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_allowed = inp->sctp_ecn_enable;
908 asoc->sctp_nr_sack_on_off = (uint8_t) SCTP_BASE_SYSCTL(sctp_nr_sack_on_off);
909 asoc->sctp_cmt_pf = (uint8_t) 0;
910 asoc->sctp_frag_point = inp->sctp_frag_point;
911 asoc->sctp_features = inp->sctp_features;
912 asoc->default_dscp = inp->sctp_ep.default_dscp;
914 if (inp->sctp_ep.default_flowlabel) {
915 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
917 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
918 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
919 asoc->default_flowlabel &= 0x000fffff;
920 asoc->default_flowlabel |= 0x80000000;
922 asoc->default_flowlabel = 0;
926 asoc->sb_send_resv = 0;
928 asoc->my_vtag = override_tag;
930 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
932 /* Get the nonce tags */
933 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
934 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
935 asoc->vrf_id = vrf_id;
937 #ifdef SCTP_ASOCLOG_OF_TSNS
939 asoc->tsn_out_at = 0;
940 asoc->tsn_in_wrapped = 0;
941 asoc->tsn_out_wrapped = 0;
942 asoc->cumack_log_at = 0;
943 asoc->cumack_log_atsnt = 0;
945 #ifdef SCTP_FS_SPEC_LOG
949 asoc->assoc_up_sent = 0;
950 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
951 sctp_select_initial_TSN(&inp->sctp_ep);
952 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
953 /* we are optimisitic here */
954 asoc->peer_supports_pktdrop = 1;
955 asoc->peer_supports_nat = 0;
956 asoc->sent_queue_retran_cnt = 0;
959 asoc->last_net_cmt_send_started = NULL;
961 /* This will need to be adjusted */
962 asoc->last_acked_seq = asoc->init_seq_number - 1;
963 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
964 asoc->asconf_seq_in = asoc->last_acked_seq;
966 /* here we are different, we hold the next one we expect */
967 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
969 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
970 asoc->initial_rto = inp->sctp_ep.initial_rto;
972 asoc->max_init_times = inp->sctp_ep.max_init_times;
973 asoc->max_send_times = inp->sctp_ep.max_send_times;
974 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
975 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
976 asoc->free_chunk_cnt = 0;
978 asoc->iam_blocking = 0;
979 asoc->context = inp->sctp_context;
980 asoc->local_strreset_support = inp->local_strreset_support;
981 asoc->def_send = inp->def_send;
982 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
983 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
984 asoc->pr_sctp_cnt = 0;
985 asoc->total_output_queue_size = 0;
987 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
988 asoc->scope.ipv6_addr_legal = 1;
989 if (SCTP_IPV6_V6ONLY(inp) == 0) {
990 asoc->scope.ipv4_addr_legal = 1;
992 asoc->scope.ipv4_addr_legal = 0;
995 asoc->scope.ipv6_addr_legal = 0;
996 asoc->scope.ipv4_addr_legal = 1;
999 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1000 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1002 asoc->smallest_mtu = inp->sctp_frag_point;
1003 asoc->minrto = inp->sctp_ep.sctp_minrto;
1004 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1006 asoc->locked_on_sending = NULL;
1007 asoc->stream_locked_on = 0;
1008 asoc->ecn_echo_cnt_onq = 0;
1009 asoc->stream_locked = 0;
1011 asoc->send_sack = 1;
1013 LIST_INIT(&asoc->sctp_restricted_addrs);
1015 TAILQ_INIT(&asoc->nets);
1016 TAILQ_INIT(&asoc->pending_reply_queue);
1017 TAILQ_INIT(&asoc->asconf_ack_sent);
1018 /* Setup to fill the hb random cache at first HB */
1019 asoc->hb_random_idx = 4;
1021 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1023 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1024 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1026 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1027 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1030 * Now the stream parameters, here we allocate space for all streams
1031 * that we request by default.
1033 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1034 inp->sctp_ep.pre_open_stream_count;
1035 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1036 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1038 if (asoc->strmout == NULL) {
1039 /* big trouble no memory */
1040 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1043 for (i = 0; i < asoc->streamoutcnt; i++) {
1045 * inbound side must be set to 0xffff, also NOTE when we get
1046 * the INIT-ACK back (for INIT sender) we MUST reduce the
1047 * count (streamoutcnt) but first check if we sent to any of
1048 * the upper streams that were dropped (if some were). Those
1049 * that were dropped must be notified to the upper layer as
1052 asoc->strmout[i].next_sequence_send = 0x0;
1053 TAILQ_INIT(&asoc->strmout[i].outqueue);
1054 asoc->strmout[i].chunks_on_queues = 0;
1055 asoc->strmout[i].stream_no = i;
1056 asoc->strmout[i].last_msg_incomplete = 0;
1057 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL);
1059 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1061 /* Now the mapping array */
1062 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1063 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1065 if (asoc->mapping_array == NULL) {
1066 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1067 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1070 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1071 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1073 if (asoc->nr_mapping_array == NULL) {
1074 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1075 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1076 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1079 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1081 /* Now the init of the other outqueues */
1082 TAILQ_INIT(&asoc->free_chunks);
1083 TAILQ_INIT(&asoc->control_send_queue);
1084 TAILQ_INIT(&asoc->asconf_send_queue);
1085 TAILQ_INIT(&asoc->send_queue);
1086 TAILQ_INIT(&asoc->sent_queue);
1087 TAILQ_INIT(&asoc->reasmqueue);
1088 TAILQ_INIT(&asoc->resetHead);
1089 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1090 TAILQ_INIT(&asoc->asconf_queue);
1091 /* authentication fields */
1092 asoc->authinfo.random = NULL;
1093 asoc->authinfo.active_keyid = 0;
1094 asoc->authinfo.assoc_key = NULL;
1095 asoc->authinfo.assoc_keyid = 0;
1096 asoc->authinfo.recv_key = NULL;
1097 asoc->authinfo.recv_keyid = 0;
1098 LIST_INIT(&asoc->shared_keys);
1099 asoc->marked_retrans = 0;
1100 asoc->port = inp->sctp_ep.port;
1104 asoc->timoshutdown = 0;
1105 asoc->timoheartbeat = 0;
1106 asoc->timocookie = 0;
1107 asoc->timoshutdownack = 0;
1108 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1109 asoc->discontinuity_time = asoc->start_time;
1111 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1112 * freed later when the association is freed.
1118 sctp_print_mapping_array(struct sctp_association *asoc)
1120 unsigned int i, limit;
1122 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1123 asoc->mapping_array_size,
1124 asoc->mapping_array_base_tsn,
1125 asoc->cumulative_tsn,
1126 asoc->highest_tsn_inside_map,
1127 asoc->highest_tsn_inside_nr_map);
1128 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1129 if (asoc->mapping_array[limit - 1] != 0) {
1133 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1134 for (i = 0; i < limit; i++) {
1135 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1139 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1140 if (asoc->nr_mapping_array[limit - 1]) {
1144 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1145 for (i = 0; i < limit; i++) {
1146 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1153 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1155 /* mapping array needs to grow */
1156 uint8_t *new_array1, *new_array2;
1159 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1160 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1161 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1162 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1163 /* can't get more, forget it */
1164 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1166 SCTP_FREE(new_array1, SCTP_M_MAP);
1169 SCTP_FREE(new_array2, SCTP_M_MAP);
1173 memset(new_array1, 0, new_size);
1174 memset(new_array2, 0, new_size);
1175 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1176 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1177 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1178 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1179 asoc->mapping_array = new_array1;
1180 asoc->nr_mapping_array = new_array2;
1181 asoc->mapping_array_size = new_size;
1187 sctp_iterator_work(struct sctp_iterator *it)
1189 int iteration_count = 0;
1192 struct sctp_inpcb *tinp;
1194 SCTP_INP_INFO_RLOCK();
1195 SCTP_ITERATOR_LOCK();
1197 SCTP_INP_RLOCK(it->inp);
1198 SCTP_INP_DECR_REF(it->inp);
1200 if (it->inp == NULL) {
1201 /* iterator is complete */
1203 SCTP_ITERATOR_UNLOCK();
1204 SCTP_INP_INFO_RUNLOCK();
1205 if (it->function_atend != NULL) {
1206 (*it->function_atend) (it->pointer, it->val);
1208 SCTP_FREE(it, SCTP_M_ITER);
1215 SCTP_INP_RLOCK(it->inp);
1217 while (((it->pcb_flags) &&
1218 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1219 ((it->pcb_features) &&
1220 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1221 /* endpoint flags or features don't match, so keep looking */
1222 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1223 SCTP_INP_RUNLOCK(it->inp);
1224 goto done_with_iterator;
1227 it->inp = LIST_NEXT(it->inp, sctp_list);
1228 SCTP_INP_RUNLOCK(tinp);
1229 if (it->inp == NULL) {
1230 goto done_with_iterator;
1232 SCTP_INP_RLOCK(it->inp);
1234 /* now go through each assoc which is in the desired state */
1235 if (it->done_current_ep == 0) {
1236 if (it->function_inp != NULL)
1237 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1238 it->done_current_ep = 1;
1240 if (it->stcb == NULL) {
1241 /* run the per instance function */
1242 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1244 if ((inp_skip) || it->stcb == NULL) {
1245 if (it->function_inp_end != NULL) {
1246 inp_skip = (*it->function_inp_end) (it->inp,
1250 SCTP_INP_RUNLOCK(it->inp);
1254 SCTP_TCB_LOCK(it->stcb);
1255 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1256 /* not in the right state... keep looking */
1257 SCTP_TCB_UNLOCK(it->stcb);
1260 /* see if we have limited out the iterator loop */
1262 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1263 /* Pause to let others grab the lock */
1264 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1265 SCTP_TCB_UNLOCK(it->stcb);
1266 SCTP_INP_INCR_REF(it->inp);
1267 SCTP_INP_RUNLOCK(it->inp);
1268 SCTP_ITERATOR_UNLOCK();
1269 SCTP_INP_INFO_RUNLOCK();
1270 SCTP_INP_INFO_RLOCK();
1271 SCTP_ITERATOR_LOCK();
1272 if (sctp_it_ctl.iterator_flags) {
1273 /* We won't be staying here */
1274 SCTP_INP_DECR_REF(it->inp);
1275 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1276 if (sctp_it_ctl.iterator_flags &
1277 SCTP_ITERATOR_STOP_CUR_IT) {
1278 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1279 goto done_with_iterator;
1281 if (sctp_it_ctl.iterator_flags &
1282 SCTP_ITERATOR_STOP_CUR_INP) {
1283 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1286 /* If we reach here huh? */
1287 SCTP_PRINTF("Unknown it ctl flag %x\n",
1288 sctp_it_ctl.iterator_flags);
1289 sctp_it_ctl.iterator_flags = 0;
1291 SCTP_INP_RLOCK(it->inp);
1292 SCTP_INP_DECR_REF(it->inp);
1293 SCTP_TCB_LOCK(it->stcb);
1294 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1295 iteration_count = 0;
1297 /* run function on this one */
1298 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1301 * we lie here, it really needs to have its own type but
1302 * first I must verify that this won't effect things :-0
1304 if (it->no_chunk_output == 0)
1305 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1307 SCTP_TCB_UNLOCK(it->stcb);
1309 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1310 if (it->stcb == NULL) {
1311 /* Run last function */
1312 if (it->function_inp_end != NULL) {
1313 inp_skip = (*it->function_inp_end) (it->inp,
1319 SCTP_INP_RUNLOCK(it->inp);
1321 /* done with all assocs on this endpoint, move on to next endpoint */
1322 it->done_current_ep = 0;
1323 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1326 it->inp = LIST_NEXT(it->inp, sctp_list);
1328 if (it->inp == NULL) {
1329 goto done_with_iterator;
1331 goto select_a_new_ep;
1335 sctp_iterator_worker(void)
1337 struct sctp_iterator *it, *nit;
1339 /* This function is called with the WQ lock in place */
1341 sctp_it_ctl.iterator_running = 1;
1342 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1343 sctp_it_ctl.cur_it = it;
1344 /* now lets work on this one */
1345 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1346 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1347 CURVNET_SET(it->vn);
1348 sctp_iterator_work(it);
1349 sctp_it_ctl.cur_it = NULL;
1351 SCTP_IPI_ITERATOR_WQ_LOCK();
1352 /* sa_ignore FREED_MEMORY */
1354 sctp_it_ctl.iterator_running = 0;
1360 sctp_handle_addr_wq(void)
1362 /* deal with the ADDR wq from the rtsock calls */
1363 struct sctp_laddr *wi, *nwi;
1364 struct sctp_asconf_iterator *asc;
1366 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1367 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1369 /* Try later, no memory */
1370 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1371 (struct sctp_inpcb *)NULL,
1372 (struct sctp_tcb *)NULL,
1373 (struct sctp_nets *)NULL);
1376 LIST_INIT(&asc->list_of_work);
1379 SCTP_WQ_ADDR_LOCK();
1380 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1381 LIST_REMOVE(wi, sctp_nxt_addr);
1382 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1385 SCTP_WQ_ADDR_UNLOCK();
1387 if (asc->cnt == 0) {
1388 SCTP_FREE(asc, SCTP_M_ASC_IT);
1390 (void)sctp_initiate_iterator(sctp_asconf_iterator_ep,
1391 sctp_asconf_iterator_stcb,
1392 NULL, /* No ep end for boundall */
1393 SCTP_PCB_FLAGS_BOUNDALL,
1394 SCTP_PCB_ANY_FEATURES,
1395 SCTP_ASOC_ANY_STATE,
1397 sctp_asconf_iterator_end, NULL, 0);
1402 sctp_timeout_handler(void *t)
1404 struct sctp_inpcb *inp;
1405 struct sctp_tcb *stcb;
1406 struct sctp_nets *net;
1407 struct sctp_timer *tmr;
1409 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1413 int did_output, type;
1415 tmr = (struct sctp_timer *)t;
1416 inp = (struct sctp_inpcb *)tmr->ep;
1417 stcb = (struct sctp_tcb *)tmr->tcb;
1418 net = (struct sctp_nets *)tmr->net;
1419 CURVNET_SET((struct vnet *)tmr->vnet);
1422 #ifdef SCTP_AUDITING_ENABLED
1423 sctp_audit_log(0xF0, (uint8_t) tmr->type);
1424 sctp_auditing(3, inp, stcb, net);
1427 /* sanity checks... */
1428 if (tmr->self != (void *)tmr) {
1430 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1436 tmr->stopped_from = 0xa001;
1437 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1439 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1445 tmr->stopped_from = 0xa002;
1446 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1450 /* if this is an iterator timeout, get the struct and clear inp */
1451 tmr->stopped_from = 0xa003;
1454 SCTP_INP_INCR_REF(inp);
1455 if ((inp->sctp_socket == NULL) &&
1456 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1457 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1458 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1459 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1460 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1461 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1462 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1463 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1464 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1466 SCTP_INP_DECR_REF(inp);
1471 tmr->stopped_from = 0xa004;
1473 atomic_add_int(&stcb->asoc.refcnt, 1);
1474 if (stcb->asoc.state == 0) {
1475 atomic_add_int(&stcb->asoc.refcnt, -1);
1477 SCTP_INP_DECR_REF(inp);
1483 tmr->stopped_from = 0xa005;
1484 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", tmr->type);
1485 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1487 SCTP_INP_DECR_REF(inp);
1490 atomic_add_int(&stcb->asoc.refcnt, -1);
1495 tmr->stopped_from = 0xa006;
1498 SCTP_TCB_LOCK(stcb);
1499 atomic_add_int(&stcb->asoc.refcnt, -1);
1500 if ((tmr->type != SCTP_TIMER_TYPE_ASOCKILL) &&
1501 ((stcb->asoc.state == 0) ||
1502 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1503 SCTP_TCB_UNLOCK(stcb);
1505 SCTP_INP_DECR_REF(inp);
1511 /* record in stopped what t-o occured */
1512 tmr->stopped_from = tmr->type;
1514 /* mark as being serviced now */
1515 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1517 * Callout has been rescheduled.
1521 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1523 * Not active, so no action.
1527 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1529 /* call the handler for the appropriate timer type */
1530 switch (tmr->type) {
1531 case SCTP_TIMER_TYPE_ZERO_COPY:
1535 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1536 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1539 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1543 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1544 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1547 case SCTP_TIMER_TYPE_ADDR_WQ:
1548 sctp_handle_addr_wq();
1550 case SCTP_TIMER_TYPE_SEND:
1551 if ((stcb == NULL) || (inp == NULL)) {
1554 SCTP_STAT_INCR(sctps_timodata);
1555 stcb->asoc.timodata++;
1556 stcb->asoc.num_send_timers_up--;
1557 if (stcb->asoc.num_send_timers_up < 0) {
1558 stcb->asoc.num_send_timers_up = 0;
1560 SCTP_TCB_LOCK_ASSERT(stcb);
1561 if (sctp_t3rxt_timer(inp, stcb, net)) {
1562 /* no need to unlock on tcb its gone */
1566 SCTP_TCB_LOCK_ASSERT(stcb);
1567 #ifdef SCTP_AUDITING_ENABLED
1568 sctp_auditing(4, inp, stcb, net);
1570 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1571 if ((stcb->asoc.num_send_timers_up == 0) &&
1572 (stcb->asoc.sent_queue_cnt > 0)) {
1573 struct sctp_tmit_chunk *chk;
1576 * safeguard. If there on some on the sent queue
1577 * somewhere but no timers running something is
1578 * wrong... so we start a timer on the first chunk
1579 * on the send queue on whatever net it is sent to.
