2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <netinet/sctp_os.h>
37 #include <netinet/sctp_pcb.h>
38 #include <netinet/sctputil.h>
39 #include <netinet/sctp_var.h>
40 #include <netinet/sctp_sysctl.h>
42 #include <netinet6/sctp6_var.h>
44 #include <netinet/sctp_header.h>
45 #include <netinet/sctp_output.h>
46 #include <netinet/sctp_uio.h>
47 #include <netinet/sctp_timer.h>
48 #include <netinet/sctp_indata.h>/* for sctp_deliver_data() */
49 #include <netinet/sctp_auth.h>
50 #include <netinet/sctp_asconf.h>
51 #include <netinet/sctp_bsd_addr.h>
52 #include <netinet/udp.h>
53 #include <netinet/udp_var.h>
58 #define KTR_SCTP KTR_SUBSYS
61 extern struct sctp_cc_functions sctp_cc_functions[];
62 extern struct sctp_ss_functions sctp_ss_functions[];
65 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr)
67 struct sctp_cwnd_log sctp_clog;
69 sctp_clog.x.sb.stcb = stcb;
70 sctp_clog.x.sb.so_sbcc = sb->sb_cc;
72 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
74 sctp_clog.x.sb.stcb_sbcc = 0;
75 sctp_clog.x.sb.incr = incr;
76 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
79 sctp_clog.x.misc.log1,
80 sctp_clog.x.misc.log2,
81 sctp_clog.x.misc.log3,
82 sctp_clog.x.misc.log4);
86 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
88 struct sctp_cwnd_log sctp_clog;
90 sctp_clog.x.close.inp = (void *)inp;
91 sctp_clog.x.close.sctp_flags = inp->sctp_flags;
93 sctp_clog.x.close.stcb = (void *)stcb;
94 sctp_clog.x.close.state = (uint16_t) stcb->asoc.state;
96 sctp_clog.x.close.stcb = 0;
97 sctp_clog.x.close.state = 0;
99 sctp_clog.x.close.loc = loc;
100 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
101 SCTP_LOG_EVENT_CLOSE,
103 sctp_clog.x.misc.log1,
104 sctp_clog.x.misc.log2,
105 sctp_clog.x.misc.log3,
106 sctp_clog.x.misc.log4);
110 rto_logging(struct sctp_nets *net, int from)
112 struct sctp_cwnd_log sctp_clog;
114 memset(&sctp_clog, 0, sizeof(sctp_clog));
115 sctp_clog.x.rto.net = (void *)net;
116 sctp_clog.x.rto.rtt = net->rtt / 1000;
117 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
120 sctp_clog.x.misc.log1,
121 sctp_clog.x.misc.log2,
122 sctp_clog.x.misc.log3,
123 sctp_clog.x.misc.log4);
127 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
129 struct sctp_cwnd_log sctp_clog;
131 sctp_clog.x.strlog.stcb = stcb;
132 sctp_clog.x.strlog.n_tsn = tsn;
133 sctp_clog.x.strlog.n_sseq = sseq;
134 sctp_clog.x.strlog.e_tsn = 0;
135 sctp_clog.x.strlog.e_sseq = 0;
136 sctp_clog.x.strlog.strm = stream;
137 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
140 sctp_clog.x.misc.log1,
141 sctp_clog.x.misc.log2,
142 sctp_clog.x.misc.log3,
143 sctp_clog.x.misc.log4);
147 sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
149 struct sctp_cwnd_log sctp_clog;
151 sctp_clog.x.nagle.stcb = (void *)stcb;
152 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
153 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
154 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
155 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
156 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
157 SCTP_LOG_EVENT_NAGLE,
159 sctp_clog.x.misc.log1,
160 sctp_clog.x.misc.log2,
161 sctp_clog.x.misc.log3,
162 sctp_clog.x.misc.log4);
166 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
168 struct sctp_cwnd_log sctp_clog;
170 sctp_clog.x.sack.cumack = cumack;
171 sctp_clog.x.sack.oldcumack = old_cumack;
172 sctp_clog.x.sack.tsn = tsn;
173 sctp_clog.x.sack.numGaps = gaps;
174 sctp_clog.x.sack.numDups = dups;
175 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
178 sctp_clog.x.misc.log1,
179 sctp_clog.x.misc.log2,
180 sctp_clog.x.misc.log3,
181 sctp_clog.x.misc.log4);
185 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
187 struct sctp_cwnd_log sctp_clog;
189 memset(&sctp_clog, 0, sizeof(sctp_clog));
190 sctp_clog.x.map.base = map;
191 sctp_clog.x.map.cum = cum;
192 sctp_clog.x.map.high = high;
193 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
196 sctp_clog.x.misc.log1,
197 sctp_clog.x.misc.log2,
198 sctp_clog.x.misc.log3,
199 sctp_clog.x.misc.log4);
203 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from)
205 struct sctp_cwnd_log sctp_clog;
207 memset(&sctp_clog, 0, sizeof(sctp_clog));
208 sctp_clog.x.fr.largest_tsn = biggest_tsn;
209 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
210 sctp_clog.x.fr.tsn = tsn;
211 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
214 sctp_clog.x.misc.log1,
215 sctp_clog.x.misc.log2,
216 sctp_clog.x.misc.log3,
217 sctp_clog.x.misc.log4);
221 sctp_log_mb(struct mbuf *m, int from)
223 struct sctp_cwnd_log sctp_clog;
225 sctp_clog.x.mb.mp = m;
226 sctp_clog.x.mb.mbuf_flags = (uint8_t) (SCTP_BUF_GET_FLAGS(m));
227 sctp_clog.x.mb.size = (uint16_t) (SCTP_BUF_LEN(m));
228 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
229 if (SCTP_BUF_IS_EXTENDED(m)) {
230 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
231 sctp_clog.x.mb.refcnt = (uint8_t) (SCTP_BUF_EXTEND_REFCNT(m));
233 sctp_clog.x.mb.ext = 0;
234 sctp_clog.x.mb.refcnt = 0;
236 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
239 sctp_clog.x.misc.log1,
240 sctp_clog.x.misc.log2,
241 sctp_clog.x.misc.log3,
242 sctp_clog.x.misc.log4);
246 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from)
248 struct sctp_cwnd_log sctp_clog;
250 if (control == NULL) {
251 SCTP_PRINTF("Gak log of NULL?\n");
254 sctp_clog.x.strlog.stcb = control->stcb;
255 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
256 sctp_clog.x.strlog.n_sseq = control->sinfo_ssn;
257 sctp_clog.x.strlog.strm = control->sinfo_stream;
258 if (poschk != NULL) {
259 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
260 sctp_clog.x.strlog.e_sseq = poschk->sinfo_ssn;
262 sctp_clog.x.strlog.e_tsn = 0;
263 sctp_clog.x.strlog.e_sseq = 0;
265 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
268 sctp_clog.x.misc.log1,
269 sctp_clog.x.misc.log2,
270 sctp_clog.x.misc.log3,
271 sctp_clog.x.misc.log4);
275 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
277 struct sctp_cwnd_log sctp_clog;
279 sctp_clog.x.cwnd.net = net;
280 if (stcb->asoc.send_queue_cnt > 255)
281 sctp_clog.x.cwnd.cnt_in_send = 255;
283 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
284 if (stcb->asoc.stream_queue_cnt > 255)
285 sctp_clog.x.cwnd.cnt_in_str = 255;
287 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
290 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
291 sctp_clog.x.cwnd.inflight = net->flight_size;
292 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
293 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
294 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
296 if (SCTP_CWNDLOG_PRESEND == from) {
297 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
299 sctp_clog.x.cwnd.cwnd_augment = augment;
300 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
303 sctp_clog.x.misc.log1,
304 sctp_clog.x.misc.log2,
305 sctp_clog.x.misc.log3,
306 sctp_clog.x.misc.log4);
310 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
312 struct sctp_cwnd_log sctp_clog;
314 memset(&sctp_clog, 0, sizeof(sctp_clog));
316 sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
319 sctp_clog.x.lock.sock = (void *)NULL;
321 sctp_clog.x.lock.inp = (void *)inp;
323 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
325 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
328 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
329 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
331 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
332 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
334 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
335 if (inp && (inp->sctp_socket)) {
336 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
337 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
338 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
340 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
341 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
342 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
344 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
347 sctp_clog.x.misc.log1,
348 sctp_clog.x.misc.log2,
349 sctp_clog.x.misc.log3,
350 sctp_clog.x.misc.log4);
354 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
356 struct sctp_cwnd_log sctp_clog;
358 memset(&sctp_clog, 0, sizeof(sctp_clog));
359 sctp_clog.x.cwnd.net = net;
360 sctp_clog.x.cwnd.cwnd_new_value = error;
361 sctp_clog.x.cwnd.inflight = net->flight_size;
362 sctp_clog.x.cwnd.cwnd_augment = burst;
363 if (stcb->asoc.send_queue_cnt > 255)
364 sctp_clog.x.cwnd.cnt_in_send = 255;
366 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
367 if (stcb->asoc.stream_queue_cnt > 255)
368 sctp_clog.x.cwnd.cnt_in_str = 255;
370 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
371 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
372 SCTP_LOG_EVENT_MAXBURST,
374 sctp_clog.x.misc.log1,
375 sctp_clog.x.misc.log2,
376 sctp_clog.x.misc.log3,
377 sctp_clog.x.misc.log4);
381 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
383 struct sctp_cwnd_log sctp_clog;
385 sctp_clog.x.rwnd.rwnd = peers_rwnd;
386 sctp_clog.x.rwnd.send_size = snd_size;
387 sctp_clog.x.rwnd.overhead = overhead;
388 sctp_clog.x.rwnd.new_rwnd = 0;
389 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
392 sctp_clog.x.misc.log1,
393 sctp_clog.x.misc.log2,
394 sctp_clog.x.misc.log3,
395 sctp_clog.x.misc.log4);
399 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
401 struct sctp_cwnd_log sctp_clog;
403 sctp_clog.x.rwnd.rwnd = peers_rwnd;
404 sctp_clog.x.rwnd.send_size = flight_size;
405 sctp_clog.x.rwnd.overhead = overhead;
406 sctp_clog.x.rwnd.new_rwnd = a_rwndval;
407 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
410 sctp_clog.x.misc.log1,
411 sctp_clog.x.misc.log2,
412 sctp_clog.x.misc.log3,
413 sctp_clog.x.misc.log4);
417 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
419 struct sctp_cwnd_log sctp_clog;
421 sctp_clog.x.mbcnt.total_queue_size = total_oq;
422 sctp_clog.x.mbcnt.size_change = book;
423 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
424 sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
425 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
426 SCTP_LOG_EVENT_MBCNT,
428 sctp_clog.x.misc.log1,
429 sctp_clog.x.misc.log2,
430 sctp_clog.x.misc.log3,
431 sctp_clog.x.misc.log4);
435 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
437 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
444 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from)
446 struct sctp_cwnd_log sctp_clog;
448 sctp_clog.x.wake.stcb = (void *)stcb;
449 sctp_clog.x.wake.wake_cnt = wake_cnt;
450 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
451 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
452 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
454 if (stcb->asoc.stream_queue_cnt < 0xff)
455 sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt;
457 sctp_clog.x.wake.stream_qcnt = 0xff;
459 if (stcb->asoc.chunks_on_out_queue < 0xff)
460 sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue;
462 sctp_clog.x.wake.chunks_on_oque = 0xff;
464 sctp_clog.x.wake.sctpflags = 0;
465 /* set in the defered mode stuff */
466 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
467 sctp_clog.x.wake.sctpflags |= 1;
468 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
469 sctp_clog.x.wake.sctpflags |= 2;
470 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
471 sctp_clog.x.wake.sctpflags |= 4;
472 /* what about the sb */
473 if (stcb->sctp_socket) {
474 struct socket *so = stcb->sctp_socket;
476 sctp_clog.x.wake.sbflags = (uint8_t) ((so->so_snd.sb_flags & 0x00ff));
478 sctp_clog.x.wake.sbflags = 0xff;
480 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
483 sctp_clog.x.misc.log1,
484 sctp_clog.x.misc.log2,
485 sctp_clog.x.misc.log3,
486 sctp_clog.x.misc.log4);
490 sctp_log_block(uint8_t from, struct sctp_association *asoc, int sendlen)
492 struct sctp_cwnd_log sctp_clog;
494 sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
495 sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt);
496 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
497 sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt;
498 sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue;
499 sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight / 1024);
500 sctp_clog.x.blk.sndlen = sendlen;
501 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
502 SCTP_LOG_EVENT_BLOCK,
504 sctp_clog.x.misc.log1,
505 sctp_clog.x.misc.log2,
506 sctp_clog.x.misc.log3,
507 sctp_clog.x.misc.log4);
511 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
513 /* May need to fix this if ktrdump does not work */
517 #ifdef SCTP_AUDITING_ENABLED
518 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
519 static int sctp_audit_indx = 0;
523 sctp_print_audit_report(void)
529 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
530 if ((sctp_audit_data[i][0] == 0xe0) &&
531 (sctp_audit_data[i][1] == 0x01)) {
534 } else if (sctp_audit_data[i][0] == 0xf0) {
537 } else if ((sctp_audit_data[i][0] == 0xc0) &&
538 (sctp_audit_data[i][1] == 0x01)) {
542 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
543 (uint32_t) sctp_audit_data[i][1]);
548 for (i = 0; i < sctp_audit_indx; 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]);
571 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
572 struct sctp_nets *net)
574 int resend_cnt, tot_out, rep, tot_book_cnt;
575 struct sctp_nets *lnet;
576 struct sctp_tmit_chunk *chk;
578 sctp_audit_data[sctp_audit_indx][0] = 0xAA;
579 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
581 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
585 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
586 sctp_audit_data[sctp_audit_indx][1] = 0x01;
588 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
594 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
595 sctp_audit_data[sctp_audit_indx][1] = 0x02;
597 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
602 sctp_audit_data[sctp_audit_indx][0] = 0xA1;
603 sctp_audit_data[sctp_audit_indx][1] =
604 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
606 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
611 resend_cnt = tot_out = 0;
612 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
613 if (chk->sent == SCTP_DATAGRAM_RESEND) {
615 } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
616 tot_out += chk->book_size;
620 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
621 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
622 sctp_audit_data[sctp_audit_indx][1] = 0xA1;
624 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
627 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
628 resend_cnt, stcb->asoc.sent_queue_retran_cnt);
630 stcb->asoc.sent_queue_retran_cnt = resend_cnt;
631 sctp_audit_data[sctp_audit_indx][0] = 0xA2;
632 sctp_audit_data[sctp_audit_indx][1] =
633 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
635 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
639 if (tot_out != stcb->asoc.total_flight) {
640 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
641 sctp_audit_data[sctp_audit_indx][1] = 0xA2;
643 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
647 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
648 (int)stcb->asoc.total_flight);
649 stcb->asoc.total_flight = tot_out;
651 if (tot_book_cnt != stcb->asoc.total_flight_count) {
652 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
653 sctp_audit_data[sctp_audit_indx][1] = 0xA5;
655 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
659 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
661 stcb->asoc.total_flight_count = tot_book_cnt;
664 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
665 tot_out += lnet->flight_size;
667 if (tot_out != stcb->asoc.total_flight) {
668 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
669 sctp_audit_data[sctp_audit_indx][1] = 0xA3;
671 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
675 SCTP_PRINTF("real flight:%d net total was %d\n",
676 stcb->asoc.total_flight, tot_out);
677 /* now corrective action */
678 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
681 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
682 if ((chk->whoTo == lnet) &&
683 (chk->sent < SCTP_DATAGRAM_RESEND)) {
684 tot_out += chk->book_size;
687 if (lnet->flight_size != tot_out) {
688 SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
689 (void *)lnet, lnet->flight_size,
691 lnet->flight_size = tot_out;
696 sctp_print_audit_report();
701 sctp_audit_log(uint8_t ev, uint8_t fd)
704 sctp_audit_data[sctp_audit_indx][0] = ev;
705 sctp_audit_data[sctp_audit_indx][1] = fd;
707 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
715 * sctp_stop_timers_for_shutdown() should be called
716 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
717 * state to make sure that all timers are stopped.
720 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
722 struct sctp_association *asoc;
723 struct sctp_nets *net;
727 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
728 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
729 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
730 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
731 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
732 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
733 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
734 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
739 * a list of sizes based on typical mtu's, used only if next hop size not
742 static uint32_t sctp_mtu_sizes[] = {
764 * Return the largest MTU smaller than val. If there is no
765 * entry, just return val.
768 sctp_get_prev_mtu(uint32_t val)
772 if (val <= sctp_mtu_sizes[0]) {
775 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
776 if (val <= sctp_mtu_sizes[i]) {
780 return (sctp_mtu_sizes[i - 1]);
784 * Return the smallest MTU larger than val. If there is no
785 * entry, just return val.
788 sctp_get_next_mtu(uint32_t val)
790 /* select another MTU that is just bigger than this one */
793 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
794 if (val < sctp_mtu_sizes[i]) {
795 return (sctp_mtu_sizes[i]);
802 sctp_fill_random_store(struct sctp_pcb *m)
805 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
806 * our counter. The result becomes our good random numbers and we
807 * then setup to give these out. Note that we do no locking to
808 * protect this. This is ok, since if competing folks call this we
809 * will get more gobbled gook in the random store which is what we
810 * want. There is a danger that two guys will use the same random
811 * numbers, but thats ok too since that is random as well :->
814 (void)sctp_hmac(SCTP_HMAC, (uint8_t *) m->random_numbers,
815 sizeof(m->random_numbers), (uint8_t *) & m->random_counter,
816 sizeof(m->random_counter), (uint8_t *) m->random_store);
821 sctp_select_initial_TSN(struct sctp_pcb *inp)
824 * A true implementation should use random selection process to get
825 * the initial stream sequence number, using RFC1750 as a good
830 int store_at, new_store;
832 if (inp->initial_sequence_debug != 0) {
835 ret = inp->initial_sequence_debug;
836 inp->initial_sequence_debug++;
840 store_at = inp->store_at;
841 new_store = store_at + sizeof(uint32_t);
842 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
845 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
848 if (new_store == 0) {
849 /* Refill the random store */
850 sctp_fill_random_store(inp);
852 p = &inp->random_store[store_at];
859 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
865 (void)SCTP_GETTIME_TIMEVAL(&now);
868 x = sctp_select_initial_TSN(&inp->sctp_ep);
873 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
881 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
882 uint32_t override_tag, uint32_t vrf_id)
884 struct sctp_association *asoc;
887 * Anything set to zero is taken care of by the allocation routine's
892 * Up front select what scoping to apply on addresses I tell my peer
893 * Not sure what to do with these right now, we will need to come up
894 * with a way to set them. We may need to pass them through from the
895 * caller in the sctp_aloc_assoc() function.
