2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
3 * Copyright (c) 2008-2011, by Randall Stewart. All rights reserved.
4 * Copyright (c) 2008-2011, 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 /* $KAME: sctputil.c,v 1.37 2005/03/07 23:26:09 itojun Exp $ */
35 #include <sys/cdefs.h>
36 __FBSDID("$FreeBSD$");
38 #include <netinet/sctp_os.h>
39 #include <netinet/sctp_pcb.h>
40 #include <netinet/sctputil.h>
41 #include <netinet/sctp_var.h>
42 #include <netinet/sctp_sysctl.h>
45 #include <netinet/sctp_header.h>
46 #include <netinet/sctp_output.h>
47 #include <netinet/sctp_uio.h>
48 #include <netinet/sctp_timer.h>
49 #include <netinet/sctp_indata.h>/* for sctp_deliver_data() */
50 #include <netinet/sctp_auth.h>
51 #include <netinet/sctp_asconf.h>
52 #include <netinet/sctp_bsd_addr.h>
56 #define KTR_SCTP KTR_SUBSYS
59 extern struct sctp_cc_functions sctp_cc_functions[];
60 extern struct sctp_ss_functions sctp_ss_functions[];
63 sctp_sblog(struct sockbuf *sb,
64 struct sctp_tcb *stcb, int from, int incr)
66 struct sctp_cwnd_log sctp_clog;
68 sctp_clog.x.sb.stcb = stcb;
69 sctp_clog.x.sb.so_sbcc = sb->sb_cc;
71 sctp_clog.x.sb.stcb_sbcc = stcb->asoc.sb_cc;
73 sctp_clog.x.sb.stcb_sbcc = 0;
74 sctp_clog.x.sb.incr = incr;
75 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
78 sctp_clog.x.misc.log1,
79 sctp_clog.x.misc.log2,
80 sctp_clog.x.misc.log3,
81 sctp_clog.x.misc.log4);
85 sctp_log_closing(struct sctp_inpcb *inp, struct sctp_tcb *stcb, int16_t loc)
87 struct sctp_cwnd_log sctp_clog;
89 sctp_clog.x.close.inp = (void *)inp;
90 sctp_clog.x.close.sctp_flags = inp->sctp_flags;
92 sctp_clog.x.close.stcb = (void *)stcb;
93 sctp_clog.x.close.state = (uint16_t) stcb->asoc.state;
95 sctp_clog.x.close.stcb = 0;
96 sctp_clog.x.close.state = 0;
98 sctp_clog.x.close.loc = loc;
99 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
100 SCTP_LOG_EVENT_CLOSE,
102 sctp_clog.x.misc.log1,
103 sctp_clog.x.misc.log2,
104 sctp_clog.x.misc.log3,
105 sctp_clog.x.misc.log4);
110 rto_logging(struct sctp_nets *net, int from)
112 struct sctp_cwnd_log sctp_clog;
114 memset(&sctp_clog, 0, sizeof(sctp_clog));
115 sctp_clog.x.rto.net = (void *)net;
116 sctp_clog.x.rto.rtt = net->rtt / 1000;
117 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
120 sctp_clog.x.misc.log1,
121 sctp_clog.x.misc.log2,
122 sctp_clog.x.misc.log3,
123 sctp_clog.x.misc.log4);
127 sctp_log_strm_del_alt(struct sctp_tcb *stcb, uint32_t tsn, uint16_t sseq, uint16_t stream, int from)
129 struct sctp_cwnd_log sctp_clog;
131 sctp_clog.x.strlog.stcb = stcb;
132 sctp_clog.x.strlog.n_tsn = tsn;
133 sctp_clog.x.strlog.n_sseq = sseq;
134 sctp_clog.x.strlog.e_tsn = 0;
135 sctp_clog.x.strlog.e_sseq = 0;
136 sctp_clog.x.strlog.strm = stream;
137 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
140 sctp_clog.x.misc.log1,
141 sctp_clog.x.misc.log2,
142 sctp_clog.x.misc.log3,
143 sctp_clog.x.misc.log4);
147 sctp_log_nagle_event(struct sctp_tcb *stcb, int action)
149 struct sctp_cwnd_log sctp_clog;
151 sctp_clog.x.nagle.stcb = (void *)stcb;
152 sctp_clog.x.nagle.total_flight = stcb->asoc.total_flight;
153 sctp_clog.x.nagle.total_in_queue = stcb->asoc.total_output_queue_size;
154 sctp_clog.x.nagle.count_in_queue = stcb->asoc.chunks_on_out_queue;
155 sctp_clog.x.nagle.count_in_flight = stcb->asoc.total_flight_count;
156 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
157 SCTP_LOG_EVENT_NAGLE,
159 sctp_clog.x.misc.log1,
160 sctp_clog.x.misc.log2,
161 sctp_clog.x.misc.log3,
162 sctp_clog.x.misc.log4);
166 sctp_log_sack(uint32_t old_cumack, uint32_t cumack, uint32_t tsn, uint16_t gaps, uint16_t dups, int from)
168 struct sctp_cwnd_log sctp_clog;
170 sctp_clog.x.sack.cumack = cumack;
171 sctp_clog.x.sack.oldcumack = old_cumack;
172 sctp_clog.x.sack.tsn = tsn;
173 sctp_clog.x.sack.numGaps = gaps;
174 sctp_clog.x.sack.numDups = dups;
175 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
178 sctp_clog.x.misc.log1,
179 sctp_clog.x.misc.log2,
180 sctp_clog.x.misc.log3,
181 sctp_clog.x.misc.log4);
185 sctp_log_map(uint32_t map, uint32_t cum, uint32_t high, int from)
187 struct sctp_cwnd_log sctp_clog;
189 memset(&sctp_clog, 0, sizeof(sctp_clog));
190 sctp_clog.x.map.base = map;
191 sctp_clog.x.map.cum = cum;
192 sctp_clog.x.map.high = high;
193 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
196 sctp_clog.x.misc.log1,
197 sctp_clog.x.misc.log2,
198 sctp_clog.x.misc.log3,
199 sctp_clog.x.misc.log4);
203 sctp_log_fr(uint32_t biggest_tsn, uint32_t biggest_new_tsn, uint32_t tsn,
206 struct sctp_cwnd_log sctp_clog;
208 memset(&sctp_clog, 0, sizeof(sctp_clog));
209 sctp_clog.x.fr.largest_tsn = biggest_tsn;
210 sctp_clog.x.fr.largest_new_tsn = biggest_new_tsn;
211 sctp_clog.x.fr.tsn = tsn;
212 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
215 sctp_clog.x.misc.log1,
216 sctp_clog.x.misc.log2,
217 sctp_clog.x.misc.log3,
218 sctp_clog.x.misc.log4);
222 sctp_log_mb(struct mbuf *m, int from)
224 struct sctp_cwnd_log sctp_clog;
226 sctp_clog.x.mb.mp = m;
227 sctp_clog.x.mb.mbuf_flags = (uint8_t) (SCTP_BUF_GET_FLAGS(m));
228 sctp_clog.x.mb.size = (uint16_t) (SCTP_BUF_LEN(m));
229 sctp_clog.x.mb.data = SCTP_BUF_AT(m, 0);
230 if (SCTP_BUF_IS_EXTENDED(m)) {
231 sctp_clog.x.mb.ext = SCTP_BUF_EXTEND_BASE(m);
232 sctp_clog.x.mb.refcnt = (uint8_t) (SCTP_BUF_EXTEND_REFCNT(m));
234 sctp_clog.x.mb.ext = 0;
235 sctp_clog.x.mb.refcnt = 0;
237 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
240 sctp_clog.x.misc.log1,
241 sctp_clog.x.misc.log2,
242 sctp_clog.x.misc.log3,
243 sctp_clog.x.misc.log4);
247 sctp_log_strm_del(struct sctp_queued_to_read *control, struct sctp_queued_to_read *poschk,
250 struct sctp_cwnd_log sctp_clog;
252 if (control == NULL) {
253 SCTP_PRINTF("Gak log of NULL?\n");
256 sctp_clog.x.strlog.stcb = control->stcb;
257 sctp_clog.x.strlog.n_tsn = control->sinfo_tsn;
258 sctp_clog.x.strlog.n_sseq = control->sinfo_ssn;
259 sctp_clog.x.strlog.strm = control->sinfo_stream;
260 if (poschk != NULL) {
261 sctp_clog.x.strlog.e_tsn = poschk->sinfo_tsn;
262 sctp_clog.x.strlog.e_sseq = poschk->sinfo_ssn;
264 sctp_clog.x.strlog.e_tsn = 0;
265 sctp_clog.x.strlog.e_sseq = 0;
267 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
270 sctp_clog.x.misc.log1,
271 sctp_clog.x.misc.log2,
272 sctp_clog.x.misc.log3,
273 sctp_clog.x.misc.log4);
277 sctp_log_cwnd(struct sctp_tcb *stcb, struct sctp_nets *net, int augment, uint8_t from)
279 struct sctp_cwnd_log sctp_clog;
281 sctp_clog.x.cwnd.net = net;
282 if (stcb->asoc.send_queue_cnt > 255)
283 sctp_clog.x.cwnd.cnt_in_send = 255;
285 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
286 if (stcb->asoc.stream_queue_cnt > 255)
287 sctp_clog.x.cwnd.cnt_in_str = 255;
289 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
292 sctp_clog.x.cwnd.cwnd_new_value = net->cwnd;
293 sctp_clog.x.cwnd.inflight = net->flight_size;
294 sctp_clog.x.cwnd.pseudo_cumack = net->pseudo_cumack;
295 sctp_clog.x.cwnd.meets_pseudo_cumack = net->new_pseudo_cumack;
296 sctp_clog.x.cwnd.need_new_pseudo_cumack = net->find_pseudo_cumack;
298 if (SCTP_CWNDLOG_PRESEND == from) {
299 sctp_clog.x.cwnd.meets_pseudo_cumack = stcb->asoc.peers_rwnd;
301 sctp_clog.x.cwnd.cwnd_augment = augment;
302 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
305 sctp_clog.x.misc.log1,
306 sctp_clog.x.misc.log2,
307 sctp_clog.x.misc.log3,
308 sctp_clog.x.misc.log4);
312 sctp_log_lock(struct sctp_inpcb *inp, struct sctp_tcb *stcb, uint8_t from)
314 struct sctp_cwnd_log sctp_clog;
316 memset(&sctp_clog, 0, sizeof(sctp_clog));
318 sctp_clog.x.lock.sock = (void *)inp->sctp_socket;
321 sctp_clog.x.lock.sock = (void *)NULL;
323 sctp_clog.x.lock.inp = (void *)inp;
325 sctp_clog.x.lock.tcb_lock = mtx_owned(&stcb->tcb_mtx);
327 sctp_clog.x.lock.tcb_lock = SCTP_LOCK_UNKNOWN;
330 sctp_clog.x.lock.inp_lock = mtx_owned(&inp->inp_mtx);
331 sctp_clog.x.lock.create_lock = mtx_owned(&inp->inp_create_mtx);
333 sctp_clog.x.lock.inp_lock = SCTP_LOCK_UNKNOWN;
334 sctp_clog.x.lock.create_lock = SCTP_LOCK_UNKNOWN;
336 sctp_clog.x.lock.info_lock = rw_wowned(&SCTP_BASE_INFO(ipi_ep_mtx));
337 if (inp && (inp->sctp_socket)) {
338 sctp_clog.x.lock.sock_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
339 sctp_clog.x.lock.sockrcvbuf_lock = mtx_owned(&(inp->sctp_socket->so_rcv.sb_mtx));
340 sctp_clog.x.lock.socksndbuf_lock = mtx_owned(&(inp->sctp_socket->so_snd.sb_mtx));
342 sctp_clog.x.lock.sock_lock = SCTP_LOCK_UNKNOWN;
343 sctp_clog.x.lock.sockrcvbuf_lock = SCTP_LOCK_UNKNOWN;
344 sctp_clog.x.lock.socksndbuf_lock = SCTP_LOCK_UNKNOWN;
346 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
349 sctp_clog.x.misc.log1,
350 sctp_clog.x.misc.log2,
351 sctp_clog.x.misc.log3,
352 sctp_clog.x.misc.log4);
356 sctp_log_maxburst(struct sctp_tcb *stcb, struct sctp_nets *net, int error, int burst, uint8_t from)
358 struct sctp_cwnd_log sctp_clog;
360 memset(&sctp_clog, 0, sizeof(sctp_clog));
361 sctp_clog.x.cwnd.net = net;
362 sctp_clog.x.cwnd.cwnd_new_value = error;
363 sctp_clog.x.cwnd.inflight = net->flight_size;
364 sctp_clog.x.cwnd.cwnd_augment = burst;
365 if (stcb->asoc.send_queue_cnt > 255)
366 sctp_clog.x.cwnd.cnt_in_send = 255;
368 sctp_clog.x.cwnd.cnt_in_send = stcb->asoc.send_queue_cnt;
369 if (stcb->asoc.stream_queue_cnt > 255)
370 sctp_clog.x.cwnd.cnt_in_str = 255;
372 sctp_clog.x.cwnd.cnt_in_str = stcb->asoc.stream_queue_cnt;
373 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
374 SCTP_LOG_EVENT_MAXBURST,
376 sctp_clog.x.misc.log1,
377 sctp_clog.x.misc.log2,
378 sctp_clog.x.misc.log3,
379 sctp_clog.x.misc.log4);
383 sctp_log_rwnd(uint8_t from, uint32_t peers_rwnd, uint32_t snd_size, uint32_t overhead)
385 struct sctp_cwnd_log sctp_clog;
387 sctp_clog.x.rwnd.rwnd = peers_rwnd;
388 sctp_clog.x.rwnd.send_size = snd_size;
389 sctp_clog.x.rwnd.overhead = overhead;
390 sctp_clog.x.rwnd.new_rwnd = 0;
391 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
394 sctp_clog.x.misc.log1,
395 sctp_clog.x.misc.log2,
396 sctp_clog.x.misc.log3,
397 sctp_clog.x.misc.log4);
401 sctp_log_rwnd_set(uint8_t from, uint32_t peers_rwnd, uint32_t flight_size, uint32_t overhead, uint32_t a_rwndval)
403 struct sctp_cwnd_log sctp_clog;
405 sctp_clog.x.rwnd.rwnd = peers_rwnd;
406 sctp_clog.x.rwnd.send_size = flight_size;
407 sctp_clog.x.rwnd.overhead = overhead;
408 sctp_clog.x.rwnd.new_rwnd = a_rwndval;
409 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
412 sctp_clog.x.misc.log1,
413 sctp_clog.x.misc.log2,
414 sctp_clog.x.misc.log3,
415 sctp_clog.x.misc.log4);
419 sctp_log_mbcnt(uint8_t from, uint32_t total_oq, uint32_t book, uint32_t total_mbcnt_q, uint32_t mbcnt)
421 struct sctp_cwnd_log sctp_clog;
423 sctp_clog.x.mbcnt.total_queue_size = total_oq;
424 sctp_clog.x.mbcnt.size_change = book;
425 sctp_clog.x.mbcnt.total_queue_mb_size = total_mbcnt_q;
426 sctp_clog.x.mbcnt.mbcnt_change = mbcnt;
427 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
428 SCTP_LOG_EVENT_MBCNT,
430 sctp_clog.x.misc.log1,
431 sctp_clog.x.misc.log2,
432 sctp_clog.x.misc.log3,
433 sctp_clog.x.misc.log4);
437 sctp_misc_ints(uint8_t from, uint32_t a, uint32_t b, uint32_t c, uint32_t d)
439 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
446 sctp_wakeup_log(struct sctp_tcb *stcb, uint32_t wake_cnt, int from)
448 struct sctp_cwnd_log sctp_clog;
450 sctp_clog.x.wake.stcb = (void *)stcb;
451 sctp_clog.x.wake.wake_cnt = wake_cnt;
452 sctp_clog.x.wake.flight = stcb->asoc.total_flight_count;
453 sctp_clog.x.wake.send_q = stcb->asoc.send_queue_cnt;
454 sctp_clog.x.wake.sent_q = stcb->asoc.sent_queue_cnt;
456 if (stcb->asoc.stream_queue_cnt < 0xff)
457 sctp_clog.x.wake.stream_qcnt = (uint8_t) stcb->asoc.stream_queue_cnt;
459 sctp_clog.x.wake.stream_qcnt = 0xff;
461 if (stcb->asoc.chunks_on_out_queue < 0xff)
462 sctp_clog.x.wake.chunks_on_oque = (uint8_t) stcb->asoc.chunks_on_out_queue;
464 sctp_clog.x.wake.chunks_on_oque = 0xff;
466 sctp_clog.x.wake.sctpflags = 0;
467 /* set in the defered mode stuff */
468 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_DONT_WAKE)
469 sctp_clog.x.wake.sctpflags |= 1;
470 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEOUTPUT)
471 sctp_clog.x.wake.sctpflags |= 2;
472 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_WAKEINPUT)
473 sctp_clog.x.wake.sctpflags |= 4;
474 /* what about the sb */
475 if (stcb->sctp_socket) {
476 struct socket *so = stcb->sctp_socket;
478 sctp_clog.x.wake.sbflags = (uint8_t) ((so->so_snd.sb_flags & 0x00ff));
480 sctp_clog.x.wake.sbflags = 0xff;
482 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
485 sctp_clog.x.misc.log1,
486 sctp_clog.x.misc.log2,
487 sctp_clog.x.misc.log3,
488 sctp_clog.x.misc.log4);
492 sctp_log_block(uint8_t from, struct sctp_association *asoc, int sendlen)
494 struct sctp_cwnd_log sctp_clog;
496 sctp_clog.x.blk.onsb = asoc->total_output_queue_size;
497 sctp_clog.x.blk.send_sent_qcnt = (uint16_t) (asoc->send_queue_cnt + asoc->sent_queue_cnt);
498 sctp_clog.x.blk.peer_rwnd = asoc->peers_rwnd;
499 sctp_clog.x.blk.stream_qcnt = (uint16_t) asoc->stream_queue_cnt;
500 sctp_clog.x.blk.chunks_on_oque = (uint16_t) asoc->chunks_on_out_queue;
501 sctp_clog.x.blk.flight_size = (uint16_t) (asoc->total_flight / 1024);
502 sctp_clog.x.blk.sndlen = sendlen;
503 SCTP_CTR6(KTR_SCTP, "SCTP:%d[%d]:%x-%x-%x-%x",
504 SCTP_LOG_EVENT_BLOCK,
506 sctp_clog.x.misc.log1,
507 sctp_clog.x.misc.log2,
508 sctp_clog.x.misc.log3,
509 sctp_clog.x.misc.log4);
513 sctp_fill_stat_log(void *optval SCTP_UNUSED, size_t *optsize SCTP_UNUSED)
515 /* May need to fix this if ktrdump does not work */
519 #ifdef SCTP_AUDITING_ENABLED
520 uint8_t sctp_audit_data[SCTP_AUDIT_SIZE][2];
521 static int sctp_audit_indx = 0;
525 sctp_print_audit_report(void)
531 for (i = sctp_audit_indx; i < SCTP_AUDIT_SIZE; i++) {
532 if ((sctp_audit_data[i][0] == 0xe0) &&
533 (sctp_audit_data[i][1] == 0x01)) {
536 } else if (sctp_audit_data[i][0] == 0xf0) {
539 } else if ((sctp_audit_data[i][0] == 0xc0) &&
540 (sctp_audit_data[i][1] == 0x01)) {
544 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
545 (uint32_t) sctp_audit_data[i][1]);
550 for (i = 0; i < sctp_audit_indx; i++) {
551 if ((sctp_audit_data[i][0] == 0xe0) &&
552 (sctp_audit_data[i][1] == 0x01)) {
555 } else if (sctp_audit_data[i][0] == 0xf0) {
558 } else if ((sctp_audit_data[i][0] == 0xc0) &&
559 (sctp_audit_data[i][1] == 0x01)) {
563 SCTP_PRINTF("%2.2x%2.2x ", (uint32_t) sctp_audit_data[i][0],
564 (uint32_t) sctp_audit_data[i][1]);
573 sctp_auditing(int from, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
574 struct sctp_nets *net)
576 int resend_cnt, tot_out, rep, tot_book_cnt;
577 struct sctp_nets *lnet;
578 struct sctp_tmit_chunk *chk;
580 sctp_audit_data[sctp_audit_indx][0] = 0xAA;
581 sctp_audit_data[sctp_audit_indx][1] = 0x000000ff & from;
583 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
587 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
588 sctp_audit_data[sctp_audit_indx][1] = 0x01;
590 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
596 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
597 sctp_audit_data[sctp_audit_indx][1] = 0x02;
599 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
604 sctp_audit_data[sctp_audit_indx][0] = 0xA1;
605 sctp_audit_data[sctp_audit_indx][1] =
606 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
608 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
613 resend_cnt = tot_out = 0;
614 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
615 if (chk->sent == SCTP_DATAGRAM_RESEND) {
617 } else if (chk->sent < SCTP_DATAGRAM_RESEND) {
618 tot_out += chk->book_size;
622 if (resend_cnt != stcb->asoc.sent_queue_retran_cnt) {
623 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
624 sctp_audit_data[sctp_audit_indx][1] = 0xA1;
626 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
629 SCTP_PRINTF("resend_cnt:%d asoc-tot:%d\n",
630 resend_cnt, stcb->asoc.sent_queue_retran_cnt);
632 stcb->asoc.sent_queue_retran_cnt = resend_cnt;
633 sctp_audit_data[sctp_audit_indx][0] = 0xA2;
634 sctp_audit_data[sctp_audit_indx][1] =
635 (0x000000ff & stcb->asoc.sent_queue_retran_cnt);
637 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
641 if (tot_out != stcb->asoc.total_flight) {
642 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
643 sctp_audit_data[sctp_audit_indx][1] = 0xA2;
645 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
649 SCTP_PRINTF("tot_flt:%d asoc_tot:%d\n", tot_out,
650 (int)stcb->asoc.total_flight);
651 stcb->asoc.total_flight = tot_out;
653 if (tot_book_cnt != stcb->asoc.total_flight_count) {
654 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
655 sctp_audit_data[sctp_audit_indx][1] = 0xA5;
657 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
661 SCTP_PRINTF("tot_flt_book:%d\n", tot_book_cnt);
663 stcb->asoc.total_flight_count = tot_book_cnt;
666 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
667 tot_out += lnet->flight_size;
669 if (tot_out != stcb->asoc.total_flight) {
670 sctp_audit_data[sctp_audit_indx][0] = 0xAF;
671 sctp_audit_data[sctp_audit_indx][1] = 0xA3;
673 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
677 SCTP_PRINTF("real flight:%d net total was %d\n",
678 stcb->asoc.total_flight, tot_out);
679 /* now corrective action */
680 TAILQ_FOREACH(lnet, &stcb->asoc.nets, sctp_next) {
683 TAILQ_FOREACH(chk, &stcb->asoc.sent_queue, sctp_next) {
684 if ((chk->whoTo == lnet) &&
685 (chk->sent < SCTP_DATAGRAM_RESEND)) {
686 tot_out += chk->book_size;
689 if (lnet->flight_size != tot_out) {
690 SCTP_PRINTF("net:%p flight was %d corrected to %d\n",
691 lnet, lnet->flight_size,
693 lnet->flight_size = tot_out;
698 sctp_print_audit_report();
703 sctp_audit_log(uint8_t ev, uint8_t fd)
706 sctp_audit_data[sctp_audit_indx][0] = ev;
707 sctp_audit_data[sctp_audit_indx][1] = fd;
709 if (sctp_audit_indx >= SCTP_AUDIT_SIZE) {
717 * sctp_stop_timers_for_shutdown() should be called
718 * when entering the SHUTDOWN_SENT or SHUTDOWN_ACK_SENT
719 * state to make sure that all timers are stopped.
722 sctp_stop_timers_for_shutdown(struct sctp_tcb *stcb)
724 struct sctp_association *asoc;
725 struct sctp_nets *net;
729 (void)SCTP_OS_TIMER_STOP(&asoc->dack_timer.timer);
730 (void)SCTP_OS_TIMER_STOP(&asoc->strreset_timer.timer);
731 (void)SCTP_OS_TIMER_STOP(&asoc->asconf_timer.timer);
732 (void)SCTP_OS_TIMER_STOP(&asoc->autoclose_timer.timer);
733 (void)SCTP_OS_TIMER_STOP(&asoc->delayed_event_timer.timer);
734 TAILQ_FOREACH(net, &asoc->nets, sctp_next) {
735 (void)SCTP_OS_TIMER_STOP(&net->pmtu_timer.timer);
736 (void)SCTP_OS_TIMER_STOP(&net->hb_timer.timer);
741 * a list of sizes based on typical mtu's, used only if next hop size not
744 static uint32_t sctp_mtu_sizes[] = {
766 * Return the largest MTU smaller than val. If there is no
767 * entry, just return val.
770 sctp_get_prev_mtu(uint32_t val)
774 if (val <= sctp_mtu_sizes[0]) {
777 for (i = 1; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
778 if (val <= sctp_mtu_sizes[i]) {
782 return (sctp_mtu_sizes[i - 1]);
786 * Return the smallest MTU larger than val. If there is no
787 * entry, just return val.
