2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions are met:
9 * a) Redistributions of source code must retain the above copyright notice,
10 * this list of conditions and the following disclaimer.
12 * b) Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the distribution.
16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/cdefs.h>
34 __FBSDID("$FreeBSD$");
36 #include <netinet/sctp_os.h>
37 #include <netinet/sctp_pcb.h>
38 #include <netinet/sctputil.h>
39 #include <netinet/sctp_var.h>
40 #include <netinet/sctp_sysctl.h>
42 #include <netinet6/sctp6_var.h>
44 #include <netinet/sctp_header.h>
45 #include <netinet/sctp_output.h>
46 #include <netinet/sctp_uio.h>
47 #include <netinet/sctp_timer.h>
48 #include <netinet/sctp_indata.h>/* for sctp_deliver_data() */
49 #include <netinet/sctp_auth.h>
50 #include <netinet/sctp_asconf.h>
51 #include <netinet/sctp_bsd_addr.h>
52 #include <netinet/udp.h>
53 #include <netinet/udp_var.h>
56 #include <netinet/icmp6.h>
61 #define KTR_SCTP KTR_SUBSYS
64 extern const struct sctp_cc_functions sctp_cc_functions[];
65 extern const struct sctp_ss_functions sctp_ss_functions[];
68 sctp_sblog(struct sockbuf *sb, struct sctp_tcb *stcb, int from, int incr)
70 struct sctp_cwnd_log sctp_clog;
72 sctp_clog.x.sb.stcb = stcb;
73 sctp_clog.x.sb.so_sbcc = sb->sb_cc;
75 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
77 sctp_clog.x.sb.stcb_sbcc = 0;
78 sctp_clog.x.sb.incr = incr;
79 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
82 sctp_clog.x.misc.log1,
83 sctp_clog.x.misc.log2,
84 sctp_clog.x.misc.log3,
85 sctp_clog.x.misc.log4);
89 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
91 struct sctp_cwnd_log sctp_clog;
93 sctp_clog.x.close.inp = (void *)inp;
94 sctp_clog.x.close.sctp_flags = inp->sctp_flags;
96 sctp_clog.x.close.stcb = (void *)stcb;
97 sctp_clog.x.close.state = (uint16_t)stcb->asoc.state;
99 sctp_clog.x.close.stcb = 0;
100 sctp_clog.x.close.state = 0;
102 sctp_clog.x.close.loc = loc;
103 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
104 SCTP_LOG_EVENT_CLOSE,
106 sctp_clog.x.misc.log1,
107 sctp_clog.x.misc.log2,
108 sctp_clog.x.misc.log3,
109 sctp_clog.x.misc.log4);
113 rto_logging(struct sctp_nets *net, int from)
115 struct sctp_cwnd_log sctp_clog;
117 memset(&sctp_clog, 0, sizeof(sctp_clog));
118 sctp_clog.x.rto.net = (void *)net;
119 sctp_clog.x.rto.rtt = net->rtt / 1000;
120 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
123 sctp_clog.x.misc.log1,
124 sctp_clog.x.misc.log2,
125 sctp_clog.x.misc.log3,
126 sctp_clog.x.misc.log4);
130 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
132 struct sctp_cwnd_log sctp_clog;
134 sctp_clog.x.strlog.stcb = stcb;
135 sctp_clog.x.strlog.n_tsn = tsn;
136 sctp_clog.x.strlog.n_sseq = sseq;
137 sctp_clog.x.strlog.e_tsn = 0;
138 sctp_clog.x.strlog.e_sseq = 0;
139 sctp_clog.x.strlog.strm = stream;
140 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
143 sctp_clog.x.misc.log1,
144 sctp_clog.x.misc.log2,
145 sctp_clog.x.misc.log3,
146 sctp_clog.x.misc.log4);
150 sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
152 struct sctp_cwnd_log sctp_clog;
154 sctp_clog.x.nagle.stcb = (void *)stcb;
155 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
156 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
157 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
158 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
159 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
160 SCTP_LOG_EVENT_NAGLE,
162 sctp_clog.x.misc.log1,
163 sctp_clog.x.misc.log2,
164 sctp_clog.x.misc.log3,
165 sctp_clog.x.misc.log4);
169 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
171 struct sctp_cwnd_log sctp_clog;
173 sctp_clog.x.sack.cumack = cumack;
174 sctp_clog.x.sack.oldcumack = old_cumack;
175 sctp_clog.x.sack.tsn = tsn;
176 sctp_clog.x.sack.numGaps = gaps;
177 sctp_clog.x.sack.numDups = dups;
178 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
181 sctp_clog.x.misc.log1,
182 sctp_clog.x.misc.log2,
183 sctp_clog.x.misc.log3,
184 sctp_clog.x.misc.log4);
188 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
190 struct sctp_cwnd_log sctp_clog;
192 memset(&sctp_clog, 0, sizeof(sctp_clog));
193 sctp_clog.x.map.base = map;
194 sctp_clog.x.map.cum = cum;
195 sctp_clog.x.map.high = high;
196 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
199 sctp_clog.x.misc.log1,
200 sctp_clog.x.misc.log2,
201 sctp_clog.x.misc.log3,
202 sctp_clog.x.misc.log4);
206 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn, int from)
208 struct sctp_cwnd_log sctp_clog;
210 memset(&sctp_clog, 0, sizeof(sctp_clog));
211 sctp_clog.x.fr.largest_tsn = biggest_tsn;
212 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
213 sctp_clog.x.fr.tsn = tsn;
214 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
217 sctp_clog.x.misc.log1,
218 sctp_clog.x.misc.log2,
219 sctp_clog.x.misc.log3,
220 sctp_clog.x.misc.log4);
223 #ifdef SCTP_MBUF_LOGGING
225 sctp_log_mb(struct mbuf *m, int from)
227 struct sctp_cwnd_log sctp_clog;
229 sctp_clog.x.mb.mp = m;
230 sctp_clog.x.mb.mbuf_flags = (uint8_t)(SCTP_BUF_GET_FLAGS(m));
231 sctp_clog.x.mb.size = (uint16_t)(SCTP_BUF_LEN(m));
232 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
233 if (SCTP_BUF_IS_EXTENDED(m)) {
234 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
235 sctp_clog.x.mb.refcnt = (uint8_t)(SCTP_BUF_EXTEND_REFCNT(m));
237 sctp_clog.x.mb.ext = 0;
238 sctp_clog.x.mb.refcnt = 0;
240 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
243 sctp_clog.x.misc.log1,
244 sctp_clog.x.misc.log2,
245 sctp_clog.x.misc.log3,
246 sctp_clog.x.misc.log4);
250 sctp_log_mbc(struct mbuf *m, int from)
254 for (mat = m; mat; mat = SCTP_BUF_NEXT(mat)) {
255 sctp_log_mb(mat, from);
261 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk, int from)
263 struct sctp_cwnd_log sctp_clog;
265 if (control == NULL) {
266 SCTP_PRINTF("Gak log of NULL?\n");
269 sctp_clog.x.strlog.stcb = control->stcb;
270 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
271 sctp_clog.x.strlog.n_sseq = (uint16_t)control->mid;
272 sctp_clog.x.strlog.strm = control->sinfo_stream;
273 if (poschk != NULL) {
274 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
275 sctp_clog.x.strlog.e_sseq = (uint16_t)poschk->mid;
277 sctp_clog.x.strlog.e_tsn = 0;
278 sctp_clog.x.strlog.e_sseq = 0;
280 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
283 sctp_clog.x.misc.log1,
284 sctp_clog.x.misc.log2,
285 sctp_clog.x.misc.log3,
286 sctp_clog.x.misc.log4);
290 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
292 struct sctp_cwnd_log sctp_clog;
294 sctp_clog.x.cwnd.net = net;
295 if (stcb->asoc.send_queue_cnt > 255)
296 sctp_clog.x.cwnd.cnt_in_send = 255;
298 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
299 if (stcb->asoc.stream_queue_cnt > 255)
300 sctp_clog.x.cwnd.cnt_in_str = 255;
302 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
305 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
306 sctp_clog.x.cwnd.inflight = net->flight_size;
307 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
308 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
309 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
311 if (SCTP_CWNDLOG_PRESEND == from) {
312 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
314 sctp_clog.x.cwnd.cwnd_augment = augment;
315 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
318 sctp_clog.x.misc.log1,
319 sctp_clog.x.misc.log2,
320 sctp_clog.x.misc.log3,
321 sctp_clog.x.misc.log4);
325 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
327 struct sctp_cwnd_log sctp_clog;
329 memset(&sctp_clog, 0, sizeof(sctp_clog));
331 sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
334 sctp_clog.x.lock.sock = (void *)NULL;
336 sctp_clog.x.lock.inp = (void *)inp;
338 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
340 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
343 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
344 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
346 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
347 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
349 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
350 if (inp && (inp->sctp_socket)) {
351 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
352 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
353 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
355 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
356 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
357 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
359 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
362 sctp_clog.x.misc.log1,
363 sctp_clog.x.misc.log2,
364 sctp_clog.x.misc.log3,
365 sctp_clog.x.misc.log4);
369 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
371 struct sctp_cwnd_log sctp_clog;
373 memset(&sctp_clog, 0, sizeof(sctp_clog));
374 sctp_clog.x.cwnd.net = net;
375 sctp_clog.x.cwnd.cwnd_new_value = error;
376 sctp_clog.x.cwnd.inflight = net->flight_size;
377 sctp_clog.x.cwnd.cwnd_augment = burst;
378 if (stcb->asoc.send_queue_cnt > 255)
379 sctp_clog.x.cwnd.cnt_in_send = 255;
381 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
382 if (stcb->asoc.stream_queue_cnt > 255)
383 sctp_clog.x.cwnd.cnt_in_str = 255;
385 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
386 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
387 SCTP_LOG_EVENT_MAXBURST,
389 sctp_clog.x.misc.log1,
390 sctp_clog.x.misc.log2,
391 sctp_clog.x.misc.log3,
392 sctp_clog.x.misc.log4);
396 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
398 struct sctp_cwnd_log sctp_clog;
400 sctp_clog.x.rwnd.rwnd = peers_rwnd;
401 sctp_clog.x.rwnd.send_size = snd_size;
402 sctp_clog.x.rwnd.overhead = overhead;
403 sctp_clog.x.rwnd.new_rwnd = 0;
404 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
407 sctp_clog.x.misc.log1,
408 sctp_clog.x.misc.log2,
409 sctp_clog.x.misc.log3,
410 sctp_clog.x.misc.log4);
414 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
416 struct sctp_cwnd_log sctp_clog;
418 sctp_clog.x.rwnd.rwnd = peers_rwnd;
419 sctp_clog.x.rwnd.send_size = flight_size;
420 sctp_clog.x.rwnd.overhead = overhead;
421 sctp_clog.x.rwnd.new_rwnd = a_rwndval;
422 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
425 sctp_clog.x.misc.log1,
426 sctp_clog.x.misc.log2,
427 sctp_clog.x.misc.log3,
428 sctp_clog.x.misc.log4);
431 #ifdef SCTP_MBCNT_LOGGING
433 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
435 struct sctp_cwnd_log sctp_clog;
437 sctp_clog.x.mbcnt.total_queue_size = total_oq;
438 sctp_clog.x.mbcnt.size_change = book;
439 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
440 sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
441 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
442 SCTP_LOG_EVENT_MBCNT,
444 sctp_clog.x.misc.log1,
445 sctp_clog.x.misc.log2,
446 sctp_clog.x.misc.log3,
447 sctp_clog.x.misc.log4);
452 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
454 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
461 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from)
463 struct sctp_cwnd_log sctp_clog;
465 sctp_clog.x.wake.stcb = (void *)stcb;
466 sctp_clog.x.wake.wake_cnt = wake_cnt;
467 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
468 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
469 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
471 if (stcb->asoc.stream_queue_cnt < 0xff)
472 sctp_clog.x.wake.stream_qcnt = (uint8_t)stcb->asoc.stream_queue_cnt;
474 sctp_clog.x.wake.stream_qcnt = 0xff;
476 if (stcb->asoc.chunks_on_out_queue < 0xff)
477 sctp_clog.x.wake.chunks_on_oque = (uint8_t)stcb->asoc.chunks_on_out_queue;
479 sctp_clog.x.wake.chunks_on_oque = 0xff;
481 sctp_clog.x.wake.sctpflags = 0;
482 /* set in the defered mode stuff */
483 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
484 sctp_clog.x.wake.sctpflags |= 1;
485 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
486 sctp_clog.x.wake.sctpflags |= 2;
487 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
488 sctp_clog.x.wake.sctpflags |= 4;
489 /* what about the sb */
490 if (stcb->sctp_socket) {
491 struct socket *so = stcb->sctp_socket;
493 sctp_clog.x.wake.sbflags = (uint8_t)((so->so_snd.sb_flags & 0x00ff));
495 sctp_clog.x.wake.sbflags = 0xff;
497 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
500 sctp_clog.x.misc.log1,
501 sctp_clog.x.misc.log2,
502 sctp_clog.x.misc.log3,
503 sctp_clog.x.misc.log4);
507 sctp_log_block(uint8_t from, struct sctp_association *asoc, size_t sendlen)
509 struct sctp_cwnd_log sctp_clog;
511 sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
512 sctp_clog.x.blk.send_sent_qcnt = (uint16_t)(asoc->send_queue_cnt + asoc->sent_queue_cnt);
513 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
514 sctp_clog.x.blk.stream_qcnt = (uint16_t)asoc->stream_queue_cnt;
515 sctp_clog.x.blk.chunks_on_oque = (uint16_t)asoc->chunks_on_out_queue;
516 sctp_clog.x.blk.flight_size = (uint16_t)(asoc->total_flight / 1024);
517 sctp_clog.x.blk.sndlen = (uint32_t)sendlen;
518 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
519 SCTP_LOG_EVENT_BLOCK,
521 sctp_clog.x.misc.log1,
522 sctp_clog.x.misc.log2,
523 sctp_clog.x.misc.log3,
524 sctp_clog.x.misc.log4);
528 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
530 /* May need to fix this if ktrdump does not work */
534 #ifdef SCTP_AUDITING_ENABLED
535 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
536 static int sctp_audit_indx = 0;
540 sctp_print_audit_report(void)
546 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
547 if ((sctp_audit_data[i][0] == 0xe0) &&
548 (sctp_audit_data[i][1] == 0x01)) {
551 } else if (sctp_audit_data[i][0] == 0xf0) {
554 } else if ((sctp_audit_data[i][0] == 0xc0) &&
555 (sctp_audit_data[i][1] == 0x01)) {
559 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
560 (uint32_t)sctp_audit_data[i][1]);
565 for (i = 0; i < sctp_audit_indx; i++) {
566 if ((sctp_audit_data[i][0] == 0xe0) &&
567 (sctp_audit_data[i][1] == 0x01)) {
570 } else if (sctp_audit_data[i][0] == 0xf0) {
573 } else if ((sctp_audit_data[i][0] == 0xc0) &&
574 (sctp_audit_data[i][1] == 0x01)) {
578 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t)sctp_audit_data[i][0],
579 (uint32_t)sctp_audit_data[i][1]);
588 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
589 struct sctp_nets *net)
591 int resend_cnt, tot_out, rep, tot_book_cnt;
592 struct sctp_nets *lnet;
593 struct sctp_tmit_chunk *chk;
595 sctp_audit_data[sctp_audit_indx][0] = 0xAA;
596 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
598 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
602 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
603 sctp_audit_data[sctp_audit_indx][1] = 0x01;
605 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
611 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
612 sctp_audit_data[sctp_audit_indx][1] = 0x02;
614 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
619 sctp_audit_data[sctp_audit_indx][0] = 0xA1;
620 sctp_audit_data[sctp_audit_indx][1] =
621 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
623 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
628 resend_cnt = tot_out = 0;
629 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
630 if (chk->sent == SCTP_DATAGRAM_RESEND) {
632 } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
633 tot_out += chk->book_size;
637 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
638 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
639 sctp_audit_data[sctp_audit_indx][1] = 0xA1;
641 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
644 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
645 resend_cnt, stcb->asoc.sent_queue_retran_cnt);
647 stcb->asoc.sent_queue_retran_cnt = resend_cnt;
648 sctp_audit_data[sctp_audit_indx][0] = 0xA2;
649 sctp_audit_data[sctp_audit_indx][1] =
650 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
652 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
656 if (tot_out != stcb->asoc.total_flight) {
657 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
658 sctp_audit_data[sctp_audit_indx][1] = 0xA2;
660 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
664 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
665 (int)stcb->asoc.total_flight);
666 stcb->asoc.total_flight = tot_out;
668 if (tot_book_cnt != stcb->asoc.total_flight_count) {
669 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
670 sctp_audit_data[sctp_audit_indx][1] = 0xA5;
672 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
676 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
678 stcb->asoc.total_flight_count = tot_book_cnt;
681 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
682 tot_out += lnet->flight_size;
684 if (tot_out != stcb->asoc.total_flight) {
685 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
686 sctp_audit_data[sctp_audit_indx][1] = 0xA3;
688 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
692 SCTP_PRINTF("real flight:%d net total was %d\n",
693 stcb->asoc.total_flight, tot_out);
694 /* now corrective action */
695 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
698 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
699 if ((chk->whoTo == lnet) &&
700 (chk->sent < SCTP_DATAGRAM_RESEND)) {
701 tot_out += chk->book_size;
704 if (lnet->flight_size != tot_out) {
705 SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
706 (void *)lnet, lnet->flight_size,
708 lnet->flight_size = tot_out;
713 sctp_print_audit_report();
718 sctp_audit_log(uint8_t ev, uint8_t fd)
721 sctp_audit_data[sctp_audit_indx][0] = ev;
722 sctp_audit_data[sctp_audit_indx][1] = fd;
724 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
732 * sctp_stop_timers_for_shutdown() should be called
733 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
734 * state to make sure that all timers are stopped.
737 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
739 struct sctp_association *asoc;
740 struct sctp_nets *net;
744 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
745 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
746 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
747 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
748 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
749 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
750 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
751 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
756 * a list of sizes based on typical mtu's, used only if next hop size not
759 static uint32_t sctp_mtu_sizes[] = {
781 * Return the largest MTU smaller than val. If there is no
782 * entry, just return val.
785 sctp_get_prev_mtu(uint32_t val)
789 if (val <= sctp_mtu_sizes[0]) {
792 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
793 if (val <= sctp_mtu_sizes[i]) {
797 return (sctp_mtu_sizes[i - 1]);
801 * Return the smallest MTU larger than val. If there is no
802 * entry, just return val.
805 sctp_get_next_mtu(uint32_t val)
807 /* select another MTU that is just bigger than this one */
810 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
811 if (val < sctp_mtu_sizes[i]) {
812 return (sctp_mtu_sizes[i]);
819 sctp_fill_random_store(struct sctp_pcb *m)
822 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
823 * our counter. The result becomes our good random numbers and we
824 * then setup to give these out. Note that we do no locking to
825 * protect this. This is ok, since if competing folks call this we
826 * will get more gobbled gook in the random store which is what we
827 * want. There is a danger that two guys will use the same random
828 * numbers, but thats ok too since that is random as well :->
831 (void)sctp_hmac(SCTP_HMAC, (uint8_t *)m->random_numbers,
832 sizeof(m->random_numbers), (uint8_t *)&m->random_counter,
833 sizeof(m->random_counter), (uint8_t *)m->random_store);
838 sctp_select_initial_TSN(struct sctp_pcb *inp)
841 * A true implementation should use random selection process to get
842 * the initial stream sequence number, using RFC1750 as a good
847 int store_at, new_store;
849 if (inp->initial_sequence_debug != 0) {
852 ret = inp->initial_sequence_debug;
853 inp->initial_sequence_debug++;
857 store_at = inp->store_at;
858 new_store = store_at + sizeof(uint32_t);
859 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
862 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
865 if (new_store == 0) {
866 /* Refill the random store */
867 sctp_fill_random_store(inp);
869 p = &inp->random_store[store_at];
876 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
882 (void)SCTP_GETTIME_TIMEVAL(&now);
885 x = sctp_select_initial_TSN(&inp->sctp_ep);
890 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
898 sctp_map_assoc_state(int kernel_state)
902 if (kernel_state & SCTP_STATE_WAS_ABORTED) {
903 user_state = SCTP_CLOSED;
904 } else if (kernel_state & SCTP_STATE_SHUTDOWN_PENDING) {
905 user_state = SCTP_SHUTDOWN_PENDING;
907 switch (kernel_state & SCTP_STATE_MASK) {
908 case SCTP_STATE_EMPTY:
909 user_state = SCTP_CLOSED;
911 case SCTP_STATE_INUSE:
912 user_state = SCTP_CLOSED;
914 case SCTP_STATE_COOKIE_WAIT:
915 user_state = SCTP_COOKIE_WAIT;
917 case SCTP_STATE_COOKIE_ECHOED:
918 user_state = SCTP_COOKIE_ECHOED;
920 case SCTP_STATE_OPEN:
921 user_state = SCTP_ESTABLISHED;
923 case SCTP_STATE_SHUTDOWN_SENT:
924 user_state = SCTP_SHUTDOWN_SENT;
926 case SCTP_STATE_SHUTDOWN_RECEIVED:
927 user_state = SCTP_SHUTDOWN_RECEIVED;
929 case SCTP_STATE_SHUTDOWN_ACK_SENT:
930 user_state = SCTP_SHUTDOWN_ACK_SENT;
933 user_state = SCTP_CLOSED;
941 sctp_init_asoc(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
942 uint32_t override_tag, uint32_t vrf_id, uint16_t o_strms)
944 struct sctp_association *asoc;
947 * Anything set to zero is taken care of by the allocation routine's
952 * Up front select what scoping to apply on addresses I tell my peer
953 * Not sure what to do with these right now, we will need to come up
954 * with a way to set them. We may need to pass them through from the
955 * caller in the sctp_aloc_assoc() function.