1581 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1582 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1586 case SCTP_TIMER_TYPE_INIT:
1587 if ((stcb == NULL) || (inp == NULL)) {
1590 SCTP_STAT_INCR(sctps_timoinit);
1591 stcb->asoc.timoinit++;
1592 if (sctp_t1init_timer(inp, stcb, net)) {
1593 /* no need to unlock on tcb its gone */
1596 /* We do output but not here */
1599 case SCTP_TIMER_TYPE_RECV:
1600 if ((stcb == NULL) || (inp == NULL)) {
1603 SCTP_STAT_INCR(sctps_timosack);
1604 stcb->asoc.timosack++;
1605 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1606 #ifdef SCTP_AUDITING_ENABLED
1607 sctp_auditing(4, inp, stcb, net);
1609 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1611 case SCTP_TIMER_TYPE_SHUTDOWN:
1612 if ((stcb == NULL) || (inp == NULL)) {
1615 if (sctp_shutdown_timer(inp, stcb, net)) {
1616 /* no need to unlock on tcb its gone */
1619 SCTP_STAT_INCR(sctps_timoshutdown);
1620 stcb->asoc.timoshutdown++;
1621 #ifdef SCTP_AUDITING_ENABLED
1622 sctp_auditing(4, inp, stcb, net);
1624 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1626 case SCTP_TIMER_TYPE_HEARTBEAT:
1627 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1630 SCTP_STAT_INCR(sctps_timoheartbeat);
1631 stcb->asoc.timoheartbeat++;
1632 if (sctp_heartbeat_timer(inp, stcb, net)) {
1633 /* no need to unlock on tcb its gone */
1636 #ifdef SCTP_AUDITING_ENABLED
1637 sctp_auditing(4, inp, stcb, net);
1639 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1640 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1641 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1644 case SCTP_TIMER_TYPE_COOKIE:
1645 if ((stcb == NULL) || (inp == NULL)) {
1648 if (sctp_cookie_timer(inp, stcb, net)) {
1649 /* no need to unlock on tcb its gone */
1652 SCTP_STAT_INCR(sctps_timocookie);
1653 stcb->asoc.timocookie++;
1654 #ifdef SCTP_AUDITING_ENABLED
1655 sctp_auditing(4, inp, stcb, net);
1658 * We consider T3 and Cookie timer pretty much the same with
1659 * respect to where from in chunk_output.
1661 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1663 case SCTP_TIMER_TYPE_NEWCOOKIE:
1671 SCTP_STAT_INCR(sctps_timosecret);
1672 (void)SCTP_GETTIME_TIMEVAL(&tv);
1673 SCTP_INP_WLOCK(inp);
1674 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1675 inp->sctp_ep.last_secret_number =
1676 inp->sctp_ep.current_secret_number;
1677 inp->sctp_ep.current_secret_number++;
1678 if (inp->sctp_ep.current_secret_number >=
1679 SCTP_HOW_MANY_SECRETS) {
1680 inp->sctp_ep.current_secret_number = 0;
1682 secret = (int)inp->sctp_ep.current_secret_number;
1683 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1684 inp->sctp_ep.secret_key[secret][i] =
1685 sctp_select_initial_TSN(&inp->sctp_ep);
1687 SCTP_INP_WUNLOCK(inp);
1688 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1692 case SCTP_TIMER_TYPE_PATHMTURAISE:
1693 if ((stcb == NULL) || (inp == NULL)) {
1696 SCTP_STAT_INCR(sctps_timopathmtu);
1697 sctp_pathmtu_timer(inp, stcb, net);
1700 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1701 if ((stcb == NULL) || (inp == NULL)) {
1704 if (sctp_shutdownack_timer(inp, stcb, net)) {
1705 /* no need to unlock on tcb its gone */
1708 SCTP_STAT_INCR(sctps_timoshutdownack);
1709 stcb->asoc.timoshutdownack++;
1710 #ifdef SCTP_AUDITING_ENABLED
1711 sctp_auditing(4, inp, stcb, net);
1713 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1715 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1716 if ((stcb == NULL) || (inp == NULL)) {
1719 SCTP_STAT_INCR(sctps_timoshutdownguard);
1720 sctp_abort_an_association(inp, stcb, NULL, SCTP_SO_NOT_LOCKED);
1721 /* no need to unlock on tcb its gone */
1724 case SCTP_TIMER_TYPE_STRRESET:
1725 if ((stcb == NULL) || (inp == NULL)) {
1728 if (sctp_strreset_timer(inp, stcb, net)) {
1729 /* no need to unlock on tcb its gone */
1732 SCTP_STAT_INCR(sctps_timostrmrst);
1733 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1735 case SCTP_TIMER_TYPE_ASCONF:
1736 if ((stcb == NULL) || (inp == NULL)) {
1739 if (sctp_asconf_timer(inp, stcb, net)) {
1740 /* no need to unlock on tcb its gone */
1743 SCTP_STAT_INCR(sctps_timoasconf);
1744 #ifdef SCTP_AUDITING_ENABLED
1745 sctp_auditing(4, inp, stcb, net);
1747 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1749 case SCTP_TIMER_TYPE_PRIM_DELETED:
1750 if ((stcb == NULL) || (inp == NULL)) {
1753 sctp_delete_prim_timer(inp, stcb, net);
1754 SCTP_STAT_INCR(sctps_timodelprim);
1757 case SCTP_TIMER_TYPE_AUTOCLOSE:
1758 if ((stcb == NULL) || (inp == NULL)) {
1761 SCTP_STAT_INCR(sctps_timoautoclose);
1762 sctp_autoclose_timer(inp, stcb, net);
1763 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1766 case SCTP_TIMER_TYPE_ASOCKILL:
1767 if ((stcb == NULL) || (inp == NULL)) {
1770 SCTP_STAT_INCR(sctps_timoassockill);
1771 /* Can we free it yet? */
1772 SCTP_INP_DECR_REF(inp);
1773 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1774 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1775 so = SCTP_INP_SO(inp);
1776 atomic_add_int(&stcb->asoc.refcnt, 1);
1777 SCTP_TCB_UNLOCK(stcb);
1778 SCTP_SOCKET_LOCK(so, 1);
1779 SCTP_TCB_LOCK(stcb);
1780 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1782 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1783 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1784 SCTP_SOCKET_UNLOCK(so, 1);
1787 * free asoc, always unlocks (or destroy's) so prevent
1788 * duplicate unlock or unlock of a free mtx :-0
1792 case SCTP_TIMER_TYPE_INPKILL:
1793 SCTP_STAT_INCR(sctps_timoinpkill);
1798 * special case, take away our increment since WE are the
1801 SCTP_INP_DECR_REF(inp);
1802 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1803 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1804 SCTP_CALLED_FROM_INPKILL_TIMER);
1808 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1812 #ifdef SCTP_AUDITING_ENABLED
1813 sctp_audit_log(0xF1, (uint8_t) tmr->type);
1815 sctp_auditing(5, inp, stcb, net);
1817 if ((did_output) && stcb) {
1819 * Now we need to clean up the control chunk chain if an
1820 * ECNE is on it. It must be marked as UNSENT again so next
1821 * call will continue to send it until such time that we get
1822 * a CWR, to remove it. It is, however, less likely that we
1823 * will find a ecn echo on the chain though.
1825 sctp_fix_ecn_echo(&stcb->asoc);
1829 SCTP_TCB_UNLOCK(stcb);
1833 SCTP_INP_DECR_REF(inp);
1836 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type %d)\n",
1842 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1843 struct sctp_nets *net)
1846 struct sctp_timer *tmr;
1848 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1853 SCTP_TCB_LOCK_ASSERT(stcb);
1856 case SCTP_TIMER_TYPE_ZERO_COPY:
1857 tmr = &inp->sctp_ep.zero_copy_timer;
1858 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1860 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1861 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1862 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1864 case SCTP_TIMER_TYPE_ADDR_WQ:
1865 /* Only 1 tick away :-) */
1866 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1867 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1869 case SCTP_TIMER_TYPE_SEND:
1870 /* Here we use the RTO timer */
1874 if ((stcb == NULL) || (net == NULL)) {
1877 tmr = &net->rxt_timer;
1878 if (net->RTO == 0) {
1879 rto_val = stcb->asoc.initial_rto;
1883 to_ticks = MSEC_TO_TICKS(rto_val);
1886 case SCTP_TIMER_TYPE_INIT:
1888 * Here we use the INIT timer default usually about 1
1891 if ((stcb == NULL) || (net == NULL)) {
1894 tmr = &net->rxt_timer;
1895 if (net->RTO == 0) {
1896 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1898 to_ticks = MSEC_TO_TICKS(net->RTO);
1901 case SCTP_TIMER_TYPE_RECV:
1903 * Here we use the Delayed-Ack timer value from the inp
1904 * ususually about 200ms.
1909 tmr = &stcb->asoc.dack_timer;
1910 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
1912 case SCTP_TIMER_TYPE_SHUTDOWN:
1913 /* Here we use the RTO of the destination. */
1914 if ((stcb == NULL) || (net == NULL)) {
1917 if (net->RTO == 0) {
1918 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1920 to_ticks = MSEC_TO_TICKS(net->RTO);
1922 tmr = &net->rxt_timer;
1924 case SCTP_TIMER_TYPE_HEARTBEAT:
1926 * the net is used here so that we can add in the RTO. Even
1927 * though we use a different timer. We also add the HB timer
1928 * PLUS a random jitter.
1930 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
1936 if ((net->dest_state & SCTP_ADDR_NOHB) &&
1937 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
1940 if (net->RTO == 0) {
1941 to_ticks = stcb->asoc.initial_rto;
1943 to_ticks = net->RTO;
1945 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
1946 jitter = rndval % to_ticks;
1947 if (jitter >= (to_ticks >> 1)) {
1948 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
1950 to_ticks = to_ticks - jitter;
1952 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
1953 !(net->dest_state & SCTP_ADDR_PF)) {
1954 to_ticks += net->heart_beat_delay;
1957 * Now we must convert the to_ticks that are now in
1960 to_ticks = MSEC_TO_TICKS(to_ticks);
1961 tmr = &net->hb_timer;
1964 case SCTP_TIMER_TYPE_COOKIE:
1966 * Here we can use the RTO timer from the network since one
1967 * RTT was compelete. If a retran happened then we will be
1968 * using the RTO initial value.
1970 if ((stcb == NULL) || (net == NULL)) {
1973 if (net->RTO == 0) {
1974 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1976 to_ticks = MSEC_TO_TICKS(net->RTO);
1978 tmr = &net->rxt_timer;
1980 case SCTP_TIMER_TYPE_NEWCOOKIE:
1982 * nothing needed but the endpoint here ususually about 60
1988 tmr = &inp->sctp_ep.signature_change;
1989 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
1991 case SCTP_TIMER_TYPE_ASOCKILL:
1995 tmr = &stcb->asoc.strreset_timer;
1996 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
1998 case SCTP_TIMER_TYPE_INPKILL:
2000 * The inp is setup to die. We re-use the signature_chage
2001 * timer since that has stopped and we are in the GONE
2007 tmr = &inp->sctp_ep.signature_change;
2008 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2010 case SCTP_TIMER_TYPE_PATHMTURAISE:
2012 * Here we use the value found in the EP for PMTU ususually
2015 if ((stcb == NULL) || (inp == NULL)) {
2021 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2024 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2025 tmr = &net->pmtu_timer;
2027 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2028 /* Here we use the RTO of the destination */
2029 if ((stcb == NULL) || (net == NULL)) {
2032 if (net->RTO == 0) {
2033 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2035 to_ticks = MSEC_TO_TICKS(net->RTO);
2037 tmr = &net->rxt_timer;
2039 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2041 * Here we use the endpoints shutdown guard timer usually
2044 if ((inp == NULL) || (stcb == NULL)) {
2047 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2048 tmr = &stcb->asoc.shut_guard_timer;
2050 case SCTP_TIMER_TYPE_STRRESET:
2052 * Here the timer comes from the stcb but its value is from
2055 if ((stcb == NULL) || (net == NULL)) {
2058 if (net->RTO == 0) {
2059 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2061 to_ticks = MSEC_TO_TICKS(net->RTO);
2063 tmr = &stcb->asoc.strreset_timer;
2065 case SCTP_TIMER_TYPE_ASCONF:
2067 * Here the timer comes from the stcb but its value is from
2070 if ((stcb == NULL) || (net == NULL)) {
2073 if (net->RTO == 0) {
2074 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2076 to_ticks = MSEC_TO_TICKS(net->RTO);
2078 tmr = &stcb->asoc.asconf_timer;
2080 case SCTP_TIMER_TYPE_PRIM_DELETED:
2081 if ((stcb == NULL) || (net != NULL)) {
2084 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2085 tmr = &stcb->asoc.delete_prim_timer;
2087 case SCTP_TIMER_TYPE_AUTOCLOSE:
2091 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2093 * Really an error since stcb is NOT set to
2098 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2099 tmr = &stcb->asoc.autoclose_timer;
2102 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2103 __FUNCTION__, t_type);
2107 if ((to_ticks <= 0) || (tmr == NULL)) {
2108 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2109 __FUNCTION__, t_type, to_ticks, (void *)tmr);
2112 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2114 * we do NOT allow you to have it already running. if it is
2115 * we leave the current one up unchanged
2119 /* At this point we can proceed */
2120 if (t_type == SCTP_TIMER_TYPE_SEND) {
2121 stcb->asoc.num_send_timers_up++;
2123 tmr->stopped_from = 0;
2125 tmr->ep = (void *)inp;
2126 tmr->tcb = (void *)stcb;
2127 tmr->net = (void *)net;
2128 tmr->self = (void *)tmr;
2129 tmr->vnet = (void *)curvnet;
2130 tmr->ticks = sctp_get_tick_count();
2131 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2136 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2137 struct sctp_nets *net, uint32_t from)
2139 struct sctp_timer *tmr;
2141 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2147 SCTP_TCB_LOCK_ASSERT(stcb);
2150 case SCTP_TIMER_TYPE_ZERO_COPY:
2151 tmr = &inp->sctp_ep.zero_copy_timer;
2153 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2154 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2156 case SCTP_TIMER_TYPE_ADDR_WQ:
2157 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2159 case SCTP_TIMER_TYPE_SEND:
2160 if ((stcb == NULL) || (net == NULL)) {
2163 tmr = &net->rxt_timer;
2165 case SCTP_TIMER_TYPE_INIT:
2166 if ((stcb == NULL) || (net == NULL)) {
2169 tmr = &net->rxt_timer;
2171 case SCTP_TIMER_TYPE_RECV:
2175 tmr = &stcb->asoc.dack_timer;
2177 case SCTP_TIMER_TYPE_SHUTDOWN:
2178 if ((stcb == NULL) || (net == NULL)) {
2181 tmr = &net->rxt_timer;
2183 case SCTP_TIMER_TYPE_HEARTBEAT:
2184 if ((stcb == NULL) || (net == NULL)) {
2187 tmr = &net->hb_timer;
2189 case SCTP_TIMER_TYPE_COOKIE:
2190 if ((stcb == NULL) || (net == NULL)) {
2193 tmr = &net->rxt_timer;
2195 case SCTP_TIMER_TYPE_NEWCOOKIE:
2196 /* nothing needed but the endpoint here */
2197 tmr = &inp->sctp_ep.signature_change;
2199 * We re-use the newcookie timer for the INP kill timer. We
2200 * must assure that we do not kill it by accident.
2203 case SCTP_TIMER_TYPE_ASOCKILL:
2205 * Stop the asoc kill timer.
