2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <netinet/sctp_os.h>
37 #include <netinet/sctp_pcb.h>
38 #include <netinet/sctputil.h>
39 #include <netinet/sctp_var.h>
40 #include <netinet/sctp_sysctl.h>
42 #include <netinet6/sctp6_var.h>
44 #include <netinet/sctp_header.h>
45 #include <netinet/sctp_output.h>
46 #include <netinet/sctp_uio.h>
47 #include <netinet/sctp_timer.h>
48 #include <netinet/sctp_indata.h>/* for sctp_deliver_data() */
49 #include <netinet/sctp_auth.h>
50 #include <netinet/sctp_asconf.h>
51 #include <netinet/sctp_bsd_addr.h>
52 #include <netinet/udp.h>
53 #include <netinet/udp_var.h>
58 #define KTR_SCTP KTR_SUBSYS
61 extern struct sctp_cc_functions sctp_cc_functions[];
62 extern struct sctp_ss_functions sctp_ss_functions[];
65 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr)
67 struct sctp_cwnd_log sctp_clog;
69 sctp_clog.x.sb.stcb = stcb;
70 sctp_clog.x.sb.so_sbcc = sb->sb_cc;
72 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
74 sctp_clog.x.sb.stcb_sbcc = 0;
75 sctp_clog.x.sb.incr = incr;
76 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
79 sctp_clog.x.misc.log1,
80 sctp_clog.x.misc.log2,
81 sctp_clog.x.misc.log3,
82 sctp_clog.x.misc.log4);
86 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
88 struct sctp_cwnd_log sctp_clog;
90 sctp_clog.x.close.inp = (void *)inp;
91 sctp_clog.x.close.sctp_flags = inp->sctp_flags;
93 sctp_clog.x.close.stcb = (void *)stcb;
94 sctp_clog.x.close.state = (uint16_t) stcb->asoc.state;
96 sctp_clog.x.close.stcb = 0;
97 sctp_clog.x.close.state = 0;
99 sctp_clog.x.close.loc = loc;
100 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
101 SCTP_LOG_EVENT_CLOSE,
103 sctp_clog.x.misc.log1,
104 sctp_clog.x.misc.log2,
105 sctp_clog.x.misc.log3,
106 sctp_clog.x.misc.log4);
110 rto_logging(struct sctp_nets *net, int from)
112 struct sctp_cwnd_log sctp_clog;
114 memset(&sctp_clog, 0, sizeof(sctp_clog));
115 sctp_clog.x.rto.net = (void *)net;
116 sctp_clog.x.rto.rtt = net->rtt / 1000;
117 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
120 sctp_clog.x.misc.log1,
121 sctp_clog.x.misc.log2,
122 sctp_clog.x.misc.log3,
123 sctp_clog.x.misc.log4);
127 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
129 struct sctp_cwnd_log sctp_clog;
131 sctp_clog.x.strlog.stcb = stcb;
132 sctp_clog.x.strlog.n_tsn = tsn;
133 sctp_clog.x.strlog.n_sseq = sseq;
134 sctp_clog.x.strlog.e_tsn = 0;
135 sctp_clog.x.strlog.e_sseq = 0;
136 sctp_clog.x.strlog.strm = stream;
137 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
140 sctp_clog.x.misc.log1,
141 sctp_clog.x.misc.log2,
142 sctp_clog.x.misc.log3,
143 sctp_clog.x.misc.log4);
147 sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
149 struct sctp_cwnd_log sctp_clog;
151 sctp_clog.x.nagle.stcb = (void *)stcb;
152 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
153 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
154 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
155 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
156 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
157 SCTP_LOG_EVENT_NAGLE,
159 sctp_clog.x.misc.log1,
160 sctp_clog.x.misc.log2,
161 sctp_clog.x.misc.log3,
162 sctp_clog.x.misc.log4);
166 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
168 struct sctp_cwnd_log sctp_clog;
170 sctp_clog.x.sack.cumack = cumack;
171 sctp_clog.x.sack.oldcumack = old_cumack;
172 sctp_clog.x.sack.tsn = tsn;
173 sctp_clog.x.sack.numGaps = gaps;
174 sctp_clog.x.sack.numDups = dups;
175 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
178 sctp_clog.x.misc.log1,
179 sctp_clog.x.misc.log2,
180 sctp_clog.x.misc.log3,
181 sctp_clog.x.misc.log4);
185 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
187 struct sctp_cwnd_log sctp_clog;
189 memset(&sctp_clog, 0, sizeof(sctp_clog));
190 sctp_clog.x.map.base = map;
191 sctp_clog.x.map.cum = cum;
192 sctp_clog.x.map.high = high;
193 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
196 sctp_clog.x.misc.log1,
197 sctp_clog.x.misc.log2,
198 sctp_clog.x.misc.log3,
199 sctp_clog.x.misc.log4);
203 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from)
205 struct sctp_cwnd_log sctp_clog;
207 memset(&sctp_clog, 0, sizeof(sctp_clog));
208 sctp_clog.x.fr.largest_tsn = biggest_tsn;
209 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
210 sctp_clog.x.fr.tsn = tsn;
211 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
214 sctp_clog.x.misc.log1,
215 sctp_clog.x.misc.log2,
216 sctp_clog.x.misc.log3,
217 sctp_clog.x.misc.log4);
220 #ifdef SCTP_MBUF_LOGGING
222 sctp_log_mb(struct mbuf *m, int from)
224 struct sctp_cwnd_log sctp_clog;
226 sctp_clog.x.mb.mp = m;
227 sctp_clog.x.mb.mbuf_flags = (uint8_t) (SCTP_BUF_GET_FLAGS(m));
228 sctp_clog.x.mb.size = (uint16_t) (SCTP_BUF_LEN(m));
229 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
230 if (SCTP_BUF_IS_EXTENDED(m)) {
231 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
232 sctp_clog.x.mb.refcnt = (uint8_t) (SCTP_BUF_EXTEND_REFCNT(m));
234 sctp_clog.x.mb.ext = 0;
235 sctp_clog.x.mb.refcnt = 0;
237 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
240 sctp_clog.x.misc.log1,
241 sctp_clog.x.misc.log2,
242 sctp_clog.x.misc.log3,
243 sctp_clog.x.misc.log4);
247 sctp_log_mbc(struct mbuf *m, int from)
251 for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
252 sctp_log_mb(mat, from);
259 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from)
261 struct sctp_cwnd_log sctp_clog;
263 if (control == NULL) {
264 SCTP_PRINTF("Gak log of NULL?\n");
267 sctp_clog.x.strlog.stcb = control->stcb;
268 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
269 sctp_clog.x.strlog.n_sseq = control->sinfo_ssn;
270 sctp_clog.x.strlog.strm = control->sinfo_stream;
271 if (poschk != NULL) {
272 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
273 sctp_clog.x.strlog.e_sseq = poschk->sinfo_ssn;
275 sctp_clog.x.strlog.e_tsn = 0;
276 sctp_clog.x.strlog.e_sseq = 0;
278 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
281 sctp_clog.x.misc.log1,
282 sctp_clog.x.misc.log2,
283 sctp_clog.x.misc.log3,
284 sctp_clog.x.misc.log4);
288 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
290 struct sctp_cwnd_log sctp_clog;
292 sctp_clog.x.cwnd.net = net;
293 if (stcb->asoc.send_queue_cnt > 255)
294 sctp_clog.x.cwnd.cnt_in_send = 255;
296 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
297 if (stcb->asoc.stream_queue_cnt > 255)
298 sctp_clog.x.cwnd.cnt_in_str = 255;
300 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
303 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
304 sctp_clog.x.cwnd.inflight = net->flight_size;
305 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
306 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
307 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
309 if (SCTP_CWNDLOG_PRESEND == from) {
310 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
312 sctp_clog.x.cwnd.cwnd_augment = augment;
313 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
316 sctp_clog.x.misc.log1,
317 sctp_clog.x.misc.log2,
318 sctp_clog.x.misc.log3,
319 sctp_clog.x.misc.log4);
323 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
325 struct sctp_cwnd_log sctp_clog;
327 memset(&sctp_clog, 0, sizeof(sctp_clog));
329 sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
332 sctp_clog.x.lock.sock = (void *)NULL;
334 sctp_clog.x.lock.inp = (void *)inp;
336 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
338 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
341 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
342 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
344 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
345 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
347 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
348 if (inp && (inp->sctp_socket)) {
349 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
350 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
351 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
353 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
354 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
355 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
357 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
360 sctp_clog.x.misc.log1,
361 sctp_clog.x.misc.log2,
362 sctp_clog.x.misc.log3,
363 sctp_clog.x.misc.log4);
367 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
369 struct sctp_cwnd_log sctp_clog;
371 memset(&sctp_clog, 0, sizeof(sctp_clog));
372 sctp_clog.x.cwnd.net = net;
373 sctp_clog.x.cwnd.cwnd_new_value = error;
374 sctp_clog.x.cwnd.inflight = net->flight_size;
375 sctp_clog.x.cwnd.cwnd_augment = burst;
376 if (stcb->asoc.send_queue_cnt > 255)
377 sctp_clog.x.cwnd.cnt_in_send = 255;
379 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
380 if (stcb->asoc.stream_queue_cnt > 255)
381 sctp_clog.x.cwnd.cnt_in_str = 255;
383 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
384 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
385 SCTP_LOG_EVENT_MAXBURST,
387 sctp_clog.x.misc.log1,
388 sctp_clog.x.misc.log2,
389 sctp_clog.x.misc.log3,
390 sctp_clog.x.misc.log4);
394 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
396 struct sctp_cwnd_log sctp_clog;
398 sctp_clog.x.rwnd.rwnd = peers_rwnd;
399 sctp_clog.x.rwnd.send_size = snd_size;
400 sctp_clog.x.rwnd.overhead = overhead;
401 sctp_clog.x.rwnd.new_rwnd = 0;
402 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
405 sctp_clog.x.misc.log1,
406 sctp_clog.x.misc.log2,
407 sctp_clog.x.misc.log3,
408 sctp_clog.x.misc.log4);
412 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
414 struct sctp_cwnd_log sctp_clog;
416 sctp_clog.x.rwnd.rwnd = peers_rwnd;
417 sctp_clog.x.rwnd.send_size = flight_size;
418 sctp_clog.x.rwnd.overhead = overhead;
419 sctp_clog.x.rwnd.new_rwnd = a_rwndval;
420 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
423 sctp_clog.x.misc.log1,
424 sctp_clog.x.misc.log2,
425 sctp_clog.x.misc.log3,
426 sctp_clog.x.misc.log4);
429 #ifdef SCTP_MBCNT_LOGGING
431 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
433 struct sctp_cwnd_log sctp_clog;
435 sctp_clog.x.mbcnt.total_queue_size = total_oq;
436 sctp_clog.x.mbcnt.size_change = book;
437 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
438 sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
439 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
440 SCTP_LOG_EVENT_MBCNT,
442 sctp_clog.x.misc.log1,
443 sctp_clog.x.misc.log2,
444 sctp_clog.x.misc.log3,
445 sctp_clog.x.misc.log4);
451 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
453 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
460 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from)
462 struct sctp_cwnd_log sctp_clog;
464 sctp_clog.x.wake.stcb = (void *)stcb;
465 sctp_clog.x.wake.wake_cnt = wake_cnt;
466 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
467 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
468 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
470 if (stcb->asoc.stream_queue_cnt < 0xff)
471 sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt;
473 sctp_clog.x.wake.stream_qcnt = 0xff;
475 if (stcb->asoc.chunks_on_out_queue < 0xff)
476 sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue;
478 sctp_clog.x.wake.chunks_on_oque = 0xff;
480 sctp_clog.x.wake.sctpflags = 0;
481 /* set in the defered mode stuff */
482 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
483 sctp_clog.x.wake.sctpflags |= 1;
484 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
485 sctp_clog.x.wake.sctpflags |= 2;
486 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
487 sctp_clog.x.wake.sctpflags |= 4;
488 /* what about the sb */
489 if (stcb->sctp_socket) {
490 struct socket *so = stcb->sctp_socket;
492 sctp_clog.x.wake.sbflags = (uint8_t) ((so->so_snd.sb_flags & 0x00ff));
494 sctp_clog.x.wake.sbflags = 0xff;
496 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
499 sctp_clog.x.misc.log1,
500 sctp_clog.x.misc.log2,
501 sctp_clog.x.misc.log3,
502 sctp_clog.x.misc.log4);
506 sctp_log_block(uint8_t from, struct sctp_association *asoc, int sendlen)
508 struct sctp_cwnd_log sctp_clog;
510 sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
511 sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt);
512 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
513 sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt;
514 sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue;
515 sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight / 1024);
516 sctp_clog.x.blk.sndlen = sendlen;
517 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
518 SCTP_LOG_EVENT_BLOCK,
520 sctp_clog.x.misc.log1,
521 sctp_clog.x.misc.log2,
522 sctp_clog.x.misc.log3,
523 sctp_clog.x.misc.log4);
527 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
529 /* May need to fix this if ktrdump does not work */
533 #ifdef SCTP_AUDITING_ENABLED
534 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
535 static int sctp_audit_indx = 0;
539 sctp_print_audit_report(void)
545 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
546 if ((sctp_audit_data[i][0] == 0xe0) &&
547 (sctp_audit_data[i][1] == 0x01)) {
550 } else if (sctp_audit_data[i][0] == 0xf0) {
553 } else if ((sctp_audit_data[i][0] == 0xc0) &&
554 (sctp_audit_data[i][1] == 0x01)) {
558 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
559 (uint32_t) sctp_audit_data[i][1]);
564 for (i = 0; i < sctp_audit_indx; i++) {
565 if ((sctp_audit_data[i][0] == 0xe0) &&
566 (sctp_audit_data[i][1] == 0x01)) {
569 } else if (sctp_audit_data[i][0] == 0xf0) {
572 } else if ((sctp_audit_data[i][0] == 0xc0) &&
573 (sctp_audit_data[i][1] == 0x01)) {
577 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
578 (uint32_t) sctp_audit_data[i][1]);
587 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
588 struct sctp_nets *net)
590 int resend_cnt, tot_out, rep, tot_book_cnt;
591 struct sctp_nets *lnet;
592 struct sctp_tmit_chunk *chk;
594 sctp_audit_data[sctp_audit_indx][0] = 0xAA;
595 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
597 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
601 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
602 sctp_audit_data[sctp_audit_indx][1] = 0x01;
604 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
610 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
611 sctp_audit_data[sctp_audit_indx][1] = 0x02;
613 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
618 sctp_audit_data[sctp_audit_indx][0] = 0xA1;
619 sctp_audit_data[sctp_audit_indx][1] =
620 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
622 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
627 resend_cnt = tot_out = 0;
628 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
629 if (chk->sent == SCTP_DATAGRAM_RESEND) {
631 } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
632 tot_out += chk->book_size;
636 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
637 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
638 sctp_audit_data[sctp_audit_indx][1] = 0xA1;
640 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
643 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
644 resend_cnt, stcb->asoc.sent_queue_retran_cnt);
646 stcb->asoc.sent_queue_retran_cnt = resend_cnt;
647 sctp_audit_data[sctp_audit_indx][0] = 0xA2;
648 sctp_audit_data[sctp_audit_indx][1] =
649 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
651 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
655 if (tot_out != stcb->asoc.total_flight) {
656 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
657 sctp_audit_data[sctp_audit_indx][1] = 0xA2;
659 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
663 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
664 (int)stcb->asoc.total_flight);
665 stcb->asoc.total_flight = tot_out;
667 if (tot_book_cnt != stcb->asoc.total_flight_count) {
668 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
669 sctp_audit_data[sctp_audit_indx][1] = 0xA5;
671 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
675 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
677 stcb->asoc.total_flight_count = tot_book_cnt;
680 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
681 tot_out += lnet->flight_size;
683 if (tot_out != stcb->asoc.total_flight) {
684 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
685 sctp_audit_data[sctp_audit_indx][1] = 0xA3;
687 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
691 SCTP_PRINTF("real flight:%d net total was %d\n",
692 stcb->asoc.total_flight, tot_out);
693 /* now corrective action */
694 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
697 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
698 if ((chk->whoTo == lnet) &&
699 (chk->sent < SCTP_DATAGRAM_RESEND)) {
700 tot_out += chk->book_size;
703 if (lnet->flight_size != tot_out) {
704 SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
705 (void *)lnet, lnet->flight_size,
707 lnet->flight_size = tot_out;
712 sctp_print_audit_report();
717 sctp_audit_log(uint8_t ev, uint8_t fd)
720 sctp_audit_data[sctp_audit_indx][0] = ev;
721 sctp_audit_data[sctp_audit_indx][1] = fd;
723 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
731 * sctp_stop_timers_for_shutdown() should be called
732 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
733 * state to make sure that all timers are stopped.
736 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
738 struct sctp_association *asoc;
739 struct sctp_nets *net;
743 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
744 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
745 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
746 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
747 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
748 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
749 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
750 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
755 * a list of sizes based on typical mtu's, used only if next hop size not
758 static uint32_t sctp_mtu_sizes[] = {
780 * Return the largest MTU smaller than val. If there is no
781 * entry, just return val.
784 sctp_get_prev_mtu(uint32_t val)
788 if (val <= sctp_mtu_sizes[0]) {
791 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
792 if (val <= sctp_mtu_sizes[i]) {
796 return (sctp_mtu_sizes[i - 1]);
800 * Return the smallest MTU larger than val. If there is no
801 * entry, just return val.