900 /* init all variables to a known value. */
901 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
902 asoc->max_burst = inp->sctp_ep.max_burst;
903 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
904 asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
905 asoc->cookie_life = inp->sctp_ep.def_cookie_life;
906 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
907 asoc->ecn_supported = inp->ecn_supported;
908 asoc->prsctp_supported = inp->prsctp_supported;
909 asoc->nrsack_supported = inp->nrsack_supported;
910 asoc->pktdrop_supported = inp->pktdrop_supported;
911 asoc->sctp_cmt_pf = (uint8_t) 0;
912 asoc->sctp_frag_point = inp->sctp_frag_point;
913 asoc->sctp_features = inp->sctp_features;
914 asoc->default_dscp = inp->sctp_ep.default_dscp;
916 if (inp->sctp_ep.default_flowlabel) {
917 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
919 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
920 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
921 asoc->default_flowlabel &= 0x000fffff;
922 asoc->default_flowlabel |= 0x80000000;
924 asoc->default_flowlabel = 0;
928 asoc->sb_send_resv = 0;
930 asoc->my_vtag = override_tag;
932 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
934 /* Get the nonce tags */
935 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
936 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
937 asoc->vrf_id = vrf_id;
939 #ifdef SCTP_ASOCLOG_OF_TSNS
941 asoc->tsn_out_at = 0;
942 asoc->tsn_in_wrapped = 0;
943 asoc->tsn_out_wrapped = 0;
944 asoc->cumack_log_at = 0;
945 asoc->cumack_log_atsnt = 0;
947 #ifdef SCTP_FS_SPEC_LOG
951 asoc->assoc_up_sent = 0;
952 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
953 sctp_select_initial_TSN(&inp->sctp_ep);
954 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
955 /* we are optimisitic here */
956 asoc->peer_supports_nat = 0;
957 asoc->sent_queue_retran_cnt = 0;
960 asoc->last_net_cmt_send_started = NULL;
962 /* This will need to be adjusted */
963 asoc->last_acked_seq = asoc->init_seq_number - 1;
964 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
965 asoc->asconf_seq_in = asoc->last_acked_seq;
967 /* here we are different, we hold the next one we expect */
968 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
970 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
971 asoc->initial_rto = inp->sctp_ep.initial_rto;
973 asoc->max_init_times = inp->sctp_ep.max_init_times;
974 asoc->max_send_times = inp->sctp_ep.max_send_times;
975 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
976 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
977 asoc->free_chunk_cnt = 0;
979 asoc->iam_blocking = 0;
980 asoc->context = inp->sctp_context;
981 asoc->local_strreset_support = inp->local_strreset_support;
982 asoc->def_send = inp->def_send;
983 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
984 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
985 asoc->pr_sctp_cnt = 0;
986 asoc->total_output_queue_size = 0;
988 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
989 asoc->scope.ipv6_addr_legal = 1;
990 if (SCTP_IPV6_V6ONLY(inp) == 0) {
991 asoc->scope.ipv4_addr_legal = 1;
993 asoc->scope.ipv4_addr_legal = 0;
996 asoc->scope.ipv6_addr_legal = 0;
997 asoc->scope.ipv4_addr_legal = 1;
1000 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1001 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1003 asoc->smallest_mtu = inp->sctp_frag_point;
1004 asoc->minrto = inp->sctp_ep.sctp_minrto;
1005 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1007 asoc->locked_on_sending = NULL;
1008 asoc->stream_locked_on = 0;
1009 asoc->ecn_echo_cnt_onq = 0;
1010 asoc->stream_locked = 0;
1012 asoc->send_sack = 1;
1014 LIST_INIT(&asoc->sctp_restricted_addrs);
1016 TAILQ_INIT(&asoc->nets);
1017 TAILQ_INIT(&asoc->pending_reply_queue);
1018 TAILQ_INIT(&asoc->asconf_ack_sent);
1019 /* Setup to fill the hb random cache at first HB */
1020 asoc->hb_random_idx = 4;
1022 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1024 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1025 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1027 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1028 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1031 * Now the stream parameters, here we allocate space for all streams
1032 * that we request by default.
1034 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1035 inp->sctp_ep.pre_open_stream_count;
1036 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1037 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1039 if (asoc->strmout == NULL) {
1040 /* big trouble no memory */
1041 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1044 for (i = 0; i < asoc->streamoutcnt; i++) {
1046 * inbound side must be set to 0xffff, also NOTE when we get
1047 * the INIT-ACK back (for INIT sender) we MUST reduce the
1048 * count (streamoutcnt) but first check if we sent to any of
1049 * the upper streams that were dropped (if some were). Those
1050 * that were dropped must be notified to the upper layer as
1053 asoc->strmout[i].next_sequence_send = 0x0;
1054 TAILQ_INIT(&asoc->strmout[i].outqueue);
1055 asoc->strmout[i].chunks_on_queues = 0;
1056 asoc->strmout[i].stream_no = i;
1057 asoc->strmout[i].last_msg_incomplete = 0;
1058 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL);
1060 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1062 /* Now the mapping array */
1063 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1064 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1066 if (asoc->mapping_array == NULL) {
1067 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1068 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1071 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1072 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1074 if (asoc->nr_mapping_array == NULL) {
1075 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1076 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1077 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1080 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1082 /* Now the init of the other outqueues */
1083 TAILQ_INIT(&asoc->free_chunks);
1084 TAILQ_INIT(&asoc->control_send_queue);
1085 TAILQ_INIT(&asoc->asconf_send_queue);
1086 TAILQ_INIT(&asoc->send_queue);
1087 TAILQ_INIT(&asoc->sent_queue);
1088 TAILQ_INIT(&asoc->reasmqueue);
1089 TAILQ_INIT(&asoc->resetHead);
1090 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1091 TAILQ_INIT(&asoc->asconf_queue);
1092 /* authentication fields */
1093 asoc->authinfo.random = NULL;
1094 asoc->authinfo.active_keyid = 0;
1095 asoc->authinfo.assoc_key = NULL;
1096 asoc->authinfo.assoc_keyid = 0;
1097 asoc->authinfo.recv_key = NULL;
1098 asoc->authinfo.recv_keyid = 0;
1099 LIST_INIT(&asoc->shared_keys);
1100 asoc->marked_retrans = 0;
1101 asoc->port = inp->sctp_ep.port;
1105 asoc->timoshutdown = 0;
1106 asoc->timoheartbeat = 0;
1107 asoc->timocookie = 0;
1108 asoc->timoshutdownack = 0;
1109 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1110 asoc->discontinuity_time = asoc->start_time;
1112 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1113 * freed later when the association is freed.
1119 sctp_print_mapping_array(struct sctp_association *asoc)
1121 unsigned int i, limit;
1123 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1124 asoc->mapping_array_size,
1125 asoc->mapping_array_base_tsn,
1126 asoc->cumulative_tsn,
1127 asoc->highest_tsn_inside_map,
1128 asoc->highest_tsn_inside_nr_map);
1129 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1130 if (asoc->mapping_array[limit - 1] != 0) {
1134 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1135 for (i = 0; i < limit; i++) {
1136 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1140 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1141 if (asoc->nr_mapping_array[limit - 1]) {
1145 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1146 for (i = 0; i < limit; i++) {
1147 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1154 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1156 /* mapping array needs to grow */
1157 uint8_t *new_array1, *new_array2;
1160 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1161 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1162 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1163 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1164 /* can't get more, forget it */
1165 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1167 SCTP_FREE(new_array1, SCTP_M_MAP);
1170 SCTP_FREE(new_array2, SCTP_M_MAP);
1174 memset(new_array1, 0, new_size);
1175 memset(new_array2, 0, new_size);
1176 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1177 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1178 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1179 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1180 asoc->mapping_array = new_array1;
1181 asoc->nr_mapping_array = new_array2;
1182 asoc->mapping_array_size = new_size;
1188 sctp_iterator_work(struct sctp_iterator *it)
1190 int iteration_count = 0;
1193 struct sctp_inpcb *tinp;
1195 SCTP_INP_INFO_RLOCK();
1196 SCTP_ITERATOR_LOCK();
1198 SCTP_INP_RLOCK(it->inp);
1199 SCTP_INP_DECR_REF(it->inp);
1201 if (it->inp == NULL) {
1202 /* iterator is complete */
1204 SCTP_ITERATOR_UNLOCK();
1205 SCTP_INP_INFO_RUNLOCK();
1206 if (it->function_atend != NULL) {
1207 (*it->function_atend) (it->pointer, it->val);
1209 SCTP_FREE(it, SCTP_M_ITER);
1216 SCTP_INP_RLOCK(it->inp);
1218 while (((it->pcb_flags) &&
1219 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1220 ((it->pcb_features) &&
1221 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1222 /* endpoint flags or features don't match, so keep looking */
1223 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1224 SCTP_INP_RUNLOCK(it->inp);
1225 goto done_with_iterator;
1228 it->inp = LIST_NEXT(it->inp, sctp_list);
1229 SCTP_INP_RUNLOCK(tinp);
1230 if (it->inp == NULL) {
1231 goto done_with_iterator;
1233 SCTP_INP_RLOCK(it->inp);
1235 /* now go through each assoc which is in the desired state */
1236 if (it->done_current_ep == 0) {
1237 if (it->function_inp != NULL)
1238 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1239 it->done_current_ep = 1;
1241 if (it->stcb == NULL) {
1242 /* run the per instance function */
1243 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1245 if ((inp_skip) || it->stcb == NULL) {
1246 if (it->function_inp_end != NULL) {
1247 inp_skip = (*it->function_inp_end) (it->inp,
1251 SCTP_INP_RUNLOCK(it->inp);
1255 SCTP_TCB_LOCK(it->stcb);
1256 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1257 /* not in the right state... keep looking */
1258 SCTP_TCB_UNLOCK(it->stcb);
1261 /* see if we have limited out the iterator loop */
1263 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1264 /* Pause to let others grab the lock */
1265 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1266 SCTP_TCB_UNLOCK(it->stcb);
1267 SCTP_INP_INCR_REF(it->inp);
1268 SCTP_INP_RUNLOCK(it->inp);
1269 SCTP_ITERATOR_UNLOCK();
1270 SCTP_INP_INFO_RUNLOCK();
1271 SCTP_INP_INFO_RLOCK();
1272 SCTP_ITERATOR_LOCK();
1273 if (sctp_it_ctl.iterator_flags) {
1274 /* We won't be staying here */
1275 SCTP_INP_DECR_REF(it->inp);
1276 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1277 if (sctp_it_ctl.iterator_flags &
1278 SCTP_ITERATOR_STOP_CUR_IT) {
1279 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1280 goto done_with_iterator;
1282 if (sctp_it_ctl.iterator_flags &
1283 SCTP_ITERATOR_STOP_CUR_INP) {
1284 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1287 /* If we reach here huh? */
1288 SCTP_PRINTF("Unknown it ctl flag %x\n",
1289 sctp_it_ctl.iterator_flags);
1290 sctp_it_ctl.iterator_flags = 0;
1292 SCTP_INP_RLOCK(it->inp);
1293 SCTP_INP_DECR_REF(it->inp);
1294 SCTP_TCB_LOCK(it->stcb);
1295 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1296 iteration_count = 0;
1298 /* run function on this one */
1299 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1302 * we lie here, it really needs to have its own type but
1303 * first I must verify that this won't effect things :-0
1305 if (it->no_chunk_output == 0)
1306 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1308 SCTP_TCB_UNLOCK(it->stcb);
1310 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1311 if (it->stcb == NULL) {
1312 /* Run last function */
1313 if (it->function_inp_end != NULL) {
1314 inp_skip = (*it->function_inp_end) (it->inp,
1320 SCTP_INP_RUNLOCK(it->inp);
1322 /* done with all assocs on this endpoint, move on to next endpoint */
1323 it->done_current_ep = 0;
1324 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1327 it->inp = LIST_NEXT(it->inp, sctp_list);
1329 if (it->inp == NULL) {
1330 goto done_with_iterator;
1332 goto select_a_new_ep;
1336 sctp_iterator_worker(void)
1338 struct sctp_iterator *it, *nit;
1340 /* This function is called with the WQ lock in place */
1342 sctp_it_ctl.iterator_running = 1;
1343 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1344 sctp_it_ctl.cur_it = it;
1345 /* now lets work on this one */
1346 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1347 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1348 CURVNET_SET(it->vn);
1349 sctp_iterator_work(it);
1350 sctp_it_ctl.cur_it = NULL;
1352 SCTP_IPI_ITERATOR_WQ_LOCK();
1353 /* sa_ignore FREED_MEMORY */
1355 sctp_it_ctl.iterator_running = 0;
1361 sctp_handle_addr_wq(void)
1363 /* deal with the ADDR wq from the rtsock calls */
1364 struct sctp_laddr *wi, *nwi;
1365 struct sctp_asconf_iterator *asc;
1367 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1368 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1370 /* Try later, no memory */
1371 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1372 (struct sctp_inpcb *)NULL,
1373 (struct sctp_tcb *)NULL,
1374 (struct sctp_nets *)NULL);
1377 LIST_INIT(&asc->list_of_work);
1380 SCTP_WQ_ADDR_LOCK();
1381 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1382 LIST_REMOVE(wi, sctp_nxt_addr);
1383 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1386 SCTP_WQ_ADDR_UNLOCK();
1388 if (asc->cnt == 0) {
1389 SCTP_FREE(asc, SCTP_M_ASC_IT);
1391 (void)sctp_initiate_iterator(sctp_asconf_iterator_ep,
1392 sctp_asconf_iterator_stcb,
1393 NULL, /* No ep end for boundall */
1394 SCTP_PCB_FLAGS_BOUNDALL,
1395 SCTP_PCB_ANY_FEATURES,
1396 SCTP_ASOC_ANY_STATE,
1398 sctp_asconf_iterator_end, NULL, 0);
1403 sctp_timeout_handler(void *t)
1405 struct sctp_inpcb *inp;
1406 struct sctp_tcb *stcb;
1407 struct sctp_nets *net;
1408 struct sctp_timer *tmr;
1410 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1414 int did_output, type;
1416 tmr = (struct sctp_timer *)t;
1417 inp = (struct sctp_inpcb *)tmr->ep;
1418 stcb = (struct sctp_tcb *)tmr->tcb;
1419 net = (struct sctp_nets *)tmr->net;
1420 CURVNET_SET((struct vnet *)tmr->vnet);
1423 #ifdef SCTP_AUDITING_ENABLED
1424 sctp_audit_log(0xF0, (uint8_t) tmr->type);
1425 sctp_auditing(3, inp, stcb, net);
1428 /* sanity checks... */
1429 if (tmr->self != (void *)tmr) {
1431 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1437 tmr->stopped_from = 0xa001;
1438 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1440 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1446 tmr->stopped_from = 0xa002;
1447 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1451 /* if this is an iterator timeout, get the struct and clear inp */
1452 tmr->stopped_from = 0xa003;
1455 SCTP_INP_INCR_REF(inp);
1456 if ((inp->sctp_socket == NULL) &&
1457 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1458 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1459 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1460 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1461 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1462 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1463 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1464 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1465 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1467 SCTP_INP_DECR_REF(inp);
1472 tmr->stopped_from = 0xa004;
1474 atomic_add_int(&stcb->asoc.refcnt, 1);
1475 if (stcb->asoc.state == 0) {
1476 atomic_add_int(&stcb->asoc.refcnt, -1);
1478 SCTP_INP_DECR_REF(inp);
1484 tmr->stopped_from = 0xa005;
1485 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", tmr->type);
1486 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1488 SCTP_INP_DECR_REF(inp);
1491 atomic_add_int(&stcb->asoc.refcnt, -1);
1496 tmr->stopped_from = 0xa006;
1499 SCTP_TCB_LOCK(stcb);
1500 atomic_add_int(&stcb->asoc.refcnt, -1);
1501 if ((tmr->type != SCTP_TIMER_TYPE_ASOCKILL) &&
1502 ((stcb->asoc.state == 0) ||
1503 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1504 SCTP_TCB_UNLOCK(stcb);
1506 SCTP_INP_DECR_REF(inp);
1512 /* record in stopped what t-o occured */
1513 tmr->stopped_from = tmr->type;
1515 /* mark as being serviced now */
1516 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1518 * Callout has been rescheduled.
1522 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1524 * Not active, so no action.
1528 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1530 /* call the handler for the appropriate timer type */
1531 switch (tmr->type) {
1532 case SCTP_TIMER_TYPE_ZERO_COPY:
1536 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1537 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1540 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1544 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1545 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1548 case SCTP_TIMER_TYPE_ADDR_WQ:
1549 sctp_handle_addr_wq();
1551 case SCTP_TIMER_TYPE_SEND:
1552 if ((stcb == NULL) || (inp == NULL)) {
1555 SCTP_STAT_INCR(sctps_timodata);
1556 stcb->asoc.timodata++;
1557 stcb->asoc.num_send_timers_up--;
1558 if (stcb->asoc.num_send_timers_up < 0) {
1559 stcb->asoc.num_send_timers_up = 0;
1561 SCTP_TCB_LOCK_ASSERT(stcb);
1562 if (sctp_t3rxt_timer(inp, stcb, net)) {
1563 /* no need to unlock on tcb its gone */
1567 SCTP_TCB_LOCK_ASSERT(stcb);
1568 #ifdef SCTP_AUDITING_ENABLED
1569 sctp_auditing(4, inp, stcb, net);
1571 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1572 if ((stcb->asoc.num_send_timers_up == 0) &&
1573 (stcb->asoc.sent_queue_cnt > 0)) {
1574 struct sctp_tmit_chunk *chk;
1577 * safeguard. If there on some on the sent queue
1578 * somewhere but no timers running something is
1579 * wrong... so we start a timer on the first chunk
1580 * on the send queue on whatever net it is sent to.
1582 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1583 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1587 case SCTP_TIMER_TYPE_INIT:
1588 if ((stcb == NULL) || (inp == NULL)) {
1591 SCTP_STAT_INCR(sctps_timoinit);
1592 stcb->asoc.timoinit++;
1593 if (sctp_t1init_timer(inp, stcb, net)) {
1594 /* no need to unlock on tcb its gone */
1597 /* We do output but not here */
1600 case SCTP_TIMER_TYPE_RECV:
1601 if ((stcb == NULL) || (inp == NULL)) {
1604 SCTP_STAT_INCR(sctps_timosack);
1605 stcb->asoc.timosack++;
1606 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1607 #ifdef SCTP_AUDITING_ENABLED
1608 sctp_auditing(4, inp, stcb, net);
1610 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1612 case SCTP_TIMER_TYPE_SHUTDOWN:
1613 if ((stcb == NULL) || (inp == NULL)) {
1616 if (sctp_shutdown_timer(inp, stcb, net)) {
1617 /* no need to unlock on tcb its gone */
1620 SCTP_STAT_INCR(sctps_timoshutdown);
1621 stcb->asoc.timoshutdown++;
1622 #ifdef SCTP_AUDITING_ENABLED
1623 sctp_auditing(4, inp, stcb, net);
1625 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1627 case SCTP_TIMER_TYPE_HEARTBEAT:
1628 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1631 SCTP_STAT_INCR(sctps_timoheartbeat);
1632 stcb->asoc.timoheartbeat++;
1633 if (sctp_heartbeat_timer(inp, stcb, net)) {
1634 /* no need to unlock on tcb its gone */
1637 #ifdef SCTP_AUDITING_ENABLED
1638 sctp_auditing(4, inp, stcb, net);
1640 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1641 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1642 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1645 case SCTP_TIMER_TYPE_COOKIE:
1646 if ((stcb == NULL) || (inp == NULL)) {
1649 if (sctp_cookie_timer(inp, stcb, net)) {
1650 /* no need to unlock on tcb its gone */
1653 SCTP_STAT_INCR(sctps_timocookie);
1654 stcb->asoc.timocookie++;
1655 #ifdef SCTP_AUDITING_ENABLED
1656 sctp_auditing(4, inp, stcb, net);
1659 * We consider T3 and Cookie timer pretty much the same with
1660 * respect to where from in chunk_output.
