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>
56 #include <netinet/icmp6.h>
61 #define KTR_SCTP KTR_SUBSYS
64 extern const struct sctp_cc_functions sctp_cc_functions[];
65 extern const struct sctp_ss_functions sctp_ss_functions[];
68 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr)
70 struct sctp_cwnd_log sctp_clog;
72 sctp_clog.x.sb.stcb = stcb;
73 sctp_clog.x.sb.so_sbcc = sb->sb_cc;
75 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
77 sctp_clog.x.sb.stcb_sbcc = 0;
78 sctp_clog.x.sb.incr = incr;
79 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
82 sctp_clog.x.misc.log1,
83 sctp_clog.x.misc.log2,
84 sctp_clog.x.misc.log3,
85 sctp_clog.x.misc.log4);
89 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
91 struct sctp_cwnd_log sctp_clog;
93 sctp_clog.x.close.inp = (void *)inp;
94 sctp_clog.x.close.sctp_flags = inp->sctp_flags;
96 sctp_clog.x.close.stcb = (void *)stcb;
97 sctp_clog.x.close.state = (uint16_t) stcb->asoc.state;
99 sctp_clog.x.close.stcb = 0;
100 sctp_clog.x.close.state = 0;
102 sctp_clog.x.close.loc = loc;
103 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
104 SCTP_LOG_EVENT_CLOSE,
106 sctp_clog.x.misc.log1,
107 sctp_clog.x.misc.log2,
108 sctp_clog.x.misc.log3,
109 sctp_clog.x.misc.log4);
113 rto_logging(struct sctp_nets *net, int from)
115 struct sctp_cwnd_log sctp_clog;
117 memset(&sctp_clog, 0, sizeof(sctp_clog));
118 sctp_clog.x.rto.net = (void *)net;
119 sctp_clog.x.rto.rtt = net->rtt / 1000;
120 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
123 sctp_clog.x.misc.log1,
124 sctp_clog.x.misc.log2,
125 sctp_clog.x.misc.log3,
126 sctp_clog.x.misc.log4);
130 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
132 struct sctp_cwnd_log sctp_clog;
134 sctp_clog.x.strlog.stcb = stcb;
135 sctp_clog.x.strlog.n_tsn = tsn;
136 sctp_clog.x.strlog.n_sseq = sseq;
137 sctp_clog.x.strlog.e_tsn = 0;
138 sctp_clog.x.strlog.e_sseq = 0;
139 sctp_clog.x.strlog.strm = stream;
140 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
143 sctp_clog.x.misc.log1,
144 sctp_clog.x.misc.log2,
145 sctp_clog.x.misc.log3,
146 sctp_clog.x.misc.log4);
150 sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
152 struct sctp_cwnd_log sctp_clog;
154 sctp_clog.x.nagle.stcb = (void *)stcb;
155 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
156 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
157 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
158 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
159 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
160 SCTP_LOG_EVENT_NAGLE,
162 sctp_clog.x.misc.log1,
163 sctp_clog.x.misc.log2,
164 sctp_clog.x.misc.log3,
165 sctp_clog.x.misc.log4);
169 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
171 struct sctp_cwnd_log sctp_clog;
173 sctp_clog.x.sack.cumack = cumack;
174 sctp_clog.x.sack.oldcumack = old_cumack;
175 sctp_clog.x.sack.tsn = tsn;
176 sctp_clog.x.sack.numGaps = gaps;
177 sctp_clog.x.sack.numDups = dups;
178 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
181 sctp_clog.x.misc.log1,
182 sctp_clog.x.misc.log2,
183 sctp_clog.x.misc.log3,
184 sctp_clog.x.misc.log4);
188 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
190 struct sctp_cwnd_log sctp_clog;
192 memset(&sctp_clog, 0, sizeof(sctp_clog));
193 sctp_clog.x.map.base = map;
194 sctp_clog.x.map.cum = cum;
195 sctp_clog.x.map.high = high;
196 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
199 sctp_clog.x.misc.log1,
200 sctp_clog.x.misc.log2,
201 sctp_clog.x.misc.log3,
202 sctp_clog.x.misc.log4);
206 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from)
208 struct sctp_cwnd_log sctp_clog;
210 memset(&sctp_clog, 0, sizeof(sctp_clog));
211 sctp_clog.x.fr.largest_tsn = biggest_tsn;
212 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
213 sctp_clog.x.fr.tsn = tsn;
214 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
217 sctp_clog.x.misc.log1,
218 sctp_clog.x.misc.log2,
219 sctp_clog.x.misc.log3,
220 sctp_clog.x.misc.log4);
223 #ifdef SCTP_MBUF_LOGGING
225 sctp_log_mb(struct mbuf *m, int from)
227 struct sctp_cwnd_log sctp_clog;
229 sctp_clog.x.mb.mp = m;
230 sctp_clog.x.mb.mbuf_flags = (uint8_t) (SCTP_BUF_GET_FLAGS(m));
231 sctp_clog.x.mb.size = (uint16_t) (SCTP_BUF_LEN(m));
232 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
233 if (SCTP_BUF_IS_EXTENDED(m)) {
234 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
235 sctp_clog.x.mb.refcnt = (uint8_t) (SCTP_BUF_EXTEND_REFCNT(m));
237 sctp_clog.x.mb.ext = 0;
238 sctp_clog.x.mb.refcnt = 0;
240 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
243 sctp_clog.x.misc.log1,
244 sctp_clog.x.misc.log2,
245 sctp_clog.x.misc.log3,
246 sctp_clog.x.misc.log4);
250 sctp_log_mbc(struct mbuf *m, int from)
254 for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
255 sctp_log_mb(mat, from);
262 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from)
264 struct sctp_cwnd_log sctp_clog;
266 if (control == NULL) {
267 SCTP_PRINTF("Gak log of NULL?\n");
270 sctp_clog.x.strlog.stcb = control->stcb;
271 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
272 sctp_clog.x.strlog.n_sseq = control->sinfo_ssn;
273 sctp_clog.x.strlog.strm = control->sinfo_stream;
274 if (poschk != NULL) {
275 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
276 sctp_clog.x.strlog.e_sseq = poschk->sinfo_ssn;
278 sctp_clog.x.strlog.e_tsn = 0;
279 sctp_clog.x.strlog.e_sseq = 0;
281 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
284 sctp_clog.x.misc.log1,
285 sctp_clog.x.misc.log2,
286 sctp_clog.x.misc.log3,
287 sctp_clog.x.misc.log4);
291 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
293 struct sctp_cwnd_log sctp_clog;
295 sctp_clog.x.cwnd.net = net;
296 if (stcb->asoc.send_queue_cnt > 255)
297 sctp_clog.x.cwnd.cnt_in_send = 255;
299 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
300 if (stcb->asoc.stream_queue_cnt > 255)
301 sctp_clog.x.cwnd.cnt_in_str = 255;
303 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
306 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
307 sctp_clog.x.cwnd.inflight = net->flight_size;
308 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
309 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
310 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
312 if (SCTP_CWNDLOG_PRESEND == from) {
313 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
315 sctp_clog.x.cwnd.cwnd_augment = augment;
316 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
319 sctp_clog.x.misc.log1,
320 sctp_clog.x.misc.log2,
321 sctp_clog.x.misc.log3,
322 sctp_clog.x.misc.log4);
326 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
328 struct sctp_cwnd_log sctp_clog;
330 memset(&sctp_clog, 0, sizeof(sctp_clog));
332 sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
335 sctp_clog.x.lock.sock = (void *)NULL;
337 sctp_clog.x.lock.inp = (void *)inp;
339 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
341 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
344 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
345 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
347 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
348 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
350 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
351 if (inp && (inp->sctp_socket)) {
352 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
353 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
354 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
356 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
357 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
358 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
360 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
363 sctp_clog.x.misc.log1,
364 sctp_clog.x.misc.log2,
365 sctp_clog.x.misc.log3,
366 sctp_clog.x.misc.log4);
370 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
372 struct sctp_cwnd_log sctp_clog;
374 memset(&sctp_clog, 0, sizeof(sctp_clog));
375 sctp_clog.x.cwnd.net = net;
376 sctp_clog.x.cwnd.cwnd_new_value = error;
377 sctp_clog.x.cwnd.inflight = net->flight_size;
378 sctp_clog.x.cwnd.cwnd_augment = burst;
379 if (stcb->asoc.send_queue_cnt > 255)
380 sctp_clog.x.cwnd.cnt_in_send = 255;
382 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
383 if (stcb->asoc.stream_queue_cnt > 255)
384 sctp_clog.x.cwnd.cnt_in_str = 255;
386 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
387 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
388 SCTP_LOG_EVENT_MAXBURST,
390 sctp_clog.x.misc.log1,
391 sctp_clog.x.misc.log2,
392 sctp_clog.x.misc.log3,
393 sctp_clog.x.misc.log4);
397 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
399 struct sctp_cwnd_log sctp_clog;
401 sctp_clog.x.rwnd.rwnd = peers_rwnd;
402 sctp_clog.x.rwnd.send_size = snd_size;
403 sctp_clog.x.rwnd.overhead = overhead;
404 sctp_clog.x.rwnd.new_rwnd = 0;
405 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
408 sctp_clog.x.misc.log1,
409 sctp_clog.x.misc.log2,
410 sctp_clog.x.misc.log3,
411 sctp_clog.x.misc.log4);
415 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
417 struct sctp_cwnd_log sctp_clog;
419 sctp_clog.x.rwnd.rwnd = peers_rwnd;
420 sctp_clog.x.rwnd.send_size = flight_size;
421 sctp_clog.x.rwnd.overhead = overhead;
422 sctp_clog.x.rwnd.new_rwnd = a_rwndval;
423 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
426 sctp_clog.x.misc.log1,
427 sctp_clog.x.misc.log2,
428 sctp_clog.x.misc.log3,
429 sctp_clog.x.misc.log4);
432 #ifdef SCTP_MBCNT_LOGGING
434 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
436 struct sctp_cwnd_log sctp_clog;
438 sctp_clog.x.mbcnt.total_queue_size = total_oq;
439 sctp_clog.x.mbcnt.size_change = book;
440 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
441 sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
442 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
443 SCTP_LOG_EVENT_MBCNT,
445 sctp_clog.x.misc.log1,
446 sctp_clog.x.misc.log2,
447 sctp_clog.x.misc.log3,
448 sctp_clog.x.misc.log4);
454 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
456 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
463 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from)
465 struct sctp_cwnd_log sctp_clog;
467 sctp_clog.x.wake.stcb = (void *)stcb;
468 sctp_clog.x.wake.wake_cnt = wake_cnt;
469 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
470 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
471 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
473 if (stcb->asoc.stream_queue_cnt < 0xff)
474 sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt;
476 sctp_clog.x.wake.stream_qcnt = 0xff;
478 if (stcb->asoc.chunks_on_out_queue < 0xff)
479 sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue;
481 sctp_clog.x.wake.chunks_on_oque = 0xff;
483 sctp_clog.x.wake.sctpflags = 0;
484 /* set in the defered mode stuff */
485 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
486 sctp_clog.x.wake.sctpflags |= 1;
487 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
488 sctp_clog.x.wake.sctpflags |= 2;
489 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
490 sctp_clog.x.wake.sctpflags |= 4;
491 /* what about the sb */
492 if (stcb->sctp_socket) {
493 struct socket *so = stcb->sctp_socket;
495 sctp_clog.x.wake.sbflags = (uint8_t) ((so->so_snd.sb_flags & 0x00ff));
497 sctp_clog.x.wake.sbflags = 0xff;
499 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
502 sctp_clog.x.misc.log1,
503 sctp_clog.x.misc.log2,
504 sctp_clog.x.misc.log3,
505 sctp_clog.x.misc.log4);
509 sctp_log_block(uint8_t from, struct sctp_association *asoc, size_t sendlen)
511 struct sctp_cwnd_log sctp_clog;
513 sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
514 sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt);
515 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
516 sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt;
517 sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue;
518 sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight / 1024);
519 sctp_clog.x.blk.sndlen = (uint32_t) sendlen;
520 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
521 SCTP_LOG_EVENT_BLOCK,
523 sctp_clog.x.misc.log1,
524 sctp_clog.x.misc.log2,
525 sctp_clog.x.misc.log3,
526 sctp_clog.x.misc.log4);
530 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
532 /* May need to fix this if ktrdump does not work */
536 #ifdef SCTP_AUDITING_ENABLED
537 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
538 static int sctp_audit_indx = 0;
542 sctp_print_audit_report(void)
548 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
549 if ((sctp_audit_data[i][0] == 0xe0) &&
550 (sctp_audit_data[i][1] == 0x01)) {
553 } else if (sctp_audit_data[i][0] == 0xf0) {
556 } else if ((sctp_audit_data[i][0] == 0xc0) &&
557 (sctp_audit_data[i][1] == 0x01)) {
561 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
562 (uint32_t) sctp_audit_data[i][1]);
567 for (i = 0; i < sctp_audit_indx; i++) {
568 if ((sctp_audit_data[i][0] == 0xe0) &&
569 (sctp_audit_data[i][1] == 0x01)) {
572 } else if (sctp_audit_data[i][0] == 0xf0) {
575 } else if ((sctp_audit_data[i][0] == 0xc0) &&
576 (sctp_audit_data[i][1] == 0x01)) {
580 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
581 (uint32_t) sctp_audit_data[i][1]);
590 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
591 struct sctp_nets *net)
593 int resend_cnt, tot_out, rep, tot_book_cnt;
594 struct sctp_nets *lnet;
595 struct sctp_tmit_chunk *chk;
597 sctp_audit_data[sctp_audit_indx][0] = 0xAA;
598 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
600 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
604 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
605 sctp_audit_data[sctp_audit_indx][1] = 0x01;
607 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
613 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
614 sctp_audit_data[sctp_audit_indx][1] = 0x02;
616 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
621 sctp_audit_data[sctp_audit_indx][0] = 0xA1;
622 sctp_audit_data[sctp_audit_indx][1] =
623 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
625 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
630 resend_cnt = tot_out = 0;
631 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
632 if (chk->sent == SCTP_DATAGRAM_RESEND) {
634 } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
635 tot_out += chk->book_size;
639 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
640 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
641 sctp_audit_data[sctp_audit_indx][1] = 0xA1;
643 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
646 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
647 resend_cnt, stcb->asoc.sent_queue_retran_cnt);
649 stcb->asoc.sent_queue_retran_cnt = resend_cnt;
650 sctp_audit_data[sctp_audit_indx][0] = 0xA2;
651 sctp_audit_data[sctp_audit_indx][1] =
652 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
654 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
658 if (tot_out != stcb->asoc.total_flight) {
659 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
660 sctp_audit_data[sctp_audit_indx][1] = 0xA2;
662 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
666 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
667 (int)stcb->asoc.total_flight);
668 stcb->asoc.total_flight = tot_out;
670 if (tot_book_cnt != stcb->asoc.total_flight_count) {
671 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
672 sctp_audit_data[sctp_audit_indx][1] = 0xA5;
674 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
678 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
680 stcb->asoc.total_flight_count = tot_book_cnt;
683 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
684 tot_out += lnet->flight_size;
686 if (tot_out != stcb->asoc.total_flight) {
687 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
688 sctp_audit_data[sctp_audit_indx][1] = 0xA3;
690 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
694 SCTP_PRINTF("real flight:%d net total was %d\n",
695 stcb->asoc.total_flight, tot_out);
696 /* now corrective action */
697 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
700 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
701 if ((chk->whoTo == lnet) &&
702 (chk->sent < SCTP_DATAGRAM_RESEND)) {
703 tot_out += chk->book_size;
706 if (lnet->flight_size != tot_out) {
707 SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
708 (void *)lnet, lnet->flight_size,
710 lnet->flight_size = tot_out;
715 sctp_print_audit_report();
720 sctp_audit_log(uint8_t ev, uint8_t fd)
723 sctp_audit_data[sctp_audit_indx][0] = ev;
724 sctp_audit_data[sctp_audit_indx][1] = fd;
726 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
734 * sctp_stop_timers_for_shutdown() should be called
735 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
736 * state to make sure that all timers are stopped.
739 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
741 struct sctp_association *asoc;
742 struct sctp_nets *net;
746 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
747 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
748 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
749 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
750 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
751 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
752 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
753 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
758 * a list of sizes based on typical mtu's, used only if next hop size not
761 static uint32_t sctp_mtu_sizes[] = {
783 * Return the largest MTU smaller than val. If there is no
784 * entry, just return val.
787 sctp_get_prev_mtu(uint32_t val)
791 if (val <= sctp_mtu_sizes[0]) {
794 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
795 if (val <= sctp_mtu_sizes[i]) {
799 return (sctp_mtu_sizes[i - 1]);
803 * Return the smallest MTU larger than val. If there is no
804 * entry, just return val.
807 sctp_get_next_mtu(uint32_t val)
809 /* select another MTU that is just bigger than this one */
812 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
813 if (val < sctp_mtu_sizes[i]) {
814 return (sctp_mtu_sizes[i]);
821 sctp_fill_random_store(struct sctp_pcb *m)
824 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
825 * our counter. The result becomes our good random numbers and we
826 * then setup to give these out. Note that we do no locking to
827 * protect this. This is ok, since if competing folks call this we
828 * will get more gobbled gook in the random store which is what we
829 * want. There is a danger that two guys will use the same random
830 * numbers, but thats ok too since that is random as well :->
833 (void)sctp_hmac(SCTP_HMAC, (uint8_t *) m->random_numbers,
834 sizeof(m->random_numbers), (uint8_t *) & m->random_counter,
835 sizeof(m->random_counter), (uint8_t *) m->random_store);
840 sctp_select_initial_TSN(struct sctp_pcb *inp)
843 * A true implementation should use random selection process to get
844 * the initial stream sequence number, using RFC1750 as a good
849 int store_at, new_store;
851 if (inp->initial_sequence_debug != 0) {
854 ret = inp->initial_sequence_debug;
855 inp->initial_sequence_debug++;
859 store_at = inp->store_at;
860 new_store = store_at + sizeof(uint32_t);
861 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
864 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
867 if (new_store == 0) {
868 /* Refill the random store */
869 sctp_fill_random_store(inp);
871 p = &inp->random_store[store_at];
878 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
884 (void)SCTP_GETTIME_TIMEVAL(&now);
887 x = sctp_select_initial_TSN(&inp->sctp_ep);
892 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
900 sctp_map_assoc_state(int kernel_state)
904 if (kernel_state & SCTP_STATE_WAS_ABORTED) {
905 user_state = SCTP_CLOSED;
906 } else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) {
907 user_state = SCTP_SHUTDOWN_PENDING;
909 switch (kernel_state & SCTP_STATE_MASK) {
910 case SCTP_STATE_EMPTY:
911 user_state = SCTP_CLOSED;
913 case SCTP_STATE_INUSE:
914 user_state = SCTP_CLOSED;
916 case SCTP_STATE_COOKIE_WAIT:
917 user_state = SCTP_COOKIE_WAIT;
919 case SCTP_STATE_COOKIE_ECHOED:
920 user_state = SCTP_COOKIE_ECHOED;
922 case SCTP_STATE_OPEN:
923 user_state = SCTP_ESTABLISHED;
925 case SCTP_STATE_SHUTDOWN_SENT:
926 user_state = SCTP_SHUTDOWN_SENT;
928 case SCTP_STATE_SHUTDOWN_RECEIVED:
929 user_state = SCTP_SHUTDOWN_RECEIVED;
931 case SCTP_STATE_SHUTDOWN_ACK_SENT:
932 user_state = SCTP_SHUTDOWN_ACK_SENT;
935 user_state = SCTP_CLOSED;
943 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
944 uint32_t override_tag, uint32_t vrf_id, uint16_t o_strms)
946 struct sctp_association *asoc;
949 * Anything set to zero is taken care of by the allocation routine's
954 * Up front select what scoping to apply on addresses I tell my peer
955 * Not sure what to do with these right now, we will need to come up
956 * with a way to set them. We may need to pass them through from the
957 * caller in the sctp_aloc_assoc() function.