804 sctp_get_next_mtu(uint32_t val)
806 /* select another MTU that is just bigger than this one */
809 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
810 if (val < sctp_mtu_sizes[i]) {
811 return (sctp_mtu_sizes[i]);
818 sctp_fill_random_store(struct sctp_pcb *m)
821 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
822 * our counter. The result becomes our good random numbers and we
823 * then setup to give these out. Note that we do no locking to
824 * protect this. This is ok, since if competing folks call this we
825 * will get more gobbled gook in the random store which is what we
826 * want. There is a danger that two guys will use the same random
827 * numbers, but thats ok too since that is random as well :->
830 (void)sctp_hmac(SCTP_HMAC, (uint8_t *) m->random_numbers,
831 sizeof(m->random_numbers), (uint8_t *) & m->random_counter,
832 sizeof(m->random_counter), (uint8_t *) m->random_store);
837 sctp_select_initial_TSN(struct sctp_pcb *inp)
840 * A true implementation should use random selection process to get
841 * the initial stream sequence number, using RFC1750 as a good
846 int store_at, new_store;
848 if (inp->initial_sequence_debug != 0) {
851 ret = inp->initial_sequence_debug;
852 inp->initial_sequence_debug++;
856 store_at = inp->store_at;
857 new_store = store_at + sizeof(uint32_t);
858 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
861 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
864 if (new_store == 0) {
865 /* Refill the random store */
866 sctp_fill_random_store(inp);
868 p = &inp->random_store[store_at];
875 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
881 (void)SCTP_GETTIME_TIMEVAL(&now);
884 x = sctp_select_initial_TSN(&inp->sctp_ep);
889 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
897 sctp_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->auth_supported = inp->auth_supported;
974 asoc->asconf_supported = inp->asconf_supported;
975 asoc->reconfig_supported = inp->reconfig_supported;
976 asoc->nrsack_supported = inp->nrsack_supported;
977 asoc->pktdrop_supported = inp->pktdrop_supported;
978 asoc->sctp_cmt_pf = (uint8_t) 0;
979 asoc->sctp_frag_point = inp->sctp_frag_point;
980 asoc->sctp_features = inp->sctp_features;
981 asoc->default_dscp = inp->sctp_ep.default_dscp;
982 asoc->max_cwnd = inp->max_cwnd;
984 if (inp->sctp_ep.default_flowlabel) {
985 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
987 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
988 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
989 asoc->default_flowlabel &= 0x000fffff;
990 asoc->default_flowlabel |= 0x80000000;
992 asoc->default_flowlabel = 0;
996 asoc->sb_send_resv = 0;
998 asoc->my_vtag = override_tag;
1000 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
1002 /* Get the nonce tags */
1003 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1004 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1005 asoc->vrf_id = vrf_id;
1007 #ifdef SCTP_ASOCLOG_OF_TSNS
1008 asoc->tsn_in_at = 0;
1009 asoc->tsn_out_at = 0;
1010 asoc->tsn_in_wrapped = 0;
1011 asoc->tsn_out_wrapped = 0;
1012 asoc->cumack_log_at = 0;
1013 asoc->cumack_log_atsnt = 0;
1015 #ifdef SCTP_FS_SPEC_LOG
1019 asoc->assoc_up_sent = 0;
1020 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
1021 sctp_select_initial_TSN(&inp->sctp_ep);
1022 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
1023 /* we are optimisitic here */
1024 asoc->peer_supports_nat = 0;
1025 asoc->sent_queue_retran_cnt = 0;
1028 asoc->last_net_cmt_send_started = NULL;
1030 /* This will need to be adjusted */
1031 asoc->last_acked_seq = asoc->init_seq_number - 1;
1032 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
1033 asoc->asconf_seq_in = asoc->last_acked_seq;
1035 /* here we are different, we hold the next one we expect */
1036 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
1038 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
1039 asoc->initial_rto = inp->sctp_ep.initial_rto;
1041 asoc->max_init_times = inp->sctp_ep.max_init_times;
1042 asoc->max_send_times = inp->sctp_ep.max_send_times;
1043 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
1044 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
1045 asoc->free_chunk_cnt = 0;
1047 asoc->iam_blocking = 0;
1048 asoc->context = inp->sctp_context;
1049 asoc->local_strreset_support = inp->local_strreset_support;
1050 asoc->def_send = inp->def_send;
1051 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1052 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
1053 asoc->pr_sctp_cnt = 0;
1054 asoc->total_output_queue_size = 0;
1056 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1057 asoc->scope.ipv6_addr_legal = 1;
1058 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1059 asoc->scope.ipv4_addr_legal = 1;
1061 asoc->scope.ipv4_addr_legal = 0;
1064 asoc->scope.ipv6_addr_legal = 0;
1065 asoc->scope.ipv4_addr_legal = 1;
1068 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1069 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1071 asoc->smallest_mtu = inp->sctp_frag_point;
1072 asoc->minrto = inp->sctp_ep.sctp_minrto;
1073 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1075 asoc->locked_on_sending = NULL;
1076 asoc->stream_locked_on = 0;
1077 asoc->ecn_echo_cnt_onq = 0;
1078 asoc->stream_locked = 0;
1080 asoc->send_sack = 1;
1082 LIST_INIT(&asoc->sctp_restricted_addrs);
1084 TAILQ_INIT(&asoc->nets);
1085 TAILQ_INIT(&asoc->pending_reply_queue);
1086 TAILQ_INIT(&asoc->asconf_ack_sent);
1087 /* Setup to fill the hb random cache at first HB */
1088 asoc->hb_random_idx = 4;
1090 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1092 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1093 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1095 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1096 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1099 * Now the stream parameters, here we allocate space for all streams
1100 * that we request by default.
1102 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1104 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1105 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1107 if (asoc->strmout == NULL) {
1108 /* big trouble no memory */
1109 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1112 for (i = 0; i < asoc->streamoutcnt; i++) {
1114 * inbound side must be set to 0xffff, also NOTE when we get
1115 * the INIT-ACK back (for INIT sender) we MUST reduce the
1116 * count (streamoutcnt) but first check if we sent to any of
1117 * the upper streams that were dropped (if some were). Those
1118 * that were dropped must be notified to the upper layer as
1121 asoc->strmout[i].next_sequence_send = 0x0;
1122 TAILQ_INIT(&asoc->strmout[i].outqueue);
1123 asoc->strmout[i].chunks_on_queues = 0;
1124 #if defined(SCTP_DETAILED_STR_STATS)
1125 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1126 asoc->strmout[i].abandoned_sent[j] = 0;
1127 asoc->strmout[i].abandoned_unsent[j] = 0;
1130 asoc->strmout[i].abandoned_sent[0] = 0;
1131 asoc->strmout[i].abandoned_unsent[0] = 0;
1133 asoc->strmout[i].stream_no = i;
1134 asoc->strmout[i].last_msg_incomplete = 0;
1135 asoc->strmout[i].state = SCTP_STREAM_OPENING;
1136 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL);
1138 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1140 /* Now the mapping array */
1141 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1142 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1144 if (asoc->mapping_array == NULL) {
1145 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1146 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1149 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1150 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1152 if (asoc->nr_mapping_array == NULL) {
1153 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1154 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1155 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1158 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1160 /* Now the init of the other outqueues */
1161 TAILQ_INIT(&asoc->free_chunks);
1162 TAILQ_INIT(&asoc->control_send_queue);
1163 TAILQ_INIT(&asoc->asconf_send_queue);
1164 TAILQ_INIT(&asoc->send_queue);
1165 TAILQ_INIT(&asoc->sent_queue);
1166 TAILQ_INIT(&asoc->reasmqueue);
1167 TAILQ_INIT(&asoc->resetHead);
1168 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1169 TAILQ_INIT(&asoc->asconf_queue);
1170 /* authentication fields */
1171 asoc->authinfo.random = NULL;
1172 asoc->authinfo.active_keyid = 0;
1173 asoc->authinfo.assoc_key = NULL;
1174 asoc->authinfo.assoc_keyid = 0;
1175 asoc->authinfo.recv_key = NULL;
1176 asoc->authinfo.recv_keyid = 0;
1177 LIST_INIT(&asoc->shared_keys);
1178 asoc->marked_retrans = 0;
1179 asoc->port = inp->sctp_ep.port;
1183 asoc->timoshutdown = 0;
1184 asoc->timoheartbeat = 0;
1185 asoc->timocookie = 0;
1186 asoc->timoshutdownack = 0;
1187 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1188 asoc->discontinuity_time = asoc->start_time;
1189 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1190 asoc->abandoned_unsent[i] = 0;
1191 asoc->abandoned_sent[i] = 0;
1194 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1195 * freed later when the association is freed.
1201 sctp_print_mapping_array(struct sctp_association *asoc)
1203 unsigned int i, limit;
1205 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1206 asoc->mapping_array_size,
1207 asoc->mapping_array_base_tsn,
1208 asoc->cumulative_tsn,
1209 asoc->highest_tsn_inside_map,
1210 asoc->highest_tsn_inside_nr_map);
1211 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1212 if (asoc->mapping_array[limit - 1] != 0) {
1216 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1217 for (i = 0; i < limit; i++) {
1218 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1222 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1223 if (asoc->nr_mapping_array[limit - 1]) {
1227 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1228 for (i = 0; i < limit; i++) {
1229 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1236 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1238 /* mapping array needs to grow */
1239 uint8_t *new_array1, *new_array2;
1242 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1243 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1244 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1245 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1246 /* can't get more, forget it */
1247 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1249 SCTP_FREE(new_array1, SCTP_M_MAP);
1252 SCTP_FREE(new_array2, SCTP_M_MAP);
1256 memset(new_array1, 0, new_size);
1257 memset(new_array2, 0, new_size);
1258 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1259 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1260 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1261 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1262 asoc->mapping_array = new_array1;
1263 asoc->nr_mapping_array = new_array2;
1264 asoc->mapping_array_size = new_size;
1270 sctp_iterator_work(struct sctp_iterator *it)
1272 int iteration_count = 0;
1275 struct sctp_inpcb *tinp;
1277 SCTP_INP_INFO_RLOCK();
1278 SCTP_ITERATOR_LOCK();
1280 SCTP_INP_RLOCK(it->inp);
1281 SCTP_INP_DECR_REF(it->inp);
1283 if (it->inp == NULL) {
1284 /* iterator is complete */
1286 SCTP_ITERATOR_UNLOCK();
1287 SCTP_INP_INFO_RUNLOCK();
1288 if (it->function_atend != NULL) {
1289 (*it->function_atend) (it->pointer, it->val);
1291 SCTP_FREE(it, SCTP_M_ITER);
1298 SCTP_INP_RLOCK(it->inp);
1300 while (((it->pcb_flags) &&
1301 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1302 ((it->pcb_features) &&
1303 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1304 /* endpoint flags or features don't match, so keep looking */
1305 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1306 SCTP_INP_RUNLOCK(it->inp);
1307 goto done_with_iterator;
1310 it->inp = LIST_NEXT(it->inp, sctp_list);
1311 SCTP_INP_RUNLOCK(tinp);
1312 if (it->inp == NULL) {
1313 goto done_with_iterator;
1315 SCTP_INP_RLOCK(it->inp);
1317 /* now go through each assoc which is in the desired state */
1318 if (it->done_current_ep == 0) {
1319 if (it->function_inp != NULL)
1320 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1321 it->done_current_ep = 1;
1323 if (it->stcb == NULL) {
1324 /* run the per instance function */
1325 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1327 if ((inp_skip) || it->stcb == NULL) {
1328 if (it->function_inp_end != NULL) {
1329 inp_skip = (*it->function_inp_end) (it->inp,
1333 SCTP_INP_RUNLOCK(it->inp);
1337 SCTP_TCB_LOCK(it->stcb);
1338 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1339 /* not in the right state... keep looking */
1340 SCTP_TCB_UNLOCK(it->stcb);
1343 /* see if we have limited out the iterator loop */
1345 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1346 /* Pause to let others grab the lock */
1347 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1348 SCTP_TCB_UNLOCK(it->stcb);
1349 SCTP_INP_INCR_REF(it->inp);
1350 SCTP_INP_RUNLOCK(it->inp);
1351 SCTP_ITERATOR_UNLOCK();
1352 SCTP_INP_INFO_RUNLOCK();
1353 SCTP_INP_INFO_RLOCK();
1354 SCTP_ITERATOR_LOCK();
1355 if (sctp_it_ctl.iterator_flags) {
1356 /* We won't be staying here */
1357 SCTP_INP_DECR_REF(it->inp);
1358 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1359 if (sctp_it_ctl.iterator_flags &
1360 SCTP_ITERATOR_STOP_CUR_IT) {
1361 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1362 goto done_with_iterator;
1364 if (sctp_it_ctl.iterator_flags &
1365 SCTP_ITERATOR_STOP_CUR_INP) {
1366 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1369 /* If we reach here huh? */
1370 SCTP_PRINTF("Unknown it ctl flag %x\n",
1371 sctp_it_ctl.iterator_flags);
1372 sctp_it_ctl.iterator_flags = 0;
1374 SCTP_INP_RLOCK(it->inp);
1375 SCTP_INP_DECR_REF(it->inp);
1376 SCTP_TCB_LOCK(it->stcb);
1377 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1378 iteration_count = 0;
1380 /* run function on this one */
1381 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1384 * we lie here, it really needs to have its own type but
1385 * first I must verify that this won't effect things :-0
1387 if (it->no_chunk_output == 0)
1388 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1390 SCTP_TCB_UNLOCK(it->stcb);
1392 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1393 if (it->stcb == NULL) {
1394 /* Run last function */
1395 if (it->function_inp_end != NULL) {
1396 inp_skip = (*it->function_inp_end) (it->inp,
1402 SCTP_INP_RUNLOCK(it->inp);
1404 /* done with all assocs on this endpoint, move on to next endpoint */
1405 it->done_current_ep = 0;
1406 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1409 it->inp = LIST_NEXT(it->inp, sctp_list);
1411 if (it->inp == NULL) {
1412 goto done_with_iterator;
1414 goto select_a_new_ep;
1418 sctp_iterator_worker(void)
1420 struct sctp_iterator *it, *nit;
1422 /* This function is called with the WQ lock in place */
1424 sctp_it_ctl.iterator_running = 1;
1425 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1426 sctp_it_ctl.cur_it = it;
1427 /* now lets work on this one */
1428 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1429 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1430 CURVNET_SET(it->vn);
1431 sctp_iterator_work(it);
1432 sctp_it_ctl.cur_it = NULL;
1434 SCTP_IPI_ITERATOR_WQ_LOCK();
1435 /* sa_ignore FREED_MEMORY */
1437 sctp_it_ctl.iterator_running = 0;
1443 sctp_handle_addr_wq(void)
1445 /* deal with the ADDR wq from the rtsock calls */
1446 struct sctp_laddr *wi, *nwi;
1447 struct sctp_asconf_iterator *asc;
1449 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1450 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1452 /* Try later, no memory */
1453 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1454 (struct sctp_inpcb *)NULL,
1455 (struct sctp_tcb *)NULL,
1456 (struct sctp_nets *)NULL);
1459 LIST_INIT(&asc->list_of_work);
1462 SCTP_WQ_ADDR_LOCK();
1463 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1464 LIST_REMOVE(wi, sctp_nxt_addr);
1465 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1468 SCTP_WQ_ADDR_UNLOCK();
1470 if (asc->cnt == 0) {
1471 SCTP_FREE(asc, SCTP_M_ASC_IT);
1475 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
1476 sctp_asconf_iterator_stcb,
1477 NULL, /* No ep end for boundall */
1478 SCTP_PCB_FLAGS_BOUNDALL,
1479 SCTP_PCB_ANY_FEATURES,
1480 SCTP_ASOC_ANY_STATE,
1482 sctp_asconf_iterator_end, NULL, 0);
1484 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
1486 * Freeing if we are stopping or put back on the
1489 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
1490 sctp_asconf_iterator_end(asc, 0);
1492 SCTP_WQ_ADDR_LOCK();
1493 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
1494 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
1496 SCTP_WQ_ADDR_UNLOCK();
1497 SCTP_FREE(asc, SCTP_M_ASC_IT);
1504 sctp_timeout_handler(void *t)
1506 struct sctp_inpcb *inp;
1507 struct sctp_tcb *stcb;
1508 struct sctp_nets *net;
1509 struct sctp_timer *tmr;
1510 struct mbuf *op_err;
1512 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1519 tmr = (struct sctp_timer *)t;
1520 inp = (struct sctp_inpcb *)tmr->ep;
1521 stcb = (struct sctp_tcb *)tmr->tcb;
1522 net = (struct sctp_nets *)tmr->net;
1523 CURVNET_SET((struct vnet *)tmr->vnet);
1526 #ifdef SCTP_AUDITING_ENABLED
1527 sctp_audit_log(0xF0, (uint8_t) tmr->type);
1528 sctp_auditing(3, inp, stcb, net);
1531 /* sanity checks... */
1532 if (tmr->self != (void *)tmr) {
1534 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1540 tmr->stopped_from = 0xa001;
1541 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1543 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1549 tmr->stopped_from = 0xa002;
1550 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1554 /* if this is an iterator timeout, get the struct and clear inp */
1555 tmr->stopped_from = 0xa003;
1557 SCTP_INP_INCR_REF(inp);
1558 if ((inp->sctp_socket == NULL) &&
1559 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1560 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1561 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1562 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1563 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1564 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1565 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1566 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1567 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1569 SCTP_INP_DECR_REF(inp);
1574 tmr->stopped_from = 0xa004;
1576 atomic_add_int(&stcb->asoc.refcnt, 1);
1577 if (stcb->asoc.state == 0) {
1578 atomic_add_int(&stcb->asoc.refcnt, -1);
1580 SCTP_INP_DECR_REF(inp);
1587 tmr->stopped_from = 0xa005;
1588 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type);
1589 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1591 SCTP_INP_DECR_REF(inp);
1594 atomic_add_int(&stcb->asoc.refcnt, -1);
1599 tmr->stopped_from = 0xa006;
1602 SCTP_TCB_LOCK(stcb);
1603 atomic_add_int(&stcb->asoc.refcnt, -1);
1604 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1605 ((stcb->asoc.state == 0) ||
1606 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1607 SCTP_TCB_UNLOCK(stcb);
1609 SCTP_INP_DECR_REF(inp);
1615 /* record in stopped what t-o occured */
1616 tmr->stopped_from = type;
1618 /* mark as being serviced now */
1619 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1621 * Callout has been rescheduled.
1625 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1627 * Not active, so no action.
1631 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1633 /* call the handler for the appropriate timer type */
1635 case SCTP_TIMER_TYPE_ZERO_COPY:
1639 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1640 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1643 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1647 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1648 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1651 case SCTP_TIMER_TYPE_ADDR_WQ:
1652 sctp_handle_addr_wq();
1654 case SCTP_TIMER_TYPE_SEND:
1655 if ((stcb == NULL) || (inp == NULL)) {
1658 SCTP_STAT_INCR(sctps_timodata);
1659 stcb->asoc.timodata++;
1660 stcb->asoc.num_send_timers_up--;
1661 if (stcb->asoc.num_send_timers_up < 0) {
1662 stcb->asoc.num_send_timers_up = 0;
1664 SCTP_TCB_LOCK_ASSERT(stcb);
1665 if (sctp_t3rxt_timer(inp, stcb, net)) {
1666 /* no need to unlock on tcb its gone */
1670 SCTP_TCB_LOCK_ASSERT(stcb);
1671 #ifdef SCTP_AUDITING_ENABLED
1672 sctp_auditing(4, inp, stcb, net);
1674 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1675 if ((stcb->asoc.num_send_timers_up == 0) &&
1676 (stcb->asoc.sent_queue_cnt > 0)) {
1677 struct sctp_tmit_chunk *chk;
1680 * safeguard. If there on some on the sent queue
1681 * somewhere but no timers running something is
1682 * wrong... so we start a timer on the first chunk
1683 * on the send queue on whatever net it is sent to.