790 sctp_get_next_mtu(uint32_t val)
792 /* select another MTU that is just bigger than this one */
795 for (i = 0; i < (sizeof(sctp_mtu_sizes) / sizeof(uint32_t)); i++) {
796 if (val < sctp_mtu_sizes[i]) {
797 return (sctp_mtu_sizes[i]);
804 sctp_fill_random_store(struct sctp_pcb *m)
807 * Here we use the MD5/SHA-1 to hash with our good randomNumbers and
808 * our counter. The result becomes our good random numbers and we
809 * then setup to give these out. Note that we do no locking to
810 * protect this. This is ok, since if competing folks call this we
811 * will get more gobbled gook in the random store which is what we
812 * want. There is a danger that two guys will use the same random
813 * numbers, but thats ok too since that is random as well :->
816 (void)sctp_hmac(SCTP_HMAC, (uint8_t *) m->random_numbers,
817 sizeof(m->random_numbers), (uint8_t *) & m->random_counter,
818 sizeof(m->random_counter), (uint8_t *) m->random_store);
823 sctp_select_initial_TSN(struct sctp_pcb *inp)
826 * A true implementation should use random selection process to get
827 * the initial stream sequence number, using RFC1750 as a good
832 int store_at, new_store;
834 if (inp->initial_sequence_debug != 0) {
837 ret = inp->initial_sequence_debug;
838 inp->initial_sequence_debug++;
842 store_at = inp->store_at;
843 new_store = store_at + sizeof(uint32_t);
844 if (new_store >= (SCTP_SIGNATURE_SIZE - 3)) {
847 if (!atomic_cmpset_int(&inp->store_at, store_at, new_store)) {
850 if (new_store == 0) {
851 /* Refill the random store */
852 sctp_fill_random_store(inp);
854 p = &inp->random_store[store_at];
861 sctp_select_a_tag(struct sctp_inpcb *inp, uint16_t lport, uint16_t rport, int check)
867 (void)SCTP_GETTIME_TIMEVAL(&now);
870 x = sctp_select_initial_TSN(&inp->sctp_ep);
875 if (!check || sctp_is_vtag_good(x, lport, rport, &now)) {
883 sctp_init_asoc(struct sctp_inpcb *m, struct sctp_tcb *stcb,
884 uint32_t override_tag, uint32_t vrf_id)
886 struct sctp_association *asoc;
889 * Anything set to zero is taken care of by the allocation routine's
894 * Up front select what scoping to apply on addresses I tell my peer
895 * Not sure what to do with these right now, we will need to come up
896 * with a way to set them. We may need to pass them through from the
897 * caller in the sctp_aloc_assoc() function.
902 /* init all variables to a known value. */
903 SCTP_SET_STATE(&stcb->asoc, SCTP_STATE_INUSE);
904 asoc->max_burst = m->sctp_ep.max_burst;
905 asoc->fr_max_burst = m->sctp_ep.fr_max_burst;
906 asoc->heart_beat_delay = TICKS_TO_MSEC(m->sctp_ep.sctp_timeoutticks[SCTP_TIMER_HEARTBEAT]);
907 asoc->cookie_life = m->sctp_ep.def_cookie_life;
908 asoc->sctp_cmt_on_off = m->sctp_cmt_on_off;
909 asoc->ecn_allowed = m->sctp_ecn_enable;
910 asoc->sctp_nr_sack_on_off = (uint8_t) SCTP_BASE_SYSCTL(sctp_nr_sack_on_off);
911 asoc->sctp_cmt_pf = (uint8_t) 0;
912 asoc->sctp_frag_point = m->sctp_frag_point;
913 asoc->sctp_features = m->sctp_features;
914 asoc->default_dscp = m->sctp_ep.default_dscp;
916 if (m->sctp_ep.default_flowlabel) {
917 asoc->default_flowlabel = m->sctp_ep.default_flowlabel;
919 if (m->ip_inp.inp.inp_flags & IN6P_AUTOFLOWLABEL) {
920 asoc->default_flowlabel = sctp_select_initial_TSN(&m->sctp_ep);
921 asoc->default_flowlabel &= 0x000fffff;
922 asoc->default_flowlabel |= 0x80000000;
924 asoc->default_flowlabel = 0;
928 asoc->sb_send_resv = 0;
930 asoc->my_vtag = override_tag;
932 asoc->my_vtag = sctp_select_a_tag(m, stcb->sctp_ep->sctp_lport, stcb->rport, 1);
934 /* Get the nonce tags */
935 asoc->my_vtag_nonce = sctp_select_a_tag(m, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
936 asoc->peer_vtag_nonce = sctp_select_a_tag(m, stcb->sctp_ep->sctp_lport, stcb->rport, 0);
937 asoc->vrf_id = vrf_id;
939 #ifdef SCTP_ASOCLOG_OF_TSNS
941 asoc->tsn_out_at = 0;
942 asoc->tsn_in_wrapped = 0;
943 asoc->tsn_out_wrapped = 0;
944 asoc->cumack_log_at = 0;
945 asoc->cumack_log_atsnt = 0;
947 #ifdef SCTP_FS_SPEC_LOG
951 asoc->assoc_up_sent = 0;
952 asoc->asconf_seq_out = asoc->str_reset_seq_out = asoc->init_seq_number = asoc->sending_seq =
953 sctp_select_initial_TSN(&m->sctp_ep);
954 asoc->asconf_seq_out_acked = asoc->asconf_seq_out - 1;
955 /* we are optimisitic here */
956 asoc->peer_supports_pktdrop = 1;
957 asoc->peer_supports_nat = 0;
958 asoc->sent_queue_retran_cnt = 0;
961 asoc->last_net_cmt_send_started = NULL;
963 /* This will need to be adjusted */
964 asoc->last_acked_seq = asoc->init_seq_number - 1;
965 asoc->advanced_peer_ack_point = asoc->last_acked_seq;
966 asoc->asconf_seq_in = asoc->last_acked_seq;
968 /* here we are different, we hold the next one we expect */
969 asoc->str_reset_seq_in = asoc->last_acked_seq + 1;
971 asoc->initial_init_rto_max = m->sctp_ep.initial_init_rto_max;
972 asoc->initial_rto = m->sctp_ep.initial_rto;
974 asoc->max_init_times = m->sctp_ep.max_init_times;
975 asoc->max_send_times = m->sctp_ep.max_send_times;
976 asoc->def_net_failure = m->sctp_ep.def_net_failure;
977 asoc->def_net_pf_threshold = m->sctp_ep.def_net_pf_threshold;
978 asoc->free_chunk_cnt = 0;
980 asoc->iam_blocking = 0;
982 asoc->context = m->sctp_context;
983 asoc->def_send = m->def_send;
984 asoc->delayed_ack = TICKS_TO_MSEC(m->sctp_ep.sctp_timeoutticks[SCTP_TIMER_RECV]);
985 asoc->sack_freq = m->sctp_ep.sctp_sack_freq;
986 asoc->pr_sctp_cnt = 0;
987 asoc->total_output_queue_size = 0;
989 if (m->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
992 /* Its a V6 socket */
993 inp6 = (struct in6pcb *)m;
994 asoc->ipv6_addr_legal = 1;
995 /* Now look at the binding flag to see if V4 will be legal */
996 if (SCTP_IPV6_V6ONLY(inp6) == 0) {
997 asoc->ipv4_addr_legal = 1;
999 /* V4 addresses are NOT legal on the association */
1000 asoc->ipv4_addr_legal = 0;
1003 /* Its a V4 socket, no - V6 */
1004 asoc->ipv4_addr_legal = 1;
1005 asoc->ipv6_addr_legal = 0;
1008 asoc->my_rwnd = max(SCTP_SB_LIMIT_RCV(m->sctp_socket), SCTP_MINIMAL_RWND);
1009 asoc->peers_rwnd = SCTP_SB_LIMIT_RCV(m->sctp_socket);
1011 asoc->smallest_mtu = m->sctp_frag_point;
1012 asoc->minrto = m->sctp_ep.sctp_minrto;
1013 asoc->maxrto = m->sctp_ep.sctp_maxrto;
1015 asoc->locked_on_sending = NULL;
1016 asoc->stream_locked_on = 0;
1017 asoc->ecn_echo_cnt_onq = 0;
1018 asoc->stream_locked = 0;
1020 asoc->send_sack = 1;
1022 LIST_INIT(&asoc->sctp_restricted_addrs);
1024 TAILQ_INIT(&asoc->nets);
1025 TAILQ_INIT(&asoc->pending_reply_queue);
1026 TAILQ_INIT(&asoc->asconf_ack_sent);
1027 /* Setup to fill the hb random cache at first HB */
1028 asoc->hb_random_idx = 4;
1030 asoc->sctp_autoclose_ticks = m->sctp_ep.auto_close_time;
1032 stcb->asoc.congestion_control_module = m->sctp_ep.sctp_default_cc_module;
1033 stcb->asoc.cc_functions = sctp_cc_functions[m->sctp_ep.sctp_default_cc_module];
1035 stcb->asoc.stream_scheduling_module = m->sctp_ep.sctp_default_ss_module;
1036 stcb->asoc.ss_functions = sctp_ss_functions[m->sctp_ep.sctp_default_ss_module];
1039 * Now the stream parameters, here we allocate space for all streams
1040 * that we request by default.
1042 asoc->strm_realoutsize = asoc->streamoutcnt = asoc->pre_open_streams =
1043 m->sctp_ep.pre_open_stream_count;
1044 SCTP_MALLOC(asoc->strmout, struct sctp_stream_out *,
1045 asoc->streamoutcnt * sizeof(struct sctp_stream_out),
1047 if (asoc->strmout == NULL) {
1048 /* big trouble no memory */
1049 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1052 for (i = 0; i < asoc->streamoutcnt; i++) {
1054 * inbound side must be set to 0xffff, also NOTE when we get
1055 * the INIT-ACK back (for INIT sender) we MUST reduce the
1056 * count (streamoutcnt) but first check if we sent to any of
1057 * the upper streams that were dropped (if some were). Those
1058 * that were dropped must be notified to the upper layer as
1061 asoc->strmout[i].next_sequence_sent = 0x0;
1062 TAILQ_INIT(&asoc->strmout[i].outqueue);
1063 asoc->strmout[i].stream_no = i;
1064 asoc->strmout[i].last_msg_incomplete = 0;
1065 asoc->ss_functions.sctp_ss_init_stream(&asoc->strmout[i], NULL);
1067 asoc->ss_functions.sctp_ss_init(stcb, asoc, 0);
1069 /* Now the mapping array */
1070 asoc->mapping_array_size = SCTP_INITIAL_MAPPING_ARRAY;
1071 SCTP_MALLOC(asoc->mapping_array, uint8_t *, asoc->mapping_array_size,
1073 if (asoc->mapping_array == NULL) {
1074 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1075 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1078 memset(asoc->mapping_array, 0, asoc->mapping_array_size);
1079 SCTP_MALLOC(asoc->nr_mapping_array, uint8_t *, asoc->mapping_array_size,
1081 if (asoc->nr_mapping_array == NULL) {
1082 SCTP_FREE(asoc->strmout, SCTP_M_STRMO);
1083 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1084 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
1087 memset(asoc->nr_mapping_array, 0, asoc->mapping_array_size);
1089 /* Now the init of the other outqueues */
1090 TAILQ_INIT(&asoc->free_chunks);
1091 TAILQ_INIT(&asoc->control_send_queue);
1092 TAILQ_INIT(&asoc->asconf_send_queue);
1093 TAILQ_INIT(&asoc->send_queue);
1094 TAILQ_INIT(&asoc->sent_queue);
1095 TAILQ_INIT(&asoc->reasmqueue);
1096 TAILQ_INIT(&asoc->resetHead);
1097 asoc->max_inbound_streams = m->sctp_ep.max_open_streams_intome;
1098 TAILQ_INIT(&asoc->asconf_queue);
1099 /* authentication fields */
1100 asoc->authinfo.random = NULL;
1101 asoc->authinfo.active_keyid = 0;
1102 asoc->authinfo.assoc_key = NULL;
1103 asoc->authinfo.assoc_keyid = 0;
1104 asoc->authinfo.recv_key = NULL;
1105 asoc->authinfo.recv_keyid = 0;
1106 LIST_INIT(&asoc->shared_keys);
1107 asoc->marked_retrans = 0;
1108 asoc->port = m->sctp_ep.port;
1112 asoc->timoshutdown = 0;
1113 asoc->timoheartbeat = 0;
1114 asoc->timocookie = 0;
1115 asoc->timoshutdownack = 0;
1116 (void)SCTP_GETTIME_TIMEVAL(&asoc->start_time);
1117 asoc->discontinuity_time = asoc->start_time;
1119 * sa_ignore MEMLEAK {memory is put in the assoc mapping array and
1120 * freed later when the association is freed.
1126 sctp_print_mapping_array(struct sctp_association *asoc)
1128 unsigned int i, limit;
1130 printf("Mapping array size: %d, baseTSN: %8.8x, cumAck: %8.8x, highestTSN: (%8.8x, %8.8x).\n",
1131 asoc->mapping_array_size,
1132 asoc->mapping_array_base_tsn,
1133 asoc->cumulative_tsn,
1134 asoc->highest_tsn_inside_map,
1135 asoc->highest_tsn_inside_nr_map);
1136 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1137 if (asoc->mapping_array[limit - 1] != 0) {
1141 printf("Renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1142 for (i = 0; i < limit; i++) {
1143 printf("%2.2x%c", asoc->mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1147 for (limit = asoc->mapping_array_size; limit > 1; limit--) {
1148 if (asoc->nr_mapping_array[limit - 1]) {
1152 printf("Non renegable mapping array (last %d entries are zero):\n", asoc->mapping_array_size - limit);
1153 for (i = 0; i < limit; i++) {
1154 printf("%2.2x%c", asoc->nr_mapping_array[i], ((i + 1) % 16) ? ' ' : '\n');
1161 sctp_expand_mapping_array(struct sctp_association *asoc, uint32_t needed)
1163 /* mapping array needs to grow */
1164 uint8_t *new_array1, *new_array2;
1167 new_size = asoc->mapping_array_size + ((needed + 7) / 8 + SCTP_MAPPING_ARRAY_INCR);
1168 SCTP_MALLOC(new_array1, uint8_t *, new_size, SCTP_M_MAP);
1169 SCTP_MALLOC(new_array2, uint8_t *, new_size, SCTP_M_MAP);
1170 if ((new_array1 == NULL) || (new_array2 == NULL)) {
1171 /* can't get more, forget it */
1172 SCTP_PRINTF("No memory for expansion of SCTP mapping array %d\n", new_size);
1174 SCTP_FREE(new_array1, SCTP_M_MAP);
1177 SCTP_FREE(new_array2, SCTP_M_MAP);
1181 memset(new_array1, 0, new_size);
1182 memset(new_array2, 0, new_size);
1183 memcpy(new_array1, asoc->mapping_array, asoc->mapping_array_size);
1184 memcpy(new_array2, asoc->nr_mapping_array, asoc->mapping_array_size);
1185 SCTP_FREE(asoc->mapping_array, SCTP_M_MAP);
1186 SCTP_FREE(asoc->nr_mapping_array, SCTP_M_MAP);
1187 asoc->mapping_array = new_array1;
1188 asoc->nr_mapping_array = new_array2;
1189 asoc->mapping_array_size = new_size;
1195 sctp_iterator_work(struct sctp_iterator *it)
1197 int iteration_count = 0;
1200 struct sctp_inpcb *tinp;
1202 SCTP_INP_INFO_RLOCK();
1203 SCTP_ITERATOR_LOCK();
1205 SCTP_INP_RLOCK(it->inp);
1206 SCTP_INP_DECR_REF(it->inp);
1208 if (it->inp == NULL) {
1209 /* iterator is complete */
1211 SCTP_ITERATOR_UNLOCK();
1212 SCTP_INP_INFO_RUNLOCK();
1213 if (it->function_atend != NULL) {
1214 (*it->function_atend) (it->pointer, it->val);
1216 SCTP_FREE(it, SCTP_M_ITER);
1223 SCTP_INP_RLOCK(it->inp);
1225 while (((it->pcb_flags) &&
1226 ((it->inp->sctp_flags & it->pcb_flags) != it->pcb_flags)) ||
1227 ((it->pcb_features) &&
1228 ((it->inp->sctp_features & it->pcb_features) != it->pcb_features))) {
1229 /* endpoint flags or features don't match, so keep looking */
1230 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1231 SCTP_INP_RUNLOCK(it->inp);
1232 goto done_with_iterator;
1235 it->inp = LIST_NEXT(it->inp, sctp_list);
1236 SCTP_INP_RUNLOCK(tinp);
1237 if (it->inp == NULL) {
1238 goto done_with_iterator;
1240 SCTP_INP_RLOCK(it->inp);
1242 /* now go through each assoc which is in the desired state */
1243 if (it->done_current_ep == 0) {
1244 if (it->function_inp != NULL)
1245 inp_skip = (*it->function_inp) (it->inp, it->pointer, it->val);
1246 it->done_current_ep = 1;
1248 if (it->stcb == NULL) {
1249 /* run the per instance function */
1250 it->stcb = LIST_FIRST(&it->inp->sctp_asoc_list);
1252 if ((inp_skip) || it->stcb == NULL) {
1253 if (it->function_inp_end != NULL) {
1254 inp_skip = (*it->function_inp_end) (it->inp,
1258 SCTP_INP_RUNLOCK(it->inp);
1262 SCTP_TCB_LOCK(it->stcb);
1263 if (it->asoc_state && ((it->stcb->asoc.state & it->asoc_state) != it->asoc_state)) {
1264 /* not in the right state... keep looking */
1265 SCTP_TCB_UNLOCK(it->stcb);
1268 /* see if we have limited out the iterator loop */
1270 if (iteration_count > SCTP_ITERATOR_MAX_AT_ONCE) {
1271 /* Pause to let others grab the lock */
1272 atomic_add_int(&it->stcb->asoc.refcnt, 1);
1273 SCTP_TCB_UNLOCK(it->stcb);
1274 SCTP_INP_INCR_REF(it->inp);
1275 SCTP_INP_RUNLOCK(it->inp);
1276 SCTP_ITERATOR_UNLOCK();
1277 SCTP_INP_INFO_RUNLOCK();
1278 SCTP_INP_INFO_RLOCK();
1279 SCTP_ITERATOR_LOCK();
1280 if (sctp_it_ctl.iterator_flags) {
1281 /* We won't be staying here */
1282 SCTP_INP_DECR_REF(it->inp);
1283 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1284 if (sctp_it_ctl.iterator_flags &
1285 SCTP_ITERATOR_STOP_CUR_IT) {
1286 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_IT;
1287 goto done_with_iterator;
1289 if (sctp_it_ctl.iterator_flags &
1290 SCTP_ITERATOR_STOP_CUR_INP) {
1291 sctp_it_ctl.iterator_flags &= ~SCTP_ITERATOR_STOP_CUR_INP;
1294 /* If we reach here huh? */
1295 printf("Unknown it ctl flag %x\n",
1296 sctp_it_ctl.iterator_flags);
1297 sctp_it_ctl.iterator_flags = 0;
1299 SCTP_INP_RLOCK(it->inp);
1300 SCTP_INP_DECR_REF(it->inp);
1301 SCTP_TCB_LOCK(it->stcb);
1302 atomic_add_int(&it->stcb->asoc.refcnt, -1);
1303 iteration_count = 0;
1305 /* run function on this one */
1306 (*it->function_assoc) (it->inp, it->stcb, it->pointer, it->val);
1309 * we lie here, it really needs to have its own type but
1310 * first I must verify that this won't effect things :-0
1312 if (it->no_chunk_output == 0)
1313 sctp_chunk_output(it->inp, it->stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1315 SCTP_TCB_UNLOCK(it->stcb);
1317 it->stcb = LIST_NEXT(it->stcb, sctp_tcblist);
1318 if (it->stcb == NULL) {
1319 /* Run last function */
1320 if (it->function_inp_end != NULL) {
1321 inp_skip = (*it->function_inp_end) (it->inp,
1327 SCTP_INP_RUNLOCK(it->inp);
1329 /* done with all assocs on this endpoint, move on to next endpoint */
1330 it->done_current_ep = 0;
1331 if (it->iterator_flags & SCTP_ITERATOR_DO_SINGLE_INP) {
1334 it->inp = LIST_NEXT(it->inp, sctp_list);
1336 if (it->inp == NULL) {
1337 goto done_with_iterator;
1339 goto select_a_new_ep;
1343 sctp_iterator_worker(void)
1345 struct sctp_iterator *it, *nit;
1347 /* This function is called with the WQ lock in place */
1349 sctp_it_ctl.iterator_running = 1;
1350 TAILQ_FOREACH_SAFE(it, &sctp_it_ctl.iteratorhead, sctp_nxt_itr, nit) {
1351 sctp_it_ctl.cur_it = it;
1352 /* now lets work on this one */
1353 TAILQ_REMOVE(&sctp_it_ctl.iteratorhead, it, sctp_nxt_itr);
1354 SCTP_IPI_ITERATOR_WQ_UNLOCK();
1355 CURVNET_SET(it->vn);
1356 sctp_iterator_work(it);
1357 sctp_it_ctl.cur_it = NULL;
1359 SCTP_IPI_ITERATOR_WQ_LOCK();
1360 /* sa_ignore FREED_MEMORY */
1362 sctp_it_ctl.iterator_running = 0;
1368 sctp_handle_addr_wq(void)
1370 /* deal with the ADDR wq from the rtsock calls */
1371 struct sctp_laddr *wi, *nwi;
1372 struct sctp_asconf_iterator *asc;
1374 SCTP_MALLOC(asc, struct sctp_asconf_iterator *,
1375 sizeof(struct sctp_asconf_iterator), SCTP_M_ASC_IT);
1377 /* Try later, no memory */
1378 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
1379 (struct sctp_inpcb *)NULL,
1380 (struct sctp_tcb *)NULL,
1381 (struct sctp_nets *)NULL);
1384 LIST_INIT(&asc->list_of_work);
1387 SCTP_WQ_ADDR_LOCK();
1388 LIST_FOREACH_SAFE(wi, &SCTP_BASE_INFO(addr_wq), sctp_nxt_addr, nwi) {
1389 LIST_REMOVE(wi, sctp_nxt_addr);
1390 LIST_INSERT_HEAD(&asc->list_of_work, wi, sctp_nxt_addr);
1393 SCTP_WQ_ADDR_UNLOCK();
1395 if (asc->cnt == 0) {
1396 SCTP_FREE(asc, SCTP_M_ASC_IT);
1398 (void)sctp_initiate_iterator(sctp_asconf_iterator_ep,
1399 sctp_asconf_iterator_stcb,
1400 NULL, /* No ep end for boundall */
1401 SCTP_PCB_FLAGS_BOUNDALL,
1402 SCTP_PCB_ANY_FEATURES,
1403 SCTP_ASOC_ANY_STATE,
1405 sctp_asconf_iterator_end, NULL, 0);
1410 sctp_timeout_handler(void *t)
1412 struct sctp_inpcb *inp;
1413 struct sctp_tcb *stcb;
1414 struct sctp_nets *net;
1415 struct sctp_timer *tmr;
1417 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1421 int did_output, type;
1423 tmr = (struct sctp_timer *)t;
1424 inp = (struct sctp_inpcb *)tmr->ep;
1425 stcb = (struct sctp_tcb *)tmr->tcb;
1426 net = (struct sctp_nets *)tmr->net;
1427 CURVNET_SET((struct vnet *)tmr->vnet);
1430 #ifdef SCTP_AUDITING_ENABLED
1431 sctp_audit_log(0xF0, (uint8_t) tmr->type);
1432 sctp_auditing(3, inp, stcb, net);
1435 /* sanity checks... */
1436 if (tmr->self != (void *)tmr) {
1438 * SCTP_PRINTF("Stale SCTP timer fired (%p), ignoring...\n",
1444 tmr->stopped_from = 0xa001;
1445 if (!SCTP_IS_TIMER_TYPE_VALID(tmr->type)) {
1447 * SCTP_PRINTF("SCTP timer fired with invalid type: 0x%x\n",
1453 tmr->stopped_from = 0xa002;
1454 if ((tmr->type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL)) {
1458 /* if this is an iterator timeout, get the struct and clear inp */
1459 tmr->stopped_from = 0xa003;
1462 SCTP_INP_INCR_REF(inp);
1463 if ((inp->sctp_socket == NULL) &&
1464 ((tmr->type != SCTP_TIMER_TYPE_INPKILL) &&
1465 (tmr->type != SCTP_TIMER_TYPE_INIT) &&
1466 (tmr->type != SCTP_TIMER_TYPE_SEND) &&
1467 (tmr->type != SCTP_TIMER_TYPE_RECV) &&
1468 (tmr->type != SCTP_TIMER_TYPE_HEARTBEAT) &&
1469 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWN) &&
1470 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNACK) &&
1471 (tmr->type != SCTP_TIMER_TYPE_SHUTDOWNGUARD) &&
1472 (tmr->type != SCTP_TIMER_TYPE_ASOCKILL))
1474 SCTP_INP_DECR_REF(inp);
1479 tmr->stopped_from = 0xa004;
1481 atomic_add_int(&stcb->asoc.refcnt, 1);
1482 if (stcb->asoc.state == 0) {
1483 atomic_add_int(&stcb->asoc.refcnt, -1);
1485 SCTP_INP_DECR_REF(inp);
1491 tmr->stopped_from = 0xa005;
1492 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer type %d goes off\n", tmr->type);
1493 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1495 SCTP_INP_DECR_REF(inp);
1498 atomic_add_int(&stcb->asoc.refcnt, -1);
1503 tmr->stopped_from = 0xa006;
1506 SCTP_TCB_LOCK(stcb);
1507 atomic_add_int(&stcb->asoc.refcnt, -1);
1508 if ((tmr->type != SCTP_TIMER_TYPE_ASOCKILL) &&
1509 ((stcb->asoc.state == 0) ||
1510 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED))) {
1511 SCTP_TCB_UNLOCK(stcb);
1513 SCTP_INP_DECR_REF(inp);
1519 /* record in stopped what t-o occured */
1520 tmr->stopped_from = tmr->type;
1522 /* mark as being serviced now */
1523 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
1525 * Callout has been rescheduled.