958 #if defined(SCTP_DETAILED_STR_STATS)
963 /* init all variables to a known value. */
964 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
965 asoc->max_burst = inp->sctp_ep.max_burst;
966 asoc->fr_max_burst = inp->sctp_ep.fr_max_burst;
967 asoc->heart_beat_delay = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
968 asoc->cookie_life = inp->sctp_ep.def_cookie_life;
969 asoc->sctp_cmt_on_off = inp->sctp_cmt_on_off;
970 asoc->ecn_supported = inp->ecn_supported;
971 asoc->prsctp_supported = inp->prsctp_supported;
972 asoc->idata_supported = inp->idata_supported;
973 asoc->auth_supported = inp->auth_supported;
974 asoc->asconf_supported = inp->asconf_supported;
975 asoc->reconfig_supported = inp->reconfig_supported;
976 asoc->nrsack_supported = inp->nrsack_supported;
977 asoc->pktdrop_supported = inp->pktdrop_supported;
978 asoc->idata_supported = inp->idata_supported;
979 asoc->sctp_cmt_pf = (uint8_t)0;
980 asoc->sctp_frag_point = inp->sctp_frag_point;
981 asoc->sctp_features = inp->sctp_features;
982 asoc->default_dscp = inp->sctp_ep.default_dscp;
983 asoc->max_cwnd = inp->max_cwnd;
985 if (inp->sctp_ep.default_flowlabel) {
986 asoc->default_flowlabel = inp->sctp_ep.default_flowlabel;
988 if (inp->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
989 asoc->default_flowlabel = sctp_select_initial_TSN(&inp->sctp_ep);
990 asoc->default_flowlabel &= 0x000fffff;
991 asoc->default_flowlabel |= 0x80000000;
993 asoc->default_flowlabel = 0;
997 asoc->sb_send_resv = 0;
999 asoc->my_vtag = override_tag;
1001 asoc->my_vtag = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
1003 /* Get the nonce tags */
1004 asoc->my_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1005 asoc->peer_vtag_nonce = sctp_select_a_tag(inp, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
1006 asoc->vrf_id = vrf_id;
1008 #ifdef SCTP_ASOCLOG_OF_TSNS
1009 asoc->tsn_in_at = 0;
1010 asoc->tsn_out_at = 0;
1011 asoc->tsn_in_wrapped = 0;
1012 asoc->tsn_out_wrapped = 0;
1013 asoc->cumack_log_at = 0;
1014 asoc->cumack_log_atsnt = 0;
1016 #ifdef SCTP_FS_SPEC_LOG
1020 asoc->assoc_up_sent = 0;
1021 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
1022 sctp_select_initial_TSN(&inp->sctp_ep);
1023 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
1024 /* we are optimisitic here */
1025 asoc->peer_supports_nat = 0;
1026 asoc->sent_queue_retran_cnt = 0;
1029 asoc->last_net_cmt_send_started = NULL;
1031 /* This will need to be adjusted */
1032 asoc->last_acked_seq = asoc->init_seq_number - 1;
1033 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
1034 asoc->asconf_seq_in = asoc->last_acked_seq;
1036 /* here we are different, we hold the next one we expect */
1037 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
1039 asoc->initial_init_rto_max = inp->sctp_ep.initial_init_rto_max;
1040 asoc->initial_rto = inp->sctp_ep.initial_rto;
1042 asoc->max_init_times = inp->sctp_ep.max_init_times;
1043 asoc->max_send_times = inp->sctp_ep.max_send_times;
1044 asoc->def_net_failure = inp->sctp_ep.def_net_failure;
1045 asoc->def_net_pf_threshold = inp->sctp_ep.def_net_pf_threshold;
1046 asoc->free_chunk_cnt = 0;
1048 asoc->iam_blocking = 0;
1049 asoc->context = inp->sctp_context;
1050 asoc->local_strreset_support = inp->local_strreset_support;
1051 asoc->def_send = inp->def_send;
1052 asoc->delayed_ack = TICKS_TO_MSEC(inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
1053 asoc->sack_freq = inp->sctp_ep.sctp_sack_freq;
1054 asoc->pr_sctp_cnt = 0;
1055 asoc->total_output_queue_size = 0;
1057 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
1058 asoc->scope.ipv6_addr_legal = 1;
1059 if (SCTP_IPV6_V6ONLY(inp) == 0) {
1060 asoc->scope.ipv4_addr_legal = 1;
1062 asoc->scope.ipv4_addr_legal = 0;
1065 asoc->scope.ipv6_addr_legal = 0;
1066 asoc->scope.ipv4_addr_legal = 1;
1069 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(inp->sctp_socket), SCTP_MINIMAL_RWND);
1070 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(inp->sctp_socket);
1072 asoc->smallest_mtu = inp->sctp_frag_point;
1073 asoc->minrto = inp->sctp_ep.sctp_minrto;
1074 asoc->maxrto = inp->sctp_ep.sctp_maxrto;
1076 asoc->stream_locked_on = 0;
1077 asoc->ecn_echo_cnt_onq = 0;
1078 asoc->stream_locked = 0;
1080 asoc->send_sack = 1;
1082 LIST_INIT(&asoc->sctp_restricted_addrs);
1084 TAILQ_INIT(&asoc->nets);
1085 TAILQ_INIT(&asoc->pending_reply_queue);
1086 TAILQ_INIT(&asoc->asconf_ack_sent);
1087 /* Setup to fill the hb random cache at first HB */
1088 asoc->hb_random_idx = 4;
1090 asoc->sctp_autoclose_ticks = inp->sctp_ep.auto_close_time;
1092 stcb->asoc.congestion_control_module = inp->sctp_ep.sctp_default_cc_module;
1093 stcb->asoc.cc_functions = sctp_cc_functions[inp->sctp_ep.sctp_default_cc_module];
1095 stcb->asoc.stream_scheduling_module = inp->sctp_ep.sctp_default_ss_module;
1096 stcb->asoc.ss_functions = sctp_ss_functions[inp->sctp_ep.sctp_default_ss_module];
1099 * Now the stream parameters, here we allocate space for all streams
1100 * that we request by default.
1102 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1104 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1105 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1107 if (asoc->strmout == NULL) {
1108 /* big trouble no memory */
1109 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1112 for (i = 0; i < asoc->streamoutcnt; i++) {
1114 * inbound side must be set to 0xffff, also NOTE when we get
1115 * the INIT-ACK back (for INIT sender) we MUST reduce the
1116 * count (streamoutcnt) but first check if we sent to any of
1117 * the upper streams that were dropped (if some were). Those
1118 * that were dropped must be notified to the upper layer as
1121 asoc->strmout[i].next_mid_ordered = 0;
1122 asoc->strmout[i].next_mid_unordered = 0;
1123 TAILQ_INIT(&asoc->strmout[i].outqueue);
1124 asoc->strmout[i].chunks_on_queues = 0;
1125 #if defined(SCTP_DETAILED_STR_STATS)
1126 for (j = 0; j < SCTP_PR_SCTP_MAX + 1; j++) {
1127 asoc->strmout[i].abandoned_sent[j] = 0;
1128 asoc->strmout[i].abandoned_unsent[j] = 0;
1131 asoc->strmout[i].abandoned_sent[0] = 0;
1132 asoc->strmout[i].abandoned_unsent[0] = 0;
1134 asoc->strmout[i].sid = i;
1135 asoc->strmout[i].last_msg_incomplete = 0;
1136 asoc->strmout[i].state = SCTP_STREAM_OPENING;
1137 asoc->ss_functions.sctp_ss_init_stream(stcb, &asoc->strmout[i], NULL);
1139 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1141 /* Now the mapping array */
1142 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1143 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1145 if (asoc->mapping_array == NULL) {
1146 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1147 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1150 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1151 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1153 if (asoc->nr_mapping_array == NULL) {
1154 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1155 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1156 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1159 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1161 /* Now the init of the other outqueues */
1162 TAILQ_INIT(&asoc->free_chunks);
1163 TAILQ_INIT(&asoc->control_send_queue);
1164 TAILQ_INIT(&asoc->asconf_send_queue);
1165 TAILQ_INIT(&asoc->send_queue);
1166 TAILQ_INIT(&asoc->sent_queue);
1167 TAILQ_INIT(&asoc->resetHead);
1168 asoc->max_inbound_streams = inp->sctp_ep.max_open_streams_intome;
1169 TAILQ_INIT(&asoc->asconf_queue);
1170 /* authentication fields */
1171 asoc->authinfo.random = NULL;
1172 asoc->authinfo.active_keyid = 0;
1173 asoc->authinfo.assoc_key = NULL;
1174 asoc->authinfo.assoc_keyid = 0;
1175 asoc->authinfo.recv_key = NULL;
1176 asoc->authinfo.recv_keyid = 0;
1177 LIST_INIT(&asoc->shared_keys);
1178 asoc->marked_retrans = 0;
1179 asoc->port = inp->sctp_ep.port;
1183 asoc->timoshutdown = 0;
1184 asoc->timoheartbeat = 0;
1185 asoc->timocookie = 0;
1186 asoc->timoshutdownack = 0;
1187 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1188 asoc->discontinuity_time = asoc->start_time;
1189 for (i = 0; i < SCTP_PR_SCTP_MAX + 1; i++) {
1190 asoc->abandoned_unsent[i] = 0;
1191 asoc->abandoned_sent[i] = 0;
1194 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1195 * freed later when the association is freed.
1201 sctp_print_mapping_array(struct sctp_association *asoc)
1203 unsigned int i, limit;
1205 SCTP_PRINTF("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1206 asoc->mapping_array_size,
1207 asoc->mapping_array_base_tsn,
1208 asoc->cumulative_tsn,
1209 asoc->highest_tsn_inside_map,
1210 asoc->highest_tsn_inside_nr_map);
1211 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1212 if (asoc->mapping_array[limit - 1] != 0) {
1216 SCTP_PRINTF("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1217 for (i = 0; i < limit; i++) {
1218 SCTP_PRINTF("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1222 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1223 if (asoc->nr_mapping_array[limit - 1]) {
1227 SCTP_PRINTF("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1228 for (i = 0; i < limit; i++) {
1229 SCTP_PRINTF("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1236 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1238 /* mapping array needs to grow */
1239 uint8_t *new_array1, *new_array2;
1242 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1243 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1244 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1245 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1246 /* can't get more, forget it */
1247 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1249 SCTP_FREE(new_array1, SCTP_M_MAP);
1252 SCTP_FREE(new_array2, SCTP_M_MAP);
1256 memset(new_array1, 0, new_size);
1257 memset(new_array2, 0, new_size);
1258 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1259 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1260 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1261 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1262 asoc->mapping_array = new_array1;
1263 asoc->nr_mapping_array = new_array2;
1264 asoc->mapping_array_size = new_size;
1270 sctp_iterator_work(struct sctp_iterator *it)
1272 int iteration_count = 0;
1275 struct sctp_inpcb *tinp;
1277 SCTP_INP_INFO_RLOCK();
1278 SCTP_ITERATOR_LOCK();
1279 sctp_it_ctl.cur_it = it;
1281 SCTP_INP_RLOCK(it->inp);
1282 SCTP_INP_DECR_REF(it->inp);
1284 if (it->inp == NULL) {
1285 /* iterator is complete */
1287 sctp_it_ctl.cur_it = NULL;
1288 SCTP_ITERATOR_UNLOCK();
1289 SCTP_INP_INFO_RUNLOCK();
1290 if (it->function_atend != NULL) {
1291 (*it->function_atend) (it->pointer, it->val);
1293 SCTP_FREE(it, SCTP_M_ITER);
1300 SCTP_INP_RLOCK(it->inp);
1302 while (((it->pcb_flags) &&
1303 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1304 ((it->pcb_features) &&
1305 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1306 /* endpoint flags or features don't match, so keep looking */
1307 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1308 SCTP_INP_RUNLOCK(it->inp);
1309 goto done_with_iterator;
1312 it->inp = LIST_NEXT(it->inp, sctp_list);
1313 SCTP_INP_RUNLOCK(tinp);
1314 if (it->inp == NULL) {
1315 goto done_with_iterator;
1317 SCTP_INP_RLOCK(it->inp);
1319 /* now go through each assoc which is in the desired state */
1320 if (it->done_current_ep == 0) {
1321 if (it->function_inp != NULL)
1322 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1323 it->done_current_ep = 1;
1325 if (it->stcb == NULL) {
1326 /* run the per instance function */
1327 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1329 if ((inp_skip) || it->stcb == NULL) {
1330 if (it->function_inp_end != NULL) {
1331 inp_skip = (*it->function_inp_end) (it->inp,
1335 SCTP_INP_RUNLOCK(it->inp);
1339 SCTP_TCB_LOCK(it->stcb);
1340 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1341 /* not in the right state... keep looking */
1342 SCTP_TCB_UNLOCK(it->stcb);
1345 /* see if we have limited out the iterator loop */
1347 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1348 /* Pause to let others grab the lock */
1349 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1350 SCTP_TCB_UNLOCK(it->stcb);
1351 SCTP_INP_INCR_REF(it->inp);
1352 SCTP_INP_RUNLOCK(it->inp);
1353 SCTP_ITERATOR_UNLOCK();
1354 SCTP_INP_INFO_RUNLOCK();
1355 SCTP_INP_INFO_RLOCK();
1356 SCTP_ITERATOR_LOCK();
1357 if (sctp_it_ctl.iterator_flags) {
1358 /* We won't be staying here */
1359 SCTP_INP_DECR_REF(it->inp);
1360 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1361 if (sctp_it_ctl.iterator_flags &
1362 SCTP_ITERATOR_STOP_CUR_IT) {
1363 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1364 goto done_with_iterator;
1366 if (sctp_it_ctl.iterator_flags &
1367 SCTP_ITERATOR_STOP_CUR_INP) {
1368 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1371 /* If we reach here huh? */
1372 SCTP_PRINTF("Unknown it ctl flag %x\n",
1373 sctp_it_ctl.iterator_flags);
1374 sctp_it_ctl.iterator_flags = 0;
1376 SCTP_INP_RLOCK(it->inp);
1377 SCTP_INP_DECR_REF(it->inp);
1378 SCTP_TCB_LOCK(it->stcb);
1379 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1380 iteration_count = 0;
1382 /* run function on this one */
1383 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1386 * we lie here, it really needs to have its own type but
1387 * first I must verify that this won't effect things :-0
1389 if (it->no_chunk_output == 0)
1390 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1392 SCTP_TCB_UNLOCK(it->stcb);
1394 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1395 if (it->stcb == NULL) {
1396 /* Run last function */
1397 if (it->function_inp_end != NULL) {
1398 inp_skip = (*it->function_inp_end) (it->inp,
1404 SCTP_INP_RUNLOCK(it->inp);
1406 /* done with all assocs on this endpoint, move on to next endpoint */
1407 it->done_current_ep = 0;
1408 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1411 it->inp = LIST_NEXT(it->inp, sctp_list);
1413 if (it->inp == NULL) {
1414 goto done_with_iterator;
1416 goto select_a_new_ep;
1420 sctp_iterator_worker(void)
1422 struct sctp_iterator *it, *nit;
1424 /* This function is called with the WQ lock in place */
1426 sctp_it_ctl.iterator_running = 1;
1427 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1428 /* now lets work on this one */
1429 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1430 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1431 CURVNET_SET(it->vn);
1432 sctp_iterator_work(it);
1434 SCTP_IPI_ITERATOR_WQ_LOCK();
1435 /* sa_ignore FREED_MEMORY */
1437 sctp_it_ctl.iterator_running = 0;
1443 sctp_handle_addr_wq(void)
1445 /* deal with the ADDR wq from the rtsock calls */
1446 struct sctp_laddr *wi, *nwi;
1447 struct sctp_asconf_iterator *asc;
1449 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1450 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1452 /* Try later, no memory */
1453 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1454 (struct sctp_inpcb *)NULL,
1455 (struct sctp_tcb *)NULL,
1456 (struct sctp_nets *)NULL);
1459 LIST_INIT(&asc->list_of_work);
1462 SCTP_WQ_ADDR_LOCK();
1463 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1464 LIST_REMOVE(wi, sctp_nxt_addr);
1465 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1468 SCTP_WQ_ADDR_UNLOCK();
1470 if (asc->cnt == 0) {
1471 SCTP_FREE(asc, SCTP_M_ASC_IT);
1475 ret = sctp_initiate_iterator(sctp_asconf_iterator_ep,
1476 sctp_asconf_iterator_stcb,
1477 NULL, /* No ep end for boundall */
1478 SCTP_PCB_FLAGS_BOUNDALL,
1479 SCTP_PCB_ANY_FEATURES,
1480 SCTP_ASOC_ANY_STATE,
1482 sctp_asconf_iterator_end, NULL, 0);
1484 SCTP_PRINTF("Failed to initiate iterator for handle_addr_wq\n");
1486 * Freeing if we are stopping or put back on the
1489 if (SCTP_BASE_VAR(sctp_pcb_initialized) == 0) {
1490 sctp_asconf_iterator_end(asc, 0);
1492 SCTP_WQ_ADDR_LOCK();
1493 LIST_FOREACH(wi, &asc->list_of_work, sctp_nxt_addr) {
1494 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
1496 SCTP_WQ_ADDR_UNLOCK();
1497 SCTP_FREE(asc, SCTP_M_ASC_IT);
1504 sctp_timeout_handler(void *t)
1506 struct sctp_inpcb *inp;
1507 struct sctp_tcb *stcb;
1508 struct sctp_nets *net;
1509 struct sctp_timer *tmr;
1510 struct mbuf *op_err;
1511 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1517 tmr = (struct sctp_timer *)t;
1518 inp = (struct sctp_inpcb *)tmr->ep;
1519 stcb = (struct sctp_tcb *)tmr->tcb;
1520 net = (struct sctp_nets *)tmr->net;
1521 CURVNET_SET((struct vnet *)tmr->vnet);
1524 #ifdef SCTP_AUDITING_ENABLED
1525 sctp_audit_log(0xF0, (uint8_t)tmr->type);
1526 sctp_auditing(3, inp, stcb, net);
1529 /* sanity checks... */
1530 if (tmr->self != (void *)tmr) {
1532 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1538 tmr->stopped_from = 0xa001;
1539 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1541 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1547 tmr->stopped_from = 0xa002;
1548 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1552 /* if this is an iterator timeout, get the struct and clear inp */
1553 tmr->stopped_from = 0xa003;
1555 SCTP_INP_INCR_REF(inp);
1556 if ((inp->sctp_socket == NULL) &&
1557 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1558 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1559 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1560 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1561 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1562 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1563 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1564 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1565 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1567 SCTP_INP_DECR_REF(inp);
1572 tmr->stopped_from = 0xa004;
1574 atomic_add_int(&stcb->asoc.refcnt, 1);
1575 if (stcb->asoc.state == 0) {
1576 atomic_add_int(&stcb->asoc.refcnt, -1);
1578 SCTP_INP_DECR_REF(inp);
1585 tmr->stopped_from = 0xa005;
1586 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", type);
1587 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1589 SCTP_INP_DECR_REF(inp);
1592 atomic_add_int(&stcb->asoc.refcnt, -1);
1597 tmr->stopped_from = 0xa006;
1600 SCTP_TCB_LOCK(stcb);
1601 atomic_add_int(&stcb->asoc.refcnt, -1);
1602 if ((type != SCTP_TIMER_TYPE_ASOCKILL) &&
1603 ((stcb->asoc.state == 0) ||
1604 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1605 SCTP_TCB_UNLOCK(stcb);
1607 SCTP_INP_DECR_REF(inp);
1613 /* record in stopped what t-o occurred */
1614 tmr->stopped_from = type;
1616 /* mark as being serviced now */
1617 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1619 * Callout has been rescheduled.
1623 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1625 * Not active, so no action.
1629 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1631 /* call the handler for the appropriate timer type */
1633 case SCTP_TIMER_TYPE_ZERO_COPY:
1637 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1638 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1641 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1645 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1646 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1649 case SCTP_TIMER_TYPE_ADDR_WQ:
1650 sctp_handle_addr_wq();
1652 case SCTP_TIMER_TYPE_SEND:
1653 if ((stcb == NULL) || (inp == NULL)) {
1656 SCTP_STAT_INCR(sctps_timodata);
1657 stcb->asoc.timodata++;
1658 stcb->asoc.num_send_timers_up--;
1659 if (stcb->asoc.num_send_timers_up < 0) {
1660 stcb->asoc.num_send_timers_up = 0;
1662 SCTP_TCB_LOCK_ASSERT(stcb);
1663 if (sctp_t3rxt_timer(inp, stcb, net)) {
1664 /* no need to unlock on tcb its gone */
1668 SCTP_TCB_LOCK_ASSERT(stcb);
1669 #ifdef SCTP_AUDITING_ENABLED
1670 sctp_auditing(4, inp, stcb, net);
1672 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1673 if ((stcb->asoc.num_send_timers_up == 0) &&
1674 (stcb->asoc.sent_queue_cnt > 0)) {
1675 struct sctp_tmit_chunk *chk;
1678 * safeguard. If there on some on the sent queue
1679 * somewhere but no timers running something is
1680 * wrong... so we start a timer on the first chunk
1681 * on the send queue on whatever net it is sent to.
1683 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1684 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1688 case SCTP_TIMER_TYPE_INIT:
1689 if ((stcb == NULL) || (inp == NULL)) {
1692 SCTP_STAT_INCR(sctps_timoinit);
1693 stcb->asoc.timoinit++;
1694 if (sctp_t1init_timer(inp, stcb, net)) {
1695 /* no need to unlock on tcb its gone */
1698 /* We do output but not here */
1701 case SCTP_TIMER_TYPE_RECV:
1702 if ((stcb == NULL) || (inp == NULL)) {
1705 SCTP_STAT_INCR(sctps_timosack);
1706 stcb->asoc.timosack++;
1707 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1708 #ifdef SCTP_AUDITING_ENABLED
1709 sctp_auditing(4, inp, stcb, net);
1711 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1713 case SCTP_TIMER_TYPE_SHUTDOWN:
1714 if ((stcb == NULL) || (inp == NULL)) {
1717 if (sctp_shutdown_timer(inp, stcb, net)) {
1718 /* no need to unlock on tcb its gone */
1721 SCTP_STAT_INCR(sctps_timoshutdown);
1722 stcb->asoc.timoshutdown++;
1723 #ifdef SCTP_AUDITING_ENABLED
1724 sctp_auditing(4, inp, stcb, net);
1726 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1728 case SCTP_TIMER_TYPE_HEARTBEAT:
1729 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1732 SCTP_STAT_INCR(sctps_timoheartbeat);
1733 stcb->asoc.timoheartbeat++;
1734 if (sctp_heartbeat_timer(inp, stcb, net)) {
1735 /* no need to unlock on tcb its gone */
1738 #ifdef SCTP_AUDITING_ENABLED
1739 sctp_auditing(4, inp, stcb, net);
1741 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1742 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1743 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1746 case SCTP_TIMER_TYPE_COOKIE:
1747 if ((stcb == NULL) || (inp == NULL)) {
1750 if (sctp_cookie_timer(inp, stcb, net)) {
1751 /* no need to unlock on tcb its gone */
1754 SCTP_STAT_INCR(sctps_timocookie);
1755 stcb->asoc.timocookie++;
1756 #ifdef SCTP_AUDITING_ENABLED
1757 sctp_auditing(4, inp, stcb, net);
1760 * We consider T3 and Cookie timer pretty much the same with
1761 * respect to where from in chunk_output.
