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.
899 #if defined(SCTP_DETAILED_STR_STATS)
905 /* init all variables to a known value. */
906 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
907 asoc->max_burst = inp->sctp_ep.max_burst;
908 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
909 asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
910 asoc->cookie_life = inp->sctp_ep.def_cookie_life;
911 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
912 asoc->ecn_supported = inp->ecn_supported;
913 asoc->prsctp_supported = inp->prsctp_supported;
914 asoc->auth_supported = inp->auth_supported;
915 asoc->asconf_supported = inp->asconf_supported;
916 asoc->reconfig_supported = inp->reconfig_supported;
917 asoc->nrsack_supported = inp->nrsack_supported;
918 asoc->pktdrop_supported = inp->pktdrop_supported;
919 asoc->sctp_cmt_pf = (uint8_t) 0;
920 asoc->sctp_frag_point = inp->sctp_frag_point;
921 asoc->sctp_features = inp->sctp_features;
922 asoc->default_dscp = inp->sctp_ep.default_dscp;
924 if (inp->sctp_ep.default_flowlabel) {
925 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
927 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
928 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
929 asoc->default_flowlabel &= 0x000fffff;
930 asoc->default_flowlabel |= 0x80000000;
932 asoc->default_flowlabel = 0;
936 asoc->sb_send_resv = 0;
938 asoc->my_vtag = override_tag;
940 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
942 /* Get the nonce tags */
943 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
944 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
945 asoc->vrf_id = vrf_id;
947 #ifdef SCTP_ASOCLOG_OF_TSNS
949 asoc->tsn_out_at = 0;
950 asoc->tsn_in_wrapped = 0;
951 asoc->tsn_out_wrapped = 0;
952 asoc->cumack_log_at = 0;
953 asoc->cumack_log_atsnt = 0;
955 #ifdef SCTP_FS_SPEC_LOG
959 asoc->assoc_up_sent = 0;
960 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
961 sctp_select_initial_TSN(&inp->sctp_ep);
962 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
963 /* we are optimisitic here */
964 asoc->peer_supports_nat = 0;
965 asoc->sent_queue_retran_cnt = 0;
968 asoc->last_net_cmt_send_started = NULL;
970 /* This will need to be adjusted */
971 asoc->last_acked_seq = asoc->init_seq_number - 1;
972 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
973 asoc->asconf_seq_in = asoc->last_acked_seq;
975 /* here we are different, we hold the next one we expect */
976 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
978 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
979 asoc->initial_rto = inp->sctp_ep.initial_rto;
981 asoc->max_init_times = inp->sctp_ep.max_init_times;
982 asoc->max_send_times = inp->sctp_ep.max_send_times;
983 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
984 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
985 asoc->free_chunk_cnt = 0;
987 asoc->iam_blocking = 0;
988 asoc->context = inp->sctp_context;
989 asoc->local_strreset_support = inp->local_strreset_support;
990 asoc->def_send = inp->def_send;
991 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
992 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
993 asoc->pr_sctp_cnt = 0;
994 asoc->total_output_queue_size = 0;
996 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
997 asoc->scope.ipv6_addr_legal = 1;
998 if (SCTP_IPV6_V6ONLY(inp) == 0) {
999 asoc->scope.ipv4_addr_legal = 1;
1001 asoc->scope.ipv4_addr_legal = 0;
1004 asoc->scope.ipv6_addr_legal = 0;
1005 asoc->scope.ipv4_addr_legal = 1;
1008 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1009 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1011 asoc->smallest_mtu = inp->sctp_frag_point;
1012 asoc->minrto = inp->sctp_ep.sctp_minrto;
1013 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1015 asoc->locked_on_sending = NULL;
1016 asoc->stream_locked_on = 0;
1017 asoc->ecn_echo_cnt_onq = 0;
1018 asoc->stream_locked = 0;
1020 asoc->send_sack = 1;
1022 LIST_INIT(&asoc->sctp_restricted_addrs);
1024 TAILQ_INIT(&asoc->nets);
1025 TAILQ_INIT(&asoc->pending_reply_queue);
1026 TAILQ_INIT(&asoc->asconf_ack_sent);
1027 /* Setup to fill the hb random cache at first HB */
1028 asoc->hb_random_idx = 4;
1030 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1032 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1033 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1035 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1036 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1039 * Now the stream parameters, here we allocate space for all streams
1040 * that we request by default.
1042 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1043 inp->sctp_ep.pre_open_stream_count;
1044 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1045 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1047 if (asoc->strmout == NULL) {
1048 /* big trouble no memory */
1049 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1052 for (i = 0; i < asoc->streamoutcnt; i++) {
1054 * inbound side must be set to 0xffff, also NOTE when we get
1055 * the INIT-ACK back (for INIT sender) we MUST reduce the
1056 * count (streamoutcnt) but first check if we sent to any of
1057 * the upper streams that were dropped (if some were). Those
1058 * that were dropped must be notified to the upper layer as
1061 asoc->strmout[i].next_sequence_send = 0x0;
1062 TAILQ_INIT(&asoc->strmout[i].outqueue);
1063 asoc->strmout[i].chunks_on_queues = 0;
1064 #if defined(SCTP_DETAILED_STR_STATS)
1065 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1066 asoc->strmout[i].abandoned_sent[j] = 0;
1067 asoc->strmout[i].abandoned_unsent[j] = 0;
1070 asoc->strmout[i].abandoned_sent[0] = 0;
1071 asoc->strmout[i].abandoned_unsent[0] = 0;
1073 asoc->strmout[i].stream_no = i;
1074 asoc->strmout[i].last_msg_incomplete = 0;
1075 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL);
1077 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1079 /* Now the mapping array */
1080 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1081 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1083 if (asoc->mapping_array == NULL) {
1084 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1085 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1088 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1089 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1091 if (asoc->nr_mapping_array == NULL) {
1092 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1093 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1094 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1097 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1099 /* Now the init of the other outqueues */
1100 TAILQ_INIT(&asoc->free_chunks);
1101 TAILQ_INIT(&asoc->control_send_queue);
1102 TAILQ_INIT(&asoc->asconf_send_queue);
1103 TAILQ_INIT(&asoc->send_queue);
1104 TAILQ_INIT(&asoc->sent_queue);
1105 TAILQ_INIT(&asoc->reasmqueue);
1106 TAILQ_INIT(&asoc->resetHead);
1107 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1108 TAILQ_INIT(&asoc->asconf_queue);
1109 /* authentication fields */
1110 asoc->authinfo.random = NULL;
1111 asoc->authinfo.active_keyid = 0;
1112 asoc->authinfo.assoc_key = NULL;
1113 asoc->authinfo.assoc_keyid = 0;
1114 asoc->authinfo.recv_key = NULL;
1115 asoc->authinfo.recv_keyid = 0;
1116 LIST_INIT(&asoc->shared_keys);
1117 asoc->marked_retrans = 0;
1118 asoc->port = inp->sctp_ep.port;
1122 asoc->timoshutdown = 0;
1123 asoc->timoheartbeat = 0;
1124 asoc->timocookie = 0;
1125 asoc->timoshutdownack = 0;
1126 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1127 asoc->discontinuity_time = asoc->start_time;
1128 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1129 asoc->abandoned_unsent[i] = 0;
1130 asoc->abandoned_sent[i] = 0;
1133 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1134 * freed later when the association is freed.
1140 sctp_print_mapping_array(struct sctp_association *asoc)
1142 unsigned int i, limit;
1144 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1145 asoc->mapping_array_size,
1146 asoc->mapping_array_base_tsn,
1147 asoc->cumulative_tsn,
1148 asoc->highest_tsn_inside_map,
1149 asoc->highest_tsn_inside_nr_map);
1150 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1151 if (asoc->mapping_array[limit - 1] != 0) {
1155 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1156 for (i = 0; i < limit; i++) {
1157 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1161 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1162 if (asoc->nr_mapping_array[limit - 1]) {
1166 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1167 for (i = 0; i < limit; i++) {
1168 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1175 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1177 /* mapping array needs to grow */
1178 uint8_t *new_array1, *new_array2;
1181 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1182 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1183 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1184 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1185 /* can't get more, forget it */
1186 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1188 SCTP_FREE(new_array1, SCTP_M_MAP);
1191 SCTP_FREE(new_array2, SCTP_M_MAP);
1195 memset(new_array1, 0, new_size);
1196 memset(new_array2, 0, new_size);
1197 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1198 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1199 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1200 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1201 asoc->mapping_array = new_array1;
1202 asoc->nr_mapping_array = new_array2;
1203 asoc->mapping_array_size = new_size;
1209 sctp_iterator_work(struct sctp_iterator *it)
1211 int iteration_count = 0;
1214 struct sctp_inpcb *tinp;
1216 SCTP_INP_INFO_RLOCK();
1217 SCTP_ITERATOR_LOCK();
1219 SCTP_INP_RLOCK(it->inp);
1220 SCTP_INP_DECR_REF(it->inp);
1222 if (it->inp == NULL) {
1223 /* iterator is complete */
1225 SCTP_ITERATOR_UNLOCK();
1226 SCTP_INP_INFO_RUNLOCK();
1227 if (it->function_atend != NULL) {
1228 (*it->function_atend) (it->pointer, it->val);
1230 SCTP_FREE(it, SCTP_M_ITER);
1237 SCTP_INP_RLOCK(it->inp);
1239 while (((it->pcb_flags) &&
1240 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1241 ((it->pcb_features) &&
1242 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1243 /* endpoint flags or features don't match, so keep looking */
1244 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1245 SCTP_INP_RUNLOCK(it->inp);
1246 goto done_with_iterator;
1249 it->inp = LIST_NEXT(it->inp, sctp_list);
1250 SCTP_INP_RUNLOCK(tinp);
1251 if (it->inp == NULL) {
1252 goto done_with_iterator;
1254 SCTP_INP_RLOCK(it->inp);
1256 /* now go through each assoc which is in the desired state */
1257 if (it->done_current_ep == 0) {
1258 if (it->function_inp != NULL)
1259 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1260 it->done_current_ep = 1;
1262 if (it->stcb == NULL) {
1263 /* run the per instance function */
1264 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1266 if ((inp_skip) || it->stcb == NULL) {
1267 if (it->function_inp_end != NULL) {
1268 inp_skip = (*it->function_inp_end) (it->inp,
1272 SCTP_INP_RUNLOCK(it->inp);
1276 SCTP_TCB_LOCK(it->stcb);
1277 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1278 /* not in the right state... keep looking */
1279 SCTP_TCB_UNLOCK(it->stcb);
1282 /* see if we have limited out the iterator loop */
1284 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1285 /* Pause to let others grab the lock */
1286 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1287 SCTP_TCB_UNLOCK(it->stcb);
1288 SCTP_INP_INCR_REF(it->inp);
1289 SCTP_INP_RUNLOCK(it->inp);
1290 SCTP_ITERATOR_UNLOCK();
1291 SCTP_INP_INFO_RUNLOCK();
1292 SCTP_INP_INFO_RLOCK();
1293 SCTP_ITERATOR_LOCK();
1294 if (sctp_it_ctl.iterator_flags) {
1295 /* We won't be staying here */
1296 SCTP_INP_DECR_REF(it->inp);
1297 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1298 if (sctp_it_ctl.iterator_flags &
1299 SCTP_ITERATOR_STOP_CUR_IT) {
1300 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1301 goto done_with_iterator;
1303 if (sctp_it_ctl.iterator_flags &
1304 SCTP_ITERATOR_STOP_CUR_INP) {
1305 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1308 /* If we reach here huh? */
1309 SCTP_PRINTF("Unknown it ctl flag %x\n",
1310 sctp_it_ctl.iterator_flags);
1311 sctp_it_ctl.iterator_flags = 0;
1313 SCTP_INP_RLOCK(it->inp);
1314 SCTP_INP_DECR_REF(it->inp);
1315 SCTP_TCB_LOCK(it->stcb);
1316 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1317 iteration_count = 0;
1319 /* run function on this one */
1320 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1323 * we lie here, it really needs to have its own type but
1324 * first I must verify that this won't effect things :-0
1326 if (it->no_chunk_output == 0)
1327 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1329 SCTP_TCB_UNLOCK(it->stcb);
1331 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1332 if (it->stcb == NULL) {
1333 /* Run last function */
1334 if (it->function_inp_end != NULL) {
1335 inp_skip = (*it->function_inp_end) (it->inp,
1341 SCTP_INP_RUNLOCK(it->inp);
1343 /* done with all assocs on this endpoint, move on to next endpoint */
1344 it->done_current_ep = 0;
1345 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1348 it->inp = LIST_NEXT(it->inp, sctp_list);
1350 if (it->inp == NULL) {
1351 goto done_with_iterator;
1353 goto select_a_new_ep;
1357 sctp_iterator_worker(void)
1359 struct sctp_iterator *it, *nit;
1361 /* This function is called with the WQ lock in place */
1363 sctp_it_ctl.iterator_running = 1;
1364 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1365 sctp_it_ctl.cur_it = it;
1366 /* now lets work on this one */
1367 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1368 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1369 CURVNET_SET(it->vn);
1370 sctp_iterator_work(it);
1371 sctp_it_ctl.cur_it = NULL;
1373 SCTP_IPI_ITERATOR_WQ_LOCK();
1374 /* sa_ignore FREED_MEMORY */
1376 sctp_it_ctl.iterator_running = 0;
1382 sctp_handle_addr_wq(void)
1384 /* deal with the ADDR wq from the rtsock calls */
1385 struct sctp_laddr *wi, *nwi;
1386 struct sctp_asconf_iterator *asc;
1388 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1389 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1391 /* Try later, no memory */
1392 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1393 (struct sctp_inpcb *)NULL,
1394 (struct sctp_tcb *)NULL,
1395 (struct sctp_nets *)NULL);
1398 LIST_INIT(&asc->list_of_work);
1401 SCTP_WQ_ADDR_LOCK();
1402 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1403 LIST_REMOVE(wi, sctp_nxt_addr);
1404 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1407 SCTP_WQ_ADDR_UNLOCK();
1409 if (asc->cnt == 0) {
1410 SCTP_FREE(asc, SCTP_M_ASC_IT);
1412 (void)sctp_initiate_iterator(sctp_asconf_iterator_ep,
1413 sctp_asconf_iterator_stcb,
1414 NULL, /* No ep end for boundall */
1415 SCTP_PCB_FLAGS_BOUNDALL,
1416 SCTP_PCB_ANY_FEATURES,
1417 SCTP_ASOC_ANY_STATE,
1419 sctp_asconf_iterator_end, NULL, 0);
1424 sctp_timeout_handler(void *t)
1426 struct sctp_inpcb *inp;
1427 struct sctp_tcb *stcb;
1428 struct sctp_nets *net;
1429 struct sctp_timer *tmr;
1431 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1435 int did_output, type;
1437 tmr = (struct sctp_timer *)t;
1438 inp = (struct sctp_inpcb *)tmr->ep;
1439 stcb = (struct sctp_tcb *)tmr->tcb;
1440 net = (struct sctp_nets *)tmr->net;
1441 CURVNET_SET((struct vnet *)tmr->vnet);
1444 #ifdef SCTP_AUDITING_ENABLED
1445 sctp_audit_log(0xF0, (uint8_t) tmr->type);
1446 sctp_auditing(3, inp, stcb, net);
1449 /* sanity checks... */
1450 if (tmr->self != (void *)tmr) {
1452 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1458 tmr->stopped_from = 0xa001;
1459 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1461 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1467 tmr->stopped_from = 0xa002;
1468 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1472 /* if this is an iterator timeout, get the struct and clear inp */
1473 tmr->stopped_from = 0xa003;
1476 SCTP_INP_INCR_REF(inp);
1477 if ((inp->sctp_socket == NULL) &&
1478 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1479 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1480 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1481 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1482 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1483 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1484 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1485 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1486 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1488 SCTP_INP_DECR_REF(inp);
1493 tmr->stopped_from = 0xa004;
1495 atomic_add_int(&stcb->asoc.refcnt, 1);
1496 if (stcb->asoc.state == 0) {
1497 atomic_add_int(&stcb->asoc.refcnt, -1);
1499 SCTP_INP_DECR_REF(inp);
1505 tmr->stopped_from = 0xa005;
1506 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", tmr->type);
1507 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1509 SCTP_INP_DECR_REF(inp);
1512 atomic_add_int(&stcb->asoc.refcnt, -1);
1517 tmr->stopped_from = 0xa006;
1520 SCTP_TCB_LOCK(stcb);
1521 atomic_add_int(&stcb->asoc.refcnt, -1);
1522 if ((tmr->type != SCTP_TIMER_TYPE_ASOCKILL) &&
1523 ((stcb->asoc.state == 0) ||
1524 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1525 SCTP_TCB_UNLOCK(stcb);
1527 SCTP_INP_DECR_REF(inp);
1533 /* record in stopped what t-o occured */
1534 tmr->stopped_from = tmr->type;
1536 /* mark as being serviced now */
1537 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1539 * Callout has been rescheduled.