1529 if (!SCTP_OS_TIMER_ACTIVE(&tmr->timer)) {
1531 * Not active, so no action.
1535 SCTP_OS_TIMER_DEACTIVATE(&tmr->timer);
1537 /* call the handler for the appropriate timer type */
1538 switch (tmr->type) {
1539 case SCTP_TIMER_TYPE_ZERO_COPY:
1543 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1544 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
1547 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1551 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
1552 SCTP_ZERO_COPY_SENDQ_EVENT(inp, inp->sctp_socket);
1555 case SCTP_TIMER_TYPE_ADDR_WQ:
1556 sctp_handle_addr_wq();
1558 case SCTP_TIMER_TYPE_SEND:
1559 if ((stcb == NULL) || (inp == NULL)) {
1562 SCTP_STAT_INCR(sctps_timodata);
1563 stcb->asoc.timodata++;
1564 stcb->asoc.num_send_timers_up--;
1565 if (stcb->asoc.num_send_timers_up < 0) {
1566 stcb->asoc.num_send_timers_up = 0;
1568 SCTP_TCB_LOCK_ASSERT(stcb);
1569 if (sctp_t3rxt_timer(inp, stcb, net)) {
1570 /* no need to unlock on tcb its gone */
1574 SCTP_TCB_LOCK_ASSERT(stcb);
1575 #ifdef SCTP_AUDITING_ENABLED
1576 sctp_auditing(4, inp, stcb, net);
1578 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1579 if ((stcb->asoc.num_send_timers_up == 0) &&
1580 (stcb->asoc.sent_queue_cnt > 0)) {
1581 struct sctp_tmit_chunk *chk;
1584 * safeguard. If there on some on the sent queue
1585 * somewhere but no timers running something is
1586 * wrong... so we start a timer on the first chunk
1587 * on the send queue on whatever net it is sent to.
1589 chk = TAILQ_FIRST(&stcb->asoc.sent_queue);
1590 sctp_timer_start(SCTP_TIMER_TYPE_SEND, inp, stcb,
1594 case SCTP_TIMER_TYPE_INIT:
1595 if ((stcb == NULL) || (inp == NULL)) {
1598 SCTP_STAT_INCR(sctps_timoinit);
1599 stcb->asoc.timoinit++;
1600 if (sctp_t1init_timer(inp, stcb, net)) {
1601 /* no need to unlock on tcb its gone */
1604 /* We do output but not here */
1607 case SCTP_TIMER_TYPE_RECV:
1608 if ((stcb == NULL) || (inp == NULL)) {
1611 SCTP_STAT_INCR(sctps_timosack);
1612 stcb->asoc.timosack++;
1613 sctp_send_sack(stcb, SCTP_SO_NOT_LOCKED);
1614 #ifdef SCTP_AUDITING_ENABLED
1615 sctp_auditing(4, inp, stcb, net);
1617 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SACK_TMR, SCTP_SO_NOT_LOCKED);
1619 case SCTP_TIMER_TYPE_SHUTDOWN:
1620 if ((stcb == NULL) || (inp == NULL)) {
1623 if (sctp_shutdown_timer(inp, stcb, net)) {
1624 /* no need to unlock on tcb its gone */
1627 SCTP_STAT_INCR(sctps_timoshutdown);
1628 stcb->asoc.timoshutdown++;
1629 #ifdef SCTP_AUDITING_ENABLED
1630 sctp_auditing(4, inp, stcb, net);
1632 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_TMR, SCTP_SO_NOT_LOCKED);
1634 case SCTP_TIMER_TYPE_HEARTBEAT:
1635 if ((stcb == NULL) || (inp == NULL) || (net == NULL)) {
1638 SCTP_STAT_INCR(sctps_timoheartbeat);
1639 stcb->asoc.timoheartbeat++;
1640 if (sctp_heartbeat_timer(inp, stcb, net)) {
1641 /* no need to unlock on tcb its gone */
1644 #ifdef SCTP_AUDITING_ENABLED
1645 sctp_auditing(4, inp, stcb, net);
1647 if (!(net->dest_state & SCTP_ADDR_NOHB)) {
1648 sctp_timer_start(SCTP_TIMER_TYPE_HEARTBEAT, inp, stcb, net);
1649 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_HB_TMR, SCTP_SO_NOT_LOCKED);
1652 case SCTP_TIMER_TYPE_COOKIE:
1653 if ((stcb == NULL) || (inp == NULL)) {
1656 if (sctp_cookie_timer(inp, stcb, net)) {
1657 /* no need to unlock on tcb its gone */
1660 SCTP_STAT_INCR(sctps_timocookie);
1661 stcb->asoc.timocookie++;
1662 #ifdef SCTP_AUDITING_ENABLED
1663 sctp_auditing(4, inp, stcb, net);
1666 * We consider T3 and Cookie timer pretty much the same with
1667 * respect to where from in chunk_output.
1669 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_T3, SCTP_SO_NOT_LOCKED);
1671 case SCTP_TIMER_TYPE_NEWCOOKIE:
1679 SCTP_STAT_INCR(sctps_timosecret);
1680 (void)SCTP_GETTIME_TIMEVAL(&tv);
1681 SCTP_INP_WLOCK(inp);
1682 inp->sctp_ep.time_of_secret_change = tv.tv_sec;
1683 inp->sctp_ep.last_secret_number =
1684 inp->sctp_ep.current_secret_number;
1685 inp->sctp_ep.current_secret_number++;
1686 if (inp->sctp_ep.current_secret_number >=
1687 SCTP_HOW_MANY_SECRETS) {
1688 inp->sctp_ep.current_secret_number = 0;
1690 secret = (int)inp->sctp_ep.current_secret_number;
1691 for (i = 0; i < SCTP_NUMBER_OF_SECRETS; i++) {
1692 inp->sctp_ep.secret_key[secret][i] =
1693 sctp_select_initial_TSN(&inp->sctp_ep);
1695 SCTP_INP_WUNLOCK(inp);
1696 sctp_timer_start(SCTP_TIMER_TYPE_NEWCOOKIE, inp, stcb, net);
1700 case SCTP_TIMER_TYPE_PATHMTURAISE:
1701 if ((stcb == NULL) || (inp == NULL)) {
1704 SCTP_STAT_INCR(sctps_timopathmtu);
1705 sctp_pathmtu_timer(inp, stcb, net);
1708 case SCTP_TIMER_TYPE_SHUTDOWNACK:
1709 if ((stcb == NULL) || (inp == NULL)) {
1712 if (sctp_shutdownack_timer(inp, stcb, net)) {
1713 /* no need to unlock on tcb its gone */
1716 SCTP_STAT_INCR(sctps_timoshutdownack);
1717 stcb->asoc.timoshutdownack++;
1718 #ifdef SCTP_AUDITING_ENABLED
1719 sctp_auditing(4, inp, stcb, net);
1721 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_SHUT_ACK_TMR, SCTP_SO_NOT_LOCKED);
1723 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
1724 if ((stcb == NULL) || (inp == NULL)) {
1727 SCTP_STAT_INCR(sctps_timoshutdownguard);
1728 sctp_abort_an_association(inp, stcb,
1729 SCTP_SHUTDOWN_GUARD_EXPIRES, NULL, SCTP_SO_NOT_LOCKED);
1730 /* no need to unlock on tcb its gone */
1733 case SCTP_TIMER_TYPE_STRRESET:
1734 if ((stcb == NULL) || (inp == NULL)) {
1737 if (sctp_strreset_timer(inp, stcb, net)) {
1738 /* no need to unlock on tcb its gone */
1741 SCTP_STAT_INCR(sctps_timostrmrst);
1742 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_STRRST_TMR, SCTP_SO_NOT_LOCKED);
1744 case SCTP_TIMER_TYPE_ASCONF:
1745 if ((stcb == NULL) || (inp == NULL)) {
1748 if (sctp_asconf_timer(inp, stcb, net)) {
1749 /* no need to unlock on tcb its gone */
1752 SCTP_STAT_INCR(sctps_timoasconf);
1753 #ifdef SCTP_AUDITING_ENABLED
1754 sctp_auditing(4, inp, stcb, net);
1756 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_ASCONF_TMR, SCTP_SO_NOT_LOCKED);
1758 case SCTP_TIMER_TYPE_PRIM_DELETED:
1759 if ((stcb == NULL) || (inp == NULL)) {
1762 sctp_delete_prim_timer(inp, stcb, net);
1763 SCTP_STAT_INCR(sctps_timodelprim);
1766 case SCTP_TIMER_TYPE_AUTOCLOSE:
1767 if ((stcb == NULL) || (inp == NULL)) {
1770 SCTP_STAT_INCR(sctps_timoautoclose);
1771 sctp_autoclose_timer(inp, stcb, net);
1772 sctp_chunk_output(inp, stcb, SCTP_OUTPUT_FROM_AUTOCLOSE_TMR, SCTP_SO_NOT_LOCKED);
1775 case SCTP_TIMER_TYPE_ASOCKILL:
1776 if ((stcb == NULL) || (inp == NULL)) {
1779 SCTP_STAT_INCR(sctps_timoassockill);
1780 /* Can we free it yet? */
1781 SCTP_INP_DECR_REF(inp);
1782 sctp_timer_stop(SCTP_TIMER_TYPE_ASOCKILL, inp, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_1);
1783 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1784 so = SCTP_INP_SO(inp);
1785 atomic_add_int(&stcb->asoc.refcnt, 1);
1786 SCTP_TCB_UNLOCK(stcb);
1787 SCTP_SOCKET_LOCK(so, 1);
1788 SCTP_TCB_LOCK(stcb);
1789 atomic_subtract_int(&stcb->asoc.refcnt, 1);
1791 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_2);
1792 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
1793 SCTP_SOCKET_UNLOCK(so, 1);
1796 * free asoc, always unlocks (or destroy's) so prevent
1797 * duplicate unlock or unlock of a free mtx :-0
1801 case SCTP_TIMER_TYPE_INPKILL:
1802 SCTP_STAT_INCR(sctps_timoinpkill);
1807 * special case, take away our increment since WE are the
1810 SCTP_INP_DECR_REF(inp);
1811 sctp_timer_stop(SCTP_TIMER_TYPE_INPKILL, inp, NULL, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_3);
1812 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
1813 SCTP_CALLED_FROM_INPKILL_TIMER);
1817 SCTPDBG(SCTP_DEBUG_TIMER1, "sctp_timeout_handler:unknown timer %d\n",
1821 #ifdef SCTP_AUDITING_ENABLED
1822 sctp_audit_log(0xF1, (uint8_t) tmr->type);
1824 sctp_auditing(5, inp, stcb, net);
1826 if ((did_output) && stcb) {
1828 * Now we need to clean up the control chunk chain if an
1829 * ECNE is on it. It must be marked as UNSENT again so next
1830 * call will continue to send it until such time that we get
1831 * a CWR, to remove it. It is, however, less likely that we
1832 * will find a ecn echo on the chain though.
1834 sctp_fix_ecn_echo(&stcb->asoc);
1838 SCTP_TCB_UNLOCK(stcb);
1842 SCTP_INP_DECR_REF(inp);
1845 SCTPDBG(SCTP_DEBUG_TIMER1, "Timer now complete (type %d)\n",
1851 sctp_timer_start(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
1852 struct sctp_nets *net)
1855 struct sctp_timer *tmr;
1857 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) && (inp == NULL))
1862 SCTP_TCB_LOCK_ASSERT(stcb);
1865 case SCTP_TIMER_TYPE_ZERO_COPY:
1866 tmr = &inp->sctp_ep.zero_copy_timer;
1867 to_ticks = SCTP_ZERO_COPY_TICK_DELAY;
1869 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
1870 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
1871 to_ticks = SCTP_ZERO_COPY_SENDQ_TICK_DELAY;
1873 case SCTP_TIMER_TYPE_ADDR_WQ:
1874 /* Only 1 tick away :-) */
1875 tmr = &SCTP_BASE_INFO(addr_wq_timer);
1876 to_ticks = SCTP_ADDRESS_TICK_DELAY;
1878 case SCTP_TIMER_TYPE_SEND:
1879 /* Here we use the RTO timer */
1883 if ((stcb == NULL) || (net == NULL)) {
1886 tmr = &net->rxt_timer;
1887 if (net->RTO == 0) {
1888 rto_val = stcb->asoc.initial_rto;
1892 to_ticks = MSEC_TO_TICKS(rto_val);
1895 case SCTP_TIMER_TYPE_INIT:
1897 * Here we use the INIT timer default usually about 1
1900 if ((stcb == NULL) || (net == NULL)) {
1903 tmr = &net->rxt_timer;
1904 if (net->RTO == 0) {
1905 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1907 to_ticks = MSEC_TO_TICKS(net->RTO);
1910 case SCTP_TIMER_TYPE_RECV:
1912 * Here we use the Delayed-Ack timer value from the inp
1913 * ususually about 200ms.
1918 tmr = &stcb->asoc.dack_timer;
1919 to_ticks = MSEC_TO_TICKS(stcb->asoc.delayed_ack);
1921 case SCTP_TIMER_TYPE_SHUTDOWN:
1922 /* Here we use the RTO of the destination. */
1923 if ((stcb == NULL) || (net == NULL)) {
1926 if (net->RTO == 0) {
1927 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1929 to_ticks = MSEC_TO_TICKS(net->RTO);
1931 tmr = &net->rxt_timer;
1933 case SCTP_TIMER_TYPE_HEARTBEAT:
1935 * the net is used here so that we can add in the RTO. Even
1936 * though we use a different timer. We also add the HB timer
1937 * PLUS a random jitter.
1939 if ((inp == NULL) || (stcb == NULL) || (net == NULL)) {
1945 if ((net->dest_state & SCTP_ADDR_NOHB) &&
1946 !(net->dest_state & SCTP_ADDR_UNCONFIRMED)) {
1949 if (net->RTO == 0) {
1950 to_ticks = stcb->asoc.initial_rto;
1952 to_ticks = net->RTO;
1954 rndval = sctp_select_initial_TSN(&inp->sctp_ep);
1955 jitter = rndval % to_ticks;
1956 if (jitter >= (to_ticks >> 1)) {
1957 to_ticks = to_ticks + (jitter - (to_ticks >> 1));
1959 to_ticks = to_ticks - jitter;
1961 if (!(net->dest_state & SCTP_ADDR_UNCONFIRMED) &&
1962 !(net->dest_state & SCTP_ADDR_PF)) {
1963 to_ticks += net->heart_beat_delay;
1966 * Now we must convert the to_ticks that are now in
1969 to_ticks = MSEC_TO_TICKS(to_ticks);
1970 tmr = &net->hb_timer;
1973 case SCTP_TIMER_TYPE_COOKIE:
1975 * Here we can use the RTO timer from the network since one
1976 * RTT was compelete. If a retran happened then we will be
1977 * using the RTO initial value.
1979 if ((stcb == NULL) || (net == NULL)) {
1982 if (net->RTO == 0) {
1983 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
1985 to_ticks = MSEC_TO_TICKS(net->RTO);
1987 tmr = &net->rxt_timer;
1989 case SCTP_TIMER_TYPE_NEWCOOKIE:
1991 * nothing needed but the endpoint here ususually about 60
1997 tmr = &inp->sctp_ep.signature_change;
1998 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_SIGNATURE];
2000 case SCTP_TIMER_TYPE_ASOCKILL:
2004 tmr = &stcb->asoc.strreset_timer;
2005 to_ticks = MSEC_TO_TICKS(SCTP_ASOC_KILL_TIMEOUT);
2007 case SCTP_TIMER_TYPE_INPKILL:
2009 * The inp is setup to die. We re-use the signature_chage
2010 * timer since that has stopped and we are in the GONE
2016 tmr = &inp->sctp_ep.signature_change;
2017 to_ticks = MSEC_TO_TICKS(SCTP_INP_KILL_TIMEOUT);
2019 case SCTP_TIMER_TYPE_PATHMTURAISE:
2021 * Here we use the value found in the EP for PMTU ususually
2024 if ((stcb == NULL) || (inp == NULL)) {
2030 if (net->dest_state & SCTP_ADDR_NO_PMTUD) {
2033 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_PMTU];
2034 tmr = &net->pmtu_timer;
2036 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2037 /* Here we use the RTO of the destination */
2038 if ((stcb == NULL) || (net == NULL)) {
2041 if (net->RTO == 0) {
2042 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2044 to_ticks = MSEC_TO_TICKS(net->RTO);
2046 tmr = &net->rxt_timer;
2048 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2050 * Here we use the endpoints shutdown guard timer usually
2053 if ((inp == NULL) || (stcb == NULL)) {
2056 to_ticks = inp->sctp_ep.sctp_timeoutticks[SCTP_TIMER_MAXSHUTDOWN];
2057 tmr = &stcb->asoc.shut_guard_timer;
2059 case SCTP_TIMER_TYPE_STRRESET:
2061 * Here the timer comes from the stcb but its value is from
2064 if ((stcb == NULL) || (net == NULL)) {
2067 if (net->RTO == 0) {
2068 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2070 to_ticks = MSEC_TO_TICKS(net->RTO);
2072 tmr = &stcb->asoc.strreset_timer;
2074 case SCTP_TIMER_TYPE_ASCONF:
2076 * Here the timer comes from the stcb but its value is from
2079 if ((stcb == NULL) || (net == NULL)) {
2082 if (net->RTO == 0) {
2083 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2085 to_ticks = MSEC_TO_TICKS(net->RTO);
2087 tmr = &stcb->asoc.asconf_timer;
2089 case SCTP_TIMER_TYPE_PRIM_DELETED:
2090 if ((stcb == NULL) || (net != NULL)) {
2093 to_ticks = MSEC_TO_TICKS(stcb->asoc.initial_rto);
2094 tmr = &stcb->asoc.delete_prim_timer;
2096 case SCTP_TIMER_TYPE_AUTOCLOSE:
2100 if (stcb->asoc.sctp_autoclose_ticks == 0) {
2102 * Really an error since stcb is NOT set to
2107 to_ticks = stcb->asoc.sctp_autoclose_ticks;
2108 tmr = &stcb->asoc.autoclose_timer;
2111 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2112 __FUNCTION__, t_type);
2116 if ((to_ticks <= 0) || (tmr == NULL)) {
2117 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: %d:software error to_ticks:%d tmr:%p not set ??\n",
2118 __FUNCTION__, t_type, to_ticks, tmr);
2121 if (SCTP_OS_TIMER_PENDING(&tmr->timer)) {
2123 * we do NOT allow you to have it already running. if it is
2124 * we leave the current one up unchanged
2128 /* At this point we can proceed */
2129 if (t_type == SCTP_TIMER_TYPE_SEND) {
2130 stcb->asoc.num_send_timers_up++;
2132 tmr->stopped_from = 0;
2134 tmr->ep = (void *)inp;
2135 tmr->tcb = (void *)stcb;
2136 tmr->net = (void *)net;
2137 tmr->self = (void *)tmr;
2138 tmr->vnet = (void *)curvnet;
2139 tmr->ticks = sctp_get_tick_count();
2140 (void)SCTP_OS_TIMER_START(&tmr->timer, to_ticks, sctp_timeout_handler, tmr);
2145 sctp_timer_stop(int t_type, struct sctp_inpcb *inp, struct sctp_tcb *stcb,
2146 struct sctp_nets *net, uint32_t from)
2148 struct sctp_timer *tmr;
2150 if ((t_type != SCTP_TIMER_TYPE_ADDR_WQ) &&
2156 SCTP_TCB_LOCK_ASSERT(stcb);
2159 case SCTP_TIMER_TYPE_ZERO_COPY:
2160 tmr = &inp->sctp_ep.zero_copy_timer;
2162 case SCTP_TIMER_TYPE_ZCOPY_SENDQ:
2163 tmr = &inp->sctp_ep.zero_copy_sendq_timer;
2165 case SCTP_TIMER_TYPE_ADDR_WQ:
2166 tmr = &SCTP_BASE_INFO(addr_wq_timer);
2168 case SCTP_TIMER_TYPE_SEND:
2169 if ((stcb == NULL) || (net == NULL)) {
2172 tmr = &net->rxt_timer;
2174 case SCTP_TIMER_TYPE_INIT:
2175 if ((stcb == NULL) || (net == NULL)) {
2178 tmr = &net->rxt_timer;
2180 case SCTP_TIMER_TYPE_RECV:
2184 tmr = &stcb->asoc.dack_timer;
2186 case SCTP_TIMER_TYPE_SHUTDOWN:
2187 if ((stcb == NULL) || (net == NULL)) {
2190 tmr = &net->rxt_timer;
2192 case SCTP_TIMER_TYPE_HEARTBEAT:
2193 if ((stcb == NULL) || (net == NULL)) {
2196 tmr = &net->hb_timer;
2198 case SCTP_TIMER_TYPE_COOKIE:
2199 if ((stcb == NULL) || (net == NULL)) {
2202 tmr = &net->rxt_timer;
2204 case SCTP_TIMER_TYPE_NEWCOOKIE:
2205 /* nothing needed but the endpoint here */
2206 tmr = &inp->sctp_ep.signature_change;
2208 * We re-use the newcookie timer for the INP kill timer. We
2209 * must assure that we do not kill it by accident.
2212 case SCTP_TIMER_TYPE_ASOCKILL:
2214 * Stop the asoc kill timer.
2219 tmr = &stcb->asoc.strreset_timer;
2222 case SCTP_TIMER_TYPE_INPKILL:
2224 * The inp is setup to die. We re-use the signature_chage
2225 * timer since that has stopped and we are in the GONE
2228 tmr = &inp->sctp_ep.signature_change;
2230 case SCTP_TIMER_TYPE_PATHMTURAISE:
2231 if ((stcb == NULL) || (net == NULL)) {
2234 tmr = &net->pmtu_timer;
2236 case SCTP_TIMER_TYPE_SHUTDOWNACK:
2237 if ((stcb == NULL) || (net == NULL)) {
2240 tmr = &net->rxt_timer;
2242 case SCTP_TIMER_TYPE_SHUTDOWNGUARD:
2246 tmr = &stcb->asoc.shut_guard_timer;
2248 case SCTP_TIMER_TYPE_STRRESET:
2252 tmr = &stcb->asoc.strreset_timer;
2254 case SCTP_TIMER_TYPE_ASCONF:
2258 tmr = &stcb->asoc.asconf_timer;
2260 case SCTP_TIMER_TYPE_PRIM_DELETED:
2264 tmr = &stcb->asoc.delete_prim_timer;
2266 case SCTP_TIMER_TYPE_AUTOCLOSE:
2270 tmr = &stcb->asoc.autoclose_timer;
2273 SCTPDBG(SCTP_DEBUG_TIMER1, "%s: Unknown timer type %d\n",
2274 __FUNCTION__, t_type);
2280 if ((tmr->type != t_type) && tmr->type) {
2282 * Ok we have a timer that is under joint use. Cookie timer
2283 * per chance with the SEND timer. We therefore are NOT
2284 * running the timer that the caller wants stopped. So just
2289 if ((t_type == SCTP_TIMER_TYPE_SEND) && (stcb != NULL)) {
2290 stcb->asoc.num_send_timers_up--;
2291 if (stcb->asoc.num_send_timers_up < 0) {
2292 stcb->asoc.num_send_timers_up = 0;
2296 tmr->stopped_from = from;
2297 (void)SCTP_OS_TIMER_STOP(&tmr->timer);
2302 sctp_calculate_len(struct mbuf *m)
2309 tlen += SCTP_BUF_LEN(at);
2310 at = SCTP_BUF_NEXT(at);
2316 sctp_mtu_size_reset(struct sctp_inpcb *inp,
2317 struct sctp_association *asoc, uint32_t mtu)
2320 * Reset the P-MTU size on this association, this involves changing
2321 * the asoc MTU, going through ANY chunk+overhead larger than mtu to
2322 * allow the DF flag to be cleared.
2324 struct sctp_tmit_chunk *chk;
2325 unsigned int eff_mtu, ovh;
2327 asoc->smallest_mtu = mtu;
2328 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
2329 ovh = SCTP_MIN_OVERHEAD;
2331 ovh = SCTP_MIN_V4_OVERHEAD;
2333 eff_mtu = mtu - ovh;
2334 TAILQ_FOREACH(chk, &asoc->send_queue, sctp_next) {
2335 if (chk->send_size > eff_mtu) {
2336 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2339 TAILQ_FOREACH(chk, &asoc->sent_queue, sctp_next) {
2340 if (chk->send_size > eff_mtu) {
2341 chk->flags |= CHUNK_FLAGS_FRAGMENT_OK;
2348 * given an association and starting time of the current RTT period return
2349 * RTO in number of msecs net should point to the current network
2353 sctp_calculate_rto(struct sctp_tcb *stcb,
2354 struct sctp_association *asoc,
2355 struct sctp_nets *net,
2356 struct timeval *told,
2357 int safe, int rtt_from_sack)
2360 * given an association and the starting time of the current RTT
2361 * period (in value1/value2) return RTO in number of msecs.
