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 const struct sctp_cc_functions sctp_cc_functions[];
62 extern const 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, size_t 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 = (uint32_t) 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_map_assoc_state(int kernel_state)
901 if (kernel_state & SCTP_STATE_WAS_ABORTED) {
902 user_state = SCTP_CLOSED;
903 } else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) {
904 user_state = SCTP_SHUTDOWN_PENDING;
906 switch (kernel_state & SCTP_STATE_MASK) {
907 case SCTP_STATE_EMPTY:
908 user_state = SCTP_CLOSED;
910 case SCTP_STATE_INUSE:
911 user_state = SCTP_CLOSED;
913 case SCTP_STATE_COOKIE_WAIT:
914 user_state = SCTP_COOKIE_WAIT;
916 case SCTP_STATE_COOKIE_ECHOED:
917 user_state = SCTP_COOKIE_ECHOED;
919 case SCTP_STATE_OPEN:
920 user_state = SCTP_ESTABLISHED;
922 case SCTP_STATE_SHUTDOWN_SENT:
923 user_state = SCTP_SHUTDOWN_SENT;
925 case SCTP_STATE_SHUTDOWN_RECEIVED:
926 user_state = SCTP_SHUTDOWN_RECEIVED;
928 case SCTP_STATE_SHUTDOWN_ACK_SENT:
929 user_state = SCTP_SHUTDOWN_ACK_SENT;
932 user_state = SCTP_CLOSED;
940 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
941 uint32_t override_tag, uint32_t vrf_id, uint16_t o_strms)
943 struct sctp_association *asoc;
946 * Anything set to zero is taken care of by the allocation routine's
951 * Up front select what scoping to apply on addresses I tell my peer
952 * Not sure what to do with these right now, we will need to come up
953 * with a way to set them. We may need to pass them through from the
954 * caller in the sctp_aloc_assoc() function.
958 #if defined(SCTP_DETAILED_STR_STATS)
964 /* init all variables to a known value. */
965 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
966 asoc->max_burst = inp->sctp_ep.max_burst;
967 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
968 asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
969 asoc->cookie_life = inp->sctp_ep.def_cookie_life;
970 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
971 asoc->ecn_supported = inp->ecn_supported;
972 asoc->prsctp_supported = inp->prsctp_supported;
973 asoc->idata_supported = inp->idata_supported;
974 asoc->auth_supported = inp->auth_supported;
975 asoc->asconf_supported = inp->asconf_supported;
976 asoc->reconfig_supported = inp->reconfig_supported;
977 asoc->nrsack_supported = inp->nrsack_supported;
978 asoc->pktdrop_supported = inp->pktdrop_supported;
979 asoc->idata_supported = inp->idata_supported;
980 asoc->sctp_cmt_pf = (uint8_t) 0;
981 asoc->sctp_frag_point = inp->sctp_frag_point;
982 asoc->sctp_features = inp->sctp_features;
983 asoc->default_dscp = inp->sctp_ep.default_dscp;
984 asoc->max_cwnd = inp->max_cwnd;
986 if (inp->sctp_ep.default_flowlabel) {
987 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
989 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
990 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
991 asoc->default_flowlabel &= 0x000fffff;
992 asoc->default_flowlabel |= 0x80000000;
994 asoc->default_flowlabel = 0;
998 asoc->sb_send_resv = 0;
1000 asoc->my_vtag = override_tag;
1002 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
1004 /* Get the nonce tags */
1005 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1006 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1007 asoc->vrf_id = vrf_id;
1009 #ifdef SCTP_ASOCLOG_OF_TSNS
1010 asoc->tsn_in_at = 0;
1011 asoc->tsn_out_at = 0;
1012 asoc->tsn_in_wrapped = 0;
1013 asoc->tsn_out_wrapped = 0;
1014 asoc->cumack_log_at = 0;
1015 asoc->cumack_log_atsnt = 0;
1017 #ifdef SCTP_FS_SPEC_LOG
1021 asoc->assoc_up_sent = 0;
1022 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
1023 sctp_select_initial_TSN(&inp->sctp_ep);
1024 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
1025 /* we are optimisitic here */
1026 asoc->peer_supports_nat = 0;
1027 asoc->sent_queue_retran_cnt = 0;
1030 asoc->last_net_cmt_send_started = NULL;
1032 /* This will need to be adjusted */
1033 asoc->last_acked_seq = asoc->init_seq_number - 1;
1034 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
1035 asoc->asconf_seq_in = asoc->last_acked_seq;
1037 /* here we are different, we hold the next one we expect */
1038 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
1040 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
1041 asoc->initial_rto = inp->sctp_ep.initial_rto;
1043 asoc->max_init_times = inp->sctp_ep.max_init_times;
1044 asoc->max_send_times = inp->sctp_ep.max_send_times;
1045 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
1046 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
1047 asoc->free_chunk_cnt = 0;
1049 asoc->iam_blocking = 0;
1050 asoc->context = inp->sctp_context;
1051 asoc->local_strreset_support = inp->local_strreset_support;
1052 asoc->def_send = inp->def_send;
1053 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1054 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
1055 asoc->pr_sctp_cnt = 0;
1056 asoc->total_output_queue_size = 0;
1058 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1059 asoc->scope.ipv6_addr_legal = 1;
1060 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1061 asoc->scope.ipv4_addr_legal = 1;
1063 asoc->scope.ipv4_addr_legal = 0;
1066 asoc->scope.ipv6_addr_legal = 0;
1067 asoc->scope.ipv4_addr_legal = 1;
1070 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1071 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1073 asoc->smallest_mtu = inp->sctp_frag_point;
1074 asoc->minrto = inp->sctp_ep.sctp_minrto;
1075 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1077 asoc->locked_on_sending = NULL;
1078 asoc->stream_locked_on = 0;
1079 asoc->ecn_echo_cnt_onq = 0;
1080 asoc->stream_locked = 0;
1082 asoc->send_sack = 1;
1084 LIST_INIT(&asoc->sctp_restricted_addrs);
1086 TAILQ_INIT(&asoc->nets);
1087 TAILQ_INIT(&asoc->pending_reply_queue);
1088 TAILQ_INIT(&asoc->asconf_ack_sent);
1089 /* Setup to fill the hb random cache at first HB */
1090 asoc->hb_random_idx = 4;
1092 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1094 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1095 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1097 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1098 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1101 * Now the stream parameters, here we allocate space for all streams
1102 * that we request by default.
1104 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1106 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1107 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1109 if (asoc->strmout == NULL) {
1110 /* big trouble no memory */
1111 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1114 for (i = 0; i < asoc->streamoutcnt; i++) {
1116 * inbound side must be set to 0xffff, also NOTE when we get
1117 * the INIT-ACK back (for INIT sender) we MUST reduce the
1118 * count (streamoutcnt) but first check if we sent to any of
1119 * the upper streams that were dropped (if some were). Those
1120 * that were dropped must be notified to the upper layer as
1123 asoc->strmout[i].next_sequence_send = 0x0;
1124 TAILQ_INIT(&asoc->strmout[i].outqueue);
1125 asoc->strmout[i].chunks_on_queues = 0;
1126 #if defined(SCTP_DETAILED_STR_STATS)
1127 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1128 asoc->strmout[i].abandoned_sent[j] = 0;
1129 asoc->strmout[i].abandoned_unsent[j] = 0;
1132 asoc->strmout[i].abandoned_sent[0] = 0;
1133 asoc->strmout[i].abandoned_unsent[0] = 0;
1135 asoc->strmout[i].stream_no = i;
1136 asoc->strmout[i].last_msg_incomplete = 0;
1137 asoc->strmout[i].state = SCTP_STREAM_OPENING;
1138 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL);
1140 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1142 /* Now the mapping array */
1143 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1144 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1146 if (asoc->mapping_array == NULL) {
1147 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1148 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1151 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1152 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1154 if (asoc->nr_mapping_array == NULL) {
1155 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1156 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1157 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1160 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1162 /* Now the init of the other outqueues */
1163 TAILQ_INIT(&asoc->free_chunks);
1164 TAILQ_INIT(&asoc->control_send_queue);
1165 TAILQ_INIT(&asoc->asconf_send_queue);
1166 TAILQ_INIT(&asoc->send_queue);
1167 TAILQ_INIT(&asoc->sent_queue);
1168 TAILQ_INIT(&asoc->resetHead);
1169 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1170 TAILQ_INIT(&asoc->asconf_queue);
1171 /* authentication fields */
1172 asoc->authinfo.random = NULL;
1173 asoc->authinfo.active_keyid = 0;
1174 asoc->authinfo.assoc_key = NULL;
1175 asoc->authinfo.assoc_keyid = 0;
1176 asoc->authinfo.recv_key = NULL;
1177 asoc->authinfo.recv_keyid = 0;
1178 LIST_INIT(&asoc->shared_keys);
1179 asoc->marked_retrans = 0;
1180 asoc->port = inp->sctp_ep.port;
1184 asoc->timoshutdown = 0;
1185 asoc->timoheartbeat = 0;
1186 asoc->timocookie = 0;
1187 asoc->timoshutdownack = 0;
1188 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1189 asoc->discontinuity_time = asoc->start_time;
1190 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1191 asoc->abandoned_unsent[i] = 0;
1192 asoc->abandoned_sent[i] = 0;
1195 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1196 * freed later when the association is freed.
1202 sctp_print_mapping_array(struct sctp_association *asoc)
1204 unsigned int i, limit;
1206 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1207 asoc->mapping_array_size,
1208 asoc->mapping_array_base_tsn,
1209 asoc->cumulative_tsn,
1210 asoc->highest_tsn_inside_map,
1211 asoc->highest_tsn_inside_nr_map);
1212 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1213 if (asoc->mapping_array[limit - 1] != 0) {
1217 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1218 for (i = 0; i < limit; i++) {
1219 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1223 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1224 if (asoc->nr_mapping_array[limit - 1]) {
1228 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1229 for (i = 0; i < limit; i++) {
1230 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1237 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1239 /* mapping array needs to grow */
1240 uint8_t *new_array1, *new_array2;
1243 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1244 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1245 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1246 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1247 /* can't get more, forget it */
1248 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1250 SCTP_FREE(new_array1, SCTP_M_MAP);
1253 SCTP_FREE(new_array2, SCTP_M_MAP);
1257 memset(new_array1, 0, new_size);
1258 memset(new_array2, 0, new_size);
1259 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1260 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1261 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1262 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1263 asoc->mapping_array = new_array1;
1264 asoc->nr_mapping_array = new_array2;
1265 asoc->mapping_array_size = new_size;
1271 sctp_iterator_work(struct sctp_iterator *it)
1273 int iteration_count = 0;
1276 struct sctp_inpcb *tinp;
1278 SCTP_INP_INFO_RLOCK();
1279 SCTP_ITERATOR_LOCK();
1281 SCTP_INP_RLOCK(it->inp);
1282 SCTP_INP_DECR_REF(it->inp);
1284 if (it->inp == NULL) {
1285 /* iterator is complete */
1287 SCTP_ITERATOR_UNLOCK();
1288 SCTP_INP_INFO_RUNLOCK();
1289 if (it->function_atend != NULL) {
1290 (*it->function_atend) (it->pointer, it->val);
1292 SCTP_FREE(it, SCTP_M_ITER);
1299 SCTP_INP_RLOCK(it->inp);
1301 while (((it->pcb_flags) &&
1302 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1303 ((it->pcb_features) &&
1304 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1305 /* endpoint flags or features don't match, so keep looking */
1306 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1307 SCTP_INP_RUNLOCK(it->inp);
1308 goto done_with_iterator;
1311 it->inp = LIST_NEXT(it->inp, sctp_list);
1312 SCTP_INP_RUNLOCK(tinp);
1313 if (it->inp == NULL) {
1314 goto done_with_iterator;
1316 SCTP_INP_RLOCK(it->inp);
1318 /* now go through each assoc which is in the desired state */
1319 if (it->done_current_ep == 0) {
1320 if (it->function_inp != NULL)
1321 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1322 it->done_current_ep = 1;
1324 if (it->stcb == NULL) {
1325 /* run the per instance function */
1326 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1328 if ((inp_skip) || it->stcb == NULL) {
1329 if (it->function_inp_end != NULL) {
1330 inp_skip = (*it->function_inp_end) (it->inp,
1334 SCTP_INP_RUNLOCK(it->inp);
1338 SCTP_TCB_LOCK(it->stcb);
1339 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1340 /* not in the right state... keep looking */
1341 SCTP_TCB_UNLOCK(it->stcb);
1344 /* see if we have limited out the iterator loop */
1346 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1347 /* Pause to let others grab the lock */
1348 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1349 SCTP_TCB_UNLOCK(it->stcb);
1350 SCTP_INP_INCR_REF(it->inp);
1351 SCTP_INP_RUNLOCK(it->inp);
1352 SCTP_ITERATOR_UNLOCK();
1353 SCTP_INP_INFO_RUNLOCK();
1354 SCTP_INP_INFO_RLOCK();
1355 SCTP_ITERATOR_LOCK();
1356 if (sctp_it_ctl.iterator_flags) {
1357 /* We won't be staying here */
1358 SCTP_INP_DECR_REF(it->inp);
1359 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1360 if (sctp_it_ctl.iterator_flags &
1361 SCTP_ITERATOR_STOP_CUR_IT) {
1362 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1363 goto done_with_iterator;
1365 if (sctp_it_ctl.iterator_flags &
1366 SCTP_ITERATOR_STOP_CUR_INP) {
1367 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1370 /* If we reach here huh? */
1371 SCTP_PRINTF("Unknown it ctl flag %x\n",
1372 sctp_it_ctl.iterator_flags);
1373 sctp_it_ctl.iterator_flags = 0;
1375 SCTP_INP_RLOCK(it->inp);
1376 SCTP_INP_DECR_REF(it->inp);
1377 SCTP_TCB_LOCK(it->stcb);
1378 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1379 iteration_count = 0;
1381 /* run function on this one */
1382 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1385 * we lie here, it really needs to have its own type but
1386 * first I must verify that this won't effect things :-0
1388 if (it->no_chunk_output == 0)
1389 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1391 SCTP_TCB_UNLOCK(it->stcb);
1393 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1394 if (it->stcb == NULL) {
1395 /* Run last function */
1396 if (it->function_inp_end != NULL) {
1397 inp_skip = (*it->function_inp_end) (it->inp,
1403 SCTP_INP_RUNLOCK(it->inp);
1405 /* done with all assocs on this endpoint, move on to next endpoint */
1406 it->done_current_ep = 0;
1407 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1410 it->inp = LIST_NEXT(it->inp, sctp_list);
1412 if (it->inp == NULL) {
1413 goto done_with_iterator;
1415 goto select_a_new_ep;
1419 sctp_iterator_worker(void)
1421 struct sctp_iterator *it, *nit;
1423 /* This function is called with the WQ lock in place */
1425 sctp_it_ctl.iterator_running = 1;
1426 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1427 sctp_it_ctl.cur_it = it;
1428 /* now lets work on this one */
1429 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1430 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1431 CURVNET_SET(it->vn);
1432 sctp_iterator_work(it);
1433 sctp_it_ctl.cur_it = NULL;
1435 SCTP_IPI_ITERATOR_WQ_LOCK();
1436 /* sa_ignore FREED_MEMORY */
1438 sctp_it_ctl.iterator_running = 0;
1444 sctp_handle_addr_wq(void)
1446 /* deal with the ADDR wq from the rtsock calls */
1447 struct sctp_laddr *wi, *nwi;
1448 struct sctp_asconf_iterator *asc;
1450 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1451 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1453 /* Try later, no memory */
1454 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1455 (struct sctp_inpcb *)NULL,
1456 (struct sctp_tcb *)NULL,
1457 (struct sctp_nets *)NULL);
1460 LIST_INIT(&asc->list_of_work);
1463 SCTP_WQ_ADDR_LOCK();
1464 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1465 LIST_REMOVE(wi, sctp_nxt_addr);
1466 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1469 SCTP_WQ_ADDR_UNLOCK();
1471 if (asc->cnt == 0) {
1472 SCTP_FREE(asc, SCTP_M_ASC_IT);
1476 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
1477 sctp_asconf_iterator_stcb,
1478 NULL, /* No ep end for boundall */
1479 SCTP_PCB_FLAGS_BOUNDALL,
1480 SCTP_PCB_ANY_FEATURES,
1481 SCTP_ASOC_ANY_STATE,
1483 sctp_asconf_iterator_end, NULL, 0);
1485 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
1487 * Freeing if we are stopping or put back on the
1490 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
1491 sctp_asconf_iterator_end(asc, 0);
1493 SCTP_WQ_ADDR_LOCK();
1494 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
1495 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
1497 SCTP_WQ_ADDR_UNLOCK();
1498 SCTP_FREE(asc, SCTP_M_ASC_IT);
1505 sctp_timeout_handler(void *t)
1507 struct sctp_inpcb *inp;
1508 struct sctp_tcb *stcb;
1509 struct sctp_nets *net;
1510 struct sctp_timer *tmr;
1511 struct mbuf *op_err;
1513 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1520 tmr = (struct sctp_timer *)t;
1521 inp = (struct sctp_inpcb *)tmr->ep;
1522 stcb = (struct sctp_tcb *)tmr->tcb;
1523 net = (struct sctp_nets *)tmr->net;
1524 CURVNET_SET((struct vnet *)tmr->vnet);
1527 #ifdef SCTP_AUDITING_ENABLED
1528 sctp_audit_log(0xF0, (uint8_t) tmr->type);
1529 sctp_auditing(3, inp, stcb, net);
1532 /* sanity checks... */
1533 if (tmr->self != (void *)tmr) {
1535 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1541 tmr->stopped_from = 0xa001;
1542 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1544 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1550 tmr->stopped_from = 0xa002;
1551 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1555 /* if this is an iterator timeout, get the struct and clear inp */
1556 tmr->stopped_from = 0xa003;
1558 SCTP_INP_INCR_REF(inp);
1559 if ((inp->sctp_socket == NULL) &&
1560 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1561 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1562 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1563 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1564 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1565 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1566 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1567 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1568 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1570 SCTP_INP_DECR_REF(inp);
1575 tmr->stopped_from = 0xa004;
1577 atomic_add_int(&stcb->asoc.refcnt, 1);
1578 if (stcb->asoc.state == 0) {
1579 atomic_add_int(&stcb->asoc.refcnt, -1);
1581 SCTP_INP_DECR_REF(inp);
1588 tmr->stopped_from = 0xa005;
1589 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type);
1590 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1592 SCTP_INP_DECR_REF(inp);
1595 atomic_add_int(&stcb->asoc.refcnt, -1);
1600 tmr->stopped_from = 0xa006;
1603 SCTP_TCB_LOCK(stcb);
1604 atomic_add_int(&stcb->asoc.refcnt, -1);
1605 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1606 ((stcb->asoc.state == 0) ||
1607 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1608 SCTP_TCB_UNLOCK(stcb);
1610 SCTP_INP_DECR_REF(inp);
1616 /* record in stopped what t-o occured */
1617 tmr->stopped_from = type;
1619 /* mark as being serviced now */
1620 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1622 * Callout has been rescheduled.