1763 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1765 case SCTP_TIMER_TYPE_NEWCOOKIE:
1773 SCTP_STAT_INCR(sctps_timosecret);
1774 (void)SCTP_GETTIME_TIMEVAL(&tv);
1775 SCTP_INP_WLOCK(inp);
1776 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1777 inp->sctp_ep.last_secret_number =
1778 inp->sctp_ep.current_secret_number;
1779 inp->sctp_ep.current_secret_number++;
1780 if (inp->sctp_ep.current_secret_number >=
1781 SCTP_HOW_MANY_SECRETS) {
1782 inp->sctp_ep.current_secret_number = 0;
1784 secret = (int)inp->sctp_ep.current_secret_number;
1785 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1786 inp->sctp_ep.secret_key[secret][i] =
1787 sctp_select_initial_TSN(&inp->sctp_ep);
1789 SCTP_INP_WUNLOCK(inp);
1790 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1794 case SCTP_TIMER_TYPE_PATHMTURAISE:
1795 if ((stcb == NULL) || (inp == NULL)) {
1798 SCTP_STAT_INCR(sctps_timopathmtu);
1799 sctp_pathmtu_timer(inp, stcb, net);
1802 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1803 if ((stcb == NULL) || (inp == NULL)) {
1806 if (sctp_shutdownack_timer(inp, stcb, net)) {
1807 /* no need to unlock on tcb its gone */
1810 SCTP_STAT_INCR(sctps_timoshutdownack);
1811 stcb->asoc.timoshutdownack++;
1812 #ifdef SCTP_AUDITING_ENABLED
1813 sctp_auditing(4, inp, stcb, net);
1815 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1817 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1818 if ((stcb == NULL) || (inp == NULL)) {
1821 SCTP_STAT_INCR(sctps_timoshutdownguard);
1822 op_err = sctp_generate_cause(SCTP_BASE_SYSCTL(sctp_diag_info_code),
1823 "Shutdown guard timer expired");
1824 sctp_abort_an_association(inp, stcb, op_err, SCTP_SO_NOT_LOCKED);
1825 /* no need to unlock on tcb its gone */
1828 case SCTP_TIMER_TYPE_STRRESET:
1829 if ((stcb == NULL) || (inp == NULL)) {
1832 if (sctp_strreset_timer(inp, stcb, net)) {
1833 /* no need to unlock on tcb its gone */
1836 SCTP_STAT_INCR(sctps_timostrmrst);
1837 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1839 case SCTP_TIMER_TYPE_ASCONF:
1840 if ((stcb == NULL) || (inp == NULL)) {
1843 if (sctp_asconf_timer(inp, stcb, net)) {
1844 /* no need to unlock on tcb its gone */
1847 SCTP_STAT_INCR(sctps_timoasconf);
1848 #ifdef SCTP_AUDITING_ENABLED
1849 sctp_auditing(4, inp, stcb, net);
1851 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1853 case SCTP_TIMER_TYPE_PRIM_DELETED:
1854 if ((stcb == NULL) || (inp == NULL)) {
1857 sctp_delete_prim_timer(inp, stcb, net);
1858 SCTP_STAT_INCR(sctps_timodelprim);
1861 case SCTP_TIMER_TYPE_AUTOCLOSE:
1862 if ((stcb == NULL) || (inp == NULL)) {
1865 SCTP_STAT_INCR(sctps_timoautoclose);
1866 sctp_autoclose_timer(inp, stcb, net);
1867 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1870 case SCTP_TIMER_TYPE_ASOCKILL:
1871 if ((stcb == NULL) || (inp == NULL)) {
1874 SCTP_STAT_INCR(sctps_timoassockill);
1875 /* Can we free it yet? */
1876 SCTP_INP_DECR_REF(inp);
1877 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL,
1878 SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1879 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1880 so = SCTP_INP_SO(inp);
1881 atomic_add_int(&stcb->asoc.refcnt, 1);
1882 SCTP_TCB_UNLOCK(stcb);
1883 SCTP_SOCKET_LOCK(so, 1);
1884 SCTP_TCB_LOCK(stcb);
1885 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1887 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
1888 SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1889 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1890 SCTP_SOCKET_UNLOCK(so, 1);
1893 * free asoc, always unlocks (or destroy's) so prevent
1894 * duplicate unlock or unlock of a free mtx :-0
1898 case SCTP_TIMER_TYPE_INPKILL:
1899 SCTP_STAT_INCR(sctps_timoinpkill);
1904 * special case, take away our increment since WE are the
1907 SCTP_INP_DECR_REF(inp);
1908 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL,
1909 SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1910 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1911 SCTP_CALLED_FROM_INPKILL_TIMER);
1915 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1919 #ifdef SCTP_AUDITING_ENABLED
1920 sctp_audit_log(0xF1, (uint8_t)type);
1922 sctp_auditing(5, inp, stcb, net);
1924 if ((did_output) && stcb) {
1926 * Now we need to clean up the control chunk chain if an
1927 * ECNE is on it. It must be marked as UNSENT again so next
1928 * call will continue to send it until such time that we get
1929 * a CWR, to remove it. It is, however, less likely that we
1930 * will find a ecn echo on the chain though.
1932 sctp_fix_ecn_echo(&stcb->asoc);
1936 SCTP_TCB_UNLOCK(stcb);
1940 SCTP_INP_DECR_REF(inp);
1943 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type = %d)\n", type);
1948 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1949 struct sctp_nets *net)
1952 struct sctp_timer *tmr;
1954 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1959 SCTP_TCB_LOCK_ASSERT(stcb);
1962 case SCTP_TIMER_TYPE_ZERO_COPY:
1963 tmr = &inp->sctp_ep.zero_copy_timer;
1964 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1966 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1967 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1968 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1970 case SCTP_TIMER_TYPE_ADDR_WQ:
1971 /* Only 1 tick away :-) */
1972 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1973 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1975 case SCTP_TIMER_TYPE_SEND:
1976 /* Here we use the RTO timer */
1980 if ((stcb == NULL) || (net == NULL)) {
1983 tmr = &net->rxt_timer;
1984 if (net->RTO == 0) {
1985 rto_val = stcb->asoc.initial_rto;
1989 to_ticks = MSEC_TO_TICKS(rto_val);
1992 case SCTP_TIMER_TYPE_INIT:
1994 * Here we use the INIT timer default usually about 1
1997 if ((stcb == NULL) || (net == NULL)) {
2000 tmr = &net->rxt_timer;
2001 if (net->RTO == 0) {
2002 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2004 to_ticks = MSEC_TO_TICKS(net->RTO);
2007 case SCTP_TIMER_TYPE_RECV:
2009 * Here we use the Delayed-Ack timer value from the inp
2010 * ususually about 200ms.
2015 tmr = &stcb->asoc.dack_timer;
2016 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
2018 case SCTP_TIMER_TYPE_SHUTDOWN:
2019 /* Here we use the RTO of the destination. */
2020 if ((stcb == NULL) || (net == NULL)) {
2023 if (net->RTO == 0) {
2024 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2026 to_ticks = MSEC_TO_TICKS(net->RTO);
2028 tmr = &net->rxt_timer;
2030 case SCTP_TIMER_TYPE_HEARTBEAT:
2032 * the net is used here so that we can add in the RTO. Even
2033 * though we use a different timer. We also add the HB timer
2034 * PLUS a random jitter.
2036 if ((stcb == NULL) || (net == NULL)) {
2042 if ((net->dest_state & SCTP_ADDR_NOHB) &&
2043 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
2046 if (net->RTO == 0) {
2047 to_ticks = stcb->asoc.initial_rto;
2049 to_ticks = net->RTO;
2051 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
2052 jitter = rndval % to_ticks;
2053 if (jitter >= (to_ticks >> 1)) {
2054 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
2056 to_ticks = to_ticks - jitter;
2058 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
2059 !(net->dest_state & SCTP_ADDR_PF)) {
2060 to_ticks += net->heart_beat_delay;
2063 * Now we must convert the to_ticks that are now in
2066 to_ticks = MSEC_TO_TICKS(to_ticks);
2067 tmr = &net->hb_timer;
2070 case SCTP_TIMER_TYPE_COOKIE:
2072 * Here we can use the RTO timer from the network since one
2073 * RTT was compelete. If a retran happened then we will be
2074 * using the RTO initial value.
2076 if ((stcb == NULL) || (net == NULL)) {
2079 if (net->RTO == 0) {
2080 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2082 to_ticks = MSEC_TO_TICKS(net->RTO);
2084 tmr = &net->rxt_timer;
2086 case SCTP_TIMER_TYPE_NEWCOOKIE:
2088 * nothing needed but the endpoint here ususually about 60
2091 tmr = &inp->sctp_ep.signature_change;
2092 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2094 case SCTP_TIMER_TYPE_ASOCKILL:
2098 tmr = &stcb->asoc.strreset_timer;
2099 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2101 case SCTP_TIMER_TYPE_INPKILL:
2103 * The inp is setup to die. We re-use the signature_chage
2104 * timer since that has stopped and we are in the GONE
2107 tmr = &inp->sctp_ep.signature_change;
2108 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2110 case SCTP_TIMER_TYPE_PATHMTURAISE:
2112 * Here we use the value found in the EP for PMTU ususually
2115 if ((stcb == NULL) || (net == NULL)) {
2118 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2121 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2122 tmr = &net->pmtu_timer;
2124 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2125 /* Here we use the RTO of the destination */
2126 if ((stcb == NULL) || (net == NULL)) {
2129 if (net->RTO == 0) {
2130 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2132 to_ticks = MSEC_TO_TICKS(net->RTO);
2134 tmr = &net->rxt_timer;
2136 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2138 * Here we use the endpoints shutdown guard timer usually
2144 if (inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN] == 0) {
2145 to_ticks = 5 * MSEC_TO_TICKS(stcb->asoc.maxrto);
2147 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2149 tmr = &stcb->asoc.shut_guard_timer;
2151 case SCTP_TIMER_TYPE_STRRESET:
2153 * Here the timer comes from the stcb but its value is from
2156 if ((stcb == NULL) || (net == NULL)) {
2159 if (net->RTO == 0) {
2160 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2162 to_ticks = MSEC_TO_TICKS(net->RTO);
2164 tmr = &stcb->asoc.strreset_timer;
2166 case SCTP_TIMER_TYPE_ASCONF:
2168 * Here the timer comes from the stcb but its value is from
2171 if ((stcb == NULL) || (net == NULL)) {
2174 if (net->RTO == 0) {
2175 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2177 to_ticks = MSEC_TO_TICKS(net->RTO);
2179 tmr = &stcb->asoc.asconf_timer;
2181 case SCTP_TIMER_TYPE_PRIM_DELETED:
2182 if ((stcb == NULL) || (net != NULL)) {
2185 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2186 tmr = &stcb->asoc.delete_prim_timer;
2188 case SCTP_TIMER_TYPE_AUTOCLOSE:
2192 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2194 * Really an error since stcb is NOT set to
2199 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2200 tmr = &stcb->asoc.autoclose_timer;
2203 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2208 if ((to_ticks <= 0) || (tmr == NULL)) {
2209 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2210 __func__, t_type, to_ticks, (void *)tmr);
2213 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2215 * we do NOT allow you to have it already running. if it is
2216 * we leave the current one up unchanged
2220 /* At this point we can proceed */
2221 if (t_type == SCTP_TIMER_TYPE_SEND) {
2222 stcb->asoc.num_send_timers_up++;
2224 tmr->stopped_from = 0;
2226 tmr->ep = (void *)inp;
2227 tmr->tcb = (void *)stcb;
2228 tmr->net = (void *)net;
2229 tmr->self = (void *)tmr;
2230 tmr->vnet = (void *)curvnet;
2231 tmr->ticks = sctp_get_tick_count();
2232 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2237 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2238 struct sctp_nets *net, uint32_t from)
2240 struct sctp_timer *tmr;
2242 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2248 SCTP_TCB_LOCK_ASSERT(stcb);
2251 case SCTP_TIMER_TYPE_ZERO_COPY:
2252 tmr = &inp->sctp_ep.zero_copy_timer;
2254 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2255 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2257 case SCTP_TIMER_TYPE_ADDR_WQ:
2258 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2260 case SCTP_TIMER_TYPE_SEND:
2261 if ((stcb == NULL) || (net == NULL)) {
2264 tmr = &net->rxt_timer;
2266 case SCTP_TIMER_TYPE_INIT:
2267 if ((stcb == NULL) || (net == NULL)) {
2270 tmr = &net->rxt_timer;
2272 case SCTP_TIMER_TYPE_RECV:
2276 tmr = &stcb->asoc.dack_timer;
2278 case SCTP_TIMER_TYPE_SHUTDOWN:
2279 if ((stcb == NULL) || (net == NULL)) {
2282 tmr = &net->rxt_timer;
2284 case SCTP_TIMER_TYPE_HEARTBEAT:
2285 if ((stcb == NULL) || (net == NULL)) {
2288 tmr = &net->hb_timer;
2290 case SCTP_TIMER_TYPE_COOKIE:
2291 if ((stcb == NULL) || (net == NULL)) {
2294 tmr = &net->rxt_timer;
2296 case SCTP_TIMER_TYPE_NEWCOOKIE:
2297 /* nothing needed but the endpoint here */
2298 tmr = &inp->sctp_ep.signature_change;
2300 * We re-use the newcookie timer for the INP kill timer. We
2301 * must assure that we do not kill it by accident.
2304 case SCTP_TIMER_TYPE_ASOCKILL:
2306 * Stop the asoc kill timer.
2311 tmr = &stcb->asoc.strreset_timer;
2314 case SCTP_TIMER_TYPE_INPKILL:
2316 * The inp is setup to die. We re-use the signature_chage
2317 * timer since that has stopped and we are in the GONE
2320 tmr = &inp->sctp_ep.signature_change;
2322 case SCTP_TIMER_TYPE_PATHMTURAISE:
2323 if ((stcb == NULL) || (net == NULL)) {
2326 tmr = &net->pmtu_timer;
2328 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2329 if ((stcb == NULL) || (net == NULL)) {
2332 tmr = &net->rxt_timer;
2334 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2338 tmr = &stcb->asoc.shut_guard_timer;
2340 case SCTP_TIMER_TYPE_STRRESET:
2344 tmr = &stcb->asoc.strreset_timer;
2346 case SCTP_TIMER_TYPE_ASCONF:
2350 tmr = &stcb->asoc.asconf_timer;
2352 case SCTP_TIMER_TYPE_PRIM_DELETED:
2356 tmr = &stcb->asoc.delete_prim_timer;
2358 case SCTP_TIMER_TYPE_AUTOCLOSE:
2362 tmr = &stcb->asoc.autoclose_timer;
2365 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2372 if ((tmr->type != t_type) && tmr->type) {
2374 * Ok we have a timer that is under joint use. Cookie timer
2375 * per chance with the SEND timer. We therefore are NOT
2376 * running the timer that the caller wants stopped. So just
2381 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2382 stcb->asoc.num_send_timers_up--;
2383 if (stcb->asoc.num_send_timers_up < 0) {
2384 stcb->asoc.num_send_timers_up = 0;
2388 tmr->stopped_from = from;
2389 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2394 sctp_calculate_len(struct mbuf *m)
2401 tlen += SCTP_BUF_LEN(at);
2402 at = SCTP_BUF_NEXT(at);
2408 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2409 struct sctp_association *asoc, uint32_t mtu)
2412 * Reset the P-MTU size on this association, this involves changing
2413 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2414 * allow the DF flag to be cleared.
2416 struct sctp_tmit_chunk *chk;
2417 unsigned int eff_mtu, ovh;
2419 asoc->smallest_mtu = mtu;
2420 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2421 ovh = SCTP_MIN_OVERHEAD;
2423 ovh = SCTP_MIN_V4_OVERHEAD;
2425 eff_mtu = mtu - ovh;
2426 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2427 if (chk->send_size > eff_mtu) {
2428 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2431 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2432 if (chk->send_size > eff_mtu) {
2433 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2440 * given an association and starting time of the current RTT period return
2441 * RTO in number of msecs net should point to the current network
2445 sctp_calculate_rto(struct sctp_tcb *stcb,
2446 struct sctp_association *asoc,
2447 struct sctp_nets *net,
2448 struct timeval *told,
2449 int safe, int rtt_from_sack)
2452 * given an association and the starting time of the current RTT
2453 * period (in value1/value2) return RTO in number of msecs.
2455 int32_t rtt; /* RTT in ms */
2457 int first_measure = 0;
2458 struct timeval now, then, *old;
2460 /* Copy it out for sparc64 */
2461 if (safe == sctp_align_unsafe_makecopy) {
2463 memcpy(&then, told, sizeof(struct timeval));
2464 } else if (safe == sctp_align_safe_nocopy) {
2468 SCTP_PRINTF("Huh, bad rto calc call\n");
2471 /************************/
2472 /* 1. calculate new RTT */
2473 /************************/
2474 /* get the current time */
2475 if (stcb->asoc.use_precise_time) {
2476 (void)SCTP_GETPTIME_TIMEVAL(&now);
2478 (void)SCTP_GETTIME_TIMEVAL(&now);
2480 timevalsub(&now, old);
2481 /* store the current RTT in us */
2482 net->rtt = (uint64_t)1000000 *(uint64_t)now.tv_sec +
2483 (uint64_t)now.tv_usec;
2485 /* compute rtt in ms */
2486 rtt = (int32_t)(net->rtt / 1000);
2487 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2489 * Tell the CC module that a new update has just occurred
2492 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2495 * Do we need to determine the lan? We do this only on sacks i.e.
2496 * RTT being determined from data not non-data (HB/INIT->INITACK).
2498 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2499 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2500 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2501 net->lan_type = SCTP_LAN_INTERNET;
2503 net->lan_type = SCTP_LAN_LOCAL;
2506 /***************************/
2507 /* 2. update RTTVAR & SRTT */
2508 /***************************/
2510 * Compute the scaled average lastsa and the
2511 * scaled variance lastsv as described in van Jacobson
2512 * Paper "Congestion Avoidance and Control", Annex A.