961 #if defined(SCTP_DETAILED_STR_STATS)
967 /* init all variables to a known value. */
968 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
969 asoc->max_burst = inp->sctp_ep.max_burst;
970 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
971 asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
972 asoc->cookie_life = inp->sctp_ep.def_cookie_life;
973 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
974 asoc->ecn_supported = inp->ecn_supported;
975 asoc->prsctp_supported = inp->prsctp_supported;
976 asoc->idata_supported = inp->idata_supported;
977 asoc->auth_supported = inp->auth_supported;
978 asoc->asconf_supported = inp->asconf_supported;
979 asoc->reconfig_supported = inp->reconfig_supported;
980 asoc->nrsack_supported = inp->nrsack_supported;
981 asoc->pktdrop_supported = inp->pktdrop_supported;
982 asoc->idata_supported = inp->idata_supported;
983 asoc->sctp_cmt_pf = (uint8_t) 0;
984 asoc->sctp_frag_point = inp->sctp_frag_point;
985 asoc->sctp_features = inp->sctp_features;
986 asoc->default_dscp = inp->sctp_ep.default_dscp;
987 asoc->max_cwnd = inp->max_cwnd;
989 if (inp->sctp_ep.default_flowlabel) {
990 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
992 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
993 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
994 asoc->default_flowlabel &= 0x000fffff;
995 asoc->default_flowlabel |= 0x80000000;
997 asoc->default_flowlabel = 0;
1001 asoc->sb_send_resv = 0;
1003 asoc->my_vtag = override_tag;
1005 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
1007 /* Get the nonce tags */
1008 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1009 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1010 asoc->vrf_id = vrf_id;
1012 #ifdef SCTP_ASOCLOG_OF_TSNS
1013 asoc->tsn_in_at = 0;
1014 asoc->tsn_out_at = 0;
1015 asoc->tsn_in_wrapped = 0;
1016 asoc->tsn_out_wrapped = 0;
1017 asoc->cumack_log_at = 0;
1018 asoc->cumack_log_atsnt = 0;
1020 #ifdef SCTP_FS_SPEC_LOG
1024 asoc->assoc_up_sent = 0;
1025 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
1026 sctp_select_initial_TSN(&inp->sctp_ep);
1027 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
1028 /* we are optimisitic here */
1029 asoc->peer_supports_nat = 0;
1030 asoc->sent_queue_retran_cnt = 0;
1033 asoc->last_net_cmt_send_started = NULL;
1035 /* This will need to be adjusted */
1036 asoc->last_acked_seq = asoc->init_seq_number - 1;
1037 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
1038 asoc->asconf_seq_in = asoc->last_acked_seq;
1040 /* here we are different, we hold the next one we expect */
1041 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
1043 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
1044 asoc->initial_rto = inp->sctp_ep.initial_rto;
1046 asoc->max_init_times = inp->sctp_ep.max_init_times;
1047 asoc->max_send_times = inp->sctp_ep.max_send_times;
1048 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
1049 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
1050 asoc->free_chunk_cnt = 0;
1052 asoc->iam_blocking = 0;
1053 asoc->context = inp->sctp_context;
1054 asoc->local_strreset_support = inp->local_strreset_support;
1055 asoc->def_send = inp->def_send;
1056 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1057 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
1058 asoc->pr_sctp_cnt = 0;
1059 asoc->total_output_queue_size = 0;
1061 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1062 asoc->scope.ipv6_addr_legal = 1;
1063 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1064 asoc->scope.ipv4_addr_legal = 1;
1066 asoc->scope.ipv4_addr_legal = 0;
1069 asoc->scope.ipv6_addr_legal = 0;
1070 asoc->scope.ipv4_addr_legal = 1;
1073 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1074 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1076 asoc->smallest_mtu = inp->sctp_frag_point;
1077 asoc->minrto = inp->sctp_ep.sctp_minrto;
1078 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1080 asoc->locked_on_sending = NULL;
1081 asoc->stream_locked_on = 0;
1082 asoc->ecn_echo_cnt_onq = 0;
1083 asoc->stream_locked = 0;
1085 asoc->send_sack = 1;
1087 LIST_INIT(&asoc->sctp_restricted_addrs);
1089 TAILQ_INIT(&asoc->nets);
1090 TAILQ_INIT(&asoc->pending_reply_queue);
1091 TAILQ_INIT(&asoc->asconf_ack_sent);
1092 /* Setup to fill the hb random cache at first HB */
1093 asoc->hb_random_idx = 4;
1095 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1097 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1098 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1100 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1101 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1104 * Now the stream parameters, here we allocate space for all streams
1105 * that we request by default.
1107 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1109 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1110 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1112 if (asoc->strmout == NULL) {
1113 /* big trouble no memory */
1114 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1117 for (i = 0; i < asoc->streamoutcnt; i++) {
1119 * inbound side must be set to 0xffff, also NOTE when we get
1120 * the INIT-ACK back (for INIT sender) we MUST reduce the
1121 * count (streamoutcnt) but first check if we sent to any of
1122 * the upper streams that were dropped (if some were). Those
1123 * that were dropped must be notified to the upper layer as
1126 asoc->strmout[i].next_sequence_send = 0x0;
1127 TAILQ_INIT(&asoc->strmout[i].outqueue);
1128 asoc->strmout[i].chunks_on_queues = 0;
1129 #if defined(SCTP_DETAILED_STR_STATS)
1130 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1131 asoc->strmout[i].abandoned_sent[j] = 0;
1132 asoc->strmout[i].abandoned_unsent[j] = 0;
1135 asoc->strmout[i].abandoned_sent[0] = 0;
1136 asoc->strmout[i].abandoned_unsent[0] = 0;
1138 asoc->strmout[i].stream_no = i;
1139 asoc->strmout[i].last_msg_incomplete = 0;
1140 asoc->strmout[i].state = SCTP_STREAM_OPENING;
1141 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL);
1143 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1145 /* Now the mapping array */
1146 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1147 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1149 if (asoc->mapping_array == NULL) {
1150 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1151 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1154 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1155 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1157 if (asoc->nr_mapping_array == NULL) {
1158 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1159 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1160 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1163 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1165 /* Now the init of the other outqueues */
1166 TAILQ_INIT(&asoc->free_chunks);
1167 TAILQ_INIT(&asoc->control_send_queue);
1168 TAILQ_INIT(&asoc->asconf_send_queue);
1169 TAILQ_INIT(&asoc->send_queue);
1170 TAILQ_INIT(&asoc->sent_queue);
1171 TAILQ_INIT(&asoc->resetHead);
1172 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1173 TAILQ_INIT(&asoc->asconf_queue);
1174 /* authentication fields */
1175 asoc->authinfo.random = NULL;
1176 asoc->authinfo.active_keyid = 0;
1177 asoc->authinfo.assoc_key = NULL;
1178 asoc->authinfo.assoc_keyid = 0;
1179 asoc->authinfo.recv_key = NULL;
1180 asoc->authinfo.recv_keyid = 0;
1181 LIST_INIT(&asoc->shared_keys);
1182 asoc->marked_retrans = 0;
1183 asoc->port = inp->sctp_ep.port;
1187 asoc->timoshutdown = 0;
1188 asoc->timoheartbeat = 0;
1189 asoc->timocookie = 0;
1190 asoc->timoshutdownack = 0;
1191 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1192 asoc->discontinuity_time = asoc->start_time;
1193 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1194 asoc->abandoned_unsent[i] = 0;
1195 asoc->abandoned_sent[i] = 0;
1198 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1199 * freed later when the association is freed.
1205 sctp_print_mapping_array(struct sctp_association *asoc)
1207 unsigned int i, limit;
1209 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1210 asoc->mapping_array_size,
1211 asoc->mapping_array_base_tsn,
1212 asoc->cumulative_tsn,
1213 asoc->highest_tsn_inside_map,
1214 asoc->highest_tsn_inside_nr_map);
1215 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1216 if (asoc->mapping_array[limit - 1] != 0) {
1220 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1221 for (i = 0; i < limit; i++) {
1222 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1226 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1227 if (asoc->nr_mapping_array[limit - 1]) {
1231 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1232 for (i = 0; i < limit; i++) {
1233 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1240 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1242 /* mapping array needs to grow */
1243 uint8_t *new_array1, *new_array2;
1246 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1247 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1248 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1249 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1250 /* can't get more, forget it */
1251 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1253 SCTP_FREE(new_array1, SCTP_M_MAP);
1256 SCTP_FREE(new_array2, SCTP_M_MAP);
1260 memset(new_array1, 0, new_size);
1261 memset(new_array2, 0, new_size);
1262 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1263 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1264 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1265 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1266 asoc->mapping_array = new_array1;
1267 asoc->nr_mapping_array = new_array2;
1268 asoc->mapping_array_size = new_size;
1274 sctp_iterator_work(struct sctp_iterator *it)
1276 int iteration_count = 0;
1279 struct sctp_inpcb *tinp;
1281 SCTP_INP_INFO_RLOCK();
1282 SCTP_ITERATOR_LOCK();
1284 SCTP_INP_RLOCK(it->inp);
1285 SCTP_INP_DECR_REF(it->inp);
1287 if (it->inp == NULL) {
1288 /* iterator is complete */
1290 SCTP_ITERATOR_UNLOCK();
1291 SCTP_INP_INFO_RUNLOCK();
1292 if (it->function_atend != NULL) {
1293 (*it->function_atend) (it->pointer, it->val);
1295 SCTP_FREE(it, SCTP_M_ITER);
1302 SCTP_INP_RLOCK(it->inp);
1304 while (((it->pcb_flags) &&
1305 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1306 ((it->pcb_features) &&
1307 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1308 /* endpoint flags or features don't match, so keep looking */
1309 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1310 SCTP_INP_RUNLOCK(it->inp);
1311 goto done_with_iterator;
1314 it->inp = LIST_NEXT(it->inp, sctp_list);
1315 SCTP_INP_RUNLOCK(tinp);
1316 if (it->inp == NULL) {
1317 goto done_with_iterator;
1319 SCTP_INP_RLOCK(it->inp);
1321 /* now go through each assoc which is in the desired state */
1322 if (it->done_current_ep == 0) {
1323 if (it->function_inp != NULL)
1324 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1325 it->done_current_ep = 1;
1327 if (it->stcb == NULL) {
1328 /* run the per instance function */
1329 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1331 if ((inp_skip) || it->stcb == NULL) {
1332 if (it->function_inp_end != NULL) {
1333 inp_skip = (*it->function_inp_end) (it->inp,
1337 SCTP_INP_RUNLOCK(it->inp);
1341 SCTP_TCB_LOCK(it->stcb);
1342 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1343 /* not in the right state... keep looking */
1344 SCTP_TCB_UNLOCK(it->stcb);
1347 /* see if we have limited out the iterator loop */
1349 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1350 /* Pause to let others grab the lock */
1351 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1352 SCTP_TCB_UNLOCK(it->stcb);
1353 SCTP_INP_INCR_REF(it->inp);
1354 SCTP_INP_RUNLOCK(it->inp);
1355 SCTP_ITERATOR_UNLOCK();
1356 SCTP_INP_INFO_RUNLOCK();
1357 SCTP_INP_INFO_RLOCK();
1358 SCTP_ITERATOR_LOCK();
1359 if (sctp_it_ctl.iterator_flags) {
1360 /* We won't be staying here */
1361 SCTP_INP_DECR_REF(it->inp);
1362 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1363 if (sctp_it_ctl.iterator_flags &
1364 SCTP_ITERATOR_STOP_CUR_IT) {
1365 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1366 goto done_with_iterator;
1368 if (sctp_it_ctl.iterator_flags &
1369 SCTP_ITERATOR_STOP_CUR_INP) {
1370 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1373 /* If we reach here huh? */
1374 SCTP_PRINTF("Unknown it ctl flag %x\n",
1375 sctp_it_ctl.iterator_flags);
1376 sctp_it_ctl.iterator_flags = 0;
1378 SCTP_INP_RLOCK(it->inp);
1379 SCTP_INP_DECR_REF(it->inp);
1380 SCTP_TCB_LOCK(it->stcb);
1381 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1382 iteration_count = 0;
1384 /* run function on this one */
1385 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1388 * we lie here, it really needs to have its own type but
1389 * first I must verify that this won't effect things :-0
1391 if (it->no_chunk_output == 0)
1392 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1394 SCTP_TCB_UNLOCK(it->stcb);
1396 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1397 if (it->stcb == NULL) {
1398 /* Run last function */
1399 if (it->function_inp_end != NULL) {
1400 inp_skip = (*it->function_inp_end) (it->inp,
1406 SCTP_INP_RUNLOCK(it->inp);
1408 /* done with all assocs on this endpoint, move on to next endpoint */
1409 it->done_current_ep = 0;
1410 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1413 it->inp = LIST_NEXT(it->inp, sctp_list);
1415 if (it->inp == NULL) {
1416 goto done_with_iterator;
1418 goto select_a_new_ep;
1422 sctp_iterator_worker(void)
1424 struct sctp_iterator *it, *nit;
1426 /* This function is called with the WQ lock in place */
1428 sctp_it_ctl.iterator_running = 1;
1429 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1430 sctp_it_ctl.cur_it = it;
1431 /* now lets work on this one */
1432 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1433 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1434 CURVNET_SET(it->vn);
1435 sctp_iterator_work(it);
1436 sctp_it_ctl.cur_it = NULL;
1438 SCTP_IPI_ITERATOR_WQ_LOCK();
1439 /* sa_ignore FREED_MEMORY */
1441 sctp_it_ctl.iterator_running = 0;
1447 sctp_handle_addr_wq(void)
1449 /* deal with the ADDR wq from the rtsock calls */
1450 struct sctp_laddr *wi, *nwi;
1451 struct sctp_asconf_iterator *asc;
1453 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1454 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1456 /* Try later, no memory */
1457 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1458 (struct sctp_inpcb *)NULL,
1459 (struct sctp_tcb *)NULL,
1460 (struct sctp_nets *)NULL);
1463 LIST_INIT(&asc->list_of_work);
1466 SCTP_WQ_ADDR_LOCK();
1467 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1468 LIST_REMOVE(wi, sctp_nxt_addr);
1469 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1472 SCTP_WQ_ADDR_UNLOCK();
1474 if (asc->cnt == 0) {
1475 SCTP_FREE(asc, SCTP_M_ASC_IT);
1479 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
1480 sctp_asconf_iterator_stcb,
1481 NULL, /* No ep end for boundall */
1482 SCTP_PCB_FLAGS_BOUNDALL,
1483 SCTP_PCB_ANY_FEATURES,
1484 SCTP_ASOC_ANY_STATE,
1486 sctp_asconf_iterator_end, NULL, 0);
1488 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
1490 * Freeing if we are stopping or put back on the
1493 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
1494 sctp_asconf_iterator_end(asc, 0);
1496 SCTP_WQ_ADDR_LOCK();
1497 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
1498 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
1500 SCTP_WQ_ADDR_UNLOCK();
1501 SCTP_FREE(asc, SCTP_M_ASC_IT);
1508 sctp_timeout_handler(void *t)
1510 struct sctp_inpcb *inp;
1511 struct sctp_tcb *stcb;
1512 struct sctp_nets *net;
1513 struct sctp_timer *tmr;
1514 struct mbuf *op_err;
1516 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1523 tmr = (struct sctp_timer *)t;
1524 inp = (struct sctp_inpcb *)tmr->ep;
1525 stcb = (struct sctp_tcb *)tmr->tcb;
1526 net = (struct sctp_nets *)tmr->net;
1527 CURVNET_SET((struct vnet *)tmr->vnet);
1530 #ifdef SCTP_AUDITING_ENABLED
1531 sctp_audit_log(0xF0, (uint8_t) tmr->type);
1532 sctp_auditing(3, inp, stcb, net);
1535 /* sanity checks... */
1536 if (tmr->self != (void *)tmr) {
1538 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1544 tmr->stopped_from = 0xa001;
1545 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1547 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1553 tmr->stopped_from = 0xa002;
1554 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1558 /* if this is an iterator timeout, get the struct and clear inp */
1559 tmr->stopped_from = 0xa003;
1561 SCTP_INP_INCR_REF(inp);
1562 if ((inp->sctp_socket == NULL) &&
1563 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1564 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1565 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1566 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1567 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1568 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1569 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1570 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1571 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1573 SCTP_INP_DECR_REF(inp);
1578 tmr->stopped_from = 0xa004;
1580 atomic_add_int(&stcb->asoc.refcnt, 1);
1581 if (stcb->asoc.state == 0) {
1582 atomic_add_int(&stcb->asoc.refcnt, -1);
1584 SCTP_INP_DECR_REF(inp);
1591 tmr->stopped_from = 0xa005;
1592 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type);
1593 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1595 SCTP_INP_DECR_REF(inp);
1598 atomic_add_int(&stcb->asoc.refcnt, -1);
1603 tmr->stopped_from = 0xa006;
1606 SCTP_TCB_LOCK(stcb);
1607 atomic_add_int(&stcb->asoc.refcnt, -1);
1608 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1609 ((stcb->asoc.state == 0) ||
1610 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1611 SCTP_TCB_UNLOCK(stcb);
1613 SCTP_INP_DECR_REF(inp);
1619 /* record in stopped what t-o occurred */
1620 tmr->stopped_from = type;
1622 /* mark as being serviced now */
1623 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1625 * Callout has been rescheduled.
1629 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1631 * Not active, so no action.
1635 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1637 /* call the handler for the appropriate timer type */
1639 case SCTP_TIMER_TYPE_ZERO_COPY:
1643 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1644 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1647 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1651 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1652 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1655 case SCTP_TIMER_TYPE_ADDR_WQ:
1656 sctp_handle_addr_wq();
1658 case SCTP_TIMER_TYPE_SEND:
1659 if ((stcb == NULL) || (inp == NULL)) {
1662 SCTP_STAT_INCR(sctps_timodata);
1663 stcb->asoc.timodata++;
1664 stcb->asoc.num_send_timers_up--;
1665 if (stcb->asoc.num_send_timers_up < 0) {
1666 stcb->asoc.num_send_timers_up = 0;
1668 SCTP_TCB_LOCK_ASSERT(stcb);
1669 if (sctp_t3rxt_timer(inp, stcb, net)) {
1670 /* no need to unlock on tcb its gone */
1674 SCTP_TCB_LOCK_ASSERT(stcb);
1675 #ifdef SCTP_AUDITING_ENABLED
1676 sctp_auditing(4, inp, stcb, net);
1678 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1679 if ((stcb->asoc.num_send_timers_up == 0) &&
1680 (stcb->asoc.sent_queue_cnt > 0)) {
1681 struct sctp_tmit_chunk *chk;
1684 * safeguard. If there on some on the sent queue
1685 * somewhere but no timers running something is
1686 * wrong... so we start a timer on the first chunk
1687 * on the send queue on whatever net it is sent to.