1626 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1628 * Not active, so no action.
1632 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1634 /* call the handler for the appropriate timer type */
1636 case SCTP_TIMER_TYPE_ZERO_COPY:
1640 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1641 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1644 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1648 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1649 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1652 case SCTP_TIMER_TYPE_ADDR_WQ:
1653 sctp_handle_addr_wq();
1655 case SCTP_TIMER_TYPE_SEND:
1656 if ((stcb == NULL) || (inp == NULL)) {
1659 SCTP_STAT_INCR(sctps_timodata);
1660 stcb->asoc.timodata++;
1661 stcb->asoc.num_send_timers_up--;
1662 if (stcb->asoc.num_send_timers_up < 0) {
1663 stcb->asoc.num_send_timers_up = 0;
1665 SCTP_TCB_LOCK_ASSERT(stcb);
1666 if (sctp_t3rxt_timer(inp, stcb, net)) {
1667 /* no need to unlock on tcb its gone */
1671 SCTP_TCB_LOCK_ASSERT(stcb);
1672 #ifdef SCTP_AUDITING_ENABLED
1673 sctp_auditing(4, inp, stcb, net);
1675 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1676 if ((stcb->asoc.num_send_timers_up == 0) &&
1677 (stcb->asoc.sent_queue_cnt > 0)) {
1678 struct sctp_tmit_chunk *chk;
1681 * safeguard. If there on some on the sent queue
1682 * somewhere but no timers running something is
1683 * wrong... so we start a timer on the first chunk
1684 * on the send queue on whatever net it is sent to.
1686 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1687 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1691 case SCTP_TIMER_TYPE_INIT:
1692 if ((stcb == NULL) || (inp == NULL)) {
1695 SCTP_STAT_INCR(sctps_timoinit);
1696 stcb->asoc.timoinit++;
1697 if (sctp_t1init_timer(inp, stcb, net)) {
1698 /* no need to unlock on tcb its gone */
1701 /* We do output but not here */
1704 case SCTP_TIMER_TYPE_RECV:
1705 if ((stcb == NULL) || (inp == NULL)) {
1708 SCTP_STAT_INCR(sctps_timosack);
1709 stcb->asoc.timosack++;
1710 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1711 #ifdef SCTP_AUDITING_ENABLED
1712 sctp_auditing(4, inp, stcb, net);
1714 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1716 case SCTP_TIMER_TYPE_SHUTDOWN:
1717 if ((stcb == NULL) || (inp == NULL)) {
1720 if (sctp_shutdown_timer(inp, stcb, net)) {
1721 /* no need to unlock on tcb its gone */
1724 SCTP_STAT_INCR(sctps_timoshutdown);
1725 stcb->asoc.timoshutdown++;
1726 #ifdef SCTP_AUDITING_ENABLED
1727 sctp_auditing(4, inp, stcb, net);
1729 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1731 case SCTP_TIMER_TYPE_HEARTBEAT:
1732 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1735 SCTP_STAT_INCR(sctps_timoheartbeat);
1736 stcb->asoc.timoheartbeat++;
1737 if (sctp_heartbeat_timer(inp, stcb, net)) {
1738 /* no need to unlock on tcb its gone */
1741 #ifdef SCTP_AUDITING_ENABLED
1742 sctp_auditing(4, inp, stcb, net);
1744 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1745 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1746 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1749 case SCTP_TIMER_TYPE_COOKIE:
1750 if ((stcb == NULL) || (inp == NULL)) {
1753 if (sctp_cookie_timer(inp, stcb, net)) {
1754 /* no need to unlock on tcb its gone */
1757 SCTP_STAT_INCR(sctps_timocookie);
1758 stcb->asoc.timocookie++;
1759 #ifdef SCTP_AUDITING_ENABLED
1760 sctp_auditing(4, inp, stcb, net);
1763 * We consider T3 and Cookie timer pretty much the same with
1764 * respect to where from in chunk_output.
1766 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1768 case SCTP_TIMER_TYPE_NEWCOOKIE:
1776 SCTP_STAT_INCR(sctps_timosecret);
1777 (void)SCTP_GETTIME_TIMEVAL(&tv);
1778 SCTP_INP_WLOCK(inp);
1779 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1780 inp->sctp_ep.last_secret_number =
1781 inp->sctp_ep.current_secret_number;
1782 inp->sctp_ep.current_secret_number++;
1783 if (inp->sctp_ep.current_secret_number >=
1784 SCTP_HOW_MANY_SECRETS) {
1785 inp->sctp_ep.current_secret_number = 0;
1787 secret = (int)inp->sctp_ep.current_secret_number;
1788 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1789 inp->sctp_ep.secret_key[secret][i] =
1790 sctp_select_initial_TSN(&inp->sctp_ep);
1792 SCTP_INP_WUNLOCK(inp);
1793 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1797 case SCTP_TIMER_TYPE_PATHMTURAISE:
1798 if ((stcb == NULL) || (inp == NULL)) {
1801 SCTP_STAT_INCR(sctps_timopathmtu);
1802 sctp_pathmtu_timer(inp, stcb, net);
1805 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1806 if ((stcb == NULL) || (inp == NULL)) {
1809 if (sctp_shutdownack_timer(inp, stcb, net)) {
1810 /* no need to unlock on tcb its gone */
1813 SCTP_STAT_INCR(sctps_timoshutdownack);
1814 stcb->asoc.timoshutdownack++;
1815 #ifdef SCTP_AUDITING_ENABLED
1816 sctp_auditing(4, inp, stcb, net);
1818 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1820 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1821 if ((stcb == NULL) || (inp == NULL)) {
1824 SCTP_STAT_INCR(sctps_timoshutdownguard);
1825 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
1826 "Shutdown guard timer expired");
1827 sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
1828 /* no need to unlock on tcb its gone */
1831 case SCTP_TIMER_TYPE_STRRESET:
1832 if ((stcb == NULL) || (inp == NULL)) {
1835 if (sctp_strreset_timer(inp, stcb, net)) {
1836 /* no need to unlock on tcb its gone */
1839 SCTP_STAT_INCR(sctps_timostrmrst);
1840 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1842 case SCTP_TIMER_TYPE_ASCONF:
1843 if ((stcb == NULL) || (inp == NULL)) {
1846 if (sctp_asconf_timer(inp, stcb, net)) {
1847 /* no need to unlock on tcb its gone */
1850 SCTP_STAT_INCR(sctps_timoasconf);
1851 #ifdef SCTP_AUDITING_ENABLED
1852 sctp_auditing(4, inp, stcb, net);
1854 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1856 case SCTP_TIMER_TYPE_PRIM_DELETED:
1857 if ((stcb == NULL) || (inp == NULL)) {
1860 sctp_delete_prim_timer(inp, stcb, net);
1861 SCTP_STAT_INCR(sctps_timodelprim);
1864 case SCTP_TIMER_TYPE_AUTOCLOSE:
1865 if ((stcb == NULL) || (inp == NULL)) {
1868 SCTP_STAT_INCR(sctps_timoautoclose);
1869 sctp_autoclose_timer(inp, stcb, net);
1870 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1873 case SCTP_TIMER_TYPE_ASOCKILL:
1874 if ((stcb == NULL) || (inp == NULL)) {
1877 SCTP_STAT_INCR(sctps_timoassockill);
1878 /* Can we free it yet? */
1879 SCTP_INP_DECR_REF(inp);
1880 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
1881 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1882 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1883 so = SCTP_INP_SO(inp);
1884 atomic_add_int(&stcb->asoc.refcnt, 1);
1885 SCTP_TCB_UNLOCK(stcb);
1886 SCTP_SOCKET_LOCK(so, 1);
1887 SCTP_TCB_LOCK(stcb);
1888 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1890 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
1891 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1892 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1893 SCTP_SOCKET_UNLOCK(so, 1);
1896 * free asoc, always unlocks (or destroy's) so prevent
1897 * duplicate unlock or unlock of a free mtx :-0
1901 case SCTP_TIMER_TYPE_INPKILL:
1902 SCTP_STAT_INCR(sctps_timoinpkill);
1907 * special case, take away our increment since WE are the
1910 SCTP_INP_DECR_REF(inp);
1911 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
1912 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1913 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1914 SCTP_CALLED_FROM_INPKILL_TIMER);
1918 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1922 #ifdef SCTP_AUDITING_ENABLED
1923 sctp_audit_log(0xF1, (uint8_t) type);
1925 sctp_auditing(5, inp, stcb, net);
1927 if ((did_output) && stcb) {
1929 * Now we need to clean up the control chunk chain if an
1930 * ECNE is on it. It must be marked as UNSENT again so next
1931 * call will continue to send it until such time that we get
1932 * a CWR, to remove it. It is, however, less likely that we
1933 * will find a ecn echo on the chain though.
1935 sctp_fix_ecn_echo(&stcb->asoc);
1939 SCTP_TCB_UNLOCK(stcb);
1943 SCTP_INP_DECR_REF(inp);
1946 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type);
1951 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1952 struct sctp_nets *net)
1955 struct sctp_timer *tmr;
1957 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1962 SCTP_TCB_LOCK_ASSERT(stcb);
1965 case SCTP_TIMER_TYPE_ZERO_COPY:
1966 tmr = &inp->sctp_ep.zero_copy_timer;
1967 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1969 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1970 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1971 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1973 case SCTP_TIMER_TYPE_ADDR_WQ:
1974 /* Only 1 tick away :-) */
1975 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1976 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1978 case SCTP_TIMER_TYPE_SEND:
1979 /* Here we use the RTO timer */
1983 if ((stcb == NULL) || (net == NULL)) {
1986 tmr = &net->rxt_timer;
1987 if (net->RTO == 0) {
1988 rto_val = stcb->asoc.initial_rto;
1992 to_ticks = MSEC_TO_TICKS(rto_val);
1995 case SCTP_TIMER_TYPE_INIT:
1997 * Here we use the INIT timer default usually about 1
2000 if ((stcb == NULL) || (net == NULL)) {
2003 tmr = &net->rxt_timer;
2004 if (net->RTO == 0) {
2005 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2007 to_ticks = MSEC_TO_TICKS(net->RTO);
2010 case SCTP_TIMER_TYPE_RECV:
2012 * Here we use the Delayed-Ack timer value from the inp
2013 * ususually about 200ms.
2018 tmr = &stcb->asoc.dack_timer;
2019 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
2021 case SCTP_TIMER_TYPE_SHUTDOWN:
2022 /* Here we use the RTO of the destination. */
2023 if ((stcb == NULL) || (net == NULL)) {
2026 if (net->RTO == 0) {
2027 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2029 to_ticks = MSEC_TO_TICKS(net->RTO);
2031 tmr = &net->rxt_timer;
2033 case SCTP_TIMER_TYPE_HEARTBEAT:
2035 * the net is used here so that we can add in the RTO. Even
2036 * though we use a different timer. We also add the HB timer
2037 * PLUS a random jitter.
2039 if ((stcb == NULL) || (net == NULL)) {
2045 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2046 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2049 if (net->RTO == 0) {
2050 to_ticks = stcb->asoc.initial_rto;
2052 to_ticks = net->RTO;
2054 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2055 jitter = rndval % to_ticks;
2056 if (jitter >= (to_ticks >> 1)) {
2057 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
2059 to_ticks = to_ticks - jitter;
2061 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2062 !(net->dest_state & SCTP_ADDR_PF)) {
2063 to_ticks += net->heart_beat_delay;
2066 * Now we must convert the to_ticks that are now in
2069 to_ticks = MSEC_TO_TICKS(to_ticks);
2070 tmr = &net->hb_timer;
2073 case SCTP_TIMER_TYPE_COOKIE:
2075 * Here we can use the RTO timer from the network since one
2076 * RTT was compelete. If a retran happened then we will be
2077 * using the RTO initial value.
2079 if ((stcb == NULL) || (net == NULL)) {
2082 if (net->RTO == 0) {
2083 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2085 to_ticks = MSEC_TO_TICKS(net->RTO);
2087 tmr = &net->rxt_timer;
2089 case SCTP_TIMER_TYPE_NEWCOOKIE:
2091 * nothing needed but the endpoint here ususually about 60
2094 tmr = &inp->sctp_ep.signature_change;
2095 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2097 case SCTP_TIMER_TYPE_ASOCKILL:
2101 tmr = &stcb->asoc.strreset_timer;
2102 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2104 case SCTP_TIMER_TYPE_INPKILL:
2106 * The inp is setup to die. We re-use the signature_chage
2107 * timer since that has stopped and we are in the GONE
2110 tmr = &inp->sctp_ep.signature_change;
2111 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2113 case SCTP_TIMER_TYPE_PATHMTURAISE:
2115 * Here we use the value found in the EP for PMTU ususually
2118 if ((stcb == NULL) || (net == NULL)) {
2121 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2124 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2125 tmr = &net->pmtu_timer;
2127 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2128 /* Here we use the RTO of the destination */
2129 if ((stcb == NULL) || (net == NULL)) {
2132 if (net->RTO == 0) {
2133 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2135 to_ticks = MSEC_TO_TICKS(net->RTO);
2137 tmr = &net->rxt_timer;
2139 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2141 * Here we use the endpoints shutdown guard timer usually
2147 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2148 to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto);
2150 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2152 tmr = &stcb->asoc.shut_guard_timer;
2154 case SCTP_TIMER_TYPE_STRRESET:
2156 * Here the timer comes from the stcb but its value is from
2159 if ((stcb == NULL) || (net == NULL)) {
2162 if (net->RTO == 0) {
2163 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2165 to_ticks = MSEC_TO_TICKS(net->RTO);
2167 tmr = &stcb->asoc.strreset_timer;
2169 case SCTP_TIMER_TYPE_ASCONF:
2171 * Here the timer comes from the stcb but its value is from
2174 if ((stcb == NULL) || (net == NULL)) {
2177 if (net->RTO == 0) {
2178 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2180 to_ticks = MSEC_TO_TICKS(net->RTO);
2182 tmr = &stcb->asoc.asconf_timer;
2184 case SCTP_TIMER_TYPE_PRIM_DELETED:
2185 if ((stcb == NULL) || (net != NULL)) {
2188 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2189 tmr = &stcb->asoc.delete_prim_timer;
2191 case SCTP_TIMER_TYPE_AUTOCLOSE:
2195 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2197 * Really an error since stcb is NOT set to
2202 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2203 tmr = &stcb->asoc.autoclose_timer;
2206 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2211 if ((to_ticks <= 0) || (tmr == NULL)) {
2212 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2213 __func__, t_type, to_ticks, (void *)tmr);
2216 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2218 * we do NOT allow you to have it already running. if it is
2219 * we leave the current one up unchanged
2223 /* At this point we can proceed */
2224 if (t_type == SCTP_TIMER_TYPE_SEND) {
2225 stcb->asoc.num_send_timers_up++;
2227 tmr->stopped_from = 0;
2229 tmr->ep = (void *)inp;
2230 tmr->tcb = (void *)stcb;
2231 tmr->net = (void *)net;
2232 tmr->self = (void *)tmr;
2233 tmr->vnet = (void *)curvnet;
2234 tmr->ticks = sctp_get_tick_count();
2235 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2240 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2241 struct sctp_nets *net, uint32_t from)
2243 struct sctp_timer *tmr;
2245 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2251 SCTP_TCB_LOCK_ASSERT(stcb);
2254 case SCTP_TIMER_TYPE_ZERO_COPY:
2255 tmr = &inp->sctp_ep.zero_copy_timer;
2257 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2258 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2260 case SCTP_TIMER_TYPE_ADDR_WQ:
2261 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2263 case SCTP_TIMER_TYPE_SEND:
2264 if ((stcb == NULL) || (net == NULL)) {
2267 tmr = &net->rxt_timer;
2269 case SCTP_TIMER_TYPE_INIT:
2270 if ((stcb == NULL) || (net == NULL)) {
2273 tmr = &net->rxt_timer;
2275 case SCTP_TIMER_TYPE_RECV:
2279 tmr = &stcb->asoc.dack_timer;
2281 case SCTP_TIMER_TYPE_SHUTDOWN:
2282 if ((stcb == NULL) || (net == NULL)) {
2285 tmr = &net->rxt_timer;
2287 case SCTP_TIMER_TYPE_HEARTBEAT:
2288 if ((stcb == NULL) || (net == NULL)) {
2291 tmr = &net->hb_timer;
2293 case SCTP_TIMER_TYPE_COOKIE:
2294 if ((stcb == NULL) || (net == NULL)) {
2297 tmr = &net->rxt_timer;
2299 case SCTP_TIMER_TYPE_NEWCOOKIE:
2300 /* nothing needed but the endpoint here */
2301 tmr = &inp->sctp_ep.signature_change;
2303 * We re-use the newcookie timer for the INP kill timer. We
2304 * must assure that we do not kill it by accident.