2363 int32_t rtt; /* RTT in ms */
2365 int first_measure = 0;
2366 struct timeval now, then, *old;
2368 /* Copy it out for sparc64 */
2369 if (safe == sctp_align_unsafe_makecopy) {
2371 memcpy(&then, told, sizeof(struct timeval));
2372 } else if (safe == sctp_align_safe_nocopy) {
2376 SCTP_PRINTF("Huh, bad rto calc call\n");
2379 /************************/
2380 /* 1. calculate new RTT */
2381 /************************/
2382 /* get the current time */
2383 if (stcb->asoc.use_precise_time) {
2384 (void)SCTP_GETPTIME_TIMEVAL(&now);
2386 (void)SCTP_GETTIME_TIMEVAL(&now);
2388 timevalsub(&now, old);
2389 /* store the current RTT in us */
2390 net->rtt = (uint64_t) 10000000 *(uint64_t) now.tv_sec +
2391 (uint64_t) now.tv_usec;
2393 /* computer rtt in ms */
2394 rtt = net->rtt / 1000;
2395 if ((asoc->cc_functions.sctp_rtt_calculated) && (rtt_from_sack == SCTP_RTT_FROM_DATA)) {
2397 * Tell the CC module that a new update has just occurred
2400 (*asoc->cc_functions.sctp_rtt_calculated) (stcb, net, &now);
2403 * Do we need to determine the lan? We do this only on sacks i.e.
2404 * RTT being determined from data not non-data (HB/INIT->INITACK).
2406 if ((rtt_from_sack == SCTP_RTT_FROM_DATA) &&
2407 (net->lan_type == SCTP_LAN_UNKNOWN)) {
2408 if (net->rtt > SCTP_LOCAL_LAN_RTT) {
2409 net->lan_type = SCTP_LAN_INTERNET;
2411 net->lan_type = SCTP_LAN_LOCAL;
2414 /***************************/
2415 /* 2. update RTTVAR & SRTT */
2416 /***************************/
2418 * Compute the scaled average lastsa and the
2419 * scaled variance lastsv as described in van Jacobson
2420 * Paper "Congestion Avoidance and Control", Annex A.
2422 * (net->lastsa >> SCTP_RTT_SHIFT) is the srtt
2423 * (net->lastsa >> SCTP_RTT_VAR_SHIFT) is the rttvar
2425 if (net->RTO_measured) {
2426 rtt -= (net->lastsa >> SCTP_RTT_SHIFT);
2431 rtt -= (net->lastsv >> SCTP_RTT_VAR_SHIFT);
2433 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2434 rto_logging(net, SCTP_LOG_RTTVAR);
2437 /* First RTO measurment */
2438 net->RTO_measured = 1;
2440 net->lastsa = rtt << SCTP_RTT_SHIFT;
2441 net->lastsv = (rtt / 2) << SCTP_RTT_VAR_SHIFT;
2442 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RTTVAR_LOGGING_ENABLE) {
2443 rto_logging(net, SCTP_LOG_INITIAL_RTT);
2446 if (net->lastsv == 0) {
2447 net->lastsv = SCTP_CLOCK_GRANULARITY;
2449 new_rto = (net->lastsa >> SCTP_RTT_SHIFT) + net->lastsv;
2450 if ((new_rto > SCTP_SAT_NETWORK_MIN) &&
2451 (stcb->asoc.sat_network_lockout == 0)) {
2452 stcb->asoc.sat_network = 1;
2453 } else if ((!first_measure) && stcb->asoc.sat_network) {
2454 stcb->asoc.sat_network = 0;
2455 stcb->asoc.sat_network_lockout = 1;
2457 /* bound it, per C6/C7 in Section 5.3.1 */
2458 if (new_rto < stcb->asoc.minrto) {
2459 new_rto = stcb->asoc.minrto;
2461 if (new_rto > stcb->asoc.maxrto) {
2462 new_rto = stcb->asoc.maxrto;
2464 /* we are now returning the RTO */
2469 * return a pointer to a contiguous piece of data from the given mbuf chain
2470 * starting at 'off' for 'len' bytes. If the desired piece spans more than
2471 * one mbuf, a copy is made at 'ptr'. caller must ensure that the buffer size
2472 * is >= 'len' returns NULL if there there isn't 'len' bytes in the chain.
2475 sctp_m_getptr(struct mbuf *m, int off, int len, uint8_t * in_ptr)
2481 if ((off < 0) || (len <= 0))
2484 /* find the desired start location */
2485 while ((m != NULL) && (off > 0)) {
2486 if (off < SCTP_BUF_LEN(m))
2488 off -= SCTP_BUF_LEN(m);
2489 m = SCTP_BUF_NEXT(m);
2494 /* is the current mbuf large enough (eg. contiguous)? */
2495 if ((SCTP_BUF_LEN(m) - off) >= len) {
2496 return (mtod(m, caddr_t)+off);
2498 /* else, it spans more than one mbuf, so save a temp copy... */
2499 while ((m != NULL) && (len > 0)) {
2500 count = min(SCTP_BUF_LEN(m) - off, len);
2501 bcopy(mtod(m, caddr_t)+off, ptr, count);
2505 m = SCTP_BUF_NEXT(m);
2507 if ((m == NULL) && (len > 0))
2510 return ((caddr_t)in_ptr);
2516 struct sctp_paramhdr *
2517 sctp_get_next_param(struct mbuf *m,
2519 struct sctp_paramhdr *pull,
2522 /* This just provides a typed signature to Peter's Pull routine */
2523 return ((struct sctp_paramhdr *)sctp_m_getptr(m, offset, pull_limit,
2529 sctp_add_pad_tombuf(struct mbuf *m, int padlen)
2532 * add padlen bytes of 0 filled padding to the end of the mbuf. If
2533 * padlen is > 3 this routine will fail.
2539 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
2542 if (padlen <= M_TRAILINGSPACE(m)) {
2544 * The easy way. We hope the majority of the time we hit
2547 dp = (uint8_t *) (mtod(m, caddr_t)+SCTP_BUF_LEN(m));
2548 SCTP_BUF_LEN(m) += padlen;
2550 /* Hard way we must grow the mbuf */
2553 tmp = sctp_get_mbuf_for_msg(padlen, 0, M_DONTWAIT, 1, MT_DATA);
2555 /* Out of space GAK! we are in big trouble. */
2556 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
2559 /* setup and insert in middle */
2560 SCTP_BUF_LEN(tmp) = padlen;
2561 SCTP_BUF_NEXT(tmp) = NULL;
2562 SCTP_BUF_NEXT(m) = tmp;
2563 dp = mtod(tmp, uint8_t *);
2565 /* zero out the pad */
2566 for (i = 0; i < padlen; i++) {
2574 sctp_pad_lastmbuf(struct mbuf *m, int padval, struct mbuf *last_mbuf)
2576 /* find the last mbuf in chain and pad it */
2581 return (sctp_add_pad_tombuf(last_mbuf, padval));
2584 if (SCTP_BUF_NEXT(m_at) == NULL) {
2585 return (sctp_add_pad_tombuf(m_at, padval));
2587 m_at = SCTP_BUF_NEXT(m_at);
2590 SCTP_LTRACE_ERR_RET_PKT(m, NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
2595 sctp_notify_assoc_change(uint32_t event, struct sctp_tcb *stcb,
2596 uint32_t error, int so_locked
2597 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2602 struct mbuf *m_notify;
2603 struct sctp_assoc_change *sac;
2604 struct sctp_queued_to_read *control;
2606 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2612 * For TCP model AND UDP connected sockets we will send an error up
2613 * when an ABORT comes in.
2615 if (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
2616 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) &&
2617 ((event == SCTP_COMM_LOST) || (event == SCTP_CANT_STR_ASSOC))) {
2618 if (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_COOKIE_WAIT) {
2619 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNREFUSED);
2620 stcb->sctp_socket->so_error = ECONNREFUSED;
2622 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
2623 stcb->sctp_socket->so_error = ECONNRESET;
2625 /* Wake ANY sleepers */
2626 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2627 so = SCTP_INP_SO(stcb->sctp_ep);
2629 atomic_add_int(&stcb->asoc.refcnt, 1);
2630 SCTP_TCB_UNLOCK(stcb);
2631 SCTP_SOCKET_LOCK(so, 1);
2632 SCTP_TCB_LOCK(stcb);
2633 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2634 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2635 SCTP_SOCKET_UNLOCK(so, 1);
2640 socantrcvmore(stcb->sctp_socket);
2641 sorwakeup(stcb->sctp_socket);
2642 sowwakeup(stcb->sctp_socket);
2643 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2645 SCTP_SOCKET_UNLOCK(so, 1);
2649 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVASSOCEVNT)) {
2650 /* event not enabled */
2653 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_assoc_change), 0, M_DONTWAIT, 1, MT_DATA);
2654 if (m_notify == NULL)
2657 SCTP_BUF_LEN(m_notify) = 0;
2659 sac = mtod(m_notify, struct sctp_assoc_change *);
2660 sac->sac_type = SCTP_ASSOC_CHANGE;
2662 sac->sac_length = sizeof(struct sctp_assoc_change);
2663 sac->sac_state = event;
2664 sac->sac_error = error;
2665 /* XXX verify these stream counts */
2666 sac->sac_outbound_streams = stcb->asoc.streamoutcnt;
2667 sac->sac_inbound_streams = stcb->asoc.streamincnt;
2668 sac->sac_assoc_id = sctp_get_associd(stcb);
2669 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_assoc_change);
2670 SCTP_BUF_NEXT(m_notify) = NULL;
2671 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2672 0, 0, stcb->asoc.context, 0, 0, 0,
2674 if (control == NULL) {
2676 sctp_m_freem(m_notify);
2679 control->length = SCTP_BUF_LEN(m_notify);
2680 /* not that we need this */
2681 control->tail_mbuf = m_notify;
2682 control->spec_flags = M_NOTIFICATION;
2683 sctp_add_to_readq(stcb->sctp_ep, stcb,
2685 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD,
2687 if (event == SCTP_COMM_LOST) {
2688 /* Wake up any sleeper */
2689 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2690 so = SCTP_INP_SO(stcb->sctp_ep);
2692 atomic_add_int(&stcb->asoc.refcnt, 1);
2693 SCTP_TCB_UNLOCK(stcb);
2694 SCTP_SOCKET_LOCK(so, 1);
2695 SCTP_TCB_LOCK(stcb);
2696 atomic_subtract_int(&stcb->asoc.refcnt, 1);
2697 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
2698 SCTP_SOCKET_UNLOCK(so, 1);
2703 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
2704 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
2706 SCTP_SOCKET_UNLOCK(so, 1);
2713 sctp_notify_peer_addr_change(struct sctp_tcb *stcb, uint32_t state,
2714 struct sockaddr *sa, uint32_t error)
2716 struct mbuf *m_notify;
2717 struct sctp_paddr_change *spc;
2718 struct sctp_queued_to_read *control;
2720 if ((stcb == NULL) ||
2721 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVPADDREVNT)) {
2722 /* event not enabled */
2725 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_paddr_change), 0, M_DONTWAIT, 1, MT_DATA);
2726 if (m_notify == NULL)
2728 SCTP_BUF_LEN(m_notify) = 0;
2729 spc = mtod(m_notify, struct sctp_paddr_change *);
2730 spc->spc_type = SCTP_PEER_ADDR_CHANGE;
2732 spc->spc_length = sizeof(struct sctp_paddr_change);
2733 switch (sa->sa_family) {
2736 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in));
2742 struct sockaddr_in6 *sin6;
2744 memcpy(&spc->spc_aaddr, sa, sizeof(struct sockaddr_in6));
2746 sin6 = (struct sockaddr_in6 *)&spc->spc_aaddr;
2747 if (IN6_IS_SCOPE_LINKLOCAL(&sin6->sin6_addr)) {
2748 if (sin6->sin6_scope_id == 0) {
2749 /* recover scope_id for user */
2750 (void)sa6_recoverscope(sin6);
2752 /* clear embedded scope_id for user */
2753 in6_clearscope(&sin6->sin6_addr);
2763 spc->spc_state = state;
2764 spc->spc_error = error;
2765 spc->spc_assoc_id = sctp_get_associd(stcb);
2767 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_paddr_change);
2768 SCTP_BUF_NEXT(m_notify) = NULL;
2770 /* append to socket */
2771 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2772 0, 0, stcb->asoc.context, 0, 0, 0,
2774 if (control == NULL) {
2776 sctp_m_freem(m_notify);
2779 control->length = SCTP_BUF_LEN(m_notify);
2780 control->spec_flags = M_NOTIFICATION;
2781 /* not that we need this */
2782 control->tail_mbuf = m_notify;
2783 sctp_add_to_readq(stcb->sctp_ep, stcb,
2785 &stcb->sctp_socket->so_rcv, 1,
2786 SCTP_READ_LOCK_NOT_HELD,
2787 SCTP_SO_NOT_LOCKED);
2792 sctp_notify_send_failed(struct sctp_tcb *stcb, uint32_t error,
2793 struct sctp_tmit_chunk *chk, int so_locked
2794 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2799 struct mbuf *m_notify;
2800 struct sctp_send_failed *ssf;
2801 struct sctp_queued_to_read *control;
2804 if ((stcb == NULL) ||
2805 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT)) {
2806 /* event not enabled */
2809 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_send_failed), 0, M_DONTWAIT, 1, MT_DATA);
2810 if (m_notify == NULL)
2813 length = sizeof(struct sctp_send_failed) + chk->send_size;
2814 length -= sizeof(struct sctp_data_chunk);
2815 SCTP_BUF_LEN(m_notify) = 0;
2816 ssf = mtod(m_notify, struct sctp_send_failed *);
2817 ssf->ssf_type = SCTP_SEND_FAILED;
2818 if (error == SCTP_NOTIFY_DATAGRAM_UNSENT)
2819 ssf->ssf_flags = SCTP_DATA_UNSENT;
2821 ssf->ssf_flags = SCTP_DATA_SENT;
2822 ssf->ssf_length = length;
2823 ssf->ssf_error = error;
2824 /* not exactly what the user sent in, but should be close :) */
2825 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2826 ssf->ssf_info.sinfo_stream = chk->rec.data.stream_number;
2827 ssf->ssf_info.sinfo_ssn = chk->rec.data.stream_seq;
2828 ssf->ssf_info.sinfo_flags = chk->rec.data.rcv_flags;
2829 ssf->ssf_info.sinfo_ppid = chk->rec.data.payloadtype;
2830 ssf->ssf_info.sinfo_context = chk->rec.data.context;
2831 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2832 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2836 * trim off the sctp chunk header(it should be there)
2838 if (chk->send_size >= sizeof(struct sctp_data_chunk)) {
2839 m_adj(chk->data, sizeof(struct sctp_data_chunk));
2840 sctp_mbuf_crush(chk->data);
2841 chk->send_size -= sizeof(struct sctp_data_chunk);
2844 SCTP_BUF_NEXT(m_notify) = chk->data;
2845 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2846 /* Steal off the mbuf */
2849 * For this case, we check the actual socket buffer, since the assoc
2850 * is going away we don't want to overfill the socket buffer for a
2853 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
2854 sctp_m_freem(m_notify);
2857 /* append to socket */
2858 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2859 0, 0, stcb->asoc.context, 0, 0, 0,
2861 if (control == NULL) {
2863 sctp_m_freem(m_notify);
2866 control->spec_flags = M_NOTIFICATION;
2867 sctp_add_to_readq(stcb->sctp_ep, stcb,
2869 &stcb->sctp_socket->so_rcv, 1,
2870 SCTP_READ_LOCK_NOT_HELD,
2876 sctp_notify_send_failed2(struct sctp_tcb *stcb, uint32_t error,
2877 struct sctp_stream_queue_pending *sp, int so_locked
2878 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
2883 struct mbuf *m_notify;
2884 struct sctp_send_failed *ssf;
2885 struct sctp_queued_to_read *control;
2888 if ((stcb == NULL) ||
2889 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSENDFAILEVNT)) {
2890 /* event not enabled */
2893 length = sizeof(struct sctp_send_failed) + sp->length;
2894 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_send_failed), 0, M_DONTWAIT, 1, MT_DATA);
2895 if (m_notify == NULL)
2898 SCTP_BUF_LEN(m_notify) = 0;
2899 ssf = mtod(m_notify, struct sctp_send_failed *);
2900 ssf->ssf_type = SCTP_SEND_FAILED;
2901 if (error == SCTP_NOTIFY_DATAGRAM_UNSENT)
2902 ssf->ssf_flags = SCTP_DATA_UNSENT;
2904 ssf->ssf_flags = SCTP_DATA_SENT;
2905 ssf->ssf_length = length;
2906 ssf->ssf_error = error;
2907 /* not exactly what the user sent in, but should be close :) */
2908 bzero(&ssf->ssf_info, sizeof(ssf->ssf_info));
2909 ssf->ssf_info.sinfo_stream = sp->stream;
2910 ssf->ssf_info.sinfo_ssn = sp->strseq;
2911 if (sp->some_taken) {
2912 ssf->ssf_info.sinfo_flags = SCTP_DATA_LAST_FRAG;
2914 ssf->ssf_info.sinfo_flags = SCTP_DATA_NOT_FRAG;
2916 ssf->ssf_info.sinfo_ppid = sp->ppid;
2917 ssf->ssf_info.sinfo_context = sp->context;
2918 ssf->ssf_info.sinfo_assoc_id = sctp_get_associd(stcb);
2919 ssf->ssf_assoc_id = sctp_get_associd(stcb);
2920 SCTP_BUF_NEXT(m_notify) = sp->data;
2921 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_send_failed);
2923 /* Steal off the mbuf */
2926 * For this case, we check the actual socket buffer, since the assoc
2927 * is going away we don't want to overfill the socket buffer for a
2930 if (sctp_sbspace_failedmsgs(&stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
2931 sctp_m_freem(m_notify);
2934 /* append to socket */
2935 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2936 0, 0, stcb->asoc.context, 0, 0, 0,
2938 if (control == NULL) {
2940 sctp_m_freem(m_notify);
2943 control->spec_flags = M_NOTIFICATION;
2944 sctp_add_to_readq(stcb->sctp_ep, stcb,
2946 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
2952 sctp_notify_adaptation_layer(struct sctp_tcb *stcb)
2954 struct mbuf *m_notify;
2955 struct sctp_adaptation_event *sai;
2956 struct sctp_queued_to_read *control;
2958 if ((stcb == NULL) ||
2959 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_ADAPTATIONEVNT)) {
2960 /* event not enabled */
2963 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_adaption_event), 0, M_DONTWAIT, 1, MT_DATA);
2964 if (m_notify == NULL)
2967 SCTP_BUF_LEN(m_notify) = 0;
2968 sai = mtod(m_notify, struct sctp_adaptation_event *);
2969 sai->sai_type = SCTP_ADAPTATION_INDICATION;
2971 sai->sai_length = sizeof(struct sctp_adaptation_event);
2972 sai->sai_adaptation_ind = stcb->asoc.peers_adaptation;
2973 sai->sai_assoc_id = sctp_get_associd(stcb);
2975 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_adaptation_event);
2976 SCTP_BUF_NEXT(m_notify) = NULL;
2978 /* append to socket */
2979 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
2980 0, 0, stcb->asoc.context, 0, 0, 0,
2982 if (control == NULL) {
2984 sctp_m_freem(m_notify);
2987 control->length = SCTP_BUF_LEN(m_notify);
2988 control->spec_flags = M_NOTIFICATION;
2989 /* not that we need this */
2990 control->tail_mbuf = m_notify;
2991 sctp_add_to_readq(stcb->sctp_ep, stcb,
2993 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
2996 /* This always must be called with the read-queue LOCKED in the INP */
2998 sctp_notify_partial_delivery_indication(struct sctp_tcb *stcb, uint32_t error,
2999 uint32_t val, int so_locked
3000 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3005 struct mbuf *m_notify;
3006 struct sctp_pdapi_event *pdapi;
3007 struct sctp_queued_to_read *control;
3010 if ((stcb == NULL) ||
3011 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_PDAPIEVNT)) {
3012 /* event not enabled */
3015 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
3018 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_pdapi_event), 0, M_DONTWAIT, 1, MT_DATA);
3019 if (m_notify == NULL)
3022 SCTP_BUF_LEN(m_notify) = 0;
3023 pdapi = mtod(m_notify, struct sctp_pdapi_event *);
3024 pdapi->pdapi_type = SCTP_PARTIAL_DELIVERY_EVENT;
3025 pdapi->pdapi_flags = 0;
3026 pdapi->pdapi_length = sizeof(struct sctp_pdapi_event);
3027 pdapi->pdapi_indication = error;
3028 pdapi->pdapi_stream = (val >> 16);
3029 pdapi->pdapi_seq = (val & 0x0000ffff);
3030 pdapi->pdapi_assoc_id = sctp_get_associd(stcb);
3032 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_pdapi_event);
3033 SCTP_BUF_NEXT(m_notify) = NULL;
3034 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3035 0, 0, stcb->asoc.context, 0, 0, 0,
3037 if (control == NULL) {
3039 sctp_m_freem(m_notify);
3042 control->spec_flags = M_NOTIFICATION;
3043 control->length = SCTP_BUF_LEN(m_notify);
3044 /* not that we need this */
3045 control->tail_mbuf = m_notify;
3046 control->held_length = 0;
3047 control->length = 0;
3048 sb = &stcb->sctp_socket->so_rcv;
3049 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3050 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m_notify));
3052 sctp_sballoc(stcb, sb, m_notify);
3053 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
3054 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
3056 atomic_add_int(&control->length, SCTP_BUF_LEN(m_notify));
3057 control->end_added = 1;
3058 if (stcb->asoc.control_pdapi)
3059 TAILQ_INSERT_AFTER(&stcb->sctp_ep->read_queue, stcb->asoc.control_pdapi, control, next);
3061 /* we really should not see this case */
3062 TAILQ_INSERT_TAIL(&stcb->sctp_ep->read_queue, control, next);
3064 if (stcb->sctp_ep && stcb->sctp_socket) {
3065 /* This should always be the case */
3066 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3069 so = SCTP_INP_SO(stcb->sctp_ep);
3071 atomic_add_int(&stcb->asoc.refcnt, 1);
3072 SCTP_TCB_UNLOCK(stcb);
3073 SCTP_SOCKET_LOCK(so, 1);
3074 SCTP_TCB_LOCK(stcb);
3075 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3076 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3077 SCTP_SOCKET_UNLOCK(so, 1);
3082 sctp_sorwakeup(stcb->sctp_ep, stcb->sctp_socket);
3083 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3085 SCTP_SOCKET_UNLOCK(so, 1);
3092 sctp_notify_shutdown_event(struct sctp_tcb *stcb)
3094 struct mbuf *m_notify;
3095 struct sctp_shutdown_event *sse;
3096 struct sctp_queued_to_read *control;
3099 * For TCP model AND UDP connected sockets we will send an error up
3100 * when an SHUTDOWN completes
3102 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
3103 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
3104 /* mark socket closed for read/write and wakeup! */
3105 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3108 so = SCTP_INP_SO(stcb->sctp_ep);
3109 atomic_add_int(&stcb->asoc.refcnt, 1);
3110 SCTP_TCB_UNLOCK(stcb);
3111 SCTP_SOCKET_LOCK(so, 1);
3112 SCTP_TCB_LOCK(stcb);
3113 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3114 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
3115 SCTP_SOCKET_UNLOCK(so, 1);
3119 socantsendmore(stcb->sctp_socket);
3120 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3121 SCTP_SOCKET_UNLOCK(so, 1);
3124 if (sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_RECVSHUTDOWNEVNT)) {
3125 /* event not enabled */