1689 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1690 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1694 case SCTP_TIMER_TYPE_INIT:
1695 if ((stcb == NULL) || (inp == NULL)) {
1698 SCTP_STAT_INCR(sctps_timoinit);
1699 stcb->asoc.timoinit++;
1700 if (sctp_t1init_timer(inp, stcb, net)) {
1701 /* no need to unlock on tcb its gone */
1704 /* We do output but not here */
1707 case SCTP_TIMER_TYPE_RECV:
1708 if ((stcb == NULL) || (inp == NULL)) {
1711 SCTP_STAT_INCR(sctps_timosack);
1712 stcb->asoc.timosack++;
1713 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1714 #ifdef SCTP_AUDITING_ENABLED
1715 sctp_auditing(4, inp, stcb, net);
1717 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1719 case SCTP_TIMER_TYPE_SHUTDOWN:
1720 if ((stcb == NULL) || (inp == NULL)) {
1723 if (sctp_shutdown_timer(inp, stcb, net)) {
1724 /* no need to unlock on tcb its gone */
1727 SCTP_STAT_INCR(sctps_timoshutdown);
1728 stcb->asoc.timoshutdown++;
1729 #ifdef SCTP_AUDITING_ENABLED
1730 sctp_auditing(4, inp, stcb, net);
1732 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1734 case SCTP_TIMER_TYPE_HEARTBEAT:
1735 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1738 SCTP_STAT_INCR(sctps_timoheartbeat);
1739 stcb->asoc.timoheartbeat++;
1740 if (sctp_heartbeat_timer(inp, stcb, net)) {
1741 /* no need to unlock on tcb its gone */
1744 #ifdef SCTP_AUDITING_ENABLED
1745 sctp_auditing(4, inp, stcb, net);
1747 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1748 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1749 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1752 case SCTP_TIMER_TYPE_COOKIE:
1753 if ((stcb == NULL) || (inp == NULL)) {
1756 if (sctp_cookie_timer(inp, stcb, net)) {
1757 /* no need to unlock on tcb its gone */
1760 SCTP_STAT_INCR(sctps_timocookie);
1761 stcb->asoc.timocookie++;
1762 #ifdef SCTP_AUDITING_ENABLED
1763 sctp_auditing(4, inp, stcb, net);
1766 * We consider T3 and Cookie timer pretty much the same with
1767 * respect to where from in chunk_output.
1769 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1771 case SCTP_TIMER_TYPE_NEWCOOKIE:
1779 SCTP_STAT_INCR(sctps_timosecret);
1780 (void)SCTP_GETTIME_TIMEVAL(&tv);
1781 SCTP_INP_WLOCK(inp);
1782 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1783 inp->sctp_ep.last_secret_number =
1784 inp->sctp_ep.current_secret_number;
1785 inp->sctp_ep.current_secret_number++;
1786 if (inp->sctp_ep.current_secret_number >=
1787 SCTP_HOW_MANY_SECRETS) {
1788 inp->sctp_ep.current_secret_number = 0;
1790 secret = (int)inp->sctp_ep.current_secret_number;
1791 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1792 inp->sctp_ep.secret_key[secret][i] =
1793 sctp_select_initial_TSN(&inp->sctp_ep);
1795 SCTP_INP_WUNLOCK(inp);
1796 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1800 case SCTP_TIMER_TYPE_PATHMTURAISE:
1801 if ((stcb == NULL) || (inp == NULL)) {
1804 SCTP_STAT_INCR(sctps_timopathmtu);
1805 sctp_pathmtu_timer(inp, stcb, net);
1808 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1809 if ((stcb == NULL) || (inp == NULL)) {
1812 if (sctp_shutdownack_timer(inp, stcb, net)) {
1813 /* no need to unlock on tcb its gone */
1816 SCTP_STAT_INCR(sctps_timoshutdownack);
1817 stcb->asoc.timoshutdownack++;
1818 #ifdef SCTP_AUDITING_ENABLED
1819 sctp_auditing(4, inp, stcb, net);
1821 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1823 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1824 if ((stcb == NULL) || (inp == NULL)) {
1827 SCTP_STAT_INCR(sctps_timoshutdownguard);
1828 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
1829 "Shutdown guard timer expired");
1830 sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
1831 /* no need to unlock on tcb its gone */
1834 case SCTP_TIMER_TYPE_STRRESET:
1835 if ((stcb == NULL) || (inp == NULL)) {
1838 if (sctp_strreset_timer(inp, stcb, net)) {
1839 /* no need to unlock on tcb its gone */
1842 SCTP_STAT_INCR(sctps_timostrmrst);
1843 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1845 case SCTP_TIMER_TYPE_ASCONF:
1846 if ((stcb == NULL) || (inp == NULL)) {
1849 if (sctp_asconf_timer(inp, stcb, net)) {
1850 /* no need to unlock on tcb its gone */
1853 SCTP_STAT_INCR(sctps_timoasconf);
1854 #ifdef SCTP_AUDITING_ENABLED
1855 sctp_auditing(4, inp, stcb, net);
1857 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1859 case SCTP_TIMER_TYPE_PRIM_DELETED:
1860 if ((stcb == NULL) || (inp == NULL)) {
1863 sctp_delete_prim_timer(inp, stcb, net);
1864 SCTP_STAT_INCR(sctps_timodelprim);
1867 case SCTP_TIMER_TYPE_AUTOCLOSE:
1868 if ((stcb == NULL) || (inp == NULL)) {
1871 SCTP_STAT_INCR(sctps_timoautoclose);
1872 sctp_autoclose_timer(inp, stcb, net);
1873 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1876 case SCTP_TIMER_TYPE_ASOCKILL:
1877 if ((stcb == NULL) || (inp == NULL)) {
1880 SCTP_STAT_INCR(sctps_timoassockill);
1881 /* Can we free it yet? */
1882 SCTP_INP_DECR_REF(inp);
1883 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
1884 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1885 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1886 so = SCTP_INP_SO(inp);
1887 atomic_add_int(&stcb->asoc.refcnt, 1);
1888 SCTP_TCB_UNLOCK(stcb);
1889 SCTP_SOCKET_LOCK(so, 1);
1890 SCTP_TCB_LOCK(stcb);
1891 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1893 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
1894 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1895 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1896 SCTP_SOCKET_UNLOCK(so, 1);
1899 * free asoc, always unlocks (or destroy's) so prevent
1900 * duplicate unlock or unlock of a free mtx :-0
1904 case SCTP_TIMER_TYPE_INPKILL:
1905 SCTP_STAT_INCR(sctps_timoinpkill);
1910 * special case, take away our increment since WE are the
1913 SCTP_INP_DECR_REF(inp);
1914 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
1915 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1916 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1917 SCTP_CALLED_FROM_INPKILL_TIMER);
1921 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1925 #ifdef SCTP_AUDITING_ENABLED
1926 sctp_audit_log(0xF1, (uint8_t) type);
1928 sctp_auditing(5, inp, stcb, net);
1930 if ((did_output) && stcb) {
1932 * Now we need to clean up the control chunk chain if an
1933 * ECNE is on it. It must be marked as UNSENT again so next
1934 * call will continue to send it until such time that we get
1935 * a CWR, to remove it. It is, however, less likely that we
1936 * will find a ecn echo on the chain though.
1938 sctp_fix_ecn_echo(&stcb->asoc);
1942 SCTP_TCB_UNLOCK(stcb);
1946 SCTP_INP_DECR_REF(inp);
1949 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type);
1954 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1955 struct sctp_nets *net)
1958 struct sctp_timer *tmr;
1960 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1965 SCTP_TCB_LOCK_ASSERT(stcb);
1968 case SCTP_TIMER_TYPE_ZERO_COPY:
1969 tmr = &inp->sctp_ep.zero_copy_timer;
1970 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1972 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1973 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1974 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1976 case SCTP_TIMER_TYPE_ADDR_WQ:
1977 /* Only 1 tick away :-) */
1978 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1979 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1981 case SCTP_TIMER_TYPE_SEND:
1982 /* Here we use the RTO timer */
1986 if ((stcb == NULL) || (net == NULL)) {
1989 tmr = &net->rxt_timer;
1990 if (net->RTO == 0) {
1991 rto_val = stcb->asoc.initial_rto;
1995 to_ticks = MSEC_TO_TICKS(rto_val);
1998 case SCTP_TIMER_TYPE_INIT:
2000 * Here we use the INIT timer default usually about 1
2003 if ((stcb == NULL) || (net == NULL)) {
2006 tmr = &net->rxt_timer;
2007 if (net->RTO == 0) {
2008 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2010 to_ticks = MSEC_TO_TICKS(net->RTO);
2013 case SCTP_TIMER_TYPE_RECV:
2015 * Here we use the Delayed-Ack timer value from the inp
2016 * ususually about 200ms.
2021 tmr = &stcb->asoc.dack_timer;
2022 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
2024 case SCTP_TIMER_TYPE_SHUTDOWN:
2025 /* Here we use the RTO of the destination. */
2026 if ((stcb == NULL) || (net == NULL)) {
2029 if (net->RTO == 0) {
2030 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2032 to_ticks = MSEC_TO_TICKS(net->RTO);
2034 tmr = &net->rxt_timer;
2036 case SCTP_TIMER_TYPE_HEARTBEAT:
2038 * the net is used here so that we can add in the RTO. Even
2039 * though we use a different timer. We also add the HB timer
2040 * PLUS a random jitter.
2042 if ((stcb == NULL) || (net == NULL)) {
2048 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2049 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2052 if (net->RTO == 0) {
2053 to_ticks = stcb->asoc.initial_rto;
2055 to_ticks = net->RTO;
2057 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2058 jitter = rndval % to_ticks;
2059 if (jitter >= (to_ticks >> 1)) {
2060 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
2062 to_ticks = to_ticks - jitter;
2064 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2065 !(net->dest_state & SCTP_ADDR_PF)) {
2066 to_ticks += net->heart_beat_delay;
2069 * Now we must convert the to_ticks that are now in
2072 to_ticks = MSEC_TO_TICKS(to_ticks);
2073 tmr = &net->hb_timer;
2076 case SCTP_TIMER_TYPE_COOKIE:
2078 * Here we can use the RTO timer from the network since one
2079 * RTT was compelete. If a retran happened then we will be
2080 * using the RTO initial value.
2082 if ((stcb == NULL) || (net == NULL)) {
2085 if (net->RTO == 0) {
2086 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2088 to_ticks = MSEC_TO_TICKS(net->RTO);
2090 tmr = &net->rxt_timer;
2092 case SCTP_TIMER_TYPE_NEWCOOKIE:
2094 * nothing needed but the endpoint here ususually about 60
2097 tmr = &inp->sctp_ep.signature_change;
2098 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2100 case SCTP_TIMER_TYPE_ASOCKILL:
2104 tmr = &stcb->asoc.strreset_timer;
2105 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2107 case SCTP_TIMER_TYPE_INPKILL:
2109 * The inp is setup to die. We re-use the signature_chage
2110 * timer since that has stopped and we are in the GONE
2113 tmr = &inp->sctp_ep.signature_change;
2114 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2116 case SCTP_TIMER_TYPE_PATHMTURAISE:
2118 * Here we use the value found in the EP for PMTU ususually
2121 if ((stcb == NULL) || (net == NULL)) {
2124 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2127 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2128 tmr = &net->pmtu_timer;
2130 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2131 /* Here we use the RTO of the destination */
2132 if ((stcb == NULL) || (net == NULL)) {
2135 if (net->RTO == 0) {
2136 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2138 to_ticks = MSEC_TO_TICKS(net->RTO);
2140 tmr = &net->rxt_timer;
2142 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2144 * Here we use the endpoints shutdown guard timer usually
2150 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2151 to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto);
2153 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2155 tmr = &stcb->asoc.shut_guard_timer;
2157 case SCTP_TIMER_TYPE_STRRESET:
2159 * Here the timer comes from the stcb but its value is from
2162 if ((stcb == NULL) || (net == NULL)) {
2165 if (net->RTO == 0) {
2166 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2168 to_ticks = MSEC_TO_TICKS(net->RTO);
2170 tmr = &stcb->asoc.strreset_timer;
2172 case SCTP_TIMER_TYPE_ASCONF:
2174 * Here the timer comes from the stcb but its value is from
2177 if ((stcb == NULL) || (net == NULL)) {
2180 if (net->RTO == 0) {
2181 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2183 to_ticks = MSEC_TO_TICKS(net->RTO);
2185 tmr = &stcb->asoc.asconf_timer;
2187 case SCTP_TIMER_TYPE_PRIM_DELETED:
2188 if ((stcb == NULL) || (net != NULL)) {
2191 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2192 tmr = &stcb->asoc.delete_prim_timer;
2194 case SCTP_TIMER_TYPE_AUTOCLOSE:
2198 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2200 * Really an error since stcb is NOT set to
2205 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2206 tmr = &stcb->asoc.autoclose_timer;
2209 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2214 if ((to_ticks <= 0) || (tmr == NULL)) {
2215 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2216 __func__, t_type, to_ticks, (void *)tmr);
2219 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2221 * we do NOT allow you to have it already running. if it is
2222 * we leave the current one up unchanged
2226 /* At this point we can proceed */
2227 if (t_type == SCTP_TIMER_TYPE_SEND) {
2228 stcb->asoc.num_send_timers_up++;
2230 tmr->stopped_from = 0;
2232 tmr->ep = (void *)inp;
2233 tmr->tcb = (void *)stcb;
2234 tmr->net = (void *)net;
2235 tmr->self = (void *)tmr;
2236 tmr->vnet = (void *)curvnet;
2237 tmr->ticks = sctp_get_tick_count();
2238 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2243 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2244 struct sctp_nets *net, uint32_t from)
2246 struct sctp_timer *tmr;
2248 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2254 SCTP_TCB_LOCK_ASSERT(stcb);
2257 case SCTP_TIMER_TYPE_ZERO_COPY:
2258 tmr = &inp->sctp_ep.zero_copy_timer;
2260 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2261 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2263 case SCTP_TIMER_TYPE_ADDR_WQ:
2264 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2266 case SCTP_TIMER_TYPE_SEND:
2267 if ((stcb == NULL) || (net == NULL)) {
2270 tmr = &net->rxt_timer;
2272 case SCTP_TIMER_TYPE_INIT:
2273 if ((stcb == NULL) || (net == NULL)) {
2276 tmr = &net->rxt_timer;
2278 case SCTP_TIMER_TYPE_RECV:
2282 tmr = &stcb->asoc.dack_timer;
2284 case SCTP_TIMER_TYPE_SHUTDOWN:
2285 if ((stcb == NULL) || (net == NULL)) {
2288 tmr = &net->rxt_timer;
2290 case SCTP_TIMER_TYPE_HEARTBEAT:
2291 if ((stcb == NULL) || (net == NULL)) {
2294 tmr = &net->hb_timer;
2296 case SCTP_TIMER_TYPE_COOKIE:
2297 if ((stcb == NULL) || (net == NULL)) {
2300 tmr = &net->rxt_timer;
2302 case SCTP_TIMER_TYPE_NEWCOOKIE:
2303 /* nothing needed but the endpoint here */
2304 tmr = &inp->sctp_ep.signature_change;
2306 * We re-use the newcookie timer for the INP kill timer. We
2307 * must assure that we do not kill it by accident.
2310 case SCTP_TIMER_TYPE_ASOCKILL:
2312 * Stop the asoc kill timer.
2317 tmr = &stcb->asoc.strreset_timer;
2320 case SCTP_TIMER_TYPE_INPKILL:
2322 * The inp is setup to die. We re-use the signature_chage
2323 * timer since that has stopped and we are in the GONE
2326 tmr = &inp->sctp_ep.signature_change;
2328 case SCTP_TIMER_TYPE_PATHMTURAISE:
2329 if ((stcb == NULL) || (net == NULL)) {
2332 tmr = &net->pmtu_timer;
2334 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2335 if ((stcb == NULL) || (net == NULL)) {
2338 tmr = &net->rxt_timer;
2340 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2344 tmr = &stcb->asoc.shut_guard_timer;
2346 case SCTP_TIMER_TYPE_STRRESET:
2350 tmr = &stcb->asoc.strreset_timer;
2352 case SCTP_TIMER_TYPE_ASCONF:
2356 tmr = &stcb->asoc.asconf_timer;
2358 case SCTP_TIMER_TYPE_PRIM_DELETED:
2362 tmr = &stcb->asoc.delete_prim_timer;
2364 case SCTP_TIMER_TYPE_AUTOCLOSE:
2368 tmr = &stcb->asoc.autoclose_timer;
2371 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2378 if ((tmr->type != t_type) && tmr->type) {
2380 * Ok we have a timer that is under joint use. Cookie timer
2381 * per chance with the SEND timer. We therefore are NOT
2382 * running the timer that the caller wants stopped. So just
2387 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2388 stcb->asoc.num_send_timers_up--;
2389 if (stcb->asoc.num_send_timers_up < 0) {
2390 stcb->asoc.num_send_timers_up = 0;
2394 tmr->stopped_from = from;
2395 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2400 sctp_calculate_len(struct mbuf *m)
2407 tlen += SCTP_BUF_LEN(at);
2408 at = SCTP_BUF_NEXT(at);
2414 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2415 struct sctp_association *asoc, uint32_t mtu)
2418 * Reset the P-MTU size on this association, this involves changing
2419 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2420 * allow the DF flag to be cleared.
2422 struct sctp_tmit_chunk *chk;
2423 unsigned int eff_mtu, ovh;
2425 asoc->smallest_mtu = mtu;
2426 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2427 ovh = SCTP_MIN_OVERHEAD;
2429 ovh = SCTP_MIN_V4_OVERHEAD;
2431 eff_mtu = mtu - ovh;
2432 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2433 if (chk->send_size > eff_mtu) {
2434 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2437 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2438 if (chk->send_size > eff_mtu) {
2439 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2446 * given an association and starting time of the current RTT period return
2447 * RTO in number of msecs net should point to the current network
2451 sctp_calculate_rto(struct sctp_tcb *stcb,
2452 struct sctp_association *asoc,
2453 struct sctp_nets *net,
2454 struct timeval *told,
2455 int safe, int rtt_from_sack)
2458 * given an association and the starting time of the current RTT
2459 * period (in value1/value2) return RTO in number of msecs.
2461 int32_t rtt; /* RTT in ms */
2463 int first_measure = 0;
2464 struct timeval now, then, *old;
2466 /* Copy it out for sparc64 */
2467 if (safe == sctp_align_unsafe_makecopy) {
2469 memcpy(&then, told, sizeof(struct timeval));
2470 } else if (safe == sctp_align_safe_nocopy) {
2474 SCTP_PRINTF("Huh, bad rto calc call\n");
2477 /************************/
2478 /* 1. calculate new RTT */
2479 /************************/
2480 /* get the current time */
2481 if (stcb->asoc.use_precise_time) {
2482 (void)SCTP_GETPTIME_TIMEVAL(&now);
2484 (void)SCTP_GETTIME_TIMEVAL(&now);
2486 timevalsub(&now, old);
2487 /* store the current RTT in us */
2488 net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec +
2489 (uint64_t) now.tv_usec;
2491 /* compute rtt in ms */
2492 rtt = (int32_t) (net->rtt / 1000);
2493 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2495 * Tell the CC module that a new update has just occurred
2498 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2501 * Do we need to determine the lan? We do this only on sacks i.e.
2502 * RTT being determined from data not non-data (HB/INIT->INITACK).
2504 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2505 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2506 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2507 net->lan_type = SCTP_LAN_INTERNET;
2509 net->lan_type = SCTP_LAN_LOCAL;
2512 /***************************/
2513 /* 2. update RTTVAR & SRTT */
2514 /***************************/
2516 * Compute the scaled average lastsa and the
2517 * scaled variance lastsv as described in van Jacobson
2518 * Paper "Congestion Avoidance and Control", Annex A.