1662 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1664 case SCTP_TIMER_TYPE_NEWCOOKIE:
1672 SCTP_STAT_INCR(sctps_timosecret);
1673 (void)SCTP_GETTIME_TIMEVAL(&tv);
1674 SCTP_INP_WLOCK(inp);
1675 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1676 inp->sctp_ep.last_secret_number =
1677 inp->sctp_ep.current_secret_number;
1678 inp->sctp_ep.current_secret_number++;
1679 if (inp->sctp_ep.current_secret_number >=
1680 SCTP_HOW_MANY_SECRETS) {
1681 inp->sctp_ep.current_secret_number = 0;
1683 secret = (int)inp->sctp_ep.current_secret_number;
1684 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1685 inp->sctp_ep.secret_key[secret][i] =
1686 sctp_select_initial_TSN(&inp->sctp_ep);
1688 SCTP_INP_WUNLOCK(inp);
1689 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1693 case SCTP_TIMER_TYPE_PATHMTURAISE:
1694 if ((stcb == NULL) || (inp == NULL)) {
1697 SCTP_STAT_INCR(sctps_timopathmtu);
1698 sctp_pathmtu_timer(inp, stcb, net);
1701 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1702 if ((stcb == NULL) || (inp == NULL)) {
1705 if (sctp_shutdownack_timer(inp, stcb, net)) {
1706 /* no need to unlock on tcb its gone */
1709 SCTP_STAT_INCR(sctps_timoshutdownack);
1710 stcb->asoc.timoshutdownack++;
1711 #ifdef SCTP_AUDITING_ENABLED
1712 sctp_auditing(4, inp, stcb, net);
1714 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1716 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1717 if ((stcb == NULL) || (inp == NULL)) {
1720 SCTP_STAT_INCR(sctps_timoshutdownguard);
1721 sctp_abort_an_association(inp, stcb, NULL, SCTP_SO_NOT_LOCKED);
1722 /* no need to unlock on tcb its gone */
1725 case SCTP_TIMER_TYPE_STRRESET:
1726 if ((stcb == NULL) || (inp == NULL)) {
1729 if (sctp_strreset_timer(inp, stcb, net)) {
1730 /* no need to unlock on tcb its gone */
1733 SCTP_STAT_INCR(sctps_timostrmrst);
1734 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1736 case SCTP_TIMER_TYPE_ASCONF:
1737 if ((stcb == NULL) || (inp == NULL)) {
1740 if (sctp_asconf_timer(inp, stcb, net)) {
1741 /* no need to unlock on tcb its gone */
1744 SCTP_STAT_INCR(sctps_timoasconf);
1745 #ifdef SCTP_AUDITING_ENABLED
1746 sctp_auditing(4, inp, stcb, net);
1748 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1750 case SCTP_TIMER_TYPE_PRIM_DELETED:
1751 if ((stcb == NULL) || (inp == NULL)) {
1754 sctp_delete_prim_timer(inp, stcb, net);
1755 SCTP_STAT_INCR(sctps_timodelprim);
1758 case SCTP_TIMER_TYPE_AUTOCLOSE:
1759 if ((stcb == NULL) || (inp == NULL)) {
1762 SCTP_STAT_INCR(sctps_timoautoclose);
1763 sctp_autoclose_timer(inp, stcb, net);
1764 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1767 case SCTP_TIMER_TYPE_ASOCKILL:
1768 if ((stcb == NULL) || (inp == NULL)) {
1771 SCTP_STAT_INCR(sctps_timoassockill);
1772 /* Can we free it yet? */
1773 SCTP_INP_DECR_REF(inp);
1774 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1775 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1776 so = SCTP_INP_SO(inp);
1777 atomic_add_int(&stcb->asoc.refcnt, 1);
1778 SCTP_TCB_UNLOCK(stcb);
1779 SCTP_SOCKET_LOCK(so, 1);
1780 SCTP_TCB_LOCK(stcb);
1781 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1783 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1784 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1785 SCTP_SOCKET_UNLOCK(so, 1);
1788 * free asoc, always unlocks (or destroy's) so prevent
1789 * duplicate unlock or unlock of a free mtx :-0
1793 case SCTP_TIMER_TYPE_INPKILL:
1794 SCTP_STAT_INCR(sctps_timoinpkill);
1799 * special case, take away our increment since WE are the
1802 SCTP_INP_DECR_REF(inp);
1803 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1804 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1805 SCTP_CALLED_FROM_INPKILL_TIMER);
1809 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1813 #ifdef SCTP_AUDITING_ENABLED
1814 sctp_audit_log(0xF1, (uint8_t) tmr->type);
1816 sctp_auditing(5, inp, stcb, net);
1818 if ((did_output) && stcb) {
1820 * Now we need to clean up the control chunk chain if an
1821 * ECNE is on it. It must be marked as UNSENT again so next
1822 * call will continue to send it until such time that we get
1823 * a CWR, to remove it. It is, however, less likely that we
1824 * will find a ecn echo on the chain though.
1826 sctp_fix_ecn_echo(&stcb->asoc);
1830 SCTP_TCB_UNLOCK(stcb);
1834 SCTP_INP_DECR_REF(inp);
1837 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type %d)\n",
1843 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1844 struct sctp_nets *net)
1847 struct sctp_timer *tmr;
1849 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1854 SCTP_TCB_LOCK_ASSERT(stcb);
1857 case SCTP_TIMER_TYPE_ZERO_COPY:
1858 tmr = &inp->sctp_ep.zero_copy_timer;
1859 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1861 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1862 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1863 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1865 case SCTP_TIMER_TYPE_ADDR_WQ:
1866 /* Only 1 tick away :-) */
1867 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1868 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1870 case SCTP_TIMER_TYPE_SEND:
1871 /* Here we use the RTO timer */
1875 if ((stcb == NULL) || (net == NULL)) {
1878 tmr = &net->rxt_timer;
1879 if (net->RTO == 0) {
1880 rto_val = stcb->asoc.initial_rto;
1884 to_ticks = MSEC_TO_TICKS(rto_val);
1887 case SCTP_TIMER_TYPE_INIT:
1889 * Here we use the INIT timer default usually about 1
1892 if ((stcb == NULL) || (net == NULL)) {
1895 tmr = &net->rxt_timer;
1896 if (net->RTO == 0) {
1897 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1899 to_ticks = MSEC_TO_TICKS(net->RTO);
1902 case SCTP_TIMER_TYPE_RECV:
1904 * Here we use the Delayed-Ack timer value from the inp
1905 * ususually about 200ms.
1910 tmr = &stcb->asoc.dack_timer;
1911 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
1913 case SCTP_TIMER_TYPE_SHUTDOWN:
1914 /* Here we use the RTO of the destination. */
1915 if ((stcb == NULL) || (net == NULL)) {
1918 if (net->RTO == 0) {
1919 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1921 to_ticks = MSEC_TO_TICKS(net->RTO);
1923 tmr = &net->rxt_timer;
1925 case SCTP_TIMER_TYPE_HEARTBEAT:
1927 * the net is used here so that we can add in the RTO. Even
1928 * though we use a different timer. We also add the HB timer
1929 * PLUS a random jitter.
1931 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
1937 if ((net->dest_state & SCTP_ADDR_NOHB) &&
1938 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
1941 if (net->RTO == 0) {
1942 to_ticks = stcb->asoc.initial_rto;
1944 to_ticks = net->RTO;
1946 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
1947 jitter = rndval % to_ticks;
1948 if (jitter >= (to_ticks >> 1)) {
1949 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
1951 to_ticks = to_ticks - jitter;
1953 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
1954 !(net->dest_state & SCTP_ADDR_PF)) {
1955 to_ticks += net->heart_beat_delay;
1958 * Now we must convert the to_ticks that are now in
1961 to_ticks = MSEC_TO_TICKS(to_ticks);
1962 tmr = &net->hb_timer;
1965 case SCTP_TIMER_TYPE_COOKIE:
1967 * Here we can use the RTO timer from the network since one
1968 * RTT was compelete. If a retran happened then we will be
1969 * using the RTO initial value.
1971 if ((stcb == NULL) || (net == NULL)) {
1974 if (net->RTO == 0) {
1975 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1977 to_ticks = MSEC_TO_TICKS(net->RTO);
1979 tmr = &net->rxt_timer;
1981 case SCTP_TIMER_TYPE_NEWCOOKIE:
1983 * nothing needed but the endpoint here ususually about 60
1989 tmr = &inp->sctp_ep.signature_change;
1990 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
1992 case SCTP_TIMER_TYPE_ASOCKILL:
1996 tmr = &stcb->asoc.strreset_timer;
1997 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
1999 case SCTP_TIMER_TYPE_INPKILL:
2001 * The inp is setup to die. We re-use the signature_chage
2002 * timer since that has stopped and we are in the GONE
2008 tmr = &inp->sctp_ep.signature_change;
2009 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2011 case SCTP_TIMER_TYPE_PATHMTURAISE:
2013 * Here we use the value found in the EP for PMTU ususually
2016 if ((stcb == NULL) || (inp == NULL)) {
2022 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2025 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2026 tmr = &net->pmtu_timer;
2028 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2029 /* Here we use the RTO of the destination */
2030 if ((stcb == NULL) || (net == NULL)) {
2033 if (net->RTO == 0) {
2034 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2036 to_ticks = MSEC_TO_TICKS(net->RTO);
2038 tmr = &net->rxt_timer;
2040 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2042 * Here we use the endpoints shutdown guard timer usually
2045 if ((inp == NULL) || (stcb == NULL)) {
2048 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2049 tmr = &stcb->asoc.shut_guard_timer;
2051 case SCTP_TIMER_TYPE_STRRESET:
2053 * Here the timer comes from the stcb but its value is from
2056 if ((stcb == NULL) || (net == NULL)) {
2059 if (net->RTO == 0) {
2060 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2062 to_ticks = MSEC_TO_TICKS(net->RTO);
2064 tmr = &stcb->asoc.strreset_timer;
2066 case SCTP_TIMER_TYPE_ASCONF:
2068 * Here the timer comes from the stcb but its value is from
2071 if ((stcb == NULL) || (net == NULL)) {
2074 if (net->RTO == 0) {
2075 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2077 to_ticks = MSEC_TO_TICKS(net->RTO);
2079 tmr = &stcb->asoc.asconf_timer;
2081 case SCTP_TIMER_TYPE_PRIM_DELETED:
2082 if ((stcb == NULL) || (net != NULL)) {
2085 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2086 tmr = &stcb->asoc.delete_prim_timer;
2088 case SCTP_TIMER_TYPE_AUTOCLOSE:
2092 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2094 * Really an error since stcb is NOT set to
2099 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2100 tmr = &stcb->asoc.autoclose_timer;
2103 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2104 __FUNCTION__, t_type);
2108 if ((to_ticks <= 0) || (tmr == NULL)) {
2109 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2110 __FUNCTION__, t_type, to_ticks, (void *)tmr);
2113 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2115 * we do NOT allow you to have it already running. if it is
2116 * we leave the current one up unchanged
2120 /* At this point we can proceed */
2121 if (t_type == SCTP_TIMER_TYPE_SEND) {
2122 stcb->asoc.num_send_timers_up++;
2124 tmr->stopped_from = 0;
2126 tmr->ep = (void *)inp;
2127 tmr->tcb = (void *)stcb;
2128 tmr->net = (void *)net;
2129 tmr->self = (void *)tmr;
2130 tmr->vnet = (void *)curvnet;
2131 tmr->ticks = sctp_get_tick_count();
2132 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2137 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2138 struct sctp_nets *net, uint32_t from)
2140 struct sctp_timer *tmr;
2142 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2148 SCTP_TCB_LOCK_ASSERT(stcb);
2151 case SCTP_TIMER_TYPE_ZERO_COPY:
2152 tmr = &inp->sctp_ep.zero_copy_timer;
2154 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2155 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2157 case SCTP_TIMER_TYPE_ADDR_WQ:
2158 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2160 case SCTP_TIMER_TYPE_SEND:
2161 if ((stcb == NULL) || (net == NULL)) {
2164 tmr = &net->rxt_timer;
2166 case SCTP_TIMER_TYPE_INIT:
2167 if ((stcb == NULL) || (net == NULL)) {
2170 tmr = &net->rxt_timer;
2172 case SCTP_TIMER_TYPE_RECV:
2176 tmr = &stcb->asoc.dack_timer;
2178 case SCTP_TIMER_TYPE_SHUTDOWN:
2179 if ((stcb == NULL) || (net == NULL)) {
2182 tmr = &net->rxt_timer;
2184 case SCTP_TIMER_TYPE_HEARTBEAT:
2185 if ((stcb == NULL) || (net == NULL)) {
2188 tmr = &net->hb_timer;
2190 case SCTP_TIMER_TYPE_COOKIE:
2191 if ((stcb == NULL) || (net == NULL)) {
2194 tmr = &net->rxt_timer;
2196 case SCTP_TIMER_TYPE_NEWCOOKIE:
2197 /* nothing needed but the endpoint here */
2198 tmr = &inp->sctp_ep.signature_change;
2200 * We re-use the newcookie timer for the INP kill timer. We
2201 * must assure that we do not kill it by accident.
2204 case SCTP_TIMER_TYPE_ASOCKILL:
2206 * Stop the asoc kill timer.
2211 tmr = &stcb->asoc.strreset_timer;
2214 case SCTP_TIMER_TYPE_INPKILL:
2216 * The inp is setup to die. We re-use the signature_chage
2217 * timer since that has stopped and we are in the GONE
2220 tmr = &inp->sctp_ep.signature_change;
2222 case SCTP_TIMER_TYPE_PATHMTURAISE:
2223 if ((stcb == NULL) || (net == NULL)) {
2226 tmr = &net->pmtu_timer;
2228 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2229 if ((stcb == NULL) || (net == NULL)) {
2232 tmr = &net->rxt_timer;
2234 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2238 tmr = &stcb->asoc.shut_guard_timer;
2240 case SCTP_TIMER_TYPE_STRRESET:
2244 tmr = &stcb->asoc.strreset_timer;
2246 case SCTP_TIMER_TYPE_ASCONF:
2250 tmr = &stcb->asoc.asconf_timer;
2252 case SCTP_TIMER_TYPE_PRIM_DELETED:
2256 tmr = &stcb->asoc.delete_prim_timer;
2258 case SCTP_TIMER_TYPE_AUTOCLOSE:
2262 tmr = &stcb->asoc.autoclose_timer;
2265 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2266 __FUNCTION__, t_type);
2272 if ((tmr->type != t_type) && tmr->type) {
2274 * Ok we have a timer that is under joint use. Cookie timer
2275 * per chance with the SEND timer. We therefore are NOT
2276 * running the timer that the caller wants stopped. So just
2281 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2282 stcb->asoc.num_send_timers_up--;
2283 if (stcb->asoc.num_send_timers_up < 0) {
2284 stcb->asoc.num_send_timers_up = 0;
2288 tmr->stopped_from = from;
2289 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2294 sctp_calculate_len(struct mbuf *m)
2301 tlen += SCTP_BUF_LEN(at);
2302 at = SCTP_BUF_NEXT(at);
2308 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2309 struct sctp_association *asoc, uint32_t mtu)
2312 * Reset the P-MTU size on this association, this involves changing
2313 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2314 * allow the DF flag to be cleared.
2316 struct sctp_tmit_chunk *chk;
2317 unsigned int eff_mtu, ovh;
2319 asoc->smallest_mtu = mtu;
2320 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2321 ovh = SCTP_MIN_OVERHEAD;
2323 ovh = SCTP_MIN_V4_OVERHEAD;
2325 eff_mtu = mtu - ovh;
2326 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2327 if (chk->send_size > eff_mtu) {
2328 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2331 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2332 if (chk->send_size > eff_mtu) {
2333 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2340 * given an association and starting time of the current RTT period return
2341 * RTO in number of msecs net should point to the current network
2345 sctp_calculate_rto(struct sctp_tcb *stcb,
2346 struct sctp_association *asoc,
2347 struct sctp_nets *net,
2348 struct timeval *told,
2349 int safe, int rtt_from_sack)
2352 * given an association and the starting time of the current RTT
2353 * period (in value1/value2) return RTO in number of msecs.
2355 int32_t rtt; /* RTT in ms */
2357 int first_measure = 0;
2358 struct timeval now, then, *old;
2360 /* Copy it out for sparc64 */
2361 if (safe == sctp_align_unsafe_makecopy) {
2363 memcpy(&then, told, sizeof(struct timeval));
2364 } else if (safe == sctp_align_safe_nocopy) {
2368 SCTP_PRINTF("Huh, bad rto calc call\n");
2371 /************************/
2372 /* 1. calculate new RTT */
2373 /************************/
2374 /* get the current time */
2375 if (stcb->asoc.use_precise_time) {
2376 (void)SCTP_GETPTIME_TIMEVAL(&now);
2378 (void)SCTP_GETTIME_TIMEVAL(&now);
2380 timevalsub(&now, old);
2381 /* store the current RTT in us */
2382 net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec +
2383 (uint64_t) now.tv_usec;
2385 /* computer rtt in ms */
2386 rtt = net->rtt / 1000;
2387 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2389 * Tell the CC module that a new update has just occurred
2392 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2395 * Do we need to determine the lan? We do this only on sacks i.e.
2396 * RTT being determined from data not non-data (HB/INIT->INITACK).
2398 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2399 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2400 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2401 net->lan_type = SCTP_LAN_INTERNET;
2403 net->lan_type = SCTP_LAN_LOCAL;
2406 /***************************/
2407 /* 2. update RTTVAR & SRTT */
2408 /***************************/
2410 * Compute the scaled average lastsa and the
2411 * scaled variance lastsv as described in van Jacobson
2412 * Paper "Congestion Avoidance and Control", Annex A.