3128 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_shutdown_event), 0, M_DONTWAIT, 1, MT_DATA);
3129 if (m_notify == NULL)
3132 sse = mtod(m_notify, struct sctp_shutdown_event *);
3133 sse->sse_type = SCTP_SHUTDOWN_EVENT;
3135 sse->sse_length = sizeof(struct sctp_shutdown_event);
3136 sse->sse_assoc_id = sctp_get_associd(stcb);
3138 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_shutdown_event);
3139 SCTP_BUF_NEXT(m_notify) = NULL;
3141 /* append to socket */
3142 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3143 0, 0, stcb->asoc.context, 0, 0, 0,
3145 if (control == NULL) {
3147 sctp_m_freem(m_notify);
3150 control->spec_flags = M_NOTIFICATION;
3151 control->length = SCTP_BUF_LEN(m_notify);
3152 /* not that we need this */
3153 control->tail_mbuf = m_notify;
3154 sctp_add_to_readq(stcb->sctp_ep, stcb,
3156 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3160 sctp_notify_sender_dry_event(struct sctp_tcb *stcb,
3162 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3167 struct mbuf *m_notify;
3168 struct sctp_sender_dry_event *event;
3169 struct sctp_queued_to_read *control;
3171 if ((stcb == NULL) ||
3172 sctp_stcb_is_feature_off(stcb->sctp_ep, stcb, SCTP_PCB_FLAGS_DRYEVNT)) {
3173 /* event not enabled */
3176 m_notify = sctp_get_mbuf_for_msg(sizeof(struct sctp_sender_dry_event), 0, M_DONTWAIT, 1, MT_DATA);
3177 if (m_notify == NULL) {
3181 SCTP_BUF_LEN(m_notify) = 0;
3182 event = mtod(m_notify, struct sctp_sender_dry_event *);
3183 event->sender_dry_type = SCTP_SENDER_DRY_EVENT;
3184 event->sender_dry_flags = 0;
3185 event->sender_dry_length = sizeof(struct sctp_sender_dry_event);
3186 event->sender_dry_assoc_id = sctp_get_associd(stcb);
3188 SCTP_BUF_LEN(m_notify) = sizeof(struct sctp_sender_dry_event);
3189 SCTP_BUF_NEXT(m_notify) = NULL;
3191 /* append to socket */
3192 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3193 0, 0, stcb->asoc.context, 0, 0, 0,
3195 if (control == NULL) {
3197 sctp_m_freem(m_notify);
3200 control->length = SCTP_BUF_LEN(m_notify);
3201 control->spec_flags = M_NOTIFICATION;
3202 /* not that we need this */
3203 control->tail_mbuf = m_notify;
3204 sctp_add_to_readq(stcb->sctp_ep, stcb, control,
3205 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, so_locked);
3210 sctp_notify_stream_reset_add(struct sctp_tcb *stcb, int number_entries, int flag)
3212 struct mbuf *m_notify;
3213 struct sctp_queued_to_read *control;
3214 struct sctp_stream_reset_event *strreset;
3217 if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_STREAM_RESETEVNT)) {
3218 /* event not enabled */
3221 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA);
3222 if (m_notify == NULL)
3225 SCTP_BUF_LEN(m_notify) = 0;
3226 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3227 if (len > M_TRAILINGSPACE(m_notify)) {
3228 /* never enough room */
3229 sctp_m_freem(m_notify);
3232 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3233 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3234 strreset->strreset_flags = SCTP_STRRESET_ADD_STREAM | flag;
3235 strreset->strreset_length = len;
3236 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3237 strreset->strreset_list[0] = number_entries;
3239 SCTP_BUF_LEN(m_notify) = len;
3240 SCTP_BUF_NEXT(m_notify) = NULL;
3241 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3243 sctp_m_freem(m_notify);
3246 /* append to socket */
3247 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3248 0, 0, stcb->asoc.context, 0, 0, 0,
3250 if (control == NULL) {
3252 sctp_m_freem(m_notify);
3255 control->spec_flags = M_NOTIFICATION;
3256 control->length = SCTP_BUF_LEN(m_notify);
3257 /* not that we need this */
3258 control->tail_mbuf = m_notify;
3259 sctp_add_to_readq(stcb->sctp_ep, stcb,
3261 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3266 sctp_notify_stream_reset(struct sctp_tcb *stcb,
3267 int number_entries, uint16_t * list, int flag)
3269 struct mbuf *m_notify;
3270 struct sctp_queued_to_read *control;
3271 struct sctp_stream_reset_event *strreset;
3274 if (sctp_is_feature_off(stcb->sctp_ep, SCTP_PCB_FLAGS_STREAM_RESETEVNT)) {
3275 /* event not enabled */
3278 m_notify = sctp_get_mbuf_for_msg(MCLBYTES, 0, M_DONTWAIT, 1, MT_DATA);
3279 if (m_notify == NULL)
3282 SCTP_BUF_LEN(m_notify) = 0;
3283 len = sizeof(struct sctp_stream_reset_event) + (number_entries * sizeof(uint16_t));
3284 if (len > M_TRAILINGSPACE(m_notify)) {
3285 /* never enough room */
3286 sctp_m_freem(m_notify);
3289 strreset = mtod(m_notify, struct sctp_stream_reset_event *);
3290 strreset->strreset_type = SCTP_STREAM_RESET_EVENT;
3291 if (number_entries == 0) {
3292 strreset->strreset_flags = flag | SCTP_STRRESET_ALL_STREAMS;
3294 strreset->strreset_flags = flag | SCTP_STRRESET_STREAM_LIST;
3296 strreset->strreset_length = len;
3297 strreset->strreset_assoc_id = sctp_get_associd(stcb);
3298 if (number_entries) {
3301 for (i = 0; i < number_entries; i++) {
3302 strreset->strreset_list[i] = ntohs(list[i]);
3305 SCTP_BUF_LEN(m_notify) = len;
3306 SCTP_BUF_NEXT(m_notify) = NULL;
3307 if (sctp_sbspace(&stcb->asoc, &stcb->sctp_socket->so_rcv) < SCTP_BUF_LEN(m_notify)) {
3309 sctp_m_freem(m_notify);
3312 /* append to socket */
3313 control = sctp_build_readq_entry(stcb, stcb->asoc.primary_destination,
3314 0, 0, stcb->asoc.context, 0, 0, 0,
3316 if (control == NULL) {
3318 sctp_m_freem(m_notify);
3321 control->spec_flags = M_NOTIFICATION;
3322 control->length = SCTP_BUF_LEN(m_notify);
3323 /* not that we need this */
3324 control->tail_mbuf = m_notify;
3325 sctp_add_to_readq(stcb->sctp_ep, stcb,
3327 &stcb->sctp_socket->so_rcv, 1, SCTP_READ_LOCK_NOT_HELD, SCTP_SO_NOT_LOCKED);
3332 sctp_ulp_notify(uint32_t notification, struct sctp_tcb *stcb,
3333 uint32_t error, void *data, int so_locked
3334 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3339 if ((stcb == NULL) ||
3340 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3341 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3342 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3343 /* If the socket is gone we are out of here */
3346 if (stcb->sctp_socket->so_rcv.sb_state & SBS_CANTRCVMORE) {
3349 if (stcb && ((stcb->asoc.state & SCTP_STATE_COOKIE_WAIT) ||
3350 (stcb->asoc.state & SCTP_STATE_COOKIE_ECHOED))) {
3351 if ((notification == SCTP_NOTIFY_INTERFACE_DOWN) ||
3352 (notification == SCTP_NOTIFY_INTERFACE_UP) ||
3353 (notification == SCTP_NOTIFY_INTERFACE_CONFIRMED)) {
3354 /* Don't report these in front states */
3358 switch (notification) {
3359 case SCTP_NOTIFY_ASSOC_UP:
3360 if (stcb->asoc.assoc_up_sent == 0) {
3361 sctp_notify_assoc_change(SCTP_COMM_UP, stcb, error, so_locked);
3362 stcb->asoc.assoc_up_sent = 1;
3364 if (stcb->asoc.adaptation_needed && (stcb->asoc.adaptation_sent == 0)) {
3365 sctp_notify_adaptation_layer(stcb);
3367 if (stcb->asoc.peer_supports_auth == 0) {
3368 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3372 case SCTP_NOTIFY_ASSOC_DOWN:
3373 sctp_notify_assoc_change(SCTP_SHUTDOWN_COMP, stcb, error, so_locked);
3375 case SCTP_NOTIFY_INTERFACE_DOWN:
3377 struct sctp_nets *net;
3379 net = (struct sctp_nets *)data;
3380 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_UNREACHABLE,
3381 (struct sockaddr *)&net->ro._l_addr, error);
3384 case SCTP_NOTIFY_INTERFACE_UP:
3386 struct sctp_nets *net;
3388 net = (struct sctp_nets *)data;
3389 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_AVAILABLE,
3390 (struct sockaddr *)&net->ro._l_addr, error);
3393 case SCTP_NOTIFY_INTERFACE_CONFIRMED:
3395 struct sctp_nets *net;
3397 net = (struct sctp_nets *)data;
3398 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_CONFIRMED,
3399 (struct sockaddr *)&net->ro._l_addr, error);
3402 case SCTP_NOTIFY_SPECIAL_SP_FAIL:
3403 sctp_notify_send_failed2(stcb, error,
3404 (struct sctp_stream_queue_pending *)data, so_locked);
3406 case SCTP_NOTIFY_DG_FAIL:
3407 sctp_notify_send_failed(stcb, error,
3408 (struct sctp_tmit_chunk *)data, so_locked);
3410 case SCTP_NOTIFY_PARTIAL_DELVIERY_INDICATION:
3414 val = *((uint32_t *) data);
3416 sctp_notify_partial_delivery_indication(stcb, error, val, so_locked);
3419 case SCTP_NOTIFY_STRDATA_ERR:
3421 case SCTP_NOTIFY_ASSOC_ABORTED:
3422 if ((stcb) && (((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_WAIT) ||
3423 ((stcb->asoc.state & SCTP_STATE_MASK) == SCTP_STATE_COOKIE_ECHOED))) {
3424 sctp_notify_assoc_change(SCTP_CANT_STR_ASSOC, stcb, error, so_locked);
3426 sctp_notify_assoc_change(SCTP_COMM_LOST, stcb, error, so_locked);
3429 case SCTP_NOTIFY_PEER_OPENED_STREAM:
3431 case SCTP_NOTIFY_STREAM_OPENED_OK:
3433 case SCTP_NOTIFY_ASSOC_RESTART:
3434 sctp_notify_assoc_change(SCTP_RESTART, stcb, error, so_locked);
3435 if (stcb->asoc.peer_supports_auth == 0) {
3436 sctp_ulp_notify(SCTP_NOTIFY_NO_PEER_AUTH, stcb, 0,
3440 case SCTP_NOTIFY_HB_RESP:
3442 case SCTP_NOTIFY_STR_RESET_INSTREAM_ADD_OK:
3443 sctp_notify_stream_reset_add(stcb, error, SCTP_STRRESET_INBOUND_STR);
3445 case SCTP_NOTIFY_STR_RESET_ADD_OK:
3446 sctp_notify_stream_reset_add(stcb, error, SCTP_STRRESET_OUTBOUND_STR);
3448 case SCTP_NOTIFY_STR_RESET_ADD_FAIL:
3449 sctp_notify_stream_reset_add(stcb, error, (SCTP_STRRESET_FAILED | SCTP_STRRESET_OUTBOUND_STR));
3452 case SCTP_NOTIFY_STR_RESET_SEND:
3453 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STRRESET_OUTBOUND_STR);
3455 case SCTP_NOTIFY_STR_RESET_RECV:
3456 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), SCTP_STRRESET_INBOUND_STR);
3458 case SCTP_NOTIFY_STR_RESET_FAILED_OUT:
3459 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STRRESET_OUTBOUND_STR | SCTP_STRRESET_FAILED));
3461 case SCTP_NOTIFY_STR_RESET_FAILED_IN:
3462 sctp_notify_stream_reset(stcb, error, ((uint16_t *) data), (SCTP_STRRESET_INBOUND_STR | SCTP_STRRESET_FAILED));
3464 case SCTP_NOTIFY_ASCONF_ADD_IP:
3465 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_ADDED, data,
3468 case SCTP_NOTIFY_ASCONF_DELETE_IP:
3469 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_REMOVED, data,
3472 case SCTP_NOTIFY_ASCONF_SET_PRIMARY:
3473 sctp_notify_peer_addr_change(stcb, SCTP_ADDR_MADE_PRIM, data,
3476 case SCTP_NOTIFY_ASCONF_SUCCESS:
3478 case SCTP_NOTIFY_ASCONF_FAILED:
3480 case SCTP_NOTIFY_PEER_SHUTDOWN:
3481 sctp_notify_shutdown_event(stcb);
3483 case SCTP_NOTIFY_AUTH_NEW_KEY:
3484 sctp_notify_authentication(stcb, SCTP_AUTH_NEWKEY, error,
3485 (uint16_t) (uintptr_t) data,
3488 case SCTP_NOTIFY_AUTH_FREE_KEY:
3489 sctp_notify_authentication(stcb, SCTP_AUTH_FREE_KEY, error,
3490 (uint16_t) (uintptr_t) data,
3493 case SCTP_NOTIFY_NO_PEER_AUTH:
3494 sctp_notify_authentication(stcb, SCTP_AUTH_NO_AUTH, error,
3495 (uint16_t) (uintptr_t) data,
3498 case SCTP_NOTIFY_SENDER_DRY:
3499 sctp_notify_sender_dry_event(stcb, so_locked);
3502 SCTPDBG(SCTP_DEBUG_UTIL1, "%s: unknown notification %xh (%u)\n",
3503 __FUNCTION__, notification, notification);
3509 sctp_report_all_outbound(struct sctp_tcb *stcb, int holds_lock, int so_locked
3510 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3515 struct sctp_association *asoc;
3516 struct sctp_stream_out *outs;
3517 struct sctp_tmit_chunk *chk, *nchk;
3518 struct sctp_stream_queue_pending *sp, *nsp;
3525 if (asoc->state & SCTP_STATE_ABOUT_TO_BE_FREED) {
3526 /* already being freed */
3529 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3530 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3531 (asoc->state & SCTP_STATE_CLOSED_SOCKET)) {
3534 /* now through all the gunk freeing chunks */
3535 if (holds_lock == 0) {
3536 SCTP_TCB_SEND_LOCK(stcb);
3538 /* sent queue SHOULD be empty */
3539 TAILQ_FOREACH_SAFE(chk, &asoc->sent_queue, sctp_next, nchk) {
3540 TAILQ_REMOVE(&asoc->sent_queue, chk, sctp_next);
3541 asoc->sent_queue_cnt--;
3542 if (chk->data != NULL) {
3543 sctp_free_bufspace(stcb, asoc, chk, 1);
3544 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
3545 SCTP_NOTIFY_DATAGRAM_SENT, chk, so_locked);
3547 sctp_m_freem(chk->data);
3551 sctp_free_a_chunk(stcb, chk, so_locked);
3552 /* sa_ignore FREED_MEMORY */
3554 /* pending send queue SHOULD be empty */
3555 TAILQ_FOREACH_SAFE(chk, &asoc->send_queue, sctp_next, nchk) {
3556 TAILQ_REMOVE(&asoc->send_queue, chk, sctp_next);
3557 asoc->send_queue_cnt--;
3558 if (chk->data != NULL) {
3559 sctp_free_bufspace(stcb, asoc, chk, 1);
3560 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb,
3561 SCTP_NOTIFY_DATAGRAM_UNSENT, chk, so_locked);
3563 sctp_m_freem(chk->data);
3567 sctp_free_a_chunk(stcb, chk, so_locked);
3568 /* sa_ignore FREED_MEMORY */
3570 for (i = 0; i < asoc->streamoutcnt; i++) {
3571 /* For each stream */
3572 outs = &asoc->strmout[i];
3573 /* clean up any sends there */
3574 asoc->locked_on_sending = NULL;
3575 TAILQ_FOREACH_SAFE(sp, &outs->outqueue, next, nsp) {
3576 asoc->stream_queue_cnt--;
3577 TAILQ_REMOVE(&outs->outqueue, sp, next);
3578 sctp_free_spbufspace(stcb, asoc, sp);
3580 sctp_ulp_notify(SCTP_NOTIFY_SPECIAL_SP_FAIL, stcb,
3581 SCTP_NOTIFY_DATAGRAM_UNSENT, (void *)sp, so_locked);
3583 sctp_m_freem(sp->data);
3588 sctp_free_remote_addr(sp->net);
3591 /* Free the chunk */
3592 sctp_free_a_strmoq(stcb, sp, so_locked);
3593 /* sa_ignore FREED_MEMORY */
3597 if (holds_lock == 0) {
3598 SCTP_TCB_SEND_UNLOCK(stcb);
3603 sctp_abort_notification(struct sctp_tcb *stcb, int error, int so_locked
3604 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3612 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL) ||
3613 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) &&
3614 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_CONNECTED))) {
3615 stcb->sctp_ep->sctp_flags |= SCTP_PCB_FLAGS_WAS_ABORTED;
3617 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
3618 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE) ||
3619 (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET)) {
3622 /* Tell them we lost the asoc */
3623 sctp_report_all_outbound(stcb, 1, so_locked);
3624 sctp_ulp_notify(SCTP_NOTIFY_ASSOC_ABORTED, stcb, error, NULL, so_locked);
3628 sctp_abort_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3629 struct mbuf *m, int iphlen, struct sctphdr *sh, struct mbuf *op_err,
3630 uint32_t vrf_id, uint16_t port)
3634 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3641 /* We have a TCB to abort, send notification too */
3642 vtag = stcb->asoc.peer_vtag;
3643 sctp_abort_notification(stcb, 0, SCTP_SO_NOT_LOCKED);
3644 /* get the assoc vrf id and table id */
3645 vrf_id = stcb->asoc.vrf_id;
3646 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3648 sctp_send_abort(m, iphlen, sh, vtag, op_err, vrf_id, port);
3650 /* Ok, now lets free it */
3651 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3652 so = SCTP_INP_SO(inp);
3653 atomic_add_int(&stcb->asoc.refcnt, 1);
3654 SCTP_TCB_UNLOCK(stcb);
3655 SCTP_SOCKET_LOCK(so, 1);
3656 SCTP_TCB_LOCK(stcb);
3657 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3659 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3660 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3661 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3662 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3664 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_4);
3665 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3666 SCTP_SOCKET_UNLOCK(so, 1);
3671 #ifdef SCTP_ASOCLOG_OF_TSNS
3673 sctp_print_out_track_log(struct sctp_tcb *stcb)
3678 SCTP_PRINTF("Last ep reason:%x\n", stcb->sctp_ep->last_abort_code);
3679 SCTP_PRINTF("IN bound TSN log-aaa\n");
3680 if ((stcb->asoc.tsn_in_at == 0) && (stcb->asoc.tsn_in_wrapped == 0)) {
3681 SCTP_PRINTF("None rcvd\n");
3684 if (stcb->asoc.tsn_in_wrapped) {
3685 for (i = stcb->asoc.tsn_in_at; i < SCTP_TSN_LOG_SIZE; i++) {
3686 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3687 stcb->asoc.in_tsnlog[i].tsn,
3688 stcb->asoc.in_tsnlog[i].strm,
3689 stcb->asoc.in_tsnlog[i].seq,
3690 stcb->asoc.in_tsnlog[i].flgs,
3691 stcb->asoc.in_tsnlog[i].sz);
3694 if (stcb->asoc.tsn_in_at) {
3695 for (i = 0; i < stcb->asoc.tsn_in_at; i++) {
3696 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3697 stcb->asoc.in_tsnlog[i].tsn,
3698 stcb->asoc.in_tsnlog[i].strm,
3699 stcb->asoc.in_tsnlog[i].seq,
3700 stcb->asoc.in_tsnlog[i].flgs,
3701 stcb->asoc.in_tsnlog[i].sz);
3705 SCTP_PRINTF("OUT bound TSN log-aaa\n");
3706 if ((stcb->asoc.tsn_out_at == 0) &&
3707 (stcb->asoc.tsn_out_wrapped == 0)) {
3708 SCTP_PRINTF("None sent\n");
3710 if (stcb->asoc.tsn_out_wrapped) {
3711 for (i = stcb->asoc.tsn_out_at; i < SCTP_TSN_LOG_SIZE; i++) {
3712 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3713 stcb->asoc.out_tsnlog[i].tsn,
3714 stcb->asoc.out_tsnlog[i].strm,
3715 stcb->asoc.out_tsnlog[i].seq,
3716 stcb->asoc.out_tsnlog[i].flgs,
3717 stcb->asoc.out_tsnlog[i].sz);
3720 if (stcb->asoc.tsn_out_at) {
3721 for (i = 0; i < stcb->asoc.tsn_out_at; i++) {
3722 SCTP_PRINTF("TSN:%x strm:%d seq:%d flags:%x sz:%d\n",
3723 stcb->asoc.out_tsnlog[i].tsn,
3724 stcb->asoc.out_tsnlog[i].strm,
3725 stcb->asoc.out_tsnlog[i].seq,
3726 stcb->asoc.out_tsnlog[i].flgs,
3727 stcb->asoc.out_tsnlog[i].sz);
3736 sctp_abort_an_association(struct sctp_inpcb *inp, struct sctp_tcb *stcb,
3737 int error, struct mbuf *op_err,
3739 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
3744 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3749 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3750 so = SCTP_INP_SO(inp);
3753 /* Got to have a TCB */
3754 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
3755 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) {
3756 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
3757 SCTP_CALLED_DIRECTLY_NOCMPSET);
3762 stcb->asoc.state |= SCTP_STATE_WAS_ABORTED;
3764 /* notify the ulp */
3765 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) == 0)
3766 sctp_abort_notification(stcb, error, so_locked);
3767 /* notify the peer */
3768 #if defined(SCTP_PANIC_ON_ABORT)
3769 panic("aborting an association");
3771 sctp_send_abort_tcb(stcb, op_err, so_locked);
3772 SCTP_STAT_INCR_COUNTER32(sctps_aborted);
3773 if ((SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_OPEN) ||
3774 (SCTP_GET_STATE(&stcb->asoc) == SCTP_STATE_SHUTDOWN_RECEIVED)) {
3775 SCTP_STAT_DECR_GAUGE32(sctps_currestab);
3777 /* now free the asoc */
3778 #ifdef SCTP_ASOCLOG_OF_TSNS
3779 sctp_print_out_track_log(stcb);
3781 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3783 atomic_add_int(&stcb->asoc.refcnt, 1);
3784 SCTP_TCB_UNLOCK(stcb);
3785 SCTP_SOCKET_LOCK(so, 1);
3786 SCTP_TCB_LOCK(stcb);
3787 atomic_subtract_int(&stcb->asoc.refcnt, 1);
3790 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTPUTIL + SCTP_LOC_5);
3791 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
3793 SCTP_SOCKET_UNLOCK(so, 1);
3799 sctp_handle_ootb(struct mbuf *m, int iphlen, int offset, struct sctphdr *sh,
3800 struct sctp_inpcb *inp, struct mbuf *op_err, uint32_t vrf_id, uint16_t port)
3802 struct sctp_chunkhdr *ch, chunk_buf;
3803 unsigned int chk_length;
3804 int contains_init_chunk;
3806 SCTP_STAT_INCR_COUNTER32(sctps_outoftheblue);
3807 /* Generate a TO address for future reference */
3808 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)) {
3809 if (LIST_FIRST(&inp->sctp_asoc_list) == NULL) {
3810 sctp_inpcb_free(inp, SCTP_FREE_SHOULD_USE_ABORT,
3811 SCTP_CALLED_DIRECTLY_NOCMPSET);
3814 contains_init_chunk = 0;
3815 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
3816 sizeof(*ch), (uint8_t *) & chunk_buf);
3817 while (ch != NULL) {
3818 chk_length = ntohs(ch->chunk_length);
3819 if (chk_length < sizeof(*ch)) {
3820 /* break to abort land */
3823 switch (ch->chunk_type) {
3825 contains_init_chunk = 1;
3827 case SCTP_COOKIE_ECHO:
3828 /* We hit here only if the assoc is being freed */
3830 case SCTP_PACKET_DROPPED:
3831 /* we don't respond to pkt-dropped */
3833 case SCTP_ABORT_ASSOCIATION:
3834 /* we don't respond with an ABORT to an ABORT */
3836 case SCTP_SHUTDOWN_COMPLETE:
3838 * we ignore it since we are not waiting for it and
3842 case SCTP_SHUTDOWN_ACK:
3843 sctp_send_shutdown_complete2(m, sh, vrf_id, port);
3848 offset += SCTP_SIZE32(chk_length);
3849 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
3850 sizeof(*ch), (uint8_t *) & chunk_buf);
3852 if ((SCTP_BASE_SYSCTL(sctp_blackhole) == 0) ||
3853 ((SCTP_BASE_SYSCTL(sctp_blackhole) == 1) &&
3854 (contains_init_chunk == 0))) {
3855 sctp_send_abort(m, iphlen, sh, 0, op_err, vrf_id, port);
3860 * check the inbound datagram to make sure there is not an abort inside it,
3861 * if there is return 1, else return 0.