2307 case SCTP_TIMER_TYPE_ASOCKILL:
2309 * Stop the asoc kill timer.
2314 tmr = &stcb->asoc.strreset_timer;
2317 case SCTP_TIMER_TYPE_INPKILL:
2319 * The inp is setup to die. We re-use the signature_chage
2320 * timer since that has stopped and we are in the GONE
2323 tmr = &inp->sctp_ep.signature_change;
2325 case SCTP_TIMER_TYPE_PATHMTURAISE:
2326 if ((stcb == NULL) || (net == NULL)) {
2329 tmr = &net->pmtu_timer;
2331 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2332 if ((stcb == NULL) || (net == NULL)) {
2335 tmr = &net->rxt_timer;
2337 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2341 tmr = &stcb->asoc.shut_guard_timer;
2343 case SCTP_TIMER_TYPE_STRRESET:
2347 tmr = &stcb->asoc.strreset_timer;
2349 case SCTP_TIMER_TYPE_ASCONF:
2353 tmr = &stcb->asoc.asconf_timer;
2355 case SCTP_TIMER_TYPE_PRIM_DELETED:
2359 tmr = &stcb->asoc.delete_prim_timer;
2361 case SCTP_TIMER_TYPE_AUTOCLOSE:
2365 tmr = &stcb->asoc.autoclose_timer;
2368 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2375 if ((tmr->type != t_type) && tmr->type) {
2377 * Ok we have a timer that is under joint use. Cookie timer
2378 * per chance with the SEND timer. We therefore are NOT
2379 * running the timer that the caller wants stopped. So just
2384 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2385 stcb->asoc.num_send_timers_up--;
2386 if (stcb->asoc.num_send_timers_up < 0) {
2387 stcb->asoc.num_send_timers_up = 0;
2391 tmr->stopped_from = from;
2392 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2397 sctp_calculate_len(struct mbuf *m)
2404 tlen += SCTP_BUF_LEN(at);
2405 at = SCTP_BUF_NEXT(at);
2411 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2412 struct sctp_association *asoc, uint32_t mtu)
2415 * Reset the P-MTU size on this association, this involves changing
2416 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2417 * allow the DF flag to be cleared.
2419 struct sctp_tmit_chunk *chk;
2420 unsigned int eff_mtu, ovh;
2422 asoc->smallest_mtu = mtu;
2423 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2424 ovh = SCTP_MIN_OVERHEAD;
2426 ovh = SCTP_MIN_V4_OVERHEAD;
2428 eff_mtu = mtu - ovh;
2429 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2430 if (chk->send_size > eff_mtu) {
2431 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2434 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2435 if (chk->send_size > eff_mtu) {
2436 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2443 * given an association and starting time of the current RTT period return
2444 * RTO in number of msecs net should point to the current network
2448 sctp_calculate_rto(struct sctp_tcb *stcb,
2449 struct sctp_association *asoc,
2450 struct sctp_nets *net,
2451 struct timeval *told,
2452 int safe, int rtt_from_sack)
2455 * given an association and the starting time of the current RTT
2456 * period (in value1/value2) return RTO in number of msecs.
2458 int32_t rtt; /* RTT in ms */
2460 int first_measure = 0;
2461 struct timeval now, then, *old;
2463 /* Copy it out for sparc64 */
2464 if (safe == sctp_align_unsafe_makecopy) {
2466 memcpy(&then, told, sizeof(struct timeval));
2467 } else if (safe == sctp_align_safe_nocopy) {
2471 SCTP_PRINTF("Huh, bad rto calc call\n");
2474 /************************/
2475 /* 1. calculate new RTT */
2476 /************************/
2477 /* get the current time */
2478 if (stcb->asoc.use_precise_time) {
2479 (void)SCTP_GETPTIME_TIMEVAL(&now);
2481 (void)SCTP_GETTIME_TIMEVAL(&now);
2483 timevalsub(&now, old);
2484 /* store the current RTT in us */
2485 net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec +
2486 (uint64_t) now.tv_usec;
2488 /* compute rtt in ms */
2489 rtt = (int32_t) (net->rtt / 1000);
2490 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2492 * Tell the CC module that a new update has just occurred
2495 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2498 * Do we need to determine the lan? We do this only on sacks i.e.
2499 * RTT being determined from data not non-data (HB/INIT->INITACK).
2501 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2502 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2503 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2504 net->lan_type = SCTP_LAN_INTERNET;
2506 net->lan_type = SCTP_LAN_LOCAL;
2509 /***************************/
2510 /* 2. update RTTVAR & SRTT */
2511 /***************************/
2513 * Compute the scaled average lastsa and the
2514 * scaled variance lastsv as described in van Jacobson
2515 * Paper "Congestion Avoidance and Control", Annex A.
2517 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2518 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2520 if (net->RTO_measured) {
2521 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2526 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2528 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2529 rto_logging(net, SCTP_LOG_RTTVAR);
2532 /* First RTO measurment */
2533 net->RTO_measured = 1;
2535 net->lastsa = rtt << SCTP_RTT_SHIFT;
2536 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2537 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2538 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2541 if (net->lastsv == 0) {
2542 net->lastsv = SCTP_CLOCK_GRANULARITY;
2544 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2545 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2546 (stcb->asoc.sat_network_lockout == 0)) {
2547 stcb->asoc.sat_network = 1;
2548 } else if ((!first_measure) && stcb->asoc.sat_network) {
2549 stcb->asoc.sat_network = 0;
2550 stcb->asoc.sat_network_lockout = 1;
2552 /* bound it, per C6/C7 in Section 5.3.1 */
2553 if (new_rto < stcb->asoc.minrto) {
2554 new_rto = stcb->asoc.minrto;
2556 if (new_rto > stcb->asoc.maxrto) {
2557 new_rto = stcb->asoc.maxrto;
2559 /* we are now returning the RTO */
2564 * return a pointer to a contiguous piece of data from the given mbuf chain
2565 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2566 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2567 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2570 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
2576 if ((off < 0) || (len <= 0))
2579 /* find the desired start location */
2580 while ((m != NULL) && (off > 0)) {
2581 if (off < SCTP_BUF_LEN(m))
2583 off -= SCTP_BUF_LEN(m);
2584 m = SCTP_BUF_NEXT(m);
2589 /* is the current mbuf large enough (eg. contiguous)? */
2590 if ((SCTP_BUF_LEN(m) - off) >= len) {
2591 return (mtod(m, caddr_t)+off);
2593 /* else, it spans more than one mbuf, so save a temp copy... */
2594 while ((m != NULL) && (len > 0)) {
2595 count = min(SCTP_BUF_LEN(m) - off, len);
2596 bcopy(mtod(m, caddr_t)+off, ptr, count);
2600 m = SCTP_BUF_NEXT(m);
2602 if ((m == NULL) && (len > 0))
2605 return ((caddr_t)in_ptr);
2611 struct sctp_paramhdr *
2612 sctp_get_next_param(struct mbuf *m,
2614 struct sctp_paramhdr *pull,
2617 /* This just provides a typed signature to Peter's Pull routine */
2618 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2624 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2626 struct mbuf *m_last;
2632 if (padlen <= M_TRAILINGSPACE(m)) {
2634 * The easy way. We hope the majority of the time we hit
2639 /* Hard way we must grow the mbuf chain */
2640 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2641 if (m_last == NULL) {
2644 SCTP_BUF_LEN(m_last) = 0;
2645 SCTP_BUF_NEXT(m_last) = NULL;
2646 SCTP_BUF_NEXT(m) = m_last;
2648 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2649 SCTP_BUF_LEN(m_last) += padlen;
2650 memset(dp, 0, padlen);
2655 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2657 /* find the last mbuf in chain and pad it */
2660 if (last_mbuf != NULL) {
2661 return (sctp_add_pad_tombuf(last_mbuf, padval));
2663 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2664 if (SCTP_BUF_NEXT(m_at) == NULL) {
2665 return (sctp_add_pad_tombuf(m_at, padval));
2673 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2674 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2675 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2680 struct mbuf *m_notify;
2681 struct sctp_assoc_change *sac;
2682 struct sctp_queued_to_read *control;
2683 unsigned int notif_len;
2687 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2695 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2696 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2697 if (abort != NULL) {
2698 abort_len = ntohs(abort->ch.chunk_length);
2702 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2703 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2704 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2705 notif_len += abort_len;
2707 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2708 if (m_notify == NULL) {
2709 /* Retry with smaller value. */
2710 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2711 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2712 if (m_notify == NULL) {
2716 SCTP_BUF_NEXT(m_notify) = NULL;
2717 sac = mtod(m_notify, struct sctp_assoc_change *);
2718 memset(sac, 0, notif_len);
2719 sac->sac_type = SCTP_ASSOC_CHANGE;
2721 sac->sac_length = sizeof(struct sctp_assoc_change);
2722 sac->sac_state = state;
2723 sac->sac_error = error;
2724 /* XXX verify these stream counts */
2725 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2726 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2727 sac->sac_assoc_id = sctp_get_associd(stcb);
2728 if (notif_len > sizeof(struct sctp_assoc_change)) {
2729 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2731 if (stcb->asoc.prsctp_supported == 1) {
2732 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2734 if (stcb->asoc.auth_supported == 1) {
2735 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2737 if (stcb->asoc.asconf_supported == 1) {
2738 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2740 if (stcb->asoc.idata_supported == 1) {
2741 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
2743 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2744 if (stcb->asoc.reconfig_supported == 1) {
2745 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2747 sac->sac_length += i;
2748 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2749 memcpy(sac->sac_info, abort, abort_len);
2750 sac->sac_length += abort_len;
2753 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2754 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2755 0, 0, stcb->asoc.context, 0, 0, 0,
2757 if (control != NULL) {
2758 control->length = SCTP_BUF_LEN(m_notify);
2759 /* not that we need this */
2760 control->tail_mbuf = m_notify;
2761 control->spec_flags = M_NOTIFICATION;
2762 sctp_add_to_readq(stcb->sctp_ep, stcb,
2764 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2767 sctp_m_freem(m_notify);
2771 * For 1-to-1 style sockets, we send up and error when an ABORT
2775 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2776 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2777 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2778 SOCK_LOCK(stcb->sctp_socket);
2780 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2781 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2782 stcb->sctp_socket->so_error = ECONNREFUSED;
2784 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2785 stcb->sctp_socket->so_error = ECONNRESET;
2788 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2789 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2790 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2791 stcb->sctp_socket->so_error = ETIMEDOUT;
2793 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2794 stcb->sctp_socket->so_error = ECONNABORTED;
2798 /* Wake ANY sleepers */
2799 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2800 so = SCTP_INP_SO(stcb->sctp_ep);
2802 atomic_add_int(&stcb->asoc.refcnt, 1);
2803 SCTP_TCB_UNLOCK(stcb);
2804 SCTP_SOCKET_LOCK(so, 1);
2805 SCTP_TCB_LOCK(stcb);
2806 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2807 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2808 SCTP_SOCKET_UNLOCK(so, 1);
2813 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2814 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2815 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2816 socantrcvmore_locked(stcb->sctp_socket);
2818 sorwakeup(stcb->sctp_socket);
2819 sowwakeup(stcb->sctp_socket);
2820 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2822 SCTP_SOCKET_UNLOCK(so, 1);
2828 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2829 struct sockaddr *sa, uint32_t error, int so_locked
2830 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2835 struct mbuf *m_notify;
2836 struct sctp_paddr_change *spc;
2837 struct sctp_queued_to_read *control;
2839 if ((stcb == NULL) ||
2840 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2841 /* event not enabled */
2844 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2845 if (m_notify == NULL)
2847 SCTP_BUF_LEN(m_notify) = 0;
2848 spc = mtod(m_notify, struct sctp_paddr_change *);
2849 memset(spc, 0, sizeof(struct sctp_paddr_change));
2850 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2852 spc->spc_length = sizeof(struct sctp_paddr_change);
2853 switch (sa->sa_family) {
2857 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
2858 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
2859 (struct sockaddr_in6 *)&spc->spc_aaddr);
2861 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2864 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2871 struct sockaddr_in6 *sin6;
2873 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2875 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2876 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2877 if (sin6->sin6_scope_id == 0) {
2878 /* recover scope_id for user */
2879 (void)sa6_recoverscope(sin6);
2881 /* clear embedded scope_id for user */
2882 in6_clearscope(&sin6->sin6_addr);
2892 spc->spc_state = state;
2893 spc->spc_error = error;
2894 spc->spc_assoc_id = sctp_get_associd(stcb);
2896 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2897 SCTP_BUF_NEXT(m_notify) = NULL;
2899 /* append to socket */
2900 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2901 0, 0, stcb->asoc.context, 0, 0, 0,
2903 if (control == NULL) {
2905 sctp_m_freem(m_notify);
2908 control->length = SCTP_BUF_LEN(m_notify);
2909 control->spec_flags = M_NOTIFICATION;
2910 /* not that we need this */
2911 control->tail_mbuf = m_notify;
2912 sctp_add_to_readq(stcb->sctp_ep, stcb,
2914 &stcb->sctp_socket->so_rcv, 1,
2915 SCTP_READ_LOCK_NOT_HELD,
2921 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2922 struct sctp_tmit_chunk *chk, int so_locked
2923 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2928 struct mbuf *m_notify;
2929 struct sctp_send_failed *ssf;
2930 struct sctp_send_failed_event *ssfe;
2931 struct sctp_queued_to_read *control;
2934 if ((stcb == NULL) ||
2935 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2936 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2937 /* event not enabled */
2940 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2941 length = sizeof(struct sctp_send_failed_event);
2943 length = sizeof(struct sctp_send_failed);
2945 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2946 if (m_notify == NULL)
2949 SCTP_BUF_LEN(m_notify) = 0;
2950 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2951 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2952 memset(ssfe, 0, length);
2953 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2955 ssfe->ssfe_flags = SCTP_DATA_SENT;
2957 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2959 length += chk->send_size;
2960 length -= sizeof(struct sctp_data_chunk);
2961 ssfe->ssfe_length = length;
2962 ssfe->ssfe_error = error;
2963 /* not exactly what the user sent in, but should be close :) */
2964 ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number;
2965 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2966 ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype;
2967 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2968 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2969 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2970 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2972 ssf = mtod(m_notify, struct sctp_send_failed *);
2973 memset(ssf, 0, length);
2974 ssf->ssf_type = SCTP_SEND_FAILED;
2976 ssf->ssf_flags = SCTP_DATA_SENT;
2978 ssf->ssf_flags = SCTP_DATA_UNSENT;
2980 length += chk->send_size;
2981 length -= sizeof(struct sctp_data_chunk);
2982 ssf->ssf_length = length;
2983 ssf->ssf_error = error;
2984 /* not exactly what the user sent in, but should be close :) */
2985 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2986 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2987 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2988 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2989 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2990 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2991 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2992 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2993 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2997 * trim off the sctp chunk header(it should be there)
2999 if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
3000 m_adj(chk->data, sizeof(struct sctp_data_chunk));
3001 sctp_mbuf_crush(chk->data);
3002 chk->send_size -= sizeof(struct sctp_data_chunk);
3005 SCTP_BUF_NEXT(m_notify) = chk->data;
3006 /* Steal off the mbuf */
3009 * For this case, we check the actual socket buffer, since the assoc
3010 * is going away we don't want to overfill the socket buffer for a
3013 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3014 sctp_m_freem(m_notify);
3017 /* append to socket */
3018 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3019 0, 0, stcb->asoc.context, 0, 0, 0,
3021 if (control == NULL) {
3023 sctp_m_freem(m_notify);
3026 control->spec_flags = M_NOTIFICATION;
3027 sctp_add_to_readq(stcb->sctp_ep, stcb,
3029 &stcb->sctp_socket->so_rcv, 1,
3030 SCTP_READ_LOCK_NOT_HELD,
3036 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3037 struct sctp_stream_queue_pending *sp, int so_locked
3038 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3043 struct mbuf *m_notify;
3044 struct sctp_send_failed *ssf;
3045 struct sctp_send_failed_event *ssfe;
3046 struct sctp_queued_to_read *control;
3049 if ((stcb == NULL) ||
3050 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3051 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3052 /* event not enabled */
3055 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3056 length = sizeof(struct sctp_send_failed_event);
3058 length = sizeof(struct sctp_send_failed);
3060 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
3061 if (m_notify == NULL) {
3065 SCTP_BUF_LEN(m_notify) = 0;
3066 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3067 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3068 memset(ssfe, 0, length);
3069 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3070 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3071 length += sp->length;
3072 ssfe->ssfe_length = length;
3073 ssfe->ssfe_error = error;
3074 /* not exactly what the user sent in, but should be close :) */
3075 ssfe->ssfe_info.snd_sid = sp->stream;
3076 if (sp->some_taken) {
3077 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3079 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3081 ssfe->ssfe_info.snd_ppid = sp->ppid;
3082 ssfe->ssfe_info.snd_context = sp->context;
3083 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3084 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3085 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
