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_mid_ordered = 0;
1127 asoc->strmout[i].next_mid_unordered = 0;
1128 TAILQ_INIT(&asoc->strmout[i].outqueue);
1129 asoc->strmout[i].chunks_on_queues = 0;
1130 #if defined(SCTP_DETAILED_STR_STATS)
1131 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1132 asoc->strmout[i].abandoned_sent[j] = 0;
1133 asoc->strmout[i].abandoned_unsent[j] = 0;
1136 asoc->strmout[i].abandoned_sent[0] = 0;
1137 asoc->strmout[i].abandoned_unsent[0] = 0;
1139 asoc->strmout[i].stream_no = i;
1140 asoc->strmout[i].last_msg_incomplete = 0;
1141 asoc->strmout[i].state = SCTP_STREAM_OPENING;
1142 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL);
1144 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1146 /* Now the mapping array */
1147 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1148 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1150 if (asoc->mapping_array == NULL) {
1151 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1152 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1155 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1156 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1158 if (asoc->nr_mapping_array == NULL) {
1159 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1160 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1161 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1164 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1166 /* Now the init of the other outqueues */
1167 TAILQ_INIT(&asoc->free_chunks);
1168 TAILQ_INIT(&asoc->control_send_queue);
1169 TAILQ_INIT(&asoc->asconf_send_queue);
1170 TAILQ_INIT(&asoc->send_queue);
1171 TAILQ_INIT(&asoc->sent_queue);
1172 TAILQ_INIT(&asoc->resetHead);
1173 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1174 TAILQ_INIT(&asoc->asconf_queue);
1175 /* authentication fields */
1176 asoc->authinfo.random = NULL;
1177 asoc->authinfo.active_keyid = 0;
1178 asoc->authinfo.assoc_key = NULL;
1179 asoc->authinfo.assoc_keyid = 0;
1180 asoc->authinfo.recv_key = NULL;
1181 asoc->authinfo.recv_keyid = 0;
1182 LIST_INIT(&asoc->shared_keys);
1183 asoc->marked_retrans = 0;
1184 asoc->port = inp->sctp_ep.port;
1188 asoc->timoshutdown = 0;
1189 asoc->timoheartbeat = 0;
1190 asoc->timocookie = 0;
1191 asoc->timoshutdownack = 0;
1192 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1193 asoc->discontinuity_time = asoc->start_time;
1194 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1195 asoc->abandoned_unsent[i] = 0;
1196 asoc->abandoned_sent[i] = 0;
1199 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1200 * freed later when the association is freed.
1206 sctp_print_mapping_array(struct sctp_association *asoc)
1208 unsigned int i, limit;
1210 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1211 asoc->mapping_array_size,
1212 asoc->mapping_array_base_tsn,
1213 asoc->cumulative_tsn,
1214 asoc->highest_tsn_inside_map,
1215 asoc->highest_tsn_inside_nr_map);
1216 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1217 if (asoc->mapping_array[limit - 1] != 0) {
1221 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1222 for (i = 0; i < limit; i++) {
1223 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1227 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1228 if (asoc->nr_mapping_array[limit - 1]) {
1232 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1233 for (i = 0; i < limit; i++) {
1234 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1241 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1243 /* mapping array needs to grow */
1244 uint8_t *new_array1, *new_array2;
1247 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1248 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1249 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1250 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1251 /* can't get more, forget it */
1252 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1254 SCTP_FREE(new_array1, SCTP_M_MAP);
1257 SCTP_FREE(new_array2, SCTP_M_MAP);
1261 memset(new_array1, 0, new_size);
1262 memset(new_array2, 0, new_size);
1263 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1264 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1265 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1266 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1267 asoc->mapping_array = new_array1;
1268 asoc->nr_mapping_array = new_array2;
1269 asoc->mapping_array_size = new_size;
1275 sctp_iterator_work(struct sctp_iterator *it)
1277 int iteration_count = 0;
1280 struct sctp_inpcb *tinp;
1282 SCTP_INP_INFO_RLOCK();
1283 SCTP_ITERATOR_LOCK();
1285 SCTP_INP_RLOCK(it->inp);
1286 SCTP_INP_DECR_REF(it->inp);
1288 if (it->inp == NULL) {
1289 /* iterator is complete */
1291 SCTP_ITERATOR_UNLOCK();
1292 SCTP_INP_INFO_RUNLOCK();
1293 if (it->function_atend != NULL) {
1294 (*it->function_atend) (it->pointer, it->val);
1296 SCTP_FREE(it, SCTP_M_ITER);
1303 SCTP_INP_RLOCK(it->inp);
1305 while (((it->pcb_flags) &&
1306 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1307 ((it->pcb_features) &&
1308 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1309 /* endpoint flags or features don't match, so keep looking */
1310 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1311 SCTP_INP_RUNLOCK(it->inp);
1312 goto done_with_iterator;
1315 it->inp = LIST_NEXT(it->inp, sctp_list);
1316 SCTP_INP_RUNLOCK(tinp);
1317 if (it->inp == NULL) {
1318 goto done_with_iterator;
1320 SCTP_INP_RLOCK(it->inp);
1322 /* now go through each assoc which is in the desired state */
1323 if (it->done_current_ep == 0) {
1324 if (it->function_inp != NULL)
1325 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1326 it->done_current_ep = 1;
1328 if (it->stcb == NULL) {
1329 /* run the per instance function */
1330 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1332 if ((inp_skip) || it->stcb == NULL) {
1333 if (it->function_inp_end != NULL) {
1334 inp_skip = (*it->function_inp_end) (it->inp,
1338 SCTP_INP_RUNLOCK(it->inp);
1342 SCTP_TCB_LOCK(it->stcb);
1343 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1344 /* not in the right state... keep looking */
1345 SCTP_TCB_UNLOCK(it->stcb);
1348 /* see if we have limited out the iterator loop */
1350 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1351 /* Pause to let others grab the lock */
1352 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1353 SCTP_TCB_UNLOCK(it->stcb);
1354 SCTP_INP_INCR_REF(it->inp);
1355 SCTP_INP_RUNLOCK(it->inp);
1356 SCTP_ITERATOR_UNLOCK();
1357 SCTP_INP_INFO_RUNLOCK();
1358 SCTP_INP_INFO_RLOCK();
1359 SCTP_ITERATOR_LOCK();
1360 if (sctp_it_ctl.iterator_flags) {
1361 /* We won't be staying here */
1362 SCTP_INP_DECR_REF(it->inp);
1363 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1364 if (sctp_it_ctl.iterator_flags &
1365 SCTP_ITERATOR_STOP_CUR_IT) {
1366 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1367 goto done_with_iterator;
1369 if (sctp_it_ctl.iterator_flags &
1370 SCTP_ITERATOR_STOP_CUR_INP) {
1371 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1374 /* If we reach here huh? */
1375 SCTP_PRINTF("Unknown it ctl flag %x\n",
1376 sctp_it_ctl.iterator_flags);
1377 sctp_it_ctl.iterator_flags = 0;
1379 SCTP_INP_RLOCK(it->inp);
1380 SCTP_INP_DECR_REF(it->inp);
1381 SCTP_TCB_LOCK(it->stcb);
1382 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1383 iteration_count = 0;
1385 /* run function on this one */
1386 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1389 * we lie here, it really needs to have its own type but
1390 * first I must verify that this won't effect things :-0
1392 if (it->no_chunk_output == 0)
1393 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1395 SCTP_TCB_UNLOCK(it->stcb);
1397 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1398 if (it->stcb == NULL) {
1399 /* Run last function */
1400 if (it->function_inp_end != NULL) {
1401 inp_skip = (*it->function_inp_end) (it->inp,
1407 SCTP_INP_RUNLOCK(it->inp);
1409 /* done with all assocs on this endpoint, move on to next endpoint */
1410 it->done_current_ep = 0;
1411 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1414 it->inp = LIST_NEXT(it->inp, sctp_list);
1416 if (it->inp == NULL) {
1417 goto done_with_iterator;
1419 goto select_a_new_ep;
1423 sctp_iterator_worker(void)
1425 struct sctp_iterator *it, *nit;
1427 /* This function is called with the WQ lock in place */
1429 sctp_it_ctl.iterator_running = 1;
1430 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1431 sctp_it_ctl.cur_it = it;
1432 /* now lets work on this one */
1433 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1434 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1435 CURVNET_SET(it->vn);
1436 sctp_iterator_work(it);
1437 sctp_it_ctl.cur_it = NULL;
1439 SCTP_IPI_ITERATOR_WQ_LOCK();
1440 /* sa_ignore FREED_MEMORY */
1442 sctp_it_ctl.iterator_running = 0;
1448 sctp_handle_addr_wq(void)
1450 /* deal with the ADDR wq from the rtsock calls */
1451 struct sctp_laddr *wi, *nwi;
1452 struct sctp_asconf_iterator *asc;
1454 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1455 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1457 /* Try later, no memory */
1458 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1459 (struct sctp_inpcb *)NULL,
1460 (struct sctp_tcb *)NULL,
1461 (struct sctp_nets *)NULL);
1464 LIST_INIT(&asc->list_of_work);
1467 SCTP_WQ_ADDR_LOCK();
1468 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1469 LIST_REMOVE(wi, sctp_nxt_addr);
1470 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1473 SCTP_WQ_ADDR_UNLOCK();
1475 if (asc->cnt == 0) {
1476 SCTP_FREE(asc, SCTP_M_ASC_IT);
1480 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
1481 sctp_asconf_iterator_stcb,
1482 NULL, /* No ep end for boundall */
1483 SCTP_PCB_FLAGS_BOUNDALL,
1484 SCTP_PCB_ANY_FEATURES,
1485 SCTP_ASOC_ANY_STATE,
1487 sctp_asconf_iterator_end, NULL, 0);
1489 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
1491 * Freeing if we are stopping or put back on the
1494 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
1495 sctp_asconf_iterator_end(asc, 0);
1497 SCTP_WQ_ADDR_LOCK();
1498 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
1499 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
1501 SCTP_WQ_ADDR_UNLOCK();
1502 SCTP_FREE(asc, SCTP_M_ASC_IT);
1509 sctp_timeout_handler(void *t)
1511 struct sctp_inpcb *inp;
1512 struct sctp_tcb *stcb;
1513 struct sctp_nets *net;
1514 struct sctp_timer *tmr;
1515 struct mbuf *op_err;
1517 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1524 tmr = (struct sctp_timer *)t;
1525 inp = (struct sctp_inpcb *)tmr->ep;
1526 stcb = (struct sctp_tcb *)tmr->tcb;
1527 net = (struct sctp_nets *)tmr->net;
1528 CURVNET_SET((struct vnet *)tmr->vnet);
1531 #ifdef SCTP_AUDITING_ENABLED
1532 sctp_audit_log(0xF0, (uint8_t) tmr->type);
1533 sctp_auditing(3, inp, stcb, net);
1536 /* sanity checks... */
1537 if (tmr->self != (void *)tmr) {
1539 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1545 tmr->stopped_from = 0xa001;
1546 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1548 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1554 tmr->stopped_from = 0xa002;
1555 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1559 /* if this is an iterator timeout, get the struct and clear inp */
1560 tmr->stopped_from = 0xa003;
1562 SCTP_INP_INCR_REF(inp);
1563 if ((inp->sctp_socket == NULL) &&
1564 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1565 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1566 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1567 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1568 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1569 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1570 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1571 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1572 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1574 SCTP_INP_DECR_REF(inp);
1579 tmr->stopped_from = 0xa004;
1581 atomic_add_int(&stcb->asoc.refcnt, 1);
1582 if (stcb->asoc.state == 0) {
1583 atomic_add_int(&stcb->asoc.refcnt, -1);
1585 SCTP_INP_DECR_REF(inp);
1592 tmr->stopped_from = 0xa005;
1593 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type);
1594 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1596 SCTP_INP_DECR_REF(inp);
1599 atomic_add_int(&stcb->asoc.refcnt, -1);
1604 tmr->stopped_from = 0xa006;
1607 SCTP_TCB_LOCK(stcb);
1608 atomic_add_int(&stcb->asoc.refcnt, -1);
1609 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1610 ((stcb->asoc.state == 0) ||
1611 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1612 SCTP_TCB_UNLOCK(stcb);
1614 SCTP_INP_DECR_REF(inp);
1620 /* record in stopped what t-o occurred */
1621 tmr->stopped_from = type;
1623 /* mark as being serviced now */
1624 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1626 * Callout has been rescheduled.
1630 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1632 * Not active, so no action.
1636 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1638 /* call the handler for the appropriate timer type */
1640 case SCTP_TIMER_TYPE_ZERO_COPY:
1644 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1645 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1648 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1652 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1653 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1656 case SCTP_TIMER_TYPE_ADDR_WQ:
1657 sctp_handle_addr_wq();
1659 case SCTP_TIMER_TYPE_SEND:
1660 if ((stcb == NULL) || (inp == NULL)) {
1663 SCTP_STAT_INCR(sctps_timodata);
1664 stcb->asoc.timodata++;
1665 stcb->asoc.num_send_timers_up--;
1666 if (stcb->asoc.num_send_timers_up < 0) {
1667 stcb->asoc.num_send_timers_up = 0;
1669 SCTP_TCB_LOCK_ASSERT(stcb);
1670 if (sctp_t3rxt_timer(inp, stcb, net)) {
1671 /* no need to unlock on tcb its gone */
1675 SCTP_TCB_LOCK_ASSERT(stcb);
1676 #ifdef SCTP_AUDITING_ENABLED
1677 sctp_auditing(4, inp, stcb, net);
1679 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1680 if ((stcb->asoc.num_send_timers_up == 0) &&
1681 (stcb->asoc.sent_queue_cnt > 0)) {
1682 struct sctp_tmit_chunk *chk;
1685 * safeguard. If there on some on the sent queue
1686 * somewhere but no timers running something is
1687 * wrong... so we start a timer on the first chunk
1688 * on the send queue on whatever net it is sent to.
1690 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1691 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1695 case SCTP_TIMER_TYPE_INIT:
1696 if ((stcb == NULL) || (inp == NULL)) {
1699 SCTP_STAT_INCR(sctps_timoinit);
1700 stcb->asoc.timoinit++;
1701 if (sctp_t1init_timer(inp, stcb, net)) {
1702 /* no need to unlock on tcb its gone */
1705 /* We do output but not here */
1708 case SCTP_TIMER_TYPE_RECV:
1709 if ((stcb == NULL) || (inp == NULL)) {
1712 SCTP_STAT_INCR(sctps_timosack);
1713 stcb->asoc.timosack++;
1714 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1715 #ifdef SCTP_AUDITING_ENABLED
1716 sctp_auditing(4, inp, stcb, net);
1718 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1720 case SCTP_TIMER_TYPE_SHUTDOWN:
1721 if ((stcb == NULL) || (inp == NULL)) {
1724 if (sctp_shutdown_timer(inp, stcb, net)) {
1725 /* no need to unlock on tcb its gone */
1728 SCTP_STAT_INCR(sctps_timoshutdown);
1729 stcb->asoc.timoshutdown++;
1730 #ifdef SCTP_AUDITING_ENABLED
1731 sctp_auditing(4, inp, stcb, net);
1733 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1735 case SCTP_TIMER_TYPE_HEARTBEAT:
1736 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1739 SCTP_STAT_INCR(sctps_timoheartbeat);
1740 stcb->asoc.timoheartbeat++;
1741 if (sctp_heartbeat_timer(inp, stcb, net)) {
1742 /* no need to unlock on tcb its gone */
1745 #ifdef SCTP_AUDITING_ENABLED
1746 sctp_auditing(4, inp, stcb, net);
1748 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1749 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1750 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1753 case SCTP_TIMER_TYPE_COOKIE:
1754 if ((stcb == NULL) || (inp == NULL)) {
1757 if (sctp_cookie_timer(inp, stcb, net)) {
1758 /* no need to unlock on tcb its gone */
1761 SCTP_STAT_INCR(sctps_timocookie);
1762 stcb->asoc.timocookie++;
1763 #ifdef SCTP_AUDITING_ENABLED
1764 sctp_auditing(4, inp, stcb, net);
1767 * We consider T3 and Cookie timer pretty much the same with
1768 * respect to where from in chunk_output.