1685 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1686 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1690 case SCTP_TIMER_TYPE_INIT:
1691 if ((stcb == NULL) || (inp == NULL)) {
1694 SCTP_STAT_INCR(sctps_timoinit);
1695 stcb->asoc.timoinit++;
1696 if (sctp_t1init_timer(inp, stcb, net)) {
1697 /* no need to unlock on tcb its gone */
1700 /* We do output but not here */
1703 case SCTP_TIMER_TYPE_RECV:
1704 if ((stcb == NULL) || (inp == NULL)) {
1707 SCTP_STAT_INCR(sctps_timosack);
1708 stcb->asoc.timosack++;
1709 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1710 #ifdef SCTP_AUDITING_ENABLED
1711 sctp_auditing(4, inp, stcb, net);
1713 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1715 case SCTP_TIMER_TYPE_SHUTDOWN:
1716 if ((stcb == NULL) || (inp == NULL)) {
1719 if (sctp_shutdown_timer(inp, stcb, net)) {
1720 /* no need to unlock on tcb its gone */
1723 SCTP_STAT_INCR(sctps_timoshutdown);
1724 stcb->asoc.timoshutdown++;
1725 #ifdef SCTP_AUDITING_ENABLED
1726 sctp_auditing(4, inp, stcb, net);
1728 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1730 case SCTP_TIMER_TYPE_HEARTBEAT:
1731 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1734 SCTP_STAT_INCR(sctps_timoheartbeat);
1735 stcb->asoc.timoheartbeat++;
1736 if (sctp_heartbeat_timer(inp, stcb, net)) {
1737 /* no need to unlock on tcb its gone */
1740 #ifdef SCTP_AUDITING_ENABLED
1741 sctp_auditing(4, inp, stcb, net);
1743 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1744 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1745 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1748 case SCTP_TIMER_TYPE_COOKIE:
1749 if ((stcb == NULL) || (inp == NULL)) {
1752 if (sctp_cookie_timer(inp, stcb, net)) {
1753 /* no need to unlock on tcb its gone */
1756 SCTP_STAT_INCR(sctps_timocookie);
1757 stcb->asoc.timocookie++;
1758 #ifdef SCTP_AUDITING_ENABLED
1759 sctp_auditing(4, inp, stcb, net);
1762 * We consider T3 and Cookie timer pretty much the same with
1763 * respect to where from in chunk_output.
1765 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1767 case SCTP_TIMER_TYPE_NEWCOOKIE:
1775 SCTP_STAT_INCR(sctps_timosecret);
1776 (void)SCTP_GETTIME_TIMEVAL(&tv);
1777 SCTP_INP_WLOCK(inp);
1778 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1779 inp->sctp_ep.last_secret_number =
1780 inp->sctp_ep.current_secret_number;
1781 inp->sctp_ep.current_secret_number++;
1782 if (inp->sctp_ep.current_secret_number >=
1783 SCTP_HOW_MANY_SECRETS) {
1784 inp->sctp_ep.current_secret_number = 0;
1786 secret = (int)inp->sctp_ep.current_secret_number;
1787 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1788 inp->sctp_ep.secret_key[secret][i] =
1789 sctp_select_initial_TSN(&inp->sctp_ep);
1791 SCTP_INP_WUNLOCK(inp);
1792 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1796 case SCTP_TIMER_TYPE_PATHMTURAISE:
1797 if ((stcb == NULL) || (inp == NULL)) {
1800 SCTP_STAT_INCR(sctps_timopathmtu);
1801 sctp_pathmtu_timer(inp, stcb, net);
1804 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1805 if ((stcb == NULL) || (inp == NULL)) {
1808 if (sctp_shutdownack_timer(inp, stcb, net)) {
1809 /* no need to unlock on tcb its gone */
1812 SCTP_STAT_INCR(sctps_timoshutdownack);
1813 stcb->asoc.timoshutdownack++;
1814 #ifdef SCTP_AUDITING_ENABLED
1815 sctp_auditing(4, inp, stcb, net);
1817 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1819 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1820 if ((stcb == NULL) || (inp == NULL)) {
1823 SCTP_STAT_INCR(sctps_timoshutdownguard);
1824 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
1825 "Shutdown guard timer expired");
1826 sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
1827 /* no need to unlock on tcb its gone */
1830 case SCTP_TIMER_TYPE_STRRESET:
1831 if ((stcb == NULL) || (inp == NULL)) {
1834 if (sctp_strreset_timer(inp, stcb, net)) {
1835 /* no need to unlock on tcb its gone */
1838 SCTP_STAT_INCR(sctps_timostrmrst);
1839 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1841 case SCTP_TIMER_TYPE_ASCONF:
1842 if ((stcb == NULL) || (inp == NULL)) {
1845 if (sctp_asconf_timer(inp, stcb, net)) {
1846 /* no need to unlock on tcb its gone */
1849 SCTP_STAT_INCR(sctps_timoasconf);
1850 #ifdef SCTP_AUDITING_ENABLED
1851 sctp_auditing(4, inp, stcb, net);
1853 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1855 case SCTP_TIMER_TYPE_PRIM_DELETED:
1856 if ((stcb == NULL) || (inp == NULL)) {
1859 sctp_delete_prim_timer(inp, stcb, net);
1860 SCTP_STAT_INCR(sctps_timodelprim);
1863 case SCTP_TIMER_TYPE_AUTOCLOSE:
1864 if ((stcb == NULL) || (inp == NULL)) {
1867 SCTP_STAT_INCR(sctps_timoautoclose);
1868 sctp_autoclose_timer(inp, stcb, net);
1869 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1872 case SCTP_TIMER_TYPE_ASOCKILL:
1873 if ((stcb == NULL) || (inp == NULL)) {
1876 SCTP_STAT_INCR(sctps_timoassockill);
1877 /* Can we free it yet? */
1878 SCTP_INP_DECR_REF(inp);
1879 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
1880 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1881 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1882 so = SCTP_INP_SO(inp);
1883 atomic_add_int(&stcb->asoc.refcnt, 1);
1884 SCTP_TCB_UNLOCK(stcb);
1885 SCTP_SOCKET_LOCK(so, 1);
1886 SCTP_TCB_LOCK(stcb);
1887 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1889 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
1890 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1891 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1892 SCTP_SOCKET_UNLOCK(so, 1);
1895 * free asoc, always unlocks (or destroy's) so prevent
1896 * duplicate unlock or unlock of a free mtx :-0
1900 case SCTP_TIMER_TYPE_INPKILL:
1901 SCTP_STAT_INCR(sctps_timoinpkill);
1906 * special case, take away our increment since WE are the
1909 SCTP_INP_DECR_REF(inp);
1910 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
1911 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1912 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1913 SCTP_CALLED_FROM_INPKILL_TIMER);
1917 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1921 #ifdef SCTP_AUDITING_ENABLED
1922 sctp_audit_log(0xF1, (uint8_t) type);
1924 sctp_auditing(5, inp, stcb, net);
1926 if ((did_output) && stcb) {
1928 * Now we need to clean up the control chunk chain if an
1929 * ECNE is on it. It must be marked as UNSENT again so next
1930 * call will continue to send it until such time that we get
1931 * a CWR, to remove it. It is, however, less likely that we
1932 * will find a ecn echo on the chain though.
1934 sctp_fix_ecn_echo(&stcb->asoc);
1938 SCTP_TCB_UNLOCK(stcb);
1942 SCTP_INP_DECR_REF(inp);
1945 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type);
1950 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1951 struct sctp_nets *net)
1954 struct sctp_timer *tmr;
1956 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1961 SCTP_TCB_LOCK_ASSERT(stcb);
1964 case SCTP_TIMER_TYPE_ZERO_COPY:
1965 tmr = &inp->sctp_ep.zero_copy_timer;
1966 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1968 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1969 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1970 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1972 case SCTP_TIMER_TYPE_ADDR_WQ:
1973 /* Only 1 tick away :-) */
1974 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1975 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1977 case SCTP_TIMER_TYPE_SEND:
1978 /* Here we use the RTO timer */
1982 if ((stcb == NULL) || (net == NULL)) {
1985 tmr = &net->rxt_timer;
1986 if (net->RTO == 0) {
1987 rto_val = stcb->asoc.initial_rto;
1991 to_ticks = MSEC_TO_TICKS(rto_val);
1994 case SCTP_TIMER_TYPE_INIT:
1996 * Here we use the INIT timer default usually about 1
1999 if ((stcb == NULL) || (net == NULL)) {
2002 tmr = &net->rxt_timer;
2003 if (net->RTO == 0) {
2004 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2006 to_ticks = MSEC_TO_TICKS(net->RTO);
2009 case SCTP_TIMER_TYPE_RECV:
2011 * Here we use the Delayed-Ack timer value from the inp
2012 * ususually about 200ms.
2017 tmr = &stcb->asoc.dack_timer;
2018 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
2020 case SCTP_TIMER_TYPE_SHUTDOWN:
2021 /* Here we use the RTO of the destination. */
2022 if ((stcb == NULL) || (net == NULL)) {
2025 if (net->RTO == 0) {
2026 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2028 to_ticks = MSEC_TO_TICKS(net->RTO);
2030 tmr = &net->rxt_timer;
2032 case SCTP_TIMER_TYPE_HEARTBEAT:
2034 * the net is used here so that we can add in the RTO. Even
2035 * though we use a different timer. We also add the HB timer
2036 * PLUS a random jitter.
2038 if ((stcb == NULL) || (net == NULL)) {
2044 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2045 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2048 if (net->RTO == 0) {
2049 to_ticks = stcb->asoc.initial_rto;
2051 to_ticks = net->RTO;
2053 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2054 jitter = rndval % to_ticks;
2055 if (jitter >= (to_ticks >> 1)) {
2056 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
2058 to_ticks = to_ticks - jitter;
2060 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2061 !(net->dest_state & SCTP_ADDR_PF)) {
2062 to_ticks += net->heart_beat_delay;
2065 * Now we must convert the to_ticks that are now in
2068 to_ticks = MSEC_TO_TICKS(to_ticks);
2069 tmr = &net->hb_timer;
2072 case SCTP_TIMER_TYPE_COOKIE:
2074 * Here we can use the RTO timer from the network since one
2075 * RTT was compelete. If a retran happened then we will be
2076 * using the RTO initial value.
2078 if ((stcb == NULL) || (net == NULL)) {
2081 if (net->RTO == 0) {
2082 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2084 to_ticks = MSEC_TO_TICKS(net->RTO);
2086 tmr = &net->rxt_timer;
2088 case SCTP_TIMER_TYPE_NEWCOOKIE:
2090 * nothing needed but the endpoint here ususually about 60
2093 tmr = &inp->sctp_ep.signature_change;
2094 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2096 case SCTP_TIMER_TYPE_ASOCKILL:
2100 tmr = &stcb->asoc.strreset_timer;
2101 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2103 case SCTP_TIMER_TYPE_INPKILL:
2105 * The inp is setup to die. We re-use the signature_chage
2106 * timer since that has stopped and we are in the GONE
2109 tmr = &inp->sctp_ep.signature_change;
2110 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2112 case SCTP_TIMER_TYPE_PATHMTURAISE:
2114 * Here we use the value found in the EP for PMTU ususually
2117 if ((stcb == NULL) || (net == NULL)) {
2120 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2123 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2124 tmr = &net->pmtu_timer;
2126 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2127 /* Here we use the RTO of the destination */
2128 if ((stcb == NULL) || (net == NULL)) {
2131 if (net->RTO == 0) {
2132 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2134 to_ticks = MSEC_TO_TICKS(net->RTO);
2136 tmr = &net->rxt_timer;
2138 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2140 * Here we use the endpoints shutdown guard timer usually
2146 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2147 to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto);
2149 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2151 tmr = &stcb->asoc.shut_guard_timer;
2153 case SCTP_TIMER_TYPE_STRRESET:
2155 * Here the timer comes from the stcb but its value is from
2158 if ((stcb == NULL) || (net == NULL)) {
2161 if (net->RTO == 0) {
2162 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2164 to_ticks = MSEC_TO_TICKS(net->RTO);
2166 tmr = &stcb->asoc.strreset_timer;
2168 case SCTP_TIMER_TYPE_ASCONF:
2170 * Here the timer comes from the stcb but its value is from
2173 if ((stcb == NULL) || (net == NULL)) {
2176 if (net->RTO == 0) {
2177 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2179 to_ticks = MSEC_TO_TICKS(net->RTO);
2181 tmr = &stcb->asoc.asconf_timer;
2183 case SCTP_TIMER_TYPE_PRIM_DELETED:
2184 if ((stcb == NULL) || (net != NULL)) {
2187 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2188 tmr = &stcb->asoc.delete_prim_timer;
2190 case SCTP_TIMER_TYPE_AUTOCLOSE:
2194 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2196 * Really an error since stcb is NOT set to
2201 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2202 tmr = &stcb->asoc.autoclose_timer;
2205 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2210 if ((to_ticks <= 0) || (tmr == NULL)) {
2211 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2212 __func__, t_type, to_ticks, (void *)tmr);
2215 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2217 * we do NOT allow you to have it already running. if it is
2218 * we leave the current one up unchanged
2222 /* At this point we can proceed */
2223 if (t_type == SCTP_TIMER_TYPE_SEND) {
2224 stcb->asoc.num_send_timers_up++;
2226 tmr->stopped_from = 0;
2228 tmr->ep = (void *)inp;
2229 tmr->tcb = (void *)stcb;
2230 tmr->net = (void *)net;
2231 tmr->self = (void *)tmr;
2232 tmr->vnet = (void *)curvnet;
2233 tmr->ticks = sctp_get_tick_count();
2234 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2239 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2240 struct sctp_nets *net, uint32_t from)
2242 struct sctp_timer *tmr;
2244 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2250 SCTP_TCB_LOCK_ASSERT(stcb);
2253 case SCTP_TIMER_TYPE_ZERO_COPY:
2254 tmr = &inp->sctp_ep.zero_copy_timer;
2256 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2257 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2259 case SCTP_TIMER_TYPE_ADDR_WQ:
2260 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2262 case SCTP_TIMER_TYPE_SEND:
2263 if ((stcb == NULL) || (net == NULL)) {
2266 tmr = &net->rxt_timer;
2268 case SCTP_TIMER_TYPE_INIT:
2269 if ((stcb == NULL) || (net == NULL)) {
2272 tmr = &net->rxt_timer;
2274 case SCTP_TIMER_TYPE_RECV:
2278 tmr = &stcb->asoc.dack_timer;
2280 case SCTP_TIMER_TYPE_SHUTDOWN:
2281 if ((stcb == NULL) || (net == NULL)) {
2284 tmr = &net->rxt_timer;
2286 case SCTP_TIMER_TYPE_HEARTBEAT:
2287 if ((stcb == NULL) || (net == NULL)) {
2290 tmr = &net->hb_timer;
2292 case SCTP_TIMER_TYPE_COOKIE:
2293 if ((stcb == NULL) || (net == NULL)) {
2296 tmr = &net->rxt_timer;
2298 case SCTP_TIMER_TYPE_NEWCOOKIE:
2299 /* nothing needed but the endpoint here */
2300 tmr = &inp->sctp_ep.signature_change;
2302 * We re-use the newcookie timer for the INP kill timer. We
2303 * must assure that we do not kill it by accident.
2306 case SCTP_TIMER_TYPE_ASOCKILL:
2308 * Stop the asoc kill timer.
2313 tmr = &stcb->asoc.strreset_timer;
2316 case SCTP_TIMER_TYPE_INPKILL:
2318 * The inp is setup to die. We re-use the signature_chage
2319 * timer since that has stopped and we are in the GONE
2322 tmr = &inp->sctp_ep.signature_change;
2324 case SCTP_TIMER_TYPE_PATHMTURAISE:
2325 if ((stcb == NULL) || (net == NULL)) {
2328 tmr = &net->pmtu_timer;
2330 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2331 if ((stcb == NULL) || (net == NULL)) {
2334 tmr = &net->rxt_timer;
2336 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2340 tmr = &stcb->asoc.shut_guard_timer;
2342 case SCTP_TIMER_TYPE_STRRESET:
2346 tmr = &stcb->asoc.strreset_timer;
2348 case SCTP_TIMER_TYPE_ASCONF:
2352 tmr = &stcb->asoc.asconf_timer;
2354 case SCTP_TIMER_TYPE_PRIM_DELETED:
2358 tmr = &stcb->asoc.delete_prim_timer;
2360 case SCTP_TIMER_TYPE_AUTOCLOSE:
2364 tmr = &stcb->asoc.autoclose_timer;
2367 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2374 if ((tmr->type != t_type) && tmr->type) {
2376 * Ok we have a timer that is under joint use. Cookie timer
2377 * per chance with the SEND timer. We therefore are NOT
2378 * running the timer that the caller wants stopped. So just
2383 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2384 stcb->asoc.num_send_timers_up--;
2385 if (stcb->asoc.num_send_timers_up < 0) {
2386 stcb->asoc.num_send_timers_up = 0;
2390 tmr->stopped_from = from;
2391 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2396 sctp_calculate_len(struct mbuf *m)
2403 tlen += SCTP_BUF_LEN(at);
2404 at = SCTP_BUF_NEXT(at);
2410 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2411 struct sctp_association *asoc, uint32_t mtu)
2414 * Reset the P-MTU size on this association, this involves changing
2415 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2416 * allow the DF flag to be cleared.
2418 struct sctp_tmit_chunk *chk;
2419 unsigned int eff_mtu, ovh;
2421 asoc->smallest_mtu = mtu;
2422 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2423 ovh = SCTP_MIN_OVERHEAD;
2425 ovh = SCTP_MIN_V4_OVERHEAD;
2427 eff_mtu = mtu - ovh;
2428 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2429 if (chk->send_size > eff_mtu) {
2430 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2433 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2434 if (chk->send_size > eff_mtu) {
2435 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2442 * given an association and starting time of the current RTT period return
2443 * RTO in number of msecs net should point to the current network
2447 sctp_calculate_rto(struct sctp_tcb *stcb,
2448 struct sctp_association *asoc,
2449 struct sctp_nets *net,
2450 struct timeval *told,
2451 int safe, int rtt_from_sack)
2454 * given an association and the starting time of the current RTT
2455 * period (in value1/value2) return RTO in number of msecs.
2457 int32_t rtt; /* RTT in ms */
2459 int first_measure = 0;
2460 struct timeval now, then, *old;
2462 /* Copy it out for sparc64 */
2463 if (safe == sctp_align_unsafe_makecopy) {
2465 memcpy(&then, told, sizeof(struct timeval));
2466 } else if (safe == sctp_align_safe_nocopy) {
2470 SCTP_PRINTF("Huh, bad rto calc call\n");
2473 /************************/
2474 /* 1. calculate new RTT */
2475 /************************/
2476 /* get the current time */
2477 if (stcb->asoc.use_precise_time) {
2478 (void)SCTP_GETPTIME_TIMEVAL(&now);
2480 (void)SCTP_GETTIME_TIMEVAL(&now);
2482 timevalsub(&now, old);
2483 /* store the current RTT in us */
2484 net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec +
2485 (uint64_t) now.tv_usec;
2487 /* compute rtt in ms */
2488 rtt = (int32_t) (net->rtt / 1000);
2489 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2491 * Tell the CC module that a new update has just occurred
2494 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2497 * Do we need to determine the lan? We do this only on sacks i.e.
2498 * RTT being determined from data not non-data (HB/INIT->INITACK).
2500 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2501 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2502 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2503 net->lan_type = SCTP_LAN_INTERNET;
2505 net->lan_type = SCTP_LAN_LOCAL;
2508 /***************************/
2509 /* 2. update RTTVAR & SRTT */
2510 /***************************/
2512 * Compute the scaled average lastsa and the
2513 * scaled variance lastsv as described in van Jacobson
2514 * Paper "Congestion Avoidance and Control", Annex A.