3087 ssf = mtod(m_notify, struct sctp_send_failed *);
3088 memset(ssf, 0, length);
3089 ssf->ssf_type = SCTP_SEND_FAILED;
3090 ssf->ssf_flags = SCTP_DATA_UNSENT;
3091 length += sp->length;
3092 ssf->ssf_length = length;
3093 ssf->ssf_error = error;
3094 /* not exactly what the user sent in, but should be close :) */
3095 ssf->ssf_info.sinfo_stream = sp->stream;
3096 ssf->ssf_info.sinfo_ssn = 0;
3097 if (sp->some_taken) {
3098 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3100 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3102 ssf->ssf_info.sinfo_ppid = sp->ppid;
3103 ssf->ssf_info.sinfo_context = sp->context;
3104 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3105 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3106 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
3108 SCTP_BUF_NEXT(m_notify) = sp->data;
3110 /* Steal off the mbuf */
3113 * For this case, we check the actual socket buffer, since the assoc
3114 * is going away we don't want to overfill the socket buffer for a
3117 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3118 sctp_m_freem(m_notify);
3121 /* append to socket */
3122 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3123 0, 0, stcb->asoc.context, 0, 0, 0,
3125 if (control == NULL) {
3127 sctp_m_freem(m_notify);
3130 control->spec_flags = M_NOTIFICATION;
3131 sctp_add_to_readq(stcb->sctp_ep, stcb,
3133 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3139 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3141 struct mbuf *m_notify;
3142 struct sctp_adaptation_event *sai;
3143 struct sctp_queued_to_read *control;
3145 if ((stcb == NULL) ||
3146 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3147 /* event not enabled */
3150 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3151 if (m_notify == NULL)
3154 SCTP_BUF_LEN(m_notify) = 0;
3155 sai = mtod(m_notify, struct sctp_adaptation_event *);
3156 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3157 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3159 sai->sai_length = sizeof(struct sctp_adaptation_event);
3160 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3161 sai->sai_assoc_id = sctp_get_associd(stcb);
3163 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3164 SCTP_BUF_NEXT(m_notify) = NULL;
3166 /* append to socket */
3167 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3168 0, 0, stcb->asoc.context, 0, 0, 0,
3170 if (control == NULL) {
3172 sctp_m_freem(m_notify);
3175 control->length = SCTP_BUF_LEN(m_notify);
3176 control->spec_flags = M_NOTIFICATION;
3177 /* not that we need this */
3178 control->tail_mbuf = m_notify;
3179 sctp_add_to_readq(stcb->sctp_ep, stcb,
3181 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3184 /* This always must be called with the read-queue LOCKED in the INP */
3186 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3187 uint32_t val, int so_locked
3188 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3193 struct mbuf *m_notify;
3194 struct sctp_pdapi_event *pdapi;
3195 struct sctp_queued_to_read *control;
3198 if ((stcb == NULL) ||
3199 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3200 /* event not enabled */
3203 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3206 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3207 if (m_notify == NULL)
3210 SCTP_BUF_LEN(m_notify) = 0;
3211 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3212 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3213 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3214 pdapi->pdapi_flags = 0;
3215 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3216 pdapi->pdapi_indication = error;
3217 pdapi->pdapi_stream = (val >> 16);
3218 pdapi->pdapi_seq = (val & 0x0000ffff);
3219 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3221 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3222 SCTP_BUF_NEXT(m_notify) = NULL;
3223 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3224 0, 0, stcb->asoc.context, 0, 0, 0,
3226 if (control == NULL) {
3228 sctp_m_freem(m_notify);
3231 control->spec_flags = M_NOTIFICATION;
3232 control->length = SCTP_BUF_LEN(m_notify);
3233 /* not that we need this */
3234 control->tail_mbuf = m_notify;
3235 control->held_length = 0;
3236 control->length = 0;
3237 sb = &stcb->sctp_socket->so_rcv;
3238 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3239 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3241 sctp_sballoc(stcb, sb, m_notify);
3242 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3243 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3245 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3246 control->end_added = 1;
3247 if (stcb->asoc.control_pdapi)
3248 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3250 /* we really should not see this case */
3251 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3253 if (stcb->sctp_ep && stcb->sctp_socket) {
3254 /* This should always be the case */
3255 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3258 so = SCTP_INP_SO(stcb->sctp_ep);
3260 atomic_add_int(&stcb->asoc.refcnt, 1);
3261 SCTP_TCB_UNLOCK(stcb);
3262 SCTP_SOCKET_LOCK(so, 1);
3263 SCTP_TCB_LOCK(stcb);
3264 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3265 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3266 SCTP_SOCKET_UNLOCK(so, 1);
3271 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3272 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3274 SCTP_SOCKET_UNLOCK(so, 1);
3281 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3283 struct mbuf *m_notify;
3284 struct sctp_shutdown_event *sse;
3285 struct sctp_queued_to_read *control;
3288 * For TCP model AND UDP connected sockets we will send an error up
3289 * when an SHUTDOWN completes
3291 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3292 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3293 /* mark socket closed for read/write and wakeup! */
3294 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3297 so = SCTP_INP_SO(stcb->sctp_ep);
3298 atomic_add_int(&stcb->asoc.refcnt, 1);
3299 SCTP_TCB_UNLOCK(stcb);
3300 SCTP_SOCKET_LOCK(so, 1);
3301 SCTP_TCB_LOCK(stcb);
3302 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3303 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3304 SCTP_SOCKET_UNLOCK(so, 1);
3308 socantsendmore(stcb->sctp_socket);
3309 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3310 SCTP_SOCKET_UNLOCK(so, 1);
3313 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3314 /* event not enabled */
3317 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3318 if (m_notify == NULL)
3321 sse = mtod(m_notify, struct sctp_shutdown_event *);
3322 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3323 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3325 sse->sse_length = sizeof(struct sctp_shutdown_event);
3326 sse->sse_assoc_id = sctp_get_associd(stcb);
3328 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3329 SCTP_BUF_NEXT(m_notify) = NULL;
3331 /* append to socket */
3332 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3333 0, 0, stcb->asoc.context, 0, 0, 0,
3335 if (control == NULL) {
3337 sctp_m_freem(m_notify);
3340 control->spec_flags = M_NOTIFICATION;
3341 control->length = SCTP_BUF_LEN(m_notify);
3342 /* not that we need this */
3343 control->tail_mbuf = m_notify;
3344 sctp_add_to_readq(stcb->sctp_ep, stcb,
3346 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3350 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3352 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3357 struct mbuf *m_notify;
3358 struct sctp_sender_dry_event *event;
3359 struct sctp_queued_to_read *control;
3361 if ((stcb == NULL) ||
3362 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3363 /* event not enabled */
3366 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3367 if (m_notify == NULL) {
3371 SCTP_BUF_LEN(m_notify) = 0;
3372 event = mtod(m_notify, struct sctp_sender_dry_event *);
3373 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3374 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3375 event->sender_dry_flags = 0;
3376 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3377 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3379 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3380 SCTP_BUF_NEXT(m_notify) = NULL;
3382 /* append to socket */
3383 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3384 0, 0, stcb->asoc.context, 0, 0, 0,
3386 if (control == NULL) {
3388 sctp_m_freem(m_notify);
3391 control->length = SCTP_BUF_LEN(m_notify);
3392 control->spec_flags = M_NOTIFICATION;
3393 /* not that we need this */
3394 control->tail_mbuf = m_notify;
3395 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3396 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3401 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3403 struct mbuf *m_notify;
3404 struct sctp_queued_to_read *control;
3405 struct sctp_stream_change_event *stradd;
3407 if ((stcb == NULL) ||
3408 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3409 /* event not enabled */
3412 if ((stcb->asoc.peer_req_out) && flag) {
3413 /* Peer made the request, don't tell the local user */
3414 stcb->asoc.peer_req_out = 0;
3417 stcb->asoc.peer_req_out = 0;
3418 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3419 if (m_notify == NULL)
3422 SCTP_BUF_LEN(m_notify) = 0;
3423 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3424 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3425 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3426 stradd->strchange_flags = flag;
3427 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3428 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3429 stradd->strchange_instrms = numberin;
3430 stradd->strchange_outstrms = numberout;
3431 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3432 SCTP_BUF_NEXT(m_notify) = NULL;
3433 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3435 sctp_m_freem(m_notify);
3438 /* append to socket */
3439 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3440 0, 0, stcb->asoc.context, 0, 0, 0,
3442 if (control == NULL) {
3444 sctp_m_freem(m_notify);
3447 control->spec_flags = M_NOTIFICATION;
3448 control->length = SCTP_BUF_LEN(m_notify);
3449 /* not that we need this */
3450 control->tail_mbuf = m_notify;
3451 sctp_add_to_readq(stcb->sctp_ep, stcb,
3453 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3457 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3459 struct mbuf *m_notify;
3460 struct sctp_queued_to_read *control;
3461 struct sctp_assoc_reset_event *strasoc;
3463 if ((stcb == NULL) ||
3464 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3465 /* event not enabled */
3468 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3469 if (m_notify == NULL)
3472 SCTP_BUF_LEN(m_notify) = 0;
3473 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3474 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3475 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3476 strasoc->assocreset_flags = flag;
3477 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3478 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3479 strasoc->assocreset_local_tsn = sending_tsn;
3480 strasoc->assocreset_remote_tsn = recv_tsn;
3481 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3482 SCTP_BUF_NEXT(m_notify) = NULL;
3483 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3485 sctp_m_freem(m_notify);
3488 /* append to socket */
3489 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3490 0, 0, stcb->asoc.context, 0, 0, 0,
3492 if (control == NULL) {
3494 sctp_m_freem(m_notify);
3497 control->spec_flags = M_NOTIFICATION;
3498 control->length = SCTP_BUF_LEN(m_notify);
3499 /* not that we need this */
3500 control->tail_mbuf = m_notify;
3501 sctp_add_to_readq(stcb->sctp_ep, stcb,
3503 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3509 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3510 int number_entries, uint16_t * list, int flag)
3512 struct mbuf *m_notify;
3513 struct sctp_queued_to_read *control;
3514 struct sctp_stream_reset_event *strreset;
3517 if ((stcb == NULL) ||
3518 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3519 /* event not enabled */
3522 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3523 if (m_notify == NULL)
3526 SCTP_BUF_LEN(m_notify) = 0;
3527 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3528 if (len > M_TRAILINGSPACE(m_notify)) {
3529 /* never enough room */
3530 sctp_m_freem(m_notify);
3533 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3534 memset(strreset, 0, len);
3535 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3536 strreset->strreset_flags = flag;
3537 strreset->strreset_length = len;
3538 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3539 if (number_entries) {
3542 for (i = 0; i < number_entries; i++) {
3543 strreset->strreset_stream_list[i] = ntohs(list[i]);
3546 SCTP_BUF_LEN(m_notify) = len;
3547 SCTP_BUF_NEXT(m_notify) = NULL;
3548 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3550 sctp_m_freem(m_notify);
3553 /* append to socket */
3554 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3555 0, 0, stcb->asoc.context, 0, 0, 0,
3557 if (control == NULL) {
3559 sctp_m_freem(m_notify);
3562 control->spec_flags = M_NOTIFICATION;
3563 control->length = SCTP_BUF_LEN(m_notify);
3564 /* not that we need this */
3565 control->tail_mbuf = m_notify;
3566 sctp_add_to_readq(stcb->sctp_ep, stcb,
3568 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3573 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3575 struct mbuf *m_notify;
3576 struct sctp_remote_error *sre;
3577 struct sctp_queued_to_read *control;
3578 unsigned int notif_len;
3581 if ((stcb == NULL) ||
3582 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3585 if (chunk != NULL) {
3586 chunk_len = ntohs(chunk->ch.chunk_length);
3590 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
3591 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3592 if (m_notify == NULL) {
3593 /* Retry with smaller value. */
3594 notif_len = (unsigned int)sizeof(struct sctp_remote_error);
3595 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3596 if (m_notify == NULL) {
3600 SCTP_BUF_NEXT(m_notify) = NULL;
3601 sre = mtod(m_notify, struct sctp_remote_error *);
3602 memset(sre, 0, notif_len);
3603 sre->sre_type = SCTP_REMOTE_ERROR;
3605 sre->sre_length = sizeof(struct sctp_remote_error);
3606 sre->sre_error = error;
3607 sre->sre_assoc_id = sctp_get_associd(stcb);
3608 if (notif_len > sizeof(struct sctp_remote_error)) {
3609 memcpy(sre->sre_data, chunk, chunk_len);
3610 sre->sre_length += chunk_len;
3612 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3613 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3614 0, 0, stcb->asoc.context, 0, 0, 0,
3616 if (control != NULL) {
3617 control->length = SCTP_BUF_LEN(m_notify);
3618 /* not that we need this */
3619 control->tail_mbuf = m_notify;
3620 control->spec_flags = M_NOTIFICATION;
3621 sctp_add_to_readq(stcb->sctp_ep, stcb,
3623 &stcb->sctp_socket->so_rcv, 1,
3624 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3626 sctp_m_freem(m_notify);
3632 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3633 uint32_t error, void *data, int so_locked
3634 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3639 if ((stcb == NULL) ||
3640 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3641 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3642 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3643 /* If the socket is gone we are out of here */
3646 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3649 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3650 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3651 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3652 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3653 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3654 /* Don't report these in front states */
3658 switch (notification) {
3659 case SCTP_NOTIFY_ASSOC_UP:
3660 if (stcb->asoc.assoc_up_sent == 0) {
3661 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3662 stcb->asoc.assoc_up_sent = 1;
3664 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3665 sctp_notify_adaptation_layer(stcb);
3667 if (stcb->asoc.auth_supported == 0) {
3668 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3672 case SCTP_NOTIFY_ASSOC_DOWN:
3673 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3675 case SCTP_NOTIFY_INTERFACE_DOWN:
3677 struct sctp_nets *net;
3679 net = (struct sctp_nets *)data;
3680 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3681 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3684 case SCTP_NOTIFY_INTERFACE_UP:
3686 struct sctp_nets *net;
3688 net = (struct sctp_nets *)data;
3689 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3690 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3693 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3695 struct sctp_nets *net;
3697 net = (struct sctp_nets *)data;
3698 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3699 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3702 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3703 sctp_notify_send_failed2(stcb, error,
3704 (struct sctp_stream_queue_pending *)data, so_locked);
3706 case SCTP_NOTIFY_SENT_DG_FAIL:
3707 sctp_notify_send_failed(stcb, 1, error,
3708 (struct sctp_tmit_chunk *)data, so_locked);
3710 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3711 sctp_notify_send_failed(stcb, 0, error,
3712 (struct sctp_tmit_chunk *)data, so_locked);
3714 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3718 val = *((uint32_t *) data);
3720 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3723 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3724 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3725 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3726 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3728 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3731 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3732 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3733 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3734 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3736 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3739 case SCTP_NOTIFY_ASSOC_RESTART:
3740 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3741 if (stcb->asoc.auth_supported == 0) {
3742 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3746 case SCTP_NOTIFY_STR_RESET_SEND:
3747 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN);
3749 case SCTP_NOTIFY_STR_RESET_RECV:
3750 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING);
3752 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3753 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3754 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3756 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3757 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3758 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3760 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3761 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3762 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3764 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3765 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3766 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3768 case SCTP_NOTIFY_ASCONF_ADD_IP:
3769 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3772 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3773 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3776 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3777 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3780 case SCTP_NOTIFY_PEER_SHUTDOWN:
3781 sctp_notify_shutdown_event(stcb);
3783 case SCTP_NOTIFY_AUTH_NEW_KEY:
3784 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3785 (uint16_t) (uintptr_t) data,
3788 case SCTP_NOTIFY_AUTH_FREE_KEY:
3789 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3790 (uint16_t) (uintptr_t) data,
3793 case SCTP_NOTIFY_NO_PEER_AUTH:
3794 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3795 (uint16_t) (uintptr_t) data,
3798 case SCTP_NOTIFY_SENDER_DRY:
3799 sctp_notify_sender_dry_event(stcb, so_locked);
3801 case SCTP_NOTIFY_REMOTE_ERROR:
3802 sctp_notify_remote_error(stcb, error, data);
3805 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3806 __func__, notification, notification);
3812 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3813 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3818 struct sctp_association *asoc;
3819 struct sctp_stream_out *outs;
3820 struct sctp_tmit_chunk *chk, *nchk;
3821 struct sctp_stream_queue_pending *sp, *nsp;
3828 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3829 /* already being freed */
3832 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3833 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3834 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3837 /* now through all the gunk freeing chunks */
3838 if (holds_lock == 0) {
3839 SCTP_TCB_SEND_LOCK(stcb);
3841 /* sent queue SHOULD be empty */
3842 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3843 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3844 asoc->sent_queue_cnt--;
3845 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3846 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3847 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3850 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3854 if (chk->data != NULL) {
3855 sctp_free_bufspace(stcb, asoc, chk, 1);
3856 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3857 error, chk, so_locked);
3859 sctp_m_freem(chk->data);
3863 sctp_free_a_chunk(stcb, chk, so_locked);
3864 /* sa_ignore FREED_MEMORY */
3866 /* pending send queue SHOULD be empty */
3867 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3868 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3869 asoc->send_queue_cnt--;
3870 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3871 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3874 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3877 if (chk->data != NULL) {
3878 sctp_free_bufspace(stcb, asoc, chk, 1);
3879 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3880 error, chk, so_locked);
3882 sctp_m_freem(chk->data);
3886 sctp_free_a_chunk(stcb, chk, so_locked);
3887 /* sa_ignore FREED_MEMORY */
3889 for (i = 0; i < asoc->streamoutcnt; i++) {
3890 /* For each stream */
3891 outs = &asoc->strmout[i];
3892 /* clean up any sends there */
3893 asoc->locked_on_sending = NULL;
3894 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3895 asoc->stream_queue_cnt--;
3896 TAILQ_REMOVE(&outs->outqueue, sp, next);
3897 sctp_free_spbufspace(stcb, asoc, sp);
3899 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3900 error, (void *)sp, so_locked);
3902 sctp_m_freem(sp->data);
3904 sp->tail_mbuf = NULL;
3909 sctp_free_remote_addr(sp->net);
3912 /* Free the chunk */
3913 sctp_free_a_strmoq(stcb, sp, so_locked);
3914 /* sa_ignore FREED_MEMORY */
3918 if (holds_lock == 0) {
3919 SCTP_TCB_SEND_UNLOCK(stcb);
3924 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3925 struct sctp_abort_chunk *abort, int so_locked
3926 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3934 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3935 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3936 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3937 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3939 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3940 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3941 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3944 /* Tell them we lost the asoc */
3945 sctp_report_all_outbound(stcb, error, 1, so_locked);
3947 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3949 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3954 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3955 struct mbuf *m, int iphlen,
3956 struct sockaddr *src, struct sockaddr *dst,
3957 struct sctphdr *sh, struct mbuf *op_err,
3958 uint8_t mflowtype, uint32_t mflowid,
3959 uint32_t vrf_id, uint16_t port)
3963 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3970 /* We have a TCB to abort, send notification too */
3971 vtag = stcb->asoc.peer_vtag;
3972 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3973 /* get the assoc vrf id and table id */
3974 vrf_id = stcb->asoc.vrf_id;
3975 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3977 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3978 mflowtype, mflowid, inp->fibnum,
3981 /* Ok, now lets free it */
3982 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3983 so = SCTP_INP_SO(inp);
3984 atomic_add_int(&stcb->asoc.refcnt, 1);
3985 SCTP_TCB_UNLOCK(stcb);
3986 SCTP_SOCKET_LOCK(so, 1);
3987 SCTP_TCB_LOCK(stcb);
3988 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3990 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3991 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3992 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3993 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3995 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
3996 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
3997 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3998 SCTP_SOCKET_UNLOCK(so, 1);
4003 #ifdef SCTP_ASOCLOG_OF_TSNS
4005 sctp_print_out_track_log(struct sctp_tcb *stcb)
4010 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
4011 SCTP_PRINTF("IN bound TSN log-aaa\n");
4012 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4013 SCTP_PRINTF("None rcvd\n");
4016 if (stcb->asoc.tsn_in_wrapped) {
4017 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4018 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4019 stcb->asoc.in_tsnlog[i].tsn,
4020 stcb->asoc.in_tsnlog[i].strm,
4021 stcb->asoc.in_tsnlog[i].seq,
4022 stcb->asoc.in_tsnlog[i].flgs,
4023 stcb->asoc.in_tsnlog[i].sz);
4026 if (stcb->asoc.tsn_in_at) {
4027 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4028 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4029 stcb->asoc.in_tsnlog[i].tsn,
4030 stcb->asoc.in_tsnlog[i].strm,
4031 stcb->asoc.in_tsnlog[i].seq,
4032 stcb->asoc.in_tsnlog[i].flgs,
4033 stcb->asoc.in_tsnlog[i].sz);
4037 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4038 if ((stcb->asoc.tsn_out_at == 0) &&
4039 (stcb->asoc.tsn_out_wrapped == 0)) {
4040 SCTP_PRINTF("None sent\n");
4042 if (stcb->asoc.tsn_out_wrapped) {
4043 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4044 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4045 stcb->asoc.out_tsnlog[i].tsn,
4046 stcb->asoc.out_tsnlog[i].strm,
4047 stcb->asoc.out_tsnlog[i].seq,
4048 stcb->asoc.out_tsnlog[i].flgs,
4049 stcb->asoc.out_tsnlog[i].sz);
4052 if (stcb->asoc.tsn_out_at) {
4053 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4054 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4055 stcb->asoc.out_tsnlog[i].tsn,
4056 stcb->asoc.out_tsnlog[i].strm,
4057 stcb->asoc.out_tsnlog[i].seq,
4058 stcb->asoc.out_tsnlog[i].flgs,
4059 stcb->asoc.out_tsnlog[i].sz);
4068 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4069 struct mbuf *op_err,
4071 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4076 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4081 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4082 so = SCTP_INP_SO(inp);
4085 /* Got to have a TCB */
4086 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4087 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4088 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4089 SCTP_CALLED_DIRECTLY_NOCMPSET);
4094 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
4096 /* notify the ulp */
4097 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4098 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4100 /* notify the peer */
4101 sctp_send_abort_tcb(stcb, op_err, so_locked);
4102 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4103 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
4104 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4105 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4107 /* now free the asoc */
4108 #ifdef SCTP_ASOCLOG_OF_TSNS
4109 sctp_print_out_track_log(stcb);
4111 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4113 atomic_add_int(&stcb->asoc.refcnt, 1);
4114 SCTP_TCB_UNLOCK(stcb);
4115 SCTP_SOCKET_LOCK(so, 1);
4116 SCTP_TCB_LOCK(stcb);
4117 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4120 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4121 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4122 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4124 SCTP_SOCKET_UNLOCK(so, 1);
4130 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4131 struct sockaddr *src, struct sockaddr *dst,
4132 struct sctphdr *sh, struct sctp_inpcb *inp,
4134 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4135 uint32_t vrf_id, uint16_t port)
4137 struct sctp_chunkhdr *ch, chunk_buf;
4138 unsigned int chk_length;
4139 int contains_init_chunk;
4141 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4142 /* Generate a TO address for future reference */
4143 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4144 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4145 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4146 SCTP_CALLED_DIRECTLY_NOCMPSET);
4149 contains_init_chunk = 0;
4150 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4151 sizeof(*ch), (uint8_t *) & chunk_buf);
4152 while (ch != NULL) {
4153 chk_length = ntohs(ch->chunk_length);
4154 if (chk_length < sizeof(*ch)) {
4155 /* break to abort land */
4158 switch (ch->chunk_type) {
4160 contains_init_chunk = 1;
4162 case SCTP_PACKET_DROPPED:
4163 /* we don't respond to pkt-dropped */
4165 case SCTP_ABORT_ASSOCIATION:
4166 /* we don't respond with an ABORT to an ABORT */
4168 case SCTP_SHUTDOWN_COMPLETE:
4170 * we ignore it since we are not waiting for it and
4174 case SCTP_SHUTDOWN_ACK:
4175 sctp_send_shutdown_complete2(src, dst, sh,
4176 mflowtype, mflowid, fibnum,
4182 offset += SCTP_SIZE32(chk_length);
4183 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4184 sizeof(*ch), (uint8_t *) & chunk_buf);
4186 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4187 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4188 (contains_init_chunk == 0))) {
4189 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4190 mflowtype, mflowid, fibnum,
4196 * check the inbound datagram to make sure there is not an abort inside it,
4197 * if there is return 1, else return 0.
4200 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
4202 struct sctp_chunkhdr *ch;
4203 struct sctp_init_chunk *init_chk, chunk_buf;
4205 unsigned int chk_length;
4207 offset = iphlen + sizeof(struct sctphdr);
4208 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4209 (uint8_t *) & chunk_buf);
4210 while (ch != NULL) {
4211 chk_length = ntohs(ch->chunk_length);
4212 if (chk_length < sizeof(*ch)) {
4213 /* packet is probably corrupt */
4216 /* we seem to be ok, is it an abort? */
4217 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4218 /* yep, tell them */
4221 if (ch->chunk_type == SCTP_INITIATION) {
4222 /* need to update the Vtag */
4223 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4224 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
4225 if (init_chk != NULL) {
4226 *vtagfill = ntohl(init_chk->init.initiate_tag);
4229 /* Nope, move to the next chunk */
4230 offset += SCTP_SIZE32(chk_length);
4231 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4232 sizeof(*ch), (uint8_t *) & chunk_buf);
4238 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4239 * set (i.e. it's 0) so, create this function to compare link local scopes
4243 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4245 struct sockaddr_in6 a, b;
4251 if (a.sin6_scope_id == 0)
4252 if (sa6_recoverscope(&a)) {
4253 /* can't get scope, so can't match */
4256 if (b.sin6_scope_id == 0)
4257 if (sa6_recoverscope(&b)) {
4258 /* can't get scope, so can't match */
4261 if (a.sin6_scope_id != b.sin6_scope_id)
4268 * returns a sockaddr_in6 with embedded scope recovered and removed
4270 struct sockaddr_in6 *
4271 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4273 /* check and strip embedded scope junk */
4274 if (addr->sin6_family == AF_INET6) {
4275 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4276 if (addr->sin6_scope_id == 0) {
4278 if (!sa6_recoverscope(store)) {
4279 /* use the recovered scope */
4283 /* else, return the original "to" addr */
4284 in6_clearscope(&addr->sin6_addr);
4294 * are the two addresses the same? currently a "scopeless" check returns: 1
4298 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4302 if (sa1 == NULL || sa2 == NULL)
4305 /* must be the same family */
4306 if (sa1->sa_family != sa2->sa_family)
4309 switch (sa1->sa_family) {
4313 /* IPv6 addresses */
4314 struct sockaddr_in6 *sin6_1, *sin6_2;
4316 sin6_1 = (struct sockaddr_in6 *)sa1;
4317 sin6_2 = (struct sockaddr_in6 *)sa2;
4318 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4325 /* IPv4 addresses */
4326 struct sockaddr_in *sin_1, *sin_2;
4328 sin_1 = (struct sockaddr_in *)sa1;
4329 sin_2 = (struct sockaddr_in *)sa2;
4330 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4334 /* we don't do these... */
4340 sctp_print_address(struct sockaddr *sa)
4343 char ip6buf[INET6_ADDRSTRLEN];
4347 switch (sa->sa_family) {
4351 struct sockaddr_in6 *sin6;
4353 sin6 = (struct sockaddr_in6 *)sa;
4354 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4355 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4356 ntohs(sin6->sin6_port),
4357 sin6->sin6_scope_id);
4364 struct sockaddr_in *sin;
4367 sin = (struct sockaddr_in *)sa;
4368 p = (unsigned char *)&sin->sin_addr;
4369 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4370 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4381 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4382 struct sctp_inpcb *new_inp,
4383 struct sctp_tcb *stcb,
4387 * go through our old INP and pull off any control structures that
4388 * belong to stcb and move then to the new inp.
4390 struct socket *old_so, *new_so;
4391 struct sctp_queued_to_read *control, *nctl;
4392 struct sctp_readhead tmp_queue;
4396 old_so = old_inp->sctp_socket;
4397 new_so = new_inp->sctp_socket;
4398 TAILQ_INIT(&tmp_queue);
4399 error = sblock(&old_so->so_rcv, waitflags);
4402 * Gak, can't get sblock, we have a problem. data will be
4403 * left stranded.. and we don't dare look at it since the
4404 * other thread may be reading something. Oh well, its a
4405 * screwed up app that does a peeloff OR a accept while
4406 * reading from the main socket... actually its only the
4407 * peeloff() case, since I think read will fail on a
4408 * listening socket..
4412 /* lock the socket buffers */
4413 SCTP_INP_READ_LOCK(old_inp);
4414 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4415 /* Pull off all for out target stcb */
4416 if (control->stcb == stcb) {
4417 /* remove it we want it */
4418 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4419 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4422 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4423 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4425 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4426 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4427 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4429 m = SCTP_BUF_NEXT(m);
4433 SCTP_INP_READ_UNLOCK(old_inp);
4434 /* Remove the sb-lock on the old socket */
4436 sbunlock(&old_so->so_rcv);
4437 /* Now we move them over to the new socket buffer */
4438 SCTP_INP_READ_LOCK(new_inp);
4439 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4440 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4443 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4444 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4446 sctp_sballoc(stcb, &new_so->so_rcv, m);
4447 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4448 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4450 m = SCTP_BUF_NEXT(m);
4453 SCTP_INP_READ_UNLOCK(new_inp);
4457 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp)
4459 if (inp && inp->sctp_socket) {
4460 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4461 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4463 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4466 so = SCTP_INP_SO(inp);
4469 atomic_add_int(&stcb->asoc.refcnt, 1);
4470 SCTP_TCB_UNLOCK(stcb);
4472 SCTP_SOCKET_LOCK(so, 1);
4474 SCTP_TCB_LOCK(stcb);
4475 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4477 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4478 SCTP_SOCKET_UNLOCK(so, 1);
4483 sctp_sorwakeup(inp, inp->sctp_socket);
4484 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4486 SCTP_SOCKET_UNLOCK(so, 1);
4494 sctp_add_to_readq(struct sctp_inpcb *inp,
4495 struct sctp_tcb *stcb,
4496 struct sctp_queued_to_read *control,
4499 int inp_read_lock_held,
4501 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4507 * Here we must place the control on the end of the socket read
4508 * queue AND increment sb_cc so that select will work properly on
4511 struct mbuf *m, *prev = NULL;
4516 panic("Gak, inp NULL on add_to_readq");
4520 if (inp_read_lock_held == 0)
4521 SCTP_INP_READ_LOCK(inp);
4522 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4523 sctp_free_remote_addr(control->whoFrom);
4524 if (control->data) {
4525 sctp_m_freem(control->data);
4526 control->data = NULL;
4528 sctp_free_a_readq(stcb, control);
4529 if (inp_read_lock_held == 0)
4530 SCTP_INP_READ_UNLOCK(inp);
4533 if (!(control->spec_flags & M_NOTIFICATION)) {
4534 atomic_add_int(&inp->total_recvs, 1);
4535 if (!control->do_not_ref_stcb) {
4536 atomic_add_int(&stcb->total_recvs, 1);
4540 control->held_length = 0;
4541 control->length = 0;
4543 if (SCTP_BUF_LEN(m) == 0) {
4544 /* Skip mbufs with NO length */
4547 control->data = sctp_m_free(m);
4550 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4551 m = SCTP_BUF_NEXT(prev);
4554 control->tail_mbuf = prev;
4559 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4560 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4562 sctp_sballoc(stcb, sb, m);
4563 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4564 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4566 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4567 m = SCTP_BUF_NEXT(m);
4570 control->tail_mbuf = prev;
4572 /* Everything got collapsed out?? */
4573 sctp_free_remote_addr(control->whoFrom);
4574 sctp_free_a_readq(stcb, control);
4575 if (inp_read_lock_held == 0)
4576 SCTP_INP_READ_UNLOCK(inp);
4580 control->end_added = 1;
4582 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4583 control->on_read_q = 1;
4584 if (inp_read_lock_held == 0)
4585 SCTP_INP_READ_UNLOCK(inp);
4586 if (inp && inp->sctp_socket) {
4587 sctp_wakeup_the_read_socket(inp);
4593 sctp_append_to_readq(struct sctp_inpcb *inp,
4594 struct sctp_tcb *stcb,
4595 struct sctp_queued_to_read *control,
4602 * A partial delivery API event is underway. OR we are appending on
4603 * the reassembly queue.