1543 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1545 * Not active, so no action.
1549 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1551 /* call the handler for the appropriate timer type */
1552 switch (tmr->type) {
1553 case SCTP_TIMER_TYPE_ZERO_COPY:
1557 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1558 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1561 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1565 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1566 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1569 case SCTP_TIMER_TYPE_ADDR_WQ:
1570 sctp_handle_addr_wq();
1572 case SCTP_TIMER_TYPE_SEND:
1573 if ((stcb == NULL) || (inp == NULL)) {
1576 SCTP_STAT_INCR(sctps_timodata);
1577 stcb->asoc.timodata++;
1578 stcb->asoc.num_send_timers_up--;
1579 if (stcb->asoc.num_send_timers_up < 0) {
1580 stcb->asoc.num_send_timers_up = 0;
1582 SCTP_TCB_LOCK_ASSERT(stcb);
1583 if (sctp_t3rxt_timer(inp, stcb, net)) {
1584 /* no need to unlock on tcb its gone */
1588 SCTP_TCB_LOCK_ASSERT(stcb);
1589 #ifdef SCTP_AUDITING_ENABLED
1590 sctp_auditing(4, inp, stcb, net);
1592 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1593 if ((stcb->asoc.num_send_timers_up == 0) &&
1594 (stcb->asoc.sent_queue_cnt > 0)) {
1595 struct sctp_tmit_chunk *chk;
1598 * safeguard. If there on some on the sent queue
1599 * somewhere but no timers running something is
1600 * wrong... so we start a timer on the first chunk
1601 * on the send queue on whatever net it is sent to.
1603 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1604 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1608 case SCTP_TIMER_TYPE_INIT:
1609 if ((stcb == NULL) || (inp == NULL)) {
1612 SCTP_STAT_INCR(sctps_timoinit);
1613 stcb->asoc.timoinit++;
1614 if (sctp_t1init_timer(inp, stcb, net)) {
1615 /* no need to unlock on tcb its gone */
1618 /* We do output but not here */
1621 case SCTP_TIMER_TYPE_RECV:
1622 if ((stcb == NULL) || (inp == NULL)) {
1625 SCTP_STAT_INCR(sctps_timosack);
1626 stcb->asoc.timosack++;
1627 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1628 #ifdef SCTP_AUDITING_ENABLED
1629 sctp_auditing(4, inp, stcb, net);
1631 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1633 case SCTP_TIMER_TYPE_SHUTDOWN:
1634 if ((stcb == NULL) || (inp == NULL)) {
1637 if (sctp_shutdown_timer(inp, stcb, net)) {
1638 /* no need to unlock on tcb its gone */
1641 SCTP_STAT_INCR(sctps_timoshutdown);
1642 stcb->asoc.timoshutdown++;
1643 #ifdef SCTP_AUDITING_ENABLED
1644 sctp_auditing(4, inp, stcb, net);
1646 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1648 case SCTP_TIMER_TYPE_HEARTBEAT:
1649 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1652 SCTP_STAT_INCR(sctps_timoheartbeat);
1653 stcb->asoc.timoheartbeat++;
1654 if (sctp_heartbeat_timer(inp, stcb, net)) {
1655 /* no need to unlock on tcb its gone */
1658 #ifdef SCTP_AUDITING_ENABLED
1659 sctp_auditing(4, inp, stcb, net);
1661 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1662 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1663 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1666 case SCTP_TIMER_TYPE_COOKIE:
1667 if ((stcb == NULL) || (inp == NULL)) {
1670 if (sctp_cookie_timer(inp, stcb, net)) {
1671 /* no need to unlock on tcb its gone */
1674 SCTP_STAT_INCR(sctps_timocookie);
1675 stcb->asoc.timocookie++;
1676 #ifdef SCTP_AUDITING_ENABLED
1677 sctp_auditing(4, inp, stcb, net);
1680 * We consider T3 and Cookie timer pretty much the same with
1681 * respect to where from in chunk_output.
1683 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1685 case SCTP_TIMER_TYPE_NEWCOOKIE:
1693 SCTP_STAT_INCR(sctps_timosecret);
1694 (void)SCTP_GETTIME_TIMEVAL(&tv);
1695 SCTP_INP_WLOCK(inp);
1696 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1697 inp->sctp_ep.last_secret_number =
1698 inp->sctp_ep.current_secret_number;
1699 inp->sctp_ep.current_secret_number++;
1700 if (inp->sctp_ep.current_secret_number >=
1701 SCTP_HOW_MANY_SECRETS) {
1702 inp->sctp_ep.current_secret_number = 0;
1704 secret = (int)inp->sctp_ep.current_secret_number;
1705 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1706 inp->sctp_ep.secret_key[secret][i] =
1707 sctp_select_initial_TSN(&inp->sctp_ep);
1709 SCTP_INP_WUNLOCK(inp);
1710 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1714 case SCTP_TIMER_TYPE_PATHMTURAISE:
1715 if ((stcb == NULL) || (inp == NULL)) {
1718 SCTP_STAT_INCR(sctps_timopathmtu);
1719 sctp_pathmtu_timer(inp, stcb, net);
1722 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1723 if ((stcb == NULL) || (inp == NULL)) {
1726 if (sctp_shutdownack_timer(inp, stcb, net)) {
1727 /* no need to unlock on tcb its gone */
1730 SCTP_STAT_INCR(sctps_timoshutdownack);
1731 stcb->asoc.timoshutdownack++;
1732 #ifdef SCTP_AUDITING_ENABLED
1733 sctp_auditing(4, inp, stcb, net);
1735 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1737 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1738 if ((stcb == NULL) || (inp == NULL)) {
1741 SCTP_STAT_INCR(sctps_timoshutdownguard);
1742 sctp_abort_an_association(inp, stcb, NULL, SCTP_SO_NOT_LOCKED);
1743 /* no need to unlock on tcb its gone */
1746 case SCTP_TIMER_TYPE_STRRESET:
1747 if ((stcb == NULL) || (inp == NULL)) {
1750 if (sctp_strreset_timer(inp, stcb, net)) {
1751 /* no need to unlock on tcb its gone */
1754 SCTP_STAT_INCR(sctps_timostrmrst);
1755 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1757 case SCTP_TIMER_TYPE_ASCONF:
1758 if ((stcb == NULL) || (inp == NULL)) {
1761 if (sctp_asconf_timer(inp, stcb, net)) {
1762 /* no need to unlock on tcb its gone */
1765 SCTP_STAT_INCR(sctps_timoasconf);
1766 #ifdef SCTP_AUDITING_ENABLED
1767 sctp_auditing(4, inp, stcb, net);
1769 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1771 case SCTP_TIMER_TYPE_PRIM_DELETED:
1772 if ((stcb == NULL) || (inp == NULL)) {
1775 sctp_delete_prim_timer(inp, stcb, net);
1776 SCTP_STAT_INCR(sctps_timodelprim);
1779 case SCTP_TIMER_TYPE_AUTOCLOSE:
1780 if ((stcb == NULL) || (inp == NULL)) {
1783 SCTP_STAT_INCR(sctps_timoautoclose);
1784 sctp_autoclose_timer(inp, stcb, net);
1785 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1788 case SCTP_TIMER_TYPE_ASOCKILL:
1789 if ((stcb == NULL) || (inp == NULL)) {
1792 SCTP_STAT_INCR(sctps_timoassockill);
1793 /* Can we free it yet? */
1794 SCTP_INP_DECR_REF(inp);
1795 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1796 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1797 so = SCTP_INP_SO(inp);
1798 atomic_add_int(&stcb->asoc.refcnt, 1);
1799 SCTP_TCB_UNLOCK(stcb);
1800 SCTP_SOCKET_LOCK(so, 1);
1801 SCTP_TCB_LOCK(stcb);
1802 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1804 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1805 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1806 SCTP_SOCKET_UNLOCK(so, 1);
1809 * free asoc, always unlocks (or destroy's) so prevent
1810 * duplicate unlock or unlock of a free mtx :-0
1814 case SCTP_TIMER_TYPE_INPKILL:
1815 SCTP_STAT_INCR(sctps_timoinpkill);
1820 * special case, take away our increment since WE are the
1823 SCTP_INP_DECR_REF(inp);
1824 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1825 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1826 SCTP_CALLED_FROM_INPKILL_TIMER);
1830 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1834 #ifdef SCTP_AUDITING_ENABLED
1835 sctp_audit_log(0xF1, (uint8_t) tmr->type);
1837 sctp_auditing(5, inp, stcb, net);
1839 if ((did_output) && stcb) {
1841 * Now we need to clean up the control chunk chain if an
1842 * ECNE is on it. It must be marked as UNSENT again so next
1843 * call will continue to send it until such time that we get
1844 * a CWR, to remove it. It is, however, less likely that we
1845 * will find a ecn echo on the chain though.
1847 sctp_fix_ecn_echo(&stcb->asoc);
1851 SCTP_TCB_UNLOCK(stcb);
1855 SCTP_INP_DECR_REF(inp);
1858 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type %d)\n",
1864 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1865 struct sctp_nets *net)
1868 struct sctp_timer *tmr;
1870 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1875 SCTP_TCB_LOCK_ASSERT(stcb);
1878 case SCTP_TIMER_TYPE_ZERO_COPY:
1879 tmr = &inp->sctp_ep.zero_copy_timer;
1880 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1882 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1883 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1884 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1886 case SCTP_TIMER_TYPE_ADDR_WQ:
1887 /* Only 1 tick away :-) */
1888 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1889 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1891 case SCTP_TIMER_TYPE_SEND:
1892 /* Here we use the RTO timer */
1896 if ((stcb == NULL) || (net == NULL)) {
1899 tmr = &net->rxt_timer;
1900 if (net->RTO == 0) {
1901 rto_val = stcb->asoc.initial_rto;
1905 to_ticks = MSEC_TO_TICKS(rto_val);
1908 case SCTP_TIMER_TYPE_INIT:
1910 * Here we use the INIT timer default usually about 1
1913 if ((stcb == NULL) || (net == NULL)) {
1916 tmr = &net->rxt_timer;
1917 if (net->RTO == 0) {
1918 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1920 to_ticks = MSEC_TO_TICKS(net->RTO);
1923 case SCTP_TIMER_TYPE_RECV:
1925 * Here we use the Delayed-Ack timer value from the inp
1926 * ususually about 200ms.
1931 tmr = &stcb->asoc.dack_timer;
1932 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
1934 case SCTP_TIMER_TYPE_SHUTDOWN:
1935 /* Here we use the RTO of the destination. */
1936 if ((stcb == NULL) || (net == NULL)) {
1939 if (net->RTO == 0) {
1940 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1942 to_ticks = MSEC_TO_TICKS(net->RTO);
1944 tmr = &net->rxt_timer;
1946 case SCTP_TIMER_TYPE_HEARTBEAT:
1948 * the net is used here so that we can add in the RTO. Even
1949 * though we use a different timer. We also add the HB timer
1950 * PLUS a random jitter.
1952 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
1958 if ((net->dest_state & SCTP_ADDR_NOHB) &&
1959 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
1962 if (net->RTO == 0) {
1963 to_ticks = stcb->asoc.initial_rto;
1965 to_ticks = net->RTO;
1967 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
1968 jitter = rndval % to_ticks;
1969 if (jitter >= (to_ticks >> 1)) {
1970 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
1972 to_ticks = to_ticks - jitter;
1974 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
1975 !(net->dest_state & SCTP_ADDR_PF)) {
1976 to_ticks += net->heart_beat_delay;
1979 * Now we must convert the to_ticks that are now in
1982 to_ticks = MSEC_TO_TICKS(to_ticks);
1983 tmr = &net->hb_timer;
1986 case SCTP_TIMER_TYPE_COOKIE:
1988 * Here we can use the RTO timer from the network since one
1989 * RTT was compelete. If a retran happened then we will be
1990 * using the RTO initial value.
1992 if ((stcb == NULL) || (net == NULL)) {
1995 if (net->RTO == 0) {
1996 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1998 to_ticks = MSEC_TO_TICKS(net->RTO);
2000 tmr = &net->rxt_timer;
2002 case SCTP_TIMER_TYPE_NEWCOOKIE:
2004 * nothing needed but the endpoint here ususually about 60
2010 tmr = &inp->sctp_ep.signature_change;
2011 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2013 case SCTP_TIMER_TYPE_ASOCKILL:
2017 tmr = &stcb->asoc.strreset_timer;
2018 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2020 case SCTP_TIMER_TYPE_INPKILL:
2022 * The inp is setup to die. We re-use the signature_chage
2023 * timer since that has stopped and we are in the GONE
2029 tmr = &inp->sctp_ep.signature_change;
2030 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2032 case SCTP_TIMER_TYPE_PATHMTURAISE:
2034 * Here we use the value found in the EP for PMTU ususually
2037 if ((stcb == NULL) || (inp == NULL)) {
2043 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2046 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2047 tmr = &net->pmtu_timer;
2049 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2050 /* Here we use the RTO of the destination */
2051 if ((stcb == NULL) || (net == NULL)) {
2054 if (net->RTO == 0) {
2055 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2057 to_ticks = MSEC_TO_TICKS(net->RTO);
2059 tmr = &net->rxt_timer;
2061 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2063 * Here we use the endpoints shutdown guard timer usually
2066 if ((inp == NULL) || (stcb == NULL)) {
2069 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2070 tmr = &stcb->asoc.shut_guard_timer;
2072 case SCTP_TIMER_TYPE_STRRESET:
2074 * Here the timer comes from the stcb but its value is from
2077 if ((stcb == NULL) || (net == NULL)) {
2080 if (net->RTO == 0) {
2081 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2083 to_ticks = MSEC_TO_TICKS(net->RTO);
2085 tmr = &stcb->asoc.strreset_timer;
2087 case SCTP_TIMER_TYPE_ASCONF:
2089 * Here the timer comes from the stcb but its value is from
2092 if ((stcb == NULL) || (net == NULL)) {
2095 if (net->RTO == 0) {
2096 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2098 to_ticks = MSEC_TO_TICKS(net->RTO);
2100 tmr = &stcb->asoc.asconf_timer;
2102 case SCTP_TIMER_TYPE_PRIM_DELETED:
2103 if ((stcb == NULL) || (net != NULL)) {
2106 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2107 tmr = &stcb->asoc.delete_prim_timer;
2109 case SCTP_TIMER_TYPE_AUTOCLOSE:
2113 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2115 * Really an error since stcb is NOT set to
2120 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2121 tmr = &stcb->asoc.autoclose_timer;
2124 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2125 __FUNCTION__, t_type);
2129 if ((to_ticks <= 0) || (tmr == NULL)) {
2130 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2131 __FUNCTION__, t_type, to_ticks, (void *)tmr);
2134 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2136 * we do NOT allow you to have it already running. if it is
2137 * we leave the current one up unchanged
2141 /* At this point we can proceed */
2142 if (t_type == SCTP_TIMER_TYPE_SEND) {
2143 stcb->asoc.num_send_timers_up++;
2145 tmr->stopped_from = 0;
2147 tmr->ep = (void *)inp;
2148 tmr->tcb = (void *)stcb;
2149 tmr->net = (void *)net;
2150 tmr->self = (void *)tmr;
2151 tmr->vnet = (void *)curvnet;
2152 tmr->ticks = sctp_get_tick_count();
2153 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2158 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2159 struct sctp_nets *net, uint32_t from)
2161 struct sctp_timer *tmr;
2163 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2169 SCTP_TCB_LOCK_ASSERT(stcb);
2172 case SCTP_TIMER_TYPE_ZERO_COPY:
2173 tmr = &inp->sctp_ep.zero_copy_timer;
2175 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2176 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2178 case SCTP_TIMER_TYPE_ADDR_WQ:
2179 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2181 case SCTP_TIMER_TYPE_SEND:
2182 if ((stcb == NULL) || (net == NULL)) {
2185 tmr = &net->rxt_timer;
2187 case SCTP_TIMER_TYPE_INIT:
2188 if ((stcb == NULL) || (net == NULL)) {
2191 tmr = &net->rxt_timer;
2193 case SCTP_TIMER_TYPE_RECV:
2197 tmr = &stcb->asoc.dack_timer;
2199 case SCTP_TIMER_TYPE_SHUTDOWN:
2200 if ((stcb == NULL) || (net == NULL)) {
2203 tmr = &net->rxt_timer;
2205 case SCTP_TIMER_TYPE_HEARTBEAT:
2206 if ((stcb == NULL) || (net == NULL)) {
2209 tmr = &net->hb_timer;
2211 case SCTP_TIMER_TYPE_COOKIE:
2212 if ((stcb == NULL) || (net == NULL)) {
2215 tmr = &net->rxt_timer;
2217 case SCTP_TIMER_TYPE_NEWCOOKIE:
2218 /* nothing needed but the endpoint here */
2219 tmr = &inp->sctp_ep.signature_change;
2221 * We re-use the newcookie timer for the INP kill timer. We
2222 * must assure that we do not kill it by accident.