2514 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2515 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2517 if (net->RTO_measured) {
2518 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2523 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2525 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2526 rto_logging(net, SCTP_LOG_RTTVAR);
2529 /* First RTO measurment */
2530 net->RTO_measured = 1;
2532 net->lastsa = rtt << SCTP_RTT_SHIFT;
2533 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2534 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2535 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2538 if (net->lastsv == 0) {
2539 net->lastsv = SCTP_CLOCK_GRANULARITY;
2541 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2542 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2543 (stcb->asoc.sat_network_lockout == 0)) {
2544 stcb->asoc.sat_network = 1;
2545 } else if ((!first_measure) && stcb->asoc.sat_network) {
2546 stcb->asoc.sat_network = 0;
2547 stcb->asoc.sat_network_lockout = 1;
2549 /* bound it, per C6/C7 in Section 5.3.1 */
2550 if (new_rto < stcb->asoc.minrto) {
2551 new_rto = stcb->asoc.minrto;
2553 if (new_rto > stcb->asoc.maxrto) {
2554 new_rto = stcb->asoc.maxrto;
2556 /* we are now returning the RTO */
2561 * return a pointer to a contiguous piece of data from the given mbuf chain
2562 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2563 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2564 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2567 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t *in_ptr)
2573 if ((off < 0) || (len <= 0))
2576 /* find the desired start location */
2577 while ((m != NULL) && (off > 0)) {
2578 if (off < SCTP_BUF_LEN(m))
2580 off -= SCTP_BUF_LEN(m);
2581 m = SCTP_BUF_NEXT(m);
2586 /* is the current mbuf large enough (eg. contiguous)? */
2587 if ((SCTP_BUF_LEN(m) - off) >= len) {
2588 return (mtod(m, caddr_t)+off);
2590 /* else, it spans more than one mbuf, so save a temp copy... */
2591 while ((m != NULL) && (len > 0)) {
2592 count = min(SCTP_BUF_LEN(m) - off, len);
2593 bcopy(mtod(m, caddr_t)+off, ptr, count);
2597 m = SCTP_BUF_NEXT(m);
2599 if ((m == NULL) && (len > 0))
2602 return ((caddr_t)in_ptr);
2608 struct sctp_paramhdr *
2609 sctp_get_next_param(struct mbuf *m,
2611 struct sctp_paramhdr *pull,
2614 /* This just provides a typed signature to Peter's Pull routine */
2615 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2621 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2623 struct mbuf *m_last;
2629 if (padlen <= M_TRAILINGSPACE(m)) {
2631 * The easy way. We hope the majority of the time we hit
2636 /* Hard way we must grow the mbuf chain */
2637 m_last = sctp_get_mbuf_for_msg(padlen, 0, M_NOWAIT, 1, MT_DATA);
2638 if (m_last == NULL) {
2641 SCTP_BUF_LEN(m_last) = 0;
2642 SCTP_BUF_NEXT(m_last) = NULL;
2643 SCTP_BUF_NEXT(m) = m_last;
2645 dp = mtod(m_last, caddr_t)+SCTP_BUF_LEN(m_last);
2646 SCTP_BUF_LEN(m_last) += padlen;
2647 memset(dp, 0, padlen);
2652 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2654 /* find the last mbuf in chain and pad it */
2657 if (last_mbuf != NULL) {
2658 return (sctp_add_pad_tombuf(last_mbuf, padval));
2660 for (m_at = m; m_at; m_at = SCTP_BUF_NEXT(m_at)) {
2661 if (SCTP_BUF_NEXT(m_at) == NULL) {
2662 return (sctp_add_pad_tombuf(m_at, padval));
2670 sctp_notify_assoc_change(uint16_t state, struct sctp_tcb *stcb,
2671 uint16_t error, struct sctp_abort_chunk *abort, uint8_t from_peer, int so_locked
2672 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2677 struct mbuf *m_notify;
2678 struct sctp_assoc_change *sac;
2679 struct sctp_queued_to_read *control;
2680 unsigned int notif_len;
2683 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2690 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2691 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2692 if (abort != NULL) {
2693 abort_len = ntohs(abort->ch.chunk_length);
2697 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2698 notif_len += SCTP_ASSOC_SUPPORTS_MAX;
2699 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2700 notif_len += abort_len;
2702 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2703 if (m_notify == NULL) {
2704 /* Retry with smaller value. */
2705 notif_len = (unsigned int)sizeof(struct sctp_assoc_change);
2706 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
2707 if (m_notify == NULL) {
2711 SCTP_BUF_NEXT(m_notify) = NULL;
2712 sac = mtod(m_notify, struct sctp_assoc_change *);
2713 memset(sac, 0, notif_len);
2714 sac->sac_type = SCTP_ASSOC_CHANGE;
2716 sac->sac_length = sizeof(struct sctp_assoc_change);
2717 sac->sac_state = state;
2718 sac->sac_error = error;
2719 /* XXX verify these stream counts */
2720 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2721 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2722 sac->sac_assoc_id = sctp_get_associd(stcb);
2723 if (notif_len > sizeof(struct sctp_assoc_change)) {
2724 if ((state == SCTP_COMM_UP) || (state == SCTP_RESTART)) {
2726 if (stcb->asoc.prsctp_supported == 1) {
2727 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_PR;
2729 if (stcb->asoc.auth_supported == 1) {
2730 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_AUTH;
2732 if (stcb->asoc.asconf_supported == 1) {
2733 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_ASCONF;
2735 if (stcb->asoc.idata_supported == 1) {
2736 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_INTERLEAVING;
2738 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_MULTIBUF;
2739 if (stcb->asoc.reconfig_supported == 1) {
2740 sac->sac_info[i++] = SCTP_ASSOC_SUPPORTS_RE_CONFIG;
2742 sac->sac_length += i;
2743 } else if ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC)) {
2744 memcpy(sac->sac_info, abort, abort_len);
2745 sac->sac_length += abort_len;
2748 SCTP_BUF_LEN(m_notify) = sac->sac_length;
2749 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2750 0, 0, stcb->asoc.context, 0, 0, 0,
2752 if (control != NULL) {
2753 control->length = SCTP_BUF_LEN(m_notify);
2754 /* not that we need this */
2755 control->tail_mbuf = m_notify;
2756 control->spec_flags = M_NOTIFICATION;
2757 sctp_add_to_readq(stcb->sctp_ep, stcb,
2759 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2762 sctp_m_freem(m_notify);
2766 * For 1-to-1 style sockets, we send up and error when an ABORT
2770 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2771 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2772 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2773 SOCK_LOCK(stcb->sctp_socket);
2775 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2776 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2777 stcb->sctp_socket->so_error = ECONNREFUSED;
2779 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2780 stcb->sctp_socket->so_error = ECONNRESET;
2783 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) ||
2784 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_ECHOED)) {
2785 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ETIMEDOUT);
2786 stcb->sctp_socket->so_error = ETIMEDOUT;
2788 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNABORTED);
2789 stcb->sctp_socket->so_error = ECONNABORTED;
2793 /* Wake ANY sleepers */
2794 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2795 so = SCTP_INP_SO(stcb->sctp_ep);
2797 atomic_add_int(&stcb->asoc.refcnt, 1);
2798 SCTP_TCB_UNLOCK(stcb);
2799 SCTP_SOCKET_LOCK(so, 1);
2800 SCTP_TCB_LOCK(stcb);
2801 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2802 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2803 SCTP_SOCKET_UNLOCK(so, 1);
2808 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2809 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2810 ((state == SCTP_COMM_LOST) || (state == SCTP_CANT_STR_ASSOC))) {
2811 socantrcvmore_locked(stcb->sctp_socket);
2813 sorwakeup(stcb->sctp_socket);
2814 sowwakeup(stcb->sctp_socket);
2815 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2817 SCTP_SOCKET_UNLOCK(so, 1);
2823 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2824 struct sockaddr *sa, uint32_t error, int so_locked
2825 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2830 struct mbuf *m_notify;
2831 struct sctp_paddr_change *spc;
2832 struct sctp_queued_to_read *control;
2834 if ((stcb == NULL) ||
2835 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2836 /* event not enabled */
2839 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_NOWAIT, 1, MT_DATA);
2840 if (m_notify == NULL)
2842 SCTP_BUF_LEN(m_notify) = 0;
2843 spc = mtod(m_notify, struct sctp_paddr_change *);
2844 memset(spc, 0, sizeof(struct sctp_paddr_change));
2845 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2847 spc->spc_length = sizeof(struct sctp_paddr_change);
2848 switch (sa->sa_family) {
2852 if (sctp_is_feature_on(stcb->sctp_ep, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
2853 in6_sin_2_v4mapsin6((struct sockaddr_in *)sa,
2854 (struct sockaddr_in6 *)&spc->spc_aaddr);
2856 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2859 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2866 struct sockaddr_in6 *sin6;
2868 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2870 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2871 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2872 if (sin6->sin6_scope_id == 0) {
2873 /* recover scope_id for user */
2874 (void)sa6_recoverscope(sin6);
2876 /* clear embedded scope_id for user */
2877 in6_clearscope(&sin6->sin6_addr);
2887 spc->spc_state = state;
2888 spc->spc_error = error;
2889 spc->spc_assoc_id = sctp_get_associd(stcb);
2891 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2892 SCTP_BUF_NEXT(m_notify) = NULL;
2894 /* append to socket */
2895 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2896 0, 0, stcb->asoc.context, 0, 0, 0,
2898 if (control == NULL) {
2900 sctp_m_freem(m_notify);
2903 control->length = SCTP_BUF_LEN(m_notify);
2904 control->spec_flags = M_NOTIFICATION;
2905 /* not that we need this */
2906 control->tail_mbuf = m_notify;
2907 sctp_add_to_readq(stcb->sctp_ep, stcb,
2909 &stcb->sctp_socket->so_rcv, 1,
2910 SCTP_READ_LOCK_NOT_HELD,
2916 sctp_notify_send_failed(struct sctp_tcb *stcb, uint8_t sent, uint32_t error,
2917 struct sctp_tmit_chunk *chk, int so_locked
2918 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2923 struct mbuf *m_notify;
2924 struct sctp_send_failed *ssf;
2925 struct sctp_send_failed_event *ssfe;
2926 struct sctp_queued_to_read *control;
2927 struct sctp_chunkhdr *chkhdr;
2928 int notifhdr_len, chk_len, chkhdr_len, padding_len, payload_len;
2930 if ((stcb == NULL) ||
2931 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
2932 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
2933 /* event not enabled */
2936 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2937 notifhdr_len = sizeof(struct sctp_send_failed_event);
2939 notifhdr_len = sizeof(struct sctp_send_failed);
2941 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
2942 if (m_notify == NULL)
2945 SCTP_BUF_LEN(m_notify) = notifhdr_len;
2946 if (stcb->asoc.idata_supported) {
2947 chkhdr_len = sizeof(struct sctp_idata_chunk);
2949 chkhdr_len = sizeof(struct sctp_data_chunk);
2951 /* Use some defaults in case we can't access the chunk header */
2952 if (chk->send_size >= chkhdr_len) {
2953 payload_len = chk->send_size - chkhdr_len;
2958 if (chk->data != NULL) {
2959 chkhdr = mtod(chk->data, struct sctp_chunkhdr *);
2960 if (chkhdr != NULL) {
2961 chk_len = ntohs(chkhdr->chunk_length);
2962 if ((chk_len >= chkhdr_len) &&
2963 (chk->send_size >= chk_len) &&
2964 (chk->send_size - chk_len < 4)) {
2965 padding_len = chk->send_size - chk_len;
2966 payload_len = chk->send_size - chkhdr_len - padding_len;
2970 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
2971 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
2972 memset(ssfe, 0, notifhdr_len);
2973 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
2975 ssfe->ssfe_flags = SCTP_DATA_SENT;
2977 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
2979 ssfe->ssfe_length = (uint32_t)(notifhdr_len + payload_len);
2980 ssfe->ssfe_error = error;
2981 /* not exactly what the user sent in, but should be close :) */
2982 ssfe->ssfe_info.snd_sid = chk->rec.data.sid;
2983 ssfe->ssfe_info.snd_flags = chk->rec.data.rcv_flags;
2984 ssfe->ssfe_info.snd_ppid = chk->rec.data.ppid;
2985 ssfe->ssfe_info.snd_context = chk->rec.data.context;
2986 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
2987 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
2989 ssf = mtod(m_notify, struct sctp_send_failed *);
2990 memset(ssf, 0, notifhdr_len);
2991 ssf->ssf_type = SCTP_SEND_FAILED;
2993 ssf->ssf_flags = SCTP_DATA_SENT;
2995 ssf->ssf_flags = SCTP_DATA_UNSENT;
2997 ssf->ssf_length = (uint32_t)(notifhdr_len + payload_len);
2998 ssf->ssf_error = error;
2999 /* not exactly what the user sent in, but should be close :) */
3000 ssf->ssf_info.sinfo_stream = chk->rec.data.sid;
3001 ssf->ssf_info.sinfo_ssn = (uint16_t)chk->rec.data.mid;
3002 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
3003 ssf->ssf_info.sinfo_ppid = chk->rec.data.ppid;
3004 ssf->ssf_info.sinfo_context = chk->rec.data.context;
3005 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3006 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3008 if (chk->data != NULL) {
3009 /* Trim off the sctp chunk header (it should be there) */
3010 if (chk->send_size == chkhdr_len + payload_len + padding_len) {
3011 m_adj(chk->data, chkhdr_len);
3012 m_adj(chk->data, -padding_len);
3013 sctp_mbuf_crush(chk->data);
3014 chk->send_size -= (chkhdr_len + padding_len);
3017 SCTP_BUF_NEXT(m_notify) = chk->data;
3018 /* Steal off the mbuf */
3021 * For this case, we check the actual socket buffer, since the assoc
3022 * is going away we don't want to overfill the socket buffer for a
3025 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3026 sctp_m_freem(m_notify);
3029 /* append to socket */
3030 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3031 0, 0, stcb->asoc.context, 0, 0, 0,
3033 if (control == NULL) {
3035 sctp_m_freem(m_notify);
3038 control->spec_flags = M_NOTIFICATION;
3039 sctp_add_to_readq(stcb->sctp_ep, stcb,
3041 &stcb->sctp_socket->so_rcv, 1,
3042 SCTP_READ_LOCK_NOT_HELD,
3048 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
3049 struct sctp_stream_queue_pending *sp, int so_locked
3050 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3055 struct mbuf *m_notify;
3056 struct sctp_send_failed *ssf;
3057 struct sctp_send_failed_event *ssfe;
3058 struct sctp_queued_to_read *control;
3061 if ((stcb == NULL) ||
3062 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT) &&
3063 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT))) {
3064 /* event not enabled */
3067 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3068 notifhdr_len = sizeof(struct sctp_send_failed_event);
3070 notifhdr_len = sizeof(struct sctp_send_failed);
3072 m_notify = sctp_get_mbuf_for_msg(notifhdr_len, 0, M_NOWAIT, 1, MT_DATA);
3073 if (m_notify == NULL) {
3077 SCTP_BUF_LEN(m_notify) = notifhdr_len;
3078 if (sctp_stcb_is_feature_on(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVNSENDFAILEVNT)) {
3079 ssfe = mtod(m_notify, struct sctp_send_failed_event *);
3080 memset(ssfe, 0, notifhdr_len);
3081 ssfe->ssfe_type = SCTP_SEND_FAILED_EVENT;
3082 ssfe->ssfe_flags = SCTP_DATA_UNSENT;
3083 ssfe->ssfe_length = (uint32_t)(notifhdr_len + sp->length);
3084 ssfe->ssfe_error = error;
3085 /* not exactly what the user sent in, but should be close :) */
3086 ssfe->ssfe_info.snd_sid = sp->sid;
3087 if (sp->some_taken) {
3088 ssfe->ssfe_info.snd_flags = SCTP_DATA_LAST_FRAG;
3090 ssfe->ssfe_info.snd_flags = SCTP_DATA_NOT_FRAG;
3092 ssfe->ssfe_info.snd_ppid = sp->ppid;
3093 ssfe->ssfe_info.snd_context = sp->context;
3094 ssfe->ssfe_info.snd_assoc_id = sctp_get_associd(stcb);
3095 ssfe->ssfe_assoc_id = sctp_get_associd(stcb);
3097 ssf = mtod(m_notify, struct sctp_send_failed *);
3098 memset(ssf, 0, notifhdr_len);
3099 ssf->ssf_type = SCTP_SEND_FAILED;
3100 ssf->ssf_flags = SCTP_DATA_UNSENT;
3101 ssf->ssf_length = (uint32_t)(notifhdr_len + sp->length);
3102 ssf->ssf_error = error;
3103 /* not exactly what the user sent in, but should be close :) */
3104 ssf->ssf_info.sinfo_stream = sp->sid;
3105 ssf->ssf_info.sinfo_ssn = 0;
3106 if (sp->some_taken) {
3107 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
3109 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
3111 ssf->ssf_info.sinfo_ppid = sp->ppid;
3112 ssf->ssf_info.sinfo_context = sp->context;
3113 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
3114 ssf->ssf_assoc_id = sctp_get_associd(stcb);
3116 SCTP_BUF_NEXT(m_notify) = sp->data;
3118 /* Steal off the mbuf */
3121 * For this case, we check the actual socket buffer, since the assoc
3122 * is going away we don't want to overfill the socket buffer for a
3125 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3126 sctp_m_freem(m_notify);
3129 /* append to socket */
3130 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3131 0, 0, stcb->asoc.context, 0, 0, 0,
3133 if (control == NULL) {
3135 sctp_m_freem(m_notify);
3138 control->spec_flags = M_NOTIFICATION;
3139 sctp_add_to_readq(stcb->sctp_ep, stcb,
3141 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3147 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
3149 struct mbuf *m_notify;
3150 struct sctp_adaptation_event *sai;
3151 struct sctp_queued_to_read *control;
3153 if ((stcb == NULL) ||
3154 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
3155 /* event not enabled */
3158 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_NOWAIT, 1, MT_DATA);
3159 if (m_notify == NULL)
3162 SCTP_BUF_LEN(m_notify) = 0;
3163 sai = mtod(m_notify, struct sctp_adaptation_event *);
3164 memset(sai, 0, sizeof(struct sctp_adaptation_event));
3165 sai->sai_type = SCTP_ADAPTATION_INDICATION;
3167 sai->sai_length = sizeof(struct sctp_adaptation_event);
3168 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
3169 sai->sai_assoc_id = sctp_get_associd(stcb);
3171 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
3172 SCTP_BUF_NEXT(m_notify) = NULL;
3174 /* append to socket */
3175 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3176 0, 0, stcb->asoc.context, 0, 0, 0,
3178 if (control == NULL) {
3180 sctp_m_freem(m_notify);
3183 control->length = SCTP_BUF_LEN(m_notify);
3184 control->spec_flags = M_NOTIFICATION;
3185 /* not that we need this */
3186 control->tail_mbuf = m_notify;
3187 sctp_add_to_readq(stcb->sctp_ep, stcb,
3189 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3192 /* This always must be called with the read-queue LOCKED in the INP */
3194 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
3195 uint32_t val, int so_locked
3196 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3201 struct mbuf *m_notify;
3202 struct sctp_pdapi_event *pdapi;
3203 struct sctp_queued_to_read *control;
3206 if ((stcb == NULL) ||
3207 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3208 /* event not enabled */
3211 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3214 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_NOWAIT, 1, MT_DATA);
3215 if (m_notify == NULL)
3218 SCTP_BUF_LEN(m_notify) = 0;
3219 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3220 memset(pdapi, 0, sizeof(struct sctp_pdapi_event));
3221 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3222 pdapi->pdapi_flags = 0;
3223 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3224 pdapi->pdapi_indication = error;
3225 pdapi->pdapi_stream = (val >> 16);
3226 pdapi->pdapi_seq = (val & 0x0000ffff);
3227 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3229 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3230 SCTP_BUF_NEXT(m_notify) = NULL;
3231 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3232 0, 0, stcb->asoc.context, 0, 0, 0,
3234 if (control == NULL) {
3236 sctp_m_freem(m_notify);
3239 control->spec_flags = M_NOTIFICATION;
3240 control->length = SCTP_BUF_LEN(m_notify);
3241 /* not that we need this */
3242 control->tail_mbuf = m_notify;
3243 control->held_length = 0;
3244 control->length = 0;
3245 sb = &stcb->sctp_socket->so_rcv;
3246 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3247 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3249 sctp_sballoc(stcb, sb, m_notify);
3250 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3251 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3253 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3254 control->end_added = 1;
3255 if (stcb->asoc.control_pdapi)
3256 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3258 /* we really should not see this case */
3259 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3261 if (stcb->sctp_ep && stcb->sctp_socket) {
3262 /* This should always be the case */
3263 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3266 so = SCTP_INP_SO(stcb->sctp_ep);
3268 atomic_add_int(&stcb->asoc.refcnt, 1);
3269 SCTP_TCB_UNLOCK(stcb);
3270 SCTP_SOCKET_LOCK(so, 1);
3271 SCTP_TCB_LOCK(stcb);
3272 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3273 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3274 SCTP_SOCKET_UNLOCK(so, 1);
3279 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3280 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3282 SCTP_SOCKET_UNLOCK(so, 1);
3289 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3291 struct mbuf *m_notify;
3292 struct sctp_shutdown_event *sse;
3293 struct sctp_queued_to_read *control;
3296 * For TCP model AND UDP connected sockets we will send an error up
3297 * when an SHUTDOWN completes
3299 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3300 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3301 /* mark socket closed for read/write and wakeup! */
3302 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3305 so = SCTP_INP_SO(stcb->sctp_ep);
3306 atomic_add_int(&stcb->asoc.refcnt, 1);
3307 SCTP_TCB_UNLOCK(stcb);
3308 SCTP_SOCKET_LOCK(so, 1);
3309 SCTP_TCB_LOCK(stcb);
3310 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3311 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3312 SCTP_SOCKET_UNLOCK(so, 1);
3316 socantsendmore(stcb->sctp_socket);
3317 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3318 SCTP_SOCKET_UNLOCK(so, 1);
3321 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3322 /* event not enabled */
3325 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_NOWAIT, 1, MT_DATA);
3326 if (m_notify == NULL)
3329 sse = mtod(m_notify, struct sctp_shutdown_event *);
3330 memset(sse, 0, sizeof(struct sctp_shutdown_event));
3331 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3333 sse->sse_length = sizeof(struct sctp_shutdown_event);
3334 sse->sse_assoc_id = sctp_get_associd(stcb);
3336 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3337 SCTP_BUF_NEXT(m_notify) = NULL;
3339 /* append to socket */
3340 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3341 0, 0, stcb->asoc.context, 0, 0, 0,
3343 if (control == NULL) {
3345 sctp_m_freem(m_notify);
3348 control->spec_flags = M_NOTIFICATION;
3349 control->length = SCTP_BUF_LEN(m_notify);
3350 /* not that we need this */
3351 control->tail_mbuf = m_notify;
3352 sctp_add_to_readq(stcb->sctp_ep, stcb,
3354 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3358 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3360 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3365 struct mbuf *m_notify;
3366 struct sctp_sender_dry_event *event;
3367 struct sctp_queued_to_read *control;
3369 if ((stcb == NULL) ||
3370 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3371 /* event not enabled */
3374 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_NOWAIT, 1, MT_DATA);
3375 if (m_notify == NULL) {
3379 SCTP_BUF_LEN(m_notify) = 0;
3380 event = mtod(m_notify, struct sctp_sender_dry_event *);
3381 memset(event, 0, sizeof(struct sctp_sender_dry_event));
3382 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3383 event->sender_dry_flags = 0;
3384 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3385 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3387 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3388 SCTP_BUF_NEXT(m_notify) = NULL;
3390 /* append to socket */
3391 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3392 0, 0, stcb->asoc.context, 0, 0, 0,
3394 if (control == NULL) {
3396 sctp_m_freem(m_notify);
3399 control->length = SCTP_BUF_LEN(m_notify);
3400 control->spec_flags = M_NOTIFICATION;
3401 /* not that we need this */
3402 control->tail_mbuf = m_notify;
3403 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3404 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3409 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, uint16_t numberin, uint16_t numberout, int flag)
3411 struct mbuf *m_notify;
3412 struct sctp_queued_to_read *control;
3413 struct sctp_stream_change_event *stradd;
3415 if ((stcb == NULL) ||
3416 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_CHANGEEVNT))) {
3417 /* event not enabled */
3420 if ((stcb->asoc.peer_req_out) && flag) {
3421 /* Peer made the request, don't tell the local user */
3422 stcb->asoc.peer_req_out = 0;
3425 stcb->asoc.peer_req_out = 0;
3426 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_stream_change_event), 0, M_NOWAIT, 1, MT_DATA);
3427 if (m_notify == NULL)
3430 SCTP_BUF_LEN(m_notify) = 0;
3431 stradd = mtod(m_notify, struct sctp_stream_change_event *);
