULL) {
3413 sctp_m_freem(m_notify);
3416 control->spec_flags = M_NOTIFICATION;
3417 control->length = SCTP_BUF_LEN(m_notify);
3418 /* not that we need this */
3419 control->tail_mbuf = m_notify;
3420 sctp_add_to_readq(stcb->sctp_ep, stcb,
3422 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3428 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3429 int number_entries, uint16_t * list, int flag)
3431 struct mbuf *m_notify;
3432 struct sctp_queued_to_read *control;
3433 struct sctp_stream_reset_event *strreset;
3436 if ((stcb == NULL) ||
3437 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3438 /* event not enabled */
3441 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3442 if (m_notify == NULL)
3445 SCTP_BUF_LEN(m_notify) = 0;
3446 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3447 if (len > M_TRAILINGSPACE(m_notify)) {
3448 /* never enough room */
3449 sctp_m_freem(m_notify);
3452 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3453 memset(strreset, 0, len);
3454 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3455 strreset->strreset_flags = flag;
3456 strreset->strreset_length = len;
3457 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3458 if (number_entries) {
3461 for (i = 0; i < number_entries; i++) {
3462 strreset->strreset_stream_list[i] = ntohs(list[i]);
3465 SCTP_BUF_LEN(m_notify) = len;
3466 SCTP_BUF_NEXT(m_notify) = NULL;
3467 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3469 sctp_m_freem(m_notify);
3472 /* append to socket */
3473 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3474 0, 0, stcb->asoc.context, 0, 0, 0,
3476 if (control == NULL) {
3478 sctp_m_freem(m_notify);
3481 control->spec_flags = M_NOTIFICATION;
3482 control->length = SCTP_BUF_LEN(m_notify);
3483 /* not that we need this */
3484 control->tail_mbuf = m_notify;
3485 sctp_add_to_readq(stcb->sctp_ep, stcb,
3487 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3492 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3494 struct mbuf *m_notify;
3495 struct sctp_remote_error *sre;
3496 struct sctp_queued_to_read *control;
3497 size_t notif_len, chunk_len;
3499 if ((stcb == NULL) ||
3500 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3503 if (chunk != NULL) {
3504 chunk_len = ntohs(chunk->ch.chunk_length);
3508 notif_len = sizeof(struct sctp_remote_error) + chunk_len;
3509 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3510 if (m_notify == NULL) {
3511 /* Retry with smaller value. */
3512 notif_len = sizeof(struct sctp_remote_error);
3513 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3514 if (m_notify == NULL) {
3518 SCTP_BUF_NEXT(m_notify) = NULL;
3519 sre = mtod(m_notify, struct sctp_remote_error *);
3520 memset(sre, 0, notif_len);
3521 sre->sre_type = SCTP_REMOTE_ERROR;
3523 sre->sre_length = sizeof(struct sctp_remote_error);
3524 sre->sre_error = error;
3525 sre->sre_assoc_id = sctp_get_associd(stcb);
3526 if (notif_len > sizeof(struct sctp_remote_error)) {
3527 memcpy(sre->sre_data, chunk, chunk_len);
3528 sre->sre_length += chunk_len;
3530 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3531 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3532 0, 0, stcb->asoc.context, 0, 0, 0,
3534 if (control != NULL) {
3535 control->length = SCTP_BUF_LEN(m_notify);
3536 /* not that we need this */
3537 control->tail_mbuf = m_notify;
3538 control->spec_flags = M_NOTIFICATION;
3539 sctp_add_to_readq(stcb->sctp_ep, stcb,
3541 &stcb->sctp_socket->so_rcv, 1,
3542 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3544 sctp_m_freem(m_notify);
3550 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3551 uint32_t error, void *data, int so_locked
3552 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3557 if ((stcb == NULL) ||
3558 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3559 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3560 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3561 /* If the socket is gone we are out of here */
3564 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3567 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3568 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3569 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3570 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3571 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3572 /* Don't report these in front states */
3576 switch (notification) {
3577 case SCTP_NOTIFY_ASSOC_UP:
3578 if (stcb->asoc.assoc_up_sent == 0) {
3579 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3580 stcb->asoc.assoc_up_sent = 1;
3582 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3583 sctp_notify_adaptation_layer(stcb);
3585 if (stcb->asoc.auth_supported == 0) {
3586 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3590 case SCTP_NOTIFY_ASSOC_DOWN:
3591 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3593 case SCTP_NOTIFY_INTERFACE_DOWN:
3595 struct sctp_nets *net;
3597 net = (struct sctp_nets *)data;
3598 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3599 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3602 case SCTP_NOTIFY_INTERFACE_UP:
3604 struct sctp_nets *net;
3606 net = (struct sctp_nets *)data;
3607 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3608 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3611 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3613 struct sctp_nets *net;
3615 net = (struct sctp_nets *)data;
3616 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3617 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3620 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3621 sctp_notify_send_failed2(stcb, error,
3622 (struct sctp_stream_queue_pending *)data, so_locked);
3624 case SCTP_NOTIFY_SENT_DG_FAIL:
3625 sctp_notify_send_failed(stcb, 1, error,
3626 (struct sctp_tmit_chunk *)data, so_locked);
3628 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3629 sctp_notify_send_failed(stcb, 0, error,
3630 (struct sctp_tmit_chunk *)data, so_locked);
3632 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3636 val = *((uint32_t *) data);
3638 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3641 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3642 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3643 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3644 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3646 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3649 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3650 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3651 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3652 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3654 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3657 case SCTP_NOTIFY_ASSOC_RESTART:
3658 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3659 if (stcb->asoc.auth_supported == 0) {
3660 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3664 case SCTP_NOTIFY_STR_RESET_SEND:
3665 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN);
3667 case SCTP_NOTIFY_STR_RESET_RECV:
3668 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING);
3670 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3671 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3672 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3674 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3675 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3676 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3678 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3679 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3680 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3682 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3683 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3684 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3686 case SCTP_NOTIFY_ASCONF_ADD_IP:
3687 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3690 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3691 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3694 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3695 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3698 case SCTP_NOTIFY_PEER_SHUTDOWN:
3699 sctp_notify_shutdown_event(stcb);
3701 case SCTP_NOTIFY_AUTH_NEW_KEY:
3702 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3703 (uint16_t) (uintptr_t) data,
3706 case SCTP_NOTIFY_AUTH_FREE_KEY:
3707 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3708 (uint16_t) (uintptr_t) data,
3711 case SCTP_NOTIFY_NO_PEER_AUTH:
3712 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3713 (uint16_t) (uintptr_t) data,
3716 case SCTP_NOTIFY_SENDER_DRY:
3717 sctp_notify_sender_dry_event(stcb, so_locked);
3719 case SCTP_NOTIFY_REMOTE_ERROR:
3720 sctp_notify_remote_error(stcb, error, data);
3723 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3724 __FUNCTION__, notification, notification);
3730 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3731 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3736 struct sctp_association *asoc;
3737 struct sctp_stream_out *outs;
3738 struct sctp_tmit_chunk *chk, *nchk;
3739 struct sctp_stream_queue_pending *sp, *nsp;
3746 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3747 /* already being freed */
3750 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3751 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3752 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3755 /* now through all the gunk freeing chunks */
3756 if (holds_lock == 0) {
3757 SCTP_TCB_SEND_LOCK(stcb);
3759 /* sent queue SHOULD be empty */
3760 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3761 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3762 asoc->sent_queue_cnt--;
3763 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3764 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3765 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3768 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3772 if (chk->data != NULL) {
3773 sctp_free_bufspace(stcb, asoc, chk, 1);
3774 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3775 error, chk, so_locked);
3777 sctp_m_freem(chk->data);
3781 sctp_free_a_chunk(stcb, chk, so_locked);
3782 /* sa_ignore FREED_MEMORY */
3784 /* pending send queue SHOULD be empty */
3785 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3786 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3787 asoc->send_queue_cnt--;
3788 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3789 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3792 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3795 if (chk->data != NULL) {
3796 sctp_free_bufspace(stcb, asoc, chk, 1);
3797 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3798 error, chk, so_locked);
3800 sctp_m_freem(chk->data);
3804 sctp_free_a_chunk(stcb, chk, so_locked);
3805 /* sa_ignore FREED_MEMORY */
3807 for (i = 0; i < asoc->streamoutcnt; i++) {
3808 /* For each stream */
3809 outs = &asoc->strmout[i];
3810 /* clean up any sends there */
3811 asoc->locked_on_sending = NULL;
3812 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3813 asoc->stream_queue_cnt--;
3814 TAILQ_REMOVE(&outs->outqueue, sp, next);