4605 * If PDAPI this means we need to add m to the end of the data.
4606 * Increase the length in the control AND increment the sb_cc.
4607 * Otherwise sb is NULL and all we need to do is put it at the end
4608 * of the mbuf chain.
4611 struct mbuf *mm, *tail = NULL, *prev = NULL;
4614 SCTP_INP_READ_LOCK(inp);
4616 if (control == NULL) {
4619 SCTP_INP_READ_UNLOCK(inp);
4623 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) {
4624 SCTP_INP_READ_UNLOCK(inp);
4627 if (control->end_added) {
4628 /* huh this one is complete? */
4636 if (SCTP_BUF_LEN(mm) == 0) {
4637 /* Skip mbufs with NO lenght */
4640 m = sctp_m_free(mm);
4643 SCTP_BUF_NEXT(prev) = sctp_m_free(mm);
4644 mm = SCTP_BUF_NEXT(prev);
4649 len += SCTP_BUF_LEN(mm);
4651 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4652 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm));
4654 sctp_sballoc(stcb, sb, mm);
4655 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4656 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4659 mm = SCTP_BUF_NEXT(mm);
4664 /* Really there should always be a prev */
4666 /* Huh nothing left? */
4668 panic("Nothing left to add?");
4675 if (control->tail_mbuf) {
4677 SCTP_BUF_NEXT(control->tail_mbuf) = m;
4678 control->tail_mbuf = tail;
4682 if (control->data != NULL) {
4683 panic("This should NOT happen");
4687 control->tail_mbuf = tail;
4689 atomic_add_int(&control->length, len);
4691 /* message is complete */
4692 if (stcb && (control == stcb->asoc.control_pdapi)) {
4693 stcb->asoc.control_pdapi = NULL;
4695 control->held_length = 0;
4696 control->end_added = 1;
4699 control->do_not_ref_stcb = 1;
4702 * When we are appending in partial delivery, the cum-ack is used
4703 * for the actual pd-api highest tsn on this mbuf. The true cum-ack
4704 * is populated in the outbound sinfo structure from the true cumack
4705 * if the association exists...
4707 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack;
4709 SCTP_INP_READ_UNLOCK(inp);
4711 if (inp && inp->sctp_socket) {
4712 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4713 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4715 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4718 so = SCTP_INP_SO(inp);
4720 atomic_add_int(&stcb->asoc.refcnt, 1);
4721 SCTP_TCB_UNLOCK(stcb);
4723 SCTP_SOCKET_LOCK(so, 1);
4725 SCTP_TCB_LOCK(stcb);
4726 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4728 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4729 SCTP_SOCKET_UNLOCK(so, 1);
4733 sctp_sorwakeup(inp, inp->sctp_socket);
4734 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4735 SCTP_SOCKET_UNLOCK(so, 1);
4744 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4745 *************ALTERNATE ROUTING CODE
4748 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4749 *************ALTERNATE ROUTING CODE
4753 sctp_generate_cause(uint16_t code, char *info)
4756 struct sctp_gen_error_cause *cause;
4760 if ((code == 0) || (info == NULL)) {
4763 info_len = strlen(info);
4764 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
4767 len = (uint16_t) (sizeof(struct sctp_paramhdr) + info_len);
4768 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4770 SCTP_BUF_LEN(m) = len;
4771 cause = mtod(m, struct sctp_gen_error_cause *);
4772 cause->code = htons(code);
4773 cause->length = htons(len);
4774 memcpy(cause->info, info, info_len);
4780 sctp_generate_no_user_data_cause(uint32_t tsn)
4783 struct sctp_error_no_user_data *no_user_data_cause;
4786 len = (uint16_t) sizeof(struct sctp_error_no_user_data);
4787 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4789 SCTP_BUF_LEN(m) = len;
4790 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4791 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4792 no_user_data_cause->cause.length = htons(len);
4793 no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */
4798 #ifdef SCTP_MBCNT_LOGGING
4800 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4801 struct sctp_tmit_chunk *tp1, int chk_cnt)
4803 if (tp1->data == NULL) {
4806 asoc->chunks_on_out_queue -= chk_cnt;
4807 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4808 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4809 asoc->total_output_queue_size,
4814 if (asoc->total_output_queue_size >= tp1->book_size) {
4815 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4817 asoc->total_output_queue_size = 0;
4820 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4821 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4822 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4823 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4825 stcb->sctp_socket->so_snd.sb_cc = 0;
4834 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4835 uint8_t sent, int so_locked
4836 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4841 struct sctp_stream_out *strq;
4842 struct sctp_tmit_chunk *chk = NULL, *tp2;
4843 struct sctp_stream_queue_pending *sp;
4844 uint16_t stream = 0, seq = 0;
4845 uint8_t foundeom = 0;
4848 int do_wakeup_routine = 0;
4850 stream = tp1->rec.data.stream_number;
4851 seq = tp1->rec.data.stream_seq;
4852 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
4853 stcb->asoc.abandoned_sent[0]++;
4854 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4855 stcb->asoc.strmout[stream].abandoned_sent[0]++;
4856 #if defined(SCTP_DETAILED_STR_STATS)
4857 stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4860 stcb->asoc.abandoned_unsent[0]++;
4861 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4862 stcb->asoc.strmout[stream].abandoned_unsent[0]++;
4863 #if defined(SCTP_DETAILED_STR_STATS)
4864 stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4868 ret_sz += tp1->book_size;
4869 if (tp1->data != NULL) {
4870 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4871 sctp_flight_size_decrease(tp1);
4872 sctp_total_flight_decrease(stcb, tp1);
4874 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4875 stcb->asoc.peers_rwnd += tp1->send_size;
4876 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4878 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4880 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4883 sctp_m_freem(tp1->data);
4886 do_wakeup_routine = 1;
4887 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4888 stcb->asoc.sent_queue_cnt_removeable--;
4891 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4892 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4893 SCTP_DATA_NOT_FRAG) {
4894 /* not frag'ed we ae done */
4897 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4898 /* end of frag, we are done */
4903 * Its a begin or middle piece, we must mark all of
4907 tp1 = TAILQ_NEXT(tp1, sctp_next);
4909 } while (tp1 && notdone);
4910 if (foundeom == 0) {
4912 * The multi-part message was scattered across the send and
4915 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4916 if ((tp1->rec.data.stream_number != stream) ||
4917 (tp1->rec.data.stream_seq != seq)) {
4921 * save to chk in case we have some on stream out
4922 * queue. If so and we have an un-transmitted one we
4923 * don't have to fudge the TSN.
4926 ret_sz += tp1->book_size;
4927 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4929 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4931 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4934 sctp_m_freem(tp1->data);
4937 /* No flight involved here book the size to 0 */
4939 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4942 do_wakeup_routine = 1;
4943 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4944 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4946 * on to the sent queue so we can wait for it to be
4949 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4951 stcb->asoc.send_queue_cnt--;
4952 stcb->asoc.sent_queue_cnt++;
4955 if (foundeom == 0) {
4957 * Still no eom found. That means there is stuff left on the
4958 * stream out queue.. yuck.
4960 SCTP_TCB_SEND_LOCK(stcb);
4961 strq = &stcb->asoc.strmout[stream];
4962 sp = TAILQ_FIRST(&strq->outqueue);
4964 sp->discard_rest = 1;
4966 * We may need to put a chunk on the queue that
4967 * holds the TSN that would have been sent with the
4971 /* Yep, we have to */
4972 sctp_alloc_a_chunk(stcb, chk);
4975 * we are hosed. All we can do is
4976 * nothing.. which will cause an
4977 * abort if the peer is paying
4982 memset(chk, 0, sizeof(*chk));
4983 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG;
4984 chk->sent = SCTP_FORWARD_TSN_SKIP;
4985 chk->asoc = &stcb->asoc;
4986 chk->rec.data.stream_seq = strq->next_sequence_send;
4987 chk->rec.data.stream_number = sp->stream;
4988 chk->rec.data.payloadtype = sp->ppid;
4989 chk->rec.data.context = sp->context;
4990 chk->flags = sp->act_flags;
4992 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4993 strq->chunks_on_queues++;
4994 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4995 stcb->asoc.sent_queue_cnt++;
4996 stcb->asoc.pr_sctp_cnt++;
4998 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
5000 strq->next_sequence_send++;
5004 * Pull any data to free up the SB and allow
5005 * sender to "add more" while we will throw
5008 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
5009 ret_sz += sp->length;
5010 do_wakeup_routine = 1;
5012 sctp_m_freem(sp->data);
5014 sp->tail_mbuf = NULL;
5018 SCTP_TCB_SEND_UNLOCK(stcb);
5020 if (do_wakeup_routine) {
5021 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
5024 so = SCTP_INP_SO(stcb->sctp_ep);
5026 atomic_add_int(&stcb->asoc.refcnt, 1);
5027 SCTP_TCB_UNLOCK(stcb);
5028 SCTP_SOCKET_LOCK(so, 1);
5029 SCTP_TCB_LOCK(stcb);
5030 atomic_subtract_int(&stcb->asoc.refcnt, 1);
5031 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
5032 /* assoc was freed while we were unlocked */
5033 SCTP_SOCKET_UNLOCK(so, 1);
5038 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
5039 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
5041 SCTP_SOCKET_UNLOCK(so, 1);
5049 * checks to see if the given address, sa, is one that is currently known by
5050 * the kernel note: can't distinguish the same address on multiple interfaces
5051 * and doesn't handle multiple addresses with different zone/scope id's note:
5052 * ifa_ifwithaddr() compares the entire sockaddr struct
5055 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
5058 struct sctp_laddr *laddr;
5060 if (holds_lock == 0) {
5061 SCTP_INP_RLOCK(inp);
5063 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5064 if (laddr->ifa == NULL)
5066 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
5069 if (addr->sa_family == AF_INET) {
5070 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5071 laddr->ifa->address.sin.sin_addr.s_addr) {
5073 if (holds_lock == 0) {
5074 SCTP_INP_RUNLOCK(inp);
5076 return (laddr->ifa);
5082 if (addr->sa_family == AF_INET6) {
5083 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5084 &laddr->ifa->address.sin6)) {
5086 if (holds_lock == 0) {
5087 SCTP_INP_RUNLOCK(inp);
5089 return (laddr->ifa);
5095 if (holds_lock == 0) {
5096 SCTP_INP_RUNLOCK(inp);
5102 sctp_get_ifa_hash_val(struct sockaddr *addr)
5104 switch (addr->sa_family) {
5108 struct sockaddr_in *sin;
5110 sin = (struct sockaddr_in *)addr;
5111 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
5117 struct sockaddr_in6 *sin6;
5118 uint32_t hash_of_addr;
5120 sin6 = (struct sockaddr_in6 *)addr;
5121 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5122 sin6->sin6_addr.s6_addr32[1] +
5123 sin6->sin6_addr.s6_addr32[2] +
5124 sin6->sin6_addr.s6_addr32[3]);
5125 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5126 return (hash_of_addr);
5136 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5138 struct sctp_ifa *sctp_ifap;
5139 struct sctp_vrf *vrf;
5140 struct sctp_ifalist *hash_head;
5141 uint32_t hash_of_addr;
5143 if (holds_lock == 0)
5144 SCTP_IPI_ADDR_RLOCK();
5146 vrf = sctp_find_vrf(vrf_id);
5148 if (holds_lock == 0)
5149 SCTP_IPI_ADDR_RUNLOCK();
5152 hash_of_addr = sctp_get_ifa_hash_val(addr);
5154 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5155 if (hash_head == NULL) {
5156 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5157 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
5158 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
5159 sctp_print_address(addr);
5160 SCTP_PRINTF("No such bucket for address\n");
5161 if (holds_lock == 0)
5162 SCTP_IPI_ADDR_RUNLOCK();
5166 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5167 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5170 if (addr->sa_family == AF_INET) {
5171 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5172 sctp_ifap->address.sin.sin_addr.s_addr) {
5174 if (holds_lock == 0)
5175 SCTP_IPI_ADDR_RUNLOCK();
5182 if (addr->sa_family == AF_INET6) {
5183 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5184 &sctp_ifap->address.sin6)) {
5186 if (holds_lock == 0)
5187 SCTP_IPI_ADDR_RUNLOCK();
5194 if (holds_lock == 0)
5195 SCTP_IPI_ADDR_RUNLOCK();
5200 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
5203 /* User pulled some data, do we need a rwnd update? */
5206 struct socket *so = NULL;
5211 atomic_add_int(&stcb->asoc.refcnt, 1);
5213 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5214 SCTP_STATE_SHUTDOWN_RECEIVED |
5215 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5216 /* Pre-check If we are freeing no update */
5219 SCTP_INP_INCR_REF(stcb->sctp_ep);
5220 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5221 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5224 so = stcb->sctp_socket;
5228 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5229 /* Have you have freed enough to look */
5231 /* Yep, its worth a look and the lock overhead */
5233 /* Figure out what the rwnd would be */
5234 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5235 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5236 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5240 if (dif >= rwnd_req) {
5242 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5245 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5247 * One last check before we allow the guy possibly
5248 * to get in. There is a race, where the guy has not
5249 * reached the gate. In that case
5253 SCTP_TCB_LOCK(stcb);
5254 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5255 /* No reports here */
5256 SCTP_TCB_UNLOCK(stcb);
5259 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5260 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5262 sctp_chunk_output(stcb->sctp_ep, stcb,
5263 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5264 /* make sure no timer is running */
5265 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5266 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5267 SCTP_TCB_UNLOCK(stcb);
5269 /* Update how much we have pending */
5270 stcb->freed_by_sorcv_sincelast = dif;
5273 if (so && r_unlocked && hold_rlock) {
5274 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5276 SCTP_INP_DECR_REF(stcb->sctp_ep);
5278 atomic_add_int(&stcb->asoc.refcnt, -1);
5283 sctp_sorecvmsg(struct socket *so,
5286 struct sockaddr *from,
5289 struct sctp_sndrcvinfo *sinfo,
5293 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5294 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5295 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5296 * On the way out we may send out any combination of:
5297 * MSG_NOTIFICATION MSG_EOR
5300 struct sctp_inpcb *inp = NULL;
5302 int cp_len = 0, error = 0;
5303 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5304 struct mbuf *m = NULL;
5305 struct sctp_tcb *stcb = NULL;
5306 int wakeup_read_socket = 0;
5307 int freecnt_applied = 0;
5308 int out_flags = 0, in_flags = 0;
5309 int block_allowed = 1;
5310 uint32_t freed_so_far = 0;
5311 uint32_t copied_so_far = 0;
5312 int in_eeor_mode = 0;
5313 int no_rcv_needed = 0;
5314 uint32_t rwnd_req = 0;
5315 int hold_sblock = 0;
5318 uint32_t held_length = 0;
5319 int sockbuf_lock = 0;
5322 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5326 in_flags = *msg_flags;
5327 if (in_flags & MSG_PEEK)
5328 SCTP_STAT_INCR(sctps_read_peeks);
5332 slen = uio->uio_resid;
5334 /* Pull in and set up our int flags */
5335 if (in_flags & MSG_OOB) {
5336 /* Out of band's NOT supported */
5337 return (EOPNOTSUPP);
5339 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5340 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5343 if ((in_flags & (MSG_DONTWAIT
5346 SCTP_SO_IS_NBIO(so)) {
5349 /* setup the endpoint */
5350 inp = (struct sctp_inpcb *)so->so_pcb;
5352 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5355 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5356 /* Must be at least a MTU's worth */
5357 if (rwnd_req < SCTP_MIN_RWND)
5358 rwnd_req = SCTP_MIN_RWND;
5359 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5360 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5361 sctp_misc_ints(SCTP_SORECV_ENTER,
5362 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t) uio->uio_resid);
5364 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5365 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5366 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t) uio->uio_resid);
5368 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5370 goto release_unlocked;
5377 if (hold_sblock == 0) {
5378 SOCKBUF_LOCK(&so->so_rcv);
5381 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5382 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5385 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5387 error = so->so_error;
5388 if ((in_flags & MSG_PEEK) == 0)
5392 if (so->so_rcv.sb_cc == 0) {
5399 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
5400 /* we need to wait for data */
5401 if ((so->so_rcv.sb_cc == 0) &&
5402 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5403 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5404 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5406 * For active open side clear flags for
5407 * re-use passive open is blocked by
5410 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5412 * You were aborted, passive side
5415 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5418 so->so_state &= ~(SS_ISCONNECTING |
5419 SS_ISDISCONNECTING |
5423 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5424 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5431 error = sbwait(&so->so_rcv);
5436 goto restart_nosblocks;
5437 } else if (so->so_rcv.sb_cc == 0) {
5439 error = so->so_error;
5440 if ((in_flags & MSG_PEEK) == 0)
5443 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5444 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
5445 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5447 * For active open side clear flags
5448 * for re-use passive open is
5449 * blocked by connect.