2516 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2517 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2519 if (net->RTO_measured) {
2520 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2525 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2527 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2528 rto_logging(net, SCTP_LOG_RTTVAR);
2531 /* First RTO measurment */
2532 net->RTO_measured = 1;
2534 net->lastsa = rtt << SCTP_RTT_SHIFT;
2535 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2536 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2537 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2540 if (net->lastsv == 0) {
2541 net->lastsv = SCTP_CLOCK_GRANULARITY;
2543 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2544 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2545 (stcb->asoc.sat_network_lockout == 0)) {
2546 stcb->asoc.sat_network = 1;
2547 } else if ((!first_measure) && stcb->asoc.sat_network) {
2548 stcb->asoc.sat_network = 0;
2549 stcb->asoc.sat_network_lockout = 1;
2551 /* bound it, per C6/C7 in Section 5.3.1 */
2552 if (new_rto < stcb->asoc.minrto) {
2553 new_rto = stcb->asoc.minrto;
2555 if (new_rto > stcb->asoc.maxrto) {
2556 new_rto = stcb->asoc.maxrto;
2558 /* we are now returning the RTO */
2563 * return a pointer to a contiguous piece of data from the given mbuf chain
2564 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2565 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2566 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2569 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
2575 if ((off < 0) || (len <= 0))
2578 /* find the desired start location */
2579 while ((m != NULL) && (off > 0)) {
2580 if (off < SCTP_BUF_LEN(m))
2582 off -= SCTP_BUF_LEN(m);
2583 m = SCTP_BUF_NEXT(m);
2588 /* is the current mbuf large enough (eg. contiguous)? */
2589 if ((SCTP_BUF_LEN(m) - off) >= len) {
2590 return (mtod(m, caddr_t)+off);
2592 /* else, it spans more than one mbuf, so save a temp copy... */
2593 while ((m != NULL) && (len > 0)) {
2594 count = min(SCTP_BUF_LEN(m) - off, len);
2595 bcopy(mtod(m, caddr_t)+off, ptr, count);
2599 m = SCTP_BUF_NEXT(m);
2601 if ((m == NULL) && (len > 0))
2604 return ((caddr_t)in_ptr);
2610 struct sctp_paramhdr *
2611 sctp_get_next_param(struct mbuf *m,
2613 struct sctp_paramhdr *pull,
2616 /* This just provides a typed signature to Peter's Pull routine */
2617 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2623 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2625 struct mbuf *m_last;
2631 if (padlen <= M_TRAILINGSPACE(m)) {
2633 * The easy way. We hope the majority of the time we hit
2638 /* Hard way we must grow the mbuf chain */
2639 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2640 if (m_last == NULL) {
2643 SCTP_BUF_LEN(m_last) = 0;
2644 SCTP_BUF_NEXT(m_last) = NULL;
2645 SCTP_BUF_NEXT(m) = m_last;
2647 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2648 SCTP_BUF_LEN(m_last) += padlen;
2649 memset(dp, 0, padlen);
2654 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2656 /* find the last mbuf in chain and pad it */
2659 if (last_mbuf != NULL) {
2660 return (sctp_add_pad_tombuf(last_mbuf, padval));
2662 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2663 if (SCTP_BUF_NEXT(m_at) == NULL) {
2664 return (sctp_add_pad_tombuf(m_at, padval));
2672 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2673 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2674 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2679 struct mbuf *m_notify;
2680 struct sctp_assoc_change *sac;
2681 struct sctp_queued_to_read *control;
2682 size_t notif_len, abort_len;
2685 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2693 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2694 notif_len = sizeof(struct sctp_assoc_change);
2695 if (abort != NULL) {
2696 abort_len = ntohs(abort->ch.chunk_length);
2700 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2701 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2702 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2703 notif_len += abort_len;
2705 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2706 if (m_notify == NULL) {
2707 /* Retry with smaller value. */
2708 notif_len = sizeof(struct sctp_assoc_change);
2709 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2710 if (m_notify == NULL) {
2714 SCTP_BUF_NEXT(m_notify) = NULL;
2715 sac = mtod(m_notify, struct sctp_assoc_change *);
2716 memset(sac, 0, notif_len);
2717 sac->sac_type = SCTP_ASSOC_CHANGE;
2719 sac->sac_length = sizeof(struct sctp_assoc_change);
2720 sac->sac_state = state;
2721 sac->sac_error = error;
2722 /* XXX verify these stream counts */
2723 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2724 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2725 sac->sac_assoc_id = sctp_get_associd(stcb);
2726 if (notif_len > sizeof(struct sctp_assoc_change)) {
2727 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2729 if (stcb->asoc.prsctp_supported == 1) {
2730 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2732 if (stcb->asoc.auth_supported == 1) {
2733 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2735 if (stcb->asoc.asconf_supported == 1) {
2736 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2738 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2739 if (stcb->asoc.reconfig_supported == 1) {
2740 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2742 sac->sac_length += i;
2743 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2744 memcpy(sac->sac_info, abort, abort_len);
2745 sac->sac_length += abort_len;
2748 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2749 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2750 0, 0, stcb->asoc.context, 0, 0, 0,
2752 if (control != NULL) {
2753 control->length = SCTP_BUF_LEN(m_notify);
2754 /* not that we need this */
2755 control->tail_mbuf = m_notify;
2756 control->spec_flags = M_NOTIFICATION;
2757 sctp_add_to_readq(stcb->sctp_ep, stcb,
2759 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2762 sctp_m_freem(m_notify);
2766 * For 1-to-1 style sockets, we send up and error when an ABORT
2770 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2771 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2772 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2773 SOCK_LOCK(stcb->sctp_socket);
2775 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2776 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2777 stcb->sctp_socket->so_error = ECONNREFUSED;
2779 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2780 stcb->sctp_socket->so_error = ECONNRESET;
2783 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2784 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2785 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2786 stcb->sctp_socket->so_error = ETIMEDOUT;
2788 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2789 stcb->sctp_socket->so_error = ECONNABORTED;
2793 /* Wake ANY sleepers */
2794 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2795 so = SCTP_INP_SO(stcb->sctp_ep);
2797 atomic_add_int(&stcb->asoc.refcnt, 1);
2798 SCTP_TCB_UNLOCK(stcb);
2799 SCTP_SOCKET_LOCK(so, 1);
2800 SCTP_TCB_LOCK(stcb);
2801 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2802 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2803 SCTP_SOCKET_UNLOCK(so, 1);
2808 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2809 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2810 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2811 socantrcvmore_locked(stcb->sctp_socket);
2813 sorwakeup(stcb->sctp_socket);
2814 sowwakeup(stcb->sctp_socket);
2815 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2817 SCTP_SOCKET_UNLOCK(so, 1);
2823 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2824 struct sockaddr *sa, uint32_t error, int so_locked
2825 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2830 struct mbuf *m_notify;
2831 struct sctp_paddr_change *spc;
2832 struct sctp_queued_to_read *control;
2834 if ((stcb == NULL) ||
2835 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2836 /* event not enabled */
2839 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2840 if (m_notify == NULL)
2842 SCTP_BUF_LEN(m_notify) = 0;
2843 spc = mtod(m_notify, struct sctp_paddr_change *);
2844 memset(spc, 0, sizeof(struct sctp_paddr_change));
2845 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2847 spc->spc_length = sizeof(struct sctp_paddr_change);
2848 switch (sa->sa_family) {
2852 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
2853 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
2854 (struct sockaddr_in6 *)&spc->spc_aaddr);
2856 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2859 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2866 struct sockaddr_in6 *sin6;
2868 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2870 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2871 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2872 if (sin6->sin6_scope_id == 0) {
2873 /* recover scope_id for user */
2874 (void)sa6_recoverscope(sin6);
2876 /* clear embedded scope_id for user */
2877 in6_clearscope(&sin6->sin6_addr);
2887 spc->spc_state = state;
2888 spc->spc_error = error;
2889 spc->spc_assoc_id = sctp_get_associd(stcb);
2891 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2892 SCTP_BUF_NEXT(m_notify) = NULL;
2894 /* append to socket */
2895 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2896 0, 0, stcb->asoc.context, 0, 0, 0,
2898 if (control == NULL) {
2900 sctp_m_freem(m_notify);
2903 control->length = SCTP_BUF_LEN(m_notify);
2904 control->spec_flags = M_NOTIFICATION;
2905 /* not that we need this */
2906 control->tail_mbuf = m_notify;
2907 sctp_add_to_readq(stcb->sctp_ep, stcb,
2909 &stcb->sctp_socket->so_rcv, 1,
2910 SCTP_READ_LOCK_NOT_HELD,
2916 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2917 struct sctp_tmit_chunk *chk, int so_locked
2918 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2923 struct mbuf *m_notify;
2924 struct sctp_send_failed *ssf;
2925 struct sctp_send_failed_event *ssfe;
2926 struct sctp_queued_to_read *control;
2929 if ((stcb == NULL) ||
2930 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2931 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2932 /* event not enabled */
2935 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2936 length = sizeof(struct sctp_send_failed_event);
2938 length = sizeof(struct sctp_send_failed);
2940 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2941 if (m_notify == NULL)
2944 SCTP_BUF_LEN(m_notify) = 0;
2945 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2946 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2947 memset(ssfe, 0, length);
2948 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2950 ssfe->ssfe_flags = SCTP_DATA_SENT;
2952 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2954 length += chk->send_size;
2955 length -= sizeof(struct sctp_data_chunk);
2956 ssfe->ssfe_length = length;
2957 ssfe->ssfe_error = error;
2958 /* not exactly what the user sent in, but should be close :) */
2959 ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number;
2960 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2961 ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype;
2962 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2963 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2964 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2965 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2967 ssf = mtod(m_notify, struct sctp_send_failed *);
2968 memset(ssf, 0, length);
2969 ssf->ssf_type = SCTP_SEND_FAILED;
2971 ssf->ssf_flags = SCTP_DATA_SENT;
2973 ssf->ssf_flags = SCTP_DATA_UNSENT;
2975 length += chk->send_size;
2976 length -= sizeof(struct sctp_data_chunk);
2977 ssf->ssf_length = length;
2978 ssf->ssf_error = error;
2979 /* not exactly what the user sent in, but should be close :) */
2980 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2981 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2982 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2983 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2984 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2985 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2986 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2987 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2988 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2992 * trim off the sctp chunk header(it should be there)
2994 if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
2995 m_adj(chk->data, sizeof(struct sctp_data_chunk));
2996 sctp_mbuf_crush(chk->data);
2997 chk->send_size -= sizeof(struct sctp_data_chunk);
3000 SCTP_BUF_NEXT(m_notify) = chk->data;
3001 /* Steal off the mbuf */
3004 * For this case, we check the actual socket buffer, since the assoc
3005 * is going away we don't want to overfill the socket buffer for a
3008 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3009 sctp_m_freem(m_notify);
3012 /* append to socket */
3013 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3014 0, 0, stcb->asoc.context, 0, 0, 0,
3016 if (control == NULL) {
3018 sctp_m_freem(m_notify);
3021 control->spec_flags = M_NOTIFICATION;
3022 sctp_add_to_readq(stcb->sctp_ep, stcb,
3024 &stcb->sctp_socket->so_rcv, 1,
3025 SCTP_READ_LOCK_NOT_HELD,
3031 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3032 struct sctp_stream_queue_pending *sp, int so_locked
3033 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3038 struct mbuf *m_notify;
3039 struct sctp_send_failed *ssf;
3040 struct sctp_send_failed_event *ssfe;
3041 struct sctp_queued_to_read *control;
3044 if ((stcb == NULL) ||
3045 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3046 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3047 /* event not enabled */
3050 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3051 length = sizeof(struct sctp_send_failed_event);
3053 length = sizeof(struct sctp_send_failed);
3055 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
3056 if (m_notify == NULL) {
3060 SCTP_BUF_LEN(m_notify) = 0;
3061 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3062 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3063 memset(ssfe, 0, length);
3064 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3065 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3066 length += sp->length;
3067 ssfe->ssfe_length = length;
3068 ssfe->ssfe_error = error;
3069 /* not exactly what the user sent in, but should be close :) */
3070 ssfe->ssfe_info.snd_sid = sp->stream;
3071 if (sp->some_taken) {
3072 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3074 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3076 ssfe->ssfe_info.snd_ppid = sp->ppid;
3077 ssfe->ssfe_info.snd_context = sp->context;
3078 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3079 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3080 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
3082 ssf = mtod(m_notify, struct sctp_send_failed *);
3083 memset(ssf, 0, length);
3084 ssf->ssf_type = SCTP_SEND_FAILED;
3085 ssf->ssf_flags = SCTP_DATA_UNSENT;
3086 length += sp->length;
3087 ssf->ssf_length = length;
3088 ssf->ssf_error = error;
3089 /* not exactly what the user sent in, but should be close :) */
3090 ssf->ssf_info.sinfo_stream = sp->stream;
3091 ssf->ssf_info.sinfo_ssn = 0;
3092 if (sp->some_taken) {
3093 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3095 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3097 ssf->ssf_info.sinfo_ppid = sp->ppid;
3098 ssf->ssf_info.sinfo_context = sp->context;
3099 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3100 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3101 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
3103 SCTP_BUF_NEXT(m_notify) = sp->data;
3105 /* Steal off the mbuf */
3108 * For this case, we check the actual socket buffer, since the assoc
3109 * is going away we don't want to overfill the socket buffer for a
3112 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3113 sctp_m_freem(m_notify);
3116 /* append to socket */
3117 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3118 0, 0, stcb->asoc.context, 0, 0, 0,
3120 if (control == NULL) {
3122 sctp_m_freem(m_notify);
3125 control->spec_flags = M_NOTIFICATION;
3126 sctp_add_to_readq(stcb->sctp_ep, stcb,
3128 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3134 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3136 struct mbuf *m_notify;
3137 struct sctp_adaptation_event *sai;
3138 struct sctp_queued_to_read *control;
3140 if ((stcb == NULL) ||
3141 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3142 /* event not enabled */
3145 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3146 if (m_notify == NULL)
3149 SCTP_BUF_LEN(m_notify) = 0;
3150 sai = mtod(m_notify, struct sctp_adaptation_event *);
3151 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3152 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3154 sai->sai_length = sizeof(struct sctp_adaptation_event);
3155 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3156 sai->sai_assoc_id = sctp_get_associd(stcb);
3158 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3159 SCTP_BUF_NEXT(m_notify) = NULL;
3161 /* append to socket */
3162 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3163 0, 0, stcb->asoc.context, 0, 0, 0,
3165 if (control == NULL) {
3167 sctp_m_freem(m_notify);
3170 control->length = SCTP_BUF_LEN(m_notify);
3171 control->spec_flags = M_NOTIFICATION;
3172 /* not that we need this */
3173 control->tail_mbuf = m_notify;
3174 sctp_add_to_readq(stcb->sctp_ep, stcb,
3176 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3179 /* This always must be called with the read-queue LOCKED in the INP */
3181 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3182 uint32_t val, int so_locked
3183 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3188 struct mbuf *m_notify;
3189 struct sctp_pdapi_event *pdapi;
3190 struct sctp_queued_to_read *control;
3193 if ((stcb == NULL) ||
3194 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3195 /* event not enabled */
3198 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3201 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3202 if (m_notify == NULL)
3205 SCTP_BUF_LEN(m_notify) = 0;
3206 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3207 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3208 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3209 pdapi->pdapi_flags = 0;
3210 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3211 pdapi->pdapi_indication = error;
3212 pdapi->pdapi_stream = (val >> 16);
3213 pdapi->pdapi_seq = (val & 0x0000ffff);
3214 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3216 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3217 SCTP_BUF_NEXT(m_notify) = NULL;
3218 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3219 0, 0, stcb->asoc.context, 0, 0, 0,
3221 if (control == NULL) {
3223 sctp_m_freem(m_notify);
3226 control->spec_flags = M_NOTIFICATION;
3227 control->length = SCTP_BUF_LEN(m_notify);
3228 /* not that we need this */
3229 control->tail_mbuf = m_notify;
3230 control->held_length = 0;
3231 control->length = 0;
3232 sb = &stcb->sctp_socket->so_rcv;
3233 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3234 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3236 sctp_sballoc(stcb, sb, m_notify);
3237 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3238 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3240 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3241 control->end_added = 1;
3242 if (stcb->asoc.control_pdapi)
3243 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3245 /* we really should not see this case */
3246 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3248 if (stcb->sctp_ep && stcb->sctp_socket) {
3249 /* This should always be the case */
3250 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3253 so = SCTP_INP_SO(stcb->sctp_ep);
3255 atomic_add_int(&stcb->asoc.refcnt, 1);
3256 SCTP_TCB_UNLOCK(stcb);
3257 SCTP_SOCKET_LOCK(so, 1);
3258 SCTP_TCB_LOCK(stcb);
3259 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3260 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3261 SCTP_SOCKET_UNLOCK(so, 1);
3266 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3267 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3269 SCTP_SOCKET_UNLOCK(so, 1);
3276 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3278 struct mbuf *m_notify;
3279 struct sctp_shutdown_event *sse;
3280 struct sctp_queued_to_read *control;
3283 * For TCP model AND UDP connected sockets we will send an error up
3284 * when an SHUTDOWN completes
3286 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3287 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3288 /* mark socket closed for read/write and wakeup! */
3289 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3292 so = SCTP_INP_SO(stcb->sctp_ep);
3293 atomic_add_int(&stcb->asoc.refcnt, 1);
3294 SCTP_TCB_UNLOCK(stcb);
3295 SCTP_SOCKET_LOCK(so, 1);
3296 SCTP_TCB_LOCK(stcb);
3297 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3298 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3299 SCTP_SOCKET_UNLOCK(so, 1);
3303 socantsendmore(stcb->sctp_socket);
3304 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3305 SCTP_SOCKET_UNLOCK(so, 1);
3308 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3309 /* event not enabled */
3312 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3313 if (m_notify == NULL)
3316 sse = mtod(m_notify, struct sctp_shutdown_event *);
3317 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3318 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3320 sse->sse_length = sizeof(struct sctp_shutdown_event);
3321 sse->sse_assoc_id = sctp_get_associd(stcb);
3323 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3324 SCTP_BUF_NEXT(m_notify) = NULL;
3326 /* append to socket */
3327 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3328 0, 0, stcb->asoc.context, 0, 0, 0,
3330 if (control == NULL) {
3332 sctp_m_freem(m_notify);
3335 control->spec_flags = M_NOTIFICATION;
3336 control->length = SCTP_BUF_LEN(m_notify);
3337 /* not that we need this */
3338 control->tail_mbuf = m_notify;
3339 sctp_add_to_readq(stcb->sctp_ep, stcb,
3341 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3345 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3347 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3352 struct mbuf *m_notify;
3353 struct sctp_sender_dry_event *event;
3354 struct sctp_queued_to_read *control;
3356 if ((stcb == NULL) ||
3357 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3358 /* event not enabled */