1770 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1772 case SCTP_TIMER_TYPE_NEWCOOKIE:
1780 SCTP_STAT_INCR(sctps_timosecret);
1781 (void)SCTP_GETTIME_TIMEVAL(&tv);
1782 SCTP_INP_WLOCK(inp);
1783 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1784 inp->sctp_ep.last_secret_number =
1785 inp->sctp_ep.current_secret_number;
1786 inp->sctp_ep.current_secret_number++;
1787 if (inp->sctp_ep.current_secret_number >=
1788 SCTP_HOW_MANY_SECRETS) {
1789 inp->sctp_ep.current_secret_number = 0;
1791 secret = (int)inp->sctp_ep.current_secret_number;
1792 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1793 inp->sctp_ep.secret_key[secret][i] =
1794 sctp_select_initial_TSN(&inp->sctp_ep);
1796 SCTP_INP_WUNLOCK(inp);
1797 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1801 case SCTP_TIMER_TYPE_PATHMTURAISE:
1802 if ((stcb == NULL) || (inp == NULL)) {
1805 SCTP_STAT_INCR(sctps_timopathmtu);
1806 sctp_pathmtu_timer(inp, stcb, net);
1809 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1810 if ((stcb == NULL) || (inp == NULL)) {
1813 if (sctp_shutdownack_timer(inp, stcb, net)) {
1814 /* no need to unlock on tcb its gone */
1817 SCTP_STAT_INCR(sctps_timoshutdownack);
1818 stcb->asoc.timoshutdownack++;
1819 #ifdef SCTP_AUDITING_ENABLED
1820 sctp_auditing(4, inp, stcb, net);
1822 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1824 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1825 if ((stcb == NULL) || (inp == NULL)) {
1828 SCTP_STAT_INCR(sctps_timoshutdownguard);
1829 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
1830 "Shutdown guard timer expired");
1831 sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
1832 /* no need to unlock on tcb its gone */
1835 case SCTP_TIMER_TYPE_STRRESET:
1836 if ((stcb == NULL) || (inp == NULL)) {
1839 if (sctp_strreset_timer(inp, stcb, net)) {
1840 /* no need to unlock on tcb its gone */
1843 SCTP_STAT_INCR(sctps_timostrmrst);
1844 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1846 case SCTP_TIMER_TYPE_ASCONF:
1847 if ((stcb == NULL) || (inp == NULL)) {
1850 if (sctp_asconf_timer(inp, stcb, net)) {
1851 /* no need to unlock on tcb its gone */
1854 SCTP_STAT_INCR(sctps_timoasconf);
1855 #ifdef SCTP_AUDITING_ENABLED
1856 sctp_auditing(4, inp, stcb, net);
1858 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1860 case SCTP_TIMER_TYPE_PRIM_DELETED:
1861 if ((stcb == NULL) || (inp == NULL)) {
1864 sctp_delete_prim_timer(inp, stcb, net);
1865 SCTP_STAT_INCR(sctps_timodelprim);
1868 case SCTP_TIMER_TYPE_AUTOCLOSE:
1869 if ((stcb == NULL) || (inp == NULL)) {
1872 SCTP_STAT_INCR(sctps_timoautoclose);
1873 sctp_autoclose_timer(inp, stcb, net);
1874 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1877 case SCTP_TIMER_TYPE_ASOCKILL:
1878 if ((stcb == NULL) || (inp == NULL)) {
1881 SCTP_STAT_INCR(sctps_timoassockill);
1882 /* Can we free it yet? */
1883 SCTP_INP_DECR_REF(inp);
1884 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
1885 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1886 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1887 so = SCTP_INP_SO(inp);
1888 atomic_add_int(&stcb->asoc.refcnt, 1);
1889 SCTP_TCB_UNLOCK(stcb);
1890 SCTP_SOCKET_LOCK(so, 1);
1891 SCTP_TCB_LOCK(stcb);
1892 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1894 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
1895 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1896 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1897 SCTP_SOCKET_UNLOCK(so, 1);
1900 * free asoc, always unlocks (or destroy's) so prevent
1901 * duplicate unlock or unlock of a free mtx :-0
1905 case SCTP_TIMER_TYPE_INPKILL:
1906 SCTP_STAT_INCR(sctps_timoinpkill);
1911 * special case, take away our increment since WE are the
1914 SCTP_INP_DECR_REF(inp);
1915 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
1916 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1917 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1918 SCTP_CALLED_FROM_INPKILL_TIMER);
1922 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1926 #ifdef SCTP_AUDITING_ENABLED
1927 sctp_audit_log(0xF1, (uint8_t) type);
1929 sctp_auditing(5, inp, stcb, net);
1931 if ((did_output) && stcb) {
1933 * Now we need to clean up the control chunk chain if an
1934 * ECNE is on it. It must be marked as UNSENT again so next
1935 * call will continue to send it until such time that we get
1936 * a CWR, to remove it. It is, however, less likely that we
1937 * will find a ecn echo on the chain though.
1939 sctp_fix_ecn_echo(&stcb->asoc);
1943 SCTP_TCB_UNLOCK(stcb);
1947 SCTP_INP_DECR_REF(inp);
1950 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type);
1955 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1956 struct sctp_nets *net)
1959 struct sctp_timer *tmr;
1961 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1966 SCTP_TCB_LOCK_ASSERT(stcb);
1969 case SCTP_TIMER_TYPE_ZERO_COPY:
1970 tmr = &inp->sctp_ep.zero_copy_timer;
1971 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1973 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1974 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1975 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1977 case SCTP_TIMER_TYPE_ADDR_WQ:
1978 /* Only 1 tick away :-) */
1979 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1980 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1982 case SCTP_TIMER_TYPE_SEND:
1983 /* Here we use the RTO timer */
1987 if ((stcb == NULL) || (net == NULL)) {
1990 tmr = &net->rxt_timer;
1991 if (net->RTO == 0) {
1992 rto_val = stcb->asoc.initial_rto;
1996 to_ticks = MSEC_TO_TICKS(rto_val);
1999 case SCTP_TIMER_TYPE_INIT:
2001 * Here we use the INIT timer default usually about 1
2004 if ((stcb == NULL) || (net == NULL)) {
2007 tmr = &net->rxt_timer;
2008 if (net->RTO == 0) {
2009 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2011 to_ticks = MSEC_TO_TICKS(net->RTO);
2014 case SCTP_TIMER_TYPE_RECV:
2016 * Here we use the Delayed-Ack timer value from the inp
2017 * ususually about 200ms.
2022 tmr = &stcb->asoc.dack_timer;
2023 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
2025 case SCTP_TIMER_TYPE_SHUTDOWN:
2026 /* Here we use the RTO of the destination. */
2027 if ((stcb == NULL) || (net == NULL)) {
2030 if (net->RTO == 0) {
2031 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2033 to_ticks = MSEC_TO_TICKS(net->RTO);
2035 tmr = &net->rxt_timer;
2037 case SCTP_TIMER_TYPE_HEARTBEAT:
2039 * the net is used here so that we can add in the RTO. Even
2040 * though we use a different timer. We also add the HB timer
2041 * PLUS a random jitter.
2043 if ((stcb == NULL) || (net == NULL)) {
2049 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2050 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2053 if (net->RTO == 0) {
2054 to_ticks = stcb->asoc.initial_rto;
2056 to_ticks = net->RTO;
2058 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2059 jitter = rndval % to_ticks;
2060 if (jitter >= (to_ticks >> 1)) {
2061 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
2063 to_ticks = to_ticks - jitter;
2065 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2066 !(net->dest_state & SCTP_ADDR_PF)) {
2067 to_ticks += net->heart_beat_delay;
2070 * Now we must convert the to_ticks that are now in
2073 to_ticks = MSEC_TO_TICKS(to_ticks);
2074 tmr = &net->hb_timer;
2077 case SCTP_TIMER_TYPE_COOKIE:
2079 * Here we can use the RTO timer from the network since one
2080 * RTT was compelete. If a retran happened then we will be
2081 * using the RTO initial value.
2083 if ((stcb == NULL) || (net == NULL)) {
2086 if (net->RTO == 0) {
2087 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2089 to_ticks = MSEC_TO_TICKS(net->RTO);
2091 tmr = &net->rxt_timer;
2093 case SCTP_TIMER_TYPE_NEWCOOKIE:
2095 * nothing needed but the endpoint here ususually about 60
2098 tmr = &inp->sctp_ep.signature_change;
2099 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2101 case SCTP_TIMER_TYPE_ASOCKILL:
2105 tmr = &stcb->asoc.strreset_timer;
2106 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2108 case SCTP_TIMER_TYPE_INPKILL:
2110 * The inp is setup to die. We re-use the signature_chage
2111 * timer since that has stopped and we are in the GONE
2114 tmr = &inp->sctp_ep.signature_change;
2115 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2117 case SCTP_TIMER_TYPE_PATHMTURAISE:
2119 * Here we use the value found in the EP for PMTU ususually
2122 if ((stcb == NULL) || (net == NULL)) {
2125 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2128 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2129 tmr = &net->pmtu_timer;
2131 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2132 /* Here we use the RTO of the destination */
2133 if ((stcb == NULL) || (net == NULL)) {
2136 if (net->RTO == 0) {
2137 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2139 to_ticks = MSEC_TO_TICKS(net->RTO);
2141 tmr = &net->rxt_timer;
2143 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2145 * Here we use the endpoints shutdown guard timer usually
2151 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2152 to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto);
2154 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2156 tmr = &stcb->asoc.shut_guard_timer;
2158 case SCTP_TIMER_TYPE_STRRESET:
2160 * Here the timer comes from the stcb but its value is from
2163 if ((stcb == NULL) || (net == NULL)) {
2166 if (net->RTO == 0) {
2167 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2169 to_ticks = MSEC_TO_TICKS(net->RTO);
2171 tmr = &stcb->asoc.strreset_timer;
2173 case SCTP_TIMER_TYPE_ASCONF:
2175 * Here the timer comes from the stcb but its value is from
2178 if ((stcb == NULL) || (net == NULL)) {
2181 if (net->RTO == 0) {
2182 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2184 to_ticks = MSEC_TO_TICKS(net->RTO);
2186 tmr = &stcb->asoc.asconf_timer;
2188 case SCTP_TIMER_TYPE_PRIM_DELETED:
2189 if ((stcb == NULL) || (net != NULL)) {
2192 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2193 tmr = &stcb->asoc.delete_prim_timer;
2195 case SCTP_TIMER_TYPE_AUTOCLOSE:
2199 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2201 * Really an error since stcb is NOT set to
2206 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2207 tmr = &stcb->asoc.autoclose_timer;
2210 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2215 if ((to_ticks <= 0) || (tmr == NULL)) {
2216 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2217 __func__, t_type, to_ticks, (void *)tmr);
2220 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2222 * we do NOT allow you to have it already running. if it is
2223 * we leave the current one up unchanged
2227 /* At this point we can proceed */
2228 if (t_type == SCTP_TIMER_TYPE_SEND) {
2229 stcb->asoc.num_send_timers_up++;
2231 tmr->stopped_from = 0;
2233 tmr->ep = (void *)inp;
2234 tmr->tcb = (void *)stcb;
2235 tmr->net = (void *)net;
2236 tmr->self = (void *)tmr;
2237 tmr->vnet = (void *)curvnet;
2238 tmr->ticks = sctp_get_tick_count();
2239 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2244 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2245 struct sctp_nets *net, uint32_t from)
2247 struct sctp_timer *tmr;
2249 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2255 SCTP_TCB_LOCK_ASSERT(stcb);
2258 case SCTP_TIMER_TYPE_ZERO_COPY:
2259 tmr = &inp->sctp_ep.zero_copy_timer;
2261 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2262 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2264 case SCTP_TIMER_TYPE_ADDR_WQ:
2265 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2267 case SCTP_TIMER_TYPE_SEND:
2268 if ((stcb == NULL) || (net == NULL)) {
2271 tmr = &net->rxt_timer;
2273 case SCTP_TIMER_TYPE_INIT:
2274 if ((stcb == NULL) || (net == NULL)) {
2277 tmr = &net->rxt_timer;
2279 case SCTP_TIMER_TYPE_RECV:
2283 tmr = &stcb->asoc.dack_timer;
2285 case SCTP_TIMER_TYPE_SHUTDOWN:
2286 if ((stcb == NULL) || (net == NULL)) {
2289 tmr = &net->rxt_timer;
2291 case SCTP_TIMER_TYPE_HEARTBEAT:
2292 if ((stcb == NULL) || (net == NULL)) {
2295 tmr = &net->hb_timer;
2297 case SCTP_TIMER_TYPE_COOKIE:
2298 if ((stcb == NULL) || (net == NULL)) {
2301 tmr = &net->rxt_timer;
2303 case SCTP_TIMER_TYPE_NEWCOOKIE:
2304 /* nothing needed but the endpoint here */
2305 tmr = &inp->sctp_ep.signature_change;
2307 * We re-use the newcookie timer for the INP kill timer. We
2308 * must assure that we do not kill it by accident.
2311 case SCTP_TIMER_TYPE_ASOCKILL:
2313 * Stop the asoc kill timer.
2318 tmr = &stcb->asoc.strreset_timer;
2321 case SCTP_TIMER_TYPE_INPKILL:
2323 * The inp is setup to die. We re-use the signature_chage
2324 * timer since that has stopped and we are in the GONE
2327 tmr = &inp->sctp_ep.signature_change;
2329 case SCTP_TIMER_TYPE_PATHMTURAISE:
2330 if ((stcb == NULL) || (net == NULL)) {
2333 tmr = &net->pmtu_timer;
2335 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2336 if ((stcb == NULL) || (net == NULL)) {
2339 tmr = &net->rxt_timer;
2341 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2345 tmr = &stcb->asoc.shut_guard_timer;
2347 case SCTP_TIMER_TYPE_STRRESET:
2351 tmr = &stcb->asoc.strreset_timer;
2353 case SCTP_TIMER_TYPE_ASCONF:
2357 tmr = &stcb->asoc.asconf_timer;
2359 case SCTP_TIMER_TYPE_PRIM_DELETED:
2363 tmr = &stcb->asoc.delete_prim_timer;
2365 case SCTP_TIMER_TYPE_AUTOCLOSE:
2369 tmr = &stcb->asoc.autoclose_timer;
2372 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2379 if ((tmr->type != t_type) && tmr->type) {
2381 * Ok we have a timer that is under joint use. Cookie timer
2382 * per chance with the SEND timer. We therefore are NOT
2383 * running the timer that the caller wants stopped. So just
2388 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2389 stcb->asoc.num_send_timers_up--;
2390 if (stcb->asoc.num_send_timers_up < 0) {
2391 stcb->asoc.num_send_timers_up = 0;
2395 tmr->stopped_from = from;
2396 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2401 sctp_calculate_len(struct mbuf *m)
2408 tlen += SCTP_BUF_LEN(at);
2409 at = SCTP_BUF_NEXT(at);
2415 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2416 struct sctp_association *asoc, uint32_t mtu)
2419 * Reset the P-MTU size on this association, this involves changing
2420 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2421 * allow the DF flag to be cleared.
2423 struct sctp_tmit_chunk *chk;
2424 unsigned int eff_mtu, ovh;
2426 asoc->smallest_mtu = mtu;
2427 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2428 ovh = SCTP_MIN_OVERHEAD;
2430 ovh = SCTP_MIN_V4_OVERHEAD;
2432 eff_mtu = mtu - ovh;
2433 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2434 if (chk->send_size > eff_mtu) {
2435 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2438 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2439 if (chk->send_size > eff_mtu) {
2440 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2447 * given an association and starting time of the current RTT period return
2448 * RTO in number of msecs net should point to the current network
2452 sctp_calculate_rto(struct sctp_tcb *stcb,
2453 struct sctp_association *asoc,
2454 struct sctp_nets *net,
2455 struct timeval *told,
2456 int safe, int rtt_from_sack)
2459 * given an association and the starting time of the current RTT
2460 * period (in value1/value2) return RTO in number of msecs.
2462 int32_t rtt; /* RTT in ms */
2464 int first_measure = 0;
2465 struct timeval now, then, *old;
2467 /* Copy it out for sparc64 */
2468 if (safe == sctp_align_unsafe_makecopy) {
2470 memcpy(&then, told, sizeof(struct timeval));
2471 } else if (safe == sctp_align_safe_nocopy) {
2475 SCTP_PRINTF("Huh, bad rto calc call\n");
2478 /************************/
2479 /* 1. calculate new RTT */
2480 /************************/
2481 /* get the current time */
2482 if (stcb->asoc.use_precise_time) {
2483 (void)SCTP_GETPTIME_TIMEVAL(&now);
2485 (void)SCTP_GETTIME_TIMEVAL(&now);
2487 timevalsub(&now, old);
2488 /* store the current RTT in us */
2489 net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec +
2490 (uint64_t) now.tv_usec;
2492 /* compute rtt in ms */
2493 rtt = (int32_t) (net->rtt / 1000);
2494 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2496 * Tell the CC module that a new update has just occurred
2499 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2502 * Do we need to determine the lan? We do this only on sacks i.e.
2503 * RTT being determined from data not non-data (HB/INIT->INITACK).
2505 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2506 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2507 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2508 net->lan_type = SCTP_LAN_INTERNET;
2510 net->lan_type = SCTP_LAN_LOCAL;
2513 /***************************/
2514 /* 2. update RTTVAR & SRTT */
2515 /***************************/
2517 * Compute the scaled average lastsa and the
2518 * scaled variance lastsv as described in van Jacobson
2519 * Paper "Congestion Avoidance and Control", Annex A.