3864 sctp_is_there_an_abort_here(struct mbuf *m, int iphlen, uint32_t * vtagfill)
3866 struct sctp_chunkhdr *ch;
3867 struct sctp_init_chunk *init_chk, chunk_buf;
3869 unsigned int chk_length;
3871 offset = iphlen + sizeof(struct sctphdr);
3872 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset, sizeof(*ch),
3873 (uint8_t *) & chunk_buf);
3874 while (ch != NULL) {
3875 chk_length = ntohs(ch->chunk_length);
3876 if (chk_length < sizeof(*ch)) {
3877 /* packet is probably corrupt */
3880 /* we seem to be ok, is it an abort? */
3881 if (ch->chunk_type == SCTP_ABORT_ASSOCIATION) {
3882 /* yep, tell them */
3885 if (ch->chunk_type == SCTP_INITIATION) {
3886 /* need to update the Vtag */
3887 init_chk = (struct sctp_init_chunk *)sctp_m_getptr(m,
3888 offset, sizeof(*init_chk), (uint8_t *) & chunk_buf);
3889 if (init_chk != NULL) {
3890 *vtagfill = ntohl(init_chk->init.initiate_tag);
3893 /* Nope, move to the next chunk */
3894 offset += SCTP_SIZE32(chk_length);
3895 ch = (struct sctp_chunkhdr *)sctp_m_getptr(m, offset,
3896 sizeof(*ch), (uint8_t *) & chunk_buf);
3902 * currently (2/02), ifa_addr embeds scope_id's and don't have sin6_scope_id
3903 * set (i.e. it's 0) so, create this function to compare link local scopes
3907 sctp_is_same_scope(struct sockaddr_in6 *addr1, struct sockaddr_in6 *addr2)
3909 struct sockaddr_in6 a, b;
3915 if (a.sin6_scope_id == 0)
3916 if (sa6_recoverscope(&a)) {
3917 /* can't get scope, so can't match */
3920 if (b.sin6_scope_id == 0)
3921 if (sa6_recoverscope(&b)) {
3922 /* can't get scope, so can't match */
3925 if (a.sin6_scope_id != b.sin6_scope_id)
3932 * returns a sockaddr_in6 with embedded scope recovered and removed
3934 struct sockaddr_in6 *
3935 sctp_recover_scope(struct sockaddr_in6 *addr, struct sockaddr_in6 *store)
3937 /* check and strip embedded scope junk */
3938 if (addr->sin6_family == AF_INET6) {
3939 if (IN6_IS_SCOPE_LINKLOCAL(&addr->sin6_addr)) {
3940 if (addr->sin6_scope_id == 0) {
3942 if (!sa6_recoverscope(store)) {
3943 /* use the recovered scope */
3947 /* else, return the original "to" addr */
3948 in6_clearscope(&addr->sin6_addr);
3958 * are the two addresses the same? currently a "scopeless" check returns: 1
3962 sctp_cmpaddr(struct sockaddr *sa1, struct sockaddr *sa2)
3966 if (sa1 == NULL || sa2 == NULL)
3969 /* must be the same family */
3970 if (sa1->sa_family != sa2->sa_family)
3973 switch (sa1->sa_family) {
3977 /* IPv6 addresses */
3978 struct sockaddr_in6 *sin6_1, *sin6_2;
3980 sin6_1 = (struct sockaddr_in6 *)sa1;
3981 sin6_2 = (struct sockaddr_in6 *)sa2;
3982 return (SCTP6_ARE_ADDR_EQUAL(sin6_1,
3989 /* IPv4 addresses */
3990 struct sockaddr_in *sin_1, *sin_2;
3992 sin_1 = (struct sockaddr_in *)sa1;
3993 sin_2 = (struct sockaddr_in *)sa2;
3994 return (sin_1->sin_addr.s_addr == sin_2->sin_addr.s_addr);
3998 /* we don't do these... */
4004 sctp_print_address(struct sockaddr *sa)
4007 char ip6buf[INET6_ADDRSTRLEN];
4012 switch (sa->sa_family) {
4016 struct sockaddr_in6 *sin6;
4018 sin6 = (struct sockaddr_in6 *)sa;
4019 SCTP_PRINTF("IPv6 address: %s:port:%d scope:%u\n",
4020 ip6_sprintf(ip6buf, &sin6->sin6_addr),
4021 ntohs(sin6->sin6_port),
4022 sin6->sin6_scope_id);
4029 struct sockaddr_in *sin;
4032 sin = (struct sockaddr_in *)sa;
4033 p = (unsigned char *)&sin->sin_addr;
4034 SCTP_PRINTF("IPv4 address: %u.%u.%u.%u:%d\n",
4035 p[0], p[1], p[2], p[3], ntohs(sin->sin_port));
4046 sctp_print_address_pkt(struct ip *iph, struct sctphdr *sh)
4048 switch (iph->ip_v) {
4052 struct sockaddr_in lsa, fsa;
4054 bzero(&lsa, sizeof(lsa));
4055 lsa.sin_len = sizeof(lsa);
4056 lsa.sin_family = AF_INET;
4057 lsa.sin_addr = iph->ip_src;
4058 lsa.sin_port = sh->src_port;
4059 bzero(&fsa, sizeof(fsa));
4060 fsa.sin_len = sizeof(fsa);
4061 fsa.sin_family = AF_INET;
4062 fsa.sin_addr = iph->ip_dst;
4063 fsa.sin_port = sh->dest_port;
4064 SCTP_PRINTF("src: ");
4065 sctp_print_address((struct sockaddr *)&lsa);
4066 SCTP_PRINTF("dest: ");
4067 sctp_print_address((struct sockaddr *)&fsa);
4072 case IPV6_VERSION >> 4:
4074 struct ip6_hdr *ip6;
4075 struct sockaddr_in6 lsa6, fsa6;
4077 ip6 = (struct ip6_hdr *)iph;
4078 bzero(&lsa6, sizeof(lsa6));
4079 lsa6.sin6_len = sizeof(lsa6);
4080 lsa6.sin6_family = AF_INET6;
4081 lsa6.sin6_addr = ip6->ip6_src;
4082 lsa6.sin6_port = sh->src_port;
4083 bzero(&fsa6, sizeof(fsa6));
4084 fsa6.sin6_len = sizeof(fsa6);
4085 fsa6.sin6_family = AF_INET6;
4086 fsa6.sin6_addr = ip6->ip6_dst;
4087 fsa6.sin6_port = sh->dest_port;
4088 SCTP_PRINTF("src: ");
4089 sctp_print_address((struct sockaddr *)&lsa6);
4090 SCTP_PRINTF("dest: ");
4091 sctp_print_address((struct sockaddr *)&fsa6);
4102 sctp_pull_off_control_to_new_inp(struct sctp_inpcb *old_inp,
4103 struct sctp_inpcb *new_inp,
4104 struct sctp_tcb *stcb,
4108 * go through our old INP and pull off any control structures that
4109 * belong to stcb and move then to the new inp.
4111 struct socket *old_so, *new_so;
4112 struct sctp_queued_to_read *control, *nctl;
4113 struct sctp_readhead tmp_queue;
4117 old_so = old_inp->sctp_socket;
4118 new_so = new_inp->sctp_socket;
4119 TAILQ_INIT(&tmp_queue);
4120 error = sblock(&old_so->so_rcv, waitflags);
4123 * Gak, can't get sblock, we have a problem. data will be
4124 * left stranded.. and we don't dare look at it since the
4125 * other thread may be reading something. Oh well, its a
4126 * screwed up app that does a peeloff OR a accept while
4127 * reading from the main socket... actually its only the
4128 * peeloff() case, since I think read will fail on a
4129 * listening socket..
4133 /* lock the socket buffers */
4134 SCTP_INP_READ_LOCK(old_inp);
4135 TAILQ_FOREACH_SAFE(control, &old_inp->read_queue, next, nctl) {
4136 /* Pull off all for out target stcb */
4137 if (control->stcb == stcb) {
4138 /* remove it we want it */
4139 TAILQ_REMOVE(&old_inp->read_queue, control, next);
4140 TAILQ_INSERT_TAIL(&tmp_queue, control, next);
4143 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4144 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
4146 sctp_sbfree(control, stcb, &old_so->so_rcv, m);
4147 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4148 sctp_sblog(&old_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4150 m = SCTP_BUF_NEXT(m);
4154 SCTP_INP_READ_UNLOCK(old_inp);
4155 /* Remove the sb-lock on the old socket */
4157 sbunlock(&old_so->so_rcv);
4158 /* Now we move them over to the new socket buffer */
4159 SCTP_INP_READ_LOCK(new_inp);
4160 TAILQ_FOREACH_SAFE(control, &tmp_queue, next, nctl) {
4161 TAILQ_INSERT_TAIL(&new_inp->read_queue, control, next);
4164 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4165 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4167 sctp_sballoc(stcb, &new_so->so_rcv, m);
4168 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4169 sctp_sblog(&new_so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4171 m = SCTP_BUF_NEXT(m);
4174 SCTP_INP_READ_UNLOCK(new_inp);
4178 sctp_add_to_readq(struct sctp_inpcb *inp,
4179 struct sctp_tcb *stcb,
4180 struct sctp_queued_to_read *control,
4183 int inp_read_lock_held,
4185 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4191 * Here we must place the control on the end of the socket read
4192 * queue AND increment sb_cc so that select will work properly on
4195 struct mbuf *m, *prev = NULL;
4200 panic("Gak, inp NULL on add_to_readq");
4204 if (inp_read_lock_held == 0)
4205 SCTP_INP_READ_LOCK(inp);
4206 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ) {
4207 sctp_free_remote_addr(control->whoFrom);
4208 if (control->data) {
4209 sctp_m_freem(control->data);
4210 control->data = NULL;
4212 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4213 if (inp_read_lock_held == 0)
4214 SCTP_INP_READ_UNLOCK(inp);
4217 if (!(control->spec_flags & M_NOTIFICATION)) {
4218 atomic_add_int(&inp->total_recvs, 1);
4219 if (!control->do_not_ref_stcb) {
4220 atomic_add_int(&stcb->total_recvs, 1);
4224 control->held_length = 0;
4225 control->length = 0;
4227 if (SCTP_BUF_LEN(m) == 0) {
4228 /* Skip mbufs with NO length */
4231 control->data = sctp_m_free(m);
4234 SCTP_BUF_NEXT(prev) = sctp_m_free(m);
4235 m = SCTP_BUF_NEXT(prev);
4238 control->tail_mbuf = prev;
4243 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4244 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(m));
4246 sctp_sballoc(stcb, sb, m);
4247 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4248 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4250 atomic_add_int(&control->length, SCTP_BUF_LEN(m));
4251 m = SCTP_BUF_NEXT(m);
4254 control->tail_mbuf = prev;
4256 /* Everything got collapsed out?? */
4257 sctp_free_remote_addr(control->whoFrom);
4258 SCTP_ZONE_FREE(SCTP_BASE_INFO(ipi_zone_readq), control);
4259 if (inp_read_lock_held == 0)
4260 SCTP_INP_READ_UNLOCK(inp);
4264 control->end_added = 1;
4266 TAILQ_INSERT_TAIL(&inp->read_queue, control, next);
4267 if (inp_read_lock_held == 0)
4268 SCTP_INP_READ_UNLOCK(inp);
4269 if (inp && inp->sctp_socket) {
4270 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4271 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4273 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4276 so = SCTP_INP_SO(inp);
4279 atomic_add_int(&stcb->asoc.refcnt, 1);
4280 SCTP_TCB_UNLOCK(stcb);
4282 SCTP_SOCKET_LOCK(so, 1);
4284 SCTP_TCB_LOCK(stcb);
4285 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4287 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4288 SCTP_SOCKET_UNLOCK(so, 1);
4293 sctp_sorwakeup(inp, inp->sctp_socket);
4294 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4296 SCTP_SOCKET_UNLOCK(so, 1);
4305 sctp_append_to_readq(struct sctp_inpcb *inp,
4306 struct sctp_tcb *stcb,
4307 struct sctp_queued_to_read *control,
4314 * A partial delivery API event is underway. OR we are appending on
4315 * the reassembly queue.
4317 * If PDAPI this means we need to add m to the end of the data.
4318 * Increase the length in the control AND increment the sb_cc.
4319 * Otherwise sb is NULL and all we need to do is put it at the end
4320 * of the mbuf chain.
4323 struct mbuf *mm, *tail = NULL, *prev = NULL;
4326 SCTP_INP_READ_LOCK(inp);
4328 if (control == NULL) {
4331 SCTP_INP_READ_UNLOCK(inp);
4335 if (inp && (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_CANT_READ)) {
4336 SCTP_INP_READ_UNLOCK(inp);
4339 if (control->end_added) {
4340 /* huh this one is complete? */
4348 if (SCTP_BUF_LEN(mm) == 0) {
4349 /* Skip mbufs with NO lenght */
4352 m = sctp_m_free(mm);
4355 SCTP_BUF_NEXT(prev) = sctp_m_free(mm);
4356 mm = SCTP_BUF_NEXT(prev);
4361 len += SCTP_BUF_LEN(mm);
4363 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4364 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBALLOC, SCTP_BUF_LEN(mm));
4366 sctp_sballoc(stcb, sb, mm);
4367 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
4368 sctp_sblog(sb, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
4371 mm = SCTP_BUF_NEXT(mm);
4376 /* Really there should always be a prev */
4378 /* Huh nothing left? */
4380 panic("Nothing left to add?");
4387 if (control->tail_mbuf) {
4389 SCTP_BUF_NEXT(control->tail_mbuf) = m;
4390 control->tail_mbuf = tail;
4394 if (control->data != NULL) {
4395 panic("This should NOT happen");
4399 control->tail_mbuf = tail;
4401 atomic_add_int(&control->length, len);
4403 /* message is complete */
4404 if (stcb && (control == stcb->asoc.control_pdapi)) {
4405 stcb->asoc.control_pdapi = NULL;
4407 control->held_length = 0;
4408 control->end_added = 1;
4411 control->do_not_ref_stcb = 1;
4414 * When we are appending in partial delivery, the cum-ack is used
4415 * for the actual pd-api highest tsn on this mbuf. The true cum-ack
4416 * is populated in the outbound sinfo structure from the true cumack
4417 * if the association exists...
4419 control->sinfo_tsn = control->sinfo_cumtsn = ctls_cumack;
4421 SCTP_INP_READ_UNLOCK(inp);
4423 if (inp && inp->sctp_socket) {
4424 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_ZERO_COPY_ACTIVE)) {
4425 SCTP_ZERO_COPY_EVENT(inp, inp->sctp_socket);
4427 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4430 so = SCTP_INP_SO(inp);
4432 atomic_add_int(&stcb->asoc.refcnt, 1);
4433 SCTP_TCB_UNLOCK(stcb);
4435 SCTP_SOCKET_LOCK(so, 1);
4437 SCTP_TCB_LOCK(stcb);
4438 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4440 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
4441 SCTP_SOCKET_UNLOCK(so, 1);
4445 sctp_sorwakeup(inp, inp->sctp_socket);
4446 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4447 SCTP_SOCKET_UNLOCK(so, 1);
4456 /*************HOLD THIS COMMENT FOR PATCH FILE OF
4457 *************ALTERNATE ROUTING CODE
4460 /*************HOLD THIS COMMENT FOR END OF PATCH FILE OF
4461 *************ALTERNATE ROUTING CODE
4465 sctp_generate_invmanparam(int err)
4467 /* Return a MBUF with a invalid mandatory parameter */
4470 m = sctp_get_mbuf_for_msg(sizeof(struct sctp_paramhdr), 0, M_DONTWAIT, 1, MT_DATA);
4472 struct sctp_paramhdr *ph;
4474 SCTP_BUF_LEN(m) = sizeof(struct sctp_paramhdr);
4475 ph = mtod(m, struct sctp_paramhdr *);
4476 ph->param_length = htons(sizeof(struct sctp_paramhdr));
4477 ph->param_type = htons(err);
4482 #ifdef SCTP_MBCNT_LOGGING
4484 sctp_free_bufspace(struct sctp_tcb *stcb, struct sctp_association *asoc,
4485 struct sctp_tmit_chunk *tp1, int chk_cnt)
4487 if (tp1->data == NULL) {
4490 asoc->chunks_on_out_queue -= chk_cnt;
4491 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBCNT_LOGGING_ENABLE) {
4492 sctp_log_mbcnt(SCTP_LOG_MBCNT_DECREASE,
4493 asoc->total_output_queue_size,
4498 if (asoc->total_output_queue_size >= tp1->book_size) {
4499 atomic_add_int(&asoc->total_output_queue_size, -tp1->book_size);
4501 asoc->total_output_queue_size = 0;
4504 if (stcb->sctp_socket && (((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) ||
4505 ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE)))) {
4506 if (stcb->sctp_socket->so_snd.sb_cc >= tp1->book_size) {
4507 stcb->sctp_socket->so_snd.sb_cc -= tp1->book_size;
4509 stcb->sctp_socket->so_snd.sb_cc = 0;
4518 sctp_release_pr_sctp_chunk(struct sctp_tcb *stcb, struct sctp_tmit_chunk *tp1,
4519 int reason, int so_locked
4520 #if !defined(__APPLE__) && !defined(SCTP_SO_LOCK_TESTING)
4525 struct sctp_stream_out *strq;
4526 struct sctp_tmit_chunk *chk = NULL, *tp2;
4527 struct sctp_stream_queue_pending *sp;
4528 uint16_t stream = 0, seq = 0;
4529 uint8_t foundeom = 0;
4532 int do_wakeup_routine = 0;
4534 stream = tp1->rec.data.stream_number;
4535 seq = tp1->rec.data.stream_seq;
4537 ret_sz += tp1->book_size;
4538 if (tp1->data != NULL) {
4539 if (tp1->sent < SCTP_DATAGRAM_RESEND) {
4540 sctp_flight_size_decrease(tp1);
4541 sctp_total_flight_decrease(stcb, tp1);
4543 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4544 stcb->asoc.peers_rwnd += tp1->send_size;
4545 stcb->asoc.peers_rwnd += SCTP_BASE_SYSCTL(sctp_peer_chunk_oh);
4546 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb, reason, tp1, so_locked);
4548 sctp_m_freem(tp1->data);
4551 do_wakeup_routine = 1;
4552 if (PR_SCTP_BUF_ENABLED(tp1->flags)) {
4553 stcb->asoc.sent_queue_cnt_removeable--;
4556 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4557 if ((tp1->rec.data.rcv_flags & SCTP_DATA_NOT_FRAG) ==
4558 SCTP_DATA_NOT_FRAG) {
4559 /* not frag'ed we ae done */
4562 } else if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4563 /* end of frag, we are done */
4568 * Its a begin or middle piece, we must mark all of
4572 tp1 = TAILQ_NEXT(tp1, sctp_next);
4574 } while (tp1 && notdone);
4575 if (foundeom == 0) {
4577 * The multi-part message was scattered across the send and
4580 TAILQ_FOREACH_SAFE(tp1, &stcb->asoc.send_queue, sctp_next, tp2) {
4581 if ((tp1->rec.data.stream_number != stream) ||
4582 (tp1->rec.data.stream_seq != seq)) {
4586 * save to chk in case we have some on stream out
4587 * queue. If so and we have an un-transmitted one we
4588 * don't have to fudge the TSN.
4591 ret_sz += tp1->book_size;
4592 sctp_free_bufspace(stcb, &stcb->asoc, tp1, 1);
4593 sctp_ulp_notify(SCTP_NOTIFY_DG_FAIL, stcb, reason, tp1, so_locked);
4595 sctp_m_freem(tp1->data);
4598 /* No flight involved here book the size to 0 */
4600 if (tp1->rec.data.rcv_flags & SCTP_DATA_LAST_FRAG) {
4603 do_wakeup_routine = 1;
4604 tp1->sent = SCTP_FORWARD_TSN_SKIP;
4605 TAILQ_REMOVE(&stcb->asoc.send_queue, tp1, sctp_next);
4607 * on to the sent queue so we can wait for it to be
4610 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, tp1,
4612 stcb->asoc.send_queue_cnt--;
4613 stcb->asoc.sent_queue_cnt++;
4616 if (foundeom == 0) {
4618 * Still no eom found. That means there is stuff left on the
4619 * stream out queue.. yuck.
4621 strq = &stcb->asoc.strmout[stream];
4622 SCTP_TCB_SEND_LOCK(stcb);
4623 TAILQ_FOREACH(sp, &strq->outqueue, next) {
4624 /* FIXME: Shouldn't this be a serial number check? */
4625 if (sp->strseq > seq) {
4628 /* Check if its our SEQ */
4629 if (sp->strseq == seq) {
4630 sp->discard_rest = 1;
4632 * We may need to put a chunk on the queue
4633 * that holds the TSN that would have been
4634 * sent with the LAST bit.
4637 /* Yep, we have to */
4638 sctp_alloc_a_chunk(stcb, chk);
4641 * we are hosed. All we can
4642 * do is nothing.. which
4643 * will cause an abort if
4644 * the peer is paying
4649 memset(chk, 0, sizeof(*chk));
4650 chk->rec.data.rcv_flags = SCTP_DATA_LAST_FRAG;
4651 chk->sent = SCTP_FORWARD_TSN_SKIP;
4652 chk->asoc = &stcb->asoc;
4653 chk->rec.data.stream_seq = sp->strseq;
4654 chk->rec.data.stream_number = sp->stream;
4655 chk->rec.data.payloadtype = sp->ppid;
4656 chk->rec.data.context = sp->context;
4657 chk->flags = sp->act_flags;
4659 chk->whoTo = sp->net;
4661 chk->whoTo = stcb->asoc.primary_destination;
4662 atomic_add_int(&chk->whoTo->ref_count, 1);
4663 chk->rec.data.TSN_seq = atomic_fetchadd_int(&stcb->asoc.sending_seq, 1);
4664 stcb->asoc.pr_sctp_cnt++;
4665 chk->pr_sctp_on = 1;
4666 TAILQ_INSERT_TAIL(&stcb->asoc.sent_queue, chk, sctp_next);
4667 stcb->asoc.sent_queue_cnt++;
4668 stcb->asoc.pr_sctp_cnt++;
4670 chk->rec.data.rcv_flags |= SCTP_DATA_LAST_FRAG;
4675 * Pull any data to free up the SB
4676 * and allow sender to "add more"
4677 * whilc we will throw away :-)
4679 sctp_free_spbufspace(stcb, &stcb->asoc,
4681 ret_sz += sp->length;
4682 do_wakeup_routine = 1;
4684 sctp_m_freem(sp->data);
4687 sp->tail_mbuf = NULL;
4691 } /* End tailq_foreach */
4692 SCTP_TCB_SEND_UNLOCK(stcb);
4694 if (do_wakeup_routine) {
4695 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4698 so = SCTP_INP_SO(stcb->sctp_ep);
4700 atomic_add_int(&stcb->asoc.refcnt, 1);
4701 SCTP_TCB_UNLOCK(stcb);
4702 SCTP_SOCKET_LOCK(so, 1);
4703 SCTP_TCB_LOCK(stcb);
4704 atomic_subtract_int(&stcb->asoc.refcnt, 1);
4705 if (stcb->asoc.state & SCTP_STATE_CLOSED_SOCKET) {
4706 /* assoc was freed while we were unlocked */
4707 SCTP_SOCKET_UNLOCK(so, 1);
4712 sctp_sowwakeup(stcb->sctp_ep, stcb->sctp_socket);
4713 #if defined (__APPLE__) || defined(SCTP_SO_LOCK_TESTING)
4715 SCTP_SOCKET_UNLOCK(so, 1);
4723 * checks to see if the given address, sa, is one that is currently known by
4724 * the kernel note: can't distinguish the same address on multiple interfaces
4725 * and doesn't handle multiple addresses with different zone/scope id's note:
4726 * ifa_ifwithaddr() compares the entire sockaddr struct
4729 sctp_find_ifa_in_ep(struct sctp_inpcb *inp, struct sockaddr *addr,
4732 struct sctp_laddr *laddr;
4734 if (holds_lock == 0) {
4735 SCTP_INP_RLOCK(inp);
4737 LIST_FOREACH(laddr, &inp->sctp_addr_list, sctp_nxt_addr) {
4738 if (laddr->ifa == NULL)
4740 if (addr->sa_family != laddr->ifa->address.sa.sa_family)
4743 if (addr->sa_family == AF_INET) {
4744 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4745 laddr->ifa->address.sin.sin_addr.s_addr) {
4747 if (holds_lock == 0) {
4748 SCTP_INP_RUNLOCK(inp);
4750 return (laddr->ifa);
4756 if (addr->sa_family == AF_INET6) {
4757 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4758 &laddr->ifa->address.sin6)) {
4760 if (holds_lock == 0) {
4761 SCTP_INP_RUNLOCK(inp);
4763 return (laddr->ifa);
4769 if (holds_lock == 0) {
4770 SCTP_INP_RUNLOCK(inp);
4776 sctp_get_ifa_hash_val(struct sockaddr *addr)
4778 switch (addr->sa_family) {
4782 struct sockaddr_in *sin;
4784 sin = (struct sockaddr_in *)addr;
4785 return (sin->sin_addr.s_addr ^ (sin->sin_addr.s_addr >> 16));
4791 struct sockaddr_in6 *sin6;
4792 uint32_t hash_of_addr;
4794 sin6 = (struct sockaddr_in6 *)addr;
4795 hash_of_addr = (sin6->sin6_addr.s6_addr32[0] +
4796 sin6->sin6_addr.s6_addr32[1] +
4797 sin6->sin6_addr.s6_addr32[2] +
4798 sin6->sin6_addr.s6_addr32[3]);
4799 hash_of_addr = (hash_of_addr ^ (hash_of_addr >> 16));
4800 return (hash_of_addr);
4810 sctp_find_ifa_by_addr(struct sockaddr *addr, uint32_t vrf_id, int holds_lock)
4812 struct sctp_ifa *sctp_ifap;
4813 struct sctp_vrf *vrf;
4814 struct sctp_ifalist *hash_head;
4815 uint32_t hash_of_addr;
4817 if (holds_lock == 0)
4818 SCTP_IPI_ADDR_RLOCK();
4820 vrf = sctp_find_vrf(vrf_id);
4823 if (holds_lock == 0)
4824 SCTP_IPI_ADDR_RUNLOCK();
4827 hash_of_addr = sctp_get_ifa_hash_val(addr);
4829 hash_head = &vrf->vrf_addr_hash[(hash_of_addr & vrf->vrf_addr_hashmark)];
4830 if (hash_head == NULL) {
4831 SCTP_PRINTF("hash_of_addr:%x mask:%x table:%x - ",
4832 hash_of_addr, (uint32_t) vrf->vrf_addr_hashmark,
4833 (uint32_t) (hash_of_addr & vrf->vrf_addr_hashmark));
4834 sctp_print_address(addr);
4835 SCTP_PRINTF("No such bucket for address\n");
4836 if (holds_lock == 0)
4837 SCTP_IPI_ADDR_RUNLOCK();
4841 LIST_FOREACH(sctp_ifap, hash_head, next_bucket) {
4842 if (sctp_ifap == NULL) {
4844 panic("Huh LIST_FOREACH corrupt");
4847 SCTP_PRINTF("LIST corrupt of sctp_ifap's?\n");
4851 if (addr->sa_family != sctp_ifap->address.sa.sa_family)
4854 if (addr->sa_family == AF_INET) {
4855 if (((struct sockaddr_in *)addr)->sin_addr.s_addr ==
4856 sctp_ifap->address.sin.sin_addr.s_addr) {
4858 if (holds_lock == 0)
4859 SCTP_IPI_ADDR_RUNLOCK();
4866 if (addr->sa_family == AF_INET6) {
4867 if (SCTP6_ARE_ADDR_EQUAL((struct sockaddr_in6 *)addr,
4868 &sctp_ifap->address.sin6)) {
4870 if (holds_lock == 0)
4871 SCTP_IPI_ADDR_RUNLOCK();
4878 if (holds_lock == 0)
4879 SCTP_IPI_ADDR_RUNLOCK();
4884 sctp_user_rcvd(struct sctp_tcb *stcb, uint32_t * freed_so_far, int hold_rlock,
4887 /* User pulled some data, do we need a rwnd update? */
4890 struct socket *so = NULL;
4895 atomic_add_int(&stcb->asoc.refcnt, 1);
4897 if (stcb->asoc.state & (SCTP_STATE_ABOUT_TO_BE_FREED |
4898 SCTP_STATE_SHUTDOWN_RECEIVED |
4899 SCTP_STATE_SHUTDOWN_ACK_SENT)) {
4900 /* Pre-check If we are freeing no update */
4903 SCTP_INP_INCR_REF(stcb->sctp_ep);
4904 if ((stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
4905 (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
4908 so = stcb->sctp_socket;
4912 atomic_add_int(&stcb->freed_by_sorcv_sincelast, *freed_so_far);
4913 /* Have you have freed enough to look */
4915 /* Yep, its worth a look and the lock overhead */
4917 /* Figure out what the rwnd would be */
4918 rwnd = sctp_calc_rwnd(stcb, &stcb->asoc);
4919 if (rwnd >= stcb->asoc.my_last_reported_rwnd) {
4920 dif = rwnd - stcb->asoc.my_last_reported_rwnd;
4924 if (dif >= rwnd_req) {
4926 SCTP_INP_READ_UNLOCK(stcb->sctp_ep);
4929 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
4931 * One last check before we allow the guy possibly
4932 * to get in. There is a race, where the guy has not
4933 * reached the gate. In that case
4937 SCTP_TCB_LOCK(stcb);
4938 if (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
4939 /* No reports here */
4940 SCTP_TCB_UNLOCK(stcb);
4943 SCTP_STAT_INCR(sctps_wu_sacks_sent);
4944 sctp_send_sack(stcb, SCTP_SO_LOCKED);
4946 sctp_chunk_output(stcb->sctp_ep, stcb,
4947 SCTP_OUTPUT_FROM_USR_RCVD, SCTP_SO_LOCKED);
4948 /* make sure no timer is running */
4949 sctp_timer_stop(SCTP_TIMER_TYPE_RECV, stcb->sctp_ep, stcb, NULL, SCTP_FROM_SCTPUTIL + SCTP_LOC_6);
4950 SCTP_TCB_UNLOCK(stcb);
4952 /* Update how much we have pending */
4953 stcb->freed_by_sorcv_sincelast = dif;
4956 if (so && r_unlocked && hold_rlock) {
4957 SCTP_INP_READ_LOCK(stcb->sctp_ep);
4959 SCTP_INP_DECR_REF(stcb->sctp_ep);
4961 atomic_add_int(&stcb->asoc.refcnt, -1);
4966 sctp_sorecvmsg(struct socket *so,
4969 struct sockaddr *from,
4972 struct sctp_sndrcvinfo *sinfo,
4976 * MSG flags we will look at MSG_DONTWAIT - non-blocking IO.