2210 tmr = &stcb->asoc.strreset_timer;
2213 case SCTP_TIMER_TYPE_INPKILL:
2215 * The inp is setup to die. We re-use the signature_chage
2216 * timer since that has stopped and we are in the GONE
2219 tmr = &inp->sctp_ep.signature_change;
2221 case SCTP_TIMER_TYPE_PATHMTURAISE:
2222 if ((stcb == NULL) || (net == NULL)) {
2225 tmr = &net->pmtu_timer;
2227 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2228 if ((stcb == NULL) || (net == NULL)) {
2231 tmr = &net->rxt_timer;
2233 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2237 tmr = &stcb->asoc.shut_guard_timer;
2239 case SCTP_TIMER_TYPE_STRRESET:
2243 tmr = &stcb->asoc.strreset_timer;
2245 case SCTP_TIMER_TYPE_ASCONF:
2249 tmr = &stcb->asoc.asconf_timer;
2251 case SCTP_TIMER_TYPE_PRIM_DELETED:
2255 tmr = &stcb->asoc.delete_prim_timer;
2257 case SCTP_TIMER_TYPE_AUTOCLOSE:
2261 tmr = &stcb->asoc.autoclose_timer;
2264 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2265 __FUNCTION__, t_type);
2271 if ((tmr->type != t_type) && tmr->type) {
2273 * Ok we have a timer that is under joint use. Cookie timer
2274 * per chance with the SEND timer. We therefore are NOT
2275 * running the timer that the caller wants stopped. So just
2280 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2281 stcb->asoc.num_send_timers_up--;
2282 if (stcb->asoc.num_send_timers_up < 0) {
2283 stcb->asoc.num_send_timers_up = 0;
2287 tmr->stopped_from = from;
2288 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2293 sctp_calculate_len(struct mbuf *m)
2300 tlen += SCTP_BUF_LEN(at);
2301 at = SCTP_BUF_NEXT(at);
2307 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2308 struct sctp_association *asoc, uint32_t mtu)
2311 * Reset the P-MTU size on this association, this involves changing
2312 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2313 * allow the DF flag to be cleared.
2315 struct sctp_tmit_chunk *chk;
2316 unsigned int eff_mtu, ovh;
2318 asoc->smallest_mtu = mtu;
2319 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2320 ovh = SCTP_MIN_OVERHEAD;
2322 ovh = SCTP_MIN_V4_OVERHEAD;
2324 eff_mtu = mtu - ovh;
2325 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2326 if (chk->send_size > eff_mtu) {
2327 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2330 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2331 if (chk->send_size > eff_mtu) {
2332 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2339 * given an association and starting time of the current RTT period return
2340 * RTO in number of msecs net should point to the current network
2344 sctp_calculate_rto(struct sctp_tcb *stcb,
2345 struct sctp_association *asoc,
2346 struct sctp_nets *net,
2347 struct timeval *told,
2348 int safe, int rtt_from_sack)
2351 * given an association and the starting time of the current RTT
2352 * period (in value1/value2) return RTO in number of msecs.
2354 int32_t rtt; /* RTT in ms */
2356 int first_measure = 0;
2357 struct timeval now, then, *old;
2359 /* Copy it out for sparc64 */
2360 if (safe == sctp_align_unsafe_makecopy) {
2362 memcpy(&then, told, sizeof(struct timeval));
2363 } else if (safe == sctp_align_safe_nocopy) {
2367 SCTP_PRINTF("Huh, bad rto calc call\n");
2370 /************************/
2371 /* 1. calculate new RTT */
2372 /************************/
2373 /* get the current time */
2374 if (stcb->asoc.use_precise_time) {
2375 (void)SCTP_GETPTIME_TIMEVAL(&now);
2377 (void)SCTP_GETTIME_TIMEVAL(&now);
2379 timevalsub(&now, old);
2380 /* store the current RTT in us */
2381 net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec +
2382 (uint64_t) now.tv_usec;
2384 /* computer rtt in ms */
2385 rtt = net->rtt / 1000;
2386 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2388 * Tell the CC module that a new update has just occurred
2391 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2394 * Do we need to determine the lan? We do this only on sacks i.e.
2395 * RTT being determined from data not non-data (HB/INIT->INITACK).
2397 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2398 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2399 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2400 net->lan_type = SCTP_LAN_INTERNET;
2402 net->lan_type = SCTP_LAN_LOCAL;
2405 /***************************/
2406 /* 2. update RTTVAR & SRTT */
2407 /***************************/
2409 * Compute the scaled average lastsa and the
2410 * scaled variance lastsv as described in van Jacobson
2411 * Paper "Congestion Avoidance and Control", Annex A.
2413 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2414 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2416 if (net->RTO_measured) {
2417 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2422 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2424 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2425 rto_logging(net, SCTP_LOG_RTTVAR);
2428 /* First RTO measurment */
2429 net->RTO_measured = 1;
2431 net->lastsa = rtt << SCTP_RTT_SHIFT;
2432 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2433 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2434 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2437 if (net->lastsv == 0) {
2438 net->lastsv = SCTP_CLOCK_GRANULARITY;
2440 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2441 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2442 (stcb->asoc.sat_network_lockout == 0)) {
2443 stcb->asoc.sat_network = 1;
2444 } else if ((!first_measure) && stcb->asoc.sat_network) {
2445 stcb->asoc.sat_network = 0;
2446 stcb->asoc.sat_network_lockout = 1;
2448 /* bound it, per C6/C7 in Section 5.3.1 */
2449 if (new_rto < stcb->asoc.minrto) {
2450 new_rto = stcb->asoc.minrto;
2452 if (new_rto > stcb->asoc.maxrto) {
2453 new_rto = stcb->asoc.maxrto;
2455 /* we are now returning the RTO */
2460 * return a pointer to a contiguous piece of data from the given mbuf chain
2461 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2462 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2463 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2466 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
2472 if ((off < 0) || (len <= 0))
2475 /* find the desired start location */
2476 while ((m != NULL) && (off > 0)) {
2477 if (off < SCTP_BUF_LEN(m))
2479 off -= SCTP_BUF_LEN(m);
2480 m = SCTP_BUF_NEXT(m);
2485 /* is the current mbuf large enough (eg. contiguous)? */
2486 if ((SCTP_BUF_LEN(m) - off) >= len) {
2487 return (mtod(m, caddr_t)+off);
2489 /* else, it spans more than one mbuf, so save a temp copy... */
2490 while ((m != NULL) && (len > 0)) {
2491 count = min(SCTP_BUF_LEN(m) - off, len);
2492 bcopy(mtod(m, caddr_t)+off, ptr, count);
2496 m = SCTP_BUF_NEXT(m);
2498 if ((m == NULL) && (len > 0))
2501 return ((caddr_t)in_ptr);
2507 struct sctp_paramhdr *
2508 sctp_get_next_param(struct mbuf *m,
2510 struct sctp_paramhdr *pull,
2513 /* This just provides a typed signature to Peter's Pull routine */
2514 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2520 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2523 * add padlen bytes of 0 filled padding to the end of the mbuf. If
2524 * padlen is > 3 this routine will fail.
2530 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
2533 if (padlen <= M_TRAILINGSPACE(m)) {
2535 * The easy way. We hope the majority of the time we hit
2538 dp = (uint8_t *) (mtod(m, caddr_t)+SCTP_BUF_LEN(m));
2539 SCTP_BUF_LEN(m) += padlen;
2541 /* Hard way we must grow the mbuf */
2544 tmp = sctp_get_mbuf_for_msg(padlen, 0, M_DONTWAIT, 1, MT_DATA);
2546 /* Out of space GAK! we are in big trouble. */
2547 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
2550 /* setup and insert in middle */
2551 SCTP_BUF_LEN(tmp) = padlen;
2552 SCTP_BUF_NEXT(tmp) = NULL;
2553 SCTP_BUF_NEXT(m) = tmp;
2554 dp = mtod(tmp, uint8_t *);
2556 /* zero out the pad */
2557 for (i = 0; i < padlen; i++) {
2565 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2567 /* find the last mbuf in chain and pad it */
2571 return (sctp_add_pad_tombuf(last_mbuf, padval));
2573 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2574 if (SCTP_BUF_NEXT(m_at) == NULL) {
2575 return (sctp_add_pad_tombuf(m_at, padval));
2579 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
2584 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2585 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2586 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2591 struct mbuf *m_notify;
2592 struct sctp_assoc_change *sac;
2593 struct sctp_queued_to_read *control;
2594 size_t notif_len, abort_len;
2597 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2602 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2603 notif_len = sizeof(struct sctp_assoc_change);
2604 if (abort != NULL) {
2605 abort_len = ntohs(abort->ch.chunk_length);
2609 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2610 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2611 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2612 notif_len += abort_len;
2614 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_DONTWAIT, 1, MT_DATA);
2615 if (m_notify == NULL) {
2616 /* Retry with smaller value. */
2617 notif_len = sizeof(struct sctp_assoc_change);
2618 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_DONTWAIT, 1, MT_DATA);
2619 if (m_notify == NULL) {
2623 SCTP_BUF_NEXT(m_notify) = NULL;
2624 sac = mtod(m_notify, struct sctp_assoc_change *);
2625 sac->sac_type = SCTP_ASSOC_CHANGE;
2627 sac->sac_length = sizeof(struct sctp_assoc_change);
2628 sac->sac_state = state;
2629 sac->sac_error = error;
2630 /* XXX verify these stream counts */
2631 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2632 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2633 sac->sac_assoc_id = sctp_get_associd(stcb);
2634 if (notif_len > sizeof(struct sctp_assoc_change)) {
2635 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2637 if (stcb->asoc.peer_supports_prsctp) {
2638 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2640 if (stcb->asoc.peer_supports_auth) {
2641 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2643 if (stcb->asoc.peer_supports_asconf) {
2644 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2646 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2647 if (stcb->asoc.peer_supports_strreset) {
2648 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2650 sac->sac_length += i;
2651 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2652 memcpy(sac->sac_info, abort, abort_len);
2653 sac->sac_length += abort_len;
2656 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2657 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2658 0, 0, stcb->asoc.context, 0, 0, 0,
2660 if (control != NULL) {
2661 control->length = SCTP_BUF_LEN(m_notify);
2662 /* not that we need this */
2663 control->tail_mbuf = m_notify;
2664 control->spec_flags = M_NOTIFICATION;
2665 sctp_add_to_readq(stcb->sctp_ep, stcb,
2667 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2670 sctp_m_freem(m_notify);
2674 * For 1-to-1 style sockets, we send up and error when an ABORT
2678 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2679 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2680 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2681 SOCK_LOCK(stcb->sctp_socket);
2683 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2684 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2685 stcb->sctp_socket->so_error = ECONNREFUSED;
2687 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2688 stcb->sctp_socket->so_error = ECONNRESET;
2691 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2692 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2693 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2694 stcb->sctp_socket->so_error = ETIMEDOUT;
2696 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2697 stcb->sctp_socket->so_error = ECONNABORTED;
2701 /* Wake ANY sleepers */
2702 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2703 so = SCTP_INP_SO(stcb->sctp_ep);
2705 atomic_add_int(&stcb->asoc.refcnt, 1);
2706 SCTP_TCB_UNLOCK(stcb);
2707 SCTP_SOCKET_LOCK(so, 1);
2708 SCTP_TCB_LOCK(stcb);
2709 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2710 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2711 SCTP_SOCKET_UNLOCK(so, 1);
2716 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2717 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2718 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2719 socantrcvmore_locked(stcb->sctp_socket);
2721 sorwakeup(stcb->sctp_socket);
2722 sowwakeup(stcb->sctp_socket);
2723 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2725 SCTP_SOCKET_UNLOCK(so, 1);
2731 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2732 struct sockaddr *sa, uint32_t error)
2734 struct mbuf *m_notify;
2735 struct sctp_paddr_change *spc;
2736 struct sctp_queued_to_read *control;
2738 if ((stcb == NULL) ||
2739 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2740 /* event not enabled */
2743 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_DONTWAIT, 1, MT_DATA);
2744 if (m_notify == NULL)
2746 SCTP_BUF_LEN(m_notify) = 0;
2747 spc = mtod(m_notify, struct sctp_paddr_change *);
2748 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2750 spc->spc_length = sizeof(struct sctp_paddr_change);
2751 switch (sa->sa_family) {
2754 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2760 struct sockaddr_in6 *sin6;
2762 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2764 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2765 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2766 if (sin6->sin6_scope_id == 0) {
2767 /* recover scope_id for user */
2768 (void)sa6_recoverscope(sin6);
2770 /* clear embedded scope_id for user */
2771 in6_clearscope(&sin6->sin6_addr);
2781 spc->spc_state = state;
2782 spc->spc_error = error;
2783 spc->spc_assoc_id = sctp_get_associd(stcb);
2785 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2786 SCTP_BUF_NEXT(m_notify) = NULL;
2788 /* append to socket */
2789 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2790 0, 0, stcb->asoc.context, 0, 0, 0,
2792 if (control == NULL) {
2794 sctp_m_freem(m_notify);
2797 control->length = SCTP_BUF_LEN(m_notify);
2798 control->spec_flags = M_NOTIFICATION;
2799 /* not that we need this */
2800 control->tail_mbuf = m_notify;
2801 sctp_add_to_readq(stcb->sctp_ep, stcb,
2803 &stcb->sctp_socket->so_rcv, 1,
2804 SCTP_READ_LOCK_NOT_HELD,
2805 SCTP_SO_NOT_LOCKED);
2810 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2811 struct sctp_tmit_chunk *chk, int so_locked
2812 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2817 struct mbuf *m_notify;
2818 struct sctp_send_failed *ssf;
2819 struct sctp_send_failed_event *ssfe;
2820 struct sctp_queued_to_read *control;
2823 if ((stcb == NULL) ||
2824 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2825 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2826 /* event not enabled */
2829 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2830 length = sizeof(struct sctp_send_failed_event);
2832 length = sizeof(struct sctp_send_failed);
2834 m_notify = sctp_get_mbuf_for_msg(length, 0, M_DONTWAIT, 1, MT_DATA);
2835 if (m_notify == NULL)
2838 length += chk->send_size;
2839 length -= sizeof(struct sctp_data_chunk);
2840 SCTP_BUF_LEN(m_notify) = 0;
2841 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2842 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2843 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2845 ssfe->ssfe_flags = SCTP_DATA_SENT;
2847 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2849 ssfe->ssfe_length = length;
2850 ssfe->ssfe_error = error;
2851 /* not exactly what the user sent in, but should be close :) */
2852 bzero(&ssfe->ssfe_info, sizeof(ssfe->ssfe_info));
2853 ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number;
2854 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2855 ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype;
2856 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2857 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2858 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2859 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2861 ssf = mtod(m_notify, struct sctp_send_failed *);
2862 ssf->ssf_type = SCTP_SEND_FAILED;
2864 ssf->ssf_flags = SCTP_DATA_SENT;
2866 ssf->ssf_flags = SCTP_DATA_UNSENT;
2868 ssf->ssf_length = length;
2869 ssf->ssf_error = error;
2870 /* not exactly what the user sent in, but should be close :) */
2871 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2872 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2873 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2874 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2875 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2876 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2877 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2878 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2879 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2883 * trim off the sctp chunk header(it should be there)
2885 if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
2886 m_adj(chk->data, sizeof(struct sctp_data_chunk));
2887 sctp_mbuf_crush(chk->data);
2888 chk->send_size -= sizeof(struct sctp_data_chunk);
2891 SCTP_BUF_NEXT(m_notify) = chk->data;
2892 /* Steal off the mbuf */
2895 * For this case, we check the actual socket buffer, since the assoc
2896 * is going away we don't want to overfill the socket buffer for a
2899 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
2900 sctp_m_freem(m_notify);
2903 /* append to socket */
2904 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2905 0, 0, stcb->asoc.context, 0, 0, 0,
2907 if (control == NULL) {
2909 sctp_m_freem(m_notify);
2912 control->spec_flags = M_NOTIFICATION;
2913 sctp_add_to_readq(stcb->sctp_ep, stcb,
2915 &stcb->sctp_socket->so_rcv, 1,
2916 SCTP_READ_LOCK_NOT_HELD,
2922 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
2923 struct sctp_stream_queue_pending *sp, int so_locked
2924 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2929 struct mbuf *m_notify;
2930 struct sctp_send_failed *ssf;
2931 struct sctp_send_failed_event *ssfe;
2932 struct sctp_queued_to_read *control;
2935 if ((stcb == NULL) ||
2936 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2937 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2938 /* event not enabled */
2941 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2942 length = sizeof(struct sctp_send_failed_event);
2944 length = sizeof(struct sctp_send_failed);
2946 m_notify = sctp_get_mbuf_for_msg(length, 0, M_DONTWAIT, 1, MT_DATA);
2947 if (m_notify == NULL) {
2951 length += sp->length;
2952 SCTP_BUF_LEN(m_notify) = 0;
2953 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2954 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2955 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2956 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2957 ssfe->ssfe_length = length;
2958 ssfe->ssfe_error = error;
2959 /* not exactly what the user sent in, but should be close :) */
2960 bzero(&ssfe->ssfe_info, sizeof(ssfe->ssfe_info));
2961 ssfe->ssfe_info.snd_sid = sp->stream;
2962 if (sp->some_taken) {
2963 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
2965 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
2967 ssfe->ssfe_info.snd_ppid = sp->ppid;
2968 ssfe->ssfe_info.snd_context = sp->context;
2969 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2970 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2971 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2973 ssf = mtod(m_notify, struct sctp_send_failed *);