2521 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2522 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2524 if (net->RTO_measured) {
2525 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2530 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2532 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2533 rto_logging(net, SCTP_LOG_RTTVAR);
2536 /* First RTO measurment */
2537 net->RTO_measured = 1;
2539 net->lastsa = rtt << SCTP_RTT_SHIFT;
2540 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2541 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2542 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2545 if (net->lastsv == 0) {
2546 net->lastsv = SCTP_CLOCK_GRANULARITY;
2548 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2549 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2550 (stcb->asoc.sat_network_lockout == 0)) {
2551 stcb->asoc.sat_network = 1;
2552 } else if ((!first_measure) && stcb->asoc.sat_network) {
2553 stcb->asoc.sat_network = 0;
2554 stcb->asoc.sat_network_lockout = 1;
2556 /* bound it, per C6/C7 in Section 5.3.1 */
2557 if (new_rto < stcb->asoc.minrto) {
2558 new_rto = stcb->asoc.minrto;
2560 if (new_rto > stcb->asoc.maxrto) {
2561 new_rto = stcb->asoc.maxrto;
2563 /* we are now returning the RTO */
2568 * return a pointer to a contiguous piece of data from the given mbuf chain
2569 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2570 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2571 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2574 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
2580 if ((off < 0) || (len <= 0))
2583 /* find the desired start location */
2584 while ((m != NULL) && (off > 0)) {
2585 if (off < SCTP_BUF_LEN(m))
2587 off -= SCTP_BUF_LEN(m);
2588 m = SCTP_BUF_NEXT(m);
2593 /* is the current mbuf large enough (eg. contiguous)? */
2594 if ((SCTP_BUF_LEN(m) - off) >= len) {
2595 return (mtod(m, caddr_t)+off);
2597 /* else, it spans more than one mbuf, so save a temp copy... */
2598 while ((m != NULL) && (len > 0)) {
2599 count = min(SCTP_BUF_LEN(m) - off, len);
2600 bcopy(mtod(m, caddr_t)+off, ptr, count);
2604 m = SCTP_BUF_NEXT(m);
2606 if ((m == NULL) && (len > 0))
2609 return ((caddr_t)in_ptr);
2615 struct sctp_paramhdr *
2616 sctp_get_next_param(struct mbuf *m,
2618 struct sctp_paramhdr *pull,
2621 /* This just provides a typed signature to Peter's Pull routine */
2622 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2628 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2630 struct mbuf *m_last;
2636 if (padlen <= M_TRAILINGSPACE(m)) {
2638 * The easy way. We hope the majority of the time we hit
2643 /* Hard way we must grow the mbuf chain */
2644 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2645 if (m_last == NULL) {
2648 SCTP_BUF_LEN(m_last) = 0;
2649 SCTP_BUF_NEXT(m_last) = NULL;
2650 SCTP_BUF_NEXT(m) = m_last;
2652 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2653 SCTP_BUF_LEN(m_last) += padlen;
2654 memset(dp, 0, padlen);
2659 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2661 /* find the last mbuf in chain and pad it */
2664 if (last_mbuf != NULL) {
2665 return (sctp_add_pad_tombuf(last_mbuf, padval));
2667 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2668 if (SCTP_BUF_NEXT(m_at) == NULL) {
2669 return (sctp_add_pad_tombuf(m_at, padval));
2677 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2678 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2679 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2684 struct mbuf *m_notify;
2685 struct sctp_assoc_change *sac;
2686 struct sctp_queued_to_read *control;
2687 unsigned int notif_len;
2691 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2699 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2700 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2701 if (abort != NULL) {
2702 abort_len = ntohs(abort->ch.chunk_length);
2706 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2707 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2708 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2709 notif_len += abort_len;
2711 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2712 if (m_notify == NULL) {
2713 /* Retry with smaller value. */
2714 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2715 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2716 if (m_notify == NULL) {
2720 SCTP_BUF_NEXT(m_notify) = NULL;
2721 sac = mtod(m_notify, struct sctp_assoc_change *);
2722 memset(sac, 0, notif_len);
2723 sac->sac_type = SCTP_ASSOC_CHANGE;
2725 sac->sac_length = sizeof(struct sctp_assoc_change);
2726 sac->sac_state = state;
2727 sac->sac_error = error;
2728 /* XXX verify these stream counts */
2729 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2730 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2731 sac->sac_assoc_id = sctp_get_associd(stcb);
2732 if (notif_len > sizeof(struct sctp_assoc_change)) {
2733 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2735 if (stcb->asoc.prsctp_supported == 1) {
2736 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2738 if (stcb->asoc.auth_supported == 1) {
2739 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2741 if (stcb->asoc.asconf_supported == 1) {
2742 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2744 if (stcb->asoc.idata_supported == 1) {
2745 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
2747 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2748 if (stcb->asoc.reconfig_supported == 1) {
2749 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2751 sac->sac_length += i;
2752 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2753 memcpy(sac->sac_info, abort, abort_len);
2754 sac->sac_length += abort_len;
2757 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2758 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2759 0, 0, stcb->asoc.context, 0, 0, 0,
2761 if (control != NULL) {
2762 control->length = SCTP_BUF_LEN(m_notify);
2763 /* not that we need this */
2764 control->tail_mbuf = m_notify;
2765 control->spec_flags = M_NOTIFICATION;
2766 sctp_add_to_readq(stcb->sctp_ep, stcb,
2768 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2771 sctp_m_freem(m_notify);
2775 * For 1-to-1 style sockets, we send up and error when an ABORT
2779 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2780 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2781 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2782 SOCK_LOCK(stcb->sctp_socket);
2784 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2785 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2786 stcb->sctp_socket->so_error = ECONNREFUSED;
2788 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2789 stcb->sctp_socket->so_error = ECONNRESET;
2792 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2793 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2794 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2795 stcb->sctp_socket->so_error = ETIMEDOUT;
2797 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2798 stcb->sctp_socket->so_error = ECONNABORTED;
2802 /* Wake ANY sleepers */
2803 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2804 so = SCTP_INP_SO(stcb->sctp_ep);
2806 atomic_add_int(&stcb->asoc.refcnt, 1);
2807 SCTP_TCB_UNLOCK(stcb);
2808 SCTP_SOCKET_LOCK(so, 1);
2809 SCTP_TCB_LOCK(stcb);
2810 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2811 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2812 SCTP_SOCKET_UNLOCK(so, 1);
2817 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2818 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2819 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2820 socantrcvmore_locked(stcb->sctp_socket);
2822 sorwakeup(stcb->sctp_socket);
2823 sowwakeup(stcb->sctp_socket);
2824 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2826 SCTP_SOCKET_UNLOCK(so, 1);
2832 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2833 struct sockaddr *sa, uint32_t error, int so_locked
2834 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2839 struct mbuf *m_notify;
2840 struct sctp_paddr_change *spc;
2841 struct sctp_queued_to_read *control;
2843 if ((stcb == NULL) ||
2844 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2845 /* event not enabled */
2848 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2849 if (m_notify == NULL)
2851 SCTP_BUF_LEN(m_notify) = 0;
2852 spc = mtod(m_notify, struct sctp_paddr_change *);
2853 memset(spc, 0, sizeof(struct sctp_paddr_change));
2854 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2856 spc->spc_length = sizeof(struct sctp_paddr_change);
2857 switch (sa->sa_family) {
2861 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
2862 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
2863 (struct sockaddr_in6 *)&spc->spc_aaddr);
2865 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2868 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2875 struct sockaddr_in6 *sin6;
2877 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2879 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2880 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2881 if (sin6->sin6_scope_id == 0) {
2882 /* recover scope_id for user */
2883 (void)sa6_recoverscope(sin6);
2885 /* clear embedded scope_id for user */
2886 in6_clearscope(&sin6->sin6_addr);
2896 spc->spc_state = state;
2897 spc->spc_error = error;
2898 spc->spc_assoc_id = sctp_get_associd(stcb);
2900 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2901 SCTP_BUF_NEXT(m_notify) = NULL;
2903 /* append to socket */
2904 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2905 0, 0, stcb->asoc.context, 0, 0, 0,
2907 if (control == NULL) {
2909 sctp_m_freem(m_notify);
2912 control->length = SCTP_BUF_LEN(m_notify);
2913 control->spec_flags = M_NOTIFICATION;
2914 /* not that we need this */
2915 control->tail_mbuf = m_notify;
2916 sctp_add_to_readq(stcb->sctp_ep, stcb,
2918 &stcb->sctp_socket->so_rcv, 1,
2919 SCTP_READ_LOCK_NOT_HELD,
2925 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2926 struct sctp_tmit_chunk *chk, int so_locked
2927 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2932 struct mbuf *m_notify;
2933 struct sctp_send_failed *ssf;
2934 struct sctp_send_failed_event *ssfe;
2935 struct sctp_queued_to_read *control;
2938 if ((stcb == NULL) ||
2939 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2940 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2941 /* event not enabled */
2944 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2945 length = sizeof(struct sctp_send_failed_event);
2947 length = sizeof(struct sctp_send_failed);
2949 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2950 if (m_notify == NULL)
2953 SCTP_BUF_LEN(m_notify) = 0;
2954 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2955 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2956 memset(ssfe, 0, length);
2957 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2959 ssfe->ssfe_flags = SCTP_DATA_SENT;
2961 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2963 length += chk->send_size;
2964 length -= sizeof(struct sctp_data_chunk);
2965 ssfe->ssfe_length = length;
2966 ssfe->ssfe_error = error;
2967 /* not exactly what the user sent in, but should be close :) */
2968 ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number;
2969 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2970 ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype;
2971 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2972 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2973 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2974 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2976 ssf = mtod(m_notify, struct sctp_send_failed *);
2977 memset(ssf, 0, length);
2978 ssf->ssf_type = SCTP_SEND_FAILED;
2980 ssf->ssf_flags = SCTP_DATA_SENT;
2982 ssf->ssf_flags = SCTP_DATA_UNSENT;
2984 length += chk->send_size;
2985 length -= sizeof(struct sctp_data_chunk);
2986 ssf->ssf_length = length;
2987 ssf->ssf_error = error;
2988 /* not exactly what the user sent in, but should be close :) */
2989 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2990 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2991 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2992 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2993 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2994 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2995 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2996 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2997 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
3001 * trim off the sctp chunk header(it should be there)
3003 if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
3004 m_adj(chk->data, sizeof(struct sctp_data_chunk));
3005 sctp_mbuf_crush(chk->data);
3006 chk->send_size -= sizeof(struct sctp_data_chunk);
3009 SCTP_BUF_NEXT(m_notify) = chk->data;
3010 /* Steal off the mbuf */
3013 * For this case, we check the actual socket buffer, since the assoc
3014 * is going away we don't want to overfill the socket buffer for a
3017 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3018 sctp_m_freem(m_notify);
3021 /* append to socket */
3022 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3023 0, 0, stcb->asoc.context, 0, 0, 0,
3025 if (control == NULL) {
3027 sctp_m_freem(m_notify);
3030 control->spec_flags = M_NOTIFICATION;
3031 sctp_add_to_readq(stcb->sctp_ep, stcb,
3033 &stcb->sctp_socket->so_rcv, 1,
3034 SCTP_READ_LOCK_NOT_HELD,
3040 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3041 struct sctp_stream_queue_pending *sp, int so_locked
3042 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3047 struct mbuf *m_notify;
3048 struct sctp_send_failed *ssf;
3049 struct sctp_send_failed_event *ssfe;
3050 struct sctp_queued_to_read *control;
3053 if ((stcb == NULL) ||
3054 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3055 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3056 /* event not enabled */
3059 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3060 length = sizeof(struct sctp_send_failed_event);
3062 length = sizeof(struct sctp_send_failed);
3064 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
3065 if (m_notify == NULL) {
3069 SCTP_BUF_LEN(m_notify) = 0;
3070 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3071 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3072 memset(ssfe, 0, length);
3073 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3074 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3075 length += sp->length;
3076 ssfe->ssfe_length = length;
3077 ssfe->ssfe_error = error;
3078 /* not exactly what the user sent in, but should be close :) */
3079 ssfe->ssfe_info.snd_sid = sp->stream;
3080 if (sp->some_taken) {
3081 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3083 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3085 ssfe->ssfe_info.snd_ppid = sp->ppid;
3086 ssfe->ssfe_info.snd_context = sp->context;
3087 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3088 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3089 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
3091 ssf = mtod(m_notify, struct sctp_send_failed *);
3092 memset(ssf, 0, length);
3093 ssf->ssf_type = SCTP_SEND_FAILED;
3094 ssf->ssf_flags = SCTP_DATA_UNSENT;
3095 length += sp->length;
3096 ssf->ssf_length = length;
3097 ssf->ssf_error = error;
3098 /* not exactly what the user sent in, but should be close :) */
3099 ssf->ssf_info.sinfo_stream = sp->stream;
3100 ssf->ssf_info.sinfo_ssn = 0;
3101 if (sp->some_taken) {
3102 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3104 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3106 ssf->ssf_info.sinfo_ppid = sp->ppid;
3107 ssf->ssf_info.sinfo_context = sp->context;
3108 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3109 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3110 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
3112 SCTP_BUF_NEXT(m_notify) = sp->data;
3114 /* Steal off the mbuf */
3117 * For this case, we check the actual socket buffer, since the assoc
3118 * is going away we don't want to overfill the socket buffer for a
3121 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3122 sctp_m_freem(m_notify);
3125 /* append to socket */
3126 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3127 0, 0, stcb->asoc.context, 0, 0, 0,
3129 if (control == NULL) {
3131 sctp_m_freem(m_notify);
3134 control->spec_flags = M_NOTIFICATION;
3135 sctp_add_to_readq(stcb->sctp_ep, stcb,
3137 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3143 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3145 struct mbuf *m_notify;
3146 struct sctp_adaptation_event *sai;
3147 struct sctp_queued_to_read *control;
3149 if ((stcb == NULL) ||
3150 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3151 /* event not enabled */
3154 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3155 if (m_notify == NULL)
3158 SCTP_BUF_LEN(m_notify) = 0;
3159 sai = mtod(m_notify, struct sctp_adaptation_event *);
3160 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3161 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3163 sai->sai_length = sizeof(struct sctp_adaptation_event);
3164 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3165 sai->sai_assoc_id = sctp_get_associd(stcb);
3167 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3168 SCTP_BUF_NEXT(m_notify) = NULL;
3170 /* append to socket */
3171 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3172 0, 0, stcb->asoc.context, 0, 0, 0,
3174 if (control == NULL) {
3176 sctp_m_freem(m_notify);
3179 control->length = SCTP_BUF_LEN(m_notify);
3180 control->spec_flags = M_NOTIFICATION;
3181 /* not that we need this */
3182 control->tail_mbuf = m_notify;
3183 sctp_add_to_readq(stcb->sctp_ep, stcb,
3185 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3188 /* This always must be called with the read-queue LOCKED in the INP */
3190 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3191 uint32_t val, int so_locked
3192 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3197 struct mbuf *m_notify;
3198 struct sctp_pdapi_event *pdapi;
3199 struct sctp_queued_to_read *control;
3202 if ((stcb == NULL) ||
3203 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3204 /* event not enabled */
3207 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3210 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3211 if (m_notify == NULL)
3214 SCTP_BUF_LEN(m_notify) = 0;
3215 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3216 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3217 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3218 pdapi->pdapi_flags = 0;
3219 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3220 pdapi->pdapi_indication = error;
3221 pdapi->pdapi_stream = (val >> 16);
3222 pdapi->pdapi_seq = (val & 0x0000ffff);
3223 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3225 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3226 SCTP_BUF_NEXT(m_notify) = NULL;
3227 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3228 0, 0, stcb->asoc.context, 0, 0, 0,
3230 if (control == NULL) {
3232 sctp_m_freem(m_notify);
3235 control->spec_flags = M_NOTIFICATION;
3236 control->length = SCTP_BUF_LEN(m_notify);
3237 /* not that we need this */
3238 control->tail_mbuf = m_notify;
3239 control->held_length = 0;
3240 control->length = 0;
3241 sb = &stcb->sctp_socket->so_rcv;
3242 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3243 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3245 sctp_sballoc(stcb, sb, m_notify);
3246 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3247 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3249 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3250 control->end_added = 1;
3251 if (stcb->asoc.control_pdapi)
3252 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3254 /* we really should not see this case */
3255 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3257 if (stcb->sctp_ep && stcb->sctp_socket) {
3258 /* This should always be the case */
3259 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3262 so = SCTP_INP_SO(stcb->sctp_ep);
3264 atomic_add_int(&stcb->asoc.refcnt, 1);
3265 SCTP_TCB_UNLOCK(stcb);
3266 SCTP_SOCKET_LOCK(so, 1);
3267 SCTP_TCB_LOCK(stcb);
3268 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3269 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3270 SCTP_SOCKET_UNLOCK(so, 1);
3275 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3276 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3278 SCTP_SOCKET_UNLOCK(so, 1);
3285 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3287 struct mbuf *m_notify;
3288 struct sctp_shutdown_event *sse;
3289 struct sctp_queued_to_read *control;
3292 * For TCP model AND UDP connected sockets we will send an error up
3293 * when an SHUTDOWN completes
3295 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3296 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3297 /* mark socket closed for read/write and wakeup! */
3298 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3301 so = SCTP_INP_SO(stcb->sctp_ep);
3302 atomic_add_int(&stcb->asoc.refcnt, 1);
3303 SCTP_TCB_UNLOCK(stcb);
3304 SCTP_SOCKET_LOCK(so, 1);
3305 SCTP_TCB_LOCK(stcb);
3306 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3307 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3308 SCTP_SOCKET_UNLOCK(so, 1);
3312 socantsendmore(stcb->sctp_socket);
3313 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3314 SCTP_SOCKET_UNLOCK(so, 1);
3317 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3318 /* event not enabled */
3321 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3322 if (m_notify == NULL)
3325 sse = mtod(m_notify, struct sctp_shutdown_event *);
3326 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3327 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3329 sse->sse_length = sizeof(struct sctp_shutdown_event);
3330 sse->sse_assoc_id = sctp_get_associd(stcb);
3332 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3333 SCTP_BUF_NEXT(m_notify) = NULL;
3335 /* append to socket */
3336 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3337 0, 0, stcb->asoc.context, 0, 0, 0,
3339 if (control == NULL) {
3341 sctp_m_freem(m_notify);
3344 control->spec_flags = M_NOTIFICATION;
3345 control->length = SCTP_BUF_LEN(m_notify);
3346 /* not that we need this */
3347 control->tail_mbuf = m_notify;
3348 sctp_add_to_readq(stcb->sctp_ep, stcb,
3350 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3354 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3356 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3361 struct mbuf *m_notify;
3362 struct sctp_sender_dry_event *event;
3363 struct sctp_queued_to_read *control;
3365 if ((stcb == NULL) ||
3366 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3367 /* event not enabled */