3815 sctp_free_spbufspace(stcb, asoc, sp);
3817 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3818 error, (void *)sp, so_locked);
3820 sctp_m_freem(sp->data);
3822 sp->tail_mbuf = NULL;
3827 sctp_free_remote_addr(sp->net);
3830 /* Free the chunk */
3831 sctp_free_a_strmoq(stcb, sp, so_locked);
3832 /* sa_ignore FREED_MEMORY */
3836 if (holds_lock == 0) {
3837 SCTP_TCB_SEND_UNLOCK(stcb);
3842 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3843 struct sctp_abort_chunk *abort, int so_locked
3844 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3852 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3853 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3854 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3855 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3857 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3858 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3859 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3862 /* Tell them we lost the asoc */
3863 sctp_report_all_outbound(stcb, error, 1, so_locked);
3865 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3867 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3872 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3873 struct mbuf *m, int iphlen,
3874 struct sockaddr *src, struct sockaddr *dst,
3875 struct sctphdr *sh, struct mbuf *op_err,
3876 uint8_t mflowtype, uint32_t mflowid,
3877 uint32_t vrf_id, uint16_t port)
3881 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3888 /* We have a TCB to abort, send notification too */
3889 vtag = stcb->asoc.peer_vtag;
3890 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3891 /* get the assoc vrf id and table id */
3892 vrf_id = stcb->asoc.vrf_id;
3893 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3895 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3899 /* Ok, now lets free it */
3900 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3901 so = SCTP_INP_SO(inp);
3902 atomic_add_int(&stcb->asoc.refcnt, 1);
3903 SCTP_TCB_UNLOCK(stcb);
3904 SCTP_SOCKET_LOCK(so, 1);
3905 SCTP_TCB_LOCK(stcb);
3906 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3908 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3909 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3910 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3911 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3913 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
3914 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3915 SCTP_SOCKET_UNLOCK(so, 1);
3920 #ifdef SCTP_ASOCLOG_OF_TSNS
3922 sctp_print_out_track_log(struct sctp_tcb *stcb)
3927 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
3928 SCTP_PRINTF("IN bound TSN log-aaa\n");
3929 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
3930 SCTP_PRINTF("None rcvd\n");
3933 if (stcb->asoc.tsn_in_wrapped) {
3934 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
3935 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3936 stcb->asoc.in_tsnlog[i].tsn,
3937 stcb->asoc.in_tsnlog[i].strm,
3938 stcb->asoc.in_tsnlog[i].seq,
3939 stcb->asoc.in_tsnlog[i].flgs,
3940 stcb->asoc.in_tsnlog[i].sz);
3943 if (stcb->asoc.tsn_in_at) {
3944 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
3945 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3946 stcb->asoc.in_tsnlog[i].tsn,
3947 stcb->asoc.in_tsnlog[i].strm,
3948 stcb->asoc.in_tsnlog[i].seq,
3949 stcb->asoc.in_tsnlog[i].flgs,
3950 stcb->asoc.in_tsnlog[i].sz);
3954 SCTP_PRINTF("OUT bound TSN log-aaa\n");
3955 if ((stcb->asoc.tsn_out_at == 0) &&
3956 (stcb->asoc.tsn_out_wrapped == 0)) {
3957 SCTP_PRINTF("None sent\n");
3959 if (stcb->asoc.tsn_out_wrapped) {
3960 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
3961 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3962 stcb->asoc.out_tsnlog[i].tsn,
3963 stcb->asoc.out_tsnlog[i].strm,
3964 stcb->asoc.out_tsnlog[i].seq,
3965 stcb->asoc.out_tsnlog[i].flgs,
3966 stcb->asoc.out_tsnlog[i].sz);
3969 if (stcb->asoc.tsn_out_at) {
3970 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
3971 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3972 stcb->asoc.out_tsnlog[i].tsn,
3973 stcb->asoc.out_tsnlog[i].strm,
3974 stcb->asoc.out_tsnlog[i].seq,
3975 stcb->asoc.out_tsnlog[i].flgs,
3976 stcb->asoc.out_tsnlog[i].sz);
3985 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3986 struct mbuf *op_err,
3988 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3993 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3998 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3999 so = SCTP_INP_SO(inp);
4002 /* Got to have a TCB */
4003 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4004 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4005 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4006 SCTP_CALLED_DIRECTLY_NOCMPSET);
4011 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
4013 /* notify the ulp */
4014 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4015 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4017 /* notify the peer */
4018 sctp_send_abort_tcb(stcb, op_err, so_locked);
4019 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4020 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
4021 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4022 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4024 /* now free the asoc */
4025 #ifdef SCTP_ASOCLOG_OF_TSNS
4026 sctp_print_out_track_log(stcb);
4028 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4030 atomic_add_int(&stcb->asoc.refcnt, 1);
4031 SCTP_TCB_UNLOCK(stcb);
4032 SCTP_SOCKET_LOCK(so, 1);
4033 SCTP_TCB_LOCK(stcb);
4034 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4037 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4038 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4040 SCTP_SOCKET_UNLOCK(so, 1);
4046 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4047 struct sockaddr *src, struct sockaddr *dst,
4048 struct sctphdr *sh, struct sctp_inpcb *inp,
4050 uint8_t mflowtype, uint32_t mflowid,
4051 uint32_t vrf_id, uint16_t port)
4053 struct sctp_chunkhdr *ch, chunk_buf;
4054 unsigned int chk_length;
4055 int contains_init_chunk;
4057 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4058 /* Generate a TO address for future reference */
4059 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4060 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4061 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4062 SCTP_CALLED_DIRECTLY_NOCMPSET);
4065 contains_init_chunk = 0;
4066 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4067 sizeof(*ch), (uint8_t *) & chunk_buf);
4068 while (ch != NULL) {
4069 chk_length = ntohs(ch->chunk_length);
4070 if (chk_length < sizeof(*ch)) {
4071 /* break to abort land */
4074 switch (ch->chunk_type) {
4076 contains_init_chunk = 1;
4078 case SCTP_PACKET_DROPPED:
4079 /* we don't respond to pkt-dropped */
4081 case SCTP_ABORT_ASSOCIATION:
4082 /* we don't respond with an ABORT to an ABORT */
4084 case SCTP_SHUTDOWN_COMPLETE:
4086 * we ignore it since we are not waiting for it and
4090 case SCTP_SHUTDOWN_ACK:
4091 sctp_send_shutdown_complete2(src, dst, sh,
4098 offset += SCTP_SIZE32(chk_length);
4099 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4100 sizeof(*ch), (uint8_t *) & chunk_buf);
4102 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4103 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4104 (contains_init_chunk == 0))) {
4105 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4112 * check the inbound datagram to make sure there is not an abort inside it,
4113 * if there is return 1, else return 0.
4116 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
4118 struct sctp_chunkhdr *ch;
4119 struct sctp_init_chunk *init_chk, chunk_buf;
4121 unsigned int chk_length;
4123 offset = iphlen + sizeof(struct sctphdr);
4124 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4125 (uint8_t *) & chunk_buf);
4126 while (ch != NULL) {
4127 chk_length = ntohs(ch->chunk_length);
4128 if (chk_length < sizeof(*ch)) {
4129 /* packet is probably corrupt */
4132 /* we seem to be ok, is it an abort? */
4133 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4134 /* yep, tell them */
4137 if (ch->chunk_type == SCTP_INITIATION) {
4138 /* need to update the Vtag */
4139 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4140 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
4141 if (init_chk != NULL) {
4142 *vtagfill = ntohl(init_chk->init.initiate_tag);
4145 /* Nope, move to the next chunk */
4146 offset += SCTP_SIZE32(chk_length);
4147 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4148 sizeof(*ch), (uint8_t *) & chunk_buf);
4154 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4155 * set (i.e. it's 0) so, create this function to compare link local scopes
4159 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4161 struct sockaddr_in6 a, b;
4167 if (a.sin6_scope_id == 0)
4168 if (sa6_recoverscope(&a)) {
4169 /* can't get scope, so can't match */
4172 if (b.sin6_scope_id == 0)
4173 if (sa6_recoverscope(&b)) {
4174 /* can't get scope, so can't match */
4177 if (a.sin6_scope_id != b.sin6_scope_id)
4184 * returns a sockaddr_in6 with embedded scope recovered and removed
4186 struct sockaddr_in6 *
4187 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4189 /* check and strip embedded scope junk */
4190 if (addr->sin6_family == AF_INET6) {
4191 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4192 if (addr->sin6_scope_id == 0) {
4194 if (!sa6_recoverscope(store)) {
4195 /* use the recovered scope */
4199 /* else, return the original "to" addr */
4200 in6_clearscope(&addr->sin6_addr);
4210 * are the two addresses the same? currently a "scopeless" check returns: 1
4214 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4218 if (sa1 == NULL || sa2 == NULL)
4221 /* must be the same family */
4222 if (sa1->sa_family != sa2->sa_family)
4225 switch (sa1->sa_family) {
4229 /* IPv6 addresses */
4230 struct sockaddr_in6 *sin6_1, *sin6_2;
4232 sin6_1 = (struct sockaddr_in6 *)sa1;
4233 sin6_2 = (struct sockaddr_in6 *)sa2;
4234 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4241 /* IPv4 addresses */
4242 struct sockaddr_in *sin_1, *sin_2;
4244 sin_1 = (struct sockaddr_in *)sa1;
4245 sin_2 = (struct sockaddr_in *)sa2;
4246 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4250 /* we don't do these... */
4256 sctp_print_address(struct sockaddr *sa)
4259 char ip6buf[INET6_ADDRSTRLEN];
4263 switch (sa->sa_family) {
4267 struct sockaddr_in6 *sin6;
4269 sin6 = (struct sockaddr_in6 *)sa;
4270 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4271 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4272 ntohs(sin6->sin6_port),
4273 sin6->sin6_scope_id);
4280 struct sockaddr_in *sin;
4283 sin = (struct sockaddr_in *)sa;
4284 p = (unsigned char *)&sin->sin_addr;
4285 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4286 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4297 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4298 struct sctp_inpcb *new_inp,
4299 struct sctp_tcb *stcb,
4303 * go through our old INP and pull off any control structures that
4304 * belong to stcb and move then to the new inp.