2520 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2521 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2523 if (net->RTO_measured) {
2524 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2529 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2531 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2532 rto_logging(net, SCTP_LOG_RTTVAR);
2535 /* First RTO measurment */
2536 net->RTO_measured = 1;
2538 net->lastsa = rtt << SCTP_RTT_SHIFT;
2539 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2540 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2541 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2544 if (net->lastsv == 0) {
2545 net->lastsv = SCTP_CLOCK_GRANULARITY;
2547 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2548 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2549 (stcb->asoc.sat_network_lockout == 0)) {
2550 stcb->asoc.sat_network = 1;
2551 } else if ((!first_measure) && stcb->asoc.sat_network) {
2552 stcb->asoc.sat_network = 0;
2553 stcb->asoc.sat_network_lockout = 1;
2555 /* bound it, per C6/C7 in Section 5.3.1 */
2556 if (new_rto < stcb->asoc.minrto) {
2557 new_rto = stcb->asoc.minrto;
2559 if (new_rto > stcb->asoc.maxrto) {
2560 new_rto = stcb->asoc.maxrto;
2562 /* we are now returning the RTO */
2567 * return a pointer to a contiguous piece of data from the given mbuf chain
2568 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2569 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2570 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2573 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
2579 if ((off < 0) || (len <= 0))
2582 /* find the desired start location */
2583 while ((m != NULL) && (off > 0)) {
2584 if (off < SCTP_BUF_LEN(m))
2586 off -= SCTP_BUF_LEN(m);
2587 m = SCTP_BUF_NEXT(m);
2592 /* is the current mbuf large enough (eg. contiguous)? */
2593 if ((SCTP_BUF_LEN(m) - off) >= len) {
2594 return (mtod(m, caddr_t)+off);
2596 /* else, it spans more than one mbuf, so save a temp copy... */
2597 while ((m != NULL) && (len > 0)) {
2598 count = min(SCTP_BUF_LEN(m) - off, len);
2599 bcopy(mtod(m, caddr_t)+off, ptr, count);
2603 m = SCTP_BUF_NEXT(m);
2605 if ((m == NULL) && (len > 0))
2608 return ((caddr_t)in_ptr);
2614 struct sctp_paramhdr *
2615 sctp_get_next_param(struct mbuf *m,
2617 struct sctp_paramhdr *pull,
2620 /* This just provides a typed signature to Peter's Pull routine */
2621 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2627 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2629 struct mbuf *m_last;
2635 if (padlen <= M_TRAILINGSPACE(m)) {
2637 * The easy way. We hope the majority of the time we hit
2642 /* Hard way we must grow the mbuf chain */
2643 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2644 if (m_last == NULL) {
2647 SCTP_BUF_LEN(m_last) = 0;
2648 SCTP_BUF_NEXT(m_last) = NULL;
2649 SCTP_BUF_NEXT(m) = m_last;
2651 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2652 SCTP_BUF_LEN(m_last) += padlen;
2653 memset(dp, 0, padlen);
2658 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2660 /* find the last mbuf in chain and pad it */
2663 if (last_mbuf != NULL) {
2664 return (sctp_add_pad_tombuf(last_mbuf, padval));
2666 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2667 if (SCTP_BUF_NEXT(m_at) == NULL) {
2668 return (sctp_add_pad_tombuf(m_at, padval));
2676 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2677 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2678 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2683 struct mbuf *m_notify;
2684 struct sctp_assoc_change *sac;
2685 struct sctp_queued_to_read *control;
2686 unsigned int notif_len;
2690 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2698 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2699 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2700 if (abort != NULL) {
2701 abort_len = ntohs(abort->ch.chunk_length);
2705 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2706 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2707 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2708 notif_len += abort_len;
2710 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2711 if (m_notify == NULL) {
2712 /* Retry with smaller value. */
2713 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2714 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2715 if (m_notify == NULL) {
2719 SCTP_BUF_NEXT(m_notify) = NULL;
2720 sac = mtod(m_notify, struct sctp_assoc_change *);
2721 memset(sac, 0, notif_len);
2722 sac->sac_type = SCTP_ASSOC_CHANGE;
2724 sac->sac_length = sizeof(struct sctp_assoc_change);
2725 sac->sac_state = state;
2726 sac->sac_error = error;
2727 /* XXX verify these stream counts */
2728 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2729 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2730 sac->sac_assoc_id = sctp_get_associd(stcb);
2731 if (notif_len > sizeof(struct sctp_assoc_change)) {
2732 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2734 if (stcb->asoc.prsctp_supported == 1) {
2735 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2737 if (stcb->asoc.auth_supported == 1) {
2738 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2740 if (stcb->asoc.asconf_supported == 1) {
2741 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2743 if (stcb->asoc.idata_supported == 1) {
2744 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
2746 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2747 if (stcb->asoc.reconfig_supported == 1) {
2748 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2750 sac->sac_length += i;
2751 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2752 memcpy(sac->sac_info, abort, abort_len);
2753 sac->sac_length += abort_len;
2756 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2757 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2758 0, 0, stcb->asoc.context, 0, 0, 0,
2760 if (control != NULL) {
2761 control->length = SCTP_BUF_LEN(m_notify);
2762 /* not that we need this */
2763 control->tail_mbuf = m_notify;
2764 control->spec_flags = M_NOTIFICATION;
2765 sctp_add_to_readq(stcb->sctp_ep, stcb,
2767 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2770 sctp_m_freem(m_notify);
2774 * For 1-to-1 style sockets, we send up and error when an ABORT
2778 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2779 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2780 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2781 SOCK_LOCK(stcb->sctp_socket);
2783 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2784 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2785 stcb->sctp_socket->so_error = ECONNREFUSED;
2787 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2788 stcb->sctp_socket->so_error = ECONNRESET;
2791 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2792 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2793 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2794 stcb->sctp_socket->so_error = ETIMEDOUT;
2796 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2797 stcb->sctp_socket->so_error = ECONNABORTED;
2801 /* Wake ANY sleepers */
2802 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2803 so = SCTP_INP_SO(stcb->sctp_ep);
2805 atomic_add_int(&stcb->asoc.refcnt, 1);
2806 SCTP_TCB_UNLOCK(stcb);
2807 SCTP_SOCKET_LOCK(so, 1);
2808 SCTP_TCB_LOCK(stcb);
2809 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2810 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2811 SCTP_SOCKET_UNLOCK(so, 1);
2816 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2817 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2818 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2819 socantrcvmore_locked(stcb->sctp_socket);
2821 sorwakeup(stcb->sctp_socket);
2822 sowwakeup(stcb->sctp_socket);
2823 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2825 SCTP_SOCKET_UNLOCK(so, 1);
2831 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2832 struct sockaddr *sa, uint32_t error, int so_locked
2833 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2838 struct mbuf *m_notify;
2839 struct sctp_paddr_change *spc;
2840 struct sctp_queued_to_read *control;
2842 if ((stcb == NULL) ||
2843 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2844 /* event not enabled */
2847 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2848 if (m_notify == NULL)
2850 SCTP_BUF_LEN(m_notify) = 0;
2851 spc = mtod(m_notify, struct sctp_paddr_change *);
2852 memset(spc, 0, sizeof(struct sctp_paddr_change));
2853 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2855 spc->spc_length = sizeof(struct sctp_paddr_change);
2856 switch (sa->sa_family) {
2860 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
2861 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
2862 (struct sockaddr_in6 *)&spc->spc_aaddr);
2864 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2867 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2874 struct sockaddr_in6 *sin6;
2876 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2878 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2879 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2880 if (sin6->sin6_scope_id == 0) {
2881 /* recover scope_id for user */
2882 (void)sa6_recoverscope(sin6);
2884 /* clear embedded scope_id for user */
2885 in6_clearscope(&sin6->sin6_addr);
2895 spc->spc_state = state;
2896 spc->spc_error = error;
2897 spc->spc_assoc_id = sctp_get_associd(stcb);
2899 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2900 SCTP_BUF_NEXT(m_notify) = NULL;
2902 /* append to socket */
2903 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2904 0, 0, stcb->asoc.context, 0, 0, 0,
2906 if (control == NULL) {
2908 sctp_m_freem(m_notify);
2911 control->length = SCTP_BUF_LEN(m_notify);
2912 control->spec_flags = M_NOTIFICATION;
2913 /* not that we need this */
2914 control->tail_mbuf = m_notify;
2915 sctp_add_to_readq(stcb->sctp_ep, stcb,
2917 &stcb->sctp_socket->so_rcv, 1,
2918 SCTP_READ_LOCK_NOT_HELD,
2924 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2925 struct sctp_tmit_chunk *chk, int so_locked
2926 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2931 struct mbuf *m_notify;
2932 struct sctp_send_failed *ssf;
2933 struct sctp_send_failed_event *ssfe;
2934 struct sctp_queued_to_read *control;
2937 if ((stcb == NULL) ||
2938 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2939 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2940 /* event not enabled */
2943 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2944 length = sizeof(struct sctp_send_failed_event);
2946 length = sizeof(struct sctp_send_failed);
2948 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2949 if (m_notify == NULL)
2952 SCTP_BUF_LEN(m_notify) = 0;
2953 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2954 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2955 memset(ssfe, 0, length);
2956 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2958 ssfe->ssfe_flags = SCTP_DATA_SENT;
2960 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2962 length += chk->send_size;
2963 length -= sizeof(struct sctp_data_chunk);
2964 ssfe->ssfe_length = length;
2965 ssfe->ssfe_error = error;
2966 /* not exactly what the user sent in, but should be close :) */
2967 ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number;
2968 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2969 ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype;
2970 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2971 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2972 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2973 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2975 ssf = mtod(m_notify, struct sctp_send_failed *);
2976 memset(ssf, 0, length);
2977 ssf->ssf_type = SCTP_SEND_FAILED;
2979 ssf->ssf_flags = SCTP_DATA_SENT;
2981 ssf->ssf_flags = SCTP_DATA_UNSENT;
2983 length += chk->send_size;
2984 length -= sizeof(struct sctp_data_chunk);
2985 ssf->ssf_length = length;
2986 ssf->ssf_error = error;
2987 /* not exactly what the user sent in, but should be close :) */
2988 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2989 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2990 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2991 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2992 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2993 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2994 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2995 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2996 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
3000 * trim off the sctp chunk header(it should be there)
3002 if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
3003 m_adj(chk->data, sizeof(struct sctp_data_chunk));
3004 sctp_mbuf_crush(chk->data);
3005 chk->send_size -= sizeof(struct sctp_data_chunk);
3008 SCTP_BUF_NEXT(m_notify) = chk->data;
3009 /* Steal off the mbuf */
3012 * For this case, we check the actual socket buffer, since the assoc
3013 * is going away we don't want to overfill the socket buffer for a
3016 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3017 sctp_m_freem(m_notify);
3020 /* append to socket */
3021 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3022 0, 0, stcb->asoc.context, 0, 0, 0,
3024 if (control == NULL) {
3026 sctp_m_freem(m_notify);
3029 control->spec_flags = M_NOTIFICATION;
3030 sctp_add_to_readq(stcb->sctp_ep, stcb,
3032 &stcb->sctp_socket->so_rcv, 1,
3033 SCTP_READ_LOCK_NOT_HELD,
3039 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3040 struct sctp_stream_queue_pending *sp, int so_locked
3041 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3046 struct mbuf *m_notify;
3047 struct sctp_send_failed *ssf;
3048 struct sctp_send_failed_event *ssfe;
3049 struct sctp_queued_to_read *control;
3052 if ((stcb == NULL) ||
3053 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3054 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3055 /* event not enabled */
3058 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3059 length = sizeof(struct sctp_send_failed_event);
3061 length = sizeof(struct sctp_send_failed);
3063 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
3064 if (m_notify == NULL) {
3068 SCTP_BUF_LEN(m_notify) = 0;
3069 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3070 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3071 memset(ssfe, 0, length);
3072 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3073 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3074 length += sp->length;
3075 ssfe->ssfe_length = length;
3076 ssfe->ssfe_error = error;
3077 /* not exactly what the user sent in, but should be close :) */
3078 ssfe->ssfe_info.snd_sid = sp->stream;
3079 if (sp->some_taken) {
3080 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3082 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3084 ssfe->ssfe_info.snd_ppid = sp->ppid;
3085 ssfe->ssfe_info.snd_context = sp->context;
3086 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3087 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3088 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
3090 ssf = mtod(m_notify, struct sctp_send_failed *);
3091 memset(ssf, 0, length);
3092 ssf->ssf_type = SCTP_SEND_FAILED;
3093 ssf->ssf_flags = SCTP_DATA_UNSENT;
3094 length += sp->length;
3095 ssf->ssf_length = length;
3096 ssf->ssf_error = error;
3097 /* not exactly what the user sent in, but should be close :) */
3098 ssf->ssf_info.sinfo_stream = sp->stream;
3099 ssf->ssf_info.sinfo_ssn = 0;
3100 if (sp->some_taken) {
3101 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3103 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3105 ssf->ssf_info.sinfo_ppid = sp->ppid;
3106 ssf->ssf_info.sinfo_context = sp->context;
3107 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3108 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3109 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
3111 SCTP_BUF_NEXT(m_notify) = sp->data;
3113 /* Steal off the mbuf */
3116 * For this case, we check the actual socket buffer, since the assoc
3117 * is going away we don't want to overfill the socket buffer for a
3120 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3121 sctp_m_freem(m_notify);
3124 /* append to socket */
3125 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3126 0, 0, stcb->asoc.context, 0, 0, 0,
3128 if (control == NULL) {
3130 sctp_m_freem(m_notify);
3133 control->spec_flags = M_NOTIFICATION;
3134 sctp_add_to_readq(stcb->sctp_ep, stcb,
3136 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3142 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3144 struct mbuf *m_notify;
3145 struct sctp_adaptation_event *sai;
3146 struct sctp_queued_to_read *control;
3148 if ((stcb == NULL) ||
3149 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3150 /* event not enabled */
3153 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3154 if (m_notify == NULL)
3157 SCTP_BUF_LEN(m_notify) = 0;
3158 sai = mtod(m_notify, struct sctp_adaptation_event *);
3159 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3160 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3162 sai->sai_length = sizeof(struct sctp_adaptation_event);
3163 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3164 sai->sai_assoc_id = sctp_get_associd(stcb);
3166 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3167 SCTP_BUF_NEXT(m_notify) = NULL;
3169 /* append to socket */
3170 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3171 0, 0, stcb->asoc.context, 0, 0, 0,
3173 if (control == NULL) {
3175 sctp_m_freem(m_notify);
3178 control->length = SCTP_BUF_LEN(m_notify);
3179 control->spec_flags = M_NOTIFICATION;
3180 /* not that we need this */
3181 control->tail_mbuf = m_notify;
3182 sctp_add_to_readq(stcb->sctp_ep, stcb,
3184 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3187 /* This always must be called with the read-queue LOCKED in the INP */
3189 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3190 uint32_t val, int so_locked
3191 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3196 struct mbuf *m_notify;
3197 struct sctp_pdapi_event *pdapi;
3198 struct sctp_queued_to_read *control;
3201 if ((stcb == NULL) ||
3202 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3203 /* event not enabled */
3206 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3209 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3210 if (m_notify == NULL)
3213 SCTP_BUF_LEN(m_notify) = 0;
3214 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3215 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3216 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3217 pdapi->pdapi_flags = 0;
3218 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3219 pdapi->pdapi_indication = error;
3220 pdapi->pdapi_stream = (val >> 16);
3221 pdapi->pdapi_seq = (val & 0x0000ffff);
3222 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3224 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3225 SCTP_BUF_NEXT(m_notify) = NULL;
3226 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3227 0, 0, stcb->asoc.context, 0, 0, 0,
3229 if (control == NULL) {
3231 sctp_m_freem(m_notify);
3234 control->spec_flags = M_NOTIFICATION;
3235 control->length = SCTP_BUF_LEN(m_notify);
3236 /* not that we need this */
3237 control->tail_mbuf = m_notify;
3238 control->held_length = 0;
3239 control->length = 0;
3240 sb = &stcb->sctp_socket->so_rcv;
3241 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3242 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3244 sctp_sballoc(stcb, sb, m_notify);
3245 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3246 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3248 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3249 control->end_added = 1;
3250 if (stcb->asoc.control_pdapi)
3251 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3253 /* we really should not see this case */
3254 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3256 if (stcb->sctp_ep && stcb->sctp_socket) {
3257 /* This should always be the case */
3258 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3261 so = SCTP_INP_SO(stcb->sctp_ep);
3263 atomic_add_int(&stcb->asoc.refcnt, 1);
3264 SCTP_TCB_UNLOCK(stcb);
3265 SCTP_SOCKET_LOCK(so, 1);
3266 SCTP_TCB_LOCK(stcb);
3267 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3268 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3269 SCTP_SOCKET_UNLOCK(so, 1);
3274 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3275 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3277 SCTP_SOCKET_UNLOCK(so, 1);
3284 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3286 struct mbuf *m_notify;
3287 struct sctp_shutdown_event *sse;
3288 struct sctp_queued_to_read *control;
3291 * For TCP model AND UDP connected sockets we will send an error up
3292 * when an SHUTDOWN completes
3294 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3295 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3296 /* mark socket closed for read/write and wakeup! */
3297 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3300 so = SCTP_INP_SO(stcb->sctp_ep);
3301 atomic_add_int(&stcb->asoc.refcnt, 1);
3302 SCTP_TCB_UNLOCK(stcb);
3303 SCTP_SOCKET_LOCK(so, 1);
3304 SCTP_TCB_LOCK(stcb);
3305 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3306 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3307 SCTP_SOCKET_UNLOCK(so, 1);
3311 socantsendmore(stcb->sctp_socket);
3312 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3313 SCTP_SOCKET_UNLOCK(so, 1);
3316 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3317 /* event not enabled */
3320 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3321 if (m_notify == NULL)
3324 sse = mtod(m_notify, struct sctp_shutdown_event *);
3325 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3326 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3328 sse->sse_length = sizeof(struct sctp_shutdown_event);
3329 sse->sse_assoc_id = sctp_get_associd(stcb);
3331 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3332 SCTP_BUF_NEXT(m_notify) = NULL;
3334 /* append to socket */
3335 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3336 0, 0, stcb->asoc.context, 0, 0, 0,
3338 if (control == NULL) {
3340 sctp_m_freem(m_notify);
3343 control->spec_flags = M_NOTIFICATION;
3344 control->length = SCTP_BUF_LEN(m_notify);
3345 /* not that we need this */
3346 control->tail_mbuf = m_notify;
3347 sctp_add_to_readq(stcb->sctp_ep, stcb,
3349 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3353 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3355 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3360 struct mbuf *m_notify;
3361 struct sctp_sender_dry_event *event;
3362 struct sctp_queued_to_read *control;
3364 if ((stcb == NULL) ||
3365 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3366 /* event not enabled */
3369 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3370 if (m_notify == NULL) {
3374 SCTP_BUF_LEN(m_notify) = 0;
3375 event = mtod(m_notify, struct sctp_sender_dry_event *);
3376 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3377 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3378 event->sender_dry_flags = 0;
3379 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3380 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3382 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3383 SCTP_BUF_NEXT(m_notify) = NULL;
3385 /* append to socket */
3386 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3387 0, 0, stcb->asoc.context, 0, 0, 0,
3389 if (control == NULL) {
3391 sctp_m_freem(m_notify);
3394 control->length = SCTP_BUF_LEN(m_notify);
3395 control->spec_flags = M_NOTIFICATION;
3396 /* not that we need this */
3397 control->tail_mbuf = m_notify;
3398 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3399 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3404 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3406 struct mbuf *m_notify;
3407 struct sctp_queued_to_read *control;
3408 struct sctp_stream_change_event *stradd;
3410 if ((stcb == NULL) ||
3411 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3412 /* event not enabled */
3415 if ((stcb->asoc.peer_req_out) && flag) {
3416 /* Peer made the request, don't tell the local user */
3417 stcb->asoc.peer_req_out = 0;
3420 stcb->asoc.peer_req_out = 0;
3421 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3422 if (m_notify == NULL)
3425 SCTP_BUF_LEN(m_notify) = 0;
3426 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3427 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3428 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3429 stradd->strchange_flags = flag;