3370 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3371 if (m_notify == NULL) {
3375 SCTP_BUF_LEN(m_notify) = 0;
3376 event = mtod(m_notify, struct sctp_sender_dry_event *);
3377 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3378 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3379 event->sender_dry_flags = 0;
3380 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3381 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3383 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3384 SCTP_BUF_NEXT(m_notify) = NULL;
3386 /* append to socket */
3387 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3388 0, 0, stcb->asoc.context, 0, 0, 0,
3390 if (control == NULL) {
3392 sctp_m_freem(m_notify);
3395 control->length = SCTP_BUF_LEN(m_notify);
3396 control->spec_flags = M_NOTIFICATION;
3397 /* not that we need this */
3398 control->tail_mbuf = m_notify;
3399 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3400 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3405 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3407 struct mbuf *m_notify;
3408 struct sctp_queued_to_read *control;
3409 struct sctp_stream_change_event *stradd;
3411 if ((stcb == NULL) ||
3412 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3413 /* event not enabled */
3416 if ((stcb->asoc.peer_req_out) && flag) {
3417 /* Peer made the request, don't tell the local user */
3418 stcb->asoc.peer_req_out = 0;
3421 stcb->asoc.peer_req_out = 0;
3422 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3423 if (m_notify == NULL)
3426 SCTP_BUF_LEN(m_notify) = 0;
3427 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3428 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3429 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3430 stradd->strchange_flags = flag;
3431 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3432 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3433 stradd->strchange_instrms = numberin;
3434 stradd->strchange_outstrms = numberout;
3435 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3436 SCTP_BUF_NEXT(m_notify) = NULL;
3437 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3439 sctp_m_freem(m_notify);
3442 /* append to socket */
3443 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3444 0, 0, stcb->asoc.context, 0, 0, 0,
3446 if (control == NULL) {
3448 sctp_m_freem(m_notify);
3451 control->spec_flags = M_NOTIFICATION;
3452 control->length = SCTP_BUF_LEN(m_notify);
3453 /* not that we need this */
3454 control->tail_mbuf = m_notify;
3455 sctp_add_to_readq(stcb->sctp_ep, stcb,
3457 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3461 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3463 struct mbuf *m_notify;
3464 struct sctp_queued_to_read *control;
3465 struct sctp_assoc_reset_event *strasoc;
3467 if ((stcb == NULL) ||
3468 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3469 /* event not enabled */
3472 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3473 if (m_notify == NULL)
3476 SCTP_BUF_LEN(m_notify) = 0;
3477 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3478 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3479 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3480 strasoc->assocreset_flags = flag;
3481 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3482 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3483 strasoc->assocreset_local_tsn = sending_tsn;
3484 strasoc->assocreset_remote_tsn = recv_tsn;
3485 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3486 SCTP_BUF_NEXT(m_notify) = NULL;
3487 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3489 sctp_m_freem(m_notify);
3492 /* append to socket */
3493 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3494 0, 0, stcb->asoc.context, 0, 0, 0,
3496 if (control == NULL) {
3498 sctp_m_freem(m_notify);
3501 control->spec_flags = M_NOTIFICATION;
3502 control->length = SCTP_BUF_LEN(m_notify);
3503 /* not that we need this */
3504 control->tail_mbuf = m_notify;
3505 sctp_add_to_readq(stcb->sctp_ep, stcb,
3507 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3513 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3514 int number_entries, uint16_t * list, int flag)
3516 struct mbuf *m_notify;
3517 struct sctp_queued_to_read *control;
3518 struct sctp_stream_reset_event *strreset;
3521 if ((stcb == NULL) ||
3522 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3523 /* event not enabled */
3526 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3527 if (m_notify == NULL)
3530 SCTP_BUF_LEN(m_notify) = 0;
3531 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3532 if (len > M_TRAILINGSPACE(m_notify)) {
3533 /* never enough room */
3534 sctp_m_freem(m_notify);
3537 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3538 memset(strreset, 0, len);
3539 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3540 strreset->strreset_flags = flag;
3541 strreset->strreset_length = len;
3542 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3543 if (number_entries) {
3546 for (i = 0; i < number_entries; i++) {
3547 strreset->strreset_stream_list[i] = ntohs(list[i]);
3550 SCTP_BUF_LEN(m_notify) = len;
3551 SCTP_BUF_NEXT(m_notify) = NULL;
3552 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3554 sctp_m_freem(m_notify);
3557 /* append to socket */
3558 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3559 0, 0, stcb->asoc.context, 0, 0, 0,
3561 if (control == NULL) {
3563 sctp_m_freem(m_notify);
3566 control->spec_flags = M_NOTIFICATION;
3567 control->length = SCTP_BUF_LEN(m_notify);
3568 /* not that we need this */
3569 control->tail_mbuf = m_notify;
3570 sctp_add_to_readq(stcb->sctp_ep, stcb,
3572 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3577 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3579 struct mbuf *m_notify;
3580 struct sctp_remote_error *sre;
3581 struct sctp_queued_to_read *control;
3582 unsigned int notif_len;
3585 if ((stcb == NULL) ||
3586 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3589 if (chunk != NULL) {
3590 chunk_len = ntohs(chunk->ch.chunk_length);
3594 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
3595 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3596 if (m_notify == NULL) {
3597 /* Retry with smaller value. */
3598 notif_len = (unsigned int)sizeof(struct sctp_remote_error);
3599 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3600 if (m_notify == NULL) {
3604 SCTP_BUF_NEXT(m_notify) = NULL;
3605 sre = mtod(m_notify, struct sctp_remote_error *);
3606 memset(sre, 0, notif_len);
3607 sre->sre_type = SCTP_REMOTE_ERROR;
3609 sre->sre_length = sizeof(struct sctp_remote_error);
3610 sre->sre_error = error;
3611 sre->sre_assoc_id = sctp_get_associd(stcb);
3612 if (notif_len > sizeof(struct sctp_remote_error)) {
3613 memcpy(sre->sre_data, chunk, chunk_len);
3614 sre->sre_length += chunk_len;
3616 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3617 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3618 0, 0, stcb->asoc.context, 0, 0, 0,
3620 if (control != NULL) {
3621 control->length = SCTP_BUF_LEN(m_notify);
3622 /* not that we need this */
3623 control->tail_mbuf = m_notify;
3624 control->spec_flags = M_NOTIFICATION;
3625 sctp_add_to_readq(stcb->sctp_ep, stcb,
3627 &stcb->sctp_socket->so_rcv, 1,
3628 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3630 sctp_m_freem(m_notify);
3636 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3637 uint32_t error, void *data, int so_locked
3638 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3643 if ((stcb == NULL) ||
3644 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3645 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3646 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3647 /* If the socket is gone we are out of here */
3650 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3653 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3654 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3655 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3656 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3657 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3658 /* Don't report these in front states */
3662 switch (notification) {
3663 case SCTP_NOTIFY_ASSOC_UP:
3664 if (stcb->asoc.assoc_up_sent == 0) {
3665 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3666 stcb->asoc.assoc_up_sent = 1;
3668 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3669 sctp_notify_adaptation_layer(stcb);
3671 if (stcb->asoc.auth_supported == 0) {
3672 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3676 case SCTP_NOTIFY_ASSOC_DOWN:
3677 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3679 case SCTP_NOTIFY_INTERFACE_DOWN:
3681 struct sctp_nets *net;
3683 net = (struct sctp_nets *)data;
3684 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3685 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3688 case SCTP_NOTIFY_INTERFACE_UP:
3690 struct sctp_nets *net;
3692 net = (struct sctp_nets *)data;
3693 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3694 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3697 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3699 struct sctp_nets *net;
3701 net = (struct sctp_nets *)data;
3702 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3703 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3706 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3707 sctp_notify_send_failed2(stcb, error,
3708 (struct sctp_stream_queue_pending *)data, so_locked);
3710 case SCTP_NOTIFY_SENT_DG_FAIL:
3711 sctp_notify_send_failed(stcb, 1, error,
3712 (struct sctp_tmit_chunk *)data, so_locked);
3714 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3715 sctp_notify_send_failed(stcb, 0, error,
3716 (struct sctp_tmit_chunk *)data, so_locked);
3718 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3722 val = *((uint32_t *) data);
3724 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3727 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3728 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3729 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3730 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3732 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3735 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3736 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3737 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3738 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3740 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3743 case SCTP_NOTIFY_ASSOC_RESTART:
3744 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3745 if (stcb->asoc.auth_supported == 0) {
3746 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3750 case SCTP_NOTIFY_STR_RESET_SEND:
3751 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN);
3753 case SCTP_NOTIFY_STR_RESET_RECV:
3754 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING);
3756 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3757 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3758 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3760 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3761 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3762 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3764 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3765 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3766 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3768 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3769 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3770 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3772 case SCTP_NOTIFY_ASCONF_ADD_IP:
3773 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3776 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3777 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3780 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3781 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3784 case SCTP_NOTIFY_PEER_SHUTDOWN:
3785 sctp_notify_shutdown_event(stcb);
3787 case SCTP_NOTIFY_AUTH_NEW_KEY:
3788 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3789 (uint16_t) (uintptr_t) data,
3792 case SCTP_NOTIFY_AUTH_FREE_KEY:
3793 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3794 (uint16_t) (uintptr_t) data,
3797 case SCTP_NOTIFY_NO_PEER_AUTH:
3798 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3799 (uint16_t) (uintptr_t) data,
3802 case SCTP_NOTIFY_SENDER_DRY:
3803 sctp_notify_sender_dry_event(stcb, so_locked);
3805 case SCTP_NOTIFY_REMOTE_ERROR:
3806 sctp_notify_remote_error(stcb, error, data);
3809 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3810 __func__, notification, notification);
3816 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3817 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3822 struct sctp_association *asoc;
3823 struct sctp_stream_out *outs;
3824 struct sctp_tmit_chunk *chk, *nchk;
3825 struct sctp_stream_queue_pending *sp, *nsp;
3832 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3833 /* already being freed */
3836 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3837 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3838 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3841 /* now through all the gunk freeing chunks */
3842 if (holds_lock == 0) {
3843 SCTP_TCB_SEND_LOCK(stcb);
3845 /* sent queue SHOULD be empty */
3846 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3847 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3848 asoc->sent_queue_cnt--;
3849 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3850 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3851 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3854 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3858 if (chk->data != NULL) {
3859 sctp_free_bufspace(stcb, asoc, chk, 1);
3860 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3861 error, chk, so_locked);
3863 sctp_m_freem(chk->data);
3867 sctp_free_a_chunk(stcb, chk, so_locked);
3868 /* sa_ignore FREED_MEMORY */
3870 /* pending send queue SHOULD be empty */
3871 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3872 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3873 asoc->send_queue_cnt--;
3874 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3875 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3878 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3881 if (chk->data != NULL) {
3882 sctp_free_bufspace(stcb, asoc, chk, 1);
3883 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3884 error, chk, so_locked);
3886 sctp_m_freem(chk->data);
3890 sctp_free_a_chunk(stcb, chk, so_locked);
3891 /* sa_ignore FREED_MEMORY */
3893 for (i = 0; i < asoc->streamoutcnt; i++) {
3894 /* For each stream */
3895 outs = &asoc->strmout[i];
3896 /* clean up any sends there */
3897 asoc->locked_on_sending = NULL;
3898 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3899 asoc->stream_queue_cnt--;
3900 TAILQ_REMOVE(&outs->outqueue, sp, next);
3901 sctp_free_spbufspace(stcb, asoc, sp);
3903 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3904 error, (void *)sp, so_locked);
3906 sctp_m_freem(sp->data);
3908 sp->tail_mbuf = NULL;
3913 sctp_free_remote_addr(sp->net);
3916 /* Free the chunk */
3917 sctp_free_a_strmoq(stcb, sp, so_locked);
3918 /* sa_ignore FREED_MEMORY */
3922 if (holds_lock == 0) {
3923 SCTP_TCB_SEND_UNLOCK(stcb);
3928 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3929 struct sctp_abort_chunk *abort, int so_locked
3930 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3938 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3939 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3940 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3941 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3943 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3944 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3945 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3948 /* Tell them we lost the asoc */
3949 sctp_report_all_outbound(stcb, error, 1, so_locked);
3951 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3953 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3958 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3959 struct mbuf *m, int iphlen,
3960 struct sockaddr *src, struct sockaddr *dst,
3961 struct sctphdr *sh, struct mbuf *op_err,
3962 uint8_t mflowtype, uint32_t mflowid,
3963 uint32_t vrf_id, uint16_t port)
3967 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3974 /* We have a TCB to abort, send notification too */
3975 vtag = stcb->asoc.peer_vtag;
3976 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3977 /* get the assoc vrf id and table id */
3978 vrf_id = stcb->asoc.vrf_id;
3979 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3981 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3982 mflowtype, mflowid, inp->fibnum,
3985 /* Ok, now lets free it */
3986 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3987 so = SCTP_INP_SO(inp);
3988 atomic_add_int(&stcb->asoc.refcnt, 1);
3989 SCTP_TCB_UNLOCK(stcb);
3990 SCTP_SOCKET_LOCK(so, 1);
3991 SCTP_TCB_LOCK(stcb);
3992 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3994 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3995 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3996 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3997 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3999 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4000 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
4001 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4002 SCTP_SOCKET_UNLOCK(so, 1);
4007 #ifdef SCTP_ASOCLOG_OF_TSNS
4009 sctp_print_out_track_log(struct sctp_tcb *stcb)
4014 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
4015 SCTP_PRINTF("IN bound TSN log-aaa\n");
4016 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4017 SCTP_PRINTF("None rcvd\n");
4020 if (stcb->asoc.tsn_in_wrapped) {
4021 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4022 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4023 stcb->asoc.in_tsnlog[i].tsn,
4024 stcb->asoc.in_tsnlog[i].strm,
4025 stcb->asoc.in_tsnlog[i].seq,
4026 stcb->asoc.in_tsnlog[i].flgs,
4027 stcb->asoc.in_tsnlog[i].sz);
4030 if (stcb->asoc.tsn_in_at) {
4031 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4032 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4033 stcb->asoc.in_tsnlog[i].tsn,
4034 stcb->asoc.in_tsnlog[i].strm,
4035 stcb->asoc.in_tsnlog[i].seq,
4036 stcb->asoc.in_tsnlog[i].flgs,
4037 stcb->asoc.in_tsnlog[i].sz);
4041 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4042 if ((stcb->asoc.tsn_out_at == 0) &&
4043 (stcb->asoc.tsn_out_wrapped == 0)) {
4044 SCTP_PRINTF("None sent\n");
4046 if (stcb->asoc.tsn_out_wrapped) {
4047 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4048 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4049 stcb->asoc.out_tsnlog[i].tsn,
4050 stcb->asoc.out_tsnlog[i].strm,
4051 stcb->asoc.out_tsnlog[i].seq,
4052 stcb->asoc.out_tsnlog[i].flgs,
4053 stcb->asoc.out_tsnlog[i].sz);
4056 if (stcb->asoc.tsn_out_at) {
4057 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4058 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4059 stcb->asoc.out_tsnlog[i].tsn,
4060 stcb->asoc.out_tsnlog[i].strm,
4061 stcb->asoc.out_tsnlog[i].seq,
4062 stcb->asoc.out_tsnlog[i].flgs,
4063 stcb->asoc.out_tsnlog[i].sz);
4072 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4073 struct mbuf *op_err,
4075 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4080 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4085 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4086 so = SCTP_INP_SO(inp);
4089 /* Got to have a TCB */
4090 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4091 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4092 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4093 SCTP_CALLED_DIRECTLY_NOCMPSET);
4098 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
4100 /* notify the ulp */
4101 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4102 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4104 /* notify the peer */
4105 sctp_send_abort_tcb(stcb, op_err, so_locked);
4106 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4107 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
4108 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4109 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4111 /* now free the asoc */
4112 #ifdef SCTP_ASOCLOG_OF_TSNS
4113 sctp_print_out_track_log(stcb);
4115 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4117 atomic_add_int(&stcb->asoc.refcnt, 1);
4118 SCTP_TCB_UNLOCK(stcb);
4119 SCTP_SOCKET_LOCK(so, 1);
4120 SCTP_TCB_LOCK(stcb);
4121 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4124 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4125 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4126 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4128 SCTP_SOCKET_UNLOCK(so, 1);
4134 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4135 struct sockaddr *src, struct sockaddr *dst,
4136 struct sctphdr *sh, struct sctp_inpcb *inp,
4138 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4139 uint32_t vrf_id, uint16_t port)
4141 struct sctp_chunkhdr *ch, chunk_buf;
4142 unsigned int chk_length;
4143 int contains_init_chunk;
4145 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4146 /* Generate a TO address for future reference */
4147 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4148 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4149 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4150 SCTP_CALLED_DIRECTLY_NOCMPSET);
4153 contains_init_chunk = 0;
4154 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4155 sizeof(*ch), (uint8_t *) & chunk_buf);
4156 while (ch != NULL) {
4157 chk_length = ntohs(ch->chunk_length);
4158 if (chk_length < sizeof(*ch)) {
4159 /* break to abort land */
4162 switch (ch->chunk_type) {
4164 contains_init_chunk = 1;
4166 case SCTP_PACKET_DROPPED:
4167 /* we don't respond to pkt-dropped */
4169 case SCTP_ABORT_ASSOCIATION:
4170 /* we don't respond with an ABORT to an ABORT */
4172 case SCTP_SHUTDOWN_COMPLETE:
4174 * we ignore it since we are not waiting for it and
4178 case SCTP_SHUTDOWN_ACK:
4179 sctp_send_shutdown_complete2(src, dst, sh,
4180 mflowtype, mflowid, fibnum,
4186 offset += SCTP_SIZE32(chk_length);
4187 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4188 sizeof(*ch), (uint8_t *) & chunk_buf);
4190 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4191 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4192 (contains_init_chunk == 0))) {
4193 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4194 mflowtype, mflowid, fibnum,
4200 * check the inbound datagram to make sure there is not an abort inside it,
4201 * if there is return 1, else return 0.