4306 struct socket *old_so, *new_so;
4307 struct sctp_queued_to_read *control, *nctl;
4308 struct sctp_readhead tmp_queue;
4312 old_so = old_inp->sctp_socket;
4313 new_so = new_inp->sctp_socket;
4314 TAILQ_INIT(&tmp_queue);
4315 error = sblock(&old_so->so_rcv, waitflags);
4318 * Gak, can't get sblock, we have a problem. data will be
4319 * left stranded.. and we don't dare look at it since the
4320 * other thread may be reading something. Oh well, its a
4321 * screwed up app that does a peeloff OR a accept while
4322 * reading from the main socket... actually its only the
4323 * peeloff() case, since I think read will fail on a
4324 * listening socket..
4328 /* lock the socket buffers */
4329 SCTP_INP_READ_LOCK(old_inp);
4330 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4331 /* Pull off all for out target stcb */
4332 if (control->stcb == stcb) {
4333 /* remove it we want it */
4334 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4335 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4338 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4339 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4341 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
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_SBRESULT, 0);
4345 m = SCTP_BUF_NEXT(m);
4349 SCTP_INP_READ_UNLOCK(old_inp);
4350 /* Remove the sb-lock on the old socket */
4352 sbunlock(&old_so->so_rcv);
4353 /* Now we move them over to the new socket buffer */
4354 SCTP_INP_READ_LOCK(new_inp);
4355 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4356 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4359 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4360 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4362 sctp_sballoc(stcb, &new_so->so_rcv, m);
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_SBRESULT, 0);
4366 m = SCTP_BUF_NEXT(m);
4369 SCTP_INP_READ_UNLOCK(new_inp);
4373 sctp_add_to_readq(struct sctp_inpcb *inp,
4374 struct sctp_tcb *stcb,
4375 struct sctp_queued_to_read *control,
4378 int inp_read_lock_held,
4380 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4386 * Here we must place the control on the end of the socket read
4387 * queue AND increment sb_cc so that select will work properly on
4390 struct mbuf *m, *prev = NULL;
4395 panic("Gak, inp NULL on add_to_readq");
4399 if (inp_read_lock_held == 0)
4400 SCTP_INP_READ_LOCK(inp);
4401 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4402 sctp_free_remote_addr(control->whoFrom);
4403 if (control->data) {
4404 sctp_m_freem(control->data);
4405 control->data = NULL;
4407 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4408 if (inp_read_lock_held == 0)
4409 SCTP_INP_READ_UNLOCK(inp);
4412 if (!(control->spec_flags & M_NOTIFICATION)) {
4413 atomic_add_int(&inp->total_recvs, 1);
4414 if (!control->do_not_ref_stcb) {
4415 atomic_add_int(&stcb->total_recvs, 1);
4419 control->held_length = 0;
4420 control->length = 0;
4422 if (SCTP_BUF_LEN(m) == 0) {
4423 /* Skip mbufs with NO length */
4426 control->data = sctp_m_free(m);
4429 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4430 m = SCTP_BUF_NEXT(prev);
4433 control->tail_mbuf = prev;
4438 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4439 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4441 sctp_sballoc(stcb, sb, m);
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_SBRESULT, 0);
4445 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4446 m = SCTP_BUF_NEXT(m);
4449 control->tail_mbuf = prev;
4451 /* Everything got collapsed out?? */
4452 sctp_free_remote_addr(control->whoFrom);
4453 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4454 if (inp_read_lock_held == 0)
4455 SCTP_INP_READ_UNLOCK(inp);
4459 control->end_added = 1;
4461 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4462 if (inp_read_lock_held == 0)
4463 SCTP_INP_READ_UNLOCK(inp);
4464 if (inp && inp->sctp_socket) {
4465 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4466 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4468 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4471 so = SCTP_INP_SO(inp);
4474 atomic_add_int(&stcb->asoc.refcnt, 1);
4475 SCTP_TCB_UNLOCK(stcb);
4477 SCTP_SOCKET_LOCK(so, 1);
4479 SCTP_TCB_LOCK(stcb);
4480 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4482 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4483 SCTP_SOCKET_UNLOCK(so, 1);
4488 sctp_sorwakeup(inp, inp->sctp_socket);
4489 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4491 SCTP_SOCKET_UNLOCK(so, 1);
4500 sctp_append_to_readq(struct sctp_inpcb *inp,
4501 struct sctp_tcb *stcb,
4502 struct sctp_queued_to_read *control,
4509 * A partial delivery API event is underway. OR we are appending on
4510 * the reassembly queue.
4512 * If PDAPI this means we need to add m to the end of the data.
4513 * Increase the length in the control AND increment the sb_cc.
4514 * Otherwise sb is NULL and all we need to do is put it at the end
4515 * of the mbuf chain.
4518 struct mbuf *mm, *tail = NULL, *prev = NULL;
4521 SCTP_INP_READ_LOCK(inp);
4523 if (control == NULL) {
4526 SCTP_INP_READ_UNLOCK(inp);
4530 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) {
4531 SCTP_INP_READ_UNLOCK(inp);
4534 if (control->end_added) {
4535 /* huh this one is complete? */
4543 if (SCTP_BUF_LEN(mm) == 0) {
4544 /* Skip mbufs with NO lenght */
4547 m = sctp_m_free(mm);
4550 SCTP_BUF_NEXT(prev) = sctp_m_free(mm);
4551 mm = SCTP_BUF_NEXT(prev);
4556 len += SCTP_BUF_LEN(mm);
4558 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4559 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm));
4561 sctp_sballoc(stcb, sb, 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_SBRESULT, 0);
4566 mm = SCTP_BUF_NEXT(mm);
4571 /* Really there should always be a prev */
4573 /* Huh nothing left? */
4575 panic("Nothing left to add?");
4582 if (control->tail_mbuf) {
4584 SCTP_BUF_NEXT(control->tail_mbuf) = m;
4585 control->tail_mbuf = tail;
4589 if (control->data != NULL) {
4590 panic("This should NOT happen");
4594 control->tail_mbuf = tail;
4596 atomic_add_int(&control->length, len);
4598 /* message is complete */
4599 if (stcb && (control == stcb->asoc.control_pdapi)) {
4600 stcb->asoc.control_pdapi = NULL;
4602 control->held_length = 0;
4603 control->end_added = 1;
4606 control->do_not_ref_stcb = 1;
4609 * When we are appending in partial delivery, the cum-ack is used
4610 * for the actual pd-api highest tsn on this mbuf. The true cum-ack
4611 * is populated in the outbound sinfo structure from the true cumack
4612 * if the association exists...
4614 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack;
4616 SCTP_INP_READ_UNLOCK(inp);
4618 if (inp && inp->sctp_socket) {
4619 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4620 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4622 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4625 so = SCTP_INP_SO(inp);
4627 atomic_add_int(&stcb->asoc.refcnt, 1);
4628 SCTP_TCB_UNLOCK(stcb);
4630 SCTP_SOCKET_LOCK(so, 1);
4632 SCTP_TCB_LOCK(stcb);
4633 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4635 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4636 SCTP_SOCKET_UNLOCK(so, 1);
4640 sctp_sorwakeup(inp, inp->sctp_socket);
4641 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4642 SCTP_SOCKET_UNLOCK(so, 1);
4651 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4652 *************ALTERNATE ROUTING CODE
4655 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4656 *************ALTERNATE ROUTING CODE
4660 sctp_generate_cause(uint16_t code, char *info)
4663 struct sctp_gen_error_cause *cause;
4664 size_t info_len, len;
4666 if ((code == 0) || (info == NULL)) {
4669 info_len = strlen(info);
4670 len = sizeof(struct sctp_paramhdr) + info_len;
4671 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4673 SCTP_BUF_LEN(m) = len;
4674 cause = mtod(m, struct sctp_gen_error_cause *);
4675 cause->code = htons(code);
4676 cause->length = htons((uint16_t) len);
4677 memcpy(cause->info, info, info_len);
4683 sctp_generate_no_user_data_cause(uint32_t tsn)
4686 struct sctp_error_no_user_data *no_user_data_cause;
4689 len = sizeof(struct sctp_error_no_user_data);
4690 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4692 SCTP_BUF_LEN(m) = len;
4693 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4694 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4695 no_user_data_cause->cause.length = htons((uint16_t) len);
4696 no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */
4701 #ifdef SCTP_MBCNT_LOGGING
4703 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4704 struct sctp_tmit_chunk *tp1, int chk_cnt)
4706 if (tp1->data == NULL) {
4709 asoc->chunks_on_out_queue -= chk_cnt;
4710 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4711 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4712 asoc->total_output_queue_size,
4717 if (asoc->total_output_queue_size >= tp1->book_size) {
4718 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4720 asoc->total_output_queue_size = 0;
4723 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4724 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4725 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4726 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4728 stcb->sctp_socket->so_snd.sb_cc = 0;
4737 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4738 uint8_t sent, int so_locked
4739 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4744 struct sctp_stream_out *strq;
4745 struct sctp_tmit_chunk *chk = NULL, *tp2;
4746 struct sctp_stream_queue_pending *sp;
4747 uint16_t stream = 0, seq = 0;
4748 uint8_t foundeom = 0;
4751 int do_wakeup_routine = 0;
4753 stream = tp1->rec.data.stream_number;
4754 seq = tp1->rec.data.stream_seq;
4755 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
4756 stcb->asoc.abandoned_sent[0]++;
4757 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4758 stcb->asoc.strmout[stream].abandoned_sent[0]++;
4759 #if defined(SCTP_DETAILED_STR_STATS)
4760 stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4763 stcb->asoc.abandoned_unsent[0]++;
4764 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4765 stcb->asoc.strmout[stream].abandoned_unsent[0]++;
4766 #if defined(SCTP_DETAILED_STR_STATS)
4767 stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4771 ret_sz += tp1->book_size;
4772 if (tp1->data != NULL) {
4773 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4774 sctp_flight_size_decrease(tp1);
4775 sctp_total_flight_decrease(stcb, tp1);
4777 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4778 stcb->asoc.peers_rwnd += tp1->send_size;
4779 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4781 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4783 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4786 sctp_m_freem(tp1->data);
4789 do_wakeup_routine = 1;
4790 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4791 stcb->asoc.sent_queue_cnt_removeable--;
4794 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4795 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4796 SCTP_DATA_NOT_FRAG) {
4797 /* not frag'ed we ae done */
4800 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4801 /* end of frag, we are done */
4806 * Its a begin or middle piece, we must mark all of
4810 tp1 = TAILQ_NEXT(tp1, sctp_next);
4812 } while (tp1 && notdone);
4813 if (foundeom == 0) {
4815 * The multi-part message was scattered across the send and
4818 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4819 if ((tp1->rec.data.stream_number != stream) ||
4820 (tp1->rec.data.stream_seq != seq)) {
4824 * save to chk in case we have some on stream out
4825 * queue. If so and we have an un-transmitted one we
4826 * don't have to fudge the TSN.