2974 ssf->ssf_type = SCTP_SEND_FAILED;
2975 ssf->ssf_flags = SCTP_DATA_UNSENT;
2976 ssf->ssf_length = length;
2977 ssf->ssf_error = error;
2978 /* not exactly what the user sent in, but should be close :) */
2979 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2980 ssf->ssf_info.sinfo_stream = sp->stream;
2981 ssf->ssf_info.sinfo_ssn = 0;
2982 if (sp->some_taken) {
2983 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
2985 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
2987 ssf->ssf_info.sinfo_ppid = sp->ppid;
2988 ssf->ssf_info.sinfo_context = sp->context;
2989 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2990 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2991 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2993 SCTP_BUF_NEXT(m_notify) = sp->data;
2995 /* Steal off the mbuf */
2998 * For this case, we check the actual socket buffer, since the assoc
2999 * is going away we don't want to overfill the socket buffer for a
3002 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3003 sctp_m_freem(m_notify);
3006 /* append to socket */
3007 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3008 0, 0, stcb->asoc.context, 0, 0, 0,
3010 if (control == NULL) {
3012 sctp_m_freem(m_notify);
3015 control->spec_flags = M_NOTIFICATION;
3016 sctp_add_to_readq(stcb->sctp_ep, stcb,
3018 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3024 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3026 struct mbuf *m_notify;
3027 struct sctp_adaptation_event *sai;
3028 struct sctp_queued_to_read *control;
3030 if ((stcb == NULL) ||
3031 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3032 /* event not enabled */
3035 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_DONTWAIT, 1, MT_DATA);
3036 if (m_notify == NULL)
3039 SCTP_BUF_LEN(m_notify) = 0;
3040 sai = mtod(m_notify, struct sctp_adaptation_event *);
3041 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3043 sai->sai_length = sizeof(struct sctp_adaptation_event);
3044 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3045 sai->sai_assoc_id = sctp_get_associd(stcb);
3047 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3048 SCTP_BUF_NEXT(m_notify) = NULL;
3050 /* append to socket */
3051 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3052 0, 0, stcb->asoc.context, 0, 0, 0,
3054 if (control == NULL) {
3056 sctp_m_freem(m_notify);
3059 control->length = SCTP_BUF_LEN(m_notify);
3060 control->spec_flags = M_NOTIFICATION;
3061 /* not that we need this */
3062 control->tail_mbuf = m_notify;
3063 sctp_add_to_readq(stcb->sctp_ep, stcb,
3065 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3068 /* This always must be called with the read-queue LOCKED in the INP */
3070 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3071 uint32_t val, int so_locked
3072 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3077 struct mbuf *m_notify;
3078 struct sctp_pdapi_event *pdapi;
3079 struct sctp_queued_to_read *control;
3082 if ((stcb == NULL) ||
3083 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3084 /* event not enabled */
3087 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3090 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_DONTWAIT, 1, MT_DATA);
3091 if (m_notify == NULL)
3094 SCTP_BUF_LEN(m_notify) = 0;
3095 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3096 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3097 pdapi->pdapi_flags = 0;
3098 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3099 pdapi->pdapi_indication = error;
3100 pdapi->pdapi_stream = (val >> 16);
3101 pdapi->pdapi_seq = (val & 0x0000ffff);
3102 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3104 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3105 SCTP_BUF_NEXT(m_notify) = NULL;
3106 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3107 0, 0, stcb->asoc.context, 0, 0, 0,
3109 if (control == NULL) {
3111 sctp_m_freem(m_notify);
3114 control->spec_flags = M_NOTIFICATION;
3115 control->length = SCTP_BUF_LEN(m_notify);
3116 /* not that we need this */
3117 control->tail_mbuf = m_notify;
3118 control->held_length = 0;
3119 control->length = 0;
3120 sb = &stcb->sctp_socket->so_rcv;
3121 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3122 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3124 sctp_sballoc(stcb, sb, m_notify);
3125 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3126 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3128 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3129 control->end_added = 1;
3130 if (stcb->asoc.control_pdapi)
3131 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3133 /* we really should not see this case */
3134 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3136 if (stcb->sctp_ep && stcb->sctp_socket) {
3137 /* This should always be the case */
3138 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3141 so = SCTP_INP_SO(stcb->sctp_ep);
3143 atomic_add_int(&stcb->asoc.refcnt, 1);
3144 SCTP_TCB_UNLOCK(stcb);
3145 SCTP_SOCKET_LOCK(so, 1);
3146 SCTP_TCB_LOCK(stcb);
3147 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3148 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3149 SCTP_SOCKET_UNLOCK(so, 1);
3154 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3155 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3157 SCTP_SOCKET_UNLOCK(so, 1);
3164 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3166 struct mbuf *m_notify;
3167 struct sctp_shutdown_event *sse;
3168 struct sctp_queued_to_read *control;
3171 * For TCP model AND UDP connected sockets we will send an error up
3172 * when an SHUTDOWN completes
3174 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3175 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3176 /* mark socket closed for read/write and wakeup! */
3177 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3180 so = SCTP_INP_SO(stcb->sctp_ep);
3181 atomic_add_int(&stcb->asoc.refcnt, 1);
3182 SCTP_TCB_UNLOCK(stcb);
3183 SCTP_SOCKET_LOCK(so, 1);
3184 SCTP_TCB_LOCK(stcb);
3185 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3186 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3187 SCTP_SOCKET_UNLOCK(so, 1);
3191 socantsendmore(stcb->sctp_socket);
3192 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3193 SCTP_SOCKET_UNLOCK(so, 1);
3196 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3197 /* event not enabled */
3200 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_DONTWAIT, 1, MT_DATA);
3201 if (m_notify == NULL)
3204 sse = mtod(m_notify, struct sctp_shutdown_event *);
3205 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3207 sse->sse_length = sizeof(struct sctp_shutdown_event);
3208 sse->sse_assoc_id = sctp_get_associd(stcb);
3210 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3211 SCTP_BUF_NEXT(m_notify) = NULL;
3213 /* append to socket */
3214 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3215 0, 0, stcb->asoc.context, 0, 0, 0,
3217 if (control == NULL) {
3219 sctp_m_freem(m_notify);
3222 control->spec_flags = M_NOTIFICATION;
3223 control->length = SCTP_BUF_LEN(m_notify);
3224 /* not that we need this */
3225 control->tail_mbuf = m_notify;
3226 sctp_add_to_readq(stcb->sctp_ep, stcb,
3228 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3232 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3234 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3239 struct mbuf *m_notify;
3240 struct sctp_sender_dry_event *event;
3241 struct sctp_queued_to_read *control;
3243 if ((stcb == NULL) ||
3244 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3245 /* event not enabled */
3248 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_DONTWAIT, 1, MT_DATA);
3249 if (m_notify == NULL) {
3253 SCTP_BUF_LEN(m_notify) = 0;
3254 event = mtod(m_notify, struct sctp_sender_dry_event *);
3255 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3256 event->sender_dry_flags = 0;
3257 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3258 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3260 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3261 SCTP_BUF_NEXT(m_notify) = NULL;
3263 /* append to socket */
3264 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3265 0, 0, stcb->asoc.context, 0, 0, 0,
3267 if (control == NULL) {
3269 sctp_m_freem(m_notify);
3272 control->length = SCTP_BUF_LEN(m_notify);
3273 control->spec_flags = M_NOTIFICATION;
3274 /* not that we need this */
3275 control->tail_mbuf = m_notify;
3276 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3277 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3282 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3284 struct mbuf *m_notify;
3285 struct sctp_queued_to_read *control;
3286 struct sctp_stream_change_event *stradd;
3289 if ((stcb == NULL) ||
3290 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3291 /* event not enabled */
3294 if ((stcb->asoc.peer_req_out) && flag) {
3295 /* Peer made the request, don't tell the local user */
3296 stcb->asoc.peer_req_out = 0;
3299 stcb->asoc.peer_req_out = 0;
3300 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA);
3301 if (m_notify == NULL)
3304 SCTP_BUF_LEN(m_notify) = 0;
3305 len = sizeof(struct sctp_stream_change_event);
3306 if (len > M_TRAILINGSPACE(m_notify)) {
3307 /* never enough room */
3308 sctp_m_freem(m_notify);
3311 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3312 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3313 stradd->strchange_flags = flag;
3314 stradd->strchange_length = len;
3315 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3316 stradd->strchange_instrms = numberin;
3317 stradd->strchange_outstrms = numberout;
3318 SCTP_BUF_LEN(m_notify) = len;
3319 SCTP_BUF_NEXT(m_notify) = NULL;
3320 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3322 sctp_m_freem(m_notify);
3325 /* append to socket */
3326 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3327 0, 0, stcb->asoc.context, 0, 0, 0,
3329 if (control == NULL) {
3331 sctp_m_freem(m_notify);
3334 control->spec_flags = M_NOTIFICATION;
3335 control->length = SCTP_BUF_LEN(m_notify);
3336 /* not that we need this */
3337 control->tail_mbuf = m_notify;
3338 sctp_add_to_readq(stcb->sctp_ep, stcb,
3340 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3344 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3346 struct mbuf *m_notify;
3347 struct sctp_queued_to_read *control;
3348 struct sctp_assoc_reset_event *strasoc;
3351 if ((stcb == NULL) ||
3352 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3353 /* event not enabled */
3356 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA);
3357 if (m_notify == NULL)
3360 SCTP_BUF_LEN(m_notify) = 0;
3361 len = sizeof(struct sctp_assoc_reset_event);
3362 if (len > M_TRAILINGSPACE(m_notify)) {
3363 /* never enough room */
3364 sctp_m_freem(m_notify);
3367 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3368 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3369 strasoc->assocreset_flags = flag;
3370 strasoc->assocreset_length = len;
3371 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3372 strasoc->assocreset_local_tsn = sending_tsn;
3373 strasoc->assocreset_remote_tsn = recv_tsn;
3374 SCTP_BUF_LEN(m_notify) = len;
3375 SCTP_BUF_NEXT(m_notify) = NULL;
3376 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3378 sctp_m_freem(m_notify);
3381 /* append to socket */
3382 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3383 0, 0, stcb->asoc.context, 0, 0, 0,
3385 if (control == NULL) {
3387 sctp_m_freem(m_notify);
3390 control->spec_flags = M_NOTIFICATION;
3391 control->length = SCTP_BUF_LEN(m_notify);
3392 /* not that we need this */
3393 control->tail_mbuf = m_notify;
3394 sctp_add_to_readq(stcb->sctp_ep, stcb,
3396 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3402 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3403 int number_entries, uint16_t * list, int flag)
3405 struct mbuf *m_notify;
3406 struct sctp_queued_to_read *control;
3407 struct sctp_stream_reset_event *strreset;
3410 if ((stcb == NULL) ||
3411 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3412 /* event not enabled */
3415 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA);
3416 if (m_notify == NULL)
3419 SCTP_BUF_LEN(m_notify) = 0;
3420 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3421 if (len > M_TRAILINGSPACE(m_notify)) {
3422 /* never enough room */
3423 sctp_m_freem(m_notify);
3426 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3427 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3428 strreset->strreset_flags = flag;
3429 strreset->strreset_length = len;
3430 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3431 if (number_entries) {
3434 for (i = 0; i < number_entries; i++) {
3435 strreset->strreset_stream_list[i] = ntohs(list[i]);
3438 SCTP_BUF_LEN(m_notify) = len;
3439 SCTP_BUF_NEXT(m_notify) = NULL;
3440 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3442 sctp_m_freem(m_notify);
3445 /* append to socket */
3446 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3447 0, 0, stcb->asoc.context, 0, 0, 0,
3449 if (control == NULL) {
3451 sctp_m_freem(m_notify);
3454 control->spec_flags = M_NOTIFICATION;
3455 control->length = SCTP_BUF_LEN(m_notify);
3456 /* not that we need this */
3457 control->tail_mbuf = m_notify;
3458 sctp_add_to_readq(stcb->sctp_ep, stcb,
3460 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3465 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3467 struct mbuf *m_notify;
3468 struct sctp_remote_error *sre;
3469 struct sctp_queued_to_read *control;
3470 size_t notif_len, chunk_len;
3472 if ((stcb == NULL) ||
3473 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3476 if (chunk != NULL) {
3477 chunk_len = ntohs(chunk->ch.chunk_length);
3481 notif_len = sizeof(struct sctp_remote_error) + chunk_len;
3482 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_DONTWAIT, 1, MT_DATA);
3483 if (m_notify == NULL) {
3484 /* Retry with smaller value. */
3485 notif_len = sizeof(struct sctp_remote_error);
3486 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_DONTWAIT, 1, MT_DATA);
3487 if (m_notify == NULL) {
3491 SCTP_BUF_NEXT(m_notify) = NULL;
3492 sre = mtod(m_notify, struct sctp_remote_error *);
3493 sre->sre_type = SCTP_REMOTE_ERROR;
3495 sre->sre_length = sizeof(struct sctp_remote_error);
3496 sre->sre_error = error;
3497 sre->sre_assoc_id = sctp_get_associd(stcb);
3498 if (notif_len > sizeof(struct sctp_remote_error)) {
3499 memcpy(sre->sre_data, chunk, chunk_len);
3500 sre->sre_length += chunk_len;
3502 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3503 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3504 0, 0, stcb->asoc.context, 0, 0, 0,
3506 if (control != NULL) {
3507 control->length = SCTP_BUF_LEN(m_notify);
3508 /* not that we need this */
3509 control->tail_mbuf = m_notify;
3510 control->spec_flags = M_NOTIFICATION;
3511 sctp_add_to_readq(stcb->sctp_ep, stcb,
3513 &stcb->sctp_socket->so_rcv, 1,
3514 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3516 sctp_m_freem(m_notify);
3522 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3523 uint32_t error, void *data, int so_locked
3524 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3529 if ((stcb == NULL) ||
3530 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3531 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3532 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3533 /* If the socket is gone we are out of here */
3536 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3539 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3540 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3541 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3542 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3543 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3544 /* Don't report these in front states */
3548 switch (notification) {
3549 case SCTP_NOTIFY_ASSOC_UP:
3550 if (stcb->asoc.assoc_up_sent == 0) {
3551 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3552 stcb->asoc.assoc_up_sent = 1;
3554 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3555 sctp_notify_adaptation_layer(stcb);
3557 if (stcb->asoc.peer_supports_auth == 0) {
3558 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3562 case SCTP_NOTIFY_ASSOC_DOWN:
3563 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3565 case SCTP_NOTIFY_INTERFACE_DOWN:
3567 struct sctp_nets *net;
3569 net = (struct sctp_nets *)data;
3570 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3571 (struct sockaddr *)&net->ro._l_addr, error);
3574 case SCTP_NOTIFY_INTERFACE_UP:
3576 struct sctp_nets *net;
3578 net = (struct sctp_nets *)data;
3579 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3580 (struct sockaddr *)&net->ro._l_addr, error);
3583 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3585 struct sctp_nets *net;
3587 net = (struct sctp_nets *)data;
3588 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3589 (struct sockaddr *)&net->ro._l_addr, error);
3592 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3593 sctp_notify_send_failed2(stcb, error,
3594 (struct sctp_stream_queue_pending *)data, so_locked);
3596 case SCTP_NOTIFY_SENT_DG_FAIL:
3597 sctp_notify_send_failed(stcb, 1, error,
3598 (struct sctp_tmit_chunk *)data, so_locked);
3600 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3601 sctp_notify_send_failed(stcb, 0, error,
3602 (struct sctp_tmit_chunk *)data, so_locked);
3604 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3608 val = *((uint32_t *) data);
3610 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3613 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3614 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3615 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3616 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3618 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3621 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3622 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3623 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3624 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3626 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3629 case SCTP_NOTIFY_ASSOC_RESTART:
3630 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3631 if (stcb->asoc.peer_supports_auth == 0) {
3632 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3636 case SCTP_NOTIFY_STR_RESET_SEND:
3637 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN);
3639 case SCTP_NOTIFY_STR_RESET_RECV:
3640 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING);
3642 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3643 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3644 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3646 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3647 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3648 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3650 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3651 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3652 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3654 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3655 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3656 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3658 case SCTP_NOTIFY_ASCONF_ADD_IP:
3659 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3662 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3663 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3666 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3667 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3670 case SCTP_NOTIFY_PEER_SHUTDOWN:
3671 sctp_notify_shutdown_event(stcb);
3673 case SCTP_NOTIFY_AUTH_NEW_KEY:
3674 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3675 (uint16_t) (uintptr_t) data,
3678 case SCTP_NOTIFY_AUTH_FREE_KEY:
3679 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3680 (uint16_t) (uintptr_t) data,
3683 case SCTP_NOTIFY_NO_PEER_AUTH:
3684 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3685 (uint16_t) (uintptr_t) data,
3688 case SCTP_NOTIFY_SENDER_DRY:
3689 sctp_notify_sender_dry_event(stcb, so_locked);
3691 case SCTP_NOTIFY_REMOTE_ERROR:
3692 sctp_notify_remote_error(stcb, error, data);
3695 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3696 __FUNCTION__, notification, notification);
3702 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3703 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3708 struct sctp_association *asoc;
3709 struct sctp_stream_out *outs;
3710 struct sctp_tmit_chunk *chk, *nchk;
3711 struct sctp_stream_queue_pending *sp, *nsp;
3718 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3719 /* already being freed */
3722 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3723 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3724 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3727 /* now through all the gunk freeing chunks */
3728 if (holds_lock == 0) {
3729 SCTP_TCB_SEND_LOCK(stcb);
3731 /* sent queue SHOULD be empty */
3732 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3733 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3734 asoc->sent_queue_cnt--;
3735 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3736 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3737 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3740 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3744 if (chk->data != NULL) {
3745 sctp_free_bufspace(stcb, asoc, chk, 1);
3746 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3747 error, chk, so_locked);
3749 sctp_m_freem(chk->data);
3753 sctp_free_a_chunk(stcb, chk, so_locked);
3754 /* sa_ignore FREED_MEMORY */
3756 /* pending send queue SHOULD be empty */
3757 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3758 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3759 asoc->send_queue_cnt--;
3760 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3761 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3764 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3767 if (chk->data != NULL) {
3768 sctp_free_bufspace(stcb, asoc, chk, 1);
3769 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3770 error, chk, so_locked);
3772 sctp_m_freem(chk->data);
3776 sctp_free_a_chunk(stcb, chk, so_locked);
3777 /* sa_ignore FREED_MEMORY */
3779 for (i = 0; i < asoc->streamoutcnt; i++) {
3780 /* For each stream */
3781 outs = &asoc->strmout[i];
3782 /* clean up any sends there */
3783 asoc->locked_on_sending = NULL;
3784 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3785 asoc->stream_queue_cnt--;
3786 TAILQ_REMOVE(&outs->outqueue, sp, next);
3787 sctp_free_spbufspace(stcb, asoc, sp);
3789 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3790 error, (void *)sp, so_locked);
3792 sctp_m_freem(sp->data);
3794 sp->tail_mbuf = NULL;
3799 sctp_free_remote_addr(sp->net);
3802 /* Free the chunk */
3803 sctp_free_a_strmoq(stcb, sp, so_locked);
3804 /* sa_ignore FREED_MEMORY */
3808 if (holds_lock == 0) {
3809 SCTP_TCB_SEND_UNLOCK(stcb);
3814 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3815 struct sctp_abort_chunk *abort, int so_locked
3816 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3824 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3825 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3826 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3827 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3829 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3830 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3831 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3834 /* Tell them we lost the asoc */
3835 sctp_report_all_outbound(stcb, error, 1, so_locked);
3837 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3839 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3844 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3845 struct mbuf *m, int iphlen,
3846 struct sockaddr *src, struct sockaddr *dst,
3847 struct sctphdr *sh, struct mbuf *op_err,
3848 uint8_t use_mflowid, uint32_t mflowid,
3849 uint32_t vrf_id, uint16_t port)
3853 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3860 /* We have a TCB to abort, send notification too */
3861 vtag = stcb->asoc.peer_vtag;
3862 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3863 /* get the assoc vrf id and table id */
3864 vrf_id = stcb->asoc.vrf_id;
3865 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3867 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3868 use_mflowid, mflowid,
3871 /* Ok, now lets free it */
3872 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3873 so = SCTP_INP_SO(inp);
3874 atomic_add_int(&stcb->asoc.refcnt, 1);
3875 SCTP_TCB_UNLOCK(stcb);
3876 SCTP_SOCKET_LOCK(so, 1);
3877 SCTP_TCB_LOCK(stcb);
3878 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3880 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3881 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3882 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3883 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3885 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
3886 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3887 SCTP_SOCKET_UNLOCK(so, 1);
3892 #ifdef SCTP_ASOCLOG_OF_TSNS
3894 sctp_print_out_track_log(struct sctp_tcb *stcb)
3899 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
3900 SCTP_PRINTF("IN bound TSN log-aaa\n");
3901 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
3902 SCTP_PRINTF("None rcvd\n");
3905 if (stcb->asoc.tsn_in_wrapped) {
3906 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
3907 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3908 stcb->asoc.in_tsnlog[i].tsn,
3909 stcb->asoc.in_tsnlog[i].strm,
3910 stcb->asoc.in_tsnlog[i].seq,
3911 stcb->asoc.in_tsnlog[i].flgs,
3912 stcb->asoc.in_tsnlog[i].sz);
3915 if (stcb->asoc.tsn_in_at) {
3916 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
3917 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3918 stcb->asoc.in_tsnlog[i].tsn,
3919 stcb->asoc.in_tsnlog[i].strm,
3920 stcb->asoc.in_tsnlog[i].seq,
3921 stcb->asoc.in_tsnlog[i].flgs,
3922 stcb->asoc.in_tsnlog[i].sz);
3926 SCTP_PRINTF("OUT bound TSN log-aaa\n");
3927 if ((stcb->asoc.tsn_out_at == 0) &&
3928 (stcb->asoc.tsn_out_wrapped == 0)) {
3929 SCTP_PRINTF("None sent\n");
3931 if (stcb->asoc.tsn_out_wrapped) {
3932 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
3933 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3934 stcb->asoc.out_tsnlog[i].tsn,
3935 stcb->asoc.out_tsnlog[i].strm,
3936 stcb->asoc.out_tsnlog[i].seq,
3937 stcb->asoc.out_tsnlog[i].flgs,
3938 stcb->asoc.out_tsnlog[i].sz);
3941 if (stcb->asoc.tsn_out_at) {
3942 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
3943 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3944 stcb->asoc.out_tsnlog[i].tsn,
3945 stcb->asoc.out_tsnlog[i].strm,
3946 stcb->asoc.out_tsnlog[i].seq,
3947 stcb->asoc.out_tsnlog[i].flgs,
3948 stcb->asoc.out_tsnlog[i].sz);
3957 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3958 struct mbuf *op_err,
3960 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3965 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3970 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3971 so = SCTP_INP_SO(inp);
3974 /* Got to have a TCB */
3975 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3976 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
3977 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
3978 SCTP_CALLED_DIRECTLY_NOCMPSET);
3983 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3985 /* notify the ulp */
3986 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
3987 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
3989 /* notify the peer */
3990 sctp_send_abort_tcb(stcb, op_err, so_locked);
3991 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3992 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3993 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3994 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3996 /* now free the asoc */
3997 #ifdef SCTP_ASOCLOG_OF_TSNS
3998 sctp_print_out_track_log(stcb);
4000 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4002 atomic_add_int(&stcb->asoc.refcnt, 1);
4003 SCTP_TCB_UNLOCK(stcb);
4004 SCTP_SOCKET_LOCK(so, 1);
4005 SCTP_TCB_LOCK(stcb);
4006 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4009 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4010 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4012 SCTP_SOCKET_UNLOCK(so, 1);
4018 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4019 struct sockaddr *src, struct sockaddr *dst,
4020 struct sctphdr *sh, struct sctp_inpcb *inp,
4022 uint8_t use_mflowid, uint32_t mflowid,
4023 uint32_t vrf_id, uint16_t port)
4025 struct sctp_chunkhdr *ch, chunk_buf;
4026 unsigned int chk_length;
4027 int contains_init_chunk;
4029 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4030 /* Generate a TO address for future reference */
4031 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4032 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4033 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4034 SCTP_CALLED_DIRECTLY_NOCMPSET);
4037 contains_init_chunk = 0;
4038 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4039 sizeof(*ch), (uint8_t *) & chunk_buf);
4040 while (ch != NULL) {
4041 chk_length = ntohs(ch->chunk_length);
4042 if (chk_length < sizeof(*ch)) {
4043 /* break to abort land */
4046 switch (ch->chunk_type) {
4048 contains_init_chunk = 1;
4050 case SCTP_PACKET_DROPPED:
4051 /* we don't respond to pkt-dropped */
4053 case SCTP_ABORT_ASSOCIATION:
4054 /* we don't respond with an ABORT to an ABORT */
4056 case SCTP_SHUTDOWN_COMPLETE:
4058 * we ignore it since we are not waiting for it and
4062 case SCTP_SHUTDOWN_ACK:
4063 sctp_send_shutdown_complete2(src, dst, sh,
4064 use_mflowid, mflowid,
4070 offset += SCTP_SIZE32(chk_length);
4071 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4072 sizeof(*ch), (uint8_t *) & chunk_buf);
4074 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4075 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4076 (contains_init_chunk == 0))) {
4077 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4078 use_mflowid, mflowid,
4084 * check the inbound datagram to make sure there is not an abort inside it,
4085 * if there is return 1, else return 0.
4088 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
4090 struct sctp_chunkhdr *ch;
4091 struct sctp_init_chunk *init_chk, chunk_buf;
4093 unsigned int chk_length;
4095 offset = iphlen + sizeof(struct sctphdr);
4096 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4097 (uint8_t *) & chunk_buf);
4098 while (ch != NULL) {
4099 chk_length = ntohs(ch->chunk_length);
4100 if (chk_length < sizeof(*ch)) {
4101 /* packet is probably corrupt */
4104 /* we seem to be ok, is it an abort? */
4105 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4106 /* yep, tell them */
4109 if (ch->chunk_type == SCTP_INITIATION) {
4110 /* need to update the Vtag */
4111 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4112 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
4113 if (init_chk != NULL) {
4114 *vtagfill = ntohl(init_chk->init.initiate_tag);
4117 /* Nope, move to the next chunk */
4118 offset += SCTP_SIZE32(chk_length);
4119 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4120 sizeof(*ch), (uint8_t *) & chunk_buf);
4126 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4127 * set (i.e. it's 0) so, create this function to compare link local scopes
4131 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4133 struct sockaddr_in6 a, b;
4139 if (a.sin6_scope_id == 0)
4140 if (sa6_recoverscope(&a)) {
4141 /* can't get scope, so can't match */
4144 if (b.sin6_scope_id == 0)
4145 if (sa6_recoverscope(&b)) {
4146 /* can't get scope, so can't match */
4149 if (a.sin6_scope_id != b.sin6_scope_id)
4156 * returns a sockaddr_in6 with embedded scope recovered and removed
4158 struct sockaddr_in6 *
4159 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4161 /* check and strip embedded scope junk */
4162 if (addr->sin6_family == AF_INET6) {
4163 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4164 if (addr->sin6_scope_id == 0) {
4166 if (!sa6_recoverscope(store)) {
4167 /* use the recovered scope */
4171 /* else, return the original "to" addr */
4172 in6_clearscope(&addr->sin6_addr);
4182 * are the two addresses the same? currently a "scopeless" check returns: 1
4186 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4190 if (sa1 == NULL || sa2 == NULL)
4193 /* must be the same family */
4194 if (sa1->sa_family != sa2->sa_family)
4197 switch (sa1->sa_family) {
4201 /* IPv6 addresses */
4202 struct sockaddr_in6 *sin6_1, *sin6_2;
4204 sin6_1 = (struct sockaddr_in6 *)sa1;
4205 sin6_2 = (struct sockaddr_in6 *)sa2;
4206 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4213 /* IPv4 addresses */
4214 struct sockaddr_in *sin_1, *sin_2;
4216 sin_1 = (struct sockaddr_in *)sa1;
4217 sin_2 = (struct sockaddr_in *)sa2;
4218 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4222 /* we don't do these... */
4228 sctp_print_address(struct sockaddr *sa)
4231 char ip6buf[INET6_ADDRSTRLEN];
4235 switch (sa->sa_family) {
4239 struct sockaddr_in6 *sin6;
4241 sin6 = (struct sockaddr_in6 *)sa;
4242 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4243 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4244 ntohs(sin6->sin6_port),
4245 sin6->sin6_scope_id);
4252 struct sockaddr_in *sin;
4255 sin = (struct sockaddr_in *)sa;
4256 p = (unsigned char *)&sin->sin_addr;
4257 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4258 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4269 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4270 struct sctp_inpcb *new_inp,
4271 struct sctp_tcb *stcb,
4275 * go through our old INP and pull off any control structures that
4276 * belong to stcb and move then to the new inp.
4278 struct socket *old_so, *new_so;
4279 struct sctp_queued_to_read *control, *nctl;
4280 struct sctp_readhead tmp_queue;
4284 old_so = old_inp->sctp_socket;
4285 new_so = new_inp->sctp_socket;
4286 TAILQ_INIT(&tmp_queue);
4287 error = sblock(&old_so->so_rcv, waitflags);
4290 * Gak, can't get sblock, we have a problem. data will be
4291 * left stranded.. and we don't dare look at it since the
4292 * other thread may be reading something. Oh well, its a
4293 * screwed up app that does a peeloff OR a accept while
4294 * reading from the main socket... actually its only the
4295 * peeloff() case, since I think read will fail on a
4296 * listening socket..
4300 /* lock the socket buffers */
4301 SCTP_INP_READ_LOCK(old_inp);
4302 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4303 /* Pull off all for out target stcb */
4304 if (control->stcb == stcb) {
4305 /* remove it we want it */
4306 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4307 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4310 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4311 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4313 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4314 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4315 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4317 m = SCTP_BUF_NEXT(m);
4321 SCTP_INP_READ_UNLOCK(old_inp);
4322 /* Remove the sb-lock on the old socket */
4324 sbunlock(&old_so->so_rcv);
4325 /* Now we move them over to the new socket buffer */
4326 SCTP_INP_READ_LOCK(new_inp);
4327 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4328 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4331 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4332 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4334 sctp_sballoc(stcb, &new_so->so_rcv, m);
4335 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4336 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4338 m = SCTP_BUF_NEXT(m);
4341 SCTP_INP_READ_UNLOCK(new_inp);
4345 sctp_add_to_readq(struct sctp_inpcb *inp,
4346 struct sctp_tcb *stcb,
4347 struct sctp_queued_to_read *control,
4350 int inp_read_lock_held,
4352 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4358 * Here we must place the control on the end of the socket read
4359 * queue AND increment sb_cc so that select will work properly on
4362 struct mbuf *m, *prev = NULL;
4367 panic("Gak, inp NULL on add_to_readq");
4371 if (inp_read_lock_held == 0)
4372 SCTP_INP_READ_LOCK(inp);
4373 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4374 sctp_free_remote_addr(control->whoFrom);
4375 if (control->data) {
4376 sctp_m_freem(control->data);
4377 control->data = NULL;
4379 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4380 if (inp_read_lock_held == 0)
4381 SCTP_INP_READ_UNLOCK(inp);
4384 if (!(control->spec_flags & M_NOTIFICATION)) {
4385 atomic_add_int(&inp->total_recvs, 1);
4386 if (!control->do_not_ref_stcb) {
4387 atomic_add_int(&stcb->total_recvs, 1);
4391 control->held_length = 0;
4392 control->length = 0;
4394 if (SCTP_BUF_LEN(m) == 0) {
4395 /* Skip mbufs with NO length */
4398 control->data = sctp_m_free(m);
4401 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4402 m = SCTP_BUF_NEXT(prev);
4405 control->tail_mbuf = prev;
4410 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4411 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4413 sctp_sballoc(stcb, sb, m);
4414 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4415 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4417 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4418 m = SCTP_BUF_NEXT(m);
4421 control->tail_mbuf = prev;
4423 /* Everything got collapsed out?? */
4424 sctp_free_remote_addr(control->whoFrom);
4425 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4426 if (inp_read_lock_held == 0)
4427 SCTP_INP_READ_UNLOCK(inp);
4431 control->end_added = 1;
4433 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4434 if (inp_read_lock_held == 0)
4435 SCTP_INP_READ_UNLOCK(inp);
4436 if (inp && inp->sctp_socket) {
4437 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4438 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4440 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4443 so = SCTP_INP_SO(inp);
4446 atomic_add_int(&stcb->asoc.refcnt, 1);
4447 SCTP_TCB_UNLOCK(stcb);
4449 SCTP_SOCKET_LOCK(so, 1);
4451 SCTP_TCB_LOCK(stcb);
4452 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4454 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4455 SCTP_SOCKET_UNLOCK(so, 1);
4460 sctp_sorwakeup(inp, inp->sctp_socket);
4461 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4463 SCTP_SOCKET_UNLOCK(so, 1);
4472 sctp_append_to_readq(struct sctp_inpcb *inp,
4473 struct sctp_tcb *stcb,
4474 struct sctp_queued_to_read *control,
4481 * A partial delivery API event is underway. OR we are appending on
4482 * the reassembly queue.
4484 * If PDAPI this means we need to add m to the end of the data.
4485 * Increase the length in the control AND increment the sb_cc.