2414 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2415 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2417 if (net->RTO_measured) {
2418 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2423 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2425 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2426 rto_logging(net, SCTP_LOG_RTTVAR);
2429 /* First RTO measurment */
2430 net->RTO_measured = 1;
2432 net->lastsa = rtt << SCTP_RTT_SHIFT;
2433 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2434 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2435 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2438 if (net->lastsv == 0) {
2439 net->lastsv = SCTP_CLOCK_GRANULARITY;
2441 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2442 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2443 (stcb->asoc.sat_network_lockout == 0)) {
2444 stcb->asoc.sat_network = 1;
2445 } else if ((!first_measure) && stcb->asoc.sat_network) {
2446 stcb->asoc.sat_network = 0;
2447 stcb->asoc.sat_network_lockout = 1;
2449 /* bound it, per C6/C7 in Section 5.3.1 */
2450 if (new_rto < stcb->asoc.minrto) {
2451 new_rto = stcb->asoc.minrto;
2453 if (new_rto > stcb->asoc.maxrto) {
2454 new_rto = stcb->asoc.maxrto;
2456 /* we are now returning the RTO */
2461 * return a pointer to a contiguous piece of data from the given mbuf chain
2462 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2463 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2464 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2467 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
2473 if ((off < 0) || (len <= 0))
2476 /* find the desired start location */
2477 while ((m != NULL) && (off > 0)) {
2478 if (off < SCTP_BUF_LEN(m))
2480 off -= SCTP_BUF_LEN(m);
2481 m = SCTP_BUF_NEXT(m);
2486 /* is the current mbuf large enough (eg. contiguous)? */
2487 if ((SCTP_BUF_LEN(m) - off) >= len) {
2488 return (mtod(m, caddr_t)+off);
2490 /* else, it spans more than one mbuf, so save a temp copy... */
2491 while ((m != NULL) && (len > 0)) {
2492 count = min(SCTP_BUF_LEN(m) - off, len);
2493 bcopy(mtod(m, caddr_t)+off, ptr, count);
2497 m = SCTP_BUF_NEXT(m);
2499 if ((m == NULL) && (len > 0))
2502 return ((caddr_t)in_ptr);
2508 struct sctp_paramhdr *
2509 sctp_get_next_param(struct mbuf *m,
2511 struct sctp_paramhdr *pull,
2514 /* This just provides a typed signature to Peter's Pull routine */
2515 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2521 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2523 struct mbuf *m_last;
2529 if (padlen <= M_TRAILINGSPACE(m)) {
2531 * The easy way. We hope the majority of the time we hit
2536 /* Hard way we must grow the mbuf chain */
2537 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2538 if (m_last == NULL) {
2541 SCTP_BUF_LEN(m_last) = 0;
2542 SCTP_BUF_NEXT(m_last) = NULL;
2543 SCTP_BUF_NEXT(m) = m_last;
2545 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2546 SCTP_BUF_LEN(m_last) += padlen;
2547 memset(dp, 0, padlen);
2552 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2554 /* find the last mbuf in chain and pad it */
2557 if (last_mbuf != NULL) {
2558 return (sctp_add_pad_tombuf(last_mbuf, padval));
2560 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2561 if (SCTP_BUF_NEXT(m_at) == NULL) {
2562 return (sctp_add_pad_tombuf(m_at, padval));
2570 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2571 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2572 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2577 struct mbuf *m_notify;
2578 struct sctp_assoc_change *sac;
2579 struct sctp_queued_to_read *control;
2580 size_t notif_len, abort_len;
2583 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2588 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2589 notif_len = sizeof(struct sctp_assoc_change);
2590 if (abort != NULL) {
2591 abort_len = ntohs(abort->ch.chunk_length);
2595 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2596 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2597 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2598 notif_len += abort_len;
2600 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2601 if (m_notify == NULL) {
2602 /* Retry with smaller value. */
2603 notif_len = sizeof(struct sctp_assoc_change);
2604 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2605 if (m_notify == NULL) {
2609 SCTP_BUF_NEXT(m_notify) = NULL;
2610 sac = mtod(m_notify, struct sctp_assoc_change *);
2611 memset(sac, 0, notif_len);
2612 sac->sac_type = SCTP_ASSOC_CHANGE;
2614 sac->sac_length = sizeof(struct sctp_assoc_change);
2615 sac->sac_state = state;
2616 sac->sac_error = error;
2617 /* XXX verify these stream counts */
2618 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2619 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2620 sac->sac_assoc_id = sctp_get_associd(stcb);
2621 if (notif_len > sizeof(struct sctp_assoc_change)) {
2622 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2624 if (stcb->asoc.prsctp_supported) {
2625 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2627 if (stcb->asoc.peer_supports_auth) {
2628 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2630 if (stcb->asoc.peer_supports_asconf) {
2631 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2633 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2634 if (stcb->asoc.peer_supports_strreset) {
2635 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2637 sac->sac_length += i;
2638 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2639 memcpy(sac->sac_info, abort, abort_len);
2640 sac->sac_length += abort_len;
2643 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2644 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2645 0, 0, stcb->asoc.context, 0, 0, 0,
2647 if (control != NULL) {
2648 control->length = SCTP_BUF_LEN(m_notify);
2649 /* not that we need this */
2650 control->tail_mbuf = m_notify;
2651 control->spec_flags = M_NOTIFICATION;
2652 sctp_add_to_readq(stcb->sctp_ep, stcb,
2654 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2657 sctp_m_freem(m_notify);
2661 * For 1-to-1 style sockets, we send up and error when an ABORT
2665 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2666 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2667 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2668 SOCK_LOCK(stcb->sctp_socket);
2670 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2671 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2672 stcb->sctp_socket->so_error = ECONNREFUSED;
2674 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2675 stcb->sctp_socket->so_error = ECONNRESET;
2678 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2679 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2680 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2681 stcb->sctp_socket->so_error = ETIMEDOUT;
2683 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2684 stcb->sctp_socket->so_error = ECONNABORTED;
2688 /* Wake ANY sleepers */
2689 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2690 so = SCTP_INP_SO(stcb->sctp_ep);
2692 atomic_add_int(&stcb->asoc.refcnt, 1);
2693 SCTP_TCB_UNLOCK(stcb);
2694 SCTP_SOCKET_LOCK(so, 1);
2695 SCTP_TCB_LOCK(stcb);
2696 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2697 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2698 SCTP_SOCKET_UNLOCK(so, 1);
2703 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2704 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2705 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2706 socantrcvmore_locked(stcb->sctp_socket);
2708 sorwakeup(stcb->sctp_socket);
2709 sowwakeup(stcb->sctp_socket);
2710 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2712 SCTP_SOCKET_UNLOCK(so, 1);
2718 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2719 struct sockaddr *sa, uint32_t error)
2721 struct mbuf *m_notify;
2722 struct sctp_paddr_change *spc;
2723 struct sctp_queued_to_read *control;
2725 if ((stcb == NULL) ||
2726 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2727 /* event not enabled */
2730 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2731 if (m_notify == NULL)
2733 SCTP_BUF_LEN(m_notify) = 0;
2734 spc = mtod(m_notify, struct sctp_paddr_change *);
2735 memset(spc, 0, sizeof(struct sctp_paddr_change));
2736 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2738 spc->spc_length = sizeof(struct sctp_paddr_change);
2739 switch (sa->sa_family) {
2742 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2748 struct sockaddr_in6 *sin6;
2750 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2752 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2753 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2754 if (sin6->sin6_scope_id == 0) {
2755 /* recover scope_id for user */
2756 (void)sa6_recoverscope(sin6);
2758 /* clear embedded scope_id for user */
2759 in6_clearscope(&sin6->sin6_addr);
2769 spc->spc_state = state;
2770 spc->spc_error = error;
2771 spc->spc_assoc_id = sctp_get_associd(stcb);
2773 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2774 SCTP_BUF_NEXT(m_notify) = NULL;
2776 /* append to socket */
2777 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2778 0, 0, stcb->asoc.context, 0, 0, 0,
2780 if (control == NULL) {
2782 sctp_m_freem(m_notify);
2785 control->length = SCTP_BUF_LEN(m_notify);
2786 control->spec_flags = M_NOTIFICATION;
2787 /* not that we need this */
2788 control->tail_mbuf = m_notify;
2789 sctp_add_to_readq(stcb->sctp_ep, stcb,
2791 &stcb->sctp_socket->so_rcv, 1,
2792 SCTP_READ_LOCK_NOT_HELD,
2793 SCTP_SO_NOT_LOCKED);
2798 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2799 struct sctp_tmit_chunk *chk, int so_locked
2800 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2805 struct mbuf *m_notify;
2806 struct sctp_send_failed *ssf;
2807 struct sctp_send_failed_event *ssfe;
2808 struct sctp_queued_to_read *control;
2811 if ((stcb == NULL) ||
2812 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2813 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2814 /* event not enabled */
2817 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2818 length = sizeof(struct sctp_send_failed_event);
2820 length = sizeof(struct sctp_send_failed);
2822 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2823 if (m_notify == NULL)
2826 SCTP_BUF_LEN(m_notify) = 0;
2827 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2828 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2829 memset(ssfe, 0, length);
2830 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2832 ssfe->ssfe_flags = SCTP_DATA_SENT;
2834 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2836 length += chk->send_size;
2837 length -= sizeof(struct sctp_data_chunk);
2838 ssfe->ssfe_length = length;
2839 ssfe->ssfe_error = error;
2840 /* not exactly what the user sent in, but should be close :) */
2841 ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number;
2842 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2843 ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype;
2844 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2845 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2846 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2847 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2849 ssf = mtod(m_notify, struct sctp_send_failed *);
2850 memset(ssf, 0, length);
2851 ssf->ssf_type = SCTP_SEND_FAILED;
2853 ssf->ssf_flags = SCTP_DATA_SENT;
2855 ssf->ssf_flags = SCTP_DATA_UNSENT;
2857 length += chk->send_size;
2858 length -= sizeof(struct sctp_data_chunk);
2859 ssf->ssf_length = length;
2860 ssf->ssf_error = error;
2861 /* not exactly what the user sent in, but should be close :) */
2862 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2863 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2864 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2865 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2866 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2867 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2868 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2869 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2870 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2874 * trim off the sctp chunk header(it should be there)
2876 if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
2877 m_adj(chk->data, sizeof(struct sctp_data_chunk));
2878 sctp_mbuf_crush(chk->data);
2879 chk->send_size -= sizeof(struct sctp_data_chunk);
2882 SCTP_BUF_NEXT(m_notify) = chk->data;
2883 /* Steal off the mbuf */
2886 * For this case, we check the actual socket buffer, since the assoc
2887 * is going away we don't want to overfill the socket buffer for a
2890 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
2891 sctp_m_freem(m_notify);
2894 /* append to socket */
2895 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2896 0, 0, stcb->asoc.context, 0, 0, 0,
2898 if (control == NULL) {
2900 sctp_m_freem(m_notify);
2903 control->spec_flags = M_NOTIFICATION;
2904 sctp_add_to_readq(stcb->sctp_ep, stcb,
2906 &stcb->sctp_socket->so_rcv, 1,
2907 SCTP_READ_LOCK_NOT_HELD,
2913 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
2914 struct sctp_stream_queue_pending *sp, int so_locked
2915 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2920 struct mbuf *m_notify;
2921 struct sctp_send_failed *ssf;
2922 struct sctp_send_failed_event *ssfe;
2923 struct sctp_queued_to_read *control;
2926 if ((stcb == NULL) ||
2927 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2928 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2929 /* event not enabled */
2932 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2933 length = sizeof(struct sctp_send_failed_event);
2935 length = sizeof(struct sctp_send_failed);
2937 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2938 if (m_notify == NULL) {
2942 SCTP_BUF_LEN(m_notify) = 0;
2943 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2944 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2945 memset(ssfe, 0, length);
2946 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2947 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2948 length += sp->length;
2949 ssfe->ssfe_length = length;
2950 ssfe->ssfe_error = error;
2951 /* not exactly what the user sent in, but should be close :) */
2952 ssfe->ssfe_info.snd_sid = sp->stream;
2953 if (sp->some_taken) {
2954 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
2956 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
2958 ssfe->ssfe_info.snd_ppid = sp->ppid;
2959 ssfe->ssfe_info.snd_context = sp->context;
2960 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2961 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2962 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2964 ssf = mtod(m_notify, struct sctp_send_failed *);
2965 memset(ssf, 0, length);
2966 ssf->ssf_type = SCTP_SEND_FAILED;
2967 ssf->ssf_flags = SCTP_DATA_UNSENT;
2968 length += sp->length;
2969 ssf->ssf_length = length;
2970 ssf->ssf_error = error;
2971 /* not exactly what the user sent in, but should be close :) */
2972 ssf->ssf_info.sinfo_stream = sp->stream;
2973 ssf->ssf_info.sinfo_ssn = 0;
2974 if (sp->some_taken) {
2975 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
2977 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
2979 ssf->ssf_info.sinfo_ppid = sp->ppid;
2980 ssf->ssf_info.sinfo_context = sp->context;
2981 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2982 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2983 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2985 SCTP_BUF_NEXT(m_notify) = sp->data;
2987 /* Steal off the mbuf */
2990 * For this case, we check the actual socket buffer, since the assoc
2991 * is going away we don't want to overfill the socket buffer for a
2994 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
2995 sctp_m_freem(m_notify);
2998 /* append to socket */
2999 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3000 0, 0, stcb->asoc.context, 0, 0, 0,
3002 if (control == NULL) {
3004 sctp_m_freem(m_notify);
3007 control->spec_flags = M_NOTIFICATION;
3008 sctp_add_to_readq(stcb->sctp_ep, stcb,
3010 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3016 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3018 struct mbuf *m_notify;
3019 struct sctp_adaptation_event *sai;
3020 struct sctp_queued_to_read *control;
3022 if ((stcb == NULL) ||
3023 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3024 /* event not enabled */
3027 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3028 if (m_notify == NULL)
3031 SCTP_BUF_LEN(m_notify) = 0;
3032 sai = mtod(m_notify, struct sctp_adaptation_event *);
3033 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3034 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3036 sai->sai_length = sizeof(struct sctp_adaptation_event);
3037 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3038 sai->sai_assoc_id = sctp_get_associd(stcb);
3040 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3041 SCTP_BUF_NEXT(m_notify) = NULL;
3043 /* append to socket */
3044 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3045 0, 0, stcb->asoc.context, 0, 0, 0,
3047 if (control == NULL) {
3049 sctp_m_freem(m_notify);
3052 control->length = SCTP_BUF_LEN(m_notify);
3053 control->spec_flags = M_NOTIFICATION;
3054 /* not that we need this */
3055 control->tail_mbuf = m_notify;
3056 sctp_add_to_readq(stcb->sctp_ep, stcb,
3058 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3061 /* This always must be called with the read-queue LOCKED in the INP */
3063 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3064 uint32_t val, int so_locked
3065 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3070 struct mbuf *m_notify;
3071 struct sctp_pdapi_event *pdapi;
3072 struct sctp_queued_to_read *control;
3075 if ((stcb == NULL) ||
3076 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3077 /* event not enabled */
3080 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3083 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3084 if (m_notify == NULL)
3087 SCTP_BUF_LEN(m_notify) = 0;
3088 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3089 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3090 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3091 pdapi->pdapi_flags = 0;
3092 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3093 pdapi->pdapi_indication = error;
3094 pdapi->pdapi_stream = (val >> 16);
3095 pdapi->pdapi_seq = (val & 0x0000ffff);
3096 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3098 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3099 SCTP_BUF_NEXT(m_notify) = NULL;
3100 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3101 0, 0, stcb->asoc.context, 0, 0, 0,
3103 if (control == NULL) {
3105 sctp_m_freem(m_notify);
3108 control->spec_flags = M_NOTIFICATION;
3109 control->length = SCTP_BUF_LEN(m_notify);
3110 /* not that we need this */
3111 control->tail_mbuf = m_notify;
3112 control->held_length = 0;
3113 control->length = 0;
3114 sb = &stcb->sctp_socket->so_rcv;
3115 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3116 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3118 sctp_sballoc(stcb, sb, m_notify);
3119 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3120 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3122 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3123 control->end_added = 1;
3124 if (stcb->asoc.control_pdapi)
3125 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3127 /* we really should not see this case */
3128 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3130 if (stcb->sctp_ep && stcb->sctp_socket) {
3131 /* This should always be the case */
3132 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3135 so = SCTP_INP_SO(stcb->sctp_ep);
3137 atomic_add_int(&stcb->asoc.refcnt, 1);
3138 SCTP_TCB_UNLOCK(stcb);
3139 SCTP_SOCKET_LOCK(so, 1);
3140 SCTP_TCB_LOCK(stcb);
3141 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3142 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3143 SCTP_SOCKET_UNLOCK(so, 1);
3148 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3149 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3151 SCTP_SOCKET_UNLOCK(so, 1);
3158 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3160 struct mbuf *m_notify;
3161 struct sctp_shutdown_event *sse;
3162 struct sctp_queued_to_read *control;
3165 * For TCP model AND UDP connected sockets we will send an error up
3166 * when an SHUTDOWN completes
3168 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3169 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3170 /* mark socket closed for read/write and wakeup! */
3171 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3174 so = SCTP_INP_SO(stcb->sctp_ep);
3175 atomic_add_int(&stcb->asoc.refcnt, 1);
3176 SCTP_TCB_UNLOCK(stcb);
3177 SCTP_SOCKET_LOCK(so, 1);
3178 SCTP_TCB_LOCK(stcb);
3179 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3180 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3181 SCTP_SOCKET_UNLOCK(so, 1);
3185 socantsendmore(stcb->sctp_socket);
3186 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3187 SCTP_SOCKET_UNLOCK(so, 1);
3190 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3191 /* event not enabled */
3194 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3195 if (m_notify == NULL)
3198 sse = mtod(m_notify, struct sctp_shutdown_event *);
3199 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3200 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3202 sse->sse_length = sizeof(struct sctp_shutdown_event);
3203 sse->sse_assoc_id = sctp_get_associd(stcb);
3205 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3206 SCTP_BUF_NEXT(m_notify) = NULL;
3208 /* append to socket */
3209 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3210 0, 0, stcb->asoc.context, 0, 0, 0,
3212 if (control == NULL) {
3214 sctp_m_freem(m_notify);
3217 control->spec_flags = M_NOTIFICATION;
3218 control->length = SCTP_BUF_LEN(m_notify);
3219 /* not that we need this */
3220 control->tail_mbuf = m_notify;
3221 sctp_add_to_readq(stcb->sctp_ep, stcb,
3223 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3227 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3229 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3234 struct mbuf *m_notify;
3235 struct sctp_sender_dry_event *event;
3236 struct sctp_queued_to_read *control;
3238 if ((stcb == NULL) ||
3239 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3240 /* event not enabled */