4204 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
4206 struct sctp_chunkhdr *ch;
4207 struct sctp_init_chunk *init_chk, chunk_buf;
4209 unsigned int chk_length;
4211 offset = iphlen + sizeof(struct sctphdr);
4212 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4213 (uint8_t *) & chunk_buf);
4214 while (ch != NULL) {
4215 chk_length = ntohs(ch->chunk_length);
4216 if (chk_length < sizeof(*ch)) {
4217 /* packet is probably corrupt */
4220 /* we seem to be ok, is it an abort? */
4221 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4222 /* yep, tell them */
4225 if (ch->chunk_type == SCTP_INITIATION) {
4226 /* need to update the Vtag */
4227 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4228 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
4229 if (init_chk != NULL) {
4230 *vtagfill = ntohl(init_chk->init.initiate_tag);
4233 /* Nope, move to the next chunk */
4234 offset += SCTP_SIZE32(chk_length);
4235 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4236 sizeof(*ch), (uint8_t *) & chunk_buf);
4242 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4243 * set (i.e. it's 0) so, create this function to compare link local scopes
4247 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4249 struct sockaddr_in6 a, b;
4255 if (a.sin6_scope_id == 0)
4256 if (sa6_recoverscope(&a)) {
4257 /* can't get scope, so can't match */
4260 if (b.sin6_scope_id == 0)
4261 if (sa6_recoverscope(&b)) {
4262 /* can't get scope, so can't match */
4265 if (a.sin6_scope_id != b.sin6_scope_id)
4272 * returns a sockaddr_in6 with embedded scope recovered and removed
4274 struct sockaddr_in6 *
4275 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4277 /* check and strip embedded scope junk */
4278 if (addr->sin6_family == AF_INET6) {
4279 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4280 if (addr->sin6_scope_id == 0) {
4282 if (!sa6_recoverscope(store)) {
4283 /* use the recovered scope */
4287 /* else, return the original "to" addr */
4288 in6_clearscope(&addr->sin6_addr);
4298 * are the two addresses the same? currently a "scopeless" check returns: 1
4302 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4306 if (sa1 == NULL || sa2 == NULL)
4309 /* must be the same family */
4310 if (sa1->sa_family != sa2->sa_family)
4313 switch (sa1->sa_family) {
4317 /* IPv6 addresses */
4318 struct sockaddr_in6 *sin6_1, *sin6_2;
4320 sin6_1 = (struct sockaddr_in6 *)sa1;
4321 sin6_2 = (struct sockaddr_in6 *)sa2;
4322 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4329 /* IPv4 addresses */
4330 struct sockaddr_in *sin_1, *sin_2;
4332 sin_1 = (struct sockaddr_in *)sa1;
4333 sin_2 = (struct sockaddr_in *)sa2;
4334 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4338 /* we don't do these... */
4344 sctp_print_address(struct sockaddr *sa)
4347 char ip6buf[INET6_ADDRSTRLEN];
4351 switch (sa->sa_family) {
4355 struct sockaddr_in6 *sin6;
4357 sin6 = (struct sockaddr_in6 *)sa;
4358 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4359 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4360 ntohs(sin6->sin6_port),
4361 sin6->sin6_scope_id);
4368 struct sockaddr_in *sin;
4371 sin = (struct sockaddr_in *)sa;
4372 p = (unsigned char *)&sin->sin_addr;
4373 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4374 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4385 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4386 struct sctp_inpcb *new_inp,
4387 struct sctp_tcb *stcb,
4391 * go through our old INP and pull off any control structures that
4392 * belong to stcb and move then to the new inp.
4394 struct socket *old_so, *new_so;
4395 struct sctp_queued_to_read *control, *nctl;
4396 struct sctp_readhead tmp_queue;
4400 old_so = old_inp->sctp_socket;
4401 new_so = new_inp->sctp_socket;
4402 TAILQ_INIT(&tmp_queue);
4403 error = sblock(&old_so->so_rcv, waitflags);
4406 * Gak, can't get sblock, we have a problem. data will be
4407 * left stranded.. and we don't dare look at it since the
4408 * other thread may be reading something. Oh well, its a
4409 * screwed up app that does a peeloff OR a accept while
4410 * reading from the main socket... actually its only the
4411 * peeloff() case, since I think read will fail on a
4412 * listening socket..
4416 /* lock the socket buffers */
4417 SCTP_INP_READ_LOCK(old_inp);
4418 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4419 /* Pull off all for out target stcb */
4420 if (control->stcb == stcb) {
4421 /* remove it we want it */
4422 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4423 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4426 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4427 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4429 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4430 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4431 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4433 m = SCTP_BUF_NEXT(m);
4437 SCTP_INP_READ_UNLOCK(old_inp);
4438 /* Remove the sb-lock on the old socket */
4440 sbunlock(&old_so->so_rcv);
4441 /* Now we move them over to the new socket buffer */
4442 SCTP_INP_READ_LOCK(new_inp);
4443 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4444 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4447 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4448 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4450 sctp_sballoc(stcb, &new_so->so_rcv, m);
4451 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4452 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4454 m = SCTP_BUF_NEXT(m);
4457 SCTP_INP_READ_UNLOCK(new_inp);
4461 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
4462 struct sctp_tcb *stcb,
4464 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4469 if ((inp != NULL) && (inp->sctp_socket != NULL)) {
4470 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4471 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4473 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4476 so = SCTP_INP_SO(inp);
4479 atomic_add_int(&stcb->asoc.refcnt, 1);
4480 SCTP_TCB_UNLOCK(stcb);
4482 SCTP_SOCKET_LOCK(so, 1);
4484 SCTP_TCB_LOCK(stcb);
4485 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4487 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4488 SCTP_SOCKET_UNLOCK(so, 1);
4493 sctp_sorwakeup(inp, inp->sctp_socket);
4494 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4496 SCTP_SOCKET_UNLOCK(so, 1);
4504 sctp_add_to_readq(struct sctp_inpcb *inp,
4505 struct sctp_tcb *stcb,
4506 struct sctp_queued_to_read *control,
4509 int inp_read_lock_held,
4511 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4517 * Here we must place the control on the end of the socket read
4518 * queue AND increment sb_cc so that select will work properly on
4521 struct mbuf *m, *prev = NULL;
4526 panic("Gak, inp NULL on add_to_readq");
4530 if (inp_read_lock_held == 0)
4531 SCTP_INP_READ_LOCK(inp);
4532 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4533 sctp_free_remote_addr(control->whoFrom);
4534 if (control->data) {
4535 sctp_m_freem(control->data);
4536 control->data = NULL;
4538 sctp_free_a_readq(stcb, control);
4539 if (inp_read_lock_held == 0)
4540 SCTP_INP_READ_UNLOCK(inp);
4543 if (!(control->spec_flags & M_NOTIFICATION)) {
4544 atomic_add_int(&inp->total_recvs, 1);
4545 if (!control->do_not_ref_stcb) {
4546 atomic_add_int(&stcb->total_recvs, 1);
4550 control->held_length = 0;
4551 control->length = 0;
4553 if (SCTP_BUF_LEN(m) == 0) {
4554 /* Skip mbufs with NO length */
4557 control->data = sctp_m_free(m);
4560 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4561 m = SCTP_BUF_NEXT(prev);
4564 control->tail_mbuf = prev;
4569 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4570 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4572 sctp_sballoc(stcb, sb, m);
4573 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4574 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4576 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4577 m = SCTP_BUF_NEXT(m);
4580 control->tail_mbuf = prev;
4582 /* Everything got collapsed out?? */
4583 sctp_free_remote_addr(control->whoFrom);
4584 sctp_free_a_readq(stcb, control);
4585 if (inp_read_lock_held == 0)
4586 SCTP_INP_READ_UNLOCK(inp);
4590 control->end_added = 1;
4592 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4593 control->on_read_q = 1;
4594 if (inp_read_lock_held == 0)
4595 SCTP_INP_READ_UNLOCK(inp);
4596 if (inp && inp->sctp_socket) {
4597 sctp_wakeup_the_read_socket(inp, stcb, so_locked);
4601 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4602 *************ALTERNATE ROUTING CODE
4605 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4606 *************ALTERNATE ROUTING CODE
4610 sctp_generate_cause(uint16_t code, char *info)
4613 struct sctp_gen_error_cause *cause;
4617 if ((code == 0) || (info == NULL)) {
4620 info_len = strlen(info);
4621 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
4624 len = (uint16_t) (sizeof(struct sctp_paramhdr) + info_len);
4625 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4627 SCTP_BUF_LEN(m) = len;
4628 cause = mtod(m, struct sctp_gen_error_cause *);
4629 cause->code = htons(code);
4630 cause->length = htons(len);
4631 memcpy(cause->info, info, info_len);
4637 sctp_generate_no_user_data_cause(uint32_t tsn)
4640 struct sctp_error_no_user_data *no_user_data_cause;
4643 len = (uint16_t) sizeof(struct sctp_error_no_user_data);
4644 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4646 SCTP_BUF_LEN(m) = len;
4647 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4648 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4649 no_user_data_cause->cause.length = htons(len);
4650 no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */
4655 #ifdef SCTP_MBCNT_LOGGING
4657 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4658 struct sctp_tmit_chunk *tp1, int chk_cnt)
4660 if (tp1->data == NULL) {
4663 asoc->chunks_on_out_queue -= chk_cnt;
4664 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4665 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4666 asoc->total_output_queue_size,
4671 if (asoc->total_output_queue_size >= tp1->book_size) {
4672 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4674 asoc->total_output_queue_size = 0;
4677 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4678 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4679 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4680 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4682 stcb->sctp_socket->so_snd.sb_cc = 0;
4691 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4692 uint8_t sent, int so_locked
4693 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4698 struct sctp_stream_out *strq;
4699 struct sctp_tmit_chunk *chk = NULL, *tp2;
4700 struct sctp_stream_queue_pending *sp;
4701 uint16_t stream = 0, seq = 0;
4702 uint8_t foundeom = 0;
4705 int do_wakeup_routine = 0;
4707 stream = tp1->rec.data.stream_number;
4708 seq = tp1->rec.data.stream_seq;
4709 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
4710 stcb->asoc.abandoned_sent[0]++;
4711 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4712 stcb->asoc.strmout[stream].abandoned_sent[0]++;
4713 #if defined(SCTP_DETAILED_STR_STATS)
4714 stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4717 stcb->asoc.abandoned_unsent[0]++;
4718 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4719 stcb->asoc.strmout[stream].abandoned_unsent[0]++;
4720 #if defined(SCTP_DETAILED_STR_STATS)
4721 stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4725 ret_sz += tp1->book_size;
4726 if (tp1->data != NULL) {
4727 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4728 sctp_flight_size_decrease(tp1);
4729 sctp_total_flight_decrease(stcb, tp1);
4731 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4732 stcb->asoc.peers_rwnd += tp1->send_size;
4733 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4735 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4737 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4740 sctp_m_freem(tp1->data);
4743 do_wakeup_routine = 1;
4744 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4745 stcb->asoc.sent_queue_cnt_removeable--;
4748 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4749 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4750 SCTP_DATA_NOT_FRAG) {
4751 /* not frag'ed we ae done */
4754 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4755 /* end of frag, we are done */
4760 * Its a begin or middle piece, we must mark all of
4764 tp1 = TAILQ_NEXT(tp1, sctp_next);
4766 } while (tp1 && notdone);
4767 if (foundeom == 0) {
4769 * The multi-part message was scattered across the send and
4772 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4773 if ((tp1->rec.data.stream_number != stream) ||
4774 (tp1->rec.data.stream_seq != seq)) {
4778 * save to chk in case we have some on stream out
4779 * queue. If so and we have an un-transmitted one we
4780 * don't have to fudge the TSN.
4783 ret_sz += tp1->book_size;
4784 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4786 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4788 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4791 sctp_m_freem(tp1->data);
4794 /* No flight involved here book the size to 0 */
4796 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4799 do_wakeup_routine = 1;
4800 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4801 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4803 * on to the sent queue so we can wait for it to be
4806 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4808 stcb->asoc.send_queue_cnt--;
4809 stcb->asoc.sent_queue_cnt++;
4812 if (foundeom == 0) {
4814 * Still no eom found. That means there is stuff left on the
4815 * stream out queue.. yuck.