3432 memset(stradd, 0, sizeof(struct sctp_stream_change_event));
3433 stradd->strchange_type = SCTP_STREAM_CHANGE_EVENT;
3434 stradd->strchange_flags = flag;
3435 stradd->strchange_length = sizeof(struct sctp_stream_change_event);
3436 stradd->strchange_assoc_id = sctp_get_associd(stcb);
3437 stradd->strchange_instrms = numberin;
3438 stradd->strchange_outstrms = numberout;
3439 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_stream_change_event);
3440 SCTP_BUF_NEXT(m_notify) = NULL;
3441 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3443 sctp_m_freem(m_notify);
3446 /* append to socket */
3447 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3448 0, 0, stcb->asoc.context, 0, 0, 0,
3450 if (control == NULL) {
3452 sctp_m_freem(m_notify);
3455 control->spec_flags = M_NOTIFICATION;
3456 control->length = SCTP_BUF_LEN(m_notify);
3457 /* not that we need this */
3458 control->tail_mbuf = m_notify;
3459 sctp_add_to_readq(stcb->sctp_ep, stcb,
3461 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3465 sctp_notify_stream_reset_tsn(struct sctp_tcb *stcb, uint32_t sending_tsn, uint32_t recv_tsn, int flag)
3467 struct mbuf *m_notify;
3468 struct sctp_queued_to_read *control;
3469 struct sctp_assoc_reset_event *strasoc;
3471 if ((stcb == NULL) ||
3472 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ASSOC_RESETEVNT))) {
3473 /* event not enabled */
3476 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_reset_event), 0, M_NOWAIT, 1, MT_DATA);
3477 if (m_notify == NULL)
3480 SCTP_BUF_LEN(m_notify) = 0;
3481 strasoc = mtod(m_notify, struct sctp_assoc_reset_event *);
3482 memset(strasoc, 0, sizeof(struct sctp_assoc_reset_event));
3483 strasoc->assocreset_type = SCTP_ASSOC_RESET_EVENT;
3484 strasoc->assocreset_flags = flag;
3485 strasoc->assocreset_length = sizeof(struct sctp_assoc_reset_event);
3486 strasoc->assocreset_assoc_id = sctp_get_associd(stcb);
3487 strasoc->assocreset_local_tsn = sending_tsn;
3488 strasoc->assocreset_remote_tsn = recv_tsn;
3489 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_reset_event);
3490 SCTP_BUF_NEXT(m_notify) = NULL;
3491 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3493 sctp_m_freem(m_notify);
3496 /* append to socket */
3497 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3498 0, 0, stcb->asoc.context, 0, 0, 0,
3500 if (control == NULL) {
3502 sctp_m_freem(m_notify);
3505 control->spec_flags = M_NOTIFICATION;
3506 control->length = SCTP_BUF_LEN(m_notify);
3507 /* not that we need this */
3508 control->tail_mbuf = m_notify;
3509 sctp_add_to_readq(stcb->sctp_ep, stcb,
3511 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3517 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3518 int number_entries, uint16_t *list, int flag)
3520 struct mbuf *m_notify;
3521 struct sctp_queued_to_read *control;
3522 struct sctp_stream_reset_event *strreset;
3525 if ((stcb == NULL) ||
3526 (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_STREAM_RESETEVNT))) {
3527 /* event not enabled */
3530 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_NOWAIT, 1, MT_DATA);
3531 if (m_notify == NULL)
3534 SCTP_BUF_LEN(m_notify) = 0;
3535 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3536 if (len > M_TRAILINGSPACE(m_notify)) {
3537 /* never enough room */
3538 sctp_m_freem(m_notify);
3541 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3542 memset(strreset, 0, len);
3543 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3544 strreset->strreset_flags = flag;
3545 strreset->strreset_length = len;
3546 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3547 if (number_entries) {
3550 for (i = 0; i < number_entries; i++) {
3551 strreset->strreset_stream_list[i] = ntohs(list[i]);
3554 SCTP_BUF_LEN(m_notify) = len;
3555 SCTP_BUF_NEXT(m_notify) = NULL;
3556 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3558 sctp_m_freem(m_notify);
3561 /* append to socket */
3562 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3563 0, 0, stcb->asoc.context, 0, 0, 0,
3565 if (control == NULL) {
3567 sctp_m_freem(m_notify);
3570 control->spec_flags = M_NOTIFICATION;
3571 control->length = SCTP_BUF_LEN(m_notify);
3572 /* not that we need this */
3573 control->tail_mbuf = m_notify;
3574 sctp_add_to_readq(stcb->sctp_ep, stcb,
3576 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3581 sctp_notify_remote_error(struct sctp_tcb *stcb, uint16_t error, struct sctp_error_chunk *chunk)
3583 struct mbuf *m_notify;
3584 struct sctp_remote_error *sre;
3585 struct sctp_queued_to_read *control;
3586 unsigned int notif_len;
3589 if ((stcb == NULL) ||
3590 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPEERERR)) {
3593 if (chunk != NULL) {
3594 chunk_len = ntohs(chunk->ch.chunk_length);
3598 notif_len = (unsigned int)(sizeof(struct sctp_remote_error) + chunk_len);
3599 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3600 if (m_notify == NULL) {
3601 /* Retry with smaller value. */
3602 notif_len = (unsigned int)sizeof(struct sctp_remote_error);
3603 m_notify = sctp_get_mbuf_for_msg(notif_len, 0, M_NOWAIT, 1, MT_DATA);
3604 if (m_notify == NULL) {
3608 SCTP_BUF_NEXT(m_notify) = NULL;
3609 sre = mtod(m_notify, struct sctp_remote_error *);
3610 memset(sre, 0, notif_len);
3611 sre->sre_type = SCTP_REMOTE_ERROR;
3613 sre->sre_length = sizeof(struct sctp_remote_error);
3614 sre->sre_error = error;
3615 sre->sre_assoc_id = sctp_get_associd(stcb);
3616 if (notif_len > sizeof(struct sctp_remote_error)) {
3617 memcpy(sre->sre_data, chunk, chunk_len);
3618 sre->sre_length += chunk_len;
3620 SCTP_BUF_LEN(m_notify) = sre->sre_length;
3621 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3622 0, 0, stcb->asoc.context, 0, 0, 0,
3624 if (control != NULL) {
3625 control->length = SCTP_BUF_LEN(m_notify);
3626 /* not that we need this */
3627 control->tail_mbuf = m_notify;
3628 control->spec_flags = M_NOTIFICATION;
3629 sctp_add_to_readq(stcb->sctp_ep, stcb,
3631 &stcb->sctp_socket->so_rcv, 1,
3632 SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3634 sctp_m_freem(m_notify);
3640 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3641 uint32_t error, void *data, int so_locked
3642 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3647 if ((stcb == NULL) ||
3648 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3649 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3650 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3651 /* If the socket is gone we are out of here */
3654 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3657 if ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3658 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED)) {
3659 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3660 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3661 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3662 /* Don't report these in front states */
3666 switch (notification) {
3667 case SCTP_NOTIFY_ASSOC_UP:
3668 if (stcb->asoc.assoc_up_sent == 0) {
3669 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, NULL, 0, so_locked);
3670 stcb->asoc.assoc_up_sent = 1;
3672 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3673 sctp_notify_adaptation_layer(stcb);
3675 if (stcb->asoc.auth_supported == 0) {
3676 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3680 case SCTP_NOTIFY_ASSOC_DOWN:
3681 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, NULL, 0, so_locked);
3683 case SCTP_NOTIFY_INTERFACE_DOWN:
3685 struct sctp_nets *net;
3687 net = (struct sctp_nets *)data;
3688 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3689 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3692 case SCTP_NOTIFY_INTERFACE_UP:
3694 struct sctp_nets *net;
3696 net = (struct sctp_nets *)data;
3697 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3698 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3701 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3703 struct sctp_nets *net;
3705 net = (struct sctp_nets *)data;
3706 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3707 (struct sockaddr *)&net->ro._l_addr, error, so_locked);
3710 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3711 sctp_notify_send_failed2(stcb, error,
3712 (struct sctp_stream_queue_pending *)data, so_locked);
3714 case SCTP_NOTIFY_SENT_DG_FAIL:
3715 sctp_notify_send_failed(stcb, 1, error,
3716 (struct sctp_tmit_chunk *)data, so_locked);
3718 case SCTP_NOTIFY_UNSENT_DG_FAIL:
3719 sctp_notify_send_failed(stcb, 0, error,
3720 (struct sctp_tmit_chunk *)data, so_locked);
3722 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3726 val = *((uint32_t *)data);
3728 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3731 case SCTP_NOTIFY_ASSOC_LOC_ABORTED:
3732 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3733 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3734 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 0, so_locked);
3736 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 0, so_locked);
3739 case SCTP_NOTIFY_ASSOC_REM_ABORTED:
3740 if (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3741 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED)) {
3742 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, data, 1, so_locked);
3744 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, data, 1, so_locked);
3747 case SCTP_NOTIFY_ASSOC_RESTART:
3748 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, NULL, 0, so_locked);
3749 if (stcb->asoc.auth_supported == 0) {
3750 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3754 case SCTP_NOTIFY_STR_RESET_SEND:
3755 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_OUTGOING_SSN);
3757 case SCTP_NOTIFY_STR_RESET_RECV:
3758 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data), SCTP_STREAM_RESET_INCOMING);
3760 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3761 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3762 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_FAILED));
3764 case SCTP_NOTIFY_STR_RESET_DENIED_OUT:
3765 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3766 (SCTP_STREAM_RESET_OUTGOING_SSN | SCTP_STREAM_RESET_DENIED));
3768 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3769 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3770 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_FAILED));
3772 case SCTP_NOTIFY_STR_RESET_DENIED_IN:
3773 sctp_notify_stream_reset(stcb, error, ((uint16_t *)data),
3774 (SCTP_STREAM_RESET_INCOMING | SCTP_STREAM_RESET_DENIED));
3776 case SCTP_NOTIFY_ASCONF_ADD_IP:
3777 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3780 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3781 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3784 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3785 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3788 case SCTP_NOTIFY_PEER_SHUTDOWN:
3789 sctp_notify_shutdown_event(stcb);
3791 case SCTP_NOTIFY_AUTH_NEW_KEY:
3792 sctp_notify_authentication(stcb, SCTP_AUTH_NEW_KEY, error,
3793 (uint16_t)(uintptr_t)data,
3796 case SCTP_NOTIFY_AUTH_FREE_KEY:
3797 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3798 (uint16_t)(uintptr_t)data,
3801 case SCTP_NOTIFY_NO_PEER_AUTH:
3802 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3803 (uint16_t)(uintptr_t)data,
3806 case SCTP_NOTIFY_SENDER_DRY:
3807 sctp_notify_sender_dry_event(stcb, so_locked);
3809 case SCTP_NOTIFY_REMOTE_ERROR:
3810 sctp_notify_remote_error(stcb, error, data);
3813 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3814 __func__, notification, notification);
3820 sctp_report_all_outbound(struct sctp_tcb *stcb, uint16_t error, int holds_lock, int so_locked
3821 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3826 struct sctp_association *asoc;
3827 struct sctp_stream_out *outs;
3828 struct sctp_tmit_chunk *chk, *nchk;
3829 struct sctp_stream_queue_pending *sp, *nsp;
3836 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3837 /* already being freed */
3840 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3841 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3842 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3845 /* now through all the gunk freeing chunks */
3846 if (holds_lock == 0) {
3847 SCTP_TCB_SEND_LOCK(stcb);
3849 /* sent queue SHOULD be empty */
3850 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3851 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3852 asoc->sent_queue_cnt--;
3853 if (chk->sent != SCTP_DATAGRAM_NR_ACKED) {
3854 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
3855 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
3858 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
3862 if (chk->data != NULL) {
3863 sctp_free_bufspace(stcb, asoc, chk, 1);
3864 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb,
3865 error, chk, so_locked);
3867 sctp_m_freem(chk->data);
3871 sctp_free_a_chunk(stcb, chk, so_locked);
3872 /* sa_ignore FREED_MEMORY */
3874 /* pending send queue SHOULD be empty */
3875 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3876 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3877 asoc->send_queue_cnt--;
3878 if (asoc->strmout[chk->rec.data.sid].chunks_on_queues > 0) {
3879 asoc->strmout[chk->rec.data.sid].chunks_on_queues--;
3882 panic("No chunks on the queues for sid %u.", chk->rec.data.sid);
3885 if (chk->data != NULL) {
3886 sctp_free_bufspace(stcb, asoc, chk, 1);
3887 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb,
3888 error, chk, so_locked);
3890 sctp_m_freem(chk->data);
3894 sctp_free_a_chunk(stcb, chk, so_locked);
3895 /* sa_ignore FREED_MEMORY */
3897 for (i = 0; i < asoc->streamoutcnt; i++) {
3898 /* For each stream */
3899 outs = &asoc->strmout[i];
3900 /* clean up any sends there */
3901 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3902 atomic_subtract_int(&asoc->stream_queue_cnt, 1);
3903 TAILQ_REMOVE(&outs->outqueue, sp, next);
3904 stcb->asoc.ss_functions.sctp_ss_remove_from_stream(stcb, asoc, outs, sp, holds_lock);
3905 sctp_free_spbufspace(stcb, asoc, sp);
3907 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3908 error, (void *)sp, so_locked);
3910 sctp_m_freem(sp->data);
3912 sp->tail_mbuf = NULL;
3917 sctp_free_remote_addr(sp->net);
3920 /* Free the chunk */
3921 sctp_free_a_strmoq(stcb, sp, so_locked);
3922 /* sa_ignore FREED_MEMORY */
3926 if (holds_lock == 0) {
3927 SCTP_TCB_SEND_UNLOCK(stcb);
3932 sctp_abort_notification(struct sctp_tcb *stcb, uint8_t from_peer, uint16_t error,
3933 struct sctp_abort_chunk *abort, int so_locked
3934 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3942 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3943 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3944 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3945 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3947 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3948 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3949 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3952 /* Tell them we lost the asoc */
3953 sctp_report_all_outbound(stcb, error, 1, so_locked);
3955 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_REM_ABORTED, stcb, error, abort, so_locked);
3957 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_LOC_ABORTED, stcb, error, abort, so_locked);
3962 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3963 struct mbuf *m, int iphlen,
3964 struct sockaddr *src, struct sockaddr *dst,
3965 struct sctphdr *sh, struct mbuf *op_err,
3966 uint8_t mflowtype, uint32_t mflowid,
3967 uint32_t vrf_id, uint16_t port)
3970 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3976 vtag = stcb->asoc.peer_vtag;
3977 vrf_id = stcb->asoc.vrf_id;
3979 sctp_send_abort(m, iphlen, src, dst, sh, vtag, op_err,
3980 mflowtype, mflowid, inp->fibnum,
3983 /* We have a TCB to abort, send notification too */
3984 sctp_abort_notification(stcb, 0, 0, NULL, SCTP_SO_NOT_LOCKED);
3985 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3986 /* Ok, now lets free it */
3987 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3988 so = SCTP_INP_SO(inp);
3989 atomic_add_int(&stcb->asoc.refcnt, 1);
3990 SCTP_TCB_UNLOCK(stcb);
3991 SCTP_SOCKET_LOCK(so, 1);
3992 SCTP_TCB_LOCK(stcb);
3993 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3995 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3996 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3997 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3998 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4000 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4001 SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
4002 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4003 SCTP_SOCKET_UNLOCK(so, 1);
4007 #ifdef SCTP_ASOCLOG_OF_TSNS
4009 sctp_print_out_track_log(struct sctp_tcb *stcb)
4014 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
4015 SCTP_PRINTF("IN bound TSN log-aaa\n");
4016 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
4017 SCTP_PRINTF("None rcvd\n");
4020 if (stcb->asoc.tsn_in_wrapped) {
4021 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
4022 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4023 stcb->asoc.in_tsnlog[i].tsn,
4024 stcb->asoc.in_tsnlog[i].strm,
4025 stcb->asoc.in_tsnlog[i].seq,
4026 stcb->asoc.in_tsnlog[i].flgs,
4027 stcb->asoc.in_tsnlog[i].sz);
4030 if (stcb->asoc.tsn_in_at) {
4031 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
4032 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4033 stcb->asoc.in_tsnlog[i].tsn,
4034 stcb->asoc.in_tsnlog[i].strm,
4035 stcb->asoc.in_tsnlog[i].seq,
4036 stcb->asoc.in_tsnlog[i].flgs,
4037 stcb->asoc.in_tsnlog[i].sz);
4041 SCTP_PRINTF("OUT bound TSN log-aaa\n");
4042 if ((stcb->asoc.tsn_out_at == 0) &&
4043 (stcb->asoc.tsn_out_wrapped == 0)) {
4044 SCTP_PRINTF("None sent\n");
4046 if (stcb->asoc.tsn_out_wrapped) {
4047 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
4048 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4049 stcb->asoc.out_tsnlog[i].tsn,
4050 stcb->asoc.out_tsnlog[i].strm,
4051 stcb->asoc.out_tsnlog[i].seq,
4052 stcb->asoc.out_tsnlog[i].flgs,
4053 stcb->asoc.out_tsnlog[i].sz);
4056 if (stcb->asoc.tsn_out_at) {
4057 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
4058 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
4059 stcb->asoc.out_tsnlog[i].tsn,
4060 stcb->asoc.out_tsnlog[i].strm,
4061 stcb->asoc.out_tsnlog[i].seq,
4062 stcb->asoc.out_tsnlog[i].flgs,
4063 stcb->asoc.out_tsnlog[i].sz);
4071 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
4072 struct mbuf *op_err,
4074 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4079 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4083 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4084 so = SCTP_INP_SO(inp);
4087 /* Got to have a TCB */
4088 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4089 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4090 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4091 SCTP_CALLED_DIRECTLY_NOCMPSET);
4096 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
4098 /* notify the peer */
4099 sctp_send_abort_tcb(stcb, op_err, so_locked);
4100 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
4101 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
4102 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
4103 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
4105 /* notify the ulp */
4106 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0) {
4107 sctp_abort_notification(stcb, 0, 0, NULL, so_locked);
4109 /* now free the asoc */
4110 #ifdef SCTP_ASOCLOG_OF_TSNS
4111 sctp_print_out_track_log(stcb);
4113 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4115 atomic_add_int(&stcb->asoc.refcnt, 1);
4116 SCTP_TCB_UNLOCK(stcb);
4117 SCTP_SOCKET_LOCK(so, 1);
4118 SCTP_TCB_LOCK(stcb);
4119 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4122 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
4123 SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
4124 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4126 SCTP_SOCKET_UNLOCK(so, 1);
4132 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset,
4133 struct sockaddr *src, struct sockaddr *dst,
4134 struct sctphdr *sh, struct sctp_inpcb *inp,
4136 uint8_t mflowtype, uint32_t mflowid, uint16_t fibnum,
4137 uint32_t vrf_id, uint16_t port)
4139 struct sctp_chunkhdr *ch, chunk_buf;
4140 unsigned int chk_length;
4141 int contains_init_chunk;
4143 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
4144 /* Generate a TO address for future reference */
4145 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
4146 if (LIST_EMPTY(&inp->sctp_asoc_list)) {
4147 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
4148 SCTP_CALLED_DIRECTLY_NOCMPSET);
4151 contains_init_chunk = 0;
4152 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4153 sizeof(*ch), (uint8_t *)&chunk_buf);
4154 while (ch != NULL) {
4155 chk_length = ntohs(ch->chunk_length);
4156 if (chk_length < sizeof(*ch)) {
4157 /* break to abort land */
4160 switch (ch->chunk_type) {
4162 contains_init_chunk = 1;
4164 case SCTP_PACKET_DROPPED:
4165 /* we don't respond to pkt-dropped */
4167 case SCTP_ABORT_ASSOCIATION:
4168 /* we don't respond with an ABORT to an ABORT */
4170 case SCTP_SHUTDOWN_COMPLETE:
4172 * we ignore it since we are not waiting for it and
4176 case SCTP_SHUTDOWN_ACK:
4177 sctp_send_shutdown_complete2(src, dst, sh,
4178 mflowtype, mflowid, fibnum,
4184 offset += SCTP_SIZE32(chk_length);
4185 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4186 sizeof(*ch), (uint8_t *)&chunk_buf);
4188 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
4189 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
4190 (contains_init_chunk == 0))) {
4191 sctp_send_abort(m, iphlen, src, dst, sh, 0, cause,
4192 mflowtype, mflowid, fibnum,
4198 * check the inbound datagram to make sure there is not an abort inside it,
4199 * if there is return 1, else return 0.
4202 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t *vtagfill)
4204 struct sctp_chunkhdr *ch;
4205 struct sctp_init_chunk *init_chk, chunk_buf;
4207 unsigned int chk_length;
4209 offset = iphlen + sizeof(struct sctphdr);
4210 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
4211 (uint8_t *)&chunk_buf);
4212 while (ch != NULL) {
4213 chk_length = ntohs(ch->chunk_length);
4214 if (chk_length < sizeof(*ch)) {
4215 /* packet is probably corrupt */
4218 /* we seem to be ok, is it an abort? */
4219 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
4220 /* yep, tell them */
4223 if (ch->chunk_type == SCTP_INITIATION) {
4224 /* need to update the Vtag */
4225 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
4226 offset, sizeof(*init_chk), (uint8_t *)&chunk_buf);
4227 if (init_chk != NULL) {
4228 *vtagfill = ntohl(init_chk->init.initiate_tag);
4231 /* Nope, move to the next chunk */
4232 offset += SCTP_SIZE32(chk_length);
4233 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
4234 sizeof(*ch), (uint8_t *)&chunk_buf);
4240 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
4241 * set (i.e. it's 0) so, create this function to compare link local scopes
4245 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
4247 struct sockaddr_in6 a, b;
4253 if (a.sin6_scope_id == 0)
4254 if (sa6_recoverscope(&a)) {
4255 /* can't get scope, so can't match */
4258 if (b.sin6_scope_id == 0)
4259 if (sa6_recoverscope(&b)) {
4260 /* can't get scope, so can't match */
4263 if (a.sin6_scope_id != b.sin6_scope_id)
4270 * returns a sockaddr_in6 with embedded scope recovered and removed
4272 struct sockaddr_in6 *
4273 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
4275 /* check and strip embedded scope junk */
4276 if (addr->sin6_family == AF_INET6) {
4277 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
4278 if (addr->sin6_scope_id == 0) {
4280 if (!sa6_recoverscope(store)) {
4281 /* use the recovered scope */
4285 /* else, return the original "to" addr */
4286 in6_clearscope(&addr->sin6_addr);
4295 * are the two addresses the same? currently a "scopeless" check returns: 1
4299 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
4303 if (sa1 == NULL || sa2 == NULL)
4306 /* must be the same family */
4307 if (sa1->sa_family != sa2->sa_family)
4310 switch (sa1->sa_family) {
4314 /* IPv6 addresses */
4315 struct sockaddr_in6 *sin6_1, *sin6_2;
4317 sin6_1 = (struct sockaddr_in6 *)sa1;
4318 sin6_2 = (struct sockaddr_in6 *)sa2;
4319 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
4326 /* IPv4 addresses */
4327 struct sockaddr_in *sin_1, *sin_2;
4329 sin_1 = (struct sockaddr_in *)sa1;
4330 sin_2 = (struct sockaddr_in *)sa2;
4331 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
4335 /* we don't do these... */
4341 sctp_print_address(struct sockaddr *sa)
4344 char ip6buf[INET6_ADDRSTRLEN];
4347 switch (sa->sa_family) {
4351 struct sockaddr_in6 *sin6;
4353 sin6 = (struct sockaddr_in6 *)sa;
4354 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4355 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4356 ntohs(sin6->sin6_port),
4357 sin6->sin6_scope_id);
4364 struct sockaddr_in *sin;
4367 sin = (struct sockaddr_in *)sa;
4368 p = (unsigned char *)&sin->sin_addr;
4369 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4370 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4381 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4382 struct sctp_inpcb *new_inp,
4383 struct sctp_tcb *stcb,
4387 * go through our old INP and pull off any control structures that
4388 * belong to stcb and move then to the new inp.