3430 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3431 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3432 stradd->strchange_instrms = numberin;
3433 stradd->strchange_outstrms = numberout;
3434 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3435 SCTP_BUF_NEXT(m_notify) = NULL;
3436 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3438 sctp_m_freem(m_notify);
3441 /* append to socket */
3442 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3443 0, 0, stcb->asoc.context, 0, 0, 0,
3445 if (control == NULL) {
3447 sctp_m_freem(m_notify);
3450 control->spec_flags = M_NOTIFICATION;
3451 control->length = SCTP_BUF_LEN(m_notify);
3452 /* not that we need this */
3453 control->tail_mbuf = m_notify;
3454 sctp_add_to_readq(stcb->sctp_ep, stcb,
3456 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3460 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3462 struct mbuf *m_notify;
3463 struct sctp_queued_to_read *control;
3464 struct sctp_assoc_reset_event *strasoc;
3466 if ((stcb == NULL) ||
3467 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3468 /* event not enabled */
3471 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3472 if (m_notify == NULL)
3475 SCTP_BUF_LEN(m_notify) = 0;
3476 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3477 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3478 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3479 strasoc->assocreset_flags = flag;
3480 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3481 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3482 strasoc->assocreset_local_tsn = sending_tsn;
3483 strasoc->assocreset_remote_tsn = recv_tsn;
3484 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3485 SCTP_BUF_NEXT(m_notify) = NULL;
3486 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3488 sctp_m_freem(m_notify);
3491 /* append to socket */
3492 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3493 0, 0, stcb->asoc.context, 0, 0, 0,
3495 if (control == NULL) {
3497 sctp_m_freem(m_notify);
3500 control->spec_flags = M_NOTIFICATION;
3501 control->length = SCTP_BUF_LEN(m_notify);
3502 /* not that we need this */
3503 control->tail_mbuf = m_notify;
3504 sctp_add_to_readq(stcb->sctp_ep, stcb,
3506 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3512 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3513 int number_entries, uint16_t * list, int flag)
3515 struct mbuf *m_notify;
3516 struct sctp_queued_to_read *control;
3517 struct sctp_stream_reset_event *strreset;
3520 if ((stcb == NULL) ||
3521 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3522 /* event not enabled */
3525 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3526 if (m_notify == NULL)
3529 SCTP_BUF_LEN(m_notify) = 0;
3530 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3531 if (len > M_TRAILINGSPACE(m_notify)) {
3532 /* never enough room */
3533 sctp_m_freem(m_notify);
3536 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3537 memset(strreset, 0, len);
3538 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3539 strreset->strreset_flags = flag;
3540 strreset->strreset_length = len;
3541 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3542 if (number_entries) {
3545 for (i = 0; i < number_entries; i++) {
3546 strreset->strreset_stream_list[i] = ntohs(list[i]);
3549 SCTP_BUF_LEN(m_notify) = len;
3550 SCTP_BUF_NEXT(m_notify) = NULL;
3551 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3553 sctp_m_freem(m_notify);
3556 /* append to socket */
3557 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3558 0, 0, stcb->asoc.context, 0, 0, 0,
3560 if (control == NULL) {
3562 sctp_m_freem(m_notify);
3565 control->spec_flags = M_NOTIFICATION;
3566 control->length = SCTP_BUF_LEN(m_notify);
3567 /* not that we need this */
3568 control->tail_mbuf = m_notify;
3569 sctp_add_to_readq(stcb->sctp_ep, stcb,
3571 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3576 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3578 struct mbuf *m_notify;
3579 struct sctp_remote_error *sre;
3580 struct sctp_queued_to_read *control;
3581 unsigned int notif_len;
3584 if ((stcb == NULL) ||
3585 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3588 if (chunk != NULL) {
3589 chunk_len = ntohs(chunk->ch.chunk_length);
3593 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
3594 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3595 if (m_notify == NULL) {
3596 /* Retry with smaller value. */
3597 notif_len = (unsigned int)sizeof(struct sctp_remote_error);
3598 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3599 if (m_notify == NULL) {
3603 SCTP_BUF_NEXT(m_notify) = NULL;
3604 sre = mtod(m_notify, struct sctp_remote_error *);
3605 memset(sre, 0, notif_len);
3606 sre->sre_type = SCTP_REMOTE_ERROR;
3608 sre->sre_length = sizeof(struct sctp_remote_error);
3609 sre->sre_error = error;
3610 sre->sre_assoc_id = sctp_get_associd(stcb);
3611 if (notif_len > sizeof(struct sctp_remote_error)) {
3612 memcpy(sre->sre_data, chunk, chunk_len);
3613 sre->sre_length += chunk_len;
3615 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3616 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3617 0, 0, stcb->asoc.context, 0, 0, 0,
3619 if (control != NULL) {
3620 control->length = SCTP_BUF_LEN(m_notify);
3621 /* not that we need this */
3622 control->tail_mbuf = m_notify;
3623 control->spec_flags = M_NOTIFICATION;
3624 sctp_add_to_readq(stcb->sctp_ep, stcb,
3626 &stcb->sctp_socket->so_rcv, 1,
3627 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3629 sctp_m_freem(m_notify);
3635 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3636 uint32_t error, void *data, int so_locked
3637 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3642 if ((stcb == NULL) ||
3643 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3644 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3645 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3646 /* If the socket is gone we are out of here */
3649 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3652 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3653 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3654 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3655 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3656 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3657 /* Don't report these in front states */
3661 switch (notification) {
3662 case SCTP_NOTIFY_ASSOC_UP:
3663 if (stcb->asoc.assoc_up_sent == 0) {
3664 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3665 stcb->asoc.assoc_up_sent = 1;
3667 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3668 sctp_notify_adaptation_layer(stcb);
3670 if (stcb->asoc.auth_supported == 0) {
3671 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3675 case SCTP_NOTIFY_ASSOC_DOWN:
3676 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3678 case SCTP_NOTIFY_INTERFACE_DOWN:
3680 struct sctp_nets *net;
3682 net = (struct sctp_nets *)data;
3683 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3684 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3687 case SCTP_NOTIFY_INTERFACE_UP:
3689 struct sctp_nets *net;
3691 net = (struct sctp_nets *)data;
3692 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3693 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3696 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3698 struct sctp_nets *net;
3700 net = (struct sctp_nets *)data;
3701 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3702 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3705 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3706 sctp_notify_send_failed2(stcb, error,
3707 (struct sctp_stream_queue_pending *)data, so_locked);
3709 case SCTP_NOTIFY_SENT_DG_FAIL:
3710 sctp_notify_send_failed(stcb, 1, error,
3711 (struct sctp_tmit_chunk *)data, so_locked);
3713 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3714 sctp_notify_send_failed(stcb, 0, error,
3715 (struct sctp_tmit_chunk *)data, so_locked);
3717 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3721 val = *((uint32_t *) data);
3723 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3726 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3727 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3728 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3729 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3731 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3734 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3735 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3736 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3737 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3739 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3742 case SCTP_NOTIFY_ASSOC_RESTART:
3743 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3744 if (stcb->asoc.auth_supported == 0) {
3745 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3749 case SCTP_NOTIFY_STR_RESET_SEND:
3750 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN);
3752 case SCTP_NOTIFY_STR_RESET_RECV:
3753 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING);
3755 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3756 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3757 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3759 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3760 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3761 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3763 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3764 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3765 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3767 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3768 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3769 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3771 case SCTP_NOTIFY_ASCONF_ADD_IP:
3772 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3775 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3776 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3779 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3780 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3783 case SCTP_NOTIFY_PEER_SHUTDOWN:
3784 sctp_notify_shutdown_event(stcb);
3786 case SCTP_NOTIFY_AUTH_NEW_KEY:
3787 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3788 (uint16_t) (uintptr_t) data,
3791 case SCTP_NOTIFY_AUTH_FREE_KEY:
3792 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3793 (uint16_t) (uintptr_t) data,
3796 case SCTP_NOTIFY_NO_PEER_AUTH:
3797 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3798 (uint16_t) (uintptr_t) data,
3801 case SCTP_NOTIFY_SENDER_DRY:
3802 sctp_notify_sender_dry_event(stcb, so_locked);
3804 case SCTP_NOTIFY_REMOTE_ERROR:
3805 sctp_notify_remote_error(stcb, error, data);
3808 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3809 __func__, notification, notification);
3815 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3816 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3821 struct sctp_association *asoc;
3822 struct sctp_stream_out *outs;
3823 struct sctp_tmit_chunk *chk, *nchk;
3824 struct sctp_stream_queue_pending *sp, *nsp;
3831 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3832 /* already being freed */
3835 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3836 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3837 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3840 /* now through all the gunk freeing chunks */
3841 if (holds_lock == 0) {
3842 SCTP_TCB_SEND_LOCK(stcb);
3844 /* sent queue SHOULD be empty */
3845 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3846 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3847 asoc->sent_queue_cnt--;
3848 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3849 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3850 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3853 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3857 if (chk->data != NULL) {
3858 sctp_free_bufspace(stcb, asoc, chk, 1);
3859 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3860 error, chk, so_locked);
3862 sctp_m_freem(chk->data);
3866 sctp_free_a_chunk(stcb, chk, so_locked);
3867 /* sa_ignore FREED_MEMORY */
3869 /* pending send queue SHOULD be empty */
3870 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3871 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3872 asoc->send_queue_cnt--;
3873 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3874 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3877 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3880 if (chk->data != NULL) {
3881 sctp_free_bufspace(stcb, asoc, chk, 1);
3882 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3883 error, chk, so_locked);
3885 sctp_m_freem(chk->data);
3889 sctp_free_a_chunk(stcb, chk, so_locked);
3890 /* sa_ignore FREED_MEMORY */
3892 for (i = 0; i < asoc->streamoutcnt; i++) {
3893 /* For each stream */
3894 outs = &asoc->strmout[i];
3895 /* clean up any sends there */
3896 asoc->locked_on_sending = NULL;
3897 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3898 asoc->stream_queue_cnt--;
3899 TAILQ_REMOVE(&outs->outqueue, sp, next);
3900 sctp_free_spbufspace(stcb, asoc, sp);
3902 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3903 error, (void *)sp, so_locked);
3905 sctp_m_freem(sp->data);
3907 sp->tail_mbuf = NULL;
3912 sctp_free_remote_addr(sp->net);
3915 /* Free the chunk */
3916 sctp_free_a_strmoq(stcb, sp, so_locked);
3917 /* sa_ignore FREED_MEMORY */
3921 if (holds_lock == 0) {
3922 SCTP_TCB_SEND_UNLOCK(stcb);
3927 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3928 struct sctp_abort_chunk *abort, int so_locked
3929 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3937 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3938 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3939 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3940 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3942 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3943 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3944 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3947 /* Tell them we lost the asoc */
3948 sctp_report_all_outbound(stcb, error, 1, so_locked);
3950 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3952 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3957 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3958 struct mbuf *m, int iphlen,
3959 struct sockaddr *src, struct sockaddr *dst,
3960 struct sctphdr *sh, struct mbuf *op_err,
3961 uint8_t mflowtype, uint32_t mflowid,
3962 uint32_t vrf_id, uint16_t port)
3966 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3973 /* We have a TCB to abort, send notification too */
3974 vtag = stcb->asoc.peer_vtag;
3975 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3976 /* get the assoc vrf id and table id */
3977 vrf_id = stcb->asoc.vrf_id;
3978 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3980 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3981 mflowtype, mflowid, inp->fibnum,
3984 /* Ok, now lets free it */
3985 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3986 so = SCTP_INP_SO(inp);
3987 atomic_add_int(&stcb->asoc.refcnt, 1);
3988 SCTP_TCB_UNLOCK(stcb);
3989 SCTP_SOCKET_LOCK(so, 1);
3990 SCTP_TCB_LOCK(stcb);
3991 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3993 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3994 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3995 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3996 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3998 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
3999 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
4000 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4001 SCTP_SOCKET_UNLOCK(so, 1);
4006 #ifdef SCTP_ASOCLOG_OF_TSNS
4008 sctp_print_out_track_log(struct sctp_tcb *stcb)
4013 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
4014 SCTP_PRINTF("IN bound TSN log-aaa\n");
4015 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4016 SCTP_PRINTF("None rcvd\n");
4019 if (stcb->asoc.tsn_in_wrapped) {
4020 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4021 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4022 stcb->asoc.in_tsnlog[i].tsn,
4023 stcb->asoc.in_tsnlog[i].strm,
4024 stcb->asoc.in_tsnlog[i].seq,
4025 stcb->asoc.in_tsnlog[i].flgs,
4026 stcb->asoc.in_tsnlog[i].sz);
4029 if (stcb->asoc.tsn_in_at) {
4030 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4031 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4032 stcb->asoc.in_tsnlog[i].tsn,
4033 stcb->asoc.in_tsnlog[i].strm,
4034 stcb->asoc.in_tsnlog[i].seq,
4035 stcb->asoc.in_tsnlog[i].flgs,
4036 stcb->asoc.in_tsnlog[i].sz);
4040 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4041 if ((stcb->asoc.tsn_out_at == 0) &&
4042 (stcb->asoc.tsn_out_wrapped == 0)) {
4043 SCTP_PRINTF("None sent\n");
4045 if (stcb->asoc.tsn_out_wrapped) {
4046 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4047 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4048 stcb->asoc.out_tsnlog[i].tsn,
4049 stcb->asoc.out_tsnlog[i].strm,
4050 stcb->asoc.out_tsnlog[i].seq,
4051 stcb->asoc.out_tsnlog[i].flgs,
4052 stcb->asoc.out_tsnlog[i].sz);
4055 if (stcb->asoc.tsn_out_at) {
4056 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4057 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4058 stcb->asoc.out_tsnlog[i].tsn,
4059 stcb->asoc.out_tsnlog[i].strm,
4060 stcb->asoc.out_tsnlog[i].seq,
4061 stcb->asoc.out_tsnlog[i].flgs,
4062 stcb->asoc.out_tsnlog[i].sz);
4071 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4072 struct mbuf *op_err,
4074 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4079 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4084 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4085 so = SCTP_INP_SO(inp);
4088 /* Got to have a TCB */
4089 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4090 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4091 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4092 SCTP_CALLED_DIRECTLY_NOCMPSET);
4097 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
4099 /* notify the ulp */
4100 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4101 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4103 /* notify the peer */
4104 sctp_send_abort_tcb(stcb, op_err, so_locked);
4105 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4106 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
4107 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4108 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4110 /* now free the asoc */
4111 #ifdef SCTP_ASOCLOG_OF_TSNS
4112 sctp_print_out_track_log(stcb);
4114 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4116 atomic_add_int(&stcb->asoc.refcnt, 1);
4117 SCTP_TCB_UNLOCK(stcb);
4118 SCTP_SOCKET_LOCK(so, 1);
4119 SCTP_TCB_LOCK(stcb);
4120 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4123 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4124 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4125 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4127 SCTP_SOCKET_UNLOCK(so, 1);
4133 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4134 struct sockaddr *src, struct sockaddr *dst,
4135 struct sctphdr *sh, struct sctp_inpcb *inp,
4137 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4138 uint32_t vrf_id, uint16_t port)
4140 struct sctp_chunkhdr *ch, chunk_buf;
4141 unsigned int chk_length;
4142 int contains_init_chunk;
4144 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4145 /* Generate a TO address for future reference */
4146 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4147 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4148 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4149 SCTP_CALLED_DIRECTLY_NOCMPSET);
4152 contains_init_chunk = 0;
4153 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4154 sizeof(*ch), (uint8_t *) & chunk_buf);
4155 while (ch != NULL) {
4156 chk_length = ntohs(ch->chunk_length);
4157 if (chk_length < sizeof(*ch)) {
4158 /* break to abort land */
4161 switch (ch->chunk_type) {
4163 contains_init_chunk = 1;
4165 case SCTP_PACKET_DROPPED:
4166 /* we don't respond to pkt-dropped */
4168 case SCTP_ABORT_ASSOCIATION:
4169 /* we don't respond with an ABORT to an ABORT */
4171 case SCTP_SHUTDOWN_COMPLETE:
4173 * we ignore it since we are not waiting for it and
4177 case SCTP_SHUTDOWN_ACK:
4178 sctp_send_shutdown_complete2(src, dst, sh,
4179 mflowtype, mflowid, fibnum,
4185 offset += SCTP_SIZE32(chk_length);
4186 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4187 sizeof(*ch), (uint8_t *) & chunk_buf);
4189 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4190 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4191 (contains_init_chunk == 0))) {
4192 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4193 mflowtype, mflowid, fibnum,
4199 * check the inbound datagram to make sure there is not an abort inside it,
4200 * if there is return 1, else return 0.
4203 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
4205 struct sctp_chunkhdr *ch;
4206 struct sctp_init_chunk *init_chk, chunk_buf;
4208 unsigned int chk_length;
4210 offset = iphlen + sizeof(struct sctphdr);
4211 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4212 (uint8_t *) & chunk_buf);
4213 while (ch != NULL) {
4214 chk_length = ntohs(ch->chunk_length);
4215 if (chk_length < sizeof(*ch)) {
4216 /* packet is probably corrupt */
4219 /* we seem to be ok, is it an abort? */
4220 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4221 /* yep, tell them */
4224 if (ch->chunk_type == SCTP_INITIATION) {
4225 /* need to update the Vtag */
4226 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4227 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
4228 if (init_chk != NULL) {
4229 *vtagfill = ntohl(init_chk->init.initiate_tag);
4232 /* Nope, move to the next chunk */
4233 offset += SCTP_SIZE32(chk_length);
4234 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4235 sizeof(*ch), (uint8_t *) & chunk_buf);
4241 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4242 * set (i.e. it's 0) so, create this function to compare link local scopes
4246 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4248 struct sockaddr_in6 a, b;
4254 if (a.sin6_scope_id == 0)
4255 if (sa6_recoverscope(&a)) {
4256 /* can't get scope, so can't match */
4259 if (b.sin6_scope_id == 0)
4260 if (sa6_recoverscope(&b)) {
4261 /* can't get scope, so can't match */
4264 if (a.sin6_scope_id != b.sin6_scope_id)
4271 * returns a sockaddr_in6 with embedded scope recovered and removed
4273 struct sockaddr_in6 *
4274 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4276 /* check and strip embedded scope junk */
4277 if (addr->sin6_family == AF_INET6) {
4278 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4279 if (addr->sin6_scope_id == 0) {
4281 if (!sa6_recoverscope(store)) {
4282 /* use the recovered scope */
4286 /* else, return the original "to" addr */
4287 in6_clearscope(&addr->sin6_addr);
4297 * are the two addresses the same? currently a "scopeless" check returns: 1
4301 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4305 if (sa1 == NULL || sa2 == NULL)
4308 /* must be the same family */
4309 if (sa1->sa_family != sa2->sa_family)
4312 switch (sa1->sa_family) {
4316 /* IPv6 addresses */
4317 struct sockaddr_in6 *sin6_1, *sin6_2;
4319 sin6_1 = (struct sockaddr_in6 *)sa1;
4320 sin6_2 = (struct sockaddr_in6 *)sa2;
4321 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4328 /* IPv4 addresses */
4329 struct sockaddr_in *sin_1, *sin_2;
4331 sin_1 = (struct sockaddr_in *)sa1;
4332 sin_2 = (struct sockaddr_in *)sa2;
4333 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4337 /* we don't do these... */
4343 sctp_print_address(struct sockaddr *sa)
4346 char ip6buf[INET6_ADDRSTRLEN];
4350 switch (sa->sa_family) {
4354 struct sockaddr_in6 *sin6;
4356 sin6 = (struct sockaddr_in6 *)sa;
4357 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4358 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4359 ntohs(sin6->sin6_port),
4360 sin6->sin6_scope_id);
4367 struct sockaddr_in *sin;
4370 sin = (struct sockaddr_in *)sa;
4371 p = (unsigned char *)&sin->sin_addr;
4372 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4373 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4384 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4385 struct sctp_inpcb *new_inp,
4386 struct sctp_tcb *stcb,
4390 * go through our old INP and pull off any control structures that
4391 * belong to stcb and move then to the new inp.