3243 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3244 if (m_notify == NULL) {
3248 SCTP_BUF_LEN(m_notify) = 0;
3249 event = mtod(m_notify, struct sctp_sender_dry_event *);
3250 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3251 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3252 event->sender_dry_flags = 0;
3253 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3254 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3256 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3257 SCTP_BUF_NEXT(m_notify) = NULL;
3259 /* append to socket */
3260 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3261 0, 0, stcb->asoc.context, 0, 0, 0,
3263 if (control == NULL) {
3265 sctp_m_freem(m_notify);
3268 control->length = SCTP_BUF_LEN(m_notify);
3269 control->spec_flags = M_NOTIFICATION;
3270 /* not that we need this */
3271 control->tail_mbuf = m_notify;
3272 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3273 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3278 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3280 struct mbuf *m_notify;
3281 struct sctp_queued_to_read *control;
3282 struct sctp_stream_change_event *stradd;
3284 if ((stcb == NULL) ||
3285 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3286 /* event not enabled */
3289 if ((stcb->asoc.peer_req_out) && flag) {
3290 /* Peer made the request, don't tell the local user */
3291 stcb->asoc.peer_req_out = 0;
3294 stcb->asoc.peer_req_out = 0;
3295 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3296 if (m_notify == NULL)
3299 SCTP_BUF_LEN(m_notify) = 0;
3300 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3301 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3302 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3303 stradd->strchange_flags = flag;
3304 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3305 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3306 stradd->strchange_instrms = numberin;
3307 stradd->strchange_outstrms = numberout;
3308 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3309 SCTP_BUF_NEXT(m_notify) = NULL;
3310 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3312 sctp_m_freem(m_notify);
3315 /* append to socket */
3316 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3317 0, 0, stcb->asoc.context, 0, 0, 0,
3319 if (control == NULL) {
3321 sctp_m_freem(m_notify);
3324 control->spec_flags = M_NOTIFICATION;
3325 control->length = SCTP_BUF_LEN(m_notify);
3326 /* not that we need this */
3327 control->tail_mbuf = m_notify;
3328 sctp_add_to_readq(stcb->sctp_ep, stcb,
3330 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3334 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3336 struct mbuf *m_notify;
3337 struct sctp_queued_to_read *control;
3338 struct sctp_assoc_reset_event *strasoc;
3340 if ((stcb == NULL) ||
3341 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3342 /* event not enabled */
3345 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3346 if (m_notify == NULL)
3349 SCTP_BUF_LEN(m_notify) = 0;
3350 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3351 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3352 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3353 strasoc->assocreset_flags = flag;
3354 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3355 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3356 strasoc->assocreset_local_tsn = sending_tsn;
3357 strasoc->assocreset_remote_tsn = recv_tsn;
3358 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3359 SCTP_BUF_NEXT(m_notify) = NULL;
3360 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3362 sctp_m_freem(m_notify);
3365 /* append to socket */
3366 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3367 0, 0, stcb->asoc.context, 0, 0, 0,
3369 if (control == NULL) {
3371 sctp_m_freem(m_notify);
3374 control->spec_flags = M_NOTIFICATION;
3375 control->length = SCTP_BUF_LEN(m_notify);
3376 /* not that we need this */
3377 control->tail_mbuf = m_notify;
3378 sctp_add_to_readq(stcb->sctp_ep, stcb,
3380 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3386 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3387 int number_entries, uint16_t * list, int flag)
3389 struct mbuf *m_notify;
3390 struct sctp_queued_to_read *control;
3391 struct sctp_stream_reset_event *strreset;
3394 if ((stcb == NULL) ||
3395 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3396 /* event not enabled */
3399 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3400 if (m_notify == NULL)
3403 SCTP_BUF_LEN(m_notify) = 0;
3404 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3405 if (len > M_TRAILINGSPACE(m_notify)) {
3406 /* never enough room */
3407 sctp_m_freem(m_notify);
3410 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3411 memset(strreset, 0, len);
3412 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3413 strreset->strreset_flags = flag;
3414 strreset->strreset_length = len;
3415 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3416 if (number_entries) {
3419 for (i = 0; i < number_entries; i++) {
3420 strreset->strreset_stream_list[i] = ntohs(list[i]);
3423 SCTP_BUF_LEN(m_notify) = len;
3424 SCTP_BUF_NEXT(m_notify) = NULL;
3425 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3427 sctp_m_freem(m_notify);
3430 /* append to socket */
3431 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3432 0, 0, stcb->asoc.context, 0, 0, 0,
3434 if (control == NULL) {
3436 sctp_m_freem(m_notify);
3439 control->spec_flags = M_NOTIFICATION;
3440 control->length = SCTP_BUF_LEN(m_notify);
3441 /* not that we need this */
3442 control->tail_mbuf = m_notify;
3443 sctp_add_to_readq(stcb->sctp_ep, stcb,
3445 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3450 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3452 struct mbuf *m_notify;
3453 struct sctp_remote_error *sre;
3454 struct sctp_queued_to_read *control;
3455 size_t notif_len, chunk_len;
3457 if ((stcb == NULL) ||
3458 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3461 if (chunk != NULL) {
3462 chunk_len = ntohs(chunk->ch.chunk_length);
3466 notif_len = sizeof(struct sctp_remote_error) + chunk_len;
3467 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3468 if (m_notify == NULL) {
3469 /* Retry with smaller value. */
3470 notif_len = sizeof(struct sctp_remote_error);
3471 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3472 if (m_notify == NULL) {
3476 SCTP_BUF_NEXT(m_notify) = NULL;
3477 sre = mtod(m_notify, struct sctp_remote_error *);
3478 memset(sre, 0, notif_len);
3479 sre->sre_type = SCTP_REMOTE_ERROR;
3481 sre->sre_length = sizeof(struct sctp_remote_error);
3482 sre->sre_error = error;
3483 sre->sre_assoc_id = sctp_get_associd(stcb);
3484 if (notif_len > sizeof(struct sctp_remote_error)) {
3485 memcpy(sre->sre_data, chunk, chunk_len);
3486 sre->sre_length += chunk_len;
3488 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3489 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3490 0, 0, stcb->asoc.context, 0, 0, 0,
3492 if (control != NULL) {
3493 control->length = SCTP_BUF_LEN(m_notify);
3494 /* not that we need this */
3495 control->tail_mbuf = m_notify;
3496 control->spec_flags = M_NOTIFICATION;
3497 sctp_add_to_readq(stcb->sctp_ep, stcb,
3499 &stcb->sctp_socket->so_rcv, 1,
3500 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3502 sctp_m_freem(m_notify);
3508 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3509 uint32_t error, void *data, int so_locked
3510 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3515 if ((stcb == NULL) ||
3516 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3517 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3518 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3519 /* If the socket is gone we are out of here */
3522 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3525 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3526 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3527 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3528 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3529 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3530 /* Don't report these in front states */
3534 switch (notification) {
3535 case SCTP_NOTIFY_ASSOC_UP:
3536 if (stcb->asoc.assoc_up_sent == 0) {
3537 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3538 stcb->asoc.assoc_up_sent = 1;
3540 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3541 sctp_notify_adaptation_layer(stcb);
3543 if (stcb->asoc.peer_supports_auth == 0) {
3544 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3548 case SCTP_NOTIFY_ASSOC_DOWN:
3549 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3551 case SCTP_NOTIFY_INTERFACE_DOWN:
3553 struct sctp_nets *net;
3555 net = (struct sctp_nets *)data;
3556 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3557 (struct sockaddr *)&net->ro._l_addr, error);
3560 case SCTP_NOTIFY_INTERFACE_UP:
3562 struct sctp_nets *net;
3564 net = (struct sctp_nets *)data;
3565 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3566 (struct sockaddr *)&net->ro._l_addr, error);
3569 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3571 struct sctp_nets *net;
3573 net = (struct sctp_nets *)data;
3574 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3575 (struct sockaddr *)&net->ro._l_addr, error);
3578 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3579 sctp_notify_send_failed2(stcb, error,
3580 (struct sctp_stream_queue_pending *)data, so_locked);
3582 case SCTP_NOTIFY_SENT_DG_FAIL:
3583 sctp_notify_send_failed(stcb, 1, error,
3584 (struct sctp_tmit_chunk *)data, so_locked);
3586 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3587 sctp_notify_send_failed(stcb, 0, error,
3588 (struct sctp_tmit_chunk *)data, so_locked);
3590 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3594 val = *((uint32_t *) data);
3596 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3599 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3600 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3601 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3602 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3604 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3607 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3608 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3609 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3610 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3612 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3615 case SCTP_NOTIFY_ASSOC_RESTART:
3616 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3617 if (stcb->asoc.peer_supports_auth == 0) {
3618 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3622 case SCTP_NOTIFY_STR_RESET_SEND:
3623 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN);
3625 case SCTP_NOTIFY_STR_RESET_RECV:
3626 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING);
3628 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3629 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3630 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3632 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3633 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3634 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3636 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3637 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3638 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3640 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3641 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3642 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3644 case SCTP_NOTIFY_ASCONF_ADD_IP:
3645 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3648 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3649 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3652 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3653 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3656 case SCTP_NOTIFY_PEER_SHUTDOWN:
3657 sctp_notify_shutdown_event(stcb);
3659 case SCTP_NOTIFY_AUTH_NEW_KEY:
3660 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3661 (uint16_t) (uintptr_t) data,
3664 case SCTP_NOTIFY_AUTH_FREE_KEY:
3665 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3666 (uint16_t) (uintptr_t) data,
3669 case SCTP_NOTIFY_NO_PEER_AUTH:
3670 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3671 (uint16_t) (uintptr_t) data,
3674 case SCTP_NOTIFY_SENDER_DRY:
3675 sctp_notify_sender_dry_event(stcb, so_locked);
3677 case SCTP_NOTIFY_REMOTE_ERROR:
3678 sctp_notify_remote_error(stcb, error, data);
3681 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3682 __FUNCTION__, notification, notification);
3688 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3689 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3694 struct sctp_association *asoc;
3695 struct sctp_stream_out *outs;
3696 struct sctp_tmit_chunk *chk, *nchk;
3697 struct sctp_stream_queue_pending *sp, *nsp;
3704 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3705 /* already being freed */
3708 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3709 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3710 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3713 /* now through all the gunk freeing chunks */
3714 if (holds_lock == 0) {
3715 SCTP_TCB_SEND_LOCK(stcb);
3717 /* sent queue SHOULD be empty */
3718 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3719 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3720 asoc->sent_queue_cnt--;
3721 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3722 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3723 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3726 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3730 if (chk->data != NULL) {
3731 sctp_free_bufspace(stcb, asoc, chk, 1);
3732 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3733 error, chk, so_locked);
3735 sctp_m_freem(chk->data);
3739 sctp_free_a_chunk(stcb, chk, so_locked);
3740 /* sa_ignore FREED_MEMORY */
3742 /* pending send queue SHOULD be empty */
3743 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3744 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3745 asoc->send_queue_cnt--;
3746 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3747 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3750 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3753 if (chk->data != NULL) {
3754 sctp_free_bufspace(stcb, asoc, chk, 1);
3755 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3756 error, chk, so_locked);
3758 sctp_m_freem(chk->data);
3762 sctp_free_a_chunk(stcb, chk, so_locked);
3763 /* sa_ignore FREED_MEMORY */
3765 for (i = 0; i < asoc->streamoutcnt; i++) {
3766 /* For each stream */
3767 outs = &asoc->strmout[i];
3768 /* clean up any sends there */
3769 asoc->locked_on_sending = NULL;
3770 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3771 asoc->stream_queue_cnt--;
3772 TAILQ_REMOVE(&outs->outqueue, sp, next);
3773 sctp_free_spbufspace(stcb, asoc, sp);
3775 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3776 error, (void *)sp, so_locked);
3778 sctp_m_freem(sp->data);
3780 sp->tail_mbuf = NULL;
3785 sctp_free_remote_addr(sp->net);
3788 /* Free the chunk */
3789 sctp_free_a_strmoq(stcb, sp, so_locked);
3790 /* sa_ignore FREED_MEMORY */
3794 if (holds_lock == 0) {
3795 SCTP_TCB_SEND_UNLOCK(stcb);
3800 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3801 struct sctp_abort_chunk *abort, int so_locked
3802 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3810 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3811 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3812 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3813 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3815 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3816 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3817 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3820 /* Tell them we lost the asoc */
3821 sctp_report_all_outbound(stcb, error, 1, so_locked);
3823 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3825 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3830 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3831 struct mbuf *m, int iphlen,
3832 struct sockaddr *src, struct sockaddr *dst,
3833 struct sctphdr *sh, struct mbuf *op_err,
3834 uint8_t use_mflowid, uint32_t mflowid,
3835 uint32_t vrf_id, uint16_t port)
3839 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3846 /* We have a TCB to abort, send notification too */
3847 vtag = stcb->asoc.peer_vtag;
3848 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3849 /* get the assoc vrf id and table id */
3850 vrf_id = stcb->asoc.vrf_id;
3851 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3853 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3854 use_mflowid, mflowid,
3857 /* Ok, now lets free it */
3858 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3859 so = SCTP_INP_SO(inp);
3860 atomic_add_int(&stcb->asoc.refcnt, 1);
3861 SCTP_TCB_UNLOCK(stcb);
3862 SCTP_SOCKET_LOCK(so, 1);
3863 SCTP_TCB_LOCK(stcb);
3864 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3866 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3867 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3868 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3869 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3871 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
3872 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3873 SCTP_SOCKET_UNLOCK(so, 1);
3878 #ifdef SCTP_ASOCLOG_OF_TSNS
3880 sctp_print_out_track_log(struct sctp_tcb *stcb)
3885 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
3886 SCTP_PRINTF("IN bound TSN log-aaa\n");
3887 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
3888 SCTP_PRINTF("None rcvd\n");
3891 if (stcb->asoc.tsn_in_wrapped) {
3892 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
3893 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3894 stcb->asoc.in_tsnlog[i].tsn,
3895 stcb->asoc.in_tsnlog[i].strm,
3896 stcb->asoc.in_tsnlog[i].seq,
3897 stcb->asoc.in_tsnlog[i].flgs,
3898 stcb->asoc.in_tsnlog[i].sz);
3901 if (stcb->asoc.tsn_in_at) {
3902 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
3903 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3904 stcb->asoc.in_tsnlog[i].tsn,
3905 stcb->asoc.in_tsnlog[i].strm,
3906 stcb->asoc.in_tsnlog[i].seq,
3907 stcb->asoc.in_tsnlog[i].flgs,
3908 stcb->asoc.in_tsnlog[i].sz);
3912 SCTP_PRINTF("OUT bound TSN log-aaa\n");
3913 if ((stcb->asoc.tsn_out_at == 0) &&
3914 (stcb->asoc.tsn_out_wrapped == 0)) {
3915 SCTP_PRINTF("None sent\n");
3917 if (stcb->asoc.tsn_out_wrapped) {
3918 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
3919 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3920 stcb->asoc.out_tsnlog[i].tsn,
3921 stcb->asoc.out_tsnlog[i].strm,
3922 stcb->asoc.out_tsnlog[i].seq,
3923 stcb->asoc.out_tsnlog[i].flgs,
3924 stcb->asoc.out_tsnlog[i].sz);
3927 if (stcb->asoc.tsn_out_at) {
3928 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
3929 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3930 stcb->asoc.out_tsnlog[i].tsn,
3931 stcb->asoc.out_tsnlog[i].strm,
3932 stcb->asoc.out_tsnlog[i].seq,
3933 stcb->asoc.out_tsnlog[i].flgs,
3934 stcb->asoc.out_tsnlog[i].sz);
3943 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3944 struct mbuf *op_err,
3946 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3951 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3956 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3957 so = SCTP_INP_SO(inp);
3960 /* Got to have a TCB */
3961 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3962 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
3963 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
3964 SCTP_CALLED_DIRECTLY_NOCMPSET);
3969 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3971 /* notify the ulp */
3972 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
3973 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
3975 /* notify the peer */
3976 sctp_send_abort_tcb(stcb, op_err, so_locked);
3977 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3978 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3979 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3980 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3982 /* now free the asoc */
3983 #ifdef SCTP_ASOCLOG_OF_TSNS
3984 sctp_print_out_track_log(stcb);
3986 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
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);
3995 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
3996 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3998 SCTP_SOCKET_UNLOCK(so, 1);
4004 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4005 struct sockaddr *src, struct sockaddr *dst,
4006 struct sctphdr *sh, struct sctp_inpcb *inp,
4008 uint8_t use_mflowid, uint32_t mflowid,
4009 uint32_t vrf_id, uint16_t port)
4011 struct sctp_chunkhdr *ch, chunk_buf;
4012 unsigned int chk_length;
4013 int contains_init_chunk;
4015 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4016 /* Generate a TO address for future reference */
4017 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4018 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4019 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4020 SCTP_CALLED_DIRECTLY_NOCMPSET);
4023 contains_init_chunk = 0;
4024 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4025 sizeof(*ch), (uint8_t *) & chunk_buf);
4026 while (ch != NULL) {
4027 chk_length = ntohs(ch->chunk_length);
4028 if (chk_length < sizeof(*ch)) {
4029 /* break to abort land */
4032 switch (ch->chunk_type) {
4034 contains_init_chunk = 1;
4036 case SCTP_PACKET_DROPPED:
4037 /* we don't respond to pkt-dropped */
4039 case SCTP_ABORT_ASSOCIATION:
4040 /* we don't respond with an ABORT to an ABORT */
4042 case SCTP_SHUTDOWN_COMPLETE:
4044 * we ignore it since we are not waiting for it and
4048 case SCTP_SHUTDOWN_ACK:
4049 sctp_send_shutdown_complete2(src, dst, sh,
4050 use_mflowid, mflowid,
4056 offset += SCTP_SIZE32(chk_length);
4057 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4058 sizeof(*ch), (uint8_t *) & chunk_buf);
4060 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4061 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4062 (contains_init_chunk == 0))) {
4063 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4064 use_mflowid, mflowid,
4070 * check the inbound datagram to make sure there is not an abort inside it,
4071 * if there is return 1, else return 0.