4486 * Otherwise sb is NULL and all we need to do is put it at the end
4487 * of the mbuf chain.
4490 struct mbuf *mm, *tail = NULL, *prev = NULL;
4493 SCTP_INP_READ_LOCK(inp);
4495 if (control == NULL) {
4498 SCTP_INP_READ_UNLOCK(inp);
4502 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) {
4503 SCTP_INP_READ_UNLOCK(inp);
4506 if (control->end_added) {
4507 /* huh this one is complete? */
4515 if (SCTP_BUF_LEN(mm) == 0) {
4516 /* Skip mbufs with NO lenght */
4519 m = sctp_m_free(mm);
4522 SCTP_BUF_NEXT(prev) = sctp_m_free(mm);
4523 mm = SCTP_BUF_NEXT(prev);
4528 len += SCTP_BUF_LEN(mm);
4530 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4531 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm));
4533 sctp_sballoc(stcb, sb, mm);
4534 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4535 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4538 mm = SCTP_BUF_NEXT(mm);
4543 /* Really there should always be a prev */
4545 /* Huh nothing left? */
4547 panic("Nothing left to add?");
4554 if (control->tail_mbuf) {
4556 SCTP_BUF_NEXT(control->tail_mbuf) = m;
4557 control->tail_mbuf = tail;
4561 if (control->data != NULL) {
4562 panic("This should NOT happen");
4566 control->tail_mbuf = tail;
4568 atomic_add_int(&control->length, len);
4570 /* message is complete */
4571 if (stcb && (control == stcb->asoc.control_pdapi)) {
4572 stcb->asoc.control_pdapi = NULL;
4574 control->held_length = 0;
4575 control->end_added = 1;
4578 control->do_not_ref_stcb = 1;
4581 * When we are appending in partial delivery, the cum-ack is used
4582 * for the actual pd-api highest tsn on this mbuf. The true cum-ack
4583 * is populated in the outbound sinfo structure from the true cumack
4584 * if the association exists...
4586 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack;
4588 SCTP_INP_READ_UNLOCK(inp);
4590 if (inp && inp->sctp_socket) {
4591 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4592 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4594 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4597 so = SCTP_INP_SO(inp);
4599 atomic_add_int(&stcb->asoc.refcnt, 1);
4600 SCTP_TCB_UNLOCK(stcb);
4602 SCTP_SOCKET_LOCK(so, 1);
4604 SCTP_TCB_LOCK(stcb);
4605 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4607 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4608 SCTP_SOCKET_UNLOCK(so, 1);
4612 sctp_sorwakeup(inp, inp->sctp_socket);
4613 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4614 SCTP_SOCKET_UNLOCK(so, 1);
4623 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4624 *************ALTERNATE ROUTING CODE
4627 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4628 *************ALTERNATE ROUTING CODE
4632 sctp_generate_cause(uint16_t code, char *info)
4635 struct sctp_gen_error_cause *cause;
4636 size_t info_len, len;
4638 if ((code == 0) || (info == NULL)) {
4641 info_len = strlen(info);
4642 len = sizeof(struct sctp_paramhdr) + info_len;
4643 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4645 SCTP_BUF_LEN(m) = len;
4646 cause = mtod(m, struct sctp_gen_error_cause *);
4647 cause->code = htons(code);
4648 cause->length = htons((uint16_t) len);
4649 memcpy(cause->info, info, info_len);
4655 sctp_generate_no_user_data_cause(uint32_t tsn)
4658 struct sctp_error_no_user_data *no_user_data_cause;
4661 len = sizeof(struct sctp_error_no_user_data);
4662 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4664 SCTP_BUF_LEN(m) = len;
4665 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4666 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4667 no_user_data_cause->cause.length = htons((uint16_t) len);
4668 no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */
4673 #ifdef SCTP_MBCNT_LOGGING
4675 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4676 struct sctp_tmit_chunk *tp1, int chk_cnt)
4678 if (tp1->data == NULL) {
4681 asoc->chunks_on_out_queue -= chk_cnt;
4682 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4683 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4684 asoc->total_output_queue_size,
4689 if (asoc->total_output_queue_size >= tp1->book_size) {
4690 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4692 asoc->total_output_queue_size = 0;
4695 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4696 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4697 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4698 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4700 stcb->sctp_socket->so_snd.sb_cc = 0;
4709 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4710 uint8_t sent, int so_locked
4711 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4716 struct sctp_stream_out *strq;
4717 struct sctp_tmit_chunk *chk = NULL, *tp2;
4718 struct sctp_stream_queue_pending *sp;
4719 uint16_t stream = 0, seq = 0;
4720 uint8_t foundeom = 0;
4723 int do_wakeup_routine = 0;
4725 stream = tp1->rec.data.stream_number;
4726 seq = tp1->rec.data.stream_seq;
4728 ret_sz += tp1->book_size;
4729 if (tp1->data != NULL) {
4730 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4731 sctp_flight_size_decrease(tp1);
4732 sctp_total_flight_decrease(stcb, tp1);
4734 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4735 stcb->asoc.peers_rwnd += tp1->send_size;
4736 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4738 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4740 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4743 sctp_m_freem(tp1->data);
4746 do_wakeup_routine = 1;
4747 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4748 stcb->asoc.sent_queue_cnt_removeable--;
4751 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4752 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4753 SCTP_DATA_NOT_FRAG) {
4754 /* not frag'ed we ae done */
4757 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4758 /* end of frag, we are done */
4763 * Its a begin or middle piece, we must mark all of
4767 tp1 = TAILQ_NEXT(tp1, sctp_next);
4769 } while (tp1 && notdone);
4770 if (foundeom == 0) {
4772 * The multi-part message was scattered across the send and
4775 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4776 if ((tp1->rec.data.stream_number != stream) ||
4777 (tp1->rec.data.stream_seq != seq)) {
4781 * save to chk in case we have some on stream out
4782 * queue. If so and we have an un-transmitted one we
4783 * don't have to fudge the TSN.
4786 ret_sz += tp1->book_size;
4787 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4789 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4791 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4794 sctp_m_freem(tp1->data);
4797 /* No flight involved here book the size to 0 */
4799 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4802 do_wakeup_routine = 1;
4803 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4804 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4806 * on to the sent queue so we can wait for it to be
4809 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4811 stcb->asoc.send_queue_cnt--;
4812 stcb->asoc.sent_queue_cnt++;
4815 if (foundeom == 0) {
4817 * Still no eom found. That means there is stuff left on the
4818 * stream out queue.. yuck.
4820 SCTP_TCB_SEND_LOCK(stcb);
4821 strq = &stcb->asoc.strmout[stream];
4822 sp = TAILQ_FIRST(&strq->outqueue);
4824 sp->discard_rest = 1;
4826 * We may need to put a chunk on the queue that
4827 * holds the TSN that would have been sent with the
4831 /* Yep, we have to */
4832 sctp_alloc_a_chunk(stcb, chk);
4835 * we are hosed. All we can do is
4836 * nothing.. which will cause an
4837 * abort if the peer is paying
4842 memset(chk, 0, sizeof(*chk));
4843 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG;
4844 chk->sent = SCTP_FORWARD_TSN_SKIP;
4845 chk->asoc = &stcb->asoc;
4846 chk->rec.data.stream_seq = strq->next_sequence_send;
4847 chk->rec.data.stream_number = sp->stream;
4848 chk->rec.data.payloadtype = sp->ppid;
4849 chk->rec.data.context = sp->context;
4850 chk->flags = sp->act_flags;
4852 chk->whoTo = sp->net;
4854 chk->whoTo = stcb->asoc.primary_destination;
4855 atomic_add_int(&chk->whoTo->ref_count, 1);
4856 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4857 stcb->asoc.pr_sctp_cnt++;
4858 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4859 stcb->asoc.sent_queue_cnt++;
4860 stcb->asoc.pr_sctp_cnt++;
4862 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4864 strq->next_sequence_send++;
4868 * Pull any data to free up the SB and allow
4869 * sender to "add more" while we will throw
4872 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4873 ret_sz += sp->length;
4874 do_wakeup_routine = 1;
4876 sctp_m_freem(sp->data);
4878 sp->tail_mbuf = NULL;
4882 SCTP_TCB_SEND_UNLOCK(stcb);
4884 if (do_wakeup_routine) {
4885 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4888 so = SCTP_INP_SO(stcb->sctp_ep);
4890 atomic_add_int(&stcb->asoc.refcnt, 1);
4891 SCTP_TCB_UNLOCK(stcb);
4892 SCTP_SOCKET_LOCK(so, 1);
4893 SCTP_TCB_LOCK(stcb);
4894 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4895 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4896 /* assoc was freed while we were unlocked */
4897 SCTP_SOCKET_UNLOCK(so, 1);
4902 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4903 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4905 SCTP_SOCKET_UNLOCK(so, 1);
4913 * checks to see if the given address, sa, is one that is currently known by
4914 * the kernel note: can't distinguish the same address on multiple interfaces
4915 * and doesn't handle multiple addresses with different zone/scope id's note:
4916 * ifa_ifwithaddr() compares the entire sockaddr struct
4919 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4922 struct sctp_laddr *laddr;
4924 if (holds_lock == 0) {
4925 SCTP_INP_RLOCK(inp);
4927 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4928 if (laddr->ifa == NULL)
4930 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4933 if (addr->sa_family == AF_INET) {
4934 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4935 laddr->ifa->address.sin.sin_addr.s_addr) {
4937 if (holds_lock == 0) {
4938 SCTP_INP_RUNLOCK(inp);
4940 return (laddr->ifa);
4946 if (addr->sa_family == AF_INET6) {
4947 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4948 &laddr->ifa->address.sin6)) {
4950 if (holds_lock == 0) {
4951 SCTP_INP_RUNLOCK(inp);
4953 return (laddr->ifa);
4959 if (holds_lock == 0) {
4960 SCTP_INP_RUNLOCK(inp);
4966 sctp_get_ifa_hash_val(struct sockaddr *addr)
4968 switch (addr->sa_family) {
4972 struct sockaddr_in *sin;
4974 sin = (struct sockaddr_in *)addr;
4975 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
4981 struct sockaddr_in6 *sin6;
4982 uint32_t hash_of_addr;
4984 sin6 = (struct sockaddr_in6 *)addr;
4985 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
4986 sin6->sin6_addr.s6_addr32[1] +
4987 sin6->sin6_addr.s6_addr32[2] +
4988 sin6->sin6_addr.s6_addr32[3]);
4989 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
4990 return (hash_of_addr);
5000 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5002 struct sctp_ifa *sctp_ifap;
5003 struct sctp_vrf *vrf;
5004 struct sctp_ifalist *hash_head;
5005 uint32_t hash_of_addr;
5007 if (holds_lock == 0)
5008 SCTP_IPI_ADDR_RLOCK();
5010 vrf = sctp_find_vrf(vrf_id);
5013 if (holds_lock == 0)
5014 SCTP_IPI_ADDR_RUNLOCK();
5017 hash_of_addr = sctp_get_ifa_hash_val(addr);
5019 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5020 if (hash_head == NULL) {
5021 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5022 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
5023 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
5024 sctp_print_address(addr);
5025 SCTP_PRINTF("No such bucket for address\n");
5026 if (holds_lock == 0)
5027 SCTP_IPI_ADDR_RUNLOCK();
5031 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5032 if (sctp_ifap == NULL) {
5034 panic("Huh LIST_FOREACH corrupt");
5037 SCTP_PRINTF("LIST corrupt of sctp_ifap's?\n");
5041 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5044 if (addr->sa_family == AF_INET) {
5045 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5046 sctp_ifap->address.sin.sin_addr.s_addr) {
5048 if (holds_lock == 0)
5049 SCTP_IPI_ADDR_RUNLOCK();
5056 if (addr->sa_family == AF_INET6) {
5057 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5058 &sctp_ifap->address.sin6)) {
5060 if (holds_lock == 0)
5061 SCTP_IPI_ADDR_RUNLOCK();
5068 if (holds_lock == 0)
5069 SCTP_IPI_ADDR_RUNLOCK();
5074 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
5077 /* User pulled some data, do we need a rwnd update? */
5080 struct socket *so = NULL;
5085 atomic_add_int(&stcb->asoc.refcnt, 1);
5087 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5088 SCTP_STATE_SHUTDOWN_RECEIVED |
5089 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5090 /* Pre-check If we are freeing no update */
5093 SCTP_INP_INCR_REF(stcb->sctp_ep);
5094 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5095 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5098 so = stcb->sctp_socket;
5102 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5103 /* Have you have freed enough to look */
5105 /* Yep, its worth a look and the lock overhead */
5107 /* Figure out what the rwnd would be */
5108 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5109 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5110 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5114 if (dif >= rwnd_req) {
5116 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5119 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5121 * One last check before we allow the guy possibly
5122 * to get in. There is a race, where the guy has not
5123 * reached the gate. In that case
5127 SCTP_TCB_LOCK(stcb);
5128 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5129 /* No reports here */
5130 SCTP_TCB_UNLOCK(stcb);
5133 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5134 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5136 sctp_chunk_output(stcb->sctp_ep, stcb,
5137 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5138 /* make sure no timer is running */
5139 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5140 SCTP_TCB_UNLOCK(stcb);
5142 /* Update how much we have pending */
5143 stcb->freed_by_sorcv_sincelast = dif;
5146 if (so && r_unlocked && hold_rlock) {
5147 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5149 SCTP_INP_DECR_REF(stcb->sctp_ep);
5151 atomic_add_int(&stcb->asoc.refcnt, -1);
5156 sctp_sorecvmsg(struct socket *so,
5159 struct sockaddr *from,
5162 struct sctp_sndrcvinfo *sinfo,
5166 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5167 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5168 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5169 * On the way out we may send out any combination of:
5170 * MSG_NOTIFICATION MSG_EOR
5173 struct sctp_inpcb *inp = NULL;
5175 int cp_len = 0, error = 0;
5176 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5177 struct mbuf *m = NULL;
5178 struct sctp_tcb *stcb = NULL;
5179 int wakeup_read_socket = 0;
5180 int freecnt_applied = 0;
5181 int out_flags = 0, in_flags = 0;
5182 int block_allowed = 1;
5183 uint32_t freed_so_far = 0;
5184 uint32_t copied_so_far = 0;
5185 int in_eeor_mode = 0;
5186 int no_rcv_needed = 0;
5187 uint32_t rwnd_req = 0;
5188 int hold_sblock = 0;
5191 uint32_t held_length = 0;
5192 int sockbuf_lock = 0;
5195 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5199 in_flags = *msg_flags;
5200 if (in_flags & MSG_PEEK)
5201 SCTP_STAT_INCR(sctps_read_peeks);
5205 slen = uio->uio_resid;
5207 /* Pull in and set up our int flags */
5208 if (in_flags & MSG_OOB) {
5209 /* Out of band's NOT supported */
5210 return (EOPNOTSUPP);
5212 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5213 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5216 if ((in_flags & (MSG_DONTWAIT
5219 SCTP_SO_IS_NBIO(so)) {
5222 /* setup the endpoint */
5223 inp = (struct sctp_inpcb *)so->so_pcb;
5225 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5228 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5229 /* Must be at least a MTU's worth */
5230 if (rwnd_req < SCTP_MIN_RWND)
5231 rwnd_req = SCTP_MIN_RWND;
5232 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5233 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5234 sctp_misc_ints(SCTP_SORECV_ENTER,
5235 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid);
5237 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5238 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5239 rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid);
5241 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5243 goto release_unlocked;
5250 if (hold_sblock == 0) {
5251 SOCKBUF_LOCK(&so->so_rcv);
5254 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5255 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5258 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5260 error = so->so_error;
5261 if ((in_flags & MSG_PEEK) == 0)
5265 if (so->so_rcv.sb_cc == 0) {
5272 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
5273 /* we need to wait for data */
5274 if ((so->so_rcv.sb_cc == 0) &&
5275 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5276 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5277 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5279 * For active open side clear flags for
5280 * re-use passive open is blocked by
5283 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5285 * You were aborted, passive side
5288 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5291 so->so_state &= ~(SS_ISCONNECTING |
5292 SS_ISDISCONNECTING |
5296 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5297 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5304 error = sbwait(&so->so_rcv);
5309 goto restart_nosblocks;
5310 } else if (so->so_rcv.sb_cc == 0) {
5312 error = so->so_error;
5313 if ((in_flags & MSG_PEEK) == 0)
5316 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5317 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
5318 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5320 * For active open side clear flags
5321 * for re-use passive open is
5322 * blocked by connect.