4829 ret_sz += tp1->book_size;
4830 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4832 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4834 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4837 sctp_m_freem(tp1->data);
4840 /* No flight involved here book the size to 0 */
4842 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4845 do_wakeup_routine = 1;
4846 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4847 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4849 * on to the sent queue so we can wait for it to be
4852 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4854 stcb->asoc.send_queue_cnt--;
4855 stcb->asoc.sent_queue_cnt++;
4858 if (foundeom == 0) {
4860 * Still no eom found. That means there is stuff left on the
4861 * stream out queue.. yuck.
4863 SCTP_TCB_SEND_LOCK(stcb);
4864 strq = &stcb->asoc.strmout[stream];
4865 sp = TAILQ_FIRST(&strq->outqueue);
4867 sp->discard_rest = 1;
4869 * We may need to put a chunk on the queue that
4870 * holds the TSN that would have been sent with the
4874 /* Yep, we have to */
4875 sctp_alloc_a_chunk(stcb, chk);
4878 * we are hosed. All we can do is
4879 * nothing.. which will cause an
4880 * abort if the peer is paying
4885 memset(chk, 0, sizeof(*chk));
4886 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG;
4887 chk->sent = SCTP_FORWARD_TSN_SKIP;
4888 chk->asoc = &stcb->asoc;
4889 chk->rec.data.stream_seq = strq->next_sequence_send;
4890 chk->rec.data.stream_number = sp->stream;
4891 chk->rec.data.payloadtype = sp->ppid;
4892 chk->rec.data.context = sp->context;
4893 chk->flags = sp->act_flags;
4895 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4896 strq->chunks_on_queues++;
4897 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4898 stcb->asoc.sent_queue_cnt++;
4899 stcb->asoc.pr_sctp_cnt++;
4901 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4903 strq->next_sequence_send++;
4907 * Pull any data to free up the SB and allow
4908 * sender to "add more" while we will throw
4911 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4912 ret_sz += sp->length;
4913 do_wakeup_routine = 1;
4915 sctp_m_freem(sp->data);
4917 sp->tail_mbuf = NULL;
4921 SCTP_TCB_SEND_UNLOCK(stcb);
4923 if (do_wakeup_routine) {
4924 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4927 so = SCTP_INP_SO(stcb->sctp_ep);
4929 atomic_add_int(&stcb->asoc.refcnt, 1);
4930 SCTP_TCB_UNLOCK(stcb);
4931 SCTP_SOCKET_LOCK(so, 1);
4932 SCTP_TCB_LOCK(stcb);
4933 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4934 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4935 /* assoc was freed while we were unlocked */
4936 SCTP_SOCKET_UNLOCK(so, 1);
4941 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4942 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4944 SCTP_SOCKET_UNLOCK(so, 1);
4952 * checks to see if the given address, sa, is one that is currently known by
4953 * the kernel note: can't distinguish the same address on multiple interfaces
4954 * and doesn't handle multiple addresses with different zone/scope id's note:
4955 * ifa_ifwithaddr() compares the entire sockaddr struct
4958 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4961 struct sctp_laddr *laddr;
4963 if (holds_lock == 0) {
4964 SCTP_INP_RLOCK(inp);
4966 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4967 if (laddr->ifa == NULL)
4969 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4972 if (addr->sa_family == AF_INET) {
4973 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4974 laddr->ifa->address.sin.sin_addr.s_addr) {
4976 if (holds_lock == 0) {
4977 SCTP_INP_RUNLOCK(inp);
4979 return (laddr->ifa);
4985 if (addr->sa_family == AF_INET6) {
4986 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4987 &laddr->ifa->address.sin6)) {
4989 if (holds_lock == 0) {
4990 SCTP_INP_RUNLOCK(inp);
4992 return (laddr->ifa);
4998 if (holds_lock == 0) {
4999 SCTP_INP_RUNLOCK(inp);
5005 sctp_get_ifa_hash_val(struct sockaddr *addr)
5007 switch (addr->sa_family) {
5011 struct sockaddr_in *sin;
5013 sin = (struct sockaddr_in *)addr;
5014 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
5020 struct sockaddr_in6 *sin6;
5021 uint32_t hash_of_addr;
5023 sin6 = (struct sockaddr_in6 *)addr;
5024 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5025 sin6->sin6_addr.s6_addr32[1] +
5026 sin6->sin6_addr.s6_addr32[2] +
5027 sin6->sin6_addr.s6_addr32[3]);
5028 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5029 return (hash_of_addr);
5039 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5041 struct sctp_ifa *sctp_ifap;
5042 struct sctp_vrf *vrf;
5043 struct sctp_ifalist *hash_head;
5044 uint32_t hash_of_addr;
5046 if (holds_lock == 0)
5047 SCTP_IPI_ADDR_RLOCK();
5049 vrf = sctp_find_vrf(vrf_id);
5051 if (holds_lock == 0)
5052 SCTP_IPI_ADDR_RUNLOCK();
5055 hash_of_addr = sctp_get_ifa_hash_val(addr);
5057 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5058 if (hash_head == NULL) {
5059 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5060 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
5061 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
5062 sctp_print_address(addr);
5063 SCTP_PRINTF("No such bucket for address\n");
5064 if (holds_lock == 0)
5065 SCTP_IPI_ADDR_RUNLOCK();
5069 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5070 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5073 if (addr->sa_family == AF_INET) {
5074 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5075 sctp_ifap->address.sin.sin_addr.s_addr) {
5077 if (holds_lock == 0)
5078 SCTP_IPI_ADDR_RUNLOCK();
5085 if (addr->sa_family == AF_INET6) {
5086 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5087 &sctp_ifap->address.sin6)) {
5089 if (holds_lock == 0)
5090 SCTP_IPI_ADDR_RUNLOCK();
5097 if (holds_lock == 0)
5098 SCTP_IPI_ADDR_RUNLOCK();
5103 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
5106 /* User pulled some data, do we need a rwnd update? */
5109 struct socket *so = NULL;
5114 atomic_add_int(&stcb->asoc.refcnt, 1);
5116 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5117 SCTP_STATE_SHUTDOWN_RECEIVED |
5118 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5119 /* Pre-check If we are freeing no update */
5122 SCTP_INP_INCR_REF(stcb->sctp_ep);
5123 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5124 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5127 so = stcb->sctp_socket;
5131 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5132 /* Have you have freed enough to look */
5134 /* Yep, its worth a look and the lock overhead */
5136 /* Figure out what the rwnd would be */
5137 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5138 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5139 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5143 if (dif >= rwnd_req) {
5145 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5148 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5150 * One last check before we allow the guy possibly
5151 * to get in. There is a race, where the guy has not
5152 * reached the gate. In that case
5156 SCTP_TCB_LOCK(stcb);
5157 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5158 /* No reports here */
5159 SCTP_TCB_UNLOCK(stcb);
5162 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5163 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5165 sctp_chunk_output(stcb->sctp_ep, stcb,
5166 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5167 /* make sure no timer is running */
5168 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5169 SCTP_TCB_UNLOCK(stcb);
5171 /* Update how much we have pending */
5172 stcb->freed_by_sorcv_sincelast = dif;
5175 if (so && r_unlocked && hold_rlock) {
5176 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5178 SCTP_INP_DECR_REF(stcb->sctp_ep);
5180 atomic_add_int(&stcb->asoc.refcnt, -1);
5185 sctp_sorecvmsg(struct socket *so,
5188 struct sockaddr *from,
5191 struct sctp_sndrcvinfo *sinfo,
5195 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5196 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5197 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5198 * On the way out we may send out any combination of:
5199 * MSG_NOTIFICATION MSG_EOR
5202 struct sctp_inpcb *inp = NULL;
5204 int cp_len = 0, error = 0;
5205 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5206 struct mbuf *m = NULL;
5207 struct sctp_tcb *stcb = NULL;
5208 int wakeup_read_socket = 0;
5209 int freecnt_applied = 0;
5210 int out_flags = 0, in_flags = 0;