2225 case SCTP_TIMER_TYPE_ASOCKILL:
2227 * Stop the asoc kill timer.
2232 tmr = &stcb->asoc.strreset_timer;
2235 case SCTP_TIMER_TYPE_INPKILL:
2237 * The inp is setup to die. We re-use the signature_chage
2238 * timer since that has stopped and we are in the GONE
2241 tmr = &inp->sctp_ep.signature_change;
2243 case SCTP_TIMER_TYPE_PATHMTURAISE:
2244 if ((stcb == NULL) || (net == NULL)) {
2247 tmr = &net->pmtu_timer;
2249 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2250 if ((stcb == NULL) || (net == NULL)) {
2253 tmr = &net->rxt_timer;
2255 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2259 tmr = &stcb->asoc.shut_guard_timer;
2261 case SCTP_TIMER_TYPE_STRRESET:
2265 tmr = &stcb->asoc.strreset_timer;
2267 case SCTP_TIMER_TYPE_ASCONF:
2271 tmr = &stcb->asoc.asconf_timer;
2273 case SCTP_TIMER_TYPE_PRIM_DELETED:
2277 tmr = &stcb->asoc.delete_prim_timer;
2279 case SCTP_TIMER_TYPE_AUTOCLOSE:
2283 tmr = &stcb->asoc.autoclose_timer;
2286 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2287 __FUNCTION__, t_type);
2293 if ((tmr->type != t_type) && tmr->type) {
2295 * Ok we have a timer that is under joint use. Cookie timer
2296 * per chance with the SEND timer. We therefore are NOT
2297 * running the timer that the caller wants stopped. So just
2302 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2303 stcb->asoc.num_send_timers_up--;
2304 if (stcb->asoc.num_send_timers_up < 0) {
2305 stcb->asoc.num_send_timers_up = 0;
2309 tmr->stopped_from = from;
2310 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2315 sctp_calculate_len(struct mbuf *m)
2322 tlen += SCTP_BUF_LEN(at);
2323 at = SCTP_BUF_NEXT(at);
2329 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2330 struct sctp_association *asoc, uint32_t mtu)
2333 * Reset the P-MTU size on this association, this involves changing
2334 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2335 * allow the DF flag to be cleared.
2337 struct sctp_tmit_chunk *chk;
2338 unsigned int eff_mtu, ovh;
2340 asoc->smallest_mtu = mtu;
2341 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2342 ovh = SCTP_MIN_OVERHEAD;
2344 ovh = SCTP_MIN_V4_OVERHEAD;
2346 eff_mtu = mtu - ovh;
2347 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2348 if (chk->send_size > eff_mtu) {
2349 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2352 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2353 if (chk->send_size > eff_mtu) {
2354 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2361 * given an association and starting time of the current RTT period return
2362 * RTO in number of msecs net should point to the current network
2366 sctp_calculate_rto(struct sctp_tcb *stcb,
2367 struct sctp_association *asoc,
2368 struct sctp_nets *net,
2369 struct timeval *told,
2370 int safe, int rtt_from_sack)
2373 * given an association and the starting time of the current RTT
2374 * period (in value1/value2) return RTO in number of msecs.
2376 int32_t rtt; /* RTT in ms */
2378 int first_measure = 0;
2379 struct timeval now, then, *old;
2381 /* Copy it out for sparc64 */
2382 if (safe == sctp_align_unsafe_makecopy) {
2384 memcpy(&then, told, sizeof(struct timeval));
2385 } else if (safe == sctp_align_safe_nocopy) {
2389 SCTP_PRINTF("Huh, bad rto calc call\n");
2392 /************************/
2393 /* 1. calculate new RTT */
2394 /************************/
2395 /* get the current time */
2396 if (stcb->asoc.use_precise_time) {
2397 (void)SCTP_GETPTIME_TIMEVAL(&now);
2399 (void)SCTP_GETTIME_TIMEVAL(&now);
2401 timevalsub(&now, old);
2402 /* store the current RTT in us */
2403 net->rtt = (uint64_t) 1000000 *(uint64_t) now.tv_sec +
2404 (uint64_t) now.tv_usec;
2406 /* computer rtt in ms */
2407 rtt = net->rtt / 1000;
2408 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2410 * Tell the CC module that a new update has just occurred
2413 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2416 * Do we need to determine the lan? We do this only on sacks i.e.
2417 * RTT being determined from data not non-data (HB/INIT->INITACK).
2419 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2420 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2421 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2422 net->lan_type = SCTP_LAN_INTERNET;
2424 net->lan_type = SCTP_LAN_LOCAL;
2427 /***************************/
2428 /* 2. update RTTVAR & SRTT */
2429 /***************************/
2431 * Compute the scaled average lastsa and the
2432 * scaled variance lastsv as described in van Jacobson
2433 * Paper "Congestion Avoidance and Control", Annex A.
2435 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2436 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2438 if (net->RTO_measured) {
2439 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2444 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2446 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2447 rto_logging(net, SCTP_LOG_RTTVAR);
2450 /* First RTO measurment */
2451 net->RTO_measured = 1;
2453 net->lastsa = rtt << SCTP_RTT_SHIFT;
2454 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2455 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2456 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2459 if (net->lastsv == 0) {
2460 net->lastsv = SCTP_CLOCK_GRANULARITY;
2462 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2463 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2464 (stcb->asoc.sat_network_lockout == 0)) {
2465 stcb->asoc.sat_network = 1;
2466 } else if ((!first_measure) && stcb->asoc.sat_network) {
2467 stcb->asoc.sat_network = 0;
2468 stcb->asoc.sat_network_lockout = 1;
2470 /* bound it, per C6/C7 in Section 5.3.1 */
2471 if (new_rto < stcb->asoc.minrto) {
2472 new_rto = stcb->asoc.minrto;
2474 if (new_rto > stcb->asoc.maxrto) {
2475 new_rto = stcb->asoc.maxrto;
2477 /* we are now returning the RTO */
2482 * return a pointer to a contiguous piece of data from the given mbuf chain
2483 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2484 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2485 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2488 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
2494 if ((off < 0) || (len <= 0))
2497 /* find the desired start location */
2498 while ((m != NULL) && (off > 0)) {
2499 if (off < SCTP_BUF_LEN(m))
2501 off -= SCTP_BUF_LEN(m);
2502 m = SCTP_BUF_NEXT(m);
2507 /* is the current mbuf large enough (eg. contiguous)? */
2508 if ((SCTP_BUF_LEN(m) - off) >= len) {
2509 return (mtod(m, caddr_t)+off);
2511 /* else, it spans more than one mbuf, so save a temp copy... */
2512 while ((m != NULL) && (len > 0)) {
2513 count = min(SCTP_BUF_LEN(m) - off, len);
2514 bcopy(mtod(m, caddr_t)+off, ptr, count);
2518 m = SCTP_BUF_NEXT(m);
2520 if ((m == NULL) && (len > 0))
2523 return ((caddr_t)in_ptr);
2529 struct sctp_paramhdr *
2530 sctp_get_next_param(struct mbuf *m,
2532 struct sctp_paramhdr *pull,
2535 /* This just provides a typed signature to Peter's Pull routine */
2536 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2542 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2544 struct mbuf *m_last;
2550 if (padlen <= M_TRAILINGSPACE(m)) {
2552 * The easy way. We hope the majority of the time we hit
2557 /* Hard way we must grow the mbuf chain */
2558 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2559 if (m_last == NULL) {
2562 SCTP_BUF_LEN(m_last) = 0;
2563 SCTP_BUF_NEXT(m_last) = NULL;
2564 SCTP_BUF_NEXT(m) = m_last;
2566 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2567 SCTP_BUF_LEN(m_last) += padlen;
2568 memset(dp, 0, padlen);
2573 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2575 /* find the last mbuf in chain and pad it */
2578 if (last_mbuf != NULL) {
2579 return (sctp_add_pad_tombuf(last_mbuf, padval));
2581 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2582 if (SCTP_BUF_NEXT(m_at) == NULL) {
2583 return (sctp_add_pad_tombuf(m_at, padval));
2591 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2592 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2593 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2598 struct mbuf *m_notify;
2599 struct sctp_assoc_change *sac;
2600 struct sctp_queued_to_read *control;
2601 size_t notif_len, abort_len;
2604 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2609 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2610 notif_len = sizeof(struct sctp_assoc_change);
2611 if (abort != NULL) {
2612 abort_len = ntohs(abort->ch.chunk_length);
2616 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2617 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2618 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2619 notif_len += abort_len;
2621 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2622 if (m_notify == NULL) {
2623 /* Retry with smaller value. */
2624 notif_len = sizeof(struct sctp_assoc_change);
2625 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2626 if (m_notify == NULL) {
2630 SCTP_BUF_NEXT(m_notify) = NULL;
2631 sac = mtod(m_notify, struct sctp_assoc_change *);
2632 memset(sac, 0, notif_len);
2633 sac->sac_type = SCTP_ASSOC_CHANGE;
2635 sac->sac_length = sizeof(struct sctp_assoc_change);
2636 sac->sac_state = state;
2637 sac->sac_error = error;
2638 /* XXX verify these stream counts */
2639 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2640 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2641 sac->sac_assoc_id = sctp_get_associd(stcb);
2642 if (notif_len > sizeof(struct sctp_assoc_change)) {
2643 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2645 if (stcb->asoc.prsctp_supported == 1) {
2646 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2648 if (stcb->asoc.auth_supported == 1) {
2649 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2651 if (stcb->asoc.asconf_supported == 1) {
2652 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2654 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2655 if (stcb->asoc.reconfig_supported == 1) {
2656 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2658 sac->sac_length += i;
2659 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2660 memcpy(sac->sac_info, abort, abort_len);
2661 sac->sac_length += abort_len;
2664 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2665 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2666 0, 0, stcb->asoc.context, 0, 0, 0,
2668 if (control != NULL) {
2669 control->length = SCTP_BUF_LEN(m_notify);
2670 /* not that we need this */
2671 control->tail_mbuf = m_notify;
2672 control->spec_flags = M_NOTIFICATION;
2673 sctp_add_to_readq(stcb->sctp_ep, stcb,
2675 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2678 sctp_m_freem(m_notify);
2682 * For 1-to-1 style sockets, we send up and error when an ABORT
2686 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2687 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2688 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2689 SOCK_LOCK(stcb->sctp_socket);
2691 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2692 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2693 stcb->sctp_socket->so_error = ECONNREFUSED;
2695 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2696 stcb->sctp_socket->so_error = ECONNRESET;
2699 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2700 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2701 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2702 stcb->sctp_socket->so_error = ETIMEDOUT;
2704 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2705 stcb->sctp_socket->so_error = ECONNABORTED;
2709 /* Wake ANY sleepers */
2710 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2711 so = SCTP_INP_SO(stcb->sctp_ep);
2713 atomic_add_int(&stcb->asoc.refcnt, 1);
2714 SCTP_TCB_UNLOCK(stcb);
2715 SCTP_SOCKET_LOCK(so, 1);
2716 SCTP_TCB_LOCK(stcb);
2717 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2718 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2719 SCTP_SOCKET_UNLOCK(so, 1);
2724 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2725 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2726 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2727 socantrcvmore_locked(stcb->sctp_socket);
2729 sorwakeup(stcb->sctp_socket);
2730 sowwakeup(stcb->sctp_socket);
2731 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2733 SCTP_SOCKET_UNLOCK(so, 1);
2739 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2740 struct sockaddr *sa, uint32_t error)
2742 struct mbuf *m_notify;
2743 struct sctp_paddr_change *spc;
2744 struct sctp_queued_to_read *control;
2746 if ((stcb == NULL) ||
2747 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2748 /* event not enabled */
2751 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2752 if (m_notify == NULL)
2754 SCTP_BUF_LEN(m_notify) = 0;
2755 spc = mtod(m_notify, struct sctp_paddr_change *);
2756 memset(spc, 0, sizeof(struct sctp_paddr_change));
2757 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2759 spc->spc_length = sizeof(struct sctp_paddr_change);
2760 switch (sa->sa_family) {
2763 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2769 struct sockaddr_in6 *sin6;
2771 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2773 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2774 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2775 if (sin6->sin6_scope_id == 0) {
2776 /* recover scope_id for user */
2777 (void)sa6_recoverscope(sin6);
2779 /* clear embedded scope_id for user */
2780 in6_clearscope(&sin6->sin6_addr);
2790 spc->spc_state = state;
2791 spc->spc_error = error;
2792 spc->spc_assoc_id = sctp_get_associd(stcb);
2794 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2795 SCTP_BUF_NEXT(m_notify) = NULL;
2797 /* append to socket */
2798 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2799 0, 0, stcb->asoc.context, 0, 0, 0,
2801 if (control == NULL) {
2803 sctp_m_freem(m_notify);
2806 control->length = SCTP_BUF_LEN(m_notify);
2807 control->spec_flags = M_NOTIFICATION;
2808 /* not that we need this */
2809 control->tail_mbuf = m_notify;
2810 sctp_add_to_readq(stcb->sctp_ep, stcb,
2812 &stcb->sctp_socket->so_rcv, 1,
2813 SCTP_READ_LOCK_NOT_HELD,
2814 SCTP_SO_NOT_LOCKED);
2819 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2820 struct sctp_tmit_chunk *chk, int so_locked
2821 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2826 struct mbuf *m_notify;
2827 struct sctp_send_failed *ssf;
2828 struct sctp_send_failed_event *ssfe;
2829 struct sctp_queued_to_read *control;
2832 if ((stcb == NULL) ||
2833 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2834 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2835 /* event not enabled */
2838 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2839 length = sizeof(struct sctp_send_failed_event);
2841 length = sizeof(struct sctp_send_failed);
2843 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2844 if (m_notify == NULL)
2847 SCTP_BUF_LEN(m_notify) = 0;
2848 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2849 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2850 memset(ssfe, 0, length);
2851 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2853 ssfe->ssfe_flags = SCTP_DATA_SENT;
2855 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2857 length += chk->send_size;
2858 length -= sizeof(struct sctp_data_chunk);
2859 ssfe->ssfe_length = length;
2860 ssfe->ssfe_error = error;
2861 /* not exactly what the user sent in, but should be close :) */
2862 ssfe->ssfe_info.snd_sid = chk->rec.data.stream_number;
2863 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2864 ssfe->ssfe_info.snd_ppid = chk->rec.data.payloadtype;
2865 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2866 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2867 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2868 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2870 ssf = mtod(m_notify, struct sctp_send_failed *);
2871 memset(ssf, 0, length);
2872 ssf->ssf_type = SCTP_SEND_FAILED;
2874 ssf->ssf_flags = SCTP_DATA_SENT;
2876 ssf->ssf_flags = SCTP_DATA_UNSENT;
2878 length += chk->send_size;
2879 length -= sizeof(struct sctp_data_chunk);
2880 ssf->ssf_length = length;
2881 ssf->ssf_error = error;
2882 /* not exactly what the user sent in, but should be close :) */
2883 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2884 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2885 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2886 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2887 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2888 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2889 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2890 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2891 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2895 * trim off the sctp chunk header(it should be there)
2897 if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
2898 m_adj(chk->data, sizeof(struct sctp_data_chunk));
2899 sctp_mbuf_crush(chk->data);
2900 chk->send_size -= sizeof(struct sctp_data_chunk);
2903 SCTP_BUF_NEXT(m_notify) = chk->data;
2904 /* Steal off the mbuf */
2907 * For this case, we check the actual socket buffer, since the assoc
2908 * is going away we don't want to overfill the socket buffer for a
2911 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
2912 sctp_m_freem(m_notify);
2915 /* append to socket */
2916 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2917 0, 0, stcb->asoc.context, 0, 0, 0,
2919 if (control == NULL) {
2921 sctp_m_freem(m_notify);
2924 control->spec_flags = M_NOTIFICATION;
2925 sctp_add_to_readq(stcb->sctp_ep, stcb,
2927 &stcb->sctp_socket->so_rcv, 1,
2928 SCTP_READ_LOCK_NOT_HELD,
2934 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
2935 struct sctp_stream_queue_pending *sp, int so_locked
2936 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2941 struct mbuf *m_notify;
2942 struct sctp_send_failed *ssf;
2943 struct sctp_send_failed_event *ssfe;
2944 struct sctp_queued_to_read *control;
2947 if ((stcb == NULL) ||
2948 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2949 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2950 /* event not enabled */
2953 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2954 length = sizeof(struct sctp_send_failed_event);
2956 length = sizeof(struct sctp_send_failed);
2958 m_notify = sctp_get_mbuf_for_msg(length, 0, M_NOWAIT, 1, MT_DATA);
2959 if (m_notify == NULL) {
2963 SCTP_BUF_LEN(m_notify) = 0;
2964 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2965 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2966 memset(ssfe, 0, length);
2967 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2968 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2969 length += sp->length;
2970 ssfe->ssfe_length = length;
2971 ssfe->ssfe_error = error;
2972 /* not exactly what the user sent in, but should be close :) */
2973 ssfe->ssfe_info.snd_sid = sp->stream;
2974 if (sp->some_taken) {
2975 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
2977 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
2979 ssfe->ssfe_info.snd_ppid = sp->ppid;
2980 ssfe->ssfe_info.snd_context = sp->context;
2981 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2982 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2983 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed_event);
2985 ssf = mtod(m_notify, struct sctp_send_failed *);
2986 memset(ssf, 0, length);
2987 ssf->ssf_type = SCTP_SEND_FAILED;
2988 ssf->ssf_flags = SCTP_DATA_UNSENT;