5324 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5326 * You were aborted, passive
5327 * side always hits here
5329 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5332 so->so_state &= ~(SS_ISCONNECTING |
5333 SS_ISDISCONNECTING |
5337 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5338 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5345 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5346 error = EWOULDBLOCK;
5350 if (hold_sblock == 1) {
5351 SOCKBUF_UNLOCK(&so->so_rcv);
5354 /* we possibly have data we can read */
5355 /* sa_ignore FREED_MEMORY */
5356 control = TAILQ_FIRST(&inp->read_queue);
5357 if (control == NULL) {
5359 * This could be happening since the appender did the
5360 * increment but as not yet did the tailq insert onto the
5363 if (hold_rlock == 0) {
5364 SCTP_INP_READ_LOCK(inp);
5366 control = TAILQ_FIRST(&inp->read_queue);
5367 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5369 panic("Huh, its non zero and nothing on control?");
5371 so->so_rcv.sb_cc = 0;
5373 SCTP_INP_READ_UNLOCK(inp);
5377 if ((control->length == 0) &&
5378 (control->do_not_ref_stcb)) {
5380 * Clean up code for freeing assoc that left behind a
5381 * pdapi.. maybe a peer in EEOR that just closed after
5382 * sending and never indicated a EOR.
5384 if (hold_rlock == 0) {
5386 SCTP_INP_READ_LOCK(inp);
5388 control->held_length = 0;
5389 if (control->data) {
5390 /* Hmm there is data here .. fix */
5394 m_tmp = control->data;
5396 cnt += SCTP_BUF_LEN(m_tmp);
5397 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5398 control->tail_mbuf = m_tmp;
5399 control->end_added = 1;
5401 m_tmp = SCTP_BUF_NEXT(m_tmp);
5403 control->length = cnt;
5406 TAILQ_REMOVE(&inp->read_queue, control, next);
5407 /* Add back any hiddend data */
5408 sctp_free_remote_addr(control->whoFrom);
5409 sctp_free_a_readq(stcb, control);
5413 SCTP_INP_READ_UNLOCK(inp);
5417 if ((control->length == 0) &&
5418 (control->end_added == 1)) {
5420 * Do we also need to check for (control->pdapi_aborted ==
5423 if (hold_rlock == 0) {
5425 SCTP_INP_READ_LOCK(inp);
5427 TAILQ_REMOVE(&inp->read_queue, control, next);
5428 if (control->data) {
5430 panic("control->data not null but control->length == 0");
5432 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5433 sctp_m_freem(control->data);
5434 control->data = NULL;
5437 if (control->aux_data) {
5438 sctp_m_free(control->aux_data);
5439 control->aux_data = NULL;
5441 sctp_free_remote_addr(control->whoFrom);
5442 sctp_free_a_readq(stcb, control);
5445 SCTP_INP_READ_UNLOCK(inp);
5449 if (control->length == 0) {
5450 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5452 /* find a more suitable one then this */
5453 ctl = TAILQ_NEXT(control, next);
5455 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5457 (ctl->spec_flags & M_NOTIFICATION) ||
5458 ((ctl->do_not_ref_stcb == 0) &&
5459 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5462 * If we have a different TCB next, and there is data
5463 * present. If we have already taken some (pdapi), OR we can
5464 * ref the tcb and no delivery as started on this stream, we
5465 * take it. Note we allow a notification on a different
5466 * assoc to be delivered..
5470 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5472 ((ctl->some_taken) ||
5473 ((ctl->do_not_ref_stcb == 0) &&
5474 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5475 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5477 * If we have the same tcb, and there is data present, and we
5478 * have the strm interleave feature present. Then if we have
5479 * taken some (pdapi) or we can refer to tht tcb AND we have
5480 * not started a delivery for this stream, we can take it.
5481 * Note we do NOT allow a notificaiton on the same assoc to
5487 ctl = TAILQ_NEXT(ctl, next);
5491 * if we reach here, not suitable replacement is available
5492 * <or> fragment interleave is NOT on. So stuff the sb_cc
5493 * into the our held count, and its time to sleep again.
5495 held_length = so->so_rcv.sb_cc;
5496 control->held_length = so->so_rcv.sb_cc;
5499 /* Clear the held length since there is something to read */
5500 control->held_length = 0;
5502 SCTP_INP_READ_UNLOCK(inp);
5507 * If we reach here, control has a some data for us to read off.
5508 * Note that stcb COULD be NULL.
5510 control->some_taken++;
5512 SOCKBUF_UNLOCK(&so->so_rcv);
5515 stcb = control->stcb;
5517 if ((control->do_not_ref_stcb == 0) &&
5518 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5519 if (freecnt_applied == 0)
5521 } else if (control->do_not_ref_stcb == 0) {
5522 /* you can't free it on me please */
5524 * The lock on the socket buffer protects us so the
5525 * free code will stop. But since we used the
5526 * socketbuf lock and the sender uses the tcb_lock
5527 * to increment, we need to use the atomic add to
5530 if (freecnt_applied) {
5532 panic("refcnt already incremented");
5534 SCTP_PRINTF("refcnt already incremented?\n");
5537 atomic_add_int(&stcb->asoc.refcnt, 1);
5538 freecnt_applied = 1;
5541 * Setup to remember how much we have not yet told
5542 * the peer our rwnd has opened up. Note we grab the
5543 * value from the tcb from last time. Note too that
5544 * sack sending clears this when a sack is sent,
5545 * which is fine. Once we hit the rwnd_req, we then
5546 * will go to the sctp_user_rcvd() that will not
5547 * lock until it KNOWs it MUST send a WUP-SACK.
5549 freed_so_far = stcb->freed_by_sorcv_sincelast;
5550 stcb->freed_by_sorcv_sincelast = 0;
5554 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5555 control->do_not_ref_stcb == 0) {
5556 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5558 /* First lets get off the sinfo and sockaddr info */
5559 if ((sinfo) && filling_sinfo) {
5560 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo));
5561 nxt = TAILQ_NEXT(control, next);
5562 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5563 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5564 struct sctp_extrcvinfo *s_extra;
5566 s_extra = (struct sctp_extrcvinfo *)sinfo;
5569 s_extra->sreinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5570 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5571 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5573 if (nxt->spec_flags & M_NOTIFICATION) {
5574 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5576 s_extra->sreinfo_next_aid = nxt->sinfo_assoc_id;
5577 s_extra->sreinfo_next_length = nxt->length;
5578 s_extra->sreinfo_next_ppid = nxt->sinfo_ppid;
5579 s_extra->sreinfo_next_stream = nxt->sinfo_stream;
5580 if (nxt->tail_mbuf != NULL) {
5581 if (nxt->end_added) {
5582 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5587 * we explicitly 0 this, since the memcpy
5588 * got some other things beyond the older
5589 * sinfo_ that is on the control's structure
5593 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
5594 s_extra->sreinfo_next_aid = 0;
5595 s_extra->sreinfo_next_length = 0;
5596 s_extra->sreinfo_next_ppid = 0;
5597 s_extra->sreinfo_next_stream = 0;
5601 * update off the real current cum-ack, if we have an stcb.
5603 if ((control->do_not_ref_stcb == 0) && stcb)
5604 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5606 * mask off the high bits, we keep the actual chunk bits in
5609 sinfo->sinfo_flags &= 0x00ff;
5610 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5611 sinfo->sinfo_flags |= SCTP_UNORDERED;
5614 #ifdef SCTP_ASOCLOG_OF_TSNS
5616 int index, newindex;
5617 struct sctp_pcbtsn_rlog *entry;
5620 index = inp->readlog_index;
5621 newindex = index + 1;
5622 if (newindex >= SCTP_READ_LOG_SIZE) {
5625 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5626 entry = &inp->readlog[index];
5627 entry->vtag = control->sinfo_assoc_id;
5628 entry->strm = control->sinfo_stream;
5629 entry->seq = control->sinfo_ssn;
5630 entry->sz = control->length;
5631 entry->flgs = control->sinfo_flags;
5634 if (fromlen && from) {
5635 cp_len = min((size_t)fromlen, (size_t)control->whoFrom->ro._l_addr.sa.sa_len);
5636 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5639 ((struct sockaddr_in6 *)from)->sin6_port = control->port_from;
5644 ((struct sockaddr_in *)from)->sin_port = control->port_from;
5650 memcpy(from, &control->whoFrom->ro._l_addr, cp_len);
5652 #if defined(INET) && defined(INET6)
5653 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) &&
5654 (from->sa_family == AF_INET) &&
5655 ((size_t)fromlen >= sizeof(struct sockaddr_in6))) {
5656 struct sockaddr_in *sin;
5657 struct sockaddr_in6 sin6;
5659 sin = (struct sockaddr_in *)from;
5660 bzero(&sin6, sizeof(sin6));
5661 sin6.sin6_family = AF_INET6;
5662 sin6.sin6_len = sizeof(struct sockaddr_in6);
5663 sin6.sin6_addr.s6_addr32[2] = htonl(0xffff);
5664 bcopy(&sin->sin_addr,
5665 &sin6.sin6_addr.s6_addr32[3],
5666 sizeof(sin6.sin6_addr.s6_addr32[3]));
5667 sin6.sin6_port = sin->sin_port;
5668 memcpy(from, &sin6, sizeof(struct sockaddr_in6));
5673 struct sockaddr_in6 lsa6, *from6;
5675 from6 = (struct sockaddr_in6 *)from;
5676 sctp_recover_scope_mac(from6, (&lsa6));
5680 /* now copy out what data we can */
5682 /* copy out each mbuf in the chain up to length */
5686 /* Move out all we can */
5687 cp_len = (int)uio->uio_resid;
5688 my_len = (int)SCTP_BUF_LEN(m);
5689 if (cp_len > my_len) {
5690 /* not enough in this buf */
5694 SCTP_INP_READ_UNLOCK(inp);
5698 error = uiomove(mtod(m, char *), cp_len, uio);
5700 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5703 if ((control->do_not_ref_stcb == 0) && stcb &&
5704 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5708 /* error we are out of here */
5711 if ((SCTP_BUF_NEXT(m) == NULL) &&
5712 (cp_len >= SCTP_BUF_LEN(m)) &&
5713 ((control->end_added == 0) ||
5714 (control->end_added &&
5715 (TAILQ_NEXT(control, next) == NULL)))
5717 SCTP_INP_READ_LOCK(inp);
5720 if (cp_len == SCTP_BUF_LEN(m)) {
5721 if ((SCTP_BUF_NEXT(m) == NULL) &&
5722 (control->end_added)) {
5723 out_flags |= MSG_EOR;
5724 if ((control->do_not_ref_stcb == 0) &&
5725 (control->stcb != NULL) &&
5726 ((control->spec_flags & M_NOTIFICATION) == 0))
5727 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5729 if (control->spec_flags & M_NOTIFICATION) {
5730 out_flags |= MSG_NOTIFICATION;
5732 /* we ate up the mbuf */
5733 if (in_flags & MSG_PEEK) {
5735 m = SCTP_BUF_NEXT(m);
5736 copied_so_far += cp_len;
5738 /* dispose of the mbuf */
5739 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5740 sctp_sblog(&so->so_rcv,
5741 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5743 sctp_sbfree(control, stcb, &so->so_rcv, m);
5744 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5745 sctp_sblog(&so->so_rcv,
5746 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5748 copied_so_far += cp_len;
5749 freed_so_far += cp_len;
5750 freed_so_far += MSIZE;
5751 atomic_subtract_int(&control->length, cp_len);
5752 control->data = sctp_m_free(m);
5755 * been through it all, must hold sb
5756 * lock ok to null tail
5758 if (control->data == NULL) {
5760 if ((control->end_added == 0) ||
5761 (TAILQ_NEXT(control, next) == NULL)) {
5769 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5770 panic("Hmm we don't own the lock?");
5774 control->tail_mbuf = NULL;
5776 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5777 panic("end_added, nothing left and no MSG_EOR");
5783 /* Do we need to trim the mbuf? */
5784 if (control->spec_flags & M_NOTIFICATION) {
5785 out_flags |= MSG_NOTIFICATION;
5787 if ((in_flags & MSG_PEEK) == 0) {
5788 SCTP_BUF_RESV_UF(m, cp_len);
5789 SCTP_BUF_LEN(m) -= cp_len;
5790 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5791 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5793 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5794 if ((control->do_not_ref_stcb == 0) &&
5796 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5798 copied_so_far += cp_len;
5799 freed_so_far += cp_len;
5800 freed_so_far += MSIZE;
5801 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5802 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5803 SCTP_LOG_SBRESULT, 0);
5805 atomic_subtract_int(&control->length, cp_len);
5807 copied_so_far += cp_len;
5810 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5813 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5814 (control->do_not_ref_stcb == 0) &&
5815 (freed_so_far >= rwnd_req)) {
5816 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5818 } /* end while(m) */
5820 * At this point we have looked at it all and we either have
5821 * a MSG_EOR/or read all the user wants... <OR>
5822 * control->length == 0.
5824 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5825 /* we are done with this control */
5826 if (control->length == 0) {
5827 if (control->data) {
5829 panic("control->data not null at read eor?");
5831 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5832 sctp_m_freem(control->data);
5833 control->data = NULL;
5837 if (TAILQ_NEXT(control, next) == NULL) {
5839 * If we don't have a next we need a
5840 * lock, if there is a next
5841 * interrupt is filling ahead of us
5842 * and we don't need a lock to
5843 * remove this guy (which is the
5844 * head of the queue).
5846 if (hold_rlock == 0) {
5847 SCTP_INP_READ_LOCK(inp);
5851 TAILQ_REMOVE(&inp->read_queue, control, next);
5852 /* Add back any hiddend data */
5853 if (control->held_length) {
5855 control->held_length = 0;
5856 wakeup_read_socket = 1;
5858 if (control->aux_data) {
5859 sctp_m_free(control->aux_data);
5860 control->aux_data = NULL;
5862 no_rcv_needed = control->do_not_ref_stcb;
5863 sctp_free_remote_addr(control->whoFrom);
5864 control->data = NULL;
5865 sctp_free_a_readq(stcb, control);
5867 if ((freed_so_far >= rwnd_req) &&
5868 (no_rcv_needed == 0))
5869 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5873 * The user did not read all of this
5874 * message, turn off the returned MSG_EOR
5875 * since we are leaving more behind on the
5879 if (control->end_added &&
5880 (control->data == NULL) &&
5881 (control->tail_mbuf == NULL)) {
5882 panic("Gak, control->length is corrupt?");
5885 no_rcv_needed = control->do_not_ref_stcb;
5886 out_flags &= ~MSG_EOR;
5889 if (out_flags & MSG_EOR) {
5892 if ((uio->uio_resid == 0) ||
5894 (copied_so_far >= (uint32_t) max(so->so_rcv.sb_lowat, 1)))) {
5898 * If I hit here the receiver wants more and this message is
5899 * NOT done (pd-api). So two questions. Can we block? if not
5900 * we are done. Did the user NOT set MSG_WAITALL?
5902 if (block_allowed == 0) {
5906 * We need to wait for more data a few things: - We don't
5907 * sbunlock() so we don't get someone else reading. - We
5908 * must be sure to account for the case where what is added
5909 * is NOT to our control when we wakeup.
5913 * Do we need to tell the transport a rwnd update might be
5914 * needed before we go to sleep?