4390 struct socket *old_so, *new_so;
4391 struct sctp_queued_to_read *control, *nctl;
4392 struct sctp_readhead tmp_queue;
4396 old_so = old_inp->sctp_socket;
4397 new_so = new_inp->sctp_socket;
4398 TAILQ_INIT(&tmp_queue);
4399 error = sblock(&old_so->so_rcv, waitflags);
4402 * Gak, can't get sblock, we have a problem. data will be
4403 * left stranded.. and we don't dare look at it since the
4404 * other thread may be reading something. Oh well, its a
4405 * screwed up app that does a peeloff OR a accept while
4406 * reading from the main socket... actually its only the
4407 * peeloff() case, since I think read will fail on a
4408 * listening socket..
4412 /* lock the socket buffers */
4413 SCTP_INP_READ_LOCK(old_inp);
4414 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4415 /* Pull off all for out target stcb */
4416 if (control->stcb == stcb) {
4417 /* remove it we want it */
4418 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4419 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4422 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4423 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4425 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4426 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4427 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4429 m = SCTP_BUF_NEXT(m);
4433 SCTP_INP_READ_UNLOCK(old_inp);
4434 /* Remove the sb-lock on the old socket */
4436 sbunlock(&old_so->so_rcv);
4437 /* Now we move them over to the new socket buffer */
4438 SCTP_INP_READ_LOCK(new_inp);
4439 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4440 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4443 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4444 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4446 sctp_sballoc(stcb, &new_so->so_rcv, m);
4447 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4448 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4450 m = SCTP_BUF_NEXT(m);
4453 SCTP_INP_READ_UNLOCK(new_inp);
4457 sctp_wakeup_the_read_socket(struct sctp_inpcb *inp,
4458 struct sctp_tcb *stcb,
4460 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4465 if ((inp != NULL) && (inp->sctp_socket != NULL)) {
4466 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4467 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4469 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4472 so = SCTP_INP_SO(inp);
4475 atomic_add_int(&stcb->asoc.refcnt, 1);
4476 SCTP_TCB_UNLOCK(stcb);
4478 SCTP_SOCKET_LOCK(so, 1);
4480 SCTP_TCB_LOCK(stcb);
4481 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4483 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4484 SCTP_SOCKET_UNLOCK(so, 1);
4489 sctp_sorwakeup(inp, inp->sctp_socket);
4490 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4492 SCTP_SOCKET_UNLOCK(so, 1);
4500 sctp_add_to_readq(struct sctp_inpcb *inp,
4501 struct sctp_tcb *stcb,
4502 struct sctp_queued_to_read *control,
4505 int inp_read_lock_held,
4507 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4513 * Here we must place the control on the end of the socket read
4514 * queue AND increment sb_cc so that select will work properly on
4517 struct mbuf *m, *prev = NULL;
4522 panic("Gak, inp NULL on add_to_readq");
4526 if (inp_read_lock_held == 0)
4527 SCTP_INP_READ_LOCK(inp);
4528 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4529 sctp_free_remote_addr(control->whoFrom);
4530 if (control->data) {
4531 sctp_m_freem(control->data);
4532 control->data = NULL;
4534 sctp_free_a_readq(stcb, control);
4535 if (inp_read_lock_held == 0)
4536 SCTP_INP_READ_UNLOCK(inp);
4539 if (!(control->spec_flags & M_NOTIFICATION)) {
4540 atomic_add_int(&inp->total_recvs, 1);
4541 if (!control->do_not_ref_stcb) {
4542 atomic_add_int(&stcb->total_recvs, 1);
4546 control->held_length = 0;
4547 control->length = 0;
4549 if (SCTP_BUF_LEN(m) == 0) {
4550 /* Skip mbufs with NO length */
4553 control->data = sctp_m_free(m);
4556 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4557 m = SCTP_BUF_NEXT(prev);
4560 control->tail_mbuf = prev;
4565 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4566 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4568 sctp_sballoc(stcb, sb, m);
4569 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4570 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4572 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4573 m = SCTP_BUF_NEXT(m);
4576 control->tail_mbuf = prev;
4578 /* Everything got collapsed out?? */
4579 sctp_free_remote_addr(control->whoFrom);
4580 sctp_free_a_readq(stcb, control);
4581 if (inp_read_lock_held == 0)
4582 SCTP_INP_READ_UNLOCK(inp);
4586 control->end_added = 1;
4588 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4589 control->on_read_q = 1;
4590 if (inp_read_lock_held == 0)
4591 SCTP_INP_READ_UNLOCK(inp);
4592 if (inp && inp->sctp_socket) {
4593 sctp_wakeup_the_read_socket(inp, stcb, so_locked);
4597 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4598 *************ALTERNATE ROUTING CODE
4601 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4602 *************ALTERNATE ROUTING CODE
4606 sctp_generate_cause(uint16_t code, char *info)
4609 struct sctp_gen_error_cause *cause;
4613 if ((code == 0) || (info == NULL)) {
4616 info_len = strlen(info);
4617 if (info_len > (SCTP_MAX_CAUSE_LENGTH - sizeof(struct sctp_paramhdr))) {
4620 len = (uint16_t)(sizeof(struct sctp_paramhdr) + info_len);
4621 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4623 SCTP_BUF_LEN(m) = len;
4624 cause = mtod(m, struct sctp_gen_error_cause *);
4625 cause->code = htons(code);
4626 cause->length = htons(len);
4627 memcpy(cause->info, info, info_len);
4633 sctp_generate_no_user_data_cause(uint32_t tsn)
4636 struct sctp_error_no_user_data *no_user_data_cause;
4639 len = (uint16_t)sizeof(struct sctp_error_no_user_data);
4640 m = sctp_get_mbuf_for_msg(len, 0, M_NOWAIT, 1, MT_DATA);
4642 SCTP_BUF_LEN(m) = len;
4643 no_user_data_cause = mtod(m, struct sctp_error_no_user_data *);
4644 no_user_data_cause->cause.code = htons(SCTP_CAUSE_NO_USER_DATA);
4645 no_user_data_cause->cause.length = htons(len);
4646 no_user_data_cause->tsn = htonl(tsn);
4651 #ifdef SCTP_MBCNT_LOGGING
4653 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4654 struct sctp_tmit_chunk *tp1, int chk_cnt)
4656 if (tp1->data == NULL) {
4659 asoc->chunks_on_out_queue -= chk_cnt;
4660 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4661 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4662 asoc->total_output_queue_size,
4667 if (asoc->total_output_queue_size >= tp1->book_size) {
4668 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4670 asoc->total_output_queue_size = 0;
4673 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4674 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4675 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4676 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4678 stcb->sctp_socket->so_snd.sb_cc = 0;
4687 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4688 uint8_t sent, int so_locked
4689 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4694 struct sctp_stream_out *strq;
4695 struct sctp_tmit_chunk *chk = NULL, *tp2;
4696 struct sctp_stream_queue_pending *sp;
4699 uint8_t foundeom = 0;
4702 int do_wakeup_routine = 0;
4704 sid = tp1->rec.data.sid;
4705 mid = tp1->rec.data.mid;
4706 if (sent || !(tp1->rec.data.rcv_flags & SCTP_DATA_FIRST_FRAG)) {
4707 stcb->asoc.abandoned_sent[0]++;
4708 stcb->asoc.abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4709 stcb->asoc.strmout[sid].abandoned_sent[0]++;
4710 #if defined(SCTP_DETAILED_STR_STATS)
4711 stcb->asoc.strmout[stream].abandoned_sent[PR_SCTP_POLICY(tp1->flags)]++;
4714 stcb->asoc.abandoned_unsent[0]++;
4715 stcb->asoc.abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4716 stcb->asoc.strmout[sid].abandoned_unsent[0]++;
4717 #if defined(SCTP_DETAILED_STR_STATS)
4718 stcb->asoc.strmout[stream].abandoned_unsent[PR_SCTP_POLICY(tp1->flags)]++;
4722 ret_sz += tp1->book_size;
4723 if (tp1->data != NULL) {
4724 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4725 sctp_flight_size_decrease(tp1);
4726 sctp_total_flight_decrease(stcb, tp1);
4728 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4729 stcb->asoc.peers_rwnd += tp1->send_size;
4730 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4732 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4734 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4737 sctp_m_freem(tp1->data);
4740 do_wakeup_routine = 1;
4741 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4742 stcb->asoc.sent_queue_cnt_removeable--;
4745 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4746 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4747 SCTP_DATA_NOT_FRAG) {
4748 /* not frag'ed we ae done */
4751 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4752 /* end of frag, we are done */
4757 * Its a begin or middle piece, we must mark all of
4761 tp1 = TAILQ_NEXT(tp1, sctp_next);
4763 } while (tp1 && notdone);
4764 if (foundeom == 0) {
4766 * The multi-part message was scattered across the send and
4769 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4770 if ((tp1->rec.data.sid != sid) ||
4771 (!SCTP_MID_EQ(stcb->asoc.idata_supported, tp1->rec.data.mid, mid))) {
4775 * save to chk in case we have some on stream out
4776 * queue. If so and we have an un-transmitted one we
4777 * don't have to fudge the TSN.
4780 ret_sz += tp1->book_size;
4781 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4783 sctp_ulp_notify(SCTP_NOTIFY_SENT_DG_FAIL, stcb, 0, tp1, so_locked);
4785 sctp_ulp_notify(SCTP_NOTIFY_UNSENT_DG_FAIL, stcb, 0, tp1, so_locked);
4788 sctp_m_freem(tp1->data);
4791 /* No flight involved here book the size to 0 */
4793 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4796 do_wakeup_routine = 1;
4797 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4798 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4800 * on to the sent queue so we can wait for it to be
4803 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4805 stcb->asoc.send_queue_cnt--;
4806 stcb->asoc.sent_queue_cnt++;
4809 if (foundeom == 0) {
4811 * Still no eom found. That means there is stuff left on the
4812 * stream out queue.. yuck.
4814 SCTP_TCB_SEND_LOCK(stcb);
4815 strq = &stcb->asoc.strmout[sid];
4816 sp = TAILQ_FIRST(&strq->outqueue);
4818 sp->discard_rest = 1;
4820 * We may need to put a chunk on the queue that
4821 * holds the TSN that would have been sent with the
4825 /* Yep, we have to */
4826 sctp_alloc_a_chunk(stcb, chk);
4829 * we are hosed. All we can do is
4830 * nothing.. which will cause an
4831 * abort if the peer is paying
4836 memset(chk, 0, sizeof(*chk));
4837 chk->rec.data.rcv_flags = 0;
4838 chk->sent = SCTP_FORWARD_TSN_SKIP;
4839 chk->asoc = &stcb->asoc;
4840 if (stcb->asoc.idata_supported == 0) {
4841 if (sp->sinfo_flags & SCTP_UNORDERED) {
4842 chk->rec.data.mid = 0;
4844 chk->rec.data.mid = strq->next_mid_ordered;
4847 if (sp->sinfo_flags & SCTP_UNORDERED) {
4848 chk->rec.data.mid = strq->next_mid_unordered;
4850 chk->rec.data.mid = strq->next_mid_ordered;
4853 chk->rec.data.sid = sp->sid;
4854 chk->rec.data.ppid = sp->ppid;
4855 chk->rec.data.context = sp->context;
4856 chk->flags = sp->act_flags;
4858 chk->rec.data.tsn = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4859 strq->chunks_on_queues++;
4860 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4861 stcb->asoc.sent_queue_cnt++;
4862 stcb->asoc.pr_sctp_cnt++;
4864 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4865 if (sp->sinfo_flags & SCTP_UNORDERED) {
4866 chk->rec.data.rcv_flags |= SCTP_DATA_UNORDERED;
4868 if (stcb->asoc.idata_supported == 0) {
4869 if ((sp->sinfo_flags & SCTP_UNORDERED) == 0) {
4870 strq->next_mid_ordered++;
4873 if (sp->sinfo_flags & SCTP_UNORDERED) {
4874 strq->next_mid_unordered++;
4876 strq->next_mid_ordered++;
4882 * Pull any data to free up the SB and allow
4883 * sender to "add more" while we will throw
4886 sctp_free_spbufspace(stcb, &stcb->asoc, sp);
4887 ret_sz += sp->length;
4888 do_wakeup_routine = 1;
4890 sctp_m_freem(sp->data);
4892 sp->tail_mbuf = NULL;
4896 SCTP_TCB_SEND_UNLOCK(stcb);
4898 if (do_wakeup_routine) {
4899 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4902 so = SCTP_INP_SO(stcb->sctp_ep);
4904 atomic_add_int(&stcb->asoc.refcnt, 1);
4905 SCTP_TCB_UNLOCK(stcb);
4906 SCTP_SOCKET_LOCK(so, 1);
4907 SCTP_TCB_LOCK(stcb);
4908 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4909 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4910 /* assoc was freed while we were unlocked */
4911 SCTP_SOCKET_UNLOCK(so, 1);
4916 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4917 #if defined(__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4919 SCTP_SOCKET_UNLOCK(so, 1);
4927 * checks to see if the given address, sa, is one that is currently known by
4928 * the kernel note: can't distinguish the same address on multiple interfaces
4929 * and doesn't handle multiple addresses with different zone/scope id's note:
4930 * ifa_ifwithaddr() compares the entire sockaddr struct
4933 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4936 struct sctp_laddr *laddr;
4938 if (holds_lock == 0) {
4939 SCTP_INP_RLOCK(inp);
4941 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4942 if (laddr->ifa == NULL)
4944 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4947 if (addr->sa_family == AF_INET) {
4948 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4949 laddr->ifa->address.sin.sin_addr.s_addr) {
4951 if (holds_lock == 0) {
4952 SCTP_INP_RUNLOCK(inp);
4954 return (laddr->ifa);
4960 if (addr->sa_family == AF_INET6) {
4961 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4962 &laddr->ifa->address.sin6)) {
4964 if (holds_lock == 0) {
4965 SCTP_INP_RUNLOCK(inp);
4967 return (laddr->ifa);
4973 if (holds_lock == 0) {
4974 SCTP_INP_RUNLOCK(inp);
4980 sctp_get_ifa_hash_val(struct sockaddr *addr)
4982 switch (addr->sa_family) {
4986 struct sockaddr_in *sin;
4988 sin = (struct sockaddr_in *)addr;
4989 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
4995 struct sockaddr_in6 *sin6;
4996 uint32_t hash_of_addr;
4998 sin6 = (struct sockaddr_in6 *)addr;
4999 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
5000 sin6->sin6_addr.s6_addr32[1] +
5001 sin6->sin6_addr.s6_addr32[2] +
5002 sin6->sin6_addr.s6_addr32[3]);
5003 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
5004 return (hash_of_addr);
5014 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
5016 struct sctp_ifa *sctp_ifap;
5017 struct sctp_vrf *vrf;
5018 struct sctp_ifalist *hash_head;
5019 uint32_t hash_of_addr;
5021 if (holds_lock == 0)
5022 SCTP_IPI_ADDR_RLOCK();
5024 vrf = sctp_find_vrf(vrf_id);
5026 if (holds_lock == 0)
5027 SCTP_IPI_ADDR_RUNLOCK();
5030 hash_of_addr = sctp_get_ifa_hash_val(addr);
5032 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
5033 if (hash_head == NULL) {
5034 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
5035 hash_of_addr, (uint32_t)vrf->vrf_addr_hashmark,
5036 (uint32_t)(hash_of_addr & vrf->vrf_addr_hashmark));
5037 sctp_print_address(addr);
5038 SCTP_PRINTF("No such bucket for address\n");
5039 if (holds_lock == 0)
5040 SCTP_IPI_ADDR_RUNLOCK();
5044 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
5045 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
5048 if (addr->sa_family == AF_INET) {
5049 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
5050 sctp_ifap->address.sin.sin_addr.s_addr) {
5052 if (holds_lock == 0)
5053 SCTP_IPI_ADDR_RUNLOCK();
5060 if (addr->sa_family == AF_INET6) {
5061 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
5062 &sctp_ifap->address.sin6)) {
5064 if (holds_lock == 0)
5065 SCTP_IPI_ADDR_RUNLOCK();
5072 if (holds_lock == 0)
5073 SCTP_IPI_ADDR_RUNLOCK();
5078 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t *freed_so_far, int hold_rlock,
5081 /* User pulled some data, do we need a rwnd update? */
5084 struct socket *so = NULL;
5089 atomic_add_int(&stcb->asoc.refcnt, 1);
5091 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
5092 SCTP_STATE_SHUTDOWN_RECEIVED |
5093 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
5094 /* Pre-check If we are freeing no update */
5097 SCTP_INP_INCR_REF(stcb->sctp_ep);
5098 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5099 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5102 so = stcb->sctp_socket;
5106 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
5107 /* Have you have freed enough to look */
5109 /* Yep, its worth a look and the lock overhead */
5111 /* Figure out what the rwnd would be */
5112 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
5113 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
5114 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
5118 if (dif >= rwnd_req) {
5120 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
5123 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5125 * One last check before we allow the guy possibly
5126 * to get in. There is a race, where the guy has not
5127 * reached the gate. In that case
5131 SCTP_TCB_LOCK(stcb);
5132 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5133 /* No reports here */
5134 SCTP_TCB_UNLOCK(stcb);
5137 SCTP_STAT_INCR(sctps_wu_sacks_sent);
5138 sctp_send_sack(stcb, SCTP_SO_LOCKED);
5140 sctp_chunk_output(stcb->sctp_ep, stcb,
5141 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
5142 /* make sure no timer is running */
5143 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL,
5144 SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
5145 SCTP_TCB_UNLOCK(stcb);
5147 /* Update how much we have pending */
5148 stcb->freed_by_sorcv_sincelast = dif;
5151 if (so && r_unlocked && hold_rlock) {
5152 SCTP_INP_READ_LOCK(stcb->sctp_ep);
5154 SCTP_INP_DECR_REF(stcb->sctp_ep);
5156 atomic_add_int(&stcb->asoc.refcnt, -1);
5161 sctp_sorecvmsg(struct socket *so,
5164 struct sockaddr *from,
5167 struct sctp_sndrcvinfo *sinfo,
5171 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
5172 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
5173 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
5174 * On the way out we may send out any combination of:
5175 * MSG_NOTIFICATION MSG_EOR
5178 struct sctp_inpcb *inp = NULL;
5180 int cp_len = 0, error = 0;
5181 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
5182 struct mbuf *m = NULL;
5183 struct sctp_tcb *stcb = NULL;
5184 int wakeup_read_socket = 0;
5185 int freecnt_applied = 0;
5186 int out_flags = 0, in_flags = 0;
5187 int block_allowed = 1;
5188 uint32_t freed_so_far = 0;
5189 uint32_t copied_so_far = 0;
5190 int in_eeor_mode = 0;
5191 int no_rcv_needed = 0;
5192 uint32_t rwnd_req = 0;
5193 int hold_sblock = 0;
5196 uint32_t held_length = 0;
5197 int sockbuf_lock = 0;
5200 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5204 in_flags = *msg_flags;
5205 if (in_flags & MSG_PEEK)
5206 SCTP_STAT_INCR(sctps_read_peeks);
5210 slen = uio->uio_resid;
5212 /* Pull in and set up our int flags */
5213 if (in_flags & MSG_OOB) {
5214 /* Out of band's NOT supported */
5215 return (EOPNOTSUPP);
5217 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5218 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5221 if ((in_flags & (MSG_DONTWAIT
5224 SCTP_SO_IS_NBIO(so)) {
5227 /* setup the endpoint */
5228 inp = (struct sctp_inpcb *)so->so_pcb;
5230 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5233 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5234 /* Must be at least a MTU's worth */
5235 if (rwnd_req < SCTP_MIN_RWND)
5236 rwnd_req = SCTP_MIN_RWND;
5237 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5238 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5239 sctp_misc_ints(SCTP_SORECV_ENTER,
5240 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5242 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5243 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5244 rwnd_req, block_allowed, so->so_rcv.sb_cc, (uint32_t)uio->uio_resid);
5246 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5248 goto release_unlocked;
5255 if (hold_sblock == 0) {
5256 SOCKBUF_LOCK(&so->so_rcv);
5259 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5260 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5263 if ((so->so_rcv.sb_state & SBS_CANTRCVMORE) && (so->so_rcv.sb_cc == 0)) {
5265 error = so->so_error;
5266 if ((in_flags & MSG_PEEK) == 0)
5270 if (so->so_rcv.sb_cc == 0) {
5277 if (so->so_rcv.sb_cc <= held_length) {
5279 error = so->so_error;
5280 if ((in_flags & MSG_PEEK) == 0) {
5285 if ((so->so_rcv.sb_cc == 0) &&
5286 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5287 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5288 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5290 * For active open side clear flags for
5291 * re-use passive open is blocked by
5294 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5296 * You were aborted, passive side
5299 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5302 so->so_state &= ~(SS_ISCONNECTING |
5303 SS_ISDISCONNECTING |
5307 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5308 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5315 if (block_allowed) {
5316 error = sbwait(&so->so_rcv);
5321 goto restart_nosblocks;
5323 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5324 error = EWOULDBLOCK;
5328 if (hold_sblock == 1) {
5329 SOCKBUF_UNLOCK(&so->so_rcv);
5332 /* we possibly have data we can read */
5333 /* sa_ignore FREED_MEMORY */
5334 control = TAILQ_FIRST(&inp->read_queue);
5335 if (control == NULL) {
5337 * This could be happening since the appender did the
5338 * increment but as not yet did the tailq insert onto the
5341 if (hold_rlock == 0) {
5342 SCTP_INP_READ_LOCK(inp);
5344 control = TAILQ_FIRST(&inp->read_queue);
5345 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5347 panic("Huh, its non zero and nothing on control?");
5349 so->so_rcv.sb_cc = 0;
5351 SCTP_INP_READ_UNLOCK(inp);
5355 if ((control->length == 0) &&
5356 (control->do_not_ref_stcb)) {
5358 * Clean up code for freeing assoc that left behind a
5359 * pdapi.. maybe a peer in EEOR that just closed after
5360 * sending and never indicated a EOR.