2989 length += sp->length;
2990 ssf->ssf_length = length;
2991 ssf->ssf_error = error;
2992 /* not exactly what the user sent in, but should be close :) */
2993 ssf->ssf_info.sinfo_stream = sp->stream;
2994 ssf->ssf_info.sinfo_ssn = 0;
2995 if (sp->some_taken) {
2996 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
2998 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3000 ssf->ssf_info.sinfo_ppid = sp->ppid;
3001 ssf->ssf_info.sinfo_context = sp->context;
3002 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3003 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3004 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
3006 SCTP_BUF_NEXT(m_notify) = sp->data;
3008 /* Steal off the mbuf */
3011 * For this case, we check the actual socket buffer, since the assoc
3012 * is going away we don't want to overfill the socket buffer for a
3015 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3016 sctp_m_freem(m_notify);
3019 /* append to socket */
3020 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3021 0, 0, stcb->asoc.context, 0, 0, 0,
3023 if (control == NULL) {
3025 sctp_m_freem(m_notify);
3028 control->spec_flags = M_NOTIFICATION;
3029 sctp_add_to_readq(stcb->sctp_ep, stcb,
3031 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3037 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3039 struct mbuf *m_notify;
3040 struct sctp_adaptation_event *sai;
3041 struct sctp_queued_to_read *control;
3043 if ((stcb == NULL) ||
3044 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3045 /* event not enabled */
3048 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3049 if (m_notify == NULL)
3052 SCTP_BUF_LEN(m_notify) = 0;
3053 sai = mtod(m_notify, struct sctp_adaptation_event *);
3054 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3055 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3057 sai->sai_length = sizeof(struct sctp_adaptation_event);
3058 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3059 sai->sai_assoc_id = sctp_get_associd(stcb);
3061 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3062 SCTP_BUF_NEXT(m_notify) = NULL;
3064 /* append to socket */
3065 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3066 0, 0, stcb->asoc.context, 0, 0, 0,
3068 if (control == NULL) {
3070 sctp_m_freem(m_notify);
3073 control->length = SCTP_BUF_LEN(m_notify);
3074 control->spec_flags = M_NOTIFICATION;
3075 /* not that we need this */
3076 control->tail_mbuf = m_notify;
3077 sctp_add_to_readq(stcb->sctp_ep, stcb,
3079 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3082 /* This always must be called with the read-queue LOCKED in the INP */
3084 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3085 uint32_t val, int so_locked
3086 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3091 struct mbuf *m_notify;
3092 struct sctp_pdapi_event *pdapi;
3093 struct sctp_queued_to_read *control;
3096 if ((stcb == NULL) ||
3097 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3098 /* event not enabled */
3101 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3104 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3105 if (m_notify == NULL)
3108 SCTP_BUF_LEN(m_notify) = 0;
3109 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3110 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3111 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3112 pdapi->pdapi_flags = 0;
3113 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3114 pdapi->pdapi_indication = error;
3115 pdapi->pdapi_stream = (val >> 16);
3116 pdapi->pdapi_seq = (val & 0x0000ffff);
3117 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3119 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3120 SCTP_BUF_NEXT(m_notify) = NULL;
3121 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3122 0, 0, stcb->asoc.context, 0, 0, 0,
3124 if (control == NULL) {
3126 sctp_m_freem(m_notify);
3129 control->spec_flags = M_NOTIFICATION;
3130 control->length = SCTP_BUF_LEN(m_notify);
3131 /* not that we need this */
3132 control->tail_mbuf = m_notify;
3133 control->held_length = 0;
3134 control->length = 0;
3135 sb = &stcb->sctp_socket->so_rcv;
3136 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3137 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3139 sctp_sballoc(stcb, sb, m_notify);
3140 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3141 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3143 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3144 control->end_added = 1;
3145 if (stcb->asoc.control_pdapi)
3146 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3148 /* we really should not see this case */
3149 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3151 if (stcb->sctp_ep && stcb->sctp_socket) {
3152 /* This should always be the case */
3153 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3156 so = SCTP_INP_SO(stcb->sctp_ep);
3158 atomic_add_int(&stcb->asoc.refcnt, 1);
3159 SCTP_TCB_UNLOCK(stcb);
3160 SCTP_SOCKET_LOCK(so, 1);
3161 SCTP_TCB_LOCK(stcb);
3162 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3163 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3164 SCTP_SOCKET_UNLOCK(so, 1);
3169 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3170 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3172 SCTP_SOCKET_UNLOCK(so, 1);
3179 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3181 struct mbuf *m_notify;
3182 struct sctp_shutdown_event *sse;
3183 struct sctp_queued_to_read *control;
3186 * For TCP model AND UDP connected sockets we will send an error up
3187 * when an SHUTDOWN completes
3189 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3190 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3191 /* mark socket closed for read/write and wakeup! */
3192 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3195 so = SCTP_INP_SO(stcb->sctp_ep);
3196 atomic_add_int(&stcb->asoc.refcnt, 1);
3197 SCTP_TCB_UNLOCK(stcb);
3198 SCTP_SOCKET_LOCK(so, 1);
3199 SCTP_TCB_LOCK(stcb);
3200 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3201 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3202 SCTP_SOCKET_UNLOCK(so, 1);
3206 socantsendmore(stcb->sctp_socket);
3207 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3208 SCTP_SOCKET_UNLOCK(so, 1);
3211 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3212 /* event not enabled */
3215 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3216 if (m_notify == NULL)
3219 sse = mtod(m_notify, struct sctp_shutdown_event *);
3220 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3221 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3223 sse->sse_length = sizeof(struct sctp_shutdown_event);
3224 sse->sse_assoc_id = sctp_get_associd(stcb);
3226 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3227 SCTP_BUF_NEXT(m_notify) = NULL;
3229 /* append to socket */
3230 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3231 0, 0, stcb->asoc.context, 0, 0, 0,
3233 if (control == NULL) {
3235 sctp_m_freem(m_notify);
3238 control->spec_flags = M_NOTIFICATION;
3239 control->length = SCTP_BUF_LEN(m_notify);
3240 /* not that we need this */
3241 control->tail_mbuf = m_notify;
3242 sctp_add_to_readq(stcb->sctp_ep, stcb,
3244 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3248 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3250 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3255 struct mbuf *m_notify;
3256 struct sctp_sender_dry_event *event;
3257 struct sctp_queued_to_read *control;
3259 if ((stcb == NULL) ||
3260 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3261 /* event not enabled */
3264 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3265 if (m_notify == NULL) {
3269 SCTP_BUF_LEN(m_notify) = 0;
3270 event = mtod(m_notify, struct sctp_sender_dry_event *);
3271 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3272 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3273 event->sender_dry_flags = 0;
3274 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3275 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3277 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3278 SCTP_BUF_NEXT(m_notify) = NULL;
3280 /* append to socket */
3281 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3282 0, 0, stcb->asoc.context, 0, 0, 0,
3284 if (control == NULL) {
3286 sctp_m_freem(m_notify);
3289 control->length = SCTP_BUF_LEN(m_notify);
3290 control->spec_flags = M_NOTIFICATION;
3291 /* not that we need this */
3292 control->tail_mbuf = m_notify;
3293 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3294 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3299 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3301 struct mbuf *m_notify;
3302 struct sctp_queued_to_read *control;
3303 struct sctp_stream_change_event *stradd;
3305 if ((stcb == NULL) ||
3306 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3307 /* event not enabled */
3310 if ((stcb->asoc.peer_req_out) && flag) {
3311 /* Peer made the request, don't tell the local user */
3312 stcb->asoc.peer_req_out = 0;
3315 stcb->asoc.peer_req_out = 0;
3316 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3317 if (m_notify == NULL)
3320 SCTP_BUF_LEN(m_notify) = 0;
3321 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3322 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3323 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3324 stradd->strchange_flags = flag;
3325 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3326 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3327 stradd->strchange_instrms = numberin;
3328 stradd->strchange_outstrms = numberout;
3329 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3330 SCTP_BUF_NEXT(m_notify) = NULL;
3331 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3333 sctp_m_freem(m_notify);
3336 /* append to socket */
3337 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3338 0, 0, stcb->asoc.context, 0, 0, 0,
3340 if (control == NULL) {
3342 sctp_m_freem(m_notify);
3345 control->spec_flags = M_NOTIFICATION;
3346 control->length = SCTP_BUF_LEN(m_notify);
3347 /* not that we need this */
3348 control->tail_mbuf = m_notify;
3349 sctp_add_to_readq(stcb->sctp_ep, stcb,
3351 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3355 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3357 struct mbuf *m_notify;
3358 struct sctp_queued_to_read *control;
3359 struct sctp_assoc_reset_event *strasoc;
3361 if ((stcb == NULL) ||
3362 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3363 /* event not enabled */
3366 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3367 if (m_notify == NULL)
3370 SCTP_BUF_LEN(m_notify) = 0;
3371 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3372 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3373 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3374 strasoc->assocreset_flags = flag;
3375 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3376 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3377 strasoc->assocreset_local_tsn = sending_tsn;
3378 strasoc->assocreset_remote_tsn = recv_tsn;
3379 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3380 SCTP_BUF_NEXT(m_notify) = NULL;
3381 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3383 sctp_m_freem(m_notify);
3386 /* append to socket */
3387 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3388 0, 0, stcb->asoc.context, 0, 0, 0,
3390 if (control == NULL) {
3392 sctp_m_freem(m_notify);
3395 control->spec_flags = M_NOTIFICATION;
3396 control->length = SCTP_BUF_LEN(m_notify);
3397 /* not that we need this */
3398 control->tail_mbuf = m_notify;
3399 sctp_add_to_readq(stcb->sctp_ep, stcb,
3401 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3407 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3408 int number_entries, uint16_t * list, int flag)
3410 struct mbuf *m_notify;
3411 struct sctp_queued_to_read *control;
3412 struct sctp_stream_reset_event *strreset;
3415 if ((stcb == NULL) ||
3416 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3417 /* event not enabled */
3420 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3421 if (m_notify == NULL)
3424 SCTP_BUF_LEN(m_notify) = 0;
3425 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3426 if (len > M_TRAILINGSPACE(m_notify)) {
3427 /* never enough room */
3428 sctp_m_freem(m_notify);
3431 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3432 memset(strreset, 0, len);
3433 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3434 strreset->strreset_flags = flag;
3435 strreset->strreset_length = len;
3436 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3437 if (number_entries) {
3440 for (i = 0; i < number_entries; i++) {
3441 strreset->strreset_stream_list[i] = ntohs(list[i]);
3444 SCTP_BUF_LEN(m_notify) = len;
3445 SCTP_BUF_NEXT(m_notify) = NULL;
3446 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3448 sctp_m_freem(m_notify);
3451 /* append to socket */
3452 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3453 0, 0, stcb->asoc.context, 0, 0, 0,
3455 if (control == NULL) {
3457 sctp_m_freem(m_notify);
3460 control->spec_flags = M_NOTIFICATION;
3461 control->length = SCTP_BUF_LEN(m_notify);
3462 /* not that we need this */
3463 control->tail_mbuf = m_notify;
3464 sctp_add_to_readq(stcb->sctp_ep, stcb,
3466 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3471 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3473 struct mbuf *m_notify;
3474 struct sctp_remote_error *sre;
3475 struct sctp_queued_to_read *control;
3476 size_t notif_len, chunk_len;
3478 if ((stcb == NULL) ||
3479 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3482 if (chunk != NULL) {
3483 chunk_len = ntohs(chunk->ch.chunk_length);
3487 notif_len = sizeof(struct sctp_remote_error) + chunk_len;
3488 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3489 if (m_notify == NULL) {
3490 /* Retry with smaller value. */
3491 notif_len = sizeof(struct sctp_remote_error);
3492 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3493 if (m_notify == NULL) {
3497 SCTP_BUF_NEXT(m_notify) = NULL;
3498 sre = mtod(m_notify, struct sctp_remote_error *);
3499 memset(sre, 0, notif_len);
3500 sre->sre_type = SCTP_REMOTE_ERROR;
3502 sre->sre_length = sizeof(struct sctp_remote_error);
3503 sre->sre_error = error;
3504 sre->sre_assoc_id = sctp_get_associd(stcb);
3505 if (notif_len > sizeof(struct sctp_remote_error)) {
3506 memcpy(sre->sre_data, chunk, chunk_len);
3507 sre->sre_length += chunk_len;
3509 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3510 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3511 0, 0, stcb->asoc.context, 0, 0, 0,
3513 if (control != NULL) {
3514 control->length = SCTP_BUF_LEN(m_notify);
3515 /* not that we need this */
3516 control->tail_mbuf = m_notify;
3517 control->spec_flags = M_NOTIFICATION;
3518 sctp_add_to_readq(stcb->sctp_ep, stcb,
3520 &stcb->sctp_socket->so_rcv, 1,
3521 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3523 sctp_m_freem(m_notify);
3529 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3530 uint32_t error, void *data, int so_locked
3531 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3536 if ((stcb == NULL) ||
3537 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3538 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3539 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3540 /* If the socket is gone we are out of here */
3543 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3546 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3547 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3548 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3549 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3550 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3551 /* Don't report these in front states */
3555 switch (notification) {
3556 case SCTP_NOTIFY_ASSOC_UP:
3557 if (stcb->asoc.assoc_up_sent == 0) {
3558 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3559 stcb->asoc.assoc_up_sent = 1;
3561 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3562 sctp_notify_adaptation_layer(stcb);
3564 if (stcb->asoc.auth_supported == 0) {
3565 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3569 case SCTP_NOTIFY_ASSOC_DOWN:
3570 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3572 case SCTP_NOTIFY_INTERFACE_DOWN:
3574 struct sctp_nets *net;
3576 net = (struct sctp_nets *)data;
3577 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3578 (struct sockaddr *)&net->ro._l_addr, error);
3581 case SCTP_NOTIFY_INTERFACE_UP:
3583 struct sctp_nets *net;
3585 net = (struct sctp_nets *)data;
3586 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3587 (struct sockaddr *)&net->ro._l_addr, error);
3590 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3592 struct sctp_nets *net;
3594 net = (struct sctp_nets *)data;
3595 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3596 (struct sockaddr *)&net->ro._l_addr, error);
3599 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3600 sctp_notify_send_failed2(stcb, error,
3601 (struct sctp_stream_queue_pending *)data, so_locked);
3603 case SCTP_NOTIFY_SENT_DG_FAIL:
3604 sctp_notify_send_failed(stcb, 1, error,
3605 (struct sctp_tmit_chunk *)data, so_locked);
3607 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3608 sctp_notify_send_failed(stcb, 0, error,
3609 (struct sctp_tmit_chunk *)data, so_locked);
3611 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3615 val = *((uint32_t *) data);
3617 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3620 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3621 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3622 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3623 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3625 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3628 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3629 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3630 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3631 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3633 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3636 case SCTP_NOTIFY_ASSOC_RESTART:
3637 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3638 if (stcb->asoc.auth_supported == 0) {
3639 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3643 case SCTP_NOTIFY_STR_RESET_SEND:
3644 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_OUTGOING_SSN);
3646 case SCTP_NOTIFY_STR_RESET_RECV:
3647 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STREAM_RESET_INCOMING);
3649 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3650 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3651 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3653 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3654 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3655 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3657 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3658 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3659 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3661 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3662 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data),
3663 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3665 case SCTP_NOTIFY_ASCONF_ADD_IP:
3666 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3669 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3670 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3673 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3674 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3677 case SCTP_NOTIFY_PEER_SHUTDOWN:
3678 sctp_notify_shutdown_event(stcb);
3680 case SCTP_NOTIFY_AUTH_NEW_KEY:
3681 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3682 (uint16_t) (uintptr_t) data,
3685 case SCTP_NOTIFY_AUTH_FREE_KEY:
3686 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3687 (uint16_t) (uintptr_t) data,
3690 case SCTP_NOTIFY_NO_PEER_AUTH:
3691 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3692 (uint16_t) (uintptr_t) data,
3695 case SCTP_NOTIFY_SENDER_DRY:
3696 sctp_notify_sender_dry_event(stcb, so_locked);
3698 case SCTP_NOTIFY_REMOTE_ERROR:
3699 sctp_notify_remote_error(stcb, error, data);
3702 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3703 __FUNCTION__, notification, notification);
3709 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3710 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3715 struct sctp_association *asoc;
3716 struct sctp_stream_out *outs;
3717 struct sctp_tmit_chunk *chk, *nchk;
3718 struct sctp_stream_queue_pending *sp, *nsp;
3725 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3726 /* already being freed */
3729 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3730 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3731 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3734 /* now through all the gunk freeing chunks */
3735 if (holds_lock == 0) {
3736 SCTP_TCB_SEND_LOCK(stcb);
3738 /* sent queue SHOULD be empty */
3739 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3740 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3741 asoc->sent_queue_cnt--;
3742 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3743 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3744 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3747 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3751 if (chk->data != NULL) {
3752 sctp_free_bufspace(stcb, asoc, chk, 1);
3753 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3754 error, chk, so_locked);
3756 sctp_m_freem(chk->data);
3760 sctp_free_a_chunk(stcb, chk, so_locked);
3761 /* sa_ignore FREED_MEMORY */
3763 /* pending send queue SHOULD be empty */
3764 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3765 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3766 asoc->send_queue_cnt--;
3767 if (asoc->strmout[chk->rec.data.stream_number].chunks_on_queues > 0) {
3768 asoc->strmout[chk->rec.data.stream_number].chunks_on_queues--;
3771 panic("No chunks on the queues for sid %u.", chk->rec.data.stream_number);
3774 if (chk->data != NULL) {
3775 sctp_free_bufspace(stcb, asoc, chk, 1);
3776 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3777 error, chk, so_locked);
3779 sctp_m_freem(chk->data);
3783 sctp_free_a_chunk(stcb, chk, so_locked);
3784 /* sa_ignore FREED_MEMORY */
3786 for (i = 0; i < asoc->streamoutcnt; i++) {
3787 /* For each stream */
3788 outs = &asoc->strmout[i];
3789 /* clean up any sends there */
3790 asoc->locked_on_sending = NULL;
3791 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3792 asoc->stream_queue_cnt--;
3793 TAILQ_REMOVE(&outs->outqueue, sp, next);
3794 sctp_free_spbufspace(stcb, asoc, sp);
3796 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3797 error, (void *)sp, so_locked);
3799 sctp_m_freem(sp->data);
3801 sp->tail_mbuf = NULL;
3806 sctp_free_remote_addr(sp->net);
3809 /* Free the chunk */
3810 sctp_free_a_strmoq(stcb, sp, so_locked);
3811 /* sa_ignore FREED_MEMORY */
3815 if (holds_lock == 0) {
3816 SCTP_TCB_SEND_UNLOCK(stcb);
3821 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3822 struct sctp_abort_chunk *abort, int so_locked
3823 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3831 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3832 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3833 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3834 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3836 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3837 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3838 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3841 /* Tell them we lost the asoc */
3842 sctp_report_all_outbound(stcb, error, 1, so_locked);
3844 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3846 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3851 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3852 struct mbuf *m, int iphlen,
3853 struct sockaddr *src, struct sockaddr *dst,
3854 struct sctphdr *sh, struct mbuf *op_err,
3855 uint8_t use_mflowid, uint32_t mflowid,
3856 uint32_t vrf_id, uint16_t port)
3860 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3867 /* We have a TCB to abort, send notification too */
3868 vtag = stcb->asoc.peer_vtag;
3869 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3870 /* get the assoc vrf id and table id */
3871 vrf_id = stcb->asoc.vrf_id;
3872 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3874 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3875 use_mflowid, mflowid,
3878 /* Ok, now lets free it */
3879 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3880 so = SCTP_INP_SO(inp);
3881 atomic_add_int(&stcb->asoc.refcnt, 1);
3882 SCTP_TCB_UNLOCK(stcb);
3883 SCTP_SOCKET_LOCK(so, 1);
3884 SCTP_TCB_LOCK(stcb);
3885 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3887 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3888 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3889 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3890 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3892 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
3893 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3894 SCTP_SOCKET_UNLOCK(so, 1);
3899 #ifdef SCTP_ASOCLOG_OF_TSNS
3901 sctp_print_out_track_log(struct sctp_tcb *stcb)
3906 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
3907 SCTP_PRINTF("IN bound TSN log-aaa\n");
3908 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
3909 SCTP_PRINTF("None rcvd\n");
3912 if (stcb->asoc.tsn_in_wrapped) {
3913 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
3914 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3915 stcb->asoc.in_tsnlog[i].tsn,
3916 stcb->asoc.in_tsnlog[i].strm,
3917 stcb->asoc.in_tsnlog[i].seq,
3918 stcb->asoc.in_tsnlog[i].flgs,
3919 stcb->asoc.in_tsnlog[i].sz);
3922 if (stcb->asoc.tsn_in_at) {
3923 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
3924 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3925 stcb->asoc.in_tsnlog[i].tsn,
3926 stcb->asoc.in_tsnlog[i].strm,
3927 stcb->asoc.in_tsnlog[i].seq,
3928 stcb->asoc.in_tsnlog[i].flgs,
3929 stcb->asoc.in_tsnlog[i].sz);
3933 SCTP_PRINTF("OUT bound TSN log-aaa\n");
3934 if ((stcb->asoc.tsn_out_at == 0) &&
3935 (stcb->asoc.tsn_out_wrapped == 0)) {
3936 SCTP_PRINTF("None sent\n");
3938 if (stcb->asoc.tsn_out_wrapped) {
3939 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
3940 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3941 stcb->asoc.out_tsnlog[i].tsn,
3942 stcb->asoc.out_tsnlog[i].strm,
3943 stcb->asoc.out_tsnlog[i].seq,
3944 stcb->asoc.out_tsnlog[i].flgs,
3945 stcb->asoc.out_tsnlog[i].sz);
3948 if (stcb->asoc.tsn_out_at) {
3949 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
3950 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3951 stcb->asoc.out_tsnlog[i].tsn,
3952 stcb->asoc.out_tsnlog[i].strm,
3953 stcb->asoc.out_tsnlog[i].seq,
3954 stcb->asoc.out_tsnlog[i].flgs,
3955 stcb->asoc.out_tsnlog[i].sz);
3964 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3965 struct mbuf *op_err,
3967 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3972 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3977 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3978 so = SCTP_INP_SO(inp);
3981 /* Got to have a TCB */
3982 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3983 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
3984 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
3985 SCTP_CALLED_DIRECTLY_NOCMPSET);
3990 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3992 /* notify the ulp */
3993 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
3994 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
3996 /* notify the peer */
3997 sctp_send_abort_tcb(stcb, op_err, so_locked);
3998 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3999 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
4000 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4001 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4003 /* now free the asoc */
4004 #ifdef SCTP_ASOCLOG_OF_TSNS
4005 sctp_print_out_track_log(stcb);
4007 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4009 atomic_add_int(&stcb->asoc.refcnt, 1);
4010 SCTP_TCB_UNLOCK(stcb);
4011 SCTP_SOCKET_LOCK(so, 1);
4012 SCTP_TCB_LOCK(stcb);
4013 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4016 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4017 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4019 SCTP_SOCKET_UNLOCK(so, 1);
4025 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4026 struct sockaddr *src, struct sockaddr *dst,
4027 struct sctphdr *sh, struct sctp_inpcb *inp,
4029 uint8_t use_mflowid, uint32_t mflowid,
4030 uint32_t vrf_id, uint16_t port)
4032 struct sctp_chunkhdr *ch, chunk_buf;
4033 unsigned int chk_length;
4034 int contains_init_chunk;
4036 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4037 /* Generate a TO address for future reference */
4038 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4039 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4040 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4041 SCTP_CALLED_DIRECTLY_NOCMPSET);
4044 contains_init_chunk = 0;
4045 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4046 sizeof(*ch), (uint8_t *) & chunk_buf);
4047 while (ch != NULL) {
4048 chk_length = ntohs(ch->chunk_length);
4049 if (chk_length < sizeof(*ch)) {
4050 /* break to abort land */
4053 switch (ch->chunk_type) {
4055 contains_init_chunk = 1;
4057 case SCTP_PACKET_DROPPED:
4058 /* we don't respond to pkt-dropped */
4060 case SCTP_ABORT_ASSOCIATION:
4061 /* we don't respond with an ABORT to an ABORT */
4063 case SCTP_SHUTDOWN_COMPLETE:
4065 * we ignore it since we are not waiting for it and
4069 case SCTP_SHUTDOWN_ACK:
4070 sctp_send_shutdown_complete2(src, dst, sh,
4071 use_mflowid, mflowid,
4077 offset += SCTP_SIZE32(chk_length);
4078 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4079 sizeof(*ch), (uint8_t *) & chunk_buf);
4081 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4082 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4083 (contains_init_chunk == 0))) {
4084 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4085 use_mflowid, mflowid,
4091 * check the inbound datagram to make sure there is not an abort inside it,
4092 * if there is return 1, else return 0.
4095 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
4097 struct sctp_chunkhdr *ch;
4098 struct sctp_init_chunk *init_chk, chunk_buf;
4100 unsigned int chk_length;
4102 offset = iphlen + sizeof(struct sctphdr);
4103 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4104 (uint8_t *) & chunk_buf);
4105 while (ch != NULL) {
4106 chk_length = ntohs(ch->chunk_length);
4107 if (chk_length < sizeof(*ch)) {
4108 /* packet is probably corrupt */
4111 /* we seem to be ok, is it an abort? */
4112 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4113 /* yep, tell them */
4116 if (ch->chunk_type == SCTP_INITIATION) {
4117 /* need to update the Vtag */
4118 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4119 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
4120 if (init_chk != NULL) {
4121 *vtagfill = ntohl(init_chk->init.initiate_tag);
4124 /* Nope, move to the next chunk */
4125 offset += SCTP_SIZE32(chk_length);
4126 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4127 sizeof(*ch), (uint8_t *) & chunk_buf);
4133 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4134 * set (i.e. it's 0) so, create this function to compare link local scopes
4138 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4140 struct sockaddr_in6 a, b;
4146 if (a.sin6_scope_id == 0)
4147 if (sa6_recoverscope(&a)) {
4148 /* can't get scope, so can't match */
4151 if (b.sin6_scope_id == 0)
4152 if (sa6_recoverscope(&b)) {
4153 /* can't get scope, so can't match */
4156 if (a.sin6_scope_id != b.sin6_scope_id)
4163 * returns a sockaddr_in6 with embedded scope recovered and removed
4165 struct sockaddr_in6 *
4166 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4168 /* check and strip embedded scope junk */
4169 if (addr->sin6_family == AF_INET6) {
4170 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4171 if (addr->sin6_scope_id == 0) {
4173 if (!sa6_recoverscope(store)) {
4174 /* use the recovered scope */
4178 /* else, return the original "to" addr */
4179 in6_clearscope(&addr->sin6_addr);
4189 * are the two addresses the same? currently a "scopeless" check returns: 1
4193 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4197 if (sa1 == NULL || sa2 == NULL)
4200 /* must be the same family */
4201 if (sa1->sa_family != sa2->sa_family)
4204 switch (sa1->sa_family) {
4208 /* IPv6 addresses */
4209 struct sockaddr_in6 *sin6_1, *sin6_2;
4211 sin6_1 = (struct sockaddr_in6 *)sa1;
4212 sin6_2 = (struct sockaddr_in6 *)sa2;
4213 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4220 /* IPv4 addresses */
4221 struct sockaddr_in *sin_1, *sin_2;
4223 sin_1 = (struct sockaddr_in *)sa1;
4224 sin_2 = (struct sockaddr_in *)sa2;
4225 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4229 /* we don't do these... */
4235 sctp_print_address(struct sockaddr *sa)
4238 char ip6buf[INET6_ADDRSTRLEN];
4242 switch (sa->sa_family) {
4246 struct sockaddr_in6 *sin6;
4248 sin6 = (struct sockaddr_in6 *)sa;
4249 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4250 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4251 ntohs(sin6->sin6_port),
4252 sin6->sin6_scope_id);
4259 struct sockaddr_in *sin;
4262 sin = (struct sockaddr_in *)sa;
4263 p = (unsigned char *)&sin->sin_addr;
4264 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4265 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4276 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4277 struct sctp_inpcb *new_inp,
4278 struct sctp_tcb *stcb,
4282 * go through our old INP and pull off any control structures that
4283 * belong to stcb and move then to the new inp.
4285 struct socket *old_so, *new_so;
4286 struct sctp_queued_to_read *control, *nctl;
4287 struct sctp_readhead tmp_queue;
4291 old_so = old_inp->sctp_socket;
4292 new_so = new_inp->sctp_socket;
4293 TAILQ_INIT(&tmp_queue);
4294 error = sblock(&old_so->so_rcv, waitflags);
4297 * Gak, can't get sblock, we have a problem. data will be
4298 * left stranded.. and we don't dare look at it since the
4299 * other thread may be reading something. Oh well, its a
4300 * screwed up app that does a peeloff OR a accept while
4301 * reading from the main socket... actually its only the
4302 * peeloff() case, since I think read will fail on a
4303 * listening socket..
4307 /* lock the socket buffers */
4308 SCTP_INP_READ_LOCK(old_inp);
4309 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4310 /* Pull off all for out target stcb */
4311 if (control->stcb == stcb) {
4312 /* remove it we want it */
4313 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4314 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4317 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4318 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4320 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4321 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4322 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4324 m = SCTP_BUF_NEXT(m);
4328 SCTP_INP_READ_UNLOCK(old_inp);
4329 /* Remove the sb-lock on the old socket */
4331 sbunlock(&old_so->so_rcv);
4332 /* Now we move them over to the new socket buffer */
4333 SCTP_INP_READ_LOCK(new_inp);
4334 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4335 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4338 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4339 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4341 sctp_sballoc(stcb, &new_so->so_rcv, m);
4342 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4343 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4345 m = SCTP_BUF_NEXT(m);
4348 SCTP_INP_READ_UNLOCK(new_inp);
4352 sctp_add_to_readq(struct sctp_inpcb *inp,
4353 struct sctp_tcb *stcb,
4354 struct sctp_queued_to_read *control,
4357 int inp_read_lock_held,
4359 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4365 * Here we must place the control on the end of the socket read
4366 * queue AND increment sb_cc so that select will work properly on
4369 struct mbuf *m, *prev = NULL;
4374 panic("Gak, inp NULL on add_to_readq");
4378 if (inp_read_lock_held == 0)
4379 SCTP_INP_READ_LOCK(inp);
4380 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4381 sctp_free_remote_addr(control->whoFrom);
4382 if (control->data) {
4383 sctp_m_freem(control->data);
4384 control->data = NULL;
4386 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4387 if (inp_read_lock_held == 0)
4388 SCTP_INP_READ_UNLOCK(inp);
4391 if (!(control->spec_flags & M_NOTIFICATION)) {
4392 atomic_add_int(&inp->total_recvs, 1);
4393 if (!control->do_not_ref_stcb) {
4394 atomic_add_int(&stcb->total_recvs, 1);
4398 control->held_length = 0;
4399 control->length = 0;
4401 if (SCTP_BUF_LEN(m) == 0) {
4402 /* Skip mbufs with NO length */
4405 control->data = sctp_m_free(m);
4408 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4409 m = SCTP_BUF_NEXT(prev);
4412 control->tail_mbuf = prev;
4417 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4418 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4420 sctp_sballoc(stcb, sb, m);
4421 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4422 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4424 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4425 m = SCTP_BUF_NEXT(m);
4428 control->tail_mbuf = prev;
4430 /* Everything got collapsed out?? */
4431 sctp_free_remote_addr(control->whoFrom);
4432 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4433 if (inp_read_lock_held == 0)
4434 SCTP_INP_READ_UNLOCK(inp);
4438 control->end_added = 1;
4440 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4441 if (inp_read_lock_held == 0)
4442 SCTP_INP_READ_UNLOCK(inp);
4443 if (inp && inp->sctp_socket) {
4444 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4445 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4447 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4450 so = SCTP_INP_SO(inp);
4453 atomic_add_int(&stcb->asoc.refcnt, 1);
4454 SCTP_TCB_UNLOCK(stcb);
4456 SCTP_SOCKET_LOCK(so, 1);
4458 SCTP_TCB_LOCK(stcb);
4459 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4461 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4462 SCTP_SOCKET_UNLOCK(so, 1);
4467 sctp_sorwakeup(inp, inp->sctp_socket);
4468 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4470 SCTP_SOCKET_UNLOCK(so, 1);
4479 sctp_append_to_readq(struct sctp_inpcb *inp,
4480 struct sctp_tcb *stcb,
4481 struct sctp_queued_to_read *control,
4488 * A partial delivery API event is underway. OR we are appending on
4489 * the reassembly queue.
4491 * If PDAPI this means we need to add m to the end of the data.
4492 * Increase the length in the control AND increment the sb_cc.
4493 * Otherwise sb is NULL and all we need to do is put it at the end
4494 * of the mbuf chain.