5211 int block_allowed = 1;
5212 uint32_t freed_so_far = 0;
5213 uint32_t copied_so_far = 0;
5214 int in_eeor_mode = 0;
5215 int no_rcv_needed = 0;
5216 uint32_t rwnd_req = 0;
5217 int hold_sblock = 0;
5220 uint32_t held_length = 0;
5221 int sockbuf_lock = 0;
5224 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5228 in_flags = *msg_flags;
5229 if (in_flags & MSG_PEEK)
5230 SCTP_STAT_INCR(sctps_read_peeks);
5234 slen = uio->uio_resid;
5236 /* Pull in and set up our int flags */
5237 if (in_flags & MSG_OOB) {
5238 /* Out of band's NOT supported */
5239 return (EOPNOTSUPP);
5241 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5242 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5245 if ((in_flags & (MSG_DONTWAIT
5248 SCTP_SO_IS_NBIO(so)) {
5251 /* setup the endpoint */
5252 inp = (struct sctp_inpcb *)so->so_pcb;
5254 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5257 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5258 /* Must be at least a MTU's worth */
5259 if (rwnd_req < SCTP_MIN_RWND)
5260 rwnd_req = SCTP_MIN_RWND;
5261 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5262 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5263 sctp_misc_ints(SCTP_SORECV_ENTER,
5264 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid);
5266 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5267 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5268 rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid);
5270 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5272 goto release_unlocked;
5279 if (hold_sblock == 0) {
5280 SOCKBUF_LOCK(&so->so_rcv);
5283 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5284 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5287 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5289 error = so->so_error;
5290 if ((in_flags & MSG_PEEK) == 0)
5294 if (so->so_rcv.sb_cc == 0) {
5301 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
5302 /* we need to wait for data */
5303 if ((so->so_rcv.sb_cc == 0) &&
5304 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5305 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5306 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5308 * For active open side clear flags for
5309 * re-use passive open is blocked by
5312 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5314 * You were aborted, passive side
5317 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5320 so->so_state &= ~(SS_ISCONNECTING |
5321 SS_ISDISCONNECTING |
5325 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5326 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5333 error = sbwait(&so->so_rcv);
5338 goto restart_nosblocks;
5339 } else if (so->so_rcv.sb_cc == 0) {
5341 error = so->so_error;
5342 if ((in_flags & MSG_PEEK) == 0)
5345 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5346 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
5347 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5349 * For active open side clear flags
5350 * for re-use passive open is
5351 * blocked by connect.
5353 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5355 * You were aborted, passive
5356 * side always hits here
5358 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5361 so->so_state &= ~(SS_ISCONNECTING |
5362 SS_ISDISCONNECTING |
5366 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5367 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5374 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5375 error = EWOULDBLOCK;
5379 if (hold_sblock == 1) {
5380 SOCKBUF_UNLOCK(&so->so_rcv);
5383 /* we possibly have data we can read */
5384 /* sa_ignore FREED_MEMORY */
5385 control = TAILQ_FIRST(&inp->read_queue);
5386 if (control == NULL) {
5388 * This could be happening since the appender did the
5389 * increment but as not yet did the tailq insert onto the
5392 if (hold_rlock == 0) {
5393 SCTP_INP_READ_LOCK(inp);
5395 control = TAILQ_FIRST(&inp->read_queue);
5396 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5398 panic("Huh, its non zero and nothing on control?");
5400 so->so_rcv.sb_cc = 0;
5402 SCTP_INP_READ_UNLOCK(inp);
5406 if ((control->length == 0) &&
5407 (control->do_not_ref_stcb)) {
5409 * Clean up code for freeing assoc that left behind a
5410 * pdapi.. maybe a peer in EEOR that just closed after
5411 * sending and never indicated a EOR.
5413 if (hold_rlock == 0) {
5415 SCTP_INP_READ_LOCK(inp);
5417 control->held_length = 0;
5418 if (control->data) {
5419 /* Hmm there is data here .. fix */
5423 m_tmp = control->data;
5425 cnt += SCTP_BUF_LEN(m_tmp);
5426 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5427 control->tail_mbuf = m_tmp;
5428 control->end_added = 1;
5430 m_tmp = SCTP_BUF_NEXT(m_tmp);
5432 control->length = cnt;
5435 TAILQ_REMOVE(&inp->read_queue, control, next);
5436 /* Add back any hiddend data */
5437 sctp_free_remote_addr(control->whoFrom);
5438 sctp_free_a_readq(stcb, control);
5442 SCTP_INP_READ_UNLOCK(inp);
5446 if ((control->length == 0) &&
5447 (control->end_added == 1)) {
5449 * Do we also need to check for (control->pdapi_aborted ==
5452 if (hold_rlock == 0) {
5454 SCTP_INP_READ_LOCK(inp);
5456 TAILQ_REMOVE(&inp->read_queue, control, next);
5457 if (control->data) {
5459 panic("control->data not null but control->length == 0");
5461 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5462 sctp_m_freem(control->data);
5463 control->data = NULL;
5466 if (control->aux_data) {
5467 sctp_m_free(control->aux_data);
5468 control->aux_data = NULL;
5470 sctp_free_remote_addr(control->whoFrom);
5471 sctp_free_a_readq(stcb, control);
5474 SCTP_INP_READ_UNLOCK(inp);
5478 if (control->length == 0) {
5479 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5481 /* find a more suitable one then this */
5482 ctl = TAILQ_NEXT(control, next);
5484 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5486 (ctl->spec_flags & M_NOTIFICATION) ||
5487 ((ctl->do_not_ref_stcb == 0) &&
5488 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5491 * If we have a different TCB next, and there is data
5492 * present. If we have already taken some (pdapi), OR we can
5493 * ref the tcb and no delivery as started on this stream, we
5494 * take it. Note we allow a notification on a different
5495 * assoc to be delivered..
5499 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5501 ((ctl->some_taken) ||
5502 ((ctl->do_not_ref_stcb == 0) &&
5503 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5504 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5506 * If we have the same tcb, and there is data present, and we
5507 * have the strm interleave feature present. Then if we have
5508 * taken some (pdapi) or we can refer to tht tcb AND we have
5509 * not started a delivery for this stream, we can take it.
5510 * Note we do NOT allow a notificaiton on the same assoc to
5516 ctl = TAILQ_NEXT(ctl, next);
5520 * if we reach here, not suitable replacement is available
5521 * <or> fragment interleave is NOT on. So stuff the sb_cc
5522 * into the our held count, and its time to sleep again.
5524 held_length = so->so_rcv.sb_cc;
5525 control->held_length = so->so_rcv.sb_cc;
5528 /* Clear the held length since there is something to read */
5529 control->held_length = 0;
5531 SCTP_INP_READ_UNLOCK(inp);
5536 * If we reach here, control has a some data for us to read off.
5537 * Note that stcb COULD be NULL.
5539 control->some_taken++;
5541 SOCKBUF_UNLOCK(&so->so_rcv);
5544 stcb = control->stcb;
5546 if ((control->do_not_ref_stcb == 0) &&
5547 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5548 if (freecnt_applied == 0)
5550 } else if (control->do_not_ref_stcb == 0) {
5551 /* you can't free it on me please */
5553 * The lock on the socket buffer protects us so the
5554 * free code will stop. But since we used the
5555 * socketbuf lock and the sender uses the tcb_lock
5556 * to increment, we need to use the atomic add to
5559 if (freecnt_applied) {
5561 panic("refcnt already incremented");
5563 SCTP_PRINTF("refcnt already incremented?\n");
5566 atomic_add_int(&stcb->asoc.refcnt, 1);
5567 freecnt_applied = 1;
5570 * Setup to remember how much we have not yet told
5571 * the peer our rwnd has opened up. Note we grab the
5572 * value from the tcb from last time. Note too that
5573 * sack sending clears this when a sack is sent,
5574 * which is fine. Once we hit the rwnd_req, we then
5575 * will go to the sctp_user_rcvd() that will not
5576 * lock until it KNOWs it MUST send a WUP-SACK.