4074 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
4076 struct sctp_chunkhdr *ch;
4077 struct sctp_init_chunk *init_chk, chunk_buf;
4079 unsigned int chk_length;
4081 offset = iphlen + sizeof(struct sctphdr);
4082 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4083 (uint8_t *) & chunk_buf);
4084 while (ch != NULL) {
4085 chk_length = ntohs(ch->chunk_length);
4086 if (chk_length < sizeof(*ch)) {
4087 /* packet is probably corrupt */
4090 /* we seem to be ok, is it an abort? */
4091 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4092 /* yep, tell them */
4095 if (ch->chunk_type == SCTP_INITIATION) {
4096 /* need to update the Vtag */
4097 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4098 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
4099 if (init_chk != NULL) {
4100 *vtagfill = ntohl(init_chk->init.initiate_tag);
4103 /* Nope, move to the next chunk */
4104 offset += SCTP_SIZE32(chk_length);
4105 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4106 sizeof(*ch), (uint8_t *) & chunk_buf);
4112 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4113 * set (i.e. it's 0) so, create this function to compare link local scopes
4117 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4119 struct sockaddr_in6 a, b;
4125 if (a.sin6_scope_id == 0)
4126 if (sa6_recoverscope(&a)) {
4127 /* can't get scope, so can't match */
4130 if (b.sin6_scope_id == 0)
4131 if (sa6_recoverscope(&b)) {
4132 /* can't get scope, so can't match */
4135 if (a.sin6_scope_id != b.sin6_scope_id)
4142 * returns a sockaddr_in6 with embedded scope recovered and removed
4144 struct sockaddr_in6 *
4145 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4147 /* check and strip embedded scope junk */
4148 if (addr->sin6_family == AF_INET6) {
4149 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4150 if (addr->sin6_scope_id == 0) {
4152 if (!sa6_recoverscope(store)) {
4153 /* use the recovered scope */
4157 /* else, return the original "to" addr */
4158 in6_clearscope(&addr->sin6_addr);
4168 * are the two addresses the same? currently a "scopeless" check returns: 1
4172 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4176 if (sa1 == NULL || sa2 == NULL)
4179 /* must be the same family */
4180 if (sa1->sa_family != sa2->sa_family)
4183 switch (sa1->sa_family) {
4187 /* IPv6 addresses */
4188 struct sockaddr_in6 *sin6_1, *sin6_2;
4190 sin6_1 = (struct sockaddr_in6 *)sa1;
4191 sin6_2 = (struct sockaddr_in6 *)sa2;
4192 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4199 /* IPv4 addresses */
4200 struct sockaddr_in *sin_1, *sin_2;
4202 sin_1 = (struct sockaddr_in *)sa1;
4203 sin_2 = (struct sockaddr_in *)sa2;
4204 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4208 /* we don't do these... */
4214 sctp_print_address(struct sockaddr *sa)
4217 char ip6buf[INET6_ADDRSTRLEN];
4221 switch (sa->sa_family) {
4225 struct sockaddr_in6 *sin6;
4227 sin6 = (struct sockaddr_in6 *)sa;
4228 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4229 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4230 ntohs(sin6->sin6_port),
4231 sin6->sin6_scope_id);
4238 struct sockaddr_in *sin;
4241 sin = (struct sockaddr_in *)sa;
4242 p = (unsigned char *)&sin->sin_addr;
4243 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4244 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4255 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4256 struct sctp_inpcb *new_inp,
4257 struct sctp_tcb *stcb,
4261 * go through our old INP and pull off any control structures that
4262 * belong to stcb and move then to the new inp.
4264 struct socket *old_so, *new_so;
4265 struct sctp_queued_to_read *control, *nctl;
4266 struct sctp_readhead tmp_queue;
4270 old_so = old_inp->sctp_socket;
4271 new_so = new_inp->sctp_socket;
4272 TAILQ_INIT(&tmp_queue);
4273 error = sblock(&old_so->so_rcv, waitflags);
4276 * Gak, can't get sblock, we have a problem. data will be
4277 * left stranded.. and we don't dare look at it since the
4278 * other thread may be reading something. Oh well, its a
4279 * screwed up app that does a peeloff OR a accept while
4280 * reading from the main socket... actually its only the
4281 * peeloff() case, since I think read will fail on a
4282 * listening socket..
4286 /* lock the socket buffers */
4287 SCTP_INP_READ_LOCK(old_inp);
4288 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4289 /* Pull off all for out target stcb */
4290 if (control->stcb == stcb) {
4291 /* remove it we want it */
4292 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4293 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4296 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4297 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4299 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4300 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4301 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4303 m = SCTP_BUF_NEXT(m);
4307 SCTP_INP_READ_UNLOCK(old_inp);
4308 /* Remove the sb-lock on the old socket */
4310 sbunlock(&old_so->so_rcv);
4311 /* Now we move them over to the new socket buffer */
4312 SCTP_INP_READ_LOCK(new_inp);
4313 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4314 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4317 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4318 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4320 sctp_sballoc(stcb, &new_so->so_rcv, m);
4321 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4322 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4324 m = SCTP_BUF_NEXT(m);
4327 SCTP_INP_READ_UNLOCK(new_inp);
4331 sctp_add_to_readq(struct sctp_inpcb *inp,
4332 struct sctp_tcb *stcb,
4333 struct sctp_queued_to_read *control,
4336 int inp_read_lock_held,
4338 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4344 * Here we must place the control on the end of the socket read
4345 * queue AND increment sb_cc so that select will work properly on
4348 struct mbuf *m, *prev = NULL;
4353 panic("Gak, inp NULL on add_to_readq");
4357 if (inp_read_lock_held == 0)
4358 SCTP_INP_READ_LOCK(inp);
4359 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4360 sctp_free_remote_addr(control->whoFrom);
4361 if (control->data) {
4362 sctp_m_freem(control->data);
4363 control->data = NULL;
4365 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4366 if (inp_read_lock_held == 0)
4367 SCTP_INP_READ_UNLOCK(inp);
4370 if (!(control->spec_flags & M_NOTIFICATION)) {
4371 atomic_add_int(&inp->total_recvs, 1);
4372 if (!control->do_not_ref_stcb) {
4373 atomic_add_int(&stcb->total_recvs, 1);
4377 control->held_length = 0;
4378 control->length = 0;
4380 if (SCTP_BUF_LEN(m) == 0) {
4381 /* Skip mbufs with NO length */
4384 control->data = sctp_m_free(m);
4387 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4388 m = SCTP_BUF_NEXT(prev);
4391 control->tail_mbuf = prev;
4396 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4397 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4399 sctp_sballoc(stcb, sb, m);
4400 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4401 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4403 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4404 m = SCTP_BUF_NEXT(m);
4407 control->tail_mbuf = prev;
4409 /* Everything got collapsed out?? */
4410 sctp_free_remote_addr(control->whoFrom);
4411 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4412 if (inp_read_lock_held == 0)
4413 SCTP_INP_READ_UNLOCK(inp);
4417 control->end_added = 1;
4419 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4420 if (inp_read_lock_held == 0)
4421 SCTP_INP_READ_UNLOCK(inp);
4422 if (inp && inp->sctp_socket) {
4423 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4424 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4426 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4429 so = SCTP_INP_SO(inp);
4432 atomic_add_int(&stcb->asoc.refcnt, 1);
4433 SCTP_TCB_UNLOCK(stcb);
4435 SCTP_SOCKET_LOCK(so, 1);
4437 SCTP_TCB_LOCK(stcb);
4438 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4440 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4441 SCTP_SOCKET_UNLOCK(so, 1);
4446 sctp_sorwakeup(inp, inp->sctp_socket);
4447 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4449 SCTP_SOCKET_UNLOCK(so, 1);
4458 sctp_append_to_readq(struct sctp_inpcb *inp,
4459 struct sctp_tcb *stcb,
4460 struct sctp_queued_to_read *control,
4467 * A partial delivery API event is underway. OR we are appending on
4468 * the reassembly queue.
4470 * If PDAPI this means we need to add m to the end of the data.
4471 * Increase the length in the control AND increment the sb_cc.
4472 * Otherwise sb is NULL and all we need to do is put it at the end
4473 * of the mbuf chain.
4476 struct mbuf *mm, *tail = NULL, *prev = NULL;
4479 SCTP_INP_READ_LOCK(inp);
4481 if (control == NULL) {
4484 SCTP_INP_READ_UNLOCK(inp);
4488 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) {
4489 SCTP_INP_READ_UNLOCK(inp);
4492 if (control->end_added) {
4493 /* huh this one is complete? */
4501 if (SCTP_BUF_LEN(mm) == 0) {
4502 /* Skip mbufs with NO lenght */
4505 m = sctp_m_free(mm);
4508 SCTP_BUF_NEXT(prev) = sctp_m_free(mm);
4509 mm = SCTP_BUF_NEXT(prev);
4514 len += SCTP_BUF_LEN(mm);
4516 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4517 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm));
4519 sctp_sballoc(stcb, sb, mm);
4520 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4521 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4524 mm = SCTP_BUF_NEXT(mm);
4529 /* Really there should always be a prev */
4531 /* Huh nothing left? */
4533 panic("Nothing left to add?");
4540 if (control->tail_mbuf) {
4542 SCTP_BUF_NEXT(control->tail_mbuf) = m;
4543 control->tail_mbuf = tail;
4547 if (control->data != NULL) {
4548 panic("This should NOT happen");
4552 control->tail_mbuf = tail;
4554 atomic_add_int(&control->length, len);
4556 /* message is complete */
4557 if (stcb && (control == stcb->asoc.control_pdapi)) {
4558 stcb->asoc.control_pdapi = NULL;
4560 control->held_length = 0;
4561 control->end_added = 1;
4564 control->do_not_ref_stcb = 1;
4567 * When we are appending in partial delivery, the cum-ack is used
4568 * for the actual pd-api highest tsn on this mbuf. The true cum-ack
4569 * is populated in the outbound sinfo structure from the true cumack
4570 * if the association exists...
4572 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack;
4574 SCTP_INP_READ_UNLOCK(inp);
4576 if (inp && inp->sctp_socket) {
4577 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4578 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4580 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4583 so = SCTP_INP_SO(inp);
4585 atomic_add_int(&stcb->asoc.refcnt, 1);
4586 SCTP_TCB_UNLOCK(stcb);
4588 SCTP_SOCKET_LOCK(so, 1);
4590 SCTP_TCB_LOCK(stcb);
4591 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4593 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4594 SCTP_SOCKET_UNLOCK(so, 1);
4598 sctp_sorwakeup(inp, inp->sctp_socket);
4599 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4600 SCTP_SOCKET_UNLOCK(so, 1);
4609 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4610 *************ALTERNATE ROUTING CODE
4613 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4614 *************ALTERNATE ROUTING CODE
4618 sctp_generate_cause(uint16_t code, char *info)
4621 struct sctp_gen_error_cause *cause;
4622 size_t info_len, len;
4624 if ((code == 0) || (info == NULL)) {
4627 info_len = strlen(info);
4628 len = sizeof(struct sctp_paramhdr) + info_len;
4629 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4631 SCTP_BUF_LEN(m) = len;
4632 cause = mtod(m, struct sctp_gen_error_cause *);
4633 cause->code = htons(code);
4634 cause->length = htons((uint16_t) len);
4635 memcpy(cause->info, info, info_len);
4641 sctp_generate_no_user_data_cause(uint32_t tsn)
4644 struct sctp_error_no_user_data *no_user_data_cause;
4647 len = sizeof(struct sctp_error_no_user_data);
4648 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4650 SCTP_BUF_LEN(m) = len;
4651 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4652 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4653 no_user_data_cause->cause.length = htons((uint16_t) len);
4654 no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */
4659 #ifdef SCTP_MBCNT_LOGGING
4661 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4662 struct sctp_tmit_chunk *tp1, int chk_cnt)
4664 if (tp1->data == NULL) {
4667 asoc->chunks_on_out_queue -= chk_cnt;
4668 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4669 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4670 asoc->total_output_queue_size,
4675 if (asoc->total_output_queue_size >= tp1->book_size) {
4676 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4678 asoc->total_output_queue_size = 0;
4681 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4682 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4683 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4684 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4686 stcb->sctp_socket->so_snd.sb_cc = 0;
4695 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4696 uint8_t sent, int so_locked
4697 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4702 struct sctp_stream_out *strq;
4703 struct sctp_tmit_chunk *chk = NULL, *tp2;
4704 struct sctp_stream_queue_pending *sp;
4705 uint16_t stream = 0, seq = 0;
4706 uint8_t foundeom = 0;
4709 int do_wakeup_routine = 0;
4711 stream = tp1->rec.data.stream_number;
4712 seq = tp1->rec.data.stream_seq;
4714 ret_sz += tp1->book_size;
4715 if (tp1->data != NULL) {
4716 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4717 sctp_flight_size_decrease(tp1);
4718 sctp_total_flight_decrease(stcb, tp1);
4720 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4721 stcb->asoc.peers_rwnd += tp1->send_size;
4722 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4724 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4726 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4729 sctp_m_freem(tp1->data);
4732 do_wakeup_routine = 1;
4733 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4734 stcb->asoc.sent_queue_cnt_removeable--;
4737 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4738 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4739 SCTP_DATA_NOT_FRAG) {
4740 /* not frag'ed we ae done */
4743 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4744 /* end of frag, we are done */
4749 * Its a begin or middle piece, we must mark all of
4753 tp1 = TAILQ_NEXT(tp1, sctp_next);
4755 } while (tp1 && notdone);
4756 if (foundeom == 0) {
4758 * The multi-part message was scattered across the send and
4761 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4762 if ((tp1->rec.data.stream_number != stream) ||
4763 (tp1->rec.data.stream_seq != seq)) {
4767 * save to chk in case we have some on stream out
4768 * queue. If so and we have an un-transmitted one we
4769 * don't have to fudge the TSN.
4772 ret_sz += tp1->book_size;
4773 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4775 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4777 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4780 sctp_m_freem(tp1->data);
4783 /* No flight involved here book the size to 0 */
4785 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4788 do_wakeup_routine = 1;
4789 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4790 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4792 * on to the sent queue so we can wait for it to be
4795 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4797 stcb->asoc.send_queue_cnt--;
4798 stcb->asoc.sent_queue_cnt++;
4801 if (foundeom == 0) {
4803 * Still no eom found. That means there is stuff left on the
4804 * stream out queue.. yuck.
4806 SCTP_TCB_SEND_LOCK(stcb);
4807 strq = &stcb->asoc.strmout[stream];
4808 sp = TAILQ_FIRST(&strq->outqueue);
4810 sp->discard_rest = 1;
4812 * We may need to put a chunk on the queue that
4813 * holds the TSN that would have been sent with the
4817 /* Yep, we have to */
4818 sctp_alloc_a_chunk(stcb, chk);
4821 * we are hosed. All we can do is
4822 * nothing.. which will cause an
4823 * abort if the peer is paying
4828 memset(chk, 0, sizeof(*chk));
4829 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG;
4830 chk->sent = SCTP_FORWARD_TSN_SKIP;
4831 chk->asoc = &stcb->asoc;
4832 chk->rec.data.stream_seq = strq->next_sequence_send;
4833 chk->rec.data.stream_number = sp->stream;
4834 chk->rec.data.payloadtype = sp->ppid;
4835 chk->rec.data.context = sp->context;
4836 chk->flags = sp->act_flags;
4838 chk->whoTo = sp->net;
4840 chk->whoTo = stcb->asoc.primary_destination;
4841 atomic_add_int(&chk->whoTo->ref_count, 1);
4842 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4843 stcb->asoc.pr_sctp_cnt++;
4844 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4845 stcb->asoc.sent_queue_cnt++;
4846 stcb->asoc.pr_sctp_cnt++;
4848 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4850 strq->next_sequence_send++;
4854 * Pull any data to free up the SB and allow
4855 * sender to "add more" while we will throw
4858 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4859 ret_sz += sp->length;
4860 do_wakeup_routine = 1;
4862 sctp_m_freem(sp->data);
4864 sp->tail_mbuf = NULL;
4868 SCTP_TCB_SEND_UNLOCK(stcb);
4870 if (do_wakeup_routine) {
4871 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4874 so = SCTP_INP_SO(stcb->sctp_ep);
4876 atomic_add_int(&stcb->asoc.refcnt, 1);
4877 SCTP_TCB_UNLOCK(stcb);
4878 SCTP_SOCKET_LOCK(so, 1);
4879 SCTP_TCB_LOCK(stcb);
4880 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4881 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4882 /* assoc was freed while we were unlocked */
4883 SCTP_SOCKET_UNLOCK(so, 1);
4888 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4889 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4891 SCTP_SOCKET_UNLOCK(so, 1);
4899 * checks to see if the given address, sa, is one that is currently known by
4900 * the kernel note: can't distinguish the same address on multiple interfaces
4901 * and doesn't handle multiple addresses with different zone/scope id's note:
4902 * ifa_ifwithaddr() compares the entire sockaddr struct
4905 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4908 struct sctp_laddr *laddr;
4910 if (holds_lock == 0) {
4911 SCTP_INP_RLOCK(inp);
4913 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4914 if (laddr->ifa == NULL)
4916 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4919 if (addr->sa_family == AF_INET) {
4920 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4921 laddr->ifa->address.sin.sin_addr.s_addr) {
4923 if (holds_lock == 0) {
4924 SCTP_INP_RUNLOCK(inp);
4926 return (laddr->ifa);
4932 if (addr->sa_family == AF_INET6) {
4933 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4934 &laddr->ifa->address.sin6)) {
4936 if (holds_lock == 0) {
4937 SCTP_INP_RUNLOCK(inp);
4939 return (laddr->ifa);
4945 if (holds_lock == 0) {
4946 SCTP_INP_RUNLOCK(inp);
4952 sctp_get_ifa_hash_val(struct sockaddr *addr)
4954 switch (addr->sa_family) {
4958 struct sockaddr_in *sin;
4960 sin = (struct sockaddr_in *)addr;
4961 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
4967 struct sockaddr_in6 *sin6;
4968 uint32_t hash_of_addr;
4970 sin6 = (struct sockaddr_in6 *)addr;
4971 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
4972 sin6->sin6_addr.s6_addr32[1] +
4973 sin6->sin6_addr.s6_addr32[2] +
4974 sin6->sin6_addr.s6_addr32[3]);
4975 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
4976 return (hash_of_addr);
4986 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
4988 struct sctp_ifa *sctp_ifap;
4989 struct sctp_vrf *vrf;
4990 struct sctp_ifalist *hash_head;
4991 uint32_t hash_of_addr;
4993 if (holds_lock == 0)
4994 SCTP_IPI_ADDR_RLOCK();
4996 vrf = sctp_find_vrf(vrf_id);
4999 if (holds_lock == 0)
5000 SCTP_IPI_ADDR_RUNLOCK();
5003 hash_of_addr = sctp_get_ifa_hash_val(addr);
5005 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5006 if (hash_head == NULL) {
5007 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5008 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
5009 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
5010 sctp_print_address(addr);
5011 SCTP_PRINTF("No such bucket for address\n");
5012 if (holds_lock == 0)
5013 SCTP_IPI_ADDR_RUNLOCK();
5017 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5018 if (sctp_ifap == NULL) {
5020 panic("Huh LIST_FOREACH corrupt");
5023 SCTP_PRINTF("LIST corrupt of sctp_ifap's?\n");
5027 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5030 if (addr->sa_family == AF_INET) {
5031 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5032 sctp_ifap->address.sin.sin_addr.s_addr) {
5034 if (holds_lock == 0)
5035 SCTP_IPI_ADDR_RUNLOCK();
5042 if (addr->sa_family == AF_INET6) {
5043 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5044 &sctp_ifap->address.sin6)) {
5046 if (holds_lock == 0)
5047 SCTP_IPI_ADDR_RUNLOCK();
5054 if (holds_lock == 0)
5055 SCTP_IPI_ADDR_RUNLOCK();
5060 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
5063 /* User pulled some data, do we need a rwnd update? */
5066 struct socket *so = NULL;
5071 atomic_add_int(&stcb->asoc.refcnt, 1);
5073 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5074 SCTP_STATE_SHUTDOWN_RECEIVED |
5075 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5076 /* Pre-check If we are freeing no update */
5079 SCTP_INP_INCR_REF(stcb->sctp_ep);
5080 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5081 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5084 so = stcb->sctp_socket;
5088 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5089 /* Have you have freed enough to look */
5091 /* Yep, its worth a look and the lock overhead */
5093 /* Figure out what the rwnd would be */
5094 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5095 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5096 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5100 if (dif >= rwnd_req) {
5102 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5105 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5107 * One last check before we allow the guy possibly
5108 * to get in. There is a race, where the guy has not
5109 * reached the gate. In that case
5113 SCTP_TCB_LOCK(stcb);
5114 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5115 /* No reports here */
5116 SCTP_TCB_UNLOCK(stcb);
5119 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5120 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5122 sctp_chunk_output(stcb->sctp_ep, stcb,
5123 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5124 /* make sure no timer is running */
5125 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5126 SCTP_TCB_UNLOCK(stcb);
5128 /* Update how much we have pending */
5129 stcb->freed_by_sorcv_sincelast = dif;
5132 if (so && r_unlocked && hold_rlock) {
5133 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5135 SCTP_INP_DECR_REF(stcb->sctp_ep);
5137 atomic_add_int(&stcb->asoc.refcnt, -1);
5142 sctp_sorecvmsg(struct socket *so,
5145 struct sockaddr *from,
5148 struct sctp_sndrcvinfo *sinfo,
5152 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5153 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5154 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5155 * On the way out we may send out any combination of:
5156 * MSG_NOTIFICATION MSG_EOR
5159 struct sctp_inpcb *inp = NULL;
5161 int cp_len = 0, error = 0;
5162 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5163 struct mbuf *m = NULL;
5164 struct sctp_tcb *stcb = NULL;
5165 int wakeup_read_socket = 0;
5166 int freecnt_applied = 0;
5167 int out_flags = 0, in_flags = 0;
5168 int block_allowed = 1;
5169 uint32_t freed_so_far = 0;
5170 uint32_t copied_so_far = 0;
5171 int in_eeor_mode = 0;
5172 int no_rcv_needed = 0;
5173 uint32_t rwnd_req = 0;
5174 int hold_sblock = 0;
5177 uint32_t held_length = 0;
5178 int sockbuf_lock = 0;
5181 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5185 in_flags = *msg_flags;
5186 if (in_flags & MSG_PEEK)
5187 SCTP_STAT_INCR(sctps_read_peeks);
5191 slen = uio->uio_resid;
5193 /* Pull in and set up our int flags */
5194 if (in_flags & MSG_OOB) {
5195 /* Out of band's NOT supported */
5196 return (EOPNOTSUPP);
5198 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5199 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5202 if ((in_flags & (MSG_DONTWAIT
5205 SCTP_SO_IS_NBIO(so)) {
5208 /* setup the endpoint */
5209 inp = (struct sctp_inpcb *)so->so_pcb;
5211 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5214 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5215 /* Must be at least a MTU's worth */
5216 if (rwnd_req < SCTP_MIN_RWND)
5217 rwnd_req = SCTP_MIN_RWND;
5218 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5219 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5220 sctp_misc_ints(SCTP_SORECV_ENTER,
5221 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid);
5223 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5224 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5225 rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid);
5227 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5229 goto release_unlocked;
5236 if (hold_sblock == 0) {
5237 SOCKBUF_LOCK(&so->so_rcv);
5240 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5241 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5244 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5246 error = so->so_error;
5247 if ((in_flags & MSG_PEEK) == 0)
5251 if (so->so_rcv.sb_cc == 0) {
5258 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
5259 /* we need to wait for data */
5260 if ((so->so_rcv.sb_cc == 0) &&
5261 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5262 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5263 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5265 * For active open side clear flags for
5266 * re-use passive open is blocked by
5269 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5271 * You were aborted, passive side
5274 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5277 so->so_state &= ~(SS_ISCONNECTING |
5278 SS_ISDISCONNECTING |
5282 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5283 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5290 error = sbwait(&so->so_rcv);
5295 goto restart_nosblocks;
5296 } else if (so->so_rcv.sb_cc == 0) {
5298 error = so->so_error;
5299 if ((in_flags & MSG_PEEK) == 0)
5302 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5303 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
5304 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5306 * For active open side clear flags
5307 * for re-use passive open is
5308 * blocked by connect.