3361 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3362 if (m_notify == NULL) {
3366 SCTP_BUF_LEN(m_notify) = 0;
3367 event = mtod(m_notify, struct sctp_sender_dry_event *);
3368 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3369 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3370 event->sender_dry_flags = 0;
3371 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3372 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3374 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3375 SCTP_BUF_NEXT(m_notify) = NULL;
3377 /* append to socket */
3378 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3379 0, 0, stcb->asoc.context, 0, 0, 0,
3381 if (control == NULL) {
3383 sctp_m_freem(m_notify);
3386 control->length = SCTP_BUF_LEN(m_notify);
3387 control->spec_flags = M_NOTIFICATION;
3388 /* not that we need this */
3389 control->tail_mbuf = m_notify;
3390 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3391 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3396 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3398 struct mbuf *m_notify;
3399 struct sctp_queued_to_read *control;
3400 struct sctp_stream_change_event *stradd;
3402 if ((stcb == NULL) ||
3403 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3404 /* event not enabled */
3407 if ((stcb->asoc.peer_req_out) && flag) {
3408 /* Peer made the request, don't tell the local user */
3409 stcb->asoc.peer_req_out = 0;
3412 stcb->asoc.peer_req_out = 0;
3413 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3414 if (m_notify == NULL)
3417 SCTP_BUF_LEN(m_notify) = 0;
3418 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3419 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3420 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3421 stradd->strchange_flags = flag;
3422 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3423 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3424 stradd->strchange_instrms = numberin;
3425 stradd->strchange_outstrms = numberout;
3426 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3427 SCTP_BUF_NEXT(m_notify) = NULL;
3428 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3430 sctp_m_freem(m_notify);
3433 /* append to socket */
3434 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3435 0, 0, stcb->asoc.context, 0, 0, 0,
3437 if (control == NULL) {
3439 sctp_m_freem(m_notify);
3442 control->spec_flags = M_NOTIFICATION;
3443 control->length = SCTP_BUF_LEN(m_notify);
3444 /* not that we need this */
3445 control->tail_mbuf = m_notify;
3446 sctp_add_to_readq(stcb->sctp_ep, stcb,
3448 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3452 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3454 struct mbuf *m_notify;
3455 struct sctp_queued_to_read *control;
3456 struct sctp_assoc_reset_event *strasoc;
3458 if ((stcb == NULL) ||
3459 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3460 /* event not enabled */
3463 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3464 if (m_notify == NULL)
3467 SCTP_BUF_LEN(m_notify) = 0;
3468 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3469 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3470 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3471 strasoc->assocreset_flags = flag;
3472 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3473 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3474 strasoc->assocreset_local_tsn = sending_tsn;
3475 strasoc->assocreset_remote_tsn = recv_tsn;
3476 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3477 SCTP_BUF_NEXT(m_notify) = NULL;
3478 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3480 sctp_m_freem(m_notify);
3483 /* append to socket */
3484 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3485 0, 0, stcb->asoc.context, 0, 0, 0,
3487 if (control == NULL) {
3489 sctp_m_freem(m_notify);
3492 control->spec_flags = M_NOTIFICATION;
3493 control->length = SCTP_BUF_LEN(m_notify);
3494 /* not that we need this */
3495 control->tail_mbuf = m_notify;
3496 sctp_add_to_readq(stcb->sctp_ep, stcb,
3498 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3504 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3505 int number_entries, uint16_t * list, int flag)
3507 struct mbuf *m_notify;
3508 struct sctp_queued_to_read *control;
3509 struct sctp_stream_reset_event *strreset;
3512 if ((stcb == NULL) ||
3513 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3514 /* event not enabled */
3517 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3518 if (m_notify == NULL)
3521 SCTP_BUF_LEN(m_notify) = 0;
3522 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3523 if (len > M_TRAILINGSPACE(m_notify)) {
3524 /* never enough room */
3525 sctp_m_freem(m_notify);
3528 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3529 memset(strreset, 0, len);
3530 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3531 strreset->strreset_flags = flag;
3532 strreset->strreset_length = len;
3533 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3534 if (number_entries) {
3537 for (i = 0; i < number_entries; i++) {
3538 strreset->strreset_stream_list[i] = ntohs(list[i]);
3541 SCTP_BUF_LEN(m_notify) = len;
3542 SCTP_BUF_NEXT(m_notify) = NULL;
3543 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3545 sctp_m_freem(m_notify);
3548 /* append to socket */
3549 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3550 0, 0, stcb->asoc.context, 0, 0, 0,
3552 if (control == NULL) {
3554 sctp_m_freem(m_notify);
3557 control->spec_flags = M_NOTIFICATION;
3558 control->length = SCTP_BUF_LEN(m_notify);
3559 /* not that we need this */
3560 control->tail_mbuf = m_notify;
3561 sctp_add_to_readq(stcb->sctp_ep, stcb,
3563 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3568 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3570 struct mbuf *m_notify;
3571 struct sctp_remote_error *sre;
3572 struct sctp_queued_to_read *control;
3573 size_t notif_len, chunk_len;
3575 if ((stcb == NULL) ||
3576 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3579 if (chunk != NULL) {
3580 chunk_len = ntohs(chunk->ch.chunk_length);
3584 notif_len = sizeof(struct sctp_remote_error) + chunk_len;
3585 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3586 if (m_notify == NULL) {
3587 /* Retry with smaller value. */
3588 notif_len = sizeof(struct sctp_remote_error);
3589 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3590 if (m_notify == NULL) {
3594 SCTP_BUF_NEXT(m_notify) = NULL;
3595 sre = mtod(m_notify, struct sctp_remote_error *);
3596 memset(sre, 0, notif_len);
3597 sre->sre_type = SCTP_REMOTE_ERROR;
3599 sre->sre_length = sizeof(struct sctp_remote_error);
3600 sre->sre_error = error;
3601 sre->sre_assoc_id = sctp_get_associd(stcb);
3602 if (notif_len > sizeof(struct sctp_remote_error)) {
3603 memcpy(sre->sre_data, chunk, chunk_len);
3604 sre->sre_length += chunk_len;
3606 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3607 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3608 0, 0, stcb->asoc.context, 0, 0, 0,
3610 if (control != NULL) {
3611 control->length = SCTP_BUF_LEN(m_notify);
3612 /* not that we need this */
3613 control->tail_mbuf = m_notify;
3614 control->spec_flags = M_NOTIFICATION;
3615 sctp_add_to_readq(stcb->sctp_ep, stcb,
3617 &stcb->sctp_socket->so_rcv, 1,
3618 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3620 sctp_m_freem(m_notify);
3626 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3627 uint32_t error, void *data, int so_locked
3628 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3633 if ((stcb == NULL) ||
3634 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3635 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3636 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3637 /* If the socket is gone we are out of here */
3640 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3643 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3644 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3645 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3646 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3647 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3648 /* Don't report these in front states */
3652 switch (notification) {
3653 case SCTP_NOTIFY_ASSOC_UP:
3654 if (stcb->asoc.assoc_up_sent == 0) {
3655 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3656 stcb->asoc.assoc_up_sent = 1;
3658 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3659 sctp_notify_adaptation_layer(stcb);
3661 if (stcb->asoc.auth_supported == 0) {
3662 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3666 case SCTP_NOTIFY_ASSOC_DOWN:
3667 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3669 case SCTP_NOTIFY_INTERFACE_DOWN:
3671 struct sctp_nets *net;
3673 net = (struct sctp_nets *)data;
3674 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3675 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3678 case SCTP_NOTIFY_INTERFACE_UP:
3680 struct sctp_nets *net;
3682 net = (struct sctp_nets *)data;
3683 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3684 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3687 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3689 struct sctp_nets *net;
3691 net = (struct sctp_nets *)data;
3692 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3693 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3696 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3697 sctp_notify_send_failed2(stcb, error,
3698 (struct sctp_stream_queue_pending *)data, so_locked);
3700 case SCTP_NOTIFY_SENT_DG_FAIL:
3701 sctp_notify_send_failed(stcb, 1, error,
3702 (struct sctp_tmit_chunk *)data, so_locked);
3704 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3705 sctp_notify_send_failed(stcb, 0, error,
3706 (struct sctp_tmit_chunk *)data, so_locked);
3708 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3712 val = *((uint32_t *) data);
3714 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3717 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3718 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3719 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3720 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3722 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3725 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3726 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3727 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3728 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3730 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3733 case SCTP_NOTIFY_ASSOC_RESTART:
3734 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3735 if (stcb->asoc.auth_supported == 0) {
3736 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3740 case SCTP_NOTIFY_STR_RESET_SEND:
3741 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN);
3743 case SCTP_NOTIFY_STR_RESET_RECV:
3744 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING);
3746 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3747 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3748 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3750 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3751 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3752 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3754 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3755 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3756 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3758 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3759 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3760 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3762 case SCTP_NOTIFY_ASCONF_ADD_IP:
3763 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3766 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3767 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3770 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3771 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3774 case SCTP_NOTIFY_PEER_SHUTDOWN:
3775 sctp_notify_shutdown_event(stcb);
3777 case SCTP_NOTIFY_AUTH_NEW_KEY:
3778 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3779 (uint16_t) (uintptr_t) data,
3782 case SCTP_NOTIFY_AUTH_FREE_KEY:
3783 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3784 (uint16_t) (uintptr_t) data,
3787 case SCTP_NOTIFY_NO_PEER_AUTH:
3788 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3789 (uint16_t) (uintptr_t) data,
3792 case SCTP_NOTIFY_SENDER_DRY:
3793 sctp_notify_sender_dry_event(stcb, so_locked);
3795 case SCTP_NOTIFY_REMOTE_ERROR:
3796 sctp_notify_remote_error(stcb, error, data);
3799 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3800 __func__, notification, notification);
3806 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3807 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3812 struct sctp_association *asoc;
3813 struct sctp_stream_out *outs;
3814 struct sctp_tmit_chunk *chk, *nchk;
3815 struct sctp_stream_queue_pending *sp, *nsp;
3822 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3823 /* already being freed */
3826 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3827 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3828 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3831 /* now through all the gunk freeing chunks */
3832 if (holds_lock == 0) {
3833 SCTP_TCB_SEND_LOCK(stcb);
3835 /* sent queue SHOULD be empty */
3836 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3837 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3838 asoc->sent_queue_cnt--;
3839 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3840 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3841 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3844 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3848 if (chk->data != NULL) {
3849 sctp_free_bufspace(stcb, asoc, chk, 1);
3850 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3851 error, chk, so_locked);
3853 sctp_m_freem(chk->data);
3857 sctp_free_a_chunk(stcb, chk, so_locked);
3858 /* sa_ignore FREED_MEMORY */
3860 /* pending send queue SHOULD be empty */
3861 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3862 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3863 asoc->send_queue_cnt--;
3864 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3865 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3868 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3871 if (chk->data != NULL) {
3872 sctp_free_bufspace(stcb, asoc, chk, 1);
3873 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3874 error, chk, so_locked);
3876 sctp_m_freem(chk->data);
3880 sctp_free_a_chunk(stcb, chk, so_locked);
3881 /* sa_ignore FREED_MEMORY */
3883 for (i = 0; i < asoc->streamoutcnt; i++) {
3884 /* For each stream */
3885 outs = &asoc->strmout[i];
3886 /* clean up any sends there */
3887 asoc->locked_on_sending = NULL;
3888 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3889 asoc->stream_queue_cnt--;
3890 TAILQ_REMOVE(&outs->outqueue, sp, next);
3891 sctp_free_spbufspace(stcb, asoc, sp);
3893 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3894 error, (void *)sp, so_locked);
3896 sctp_m_freem(sp->data);
3898 sp->tail_mbuf = NULL;
3903 sctp_free_remote_addr(sp->net);
3906 /* Free the chunk */
3907 sctp_free_a_strmoq(stcb, sp, so_locked);
3908 /* sa_ignore FREED_MEMORY */
3912 if (holds_lock == 0) {
3913 SCTP_TCB_SEND_UNLOCK(stcb);
3918 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3919 struct sctp_abort_chunk *abort, int so_locked
3920 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3928 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3929 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3930 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3931 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3933 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3934 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3935 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3938 /* Tell them we lost the asoc */
3939 sctp_report_all_outbound(stcb, error, 1, so_locked);
3941 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3943 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3948 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3949 struct mbuf *m, int iphlen,
3950 struct sockaddr *src, struct sockaddr *dst,
3951 struct sctphdr *sh, struct mbuf *op_err,
3952 uint8_t mflowtype, uint32_t mflowid,
3953 uint32_t vrf_id, uint16_t port)
3957 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3964 /* We have a TCB to abort, send notification too */
3965 vtag = stcb->asoc.peer_vtag;
3966 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3967 /* get the assoc vrf id and table id */
3968 vrf_id = stcb->asoc.vrf_id;
3969 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3971 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3972 mflowtype, mflowid, inp->fibnum,
3975 /* Ok, now lets free it */
3976 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3977 so = SCTP_INP_SO(inp);
3978 atomic_add_int(&stcb->asoc.refcnt, 1);
3979 SCTP_TCB_UNLOCK(stcb);
3980 SCTP_SOCKET_LOCK(so, 1);
3981 SCTP_TCB_LOCK(stcb);
3982 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3984 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3985 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3986 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3987 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3989 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
3990 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
3991 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3992 SCTP_SOCKET_UNLOCK(so, 1);
3997 #ifdef SCTP_ASOCLOG_OF_TSNS
3999 sctp_print_out_track_log(struct sctp_tcb *stcb)
4004 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
4005 SCTP_PRINTF("IN bound TSN log-aaa\n");
4006 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4007 SCTP_PRINTF("None rcvd\n");
4010 if (stcb->asoc.tsn_in_wrapped) {
4011 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4012 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4013 stcb->asoc.in_tsnlog[i].tsn,
4014 stcb->asoc.in_tsnlog[i].strm,
4015 stcb->asoc.in_tsnlog[i].seq,
4016 stcb->asoc.in_tsnlog[i].flgs,
4017 stcb->asoc.in_tsnlog[i].sz);
4020 if (stcb->asoc.tsn_in_at) {
4021 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4022 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4023 stcb->asoc.in_tsnlog[i].tsn,
4024 stcb->asoc.in_tsnlog[i].strm,
4025 stcb->asoc.in_tsnlog[i].seq,
4026 stcb->asoc.in_tsnlog[i].flgs,
4027 stcb->asoc.in_tsnlog[i].sz);
4031 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4032 if ((stcb->asoc.tsn_out_at == 0) &&
4033 (stcb->asoc.tsn_out_wrapped == 0)) {
4034 SCTP_PRINTF("None sent\n");
4036 if (stcb->asoc.tsn_out_wrapped) {
4037 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4038 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4039 stcb->asoc.out_tsnlog[i].tsn,
4040 stcb->asoc.out_tsnlog[i].strm,
4041 stcb->asoc.out_tsnlog[i].seq,
4042 stcb->asoc.out_tsnlog[i].flgs,
4043 stcb->asoc.out_tsnlog[i].sz);
4046 if (stcb->asoc.tsn_out_at) {
4047 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4048 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4049 stcb->asoc.out_tsnlog[i].tsn,
4050 stcb->asoc.out_tsnlog[i].strm,
4051 stcb->asoc.out_tsnlog[i].seq,
4052 stcb->asoc.out_tsnlog[i].flgs,
4053 stcb->asoc.out_tsnlog[i].sz);
4062 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4063 struct mbuf *op_err,
4065 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4070 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4075 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4076 so = SCTP_INP_SO(inp);
4079 /* Got to have a TCB */
4080 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4081 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4082 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4083 SCTP_CALLED_DIRECTLY_NOCMPSET);
4088 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
4090 /* notify the ulp */
4091 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4092 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4094 /* notify the peer */
4095 sctp_send_abort_tcb(stcb, op_err, so_locked);
4096 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4097 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
4098 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4099 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4101 /* now free the asoc */
4102 #ifdef SCTP_ASOCLOG_OF_TSNS
4103 sctp_print_out_track_log(stcb);
4105 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4107 atomic_add_int(&stcb->asoc.refcnt, 1);
4108 SCTP_TCB_UNLOCK(stcb);
4109 SCTP_SOCKET_LOCK(so, 1);
4110 SCTP_TCB_LOCK(stcb);
4111 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4114 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4115 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4116 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4118 SCTP_SOCKET_UNLOCK(so, 1);
4124 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4125 struct sockaddr *src, struct sockaddr *dst,
4126 struct sctphdr *sh, struct sctp_inpcb *inp,
4128 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4129 uint32_t vrf_id, uint16_t port)
4131 struct sctp_chunkhdr *ch, chunk_buf;
4132 unsigned int chk_length;
4133 int contains_init_chunk;
4135 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4136 /* Generate a TO address for future reference */
4137 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4138 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4139 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4140 SCTP_CALLED_DIRECTLY_NOCMPSET);
4143 contains_init_chunk = 0;
4144 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4145 sizeof(*ch), (uint8_t *) & chunk_buf);
4146 while (ch != NULL) {
4147 chk_length = ntohs(ch->chunk_length);
4148 if (chk_length < sizeof(*ch)) {
4149 /* break to abort land */
4152 switch (ch->chunk_type) {
4154 contains_init_chunk = 1;
4156 case SCTP_PACKET_DROPPED:
4157 /* we don't respond to pkt-dropped */
4159 case SCTP_ABORT_ASSOCIATION:
4160 /* we don't respond with an ABORT to an ABORT */
4162 case SCTP_SHUTDOWN_COMPLETE:
4164 * we ignore it since we are not waiting for it and
4168 case SCTP_SHUTDOWN_ACK:
4169 sctp_send_shutdown_complete2(src, dst, sh,
4170 mflowtype, mflowid, fibnum,
4176 offset += SCTP_SIZE32(chk_length);
4177 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4178 sizeof(*ch), (uint8_t *) & chunk_buf);
4180 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4181 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4182 (contains_init_chunk == 0))) {
4183 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4184 mflowtype, mflowid, fibnum,
4190 * check the inbound datagram to make sure there is not an abort inside it,
4191 * if there is return 1, else return 0.