4497 struct mbuf *mm, *tail = NULL, *prev = NULL;
4500 SCTP_INP_READ_LOCK(inp);
4502 if (control == NULL) {
4505 SCTP_INP_READ_UNLOCK(inp);
4509 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) {
4510 SCTP_INP_READ_UNLOCK(inp);
4513 if (control->end_added) {
4514 /* huh this one is complete? */
4522 if (SCTP_BUF_LEN(mm) == 0) {
4523 /* Skip mbufs with NO lenght */
4526 m = sctp_m_free(mm);
4529 SCTP_BUF_NEXT(prev) = sctp_m_free(mm);
4530 mm = SCTP_BUF_NEXT(prev);
4535 len += SCTP_BUF_LEN(mm);
4537 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4538 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm));
4540 sctp_sballoc(stcb, sb, mm);
4541 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4542 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4545 mm = SCTP_BUF_NEXT(mm);
4550 /* Really there should always be a prev */
4552 /* Huh nothing left? */
4554 panic("Nothing left to add?");
4561 if (control->tail_mbuf) {
4563 SCTP_BUF_NEXT(control->tail_mbuf) = m;
4564 control->tail_mbuf = tail;
4568 if (control->data != NULL) {
4569 panic("This should NOT happen");
4573 control->tail_mbuf = tail;
4575 atomic_add_int(&control->length, len);
4577 /* message is complete */
4578 if (stcb && (control == stcb->asoc.control_pdapi)) {
4579 stcb->asoc.control_pdapi = NULL;
4581 control->held_length = 0;
4582 control->end_added = 1;
4585 control->do_not_ref_stcb = 1;
4588 * When we are appending in partial delivery, the cum-ack is used
4589 * for the actual pd-api highest tsn on this mbuf. The true cum-ack
4590 * is populated in the outbound sinfo structure from the true cumack
4591 * if the association exists...
4593 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack;
4595 SCTP_INP_READ_UNLOCK(inp);
4597 if (inp && inp->sctp_socket) {
4598 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4599 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4601 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4604 so = SCTP_INP_SO(inp);
4606 atomic_add_int(&stcb->asoc.refcnt, 1);
4607 SCTP_TCB_UNLOCK(stcb);
4609 SCTP_SOCKET_LOCK(so, 1);
4611 SCTP_TCB_LOCK(stcb);
4612 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4614 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4615 SCTP_SOCKET_UNLOCK(so, 1);
4619 sctp_sorwakeup(inp, inp->sctp_socket);
4620 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4621 SCTP_SOCKET_UNLOCK(so, 1);
4630 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4631 *************ALTERNATE ROUTING CODE
4634 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4635 *************ALTERNATE ROUTING CODE
4639 sctp_generate_cause(uint16_t code, char *info)
4642 struct sctp_gen_error_cause *cause;
4643 size_t info_len, len;
4645 if ((code == 0) || (info == NULL)) {
4648 info_len = strlen(info);
4649 len = sizeof(struct sctp_paramhdr) + info_len;
4650 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4652 SCTP_BUF_LEN(m) = len;
4653 cause = mtod(m, struct sctp_gen_error_cause *);
4654 cause->code = htons(code);
4655 cause->length = htons((uint16_t) len);
4656 memcpy(cause->info, info, info_len);
4662 sctp_generate_no_user_data_cause(uint32_t tsn)
4665 struct sctp_error_no_user_data *no_user_data_cause;
4668 len = sizeof(struct sctp_error_no_user_data);
4669 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4671 SCTP_BUF_LEN(m) = len;
4672 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4673 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4674 no_user_data_cause->cause.length = htons((uint16_t) len);
4675 no_user_data_cause->tsn = tsn; /* tsn is passed in as NBO */
4680 #ifdef SCTP_MBCNT_LOGGING
4682 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4683 struct sctp_tmit_chunk *tp1, int chk_cnt)
4685 if (tp1->data == NULL) {
4688 asoc->chunks_on_out_queue -= chk_cnt;
4689 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4690 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4691 asoc->total_output_queue_size,
4696 if (asoc->total_output_queue_size >= tp1->book_size) {
4697 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4699 asoc->total_output_queue_size = 0;
4702 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4703 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4704 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4705 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4707 stcb->sctp_socket->so_snd.sb_cc = 0;
4716 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4717 uint8_t sent, int so_locked
4718 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4723 struct sctp_stream_out *strq;
4724 struct sctp_tmit_chunk *chk = NULL, *tp2;
4725 struct sctp_stream_queue_pending *sp;
4726 uint16_t stream = 0, seq = 0;
4727 uint8_t foundeom = 0;
4730 int do_wakeup_routine = 0;
4732 stream = tp1->rec.data.stream_number;
4733 seq = tp1->rec.data.stream_seq;
4734 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
4735 stcb->asoc.abandoned_sent[0]++;
4736 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4737 stcb->asoc.strmout[stream].abandoned_sent[0]++;
4738 #if defined(SCTP_DETAILED_STR_STATS)
4739 stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4742 stcb->asoc.abandoned_unsent[0]++;
4743 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4744 stcb->asoc.strmout[stream].abandoned_unsent[0]++;
4745 #if defined(SCTP_DETAILED_STR_STATS)
4746 stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4750 ret_sz += tp1->book_size;
4751 if (tp1->data != NULL) {
4752 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4753 sctp_flight_size_decrease(tp1);
4754 sctp_total_flight_decrease(stcb, tp1);
4756 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4757 stcb->asoc.peers_rwnd += tp1->send_size;
4758 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4760 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4762 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4765 sctp_m_freem(tp1->data);
4768 do_wakeup_routine = 1;
4769 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4770 stcb->asoc.sent_queue_cnt_removeable--;
4773 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4774 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4775 SCTP_DATA_NOT_FRAG) {
4776 /* not frag'ed we ae done */
4779 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4780 /* end of frag, we are done */
4785 * Its a begin or middle piece, we must mark all of
4789 tp1 = TAILQ_NEXT(tp1, sctp_next);
4791 } while (tp1 && notdone);
4792 if (foundeom == 0) {
4794 * The multi-part message was scattered across the send and
4797 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4798 if ((tp1->rec.data.stream_number != stream) ||
4799 (tp1->rec.data.stream_seq != seq)) {
4803 * save to chk in case we have some on stream out
4804 * queue. If so and we have an un-transmitted one we
4805 * don't have to fudge the TSN.
4808 ret_sz += tp1->book_size;
4809 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4811 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4813 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4816 sctp_m_freem(tp1->data);
4819 /* No flight involved here book the size to 0 */
4821 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4824 do_wakeup_routine = 1;
4825 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4826 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4828 * on to the sent queue so we can wait for it to be
4831 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4833 stcb->asoc.send_queue_cnt--;
4834 stcb->asoc.sent_queue_cnt++;
4837 if (foundeom == 0) {
4839 * Still no eom found. That means there is stuff left on the
4840 * stream out queue.. yuck.
4842 SCTP_TCB_SEND_LOCK(stcb);
4843 strq = &stcb->asoc.strmout[stream];
4844 sp = TAILQ_FIRST(&strq->outqueue);
4846 sp->discard_rest = 1;
4848 * We may need to put a chunk on the queue that
4849 * holds the TSN that would have been sent with the
4853 /* Yep, we have to */
4854 sctp_alloc_a_chunk(stcb, chk);
4857 * we are hosed. All we can do is
4858 * nothing.. which will cause an
4859 * abort if the peer is paying
4864 memset(chk, 0, sizeof(*chk));
4865 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG;
4866 chk->sent = SCTP_FORWARD_TSN_SKIP;
4867 chk->asoc = &stcb->asoc;
4868 chk->rec.data.stream_seq = strq->next_sequence_send;
4869 chk->rec.data.stream_number = sp->stream;
4870 chk->rec.data.payloadtype = sp->ppid;
4871 chk->rec.data.context = sp->context;
4872 chk->flags = sp->act_flags;
4874 chk->whoTo = sp->net;
4876 chk->whoTo = stcb->asoc.primary_destination;
4877 atomic_add_int(&chk->whoTo->ref_count, 1);
4878 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4879 stcb->asoc.pr_sctp_cnt++;
4880 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4881 stcb->asoc.sent_queue_cnt++;
4882 stcb->asoc.pr_sctp_cnt++;
4884 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4886 strq->next_sequence_send++;
4890 * Pull any data to free up the SB and allow
4891 * sender to "add more" while we will throw
4894 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4895 ret_sz += sp->length;
4896 do_wakeup_routine = 1;
4898 sctp_m_freem(sp->data);
4900 sp->tail_mbuf = NULL;
4904 SCTP_TCB_SEND_UNLOCK(stcb);
4906 if (do_wakeup_routine) {
4907 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4910 so = SCTP_INP_SO(stcb->sctp_ep);
4912 atomic_add_int(&stcb->asoc.refcnt, 1);
4913 SCTP_TCB_UNLOCK(stcb);
4914 SCTP_SOCKET_LOCK(so, 1);
4915 SCTP_TCB_LOCK(stcb);
4916 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4917 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4918 /* assoc was freed while we were unlocked */
4919 SCTP_SOCKET_UNLOCK(so, 1);
4924 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4925 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4927 SCTP_SOCKET_UNLOCK(so, 1);
4935 * checks to see if the given address, sa, is one that is currently known by
4936 * the kernel note: can't distinguish the same address on multiple interfaces
4937 * and doesn't handle multiple addresses with different zone/scope id's note:
4938 * ifa_ifwithaddr() compares the entire sockaddr struct
4941 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4944 struct sctp_laddr *laddr;
4946 if (holds_lock == 0) {
4947 SCTP_INP_RLOCK(inp);
4949 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4950 if (laddr->ifa == NULL)
4952 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4955 if (addr->sa_family == AF_INET) {
4956 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4957 laddr->ifa->address.sin.sin_addr.s_addr) {
4959 if (holds_lock == 0) {
4960 SCTP_INP_RUNLOCK(inp);
4962 return (laddr->ifa);
4968 if (addr->sa_family == AF_INET6) {
4969 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4970 &laddr->ifa->address.sin6)) {
4972 if (holds_lock == 0) {
4973 SCTP_INP_RUNLOCK(inp);
4975 return (laddr->ifa);
4981 if (holds_lock == 0) {
4982 SCTP_INP_RUNLOCK(inp);
4988 sctp_get_ifa_hash_val(struct sockaddr *addr)
4990 switch (addr->sa_family) {
4994 struct sockaddr_in *sin;
4996 sin = (struct sockaddr_in *)addr;
4997 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
5003 struct sockaddr_in6 *sin6;
5004 uint32_t hash_of_addr;
5006 sin6 = (struct sockaddr_in6 *)addr;
5007 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5008 sin6->sin6_addr.s6_addr32[1] +
5009 sin6->sin6_addr.s6_addr32[2] +
5010 sin6->sin6_addr.s6_addr32[3]);
5011 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5012 return (hash_of_addr);
5022 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5024 struct sctp_ifa *sctp_ifap;
5025 struct sctp_vrf *vrf;
5026 struct sctp_ifalist *hash_head;
5027 uint32_t hash_of_addr;
5029 if (holds_lock == 0)
5030 SCTP_IPI_ADDR_RLOCK();
5032 vrf = sctp_find_vrf(vrf_id);
5035 if (holds_lock == 0)
5036 SCTP_IPI_ADDR_RUNLOCK();
5039 hash_of_addr = sctp_get_ifa_hash_val(addr);
5041 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5042 if (hash_head == NULL) {
5043 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5044 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
5045 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
5046 sctp_print_address(addr);
5047 SCTP_PRINTF("No such bucket for address\n");
5048 if (holds_lock == 0)
5049 SCTP_IPI_ADDR_RUNLOCK();
5053 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5054 if (sctp_ifap == NULL) {
5056 panic("Huh LIST_FOREACH corrupt");
5059 SCTP_PRINTF("LIST corrupt of sctp_ifap's?\n");
5063 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5066 if (addr->sa_family == AF_INET) {
5067 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5068 sctp_ifap->address.sin.sin_addr.s_addr) {
5070 if (holds_lock == 0)
5071 SCTP_IPI_ADDR_RUNLOCK();
5078 if (addr->sa_family == AF_INET6) {
5079 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5080 &sctp_ifap->address.sin6)) {
5082 if (holds_lock == 0)
5083 SCTP_IPI_ADDR_RUNLOCK();
5090 if (holds_lock == 0)
5091 SCTP_IPI_ADDR_RUNLOCK();
5096 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
5099 /* User pulled some data, do we need a rwnd update? */
5102 struct socket *so = NULL;
5107 atomic_add_int(&stcb->asoc.refcnt, 1);
5109 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5110 SCTP_STATE_SHUTDOWN_RECEIVED |
5111 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5112 /* Pre-check If we are freeing no update */
5115 SCTP_INP_INCR_REF(stcb->sctp_ep);
5116 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5117 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5120 so = stcb->sctp_socket;
5124 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5125 /* Have you have freed enough to look */
5127 /* Yep, its worth a look and the lock overhead */
5129 /* Figure out what the rwnd would be */
5130 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5131 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5132 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5136 if (dif >= rwnd_req) {
5138 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5141 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5143 * One last check before we allow the guy possibly
5144 * to get in. There is a race, where the guy has not
5145 * reached the gate. In that case
5149 SCTP_TCB_LOCK(stcb);
5150 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5151 /* No reports here */
5152 SCTP_TCB_UNLOCK(stcb);
5155 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5156 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5158 sctp_chunk_output(stcb->sctp_ep, stcb,
5159 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5160 /* make sure no timer is running */
5161 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5162 SCTP_TCB_UNLOCK(stcb);
5164 /* Update how much we have pending */
5165 stcb->freed_by_sorcv_sincelast = dif;
5168 if (so && r_unlocked && hold_rlock) {
5169 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5171 SCTP_INP_DECR_REF(stcb->sctp_ep);
5173 atomic_add_int(&stcb->asoc.refcnt, -1);
5178 sctp_sorecvmsg(struct socket *so,
5181 struct sockaddr *from,
5184 struct sctp_sndrcvinfo *sinfo,
5188 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5189 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5190 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5191 * On the way out we may send out any combination of:
5192 * MSG_NOTIFICATION MSG_EOR
5195 struct sctp_inpcb *inp = NULL;
5197 int cp_len = 0, error = 0;
5198 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5199 struct mbuf *m = NULL;
5200 struct sctp_tcb *stcb = NULL;
5201 int wakeup_read_socket = 0;
5202 int freecnt_applied = 0;
5203 int out_flags = 0, in_flags = 0;
5204 int block_allowed = 1;
5205 uint32_t freed_so_far = 0;
5206 uint32_t copied_so_far = 0;
5207 int in_eeor_mode = 0;
5208 int no_rcv_needed = 0;
5209 uint32_t rwnd_req = 0;
5210 int hold_sblock = 0;
5213 uint32_t held_length = 0;
5214 int sockbuf_lock = 0;
5217 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5221 in_flags = *msg_flags;
5222 if (in_flags & MSG_PEEK)
5223 SCTP_STAT_INCR(sctps_read_peeks);
5227 slen = uio->uio_resid;
5229 /* Pull in and set up our int flags */
5230 if (in_flags & MSG_OOB) {
5231 /* Out of band's NOT supported */
5232 return (EOPNOTSUPP);
5234 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5235 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5238 if ((in_flags & (MSG_DONTWAIT
5241 SCTP_SO_IS_NBIO(so)) {
5244 /* setup the endpoint */
5245 inp = (struct sctp_inpcb *)so->so_pcb;
5247 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5250 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5251 /* Must be at least a MTU's worth */
5252 if (rwnd_req < SCTP_MIN_RWND)
5253 rwnd_req = SCTP_MIN_RWND;
5254 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5255 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5256 sctp_misc_ints(SCTP_SORECV_ENTER,
5257 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid);
5259 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5260 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5261 rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid);
5263 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5265 goto release_unlocked;
5272 if (hold_sblock == 0) {
5273 SOCKBUF_LOCK(&so->so_rcv);
5276 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5277 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5280 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5282 error = so->so_error;
5283 if ((in_flags & MSG_PEEK) == 0)
5287 if (so->so_rcv.sb_cc == 0) {
5294 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
5295 /* we need to wait for data */
5296 if ((so->so_rcv.sb_cc == 0) &&
5297 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5298 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5299 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5301 * For active open side clear flags for
5302 * re-use passive open is blocked by
5305 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5307 * You were aborted, passive side
5310 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5313 so->so_state &= ~(SS_ISCONNECTING |
5314 SS_ISDISCONNECTING |
5318 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5319 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5326 error = sbwait(&so->so_rcv);
5331 goto restart_nosblocks;
5332 } else if (so->so_rcv.sb_cc == 0) {
5334 error = so->so_error;
5335 if ((in_flags & MSG_PEEK) == 0)
5338 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5339 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
5340 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5342 * For active open side clear flags
5343 * for re-use passive open is
5344 * blocked by connect.