5578 freed_so_far = stcb->freed_by_sorcv_sincelast;
5579 stcb->freed_by_sorcv_sincelast = 0;
5583 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5584 control->do_not_ref_stcb == 0) {
5585 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5587 /* First lets get off the sinfo and sockaddr info */
5588 if ((sinfo) && filling_sinfo) {
5589 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo));
5590 nxt = TAILQ_NEXT(control, next);
5591 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5592 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5593 struct sctp_extrcvinfo *s_extra;
5595 s_extra = (struct sctp_extrcvinfo *)sinfo;
5598 s_extra->sreinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5599 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5600 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5602 if (nxt->spec_flags & M_NOTIFICATION) {
5603 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5605 s_extra->sreinfo_next_aid = nxt->sinfo_assoc_id;
5606 s_extra->sreinfo_next_length = nxt->length;
5607 s_extra->sreinfo_next_ppid = nxt->sinfo_ppid;
5608 s_extra->sreinfo_next_stream = nxt->sinfo_stream;
5609 if (nxt->tail_mbuf != NULL) {
5610 if (nxt->end_added) {
5611 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5616 * we explicitly 0 this, since the memcpy
5617 * got some other things beyond the older
5618 * sinfo_ that is on the control's structure
5622 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
5623 s_extra->sreinfo_next_aid = 0;
5624 s_extra->sreinfo_next_length = 0;
5625 s_extra->sreinfo_next_ppid = 0;
5626 s_extra->sreinfo_next_stream = 0;
5630 * update off the real current cum-ack, if we have an stcb.
5632 if ((control->do_not_ref_stcb == 0) && stcb)
5633 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5635 * mask off the high bits, we keep the actual chunk bits in
5638 sinfo->sinfo_flags &= 0x00ff;
5639 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5640 sinfo->sinfo_flags |= SCTP_UNORDERED;
5643 #ifdef SCTP_ASOCLOG_OF_TSNS
5645 int index, newindex;
5646 struct sctp_pcbtsn_rlog *entry;
5649 index = inp->readlog_index;
5650 newindex = index + 1;
5651 if (newindex >= SCTP_READ_LOG_SIZE) {
5654 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5655 entry = &inp->readlog[index];
5656 entry->vtag = control->sinfo_assoc_id;
5657 entry->strm = control->sinfo_stream;
5658 entry->seq = control->sinfo_ssn;
5659 entry->sz = control->length;
5660 entry->flgs = control->sinfo_flags;
5663 if ((fromlen > 0) && (from != NULL)) {
5664 union sctp_sockstore store;
5667 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5670 len = sizeof(struct sockaddr_in6);
5671 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5672 store.sin6.sin6_port = control->port_from;
5678 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5679 len = sizeof(struct sockaddr_in6);
5680 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5682 store.sin6.sin6_port = control->port_from;
5684 len = sizeof(struct sockaddr_in);
5685 store.sin = control->whoFrom->ro._l_addr.sin;
5686 store.sin.sin_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;
5699 memcpy(from, &store, min((size_t)fromlen, len));
5702 struct sockaddr_in6 lsa6, *from6;
5704 from6 = (struct sockaddr_in6 *)from;
5705 sctp_recover_scope_mac(from6, (&lsa6));
5709 /* now copy out what data we can */
5711 /* copy out each mbuf in the chain up to length */
5715 /* Move out all we can */
5716 cp_len = (int)uio->uio_resid;
5717 my_len = (int)SCTP_BUF_LEN(m);
5718 if (cp_len > my_len) {
5719 /* not enough in this buf */
5723 SCTP_INP_READ_UNLOCK(inp);
5727 error = uiomove(mtod(m, char *), cp_len, uio);
5729 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5732 if ((control->do_not_ref_stcb == 0) && stcb &&
5733 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5737 /* error we are out of here */
5740 if ((SCTP_BUF_NEXT(m) == NULL) &&
5741 (cp_len >= SCTP_BUF_LEN(m)) &&
5742 ((control->end_added == 0) ||
5743 (control->end_added &&
5744 (TAILQ_NEXT(control, next) == NULL)))
5746 SCTP_INP_READ_LOCK(inp);
5749 if (cp_len == SCTP_BUF_LEN(m)) {
5750 if ((SCTP_BUF_NEXT(m) == NULL) &&
5751 (control->end_added)) {
5752 out_flags |= MSG_EOR;
5753 if ((control->do_not_ref_stcb == 0) &&
5754 (control->stcb != NULL) &&
5755 ((control->spec_flags & M_NOTIFICATION) == 0))
5756 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5758 if (control->spec_flags & M_NOTIFICATION) {
5759 out_flags |= MSG_NOTIFICATION;
5761 /* we ate up the mbuf */
5762 if (in_flags & MSG_PEEK) {
5764 m = SCTP_BUF_NEXT(m);
5765 copied_so_far += cp_len;
5767 /* dispose of the mbuf */
5768 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5769 sctp_sblog(&so->so_rcv,
5770 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5772 sctp_sbfree(control, stcb, &so->so_rcv, m);
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_SBRESULT, 0);
5777 copied_so_far += cp_len;
5778 freed_so_far += cp_len;
5779 freed_so_far += MSIZE;
5780 atomic_subtract_int(&control->length, cp_len);
5781 control->data = sctp_m_free(m);
5784 * been through it all, must hold sb
5785 * lock ok to null tail
5787 if (control->data == NULL) {
5789 if ((control->end_added == 0) ||
5790 (TAILQ_NEXT(control, next) == NULL)) {
5798 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5799 panic("Hmm we don't own the lock?");
5803 control->tail_mbuf = NULL;
5805 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5806 panic("end_added, nothing left and no MSG_EOR");
5812 /* Do we need to trim the mbuf? */
5813 if (control->spec_flags & M_NOTIFICATION) {
5814 out_flags |= MSG_NOTIFICATION;
5816 if ((in_flags & MSG_PEEK) == 0) {
5817 SCTP_BUF_RESV_UF(m, cp_len);
5818 SCTP_BUF_LEN(m) -= cp_len;
5819 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5820 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5822 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5823 if ((control->do_not_ref_stcb == 0) &&
5825 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5827 copied_so_far += cp_len;
5828 freed_so_far += cp_len;
5829 freed_so_far += MSIZE;
5830 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5831 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5832 SCTP_LOG_SBRESULT, 0);
5834 atomic_subtract_int(&control->length, cp_len);
5836 copied_so_far += cp_len;
5839 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5842 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5843 (control->do_not_ref_stcb == 0) &&
5844 (freed_so_far >= rwnd_req)) {
5845 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5847 } /* end while(m) */
5849 * At this point we have looked at it all and we either have
5850 * a MSG_EOR/or read all the user wants... <OR>
5851 * control->length == 0.
5853 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5854 /* we are done with this control */
5855 if (control->length == 0) {
5856 if (control->data) {
5858 panic("control->data not null at read eor?");
5860 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5861 sctp_m_freem(control->data);
5862 control->data = NULL;
5866 if (TAILQ_NEXT(control, next) == NULL) {
5868 * If we don't have a next we need a
5869 * lock, if there is a next
5870 * interrupt is filling ahead of us
5871 * and we don't need a lock to
5872 * remove this guy (which is the
5873 * head of the queue).
5875 if (hold_rlock == 0) {
5876 SCTP_INP_READ_LOCK(inp);
5880 TAILQ_REMOVE(&inp->read_queue, control, next);
5881 /* Add back any hiddend data */
5882 if (control->held_length) {
5884 control->held_length = 0;
5885 wakeup_read_socket = 1;
5887 if (control->aux_data) {
5888 sctp_m_free(control->aux_data);
5889 control->aux_data = NULL;
5891 no_rcv_needed = control->do_not_ref_stcb;
5892 sctp_free_remote_addr(control->whoFrom);
5893 control->data = NULL;
5894 sctp_free_a_readq(stcb, control);
5896 if ((freed_so_far >= rwnd_req) &&
5897 (no_rcv_needed == 0))
5898 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5902 * The user did not read all of this
5903 * message, turn off the returned MSG_EOR
5904 * since we are leaving more behind on the
5908 if (control->end_added &&
5909 (control->data == NULL) &&
5910 (control->tail_mbuf == NULL)) {
5911 panic("Gak, control->length is corrupt?");
5914 no_rcv_needed = control->do_not_ref_stcb;
5915 out_flags &= ~MSG_EOR;
5918 if (out_flags & MSG_EOR) {
5921 if ((uio->uio_resid == 0) ||
5923 (copied_so_far >= (uint32_t) max(so->so_rcv.sb_lowat, 1)))) {
5927 * If I hit here the receiver wants more and this message is
5928 * NOT done (pd-api). So two questions. Can we block? if not
5929 * we are done. Did the user NOT set MSG_WAITALL?
5931 if (block_allowed == 0) {
5935 * We need to wait for more data a few things: - We don't
5936 * sbunlock() so we don't get someone else reading. - We
5937 * must be sure to account for the case where what is added
5938 * is NOT to our control when we wakeup.
5942 * Do we need to tell the transport a rwnd update might be
5943 * needed before we go to sleep?