4194 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
4196 struct sctp_chunkhdr *ch;
4197 struct sctp_init_chunk *init_chk, chunk_buf;
4199 unsigned int chk_length;
4201 offset = iphlen + sizeof(struct sctphdr);
4202 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4203 (uint8_t *) & chunk_buf);
4204 while (ch != NULL) {
4205 chk_length = ntohs(ch->chunk_length);
4206 if (chk_length < sizeof(*ch)) {
4207 /* packet is probably corrupt */
4210 /* we seem to be ok, is it an abort? */
4211 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4212 /* yep, tell them */
4215 if (ch->chunk_type == SCTP_INITIATION) {
4216 /* need to update the Vtag */
4217 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4218 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
4219 if (init_chk != NULL) {
4220 *vtagfill = ntohl(init_chk->init.initiate_tag);
4223 /* Nope, move to the next chunk */
4224 offset += SCTP_SIZE32(chk_length);
4225 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4226 sizeof(*ch), (uint8_t *) & chunk_buf);
4232 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4233 * set (i.e. it's 0) so, create this function to compare link local scopes
4237 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4239 struct sockaddr_in6 a, b;
4245 if (a.sin6_scope_id == 0)
4246 if (sa6_recoverscope(&a)) {
4247 /* can't get scope, so can't match */
4250 if (b.sin6_scope_id == 0)
4251 if (sa6_recoverscope(&b)) {
4252 /* can't get scope, so can't match */
4255 if (a.sin6_scope_id != b.sin6_scope_id)
4262 * returns a sockaddr_in6 with embedded scope recovered and removed
4264 struct sockaddr_in6 *
4265 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4267 /* check and strip embedded scope junk */
4268 if (addr->sin6_family == AF_INET6) {
4269 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4270 if (addr->sin6_scope_id == 0) {
4272 if (!sa6_recoverscope(store)) {
4273 /* use the recovered scope */
4277 /* else, return the original "to" addr */
4278 in6_clearscope(&addr->sin6_addr);
4288 * are the two addresses the same? currently a "scopeless" check returns: 1
4292 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4296 if (sa1 == NULL || sa2 == NULL)
4299 /* must be the same family */
4300 if (sa1->sa_family != sa2->sa_family)
4303 switch (sa1->sa_family) {
4307 /* IPv6 addresses */
4308 struct sockaddr_in6 *sin6_1, *sin6_2;
4310 sin6_1 = (struct sockaddr_in6 *)sa1;
4311 sin6_2 = (struct sockaddr_in6 *)sa2;
4312 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4319 /* IPv4 addresses */
4320 struct sockaddr_in *sin_1, *sin_2;
4322 sin_1 = (struct sockaddr_in *)sa1;
4323 sin_2 = (struct sockaddr_in *)sa2;
4324 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4328 /* we don't do these... */
4334 sctp_print_address(struct sockaddr *sa)
4337 char ip6buf[INET6_ADDRSTRLEN];
4341 switch (sa->sa_family) {
4345 struct sockaddr_in6 *sin6;
4347 sin6 = (struct sockaddr_in6 *)sa;
4348 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4349 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4350 ntohs(sin6->sin6_port),
4351 sin6->sin6_scope_id);
4358 struct sockaddr_in *sin;
4361 sin = (struct sockaddr_in *)sa;
4362 p = (unsigned char *)&sin->sin_addr;
4363 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4364 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4375 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4376 struct sctp_inpcb *new_inp,
4377 struct sctp_tcb *stcb,
4381 * go through our old INP and pull off any control structures that
4382 * belong to stcb and move then to the new inp.
4384 struct socket *old_so, *new_so;
4385 struct sctp_queued_to_read *control, *nctl;
4386 struct sctp_readhead tmp_queue;
4390 old_so = old_inp->sctp_socket;
4391 new_so = new_inp->sctp_socket;
4392 TAILQ_INIT(&tmp_queue);
4393 error = sblock(&old_so->so_rcv, waitflags);
4396 * Gak, can't get sblock, we have a problem. data will be
4397 * left stranded.. and we don't dare look at it since the
4398 * other thread may be reading something. Oh well, its a
4399 * screwed up app that does a peeloff OR a accept while
4400 * reading from the main socket... actually its only the
4401 * peeloff() case, since I think read will fail on a
4402 * listening socket..
4406 /* lock the socket buffers */
4407 SCTP_INP_READ_LOCK(old_inp);
4408 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4409 /* Pull off all for out target stcb */
4410 if (control->stcb == stcb) {
4411 /* remove it we want it */
4412 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4413 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4416 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4417 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4419 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4420 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4421 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4423 m = SCTP_BUF_NEXT(m);
4427 SCTP_INP_READ_UNLOCK(old_inp);
4428 /* Remove the sb-lock on the old socket */
4430 sbunlock(&old_so->so_rcv);
4431 /* Now we move them over to the new socket buffer */
4432 SCTP_INP_READ_LOCK(new_inp);
4433 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4434 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4437 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4438 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4440 sctp_sballoc(stcb, &new_so->so_rcv, m);
4441 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4442 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4444 m = SCTP_BUF_NEXT(m);
4447 SCTP_INP_READ_UNLOCK(new_inp);
4451 sctp_add_to_readq(struct sctp_inpcb *inp,
4452 struct sctp_tcb *stcb,
4453 struct sctp_queued_to_read *control,
4456 int inp_read_lock_held,
4458 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4464 * Here we must place the control on the end of the socket read
4465 * queue AND increment sb_cc so that select will work properly on
4468 struct mbuf *m, *prev = NULL;
4473 panic("Gak, inp NULL on add_to_readq");
4477 if (inp_read_lock_held == 0)
4478 SCTP_INP_READ_LOCK(inp);
4479 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4480 sctp_free_remote_addr(control->whoFrom);
4481 if (control->data) {
4482 sctp_m_freem(control->data);
4483 control->data = NULL;
4485 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4486 if (inp_read_lock_held == 0)
4487 SCTP_INP_READ_UNLOCK(inp);
4490 if (!(control->spec_flags & M_NOTIFICATION)) {
4491 atomic_add_int(&inp->total_recvs, 1);
4492 if (!control->do_not_ref_stcb) {
4493 atomic_add_int(&stcb->total_recvs, 1);
4497 control->held_length = 0;
4498 control->length = 0;
4500 if (SCTP_BUF_LEN(m) == 0) {
4501 /* Skip mbufs with NO length */
4504 control->data = sctp_m_free(m);
4507 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4508 m = SCTP_BUF_NEXT(prev);
4511 control->tail_mbuf = prev;
4516 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4517 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4519 sctp_sballoc(stcb, sb, m);
4520 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4521 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4523 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4524 m = SCTP_BUF_NEXT(m);
4527 control->tail_mbuf = prev;
4529 /* Everything got collapsed out?? */
4530 sctp_free_remote_addr(control->whoFrom);
4531 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4532 if (inp_read_lock_held == 0)
4533 SCTP_INP_READ_UNLOCK(inp);
4537 control->end_added = 1;
4539 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4540 if (inp_read_lock_held == 0)
4541 SCTP_INP_READ_UNLOCK(inp);
4542 if (inp && inp->sctp_socket) {
4543 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4544 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4546 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4549 so = SCTP_INP_SO(inp);
4552 atomic_add_int(&stcb->asoc.refcnt, 1);
4553 SCTP_TCB_UNLOCK(stcb);
4555 SCTP_SOCKET_LOCK(so, 1);
4557 SCTP_TCB_LOCK(stcb);
4558 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4560 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4561 SCTP_SOCKET_UNLOCK(so, 1);
4566 sctp_sorwakeup(inp, inp->sctp_socket);
4567 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4569 SCTP_SOCKET_UNLOCK(so, 1);
4578 sctp_append_to_readq(struct sctp_inpcb *inp,
4579 struct sctp_tcb *stcb,
4580 struct sctp_queued_to_read *control,
4587 * A partial delivery API event is underway. OR we are appending on
4588 * the reassembly queue.
4590 * If PDAPI this means we need to add m to the end of the data.
4591 * Increase the length in the control AND increment the sb_cc.
4592 * Otherwise sb is NULL and all we need to do is put it at the end
4593 * of the mbuf chain.
4596 struct mbuf *mm, *tail = NULL, *prev = NULL;
4599 SCTP_INP_READ_LOCK(inp);
4601 if (control == NULL) {
4604 SCTP_INP_READ_UNLOCK(inp);
4608 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) {
4609 SCTP_INP_READ_UNLOCK(inp);
4612 if (control->end_added) {
4613 /* huh this one is complete? */
4621 if (SCTP_BUF_LEN(mm) == 0) {
4622 /* Skip mbufs with NO lenght */
4625 m = sctp_m_free(mm);
4628 SCTP_BUF_NEXT(prev) = sctp_m_free(mm);
4629 mm = SCTP_BUF_NEXT(prev);
4634 len += SCTP_BUF_LEN(mm);
4636 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4637 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm));
4639 sctp_sballoc(stcb, sb, mm);
4640 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4641 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4644 mm = SCTP_BUF_NEXT(mm);
4649 /* Really there should always be a prev */
4651 /* Huh nothing left? */
4653 panic("Nothing left to add?");
4660 if (control->tail_mbuf) {
4662 SCTP_BUF_NEXT(control->tail_mbuf) = m;
4663 control->tail_mbuf = tail;
4667 if (control->data != NULL) {
4668 panic("This should NOT happen");
4672 control->tail_mbuf = tail;
4674 atomic_add_int(&control->length, len);
4676 /* message is complete */
4677 if (stcb && (control == stcb->asoc.control_pdapi)) {
4678 stcb->asoc.control_pdapi = NULL;
4680 control->held_length = 0;
4681 control->end_added = 1;
4684 control->do_not_ref_stcb = 1;
4687 * When we are appending in partial delivery, the cum-ack is used
4688 * for the actual pd-api highest tsn on this mbuf. The true cum-ack
4689 * is populated in the outbound sinfo structure from the true cumack
4690 * if the association exists...
4692 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack;
4694 SCTP_INP_READ_UNLOCK(inp);
4696 if (inp && inp->sctp_socket) {
4697 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4698 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4700 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4703 so = SCTP_INP_SO(inp);
4705 atomic_add_int(&stcb->asoc.refcnt, 1);
4706 SCTP_TCB_UNLOCK(stcb);
4708 SCTP_SOCKET_LOCK(so, 1);
4710 SCTP_TCB_LOCK(stcb);
4711 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4713 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4714 SCTP_SOCKET_UNLOCK(so, 1);
4718 sctp_sorwakeup(inp, inp->sctp_socket);
4719 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4720 SCTP_SOCKET_UNLOCK(so, 1);
4729 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4730 *************ALTERNATE ROUTING CODE
4733 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4734 *************ALTERNATE ROUTING CODE
4738 sctp_generate_cause(uint16_t code, char *info)
4741 struct sctp_gen_error_cause *cause;
4742 size_t info_len, len;
4744 if ((code == 0) || (info == NULL)) {
4747 info_len = strlen(info);
4748 len = sizeof(struct sctp_paramhdr) + info_len;
4749 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4751 SCTP_BUF_LEN(m) = len;
4752 cause = mtod(m, struct sctp_gen_error_cause *);
4753 cause->code = htons(code);
4754 cause->length = htons((uint16_t) len);
4755 memcpy(cause->info, info, info_len);
4761 sctp_generate_no_user_data_cause(uint32_t tsn)
4764 struct sctp_error_no_user_data *no_user_data_cause;
4767 len = sizeof(struct sctp_error_no_user_data);
4768 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4770 SCTP_BUF_LEN(m) = len;
4771 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4772 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4773 no_user_data_cause->cause.length = htons((uint16_t) len);
4774 no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */
4779 #ifdef SCTP_MBCNT_LOGGING
4781 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4782 struct sctp_tmit_chunk *tp1, int chk_cnt)
4784 if (tp1->data == NULL) {
4787 asoc->chunks_on_out_queue -= chk_cnt;
4788 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4789 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4790 asoc->total_output_queue_size,
4795 if (asoc->total_output_queue_size >= tp1->book_size) {
4796 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4798 asoc->total_output_queue_size = 0;
4801 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4802 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4803 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4804 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4806 stcb->sctp_socket->so_snd.sb_cc = 0;
4815 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4816 uint8_t sent, int so_locked
4817 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4822 struct sctp_stream_out *strq;
4823 struct sctp_tmit_chunk *chk = NULL, *tp2;
4824 struct sctp_stream_queue_pending *sp;
4825 uint16_t stream = 0, seq = 0;
4826 uint8_t foundeom = 0;
4829 int do_wakeup_routine = 0;
4831 stream = tp1->rec.data.stream_number;
4832 seq = tp1->rec.data.stream_seq;
4833 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
4834 stcb->asoc.abandoned_sent[0]++;
4835 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4836 stcb->asoc.strmout[stream].abandoned_sent[0]++;
4837 #if defined(SCTP_DETAILED_STR_STATS)
4838 stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4841 stcb->asoc.abandoned_unsent[0]++;
4842 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4843 stcb->asoc.strmout[stream].abandoned_unsent[0]++;
4844 #if defined(SCTP_DETAILED_STR_STATS)
4845 stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4849 ret_sz += tp1->book_size;
4850 if (tp1->data != NULL) {
4851 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4852 sctp_flight_size_decrease(tp1);
4853 sctp_total_flight_decrease(stcb, tp1);
4855 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4856 stcb->asoc.peers_rwnd += tp1->send_size;
4857 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4859 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4861 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4864 sctp_m_freem(tp1->data);
4867 do_wakeup_routine = 1;
4868 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4869 stcb->asoc.sent_queue_cnt_removeable--;
4872 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4873 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4874 SCTP_DATA_NOT_FRAG) {
4875 /* not frag'ed we ae done */
4878 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4879 /* end of frag, we are done */
4884 * Its a begin or middle piece, we must mark all of
4888 tp1 = TAILQ_NEXT(tp1, sctp_next);
4890 } while (tp1 && notdone);
4891 if (foundeom == 0) {
4893 * The multi-part message was scattered across the send and
4896 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4897 if ((tp1->rec.data.stream_number != stream) ||
4898 (tp1->rec.data.stream_seq != seq)) {
4902 * save to chk in case we have some on stream out
4903 * queue. If so and we have an un-transmitted one we
4904 * don't have to fudge the TSN.
4907 ret_sz += tp1->book_size;
4908 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4910 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4912 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4915 sctp_m_freem(tp1->data);
4918 /* No flight involved here book the size to 0 */
4920 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4923 do_wakeup_routine = 1;
4924 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4925 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4927 * on to the sent queue so we can wait for it to be
4930 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4932 stcb->asoc.send_queue_cnt--;
4933 stcb->asoc.sent_queue_cnt++;
4936 if (foundeom == 0) {
4938 * Still no eom found. That means there is stuff left on the
4939 * stream out queue.. yuck.
4941 SCTP_TCB_SEND_LOCK(stcb);
4942 strq = &stcb->asoc.strmout[stream];
4943 sp = TAILQ_FIRST(&strq->outqueue);
4945 sp->discard_rest = 1;
4947 * We may need to put a chunk on the queue that
4948 * holds the TSN that would have been sent with the
4952 /* Yep, we have to */
4953 sctp_alloc_a_chunk(stcb, chk);
4956 * we are hosed. All we can do is
4957 * nothing.. which will cause an
4958 * abort if the peer is paying
4963 memset(chk, 0, sizeof(*chk));
4964 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG;
4965 chk->sent = SCTP_FORWARD_TSN_SKIP;
4966 chk->asoc = &stcb->asoc;
4967 chk->rec.data.stream_seq = strq->next_sequence_send;
4968 chk->rec.data.stream_number = sp->stream;
4969 chk->rec.data.payloadtype = sp->ppid;
4970 chk->rec.data.context = sp->context;
4971 chk->flags = sp->act_flags;
4973 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4974 strq->chunks_on_queues++;
4975 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4976 stcb->asoc.sent_queue_cnt++;
4977 stcb->asoc.pr_sctp_cnt++;
4979 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4981 strq->next_sequence_send++;
4985 * Pull any data to free up the SB and allow
4986 * sender to "add more" while we will throw
4989 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4990 ret_sz += sp->length;
4991 do_wakeup_routine = 1;
4993 sctp_m_freem(sp->data);
4995 sp->tail_mbuf = NULL;
4999 SCTP_TCB_SEND_UNLOCK(stcb);
5001 if (do_wakeup_routine) {
5002 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
5005 so = SCTP_INP_SO(stcb->sctp_ep);
5007 atomic_add_int(&stcb->asoc.refcnt, 1);
5008 SCTP_TCB_UNLOCK(stcb);
5009 SCTP_SOCKET_LOCK(so, 1);
5010 SCTP_TCB_LOCK(stcb);
5011 atomic_subtract_int(&stcb->asoc.refcnt, 1);
5012 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
5013 /* assoc was freed while we were unlocked */
5014 SCTP_SOCKET_UNLOCK(so, 1);
5019 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
5020 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
5022 SCTP_SOCKET_UNLOCK(so, 1);
5030 * checks to see if the given address, sa, is one that is currently known by
5031 * the kernel note: can't distinguish the same address on multiple interfaces
5032 * and doesn't handle multiple addresses with different zone/scope id's note:
5033 * ifa_ifwithaddr() compares the entire sockaddr struct
5036 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
5039 struct sctp_laddr *laddr;
5041 if (holds_lock == 0) {
5042 SCTP_INP_RLOCK(inp);
5044 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
5045 if (laddr->ifa == NULL)
5047 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
5050 if (addr->sa_family == AF_INET) {
5051 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5052 laddr->ifa->address.sin.sin_addr.s_addr) {
5054 if (holds_lock == 0) {
5055 SCTP_INP_RUNLOCK(inp);
5057 return (laddr->ifa);
5063 if (addr->sa_family == AF_INET6) {
5064 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5065 &laddr->ifa->address.sin6)) {
5067 if (holds_lock == 0) {
5068 SCTP_INP_RUNLOCK(inp);
5070 return (laddr->ifa);
5076 if (holds_lock == 0) {
5077 SCTP_INP_RUNLOCK(inp);
5083 sctp_get_ifa_hash_val(struct sockaddr *addr)
5085 switch (addr->sa_family) {
5089 struct sockaddr_in *sin;
5091 sin = (struct sockaddr_in *)addr;
5092 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
5098 struct sockaddr_in6 *sin6;
5099 uint32_t hash_of_addr;
5101 sin6 = (struct sockaddr_in6 *)addr;
5102 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5103 sin6->sin6_addr.s6_addr32[1] +
5104 sin6->sin6_addr.s6_addr32[2] +
5105 sin6->sin6_addr.s6_addr32[3]);
5106 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5107 return (hash_of_addr);
5117 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5119 struct sctp_ifa *sctp_ifap;
5120 struct sctp_vrf *vrf;
5121 struct sctp_ifalist *hash_head;
5122 uint32_t hash_of_addr;
5124 if (holds_lock == 0)
5125 SCTP_IPI_ADDR_RLOCK();
5127 vrf = sctp_find_vrf(vrf_id);
5129 if (holds_lock == 0)
5130 SCTP_IPI_ADDR_RUNLOCK();
5133 hash_of_addr = sctp_get_ifa_hash_val(addr);
5135 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5136 if (hash_head == NULL) {
5137 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5138 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
5139 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
5140 sctp_print_address(addr);
5141 SCTP_PRINTF("No such bucket for address\n");
5142 if (holds_lock == 0)
5143 SCTP_IPI_ADDR_RUNLOCK();
5147 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5148 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5151 if (addr->sa_family == AF_INET) {
5152 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5153 sctp_ifap->address.sin.sin_addr.s_addr) {
5155 if (holds_lock == 0)
5156 SCTP_IPI_ADDR_RUNLOCK();
5163 if (addr->sa_family == AF_INET6) {
5164 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5165 &sctp_ifap->address.sin6)) {
5167 if (holds_lock == 0)
5168 SCTP_IPI_ADDR_RUNLOCK();
5175 if (holds_lock == 0)
5176 SCTP_IPI_ADDR_RUNLOCK();
5181 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
5184 /* User pulled some data, do we need a rwnd update? */
5187 struct socket *so = NULL;
5192 atomic_add_int(&stcb->asoc.refcnt, 1);
5194 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5195 SCTP_STATE_SHUTDOWN_RECEIVED |
5196 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5197 /* Pre-check If we are freeing no update */
5200 SCTP_INP_INCR_REF(stcb->sctp_ep);
5201 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5202 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5205 so = stcb->sctp_socket;
5209 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5210 /* Have you have freed enough to look */
5212 /* Yep, its worth a look and the lock overhead */
5214 /* Figure out what the rwnd would be */
5215 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5216 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5217 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5221 if (dif >= rwnd_req) {
5223 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5226 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5228 * One last check before we allow the guy possibly
5229 * to get in. There is a race, where the guy has not
5230 * reached the gate. In that case
5234 SCTP_TCB_LOCK(stcb);
5235 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5236 /* No reports here */
5237 SCTP_TCB_UNLOCK(stcb);
5240 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5241 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5243 sctp_chunk_output(stcb->sctp_ep, stcb,
5244 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5245 /* make sure no timer is running */
5246 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5247 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5248 SCTP_TCB_UNLOCK(stcb);
5250 /* Update how much we have pending */
5251 stcb->freed_by_sorcv_sincelast = dif;
5254 if (so && r_unlocked && hold_rlock) {
5255 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5257 SCTP_INP_DECR_REF(stcb->sctp_ep);
5259 atomic_add_int(&stcb->asoc.refcnt, -1);
5264 sctp_sorecvmsg(struct socket *so,
5267 struct sockaddr *from,
5270 struct sctp_sndrcvinfo *sinfo,
5274 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5275 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5276 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5277 * On the way out we may send out any combination of:
5278 * MSG_NOTIFICATION MSG_EOR
5281 struct sctp_inpcb *inp = NULL;
5283 int cp_len = 0, error = 0;
5284 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5285 struct mbuf *m = NULL;
5286 struct sctp_tcb *stcb = NULL;
5287 int wakeup_read_socket = 0;
5288 int freecnt_applied = 0;
5289 int out_flags = 0, in_flags = 0;
5290 int block_allowed = 1;
5291 uint32_t freed_so_far = 0;
5292 uint32_t copied_so_far = 0;
5293 int in_eeor_mode = 0;
5294 int no_rcv_needed = 0;
5295 uint32_t rwnd_req = 0;
5296 int hold_sblock = 0;
5299 uint32_t held_length = 0;
5300 int sockbuf_lock = 0;
5303 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5307 in_flags = *msg_flags;
5308 if (in_flags & MSG_PEEK)
5309 SCTP_STAT_INCR(sctps_read_peeks);
5313 slen = uio->uio_resid;
5315 /* Pull in and set up our int flags */
5316 if (in_flags & MSG_OOB) {
5317 /* Out of band's NOT supported */
5318 return (EOPNOTSUPP);
5320 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5321 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5324 if ((in_flags & (MSG_DONTWAIT
5327 SCTP_SO_IS_NBIO(so)) {
5330 /* setup the endpoint */
5331 inp = (struct sctp_inpcb *)so->so_pcb;
5333 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5336 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5337 /* Must be at least a MTU's worth */
5338 if (rwnd_req < SCTP_MIN_RWND)
5339 rwnd_req = SCTP_MIN_RWND;
5340 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5341 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5342 sctp_misc_ints(SCTP_SORECV_ENTER,
5343 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid);
5345 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5346 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5347 rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid);
5349 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5351 goto release_unlocked;
5358 if (hold_sblock == 0) {
5359 SOCKBUF_LOCK(&so->so_rcv);
5362 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5363 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5366 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5368 error = so->so_error;
5369 if ((in_flags & MSG_PEEK) == 0)
5373 if (so->so_rcv.sb_cc == 0) {
5380 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
5381 /* we need to wait for data */
5382 if ((so->so_rcv.sb_cc == 0) &&
5383 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5384 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5385 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5387 * For active open side clear flags for
5388 * re-use passive open is blocked by
5391 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5393 * You were aborted, passive side
5396 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5399 so->so_state &= ~(SS_ISCONNECTING |
5400 SS_ISDISCONNECTING |
5404 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5405 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5412 error = sbwait(&so->so_rcv);
5417 goto restart_nosblocks;
5418 } else if (so->so_rcv.sb_cc == 0) {
5420 error = so->so_error;
5421 if ((in_flags & MSG_PEEK) == 0)
5424 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5425 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
5426 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5428 * For active open side clear flags
5429 * for re-use passive open is
5430 * blocked by connect.