4393 struct socket *old_so, *new_so;
4394 struct sctp_queued_to_read *control, *nctl;
4395 struct sctp_readhead tmp_queue;
4399 old_so = old_inp->sctp_socket;
4400 new_so = new_inp->sctp_socket;
4401 TAILQ_INIT(&tmp_queue);
4402 error = sblock(&old_so->so_rcv, waitflags);
4405 * Gak, can't get sblock, we have a problem. data will be
4406 * left stranded.. and we don't dare look at it since the
4407 * other thread may be reading something. Oh well, its a
4408 * screwed up app that does a peeloff OR a accept while
4409 * reading from the main socket... actually its only the
4410 * peeloff() case, since I think read will fail on a
4411 * listening socket..
4415 /* lock the socket buffers */
4416 SCTP_INP_READ_LOCK(old_inp);
4417 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4418 /* Pull off all for out target stcb */
4419 if (control->stcb == stcb) {
4420 /* remove it we want it */
4421 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4422 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4425 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4426 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4428 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4429 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4430 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4432 m = SCTP_BUF_NEXT(m);
4436 SCTP_INP_READ_UNLOCK(old_inp);
4437 /* Remove the sb-lock on the old socket */
4439 sbunlock(&old_so->so_rcv);
4440 /* Now we move them over to the new socket buffer */
4441 SCTP_INP_READ_LOCK(new_inp);
4442 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4443 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4446 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4447 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4449 sctp_sballoc(stcb, &new_so->so_rcv, m);
4450 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4451 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4453 m = SCTP_BUF_NEXT(m);
4456 SCTP_INP_READ_UNLOCK(new_inp);
4460 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
4461 struct sctp_tcb *stcb,
4463 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4468 if ((inp != NULL) && (inp->sctp_socket != NULL)) {
4469 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4470 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4472 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4475 so = SCTP_INP_SO(inp);
4478 atomic_add_int(&stcb->asoc.refcnt, 1);
4479 SCTP_TCB_UNLOCK(stcb);
4481 SCTP_SOCKET_LOCK(so, 1);
4483 SCTP_TCB_LOCK(stcb);
4484 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4486 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4487 SCTP_SOCKET_UNLOCK(so, 1);
4492 sctp_sorwakeup(inp, inp->sctp_socket);
4493 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4495 SCTP_SOCKET_UNLOCK(so, 1);
4503 sctp_add_to_readq(struct sctp_inpcb *inp,
4504 struct sctp_tcb *stcb,
4505 struct sctp_queued_to_read *control,
4508 int inp_read_lock_held,
4510 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4516 * Here we must place the control on the end of the socket read
4517 * queue AND increment sb_cc so that select will work properly on
4520 struct mbuf *m, *prev = NULL;
4525 panic("Gak, inp NULL on add_to_readq");
4529 if (inp_read_lock_held == 0)
4530 SCTP_INP_READ_LOCK(inp);
4531 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4532 sctp_free_remote_addr(control->whoFrom);
4533 if (control->data) {
4534 sctp_m_freem(control->data);
4535 control->data = NULL;
4537 sctp_free_a_readq(stcb, control);
4538 if (inp_read_lock_held == 0)
4539 SCTP_INP_READ_UNLOCK(inp);
4542 if (!(control->spec_flags & M_NOTIFICATION)) {
4543 atomic_add_int(&inp->total_recvs, 1);
4544 if (!control->do_not_ref_stcb) {
4545 atomic_add_int(&stcb->total_recvs, 1);
4549 control->held_length = 0;
4550 control->length = 0;
4552 if (SCTP_BUF_LEN(m) == 0) {
4553 /* Skip mbufs with NO length */
4556 control->data = sctp_m_free(m);
4559 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4560 m = SCTP_BUF_NEXT(prev);
4563 control->tail_mbuf = prev;
4568 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4569 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4571 sctp_sballoc(stcb, sb, m);
4572 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4573 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4575 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4576 m = SCTP_BUF_NEXT(m);
4579 control->tail_mbuf = prev;
4581 /* Everything got collapsed out?? */
4582 sctp_free_remote_addr(control->whoFrom);
4583 sctp_free_a_readq(stcb, control);
4584 if (inp_read_lock_held == 0)
4585 SCTP_INP_READ_UNLOCK(inp);
4589 control->end_added = 1;
4591 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4592 control->on_read_q = 1;
4593 if (inp_read_lock_held == 0)
4594 SCTP_INP_READ_UNLOCK(inp);
4595 if (inp && inp->sctp_socket) {
4596 sctp_wakeup_the_read_socket(inp, stcb, so_locked);
4600 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4601 *************ALTERNATE ROUTING CODE
4604 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4605 *************ALTERNATE ROUTING CODE
4609 sctp_generate_cause(uint16_t code, char *info)
4612 struct sctp_gen_error_cause *cause;
4616 if ((code == 0) || (info == NULL)) {
4619 info_len = strlen(info);
4620 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
4623 len = (uint16_t) (sizeof(struct sctp_paramhdr) + info_len);
4624 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4626 SCTP_BUF_LEN(m) = len;
4627 cause = mtod(m, struct sctp_gen_error_cause *);
4628 cause->code = htons(code);
4629 cause->length = htons(len);
4630 memcpy(cause->info, info, info_len);
4636 sctp_generate_no_user_data_cause(uint32_t tsn)
4639 struct sctp_error_no_user_data *no_user_data_cause;
4642 len = (uint16_t) sizeof(struct sctp_error_no_user_data);
4643 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4645 SCTP_BUF_LEN(m) = len;
4646 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4647 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4648 no_user_data_cause->cause.length = htons(len);
4649 no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */
4654 #ifdef SCTP_MBCNT_LOGGING
4656 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4657 struct sctp_tmit_chunk *tp1, int chk_cnt)
4659 if (tp1->data == NULL) {
4662 asoc->chunks_on_out_queue -= chk_cnt;
4663 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4664 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4665 asoc->total_output_queue_size,
4670 if (asoc->total_output_queue_size >= tp1->book_size) {
4671 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4673 asoc->total_output_queue_size = 0;
4676 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4677 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4678 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4679 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4681 stcb->sctp_socket->so_snd.sb_cc = 0;
4690 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4691 uint8_t sent, int so_locked
4692 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4697 struct sctp_stream_out *strq;
4698 struct sctp_tmit_chunk *chk = NULL, *tp2;
4699 struct sctp_stream_queue_pending *sp;
4700 uint16_t stream = 0, seq = 0;
4701 uint8_t foundeom = 0;
4704 int do_wakeup_routine = 0;
4706 stream = tp1->rec.data.stream_number;
4707 seq = tp1->rec.data.stream_seq;
4708 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
4709 stcb->asoc.abandoned_sent[0]++;
4710 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4711 stcb->asoc.strmout[stream].abandoned_sent[0]++;
4712 #if defined(SCTP_DETAILED_STR_STATS)
4713 stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4716 stcb->asoc.abandoned_unsent[0]++;
4717 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4718 stcb->asoc.strmout[stream].abandoned_unsent[0]++;
4719 #if defined(SCTP_DETAILED_STR_STATS)
4720 stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4724 ret_sz += tp1->book_size;
4725 if (tp1->data != NULL) {
4726 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4727 sctp_flight_size_decrease(tp1);
4728 sctp_total_flight_decrease(stcb, tp1);
4730 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4731 stcb->asoc.peers_rwnd += tp1->send_size;
4732 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4734 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4736 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4739 sctp_m_freem(tp1->data);
4742 do_wakeup_routine = 1;
4743 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4744 stcb->asoc.sent_queue_cnt_removeable--;
4747 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4748 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4749 SCTP_DATA_NOT_FRAG) {
4750 /* not frag'ed we ae done */
4753 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4754 /* end of frag, we are done */
4759 * Its a begin or middle piece, we must mark all of
4763 tp1 = TAILQ_NEXT(tp1, sctp_next);
4765 } while (tp1 && notdone);
4766 if (foundeom == 0) {
4768 * The multi-part message was scattered across the send and
4771 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4772 if ((tp1->rec.data.stream_number != stream) ||
4773 (tp1->rec.data.stream_seq != seq)) {
4777 * save to chk in case we have some on stream out
4778 * queue. If so and we have an un-transmitted one we
4779 * don't have to fudge the TSN.
4782 ret_sz += tp1->book_size;
4783 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4785 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4787 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4790 sctp_m_freem(tp1->data);
4793 /* No flight involved here book the size to 0 */
4795 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4798 do_wakeup_routine = 1;
4799 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4800 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4802 * on to the sent queue so we can wait for it to be
4805 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4807 stcb->asoc.send_queue_cnt--;
4808 stcb->asoc.sent_queue_cnt++;
4811 if (foundeom == 0) {
4813 * Still no eom found. That means there is stuff left on the
4814 * stream out queue.. yuck.
4816 SCTP_TCB_SEND_LOCK(stcb);
4817 strq = &stcb->asoc.strmout[stream];
4818 sp = TAILQ_FIRST(&strq->outqueue);
4820 sp->discard_rest = 1;
4822 * We may need to put a chunk on the queue that
4823 * holds the TSN that would have been sent with the
4827 /* Yep, we have to */
4828 sctp_alloc_a_chunk(stcb, chk);
4831 * we are hosed. All we can do is
4832 * nothing.. which will cause an
4833 * abort if the peer is paying
4838 memset(chk, 0, sizeof(*chk));
4839 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG;
4840 chk->sent = SCTP_FORWARD_TSN_SKIP;
4841 chk->asoc = &stcb->asoc;
4842 chk->rec.data.stream_seq = strq->next_sequence_send;
4843 chk->rec.data.stream_number = sp->stream;
4844 chk->rec.data.payloadtype = sp->ppid;
4845 chk->rec.data.context = sp->context;
4846 chk->flags = sp->act_flags;
4848 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4849 strq->chunks_on_queues++;
4850 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4851 stcb->asoc.sent_queue_cnt++;
4852 stcb->asoc.pr_sctp_cnt++;
4854 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4856 strq->next_sequence_send++;
4860 * Pull any data to free up the SB and allow
4861 * sender to "add more" while we will throw
4864 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4865 ret_sz += sp->length;
4866 do_wakeup_routine = 1;
4868 sctp_m_freem(sp->data);
4870 sp->tail_mbuf = NULL;
4874 SCTP_TCB_SEND_UNLOCK(stcb);
4876 if (do_wakeup_routine) {
4877 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4880 so = SCTP_INP_SO(stcb->sctp_ep);
4882 atomic_add_int(&stcb->asoc.refcnt, 1);
4883 SCTP_TCB_UNLOCK(stcb);
4884 SCTP_SOCKET_LOCK(so, 1);
4885 SCTP_TCB_LOCK(stcb);
4886 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4887 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4888 /* assoc was freed while we were unlocked */
4889 SCTP_SOCKET_UNLOCK(so, 1);
4894 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4895 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4897 SCTP_SOCKET_UNLOCK(so, 1);
4905 * checks to see if the given address, sa, is one that is currently known by
4906 * the kernel note: can't distinguish the same address on multiple interfaces
4907 * and doesn't handle multiple addresses with different zone/scope id's note:
4908 * ifa_ifwithaddr() compares the entire sockaddr struct
4911 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4914 struct sctp_laddr *laddr;
4916 if (holds_lock == 0) {
4917 SCTP_INP_RLOCK(inp);
4919 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4920 if (laddr->ifa == NULL)
4922 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4925 if (addr->sa_family == AF_INET) {
4926 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4927 laddr->ifa->address.sin.sin_addr.s_addr) {
4929 if (holds_lock == 0) {
4930 SCTP_INP_RUNLOCK(inp);
4932 return (laddr->ifa);
4938 if (addr->sa_family == AF_INET6) {
4939 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4940 &laddr->ifa->address.sin6)) {
4942 if (holds_lock == 0) {
4943 SCTP_INP_RUNLOCK(inp);
4945 return (laddr->ifa);
4951 if (holds_lock == 0) {
4952 SCTP_INP_RUNLOCK(inp);
4958 sctp_get_ifa_hash_val(struct sockaddr *addr)
4960 switch (addr->sa_family) {
4964 struct sockaddr_in *sin;
4966 sin = (struct sockaddr_in *)addr;
4967 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
4973 struct sockaddr_in6 *sin6;
4974 uint32_t hash_of_addr;
4976 sin6 = (struct sockaddr_in6 *)addr;
4977 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
4978 sin6->sin6_addr.s6_addr32[1] +
4979 sin6->sin6_addr.s6_addr32[2] +
4980 sin6->sin6_addr.s6_addr32[3]);
4981 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
4982 return (hash_of_addr);
4992 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
4994 struct sctp_ifa *sctp_ifap;
4995 struct sctp_vrf *vrf;
4996 struct sctp_ifalist *hash_head;
4997 uint32_t hash_of_addr;
4999 if (holds_lock == 0)
5000 SCTP_IPI_ADDR_RLOCK();
5002 vrf = sctp_find_vrf(vrf_id);
5004 if (holds_lock == 0)
5005 SCTP_IPI_ADDR_RUNLOCK();
5008 hash_of_addr = sctp_get_ifa_hash_val(addr);
5010 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5011 if (hash_head == NULL) {
5012 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5013 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
5014 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
5015 sctp_print_address(addr);
5016 SCTP_PRINTF("No such bucket for address\n");
5017 if (holds_lock == 0)
5018 SCTP_IPI_ADDR_RUNLOCK();
5022 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5023 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5026 if (addr->sa_family == AF_INET) {
5027 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5028 sctp_ifap->address.sin.sin_addr.s_addr) {
5030 if (holds_lock == 0)
5031 SCTP_IPI_ADDR_RUNLOCK();
5038 if (addr->sa_family == AF_INET6) {
5039 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5040 &sctp_ifap->address.sin6)) {
5042 if (holds_lock == 0)
5043 SCTP_IPI_ADDR_RUNLOCK();
5050 if (holds_lock == 0)
5051 SCTP_IPI_ADDR_RUNLOCK();
5056 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
5059 /* User pulled some data, do we need a rwnd update? */
5062 struct socket *so = NULL;
5067 atomic_add_int(&stcb->asoc.refcnt, 1);
5069 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5070 SCTP_STATE_SHUTDOWN_RECEIVED |
5071 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5072 /* Pre-check If we are freeing no update */
5075 SCTP_INP_INCR_REF(stcb->sctp_ep);
5076 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5077 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5080 so = stcb->sctp_socket;
5084 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5085 /* Have you have freed enough to look */
5087 /* Yep, its worth a look and the lock overhead */
5089 /* Figure out what the rwnd would be */
5090 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5091 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5092 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5096 if (dif >= rwnd_req) {
5098 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5101 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5103 * One last check before we allow the guy possibly
5104 * to get in. There is a race, where the guy has not
5105 * reached the gate. In that case
5109 SCTP_TCB_LOCK(stcb);
5110 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5111 /* No reports here */
5112 SCTP_TCB_UNLOCK(stcb);
5115 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5116 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5118 sctp_chunk_output(stcb->sctp_ep, stcb,
5119 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5120 /* make sure no timer is running */
5121 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5122 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5123 SCTP_TCB_UNLOCK(stcb);
5125 /* Update how much we have pending */
5126 stcb->freed_by_sorcv_sincelast = dif;
5129 if (so && r_unlocked && hold_rlock) {
5130 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5132 SCTP_INP_DECR_REF(stcb->sctp_ep);
5134 atomic_add_int(&stcb->asoc.refcnt, -1);
5139 sctp_sorecvmsg(struct socket *so,
5142 struct sockaddr *from,
5145 struct sctp_sndrcvinfo *sinfo,
5149 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5150 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5151 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5152 * On the way out we may send out any combination of:
5153 * MSG_NOTIFICATION MSG_EOR
5156 struct sctp_inpcb *inp = NULL;
5158 int cp_len = 0, error = 0;
5159 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5160 struct mbuf *m = NULL;
5161 struct sctp_tcb *stcb = NULL;
5162 int wakeup_read_socket = 0;
5163 int freecnt_applied = 0;
5164 int out_flags = 0, in_flags = 0;
5165 int block_allowed = 1;
5166 uint32_t freed_so_far = 0;
5167 uint32_t copied_so_far = 0;
5168 int in_eeor_mode = 0;
5169 int no_rcv_needed = 0;
5170 uint32_t rwnd_req = 0;
5171 int hold_sblock = 0;
5174 uint32_t held_length = 0;
5175 int sockbuf_lock = 0;
5178 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5182 in_flags = *msg_flags;
5183 if (in_flags & MSG_PEEK)
5184 SCTP_STAT_INCR(sctps_read_peeks);
5188 slen = uio->uio_resid;
5190 /* Pull in and set up our int flags */
5191 if (in_flags & MSG_OOB) {
5192 /* Out of band's NOT supported */
5193 return (EOPNOTSUPP);
5195 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5196 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5199 if ((in_flags & (MSG_DONTWAIT
5202 SCTP_SO_IS_NBIO(so)) {
5205 /* setup the endpoint */
5206 inp = (struct sctp_inpcb *)so->so_pcb;
5208 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5211 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5212 /* Must be at least a MTU's worth */
5213 if (rwnd_req < SCTP_MIN_RWND)
5214 rwnd_req = SCTP_MIN_RWND;
5215 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5216 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5217 sctp_misc_ints(SCTP_SORECV_ENTER,
5218 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t) uio->uio_resid);
5220 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5221 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5222 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t) uio->uio_resid);
5224 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5226 goto release_unlocked;
5233 if (hold_sblock == 0) {
5234 SOCKBUF_LOCK(&so->so_rcv);
5237 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5238 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5241 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5243 error = so->so_error;
5244 if ((in_flags & MSG_PEEK) == 0)
5248 if (so->so_rcv.sb_cc == 0) {
5255 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
5256 /* we need to wait for data */
5257 if ((so->so_rcv.sb_cc == 0) &&
5258 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5259 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5260 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5262 * For active open side clear flags for
5263 * re-use passive open is blocked by
5266 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5268 * You were aborted, passive side
5271 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5274 so->so_state &= ~(SS_ISCONNECTING |
5275 SS_ISDISCONNECTING |
5279 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5280 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5287 error = sbwait(&so->so_rcv);
5292 goto restart_nosblocks;
5293 } else if (so->so_rcv.sb_cc == 0) {
5295 error = so->so_error;
5296 if ((in_flags & MSG_PEEK) == 0)
5299 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5300 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
5301 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5303 * For active open side clear flags
5304 * for re-use passive open is
5305 * blocked by connect.
5307 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5309 * You were aborted, passive
5310 * side always hits here
5312 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5315 so->so_state &= ~(SS_ISCONNECTING |
5316 SS_ISDISCONNECTING |
5320 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5321 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5328 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5329 error = EWOULDBLOCK;
5333 if (hold_sblock == 1) {
5334 SOCKBUF_UNLOCK(&so->so_rcv);
5337 /* we possibly have data we can read */
5338 /* sa_ignore FREED_MEMORY */
5339 control = TAILQ_FIRST(&inp->read_queue);
5340 if (control == NULL) {
5342 * This could be happening since the appender did the
5343 * increment but as not yet did the tailq insert onto the
5346 if (hold_rlock == 0) {
5347 SCTP_INP_READ_LOCK(inp);
5349 control = TAILQ_FIRST(&inp->read_queue);
5350 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5352 panic("Huh, its non zero and nothing on control?");
5354 so->so_rcv.sb_cc = 0;
5356 SCTP_INP_READ_UNLOCK(inp);
5360 if ((control->length == 0) &&
5361 (control->do_not_ref_stcb)) {
5363 * Clean up code for freeing assoc that left behind a
5364 * pdapi.. maybe a peer in EEOR that just closed after
5365 * sending and never indicated a EOR.