4977 * MSG_PEEK - Look don't touch :-D (only valid with OUT mbuf copy
4978 * mp=NULL thus uio is the copy method to userland) MSG_WAITALL - ??
4979 * On the way out we may send out any combination of:
4980 * MSG_NOTIFICATION MSG_EOR
4983 struct sctp_inpcb *inp = NULL;
4985 int cp_len = 0, error = 0;
4986 struct sctp_queued_to_read *control = NULL, *ctl = NULL, *nxt = NULL;
4987 struct mbuf *m = NULL;
4988 struct sctp_tcb *stcb = NULL;
4989 int wakeup_read_socket = 0;
4990 int freecnt_applied = 0;
4991 int out_flags = 0, in_flags = 0;
4992 int block_allowed = 1;
4993 uint32_t freed_so_far = 0;
4994 uint32_t copied_so_far = 0;
4995 int in_eeor_mode = 0;
4996 int no_rcv_needed = 0;
4997 uint32_t rwnd_req = 0;
4998 int hold_sblock = 0;
5001 uint32_t held_length = 0;
5002 int sockbuf_lock = 0;
5005 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5009 in_flags = *msg_flags;
5010 if (in_flags & MSG_PEEK)
5011 SCTP_STAT_INCR(sctps_read_peeks);
5015 slen = uio->uio_resid;
5017 /* Pull in and set up our int flags */
5018 if (in_flags & MSG_OOB) {
5019 /* Out of band's NOT supported */
5020 return (EOPNOTSUPP);
5022 if ((in_flags & MSG_PEEK) && (mp != NULL)) {
5023 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
5026 if ((in_flags & (MSG_DONTWAIT
5029 SCTP_SO_IS_NBIO(so)) {
5032 /* setup the endpoint */
5033 inp = (struct sctp_inpcb *)so->so_pcb;
5035 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EFAULT);
5038 rwnd_req = (SCTP_SB_LIMIT_RCV(so) >> SCTP_RWND_HIWAT_SHIFT);
5039 /* Must be at least a MTU's worth */
5040 if (rwnd_req < SCTP_MIN_RWND)
5041 rwnd_req = SCTP_MIN_RWND;
5042 in_eeor_mode = sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXPLICIT_EOR);
5043 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5044 sctp_misc_ints(SCTP_SORECV_ENTER,
5045 rwnd_req, in_eeor_mode, so->so_rcv.sb_cc, uio->uio_resid);
5047 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5048 sctp_misc_ints(SCTP_SORECV_ENTERPL,
5049 rwnd_req, block_allowed, so->so_rcv.sb_cc, uio->uio_resid);
5051 error = sblock(&so->so_rcv, (block_allowed ? SBL_WAIT : 0));
5054 goto release_unlocked;
5060 if (hold_sblock == 0) {
5061 SOCKBUF_LOCK(&so->so_rcv);
5064 if ((inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) ||
5065 (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_ALLGONE)) {
5068 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5070 error = so->so_error;
5071 if ((in_flags & MSG_PEEK) == 0)
5075 if (so->so_rcv.sb_cc == 0) {
5076 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5083 if ((so->so_rcv.sb_cc <= held_length) && block_allowed) {
5084 /* we need to wait for data */
5085 if ((so->so_rcv.sb_cc == 0) &&
5086 ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5087 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL))) {
5088 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5090 * For active open side clear flags for
5091 * re-use passive open is blocked by
5094 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5096 * You were aborted, passive side
5099 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5102 so->so_state &= ~(SS_ISCONNECTING |
5103 SS_ISDISCONNECTING |
5107 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5108 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5115 error = sbwait(&so->so_rcv);
5120 goto restart_nosblocks;
5121 } else if (so->so_rcv.sb_cc == 0) {
5123 error = so->so_error;
5124 if ((in_flags & MSG_PEEK) == 0)
5127 if ((inp->sctp_flags & SCTP_PCB_FLAGS_TCPTYPE) ||
5128 (inp->sctp_flags & SCTP_PCB_FLAGS_IN_TCPPOOL)) {
5129 if ((inp->sctp_flags & SCTP_PCB_FLAGS_CONNECTED) == 0) {
5131 * For active open side clear flags
5132 * for re-use passive open is
5133 * blocked by connect.
5135 if (inp->sctp_flags & SCTP_PCB_FLAGS_WAS_ABORTED) {
5137 * You were aborted, passive
5138 * side always hits here
5140 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ECONNRESET);
5143 so->so_state &= ~(SS_ISCONNECTING |
5144 SS_ISDISCONNECTING |
5148 if ((inp->sctp_flags & SCTP_PCB_FLAGS_WAS_CONNECTED) == 0) {
5149 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOTCONN);
5156 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EWOULDBLOCK);
5157 error = EWOULDBLOCK;
5161 if (hold_sblock == 1) {
5162 SOCKBUF_UNLOCK(&so->so_rcv);
5165 /* we possibly have data we can read */
5166 /* sa_ignore FREED_MEMORY */
5167 control = TAILQ_FIRST(&inp->read_queue);
5168 if (control == NULL) {
5170 * This could be happening since the appender did the
5171 * increment but as not yet did the tailq insert onto the
5174 if (hold_rlock == 0) {
5175 SCTP_INP_READ_LOCK(inp);
5177 control = TAILQ_FIRST(&inp->read_queue);
5178 if ((control == NULL) && (so->so_rcv.sb_cc != 0)) {
5180 panic("Huh, its non zero and nothing on control?");
5182 so->so_rcv.sb_cc = 0;
5184 SCTP_INP_READ_UNLOCK(inp);
5188 if ((control->length == 0) &&
5189 (control->do_not_ref_stcb)) {
5191 * Clean up code for freeing assoc that left behind a
5192 * pdapi.. maybe a peer in EEOR that just closed after
5193 * sending and never indicated a EOR.
5195 if (hold_rlock == 0) {
5197 SCTP_INP_READ_LOCK(inp);
5199 control->held_length = 0;
5200 if (control->data) {
5201 /* Hmm there is data here .. fix */
5205 m_tmp = control->data;
5207 cnt += SCTP_BUF_LEN(m_tmp);
5208 if (SCTP_BUF_NEXT(m_tmp) == NULL) {
5209 control->tail_mbuf = m_tmp;
5210 control->end_added = 1;
5212 m_tmp = SCTP_BUF_NEXT(m_tmp);
5214 control->length = cnt;
5217 TAILQ_REMOVE(&inp->read_queue, control, next);
5218 /* Add back any hiddend data */
5219 sctp_free_remote_addr(control->whoFrom);
5220 sctp_free_a_readq(stcb, control);
5224 SCTP_INP_READ_UNLOCK(inp);
5228 if ((control->length == 0) &&
5229 (control->end_added == 1)) {
5231 * Do we also need to check for (control->pdapi_aborted ==
5234 if (hold_rlock == 0) {
5236 SCTP_INP_READ_LOCK(inp);
5238 TAILQ_REMOVE(&inp->read_queue, control, next);
5239 if (control->data) {
5241 panic("control->data not null but control->length == 0");
5243 SCTP_PRINTF("Strange, data left in the control buffer. Cleaning up.\n");
5244 sctp_m_freem(control->data);
5245 control->data = NULL;
5248 if (control->aux_data) {
5249 sctp_m_free(control->aux_data);
5250 control->aux_data = NULL;
5252 sctp_free_remote_addr(control->whoFrom);
5253 sctp_free_a_readq(stcb, control);
5256 SCTP_INP_READ_UNLOCK(inp);
5260 if (control->length == 0) {
5261 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE)) &&
5263 /* find a more suitable one then this */
5264 ctl = TAILQ_NEXT(control, next);
5266 if ((ctl->stcb != control->stcb) && (ctl->length) &&
5268 (ctl->spec_flags & M_NOTIFICATION) ||
5269 ((ctl->do_not_ref_stcb == 0) &&
5270 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))
5273 * If we have a different TCB next, and there is data
5274 * present. If we have already taken some (pdapi), OR we can
5275 * ref the tcb and no delivery as started on this stream, we
5276 * take it. Note we allow a notification on a different
5277 * assoc to be delivered..
5281 } else if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_INTERLEAVE_STRMS)) &&
5283 ((ctl->some_taken) ||
5284 ((ctl->do_not_ref_stcb == 0) &&
5285 ((ctl->spec_flags & M_NOTIFICATION) == 0) &&
5286 (ctl->stcb->asoc.strmin[ctl->sinfo_stream].delivery_started == 0)))) {
5288 * If we have the same tcb, and there is data present, and we
5289 * have the strm interleave feature present. Then if we have
5290 * taken some (pdapi) or we can refer to tht tcb AND we have
5291 * not started a delivery for this stream, we can take it.
5292 * Note we do NOT allow a notificaiton on the same assoc to
5298 ctl = TAILQ_NEXT(ctl, next);
5302 * if we reach here, not suitable replacement is available
5303 * <or> fragment interleave is NOT on. So stuff the sb_cc
5304 * into the our held count, and its time to sleep again.
5306 held_length = so->so_rcv.sb_cc;
5307 control->held_length = so->so_rcv.sb_cc;
5310 /* Clear the held length since there is something to read */
5311 control->held_length = 0;
5313 SCTP_INP_READ_UNLOCK(inp);
5318 * If we reach here, control has a some data for us to read off.
5319 * Note that stcb COULD be NULL.
5321 control->some_taken++;
5323 SOCKBUF_UNLOCK(&so->so_rcv);
5326 stcb = control->stcb;
5328 if ((control->do_not_ref_stcb == 0) &&
5329 (stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED)) {
5330 if (freecnt_applied == 0)
5332 } else if (control->do_not_ref_stcb == 0) {
5333 /* you can't free it on me please */
5335 * The lock on the socket buffer protects us so the
5336 * free code will stop. But since we used the
5337 * socketbuf lock and the sender uses the tcb_lock
5338 * to increment, we need to use the atomic add to
5341 if (freecnt_applied) {
5343 panic("refcnt already incremented");
5345 printf("refcnt already incremented?\n");
5348 atomic_add_int(&stcb->asoc.refcnt, 1);
5349 freecnt_applied = 1;
5352 * Setup to remember how much we have not yet told
5353 * the peer our rwnd has opened up. Note we grab the
5354 * value from the tcb from last time. Note too that
5355 * sack sending clears this when a sack is sent,
5356 * which is fine. Once we hit the rwnd_req, we then
5357 * will go to the sctp_user_rcvd() that will not
5358 * lock until it KNOWs it MUST send a WUP-SACK.
5360 freed_so_far = stcb->freed_by_sorcv_sincelast;
5361 stcb->freed_by_sorcv_sincelast = 0;
5365 ((control->spec_flags & M_NOTIFICATION) == 0) &&
5366 control->do_not_ref_stcb == 0) {
5367 stcb->asoc.strmin[control->sinfo_stream].delivery_started = 1;
5369 /* First lets get off the sinfo and sockaddr info */
5370 if ((sinfo) && filling_sinfo) {
5371 memcpy(sinfo, control, sizeof(struct sctp_nonpad_sndrcvinfo));
5372 nxt = TAILQ_NEXT(control, next);
5373 if (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5374 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) {
5375 struct sctp_extrcvinfo *s_extra;
5377 s_extra = (struct sctp_extrcvinfo *)sinfo;
5380 s_extra->sreinfo_next_flags = SCTP_NEXT_MSG_AVAIL;
5381 if (nxt->sinfo_flags & SCTP_UNORDERED) {
5382 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_UNORDERED;
5384 if (nxt->spec_flags & M_NOTIFICATION) {
5385 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_IS_NOTIFICATION;
5387 s_extra->sreinfo_next_aid = nxt->sinfo_assoc_id;
5388 s_extra->sreinfo_next_length = nxt->length;
5389 s_extra->sreinfo_next_ppid = nxt->sinfo_ppid;
5390 s_extra->sreinfo_next_stream = nxt->sinfo_stream;
5391 if (nxt->tail_mbuf != NULL) {
5392 if (nxt->end_added) {
5393 s_extra->sreinfo_next_flags |= SCTP_NEXT_MSG_ISCOMPLETE;
5398 * we explicitly 0 this, since the memcpy
5399 * got some other things beyond the older
5400 * sinfo_ that is on the control's structure
5404 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
5405 s_extra->sreinfo_next_aid = 0;
5406 s_extra->sreinfo_next_length = 0;
5407 s_extra->sreinfo_next_ppid = 0;
5408 s_extra->sreinfo_next_stream = 0;
5412 * update off the real current cum-ack, if we have an stcb.
5414 if ((control->do_not_ref_stcb == 0) && stcb)
5415 sinfo->sinfo_cumtsn = stcb->asoc.cumulative_tsn;
5417 * mask off the high bits, we keep the actual chunk bits in
5420 sinfo->sinfo_flags &= 0x00ff;
5421 if ((control->sinfo_flags >> 8) & SCTP_DATA_UNORDERED) {
5422 sinfo->sinfo_flags |= SCTP_UNORDERED;
5425 #ifdef SCTP_ASOCLOG_OF_TSNS
5427 int index, newindex;
5428 struct sctp_pcbtsn_rlog *entry;
5431 index = inp->readlog_index;
5432 newindex = index + 1;
5433 if (newindex >= SCTP_READ_LOG_SIZE) {
5436 } while (atomic_cmpset_int(&inp->readlog_index, index, newindex) == 0);
5437 entry = &inp->readlog[index];
5438 entry->vtag = control->sinfo_assoc_id;
5439 entry->strm = control->sinfo_stream;
5440 entry->seq = control->sinfo_ssn;
5441 entry->sz = control->length;
5442 entry->flgs = control->sinfo_flags;
5445 if (fromlen && from) {
5446 cp_len = min((size_t)fromlen, (size_t)control->whoFrom->ro._l_addr.sa.sa_len);
5447 switch (control->whoFrom->ro._l_addr.sa.sa_family) {
5450 ((struct sockaddr_in6 *)from)->sin6_port = control->port_from;
5455 ((struct sockaddr_in *)from)->sin_port = control->port_from;
5461 memcpy(from, &control->whoFrom->ro._l_addr, cp_len);
5463 #if defined(INET) && defined(INET6)
5464 if ((sctp_is_feature_on(inp, SCTP_PCB_FLAGS_NEEDS_MAPPED_V4)) &&
5465 (from->sa_family == AF_INET) &&
5466 ((size_t)fromlen >= sizeof(struct sockaddr_in6))) {
5467 struct sockaddr_in *sin;
5468 struct sockaddr_in6 sin6;
5470 sin = (struct sockaddr_in *)from;
5471 bzero(&sin6, sizeof(sin6));
5472 sin6.sin6_family = AF_INET6;
5473 sin6.sin6_len = sizeof(struct sockaddr_in6);
5474 sin6.sin6_addr.s6_addr32[2] = htonl(0xffff);
5475 bcopy(&sin->sin_addr,
5476 &sin6.sin6_addr.s6_addr32[3],
5477 sizeof(sin6.sin6_addr.s6_addr32[3]));
5478 sin6.sin6_port = sin->sin_port;
5479 memcpy(from, &sin6, sizeof(struct sockaddr_in6));
5484 struct sockaddr_in6 lsa6, *from6;
5486 from6 = (struct sockaddr_in6 *)from;
5487 sctp_recover_scope_mac(from6, (&lsa6));
5491 /* now copy out what data we can */
5493 /* copy out each mbuf in the chain up to length */
5497 /* Move out all we can */
5498 cp_len = (int)uio->uio_resid;
5499 my_len = (int)SCTP_BUF_LEN(m);
5500 if (cp_len > my_len) {
5501 /* not enough in this buf */
5505 SCTP_INP_READ_UNLOCK(inp);
5509 error = uiomove(mtod(m, char *), cp_len, uio);
5511 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE) {
5514 if ((control->do_not_ref_stcb == 0) && stcb &&
5515 stcb->asoc.state & SCTP_STATE_ABOUT_TO_BE_FREED) {
5519 /* error we are out of here */
5522 if ((SCTP_BUF_NEXT(m) == NULL) &&
5523 (cp_len >= SCTP_BUF_LEN(m)) &&
5524 ((control->end_added == 0) ||
5525 (control->end_added &&
5526 (TAILQ_NEXT(control, next) == NULL)))
5528 SCTP_INP_READ_LOCK(inp);
5531 if (cp_len == SCTP_BUF_LEN(m)) {
5532 if ((SCTP_BUF_NEXT(m) == NULL) &&
5533 (control->end_added)) {
5534 out_flags |= MSG_EOR;
5535 if ((control->do_not_ref_stcb == 0) &&
5536 (control->stcb != NULL) &&
5537 ((control->spec_flags & M_NOTIFICATION) == 0))
5538 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5540 if (control->spec_flags & M_NOTIFICATION) {
5541 out_flags |= MSG_NOTIFICATION;
5543 /* we ate up the mbuf */
5544 if (in_flags & MSG_PEEK) {
5546 m = SCTP_BUF_NEXT(m);
5547 copied_so_far += cp_len;
5549 /* dispose of the mbuf */
5550 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5551 sctp_sblog(&so->so_rcv,
5552 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5554 sctp_sbfree(control, stcb, &so->so_rcv, m);
5555 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5556 sctp_sblog(&so->so_rcv,
5557 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5559 copied_so_far += cp_len;
5560 freed_so_far += cp_len;
5561 freed_so_far += MSIZE;
5562 atomic_subtract_int(&control->length, cp_len);
5563 control->data = sctp_m_free(m);
5566 * been through it all, must hold sb
5567 * lock ok to null tail
5569 if (control->data == NULL) {
5571 if ((control->end_added == 0) ||
5572 (TAILQ_NEXT(control, next) == NULL)) {
5580 if (mtx_owned(&inp->inp_rdata_mtx) == 0) {
5581 panic("Hmm we don't own the lock?");
5585 control->tail_mbuf = NULL;
5587 if ((control->end_added) && ((out_flags & MSG_EOR) == 0)) {
5588 panic("end_added, nothing left and no MSG_EOR");
5594 /* Do we need to trim the mbuf? */
5595 if (control->spec_flags & M_NOTIFICATION) {
5596 out_flags |= MSG_NOTIFICATION;
5598 if ((in_flags & MSG_PEEK) == 0) {
5599 SCTP_BUF_RESV_UF(m, cp_len);
5600 SCTP_BUF_LEN(m) -= cp_len;
5601 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5602 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, cp_len);
5604 atomic_subtract_int(&so->so_rcv.sb_cc, cp_len);
5605 if ((control->do_not_ref_stcb == 0) &&
5607 atomic_subtract_int(&stcb->asoc.sb_cc, cp_len);
5609 copied_so_far += cp_len;
5610 freed_so_far += cp_len;
5611 freed_so_far += MSIZE;
5612 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5613 sctp_sblog(&so->so_rcv, control->do_not_ref_stcb ? NULL : stcb,
5614 SCTP_LOG_SBRESULT, 0);
5616 atomic_subtract_int(&control->length, cp_len);
5618 copied_so_far += cp_len;
5621 if ((out_flags & MSG_EOR) || (uio->uio_resid == 0)) {
5624 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5625 (control->do_not_ref_stcb == 0) &&
5626 (freed_so_far >= rwnd_req)) {
5627 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5629 } /* end while(m) */
5631 * At this point we have looked at it all and we either have
5632 * a MSG_EOR/or read all the user wants... <OR>
5633 * control->length == 0.
5635 if ((out_flags & MSG_EOR) && ((in_flags & MSG_PEEK) == 0)) {
5636 /* we are done with this control */
5637 if (control->length == 0) {
5638 if (control->data) {
5640 panic("control->data not null at read eor?");
5642 SCTP_PRINTF("Strange, data left in the control buffer .. invarients would panic?\n");
5643 sctp_m_freem(control->data);
5644 control->data = NULL;
5648 if (TAILQ_NEXT(control, next) == NULL) {
5650 * If we don't have a next we need a
5651 * lock, if there is a next
5652 * interrupt is filling ahead of us
5653 * and we don't need a lock to
5654 * remove this guy (which is the
5655 * head of the queue).
5657 if (hold_rlock == 0) {
5658 SCTP_INP_READ_LOCK(inp);
5662 TAILQ_REMOVE(&inp->read_queue, control, next);
5663 /* Add back any hiddend data */
5664 if (control->held_length) {
5666 control->held_length = 0;
5667 wakeup_read_socket = 1;
5669 if (control->aux_data) {
5670 sctp_m_free(control->aux_data);
5671 control->aux_data = NULL;
5673 no_rcv_needed = control->do_not_ref_stcb;
5674 sctp_free_remote_addr(control->whoFrom);
5675 control->data = NULL;
5676 sctp_free_a_readq(stcb, control);
5678 if ((freed_so_far >= rwnd_req) &&
5679 (no_rcv_needed == 0))
5680 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5684 * The user did not read all of this
5685 * message, turn off the returned MSG_EOR
5686 * since we are leaving more behind on the
5690 if (control->end_added &&
5691 (control->data == NULL) &&
5692 (control->tail_mbuf == NULL)) {
5693 panic("Gak, control->length is corrupt?");
5696 no_rcv_needed = control->do_not_ref_stcb;
5697 out_flags &= ~MSG_EOR;
5700 if (out_flags & MSG_EOR) {
5703 if ((uio->uio_resid == 0) ||
5704 ((in_eeor_mode) && (copied_so_far >= max(so->so_rcv.sb_lowat, 1)))
5709 * If I hit here the receiver wants more and this message is
5710 * NOT done (pd-api). So two questions. Can we block? if not
5711 * we are done. Did the user NOT set MSG_WAITALL?
5713 if (block_allowed == 0) {
5717 * We need to wait for more data a few things: - We don't
5718 * sbunlock() so we don't get someone else reading. - We
5719 * must be sure to account for the case where what is added
5720 * is NOT to our control when we wakeup.