5916 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5917 ((freed_so_far >= rwnd_req) &&
5918 (control->do_not_ref_stcb == 0) &&
5919 (no_rcv_needed == 0))) {
5920 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5923 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5926 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5929 if (hold_rlock == 1) {
5930 SCTP_INP_READ_UNLOCK(inp);
5933 if (hold_sblock == 0) {
5934 SOCKBUF_LOCK(&so->so_rcv);
5937 if ((copied_so_far) && (control->length == 0) &&
5938 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5941 if (so->so_rcv.sb_cc <= control->held_length) {
5942 error = sbwait(&so->so_rcv);
5946 control->held_length = 0;
5949 SOCKBUF_UNLOCK(&so->so_rcv);
5952 if (control->length == 0) {
5953 /* still nothing here */
5954 if (control->end_added == 1) {
5955 /* he aborted, or is done i.e.did a shutdown */
5956 out_flags |= MSG_EOR;
5957 if (control->pdapi_aborted) {
5958 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5959 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5961 out_flags |= MSG_TRUNC;
5963 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5964 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5966 goto done_with_control;
5968 if (so->so_rcv.sb_cc > held_length) {
5969 control->held_length = so->so_rcv.sb_cc;
5972 goto wait_some_more;
5973 } else if (control->data == NULL) {
5975 * we must re-sync since data is probably being
5978 SCTP_INP_READ_LOCK(inp);
5979 if ((control->length > 0) && (control->data == NULL)) {
5981 * big trouble.. we have the lock and its
5985 panic("Impossible data==NULL length !=0");
5987 out_flags |= MSG_EOR;
5988 out_flags |= MSG_TRUNC;
5989 control->length = 0;
5990 SCTP_INP_READ_UNLOCK(inp);
5991 goto done_with_control;
5993 SCTP_INP_READ_UNLOCK(inp);
5994 /* We will fall around to get more data */
5999 * Give caller back the mbuf chain,
6000 * store in uio_resid the length
6002 wakeup_read_socket = 0;
6003 if ((control->end_added == 0) ||
6004 (TAILQ_NEXT(control, next) == NULL)) {
6005 /* Need to get rlock */
6006 if (hold_rlock == 0) {
6007 SCTP_INP_READ_LOCK(inp);
6011 if (control->end_added) {
6012 out_flags |= MSG_EOR;
6013 if ((control->do_not_ref_stcb == 0) &&
6014 (control->stcb != NULL) &&
6015 ((control->spec_flags & M_NOTIFICATION) == 0))
6016 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6018 if (control->spec_flags & M_NOTIFICATION) {
6019 out_flags |= MSG_NOTIFICATION;
6021 uio->uio_resid = control->length;
6022 *mp = control->data;
6025 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6026 sctp_sblog(&so->so_rcv,
6027 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6029 sctp_sbfree(control, stcb, &so->so_rcv, m);
6030 freed_so_far += SCTP_BUF_LEN(m);
6031 freed_so_far += MSIZE;
6032 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6033 sctp_sblog(&so->so_rcv,
6034 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6036 m = SCTP_BUF_NEXT(m);
6038 control->data = control->tail_mbuf = NULL;
6039 control->length = 0;
6040 if (out_flags & MSG_EOR) {
6041 /* Done with this control */
6042 goto done_with_control;
6046 if (hold_rlock == 1) {
6047 SCTP_INP_READ_UNLOCK(inp);
6050 if (hold_sblock == 1) {
6051 SOCKBUF_UNLOCK(&so->so_rcv);
6054 sbunlock(&so->so_rcv);
6059 SOCKBUF_UNLOCK(&so->so_rcv);
6062 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6063 if ((freed_so_far >= rwnd_req) &&
6064 (control && (control->do_not_ref_stcb == 0)) &&
6065 (no_rcv_needed == 0))
6066 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6070 *msg_flags = out_flags;
6072 if (((out_flags & MSG_EOR) == 0) &&
6073 ((in_flags & MSG_PEEK) == 0) &&
6075 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6076 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6077 struct sctp_extrcvinfo *s_extra;
6079 s_extra = (struct sctp_extrcvinfo *)sinfo;
6080 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
6082 if (hold_rlock == 1) {
6083 SCTP_INP_READ_UNLOCK(inp);
6086 SOCKBUF_UNLOCK(&so->so_rcv);
6089 sbunlock(&so->so_rcv);
6091 if (freecnt_applied) {
6093 * The lock on the socket buffer protects us so the free
6094 * code will stop. But since we used the socketbuf lock and
6095 * the sender uses the tcb_lock to increment, we need to use
6096 * the atomic add to the refcnt.
6100 panic("stcb for refcnt has gone NULL?");
6106 atomic_add_int(&stcb->asoc.refcnt, -1);
6107 /* Save the value back for next time */
6108 stcb->freed_by_sorcv_sincelast = freed_so_far;
6110 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6112 sctp_misc_ints(SCTP_SORECV_DONE,
6114 ((uio) ? (slen - uio->uio_resid) : slen),
6118 sctp_misc_ints(SCTP_SORECV_DONE,
6120 ((uio) ? (slen - uio->uio_resid) : slen),
6126 if (wakeup_read_socket) {
6127 sctp_sorwakeup(inp, so);
6133 #ifdef SCTP_MBUF_LOGGING
6135 sctp_m_free(struct mbuf *m)
6137 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6138 if (SCTP_BUF_IS_EXTENDED(m)) {
6139 sctp_log_mb(m, SCTP_MBUF_IFREE);
6146 sctp_m_freem(struct mbuf *mb)
6149 mb = sctp_m_free(mb);
6155 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6158 * Given a local address. For all associations that holds the
6159 * address, request a peer-set-primary.
6161 struct sctp_ifa *ifa;
6162 struct sctp_laddr *wi;
6164 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6166 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6167 return (EADDRNOTAVAIL);
6170 * Now that we have the ifa we must awaken the iterator with this
6173 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6175 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6178 /* Now incr the count and int wi structure */
6179 SCTP_INCR_LADDR_COUNT();
6180 bzero(wi, sizeof(*wi));
6181 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6183 wi->action = SCTP_SET_PRIM_ADDR;
6184 atomic_add_int(&ifa->refcount, 1);
6186 /* Now add it to the work queue */
6187 SCTP_WQ_ADDR_LOCK();
6189 * Should this really be a tailq? As it is we will process the
6192 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6193 SCTP_WQ_ADDR_UNLOCK();
6194 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6195 (struct sctp_inpcb *)NULL,
6196 (struct sctp_tcb *)NULL,
6197 (struct sctp_nets *)NULL);
6203 sctp_soreceive(struct socket *so,
6204 struct sockaddr **psa,
6207 struct mbuf **controlp,
6211 uint8_t sockbuf[256];
6212 struct sockaddr *from;
6213 struct sctp_extrcvinfo sinfo;
6214 int filling_sinfo = 1;
6215 struct sctp_inpcb *inp;
6217 inp = (struct sctp_inpcb *)so->so_pcb;
6218 /* pickup the assoc we are reading from */
6220 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6223 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6224 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6225 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6226 (controlp == NULL)) {
6227 /* user does not want the sndrcv ctl */
6231 from = (struct sockaddr *)sockbuf;
6232 fromlen = sizeof(sockbuf);
6239 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6240 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6241 if ((controlp) && (filling_sinfo)) {
6242 /* copy back the sinfo in a CMSG format */
6244 *controlp = sctp_build_ctl_nchunk(inp,
6245 (struct sctp_sndrcvinfo *)&sinfo);
6250 /* copy back the address info */
6251 if (from && from->sa_len) {
6252 *psa = sodupsockaddr(from, M_NOWAIT);
6265 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6266 int totaddr, int *error)
6270 struct sctp_inpcb *inp;
6271 struct sockaddr *sa;
6275 struct sockaddr_in *sin;
6279 struct sockaddr_in6 *sin6;
6284 inp = stcb->sctp_ep;
6286 for (i = 0; i < totaddr; i++) {
6287 switch (sa->sa_family) {
6290 incr = sizeof(struct sockaddr_in);
6291 sin = (struct sockaddr_in *)sa;
6292 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6293 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6294 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6295 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6296 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6300 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6301 /* assoc gone no un-lock */
6302 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6303 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6312 incr = sizeof(struct sockaddr_in6);
6313 sin6 = (struct sockaddr_in6 *)sa;
6314 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6315 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6316 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6317 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6321 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6322 /* assoc gone no un-lock */
6323 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6324 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6334 sa = (struct sockaddr *)((caddr_t)sa + incr);
6341 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6342 int *totaddr, int *num_v4, int *num_v6, int *error,
6343 int limit, int *bad_addr)
6345 struct sockaddr *sa;
6346 struct sctp_tcb *stcb = NULL;
6352 *error = *num_v6 = *num_v4 = 0;
6353 /* account and validate addresses */
6354 for (i = 0; i < (size_t)*totaddr; i++) {
6355 switch (sa->sa_family) {
6359 incr = sizeof(struct sockaddr_in);
6360 if (sa->sa_len != incr) {
6361 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6371 struct sockaddr_in6 *sin6;
6373 sin6 = (struct sockaddr_in6 *)sa;
6374 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6375 /* Must be non-mapped for connectx */
6376 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6382 incr = sizeof(struct sockaddr_in6);
6383 if (sa->sa_len != incr) {
6384 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6397 if (i == (size_t)*totaddr) {
6400 SCTP_INP_INCR_REF(inp);
6401 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6403 /* Already have or am bring up an association */
6406 SCTP_INP_DECR_REF(inp);
6408 if ((at + incr) > (size_t)limit) {
6412 sa = (struct sockaddr *)((caddr_t)sa + incr);
6414 return ((struct sctp_tcb *)NULL);
6418 * sctp_bindx(ADD) for one address.
6419 * assumes all arguments are valid/checked by caller.
6422 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6423 struct sockaddr *sa, sctp_assoc_t assoc_id,
6424 uint32_t vrf_id, int *error, void *p)
6426 struct sockaddr *addr_touse;
6429 struct sockaddr_in sin;
6433 /* see if we're bound all already! */
6434 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6435 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6441 if (sa->sa_family == AF_INET6) {
6442 struct sockaddr_in6 *sin6;
6444 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6445 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6449 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6450 /* can only bind v6 on PF_INET6 sockets */
6451 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6455 sin6 = (struct sockaddr_in6 *)addr_touse;
6456 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6457 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6458 SCTP_IPV6_V6ONLY(inp)) {
6459 /* can't bind v4-mapped on PF_INET sockets */
6460 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6464 in6_sin6_2_sin(&sin, sin6);
6465 addr_touse = (struct sockaddr *)&sin;
6470 if (sa->sa_family == AF_INET) {
6471 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6472 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6476 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6477 SCTP_IPV6_V6ONLY(inp)) {
6478 /* can't bind v4 on PF_INET sockets */
6479 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6485 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6487 /* Can't get proc for Net/Open BSD */
6488 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6492 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6496 * No locks required here since bind and mgmt_ep_sa all do their own
6497 * locking. If we do something for the FIX: below we may need to
6498 * lock in that case.
6500 if (assoc_id == 0) {
6501 /* add the address */
6502 struct sctp_inpcb *lep;
6503 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6505 /* validate the incoming port */
6506 if ((lsin->sin_port != 0) &&
6507 (lsin->sin_port != inp->sctp_lport)) {
6508 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6512 /* user specified 0 port, set it to existing port */
6513 lsin->sin_port = inp->sctp_lport;
6516 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6519 * We must decrement the refcount since we have the
6520 * ep already and are binding. No remove going on
6523 SCTP_INP_DECR_REF(lep);
6526 /* already bound to it.. ok */
6528 } else if (lep == NULL) {
6529 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6530 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6531 SCTP_ADD_IP_ADDRESS,
6534 *error = EADDRINUSE;
6540 * FIX: decide whether we allow assoc based bindx
6546 * sctp_bindx(DELETE) for one address.
6547 * assumes all arguments are valid/checked by caller.
6550 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6551 struct sockaddr *sa, sctp_assoc_t assoc_id,
6552 uint32_t vrf_id, int *error)
6554 struct sockaddr *addr_touse;
6557 struct sockaddr_in sin;
6561 /* see if we're bound all already! */
6562 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6563 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6569 if (sa->sa_family == AF_INET6) {
6570 struct sockaddr_in6 *sin6;
6572 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6573 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6577 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6578 /* can only bind v6 on PF_INET6 sockets */
6579 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6583 sin6 = (struct sockaddr_in6 *)addr_touse;
6584 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6585 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6586 SCTP_IPV6_V6ONLY(inp)) {
6587 /* can't bind mapped-v4 on PF_INET sockets */
6588 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6592 in6_sin6_2_sin(&sin, sin6);
6593 addr_touse = (struct sockaddr *)&sin;
6598 if (sa->sa_family == AF_INET) {
6599 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6600 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6604 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6605 SCTP_IPV6_V6ONLY(inp)) {
6606 /* can't bind v4 on PF_INET sockets */
6607 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6614 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6615 * below is ever changed we may need to lock before calling
6616 * association level binding.
6618 if (assoc_id == 0) {
6619 /* delete the address */
6620 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6621 SCTP_DEL_IP_ADDRESS,
6625 * FIX: decide whether we allow assoc based bindx
6631 * returns the valid local address count for an assoc, taking into account
6635 sctp_local_addr_count(struct sctp_tcb *stcb)
6640 int ipv4_local_scope, ipv4_addr_legal;
6644 int local_scope, site_scope, ipv6_addr_legal;
6647 struct sctp_vrf *vrf;
6648 struct sctp_ifn *sctp_ifn;
6649 struct sctp_ifa *sctp_ifa;
6652 /* Turn on all the appropriate scopes */
6653 loopback_scope = stcb->asoc.scope.loopback_scope;
6655 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6656 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6659 local_scope = stcb->asoc.scope.local_scope;
6660 site_scope = stcb->asoc.scope.site_scope;
6661 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6663 SCTP_IPI_ADDR_RLOCK();
6664 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6666 /* no vrf, no addresses */
6667 SCTP_IPI_ADDR_RUNLOCK();
6670 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6672 * bound all case: go through all ifns on the vrf
6674 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6675 if ((loopback_scope == 0) &&
6676 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6679 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6680 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6682 switch (sctp_ifa->address.sa.sa_family) {
6685 if (ipv4_addr_legal) {
6686 struct sockaddr_in *sin;
6688 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
6689 if (sin->sin_addr.s_addr == 0) {
6696 if ((ipv4_local_scope == 0) &&
6697 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6700 /* count this one */
6709 if (ipv6_addr_legal) {
6710 struct sockaddr_in6 *sin6;
6712 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
6713 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6716 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6717 if (local_scope == 0)
6719 if (sin6->sin6_scope_id == 0) {
6720 if (sa6_recoverscope(sin6) != 0)
6738 if ((site_scope == 0) &&
6739 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6742 /* count this one */
6757 struct sctp_laddr *laddr;
6759 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6761 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6764 /* count this one */
6768 SCTP_IPI_ADDR_RUNLOCK();
6772 #if defined(SCTP_LOCAL_TRACE_BUF)
6775 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)
6777 uint32_t saveindex, newindex;
6780 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6781 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6784 newindex = saveindex + 1;
6786 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6787 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6790 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6791 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6792 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6793 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6794 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6795 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6796 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6797 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6802 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *ignored)
6807 struct ip6_hdr *ip6;
6810 struct mbuf *sp, *last;
6811 struct udphdr *uhdr;
6814 if ((m->m_flags & M_PKTHDR) == 0) {
6815 /* Can't handle one that is not a pkt hdr */
6818 /* Pull the src port */
6819 iph = mtod(m, struct ip *);
6820 uhdr = (struct udphdr *)((caddr_t)iph + off);
6821 port = uhdr->uh_sport;
6823 * Split out the mbuf chain. Leave the IP header in m, place the
6826 sp = m_split(m, off, M_DONTWAIT);
6828 /* Gak, drop packet, we can't do a split */
6831 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6832 /* Gak, packet can't have an SCTP header in it - too small */
6836 /* Now pull up the UDP header and SCTP header together */
6837 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6839 /* Gak pullup failed */
6842 /* Trim out the UDP header */
6843 m_adj(sp, sizeof(struct udphdr));
6845 /* Now reconstruct the mbuf chain */
6846 for (last = m; last->m_next; last = last->m_next);
6848 m->m_pkthdr.len += sp->m_pkthdr.len;
6849 iph = mtod(m, struct ip *);
6850 switch (iph->ip_v) {
6853 iph->ip_len -= sizeof(struct udphdr);
6854 sctp_input_with_port(m, off, port);
6858 case IPV6_VERSION >> 4:
6859 ip6 = mtod(m, struct ip6_hdr *);
6860 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
6861 sctp6_input_with_port(&m, &off, port);
6874 sctp_over_udp_stop(void)
6877 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6881 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
6882 soclose(SCTP_BASE_INFO(udp4_tun_socket));
6883 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
6887 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
6888 soclose(SCTP_BASE_INFO(udp6_tun_socket));
6889 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
6895 sctp_over_udp_start(void)
6901 struct sockaddr_in sin;
6905 struct sockaddr_in6 sin6;
6909 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6912 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
6913 if (ntohs(port) == 0) {
6914 /* Must have a port set */
6918 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
6919 /* Already running -- must stop first */
6924 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
6925 /* Already running -- must stop first */
6930 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
6931 SOCK_DGRAM, IPPROTO_UDP,
6932 curthread->td_ucred, curthread))) {
6933 sctp_over_udp_stop();
6936 /* Call the special UDP hook. */
6937 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
6938 sctp_recv_udp_tunneled_packet))) {
6939 sctp_over_udp_stop();
6942 /* Ok, we have a socket, bind it to the port. */
6943 memset(&sin, 0, sizeof(struct sockaddr_in));
6944 sin.sin_len = sizeof(struct sockaddr_in);
6945 sin.sin_family = AF_INET;
6946 sin.sin_port = htons(port);
6947 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
6948 (struct sockaddr *)&sin, curthread))) {
6949 sctp_over_udp_stop();
6954 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
6955 SOCK_DGRAM, IPPROTO_UDP,
6956 curthread->td_ucred, curthread))) {
6957 sctp_over_udp_stop();
6960 /* Call the special UDP hook. */
6961 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
6962 sctp_recv_udp_tunneled_packet))) {
6963 sctp_over_udp_stop();
6966 /* Ok, we have a socket, bind it to the port. */
6967 memset(&sin6, 0, sizeof(struct sockaddr_in6));
6968 sin6.sin6_len = sizeof(struct sockaddr_in6);
6969 sin6.sin6_family = AF_INET6;
6970 sin6.sin6_port = htons(port);
6971 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
6972 (struct sockaddr *)&sin6, curthread))) {
6973 sctp_over_udp_stop();