5310 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5312 * You were aborted, passive
5313 * side always hits here
5315 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5318 so->so_state &= ~(SS_ISCONNECTING |
5319 SS_ISDISCONNECTING |
5323 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5324 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5331 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5332 error = EWOULDBLOCK;
5336 if (hold_sblock == 1) {
5337 SOCKBUF_UNLOCK(&so->so_rcv);
5340 /* we possibly have data we can read */
5341 /* sa_ignore FREED_MEMORY */
5342 control = TAILQ_FIRST(&inp->read_queue);
5343 if (control == NULL) {
5345 * This could be happening since the appender did the
5346 * increment but as not yet did the tailq insert onto the
5349 if (hold_rlock == 0) {
5350 SCTP_INP_READ_LOCK(inp);
5352 control = TAILQ_FIRST(&inp->read_queue);
5353 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5355 panic("Huh, its non zero and nothing on control?");
5357 so->so_rcv.sb_cc = 0;
5359 SCTP_INP_READ_UNLOCK(inp);
5363 if ((control->length == 0) &&
5364 (control->do_not_ref_stcb)) {
5366 * Clean up code for freeing assoc that left behind a
5367 * pdapi.. maybe a peer in EEOR that just closed after
5368 * sending and never indicated a EOR.
5370 if (hold_rlock == 0) {
5372 SCTP_INP_READ_LOCK(inp);
5374 control->held_length = 0;
5375 if (control->data) {
5376 /* Hmm there is data here .. fix */
5380 m_tmp = control->data;
5382 cnt += SCTP_BUF_LEN(m_tmp);
5383 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5384 control->tail_mbuf = m_tmp;
5385 control->end_added = 1;
5387 m_tmp = SCTP_BUF_NEXT(m_tmp);
5389 control->length = cnt;
5392 TAILQ_REMOVE(&inp->read_queue, control, next);
5393 /* Add back any hiddend data */
5394 sctp_free_remote_addr(control->whoFrom);
5395 sctp_free_a_readq(stcb, control);
5399 SCTP_INP_READ_UNLOCK(inp);
5403 if ((control->length == 0) &&
5404 (control->end_added == 1)) {
5406 * Do we also need to check for (control->pdapi_aborted ==
5409 if (hold_rlock == 0) {
5411 SCTP_INP_READ_LOCK(inp);
5413 TAILQ_REMOVE(&inp->read_queue, control, next);
5414 if (control->data) {
5416 panic("control->data not null but control->length == 0");
5418 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5419 sctp_m_freem(control->data);
5420 control->data = NULL;
5423 if (control->aux_data) {
5424 sctp_m_free(control->aux_data);
5425 control->aux_data = NULL;
5427 sctp_free_remote_addr(control->whoFrom);
5428 sctp_free_a_readq(stcb, control);
5431 SCTP_INP_READ_UNLOCK(inp);
5435 if (control->length == 0) {
5436 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5438 /* find a more suitable one then this */
5439 ctl = TAILQ_NEXT(control, next);
5441 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5443 (ctl->spec_flags & M_NOTIFICATION) ||
5444 ((ctl->do_not_ref_stcb == 0) &&
5445 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5448 * If we have a different TCB next, and there is data
5449 * present. If we have already taken some (pdapi), OR we can
5450 * ref the tcb and no delivery as started on this stream, we
5451 * take it. Note we allow a notification on a different
5452 * assoc to be delivered..
5456 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5458 ((ctl->some_taken) ||
5459 ((ctl->do_not_ref_stcb == 0) &&
5460 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5461 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5463 * If we have the same tcb, and there is data present, and we
5464 * have the strm interleave feature present. Then if we have
5465 * taken some (pdapi) or we can refer to tht tcb AND we have
5466 * not started a delivery for this stream, we can take it.
5467 * Note we do NOT allow a notificaiton on the same assoc to
5473 ctl = TAILQ_NEXT(ctl, next);
5477 * if we reach here, not suitable replacement is available
5478 * <or> fragment interleave is NOT on. So stuff the sb_cc
5479 * into the our held count, and its time to sleep again.
5481 held_length = so->so_rcv.sb_cc;
5482 control->held_length = so->so_rcv.sb_cc;
5485 /* Clear the held length since there is something to read */
5486 control->held_length = 0;
5488 SCTP_INP_READ_UNLOCK(inp);
5493 * If we reach here, control has a some data for us to read off.
5494 * Note that stcb COULD be NULL.
5496 control->some_taken++;
5498 SOCKBUF_UNLOCK(&so->so_rcv);
5501 stcb = control->stcb;
5503 if ((control->do_not_ref_stcb == 0) &&
5504 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5505 if (freecnt_applied == 0)
5507 } else if (control->do_not_ref_stcb == 0) {
5508 /* you can't free it on me please */
5510 * The lock on the socket buffer protects us so the
5511 * free code will stop. But since we used the
5512 * socketbuf lock and the sender uses the tcb_lock
5513 * to increment, we need to use the atomic add to
5516 if (freecnt_applied) {
5518 panic("refcnt already incremented");
5520 SCTP_PRINTF("refcnt already incremented?\n");
5523 atomic_add_int(&stcb->asoc.refcnt, 1);
5524 freecnt_applied = 1;
5527 * Setup to remember how much we have not yet told
5528 * the peer our rwnd has opened up. Note we grab the
5529 * value from the tcb from last time. Note too that
5530 * sack sending clears this when a sack is sent,
5531 * which is fine. Once we hit the rwnd_req, we then
5532 * will go to the sctp_user_rcvd() that will not
5533 * lock until it KNOWs it MUST send a WUP-SACK.
5535 freed_so_far = stcb->freed_by_sorcv_sincelast;
5536 stcb->freed_by_sorcv_sincelast = 0;
5540 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5541 control->do_not_ref_stcb == 0) {
5542 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5544 /* First lets get off the sinfo and sockaddr info */
5545 if ((sinfo) && filling_sinfo) {
5546 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo));
5547 nxt = TAILQ_NEXT(control, next);
5548 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5549 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5550 struct sctp_extrcvinfo *s_extra;
5552 s_extra = (struct sctp_extrcvinfo *)sinfo;
5555 s_extra->sreinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5556 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5557 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5559 if (nxt->spec_flags & M_NOTIFICATION) {
5560 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5562 s_extra->sreinfo_next_aid = nxt->sinfo_assoc_id;
5563 s_extra->sreinfo_next_length = nxt->length;
5564 s_extra->sreinfo_next_ppid = nxt->sinfo_ppid;
5565 s_extra->sreinfo_next_stream = nxt->sinfo_stream;
5566 if (nxt->tail_mbuf != NULL) {
5567 if (nxt->end_added) {
5568 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5573 * we explicitly 0 this, since the memcpy
5574 * got some other things beyond the older
5575 * sinfo_ that is on the control's structure
5579 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
5580 s_extra->sreinfo_next_aid = 0;
5581 s_extra->sreinfo_next_length = 0;
5582 s_extra->sreinfo_next_ppid = 0;
5583 s_extra->sreinfo_next_stream = 0;
5587 * update off the real current cum-ack, if we have an stcb.
5589 if ((control->do_not_ref_stcb == 0) && stcb)
5590 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5592 * mask off the high bits, we keep the actual chunk bits in
5595 sinfo->sinfo_flags &= 0x00ff;
5596 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5597 sinfo->sinfo_flags |= SCTP_UNORDERED;
5600 #ifdef SCTP_ASOCLOG_OF_TSNS
5602 int index, newindex;
5603 struct sctp_pcbtsn_rlog *entry;
5606 index = inp->readlog_index;
5607 newindex = index + 1;
5608 if (newindex >= SCTP_READ_LOG_SIZE) {
5611 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5612 entry = &inp->readlog[index];
5613 entry->vtag = control->sinfo_assoc_id;
5614 entry->strm = control->sinfo_stream;
5615 entry->seq = control->sinfo_ssn;
5616 entry->sz = control->length;
5617 entry->flgs = control->sinfo_flags;
5620 if (fromlen && from) {
5621 cp_len = min((size_t)fromlen, (size_t)control->whoFrom->ro._l_addr.sa.sa_len);
5622 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5625 ((struct sockaddr_in6 *)from)->sin6_port = control->port_from;
5630 ((struct sockaddr_in *)from)->sin_port = control->port_from;
5636 memcpy(from, &control->whoFrom->ro._l_addr, cp_len);
5638 #if defined(INET) && defined(INET6)
5639 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) &&
5640 (from->sa_family == AF_INET) &&
5641 ((size_t)fromlen >= sizeof(struct sockaddr_in6))) {
5642 struct sockaddr_in *sin;
5643 struct sockaddr_in6 sin6;
5645 sin = (struct sockaddr_in *)from;
5646 bzero(&sin6, sizeof(sin6));
5647 sin6.sin6_family = AF_INET6;
5648 sin6.sin6_len = sizeof(struct sockaddr_in6);
5649 sin6.sin6_addr.s6_addr32[2] = htonl(0xffff);
5650 bcopy(&sin->sin_addr,
5651 &sin6.sin6_addr.s6_addr32[3],
5652 sizeof(sin6.sin6_addr.s6_addr32[3]));
5653 sin6.sin6_port = sin->sin_port;
5654 memcpy(from, &sin6, sizeof(struct sockaddr_in6));
5659 struct sockaddr_in6 lsa6, *from6;
5661 from6 = (struct sockaddr_in6 *)from;
5662 sctp_recover_scope_mac(from6, (&lsa6));
5666 /* now copy out what data we can */
5668 /* copy out each mbuf in the chain up to length */
5672 /* Move out all we can */
5673 cp_len = (int)uio->uio_resid;
5674 my_len = (int)SCTP_BUF_LEN(m);
5675 if (cp_len > my_len) {
5676 /* not enough in this buf */
5680 SCTP_INP_READ_UNLOCK(inp);
5684 error = uiomove(mtod(m, char *), cp_len, uio);
5686 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5689 if ((control->do_not_ref_stcb == 0) && stcb &&
5690 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5694 /* error we are out of here */
5697 if ((SCTP_BUF_NEXT(m) == NULL) &&
5698 (cp_len >= SCTP_BUF_LEN(m)) &&
5699 ((control->end_added == 0) ||
5700 (control->end_added &&
5701 (TAILQ_NEXT(control, next) == NULL)))
5703 SCTP_INP_READ_LOCK(inp);
5706 if (cp_len == SCTP_BUF_LEN(m)) {
5707 if ((SCTP_BUF_NEXT(m) == NULL) &&
5708 (control->end_added)) {
5709 out_flags |= MSG_EOR;
5710 if ((control->do_not_ref_stcb == 0) &&
5711 (control->stcb != NULL) &&
5712 ((control->spec_flags & M_NOTIFICATION) == 0))
5713 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5715 if (control->spec_flags & M_NOTIFICATION) {
5716 out_flags |= MSG_NOTIFICATION;
5718 /* we ate up the mbuf */
5719 if (in_flags & MSG_PEEK) {
5721 m = SCTP_BUF_NEXT(m);
5722 copied_so_far += cp_len;
5724 /* dispose of the mbuf */
5725 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5726 sctp_sblog(&so->so_rcv,
5727 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5729 sctp_sbfree(control, stcb, &so->so_rcv, m);
5730 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5731 sctp_sblog(&so->so_rcv,
5732 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5734 copied_so_far += cp_len;
5735 freed_so_far += cp_len;
5736 freed_so_far += MSIZE;
5737 atomic_subtract_int(&control->length, cp_len);
5738 control->data = sctp_m_free(m);
5741 * been through it all, must hold sb
5742 * lock ok to null tail
5744 if (control->data == NULL) {
5746 if ((control->end_added == 0) ||
5747 (TAILQ_NEXT(control, next) == NULL)) {
5755 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5756 panic("Hmm we don't own the lock?");
5760 control->tail_mbuf = NULL;
5762 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5763 panic("end_added, nothing left and no MSG_EOR");
5769 /* Do we need to trim the mbuf? */
5770 if (control->spec_flags & M_NOTIFICATION) {
5771 out_flags |= MSG_NOTIFICATION;
5773 if ((in_flags & MSG_PEEK) == 0) {
5774 SCTP_BUF_RESV_UF(m, cp_len);
5775 SCTP_BUF_LEN(m) -= cp_len;
5776 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5777 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5779 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5780 if ((control->do_not_ref_stcb == 0) &&
5782 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5784 copied_so_far += cp_len;
5785 freed_so_far += cp_len;
5786 freed_so_far += MSIZE;
5787 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5788 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5789 SCTP_LOG_SBRESULT, 0);
5791 atomic_subtract_int(&control->length, cp_len);
5793 copied_so_far += cp_len;
5796 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5799 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5800 (control->do_not_ref_stcb == 0) &&
5801 (freed_so_far >= rwnd_req)) {
5802 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5804 } /* end while(m) */
5806 * At this point we have looked at it all and we either have
5807 * a MSG_EOR/or read all the user wants... <OR>
5808 * control->length == 0.
5810 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5811 /* we are done with this control */
5812 if (control->length == 0) {
5813 if (control->data) {
5815 panic("control->data not null at read eor?");
5817 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5818 sctp_m_freem(control->data);
5819 control->data = NULL;
5823 if (TAILQ_NEXT(control, next) == NULL) {
5825 * If we don't have a next we need a
5826 * lock, if there is a next
5827 * interrupt is filling ahead of us
5828 * and we don't need a lock to
5829 * remove this guy (which is the
5830 * head of the queue).
5832 if (hold_rlock == 0) {
5833 SCTP_INP_READ_LOCK(inp);
5837 TAILQ_REMOVE(&inp->read_queue, control, next);
5838 /* Add back any hiddend data */
5839 if (control->held_length) {
5841 control->held_length = 0;
5842 wakeup_read_socket = 1;
5844 if (control->aux_data) {
5845 sctp_m_free(control->aux_data);
5846 control->aux_data = NULL;
5848 no_rcv_needed = control->do_not_ref_stcb;
5849 sctp_free_remote_addr(control->whoFrom);
5850 control->data = NULL;
5851 sctp_free_a_readq(stcb, control);
5853 if ((freed_so_far >= rwnd_req) &&
5854 (no_rcv_needed == 0))
5855 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5859 * The user did not read all of this
5860 * message, turn off the returned MSG_EOR
5861 * since we are leaving more behind on the
5865 if (control->end_added &&
5866 (control->data == NULL) &&
5867 (control->tail_mbuf == NULL)) {
5868 panic("Gak, control->length is corrupt?");
5871 no_rcv_needed = control->do_not_ref_stcb;
5872 out_flags &= ~MSG_EOR;
5875 if (out_flags & MSG_EOR) {
5878 if ((uio->uio_resid == 0) ||
5880 (copied_so_far >= (uint32_t) max(so->so_rcv.sb_lowat, 1)))) {
5884 * If I hit here the receiver wants more and this message is
5885 * NOT done (pd-api). So two questions. Can we block? if not
5886 * we are done. Did the user NOT set MSG_WAITALL?
5888 if (block_allowed == 0) {
5892 * We need to wait for more data a few things: - We don't
5893 * sbunlock() so we don't get someone else reading. - We
5894 * must be sure to account for the case where what is added
5895 * is NOT to our control when we wakeup.