4817 SCTP_TCB_SEND_LOCK(stcb);
4818 strq = &stcb->asoc.strmout[stream];
4819 sp = TAILQ_FIRST(&strq->outqueue);
4821 sp->discard_rest = 1;
4823 * We may need to put a chunk on the queue that
4824 * holds the TSN that would have been sent with the
4828 /* Yep, we have to */
4829 sctp_alloc_a_chunk(stcb, chk);
4832 * we are hosed. All we can do is
4833 * nothing.. which will cause an
4834 * abort if the peer is paying
4839 memset(chk, 0, sizeof(*chk));
4840 chk->rec.data.rcv_flags = 0;
4841 chk->sent = SCTP_FORWARD_TSN_SKIP;
4842 chk->asoc = &stcb->asoc;
4843 if (stcb->asoc.idata_supported == 0) {
4844 if (sp->sinfo_flags & SCTP_UNORDERED) {
4845 chk->rec.data.stream_seq = 0;
4847 chk->rec.data.stream_seq = strq->next_mid_ordered;
4850 if (sp->sinfo_flags & SCTP_UNORDERED) {
4851 chk->rec.data.stream_seq = strq->next_mid_unordered;
4853 chk->rec.data.stream_seq = strq->next_mid_ordered;
4856 chk->rec.data.stream_number = sp->stream;
4857 chk->rec.data.payloadtype = sp->ppid;
4858 chk->rec.data.context = sp->context;
4859 chk->flags = sp->act_flags;
4861 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4862 strq->chunks_on_queues++;
4863 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4864 stcb->asoc.sent_queue_cnt++;
4865 stcb->asoc.pr_sctp_cnt++;
4867 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4868 if (stcb->asoc.idata_supported == 0) {
4869 if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) {
4870 strq->next_mid_ordered++;
4873 if (sp->sinfo_flags & SCTP_UNORDERED) {
4874 strq->next_mid_unordered++;
4876 strq->next_mid_ordered++;
4882 * Pull any data to free up the SB and allow
4883 * sender to "add more" while we will throw
4886 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4887 ret_sz += sp->length;
4888 do_wakeup_routine = 1;
4890 sctp_m_freem(sp->data);
4892 sp->tail_mbuf = NULL;
4896 SCTP_TCB_SEND_UNLOCK(stcb);
4898 if (do_wakeup_routine) {
4899 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4902 so = SCTP_INP_SO(stcb->sctp_ep);
4904 atomic_add_int(&stcb->asoc.refcnt, 1);
4905 SCTP_TCB_UNLOCK(stcb);
4906 SCTP_SOCKET_LOCK(so, 1);
4907 SCTP_TCB_LOCK(stcb);
4908 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4909 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4910 /* assoc was freed while we were unlocked */
4911 SCTP_SOCKET_UNLOCK(so, 1);
4916 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4917 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4919 SCTP_SOCKET_UNLOCK(so, 1);
4927 * checks to see if the given address, sa, is one that is currently known by
4928 * the kernel note: can't distinguish the same address on multiple interfaces
4929 * and doesn't handle multiple addresses with different zone/scope id's note:
4930 * ifa_ifwithaddr() compares the entire sockaddr struct
4933 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4936 struct sctp_laddr *laddr;
4938 if (holds_lock == 0) {
4939 SCTP_INP_RLOCK(inp);
4941 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4942 if (laddr->ifa == NULL)
4944 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4947 if (addr->sa_family == AF_INET) {
4948 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4949 laddr->ifa->address.sin.sin_addr.s_addr) {
4951 if (holds_lock == 0) {
4952 SCTP_INP_RUNLOCK(inp);
4954 return (laddr->ifa);
4960 if (addr->sa_family == AF_INET6) {
4961 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4962 &laddr->ifa->address.sin6)) {
4964 if (holds_lock == 0) {
4965 SCTP_INP_RUNLOCK(inp);
4967 return (laddr->ifa);
4973 if (holds_lock == 0) {
4974 SCTP_INP_RUNLOCK(inp);
4980 sctp_get_ifa_hash_val(struct sockaddr *addr)
4982 switch (addr->sa_family) {
4986 struct sockaddr_in *sin;
4988 sin = (struct sockaddr_in *)addr;
4989 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
4995 struct sockaddr_in6 *sin6;
4996 uint32_t hash_of_addr;
4998 sin6 = (struct sockaddr_in6 *)addr;
4999 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5000 sin6->sin6_addr.s6_addr32[1] +
5001 sin6->sin6_addr.s6_addr32[2] +
5002 sin6->sin6_addr.s6_addr32[3]);
5003 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5004 return (hash_of_addr);
5014 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5016 struct sctp_ifa *sctp_ifap;
5017 struct sctp_vrf *vrf;
5018 struct sctp_ifalist *hash_head;
5019 uint32_t hash_of_addr;
5021 if (holds_lock == 0)
5022 SCTP_IPI_ADDR_RLOCK();
5024 vrf = sctp_find_vrf(vrf_id);
5026 if (holds_lock == 0)
5027 SCTP_IPI_ADDR_RUNLOCK();
5030 hash_of_addr = sctp_get_ifa_hash_val(addr);
5032 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5033 if (hash_head == NULL) {
5034 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5035 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
5036 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
5037 sctp_print_address(addr);
5038 SCTP_PRINTF("No such bucket for address\n");
5039 if (holds_lock == 0)
5040 SCTP_IPI_ADDR_RUNLOCK();
5044 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5045 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5048 if (addr->sa_family == AF_INET) {
5049 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5050 sctp_ifap->address.sin.sin_addr.s_addr) {
5052 if (holds_lock == 0)
5053 SCTP_IPI_ADDR_RUNLOCK();
5060 if (addr->sa_family == AF_INET6) {
5061 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5062 &sctp_ifap->address.sin6)) {
5064 if (holds_lock == 0)
5065 SCTP_IPI_ADDR_RUNLOCK();
5072 if (holds_lock == 0)
5073 SCTP_IPI_ADDR_RUNLOCK();
5078 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
5081 /* User pulled some data, do we need a rwnd update? */
5084 struct socket *so = NULL;
5089 atomic_add_int(&stcb->asoc.refcnt, 1);
5091 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5092 SCTP_STATE_SHUTDOWN_RECEIVED |
5093 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5094 /* Pre-check If we are freeing no update */
5097 SCTP_INP_INCR_REF(stcb->sctp_ep);
5098 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5099 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5102 so = stcb->sctp_socket;
5106 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5107 /* Have you have freed enough to look */
5109 /* Yep, its worth a look and the lock overhead */
5111 /* Figure out what the rwnd would be */
5112 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5113 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5114 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5118 if (dif >= rwnd_req) {
5120 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5123 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5125 * One last check before we allow the guy possibly
5126 * to get in. There is a race, where the guy has not
5127 * reached the gate. In that case
5131 SCTP_TCB_LOCK(stcb);
5132 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5133 /* No reports here */
5134 SCTP_TCB_UNLOCK(stcb);
5137 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5138 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5140 sctp_chunk_output(stcb->sctp_ep, stcb,
5141 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5142 /* make sure no timer is running */
5143 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5144 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5145 SCTP_TCB_UNLOCK(stcb);
5147 /* Update how much we have pending */
5148 stcb->freed_by_sorcv_sincelast = dif;
5151 if (so && r_unlocked && hold_rlock) {
5152 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5154 SCTP_INP_DECR_REF(stcb->sctp_ep);
5156 atomic_add_int(&stcb->asoc.refcnt, -1);
5161 sctp_sorecvmsg(struct socket *so,
5164 struct sockaddr *from,
5167 struct sctp_sndrcvinfo *sinfo,
5171 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5172 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5173 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5174 * On the way out we may send out any combination of:
5175 * MSG_NOTIFICATION MSG_EOR
5178 struct sctp_inpcb *inp = NULL;
5180 int cp_len = 0, error = 0;
5181 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5182 struct mbuf *m = NULL;
5183 struct sctp_tcb *stcb = NULL;
5184 int wakeup_read_socket = 0;
5185 int freecnt_applied = 0;
5186 int out_flags = 0, in_flags = 0;
5187 int block_allowed = 1;
5188 uint32_t freed_so_far = 0;
5189 uint32_t copied_so_far = 0;
5190 int in_eeor_mode = 0;
5191 int no_rcv_needed = 0;
5192 uint32_t rwnd_req = 0;
5193 int hold_sblock = 0;
5196 uint32_t held_length = 0;
5197 int sockbuf_lock = 0;
5200 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5204 in_flags = *msg_flags;
5205 if (in_flags & MSG_PEEK)
5206 SCTP_STAT_INCR(sctps_read_peeks);
5210 slen = uio->uio_resid;
5212 /* Pull in and set up our int flags */
5213 if (in_flags & MSG_OOB) {
5214 /* Out of band's NOT supported */
5215 return (EOPNOTSUPP);
5217 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5218 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5221 if ((in_flags & (MSG_DONTWAIT
5224 SCTP_SO_IS_NBIO(so)) {
5227 /* setup the endpoint */
5228 inp = (struct sctp_inpcb *)so->so_pcb;
5230 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5233 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5234 /* Must be at least a MTU's worth */
5235 if (rwnd_req < SCTP_MIN_RWND)
5236 rwnd_req = SCTP_MIN_RWND;
5237 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5238 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5239 sctp_misc_ints(SCTP_SORECV_ENTER,
5240 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t) uio->uio_resid);
5242 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5243 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5244 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t) uio->uio_resid);
5246 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5248 goto release_unlocked;
5255 if (hold_sblock == 0) {
5256 SOCKBUF_LOCK(&so->so_rcv);
5259 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5260 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5263 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5265 error = so->so_error;
5266 if ((in_flags & MSG_PEEK) == 0)
5270 if (so->so_rcv.sb_cc == 0) {
5277 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
5278 /* we need to wait for data */
5279 if ((so->so_rcv.sb_cc == 0) &&
5280 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5281 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5282 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5284 * For active open side clear flags for
5285 * re-use passive open is blocked by
5288 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5290 * You were aborted, passive side
5293 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5296 so->so_state &= ~(SS_ISCONNECTING |
5297 SS_ISDISCONNECTING |
5301 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5302 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5309 error = sbwait(&so->so_rcv);
5314 goto restart_nosblocks;
5315 } else if (so->so_rcv.sb_cc == 0) {
5317 error = so->so_error;
5318 if ((in_flags & MSG_PEEK) == 0)
5321 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5322 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
5323 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5325 * For active open side clear flags
5326 * for re-use passive open is
5327 * blocked by connect.
5329 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5331 * You were aborted, passive
5332 * side always hits here
5334 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5337 so->so_state &= ~(SS_ISCONNECTING |
5338 SS_ISDISCONNECTING |
5342 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5343 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5350 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5351 error = EWOULDBLOCK;
5355 if (hold_sblock == 1) {
5356 SOCKBUF_UNLOCK(&so->so_rcv);
5359 /* we possibly have data we can read */
5360 /* sa_ignore FREED_MEMORY */
5361 control = TAILQ_FIRST(&inp->read_queue);
5362 if (control == NULL) {
5364 * This could be happening since the appender did the
5365 * increment but as not yet did the tailq insert onto the
5368 if (hold_rlock == 0) {
5369 SCTP_INP_READ_LOCK(inp);
5371 control = TAILQ_FIRST(&inp->read_queue);
5372 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5374 panic("Huh, its non zero and nothing on control?");
5376 so->so_rcv.sb_cc = 0;
5378 SCTP_INP_READ_UNLOCK(inp);
5382 if ((control->length == 0) &&
5383 (control->do_not_ref_stcb)) {
5385 * Clean up code for freeing assoc that left behind a
5386 * pdapi.. maybe a peer in EEOR that just closed after
5387 * sending and never indicated a EOR.
5389 if (hold_rlock == 0) {
5391 SCTP_INP_READ_LOCK(inp);
5393 control->held_length = 0;
5394 if (control->data) {
5395 /* Hmm there is data here .. fix */
5399 m_tmp = control->data;
5401 cnt += SCTP_BUF_LEN(m_tmp);
5402 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5403 control->tail_mbuf = m_tmp;
5404 control->end_added = 1;
5406 m_tmp = SCTP_BUF_NEXT(m_tmp);
5408 control->length = cnt;
5411 TAILQ_REMOVE(&inp->read_queue, control, next);
5412 /* Add back any hiddend data */
5413 sctp_free_remote_addr(control->whoFrom);
5414 sctp_free_a_readq(stcb, control);
5418 SCTP_INP_READ_UNLOCK(inp);
5422 if ((control->length == 0) &&
5423 (control->end_added == 1)) {
5425 * Do we also need to check for (control->pdapi_aborted ==
5428 if (hold_rlock == 0) {
5430 SCTP_INP_READ_LOCK(inp);
5432 TAILQ_REMOVE(&inp->read_queue, control, next);
5433 if (control->data) {
5435 panic("control->data not null but control->length == 0");
5437 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5438 sctp_m_freem(control->data);
5439 control->data = NULL;
5442 if (control->aux_data) {
5443 sctp_m_free(control->aux_data);
5444 control->aux_data = NULL;
5447 if (control->on_strm_q) {
5448 panic("About to free ctl:%p so:%p and its in %d",
5449 control, so, control->on_strm_q);
5452 sctp_free_remote_addr(control->whoFrom);
5453 sctp_free_a_readq(stcb, control);
5456 SCTP_INP_READ_UNLOCK(inp);
5460 if (control->length == 0) {
5461 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5463 /* find a more suitable one then this */
5464 ctl = TAILQ_NEXT(control, next);
5466 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5468 (ctl->spec_flags & M_NOTIFICATION) ||
5469 ((ctl->do_not_ref_stcb == 0) &&
5470 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5473 * If we have a different TCB next, and there is data
5474 * present. If we have already taken some (pdapi), OR we can
5475 * ref the tcb and no delivery as started on this stream, we
5476 * take it. Note we allow a notification on a different
5477 * assoc to be delivered..
5481 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5483 ((ctl->some_taken) ||
5484 ((ctl->do_not_ref_stcb == 0) &&
5485 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5486 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5488 * If we have the same tcb, and there is data present, and we
5489 * have the strm interleave feature present. Then if we have
5490 * taken some (pdapi) or we can refer to tht tcb AND we have
5491 * not started a delivery for this stream, we can take it.
5492 * Note we do NOT allow a notificaiton on the same assoc to
5498 ctl = TAILQ_NEXT(ctl, next);
5502 * if we reach here, not suitable replacement is available
5503 * <or> fragment interleave is NOT on. So stuff the sb_cc
5504 * into the our held count, and its time to sleep again.
5506 held_length = so->so_rcv.sb_cc;
5507 control->held_length = so->so_rcv.sb_cc;
5510 /* Clear the held length since there is something to read */
5511 control->held_length = 0;
5513 SCTP_INP_READ_UNLOCK(inp);
5518 * If we reach here, control has a some data for us to read off.
5519 * Note that stcb COULD be NULL.
5521 control->some_taken++;
5523 SOCKBUF_UNLOCK(&so->so_rcv);
5526 stcb = control->stcb;
5528 if ((control->do_not_ref_stcb == 0) &&
5529 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5530 if (freecnt_applied == 0)
5532 } else if (control->do_not_ref_stcb == 0) {
5533 /* you can't free it on me please */
5535 * The lock on the socket buffer protects us so the
5536 * free code will stop. But since we used the
5537 * socketbuf lock and the sender uses the tcb_lock
5538 * to increment, we need to use the atomic add to
5541 if (freecnt_applied) {
5543 panic("refcnt already incremented");
5545 SCTP_PRINTF("refcnt already incremented?\n");
5548 atomic_add_int(&stcb->asoc.refcnt, 1);
5549 freecnt_applied = 1;
5552 * Setup to remember how much we have not yet told
5553 * the peer our rwnd has opened up. Note we grab the
5554 * value from the tcb from last time. Note too that
5555 * sack sending clears this when a sack is sent,
5556 * which is fine. Once we hit the rwnd_req, we then
5557 * will go to the sctp_user_rcvd() that will not
5558 * lock until it KNOWs it MUST send a WUP-SACK.
5560 freed_so_far = stcb->freed_by_sorcv_sincelast;
5561 stcb->freed_by_sorcv_sincelast = 0;
5565 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5566 control->do_not_ref_stcb == 0) {
5567 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5569 /* First lets get off the sinfo and sockaddr info */
5570 if ((sinfo != NULL) && (filling_sinfo != 0)) {
5571 sinfo->sinfo_stream = control->sinfo_stream;
5572 sinfo->sinfo_ssn = (uint16_t) control->sinfo_ssn;
5573 sinfo->sinfo_flags = control->sinfo_flags;
5574 sinfo->sinfo_ppid = control->sinfo_ppid;
5575 sinfo->sinfo_context = control->sinfo_context;
5576 sinfo->sinfo_timetolive = control->sinfo_timetolive;
5577 sinfo->sinfo_tsn = control->sinfo_tsn;
5578 sinfo->sinfo_cumtsn = control->sinfo_cumtsn;
5579 sinfo->sinfo_assoc_id = control->sinfo_assoc_id;
5580 nxt = TAILQ_NEXT(control, next);
5581 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5582 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5583 struct sctp_extrcvinfo *s_extra;
5585 s_extra = (struct sctp_extrcvinfo *)sinfo;
5588 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5589 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5590 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5592 if (nxt->spec_flags & M_NOTIFICATION) {
5593 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5595 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5596 s_extra->serinfo_next_length = nxt->length;
5597 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5598 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5599 if (nxt->tail_mbuf != NULL) {
5600 if (nxt->end_added) {
5601 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5606 * we explicitly 0 this, since the memcpy
5607 * got some other things beyond the older
5608 * sinfo_ that is on the control's structure
5612 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5613 s_extra->serinfo_next_aid = 0;
5614 s_extra->serinfo_next_length = 0;
5615 s_extra->serinfo_next_ppid = 0;
5616 s_extra->serinfo_next_stream = 0;
5620 * update off the real current cum-ack, if we have an stcb.