5346 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5348 * You were aborted, passive
5349 * side always hits here
5351 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5354 so->so_state &= ~(SS_ISCONNECTING |
5355 SS_ISDISCONNECTING |
5359 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5360 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5367 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5368 error = EWOULDBLOCK;
5372 if (hold_sblock == 1) {
5373 SOCKBUF_UNLOCK(&so->so_rcv);
5376 /* we possibly have data we can read */
5377 /* sa_ignore FREED_MEMORY */
5378 control = TAILQ_FIRST(&inp->read_queue);
5379 if (control == NULL) {
5381 * This could be happening since the appender did the
5382 * increment but as not yet did the tailq insert onto the
5385 if (hold_rlock == 0) {
5386 SCTP_INP_READ_LOCK(inp);
5388 control = TAILQ_FIRST(&inp->read_queue);
5389 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5391 panic("Huh, its non zero and nothing on control?");
5393 so->so_rcv.sb_cc = 0;
5395 SCTP_INP_READ_UNLOCK(inp);
5399 if ((control->length == 0) &&
5400 (control->do_not_ref_stcb)) {
5402 * Clean up code for freeing assoc that left behind a
5403 * pdapi.. maybe a peer in EEOR that just closed after
5404 * sending and never indicated a EOR.
5406 if (hold_rlock == 0) {
5408 SCTP_INP_READ_LOCK(inp);
5410 control->held_length = 0;
5411 if (control->data) {
5412 /* Hmm there is data here .. fix */
5416 m_tmp = control->data;
5418 cnt += SCTP_BUF_LEN(m_tmp);
5419 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5420 control->tail_mbuf = m_tmp;
5421 control->end_added = 1;
5423 m_tmp = SCTP_BUF_NEXT(m_tmp);
5425 control->length = cnt;
5428 TAILQ_REMOVE(&inp->read_queue, control, next);
5429 /* Add back any hiddend data */
5430 sctp_free_remote_addr(control->whoFrom);
5431 sctp_free_a_readq(stcb, control);
5435 SCTP_INP_READ_UNLOCK(inp);
5439 if ((control->length == 0) &&
5440 (control->end_added == 1)) {
5442 * Do we also need to check for (control->pdapi_aborted ==
5445 if (hold_rlock == 0) {
5447 SCTP_INP_READ_LOCK(inp);
5449 TAILQ_REMOVE(&inp->read_queue, control, next);
5450 if (control->data) {
5452 panic("control->data not null but control->length == 0");
5454 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5455 sctp_m_freem(control->data);
5456 control->data = NULL;
5459 if (control->aux_data) {
5460 sctp_m_free(control->aux_data);
5461 control->aux_data = NULL;
5463 sctp_free_remote_addr(control->whoFrom);
5464 sctp_free_a_readq(stcb, control);
5467 SCTP_INP_READ_UNLOCK(inp);
5471 if (control->length == 0) {
5472 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5474 /* find a more suitable one then this */
5475 ctl = TAILQ_NEXT(control, next);
5477 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5479 (ctl->spec_flags & M_NOTIFICATION) ||
5480 ((ctl->do_not_ref_stcb == 0) &&
5481 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5484 * If we have a different TCB next, and there is data
5485 * present. If we have already taken some (pdapi), OR we can
5486 * ref the tcb and no delivery as started on this stream, we
5487 * take it. Note we allow a notification on a different
5488 * assoc to be delivered..
5492 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5494 ((ctl->some_taken) ||
5495 ((ctl->do_not_ref_stcb == 0) &&
5496 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5497 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5499 * If we have the same tcb, and there is data present, and we
5500 * have the strm interleave feature present. Then if we have
5501 * taken some (pdapi) or we can refer to tht tcb AND we have
5502 * not started a delivery for this stream, we can take it.
5503 * Note we do NOT allow a notificaiton on the same assoc to
5509 ctl = TAILQ_NEXT(ctl, next);
5513 * if we reach here, not suitable replacement is available
5514 * <or> fragment interleave is NOT on. So stuff the sb_cc
5515 * into the our held count, and its time to sleep again.
5517 held_length = so->so_rcv.sb_cc;
5518 control->held_length = so->so_rcv.sb_cc;
5521 /* Clear the held length since there is something to read */
5522 control->held_length = 0;
5524 SCTP_INP_READ_UNLOCK(inp);
5529 * If we reach here, control has a some data for us to read off.
5530 * Note that stcb COULD be NULL.
5532 control->some_taken++;
5534 SOCKBUF_UNLOCK(&so->so_rcv);
5537 stcb = control->stcb;
5539 if ((control->do_not_ref_stcb == 0) &&
5540 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5541 if (freecnt_applied == 0)
5543 } else if (control->do_not_ref_stcb == 0) {
5544 /* you can't free it on me please */
5546 * The lock on the socket buffer protects us so the
5547 * free code will stop. But since we used the
5548 * socketbuf lock and the sender uses the tcb_lock
5549 * to increment, we need to use the atomic add to
5552 if (freecnt_applied) {
5554 panic("refcnt already incremented");
5556 SCTP_PRINTF("refcnt already incremented?\n");
5559 atomic_add_int(&stcb->asoc.refcnt, 1);
5560 freecnt_applied = 1;
5563 * Setup to remember how much we have not yet told
5564 * the peer our rwnd has opened up. Note we grab the
5565 * value from the tcb from last time. Note too that
5566 * sack sending clears this when a sack is sent,
5567 * which is fine. Once we hit the rwnd_req, we then
5568 * will go to the sctp_user_rcvd() that will not
5569 * lock until it KNOWs it MUST send a WUP-SACK.
5571 freed_so_far = stcb->freed_by_sorcv_sincelast;
5572 stcb->freed_by_sorcv_sincelast = 0;
5576 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5577 control->do_not_ref_stcb == 0) {
5578 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5580 /* First lets get off the sinfo and sockaddr info */
5581 if ((sinfo) && filling_sinfo) {
5582 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo));
5583 nxt = TAILQ_NEXT(control, next);
5584 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5585 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5586 struct sctp_extrcvinfo *s_extra;
5588 s_extra = (struct sctp_extrcvinfo *)sinfo;
5591 s_extra->sreinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5592 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5593 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5595 if (nxt->spec_flags & M_NOTIFICATION) {
5596 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5598 s_extra->sreinfo_next_aid = nxt->sinfo_assoc_id;
5599 s_extra->sreinfo_next_length = nxt->length;
5600 s_extra->sreinfo_next_ppid = nxt->sinfo_ppid;
5601 s_extra->sreinfo_next_stream = nxt->sinfo_stream;
5602 if (nxt->tail_mbuf != NULL) {
5603 if (nxt->end_added) {
5604 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5609 * we explicitly 0 this, since the memcpy
5610 * got some other things beyond the older
5611 * sinfo_ that is on the control's structure
5615 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
5616 s_extra->sreinfo_next_aid = 0;
5617 s_extra->sreinfo_next_length = 0;
5618 s_extra->sreinfo_next_ppid = 0;
5619 s_extra->sreinfo_next_stream = 0;
5623 * update off the real current cum-ack, if we have an stcb.
5625 if ((control->do_not_ref_stcb == 0) && stcb)
5626 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5628 * mask off the high bits, we keep the actual chunk bits in
5631 sinfo->sinfo_flags &= 0x00ff;
5632 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5633 sinfo->sinfo_flags |= SCTP_UNORDERED;
5636 #ifdef SCTP_ASOCLOG_OF_TSNS
5638 int index, newindex;
5639 struct sctp_pcbtsn_rlog *entry;
5642 index = inp->readlog_index;
5643 newindex = index + 1;
5644 if (newindex >= SCTP_READ_LOG_SIZE) {
5647 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5648 entry = &inp->readlog[index];
5649 entry->vtag = control->sinfo_assoc_id;
5650 entry->strm = control->sinfo_stream;
5651 entry->seq = control->sinfo_ssn;
5652 entry->sz = control->length;
5653 entry->flgs = control->sinfo_flags;
5656 if (fromlen && from) {
5657 cp_len = min((size_t)fromlen, (size_t)control->whoFrom->ro._l_addr.sa.sa_len);
5658 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5661 ((struct sockaddr_in6 *)from)->sin6_port = control->port_from;
5666 ((struct sockaddr_in *)from)->sin_port = control->port_from;
5672 memcpy(from, &control->whoFrom->ro._l_addr, cp_len);
5674 #if defined(INET) && defined(INET6)
5675 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) &&
5676 (from->sa_family == AF_INET) &&
5677 ((size_t)fromlen >= sizeof(struct sockaddr_in6))) {
5678 struct sockaddr_in *sin;
5679 struct sockaddr_in6 sin6;
5681 sin = (struct sockaddr_in *)from;
5682 bzero(&sin6, sizeof(sin6));
5683 sin6.sin6_family = AF_INET6;
5684 sin6.sin6_len = sizeof(struct sockaddr_in6);
5685 sin6.sin6_addr.s6_addr32[2] = htonl(0xffff);
5686 bcopy(&sin->sin_addr,
5687 &sin6.sin6_addr.s6_addr32[3],
5688 sizeof(sin6.sin6_addr.s6_addr32[3]));
5689 sin6.sin6_port = sin->sin_port;
5690 memcpy(from, &sin6, sizeof(struct sockaddr_in6));
5695 struct sockaddr_in6 lsa6, *from6;
5697 from6 = (struct sockaddr_in6 *)from;
5698 sctp_recover_scope_mac(from6, (&lsa6));
5702 /* now copy out what data we can */
5704 /* copy out each mbuf in the chain up to length */
5708 /* Move out all we can */
5709 cp_len = (int)uio->uio_resid;
5710 my_len = (int)SCTP_BUF_LEN(m);
5711 if (cp_len > my_len) {
5712 /* not enough in this buf */
5716 SCTP_INP_READ_UNLOCK(inp);
5720 error = uiomove(mtod(m, char *), cp_len, uio);
5722 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5725 if ((control->do_not_ref_stcb == 0) && stcb &&
5726 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5730 /* error we are out of here */
5733 if ((SCTP_BUF_NEXT(m) == NULL) &&
5734 (cp_len >= SCTP_BUF_LEN(m)) &&
5735 ((control->end_added == 0) ||
5736 (control->end_added &&
5737 (TAILQ_NEXT(control, next) == NULL)))
5739 SCTP_INP_READ_LOCK(inp);
5742 if (cp_len == SCTP_BUF_LEN(m)) {
5743 if ((SCTP_BUF_NEXT(m) == NULL) &&
5744 (control->end_added)) {
5745 out_flags |= MSG_EOR;
5746 if ((control->do_not_ref_stcb == 0) &&
5747 (control->stcb != NULL) &&
5748 ((control->spec_flags & M_NOTIFICATION) == 0))
5749 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5751 if (control->spec_flags & M_NOTIFICATION) {
5752 out_flags |= MSG_NOTIFICATION;
5754 /* we ate up the mbuf */
5755 if (in_flags & MSG_PEEK) {
5757 m = SCTP_BUF_NEXT(m);
5758 copied_so_far += cp_len;
5760 /* dispose of the mbuf */
5761 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5762 sctp_sblog(&so->so_rcv,
5763 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5765 sctp_sbfree(control, stcb, &so->so_rcv, m);
5766 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5767 sctp_sblog(&so->so_rcv,
5768 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5770 copied_so_far += cp_len;
5771 freed_so_far += cp_len;
5772 freed_so_far += MSIZE;
5773 atomic_subtract_int(&control->length, cp_len);
5774 control->data = sctp_m_free(m);
5777 * been through it all, must hold sb
5778 * lock ok to null tail
5780 if (control->data == NULL) {
5782 if ((control->end_added == 0) ||
5783 (TAILQ_NEXT(control, next) == NULL)) {
5791 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5792 panic("Hmm we don't own the lock?");
5796 control->tail_mbuf = NULL;
5798 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5799 panic("end_added, nothing left and no MSG_EOR");
5805 /* Do we need to trim the mbuf? */
5806 if (control->spec_flags & M_NOTIFICATION) {
5807 out_flags |= MSG_NOTIFICATION;
5809 if ((in_flags & MSG_PEEK) == 0) {
5810 SCTP_BUF_RESV_UF(m, cp_len);
5811 SCTP_BUF_LEN(m) -= cp_len;
5812 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5813 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5815 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5816 if ((control->do_not_ref_stcb == 0) &&
5818 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5820 copied_so_far += cp_len;
5821 freed_so_far += cp_len;
5822 freed_so_far += MSIZE;
5823 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5824 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5825 SCTP_LOG_SBRESULT, 0);
5827 atomic_subtract_int(&control->length, cp_len);
5829 copied_so_far += cp_len;
5832 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5835 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5836 (control->do_not_ref_stcb == 0) &&
5837 (freed_so_far >= rwnd_req)) {
5838 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5840 } /* end while(m) */
5842 * At this point we have looked at it all and we either have
5843 * a MSG_EOR/or read all the user wants... <OR>
5844 * control->length == 0.
5846 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5847 /* we are done with this control */
5848 if (control->length == 0) {
5849 if (control->data) {
5851 panic("control->data not null at read eor?");
5853 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5854 sctp_m_freem(control->data);
5855 control->data = NULL;
5859 if (TAILQ_NEXT(control, next) == NULL) {
5861 * If we don't have a next we need a
5862 * lock, if there is a next
5863 * interrupt is filling ahead of us
5864 * and we don't need a lock to
5865 * remove this guy (which is the
5866 * head of the queue).
5868 if (hold_rlock == 0) {
5869 SCTP_INP_READ_LOCK(inp);
5873 TAILQ_REMOVE(&inp->read_queue, control, next);
5874 /* Add back any hiddend data */
5875 if (control->held_length) {
5877 control->held_length = 0;
5878 wakeup_read_socket = 1;
5880 if (control->aux_data) {
5881 sctp_m_free(control->aux_data);
5882 control->aux_data = NULL;
5884 no_rcv_needed = control->do_not_ref_stcb;
5885 sctp_free_remote_addr(control->whoFrom);
5886 control->data = NULL;
5887 sctp_free_a_readq(stcb, control);
5889 if ((freed_so_far >= rwnd_req) &&
5890 (no_rcv_needed == 0))
5891 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5895 * The user did not read all of this
5896 * message, turn off the returned MSG_EOR
5897 * since we are leaving more behind on the
5901 if (control->end_added &&
5902 (control->data == NULL) &&
5903 (control->tail_mbuf == NULL)) {
5904 panic("Gak, control->length is corrupt?");
5907 no_rcv_needed = control->do_not_ref_stcb;
5908 out_flags &= ~MSG_EOR;
5911 if (out_flags & MSG_EOR) {
5914 if ((uio->uio_resid == 0) ||
5916 (copied_so_far >= (uint32_t) max(so->so_rcv.sb_lowat, 1)))) {
5920 * If I hit here the receiver wants more and this message is
5921 * NOT done (pd-api). So two questions. Can we block? if not
5922 * we are done. Did the user NOT set MSG_WAITALL?
5924 if (block_allowed == 0) {
5928 * We need to wait for more data a few things: - We don't
5929 * sbunlock() so we don't get someone else reading. - We
5930 * must be sure to account for the case where what is added
5931 * is NOT to our control when we wakeup.
5935 * Do we need to tell the transport a rwnd update might be
5936 * needed before we go to sleep?