5362 if (hold_rlock == 0) {
5364 SCTP_INP_READ_LOCK(inp);
5366 control->held_length = 0;
5367 if (control->data) {
5368 /* Hmm there is data here .. fix */
5372 m_tmp = control->data;
5374 cnt += SCTP_BUF_LEN(m_tmp);
5375 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5376 control->tail_mbuf = m_tmp;
5377 control->end_added = 1;
5379 m_tmp = SCTP_BUF_NEXT(m_tmp);
5381 control->length = cnt;
5384 TAILQ_REMOVE(&inp->read_queue, control, next);
5385 /* Add back any hiddend data */
5386 sctp_free_remote_addr(control->whoFrom);
5387 sctp_free_a_readq(stcb, control);
5391 SCTP_INP_READ_UNLOCK(inp);
5395 if ((control->length == 0) &&
5396 (control->end_added == 1)) {
5398 * Do we also need to check for (control->pdapi_aborted ==
5401 if (hold_rlock == 0) {
5403 SCTP_INP_READ_LOCK(inp);
5405 TAILQ_REMOVE(&inp->read_queue, control, next);
5406 if (control->data) {
5408 panic("control->data not null but control->length == 0");
5410 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5411 sctp_m_freem(control->data);
5412 control->data = NULL;
5415 if (control->aux_data) {
5416 sctp_m_free(control->aux_data);
5417 control->aux_data = NULL;
5420 if (control->on_strm_q) {
5421 panic("About to free ctl:%p so:%p and its in %d",
5422 control, so, control->on_strm_q);
5425 sctp_free_remote_addr(control->whoFrom);
5426 sctp_free_a_readq(stcb, control);
5429 SCTP_INP_READ_UNLOCK(inp);
5433 if (control->length == 0) {
5434 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5436 /* find a more suitable one then this */
5437 ctl = TAILQ_NEXT(control, next);
5439 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5441 (ctl->spec_flags & M_NOTIFICATION) ||
5442 ((ctl->do_not_ref_stcb == 0) &&
5443 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5446 * If we have a different TCB next, and there is data
5447 * present. If we have already taken some (pdapi), OR we can
5448 * ref the tcb and no delivery as started on this stream, we
5449 * take it. Note we allow a notification on a different
5450 * assoc to be delivered..
5454 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5456 ((ctl->some_taken) ||
5457 ((ctl->do_not_ref_stcb == 0) &&
5458 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5459 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5461 * If we have the same tcb, and there is data present, and we
5462 * have the strm interleave feature present. Then if we have
5463 * taken some (pdapi) or we can refer to tht tcb AND we have
5464 * not started a delivery for this stream, we can take it.
5465 * Note we do NOT allow a notificaiton on the same assoc to
5471 ctl = TAILQ_NEXT(ctl, next);
5475 * if we reach here, not suitable replacement is available
5476 * <or> fragment interleave is NOT on. So stuff the sb_cc
5477 * into the our held count, and its time to sleep again.
5479 held_length = so->so_rcv.sb_cc;
5480 control->held_length = so->so_rcv.sb_cc;
5483 /* Clear the held length since there is something to read */
5484 control->held_length = 0;
5487 * If we reach here, control has a some data for us to read off.
5488 * Note that stcb COULD be NULL.
5490 if (hold_rlock == 0) {
5492 SCTP_INP_READ_LOCK(inp);
5494 control->some_taken++;
5495 stcb = control->stcb;
5497 if ((control->do_not_ref_stcb == 0) &&
5498 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5499 if (freecnt_applied == 0)
5501 } else if (control->do_not_ref_stcb == 0) {
5502 /* you can't free it on me please */
5504 * The lock on the socket buffer protects us so the
5505 * free code will stop. But since we used the
5506 * socketbuf lock and the sender uses the tcb_lock
5507 * to increment, we need to use the atomic add to
5510 if (freecnt_applied) {
5512 panic("refcnt already incremented");
5514 SCTP_PRINTF("refcnt already incremented?\n");
5517 atomic_add_int(&stcb->asoc.refcnt, 1);
5518 freecnt_applied = 1;
5521 * Setup to remember how much we have not yet told
5522 * the peer our rwnd has opened up. Note we grab the
5523 * value from the tcb from last time. Note too that
5524 * sack sending clears this when a sack is sent,
5525 * which is fine. Once we hit the rwnd_req, we then
5526 * will go to the sctp_user_rcvd() that will not
5527 * lock until it KNOWs it MUST send a WUP-SACK.
5529 freed_so_far = stcb->freed_by_sorcv_sincelast;
5530 stcb->freed_by_sorcv_sincelast = 0;
5534 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5535 control->do_not_ref_stcb == 0) {
5536 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5538 /* First lets get off the sinfo and sockaddr info */
5539 if ((sinfo != NULL) && (filling_sinfo != 0)) {
5540 sinfo->sinfo_stream = control->sinfo_stream;
5541 sinfo->sinfo_ssn = (uint16_t)control->mid;
5542 sinfo->sinfo_flags = control->sinfo_flags;
5543 sinfo->sinfo_ppid = control->sinfo_ppid;
5544 sinfo->sinfo_context = control->sinfo_context;
5545 sinfo->sinfo_timetolive = control->sinfo_timetolive;
5546 sinfo->sinfo_tsn = control->sinfo_tsn;
5547 sinfo->sinfo_cumtsn = control->sinfo_cumtsn;
5548 sinfo->sinfo_assoc_id = control->sinfo_assoc_id;
5549 nxt = TAILQ_NEXT(control, next);
5550 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5551 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5552 struct sctp_extrcvinfo *s_extra;
5554 s_extra = (struct sctp_extrcvinfo *)sinfo;
5557 s_extra->serinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5558 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5559 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5561 if (nxt->spec_flags & M_NOTIFICATION) {
5562 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5564 s_extra->serinfo_next_aid = nxt->sinfo_assoc_id;
5565 s_extra->serinfo_next_length = nxt->length;
5566 s_extra->serinfo_next_ppid = nxt->sinfo_ppid;
5567 s_extra->serinfo_next_stream = nxt->sinfo_stream;
5568 if (nxt->tail_mbuf != NULL) {
5569 if (nxt->end_added) {
5570 s_extra->serinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5575 * we explicitly 0 this, since the memcpy
5576 * got some other things beyond the older
5577 * sinfo_ that is on the control's structure
5581 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
5582 s_extra->serinfo_next_aid = 0;
5583 s_extra->serinfo_next_length = 0;
5584 s_extra->serinfo_next_ppid = 0;
5585 s_extra->serinfo_next_stream = 0;
5589 * update off the real current cum-ack, if we have an stcb.
5591 if ((control->do_not_ref_stcb == 0) && stcb)
5592 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5594 * mask off the high bits, we keep the actual chunk bits in
5597 sinfo->sinfo_flags &= 0x00ff;
5598 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5599 sinfo->sinfo_flags |= SCTP_UNORDERED;
5602 #ifdef SCTP_ASOCLOG_OF_TSNS
5604 int index, newindex;
5605 struct sctp_pcbtsn_rlog *entry;
5608 index = inp->readlog_index;
5609 newindex = index + 1;
5610 if (newindex >= SCTP_READ_LOG_SIZE) {
5613 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5614 entry = &inp->readlog[index];
5615 entry->vtag = control->sinfo_assoc_id;
5616 entry->strm = control->sinfo_stream;
5617 entry->seq = (uint16_t)control->mid;
5618 entry->sz = control->length;
5619 entry->flgs = control->sinfo_flags;
5622 if ((fromlen > 0) && (from != NULL)) {
5623 union sctp_sockstore store;
5626 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5629 len = sizeof(struct sockaddr_in6);
5630 store.sin6 = control->whoFrom->ro._l_addr.sin6;
5631 store.sin6.sin6_port = control->port_from;
5637 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) {
5638 len = sizeof(struct sockaddr_in6);
5639 in6_sin_2_v4mapsin6(&control->whoFrom->ro._l_addr.sin,
5641 store.sin6.sin6_port = control->port_from;
5643 len = sizeof(struct sockaddr_in);
5644 store.sin = control->whoFrom->ro._l_addr.sin;
5645 store.sin.sin_port = control->port_from;
5648 len = sizeof(struct sockaddr_in);
5649 store.sin = control->whoFrom->ro._l_addr.sin;
5650 store.sin.sin_port = control->port_from;
5658 memcpy(from, &store, min((size_t)fromlen, len));
5661 struct sockaddr_in6 lsa6, *from6;
5663 from6 = (struct sockaddr_in6 *)from;
5664 sctp_recover_scope_mac(from6, (&lsa6));
5669 SCTP_INP_READ_UNLOCK(inp);
5673 SOCKBUF_UNLOCK(&so->so_rcv);
5676 /* now copy out what data we can */
5678 /* copy out each mbuf in the chain up to length */
5682 /* Move out all we can */
5683 cp_len = (int)uio->uio_resid;
5684 my_len = (int)SCTP_BUF_LEN(m);
5685 if (cp_len > my_len) {
5686 /* not enough in this buf */
5690 SCTP_INP_READ_UNLOCK(inp);
5694 error = uiomove(mtod(m, char *), cp_len, uio);
5696 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5699 if ((control->do_not_ref_stcb == 0) && stcb &&
5700 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5704 /* error we are out of here */
5707 SCTP_INP_READ_LOCK(inp);
5709 if (cp_len == SCTP_BUF_LEN(m)) {
5710 if ((SCTP_BUF_NEXT(m) == NULL) &&
5711 (control->end_added)) {
5712 out_flags |= MSG_EOR;
5713 if ((control->do_not_ref_stcb == 0) &&
5714 (control->stcb != NULL) &&
5715 ((control->spec_flags & M_NOTIFICATION) == 0))
5716 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5718 if (control->spec_flags & M_NOTIFICATION) {
5719 out_flags |= MSG_NOTIFICATION;
5721 /* we ate up the mbuf */
5722 if (in_flags & MSG_PEEK) {
5724 m = SCTP_BUF_NEXT(m);
5725 copied_so_far += cp_len;
5727 /* dispose of the mbuf */
5728 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5729 sctp_sblog(&so->so_rcv,
5730 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5732 sctp_sbfree(control, stcb, &so->so_rcv, m);
5733 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5734 sctp_sblog(&so->so_rcv,
5735 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5737 copied_so_far += cp_len;
5738 freed_so_far += cp_len;
5739 freed_so_far += MSIZE;
5740 atomic_subtract_int(&control->length, cp_len);
5741 control->data = sctp_m_free(m);
5744 * been through it all, must hold sb
5745 * lock ok to null tail
5747 if (control->data == NULL) {
5749 if ((control->end_added == 0) ||
5750 (TAILQ_NEXT(control, next) == NULL)) {
5758 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5759 panic("Hmm we don't own the lock?");
5763 control->tail_mbuf = NULL;
5765 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5766 panic("end_added, nothing left and no MSG_EOR");
5772 /* Do we need to trim the mbuf? */
5773 if (control->spec_flags & M_NOTIFICATION) {
5774 out_flags |= MSG_NOTIFICATION;
5776 if ((in_flags & MSG_PEEK) == 0) {
5777 SCTP_BUF_RESV_UF(m, cp_len);
5778 SCTP_BUF_LEN(m) -= cp_len;
5779 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5780 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5782 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5783 if ((control->do_not_ref_stcb == 0) &&
5785 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5787 copied_so_far += cp_len;
5788 freed_so_far += cp_len;
5789 freed_so_far += MSIZE;
5790 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5791 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5792 SCTP_LOG_SBRESULT, 0);
5794 atomic_subtract_int(&control->length, cp_len);
5796 copied_so_far += cp_len;
5799 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5802 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5803 (control->do_not_ref_stcb == 0) &&
5804 (freed_so_far >= rwnd_req)) {
5805 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5807 } /* end while(m) */
5809 * At this point we have looked at it all and we either have
5810 * a MSG_EOR/or read all the user wants... <OR>
5811 * control->length == 0.
5813 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5814 /* we are done with this control */
5815 if (control->length == 0) {
5816 if (control->data) {
5818 panic("control->data not null at read eor?");
5820 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5821 sctp_m_freem(control->data);
5822 control->data = NULL;
5826 if (hold_rlock == 0) {
5827 SCTP_INP_READ_LOCK(inp);
5830 TAILQ_REMOVE(&inp->read_queue, control, next);
5831 /* Add back any hiddend data */
5832 if (control->held_length) {
5834 control->held_length = 0;
5835 wakeup_read_socket = 1;
5837 if (control->aux_data) {
5838 sctp_m_free(control->aux_data);
5839 control->aux_data = NULL;
5841 no_rcv_needed = control->do_not_ref_stcb;
5842 sctp_free_remote_addr(control->whoFrom);
5843 control->data = NULL;
5845 if (control->on_strm_q) {
5846 panic("About to free ctl:%p so:%p and its in %d",
5847 control, so, control->on_strm_q);
5850 sctp_free_a_readq(stcb, control);
5852 if ((freed_so_far >= rwnd_req) &&
5853 (no_rcv_needed == 0))
5854 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5858 * The user did not read all of this
5859 * message, turn off the returned MSG_EOR
5860 * since we are leaving more behind on the
5864 if (control->end_added &&
5865 (control->data == NULL) &&
5866 (control->tail_mbuf == NULL)) {
5867 panic("Gak, control->length is corrupt?");
5870 no_rcv_needed = control->do_not_ref_stcb;
5871 out_flags &= ~MSG_EOR;
5874 if (out_flags & MSG_EOR) {
5877 if ((uio->uio_resid == 0) ||
5879 (copied_so_far >= (uint32_t)max(so->so_rcv.sb_lowat, 1)))) {
5883 * If I hit here the receiver wants more and this message is
5884 * NOT done (pd-api). So two questions. Can we block? if not
5885 * we are done. Did the user NOT set MSG_WAITALL?
5887 if (block_allowed == 0) {
5891 * We need to wait for more data a few things: - We don't
5892 * sbunlock() so we don't get someone else reading. - We
5893 * must be sure to account for the case where what is added
5894 * is NOT to our control when we wakeup.
5898 * Do we need to tell the transport a rwnd update might be
5899 * needed before we go to sleep?
5901 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5902 ((freed_so_far >= rwnd_req) &&
5903 (control->do_not_ref_stcb == 0) &&
5904 (no_rcv_needed == 0))) {
5905 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5908 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5911 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5914 if (hold_rlock == 1) {
5915 SCTP_INP_READ_UNLOCK(inp);
5918 if (hold_sblock == 0) {
5919 SOCKBUF_LOCK(&so->so_rcv);
5922 if ((copied_so_far) && (control->length == 0) &&
5923 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5926 if (so->so_rcv.sb_cc <= control->held_length) {
5927 error = sbwait(&so->so_rcv);
5931 control->held_length = 0;
5934 SOCKBUF_UNLOCK(&so->so_rcv);
5937 if (control->length == 0) {
5938 /* still nothing here */
5939 if (control->end_added == 1) {
5940 /* he aborted, or is done i.e.did a shutdown */
5941 out_flags |= MSG_EOR;
5942 if (control->pdapi_aborted) {
5943 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5944 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5946 out_flags |= MSG_TRUNC;
5948 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5949 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5951 goto done_with_control;
5953 if (so->so_rcv.sb_cc > held_length) {
5954 control->held_length = so->so_rcv.sb_cc;
5957 goto wait_some_more;
5958 } else if (control->data == NULL) {
5960 * we must re-sync since data is probably being
5963 SCTP_INP_READ_LOCK(inp);
5964 if ((control->length > 0) && (control->data == NULL)) {
5966 * big trouble.. we have the lock and its
5970 panic("Impossible data==NULL length !=0");
5972 out_flags |= MSG_EOR;
5973 out_flags |= MSG_TRUNC;
5974 control->length = 0;
5975 SCTP_INP_READ_UNLOCK(inp);
5976 goto done_with_control;
5978 SCTP_INP_READ_UNLOCK(inp);
5979 /* We will fall around to get more data */
5984 * Give caller back the mbuf chain,
5985 * store in uio_resid the length
5987 wakeup_read_socket = 0;
5988 if ((control->end_added == 0) ||
5989 (TAILQ_NEXT(control, next) == NULL)) {
5990 /* Need to get rlock */
5991 if (hold_rlock == 0) {
5992 SCTP_INP_READ_LOCK(inp);
5996 if (control->end_added) {
5997 out_flags |= MSG_EOR;
5998 if ((control->do_not_ref_stcb == 0) &&
5999 (control->stcb != NULL) &&
6000 ((control->spec_flags & M_NOTIFICATION) == 0))
6001 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
6003 if (control->spec_flags & M_NOTIFICATION) {
6004 out_flags |= MSG_NOTIFICATION;
6006 uio->uio_resid = control->length;
6007 *mp = control->data;
6010 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6011 sctp_sblog(&so->so_rcv,
6012 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
6014 sctp_sbfree(control, stcb, &so->so_rcv, m);
6015 freed_so_far += SCTP_BUF_LEN(m);
6016 freed_so_far += MSIZE;
6017 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
6018 sctp_sblog(&so->so_rcv,
6019 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
6021 m = SCTP_BUF_NEXT(m);
6023 control->data = control->tail_mbuf = NULL;
6024 control->length = 0;
6025 if (out_flags & MSG_EOR) {
6026 /* Done with this control */
6027 goto done_with_control;
6031 if (hold_rlock == 1) {
6032 SCTP_INP_READ_UNLOCK(inp);
6035 if (hold_sblock == 1) {
6036 SOCKBUF_UNLOCK(&so->so_rcv);
6039 sbunlock(&so->so_rcv);
6044 SOCKBUF_UNLOCK(&so->so_rcv);
6047 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
6048 if ((freed_so_far >= rwnd_req) &&
6049 (control && (control->do_not_ref_stcb == 0)) &&
6050 (no_rcv_needed == 0))
6051 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
6055 *msg_flags = out_flags;
6057 if (((out_flags & MSG_EOR) == 0) &&
6058 ((in_flags & MSG_PEEK) == 0) &&
6060 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
6061 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
6062 struct sctp_extrcvinfo *s_extra;
6064 s_extra = (struct sctp_extrcvinfo *)sinfo;
6065 s_extra->serinfo_next_flags = SCTP_NO_NEXT_MSG;
6067 if (hold_rlock == 1) {
6068 SCTP_INP_READ_UNLOCK(inp);
6071 SOCKBUF_UNLOCK(&so->so_rcv);
6074 sbunlock(&so->so_rcv);
6076 if (freecnt_applied) {
6078 * The lock on the socket buffer protects us so the free
6079 * code will stop. But since we used the socketbuf lock and
6080 * the sender uses the tcb_lock to increment, we need to use
6081 * the atomic add to the refcnt.
6085 panic("stcb for refcnt has gone NULL?");
6091 /* Save the value back for next time */
6092 stcb->freed_by_sorcv_sincelast = freed_so_far;
6093 atomic_add_int(&stcb->asoc.refcnt, -1);
6095 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
6097 sctp_misc_ints(SCTP_SORECV_DONE,
6099 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6103 sctp_misc_ints(SCTP_SORECV_DONE,
6105 (uint32_t)((uio) ? (slen - uio->uio_resid) : slen),
6111 if (wakeup_read_socket) {
6112 sctp_sorwakeup(inp, so);
6118 #ifdef SCTP_MBUF_LOGGING
6120 sctp_m_free(struct mbuf *m)
6122 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
6123 sctp_log_mb(m, SCTP_MBUF_IFREE);
6129 sctp_m_freem(struct mbuf *mb)
6132 mb = sctp_m_free(mb);
6138 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
6141 * Given a local address. For all associations that holds the
6142 * address, request a peer-set-primary.
6144 struct sctp_ifa *ifa;
6145 struct sctp_laddr *wi;
6147 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
6149 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
6150 return (EADDRNOTAVAIL);
6153 * Now that we have the ifa we must awaken the iterator with this
6156 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
6158 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
6161 /* Now incr the count and int wi structure */
6162 SCTP_INCR_LADDR_COUNT();
6163 bzero(wi, sizeof(*wi));
6164 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
6166 wi->action = SCTP_SET_PRIM_ADDR;
6167 atomic_add_int(&ifa->refcount, 1);
6169 /* Now add it to the work queue */
6170 SCTP_WQ_ADDR_LOCK();
6172 * Should this really be a tailq? As it is we will process the
6175 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6176 SCTP_WQ_ADDR_UNLOCK();
6177 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6178 (struct sctp_inpcb *)NULL,
6179 (struct sctp_tcb *)NULL,
6180 (struct sctp_nets *)NULL);
6186 sctp_soreceive(struct socket *so,
6187 struct sockaddr **psa,
6190 struct mbuf **controlp,
6194 uint8_t sockbuf[256];
6195 struct sockaddr *from;
6196 struct sctp_extrcvinfo sinfo;
6197 int filling_sinfo = 1;
6198 struct sctp_inpcb *inp;
6200 inp = (struct sctp_inpcb *)so->so_pcb;
6201 /* pickup the assoc we are reading from */
6203 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6206 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6207 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6208 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6209 (controlp == NULL)) {
6210 /* user does not want the sndrcv ctl */
6214 from = (struct sockaddr *)sockbuf;
6215 fromlen = sizeof(sockbuf);
6222 if (filling_sinfo) {
6223 memset(&sinfo, 0, sizeof(struct sctp_extrcvinfo));
6225 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6226 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6227 if (controlp != NULL) {
6228 /* copy back the sinfo in a CMSG format */
6230 *controlp = sctp_build_ctl_nchunk(inp,
6231 (struct sctp_sndrcvinfo *)&sinfo);
6236 /* copy back the address info */
6237 if (from && from->sa_len) {
6238 *psa = sodupsockaddr(from, M_NOWAIT);
6251 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6252 int totaddr, int *error)
6256 struct sctp_inpcb *inp;
6257 struct sockaddr *sa;
6260 struct sockaddr_in *sin;
6263 struct sockaddr_in6 *sin6;
6267 inp = stcb->sctp_ep;
6269 for (i = 0; i < totaddr; i++) {
6270 switch (sa->sa_family) {
6273 incr = sizeof(struct sockaddr_in);
6274 sin = (struct sockaddr_in *)sa;
6275 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6276 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6277 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6278 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6279 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6280 SCTP_FROM_SCTPUTIL + SCTP_LOC_7);
6284 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6285 SCTP_DONOT_SETSCOPE,
6286 SCTP_ADDR_IS_CONFIRMED)) {
6287 /* assoc gone no un-lock */
6288 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6289 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6290 SCTP_FROM_SCTPUTIL + SCTP_LOC_8);
6299 incr = sizeof(struct sockaddr_in6);
6300 sin6 = (struct sockaddr_in6 *)sa;
6301 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6302 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6303 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6304 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6305 SCTP_FROM_SCTPUTIL + SCTP_LOC_9);
6309 if (sctp_add_remote_addr(stcb, sa, NULL, stcb->asoc.port,
6310 SCTP_DONOT_SETSCOPE,
6311 SCTP_ADDR_IS_CONFIRMED)) {
6312 /* assoc gone no un-lock */
6313 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6314 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC,
6315 SCTP_FROM_SCTPUTIL + SCTP_LOC_10);
6325 sa = (struct sockaddr *)((caddr_t)sa + incr);
6332 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6333 unsigned int *totaddr,
6334 unsigned int *num_v4, unsigned int *num_v6, int *error,
6335 unsigned int limit, int *bad_addr)
6337 struct sockaddr *sa;
6338 struct sctp_tcb *stcb = NULL;
6339 unsigned int incr, at, i;
6343 *error = *num_v6 = *num_v4 = 0;
6344 /* account and validate addresses */
6345 for (i = 0; i < *totaddr; i++) {
6346 switch (sa->sa_family) {
6349 incr = (unsigned int)sizeof(struct sockaddr_in);
6350 if (sa->sa_len != incr) {
6351 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6362 struct sockaddr_in6 *sin6;
6364 sin6 = (struct sockaddr_in6 *)sa;
6365 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6366 /* Must be non-mapped for connectx */
6367 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6372 incr = (unsigned int)sizeof(struct sockaddr_in6);
6373 if (sa->sa_len != incr) {
6374 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6389 if (i == *totaddr) {
6392 SCTP_INP_INCR_REF(inp);
6393 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6395 /* Already have or am bring up an association */
6398 SCTP_INP_DECR_REF(inp);
6400 if ((at + incr) > limit) {
6404 sa = (struct sockaddr *)((caddr_t)sa + incr);
6406 return ((struct sctp_tcb *)NULL);
6410 * sctp_bindx(ADD) for one address.