5622 if ((control->do_not_ref_stcb == 0) && stcb)
5623 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5625 * mask off the high bits, we keep the actual chunk bits in
5628 sinfo->sinfo_flags &= 0x00ff;
5629 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5630 sinfo->sinfo_flags |= SCTP_UNORDERED;
5633 #ifdef SCTP_ASOCLOG_OF_TSNS
5635 int index, newindex;
5636 struct sctp_pcbtsn_rlog *entry;
5639 index = inp->readlog_index;
5640 newindex = index + 1;
5641 if (newindex >= SCTP_READ_LOG_SIZE) {
5644 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5645 entry = &inp->readlog[index];
5646 entry->vtag = control->sinfo_assoc_id;
5647 entry->strm = control->sinfo_stream;
5648 entry->seq = control->sinfo_ssn;
5649 entry->sz = control->length;
5650 entry->flgs = control->sinfo_flags;
5653 if ((fromlen > 0) && (from != NULL)) {
5654 union sctp_sockstore store;
5657 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5660 len = sizeof(struct sockaddr_in6);
5661 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5662 store.sin6.sin6_port = control->port_from;
5668 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5669 len = sizeof(struct sockaddr_in6);
5670 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5672 store.sin6.sin6_port = control->port_from;
5674 len = sizeof(struct sockaddr_in);
5675 store.sin = control->whoFrom->ro._l_addr.sin;
5676 store.sin.sin_port = control->port_from;
5679 len = sizeof(struct sockaddr_in);
5680 store.sin = control->whoFrom->ro._l_addr.sin;
5681 store.sin.sin_port = control->port_from;
5689 memcpy(from, &store, min((size_t)fromlen, len));
5692 struct sockaddr_in6 lsa6, *from6;
5694 from6 = (struct sockaddr_in6 *)from;
5695 sctp_recover_scope_mac(from6, (&lsa6));
5699 /* now copy out what data we can */
5701 /* copy out each mbuf in the chain up to length */
5705 /* Move out all we can */
5706 cp_len = (int)uio->uio_resid;
5707 my_len = (int)SCTP_BUF_LEN(m);
5708 if (cp_len > my_len) {
5709 /* not enough in this buf */
5713 SCTP_INP_READ_UNLOCK(inp);
5717 error = uiomove(mtod(m, char *), cp_len, uio);
5719 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5722 if ((control->do_not_ref_stcb == 0) && stcb &&
5723 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5727 /* error we are out of here */
5730 SCTP_INP_READ_LOCK(inp);
5732 if (cp_len == SCTP_BUF_LEN(m)) {
5733 if ((SCTP_BUF_NEXT(m) == NULL) &&
5734 (control->end_added)) {
5735 out_flags |= MSG_EOR;
5736 if ((control->do_not_ref_stcb == 0) &&
5737 (control->stcb != NULL) &&
5738 ((control->spec_flags & M_NOTIFICATION) == 0))
5739 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5741 if (control->spec_flags & M_NOTIFICATION) {
5742 out_flags |= MSG_NOTIFICATION;
5744 /* we ate up the mbuf */
5745 if (in_flags & MSG_PEEK) {
5747 m = SCTP_BUF_NEXT(m);
5748 copied_so_far += cp_len;
5750 /* dispose of the mbuf */
5751 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5752 sctp_sblog(&so->so_rcv,
5753 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5755 sctp_sbfree(control, stcb, &so->so_rcv, m);
5756 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5757 sctp_sblog(&so->so_rcv,
5758 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5760 copied_so_far += cp_len;
5761 freed_so_far += cp_len;
5762 freed_so_far += MSIZE;
5763 atomic_subtract_int(&control->length, cp_len);
5764 control->data = sctp_m_free(m);
5767 * been through it all, must hold sb
5768 * lock ok to null tail
5770 if (control->data == NULL) {
5772 if ((control->end_added == 0) ||
5773 (TAILQ_NEXT(control, next) == NULL)) {
5781 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5782 panic("Hmm we don't own the lock?");
5786 control->tail_mbuf = NULL;
5788 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5789 panic("end_added, nothing left and no MSG_EOR");
5795 /* Do we need to trim the mbuf? */
5796 if (control->spec_flags & M_NOTIFICATION) {
5797 out_flags |= MSG_NOTIFICATION;
5799 if ((in_flags & MSG_PEEK) == 0) {
5800 SCTP_BUF_RESV_UF(m, cp_len);
5801 SCTP_BUF_LEN(m) -= cp_len;
5802 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5803 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5805 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5806 if ((control->do_not_ref_stcb == 0) &&
5808 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5810 copied_so_far += cp_len;
5811 freed_so_far += cp_len;
5812 freed_so_far += MSIZE;
5813 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5814 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5815 SCTP_LOG_SBRESULT, 0);
5817 atomic_subtract_int(&control->length, cp_len);
5819 copied_so_far += cp_len;
5822 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5825 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5826 (control->do_not_ref_stcb == 0) &&
5827 (freed_so_far >= rwnd_req)) {
5828 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5830 } /* end while(m) */
5832 * At this point we have looked at it all and we either have
5833 * a MSG_EOR/or read all the user wants... <OR>
5834 * control->length == 0.
5836 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5837 /* we are done with this control */
5838 if (control->length == 0) {
5839 if (control->data) {
5841 panic("control->data not null at read eor?");
5843 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5844 sctp_m_freem(control->data);
5845 control->data = NULL;
5849 if (hold_rlock == 0) {
5850 SCTP_INP_READ_LOCK(inp);
5853 TAILQ_REMOVE(&inp->read_queue, control, next);
5854 /* Add back any hiddend data */
5855 if (control->held_length) {
5857 control->held_length = 0;
5858 wakeup_read_socket = 1;
5860 if (control->aux_data) {
5861 sctp_m_free(control->aux_data);
5862 control->aux_data = NULL;
5864 no_rcv_needed = control->do_not_ref_stcb;
5865 sctp_free_remote_addr(control->whoFrom);
5866 control->data = NULL;
5868 if (control->on_strm_q) {
5869 panic("About to free ctl:%p so:%p and its in %d",
5870 control, so, control->on_strm_q);
5873 sctp_free_a_readq(stcb, control);
5875 if ((freed_so_far >= rwnd_req) &&
5876 (no_rcv_needed == 0))
5877 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5881 * The user did not read all of this
5882 * message, turn off the returned MSG_EOR
5883 * since we are leaving more behind on the
5887 if (control->end_added &&
5888 (control->data == NULL) &&
5889 (control->tail_mbuf == NULL)) {
5890 panic("Gak, control->length is corrupt?");
5893 no_rcv_needed = control->do_not_ref_stcb;
5894 out_flags &= ~MSG_EOR;
5897 if (out_flags & MSG_EOR) {
5900 if ((uio->uio_resid == 0) ||
5902 (copied_so_far >= (uint32_t) max(so->so_rcv.sb_lowat, 1)))) {
5906 * If I hit here the receiver wants more and this message is
5907 * NOT done (pd-api). So two questions. Can we block? if not
5908 * we are done. Did the user NOT set MSG_WAITALL?
5910 if (block_allowed == 0) {
5914 * We need to wait for more data a few things: - We don't
5915 * sbunlock() so we don't get someone else reading. - We
5916 * must be sure to account for the case where what is added
5917 * is NOT to our control when we wakeup.
5921 * Do we need to tell the transport a rwnd update might be
5922 * needed before we go to sleep?
5924 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5925 ((freed_so_far >= rwnd_req) &&
5926 (control->do_not_ref_stcb == 0) &&
5927 (no_rcv_needed == 0))) {
5928 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5931 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5934 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5937 if (hold_rlock == 1) {
5938 SCTP_INP_READ_UNLOCK(inp);
5941 if (hold_sblock == 0) {
5942 SOCKBUF_LOCK(&so->so_rcv);
5945 if ((copied_so_far) && (control->length == 0) &&
5946 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5949 if (so->so_rcv.sb_cc <= control->held_length) {
5950 error = sbwait(&so->so_rcv);
5954 control->held_length = 0;
5957 SOCKBUF_UNLOCK(&so->so_rcv);
5960 if (control->length == 0) {
5961 /* still nothing here */
5962 if (control->end_added == 1) {
5963 /* he aborted, or is done i.e.did a shutdown */
5964 out_flags |= MSG_EOR;
5965 if (control->pdapi_aborted) {
5966 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5967 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5969 out_flags |= MSG_TRUNC;
5971 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5972 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5974 goto done_with_control;
5976 if (so->so_rcv.sb_cc > held_length) {
5977 control->held_length = so->so_rcv.sb_cc;
5980 goto wait_some_more;
5981 } else if (control->data == NULL) {
5983 * we must re-sync since data is probably being
5986 SCTP_INP_READ_LOCK(inp);
5987 if ((control->length > 0) && (control->data == NULL)) {
5989 * big trouble.. we have the lock and its
5993 panic("Impossible data==NULL length !=0");
5995 out_flags |= MSG_EOR;
5996 out_flags |= MSG_TRUNC;
5997 control->length = 0;
5998 SCTP_INP_READ_UNLOCK(inp);
5999 goto done_with_control;
6001 SCTP_INP_READ_UNLOCK(inp);
6002 /* We will fall around to get more data */
6007 * Give caller back the mbuf chain,
6008 * store in uio_resid the length
6010 wakeup_read_socket = 0;
6011 if ((control->end_added == 0) ||
6012 (TAILQ_NEXT(control, next) == NULL)) {
6013 /* Need to get rlock */
6014 if (hold_rlock == 0) {
6015 SCTP_INP_READ_LOCK(inp);
6019 if (control->end_added) {
6020 out_flags |= MSG_EOR;
6021 if ((control->do_not_ref_stcb == 0) &&
6022 (control->stcb != NULL) &&
6023 ((control->spec_flags & M_NOTIFICATION) == 0))
6024 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6026 if (control->spec_flags & M_NOTIFICATION) {
6027 out_flags |= MSG_NOTIFICATION;
6029 uio->uio_resid = control->length;
6030 *mp = control->data;
6033 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6034 sctp_sblog(&so->so_rcv,
6035 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6037 sctp_sbfree(control, stcb, &so->so_rcv, m);
6038 freed_so_far += SCTP_BUF_LEN(m);
6039 freed_so_far += MSIZE;
6040 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6041 sctp_sblog(&so->so_rcv,
6042 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6044 m = SCTP_BUF_NEXT(m);
6046 control->data = control->tail_mbuf = NULL;
6047 control->length = 0;
6048 if (out_flags & MSG_EOR) {
6049 /* Done with this control */
6050 goto done_with_control;
6054 if (hold_rlock == 1) {
6055 SCTP_INP_READ_UNLOCK(inp);
6058 if (hold_sblock == 1) {
6059 SOCKBUF_UNLOCK(&so->so_rcv);
6062 sbunlock(&so->so_rcv);
6067 SOCKBUF_UNLOCK(&so->so_rcv);
6070 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6071 if ((freed_so_far >= rwnd_req) &&
6072 (control && (control->do_not_ref_stcb == 0)) &&
6073 (no_rcv_needed == 0))
6074 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6078 *msg_flags = out_flags;
6080 if (((out_flags & MSG_EOR) == 0) &&
6081 ((in_flags & MSG_PEEK) == 0) &&
6083 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6084 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6085 struct sctp_extrcvinfo *s_extra;
6087 s_extra = (struct sctp_extrcvinfo *)sinfo;
6088 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6090 if (hold_rlock == 1) {
6091 SCTP_INP_READ_UNLOCK(inp);
6094 SOCKBUF_UNLOCK(&so->so_rcv);
6097 sbunlock(&so->so_rcv);
6099 if (freecnt_applied) {
6101 * The lock on the socket buffer protects us so the free
6102 * code will stop. But since we used the socketbuf lock and
6103 * the sender uses the tcb_lock to increment, we need to use
6104 * the atomic add to the refcnt.
6108 panic("stcb for refcnt has gone NULL?");
6114 atomic_add_int(&stcb->asoc.refcnt, -1);
6115 /* Save the value back for next time */
6116 stcb->freed_by_sorcv_sincelast = freed_so_far;
6118 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6120 sctp_misc_ints(SCTP_SORECV_DONE,
6122 (uint32_t) ((uio) ? (slen - uio->uio_resid) : slen),
6126 sctp_misc_ints(SCTP_SORECV_DONE,
6128 (uint32_t) ((uio) ? (slen - uio->uio_resid) : slen),
6134 if (wakeup_read_socket) {
6135 sctp_sorwakeup(inp, so);
6141 #ifdef SCTP_MBUF_LOGGING
6143 sctp_m_free(struct mbuf *m)
6145 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6146 sctp_log_mb(m, SCTP_MBUF_IFREE);
6152 sctp_m_freem(struct mbuf *mb)
6155 mb = sctp_m_free(mb);
6161 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6164 * Given a local address. For all associations that holds the
6165 * address, request a peer-set-primary.
6167 struct sctp_ifa *ifa;
6168 struct sctp_laddr *wi;
6170 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6172 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6173 return (EADDRNOTAVAIL);
6176 * Now that we have the ifa we must awaken the iterator with this
6179 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6181 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6184 /* Now incr the count and int wi structure */
6185 SCTP_INCR_LADDR_COUNT();
6186 bzero(wi, sizeof(*wi));
6187 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6189 wi->action = SCTP_SET_PRIM_ADDR;
6190 atomic_add_int(&ifa->refcount, 1);
6192 /* Now add it to the work queue */
6193 SCTP_WQ_ADDR_LOCK();
6195 * Should this really be a tailq? As it is we will process the
6198 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6199 SCTP_WQ_ADDR_UNLOCK();
6200 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6201 (struct sctp_inpcb *)NULL,
6202 (struct sctp_tcb *)NULL,
6203 (struct sctp_nets *)NULL);
6209 sctp_soreceive(struct socket *so,
6210 struct sockaddr **psa,
6213 struct mbuf **controlp,
6217 uint8_t sockbuf[256];
6218 struct sockaddr *from;
6219 struct sctp_extrcvinfo sinfo;
6220 int filling_sinfo = 1;
6221 struct sctp_inpcb *inp;
6223 inp = (struct sctp_inpcb *)so->so_pcb;
6224 /* pickup the assoc we are reading from */
6226 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6229 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6230 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6231 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6232 (controlp == NULL)) {
6233 /* user does not want the sndrcv ctl */
6237 from = (struct sockaddr *)sockbuf;
6238 fromlen = sizeof(sockbuf);
6245 if (filling_sinfo) {
6246 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6248 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6249 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6250 if (controlp != NULL) {
6251 /* copy back the sinfo in a CMSG format */
6253 *controlp = sctp_build_ctl_nchunk(inp,
6254 (struct sctp_sndrcvinfo *)&sinfo);
6259 /* copy back the address info */
6260 if (from && from->sa_len) {
6261 *psa = sodupsockaddr(from, M_NOWAIT);
6274 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6275 int totaddr, int *error)
6279 struct sctp_inpcb *inp;
6280 struct sockaddr *sa;
6284 struct sockaddr_in *sin;
6288 struct sockaddr_in6 *sin6;
6293 inp = stcb->sctp_ep;
6295 for (i = 0; i < totaddr; i++) {
6296 switch (sa->sa_family) {
6299 incr = sizeof(struct sockaddr_in);
6300 sin = (struct sockaddr_in *)sa;
6301 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6302 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6303 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6304 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6305 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6306 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6310 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6311 SCTP_DONOT_SETSCOPE,
6312 SCTP_ADDR_IS_CONFIRMED)) {
6313 /* assoc gone no un-lock */
6314 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6315 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6316 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6325 incr = sizeof(struct sockaddr_in6);
6326 sin6 = (struct sockaddr_in6 *)sa;
6327 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6328 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6329 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6330 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6331 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6335 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6336 SCTP_DONOT_SETSCOPE,
6337 SCTP_ADDR_IS_CONFIRMED)) {
6338 /* assoc gone no un-lock */
6339 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6340 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6341 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6351 sa = (struct sockaddr *)((caddr_t)sa + incr);
6358 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6359 unsigned int *totaddr,
6360 unsigned int *num_v4, unsigned int *num_v6, int *error,
6361 unsigned int limit, int *bad_addr)
6363 struct sockaddr *sa;
6364 struct sctp_tcb *stcb = NULL;
6365 unsigned int incr, at, i;
6369 *error = *num_v6 = *num_v4 = 0;
6370 /* account and validate addresses */
6371 for (i = 0; i < *totaddr; i++) {
6372 switch (sa->sa_family) {
6375 if (sa->sa_len != incr) {
6376 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6382 incr = (unsigned int)sizeof(struct sockaddr_in);
6388 struct sockaddr_in6 *sin6;
6390 sin6 = (struct sockaddr_in6 *)sa;
6391 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6392 /* Must be non-mapped for connectx */
6393 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6398 if (sa->sa_len != incr) {
6399 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6405 incr = (unsigned int)sizeof(struct sockaddr_in6);
6414 if (i == *totaddr) {
6417 SCTP_INP_INCR_REF(inp);
6418 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6420 /* Already have or am bring up an association */
6423 SCTP_INP_DECR_REF(inp);
6425 if ((at + incr) > limit) {
6429 sa = (struct sockaddr *)((caddr_t)sa + incr);
6431 return ((struct sctp_tcb *)NULL);
6435 * sctp_bindx(ADD) for one address.