5432 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5434 * You were aborted, passive
5435 * side always hits here
5437 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5440 so->so_state &= ~(SS_ISCONNECTING |
5441 SS_ISDISCONNECTING |
5445 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5446 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5453 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5454 error = EWOULDBLOCK;
5458 if (hold_sblock == 1) {
5459 SOCKBUF_UNLOCK(&so->so_rcv);
5462 /* we possibly have data we can read */
5463 /* sa_ignore FREED_MEMORY */
5464 control = TAILQ_FIRST(&inp->read_queue);
5465 if (control == NULL) {
5467 * This could be happening since the appender did the
5468 * increment but as not yet did the tailq insert onto the
5471 if (hold_rlock == 0) {
5472 SCTP_INP_READ_LOCK(inp);
5474 control = TAILQ_FIRST(&inp->read_queue);
5475 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5477 panic("Huh, its non zero and nothing on control?");
5479 so->so_rcv.sb_cc = 0;
5481 SCTP_INP_READ_UNLOCK(inp);
5485 if ((control->length == 0) &&
5486 (control->do_not_ref_stcb)) {
5488 * Clean up code for freeing assoc that left behind a
5489 * pdapi.. maybe a peer in EEOR that just closed after
5490 * sending and never indicated a EOR.
5492 if (hold_rlock == 0) {
5494 SCTP_INP_READ_LOCK(inp);
5496 control->held_length = 0;
5497 if (control->data) {
5498 /* Hmm there is data here .. fix */
5502 m_tmp = control->data;
5504 cnt += SCTP_BUF_LEN(m_tmp);
5505 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5506 control->tail_mbuf = m_tmp;
5507 control->end_added = 1;
5509 m_tmp = SCTP_BUF_NEXT(m_tmp);
5511 control->length = cnt;
5514 TAILQ_REMOVE(&inp->read_queue, control, next);
5515 /* Add back any hiddend data */
5516 sctp_free_remote_addr(control->whoFrom);
5517 sctp_free_a_readq(stcb, control);
5521 SCTP_INP_READ_UNLOCK(inp);
5525 if ((control->length == 0) &&
5526 (control->end_added == 1)) {
5528 * Do we also need to check for (control->pdapi_aborted ==
5531 if (hold_rlock == 0) {
5533 SCTP_INP_READ_LOCK(inp);
5535 TAILQ_REMOVE(&inp->read_queue, control, next);
5536 if (control->data) {
5538 panic("control->data not null but control->length == 0");
5540 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5541 sctp_m_freem(control->data);
5542 control->data = NULL;
5545 if (control->aux_data) {
5546 sctp_m_free(control->aux_data);
5547 control->aux_data = NULL;
5549 sctp_free_remote_addr(control->whoFrom);
5550 sctp_free_a_readq(stcb, control);
5553 SCTP_INP_READ_UNLOCK(inp);
5557 if (control->length == 0) {
5558 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5560 /* find a more suitable one then this */
5561 ctl = TAILQ_NEXT(control, next);
5563 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5565 (ctl->spec_flags & M_NOTIFICATION) ||
5566 ((ctl->do_not_ref_stcb == 0) &&
5567 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5570 * If we have a different TCB next, and there is data
5571 * present. If we have already taken some (pdapi), OR we can
5572 * ref the tcb and no delivery as started on this stream, we
5573 * take it. Note we allow a notification on a different
5574 * assoc to be delivered..
5578 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5580 ((ctl->some_taken) ||
5581 ((ctl->do_not_ref_stcb == 0) &&
5582 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5583 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5585 * If we have the same tcb, and there is data present, and we
5586 * have the strm interleave feature present. Then if we have
5587 * taken some (pdapi) or we can refer to tht tcb AND we have
5588 * not started a delivery for this stream, we can take it.
5589 * Note we do NOT allow a notificaiton on the same assoc to
5595 ctl = TAILQ_NEXT(ctl, next);
5599 * if we reach here, not suitable replacement is available
5600 * <or> fragment interleave is NOT on. So stuff the sb_cc
5601 * into the our held count, and its time to sleep again.
5603 held_length = so->so_rcv.sb_cc;
5604 control->held_length = so->so_rcv.sb_cc;
5607 /* Clear the held length since there is something to read */
5608 control->held_length = 0;
5610 SCTP_INP_READ_UNLOCK(inp);
5615 * If we reach here, control has a some data for us to read off.
5616 * Note that stcb COULD be NULL.
5618 control->some_taken++;
5620 SOCKBUF_UNLOCK(&so->so_rcv);
5623 stcb = control->stcb;
5625 if ((control->do_not_ref_stcb == 0) &&
5626 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5627 if (freecnt_applied == 0)
5629 } else if (control->do_not_ref_stcb == 0) {
5630 /* you can't free it on me please */
5632 * The lock on the socket buffer protects us so the
5633 * free code will stop. But since we used the
5634 * socketbuf lock and the sender uses the tcb_lock
5635 * to increment, we need to use the atomic add to
5638 if (freecnt_applied) {
5640 panic("refcnt already incremented");
5642 SCTP_PRINTF("refcnt already incremented?\n");
5645 atomic_add_int(&stcb->asoc.refcnt, 1);
5646 freecnt_applied = 1;
5649 * Setup to remember how much we have not yet told
5650 * the peer our rwnd has opened up. Note we grab the
5651 * value from the tcb from last time. Note too that
5652 * sack sending clears this when a sack is sent,
5653 * which is fine. Once we hit the rwnd_req, we then
5654 * will go to the sctp_user_rcvd() that will not
5655 * lock until it KNOWs it MUST send a WUP-SACK.
5657 freed_so_far = stcb->freed_by_sorcv_sincelast;
5658 stcb->freed_by_sorcv_sincelast = 0;
5662 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5663 control->do_not_ref_stcb == 0) {
5664 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5666 /* First lets get off the sinfo and sockaddr info */
5667 if ((sinfo) && filling_sinfo) {
5668 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo));
5669 nxt = TAILQ_NEXT(control, next);
5670 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5671 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5672 struct sctp_extrcvinfo *s_extra;
5674 s_extra = (struct sctp_extrcvinfo *)sinfo;
5677 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5678 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5679 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5681 if (nxt->spec_flags & M_NOTIFICATION) {
5682 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5684 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5685 s_extra->serinfo_next_length = nxt->length;
5686 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5687 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5688 if (nxt->tail_mbuf != NULL) {
5689 if (nxt->end_added) {
5690 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5695 * we explicitly 0 this, since the memcpy
5696 * got some other things beyond the older
5697 * sinfo_ that is on the control's structure
5701 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5702 s_extra->serinfo_next_aid = 0;
5703 s_extra->serinfo_next_length = 0;
5704 s_extra->serinfo_next_ppid = 0;
5705 s_extra->serinfo_next_stream = 0;
5709 * update off the real current cum-ack, if we have an stcb.
5711 if ((control->do_not_ref_stcb == 0) && stcb)
5712 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5714 * mask off the high bits, we keep the actual chunk bits in
5717 sinfo->sinfo_flags &= 0x00ff;
5718 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5719 sinfo->sinfo_flags |= SCTP_UNORDERED;
5722 #ifdef SCTP_ASOCLOG_OF_TSNS
5724 int index, newindex;
5725 struct sctp_pcbtsn_rlog *entry;
5728 index = inp->readlog_index;
5729 newindex = index + 1;
5730 if (newindex >= SCTP_READ_LOG_SIZE) {
5733 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5734 entry = &inp->readlog[index];
5735 entry->vtag = control->sinfo_assoc_id;
5736 entry->strm = control->sinfo_stream;
5737 entry->seq = control->sinfo_ssn;
5738 entry->sz = control->length;
5739 entry->flgs = control->sinfo_flags;
5742 if ((fromlen > 0) && (from != NULL)) {
5743 union sctp_sockstore store;
5746 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5749 len = sizeof(struct sockaddr_in6);
5750 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5751 store.sin6.sin6_port = control->port_from;
5757 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5758 len = sizeof(struct sockaddr_in6);
5759 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5761 store.sin6.sin6_port = control->port_from;
5763 len = sizeof(struct sockaddr_in);
5764 store.sin = control->whoFrom->ro._l_addr.sin;
5765 store.sin.sin_port = control->port_from;
5768 len = sizeof(struct sockaddr_in);
5769 store.sin = control->whoFrom->ro._l_addr.sin;
5770 store.sin.sin_port = control->port_from;
5778 memcpy(from, &store, min((size_t)fromlen, len));
5781 struct sockaddr_in6 lsa6, *from6;
5783 from6 = (struct sockaddr_in6 *)from;
5784 sctp_recover_scope_mac(from6, (&lsa6));
5788 /* now copy out what data we can */
5790 /* copy out each mbuf in the chain up to length */
5794 /* Move out all we can */
5795 cp_len = (int)uio->uio_resid;
5796 my_len = (int)SCTP_BUF_LEN(m);
5797 if (cp_len > my_len) {
5798 /* not enough in this buf */
5802 SCTP_INP_READ_UNLOCK(inp);
5806 error = uiomove(mtod(m, char *), cp_len, uio);
5808 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5811 if ((control->do_not_ref_stcb == 0) && stcb &&
5812 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5816 /* error we are out of here */
5819 if ((SCTP_BUF_NEXT(m) == NULL) &&
5820 (cp_len >= SCTP_BUF_LEN(m)) &&
5821 ((control->end_added == 0) ||
5822 (control->end_added &&
5823 (TAILQ_NEXT(control, next) == NULL)))
5825 SCTP_INP_READ_LOCK(inp);
5828 if (cp_len == SCTP_BUF_LEN(m)) {
5829 if ((SCTP_BUF_NEXT(m) == NULL) &&
5830 (control->end_added)) {
5831 out_flags |= MSG_EOR;
5832 if ((control->do_not_ref_stcb == 0) &&
5833 (control->stcb != NULL) &&
5834 ((control->spec_flags & M_NOTIFICATION) == 0))
5835 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5837 if (control->spec_flags & M_NOTIFICATION) {
5838 out_flags |= MSG_NOTIFICATION;
5840 /* we ate up the mbuf */
5841 if (in_flags & MSG_PEEK) {
5843 m = SCTP_BUF_NEXT(m);
5844 copied_so_far += cp_len;
5846 /* dispose of the mbuf */
5847 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5848 sctp_sblog(&so->so_rcv,
5849 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5851 sctp_sbfree(control, stcb, &so->so_rcv, m);
5852 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5853 sctp_sblog(&so->so_rcv,
5854 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5856 copied_so_far += cp_len;
5857 freed_so_far += cp_len;
5858 freed_so_far += MSIZE;
5859 atomic_subtract_int(&control->length, cp_len);
5860 control->data = sctp_m_free(m);
5863 * been through it all, must hold sb
5864 * lock ok to null tail
5866 if (control->data == NULL) {
5868 if ((control->end_added == 0) ||
5869 (TAILQ_NEXT(control, next) == NULL)) {
5877 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5878 panic("Hmm we don't own the lock?");
5882 control->tail_mbuf = NULL;
5884 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5885 panic("end_added, nothing left and no MSG_EOR");
5891 /* Do we need to trim the mbuf? */
5892 if (control->spec_flags & M_NOTIFICATION) {
5893 out_flags |= MSG_NOTIFICATION;
5895 if ((in_flags & MSG_PEEK) == 0) {
5896 SCTP_BUF_RESV_UF(m, cp_len);
5897 SCTP_BUF_LEN(m) -= cp_len;
5898 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5899 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5901 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5902 if ((control->do_not_ref_stcb == 0) &&
5904 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5906 copied_so_far += cp_len;
5907 freed_so_far += cp_len;
5908 freed_so_far += MSIZE;
5909 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5910 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5911 SCTP_LOG_SBRESULT, 0);
5913 atomic_subtract_int(&control->length, cp_len);
5915 copied_so_far += cp_len;
5918 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5921 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5922 (control->do_not_ref_stcb == 0) &&
5923 (freed_so_far >= rwnd_req)) {
5924 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5926 } /* end while(m) */
5928 * At this point we have looked at it all and we either have
5929 * a MSG_EOR/or read all the user wants... <OR>
5930 * control->length == 0.
5932 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5933 /* we are done with this control */
5934 if (control->length == 0) {
5935 if (control->data) {
5937 panic("control->data not null at read eor?");
5939 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5940 sctp_m_freem(control->data);
5941 control->data = NULL;
5945 if (TAILQ_NEXT(control, next) == NULL) {
5947 * If we don't have a next we need a
5948 * lock, if there is a next
5949 * interrupt is filling ahead of us
5950 * and we don't need a lock to
5951 * remove this guy (which is the
5952 * head of the queue).
5954 if (hold_rlock == 0) {
5955 SCTP_INP_READ_LOCK(inp);
5959 TAILQ_REMOVE(&inp->read_queue, control, next);
5960 /* Add back any hiddend data */
5961 if (control->held_length) {
5963 control->held_length = 0;
5964 wakeup_read_socket = 1;
5966 if (control->aux_data) {
5967 sctp_m_free(control->aux_data);
5968 control->aux_data = NULL;
5970 no_rcv_needed = control->do_not_ref_stcb;
5971 sctp_free_remote_addr(control->whoFrom);
5972 control->data = NULL;
5973 sctp_free_a_readq(stcb, control);
5975 if ((freed_so_far >= rwnd_req) &&
5976 (no_rcv_needed == 0))
5977 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5981 * The user did not read all of this
5982 * message, turn off the returned MSG_EOR
5983 * since we are leaving more behind on the
5987 if (control->end_added &&
5988 (control->data == NULL) &&
5989 (control->tail_mbuf == NULL)) {
5990 panic("Gak, control->length is corrupt?");
5993 no_rcv_needed = control->do_not_ref_stcb;
5994 out_flags &= ~MSG_EOR;
5997 if (out_flags & MSG_EOR) {
6000 if ((uio->uio_resid == 0) ||
6002 (copied_so_far >= (uint32_t) max(so->so_rcv.sb_lowat, 1)))) {
6006 * If I hit here the receiver wants more and this message is
6007 * NOT done (pd-api). So two questions. Can we block? if not
6008 * we are done. Did the user NOT set MSG_WAITALL?
6010 if (block_allowed == 0) {
6014 * We need to wait for more data a few things: - We don't
6015 * sbunlock() so we don't get someone else reading. - We
6016 * must be sure to account for the case where what is added
6017 * is NOT to our control when we wakeup.
6021 * Do we need to tell the transport a rwnd update might be
6022 * needed before we go to sleep?