5945 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5946 ((freed_so_far >= rwnd_req) &&
5947 (control->do_not_ref_stcb == 0) &&
5948 (no_rcv_needed == 0))) {
5949 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5952 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5955 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5958 if (hold_rlock == 1) {
5959 SCTP_INP_READ_UNLOCK(inp);
5962 if (hold_sblock == 0) {
5963 SOCKBUF_LOCK(&so->so_rcv);
5966 if ((copied_so_far) && (control->length == 0) &&
5967 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5970 if (so->so_rcv.sb_cc <= control->held_length) {
5971 error = sbwait(&so->so_rcv);
5975 control->held_length = 0;
5978 SOCKBUF_UNLOCK(&so->so_rcv);
5981 if (control->length == 0) {
5982 /* still nothing here */
5983 if (control->end_added == 1) {
5984 /* he aborted, or is done i.e.did a shutdown */
5985 out_flags |= MSG_EOR;
5986 if (control->pdapi_aborted) {
5987 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5988 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5990 out_flags |= MSG_TRUNC;
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 goto done_with_control;
5997 if (so->so_rcv.sb_cc > held_length) {
5998 control->held_length = so->so_rcv.sb_cc;
6001 goto wait_some_more;
6002 } else if (control->data == NULL) {
6004 * we must re-sync since data is probably being
6007 SCTP_INP_READ_LOCK(inp);
6008 if ((control->length > 0) && (control->data == NULL)) {
6010 * big trouble.. we have the lock and its
6014 panic("Impossible data==NULL length !=0");
6016 out_flags |= MSG_EOR;
6017 out_flags |= MSG_TRUNC;
6018 control->length = 0;
6019 SCTP_INP_READ_UNLOCK(inp);
6020 goto done_with_control;
6022 SCTP_INP_READ_UNLOCK(inp);
6023 /* We will fall around to get more data */
6028 * Give caller back the mbuf chain,
6029 * store in uio_resid the length
6031 wakeup_read_socket = 0;
6032 if ((control->end_added == 0) ||
6033 (TAILQ_NEXT(control, next) == NULL)) {
6034 /* Need to get rlock */
6035 if (hold_rlock == 0) {
6036 SCTP_INP_READ_LOCK(inp);
6040 if (control->end_added) {
6041 out_flags |= MSG_EOR;
6042 if ((control->do_not_ref_stcb == 0) &&
6043 (control->stcb != NULL) &&
6044 ((control->spec_flags & M_NOTIFICATION) == 0))
6045 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6047 if (control->spec_flags & M_NOTIFICATION) {
6048 out_flags |= MSG_NOTIFICATION;
6050 uio->uio_resid = control->length;
6051 *mp = control->data;
6054 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6055 sctp_sblog(&so->so_rcv,
6056 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6058 sctp_sbfree(control, stcb, &so->so_rcv, m);
6059 freed_so_far += SCTP_BUF_LEN(m);
6060 freed_so_far += MSIZE;
6061 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6062 sctp_sblog(&so->so_rcv,
6063 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6065 m = SCTP_BUF_NEXT(m);
6067 control->data = control->tail_mbuf = NULL;
6068 control->length = 0;
6069 if (out_flags & MSG_EOR) {
6070 /* Done with this control */
6071 goto done_with_control;
6075 if (hold_rlock == 1) {
6076 SCTP_INP_READ_UNLOCK(inp);
6079 if (hold_sblock == 1) {
6080 SOCKBUF_UNLOCK(&so->so_rcv);
6083 sbunlock(&so->so_rcv);
6088 SOCKBUF_UNLOCK(&so->so_rcv);
6091 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6092 if ((freed_so_far >= rwnd_req) &&
6093 (control && (control->do_not_ref_stcb == 0)) &&
6094 (no_rcv_needed == 0))
6095 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6099 *msg_flags = out_flags;
6101 if (((out_flags & MSG_EOR) == 0) &&
6102 ((in_flags & MSG_PEEK) == 0) &&
6104 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6105 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6106 struct sctp_extrcvinfo *s_extra;
6108 s_extra = (struct sctp_extrcvinfo *)sinfo;
6109 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
6111 if (hold_rlock == 1) {
6112 SCTP_INP_READ_UNLOCK(inp);
6115 SOCKBUF_UNLOCK(&so->so_rcv);
6118 sbunlock(&so->so_rcv);
6120 if (freecnt_applied) {
6122 * The lock on the socket buffer protects us so the free
6123 * code will stop. But since we used the socketbuf lock and
6124 * the sender uses the tcb_lock to increment, we need to use
6125 * the atomic add to the refcnt.
6129 panic("stcb for refcnt has gone NULL?");
6135 atomic_add_int(&stcb->asoc.refcnt, -1);
6136 /* Save the value back for next time */
6137 stcb->freed_by_sorcv_sincelast = freed_so_far;
6139 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6141 sctp_misc_ints(SCTP_SORECV_DONE,
6143 ((uio) ? (slen - uio->uio_resid) : slen),
6147 sctp_misc_ints(SCTP_SORECV_DONE,
6149 ((uio) ? (slen - uio->uio_resid) : slen),
6155 if (wakeup_read_socket) {
6156 sctp_sorwakeup(inp, so);
6162 #ifdef SCTP_MBUF_LOGGING
6164 sctp_m_free(struct mbuf *m)
6166 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6167 sctp_log_mb(m, SCTP_MBUF_IFREE);
6173 sctp_m_freem(struct mbuf *mb)
6176 mb = sctp_m_free(mb);
6182 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6185 * Given a local address. For all associations that holds the
6186 * address, request a peer-set-primary.
6188 struct sctp_ifa *ifa;
6189 struct sctp_laddr *wi;
6191 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6193 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6194 return (EADDRNOTAVAIL);
6197 * Now that we have the ifa we must awaken the iterator with this
6200 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6202 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6205 /* Now incr the count and int wi structure */
6206 SCTP_INCR_LADDR_COUNT();
6207 bzero(wi, sizeof(*wi));
6208 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6210 wi->action = SCTP_SET_PRIM_ADDR;
6211 atomic_add_int(&ifa->refcount, 1);
6213 /* Now add it to the work queue */
6214 SCTP_WQ_ADDR_LOCK();
6216 * Should this really be a tailq? As it is we will process the
6219 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6220 SCTP_WQ_ADDR_UNLOCK();
6221 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6222 (struct sctp_inpcb *)NULL,
6223 (struct sctp_tcb *)NULL,
6224 (struct sctp_nets *)NULL);
6230 sctp_soreceive(struct socket *so,
6231 struct sockaddr **psa,
6234 struct mbuf **controlp,
6238 uint8_t sockbuf[256];
6239 struct sockaddr *from;
6240 struct sctp_extrcvinfo sinfo;
6241 int filling_sinfo = 1;
6242 struct sctp_inpcb *inp;
6244 inp = (struct sctp_inpcb *)so->so_pcb;
6245 /* pickup the assoc we are reading from */
6247 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6250 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6251 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6252 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6253 (controlp == NULL)) {
6254 /* user does not want the sndrcv ctl */
6258 from = (struct sockaddr *)sockbuf;
6259 fromlen = sizeof(sockbuf);
6266 if (filling_sinfo) {
6267 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6269 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6270 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6271 if (controlp != NULL) {
6272 /* copy back the sinfo in a CMSG format */
6274 *controlp = sctp_build_ctl_nchunk(inp,
6275 (struct sctp_sndrcvinfo *)&sinfo);
6280 /* copy back the address info */
6281 if (from && from->sa_len) {
6282 *psa = sodupsockaddr(from, M_NOWAIT);
6295 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6296 int totaddr, int *error)
6300 struct sctp_inpcb *inp;
6301 struct sockaddr *sa;
6305 struct sockaddr_in *sin;
6309 struct sockaddr_in6 *sin6;
6314 inp = stcb->sctp_ep;
6316 for (i = 0; i < totaddr; i++) {
6317 switch (sa->sa_family) {
6320 incr = sizeof(struct sockaddr_in);
6321 sin = (struct sockaddr_in *)sa;
6322 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6323 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6324 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6325 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6326 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6330 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6331 /* assoc gone no un-lock */
6332 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6333 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6342 incr = sizeof(struct sockaddr_in6);
6343 sin6 = (struct sockaddr_in6 *)sa;
6344 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6345 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6346 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6347 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6351 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6352 /* assoc gone no un-lock */
6353 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6354 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6364 sa = (struct sockaddr *)((caddr_t)sa + incr);
6371 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6372 int *totaddr, int *num_v4, int *num_v6, int *error,
6373 int limit, int *bad_addr)
6375 struct sockaddr *sa;
6376 struct sctp_tcb *stcb = NULL;
6382 *error = *num_v6 = *num_v4 = 0;
6383 /* account and validate addresses */
6384 for (i = 0; i < (size_t)*totaddr; i++) {
6385 switch (sa->sa_family) {
6389 incr = sizeof(struct sockaddr_in);
6390 if (sa->sa_len != incr) {
6391 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6401 struct sockaddr_in6 *sin6;
6403 sin6 = (struct sockaddr_in6 *)sa;
6404 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6405 /* Must be non-mapped for connectx */
6406 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6412 incr = sizeof(struct sockaddr_in6);
6413 if (sa->sa_len != incr) {
6414 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6427 if (i == (size_t)*totaddr) {
6430 SCTP_INP_INCR_REF(inp);
6431 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6433 /* Already have or am bring up an association */
6436 SCTP_INP_DECR_REF(inp);
6438 if ((at + incr) > (size_t)limit) {
6442 sa = (struct sockaddr *)((caddr_t)sa + incr);
6444 return ((struct sctp_tcb *)NULL);
6448 * sctp_bindx(ADD) for one address.
6449 * assumes all arguments are valid/checked by caller.