6436 * assumes all arguments are valid/checked by caller.
6439 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6440 struct sockaddr *sa, sctp_assoc_t assoc_id,
6441 uint32_t vrf_id, int *error, void *p)
6443 struct sockaddr *addr_touse;
6445 #if defined(INET) && defined(INET6)
6446 struct sockaddr_in sin;
6450 /* see if we're bound all already! */
6451 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6452 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6458 if (sa->sa_family == AF_INET6) {
6460 struct sockaddr_in6 *sin6;
6463 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6464 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6468 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6469 /* can only bind v6 on PF_INET6 sockets */
6470 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6475 sin6 = (struct sockaddr_in6 *)addr_touse;
6476 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6477 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6478 SCTP_IPV6_V6ONLY(inp)) {
6479 /* can't bind v4-mapped on PF_INET sockets */
6480 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6484 in6_sin6_2_sin(&sin, sin6);
6485 addr_touse = (struct sockaddr *)&sin;
6491 if (sa->sa_family == AF_INET) {
6492 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6493 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6497 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6498 SCTP_IPV6_V6ONLY(inp)) {
6499 /* can't bind v4 on PF_INET sockets */
6500 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6506 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6508 /* Can't get proc for Net/Open BSD */
6509 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6513 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6517 * No locks required here since bind and mgmt_ep_sa all do their own
6518 * locking. If we do something for the FIX: below we may need to
6519 * lock in that case.
6521 if (assoc_id == 0) {
6522 /* add the address */
6523 struct sctp_inpcb *lep;
6524 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6526 /* validate the incoming port */
6527 if ((lsin->sin_port != 0) &&
6528 (lsin->sin_port != inp->sctp_lport)) {
6529 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6533 /* user specified 0 port, set it to existing port */
6534 lsin->sin_port = inp->sctp_lport;
6537 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6540 * We must decrement the refcount since we have the
6541 * ep already and are binding. No remove going on
6544 SCTP_INP_DECR_REF(lep);
6547 /* already bound to it.. ok */
6549 } else if (lep == NULL) {
6550 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6551 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6552 SCTP_ADD_IP_ADDRESS,
6555 *error = EADDRINUSE;
6561 * FIX: decide whether we allow assoc based bindx
6567 * sctp_bindx(DELETE) for one address.
6568 * assumes all arguments are valid/checked by caller.
6571 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6572 struct sockaddr *sa, sctp_assoc_t assoc_id,
6573 uint32_t vrf_id, int *error)
6575 struct sockaddr *addr_touse;
6577 #if defined(INET) && defined(INET6)
6578 struct sockaddr_in sin;
6582 /* see if we're bound all already! */
6583 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6584 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6590 if (sa->sa_family == AF_INET6) {
6592 struct sockaddr_in6 *sin6;
6596 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6597 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6601 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6602 /* can only bind v6 on PF_INET6 sockets */
6603 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6608 sin6 = (struct sockaddr_in6 *)addr_touse;
6609 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6610 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6611 SCTP_IPV6_V6ONLY(inp)) {
6612 /* can't bind mapped-v4 on PF_INET sockets */
6613 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6617 in6_sin6_2_sin(&sin, sin6);
6618 addr_touse = (struct sockaddr *)&sin;
6624 if (sa->sa_family == AF_INET) {
6625 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6626 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6630 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6631 SCTP_IPV6_V6ONLY(inp)) {
6632 /* can't bind v4 on PF_INET sockets */
6633 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6640 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6641 * below is ever changed we may need to lock before calling
6642 * association level binding.
6644 if (assoc_id == 0) {
6645 /* delete the address */
6646 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6647 SCTP_DEL_IP_ADDRESS,
6651 * FIX: decide whether we allow assoc based bindx
6657 * returns the valid local address count for an assoc, taking into account
6661 sctp_local_addr_count(struct sctp_tcb *stcb)
6666 int ipv4_local_scope, ipv4_addr_legal;
6670 int local_scope, site_scope, ipv6_addr_legal;
6673 struct sctp_vrf *vrf;
6674 struct sctp_ifn *sctp_ifn;
6675 struct sctp_ifa *sctp_ifa;
6678 /* Turn on all the appropriate scopes */
6679 loopback_scope = stcb->asoc.scope.loopback_scope;
6681 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6682 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6685 local_scope = stcb->asoc.scope.local_scope;
6686 site_scope = stcb->asoc.scope.site_scope;
6687 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6689 SCTP_IPI_ADDR_RLOCK();
6690 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6692 /* no vrf, no addresses */
6693 SCTP_IPI_ADDR_RUNLOCK();
6696 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6698 * bound all case: go through all ifns on the vrf
6700 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6701 if ((loopback_scope == 0) &&
6702 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6705 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6706 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6708 switch (sctp_ifa->address.sa.sa_family) {
6711 if (ipv4_addr_legal) {
6712 struct sockaddr_in *sin;
6714 sin = &sctp_ifa->address.sin;
6715 if (sin->sin_addr.s_addr == 0) {
6722 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6723 &sin->sin_addr) != 0) {
6726 if ((ipv4_local_scope == 0) &&
6727 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6730 /* count this one */
6739 if (ipv6_addr_legal) {
6740 struct sockaddr_in6 *sin6;
6742 sin6 = &sctp_ifa->address.sin6;
6743 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6746 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6747 &sin6->sin6_addr) != 0) {
6750 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6751 if (local_scope == 0)
6753 if (sin6->sin6_scope_id == 0) {
6754 if (sa6_recoverscope(sin6) != 0)
6772 if ((site_scope == 0) &&
6773 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6776 /* count this one */
6791 struct sctp_laddr *laddr;
6793 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6795 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6798 /* count this one */
6802 SCTP_IPI_ADDR_RUNLOCK();
6806 #if defined(SCTP_LOCAL_TRACE_BUF)
6809 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)
6811 uint32_t saveindex, newindex;
6814 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6815 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6818 newindex = saveindex + 1;
6820 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6821 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6824 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6825 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6826 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6827 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6828 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6829 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6830 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6831 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6836 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
6837 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
6842 struct ip6_hdr *ip6;
6845 struct mbuf *sp, *last;
6846 struct udphdr *uhdr;
6849 if ((m->m_flags & M_PKTHDR) == 0) {
6850 /* Can't handle one that is not a pkt hdr */
6853 /* Pull the src port */
6854 iph = mtod(m, struct ip *);
6855 uhdr = (struct udphdr *)((caddr_t)iph + off);
6856 port = uhdr->uh_sport;
6858 * Split out the mbuf chain. Leave the IP header in m, place the
6861 sp = m_split(m, off, M_NOWAIT);
6863 /* Gak, drop packet, we can't do a split */
6866 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6867 /* Gak, packet can't have an SCTP header in it - too small */
6871 /* Now pull up the UDP header and SCTP header together */
6872 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6874 /* Gak pullup failed */
6877 /* Trim out the UDP header */
6878 m_adj(sp, sizeof(struct udphdr));
6880 /* Now reconstruct the mbuf chain */
6881 for (last = m; last->m_next; last = last->m_next);
6883 m->m_pkthdr.len += sp->m_pkthdr.len;
6885 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
6886 * checksum and it was valid. Since CSUM_DATA_VALID ==
6887 * CSUM_SCTP_VALID this would imply that the HW also verified the
6888 * SCTP checksum. Therefore, clear the bit.
6890 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
6891 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
6893 if_name(m->m_pkthdr.rcvif),
6894 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
6895 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
6896 iph = mtod(m, struct ip *);
6897 switch (iph->ip_v) {
6900 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
6901 sctp_input_with_port(m, off, port);
6905 case IPV6_VERSION >> 4:
6906 ip6 = mtod(m, struct ip6_hdr *);
6907 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
6908 sctp6_input_with_port(&m, &off, port);
6922 sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED)
6924 struct ip *outer_ip, *inner_ip;
6928 struct sctp_inpcb *inp;
6929 struct sctp_tcb *stcb;
6930 struct sctp_nets *net;
6931 struct sctp_init_chunk *ch;
6932 struct sockaddr_in src, dst;
6935 inner_ip = (struct ip *)vip;
6936 icmp = (struct icmp *)((caddr_t)inner_ip -
6937 (sizeof(struct icmp) - sizeof(struct ip)));
6938 outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
6939 if (ntohs(outer_ip->ip_len) <
6940 sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
6943 udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
6944 sh = (struct sctphdr *)(udp + 1);
6945 memset(&src, 0, sizeof(struct sockaddr_in));
6946 src.sin_family = AF_INET;
6947 src.sin_len = sizeof(struct sockaddr_in);
6948 src.sin_port = sh->src_port;
6949 src.sin_addr = inner_ip->ip_src;
6950 memset(&dst, 0, sizeof(struct sockaddr_in));
6951 dst.sin_family = AF_INET;
6952 dst.sin_len = sizeof(struct sockaddr_in);
6953 dst.sin_port = sh->dest_port;
6954 dst.sin_addr = inner_ip->ip_dst;
6956 * 'dst' holds the dest of the packet that failed to be sent. 'src'
6957 * holds our local endpoint address. Thus we reverse the dst and the
6958 * src in the lookup.
6962 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
6963 (struct sockaddr *)&src,
6965 SCTP_DEFAULT_VRFID);
6966 if ((stcb != NULL) &&
6969 /* Check the UDP port numbers */
6970 if ((udp->uh_dport != net->port) ||
6971 (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
6972 SCTP_TCB_UNLOCK(stcb);
6975 /* Check the verification tag */
6976 if (ntohl(sh->v_tag) != 0) {
6978 * This must be the verification tag used for
6979 * sending out packets. We don't consider packets
6980 * reflecting the verification tag.
6982 if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
6983 SCTP_TCB_UNLOCK(stcb);
6987 if (ntohs(outer_ip->ip_len) >=
6989 8 + (inner_ip->ip_hl << 2) + 8 + 20) {
6991 * In this case we can check if we got an
6992 * INIT chunk and if the initiate tag
6995 ch = (struct sctp_init_chunk *)(sh + 1);
6996 if ((ch->ch.chunk_type != SCTP_INITIATION) ||
6997 (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
6998 SCTP_TCB_UNLOCK(stcb);
7002 SCTP_TCB_UNLOCK(stcb);
7006 type = icmp->icmp_type;
7007 code = icmp->icmp_code;
7008 if ((type == ICMP_UNREACH) &&
7009 (code == ICMP_UNREACH_PORT)) {
7010 code = ICMP_UNREACH_PROTOCOL;
7012 sctp_notify(inp, stcb, net, type, code,
7013 ntohs(inner_ip->ip_len),
7014 ntohs(icmp->icmp_nextmtu));
7016 if ((stcb == NULL) && (inp != NULL)) {
7017 /* reduce ref-count */
7018 SCTP_INP_WLOCK(inp);
7019 SCTP_INP_DECR_REF(inp);
7020 SCTP_INP_WUNLOCK(inp);
7023 SCTP_TCB_UNLOCK(stcb);
7033 sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED)
7035 struct ip6ctlparam *ip6cp;
7036 struct sctp_inpcb *inp;
7037 struct sctp_tcb *stcb;
7038 struct sctp_nets *net;
7041 struct sockaddr_in6 src, dst;
7044 ip6cp = (struct ip6ctlparam *)d;
7046 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid.
7048 if (ip6cp->ip6c_m == NULL) {
7052 * Check if we can safely examine the ports and the verification tag
7053 * of the SCTP common header.
7055 if (ip6cp->ip6c_m->m_pkthdr.len <
7056 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) {
7059 /* Copy out the UDP header. */
7060 memset(&udp, 0, sizeof(struct udphdr));
7061 m_copydata(ip6cp->ip6c_m,
7063 sizeof(struct udphdr),
7065 /* Copy out the port numbers and the verification tag. */
7066 memset(&sh, 0, sizeof(struct sctphdr));
7067 m_copydata(ip6cp->ip6c_m,
7068 ip6cp->ip6c_off + sizeof(struct udphdr),
7069 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
7071 memset(&src, 0, sizeof(struct sockaddr_in6));
7072 src.sin6_family = AF_INET6;
7073 src.sin6_len = sizeof(struct sockaddr_in6);
7074 src.sin6_port = sh.src_port;
7075 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
7076 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7079 memset(&dst, 0, sizeof(struct sockaddr_in6));
7080 dst.sin6_family = AF_INET6;
7081 dst.sin6_len = sizeof(struct sockaddr_in6);
7082 dst.sin6_port = sh.dest_port;
7083 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
7084 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7089 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7090 (struct sockaddr *)&src,
7091 &inp, &net, 1, SCTP_DEFAULT_VRFID);
7092 if ((stcb != NULL) &&
7095 /* Check the UDP port numbers */
7096 if ((udp.uh_dport != net->port) ||
7097 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7098 SCTP_TCB_UNLOCK(stcb);
7101 /* Check the verification tag */
7102 if (ntohl(sh.v_tag) != 0) {
7104 * This must be the verification tag used for
7105 * sending out packets. We don't consider packets
7106 * reflecting the verification tag.
7108 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
7109 SCTP_TCB_UNLOCK(stcb);
7113 if (ip6cp->ip6c_m->m_pkthdr.len >=
7114 ip6cp->ip6c_off + sizeof(struct udphdr) +
7115 sizeof(struct sctphdr) +
7116 sizeof(struct sctp_chunkhdr) +
7117 offsetof(struct sctp_init, a_rwnd)) {
7119 * In this case we can check if we got an
7120 * INIT chunk and if the initiate tag
7123 uint32_t initiate_tag;
7126 m_copydata(ip6cp->ip6c_m,
7128 sizeof(struct udphdr) +
7129 sizeof(struct sctphdr),
7131 (caddr_t)&chunk_type);
7132 m_copydata(ip6cp->ip6c_m,
7134 sizeof(struct udphdr) +
7135 sizeof(struct sctphdr) +
7136 sizeof(struct sctp_chunkhdr),
7138 (caddr_t)&initiate_tag);
7139 if ((chunk_type != SCTP_INITIATION) ||
7140 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
7141 SCTP_TCB_UNLOCK(stcb);
7145 SCTP_TCB_UNLOCK(stcb);
7149 type = ip6cp->ip6c_icmp6->icmp6_type;
7150 code = ip6cp->ip6c_icmp6->icmp6_code;
7151 if ((type == ICMP6_DST_UNREACH) &&
7152 (code == ICMP6_DST_UNREACH_NOPORT)) {
7153 type = ICMP6_PARAM_PROB;
7154 code = ICMP6_PARAMPROB_NEXTHEADER;
7156 sctp6_notify(inp, stcb, net, type, code,
7157 (uint16_t) ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
7159 if ((stcb == NULL) && (inp != NULL)) {
7160 /* reduce inp's ref-count */
7161 SCTP_INP_WLOCK(inp);
7162 SCTP_INP_DECR_REF(inp);
7163 SCTP_INP_WUNLOCK(inp);
7166 SCTP_TCB_UNLOCK(stcb);
7174 sctp_over_udp_stop(void)
7177 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7181 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7182 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7183 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7187 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7188 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7189 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7195 sctp_over_udp_start(void)
7201 struct sockaddr_in sin;
7205 struct sockaddr_in6 sin6;
7209 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7212 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7213 if (ntohs(port) == 0) {
7214 /* Must have a port set */
7218 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7219 /* Already running -- must stop first */
7224 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7225 /* Already running -- must stop first */
7230 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7231 SOCK_DGRAM, IPPROTO_UDP,
7232 curthread->td_ucred, curthread))) {
7233 sctp_over_udp_stop();
7236 /* Call the special UDP hook. */
7237 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7238 sctp_recv_udp_tunneled_packet,
7239 sctp_recv_icmp_tunneled_packet,
7241 sctp_over_udp_stop();
7244 /* Ok, we have a socket, bind it to the port. */
7245 memset(&sin, 0, sizeof(struct sockaddr_in));
7246 sin.sin_len = sizeof(struct sockaddr_in);
7247 sin.sin_family = AF_INET;
7248 sin.sin_port = htons(port);
7249 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7250 (struct sockaddr *)&sin, curthread))) {
7251 sctp_over_udp_stop();
7256 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7257 SOCK_DGRAM, IPPROTO_UDP,
7258 curthread->td_ucred, curthread))) {
7259 sctp_over_udp_stop();
7262 /* Call the special UDP hook. */
7263 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7264 sctp_recv_udp_tunneled_packet,
7265 sctp_recv_icmp6_tunneled_packet,
7267 sctp_over_udp_stop();
7270 /* Ok, we have a socket, bind it to the port. */
7271 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7272 sin6.sin6_len = sizeof(struct sockaddr_in6);
7273 sin6.sin6_family = AF_INET6;
7274 sin6.sin6_port = htons(port);
7275 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7276 (struct sockaddr *)&sin6, curthread))) {
7277 sctp_over_udp_stop();