5367 if (hold_rlock == 0) {
5369 SCTP_INP_READ_LOCK(inp);
5371 control->held_length = 0;
5372 if (control->data) {
5373 /* Hmm there is data here .. fix */
5377 m_tmp = control->data;
5379 cnt += SCTP_BUF_LEN(m_tmp);
5380 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5381 control->tail_mbuf = m_tmp;
5382 control->end_added = 1;
5384 m_tmp = SCTP_BUF_NEXT(m_tmp);
5386 control->length = cnt;
5389 TAILQ_REMOVE(&inp->read_queue, control, next);
5390 /* Add back any hiddend data */
5391 sctp_free_remote_addr(control->whoFrom);
5392 sctp_free_a_readq(stcb, control);
5396 SCTP_INP_READ_UNLOCK(inp);
5400 if ((control->length == 0) &&
5401 (control->end_added == 1)) {
5403 * Do we also need to check for (control->pdapi_aborted ==
5406 if (hold_rlock == 0) {
5408 SCTP_INP_READ_LOCK(inp);
5410 TAILQ_REMOVE(&inp->read_queue, control, next);
5411 if (control->data) {
5413 panic("control->data not null but control->length == 0");
5415 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5416 sctp_m_freem(control->data);
5417 control->data = NULL;
5420 if (control->aux_data) {
5421 sctp_m_free(control->aux_data);
5422 control->aux_data = NULL;
5425 if (control->on_strm_q) {
5426 panic("About to free ctl:%p so:%p and its in %d",
5427 control, so, control->on_strm_q);
5430 sctp_free_remote_addr(control->whoFrom);
5431 sctp_free_a_readq(stcb, control);
5434 SCTP_INP_READ_UNLOCK(inp);
5438 if (control->length == 0) {
5439 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5441 /* find a more suitable one then this */
5442 ctl = TAILQ_NEXT(control, next);
5444 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5446 (ctl->spec_flags & M_NOTIFICATION) ||
5447 ((ctl->do_not_ref_stcb == 0) &&
5448 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5451 * If we have a different TCB next, and there is data
5452 * present. If we have already taken some (pdapi), OR we can
5453 * ref the tcb and no delivery as started on this stream, we
5454 * take it. Note we allow a notification on a different
5455 * assoc to be delivered..
5459 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5461 ((ctl->some_taken) ||
5462 ((ctl->do_not_ref_stcb == 0) &&
5463 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5464 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5466 * If we have the same tcb, and there is data present, and we
5467 * have the strm interleave feature present. Then if we have
5468 * taken some (pdapi) or we can refer to tht tcb AND we have
5469 * not started a delivery for this stream, we can take it.
5470 * Note we do NOT allow a notificaiton on the same assoc to
5476 ctl = TAILQ_NEXT(ctl, next);
5480 * if we reach here, not suitable replacement is available
5481 * <or> fragment interleave is NOT on. So stuff the sb_cc
5482 * into the our held count, and its time to sleep again.
5484 held_length = so->so_rcv.sb_cc;
5485 control->held_length = so->so_rcv.sb_cc;
5488 /* Clear the held length since there is something to read */
5489 control->held_length = 0;
5491 SCTP_INP_READ_UNLOCK(inp);
5496 * If we reach here, control has a some data for us to read off.
5497 * Note that stcb COULD be NULL.
5499 control->some_taken++;
5501 SOCKBUF_UNLOCK(&so->so_rcv);
5504 stcb = control->stcb;
5506 if ((control->do_not_ref_stcb == 0) &&
5507 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5508 if (freecnt_applied == 0)
5510 } else if (control->do_not_ref_stcb == 0) {
5511 /* you can't free it on me please */
5513 * The lock on the socket buffer protects us so the
5514 * free code will stop. But since we used the
5515 * socketbuf lock and the sender uses the tcb_lock
5516 * to increment, we need to use the atomic add to
5519 if (freecnt_applied) {
5521 panic("refcnt already incremented");
5523 SCTP_PRINTF("refcnt already incremented?\n");
5526 atomic_add_int(&stcb->asoc.refcnt, 1);
5527 freecnt_applied = 1;
5530 * Setup to remember how much we have not yet told
5531 * the peer our rwnd has opened up. Note we grab the
5532 * value from the tcb from last time. Note too that
5533 * sack sending clears this when a sack is sent,
5534 * which is fine. Once we hit the rwnd_req, we then
5535 * will go to the sctp_user_rcvd() that will not
5536 * lock until it KNOWs it MUST send a WUP-SACK.
5538 freed_so_far = stcb->freed_by_sorcv_sincelast;
5539 stcb->freed_by_sorcv_sincelast = 0;
5543 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5544 control->do_not_ref_stcb == 0) {
5545 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5547 /* First lets get off the sinfo and sockaddr info */
5548 if ((sinfo) && filling_sinfo) {
5549 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo));
5550 nxt = TAILQ_NEXT(control, next);
5551 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5552 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5553 struct sctp_extrcvinfo *s_extra;
5555 s_extra = (struct sctp_extrcvinfo *)sinfo;
5558 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5559 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5560 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5562 if (nxt->spec_flags & M_NOTIFICATION) {
5563 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5565 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5566 s_extra->serinfo_next_length = nxt->length;
5567 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5568 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5569 if (nxt->tail_mbuf != NULL) {
5570 if (nxt->end_added) {
5571 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5576 * we explicitly 0 this, since the memcpy
5577 * got some other things beyond the older
5578 * sinfo_ that is on the control's structure
5582 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5583 s_extra->serinfo_next_aid = 0;
5584 s_extra->serinfo_next_length = 0;
5585 s_extra->serinfo_next_ppid = 0;
5586 s_extra->serinfo_next_stream = 0;
5590 * update off the real current cum-ack, if we have an stcb.
5592 if ((control->do_not_ref_stcb == 0) && stcb)
5593 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5595 * mask off the high bits, we keep the actual chunk bits in
5598 sinfo->sinfo_flags &= 0x00ff;
5599 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5600 sinfo->sinfo_flags |= SCTP_UNORDERED;
5603 #ifdef SCTP_ASOCLOG_OF_TSNS
5605 int index, newindex;
5606 struct sctp_pcbtsn_rlog *entry;
5609 index = inp->readlog_index;
5610 newindex = index + 1;
5611 if (newindex >= SCTP_READ_LOG_SIZE) {
5614 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5615 entry = &inp->readlog[index];
5616 entry->vtag = control->sinfo_assoc_id;
5617 entry->strm = control->sinfo_stream;
5618 entry->seq = control->sinfo_ssn;
5619 entry->sz = control->length;
5620 entry->flgs = control->sinfo_flags;
5623 if ((fromlen > 0) && (from != NULL)) {
5624 union sctp_sockstore store;
5627 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5630 len = sizeof(struct sockaddr_in6);
5631 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5632 store.sin6.sin6_port = control->port_from;
5638 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5639 len = sizeof(struct sockaddr_in6);
5640 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5642 store.sin6.sin6_port = control->port_from;
5644 len = sizeof(struct sockaddr_in);
5645 store.sin = control->whoFrom->ro._l_addr.sin;
5646 store.sin.sin_port = control->port_from;
5649 len = sizeof(struct sockaddr_in);
5650 store.sin = control->whoFrom->ro._l_addr.sin;
5651 store.sin.sin_port = control->port_from;
5659 memcpy(from, &store, min((size_t)fromlen, len));
5662 struct sockaddr_in6 lsa6, *from6;
5664 from6 = (struct sockaddr_in6 *)from;
5665 sctp_recover_scope_mac(from6, (&lsa6));
5669 /* now copy out what data we can */
5671 /* copy out each mbuf in the chain up to length */
5675 /* Move out all we can */
5676 cp_len = (int)uio->uio_resid;
5677 my_len = (int)SCTP_BUF_LEN(m);
5678 if (cp_len > my_len) {
5679 /* not enough in this buf */
5683 SCTP_INP_READ_UNLOCK(inp);
5687 error = uiomove(mtod(m, char *), cp_len, uio);
5689 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5692 if ((control->do_not_ref_stcb == 0) && stcb &&
5693 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5697 /* error we are out of here */
5700 SCTP_INP_READ_LOCK(inp);
5702 if (cp_len == SCTP_BUF_LEN(m)) {
5703 if ((SCTP_BUF_NEXT(m) == NULL) &&
5704 (control->end_added)) {
5705 out_flags |= MSG_EOR;
5706 if ((control->do_not_ref_stcb == 0) &&
5707 (control->stcb != NULL) &&
5708 ((control->spec_flags & M_NOTIFICATION) == 0))
5709 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5711 if (control->spec_flags & M_NOTIFICATION) {
5712 out_flags |= MSG_NOTIFICATION;
5714 /* we ate up the mbuf */
5715 if (in_flags & MSG_PEEK) {
5717 m = SCTP_BUF_NEXT(m);
5718 copied_so_far += cp_len;
5720 /* dispose of the mbuf */
5721 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5722 sctp_sblog(&so->so_rcv,
5723 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5725 sctp_sbfree(control, stcb, &so->so_rcv, m);
5726 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5727 sctp_sblog(&so->so_rcv,
5728 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5730 copied_so_far += cp_len;
5731 freed_so_far += cp_len;
5732 freed_so_far += MSIZE;
5733 atomic_subtract_int(&control->length, cp_len);
5734 control->data = sctp_m_free(m);
5737 * been through it all, must hold sb
5738 * lock ok to null tail
5740 if (control->data == NULL) {
5742 if ((control->end_added == 0) ||
5743 (TAILQ_NEXT(control, next) == NULL)) {
5751 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5752 panic("Hmm we don't own the lock?");
5756 control->tail_mbuf = NULL;
5758 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5759 panic("end_added, nothing left and no MSG_EOR");
5765 /* Do we need to trim the mbuf? */
5766 if (control->spec_flags & M_NOTIFICATION) {
5767 out_flags |= MSG_NOTIFICATION;
5769 if ((in_flags & MSG_PEEK) == 0) {
5770 SCTP_BUF_RESV_UF(m, cp_len);
5771 SCTP_BUF_LEN(m) -= cp_len;
5772 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5773 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5775 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5776 if ((control->do_not_ref_stcb == 0) &&
5778 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5780 copied_so_far += cp_len;
5781 freed_so_far += cp_len;
5782 freed_so_far += MSIZE;
5783 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5784 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5785 SCTP_LOG_SBRESULT, 0);
5787 atomic_subtract_int(&control->length, cp_len);
5789 copied_so_far += cp_len;
5792 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5795 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5796 (control->do_not_ref_stcb == 0) &&
5797 (freed_so_far >= rwnd_req)) {
5798 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5800 } /* end while(m) */
5802 * At this point we have looked at it all and we either have
5803 * a MSG_EOR/or read all the user wants... <OR>
5804 * control->length == 0.
5806 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5807 /* we are done with this control */
5808 if (control->length == 0) {
5809 if (control->data) {
5811 panic("control->data not null at read eor?");
5813 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5814 sctp_m_freem(control->data);
5815 control->data = NULL;
5819 if (hold_rlock == 0) {
5820 SCTP_INP_READ_LOCK(inp);
5823 TAILQ_REMOVE(&inp->read_queue, control, next);
5824 /* Add back any hiddend data */
5825 if (control->held_length) {
5827 control->held_length = 0;
5828 wakeup_read_socket = 1;
5830 if (control->aux_data) {
5831 sctp_m_free(control->aux_data);
5832 control->aux_data = NULL;
5834 no_rcv_needed = control->do_not_ref_stcb;
5835 sctp_free_remote_addr(control->whoFrom);
5836 control->data = NULL;
5838 if (control->on_strm_q) {
5839 panic("About to free ctl:%p so:%p and its in %d",
5840 control, so, control->on_strm_q);
5843 sctp_free_a_readq(stcb, control);
5845 if ((freed_so_far >= rwnd_req) &&
5846 (no_rcv_needed == 0))
5847 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5851 * The user did not read all of this
5852 * message, turn off the returned MSG_EOR
5853 * since we are leaving more behind on the
5857 if (control->end_added &&
5858 (control->data == NULL) &&
5859 (control->tail_mbuf == NULL)) {
5860 panic("Gak, control->length is corrupt?");
5863 no_rcv_needed = control->do_not_ref_stcb;
5864 out_flags &= ~MSG_EOR;
5867 if (out_flags & MSG_EOR) {
5870 if ((uio->uio_resid == 0) ||
5872 (copied_so_far >= (uint32_t) max(so->so_rcv.sb_lowat, 1)))) {
5876 * If I hit here the receiver wants more and this message is
5877 * NOT done (pd-api). So two questions. Can we block? if not
5878 * we are done. Did the user NOT set MSG_WAITALL?
5880 if (block_allowed == 0) {
5884 * We need to wait for more data a few things: - We don't
5885 * sbunlock() so we don't get someone else reading. - We
5886 * must be sure to account for the case where what is added
5887 * is NOT to our control when we wakeup.
5891 * Do we need to tell the transport a rwnd update might be
5892 * needed before we go to sleep?
5894 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5895 ((freed_so_far >= rwnd_req) &&
5896 (control->do_not_ref_stcb == 0) &&
5897 (no_rcv_needed == 0))) {
5898 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5901 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5904 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5907 if (hold_rlock == 1) {
5908 SCTP_INP_READ_UNLOCK(inp);
5911 if (hold_sblock == 0) {
5912 SOCKBUF_LOCK(&so->so_rcv);
5915 if ((copied_so_far) && (control->length == 0) &&
5916 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5919 if (so->so_rcv.sb_cc <= control->held_length) {
5920 error = sbwait(&so->so_rcv);
5924 control->held_length = 0;
5927 SOCKBUF_UNLOCK(&so->so_rcv);
5930 if (control->length == 0) {
5931 /* still nothing here */
5932 if (control->end_added == 1) {
5933 /* he aborted, or is done i.e.did a shutdown */
5934 out_flags |= MSG_EOR;
5935 if (control->pdapi_aborted) {
5936 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5937 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5939 out_flags |= MSG_TRUNC;
5941 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5942 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5944 goto done_with_control;
5946 if (so->so_rcv.sb_cc > held_length) {
5947 control->held_length = so->so_rcv.sb_cc;
5950 goto wait_some_more;
5951 } else if (control->data == NULL) {
5953 * we must re-sync since data is probably being
5956 SCTP_INP_READ_LOCK(inp);
5957 if ((control->length > 0) && (control->data == NULL)) {
5959 * big trouble.. we have the lock and its
5963 panic("Impossible data==NULL length !=0");
5965 out_flags |= MSG_EOR;
5966 out_flags |= MSG_TRUNC;
5967 control->length = 0;
5968 SCTP_INP_READ_UNLOCK(inp);
5969 goto done_with_control;
5971 SCTP_INP_READ_UNLOCK(inp);
5972 /* We will fall around to get more data */
5977 * Give caller back the mbuf chain,
5978 * store in uio_resid the length
5980 wakeup_read_socket = 0;
5981 if ((control->end_added == 0) ||
5982 (TAILQ_NEXT(control, next) == NULL)) {
5983 /* Need to get rlock */
5984 if (hold_rlock == 0) {
5985 SCTP_INP_READ_LOCK(inp);
5989 if (control->end_added) {
5990 out_flags |= MSG_EOR;
5991 if ((control->do_not_ref_stcb == 0) &&
5992 (control->stcb != NULL) &&
5993 ((control->spec_flags & M_NOTIFICATION) == 0))
5994 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5996 if (control->spec_flags & M_NOTIFICATION) {
5997 out_flags |= MSG_NOTIFICATION;
5999 uio->uio_resid = control->length;
6000 *mp = control->data;
6003 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6004 sctp_sblog(&so->so_rcv,
6005 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6007 sctp_sbfree(control, stcb, &so->so_rcv, m);
6008 freed_so_far += SCTP_BUF_LEN(m);
6009 freed_so_far += MSIZE;
6010 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6011 sctp_sblog(&so->so_rcv,
6012 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6014 m = SCTP_BUF_NEXT(m);
6016 control->data = control->tail_mbuf = NULL;
6017 control->length = 0;
6018 if (out_flags & MSG_EOR) {
6019 /* Done with this control */
6020 goto done_with_control;
6024 if (hold_rlock == 1) {
6025 SCTP_INP_READ_UNLOCK(inp);
6028 if (hold_sblock == 1) {
6029 SOCKBUF_UNLOCK(&so->so_rcv);
6032 sbunlock(&so->so_rcv);
6037 SOCKBUF_UNLOCK(&so->so_rcv);
6040 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6041 if ((freed_so_far >= rwnd_req) &&
6042 (control && (control->do_not_ref_stcb == 0)) &&
6043 (no_rcv_needed == 0))
6044 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6048 *msg_flags = out_flags;
6050 if (((out_flags & MSG_EOR) == 0) &&
6051 ((in_flags & MSG_PEEK) == 0) &&
6053 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6054 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6055 struct sctp_extrcvinfo *s_extra;
6057 s_extra = (struct sctp_extrcvinfo *)sinfo;
6058 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6060 if (hold_rlock == 1) {
6061 SCTP_INP_READ_UNLOCK(inp);
6064 SOCKBUF_UNLOCK(&so->so_rcv);
6067 sbunlock(&so->so_rcv);
6069 if (freecnt_applied) {
6071 * The lock on the socket buffer protects us so the free
6072 * code will stop. But since we used the socketbuf lock and
6073 * the sender uses the tcb_lock to increment, we need to use
6074 * the atomic add to the refcnt.
6078 panic("stcb for refcnt has gone NULL?");
6084 atomic_add_int(&stcb->asoc.refcnt, -1);
6085 /* Save the value back for next time */
6086 stcb->freed_by_sorcv_sincelast = freed_so_far;
6088 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6090 sctp_misc_ints(SCTP_SORECV_DONE,
6092 (uint32_t) ((uio) ? (slen - uio->uio_resid) : slen),
6096 sctp_misc_ints(SCTP_SORECV_DONE,
6098 (uint32_t) ((uio) ? (slen - uio->uio_resid) : slen),
6104 if (wakeup_read_socket) {
6105 sctp_sorwakeup(inp, so);
6111 #ifdef SCTP_MBUF_LOGGING
6113 sctp_m_free(struct mbuf *m)
6115 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6116 sctp_log_mb(m, SCTP_MBUF_IFREE);
6122 sctp_m_freem(struct mbuf *mb)
6125 mb = sctp_m_free(mb);
6131 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6134 * Given a local address. For all associations that holds the
6135 * address, request a peer-set-primary.