6452 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6453 struct sockaddr *sa, sctp_assoc_t assoc_id,
6454 uint32_t vrf_id, int *error, void *p)
6456 struct sockaddr *addr_touse;
6458 #if defined(INET) && defined(INET6)
6459 struct sockaddr_in sin;
6463 /* see if we're bound all already! */
6464 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6465 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6471 if (sa->sa_family == AF_INET6) {
6473 struct sockaddr_in6 *sin6;
6476 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6477 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6481 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6482 /* can only bind v6 on PF_INET6 sockets */
6483 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6488 sin6 = (struct sockaddr_in6 *)addr_touse;
6489 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6490 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6491 SCTP_IPV6_V6ONLY(inp)) {
6492 /* can't bind v4-mapped on PF_INET sockets */
6493 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6497 in6_sin6_2_sin(&sin, sin6);
6498 addr_touse = (struct sockaddr *)&sin;
6504 if (sa->sa_family == AF_INET) {
6505 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6506 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6510 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6511 SCTP_IPV6_V6ONLY(inp)) {
6512 /* can't bind v4 on PF_INET sockets */
6513 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6519 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6521 /* Can't get proc for Net/Open BSD */
6522 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6526 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6530 * No locks required here since bind and mgmt_ep_sa all do their own
6531 * locking. If we do something for the FIX: below we may need to
6532 * lock in that case.
6534 if (assoc_id == 0) {
6535 /* add the address */
6536 struct sctp_inpcb *lep;
6537 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6539 /* validate the incoming port */
6540 if ((lsin->sin_port != 0) &&
6541 (lsin->sin_port != inp->sctp_lport)) {
6542 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6546 /* user specified 0 port, set it to existing port */
6547 lsin->sin_port = inp->sctp_lport;
6550 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6553 * We must decrement the refcount since we have the
6554 * ep already and are binding. No remove going on
6557 SCTP_INP_DECR_REF(lep);
6560 /* already bound to it.. ok */
6562 } else if (lep == NULL) {
6563 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6564 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6565 SCTP_ADD_IP_ADDRESS,
6568 *error = EADDRINUSE;
6574 * FIX: decide whether we allow assoc based bindx
6580 * sctp_bindx(DELETE) for one address.
6581 * assumes all arguments are valid/checked by caller.
6584 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6585 struct sockaddr *sa, sctp_assoc_t assoc_id,
6586 uint32_t vrf_id, int *error)
6588 struct sockaddr *addr_touse;
6590 #if defined(INET) && defined(INET6)
6591 struct sockaddr_in sin;
6595 /* see if we're bound all already! */
6596 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6597 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6603 if (sa->sa_family == AF_INET6) {
6605 struct sockaddr_in6 *sin6;
6609 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6610 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6614 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6615 /* can only bind v6 on PF_INET6 sockets */
6616 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6621 sin6 = (struct sockaddr_in6 *)addr_touse;
6622 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6623 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6624 SCTP_IPV6_V6ONLY(inp)) {
6625 /* can't bind mapped-v4 on PF_INET sockets */
6626 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6630 in6_sin6_2_sin(&sin, sin6);
6631 addr_touse = (struct sockaddr *)&sin;
6637 if (sa->sa_family == AF_INET) {
6638 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6639 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6643 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6644 SCTP_IPV6_V6ONLY(inp)) {
6645 /* can't bind v4 on PF_INET sockets */
6646 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6653 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6654 * below is ever changed we may need to lock before calling
6655 * association level binding.
6657 if (assoc_id == 0) {
6658 /* delete the address */
6659 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6660 SCTP_DEL_IP_ADDRESS,
6664 * FIX: decide whether we allow assoc based bindx
6670 * returns the valid local address count for an assoc, taking into account
6674 sctp_local_addr_count(struct sctp_tcb *stcb)
6679 int ipv4_local_scope, ipv4_addr_legal;
6683 int local_scope, site_scope, ipv6_addr_legal;
6686 struct sctp_vrf *vrf;
6687 struct sctp_ifn *sctp_ifn;
6688 struct sctp_ifa *sctp_ifa;
6691 /* Turn on all the appropriate scopes */
6692 loopback_scope = stcb->asoc.scope.loopback_scope;
6694 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6695 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6698 local_scope = stcb->asoc.scope.local_scope;
6699 site_scope = stcb->asoc.scope.site_scope;
6700 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6702 SCTP_IPI_ADDR_RLOCK();
6703 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6705 /* no vrf, no addresses */
6706 SCTP_IPI_ADDR_RUNLOCK();
6709 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6711 * bound all case: go through all ifns on the vrf
6713 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6714 if ((loopback_scope == 0) &&
6715 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6718 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6719 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6721 switch (sctp_ifa->address.sa.sa_family) {
6724 if (ipv4_addr_legal) {
6725 struct sockaddr_in *sin;
6727 sin = &sctp_ifa->address.sin;
6728 if (sin->sin_addr.s_addr == 0) {
6735 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6736 &sin->sin_addr) != 0) {
6739 if ((ipv4_local_scope == 0) &&
6740 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6743 /* count this one */
6752 if (ipv6_addr_legal) {
6753 struct sockaddr_in6 *sin6;
6755 sin6 = &sctp_ifa->address.sin6;
6756 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6759 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6760 &sin6->sin6_addr) != 0) {
6763 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6764 if (local_scope == 0)
6766 if (sin6->sin6_scope_id == 0) {
6767 if (sa6_recoverscope(sin6) != 0)
6785 if ((site_scope == 0) &&
6786 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6789 /* count this one */
6804 struct sctp_laddr *laddr;
6806 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6808 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6811 /* count this one */
6815 SCTP_IPI_ADDR_RUNLOCK();
6819 #if defined(SCTP_LOCAL_TRACE_BUF)
6822 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)
6824 uint32_t saveindex, newindex;
6827 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6828 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6831 newindex = saveindex + 1;
6833 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6834 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6837 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6838 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6839 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6840 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6841 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6842 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6843 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6844 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6849 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *ignored,
6850 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
6855 struct ip6_hdr *ip6;
6858 struct mbuf *sp, *last;
6859 struct udphdr *uhdr;
6862 if ((m->m_flags & M_PKTHDR) == 0) {
6863 /* Can't handle one that is not a pkt hdr */
6866 /* Pull the src port */
6867 iph = mtod(m, struct ip *);
6868 uhdr = (struct udphdr *)((caddr_t)iph + off);
6869 port = uhdr->uh_sport;
6871 * Split out the mbuf chain. Leave the IP header in m, place the
6874 sp = m_split(m, off, M_NOWAIT);
6876 /* Gak, drop packet, we can't do a split */
6879 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6880 /* Gak, packet can't have an SCTP header in it - too small */
6884 /* Now pull up the UDP header and SCTP header together */
6885 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6887 /* Gak pullup failed */
6890 /* Trim out the UDP header */
6891 m_adj(sp, sizeof(struct udphdr));
6893 /* Now reconstruct the mbuf chain */
6894 for (last = m; last->m_next; last = last->m_next);
6896 m->m_pkthdr.len += sp->m_pkthdr.len;
6897 iph = mtod(m, struct ip *);
6898 switch (iph->ip_v) {
6901 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
6902 sctp_input_with_port(m, off, port);
6906 case IPV6_VERSION >> 4:
6907 ip6 = mtod(m, struct ip6_hdr *);
6908 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
6909 sctp6_input_with_port(&m, &off, port);
6922 sctp_over_udp_stop(void)
6925 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6929 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
6930 soclose(SCTP_BASE_INFO(udp4_tun_socket));
6931 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
6935 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
6936 soclose(SCTP_BASE_INFO(udp6_tun_socket));
6937 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
6943 sctp_over_udp_start(void)
6949 struct sockaddr_in sin;
6953 struct sockaddr_in6 sin6;
6957 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6960 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
6961 if (ntohs(port) == 0) {
6962 /* Must have a port set */
6966 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
6967 /* Already running -- must stop first */
6972 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
6973 /* Already running -- must stop first */
6978 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
6979 SOCK_DGRAM, IPPROTO_UDP,
6980 curthread->td_ucred, curthread))) {
6981 sctp_over_udp_stop();
6984 /* Call the special UDP hook. */
6985 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
6986 sctp_recv_udp_tunneled_packet, NULL))) {
6987 sctp_over_udp_stop();
6990 /* Ok, we have a socket, bind it to the port. */
6991 memset(&sin, 0, sizeof(struct sockaddr_in));
6992 sin.sin_len = sizeof(struct sockaddr_in);
6993 sin.sin_family = AF_INET;
6994 sin.sin_port = htons(port);
6995 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
6996 (struct sockaddr *)&sin, curthread))) {
6997 sctp_over_udp_stop();
7002 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7003 SOCK_DGRAM, IPPROTO_UDP,
7004 curthread->td_ucred, curthread))) {
7005 sctp_over_udp_stop();
7008 /* Call the special UDP hook. */
7009 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7010 sctp_recv_udp_tunneled_packet, NULL))) {
7011 sctp_over_udp_stop();
7014 /* Ok, we have a socket, bind it to the port. */
7015 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7016 sin6.sin6_len = sizeof(struct sockaddr_in6);
7017 sin6.sin6_family = AF_INET6;
7018 sin6.sin6_port = htons(port);
7019 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7020 (struct sockaddr *)&sin6, curthread))) {
7021 sctp_over_udp_stop();