5938 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5939 ((freed_so_far >= rwnd_req) &&
5940 (control->do_not_ref_stcb == 0) &&
5941 (no_rcv_needed == 0))) {
5942 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5945 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5948 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5951 if (hold_rlock == 1) {
5952 SCTP_INP_READ_UNLOCK(inp);
5955 if (hold_sblock == 0) {
5956 SOCKBUF_LOCK(&so->so_rcv);
5959 if ((copied_so_far) && (control->length == 0) &&
5960 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5963 if (so->so_rcv.sb_cc <= control->held_length) {
5964 error = sbwait(&so->so_rcv);
5968 control->held_length = 0;
5971 SOCKBUF_UNLOCK(&so->so_rcv);
5974 if (control->length == 0) {
5975 /* still nothing here */
5976 if (control->end_added == 1) {
5977 /* he aborted, or is done i.e.did a shutdown */
5978 out_flags |= MSG_EOR;
5979 if (control->pdapi_aborted) {
5980 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5981 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5983 out_flags |= MSG_TRUNC;
5985 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5986 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5988 goto done_with_control;
5990 if (so->so_rcv.sb_cc > held_length) {
5991 control->held_length = so->so_rcv.sb_cc;
5994 goto wait_some_more;
5995 } else if (control->data == NULL) {
5997 * we must re-sync since data is probably being
6000 SCTP_INP_READ_LOCK(inp);
6001 if ((control->length > 0) && (control->data == NULL)) {
6003 * big trouble.. we have the lock and its
6007 panic("Impossible data==NULL length !=0");
6009 out_flags |= MSG_EOR;
6010 out_flags |= MSG_TRUNC;
6011 control->length = 0;
6012 SCTP_INP_READ_UNLOCK(inp);
6013 goto done_with_control;
6015 SCTP_INP_READ_UNLOCK(inp);
6016 /* We will fall around to get more data */
6021 * Give caller back the mbuf chain,
6022 * store in uio_resid the length
6024 wakeup_read_socket = 0;
6025 if ((control->end_added == 0) ||
6026 (TAILQ_NEXT(control, next) == NULL)) {
6027 /* Need to get rlock */
6028 if (hold_rlock == 0) {
6029 SCTP_INP_READ_LOCK(inp);
6033 if (control->end_added) {
6034 out_flags |= MSG_EOR;
6035 if ((control->do_not_ref_stcb == 0) &&
6036 (control->stcb != NULL) &&
6037 ((control->spec_flags & M_NOTIFICATION) == 0))
6038 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6040 if (control->spec_flags & M_NOTIFICATION) {
6041 out_flags |= MSG_NOTIFICATION;
6043 uio->uio_resid = control->length;
6044 *mp = control->data;
6047 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6048 sctp_sblog(&so->so_rcv,
6049 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6051 sctp_sbfree(control, stcb, &so->so_rcv, m);
6052 freed_so_far += SCTP_BUF_LEN(m);
6053 freed_so_far += MSIZE;
6054 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6055 sctp_sblog(&so->so_rcv,
6056 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6058 m = SCTP_BUF_NEXT(m);
6060 control->data = control->tail_mbuf = NULL;
6061 control->length = 0;
6062 if (out_flags & MSG_EOR) {
6063 /* Done with this control */
6064 goto done_with_control;
6068 if (hold_rlock == 1) {
6069 SCTP_INP_READ_UNLOCK(inp);
6072 if (hold_sblock == 1) {
6073 SOCKBUF_UNLOCK(&so->so_rcv);
6076 sbunlock(&so->so_rcv);
6081 SOCKBUF_UNLOCK(&so->so_rcv);
6084 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6085 if ((freed_so_far >= rwnd_req) &&
6086 (control && (control->do_not_ref_stcb == 0)) &&
6087 (no_rcv_needed == 0))
6088 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6092 *msg_flags = out_flags;
6094 if (((out_flags & MSG_EOR) == 0) &&
6095 ((in_flags & MSG_PEEK) == 0) &&
6097 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6098 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6099 struct sctp_extrcvinfo *s_extra;
6101 s_extra = (struct sctp_extrcvinfo *)sinfo;
6102 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
6104 if (hold_rlock == 1) {
6105 SCTP_INP_READ_UNLOCK(inp);
6108 SOCKBUF_UNLOCK(&so->so_rcv);
6111 sbunlock(&so->so_rcv);
6113 if (freecnt_applied) {
6115 * The lock on the socket buffer protects us so the free
6116 * code will stop. But since we used the socketbuf lock and
6117 * the sender uses the tcb_lock to increment, we need to use
6118 * the atomic add to the refcnt.
6122 panic("stcb for refcnt has gone NULL?");
6128 atomic_add_int(&stcb->asoc.refcnt, -1);
6129 /* Save the value back for next time */
6130 stcb->freed_by_sorcv_sincelast = freed_so_far;
6132 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6134 sctp_misc_ints(SCTP_SORECV_DONE,
6136 ((uio) ? (slen - uio->uio_resid) : slen),
6140 sctp_misc_ints(SCTP_SORECV_DONE,
6142 ((uio) ? (slen - uio->uio_resid) : slen),
6148 if (wakeup_read_socket) {
6149 sctp_sorwakeup(inp, so);
6155 #ifdef SCTP_MBUF_LOGGING
6157 sctp_m_free(struct mbuf *m)
6159 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6160 if (SCTP_BUF_IS_EXTENDED(m)) {
6161 sctp_log_mb(m, SCTP_MBUF_IFREE);
6168 sctp_m_freem(struct mbuf *mb)
6171 mb = sctp_m_free(mb);
6177 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6180 * Given a local address. For all associations that holds the
6181 * address, request a peer-set-primary.
6183 struct sctp_ifa *ifa;
6184 struct sctp_laddr *wi;
6186 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6188 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6189 return (EADDRNOTAVAIL);
6192 * Now that we have the ifa we must awaken the iterator with this
6195 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6197 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6200 /* Now incr the count and int wi structure */
6201 SCTP_INCR_LADDR_COUNT();
6202 bzero(wi, sizeof(*wi));
6203 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6205 wi->action = SCTP_SET_PRIM_ADDR;
6206 atomic_add_int(&ifa->refcount, 1);
6208 /* Now add it to the work queue */
6209 SCTP_WQ_ADDR_LOCK();
6211 * Should this really be a tailq? As it is we will process the
6214 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6215 SCTP_WQ_ADDR_UNLOCK();
6216 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6217 (struct sctp_inpcb *)NULL,
6218 (struct sctp_tcb *)NULL,
6219 (struct sctp_nets *)NULL);
6225 sctp_soreceive(struct socket *so,
6226 struct sockaddr **psa,
6229 struct mbuf **controlp,
6233 uint8_t sockbuf[256];
6234 struct sockaddr *from;
6235 struct sctp_extrcvinfo sinfo;
6236 int filling_sinfo = 1;
6237 struct sctp_inpcb *inp;
6239 inp = (struct sctp_inpcb *)so->so_pcb;
6240 /* pickup the assoc we are reading from */
6242 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6245 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6246 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6247 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6248 (controlp == NULL)) {
6249 /* user does not want the sndrcv ctl */
6253 from = (struct sockaddr *)sockbuf;
6254 fromlen = sizeof(sockbuf);
6261 if (filling_sinfo) {
6262 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6264 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6265 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6266 if (controlp != NULL) {
6267 /* copy back the sinfo in a CMSG format */
6269 *controlp = sctp_build_ctl_nchunk(inp,
6270 (struct sctp_sndrcvinfo *)&sinfo);
6275 /* copy back the address info */
6276 if (from && from->sa_len) {
6277 *psa = sodupsockaddr(from, M_NOWAIT);
6290 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6291 int totaddr, int *error)
6295 struct sctp_inpcb *inp;
6296 struct sockaddr *sa;
6300 struct sockaddr_in *sin;
6304 struct sockaddr_in6 *sin6;
6309 inp = stcb->sctp_ep;
6311 for (i = 0; i < totaddr; i++) {
6312 switch (sa->sa_family) {
6315 incr = sizeof(struct sockaddr_in);
6316 sin = (struct sockaddr_in *)sa;
6317 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6318 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6319 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6320 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6321 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6325 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6326 /* assoc gone no un-lock */
6327 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6328 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6337 incr = sizeof(struct sockaddr_in6);
6338 sin6 = (struct sockaddr_in6 *)sa;
6339 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6340 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6341 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6342 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6346 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6347 /* assoc gone no un-lock */
6348 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6349 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6359 sa = (struct sockaddr *)((caddr_t)sa + incr);
6366 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6367 int *totaddr, int *num_v4, int *num_v6, int *error,
6368 int limit, int *bad_addr)
6370 struct sockaddr *sa;
6371 struct sctp_tcb *stcb = NULL;
6377 *error = *num_v6 = *num_v4 = 0;
6378 /* account and validate addresses */
6379 for (i = 0; i < (size_t)*totaddr; i++) {
6380 switch (sa->sa_family) {
6384 incr = sizeof(struct sockaddr_in);
6385 if (sa->sa_len != incr) {
6386 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6396 struct sockaddr_in6 *sin6;
6398 sin6 = (struct sockaddr_in6 *)sa;
6399 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6400 /* Must be non-mapped for connectx */
6401 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6407 incr = sizeof(struct sockaddr_in6);
6408 if (sa->sa_len != incr) {
6409 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6422 if (i == (size_t)*totaddr) {
6425 SCTP_INP_INCR_REF(inp);
6426 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6428 /* Already have or am bring up an association */
6431 SCTP_INP_DECR_REF(inp);
6433 if ((at + incr) > (size_t)limit) {
6437 sa = (struct sockaddr *)((caddr_t)sa + incr);
6439 return ((struct sctp_tcb *)NULL);
6443 * sctp_bindx(ADD) for one address.
6444 * assumes all arguments are valid/checked by caller.
6447 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6448 struct sockaddr *sa, sctp_assoc_t assoc_id,
6449 uint32_t vrf_id, int *error, void *p)
6451 struct sockaddr *addr_touse;
6454 struct sockaddr_in sin;
6458 /* see if we're bound all already! */
6459 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6460 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6466 if (sa->sa_family == AF_INET6) {
6467 struct sockaddr_in6 *sin6;
6469 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6470 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6474 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6475 /* can only bind v6 on PF_INET6 sockets */
6476 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6480 sin6 = (struct sockaddr_in6 *)addr_touse;
6481 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6482 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6483 SCTP_IPV6_V6ONLY(inp)) {
6484 /* can't bind v4-mapped on PF_INET sockets */
6485 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6489 in6_sin6_2_sin(&sin, sin6);
6490 addr_touse = (struct sockaddr *)&sin;
6495 if (sa->sa_family == AF_INET) {
6496 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6497 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6501 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6502 SCTP_IPV6_V6ONLY(inp)) {
6503 /* can't bind v4 on PF_INET sockets */
6504 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6510 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6512 /* Can't get proc for Net/Open BSD */
6513 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6517 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6521 * No locks required here since bind and mgmt_ep_sa all do their own
6522 * locking. If we do something for the FIX: below we may need to
6523 * lock in that case.
6525 if (assoc_id == 0) {
6526 /* add the address */
6527 struct sctp_inpcb *lep;
6528 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6530 /* validate the incoming port */
6531 if ((lsin->sin_port != 0) &&
6532 (lsin->sin_port != inp->sctp_lport)) {
6533 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6537 /* user specified 0 port, set it to existing port */
6538 lsin->sin_port = inp->sctp_lport;
6541 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6544 * We must decrement the refcount since we have the
6545 * ep already and are binding. No remove going on
6548 SCTP_INP_DECR_REF(lep);
6551 /* already bound to it.. ok */
6553 } else if (lep == NULL) {
6554 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6555 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6556 SCTP_ADD_IP_ADDRESS,
6559 *error = EADDRINUSE;
6565 * FIX: decide whether we allow assoc based bindx
6571 * sctp_bindx(DELETE) for one address.
6572 * assumes all arguments are valid/checked by caller.
6575 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6576 struct sockaddr *sa, sctp_assoc_t assoc_id,
6577 uint32_t vrf_id, int *error)
6579 struct sockaddr *addr_touse;
6582 struct sockaddr_in sin;
6586 /* see if we're bound all already! */
6587 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6588 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6594 if (sa->sa_family == AF_INET6) {
6595 struct sockaddr_in6 *sin6;
6597 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6598 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6602 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6603 /* can only bind v6 on PF_INET6 sockets */
6604 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6608 sin6 = (struct sockaddr_in6 *)addr_touse;
6609 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6610 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6611 SCTP_IPV6_V6ONLY(inp)) {
6612 /* can't bind mapped-v4 on PF_INET sockets */
6613 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6617 in6_sin6_2_sin(&sin, sin6);
6618 addr_touse = (struct sockaddr *)&sin;
6623 if (sa->sa_family == AF_INET) {
6624 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6625 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6629 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6630 SCTP_IPV6_V6ONLY(inp)) {
6631 /* can't bind v4 on PF_INET sockets */
6632 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6639 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6640 * below is ever changed we may need to lock before calling
6641 * association level binding.
6643 if (assoc_id == 0) {
6644 /* delete the address */
6645 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6646 SCTP_DEL_IP_ADDRESS,
6650 * FIX: decide whether we allow assoc based bindx
6656 * returns the valid local address count for an assoc, taking into account
6660 sctp_local_addr_count(struct sctp_tcb *stcb)
6665 int ipv4_local_scope, ipv4_addr_legal;
6669 int local_scope, site_scope, ipv6_addr_legal;
6672 struct sctp_vrf *vrf;
6673 struct sctp_ifn *sctp_ifn;
6674 struct sctp_ifa *sctp_ifa;
6677 /* Turn on all the appropriate scopes */
6678 loopback_scope = stcb->asoc.scope.loopback_scope;
6680 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6681 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6684 local_scope = stcb->asoc.scope.local_scope;
6685 site_scope = stcb->asoc.scope.site_scope;
6686 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6688 SCTP_IPI_ADDR_RLOCK();
6689 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6691 /* no vrf, no addresses */
6692 SCTP_IPI_ADDR_RUNLOCK();
6695 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6697 * bound all case: go through all ifns on the vrf
6699 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6700 if ((loopback_scope == 0) &&
6701 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6704 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6705 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6707 switch (sctp_ifa->address.sa.sa_family) {
6710 if (ipv4_addr_legal) {
6711 struct sockaddr_in *sin;
6713 sin = &sctp_ifa->address.sin;
6714 if (sin->sin_addr.s_addr == 0) {
6721 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6722 &sin->sin_addr) != 0) {
6725 if ((ipv4_local_scope == 0) &&
6726 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6729 /* count this one */
6738 if (ipv6_addr_legal) {
6739 struct sockaddr_in6 *sin6;
6741 sin6 = &sctp_ifa->address.sin6;
6742 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6745 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6746 &sin6->sin6_addr) != 0) {
6749 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6750 if (local_scope == 0)
6752 if (sin6->sin6_scope_id == 0) {
6753 if (sa6_recoverscope(sin6) != 0)
6771 if ((site_scope == 0) &&
6772 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6775 /* count this one */
6790 struct sctp_laddr *laddr;
6792 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6794 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6797 /* count this one */
6801 SCTP_IPI_ADDR_RUNLOCK();
6805 #if defined(SCTP_LOCAL_TRACE_BUF)
6808 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)
6810 uint32_t saveindex, newindex;
6813 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6814 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6817 newindex = saveindex + 1;
6819 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6820 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6823 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6824 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6825 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6826 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6827 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6828 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6829 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6830 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6835 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *ignored)
6840 struct ip6_hdr *ip6;
6843 struct mbuf *sp, *last;
6844 struct udphdr *uhdr;
6847 if ((m->m_flags & M_PKTHDR) == 0) {
6848 /* Can't handle one that is not a pkt hdr */
6851 /* Pull the src port */
6852 iph = mtod(m, struct ip *);
6853 uhdr = (struct udphdr *)((caddr_t)iph + off);
6854 port = uhdr->uh_sport;
6856 * Split out the mbuf chain. Leave the IP header in m, place the
6859 sp = m_split(m, off, M_NOWAIT);
6861 /* Gak, drop packet, we can't do a split */
6864 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6865 /* Gak, packet can't have an SCTP header in it - too small */
6869 /* Now pull up the UDP header and SCTP header together */
6870 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6872 /* Gak pullup failed */
6875 /* Trim out the UDP header */
6876 m_adj(sp, sizeof(struct udphdr));
6878 /* Now reconstruct the mbuf chain */
6879 for (last = m; last->m_next; last = last->m_next);
6881 m->m_pkthdr.len += sp->m_pkthdr.len;
6882 iph = mtod(m, struct ip *);
6883 switch (iph->ip_v) {
6886 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
6887 sctp_input_with_port(m, off, port);
6891 case IPV6_VERSION >> 4:
6892 ip6 = mtod(m, struct ip6_hdr *);
6893 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
6894 sctp6_input_with_port(&m, &off, port);
6907 sctp_over_udp_stop(void)
6910 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6914 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
6915 soclose(SCTP_BASE_INFO(udp4_tun_socket));
6916 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
6920 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
6921 soclose(SCTP_BASE_INFO(udp6_tun_socket));
6922 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
6928 sctp_over_udp_start(void)
6934 struct sockaddr_in sin;
6938 struct sockaddr_in6 sin6;
6942 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6945 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
6946 if (ntohs(port) == 0) {
6947 /* Must have a port set */
6951 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
6952 /* Already running -- must stop first */
6957 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
6958 /* Already running -- must stop first */
6963 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
6964 SOCK_DGRAM, IPPROTO_UDP,
6965 curthread->td_ucred, curthread))) {
6966 sctp_over_udp_stop();
6969 /* Call the special UDP hook. */
6970 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
6971 sctp_recv_udp_tunneled_packet))) {
6972 sctp_over_udp_stop();
6975 /* Ok, we have a socket, bind it to the port. */
6976 memset(&sin, 0, sizeof(struct sockaddr_in));
6977 sin.sin_len = sizeof(struct sockaddr_in);
6978 sin.sin_family = AF_INET;
6979 sin.sin_port = htons(port);
6980 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
6981 (struct sockaddr *)&sin, curthread))) {
6982 sctp_over_udp_stop();
6987 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
6988 SOCK_DGRAM, IPPROTO_UDP,
6989 curthread->td_ucred, curthread))) {
6990 sctp_over_udp_stop();
6993 /* Call the special UDP hook. */
6994 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
6995 sctp_recv_udp_tunneled_packet))) {
6996 sctp_over_udp_stop();
6999 /* Ok, we have a socket, bind it to the port. */
7000 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7001 sin6.sin6_len = sizeof(struct sockaddr_in6);
7002 sin6.sin6_family = AF_INET6;
7003 sin6.sin6_port = htons(port);
7004 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7005 (struct sockaddr *)&sin6, curthread))) {
7006 sctp_over_udp_stop();