6137 struct sctp_ifa *ifa;
6138 struct sctp_laddr *wi;
6140 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6142 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6143 return (EADDRNOTAVAIL);
6146 * Now that we have the ifa we must awaken the iterator with this
6149 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6151 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6154 /* Now incr the count and int wi structure */
6155 SCTP_INCR_LADDR_COUNT();
6156 bzero(wi, sizeof(*wi));
6157 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6159 wi->action = SCTP_SET_PRIM_ADDR;
6160 atomic_add_int(&ifa->refcount, 1);
6162 /* Now add it to the work queue */
6163 SCTP_WQ_ADDR_LOCK();
6165 * Should this really be a tailq? As it is we will process the
6168 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6169 SCTP_WQ_ADDR_UNLOCK();
6170 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6171 (struct sctp_inpcb *)NULL,
6172 (struct sctp_tcb *)NULL,
6173 (struct sctp_nets *)NULL);
6179 sctp_soreceive(struct socket *so,
6180 struct sockaddr **psa,
6183 struct mbuf **controlp,
6187 uint8_t sockbuf[256];
6188 struct sockaddr *from;
6189 struct sctp_extrcvinfo sinfo;
6190 int filling_sinfo = 1;
6191 struct sctp_inpcb *inp;
6193 inp = (struct sctp_inpcb *)so->so_pcb;
6194 /* pickup the assoc we are reading from */
6196 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6199 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6200 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6201 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6202 (controlp == NULL)) {
6203 /* user does not want the sndrcv ctl */
6207 from = (struct sockaddr *)sockbuf;
6208 fromlen = sizeof(sockbuf);
6215 if (filling_sinfo) {
6216 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6218 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6219 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6220 if (controlp != NULL) {
6221 /* copy back the sinfo in a CMSG format */
6223 *controlp = sctp_build_ctl_nchunk(inp,
6224 (struct sctp_sndrcvinfo *)&sinfo);
6229 /* copy back the address info */
6230 if (from && from->sa_len) {
6231 *psa = sodupsockaddr(from, M_NOWAIT);
6244 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6245 int totaddr, int *error)
6249 struct sctp_inpcb *inp;
6250 struct sockaddr *sa;
6254 struct sockaddr_in *sin;
6258 struct sockaddr_in6 *sin6;
6263 inp = stcb->sctp_ep;
6265 for (i = 0; i < totaddr; i++) {
6266 switch (sa->sa_family) {
6269 incr = sizeof(struct sockaddr_in);
6270 sin = (struct sockaddr_in *)sa;
6271 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6272 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6273 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6274 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6275 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6276 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6280 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6281 SCTP_DONOT_SETSCOPE,
6282 SCTP_ADDR_IS_CONFIRMED)) {
6283 /* assoc gone no un-lock */
6284 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6285 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6286 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6295 incr = sizeof(struct sockaddr_in6);
6296 sin6 = (struct sockaddr_in6 *)sa;
6297 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6298 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6299 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6300 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6301 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6305 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6306 SCTP_DONOT_SETSCOPE,
6307 SCTP_ADDR_IS_CONFIRMED)) {
6308 /* assoc gone no un-lock */
6309 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6310 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6311 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6321 sa = (struct sockaddr *)((caddr_t)sa + incr);
6328 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6329 unsigned int *totaddr,
6330 unsigned int *num_v4, unsigned int *num_v6, int *error,
6331 unsigned int limit, int *bad_addr)
6333 struct sockaddr *sa;
6334 struct sctp_tcb *stcb = NULL;
6335 unsigned int incr, at, i;
6339 *error = *num_v6 = *num_v4 = 0;
6340 /* account and validate addresses */
6341 for (i = 0; i < *totaddr; i++) {
6342 switch (sa->sa_family) {
6345 if (sa->sa_len != incr) {
6346 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6352 incr = (unsigned int)sizeof(struct sockaddr_in);
6358 struct sockaddr_in6 *sin6;
6360 sin6 = (struct sockaddr_in6 *)sa;
6361 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6362 /* Must be non-mapped for connectx */
6363 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6368 if (sa->sa_len != incr) {
6369 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6375 incr = (unsigned int)sizeof(struct sockaddr_in6);
6384 if (i == *totaddr) {
6387 SCTP_INP_INCR_REF(inp);
6388 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6390 /* Already have or am bring up an association */
6393 SCTP_INP_DECR_REF(inp);
6395 if ((at + incr) > limit) {
6399 sa = (struct sockaddr *)((caddr_t)sa + incr);
6401 return ((struct sctp_tcb *)NULL);
6405 * sctp_bindx(ADD) for one address.
6406 * assumes all arguments are valid/checked by caller.
6409 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6410 struct sockaddr *sa, sctp_assoc_t assoc_id,
6411 uint32_t vrf_id, int *error, void *p)
6413 struct sockaddr *addr_touse;
6415 #if defined(INET) && defined(INET6)
6416 struct sockaddr_in sin;
6420 /* see if we're bound all already! */
6421 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6422 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6428 if (sa->sa_family == AF_INET6) {
6430 struct sockaddr_in6 *sin6;
6433 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6434 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6438 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6439 /* can only bind v6 on PF_INET6 sockets */
6440 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6445 sin6 = (struct sockaddr_in6 *)addr_touse;
6446 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6447 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6448 SCTP_IPV6_V6ONLY(inp)) {
6449 /* can't bind v4-mapped on PF_INET sockets */
6450 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6454 in6_sin6_2_sin(&sin, sin6);
6455 addr_touse = (struct sockaddr *)&sin;
6461 if (sa->sa_family == AF_INET) {
6462 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6463 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6467 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6468 SCTP_IPV6_V6ONLY(inp)) {
6469 /* can't bind v4 on PF_INET sockets */
6470 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6476 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6478 /* Can't get proc for Net/Open BSD */
6479 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6483 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6487 * No locks required here since bind and mgmt_ep_sa all do their own
6488 * locking. If we do something for the FIX: below we may need to
6489 * lock in that case.
6491 if (assoc_id == 0) {
6492 /* add the address */
6493 struct sctp_inpcb *lep;
6494 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6496 /* validate the incoming port */
6497 if ((lsin->sin_port != 0) &&
6498 (lsin->sin_port != inp->sctp_lport)) {
6499 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6503 /* user specified 0 port, set it to existing port */
6504 lsin->sin_port = inp->sctp_lport;
6507 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6510 * We must decrement the refcount since we have the
6511 * ep already and are binding. No remove going on
6514 SCTP_INP_DECR_REF(lep);
6517 /* already bound to it.. ok */
6519 } else if (lep == NULL) {
6520 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6521 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6522 SCTP_ADD_IP_ADDRESS,
6525 *error = EADDRINUSE;
6531 * FIX: decide whether we allow assoc based bindx
6537 * sctp_bindx(DELETE) for one address.
6538 * assumes all arguments are valid/checked by caller.
6541 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6542 struct sockaddr *sa, sctp_assoc_t assoc_id,
6543 uint32_t vrf_id, int *error)
6545 struct sockaddr *addr_touse;
6547 #if defined(INET) && defined(INET6)
6548 struct sockaddr_in sin;
6552 /* see if we're bound all already! */
6553 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6554 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6560 if (sa->sa_family == AF_INET6) {
6562 struct sockaddr_in6 *sin6;
6566 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6567 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6571 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6572 /* can only bind v6 on PF_INET6 sockets */
6573 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6578 sin6 = (struct sockaddr_in6 *)addr_touse;
6579 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6580 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6581 SCTP_IPV6_V6ONLY(inp)) {
6582 /* can't bind mapped-v4 on PF_INET sockets */
6583 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6587 in6_sin6_2_sin(&sin, sin6);
6588 addr_touse = (struct sockaddr *)&sin;
6594 if (sa->sa_family == AF_INET) {
6595 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6596 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6600 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6601 SCTP_IPV6_V6ONLY(inp)) {
6602 /* can't bind v4 on PF_INET sockets */
6603 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6610 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6611 * below is ever changed we may need to lock before calling
6612 * association level binding.
6614 if (assoc_id == 0) {
6615 /* delete the address */
6616 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6617 SCTP_DEL_IP_ADDRESS,
6621 * FIX: decide whether we allow assoc based bindx
6627 * returns the valid local address count for an assoc, taking into account
6631 sctp_local_addr_count(struct sctp_tcb *stcb)
6636 int ipv4_local_scope, ipv4_addr_legal;
6640 int local_scope, site_scope, ipv6_addr_legal;
6643 struct sctp_vrf *vrf;
6644 struct sctp_ifn *sctp_ifn;
6645 struct sctp_ifa *sctp_ifa;
6648 /* Turn on all the appropriate scopes */
6649 loopback_scope = stcb->asoc.scope.loopback_scope;
6651 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6652 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6655 local_scope = stcb->asoc.scope.local_scope;
6656 site_scope = stcb->asoc.scope.site_scope;
6657 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6659 SCTP_IPI_ADDR_RLOCK();
6660 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6662 /* no vrf, no addresses */
6663 SCTP_IPI_ADDR_RUNLOCK();
6666 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6668 * bound all case: go through all ifns on the vrf
6670 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6671 if ((loopback_scope == 0) &&
6672 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6675 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6676 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6678 switch (sctp_ifa->address.sa.sa_family) {
6681 if (ipv4_addr_legal) {
6682 struct sockaddr_in *sin;
6684 sin = &sctp_ifa->address.sin;
6685 if (sin->sin_addr.s_addr == 0) {
6692 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6693 &sin->sin_addr) != 0) {
6696 if ((ipv4_local_scope == 0) &&
6697 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6700 /* count this one */
6709 if (ipv6_addr_legal) {
6710 struct sockaddr_in6 *sin6;
6712 sin6 = &sctp_ifa->address.sin6;
6713 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6716 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6717 &sin6->sin6_addr) != 0) {
6720 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6721 if (local_scope == 0)
6723 if (sin6->sin6_scope_id == 0) {
6724 if (sa6_recoverscope(sin6) != 0)
6742 if ((site_scope == 0) &&
6743 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6746 /* count this one */
6761 struct sctp_laddr *laddr;
6763 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6765 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6768 /* count this one */
6772 SCTP_IPI_ADDR_RUNLOCK();
6776 #if defined(SCTP_LOCAL_TRACE_BUF)
6779 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)
6781 uint32_t saveindex, newindex;
6784 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6785 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6788 newindex = saveindex + 1;
6790 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6791 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6794 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6795 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6796 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6797 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6798 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6799 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6800 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6801 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6806 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
6807 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
6812 struct ip6_hdr *ip6;
6815 struct mbuf *sp, *last;
6816 struct udphdr *uhdr;
6819 if ((m->m_flags & M_PKTHDR) == 0) {
6820 /* Can't handle one that is not a pkt hdr */
6823 /* Pull the src port */
6824 iph = mtod(m, struct ip *);
6825 uhdr = (struct udphdr *)((caddr_t)iph + off);
6826 port = uhdr->uh_sport;
6828 * Split out the mbuf chain. Leave the IP header in m, place the
6831 sp = m_split(m, off, M_NOWAIT);
6833 /* Gak, drop packet, we can't do a split */
6836 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6837 /* Gak, packet can't have an SCTP header in it - too small */
6841 /* Now pull up the UDP header and SCTP header together */
6842 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6844 /* Gak pullup failed */
6847 /* Trim out the UDP header */
6848 m_adj(sp, sizeof(struct udphdr));
6850 /* Now reconstruct the mbuf chain */
6851 for (last = m; last->m_next; last = last->m_next);
6853 m->m_pkthdr.len += sp->m_pkthdr.len;
6855 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
6856 * checksum and it was valid. Since CSUM_DATA_VALID ==
6857 * CSUM_SCTP_VALID this would imply that the HW also verified the
6858 * SCTP checksum. Therefore, clear the bit.
6860 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
6861 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
6863 if_name(m->m_pkthdr.rcvif),
6864 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
6865 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
6866 iph = mtod(m, struct ip *);
6867 switch (iph->ip_v) {
6870 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
6871 sctp_input_with_port(m, off, port);
6875 case IPV6_VERSION >> 4:
6876 ip6 = mtod(m, struct ip6_hdr *);
6877 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
6878 sctp6_input_with_port(&m, &off, port);
6892 sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED)
6894 struct ip *outer_ip, *inner_ip;
6898 struct sctp_inpcb *inp;
6899 struct sctp_tcb *stcb;
6900 struct sctp_nets *net;
6901 struct sctp_init_chunk *ch;
6902 struct sockaddr_in src, dst;
6905 inner_ip = (struct ip *)vip;
6906 icmp = (struct icmp *)((caddr_t)inner_ip -
6907 (sizeof(struct icmp) - sizeof(struct ip)));
6908 outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
6909 if (ntohs(outer_ip->ip_len) <
6910 sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
6913 udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
6914 sh = (struct sctphdr *)(udp + 1);
6915 memset(&src, 0, sizeof(struct sockaddr_in));
6916 src.sin_family = AF_INET;
6917 src.sin_len = sizeof(struct sockaddr_in);
6918 src.sin_port = sh->src_port;
6919 src.sin_addr = inner_ip->ip_src;
6920 memset(&dst, 0, sizeof(struct sockaddr_in));
6921 dst.sin_family = AF_INET;
6922 dst.sin_len = sizeof(struct sockaddr_in);
6923 dst.sin_port = sh->dest_port;
6924 dst.sin_addr = inner_ip->ip_dst;
6926 * 'dst' holds the dest of the packet that failed to be sent. 'src'
6927 * holds our local endpoint address. Thus we reverse the dst and the
6928 * src in the lookup.
6932 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
6933 (struct sockaddr *)&src,
6935 SCTP_DEFAULT_VRFID);
6936 if ((stcb != NULL) &&
6939 (inp->sctp_socket != NULL)) {
6940 /* Check the UDP port numbers */
6941 if ((udp->uh_dport != net->port) ||
6942 (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
6943 SCTP_TCB_UNLOCK(stcb);
6946 /* Check the verification tag */
6947 if (ntohl(sh->v_tag) != 0) {
6949 * This must be the verification tag used for
6950 * sending out packets. We don't consider packets
6951 * reflecting the verification tag.
6953 if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
6954 SCTP_TCB_UNLOCK(stcb);
6958 if (ntohs(outer_ip->ip_len) >=
6960 8 + (inner_ip->ip_hl << 2) + 8 + 20) {
6962 * In this case we can check if we got an
6963 * INIT chunk and if the initiate tag
6966 ch = (struct sctp_init_chunk *)(sh + 1);
6967 if ((ch->ch.chunk_type != SCTP_INITIATION) ||
6968 (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
6969 SCTP_TCB_UNLOCK(stcb);
6973 SCTP_TCB_UNLOCK(stcb);
6977 type = icmp->icmp_type;
6978 code = icmp->icmp_code;
6979 if ((type == ICMP_UNREACH) &&
6980 (code == ICMP_UNREACH_PORT)) {
6981 code = ICMP_UNREACH_PROTOCOL;
6983 sctp_notify(inp, stcb, net, type, code,
6984 ntohs(inner_ip->ip_len),
6985 ntohs(icmp->icmp_nextmtu));
6987 if ((stcb == NULL) && (inp != NULL)) {
6988 /* reduce ref-count */
6989 SCTP_INP_WLOCK(inp);
6990 SCTP_INP_DECR_REF(inp);
6991 SCTP_INP_WUNLOCK(inp);
6994 SCTP_TCB_UNLOCK(stcb);
7004 sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED)
7006 struct ip6ctlparam *ip6cp;
7007 struct sctp_inpcb *inp;
7008 struct sctp_tcb *stcb;
7009 struct sctp_nets *net;
7012 struct sockaddr_in6 src, dst;
7015 ip6cp = (struct ip6ctlparam *)d;
7017 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid.
7019 if (ip6cp->ip6c_m == NULL) {
7023 * Check if we can safely examine the ports and the verification tag
7024 * of the SCTP common header.
7026 if (ip6cp->ip6c_m->m_pkthdr.len <
7027 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) {
7030 /* Copy out the UDP header. */
7031 memset(&udp, 0, sizeof(struct udphdr));
7032 m_copydata(ip6cp->ip6c_m,
7034 sizeof(struct udphdr),
7036 /* Copy out the port numbers and the verification tag. */
7037 memset(&sh, 0, sizeof(struct sctphdr));
7038 m_copydata(ip6cp->ip6c_m,
7039 ip6cp->ip6c_off + sizeof(struct udphdr),
7040 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
7042 memset(&src, 0, sizeof(struct sockaddr_in6));
7043 src.sin6_family = AF_INET6;
7044 src.sin6_len = sizeof(struct sockaddr_in6);
7045 src.sin6_port = sh.src_port;
7046 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
7047 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7050 memset(&dst, 0, sizeof(struct sockaddr_in6));
7051 dst.sin6_family = AF_INET6;
7052 dst.sin6_len = sizeof(struct sockaddr_in6);
7053 dst.sin6_port = sh.dest_port;
7054 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
7055 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7060 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7061 (struct sockaddr *)&src,
7062 &inp, &net, 1, SCTP_DEFAULT_VRFID);
7063 if ((stcb != NULL) &&
7066 (inp->sctp_socket != NULL)) {
7067 /* Check the UDP port numbers */
7068 if ((udp.uh_dport != net->port) ||
7069 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7070 SCTP_TCB_UNLOCK(stcb);
7073 /* Check the verification tag */
7074 if (ntohl(sh.v_tag) != 0) {
7076 * This must be the verification tag used for
7077 * sending out packets. We don't consider packets
7078 * reflecting the verification tag.
7080 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
7081 SCTP_TCB_UNLOCK(stcb);
7085 if (ip6cp->ip6c_m->m_pkthdr.len >=
7086 ip6cp->ip6c_off + sizeof(struct udphdr) +
7087 sizeof(struct sctphdr) +
7088 sizeof(struct sctp_chunkhdr) +
7089 offsetof(struct sctp_init, a_rwnd)) {
7091 * In this case we can check if we got an
7092 * INIT chunk and if the initiate tag
7095 uint32_t initiate_tag;
7098 m_copydata(ip6cp->ip6c_m,
7100 sizeof(struct udphdr) +
7101 sizeof(struct sctphdr),
7103 (caddr_t)&chunk_type);
7104 m_copydata(ip6cp->ip6c_m,
7106 sizeof(struct udphdr) +
7107 sizeof(struct sctphdr) +
7108 sizeof(struct sctp_chunkhdr),
7110 (caddr_t)&initiate_tag);
7111 if ((chunk_type != SCTP_INITIATION) ||
7112 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
7113 SCTP_TCB_UNLOCK(stcb);
7117 SCTP_TCB_UNLOCK(stcb);
7121 type = ip6cp->ip6c_icmp6->icmp6_type;
7122 code = ip6cp->ip6c_icmp6->icmp6_code;
7123 if ((type == ICMP6_DST_UNREACH) &&
7124 (code == ICMP6_DST_UNREACH_NOPORT)) {
7125 type = ICMP6_PARAM_PROB;
7126 code = ICMP6_PARAMPROB_NEXTHEADER;
7128 sctp6_notify(inp, stcb, net, type, code,
7129 (uint16_t) ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
7131 if ((stcb == NULL) && (inp != NULL)) {
7132 /* reduce inp's ref-count */
7133 SCTP_INP_WLOCK(inp);
7134 SCTP_INP_DECR_REF(inp);
7135 SCTP_INP_WUNLOCK(inp);
7138 SCTP_TCB_UNLOCK(stcb);
7146 sctp_over_udp_stop(void)
7149 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7153 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7154 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7155 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7159 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7160 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7161 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7167 sctp_over_udp_start(void)
7173 struct sockaddr_in sin;
7177 struct sockaddr_in6 sin6;
7181 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7184 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7185 if (ntohs(port) == 0) {
7186 /* Must have a port set */
7190 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7191 /* Already running -- must stop first */
7196 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7197 /* Already running -- must stop first */
7202 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7203 SOCK_DGRAM, IPPROTO_UDP,
7204 curthread->td_ucred, curthread))) {
7205 sctp_over_udp_stop();
7208 /* Call the special UDP hook. */
7209 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7210 sctp_recv_udp_tunneled_packet,
7211 sctp_recv_icmp_tunneled_packet,
7213 sctp_over_udp_stop();
7216 /* Ok, we have a socket, bind it to the port. */
7217 memset(&sin, 0, sizeof(struct sockaddr_in));
7218 sin.sin_len = sizeof(struct sockaddr_in);
7219 sin.sin_family = AF_INET;
7220 sin.sin_port = htons(port);
7221 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7222 (struct sockaddr *)&sin, curthread))) {
7223 sctp_over_udp_stop();
7228 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7229 SOCK_DGRAM, IPPROTO_UDP,
7230 curthread->td_ucred, curthread))) {
7231 sctp_over_udp_stop();
7234 /* Call the special UDP hook. */
7235 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7236 sctp_recv_udp_tunneled_packet,
7237 sctp_recv_icmp6_tunneled_packet,
7239 sctp_over_udp_stop();
7242 /* Ok, we have a socket, bind it to the port. */
7243 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7244 sin6.sin6_len = sizeof(struct sockaddr_in6);
7245 sin6.sin6_family = AF_INET6;
7246 sin6.sin6_port = htons(port);
7247 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7248 (struct sockaddr *)&sin6, curthread))) {
7249 sctp_over_udp_stop();