6411 * assumes all arguments are valid/checked by caller.
6414 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6415 struct sockaddr *sa, sctp_assoc_t assoc_id,
6416 uint32_t vrf_id, int *error, void *p)
6418 struct sockaddr *addr_touse;
6419 #if defined(INET) && defined(INET6)
6420 struct sockaddr_in sin;
6423 /* see if we're bound all already! */
6424 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6425 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6431 if (sa->sa_family == AF_INET6) {
6433 struct sockaddr_in6 *sin6;
6436 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6437 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6441 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6442 /* can only bind v6 on PF_INET6 sockets */
6443 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6448 sin6 = (struct sockaddr_in6 *)addr_touse;
6449 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6450 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6451 SCTP_IPV6_V6ONLY(inp)) {
6452 /* can't bind v4-mapped on PF_INET sockets */
6453 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6457 in6_sin6_2_sin(&sin, sin6);
6458 addr_touse = (struct sockaddr *)&sin;
6464 if (sa->sa_family == AF_INET) {
6465 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6466 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6470 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6471 SCTP_IPV6_V6ONLY(inp)) {
6472 /* can't bind v4 on PF_INET sockets */
6473 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6479 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6481 /* Can't get proc for Net/Open BSD */
6482 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6486 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6490 * No locks required here since bind and mgmt_ep_sa all do their own
6491 * locking. If we do something for the FIX: below we may need to
6492 * lock in that case.
6494 if (assoc_id == 0) {
6495 /* add the address */
6496 struct sctp_inpcb *lep;
6497 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6499 /* validate the incoming port */
6500 if ((lsin->sin_port != 0) &&
6501 (lsin->sin_port != inp->sctp_lport)) {
6502 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6506 /* user specified 0 port, set it to existing port */
6507 lsin->sin_port = inp->sctp_lport;
6510 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6513 * We must decrement the refcount since we have the
6514 * ep already and are binding. No remove going on
6517 SCTP_INP_DECR_REF(lep);
6520 /* already bound to it.. ok */
6522 } else if (lep == NULL) {
6523 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6524 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6525 SCTP_ADD_IP_ADDRESS,
6528 *error = EADDRINUSE;
6534 * FIX: decide whether we allow assoc based bindx
6540 * sctp_bindx(DELETE) for one address.
6541 * assumes all arguments are valid/checked by caller.
6544 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6545 struct sockaddr *sa, sctp_assoc_t assoc_id,
6546 uint32_t vrf_id, int *error)
6548 struct sockaddr *addr_touse;
6549 #if defined(INET) && defined(INET6)
6550 struct sockaddr_in sin;
6553 /* see if we're bound all already! */
6554 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6555 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6561 if (sa->sa_family == AF_INET6) {
6563 struct sockaddr_in6 *sin6;
6566 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6567 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6571 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6572 /* can only bind v6 on PF_INET6 sockets */
6573 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6578 sin6 = (struct sockaddr_in6 *)addr_touse;
6579 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6580 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6581 SCTP_IPV6_V6ONLY(inp)) {
6582 /* can't bind mapped-v4 on PF_INET sockets */
6583 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6587 in6_sin6_2_sin(&sin, sin6);
6588 addr_touse = (struct sockaddr *)&sin;
6594 if (sa->sa_family == AF_INET) {
6595 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6596 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6600 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6601 SCTP_IPV6_V6ONLY(inp)) {
6602 /* can't bind v4 on PF_INET sockets */
6603 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6610 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6611 * below is ever changed we may need to lock before calling
6612 * association level binding.
6614 if (assoc_id == 0) {
6615 /* delete the address */
6616 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6617 SCTP_DEL_IP_ADDRESS,
6621 * FIX: decide whether we allow assoc based bindx
6627 * returns the valid local address count for an assoc, taking into account
6631 sctp_local_addr_count(struct sctp_tcb *stcb)
6635 int ipv4_local_scope, ipv4_addr_legal;
6638 int local_scope, site_scope, ipv6_addr_legal;
6640 struct sctp_vrf *vrf;
6641 struct sctp_ifn *sctp_ifn;
6642 struct sctp_ifa *sctp_ifa;
6645 /* Turn on all the appropriate scopes */
6646 loopback_scope = stcb->asoc.scope.loopback_scope;
6648 ipv4_local_scope = stcb->asoc.scope.ipv4_local_scope;
6649 ipv4_addr_legal = stcb->asoc.scope.ipv4_addr_legal;
6652 local_scope = stcb->asoc.scope.local_scope;
6653 site_scope = stcb->asoc.scope.site_scope;
6654 ipv6_addr_legal = stcb->asoc.scope.ipv6_addr_legal;
6656 SCTP_IPI_ADDR_RLOCK();
6657 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6659 /* no vrf, no addresses */
6660 SCTP_IPI_ADDR_RUNLOCK();
6663 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6665 * bound all case: go through all ifns on the vrf
6667 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6668 if ((loopback_scope == 0) &&
6669 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6672 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6673 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6675 switch (sctp_ifa->address.sa.sa_family) {
6678 if (ipv4_addr_legal) {
6679 struct sockaddr_in *sin;
6681 sin = &sctp_ifa->address.sin;
6682 if (sin->sin_addr.s_addr == 0) {
6689 if (prison_check_ip4(stcb->sctp_ep->ip_inp.inp.inp_cred,
6690 &sin->sin_addr) != 0) {
6693 if ((ipv4_local_scope == 0) &&
6694 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6697 /* count this one */
6706 if (ipv6_addr_legal) {
6707 struct sockaddr_in6 *sin6;
6709 sin6 = &sctp_ifa->address.sin6;
6710 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6713 if (prison_check_ip6(stcb->sctp_ep->ip_inp.inp.inp_cred,
6714 &sin6->sin6_addr) != 0) {
6717 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6718 if (local_scope == 0)
6720 if (sin6->sin6_scope_id == 0) {
6721 if (sa6_recoverscope(sin6) != 0)
6734 if ((site_scope == 0) &&
6735 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6738 /* count this one */
6753 struct sctp_laddr *laddr;
6755 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6757 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6760 /* count this one */
6764 SCTP_IPI_ADDR_RUNLOCK();
6768 #if defined(SCTP_LOCAL_TRACE_BUF)
6771 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)
6773 uint32_t saveindex, newindex;
6776 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6777 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6780 newindex = saveindex + 1;
6782 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6783 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6786 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6787 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6788 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6789 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6790 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6791 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6792 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6793 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6798 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *inp,
6799 const struct sockaddr *sa SCTP_UNUSED, void *ctx SCTP_UNUSED)
6803 struct ip6_hdr *ip6;
6805 struct mbuf *sp, *last;
6806 struct udphdr *uhdr;
6809 if ((m->m_flags & M_PKTHDR) == 0) {
6810 /* Can't handle one that is not a pkt hdr */
6813 /* Pull the src port */
6814 iph = mtod(m, struct ip *);
6815 uhdr = (struct udphdr *)((caddr_t)iph + off);
6816 port = uhdr->uh_sport;
6818 * Split out the mbuf chain. Leave the IP header in m, place the
6821 sp = m_split(m, off, M_NOWAIT);
6823 /* Gak, drop packet, we can't do a split */
6826 if (sp->m_pkthdr.len < sizeof(struct udphdr) + sizeof(struct sctphdr)) {
6827 /* Gak, packet can't have an SCTP header in it - too small */
6831 /* Now pull up the UDP header and SCTP header together */
6832 sp = m_pullup(sp, sizeof(struct udphdr) + sizeof(struct sctphdr));
6834 /* Gak pullup failed */
6837 /* Trim out the UDP header */
6838 m_adj(sp, sizeof(struct udphdr));
6840 /* Now reconstruct the mbuf chain */
6841 for (last = m; last->m_next; last = last->m_next);
6843 m->m_pkthdr.len += sp->m_pkthdr.len;
6845 * The CSUM_DATA_VALID flags indicates that the HW checked the UDP
6846 * checksum and it was valid. Since CSUM_DATA_VALID ==
6847 * CSUM_SCTP_VALID this would imply that the HW also verified the
6848 * SCTP checksum. Therefore, clear the bit.
6850 SCTPDBG(SCTP_DEBUG_CRCOFFLOAD,
6851 "sctp_recv_udp_tunneled_packet(): Packet of length %d received on %s with csum_flags 0x%b.\n",
6853 if_name(m->m_pkthdr.rcvif),
6854 (int)m->m_pkthdr.csum_flags, CSUM_BITS);
6855 m->m_pkthdr.csum_flags &= ~CSUM_DATA_VALID;
6856 iph = mtod(m, struct ip *);
6857 switch (iph->ip_v) {
6860 iph->ip_len = htons(ntohs(iph->ip_len) - sizeof(struct udphdr));
6861 sctp_input_with_port(m, off, port);
6865 case IPV6_VERSION >> 4:
6866 ip6 = mtod(m, struct ip6_hdr *);
6867 ip6->ip6_plen = htons(ntohs(ip6->ip6_plen) - sizeof(struct udphdr));
6868 sctp6_input_with_port(&m, &off, port);
6882 sctp_recv_icmp_tunneled_packet(int cmd, struct sockaddr *sa, void *vip, void *ctx SCTP_UNUSED)
6884 struct ip *outer_ip, *inner_ip;
6888 struct sctp_inpcb *inp;
6889 struct sctp_tcb *stcb;
6890 struct sctp_nets *net;
6891 struct sctp_init_chunk *ch;
6892 struct sockaddr_in src, dst;
6895 inner_ip = (struct ip *)vip;
6896 icmp = (struct icmp *)((caddr_t)inner_ip -
6897 (sizeof(struct icmp) - sizeof(struct ip)));
6898 outer_ip = (struct ip *)((caddr_t)icmp - sizeof(struct ip));
6899 if (ntohs(outer_ip->ip_len) <
6900 sizeof(struct ip) + 8 + (inner_ip->ip_hl << 2) + sizeof(struct udphdr) + 8) {
6903 udp = (struct udphdr *)((caddr_t)inner_ip + (inner_ip->ip_hl << 2));
6904 sh = (struct sctphdr *)(udp + 1);
6905 memset(&src, 0, sizeof(struct sockaddr_in));
6906 src.sin_family = AF_INET;
6907 src.sin_len = sizeof(struct sockaddr_in);
6908 src.sin_port = sh->src_port;
6909 src.sin_addr = inner_ip->ip_src;
6910 memset(&dst, 0, sizeof(struct sockaddr_in));
6911 dst.sin_family = AF_INET;
6912 dst.sin_len = sizeof(struct sockaddr_in);
6913 dst.sin_port = sh->dest_port;
6914 dst.sin_addr = inner_ip->ip_dst;
6916 * 'dst' holds the dest of the packet that failed to be sent. 'src'
6917 * holds our local endpoint address. Thus we reverse the dst and the
6918 * src in the lookup.
6922 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
6923 (struct sockaddr *)&src,
6925 SCTP_DEFAULT_VRFID);
6926 if ((stcb != NULL) &&
6929 /* Check the UDP port numbers */
6930 if ((udp->uh_dport != net->port) ||
6931 (udp->uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
6932 SCTP_TCB_UNLOCK(stcb);
6935 /* Check the verification tag */
6936 if (ntohl(sh->v_tag) != 0) {
6938 * This must be the verification tag used for
6939 * sending out packets. We don't consider packets
6940 * reflecting the verification tag.
6942 if (ntohl(sh->v_tag) != stcb->asoc.peer_vtag) {
6943 SCTP_TCB_UNLOCK(stcb);
6947 if (ntohs(outer_ip->ip_len) >=
6949 8 + (inner_ip->ip_hl << 2) + 8 + 20) {
6951 * In this case we can check if we got an
6952 * INIT chunk and if the initiate tag
6955 ch = (struct sctp_init_chunk *)(sh + 1);
6956 if ((ch->ch.chunk_type != SCTP_INITIATION) ||
6957 (ntohl(ch->init.initiate_tag) != stcb->asoc.my_vtag)) {
6958 SCTP_TCB_UNLOCK(stcb);
6962 SCTP_TCB_UNLOCK(stcb);
6966 type = icmp->icmp_type;
6967 code = icmp->icmp_code;
6968 if ((type == ICMP_UNREACH) &&
6969 (code == ICMP_UNREACH_PORT)) {
6970 code = ICMP_UNREACH_PROTOCOL;
6972 sctp_notify(inp, stcb, net, type, code,
6973 ntohs(inner_ip->ip_len),
6974 ntohs(icmp->icmp_nextmtu));
6976 if ((stcb == NULL) && (inp != NULL)) {
6977 /* reduce ref-count */
6978 SCTP_INP_WLOCK(inp);
6979 SCTP_INP_DECR_REF(inp);
6980 SCTP_INP_WUNLOCK(inp);
6983 SCTP_TCB_UNLOCK(stcb);
6992 sctp_recv_icmp6_tunneled_packet(int cmd, struct sockaddr *sa, void *d, void *ctx SCTP_UNUSED)
6994 struct ip6ctlparam *ip6cp;
6995 struct sctp_inpcb *inp;
6996 struct sctp_tcb *stcb;
6997 struct sctp_nets *net;
7000 struct sockaddr_in6 src, dst;
7003 ip6cp = (struct ip6ctlparam *)d;
7005 * XXX: We assume that when IPV6 is non NULL, M and OFF are valid.
7007 if (ip6cp->ip6c_m == NULL) {
7011 * Check if we can safely examine the ports and the verification tag
7012 * of the SCTP common header.
7014 if (ip6cp->ip6c_m->m_pkthdr.len <
7015 ip6cp->ip6c_off + sizeof(struct udphdr) + offsetof(struct sctphdr, checksum)) {
7018 /* Copy out the UDP header. */
7019 memset(&udp, 0, sizeof(struct udphdr));
7020 m_copydata(ip6cp->ip6c_m,
7022 sizeof(struct udphdr),
7024 /* Copy out the port numbers and the verification tag. */
7025 memset(&sh, 0, sizeof(struct sctphdr));
7026 m_copydata(ip6cp->ip6c_m,
7027 ip6cp->ip6c_off + sizeof(struct udphdr),
7028 sizeof(uint16_t) + sizeof(uint16_t) + sizeof(uint32_t),
7030 memset(&src, 0, sizeof(struct sockaddr_in6));
7031 src.sin6_family = AF_INET6;
7032 src.sin6_len = sizeof(struct sockaddr_in6);
7033 src.sin6_port = sh.src_port;
7034 src.sin6_addr = ip6cp->ip6c_ip6->ip6_src;
7035 if (in6_setscope(&src.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7038 memset(&dst, 0, sizeof(struct sockaddr_in6));
7039 dst.sin6_family = AF_INET6;
7040 dst.sin6_len = sizeof(struct sockaddr_in6);
7041 dst.sin6_port = sh.dest_port;
7042 dst.sin6_addr = ip6cp->ip6c_ip6->ip6_dst;
7043 if (in6_setscope(&dst.sin6_addr, ip6cp->ip6c_m->m_pkthdr.rcvif, NULL) != 0) {
7048 stcb = sctp_findassociation_addr_sa((struct sockaddr *)&dst,
7049 (struct sockaddr *)&src,
7050 &inp, &net, 1, SCTP_DEFAULT_VRFID);
7051 if ((stcb != NULL) &&
7054 /* Check the UDP port numbers */
7055 if ((udp.uh_dport != net->port) ||
7056 (udp.uh_sport != htons(SCTP_BASE_SYSCTL(sctp_udp_tunneling_port)))) {
7057 SCTP_TCB_UNLOCK(stcb);
7060 /* Check the verification tag */
7061 if (ntohl(sh.v_tag) != 0) {
7063 * This must be the verification tag used for
7064 * sending out packets. We don't consider packets
7065 * reflecting the verification tag.
7067 if (ntohl(sh.v_tag) != stcb->asoc.peer_vtag) {
7068 SCTP_TCB_UNLOCK(stcb);
7072 if (ip6cp->ip6c_m->m_pkthdr.len >=
7073 ip6cp->ip6c_off + sizeof(struct udphdr) +
7074 sizeof(struct sctphdr) +
7075 sizeof(struct sctp_chunkhdr) +
7076 offsetof(struct sctp_init, a_rwnd)) {
7078 * In this case we can check if we got an
7079 * INIT chunk and if the initiate tag
7082 uint32_t initiate_tag;
7085 m_copydata(ip6cp->ip6c_m,
7087 sizeof(struct udphdr) +
7088 sizeof(struct sctphdr),
7090 (caddr_t)&chunk_type);
7091 m_copydata(ip6cp->ip6c_m,
7093 sizeof(struct udphdr) +
7094 sizeof(struct sctphdr) +
7095 sizeof(struct sctp_chunkhdr),
7097 (caddr_t)&initiate_tag);
7098 if ((chunk_type != SCTP_INITIATION) ||
7099 (ntohl(initiate_tag) != stcb->asoc.my_vtag)) {
7100 SCTP_TCB_UNLOCK(stcb);
7104 SCTP_TCB_UNLOCK(stcb);
7108 type = ip6cp->ip6c_icmp6->icmp6_type;
7109 code = ip6cp->ip6c_icmp6->icmp6_code;
7110 if ((type == ICMP6_DST_UNREACH) &&
7111 (code == ICMP6_DST_UNREACH_NOPORT)) {
7112 type = ICMP6_PARAM_PROB;
7113 code = ICMP6_PARAMPROB_NEXTHEADER;
7115 sctp6_notify(inp, stcb, net, type, code,
7116 (uint16_t)ntohl(ip6cp->ip6c_icmp6->icmp6_mtu));
7118 if ((stcb == NULL) && (inp != NULL)) {
7119 /* reduce inp's ref-count */
7120 SCTP_INP_WLOCK(inp);
7121 SCTP_INP_DECR_REF(inp);
7122 SCTP_INP_WUNLOCK(inp);
7125 SCTP_TCB_UNLOCK(stcb);
7132 sctp_over_udp_stop(void)
7135 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7139 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7140 soclose(SCTP_BASE_INFO(udp4_tun_socket));
7141 SCTP_BASE_INFO(udp4_tun_socket) = NULL;
7145 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7146 soclose(SCTP_BASE_INFO(udp6_tun_socket));
7147 SCTP_BASE_INFO(udp6_tun_socket) = NULL;
7153 sctp_over_udp_start(void)
7158 struct sockaddr_in sin;
7161 struct sockaddr_in6 sin6;
7164 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
7167 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
7168 if (ntohs(port) == 0) {
7169 /* Must have a port set */
7173 if (SCTP_BASE_INFO(udp4_tun_socket) != NULL) {
7174 /* Already running -- must stop first */
7179 if (SCTP_BASE_INFO(udp6_tun_socket) != NULL) {
7180 /* Already running -- must stop first */
7185 if ((ret = socreate(PF_INET, &SCTP_BASE_INFO(udp4_tun_socket),
7186 SOCK_DGRAM, IPPROTO_UDP,
7187 curthread->td_ucred, curthread))) {
7188 sctp_over_udp_stop();
7191 /* Call the special UDP hook. */
7192 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp4_tun_socket),
7193 sctp_recv_udp_tunneled_packet,
7194 sctp_recv_icmp_tunneled_packet,
7196 sctp_over_udp_stop();
7199 /* Ok, we have a socket, bind it to the port. */
7200 memset(&sin, 0, sizeof(struct sockaddr_in));
7201 sin.sin_len = sizeof(struct sockaddr_in);
7202 sin.sin_family = AF_INET;
7203 sin.sin_port = htons(port);
7204 if ((ret = sobind(SCTP_BASE_INFO(udp4_tun_socket),
7205 (struct sockaddr *)&sin, curthread))) {
7206 sctp_over_udp_stop();
7211 if ((ret = socreate(PF_INET6, &SCTP_BASE_INFO(udp6_tun_socket),
7212 SOCK_DGRAM, IPPROTO_UDP,
7213 curthread->td_ucred, curthread))) {
7214 sctp_over_udp_stop();
7217 /* Call the special UDP hook. */
7218 if ((ret = udp_set_kernel_tunneling(SCTP_BASE_INFO(udp6_tun_socket),
7219 sctp_recv_udp_tunneled_packet,
7220 sctp_recv_icmp6_tunneled_packet,
7222 sctp_over_udp_stop();
7225 /* Ok, we have a socket, bind it to the port. */
7226 memset(&sin6, 0, sizeof(struct sockaddr_in6));
7227 sin6.sin6_len = sizeof(struct sockaddr_in6);
7228 sin6.sin6_family = AF_INET6;
7229 sin6.sin6_port = htons(port);
7230 if ((ret = sobind(SCTP_BASE_INFO(udp6_tun_socket),
7231 (struct sockaddr *)&sin6, curthread))) {
7232 sctp_over_udp_stop();