5899 * Do we need to tell the transport a rwnd update might be
5900 * needed before we go to sleep?
5902 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5903 ((freed_so_far >= rwnd_req) &&
5904 (control->do_not_ref_stcb == 0) &&
5905 (no_rcv_needed == 0))) {
5906 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5909 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5912 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5915 if (hold_rlock == 1) {
5916 SCTP_INP_READ_UNLOCK(inp);
5919 if (hold_sblock == 0) {
5920 SOCKBUF_LOCK(&so->so_rcv);
5923 if ((copied_so_far) && (control->length == 0) &&
5924 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5927 if (so->so_rcv.sb_cc <= control->held_length) {
5928 error = sbwait(&so->so_rcv);
5932 control->held_length = 0;
5935 SOCKBUF_UNLOCK(&so->so_rcv);
5938 if (control->length == 0) {
5939 /* still nothing here */
5940 if (control->end_added == 1) {
5941 /* he aborted, or is done i.e.did a shutdown */
5942 out_flags |= MSG_EOR;
5943 if (control->pdapi_aborted) {
5944 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5945 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5947 out_flags |= MSG_TRUNC;
5949 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5950 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5952 goto done_with_control;
5954 if (so->so_rcv.sb_cc > held_length) {
5955 control->held_length = so->so_rcv.sb_cc;
5958 goto wait_some_more;
5959 } else if (control->data == NULL) {
5961 * we must re-sync since data is probably being
5964 SCTP_INP_READ_LOCK(inp);
5965 if ((control->length > 0) && (control->data == NULL)) {
5967 * big trouble.. we have the lock and its
5971 panic("Impossible data==NULL length !=0");
5973 out_flags |= MSG_EOR;
5974 out_flags |= MSG_TRUNC;
5975 control->length = 0;
5976 SCTP_INP_READ_UNLOCK(inp);
5977 goto done_with_control;
5979 SCTP_INP_READ_UNLOCK(inp);
5980 /* We will fall around to get more data */
5985 * Give caller back the mbuf chain,
5986 * store in uio_resid the length
5988 wakeup_read_socket = 0;
5989 if ((control->end_added == 0) ||
5990 (TAILQ_NEXT(control, next) == NULL)) {
5991 /* Need to get rlock */
5992 if (hold_rlock == 0) {
5993 SCTP_INP_READ_LOCK(inp);
5997 if (control->end_added) {
5998 out_flags |= MSG_EOR;
5999 if ((control->do_not_ref_stcb == 0) &&
6000 (control->stcb != NULL) &&
6001 ((control->spec_flags & M_NOTIFICATION) == 0))
6002 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6004 if (control->spec_flags & M_NOTIFICATION) {
6005 out_flags |= MSG_NOTIFICATION;
6007 uio->uio_resid = control->length;
6008 *mp = control->data;
6011 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6012 sctp_sblog(&so->so_rcv,
6013 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6015 sctp_sbfree(control, stcb, &so->so_rcv, m);
6016 freed_so_far += SCTP_BUF_LEN(m);
6017 freed_so_far += MSIZE;
6018 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6019 sctp_sblog(&so->so_rcv,
6020 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6022 m = SCTP_BUF_NEXT(m);
6024 control->data = control->tail_mbuf = NULL;
6025 control->length = 0;
6026 if (out_flags & MSG_EOR) {
6027 /* Done with this control */
6028 goto done_with_control;
6032 if (hold_rlock == 1) {
6033 SCTP_INP_READ_UNLOCK(inp);
6036 if (hold_sblock == 1) {
6037 SOCKBUF_UNLOCK(&so->so_rcv);
6040 sbunlock(&so->so_rcv);
6045 SOCKBUF_UNLOCK(&so->so_rcv);
6048 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6049 if ((freed_so_far >= rwnd_req) &&
6050 (control && (control->do_not_ref_stcb == 0)) &&
6051 (no_rcv_needed == 0))
6052 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6056 *msg_flags = out_flags;
6058 if (((out_flags & MSG_EOR) == 0) &&
6059 ((in_flags & MSG_PEEK) == 0) &&
6061 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6062 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6063 struct sctp_extrcvinfo *s_extra;
6065 s_extra = (struct sctp_extrcvinfo *)sinfo;
6066 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
6068 if (hold_rlock == 1) {
6069 SCTP_INP_READ_UNLOCK(inp);
6072 SOCKBUF_UNLOCK(&so->so_rcv);
6075 sbunlock(&so->so_rcv);
6077 if (freecnt_applied) {
6079 * The lock on the socket buffer protects us so the free
6080 * code will stop. But since we used the socketbuf lock and
6081 * the sender uses the tcb_lock to increment, we need to use
6082 * the atomic add to the refcnt.
6086 panic("stcb for refcnt has gone NULL?");
6092 atomic_add_int(&stcb->asoc.refcnt, -1);
6093 /* Save the value back for next time */
6094 stcb->freed_by_sorcv_sincelast = freed_so_far;
6096 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6098 sctp_misc_ints(SCTP_SORECV_DONE,
6100 ((uio) ? (slen - uio->uio_resid) : slen),
6104 sctp_misc_ints(SCTP_SORECV_DONE,
6106 ((uio) ? (slen - uio->uio_resid) : slen),
6112 if (wakeup_read_socket) {
6113 sctp_sorwakeup(inp, so);
6119 #ifdef SCTP_MBUF_LOGGING
6121 sctp_m_free(struct mbuf *m)
6123 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6124 if (SCTP_BUF_IS_EXTENDED(m)) {
6125 sctp_log_mb(m, SCTP_MBUF_IFREE);
6132 sctp_m_freem(struct mbuf *mb)
6135 mb = sctp_m_free(mb);
6141 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6144 * Given a local address. For all associations that holds the
6145 * address, request a peer-set-primary.
6147 struct sctp_ifa *ifa;
6148 struct sctp_laddr *wi;
6150 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6152 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6153 return (EADDRNOTAVAIL);
6156 * Now that we have the ifa we must awaken the iterator with this
6159 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6161 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6164 /* Now incr the count and int wi structure */
6165 SCTP_INCR_LADDR_COUNT();
6166 bzero(wi, sizeof(*wi));
6167 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6169 wi->action = SCTP_SET_PRIM_ADDR;
6170 atomic_add_int(&ifa->refcount, 1);
6172 /* Now add it to the work queue */
6173 SCTP_WQ_ADDR_LOCK();
6175 * Should this really be a tailq? As it is we will process the
6178 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6179 SCTP_WQ_ADDR_UNLOCK();
6180 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6181 (struct sctp_inpcb *)NULL,
6182 (struct sctp_tcb *)NULL,
6183 (struct sctp_nets *)NULL);
6189 sctp_soreceive(struct socket *so,
6190 struct sockaddr **psa,
6193 struct mbuf **controlp,
6197 uint8_t sockbuf[256];
6198 struct sockaddr *from;
6199 struct sctp_extrcvinfo sinfo;
6200 int filling_sinfo = 1;
6201 struct sctp_inpcb *inp;
6203 inp = (struct sctp_inpcb *)so->so_pcb;
6204 /* pickup the assoc we are reading from */
6206 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6209 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6210 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6211 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6212 (controlp == NULL)) {
6213 /* user does not want the sndrcv ctl */
6217 from = (struct sockaddr *)sockbuf;
6218 fromlen = sizeof(sockbuf);
6225 if (filling_sinfo) {
6226 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6228 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6229 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6230 if (controlp != NULL) {
6231 /* copy back the sinfo in a CMSG format */
6233 *controlp = sctp_build_ctl_nchunk(inp,
6234 (struct sctp_sndrcvinfo *)&sinfo);
6239 /* copy back the address info */
6240 if (from && from->sa_len) {
6241 *psa = sodupsockaddr(from, M_NOWAIT);
6254 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6255 int totaddr, int *error)
6259 struct sctp_inpcb *inp;
6260 struct sockaddr *sa;
6264 struct sockaddr_in *sin;
6268 struct sockaddr_in6 *sin6;
6273 inp = stcb->sctp_ep;
6275 for (i = 0; i < totaddr; i++) {
6276 switch (sa->sa_family) {
6279 incr = sizeof(struct sockaddr_in);
6280 sin = (struct sockaddr_in *)sa;
6281 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6282 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6283 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6284 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6285 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6289 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6290 /* assoc gone no un-lock */
6291 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6292 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6301 incr = sizeof(struct sockaddr_in6);
6302 sin6 = (struct sockaddr_in6 *)sa;
6303 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6304 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6305 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6306 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6310 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6311 /* assoc gone no un-lock */
6312 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6313 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6323 sa = (struct sockaddr *)((caddr_t)sa + incr);
6330 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6331 int *totaddr, int *num_v4, int *num_v6, int *error,
6332 int limit, int *bad_addr)
6334 struct sockaddr *sa;
6335 struct sctp_tcb *stcb = NULL;
6341 *error = *num_v6 = *num_v4 = 0;
6342 /* account and validate addresses */
6343 for (i = 0; i < (size_t)*totaddr; i++) {
6344 switch (sa->sa_family) {
6348 incr = sizeof(struct sockaddr_in);
6349 if (sa->sa_len != incr) {
6350 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6360 struct sockaddr_in6 *sin6;
6362 sin6 = (struct sockaddr_in6 *)sa;
6363 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6364 /* Must be non-mapped for connectx */
6365 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6371 incr = sizeof(struct sockaddr_in6);
6372 if (sa->sa_len != incr) {
6373 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6386 if (i == (size_t)*totaddr) {
6389 SCTP_INP_INCR_REF(inp);
6390 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6392 /* Already have or am bring up an association */
6395 SCTP_INP_DECR_REF(inp);
6397 if ((at + incr) > (size_t)limit) {
6401 sa = (struct sockaddr *)((caddr_t)sa + incr);
6403 return ((struct sctp_tcb *)NULL);
6407 * sctp_bindx(ADD) for one address.
6408 * assumes all arguments are valid/checked by caller.
6411 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6412 struct sockaddr *sa, sctp_assoc_t assoc_id,
6413 uint32_t vrf_id, int *error, void *p)
6415 struct sockaddr *addr_touse;
6418 struct sockaddr_in sin;
6422 /* see if we're bound all already! */
6423 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6424 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6430 if (sa->sa_family == AF_INET6) {
6431 struct sockaddr_in6 *sin6;
6433 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6434 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6438 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6439 /* can only bind v6 on PF_INET6 sockets */
6440 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6444 sin6 = (struct sockaddr_in6 *)addr_touse;
6445 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6446 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6447 SCTP_IPV6_V6ONLY(inp)) {
6448 /* can't bind v4-mapped on PF_INET sockets */
6449 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6453 in6_sin6_2_sin(&sin, sin6);
6454 addr_touse = (struct sockaddr *)&sin;
6459 if (sa->sa_family == AF_INET) {
6460 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6461 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6465 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6466 SCTP_IPV6_V6ONLY(inp)) {
6467 /* can't bind v4 on PF_INET sockets */
6468 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6474 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6476 /* Can't get proc for Net/Open BSD */
6477 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6481 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6485 * No locks required here since bind and mgmt_ep_sa all do their own
6486 * locking. If we do something for the FIX: below we may need to
6487 * lock in that case.
6489 if (assoc_id == 0) {
6490 /* add the address */
6491 struct sctp_inpcb *lep;
6492 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6494 /* validate the incoming port */
6495 if ((lsin->sin_port != 0) &&
6496 (lsin->sin_port != inp->sctp_lport)) {
6497 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6501 /* user specified 0 port, set it to existing port */
6502 lsin->sin_port = inp->sctp_lport;
6505 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6508 * We must decrement the refcount since we have the
6509 * ep already and are binding. No remove going on
6512 SCTP_INP_DECR_REF(lep);
6515 /* already bound to it.. ok */
6517 } else if (lep == NULL) {
6518 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6519 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6520 SCTP_ADD_IP_ADDRESS,
6523 *error = EADDRINUSE;
6529 * FIX: decide whether we allow assoc based bindx
6535 * sctp_bindx(DELETE) for one address.
6536 * assumes all arguments are valid/checked by caller.
6539 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6540 struct sockaddr *sa, sctp_assoc_t assoc_id,
6541 uint32_t vrf_id, int *error)
6543 struct sockaddr *addr_touse;
6546 struct sockaddr_in sin;
6550 /* see if we're bound all already! */
6551 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6552 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6558 if (sa->sa_family == AF_INET6) {
6559 struct sockaddr_in6 *sin6;
6561 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6562 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6566 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6567 /* can only bind v6 on PF_INET6 sockets */
6568 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6572 sin6 = (struct sockaddr_in6 *)addr_touse;
6573 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6574 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6575 SCTP_IPV6_V6ONLY(inp)) {
6576 /* can't bind mapped-v4 on PF_INET sockets */
6577 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6581 in6_sin6_2_sin(&sin, sin6);
6582 addr_touse = (struct sockaddr *)&sin;
6587 if (sa->sa_family == AF_INET) {
6588 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6589 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6593 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6594 SCTP_IPV6_V6ONLY(inp)) {
6595 /* can't bind v4 on PF_INET sockets */
6596 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6603 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6604 * below is ever changed we may need to lock before calling
6605 * association level binding.
6607 if (assoc_id == 0) {
6608 /* delete the address */
6609 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6610 SCTP_DEL_IP_ADDRESS,
6614 * FIX: decide whether we allow assoc based bindx
6620 * returns the valid local address count for an assoc, taking into account
6624 sctp_local_addr_count(struct sctp_tcb *stcb)
6629 int ipv4_local_scope, ipv4_addr_legal;
6633 int local_scope, site_scope, ipv6_addr_legal;
6636 struct sctp_vrf *vrf;
6637 struct sctp_ifn *sctp_ifn;
6638 struct sctp_ifa *sctp_ifa;
6641 /* Turn on all the appropriate scopes */
6642 loopback_scope = stcb->asoc.scope.loopback_scope;
6644 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6645 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6648 local_scope = stcb->asoc.scope.local_scope;
6649 site_scope = stcb->asoc.scope.site_scope;
6650 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6652 SCTP_IPI_ADDR_RLOCK();
6653 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6655 /* no vrf, no addresses */
6656 SCTP_IPI_ADDR_RUNLOCK();
6659 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6661 * bound all case: go through all ifns on the vrf
6663 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6664 if ((loopback_scope == 0) &&
6665 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6668 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6669 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6671 switch (sctp_ifa->address.sa.sa_family) {
6674 if (ipv4_addr_legal) {
6675 struct sockaddr_in *sin;
6677 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
6678 if (sin->sin_addr.s_addr == 0) {
6685 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6686 &sin->sin_addr) != 0) {
6689 if ((ipv4_local_scope == 0) &&
6690 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6693 /* count this one */
6702 if (ipv6_addr_legal) {
6703 struct sockaddr_in6 *sin6;
6705 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
6706 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6709 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6710 &sin6->sin6_addr) != 0) {
6713 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6714 if (local_scope == 0)
6716 if (sin6->sin6_scope_id == 0) {
6717 if (sa6_recoverscope(sin6) != 0)
6735 if ((site_scope == 0) &&
6736 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6739 /* count this one */
6754 struct sctp_laddr *laddr;
6756 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6758 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6761 /* count this one */
6765 SCTP_IPI_ADDR_RUNLOCK();
6769 #if defined(SCTP_LOCAL_TRACE_BUF)
6772 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)
6774 uint32_t saveindex, newindex;
6777 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6778 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6781 newindex = saveindex + 1;
6783 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6784 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6787 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6788 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6789 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6790 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6791 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6792 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6793 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6794 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6799 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *ignored)
6804 struct ip6_hdr *ip6;
6807 struct mbuf *sp, *last;
6808 struct udphdr *uhdr;
6811 if ((m->m_flags & M_PKTHDR) == 0) {
6812 /* Can't handle one that is not a pkt hdr */
6815 /* Pull the src port */
6816 iph = mtod(m, struct ip *);
6817 uhdr = (struct udphdr *)((caddr_t)iph + off);
6818 port = uhdr->uh_sport;
6820 * Split out the mbuf chain. Leave the IP header in m, place the
6823 sp = m_split(m, off, M_NOWAIT);
6825 /* Gak, drop packet, we can't do a split */
6828 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6829 /* Gak, packet can't have an SCTP header in it - too small */
6833 /* Now pull up the UDP header and SCTP header together */
6834 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6836 /* Gak pullup failed */
6839 /* Trim out the UDP header */
6840 m_adj(sp, sizeof(struct udphdr));
6842 /* Now reconstruct the mbuf chain */
6843 for (last = m; last->m_next; last = last->m_next);
6845 m->m_pkthdr.len += sp->m_pkthdr.len;
6846 iph = mtod(m, struct ip *);
6847 switch (iph->ip_v) {
6850 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
6851 sctp_input_with_port(m, off, port);
6855 case IPV6_VERSION >> 4:
6856 ip6 = mtod(m, struct ip6_hdr *);
6857 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
6858 sctp6_input_with_port(&m, &off, port);
6871 sctp_over_udp_stop(void)
6874 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6878 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
6879 soclose(SCTP_BASE_INFO(udp4_tun_socket));
6880 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
6884 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
6885 soclose(SCTP_BASE_INFO(udp6_tun_socket));
6886 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
6892 sctp_over_udp_start(void)
6898 struct sockaddr_in sin;
6902 struct sockaddr_in6 sin6;
6906 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6909 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
6910 if (ntohs(port) == 0) {
6911 /* Must have a port set */
6915 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
6916 /* Already running -- must stop first */
6921 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
6922 /* Already running -- must stop first */
6927 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
6928 SOCK_DGRAM, IPPROTO_UDP,
6929 curthread->td_ucred, curthread))) {
6930 sctp_over_udp_stop();
6933 /* Call the special UDP hook. */
6934 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
6935 sctp_recv_udp_tunneled_packet))) {
6936 sctp_over_udp_stop();
6939 /* Ok, we have a socket, bind it to the port. */
6940 memset(&sin, 0, sizeof(struct sockaddr_in));
6941 sin.sin_len = sizeof(struct sockaddr_in);
6942 sin.sin_family = AF_INET;
6943 sin.sin_port = htons(port);
6944 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
6945 (struct sockaddr *)&sin, curthread))) {
6946 sctp_over_udp_stop();
6951 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
6952 SOCK_DGRAM, IPPROTO_UDP,
6953 curthread->td_ucred, curthread))) {
6954 sctp_over_udp_stop();
6957 /* Call the special UDP hook. */
6958 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
6959 sctp_recv_udp_tunneled_packet))) {
6960 sctp_over_udp_stop();
6963 /* Ok, we have a socket, bind it to the port. */
6964 memset(&sin6, 0, sizeof(struct sockaddr_in6));
6965 sin6.sin6_len = sizeof(struct sockaddr_in6);
6966 sin6.sin6_family = AF_INET6;
6967 sin6.sin6_port = htons(port);
6968 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
6969 (struct sockaddr *)&sin6, curthread))) {
6970 sctp_over_udp_stop();