5724 * Do we need to tell the transport a rwnd update might be
5725 * needed before we go to sleep?
5727 if (((stcb) && (in_flags & MSG_PEEK) == 0) &&
5728 ((freed_so_far >= rwnd_req) &&
5729 (control->do_not_ref_stcb == 0) &&
5730 (no_rcv_needed == 0))) {
5731 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5734 if (so->so_rcv.sb_state & SBS_CANTRCVMORE) {
5737 if (inp->sctp_flags & SCTP_PCB_FLAGS_SOCKET_GONE)
5740 if (hold_rlock == 1) {
5741 SCTP_INP_READ_UNLOCK(inp);
5744 if (hold_sblock == 0) {
5745 SOCKBUF_LOCK(&so->so_rcv);
5748 if ((copied_so_far) && (control->length == 0) &&
5749 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_FRAG_INTERLEAVE))) {
5752 if (so->so_rcv.sb_cc <= control->held_length) {
5753 error = sbwait(&so->so_rcv);
5757 control->held_length = 0;
5760 SOCKBUF_UNLOCK(&so->so_rcv);
5763 if (control->length == 0) {
5764 /* still nothing here */
5765 if (control->end_added == 1) {
5766 /* he aborted, or is done i.e.did a shutdown */
5767 out_flags |= MSG_EOR;
5768 if (control->pdapi_aborted) {
5769 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5770 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5772 out_flags |= MSG_TRUNC;
5774 if ((control->do_not_ref_stcb == 0) && ((control->spec_flags & M_NOTIFICATION) == 0))
5775 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5777 goto done_with_control;
5779 if (so->so_rcv.sb_cc > held_length) {
5780 control->held_length = so->so_rcv.sb_cc;
5783 goto wait_some_more;
5784 } else if (control->data == NULL) {
5786 * we must re-sync since data is probably being
5789 SCTP_INP_READ_LOCK(inp);
5790 if ((control->length > 0) && (control->data == NULL)) {
5792 * big trouble.. we have the lock and its
5796 panic("Impossible data==NULL length !=0");
5798 out_flags |= MSG_EOR;
5799 out_flags |= MSG_TRUNC;
5800 control->length = 0;
5801 SCTP_INP_READ_UNLOCK(inp);
5802 goto done_with_control;
5804 SCTP_INP_READ_UNLOCK(inp);
5805 /* We will fall around to get more data */
5810 * Give caller back the mbuf chain,
5811 * store in uio_resid the length
5813 wakeup_read_socket = 0;
5814 if ((control->end_added == 0) ||
5815 (TAILQ_NEXT(control, next) == NULL)) {
5816 /* Need to get rlock */
5817 if (hold_rlock == 0) {
5818 SCTP_INP_READ_LOCK(inp);
5822 if (control->end_added) {
5823 out_flags |= MSG_EOR;
5824 if ((control->do_not_ref_stcb == 0) &&
5825 (control->stcb != NULL) &&
5826 ((control->spec_flags & M_NOTIFICATION) == 0))
5827 control->stcb->asoc.strmin[control->sinfo_stream].delivery_started = 0;
5829 if (control->spec_flags & M_NOTIFICATION) {
5830 out_flags |= MSG_NOTIFICATION;
5832 uio->uio_resid = control->length;
5833 *mp = control->data;
5836 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5837 sctp_sblog(&so->so_rcv,
5838 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBFREE, SCTP_BUF_LEN(m));
5840 sctp_sbfree(control, stcb, &so->so_rcv, m);
5841 freed_so_far += SCTP_BUF_LEN(m);
5842 freed_so_far += MSIZE;
5843 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_SB_LOGGING_ENABLE) {
5844 sctp_sblog(&so->so_rcv,
5845 control->do_not_ref_stcb ? NULL : stcb, SCTP_LOG_SBRESULT, 0);
5847 m = SCTP_BUF_NEXT(m);
5849 control->data = control->tail_mbuf = NULL;
5850 control->length = 0;
5851 if (out_flags & MSG_EOR) {
5852 /* Done with this control */
5853 goto done_with_control;
5857 if (hold_rlock == 1) {
5858 SCTP_INP_READ_UNLOCK(inp);
5861 if (hold_sblock == 1) {
5862 SOCKBUF_UNLOCK(&so->so_rcv);
5865 sbunlock(&so->so_rcv);
5870 SOCKBUF_UNLOCK(&so->so_rcv);
5873 if ((stcb) && (in_flags & MSG_PEEK) == 0) {
5874 if ((freed_so_far >= rwnd_req) &&
5875 (control && (control->do_not_ref_stcb == 0)) &&
5876 (no_rcv_needed == 0))
5877 sctp_user_rcvd(stcb, &freed_so_far, hold_rlock, rwnd_req);
5881 *msg_flags = out_flags;
5883 if (((out_flags & MSG_EOR) == 0) &&
5884 ((in_flags & MSG_PEEK) == 0) &&
5886 (sctp_is_feature_on(inp, SCTP_PCB_FLAGS_EXT_RCVINFO) ||
5887 sctp_is_feature_on(inp, SCTP_PCB_FLAGS_RECVNXTINFO))) {
5888 struct sctp_extrcvinfo *s_extra;
5890 s_extra = (struct sctp_extrcvinfo *)sinfo;
5891 s_extra->sreinfo_next_flags = SCTP_NO_NEXT_MSG;
5893 if (hold_rlock == 1) {
5894 SCTP_INP_READ_UNLOCK(inp);
5897 SOCKBUF_UNLOCK(&so->so_rcv);
5900 sbunlock(&so->so_rcv);
5902 if (freecnt_applied) {
5904 * The lock on the socket buffer protects us so the free
5905 * code will stop. But since we used the socketbuf lock and
5906 * the sender uses the tcb_lock to increment, we need to use
5907 * the atomic add to the refcnt.
5911 panic("stcb for refcnt has gone NULL?");
5917 atomic_add_int(&stcb->asoc.refcnt, -1);
5918 /* Save the value back for next time */
5919 stcb->freed_by_sorcv_sincelast = freed_so_far;
5921 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_RECV_RWND_LOGGING_ENABLE) {
5923 sctp_misc_ints(SCTP_SORECV_DONE,
5925 ((uio) ? (slen - uio->uio_resid) : slen),
5929 sctp_misc_ints(SCTP_SORECV_DONE,
5931 ((uio) ? (slen - uio->uio_resid) : slen),
5937 if (wakeup_read_socket) {
5938 sctp_sorwakeup(inp, so);
5944 #ifdef SCTP_MBUF_LOGGING
5946 sctp_m_free(struct mbuf *m)
5948 if (SCTP_BASE_SYSCTL(sctp_logging_level) & SCTP_MBUF_LOGGING_ENABLE) {
5949 if (SCTP_BUF_IS_EXTENDED(m)) {
5950 sctp_log_mb(m, SCTP_MBUF_IFREE);
5957 sctp_m_freem(struct mbuf *mb)
5960 mb = sctp_m_free(mb);
5966 sctp_dynamic_set_primary(struct sockaddr *sa, uint32_t vrf_id)
5969 * Given a local address. For all associations that holds the
5970 * address, request a peer-set-primary.
5972 struct sctp_ifa *ifa;
5973 struct sctp_laddr *wi;
5975 ifa = sctp_find_ifa_by_addr(sa, vrf_id, 0);
5977 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, EADDRNOTAVAIL);
5978 return (EADDRNOTAVAIL);
5981 * Now that we have the ifa we must awaken the iterator with this
5984 wi = SCTP_ZONE_GET(SCTP_BASE_INFO(ipi_zone_laddr), struct sctp_laddr);
5986 SCTP_LTRACE_ERR_RET(NULL, NULL, NULL, SCTP_FROM_SCTPUTIL, ENOMEM);
5989 /* Now incr the count and int wi structure */
5990 SCTP_INCR_LADDR_COUNT();
5991 bzero(wi, sizeof(*wi));
5992 (void)SCTP_GETTIME_TIMEVAL(&wi->start_time);
5994 wi->action = SCTP_SET_PRIM_ADDR;
5995 atomic_add_int(&ifa->refcount, 1);
5997 /* Now add it to the work queue */
5998 SCTP_WQ_ADDR_LOCK();
6000 * Should this really be a tailq? As it is we will process the
6003 LIST_INSERT_HEAD(&SCTP_BASE_INFO(addr_wq), wi, sctp_nxt_addr);
6004 SCTP_WQ_ADDR_UNLOCK();
6005 sctp_timer_start(SCTP_TIMER_TYPE_ADDR_WQ,
6006 (struct sctp_inpcb *)NULL,
6007 (struct sctp_tcb *)NULL,
6008 (struct sctp_nets *)NULL);
6014 sctp_soreceive(struct socket *so,
6015 struct sockaddr **psa,
6018 struct mbuf **controlp,
6022 uint8_t sockbuf[256];
6023 struct sockaddr *from;
6024 struct sctp_extrcvinfo sinfo;
6025 int filling_sinfo = 1;
6026 struct sctp_inpcb *inp;
6028 inp = (struct sctp_inpcb *)so->so_pcb;
6029 /* pickup the assoc we are reading from */
6031 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6034 if ((sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVDATAIOEVNT) &&
6035 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVRCVINFO) &&
6036 sctp_is_feature_off(inp, SCTP_PCB_FLAGS_RECVNXTINFO)) ||
6037 (controlp == NULL)) {
6038 /* user does not want the sndrcv ctl */
6042 from = (struct sockaddr *)sockbuf;
6043 fromlen = sizeof(sockbuf);
6050 error = sctp_sorecvmsg(so, uio, mp0, from, fromlen, flagsp,
6051 (struct sctp_sndrcvinfo *)&sinfo, filling_sinfo);
6052 if ((controlp) && (filling_sinfo)) {
6053 /* copy back the sinfo in a CMSG format */
6055 *controlp = sctp_build_ctl_nchunk(inp,
6056 (struct sctp_sndrcvinfo *)&sinfo);
6061 /* copy back the address info */
6062 if (from && from->sa_len) {
6063 *psa = sodupsockaddr(from, M_NOWAIT);
6076 sctp_connectx_helper_add(struct sctp_tcb *stcb, struct sockaddr *addr,
6077 int totaddr, int *error)
6081 struct sctp_inpcb *inp;
6082 struct sockaddr *sa;
6086 struct sockaddr_in *sin;
6090 struct sockaddr_in6 *sin6;
6095 inp = stcb->sctp_ep;
6097 for (i = 0; i < totaddr; i++) {
6098 switch (sa->sa_family) {
6101 incr = sizeof(struct sockaddr_in);
6102 sin = (struct sockaddr_in *)sa;
6103 if ((sin->sin_addr.s_addr == INADDR_ANY) ||
6104 (sin->sin_addr.s_addr == INADDR_BROADCAST) ||
6105 IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
6106 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6107 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6111 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6112 /* assoc gone no un-lock */
6113 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6114 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_7);
6123 incr = sizeof(struct sockaddr_in6);
6124 sin6 = (struct sockaddr_in6 *)sa;
6125 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr) ||
6126 IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
6127 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6128 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6132 if (sctp_add_remote_addr(stcb, sa, NULL, SCTP_DONOT_SETSCOPE, SCTP_ADDR_IS_CONFIRMED)) {
6133 /* assoc gone no un-lock */
6134 SCTP_LTRACE_ERR_RET(NULL, stcb, NULL, SCTP_FROM_SCTPUTIL, ENOBUFS);
6135 (void)sctp_free_assoc(inp, stcb, SCTP_NORMAL_PROC, SCTP_FROM_SCTP_USRREQ + SCTP_LOC_8);
6145 sa = (struct sockaddr *)((caddr_t)sa + incr);
6152 sctp_connectx_helper_find(struct sctp_inpcb *inp, struct sockaddr *addr,
6153 int *totaddr, int *num_v4, int *num_v6, int *error,
6154 int limit, int *bad_addr)
6156 struct sockaddr *sa;
6157 struct sctp_tcb *stcb = NULL;
6163 *error = *num_v6 = *num_v4 = 0;
6164 /* account and validate addresses */
6165 for (i = 0; i < (size_t)*totaddr; i++) {
6166 switch (sa->sa_family) {
6170 incr = sizeof(struct sockaddr_in);
6171 if (sa->sa_len != incr) {
6172 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6182 struct sockaddr_in6 *sin6;
6184 sin6 = (struct sockaddr_in6 *)sa;
6185 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6186 /* Must be non-mapped for connectx */
6187 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6193 incr = sizeof(struct sockaddr_in6);
6194 if (sa->sa_len != incr) {
6195 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6208 if (i == (size_t)*totaddr) {
6211 SCTP_INP_INCR_REF(inp);
6212 stcb = sctp_findassociation_ep_addr(&inp, sa, NULL, NULL, NULL);
6214 /* Already have or am bring up an association */
6217 SCTP_INP_DECR_REF(inp);
6219 if ((at + incr) > (size_t)limit) {
6223 sa = (struct sockaddr *)((caddr_t)sa + incr);
6225 return ((struct sctp_tcb *)NULL);
6229 * sctp_bindx(ADD) for one address.
6230 * assumes all arguments are valid/checked by caller.
6233 sctp_bindx_add_address(struct socket *so, struct sctp_inpcb *inp,
6234 struct sockaddr *sa, sctp_assoc_t assoc_id,
6235 uint32_t vrf_id, int *error, void *p)
6237 struct sockaddr *addr_touse;
6240 struct sockaddr_in sin;
6244 /* see if we're bound all already! */
6245 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6246 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6252 if (sa->sa_family == AF_INET6) {
6253 struct sockaddr_in6 *sin6;
6255 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6256 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6260 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6261 /* can only bind v6 on PF_INET6 sockets */
6262 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6266 sin6 = (struct sockaddr_in6 *)addr_touse;
6267 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6268 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6269 SCTP_IPV6_V6ONLY(inp)) {
6270 /* can't bind v4-mapped on PF_INET sockets */
6271 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6275 in6_sin6_2_sin(&sin, sin6);
6276 addr_touse = (struct sockaddr *)&sin;
6281 if (sa->sa_family == AF_INET) {
6282 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6283 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6287 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6288 SCTP_IPV6_V6ONLY(inp)) {
6289 /* can't bind v4 on PF_INET sockets */
6290 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6296 if (inp->sctp_flags & SCTP_PCB_FLAGS_UNBOUND) {
6298 /* Can't get proc for Net/Open BSD */
6299 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6303 *error = sctp_inpcb_bind(so, addr_touse, NULL, p);
6307 * No locks required here since bind and mgmt_ep_sa all do their own
6308 * locking. If we do something for the FIX: below we may need to
6309 * lock in that case.
6311 if (assoc_id == 0) {
6312 /* add the address */
6313 struct sctp_inpcb *lep;
6314 struct sockaddr_in *lsin = (struct sockaddr_in *)addr_touse;
6316 /* validate the incoming port */
6317 if ((lsin->sin_port != 0) &&
6318 (lsin->sin_port != inp->sctp_lport)) {
6319 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6323 /* user specified 0 port, set it to existing port */
6324 lsin->sin_port = inp->sctp_lport;
6327 lep = sctp_pcb_findep(addr_touse, 1, 0, vrf_id);
6330 * We must decrement the refcount since we have the
6331 * ep already and are binding. No remove going on
6334 SCTP_INP_DECR_REF(lep);
6337 /* already bound to it.. ok */
6339 } else if (lep == NULL) {
6340 ((struct sockaddr_in *)addr_touse)->sin_port = 0;
6341 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6342 SCTP_ADD_IP_ADDRESS,
6345 *error = EADDRINUSE;
6351 * FIX: decide whether we allow assoc based bindx
6357 * sctp_bindx(DELETE) for one address.
6358 * assumes all arguments are valid/checked by caller.
6361 sctp_bindx_delete_address(struct sctp_inpcb *inp,
6362 struct sockaddr *sa, sctp_assoc_t assoc_id,
6363 uint32_t vrf_id, int *error)
6365 struct sockaddr *addr_touse;
6368 struct sockaddr_in sin;
6372 /* see if we're bound all already! */
6373 if (inp->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6374 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6380 if (sa->sa_family == AF_INET6) {
6381 struct sockaddr_in6 *sin6;
6383 if (sa->sa_len != sizeof(struct sockaddr_in6)) {
6384 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6388 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) == 0) {
6389 /* can only bind v6 on PF_INET6 sockets */
6390 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6394 sin6 = (struct sockaddr_in6 *)addr_touse;
6395 if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
6396 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6397 SCTP_IPV6_V6ONLY(inp)) {
6398 /* can't bind mapped-v4 on PF_INET sockets */
6399 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6403 in6_sin6_2_sin(&sin, sin6);
6404 addr_touse = (struct sockaddr *)&sin;
6409 if (sa->sa_family == AF_INET) {
6410 if (sa->sa_len != sizeof(struct sockaddr_in)) {
6411 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6415 if ((inp->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) &&
6416 SCTP_IPV6_V6ONLY(inp)) {
6417 /* can't bind v4 on PF_INET sockets */
6418 SCTP_LTRACE_ERR_RET(inp, NULL, NULL, SCTP_FROM_SCTPUTIL, EINVAL);
6425 * No lock required mgmt_ep_sa does its own locking. If the FIX:
6426 * below is ever changed we may need to lock before calling
6427 * association level binding.
6429 if (assoc_id == 0) {
6430 /* delete the address */
6431 *error = sctp_addr_mgmt_ep_sa(inp, addr_touse,
6432 SCTP_DEL_IP_ADDRESS,
6436 * FIX: decide whether we allow assoc based bindx
6442 * returns the valid local address count for an assoc, taking into account
6446 sctp_local_addr_count(struct sctp_tcb *stcb)
6448 int loopback_scope, ipv4_local_scope, local_scope, site_scope;
6449 int ipv4_addr_legal, ipv6_addr_legal;
6450 struct sctp_vrf *vrf;
6451 struct sctp_ifn *sctp_ifn;
6452 struct sctp_ifa *sctp_ifa;
6455 /* Turn on all the appropriate scopes */
6456 loopback_scope = stcb->asoc.loopback_scope;
6457 ipv4_local_scope = stcb->asoc.ipv4_local_scope;
6458 local_scope = stcb->asoc.local_scope;
6459 site_scope = stcb->asoc.site_scope;
6460 ipv4_addr_legal = ipv6_addr_legal = 0;
6461 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUND_V6) {
6462 ipv6_addr_legal = 1;
6463 if (SCTP_IPV6_V6ONLY(stcb->sctp_ep) == 0) {
6464 ipv4_addr_legal = 1;
6467 ipv4_addr_legal = 1;
6470 SCTP_IPI_ADDR_RLOCK();
6471 vrf = sctp_find_vrf(stcb->asoc.vrf_id);
6473 /* no vrf, no addresses */
6474 SCTP_IPI_ADDR_RUNLOCK();
6477 if (stcb->sctp_ep->sctp_flags & SCTP_PCB_FLAGS_BOUNDALL) {
6479 * bound all case: go through all ifns on the vrf
6481 LIST_FOREACH(sctp_ifn, &vrf->ifnlist, next_ifn) {
6482 if ((loopback_scope == 0) &&
6483 SCTP_IFN_IS_IFT_LOOP(sctp_ifn)) {
6486 LIST_FOREACH(sctp_ifa, &sctp_ifn->ifalist, next_ifa) {
6487 if (sctp_is_addr_restricted(stcb, sctp_ifa))
6489 switch (sctp_ifa->address.sa.sa_family) {
6492 if (ipv4_addr_legal) {
6493 struct sockaddr_in *sin;
6495 sin = (struct sockaddr_in *)&sctp_ifa->address.sa;
6496 if (sin->sin_addr.s_addr == 0) {
6503 if ((ipv4_local_scope == 0) &&
6504 (IN4_ISPRIVATE_ADDRESS(&sin->sin_addr))) {
6507 /* count this one */
6516 if (ipv6_addr_legal) {
6517 struct sockaddr_in6 *sin6;
6519 sin6 = (struct sockaddr_in6 *)&sctp_ifa->address.sa;
6520 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
6523 if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
6524 if (local_scope == 0)
6526 if (sin6->sin6_scope_id == 0) {
6527 if (sa6_recoverscope(sin6) != 0)
6545 if ((site_scope == 0) &&
6546 (IN6_IS_ADDR_SITELOCAL(&sin6->sin6_addr))) {
6549 /* count this one */
6564 struct sctp_laddr *laddr;
6566 LIST_FOREACH(laddr, &stcb->sctp_ep->sctp_addr_list,
6568 if (sctp_is_addr_restricted(stcb, laddr->ifa)) {
6571 /* count this one */
6575 SCTP_IPI_ADDR_RUNLOCK();
6579 #if defined(SCTP_LOCAL_TRACE_BUF)
6582 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)
6584 uint32_t saveindex, newindex;
6587 saveindex = SCTP_BASE_SYSCTL(sctp_log).index;
6588 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6591 newindex = saveindex + 1;
6593 } while (atomic_cmpset_int(&SCTP_BASE_SYSCTL(sctp_log).index, saveindex, newindex) == 0);
6594 if (saveindex >= SCTP_MAX_LOGGING_SIZE) {
6597 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].timestamp = SCTP_GET_CYCLECOUNT;
6598 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].subsys = subsys;
6599 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[0] = a;
6600 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[1] = b;
6601 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[2] = c;
6602 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[3] = d;
6603 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[4] = e;
6604 SCTP_BASE_SYSCTL(sctp_log).entry[saveindex].params[5] = f;
6608 /* XXX: Remove the #ifdef after tunneling over IPv6 works also on FreeBSD. */
6610 /* We will need to add support
6611 * to bind the ports and such here
6612 * so we can do UDP tunneling. In
6613 * the mean-time, we return error
6615 #include <netinet/udp.h>
6616 #include <netinet/udp_var.h>
6617 #include <sys/proc.h>
6619 #include <netinet6/sctp6_var.h>
6623 sctp_recv_udp_tunneled_packet(struct mbuf *m, int off, struct inpcb *ignored)
6626 struct mbuf *sp, *last;
6627 struct udphdr *uhdr;
6629 int header_size = sizeof(struct udphdr) + sizeof(struct sctphdr);
6632 * Split out the mbuf chain. Leave the IP header in m, place the
6635 if ((m->m_flags & M_PKTHDR) == 0) {
6636 /* Can't handle one that is not a pkt hdr */
6639 /* pull the src port */
6640 iph = mtod(m, struct ip *);
6641 uhdr = (struct udphdr *)((caddr_t)iph + off);
6643 port = uhdr->uh_sport;
6644 sp = m_split(m, off, M_DONTWAIT);
6646 /* Gak, drop packet, we can't do a split */
6649 if (sp->m_pkthdr.len < header_size) {
6650 /* Gak, packet can't have an SCTP header in it - to small */
6654 /* ok now pull up the UDP header and SCTP header together */
6655 sp = m_pullup(sp, header_size);
6657 /* Gak pullup failed */
6660 /* trim out the UDP header */
6661 m_adj(sp, sizeof(struct udphdr));
6663 /* Now reconstruct the mbuf chain */
6664 /* 1) find last one */
6666 while (last->m_next != NULL) {
6667 last = last->m_next;
6670 m->m_pkthdr.len += sp->m_pkthdr.len;
6672 while (last != NULL) {
6673 last = last->m_next;
6675 /* Now its ready for sctp_input or sctp6_input */
6676 iph = mtod(m, struct ip *);
6677 switch (iph->ip_v) {
6684 len = SCTP_GET_IPV4_LENGTH(iph);
6685 len -= sizeof(struct udphdr);
6686 SCTP_GET_IPV4_LENGTH(iph) = len;
6687 sctp_input_with_port(m, off, port);
6692 case IPV6_VERSION >> 4:
6694 /* its IPv6 - NOT supported */
6712 sctp_over_udp_stop(void)
6717 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6720 if (SCTP_BASE_INFO(udp_tun_socket) == NULL) {
6724 sop = SCTP_BASE_INFO(udp_tun_socket);
6726 SCTP_BASE_INFO(udp_tun_socket) = NULL;
6730 sctp_over_udp_start(void)
6734 struct sockaddr_in sin;
6735 struct socket *sop = NULL;
6740 * This function assumes sysctl caller holds sctp_sysctl_info_lock()
6743 port = SCTP_BASE_SYSCTL(sctp_udp_tunneling_port);
6745 /* Must have a port set */
6748 if (SCTP_BASE_INFO(udp_tun_socket) != NULL) {
6749 /* Already running -- must stop first */
6753 cred = th->td_ucred;
6754 if ((ret = socreate(PF_INET, &sop,
6755 SOCK_DGRAM, IPPROTO_UDP, cred, th))) {
6758 SCTP_BASE_INFO(udp_tun_socket) = sop;
6759 /* call the special UDP hook */
6760 ret = udp_set_kernel_tunneling(sop, sctp_recv_udp_tunneled_packet);
6762 goto exit_stage_left;
6764 /* Ok we have a socket, bind it to the port */
6765 memset(&sin, 0, sizeof(sin));
6766 sin.sin_len = sizeof(sin);
6767 sin.sin_family = AF_INET;
6768 sin.sin_port = htons(port);
6769 ret = sobind(sop, (struct sockaddr *)&sin, th);
6771 /* Close up we cant get the port */
6773 sctp_over_udp_stop();
6777 * Ok we should now get UDP packets directly to our input routine
6778 * sctp_recv_upd_tunneled_packet().