5451 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5453 * You were aborted, passive
5454 * side always hits here
5456 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5459 so->so_state &= ~(SS_ISCONNECTING |
5460 SS_ISDISCONNECTING |
5464 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5465 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5472 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5473 error = EWOULDBLOCK;
5477 if (hold_sblock == 1) {
5478 SOCKBUF_UNLOCK(&so->so_rcv);
5481 /* we possibly have data we can read */
5482 /* sa_ignore FREED_MEMORY */
5483 control = TAILQ_FIRST(&inp->read_queue);
5484 if (control == NULL) {
5486 * This could be happening since the appender did the
5487 * increment but as not yet did the tailq insert onto the
5490 if (hold_rlock == 0) {
5491 SCTP_INP_READ_LOCK(inp);
5493 control = TAILQ_FIRST(&inp->read_queue);
5494 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5496 panic("Huh, its non zero and nothing on control?");
5498 so->so_rcv.sb_cc = 0;
5500 SCTP_INP_READ_UNLOCK(inp);
5504 if ((control->length == 0) &&
5505 (control->do_not_ref_stcb)) {
5507 * Clean up code for freeing assoc that left behind a
5508 * pdapi.. maybe a peer in EEOR that just closed after
5509 * sending and never indicated a EOR.
5511 if (hold_rlock == 0) {
5513 SCTP_INP_READ_LOCK(inp);
5515 control->held_length = 0;
5516 if (control->data) {
5517 /* Hmm there is data here .. fix */
5521 m_tmp = control->data;
5523 cnt += SCTP_BUF_LEN(m_tmp);
5524 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5525 control->tail_mbuf = m_tmp;
5526 control->end_added = 1;
5528 m_tmp = SCTP_BUF_NEXT(m_tmp);
5530 control->length = cnt;
5533 TAILQ_REMOVE(&inp->read_queue, control, next);
5534 /* Add back any hiddend data */
5535 sctp_free_remote_addr(control->whoFrom);
5536 sctp_free_a_readq(stcb, control);
5540 SCTP_INP_READ_UNLOCK(inp);
5544 if ((control->length == 0) &&
5545 (control->end_added == 1)) {
5547 * Do we also need to check for (control->pdapi_aborted ==
5550 if (hold_rlock == 0) {
5552 SCTP_INP_READ_LOCK(inp);
5554 TAILQ_REMOVE(&inp->read_queue, control, next);
5555 if (control->data) {
5557 panic("control->data not null but control->length == 0");
5559 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5560 sctp_m_freem(control->data);
5561 control->data = NULL;
5564 if (control->aux_data) {
5565 sctp_m_free(control->aux_data);
5566 control->aux_data = NULL;
5568 if (control->on_strm_q) {
5569 panic("About to free ctl:%p so:%p and its in %d",
5570 control, so, control->on_strm_q);
5572 sctp_free_remote_addr(control->whoFrom);
5573 sctp_free_a_readq(stcb, control);
5576 SCTP_INP_READ_UNLOCK(inp);
5580 if (control->length == 0) {
5581 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5583 /* find a more suitable one then this */
5584 ctl = TAILQ_NEXT(control, next);
5586 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5588 (ctl->spec_flags & M_NOTIFICATION) ||
5589 ((ctl->do_not_ref_stcb == 0) &&
5590 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5593 * If we have a different TCB next, and there is data
5594 * present. If we have already taken some (pdapi), OR we can
5595 * ref the tcb and no delivery as started on this stream, we
5596 * take it. Note we allow a notification on a different
5597 * assoc to be delivered..
5601 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5603 ((ctl->some_taken) ||
5604 ((ctl->do_not_ref_stcb == 0) &&
5605 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5606 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5608 * If we have the same tcb, and there is data present, and we
5609 * have the strm interleave feature present. Then if we have
5610 * taken some (pdapi) or we can refer to tht tcb AND we have
5611 * not started a delivery for this stream, we can take it.
5612 * Note we do NOT allow a notificaiton on the same assoc to
5618 ctl = TAILQ_NEXT(ctl, next);
5622 * if we reach here, not suitable replacement is available
5623 * <or> fragment interleave is NOT on. So stuff the sb_cc
5624 * into the our held count, and its time to sleep again.
5626 held_length = so->so_rcv.sb_cc;
5627 control->held_length = so->so_rcv.sb_cc;
5630 /* Clear the held length since there is something to read */
5631 control->held_length = 0;
5633 SCTP_INP_READ_UNLOCK(inp);
5638 * If we reach here, control has a some data for us to read off.
5639 * Note that stcb COULD be NULL.
5641 control->some_taken++;
5643 SOCKBUF_UNLOCK(&so->so_rcv);
5646 stcb = control->stcb;
5648 if ((control->do_not_ref_stcb == 0) &&
5649 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5650 if (freecnt_applied == 0)
5652 } else if (control->do_not_ref_stcb == 0) {
5653 /* you can't free it on me please */
5655 * The lock on the socket buffer protects us so the
5656 * free code will stop. But since we used the
5657 * socketbuf lock and the sender uses the tcb_lock
5658 * to increment, we need to use the atomic add to
5661 if (freecnt_applied) {
5663 panic("refcnt already incremented");
5665 SCTP_PRINTF("refcnt already incremented?\n");
5668 atomic_add_int(&stcb->asoc.refcnt, 1);
5669 freecnt_applied = 1;
5672 * Setup to remember how much we have not yet told
5673 * the peer our rwnd has opened up. Note we grab the
5674 * value from the tcb from last time. Note too that
5675 * sack sending clears this when a sack is sent,
5676 * which is fine. Once we hit the rwnd_req, we then
5677 * will go to the sctp_user_rcvd() that will not
5678 * lock until it KNOWs it MUST send a WUP-SACK.
5680 freed_so_far = stcb->freed_by_sorcv_sincelast;
5681 stcb->freed_by_sorcv_sincelast = 0;
5685 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5686 control->do_not_ref_stcb == 0) {
5687 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5689 /* First lets get off the sinfo and sockaddr info */
5690 if ((sinfo) && filling_sinfo) {
5691 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo));
5692 nxt = TAILQ_NEXT(control, next);
5693 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5694 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5695 struct sctp_extrcvinfo *s_extra;
5697 s_extra = (struct sctp_extrcvinfo *)sinfo;
5700 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5701 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5702 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5704 if (nxt->spec_flags & M_NOTIFICATION) {
5705 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5707 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5708 s_extra->serinfo_next_length = nxt->length;
5709 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5710 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5711 if (nxt->tail_mbuf != NULL) {
5712 if (nxt->end_added) {
5713 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5718 * we explicitly 0 this, since the memcpy
5719 * got some other things beyond the older
5720 * sinfo_ that is on the control's structure
5724 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5725 s_extra->serinfo_next_aid = 0;
5726 s_extra->serinfo_next_length = 0;
5727 s_extra->serinfo_next_ppid = 0;
5728 s_extra->serinfo_next_stream = 0;
5732 * update off the real current cum-ack, if we have an stcb.
5734 if ((control->do_not_ref_stcb == 0) && stcb)
5735 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5737 * mask off the high bits, we keep the actual chunk bits in
5740 sinfo->sinfo_flags &= 0x00ff;
5741 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5742 sinfo->sinfo_flags |= SCTP_UNORDERED;
5745 #ifdef SCTP_ASOCLOG_OF_TSNS
5747 int index, newindex;
5748 struct sctp_pcbtsn_rlog *entry;
5751 index = inp->readlog_index;
5752 newindex = index + 1;
5753 if (newindex >= SCTP_READ_LOG_SIZE) {
5756 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5757 entry = &inp->readlog[index];
5758 entry->vtag = control->sinfo_assoc_id;
5759 entry->strm = control->sinfo_stream;
5760 entry->seq = control->sinfo_ssn;
5761 entry->sz = control->length;
5762 entry->flgs = control->sinfo_flags;
5765 if ((fromlen > 0) && (from != NULL)) {
5766 union sctp_sockstore store;
5769 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5772 len = sizeof(struct sockaddr_in6);
5773 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5774 store.sin6.sin6_port = control->port_from;
5780 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5781 len = sizeof(struct sockaddr_in6);
5782 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5784 store.sin6.sin6_port = control->port_from;
5786 len = sizeof(struct sockaddr_in);
5787 store.sin = control->whoFrom->ro._l_addr.sin;
5788 store.sin.sin_port = control->port_from;
5791 len = sizeof(struct sockaddr_in);
5792 store.sin = control->whoFrom->ro._l_addr.sin;
5793 store.sin.sin_port = control->port_from;
5801 memcpy(from, &store, min((size_t)fromlen, len));
5804 struct sockaddr_in6 lsa6, *from6;
5806 from6 = (struct sockaddr_in6 *)from;
5807 sctp_recover_scope_mac(from6, (&lsa6));
5811 /* now copy out what data we can */
5813 /* copy out each mbuf in the chain up to length */
5817 /* Move out all we can */
5818 cp_len = (int)uio->uio_resid;
5819 my_len = (int)SCTP_BUF_LEN(m);
5820 if (cp_len > my_len) {
5821 /* not enough in this buf */
5825 SCTP_INP_READ_UNLOCK(inp);
5829 error = uiomove(mtod(m, char *), cp_len, uio);
5831 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5834 if ((control->do_not_ref_stcb == 0) && stcb &&
5835 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5839 /* error we are out of here */
5842 SCTP_INP_READ_LOCK(inp);
5844 if (cp_len == SCTP_BUF_LEN(m)) {
5845 if ((SCTP_BUF_NEXT(m) == NULL) &&
5846 (control->end_added)) {
5847 out_flags |= MSG_EOR;
5848 if ((control->do_not_ref_stcb == 0) &&
5849 (control->stcb != NULL) &&
5850 ((control->spec_flags & M_NOTIFICATION) == 0))
5851 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5853 if (control->spec_flags & M_NOTIFICATION) {
5854 out_flags |= MSG_NOTIFICATION;
5856 /* we ate up the mbuf */
5857 if (in_flags & MSG_PEEK) {
5859 m = SCTP_BUF_NEXT(m);
5860 copied_so_far += cp_len;
5862 /* dispose of the mbuf */
5863 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5864 sctp_sblog(&so->so_rcv,
5865 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5867 sctp_sbfree(control, stcb, &so->so_rcv, m);
5868 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5869 sctp_sblog(&so->so_rcv,
5870 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5872 copied_so_far += cp_len;
5873 freed_so_far += cp_len;
5874 freed_so_far += MSIZE;
5875 atomic_subtract_int(&control->length, cp_len);
5876 control->data = sctp_m_free(m);
5879 * been through it all, must hold sb
5880 * lock ok to null tail
5882 if (control->data == NULL) {
5884 if ((control->end_added == 0) ||
5885 (TAILQ_NEXT(control, next) == NULL)) {
5893 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5894 panic("Hmm we don't own the lock?");
5898 control->tail_mbuf = NULL;
5900 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5901 panic("end_added, nothing left and no MSG_EOR");
5907 /* Do we need to trim the mbuf? */
5908 if (control->spec_flags & M_NOTIFICATION) {
5909 out_flags |= MSG_NOTIFICATION;
5911 if ((in_flags & MSG_PEEK) == 0) {
5912 SCTP_BUF_RESV_UF(m, cp_len);
5913 SCTP_BUF_LEN(m) -= cp_len;
5914 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5915 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5917 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5918 if ((control->do_not_ref_stcb == 0) &&
5920 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5922 copied_so_far += cp_len;
5923 freed_so_far += cp_len;
5924 freed_so_far += MSIZE;
5925 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5926 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5927 SCTP_LOG_SBRESULT, 0);
5929 atomic_subtract_int(&control->length, cp_len);
5931 copied_so_far += cp_len;
5934 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5937 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5938 (control->do_not_ref_stcb == 0) &&
5939 (freed_so_far >= rwnd_req)) {
5940 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5942 } /* end while(m) */
5944 * At this point we have looked at it all and we either have
5945 * a MSG_EOR/or read all the user wants... <OR>
5946 * control->length == 0.
5948 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5949 /* we are done with this control */
5950 if (control->length == 0) {
5951 if (control->data) {
5953 panic("control->data not null at read eor?");
5955 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5956 sctp_m_freem(control->data);
5957 control->data = NULL;
5961 if (hold_rlock == 0) {
5962 SCTP_INP_READ_LOCK(inp);
5965 TAILQ_REMOVE(&inp->read_queue, control, next);
5966 /* Add back any hiddend data */
5967 if (control->held_length) {
5969 control->held_length = 0;
5970 wakeup_read_socket = 1;
5972 if (control->aux_data) {
5973 sctp_m_free(control->aux_data);
5974 control->aux_data = NULL;
5976 no_rcv_needed = control->do_not_ref_stcb;
5977 sctp_free_remote_addr(control->whoFrom);
5978 control->data = NULL;
5979 if (control->on_strm_q) {
5980 panic("About to free ctl:%p so:%p and its in %d",
5981 control, so, control->on_strm_q);
5983 sctp_free_a_readq(stcb, control);
5985 if ((freed_so_far >= rwnd_req) &&
5986 (no_rcv_needed == 0))
5987 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5991 * The user did not read all of this
5992 * message, turn off the returned MSG_EOR
5993 * since we are leaving more behind on the
5997 if (control->end_added &&
5998 (control->data == NULL) &&
5999 (control->tail_mbuf == NULL)) {
6000 panic("Gak, control->length is corrupt?");
6003 no_rcv_needed = control->do_not_ref_stcb;
6004 out_flags &= ~MSG_EOR;
6007 if (out_flags & MSG_EOR) {
6010 if ((uio->uio_resid == 0) ||
6012 (copied_so_far >= (uint32_t) max(so->so_rcv.sb_lowat, 1)))) {
6016 * If I hit here the receiver wants more and this message is
6017 * NOT done (pd-api). So two questions. Can we block? if not
6018 * we are done. Did the user NOT set MSG_WAITALL?
6020 if (block_allowed == 0) {
6024 * We need to wait for more data a few things: - We don't
6025 * sbunlock() so we don't get someone else reading. - We
6026 * must be sure to account for the case where what is added
6027 * is NOT to our control when we wakeup.
6031 * Do we need to tell the transport a rwnd update might be
6032 * needed before we go to sleep?
6034 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
6035 ((freed_so_far >= rwnd_req) &&
6036 (control->do_not_ref_stcb == 0) &&
6037 (no_rcv_needed == 0))) {
6038 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6041 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
6044 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
6047 if (hold_rlock == 1) {
6048 SCTP_INP_READ_UNLOCK(inp);
6051 if (hold_sblock == 0) {
6052 SOCKBUF_LOCK(&so->so_rcv);
6055 if ((copied_so_far) && (control->length == 0) &&
6056 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
6059 if (so->so_rcv.sb_cc <= control->held_length) {
6060 error = sbwait(&so->so_rcv);
6064 control->held_length = 0;
6067 SOCKBUF_UNLOCK(&so->so_rcv);
6070 if (control->length == 0) {
6071 /* still nothing here */
6072 if (control->end_added == 1) {
6073 /* he aborted, or is done i.e.did a shutdown */
6074 out_flags |= MSG_EOR;
6075 if (control->pdapi_aborted) {
6076 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6077 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6079 out_flags |= MSG_TRUNC;
6081 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6082 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6084 goto done_with_control;
6086 if (so->so_rcv.sb_cc > held_length) {
6087 control->held_length = so->so_rcv.sb_cc;
6090 goto wait_some_more;
6091 } else if (control->data == NULL) {
6093 * we must re-sync since data is probably being
6096 SCTP_INP_READ_LOCK(inp);
6097 if ((control->length > 0) && (control->data == NULL)) {
6099 * big trouble.. we have the lock and its
6103 panic("Impossible data==NULL length !=0");
6105 out_flags |= MSG_EOR;
6106 out_flags |= MSG_TRUNC;
6107 control->length = 0;
6108 SCTP_INP_READ_UNLOCK(inp);
6109 goto done_with_control;
6111 SCTP_INP_READ_UNLOCK(inp);
6112 /* We will fall around to get more data */
6117 * Give caller back the mbuf chain,
6118 * store in uio_resid the length
6120 wakeup_read_socket = 0;
6121 if ((control->end_added == 0) ||
6122 (TAILQ_NEXT(control, next) == NULL)) {
6123 /* Need to get rlock */
6124 if (hold_rlock == 0) {
6125 SCTP_INP_READ_LOCK(inp);
6129 if (control->end_added) {
6130 out_flags |= MSG_EOR;
6131 if ((control->do_not_ref_stcb == 0) &&
6132 (control->stcb != NULL) &&
6133 ((control->spec_flags & M_NOTIFICATION) == 0))
6134 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6136 if (control->spec_flags & M_NOTIFICATION) {
6137 out_flags |= MSG_NOTIFICATION;
6139 uio->uio_resid = control->length;
6140 *mp = control->data;
6143 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6144 sctp_sblog(&so->so_rcv,
6145 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6147 sctp_sbfree(control, stcb, &so->so_rcv, m);
6148 freed_so_far += SCTP_BUF_LEN(m);
6149 freed_so_far += MSIZE;
6150 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6151 sctp_sblog(&so->so_rcv,
6152 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6154 m = SCTP_BUF_NEXT(m);
6156 control->data = control->tail_mbuf = NULL;
6157 control->length = 0;
6158 if (out_flags & MSG_EOR) {
6159 /* Done with this control */
6160 goto done_with_control;
6164 if (hold_rlock == 1) {
6165 SCTP_INP_READ_UNLOCK(inp);
6168 if (hold_sblock == 1) {
6169 SOCKBUF_UNLOCK(&so->so_rcv);
6172 sbunlock(&so->so_rcv);
6177 SOCKBUF_UNLOCK(&so->so_rcv);
6180 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6181 if ((freed_so_far >= rwnd_req) &&
6182 (control && (control->do_not_ref_stcb == 0)) &&
6183 (no_rcv_needed == 0))
6184 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6188 *msg_flags = out_flags;
6190 if (((out_flags & MSG_EOR) == 0) &&
6191 ((in_flags & MSG_PEEK) == 0) &&
6193 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6194 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6195 struct sctp_extrcvinfo *s_extra;
6197 s_extra = (struct sctp_extrcvinfo *)sinfo;
6198 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6200 if (hold_rlock == 1) {
6201 SCTP_INP_READ_UNLOCK(inp);
6204 SOCKBUF_UNLOCK(&so->so_rcv);
6207 sbunlock(&so->so_rcv);
6209 if (freecnt_applied) {
6211 * The lock on the socket buffer protects us so the free
6212 * code will stop. But since we used the socketbuf lock and
6213 * the sender uses the tcb_lock to increment, we need to use
6214 * the atomic add to the refcnt.