6024 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
6025 ((freed_so_far >= rwnd_req) &&
6026 (control->do_not_ref_stcb == 0) &&
6027 (no_rcv_needed == 0))) {
6028 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6031 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
6034 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
6037 if (hold_rlock == 1) {
6038 SCTP_INP_READ_UNLOCK(inp);
6041 if (hold_sblock == 0) {
6042 SOCKBUF_LOCK(&so->so_rcv);
6045 if ((copied_so_far) && (control->length == 0) &&
6046 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
6049 if (so->so_rcv.sb_cc <= control->held_length) {
6050 error = sbwait(&so->so_rcv);
6054 control->held_length = 0;
6057 SOCKBUF_UNLOCK(&so->so_rcv);
6060 if (control->length == 0) {
6061 /* still nothing here */
6062 if (control->end_added == 1) {
6063 /* he aborted, or is done i.e.did a shutdown */
6064 out_flags |= MSG_EOR;
6065 if (control->pdapi_aborted) {
6066 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6067 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6069 out_flags |= MSG_TRUNC;
6071 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
6072 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6074 goto done_with_control;
6076 if (so->so_rcv.sb_cc > held_length) {
6077 control->held_length = so->so_rcv.sb_cc;
6080 goto wait_some_more;
6081 } else if (control->data == NULL) {
6083 * we must re-sync since data is probably being
6086 SCTP_INP_READ_LOCK(inp);
6087 if ((control->length > 0) && (control->data == NULL)) {
6089 * big trouble.. we have the lock and its
6093 panic("Impossible data==NULL length !=0");
6095 out_flags |= MSG_EOR;
6096 out_flags |= MSG_TRUNC;
6097 control->length = 0;
6098 SCTP_INP_READ_UNLOCK(inp);
6099 goto done_with_control;
6101 SCTP_INP_READ_UNLOCK(inp);
6102 /* We will fall around to get more data */
6107 * Give caller back the mbuf chain,
6108 * store in uio_resid the length
6110 wakeup_read_socket = 0;
6111 if ((control->end_added == 0) ||
6112 (TAILQ_NEXT(control, next) == NULL)) {
6113 /* Need to get rlock */
6114 if (hold_rlock == 0) {
6115 SCTP_INP_READ_LOCK(inp);
6119 if (control->end_added) {
6120 out_flags |= MSG_EOR;
6121 if ((control->do_not_ref_stcb == 0) &&
6122 (control->stcb != NULL) &&
6123 ((control->spec_flags & M_NOTIFICATION) == 0))
6124 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6126 if (control->spec_flags & M_NOTIFICATION) {
6127 out_flags |= MSG_NOTIFICATION;
6129 uio->uio_resid = control->length;
6130 *mp = control->data;
6133 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6134 sctp_sblog(&so->so_rcv,
6135 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6137 sctp_sbfree(control, stcb, &so->so_rcv, m);
6138 freed_so_far += SCTP_BUF_LEN(m);
6139 freed_so_far += MSIZE;
6140 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6141 sctp_sblog(&so->so_rcv,
6142 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6144 m = SCTP_BUF_NEXT(m);
6146 control->data = control->tail_mbuf = NULL;
6147 control->length = 0;
6148 if (out_flags & MSG_EOR) {
6149 /* Done with this control */
6150 goto done_with_control;
6154 if (hold_rlock == 1) {
6155 SCTP_INP_READ_UNLOCK(inp);
6158 if (hold_sblock == 1) {
6159 SOCKBUF_UNLOCK(&so->so_rcv);
6162 sbunlock(&so->so_rcv);
6167 SOCKBUF_UNLOCK(&so->so_rcv);
6170 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6171 if ((freed_so_far >= rwnd_req) &&
6172 (control && (control->do_not_ref_stcb == 0)) &&
6173 (no_rcv_needed == 0))
6174 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6178 *msg_flags = out_flags;
6180 if (((out_flags & MSG_EOR) == 0) &&
6181 ((in_flags & MSG_PEEK) == 0) &&
6183 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6184 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6185 struct sctp_extrcvinfo *s_extra;
6187 s_extra = (struct sctp_extrcvinfo *)sinfo;
6188 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6190 if (hold_rlock == 1) {
6191 SCTP_INP_READ_UNLOCK(inp);
6194 SOCKBUF_UNLOCK(&so->so_rcv);
6197 sbunlock(&so->so_rcv);
6199 if (freecnt_applied) {
6201 * The lock on the socket buffer protects us so the free
6202 * code will stop. But since we used the socketbuf lock and
6203 * the sender uses the tcb_lock to increment, we need to use
6204 * the atomic add to the refcnt.
6208 panic("stcb for refcnt has gone NULL?");
6214 atomic_add_int(&stcb->asoc.refcnt, -1);
6215 /* Save the value back for next time */
6216 stcb->freed_by_sorcv_sincelast = freed_so_far;
6218 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6220 sctp_misc_ints(SCTP_SORECV_DONE,
6222 ((uio) ? (slen - uio->uio_resid) : slen),
6226 sctp_misc_ints(SCTP_SORECV_DONE,
6228 ((uio) ? (slen - uio->uio_resid) : slen),
6234 if (wakeup_read_socket) {
6235 sctp_sorwakeup(inp, so);
6241 #ifdef SCTP_MBUF_LOGGING
6243 sctp_m_free(struct mbuf *m)
6245 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6246 sctp_log_mb(m, SCTP_MBUF_IFREE);
6252 sctp_m_freem(struct mbuf *mb)
6255 mb = sctp_m_free(mb);
6261 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6264 * Given a local address. For all associations that holds the
6265 * address, request a peer-set-primary.
6267 struct sctp_ifa *ifa;
6268 struct sctp_laddr *wi;
6270 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6272 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6273 return (EADDRNOTAVAIL);
6276 * Now that we have the ifa we must awaken the iterator with this
6279 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6281 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6284 /* Now incr the count and int wi structure */
6285 SCTP_INCR_LADDR_COUNT();
6286 bzero(wi, sizeof(*wi));
6287 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6289 wi->action = SCTP_SET_PRIM_ADDR;
6290 atomic_add_int(&ifa->refcount, 1);
6292 /* Now add it to the work queue */
6293 SCTP_WQ_ADDR_LOCK();
6295 * Should this really be a tailq? As it is we will process the
6298 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6299 SCTP_WQ_ADDR_UNLOCK();
6300 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6301 (struct sctp_inpcb *)NULL,
6302 (struct sctp_tcb *)NULL,
6303 (struct sctp_nets *)NULL);
6309 sctp_soreceive(struct socket *so,
6310 struct sockaddr **psa,
6313 struct mbuf **controlp,
6317 uint8_t sockbuf[256];
6318 struct sockaddr *from;
6319 struct sctp_extrcvinfo sinfo;
6320 int filling_sinfo = 1;
6321 struct sctp_inpcb *inp;
6323 inp = (struct sctp_inpcb *)so->so_pcb;
6324 /* pickup the assoc we are reading from */
6326 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6329 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6330 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6331 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6332 (controlp == NULL)) {
6333 /* user does not want the sndrcv ctl */
6337 from = (struct sockaddr *)sockbuf;
6338 fromlen = sizeof(sockbuf);
6345 if (filling_sinfo) {
6346 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6348 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6349 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6350 if (controlp != NULL) {
6351 /* copy back the sinfo in a CMSG format */
6353 *controlp = sctp_build_ctl_nchunk(inp,
6354 (struct sctp_sndrcvinfo *)&sinfo);
6359 /* copy back the address info */
6360 if (from && from->sa_len) {
6361 *psa = sodupsockaddr(from, M_NOWAIT);
6374 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6375 int totaddr, int *error)
6379 struct sctp_inpcb *inp;
6380 struct sockaddr *sa;
6384 struct sockaddr_in *sin;
6388 struct sockaddr_in6 *sin6;
6393 inp = stcb->sctp_ep;
6395 for (i = 0; i < totaddr; i++) {
6396 switch (sa->sa_family) {
6399 incr = sizeof(struct sockaddr_in);
6400 sin = (struct sockaddr_in *)sa;
6401 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6402 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6403 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6404 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6405 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6406 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6410 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6411 /* assoc gone no un-lock */
6412 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6413 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6414 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6423 incr = sizeof(struct sockaddr_in6);
6424 sin6 = (struct sockaddr_in6 *)sa;
6425 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6426 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6427 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6428 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6429 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6433 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6434 /* assoc gone no un-lock */
6435 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6436 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6437 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6447 sa = (struct sockaddr *)((caddr_t)sa + incr);
6454 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6455 int *totaddr, int *num_v4, int *num_v6, int *error,
6456 int limit, int *bad_addr)
6458 struct sockaddr *sa;
6459 struct sctp_tcb *stcb = NULL;
6465 *error = *num_v6 = *num_v4 = 0;
6466 /* account and validate addresses */
6467 for (i = 0; i < (size_t)*totaddr; i++) {
6468 switch (sa->sa_family) {
6472 incr = sizeof(struct sockaddr_in);
6473 if (sa->sa_len != incr) {
6474 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6484 struct sockaddr_in6 *sin6;
6486 sin6 = (struct sockaddr_in6 *)sa;
6487 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6488 /* Must be non-mapped for connectx */
6489 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6495 incr = sizeof(struct sockaddr_in6);
6496 if (sa->sa_len != incr) {
6497 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6510 if (i == (size_t)*totaddr) {
6513 SCTP_INP_INCR_REF(inp);
6514 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6516 /* Already have or am bring up an association */
6519 SCTP_INP_DECR_REF(inp);
6521 if ((at + incr) > (size_t)limit) {
6525 sa = (struct sockaddr *)((caddr_t)sa + incr);
6527 return ((struct sctp_tcb *)NULL);
6531 * sctp_bindx(ADD) for one address.
6532 * assumes all arguments are valid/checked by caller.
6535 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6536 struct sockaddr *sa, sctp_assoc_t assoc_id,
6537 uint32_t vrf_id, int *error, void *p)
6539 struct sockaddr *addr_touse;
6541 #if defined(INET) && defined(INET6)
6542 struct sockaddr_in sin;
6546 /* see if we're bound all already! */
6547 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6548 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6554 if (sa->sa_family == AF_INET6) {
6556 struct sockaddr_in6 *sin6;
6559 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6560 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6564 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6565 /* can only bind v6 on PF_INET6 sockets */
6566 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6571 sin6 = (struct sockaddr_in6 *)addr_touse;
6572 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6573 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6574 SCTP_IPV6_V6ONLY(inp)) {
6575 /* can't bind v4-mapped on PF_INET sockets */
6576 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6580 in6_sin6_2_sin(&sin, sin6);
6581 addr_touse = (struct sockaddr *)&sin;
6587 if (sa->sa_family == AF_INET) {
6588 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6589 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6593 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6594 SCTP_IPV6_V6ONLY(inp)) {
6595 /* can't bind v4 on PF_INET sockets */
6596 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6602 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6604 /* Can't get proc for Net/Open BSD */
6605 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6609 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6613 * No locks required here since bind and mgmt_ep_sa all do their own
6614 * locking. If we do something for the FIX: below we may need to
6615 * lock in that case.
6617 if (assoc_id == 0) {
6618 /* add the address */
6619 struct sctp_inpcb *lep;
6620 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6622 /* validate the incoming port */
6623 if ((lsin->sin_port != 0) &&
6624 (lsin->sin_port != inp->sctp_lport)) {
6625 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6629 /* user specified 0 port, set it to existing port */
6630 lsin->sin_port = inp->sctp_lport;
6633 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6636 * We must decrement the refcount since we have the
6637 * ep already and are binding. No remove going on
6640 SCTP_INP_DECR_REF(lep);
6643 /* already bound to it.. ok */
6645 } else if (lep == NULL) {
6646 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6647 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6648 SCTP_ADD_IP_ADDRESS,
6651 *error = EADDRINUSE;
6657 * FIX: decide whether we allow assoc based bindx
6663 * sctp_bindx(DELETE) for one address.
6664 * assumes all arguments are valid/checked by caller.
6667 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6668 struct sockaddr *sa, sctp_assoc_t assoc_id,
6669 uint32_t vrf_id, int *error)
6671 struct sockaddr *addr_touse;
6673 #if defined(INET) && defined(INET6)
6674 struct sockaddr_in sin;
6678 /* see if we're bound all already! */
6679 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6680 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6686 if (sa->sa_family == AF_INET6) {
6688 struct sockaddr_in6 *sin6;
6692 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6693 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6697 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6698 /* can only bind v6 on PF_INET6 sockets */
6699 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6704 sin6 = (struct sockaddr_in6 *)addr_touse;
6705 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6706 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6707 SCTP_IPV6_V6ONLY(inp)) {
6708 /* can't bind mapped-v4 on PF_INET sockets */
6709 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6713 in6_sin6_2_sin(&sin, sin6);
6714 addr_touse = (struct sockaddr *)&sin;
6720 if (sa->sa_family == AF_INET) {
6721 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6722 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6726 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6727 SCTP_IPV6_V6ONLY(inp)) {
6728 /* can't bind v4 on PF_INET sockets */
6729 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6736 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6737 * below is ever changed we may need to lock before calling
6738 * association level binding.
6740 if (assoc_id == 0) {
6741 /* delete the address */
6742 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6743 SCTP_DEL_IP_ADDRESS,
6747 * FIX: decide whether we allow assoc based bindx
6753 * returns the valid local address count for an assoc, taking into account
6757 sctp_local_addr_count(struct sctp_tcb *stcb)
6762 int ipv4_local_scope, ipv4_addr_legal;
6766 int local_scope, site_scope, ipv6_addr_legal;
6769 struct sctp_vrf *vrf;
6770 struct sctp_ifn *sctp_ifn;
6771 struct sctp_ifa *sctp_ifa;
6774 /* Turn on all the appropriate scopes */
6775 loopback_scope = stcb->asoc.scope.loopback_scope;
6777 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6778 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6781 local_scope = stcb->asoc.scope.local_scope;
6782 site_scope = stcb->asoc.scope.site_scope;
6783 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6785 SCTP_IPI_ADDR_RLOCK();
6786 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6788 /* no vrf, no addresses */
6789 SCTP_IPI_ADDR_RUNLOCK();
6792 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6794 * bound all case: go through all ifns on the vrf
6796 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6797 if ((loopback_scope == 0) &&
6798 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6801 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6802 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6804 switch (sctp_ifa->address.sa.sa_family) {
6807 if (ipv4_addr_legal) {
6808 struct sockaddr_in *sin;
6810 sin = &sctp_ifa->address.sin;
6811 if (sin->sin_addr.s_addr == 0) {
6818 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6819 &sin->sin_addr) != 0) {
6822 if ((ipv4_local_scope == 0) &&
6823 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6826 /* count this one */
6835 if (ipv6_addr_legal) {
6836 struct sockaddr_in6 *sin6;
6838 sin6 = &sctp_ifa->address.sin6;
6839 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6842 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6843 &sin6->sin6_addr) != 0) {
6846 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6847 if (local_scope == 0)
6849 if (sin6->sin6_scope_id == 0) {
6850 if (sa6_recoverscope(sin6) != 0)
6868 if ((site_scope == 0) &&
6869 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6872 /* count this one */
6887 struct sctp_laddr *laddr;
6889 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6891 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6894 /* count this one */
6898 SCTP_IPI_ADDR_RUNLOCK();
6902 #if defined(SCTP_LOCAL_TRACE_BUF)
6905 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)
6907 uint32_t saveindex, newindex;
6910 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6911 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6914 newindex = saveindex + 1;
6916 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6917 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6920 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6921 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6922 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6923 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6924 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6925 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6926 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6927 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6932 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
6933 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
6938 struct ip6_hdr *ip6;
6941 struct mbuf *sp, *last;
6942 struct udphdr *uhdr;
6945 if ((m->m_flags & M_PKTHDR) == 0) {
6946 /* Can't handle one that is not a pkt hdr */
6949 /* Pull the src port */
6950 iph = mtod(m, struct ip *);
6951 uhdr = (struct udphdr *)((caddr_t)iph + off);
6952 port = uhdr->uh_sport;
6954 * Split out the mbuf chain. Leave the IP header in m, place the
6957 sp = m_split(m, off, M_NOWAIT);
6959 /* Gak, drop packet, we can't do a split */
6962 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6963 /* Gak, packet can't have an SCTP header in it - too small */
6967 /* Now pull up the UDP header and SCTP header together */
6968 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6970 /* Gak pullup failed */
6973 /* Trim out the UDP header */
6974 m_adj(sp, sizeof(struct udphdr));
6976 /* Now reconstruct the mbuf chain */
6977 for (last = m; last->m_next; last = last->m_next);
6979 m->m_pkthdr.len += sp->m_pkthdr.len;
6981 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
6982 * checksum and it was valid. Since CSUM_DATA_VALID ==
6983 * CSUM_SCTP_VALID this would imply that the HW also verified the
6984 * SCTP checksum. Therefore, clear the bit.
6986 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
6987 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
6989 if_name(m->m_pkthdr.rcvif),
6990 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
6991 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
6992 iph = mtod(m, struct ip *);
6993 switch (iph->ip_v) {
6996 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
6997 sctp_input_with_port(m, off, port);
7001 case IPV6_VERSION >> 4:
7002 ip6 = mtod(m, struct ip6_hdr *);
7003 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
7004 sctp6_input_with_port(&m, &off, port);
7017 sctp_over_udp_stop(void)
7020 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7024 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7025 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7026 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7030 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7031 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7032 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7038 sctp_over_udp_start(void)
7044 struct sockaddr_in sin;
7048 struct sockaddr_in6 sin6;
7052 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7055 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7056 if (ntohs(port) == 0) {
7057 /* Must have a port set */
7061 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7062 /* Already running -- must stop first */
7067 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7068 /* Already running -- must stop first */
7073 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7074 SOCK_DGRAM, IPPROTO_UDP,
7075 curthread->td_ucred, curthread))) {
7076 sctp_over_udp_stop();
7079 /* Call the special UDP hook. */
7080 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7081 sctp_recv_udp_tunneled_packet, NULL))) {
7082 sctp_over_udp_stop();
7085 /* Ok, we have a socket, bind it to the port. */
7086 memset(&sin, 0, sizeof(struct sockaddr_in));
7087 sin.sin_len = sizeof(struct sockaddr_in);
7088 sin.sin_family = AF_INET;
7089 sin.sin_port = htons(port);
7090 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7091 (struct sockaddr *)&sin, curthread))) {
7092 sctp_over_udp_stop();
7097 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7098 SOCK_DGRAM, IPPROTO_UDP,
7099 curthread->td_ucred, curthread))) {
7100 sctp_over_udp_stop();
7103 /* Call the special UDP hook. */
7104 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7105 sctp_recv_udp_tunneled_packet, NULL))) {
7106 sctp_over_udp_stop();
7109 /* Ok, we have a socket, bind it to the port. */
7110 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7111 sin6.sin6_len = sizeof(struct sockaddr_in6);
7112 sin6.sin6_family = AF_INET6;
7113 sin6.sin6_port = htons(port);
7114 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7115 (struct sockaddr *)&sin6, curthread))) {
7116 sctp_over_udp_stop();