6218 panic("stcb for refcnt has gone NULL?");
6224 atomic_add_int(&stcb->asoc.refcnt, -1);
6225 /* Save the value back for next time */
6226 stcb->freed_by_sorcv_sincelast = freed_so_far;
6228 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6230 sctp_misc_ints(SCTP_SORECV_DONE,
6232 (uint32_t) ((uio) ? (slen - uio->uio_resid) : slen),
6236 sctp_misc_ints(SCTP_SORECV_DONE,
6238 (uint32_t) ((uio) ? (slen - uio->uio_resid) : slen),
6244 if (wakeup_read_socket) {
6245 sctp_sorwakeup(inp, so);
6251 #ifdef SCTP_MBUF_LOGGING
6253 sctp_m_free(struct mbuf *m)
6255 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6256 sctp_log_mb(m, SCTP_MBUF_IFREE);
6262 sctp_m_freem(struct mbuf *mb)
6265 mb = sctp_m_free(mb);
6271 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6274 * Given a local address. For all associations that holds the
6275 * address, request a peer-set-primary.
6277 struct sctp_ifa *ifa;
6278 struct sctp_laddr *wi;
6280 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6282 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6283 return (EADDRNOTAVAIL);
6286 * Now that we have the ifa we must awaken the iterator with this
6289 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6291 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6294 /* Now incr the count and int wi structure */
6295 SCTP_INCR_LADDR_COUNT();
6296 bzero(wi, sizeof(*wi));
6297 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6299 wi->action = SCTP_SET_PRIM_ADDR;
6300 atomic_add_int(&ifa->refcount, 1);
6302 /* Now add it to the work queue */
6303 SCTP_WQ_ADDR_LOCK();
6305 * Should this really be a tailq? As it is we will process the
6308 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6309 SCTP_WQ_ADDR_UNLOCK();
6310 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6311 (struct sctp_inpcb *)NULL,
6312 (struct sctp_tcb *)NULL,
6313 (struct sctp_nets *)NULL);
6319 sctp_soreceive(struct socket *so,
6320 struct sockaddr **psa,
6323 struct mbuf **controlp,
6327 uint8_t sockbuf[256];
6328 struct sockaddr *from;
6329 struct sctp_extrcvinfo sinfo;
6330 int filling_sinfo = 1;
6331 struct sctp_inpcb *inp;
6333 inp = (struct sctp_inpcb *)so->so_pcb;
6334 /* pickup the assoc we are reading from */
6336 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6339 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6340 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6341 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6342 (controlp == NULL)) {
6343 /* user does not want the sndrcv ctl */
6347 from = (struct sockaddr *)sockbuf;
6348 fromlen = sizeof(sockbuf);
6355 if (filling_sinfo) {
6356 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6358 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6359 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6360 if (controlp != NULL) {
6361 /* copy back the sinfo in a CMSG format */
6363 *controlp = sctp_build_ctl_nchunk(inp,
6364 (struct sctp_sndrcvinfo *)&sinfo);
6369 /* copy back the address info */
6370 if (from && from->sa_len) {
6371 *psa = sodupsockaddr(from, M_NOWAIT);
6384 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6385 int totaddr, int *error)
6389 struct sctp_inpcb *inp;
6390 struct sockaddr *sa;
6394 struct sockaddr_in *sin;
6398 struct sockaddr_in6 *sin6;
6403 inp = stcb->sctp_ep;
6405 for (i = 0; i < totaddr; i++) {
6406 switch (sa->sa_family) {
6409 incr = sizeof(struct sockaddr_in);
6410 sin = (struct sockaddr_in *)sa;
6411 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6412 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6413 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6414 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6415 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6416 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6420 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6421 /* assoc gone no un-lock */
6422 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6423 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6424 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6433 incr = sizeof(struct sockaddr_in6);
6434 sin6 = (struct sockaddr_in6 *)sa;
6435 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6436 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6437 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6438 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6439 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6443 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6444 /* assoc gone no un-lock */
6445 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6446 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6447 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6457 sa = (struct sockaddr *)((caddr_t)sa + incr);
6464 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6465 unsigned int *totaddr,
6466 unsigned int *num_v4, unsigned int *num_v6, int *error,
6467 unsigned int limit, int *bad_addr)
6469 struct sockaddr *sa;
6470 struct sctp_tcb *stcb = NULL;
6471 unsigned int incr, at, i;
6475 *error = *num_v6 = *num_v4 = 0;
6476 /* account and validate addresses */
6477 for (i = 0; i < *totaddr; i++) {
6478 switch (sa->sa_family) {
6481 if (sa->sa_len != incr) {
6482 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6488 incr = (unsigned int)sizeof(struct sockaddr_in);
6494 struct sockaddr_in6 *sin6;
6496 sin6 = (struct sockaddr_in6 *)sa;
6497 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6498 /* Must be non-mapped for connectx */
6499 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6504 if (sa->sa_len != incr) {
6505 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6511 incr = (unsigned int)sizeof(struct sockaddr_in6);
6520 if (i == *totaddr) {
6523 SCTP_INP_INCR_REF(inp);
6524 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6526 /* Already have or am bring up an association */
6529 SCTP_INP_DECR_REF(inp);
6531 if ((at + incr) > limit) {
6535 sa = (struct sockaddr *)((caddr_t)sa + incr);
6537 return ((struct sctp_tcb *)NULL);
6541 * sctp_bindx(ADD) for one address.
6542 * assumes all arguments are valid/checked by caller.
6545 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6546 struct sockaddr *sa, sctp_assoc_t assoc_id,
6547 uint32_t vrf_id, int *error, void *p)
6549 struct sockaddr *addr_touse;
6551 #if defined(INET) && defined(INET6)
6552 struct sockaddr_in sin;
6556 /* see if we're bound all already! */
6557 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6558 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6564 if (sa->sa_family == AF_INET6) {
6566 struct sockaddr_in6 *sin6;
6569 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6570 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6574 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6575 /* can only bind v6 on PF_INET6 sockets */
6576 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6581 sin6 = (struct sockaddr_in6 *)addr_touse;
6582 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6583 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6584 SCTP_IPV6_V6ONLY(inp)) {
6585 /* can't bind v4-mapped on PF_INET sockets */
6586 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6590 in6_sin6_2_sin(&sin, sin6);
6591 addr_touse = (struct sockaddr *)&sin;
6597 if (sa->sa_family == AF_INET) {
6598 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6599 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6603 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6604 SCTP_IPV6_V6ONLY(inp)) {
6605 /* can't bind v4 on PF_INET sockets */
6606 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6612 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6614 /* Can't get proc for Net/Open BSD */
6615 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6619 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6623 * No locks required here since bind and mgmt_ep_sa all do their own
6624 * locking. If we do something for the FIX: below we may need to
6625 * lock in that case.
6627 if (assoc_id == 0) {
6628 /* add the address */
6629 struct sctp_inpcb *lep;
6630 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6632 /* validate the incoming port */
6633 if ((lsin->sin_port != 0) &&
6634 (lsin->sin_port != inp->sctp_lport)) {
6635 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6639 /* user specified 0 port, set it to existing port */
6640 lsin->sin_port = inp->sctp_lport;
6643 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6646 * We must decrement the refcount since we have the
6647 * ep already and are binding. No remove going on
6650 SCTP_INP_DECR_REF(lep);
6653 /* already bound to it.. ok */
6655 } else if (lep == NULL) {
6656 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6657 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6658 SCTP_ADD_IP_ADDRESS,
6661 *error = EADDRINUSE;
6667 * FIX: decide whether we allow assoc based bindx
6673 * sctp_bindx(DELETE) for one address.
6674 * assumes all arguments are valid/checked by caller.
6677 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6678 struct sockaddr *sa, sctp_assoc_t assoc_id,
6679 uint32_t vrf_id, int *error)
6681 struct sockaddr *addr_touse;
6683 #if defined(INET) && defined(INET6)
6684 struct sockaddr_in sin;
6688 /* see if we're bound all already! */
6689 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6690 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6696 if (sa->sa_family == AF_INET6) {
6698 struct sockaddr_in6 *sin6;
6702 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6703 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6707 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6708 /* can only bind v6 on PF_INET6 sockets */
6709 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6714 sin6 = (struct sockaddr_in6 *)addr_touse;
6715 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6716 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6717 SCTP_IPV6_V6ONLY(inp)) {
6718 /* can't bind mapped-v4 on PF_INET sockets */
6719 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6723 in6_sin6_2_sin(&sin, sin6);
6724 addr_touse = (struct sockaddr *)&sin;
6730 if (sa->sa_family == AF_INET) {
6731 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6732 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6736 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6737 SCTP_IPV6_V6ONLY(inp)) {
6738 /* can't bind v4 on PF_INET sockets */
6739 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6746 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6747 * below is ever changed we may need to lock before calling
6748 * association level binding.
6750 if (assoc_id == 0) {
6751 /* delete the address */
6752 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6753 SCTP_DEL_IP_ADDRESS,
6757 * FIX: decide whether we allow assoc based bindx
6763 * returns the valid local address count for an assoc, taking into account
6767 sctp_local_addr_count(struct sctp_tcb *stcb)
6772 int ipv4_local_scope, ipv4_addr_legal;
6776 int local_scope, site_scope, ipv6_addr_legal;
6779 struct sctp_vrf *vrf;
6780 struct sctp_ifn *sctp_ifn;
6781 struct sctp_ifa *sctp_ifa;
6784 /* Turn on all the appropriate scopes */
6785 loopback_scope = stcb->asoc.scope.loopback_scope;
6787 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6788 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6791 local_scope = stcb->asoc.scope.local_scope;
6792 site_scope = stcb->asoc.scope.site_scope;
6793 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6795 SCTP_IPI_ADDR_RLOCK();
6796 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6798 /* no vrf, no addresses */
6799 SCTP_IPI_ADDR_RUNLOCK();
6802 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6804 * bound all case: go through all ifns on the vrf
6806 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6807 if ((loopback_scope == 0) &&
6808 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6811 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6812 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6814 switch (sctp_ifa->address.sa.sa_family) {
6817 if (ipv4_addr_legal) {
6818 struct sockaddr_in *sin;
6820 sin = &sctp_ifa->address.sin;
6821 if (sin->sin_addr.s_addr == 0) {
6828 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6829 &sin->sin_addr) != 0) {
6832 if ((ipv4_local_scope == 0) &&
6833 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6836 /* count this one */
6845 if (ipv6_addr_legal) {
6846 struct sockaddr_in6 *sin6;
6848 sin6 = &sctp_ifa->address.sin6;
6849 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6852 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6853 &sin6->sin6_addr) != 0) {
6856 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6857 if (local_scope == 0)
6859 if (sin6->sin6_scope_id == 0) {
6860 if (sa6_recoverscope(sin6) != 0)
6878 if ((site_scope == 0) &&
6879 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6882 /* count this one */
6897 struct sctp_laddr *laddr;
6899 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6901 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6904 /* count this one */
6908 SCTP_IPI_ADDR_RUNLOCK();
6912 #if defined(SCTP_LOCAL_TRACE_BUF)
6915 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)
6917 uint32_t saveindex, newindex;
6920 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6921 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6924 newindex = saveindex + 1;
6926 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6927 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6930 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6931 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6932 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6933 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6934 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6935 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6936 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6937 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6942 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
6943 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
6948 struct ip6_hdr *ip6;
6951 struct mbuf *sp, *last;
6952 struct udphdr *uhdr;
6955 if ((m->m_flags & M_PKTHDR) == 0) {
6956 /* Can't handle one that is not a pkt hdr */
6959 /* Pull the src port */
6960 iph = mtod(m, struct ip *);
6961 uhdr = (struct udphdr *)((caddr_t)iph + off);
6962 port = uhdr->uh_sport;
6964 * Split out the mbuf chain. Leave the IP header in m, place the
6967 sp = m_split(m, off, M_NOWAIT);
6969 /* Gak, drop packet, we can't do a split */
6972 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6973 /* Gak, packet can't have an SCTP header in it - too small */
6977 /* Now pull up the UDP header and SCTP header together */
6978 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6980 /* Gak pullup failed */
6983 /* Trim out the UDP header */
6984 m_adj(sp, sizeof(struct udphdr));
6986 /* Now reconstruct the mbuf chain */
6987 for (last = m; last->m_next; last = last->m_next);
6989 m->m_pkthdr.len += sp->m_pkthdr.len;
6991 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
6992 * checksum and it was valid. Since CSUM_DATA_VALID ==
6993 * CSUM_SCTP_VALID this would imply that the HW also verified the
6994 * SCTP checksum. Therefore, clear the bit.
6996 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
6997 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
6999 if_name(m->m_pkthdr.rcvif),
7000 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
7001 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
7002 iph = mtod(m, struct ip *);
7003 switch (iph->ip_v) {
7006 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
7007 sctp_input_with_port(m, off, port);
7011 case IPV6_VERSION >> 4:
7012 ip6 = mtod(m, struct ip6_hdr *);
7013 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
7014 sctp6_input_with_port(&m, &off, port);
7027 sctp_over_udp_stop(void)
7030 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7034 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7035 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7036 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7040 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7041 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7042 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7048 sctp_over_udp_start(void)
7054 struct sockaddr_in sin;
7058 struct sockaddr_in6 sin6;
7062 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7065 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7066 if (ntohs(port) == 0) {
7067 /* Must have a port set */
7071 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7072 /* Already running -- must stop first */
7077 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7078 /* Already running -- must stop first */
7083 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7084 SOCK_DGRAM, IPPROTO_UDP,
7085 curthread->td_ucred, curthread))) {
7086 sctp_over_udp_stop();
7089 /* Call the special UDP hook. */
7090 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7091 sctp_recv_udp_tunneled_packet, NULL))) {
7092 sctp_over_udp_stop();
7095 /* Ok, we have a socket, bind it to the port. */
7096 memset(&sin, 0, sizeof(struct sockaddr_in));
7097 sin.sin_len = sizeof(struct sockaddr_in);
7098 sin.sin_family = AF_INET;
7099 sin.sin_port = htons(port);
7100 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7101 (struct sockaddr *)&sin, curthread))) {
7102 sctp_over_udp_stop();
7107 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7108 SOCK_DGRAM, IPPROTO_UDP,
7109 curthread->td_ucred, curthread))) {
7110 sctp_over_udp_stop();
7113 /* Call the special UDP hook. */
7114 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7115 sctp_recv_udp_tunneled_packet, NULL))) {
7116 sctp_over_udp_stop();
7119 /* Ok, we have a socket, bind it to the port. */
7120 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7121 sin6.sin6_len = sizeof(struct sockaddr_in6);
7122 sin6.sin6_family = AF_INET6;
7123 sin6.sin6_port = htons(port);
7124 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7125 (struct sockaddr *)&sin6, curthread))) {
7126 sctp_over_udp_stop();